net/wireless/nl80211.c

   1 // SPDX-License-Identifier: GPL-2.0-only
   2 /*
   3  * This is the new netlink-based wireless configuration interface.
   4  *
   5  * Copyright 2006-2010  Johannes Berg <johannes@sipsolutions.net>
   6  * Copyright 2013-2014  Intel Mobile Communications GmbH
   7  * Copyright 2015-2017  Intel Deutschland GmbH
   8  * Copyright (C) 2018-2019 Intel Corporation
   9  */
  10
  11 #include <linux/if.h>
  12 #include <linux/module.h>
  13 #include <linux/err.h>
  14 #include <linux/slab.h>
  15 #include <linux/list.h>
  16 #include <linux/if_ether.h>
  17 #include <linux/ieee80211.h>
  18 #include <linux/nl80211.h>
  19 #include <linux/rtnetlink.h>
  20 #include <linux/netlink.h>
  21 #include <linux/nospec.h>
  22 #include <linux/etherdevice.h>
  23 #include <net/net_namespace.h>
  24 #include <net/genetlink.h>
  25 #include <net/cfg80211.h>
  26 #include <net/sock.h>
  27 #include <net/inet_connection_sock.h>
  28 #include "core.h"
  29 #include "nl80211.h"
  30 #include "reg.h"
  31 #include "rdev-ops.h"
  32
  33 static int nl80211_crypto_settings(struct cfg80211_registered_device *rdev,
  34                                    struct genl_info *info,
  35                                    struct cfg80211_crypto_settings *settings,
  36                                    int cipher_limit);
  37
  38 /* the netlink family */
  39 static struct genl_family nl80211_fam;
  40
  41 /* multicast groups */
  42 enum nl80211_multicast_groups {
  43         NL80211_MCGRP_CONFIG,
  44         NL80211_MCGRP_SCAN,
  45         NL80211_MCGRP_REGULATORY,
  46         NL80211_MCGRP_MLME,
  47         NL80211_MCGRP_VENDOR,
  48         NL80211_MCGRP_NAN,
  49         NL80211_MCGRP_TESTMODE /* keep last - ifdef! */
  50 };
  51
  52 static const struct genl_multicast_group nl80211_mcgrps[] = {
  53         [NL80211_MCGRP_CONFIG] = { .name = NL80211_MULTICAST_GROUP_CONFIG },
  54         [NL80211_MCGRP_SCAN] = { .name = NL80211_MULTICAST_GROUP_SCAN },
  55         [NL80211_MCGRP_REGULATORY] = { .name = NL80211_MULTICAST_GROUP_REG },
  56         [NL80211_MCGRP_MLME] = { .name = NL80211_MULTICAST_GROUP_MLME },
  57         [NL80211_MCGRP_VENDOR] = { .name = NL80211_MULTICAST_GROUP_VENDOR },
  58         [NL80211_MCGRP_NAN] = { .name = NL80211_MULTICAST_GROUP_NAN },
  59 #ifdef CONFIG_NL80211_TESTMODE
  60         [NL80211_MCGRP_TESTMODE] = { .name = NL80211_MULTICAST_GROUP_TESTMODE }
  61 #endif
  62 };
  63
  64 /* returns ERR_PTR values */
  65 static struct wireless_dev *
  66 __cfg80211_wdev_from_attrs(struct net *netns, struct nlattr **attrs)
  67 {
  68         struct cfg80211_registered_device *rdev;
  69         struct wireless_dev *result = NULL;
  70         bool have_ifidx = attrs[NL80211_ATTR_IFINDEX];
  71         bool have_wdev_id = attrs[NL80211_ATTR_WDEV];
  72         u64 wdev_id;
  73         int wiphy_idx = -1;
  74         int ifidx = -1;
  75
  76         ASSERT_RTNL();
  77
  78         if (!have_ifidx && !have_wdev_id)
  79                 return ERR_PTR(-EINVAL);
  80
  81         if (have_ifidx)
  82                 ifidx = nla_get_u32(attrs[NL80211_ATTR_IFINDEX]);
  83         if (have_wdev_id) {
  84                 wdev_id = nla_get_u64(attrs[NL80211_ATTR_WDEV]);
  85                 wiphy_idx = wdev_id >> 32;
  86         }
  87
  88         list_for_each_entry(rdev, &cfg80211_rdev_list, list) {
  89                 struct wireless_dev *wdev;
  90
  91                 if (wiphy_net(&rdev->wiphy) != netns)
  92                         continue;
  93
  94                 if (have_wdev_id && rdev->wiphy_idx != wiphy_idx)
  95                         continue;
  96
  97                 list_for_each_entry(wdev, &rdev->wiphy.wdev_list, list) {
  98                         if (have_ifidx && wdev->netdev &&
  99                             wdev->netdev->ifindex == ifidx) {
 100                                 result = wdev;
 101                                 break;
 102                         }
 103                         if (have_wdev_id && wdev->identifier == (u32)wdev_id) {
 104                                 result = wdev;
 105                                 break;
 106                         }
 107                 }
 108
 109                 if (result)
 110                         break;
 111         }
 112
 113         if (result)
 114                 return result;
 115         return ERR_PTR(-ENODEV);
 116 }
 117
 118 static struct cfg80211_registered_device *
 119 __cfg80211_rdev_from_attrs(struct net *netns, struct nlattr **attrs)
 120 {
 121         struct cfg80211_registered_device *rdev = NULL, *tmp;
 122         struct net_device *netdev;
 123
 124         ASSERT_RTNL();
 125
 126         if (!attrs[NL80211_ATTR_WIPHY] &&
 127             !attrs[NL80211_ATTR_IFINDEX] &&
 128             !attrs[NL80211_ATTR_WDEV])
 129                 return ERR_PTR(-EINVAL);
 130
 131         if (attrs[NL80211_ATTR_WIPHY])
 132                 rdev = cfg80211_rdev_by_wiphy_idx(
 133                                 nla_get_u32(attrs[NL80211_ATTR_WIPHY]));
 134
 135         if (attrs[NL80211_ATTR_WDEV]) {
 136                 u64 wdev_id = nla_get_u64(attrs[NL80211_ATTR_WDEV]);
 137                 struct wireless_dev *wdev;
 138                 bool found = false;
 139
 140                 tmp = cfg80211_rdev_by_wiphy_idx(wdev_id >> 32);
 141                 if (tmp) {
 142                         /* make sure wdev exists */
 143                         list_for_each_entry(wdev, &tmp->wiphy.wdev_list, list) {
 144                                 if (wdev->identifier != (u32)wdev_id)
 145                                         continue;
 146                                 found = true;
 147                                 break;
 148                         }
 149
 150                         if (!found)
 151                                 tmp = NULL;
 152
 153                         if (rdev && tmp != rdev)
 154                                 return ERR_PTR(-EINVAL);
 155                         rdev = tmp;
 156                 }
 157         }
 158
 159         if (attrs[NL80211_ATTR_IFINDEX]) {
 160                 int ifindex = nla_get_u32(attrs[NL80211_ATTR_IFINDEX]);
 161
 162                 netdev = __dev_get_by_index(netns, ifindex);
 163                 if (netdev) {
 164                         if (netdev->ieee80211_ptr)
 165                                 tmp = wiphy_to_rdev(
 166                                         netdev->ieee80211_ptr->wiphy);
 167                         else
 168                                 tmp = NULL;
 169
 170                         /* not wireless device -- return error */
 171                         if (!tmp)
 172                                 return ERR_PTR(-EINVAL);
 173
 174                         /* mismatch -- return error */
 175                         if (rdev && tmp != rdev)
 176                                 return ERR_PTR(-EINVAL);
 177
 178                         rdev = tmp;
 179                 }
 180         }
 181
 182         if (!rdev)
 183                 return ERR_PTR(-ENODEV);
 184
 185         if (netns != wiphy_net(&rdev->wiphy))
 186                 return ERR_PTR(-ENODEV);
 187
 188         return rdev;
 189 }
 190
 191 /*
 192  * This function returns a pointer to the driver
 193  * that the genl_info item that is passed refers to.
 194  *
 195  * The result of this can be a PTR_ERR and hence must
 196  * be checked with IS_ERR() for errors.
 197  */
 198 static struct cfg80211_registered_device *
 199 cfg80211_get_dev_from_info(struct net *netns, struct genl_info *info)
 200 {
 201         return __cfg80211_rdev_from_attrs(netns, info->attrs);
 202 }
 203
 204 static int validate_beacon_head(const struct nlattr *attr,
 205                                 struct netlink_ext_ack *extack)
 206 {
 207         const u8 *data = nla_data(attr);
 208         unsigned int len = nla_len(attr);
 209         const struct element *elem;
 210         const struct ieee80211_mgmt *mgmt = (void *)data;
 211         unsigned int fixedlen = offsetof(struct ieee80211_mgmt,
 212                                          u.beacon.variable);
 213
 214         if (len < fixedlen)
 215                 goto err;
 216
 217         if (ieee80211_hdrlen(mgmt->frame_control) !=
 218             offsetof(struct ieee80211_mgmt, u.beacon))
 219                 goto err;
 220
 221         data += fixedlen;
 222         len -= fixedlen;
 223
 224         for_each_element(elem, data, len) {
 225                 /* nothing */
 226         }
 227
 228         if (for_each_element_completed(elem, data, len))
 229                 return 0;
 230
 231 err:
 232         NL_SET_ERR_MSG_ATTR(extack, attr, "malformed beacon head");
 233         return -EINVAL;
 234 }
 235
 236 static int validate_ie_attr(const struct nlattr *attr,
 237                             struct netlink_ext_ack *extack)
 238 {
 239         const u8 *data = nla_data(attr);
 240         unsigned int len = nla_len(attr);
 241         const struct element *elem;
 242
 243         for_each_element(elem, data, len) {
 244                 /* nothing */
 245         }
 246
 247         if (for_each_element_completed(elem, data, len))
 248                 return 0;
 249
 250         NL_SET_ERR_MSG_ATTR(extack, attr, "malformed information elements");
 251         return -EINVAL;
 252 }
 253
 254 /* policy for the attributes */
 255 static const struct nla_policy
 256 nl80211_ftm_responder_policy[NL80211_FTM_RESP_ATTR_MAX + 1] = {
 257         [NL80211_FTM_RESP_ATTR_ENABLED] = { .type = NLA_FLAG, },
 258         [NL80211_FTM_RESP_ATTR_LCI] = { .type = NLA_BINARY,
 259                                         .len = U8_MAX },
 260         [NL80211_FTM_RESP_ATTR_CIVICLOC] = { .type = NLA_BINARY,
 261                                              .len = U8_MAX },
 262 };
 263
 264 static const struct nla_policy
 265 nl80211_pmsr_ftm_req_attr_policy[NL80211_PMSR_FTM_REQ_ATTR_MAX + 1] = {
 266         [NL80211_PMSR_FTM_REQ_ATTR_ASAP] = { .type = NLA_FLAG },
 267         [NL80211_PMSR_FTM_REQ_ATTR_PREAMBLE] = { .type = NLA_U32 },
 268         [NL80211_PMSR_FTM_REQ_ATTR_NUM_BURSTS_EXP] =
 269                 NLA_POLICY_MAX(NLA_U8, 15),
 270         [NL80211_PMSR_FTM_REQ_ATTR_BURST_PERIOD] = { .type = NLA_U16 },
 271         [NL80211_PMSR_FTM_REQ_ATTR_BURST_DURATION] =
 272                 NLA_POLICY_MAX(NLA_U8, 15),
 273         [NL80211_PMSR_FTM_REQ_ATTR_FTMS_PER_BURST] =
 274                 NLA_POLICY_MAX(NLA_U8, 31),
 275         [NL80211_PMSR_FTM_REQ_ATTR_NUM_FTMR_RETRIES] = { .type = NLA_U8 },
 276         [NL80211_PMSR_FTM_REQ_ATTR_REQUEST_LCI] = { .type = NLA_FLAG },
 277         [NL80211_PMSR_FTM_REQ_ATTR_REQUEST_CIVICLOC] = { .type = NLA_FLAG },
 278 };
 279
 280 static const struct nla_policy
 281 nl80211_pmsr_req_data_policy[NL80211_PMSR_TYPE_MAX + 1] = {
 282         [NL80211_PMSR_TYPE_FTM] =
 283                 NLA_POLICY_NESTED(nl80211_pmsr_ftm_req_attr_policy),
 284 };
 285
 286 static const struct nla_policy
 287 nl80211_pmsr_req_attr_policy[NL80211_PMSR_REQ_ATTR_MAX + 1] = {
 288         [NL80211_PMSR_REQ_ATTR_DATA] =
 289                 NLA_POLICY_NESTED(nl80211_pmsr_req_data_policy),
 290         [NL80211_PMSR_REQ_ATTR_GET_AP_TSF] = { .type = NLA_FLAG },
 291 };
 292
 293 static const struct nla_policy
 294 nl80211_psmr_peer_attr_policy[NL80211_PMSR_PEER_ATTR_MAX + 1] = {
 295         [NL80211_PMSR_PEER_ATTR_ADDR] = NLA_POLICY_ETH_ADDR,
 296         /*
 297          * we could specify this again to be the top-level policy,
 298          * but that would open us up to recursion problems ...
 299          */
 300         [NL80211_PMSR_PEER_ATTR_CHAN] = { .type = NLA_NESTED },
 301         [NL80211_PMSR_PEER_ATTR_REQ] =
 302                 NLA_POLICY_NESTED(nl80211_pmsr_req_attr_policy),
 303         [NL80211_PMSR_PEER_ATTR_RESP] = { .type = NLA_REJECT },
 304 };
 305
 306 static const struct nla_policy
 307 nl80211_pmsr_attr_policy[NL80211_PMSR_ATTR_MAX + 1] = {
 308         [NL80211_PMSR_ATTR_MAX_PEERS] = { .type = NLA_REJECT },
 309         [NL80211_PMSR_ATTR_REPORT_AP_TSF] = { .type = NLA_REJECT },
 310         [NL80211_PMSR_ATTR_RANDOMIZE_MAC_ADDR] = { .type = NLA_REJECT },
 311         [NL80211_PMSR_ATTR_TYPE_CAPA] = { .type = NLA_REJECT },
 312         [NL80211_PMSR_ATTR_PEERS] =
 313                 NLA_POLICY_NESTED_ARRAY(nl80211_psmr_peer_attr_policy),
 314 };
 315
 316 static const struct nla_policy
 317 he_obss_pd_policy[NL80211_HE_OBSS_PD_ATTR_MAX + 1] = {
 318         [NL80211_HE_OBSS_PD_ATTR_MIN_OFFSET] =
 319                 NLA_POLICY_RANGE(NLA_U8, 1, 20),
 320         [NL80211_HE_OBSS_PD_ATTR_MAX_OFFSET] =
 321                 NLA_POLICY_RANGE(NLA_U8, 1, 20),
 322 };
 323
 324 const struct nla_policy nl80211_policy[NUM_NL80211_ATTR] = {
 325         [0] = { .strict_start_type = NL80211_ATTR_HE_OBSS_PD },
 326         [NL80211_ATTR_WIPHY] = { .type = NLA_U32 },
 327         [NL80211_ATTR_WIPHY_NAME] = { .type = NLA_NUL_STRING,
 328                                       .len = 20-1 },
 329         [NL80211_ATTR_WIPHY_TXQ_PARAMS] = { .type = NLA_NESTED },
 330
 331         [NL80211_ATTR_WIPHY_FREQ] = { .type = NLA_U32 },
 332         [NL80211_ATTR_WIPHY_CHANNEL_TYPE] = { .type = NLA_U32 },
 333         [NL80211_ATTR_WIPHY_EDMG_CHANNELS] = NLA_POLICY_RANGE(NLA_U8,
 334                                                 NL80211_EDMG_CHANNELS_MIN,
 335                                                 NL80211_EDMG_CHANNELS_MAX),
 336         [NL80211_ATTR_WIPHY_EDMG_BW_CONFIG] = NLA_POLICY_RANGE(NLA_U8,
 337                                                 NL80211_EDMG_BW_CONFIG_MIN,
 338                                                 NL80211_EDMG_BW_CONFIG_MAX),
 339
 340         [NL80211_ATTR_CHANNEL_WIDTH] = { .type = NLA_U32 },
 341         [NL80211_ATTR_CENTER_FREQ1] = { .type = NLA_U32 },
 342         [NL80211_ATTR_CENTER_FREQ2] = { .type = NLA_U32 },
 343
 344         [NL80211_ATTR_WIPHY_RETRY_SHORT] = NLA_POLICY_MIN(NLA_U8, 1),
 345         [NL80211_ATTR_WIPHY_RETRY_LONG] = NLA_POLICY_MIN(NLA_U8, 1),
 346         [NL80211_ATTR_WIPHY_FRAG_THRESHOLD] = { .type = NLA_U32 },
 347         [NL80211_ATTR_WIPHY_RTS_THRESHOLD] = { .type = NLA_U32 },
 348         [NL80211_ATTR_WIPHY_COVERAGE_CLASS] = { .type = NLA_U8 },
 349         [NL80211_ATTR_WIPHY_DYN_ACK] = { .type = NLA_FLAG },
 350
 351         [NL80211_ATTR_IFTYPE] = NLA_POLICY_MAX(NLA_U32, NL80211_IFTYPE_MAX),
 352         [NL80211_ATTR_IFINDEX] = { .type = NLA_U32 },
 353         [NL80211_ATTR_IFNAME] = { .type = NLA_NUL_STRING, .len = IFNAMSIZ-1 },
 354
 355         [NL80211_ATTR_MAC] = { .type = NLA_EXACT_LEN_WARN, .len = ETH_ALEN },
 356         [NL80211_ATTR_PREV_BSSID] = {
 357                 .type = NLA_EXACT_LEN_WARN,
 358                 .len = ETH_ALEN
 359         },
 360
 361         [NL80211_ATTR_KEY] = { .type = NLA_NESTED, },
 362         [NL80211_ATTR_KEY_DATA] = { .type = NLA_BINARY,
 363                                     .len = WLAN_MAX_KEY_LEN },
 364         [NL80211_ATTR_KEY_IDX] = NLA_POLICY_MAX(NLA_U8, 5),
 365         [NL80211_ATTR_KEY_CIPHER] = { .type = NLA_U32 },
 366         [NL80211_ATTR_KEY_DEFAULT] = { .type = NLA_FLAG },
 367         [NL80211_ATTR_KEY_SEQ] = { .type = NLA_BINARY, .len = 16 },
 368         [NL80211_ATTR_KEY_TYPE] =
 369                 NLA_POLICY_MAX(NLA_U32, NUM_NL80211_KEYTYPES),
 370
 371         [NL80211_ATTR_BEACON_INTERVAL] = { .type = NLA_U32 },
 372         [NL80211_ATTR_DTIM_PERIOD] = { .type = NLA_U32 },
 373         [NL80211_ATTR_BEACON_HEAD] =
 374                 NLA_POLICY_VALIDATE_FN(NLA_BINARY, validate_beacon_head,
 375                                        IEEE80211_MAX_DATA_LEN),
 376         [NL80211_ATTR_BEACON_TAIL] =
 377                 NLA_POLICY_VALIDATE_FN(NLA_BINARY, validate_ie_attr,
 378                                        IEEE80211_MAX_DATA_LEN),
 379         [NL80211_ATTR_STA_AID] =
 380                 NLA_POLICY_RANGE(NLA_U16, 1, IEEE80211_MAX_AID),
 381         [NL80211_ATTR_STA_FLAGS] = { .type = NLA_NESTED },
 382         [NL80211_ATTR_STA_LISTEN_INTERVAL] = { .type = NLA_U16 },
 383         [NL80211_ATTR_STA_SUPPORTED_RATES] = { .type = NLA_BINARY,
 384                                                .len = NL80211_MAX_SUPP_RATES },
 385         [NL80211_ATTR_STA_PLINK_ACTION] =
 386                 NLA_POLICY_MAX(NLA_U8, NUM_NL80211_PLINK_ACTIONS - 1),
 387         [NL80211_ATTR_STA_TX_POWER_SETTING] =
 388                 NLA_POLICY_RANGE(NLA_U8,
 389                                  NL80211_TX_POWER_AUTOMATIC,
 390                                  NL80211_TX_POWER_FIXED),
 391         [NL80211_ATTR_STA_TX_POWER] = { .type = NLA_S16 },
 392         [NL80211_ATTR_STA_VLAN] = { .type = NLA_U32 },
 393         [NL80211_ATTR_MNTR_FLAGS] = { /* NLA_NESTED can't be empty */ },
 394         [NL80211_ATTR_MESH_ID] = { .type = NLA_BINARY,
 395                                    .len = IEEE80211_MAX_MESH_ID_LEN },
 396         [NL80211_ATTR_MPATH_NEXT_HOP] = NLA_POLICY_ETH_ADDR_COMPAT,
 397
 398         [NL80211_ATTR_REG_ALPHA2] = { .type = NLA_STRING, .len = 2 },
 399         [NL80211_ATTR_REG_RULES] = { .type = NLA_NESTED },
 400
 401         [NL80211_ATTR_BSS_CTS_PROT] = { .type = NLA_U8 },
 402         [NL80211_ATTR_BSS_SHORT_PREAMBLE] = { .type = NLA_U8 },
 403         [NL80211_ATTR_BSS_SHORT_SLOT_TIME] = { .type = NLA_U8 },
 404         [NL80211_ATTR_BSS_BASIC_RATES] = { .type = NLA_BINARY,
 405                                            .len = NL80211_MAX_SUPP_RATES },
 406         [NL80211_ATTR_BSS_HT_OPMODE] = { .type = NLA_U16 },
 407
 408         [NL80211_ATTR_MESH_CONFIG] = { .type = NLA_NESTED },
 409         [NL80211_ATTR_SUPPORT_MESH_AUTH] = { .type = NLA_FLAG },
 410
 411         [NL80211_ATTR_HT_CAPABILITY] = {
 412                 .type = NLA_EXACT_LEN_WARN,
 413                 .len = NL80211_HT_CAPABILITY_LEN
 414         },
 415
 416         [NL80211_ATTR_MGMT_SUBTYPE] = { .type = NLA_U8 },
 417         [NL80211_ATTR_IE] = NLA_POLICY_VALIDATE_FN(NLA_BINARY,
 418                                                    validate_ie_attr,
 419                                                    IEEE80211_MAX_DATA_LEN),
 420         [NL80211_ATTR_SCAN_FREQUENCIES] = { .type = NLA_NESTED },
 421         [NL80211_ATTR_SCAN_SSIDS] = { .type = NLA_NESTED },
 422
 423         [NL80211_ATTR_SSID] = { .type = NLA_BINARY,
 424                                 .len = IEEE80211_MAX_SSID_LEN },
 425         [NL80211_ATTR_AUTH_TYPE] = { .type = NLA_U32 },
 426         [NL80211_ATTR_REASON_CODE] = { .type = NLA_U16 },
 427         [NL80211_ATTR_FREQ_FIXED] = { .type = NLA_FLAG },
 428         [NL80211_ATTR_TIMED_OUT] = { .type = NLA_FLAG },
 429         [NL80211_ATTR_USE_MFP] = NLA_POLICY_RANGE(NLA_U32,
 430                                                   NL80211_MFP_NO,
 431                                                   NL80211_MFP_OPTIONAL),
 432         [NL80211_ATTR_STA_FLAGS2] = {
 433                 .len = sizeof(struct nl80211_sta_flag_update),
 434         },
 435         [NL80211_ATTR_CONTROL_PORT] = { .type = NLA_FLAG },
 436         [NL80211_ATTR_CONTROL_PORT_ETHERTYPE] = { .type = NLA_U16 },
 437         [NL80211_ATTR_CONTROL_PORT_NO_ENCRYPT] = { .type = NLA_FLAG },
 438         [NL80211_ATTR_CONTROL_PORT_OVER_NL80211] = { .type = NLA_FLAG },
 439         [NL80211_ATTR_PRIVACY] = { .type = NLA_FLAG },
 440         [NL80211_ATTR_CIPHER_SUITE_GROUP] = { .type = NLA_U32 },
 441         [NL80211_ATTR_WPA_VERSIONS] = { .type = NLA_U32 },
 442         [NL80211_ATTR_PID] = { .type = NLA_U32 },
 443         [NL80211_ATTR_4ADDR] = { .type = NLA_U8 },
 444         [NL80211_ATTR_PMKID] = {
 445                 .type = NLA_EXACT_LEN_WARN,
 446                 .len = WLAN_PMKID_LEN
 447         },
 448         [NL80211_ATTR_DURATION] = { .type = NLA_U32 },
 449         [NL80211_ATTR_COOKIE] = { .type = NLA_U64 },
 450         [NL80211_ATTR_TX_RATES] = { .type = NLA_NESTED },
 451         [NL80211_ATTR_FRAME] = { .type = NLA_BINARY,
 452                                  .len = IEEE80211_MAX_DATA_LEN },
 453         [NL80211_ATTR_FRAME_MATCH] = { .type = NLA_BINARY, },
 454         [NL80211_ATTR_PS_STATE] = NLA_POLICY_RANGE(NLA_U32,
 455                                                    NL80211_PS_DISABLED,
 456                                                    NL80211_PS_ENABLED),
 457         [NL80211_ATTR_CQM] = { .type = NLA_NESTED, },
 458         [NL80211_ATTR_LOCAL_STATE_CHANGE] = { .type = NLA_FLAG },
 459         [NL80211_ATTR_AP_ISOLATE] = { .type = NLA_U8 },
 460         [NL80211_ATTR_WIPHY_TX_POWER_SETTING] = { .type = NLA_U32 },
 461         [NL80211_ATTR_WIPHY_TX_POWER_LEVEL] = { .type = NLA_U32 },
 462         [NL80211_ATTR_FRAME_TYPE] = { .type = NLA_U16 },
 463         [NL80211_ATTR_WIPHY_ANTENNA_TX] = { .type = NLA_U32 },
 464         [NL80211_ATTR_WIPHY_ANTENNA_RX] = { .type = NLA_U32 },
 465         [NL80211_ATTR_MCAST_RATE] = { .type = NLA_U32 },
 466         [NL80211_ATTR_OFFCHANNEL_TX_OK] = { .type = NLA_FLAG },
 467         [NL80211_ATTR_KEY_DEFAULT_TYPES] = { .type = NLA_NESTED },
 468         [NL80211_ATTR_WOWLAN_TRIGGERS] = { .type = NLA_NESTED },
 469         [NL80211_ATTR_STA_PLINK_STATE] =
 470                 NLA_POLICY_MAX(NLA_U8, NUM_NL80211_PLINK_STATES - 1),
 471         [NL80211_ATTR_MESH_PEER_AID] =
 472                 NLA_POLICY_RANGE(NLA_U16, 1, IEEE80211_MAX_AID),
 473         [NL80211_ATTR_SCHED_SCAN_INTERVAL] = { .type = NLA_U32 },
 474         [NL80211_ATTR_REKEY_DATA] = { .type = NLA_NESTED },
 475         [NL80211_ATTR_SCAN_SUPP_RATES] = { .type = NLA_NESTED },
 476         [NL80211_ATTR_HIDDEN_SSID] =
 477                 NLA_POLICY_RANGE(NLA_U32,
 478                                  NL80211_HIDDEN_SSID_NOT_IN_USE,
 479                                  NL80211_HIDDEN_SSID_ZERO_CONTENTS),
 480         [NL80211_ATTR_IE_PROBE_RESP] =
 481                 NLA_POLICY_VALIDATE_FN(NLA_BINARY, validate_ie_attr,
 482                                        IEEE80211_MAX_DATA_LEN),
 483         [NL80211_ATTR_IE_ASSOC_RESP] =
 484                 NLA_POLICY_VALIDATE_FN(NLA_BINARY, validate_ie_attr,
 485                                        IEEE80211_MAX_DATA_LEN),
 486         [NL80211_ATTR_ROAM_SUPPORT] = { .type = NLA_FLAG },
 487         [NL80211_ATTR_SCHED_SCAN_MATCH] = { .type = NLA_NESTED },
 488         [NL80211_ATTR_TX_NO_CCK_RATE] = { .type = NLA_FLAG },
 489         [NL80211_ATTR_TDLS_ACTION] = { .type = NLA_U8 },
 490         [NL80211_ATTR_TDLS_DIALOG_TOKEN] = { .type = NLA_U8 },
 491         [NL80211_ATTR_TDLS_OPERATION] = { .type = NLA_U8 },
 492         [NL80211_ATTR_TDLS_SUPPORT] = { .type = NLA_FLAG },
 493         [NL80211_ATTR_TDLS_EXTERNAL_SETUP] = { .type = NLA_FLAG },
 494         [NL80211_ATTR_TDLS_INITIATOR] = { .type = NLA_FLAG },
 495         [NL80211_ATTR_DONT_WAIT_FOR_ACK] = { .type = NLA_FLAG },
 496         [NL80211_ATTR_PROBE_RESP] = { .type = NLA_BINARY,
 497                                       .len = IEEE80211_MAX_DATA_LEN },
 498         [NL80211_ATTR_DFS_REGION] = { .type = NLA_U8 },
 499         [NL80211_ATTR_DISABLE_HT] = { .type = NLA_FLAG },
 500         [NL80211_ATTR_HT_CAPABILITY_MASK] = {
 501                 .len = NL80211_HT_CAPABILITY_LEN
 502         },
 503         [NL80211_ATTR_NOACK_MAP] = { .type = NLA_U16 },
 504         [NL80211_ATTR_INACTIVITY_TIMEOUT] = { .type = NLA_U16 },
 505         [NL80211_ATTR_BG_SCAN_PERIOD] = { .type = NLA_U16 },
 506         [NL80211_ATTR_WDEV] = { .type = NLA_U64 },
 507         [NL80211_ATTR_USER_REG_HINT_TYPE] = { .type = NLA_U32 },
 508         [NL80211_ATTR_AUTH_DATA] = { .type = NLA_BINARY, },
 509         [NL80211_ATTR_VHT_CAPABILITY] = {
 510                 .type = NLA_EXACT_LEN_WARN,
 511                 .len = NL80211_VHT_CAPABILITY_LEN
 512         },
 513         [NL80211_ATTR_SCAN_FLAGS] = { .type = NLA_U32 },
 514         [NL80211_ATTR_P2P_CTWINDOW] = NLA_POLICY_MAX(NLA_U8, 127),
 515         [NL80211_ATTR_P2P_OPPPS] = NLA_POLICY_MAX(NLA_U8, 1),
 516         [NL80211_ATTR_LOCAL_MESH_POWER_MODE] =
 517                 NLA_POLICY_RANGE(NLA_U32,
 518                                  NL80211_MESH_POWER_UNKNOWN + 1,
 519                                  NL80211_MESH_POWER_MAX),
 520         [NL80211_ATTR_ACL_POLICY] = {. type = NLA_U32 },
 521         [NL80211_ATTR_MAC_ADDRS] = { .type = NLA_NESTED },
 522         [NL80211_ATTR_STA_CAPABILITY] = { .type = NLA_U16 },
 523         [NL80211_ATTR_STA_EXT_CAPABILITY] = { .type = NLA_BINARY, },
 524         [NL80211_ATTR_SPLIT_WIPHY_DUMP] = { .type = NLA_FLAG, },
 525         [NL80211_ATTR_DISABLE_VHT] = { .type = NLA_FLAG },
 526         [NL80211_ATTR_VHT_CAPABILITY_MASK] = {
 527                 .len = NL80211_VHT_CAPABILITY_LEN,
 528         },
 529         [NL80211_ATTR_MDID] = { .type = NLA_U16 },
 530         [NL80211_ATTR_IE_RIC] = { .type = NLA_BINARY,
 531                                   .len = IEEE80211_MAX_DATA_LEN },
 532         [NL80211_ATTR_PEER_AID] =
 533                 NLA_POLICY_RANGE(NLA_U16, 1, IEEE80211_MAX_AID),
 534         [NL80211_ATTR_CH_SWITCH_COUNT] = { .type = NLA_U32 },
 535         [NL80211_ATTR_CH_SWITCH_BLOCK_TX] = { .type = NLA_FLAG },
 536         [NL80211_ATTR_CSA_IES] = { .type = NLA_NESTED },
 537         [NL80211_ATTR_CSA_C_OFF_BEACON] = { .type = NLA_BINARY },
 538         [NL80211_ATTR_CSA_C_OFF_PRESP] = { .type = NLA_BINARY },
 539         [NL80211_ATTR_STA_SUPPORTED_CHANNELS] = { .type = NLA_BINARY },
 540         [NL80211_ATTR_STA_SUPPORTED_OPER_CLASSES] = { .type = NLA_BINARY },
 541         [NL80211_ATTR_HANDLE_DFS] = { .type = NLA_FLAG },
 542         [NL80211_ATTR_OPMODE_NOTIF] = { .type = NLA_U8 },
 543         [NL80211_ATTR_VENDOR_ID] = { .type = NLA_U32 },
 544         [NL80211_ATTR_VENDOR_SUBCMD] = { .type = NLA_U32 },
 545         [NL80211_ATTR_VENDOR_DATA] = { .type = NLA_BINARY },
 546         [NL80211_ATTR_QOS_MAP] = { .type = NLA_BINARY,
 547                                    .len = IEEE80211_QOS_MAP_LEN_MAX },
 548         [NL80211_ATTR_MAC_HINT] = {
 549                 .type = NLA_EXACT_LEN_WARN,
 550                 .len = ETH_ALEN
 551         },
 552         [NL80211_ATTR_WIPHY_FREQ_HINT] = { .type = NLA_U32 },
 553         [NL80211_ATTR_TDLS_PEER_CAPABILITY] = { .type = NLA_U32 },
 554         [NL80211_ATTR_SOCKET_OWNER] = { .type = NLA_FLAG },
 555         [NL80211_ATTR_CSA_C_OFFSETS_TX] = { .type = NLA_BINARY },
 556         [NL80211_ATTR_USE_RRM] = { .type = NLA_FLAG },
 557         [NL80211_ATTR_TSID] = NLA_POLICY_MAX(NLA_U8, IEEE80211_NUM_TIDS - 1),
 558         [NL80211_ATTR_USER_PRIO] =
 559                 NLA_POLICY_MAX(NLA_U8, IEEE80211_NUM_UPS - 1),
 560         [NL80211_ATTR_ADMITTED_TIME] = { .type = NLA_U16 },
 561         [NL80211_ATTR_SMPS_MODE] = { .type = NLA_U8 },
 562         [NL80211_ATTR_MAC_MASK] = {
 563                 .type = NLA_EXACT_LEN_WARN,
 564                 .len = ETH_ALEN
 565         },
 566         [NL80211_ATTR_WIPHY_SELF_MANAGED_REG] = { .type = NLA_FLAG },
 567         [NL80211_ATTR_NETNS_FD] = { .type = NLA_U32 },
 568         [NL80211_ATTR_SCHED_SCAN_DELAY] = { .type = NLA_U32 },
 569         [NL80211_ATTR_REG_INDOOR] = { .type = NLA_FLAG },
 570         [NL80211_ATTR_PBSS] = { .type = NLA_FLAG },
 571         [NL80211_ATTR_BSS_SELECT] = { .type = NLA_NESTED },
 572         [NL80211_ATTR_STA_SUPPORT_P2P_PS] =
 573                 NLA_POLICY_MAX(NLA_U8, NUM_NL80211_P2P_PS_STATUS - 1),
 574         [NL80211_ATTR_MU_MIMO_GROUP_DATA] = {
 575                 .len = VHT_MUMIMO_GROUPS_DATA_LEN
 576         },
 577         [NL80211_ATTR_MU_MIMO_FOLLOW_MAC_ADDR] = {
 578                 .type = NLA_EXACT_LEN_WARN,
 579                 .len = ETH_ALEN
 580         },
 581         [NL80211_ATTR_NAN_MASTER_PREF] = NLA_POLICY_MIN(NLA_U8, 1),
 582         [NL80211_ATTR_BANDS] = { .type = NLA_U32 },
 583         [NL80211_ATTR_NAN_FUNC] = { .type = NLA_NESTED },
 584         [NL80211_ATTR_FILS_KEK] = { .type = NLA_BINARY,
 585                                     .len = FILS_MAX_KEK_LEN },
 586         [NL80211_ATTR_FILS_NONCES] = {
 587                 .type = NLA_EXACT_LEN_WARN,
 588                 .len = 2 * FILS_NONCE_LEN
 589         },
 590         [NL80211_ATTR_MULTICAST_TO_UNICAST_ENABLED] = { .type = NLA_FLAG, },
 591         [NL80211_ATTR_BSSID] = { .type = NLA_EXACT_LEN_WARN, .len = ETH_ALEN },
 592         [NL80211_ATTR_SCHED_SCAN_RELATIVE_RSSI] = { .type = NLA_S8 },
 593         [NL80211_ATTR_SCHED_SCAN_RSSI_ADJUST] = {
 594                 .len = sizeof(struct nl80211_bss_select_rssi_adjust)
 595         },
 596         [NL80211_ATTR_TIMEOUT_REASON] = { .type = NLA_U32 },
 597         [NL80211_ATTR_FILS_ERP_USERNAME] = { .type = NLA_BINARY,
 598                                              .len = FILS_ERP_MAX_USERNAME_LEN },
 599         [NL80211_ATTR_FILS_ERP_REALM] = { .type = NLA_BINARY,
 600                                           .len = FILS_ERP_MAX_REALM_LEN },
 601         [NL80211_ATTR_FILS_ERP_NEXT_SEQ_NUM] = { .type = NLA_U16 },
 602         [NL80211_ATTR_FILS_ERP_RRK] = { .type = NLA_BINARY,
 603                                         .len = FILS_ERP_MAX_RRK_LEN },
 604         [NL80211_ATTR_FILS_CACHE_ID] = { .type = NLA_EXACT_LEN_WARN, .len = 2 },
 605         [NL80211_ATTR_PMK] = { .type = NLA_BINARY, .len = PMK_MAX_LEN },
 606         [NL80211_ATTR_SCHED_SCAN_MULTI] = { .type = NLA_FLAG },
 607         [NL80211_ATTR_EXTERNAL_AUTH_SUPPORT] = { .type = NLA_FLAG },
 608
 609         [NL80211_ATTR_TXQ_LIMIT] = { .type = NLA_U32 },
 610         [NL80211_ATTR_TXQ_MEMORY_LIMIT] = { .type = NLA_U32 },
 611         [NL80211_ATTR_TXQ_QUANTUM] = { .type = NLA_U32 },
 612         [NL80211_ATTR_HE_CAPABILITY] = { .type = NLA_BINARY,
 613                                          .len = NL80211_HE_MAX_CAPABILITY_LEN },
 614
 615         [NL80211_ATTR_FTM_RESPONDER] = {
 616                 .type = NLA_NESTED,
 617                 .validation_data = nl80211_ftm_responder_policy,
 618         },
 619         [NL80211_ATTR_TIMEOUT] = NLA_POLICY_MIN(NLA_U32, 1),
 620         [NL80211_ATTR_PEER_MEASUREMENTS] =
 621                 NLA_POLICY_NESTED(nl80211_pmsr_attr_policy),
 622         [NL80211_ATTR_AIRTIME_WEIGHT] = NLA_POLICY_MIN(NLA_U16, 1),
 623         [NL80211_ATTR_SAE_PASSWORD] = { .type = NLA_BINARY,
 624                                         .len = SAE_PASSWORD_MAX_LEN },
 625         [NL80211_ATTR_TWT_RESPONDER] = { .type = NLA_FLAG },
 626         [NL80211_ATTR_HE_OBSS_PD] = NLA_POLICY_NESTED(he_obss_pd_policy),
 627         [NL80211_ATTR_VLAN_ID] = NLA_POLICY_RANGE(NLA_U16, 1, VLAN_N_VID - 2),
 628 };
 629
 630 /* policy for the key attributes */
 631 static const struct nla_policy nl80211_key_policy[NL80211_KEY_MAX + 1] = {
 632         [NL80211_KEY_DATA] = { .type = NLA_BINARY, .len = WLAN_MAX_KEY_LEN },
 633         [NL80211_KEY_IDX] = { .type = NLA_U8 },
 634         [NL80211_KEY_CIPHER] = { .type = NLA_U32 },
 635         [NL80211_KEY_SEQ] = { .type = NLA_BINARY, .len = 16 },
 636         [NL80211_KEY_DEFAULT] = { .type = NLA_FLAG },
 637         [NL80211_KEY_DEFAULT_MGMT] = { .type = NLA_FLAG },
 638         [NL80211_KEY_TYPE] = NLA_POLICY_MAX(NLA_U32, NUM_NL80211_KEYTYPES - 1),
 639         [NL80211_KEY_DEFAULT_TYPES] = { .type = NLA_NESTED },
 640         [NL80211_KEY_MODE] = NLA_POLICY_RANGE(NLA_U8, 0, NL80211_KEY_SET_TX),
 641 };
 642
 643 /* policy for the key default flags */
 644 static const struct nla_policy
 645 nl80211_key_default_policy[NUM_NL80211_KEY_DEFAULT_TYPES] = {
 646         [NL80211_KEY_DEFAULT_TYPE_UNICAST] = { .type = NLA_FLAG },
 647         [NL80211_KEY_DEFAULT_TYPE_MULTICAST] = { .type = NLA_FLAG },
 648 };
 649
 650 #ifdef CONFIG_PM
 651 /* policy for WoWLAN attributes */
 652 static const struct nla_policy
 653 nl80211_wowlan_policy[NUM_NL80211_WOWLAN_TRIG] = {
 654         [NL80211_WOWLAN_TRIG_ANY] = { .type = NLA_FLAG },
 655         [NL80211_WOWLAN_TRIG_DISCONNECT] = { .type = NLA_FLAG },
 656         [NL80211_WOWLAN_TRIG_MAGIC_PKT] = { .type = NLA_FLAG },
 657         [NL80211_WOWLAN_TRIG_PKT_PATTERN] = { .type = NLA_NESTED },
 658         [NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE] = { .type = NLA_FLAG },
 659         [NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST] = { .type = NLA_FLAG },
 660         [NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE] = { .type = NLA_FLAG },
 661         [NL80211_WOWLAN_TRIG_RFKILL_RELEASE] = { .type = NLA_FLAG },
 662         [NL80211_WOWLAN_TRIG_TCP_CONNECTION] = { .type = NLA_NESTED },
 663         [NL80211_WOWLAN_TRIG_NET_DETECT] = { .type = NLA_NESTED },
 664 };
 665
 666 static const struct nla_policy
 667 nl80211_wowlan_tcp_policy[NUM_NL80211_WOWLAN_TCP] = {
 668         [NL80211_WOWLAN_TCP_SRC_IPV4] = { .type = NLA_U32 },
 669         [NL80211_WOWLAN_TCP_DST_IPV4] = { .type = NLA_U32 },
 670         [NL80211_WOWLAN_TCP_DST_MAC] = {
 671                 .type = NLA_EXACT_LEN_WARN,
 672                 .len = ETH_ALEN
 673         },
 674         [NL80211_WOWLAN_TCP_SRC_PORT] = { .type = NLA_U16 },
 675         [NL80211_WOWLAN_TCP_DST_PORT] = { .type = NLA_U16 },
 676         [NL80211_WOWLAN_TCP_DATA_PAYLOAD] = { .type = NLA_MIN_LEN, .len = 1 },
 677         [NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ] = {
 678                 .len = sizeof(struct nl80211_wowlan_tcp_data_seq)
 679         },
 680         [NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN] = {
 681                 .len = sizeof(struct nl80211_wowlan_tcp_data_token)
 682         },
 683         [NL80211_WOWLAN_TCP_DATA_INTERVAL] = { .type = NLA_U32 },
 684         [NL80211_WOWLAN_TCP_WAKE_PAYLOAD] = { .type = NLA_MIN_LEN, .len = 1 },
 685         [NL80211_WOWLAN_TCP_WAKE_MASK] = { .type = NLA_MIN_LEN, .len = 1 },
 686 };
 687 #endif /* CONFIG_PM */
 688
 689 /* policy for coalesce rule attributes */
 690 static const struct nla_policy
 691 nl80211_coalesce_policy[NUM_NL80211_ATTR_COALESCE_RULE] = {
 692         [NL80211_ATTR_COALESCE_RULE_DELAY] = { .type = NLA_U32 },
 693         [NL80211_ATTR_COALESCE_RULE_CONDITION] =
 694                 NLA_POLICY_RANGE(NLA_U32,
 695                                  NL80211_COALESCE_CONDITION_MATCH,
 696                                  NL80211_COALESCE_CONDITION_NO_MATCH),
 697         [NL80211_ATTR_COALESCE_RULE_PKT_PATTERN] = { .type = NLA_NESTED },
 698 };
 699
 700 /* policy for GTK rekey offload attributes */
 701 static const struct nla_policy
 702 nl80211_rekey_policy[NUM_NL80211_REKEY_DATA] = {
 703         [NL80211_REKEY_DATA_KEK] = {
 704                 .type = NLA_EXACT_LEN_WARN,
 705                 .len = NL80211_KEK_LEN,
 706         },
 707         [NL80211_REKEY_DATA_KCK] = {
 708                 .type = NLA_EXACT_LEN_WARN,
 709                 .len = NL80211_KCK_LEN,
 710         },
 711         [NL80211_REKEY_DATA_REPLAY_CTR] = {
 712                 .type = NLA_EXACT_LEN_WARN,
 713                 .len = NL80211_REPLAY_CTR_LEN
 714         },
 715 };
 716
 717 static const struct nla_policy
 718 nl80211_match_band_rssi_policy[NUM_NL80211_BANDS] = {
 719         [NL80211_BAND_2GHZ] = { .type = NLA_S32 },
 720         [NL80211_BAND_5GHZ] = { .type = NLA_S32 },
 721         [NL80211_BAND_6GHZ] = { .type = NLA_S32 },
 722         [NL80211_BAND_60GHZ] = { .type = NLA_S32 },
 723 };
 724
 725 static const struct nla_policy
 726 nl80211_match_policy[NL80211_SCHED_SCAN_MATCH_ATTR_MAX + 1] = {
 727         [NL80211_SCHED_SCAN_MATCH_ATTR_SSID] = { .type = NLA_BINARY,
 728                                                  .len = IEEE80211_MAX_SSID_LEN },
 729         [NL80211_SCHED_SCAN_MATCH_ATTR_BSSID] = {
 730                 .type = NLA_EXACT_LEN_WARN,
 731                 .len = ETH_ALEN
 732         },
 733         [NL80211_SCHED_SCAN_MATCH_ATTR_RSSI] = { .type = NLA_U32 },
 734         [NL80211_SCHED_SCAN_MATCH_PER_BAND_RSSI] =
 735                 NLA_POLICY_NESTED(nl80211_match_band_rssi_policy),
 736 };
 737
 738 static const struct nla_policy
 739 nl80211_plan_policy[NL80211_SCHED_SCAN_PLAN_MAX + 1] = {
 740         [NL80211_SCHED_SCAN_PLAN_INTERVAL] = { .type = NLA_U32 },
 741         [NL80211_SCHED_SCAN_PLAN_ITERATIONS] = { .type = NLA_U32 },
 742 };
 743
 744 static const struct nla_policy
 745 nl80211_bss_select_policy[NL80211_BSS_SELECT_ATTR_MAX + 1] = {
 746         [NL80211_BSS_SELECT_ATTR_RSSI] = { .type = NLA_FLAG },
 747         [NL80211_BSS_SELECT_ATTR_BAND_PREF] = { .type = NLA_U32 },
 748         [NL80211_BSS_SELECT_ATTR_RSSI_ADJUST] = {
 749                 .len = sizeof(struct nl80211_bss_select_rssi_adjust)
 750         },
 751 };
 752
 753 /* policy for NAN function attributes */
 754 static const struct nla_policy
 755 nl80211_nan_func_policy[NL80211_NAN_FUNC_ATTR_MAX + 1] = {
 756         [NL80211_NAN_FUNC_TYPE] = { .type = NLA_U8 },
 757         [NL80211_NAN_FUNC_SERVICE_ID] = {
 758                                     .len = NL80211_NAN_FUNC_SERVICE_ID_LEN },
 759         [NL80211_NAN_FUNC_PUBLISH_TYPE] = { .type = NLA_U8 },
 760         [NL80211_NAN_FUNC_PUBLISH_BCAST] = { .type = NLA_FLAG },
 761         [NL80211_NAN_FUNC_SUBSCRIBE_ACTIVE] = { .type = NLA_FLAG },
 762         [NL80211_NAN_FUNC_FOLLOW_UP_ID] = { .type = NLA_U8 },
 763         [NL80211_NAN_FUNC_FOLLOW_UP_REQ_ID] = { .type = NLA_U8 },
 764         [NL80211_NAN_FUNC_FOLLOW_UP_DEST] = {
 765                 .type = NLA_EXACT_LEN_WARN,
 766                 .len = ETH_ALEN
 767         },
 768         [NL80211_NAN_FUNC_CLOSE_RANGE] = { .type = NLA_FLAG },
 769         [NL80211_NAN_FUNC_TTL] = { .type = NLA_U32 },
 770         [NL80211_NAN_FUNC_SERVICE_INFO] = { .type = NLA_BINARY,
 771                         .len = NL80211_NAN_FUNC_SERVICE_SPEC_INFO_MAX_LEN },
 772         [NL80211_NAN_FUNC_SRF] = { .type = NLA_NESTED },
 773         [NL80211_NAN_FUNC_RX_MATCH_FILTER] = { .type = NLA_NESTED },
 774         [NL80211_NAN_FUNC_TX_MATCH_FILTER] = { .type = NLA_NESTED },
 775         [NL80211_NAN_FUNC_INSTANCE_ID] = { .type = NLA_U8 },
 776         [NL80211_NAN_FUNC_TERM_REASON] = { .type = NLA_U8 },
 777 };
 778
 779 /* policy for Service Response Filter attributes */
 780 static const struct nla_policy
 781 nl80211_nan_srf_policy[NL80211_NAN_SRF_ATTR_MAX + 1] = {
 782         [NL80211_NAN_SRF_INCLUDE] = { .type = NLA_FLAG },
 783         [NL80211_NAN_SRF_BF] = { .type = NLA_BINARY,
 784                                  .len =  NL80211_NAN_FUNC_SRF_MAX_LEN },
 785         [NL80211_NAN_SRF_BF_IDX] = { .type = NLA_U8 },
 786         [NL80211_NAN_SRF_MAC_ADDRS] = { .type = NLA_NESTED },
 787 };
 788
 789 /* policy for packet pattern attributes */
 790 static const struct nla_policy
 791 nl80211_packet_pattern_policy[MAX_NL80211_PKTPAT + 1] = {
 792         [NL80211_PKTPAT_MASK] = { .type = NLA_BINARY, },
 793         [NL80211_PKTPAT_PATTERN] = { .type = NLA_BINARY, },
 794         [NL80211_PKTPAT_OFFSET] = { .type = NLA_U32 },
 795 };
 796
 797 int nl80211_prepare_wdev_dump(struct netlink_callback *cb,
 798                               struct cfg80211_registered_device **rdev,
 799                               struct wireless_dev **wdev)
 800 {
 801         int err;
 802
 803         if (!cb->args[0]) {
 804                 struct nlattr **attrbuf;
 805
 806                 attrbuf = kcalloc(NUM_NL80211_ATTR, sizeof(*attrbuf),
 807                                   GFP_KERNEL);
 808                 if (!attrbuf)
 809                         return -ENOMEM;
 810
 811                 err = nlmsg_parse_deprecated(cb->nlh,
 812                                              GENL_HDRLEN + nl80211_fam.hdrsize,
 813                                              attrbuf, nl80211_fam.maxattr,
 814                                              nl80211_policy, NULL);
 815                 if (err) {
 816                         kfree(attrbuf);
 817                         return err;
 818                 }
 819
 820                 *wdev = __cfg80211_wdev_from_attrs(sock_net(cb->skb->sk),
 821                                                    attrbuf);
 822                 kfree(attrbuf);
 823                 if (IS_ERR(*wdev))
 824                         return PTR_ERR(*wdev);
 825                 *rdev = wiphy_to_rdev((*wdev)->wiphy);
 826                 /* 0 is the first index - add 1 to parse only once */
 827                 cb->args[0] = (*rdev)->wiphy_idx + 1;
 828                 cb->args[1] = (*wdev)->identifier;
 829         } else {
 830                 /* subtract the 1 again here */
 831                 struct wiphy *wiphy = wiphy_idx_to_wiphy(cb->args[0] - 1);
 832                 struct wireless_dev *tmp;
 833
 834                 if (!wiphy)
 835                         return -ENODEV;
 836                 *rdev = wiphy_to_rdev(wiphy);
 837                 *wdev = NULL;
 838
 839                 list_for_each_entry(tmp, &(*rdev)->wiphy.wdev_list, list) {
 840                         if (tmp->identifier == cb->args[1]) {
 841                                 *wdev = tmp;
 842                                 break;
 843                         }
 844                 }
 845
 846                 if (!*wdev)
 847                         return -ENODEV;
 848         }
 849
 850         return 0;
 851 }
 852
 853 /* message building helper */
 854 void *nl80211hdr_put(struct sk_buff *skb, u32 portid, u32 seq,
 855                      int flags, u8 cmd)
 856 {
 857         /* since there is no private header just add the generic one */
 858         return genlmsg_put(skb, portid, seq, &nl80211_fam, flags, cmd);
 859 }
 860
 861 static int nl80211_msg_put_wmm_rules(struct sk_buff *msg,
 862                                      const struct ieee80211_reg_rule *rule)
 863 {
 864         int j;
 865         struct nlattr *nl_wmm_rules =
 866                 nla_nest_start_noflag(msg, NL80211_FREQUENCY_ATTR_WMM);
 867
 868         if (!nl_wmm_rules)
 869                 goto nla_put_failure;
 870
 871         for (j = 0; j < IEEE80211_NUM_ACS; j++) {
 872                 struct nlattr *nl_wmm_rule = nla_nest_start_noflag(msg, j);
 873
 874                 if (!nl_wmm_rule)
 875                         goto nla_put_failure;
 876
 877                 if (nla_put_u16(msg, NL80211_WMMR_CW_MIN,
 878                                 rule->wmm_rule.client[j].cw_min) ||
 879                     nla_put_u16(msg, NL80211_WMMR_CW_MAX,
 880                                 rule->wmm_rule.client[j].cw_max) ||
 881                     nla_put_u8(msg, NL80211_WMMR_AIFSN,
 882                                rule->wmm_rule.client[j].aifsn) ||
 883                     nla_put_u16(msg, NL80211_WMMR_TXOP,
 884                                 rule->wmm_rule.client[j].cot))
 885                         goto nla_put_failure;
 886
 887                 nla_nest_end(msg, nl_wmm_rule);
 888         }
 889         nla_nest_end(msg, nl_wmm_rules);
 890
 891         return 0;
 892
 893 nla_put_failure:
 894         return -ENOBUFS;
 895 }
 896
 897 static int nl80211_msg_put_channel(struct sk_buff *msg, struct wiphy *wiphy,
 898                                    struct ieee80211_channel *chan,
 899                                    bool large)
 900 {
 901         /* Some channels must be completely excluded from the
 902          * list to protect old user-space tools from breaking
 903          */
 904         if (!large && chan->flags &
 905             (IEEE80211_CHAN_NO_10MHZ | IEEE80211_CHAN_NO_20MHZ))
 906                 return 0;
 907
 908         if (nla_put_u32(msg, NL80211_FREQUENCY_ATTR_FREQ,
 909                         chan->center_freq))
 910                 goto nla_put_failure;
 911
 912         if ((chan->flags & IEEE80211_CHAN_DISABLED) &&
 913             nla_put_flag(msg, NL80211_FREQUENCY_ATTR_DISABLED))
 914                 goto nla_put_failure;
 915         if (chan->flags & IEEE80211_CHAN_NO_IR) {
 916                 if (nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_IR))
 917                         goto nla_put_failure;
 918                 if (nla_put_flag(msg, __NL80211_FREQUENCY_ATTR_NO_IBSS))
 919                         goto nla_put_failure;
 920         }
 921         if (chan->flags & IEEE80211_CHAN_RADAR) {
 922                 if (nla_put_flag(msg, NL80211_FREQUENCY_ATTR_RADAR))
 923                         goto nla_put_failure;
 924                 if (large) {
 925                         u32 time;
 926
 927                         time = elapsed_jiffies_msecs(chan->dfs_state_entered);
 928
 929                         if (nla_put_u32(msg, NL80211_FREQUENCY_ATTR_DFS_STATE,
 930                                         chan->dfs_state))
 931                                 goto nla_put_failure;
 932                         if (nla_put_u32(msg, NL80211_FREQUENCY_ATTR_DFS_TIME,
 933                                         time))
 934                                 goto nla_put_failure;
 935                         if (nla_put_u32(msg,
 936                                         NL80211_FREQUENCY_ATTR_DFS_CAC_TIME,
 937                                         chan->dfs_cac_ms))
 938                                 goto nla_put_failure;
 939                 }
 940         }
 941
 942         if (large) {
 943                 if ((chan->flags & IEEE80211_CHAN_NO_HT40MINUS) &&
 944                     nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_HT40_MINUS))
 945                         goto nla_put_failure;
 946                 if ((chan->flags & IEEE80211_CHAN_NO_HT40PLUS) &&
 947                     nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_HT40_PLUS))
 948                         goto nla_put_failure;
 949                 if ((chan->flags & IEEE80211_CHAN_NO_80MHZ) &&
 950                     nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_80MHZ))
 951                         goto nla_put_failure;
 952                 if ((chan->flags & IEEE80211_CHAN_NO_160MHZ) &&
 953                     nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_160MHZ))
 954                         goto nla_put_failure;
 955                 if ((chan->flags & IEEE80211_CHAN_INDOOR_ONLY) &&
 956                     nla_put_flag(msg, NL80211_FREQUENCY_ATTR_INDOOR_ONLY))
 957                         goto nla_put_failure;
 958                 if ((chan->flags & IEEE80211_CHAN_IR_CONCURRENT) &&
 959                     nla_put_flag(msg, NL80211_FREQUENCY_ATTR_IR_CONCURRENT))
 960                         goto nla_put_failure;
 961                 if ((chan->flags & IEEE80211_CHAN_NO_20MHZ) &&
 962                     nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_20MHZ))
 963                         goto nla_put_failure;
 964                 if ((chan->flags & IEEE80211_CHAN_NO_10MHZ) &&
 965                     nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_10MHZ))
 966                         goto nla_put_failure;
 967         }
 968
 969         if (nla_put_u32(msg, NL80211_FREQUENCY_ATTR_MAX_TX_POWER,
 970                         DBM_TO_MBM(chan->max_power)))
 971                 goto nla_put_failure;
 972
 973         if (large) {
 974                 const struct ieee80211_reg_rule *rule =
 975                         freq_reg_info(wiphy, MHZ_TO_KHZ(chan->center_freq));
 976
 977                 if (!IS_ERR_OR_NULL(rule) && rule->has_wmm) {
 978                         if (nl80211_msg_put_wmm_rules(msg, rule))
 979                                 goto nla_put_failure;
 980                 }
 981         }
 982
 983         return 0;
 984
 985  nla_put_failure:
 986         return -ENOBUFS;
 987 }
 988
 989 static bool nl80211_put_txq_stats(struct sk_buff *msg,
 990                                   struct cfg80211_txq_stats *txqstats,
 991                                   int attrtype)
 992 {
 993         struct nlattr *txqattr;
 994
 995 #define PUT_TXQVAL_U32(attr, memb) do {                                   \
 996         if (txqstats->filled & BIT(NL80211_TXQ_STATS_ ## attr) &&         \
 997             nla_put_u32(msg, NL80211_TXQ_STATS_ ## attr, txqstats->memb)) \
 998                 return false;                                             \
 999         } while (0)
1000
1001         txqattr = nla_nest_start_noflag(msg, attrtype);
1002         if (!txqattr)
1003                 return false;
1004
1005         PUT_TXQVAL_U32(BACKLOG_BYTES, backlog_bytes);
1006         PUT_TXQVAL_U32(BACKLOG_PACKETS, backlog_packets);
1007         PUT_TXQVAL_U32(FLOWS, flows);
1008         PUT_TXQVAL_U32(DROPS, drops);
1009         PUT_TXQVAL_U32(ECN_MARKS, ecn_marks);
1010         PUT_TXQVAL_U32(OVERLIMIT, overlimit);
1011         PUT_TXQVAL_U32(OVERMEMORY, overmemory);
1012         PUT_TXQVAL_U32(COLLISIONS, collisions);
1013         PUT_TXQVAL_U32(TX_BYTES, tx_bytes);
1014         PUT_TXQVAL_U32(TX_PACKETS, tx_packets);
1015         PUT_TXQVAL_U32(MAX_FLOWS, max_flows);
1016         nla_nest_end(msg, txqattr);
1017
1018 #undef PUT_TXQVAL_U32
1019         return true;
1020 }
1021
1022 /* netlink command implementations */
1023
1024 struct key_parse {
1025         struct key_params p;
1026         int idx;
1027         int type;
1028         bool def, defmgmt;
1029         bool def_uni, def_multi;
1030 };
1031
1032 static int nl80211_parse_key_new(struct genl_info *info, struct nlattr *key,
1033                                  struct key_parse *k)
1034 {
1035         struct nlattr *tb[NL80211_KEY_MAX + 1];
1036         int err = nla_parse_nested_deprecated(tb, NL80211_KEY_MAX, key,
1037                                               nl80211_key_policy,
1038                                               info->extack);
1039         if (err)
1040                 return err;
1041
1042         k->def = !!tb[NL80211_KEY_DEFAULT];
1043         k->defmgmt = !!tb[NL80211_KEY_DEFAULT_MGMT];
1044
1045         if (k->def) {
1046                 k->def_uni = true;
1047                 k->def_multi = true;
1048         }
1049         if (k->defmgmt)
1050                 k->def_multi = true;
1051
1052         if (tb[NL80211_KEY_IDX])
1053                 k->idx = nla_get_u8(tb[NL80211_KEY_IDX]);
1054
1055         if (tb[NL80211_KEY_DATA]) {
1056                 k->p.key = nla_data(tb[NL80211_KEY_DATA]);
1057                 k->p.key_len = nla_len(tb[NL80211_KEY_DATA]);
1058         }
1059
1060         if (tb[NL80211_KEY_SEQ]) {
1061                 k->p.seq = nla_data(tb[NL80211_KEY_SEQ]);
1062                 k->p.seq_len = nla_len(tb[NL80211_KEY_SEQ]);
1063         }
1064
1065         if (tb[NL80211_KEY_CIPHER])
1066                 k->p.cipher = nla_get_u32(tb[NL80211_KEY_CIPHER]);
1067
1068         if (tb[NL80211_KEY_TYPE])
1069                 k->type = nla_get_u32(tb[NL80211_KEY_TYPE]);
1070
1071         if (tb[NL80211_KEY_DEFAULT_TYPES]) {
1072                 struct nlattr *kdt[NUM_NL80211_KEY_DEFAULT_TYPES];
1073
1074                 err = nla_parse_nested_deprecated(kdt,
1075                                                   NUM_NL80211_KEY_DEFAULT_TYPES - 1,
1076                                                   tb[NL80211_KEY_DEFAULT_TYPES],
1077                                                   nl80211_key_default_policy,
1078                                                   info->extack);
1079                 if (err)
1080                         return err;
1081
1082                 k->def_uni = kdt[NL80211_KEY_DEFAULT_TYPE_UNICAST];
1083                 k->def_multi = kdt[NL80211_KEY_DEFAULT_TYPE_MULTICAST];
1084         }
1085
1086         if (tb[NL80211_KEY_MODE])
1087                 k->p.mode = nla_get_u8(tb[NL80211_KEY_MODE]);
1088
1089         return 0;
1090 }
1091
1092 static int nl80211_parse_key_old(struct genl_info *info, struct key_parse *k)
1093 {
1094         if (info->attrs[NL80211_ATTR_KEY_DATA]) {
1095                 k->p.key = nla_data(info->attrs[NL80211_ATTR_KEY_DATA]);
1096                 k->p.key_len = nla_len(info->attrs[NL80211_ATTR_KEY_DATA]);
1097         }
1098
1099         if (info->attrs[NL80211_ATTR_KEY_SEQ]) {
1100                 k->p.seq = nla_data(info->attrs[NL80211_ATTR_KEY_SEQ]);
1101                 k->p.seq_len = nla_len(info->attrs[NL80211_ATTR_KEY_SEQ]);
1102         }
1103
1104         if (info->attrs[NL80211_ATTR_KEY_IDX])
1105                 k->idx = nla_get_u8(info->attrs[NL80211_ATTR_KEY_IDX]);
1106
1107         if (info->attrs[NL80211_ATTR_KEY_CIPHER])
1108                 k->p.cipher = nla_get_u32(info->attrs[NL80211_ATTR_KEY_CIPHER]);
1109
1110         k->def = !!info->attrs[NL80211_ATTR_KEY_DEFAULT];
1111         k->defmgmt = !!info->attrs[NL80211_ATTR_KEY_DEFAULT_MGMT];
1112
1113         if (k->def) {
1114                 k->def_uni = true;
1115                 k->def_multi = true;
1116         }
1117         if (k->defmgmt)
1118                 k->def_multi = true;
1119
1120         if (info->attrs[NL80211_ATTR_KEY_TYPE])
1121                 k->type = nla_get_u32(info->attrs[NL80211_ATTR_KEY_TYPE]);
1122
1123         if (info->attrs[NL80211_ATTR_KEY_DEFAULT_TYPES]) {
1124                 struct nlattr *kdt[NUM_NL80211_KEY_DEFAULT_TYPES];
1125                 int err = nla_parse_nested_deprecated(kdt,
1126                                                       NUM_NL80211_KEY_DEFAULT_TYPES - 1,
1127                                                       info->attrs[NL80211_ATTR_KEY_DEFAULT_TYPES],
1128                                                       nl80211_key_default_policy,
1129                                                       info->extack);
1130                 if (err)
1131                         return err;
1132
1133                 k->def_uni = kdt[NL80211_KEY_DEFAULT_TYPE_UNICAST];
1134                 k->def_multi = kdt[NL80211_KEY_DEFAULT_TYPE_MULTICAST];
1135         }
1136
1137         return 0;
1138 }
1139
1140 static int nl80211_parse_key(struct genl_info *info, struct key_parse *k)
1141 {
1142         int err;
1143
1144         memset(k, 0, sizeof(*k));
1145         k->idx = -1;
1146         k->type = -1;
1147
1148         if (info->attrs[NL80211_ATTR_KEY])
1149                 err = nl80211_parse_key_new(info, info->attrs[NL80211_ATTR_KEY], k);
1150         else
1151                 err = nl80211_parse_key_old(info, k);
1152
1153         if (err)
1154                 return err;
1155
1156         if (k->def && k->defmgmt) {
1157                 GENL_SET_ERR_MSG(info, "key with def && defmgmt is invalid");
1158                 return -EINVAL;
1159         }
1160
1161         if (k->defmgmt) {
1162                 if (k->def_uni || !k->def_multi) {
1163                         GENL_SET_ERR_MSG(info, "defmgmt key must be mcast");
1164                         return -EINVAL;
1165                 }
1166         }
1167
1168         if (k->idx != -1) {
1169                 if (k->defmgmt) {
1170                         if (k->idx < 4 || k->idx > 5) {
1171                                 GENL_SET_ERR_MSG(info,
1172                                                  "defmgmt key idx not 4 or 5");
1173                                 return -EINVAL;
1174                         }
1175                 } else if (k->def) {
1176                         if (k->idx < 0 || k->idx > 3) {
1177                                 GENL_SET_ERR_MSG(info, "def key idx not 0-3");
1178                                 return -EINVAL;
1179                         }
1180                 } else {
1181                         if (k->idx < 0 || k->idx > 5) {
1182                                 GENL_SET_ERR_MSG(info, "key idx not 0-5");
1183                                 return -EINVAL;
1184                         }
1185                 }
1186         }
1187
1188         return 0;
1189 }
1190
1191 static struct cfg80211_cached_keys *
1192 nl80211_parse_connkeys(struct cfg80211_registered_device *rdev,
1193                        struct genl_info *info, bool *no_ht)
1194 {
1195         struct nlattr *keys = info->attrs[NL80211_ATTR_KEYS];
1196         struct key_parse parse;
1197         struct nlattr *key;
1198         struct cfg80211_cached_keys *result;
1199         int rem, err, def = 0;
1200         bool have_key = false;
1201
1202         nla_for_each_nested(key, keys, rem) {
1203                 have_key = true;
1204                 break;
1205         }
1206
1207         if (!have_key)
1208                 return NULL;
1209
1210         result = kzalloc(sizeof(*result), GFP_KERNEL);
1211         if (!result)
1212                 return ERR_PTR(-ENOMEM);
1213
1214         result->def = -1;
1215
1216         nla_for_each_nested(key, keys, rem) {
1217                 memset(&parse, 0, sizeof(parse));
1218                 parse.idx = -1;
1219
1220                 err = nl80211_parse_key_new(info, key, &parse);
1221                 if (err)
1222                         goto error;
1223                 err = -EINVAL;
1224                 if (!parse.p.key)
1225                         goto error;
1226                 if (parse.idx < 0 || parse.idx > 3) {
1227                         GENL_SET_ERR_MSG(info, "key index out of range [0-3]");
1228                         goto error;
1229                 }
1230                 if (parse.def) {
1231                         if (def) {
1232                                 GENL_SET_ERR_MSG(info,
1233                                                  "only one key can be default");
1234                                 goto error;
1235                         }
1236                         def = 1;
1237                         result->def = parse.idx;
1238                         if (!parse.def_uni || !parse.def_multi)
1239                                 goto error;
1240                 } else if (parse.defmgmt)
1241                         goto error;
1242                 err = cfg80211_validate_key_settings(rdev, &parse.p,
1243                                                      parse.idx, false, NULL);
1244                 if (err)
1245                         goto error;
1246                 if (parse.p.cipher != WLAN_CIPHER_SUITE_WEP40 &&
1247                     parse.p.cipher != WLAN_CIPHER_SUITE_WEP104) {
1248                         GENL_SET_ERR_MSG(info, "connect key must be WEP");
1249                         err = -EINVAL;
1250                         goto error;
1251                 }
1252                 result->params[parse.idx].cipher = parse.p.cipher;
1253                 result->params[parse.idx].key_len = parse.p.key_len;
1254                 result->params[parse.idx].key = result->data[parse.idx];
1255                 memcpy(result->data[parse.idx], parse.p.key, parse.p.key_len);
1256
1257                 /* must be WEP key if we got here */
1258                 if (no_ht)
1259                         *no_ht = true;
1260         }
1261
1262         if (result->def < 0) {
1263                 err = -EINVAL;
1264                 GENL_SET_ERR_MSG(info, "need a default/TX key");
1265                 goto error;
1266         }
1267
1268         return result;
1269  error:
1270         kfree(result);
1271         return ERR_PTR(err);
1272 }
1273
1274 static int nl80211_key_allowed(struct wireless_dev *wdev)
1275 {
1276         ASSERT_WDEV_LOCK(wdev);
1277
1278         switch (wdev->iftype) {
1279         case NL80211_IFTYPE_AP:
1280         case NL80211_IFTYPE_AP_VLAN:
1281         case NL80211_IFTYPE_P2P_GO:
1282         case NL80211_IFTYPE_MESH_POINT:
1283                 break;
1284         case NL80211_IFTYPE_ADHOC:
1285         case NL80211_IFTYPE_STATION:
1286         case NL80211_IFTYPE_P2P_CLIENT:
1287                 if (!wdev->current_bss)
1288                         return -ENOLINK;
1289                 break;
1290         case NL80211_IFTYPE_UNSPECIFIED:
1291         case NL80211_IFTYPE_OCB:
1292         case NL80211_IFTYPE_MONITOR:
1293         case NL80211_IFTYPE_NAN:
1294         case NL80211_IFTYPE_P2P_DEVICE:
1295         case NL80211_IFTYPE_WDS:
1296         case NUM_NL80211_IFTYPES:
1297                 return -EINVAL;
1298         }
1299
1300         return 0;
1301 }
1302
1303 static struct ieee80211_channel *nl80211_get_valid_chan(struct wiphy *wiphy,
1304                                                         struct nlattr *tb)
1305 {
1306         struct ieee80211_channel *chan;
1307
1308         if (tb == NULL)
1309                 return NULL;
1310         chan = ieee80211_get_channel(wiphy, nla_get_u32(tb));
1311         if (!chan || chan->flags & IEEE80211_CHAN_DISABLED)
1312                 return NULL;
1313         return chan;
1314 }
1315
1316 static int nl80211_put_iftypes(struct sk_buff *msg, u32 attr, u16 ifmodes)
1317 {
1318         struct nlattr *nl_modes = nla_nest_start_noflag(msg, attr);
1319         int i;
1320
1321         if (!nl_modes)
1322                 goto nla_put_failure;
1323
1324         i = 0;
1325         while (ifmodes) {
1326                 if ((ifmodes & 1) && nla_put_flag(msg, i))
1327                         goto nla_put_failure;
1328                 ifmodes >>= 1;
1329                 i++;
1330         }
1331
1332         nla_nest_end(msg, nl_modes);
1333         return 0;
1334
1335 nla_put_failure:
1336         return -ENOBUFS;
1337 }
1338
1339 static int nl80211_put_iface_combinations(struct wiphy *wiphy,
1340                                           struct sk_buff *msg,
1341                                           bool large)
1342 {
1343         struct nlattr *nl_combis;
1344         int i, j;
1345
1346         nl_combis = nla_nest_start_noflag(msg,
1347                                           NL80211_ATTR_INTERFACE_COMBINATIONS);
1348         if (!nl_combis)
1349                 goto nla_put_failure;
1350
1351         for (i = 0; i < wiphy->n_iface_combinations; i++) {
1352                 const struct ieee80211_iface_combination *c;
1353                 struct nlattr *nl_combi, *nl_limits;
1354
1355                 c = &wiphy->iface_combinations[i];
1356
1357                 nl_combi = nla_nest_start_noflag(msg, i + 1);
1358                 if (!nl_combi)
1359                         goto nla_put_failure;
1360
1361                 nl_limits = nla_nest_start_noflag(msg,
1362                                                   NL80211_IFACE_COMB_LIMITS);
1363                 if (!nl_limits)
1364                         goto nla_put_failure;
1365
1366                 for (j = 0; j < c->n_limits; j++) {
1367                         struct nlattr *nl_limit;
1368
1369                         nl_limit = nla_nest_start_noflag(msg, j + 1);
1370                         if (!nl_limit)
1371                                 goto nla_put_failure;
1372                         if (nla_put_u32(msg, NL80211_IFACE_LIMIT_MAX,
1373                                         c->limits[j].max))
1374                                 goto nla_put_failure;
1375                         if (nl80211_put_iftypes(msg, NL80211_IFACE_LIMIT_TYPES,
1376                                                 c->limits[j].types))
1377                                 goto nla_put_failure;
1378                         nla_nest_end(msg, nl_limit);
1379                 }
1380
1381                 nla_nest_end(msg, nl_limits);
1382
1383                 if (c->beacon_int_infra_match &&
1384                     nla_put_flag(msg, NL80211_IFACE_COMB_STA_AP_BI_MATCH))
1385                         goto nla_put_failure;
1386                 if (nla_put_u32(msg, NL80211_IFACE_COMB_NUM_CHANNELS,
1387                                 c->num_different_channels) ||
1388                     nla_put_u32(msg, NL80211_IFACE_COMB_MAXNUM,
1389                                 c->max_interfaces))
1390                         goto nla_put_failure;
1391                 if (large &&
1392                     (nla_put_u32(msg, NL80211_IFACE_COMB_RADAR_DETECT_WIDTHS,
1393                                 c->radar_detect_widths) ||
1394                      nla_put_u32(msg, NL80211_IFACE_COMB_RADAR_DETECT_REGIONS,
1395                                 c->radar_detect_regions)))
1396                         goto nla_put_failure;
1397                 if (c->beacon_int_min_gcd &&
1398                     nla_put_u32(msg, NL80211_IFACE_COMB_BI_MIN_GCD,
1399                                 c->beacon_int_min_gcd))
1400                         goto nla_put_failure;
1401
1402                 nla_nest_end(msg, nl_combi);
1403         }
1404
1405         nla_nest_end(msg, nl_combis);
1406
1407         return 0;
1408 nla_put_failure:
1409         return -ENOBUFS;
1410 }
1411
1412 #ifdef CONFIG_PM
1413 static int nl80211_send_wowlan_tcp_caps(struct cfg80211_registered_device *rdev,
1414                                         struct sk_buff *msg)
1415 {
1416         const struct wiphy_wowlan_tcp_support *tcp = rdev->wiphy.wowlan->tcp;
1417         struct nlattr *nl_tcp;
1418
1419         if (!tcp)
1420                 return 0;
1421
1422         nl_tcp = nla_nest_start_noflag(msg,
1423                                        NL80211_WOWLAN_TRIG_TCP_CONNECTION);
1424         if (!nl_tcp)
1425                 return -ENOBUFS;
1426
1427         if (nla_put_u32(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD,
1428                         tcp->data_payload_max))
1429                 return -ENOBUFS;
1430
1431         if (nla_put_u32(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD,
1432                         tcp->data_payload_max))
1433                 return -ENOBUFS;
1434
1435         if (tcp->seq && nla_put_flag(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ))
1436                 return -ENOBUFS;
1437
1438         if (tcp->tok && nla_put(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN,
1439                                 sizeof(*tcp->tok), tcp->tok))
1440                 return -ENOBUFS;
1441
1442         if (nla_put_u32(msg, NL80211_WOWLAN_TCP_DATA_INTERVAL,
1443                         tcp->data_interval_max))
1444                 return -ENOBUFS;
1445
1446         if (nla_put_u32(msg, NL80211_WOWLAN_TCP_WAKE_PAYLOAD,
1447                         tcp->wake_payload_max))
1448                 return -ENOBUFS;
1449
1450         nla_nest_end(msg, nl_tcp);
1451         return 0;
1452 }
1453
1454 static int nl80211_send_wowlan(struct sk_buff *msg,
1455                                struct cfg80211_registered_device *rdev,
1456                                bool large)
1457 {
1458         struct nlattr *nl_wowlan;
1459
1460         if (!rdev->wiphy.wowlan)
1461                 return 0;
1462
1463         nl_wowlan = nla_nest_start_noflag(msg,
1464                                           NL80211_ATTR_WOWLAN_TRIGGERS_SUPPORTED);
1465         if (!nl_wowlan)
1466                 return -ENOBUFS;
1467
1468         if (((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_ANY) &&
1469              nla_put_flag(msg, NL80211_WOWLAN_TRIG_ANY)) ||
1470             ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_DISCONNECT) &&
1471              nla_put_flag(msg, NL80211_WOWLAN_TRIG_DISCONNECT)) ||
1472             ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_MAGIC_PKT) &&
1473              nla_put_flag(msg, NL80211_WOWLAN_TRIG_MAGIC_PKT)) ||
1474             ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_SUPPORTS_GTK_REKEY) &&
1475              nla_put_flag(msg, NL80211_WOWLAN_TRIG_GTK_REKEY_SUPPORTED)) ||
1476             ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_GTK_REKEY_FAILURE) &&
1477              nla_put_flag(msg, NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE)) ||
1478             ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_EAP_IDENTITY_REQ) &&
1479              nla_put_flag(msg, NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST)) ||
1480             ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_4WAY_HANDSHAKE) &&
1481              nla_put_flag(msg, NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE)) ||
1482             ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_RFKILL_RELEASE) &&
1483              nla_put_flag(msg, NL80211_WOWLAN_TRIG_RFKILL_RELEASE)))
1484                 return -ENOBUFS;
1485
1486         if (rdev->wiphy.wowlan->n_patterns) {
1487                 struct nl80211_pattern_support pat = {
1488                         .max_patterns = rdev->wiphy.wowlan->n_patterns,
1489                         .min_pattern_len = rdev->wiphy.wowlan->pattern_min_len,
1490                         .max_pattern_len = rdev->wiphy.wowlan->pattern_max_len,
1491                         .max_pkt_offset = rdev->wiphy.wowlan->max_pkt_offset,
1492                 };
1493
1494                 if (nla_put(msg, NL80211_WOWLAN_TRIG_PKT_PATTERN,
1495                             sizeof(pat), &pat))
1496                         return -ENOBUFS;
1497         }
1498
1499         if ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_NET_DETECT) &&
1500             nla_put_u32(msg, NL80211_WOWLAN_TRIG_NET_DETECT,
1501                         rdev->wiphy.wowlan->max_nd_match_sets))
1502                 return -ENOBUFS;
1503
1504         if (large && nl80211_send_wowlan_tcp_caps(rdev, msg))
1505                 return -ENOBUFS;
1506
1507         nla_nest_end(msg, nl_wowlan);
1508
1509         return 0;
1510 }
1511 #endif
1512
1513 static int nl80211_send_coalesce(struct sk_buff *msg,
1514                                  struct cfg80211_registered_device *rdev)
1515 {
1516         struct nl80211_coalesce_rule_support rule;
1517
1518         if (!rdev->wiphy.coalesce)
1519                 return 0;
1520
1521         rule.max_rules = rdev->wiphy.coalesce->n_rules;
1522         rule.max_delay = rdev->wiphy.coalesce->max_delay;
1523         rule.pat.max_patterns = rdev->wiphy.coalesce->n_patterns;
1524         rule.pat.min_pattern_len = rdev->wiphy.coalesce->pattern_min_len;
1525         rule.pat.max_pattern_len = rdev->wiphy.coalesce->pattern_max_len;
1526         rule.pat.max_pkt_offset = rdev->wiphy.coalesce->max_pkt_offset;
1527
1528         if (nla_put(msg, NL80211_ATTR_COALESCE_RULE, sizeof(rule), &rule))
1529                 return -ENOBUFS;
1530
1531         return 0;
1532 }
1533
1534 static int
1535 nl80211_send_iftype_data(struct sk_buff *msg,
1536                          const struct ieee80211_sband_iftype_data *iftdata)
1537 {
1538         const struct ieee80211_sta_he_cap *he_cap = &iftdata->he_cap;
1539
1540         if (nl80211_put_iftypes(msg, NL80211_BAND_IFTYPE_ATTR_IFTYPES,
1541                                 iftdata->types_mask))
1542                 return -ENOBUFS;
1543
1544         if (he_cap->has_he) {
1545                 if (nla_put(msg, NL80211_BAND_IFTYPE_ATTR_HE_CAP_MAC,
1546                             sizeof(he_cap->he_cap_elem.mac_cap_info),
1547                             he_cap->he_cap_elem.mac_cap_info) ||
1548                     nla_put(msg, NL80211_BAND_IFTYPE_ATTR_HE_CAP_PHY,
1549                             sizeof(he_cap->he_cap_elem.phy_cap_info),
1550                             he_cap->he_cap_elem.phy_cap_info) ||
1551                     nla_put(msg, NL80211_BAND_IFTYPE_ATTR_HE_CAP_MCS_SET,
1552                             sizeof(he_cap->he_mcs_nss_supp),
1553                             &he_cap->he_mcs_nss_supp) ||
1554                     nla_put(msg, NL80211_BAND_IFTYPE_ATTR_HE_CAP_PPE,
1555                             sizeof(he_cap->ppe_thres), he_cap->ppe_thres))
1556                         return -ENOBUFS;
1557         }
1558
1559         return 0;
1560 }
1561
1562 static int nl80211_send_band_rateinfo(struct sk_buff *msg,
1563                                       struct ieee80211_supported_band *sband)
1564 {
1565         struct nlattr *nl_rates, *nl_rate;
1566         struct ieee80211_rate *rate;
1567         int i;
1568
1569         /* add HT info */
1570         if (sband->ht_cap.ht_supported &&
1571             (nla_put(msg, NL80211_BAND_ATTR_HT_MCS_SET,
1572                      sizeof(sband->ht_cap.mcs),
1573                      &sband->ht_cap.mcs) ||
1574              nla_put_u16(msg, NL80211_BAND_ATTR_HT_CAPA,
1575                          sband->ht_cap.cap) ||
1576              nla_put_u8(msg, NL80211_BAND_ATTR_HT_AMPDU_FACTOR,
1577                         sband->ht_cap.ampdu_factor) ||
1578              nla_put_u8(msg, NL80211_BAND_ATTR_HT_AMPDU_DENSITY,
1579                         sband->ht_cap.ampdu_density)))
1580                 return -ENOBUFS;
1581
1582         /* add VHT info */
1583         if (sband->vht_cap.vht_supported &&
1584             (nla_put(msg, NL80211_BAND_ATTR_VHT_MCS_SET,
1585                      sizeof(sband->vht_cap.vht_mcs),
1586                      &sband->vht_cap.vht_mcs) ||
1587              nla_put_u32(msg, NL80211_BAND_ATTR_VHT_CAPA,
1588                          sband->vht_cap.cap)))
1589                 return -ENOBUFS;
1590
1591         if (sband->n_iftype_data) {
1592                 struct nlattr *nl_iftype_data =
1593                         nla_nest_start_noflag(msg,
1594                                               NL80211_BAND_ATTR_IFTYPE_DATA);
1595                 int err;
1596
1597                 if (!nl_iftype_data)
1598                         return -ENOBUFS;
1599
1600                 for (i = 0; i < sband->n_iftype_data; i++) {
1601                         struct nlattr *iftdata;
1602
1603                         iftdata = nla_nest_start_noflag(msg, i + 1);
1604                         if (!iftdata)
1605                                 return -ENOBUFS;
1606
1607                         err = nl80211_send_iftype_data(msg,
1608                                                        &sband->iftype_data[i]);
1609                         if (err)
1610                                 return err;
1611
1612                         nla_nest_end(msg, iftdata);
1613                 }
1614
1615                 nla_nest_end(msg, nl_iftype_data);
1616         }
1617
1618         /* add EDMG info */
1619         if (sband->edmg_cap.channels &&
1620             (nla_put_u8(msg, NL80211_BAND_ATTR_EDMG_CHANNELS,
1621                        sband->edmg_cap.channels) ||
1622             nla_put_u8(msg, NL80211_BAND_ATTR_EDMG_BW_CONFIG,
1623                        sband->edmg_cap.bw_config)))
1624
1625                 return -ENOBUFS;
1626
1627         /* add bitrates */
1628         nl_rates = nla_nest_start_noflag(msg, NL80211_BAND_ATTR_RATES);
1629         if (!nl_rates)
1630                 return -ENOBUFS;
1631
1632         for (i = 0; i < sband->n_bitrates; i++) {
1633                 nl_rate = nla_nest_start_noflag(msg, i);
1634                 if (!nl_rate)
1635                         return -ENOBUFS;
1636
1637                 rate = &sband->bitrates[i];
1638                 if (nla_put_u32(msg, NL80211_BITRATE_ATTR_RATE,
1639                                 rate->bitrate))
1640                         return -ENOBUFS;
1641                 if ((rate->flags & IEEE80211_RATE_SHORT_PREAMBLE) &&
1642                     nla_put_flag(msg,
1643                                  NL80211_BITRATE_ATTR_2GHZ_SHORTPREAMBLE))
1644                         return -ENOBUFS;
1645
1646                 nla_nest_end(msg, nl_rate);
1647         }
1648
1649         nla_nest_end(msg, nl_rates);
1650
1651         return 0;
1652 }
1653
1654 static int
1655 nl80211_send_mgmt_stypes(struct sk_buff *msg,
1656                          const struct ieee80211_txrx_stypes *mgmt_stypes)
1657 {
1658         u16 stypes;
1659         struct nlattr *nl_ftypes, *nl_ifs;
1660         enum nl80211_iftype ift;
1661         int i;
1662
1663         if (!mgmt_stypes)
1664                 return 0;
1665
1666         nl_ifs = nla_nest_start_noflag(msg, NL80211_ATTR_TX_FRAME_TYPES);
1667         if (!nl_ifs)
1668                 return -ENOBUFS;
1669
1670         for (ift = 0; ift < NUM_NL80211_IFTYPES; ift++) {
1671                 nl_ftypes = nla_nest_start_noflag(msg, ift);
1672                 if (!nl_ftypes)
1673                         return -ENOBUFS;
1674                 i = 0;
1675                 stypes = mgmt_stypes[ift].tx;
1676                 while (stypes) {
1677                         if ((stypes & 1) &&
1678                             nla_put_u16(msg, NL80211_ATTR_FRAME_TYPE,
1679                                         (i << 4) | IEEE80211_FTYPE_MGMT))
1680                                 return -ENOBUFS;
1681                         stypes >>= 1;
1682                         i++;
1683                 }
1684                 nla_nest_end(msg, nl_ftypes);
1685         }
1686
1687         nla_nest_end(msg, nl_ifs);
1688
1689         nl_ifs = nla_nest_start_noflag(msg, NL80211_ATTR_RX_FRAME_TYPES);
1690         if (!nl_ifs)
1691                 return -ENOBUFS;
1692
1693         for (ift = 0; ift < NUM_NL80211_IFTYPES; ift++) {
1694                 nl_ftypes = nla_nest_start_noflag(msg, ift);
1695                 if (!nl_ftypes)
1696                         return -ENOBUFS;
1697                 i = 0;
1698                 stypes = mgmt_stypes[ift].rx;
1699                 while (stypes) {
1700                         if ((stypes & 1) &&
1701                             nla_put_u16(msg, NL80211_ATTR_FRAME_TYPE,
1702                                         (i << 4) | IEEE80211_FTYPE_MGMT))
1703                                 return -ENOBUFS;
1704                         stypes >>= 1;
1705                         i++;
1706                 }
1707                 nla_nest_end(msg, nl_ftypes);
1708         }
1709         nla_nest_end(msg, nl_ifs);
1710
1711         return 0;
1712 }
1713
1714 #define CMD(op, n)                                                      \
1715          do {                                                           \
1716                 if (rdev->ops->op) {                                    \
1717                         i++;                                            \
1718                         if (nla_put_u32(msg, i, NL80211_CMD_ ## n))     \
1719                                 goto nla_put_failure;                   \
1720                 }                                                       \
1721         } while (0)
1722
1723 static int nl80211_add_commands_unsplit(struct cfg80211_registered_device *rdev,
1724                                         struct sk_buff *msg)
1725 {
1726         int i = 0;
1727
1728         /*
1729          * do *NOT* add anything into this function, new things need to be
1730          * advertised only to new versions of userspace that can deal with
1731          * the split (and they can't possibly care about new features...
1732          */
1733         CMD(add_virtual_intf, NEW_INTERFACE);
1734         CMD(change_virtual_intf, SET_INTERFACE);
1735         CMD(add_key, NEW_KEY);
1736         CMD(start_ap, START_AP);
1737         CMD(add_station, NEW_STATION);
1738         CMD(add_mpath, NEW_MPATH);
1739         CMD(update_mesh_config, SET_MESH_CONFIG);
1740         CMD(change_bss, SET_BSS);
1741         CMD(auth, AUTHENTICATE);
1742         CMD(assoc, ASSOCIATE);
1743         CMD(deauth, DEAUTHENTICATE);
1744         CMD(disassoc, DISASSOCIATE);
1745         CMD(join_ibss, JOIN_IBSS);
1746         CMD(join_mesh, JOIN_MESH);
1747         CMD(set_pmksa, SET_PMKSA);
1748         CMD(del_pmksa, DEL_PMKSA);
1749         CMD(flush_pmksa, FLUSH_PMKSA);
1750         if (rdev->wiphy.flags & WIPHY_FLAG_HAS_REMAIN_ON_CHANNEL)
1751                 CMD(remain_on_channel, REMAIN_ON_CHANNEL);
1752         CMD(set_bitrate_mask, SET_TX_BITRATE_MASK);
1753         CMD(mgmt_tx, FRAME);
1754         CMD(mgmt_tx_cancel_wait, FRAME_WAIT_CANCEL);
1755         if (rdev->wiphy.flags & WIPHY_FLAG_NETNS_OK) {
1756                 i++;
1757                 if (nla_put_u32(msg, i, NL80211_CMD_SET_WIPHY_NETNS))
1758                         goto nla_put_failure;
1759         }
1760         if (rdev->ops->set_monitor_channel || rdev->ops->start_ap ||
1761             rdev->ops->join_mesh) {
1762                 i++;
1763                 if (nla_put_u32(msg, i, NL80211_CMD_SET_CHANNEL))
1764                         goto nla_put_failure;
1765         }
1766         CMD(set_wds_peer, SET_WDS_PEER);
1767         if (rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS) {
1768                 CMD(tdls_mgmt, TDLS_MGMT);
1769                 CMD(tdls_oper, TDLS_OPER);
1770         }
1771         if (rdev->wiphy.max_sched_scan_reqs)
1772                 CMD(sched_scan_start, START_SCHED_SCAN);
1773         CMD(probe_client, PROBE_CLIENT);
1774         CMD(set_noack_map, SET_NOACK_MAP);
1775         if (rdev->wiphy.flags & WIPHY_FLAG_REPORTS_OBSS) {
1776                 i++;
1777                 if (nla_put_u32(msg, i, NL80211_CMD_REGISTER_BEACONS))
1778                         goto nla_put_failure;
1779         }
1780         CMD(start_p2p_device, START_P2P_DEVICE);
1781         CMD(set_mcast_rate, SET_MCAST_RATE);
1782 #ifdef CONFIG_NL80211_TESTMODE
1783         CMD(testmode_cmd, TESTMODE);
1784 #endif
1785
1786         if (rdev->ops->connect || rdev->ops->auth) {
1787                 i++;
1788                 if (nla_put_u32(msg, i, NL80211_CMD_CONNECT))
1789                         goto nla_put_failure;
1790         }
1791
1792         if (rdev->ops->disconnect || rdev->ops->deauth) {
1793                 i++;
1794                 if (nla_put_u32(msg, i, NL80211_CMD_DISCONNECT))
1795                         goto nla_put_failure;
1796         }
1797
1798         return i;
1799  nla_put_failure:
1800         return -ENOBUFS;
1801 }
1802
1803 static int
1804 nl80211_send_pmsr_ftm_capa(const struct cfg80211_pmsr_capabilities *cap,
1805                            struct sk_buff *msg)
1806 {
1807         struct nlattr *ftm;
1808
1809         if (!cap->ftm.supported)
1810                 return 0;
1811
1812         ftm = nla_nest_start_noflag(msg, NL80211_PMSR_TYPE_FTM);
1813         if (!ftm)
1814                 return -ENOBUFS;
1815
1816         if (cap->ftm.asap && nla_put_flag(msg, NL80211_PMSR_FTM_CAPA_ATTR_ASAP))
1817                 return -ENOBUFS;
1818         if (cap->ftm.non_asap &&
1819             nla_put_flag(msg, NL80211_PMSR_FTM_CAPA_ATTR_NON_ASAP))
1820                 return -ENOBUFS;
1821         if (cap->ftm.request_lci &&
1822             nla_put_flag(msg, NL80211_PMSR_FTM_CAPA_ATTR_REQ_LCI))
1823                 return -ENOBUFS;
1824         if (cap->ftm.request_civicloc &&
1825             nla_put_flag(msg, NL80211_PMSR_FTM_CAPA_ATTR_REQ_CIVICLOC))
1826                 return -ENOBUFS;
1827         if (nla_put_u32(msg, NL80211_PMSR_FTM_CAPA_ATTR_PREAMBLES,
1828                         cap->ftm.preambles))
1829                 return -ENOBUFS;
1830         if (nla_put_u32(msg, NL80211_PMSR_FTM_CAPA_ATTR_BANDWIDTHS,
1831                         cap->ftm.bandwidths))
1832                 return -ENOBUFS;
1833         if (cap->ftm.max_bursts_exponent >= 0 &&
1834             nla_put_u32(msg, NL80211_PMSR_FTM_CAPA_ATTR_MAX_BURSTS_EXPONENT,
1835                         cap->ftm.max_bursts_exponent))
1836                 return -ENOBUFS;
1837         if (cap->ftm.max_ftms_per_burst &&
1838             nla_put_u32(msg, NL80211_PMSR_FTM_CAPA_ATTR_MAX_FTMS_PER_BURST,
1839                         cap->ftm.max_ftms_per_burst))
1840                 return -ENOBUFS;
1841
1842         nla_nest_end(msg, ftm);
1843         return 0;
1844 }
1845
1846 static int nl80211_send_pmsr_capa(struct cfg80211_registered_device *rdev,
1847                                   struct sk_buff *msg)
1848 {
1849         const struct cfg80211_pmsr_capabilities *cap = rdev->wiphy.pmsr_capa;
1850         struct nlattr *pmsr, *caps;
1851
1852         if (!cap)
1853                 return 0;
1854
1855         /*
1856          * we don't need to clean up anything here since the caller
1857          * will genlmsg_cancel() if we fail
1858          */
1859
1860         pmsr = nla_nest_start_noflag(msg, NL80211_ATTR_PEER_MEASUREMENTS);
1861         if (!pmsr)
1862                 return -ENOBUFS;
1863
1864         if (nla_put_u32(msg, NL80211_PMSR_ATTR_MAX_PEERS, cap->max_peers))
1865                 return -ENOBUFS;
1866
1867         if (cap->report_ap_tsf &&
1868             nla_put_flag(msg, NL80211_PMSR_ATTR_REPORT_AP_TSF))
1869                 return -ENOBUFS;
1870
1871         if (cap->randomize_mac_addr &&
1872             nla_put_flag(msg, NL80211_PMSR_ATTR_RANDOMIZE_MAC_ADDR))
1873                 return -ENOBUFS;
1874
1875         caps = nla_nest_start_noflag(msg, NL80211_PMSR_ATTR_TYPE_CAPA);
1876         if (!caps)
1877                 return -ENOBUFS;
1878
1879         if (nl80211_send_pmsr_ftm_capa(cap, msg))
1880                 return -ENOBUFS;
1881
1882         nla_nest_end(msg, caps);
1883         nla_nest_end(msg, pmsr);
1884
1885         return 0;
1886 }
1887
1888 struct nl80211_dump_wiphy_state {
1889         s64 filter_wiphy;
1890         long start;
1891         long split_start, band_start, chan_start, capa_start;
1892         bool split;
1893 };
1894
1895 static int nl80211_send_wiphy(struct cfg80211_registered_device *rdev,
1896                               enum nl80211_commands cmd,
1897                               struct sk_buff *msg, u32 portid, u32 seq,
1898                               int flags, struct nl80211_dump_wiphy_state *state)
1899 {
1900         void *hdr;
1901         struct nlattr *nl_bands, *nl_band;
1902         struct nlattr *nl_freqs, *nl_freq;
1903         struct nlattr *nl_cmds;
1904         enum nl80211_band band;
1905         struct ieee80211_channel *chan;
1906         int i;
1907         const struct ieee80211_txrx_stypes *mgmt_stypes =
1908                                 rdev->wiphy.mgmt_stypes;
1909         u32 features;
1910
1911         hdr = nl80211hdr_put(msg, portid, seq, flags, cmd);
1912         if (!hdr)
1913                 return -ENOBUFS;
1914
1915         if (WARN_ON(!state))
1916                 return -EINVAL;
1917
1918         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
1919             nla_put_string(msg, NL80211_ATTR_WIPHY_NAME,
1920                            wiphy_name(&rdev->wiphy)) ||
1921             nla_put_u32(msg, NL80211_ATTR_GENERATION,
1922                         cfg80211_rdev_list_generation))
1923                 goto nla_put_failure;
1924
1925         if (cmd != NL80211_CMD_NEW_WIPHY)
1926                 goto finish;
1927
1928         switch (state->split_start) {
1929         case 0:
1930                 if (nla_put_u8(msg, NL80211_ATTR_WIPHY_RETRY_SHORT,
1931                                rdev->wiphy.retry_short) ||
1932                     nla_put_u8(msg, NL80211_ATTR_WIPHY_RETRY_LONG,
1933                                rdev->wiphy.retry_long) ||
1934                     nla_put_u32(msg, NL80211_ATTR_WIPHY_FRAG_THRESHOLD,
1935                                 rdev->wiphy.frag_threshold) ||
1936                     nla_put_u32(msg, NL80211_ATTR_WIPHY_RTS_THRESHOLD,
1937                                 rdev->wiphy.rts_threshold) ||
1938                     nla_put_u8(msg, NL80211_ATTR_WIPHY_COVERAGE_CLASS,
1939                                rdev->wiphy.coverage_class) ||
1940                     nla_put_u8(msg, NL80211_ATTR_MAX_NUM_SCAN_SSIDS,
1941                                rdev->wiphy.max_scan_ssids) ||
1942                     nla_put_u8(msg, NL80211_ATTR_MAX_NUM_SCHED_SCAN_SSIDS,
1943                                rdev->wiphy.max_sched_scan_ssids) ||
1944                     nla_put_u16(msg, NL80211_ATTR_MAX_SCAN_IE_LEN,
1945                                 rdev->wiphy.max_scan_ie_len) ||
1946                     nla_put_u16(msg, NL80211_ATTR_MAX_SCHED_SCAN_IE_LEN,
1947                                 rdev->wiphy.max_sched_scan_ie_len) ||
1948                     nla_put_u8(msg, NL80211_ATTR_MAX_MATCH_SETS,
1949                                rdev->wiphy.max_match_sets) ||
1950                     nla_put_u32(msg, NL80211_ATTR_MAX_NUM_SCHED_SCAN_PLANS,
1951                                 rdev->wiphy.max_sched_scan_plans) ||
1952                     nla_put_u32(msg, NL80211_ATTR_MAX_SCAN_PLAN_INTERVAL,
1953                                 rdev->wiphy.max_sched_scan_plan_interval) ||
1954                     nla_put_u32(msg, NL80211_ATTR_MAX_SCAN_PLAN_ITERATIONS,
1955                                 rdev->wiphy.max_sched_scan_plan_iterations))
1956                         goto nla_put_failure;
1957
1958                 if ((rdev->wiphy.flags & WIPHY_FLAG_IBSS_RSN) &&
1959                     nla_put_flag(msg, NL80211_ATTR_SUPPORT_IBSS_RSN))
1960                         goto nla_put_failure;
1961                 if ((rdev->wiphy.flags & WIPHY_FLAG_MESH_AUTH) &&
1962                     nla_put_flag(msg, NL80211_ATTR_SUPPORT_MESH_AUTH))
1963                         goto nla_put_failure;
1964                 if ((rdev->wiphy.flags & WIPHY_FLAG_AP_UAPSD) &&
1965                     nla_put_flag(msg, NL80211_ATTR_SUPPORT_AP_UAPSD))
1966                         goto nla_put_failure;
1967                 if ((rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_FW_ROAM) &&
1968                     nla_put_flag(msg, NL80211_ATTR_ROAM_SUPPORT))
1969                         goto nla_put_failure;
1970                 if ((rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS) &&
1971                     nla_put_flag(msg, NL80211_ATTR_TDLS_SUPPORT))
1972                         goto nla_put_failure;
1973                 if ((rdev->wiphy.flags & WIPHY_FLAG_TDLS_EXTERNAL_SETUP) &&
1974                     nla_put_flag(msg, NL80211_ATTR_TDLS_EXTERNAL_SETUP))
1975                         goto nla_put_failure;
1976                 state->split_start++;
1977                 if (state->split)
1978                         break;
1979                 /* fall through */
1980         case 1:
1981                 if (nla_put(msg, NL80211_ATTR_CIPHER_SUITES,
1982                             sizeof(u32) * rdev->wiphy.n_cipher_suites,
1983                             rdev->wiphy.cipher_suites))
1984                         goto nla_put_failure;
1985
1986                 if (nla_put_u8(msg, NL80211_ATTR_MAX_NUM_PMKIDS,
1987                                rdev->wiphy.max_num_pmkids))
1988                         goto nla_put_failure;
1989
1990                 if ((rdev->wiphy.flags & WIPHY_FLAG_CONTROL_PORT_PROTOCOL) &&
1991                     nla_put_flag(msg, NL80211_ATTR_CONTROL_PORT_ETHERTYPE))
1992                         goto nla_put_failure;
1993
1994                 if (nla_put_u32(msg, NL80211_ATTR_WIPHY_ANTENNA_AVAIL_TX,
1995                                 rdev->wiphy.available_antennas_tx) ||
1996                     nla_put_u32(msg, NL80211_ATTR_WIPHY_ANTENNA_AVAIL_RX,
1997                                 rdev->wiphy.available_antennas_rx))
1998                         goto nla_put_failure;
1999
2000                 if ((rdev->wiphy.flags & WIPHY_FLAG_AP_PROBE_RESP_OFFLOAD) &&
2001                     nla_put_u32(msg, NL80211_ATTR_PROBE_RESP_OFFLOAD,
2002                                 rdev->wiphy.probe_resp_offload))
2003                         goto nla_put_failure;
2004
2005                 if ((rdev->wiphy.available_antennas_tx ||
2006                      rdev->wiphy.available_antennas_rx) &&
2007                     rdev->ops->get_antenna) {
2008                         u32 tx_ant = 0, rx_ant = 0;
2009                         int res;
2010
2011                         res = rdev_get_antenna(rdev, &tx_ant, &rx_ant);
2012                         if (!res) {
2013                                 if (nla_put_u32(msg,
2014                                                 NL80211_ATTR_WIPHY_ANTENNA_TX,
2015                                                 tx_ant) ||
2016                                     nla_put_u32(msg,
2017                                                 NL80211_ATTR_WIPHY_ANTENNA_RX,
2018                                                 rx_ant))
2019                                         goto nla_put_failure;
2020                         }
2021                 }
2022
2023                 state->split_start++;
2024                 if (state->split)
2025                         break;
2026                 /* fall through */
2027         case 2:
2028                 if (nl80211_put_iftypes(msg, NL80211_ATTR_SUPPORTED_IFTYPES,
2029                                         rdev->wiphy.interface_modes))
2030                                 goto nla_put_failure;
2031                 state->split_start++;
2032                 if (state->split)
2033                         break;
2034                 /* fall through */
2035         case 3:
2036                 nl_bands = nla_nest_start_noflag(msg,
2037                                                  NL80211_ATTR_WIPHY_BANDS);
2038                 if (!nl_bands)
2039                         goto nla_put_failure;
2040
2041                 for (band = state->band_start;
2042                      band < NUM_NL80211_BANDS; band++) {
2043                         struct ieee80211_supported_band *sband;
2044
2045                         sband = rdev->wiphy.bands[band];
2046
2047                         if (!sband)
2048                                 continue;
2049
2050                         nl_band = nla_nest_start_noflag(msg, band);
2051                         if (!nl_band)
2052                                 goto nla_put_failure;
2053
2054                         switch (state->chan_start) {
2055                         case 0:
2056                                 if (nl80211_send_band_rateinfo(msg, sband))
2057                                         goto nla_put_failure;
2058                                 state->chan_start++;
2059                                 if (state->split)
2060                                         break;
2061                                 /* fall through */
2062                         default:
2063                                 /* add frequencies */
2064                                 nl_freqs = nla_nest_start_noflag(msg,
2065                                                                  NL80211_BAND_ATTR_FREQS);
2066                                 if (!nl_freqs)
2067                                         goto nla_put_failure;
2068
2069                                 for (i = state->chan_start - 1;
2070                                      i < sband->n_channels;
2071                                      i++) {
2072                                         nl_freq = nla_nest_start_noflag(msg,
2073                                                                         i);
2074                                         if (!nl_freq)
2075                                                 goto nla_put_failure;
2076
2077                                         chan = &sband->channels[i];
2078
2079                                         if (nl80211_msg_put_channel(
2080                                                         msg, &rdev->wiphy, chan,
2081                                                         state->split))
2082                                                 goto nla_put_failure;
2083
2084                                         nla_nest_end(msg, nl_freq);
2085                                         if (state->split)
2086                                                 break;
2087                                 }
2088                                 if (i < sband->n_channels)
2089                                         state->chan_start = i + 2;
2090                                 else
2091                                         state->chan_start = 0;
2092                                 nla_nest_end(msg, nl_freqs);
2093                         }
2094
2095                         nla_nest_end(msg, nl_band);
2096
2097                         if (state->split) {
2098                                 /* start again here */
2099                                 if (state->chan_start)
2100                                         band--;
2101                                 break;
2102                         }
2103                 }
2104                 nla_nest_end(msg, nl_bands);
2105
2106                 if (band < NUM_NL80211_BANDS)
2107                         state->band_start = band + 1;
2108                 else
2109                         state->band_start = 0;
2110
2111                 /* if bands & channels are done, continue outside */
2112                 if (state->band_start == 0 && state->chan_start == 0)
2113                         state->split_start++;
2114                 if (state->split)
2115                         break;
2116                 /* fall through */
2117         case 4:
2118                 nl_cmds = nla_nest_start_noflag(msg,
2119                                                 NL80211_ATTR_SUPPORTED_COMMANDS);
2120                 if (!nl_cmds)
2121                         goto nla_put_failure;
2122
2123                 i = nl80211_add_commands_unsplit(rdev, msg);
2124                 if (i < 0)
2125                         goto nla_put_failure;
2126                 if (state->split) {
2127                         CMD(crit_proto_start, CRIT_PROTOCOL_START);
2128                         CMD(crit_proto_stop, CRIT_PROTOCOL_STOP);
2129                         if (rdev->wiphy.flags & WIPHY_FLAG_HAS_CHANNEL_SWITCH)
2130                                 CMD(channel_switch, CHANNEL_SWITCH);
2131                         CMD(set_qos_map, SET_QOS_MAP);
2132                         if (rdev->wiphy.features &
2133                                         NL80211_FEATURE_SUPPORTS_WMM_ADMISSION)
2134                                 CMD(add_tx_ts, ADD_TX_TS);
2135                         CMD(set_multicast_to_unicast, SET_MULTICAST_TO_UNICAST);
2136                         CMD(update_connect_params, UPDATE_CONNECT_PARAMS);
2137                         CMD(update_ft_ies, UPDATE_FT_IES);
2138                 }
2139 #undef CMD
2140
2141                 nla_nest_end(msg, nl_cmds);
2142                 state->split_start++;
2143                 if (state->split)
2144                         break;
2145                 /* fall through */
2146         case 5:
2147                 if (rdev->ops->remain_on_channel &&
2148                     (rdev->wiphy.flags & WIPHY_FLAG_HAS_REMAIN_ON_CHANNEL) &&
2149                     nla_put_u32(msg,
2150                                 NL80211_ATTR_MAX_REMAIN_ON_CHANNEL_DURATION,
2151                                 rdev->wiphy.max_remain_on_channel_duration))
2152                         goto nla_put_failure;
2153
2154                 if ((rdev->wiphy.flags & WIPHY_FLAG_OFFCHAN_TX) &&
2155                     nla_put_flag(msg, NL80211_ATTR_OFFCHANNEL_TX_OK))
2156                         goto nla_put_failure;
2157
2158                 if (nl80211_send_mgmt_stypes(msg, mgmt_stypes))
2159                         goto nla_put_failure;
2160                 state->split_start++;
2161                 if (state->split)
2162                         break;
2163                 /* fall through */
2164         case 6:
2165 #ifdef CONFIG_PM
2166                 if (nl80211_send_wowlan(msg, rdev, state->split))
2167                         goto nla_put_failure;
2168                 state->split_start++;
2169                 if (state->split)
2170                         break;
2171 #else
2172                 state->split_start++;
2173 #endif
2174                 /* fall through */
2175         case 7:
2176                 if (nl80211_put_iftypes(msg, NL80211_ATTR_SOFTWARE_IFTYPES,
2177                                         rdev->wiphy.software_iftypes))
2178                         goto nla_put_failure;
2179
2180                 if (nl80211_put_iface_combinations(&rdev->wiphy, msg,
2181                                                    state->split))
2182                         goto nla_put_failure;
2183
2184                 state->split_start++;
2185                 if (state->split)
2186                         break;
2187                 /* fall through */
2188         case 8:
2189                 if ((rdev->wiphy.flags & WIPHY_FLAG_HAVE_AP_SME) &&
2190                     nla_put_u32(msg, NL80211_ATTR_DEVICE_AP_SME,
2191                                 rdev->wiphy.ap_sme_capa))
2192                         goto nla_put_failure;
2193
2194                 features = rdev->wiphy.features;
2195                 /*
2196                  * We can only add the per-channel limit information if the
2197                  * dump is split, otherwise it makes it too big. Therefore
2198                  * only advertise it in that case.
2199                  */
2200                 if (state->split)
2201                         features |= NL80211_FEATURE_ADVERTISE_CHAN_LIMITS;
2202                 if (nla_put_u32(msg, NL80211_ATTR_FEATURE_FLAGS, features))
2203                         goto nla_put_failure;
2204
2205                 if (rdev->wiphy.ht_capa_mod_mask &&
2206                     nla_put(msg, NL80211_ATTR_HT_CAPABILITY_MASK,
2207                             sizeof(*rdev->wiphy.ht_capa_mod_mask),
2208                             rdev->wiphy.ht_capa_mod_mask))
2209                         goto nla_put_failure;
2210
2211                 if (rdev->wiphy.flags & WIPHY_FLAG_HAVE_AP_SME &&
2212                     rdev->wiphy.max_acl_mac_addrs &&
2213                     nla_put_u32(msg, NL80211_ATTR_MAC_ACL_MAX,
2214                                 rdev->wiphy.max_acl_mac_addrs))
2215                         goto nla_put_failure;
2216
2217                 /*
2218                  * Any information below this point is only available to
2219                  * applications that can deal with it being split. This
2220                  * helps ensure that newly added capabilities don't break
2221                  * older tools by overrunning their buffers.
2222                  *
2223                  * We still increment split_start so that in the split
2224                  * case we'll continue with more data in the next round,
2225                  * but break unconditionally so unsplit data stops here.
2226                  */
2227                 state->split_start++;
2228                 break;
2229         case 9:
2230                 if (rdev->wiphy.extended_capabilities &&
2231                     (nla_put(msg, NL80211_ATTR_EXT_CAPA,
2232                              rdev->wiphy.extended_capabilities_len,
2233                              rdev->wiphy.extended_capabilities) ||
2234                      nla_put(msg, NL80211_ATTR_EXT_CAPA_MASK,
2235                              rdev->wiphy.extended_capabilities_len,
2236                              rdev->wiphy.extended_capabilities_mask)))
2237                         goto nla_put_failure;
2238
2239                 if (rdev->wiphy.vht_capa_mod_mask &&
2240                     nla_put(msg, NL80211_ATTR_VHT_CAPABILITY_MASK,
2241                             sizeof(*rdev->wiphy.vht_capa_mod_mask),
2242                             rdev->wiphy.vht_capa_mod_mask))
2243                         goto nla_put_failure;
2244
2245                 if (nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN,
2246                             rdev->wiphy.perm_addr))
2247                         goto nla_put_failure;
2248
2249                 if (!is_zero_ether_addr(rdev->wiphy.addr_mask) &&
2250                     nla_put(msg, NL80211_ATTR_MAC_MASK, ETH_ALEN,
2251                             rdev->wiphy.addr_mask))
2252                         goto nla_put_failure;
2253
2254                 if (rdev->wiphy.n_addresses > 1) {
2255                         void *attr;
2256
2257                         attr = nla_nest_start(msg, NL80211_ATTR_MAC_ADDRS);
2258                         if (!attr)
2259                                 goto nla_put_failure;
2260
2261                         for (i = 0; i < rdev->wiphy.n_addresses; i++)
2262                                 if (nla_put(msg, i + 1, ETH_ALEN,
2263                                             rdev->wiphy.addresses[i].addr))
2264                                         goto nla_put_failure;
2265
2266                         nla_nest_end(msg, attr);
2267                 }
2268
2269                 state->split_start++;
2270                 break;
2271         case 10:
2272                 if (nl80211_send_coalesce(msg, rdev))
2273                         goto nla_put_failure;
2274
2275                 if ((rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_5_10_MHZ) &&
2276                     (nla_put_flag(msg, NL80211_ATTR_SUPPORT_5_MHZ) ||
2277                      nla_put_flag(msg, NL80211_ATTR_SUPPORT_10_MHZ)))
2278                         goto nla_put_failure;
2279
2280                 if (rdev->wiphy.max_ap_assoc_sta &&
2281                     nla_put_u32(msg, NL80211_ATTR_MAX_AP_ASSOC_STA,
2282                                 rdev->wiphy.max_ap_assoc_sta))
2283                         goto nla_put_failure;
2284
2285                 state->split_start++;
2286                 break;
2287         case 11:
2288                 if (rdev->wiphy.n_vendor_commands) {
2289                         const struct nl80211_vendor_cmd_info *info;
2290                         struct nlattr *nested;
2291
2292                         nested = nla_nest_start_noflag(msg,
2293                                                        NL80211_ATTR_VENDOR_DATA);
2294                         if (!nested)
2295                                 goto nla_put_failure;
2296
2297                         for (i = 0; i < rdev->wiphy.n_vendor_commands; i++) {
2298                                 info = &rdev->wiphy.vendor_commands[i].info;
2299                                 if (nla_put(msg, i + 1, sizeof(*info), info))
2300                                         goto nla_put_failure;
2301                         }
2302                         nla_nest_end(msg, nested);
2303                 }
2304
2305                 if (rdev->wiphy.n_vendor_events) {
2306                         const struct nl80211_vendor_cmd_info *info;
2307                         struct nlattr *nested;
2308
2309                         nested = nla_nest_start_noflag(msg,
2310                                                        NL80211_ATTR_VENDOR_EVENTS);
2311                         if (!nested)
2312                                 goto nla_put_failure;
2313
2314                         for (i = 0; i < rdev->wiphy.n_vendor_events; i++) {
2315                                 info = &rdev->wiphy.vendor_events[i];
2316                                 if (nla_put(msg, i + 1, sizeof(*info), info))
2317                                         goto nla_put_failure;
2318                         }
2319                         nla_nest_end(msg, nested);
2320                 }
2321                 state->split_start++;
2322                 break;
2323         case 12:
2324                 if (rdev->wiphy.flags & WIPHY_FLAG_HAS_CHANNEL_SWITCH &&
2325                     nla_put_u8(msg, NL80211_ATTR_MAX_CSA_COUNTERS,
2326                                rdev->wiphy.max_num_csa_counters))
2327                         goto nla_put_failure;
2328
2329                 if (rdev->wiphy.regulatory_flags & REGULATORY_WIPHY_SELF_MANAGED &&
2330                     nla_put_flag(msg, NL80211_ATTR_WIPHY_SELF_MANAGED_REG))
2331                         goto nla_put_failure;
2332
2333                 if (rdev->wiphy.max_sched_scan_reqs &&
2334                     nla_put_u32(msg, NL80211_ATTR_SCHED_SCAN_MAX_REQS,
2335                                 rdev->wiphy.max_sched_scan_reqs))
2336                         goto nla_put_failure;
2337
2338                 if (nla_put(msg, NL80211_ATTR_EXT_FEATURES,
2339                             sizeof(rdev->wiphy.ext_features),
2340                             rdev->wiphy.ext_features))
2341                         goto nla_put_failure;
2342
2343                 if (rdev->wiphy.bss_select_support) {
2344                         struct nlattr *nested;
2345                         u32 bss_select_support = rdev->wiphy.bss_select_support;
2346
2347                         nested = nla_nest_start_noflag(msg,
2348                                                        NL80211_ATTR_BSS_SELECT);
2349                         if (!nested)
2350                                 goto nla_put_failure;
2351
2352                         i = 0;
2353                         while (bss_select_support) {
2354                                 if ((bss_select_support & 1) &&
2355                                     nla_put_flag(msg, i))
2356                                         goto nla_put_failure;
2357                                 i++;
2358                                 bss_select_support >>= 1;
2359                         }
2360                         nla_nest_end(msg, nested);
2361                 }
2362
2363                 state->split_start++;
2364                 break;
2365         case 13:
2366                 if (rdev->wiphy.num_iftype_ext_capab &&
2367                     rdev->wiphy.iftype_ext_capab) {
2368                         struct nlattr *nested_ext_capab, *nested;
2369
2370                         nested = nla_nest_start_noflag(msg,
2371                                                        NL80211_ATTR_IFTYPE_EXT_CAPA);
2372                         if (!nested)
2373                                 goto nla_put_failure;
2374
2375                         for (i = state->capa_start;
2376                              i < rdev->wiphy.num_iftype_ext_capab; i++) {
2377                                 const struct wiphy_iftype_ext_capab *capab;
2378
2379                                 capab = &rdev->wiphy.iftype_ext_capab[i];
2380
2381                                 nested_ext_capab = nla_nest_start_noflag(msg,
2382                                                                          i);
2383                                 if (!nested_ext_capab ||
2384                                     nla_put_u32(msg, NL80211_ATTR_IFTYPE,
2385                                                 capab->iftype) ||
2386                                     nla_put(msg, NL80211_ATTR_EXT_CAPA,
2387                                             capab->extended_capabilities_len,
2388                                             capab->extended_capabilities) ||
2389                                     nla_put(msg, NL80211_ATTR_EXT_CAPA_MASK,
2390                                             capab->extended_capabilities_len,
2391                                             capab->extended_capabilities_mask))
2392                                         goto nla_put_failure;
2393
2394                                 nla_nest_end(msg, nested_ext_capab);
2395                                 if (state->split)
2396                                         break;
2397                         }
2398                         nla_nest_end(msg, nested);
2399                         if (i < rdev->wiphy.num_iftype_ext_capab) {
2400                                 state->capa_start = i + 1;
2401                                 break;
2402                         }
2403                 }
2404
2405                 if (nla_put_u32(msg, NL80211_ATTR_BANDS,
2406                                 rdev->wiphy.nan_supported_bands))
2407                         goto nla_put_failure;
2408
2409                 if (wiphy_ext_feature_isset(&rdev->wiphy,
2410                                             NL80211_EXT_FEATURE_TXQS)) {
2411                         struct cfg80211_txq_stats txqstats = {};
2412                         int res;
2413
2414                         res = rdev_get_txq_stats(rdev, NULL, &txqstats);
2415                         if (!res &&
2416                             !nl80211_put_txq_stats(msg, &txqstats,
2417                                                    NL80211_ATTR_TXQ_STATS))
2418                                 goto nla_put_failure;
2419
2420                         if (nla_put_u32(msg, NL80211_ATTR_TXQ_LIMIT,
2421                                         rdev->wiphy.txq_limit))
2422                                 goto nla_put_failure;
2423                         if (nla_put_u32(msg, NL80211_ATTR_TXQ_MEMORY_LIMIT,
2424                                         rdev->wiphy.txq_memory_limit))
2425                                 goto nla_put_failure;
2426                         if (nla_put_u32(msg, NL80211_ATTR_TXQ_QUANTUM,
2427                                         rdev->wiphy.txq_quantum))
2428                                 goto nla_put_failure;
2429                 }
2430
2431                 state->split_start++;
2432                 break;
2433         case 14:
2434                 if (nl80211_send_pmsr_capa(rdev, msg))
2435                         goto nla_put_failure;
2436
2437                 state->split_start++;
2438                 break;
2439         case 15:
2440                 if (rdev->wiphy.akm_suites &&
2441                     nla_put(msg, NL80211_ATTR_AKM_SUITES,
2442                             sizeof(u32) * rdev->wiphy.n_akm_suites,
2443                             rdev->wiphy.akm_suites))
2444                         goto nla_put_failure;
2445
2446                 /* done */
2447                 state->split_start = 0;
2448                 break;
2449         }
2450  finish:
2451         genlmsg_end(msg, hdr);
2452         return 0;
2453
2454  nla_put_failure:
2455         genlmsg_cancel(msg, hdr);
2456         return -EMSGSIZE;
2457 }
2458
2459 static int nl80211_dump_wiphy_parse(struct sk_buff *skb,
2460                                     struct netlink_callback *cb,
2461                                     struct nl80211_dump_wiphy_state *state)
2462 {
2463         struct nlattr **tb = kcalloc(NUM_NL80211_ATTR, sizeof(*tb), GFP_KERNEL);
2464         int ret;
2465
2466         if (!tb)
2467                 return -ENOMEM;
2468
2469         ret = nlmsg_parse_deprecated(cb->nlh,
2470                                      GENL_HDRLEN + nl80211_fam.hdrsize,
2471                                      tb, nl80211_fam.maxattr,
2472                                      nl80211_policy, NULL);
2473         /* ignore parse errors for backward compatibility */
2474         if (ret) {
2475                 ret = 0;
2476                 goto out;
2477         }
2478
2479         state->split = tb[NL80211_ATTR_SPLIT_WIPHY_DUMP];
2480         if (tb[NL80211_ATTR_WIPHY])
2481                 state->filter_wiphy = nla_get_u32(tb[NL80211_ATTR_WIPHY]);
2482         if (tb[NL80211_ATTR_WDEV])
2483                 state->filter_wiphy = nla_get_u64(tb[NL80211_ATTR_WDEV]) >> 32;
2484         if (tb[NL80211_ATTR_IFINDEX]) {
2485                 struct net_device *netdev;
2486                 struct cfg80211_registered_device *rdev;
2487                 int ifidx = nla_get_u32(tb[NL80211_ATTR_IFINDEX]);
2488
2489                 netdev = __dev_get_by_index(sock_net(skb->sk), ifidx);
2490                 if (!netdev) {
2491                         ret = -ENODEV;
2492                         goto out;
2493                 }
2494                 if (netdev->ieee80211_ptr) {
2495                         rdev = wiphy_to_rdev(
2496                                 netdev->ieee80211_ptr->wiphy);
2497                         state->filter_wiphy = rdev->wiphy_idx;
2498                 }
2499         }
2500
2501         ret = 0;
2502 out:
2503         kfree(tb);
2504         return ret;
2505 }
2506
2507 static int nl80211_dump_wiphy(struct sk_buff *skb, struct netlink_callback *cb)
2508 {
2509         int idx = 0, ret;
2510         struct nl80211_dump_wiphy_state *state = (void *)cb->args[0];
2511         struct cfg80211_registered_device *rdev;
2512
2513         rtnl_lock();
2514         if (!state) {
2515                 state = kzalloc(sizeof(*state), GFP_KERNEL);
2516                 if (!state) {
2517                         rtnl_unlock();
2518                         return -ENOMEM;
2519                 }
2520                 state->filter_wiphy = -1;
2521                 ret = nl80211_dump_wiphy_parse(skb, cb, state);
2522                 if (ret) {
2523                         kfree(state);
2524                         rtnl_unlock();
2525                         return ret;
2526                 }
2527                 cb->args[0] = (long)state;
2528         }
2529
2530         list_for_each_entry(rdev, &cfg80211_rdev_list, list) {
2531                 if (!net_eq(wiphy_net(&rdev->wiphy), sock_net(skb->sk)))
2532                         continue;
2533                 if (++idx <= state->start)
2534                         continue;
2535                 if (state->filter_wiphy != -1 &&
2536                     state->filter_wiphy != rdev->wiphy_idx)
2537                         continue;
2538                 /* attempt to fit multiple wiphy data chunks into the skb */
2539                 do {
2540                         ret = nl80211_send_wiphy(rdev, NL80211_CMD_NEW_WIPHY,
2541                                                  skb,
2542                                                  NETLINK_CB(cb->skb).portid,
2543                                                  cb->nlh->nlmsg_seq,
2544                                                  NLM_F_MULTI, state);
2545                         if (ret < 0) {
2546                                 /*
2547                                  * If sending the wiphy data didn't fit (ENOBUFS
2548                                  * or EMSGSIZE returned), this SKB is still
2549                                  * empty (so it's not too big because another
2550                                  * wiphy dataset is already in the skb) and
2551                                  * we've not tried to adjust the dump allocation
2552                                  * yet ... then adjust the alloc size to be
2553                                  * bigger, and return 1 but with the empty skb.
2554                                  * This results in an empty message being RX'ed
2555                                  * in userspace, but that is ignored.
2556                                  *
2557                                  * We can then retry with the larger buffer.
2558                                  */
2559                                 if ((ret == -ENOBUFS || ret == -EMSGSIZE) &&
2560                                     !skb->len && !state->split &&
2561                                     cb->min_dump_alloc < 4096) {
2562                                         cb->min_dump_alloc = 4096;
2563                                         state->split_start = 0;
2564                                         rtnl_unlock();
2565                                         return 1;
2566                                 }
2567                                 idx--;
2568                                 break;
2569                         }
2570                 } while (state->split_start > 0);
2571                 break;
2572         }
2573         rtnl_unlock();
2574
2575         state->start = idx;
2576
2577         return skb->len;
2578 }
2579
2580 static int nl80211_dump_wiphy_done(struct netlink_callback *cb)
2581 {
2582         kfree((void *)cb->args[0]);
2583         return 0;
2584 }
2585
2586 static int nl80211_get_wiphy(struct sk_buff *skb, struct genl_info *info)
2587 {
2588         struct sk_buff *msg;
2589         struct cfg80211_registered_device *rdev = info->user_ptr[0];
2590         struct nl80211_dump_wiphy_state state = {};
2591
2592         msg = nlmsg_new(4096, GFP_KERNEL);
2593         if (!msg)
2594                 return -ENOMEM;
2595
2596         if (nl80211_send_wiphy(rdev, NL80211_CMD_NEW_WIPHY, msg,
2597                                info->snd_portid, info->snd_seq, 0,
2598                                &state) < 0) {
2599                 nlmsg_free(msg);
2600                 return -ENOBUFS;
2601         }
2602
2603         return genlmsg_reply(msg, info);
2604 }
2605
2606 static const struct nla_policy txq_params_policy[NL80211_TXQ_ATTR_MAX + 1] = {
2607         [NL80211_TXQ_ATTR_QUEUE]                = { .type = NLA_U8 },
2608         [NL80211_TXQ_ATTR_TXOP]                 = { .type = NLA_U16 },
2609         [NL80211_TXQ_ATTR_CWMIN]                = { .type = NLA_U16 },
2610         [NL80211_TXQ_ATTR_CWMAX]                = { .type = NLA_U16 },
2611         [NL80211_TXQ_ATTR_AIFS]                 = { .type = NLA_U8 },
2612 };
2613
2614 static int parse_txq_params(struct nlattr *tb[],
2615                             struct ieee80211_txq_params *txq_params)
2616 {
2617         u8 ac;
2618
2619         if (!tb[NL80211_TXQ_ATTR_AC] || !tb[NL80211_TXQ_ATTR_TXOP] ||
2620             !tb[NL80211_TXQ_ATTR_CWMIN] || !tb[NL80211_TXQ_ATTR_CWMAX] ||
2621             !tb[NL80211_TXQ_ATTR_AIFS])
2622                 return -EINVAL;
2623
2624         ac = nla_get_u8(tb[NL80211_TXQ_ATTR_AC]);
2625         txq_params->txop = nla_get_u16(tb[NL80211_TXQ_ATTR_TXOP]);
2626         txq_params->cwmin = nla_get_u16(tb[NL80211_TXQ_ATTR_CWMIN]);
2627         txq_params->cwmax = nla_get_u16(tb[NL80211_TXQ_ATTR_CWMAX]);
2628         txq_params->aifs = nla_get_u8(tb[NL80211_TXQ_ATTR_AIFS]);
2629
2630         if (ac >= NL80211_NUM_ACS)
2631                 return -EINVAL;
2632         txq_params->ac = array_index_nospec(ac, NL80211_NUM_ACS);
2633         return 0;
2634 }
2635
2636 static bool nl80211_can_set_dev_channel(struct wireless_dev *wdev)
2637 {
2638         /*
2639          * You can only set the channel explicitly for WDS interfaces,
2640          * all others have their channel managed via their respective
2641          * "establish a connection" command (connect, join, ...)
2642          *
2643          * For AP/GO and mesh mode, the channel can be set with the
2644          * channel userspace API, but is only stored and passed to the
2645          * low-level driver when the AP starts or the mesh is joined.
2646          * This is for backward compatibility, userspace can also give
2647          * the channel in the start-ap or join-mesh commands instead.
2648          *
2649          * Monitors are special as they are normally slaved to
2650          * whatever else is going on, so they have their own special
2651          * operation to set the monitor channel if possible.
2652          */
2653         return !wdev ||
2654                 wdev->iftype == NL80211_IFTYPE_AP ||
2655                 wdev->iftype == NL80211_IFTYPE_MESH_POINT ||
2656                 wdev->iftype == NL80211_IFTYPE_MONITOR ||
2657                 wdev->iftype == NL80211_IFTYPE_P2P_GO;
2658 }
2659
2660 int nl80211_parse_chandef(struct cfg80211_registered_device *rdev,
2661                           struct genl_info *info,
2662                           struct cfg80211_chan_def *chandef)
2663 {
2664         struct netlink_ext_ack *extack = info->extack;
2665         struct nlattr **attrs = info->attrs;
2666         u32 control_freq;
2667
2668         if (!attrs[NL80211_ATTR_WIPHY_FREQ])
2669                 return -EINVAL;
2670
2671         control_freq = nla_get_u32(attrs[NL80211_ATTR_WIPHY_FREQ]);
2672
2673         memset(chandef, 0, sizeof(*chandef));
2674
2675         chandef->chan = ieee80211_get_channel(&rdev->wiphy, control_freq);
2676         chandef->width = NL80211_CHAN_WIDTH_20_NOHT;
2677         chandef->center_freq1 = control_freq;
2678         chandef->center_freq2 = 0;
2679
2680         /* Primary channel not allowed */
2681         if (!chandef->chan || chandef->chan->flags & IEEE80211_CHAN_DISABLED) {
2682                 NL_SET_ERR_MSG_ATTR(extack, attrs[NL80211_ATTR_WIPHY_FREQ],
2683                                     "Channel is disabled");
2684                 return -EINVAL;
2685         }
2686
2687         if (attrs[NL80211_ATTR_WIPHY_CHANNEL_TYPE]) {
2688                 enum nl80211_channel_type chantype;
2689
2690                 chantype = nla_get_u32(attrs[NL80211_ATTR_WIPHY_CHANNEL_TYPE]);
2691
2692                 switch (chantype) {
2693                 case NL80211_CHAN_NO_HT:
2694                 case NL80211_CHAN_HT20:
2695                 case NL80211_CHAN_HT40PLUS:
2696                 case NL80211_CHAN_HT40MINUS:
2697                         cfg80211_chandef_create(chandef, chandef->chan,
2698                                                 chantype);
2699                         /* user input for center_freq is incorrect */
2700                         if (attrs[NL80211_ATTR_CENTER_FREQ1] &&
2701                             chandef->center_freq1 != nla_get_u32(attrs[NL80211_ATTR_CENTER_FREQ1])) {
2702                                 NL_SET_ERR_MSG_ATTR(extack,
2703                                                     attrs[NL80211_ATTR_CENTER_FREQ1],
2704                                                     "bad center frequency 1");
2705                                 return -EINVAL;
2706                         }
2707                         /* center_freq2 must be zero */
2708                         if (attrs[NL80211_ATTR_CENTER_FREQ2] &&
2709                             nla_get_u32(attrs[NL80211_ATTR_CENTER_FREQ2])) {
2710                                 NL_SET_ERR_MSG_ATTR(extack,
2711                                                     attrs[NL80211_ATTR_CENTER_FREQ2],
2712                                                     "center frequency 2 can't be used");
2713                                 return -EINVAL;
2714                         }
2715                         break;
2716                 default:
2717                         NL_SET_ERR_MSG_ATTR(extack,
2718                                             attrs[NL80211_ATTR_WIPHY_CHANNEL_TYPE],
2719                                             "invalid channel type");
2720                         return -EINVAL;
2721                 }
2722         } else if (attrs[NL80211_ATTR_CHANNEL_WIDTH]) {
2723                 chandef->width =
2724                         nla_get_u32(attrs[NL80211_ATTR_CHANNEL_WIDTH]);
2725                 if (attrs[NL80211_ATTR_CENTER_FREQ1])
2726                         chandef->center_freq1 =
2727                                 nla_get_u32(attrs[NL80211_ATTR_CENTER_FREQ1]);
2728                 if (attrs[NL80211_ATTR_CENTER_FREQ2])
2729                         chandef->center_freq2 =
2730                                 nla_get_u32(attrs[NL80211_ATTR_CENTER_FREQ2]);
2731         }
2732
2733         if (info->attrs[NL80211_ATTR_WIPHY_EDMG_CHANNELS]) {
2734                 chandef->edmg.channels =
2735                       nla_get_u8(info->attrs[NL80211_ATTR_WIPHY_EDMG_CHANNELS]);
2736
2737                 if (info->attrs[NL80211_ATTR_WIPHY_EDMG_BW_CONFIG])
2738                         chandef->edmg.bw_config =
2739                      nla_get_u8(info->attrs[NL80211_ATTR_WIPHY_EDMG_BW_CONFIG]);
2740         } else {
2741                 chandef->edmg.bw_config = 0;
2742                 chandef->edmg.channels = 0;
2743         }
2744
2745         if (!cfg80211_chandef_valid(chandef)) {
2746                 NL_SET_ERR_MSG(extack, "invalid channel definition");
2747                 return -EINVAL;
2748         }
2749
2750         if (!cfg80211_chandef_usable(&rdev->wiphy, chandef,
2751                                      IEEE80211_CHAN_DISABLED)) {
2752                 NL_SET_ERR_MSG(extack, "(extension) channel is disabled");
2753                 return -EINVAL;
2754         }
2755
2756         if ((chandef->width == NL80211_CHAN_WIDTH_5 ||
2757              chandef->width == NL80211_CHAN_WIDTH_10) &&
2758             !(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_5_10_MHZ)) {
2759                 NL_SET_ERR_MSG(extack, "5/10 MHz not supported");
2760                 return -EINVAL;
2761         }
2762
2763         return 0;
2764 }
2765
2766 static int __nl80211_set_channel(struct cfg80211_registered_device *rdev,
2767                                  struct net_device *dev,
2768                                  struct genl_info *info)
2769 {
2770         struct cfg80211_chan_def chandef;
2771         int result;
2772         enum nl80211_iftype iftype = NL80211_IFTYPE_MONITOR;
2773         struct wireless_dev *wdev = NULL;
2774
2775         if (dev)
2776                 wdev = dev->ieee80211_ptr;
2777         if (!nl80211_can_set_dev_channel(wdev))
2778                 return -EOPNOTSUPP;
2779         if (wdev)
2780                 iftype = wdev->iftype;
2781
2782         result = nl80211_parse_chandef(rdev, info, &chandef);
2783         if (result)
2784                 return result;
2785
2786         switch (iftype) {
2787         case NL80211_IFTYPE_AP:
2788         case NL80211_IFTYPE_P2P_GO:
2789                 if (!cfg80211_reg_can_beacon_relax(&rdev->wiphy, &chandef,
2790                                                    iftype)) {
2791                         result = -EINVAL;
2792                         break;
2793                 }
2794                 if (wdev->beacon_interval) {
2795                         if (!dev || !rdev->ops->set_ap_chanwidth ||
2796                             !(rdev->wiphy.features &
2797                               NL80211_FEATURE_AP_MODE_CHAN_WIDTH_CHANGE)) {
2798                                 result = -EBUSY;
2799                                 break;
2800                         }
2801
2802                         /* Only allow dynamic channel width changes */
2803                         if (chandef.chan != wdev->preset_chandef.chan) {
2804                                 result = -EBUSY;
2805                                 break;
2806                         }
2807                         result = rdev_set_ap_chanwidth(rdev, dev, &chandef);
2808                         if (result)
2809                                 break;
2810                 }
2811                 wdev->preset_chandef = chandef;
2812                 result = 0;
2813                 break;
2814         case NL80211_IFTYPE_MESH_POINT:
2815                 result = cfg80211_set_mesh_channel(rdev, wdev, &chandef);
2816                 break;
2817         case NL80211_IFTYPE_MONITOR:
2818                 result = cfg80211_set_monitor_channel(rdev, &chandef);
2819                 break;
2820         default:
2821                 result = -EINVAL;
2822         }
2823
2824         return result;
2825 }
2826
2827 static int nl80211_set_channel(struct sk_buff *skb, struct genl_info *info)
2828 {
2829         struct cfg80211_registered_device *rdev = info->user_ptr[0];
2830         struct net_device *netdev = info->user_ptr[1];
2831
2832         return __nl80211_set_channel(rdev, netdev, info);
2833 }
2834
2835 static int nl80211_set_wds_peer(struct sk_buff *skb, struct genl_info *info)
2836 {
2837         struct cfg80211_registered_device *rdev = info->user_ptr[0];
2838         struct net_device *dev = info->user_ptr[1];
2839         struct wireless_dev *wdev = dev->ieee80211_ptr;
2840         const u8 *bssid;
2841
2842         if (!info->attrs[NL80211_ATTR_MAC])
2843                 return -EINVAL;
2844
2845         if (netif_running(dev))
2846                 return -EBUSY;
2847
2848         if (!rdev->ops->set_wds_peer)
2849                 return -EOPNOTSUPP;
2850
2851         if (wdev->iftype != NL80211_IFTYPE_WDS)
2852                 return -EOPNOTSUPP;
2853
2854         bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
2855         return rdev_set_wds_peer(rdev, dev, bssid);
2856 }
2857
2858 static int nl80211_set_wiphy(struct sk_buff *skb, struct genl_info *info)
2859 {
2860         struct cfg80211_registered_device *rdev;
2861         struct net_device *netdev = NULL;
2862         struct wireless_dev *wdev;
2863         int result = 0, rem_txq_params = 0;
2864         struct nlattr *nl_txq_params;
2865         u32 changed;
2866         u8 retry_short = 0, retry_long = 0;
2867         u32 frag_threshold = 0, rts_threshold = 0;
2868         u8 coverage_class = 0;
2869         u32 txq_limit = 0, txq_memory_limit = 0, txq_quantum = 0;
2870
2871         ASSERT_RTNL();
2872
2873         /*
2874          * Try to find the wiphy and netdev. Normally this
2875          * function shouldn't need the netdev, but this is
2876          * done for backward compatibility -- previously
2877          * setting the channel was done per wiphy, but now
2878          * it is per netdev. Previous userland like hostapd
2879          * also passed a netdev to set_wiphy, so that it is
2880          * possible to let that go to the right netdev!
2881          */
2882
2883         if (info->attrs[NL80211_ATTR_IFINDEX]) {
2884                 int ifindex = nla_get_u32(info->attrs[NL80211_ATTR_IFINDEX]);
2885
2886                 netdev = __dev_get_by_index(genl_info_net(info), ifindex);
2887                 if (netdev && netdev->ieee80211_ptr)
2888                         rdev = wiphy_to_rdev(netdev->ieee80211_ptr->wiphy);
2889                 else
2890                         netdev = NULL;
2891         }
2892
2893         if (!netdev) {
2894                 rdev = __cfg80211_rdev_from_attrs(genl_info_net(info),
2895                                                   info->attrs);
2896                 if (IS_ERR(rdev))
2897                         return PTR_ERR(rdev);
2898                 wdev = NULL;
2899                 netdev = NULL;
2900                 result = 0;
2901         } else
2902                 wdev = netdev->ieee80211_ptr;
2903
2904         /*
2905          * end workaround code, by now the rdev is available
2906          * and locked, and wdev may or may not be NULL.
2907          */
2908
2909         if (info->attrs[NL80211_ATTR_WIPHY_NAME])
2910                 result = cfg80211_dev_rename(
2911                         rdev, nla_data(info->attrs[NL80211_ATTR_WIPHY_NAME]));
2912
2913         if (result)
2914                 return result;
2915
2916         if (info->attrs[NL80211_ATTR_WIPHY_TXQ_PARAMS]) {
2917                 struct ieee80211_txq_params txq_params;
2918                 struct nlattr *tb[NL80211_TXQ_ATTR_MAX + 1];
2919
2920                 if (!rdev->ops->set_txq_params)
2921                         return -EOPNOTSUPP;
2922
2923                 if (!netdev)
2924                         return -EINVAL;
2925
2926                 if (netdev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
2927                     netdev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
2928                         return -EINVAL;
2929
2930                 if (!netif_running(netdev))
2931                         return -ENETDOWN;
2932
2933                 nla_for_each_nested(nl_txq_params,
2934                                     info->attrs[NL80211_ATTR_WIPHY_TXQ_PARAMS],
2935                                     rem_txq_params) {
2936                         result = nla_parse_nested_deprecated(tb,
2937                                                              NL80211_TXQ_ATTR_MAX,
2938                                                              nl_txq_params,
2939                                                              txq_params_policy,
2940                                                              info->extack);
2941                         if (result)
2942                                 return result;
2943                         result = parse_txq_params(tb, &txq_params);
2944                         if (result)
2945                                 return result;
2946
2947                         result = rdev_set_txq_params(rdev, netdev,
2948                                                      &txq_params);
2949                         if (result)
2950                                 return result;
2951                 }
2952         }
2953
2954         if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
2955                 result = __nl80211_set_channel(
2956                         rdev,
2957                         nl80211_can_set_dev_channel(wdev) ? netdev : NULL,
2958                         info);
2959                 if (result)
2960                         return result;
2961         }
2962
2963         if (info->attrs[NL80211_ATTR_WIPHY_TX_POWER_SETTING]) {
2964                 struct wireless_dev *txp_wdev = wdev;
2965                 enum nl80211_tx_power_setting type;
2966                 int idx, mbm = 0;
2967
2968                 if (!(rdev->wiphy.features & NL80211_FEATURE_VIF_TXPOWER))
2969                         txp_wdev = NULL;
2970
2971                 if (!rdev->ops->set_tx_power)
2972                         return -EOPNOTSUPP;
2973
2974                 idx = NL80211_ATTR_WIPHY_TX_POWER_SETTING;
2975                 type = nla_get_u32(info->attrs[idx]);
2976
2977                 if (!info->attrs[NL80211_ATTR_WIPHY_TX_POWER_LEVEL] &&
2978                     (type != NL80211_TX_POWER_AUTOMATIC))
2979                         return -EINVAL;
2980
2981                 if (type != NL80211_TX_POWER_AUTOMATIC) {
2982                         idx = NL80211_ATTR_WIPHY_TX_POWER_LEVEL;
2983                         mbm = nla_get_u32(info->attrs[idx]);
2984                 }
2985
2986                 result = rdev_set_tx_power(rdev, txp_wdev, type, mbm);
2987                 if (result)
2988                         return result;
2989         }
2990
2991         if (info->attrs[NL80211_ATTR_WIPHY_ANTENNA_TX] &&
2992             info->attrs[NL80211_ATTR_WIPHY_ANTENNA_RX]) {
2993                 u32 tx_ant, rx_ant;
2994
2995                 if ((!rdev->wiphy.available_antennas_tx &&
2996                      !rdev->wiphy.available_antennas_rx) ||
2997                     !rdev->ops->set_antenna)
2998                         return -EOPNOTSUPP;
2999
3000                 tx_ant = nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_ANTENNA_TX]);
3001                 rx_ant = nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_ANTENNA_RX]);
3002
3003                 /* reject antenna configurations which don't match the
3004                  * available antenna masks, except for the "all" mask */
3005                 if ((~tx_ant && (tx_ant & ~rdev->wiphy.available_antennas_tx)) ||
3006                     (~rx_ant && (rx_ant & ~rdev->wiphy.available_antennas_rx)))
3007                         return -EINVAL;
3008
3009                 tx_ant = tx_ant & rdev->wiphy.available_antennas_tx;
3010                 rx_ant = rx_ant & rdev->wiphy.available_antennas_rx;
3011
3012                 result = rdev_set_antenna(rdev, tx_ant, rx_ant);
3013                 if (result)
3014                         return result;
3015         }
3016
3017         changed = 0;
3018
3019         if (info->attrs[NL80211_ATTR_WIPHY_RETRY_SHORT]) {
3020                 retry_short = nla_get_u8(
3021                         info->attrs[NL80211_ATTR_WIPHY_RETRY_SHORT]);
3022
3023                 changed |= WIPHY_PARAM_RETRY_SHORT;
3024         }
3025
3026         if (info->attrs[NL80211_ATTR_WIPHY_RETRY_LONG]) {
3027                 retry_long = nla_get_u8(
3028                         info->attrs[NL80211_ATTR_WIPHY_RETRY_LONG]);
3029
3030                 changed |= WIPHY_PARAM_RETRY_LONG;
3031         }
3032
3033         if (info->attrs[NL80211_ATTR_WIPHY_FRAG_THRESHOLD]) {
3034                 frag_threshold = nla_get_u32(
3035                         info->attrs[NL80211_ATTR_WIPHY_FRAG_THRESHOLD]);
3036                 if (frag_threshold < 256)
3037                         return -EINVAL;
3038
3039                 if (frag_threshold != (u32) -1) {
3040                         /*
3041                          * Fragments (apart from the last one) are required to
3042                          * have even length. Make the fragmentation code
3043                          * simpler by stripping LSB should someone try to use
3044                          * odd threshold value.
3045                          */
3046                         frag_threshold &= ~0x1;
3047                 }
3048                 changed |= WIPHY_PARAM_FRAG_THRESHOLD;
3049         }
3050
3051         if (info->attrs[NL80211_ATTR_WIPHY_RTS_THRESHOLD]) {
3052                 rts_threshold = nla_get_u32(
3053                         info->attrs[NL80211_ATTR_WIPHY_RTS_THRESHOLD]);
3054                 changed |= WIPHY_PARAM_RTS_THRESHOLD;
3055         }
3056
3057         if (info->attrs[NL80211_ATTR_WIPHY_COVERAGE_CLASS]) {
3058                 if (info->attrs[NL80211_ATTR_WIPHY_DYN_ACK])
3059                         return -EINVAL;
3060
3061                 coverage_class = nla_get_u8(
3062                         info->attrs[NL80211_ATTR_WIPHY_COVERAGE_CLASS]);
3063                 changed |= WIPHY_PARAM_COVERAGE_CLASS;
3064         }
3065
3066         if (info->attrs[NL80211_ATTR_WIPHY_DYN_ACK]) {
3067                 if (!(rdev->wiphy.features & NL80211_FEATURE_ACKTO_ESTIMATION))
3068                         return -EOPNOTSUPP;
3069
3070                 changed |= WIPHY_PARAM_DYN_ACK;
3071         }
3072
3073         if (info->attrs[NL80211_ATTR_TXQ_LIMIT]) {
3074                 if (!wiphy_ext_feature_isset(&rdev->wiphy,
3075                                              NL80211_EXT_FEATURE_TXQS))
3076                         return -EOPNOTSUPP;
3077                 txq_limit = nla_get_u32(
3078                         info->attrs[NL80211_ATTR_TXQ_LIMIT]);
3079                 changed |= WIPHY_PARAM_TXQ_LIMIT;
3080         }
3081
3082         if (info->attrs[NL80211_ATTR_TXQ_MEMORY_LIMIT]) {
3083                 if (!wiphy_ext_feature_isset(&rdev->wiphy,
3084                                              NL80211_EXT_FEATURE_TXQS))
3085                         return -EOPNOTSUPP;
3086                 txq_memory_limit = nla_get_u32(
3087                         info->attrs[NL80211_ATTR_TXQ_MEMORY_LIMIT]);
3088                 changed |= WIPHY_PARAM_TXQ_MEMORY_LIMIT;
3089         }
3090
3091         if (info->attrs[NL80211_ATTR_TXQ_QUANTUM]) {
3092                 if (!wiphy_ext_feature_isset(&rdev->wiphy,
3093                                              NL80211_EXT_FEATURE_TXQS))
3094                         return -EOPNOTSUPP;
3095                 txq_quantum = nla_get_u32(
3096                         info->attrs[NL80211_ATTR_TXQ_QUANTUM]);
3097                 changed |= WIPHY_PARAM_TXQ_QUANTUM;
3098         }
3099
3100         if (changed) {
3101                 u8 old_retry_short, old_retry_long;
3102                 u32 old_frag_threshold, old_rts_threshold;
3103                 u8 old_coverage_class;
3104                 u32 old_txq_limit, old_txq_memory_limit, old_txq_quantum;
3105
3106                 if (!rdev->ops->set_wiphy_params)
3107                         return -EOPNOTSUPP;
3108
3109                 old_retry_short = rdev->wiphy.retry_short;
3110                 old_retry_long = rdev->wiphy.retry_long;
3111                 old_frag_threshold = rdev->wiphy.frag_threshold;
3112                 old_rts_threshold = rdev->wiphy.rts_threshold;
3113                 old_coverage_class = rdev->wiphy.coverage_class;
3114                 old_txq_limit = rdev->wiphy.txq_limit;
3115                 old_txq_memory_limit = rdev->wiphy.txq_memory_limit;
3116                 old_txq_quantum = rdev->wiphy.txq_quantum;
3117
3118                 if (changed & WIPHY_PARAM_RETRY_SHORT)
3119                         rdev->wiphy.retry_short = retry_short;
3120                 if (changed & WIPHY_PARAM_RETRY_LONG)
3121                         rdev->wiphy.retry_long = retry_long;
3122                 if (changed & WIPHY_PARAM_FRAG_THRESHOLD)
3123                         rdev->wiphy.frag_threshold = frag_threshold;
3124                 if (changed & WIPHY_PARAM_RTS_THRESHOLD)
3125                         rdev->wiphy.rts_threshold = rts_threshold;
3126                 if (changed & WIPHY_PARAM_COVERAGE_CLASS)
3127                         rdev->wiphy.coverage_class = coverage_class;
3128                 if (changed & WIPHY_PARAM_TXQ_LIMIT)
3129                         rdev->wiphy.txq_limit = txq_limit;
3130                 if (changed & WIPHY_PARAM_TXQ_MEMORY_LIMIT)
3131                         rdev->wiphy.txq_memory_limit = txq_memory_limit;
3132                 if (changed & WIPHY_PARAM_TXQ_QUANTUM)
3133                         rdev->wiphy.txq_quantum = txq_quantum;
3134
3135                 result = rdev_set_wiphy_params(rdev, changed);
3136                 if (result) {
3137                         rdev->wiphy.retry_short = old_retry_short;
3138                         rdev->wiphy.retry_long = old_retry_long;
3139                         rdev->wiphy.frag_threshold = old_frag_threshold;
3140                         rdev->wiphy.rts_threshold = old_rts_threshold;
3141                         rdev->wiphy.coverage_class = old_coverage_class;
3142                         rdev->wiphy.txq_limit = old_txq_limit;
3143                         rdev->wiphy.txq_memory_limit = old_txq_memory_limit;
3144                         rdev->wiphy.txq_quantum = old_txq_quantum;
3145                         return result;
3146                 }
3147         }
3148         return 0;
3149 }
3150
3151 static int nl80211_send_chandef(struct sk_buff *msg,
3152                                 const struct cfg80211_chan_def *chandef)
3153 {
3154         if (WARN_ON(!cfg80211_chandef_valid(chandef)))
3155                 return -EINVAL;
3156
3157         if (nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ,
3158                         chandef->chan->center_freq))
3159                 return -ENOBUFS;
3160         switch (chandef->width) {
3161         case NL80211_CHAN_WIDTH_20_NOHT:
3162         case NL80211_CHAN_WIDTH_20:
3163         case NL80211_CHAN_WIDTH_40:
3164                 if (nla_put_u32(msg, NL80211_ATTR_WIPHY_CHANNEL_TYPE,
3165                                 cfg80211_get_chandef_type(chandef)))
3166                         return -ENOBUFS;
3167                 break;
3168         default:
3169                 break;
3170         }
3171         if (nla_put_u32(msg, NL80211_ATTR_CHANNEL_WIDTH, chandef->width))
3172                 return -ENOBUFS;
3173         if (nla_put_u32(msg, NL80211_ATTR_CENTER_FREQ1, chandef->center_freq1))
3174                 return -ENOBUFS;
3175         if (chandef->center_freq2 &&
3176             nla_put_u32(msg, NL80211_ATTR_CENTER_FREQ2, chandef->center_freq2))
3177                 return -ENOBUFS;
3178         return 0;
3179 }
3180
3181 static int nl80211_send_iface(struct sk_buff *msg, u32 portid, u32 seq, int flags,
3182                               struct cfg80211_registered_device *rdev,
3183                               struct wireless_dev *wdev,
3184                               enum nl80211_commands cmd)
3185 {
3186         struct net_device *dev = wdev->netdev;
3187         void *hdr;
3188
3189         WARN_ON(cmd != NL80211_CMD_NEW_INTERFACE &&
3190                 cmd != NL80211_CMD_DEL_INTERFACE &&
3191                 cmd != NL80211_CMD_SET_INTERFACE);
3192
3193         hdr = nl80211hdr_put(msg, portid, seq, flags, cmd);
3194         if (!hdr)
3195                 return -1;
3196
3197         if (dev &&
3198             (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
3199              nla_put_string(msg, NL80211_ATTR_IFNAME, dev->name)))
3200                 goto nla_put_failure;
3201
3202         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
3203             nla_put_u32(msg, NL80211_ATTR_IFTYPE, wdev->iftype) ||
3204             nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
3205                               NL80211_ATTR_PAD) ||
3206             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, wdev_address(wdev)) ||
3207             nla_put_u32(msg, NL80211_ATTR_GENERATION,
3208                         rdev->devlist_generation ^
3209                         (cfg80211_rdev_list_generation << 2)) ||
3210             nla_put_u8(msg, NL80211_ATTR_4ADDR, wdev->use_4addr))
3211                 goto nla_put_failure;
3212
3213         if (rdev->ops->get_channel) {
3214                 int ret;
3215                 struct cfg80211_chan_def chandef = {};
3216
3217                 ret = rdev_get_channel(rdev, wdev, &chandef);
3218                 if (ret == 0) {
3219                         if (nl80211_send_chandef(msg, &chandef))
3220                                 goto nla_put_failure;
3221                 }
3222         }
3223
3224         if (rdev->ops->get_tx_power) {
3225                 int dbm, ret;
3226
3227                 ret = rdev_get_tx_power(rdev, wdev, &dbm);
3228                 if (ret == 0 &&
3229                     nla_put_u32(msg, NL80211_ATTR_WIPHY_TX_POWER_LEVEL,
3230                                 DBM_TO_MBM(dbm)))
3231                         goto nla_put_failure;
3232         }
3233
3234         wdev_lock(wdev);
3235         switch (wdev->iftype) {
3236         case NL80211_IFTYPE_AP:
3237                 if (wdev->ssid_len &&
3238                     nla_put(msg, NL80211_ATTR_SSID, wdev->ssid_len, wdev->ssid))
3239                         goto nla_put_failure_locked;
3240                 break;
3241         case NL80211_IFTYPE_STATION:
3242         case NL80211_IFTYPE_P2P_CLIENT:
3243         case NL80211_IFTYPE_ADHOC: {
3244                 const u8 *ssid_ie;
3245                 if (!wdev->current_bss)
3246                         break;
3247                 rcu_read_lock();
3248                 ssid_ie = ieee80211_bss_get_ie(&wdev->current_bss->pub,
3249                                                WLAN_EID_SSID);
3250                 if (ssid_ie &&
3251                     nla_put(msg, NL80211_ATTR_SSID, ssid_ie[1], ssid_ie + 2))
3252                         goto nla_put_failure_rcu_locked;
3253                 rcu_read_unlock();
3254                 break;
3255                 }
3256         default:
3257                 /* nothing */
3258                 break;
3259         }
3260         wdev_unlock(wdev);
3261
3262         if (rdev->ops->get_txq_stats) {
3263                 struct cfg80211_txq_stats txqstats = {};
3264                 int ret = rdev_get_txq_stats(rdev, wdev, &txqstats);
3265
3266                 if (ret == 0 &&
3267                     !nl80211_put_txq_stats(msg, &txqstats,
3268                                            NL80211_ATTR_TXQ_STATS))
3269                         goto nla_put_failure;
3270         }
3271
3272         genlmsg_end(msg, hdr);
3273         return 0;
3274
3275  nla_put_failure_rcu_locked:
3276         rcu_read_unlock();
3277  nla_put_failure_locked:
3278         wdev_unlock(wdev);
3279  nla_put_failure:
3280         genlmsg_cancel(msg, hdr);
3281         return -EMSGSIZE;
3282 }
3283
3284 static int nl80211_dump_interface(struct sk_buff *skb, struct netlink_callback *cb)
3285 {
3286         int wp_idx = 0;
3287         int if_idx = 0;
3288         int wp_start = cb->args[0];
3289         int if_start = cb->args[1];
3290         int filter_wiphy = -1;
3291         struct cfg80211_registered_device *rdev;
3292         struct wireless_dev *wdev;
3293         int ret;
3294
3295         rtnl_lock();
3296         if (!cb->args[2]) {
3297                 struct nl80211_dump_wiphy_state state = {
3298                         .filter_wiphy = -1,
3299                 };
3300
3301                 ret = nl80211_dump_wiphy_parse(skb, cb, &state);
3302                 if (ret)
3303                         goto out_unlock;
3304
3305                 filter_wiphy = state.filter_wiphy;
3306
3307                 /*
3308                  * if filtering, set cb->args[2] to +1 since 0 is the default
3309                  * value needed to determine that parsing is necessary.
3310                  */
3311                 if (filter_wiphy >= 0)
3312                         cb->args[2] = filter_wiphy + 1;
3313                 else
3314                         cb->args[2] = -1;
3315         } else if (cb->args[2] > 0) {
3316                 filter_wiphy = cb->args[2] - 1;
3317         }
3318
3319         list_for_each_entry(rdev, &cfg80211_rdev_list, list) {
3320                 if (!net_eq(wiphy_net(&rdev->wiphy), sock_net(skb->sk)))
3321                         continue;
3322                 if (wp_idx < wp_start) {
3323                         wp_idx++;
3324                         continue;
3325                 }
3326
3327                 if (filter_wiphy >= 0 && filter_wiphy != rdev->wiphy_idx)
3328                         continue;
3329
3330                 if_idx = 0;
3331
3332                 list_for_each_entry(wdev, &rdev->wiphy.wdev_list, list) {
3333                         if (if_idx < if_start) {
3334                                 if_idx++;
3335                                 continue;
3336                         }
3337                         if (nl80211_send_iface(skb, NETLINK_CB(cb->skb).portid,
3338                                                cb->nlh->nlmsg_seq, NLM_F_MULTI,
3339                                                rdev, wdev,
3340                                                NL80211_CMD_NEW_INTERFACE) < 0) {
3341                                 goto out;
3342                         }
3343                         if_idx++;
3344                 }
3345
3346                 wp_idx++;
3347         }
3348  out:
3349         cb->args[0] = wp_idx;
3350         cb->args[1] = if_idx;
3351
3352         ret = skb->len;
3353  out_unlock:
3354         rtnl_unlock();
3355
3356         return ret;
3357 }
3358
3359 static int nl80211_get_interface(struct sk_buff *skb, struct genl_info *info)
3360 {
3361         struct sk_buff *msg;
3362         struct cfg80211_registered_device *rdev = info->user_ptr[0];
3363         struct wireless_dev *wdev = info->user_ptr[1];
3364
3365         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
3366         if (!msg)
3367                 return -ENOMEM;
3368
3369         if (nl80211_send_iface(msg, info->snd_portid, info->snd_seq, 0,
3370                                rdev, wdev, NL80211_CMD_NEW_INTERFACE) < 0) {
3371                 nlmsg_free(msg);
3372                 return -ENOBUFS;
3373         }
3374
3375         return genlmsg_reply(msg, info);
3376 }
3377
3378 static const struct nla_policy mntr_flags_policy[NL80211_MNTR_FLAG_MAX + 1] = {
3379         [NL80211_MNTR_FLAG_FCSFAIL] = { .type = NLA_FLAG },
3380         [NL80211_MNTR_FLAG_PLCPFAIL] = { .type = NLA_FLAG },
3381         [NL80211_MNTR_FLAG_CONTROL] = { .type = NLA_FLAG },
3382         [NL80211_MNTR_FLAG_OTHER_BSS] = { .type = NLA_FLAG },
3383         [NL80211_MNTR_FLAG_COOK_FRAMES] = { .type = NLA_FLAG },
3384         [NL80211_MNTR_FLAG_ACTIVE] = { .type = NLA_FLAG },
3385 };
3386
3387 static int parse_monitor_flags(struct nlattr *nla, u32 *mntrflags)
3388 {
3389         struct nlattr *flags[NL80211_MNTR_FLAG_MAX + 1];
3390         int flag;
3391
3392         *mntrflags = 0;
3393
3394         if (!nla)
3395                 return -EINVAL;
3396
3397         if (nla_parse_nested_deprecated(flags, NL80211_MNTR_FLAG_MAX, nla, mntr_flags_policy, NULL))
3398                 return -EINVAL;
3399
3400         for (flag = 1; flag <= NL80211_MNTR_FLAG_MAX; flag++)
3401                 if (flags[flag])
3402                         *mntrflags |= (1<<flag);
3403
3404         *mntrflags |= MONITOR_FLAG_CHANGED;
3405
3406         return 0;
3407 }
3408
3409 static int nl80211_parse_mon_options(struct cfg80211_registered_device *rdev,
3410                                      enum nl80211_iftype type,
3411                                      struct genl_info *info,
3412                                      struct vif_params *params)
3413 {
3414         bool change = false;
3415         int err;
3416
3417         if (info->attrs[NL80211_ATTR_MNTR_FLAGS]) {
3418                 if (type != NL80211_IFTYPE_MONITOR)
3419                         return -EINVAL;
3420
3421                 err = parse_monitor_flags(info->attrs[NL80211_ATTR_MNTR_FLAGS],
3422                                           &params->flags);
3423                 if (err)
3424                         return err;
3425
3426                 change = true;
3427         }
3428
3429         if (params->flags & MONITOR_FLAG_ACTIVE &&
3430             !(rdev->wiphy.features & NL80211_FEATURE_ACTIVE_MONITOR))
3431                 return -EOPNOTSUPP;
3432
3433         if (info->attrs[NL80211_ATTR_MU_MIMO_GROUP_DATA]) {
3434                 const u8 *mumimo_groups;
3435                 u32 cap_flag = NL80211_EXT_FEATURE_MU_MIMO_AIR_SNIFFER;
3436
3437                 if (type != NL80211_IFTYPE_MONITOR)
3438                         return -EINVAL;
3439
3440                 if (!wiphy_ext_feature_isset(&rdev->wiphy, cap_flag))
3441                         return -EOPNOTSUPP;
3442
3443                 mumimo_groups =
3444                         nla_data(info->attrs[NL80211_ATTR_MU_MIMO_GROUP_DATA]);
3445
3446                 /* bits 0 and 63 are reserved and must be zero */
3447                 if ((mumimo_groups[0] & BIT(0)) ||
3448                     (mumimo_groups[VHT_MUMIMO_GROUPS_DATA_LEN - 1] & BIT(7)))
3449                         return -EINVAL;
3450
3451                 params->vht_mumimo_groups = mumimo_groups;
3452                 change = true;
3453         }
3454
3455         if (info->attrs[NL80211_ATTR_MU_MIMO_FOLLOW_MAC_ADDR]) {
3456                 u32 cap_flag = NL80211_EXT_FEATURE_MU_MIMO_AIR_SNIFFER;
3457
3458                 if (type != NL80211_IFTYPE_MONITOR)
3459                         return -EINVAL;
3460
3461                 if (!wiphy_ext_feature_isset(&rdev->wiphy, cap_flag))
3462                         return -EOPNOTSUPP;
3463
3464                 params->vht_mumimo_follow_addr =
3465                         nla_data(info->attrs[NL80211_ATTR_MU_MIMO_FOLLOW_MAC_ADDR]);
3466                 change = true;
3467         }
3468
3469         return change ? 1 : 0;
3470 }
3471
3472 static int nl80211_valid_4addr(struct cfg80211_registered_device *rdev,
3473                                struct net_device *netdev, u8 use_4addr,
3474                                enum nl80211_iftype iftype)
3475 {
3476         if (!use_4addr) {
3477                 if (netdev && (netdev->priv_flags & IFF_BRIDGE_PORT))
3478                         return -EBUSY;
3479                 return 0;
3480         }
3481
3482         switch (iftype) {
3483         case NL80211_IFTYPE_AP_VLAN:
3484                 if (rdev->wiphy.flags & WIPHY_FLAG_4ADDR_AP)
3485                         return 0;
3486                 break;
3487         case NL80211_IFTYPE_STATION:
3488                 if (rdev->wiphy.flags & WIPHY_FLAG_4ADDR_STATION)
3489                         return 0;
3490                 break;
3491         default:
3492                 break;
3493         }
3494
3495         return -EOPNOTSUPP;
3496 }
3497
3498 static int nl80211_set_interface(struct sk_buff *skb, struct genl_info *info)
3499 {
3500         struct cfg80211_registered_device *rdev = info->user_ptr[0];
3501         struct vif_params params;
3502         int err;
3503         enum nl80211_iftype otype, ntype;
3504         struct net_device *dev = info->user_ptr[1];
3505         bool change = false;
3506
3507         memset(&params, 0, sizeof(params));
3508
3509         otype = ntype = dev->ieee80211_ptr->iftype;
3510
3511         if (info->attrs[NL80211_ATTR_IFTYPE]) {
3512                 ntype = nla_get_u32(info->attrs[NL80211_ATTR_IFTYPE]);
3513                 if (otype != ntype)
3514                         change = true;
3515         }
3516
3517         if (info->attrs[NL80211_ATTR_MESH_ID]) {
3518                 struct wireless_dev *wdev = dev->ieee80211_ptr;
3519
3520                 if (ntype != NL80211_IFTYPE_MESH_POINT)
3521                         return -EINVAL;
3522                 if (netif_running(dev))
3523                         return -EBUSY;
3524
3525                 wdev_lock(wdev);
3526                 BUILD_BUG_ON(IEEE80211_MAX_SSID_LEN !=
3527                              IEEE80211_MAX_MESH_ID_LEN);
3528                 wdev->mesh_id_up_len =
3529                         nla_len(info->attrs[NL80211_ATTR_MESH_ID]);
3530                 memcpy(wdev->ssid, nla_data(info->attrs[NL80211_ATTR_MESH_ID]),
3531                        wdev->mesh_id_up_len);
3532                 wdev_unlock(wdev);
3533         }
3534
3535         if (info->attrs[NL80211_ATTR_4ADDR]) {
3536                 params.use_4addr = !!nla_get_u8(info->attrs[NL80211_ATTR_4ADDR]);
3537                 change = true;
3538                 err = nl80211_valid_4addr(rdev, dev, params.use_4addr, ntype);
3539                 if (err)
3540                         return err;
3541         } else {
3542                 params.use_4addr = -1;
3543         }
3544
3545         err = nl80211_parse_mon_options(rdev, ntype, info, &params);
3546         if (err < 0)
3547                 return err;
3548         if (err > 0)
3549                 change = true;
3550
3551         if (change)
3552                 err = cfg80211_change_iface(rdev, dev, ntype, &params);
3553         else
3554                 err = 0;
3555
3556         if (!err && params.use_4addr != -1)
3557                 dev->ieee80211_ptr->use_4addr = params.use_4addr;
3558
3559         if (change && !err) {
3560                 struct wireless_dev *wdev = dev->ieee80211_ptr;
3561
3562                 nl80211_notify_iface(rdev, wdev, NL80211_CMD_SET_INTERFACE);
3563         }
3564
3565         return err;
3566 }
3567
3568 static int nl80211_new_interface(struct sk_buff *skb, struct genl_info *info)
3569 {
3570         struct cfg80211_registered_device *rdev = info->user_ptr[0];
3571         struct vif_params params;
3572         struct wireless_dev *wdev;
3573         struct sk_buff *msg;
3574         int err;
3575         enum nl80211_iftype type = NL80211_IFTYPE_UNSPECIFIED;
3576
3577         /* to avoid failing a new interface creation due to pending removal */
3578         cfg80211_destroy_ifaces(rdev);
3579
3580         memset(&params, 0, sizeof(params));
3581
3582         if (!info->attrs[NL80211_ATTR_IFNAME])
3583                 return -EINVAL;
3584
3585         if (info->attrs[NL80211_ATTR_IFTYPE])
3586                 type = nla_get_u32(info->attrs[NL80211_ATTR_IFTYPE]);
3587
3588         if (!rdev->ops->add_virtual_intf)
3589                 return -EOPNOTSUPP;
3590
3591         if ((type == NL80211_IFTYPE_P2P_DEVICE || type == NL80211_IFTYPE_NAN ||
3592              rdev->wiphy.features & NL80211_FEATURE_MAC_ON_CREATE) &&
3593             info->attrs[NL80211_ATTR_MAC]) {
3594                 nla_memcpy(params.macaddr, info->attrs[NL80211_ATTR_MAC],
3595                            ETH_ALEN);
3596                 if (!is_valid_ether_addr(params.macaddr))
3597                         return -EADDRNOTAVAIL;
3598         }
3599
3600         if (info->attrs[NL80211_ATTR_4ADDR]) {
3601                 params.use_4addr = !!nla_get_u8(info->attrs[NL80211_ATTR_4ADDR]);
3602                 err = nl80211_valid_4addr(rdev, NULL, params.use_4addr, type);
3603                 if (err)
3604                         return err;
3605         }
3606
3607         if (!cfg80211_iftype_allowed(&rdev->wiphy, type, params.use_4addr, 0))
3608                 return -EOPNOTSUPP;
3609
3610         err = nl80211_parse_mon_options(rdev, type, info, &params);
3611         if (err < 0)
3612                 return err;
3613
3614         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
3615         if (!msg)
3616                 return -ENOMEM;
3617
3618         wdev = rdev_add_virtual_intf(rdev,
3619                                 nla_data(info->attrs[NL80211_ATTR_IFNAME]),
3620                                 NET_NAME_USER, type, &params);
3621         if (WARN_ON(!wdev)) {
3622                 nlmsg_free(msg);
3623                 return -EPROTO;
3624         } else if (IS_ERR(wdev)) {
3625                 nlmsg_free(msg);
3626                 return PTR_ERR(wdev);
3627         }
3628
3629         if (info->attrs[NL80211_ATTR_SOCKET_OWNER])
3630                 wdev->owner_nlportid = info->snd_portid;
3631
3632         switch (type) {
3633         case NL80211_IFTYPE_MESH_POINT:
3634                 if (!info->attrs[NL80211_ATTR_MESH_ID])
3635                         break;
3636                 wdev_lock(wdev);
3637                 BUILD_BUG_ON(IEEE80211_MAX_SSID_LEN !=
3638                              IEEE80211_MAX_MESH_ID_LEN);
3639                 wdev->mesh_id_up_len =
3640                         nla_len(info->attrs[NL80211_ATTR_MESH_ID]);
3641                 memcpy(wdev->ssid, nla_data(info->attrs[NL80211_ATTR_MESH_ID]),
3642                        wdev->mesh_id_up_len);
3643                 wdev_unlock(wdev);
3644                 break;
3645         case NL80211_IFTYPE_NAN:
3646         case NL80211_IFTYPE_P2P_DEVICE:
3647                 /*
3648                  * P2P Device and NAN do not have a netdev, so don't go
3649                  * through the netdev notifier and must be added here
3650                  */
3651                 cfg80211_init_wdev(rdev, wdev);
3652                 break;
3653         default:
3654                 break;
3655         }
3656
3657         if (nl80211_send_iface(msg, info->snd_portid, info->snd_seq, 0,
3658                                rdev, wdev, NL80211_CMD_NEW_INTERFACE) < 0) {
3659                 nlmsg_free(msg);
3660                 return -ENOBUFS;
3661         }
3662
3663         return genlmsg_reply(msg, info);
3664 }
3665
3666 static int nl80211_del_interface(struct sk_buff *skb, struct genl_info *info)
3667 {
3668         struct cfg80211_registered_device *rdev = info->user_ptr[0];
3669         struct wireless_dev *wdev = info->user_ptr[1];
3670
3671         if (!rdev->ops->del_virtual_intf)
3672                 return -EOPNOTSUPP;
3673
3674         /*
3675          * If we remove a wireless device without a netdev then clear
3676          * user_ptr[1] so that nl80211_post_doit won't dereference it
3677          * to check if it needs to do dev_put(). Otherwise it crashes
3678          * since the wdev has been freed, unlike with a netdev where
3679          * we need the dev_put() for the netdev to really be freed.
3680          */
3681         if (!wdev->netdev)
3682                 info->user_ptr[1] = NULL;
3683
3684         return rdev_del_virtual_intf(rdev, wdev);
3685 }
3686
3687 static int nl80211_set_noack_map(struct sk_buff *skb, struct genl_info *info)
3688 {
3689         struct cfg80211_registered_device *rdev = info->user_ptr[0];
3690         struct net_device *dev = info->user_ptr[1];
3691         u16 noack_map;
3692
3693         if (!info->attrs[NL80211_ATTR_NOACK_MAP])
3694                 return -EINVAL;
3695
3696         if (!rdev->ops->set_noack_map)
3697                 return -EOPNOTSUPP;
3698
3699         noack_map = nla_get_u16(info->attrs[NL80211_ATTR_NOACK_MAP]);
3700
3701         return rdev_set_noack_map(rdev, dev, noack_map);
3702 }
3703
3704 struct get_key_cookie {
3705         struct sk_buff *msg;
3706         int error;
3707         int idx;
3708 };
3709
3710 static void get_key_callback(void *c, struct key_params *params)
3711 {
3712         struct nlattr *key;
3713         struct get_key_cookie *cookie = c;
3714
3715         if ((params->key &&
3716              nla_put(cookie->msg, NL80211_ATTR_KEY_DATA,
3717                      params->key_len, params->key)) ||
3718             (params->seq &&
3719              nla_put(cookie->msg, NL80211_ATTR_KEY_SEQ,
3720                      params->seq_len, params->seq)) ||
3721             (params->cipher &&
3722              nla_put_u32(cookie->msg, NL80211_ATTR_KEY_CIPHER,
3723                          params->cipher)))
3724                 goto nla_put_failure;
3725
3726         key = nla_nest_start_noflag(cookie->msg, NL80211_ATTR_KEY);
3727         if (!key)
3728                 goto nla_put_failure;
3729
3730         if ((params->key &&
3731              nla_put(cookie->msg, NL80211_KEY_DATA,
3732                      params->key_len, params->key)) ||
3733             (params->seq &&
3734              nla_put(cookie->msg, NL80211_KEY_SEQ,
3735                      params->seq_len, params->seq)) ||
3736             (params->cipher &&
3737              nla_put_u32(cookie->msg, NL80211_KEY_CIPHER,
3738                          params->cipher)))
3739                 goto nla_put_failure;
3740
3741         if (nla_put_u8(cookie->msg, NL80211_KEY_IDX, cookie->idx))
3742                 goto nla_put_failure;
3743
3744         nla_nest_end(cookie->msg, key);
3745
3746         return;
3747  nla_put_failure:
3748         cookie->error = 1;
3749 }
3750
3751 static int nl80211_get_key(struct sk_buff *skb, struct genl_info *info)
3752 {
3753         struct cfg80211_registered_device *rdev = info->user_ptr[0];
3754         int err;
3755         struct net_device *dev = info->user_ptr[1];
3756         u8 key_idx = 0;
3757         const u8 *mac_addr = NULL;
3758         bool pairwise;
3759         struct get_key_cookie cookie = {
3760                 .error = 0,
3761         };
3762         void *hdr;
3763         struct sk_buff *msg;
3764
3765         if (info->attrs[NL80211_ATTR_KEY_IDX])
3766                 key_idx = nla_get_u8(info->attrs[NL80211_ATTR_KEY_IDX]);
3767
3768         if (info->attrs[NL80211_ATTR_MAC])
3769                 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
3770
3771         pairwise = !!mac_addr;
3772         if (info->attrs[NL80211_ATTR_KEY_TYPE]) {
3773                 u32 kt = nla_get_u32(info->attrs[NL80211_ATTR_KEY_TYPE]);
3774
3775                 if (kt != NL80211_KEYTYPE_GROUP &&
3776                     kt != NL80211_KEYTYPE_PAIRWISE)
3777                         return -EINVAL;
3778                 pairwise = kt == NL80211_KEYTYPE_PAIRWISE;
3779         }
3780
3781         if (!rdev->ops->get_key)
3782                 return -EOPNOTSUPP;
3783
3784         if (!pairwise && mac_addr && !(rdev->wiphy.flags & WIPHY_FLAG_IBSS_RSN))
3785                 return -ENOENT;
3786
3787         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
3788         if (!msg)
3789                 return -ENOMEM;
3790
3791         hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
3792                              NL80211_CMD_NEW_KEY);
3793         if (!hdr)
3794                 goto nla_put_failure;
3795
3796         cookie.msg = msg;
3797         cookie.idx = key_idx;
3798
3799         if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
3800             nla_put_u8(msg, NL80211_ATTR_KEY_IDX, key_idx))
3801                 goto nla_put_failure;
3802         if (mac_addr &&
3803             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, mac_addr))
3804                 goto nla_put_failure;
3805
3806         err = rdev_get_key(rdev, dev, key_idx, pairwise, mac_addr, &cookie,
3807                            get_key_callback);
3808
3809         if (err)
3810                 goto free_msg;
3811
3812         if (cookie.error)
3813                 goto nla_put_failure;
3814
3815         genlmsg_end(msg, hdr);
3816         return genlmsg_reply(msg, info);
3817
3818  nla_put_failure:
3819         err = -ENOBUFS;
3820  free_msg:
3821         nlmsg_free(msg);
3822         return err;
3823 }
3824
3825 static int nl80211_set_key(struct sk_buff *skb, struct genl_info *info)
3826 {
3827         struct cfg80211_registered_device *rdev = info->user_ptr[0];
3828         struct key_parse key;
3829         int err;
3830         struct net_device *dev = info->user_ptr[1];
3831
3832         err = nl80211_parse_key(info, &key);
3833         if (err)
3834                 return err;
3835
3836         if (key.idx < 0)
3837                 return -EINVAL;
3838
3839         /* Only support setting default key and
3840          * Extended Key ID action NL80211_KEY_SET_TX.
3841          */
3842         if (!key.def && !key.defmgmt &&
3843             !(key.p.mode == NL80211_KEY_SET_TX))
3844                 return -EINVAL;
3845
3846         wdev_lock(dev->ieee80211_ptr);
3847
3848         if (key.def) {
3849                 if (!rdev->ops->set_default_key) {
3850                         err = -EOPNOTSUPP;
3851                         goto out;
3852                 }
3853
3854                 err = nl80211_key_allowed(dev->ieee80211_ptr);
3855                 if (err)
3856                         goto out;
3857
3858                 err = rdev_set_default_key(rdev, dev, key.idx,
3859                                                  key.def_uni, key.def_multi);
3860
3861                 if (err)
3862                         goto out;
3863
3864 #ifdef CONFIG_CFG80211_WEXT
3865                 dev->ieee80211_ptr->wext.default_key = key.idx;
3866 #endif
3867         } else if (key.defmgmt) {
3868                 if (key.def_uni || !key.def_multi) {
3869                         err = -EINVAL;
3870                         goto out;
3871                 }
3872
3873                 if (!rdev->ops->set_default_mgmt_key) {
3874                         err = -EOPNOTSUPP;
3875                         goto out;
3876                 }
3877
3878                 err = nl80211_key_allowed(dev->ieee80211_ptr);
3879                 if (err)
3880                         goto out;
3881
3882                 err = rdev_set_default_mgmt_key(rdev, dev, key.idx);
3883                 if (err)
3884                         goto out;
3885
3886 #ifdef CONFIG_CFG80211_WEXT
3887                 dev->ieee80211_ptr->wext.default_mgmt_key = key.idx;
3888 #endif
3889         } else if (key.p.mode == NL80211_KEY_SET_TX &&
3890                    wiphy_ext_feature_isset(&rdev->wiphy,
3891                                            NL80211_EXT_FEATURE_EXT_KEY_ID)) {
3892                 u8 *mac_addr = NULL;
3893
3894                 if (info->attrs[NL80211_ATTR_MAC])
3895                         mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
3896
3897                 if (!mac_addr || key.idx < 0 || key.idx > 1) {
3898                         err = -EINVAL;
3899                         goto out;
3900                 }
3901
3902                 err = rdev_add_key(rdev, dev, key.idx,
3903                                    NL80211_KEYTYPE_PAIRWISE,
3904                                    mac_addr, &key.p);
3905         } else {
3906                 err = -EINVAL;
3907         }
3908  out:
3909         wdev_unlock(dev->ieee80211_ptr);
3910
3911         return err;
3912 }
3913
3914 static int nl80211_new_key(struct sk_buff *skb, struct genl_info *info)
3915 {
3916         struct cfg80211_registered_device *rdev = info->user_ptr[0];
3917         int err;
3918         struct net_device *dev = info->user_ptr[1];
3919         struct key_parse key;
3920         const u8 *mac_addr = NULL;
3921
3922         err = nl80211_parse_key(info, &key);
3923         if (err)
3924                 return err;
3925
3926         if (!key.p.key)
3927                 return -EINVAL;
3928
3929         if (info->attrs[NL80211_ATTR_MAC])
3930                 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
3931
3932         if (key.type == -1) {
3933                 if (mac_addr)
3934                         key.type = NL80211_KEYTYPE_PAIRWISE;
3935                 else
3936                         key.type = NL80211_KEYTYPE_GROUP;
3937         }
3938
3939         /* for now */
3940         if (key.type != NL80211_KEYTYPE_PAIRWISE &&
3941             key.type != NL80211_KEYTYPE_GROUP)
3942                 return -EINVAL;
3943
3944         if (key.type == NL80211_KEYTYPE_GROUP &&
3945             info->attrs[NL80211_ATTR_VLAN_ID])
3946                 key.p.vlan_id = nla_get_u16(info->attrs[NL80211_ATTR_VLAN_ID]);
3947
3948         if (!rdev->ops->add_key)
3949                 return -EOPNOTSUPP;
3950
3951         if (cfg80211_validate_key_settings(rdev, &key.p, key.idx,
3952                                            key.type == NL80211_KEYTYPE_PAIRWISE,
3953                                            mac_addr))
3954                 return -EINVAL;
3955
3956         wdev_lock(dev->ieee80211_ptr);
3957         err = nl80211_key_allowed(dev->ieee80211_ptr);
3958         if (!err)
3959                 err = rdev_add_key(rdev, dev, key.idx,
3960                                    key.type == NL80211_KEYTYPE_PAIRWISE,
3961                                     mac_addr, &key.p);
3962         wdev_unlock(dev->ieee80211_ptr);
3963
3964         return err;
3965 }
3966
3967 static int nl80211_del_key(struct sk_buff *skb, struct genl_info *info)
3968 {
3969         struct cfg80211_registered_device *rdev = info->user_ptr[0];
3970         int err;
3971         struct net_device *dev = info->user_ptr[1];
3972         u8 *mac_addr = NULL;
3973         struct key_parse key;
3974
3975         err = nl80211_parse_key(info, &key);
3976         if (err)
3977                 return err;
3978
3979         if (info->attrs[NL80211_ATTR_MAC])
3980                 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
3981
3982         if (key.type == -1) {
3983                 if (mac_addr)
3984                         key.type = NL80211_KEYTYPE_PAIRWISE;
3985                 else
3986                         key.type = NL80211_KEYTYPE_GROUP;
3987         }
3988
3989         /* for now */
3990         if (key.type != NL80211_KEYTYPE_PAIRWISE &&
3991             key.type != NL80211_KEYTYPE_GROUP)
3992                 return -EINVAL;
3993
3994         if (!rdev->ops->del_key)
3995                 return -EOPNOTSUPP;
3996
3997         wdev_lock(dev->ieee80211_ptr);
3998         err = nl80211_key_allowed(dev->ieee80211_ptr);
3999
4000         if (key.type == NL80211_KEYTYPE_GROUP && mac_addr &&
4001             !(rdev->wiphy.flags & WIPHY_FLAG_IBSS_RSN))
4002                 err = -ENOENT;
4003
4004         if (!err)
4005                 err = rdev_del_key(rdev, dev, key.idx,
4006                                    key.type == NL80211_KEYTYPE_PAIRWISE,
4007                                    mac_addr);
4008
4009 #ifdef CONFIG_CFG80211_WEXT
4010         if (!err) {
4011                 if (key.idx == dev->ieee80211_ptr->wext.default_key)
4012                         dev->ieee80211_ptr->wext.default_key = -1;
4013                 else if (key.idx == dev->ieee80211_ptr->wext.default_mgmt_key)
4014                         dev->ieee80211_ptr->wext.default_mgmt_key = -1;
4015         }
4016 #endif
4017         wdev_unlock(dev->ieee80211_ptr);
4018
4019         return err;
4020 }
4021
4022 /* This function returns an error or the number of nested attributes */
4023 static int validate_acl_mac_addrs(struct nlattr *nl_attr)
4024 {
4025         struct nlattr *attr;
4026         int n_entries = 0, tmp;
4027
4028         nla_for_each_nested(attr, nl_attr, tmp) {
4029                 if (nla_len(attr) != ETH_ALEN)
4030                         return -EINVAL;
4031
4032                 n_entries++;
4033         }
4034
4035         return n_entries;
4036 }
4037
4038 /*
4039  * This function parses ACL information and allocates memory for ACL data.
4040  * On successful return, the calling function is responsible to free the
4041  * ACL buffer returned by this function.
4042  */
4043 static struct cfg80211_acl_data *parse_acl_data(struct wiphy *wiphy,
4044                                                 struct genl_info *info)
4045 {
4046         enum nl80211_acl_policy acl_policy;
4047         struct nlattr *attr;
4048         struct cfg80211_acl_data *acl;
4049         int i = 0, n_entries, tmp;
4050
4051         if (!wiphy->max_acl_mac_addrs)
4052                 return ERR_PTR(-EOPNOTSUPP);
4053
4054         if (!info->attrs[NL80211_ATTR_ACL_POLICY])
4055                 return ERR_PTR(-EINVAL);
4056
4057         acl_policy = nla_get_u32(info->attrs[NL80211_ATTR_ACL_POLICY]);
4058         if (acl_policy != NL80211_ACL_POLICY_ACCEPT_UNLESS_LISTED &&
4059             acl_policy != NL80211_ACL_POLICY_DENY_UNLESS_LISTED)
4060                 return ERR_PTR(-EINVAL);
4061
4062         if (!info->attrs[NL80211_ATTR_MAC_ADDRS])
4063                 return ERR_PTR(-EINVAL);
4064
4065         n_entries = validate_acl_mac_addrs(info->attrs[NL80211_ATTR_MAC_ADDRS]);
4066         if (n_entries < 0)
4067                 return ERR_PTR(n_entries);
4068
4069         if (n_entries > wiphy->max_acl_mac_addrs)
4070                 return ERR_PTR(-ENOTSUPP);
4071
4072         acl = kzalloc(struct_size(acl, mac_addrs, n_entries), GFP_KERNEL);
4073         if (!acl)
4074                 return ERR_PTR(-ENOMEM);
4075
4076         nla_for_each_nested(attr, info->attrs[NL80211_ATTR_MAC_ADDRS], tmp) {
4077                 memcpy(acl->mac_addrs[i].addr, nla_data(attr), ETH_ALEN);
4078                 i++;
4079         }
4080
4081         acl->n_acl_entries = n_entries;
4082         acl->acl_policy = acl_policy;
4083
4084         return acl;
4085 }
4086
4087 static int nl80211_set_mac_acl(struct sk_buff *skb, struct genl_info *info)
4088 {
4089         struct cfg80211_registered_device *rdev = info->user_ptr[0];
4090         struct net_device *dev = info->user_ptr[1];
4091         struct cfg80211_acl_data *acl;
4092         int err;
4093
4094         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
4095             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
4096                 return -EOPNOTSUPP;
4097
4098         if (!dev->ieee80211_ptr->beacon_interval)
4099                 return -EINVAL;
4100
4101         acl = parse_acl_data(&rdev->wiphy, info);
4102         if (IS_ERR(acl))
4103                 return PTR_ERR(acl);
4104
4105         err = rdev_set_mac_acl(rdev, dev, acl);
4106
4107         kfree(acl);
4108
4109         return err;
4110 }
4111
4112 static u32 rateset_to_mask(struct ieee80211_supported_band *sband,
4113                            u8 *rates, u8 rates_len)
4114 {
4115         u8 i;
4116         u32 mask = 0;
4117
4118         for (i = 0; i < rates_len; i++) {
4119                 int rate = (rates[i] & 0x7f) * 5;
4120                 int ridx;
4121
4122                 for (ridx = 0; ridx < sband->n_bitrates; ridx++) {
4123                         struct ieee80211_rate *srate =
4124                                 &sband->bitrates[ridx];
4125                         if (rate == srate->bitrate) {
4126                                 mask |= 1 << ridx;
4127                                 break;
4128                         }
4129                 }
4130                 if (ridx == sband->n_bitrates)
4131                         return 0; /* rate not found */
4132         }
4133
4134         return mask;
4135 }
4136
4137 static bool ht_rateset_to_mask(struct ieee80211_supported_band *sband,
4138                                u8 *rates, u8 rates_len,
4139                                u8 mcs[IEEE80211_HT_MCS_MASK_LEN])
4140 {
4141         u8 i;
4142
4143         memset(mcs, 0, IEEE80211_HT_MCS_MASK_LEN);
4144
4145         for (i = 0; i < rates_len; i++) {
4146                 int ridx, rbit;
4147
4148                 ridx = rates[i] / 8;
4149                 rbit = BIT(rates[i] % 8);
4150
4151                 /* check validity */
4152                 if ((ridx < 0) || (ridx >= IEEE80211_HT_MCS_MASK_LEN))
4153                         return false;
4154
4155                 /* check availability */
4156                 ridx = array_index_nospec(ridx, IEEE80211_HT_MCS_MASK_LEN);
4157                 if (sband->ht_cap.mcs.rx_mask[ridx] & rbit)
4158                         mcs[ridx] |= rbit;
4159                 else
4160                         return false;
4161         }
4162
4163         return true;
4164 }
4165
4166 static u16 vht_mcs_map_to_mcs_mask(u8 vht_mcs_map)
4167 {
4168         u16 mcs_mask = 0;
4169
4170         switch (vht_mcs_map) {
4171         case IEEE80211_VHT_MCS_NOT_SUPPORTED:
4172                 break;
4173         case IEEE80211_VHT_MCS_SUPPORT_0_7:
4174                 mcs_mask = 0x00FF;
4175                 break;
4176         case IEEE80211_VHT_MCS_SUPPORT_0_8:
4177                 mcs_mask = 0x01FF;
4178                 break;
4179         case IEEE80211_VHT_MCS_SUPPORT_0_9:
4180                 mcs_mask = 0x03FF;
4181                 break;
4182         default:
4183                 break;
4184         }
4185
4186         return mcs_mask;
4187 }
4188
4189 static void vht_build_mcs_mask(u16 vht_mcs_map,
4190                                u16 vht_mcs_mask[NL80211_VHT_NSS_MAX])
4191 {
4192         u8 nss;
4193
4194         for (nss = 0; nss < NL80211_VHT_NSS_MAX; nss++) {
4195                 vht_mcs_mask[nss] = vht_mcs_map_to_mcs_mask(vht_mcs_map & 0x03);
4196                 vht_mcs_map >>= 2;
4197         }
4198 }
4199
4200 static bool vht_set_mcs_mask(struct ieee80211_supported_band *sband,
4201                              struct nl80211_txrate_vht *txrate,
4202                              u16 mcs[NL80211_VHT_NSS_MAX])
4203 {
4204         u16 tx_mcs_map = le16_to_cpu(sband->vht_cap.vht_mcs.tx_mcs_map);
4205         u16 tx_mcs_mask[NL80211_VHT_NSS_MAX] = {};
4206         u8 i;
4207
4208         if (!sband->vht_cap.vht_supported)
4209                 return false;
4210
4211         memset(mcs, 0, sizeof(u16) * NL80211_VHT_NSS_MAX);
4212
4213         /* Build vht_mcs_mask from VHT capabilities */
4214         vht_build_mcs_mask(tx_mcs_map, tx_mcs_mask);
4215
4216         for (i = 0; i < NL80211_VHT_NSS_MAX; i++) {
4217                 if ((tx_mcs_mask[i] & txrate->mcs[i]) == txrate->mcs[i])
4218                         mcs[i] = txrate->mcs[i];
4219                 else
4220                         return false;
4221         }
4222
4223         return true;
4224 }
4225
4226 static const struct nla_policy nl80211_txattr_policy[NL80211_TXRATE_MAX + 1] = {
4227         [NL80211_TXRATE_LEGACY] = { .type = NLA_BINARY,
4228                                     .len = NL80211_MAX_SUPP_RATES },
4229         [NL80211_TXRATE_HT] = { .type = NLA_BINARY,
4230                                 .len = NL80211_MAX_SUPP_HT_RATES },
4231         [NL80211_TXRATE_VHT] = {
4232                 .type = NLA_EXACT_LEN_WARN,
4233                 .len = sizeof(struct nl80211_txrate_vht),
4234         },
4235         [NL80211_TXRATE_GI] = { .type = NLA_U8 },
4236 };
4237
4238 static int nl80211_parse_tx_bitrate_mask(struct genl_info *info,
4239                                          struct cfg80211_bitrate_mask *mask)
4240 {
4241         struct nlattr *tb[NL80211_TXRATE_MAX + 1];
4242         struct cfg80211_registered_device *rdev = info->user_ptr[0];
4243         int rem, i;
4244         struct nlattr *tx_rates;
4245         struct ieee80211_supported_band *sband;
4246         u16 vht_tx_mcs_map;
4247
4248         memset(mask, 0, sizeof(*mask));
4249         /* Default to all rates enabled */
4250         for (i = 0; i < NUM_NL80211_BANDS; i++) {
4251                 sband = rdev->wiphy.bands[i];
4252
4253                 if (!sband)
4254                         continue;
4255
4256                 mask->control[i].legacy = (1 << sband->n_bitrates) - 1;
4257                 memcpy(mask->control[i].ht_mcs,
4258                        sband->ht_cap.mcs.rx_mask,
4259                        sizeof(mask->control[i].ht_mcs));
4260
4261                 if (!sband->vht_cap.vht_supported)
4262                         continue;
4263
4264                 vht_tx_mcs_map = le16_to_cpu(sband->vht_cap.vht_mcs.tx_mcs_map);
4265                 vht_build_mcs_mask(vht_tx_mcs_map, mask->control[i].vht_mcs);
4266         }
4267
4268         /* if no rates are given set it back to the defaults */
4269         if (!info->attrs[NL80211_ATTR_TX_RATES])
4270                 goto out;
4271
4272         /* The nested attribute uses enum nl80211_band as the index. This maps
4273          * directly to the enum nl80211_band values used in cfg80211.
4274          */
4275         BUILD_BUG_ON(NL80211_MAX_SUPP_HT_RATES > IEEE80211_HT_MCS_MASK_LEN * 8);
4276         nla_for_each_nested(tx_rates, info->attrs[NL80211_ATTR_TX_RATES], rem) {
4277                 enum nl80211_band band = nla_type(tx_rates);
4278                 int err;
4279
4280                 if (band < 0 || band >= NUM_NL80211_BANDS)
4281                         return -EINVAL;
4282                 sband = rdev->wiphy.bands[band];
4283                 if (sband == NULL)
4284                         return -EINVAL;
4285                 err = nla_parse_nested_deprecated(tb, NL80211_TXRATE_MAX,
4286                                                   tx_rates,
4287                                                   nl80211_txattr_policy,
4288                                                   info->extack);
4289                 if (err)
4290                         return err;
4291                 if (tb[NL80211_TXRATE_LEGACY]) {
4292                         mask->control[band].legacy = rateset_to_mask(
4293                                 sband,
4294                                 nla_data(tb[NL80211_TXRATE_LEGACY]),
4295                                 nla_len(tb[NL80211_TXRATE_LEGACY]));
4296                         if ((mask->control[band].legacy == 0) &&
4297                             nla_len(tb[NL80211_TXRATE_LEGACY]))
4298                                 return -EINVAL;
4299                 }
4300                 if (tb[NL80211_TXRATE_HT]) {
4301                         if (!ht_rateset_to_mask(
4302                                         sband,
4303                                         nla_data(tb[NL80211_TXRATE_HT]),
4304                                         nla_len(tb[NL80211_TXRATE_HT]),
4305                                         mask->control[band].ht_mcs))
4306                                 return -EINVAL;
4307                 }
4308                 if (tb[NL80211_TXRATE_VHT]) {
4309                         if (!vht_set_mcs_mask(
4310                                         sband,
4311                                         nla_data(tb[NL80211_TXRATE_VHT]),
4312                                         mask->control[band].vht_mcs))
4313                                 return -EINVAL;
4314                 }
4315                 if (tb[NL80211_TXRATE_GI]) {
4316                         mask->control[band].gi =
4317                                 nla_get_u8(tb[NL80211_TXRATE_GI]);
4318                         if (mask->control[band].gi > NL80211_TXRATE_FORCE_LGI)
4319                                 return -EINVAL;
4320                 }
4321
4322                 if (mask->control[band].legacy == 0) {
4323                         /* don't allow empty legacy rates if HT or VHT
4324                          * are not even supported.
4325                          */
4326                         if (!(rdev->wiphy.bands[band]->ht_cap.ht_supported ||
4327                               rdev->wiphy.bands[band]->vht_cap.vht_supported))
4328                                 return -EINVAL;
4329
4330                         for (i = 0; i < IEEE80211_HT_MCS_MASK_LEN; i++)
4331                                 if (mask->control[band].ht_mcs[i])
4332                                         goto out;
4333
4334                         for (i = 0; i < NL80211_VHT_NSS_MAX; i++)
4335                                 if (mask->control[band].vht_mcs[i])
4336                                         goto out;
4337
4338                         /* legacy and mcs rates may not be both empty */
4339                         return -EINVAL;
4340                 }
4341         }
4342
4343 out:
4344         return 0;
4345 }
4346
4347 static int validate_beacon_tx_rate(struct cfg80211_registered_device *rdev,
4348                                    enum nl80211_band band,
4349                                    struct cfg80211_bitrate_mask *beacon_rate)
4350 {
4351         u32 count_ht, count_vht, i;
4352         u32 rate = beacon_rate->control[band].legacy;
4353
4354         /* Allow only one rate */
4355         if (hweight32(rate) > 1)
4356                 return -EINVAL;
4357
4358         count_ht = 0;
4359         for (i = 0; i < IEEE80211_HT_MCS_MASK_LEN; i++) {
4360                 if (hweight8(beacon_rate->control[band].ht_mcs[i]) > 1) {
4361                         return -EINVAL;
4362                 } else if (beacon_rate->control[band].ht_mcs[i]) {
4363                         count_ht++;
4364                         if (count_ht > 1)
4365                                 return -EINVAL;
4366                 }
4367                 if (count_ht && rate)
4368                         return -EINVAL;
4369         }
4370
4371         count_vht = 0;
4372         for (i = 0; i < NL80211_VHT_NSS_MAX; i++) {
4373                 if (hweight16(beacon_rate->control[band].vht_mcs[i]) > 1) {
4374                         return -EINVAL;
4375                 } else if (beacon_rate->control[band].vht_mcs[i]) {
4376                         count_vht++;
4377                         if (count_vht > 1)
4378                                 return -EINVAL;
4379                 }
4380                 if (count_vht && rate)
4381                         return -EINVAL;
4382         }
4383
4384         if ((count_ht && count_vht) || (!rate && !count_ht && !count_vht))
4385                 return -EINVAL;
4386
4387         if (rate &&
4388             !wiphy_ext_feature_isset(&rdev->wiphy,
4389                                      NL80211_EXT_FEATURE_BEACON_RATE_LEGACY))
4390                 return -EINVAL;
4391         if (count_ht &&
4392             !wiphy_ext_feature_isset(&rdev->wiphy,
4393                                      NL80211_EXT_FEATURE_BEACON_RATE_HT))
4394                 return -EINVAL;
4395         if (count_vht &&
4396             !wiphy_ext_feature_isset(&rdev->wiphy,
4397                                      NL80211_EXT_FEATURE_BEACON_RATE_VHT))
4398                 return -EINVAL;
4399
4400         return 0;
4401 }
4402
4403 static int nl80211_parse_beacon(struct cfg80211_registered_device *rdev,
4404                                 struct nlattr *attrs[],
4405                                 struct cfg80211_beacon_data *bcn)
4406 {
4407         bool haveinfo = false;
4408         int err;
4409
4410         memset(bcn, 0, sizeof(*bcn));
4411
4412         if (attrs[NL80211_ATTR_BEACON_HEAD]) {
4413                 bcn->head = nla_data(attrs[NL80211_ATTR_BEACON_HEAD]);
4414                 bcn->head_len = nla_len(attrs[NL80211_ATTR_BEACON_HEAD]);
4415                 if (!bcn->head_len)
4416                         return -EINVAL;
4417                 haveinfo = true;
4418         }
4419
4420         if (attrs[NL80211_ATTR_BEACON_TAIL]) {
4421                 bcn->tail = nla_data(attrs[NL80211_ATTR_BEACON_TAIL]);
4422                 bcn->tail_len = nla_len(attrs[NL80211_ATTR_BEACON_TAIL]);
4423                 haveinfo = true;
4424         }
4425
4426         if (!haveinfo)
4427                 return -EINVAL;
4428
4429         if (attrs[NL80211_ATTR_IE]) {
4430                 bcn->beacon_ies = nla_data(attrs[NL80211_ATTR_IE]);
4431                 bcn->beacon_ies_len = nla_len(attrs[NL80211_ATTR_IE]);
4432         }
4433
4434         if (attrs[NL80211_ATTR_IE_PROBE_RESP]) {
4435                 bcn->proberesp_ies =
4436                         nla_data(attrs[NL80211_ATTR_IE_PROBE_RESP]);
4437                 bcn->proberesp_ies_len =
4438                         nla_len(attrs[NL80211_ATTR_IE_PROBE_RESP]);
4439         }
4440
4441         if (attrs[NL80211_ATTR_IE_ASSOC_RESP]) {
4442                 bcn->assocresp_ies =
4443                         nla_data(attrs[NL80211_ATTR_IE_ASSOC_RESP]);
4444                 bcn->assocresp_ies_len =
4445                         nla_len(attrs[NL80211_ATTR_IE_ASSOC_RESP]);
4446         }
4447
4448         if (attrs[NL80211_ATTR_PROBE_RESP]) {
4449                 bcn->probe_resp = nla_data(attrs[NL80211_ATTR_PROBE_RESP]);
4450                 bcn->probe_resp_len = nla_len(attrs[NL80211_ATTR_PROBE_RESP]);
4451         }
4452
4453         if (attrs[NL80211_ATTR_FTM_RESPONDER]) {
4454                 struct nlattr *tb[NL80211_FTM_RESP_ATTR_MAX + 1];
4455
4456                 err = nla_parse_nested_deprecated(tb,
4457                                                   NL80211_FTM_RESP_ATTR_MAX,
4458                                                   attrs[NL80211_ATTR_FTM_RESPONDER],
4459                                                   NULL, NULL);
4460                 if (err)
4461                         return err;
4462
4463                 if (tb[NL80211_FTM_RESP_ATTR_ENABLED] &&
4464                     wiphy_ext_feature_isset(&rdev->wiphy,
4465                                             NL80211_EXT_FEATURE_ENABLE_FTM_RESPONDER))
4466                         bcn->ftm_responder = 1;
4467                 else
4468                         return -EOPNOTSUPP;
4469
4470                 if (tb[NL80211_FTM_RESP_ATTR_LCI]) {
4471                         bcn->lci = nla_data(tb[NL80211_FTM_RESP_ATTR_LCI]);
4472                         bcn->lci_len = nla_len(tb[NL80211_FTM_RESP_ATTR_LCI]);
4473                 }
4474
4475                 if (tb[NL80211_FTM_RESP_ATTR_CIVICLOC]) {
4476                         bcn->civicloc = nla_data(tb[NL80211_FTM_RESP_ATTR_CIVICLOC]);
4477                         bcn->civicloc_len = nla_len(tb[NL80211_FTM_RESP_ATTR_CIVICLOC]);
4478                 }
4479         } else {
4480                 bcn->ftm_responder = -1;
4481         }
4482
4483         return 0;
4484 }
4485
4486 static int nl80211_parse_he_obss_pd(struct nlattr *attrs,
4487                                     struct ieee80211_he_obss_pd *he_obss_pd)
4488 {
4489         struct nlattr *tb[NL80211_HE_OBSS_PD_ATTR_MAX + 1];
4490         int err;
4491
4492         err = nla_parse_nested(tb, NL80211_HE_OBSS_PD_ATTR_MAX, attrs,
4493                                he_obss_pd_policy, NULL);
4494         if (err)
4495                 return err;
4496
4497         if (!tb[NL80211_HE_OBSS_PD_ATTR_MIN_OFFSET] ||
4498             !tb[NL80211_HE_OBSS_PD_ATTR_MAX_OFFSET])
4499                 return -EINVAL;
4500
4501         he_obss_pd->min_offset =
4502                 nla_get_u32(tb[NL80211_HE_OBSS_PD_ATTR_MIN_OFFSET]);
4503         he_obss_pd->max_offset =
4504                 nla_get_u32(tb[NL80211_HE_OBSS_PD_ATTR_MAX_OFFSET]);
4505
4506         if (he_obss_pd->min_offset >= he_obss_pd->max_offset)
4507                 return -EINVAL;
4508
4509         he_obss_pd->enable = true;
4510
4511         return 0;
4512 }
4513
4514 static void nl80211_check_ap_rate_selectors(struct cfg80211_ap_settings *params,
4515                                             const u8 *rates)
4516 {
4517         int i;
4518
4519         if (!rates)
4520                 return;
4521
4522         for (i = 0; i < rates[1]; i++) {
4523                 if (rates[2 + i] == BSS_MEMBERSHIP_SELECTOR_HT_PHY)
4524                         params->ht_required = true;
4525                 if (rates[2 + i] == BSS_MEMBERSHIP_SELECTOR_VHT_PHY)
4526                         params->vht_required = true;
4527         }
4528 }
4529
4530 /*
4531  * Since the nl80211 API didn't include, from the beginning, attributes about
4532  * HT/VHT requirements/capabilities, we parse them out of the IEs for the
4533  * benefit of drivers that rebuild IEs in the firmware.
4534  */
4535 static void nl80211_calculate_ap_params(struct cfg80211_ap_settings *params)
4536 {
4537         const struct cfg80211_beacon_data *bcn = &params->beacon;
4538         size_t ies_len = bcn->tail_len;
4539         const u8 *ies = bcn->tail;
4540         const u8 *rates;
4541         const u8 *cap;
4542
4543         rates = cfg80211_find_ie(WLAN_EID_SUPP_RATES, ies, ies_len);
4544         nl80211_check_ap_rate_selectors(params, rates);
4545
4546         rates = cfg80211_find_ie(WLAN_EID_EXT_SUPP_RATES, ies, ies_len);
4547         nl80211_check_ap_rate_selectors(params, rates);
4548
4549         cap = cfg80211_find_ie(WLAN_EID_HT_CAPABILITY, ies, ies_len);
4550         if (cap && cap[1] >= sizeof(*params->ht_cap))
4551                 params->ht_cap = (void *)(cap + 2);
4552         cap = cfg80211_find_ie(WLAN_EID_VHT_CAPABILITY, ies, ies_len);
4553         if (cap && cap[1] >= sizeof(*params->vht_cap))
4554                 params->vht_cap = (void *)(cap + 2);
4555         cap = cfg80211_find_ext_ie(WLAN_EID_EXT_HE_CAPABILITY, ies, ies_len);
4556         if (cap && cap[1] >= sizeof(*params->he_cap) + 1)
4557                 params->he_cap = (void *)(cap + 3);
4558 }
4559
4560 static bool nl80211_get_ap_channel(struct cfg80211_registered_device *rdev,
4561                                    struct cfg80211_ap_settings *params)
4562 {
4563         struct wireless_dev *wdev;
4564         bool ret = false;
4565
4566         list_for_each_entry(wdev, &rdev->wiphy.wdev_list, list) {
4567                 if (wdev->iftype != NL80211_IFTYPE_AP &&
4568                     wdev->iftype != NL80211_IFTYPE_P2P_GO)
4569                         continue;
4570
4571                 if (!wdev->preset_chandef.chan)
4572                         continue;
4573
4574                 params->chandef = wdev->preset_chandef;
4575                 ret = true;
4576                 break;
4577         }
4578
4579         return ret;
4580 }
4581
4582 static bool nl80211_valid_auth_type(struct cfg80211_registered_device *rdev,
4583                                     enum nl80211_auth_type auth_type,
4584                                     enum nl80211_commands cmd)
4585 {
4586         if (auth_type > NL80211_AUTHTYPE_MAX)
4587                 return false;
4588
4589         switch (cmd) {
4590         case NL80211_CMD_AUTHENTICATE:
4591                 if (!(rdev->wiphy.features & NL80211_FEATURE_SAE) &&
4592                     auth_type == NL80211_AUTHTYPE_SAE)
4593                         return false;
4594                 if (!wiphy_ext_feature_isset(&rdev->wiphy,
4595                                              NL80211_EXT_FEATURE_FILS_STA) &&
4596                     (auth_type == NL80211_AUTHTYPE_FILS_SK ||
4597                      auth_type == NL80211_AUTHTYPE_FILS_SK_PFS ||
4598                      auth_type == NL80211_AUTHTYPE_FILS_PK))
4599                         return false;
4600                 return true;
4601         case NL80211_CMD_CONNECT:
4602                 if (!(rdev->wiphy.features & NL80211_FEATURE_SAE) &&
4603                     !wiphy_ext_feature_isset(&rdev->wiphy,
4604                                              NL80211_EXT_FEATURE_SAE_OFFLOAD) &&
4605                     auth_type == NL80211_AUTHTYPE_SAE)
4606                         return false;
4607
4608                 /* FILS with SK PFS or PK not supported yet */
4609                 if (auth_type == NL80211_AUTHTYPE_FILS_SK_PFS ||
4610                     auth_type == NL80211_AUTHTYPE_FILS_PK)
4611                         return false;
4612                 if (!wiphy_ext_feature_isset(
4613                             &rdev->wiphy,
4614                             NL80211_EXT_FEATURE_FILS_SK_OFFLOAD) &&
4615                     auth_type == NL80211_AUTHTYPE_FILS_SK)
4616                         return false;
4617                 return true;
4618         case NL80211_CMD_START_AP:
4619                 /* SAE not supported yet */
4620                 if (auth_type == NL80211_AUTHTYPE_SAE)
4621                         return false;
4622                 /* FILS not supported yet */
4623                 if (auth_type == NL80211_AUTHTYPE_FILS_SK ||
4624                     auth_type == NL80211_AUTHTYPE_FILS_SK_PFS ||
4625                     auth_type == NL80211_AUTHTYPE_FILS_PK)
4626                         return false;
4627                 return true;
4628         default:
4629                 return false;
4630         }
4631 }
4632
4633 static int nl80211_start_ap(struct sk_buff *skb, struct genl_info *info)
4634 {
4635         struct cfg80211_registered_device *rdev = info->user_ptr[0];
4636         struct net_device *dev = info->user_ptr[1];
4637         struct wireless_dev *wdev = dev->ieee80211_ptr;
4638         struct cfg80211_ap_settings params;
4639         int err;
4640
4641         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
4642             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
4643                 return -EOPNOTSUPP;
4644
4645         if (!rdev->ops->start_ap)
4646                 return -EOPNOTSUPP;
4647
4648         if (wdev->beacon_interval)
4649                 return -EALREADY;
4650
4651         memset(&params, 0, sizeof(params));
4652
4653         /* these are required for START_AP */
4654         if (!info->attrs[NL80211_ATTR_BEACON_INTERVAL] ||
4655             !info->attrs[NL80211_ATTR_DTIM_PERIOD] ||
4656             !info->attrs[NL80211_ATTR_BEACON_HEAD])
4657                 return -EINVAL;
4658
4659         err = nl80211_parse_beacon(rdev, info->attrs, &params.beacon);
4660         if (err)
4661                 return err;
4662
4663         params.beacon_interval =
4664                 nla_get_u32(info->attrs[NL80211_ATTR_BEACON_INTERVAL]);
4665         params.dtim_period =
4666                 nla_get_u32(info->attrs[NL80211_ATTR_DTIM_PERIOD]);
4667
4668         err = cfg80211_validate_beacon_int(rdev, dev->ieee80211_ptr->iftype,
4669                                            params.beacon_interval);
4670         if (err)
4671                 return err;
4672
4673         /*
4674          * In theory, some of these attributes should be required here
4675          * but since they were not used when the command was originally
4676          * added, keep them optional for old user space programs to let
4677          * them continue to work with drivers that do not need the
4678          * additional information -- drivers must check!
4679          */
4680         if (info->attrs[NL80211_ATTR_SSID]) {
4681                 params.ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
4682                 params.ssid_len =
4683                         nla_len(info->attrs[NL80211_ATTR_SSID]);
4684                 if (params.ssid_len == 0 ||
4685                     params.ssid_len > IEEE80211_MAX_SSID_LEN)
4686                         return -EINVAL;
4687         }
4688
4689         if (info->attrs[NL80211_ATTR_HIDDEN_SSID])
4690                 params.hidden_ssid = nla_get_u32(
4691                         info->attrs[NL80211_ATTR_HIDDEN_SSID]);
4692
4693         params.privacy = !!info->attrs[NL80211_ATTR_PRIVACY];
4694
4695         if (info->attrs[NL80211_ATTR_AUTH_TYPE]) {
4696                 params.auth_type = nla_get_u32(
4697                         info->attrs[NL80211_ATTR_AUTH_TYPE]);
4698                 if (!nl80211_valid_auth_type(rdev, params.auth_type,
4699                                              NL80211_CMD_START_AP))
4700                         return -EINVAL;
4701         } else
4702                 params.auth_type = NL80211_AUTHTYPE_AUTOMATIC;
4703
4704         err = nl80211_crypto_settings(rdev, info, &params.crypto,
4705                                       NL80211_MAX_NR_CIPHER_SUITES);
4706         if (err)
4707                 return err;
4708
4709         if (info->attrs[NL80211_ATTR_INACTIVITY_TIMEOUT]) {
4710                 if (!(rdev->wiphy.features & NL80211_FEATURE_INACTIVITY_TIMER))
4711                         return -EOPNOTSUPP;
4712                 params.inactivity_timeout = nla_get_u16(
4713                         info->attrs[NL80211_ATTR_INACTIVITY_TIMEOUT]);
4714         }
4715
4716         if (info->attrs[NL80211_ATTR_P2P_CTWINDOW]) {
4717                 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
4718                         return -EINVAL;
4719                 params.p2p_ctwindow =
4720                         nla_get_u8(info->attrs[NL80211_ATTR_P2P_CTWINDOW]);
4721                 if (params.p2p_ctwindow != 0 &&
4722                     !(rdev->wiphy.features & NL80211_FEATURE_P2P_GO_CTWIN))
4723                         return -EINVAL;
4724         }
4725
4726         if (info->attrs[NL80211_ATTR_P2P_OPPPS]) {
4727                 u8 tmp;
4728
4729                 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
4730                         return -EINVAL;
4731                 tmp = nla_get_u8(info->attrs[NL80211_ATTR_P2P_OPPPS]);
4732                 params.p2p_opp_ps = tmp;
4733                 if (params.p2p_opp_ps != 0 &&
4734                     !(rdev->wiphy.features & NL80211_FEATURE_P2P_GO_OPPPS))
4735                         return -EINVAL;
4736         }
4737
4738         if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
4739                 err = nl80211_parse_chandef(rdev, info, &params.chandef);
4740                 if (err)
4741                         return err;
4742         } else if (wdev->preset_chandef.chan) {
4743                 params.chandef = wdev->preset_chandef;
4744         } else if (!nl80211_get_ap_channel(rdev, &params))
4745                 return -EINVAL;
4746
4747         if (!cfg80211_reg_can_beacon_relax(&rdev->wiphy, &params.chandef,
4748                                            wdev->iftype))
4749                 return -EINVAL;
4750
4751         if (info->attrs[NL80211_ATTR_TX_RATES]) {
4752                 err = nl80211_parse_tx_bitrate_mask(info, &params.beacon_rate);
4753                 if (err)
4754                         return err;
4755
4756                 err = validate_beacon_tx_rate(rdev, params.chandef.chan->band,
4757                                               &params.beacon_rate);
4758                 if (err)
4759                         return err;
4760         }
4761
4762         if (info->attrs[NL80211_ATTR_SMPS_MODE]) {
4763                 params.smps_mode =
4764                         nla_get_u8(info->attrs[NL80211_ATTR_SMPS_MODE]);
4765                 switch (params.smps_mode) {
4766                 case NL80211_SMPS_OFF:
4767                         break;
4768                 case NL80211_SMPS_STATIC:
4769                         if (!(rdev->wiphy.features &
4770                               NL80211_FEATURE_STATIC_SMPS))
4771                                 return -EINVAL;
4772                         break;
4773                 case NL80211_SMPS_DYNAMIC:
4774                         if (!(rdev->wiphy.features &
4775                               NL80211_FEATURE_DYNAMIC_SMPS))
4776                                 return -EINVAL;
4777                         break;
4778                 default:
4779                         return -EINVAL;
4780                 }
4781         } else {
4782                 params.smps_mode = NL80211_SMPS_OFF;
4783         }
4784
4785         params.pbss = nla_get_flag(info->attrs[NL80211_ATTR_PBSS]);
4786         if (params.pbss && !rdev->wiphy.bands[NL80211_BAND_60GHZ])
4787                 return -EOPNOTSUPP;
4788
4789         if (info->attrs[NL80211_ATTR_ACL_POLICY]) {
4790                 params.acl = parse_acl_data(&rdev->wiphy, info);
4791                 if (IS_ERR(params.acl))
4792                         return PTR_ERR(params.acl);
4793         }
4794
4795         params.twt_responder =
4796                     nla_get_flag(info->attrs[NL80211_ATTR_TWT_RESPONDER]);
4797
4798         if (info->attrs[NL80211_ATTR_HE_OBSS_PD]) {
4799                 err = nl80211_parse_he_obss_pd(
4800                                         info->attrs[NL80211_ATTR_HE_OBSS_PD],
4801                                         &params.he_obss_pd);
4802                 if (err)
4803                         return err;
4804         }
4805
4806         nl80211_calculate_ap_params(&params);
4807
4808         if (info->attrs[NL80211_ATTR_EXTERNAL_AUTH_SUPPORT])
4809                 params.flags |= AP_SETTINGS_EXTERNAL_AUTH_SUPPORT;
4810
4811         wdev_lock(wdev);
4812         err = rdev_start_ap(rdev, dev, &params);
4813         if (!err) {
4814                 wdev->preset_chandef = params.chandef;
4815                 wdev->beacon_interval = params.beacon_interval;
4816                 wdev->chandef = params.chandef;
4817                 wdev->ssid_len = params.ssid_len;
4818                 memcpy(wdev->ssid, params.ssid, wdev->ssid_len);
4819
4820                 if (info->attrs[NL80211_ATTR_SOCKET_OWNER])
4821                         wdev->conn_owner_nlportid = info->snd_portid;
4822         }
4823         wdev_unlock(wdev);
4824
4825         kfree(params.acl);
4826
4827         return err;
4828 }
4829
4830 static int nl80211_set_beacon(struct sk_buff *skb, struct genl_info *info)
4831 {
4832         struct cfg80211_registered_device *rdev = info->user_ptr[0];
4833         struct net_device *dev = info->user_ptr[1];
4834         struct wireless_dev *wdev = dev->ieee80211_ptr;
4835         struct cfg80211_beacon_data params;
4836         int err;
4837
4838         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
4839             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
4840                 return -EOPNOTSUPP;
4841
4842         if (!rdev->ops->change_beacon)
4843                 return -EOPNOTSUPP;
4844
4845         if (!wdev->beacon_interval)
4846                 return -EINVAL;
4847
4848         err = nl80211_parse_beacon(rdev, info->attrs, &params);
4849         if (err)
4850                 return err;
4851
4852         wdev_lock(wdev);
4853         err = rdev_change_beacon(rdev, dev, &params);
4854         wdev_unlock(wdev);
4855
4856         return err;
4857 }
4858
4859 static int nl80211_stop_ap(struct sk_buff *skb, struct genl_info *info)
4860 {
4861         struct cfg80211_registered_device *rdev = info->user_ptr[0];
4862         struct net_device *dev = info->user_ptr[1];
4863
4864         return cfg80211_stop_ap(rdev, dev, false);
4865 }
4866
4867 static const struct nla_policy sta_flags_policy[NL80211_STA_FLAG_MAX + 1] = {
4868         [NL80211_STA_FLAG_AUTHORIZED] = { .type = NLA_FLAG },
4869         [NL80211_STA_FLAG_SHORT_PREAMBLE] = { .type = NLA_FLAG },
4870         [NL80211_STA_FLAG_WME] = { .type = NLA_FLAG },
4871         [NL80211_STA_FLAG_MFP] = { .type = NLA_FLAG },
4872         [NL80211_STA_FLAG_AUTHENTICATED] = { .type = NLA_FLAG },
4873         [NL80211_STA_FLAG_TDLS_PEER] = { .type = NLA_FLAG },
4874 };
4875
4876 static int parse_station_flags(struct genl_info *info,
4877                                enum nl80211_iftype iftype,
4878                                struct station_parameters *params)
4879 {
4880         struct nlattr *flags[NL80211_STA_FLAG_MAX + 1];
4881         struct nlattr *nla;
4882         int flag;
4883
4884         /*
4885          * Try parsing the new attribute first so userspace
4886          * can specify both for older kernels.
4887          */
4888         nla = info->attrs[NL80211_ATTR_STA_FLAGS2];
4889         if (nla) {
4890                 struct nl80211_sta_flag_update *sta_flags;
4891
4892                 sta_flags = nla_data(nla);
4893                 params->sta_flags_mask = sta_flags->mask;
4894                 params->sta_flags_set = sta_flags->set;
4895                 params->sta_flags_set &= params->sta_flags_mask;
4896                 if ((params->sta_flags_mask |
4897                      params->sta_flags_set) & BIT(__NL80211_STA_FLAG_INVALID))
4898                         return -EINVAL;
4899                 return 0;
4900         }
4901
4902         /* if present, parse the old attribute */
4903
4904         nla = info->attrs[NL80211_ATTR_STA_FLAGS];
4905         if (!nla)
4906                 return 0;
4907
4908         if (nla_parse_nested_deprecated(flags, NL80211_STA_FLAG_MAX, nla, sta_flags_policy, info->extack))
4909                 return -EINVAL;
4910
4911         /*
4912          * Only allow certain flags for interface types so that
4913          * other attributes are silently ignored. Remember that
4914          * this is backward compatibility code with old userspace
4915          * and shouldn't be hit in other cases anyway.
4916          */
4917         switch (iftype) {
4918         case NL80211_IFTYPE_AP:
4919         case NL80211_IFTYPE_AP_VLAN:
4920         case NL80211_IFTYPE_P2P_GO:
4921                 params->sta_flags_mask = BIT(NL80211_STA_FLAG_AUTHORIZED) |
4922                                          BIT(NL80211_STA_FLAG_SHORT_PREAMBLE) |
4923                                          BIT(NL80211_STA_FLAG_WME) |
4924                                          BIT(NL80211_STA_FLAG_MFP);
4925                 break;
4926         case NL80211_IFTYPE_P2P_CLIENT:
4927         case NL80211_IFTYPE_STATION:
4928                 params->sta_flags_mask = BIT(NL80211_STA_FLAG_AUTHORIZED) |
4929                                          BIT(NL80211_STA_FLAG_TDLS_PEER);
4930                 break;
4931         case NL80211_IFTYPE_MESH_POINT:
4932                 params->sta_flags_mask = BIT(NL80211_STA_FLAG_AUTHENTICATED) |
4933                                          BIT(NL80211_STA_FLAG_MFP) |
4934                                          BIT(NL80211_STA_FLAG_AUTHORIZED);
4935                 break;
4936         default:
4937                 return -EINVAL;
4938         }
4939
4940         for (flag = 1; flag <= NL80211_STA_FLAG_MAX; flag++) {
4941                 if (flags[flag]) {
4942                         params->sta_flags_set |= (1<<flag);
4943
4944                         /* no longer support new API additions in old API */
4945                         if (flag > NL80211_STA_FLAG_MAX_OLD_API)
4946                                 return -EINVAL;
4947                 }
4948         }
4949
4950         return 0;
4951 }
4952
4953 bool nl80211_put_sta_rate(struct sk_buff *msg, struct rate_info *info, int attr)
4954 {
4955         struct nlattr *rate;
4956         u32 bitrate;
4957         u16 bitrate_compat;
4958         enum nl80211_rate_info rate_flg;
4959
4960         rate = nla_nest_start_noflag(msg, attr);
4961         if (!rate)
4962                 return false;
4963
4964         /* cfg80211_calculate_bitrate will return 0 for mcs >= 32 */
4965         bitrate = cfg80211_calculate_bitrate(info);
4966         /* report 16-bit bitrate only if we can */
4967         bitrate_compat = bitrate < (1UL << 16) ? bitrate : 0;
4968         if (bitrate > 0 &&
4969             nla_put_u32(msg, NL80211_RATE_INFO_BITRATE32, bitrate))
4970                 return false;
4971         if (bitrate_compat > 0 &&
4972             nla_put_u16(msg, NL80211_RATE_INFO_BITRATE, bitrate_compat))
4973                 return false;
4974
4975         switch (info->bw) {
4976         case RATE_INFO_BW_5:
4977                 rate_flg = NL80211_RATE_INFO_5_MHZ_WIDTH;
4978                 break;
4979         case RATE_INFO_BW_10:
4980                 rate_flg = NL80211_RATE_INFO_10_MHZ_WIDTH;
4981                 break;
4982         default:
4983                 WARN_ON(1);
4984                 /* fall through */
4985         case RATE_INFO_BW_20:
4986                 rate_flg = 0;
4987                 break;
4988         case RATE_INFO_BW_40:
4989                 rate_flg = NL80211_RATE_INFO_40_MHZ_WIDTH;
4990                 break;
4991         case RATE_INFO_BW_80:
4992                 rate_flg = NL80211_RATE_INFO_80_MHZ_WIDTH;
4993                 break;
4994         case RATE_INFO_BW_160:
4995                 rate_flg = NL80211_RATE_INFO_160_MHZ_WIDTH;
4996                 break;
4997         case RATE_INFO_BW_HE_RU:
4998                 rate_flg = 0;
4999                 WARN_ON(!(info->flags & RATE_INFO_FLAGS_HE_MCS));
5000         }
5001
5002         if (rate_flg && nla_put_flag(msg, rate_flg))
5003                 return false;
5004
5005         if (info->flags & RATE_INFO_FLAGS_MCS) {
5006                 if (nla_put_u8(msg, NL80211_RATE_INFO_MCS, info->mcs))
5007                         return false;
5008                 if (info->flags & RATE_INFO_FLAGS_SHORT_GI &&
5009                     nla_put_flag(msg, NL80211_RATE_INFO_SHORT_GI))
5010                         return false;
5011         } else if (info->flags & RATE_INFO_FLAGS_VHT_MCS) {
5012                 if (nla_put_u8(msg, NL80211_RATE_INFO_VHT_MCS, info->mcs))
5013                         return false;
5014                 if (nla_put_u8(msg, NL80211_RATE_INFO_VHT_NSS, info->nss))
5015                         return false;
5016                 if (info->flags & RATE_INFO_FLAGS_SHORT_GI &&
5017                     nla_put_flag(msg, NL80211_RATE_INFO_SHORT_GI))
5018                         return false;
5019         } else if (info->flags & RATE_INFO_FLAGS_HE_MCS) {
5020                 if (nla_put_u8(msg, NL80211_RATE_INFO_HE_MCS, info->mcs))
5021                         return false;
5022                 if (nla_put_u8(msg, NL80211_RATE_INFO_HE_NSS, info->nss))
5023                         return false;
5024                 if (nla_put_u8(msg, NL80211_RATE_INFO_HE_GI, info->he_gi))
5025                         return false;
5026                 if (nla_put_u8(msg, NL80211_RATE_INFO_HE_DCM, info->he_dcm))
5027                         return false;
5028                 if (info->bw == RATE_INFO_BW_HE_RU &&
5029                     nla_put_u8(msg, NL80211_RATE_INFO_HE_RU_ALLOC,
5030                                info->he_ru_alloc))
5031                         return false;
5032         }
5033
5034         nla_nest_end(msg, rate);
5035         return true;
5036 }
5037
5038 static bool nl80211_put_signal(struct sk_buff *msg, u8 mask, s8 *signal,
5039                                int id)
5040 {
5041         void *attr;
5042         int i = 0;
5043
5044         if (!mask)
5045                 return true;
5046
5047         attr = nla_nest_start_noflag(msg, id);
5048         if (!attr)
5049                 return false;
5050
5051         for (i = 0; i < IEEE80211_MAX_CHAINS; i++) {
5052                 if (!(mask & BIT(i)))
5053                         continue;
5054
5055                 if (nla_put_u8(msg, i, signal[i]))
5056                         return false;
5057         }
5058
5059         nla_nest_end(msg, attr);
5060
5061         return true;
5062 }
5063
5064 static int nl80211_send_station(struct sk_buff *msg, u32 cmd, u32 portid,
5065                                 u32 seq, int flags,
5066                                 struct cfg80211_registered_device *rdev,
5067                                 struct net_device *dev,
5068                                 const u8 *mac_addr, struct station_info *sinfo)
5069 {
5070         void *hdr;
5071         struct nlattr *sinfoattr, *bss_param;
5072
5073         hdr = nl80211hdr_put(msg, portid, seq, flags, cmd);
5074         if (!hdr) {
5075                 cfg80211_sinfo_release_content(sinfo);
5076                 return -1;
5077         }
5078
5079         if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
5080             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, mac_addr) ||
5081             nla_put_u32(msg, NL80211_ATTR_GENERATION, sinfo->generation))
5082                 goto nla_put_failure;
5083
5084         sinfoattr = nla_nest_start_noflag(msg, NL80211_ATTR_STA_INFO);
5085         if (!sinfoattr)
5086                 goto nla_put_failure;
5087
5088 #define PUT_SINFO(attr, memb, type) do {                                \
5089         BUILD_BUG_ON(sizeof(type) == sizeof(u64));                      \
5090         if (sinfo->filled & BIT_ULL(NL80211_STA_INFO_ ## attr) &&       \
5091             nla_put_ ## type(msg, NL80211_STA_INFO_ ## attr,            \
5092                              sinfo->memb))                              \
5093                 goto nla_put_failure;                                   \
5094         } while (0)
5095 #define PUT_SINFO_U64(attr, memb) do {                                  \
5096         if (sinfo->filled & BIT_ULL(NL80211_STA_INFO_ ## attr) &&       \
5097             nla_put_u64_64bit(msg, NL80211_STA_INFO_ ## attr,           \
5098                               sinfo->memb, NL80211_STA_INFO_PAD))       \
5099                 goto nla_put_failure;                                   \
5100         } while (0)
5101
5102         PUT_SINFO(CONNECTED_TIME, connected_time, u32);
5103         PUT_SINFO(INACTIVE_TIME, inactive_time, u32);
5104         PUT_SINFO_U64(ASSOC_AT_BOOTTIME, assoc_at);
5105
5106         if (sinfo->filled & (BIT_ULL(NL80211_STA_INFO_RX_BYTES) |
5107                              BIT_ULL(NL80211_STA_INFO_RX_BYTES64)) &&
5108             nla_put_u32(msg, NL80211_STA_INFO_RX_BYTES,
5109                         (u32)sinfo->rx_bytes))
5110                 goto nla_put_failure;
5111
5112         if (sinfo->filled & (BIT_ULL(NL80211_STA_INFO_TX_BYTES) |
5113                              BIT_ULL(NL80211_STA_INFO_TX_BYTES64)) &&
5114             nla_put_u32(msg, NL80211_STA_INFO_TX_BYTES,
5115                         (u32)sinfo->tx_bytes))
5116                 goto nla_put_failure;
5117
5118         PUT_SINFO_U64(RX_BYTES64, rx_bytes);
5119         PUT_SINFO_U64(TX_BYTES64, tx_bytes);
5120         PUT_SINFO(LLID, llid, u16);
5121         PUT_SINFO(PLID, plid, u16);
5122         PUT_SINFO(PLINK_STATE, plink_state, u8);
5123         PUT_SINFO_U64(RX_DURATION, rx_duration);
5124         PUT_SINFO_U64(TX_DURATION, tx_duration);
5125
5126         if (wiphy_ext_feature_isset(&rdev->wiphy,
5127                                     NL80211_EXT_FEATURE_AIRTIME_FAIRNESS))
5128                 PUT_SINFO(AIRTIME_WEIGHT, airtime_weight, u16);
5129
5130         switch (rdev->wiphy.signal_type) {
5131         case CFG80211_SIGNAL_TYPE_MBM:
5132                 PUT_SINFO(SIGNAL, signal, u8);
5133                 PUT_SINFO(SIGNAL_AVG, signal_avg, u8);
5134                 break;
5135         default:
5136                 break;
5137         }
5138         if (sinfo->filled & BIT_ULL(NL80211_STA_INFO_CHAIN_SIGNAL)) {
5139                 if (!nl80211_put_signal(msg, sinfo->chains,
5140                                         sinfo->chain_signal,
5141                                         NL80211_STA_INFO_CHAIN_SIGNAL))
5142                         goto nla_put_failure;
5143         }
5144         if (sinfo->filled & BIT_ULL(NL80211_STA_INFO_CHAIN_SIGNAL_AVG)) {
5145                 if (!nl80211_put_signal(msg, sinfo->chains,
5146                                         sinfo->chain_signal_avg,
5147                                         NL80211_STA_INFO_CHAIN_SIGNAL_AVG))
5148                         goto nla_put_failure;
5149         }
5150         if (sinfo->filled & BIT_ULL(NL80211_STA_INFO_TX_BITRATE)) {
5151                 if (!nl80211_put_sta_rate(msg, &sinfo->txrate,
5152                                           NL80211_STA_INFO_TX_BITRATE))
5153                         goto nla_put_failure;
5154         }
5155         if (sinfo->filled & BIT_ULL(NL80211_STA_INFO_RX_BITRATE)) {
5156                 if (!nl80211_put_sta_rate(msg, &sinfo->rxrate,
5157                                           NL80211_STA_INFO_RX_BITRATE))
5158                         goto nla_put_failure;
5159         }
5160
5161         PUT_SINFO(RX_PACKETS, rx_packets, u32);
5162         PUT_SINFO(TX_PACKETS, tx_packets, u32);
5163         PUT_SINFO(TX_RETRIES, tx_retries, u32);
5164         PUT_SINFO(TX_FAILED, tx_failed, u32);
5165         PUT_SINFO(EXPECTED_THROUGHPUT, expected_throughput, u32);
5166         PUT_SINFO(AIRTIME_LINK_METRIC, airtime_link_metric, u32);
5167         PUT_SINFO(BEACON_LOSS, beacon_loss_count, u32);
5168         PUT_SINFO(LOCAL_PM, local_pm, u32);
5169         PUT_SINFO(PEER_PM, peer_pm, u32);
5170         PUT_SINFO(NONPEER_PM, nonpeer_pm, u32);
5171         PUT_SINFO(CONNECTED_TO_GATE, connected_to_gate, u8);
5172
5173         if (sinfo->filled & BIT_ULL(NL80211_STA_INFO_BSS_PARAM)) {
5174                 bss_param = nla_nest_start_noflag(msg,
5175                                                   NL80211_STA_INFO_BSS_PARAM);
5176                 if (!bss_param)
5177                         goto nla_put_failure;
5178
5179                 if (((sinfo->bss_param.flags & BSS_PARAM_FLAGS_CTS_PROT) &&
5180                      nla_put_flag(msg, NL80211_STA_BSS_PARAM_CTS_PROT)) ||
5181                     ((sinfo->bss_param.flags & BSS_PARAM_FLAGS_SHORT_PREAMBLE) &&
5182                      nla_put_flag(msg, NL80211_STA_BSS_PARAM_SHORT_PREAMBLE)) ||
5183                     ((sinfo->bss_param.flags & BSS_PARAM_FLAGS_SHORT_SLOT_TIME) &&
5184                      nla_put_flag(msg, NL80211_STA_BSS_PARAM_SHORT_SLOT_TIME)) ||
5185                     nla_put_u8(msg, NL80211_STA_BSS_PARAM_DTIM_PERIOD,
5186                                sinfo->bss_param.dtim_period) ||
5187                     nla_put_u16(msg, NL80211_STA_BSS_PARAM_BEACON_INTERVAL,
5188                                 sinfo->bss_param.beacon_interval))
5189                         goto nla_put_failure;
5190
5191                 nla_nest_end(msg, bss_param);
5192         }
5193         if ((sinfo->filled & BIT_ULL(NL80211_STA_INFO_STA_FLAGS)) &&
5194             nla_put(msg, NL80211_STA_INFO_STA_FLAGS,
5195                     sizeof(struct nl80211_sta_flag_update),
5196                     &sinfo->sta_flags))
5197                 goto nla_put_failure;
5198
5199         PUT_SINFO_U64(T_OFFSET, t_offset);
5200         PUT_SINFO_U64(RX_DROP_MISC, rx_dropped_misc);
5201         PUT_SINFO_U64(BEACON_RX, rx_beacon);
5202         PUT_SINFO(BEACON_SIGNAL_AVG, rx_beacon_signal_avg, u8);
5203         PUT_SINFO(RX_MPDUS, rx_mpdu_count, u32);
5204         PUT_SINFO(FCS_ERROR_COUNT, fcs_err_count, u32);
5205         if (wiphy_ext_feature_isset(&rdev->wiphy,
5206                                     NL80211_EXT_FEATURE_ACK_SIGNAL_SUPPORT)) {
5207                 PUT_SINFO(ACK_SIGNAL, ack_signal, u8);
5208                 PUT_SINFO(ACK_SIGNAL_AVG, avg_ack_signal, s8);
5209         }
5210
5211 #undef PUT_SINFO
5212 #undef PUT_SINFO_U64
5213
5214         if (sinfo->pertid) {
5215                 struct nlattr *tidsattr;
5216                 int tid;
5217
5218                 tidsattr = nla_nest_start_noflag(msg,
5219                                                  NL80211_STA_INFO_TID_STATS);
5220                 if (!tidsattr)
5221                         goto nla_put_failure;
5222
5223                 for (tid = 0; tid < IEEE80211_NUM_TIDS + 1; tid++) {
5224                         struct cfg80211_tid_stats *tidstats;
5225                         struct nlattr *tidattr;
5226
5227                         tidstats = &sinfo->pertid[tid];
5228
5229                         if (!tidstats->filled)
5230                                 continue;
5231
5232                         tidattr = nla_nest_start_noflag(msg, tid + 1);
5233                         if (!tidattr)
5234                                 goto nla_put_failure;
5235
5236 #define PUT_TIDVAL_U64(attr, memb) do {                                 \
5237         if (tidstats->filled & BIT(NL80211_TID_STATS_ ## attr) &&       \
5238             nla_put_u64_64bit(msg, NL80211_TID_STATS_ ## attr,          \
5239                               tidstats->memb, NL80211_TID_STATS_PAD))   \
5240                 goto nla_put_failure;                                   \
5241         } while (0)
5242
5243                         PUT_TIDVAL_U64(RX_MSDU, rx_msdu);
5244                         PUT_TIDVAL_U64(TX_MSDU, tx_msdu);
5245                         PUT_TIDVAL_U64(TX_MSDU_RETRIES, tx_msdu_retries);
5246                         PUT_TIDVAL_U64(TX_MSDU_FAILED, tx_msdu_failed);
5247
5248 #undef PUT_TIDVAL_U64
5249                         if ((tidstats->filled &
5250                              BIT(NL80211_TID_STATS_TXQ_STATS)) &&
5251                             !nl80211_put_txq_stats(msg, &tidstats->txq_stats,
5252                                                    NL80211_TID_STATS_TXQ_STATS))
5253                                 goto nla_put_failure;
5254
5255                         nla_nest_end(msg, tidattr);
5256                 }
5257
5258                 nla_nest_end(msg, tidsattr);
5259         }
5260
5261         nla_nest_end(msg, sinfoattr);
5262
5263         if (sinfo->assoc_req_ies_len &&
5264             nla_put(msg, NL80211_ATTR_IE, sinfo->assoc_req_ies_len,
5265                     sinfo->assoc_req_ies))
5266                 goto nla_put_failure;
5267
5268         cfg80211_sinfo_release_content(sinfo);
5269         genlmsg_end(msg, hdr);
5270         return 0;
5271
5272  nla_put_failure:
5273         cfg80211_sinfo_release_content(sinfo);
5274         genlmsg_cancel(msg, hdr);
5275         return -EMSGSIZE;
5276 }
5277
5278 static int nl80211_dump_station(struct sk_buff *skb,
5279                                 struct netlink_callback *cb)
5280 {
5281         struct station_info sinfo;
5282         struct cfg80211_registered_device *rdev;
5283         struct wireless_dev *wdev;
5284         u8 mac_addr[ETH_ALEN];
5285         int sta_idx = cb->args[2];
5286         int err;
5287
5288         rtnl_lock();
5289         err = nl80211_prepare_wdev_dump(cb, &rdev, &wdev);
5290         if (err)
5291                 goto out_err;
5292
5293         if (!wdev->netdev) {
5294                 err = -EINVAL;
5295                 goto out_err;
5296         }
5297
5298         if (!rdev->ops->dump_station) {
5299                 err = -EOPNOTSUPP;
5300                 goto out_err;
5301         }
5302
5303         while (1) {
5304                 memset(&sinfo, 0, sizeof(sinfo));
5305                 err = rdev_dump_station(rdev, wdev->netdev, sta_idx,
5306                                         mac_addr, &sinfo);
5307                 if (err == -ENOENT)
5308                         break;
5309                 if (err)
5310                         goto out_err;
5311
5312                 if (nl80211_send_station(skb, NL80211_CMD_NEW_STATION,
5313                                 NETLINK_CB(cb->skb).portid,
5314                                 cb->nlh->nlmsg_seq, NLM_F_MULTI,
5315                                 rdev, wdev->netdev, mac_addr,
5316                                 &sinfo) < 0)
5317                         goto out;
5318
5319                 sta_idx++;
5320         }
5321
5322  out:
5323         cb->args[2] = sta_idx;
5324         err = skb->len;
5325  out_err:
5326         rtnl_unlock();
5327
5328         return err;
5329 }
5330
5331 static int nl80211_get_station(struct sk_buff *skb, struct genl_info *info)
5332 {
5333         struct cfg80211_registered_device *rdev = info->user_ptr[0];
5334         struct net_device *dev = info->user_ptr[1];
5335         struct station_info sinfo;
5336         struct sk_buff *msg;
5337         u8 *mac_addr = NULL;
5338         int err;
5339
5340         memset(&sinfo, 0, sizeof(sinfo));
5341
5342         if (!info->attrs[NL80211_ATTR_MAC])
5343                 return -EINVAL;
5344
5345         mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
5346
5347         if (!rdev->ops->get_station)
5348                 return -EOPNOTSUPP;
5349
5350         err = rdev_get_station(rdev, dev, mac_addr, &sinfo);
5351         if (err)
5352                 return err;
5353
5354         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
5355         if (!msg) {
5356                 cfg80211_sinfo_release_content(&sinfo);
5357                 return -ENOMEM;
5358         }
5359
5360         if (nl80211_send_station(msg, NL80211_CMD_NEW_STATION,
5361                                  info->snd_portid, info->snd_seq, 0,
5362                                  rdev, dev, mac_addr, &sinfo) < 0) {
5363                 nlmsg_free(msg);
5364                 return -ENOBUFS;
5365         }
5366
5367         return genlmsg_reply(msg, info);
5368 }
5369
5370 int cfg80211_check_station_change(struct wiphy *wiphy,
5371                                   struct station_parameters *params,
5372                                   enum cfg80211_station_type statype)
5373 {
5374         if (params->listen_interval != -1 &&
5375             statype != CFG80211_STA_AP_CLIENT_UNASSOC)
5376                 return -EINVAL;
5377
5378         if (params->support_p2p_ps != -1 &&
5379             statype != CFG80211_STA_AP_CLIENT_UNASSOC)
5380                 return -EINVAL;
5381
5382         if (params->aid &&
5383             !(params->sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)) &&
5384             statype != CFG80211_STA_AP_CLIENT_UNASSOC)
5385                 return -EINVAL;
5386
5387         /* When you run into this, adjust the code below for the new flag */
5388         BUILD_BUG_ON(NL80211_STA_FLAG_MAX != 7);
5389
5390         switch (statype) {
5391         case CFG80211_STA_MESH_PEER_KERNEL:
5392         case CFG80211_STA_MESH_PEER_USER:
5393                 /*
5394                  * No ignoring the TDLS flag here -- the userspace mesh
5395                  * code doesn't have the bug of including TDLS in the
5396                  * mask everywhere.
5397                  */
5398                 if (params->sta_flags_mask &
5399                                 ~(BIT(NL80211_STA_FLAG_AUTHENTICATED) |
5400                                   BIT(NL80211_STA_FLAG_MFP) |
5401                                   BIT(NL80211_STA_FLAG_AUTHORIZED)))
5402                         return -EINVAL;
5403                 break;
5404         case CFG80211_STA_TDLS_PEER_SETUP:
5405         case CFG80211_STA_TDLS_PEER_ACTIVE:
5406                 if (!(params->sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)))
5407                         return -EINVAL;
5408                 /* ignore since it can't change */
5409                 params->sta_flags_mask &= ~BIT(NL80211_STA_FLAG_TDLS_PEER);
5410                 break;
5411         default:
5412                 /* disallow mesh-specific things */
5413                 if (params->plink_action != NL80211_PLINK_ACTION_NO_ACTION)
5414                         return -EINVAL;
5415                 if (params->local_pm)
5416                         return -EINVAL;
5417                 if (params->sta_modify_mask & STATION_PARAM_APPLY_PLINK_STATE)
5418                         return -EINVAL;
5419         }
5420
5421         if (statype != CFG80211_STA_TDLS_PEER_SETUP &&
5422             statype != CFG80211_STA_TDLS_PEER_ACTIVE) {
5423                 /* TDLS can't be set, ... */
5424                 if (params->sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER))
5425                         return -EINVAL;
5426                 /*
5427                  * ... but don't bother the driver with it. This works around
5428                  * a hostapd/wpa_supplicant issue -- it always includes the
5429                  * TLDS_PEER flag in the mask even for AP mode.
5430                  */
5431                 params->sta_flags_mask &= ~BIT(NL80211_STA_FLAG_TDLS_PEER);
5432         }
5433
5434         if (statype != CFG80211_STA_TDLS_PEER_SETUP &&
5435             statype != CFG80211_STA_AP_CLIENT_UNASSOC) {
5436                 /* reject other things that can't change */
5437                 if (params->sta_modify_mask & STATION_PARAM_APPLY_UAPSD)
5438                         return -EINVAL;
5439                 if (params->sta_modify_mask & STATION_PARAM_APPLY_CAPABILITY)
5440                         return -EINVAL;
5441                 if (params->supported_rates)
5442                         return -EINVAL;
5443                 if (params->ext_capab || params->ht_capa || params->vht_capa ||
5444                     params->he_capa)
5445                         return -EINVAL;
5446         }
5447
5448         if (statype != CFG80211_STA_AP_CLIENT &&
5449             statype != CFG80211_STA_AP_CLIENT_UNASSOC) {
5450                 if (params->vlan)
5451                         return -EINVAL;
5452         }
5453
5454         switch (statype) {
5455         case CFG80211_STA_AP_MLME_CLIENT:
5456                 /* Use this only for authorizing/unauthorizing a station */
5457                 if (!(params->sta_flags_mask & BIT(NL80211_STA_FLAG_AUTHORIZED)))
5458                         return -EOPNOTSUPP;
5459                 break;
5460         case CFG80211_STA_AP_CLIENT:
5461         case CFG80211_STA_AP_CLIENT_UNASSOC:
5462                 /* accept only the listed bits */
5463                 if (params->sta_flags_mask &
5464                                 ~(BIT(NL80211_STA_FLAG_AUTHORIZED) |
5465                                   BIT(NL80211_STA_FLAG_AUTHENTICATED) |
5466                                   BIT(NL80211_STA_FLAG_ASSOCIATED) |
5467                                   BIT(NL80211_STA_FLAG_SHORT_PREAMBLE) |
5468                                   BIT(NL80211_STA_FLAG_WME) |
5469                                   BIT(NL80211_STA_FLAG_MFP)))
5470                         return -EINVAL;
5471
5472                 /* but authenticated/associated only if driver handles it */
5473                 if (!(wiphy->features & NL80211_FEATURE_FULL_AP_CLIENT_STATE) &&
5474                     params->sta_flags_mask &
5475                                 (BIT(NL80211_STA_FLAG_AUTHENTICATED) |
5476                                  BIT(NL80211_STA_FLAG_ASSOCIATED)))
5477                         return -EINVAL;
5478                 break;
5479         case CFG80211_STA_IBSS:
5480         case CFG80211_STA_AP_STA:
5481                 /* reject any changes other than AUTHORIZED */
5482                 if (params->sta_flags_mask & ~BIT(NL80211_STA_FLAG_AUTHORIZED))
5483                         return -EINVAL;
5484                 break;
5485         case CFG80211_STA_TDLS_PEER_SETUP:
5486                 /* reject any changes other than AUTHORIZED or WME */
5487                 if (params->sta_flags_mask & ~(BIT(NL80211_STA_FLAG_AUTHORIZED) |
5488                                                BIT(NL80211_STA_FLAG_WME)))
5489                         return -EINVAL;
5490                 /* force (at least) rates when authorizing */
5491                 if (params->sta_flags_set & BIT(NL80211_STA_FLAG_AUTHORIZED) &&
5492                     !params->supported_rates)
5493                         return -EINVAL;
5494                 break;
5495         case CFG80211_STA_TDLS_PEER_ACTIVE:
5496                 /* reject any changes */
5497                 return -EINVAL;
5498         case CFG80211_STA_MESH_PEER_KERNEL:
5499                 if (params->sta_modify_mask & STATION_PARAM_APPLY_PLINK_STATE)
5500                         return -EINVAL;
5501                 break;
5502         case CFG80211_STA_MESH_PEER_USER:
5503                 if (params->plink_action != NL80211_PLINK_ACTION_NO_ACTION &&
5504                     params->plink_action != NL80211_PLINK_ACTION_BLOCK)
5505                         return -EINVAL;
5506                 break;
5507         }
5508
5509         /*
5510          * Older kernel versions ignored this attribute entirely, so don't
5511          * reject attempts to update it but mark it as unused instead so the
5512          * driver won't look at the data.
5513          */
5514         if (statype != CFG80211_STA_AP_CLIENT_UNASSOC &&
5515             statype != CFG80211_STA_TDLS_PEER_SETUP)
5516                 params->opmode_notif_used = false;
5517
5518         return 0;
5519 }
5520 EXPORT_SYMBOL(cfg80211_check_station_change);
5521
5522 /*
5523  * Get vlan interface making sure it is running and on the right wiphy.
5524  */
5525 static struct net_device *get_vlan(struct genl_info *info,
5526                                    struct cfg80211_registered_device *rdev)
5527 {
5528         struct nlattr *vlanattr = info->attrs[NL80211_ATTR_STA_VLAN];
5529         struct net_device *v;
5530         int ret;
5531
5532         if (!vlanattr)
5533                 return NULL;
5534
5535         v = dev_get_by_index(genl_info_net(info), nla_get_u32(vlanattr));
5536         if (!v)
5537                 return ERR_PTR(-ENODEV);
5538
5539         if (!v->ieee80211_ptr || v->ieee80211_ptr->wiphy != &rdev->wiphy) {
5540                 ret = -EINVAL;
5541                 goto error;
5542         }
5543
5544         if (v->ieee80211_ptr->iftype != NL80211_IFTYPE_AP_VLAN &&
5545             v->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
5546             v->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO) {
5547                 ret = -EINVAL;
5548                 goto error;
5549         }
5550
5551         if (!netif_running(v)) {
5552                 ret = -ENETDOWN;
5553                 goto error;
5554         }
5555
5556         return v;
5557  error:
5558         dev_put(v);
5559         return ERR_PTR(ret);
5560 }
5561
5562 static const struct nla_policy
5563 nl80211_sta_wme_policy[NL80211_STA_WME_MAX + 1] = {
5564         [NL80211_STA_WME_UAPSD_QUEUES] = { .type = NLA_U8 },
5565         [NL80211_STA_WME_MAX_SP] = { .type = NLA_U8 },
5566 };
5567
5568 static int nl80211_parse_sta_wme(struct genl_info *info,
5569                                  struct station_parameters *params)
5570 {
5571         struct nlattr *tb[NL80211_STA_WME_MAX + 1];
5572         struct nlattr *nla;
5573         int err;
5574
5575         /* parse WME attributes if present */
5576         if (!info->attrs[NL80211_ATTR_STA_WME])
5577                 return 0;
5578
5579         nla = info->attrs[NL80211_ATTR_STA_WME];
5580         err = nla_parse_nested_deprecated(tb, NL80211_STA_WME_MAX, nla,
5581                                           nl80211_sta_wme_policy,
5582                                           info->extack);
5583         if (err)
5584                 return err;
5585
5586         if (tb[NL80211_STA_WME_UAPSD_QUEUES])
5587                 params->uapsd_queues = nla_get_u8(
5588                         tb[NL80211_STA_WME_UAPSD_QUEUES]);
5589         if (params->uapsd_queues & ~IEEE80211_WMM_IE_STA_QOSINFO_AC_MASK)
5590                 return -EINVAL;
5591
5592         if (tb[NL80211_STA_WME_MAX_SP])
5593                 params->max_sp = nla_get_u8(tb[NL80211_STA_WME_MAX_SP]);
5594
5595         if (params->max_sp & ~IEEE80211_WMM_IE_STA_QOSINFO_SP_MASK)
5596                 return -EINVAL;
5597
5598         params->sta_modify_mask |= STATION_PARAM_APPLY_UAPSD;
5599
5600         return 0;
5601 }
5602
5603 static int nl80211_parse_sta_channel_info(struct genl_info *info,
5604                                       struct station_parameters *params)
5605 {
5606         if (info->attrs[NL80211_ATTR_STA_SUPPORTED_CHANNELS]) {
5607                 params->supported_channels =
5608                      nla_data(info->attrs[NL80211_ATTR_STA_SUPPORTED_CHANNELS]);
5609                 params->supported_channels_len =
5610                      nla_len(info->attrs[NL80211_ATTR_STA_SUPPORTED_CHANNELS]);
5611                 /*
5612                  * Need to include at least one (first channel, number of
5613                  * channels) tuple for each subband, and must have proper
5614                  * tuples for the rest of the data as well.
5615                  */
5616                 if (params->supported_channels_len < 2)
5617                         return -EINVAL;
5618                 if (params->supported_channels_len % 2)
5619                         return -EINVAL;
5620         }
5621
5622         if (info->attrs[NL80211_ATTR_STA_SUPPORTED_OPER_CLASSES]) {
5623                 params->supported_oper_classes =
5624                  nla_data(info->attrs[NL80211_ATTR_STA_SUPPORTED_OPER_CLASSES]);
5625                 params->supported_oper_classes_len =
5626                   nla_len(info->attrs[NL80211_ATTR_STA_SUPPORTED_OPER_CLASSES]);
5627                 /*
5628                  * The value of the Length field of the Supported Operating
5629                  * Classes element is between 2 and 253.
5630                  */
5631                 if (params->supported_oper_classes_len < 2 ||
5632                     params->supported_oper_classes_len > 253)
5633                         return -EINVAL;
5634         }
5635         return 0;
5636 }
5637
5638 static int nl80211_set_station_tdls(struct genl_info *info,
5639                                     struct station_parameters *params)
5640 {
5641         int err;
5642         /* Dummy STA entry gets updated once the peer capabilities are known */
5643         if (info->attrs[NL80211_ATTR_PEER_AID])
5644                 params->aid = nla_get_u16(info->attrs[NL80211_ATTR_PEER_AID]);
5645         if (info->attrs[NL80211_ATTR_HT_CAPABILITY])
5646                 params->ht_capa =
5647                         nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]);
5648         if (info->attrs[NL80211_ATTR_VHT_CAPABILITY])
5649                 params->vht_capa =
5650                         nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY]);
5651         if (info->attrs[NL80211_ATTR_HE_CAPABILITY]) {
5652                 params->he_capa =
5653                         nla_data(info->attrs[NL80211_ATTR_HE_CAPABILITY]);
5654                 params->he_capa_len =
5655                         nla_len(info->attrs[NL80211_ATTR_HE_CAPABILITY]);
5656
5657                 if (params->he_capa_len < NL80211_HE_MIN_CAPABILITY_LEN)
5658                         return -EINVAL;
5659         }
5660
5661         err = nl80211_parse_sta_channel_info(info, params);
5662         if (err)
5663                 return err;
5664
5665         return nl80211_parse_sta_wme(info, params);
5666 }
5667
5668 static int nl80211_parse_sta_txpower_setting(struct genl_info *info,
5669                                              struct station_parameters *params)
5670 {
5671         struct cfg80211_registered_device *rdev = info->user_ptr[0];
5672         int idx;
5673
5674         if (info->attrs[NL80211_ATTR_STA_TX_POWER_SETTING]) {
5675                 if (!rdev->ops->set_tx_power ||
5676                     !wiphy_ext_feature_isset(&rdev->wiphy,
5677                                          NL80211_EXT_FEATURE_STA_TX_PWR))
5678                         return -EOPNOTSUPP;
5679
5680                 idx = NL80211_ATTR_STA_TX_POWER_SETTING;
5681                 params->txpwr.type = nla_get_u8(info->attrs[idx]);
5682
5683                 if (params->txpwr.type == NL80211_TX_POWER_LIMITED) {
5684                         idx = NL80211_ATTR_STA_TX_POWER;
5685
5686                         if (info->attrs[idx])
5687                                 params->txpwr.power =
5688                                         nla_get_s16(info->attrs[idx]);
5689                         else
5690                                 return -EINVAL;
5691                 }
5692                 params->sta_modify_mask |= STATION_PARAM_APPLY_STA_TXPOWER;
5693         }
5694
5695         return 0;
5696 }
5697
5698 static int nl80211_set_station(struct sk_buff *skb, struct genl_info *info)
5699 {
5700         struct cfg80211_registered_device *rdev = info->user_ptr[0];
5701         struct net_device *dev = info->user_ptr[1];
5702         struct station_parameters params;
5703         u8 *mac_addr;
5704         int err;
5705
5706         memset(&params, 0, sizeof(params));
5707
5708         if (!rdev->ops->change_station)
5709                 return -EOPNOTSUPP;
5710
5711         /*
5712          * AID and listen_interval properties can be set only for unassociated
5713          * station. Include these parameters here and will check them in
5714          * cfg80211_check_station_change().
5715          */
5716         if (info->attrs[NL80211_ATTR_STA_AID])
5717                 params.aid = nla_get_u16(info->attrs[NL80211_ATTR_STA_AID]);
5718
5719         if (info->attrs[NL80211_ATTR_VLAN_ID])
5720                 params.vlan_id = nla_get_u16(info->attrs[NL80211_ATTR_VLAN_ID]);
5721
5722         if (info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL])
5723                 params.listen_interval =
5724                      nla_get_u16(info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL]);
5725         else
5726                 params.listen_interval = -1;
5727
5728         if (info->attrs[NL80211_ATTR_STA_SUPPORT_P2P_PS])
5729                 params.support_p2p_ps =
5730                         nla_get_u8(info->attrs[NL80211_ATTR_STA_SUPPORT_P2P_PS]);
5731         else
5732                 params.support_p2p_ps = -1;
5733
5734         if (!info->attrs[NL80211_ATTR_MAC])
5735                 return -EINVAL;
5736
5737         mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
5738
5739         if (info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]) {
5740                 params.supported_rates =
5741                         nla_data(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
5742                 params.supported_rates_len =
5743                         nla_len(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
5744         }
5745
5746         if (info->attrs[NL80211_ATTR_STA_CAPABILITY]) {
5747                 params.capability =
5748                         nla_get_u16(info->attrs[NL80211_ATTR_STA_CAPABILITY]);
5749                 params.sta_modify_mask |= STATION_PARAM_APPLY_CAPABILITY;
5750         }
5751
5752         if (info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]) {
5753                 params.ext_capab =
5754                         nla_data(info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]);
5755                 params.ext_capab_len =
5756                         nla_len(info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]);
5757         }
5758
5759         if (parse_station_flags(info, dev->ieee80211_ptr->iftype, &params))
5760                 return -EINVAL;
5761
5762         if (info->attrs[NL80211_ATTR_STA_PLINK_ACTION])
5763                 params.plink_action =
5764                         nla_get_u8(info->attrs[NL80211_ATTR_STA_PLINK_ACTION]);
5765
5766         if (info->attrs[NL80211_ATTR_STA_PLINK_STATE]) {
5767                 params.plink_state =
5768                         nla_get_u8(info->attrs[NL80211_ATTR_STA_PLINK_STATE]);
5769                 if (info->attrs[NL80211_ATTR_MESH_PEER_AID])
5770                         params.peer_aid = nla_get_u16(
5771                                 info->attrs[NL80211_ATTR_MESH_PEER_AID]);
5772                 params.sta_modify_mask |= STATION_PARAM_APPLY_PLINK_STATE;
5773         }
5774
5775         if (info->attrs[NL80211_ATTR_LOCAL_MESH_POWER_MODE])
5776                 params.local_pm = nla_get_u32(
5777                         info->attrs[NL80211_ATTR_LOCAL_MESH_POWER_MODE]);
5778
5779         if (info->attrs[NL80211_ATTR_OPMODE_NOTIF]) {
5780                 params.opmode_notif_used = true;
5781                 params.opmode_notif =
5782                         nla_get_u8(info->attrs[NL80211_ATTR_OPMODE_NOTIF]);
5783         }
5784
5785         if (info->attrs[NL80211_ATTR_AIRTIME_WEIGHT])
5786                 params.airtime_weight =
5787                         nla_get_u16(info->attrs[NL80211_ATTR_AIRTIME_WEIGHT]);
5788
5789         if (params.airtime_weight &&
5790             !wiphy_ext_feature_isset(&rdev->wiphy,
5791                                      NL80211_EXT_FEATURE_AIRTIME_FAIRNESS))
5792                 return -EOPNOTSUPP;
5793
5794         err = nl80211_parse_sta_txpower_setting(info, &params);
5795         if (err)
5796                 return err;
5797
5798         /* Include parameters for TDLS peer (will check later) */
5799         err = nl80211_set_station_tdls(info, &params);
5800         if (err)
5801                 return err;
5802
5803         params.vlan = get_vlan(info, rdev);
5804         if (IS_ERR(params.vlan))
5805                 return PTR_ERR(params.vlan);
5806
5807         switch (dev->ieee80211_ptr->iftype) {
5808         case NL80211_IFTYPE_AP:
5809         case NL80211_IFTYPE_AP_VLAN:
5810         case NL80211_IFTYPE_P2P_GO:
5811         case NL80211_IFTYPE_P2P_CLIENT:
5812         case NL80211_IFTYPE_STATION:
5813         case NL80211_IFTYPE_ADHOC:
5814         case NL80211_IFTYPE_MESH_POINT:
5815                 break;
5816         default:
5817                 err = -EOPNOTSUPP;
5818                 goto out_put_vlan;
5819         }
5820
5821         /* driver will call cfg80211_check_station_change() */
5822         err = rdev_change_station(rdev, dev, mac_addr, &params);
5823
5824  out_put_vlan:
5825         if (params.vlan)
5826                 dev_put(params.vlan);
5827
5828         return err;
5829 }
5830
5831 static int nl80211_new_station(struct sk_buff *skb, struct genl_info *info)
5832 {
5833         struct cfg80211_registered_device *rdev = info->user_ptr[0];
5834         int err;
5835         struct net_device *dev = info->user_ptr[1];
5836         struct station_parameters params;
5837         u8 *mac_addr = NULL;
5838         u32 auth_assoc = BIT(NL80211_STA_FLAG_AUTHENTICATED) |
5839                          BIT(NL80211_STA_FLAG_ASSOCIATED);
5840
5841         memset(&params, 0, sizeof(params));
5842
5843         if (!rdev->ops->add_station)
5844                 return -EOPNOTSUPP;
5845
5846         if (!info->attrs[NL80211_ATTR_MAC])
5847                 return -EINVAL;
5848
5849         if (!info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL])
5850                 return -EINVAL;
5851
5852         if (!info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES])
5853                 return -EINVAL;
5854
5855         if (!info->attrs[NL80211_ATTR_STA_AID] &&
5856             !info->attrs[NL80211_ATTR_PEER_AID])
5857                 return -EINVAL;
5858
5859         mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
5860         params.supported_rates =
5861                 nla_data(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
5862         params.supported_rates_len =
5863                 nla_len(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
5864         params.listen_interval =
5865                 nla_get_u16(info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL]);
5866
5867         if (info->attrs[NL80211_ATTR_VLAN_ID])
5868                 params.vlan_id = nla_get_u16(info->attrs[NL80211_ATTR_VLAN_ID]);
5869
5870         if (info->attrs[NL80211_ATTR_STA_SUPPORT_P2P_PS]) {
5871                 params.support_p2p_ps =
5872                         nla_get_u8(info->attrs[NL80211_ATTR_STA_SUPPORT_P2P_PS]);
5873         } else {
5874                 /*
5875                  * if not specified, assume it's supported for P2P GO interface,
5876                  * and is NOT supported for AP interface
5877                  */
5878                 params.support_p2p_ps =
5879                         dev->ieee80211_ptr->iftype == NL80211_IFTYPE_P2P_GO;
5880         }
5881
5882         if (info->attrs[NL80211_ATTR_PEER_AID])
5883                 params.aid = nla_get_u16(info->attrs[NL80211_ATTR_PEER_AID]);
5884         else
5885                 params.aid = nla_get_u16(info->attrs[NL80211_ATTR_STA_AID]);
5886
5887         if (info->attrs[NL80211_ATTR_STA_CAPABILITY]) {
5888                 params.capability =
5889                         nla_get_u16(info->attrs[NL80211_ATTR_STA_CAPABILITY]);
5890                 params.sta_modify_mask |= STATION_PARAM_APPLY_CAPABILITY;
5891         }
5892
5893         if (info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]) {
5894                 params.ext_capab =
5895                         nla_data(info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]);
5896                 params.ext_capab_len =
5897                         nla_len(info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]);
5898         }
5899
5900         if (info->attrs[NL80211_ATTR_HT_CAPABILITY])
5901                 params.ht_capa =
5902                         nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]);
5903
5904         if (info->attrs[NL80211_ATTR_VHT_CAPABILITY])
5905                 params.vht_capa =
5906                         nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY]);
5907
5908         if (info->attrs[NL80211_ATTR_HE_CAPABILITY]) {
5909                 params.he_capa =
5910                         nla_data(info->attrs[NL80211_ATTR_HE_CAPABILITY]);
5911                 params.he_capa_len =
5912                         nla_len(info->attrs[NL80211_ATTR_HE_CAPABILITY]);
5913
5914                 /* max len is validated in nla policy */
5915                 if (params.he_capa_len < NL80211_HE_MIN_CAPABILITY_LEN)
5916                         return -EINVAL;
5917         }
5918
5919         if (info->attrs[NL80211_ATTR_OPMODE_NOTIF]) {
5920                 params.opmode_notif_used = true;
5921                 params.opmode_notif =
5922                         nla_get_u8(info->attrs[NL80211_ATTR_OPMODE_NOTIF]);
5923         }
5924
5925         if (info->attrs[NL80211_ATTR_STA_PLINK_ACTION])
5926                 params.plink_action =
5927                         nla_get_u8(info->attrs[NL80211_ATTR_STA_PLINK_ACTION]);
5928
5929         if (info->attrs[NL80211_ATTR_AIRTIME_WEIGHT])
5930                 params.airtime_weight =
5931                         nla_get_u16(info->attrs[NL80211_ATTR_AIRTIME_WEIGHT]);
5932
5933         if (params.airtime_weight &&
5934             !wiphy_ext_feature_isset(&rdev->wiphy,
5935                                      NL80211_EXT_FEATURE_AIRTIME_FAIRNESS))
5936                 return -EOPNOTSUPP;
5937
5938         err = nl80211_parse_sta_txpower_setting(info, &params);
5939         if (err)
5940                 return err;
5941
5942         err = nl80211_parse_sta_channel_info(info, &params);
5943         if (err)
5944                 return err;
5945
5946         err = nl80211_parse_sta_wme(info, &params);
5947         if (err)
5948                 return err;
5949
5950         if (parse_station_flags(info, dev->ieee80211_ptr->iftype, &params))
5951                 return -EINVAL;
5952
5953         /* HT/VHT requires QoS, but if we don't have that just ignore HT/VHT
5954          * as userspace might just pass through the capabilities from the IEs
5955          * directly, rather than enforcing this restriction and returning an
5956          * error in this case.
5957          */
5958         if (!(params.sta_flags_set & BIT(NL80211_STA_FLAG_WME))) {
5959                 params.ht_capa = NULL;
5960                 params.vht_capa = NULL;
5961
5962                 /* HE requires WME */
5963                 if (params.he_capa_len)
5964                         return -EINVAL;
5965         }
5966
5967         /* When you run into this, adjust the code below for the new flag */
5968         BUILD_BUG_ON(NL80211_STA_FLAG_MAX != 7);
5969
5970         switch (dev->ieee80211_ptr->iftype) {
5971         case NL80211_IFTYPE_AP:
5972         case NL80211_IFTYPE_AP_VLAN:
5973         case NL80211_IFTYPE_P2P_GO:
5974                 /* ignore WME attributes if iface/sta is not capable */
5975                 if (!(rdev->wiphy.flags & WIPHY_FLAG_AP_UAPSD) ||
5976                     !(params.sta_flags_set & BIT(NL80211_STA_FLAG_WME)))
5977                         params.sta_modify_mask &= ~STATION_PARAM_APPLY_UAPSD;
5978
5979                 /* TDLS peers cannot be added */
5980                 if ((params.sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)) ||
5981                     info->attrs[NL80211_ATTR_PEER_AID])
5982                         return -EINVAL;
5983                 /* but don't bother the driver with it */
5984                 params.sta_flags_mask &= ~BIT(NL80211_STA_FLAG_TDLS_PEER);
5985
5986                 /* allow authenticated/associated only if driver handles it */
5987                 if (!(rdev->wiphy.features &
5988                                 NL80211_FEATURE_FULL_AP_CLIENT_STATE) &&
5989                     params.sta_flags_mask & auth_assoc)
5990                         return -EINVAL;
5991
5992                 /* Older userspace, or userspace wanting to be compatible with
5993                  * !NL80211_FEATURE_FULL_AP_CLIENT_STATE, will not set the auth
5994                  * and assoc flags in the mask, but assumes the station will be
5995                  * added as associated anyway since this was the required driver
5996                  * behaviour before NL80211_FEATURE_FULL_AP_CLIENT_STATE was
5997                  * introduced.
5998                  * In order to not bother drivers with this quirk in the API
5999                  * set the flags in both the mask and set for new stations in
6000                  * this case.
6001                  */
6002                 if (!(params.sta_flags_mask & auth_assoc)) {
6003                         params.sta_flags_mask |= auth_assoc;
6004                         params.sta_flags_set |= auth_assoc;
6005                 }
6006
6007                 /* must be last in here for error handling */
6008                 params.vlan = get_vlan(info, rdev);
6009                 if (IS_ERR(params.vlan))
6010                         return PTR_ERR(params.vlan);
6011                 break;
6012         case NL80211_IFTYPE_MESH_POINT:
6013                 /* ignore uAPSD data */
6014                 params.sta_modify_mask &= ~STATION_PARAM_APPLY_UAPSD;
6015
6016                 /* associated is disallowed */
6017                 if (params.sta_flags_mask & BIT(NL80211_STA_FLAG_ASSOCIATED))
6018                         return -EINVAL;
6019                 /* TDLS peers cannot be added */
6020                 if ((params.sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)) ||
6021                     info->attrs[NL80211_ATTR_PEER_AID])
6022                         return -EINVAL;
6023                 break;
6024         case NL80211_IFTYPE_STATION:
6025         case NL80211_IFTYPE_P2P_CLIENT:
6026                 /* ignore uAPSD data */
6027                 params.sta_modify_mask &= ~STATION_PARAM_APPLY_UAPSD;
6028
6029                 /* these are disallowed */
6030                 if (params.sta_flags_mask &
6031                                 (BIT(NL80211_STA_FLAG_ASSOCIATED) |
6032                                  BIT(NL80211_STA_FLAG_AUTHENTICATED)))
6033                         return -EINVAL;
6034                 /* Only TDLS peers can be added */
6035                 if (!(params.sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)))
6036                         return -EINVAL;
6037                 /* Can only add if TDLS ... */
6038                 if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS))
6039                         return -EOPNOTSUPP;
6040                 /* ... with external setup is supported */
6041                 if (!(rdev->wiphy.flags & WIPHY_FLAG_TDLS_EXTERNAL_SETUP))
6042                         return -EOPNOTSUPP;
6043                 /*
6044                  * Older wpa_supplicant versions always mark the TDLS peer
6045                  * as authorized, but it shouldn't yet be.
6046                  */
6047                 params.sta_flags_mask &= ~BIT(NL80211_STA_FLAG_AUTHORIZED);
6048                 break;
6049         default:
6050                 return -EOPNOTSUPP;
6051         }
6052
6053         /* be aware of params.vlan when changing code here */
6054
6055         err = rdev_add_station(rdev, dev, mac_addr, &params);
6056
6057         if (params.vlan)
6058                 dev_put(params.vlan);
6059         return err;
6060 }
6061
6062 static int nl80211_del_station(struct sk_buff *skb, struct genl_info *info)
6063 {
6064         struct cfg80211_registered_device *rdev = info->user_ptr[0];
6065         struct net_device *dev = info->user_ptr[1];
6066         struct station_del_parameters params;
6067
6068         memset(&params, 0, sizeof(params));
6069
6070         if (info->attrs[NL80211_ATTR_MAC])
6071                 params.mac = nla_data(info->attrs[NL80211_ATTR_MAC]);
6072
6073         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
6074             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP_VLAN &&
6075             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT &&
6076             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
6077                 return -EINVAL;
6078
6079         if (!rdev->ops->del_station)
6080                 return -EOPNOTSUPP;
6081
6082         if (info->attrs[NL80211_ATTR_MGMT_SUBTYPE]) {
6083                 params.subtype =
6084                         nla_get_u8(info->attrs[NL80211_ATTR_MGMT_SUBTYPE]);
6085                 if (params.subtype != IEEE80211_STYPE_DISASSOC >> 4 &&
6086                     params.subtype != IEEE80211_STYPE_DEAUTH >> 4)
6087                         return -EINVAL;
6088         } else {
6089                 /* Default to Deauthentication frame */
6090                 params.subtype = IEEE80211_STYPE_DEAUTH >> 4;
6091         }
6092
6093         if (info->attrs[NL80211_ATTR_REASON_CODE]) {
6094                 params.reason_code =
6095                         nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]);
6096                 if (params.reason_code == 0)
6097                         return -EINVAL; /* 0 is reserved */
6098         } else {
6099                 /* Default to reason code 2 */
6100                 params.reason_code = WLAN_REASON_PREV_AUTH_NOT_VALID;
6101         }
6102
6103         return rdev_del_station(rdev, dev, &params);
6104 }
6105
6106 static int nl80211_send_mpath(struct sk_buff *msg, u32 portid, u32 seq,
6107                                 int flags, struct net_device *dev,
6108                                 u8 *dst, u8 *next_hop,
6109                                 struct mpath_info *pinfo)
6110 {
6111         void *hdr;
6112         struct nlattr *pinfoattr;
6113
6114         hdr = nl80211hdr_put(msg, portid, seq, flags, NL80211_CMD_NEW_MPATH);
6115         if (!hdr)
6116                 return -1;
6117
6118         if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
6119             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, dst) ||
6120             nla_put(msg, NL80211_ATTR_MPATH_NEXT_HOP, ETH_ALEN, next_hop) ||
6121             nla_put_u32(msg, NL80211_ATTR_GENERATION, pinfo->generation))
6122                 goto nla_put_failure;
6123
6124         pinfoattr = nla_nest_start_noflag(msg, NL80211_ATTR_MPATH_INFO);
6125         if (!pinfoattr)
6126                 goto nla_put_failure;
6127         if ((pinfo->filled & MPATH_INFO_FRAME_QLEN) &&
6128             nla_put_u32(msg, NL80211_MPATH_INFO_FRAME_QLEN,
6129                         pinfo->frame_qlen))
6130                 goto nla_put_failure;
6131         if (((pinfo->filled & MPATH_INFO_SN) &&
6132              nla_put_u32(msg, NL80211_MPATH_INFO_SN, pinfo->sn)) ||
6133             ((pinfo->filled & MPATH_INFO_METRIC) &&
6134              nla_put_u32(msg, NL80211_MPATH_INFO_METRIC,
6135                          pinfo->metric)) ||
6136             ((pinfo->filled & MPATH_INFO_EXPTIME) &&
6137              nla_put_u32(msg, NL80211_MPATH_INFO_EXPTIME,
6138                          pinfo->exptime)) ||
6139             ((pinfo->filled & MPATH_INFO_FLAGS) &&
6140              nla_put_u8(msg, NL80211_MPATH_INFO_FLAGS,
6141                         pinfo->flags)) ||
6142             ((pinfo->filled & MPATH_INFO_DISCOVERY_TIMEOUT) &&
6143              nla_put_u32(msg, NL80211_MPATH_INFO_DISCOVERY_TIMEOUT,
6144                          pinfo->discovery_timeout)) ||
6145             ((pinfo->filled & MPATH_INFO_DISCOVERY_RETRIES) &&
6146              nla_put_u8(msg, NL80211_MPATH_INFO_DISCOVERY_RETRIES,
6147                         pinfo->discovery_retries)) ||
6148             ((pinfo->filled & MPATH_INFO_HOP_COUNT) &&
6149              nla_put_u8(msg, NL80211_MPATH_INFO_HOP_COUNT,
6150                         pinfo->hop_count)) ||
6151             ((pinfo->filled & MPATH_INFO_PATH_CHANGE) &&
6152              nla_put_u32(msg, NL80211_MPATH_INFO_PATH_CHANGE,
6153                          pinfo->path_change_count)))
6154                 goto nla_put_failure;
6155
6156         nla_nest_end(msg, pinfoattr);
6157
6158         genlmsg_end(msg, hdr);
6159         return 0;
6160
6161  nla_put_failure:
6162         genlmsg_cancel(msg, hdr);
6163         return -EMSGSIZE;
6164 }
6165
6166 static int nl80211_dump_mpath(struct sk_buff *skb,
6167                               struct netlink_callback *cb)
6168 {
6169         struct mpath_info pinfo;
6170         struct cfg80211_registered_device *rdev;
6171         struct wireless_dev *wdev;
6172         u8 dst[ETH_ALEN];
6173         u8 next_hop[ETH_ALEN];
6174         int path_idx = cb->args[2];
6175         int err;
6176
6177         rtnl_lock();
6178         err = nl80211_prepare_wdev_dump(cb, &rdev, &wdev);
6179         if (err)
6180                 goto out_err;
6181
6182         if (!rdev->ops->dump_mpath) {
6183                 err = -EOPNOTSUPP;
6184                 goto out_err;
6185         }
6186
6187         if (wdev->iftype != NL80211_IFTYPE_MESH_POINT) {
6188                 err = -EOPNOTSUPP;
6189                 goto out_err;
6190         }
6191
6192         while (1) {
6193                 err = rdev_dump_mpath(rdev, wdev->netdev, path_idx, dst,
6194                                       next_hop, &pinfo);
6195                 if (err == -ENOENT)
6196                         break;
6197                 if (err)
6198                         goto out_err;
6199
6200                 if (nl80211_send_mpath(skb, NETLINK_CB(cb->skb).portid,
6201                                        cb->nlh->nlmsg_seq, NLM_F_MULTI,
6202                                        wdev->netdev, dst, next_hop,
6203                                        &pinfo) < 0)
6204                         goto out;
6205
6206                 path_idx++;
6207         }
6208
6209  out:
6210         cb->args[2] = path_idx;
6211         err = skb->len;
6212  out_err:
6213         rtnl_unlock();
6214         return err;
6215 }
6216
6217 static int nl80211_get_mpath(struct sk_buff *skb, struct genl_info *info)
6218 {
6219         struct cfg80211_registered_device *rdev = info->user_ptr[0];
6220         int err;
6221         struct net_device *dev = info->user_ptr[1];
6222         struct mpath_info pinfo;
6223         struct sk_buff *msg;
6224         u8 *dst = NULL;
6225         u8 next_hop[ETH_ALEN];
6226
6227         memset(&pinfo, 0, sizeof(pinfo));
6228
6229         if (!info->attrs[NL80211_ATTR_MAC])
6230                 return -EINVAL;
6231
6232         dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
6233
6234         if (!rdev->ops->get_mpath)
6235                 return -EOPNOTSUPP;
6236
6237         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT)
6238                 return -EOPNOTSUPP;
6239
6240         err = rdev_get_mpath(rdev, dev, dst, next_hop, &pinfo);
6241         if (err)
6242                 return err;
6243
6244         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
6245         if (!msg)
6246                 return -ENOMEM;
6247
6248         if (nl80211_send_mpath(msg, info->snd_portid, info->snd_seq, 0,
6249                                  dev, dst, next_hop, &pinfo) < 0) {
6250                 nlmsg_free(msg);
6251                 return -ENOBUFS;
6252         }
6253
6254         return genlmsg_reply(msg, info);
6255 }
6256
6257 static int nl80211_set_mpath(struct sk_buff *skb, struct genl_info *info)
6258 {
6259         struct cfg80211_registered_device *rdev = info->user_ptr[0];
6260         struct net_device *dev = info->user_ptr[1];
6261         u8 *dst = NULL;
6262         u8 *next_hop = NULL;
6263
6264         if (!info->attrs[NL80211_ATTR_MAC])
6265                 return -EINVAL;
6266
6267         if (!info->attrs[NL80211_ATTR_MPATH_NEXT_HOP])
6268                 return -EINVAL;
6269
6270         dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
6271         next_hop = nla_data(info->attrs[NL80211_ATTR_MPATH_NEXT_HOP]);
6272
6273         if (!rdev->ops->change_mpath)
6274                 return -EOPNOTSUPP;
6275
6276         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT)
6277                 return -EOPNOTSUPP;
6278
6279         return rdev_change_mpath(rdev, dev, dst, next_hop);
6280 }
6281
6282 static int nl80211_new_mpath(struct sk_buff *skb, struct genl_info *info)
6283 {
6284         struct cfg80211_registered_device *rdev = info->user_ptr[0];
6285         struct net_device *dev = info->user_ptr[1];
6286         u8 *dst = NULL;
6287         u8 *next_hop = NULL;
6288
6289         if (!info->attrs[NL80211_ATTR_MAC])
6290                 return -EINVAL;
6291
6292         if (!info->attrs[NL80211_ATTR_MPATH_NEXT_HOP])
6293                 return -EINVAL;
6294
6295         dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
6296         next_hop = nla_data(info->attrs[NL80211_ATTR_MPATH_NEXT_HOP]);
6297
6298         if (!rdev->ops->add_mpath)
6299                 return -EOPNOTSUPP;
6300
6301         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT)
6302                 return -EOPNOTSUPP;
6303
6304         return rdev_add_mpath(rdev, dev, dst, next_hop);
6305 }
6306
6307 static int nl80211_del_mpath(struct sk_buff *skb, struct genl_info *info)
6308 {
6309         struct cfg80211_registered_device *rdev = info->user_ptr[0];
6310         struct net_device *dev = info->user_ptr[1];
6311         u8 *dst = NULL;
6312
6313         if (info->attrs[NL80211_ATTR_MAC])
6314                 dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
6315
6316         if (!rdev->ops->del_mpath)
6317                 return -EOPNOTSUPP;
6318
6319         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT)
6320                 return -EOPNOTSUPP;
6321
6322         return rdev_del_mpath(rdev, dev, dst);
6323 }
6324
6325 static int nl80211_get_mpp(struct sk_buff *skb, struct genl_info *info)
6326 {
6327         struct cfg80211_registered_device *rdev = info->user_ptr[0];
6328         int err;
6329         struct net_device *dev = info->user_ptr[1];
6330         struct mpath_info pinfo;
6331         struct sk_buff *msg;
6332         u8 *dst = NULL;
6333         u8 mpp[ETH_ALEN];
6334
6335         memset(&pinfo, 0, sizeof(pinfo));
6336
6337         if (!info->attrs[NL80211_ATTR_MAC])
6338                 return -EINVAL;
6339
6340         dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
6341
6342         if (!rdev->ops->get_mpp)
6343                 return -EOPNOTSUPP;
6344
6345         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT)
6346                 return -EOPNOTSUPP;
6347
6348         err = rdev_get_mpp(rdev, dev, dst, mpp, &pinfo);
6349         if (err)
6350                 return err;
6351
6352         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
6353         if (!msg)
6354                 return -ENOMEM;
6355
6356         if (nl80211_send_mpath(msg, info->snd_portid, info->snd_seq, 0,
6357                                dev, dst, mpp, &pinfo) < 0) {
6358                 nlmsg_free(msg);
6359                 return -ENOBUFS;
6360         }
6361
6362         return genlmsg_reply(msg, info);
6363 }
6364
6365 static int nl80211_dump_mpp(struct sk_buff *skb,
6366                             struct netlink_callback *cb)
6367 {
6368         struct mpath_info pinfo;
6369         struct cfg80211_registered_device *rdev;
6370         struct wireless_dev *wdev;
6371         u8 dst[ETH_ALEN];
6372         u8 mpp[ETH_ALEN];
6373         int path_idx = cb->args[2];
6374         int err;
6375
6376         rtnl_lock();
6377         err = nl80211_prepare_wdev_dump(cb, &rdev, &wdev);
6378         if (err)
6379                 goto out_err;
6380
6381         if (!rdev->ops->dump_mpp) {
6382                 err = -EOPNOTSUPP;
6383                 goto out_err;
6384         }
6385
6386         if (wdev->iftype != NL80211_IFTYPE_MESH_POINT) {
6387                 err = -EOPNOTSUPP;
6388                 goto out_err;
6389         }
6390
6391         while (1) {
6392                 err = rdev_dump_mpp(rdev, wdev->netdev, path_idx, dst,
6393                                     mpp, &pinfo);
6394                 if (err == -ENOENT)
6395                         break;
6396                 if (err)
6397                         goto out_err;
6398
6399                 if (nl80211_send_mpath(skb, NETLINK_CB(cb->skb).portid,
6400                                        cb->nlh->nlmsg_seq, NLM_F_MULTI,
6401                                        wdev->netdev, dst, mpp,
6402                                        &pinfo) < 0)
6403                         goto out;
6404
6405                 path_idx++;
6406         }
6407
6408  out:
6409         cb->args[2] = path_idx;
6410         err = skb->len;
6411  out_err:
6412         rtnl_unlock();
6413         return err;
6414 }
6415
6416 static int nl80211_set_bss(struct sk_buff *skb, struct genl_info *info)
6417 {
6418         struct cfg80211_registered_device *rdev = info->user_ptr[0];
6419         struct net_device *dev = info->user_ptr[1];
6420         struct wireless_dev *wdev = dev->ieee80211_ptr;
6421         struct bss_parameters params;
6422         int err;
6423
6424         memset(&params, 0, sizeof(params));
6425         /* default to not changing parameters */
6426         params.use_cts_prot = -1;
6427         params.use_short_preamble = -1;
6428         params.use_short_slot_time = -1;
6429         params.ap_isolate = -1;
6430         params.ht_opmode = -1;
6431         params.p2p_ctwindow = -1;
6432         params.p2p_opp_ps = -1;
6433
6434         if (info->attrs[NL80211_ATTR_BSS_CTS_PROT])
6435                 params.use_cts_prot =
6436                     nla_get_u8(info->attrs[NL80211_ATTR_BSS_CTS_PROT]);
6437         if (info->attrs[NL80211_ATTR_BSS_SHORT_PREAMBLE])
6438                 params.use_short_preamble =
6439                     nla_get_u8(info->attrs[NL80211_ATTR_BSS_SHORT_PREAMBLE]);
6440         if (info->attrs[NL80211_ATTR_BSS_SHORT_SLOT_TIME])
6441                 params.use_short_slot_time =
6442                     nla_get_u8(info->attrs[NL80211_ATTR_BSS_SHORT_SLOT_TIME]);
6443         if (info->attrs[NL80211_ATTR_BSS_BASIC_RATES]) {
6444                 params.basic_rates =
6445                         nla_data(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
6446                 params.basic_rates_len =
6447                         nla_len(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
6448         }
6449         if (info->attrs[NL80211_ATTR_AP_ISOLATE])
6450                 params.ap_isolate = !!nla_get_u8(info->attrs[NL80211_ATTR_AP_ISOLATE]);
6451         if (info->attrs[NL80211_ATTR_BSS_HT_OPMODE])
6452                 params.ht_opmode =
6453                         nla_get_u16(info->attrs[NL80211_ATTR_BSS_HT_OPMODE]);
6454
6455         if (info->attrs[NL80211_ATTR_P2P_CTWINDOW]) {
6456                 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
6457                         return -EINVAL;
6458                 params.p2p_ctwindow =
6459                         nla_get_u8(info->attrs[NL80211_ATTR_P2P_CTWINDOW]);
6460                 if (params.p2p_ctwindow != 0 &&
6461                     !(rdev->wiphy.features & NL80211_FEATURE_P2P_GO_CTWIN))
6462                         return -EINVAL;
6463         }
6464
6465         if (info->attrs[NL80211_ATTR_P2P_OPPPS]) {
6466                 u8 tmp;
6467
6468                 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
6469                         return -EINVAL;
6470                 tmp = nla_get_u8(info->attrs[NL80211_ATTR_P2P_OPPPS]);
6471                 params.p2p_opp_ps = tmp;
6472                 if (params.p2p_opp_ps &&
6473                     !(rdev->wiphy.features & NL80211_FEATURE_P2P_GO_OPPPS))
6474                         return -EINVAL;
6475         }
6476
6477         if (!rdev->ops->change_bss)
6478                 return -EOPNOTSUPP;
6479
6480         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
6481             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
6482                 return -EOPNOTSUPP;
6483
6484         wdev_lock(wdev);
6485         err = rdev_change_bss(rdev, dev, &params);
6486         wdev_unlock(wdev);
6487
6488         return err;
6489 }
6490
6491 static int nl80211_req_set_reg(struct sk_buff *skb, struct genl_info *info)
6492 {
6493         char *data = NULL;
6494         bool is_indoor;
6495         enum nl80211_user_reg_hint_type user_reg_hint_type;
6496         u32 owner_nlportid;
6497
6498         /*
6499          * You should only get this when cfg80211 hasn't yet initialized
6500          * completely when built-in to the kernel right between the time
6501          * window between nl80211_init() and regulatory_init(), if that is
6502          * even possible.
6503          */
6504         if (unlikely(!rcu_access_pointer(cfg80211_regdomain)))
6505                 return -EINPROGRESS;
6506
6507         if (info->attrs[NL80211_ATTR_USER_REG_HINT_TYPE])
6508                 user_reg_hint_type =
6509                   nla_get_u32(info->attrs[NL80211_ATTR_USER_REG_HINT_TYPE]);
6510         else
6511                 user_reg_hint_type = NL80211_USER_REG_HINT_USER;
6512
6513         switch (user_reg_hint_type) {
6514         case NL80211_USER_REG_HINT_USER:
6515         case NL80211_USER_REG_HINT_CELL_BASE:
6516                 if (!info->attrs[NL80211_ATTR_REG_ALPHA2])
6517                         return -EINVAL;
6518
6519                 data = nla_data(info->attrs[NL80211_ATTR_REG_ALPHA2]);
6520                 return regulatory_hint_user(data, user_reg_hint_type);
6521         case NL80211_USER_REG_HINT_INDOOR:
6522                 if (info->attrs[NL80211_ATTR_SOCKET_OWNER]) {
6523                         owner_nlportid = info->snd_portid;
6524                         is_indoor = !!info->attrs[NL80211_ATTR_REG_INDOOR];
6525                 } else {
6526                         owner_nlportid = 0;
6527                         is_indoor = true;
6528                 }
6529
6530                 return regulatory_hint_indoor(is_indoor, owner_nlportid);
6531         default:
6532                 return -EINVAL;
6533         }
6534 }
6535
6536 static int nl80211_reload_regdb(struct sk_buff *skb, struct genl_info *info)
6537 {
6538         return reg_reload_regdb();
6539 }
6540
6541 static int nl80211_get_mesh_config(struct sk_buff *skb,
6542                                    struct genl_info *info)
6543 {
6544         struct cfg80211_registered_device *rdev = info->user_ptr[0];
6545         struct net_device *dev = info->user_ptr[1];
6546         struct wireless_dev *wdev = dev->ieee80211_ptr;
6547         struct mesh_config cur_params;
6548         int err = 0;
6549         void *hdr;
6550         struct nlattr *pinfoattr;
6551         struct sk_buff *msg;
6552
6553         if (wdev->iftype != NL80211_IFTYPE_MESH_POINT)
6554                 return -EOPNOTSUPP;
6555
6556         if (!rdev->ops->get_mesh_config)
6557                 return -EOPNOTSUPP;
6558
6559         wdev_lock(wdev);
6560         /* If not connected, get default parameters */
6561         if (!wdev->mesh_id_len)
6562                 memcpy(&cur_params, &default_mesh_config, sizeof(cur_params));
6563         else
6564                 err = rdev_get_mesh_config(rdev, dev, &cur_params);
6565         wdev_unlock(wdev);
6566
6567         if (err)
6568                 return err;
6569
6570         /* Draw up a netlink message to send back */
6571         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
6572         if (!msg)
6573                 return -ENOMEM;
6574         hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
6575                              NL80211_CMD_GET_MESH_CONFIG);
6576         if (!hdr)
6577                 goto out;
6578         pinfoattr = nla_nest_start_noflag(msg, NL80211_ATTR_MESH_CONFIG);
6579         if (!pinfoattr)
6580                 goto nla_put_failure;
6581         if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
6582             nla_put_u16(msg, NL80211_MESHCONF_RETRY_TIMEOUT,
6583                         cur_params.dot11MeshRetryTimeout) ||
6584             nla_put_u16(msg, NL80211_MESHCONF_CONFIRM_TIMEOUT,
6585                         cur_params.dot11MeshConfirmTimeout) ||
6586             nla_put_u16(msg, NL80211_MESHCONF_HOLDING_TIMEOUT,
6587                         cur_params.dot11MeshHoldingTimeout) ||
6588             nla_put_u16(msg, NL80211_MESHCONF_MAX_PEER_LINKS,
6589                         cur_params.dot11MeshMaxPeerLinks) ||
6590             nla_put_u8(msg, NL80211_MESHCONF_MAX_RETRIES,
6591                        cur_params.dot11MeshMaxRetries) ||
6592             nla_put_u8(msg, NL80211_MESHCONF_TTL,
6593                        cur_params.dot11MeshTTL) ||
6594             nla_put_u8(msg, NL80211_MESHCONF_ELEMENT_TTL,
6595                        cur_params.element_ttl) ||
6596             nla_put_u8(msg, NL80211_MESHCONF_AUTO_OPEN_PLINKS,
6597                        cur_params.auto_open_plinks) ||
6598             nla_put_u32(msg, NL80211_MESHCONF_SYNC_OFFSET_MAX_NEIGHBOR,
6599                         cur_params.dot11MeshNbrOffsetMaxNeighbor) ||
6600             nla_put_u8(msg, NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES,
6601                        cur_params.dot11MeshHWMPmaxPREQretries) ||
6602             nla_put_u32(msg, NL80211_MESHCONF_PATH_REFRESH_TIME,
6603                         cur_params.path_refresh_time) ||
6604             nla_put_u16(msg, NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT,
6605                         cur_params.min_discovery_timeout) ||
6606             nla_put_u32(msg, NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT,
6607                         cur_params.dot11MeshHWMPactivePathTimeout) ||
6608             nla_put_u16(msg, NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL,
6609                         cur_params.dot11MeshHWMPpreqMinInterval) ||
6610             nla_put_u16(msg, NL80211_MESHCONF_HWMP_PERR_MIN_INTERVAL,
6611                         cur_params.dot11MeshHWMPperrMinInterval) ||
6612             nla_put_u16(msg, NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME,
6613                         cur_params.dot11MeshHWMPnetDiameterTraversalTime) ||
6614             nla_put_u8(msg, NL80211_MESHCONF_HWMP_ROOTMODE,
6615                        cur_params.dot11MeshHWMPRootMode) ||
6616             nla_put_u16(msg, NL80211_MESHCONF_HWMP_RANN_INTERVAL,
6617                         cur_params.dot11MeshHWMPRannInterval) ||
6618             nla_put_u8(msg, NL80211_MESHCONF_GATE_ANNOUNCEMENTS,
6619                        cur_params.dot11MeshGateAnnouncementProtocol) ||
6620             nla_put_u8(msg, NL80211_MESHCONF_FORWARDING,
6621                        cur_params.dot11MeshForwarding) ||
6622             nla_put_s32(msg, NL80211_MESHCONF_RSSI_THRESHOLD,
6623                         cur_params.rssi_threshold) ||
6624             nla_put_u32(msg, NL80211_MESHCONF_HT_OPMODE,
6625                         cur_params.ht_opmode) ||
6626             nla_put_u32(msg, NL80211_MESHCONF_HWMP_PATH_TO_ROOT_TIMEOUT,
6627                         cur_params.dot11MeshHWMPactivePathToRootTimeout) ||
6628             nla_put_u16(msg, NL80211_MESHCONF_HWMP_ROOT_INTERVAL,
6629                         cur_params.dot11MeshHWMProotInterval) ||
6630             nla_put_u16(msg, NL80211_MESHCONF_HWMP_CONFIRMATION_INTERVAL,
6631                         cur_params.dot11MeshHWMPconfirmationInterval) ||
6632             nla_put_u32(msg, NL80211_MESHCONF_POWER_MODE,
6633                         cur_params.power_mode) ||
6634             nla_put_u16(msg, NL80211_MESHCONF_AWAKE_WINDOW,
6635                         cur_params.dot11MeshAwakeWindowDuration) ||
6636             nla_put_u32(msg, NL80211_MESHCONF_PLINK_TIMEOUT,
6637                         cur_params.plink_timeout) ||
6638             nla_put_u8(msg, NL80211_MESHCONF_CONNECTED_TO_GATE,
6639                        cur_params.dot11MeshConnectedToMeshGate))
6640                 goto nla_put_failure;
6641         nla_nest_end(msg, pinfoattr);
6642         genlmsg_end(msg, hdr);
6643         return genlmsg_reply(msg, info);
6644
6645  nla_put_failure:
6646  out:
6647         nlmsg_free(msg);
6648         return -ENOBUFS;
6649 }
6650
6651 static const struct nla_policy
6652 nl80211_meshconf_params_policy[NL80211_MESHCONF_ATTR_MAX+1] = {
6653         [NL80211_MESHCONF_RETRY_TIMEOUT] =
6654                 NLA_POLICY_RANGE(NLA_U16, 1, 255),
6655         [NL80211_MESHCONF_CONFIRM_TIMEOUT] =
6656                 NLA_POLICY_RANGE(NLA_U16, 1, 255),
6657         [NL80211_MESHCONF_HOLDING_TIMEOUT] =
6658                 NLA_POLICY_RANGE(NLA_U16, 1, 255),
6659         [NL80211_MESHCONF_MAX_PEER_LINKS] =
6660                 NLA_POLICY_RANGE(NLA_U16, 0, 255),
6661         [NL80211_MESHCONF_MAX_RETRIES] = NLA_POLICY_MAX(NLA_U8, 16),
6662         [NL80211_MESHCONF_TTL] = NLA_POLICY_MIN(NLA_U8, 1),
6663         [NL80211_MESHCONF_ELEMENT_TTL] = NLA_POLICY_MIN(NLA_U8, 1),
6664         [NL80211_MESHCONF_AUTO_OPEN_PLINKS] = NLA_POLICY_MAX(NLA_U8, 1),
6665         [NL80211_MESHCONF_SYNC_OFFSET_MAX_NEIGHBOR] =
6666                 NLA_POLICY_RANGE(NLA_U32, 1, 255),
6667         [NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES] = { .type = NLA_U8 },
6668         [NL80211_MESHCONF_PATH_REFRESH_TIME] = { .type = NLA_U32 },
6669         [NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT] = NLA_POLICY_MIN(NLA_U16, 1),
6670         [NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT] = { .type = NLA_U32 },
6671         [NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL] =
6672                 NLA_POLICY_MIN(NLA_U16, 1),
6673         [NL80211_MESHCONF_HWMP_PERR_MIN_INTERVAL] =
6674                 NLA_POLICY_MIN(NLA_U16, 1),
6675         [NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME] =
6676                 NLA_POLICY_MIN(NLA_U16, 1),
6677         [NL80211_MESHCONF_HWMP_ROOTMODE] = NLA_POLICY_MAX(NLA_U8, 4),
6678         [NL80211_MESHCONF_HWMP_RANN_INTERVAL] =
6679                 NLA_POLICY_MIN(NLA_U16, 1),
6680         [NL80211_MESHCONF_GATE_ANNOUNCEMENTS] = NLA_POLICY_MAX(NLA_U8, 1),
6681         [NL80211_MESHCONF_FORWARDING] = NLA_POLICY_MAX(NLA_U8, 1),
6682         [NL80211_MESHCONF_RSSI_THRESHOLD] =
6683                 NLA_POLICY_RANGE(NLA_S32, -255, 0),
6684         [NL80211_MESHCONF_HT_OPMODE] = { .type = NLA_U16 },
6685         [NL80211_MESHCONF_HWMP_PATH_TO_ROOT_TIMEOUT] = { .type = NLA_U32 },
6686         [NL80211_MESHCONF_HWMP_ROOT_INTERVAL] =
6687                 NLA_POLICY_MIN(NLA_U16, 1),
6688         [NL80211_MESHCONF_HWMP_CONFIRMATION_INTERVAL] =
6689                 NLA_POLICY_MIN(NLA_U16, 1),
6690         [NL80211_MESHCONF_POWER_MODE] =
6691                 NLA_POLICY_RANGE(NLA_U32,
6692                                  NL80211_MESH_POWER_ACTIVE,
6693                                  NL80211_MESH_POWER_MAX),
6694         [NL80211_MESHCONF_AWAKE_WINDOW] = { .type = NLA_U16 },
6695         [NL80211_MESHCONF_PLINK_TIMEOUT] = { .type = NLA_U32 },
6696         [NL80211_MESHCONF_CONNECTED_TO_GATE] = NLA_POLICY_RANGE(NLA_U8, 0, 1),
6697 };
6698
6699 static const struct nla_policy
6700         nl80211_mesh_setup_params_policy[NL80211_MESH_SETUP_ATTR_MAX+1] = {
6701         [NL80211_MESH_SETUP_ENABLE_VENDOR_SYNC] = { .type = NLA_U8 },
6702         [NL80211_MESH_SETUP_ENABLE_VENDOR_PATH_SEL] = { .type = NLA_U8 },
6703         [NL80211_MESH_SETUP_ENABLE_VENDOR_METRIC] = { .type = NLA_U8 },
6704         [NL80211_MESH_SETUP_USERSPACE_AUTH] = { .type = NLA_FLAG },
6705         [NL80211_MESH_SETUP_AUTH_PROTOCOL] = { .type = NLA_U8 },
6706         [NL80211_MESH_SETUP_USERSPACE_MPM] = { .type = NLA_FLAG },
6707         [NL80211_MESH_SETUP_IE] =
6708                 NLA_POLICY_VALIDATE_FN(NLA_BINARY, validate_ie_attr,
6709                                        IEEE80211_MAX_DATA_LEN),
6710         [NL80211_MESH_SETUP_USERSPACE_AMPE] = { .type = NLA_FLAG },
6711 };
6712
6713 static int nl80211_parse_mesh_config(struct genl_info *info,
6714                                      struct mesh_config *cfg,
6715                                      u32 *mask_out)
6716 {
6717         struct nlattr *tb[NL80211_MESHCONF_ATTR_MAX + 1];
6718         u32 mask = 0;
6719         u16 ht_opmode;
6720
6721 #define FILL_IN_MESH_PARAM_IF_SET(tb, cfg, param, mask, attr, fn)       \
6722 do {                                                                    \
6723         if (tb[attr]) {                                                 \
6724                 cfg->param = fn(tb[attr]);                              \
6725                 mask |= BIT((attr) - 1);                                \
6726         }                                                               \
6727 } while (0)
6728
6729         if (!info->attrs[NL80211_ATTR_MESH_CONFIG])
6730                 return -EINVAL;
6731         if (nla_parse_nested_deprecated(tb, NL80211_MESHCONF_ATTR_MAX, info->attrs[NL80211_ATTR_MESH_CONFIG], nl80211_meshconf_params_policy, info->extack))
6732                 return -EINVAL;
6733
6734         /* This makes sure that there aren't more than 32 mesh config
6735          * parameters (otherwise our bitfield scheme would not work.) */
6736         BUILD_BUG_ON(NL80211_MESHCONF_ATTR_MAX > 32);
6737
6738         /* Fill in the params struct */
6739         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshRetryTimeout, mask,
6740                                   NL80211_MESHCONF_RETRY_TIMEOUT, nla_get_u16);
6741         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshConfirmTimeout, mask,
6742                                   NL80211_MESHCONF_CONFIRM_TIMEOUT,
6743                                   nla_get_u16);
6744         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHoldingTimeout, mask,
6745                                   NL80211_MESHCONF_HOLDING_TIMEOUT,
6746                                   nla_get_u16);
6747         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshMaxPeerLinks, mask,
6748                                   NL80211_MESHCONF_MAX_PEER_LINKS,
6749                                   nla_get_u16);
6750         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshMaxRetries, mask,
6751                                   NL80211_MESHCONF_MAX_RETRIES, nla_get_u8);
6752         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshTTL, mask,
6753                                   NL80211_MESHCONF_TTL, nla_get_u8);
6754         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, element_ttl, mask,
6755                                   NL80211_MESHCONF_ELEMENT_TTL, nla_get_u8);
6756         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, auto_open_plinks, mask,
6757                                   NL80211_MESHCONF_AUTO_OPEN_PLINKS,
6758                                   nla_get_u8);
6759         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshNbrOffsetMaxNeighbor,
6760                                   mask,
6761                                   NL80211_MESHCONF_SYNC_OFFSET_MAX_NEIGHBOR,
6762                                   nla_get_u32);
6763         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPmaxPREQretries, mask,
6764                                   NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES,
6765                                   nla_get_u8);
6766         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, path_refresh_time, mask,
6767                                   NL80211_MESHCONF_PATH_REFRESH_TIME,
6768                                   nla_get_u32);
6769         if (mask & BIT(NL80211_MESHCONF_PATH_REFRESH_TIME) &&
6770             (cfg->path_refresh_time < 1 || cfg->path_refresh_time > 65535))
6771                 return -EINVAL;
6772         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, min_discovery_timeout, mask,
6773                                   NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT,
6774                                   nla_get_u16);
6775         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPactivePathTimeout,
6776                                   mask,
6777                                   NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT,
6778                                   nla_get_u32);
6779         if (mask & BIT(NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT) &&
6780             (cfg->dot11MeshHWMPactivePathTimeout < 1 ||
6781              cfg->dot11MeshHWMPactivePathTimeout > 65535))
6782                 return -EINVAL;
6783         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPpreqMinInterval, mask,
6784                                   NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL,
6785                                   nla_get_u16);
6786         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPperrMinInterval, mask,
6787                                   NL80211_MESHCONF_HWMP_PERR_MIN_INTERVAL,
6788                                   nla_get_u16);
6789         FILL_IN_MESH_PARAM_IF_SET(tb, cfg,
6790                                   dot11MeshHWMPnetDiameterTraversalTime, mask,
6791                                   NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME,
6792                                   nla_get_u16);
6793         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPRootMode, mask,
6794                                   NL80211_MESHCONF_HWMP_ROOTMODE, nla_get_u8);
6795         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPRannInterval, mask,
6796                                   NL80211_MESHCONF_HWMP_RANN_INTERVAL,
6797                                   nla_get_u16);
6798         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshGateAnnouncementProtocol,
6799                                   mask, NL80211_MESHCONF_GATE_ANNOUNCEMENTS,
6800                                   nla_get_u8);
6801         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshForwarding, mask,
6802                                   NL80211_MESHCONF_FORWARDING, nla_get_u8);
6803         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, rssi_threshold, mask,
6804                                   NL80211_MESHCONF_RSSI_THRESHOLD,
6805                                   nla_get_s32);
6806         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshConnectedToMeshGate, mask,
6807                                   NL80211_MESHCONF_CONNECTED_TO_GATE,
6808                                   nla_get_u8);
6809         /*
6810          * Check HT operation mode based on
6811          * IEEE 802.11-2016 9.4.2.57 HT Operation element.
6812          */
6813         if (tb[NL80211_MESHCONF_HT_OPMODE]) {
6814                 ht_opmode = nla_get_u16(tb[NL80211_MESHCONF_HT_OPMODE]);
6815
6816                 if (ht_opmode & ~(IEEE80211_HT_OP_MODE_PROTECTION |
6817                                   IEEE80211_HT_OP_MODE_NON_GF_STA_PRSNT |
6818                                   IEEE80211_HT_OP_MODE_NON_HT_STA_PRSNT))
6819                         return -EINVAL;
6820
6821                 /* NON_HT_STA bit is reserved, but some programs set it */
6822                 ht_opmode &= ~IEEE80211_HT_OP_MODE_NON_HT_STA_PRSNT;
6823
6824                 cfg->ht_opmode = ht_opmode;
6825                 mask |= (1 << (NL80211_MESHCONF_HT_OPMODE - 1));
6826         }
6827         FILL_IN_MESH_PARAM_IF_SET(tb, cfg,
6828                                   dot11MeshHWMPactivePathToRootTimeout, mask,
6829                                   NL80211_MESHCONF_HWMP_PATH_TO_ROOT_TIMEOUT,
6830                                   nla_get_u32);
6831         if (mask & BIT(NL80211_MESHCONF_HWMP_PATH_TO_ROOT_TIMEOUT) &&
6832             (cfg->dot11MeshHWMPactivePathToRootTimeout < 1 ||
6833              cfg->dot11MeshHWMPactivePathToRootTimeout > 65535))
6834                 return -EINVAL;
6835         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMProotInterval, mask,
6836                                   NL80211_MESHCONF_HWMP_ROOT_INTERVAL,
6837                                   nla_get_u16);
6838         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPconfirmationInterval,
6839                                   mask,
6840                                   NL80211_MESHCONF_HWMP_CONFIRMATION_INTERVAL,
6841                                   nla_get_u16);
6842         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, power_mode, mask,
6843                                   NL80211_MESHCONF_POWER_MODE, nla_get_u32);
6844         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshAwakeWindowDuration, mask,
6845                                   NL80211_MESHCONF_AWAKE_WINDOW, nla_get_u16);
6846         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, plink_timeout, mask,
6847                                   NL80211_MESHCONF_PLINK_TIMEOUT, nla_get_u32);
6848         if (mask_out)
6849                 *mask_out = mask;
6850
6851         return 0;
6852
6853 #undef FILL_IN_MESH_PARAM_IF_SET
6854 }
6855
6856 static int nl80211_parse_mesh_setup(struct genl_info *info,
6857                                      struct mesh_setup *setup)
6858 {
6859         struct cfg80211_registered_device *rdev = info->user_ptr[0];
6860         struct nlattr *tb[NL80211_MESH_SETUP_ATTR_MAX + 1];
6861
6862         if (!info->attrs[NL80211_ATTR_MESH_SETUP])
6863                 return -EINVAL;
6864         if (nla_parse_nested_deprecated(tb, NL80211_MESH_SETUP_ATTR_MAX, info->attrs[NL80211_ATTR_MESH_SETUP], nl80211_mesh_setup_params_policy, info->extack))
6865                 return -EINVAL;
6866
6867         if (tb[NL80211_MESH_SETUP_ENABLE_VENDOR_SYNC])
6868                 setup->sync_method =
6869                 (nla_get_u8(tb[NL80211_MESH_SETUP_ENABLE_VENDOR_SYNC])) ?
6870                  IEEE80211_SYNC_METHOD_VENDOR :
6871                  IEEE80211_SYNC_METHOD_NEIGHBOR_OFFSET;
6872
6873         if (tb[NL80211_MESH_SETUP_ENABLE_VENDOR_PATH_SEL])
6874                 setup->path_sel_proto =
6875                 (nla_get_u8(tb[NL80211_MESH_SETUP_ENABLE_VENDOR_PATH_SEL])) ?
6876                  IEEE80211_PATH_PROTOCOL_VENDOR :
6877                  IEEE80211_PATH_PROTOCOL_HWMP;
6878
6879         if (tb[NL80211_MESH_SETUP_ENABLE_VENDOR_METRIC])
6880                 setup->path_metric =
6881                 (nla_get_u8(tb[NL80211_MESH_SETUP_ENABLE_VENDOR_METRIC])) ?
6882                  IEEE80211_PATH_METRIC_VENDOR :
6883                  IEEE80211_PATH_METRIC_AIRTIME;
6884
6885         if (tb[NL80211_MESH_SETUP_IE]) {
6886                 struct nlattr *ieattr =
6887                         tb[NL80211_MESH_SETUP_IE];
6888                 setup->ie = nla_data(ieattr);
6889                 setup->ie_len = nla_len(ieattr);
6890         }
6891         if (tb[NL80211_MESH_SETUP_USERSPACE_MPM] &&
6892             !(rdev->wiphy.features & NL80211_FEATURE_USERSPACE_MPM))
6893                 return -EINVAL;
6894         setup->user_mpm = nla_get_flag(tb[NL80211_MESH_SETUP_USERSPACE_MPM]);
6895         setup->is_authenticated = nla_get_flag(tb[NL80211_MESH_SETUP_USERSPACE_AUTH]);
6896         setup->is_secure = nla_get_flag(tb[NL80211_MESH_SETUP_USERSPACE_AMPE]);
6897         if (setup->is_secure)
6898                 setup->user_mpm = true;
6899
6900         if (tb[NL80211_MESH_SETUP_AUTH_PROTOCOL]) {
6901                 if (!setup->user_mpm)
6902                         return -EINVAL;
6903                 setup->auth_id =
6904                         nla_get_u8(tb[NL80211_MESH_SETUP_AUTH_PROTOCOL]);
6905         }
6906
6907         return 0;
6908 }
6909
6910 static int nl80211_update_mesh_config(struct sk_buff *skb,
6911                                       struct genl_info *info)
6912 {
6913         struct cfg80211_registered_device *rdev = info->user_ptr[0];
6914         struct net_device *dev = info->user_ptr[1];
6915         struct wireless_dev *wdev = dev->ieee80211_ptr;
6916         struct mesh_config cfg;
6917         u32 mask;
6918         int err;
6919
6920         if (wdev->iftype != NL80211_IFTYPE_MESH_POINT)
6921                 return -EOPNOTSUPP;
6922
6923         if (!rdev->ops->update_mesh_config)
6924                 return -EOPNOTSUPP;
6925
6926         err = nl80211_parse_mesh_config(info, &cfg, &mask);
6927         if (err)
6928                 return err;
6929
6930         wdev_lock(wdev);
6931         if (!wdev->mesh_id_len)
6932                 err = -ENOLINK;
6933
6934         if (!err)
6935                 err = rdev_update_mesh_config(rdev, dev, mask, &cfg);
6936
6937         wdev_unlock(wdev);
6938
6939         return err;
6940 }
6941
6942 static int nl80211_put_regdom(const struct ieee80211_regdomain *regdom,
6943                               struct sk_buff *msg)
6944 {
6945         struct nlattr *nl_reg_rules;
6946         unsigned int i;
6947
6948         if (nla_put_string(msg, NL80211_ATTR_REG_ALPHA2, regdom->alpha2) ||
6949             (regdom->dfs_region &&
6950              nla_put_u8(msg, NL80211_ATTR_DFS_REGION, regdom->dfs_region)))
6951                 goto nla_put_failure;
6952
6953         nl_reg_rules = nla_nest_start_noflag(msg, NL80211_ATTR_REG_RULES);
6954         if (!nl_reg_rules)
6955                 goto nla_put_failure;
6956
6957         for (i = 0; i < regdom->n_reg_rules; i++) {
6958                 struct nlattr *nl_reg_rule;
6959                 const struct ieee80211_reg_rule *reg_rule;
6960                 const struct ieee80211_freq_range *freq_range;
6961                 const struct ieee80211_power_rule *power_rule;
6962                 unsigned int max_bandwidth_khz;
6963
6964                 reg_rule = &regdom->reg_rules[i];
6965                 freq_range = &reg_rule->freq_range;
6966                 power_rule = &reg_rule->power_rule;
6967
6968                 nl_reg_rule = nla_nest_start_noflag(msg, i);
6969                 if (!nl_reg_rule)
6970                         goto nla_put_failure;
6971
6972                 max_bandwidth_khz = freq_range->max_bandwidth_khz;
6973                 if (!max_bandwidth_khz)
6974                         max_bandwidth_khz = reg_get_max_bandwidth(regdom,
6975                                                                   reg_rule);
6976
6977                 if (nla_put_u32(msg, NL80211_ATTR_REG_RULE_FLAGS,
6978                                 reg_rule->flags) ||
6979                     nla_put_u32(msg, NL80211_ATTR_FREQ_RANGE_START,
6980                                 freq_range->start_freq_khz) ||
6981                     nla_put_u32(msg, NL80211_ATTR_FREQ_RANGE_END,
6982                                 freq_range->end_freq_khz) ||
6983                     nla_put_u32(msg, NL80211_ATTR_FREQ_RANGE_MAX_BW,
6984                                 max_bandwidth_khz) ||
6985                     nla_put_u32(msg, NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN,
6986                                 power_rule->max_antenna_gain) ||
6987                     nla_put_u32(msg, NL80211_ATTR_POWER_RULE_MAX_EIRP,
6988                                 power_rule->max_eirp) ||
6989                     nla_put_u32(msg, NL80211_ATTR_DFS_CAC_TIME,
6990                                 reg_rule->dfs_cac_ms))
6991                         goto nla_put_failure;
6992
6993                 nla_nest_end(msg, nl_reg_rule);
6994         }
6995
6996         nla_nest_end(msg, nl_reg_rules);
6997         return 0;
6998
6999 nla_put_failure:
7000         return -EMSGSIZE;
7001 }
7002
7003 static int nl80211_get_reg_do(struct sk_buff *skb, struct genl_info *info)
7004 {
7005         const struct ieee80211_regdomain *regdom = NULL;
7006         struct cfg80211_registered_device *rdev;
7007         struct wiphy *wiphy = NULL;
7008         struct sk_buff *msg;
7009         void *hdr;
7010
7011         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
7012         if (!msg)
7013                 return -ENOBUFS;
7014
7015         hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
7016                              NL80211_CMD_GET_REG);
7017         if (!hdr)
7018                 goto put_failure;
7019
7020         if (info->attrs[NL80211_ATTR_WIPHY]) {
7021                 bool self_managed;
7022
7023                 rdev = cfg80211_get_dev_from_info(genl_info_net(info), info);
7024                 if (IS_ERR(rdev)) {
7025                         nlmsg_free(msg);
7026                         return PTR_ERR(rdev);
7027                 }
7028
7029                 wiphy = &rdev->wiphy;
7030                 self_managed = wiphy->regulatory_flags &
7031                                REGULATORY_WIPHY_SELF_MANAGED;
7032                 regdom = get_wiphy_regdom(wiphy);
7033
7034                 /* a self-managed-reg device must have a private regdom */
7035                 if (WARN_ON(!regdom && self_managed)) {
7036                         nlmsg_free(msg);
7037                         return -EINVAL;
7038                 }
7039
7040                 if (regdom &&
7041                     nla_put_u32(msg, NL80211_ATTR_WIPHY, get_wiphy_idx(wiphy)))
7042                         goto nla_put_failure;
7043         }
7044
7045         if (!wiphy && reg_last_request_cell_base() &&
7046             nla_put_u32(msg, NL80211_ATTR_USER_REG_HINT_TYPE,
7047                         NL80211_USER_REG_HINT_CELL_BASE))
7048                 goto nla_put_failure;
7049
7050         rcu_read_lock();
7051
7052         if (!regdom)
7053                 regdom = rcu_dereference(cfg80211_regdomain);
7054
7055         if (nl80211_put_regdom(regdom, msg))
7056                 goto nla_put_failure_rcu;
7057
7058         rcu_read_unlock();
7059
7060         genlmsg_end(msg, hdr);
7061         return genlmsg_reply(msg, info);
7062
7063 nla_put_failure_rcu:
7064         rcu_read_unlock();
7065 nla_put_failure:
7066 put_failure:
7067         nlmsg_free(msg);
7068         return -EMSGSIZE;
7069 }
7070
7071 static int nl80211_send_regdom(struct sk_buff *msg, struct netlink_callback *cb,
7072                                u32 seq, int flags, struct wiphy *wiphy,
7073                                const struct ieee80211_regdomain *regdom)
7074 {
7075         void *hdr = nl80211hdr_put(msg, NETLINK_CB(cb->skb).portid, seq, flags,
7076                                    NL80211_CMD_GET_REG);
7077
7078         if (!hdr)
7079                 return -1;
7080
7081         genl_dump_check_consistent(cb, hdr);
7082
7083         if (nl80211_put_regdom(regdom, msg))
7084                 goto nla_put_failure;
7085
7086         if (!wiphy && reg_last_request_cell_base() &&
7087             nla_put_u32(msg, NL80211_ATTR_USER_REG_HINT_TYPE,
7088                         NL80211_USER_REG_HINT_CELL_BASE))
7089                 goto nla_put_failure;
7090
7091         if (wiphy &&
7092             nla_put_u32(msg, NL80211_ATTR_WIPHY, get_wiphy_idx(wiphy)))
7093                 goto nla_put_failure;
7094
7095         if (wiphy && wiphy->regulatory_flags & REGULATORY_WIPHY_SELF_MANAGED &&
7096             nla_put_flag(msg, NL80211_ATTR_WIPHY_SELF_MANAGED_REG))
7097                 goto nla_put_failure;
7098
7099         genlmsg_end(msg, hdr);
7100         return 0;
7101
7102 nla_put_failure:
7103         genlmsg_cancel(msg, hdr);
7104         return -EMSGSIZE;
7105 }
7106
7107 static int nl80211_get_reg_dump(struct sk_buff *skb,
7108                                 struct netlink_callback *cb)
7109 {
7110         const struct ieee80211_regdomain *regdom = NULL;
7111         struct cfg80211_registered_device *rdev;
7112         int err, reg_idx, start = cb->args[2];
7113
7114         rtnl_lock();
7115
7116         if (cfg80211_regdomain && start == 0) {
7117                 err = nl80211_send_regdom(skb, cb, cb->nlh->nlmsg_seq,
7118                                           NLM_F_MULTI, NULL,
7119                                           rtnl_dereference(cfg80211_regdomain));
7120                 if (err < 0)
7121                         goto out_err;
7122         }
7123
7124         /* the global regdom is idx 0 */
7125         reg_idx = 1;
7126         list_for_each_entry(rdev, &cfg80211_rdev_list, list) {
7127                 regdom = get_wiphy_regdom(&rdev->wiphy);
7128                 if (!regdom)
7129                         continue;
7130
7131                 if (++reg_idx <= start)
7132                         continue;
7133
7134                 err = nl80211_send_regdom(skb, cb, cb->nlh->nlmsg_seq,
7135                                           NLM_F_MULTI, &rdev->wiphy, regdom);
7136                 if (err < 0) {
7137                         reg_idx--;
7138                         break;
7139                 }
7140         }
7141
7142         cb->args[2] = reg_idx;
7143         err = skb->len;
7144 out_err:
7145         rtnl_unlock();
7146         return err;
7147 }
7148
7149 #ifdef CONFIG_CFG80211_CRDA_SUPPORT
7150 static const struct nla_policy reg_rule_policy[NL80211_REG_RULE_ATTR_MAX + 1] = {
7151         [NL80211_ATTR_REG_RULE_FLAGS]           = { .type = NLA_U32 },
7152         [NL80211_ATTR_FREQ_RANGE_START]         = { .type = NLA_U32 },
7153         [NL80211_ATTR_FREQ_RANGE_END]           = { .type = NLA_U32 },
7154         [NL80211_ATTR_FREQ_RANGE_MAX_BW]        = { .type = NLA_U32 },
7155         [NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN]  = { .type = NLA_U32 },
7156         [NL80211_ATTR_POWER_RULE_MAX_EIRP]      = { .type = NLA_U32 },
7157         [NL80211_ATTR_DFS_CAC_TIME]             = { .type = NLA_U32 },
7158 };
7159
7160 static int parse_reg_rule(struct nlattr *tb[],
7161         struct ieee80211_reg_rule *reg_rule)
7162 {
7163         struct ieee80211_freq_range *freq_range = &reg_rule->freq_range;
7164         struct ieee80211_power_rule *power_rule = &reg_rule->power_rule;
7165
7166         if (!tb[NL80211_ATTR_REG_RULE_FLAGS])
7167                 return -EINVAL;
7168         if (!tb[NL80211_ATTR_FREQ_RANGE_START])
7169                 return -EINVAL;
7170         if (!tb[NL80211_ATTR_FREQ_RANGE_END])
7171                 return -EINVAL;
7172         if (!tb[NL80211_ATTR_FREQ_RANGE_MAX_BW])
7173                 return -EINVAL;
7174         if (!tb[NL80211_ATTR_POWER_RULE_MAX_EIRP])
7175                 return -EINVAL;
7176
7177         reg_rule->flags = nla_get_u32(tb[NL80211_ATTR_REG_RULE_FLAGS]);
7178
7179         freq_range->start_freq_khz =
7180                 nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_START]);
7181         freq_range->end_freq_khz =
7182                 nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_END]);
7183         freq_range->max_bandwidth_khz =
7184                 nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_MAX_BW]);
7185
7186         power_rule->max_eirp =
7187                 nla_get_u32(tb[NL80211_ATTR_POWER_RULE_MAX_EIRP]);
7188
7189         if (tb[NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN])
7190                 power_rule->max_antenna_gain =
7191                         nla_get_u32(tb[NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN]);
7192
7193         if (tb[NL80211_ATTR_DFS_CAC_TIME])
7194                 reg_rule->dfs_cac_ms =
7195                         nla_get_u32(tb[NL80211_ATTR_DFS_CAC_TIME]);
7196
7197         return 0;
7198 }
7199
7200 static int nl80211_set_reg(struct sk_buff *skb, struct genl_info *info)
7201 {
7202         struct nlattr *tb[NL80211_REG_RULE_ATTR_MAX + 1];
7203         struct nlattr *nl_reg_rule;
7204         char *alpha2;
7205         int rem_reg_rules, r;
7206         u32 num_rules = 0, rule_idx = 0;
7207         enum nl80211_dfs_regions dfs_region = NL80211_DFS_UNSET;
7208         struct ieee80211_regdomain *rd;
7209
7210         if (!info->attrs[NL80211_ATTR_REG_ALPHA2])
7211                 return -EINVAL;
7212
7213         if (!info->attrs[NL80211_ATTR_REG_RULES])
7214                 return -EINVAL;
7215
7216         alpha2 = nla_data(info->attrs[NL80211_ATTR_REG_ALPHA2]);
7217
7218         if (info->attrs[NL80211_ATTR_DFS_REGION])
7219                 dfs_region = nla_get_u8(info->attrs[NL80211_ATTR_DFS_REGION]);
7220
7221         nla_for_each_nested(nl_reg_rule, info->attrs[NL80211_ATTR_REG_RULES],
7222                             rem_reg_rules) {
7223                 num_rules++;
7224                 if (num_rules > NL80211_MAX_SUPP_REG_RULES)
7225                         return -EINVAL;
7226         }
7227
7228         if (!reg_is_valid_request(alpha2))
7229                 return -EINVAL;
7230
7231         rd = kzalloc(struct_size(rd, reg_rules, num_rules), GFP_KERNEL);
7232         if (!rd)
7233                 return -ENOMEM;
7234
7235         rd->n_reg_rules = num_rules;
7236         rd->alpha2[0] = alpha2[0];
7237         rd->alpha2[1] = alpha2[1];
7238
7239         /*
7240          * Disable DFS master mode if the DFS region was
7241          * not supported or known on this kernel.
7242          */
7243         if (reg_supported_dfs_region(dfs_region))
7244                 rd->dfs_region = dfs_region;
7245
7246         nla_for_each_nested(nl_reg_rule, info->attrs[NL80211_ATTR_REG_RULES],
7247                             rem_reg_rules) {
7248                 r = nla_parse_nested_deprecated(tb, NL80211_REG_RULE_ATTR_MAX,
7249                                                 nl_reg_rule, reg_rule_policy,
7250                                                 info->extack);
7251                 if (r)
7252                         goto bad_reg;
7253                 r = parse_reg_rule(tb, &rd->reg_rules[rule_idx]);
7254                 if (r)
7255                         goto bad_reg;
7256
7257                 rule_idx++;
7258
7259                 if (rule_idx > NL80211_MAX_SUPP_REG_RULES) {
7260                         r = -EINVAL;
7261                         goto bad_reg;
7262                 }
7263         }
7264
7265         /* set_regdom takes ownership of rd */
7266         return set_regdom(rd, REGD_SOURCE_CRDA);
7267  bad_reg:
7268         kfree(rd);
7269         return r;
7270 }
7271 #endif /* CONFIG_CFG80211_CRDA_SUPPORT */
7272
7273 static int validate_scan_freqs(struct nlattr *freqs)
7274 {
7275         struct nlattr *attr1, *attr2;
7276         int n_channels = 0, tmp1, tmp2;
7277
7278         nla_for_each_nested(attr1, freqs, tmp1)
7279                 if (nla_len(attr1) != sizeof(u32))
7280                         return 0;
7281
7282         nla_for_each_nested(attr1, freqs, tmp1) {
7283                 n_channels++;
7284                 /*
7285                  * Some hardware has a limited channel list for
7286                  * scanning, and it is pretty much nonsensical
7287                  * to scan for a channel twice, so disallow that
7288                  * and don't require drivers to check that the
7289                  * channel list they get isn't longer than what
7290                  * they can scan, as long as they can scan all
7291                  * the channels they registered at once.
7292                  */
7293                 nla_for_each_nested(attr2, freqs, tmp2)
7294                         if (attr1 != attr2 &&
7295                             nla_get_u32(attr1) == nla_get_u32(attr2))
7296                                 return 0;
7297         }
7298
7299         return n_channels;
7300 }
7301
7302 static bool is_band_valid(struct wiphy *wiphy, enum nl80211_band b)
7303 {
7304         return b < NUM_NL80211_BANDS && wiphy->bands[b];
7305 }
7306
7307 static int parse_bss_select(struct nlattr *nla, struct wiphy *wiphy,
7308                             struct cfg80211_bss_selection *bss_select)
7309 {
7310         struct nlattr *attr[NL80211_BSS_SELECT_ATTR_MAX + 1];
7311         struct nlattr *nest;
7312         int err;
7313         bool found = false;
7314         int i;
7315
7316         /* only process one nested attribute */
7317         nest = nla_data(nla);
7318         if (!nla_ok(nest, nla_len(nest)))
7319                 return -EINVAL;
7320
7321         err = nla_parse_nested_deprecated(attr, NL80211_BSS_SELECT_ATTR_MAX,
7322                                           nest, nl80211_bss_select_policy,
7323                                           NULL);
7324         if (err)
7325                 return err;
7326
7327         /* only one attribute may be given */
7328         for (i = 0; i <= NL80211_BSS_SELECT_ATTR_MAX; i++) {
7329                 if (attr[i]) {
7330                         if (found)
7331                                 return -EINVAL;
7332                         found = true;
7333                 }
7334         }
7335
7336         bss_select->behaviour = __NL80211_BSS_SELECT_ATTR_INVALID;
7337
7338         if (attr[NL80211_BSS_SELECT_ATTR_RSSI])
7339                 bss_select->behaviour = NL80211_BSS_SELECT_ATTR_RSSI;
7340
7341         if (attr[NL80211_BSS_SELECT_ATTR_BAND_PREF]) {
7342                 bss_select->behaviour = NL80211_BSS_SELECT_ATTR_BAND_PREF;
7343                 bss_select->param.band_pref =
7344                         nla_get_u32(attr[NL80211_BSS_SELECT_ATTR_BAND_PREF]);
7345                 if (!is_band_valid(wiphy, bss_select->param.band_pref))
7346                         return -EINVAL;
7347         }
7348
7349         if (attr[NL80211_BSS_SELECT_ATTR_RSSI_ADJUST]) {
7350                 struct nl80211_bss_select_rssi_adjust *adj_param;
7351
7352                 adj_param = nla_data(attr[NL80211_BSS_SELECT_ATTR_RSSI_ADJUST]);
7353                 bss_select->behaviour = NL80211_BSS_SELECT_ATTR_RSSI_ADJUST;
7354                 bss_select->param.adjust.band = adj_param->band;
7355                 bss_select->param.adjust.delta = adj_param->delta;
7356                 if (!is_band_valid(wiphy, bss_select->param.adjust.band))
7357                         return -EINVAL;
7358         }
7359
7360         /* user-space did not provide behaviour attribute */
7361         if (bss_select->behaviour == __NL80211_BSS_SELECT_ATTR_INVALID)
7362                 return -EINVAL;
7363
7364         if (!(wiphy->bss_select_support & BIT(bss_select->behaviour)))
7365                 return -EINVAL;
7366
7367         return 0;
7368 }
7369
7370 int nl80211_parse_random_mac(struct nlattr **attrs,
7371                              u8 *mac_addr, u8 *mac_addr_mask)
7372 {
7373         int i;
7374
7375         if (!attrs[NL80211_ATTR_MAC] && !attrs[NL80211_ATTR_MAC_MASK]) {
7376                 eth_zero_addr(mac_addr);
7377                 eth_zero_addr(mac_addr_mask);
7378                 mac_addr[0] = 0x2;
7379                 mac_addr_mask[0] = 0x3;
7380
7381                 return 0;
7382         }
7383
7384         /* need both or none */
7385         if (!attrs[NL80211_ATTR_MAC] || !attrs[NL80211_ATTR_MAC_MASK])
7386                 return -EINVAL;
7387
7388         memcpy(mac_addr, nla_data(attrs[NL80211_ATTR_MAC]), ETH_ALEN);
7389         memcpy(mac_addr_mask, nla_data(attrs[NL80211_ATTR_MAC_MASK]), ETH_ALEN);
7390
7391         /* don't allow or configure an mcast address */
7392         if (!is_multicast_ether_addr(mac_addr_mask) ||
7393             is_multicast_ether_addr(mac_addr))
7394                 return -EINVAL;
7395
7396         /*
7397          * allow users to pass a MAC address that has bits set outside
7398          * of the mask, but don't bother drivers with having to deal
7399          * with such bits
7400          */
7401         for (i = 0; i < ETH_ALEN; i++)
7402                 mac_addr[i] &= mac_addr_mask[i];
7403
7404         return 0;
7405 }
7406
7407 static bool cfg80211_off_channel_oper_allowed(struct wireless_dev *wdev)
7408 {
7409         ASSERT_WDEV_LOCK(wdev);
7410
7411         if (!cfg80211_beaconing_iface_active(wdev))
7412                 return true;
7413
7414         if (!(wdev->chandef.chan->flags & IEEE80211_CHAN_RADAR))
7415                 return true;
7416
7417         return regulatory_pre_cac_allowed(wdev->wiphy);
7418 }
7419
7420 static bool nl80211_check_scan_feat(struct wiphy *wiphy, u32 flags, u32 flag,
7421                                     enum nl80211_ext_feature_index feat)
7422 {
7423         if (!(flags & flag))
7424                 return true;
7425         if (wiphy_ext_feature_isset(wiphy, feat))
7426                 return true;
7427         return false;
7428 }
7429
7430 static int
7431 nl80211_check_scan_flags(struct wiphy *wiphy, struct wireless_dev *wdev,
7432                          void *request, struct nlattr **attrs,
7433                          bool is_sched_scan)
7434 {
7435         u8 *mac_addr, *mac_addr_mask;
7436         u32 *flags;
7437         enum nl80211_feature_flags randomness_flag;
7438
7439         if (!attrs[NL80211_ATTR_SCAN_FLAGS])
7440                 return 0;
7441
7442         if (is_sched_scan) {
7443                 struct cfg80211_sched_scan_request *req = request;
7444
7445                 randomness_flag = wdev ?
7446                                   NL80211_FEATURE_SCHED_SCAN_RANDOM_MAC_ADDR :
7447                                   NL80211_FEATURE_ND_RANDOM_MAC_ADDR;
7448                 flags = &req->flags;
7449                 mac_addr = req->mac_addr;
7450                 mac_addr_mask = req->mac_addr_mask;
7451         } else {
7452                 struct cfg80211_scan_request *req = request;
7453
7454                 randomness_flag = NL80211_FEATURE_SCAN_RANDOM_MAC_ADDR;
7455                 flags = &req->flags;
7456                 mac_addr = req->mac_addr;
7457                 mac_addr_mask = req->mac_addr_mask;
7458         }
7459
7460         *flags = nla_get_u32(attrs[NL80211_ATTR_SCAN_FLAGS]);
7461
7462         if (((*flags & NL80211_SCAN_FLAG_LOW_PRIORITY) &&
7463              !(wiphy->features & NL80211_FEATURE_LOW_PRIORITY_SCAN)) ||
7464             !nl80211_check_scan_feat(wiphy, *flags,
7465                                      NL80211_SCAN_FLAG_LOW_SPAN,
7466                                      NL80211_EXT_FEATURE_LOW_SPAN_SCAN) ||
7467             !nl80211_check_scan_feat(wiphy, *flags,
7468                                      NL80211_SCAN_FLAG_LOW_POWER,
7469                                      NL80211_EXT_FEATURE_LOW_POWER_SCAN) ||
7470             !nl80211_check_scan_feat(wiphy, *flags,
7471                                      NL80211_SCAN_FLAG_HIGH_ACCURACY,
7472                                      NL80211_EXT_FEATURE_HIGH_ACCURACY_SCAN) ||
7473             !nl80211_check_scan_feat(wiphy, *flags,
7474                                      NL80211_SCAN_FLAG_FILS_MAX_CHANNEL_TIME,
7475                                      NL80211_EXT_FEATURE_FILS_MAX_CHANNEL_TIME) ||
7476             !nl80211_check_scan_feat(wiphy, *flags,
7477                                      NL80211_SCAN_FLAG_ACCEPT_BCAST_PROBE_RESP,
7478                                      NL80211_EXT_FEATURE_ACCEPT_BCAST_PROBE_RESP) ||
7479             !nl80211_check_scan_feat(wiphy, *flags,
7480                                      NL80211_SCAN_FLAG_OCE_PROBE_REQ_DEFERRAL_SUPPRESSION,
7481                                      NL80211_EXT_FEATURE_OCE_PROBE_REQ_DEFERRAL_SUPPRESSION) ||
7482             !nl80211_check_scan_feat(wiphy, *flags,
7483                                      NL80211_SCAN_FLAG_OCE_PROBE_REQ_HIGH_TX_RATE,
7484                                      NL80211_EXT_FEATURE_OCE_PROBE_REQ_HIGH_TX_RATE) ||
7485             !nl80211_check_scan_feat(wiphy, *flags,
7486                                      NL80211_SCAN_FLAG_RANDOM_SN,
7487                                      NL80211_EXT_FEATURE_SCAN_RANDOM_SN) ||
7488             !nl80211_check_scan_feat(wiphy, *flags,
7489                                      NL80211_SCAN_FLAG_MIN_PREQ_CONTENT,
7490                                      NL80211_EXT_FEATURE_SCAN_MIN_PREQ_CONTENT))
7491                 return -EOPNOTSUPP;
7492
7493         if (*flags & NL80211_SCAN_FLAG_RANDOM_ADDR) {
7494                 int err;
7495
7496                 if (!(wiphy->features & randomness_flag) ||
7497                     (wdev && wdev->current_bss))
7498                         return -EOPNOTSUPP;
7499
7500                 err = nl80211_parse_random_mac(attrs, mac_addr, mac_addr_mask);
7501                 if (err)
7502                         return err;
7503         }
7504
7505         return 0;
7506 }
7507
7508 static int nl80211_trigger_scan(struct sk_buff *skb, struct genl_info *info)
7509 {
7510         struct cfg80211_registered_device *rdev = info->user_ptr[0];
7511         struct wireless_dev *wdev = info->user_ptr[1];
7512         struct cfg80211_scan_request *request;
7513         struct nlattr *attr;
7514         struct wiphy *wiphy;
7515         int err, tmp, n_ssids = 0, n_channels, i;
7516         size_t ie_len;
7517
7518         wiphy = &rdev->wiphy;
7519
7520         if (wdev->iftype == NL80211_IFTYPE_NAN)
7521                 return -EOPNOTSUPP;
7522
7523         if (!rdev->ops->scan)
7524                 return -EOPNOTSUPP;
7525
7526         if (rdev->scan_req || rdev->scan_msg) {
7527                 err = -EBUSY;
7528                 goto unlock;
7529         }
7530
7531         if (info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]) {
7532                 n_channels = validate_scan_freqs(
7533                                 info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]);
7534                 if (!n_channels) {
7535                         err = -EINVAL;
7536                         goto unlock;
7537                 }
7538         } else {
7539                 n_channels = ieee80211_get_num_supported_channels(wiphy);
7540         }
7541
7542         if (info->attrs[NL80211_ATTR_SCAN_SSIDS])
7543                 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_SSIDS], tmp)
7544                         n_ssids++;
7545
7546         if (n_ssids > wiphy->max_scan_ssids) {
7547                 err = -EINVAL;
7548                 goto unlock;
7549         }
7550
7551         if (info->attrs[NL80211_ATTR_IE])
7552                 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
7553         else
7554                 ie_len = 0;
7555
7556         if (ie_len > wiphy->max_scan_ie_len) {
7557                 err = -EINVAL;
7558                 goto unlock;
7559         }
7560
7561         request = kzalloc(sizeof(*request)
7562                         + sizeof(*request->ssids) * n_ssids
7563                         + sizeof(*request->channels) * n_channels
7564                         + ie_len, GFP_KERNEL);
7565         if (!request) {
7566                 err = -ENOMEM;
7567                 goto unlock;
7568         }
7569
7570         if (n_ssids)
7571                 request->ssids = (void *)&request->channels[n_channels];
7572         request->n_ssids = n_ssids;
7573         if (ie_len) {
7574                 if (n_ssids)
7575                         request->ie = (void *)(request->ssids + n_ssids);
7576                 else
7577                         request->ie = (void *)(request->channels + n_channels);
7578         }
7579
7580         i = 0;
7581         if (info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]) {
7582                 /* user specified, bail out if channel not found */
7583                 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_FREQUENCIES], tmp) {
7584                         struct ieee80211_channel *chan;
7585
7586                         chan = ieee80211_get_channel(wiphy, nla_get_u32(attr));
7587
7588                         if (!chan) {
7589                                 err = -EINVAL;
7590                                 goto out_free;
7591                         }
7592
7593                         /* ignore disabled channels */
7594                         if (chan->flags & IEEE80211_CHAN_DISABLED)
7595                                 continue;
7596
7597                         request->channels[i] = chan;
7598                         i++;
7599                 }
7600         } else {
7601                 enum nl80211_band band;
7602
7603                 /* all channels */
7604                 for (band = 0; band < NUM_NL80211_BANDS; band++) {
7605                         int j;
7606
7607                         if (!wiphy->bands[band])
7608                                 continue;
7609                         for (j = 0; j < wiphy->bands[band]->n_channels; j++) {
7610                                 struct ieee80211_channel *chan;
7611
7612                                 chan = &wiphy->bands[band]->channels[j];
7613
7614                                 if (chan->flags & IEEE80211_CHAN_DISABLED)
7615                                         continue;
7616
7617                                 request->channels[i] = chan;
7618                                 i++;
7619                         }
7620                 }
7621         }
7622
7623         if (!i) {
7624                 err = -EINVAL;
7625                 goto out_free;
7626         }
7627
7628         request->n_channels = i;
7629
7630         wdev_lock(wdev);
7631         if (!cfg80211_off_channel_oper_allowed(wdev)) {
7632                 struct ieee80211_channel *chan;
7633
7634                 if (request->n_channels != 1) {
7635                         wdev_unlock(wdev);
7636                         err = -EBUSY;
7637                         goto out_free;
7638                 }
7639
7640                 chan = request->channels[0];
7641                 if (chan->center_freq != wdev->chandef.chan->center_freq) {
7642                         wdev_unlock(wdev);
7643                         err = -EBUSY;
7644                         goto out_free;
7645                 }
7646         }
7647         wdev_unlock(wdev);
7648
7649         i = 0;
7650         if (n_ssids) {
7651                 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_SSIDS], tmp) {
7652                         if (nla_len(attr) > IEEE80211_MAX_SSID_LEN) {
7653                                 err = -EINVAL;
7654                                 goto out_free;
7655                         }
7656                         request->ssids[i].ssid_len = nla_len(attr);
7657                         memcpy(request->ssids[i].ssid, nla_data(attr), nla_len(attr));
7658                         i++;
7659                 }
7660         }
7661
7662         if (info->attrs[NL80211_ATTR_IE]) {
7663                 request->ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
7664                 memcpy((void *)request->ie,
7665                        nla_data(info->attrs[NL80211_ATTR_IE]),
7666                        request->ie_len);
7667         }
7668
7669         for (i = 0; i < NUM_NL80211_BANDS; i++)
7670                 if (wiphy->bands[i])
7671                         request->rates[i] =
7672                                 (1 << wiphy->bands[i]->n_bitrates) - 1;
7673
7674         if (info->attrs[NL80211_ATTR_SCAN_SUPP_RATES]) {
7675                 nla_for_each_nested(attr,
7676                                     info->attrs[NL80211_ATTR_SCAN_SUPP_RATES],
7677                                     tmp) {
7678                         enum nl80211_band band = nla_type(attr);
7679
7680                         if (band < 0 || band >= NUM_NL80211_BANDS) {
7681                                 err = -EINVAL;
7682                                 goto out_free;
7683                         }
7684
7685                         if (!wiphy->bands[band])
7686                                 continue;
7687
7688                         err = ieee80211_get_ratemask(wiphy->bands[band],
7689                                                      nla_data(attr),
7690                                                      nla_len(attr),
7691                                                      &request->rates[band]);
7692                         if (err)
7693                                 goto out_free;
7694                 }
7695         }
7696
7697         if (info->attrs[NL80211_ATTR_MEASUREMENT_DURATION]) {
7698                 if (!wiphy_ext_feature_isset(wiphy,
7699                                         NL80211_EXT_FEATURE_SET_SCAN_DWELL)) {
7700                         err = -EOPNOTSUPP;
7701                         goto out_free;
7702                 }
7703
7704                 request->duration =
7705                         nla_get_u16(info->attrs[NL80211_ATTR_MEASUREMENT_DURATION]);
7706                 request->duration_mandatory =
7707                         nla_get_flag(info->attrs[NL80211_ATTR_MEASUREMENT_DURATION_MANDATORY]);
7708         }
7709
7710         err = nl80211_check_scan_flags(wiphy, wdev, request, info->attrs,
7711                                        false);
7712         if (err)
7713                 goto out_free;
7714
7715         request->no_cck =
7716                 nla_get_flag(info->attrs[NL80211_ATTR_TX_NO_CCK_RATE]);
7717
7718         /* Initial implementation used NL80211_ATTR_MAC to set the specific
7719          * BSSID to scan for. This was problematic because that same attribute
7720          * was already used for another purpose (local random MAC address). The
7721          * NL80211_ATTR_BSSID attribute was added to fix this. For backwards
7722          * compatibility with older userspace components, also use the
7723          * NL80211_ATTR_MAC value here if it can be determined to be used for
7724          * the specific BSSID use case instead of the random MAC address
7725          * (NL80211_ATTR_SCAN_FLAGS is used to enable random MAC address use).
7726          */
7727         if (info->attrs[NL80211_ATTR_BSSID])
7728                 memcpy(request->bssid,
7729                        nla_data(info->attrs[NL80211_ATTR_BSSID]), ETH_ALEN);
7730         else if (!(request->flags & NL80211_SCAN_FLAG_RANDOM_ADDR) &&
7731                  info->attrs[NL80211_ATTR_MAC])
7732                 memcpy(request->bssid, nla_data(info->attrs[NL80211_ATTR_MAC]),
7733                        ETH_ALEN);
7734         else
7735                 eth_broadcast_addr(request->bssid);
7736
7737         request->wdev = wdev;
7738         request->wiphy = &rdev->wiphy;
7739         request->scan_start = jiffies;
7740
7741         rdev->scan_req = request;
7742         err = rdev_scan(rdev, request);
7743
7744         if (!err) {
7745                 nl80211_send_scan_start(rdev, wdev);
7746                 if (wdev->netdev)
7747                         dev_hold(wdev->netdev);
7748         } else {
7749  out_free:
7750                 rdev->scan_req = NULL;
7751                 kfree(request);
7752         }
7753
7754  unlock:
7755         return err;
7756 }
7757
7758 static int nl80211_abort_scan(struct sk_buff *skb, struct genl_info *info)
7759 {
7760         struct cfg80211_registered_device *rdev = info->user_ptr[0];
7761         struct wireless_dev *wdev = info->user_ptr[1];
7762
7763         if (!rdev->ops->abort_scan)
7764                 return -EOPNOTSUPP;
7765
7766         if (rdev->scan_msg)
7767                 return 0;
7768
7769         if (!rdev->scan_req)
7770                 return -ENOENT;
7771
7772         rdev_abort_scan(rdev, wdev);
7773         return 0;
7774 }
7775
7776 static int
7777 nl80211_parse_sched_scan_plans(struct wiphy *wiphy, int n_plans,
7778                                struct cfg80211_sched_scan_request *request,
7779                                struct nlattr **attrs)
7780 {
7781         int tmp, err, i = 0;
7782         struct nlattr *attr;
7783
7784         if (!attrs[NL80211_ATTR_SCHED_SCAN_PLANS]) {
7785                 u32 interval;
7786
7787                 /*
7788                  * If scan plans are not specified,
7789                  * %NL80211_ATTR_SCHED_SCAN_INTERVAL will be specified. In this
7790                  * case one scan plan will be set with the specified scan
7791                  * interval and infinite number of iterations.
7792                  */
7793                 interval = nla_get_u32(attrs[NL80211_ATTR_SCHED_SCAN_INTERVAL]);
7794                 if (!interval)
7795                         return -EINVAL;
7796
7797                 request->scan_plans[0].interval =
7798                         DIV_ROUND_UP(interval, MSEC_PER_SEC);
7799                 if (!request->scan_plans[0].interval)
7800                         return -EINVAL;
7801
7802                 if (request->scan_plans[0].interval >
7803                     wiphy->max_sched_scan_plan_interval)
7804                         request->scan_plans[0].interval =
7805                                 wiphy->max_sched_scan_plan_interval;
7806
7807                 return 0;
7808         }
7809
7810         nla_for_each_nested(attr, attrs[NL80211_ATTR_SCHED_SCAN_PLANS], tmp) {
7811                 struct nlattr *plan[NL80211_SCHED_SCAN_PLAN_MAX + 1];
7812
7813                 if (WARN_ON(i >= n_plans))
7814                         return -EINVAL;
7815
7816                 err = nla_parse_nested_deprecated(plan,
7817                                                   NL80211_SCHED_SCAN_PLAN_MAX,
7818                                                   attr, nl80211_plan_policy,
7819                                                   NULL);
7820                 if (err)
7821                         return err;
7822
7823                 if (!plan[NL80211_SCHED_SCAN_PLAN_INTERVAL])
7824                         return -EINVAL;
7825
7826                 request->scan_plans[i].interval =
7827                         nla_get_u32(plan[NL80211_SCHED_SCAN_PLAN_INTERVAL]);
7828                 if (!request->scan_plans[i].interval ||
7829                     request->scan_plans[i].interval >
7830                     wiphy->max_sched_scan_plan_interval)
7831                         return -EINVAL;
7832
7833                 if (plan[NL80211_SCHED_SCAN_PLAN_ITERATIONS]) {
7834                         request->scan_plans[i].iterations =
7835                                 nla_get_u32(plan[NL80211_SCHED_SCAN_PLAN_ITERATIONS]);
7836                         if (!request->scan_plans[i].iterations ||
7837                             (request->scan_plans[i].iterations >
7838                              wiphy->max_sched_scan_plan_iterations))
7839                                 return -EINVAL;
7840                 } else if (i < n_plans - 1) {
7841                         /*
7842                          * All scan plans but the last one must specify
7843                          * a finite number of iterations
7844                          */
7845                         return -EINVAL;
7846                 }
7847
7848                 i++;
7849         }
7850
7851         /*
7852          * The last scan plan must not specify the number of
7853          * iterations, it is supposed to run infinitely
7854          */
7855         if (request->scan_plans[n_plans - 1].iterations)
7856                 return  -EINVAL;
7857
7858         return 0;
7859 }
7860
7861 static int
7862 nl80211_parse_sched_scan_per_band_rssi(struct wiphy *wiphy,
7863                                        struct cfg80211_match_set *match_sets,
7864                                        struct nlattr *tb_band_rssi,
7865                                        s32 rssi_thold)
7866 {
7867         struct nlattr *attr;
7868         int i, tmp, ret = 0;
7869
7870         if (!wiphy_ext_feature_isset(wiphy,
7871                     NL80211_EXT_FEATURE_SCHED_SCAN_BAND_SPECIFIC_RSSI_THOLD)) {
7872                 if (tb_band_rssi)
7873                         ret = -EOPNOTSUPP;
7874                 else
7875                         for (i = 0; i < NUM_NL80211_BANDS; i++)
7876                                 match_sets->per_band_rssi_thold[i] =
7877                                         NL80211_SCAN_RSSI_THOLD_OFF;
7878                 return ret;
7879         }
7880
7881         for (i = 0; i < NUM_NL80211_BANDS; i++)
7882                 match_sets->per_band_rssi_thold[i] = rssi_thold;
7883
7884         nla_for_each_nested(attr, tb_band_rssi, tmp) {
7885                 enum nl80211_band band = nla_type(attr);
7886
7887                 if (band < 0 || band >= NUM_NL80211_BANDS)
7888                         return -EINVAL;
7889
7890                 match_sets->per_band_rssi_thold[band] = nla_get_s32(attr);
7891         }
7892
7893         return 0;
7894 }
7895
7896 static struct cfg80211_sched_scan_request *
7897 nl80211_parse_sched_scan(struct wiphy *wiphy, struct wireless_dev *wdev,
7898                          struct nlattr **attrs, int max_match_sets)
7899 {
7900         struct cfg80211_sched_scan_request *request;
7901         struct nlattr *attr;
7902         int err, tmp, n_ssids = 0, n_match_sets = 0, n_channels, i, n_plans = 0;
7903         enum nl80211_band band;
7904         size_t ie_len;
7905         struct nlattr *tb[NL80211_SCHED_SCAN_MATCH_ATTR_MAX + 1];
7906         s32 default_match_rssi = NL80211_SCAN_RSSI_THOLD_OFF;
7907
7908         if (attrs[NL80211_ATTR_SCAN_FREQUENCIES]) {
7909                 n_channels = validate_scan_freqs(
7910                                 attrs[NL80211_ATTR_SCAN_FREQUENCIES]);
7911                 if (!n_channels)
7912                         return ERR_PTR(-EINVAL);
7913         } else {
7914                 n_channels = ieee80211_get_num_supported_channels(wiphy);
7915         }
7916
7917         if (attrs[NL80211_ATTR_SCAN_SSIDS])
7918                 nla_for_each_nested(attr, attrs[NL80211_ATTR_SCAN_SSIDS],
7919                                     tmp)
7920                         n_ssids++;
7921
7922         if (n_ssids > wiphy->max_sched_scan_ssids)
7923                 return ERR_PTR(-EINVAL);
7924
7925         /*
7926          * First, count the number of 'real' matchsets. Due to an issue with
7927          * the old implementation, matchsets containing only the RSSI attribute
7928          * (NL80211_SCHED_SCAN_MATCH_ATTR_RSSI) are considered as the 'default'
7929          * RSSI for all matchsets, rather than their own matchset for reporting
7930          * all APs with a strong RSSI. This is needed to be compatible with
7931          * older userspace that treated a matchset with only the RSSI as the
7932          * global RSSI for all other matchsets - if there are other matchsets.
7933          */
7934         if (attrs[NL80211_ATTR_SCHED_SCAN_MATCH]) {
7935                 nla_for_each_nested(attr,
7936                                     attrs[NL80211_ATTR_SCHED_SCAN_MATCH],
7937                                     tmp) {
7938                         struct nlattr *rssi;
7939
7940                         err = nla_parse_nested_deprecated(tb,
7941                                                           NL80211_SCHED_SCAN_MATCH_ATTR_MAX,
7942                                                           attr,
7943                                                           nl80211_match_policy,
7944                                                           NULL);
7945                         if (err)
7946                                 return ERR_PTR(err);
7947
7948                         /* SSID and BSSID are mutually exclusive */
7949                         if (tb[NL80211_SCHED_SCAN_MATCH_ATTR_SSID] &&
7950                             tb[NL80211_SCHED_SCAN_MATCH_ATTR_BSSID])
7951                                 return ERR_PTR(-EINVAL);
7952
7953                         /* add other standalone attributes here */
7954                         if (tb[NL80211_SCHED_SCAN_MATCH_ATTR_SSID] ||
7955                             tb[NL80211_SCHED_SCAN_MATCH_ATTR_BSSID]) {
7956                                 n_match_sets++;
7957                                 continue;
7958                         }
7959                         rssi = tb[NL80211_SCHED_SCAN_MATCH_ATTR_RSSI];
7960                         if (rssi)
7961                                 default_match_rssi = nla_get_s32(rssi);
7962                 }
7963         }
7964
7965         /* However, if there's no other matchset, add the RSSI one */
7966         if (!n_match_sets && default_match_rssi != NL80211_SCAN_RSSI_THOLD_OFF)
7967                 n_match_sets = 1;
7968
7969         if (n_match_sets > max_match_sets)
7970                 return ERR_PTR(-EINVAL);
7971
7972         if (attrs[NL80211_ATTR_IE])
7973                 ie_len = nla_len(attrs[NL80211_ATTR_IE]);
7974         else
7975                 ie_len = 0;
7976
7977         if (ie_len > wiphy->max_sched_scan_ie_len)
7978                 return ERR_PTR(-EINVAL);
7979
7980         if (attrs[NL80211_ATTR_SCHED_SCAN_PLANS]) {
7981                 /*
7982                  * NL80211_ATTR_SCHED_SCAN_INTERVAL must not be specified since
7983                  * each scan plan already specifies its own interval
7984                  */
7985                 if (attrs[NL80211_ATTR_SCHED_SCAN_INTERVAL])
7986                         return ERR_PTR(-EINVAL);
7987
7988                 nla_for_each_nested(attr,
7989                                     attrs[NL80211_ATTR_SCHED_SCAN_PLANS], tmp)
7990                         n_plans++;
7991         } else {
7992                 /*
7993                  * The scan interval attribute is kept for backward
7994                  * compatibility. If no scan plans are specified and sched scan
7995                  * interval is specified, one scan plan will be set with this
7996                  * scan interval and infinite number of iterations.
7997                  */
7998                 if (!attrs[NL80211_ATTR_SCHED_SCAN_INTERVAL])
7999                         return ERR_PTR(-EINVAL);
8000
8001                 n_plans = 1;
8002         }
8003
8004         if (!n_plans || n_plans > wiphy->max_sched_scan_plans)
8005                 return ERR_PTR(-EINVAL);
8006
8007         if (!wiphy_ext_feature_isset(
8008                     wiphy, NL80211_EXT_FEATURE_SCHED_SCAN_RELATIVE_RSSI) &&
8009             (attrs[NL80211_ATTR_SCHED_SCAN_RELATIVE_RSSI] ||
8010              attrs[NL80211_ATTR_SCHED_SCAN_RSSI_ADJUST]))
8011                 return ERR_PTR(-EINVAL);
8012
8013         request = kzalloc(sizeof(*request)
8014                         + sizeof(*request->ssids) * n_ssids
8015                         + sizeof(*request->match_sets) * n_match_sets
8016                         + sizeof(*request->scan_plans) * n_plans
8017                         + sizeof(*request->channels) * n_channels
8018                         + ie_len, GFP_KERNEL);
8019         if (!request)
8020                 return ERR_PTR(-ENOMEM);
8021
8022         if (n_ssids)
8023                 request->ssids = (void *)&request->channels[n_channels];
8024         request->n_ssids = n_ssids;
8025         if (ie_len) {
8026                 if (n_ssids)
8027                         request->ie = (void *)(request->ssids + n_ssids);
8028                 else
8029                         request->ie = (void *)(request->channels + n_channels);
8030         }
8031
8032         if (n_match_sets) {
8033                 if (request->ie)
8034                         request->match_sets = (void *)(request->ie + ie_len);
8035                 else if (n_ssids)
8036                         request->match_sets =
8037                                 (void *)(request->ssids + n_ssids);
8038                 else
8039                         request->match_sets =
8040                                 (void *)(request->channels + n_channels);
8041         }
8042         request->n_match_sets = n_match_sets;
8043
8044         if (n_match_sets)
8045                 request->scan_plans = (void *)(request->match_sets +
8046                                                n_match_sets);
8047         else if (request->ie)
8048                 request->scan_plans = (void *)(request->ie + ie_len);
8049         else if (n_ssids)
8050                 request->scan_plans = (void *)(request->ssids + n_ssids);
8051         else
8052                 request->scan_plans = (void *)(request->channels + n_channels);
8053
8054         request->n_scan_plans = n_plans;
8055
8056         i = 0;
8057         if (attrs[NL80211_ATTR_SCAN_FREQUENCIES]) {
8058                 /* user specified, bail out if channel not found */
8059                 nla_for_each_nested(attr,
8060                                     attrs[NL80211_ATTR_SCAN_FREQUENCIES],
8061                                     tmp) {
8062                         struct ieee80211_channel *chan;
8063
8064                         chan = ieee80211_get_channel(wiphy, nla_get_u32(attr));
8065
8066                         if (!chan) {
8067                                 err = -EINVAL;
8068                                 goto out_free;
8069                         }
8070
8071                         /* ignore disabled channels */
8072                         if (chan->flags & IEEE80211_CHAN_DISABLED)
8073                                 continue;
8074
8075                         request->channels[i] = chan;
8076                         i++;
8077                 }
8078         } else {
8079                 /* all channels */
8080                 for (band = 0; band < NUM_NL80211_BANDS; band++) {
8081                         int j;
8082
8083                         if (!wiphy->bands[band])
8084                                 continue;
8085                         for (j = 0; j < wiphy->bands[band]->n_channels; j++) {
8086                                 struct ieee80211_channel *chan;
8087
8088                                 chan = &wiphy->bands[band]->channels[j];
8089
8090                                 if (chan->flags & IEEE80211_CHAN_DISABLED)
8091                                         continue;
8092
8093                                 request->channels[i] = chan;
8094                                 i++;
8095                         }
8096                 }
8097         }
8098
8099         if (!i) {
8100                 err = -EINVAL;
8101                 goto out_free;
8102         }
8103
8104         request->n_channels = i;
8105
8106         i = 0;
8107         if (n_ssids) {
8108                 nla_for_each_nested(attr, attrs[NL80211_ATTR_SCAN_SSIDS],
8109                                     tmp) {
8110                         if (nla_len(attr) > IEEE80211_MAX_SSID_LEN) {
8111                                 err = -EINVAL;
8112                                 goto out_free;
8113                         }
8114                         request->ssids[i].ssid_len = nla_len(attr);
8115                         memcpy(request->ssids[i].ssid, nla_data(attr),
8116                                nla_len(attr));
8117                         i++;
8118                 }
8119         }
8120
8121         i = 0;
8122         if (attrs[NL80211_ATTR_SCHED_SCAN_MATCH]) {
8123                 nla_for_each_nested(attr,
8124                                     attrs[NL80211_ATTR_SCHED_SCAN_MATCH],
8125                                     tmp) {
8126                         struct nlattr *ssid, *bssid, *rssi;
8127
8128                         err = nla_parse_nested_deprecated(tb,
8129                                                           NL80211_SCHED_SCAN_MATCH_ATTR_MAX,
8130                                                           attr,
8131                                                           nl80211_match_policy,
8132                                                           NULL);
8133                         if (err)
8134                                 goto out_free;
8135                         ssid = tb[NL80211_SCHED_SCAN_MATCH_ATTR_SSID];
8136                         bssid = tb[NL80211_SCHED_SCAN_MATCH_ATTR_BSSID];
8137
8138                         if (!ssid && !bssid) {
8139                                 i++;
8140                                 continue;
8141                         }
8142
8143                         if (WARN_ON(i >= n_match_sets)) {
8144                                 /* this indicates a programming error,
8145                                  * the loop above should have verified
8146                                  * things properly
8147                                  */
8148                                 err = -EINVAL;
8149                                 goto out_free;
8150                         }
8151
8152                         if (ssid) {
8153                                 if (nla_len(ssid) > IEEE80211_MAX_SSID_LEN) {
8154                                         err = -EINVAL;
8155                                         goto out_free;
8156                                 }
8157                                 memcpy(request->match_sets[i].ssid.ssid,
8158                                        nla_data(ssid), nla_len(ssid));
8159                                 request->match_sets[i].ssid.ssid_len =
8160                                         nla_len(ssid);
8161                         }
8162                         if (bssid) {
8163                                 if (nla_len(bssid) != ETH_ALEN) {
8164                                         err = -EINVAL;
8165                                         goto out_free;
8166                                 }
8167                                 memcpy(request->match_sets[i].bssid,
8168                                        nla_data(bssid), ETH_ALEN);
8169                         }
8170
8171                         /* special attribute - old implementation w/a */
8172                         request->match_sets[i].rssi_thold = default_match_rssi;
8173                         rssi = tb[NL80211_SCHED_SCAN_MATCH_ATTR_RSSI];
8174                         if (rssi)
8175                                 request->match_sets[i].rssi_thold =
8176                                         nla_get_s32(rssi);
8177
8178                         /* Parse per band RSSI attribute */
8179                         err = nl80211_parse_sched_scan_per_band_rssi(wiphy,
8180                                 &request->match_sets[i],
8181                                 tb[NL80211_SCHED_SCAN_MATCH_PER_BAND_RSSI],
8182                                 request->match_sets[i].rssi_thold);
8183                         if (err)
8184                                 goto out_free;
8185
8186                         i++;
8187                 }
8188
8189                 /* there was no other matchset, so the RSSI one is alone */
8190                 if (i == 0 && n_match_sets)
8191                         request->match_sets[0].rssi_thold = default_match_rssi;
8192
8193                 request->min_rssi_thold = INT_MAX;
8194                 for (i = 0; i < n_match_sets; i++)
8195                         request->min_rssi_thold =
8196                                 min(request->match_sets[i].rssi_thold,
8197                                     request->min_rssi_thold);
8198         } else {
8199                 request->min_rssi_thold = NL80211_SCAN_RSSI_THOLD_OFF;
8200         }
8201
8202         if (ie_len) {
8203                 request->ie_len = ie_len;
8204                 memcpy((void *)request->ie,
8205                        nla_data(attrs[NL80211_ATTR_IE]),
8206                        request->ie_len);
8207         }
8208
8209         err = nl80211_check_scan_flags(wiphy, wdev, request, attrs, true);
8210         if (err)
8211                 goto out_free;
8212
8213         if (attrs[NL80211_ATTR_SCHED_SCAN_DELAY])
8214                 request->delay =
8215                         nla_get_u32(attrs[NL80211_ATTR_SCHED_SCAN_DELAY]);
8216
8217         if (attrs[NL80211_ATTR_SCHED_SCAN_RELATIVE_RSSI]) {
8218                 request->relative_rssi = nla_get_s8(
8219                         attrs[NL80211_ATTR_SCHED_SCAN_RELATIVE_RSSI]);
8220                 request->relative_rssi_set = true;
8221         }
8222
8223         if (request->relative_rssi_set &&
8224             attrs[NL80211_ATTR_SCHED_SCAN_RSSI_ADJUST]) {
8225                 struct nl80211_bss_select_rssi_adjust *rssi_adjust;
8226
8227                 rssi_adjust = nla_data(
8228                         attrs[NL80211_ATTR_SCHED_SCAN_RSSI_ADJUST]);
8229                 request->rssi_adjust.band = rssi_adjust->band;
8230                 request->rssi_adjust.delta = rssi_adjust->delta;
8231                 if (!is_band_valid(wiphy, request->rssi_adjust.band)) {
8232                         err = -EINVAL;
8233                         goto out_free;
8234                 }
8235         }
8236
8237         err = nl80211_parse_sched_scan_plans(wiphy, n_plans, request, attrs);
8238         if (err)
8239                 goto out_free;
8240
8241         request->scan_start = jiffies;
8242
8243         return request;
8244
8245 out_free:
8246         kfree(request);
8247         return ERR_PTR(err);
8248 }
8249
8250 static int nl80211_start_sched_scan(struct sk_buff *skb,
8251                                     struct genl_info *info)
8252 {
8253         struct cfg80211_registered_device *rdev = info->user_ptr[0];
8254         struct net_device *dev = info->user_ptr[1];
8255         struct wireless_dev *wdev = dev->ieee80211_ptr;
8256         struct cfg80211_sched_scan_request *sched_scan_req;
8257         bool want_multi;
8258         int err;
8259
8260         if (!rdev->wiphy.max_sched_scan_reqs || !rdev->ops->sched_scan_start)
8261                 return -EOPNOTSUPP;
8262
8263         want_multi = info->attrs[NL80211_ATTR_SCHED_SCAN_MULTI];
8264         err = cfg80211_sched_scan_req_possible(rdev, want_multi);
8265         if (err)
8266                 return err;
8267
8268         sched_scan_req = nl80211_parse_sched_scan(&rdev->wiphy, wdev,
8269                                                   info->attrs,
8270                                                   rdev->wiphy.max_match_sets);
8271
8272         err = PTR_ERR_OR_ZERO(sched_scan_req);
8273         if (err)
8274                 goto out_err;
8275
8276         /* leave request id zero for legacy request
8277          * or if driver does not support multi-scheduled scan
8278          */
8279         if (want_multi && rdev->wiphy.max_sched_scan_reqs > 1)
8280                 sched_scan_req->reqid = cfg80211_assign_cookie(rdev);
8281
8282         err = rdev_sched_scan_start(rdev, dev, sched_scan_req);
8283         if (err)
8284                 goto out_free;
8285
8286         sched_scan_req->dev = dev;
8287         sched_scan_req->wiphy = &rdev->wiphy;
8288
8289         if (info->attrs[NL80211_ATTR_SOCKET_OWNER])
8290                 sched_scan_req->owner_nlportid = info->snd_portid;
8291
8292         cfg80211_add_sched_scan_req(rdev, sched_scan_req);
8293
8294         nl80211_send_sched_scan(sched_scan_req, NL80211_CMD_START_SCHED_SCAN);
8295         return 0;
8296
8297 out_free:
8298         kfree(sched_scan_req);
8299 out_err:
8300         return err;
8301 }
8302
8303 static int nl80211_stop_sched_scan(struct sk_buff *skb,
8304                                    struct genl_info *info)
8305 {
8306         struct cfg80211_sched_scan_request *req;
8307         struct cfg80211_registered_device *rdev = info->user_ptr[0];
8308         u64 cookie;
8309
8310         if (!rdev->wiphy.max_sched_scan_reqs || !rdev->ops->sched_scan_stop)
8311                 return -EOPNOTSUPP;
8312
8313         if (info->attrs[NL80211_ATTR_COOKIE]) {
8314                 cookie = nla_get_u64(info->attrs[NL80211_ATTR_COOKIE]);
8315                 return __cfg80211_stop_sched_scan(rdev, cookie, false);
8316         }
8317
8318         req = list_first_or_null_rcu(&rdev->sched_scan_req_list,
8319                                      struct cfg80211_sched_scan_request,
8320                                      list);
8321         if (!req || req->reqid ||
8322             (req->owner_nlportid &&
8323              req->owner_nlportid != info->snd_portid))
8324                 return -ENOENT;
8325
8326         return cfg80211_stop_sched_scan_req(rdev, req, false);
8327 }
8328
8329 static int nl80211_start_radar_detection(struct sk_buff *skb,
8330                                          struct genl_info *info)
8331 {
8332         struct cfg80211_registered_device *rdev = info->user_ptr[0];
8333         struct net_device *dev = info->user_ptr[1];
8334         struct wireless_dev *wdev = dev->ieee80211_ptr;
8335         struct wiphy *wiphy = wdev->wiphy;
8336         struct cfg80211_chan_def chandef;
8337         enum nl80211_dfs_regions dfs_region;
8338         unsigned int cac_time_ms;
8339         int err;
8340
8341         dfs_region = reg_get_dfs_region(wiphy);
8342         if (dfs_region == NL80211_DFS_UNSET)
8343                 return -EINVAL;
8344
8345         err = nl80211_parse_chandef(rdev, info, &chandef);
8346         if (err)
8347                 return err;
8348
8349         if (netif_carrier_ok(dev))
8350                 return -EBUSY;
8351
8352         if (wdev->cac_started)
8353                 return -EBUSY;
8354
8355         err = cfg80211_chandef_dfs_required(wiphy, &chandef, wdev->iftype);
8356         if (err < 0)
8357                 return err;
8358
8359         if (err == 0)
8360                 return -EINVAL;
8361
8362         if (!cfg80211_chandef_dfs_usable(wiphy, &chandef))
8363                 return -EINVAL;
8364
8365         /* CAC start is offloaded to HW and can't be started manually */
8366         if (wiphy_ext_feature_isset(wiphy, NL80211_EXT_FEATURE_DFS_OFFLOAD))
8367                 return -EOPNOTSUPP;
8368
8369         if (!rdev->ops->start_radar_detection)
8370                 return -EOPNOTSUPP;
8371
8372         cac_time_ms = cfg80211_chandef_dfs_cac_time(&rdev->wiphy, &chandef);
8373         if (WARN_ON(!cac_time_ms))
8374                 cac_time_ms = IEEE80211_DFS_MIN_CAC_TIME_MS;
8375
8376         err = rdev_start_radar_detection(rdev, dev, &chandef, cac_time_ms);
8377         if (!err) {
8378                 wdev->chandef = chandef;
8379                 wdev->cac_started = true;
8380                 wdev->cac_start_time = jiffies;
8381                 wdev->cac_time_ms = cac_time_ms;
8382         }
8383         return err;
8384 }
8385
8386 static int nl80211_notify_radar_detection(struct sk_buff *skb,
8387                                           struct genl_info *info)
8388 {
8389         struct cfg80211_registered_device *rdev = info->user_ptr[0];
8390         struct net_device *dev = info->user_ptr[1];
8391         struct wireless_dev *wdev = dev->ieee80211_ptr;
8392         struct wiphy *wiphy = wdev->wiphy;
8393         struct cfg80211_chan_def chandef;
8394         enum nl80211_dfs_regions dfs_region;
8395         int err;
8396
8397         dfs_region = reg_get_dfs_region(wiphy);
8398         if (dfs_region == NL80211_DFS_UNSET) {
8399                 GENL_SET_ERR_MSG(info,
8400                                  "DFS Region is not set. Unexpected Radar indication");
8401                 return -EINVAL;
8402         }
8403
8404         err = nl80211_parse_chandef(rdev, info, &chandef);
8405         if (err) {
8406                 GENL_SET_ERR_MSG(info, "Unable to extract chandef info");
8407                 return err;
8408         }
8409
8410         err = cfg80211_chandef_dfs_required(wiphy, &chandef, wdev->iftype);
8411         if (err < 0) {
8412                 GENL_SET_ERR_MSG(info, "chandef is invalid");
8413                 return err;
8414         }
8415
8416         if (err == 0) {
8417                 GENL_SET_ERR_MSG(info,
8418                                  "Unexpected Radar indication for chandef/iftype");
8419                 return -EINVAL;
8420         }
8421
8422         /* Do not process this notification if radar is already detected
8423          * by kernel on this channel, and return success.
8424          */
8425         if (chandef.chan->dfs_state == NL80211_DFS_UNAVAILABLE)
8426                 return 0;
8427
8428         cfg80211_set_dfs_state(wiphy, &chandef, NL80211_DFS_UNAVAILABLE);
8429
8430         cfg80211_sched_dfs_chan_update(rdev);
8431
8432         rdev->radar_chandef = chandef;
8433
8434         /* Propagate this notification to other radios as well */
8435         queue_work(cfg80211_wq, &rdev->propagate_radar_detect_wk);
8436
8437         return 0;
8438 }
8439
8440 static int nl80211_channel_switch(struct sk_buff *skb, struct genl_info *info)
8441 {
8442         struct cfg80211_registered_device *rdev = info->user_ptr[0];
8443         struct net_device *dev = info->user_ptr[1];
8444         struct wireless_dev *wdev = dev->ieee80211_ptr;
8445         struct cfg80211_csa_settings params;
8446         /* csa_attrs is defined static to avoid waste of stack size - this
8447          * function is called under RTNL lock, so this should not be a problem.
8448          */
8449         static struct nlattr *csa_attrs[NL80211_ATTR_MAX+1];
8450         int err;
8451         bool need_new_beacon = false;
8452         bool need_handle_dfs_flag = true;
8453         int len, i;
8454         u32 cs_count;
8455
8456         if (!rdev->ops->channel_switch ||
8457             !(rdev->wiphy.flags & WIPHY_FLAG_HAS_CHANNEL_SWITCH))
8458                 return -EOPNOTSUPP;
8459
8460         switch (dev->ieee80211_ptr->iftype) {
8461         case NL80211_IFTYPE_AP:
8462         case NL80211_IFTYPE_P2P_GO:
8463                 need_new_beacon = true;
8464                 /* For all modes except AP the handle_dfs flag needs to be
8465                  * supplied to tell the kernel that userspace will handle radar
8466                  * events when they happen. Otherwise a switch to a channel
8467                  * requiring DFS will be rejected.
8468                  */
8469                 need_handle_dfs_flag = false;
8470
8471                 /* useless if AP is not running */
8472                 if (!wdev->beacon_interval)
8473                         return -ENOTCONN;
8474                 break;
8475         case NL80211_IFTYPE_ADHOC:
8476                 if (!wdev->ssid_len)
8477                         return -ENOTCONN;
8478                 break;
8479         case NL80211_IFTYPE_MESH_POINT:
8480                 if (!wdev->mesh_id_len)
8481                         return -ENOTCONN;
8482                 break;
8483         default:
8484                 return -EOPNOTSUPP;
8485         }
8486
8487         memset(&params, 0, sizeof(params));
8488         params.beacon_csa.ftm_responder = -1;
8489
8490         if (!info->attrs[NL80211_ATTR_WIPHY_FREQ] ||
8491             !info->attrs[NL80211_ATTR_CH_SWITCH_COUNT])
8492                 return -EINVAL;
8493
8494         /* only important for AP, IBSS and mesh create IEs internally */
8495         if (need_new_beacon && !info->attrs[NL80211_ATTR_CSA_IES])
8496                 return -EINVAL;
8497
8498         /* Even though the attribute is u32, the specification says
8499          * u8, so let's make sure we don't overflow.
8500          */
8501         cs_count = nla_get_u32(info->attrs[NL80211_ATTR_CH_SWITCH_COUNT]);
8502         if (cs_count > 255)
8503                 return -EINVAL;
8504
8505         params.count = cs_count;
8506
8507         if (!need_new_beacon)
8508                 goto skip_beacons;
8509
8510         err = nl80211_parse_beacon(rdev, info->attrs, &params.beacon_after);
8511         if (err)
8512                 return err;
8513
8514         err = nla_parse_nested_deprecated(csa_attrs, NL80211_ATTR_MAX,
8515                                           info->attrs[NL80211_ATTR_CSA_IES],
8516                                           nl80211_policy, info->extack);
8517         if (err)
8518                 return err;
8519
8520         err = nl80211_parse_beacon(rdev, csa_attrs, &params.beacon_csa);
8521         if (err)
8522                 return err;
8523
8524         if (!csa_attrs[NL80211_ATTR_CSA_C_OFF_BEACON])
8525                 return -EINVAL;
8526
8527         len = nla_len(csa_attrs[NL80211_ATTR_CSA_C_OFF_BEACON]);
8528         if (!len || (len % sizeof(u16)))
8529                 return -EINVAL;
8530
8531         params.n_counter_offsets_beacon = len / sizeof(u16);
8532         if (rdev->wiphy.max_num_csa_counters &&
8533             (params.n_counter_offsets_beacon >
8534              rdev->wiphy.max_num_csa_counters))
8535                 return -EINVAL;
8536
8537         params.counter_offsets_beacon =
8538                 nla_data(csa_attrs[NL80211_ATTR_CSA_C_OFF_BEACON]);
8539
8540         /* sanity checks - counters should fit and be the same */
8541         for (i = 0; i < params.n_counter_offsets_beacon; i++) {
8542                 u16 offset = params.counter_offsets_beacon[i];
8543
8544                 if (offset >= params.beacon_csa.tail_len)
8545                         return -EINVAL;
8546
8547                 if (params.beacon_csa.tail[offset] != params.count)
8548                         return -EINVAL;
8549         }
8550
8551         if (csa_attrs[NL80211_ATTR_CSA_C_OFF_PRESP]) {
8552                 len = nla_len(csa_attrs[NL80211_ATTR_CSA_C_OFF_PRESP]);
8553                 if (!len || (len % sizeof(u16)))
8554                         return -EINVAL;
8555
8556                 params.n_counter_offsets_presp = len / sizeof(u16);
8557                 if (rdev->wiphy.max_num_csa_counters &&
8558                     (params.n_counter_offsets_presp >
8559                      rdev->wiphy.max_num_csa_counters))
8560                         return -EINVAL;
8561
8562                 params.counter_offsets_presp =
8563                         nla_data(csa_attrs[NL80211_ATTR_CSA_C_OFF_PRESP]);
8564
8565                 /* sanity checks - counters should fit and be the same */
8566                 for (i = 0; i < params.n_counter_offsets_presp; i++) {
8567                         u16 offset = params.counter_offsets_presp[i];
8568
8569                         if (offset >= params.beacon_csa.probe_resp_len)
8570                                 return -EINVAL;
8571
8572                         if (params.beacon_csa.probe_resp[offset] !=
8573                             params.count)
8574                                 return -EINVAL;
8575                 }
8576         }
8577
8578 skip_beacons:
8579         err = nl80211_parse_chandef(rdev, info, &params.chandef);
8580         if (err)
8581                 return err;
8582
8583         if (!cfg80211_reg_can_beacon_relax(&rdev->wiphy, &params.chandef,
8584                                            wdev->iftype))
8585                 return -EINVAL;
8586
8587         err = cfg80211_chandef_dfs_required(wdev->wiphy,
8588                                             &params.chandef,
8589                                             wdev->iftype);
8590         if (err < 0)
8591                 return err;
8592
8593         if (err > 0) {
8594                 params.radar_required = true;
8595                 if (need_handle_dfs_flag &&
8596                     !nla_get_flag(info->attrs[NL80211_ATTR_HANDLE_DFS])) {
8597                         return -EINVAL;
8598                 }
8599         }
8600
8601         if (info->attrs[NL80211_ATTR_CH_SWITCH_BLOCK_TX])
8602                 params.block_tx = true;
8603
8604         wdev_lock(wdev);
8605         err = rdev_channel_switch(rdev, dev, &params);
8606         wdev_unlock(wdev);
8607
8608         return err;
8609 }
8610
8611 static int nl80211_send_bss(struct sk_buff *msg, struct netlink_callback *cb,
8612                             u32 seq, int flags,
8613                             struct cfg80211_registered_device *rdev,
8614                             struct wireless_dev *wdev,
8615                             struct cfg80211_internal_bss *intbss)
8616 {
8617         struct cfg80211_bss *res = &intbss->pub;
8618         const struct cfg80211_bss_ies *ies;
8619         void *hdr;
8620         struct nlattr *bss;
8621
8622         ASSERT_WDEV_LOCK(wdev);
8623
8624         hdr = nl80211hdr_put(msg, NETLINK_CB(cb->skb).portid, seq, flags,
8625                              NL80211_CMD_NEW_SCAN_RESULTS);
8626         if (!hdr)
8627                 return -1;
8628
8629         genl_dump_check_consistent(cb, hdr);
8630
8631         if (nla_put_u32(msg, NL80211_ATTR_GENERATION, rdev->bss_generation))
8632                 goto nla_put_failure;
8633         if (wdev->netdev &&
8634             nla_put_u32(msg, NL80211_ATTR_IFINDEX, wdev->netdev->ifindex))
8635                 goto nla_put_failure;
8636         if (nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
8637                               NL80211_ATTR_PAD))
8638                 goto nla_put_failure;
8639
8640         bss = nla_nest_start_noflag(msg, NL80211_ATTR_BSS);
8641         if (!bss)
8642                 goto nla_put_failure;
8643         if ((!is_zero_ether_addr(res->bssid) &&
8644              nla_put(msg, NL80211_BSS_BSSID, ETH_ALEN, res->bssid)))
8645                 goto nla_put_failure;
8646
8647         rcu_read_lock();
8648         /* indicate whether we have probe response data or not */
8649         if (rcu_access_pointer(res->proberesp_ies) &&
8650             nla_put_flag(msg, NL80211_BSS_PRESP_DATA))
8651                 goto fail_unlock_rcu;
8652
8653         /* this pointer prefers to be pointed to probe response data
8654          * but is always valid
8655          */
8656         ies = rcu_dereference(res->ies);
8657         if (ies) {
8658                 if (nla_put_u64_64bit(msg, NL80211_BSS_TSF, ies->tsf,
8659                                       NL80211_BSS_PAD))
8660                         goto fail_unlock_rcu;
8661                 if (ies->len && nla_put(msg, NL80211_BSS_INFORMATION_ELEMENTS,
8662                                         ies->len, ies->data))
8663                         goto fail_unlock_rcu;
8664         }
8665
8666         /* and this pointer is always (unless driver didn't know) beacon data */
8667         ies = rcu_dereference(res->beacon_ies);
8668         if (ies && ies->from_beacon) {
8669                 if (nla_put_u64_64bit(msg, NL80211_BSS_BEACON_TSF, ies->tsf,
8670                                       NL80211_BSS_PAD))
8671                         goto fail_unlock_rcu;
8672                 if (ies->len && nla_put(msg, NL80211_BSS_BEACON_IES,
8673                                         ies->len, ies->data))
8674                         goto fail_unlock_rcu;
8675         }
8676         rcu_read_unlock();
8677
8678         if (res->beacon_interval &&
8679             nla_put_u16(msg, NL80211_BSS_BEACON_INTERVAL, res->beacon_interval))
8680                 goto nla_put_failure;
8681         if (nla_put_u16(msg, NL80211_BSS_CAPABILITY, res->capability) ||
8682             nla_put_u32(msg, NL80211_BSS_FREQUENCY, res->channel->center_freq) ||
8683             nla_put_u32(msg, NL80211_BSS_CHAN_WIDTH, res->scan_width) ||
8684             nla_put_u32(msg, NL80211_BSS_SEEN_MS_AGO,
8685                         jiffies_to_msecs(jiffies - intbss->ts)))
8686                 goto nla_put_failure;
8687
8688         if (intbss->parent_tsf &&
8689             (nla_put_u64_64bit(msg, NL80211_BSS_PARENT_TSF,
8690                                intbss->parent_tsf, NL80211_BSS_PAD) ||
8691              nla_put(msg, NL80211_BSS_PARENT_BSSID, ETH_ALEN,
8692                      intbss->parent_bssid)))
8693                 goto nla_put_failure;
8694
8695         if (intbss->ts_boottime &&
8696             nla_put_u64_64bit(msg, NL80211_BSS_LAST_SEEN_BOOTTIME,
8697                               intbss->ts_boottime, NL80211_BSS_PAD))
8698                 goto nla_put_failure;
8699
8700         if (!nl80211_put_signal(msg, intbss->pub.chains,
8701                                 intbss->pub.chain_signal,
8702                                 NL80211_BSS_CHAIN_SIGNAL))
8703                 goto nla_put_failure;
8704
8705         switch (rdev->wiphy.signal_type) {
8706         case CFG80211_SIGNAL_TYPE_MBM:
8707                 if (nla_put_u32(msg, NL80211_BSS_SIGNAL_MBM, res->signal))
8708                         goto nla_put_failure;
8709                 break;
8710         case CFG80211_SIGNAL_TYPE_UNSPEC:
8711                 if (nla_put_u8(msg, NL80211_BSS_SIGNAL_UNSPEC, res->signal))
8712                         goto nla_put_failure;
8713                 break;
8714         default:
8715                 break;
8716         }
8717
8718         switch (wdev->iftype) {
8719         case NL80211_IFTYPE_P2P_CLIENT:
8720         case NL80211_IFTYPE_STATION:
8721                 if (intbss == wdev->current_bss &&
8722                     nla_put_u32(msg, NL80211_BSS_STATUS,
8723                                 NL80211_BSS_STATUS_ASSOCIATED))
8724                         goto nla_put_failure;
8725                 break;
8726         case NL80211_IFTYPE_ADHOC:
8727                 if (intbss == wdev->current_bss &&
8728                     nla_put_u32(msg, NL80211_BSS_STATUS,
8729                                 NL80211_BSS_STATUS_IBSS_JOINED))
8730                         goto nla_put_failure;
8731                 break;
8732         default:
8733                 break;
8734         }
8735
8736         nla_nest_end(msg, bss);
8737
8738         genlmsg_end(msg, hdr);
8739         return 0;
8740
8741  fail_unlock_rcu:
8742         rcu_read_unlock();
8743  nla_put_failure:
8744         genlmsg_cancel(msg, hdr);
8745         return -EMSGSIZE;
8746 }
8747
8748 static int nl80211_dump_scan(struct sk_buff *skb, struct netlink_callback *cb)
8749 {
8750         struct cfg80211_registered_device *rdev;
8751         struct cfg80211_internal_bss *scan;
8752         struct wireless_dev *wdev;
8753         int start = cb->args[2], idx = 0;
8754         int err;
8755
8756         rtnl_lock();
8757         err = nl80211_prepare_wdev_dump(cb, &rdev, &wdev);
8758         if (err) {
8759                 rtnl_unlock();
8760                 return err;
8761         }
8762
8763         wdev_lock(wdev);
8764         spin_lock_bh(&rdev->bss_lock);
8765
8766         /*
8767          * dump_scan will be called multiple times to break up the scan results
8768          * into multiple messages.  It is unlikely that any more bss-es will be
8769          * expired after the first call, so only call only call this on the
8770          * first dump_scan invocation.
8771          */
8772         if (start == 0)
8773                 cfg80211_bss_expire(rdev);
8774
8775         cb->seq = rdev->bss_generation;
8776
8777         list_for_each_entry(scan, &rdev->bss_list, list) {
8778                 if (++idx <= start)
8779                         continue;
8780                 if (nl80211_send_bss(skb, cb,
8781                                 cb->nlh->nlmsg_seq, NLM_F_MULTI,
8782                                 rdev, wdev, scan) < 0) {
8783                         idx--;
8784                         break;
8785                 }
8786         }
8787
8788         spin_unlock_bh(&rdev->bss_lock);
8789         wdev_unlock(wdev);
8790
8791         cb->args[2] = idx;
8792         rtnl_unlock();
8793
8794         return skb->len;
8795 }
8796
8797 static int nl80211_send_survey(struct sk_buff *msg, u32 portid, u32 seq,
8798                                int flags, struct net_device *dev,
8799                                bool allow_radio_stats,
8800                                struct survey_info *survey)
8801 {
8802         void *hdr;
8803         struct nlattr *infoattr;
8804
8805         /* skip radio stats if userspace didn't request them */
8806         if (!survey->channel && !allow_radio_stats)
8807                 return 0;
8808
8809         hdr = nl80211hdr_put(msg, portid, seq, flags,
8810                              NL80211_CMD_NEW_SURVEY_RESULTS);
8811         if (!hdr)
8812                 return -ENOMEM;
8813
8814         if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex))
8815                 goto nla_put_failure;
8816
8817         infoattr = nla_nest_start_noflag(msg, NL80211_ATTR_SURVEY_INFO);
8818         if (!infoattr)
8819                 goto nla_put_failure;
8820
8821         if (survey->channel &&
8822             nla_put_u32(msg, NL80211_SURVEY_INFO_FREQUENCY,
8823                         survey->channel->center_freq))
8824                 goto nla_put_failure;
8825
8826         if ((survey->filled & SURVEY_INFO_NOISE_DBM) &&
8827             nla_put_u8(msg, NL80211_SURVEY_INFO_NOISE, survey->noise))
8828                 goto nla_put_failure;
8829         if ((survey->filled & SURVEY_INFO_IN_USE) &&
8830             nla_put_flag(msg, NL80211_SURVEY_INFO_IN_USE))
8831                 goto nla_put_failure;
8832         if ((survey->filled & SURVEY_INFO_TIME) &&
8833             nla_put_u64_64bit(msg, NL80211_SURVEY_INFO_TIME,
8834                         survey->time, NL80211_SURVEY_INFO_PAD))
8835                 goto nla_put_failure;
8836         if ((survey->filled & SURVEY_INFO_TIME_BUSY) &&
8837             nla_put_u64_64bit(msg, NL80211_SURVEY_INFO_TIME_BUSY,
8838                               survey->time_busy, NL80211_SURVEY_INFO_PAD))
8839                 goto nla_put_failure;
8840         if ((survey->filled & SURVEY_INFO_TIME_EXT_BUSY) &&
8841             nla_put_u64_64bit(msg, NL80211_SURVEY_INFO_TIME_EXT_BUSY,
8842                               survey->time_ext_busy, NL80211_SURVEY_INFO_PAD))
8843                 goto nla_put_failure;
8844         if ((survey->filled & SURVEY_INFO_TIME_RX) &&
8845             nla_put_u64_64bit(msg, NL80211_SURVEY_INFO_TIME_RX,
8846                               survey->time_rx, NL80211_SURVEY_INFO_PAD))
8847                 goto nla_put_failure;
8848         if ((survey->filled & SURVEY_INFO_TIME_TX) &&
8849             nla_put_u64_64bit(msg, NL80211_SURVEY_INFO_TIME_TX,
8850                               survey->time_tx, NL80211_SURVEY_INFO_PAD))
8851                 goto nla_put_failure;
8852         if ((survey->filled & SURVEY_INFO_TIME_SCAN) &&
8853             nla_put_u64_64bit(msg, NL80211_SURVEY_INFO_TIME_SCAN,
8854                               survey->time_scan, NL80211_SURVEY_INFO_PAD))
8855                 goto nla_put_failure;
8856         if ((survey->filled & SURVEY_INFO_TIME_BSS_RX) &&
8857             nla_put_u64_64bit(msg, NL80211_SURVEY_INFO_TIME_BSS_RX,
8858                               survey->time_bss_rx, NL80211_SURVEY_INFO_PAD))
8859                 goto nla_put_failure;
8860
8861         nla_nest_end(msg, infoattr);
8862
8863         genlmsg_end(msg, hdr);
8864         return 0;
8865
8866  nla_put_failure:
8867         genlmsg_cancel(msg, hdr);
8868         return -EMSGSIZE;
8869 }
8870
8871 static int nl80211_dump_survey(struct sk_buff *skb, struct netlink_callback *cb)
8872 {
8873         struct nlattr **attrbuf;
8874         struct survey_info survey;
8875         struct cfg80211_registered_device *rdev;
8876         struct wireless_dev *wdev;
8877         int survey_idx = cb->args[2];
8878         int res;
8879         bool radio_stats;
8880
8881         attrbuf = kcalloc(NUM_NL80211_ATTR, sizeof(*attrbuf), GFP_KERNEL);
8882         if (!attrbuf)
8883                 return -ENOMEM;
8884
8885         rtnl_lock();
8886         res = nl80211_prepare_wdev_dump(cb, &rdev, &wdev);
8887         if (res)
8888                 goto out_err;
8889
8890         /* prepare_wdev_dump parsed the attributes */
8891         radio_stats = attrbuf[NL80211_ATTR_SURVEY_RADIO_STATS];
8892
8893         if (!wdev->netdev) {
8894                 res = -EINVAL;
8895                 goto out_err;
8896         }
8897
8898         if (!rdev->ops->dump_survey) {
8899                 res = -EOPNOTSUPP;
8900                 goto out_err;
8901         }
8902
8903         while (1) {
8904                 res = rdev_dump_survey(rdev, wdev->netdev, survey_idx, &survey);
8905                 if (res == -ENOENT)
8906                         break;
8907                 if (res)
8908                         goto out_err;
8909
8910                 /* don't send disabled channels, but do send non-channel data */
8911                 if (survey.channel &&
8912                     survey.channel->flags & IEEE80211_CHAN_DISABLED) {
8913                         survey_idx++;
8914                         continue;
8915                 }
8916
8917                 if (nl80211_send_survey(skb,
8918                                 NETLINK_CB(cb->skb).portid,
8919                                 cb->nlh->nlmsg_seq, NLM_F_MULTI,
8920                                 wdev->netdev, radio_stats, &survey) < 0)
8921                         goto out;
8922                 survey_idx++;
8923         }
8924
8925  out:
8926         cb->args[2] = survey_idx;
8927         res = skb->len;
8928  out_err:
8929         kfree(attrbuf);
8930         rtnl_unlock();
8931         return res;
8932 }
8933
8934 static bool nl80211_valid_wpa_versions(u32 wpa_versions)
8935 {
8936         return !(wpa_versions & ~(NL80211_WPA_VERSION_1 |
8937                                   NL80211_WPA_VERSION_2 |
8938                                   NL80211_WPA_VERSION_3));
8939 }
8940
8941 static int nl80211_authenticate(struct sk_buff *skb, struct genl_info *info)
8942 {
8943         struct cfg80211_registered_device *rdev = info->user_ptr[0];
8944         struct net_device *dev = info->user_ptr[1];
8945         struct ieee80211_channel *chan;
8946         const u8 *bssid, *ssid, *ie = NULL, *auth_data = NULL;
8947         int err, ssid_len, ie_len = 0, auth_data_len = 0;
8948         enum nl80211_auth_type auth_type;
8949         struct key_parse key;
8950         bool local_state_change;
8951
8952         if (!info->attrs[NL80211_ATTR_MAC])
8953                 return -EINVAL;
8954
8955         if (!info->attrs[NL80211_ATTR_AUTH_TYPE])
8956                 return -EINVAL;
8957
8958         if (!info->attrs[NL80211_ATTR_SSID])
8959                 return -EINVAL;
8960
8961         if (!info->attrs[NL80211_ATTR_WIPHY_FREQ])
8962                 return -EINVAL;
8963
8964         err = nl80211_parse_key(info, &key);
8965         if (err)
8966                 return err;
8967
8968         if (key.idx >= 0) {
8969                 if (key.type != -1 && key.type != NL80211_KEYTYPE_GROUP)
8970                         return -EINVAL;
8971                 if (!key.p.key || !key.p.key_len)
8972                         return -EINVAL;
8973                 if ((key.p.cipher != WLAN_CIPHER_SUITE_WEP40 ||
8974                      key.p.key_len != WLAN_KEY_LEN_WEP40) &&
8975                     (key.p.cipher != WLAN_CIPHER_SUITE_WEP104 ||
8976                      key.p.key_len != WLAN_KEY_LEN_WEP104))
8977                         return -EINVAL;
8978                 if (key.idx > 3)
8979                         return -EINVAL;
8980         } else {
8981                 key.p.key_len = 0;
8982                 key.p.key = NULL;
8983         }
8984
8985         if (key.idx >= 0) {
8986                 int i;
8987                 bool ok = false;
8988
8989                 for (i = 0; i < rdev->wiphy.n_cipher_suites; i++) {
8990                         if (key.p.cipher == rdev->wiphy.cipher_suites[i]) {
8991                                 ok = true;
8992                                 break;
8993                         }
8994                 }
8995                 if (!ok)
8996                         return -EINVAL;
8997         }
8998
8999         if (!rdev->ops->auth)
9000                 return -EOPNOTSUPP;
9001
9002         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
9003             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
9004                 return -EOPNOTSUPP;
9005
9006         bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
9007         chan = nl80211_get_valid_chan(&rdev->wiphy,
9008                                       info->attrs[NL80211_ATTR_WIPHY_FREQ]);
9009         if (!chan)
9010                 return -EINVAL;
9011
9012         ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
9013         ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
9014
9015         if (info->attrs[NL80211_ATTR_IE]) {
9016                 ie = nla_data(info->attrs[NL80211_ATTR_IE]);
9017                 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
9018         }
9019
9020         auth_type = nla_get_u32(info->attrs[NL80211_ATTR_AUTH_TYPE]);
9021         if (!nl80211_valid_auth_type(rdev, auth_type, NL80211_CMD_AUTHENTICATE))
9022                 return -EINVAL;
9023
9024         if ((auth_type == NL80211_AUTHTYPE_SAE ||
9025              auth_type == NL80211_AUTHTYPE_FILS_SK ||
9026              auth_type == NL80211_AUTHTYPE_FILS_SK_PFS ||
9027              auth_type == NL80211_AUTHTYPE_FILS_PK) &&
9028             !info->attrs[NL80211_ATTR_AUTH_DATA])
9029                 return -EINVAL;
9030
9031         if (info->attrs[NL80211_ATTR_AUTH_DATA]) {
9032                 if (auth_type != NL80211_AUTHTYPE_SAE &&
9033                     auth_type != NL80211_AUTHTYPE_FILS_SK &&
9034                     auth_type != NL80211_AUTHTYPE_FILS_SK_PFS &&
9035                     auth_type != NL80211_AUTHTYPE_FILS_PK)
9036                         return -EINVAL;
9037                 auth_data = nla_data(info->attrs[NL80211_ATTR_AUTH_DATA]);
9038                 auth_data_len = nla_len(info->attrs[NL80211_ATTR_AUTH_DATA]);
9039                 /* need to include at least Auth Transaction and Status Code */
9040                 if (auth_data_len < 4)
9041                         return -EINVAL;
9042         }
9043
9044         local_state_change = !!info->attrs[NL80211_ATTR_LOCAL_STATE_CHANGE];
9045
9046         /*
9047          * Since we no longer track auth state, ignore
9048          * requests to only change local state.
9049          */
9050         if (local_state_change)
9051                 return 0;
9052
9053         wdev_lock(dev->ieee80211_ptr);
9054         err = cfg80211_mlme_auth(rdev, dev, chan, auth_type, bssid,
9055                                  ssid, ssid_len, ie, ie_len,
9056                                  key.p.key, key.p.key_len, key.idx,
9057                                  auth_data, auth_data_len);
9058         wdev_unlock(dev->ieee80211_ptr);
9059         return err;
9060 }
9061
9062 static int validate_pae_over_nl80211(struct cfg80211_registered_device *rdev,
9063                                      struct genl_info *info)
9064 {
9065         if (!info->attrs[NL80211_ATTR_SOCKET_OWNER]) {
9066                 GENL_SET_ERR_MSG(info, "SOCKET_OWNER not set");
9067                 return -EINVAL;
9068         }
9069
9070         if (!rdev->ops->tx_control_port ||
9071             !wiphy_ext_feature_isset(&rdev->wiphy,
9072                                      NL80211_EXT_FEATURE_CONTROL_PORT_OVER_NL80211))
9073                 return -EOPNOTSUPP;
9074
9075         return 0;
9076 }
9077
9078 static int nl80211_crypto_settings(struct cfg80211_registered_device *rdev,
9079                                    struct genl_info *info,
9080                                    struct cfg80211_crypto_settings *settings,
9081                                    int cipher_limit)
9082 {
9083         memset(settings, 0, sizeof(*settings));
9084
9085         settings->control_port = info->attrs[NL80211_ATTR_CONTROL_PORT];
9086
9087         if (info->attrs[NL80211_ATTR_CONTROL_PORT_ETHERTYPE]) {
9088                 u16 proto;
9089
9090                 proto = nla_get_u16(
9091                         info->attrs[NL80211_ATTR_CONTROL_PORT_ETHERTYPE]);
9092                 settings->control_port_ethertype = cpu_to_be16(proto);
9093                 if (!(rdev->wiphy.flags & WIPHY_FLAG_CONTROL_PORT_PROTOCOL) &&
9094                     proto != ETH_P_PAE)
9095                         return -EINVAL;
9096                 if (info->attrs[NL80211_ATTR_CONTROL_PORT_NO_ENCRYPT])
9097                         settings->control_port_no_encrypt = true;
9098         } else
9099                 settings->control_port_ethertype = cpu_to_be16(ETH_P_PAE);
9100
9101         if (info->attrs[NL80211_ATTR_CONTROL_PORT_OVER_NL80211]) {
9102                 int r = validate_pae_over_nl80211(rdev, info);
9103
9104                 if (r < 0)
9105                         return r;
9106
9107                 settings->control_port_over_nl80211 = true;
9108         }
9109
9110         if (info->attrs[NL80211_ATTR_CIPHER_SUITES_PAIRWISE]) {
9111                 void *data;
9112                 int len, i;
9113
9114                 data = nla_data(info->attrs[NL80211_ATTR_CIPHER_SUITES_PAIRWISE]);
9115                 len = nla_len(info->attrs[NL80211_ATTR_CIPHER_SUITES_PAIRWISE]);
9116                 settings->n_ciphers_pairwise = len / sizeof(u32);
9117
9118                 if (len % sizeof(u32))
9119                         return -EINVAL;
9120
9121                 if (settings->n_ciphers_pairwise > cipher_limit)
9122                         return -EINVAL;
9123
9124                 memcpy(settings->ciphers_pairwise, data, len);
9125
9126                 for (i = 0; i < settings->n_ciphers_pairwise; i++)
9127                         if (!cfg80211_supported_cipher_suite(
9128                                         &rdev->wiphy,
9129                                         settings->ciphers_pairwise[i]))
9130                                 return -EINVAL;
9131         }
9132
9133         if (info->attrs[NL80211_ATTR_CIPHER_SUITE_GROUP]) {
9134                 settings->cipher_group =
9135                         nla_get_u32(info->attrs[NL80211_ATTR_CIPHER_SUITE_GROUP]);
9136                 if (!cfg80211_supported_cipher_suite(&rdev->wiphy,
9137                                                      settings->cipher_group))
9138                         return -EINVAL;
9139         }
9140
9141         if (info->attrs[NL80211_ATTR_WPA_VERSIONS]) {
9142                 settings->wpa_versions =
9143                         nla_get_u32(info->attrs[NL80211_ATTR_WPA_VERSIONS]);
9144                 if (!nl80211_valid_wpa_versions(settings->wpa_versions))
9145                         return -EINVAL;
9146         }
9147
9148         if (info->attrs[NL80211_ATTR_AKM_SUITES]) {
9149                 void *data;
9150                 int len;
9151
9152                 data = nla_data(info->attrs[NL80211_ATTR_AKM_SUITES]);
9153                 len = nla_len(info->attrs[NL80211_ATTR_AKM_SUITES]);
9154                 settings->n_akm_suites = len / sizeof(u32);
9155
9156                 if (len % sizeof(u32))
9157                         return -EINVAL;
9158
9159                 if (settings->n_akm_suites > NL80211_MAX_NR_AKM_SUITES)
9160                         return -EINVAL;
9161
9162                 memcpy(settings->akm_suites, data, len);
9163         }
9164
9165         if (info->attrs[NL80211_ATTR_PMK]) {
9166                 if (nla_len(info->attrs[NL80211_ATTR_PMK]) != WLAN_PMK_LEN)
9167                         return -EINVAL;
9168                 if (!wiphy_ext_feature_isset(&rdev->wiphy,
9169                                              NL80211_EXT_FEATURE_4WAY_HANDSHAKE_STA_PSK))
9170                         return -EINVAL;
9171                 settings->psk = nla_data(info->attrs[NL80211_ATTR_PMK]);
9172         }
9173
9174         if (info->attrs[NL80211_ATTR_SAE_PASSWORD]) {
9175                 if (!wiphy_ext_feature_isset(&rdev->wiphy,
9176                                              NL80211_EXT_FEATURE_SAE_OFFLOAD))
9177                         return -EINVAL;
9178                 settings->sae_pwd =
9179                         nla_data(info->attrs[NL80211_ATTR_SAE_PASSWORD]);
9180                 settings->sae_pwd_len =
9181                         nla_len(info->attrs[NL80211_ATTR_SAE_PASSWORD]);
9182         }
9183
9184         return 0;
9185 }
9186
9187 static int nl80211_associate(struct sk_buff *skb, struct genl_info *info)
9188 {
9189         struct cfg80211_registered_device *rdev = info->user_ptr[0];
9190         struct net_device *dev = info->user_ptr[1];
9191         struct ieee80211_channel *chan;
9192         struct cfg80211_assoc_request req = {};
9193         const u8 *bssid, *ssid;
9194         int err, ssid_len = 0;
9195
9196         if (dev->ieee80211_ptr->conn_owner_nlportid &&
9197             dev->ieee80211_ptr->conn_owner_nlportid != info->snd_portid)
9198                 return -EPERM;
9199
9200         if (!info->attrs[NL80211_ATTR_MAC] ||
9201             !info->attrs[NL80211_ATTR_SSID] ||
9202             !info->attrs[NL80211_ATTR_WIPHY_FREQ])
9203                 return -EINVAL;
9204
9205         if (!rdev->ops->assoc)
9206                 return -EOPNOTSUPP;
9207
9208         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
9209             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
9210                 return -EOPNOTSUPP;
9211
9212         bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
9213
9214         chan = nl80211_get_valid_chan(&rdev->wiphy,
9215                                       info->attrs[NL80211_ATTR_WIPHY_FREQ]);
9216         if (!chan)
9217                 return -EINVAL;
9218
9219         ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
9220         ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
9221
9222         if (info->attrs[NL80211_ATTR_IE]) {
9223                 req.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
9224                 req.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
9225         }
9226
9227         if (info->attrs[NL80211_ATTR_USE_MFP]) {
9228                 enum nl80211_mfp mfp =
9229                         nla_get_u32(info->attrs[NL80211_ATTR_USE_MFP]);
9230                 if (mfp == NL80211_MFP_REQUIRED)
9231                         req.use_mfp = true;
9232                 else if (mfp != NL80211_MFP_NO)
9233                         return -EINVAL;
9234         }
9235
9236         if (info->attrs[NL80211_ATTR_PREV_BSSID])
9237                 req.prev_bssid = nla_data(info->attrs[NL80211_ATTR_PREV_BSSID]);
9238
9239         if (nla_get_flag(info->attrs[NL80211_ATTR_DISABLE_HT]))
9240                 req.flags |= ASSOC_REQ_DISABLE_HT;
9241
9242         if (info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK])
9243                 memcpy(&req.ht_capa_mask,
9244                        nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]),
9245                        sizeof(req.ht_capa_mask));
9246
9247         if (info->attrs[NL80211_ATTR_HT_CAPABILITY]) {
9248                 if (!info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK])
9249                         return -EINVAL;
9250                 memcpy(&req.ht_capa,
9251                        nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]),
9252                        sizeof(req.ht_capa));
9253         }
9254
9255         if (nla_get_flag(info->attrs[NL80211_ATTR_DISABLE_VHT]))
9256                 req.flags |= ASSOC_REQ_DISABLE_VHT;
9257
9258         if (info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK])
9259                 memcpy(&req.vht_capa_mask,
9260                        nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK]),
9261                        sizeof(req.vht_capa_mask));
9262
9263         if (info->attrs[NL80211_ATTR_VHT_CAPABILITY]) {
9264                 if (!info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK])
9265                         return -EINVAL;
9266                 memcpy(&req.vht_capa,
9267                        nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY]),
9268                        sizeof(req.vht_capa));
9269         }
9270
9271         if (nla_get_flag(info->attrs[NL80211_ATTR_USE_RRM])) {
9272                 if (!((rdev->wiphy.features &
9273                         NL80211_FEATURE_DS_PARAM_SET_IE_IN_PROBES) &&
9274                        (rdev->wiphy.features & NL80211_FEATURE_QUIET)) &&
9275                     !wiphy_ext_feature_isset(&rdev->wiphy,
9276                                              NL80211_EXT_FEATURE_RRM))
9277                         return -EINVAL;
9278                 req.flags |= ASSOC_REQ_USE_RRM;
9279         }
9280
9281         if (info->attrs[NL80211_ATTR_FILS_KEK]) {
9282                 req.fils_kek = nla_data(info->attrs[NL80211_ATTR_FILS_KEK]);
9283                 req.fils_kek_len = nla_len(info->attrs[NL80211_ATTR_FILS_KEK]);
9284                 if (!info->attrs[NL80211_ATTR_FILS_NONCES])
9285                         return -EINVAL;
9286                 req.fils_nonces =
9287                         nla_data(info->attrs[NL80211_ATTR_FILS_NONCES]);
9288         }
9289
9290         err = nl80211_crypto_settings(rdev, info, &req.crypto, 1);
9291         if (!err) {
9292                 wdev_lock(dev->ieee80211_ptr);
9293
9294                 err = cfg80211_mlme_assoc(rdev, dev, chan, bssid,
9295                                           ssid, ssid_len, &req);
9296
9297                 if (!err && info->attrs[NL80211_ATTR_SOCKET_OWNER]) {
9298                         dev->ieee80211_ptr->conn_owner_nlportid =
9299                                 info->snd_portid;
9300                         memcpy(dev->ieee80211_ptr->disconnect_bssid,
9301                                bssid, ETH_ALEN);
9302                 }
9303
9304                 wdev_unlock(dev->ieee80211_ptr);
9305         }
9306
9307         return err;
9308 }
9309
9310 static int nl80211_deauthenticate(struct sk_buff *skb, struct genl_info *info)
9311 {
9312         struct cfg80211_registered_device *rdev = info->user_ptr[0];
9313         struct net_device *dev = info->user_ptr[1];
9314         const u8 *ie = NULL, *bssid;
9315         int ie_len = 0, err;
9316         u16 reason_code;
9317         bool local_state_change;
9318
9319         if (dev->ieee80211_ptr->conn_owner_nlportid &&
9320             dev->ieee80211_ptr->conn_owner_nlportid != info->snd_portid)
9321                 return -EPERM;
9322
9323         if (!info->attrs[NL80211_ATTR_MAC])
9324                 return -EINVAL;
9325
9326         if (!info->attrs[NL80211_ATTR_REASON_CODE])
9327                 return -EINVAL;
9328
9329         if (!rdev->ops->deauth)
9330                 return -EOPNOTSUPP;
9331
9332         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
9333             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
9334                 return -EOPNOTSUPP;
9335
9336         bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
9337
9338         reason_code = nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]);
9339         if (reason_code == 0) {
9340                 /* Reason Code 0 is reserved */
9341                 return -EINVAL;
9342         }
9343
9344         if (info->attrs[NL80211_ATTR_IE]) {
9345                 ie = nla_data(info->attrs[NL80211_ATTR_IE]);
9346                 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
9347         }
9348
9349         local_state_change = !!info->attrs[NL80211_ATTR_LOCAL_STATE_CHANGE];
9350
9351         wdev_lock(dev->ieee80211_ptr);
9352         err = cfg80211_mlme_deauth(rdev, dev, bssid, ie, ie_len, reason_code,
9353                                    local_state_change);
9354         wdev_unlock(dev->ieee80211_ptr);
9355         return err;
9356 }
9357
9358 static int nl80211_disassociate(struct sk_buff *skb, struct genl_info *info)
9359 {
9360         struct cfg80211_registered_device *rdev = info->user_ptr[0];
9361         struct net_device *dev = info->user_ptr[1];
9362         const u8 *ie = NULL, *bssid;
9363         int ie_len = 0, err;
9364         u16 reason_code;
9365         bool local_state_change;
9366
9367         if (dev->ieee80211_ptr->conn_owner_nlportid &&
9368             dev->ieee80211_ptr->conn_owner_nlportid != info->snd_portid)
9369                 return -EPERM;
9370
9371         if (!info->attrs[NL80211_ATTR_MAC])
9372                 return -EINVAL;
9373
9374         if (!info->attrs[NL80211_ATTR_REASON_CODE])
9375                 return -EINVAL;
9376
9377         if (!rdev->ops->disassoc)
9378                 return -EOPNOTSUPP;
9379
9380         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
9381             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
9382                 return -EOPNOTSUPP;
9383
9384         bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
9385
9386         reason_code = nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]);
9387         if (reason_code == 0) {
9388                 /* Reason Code 0 is reserved */
9389                 return -EINVAL;
9390         }
9391
9392         if (info->attrs[NL80211_ATTR_IE]) {
9393                 ie = nla_data(info->attrs[NL80211_ATTR_IE]);
9394                 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
9395         }
9396
9397         local_state_change = !!info->attrs[NL80211_ATTR_LOCAL_STATE_CHANGE];
9398
9399         wdev_lock(dev->ieee80211_ptr);
9400         err = cfg80211_mlme_disassoc(rdev, dev, bssid, ie, ie_len, reason_code,
9401                                      local_state_change);
9402         wdev_unlock(dev->ieee80211_ptr);
9403         return err;
9404 }
9405
9406 static bool
9407 nl80211_parse_mcast_rate(struct cfg80211_registered_device *rdev,
9408                          int mcast_rate[NUM_NL80211_BANDS],
9409                          int rateval)
9410 {
9411         struct wiphy *wiphy = &rdev->wiphy;
9412         bool found = false;
9413         int band, i;
9414
9415         for (band = 0; band < NUM_NL80211_BANDS; band++) {
9416                 struct ieee80211_supported_band *sband;
9417
9418                 sband = wiphy->bands[band];
9419                 if (!sband)
9420                         continue;
9421
9422                 for (i = 0; i < sband->n_bitrates; i++) {
9423                         if (sband->bitrates[i].bitrate == rateval) {
9424                                 mcast_rate[band] = i + 1;
9425                                 found = true;
9426                                 break;
9427                         }
9428                 }
9429         }
9430
9431         return found;
9432 }
9433
9434 static int nl80211_join_ibss(struct sk_buff *skb, struct genl_info *info)
9435 {
9436         struct cfg80211_registered_device *rdev = info->user_ptr[0];
9437         struct net_device *dev = info->user_ptr[1];
9438         struct cfg80211_ibss_params ibss;
9439         struct wiphy *wiphy;
9440         struct cfg80211_cached_keys *connkeys = NULL;
9441         int err;
9442
9443         memset(&ibss, 0, sizeof(ibss));
9444
9445         if (!info->attrs[NL80211_ATTR_SSID] ||
9446             !nla_len(info->attrs[NL80211_ATTR_SSID]))
9447                 return -EINVAL;
9448
9449         ibss.beacon_interval = 100;
9450
9451         if (info->attrs[NL80211_ATTR_BEACON_INTERVAL])
9452                 ibss.beacon_interval =
9453                         nla_get_u32(info->attrs[NL80211_ATTR_BEACON_INTERVAL]);
9454
9455         err = cfg80211_validate_beacon_int(rdev, NL80211_IFTYPE_ADHOC,
9456                                            ibss.beacon_interval);
9457         if (err)
9458                 return err;
9459
9460         if (!rdev->ops->join_ibss)
9461                 return -EOPNOTSUPP;
9462
9463         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_ADHOC)
9464                 return -EOPNOTSUPP;
9465
9466         wiphy = &rdev->wiphy;
9467
9468         if (info->attrs[NL80211_ATTR_MAC]) {
9469                 ibss.bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
9470
9471                 if (!is_valid_ether_addr(ibss.bssid))
9472                         return -EINVAL;
9473         }
9474         ibss.ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
9475         ibss.ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
9476
9477         if (info->attrs[NL80211_ATTR_IE]) {
9478                 ibss.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
9479                 ibss.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
9480         }
9481
9482         err = nl80211_parse_chandef(rdev, info, &ibss.chandef);
9483         if (err)
9484                 return err;
9485
9486         if (!cfg80211_reg_can_beacon(&rdev->wiphy, &ibss.chandef,
9487                                      NL80211_IFTYPE_ADHOC))
9488                 return -EINVAL;
9489
9490         switch (ibss.chandef.width) {
9491         case NL80211_CHAN_WIDTH_5:
9492         case NL80211_CHAN_WIDTH_10:
9493         case NL80211_CHAN_WIDTH_20_NOHT:
9494                 break;
9495         case NL80211_CHAN_WIDTH_20:
9496         case NL80211_CHAN_WIDTH_40:
9497                 if (!(rdev->wiphy.features & NL80211_FEATURE_HT_IBSS))
9498                         return -EINVAL;
9499                 break;
9500         case NL80211_CHAN_WIDTH_80:
9501         case NL80211_CHAN_WIDTH_80P80:
9502         case NL80211_CHAN_WIDTH_160:
9503                 if (!(rdev->wiphy.features & NL80211_FEATURE_HT_IBSS))
9504                         return -EINVAL;
9505                 if (!wiphy_ext_feature_isset(&rdev->wiphy,
9506                                              NL80211_EXT_FEATURE_VHT_IBSS))
9507                         return -EINVAL;
9508                 break;
9509         default:
9510                 return -EINVAL;
9511         }
9512
9513         ibss.channel_fixed = !!info->attrs[NL80211_ATTR_FREQ_FIXED];
9514         ibss.privacy = !!info->attrs[NL80211_ATTR_PRIVACY];
9515
9516         if (info->attrs[NL80211_ATTR_BSS_BASIC_RATES]) {
9517                 u8 *rates =
9518                         nla_data(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
9519                 int n_rates =
9520                         nla_len(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
9521                 struct ieee80211_supported_band *sband =
9522                         wiphy->bands[ibss.chandef.chan->band];
9523
9524                 err = ieee80211_get_ratemask(sband, rates, n_rates,
9525                                              &ibss.basic_rates);
9526                 if (err)
9527                         return err;
9528         }
9529
9530         if (info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK])
9531                 memcpy(&ibss.ht_capa_mask,
9532                        nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]),
9533                        sizeof(ibss.ht_capa_mask));
9534
9535         if (info->attrs[NL80211_ATTR_HT_CAPABILITY]) {
9536                 if (!info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK])
9537                         return -EINVAL;
9538                 memcpy(&ibss.ht_capa,
9539                        nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]),
9540                        sizeof(ibss.ht_capa));
9541         }
9542
9543         if (info->attrs[NL80211_ATTR_MCAST_RATE] &&
9544             !nl80211_parse_mcast_rate(rdev, ibss.mcast_rate,
9545                         nla_get_u32(info->attrs[NL80211_ATTR_MCAST_RATE])))
9546                 return -EINVAL;
9547
9548         if (ibss.privacy && info->attrs[NL80211_ATTR_KEYS]) {
9549                 bool no_ht = false;
9550
9551                 connkeys = nl80211_parse_connkeys(rdev, info, &no_ht);
9552                 if (IS_ERR(connkeys))
9553                         return PTR_ERR(connkeys);
9554
9555                 if ((ibss.chandef.width != NL80211_CHAN_WIDTH_20_NOHT) &&
9556                     no_ht) {
9557                         kzfree(connkeys);
9558                         return -EINVAL;
9559                 }
9560         }
9561
9562         ibss.control_port =
9563                 nla_get_flag(info->attrs[NL80211_ATTR_CONTROL_PORT]);
9564
9565         if (info->attrs[NL80211_ATTR_CONTROL_PORT_OVER_NL80211]) {
9566                 int r = validate_pae_over_nl80211(rdev, info);
9567
9568                 if (r < 0) {
9569                         kzfree(connkeys);
9570                         return r;
9571                 }
9572
9573                 ibss.control_port_over_nl80211 = true;
9574         }
9575
9576         ibss.userspace_handles_dfs =
9577                 nla_get_flag(info->attrs[NL80211_ATTR_HANDLE_DFS]);
9578
9579         wdev_lock(dev->ieee80211_ptr);
9580         err = __cfg80211_join_ibss(rdev, dev, &ibss, connkeys);
9581         if (err)
9582                 kzfree(connkeys);
9583         else if (info->attrs[NL80211_ATTR_SOCKET_OWNER])
9584                 dev->ieee80211_ptr->conn_owner_nlportid = info->snd_portid;
9585         wdev_unlock(dev->ieee80211_ptr);
9586
9587         return err;
9588 }
9589
9590 static int nl80211_leave_ibss(struct sk_buff *skb, struct genl_info *info)
9591 {
9592         struct cfg80211_registered_device *rdev = info->user_ptr[0];
9593         struct net_device *dev = info->user_ptr[1];
9594
9595         if (!rdev->ops->leave_ibss)
9596                 return -EOPNOTSUPP;
9597
9598         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_ADHOC)
9599                 return -EOPNOTSUPP;
9600
9601         return cfg80211_leave_ibss(rdev, dev, false);
9602 }
9603
9604 static int nl80211_set_mcast_rate(struct sk_buff *skb, struct genl_info *info)
9605 {
9606         struct cfg80211_registered_device *rdev = info->user_ptr[0];
9607         struct net_device *dev = info->user_ptr[1];
9608         int mcast_rate[NUM_NL80211_BANDS];
9609         u32 nla_rate;
9610         int err;
9611
9612         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_ADHOC &&
9613             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT &&
9614             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_OCB)
9615                 return -EOPNOTSUPP;
9616
9617         if (!rdev->ops->set_mcast_rate)
9618                 return -EOPNOTSUPP;
9619
9620         memset(mcast_rate, 0, sizeof(mcast_rate));
9621
9622         if (!info->attrs[NL80211_ATTR_MCAST_RATE])
9623                 return -EINVAL;
9624
9625         nla_rate = nla_get_u32(info->attrs[NL80211_ATTR_MCAST_RATE]);
9626         if (!nl80211_parse_mcast_rate(rdev, mcast_rate, nla_rate))
9627                 return -EINVAL;
9628
9629         err = rdev_set_mcast_rate(rdev, dev, mcast_rate);
9630
9631         return err;
9632 }
9633
9634 static struct sk_buff *
9635 __cfg80211_alloc_vendor_skb(struct cfg80211_registered_device *rdev,
9636                             struct wireless_dev *wdev, int approxlen,
9637                             u32 portid, u32 seq, enum nl80211_commands cmd,
9638                             enum nl80211_attrs attr,
9639                             const struct nl80211_vendor_cmd_info *info,
9640                             gfp_t gfp)
9641 {
9642         struct sk_buff *skb;
9643         void *hdr;
9644         struct nlattr *data;
9645
9646         skb = nlmsg_new(approxlen + 100, gfp);
9647         if (!skb)
9648                 return NULL;
9649
9650         hdr = nl80211hdr_put(skb, portid, seq, 0, cmd);
9651         if (!hdr) {
9652                 kfree_skb(skb);
9653                 return NULL;
9654         }
9655
9656         if (nla_put_u32(skb, NL80211_ATTR_WIPHY, rdev->wiphy_idx))
9657                 goto nla_put_failure;
9658
9659         if (info) {
9660                 if (nla_put_u32(skb, NL80211_ATTR_VENDOR_ID,
9661                                 info->vendor_id))
9662                         goto nla_put_failure;
9663                 if (nla_put_u32(skb, NL80211_ATTR_VENDOR_SUBCMD,
9664                                 info->subcmd))
9665                         goto nla_put_failure;
9666         }
9667
9668         if (wdev) {
9669                 if (nla_put_u64_64bit(skb, NL80211_ATTR_WDEV,
9670                                       wdev_id(wdev), NL80211_ATTR_PAD))
9671                         goto nla_put_failure;
9672                 if (wdev->netdev &&
9673                     nla_put_u32(skb, NL80211_ATTR_IFINDEX,
9674                                 wdev->netdev->ifindex))
9675                         goto nla_put_failure;
9676         }
9677
9678         data = nla_nest_start_noflag(skb, attr);
9679         if (!data)
9680                 goto nla_put_failure;
9681
9682         ((void **)skb->cb)[0] = rdev;
9683         ((void **)skb->cb)[1] = hdr;
9684         ((void **)skb->cb)[2] = data;
9685
9686         return skb;
9687
9688  nla_put_failure:
9689         kfree_skb(skb);
9690         return NULL;
9691 }
9692
9693 struct sk_buff *__cfg80211_alloc_event_skb(struct wiphy *wiphy,
9694                                            struct wireless_dev *wdev,
9695                                            enum nl80211_commands cmd,
9696                                            enum nl80211_attrs attr,
9697                                            unsigned int portid,
9698                                            int vendor_event_idx,
9699                                            int approxlen, gfp_t gfp)
9700 {
9701         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
9702         const struct nl80211_vendor_cmd_info *info;
9703
9704         switch (cmd) {
9705         case NL80211_CMD_TESTMODE:
9706                 if (WARN_ON(vendor_event_idx != -1))
9707                         return NULL;
9708                 info = NULL;
9709                 break;
9710         case NL80211_CMD_VENDOR:
9711                 if (WARN_ON(vendor_event_idx < 0 ||
9712                             vendor_event_idx >= wiphy->n_vendor_events))
9713                         return NULL;
9714                 info = &wiphy->vendor_events[vendor_event_idx];
9715                 break;
9716         default:
9717                 WARN_ON(1);
9718                 return NULL;
9719         }
9720
9721         return __cfg80211_alloc_vendor_skb(rdev, wdev, approxlen, portid, 0,
9722                                            cmd, attr, info, gfp);
9723 }
9724 EXPORT_SYMBOL(__cfg80211_alloc_event_skb);
9725
9726 void __cfg80211_send_event_skb(struct sk_buff *skb, gfp_t gfp)
9727 {
9728         struct cfg80211_registered_device *rdev = ((void **)skb->cb)[0];
9729         void *hdr = ((void **)skb->cb)[1];
9730         struct nlmsghdr *nlhdr = nlmsg_hdr(skb);
9731         struct nlattr *data = ((void **)skb->cb)[2];
9732         enum nl80211_multicast_groups mcgrp = NL80211_MCGRP_TESTMODE;
9733
9734         /* clear CB data for netlink core to own from now on */
9735         memset(skb->cb, 0, sizeof(skb->cb));
9736
9737         nla_nest_end(skb, data);
9738         genlmsg_end(skb, hdr);
9739
9740         if (nlhdr->nlmsg_pid) {
9741                 genlmsg_unicast(wiphy_net(&rdev->wiphy), skb,
9742                                 nlhdr->nlmsg_pid);
9743         } else {
9744                 if (data->nla_type == NL80211_ATTR_VENDOR_DATA)
9745                         mcgrp = NL80211_MCGRP_VENDOR;
9746
9747                 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy),
9748                                         skb, 0, mcgrp, gfp);
9749         }
9750 }
9751 EXPORT_SYMBOL(__cfg80211_send_event_skb);
9752
9753 #ifdef CONFIG_NL80211_TESTMODE
9754 static int nl80211_testmode_do(struct sk_buff *skb, struct genl_info *info)
9755 {
9756         struct cfg80211_registered_device *rdev = info->user_ptr[0];
9757         struct wireless_dev *wdev =
9758                 __cfg80211_wdev_from_attrs(genl_info_net(info), info->attrs);
9759         int err;
9760
9761         if (!rdev->ops->testmode_cmd)
9762                 return -EOPNOTSUPP;
9763
9764         if (IS_ERR(wdev)) {
9765                 err = PTR_ERR(wdev);
9766                 if (err != -EINVAL)
9767                         return err;
9768                 wdev = NULL;
9769         } else if (wdev->wiphy != &rdev->wiphy) {
9770                 return -EINVAL;
9771         }
9772
9773         if (!info->attrs[NL80211_ATTR_TESTDATA])
9774                 return -EINVAL;
9775
9776         rdev->cur_cmd_info = info;
9777         err = rdev_testmode_cmd(rdev, wdev,
9778                                 nla_data(info->attrs[NL80211_ATTR_TESTDATA]),
9779                                 nla_len(info->attrs[NL80211_ATTR_TESTDATA]));
9780         rdev->cur_cmd_info = NULL;
9781
9782         return err;
9783 }
9784
9785 static int nl80211_testmode_dump(struct sk_buff *skb,
9786                                  struct netlink_callback *cb)
9787 {
9788         struct cfg80211_registered_device *rdev;
9789         struct nlattr **attrbuf = NULL;
9790         int err;
9791         long phy_idx;
9792         void *data = NULL;
9793         int data_len = 0;
9794
9795         rtnl_lock();
9796
9797         if (cb->args[0]) {
9798                 /*
9799                  * 0 is a valid index, but not valid for args[0],
9800                  * so we need to offset by 1.
9801                  */
9802                 phy_idx = cb->args[0] - 1;
9803
9804                 rdev = cfg80211_rdev_by_wiphy_idx(phy_idx);
9805                 if (!rdev) {
9806                         err = -ENOENT;
9807                         goto out_err;
9808                 }
9809         } else {
9810                 attrbuf = kcalloc(NUM_NL80211_ATTR, sizeof(*attrbuf),
9811                                   GFP_KERNEL);
9812                 if (!attrbuf) {
9813                         err = -ENOMEM;
9814                         goto out_err;
9815                 }
9816
9817                 err = nlmsg_parse_deprecated(cb->nlh,
9818                                              GENL_HDRLEN + nl80211_fam.hdrsize,
9819                                              attrbuf, nl80211_fam.maxattr,
9820                                              nl80211_policy, NULL);
9821                 if (err)
9822                         goto out_err;
9823
9824                 rdev = __cfg80211_rdev_from_attrs(sock_net(skb->sk), attrbuf);
9825                 if (IS_ERR(rdev)) {
9826                         err = PTR_ERR(rdev);
9827                         goto out_err;
9828                 }
9829                 phy_idx = rdev->wiphy_idx;
9830
9831                 if (attrbuf[NL80211_ATTR_TESTDATA])
9832                         cb->args[1] = (long)attrbuf[NL80211_ATTR_TESTDATA];
9833         }
9834
9835         if (cb->args[1]) {
9836                 data = nla_data((void *)cb->args[1]);
9837                 data_len = nla_len((void *)cb->args[1]);
9838         }
9839
9840         if (!rdev->ops->testmode_dump) {
9841                 err = -EOPNOTSUPP;
9842                 goto out_err;
9843         }
9844
9845         while (1) {
9846                 void *hdr = nl80211hdr_put(skb, NETLINK_CB(cb->skb).portid,
9847                                            cb->nlh->nlmsg_seq, NLM_F_MULTI,
9848                                            NL80211_CMD_TESTMODE);
9849                 struct nlattr *tmdata;
9850
9851                 if (!hdr)
9852                         break;
9853
9854                 if (nla_put_u32(skb, NL80211_ATTR_WIPHY, phy_idx)) {
9855                         genlmsg_cancel(skb, hdr);
9856                         break;
9857                 }
9858
9859                 tmdata = nla_nest_start_noflag(skb, NL80211_ATTR_TESTDATA);
9860                 if (!tmdata) {
9861                         genlmsg_cancel(skb, hdr);
9862                         break;
9863                 }
9864                 err = rdev_testmode_dump(rdev, skb, cb, data, data_len);
9865                 nla_nest_end(skb, tmdata);
9866
9867                 if (err == -ENOBUFS || err == -ENOENT) {
9868                         genlmsg_cancel(skb, hdr);
9869                         break;
9870                 } else if (err) {
9871                         genlmsg_cancel(skb, hdr);
9872                         goto out_err;
9873                 }
9874
9875                 genlmsg_end(skb, hdr);
9876         }
9877
9878         err = skb->len;
9879         /* see above */
9880         cb->args[0] = phy_idx + 1;
9881  out_err:
9882         kfree(attrbuf);
9883         rtnl_unlock();
9884         return err;
9885 }
9886 #endif
9887
9888 static int nl80211_connect(struct sk_buff *skb, struct genl_info *info)
9889 {
9890         struct cfg80211_registered_device *rdev = info->user_ptr[0];
9891         struct net_device *dev = info->user_ptr[1];
9892         struct cfg80211_connect_params connect;
9893         struct wiphy *wiphy;
9894         struct cfg80211_cached_keys *connkeys = NULL;
9895         int err;
9896
9897         memset(&connect, 0, sizeof(connect));
9898
9899         if (!info->attrs[NL80211_ATTR_SSID] ||
9900             !nla_len(info->attrs[NL80211_ATTR_SSID]))
9901                 return -EINVAL;
9902
9903         if (info->attrs[NL80211_ATTR_AUTH_TYPE]) {
9904                 connect.auth_type =
9905                         nla_get_u32(info->attrs[NL80211_ATTR_AUTH_TYPE]);
9906                 if (!nl80211_valid_auth_type(rdev, connect.auth_type,
9907                                              NL80211_CMD_CONNECT))
9908                         return -EINVAL;
9909         } else
9910                 connect.auth_type = NL80211_AUTHTYPE_AUTOMATIC;
9911
9912         connect.privacy = info->attrs[NL80211_ATTR_PRIVACY];
9913
9914         if (info->attrs[NL80211_ATTR_WANT_1X_4WAY_HS] &&
9915             !wiphy_ext_feature_isset(&rdev->wiphy,
9916                                      NL80211_EXT_FEATURE_4WAY_HANDSHAKE_STA_1X))
9917                 return -EINVAL;
9918         connect.want_1x = info->attrs[NL80211_ATTR_WANT_1X_4WAY_HS];
9919
9920         err = nl80211_crypto_settings(rdev, info, &connect.crypto,
9921                                       NL80211_MAX_NR_CIPHER_SUITES);
9922         if (err)
9923                 return err;
9924
9925         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
9926             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
9927                 return -EOPNOTSUPP;
9928
9929         wiphy = &rdev->wiphy;
9930
9931         connect.bg_scan_period = -1;
9932         if (info->attrs[NL80211_ATTR_BG_SCAN_PERIOD] &&
9933                 (wiphy->flags & WIPHY_FLAG_SUPPORTS_FW_ROAM)) {
9934                 connect.bg_scan_period =
9935                         nla_get_u16(info->attrs[NL80211_ATTR_BG_SCAN_PERIOD]);
9936         }
9937
9938         if (info->attrs[NL80211_ATTR_MAC])
9939                 connect.bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
9940         else if (info->attrs[NL80211_ATTR_MAC_HINT])
9941                 connect.bssid_hint =
9942                         nla_data(info->attrs[NL80211_ATTR_MAC_HINT]);
9943         connect.ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
9944         connect.ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
9945
9946         if (info->attrs[NL80211_ATTR_IE]) {
9947                 connect.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
9948                 connect.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
9949         }
9950
9951         if (info->attrs[NL80211_ATTR_USE_MFP]) {
9952                 connect.mfp = nla_get_u32(info->attrs[NL80211_ATTR_USE_MFP]);
9953                 if (connect.mfp == NL80211_MFP_OPTIONAL &&
9954                     !wiphy_ext_feature_isset(&rdev->wiphy,
9955                                              NL80211_EXT_FEATURE_MFP_OPTIONAL))
9956                         return -EOPNOTSUPP;
9957         } else {
9958                 connect.mfp = NL80211_MFP_NO;
9959         }
9960
9961         if (info->attrs[NL80211_ATTR_PREV_BSSID])
9962                 connect.prev_bssid =
9963                         nla_data(info->attrs[NL80211_ATTR_PREV_BSSID]);
9964
9965         if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
9966                 connect.channel = nl80211_get_valid_chan(
9967                         wiphy, info->attrs[NL80211_ATTR_WIPHY_FREQ]);
9968                 if (!connect.channel)
9969                         return -EINVAL;
9970         } else if (info->attrs[NL80211_ATTR_WIPHY_FREQ_HINT]) {
9971                 connect.channel_hint = nl80211_get_valid_chan(
9972                         wiphy, info->attrs[NL80211_ATTR_WIPHY_FREQ_HINT]);
9973                 if (!connect.channel_hint)
9974                         return -EINVAL;
9975         }
9976
9977         if (info->attrs[NL80211_ATTR_WIPHY_EDMG_CHANNELS]) {
9978                 connect.edmg.channels =
9979                       nla_get_u8(info->attrs[NL80211_ATTR_WIPHY_EDMG_CHANNELS]);
9980
9981                 if (info->attrs[NL80211_ATTR_WIPHY_EDMG_BW_CONFIG])
9982                         connect.edmg.bw_config =
9983                                 nla_get_u8(info->attrs[NL80211_ATTR_WIPHY_EDMG_BW_CONFIG]);
9984         }
9985
9986         if (connect.privacy && info->attrs[NL80211_ATTR_KEYS]) {
9987                 connkeys = nl80211_parse_connkeys(rdev, info, NULL);
9988                 if (IS_ERR(connkeys))
9989                         return PTR_ERR(connkeys);
9990         }
9991
9992         if (nla_get_flag(info->attrs[NL80211_ATTR_DISABLE_HT]))
9993                 connect.flags |= ASSOC_REQ_DISABLE_HT;
9994
9995         if (info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK])
9996                 memcpy(&connect.ht_capa_mask,
9997                        nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]),
9998                        sizeof(connect.ht_capa_mask));
9999
10000         if (info->attrs[NL80211_ATTR_HT_CAPABILITY]) {
10001                 if (!info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]) {
10002                         kzfree(connkeys);
10003                         return -EINVAL;
10004                 }
10005                 memcpy(&connect.ht_capa,
10006                        nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]),
10007                        sizeof(connect.ht_capa));
10008         }
10009
10010         if (nla_get_flag(info->attrs[NL80211_ATTR_DISABLE_VHT]))
10011                 connect.flags |= ASSOC_REQ_DISABLE_VHT;
10012
10013         if (info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK])
10014                 memcpy(&connect.vht_capa_mask,
10015                        nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK]),
10016                        sizeof(connect.vht_capa_mask));
10017
10018         if (info->attrs[NL80211_ATTR_VHT_CAPABILITY]) {
10019                 if (!info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK]) {
10020                         kzfree(connkeys);
10021                         return -EINVAL;
10022                 }
10023                 memcpy(&connect.vht_capa,
10024                        nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY]),
10025                        sizeof(connect.vht_capa));
10026         }
10027
10028         if (nla_get_flag(info->attrs[NL80211_ATTR_USE_RRM])) {
10029                 if (!((rdev->wiphy.features &
10030                         NL80211_FEATURE_DS_PARAM_SET_IE_IN_PROBES) &&
10031                        (rdev->wiphy.features & NL80211_FEATURE_QUIET)) &&
10032                     !wiphy_ext_feature_isset(&rdev->wiphy,
10033                                              NL80211_EXT_FEATURE_RRM)) {
10034                         kzfree(connkeys);
10035                         return -EINVAL;
10036                 }
10037                 connect.flags |= ASSOC_REQ_USE_RRM;
10038         }
10039
10040         connect.pbss = nla_get_flag(info->attrs[NL80211_ATTR_PBSS]);
10041         if (connect.pbss && !rdev->wiphy.bands[NL80211_BAND_60GHZ]) {
10042                 kzfree(connkeys);
10043                 return -EOPNOTSUPP;
10044         }
10045
10046         if (info->attrs[NL80211_ATTR_BSS_SELECT]) {
10047                 /* bss selection makes no sense if bssid is set */
10048                 if (connect.bssid) {
10049                         kzfree(connkeys);
10050                         return -EINVAL;
10051                 }
10052
10053                 err = parse_bss_select(info->attrs[NL80211_ATTR_BSS_SELECT],
10054                                        wiphy, &connect.bss_select);
10055                 if (err) {
10056                         kzfree(connkeys);
10057                         return err;
10058                 }
10059         }
10060
10061         if (wiphy_ext_feature_isset(&rdev->wiphy,
10062                                     NL80211_EXT_FEATURE_FILS_SK_OFFLOAD) &&
10063             info->attrs[NL80211_ATTR_FILS_ERP_USERNAME] &&
10064             info->attrs[NL80211_ATTR_FILS_ERP_REALM] &&
10065             info->attrs[NL80211_ATTR_FILS_ERP_NEXT_SEQ_NUM] &&
10066             info->attrs[NL80211_ATTR_FILS_ERP_RRK]) {
10067                 connect.fils_erp_username =
10068                         nla_data(info->attrs[NL80211_ATTR_FILS_ERP_USERNAME]);
10069                 connect.fils_erp_username_len =
10070                         nla_len(info->attrs[NL80211_ATTR_FILS_ERP_USERNAME]);
10071                 connect.fils_erp_realm =
10072                         nla_data(info->attrs[NL80211_ATTR_FILS_ERP_REALM]);
10073                 connect.fils_erp_realm_len =
10074                         nla_len(info->attrs[NL80211_ATTR_FILS_ERP_REALM]);
10075                 connect.fils_erp_next_seq_num =
10076                         nla_get_u16(
10077                            info->attrs[NL80211_ATTR_FILS_ERP_NEXT_SEQ_NUM]);
10078                 connect.fils_erp_rrk =
10079                         nla_data(info->attrs[NL80211_ATTR_FILS_ERP_RRK]);
10080                 connect.fils_erp_rrk_len =
10081                         nla_len(info->attrs[NL80211_ATTR_FILS_ERP_RRK]);
10082         } else if (info->attrs[NL80211_ATTR_FILS_ERP_USERNAME] ||
10083                    info->attrs[NL80211_ATTR_FILS_ERP_REALM] ||
10084                    info->attrs[NL80211_ATTR_FILS_ERP_NEXT_SEQ_NUM] ||
10085                    info->attrs[NL80211_ATTR_FILS_ERP_RRK]) {
10086                 kzfree(connkeys);
10087                 return -EINVAL;
10088         }
10089
10090         if (nla_get_flag(info->attrs[NL80211_ATTR_EXTERNAL_AUTH_SUPPORT])) {
10091                 if (!info->attrs[NL80211_ATTR_SOCKET_OWNER]) {
10092                         kzfree(connkeys);
10093                         GENL_SET_ERR_MSG(info,
10094                                          "external auth requires connection ownership");
10095                         return -EINVAL;
10096                 }
10097                 connect.flags |= CONNECT_REQ_EXTERNAL_AUTH_SUPPORT;
10098         }
10099
10100         wdev_lock(dev->ieee80211_ptr);
10101
10102         err = cfg80211_connect(rdev, dev, &connect, connkeys,
10103                                connect.prev_bssid);
10104         if (err)
10105                 kzfree(connkeys);
10106
10107         if (!err && info->attrs[NL80211_ATTR_SOCKET_OWNER]) {
10108                 dev->ieee80211_ptr->conn_owner_nlportid = info->snd_portid;
10109                 if (connect.bssid)
10110                         memcpy(dev->ieee80211_ptr->disconnect_bssid,
10111                                connect.bssid, ETH_ALEN);
10112                 else
10113                         memset(dev->ieee80211_ptr->disconnect_bssid,
10114                                0, ETH_ALEN);
10115         }
10116
10117         wdev_unlock(dev->ieee80211_ptr);
10118
10119         return err;
10120 }
10121
10122 static int nl80211_update_connect_params(struct sk_buff *skb,
10123                                          struct genl_info *info)
10124 {
10125         struct cfg80211_connect_params connect = {};
10126         struct cfg80211_registered_device *rdev = info->user_ptr[0];
10127         struct net_device *dev = info->user_ptr[1];
10128         struct wireless_dev *wdev = dev->ieee80211_ptr;
10129         bool fils_sk_offload;
10130         u32 auth_type;
10131         u32 changed = 0;
10132         int ret;
10133
10134         if (!rdev->ops->update_connect_params)
10135                 return -EOPNOTSUPP;
10136
10137         if (info->attrs[NL80211_ATTR_IE]) {
10138                 connect.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
10139                 connect.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
10140                 changed |= UPDATE_ASSOC_IES;
10141         }
10142
10143         fils_sk_offload = wiphy_ext_feature_isset(&rdev->wiphy,
10144                                                   NL80211_EXT_FEATURE_FILS_SK_OFFLOAD);
10145
10146         /*
10147          * when driver supports fils-sk offload all attributes must be
10148          * provided. So the else covers "fils-sk-not-all" and
10149          * "no-fils-sk-any".
10150          */
10151         if (fils_sk_offload &&
10152             info->attrs[NL80211_ATTR_FILS_ERP_USERNAME] &&
10153             info->attrs[NL80211_ATTR_FILS_ERP_REALM] &&
10154             info->attrs[NL80211_ATTR_FILS_ERP_NEXT_SEQ_NUM] &&
10155             info->attrs[NL80211_ATTR_FILS_ERP_RRK]) {
10156                 connect.fils_erp_username =
10157                         nla_data(info->attrs[NL80211_ATTR_FILS_ERP_USERNAME]);
10158                 connect.fils_erp_username_len =
10159                         nla_len(info->attrs[NL80211_ATTR_FILS_ERP_USERNAME]);
10160                 connect.fils_erp_realm =
10161                         nla_data(info->attrs[NL80211_ATTR_FILS_ERP_REALM]);
10162                 connect.fils_erp_realm_len =
10163                         nla_len(info->attrs[NL80211_ATTR_FILS_ERP_REALM]);
10164                 connect.fils_erp_next_seq_num =
10165                         nla_get_u16(
10166                            info->attrs[NL80211_ATTR_FILS_ERP_NEXT_SEQ_NUM]);
10167                 connect.fils_erp_rrk =
10168                         nla_data(info->attrs[NL80211_ATTR_FILS_ERP_RRK]);
10169                 connect.fils_erp_rrk_len =
10170                         nla_len(info->attrs[NL80211_ATTR_FILS_ERP_RRK]);
10171                 changed |= UPDATE_FILS_ERP_INFO;
10172         } else if (info->attrs[NL80211_ATTR_FILS_ERP_USERNAME] ||
10173                    info->attrs[NL80211_ATTR_FILS_ERP_REALM] ||
10174                    info->attrs[NL80211_ATTR_FILS_ERP_NEXT_SEQ_NUM] ||
10175                    info->attrs[NL80211_ATTR_FILS_ERP_RRK]) {
10176                 return -EINVAL;
10177         }
10178
10179         if (info->attrs[NL80211_ATTR_AUTH_TYPE]) {
10180                 auth_type = nla_get_u32(info->attrs[NL80211_ATTR_AUTH_TYPE]);
10181                 if (!nl80211_valid_auth_type(rdev, auth_type,
10182                                              NL80211_CMD_CONNECT))
10183                         return -EINVAL;
10184
10185                 if (auth_type == NL80211_AUTHTYPE_FILS_SK &&
10186                     fils_sk_offload && !(changed & UPDATE_FILS_ERP_INFO))
10187                         return -EINVAL;
10188
10189                 connect.auth_type = auth_type;
10190                 changed |= UPDATE_AUTH_TYPE;
10191         }
10192
10193         wdev_lock(dev->ieee80211_ptr);
10194         if (!wdev->current_bss)
10195                 ret = -ENOLINK;
10196         else
10197                 ret = rdev_update_connect_params(rdev, dev, &connect, changed);
10198         wdev_unlock(dev->ieee80211_ptr);
10199
10200         return ret;
10201 }
10202
10203 static int nl80211_disconnect(struct sk_buff *skb, struct genl_info *info)
10204 {
10205         struct cfg80211_registered_device *rdev = info->user_ptr[0];
10206         struct net_device *dev = info->user_ptr[1];
10207         u16 reason;
10208         int ret;
10209
10210         if (dev->ieee80211_ptr->conn_owner_nlportid &&
10211             dev->ieee80211_ptr->conn_owner_nlportid != info->snd_portid)
10212                 return -EPERM;
10213
10214         if (!info->attrs[NL80211_ATTR_REASON_CODE])
10215                 reason = WLAN_REASON_DEAUTH_LEAVING;
10216         else
10217                 reason = nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]);
10218
10219         if (reason == 0)
10220                 return -EINVAL;
10221
10222         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
10223             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
10224                 return -EOPNOTSUPP;
10225
10226         wdev_lock(dev->ieee80211_ptr);
10227         ret = cfg80211_disconnect(rdev, dev, reason, true);
10228         wdev_unlock(dev->ieee80211_ptr);
10229         return ret;
10230 }
10231
10232 static int nl80211_wiphy_netns(struct sk_buff *skb, struct genl_info *info)
10233 {
10234         struct cfg80211_registered_device *rdev = info->user_ptr[0];
10235         struct net *net;
10236         int err;
10237
10238         if (info->attrs[NL80211_ATTR_PID]) {
10239                 u32 pid = nla_get_u32(info->attrs[NL80211_ATTR_PID]);
10240
10241                 net = get_net_ns_by_pid(pid);
10242         } else if (info->attrs[NL80211_ATTR_NETNS_FD]) {
10243                 u32 fd = nla_get_u32(info->attrs[NL80211_ATTR_NETNS_FD]);
10244
10245                 net = get_net_ns_by_fd(fd);
10246         } else {
10247                 return -EINVAL;
10248         }
10249
10250         if (IS_ERR(net))
10251                 return PTR_ERR(net);
10252
10253         err = 0;
10254
10255         /* check if anything to do */
10256         if (!net_eq(wiphy_net(&rdev->wiphy), net))
10257                 err = cfg80211_switch_netns(rdev, net);
10258
10259         put_net(net);
10260         return err;
10261 }
10262
10263 static int nl80211_setdel_pmksa(struct sk_buff *skb, struct genl_info *info)
10264 {
10265         struct cfg80211_registered_device *rdev = info->user_ptr[0];
10266         int (*rdev_ops)(struct wiphy *wiphy, struct net_device *dev,
10267                         struct cfg80211_pmksa *pmksa) = NULL;
10268         struct net_device *dev = info->user_ptr[1];
10269         struct cfg80211_pmksa pmksa;
10270
10271         memset(&pmksa, 0, sizeof(struct cfg80211_pmksa));
10272
10273         if (!info->attrs[NL80211_ATTR_PMKID])
10274                 return -EINVAL;
10275
10276         pmksa.pmkid = nla_data(info->attrs[NL80211_ATTR_PMKID]);
10277
10278         if (info->attrs[NL80211_ATTR_MAC]) {
10279                 pmksa.bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
10280         } else if (info->attrs[NL80211_ATTR_SSID] &&
10281                    info->attrs[NL80211_ATTR_FILS_CACHE_ID] &&
10282                    (info->genlhdr->cmd == NL80211_CMD_DEL_PMKSA ||
10283                     info->attrs[NL80211_ATTR_PMK])) {
10284                 pmksa.ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
10285                 pmksa.ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
10286                 pmksa.cache_id =
10287                         nla_data(info->attrs[NL80211_ATTR_FILS_CACHE_ID]);
10288         } else {
10289                 return -EINVAL;
10290         }
10291         if (info->attrs[NL80211_ATTR_PMK]) {
10292                 pmksa.pmk = nla_data(info->attrs[NL80211_ATTR_PMK]);
10293                 pmksa.pmk_len = nla_len(info->attrs[NL80211_ATTR_PMK]);
10294         }
10295
10296         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
10297             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT &&
10298             !(dev->ieee80211_ptr->iftype == NL80211_IFTYPE_AP &&
10299               wiphy_ext_feature_isset(&rdev->wiphy,
10300                                       NL80211_EXT_FEATURE_AP_PMKSA_CACHING)))
10301                 return -EOPNOTSUPP;
10302
10303         switch (info->genlhdr->cmd) {
10304         case NL80211_CMD_SET_PMKSA:
10305                 rdev_ops = rdev->ops->set_pmksa;
10306                 break;
10307         case NL80211_CMD_DEL_PMKSA:
10308                 rdev_ops = rdev->ops->del_pmksa;
10309                 break;
10310         default:
10311                 WARN_ON(1);
10312                 break;
10313         }
10314
10315         if (!rdev_ops)
10316                 return -EOPNOTSUPP;
10317
10318         return rdev_ops(&rdev->wiphy, dev, &pmksa);
10319 }
10320
10321 static int nl80211_flush_pmksa(struct sk_buff *skb, struct genl_info *info)
10322 {
10323         struct cfg80211_registered_device *rdev = info->user_ptr[0];
10324         struct net_device *dev = info->user_ptr[1];
10325
10326         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
10327             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
10328                 return -EOPNOTSUPP;
10329
10330         if (!rdev->ops->flush_pmksa)
10331                 return -EOPNOTSUPP;
10332
10333         return rdev_flush_pmksa(rdev, dev);
10334 }
10335
10336 static int nl80211_tdls_mgmt(struct sk_buff *skb, struct genl_info *info)
10337 {
10338         struct cfg80211_registered_device *rdev = info->user_ptr[0];
10339         struct net_device *dev = info->user_ptr[1];
10340         u8 action_code, dialog_token;
10341         u32 peer_capability = 0;
10342         u16 status_code;
10343         u8 *peer;
10344         bool initiator;
10345
10346         if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS) ||
10347             !rdev->ops->tdls_mgmt)
10348                 return -EOPNOTSUPP;
10349
10350         if (!info->attrs[NL80211_ATTR_TDLS_ACTION] ||
10351             !info->attrs[NL80211_ATTR_STATUS_CODE] ||
10352             !info->attrs[NL80211_ATTR_TDLS_DIALOG_TOKEN] ||
10353             !info->attrs[NL80211_ATTR_IE] ||
10354             !info->attrs[NL80211_ATTR_MAC])
10355                 return -EINVAL;
10356
10357         peer = nla_data(info->attrs[NL80211_ATTR_MAC]);
10358         action_code = nla_get_u8(info->attrs[NL80211_ATTR_TDLS_ACTION]);
10359         status_code = nla_get_u16(info->attrs[NL80211_ATTR_STATUS_CODE]);
10360         dialog_token = nla_get_u8(info->attrs[NL80211_ATTR_TDLS_DIALOG_TOKEN]);
10361         initiator = nla_get_flag(info->attrs[NL80211_ATTR_TDLS_INITIATOR]);
10362         if (info->attrs[NL80211_ATTR_TDLS_PEER_CAPABILITY])
10363                 peer_capability =
10364                         nla_get_u32(info->attrs[NL80211_ATTR_TDLS_PEER_CAPABILITY]);
10365
10366         return rdev_tdls_mgmt(rdev, dev, peer, action_code,
10367                               dialog_token, status_code, peer_capability,
10368                               initiator,
10369                               nla_data(info->attrs[NL80211_ATTR_IE]),
10370                               nla_len(info->attrs[NL80211_ATTR_IE]));
10371 }
10372
10373 static int nl80211_tdls_oper(struct sk_buff *skb, struct genl_info *info)
10374 {
10375         struct cfg80211_registered_device *rdev = info->user_ptr[0];
10376         struct net_device *dev = info->user_ptr[1];
10377         enum nl80211_tdls_operation operation;
10378         u8 *peer;
10379
10380         if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS) ||
10381             !rdev->ops->tdls_oper)
10382                 return -EOPNOTSUPP;
10383
10384         if (!info->attrs[NL80211_ATTR_TDLS_OPERATION] ||
10385             !info->attrs[NL80211_ATTR_MAC])
10386                 return -EINVAL;
10387
10388         operation = nla_get_u8(info->attrs[NL80211_ATTR_TDLS_OPERATION]);
10389         peer = nla_data(info->attrs[NL80211_ATTR_MAC]);
10390
10391         return rdev_tdls_oper(rdev, dev, peer, operation);
10392 }
10393
10394 static int nl80211_remain_on_channel(struct sk_buff *skb,
10395                                      struct genl_info *info)
10396 {
10397         struct cfg80211_registered_device *rdev = info->user_ptr[0];
10398         struct wireless_dev *wdev = info->user_ptr[1];
10399         struct cfg80211_chan_def chandef;
10400         const struct cfg80211_chan_def *compat_chandef;
10401         struct sk_buff *msg;
10402         void *hdr;
10403         u64 cookie;
10404         u32 duration;
10405         int err;
10406
10407         if (!info->attrs[NL80211_ATTR_WIPHY_FREQ] ||
10408             !info->attrs[NL80211_ATTR_DURATION])
10409                 return -EINVAL;
10410
10411         duration = nla_get_u32(info->attrs[NL80211_ATTR_DURATION]);
10412
10413         if (!rdev->ops->remain_on_channel ||
10414             !(rdev->wiphy.flags & WIPHY_FLAG_HAS_REMAIN_ON_CHANNEL))
10415                 return -EOPNOTSUPP;
10416
10417         /*
10418          * We should be on that channel for at least a minimum amount of
10419          * time (10ms) but no longer than the driver supports.
10420          */
10421         if (duration < NL80211_MIN_REMAIN_ON_CHANNEL_TIME ||
10422             duration > rdev->wiphy.max_remain_on_channel_duration)
10423                 return -EINVAL;
10424
10425         err = nl80211_parse_chandef(rdev, info, &chandef);
10426         if (err)
10427                 return err;
10428
10429         wdev_lock(wdev);
10430         if (!cfg80211_off_channel_oper_allowed(wdev) &&
10431             !cfg80211_chandef_identical(&wdev->chandef, &chandef)) {
10432                 compat_chandef = cfg80211_chandef_compatible(&wdev->chandef,
10433                                                              &chandef);
10434                 if (compat_chandef != &chandef) {
10435                         wdev_unlock(wdev);
10436                         return -EBUSY;
10437                 }
10438         }
10439         wdev_unlock(wdev);
10440
10441         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
10442         if (!msg)
10443                 return -ENOMEM;
10444
10445         hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
10446                              NL80211_CMD_REMAIN_ON_CHANNEL);
10447         if (!hdr) {
10448                 err = -ENOBUFS;
10449                 goto free_msg;
10450         }
10451
10452         err = rdev_remain_on_channel(rdev, wdev, chandef.chan,
10453                                      duration, &cookie);
10454
10455         if (err)
10456                 goto free_msg;
10457
10458         if (nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, cookie,
10459                               NL80211_ATTR_PAD))
10460                 goto nla_put_failure;
10461
10462         genlmsg_end(msg, hdr);
10463
10464         return genlmsg_reply(msg, info);
10465
10466  nla_put_failure:
10467         err = -ENOBUFS;
10468  free_msg:
10469         nlmsg_free(msg);
10470         return err;
10471 }
10472
10473 static int nl80211_cancel_remain_on_channel(struct sk_buff *skb,
10474                                             struct genl_info *info)
10475 {
10476         struct cfg80211_registered_device *rdev = info->user_ptr[0];
10477         struct wireless_dev *wdev = info->user_ptr[1];
10478         u64 cookie;
10479
10480         if (!info->attrs[NL80211_ATTR_COOKIE])
10481                 return -EINVAL;
10482
10483         if (!rdev->ops->cancel_remain_on_channel)
10484                 return -EOPNOTSUPP;
10485
10486         cookie = nla_get_u64(info->attrs[NL80211_ATTR_COOKIE]);
10487
10488         return rdev_cancel_remain_on_channel(rdev, wdev, cookie);
10489 }
10490
10491 static int nl80211_set_tx_bitrate_mask(struct sk_buff *skb,
10492                                        struct genl_info *info)
10493 {
10494         struct cfg80211_bitrate_mask mask;
10495         struct cfg80211_registered_device *rdev = info->user_ptr[0];
10496         struct net_device *dev = info->user_ptr[1];
10497         int err;
10498
10499         if (!rdev->ops->set_bitrate_mask)
10500                 return -EOPNOTSUPP;
10501
10502         err = nl80211_parse_tx_bitrate_mask(info, &mask);
10503         if (err)
10504                 return err;
10505
10506         return rdev_set_bitrate_mask(rdev, dev, NULL, &mask);
10507 }
10508
10509 static int nl80211_register_mgmt(struct sk_buff *skb, struct genl_info *info)
10510 {
10511         struct cfg80211_registered_device *rdev = info->user_ptr[0];
10512         struct wireless_dev *wdev = info->user_ptr[1];
10513         u16 frame_type = IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_ACTION;
10514
10515         if (!info->attrs[NL80211_ATTR_FRAME_MATCH])
10516                 return -EINVAL;
10517
10518         if (info->attrs[NL80211_ATTR_FRAME_TYPE])
10519                 frame_type = nla_get_u16(info->attrs[NL80211_ATTR_FRAME_TYPE]);
10520
10521         switch (wdev->iftype) {
10522         case NL80211_IFTYPE_STATION:
10523         case NL80211_IFTYPE_ADHOC:
10524         case NL80211_IFTYPE_P2P_CLIENT:
10525         case NL80211_IFTYPE_AP:
10526         case NL80211_IFTYPE_AP_VLAN:
10527         case NL80211_IFTYPE_MESH_POINT:
10528         case NL80211_IFTYPE_P2P_GO:
10529         case NL80211_IFTYPE_P2P_DEVICE:
10530                 break;
10531         case NL80211_IFTYPE_NAN:
10532         default:
10533                 return -EOPNOTSUPP;
10534         }
10535
10536         /* not much point in registering if we can't reply */
10537         if (!rdev->ops->mgmt_tx)
10538                 return -EOPNOTSUPP;
10539
10540         return cfg80211_mlme_register_mgmt(wdev, info->snd_portid, frame_type,
10541                         nla_data(info->attrs[NL80211_ATTR_FRAME_MATCH]),
10542                         nla_len(info->attrs[NL80211_ATTR_FRAME_MATCH]));
10543 }
10544
10545 static int nl80211_tx_mgmt(struct sk_buff *skb, struct genl_info *info)
10546 {
10547         struct cfg80211_registered_device *rdev = info->user_ptr[0];
10548         struct wireless_dev *wdev = info->user_ptr[1];
10549         struct cfg80211_chan_def chandef;
10550         int err;
10551         void *hdr = NULL;
10552         u64 cookie;
10553         struct sk_buff *msg = NULL;
10554         struct cfg80211_mgmt_tx_params params = {
10555                 .dont_wait_for_ack =
10556                         info->attrs[NL80211_ATTR_DONT_WAIT_FOR_ACK],
10557         };
10558
10559         if (!info->attrs[NL80211_ATTR_FRAME])
10560                 return -EINVAL;
10561
10562         if (!rdev->ops->mgmt_tx)
10563                 return -EOPNOTSUPP;
10564
10565         switch (wdev->iftype) {
10566         case NL80211_IFTYPE_P2P_DEVICE:
10567                 if (!info->attrs[NL80211_ATTR_WIPHY_FREQ])
10568                         return -EINVAL;
10569         case NL80211_IFTYPE_STATION:
10570         case NL80211_IFTYPE_ADHOC:
10571         case NL80211_IFTYPE_P2P_CLIENT:
10572         case NL80211_IFTYPE_AP:
10573         case NL80211_IFTYPE_AP_VLAN:
10574         case NL80211_IFTYPE_MESH_POINT:
10575         case NL80211_IFTYPE_P2P_GO:
10576                 break;
10577         case NL80211_IFTYPE_NAN:
10578         default:
10579                 return -EOPNOTSUPP;
10580         }
10581
10582         if (info->attrs[NL80211_ATTR_DURATION]) {
10583                 if (!(rdev->wiphy.flags & WIPHY_FLAG_OFFCHAN_TX))
10584                         return -EINVAL;
10585                 params.wait = nla_get_u32(info->attrs[NL80211_ATTR_DURATION]);
10586
10587                 /*
10588                  * We should wait on the channel for at least a minimum amount
10589                  * of time (10ms) but no longer than the driver supports.
10590                  */
10591                 if (params.wait < NL80211_MIN_REMAIN_ON_CHANNEL_TIME ||
10592                     params.wait > rdev->wiphy.max_remain_on_channel_duration)
10593                         return -EINVAL;
10594         }
10595
10596         params.offchan = info->attrs[NL80211_ATTR_OFFCHANNEL_TX_OK];
10597
10598         if (params.offchan && !(rdev->wiphy.flags & WIPHY_FLAG_OFFCHAN_TX))
10599                 return -EINVAL;
10600
10601         params.no_cck = nla_get_flag(info->attrs[NL80211_ATTR_TX_NO_CCK_RATE]);
10602
10603         /* get the channel if any has been specified, otherwise pass NULL to
10604          * the driver. The latter will use the current one
10605          */
10606         chandef.chan = NULL;
10607         if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
10608                 err = nl80211_parse_chandef(rdev, info, &chandef);
10609                 if (err)
10610                         return err;
10611         }
10612
10613         if (!chandef.chan && params.offchan)
10614                 return -EINVAL;
10615
10616         wdev_lock(wdev);
10617         if (params.offchan && !cfg80211_off_channel_oper_allowed(wdev)) {
10618                 wdev_unlock(wdev);
10619                 return -EBUSY;
10620         }
10621         wdev_unlock(wdev);
10622
10623         params.buf = nla_data(info->attrs[NL80211_ATTR_FRAME]);
10624         params.len = nla_len(info->attrs[NL80211_ATTR_FRAME]);
10625
10626         if (info->attrs[NL80211_ATTR_CSA_C_OFFSETS_TX]) {
10627                 int len = nla_len(info->attrs[NL80211_ATTR_CSA_C_OFFSETS_TX]);
10628                 int i;
10629
10630                 if (len % sizeof(u16))
10631                         return -EINVAL;
10632
10633                 params.n_csa_offsets = len / sizeof(u16);
10634                 params.csa_offsets =
10635                         nla_data(info->attrs[NL80211_ATTR_CSA_C_OFFSETS_TX]);
10636
10637                 /* check that all the offsets fit the frame */
10638                 for (i = 0; i < params.n_csa_offsets; i++) {
10639                         if (params.csa_offsets[i] >= params.len)
10640                                 return -EINVAL;
10641                 }
10642         }
10643
10644         if (!params.dont_wait_for_ack) {
10645                 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
10646                 if (!msg)
10647                         return -ENOMEM;
10648
10649                 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
10650                                      NL80211_CMD_FRAME);
10651                 if (!hdr) {
10652                         err = -ENOBUFS;
10653                         goto free_msg;
10654                 }
10655         }
10656
10657         params.chan = chandef.chan;
10658         err = cfg80211_mlme_mgmt_tx(rdev, wdev, &params, &cookie);
10659         if (err)
10660                 goto free_msg;
10661
10662         if (msg) {
10663                 if (nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, cookie,
10664                                       NL80211_ATTR_PAD))
10665                         goto nla_put_failure;
10666
10667                 genlmsg_end(msg, hdr);
10668                 return genlmsg_reply(msg, info);
10669         }
10670
10671         return 0;
10672
10673  nla_put_failure:
10674         err = -ENOBUFS;
10675  free_msg:
10676         nlmsg_free(msg);
10677         return err;
10678 }
10679
10680 static int nl80211_tx_mgmt_cancel_wait(struct sk_buff *skb, struct genl_info *info)
10681 {
10682         struct cfg80211_registered_device *rdev = info->user_ptr[0];
10683         struct wireless_dev *wdev = info->user_ptr[1];
10684         u64 cookie;
10685
10686         if (!info->attrs[NL80211_ATTR_COOKIE])
10687                 return -EINVAL;
10688
10689         if (!rdev->ops->mgmt_tx_cancel_wait)
10690                 return -EOPNOTSUPP;
10691
10692         switch (wdev->iftype) {
10693         case NL80211_IFTYPE_STATION:
10694         case NL80211_IFTYPE_ADHOC:
10695         case NL80211_IFTYPE_P2P_CLIENT:
10696         case NL80211_IFTYPE_AP:
10697         case NL80211_IFTYPE_AP_VLAN:
10698         case NL80211_IFTYPE_P2P_GO:
10699         case NL80211_IFTYPE_P2P_DEVICE:
10700                 break;
10701         case NL80211_IFTYPE_NAN:
10702         default:
10703                 return -EOPNOTSUPP;
10704         }
10705
10706         cookie = nla_get_u64(info->attrs[NL80211_ATTR_COOKIE]);
10707
10708         return rdev_mgmt_tx_cancel_wait(rdev, wdev, cookie);
10709 }
10710
10711 static int nl80211_set_power_save(struct sk_buff *skb, struct genl_info *info)
10712 {
10713         struct cfg80211_registered_device *rdev = info->user_ptr[0];
10714         struct wireless_dev *wdev;
10715         struct net_device *dev = info->user_ptr[1];
10716         u8 ps_state;
10717         bool state;
10718         int err;
10719
10720         if (!info->attrs[NL80211_ATTR_PS_STATE])
10721                 return -EINVAL;
10722
10723         ps_state = nla_get_u32(info->attrs[NL80211_ATTR_PS_STATE]);
10724
10725         wdev = dev->ieee80211_ptr;
10726
10727         if (!rdev->ops->set_power_mgmt)
10728                 return -EOPNOTSUPP;
10729
10730         state = (ps_state == NL80211_PS_ENABLED) ? true : false;
10731
10732         if (state == wdev->ps)
10733                 return 0;
10734
10735         err = rdev_set_power_mgmt(rdev, dev, state, wdev->ps_timeout);
10736         if (!err)
10737                 wdev->ps = state;
10738         return err;
10739 }
10740
10741 static int nl80211_get_power_save(struct sk_buff *skb, struct genl_info *info)
10742 {
10743         struct cfg80211_registered_device *rdev = info->user_ptr[0];
10744         enum nl80211_ps_state ps_state;
10745         struct wireless_dev *wdev;
10746         struct net_device *dev = info->user_ptr[1];
10747         struct sk_buff *msg;
10748         void *hdr;
10749         int err;
10750
10751         wdev = dev->ieee80211_ptr;
10752
10753         if (!rdev->ops->set_power_mgmt)
10754                 return -EOPNOTSUPP;
10755
10756         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
10757         if (!msg)
10758                 return -ENOMEM;
10759
10760         hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
10761                              NL80211_CMD_GET_POWER_SAVE);
10762         if (!hdr) {
10763                 err = -ENOBUFS;
10764                 goto free_msg;
10765         }
10766
10767         if (wdev->ps)
10768                 ps_state = NL80211_PS_ENABLED;
10769         else
10770                 ps_state = NL80211_PS_DISABLED;
10771
10772         if (nla_put_u32(msg, NL80211_ATTR_PS_STATE, ps_state))
10773                 goto nla_put_failure;
10774
10775         genlmsg_end(msg, hdr);
10776         return genlmsg_reply(msg, info);
10777
10778  nla_put_failure:
10779         err = -ENOBUFS;
10780  free_msg:
10781         nlmsg_free(msg);
10782         return err;
10783 }
10784
10785 static const struct nla_policy
10786 nl80211_attr_cqm_policy[NL80211_ATTR_CQM_MAX + 1] = {
10787         [NL80211_ATTR_CQM_RSSI_THOLD] = { .type = NLA_BINARY },
10788         [NL80211_ATTR_CQM_RSSI_HYST] = { .type = NLA_U32 },
10789         [NL80211_ATTR_CQM_RSSI_THRESHOLD_EVENT] = { .type = NLA_U32 },
10790         [NL80211_ATTR_CQM_TXE_RATE] = { .type = NLA_U32 },
10791         [NL80211_ATTR_CQM_TXE_PKTS] = { .type = NLA_U32 },
10792         [NL80211_ATTR_CQM_TXE_INTVL] = { .type = NLA_U32 },
10793         [NL80211_ATTR_CQM_RSSI_LEVEL] = { .type = NLA_S32 },
10794 };
10795
10796 static int nl80211_set_cqm_txe(struct genl_info *info,
10797                                u32 rate, u32 pkts, u32 intvl)
10798 {
10799         struct cfg80211_registered_device *rdev = info->user_ptr[0];
10800         struct net_device *dev = info->user_ptr[1];
10801         struct wireless_dev *wdev = dev->ieee80211_ptr;
10802
10803         if (rate > 100 || intvl > NL80211_CQM_TXE_MAX_INTVL)
10804                 return -EINVAL;
10805
10806         if (!rdev->ops->set_cqm_txe_config)
10807                 return -EOPNOTSUPP;
10808
10809         if (wdev->iftype != NL80211_IFTYPE_STATION &&
10810             wdev->iftype != NL80211_IFTYPE_P2P_CLIENT)
10811                 return -EOPNOTSUPP;
10812
10813         return rdev_set_cqm_txe_config(rdev, dev, rate, pkts, intvl);
10814 }
10815
10816 static int cfg80211_cqm_rssi_update(struct cfg80211_registered_device *rdev,
10817                                     struct net_device *dev)
10818 {
10819         struct wireless_dev *wdev = dev->ieee80211_ptr;
10820         s32 last, low, high;
10821         u32 hyst;
10822         int i, n, low_index;
10823         int err;
10824
10825         /* RSSI reporting disabled? */
10826         if (!wdev->cqm_config)
10827                 return rdev_set_cqm_rssi_range_config(rdev, dev, 0, 0);
10828
10829         /*
10830          * Obtain current RSSI value if possible, if not and no RSSI threshold
10831          * event has been received yet, we should receive an event after a
10832          * connection is established and enough beacons received to calculate
10833          * the average.
10834          */
10835         if (!wdev->cqm_config->last_rssi_event_value && wdev->current_bss &&
10836             rdev->ops->get_station) {
10837                 struct station_info sinfo = {};
10838                 u8 *mac_addr;
10839
10840                 mac_addr = wdev->current_bss->pub.bssid;
10841
10842                 err = rdev_get_station(rdev, dev, mac_addr, &sinfo);
10843                 if (err)
10844                         return err;
10845
10846                 if (sinfo.filled & BIT_ULL(NL80211_STA_INFO_BEACON_SIGNAL_AVG))
10847                         wdev->cqm_config->last_rssi_event_value =
10848                                 (s8) sinfo.rx_beacon_signal_avg;
10849         }
10850
10851         last = wdev->cqm_config->last_rssi_event_value;
10852         hyst = wdev->cqm_config->rssi_hyst;
10853         n = wdev->cqm_config->n_rssi_thresholds;
10854
10855         for (i = 0; i < n; i++) {
10856                 i = array_index_nospec(i, n);
10857                 if (last < wdev->cqm_config->rssi_thresholds[i])
10858                         break;
10859         }
10860
10861         low_index = i - 1;
10862         if (low_index >= 0) {
10863                 low_index = array_index_nospec(low_index, n);
10864                 low = wdev->cqm_config->rssi_thresholds[low_index] - hyst;
10865         } else {
10866                 low = S32_MIN;
10867         }
10868         if (i < n) {
10869                 i = array_index_nospec(i, n);
10870                 high = wdev->cqm_config->rssi_thresholds[i] + hyst - 1;
10871         } else {
10872                 high = S32_MAX;
10873         }
10874
10875         return rdev_set_cqm_rssi_range_config(rdev, dev, low, high);
10876 }
10877
10878 static int nl80211_set_cqm_rssi(struct genl_info *info,
10879                                 const s32 *thresholds, int n_thresholds,
10880                                 u32 hysteresis)
10881 {
10882         struct cfg80211_registered_device *rdev = info->user_ptr[0];
10883         struct net_device *dev = info->user_ptr[1];
10884         struct wireless_dev *wdev = dev->ieee80211_ptr;
10885         int i, err;
10886         s32 prev = S32_MIN;
10887
10888         /* Check all values negative and sorted */
10889         for (i = 0; i < n_thresholds; i++) {
10890                 if (thresholds[i] > 0 || thresholds[i] <= prev)
10891                         return -EINVAL;
10892
10893                 prev = thresholds[i];
10894         }
10895
10896         if (wdev->iftype != NL80211_IFTYPE_STATION &&
10897             wdev->iftype != NL80211_IFTYPE_P2P_CLIENT)
10898                 return -EOPNOTSUPP;
10899
10900         wdev_lock(wdev);
10901         cfg80211_cqm_config_free(wdev);
10902         wdev_unlock(wdev);
10903
10904         if (n_thresholds <= 1 && rdev->ops->set_cqm_rssi_config) {
10905                 if (n_thresholds == 0 || thresholds[0] == 0) /* Disabling */
10906                         return rdev_set_cqm_rssi_config(rdev, dev, 0, 0);
10907
10908                 return rdev_set_cqm_rssi_config(rdev, dev,
10909                                                 thresholds[0], hysteresis);
10910         }
10911
10912         if (!wiphy_ext_feature_isset(&rdev->wiphy,
10913                                      NL80211_EXT_FEATURE_CQM_RSSI_LIST))
10914                 return -EOPNOTSUPP;
10915
10916         if (n_thresholds == 1 && thresholds[0] == 0) /* Disabling */
10917                 n_thresholds = 0;
10918
10919         wdev_lock(wdev);
10920         if (n_thresholds) {
10921                 struct cfg80211_cqm_config *cqm_config;
10922
10923                 cqm_config = kzalloc(sizeof(struct cfg80211_cqm_config) +
10924                                      n_thresholds * sizeof(s32), GFP_KERNEL);
10925                 if (!cqm_config) {
10926                         err = -ENOMEM;
10927                         goto unlock;
10928                 }
10929
10930                 cqm_config->rssi_hyst = hysteresis;
10931                 cqm_config->n_rssi_thresholds = n_thresholds;
10932                 memcpy(cqm_config->rssi_thresholds, thresholds,
10933                        n_thresholds * sizeof(s32));
10934
10935                 wdev->cqm_config = cqm_config;
10936         }
10937
10938         err = cfg80211_cqm_rssi_update(rdev, dev);
10939
10940 unlock:
10941         wdev_unlock(wdev);
10942
10943         return err;
10944 }
10945
10946 static int nl80211_set_cqm(struct sk_buff *skb, struct genl_info *info)
10947 {
10948         struct nlattr *attrs[NL80211_ATTR_CQM_MAX + 1];
10949         struct nlattr *cqm;
10950         int err;
10951
10952         cqm = info->attrs[NL80211_ATTR_CQM];
10953         if (!cqm)
10954                 return -EINVAL;
10955
10956         err = nla_parse_nested_deprecated(attrs, NL80211_ATTR_CQM_MAX, cqm,
10957                                           nl80211_attr_cqm_policy,
10958                                           info->extack);
10959         if (err)
10960                 return err;
10961
10962         if (attrs[NL80211_ATTR_CQM_RSSI_THOLD] &&
10963             attrs[NL80211_ATTR_CQM_RSSI_HYST]) {
10964                 const s32 *thresholds =
10965                         nla_data(attrs[NL80211_ATTR_CQM_RSSI_THOLD]);
10966                 int len = nla_len(attrs[NL80211_ATTR_CQM_RSSI_THOLD]);
10967                 u32 hysteresis = nla_get_u32(attrs[NL80211_ATTR_CQM_RSSI_HYST]);
10968
10969                 if (len % 4)
10970                         return -EINVAL;
10971
10972                 return nl80211_set_cqm_rssi(info, thresholds, len / 4,
10973                                             hysteresis);
10974         }
10975
10976         if (attrs[NL80211_ATTR_CQM_TXE_RATE] &&
10977             attrs[NL80211_ATTR_CQM_TXE_PKTS] &&
10978             attrs[NL80211_ATTR_CQM_TXE_INTVL]) {
10979                 u32 rate = nla_get_u32(attrs[NL80211_ATTR_CQM_TXE_RATE]);
10980                 u32 pkts = nla_get_u32(attrs[NL80211_ATTR_CQM_TXE_PKTS]);
10981                 u32 intvl = nla_get_u32(attrs[NL80211_ATTR_CQM_TXE_INTVL]);
10982
10983                 return nl80211_set_cqm_txe(info, rate, pkts, intvl);
10984         }
10985
10986         return -EINVAL;
10987 }
10988
10989 static int nl80211_join_ocb(struct sk_buff *skb, struct genl_info *info)
10990 {
10991         struct cfg80211_registered_device *rdev = info->user_ptr[0];
10992         struct net_device *dev = info->user_ptr[1];
10993         struct ocb_setup setup = {};
10994         int err;
10995
10996         err = nl80211_parse_chandef(rdev, info, &setup.chandef);
10997         if (err)
10998                 return err;
10999
11000         return cfg80211_join_ocb(rdev, dev, &setup);
11001 }
11002
11003 static int nl80211_leave_ocb(struct sk_buff *skb, struct genl_info *info)
11004 {
11005         struct cfg80211_registered_device *rdev = info->user_ptr[0];
11006         struct net_device *dev = info->user_ptr[1];
11007
11008         return cfg80211_leave_ocb(rdev, dev);
11009 }
11010
11011 static int nl80211_join_mesh(struct sk_buff *skb, struct genl_info *info)
11012 {
11013         struct cfg80211_registered_device *rdev = info->user_ptr[0];
11014         struct net_device *dev = info->user_ptr[1];
11015         struct mesh_config cfg;
11016         struct mesh_setup setup;
11017         int err;
11018
11019         /* start with default */
11020         memcpy(&cfg, &default_mesh_config, sizeof(cfg));
11021         memcpy(&setup, &default_mesh_setup, sizeof(setup));
11022
11023         if (info->attrs[NL80211_ATTR_MESH_CONFIG]) {
11024                 /* and parse parameters if given */
11025                 err = nl80211_parse_mesh_config(info, &cfg, NULL);
11026                 if (err)
11027                         return err;
11028         }
11029
11030         if (!info->attrs[NL80211_ATTR_MESH_ID] ||
11031             !nla_len(info->attrs[NL80211_ATTR_MESH_ID]))
11032                 return -EINVAL;
11033
11034         setup.mesh_id = nla_data(info->attrs[NL80211_ATTR_MESH_ID]);
11035         setup.mesh_id_len = nla_len(info->attrs[NL80211_ATTR_MESH_ID]);
11036
11037         if (info->attrs[NL80211_ATTR_MCAST_RATE] &&
11038             !nl80211_parse_mcast_rate(rdev, setup.mcast_rate,
11039                             nla_get_u32(info->attrs[NL80211_ATTR_MCAST_RATE])))
11040                         return -EINVAL;
11041
11042         if (info->attrs[NL80211_ATTR_BEACON_INTERVAL]) {
11043                 setup.beacon_interval =
11044                         nla_get_u32(info->attrs[NL80211_ATTR_BEACON_INTERVAL]);
11045
11046                 err = cfg80211_validate_beacon_int(rdev,
11047                                                    NL80211_IFTYPE_MESH_POINT,
11048                                                    setup.beacon_interval);
11049                 if (err)
11050                         return err;
11051         }
11052
11053         if (info->attrs[NL80211_ATTR_DTIM_PERIOD]) {
11054                 setup.dtim_period =
11055                         nla_get_u32(info->attrs[NL80211_ATTR_DTIM_PERIOD]);
11056                 if (setup.dtim_period < 1 || setup.dtim_period > 100)
11057                         return -EINVAL;
11058         }
11059
11060         if (info->attrs[NL80211_ATTR_MESH_SETUP]) {
11061                 /* parse additional setup parameters if given */
11062                 err = nl80211_parse_mesh_setup(info, &setup);
11063                 if (err)
11064                         return err;
11065         }
11066
11067         if (setup.user_mpm)
11068                 cfg.auto_open_plinks = false;
11069
11070         if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
11071                 err = nl80211_parse_chandef(rdev, info, &setup.chandef);
11072                 if (err)
11073                         return err;
11074         } else {
11075                 /* __cfg80211_join_mesh() will sort it out */
11076                 setup.chandef.chan = NULL;
11077         }
11078
11079         if (info->attrs[NL80211_ATTR_BSS_BASIC_RATES]) {
11080                 u8 *rates = nla_data(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
11081                 int n_rates =
11082                         nla_len(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
11083                 struct ieee80211_supported_band *sband;
11084
11085                 if (!setup.chandef.chan)
11086                         return -EINVAL;
11087
11088                 sband = rdev->wiphy.bands[setup.chandef.chan->band];
11089
11090                 err = ieee80211_get_ratemask(sband, rates, n_rates,
11091                                              &setup.basic_rates);
11092                 if (err)
11093                         return err;
11094         }
11095
11096         if (info->attrs[NL80211_ATTR_TX_RATES]) {
11097                 err = nl80211_parse_tx_bitrate_mask(info, &setup.beacon_rate);
11098                 if (err)
11099                         return err;
11100
11101                 if (!setup.chandef.chan)
11102                         return -EINVAL;
11103
11104                 err = validate_beacon_tx_rate(rdev, setup.chandef.chan->band,
11105                                               &setup.beacon_rate);
11106                 if (err)
11107                         return err;
11108         }
11109
11110         setup.userspace_handles_dfs =
11111                 nla_get_flag(info->attrs[NL80211_ATTR_HANDLE_DFS]);
11112
11113         if (info->attrs[NL80211_ATTR_CONTROL_PORT_OVER_NL80211]) {
11114                 int r = validate_pae_over_nl80211(rdev, info);
11115
11116                 if (r < 0)
11117                         return r;
11118
11119                 setup.control_port_over_nl80211 = true;
11120         }
11121
11122         wdev_lock(dev->ieee80211_ptr);
11123         err = __cfg80211_join_mesh(rdev, dev, &setup, &cfg);
11124         if (!err && info->attrs[NL80211_ATTR_SOCKET_OWNER])
11125                 dev->ieee80211_ptr->conn_owner_nlportid = info->snd_portid;
11126         wdev_unlock(dev->ieee80211_ptr);
11127
11128         return err;
11129 }
11130
11131 static int nl80211_leave_mesh(struct sk_buff *skb, struct genl_info *info)
11132 {
11133         struct cfg80211_registered_device *rdev = info->user_ptr[0];
11134         struct net_device *dev = info->user_ptr[1];
11135
11136         return cfg80211_leave_mesh(rdev, dev);
11137 }
11138
11139 #ifdef CONFIG_PM
11140 static int nl80211_send_wowlan_patterns(struct sk_buff *msg,
11141                                         struct cfg80211_registered_device *rdev)
11142 {
11143         struct cfg80211_wowlan *wowlan = rdev->wiphy.wowlan_config;
11144         struct nlattr *nl_pats, *nl_pat;
11145         int i, pat_len;
11146
11147         if (!wowlan->n_patterns)
11148                 return 0;
11149
11150         nl_pats = nla_nest_start_noflag(msg, NL80211_WOWLAN_TRIG_PKT_PATTERN);
11151         if (!nl_pats)
11152                 return -ENOBUFS;
11153
11154         for (i = 0; i < wowlan->n_patterns; i++) {
11155                 nl_pat = nla_nest_start_noflag(msg, i + 1);
11156                 if (!nl_pat)
11157                         return -ENOBUFS;
11158                 pat_len = wowlan->patterns[i].pattern_len;
11159                 if (nla_put(msg, NL80211_PKTPAT_MASK, DIV_ROUND_UP(pat_len, 8),
11160                             wowlan->patterns[i].mask) ||
11161                     nla_put(msg, NL80211_PKTPAT_PATTERN, pat_len,
11162                             wowlan->patterns[i].pattern) ||
11163                     nla_put_u32(msg, NL80211_PKTPAT_OFFSET,
11164                                 wowlan->patterns[i].pkt_offset))
11165                         return -ENOBUFS;
11166                 nla_nest_end(msg, nl_pat);
11167         }
11168         nla_nest_end(msg, nl_pats);
11169
11170         return 0;
11171 }
11172
11173 static int nl80211_send_wowlan_tcp(struct sk_buff *msg,
11174                                    struct cfg80211_wowlan_tcp *tcp)
11175 {
11176         struct nlattr *nl_tcp;
11177
11178         if (!tcp)
11179                 return 0;
11180
11181         nl_tcp = nla_nest_start_noflag(msg,
11182                                        NL80211_WOWLAN_TRIG_TCP_CONNECTION);
11183         if (!nl_tcp)
11184                 return -ENOBUFS;
11185
11186         if (nla_put_in_addr(msg, NL80211_WOWLAN_TCP_SRC_IPV4, tcp->src) ||
11187             nla_put_in_addr(msg, NL80211_WOWLAN_TCP_DST_IPV4, tcp->dst) ||
11188             nla_put(msg, NL80211_WOWLAN_TCP_DST_MAC, ETH_ALEN, tcp->dst_mac) ||
11189             nla_put_u16(msg, NL80211_WOWLAN_TCP_SRC_PORT, tcp->src_port) ||
11190             nla_put_u16(msg, NL80211_WOWLAN_TCP_DST_PORT, tcp->dst_port) ||
11191             nla_put(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD,
11192                     tcp->payload_len, tcp->payload) ||
11193             nla_put_u32(msg, NL80211_WOWLAN_TCP_DATA_INTERVAL,
11194                         tcp->data_interval) ||
11195             nla_put(msg, NL80211_WOWLAN_TCP_WAKE_PAYLOAD,
11196                     tcp->wake_len, tcp->wake_data) ||
11197             nla_put(msg, NL80211_WOWLAN_TCP_WAKE_MASK,
11198                     DIV_ROUND_UP(tcp->wake_len, 8), tcp->wake_mask))
11199                 return -ENOBUFS;
11200
11201         if (tcp->payload_seq.len &&
11202             nla_put(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ,
11203                     sizeof(tcp->payload_seq), &tcp->payload_seq))
11204                 return -ENOBUFS;
11205
11206         if (tcp->payload_tok.len &&
11207             nla_put(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN,
11208                     sizeof(tcp->payload_tok) + tcp->tokens_size,
11209                     &tcp->payload_tok))
11210                 return -ENOBUFS;
11211
11212         nla_nest_end(msg, nl_tcp);
11213
11214         return 0;
11215 }
11216
11217 static int nl80211_send_wowlan_nd(struct sk_buff *msg,
11218                                   struct cfg80211_sched_scan_request *req)
11219 {
11220         struct nlattr *nd, *freqs, *matches, *match, *scan_plans, *scan_plan;
11221         int i;
11222
11223         if (!req)
11224                 return 0;
11225
11226         nd = nla_nest_start_noflag(msg, NL80211_WOWLAN_TRIG_NET_DETECT);
11227         if (!nd)
11228                 return -ENOBUFS;
11229
11230         if (req->n_scan_plans == 1 &&
11231             nla_put_u32(msg, NL80211_ATTR_SCHED_SCAN_INTERVAL,
11232                         req->scan_plans[0].interval * 1000))
11233                 return -ENOBUFS;
11234
11235         if (nla_put_u32(msg, NL80211_ATTR_SCHED_SCAN_DELAY, req->delay))
11236                 return -ENOBUFS;
11237
11238         if (req->relative_rssi_set) {
11239                 struct nl80211_bss_select_rssi_adjust rssi_adjust;
11240
11241                 if (nla_put_s8(msg, NL80211_ATTR_SCHED_SCAN_RELATIVE_RSSI,
11242                                req->relative_rssi))
11243                         return -ENOBUFS;
11244
11245                 rssi_adjust.band = req->rssi_adjust.band;
11246                 rssi_adjust.delta = req->rssi_adjust.delta;
11247                 if (nla_put(msg, NL80211_ATTR_SCHED_SCAN_RSSI_ADJUST,
11248                             sizeof(rssi_adjust), &rssi_adjust))
11249                         return -ENOBUFS;
11250         }
11251
11252         freqs = nla_nest_start_noflag(msg, NL80211_ATTR_SCAN_FREQUENCIES);
11253         if (!freqs)
11254                 return -ENOBUFS;
11255
11256         for (i = 0; i < req->n_channels; i++) {
11257                 if (nla_put_u32(msg, i, req->channels[i]->center_freq))
11258                         return -ENOBUFS;
11259         }
11260
11261         nla_nest_end(msg, freqs);
11262
11263         if (req->n_match_sets) {
11264                 matches = nla_nest_start_noflag(msg,
11265                                                 NL80211_ATTR_SCHED_SCAN_MATCH);
11266                 if (!matches)
11267                         return -ENOBUFS;
11268
11269                 for (i = 0; i < req->n_match_sets; i++) {
11270                         match = nla_nest_start_noflag(msg, i);
11271                         if (!match)
11272                                 return -ENOBUFS;
11273
11274                         if (nla_put(msg, NL80211_SCHED_SCAN_MATCH_ATTR_SSID,
11275                                     req->match_sets[i].ssid.ssid_len,
11276                                     req->match_sets[i].ssid.ssid))
11277                                 return -ENOBUFS;
11278                         nla_nest_end(msg, match);
11279                 }
11280                 nla_nest_end(msg, matches);
11281         }
11282
11283         scan_plans = nla_nest_start_noflag(msg, NL80211_ATTR_SCHED_SCAN_PLANS);
11284         if (!scan_plans)
11285                 return -ENOBUFS;
11286
11287         for (i = 0; i < req->n_scan_plans; i++) {
11288                 scan_plan = nla_nest_start_noflag(msg, i + 1);
11289                 if (!scan_plan)
11290                         return -ENOBUFS;
11291
11292                 if (nla_put_u32(msg, NL80211_SCHED_SCAN_PLAN_INTERVAL,
11293                                 req->scan_plans[i].interval) ||
11294                     (req->scan_plans[i].iterations &&
11295                      nla_put_u32(msg, NL80211_SCHED_SCAN_PLAN_ITERATIONS,
11296                                  req->scan_plans[i].iterations)))
11297                         return -ENOBUFS;
11298                 nla_nest_end(msg, scan_plan);
11299         }
11300         nla_nest_end(msg, scan_plans);
11301
11302         nla_nest_end(msg, nd);
11303
11304         return 0;
11305 }
11306
11307 static int nl80211_get_wowlan(struct sk_buff *skb, struct genl_info *info)
11308 {
11309         struct cfg80211_registered_device *rdev = info->user_ptr[0];
11310         struct sk_buff *msg;
11311         void *hdr;
11312         u32 size = NLMSG_DEFAULT_SIZE;
11313
11314         if (!rdev->wiphy.wowlan)
11315                 return -EOPNOTSUPP;
11316
11317         if (rdev->wiphy.wowlan_config && rdev->wiphy.wowlan_config->tcp) {
11318                 /* adjust size to have room for all the data */
11319                 size += rdev->wiphy.wowlan_config->tcp->tokens_size +
11320                         rdev->wiphy.wowlan_config->tcp->payload_len +
11321                         rdev->wiphy.wowlan_config->tcp->wake_len +
11322                         rdev->wiphy.wowlan_config->tcp->wake_len / 8;
11323         }
11324
11325         msg = nlmsg_new(size, GFP_KERNEL);
11326         if (!msg)
11327                 return -ENOMEM;
11328
11329         hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
11330                              NL80211_CMD_GET_WOWLAN);
11331         if (!hdr)
11332                 goto nla_put_failure;
11333
11334         if (rdev->wiphy.wowlan_config) {
11335                 struct nlattr *nl_wowlan;
11336
11337                 nl_wowlan = nla_nest_start_noflag(msg,
11338                                                   NL80211_ATTR_WOWLAN_TRIGGERS);
11339                 if (!nl_wowlan)
11340                         goto nla_put_failure;
11341
11342                 if ((rdev->wiphy.wowlan_config->any &&
11343                      nla_put_flag(msg, NL80211_WOWLAN_TRIG_ANY)) ||
11344                     (rdev->wiphy.wowlan_config->disconnect &&
11345                      nla_put_flag(msg, NL80211_WOWLAN_TRIG_DISCONNECT)) ||
11346                     (rdev->wiphy.wowlan_config->magic_pkt &&
11347                      nla_put_flag(msg, NL80211_WOWLAN_TRIG_MAGIC_PKT)) ||
11348                     (rdev->wiphy.wowlan_config->gtk_rekey_failure &&
11349                      nla_put_flag(msg, NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE)) ||
11350                     (rdev->wiphy.wowlan_config->eap_identity_req &&
11351                      nla_put_flag(msg, NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST)) ||
11352                     (rdev->wiphy.wowlan_config->four_way_handshake &&
11353                      nla_put_flag(msg, NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE)) ||
11354                     (rdev->wiphy.wowlan_config->rfkill_release &&
11355                      nla_put_flag(msg, NL80211_WOWLAN_TRIG_RFKILL_RELEASE)))
11356                         goto nla_put_failure;
11357
11358                 if (nl80211_send_wowlan_patterns(msg, rdev))
11359                         goto nla_put_failure;
11360
11361                 if (nl80211_send_wowlan_tcp(msg,
11362                                             rdev->wiphy.wowlan_config->tcp))
11363                         goto nla_put_failure;
11364
11365                 if (nl80211_send_wowlan_nd(
11366                             msg,
11367                             rdev->wiphy.wowlan_config->nd_config))
11368                         goto nla_put_failure;
11369
11370                 nla_nest_end(msg, nl_wowlan);
11371         }
11372
11373         genlmsg_end(msg, hdr);
11374         return genlmsg_reply(msg, info);
11375
11376 nla_put_failure:
11377         nlmsg_free(msg);
11378         return -ENOBUFS;
11379 }
11380
11381 static int nl80211_parse_wowlan_tcp(struct cfg80211_registered_device *rdev,
11382                                     struct nlattr *attr,
11383                                     struct cfg80211_wowlan *trig)
11384 {
11385         struct nlattr *tb[NUM_NL80211_WOWLAN_TCP];
11386         struct cfg80211_wowlan_tcp *cfg;
11387         struct nl80211_wowlan_tcp_data_token *tok = NULL;
11388         struct nl80211_wowlan_tcp_data_seq *seq = NULL;
11389         u32 size;
11390         u32 data_size, wake_size, tokens_size = 0, wake_mask_size;
11391         int err, port;
11392
11393         if (!rdev->wiphy.wowlan->tcp)
11394                 return -EINVAL;
11395
11396         err = nla_parse_nested_deprecated(tb, MAX_NL80211_WOWLAN_TCP, attr,
11397                                           nl80211_wowlan_tcp_policy, NULL);
11398         if (err)
11399                 return err;
11400
11401         if (!tb[NL80211_WOWLAN_TCP_SRC_IPV4] ||
11402             !tb[NL80211_WOWLAN_TCP_DST_IPV4] ||
11403             !tb[NL80211_WOWLAN_TCP_DST_MAC] ||
11404             !tb[NL80211_WOWLAN_TCP_DST_PORT] ||
11405             !tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD] ||
11406             !tb[NL80211_WOWLAN_TCP_DATA_INTERVAL] ||
11407             !tb[NL80211_WOWLAN_TCP_WAKE_PAYLOAD] ||
11408             !tb[NL80211_WOWLAN_TCP_WAKE_MASK])
11409                 return -EINVAL;
11410
11411         data_size = nla_len(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD]);
11412         if (data_size > rdev->wiphy.wowlan->tcp->data_payload_max)
11413                 return -EINVAL;
11414
11415         if (nla_get_u32(tb[NL80211_WOWLAN_TCP_DATA_INTERVAL]) >
11416                         rdev->wiphy.wowlan->tcp->data_interval_max ||
11417             nla_get_u32(tb[NL80211_WOWLAN_TCP_DATA_INTERVAL]) == 0)
11418                 return -EINVAL;
11419
11420         wake_size = nla_len(tb[NL80211_WOWLAN_TCP_WAKE_PAYLOAD]);
11421         if (wake_size > rdev->wiphy.wowlan->tcp->wake_payload_max)
11422                 return -EINVAL;
11423
11424         wake_mask_size = nla_len(tb[NL80211_WOWLAN_TCP_WAKE_MASK]);
11425         if (wake_mask_size != DIV_ROUND_UP(wake_size, 8))
11426                 return -EINVAL;
11427
11428         if (tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN]) {
11429                 u32 tokln = nla_len(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN]);
11430
11431                 tok = nla_data(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN]);
11432                 tokens_size = tokln - sizeof(*tok);
11433
11434                 if (!tok->len || tokens_size % tok->len)
11435                         return -EINVAL;
11436                 if (!rdev->wiphy.wowlan->tcp->tok)
11437                         return -EINVAL;
11438                 if (tok->len > rdev->wiphy.wowlan->tcp->tok->max_len)
11439                         return -EINVAL;
11440                 if (tok->len < rdev->wiphy.wowlan->tcp->tok->min_len)
11441                         return -EINVAL;
11442                 if (tokens_size > rdev->wiphy.wowlan->tcp->tok->bufsize)
11443                         return -EINVAL;
11444                 if (tok->offset + tok->len > data_size)
11445                         return -EINVAL;
11446         }
11447
11448         if (tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ]) {
11449                 seq = nla_data(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ]);
11450                 if (!rdev->wiphy.wowlan->tcp->seq)
11451                         return -EINVAL;
11452                 if (seq->len == 0 || seq->len > 4)
11453                         return -EINVAL;
11454                 if (seq->len + seq->offset > data_size)
11455                         return -EINVAL;
11456         }
11457
11458         size = sizeof(*cfg);
11459         size += data_size;
11460         size += wake_size + wake_mask_size;
11461         size += tokens_size;
11462
11463         cfg = kzalloc(size, GFP_KERNEL);
11464         if (!cfg)
11465                 return -ENOMEM;
11466         cfg->src = nla_get_in_addr(tb[NL80211_WOWLAN_TCP_SRC_IPV4]);
11467         cfg->dst = nla_get_in_addr(tb[NL80211_WOWLAN_TCP_DST_IPV4]);
11468         memcpy(cfg->dst_mac, nla_data(tb[NL80211_WOWLAN_TCP_DST_MAC]),
11469                ETH_ALEN);
11470         if (tb[NL80211_WOWLAN_TCP_SRC_PORT])
11471                 port = nla_get_u16(tb[NL80211_WOWLAN_TCP_SRC_PORT]);
11472         else
11473                 port = 0;
11474 #ifdef CONFIG_INET
11475         /* allocate a socket and port for it and use it */
11476         err = __sock_create(wiphy_net(&rdev->wiphy), PF_INET, SOCK_STREAM,
11477                             IPPROTO_TCP, &cfg->sock, 1);
11478         if (err) {
11479                 kfree(cfg);
11480                 return err;
11481         }
11482         if (inet_csk_get_port(cfg->sock->sk, port)) {
11483                 sock_release(cfg->sock);
11484                 kfree(cfg);
11485                 return -EADDRINUSE;
11486         }
11487         cfg->src_port = inet_sk(cfg->sock->sk)->inet_num;
11488 #else
11489         if (!port) {
11490                 kfree(cfg);
11491                 return -EINVAL;
11492         }
11493         cfg->src_port = port;
11494 #endif
11495
11496         cfg->dst_port = nla_get_u16(tb[NL80211_WOWLAN_TCP_DST_PORT]);
11497         cfg->payload_len = data_size;
11498         cfg->payload = (u8 *)cfg + sizeof(*cfg) + tokens_size;
11499         memcpy((void *)cfg->payload,
11500                nla_data(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD]),
11501                data_size);
11502         if (seq)
11503                 cfg->payload_seq = *seq;
11504         cfg->data_interval = nla_get_u32(tb[NL80211_WOWLAN_TCP_DATA_INTERVAL]);
11505         cfg->wake_len = wake_size;
11506         cfg->wake_data = (u8 *)cfg + sizeof(*cfg) + tokens_size + data_size;
11507         memcpy((void *)cfg->wake_data,
11508                nla_data(tb[NL80211_WOWLAN_TCP_WAKE_PAYLOAD]),
11509                wake_size);
11510         cfg->wake_mask = (u8 *)cfg + sizeof(*cfg) + tokens_size +
11511                          data_size + wake_size;
11512         memcpy((void *)cfg->wake_mask,
11513                nla_data(tb[NL80211_WOWLAN_TCP_WAKE_MASK]),
11514                wake_mask_size);
11515         if (tok) {
11516                 cfg->tokens_size = tokens_size;
11517                 memcpy(&cfg->payload_tok, tok, sizeof(*tok) + tokens_size);
11518         }
11519
11520         trig->tcp = cfg;
11521
11522         return 0;
11523 }
11524
11525 static int nl80211_parse_wowlan_nd(struct cfg80211_registered_device *rdev,
11526                                    const struct wiphy_wowlan_support *wowlan,
11527                                    struct nlattr *attr,
11528                                    struct cfg80211_wowlan *trig)
11529 {
11530         struct nlattr **tb;
11531         int err;
11532
11533         tb = kcalloc(NUM_NL80211_ATTR, sizeof(*tb), GFP_KERNEL);
11534         if (!tb)
11535                 return -ENOMEM;
11536
11537         if (!(wowlan->flags & WIPHY_WOWLAN_NET_DETECT)) {
11538                 err = -EOPNOTSUPP;
11539                 goto out;
11540         }
11541
11542         err = nla_parse_nested_deprecated(tb, NL80211_ATTR_MAX, attr,
11543                                           nl80211_policy, NULL);
11544         if (err)
11545                 goto out;
11546
11547         trig->nd_config = nl80211_parse_sched_scan(&rdev->wiphy, NULL, tb,
11548                                                    wowlan->max_nd_match_sets);
11549         err = PTR_ERR_OR_ZERO(trig->nd_config);
11550         if (err)
11551                 trig->nd_config = NULL;
11552
11553 out:
11554         kfree(tb);
11555         return err;
11556 }
11557
11558 static int nl80211_set_wowlan(struct sk_buff *skb, struct genl_info *info)
11559 {
11560         struct cfg80211_registered_device *rdev = info->user_ptr[0];
11561         struct nlattr *tb[NUM_NL80211_WOWLAN_TRIG];
11562         struct cfg80211_wowlan new_triggers = {};
11563         struct cfg80211_wowlan *ntrig;
11564         const struct wiphy_wowlan_support *wowlan = rdev->wiphy.wowlan;
11565         int err, i;
11566         bool prev_enabled = rdev->wiphy.wowlan_config;
11567         bool regular = false;
11568
11569         if (!wowlan)
11570                 return -EOPNOTSUPP;
11571
11572         if (!info->attrs[NL80211_ATTR_WOWLAN_TRIGGERS]) {
11573                 cfg80211_rdev_free_wowlan(rdev);
11574                 rdev->wiphy.wowlan_config = NULL;
11575                 goto set_wakeup;
11576         }
11577
11578         err = nla_parse_nested_deprecated(tb, MAX_NL80211_WOWLAN_TRIG,
11579                                           info->attrs[NL80211_ATTR_WOWLAN_TRIGGERS],
11580                                           nl80211_wowlan_policy, info->extack);
11581         if (err)
11582                 return err;
11583
11584         if (tb[NL80211_WOWLAN_TRIG_ANY]) {
11585                 if (!(wowlan->flags & WIPHY_WOWLAN_ANY))
11586                         return -EINVAL;
11587                 new_triggers.any = true;
11588         }
11589
11590         if (tb[NL80211_WOWLAN_TRIG_DISCONNECT]) {
11591                 if (!(wowlan->flags & WIPHY_WOWLAN_DISCONNECT))
11592                         return -EINVAL;
11593                 new_triggers.disconnect = true;
11594                 regular = true;
11595         }
11596
11597         if (tb[NL80211_WOWLAN_TRIG_MAGIC_PKT]) {
11598                 if (!(wowlan->flags & WIPHY_WOWLAN_MAGIC_PKT))
11599                         return -EINVAL;
11600                 new_triggers.magic_pkt = true;
11601                 regular = true;
11602         }
11603
11604         if (tb[NL80211_WOWLAN_TRIG_GTK_REKEY_SUPPORTED])
11605                 return -EINVAL;
11606
11607         if (tb[NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE]) {
11608                 if (!(wowlan->flags & WIPHY_WOWLAN_GTK_REKEY_FAILURE))
11609                         return -EINVAL;
11610                 new_triggers.gtk_rekey_failure = true;
11611                 regular = true;
11612         }
11613
11614         if (tb[NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST]) {
11615                 if (!(wowlan->flags & WIPHY_WOWLAN_EAP_IDENTITY_REQ))
11616                         return -EINVAL;
11617                 new_triggers.eap_identity_req = true;
11618                 regular = true;
11619         }
11620
11621         if (tb[NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE]) {
11622                 if (!(wowlan->flags & WIPHY_WOWLAN_4WAY_HANDSHAKE))
11623                         return -EINVAL;
11624                 new_triggers.four_way_handshake = true;
11625                 regular = true;
11626         }
11627
11628         if (tb[NL80211_WOWLAN_TRIG_RFKILL_RELEASE]) {
11629                 if (!(wowlan->flags & WIPHY_WOWLAN_RFKILL_RELEASE))
11630                         return -EINVAL;
11631                 new_triggers.rfkill_release = true;
11632                 regular = true;
11633         }
11634
11635         if (tb[NL80211_WOWLAN_TRIG_PKT_PATTERN]) {
11636                 struct nlattr *pat;
11637                 int n_patterns = 0;
11638                 int rem, pat_len, mask_len, pkt_offset;
11639                 struct nlattr *pat_tb[NUM_NL80211_PKTPAT];
11640
11641                 regular = true;
11642
11643                 nla_for_each_nested(pat, tb[NL80211_WOWLAN_TRIG_PKT_PATTERN],
11644                                     rem)
11645                         n_patterns++;
11646                 if (n_patterns > wowlan->n_patterns)
11647                         return -EINVAL;
11648
11649                 new_triggers.patterns = kcalloc(n_patterns,
11650                                                 sizeof(new_triggers.patterns[0]),
11651                                                 GFP_KERNEL);
11652                 if (!new_triggers.patterns)
11653                         return -ENOMEM;
11654
11655                 new_triggers.n_patterns = n_patterns;
11656                 i = 0;
11657
11658                 nla_for_each_nested(pat, tb[NL80211_WOWLAN_TRIG_PKT_PATTERN],
11659                                     rem) {
11660                         u8 *mask_pat;
11661
11662                         err = nla_parse_nested_deprecated(pat_tb,
11663                                                           MAX_NL80211_PKTPAT,
11664                                                           pat,
11665                                                           nl80211_packet_pattern_policy,
11666                                                           info->extack);
11667                         if (err)
11668                                 goto error;
11669
11670                         err = -EINVAL;
11671                         if (!pat_tb[NL80211_PKTPAT_MASK] ||
11672                             !pat_tb[NL80211_PKTPAT_PATTERN])
11673                                 goto error;
11674                         pat_len = nla_len(pat_tb[NL80211_PKTPAT_PATTERN]);
11675                         mask_len = DIV_ROUND_UP(pat_len, 8);
11676                         if (nla_len(pat_tb[NL80211_PKTPAT_MASK]) != mask_len)
11677                                 goto error;
11678                         if (pat_len > wowlan->pattern_max_len ||
11679                             pat_len < wowlan->pattern_min_len)
11680                                 goto error;
11681
11682                         if (!pat_tb[NL80211_PKTPAT_OFFSET])
11683                                 pkt_offset = 0;
11684                         else
11685                                 pkt_offset = nla_get_u32(
11686                                         pat_tb[NL80211_PKTPAT_OFFSET]);
11687                         if (pkt_offset > wowlan->max_pkt_offset)
11688                                 goto error;
11689                         new_triggers.patterns[i].pkt_offset = pkt_offset;
11690
11691                         mask_pat = kmalloc(mask_len + pat_len, GFP_KERNEL);
11692                         if (!mask_pat) {
11693                                 err = -ENOMEM;
11694                                 goto error;
11695                         }
11696                         new_triggers.patterns[i].mask = mask_pat;
11697                         memcpy(mask_pat, nla_data(pat_tb[NL80211_PKTPAT_MASK]),
11698                                mask_len);
11699                         mask_pat += mask_len;
11700                         new_triggers.patterns[i].pattern = mask_pat;
11701                         new_triggers.patterns[i].pattern_len = pat_len;
11702                         memcpy(mask_pat,
11703                                nla_data(pat_tb[NL80211_PKTPAT_PATTERN]),
11704                                pat_len);
11705                         i++;
11706                 }
11707         }
11708
11709         if (tb[NL80211_WOWLAN_TRIG_TCP_CONNECTION]) {
11710                 regular = true;
11711                 err = nl80211_parse_wowlan_tcp(
11712                         rdev, tb[NL80211_WOWLAN_TRIG_TCP_CONNECTION],
11713                         &new_triggers);
11714                 if (err)
11715                         goto error;
11716         }
11717
11718         if (tb[NL80211_WOWLAN_TRIG_NET_DETECT]) {
11719                 regular = true;
11720                 err = nl80211_parse_wowlan_nd(
11721                         rdev, wowlan, tb[NL80211_WOWLAN_TRIG_NET_DETECT],
11722                         &new_triggers);
11723                 if (err)
11724                         goto error;
11725         }
11726
11727         /* The 'any' trigger means the device continues operating more or less
11728          * as in its normal operation mode and wakes up the host on most of the
11729          * normal interrupts (like packet RX, ...)
11730          * It therefore makes little sense to combine with the more constrained
11731          * wakeup trigger modes.
11732          */
11733         if (new_triggers.any && regular) {
11734                 err = -EINVAL;
11735                 goto error;
11736         }
11737
11738         ntrig = kmemdup(&new_triggers, sizeof(new_triggers), GFP_KERNEL);
11739         if (!ntrig) {
11740                 err = -ENOMEM;
11741                 goto error;
11742         }
11743         cfg80211_rdev_free_wowlan(rdev);
11744         rdev->wiphy.wowlan_config = ntrig;
11745
11746  set_wakeup:
11747         if (rdev->ops->set_wakeup &&
11748             prev_enabled != !!rdev->wiphy.wowlan_config)
11749                 rdev_set_wakeup(rdev, rdev->wiphy.wowlan_config);
11750
11751         return 0;
11752  error:
11753         for (i = 0; i < new_triggers.n_patterns; i++)
11754                 kfree(new_triggers.patterns[i].mask);
11755         kfree(new_triggers.patterns);
11756         if (new_triggers.tcp && new_triggers.tcp->sock)
11757                 sock_release(new_triggers.tcp->sock);
11758         kfree(new_triggers.tcp);
11759         kfree(new_triggers.nd_config);
11760         return err;
11761 }
11762 #endif
11763
11764 static int nl80211_send_coalesce_rules(struct sk_buff *msg,
11765                                        struct cfg80211_registered_device *rdev)
11766 {
11767         struct nlattr *nl_pats, *nl_pat, *nl_rule, *nl_rules;
11768         int i, j, pat_len;
11769         struct cfg80211_coalesce_rules *rule;
11770
11771         if (!rdev->coalesce->n_rules)
11772                 return 0;
11773
11774         nl_rules = nla_nest_start_noflag(msg, NL80211_ATTR_COALESCE_RULE);
11775         if (!nl_rules)
11776                 return -ENOBUFS;
11777
11778         for (i = 0; i < rdev->coalesce->n_rules; i++) {
11779                 nl_rule = nla_nest_start_noflag(msg, i + 1);
11780                 if (!nl_rule)
11781                         return -ENOBUFS;
11782
11783                 rule = &rdev->coalesce->rules[i];
11784                 if (nla_put_u32(msg, NL80211_ATTR_COALESCE_RULE_DELAY,
11785                                 rule->delay))
11786                         return -ENOBUFS;
11787
11788                 if (nla_put_u32(msg, NL80211_ATTR_COALESCE_RULE_CONDITION,
11789                                 rule->condition))
11790                         return -ENOBUFS;
11791
11792                 nl_pats = nla_nest_start_noflag(msg,
11793                                                 NL80211_ATTR_COALESCE_RULE_PKT_PATTERN);
11794                 if (!nl_pats)
11795                         return -ENOBUFS;
11796
11797                 for (j = 0; j < rule->n_patterns; j++) {
11798                         nl_pat = nla_nest_start_noflag(msg, j + 1);
11799                         if (!nl_pat)
11800                                 return -ENOBUFS;
11801                         pat_len = rule->patterns[j].pattern_len;
11802                         if (nla_put(msg, NL80211_PKTPAT_MASK,
11803                                     DIV_ROUND_UP(pat_len, 8),
11804                                     rule->patterns[j].mask) ||
11805                             nla_put(msg, NL80211_PKTPAT_PATTERN, pat_len,
11806                                     rule->patterns[j].pattern) ||
11807                             nla_put_u32(msg, NL80211_PKTPAT_OFFSET,
11808                                         rule->patterns[j].pkt_offset))
11809                                 return -ENOBUFS;
11810                         nla_nest_end(msg, nl_pat);
11811                 }
11812                 nla_nest_end(msg, nl_pats);
11813                 nla_nest_end(msg, nl_rule);
11814         }
11815         nla_nest_end(msg, nl_rules);
11816
11817         return 0;
11818 }
11819
11820 static int nl80211_get_coalesce(struct sk_buff *skb, struct genl_info *info)
11821 {
11822         struct cfg80211_registered_device *rdev = info->user_ptr[0];
11823         struct sk_buff *msg;
11824         void *hdr;
11825
11826         if (!rdev->wiphy.coalesce)
11827                 return -EOPNOTSUPP;
11828
11829         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
11830         if (!msg)
11831                 return -ENOMEM;
11832
11833         hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
11834                              NL80211_CMD_GET_COALESCE);
11835         if (!hdr)
11836                 goto nla_put_failure;
11837
11838         if (rdev->coalesce && nl80211_send_coalesce_rules(msg, rdev))
11839                 goto nla_put_failure;
11840
11841         genlmsg_end(msg, hdr);
11842         return genlmsg_reply(msg, info);
11843
11844 nla_put_failure:
11845         nlmsg_free(msg);
11846         return -ENOBUFS;
11847 }
11848
11849 void cfg80211_rdev_free_coalesce(struct cfg80211_registered_device *rdev)
11850 {
11851         struct cfg80211_coalesce *coalesce = rdev->coalesce;
11852         int i, j;
11853         struct cfg80211_coalesce_rules *rule;
11854
11855         if (!coalesce)
11856                 return;
11857
11858         for (i = 0; i < coalesce->n_rules; i++) {
11859                 rule = &coalesce->rules[i];
11860                 for (j = 0; j < rule->n_patterns; j++)
11861                         kfree(rule->patterns[j].mask);
11862                 kfree(rule->patterns);
11863         }
11864         kfree(coalesce->rules);
11865         kfree(coalesce);
11866         rdev->coalesce = NULL;
11867 }
11868
11869 static int nl80211_parse_coalesce_rule(struct cfg80211_registered_device *rdev,
11870                                        struct nlattr *rule,
11871                                        struct cfg80211_coalesce_rules *new_rule)
11872 {
11873         int err, i;
11874         const struct wiphy_coalesce_support *coalesce = rdev->wiphy.coalesce;
11875         struct nlattr *tb[NUM_NL80211_ATTR_COALESCE_RULE], *pat;
11876         int rem, pat_len, mask_len, pkt_offset, n_patterns = 0;
11877         struct nlattr *pat_tb[NUM_NL80211_PKTPAT];
11878
11879         err = nla_parse_nested_deprecated(tb, NL80211_ATTR_COALESCE_RULE_MAX,
11880                                           rule, nl80211_coalesce_policy, NULL);
11881         if (err)
11882                 return err;
11883
11884         if (tb[NL80211_ATTR_COALESCE_RULE_DELAY])
11885                 new_rule->delay =
11886                         nla_get_u32(tb[NL80211_ATTR_COALESCE_RULE_DELAY]);
11887         if (new_rule->delay > coalesce->max_delay)
11888                 return -EINVAL;
11889
11890         if (tb[NL80211_ATTR_COALESCE_RULE_CONDITION])
11891                 new_rule->condition =
11892                         nla_get_u32(tb[NL80211_ATTR_COALESCE_RULE_CONDITION]);
11893
11894         if (!tb[NL80211_ATTR_COALESCE_RULE_PKT_PATTERN])
11895                 return -EINVAL;
11896
11897         nla_for_each_nested(pat, tb[NL80211_ATTR_COALESCE_RULE_PKT_PATTERN],
11898                             rem)
11899                 n_patterns++;
11900         if (n_patterns > coalesce->n_patterns)
11901                 return -EINVAL;
11902
11903         new_rule->patterns = kcalloc(n_patterns, sizeof(new_rule->patterns[0]),
11904                                      GFP_KERNEL);
11905         if (!new_rule->patterns)
11906                 return -ENOMEM;
11907
11908         new_rule->n_patterns = n_patterns;
11909         i = 0;
11910
11911         nla_for_each_nested(pat, tb[NL80211_ATTR_COALESCE_RULE_PKT_PATTERN],
11912                             rem) {
11913                 u8 *mask_pat;
11914
11915                 err = nla_parse_nested_deprecated(pat_tb, MAX_NL80211_PKTPAT,
11916                                                   pat,
11917                                                   nl80211_packet_pattern_policy,
11918                                                   NULL);
11919                 if (err)
11920                         return err;
11921
11922                 if (!pat_tb[NL80211_PKTPAT_MASK] ||
11923                     !pat_tb[NL80211_PKTPAT_PATTERN])
11924                         return -EINVAL;
11925                 pat_len = nla_len(pat_tb[NL80211_PKTPAT_PATTERN]);
11926                 mask_len = DIV_ROUND_UP(pat_len, 8);
11927                 if (nla_len(pat_tb[NL80211_PKTPAT_MASK]) != mask_len)
11928                         return -EINVAL;
11929                 if (pat_len > coalesce->pattern_max_len ||
11930                     pat_len < coalesce->pattern_min_len)
11931                         return -EINVAL;
11932
11933                 if (!pat_tb[NL80211_PKTPAT_OFFSET])
11934                         pkt_offset = 0;
11935                 else
11936                         pkt_offset = nla_get_u32(pat_tb[NL80211_PKTPAT_OFFSET]);
11937                 if (pkt_offset > coalesce->max_pkt_offset)
11938                         return -EINVAL;
11939                 new_rule->patterns[i].pkt_offset = pkt_offset;
11940
11941                 mask_pat = kmalloc(mask_len + pat_len, GFP_KERNEL);
11942                 if (!mask_pat)
11943                         return -ENOMEM;
11944
11945                 new_rule->patterns[i].mask = mask_pat;
11946                 memcpy(mask_pat, nla_data(pat_tb[NL80211_PKTPAT_MASK]),
11947                        mask_len);
11948
11949                 mask_pat += mask_len;
11950                 new_rule->patterns[i].pattern = mask_pat;
11951                 new_rule->patterns[i].pattern_len = pat_len;
11952                 memcpy(mask_pat, nla_data(pat_tb[NL80211_PKTPAT_PATTERN]),
11953                        pat_len);
11954                 i++;
11955         }
11956
11957         return 0;
11958 }
11959
11960 static int nl80211_set_coalesce(struct sk_buff *skb, struct genl_info *info)
11961 {
11962         struct cfg80211_registered_device *rdev = info->user_ptr[0];
11963         const struct wiphy_coalesce_support *coalesce = rdev->wiphy.coalesce;
11964         struct cfg80211_coalesce new_coalesce = {};
11965         struct cfg80211_coalesce *n_coalesce;
11966         int err, rem_rule, n_rules = 0, i, j;
11967         struct nlattr *rule;
11968         struct cfg80211_coalesce_rules *tmp_rule;
11969
11970         if (!rdev->wiphy.coalesce || !rdev->ops->set_coalesce)
11971                 return -EOPNOTSUPP;
11972
11973         if (!info->attrs[NL80211_ATTR_COALESCE_RULE]) {
11974                 cfg80211_rdev_free_coalesce(rdev);
11975                 rdev_set_coalesce(rdev, NULL);
11976                 return 0;
11977         }
11978
11979         nla_for_each_nested(rule, info->attrs[NL80211_ATTR_COALESCE_RULE],
11980                             rem_rule)
11981                 n_rules++;
11982         if (n_rules > coalesce->n_rules)
11983                 return -EINVAL;
11984
11985         new_coalesce.rules = kcalloc(n_rules, sizeof(new_coalesce.rules[0]),
11986                                      GFP_KERNEL);
11987         if (!new_coalesce.rules)
11988                 return -ENOMEM;
11989
11990         new_coalesce.n_rules = n_rules;
11991         i = 0;
11992
11993         nla_for_each_nested(rule, info->attrs[NL80211_ATTR_COALESCE_RULE],
11994                             rem_rule) {
11995                 err = nl80211_parse_coalesce_rule(rdev, rule,
11996                                                   &new_coalesce.rules[i]);
11997                 if (err)
11998                         goto error;
11999
12000                 i++;
12001         }
12002
12003         err = rdev_set_coalesce(rdev, &new_coalesce);
12004         if (err)
12005                 goto error;
12006
12007         n_coalesce = kmemdup(&new_coalesce, sizeof(new_coalesce), GFP_KERNEL);
12008         if (!n_coalesce) {
12009                 err = -ENOMEM;
12010                 goto error;
12011         }
12012         cfg80211_rdev_free_coalesce(rdev);
12013         rdev->coalesce = n_coalesce;
12014
12015         return 0;
12016 error:
12017         for (i = 0; i < new_coalesce.n_rules; i++) {
12018                 tmp_rule = &new_coalesce.rules[i];
12019                 for (j = 0; j < tmp_rule->n_patterns; j++)
12020                         kfree(tmp_rule->patterns[j].mask);
12021                 kfree(tmp_rule->patterns);
12022         }
12023         kfree(new_coalesce.rules);
12024
12025         return err;
12026 }
12027
12028 static int nl80211_set_rekey_data(struct sk_buff *skb, struct genl_info *info)
12029 {
12030         struct cfg80211_registered_device *rdev = info->user_ptr[0];
12031         struct net_device *dev = info->user_ptr[1];
12032         struct wireless_dev *wdev = dev->ieee80211_ptr;
12033         struct nlattr *tb[NUM_NL80211_REKEY_DATA];
12034         struct cfg80211_gtk_rekey_data rekey_data;
12035         int err;
12036
12037         if (!info->attrs[NL80211_ATTR_REKEY_DATA])
12038                 return -EINVAL;
12039
12040         err = nla_parse_nested_deprecated(tb, MAX_NL80211_REKEY_DATA,
12041                                           info->attrs[NL80211_ATTR_REKEY_DATA],
12042                                           nl80211_rekey_policy, info->extack);
12043         if (err)
12044                 return err;
12045
12046         if (!tb[NL80211_REKEY_DATA_REPLAY_CTR] || !tb[NL80211_REKEY_DATA_KEK] ||
12047             !tb[NL80211_REKEY_DATA_KCK])
12048                 return -EINVAL;
12049         if (nla_len(tb[NL80211_REKEY_DATA_REPLAY_CTR]) != NL80211_REPLAY_CTR_LEN)
12050                 return -ERANGE;
12051         if (nla_len(tb[NL80211_REKEY_DATA_KEK]) != NL80211_KEK_LEN)
12052                 return -ERANGE;
12053         if (nla_len(tb[NL80211_REKEY_DATA_KCK]) != NL80211_KCK_LEN)
12054                 return -ERANGE;
12055
12056         rekey_data.kek = nla_data(tb[NL80211_REKEY_DATA_KEK]);
12057         rekey_data.kck = nla_data(tb[NL80211_REKEY_DATA_KCK]);
12058         rekey_data.replay_ctr = nla_data(tb[NL80211_REKEY_DATA_REPLAY_CTR]);
12059
12060         wdev_lock(wdev);
12061         if (!wdev->current_bss) {
12062                 err = -ENOTCONN;
12063                 goto out;
12064         }
12065
12066         if (!rdev->ops->set_rekey_data) {
12067                 err = -EOPNOTSUPP;
12068                 goto out;
12069         }
12070
12071         err = rdev_set_rekey_data(rdev, dev, &rekey_data);
12072  out:
12073         wdev_unlock(wdev);
12074         return err;
12075 }
12076
12077 static int nl80211_register_unexpected_frame(struct sk_buff *skb,
12078                                              struct genl_info *info)
12079 {
12080         struct net_device *dev = info->user_ptr[1];
12081         struct wireless_dev *wdev = dev->ieee80211_ptr;
12082
12083         if (wdev->iftype != NL80211_IFTYPE_AP &&
12084             wdev->iftype != NL80211_IFTYPE_P2P_GO)
12085                 return -EINVAL;
12086
12087         if (wdev->ap_unexpected_nlportid)
12088                 return -EBUSY;
12089
12090         wdev->ap_unexpected_nlportid = info->snd_portid;
12091         return 0;
12092 }
12093
12094 static int nl80211_probe_client(struct sk_buff *skb,
12095                                 struct genl_info *info)
12096 {
12097         struct cfg80211_registered_device *rdev = info->user_ptr[0];
12098         struct net_device *dev = info->user_ptr[1];
12099         struct wireless_dev *wdev = dev->ieee80211_ptr;
12100         struct sk_buff *msg;
12101         void *hdr;
12102         const u8 *addr;
12103         u64 cookie;
12104         int err;
12105
12106         if (wdev->iftype != NL80211_IFTYPE_AP &&
12107             wdev->iftype != NL80211_IFTYPE_P2P_GO)
12108                 return -EOPNOTSUPP;
12109
12110         if (!info->attrs[NL80211_ATTR_MAC])
12111                 return -EINVAL;
12112
12113         if (!rdev->ops->probe_client)
12114                 return -EOPNOTSUPP;
12115
12116         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
12117         if (!msg)
12118                 return -ENOMEM;
12119
12120         hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
12121                              NL80211_CMD_PROBE_CLIENT);
12122         if (!hdr) {
12123                 err = -ENOBUFS;
12124                 goto free_msg;
12125         }
12126
12127         addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
12128
12129         err = rdev_probe_client(rdev, dev, addr, &cookie);
12130         if (err)
12131                 goto free_msg;
12132
12133         if (nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, cookie,
12134                               NL80211_ATTR_PAD))
12135                 goto nla_put_failure;
12136
12137         genlmsg_end(msg, hdr);
12138
12139         return genlmsg_reply(msg, info);
12140
12141  nla_put_failure:
12142         err = -ENOBUFS;
12143  free_msg:
12144         nlmsg_free(msg);
12145         return err;
12146 }
12147
12148 static int nl80211_register_beacons(struct sk_buff *skb, struct genl_info *info)
12149 {
12150         struct cfg80211_registered_device *rdev = info->user_ptr[0];
12151         struct cfg80211_beacon_registration *reg, *nreg;
12152         int rv;
12153
12154         if (!(rdev->wiphy.flags & WIPHY_FLAG_REPORTS_OBSS))
12155                 return -EOPNOTSUPP;
12156
12157         nreg = kzalloc(sizeof(*nreg), GFP_KERNEL);
12158         if (!nreg)
12159                 return -ENOMEM;
12160
12161         /* First, check if already registered. */
12162         spin_lock_bh(&rdev->beacon_registrations_lock);
12163         list_for_each_entry(reg, &rdev->beacon_registrations, list) {
12164                 if (reg->nlportid == info->snd_portid) {
12165                         rv = -EALREADY;
12166                         goto out_err;
12167                 }
12168         }
12169         /* Add it to the list */
12170         nreg->nlportid = info->snd_portid;
12171         list_add(&nreg->list, &rdev->beacon_registrations);
12172
12173         spin_unlock_bh(&rdev->beacon_registrations_lock);
12174
12175         return 0;
12176 out_err:
12177         spin_unlock_bh(&rdev->beacon_registrations_lock);
12178         kfree(nreg);
12179         return rv;
12180 }
12181
12182 static int nl80211_start_p2p_device(struct sk_buff *skb, struct genl_info *info)
12183 {
12184         struct cfg80211_registered_device *rdev = info->user_ptr[0];
12185         struct wireless_dev *wdev = info->user_ptr[1];
12186         int err;
12187
12188         if (!rdev->ops->start_p2p_device)
12189                 return -EOPNOTSUPP;
12190
12191         if (wdev->iftype != NL80211_IFTYPE_P2P_DEVICE)
12192                 return -EOPNOTSUPP;
12193
12194         if (wdev_running(wdev))
12195                 return 0;
12196
12197         if (rfkill_blocked(rdev->rfkill))
12198                 return -ERFKILL;
12199
12200         err = rdev_start_p2p_device(rdev, wdev);
12201         if (err)
12202                 return err;
12203
12204         wdev->is_running = true;
12205         rdev->opencount++;
12206
12207         return 0;
12208 }
12209
12210 static int nl80211_stop_p2p_device(struct sk_buff *skb, struct genl_info *info)
12211 {
12212         struct cfg80211_registered_device *rdev = info->user_ptr[0];
12213         struct wireless_dev *wdev = info->user_ptr[1];
12214
12215         if (wdev->iftype != NL80211_IFTYPE_P2P_DEVICE)
12216                 return -EOPNOTSUPP;
12217
12218         if (!rdev->ops->stop_p2p_device)
12219                 return -EOPNOTSUPP;
12220
12221         cfg80211_stop_p2p_device(rdev, wdev);
12222
12223         return 0;
12224 }
12225
12226 static int nl80211_start_nan(struct sk_buff *skb, struct genl_info *info)
12227 {
12228         struct cfg80211_registered_device *rdev = info->user_ptr[0];
12229         struct wireless_dev *wdev = info->user_ptr[1];
12230         struct cfg80211_nan_conf conf = {};
12231         int err;
12232
12233         if (wdev->iftype != NL80211_IFTYPE_NAN)
12234                 return -EOPNOTSUPP;
12235
12236         if (wdev_running(wdev))
12237                 return -EEXIST;
12238
12239         if (rfkill_blocked(rdev->rfkill))
12240                 return -ERFKILL;
12241
12242         if (!info->attrs[NL80211_ATTR_NAN_MASTER_PREF])
12243                 return -EINVAL;
12244
12245         conf.master_pref =
12246                 nla_get_u8(info->attrs[NL80211_ATTR_NAN_MASTER_PREF]);
12247
12248         if (info->attrs[NL80211_ATTR_BANDS]) {
12249                 u32 bands = nla_get_u32(info->attrs[NL80211_ATTR_BANDS]);
12250
12251                 if (bands & ~(u32)wdev->wiphy->nan_supported_bands)
12252                         return -EOPNOTSUPP;
12253
12254                 if (bands && !(bands & BIT(NL80211_BAND_2GHZ)))
12255                         return -EINVAL;
12256
12257                 conf.bands = bands;
12258         }
12259
12260         err = rdev_start_nan(rdev, wdev, &conf);
12261         if (err)
12262                 return err;
12263
12264         wdev->is_running = true;
12265         rdev->opencount++;
12266
12267         return 0;
12268 }
12269
12270 static int nl80211_stop_nan(struct sk_buff *skb, struct genl_info *info)
12271 {
12272         struct cfg80211_registered_device *rdev = info->user_ptr[0];
12273         struct wireless_dev *wdev = info->user_ptr[1];
12274
12275         if (wdev->iftype != NL80211_IFTYPE_NAN)
12276                 return -EOPNOTSUPP;
12277
12278         cfg80211_stop_nan(rdev, wdev);
12279
12280         return 0;
12281 }
12282
12283 static int validate_nan_filter(struct nlattr *filter_attr)
12284 {
12285         struct nlattr *attr;
12286         int len = 0, n_entries = 0, rem;
12287
12288         nla_for_each_nested(attr, filter_attr, rem) {
12289                 len += nla_len(attr);
12290                 n_entries++;
12291         }
12292
12293         if (len >= U8_MAX)
12294                 return -EINVAL;
12295
12296         return n_entries;
12297 }
12298
12299 static int handle_nan_filter(struct nlattr *attr_filter,
12300                              struct cfg80211_nan_func *func,
12301                              bool tx)
12302 {
12303         struct nlattr *attr;
12304         int n_entries, rem, i;
12305         struct cfg80211_nan_func_filter *filter;
12306
12307         n_entries = validate_nan_filter(attr_filter);
12308         if (n_entries < 0)
12309                 return n_entries;
12310
12311         BUILD_BUG_ON(sizeof(*func->rx_filters) != sizeof(*func->tx_filters));
12312
12313         filter = kcalloc(n_entries, sizeof(*func->rx_filters), GFP_KERNEL);
12314         if (!filter)
12315                 return -ENOMEM;
12316
12317         i = 0;
12318         nla_for_each_nested(attr, attr_filter, rem) {
12319                 filter[i].filter = nla_memdup(attr, GFP_KERNEL);
12320                 filter[i].len = nla_len(attr);
12321                 i++;
12322         }
12323         if (tx) {
12324                 func->num_tx_filters = n_entries;
12325                 func->tx_filters = filter;
12326         } else {
12327                 func->num_rx_filters = n_entries;
12328                 func->rx_filters = filter;
12329         }
12330
12331         return 0;
12332 }
12333
12334 static int nl80211_nan_add_func(struct sk_buff *skb,
12335                                 struct genl_info *info)
12336 {
12337         struct cfg80211_registered_device *rdev = info->user_ptr[0];
12338         struct wireless_dev *wdev = info->user_ptr[1];
12339         struct nlattr *tb[NUM_NL80211_NAN_FUNC_ATTR], *func_attr;
12340         struct cfg80211_nan_func *func;
12341         struct sk_buff *msg = NULL;
12342         void *hdr = NULL;
12343         int err = 0;
12344
12345         if (wdev->iftype != NL80211_IFTYPE_NAN)
12346                 return -EOPNOTSUPP;
12347
12348         if (!wdev_running(wdev))
12349                 return -ENOTCONN;
12350
12351         if (!info->attrs[NL80211_ATTR_NAN_FUNC])
12352                 return -EINVAL;
12353
12354         err = nla_parse_nested_deprecated(tb, NL80211_NAN_FUNC_ATTR_MAX,
12355                                           info->attrs[NL80211_ATTR_NAN_FUNC],
12356                                           nl80211_nan_func_policy,
12357                                           info->extack);
12358         if (err)
12359                 return err;
12360
12361         func = kzalloc(sizeof(*func), GFP_KERNEL);
12362         if (!func)
12363                 return -ENOMEM;
12364
12365         func->cookie = cfg80211_assign_cookie(rdev);
12366
12367         if (!tb[NL80211_NAN_FUNC_TYPE] ||
12368             nla_get_u8(tb[NL80211_NAN_FUNC_TYPE]) > NL80211_NAN_FUNC_MAX_TYPE) {
12369                 err = -EINVAL;
12370                 goto out;
12371         }
12372
12373
12374         func->type = nla_get_u8(tb[NL80211_NAN_FUNC_TYPE]);
12375
12376         if (!tb[NL80211_NAN_FUNC_SERVICE_ID]) {
12377                 err = -EINVAL;
12378                 goto out;
12379         }
12380
12381         memcpy(func->service_id, nla_data(tb[NL80211_NAN_FUNC_SERVICE_ID]),
12382                sizeof(func->service_id));
12383
12384         func->close_range =
12385                 nla_get_flag(tb[NL80211_NAN_FUNC_CLOSE_RANGE]);
12386
12387         if (tb[NL80211_NAN_FUNC_SERVICE_INFO]) {
12388                 func->serv_spec_info_len =
12389                         nla_len(tb[NL80211_NAN_FUNC_SERVICE_INFO]);
12390                 func->serv_spec_info =
12391                         kmemdup(nla_data(tb[NL80211_NAN_FUNC_SERVICE_INFO]),
12392                                 func->serv_spec_info_len,
12393                                 GFP_KERNEL);
12394                 if (!func->serv_spec_info) {
12395                         err = -ENOMEM;
12396                         goto out;
12397                 }
12398         }
12399
12400         if (tb[NL80211_NAN_FUNC_TTL])
12401                 func->ttl = nla_get_u32(tb[NL80211_NAN_FUNC_TTL]);
12402
12403         switch (func->type) {
12404         case NL80211_NAN_FUNC_PUBLISH:
12405                 if (!tb[NL80211_NAN_FUNC_PUBLISH_TYPE]) {
12406                         err = -EINVAL;
12407                         goto out;
12408                 }
12409
12410                 func->publish_type =
12411                         nla_get_u8(tb[NL80211_NAN_FUNC_PUBLISH_TYPE]);
12412                 func->publish_bcast =
12413                         nla_get_flag(tb[NL80211_NAN_FUNC_PUBLISH_BCAST]);
12414
12415                 if ((!(func->publish_type & NL80211_NAN_SOLICITED_PUBLISH)) &&
12416                         func->publish_bcast) {
12417                         err = -EINVAL;
12418                         goto out;
12419                 }
12420                 break;
12421         case NL80211_NAN_FUNC_SUBSCRIBE:
12422                 func->subscribe_active =
12423                         nla_get_flag(tb[NL80211_NAN_FUNC_SUBSCRIBE_ACTIVE]);
12424                 break;
12425         case NL80211_NAN_FUNC_FOLLOW_UP:
12426                 if (!tb[NL80211_NAN_FUNC_FOLLOW_UP_ID] ||
12427                     !tb[NL80211_NAN_FUNC_FOLLOW_UP_REQ_ID] ||
12428                     !tb[NL80211_NAN_FUNC_FOLLOW_UP_DEST]) {
12429                         err = -EINVAL;
12430                         goto out;
12431                 }
12432
12433                 func->followup_id =
12434                         nla_get_u8(tb[NL80211_NAN_FUNC_FOLLOW_UP_ID]);
12435                 func->followup_reqid =
12436                         nla_get_u8(tb[NL80211_NAN_FUNC_FOLLOW_UP_REQ_ID]);
12437                 memcpy(func->followup_dest.addr,
12438                        nla_data(tb[NL80211_NAN_FUNC_FOLLOW_UP_DEST]),
12439                        sizeof(func->followup_dest.addr));
12440                 if (func->ttl) {
12441                         err = -EINVAL;
12442                         goto out;
12443                 }
12444                 break;
12445         default:
12446                 err = -EINVAL;
12447                 goto out;
12448         }
12449
12450         if (tb[NL80211_NAN_FUNC_SRF]) {
12451                 struct nlattr *srf_tb[NUM_NL80211_NAN_SRF_ATTR];
12452
12453                 err = nla_parse_nested_deprecated(srf_tb,
12454                                                   NL80211_NAN_SRF_ATTR_MAX,
12455                                                   tb[NL80211_NAN_FUNC_SRF],
12456                                                   nl80211_nan_srf_policy,
12457                                                   info->extack);
12458                 if (err)
12459                         goto out;
12460
12461                 func->srf_include =
12462                         nla_get_flag(srf_tb[NL80211_NAN_SRF_INCLUDE]);
12463
12464                 if (srf_tb[NL80211_NAN_SRF_BF]) {
12465                         if (srf_tb[NL80211_NAN_SRF_MAC_ADDRS] ||
12466                             !srf_tb[NL80211_NAN_SRF_BF_IDX]) {
12467                                 err = -EINVAL;
12468                                 goto out;
12469                         }
12470
12471                         func->srf_bf_len =
12472                                 nla_len(srf_tb[NL80211_NAN_SRF_BF]);
12473                         func->srf_bf =
12474                                 kmemdup(nla_data(srf_tb[NL80211_NAN_SRF_BF]),
12475                                         func->srf_bf_len, GFP_KERNEL);
12476                         if (!func->srf_bf) {
12477                                 err = -ENOMEM;
12478                                 goto out;
12479                         }
12480
12481                         func->srf_bf_idx =
12482                                 nla_get_u8(srf_tb[NL80211_NAN_SRF_BF_IDX]);
12483                 } else {
12484                         struct nlattr *attr, *mac_attr =
12485                                 srf_tb[NL80211_NAN_SRF_MAC_ADDRS];
12486                         int n_entries, rem, i = 0;
12487
12488                         if (!mac_attr) {
12489                                 err = -EINVAL;
12490                                 goto out;
12491                         }
12492
12493                         n_entries = validate_acl_mac_addrs(mac_attr);
12494                         if (n_entries <= 0) {
12495                                 err = -EINVAL;
12496                                 goto out;
12497                         }
12498
12499                         func->srf_num_macs = n_entries;
12500                         func->srf_macs =
12501                                 kcalloc(n_entries, sizeof(*func->srf_macs),
12502                                         GFP_KERNEL);
12503                         if (!func->srf_macs) {
12504                                 err = -ENOMEM;
12505                                 goto out;
12506                         }
12507
12508                         nla_for_each_nested(attr, mac_attr, rem)
12509                                 memcpy(func->srf_macs[i++].addr, nla_data(attr),
12510                                        sizeof(*func->srf_macs));
12511                 }
12512         }
12513
12514         if (tb[NL80211_NAN_FUNC_TX_MATCH_FILTER]) {
12515                 err = handle_nan_filter(tb[NL80211_NAN_FUNC_TX_MATCH_FILTER],
12516                                         func, true);
12517                 if (err)
12518                         goto out;
12519         }
12520
12521         if (tb[NL80211_NAN_FUNC_RX_MATCH_FILTER]) {
12522                 err = handle_nan_filter(tb[NL80211_NAN_FUNC_RX_MATCH_FILTER],
12523                                         func, false);
12524                 if (err)
12525                         goto out;
12526         }
12527
12528         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
12529         if (!msg) {
12530                 err = -ENOMEM;
12531                 goto out;
12532         }
12533
12534         hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
12535                              NL80211_CMD_ADD_NAN_FUNCTION);
12536         /* This can't really happen - we just allocated 4KB */
12537         if (WARN_ON(!hdr)) {
12538                 err = -ENOMEM;
12539                 goto out;
12540         }
12541
12542         err = rdev_add_nan_func(rdev, wdev, func);
12543 out:
12544         if (err < 0) {
12545                 cfg80211_free_nan_func(func);
12546                 nlmsg_free(msg);
12547                 return err;
12548         }
12549
12550         /* propagate the instance id and cookie to userspace  */
12551         if (nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, func->cookie,
12552                               NL80211_ATTR_PAD))
12553                 goto nla_put_failure;
12554
12555         func_attr = nla_nest_start_noflag(msg, NL80211_ATTR_NAN_FUNC);
12556         if (!func_attr)
12557                 goto nla_put_failure;
12558
12559         if (nla_put_u8(msg, NL80211_NAN_FUNC_INSTANCE_ID,
12560                        func->instance_id))
12561                 goto nla_put_failure;
12562
12563         nla_nest_end(msg, func_attr);
12564
12565         genlmsg_end(msg, hdr);
12566         return genlmsg_reply(msg, info);
12567
12568 nla_put_failure:
12569         nlmsg_free(msg);
12570         return -ENOBUFS;
12571 }
12572
12573 static int nl80211_nan_del_func(struct sk_buff *skb,
12574                                struct genl_info *info)
12575 {
12576         struct cfg80211_registered_device *rdev = info->user_ptr[0];
12577         struct wireless_dev *wdev = info->user_ptr[1];
12578         u64 cookie;
12579
12580         if (wdev->iftype != NL80211_IFTYPE_NAN)
12581                 return -EOPNOTSUPP;
12582
12583         if (!wdev_running(wdev))
12584                 return -ENOTCONN;
12585
12586         if (!info->attrs[NL80211_ATTR_COOKIE])
12587                 return -EINVAL;
12588
12589         cookie = nla_get_u64(info->attrs[NL80211_ATTR_COOKIE]);
12590
12591         rdev_del_nan_func(rdev, wdev, cookie);
12592
12593         return 0;
12594 }
12595
12596 static int nl80211_nan_change_config(struct sk_buff *skb,
12597                                      struct genl_info *info)
12598 {
12599         struct cfg80211_registered_device *rdev = info->user_ptr[0];
12600         struct wireless_dev *wdev = info->user_ptr[1];
12601         struct cfg80211_nan_conf conf = {};
12602         u32 changed = 0;
12603
12604         if (wdev->iftype != NL80211_IFTYPE_NAN)
12605                 return -EOPNOTSUPP;
12606
12607         if (!wdev_running(wdev))
12608                 return -ENOTCONN;
12609
12610         if (info->attrs[NL80211_ATTR_NAN_MASTER_PREF]) {
12611                 conf.master_pref =
12612                         nla_get_u8(info->attrs[NL80211_ATTR_NAN_MASTER_PREF]);
12613                 if (conf.master_pref <= 1 || conf.master_pref == 255)
12614                         return -EINVAL;
12615
12616                 changed |= CFG80211_NAN_CONF_CHANGED_PREF;
12617         }
12618
12619         if (info->attrs[NL80211_ATTR_BANDS]) {
12620                 u32 bands = nla_get_u32(info->attrs[NL80211_ATTR_BANDS]);
12621
12622                 if (bands & ~(u32)wdev->wiphy->nan_supported_bands)
12623                         return -EOPNOTSUPP;
12624
12625                 if (bands && !(bands & BIT(NL80211_BAND_2GHZ)))
12626                         return -EINVAL;
12627
12628                 conf.bands = bands;
12629                 changed |= CFG80211_NAN_CONF_CHANGED_BANDS;
12630         }
12631
12632         if (!changed)
12633                 return -EINVAL;
12634
12635         return rdev_nan_change_conf(rdev, wdev, &conf, changed);
12636 }
12637
12638 void cfg80211_nan_match(struct wireless_dev *wdev,
12639                         struct cfg80211_nan_match_params *match, gfp_t gfp)
12640 {
12641         struct wiphy *wiphy = wdev->wiphy;
12642         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
12643         struct nlattr *match_attr, *local_func_attr, *peer_func_attr;
12644         struct sk_buff *msg;
12645         void *hdr;
12646
12647         if (WARN_ON(!match->inst_id || !match->peer_inst_id || !match->addr))
12648                 return;
12649
12650         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
12651         if (!msg)
12652                 return;
12653
12654         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_NAN_MATCH);
12655         if (!hdr) {
12656                 nlmsg_free(msg);
12657                 return;
12658         }
12659
12660         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
12661             (wdev->netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
12662                                          wdev->netdev->ifindex)) ||
12663             nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
12664                               NL80211_ATTR_PAD))
12665                 goto nla_put_failure;
12666
12667         if (nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, match->cookie,
12668                               NL80211_ATTR_PAD) ||
12669             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, match->addr))
12670                 goto nla_put_failure;
12671
12672         match_attr = nla_nest_start_noflag(msg, NL80211_ATTR_NAN_MATCH);
12673         if (!match_attr)
12674                 goto nla_put_failure;
12675
12676         local_func_attr = nla_nest_start_noflag(msg,
12677                                                 NL80211_NAN_MATCH_FUNC_LOCAL);
12678         if (!local_func_attr)
12679                 goto nla_put_failure;
12680
12681         if (nla_put_u8(msg, NL80211_NAN_FUNC_INSTANCE_ID, match->inst_id))
12682                 goto nla_put_failure;
12683
12684         nla_nest_end(msg, local_func_attr);
12685
12686         peer_func_attr = nla_nest_start_noflag(msg,
12687                                                NL80211_NAN_MATCH_FUNC_PEER);
12688         if (!peer_func_attr)
12689                 goto nla_put_failure;
12690
12691         if (nla_put_u8(msg, NL80211_NAN_FUNC_TYPE, match->type) ||
12692             nla_put_u8(msg, NL80211_NAN_FUNC_INSTANCE_ID, match->peer_inst_id))
12693                 goto nla_put_failure;
12694
12695         if (match->info && match->info_len &&
12696             nla_put(msg, NL80211_NAN_FUNC_SERVICE_INFO, match->info_len,
12697                     match->info))
12698                 goto nla_put_failure;
12699
12700         nla_nest_end(msg, peer_func_attr);
12701         nla_nest_end(msg, match_attr);
12702         genlmsg_end(msg, hdr);
12703
12704         if (!wdev->owner_nlportid)
12705                 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy),
12706                                         msg, 0, NL80211_MCGRP_NAN, gfp);
12707         else
12708                 genlmsg_unicast(wiphy_net(&rdev->wiphy), msg,
12709                                 wdev->owner_nlportid);
12710
12711         return;
12712
12713 nla_put_failure:
12714         nlmsg_free(msg);
12715 }
12716 EXPORT_SYMBOL(cfg80211_nan_match);
12717
12718 void cfg80211_nan_func_terminated(struct wireless_dev *wdev,
12719                                   u8 inst_id,
12720                                   enum nl80211_nan_func_term_reason reason,
12721                                   u64 cookie, gfp_t gfp)
12722 {
12723         struct wiphy *wiphy = wdev->wiphy;
12724         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
12725         struct sk_buff *msg;
12726         struct nlattr *func_attr;
12727         void *hdr;
12728
12729         if (WARN_ON(!inst_id))
12730                 return;
12731
12732         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
12733         if (!msg)
12734                 return;
12735
12736         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_DEL_NAN_FUNCTION);
12737         if (!hdr) {
12738                 nlmsg_free(msg);
12739                 return;
12740         }
12741
12742         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
12743             (wdev->netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
12744                                          wdev->netdev->ifindex)) ||
12745             nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
12746                               NL80211_ATTR_PAD))
12747                 goto nla_put_failure;
12748
12749         if (nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, cookie,
12750                               NL80211_ATTR_PAD))
12751                 goto nla_put_failure;
12752
12753         func_attr = nla_nest_start_noflag(msg, NL80211_ATTR_NAN_FUNC);
12754         if (!func_attr)
12755                 goto nla_put_failure;
12756
12757         if (nla_put_u8(msg, NL80211_NAN_FUNC_INSTANCE_ID, inst_id) ||
12758             nla_put_u8(msg, NL80211_NAN_FUNC_TERM_REASON, reason))
12759                 goto nla_put_failure;
12760
12761         nla_nest_end(msg, func_attr);
12762         genlmsg_end(msg, hdr);
12763
12764         if (!wdev->owner_nlportid)
12765                 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy),
12766                                         msg, 0, NL80211_MCGRP_NAN, gfp);
12767         else
12768                 genlmsg_unicast(wiphy_net(&rdev->wiphy), msg,
12769                                 wdev->owner_nlportid);
12770
12771         return;
12772
12773 nla_put_failure:
12774         nlmsg_free(msg);
12775 }
12776 EXPORT_SYMBOL(cfg80211_nan_func_terminated);
12777
12778 static int nl80211_get_protocol_features(struct sk_buff *skb,
12779                                          struct genl_info *info)
12780 {
12781         void *hdr;
12782         struct sk_buff *msg;
12783
12784         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
12785         if (!msg)
12786                 return -ENOMEM;
12787
12788         hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
12789                              NL80211_CMD_GET_PROTOCOL_FEATURES);
12790         if (!hdr)
12791                 goto nla_put_failure;
12792
12793         if (nla_put_u32(msg, NL80211_ATTR_PROTOCOL_FEATURES,
12794                         NL80211_PROTOCOL_FEATURE_SPLIT_WIPHY_DUMP))
12795                 goto nla_put_failure;
12796
12797         genlmsg_end(msg, hdr);
12798         return genlmsg_reply(msg, info);
12799
12800  nla_put_failure:
12801         kfree_skb(msg);
12802         return -ENOBUFS;
12803 }
12804
12805 static int nl80211_update_ft_ies(struct sk_buff *skb, struct genl_info *info)
12806 {
12807         struct cfg80211_registered_device *rdev = info->user_ptr[0];
12808         struct cfg80211_update_ft_ies_params ft_params;
12809         struct net_device *dev = info->user_ptr[1];
12810
12811         if (!rdev->ops->update_ft_ies)
12812                 return -EOPNOTSUPP;
12813
12814         if (!info->attrs[NL80211_ATTR_MDID] ||
12815             !info->attrs[NL80211_ATTR_IE])
12816                 return -EINVAL;
12817
12818         memset(&ft_params, 0, sizeof(ft_params));
12819         ft_params.md = nla_get_u16(info->attrs[NL80211_ATTR_MDID]);
12820         ft_params.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
12821         ft_params.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
12822
12823         return rdev_update_ft_ies(rdev, dev, &ft_params);
12824 }
12825
12826 static int nl80211_crit_protocol_start(struct sk_buff *skb,
12827                                        struct genl_info *info)
12828 {
12829         struct cfg80211_registered_device *rdev = info->user_ptr[0];
12830         struct wireless_dev *wdev = info->user_ptr[1];
12831         enum nl80211_crit_proto_id proto = NL80211_CRIT_PROTO_UNSPEC;
12832         u16 duration;
12833         int ret;
12834
12835         if (!rdev->ops->crit_proto_start)
12836                 return -EOPNOTSUPP;
12837
12838         if (WARN_ON(!rdev->ops->crit_proto_stop))
12839                 return -EINVAL;
12840
12841         if (rdev->crit_proto_nlportid)
12842                 return -EBUSY;
12843
12844         /* determine protocol if provided */
12845         if (info->attrs[NL80211_ATTR_CRIT_PROT_ID])
12846                 proto = nla_get_u16(info->attrs[NL80211_ATTR_CRIT_PROT_ID]);
12847
12848         if (proto >= NUM_NL80211_CRIT_PROTO)
12849                 return -EINVAL;
12850
12851         /* timeout must be provided */
12852         if (!info->attrs[NL80211_ATTR_MAX_CRIT_PROT_DURATION])
12853                 return -EINVAL;
12854
12855         duration =
12856                 nla_get_u16(info->attrs[NL80211_ATTR_MAX_CRIT_PROT_DURATION]);
12857
12858         if (duration > NL80211_CRIT_PROTO_MAX_DURATION)
12859                 return -ERANGE;
12860
12861         ret = rdev_crit_proto_start(rdev, wdev, proto, duration);
12862         if (!ret)
12863                 rdev->crit_proto_nlportid = info->snd_portid;
12864
12865         return ret;
12866 }
12867
12868 static int nl80211_crit_protocol_stop(struct sk_buff *skb,
12869                                       struct genl_info *info)
12870 {
12871         struct cfg80211_registered_device *rdev = info->user_ptr[0];
12872         struct wireless_dev *wdev = info->user_ptr[1];
12873
12874         if (!rdev->ops->crit_proto_stop)
12875                 return -EOPNOTSUPP;
12876
12877         if (rdev->crit_proto_nlportid) {
12878                 rdev->crit_proto_nlportid = 0;
12879                 rdev_crit_proto_stop(rdev, wdev);
12880         }
12881         return 0;
12882 }
12883
12884 static int nl80211_vendor_check_policy(const struct wiphy_vendor_command *vcmd,
12885                                        struct nlattr *attr,
12886                                        struct netlink_ext_ack *extack)
12887 {
12888         if (vcmd->policy == VENDOR_CMD_RAW_DATA) {
12889                 if (attr->nla_type & NLA_F_NESTED) {
12890                         NL_SET_ERR_MSG_ATTR(extack, attr,
12891                                             "unexpected nested data");
12892                         return -EINVAL;
12893                 }
12894
12895                 return 0;
12896         }
12897
12898         if (!(attr->nla_type & NLA_F_NESTED)) {
12899                 NL_SET_ERR_MSG_ATTR(extack, attr, "expected nested data");
12900                 return -EINVAL;
12901         }
12902
12903         return nl80211_validate_nested(attr, vcmd->maxattr, vcmd->policy,
12904                                        extack);
12905 }
12906
12907 static int nl80211_vendor_cmd(struct sk_buff *skb, struct genl_info *info)
12908 {
12909         struct cfg80211_registered_device *rdev = info->user_ptr[0];
12910         struct wireless_dev *wdev =
12911                 __cfg80211_wdev_from_attrs(genl_info_net(info), info->attrs);
12912         int i, err;
12913         u32 vid, subcmd;
12914
12915         if (!rdev->wiphy.vendor_commands)
12916                 return -EOPNOTSUPP;
12917
12918         if (IS_ERR(wdev)) {
12919                 err = PTR_ERR(wdev);
12920                 if (err != -EINVAL)
12921                         return err;
12922                 wdev = NULL;
12923         } else if (wdev->wiphy != &rdev->wiphy) {
12924                 return -EINVAL;
12925         }
12926
12927         if (!info->attrs[NL80211_ATTR_VENDOR_ID] ||
12928             !info->attrs[NL80211_ATTR_VENDOR_SUBCMD])
12929                 return -EINVAL;
12930
12931         vid = nla_get_u32(info->attrs[NL80211_ATTR_VENDOR_ID]);
12932         subcmd = nla_get_u32(info->attrs[NL80211_ATTR_VENDOR_SUBCMD]);
12933         for (i = 0; i < rdev->wiphy.n_vendor_commands; i++) {
12934                 const struct wiphy_vendor_command *vcmd;
12935                 void *data = NULL;
12936                 int len = 0;
12937
12938                 vcmd = &rdev->wiphy.vendor_commands[i];
12939
12940                 if (vcmd->info.vendor_id != vid || vcmd->info.subcmd != subcmd)
12941                         continue;
12942
12943                 if (vcmd->flags & (WIPHY_VENDOR_CMD_NEED_WDEV |
12944                                    WIPHY_VENDOR_CMD_NEED_NETDEV)) {
12945                         if (!wdev)
12946                                 return -EINVAL;
12947                         if (vcmd->flags & WIPHY_VENDOR_CMD_NEED_NETDEV &&
12948                             !wdev->netdev)
12949                                 return -EINVAL;
12950
12951                         if (vcmd->flags & WIPHY_VENDOR_CMD_NEED_RUNNING) {
12952                                 if (!wdev_running(wdev))
12953                                         return -ENETDOWN;
12954                         }
12955
12956                         if (!vcmd->doit)
12957                                 return -EOPNOTSUPP;
12958                 } else {
12959                         wdev = NULL;
12960                 }
12961
12962                 if (info->attrs[NL80211_ATTR_VENDOR_DATA]) {
12963                         data = nla_data(info->attrs[NL80211_ATTR_VENDOR_DATA]);
12964                         len = nla_len(info->attrs[NL80211_ATTR_VENDOR_DATA]);
12965
12966                         err = nl80211_vendor_check_policy(vcmd,
12967                                         info->attrs[NL80211_ATTR_VENDOR_DATA],
12968                                         info->extack);
12969                         if (err)
12970                                 return err;
12971                 }
12972
12973                 rdev->cur_cmd_info = info;
12974                 err = vcmd->doit(&rdev->wiphy, wdev, data, len);
12975                 rdev->cur_cmd_info = NULL;
12976                 return err;
12977         }
12978
12979         return -EOPNOTSUPP;
12980 }
12981
12982 static int nl80211_prepare_vendor_dump(struct sk_buff *skb,
12983                                        struct netlink_callback *cb,
12984                                        struct cfg80211_registered_device **rdev,
12985                                        struct wireless_dev **wdev)
12986 {
12987         struct nlattr **attrbuf;
12988         u32 vid, subcmd;
12989         unsigned int i;
12990         int vcmd_idx = -1;
12991         int err;
12992         void *data = NULL;
12993         unsigned int data_len = 0;
12994
12995         if (cb->args[0]) {
12996                 /* subtract the 1 again here */
12997                 struct wiphy *wiphy = wiphy_idx_to_wiphy(cb->args[0] - 1);
12998                 struct wireless_dev *tmp;
12999
13000                 if (!wiphy)
13001                         return -ENODEV;
13002                 *rdev = wiphy_to_rdev(wiphy);
13003                 *wdev = NULL;
13004
13005                 if (cb->args[1]) {
13006                         list_for_each_entry(tmp, &wiphy->wdev_list, list) {
13007                                 if (tmp->identifier == cb->args[1] - 1) {
13008                                         *wdev = tmp;
13009                                         break;
13010                                 }
13011                         }
13012                 }
13013
13014                 /* keep rtnl locked in successful case */
13015                 return 0;
13016         }
13017
13018         attrbuf = kcalloc(NUM_NL80211_ATTR, sizeof(*attrbuf), GFP_KERNEL);
13019         if (!attrbuf)
13020                 return -ENOMEM;
13021
13022         err = nlmsg_parse_deprecated(cb->nlh,
13023                                      GENL_HDRLEN + nl80211_fam.hdrsize,
13024                                      attrbuf, nl80211_fam.maxattr,
13025                                      nl80211_policy, NULL);
13026         if (err)
13027                 goto out;
13028
13029         if (!attrbuf[NL80211_ATTR_VENDOR_ID] ||
13030             !attrbuf[NL80211_ATTR_VENDOR_SUBCMD]) {
13031                 err = -EINVAL;
13032                 goto out;
13033         }
13034
13035         *wdev = __cfg80211_wdev_from_attrs(sock_net(skb->sk), attrbuf);
13036         if (IS_ERR(*wdev))
13037                 *wdev = NULL;
13038
13039         *rdev = __cfg80211_rdev_from_attrs(sock_net(skb->sk), attrbuf);
13040         if (IS_ERR(*rdev)) {
13041                 err = PTR_ERR(*rdev);
13042                 goto out;
13043         }
13044
13045         vid = nla_get_u32(attrbuf[NL80211_ATTR_VENDOR_ID]);
13046         subcmd = nla_get_u32(attrbuf[NL80211_ATTR_VENDOR_SUBCMD]);
13047
13048         for (i = 0; i < (*rdev)->wiphy.n_vendor_commands; i++) {
13049                 const struct wiphy_vendor_command *vcmd;
13050
13051                 vcmd = &(*rdev)->wiphy.vendor_commands[i];
13052
13053                 if (vcmd->info.vendor_id != vid || vcmd->info.subcmd != subcmd)
13054                         continue;
13055
13056                 if (!vcmd->dumpit) {
13057                         err = -EOPNOTSUPP;
13058                         goto out;
13059                 }
13060
13061                 vcmd_idx = i;
13062                 break;
13063         }
13064
13065         if (vcmd_idx < 0) {
13066                 err = -EOPNOTSUPP;
13067                 goto out;
13068         }
13069
13070         if (attrbuf[NL80211_ATTR_VENDOR_DATA]) {
13071                 data = nla_data(attrbuf[NL80211_ATTR_VENDOR_DATA]);
13072                 data_len = nla_len(attrbuf[NL80211_ATTR_VENDOR_DATA]);
13073
13074                 err = nl80211_vendor_check_policy(
13075                                 &(*rdev)->wiphy.vendor_commands[vcmd_idx],
13076                                 attrbuf[NL80211_ATTR_VENDOR_DATA],
13077                                 cb->extack);
13078                 if (err)
13079                         goto out;
13080         }
13081
13082         /* 0 is the first index - add 1 to parse only once */
13083         cb->args[0] = (*rdev)->wiphy_idx + 1;
13084         /* add 1 to know if it was NULL */
13085         cb->args[1] = *wdev ? (*wdev)->identifier + 1 : 0;
13086         cb->args[2] = vcmd_idx;
13087         cb->args[3] = (unsigned long)data;
13088         cb->args[4] = data_len;
13089
13090         /* keep rtnl locked in successful case */
13091         err = 0;
13092 out:
13093         kfree(attrbuf);
13094         return err;
13095 }
13096
13097 static int nl80211_vendor_cmd_dump(struct sk_buff *skb,
13098                                    struct netlink_callback *cb)
13099 {
13100         struct cfg80211_registered_device *rdev;
13101         struct wireless_dev *wdev;
13102         unsigned int vcmd_idx;
13103         const struct wiphy_vendor_command *vcmd;
13104         void *data;
13105         int data_len;
13106         int err;
13107         struct nlattr *vendor_data;
13108
13109         rtnl_lock();
13110         err = nl80211_prepare_vendor_dump(skb, cb, &rdev, &wdev);
13111         if (err)
13112                 goto out;
13113
13114         vcmd_idx = cb->args[2];
13115         data = (void *)cb->args[3];
13116         data_len = cb->args[4];
13117         vcmd = &rdev->wiphy.vendor_commands[vcmd_idx];
13118
13119         if (vcmd->flags & (WIPHY_VENDOR_CMD_NEED_WDEV |
13120                            WIPHY_VENDOR_CMD_NEED_NETDEV)) {
13121                 if (!wdev) {
13122                         err = -EINVAL;
13123                         goto out;
13124                 }
13125                 if (vcmd->flags & WIPHY_VENDOR_CMD_NEED_NETDEV &&
13126                     !wdev->netdev) {
13127                         err = -EINVAL;
13128                         goto out;
13129                 }
13130
13131                 if (vcmd->flags & WIPHY_VENDOR_CMD_NEED_RUNNING) {
13132                         if (!wdev_running(wdev)) {
13133                                 err = -ENETDOWN;
13134                                 goto out;
13135                         }
13136                 }
13137         }
13138
13139         while (1) {
13140                 void *hdr = nl80211hdr_put(skb, NETLINK_CB(cb->skb).portid,
13141                                            cb->nlh->nlmsg_seq, NLM_F_MULTI,
13142                                            NL80211_CMD_VENDOR);
13143                 if (!hdr)
13144                         break;
13145
13146                 if (nla_put_u32(skb, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
13147                     (wdev && nla_put_u64_64bit(skb, NL80211_ATTR_WDEV,
13148                                                wdev_id(wdev),
13149                                                NL80211_ATTR_PAD))) {
13150                         genlmsg_cancel(skb, hdr);
13151                         break;
13152                 }
13153
13154                 vendor_data = nla_nest_start_noflag(skb,
13155                                                     NL80211_ATTR_VENDOR_DATA);
13156                 if (!vendor_data) {
13157                         genlmsg_cancel(skb, hdr);
13158                         break;
13159                 }
13160
13161                 err = vcmd->dumpit(&rdev->wiphy, wdev, skb, data, data_len,
13162                                    (unsigned long *)&cb->args[5]);
13163                 nla_nest_end(skb, vendor_data);
13164
13165                 if (err == -ENOBUFS || err == -ENOENT) {
13166                         genlmsg_cancel(skb, hdr);
13167                         break;
13168                 } else if (err) {
13169                         genlmsg_cancel(skb, hdr);
13170                         goto out;
13171                 }
13172
13173                 genlmsg_end(skb, hdr);
13174         }
13175
13176         err = skb->len;
13177  out:
13178         rtnl_unlock();
13179         return err;
13180 }
13181
13182 struct sk_buff *__cfg80211_alloc_reply_skb(struct wiphy *wiphy,
13183                                            enum nl80211_commands cmd,
13184                                            enum nl80211_attrs attr,
13185                                            int approxlen)
13186 {
13187         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
13188
13189         if (WARN_ON(!rdev->cur_cmd_info))
13190                 return NULL;
13191
13192         return __cfg80211_alloc_vendor_skb(rdev, NULL, approxlen,
13193                                            rdev->cur_cmd_info->snd_portid,
13194                                            rdev->cur_cmd_info->snd_seq,
13195                                            cmd, attr, NULL, GFP_KERNEL);
13196 }
13197 EXPORT_SYMBOL(__cfg80211_alloc_reply_skb);
13198
13199 int cfg80211_vendor_cmd_reply(struct sk_buff *skb)
13200 {
13201         struct cfg80211_registered_device *rdev = ((void **)skb->cb)[0];
13202         void *hdr = ((void **)skb->cb)[1];
13203         struct nlattr *data = ((void **)skb->cb)[2];
13204
13205         /* clear CB data for netlink core to own from now on */
13206         memset(skb->cb, 0, sizeof(skb->cb));
13207
13208         if (WARN_ON(!rdev->cur_cmd_info)) {
13209                 kfree_skb(skb);
13210                 return -EINVAL;
13211         }
13212
13213         nla_nest_end(skb, data);
13214         genlmsg_end(skb, hdr);
13215         return genlmsg_reply(skb, rdev->cur_cmd_info);
13216 }
13217 EXPORT_SYMBOL_GPL(cfg80211_vendor_cmd_reply);
13218
13219 unsigned int cfg80211_vendor_cmd_get_sender(struct wiphy *wiphy)
13220 {
13221         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
13222
13223         if (WARN_ON(!rdev->cur_cmd_info))
13224                 return 0;
13225
13226         return rdev->cur_cmd_info->snd_portid;
13227 }
13228 EXPORT_SYMBOL_GPL(cfg80211_vendor_cmd_get_sender);
13229
13230 static int nl80211_set_qos_map(struct sk_buff *skb,
13231                                struct genl_info *info)
13232 {
13233         struct cfg80211_registered_device *rdev = info->user_ptr[0];
13234         struct cfg80211_qos_map *qos_map = NULL;
13235         struct net_device *dev = info->user_ptr[1];
13236         u8 *pos, len, num_des, des_len, des;
13237         int ret;
13238
13239         if (!rdev->ops->set_qos_map)
13240                 return -EOPNOTSUPP;
13241
13242         if (info->attrs[NL80211_ATTR_QOS_MAP]) {
13243                 pos = nla_data(info->attrs[NL80211_ATTR_QOS_MAP]);
13244                 len = nla_len(info->attrs[NL80211_ATTR_QOS_MAP]);
13245
13246                 if (len % 2 || len < IEEE80211_QOS_MAP_LEN_MIN ||
13247                     len > IEEE80211_QOS_MAP_LEN_MAX)
13248                         return -EINVAL;
13249
13250                 qos_map = kzalloc(sizeof(struct cfg80211_qos_map), GFP_KERNEL);
13251                 if (!qos_map)
13252                         return -ENOMEM;
13253
13254                 num_des = (len - IEEE80211_QOS_MAP_LEN_MIN) >> 1;
13255                 if (num_des) {
13256                         des_len = num_des *
13257                                 sizeof(struct cfg80211_dscp_exception);
13258                         memcpy(qos_map->dscp_exception, pos, des_len);
13259                         qos_map->num_des = num_des;
13260                         for (des = 0; des < num_des; des++) {
13261                                 if (qos_map->dscp_exception[des].up > 7) {
13262                                         kfree(qos_map);
13263                                         return -EINVAL;
13264                                 }
13265                         }
13266                         pos += des_len;
13267                 }
13268                 memcpy(qos_map->up, pos, IEEE80211_QOS_MAP_LEN_MIN);
13269         }
13270
13271         wdev_lock(dev->ieee80211_ptr);
13272         ret = nl80211_key_allowed(dev->ieee80211_ptr);
13273         if (!ret)
13274                 ret = rdev_set_qos_map(rdev, dev, qos_map);
13275         wdev_unlock(dev->ieee80211_ptr);
13276
13277         kfree(qos_map);
13278         return ret;
13279 }
13280
13281 static int nl80211_add_tx_ts(struct sk_buff *skb, struct genl_info *info)
13282 {
13283         struct cfg80211_registered_device *rdev = info->user_ptr[0];
13284         struct net_device *dev = info->user_ptr[1];
13285         struct wireless_dev *wdev = dev->ieee80211_ptr;
13286         const u8 *peer;
13287         u8 tsid, up;
13288         u16 admitted_time = 0;
13289         int err;
13290
13291         if (!(rdev->wiphy.features & NL80211_FEATURE_SUPPORTS_WMM_ADMISSION))
13292                 return -EOPNOTSUPP;
13293
13294         if (!info->attrs[NL80211_ATTR_TSID] || !info->attrs[NL80211_ATTR_MAC] ||
13295             !info->attrs[NL80211_ATTR_USER_PRIO])
13296                 return -EINVAL;
13297
13298         tsid = nla_get_u8(info->attrs[NL80211_ATTR_TSID]);
13299         up = nla_get_u8(info->attrs[NL80211_ATTR_USER_PRIO]);
13300
13301         /* WMM uses TIDs 0-7 even for TSPEC */
13302         if (tsid >= IEEE80211_FIRST_TSPEC_TSID) {
13303                 /* TODO: handle 802.11 TSPEC/admission control
13304                  * need more attributes for that (e.g. BA session requirement);
13305                  * change the WMM adminssion test above to allow both then
13306                  */
13307                 return -EINVAL;
13308         }
13309
13310         peer = nla_data(info->attrs[NL80211_ATTR_MAC]);
13311
13312         if (info->attrs[NL80211_ATTR_ADMITTED_TIME]) {
13313                 admitted_time =
13314                         nla_get_u16(info->attrs[NL80211_ATTR_ADMITTED_TIME]);
13315                 if (!admitted_time)
13316                         return -EINVAL;
13317         }
13318
13319         wdev_lock(wdev);
13320         switch (wdev->iftype) {
13321         case NL80211_IFTYPE_STATION:
13322         case NL80211_IFTYPE_P2P_CLIENT:
13323                 if (wdev->current_bss)
13324                         break;
13325                 err = -ENOTCONN;
13326                 goto out;
13327         default:
13328                 err = -EOPNOTSUPP;
13329                 goto out;
13330         }
13331
13332         err = rdev_add_tx_ts(rdev, dev, tsid, peer, up, admitted_time);
13333
13334  out:
13335         wdev_unlock(wdev);
13336         return err;
13337 }
13338
13339 static int nl80211_del_tx_ts(struct sk_buff *skb, struct genl_info *info)
13340 {
13341         struct cfg80211_registered_device *rdev = info->user_ptr[0];
13342         struct net_device *dev = info->user_ptr[1];
13343         struct wireless_dev *wdev = dev->ieee80211_ptr;
13344         const u8 *peer;
13345         u8 tsid;
13346         int err;
13347
13348         if (!info->attrs[NL80211_ATTR_TSID] || !info->attrs[NL80211_ATTR_MAC])
13349                 return -EINVAL;
13350
13351         tsid = nla_get_u8(info->attrs[NL80211_ATTR_TSID]);
13352         peer = nla_data(info->attrs[NL80211_ATTR_MAC]);
13353
13354         wdev_lock(wdev);
13355         err = rdev_del_tx_ts(rdev, dev, tsid, peer);
13356         wdev_unlock(wdev);
13357
13358         return err;
13359 }
13360
13361 static int nl80211_tdls_channel_switch(struct sk_buff *skb,
13362                                        struct genl_info *info)
13363 {
13364         struct cfg80211_registered_device *rdev = info->user_ptr[0];
13365         struct net_device *dev = info->user_ptr[1];
13366         struct wireless_dev *wdev = dev->ieee80211_ptr;
13367         struct cfg80211_chan_def chandef = {};
13368         const u8 *addr;
13369         u8 oper_class;
13370         int err;
13371
13372         if (!rdev->ops->tdls_channel_switch ||
13373             !(rdev->wiphy.features & NL80211_FEATURE_TDLS_CHANNEL_SWITCH))
13374                 return -EOPNOTSUPP;
13375
13376         switch (dev->ieee80211_ptr->iftype) {
13377         case NL80211_IFTYPE_STATION:
13378         case NL80211_IFTYPE_P2P_CLIENT:
13379                 break;
13380         default:
13381                 return -EOPNOTSUPP;
13382         }
13383
13384         if (!info->attrs[NL80211_ATTR_MAC] ||
13385             !info->attrs[NL80211_ATTR_OPER_CLASS])
13386                 return -EINVAL;
13387
13388         err = nl80211_parse_chandef(rdev, info, &chandef);
13389         if (err)
13390                 return err;
13391
13392         /*
13393          * Don't allow wide channels on the 2.4Ghz band, as per IEEE802.11-2012
13394          * section 10.22.6.2.1. Disallow 5/10Mhz channels as well for now, the
13395          * specification is not defined for them.
13396          */
13397         if (chandef.chan->band == NL80211_BAND_2GHZ &&
13398             chandef.width != NL80211_CHAN_WIDTH_20_NOHT &&
13399             chandef.width != NL80211_CHAN_WIDTH_20)
13400                 return -EINVAL;
13401
13402         /* we will be active on the TDLS link */
13403         if (!cfg80211_reg_can_beacon_relax(&rdev->wiphy, &chandef,
13404                                            wdev->iftype))
13405                 return -EINVAL;
13406
13407         /* don't allow switching to DFS channels */
13408         if (cfg80211_chandef_dfs_required(wdev->wiphy, &chandef, wdev->iftype))
13409                 return -EINVAL;
13410
13411         addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
13412         oper_class = nla_get_u8(info->attrs[NL80211_ATTR_OPER_CLASS]);
13413
13414         wdev_lock(wdev);
13415         err = rdev_tdls_channel_switch(rdev, dev, addr, oper_class, &chandef);
13416         wdev_unlock(wdev);
13417
13418         return err;
13419 }
13420
13421 static int nl80211_tdls_cancel_channel_switch(struct sk_buff *skb,
13422                                               struct genl_info *info)
13423 {
13424         struct cfg80211_registered_device *rdev = info->user_ptr[0];
13425         struct net_device *dev = info->user_ptr[1];
13426         struct wireless_dev *wdev = dev->ieee80211_ptr;
13427         const u8 *addr;
13428
13429         if (!rdev->ops->tdls_channel_switch ||
13430             !rdev->ops->tdls_cancel_channel_switch ||
13431             !(rdev->wiphy.features & NL80211_FEATURE_TDLS_CHANNEL_SWITCH))
13432                 return -EOPNOTSUPP;
13433
13434         switch (dev->ieee80211_ptr->iftype) {
13435         case NL80211_IFTYPE_STATION:
13436         case NL80211_IFTYPE_P2P_CLIENT:
13437                 break;
13438         default:
13439                 return -EOPNOTSUPP;
13440         }
13441
13442         if (!info->attrs[NL80211_ATTR_MAC])
13443                 return -EINVAL;
13444
13445         addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
13446
13447         wdev_lock(wdev);
13448         rdev_tdls_cancel_channel_switch(rdev, dev, addr);
13449         wdev_unlock(wdev);
13450
13451         return 0;
13452 }
13453
13454 static int nl80211_set_multicast_to_unicast(struct sk_buff *skb,
13455                                             struct genl_info *info)
13456 {
13457         struct cfg80211_registered_device *rdev = info->user_ptr[0];
13458         struct net_device *dev = info->user_ptr[1];
13459         struct wireless_dev *wdev = dev->ieee80211_ptr;
13460         const struct nlattr *nla;
13461         bool enabled;
13462
13463         if (!rdev->ops->set_multicast_to_unicast)
13464                 return -EOPNOTSUPP;
13465
13466         if (wdev->iftype != NL80211_IFTYPE_AP &&
13467             wdev->iftype != NL80211_IFTYPE_P2P_GO)
13468                 return -EOPNOTSUPP;
13469
13470         nla = info->attrs[NL80211_ATTR_MULTICAST_TO_UNICAST_ENABLED];
13471         enabled = nla_get_flag(nla);
13472
13473         return rdev_set_multicast_to_unicast(rdev, dev, enabled);
13474 }
13475
13476 static int nl80211_set_pmk(struct sk_buff *skb, struct genl_info *info)
13477 {
13478         struct cfg80211_registered_device *rdev = info->user_ptr[0];
13479         struct net_device *dev = info->user_ptr[1];
13480         struct wireless_dev *wdev = dev->ieee80211_ptr;
13481         struct cfg80211_pmk_conf pmk_conf = {};
13482         int ret;
13483
13484         if (wdev->iftype != NL80211_IFTYPE_STATION &&
13485             wdev->iftype != NL80211_IFTYPE_P2P_CLIENT)
13486                 return -EOPNOTSUPP;
13487
13488         if (!wiphy_ext_feature_isset(&rdev->wiphy,
13489                                      NL80211_EXT_FEATURE_4WAY_HANDSHAKE_STA_1X))
13490                 return -EOPNOTSUPP;
13491
13492         if (!info->attrs[NL80211_ATTR_MAC] || !info->attrs[NL80211_ATTR_PMK])
13493                 return -EINVAL;
13494
13495         wdev_lock(wdev);
13496         if (!wdev->current_bss) {
13497                 ret = -ENOTCONN;
13498                 goto out;
13499         }
13500
13501         pmk_conf.aa = nla_data(info->attrs[NL80211_ATTR_MAC]);
13502         if (memcmp(pmk_conf.aa, wdev->current_bss->pub.bssid, ETH_ALEN)) {
13503                 ret = -EINVAL;
13504                 goto out;
13505         }
13506
13507         pmk_conf.pmk = nla_data(info->attrs[NL80211_ATTR_PMK]);
13508         pmk_conf.pmk_len = nla_len(info->attrs[NL80211_ATTR_PMK]);
13509         if (pmk_conf.pmk_len != WLAN_PMK_LEN &&
13510             pmk_conf.pmk_len != WLAN_PMK_LEN_SUITE_B_192) {
13511                 ret = -EINVAL;
13512                 goto out;
13513         }
13514
13515         if (info->attrs[NL80211_ATTR_PMKR0_NAME]) {
13516                 int r0_name_len = nla_len(info->attrs[NL80211_ATTR_PMKR0_NAME]);
13517
13518                 if (r0_name_len != WLAN_PMK_NAME_LEN) {
13519                         ret = -EINVAL;
13520                         goto out;
13521                 }
13522
13523                 pmk_conf.pmk_r0_name =
13524                         nla_data(info->attrs[NL80211_ATTR_PMKR0_NAME]);
13525         }
13526
13527         ret = rdev_set_pmk(rdev, dev, &pmk_conf);
13528 out:
13529         wdev_unlock(wdev);
13530         return ret;
13531 }
13532
13533 static int nl80211_del_pmk(struct sk_buff *skb, struct genl_info *info)
13534 {
13535         struct cfg80211_registered_device *rdev = info->user_ptr[0];
13536         struct net_device *dev = info->user_ptr[1];
13537         struct wireless_dev *wdev = dev->ieee80211_ptr;
13538         const u8 *aa;
13539         int ret;
13540
13541         if (wdev->iftype != NL80211_IFTYPE_STATION &&
13542             wdev->iftype != NL80211_IFTYPE_P2P_CLIENT)
13543                 return -EOPNOTSUPP;
13544
13545         if (!wiphy_ext_feature_isset(&rdev->wiphy,
13546                                      NL80211_EXT_FEATURE_4WAY_HANDSHAKE_STA_1X))
13547                 return -EOPNOTSUPP;
13548
13549         if (!info->attrs[NL80211_ATTR_MAC])
13550                 return -EINVAL;
13551
13552         wdev_lock(wdev);
13553         aa = nla_data(info->attrs[NL80211_ATTR_MAC]);
13554         ret = rdev_del_pmk(rdev, dev, aa);
13555         wdev_unlock(wdev);
13556
13557         return ret;
13558 }
13559
13560 static int nl80211_external_auth(struct sk_buff *skb, struct genl_info *info)
13561 {
13562         struct cfg80211_registered_device *rdev = info->user_ptr[0];
13563         struct net_device *dev = info->user_ptr[1];
13564         struct cfg80211_external_auth_params params;
13565
13566         if (!rdev->ops->external_auth)
13567                 return -EOPNOTSUPP;
13568
13569         if (!info->attrs[NL80211_ATTR_SSID] &&
13570             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
13571             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
13572                 return -EINVAL;
13573
13574         if (!info->attrs[NL80211_ATTR_BSSID])
13575                 return -EINVAL;
13576
13577         if (!info->attrs[NL80211_ATTR_STATUS_CODE])
13578                 return -EINVAL;
13579
13580         memset(&params, 0, sizeof(params));
13581
13582         if (info->attrs[NL80211_ATTR_SSID]) {
13583                 params.ssid.ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
13584                 if (params.ssid.ssid_len == 0 ||
13585                     params.ssid.ssid_len > IEEE80211_MAX_SSID_LEN)
13586                         return -EINVAL;
13587                 memcpy(params.ssid.ssid,
13588                        nla_data(info->attrs[NL80211_ATTR_SSID]),
13589                        params.ssid.ssid_len);
13590         }
13591
13592         memcpy(params.bssid, nla_data(info->attrs[NL80211_ATTR_BSSID]),
13593                ETH_ALEN);
13594
13595         params.status = nla_get_u16(info->attrs[NL80211_ATTR_STATUS_CODE]);
13596
13597         if (info->attrs[NL80211_ATTR_PMKID])
13598                 params.pmkid = nla_data(info->attrs[NL80211_ATTR_PMKID]);
13599
13600         return rdev_external_auth(rdev, dev, &params);
13601 }
13602
13603 static int nl80211_tx_control_port(struct sk_buff *skb, struct genl_info *info)
13604 {
13605         struct cfg80211_registered_device *rdev = info->user_ptr[0];
13606         struct net_device *dev = info->user_ptr[1];
13607         struct wireless_dev *wdev = dev->ieee80211_ptr;
13608         const u8 *buf;
13609         size_t len;
13610         u8 *dest;
13611         u16 proto;
13612         bool noencrypt;
13613         int err;
13614
13615         if (!wiphy_ext_feature_isset(&rdev->wiphy,
13616                                      NL80211_EXT_FEATURE_CONTROL_PORT_OVER_NL80211))
13617                 return -EOPNOTSUPP;
13618
13619         if (!rdev->ops->tx_control_port)
13620                 return -EOPNOTSUPP;
13621
13622         if (!info->attrs[NL80211_ATTR_FRAME] ||
13623             !info->attrs[NL80211_ATTR_MAC] ||
13624             !info->attrs[NL80211_ATTR_CONTROL_PORT_ETHERTYPE]) {
13625                 GENL_SET_ERR_MSG(info, "Frame, MAC or ethertype missing");
13626                 return -EINVAL;
13627         }
13628
13629         wdev_lock(wdev);
13630
13631         switch (wdev->iftype) {
13632         case NL80211_IFTYPE_AP:
13633         case NL80211_IFTYPE_P2P_GO:
13634         case NL80211_IFTYPE_MESH_POINT:
13635                 break;
13636         case NL80211_IFTYPE_ADHOC:
13637         case NL80211_IFTYPE_STATION:
13638         case NL80211_IFTYPE_P2P_CLIENT:
13639                 if (wdev->current_bss)
13640                         break;
13641                 err = -ENOTCONN;
13642                 goto out;
13643         default:
13644                 err = -EOPNOTSUPP;
13645                 goto out;
13646         }
13647
13648         wdev_unlock(wdev);
13649
13650         buf = nla_data(info->attrs[NL80211_ATTR_FRAME]);
13651         len = nla_len(info->attrs[NL80211_ATTR_FRAME]);
13652         dest = nla_data(info->attrs[NL80211_ATTR_MAC]);
13653         proto = nla_get_u16(info->attrs[NL80211_ATTR_CONTROL_PORT_ETHERTYPE]);
13654         noencrypt =
13655                 nla_get_flag(info->attrs[NL80211_ATTR_CONTROL_PORT_NO_ENCRYPT]);
13656
13657         return rdev_tx_control_port(rdev, dev, buf, len,
13658                                     dest, cpu_to_be16(proto), noencrypt);
13659
13660  out:
13661         wdev_unlock(wdev);
13662         return err;
13663 }
13664
13665 static int nl80211_get_ftm_responder_stats(struct sk_buff *skb,
13666                                            struct genl_info *info)
13667 {
13668         struct cfg80211_registered_device *rdev = info->user_ptr[0];
13669         struct net_device *dev = info->user_ptr[1];
13670         struct wireless_dev *wdev = dev->ieee80211_ptr;
13671         struct cfg80211_ftm_responder_stats ftm_stats = {};
13672         struct sk_buff *msg;
13673         void *hdr;
13674         struct nlattr *ftm_stats_attr;
13675         int err;
13676
13677         if (wdev->iftype != NL80211_IFTYPE_AP || !wdev->beacon_interval)
13678                 return -EOPNOTSUPP;
13679
13680         err = rdev_get_ftm_responder_stats(rdev, dev, &ftm_stats);
13681         if (err)
13682                 return err;
13683
13684         if (!ftm_stats.filled)
13685                 return -ENODATA;
13686
13687         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
13688         if (!msg)
13689                 return -ENOMEM;
13690
13691         hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
13692                              NL80211_CMD_GET_FTM_RESPONDER_STATS);
13693         if (!hdr)
13694                 goto nla_put_failure;
13695
13696         if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex))
13697                 goto nla_put_failure;
13698
13699         ftm_stats_attr = nla_nest_start_noflag(msg,
13700                                                NL80211_ATTR_FTM_RESPONDER_STATS);
13701         if (!ftm_stats_attr)
13702                 goto nla_put_failure;
13703
13704 #define SET_FTM(field, name, type)                                       \
13705         do { if ((ftm_stats.filled & BIT(NL80211_FTM_STATS_ ## name)) && \
13706             nla_put_ ## type(msg, NL80211_FTM_STATS_ ## name,            \
13707                              ftm_stats.field))                           \
13708                 goto nla_put_failure; } while (0)
13709 #define SET_FTM_U64(field, name)                                         \
13710         do { if ((ftm_stats.filled & BIT(NL80211_FTM_STATS_ ## name)) && \
13711             nla_put_u64_64bit(msg, NL80211_FTM_STATS_ ## name,           \
13712                               ftm_stats.field, NL80211_FTM_STATS_PAD))   \
13713                 goto nla_put_failure; } while (0)
13714
13715         SET_FTM(success_num, SUCCESS_NUM, u32);
13716         SET_FTM(partial_num, PARTIAL_NUM, u32);
13717         SET_FTM(failed_num, FAILED_NUM, u32);
13718         SET_FTM(asap_num, ASAP_NUM, u32);
13719         SET_FTM(non_asap_num, NON_ASAP_NUM, u32);
13720         SET_FTM_U64(total_duration_ms, TOTAL_DURATION_MSEC);
13721         SET_FTM(unknown_triggers_num, UNKNOWN_TRIGGERS_NUM, u32);
13722         SET_FTM(reschedule_requests_num, RESCHEDULE_REQUESTS_NUM, u32);
13723         SET_FTM(out_of_window_triggers_num, OUT_OF_WINDOW_TRIGGERS_NUM, u32);
13724 #undef SET_FTM
13725
13726         nla_nest_end(msg, ftm_stats_attr);
13727
13728         genlmsg_end(msg, hdr);
13729         return genlmsg_reply(msg, info);
13730
13731 nla_put_failure:
13732         nlmsg_free(msg);
13733         return -ENOBUFS;
13734 }
13735
13736 static int nl80211_update_owe_info(struct sk_buff *skb, struct genl_info *info)
13737 {
13738         struct cfg80211_registered_device *rdev = info->user_ptr[0];
13739         struct cfg80211_update_owe_info owe_info;
13740         struct net_device *dev = info->user_ptr[1];
13741
13742         if (!rdev->ops->update_owe_info)
13743                 return -EOPNOTSUPP;
13744
13745         if (!info->attrs[NL80211_ATTR_STATUS_CODE] ||
13746             !info->attrs[NL80211_ATTR_MAC])
13747                 return -EINVAL;
13748
13749         memset(&owe_info, 0, sizeof(owe_info));
13750         owe_info.status = nla_get_u16(info->attrs[NL80211_ATTR_STATUS_CODE]);
13751         nla_memcpy(owe_info.peer, info->attrs[NL80211_ATTR_MAC], ETH_ALEN);
13752
13753         if (info->attrs[NL80211_ATTR_IE]) {
13754                 owe_info.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
13755                 owe_info.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
13756         }
13757
13758         return rdev_update_owe_info(rdev, dev, &owe_info);
13759 }
13760
13761 static int nl80211_probe_mesh_link(struct sk_buff *skb, struct genl_info *info)
13762 {
13763         struct cfg80211_registered_device *rdev = info->user_ptr[0];
13764         struct net_device *dev = info->user_ptr[1];
13765         struct wireless_dev *wdev = dev->ieee80211_ptr;
13766         struct station_info sinfo = {};
13767         const u8 *buf;
13768         size_t len;
13769         u8 *dest;
13770         int err;
13771
13772         if (!rdev->ops->probe_mesh_link || !rdev->ops->get_station)
13773                 return -EOPNOTSUPP;
13774
13775         if (!info->attrs[NL80211_ATTR_MAC] ||
13776             !info->attrs[NL80211_ATTR_FRAME]) {
13777                 GENL_SET_ERR_MSG(info, "Frame or MAC missing");
13778                 return -EINVAL;
13779         }
13780
13781         if (wdev->iftype != NL80211_IFTYPE_MESH_POINT)
13782                 return -EOPNOTSUPP;
13783
13784         dest = nla_data(info->attrs[NL80211_ATTR_MAC]);
13785         buf = nla_data(info->attrs[NL80211_ATTR_FRAME]);
13786         len = nla_len(info->attrs[NL80211_ATTR_FRAME]);
13787
13788         if (len < sizeof(struct ethhdr))
13789                 return -EINVAL;
13790
13791         if (!ether_addr_equal(buf, dest) || is_multicast_ether_addr(buf) ||
13792             !ether_addr_equal(buf + ETH_ALEN, dev->dev_addr))
13793                 return -EINVAL;
13794
13795         err = rdev_get_station(rdev, dev, dest, &sinfo);
13796         if (err)
13797                 return err;
13798
13799         return rdev_probe_mesh_link(rdev, dev, dest, buf, len);
13800 }
13801
13802 #define NL80211_FLAG_NEED_WIPHY         0x01
13803 #define NL80211_FLAG_NEED_NETDEV        0x02
13804 #define NL80211_FLAG_NEED_RTNL          0x04
13805 #define NL80211_FLAG_CHECK_NETDEV_UP    0x08
13806 #define NL80211_FLAG_NEED_NETDEV_UP     (NL80211_FLAG_NEED_NETDEV |\
13807                                          NL80211_FLAG_CHECK_NETDEV_UP)
13808 #define NL80211_FLAG_NEED_WDEV          0x10
13809 /* If a netdev is associated, it must be UP, P2P must be started */
13810 #define NL80211_FLAG_NEED_WDEV_UP       (NL80211_FLAG_NEED_WDEV |\
13811                                          NL80211_FLAG_CHECK_NETDEV_UP)
13812 #define NL80211_FLAG_CLEAR_SKB          0x20
13813
13814 static int nl80211_pre_doit(const struct genl_ops *ops, struct sk_buff *skb,
13815                             struct genl_info *info)
13816 {
13817         struct cfg80211_registered_device *rdev;
13818         struct wireless_dev *wdev;
13819         struct net_device *dev;
13820         bool rtnl = ops->internal_flags & NL80211_FLAG_NEED_RTNL;
13821
13822         if (rtnl)
13823                 rtnl_lock();
13824
13825         if (ops->internal_flags & NL80211_FLAG_NEED_WIPHY) {
13826                 rdev = cfg80211_get_dev_from_info(genl_info_net(info), info);
13827                 if (IS_ERR(rdev)) {
13828                         if (rtnl)
13829                                 rtnl_unlock();
13830                         return PTR_ERR(rdev);
13831                 }
13832                 info->user_ptr[0] = rdev;
13833         } else if (ops->internal_flags & NL80211_FLAG_NEED_NETDEV ||
13834                    ops->internal_flags & NL80211_FLAG_NEED_WDEV) {
13835                 ASSERT_RTNL();
13836
13837                 wdev = __cfg80211_wdev_from_attrs(genl_info_net(info),
13838                                                   info->attrs);
13839                 if (IS_ERR(wdev)) {
13840                         if (rtnl)
13841                                 rtnl_unlock();
13842                         return PTR_ERR(wdev);
13843                 }
13844
13845                 dev = wdev->netdev;
13846                 rdev = wiphy_to_rdev(wdev->wiphy);
13847
13848                 if (ops->internal_flags & NL80211_FLAG_NEED_NETDEV) {
13849                         if (!dev) {
13850                                 if (rtnl)
13851                                         rtnl_unlock();
13852                                 return -EINVAL;
13853                         }
13854
13855                         info->user_ptr[1] = dev;
13856                 } else {
13857                         info->user_ptr[1] = wdev;
13858                 }
13859
13860                 if (ops->internal_flags & NL80211_FLAG_CHECK_NETDEV_UP &&
13861                     !wdev_running(wdev)) {
13862                         if (rtnl)
13863                                 rtnl_unlock();
13864                         return -ENETDOWN;
13865                 }
13866
13867                 if (dev)
13868                         dev_hold(dev);
13869
13870                 info->user_ptr[0] = rdev;
13871         }
13872
13873         return 0;
13874 }
13875
13876 static void nl80211_post_doit(const struct genl_ops *ops, struct sk_buff *skb,
13877                               struct genl_info *info)
13878 {
13879         if (info->user_ptr[1]) {
13880                 if (ops->internal_flags & NL80211_FLAG_NEED_WDEV) {
13881                         struct wireless_dev *wdev = info->user_ptr[1];
13882
13883                         if (wdev->netdev)
13884                                 dev_put(wdev->netdev);
13885                 } else {
13886                         dev_put(info->user_ptr[1]);
13887                 }
13888         }
13889
13890         if (ops->internal_flags & NL80211_FLAG_NEED_RTNL)
13891                 rtnl_unlock();
13892
13893         /* If needed, clear the netlink message payload from the SKB
13894          * as it might contain key data that shouldn't stick around on
13895          * the heap after the SKB is freed. The netlink message header
13896          * is still needed for further processing, so leave it intact.
13897          */
13898         if (ops->internal_flags & NL80211_FLAG_CLEAR_SKB) {
13899                 struct nlmsghdr *nlh = nlmsg_hdr(skb);
13900
13901                 memset(nlmsg_data(nlh), 0, nlmsg_len(nlh));
13902         }
13903 }
13904
13905 static const struct genl_ops nl80211_ops[] = {
13906         {
13907                 .cmd = NL80211_CMD_GET_WIPHY,
13908                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
13909                 .doit = nl80211_get_wiphy,
13910                 .dumpit = nl80211_dump_wiphy,
13911                 .done = nl80211_dump_wiphy_done,
13912                 /* can be retrieved by unprivileged users */
13913                 .internal_flags = NL80211_FLAG_NEED_WIPHY |
13914                                   NL80211_FLAG_NEED_RTNL,
13915         },
13916         {
13917                 .cmd = NL80211_CMD_SET_WIPHY,
13918                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
13919                 .doit = nl80211_set_wiphy,
13920                 .flags = GENL_UNS_ADMIN_PERM,
13921                 .internal_flags = NL80211_FLAG_NEED_RTNL,
13922         },
13923         {
13924                 .cmd = NL80211_CMD_GET_INTERFACE,
13925                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
13926                 .doit = nl80211_get_interface,
13927                 .dumpit = nl80211_dump_interface,
13928                 /* can be retrieved by unprivileged users */
13929                 .internal_flags = NL80211_FLAG_NEED_WDEV |
13930                                   NL80211_FLAG_NEED_RTNL,
13931         },
13932         {
13933                 .cmd = NL80211_CMD_SET_INTERFACE,
13934                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
13935                 .doit = nl80211_set_interface,
13936                 .flags = GENL_UNS_ADMIN_PERM,
13937                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
13938                                   NL80211_FLAG_NEED_RTNL,
13939         },
13940         {
13941                 .cmd = NL80211_CMD_NEW_INTERFACE,
13942                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
13943                 .doit = nl80211_new_interface,
13944                 .flags = GENL_UNS_ADMIN_PERM,
13945                 .internal_flags = NL80211_FLAG_NEED_WIPHY |
13946                                   NL80211_FLAG_NEED_RTNL,
13947         },
13948         {
13949                 .cmd = NL80211_CMD_DEL_INTERFACE,
13950                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
13951                 .doit = nl80211_del_interface,
13952                 .flags = GENL_UNS_ADMIN_PERM,
13953                 .internal_flags = NL80211_FLAG_NEED_WDEV |
13954                                   NL80211_FLAG_NEED_RTNL,
13955         },
13956         {
13957                 .cmd = NL80211_CMD_GET_KEY,
13958                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
13959                 .doit = nl80211_get_key,
13960                 .flags = GENL_UNS_ADMIN_PERM,
13961                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
13962                                   NL80211_FLAG_NEED_RTNL,
13963         },
13964         {
13965                 .cmd = NL80211_CMD_SET_KEY,
13966                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
13967                 .doit = nl80211_set_key,
13968                 .flags = GENL_UNS_ADMIN_PERM,
13969                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
13970                                   NL80211_FLAG_NEED_RTNL |
13971                                   NL80211_FLAG_CLEAR_SKB,
13972         },
13973         {
13974                 .cmd = NL80211_CMD_NEW_KEY,
13975                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
13976                 .doit = nl80211_new_key,
13977                 .flags = GENL_UNS_ADMIN_PERM,
13978                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
13979                                   NL80211_FLAG_NEED_RTNL |
13980                                   NL80211_FLAG_CLEAR_SKB,
13981         },
13982         {
13983                 .cmd = NL80211_CMD_DEL_KEY,
13984                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
13985                 .doit = nl80211_del_key,
13986                 .flags = GENL_UNS_ADMIN_PERM,
13987                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
13988                                   NL80211_FLAG_NEED_RTNL,
13989         },
13990         {
13991                 .cmd = NL80211_CMD_SET_BEACON,
13992                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
13993                 .flags = GENL_UNS_ADMIN_PERM,
13994                 .doit = nl80211_set_beacon,
13995                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
13996                                   NL80211_FLAG_NEED_RTNL,
13997         },
13998         {
13999                 .cmd = NL80211_CMD_START_AP,
14000                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14001                 .flags = GENL_UNS_ADMIN_PERM,
14002                 .doit = nl80211_start_ap,
14003                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14004                                   NL80211_FLAG_NEED_RTNL,
14005         },
14006         {
14007                 .cmd = NL80211_CMD_STOP_AP,
14008                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14009                 .flags = GENL_UNS_ADMIN_PERM,
14010                 .doit = nl80211_stop_ap,
14011                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14012                                   NL80211_FLAG_NEED_RTNL,
14013         },
14014         {
14015                 .cmd = NL80211_CMD_GET_STATION,
14016                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14017                 .doit = nl80211_get_station,
14018                 .dumpit = nl80211_dump_station,
14019                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
14020                                   NL80211_FLAG_NEED_RTNL,
14021         },
14022         {
14023                 .cmd = NL80211_CMD_SET_STATION,
14024                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14025                 .doit = nl80211_set_station,
14026                 .flags = GENL_UNS_ADMIN_PERM,
14027                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14028                                   NL80211_FLAG_NEED_RTNL,
14029         },
14030         {
14031                 .cmd = NL80211_CMD_NEW_STATION,
14032                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14033                 .doit = nl80211_new_station,
14034                 .flags = GENL_UNS_ADMIN_PERM,
14035                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14036                                   NL80211_FLAG_NEED_RTNL,
14037         },
14038         {
14039                 .cmd = NL80211_CMD_DEL_STATION,
14040                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14041                 .doit = nl80211_del_station,
14042                 .flags = GENL_UNS_ADMIN_PERM,
14043                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14044                                   NL80211_FLAG_NEED_RTNL,
14045         },
14046         {
14047                 .cmd = NL80211_CMD_GET_MPATH,
14048                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14049                 .doit = nl80211_get_mpath,
14050                 .dumpit = nl80211_dump_mpath,
14051                 .flags = GENL_UNS_ADMIN_PERM,
14052                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14053                                   NL80211_FLAG_NEED_RTNL,
14054         },
14055         {
14056                 .cmd = NL80211_CMD_GET_MPP,
14057                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14058                 .doit = nl80211_get_mpp,
14059                 .dumpit = nl80211_dump_mpp,
14060                 .flags = GENL_UNS_ADMIN_PERM,
14061                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14062                                   NL80211_FLAG_NEED_RTNL,
14063         },
14064         {
14065                 .cmd = NL80211_CMD_SET_MPATH,
14066                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14067                 .doit = nl80211_set_mpath,
14068                 .flags = GENL_UNS_ADMIN_PERM,
14069                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14070                                   NL80211_FLAG_NEED_RTNL,
14071         },
14072         {
14073                 .cmd = NL80211_CMD_NEW_MPATH,
14074                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14075                 .doit = nl80211_new_mpath,
14076                 .flags = GENL_UNS_ADMIN_PERM,
14077                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14078                                   NL80211_FLAG_NEED_RTNL,
14079         },
14080         {
14081                 .cmd = NL80211_CMD_DEL_MPATH,
14082                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14083                 .doit = nl80211_del_mpath,
14084                 .flags = GENL_UNS_ADMIN_PERM,
14085                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14086                                   NL80211_FLAG_NEED_RTNL,
14087         },
14088         {
14089                 .cmd = NL80211_CMD_SET_BSS,
14090                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14091                 .doit = nl80211_set_bss,
14092                 .flags = GENL_UNS_ADMIN_PERM,
14093                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14094                                   NL80211_FLAG_NEED_RTNL,
14095         },
14096         {
14097                 .cmd = NL80211_CMD_GET_REG,
14098                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14099                 .doit = nl80211_get_reg_do,
14100                 .dumpit = nl80211_get_reg_dump,
14101                 .internal_flags = NL80211_FLAG_NEED_RTNL,
14102                 /* can be retrieved by unprivileged users */
14103         },
14104 #ifdef CONFIG_CFG80211_CRDA_SUPPORT
14105         {
14106                 .cmd = NL80211_CMD_SET_REG,
14107                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14108                 .doit = nl80211_set_reg,
14109                 .flags = GENL_ADMIN_PERM,
14110                 .internal_flags = NL80211_FLAG_NEED_RTNL,
14111         },
14112 #endif
14113         {
14114                 .cmd = NL80211_CMD_REQ_SET_REG,
14115                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14116                 .doit = nl80211_req_set_reg,
14117                 .flags = GENL_ADMIN_PERM,
14118         },
14119         {
14120                 .cmd = NL80211_CMD_RELOAD_REGDB,
14121                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14122                 .doit = nl80211_reload_regdb,
14123                 .flags = GENL_ADMIN_PERM,
14124         },
14125         {
14126                 .cmd = NL80211_CMD_GET_MESH_CONFIG,
14127                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14128                 .doit = nl80211_get_mesh_config,
14129                 /* can be retrieved by unprivileged users */
14130                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14131                                   NL80211_FLAG_NEED_RTNL,
14132         },
14133         {
14134                 .cmd = NL80211_CMD_SET_MESH_CONFIG,
14135                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14136                 .doit = nl80211_update_mesh_config,
14137                 .flags = GENL_UNS_ADMIN_PERM,
14138                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14139                                   NL80211_FLAG_NEED_RTNL,
14140         },
14141         {
14142                 .cmd = NL80211_CMD_TRIGGER_SCAN,
14143                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14144                 .doit = nl80211_trigger_scan,
14145                 .flags = GENL_UNS_ADMIN_PERM,
14146                 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
14147                                   NL80211_FLAG_NEED_RTNL,
14148         },
14149         {
14150                 .cmd = NL80211_CMD_ABORT_SCAN,
14151                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14152                 .doit = nl80211_abort_scan,
14153                 .flags = GENL_UNS_ADMIN_PERM,
14154                 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
14155                                   NL80211_FLAG_NEED_RTNL,
14156         },
14157         {
14158                 .cmd = NL80211_CMD_GET_SCAN,
14159                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14160                 .dumpit = nl80211_dump_scan,
14161         },
14162         {
14163                 .cmd = NL80211_CMD_START_SCHED_SCAN,
14164                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14165                 .doit = nl80211_start_sched_scan,
14166                 .flags = GENL_UNS_ADMIN_PERM,
14167                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14168                                   NL80211_FLAG_NEED_RTNL,
14169         },
14170         {
14171                 .cmd = NL80211_CMD_STOP_SCHED_SCAN,
14172                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14173                 .doit = nl80211_stop_sched_scan,
14174                 .flags = GENL_UNS_ADMIN_PERM,
14175                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14176                                   NL80211_FLAG_NEED_RTNL,
14177         },
14178         {
14179                 .cmd = NL80211_CMD_AUTHENTICATE,
14180                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14181                 .doit = nl80211_authenticate,
14182                 .flags = GENL_UNS_ADMIN_PERM,
14183                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14184                                   NL80211_FLAG_NEED_RTNL |
14185                                   NL80211_FLAG_CLEAR_SKB,
14186         },
14187         {
14188                 .cmd = NL80211_CMD_ASSOCIATE,
14189                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14190                 .doit = nl80211_associate,
14191                 .flags = GENL_UNS_ADMIN_PERM,
14192                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14193                                   NL80211_FLAG_NEED_RTNL |
14194                                   NL80211_FLAG_CLEAR_SKB,
14195         },
14196         {
14197                 .cmd = NL80211_CMD_DEAUTHENTICATE,
14198                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14199                 .doit = nl80211_deauthenticate,
14200                 .flags = GENL_UNS_ADMIN_PERM,
14201                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14202                                   NL80211_FLAG_NEED_RTNL,
14203         },
14204         {
14205                 .cmd = NL80211_CMD_DISASSOCIATE,
14206                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14207                 .doit = nl80211_disassociate,
14208                 .flags = GENL_UNS_ADMIN_PERM,
14209                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14210                                   NL80211_FLAG_NEED_RTNL,
14211         },
14212         {
14213                 .cmd = NL80211_CMD_JOIN_IBSS,
14214                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14215                 .doit = nl80211_join_ibss,
14216                 .flags = GENL_UNS_ADMIN_PERM,
14217                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14218                                   NL80211_FLAG_NEED_RTNL,
14219         },
14220         {
14221                 .cmd = NL80211_CMD_LEAVE_IBSS,
14222                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14223                 .doit = nl80211_leave_ibss,
14224                 .flags = GENL_UNS_ADMIN_PERM,
14225                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14226                                   NL80211_FLAG_NEED_RTNL,
14227         },
14228 #ifdef CONFIG_NL80211_TESTMODE
14229         {
14230                 .cmd = NL80211_CMD_TESTMODE,
14231                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14232                 .doit = nl80211_testmode_do,
14233                 .dumpit = nl80211_testmode_dump,
14234                 .flags = GENL_UNS_ADMIN_PERM,
14235                 .internal_flags = NL80211_FLAG_NEED_WIPHY |
14236                                   NL80211_FLAG_NEED_RTNL,
14237         },
14238 #endif
14239         {
14240                 .cmd = NL80211_CMD_CONNECT,
14241                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14242                 .doit = nl80211_connect,
14243                 .flags = GENL_UNS_ADMIN_PERM,
14244                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14245                                   NL80211_FLAG_NEED_RTNL |
14246                                   NL80211_FLAG_CLEAR_SKB,
14247         },
14248         {
14249                 .cmd = NL80211_CMD_UPDATE_CONNECT_PARAMS,
14250                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14251                 .doit = nl80211_update_connect_params,
14252                 .flags = GENL_ADMIN_PERM,
14253                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14254                                   NL80211_FLAG_NEED_RTNL |
14255                                   NL80211_FLAG_CLEAR_SKB,
14256         },
14257         {
14258                 .cmd = NL80211_CMD_DISCONNECT,
14259                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14260                 .doit = nl80211_disconnect,
14261                 .flags = GENL_UNS_ADMIN_PERM,
14262                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14263                                   NL80211_FLAG_NEED_RTNL,
14264         },
14265         {
14266                 .cmd = NL80211_CMD_SET_WIPHY_NETNS,
14267                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14268                 .doit = nl80211_wiphy_netns,
14269                 .flags = GENL_UNS_ADMIN_PERM,
14270                 .internal_flags = NL80211_FLAG_NEED_WIPHY |
14271                                   NL80211_FLAG_NEED_RTNL,
14272         },
14273         {
14274                 .cmd = NL80211_CMD_GET_SURVEY,
14275                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14276                 .dumpit = nl80211_dump_survey,
14277         },
14278         {
14279                 .cmd = NL80211_CMD_SET_PMKSA,
14280                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14281                 .doit = nl80211_setdel_pmksa,
14282                 .flags = GENL_UNS_ADMIN_PERM,
14283                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14284                                   NL80211_FLAG_NEED_RTNL |
14285                                   NL80211_FLAG_CLEAR_SKB,
14286         },
14287         {
14288                 .cmd = NL80211_CMD_DEL_PMKSA,
14289                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14290                 .doit = nl80211_setdel_pmksa,
14291                 .flags = GENL_UNS_ADMIN_PERM,
14292                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14293                                   NL80211_FLAG_NEED_RTNL,
14294         },
14295         {
14296                 .cmd = NL80211_CMD_FLUSH_PMKSA,
14297                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14298                 .doit = nl80211_flush_pmksa,
14299                 .flags = GENL_UNS_ADMIN_PERM,
14300                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14301                                   NL80211_FLAG_NEED_RTNL,
14302         },
14303         {
14304                 .cmd = NL80211_CMD_REMAIN_ON_CHANNEL,
14305                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14306                 .doit = nl80211_remain_on_channel,
14307                 .flags = GENL_UNS_ADMIN_PERM,
14308                 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
14309                                   NL80211_FLAG_NEED_RTNL,
14310         },
14311         {
14312                 .cmd = NL80211_CMD_CANCEL_REMAIN_ON_CHANNEL,
14313                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14314                 .doit = nl80211_cancel_remain_on_channel,
14315                 .flags = GENL_UNS_ADMIN_PERM,
14316                 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
14317                                   NL80211_FLAG_NEED_RTNL,
14318         },
14319         {
14320                 .cmd = NL80211_CMD_SET_TX_BITRATE_MASK,
14321                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14322                 .doit = nl80211_set_tx_bitrate_mask,
14323                 .flags = GENL_UNS_ADMIN_PERM,
14324                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
14325                                   NL80211_FLAG_NEED_RTNL,
14326         },
14327         {
14328                 .cmd = NL80211_CMD_REGISTER_FRAME,
14329                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14330                 .doit = nl80211_register_mgmt,
14331                 .flags = GENL_UNS_ADMIN_PERM,
14332                 .internal_flags = NL80211_FLAG_NEED_WDEV |
14333                                   NL80211_FLAG_NEED_RTNL,
14334         },
14335         {
14336                 .cmd = NL80211_CMD_FRAME,
14337                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14338                 .doit = nl80211_tx_mgmt,
14339                 .flags = GENL_UNS_ADMIN_PERM,
14340                 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
14341                                   NL80211_FLAG_NEED_RTNL,
14342         },
14343         {
14344                 .cmd = NL80211_CMD_FRAME_WAIT_CANCEL,
14345                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14346                 .doit = nl80211_tx_mgmt_cancel_wait,
14347                 .flags = GENL_UNS_ADMIN_PERM,
14348                 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
14349                                   NL80211_FLAG_NEED_RTNL,
14350         },
14351         {
14352                 .cmd = NL80211_CMD_SET_POWER_SAVE,
14353                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14354                 .doit = nl80211_set_power_save,
14355                 .flags = GENL_UNS_ADMIN_PERM,
14356                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
14357                                   NL80211_FLAG_NEED_RTNL,
14358         },
14359         {
14360                 .cmd = NL80211_CMD_GET_POWER_SAVE,
14361                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14362                 .doit = nl80211_get_power_save,
14363                 /* can be retrieved by unprivileged users */
14364                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
14365                                   NL80211_FLAG_NEED_RTNL,
14366         },
14367         {
14368                 .cmd = NL80211_CMD_SET_CQM,
14369                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14370                 .doit = nl80211_set_cqm,
14371                 .flags = GENL_UNS_ADMIN_PERM,
14372                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
14373                                   NL80211_FLAG_NEED_RTNL,
14374         },
14375         {
14376                 .cmd = NL80211_CMD_SET_CHANNEL,
14377                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14378                 .doit = nl80211_set_channel,
14379                 .flags = GENL_UNS_ADMIN_PERM,
14380                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
14381                                   NL80211_FLAG_NEED_RTNL,
14382         },
14383         {
14384                 .cmd = NL80211_CMD_SET_WDS_PEER,
14385                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14386                 .doit = nl80211_set_wds_peer,
14387                 .flags = GENL_UNS_ADMIN_PERM,
14388                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
14389                                   NL80211_FLAG_NEED_RTNL,
14390         },
14391         {
14392                 .cmd = NL80211_CMD_JOIN_MESH,
14393                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14394                 .doit = nl80211_join_mesh,
14395                 .flags = GENL_UNS_ADMIN_PERM,
14396                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14397                                   NL80211_FLAG_NEED_RTNL,
14398         },
14399         {
14400                 .cmd = NL80211_CMD_LEAVE_MESH,
14401                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14402                 .doit = nl80211_leave_mesh,
14403                 .flags = GENL_UNS_ADMIN_PERM,
14404                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14405                                   NL80211_FLAG_NEED_RTNL,
14406         },
14407         {
14408                 .cmd = NL80211_CMD_JOIN_OCB,
14409                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14410                 .doit = nl80211_join_ocb,
14411                 .flags = GENL_UNS_ADMIN_PERM,
14412                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14413                                   NL80211_FLAG_NEED_RTNL,
14414         },
14415         {
14416                 .cmd = NL80211_CMD_LEAVE_OCB,
14417                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14418                 .doit = nl80211_leave_ocb,
14419                 .flags = GENL_UNS_ADMIN_PERM,
14420                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14421                                   NL80211_FLAG_NEED_RTNL,
14422         },
14423 #ifdef CONFIG_PM
14424         {
14425                 .cmd = NL80211_CMD_GET_WOWLAN,
14426                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14427                 .doit = nl80211_get_wowlan,
14428                 /* can be retrieved by unprivileged users */
14429                 .internal_flags = NL80211_FLAG_NEED_WIPHY |
14430                                   NL80211_FLAG_NEED_RTNL,
14431         },
14432         {
14433                 .cmd = NL80211_CMD_SET_WOWLAN,
14434                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14435                 .doit = nl80211_set_wowlan,
14436                 .flags = GENL_UNS_ADMIN_PERM,
14437                 .internal_flags = NL80211_FLAG_NEED_WIPHY |
14438                                   NL80211_FLAG_NEED_RTNL,
14439         },
14440 #endif
14441         {
14442                 .cmd = NL80211_CMD_SET_REKEY_OFFLOAD,
14443                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14444                 .doit = nl80211_set_rekey_data,
14445                 .flags = GENL_UNS_ADMIN_PERM,
14446                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14447                                   NL80211_FLAG_NEED_RTNL |
14448                                   NL80211_FLAG_CLEAR_SKB,
14449         },
14450         {
14451                 .cmd = NL80211_CMD_TDLS_MGMT,
14452                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14453                 .doit = nl80211_tdls_mgmt,
14454                 .flags = GENL_UNS_ADMIN_PERM,
14455                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14456                                   NL80211_FLAG_NEED_RTNL,
14457         },
14458         {
14459                 .cmd = NL80211_CMD_TDLS_OPER,
14460                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14461                 .doit = nl80211_tdls_oper,
14462                 .flags = GENL_UNS_ADMIN_PERM,
14463                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14464                                   NL80211_FLAG_NEED_RTNL,
14465         },
14466         {
14467                 .cmd = NL80211_CMD_UNEXPECTED_FRAME,
14468                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14469                 .doit = nl80211_register_unexpected_frame,
14470                 .flags = GENL_UNS_ADMIN_PERM,
14471                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
14472                                   NL80211_FLAG_NEED_RTNL,
14473         },
14474         {
14475                 .cmd = NL80211_CMD_PROBE_CLIENT,
14476                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14477                 .doit = nl80211_probe_client,
14478                 .flags = GENL_UNS_ADMIN_PERM,
14479                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14480                                   NL80211_FLAG_NEED_RTNL,
14481         },
14482         {
14483                 .cmd = NL80211_CMD_REGISTER_BEACONS,
14484                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14485                 .doit = nl80211_register_beacons,
14486                 .flags = GENL_UNS_ADMIN_PERM,
14487                 .internal_flags = NL80211_FLAG_NEED_WIPHY |
14488                                   NL80211_FLAG_NEED_RTNL,
14489         },
14490         {
14491                 .cmd = NL80211_CMD_SET_NOACK_MAP,
14492                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14493                 .doit = nl80211_set_noack_map,
14494                 .flags = GENL_UNS_ADMIN_PERM,
14495                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
14496                                   NL80211_FLAG_NEED_RTNL,
14497         },
14498         {
14499                 .cmd = NL80211_CMD_START_P2P_DEVICE,
14500                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14501                 .doit = nl80211_start_p2p_device,
14502                 .flags = GENL_UNS_ADMIN_PERM,
14503                 .internal_flags = NL80211_FLAG_NEED_WDEV |
14504                                   NL80211_FLAG_NEED_RTNL,
14505         },
14506         {
14507                 .cmd = NL80211_CMD_STOP_P2P_DEVICE,
14508                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14509                 .doit = nl80211_stop_p2p_device,
14510                 .flags = GENL_UNS_ADMIN_PERM,
14511                 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
14512                                   NL80211_FLAG_NEED_RTNL,
14513         },
14514         {
14515                 .cmd = NL80211_CMD_START_NAN,
14516                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14517                 .doit = nl80211_start_nan,
14518                 .flags = GENL_ADMIN_PERM,
14519                 .internal_flags = NL80211_FLAG_NEED_WDEV |
14520                                   NL80211_FLAG_NEED_RTNL,
14521         },
14522         {
14523                 .cmd = NL80211_CMD_STOP_NAN,
14524                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14525                 .doit = nl80211_stop_nan,
14526                 .flags = GENL_ADMIN_PERM,
14527                 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
14528                                   NL80211_FLAG_NEED_RTNL,
14529         },
14530         {
14531                 .cmd = NL80211_CMD_ADD_NAN_FUNCTION,
14532                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14533                 .doit = nl80211_nan_add_func,
14534                 .flags = GENL_ADMIN_PERM,
14535                 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
14536                                   NL80211_FLAG_NEED_RTNL,
14537         },
14538         {
14539                 .cmd = NL80211_CMD_DEL_NAN_FUNCTION,
14540                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14541                 .doit = nl80211_nan_del_func,
14542                 .flags = GENL_ADMIN_PERM,
14543                 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
14544                                   NL80211_FLAG_NEED_RTNL,
14545         },
14546         {
14547                 .cmd = NL80211_CMD_CHANGE_NAN_CONFIG,
14548                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14549                 .doit = nl80211_nan_change_config,
14550                 .flags = GENL_ADMIN_PERM,
14551                 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
14552                                   NL80211_FLAG_NEED_RTNL,
14553         },
14554         {
14555                 .cmd = NL80211_CMD_SET_MCAST_RATE,
14556                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14557                 .doit = nl80211_set_mcast_rate,
14558                 .flags = GENL_UNS_ADMIN_PERM,
14559                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
14560                                   NL80211_FLAG_NEED_RTNL,
14561         },
14562         {
14563                 .cmd = NL80211_CMD_SET_MAC_ACL,
14564                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14565                 .doit = nl80211_set_mac_acl,
14566                 .flags = GENL_UNS_ADMIN_PERM,
14567                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
14568                                   NL80211_FLAG_NEED_RTNL,
14569         },
14570         {
14571                 .cmd = NL80211_CMD_RADAR_DETECT,
14572                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14573                 .doit = nl80211_start_radar_detection,
14574                 .flags = GENL_UNS_ADMIN_PERM,
14575                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14576                                   NL80211_FLAG_NEED_RTNL,
14577         },
14578         {
14579                 .cmd = NL80211_CMD_GET_PROTOCOL_FEATURES,
14580                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14581                 .doit = nl80211_get_protocol_features,
14582         },
14583         {
14584                 .cmd = NL80211_CMD_UPDATE_FT_IES,
14585                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14586                 .doit = nl80211_update_ft_ies,
14587                 .flags = GENL_UNS_ADMIN_PERM,
14588                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14589                                   NL80211_FLAG_NEED_RTNL,
14590         },
14591         {
14592                 .cmd = NL80211_CMD_CRIT_PROTOCOL_START,
14593                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14594                 .doit = nl80211_crit_protocol_start,
14595                 .flags = GENL_UNS_ADMIN_PERM,
14596                 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
14597                                   NL80211_FLAG_NEED_RTNL,
14598         },
14599         {
14600                 .cmd = NL80211_CMD_CRIT_PROTOCOL_STOP,
14601                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14602                 .doit = nl80211_crit_protocol_stop,
14603                 .flags = GENL_UNS_ADMIN_PERM,
14604                 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
14605                                   NL80211_FLAG_NEED_RTNL,
14606         },
14607         {
14608                 .cmd = NL80211_CMD_GET_COALESCE,
14609                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14610                 .doit = nl80211_get_coalesce,
14611                 .internal_flags = NL80211_FLAG_NEED_WIPHY |
14612                                   NL80211_FLAG_NEED_RTNL,
14613         },
14614         {
14615                 .cmd = NL80211_CMD_SET_COALESCE,
14616                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14617                 .doit = nl80211_set_coalesce,
14618                 .flags = GENL_UNS_ADMIN_PERM,
14619                 .internal_flags = NL80211_FLAG_NEED_WIPHY |
14620                                   NL80211_FLAG_NEED_RTNL,
14621         },
14622         {
14623                 .cmd = NL80211_CMD_CHANNEL_SWITCH,
14624                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14625                 .doit = nl80211_channel_switch,
14626                 .flags = GENL_UNS_ADMIN_PERM,
14627                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14628                                   NL80211_FLAG_NEED_RTNL,
14629         },
14630         {
14631                 .cmd = NL80211_CMD_VENDOR,
14632                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14633                 .doit = nl80211_vendor_cmd,
14634                 .dumpit = nl80211_vendor_cmd_dump,
14635                 .flags = GENL_UNS_ADMIN_PERM,
14636                 .internal_flags = NL80211_FLAG_NEED_WIPHY |
14637                                   NL80211_FLAG_NEED_RTNL |
14638                                   NL80211_FLAG_CLEAR_SKB,
14639         },
14640         {
14641                 .cmd = NL80211_CMD_SET_QOS_MAP,
14642                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14643                 .doit = nl80211_set_qos_map,
14644                 .flags = GENL_UNS_ADMIN_PERM,
14645                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14646                                   NL80211_FLAG_NEED_RTNL,
14647         },
14648         {
14649                 .cmd = NL80211_CMD_ADD_TX_TS,
14650                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14651                 .doit = nl80211_add_tx_ts,
14652                 .flags = GENL_UNS_ADMIN_PERM,
14653                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14654                                   NL80211_FLAG_NEED_RTNL,
14655         },
14656         {
14657                 .cmd = NL80211_CMD_DEL_TX_TS,
14658                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14659                 .doit = nl80211_del_tx_ts,
14660                 .flags = GENL_UNS_ADMIN_PERM,
14661                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14662                                   NL80211_FLAG_NEED_RTNL,
14663         },
14664         {
14665                 .cmd = NL80211_CMD_TDLS_CHANNEL_SWITCH,
14666                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14667                 .doit = nl80211_tdls_channel_switch,
14668                 .flags = GENL_UNS_ADMIN_PERM,
14669                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14670                                   NL80211_FLAG_NEED_RTNL,
14671         },
14672         {
14673                 .cmd = NL80211_CMD_TDLS_CANCEL_CHANNEL_SWITCH,
14674                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14675                 .doit = nl80211_tdls_cancel_channel_switch,
14676                 .flags = GENL_UNS_ADMIN_PERM,
14677                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14678                                   NL80211_FLAG_NEED_RTNL,
14679         },
14680         {
14681                 .cmd = NL80211_CMD_SET_MULTICAST_TO_UNICAST,
14682                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14683                 .doit = nl80211_set_multicast_to_unicast,
14684                 .flags = GENL_UNS_ADMIN_PERM,
14685                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
14686                                   NL80211_FLAG_NEED_RTNL,
14687         },
14688         {
14689                 .cmd = NL80211_CMD_SET_PMK,
14690                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14691                 .doit = nl80211_set_pmk,
14692                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14693                                   NL80211_FLAG_NEED_RTNL |
14694                                   NL80211_FLAG_CLEAR_SKB,
14695         },
14696         {
14697                 .cmd = NL80211_CMD_DEL_PMK,
14698                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14699                 .doit = nl80211_del_pmk,
14700                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14701                                   NL80211_FLAG_NEED_RTNL,
14702         },
14703         {
14704                 .cmd = NL80211_CMD_EXTERNAL_AUTH,
14705                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14706                 .doit = nl80211_external_auth,
14707                 .flags = GENL_ADMIN_PERM,
14708                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14709                                   NL80211_FLAG_NEED_RTNL,
14710         },
14711         {
14712                 .cmd = NL80211_CMD_CONTROL_PORT_FRAME,
14713                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14714                 .doit = nl80211_tx_control_port,
14715                 .flags = GENL_UNS_ADMIN_PERM,
14716                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14717                                   NL80211_FLAG_NEED_RTNL,
14718         },
14719         {
14720                 .cmd = NL80211_CMD_GET_FTM_RESPONDER_STATS,
14721                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14722                 .doit = nl80211_get_ftm_responder_stats,
14723                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
14724                                   NL80211_FLAG_NEED_RTNL,
14725         },
14726         {
14727                 .cmd = NL80211_CMD_PEER_MEASUREMENT_START,
14728                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14729                 .doit = nl80211_pmsr_start,
14730                 .flags = GENL_UNS_ADMIN_PERM,
14731                 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
14732                                   NL80211_FLAG_NEED_RTNL,
14733         },
14734         {
14735                 .cmd = NL80211_CMD_NOTIFY_RADAR,
14736                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14737                 .doit = nl80211_notify_radar_detection,
14738                 .flags = GENL_UNS_ADMIN_PERM,
14739                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14740                                   NL80211_FLAG_NEED_RTNL,
14741         },
14742         {
14743                 .cmd = NL80211_CMD_UPDATE_OWE_INFO,
14744                 .doit = nl80211_update_owe_info,
14745                 .flags = GENL_ADMIN_PERM,
14746                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14747                                   NL80211_FLAG_NEED_RTNL,
14748         },
14749         {
14750                 .cmd = NL80211_CMD_PROBE_MESH_LINK,
14751                 .doit = nl80211_probe_mesh_link,
14752                 .flags = GENL_UNS_ADMIN_PERM,
14753                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14754                                   NL80211_FLAG_NEED_RTNL,
14755         },
14756 };
14757
14758 static struct genl_family nl80211_fam __ro_after_init = {
14759         .name = NL80211_GENL_NAME,      /* have users key off the name instead */
14760         .hdrsize = 0,                   /* no private header */
14761         .version = 1,                   /* no particular meaning now */
14762         .maxattr = NL80211_ATTR_MAX,
14763         .policy = nl80211_policy,
14764         .netnsok = true,
14765         .pre_doit = nl80211_pre_doit,
14766         .post_doit = nl80211_post_doit,
14767         .module = THIS_MODULE,
14768         .ops = nl80211_ops,
14769         .n_ops = ARRAY_SIZE(nl80211_ops),
14770         .mcgrps = nl80211_mcgrps,
14771         .n_mcgrps = ARRAY_SIZE(nl80211_mcgrps),
14772         .parallel_ops = true,
14773 };
14774
14775 /* notification functions */
14776
14777 void nl80211_notify_wiphy(struct cfg80211_registered_device *rdev,
14778                           enum nl80211_commands cmd)
14779 {
14780         struct sk_buff *msg;
14781         struct nl80211_dump_wiphy_state state = {};
14782
14783         WARN_ON(cmd != NL80211_CMD_NEW_WIPHY &&
14784                 cmd != NL80211_CMD_DEL_WIPHY);
14785
14786         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
14787         if (!msg)
14788                 return;
14789
14790         if (nl80211_send_wiphy(rdev, cmd, msg, 0, 0, 0, &state) < 0) {
14791                 nlmsg_free(msg);
14792                 return;
14793         }
14794
14795         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
14796                                 NL80211_MCGRP_CONFIG, GFP_KERNEL);
14797 }
14798
14799 void nl80211_notify_iface(struct cfg80211_registered_device *rdev,
14800                                 struct wireless_dev *wdev,
14801                                 enum nl80211_commands cmd)
14802 {
14803         struct sk_buff *msg;
14804
14805         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
14806         if (!msg)
14807                 return;
14808
14809         if (nl80211_send_iface(msg, 0, 0, 0, rdev, wdev, cmd) < 0) {
14810                 nlmsg_free(msg);
14811                 return;
14812         }
14813
14814         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
14815                                 NL80211_MCGRP_CONFIG, GFP_KERNEL);
14816 }
14817
14818 static int nl80211_add_scan_req(struct sk_buff *msg,
14819                                 struct cfg80211_registered_device *rdev)
14820 {
14821         struct cfg80211_scan_request *req = rdev->scan_req;
14822         struct nlattr *nest;
14823         int i;
14824
14825         if (WARN_ON(!req))
14826                 return 0;
14827
14828         nest = nla_nest_start_noflag(msg, NL80211_ATTR_SCAN_SSIDS);
14829         if (!nest)
14830                 goto nla_put_failure;
14831         for (i = 0; i < req->n_ssids; i++) {
14832                 if (nla_put(msg, i, req->ssids[i].ssid_len, req->ssids[i].ssid))
14833                         goto nla_put_failure;
14834         }
14835         nla_nest_end(msg, nest);
14836
14837         nest = nla_nest_start_noflag(msg, NL80211_ATTR_SCAN_FREQUENCIES);
14838         if (!nest)
14839                 goto nla_put_failure;
14840         for (i = 0; i < req->n_channels; i++) {
14841                 if (nla_put_u32(msg, i, req->channels[i]->center_freq))
14842                         goto nla_put_failure;
14843         }
14844         nla_nest_end(msg, nest);
14845
14846         if (req->ie &&
14847             nla_put(msg, NL80211_ATTR_IE, req->ie_len, req->ie))
14848                 goto nla_put_failure;
14849
14850         if (req->flags &&
14851             nla_put_u32(msg, NL80211_ATTR_SCAN_FLAGS, req->flags))
14852                 goto nla_put_failure;
14853
14854         if (req->info.scan_start_tsf &&
14855             (nla_put_u64_64bit(msg, NL80211_ATTR_SCAN_START_TIME_TSF,
14856                                req->info.scan_start_tsf, NL80211_BSS_PAD) ||
14857              nla_put(msg, NL80211_ATTR_SCAN_START_TIME_TSF_BSSID, ETH_ALEN,
14858                      req->info.tsf_bssid)))
14859                 goto nla_put_failure;
14860
14861         return 0;
14862  nla_put_failure:
14863         return -ENOBUFS;
14864 }
14865
14866 static int nl80211_prep_scan_msg(struct sk_buff *msg,
14867                                  struct cfg80211_registered_device *rdev,
14868                                  struct wireless_dev *wdev,
14869                                  u32 portid, u32 seq, int flags,
14870                                  u32 cmd)
14871 {
14872         void *hdr;
14873
14874         hdr = nl80211hdr_put(msg, portid, seq, flags, cmd);
14875         if (!hdr)
14876                 return -1;
14877
14878         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
14879             (wdev->netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
14880                                          wdev->netdev->ifindex)) ||
14881             nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
14882                               NL80211_ATTR_PAD))
14883                 goto nla_put_failure;
14884
14885         /* ignore errors and send incomplete event anyway */
14886         nl80211_add_scan_req(msg, rdev);
14887
14888         genlmsg_end(msg, hdr);
14889         return 0;
14890
14891  nla_put_failure:
14892         genlmsg_cancel(msg, hdr);
14893         return -EMSGSIZE;
14894 }
14895
14896 static int
14897 nl80211_prep_sched_scan_msg(struct sk_buff *msg,
14898                             struct cfg80211_sched_scan_request *req, u32 cmd)
14899 {
14900         void *hdr;
14901
14902         hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
14903         if (!hdr)
14904                 return -1;
14905
14906         if (nla_put_u32(msg, NL80211_ATTR_WIPHY,
14907                         wiphy_to_rdev(req->wiphy)->wiphy_idx) ||
14908             nla_put_u32(msg, NL80211_ATTR_IFINDEX, req->dev->ifindex) ||
14909             nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, req->reqid,
14910                               NL80211_ATTR_PAD))
14911                 goto nla_put_failure;
14912
14913         genlmsg_end(msg, hdr);
14914         return 0;
14915
14916  nla_put_failure:
14917         genlmsg_cancel(msg, hdr);
14918         return -EMSGSIZE;
14919 }
14920
14921 void nl80211_send_scan_start(struct cfg80211_registered_device *rdev,
14922                              struct wireless_dev *wdev)
14923 {
14924         struct sk_buff *msg;
14925
14926         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
14927         if (!msg)
14928                 return;
14929
14930         if (nl80211_prep_scan_msg(msg, rdev, wdev, 0, 0, 0,
14931                                   NL80211_CMD_TRIGGER_SCAN) < 0) {
14932                 nlmsg_free(msg);
14933                 return;
14934         }
14935
14936         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
14937                                 NL80211_MCGRP_SCAN, GFP_KERNEL);
14938 }
14939
14940 struct sk_buff *nl80211_build_scan_msg(struct cfg80211_registered_device *rdev,
14941                                        struct wireless_dev *wdev, bool aborted)
14942 {
14943         struct sk_buff *msg;
14944
14945         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
14946         if (!msg)
14947                 return NULL;
14948
14949         if (nl80211_prep_scan_msg(msg, rdev, wdev, 0, 0, 0,
14950                                   aborted ? NL80211_CMD_SCAN_ABORTED :
14951                                             NL80211_CMD_NEW_SCAN_RESULTS) < 0) {
14952                 nlmsg_free(msg);
14953                 return NULL;
14954         }
14955
14956         return msg;
14957 }
14958
14959 /* send message created by nl80211_build_scan_msg() */
14960 void nl80211_send_scan_msg(struct cfg80211_registered_device *rdev,
14961                            struct sk_buff *msg)
14962 {
14963         if (!msg)
14964                 return;
14965
14966         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
14967                                 NL80211_MCGRP_SCAN, GFP_KERNEL);
14968 }
14969
14970 void nl80211_send_sched_scan(struct cfg80211_sched_scan_request *req, u32 cmd)
14971 {
14972         struct sk_buff *msg;
14973
14974         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
14975         if (!msg)
14976                 return;
14977
14978         if (nl80211_prep_sched_scan_msg(msg, req, cmd) < 0) {
14979                 nlmsg_free(msg);
14980                 return;
14981         }
14982
14983         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(req->wiphy), msg, 0,
14984                                 NL80211_MCGRP_SCAN, GFP_KERNEL);
14985 }
14986
14987 static bool nl80211_reg_change_event_fill(struct sk_buff *msg,
14988                                           struct regulatory_request *request)
14989 {
14990         /* Userspace can always count this one always being set */
14991         if (nla_put_u8(msg, NL80211_ATTR_REG_INITIATOR, request->initiator))
14992                 goto nla_put_failure;
14993
14994         if (request->alpha2[0] == '0' && request->alpha2[1] == '0') {
14995                 if (nla_put_u8(msg, NL80211_ATTR_REG_TYPE,
14996                                NL80211_REGDOM_TYPE_WORLD))
14997                         goto nla_put_failure;
14998         } else if (request->alpha2[0] == '9' && request->alpha2[1] == '9') {
14999                 if (nla_put_u8(msg, NL80211_ATTR_REG_TYPE,
15000                                NL80211_REGDOM_TYPE_CUSTOM_WORLD))
15001                         goto nla_put_failure;
15002         } else if ((request->alpha2[0] == '9' && request->alpha2[1] == '8') ||
15003                    request->intersect) {
15004                 if (nla_put_u8(msg, NL80211_ATTR_REG_TYPE,
15005                                NL80211_REGDOM_TYPE_INTERSECTION))
15006                         goto nla_put_failure;
15007         } else {
15008                 if (nla_put_u8(msg, NL80211_ATTR_REG_TYPE,
15009                                NL80211_REGDOM_TYPE_COUNTRY) ||
15010                     nla_put_string(msg, NL80211_ATTR_REG_ALPHA2,
15011                                    request->alpha2))
15012                         goto nla_put_failure;
15013         }
15014
15015         if (request->wiphy_idx != WIPHY_IDX_INVALID) {
15016                 struct wiphy *wiphy = wiphy_idx_to_wiphy(request->wiphy_idx);
15017
15018                 if (wiphy &&
15019                     nla_put_u32(msg, NL80211_ATTR_WIPHY, request->wiphy_idx))
15020                         goto nla_put_failure;
15021
15022                 if (wiphy &&
15023                     wiphy->regulatory_flags & REGULATORY_WIPHY_SELF_MANAGED &&
15024                     nla_put_flag(msg, NL80211_ATTR_WIPHY_SELF_MANAGED_REG))
15025                         goto nla_put_failure;
15026         }
15027
15028         return true;
15029
15030 nla_put_failure:
15031         return false;
15032 }
15033
15034 /*
15035  * This can happen on global regulatory changes or device specific settings
15036  * based on custom regulatory domains.
15037  */
15038 void nl80211_common_reg_change_event(enum nl80211_commands cmd_id,
15039                                      struct regulatory_request *request)
15040 {
15041         struct sk_buff *msg;
15042         void *hdr;
15043
15044         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
15045         if (!msg)
15046                 return;
15047
15048         hdr = nl80211hdr_put(msg, 0, 0, 0, cmd_id);
15049         if (!hdr)
15050                 goto nla_put_failure;
15051
15052         if (!nl80211_reg_change_event_fill(msg, request))
15053                 goto nla_put_failure;
15054
15055         genlmsg_end(msg, hdr);
15056
15057         rcu_read_lock();
15058         genlmsg_multicast_allns(&nl80211_fam, msg, 0,
15059                                 NL80211_MCGRP_REGULATORY, GFP_ATOMIC);
15060         rcu_read_unlock();
15061
15062         return;
15063
15064 nla_put_failure:
15065         nlmsg_free(msg);
15066 }
15067
15068 static void nl80211_send_mlme_event(struct cfg80211_registered_device *rdev,
15069                                     struct net_device *netdev,
15070                                     const u8 *buf, size_t len,
15071                                     enum nl80211_commands cmd, gfp_t gfp,
15072                                     int uapsd_queues, const u8 *req_ies,
15073                                     size_t req_ies_len)
15074 {
15075         struct sk_buff *msg;
15076         void *hdr;
15077
15078         msg = nlmsg_new(100 + len + req_ies_len, gfp);
15079         if (!msg)
15080                 return;
15081
15082         hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
15083         if (!hdr) {
15084                 nlmsg_free(msg);
15085                 return;
15086         }
15087
15088         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
15089             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
15090             nla_put(msg, NL80211_ATTR_FRAME, len, buf) ||
15091             (req_ies &&
15092              nla_put(msg, NL80211_ATTR_REQ_IE, req_ies_len, req_ies)))
15093                 goto nla_put_failure;
15094
15095         if (uapsd_queues >= 0) {
15096                 struct nlattr *nla_wmm =
15097                         nla_nest_start_noflag(msg, NL80211_ATTR_STA_WME);
15098                 if (!nla_wmm)
15099                         goto nla_put_failure;
15100
15101                 if (nla_put_u8(msg, NL80211_STA_WME_UAPSD_QUEUES,
15102                                uapsd_queues))
15103                         goto nla_put_failure;
15104
15105                 nla_nest_end(msg, nla_wmm);
15106         }
15107
15108         genlmsg_end(msg, hdr);
15109
15110         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
15111                                 NL80211_MCGRP_MLME, gfp);
15112         return;
15113
15114  nla_put_failure:
15115         nlmsg_free(msg);
15116 }
15117
15118 void nl80211_send_rx_auth(struct cfg80211_registered_device *rdev,
15119                           struct net_device *netdev, const u8 *buf,
15120                           size_t len, gfp_t gfp)
15121 {
15122         nl80211_send_mlme_event(rdev, netdev, buf, len,
15123                                 NL80211_CMD_AUTHENTICATE, gfp, -1, NULL, 0);
15124 }
15125
15126 void nl80211_send_rx_assoc(struct cfg80211_registered_device *rdev,
15127                            struct net_device *netdev, const u8 *buf,
15128                            size_t len, gfp_t gfp, int uapsd_queues,
15129                            const u8 *req_ies, size_t req_ies_len)
15130 {
15131         nl80211_send_mlme_event(rdev, netdev, buf, len,
15132                                 NL80211_CMD_ASSOCIATE, gfp, uapsd_queues,
15133                                 req_ies, req_ies_len);
15134 }
15135
15136 void nl80211_send_deauth(struct cfg80211_registered_device *rdev,
15137                          struct net_device *netdev, const u8 *buf,
15138                          size_t len, gfp_t gfp)
15139 {
15140         nl80211_send_mlme_event(rdev, netdev, buf, len,
15141                                 NL80211_CMD_DEAUTHENTICATE, gfp, -1, NULL, 0);
15142 }
15143
15144 void nl80211_send_disassoc(struct cfg80211_registered_device *rdev,
15145                            struct net_device *netdev, const u8 *buf,
15146                            size_t len, gfp_t gfp)
15147 {
15148         nl80211_send_mlme_event(rdev, netdev, buf, len,
15149                                 NL80211_CMD_DISASSOCIATE, gfp, -1, NULL, 0);
15150 }
15151
15152 void cfg80211_rx_unprot_mlme_mgmt(struct net_device *dev, const u8 *buf,
15153                                   size_t len)
15154 {
15155         struct wireless_dev *wdev = dev->ieee80211_ptr;
15156         struct wiphy *wiphy = wdev->wiphy;
15157         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
15158         const struct ieee80211_mgmt *mgmt = (void *)buf;
15159         u32 cmd;
15160
15161         if (WARN_ON(len < 2))
15162                 return;
15163
15164         if (ieee80211_is_deauth(mgmt->frame_control))
15165                 cmd = NL80211_CMD_UNPROT_DEAUTHENTICATE;
15166         else
15167                 cmd = NL80211_CMD_UNPROT_DISASSOCIATE;
15168
15169         trace_cfg80211_rx_unprot_mlme_mgmt(dev, buf, len);
15170         nl80211_send_mlme_event(rdev, dev, buf, len, cmd, GFP_ATOMIC, -1,
15171                                 NULL, 0);
15172 }
15173 EXPORT_SYMBOL(cfg80211_rx_unprot_mlme_mgmt);
15174
15175 static void nl80211_send_mlme_timeout(struct cfg80211_registered_device *rdev,
15176                                       struct net_device *netdev, int cmd,
15177                                       const u8 *addr, gfp_t gfp)
15178 {
15179         struct sk_buff *msg;
15180         void *hdr;
15181
15182         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
15183         if (!msg)
15184                 return;
15185
15186         hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
15187         if (!hdr) {
15188                 nlmsg_free(msg);
15189                 return;
15190         }
15191
15192         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
15193             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
15194             nla_put_flag(msg, NL80211_ATTR_TIMED_OUT) ||
15195             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr))
15196                 goto nla_put_failure;
15197
15198         genlmsg_end(msg, hdr);
15199
15200         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
15201                                 NL80211_MCGRP_MLME, gfp);
15202         return;
15203
15204  nla_put_failure:
15205         nlmsg_free(msg);
15206 }
15207
15208 void nl80211_send_auth_timeout(struct cfg80211_registered_device *rdev,
15209                                struct net_device *netdev, const u8 *addr,
15210                                gfp_t gfp)
15211 {
15212         nl80211_send_mlme_timeout(rdev, netdev, NL80211_CMD_AUTHENTICATE,
15213                                   addr, gfp);
15214 }
15215
15216 void nl80211_send_assoc_timeout(struct cfg80211_registered_device *rdev,
15217                                 struct net_device *netdev, const u8 *addr,
15218                                 gfp_t gfp)
15219 {
15220         nl80211_send_mlme_timeout(rdev, netdev, NL80211_CMD_ASSOCIATE,
15221                                   addr, gfp);
15222 }
15223
15224 void nl80211_send_connect_result(struct cfg80211_registered_device *rdev,
15225                                  struct net_device *netdev,
15226                                  struct cfg80211_connect_resp_params *cr,
15227                                  gfp_t gfp)
15228 {
15229         struct sk_buff *msg;
15230         void *hdr;
15231
15232         msg = nlmsg_new(100 + cr->req_ie_len + cr->resp_ie_len +
15233                         cr->fils.kek_len + cr->fils.pmk_len +
15234                         (cr->fils.pmkid ? WLAN_PMKID_LEN : 0), gfp);
15235         if (!msg)
15236                 return;
15237
15238         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_CONNECT);
15239         if (!hdr) {
15240                 nlmsg_free(msg);
15241                 return;
15242         }
15243
15244         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
15245             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
15246             (cr->bssid &&
15247              nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, cr->bssid)) ||
15248             nla_put_u16(msg, NL80211_ATTR_STATUS_CODE,
15249                         cr->status < 0 ? WLAN_STATUS_UNSPECIFIED_FAILURE :
15250                         cr->status) ||
15251             (cr->status < 0 &&
15252              (nla_put_flag(msg, NL80211_ATTR_TIMED_OUT) ||
15253               nla_put_u32(msg, NL80211_ATTR_TIMEOUT_REASON,
15254                           cr->timeout_reason))) ||
15255             (cr->req_ie &&
15256              nla_put(msg, NL80211_ATTR_REQ_IE, cr->req_ie_len, cr->req_ie)) ||
15257             (cr->resp_ie &&
15258              nla_put(msg, NL80211_ATTR_RESP_IE, cr->resp_ie_len,
15259                      cr->resp_ie)) ||
15260             (cr->fils.update_erp_next_seq_num &&
15261              nla_put_u16(msg, NL80211_ATTR_FILS_ERP_NEXT_SEQ_NUM,
15262                          cr->fils.erp_next_seq_num)) ||
15263             (cr->status == WLAN_STATUS_SUCCESS &&
15264              ((cr->fils.kek &&
15265                nla_put(msg, NL80211_ATTR_FILS_KEK, cr->fils.kek_len,
15266                        cr->fils.kek)) ||
15267               (cr->fils.pmk &&
15268                nla_put(msg, NL80211_ATTR_PMK, cr->fils.pmk_len, cr->fils.pmk)) ||
15269               (cr->fils.pmkid &&
15270                nla_put(msg, NL80211_ATTR_PMKID, WLAN_PMKID_LEN, cr->fils.pmkid)))))
15271                 goto nla_put_failure;
15272
15273         genlmsg_end(msg, hdr);
15274
15275         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
15276                                 NL80211_MCGRP_MLME, gfp);
15277         return;
15278
15279  nla_put_failure:
15280         nlmsg_free(msg);
15281 }
15282
15283 void nl80211_send_roamed(struct cfg80211_registered_device *rdev,
15284                          struct net_device *netdev,
15285                          struct cfg80211_roam_info *info, gfp_t gfp)
15286 {
15287         struct sk_buff *msg;
15288         void *hdr;
15289         const u8 *bssid = info->bss ? info->bss->bssid : info->bssid;
15290
15291         msg = nlmsg_new(100 + info->req_ie_len + info->resp_ie_len +
15292                         info->fils.kek_len + info->fils.pmk_len +
15293                         (info->fils.pmkid ? WLAN_PMKID_LEN : 0), gfp);
15294         if (!msg)
15295                 return;
15296
15297         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_ROAM);
15298         if (!hdr) {
15299                 nlmsg_free(msg);
15300                 return;
15301         }
15302
15303         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
15304             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
15305             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid) ||
15306             (info->req_ie &&
15307              nla_put(msg, NL80211_ATTR_REQ_IE, info->req_ie_len,
15308                      info->req_ie)) ||
15309             (info->resp_ie &&
15310              nla_put(msg, NL80211_ATTR_RESP_IE, info->resp_ie_len,
15311                      info->resp_ie)) ||
15312             (info->fils.update_erp_next_seq_num &&
15313              nla_put_u16(msg, NL80211_ATTR_FILS_ERP_NEXT_SEQ_NUM,
15314                          info->fils.erp_next_seq_num)) ||
15315             (info->fils.kek &&
15316              nla_put(msg, NL80211_ATTR_FILS_KEK, info->fils.kek_len,
15317                      info->fils.kek)) ||
15318             (info->fils.pmk &&
15319              nla_put(msg, NL80211_ATTR_PMK, info->fils.pmk_len, info->fils.pmk)) ||
15320             (info->fils.pmkid &&
15321              nla_put(msg, NL80211_ATTR_PMKID, WLAN_PMKID_LEN, info->fils.pmkid)))
15322                 goto nla_put_failure;
15323
15324         genlmsg_end(msg, hdr);
15325
15326         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
15327                                 NL80211_MCGRP_MLME, gfp);
15328         return;
15329
15330  nla_put_failure:
15331         nlmsg_free(msg);
15332 }
15333
15334 void nl80211_send_port_authorized(struct cfg80211_registered_device *rdev,
15335                                   struct net_device *netdev, const u8 *bssid)
15336 {
15337         struct sk_buff *msg;
15338         void *hdr;
15339
15340         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
15341         if (!msg)
15342                 return;
15343
15344         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_PORT_AUTHORIZED);
15345         if (!hdr) {
15346                 nlmsg_free(msg);
15347                 return;
15348         }
15349
15350         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
15351             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
15352             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid))
15353                 goto nla_put_failure;
15354
15355         genlmsg_end(msg, hdr);
15356
15357         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
15358                                 NL80211_MCGRP_MLME, GFP_KERNEL);
15359         return;
15360
15361  nla_put_failure:
15362         nlmsg_free(msg);
15363 }
15364
15365 void nl80211_send_disconnected(struct cfg80211_registered_device *rdev,
15366                                struct net_device *netdev, u16 reason,
15367                                const u8 *ie, size_t ie_len, bool from_ap)
15368 {
15369         struct sk_buff *msg;
15370         void *hdr;
15371
15372         msg = nlmsg_new(100 + ie_len, GFP_KERNEL);
15373         if (!msg)
15374                 return;
15375
15376         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_DISCONNECT);
15377         if (!hdr) {
15378                 nlmsg_free(msg);
15379                 return;
15380         }
15381
15382         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
15383             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
15384             (reason &&
15385              nla_put_u16(msg, NL80211_ATTR_REASON_CODE, reason)) ||
15386             (from_ap &&
15387              nla_put_flag(msg, NL80211_ATTR_DISCONNECTED_BY_AP)) ||
15388             (ie && nla_put(msg, NL80211_ATTR_IE, ie_len, ie)))
15389                 goto nla_put_failure;
15390
15391         genlmsg_end(msg, hdr);
15392
15393         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
15394                                 NL80211_MCGRP_MLME, GFP_KERNEL);
15395         return;
15396
15397  nla_put_failure:
15398         nlmsg_free(msg);
15399 }
15400
15401 void nl80211_send_ibss_bssid(struct cfg80211_registered_device *rdev,
15402                              struct net_device *netdev, const u8 *bssid,
15403                              gfp_t gfp)
15404 {
15405         struct sk_buff *msg;
15406         void *hdr;
15407
15408         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
15409         if (!msg)
15410                 return;
15411
15412         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_JOIN_IBSS);
15413         if (!hdr) {
15414                 nlmsg_free(msg);
15415                 return;
15416         }
15417
15418         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
15419             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
15420             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid))
15421                 goto nla_put_failure;
15422
15423         genlmsg_end(msg, hdr);
15424
15425         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
15426                                 NL80211_MCGRP_MLME, gfp);
15427         return;
15428
15429  nla_put_failure:
15430         nlmsg_free(msg);
15431 }
15432
15433 void cfg80211_notify_new_peer_candidate(struct net_device *dev, const u8 *addr,
15434                                         const u8 *ie, u8 ie_len,
15435                                         int sig_dbm, gfp_t gfp)
15436 {
15437         struct wireless_dev *wdev = dev->ieee80211_ptr;
15438         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
15439         struct sk_buff *msg;
15440         void *hdr;
15441
15442         if (WARN_ON(wdev->iftype != NL80211_IFTYPE_MESH_POINT))
15443                 return;
15444
15445         trace_cfg80211_notify_new_peer_candidate(dev, addr);
15446
15447         msg = nlmsg_new(100 + ie_len, gfp);
15448         if (!msg)
15449                 return;
15450
15451         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_NEW_PEER_CANDIDATE);
15452         if (!hdr) {
15453                 nlmsg_free(msg);
15454                 return;
15455         }
15456
15457         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
15458             nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
15459             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr) ||
15460             (ie_len && ie &&
15461              nla_put(msg, NL80211_ATTR_IE, ie_len, ie)) ||
15462             (sig_dbm &&
15463              nla_put_u32(msg, NL80211_ATTR_RX_SIGNAL_DBM, sig_dbm)))
15464                 goto nla_put_failure;
15465
15466         genlmsg_end(msg, hdr);
15467
15468         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
15469                                 NL80211_MCGRP_MLME, gfp);
15470         return;
15471
15472  nla_put_failure:
15473         nlmsg_free(msg);
15474 }
15475 EXPORT_SYMBOL(cfg80211_notify_new_peer_candidate);
15476
15477 void nl80211_michael_mic_failure(struct cfg80211_registered_device *rdev,
15478                                  struct net_device *netdev, const u8 *addr,
15479                                  enum nl80211_key_type key_type, int key_id,
15480                                  const u8 *tsc, gfp_t gfp)
15481 {
15482         struct sk_buff *msg;
15483         void *hdr;
15484
15485         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
15486         if (!msg)
15487                 return;
15488
15489         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_MICHAEL_MIC_FAILURE);
15490         if (!hdr) {
15491                 nlmsg_free(msg);
15492                 return;
15493         }
15494
15495         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
15496             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
15497             (addr && nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr)) ||
15498             nla_put_u32(msg, NL80211_ATTR_KEY_TYPE, key_type) ||
15499             (key_id != -1 &&
15500              nla_put_u8(msg, NL80211_ATTR_KEY_IDX, key_id)) ||
15501             (tsc && nla_put(msg, NL80211_ATTR_KEY_SEQ, 6, tsc)))
15502                 goto nla_put_failure;
15503
15504         genlmsg_end(msg, hdr);
15505
15506         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
15507                                 NL80211_MCGRP_MLME, gfp);
15508         return;
15509
15510  nla_put_failure:
15511         nlmsg_free(msg);
15512 }
15513
15514 void nl80211_send_beacon_hint_event(struct wiphy *wiphy,
15515                                     struct ieee80211_channel *channel_before,
15516                                     struct ieee80211_channel *channel_after)
15517 {
15518         struct sk_buff *msg;
15519         void *hdr;
15520         struct nlattr *nl_freq;
15521
15522         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_ATOMIC);
15523         if (!msg)
15524                 return;
15525
15526         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_REG_BEACON_HINT);
15527         if (!hdr) {
15528                 nlmsg_free(msg);
15529                 return;
15530         }
15531
15532         /*
15533          * Since we are applying the beacon hint to a wiphy we know its
15534          * wiphy_idx is valid
15535          */
15536         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, get_wiphy_idx(wiphy)))
15537                 goto nla_put_failure;
15538
15539         /* Before */
15540         nl_freq = nla_nest_start_noflag(msg, NL80211_ATTR_FREQ_BEFORE);
15541         if (!nl_freq)
15542                 goto nla_put_failure;
15543
15544         if (nl80211_msg_put_channel(msg, wiphy, channel_before, false))
15545                 goto nla_put_failure;
15546         nla_nest_end(msg, nl_freq);
15547
15548         /* After */
15549         nl_freq = nla_nest_start_noflag(msg, NL80211_ATTR_FREQ_AFTER);
15550         if (!nl_freq)
15551                 goto nla_put_failure;
15552
15553         if (nl80211_msg_put_channel(msg, wiphy, channel_after, false))
15554                 goto nla_put_failure;
15555         nla_nest_end(msg, nl_freq);
15556
15557         genlmsg_end(msg, hdr);
15558
15559         rcu_read_lock();
15560         genlmsg_multicast_allns(&nl80211_fam, msg, 0,
15561                                 NL80211_MCGRP_REGULATORY, GFP_ATOMIC);
15562         rcu_read_unlock();
15563
15564         return;
15565
15566 nla_put_failure:
15567         nlmsg_free(msg);
15568 }
15569
15570 static void nl80211_send_remain_on_chan_event(
15571         int cmd, struct cfg80211_registered_device *rdev,
15572         struct wireless_dev *wdev, u64 cookie,
15573         struct ieee80211_channel *chan,
15574         unsigned int duration, gfp_t gfp)
15575 {
15576         struct sk_buff *msg;
15577         void *hdr;
15578
15579         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
15580         if (!msg)
15581                 return;
15582
15583         hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
15584         if (!hdr) {
15585                 nlmsg_free(msg);
15586                 return;
15587         }
15588
15589         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
15590             (wdev->netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
15591                                          wdev->netdev->ifindex)) ||
15592             nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
15593                               NL80211_ATTR_PAD) ||
15594             nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ, chan->center_freq) ||
15595             nla_put_u32(msg, NL80211_ATTR_WIPHY_CHANNEL_TYPE,
15596                         NL80211_CHAN_NO_HT) ||
15597             nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, cookie,
15598                               NL80211_ATTR_PAD))
15599                 goto nla_put_failure;
15600
15601         if (cmd == NL80211_CMD_REMAIN_ON_CHANNEL &&
15602             nla_put_u32(msg, NL80211_ATTR_DURATION, duration))
15603                 goto nla_put_failure;
15604
15605         genlmsg_end(msg, hdr);
15606
15607         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
15608                                 NL80211_MCGRP_MLME, gfp);
15609         return;
15610
15611  nla_put_failure:
15612         nlmsg_free(msg);
15613 }
15614
15615 void cfg80211_ready_on_channel(struct wireless_dev *wdev, u64 cookie,
15616                                struct ieee80211_channel *chan,
15617                                unsigned int duration, gfp_t gfp)
15618 {
15619         struct wiphy *wiphy = wdev->wiphy;
15620         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
15621
15622         trace_cfg80211_ready_on_channel(wdev, cookie, chan, duration);
15623         nl80211_send_remain_on_chan_event(NL80211_CMD_REMAIN_ON_CHANNEL,
15624                                           rdev, wdev, cookie, chan,
15625                                           duration, gfp);
15626 }
15627 EXPORT_SYMBOL(cfg80211_ready_on_channel);
15628
15629 void cfg80211_remain_on_channel_expired(struct wireless_dev *wdev, u64 cookie,
15630                                         struct ieee80211_channel *chan,
15631                                         gfp_t gfp)
15632 {
15633         struct wiphy *wiphy = wdev->wiphy;
15634         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
15635
15636         trace_cfg80211_ready_on_channel_expired(wdev, cookie, chan);
15637         nl80211_send_remain_on_chan_event(NL80211_CMD_CANCEL_REMAIN_ON_CHANNEL,
15638                                           rdev, wdev, cookie, chan, 0, gfp);
15639 }
15640 EXPORT_SYMBOL(cfg80211_remain_on_channel_expired);
15641
15642 void cfg80211_tx_mgmt_expired(struct wireless_dev *wdev, u64 cookie,
15643                                         struct ieee80211_channel *chan,
15644                                         gfp_t gfp)
15645 {
15646         struct wiphy *wiphy = wdev->wiphy;
15647         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
15648
15649         trace_cfg80211_tx_mgmt_expired(wdev, cookie, chan);
15650         nl80211_send_remain_on_chan_event(NL80211_CMD_FRAME_WAIT_CANCEL,
15651                                           rdev, wdev, cookie, chan, 0, gfp);
15652 }
15653 EXPORT_SYMBOL(cfg80211_tx_mgmt_expired);
15654
15655 void cfg80211_new_sta(struct net_device *dev, const u8 *mac_addr,
15656                       struct station_info *sinfo, gfp_t gfp)
15657 {
15658         struct wiphy *wiphy = dev->ieee80211_ptr->wiphy;
15659         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
15660         struct sk_buff *msg;
15661
15662         trace_cfg80211_new_sta(dev, mac_addr, sinfo);
15663
15664         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
15665         if (!msg)
15666                 return;
15667
15668         if (nl80211_send_station(msg, NL80211_CMD_NEW_STATION, 0, 0, 0,
15669                                  rdev, dev, mac_addr, sinfo) < 0) {
15670                 nlmsg_free(msg);
15671                 return;
15672         }
15673
15674         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
15675                                 NL80211_MCGRP_MLME, gfp);
15676 }
15677 EXPORT_SYMBOL(cfg80211_new_sta);
15678
15679 void cfg80211_del_sta_sinfo(struct net_device *dev, const u8 *mac_addr,
15680                             struct station_info *sinfo, gfp_t gfp)
15681 {
15682         struct wiphy *wiphy = dev->ieee80211_ptr->wiphy;
15683         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
15684         struct sk_buff *msg;
15685         struct station_info empty_sinfo = {};
15686
15687         if (!sinfo)
15688                 sinfo = &empty_sinfo;
15689
15690         trace_cfg80211_del_sta(dev, mac_addr);
15691
15692         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
15693         if (!msg) {
15694                 cfg80211_sinfo_release_content(sinfo);
15695                 return;
15696         }
15697
15698         if (nl80211_send_station(msg, NL80211_CMD_DEL_STATION, 0, 0, 0,
15699                                  rdev, dev, mac_addr, sinfo) < 0) {
15700                 nlmsg_free(msg);
15701                 return;
15702         }
15703
15704         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
15705                                 NL80211_MCGRP_MLME, gfp);
15706 }
15707 EXPORT_SYMBOL(cfg80211_del_sta_sinfo);
15708
15709 void cfg80211_conn_failed(struct net_device *dev, const u8 *mac_addr,
15710                           enum nl80211_connect_failed_reason reason,
15711                           gfp_t gfp)
15712 {
15713         struct wiphy *wiphy = dev->ieee80211_ptr->wiphy;
15714         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
15715         struct sk_buff *msg;
15716         void *hdr;
15717
15718         msg = nlmsg_new(NLMSG_GOODSIZE, gfp);
15719         if (!msg)
15720                 return;
15721
15722         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_CONN_FAILED);
15723         if (!hdr) {
15724                 nlmsg_free(msg);
15725                 return;
15726         }
15727
15728         if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
15729             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, mac_addr) ||
15730             nla_put_u32(msg, NL80211_ATTR_CONN_FAILED_REASON, reason))
15731                 goto nla_put_failure;
15732
15733         genlmsg_end(msg, hdr);
15734
15735         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
15736                                 NL80211_MCGRP_MLME, gfp);
15737         return;
15738
15739  nla_put_failure:
15740         nlmsg_free(msg);
15741 }
15742 EXPORT_SYMBOL(cfg80211_conn_failed);
15743
15744 static bool __nl80211_unexpected_frame(struct net_device *dev, u8 cmd,
15745                                        const u8 *addr, gfp_t gfp)
15746 {
15747         struct wireless_dev *wdev = dev->ieee80211_ptr;
15748         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
15749         struct sk_buff *msg;
15750         void *hdr;
15751         u32 nlportid = READ_ONCE(wdev->ap_unexpected_nlportid);
15752
15753         if (!nlportid)
15754                 return false;
15755
15756         msg = nlmsg_new(100, gfp);
15757         if (!msg)
15758                 return true;
15759
15760         hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
15761         if (!hdr) {
15762                 nlmsg_free(msg);
15763                 return true;
15764         }
15765
15766         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
15767             nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
15768             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr))
15769                 goto nla_put_failure;
15770
15771         genlmsg_end(msg, hdr);
15772         genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, nlportid);
15773         return true;
15774
15775  nla_put_failure:
15776         nlmsg_free(msg);
15777         return true;
15778 }
15779
15780 bool cfg80211_rx_spurious_frame(struct net_device *dev,
15781                                 const u8 *addr, gfp_t gfp)
15782 {
15783         struct wireless_dev *wdev = dev->ieee80211_ptr;
15784         bool ret;
15785
15786         trace_cfg80211_rx_spurious_frame(dev, addr);
15787
15788         if (WARN_ON(wdev->iftype != NL80211_IFTYPE_AP &&
15789                     wdev->iftype != NL80211_IFTYPE_P2P_GO)) {
15790                 trace_cfg80211_return_bool(false);
15791                 return false;
15792         }
15793         ret = __nl80211_unexpected_frame(dev, NL80211_CMD_UNEXPECTED_FRAME,
15794                                          addr, gfp);
15795         trace_cfg80211_return_bool(ret);
15796         return ret;
15797 }
15798 EXPORT_SYMBOL(cfg80211_rx_spurious_frame);
15799
15800 bool cfg80211_rx_unexpected_4addr_frame(struct net_device *dev,
15801                                         const u8 *addr, gfp_t gfp)
15802 {
15803         struct wireless_dev *wdev = dev->ieee80211_ptr;
15804         bool ret;
15805
15806         trace_cfg80211_rx_unexpected_4addr_frame(dev, addr);
15807
15808         if (WARN_ON(wdev->iftype != NL80211_IFTYPE_AP &&
15809                     wdev->iftype != NL80211_IFTYPE_P2P_GO &&
15810                     wdev->iftype != NL80211_IFTYPE_AP_VLAN)) {
15811                 trace_cfg80211_return_bool(false);
15812                 return false;
15813         }
15814         ret = __nl80211_unexpected_frame(dev,
15815                                          NL80211_CMD_UNEXPECTED_4ADDR_FRAME,
15816                                          addr, gfp);
15817         trace_cfg80211_return_bool(ret);
15818         return ret;
15819 }
15820 EXPORT_SYMBOL(cfg80211_rx_unexpected_4addr_frame);
15821
15822 int nl80211_send_mgmt(struct cfg80211_registered_device *rdev,
15823                       struct wireless_dev *wdev, u32 nlportid,
15824                       int freq, int sig_dbm,
15825                       const u8 *buf, size_t len, u32 flags, gfp_t gfp)
15826 {
15827         struct net_device *netdev = wdev->netdev;
15828         struct sk_buff *msg;
15829         void *hdr;
15830
15831         msg = nlmsg_new(100 + len, gfp);
15832         if (!msg)
15833                 return -ENOMEM;
15834
15835         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_FRAME);
15836         if (!hdr) {
15837                 nlmsg_free(msg);
15838                 return -ENOMEM;
15839         }
15840
15841         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
15842             (netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
15843                                         netdev->ifindex)) ||
15844             nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
15845                               NL80211_ATTR_PAD) ||
15846             nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ, freq) ||
15847             (sig_dbm &&
15848              nla_put_u32(msg, NL80211_ATTR_RX_SIGNAL_DBM, sig_dbm)) ||
15849             nla_put(msg, NL80211_ATTR_FRAME, len, buf) ||
15850             (flags &&
15851              nla_put_u32(msg, NL80211_ATTR_RXMGMT_FLAGS, flags)))
15852                 goto nla_put_failure;
15853
15854         genlmsg_end(msg, hdr);
15855
15856         return genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, nlportid);
15857
15858  nla_put_failure:
15859         nlmsg_free(msg);
15860         return -ENOBUFS;
15861 }
15862
15863 void cfg80211_mgmt_tx_status(struct wireless_dev *wdev, u64 cookie,
15864                              const u8 *buf, size_t len, bool ack, gfp_t gfp)
15865 {
15866         struct wiphy *wiphy = wdev->wiphy;
15867         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
15868         struct net_device *netdev = wdev->netdev;
15869         struct sk_buff *msg;
15870         void *hdr;
15871
15872         trace_cfg80211_mgmt_tx_status(wdev, cookie, ack);
15873
15874         msg = nlmsg_new(100 + len, gfp);
15875         if (!msg)
15876                 return;
15877
15878         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_FRAME_TX_STATUS);
15879         if (!hdr) {
15880                 nlmsg_free(msg);
15881                 return;
15882         }
15883
15884         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
15885             (netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
15886                                    netdev->ifindex)) ||
15887             nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
15888                               NL80211_ATTR_PAD) ||
15889             nla_put(msg, NL80211_ATTR_FRAME, len, buf) ||
15890             nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, cookie,
15891                               NL80211_ATTR_PAD) ||
15892             (ack && nla_put_flag(msg, NL80211_ATTR_ACK)))
15893                 goto nla_put_failure;
15894
15895         genlmsg_end(msg, hdr);
15896
15897         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
15898                                 NL80211_MCGRP_MLME, gfp);
15899         return;
15900
15901  nla_put_failure:
15902         nlmsg_free(msg);
15903 }
15904 EXPORT_SYMBOL(cfg80211_mgmt_tx_status);
15905
15906 static int __nl80211_rx_control_port(struct net_device *dev,
15907                                      struct sk_buff *skb,
15908                                      bool unencrypted, gfp_t gfp)
15909 {
15910         struct wireless_dev *wdev = dev->ieee80211_ptr;
15911         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
15912         struct ethhdr *ehdr = eth_hdr(skb);
15913         const u8 *addr = ehdr->h_source;
15914         u16 proto = be16_to_cpu(skb->protocol);
15915         struct sk_buff *msg;
15916         void *hdr;
15917         struct nlattr *frame;
15918
15919         u32 nlportid = READ_ONCE(wdev->conn_owner_nlportid);
15920
15921         if (!nlportid)
15922                 return -ENOENT;
15923
15924         msg = nlmsg_new(100 + skb->len, gfp);
15925         if (!msg)
15926                 return -ENOMEM;
15927
15928         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_CONTROL_PORT_FRAME);
15929         if (!hdr) {
15930                 nlmsg_free(msg);
15931                 return -ENOBUFS;
15932         }
15933
15934         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
15935             nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
15936             nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
15937                               NL80211_ATTR_PAD) ||
15938             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr) ||
15939             nla_put_u16(msg, NL80211_ATTR_CONTROL_PORT_ETHERTYPE, proto) ||
15940             (unencrypted && nla_put_flag(msg,
15941                                          NL80211_ATTR_CONTROL_PORT_NO_ENCRYPT)))
15942                 goto nla_put_failure;
15943
15944         frame = nla_reserve(msg, NL80211_ATTR_FRAME, skb->len);
15945         if (!frame)
15946                 goto nla_put_failure;
15947
15948         skb_copy_bits(skb, 0, nla_data(frame), skb->len);
15949         genlmsg_end(msg, hdr);
15950
15951         return genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, nlportid);
15952
15953  nla_put_failure:
15954         nlmsg_free(msg);
15955         return -ENOBUFS;
15956 }
15957
15958 bool cfg80211_rx_control_port(struct net_device *dev,
15959                               struct sk_buff *skb, bool unencrypted)
15960 {
15961         int ret;
15962
15963         trace_cfg80211_rx_control_port(dev, skb, unencrypted);
15964         ret = __nl80211_rx_control_port(dev, skb, unencrypted, GFP_ATOMIC);
15965         trace_cfg80211_return_bool(ret == 0);
15966         return ret == 0;
15967 }
15968 EXPORT_SYMBOL(cfg80211_rx_control_port);
15969
15970 static struct sk_buff *cfg80211_prepare_cqm(struct net_device *dev,
15971                                             const char *mac, gfp_t gfp)
15972 {
15973         struct wireless_dev *wdev = dev->ieee80211_ptr;
15974         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
15975         struct sk_buff *msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
15976         void **cb;
15977
15978         if (!msg)
15979                 return NULL;
15980
15981         cb = (void **)msg->cb;
15982
15983         cb[0] = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_NOTIFY_CQM);
15984         if (!cb[0]) {
15985                 nlmsg_free(msg);
15986                 return NULL;
15987         }
15988
15989         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
15990             nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex))
15991                 goto nla_put_failure;
15992
15993         if (mac && nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, mac))
15994                 goto nla_put_failure;
15995
15996         cb[1] = nla_nest_start_noflag(msg, NL80211_ATTR_CQM);
15997         if (!cb[1])
15998                 goto nla_put_failure;
15999
16000         cb[2] = rdev;
16001
16002         return msg;
16003  nla_put_failure:
16004         nlmsg_free(msg);
16005         return NULL;
16006 }
16007
16008 static void cfg80211_send_cqm(struct sk_buff *msg, gfp_t gfp)
16009 {
16010         void **cb = (void **)msg->cb;
16011         struct cfg80211_registered_device *rdev = cb[2];
16012
16013         nla_nest_end(msg, cb[1]);
16014         genlmsg_end(msg, cb[0]);
16015
16016         memset(msg->cb, 0, sizeof(msg->cb));
16017
16018         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
16019                                 NL80211_MCGRP_MLME, gfp);
16020 }
16021
16022 void cfg80211_cqm_rssi_notify(struct net_device *dev,
16023                               enum nl80211_cqm_rssi_threshold_event rssi_event,
16024                               s32 rssi_level, gfp_t gfp)
16025 {
16026         struct sk_buff *msg;
16027         struct wireless_dev *wdev = dev->ieee80211_ptr;
16028         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
16029
16030         trace_cfg80211_cqm_rssi_notify(dev, rssi_event, rssi_level);
16031
16032         if (WARN_ON(rssi_event != NL80211_CQM_RSSI_THRESHOLD_EVENT_LOW &&
16033                     rssi_event != NL80211_CQM_RSSI_THRESHOLD_EVENT_HIGH))
16034                 return;
16035
16036         if (wdev->cqm_config) {
16037                 wdev->cqm_config->last_rssi_event_value = rssi_level;
16038
16039                 cfg80211_cqm_rssi_update(rdev, dev);
16040
16041                 if (rssi_level == 0)
16042                         rssi_level = wdev->cqm_config->last_rssi_event_value;
16043         }
16044
16045         msg = cfg80211_prepare_cqm(dev, NULL, gfp);
16046         if (!msg)
16047                 return;
16048
16049         if (nla_put_u32(msg, NL80211_ATTR_CQM_RSSI_THRESHOLD_EVENT,
16050                         rssi_event))
16051                 goto nla_put_failure;
16052
16053         if (rssi_level && nla_put_s32(msg, NL80211_ATTR_CQM_RSSI_LEVEL,
16054                                       rssi_level))
16055                 goto nla_put_failure;
16056
16057         cfg80211_send_cqm(msg, gfp);
16058
16059         return;
16060
16061  nla_put_failure:
16062         nlmsg_free(msg);
16063 }
16064 EXPORT_SYMBOL(cfg80211_cqm_rssi_notify);
16065
16066 void cfg80211_cqm_txe_notify(struct net_device *dev,
16067                              const u8 *peer, u32 num_packets,
16068                              u32 rate, u32 intvl, gfp_t gfp)
16069 {
16070         struct sk_buff *msg;
16071
16072         msg = cfg80211_prepare_cqm(dev, peer, gfp);
16073         if (!msg)
16074                 return;
16075
16076         if (nla_put_u32(msg, NL80211_ATTR_CQM_TXE_PKTS, num_packets))
16077                 goto nla_put_failure;
16078
16079         if (nla_put_u32(msg, NL80211_ATTR_CQM_TXE_RATE, rate))
16080                 goto nla_put_failure;
16081
16082         if (nla_put_u32(msg, NL80211_ATTR_CQM_TXE_INTVL, intvl))
16083                 goto nla_put_failure;
16084
16085         cfg80211_send_cqm(msg, gfp);
16086         return;
16087
16088  nla_put_failure:
16089         nlmsg_free(msg);
16090 }
16091 EXPORT_SYMBOL(cfg80211_cqm_txe_notify);
16092
16093 void cfg80211_cqm_pktloss_notify(struct net_device *dev,
16094                                  const u8 *peer, u32 num_packets, gfp_t gfp)
16095 {
16096         struct sk_buff *msg;
16097
16098         trace_cfg80211_cqm_pktloss_notify(dev, peer, num_packets);
16099
16100         msg = cfg80211_prepare_cqm(dev, peer, gfp);
16101         if (!msg)
16102                 return;
16103
16104         if (nla_put_u32(msg, NL80211_ATTR_CQM_PKT_LOSS_EVENT, num_packets))
16105                 goto nla_put_failure;
16106
16107         cfg80211_send_cqm(msg, gfp);
16108         return;
16109
16110  nla_put_failure:
16111         nlmsg_free(msg);
16112 }
16113 EXPORT_SYMBOL(cfg80211_cqm_pktloss_notify);
16114
16115 void cfg80211_cqm_beacon_loss_notify(struct net_device *dev, gfp_t gfp)
16116 {
16117         struct sk_buff *msg;
16118
16119         msg = cfg80211_prepare_cqm(dev, NULL, gfp);
16120         if (!msg)
16121                 return;
16122
16123         if (nla_put_flag(msg, NL80211_ATTR_CQM_BEACON_LOSS_EVENT))
16124                 goto nla_put_failure;
16125
16126         cfg80211_send_cqm(msg, gfp);
16127         return;
16128
16129  nla_put_failure:
16130         nlmsg_free(msg);
16131 }
16132 EXPORT_SYMBOL(cfg80211_cqm_beacon_loss_notify);
16133
16134 static void nl80211_gtk_rekey_notify(struct cfg80211_registered_device *rdev,
16135                                      struct net_device *netdev, const u8 *bssid,
16136                                      const u8 *replay_ctr, gfp_t gfp)
16137 {
16138         struct sk_buff *msg;
16139         struct nlattr *rekey_attr;
16140         void *hdr;
16141
16142         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
16143         if (!msg)
16144                 return;
16145
16146         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_SET_REKEY_OFFLOAD);
16147         if (!hdr) {
16148                 nlmsg_free(msg);
16149                 return;
16150         }
16151
16152         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
16153             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
16154             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid))
16155                 goto nla_put_failure;
16156
16157         rekey_attr = nla_nest_start_noflag(msg, NL80211_ATTR_REKEY_DATA);
16158         if (!rekey_attr)
16159                 goto nla_put_failure;
16160
16161         if (nla_put(msg, NL80211_REKEY_DATA_REPLAY_CTR,
16162                     NL80211_REPLAY_CTR_LEN, replay_ctr))
16163                 goto nla_put_failure;
16164
16165         nla_nest_end(msg, rekey_attr);
16166
16167         genlmsg_end(msg, hdr);
16168
16169         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
16170                                 NL80211_MCGRP_MLME, gfp);
16171         return;
16172
16173  nla_put_failure:
16174         nlmsg_free(msg);
16175 }
16176
16177 void cfg80211_gtk_rekey_notify(struct net_device *dev, const u8 *bssid,
16178                                const u8 *replay_ctr, gfp_t gfp)
16179 {
16180         struct wireless_dev *wdev = dev->ieee80211_ptr;
16181         struct wiphy *wiphy = wdev->wiphy;
16182         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
16183
16184         trace_cfg80211_gtk_rekey_notify(dev, bssid);
16185         nl80211_gtk_rekey_notify(rdev, dev, bssid, replay_ctr, gfp);
16186 }
16187 EXPORT_SYMBOL(cfg80211_gtk_rekey_notify);
16188
16189 static void
16190 nl80211_pmksa_candidate_notify(struct cfg80211_registered_device *rdev,
16191                                struct net_device *netdev, int index,
16192                                const u8 *bssid, bool preauth, gfp_t gfp)
16193 {
16194         struct sk_buff *msg;
16195         struct nlattr *attr;
16196         void *hdr;
16197
16198         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
16199         if (!msg)
16200                 return;
16201
16202         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_PMKSA_CANDIDATE);
16203         if (!hdr) {
16204                 nlmsg_free(msg);
16205                 return;
16206         }
16207
16208         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
16209             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex))
16210                 goto nla_put_failure;
16211
16212         attr = nla_nest_start_noflag(msg, NL80211_ATTR_PMKSA_CANDIDATE);
16213         if (!attr)
16214                 goto nla_put_failure;
16215
16216         if (nla_put_u32(msg, NL80211_PMKSA_CANDIDATE_INDEX, index) ||
16217             nla_put(msg, NL80211_PMKSA_CANDIDATE_BSSID, ETH_ALEN, bssid) ||
16218             (preauth &&
16219              nla_put_flag(msg, NL80211_PMKSA_CANDIDATE_PREAUTH)))
16220                 goto nla_put_failure;
16221
16222         nla_nest_end(msg, attr);
16223
16224         genlmsg_end(msg, hdr);
16225
16226         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
16227                                 NL80211_MCGRP_MLME, gfp);
16228         return;
16229
16230  nla_put_failure:
16231         nlmsg_free(msg);
16232 }
16233
16234 void cfg80211_pmksa_candidate_notify(struct net_device *dev, int index,
16235                                      const u8 *bssid, bool preauth, gfp_t gfp)
16236 {
16237         struct wireless_dev *wdev = dev->ieee80211_ptr;
16238         struct wiphy *wiphy = wdev->wiphy;
16239         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
16240
16241         trace_cfg80211_pmksa_candidate_notify(dev, index, bssid, preauth);
16242         nl80211_pmksa_candidate_notify(rdev, dev, index, bssid, preauth, gfp);
16243 }
16244 EXPORT_SYMBOL(cfg80211_pmksa_candidate_notify);
16245
16246 static void nl80211_ch_switch_notify(struct cfg80211_registered_device *rdev,
16247                                      struct net_device *netdev,
16248                                      struct cfg80211_chan_def *chandef,
16249                                      gfp_t gfp,
16250                                      enum nl80211_commands notif,
16251                                      u8 count)
16252 {
16253         struct sk_buff *msg;
16254         void *hdr;
16255
16256         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
16257         if (!msg)
16258                 return;
16259
16260         hdr = nl80211hdr_put(msg, 0, 0, 0, notif);
16261         if (!hdr) {
16262                 nlmsg_free(msg);
16263                 return;
16264         }
16265
16266         if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex))
16267                 goto nla_put_failure;
16268
16269         if (nl80211_send_chandef(msg, chandef))
16270                 goto nla_put_failure;
16271
16272         if ((notif == NL80211_CMD_CH_SWITCH_STARTED_NOTIFY) &&
16273             (nla_put_u32(msg, NL80211_ATTR_CH_SWITCH_COUNT, count)))
16274                         goto nla_put_failure;
16275
16276         genlmsg_end(msg, hdr);
16277
16278         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
16279                                 NL80211_MCGRP_MLME, gfp);
16280         return;
16281
16282  nla_put_failure:
16283         nlmsg_free(msg);
16284 }
16285
16286 void cfg80211_ch_switch_notify(struct net_device *dev,
16287                                struct cfg80211_chan_def *chandef)
16288 {
16289         struct wireless_dev *wdev = dev->ieee80211_ptr;
16290         struct wiphy *wiphy = wdev->wiphy;
16291         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
16292
16293         ASSERT_WDEV_LOCK(wdev);
16294
16295         trace_cfg80211_ch_switch_notify(dev, chandef);
16296
16297         wdev->chandef = *chandef;
16298         wdev->preset_chandef = *chandef;
16299
16300         if (wdev->iftype == NL80211_IFTYPE_STATION &&
16301             !WARN_ON(!wdev->current_bss))
16302                 cfg80211_update_assoc_bss_entry(wdev, chandef->chan);
16303
16304         cfg80211_sched_dfs_chan_update(rdev);
16305
16306         nl80211_ch_switch_notify(rdev, dev, chandef, GFP_KERNEL,
16307                                  NL80211_CMD_CH_SWITCH_NOTIFY, 0);
16308 }
16309 EXPORT_SYMBOL(cfg80211_ch_switch_notify);
16310
16311 void cfg80211_ch_switch_started_notify(struct net_device *dev,
16312                                        struct cfg80211_chan_def *chandef,
16313                                        u8 count)
16314 {
16315         struct wireless_dev *wdev = dev->ieee80211_ptr;
16316         struct wiphy *wiphy = wdev->wiphy;
16317         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
16318
16319         trace_cfg80211_ch_switch_started_notify(dev, chandef);
16320
16321         nl80211_ch_switch_notify(rdev, dev, chandef, GFP_KERNEL,
16322                                  NL80211_CMD_CH_SWITCH_STARTED_NOTIFY, count);
16323 }
16324 EXPORT_SYMBOL(cfg80211_ch_switch_started_notify);
16325
16326 void
16327 nl80211_radar_notify(struct cfg80211_registered_device *rdev,
16328                      const struct cfg80211_chan_def *chandef,
16329                      enum nl80211_radar_event event,
16330                      struct net_device *netdev, gfp_t gfp)
16331 {
16332         struct sk_buff *msg;
16333         void *hdr;
16334
16335         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
16336         if (!msg)
16337                 return;
16338
16339         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_RADAR_DETECT);
16340         if (!hdr) {
16341                 nlmsg_free(msg);
16342                 return;
16343         }
16344
16345         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx))
16346                 goto nla_put_failure;
16347
16348         /* NOP and radar events don't need a netdev parameter */
16349         if (netdev) {
16350                 struct wireless_dev *wdev = netdev->ieee80211_ptr;
16351
16352                 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
16353                     nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
16354                                       NL80211_ATTR_PAD))
16355                         goto nla_put_failure;
16356         }
16357
16358         if (nla_put_u32(msg, NL80211_ATTR_RADAR_EVENT, event))
16359                 goto nla_put_failure;
16360
16361         if (nl80211_send_chandef(msg, chandef))
16362                 goto nla_put_failure;
16363
16364         genlmsg_end(msg, hdr);
16365
16366         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
16367                                 NL80211_MCGRP_MLME, gfp);
16368         return;
16369
16370  nla_put_failure:
16371         nlmsg_free(msg);
16372 }
16373
16374 void cfg80211_sta_opmode_change_notify(struct net_device *dev, const u8 *mac,
16375                                        struct sta_opmode_info *sta_opmode,
16376                                        gfp_t gfp)
16377 {
16378         struct sk_buff *msg;
16379         struct wireless_dev *wdev = dev->ieee80211_ptr;
16380         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
16381         void *hdr;
16382
16383         if (WARN_ON(!mac))
16384                 return;
16385
16386         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
16387         if (!msg)
16388                 return;
16389
16390         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_STA_OPMODE_CHANGED);
16391         if (!hdr) {
16392                 nlmsg_free(msg);
16393                 return;
16394         }
16395
16396         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx))
16397                 goto nla_put_failure;
16398
16399         if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex))
16400                 goto nla_put_failure;
16401
16402         if (nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, mac))
16403                 goto nla_put_failure;
16404
16405         if ((sta_opmode->changed & STA_OPMODE_SMPS_MODE_CHANGED) &&
16406             nla_put_u8(msg, NL80211_ATTR_SMPS_MODE, sta_opmode->smps_mode))
16407                 goto nla_put_failure;
16408
16409         if ((sta_opmode->changed & STA_OPMODE_MAX_BW_CHANGED) &&
16410             nla_put_u8(msg, NL80211_ATTR_CHANNEL_WIDTH, sta_opmode->bw))
16411                 goto nla_put_failure;
16412
16413         if ((sta_opmode->changed & STA_OPMODE_N_SS_CHANGED) &&
16414             nla_put_u8(msg, NL80211_ATTR_NSS, sta_opmode->rx_nss))
16415                 goto nla_put_failure;
16416
16417         genlmsg_end(msg, hdr);
16418
16419         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
16420                                 NL80211_MCGRP_MLME, gfp);
16421
16422         return;
16423
16424 nla_put_failure:
16425         nlmsg_free(msg);
16426 }
16427 EXPORT_SYMBOL(cfg80211_sta_opmode_change_notify);
16428
16429 void cfg80211_probe_status(struct net_device *dev, const u8 *addr,
16430                            u64 cookie, bool acked, s32 ack_signal,
16431                            bool is_valid_ack_signal, gfp_t gfp)
16432 {
16433         struct wireless_dev *wdev = dev->ieee80211_ptr;
16434         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
16435         struct sk_buff *msg;
16436         void *hdr;
16437
16438         trace_cfg80211_probe_status(dev, addr, cookie, acked);
16439
16440         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
16441
16442         if (!msg)
16443                 return;
16444
16445         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_PROBE_CLIENT);
16446         if (!hdr) {
16447                 nlmsg_free(msg);
16448                 return;
16449         }
16450
16451         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
16452             nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
16453             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr) ||
16454             nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, cookie,
16455                               NL80211_ATTR_PAD) ||
16456             (acked && nla_put_flag(msg, NL80211_ATTR_ACK)) ||
16457             (is_valid_ack_signal && nla_put_s32(msg, NL80211_ATTR_ACK_SIGNAL,
16458                                                 ack_signal)))
16459                 goto nla_put_failure;
16460
16461         genlmsg_end(msg, hdr);
16462
16463         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
16464                                 NL80211_MCGRP_MLME, gfp);
16465         return;
16466
16467  nla_put_failure:
16468         nlmsg_free(msg);
16469 }
16470 EXPORT_SYMBOL(cfg80211_probe_status);
16471
16472 void cfg80211_report_obss_beacon(struct wiphy *wiphy,
16473                                  const u8 *frame, size_t len,
16474                                  int freq, int sig_dbm)
16475 {
16476         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
16477         struct sk_buff *msg;
16478         void *hdr;
16479         struct cfg80211_beacon_registration *reg;
16480
16481         trace_cfg80211_report_obss_beacon(wiphy, frame, len, freq, sig_dbm);
16482
16483         spin_lock_bh(&rdev->beacon_registrations_lock);
16484         list_for_each_entry(reg, &rdev->beacon_registrations, list) {
16485                 msg = nlmsg_new(len + 100, GFP_ATOMIC);
16486                 if (!msg) {
16487                         spin_unlock_bh(&rdev->beacon_registrations_lock);
16488                         return;
16489                 }
16490
16491                 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_FRAME);
16492                 if (!hdr)
16493                         goto nla_put_failure;
16494
16495                 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
16496                     (freq &&
16497                      nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ, freq)) ||
16498                     (sig_dbm &&
16499                      nla_put_u32(msg, NL80211_ATTR_RX_SIGNAL_DBM, sig_dbm)) ||
16500                     nla_put(msg, NL80211_ATTR_FRAME, len, frame))
16501                         goto nla_put_failure;
16502
16503                 genlmsg_end(msg, hdr);
16504
16505                 genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, reg->nlportid);
16506         }
16507         spin_unlock_bh(&rdev->beacon_registrations_lock);
16508         return;
16509
16510  nla_put_failure:
16511         spin_unlock_bh(&rdev->beacon_registrations_lock);
16512         nlmsg_free(msg);
16513 }
16514 EXPORT_SYMBOL(cfg80211_report_obss_beacon);
16515
16516 #ifdef CONFIG_PM
16517 static int cfg80211_net_detect_results(struct sk_buff *msg,
16518                                        struct cfg80211_wowlan_wakeup *wakeup)
16519 {
16520         struct cfg80211_wowlan_nd_info *nd = wakeup->net_detect;
16521         struct nlattr *nl_results, *nl_match, *nl_freqs;
16522         int i, j;
16523
16524         nl_results = nla_nest_start_noflag(msg,
16525                                            NL80211_WOWLAN_TRIG_NET_DETECT_RESULTS);
16526         if (!nl_results)
16527                 return -EMSGSIZE;
16528
16529         for (i = 0; i < nd->n_matches; i++) {
16530                 struct cfg80211_wowlan_nd_match *match = nd->matches[i];
16531
16532                 nl_match = nla_nest_start_noflag(msg, i);
16533                 if (!nl_match)
16534                         break;
16535
16536                 /* The SSID attribute is optional in nl80211, but for
16537                  * simplicity reasons it's always present in the
16538                  * cfg80211 structure.  If a driver can't pass the
16539                  * SSID, that needs to be changed.  A zero length SSID
16540                  * is still a valid SSID (wildcard), so it cannot be
16541                  * used for this purpose.
16542                  */
16543                 if (nla_put(msg, NL80211_ATTR_SSID, match->ssid.ssid_len,
16544                             match->ssid.ssid)) {
16545                         nla_nest_cancel(msg, nl_match);
16546                         goto out;
16547                 }
16548
16549                 if (match->n_channels) {
16550                         nl_freqs = nla_nest_start_noflag(msg,
16551                                                          NL80211_ATTR_SCAN_FREQUENCIES);
16552                         if (!nl_freqs) {
16553                                 nla_nest_cancel(msg, nl_match);
16554                                 goto out;
16555                         }
16556
16557                         for (j = 0; j < match->n_channels; j++) {
16558                                 if (nla_put_u32(msg, j, match->channels[j])) {
16559                                         nla_nest_cancel(msg, nl_freqs);
16560                                         nla_nest_cancel(msg, nl_match);
16561                                         goto out;
16562                                 }
16563                         }
16564
16565                         nla_nest_end(msg, nl_freqs);
16566                 }
16567
16568                 nla_nest_end(msg, nl_match);
16569         }
16570
16571 out:
16572         nla_nest_end(msg, nl_results);
16573         return 0;
16574 }
16575
16576 void cfg80211_report_wowlan_wakeup(struct wireless_dev *wdev,
16577                                    struct cfg80211_wowlan_wakeup *wakeup,
16578                                    gfp_t gfp)
16579 {
16580         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
16581         struct sk_buff *msg;
16582         void *hdr;
16583         int size = 200;
16584
16585         trace_cfg80211_report_wowlan_wakeup(wdev->wiphy, wdev, wakeup);
16586
16587         if (wakeup)
16588                 size += wakeup->packet_present_len;
16589
16590         msg = nlmsg_new(size, gfp);
16591         if (!msg)
16592                 return;
16593
16594         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_SET_WOWLAN);
16595         if (!hdr)
16596                 goto free_msg;
16597
16598         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
16599             nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
16600                               NL80211_ATTR_PAD))
16601                 goto free_msg;
16602
16603         if (wdev->netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
16604                                         wdev->netdev->ifindex))
16605                 goto free_msg;
16606
16607         if (wakeup) {
16608                 struct nlattr *reasons;
16609
16610                 reasons = nla_nest_start_noflag(msg,
16611                                                 NL80211_ATTR_WOWLAN_TRIGGERS);
16612                 if (!reasons)
16613                         goto free_msg;
16614
16615                 if (wakeup->disconnect &&
16616                     nla_put_flag(msg, NL80211_WOWLAN_TRIG_DISCONNECT))
16617                         goto free_msg;
16618                 if (wakeup->magic_pkt &&
16619                     nla_put_flag(msg, NL80211_WOWLAN_TRIG_MAGIC_PKT))
16620                         goto free_msg;
16621                 if (wakeup->gtk_rekey_failure &&
16622                     nla_put_flag(msg, NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE))
16623                         goto free_msg;
16624                 if (wakeup->eap_identity_req &&
16625                     nla_put_flag(msg, NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST))
16626                         goto free_msg;
16627                 if (wakeup->four_way_handshake &&
16628                     nla_put_flag(msg, NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE))
16629                         goto free_msg;
16630                 if (wakeup->rfkill_release &&
16631                     nla_put_flag(msg, NL80211_WOWLAN_TRIG_RFKILL_RELEASE))
16632                         goto free_msg;
16633
16634                 if (wakeup->pattern_idx >= 0 &&
16635                     nla_put_u32(msg, NL80211_WOWLAN_TRIG_PKT_PATTERN,
16636                                 wakeup->pattern_idx))
16637                         goto free_msg;
16638
16639                 if (wakeup->tcp_match &&
16640                     nla_put_flag(msg, NL80211_WOWLAN_TRIG_WAKEUP_TCP_MATCH))
16641                         goto free_msg;
16642
16643                 if (wakeup->tcp_connlost &&
16644                     nla_put_flag(msg, NL80211_WOWLAN_TRIG_WAKEUP_TCP_CONNLOST))
16645                         goto free_msg;
16646
16647                 if (wakeup->tcp_nomoretokens &&
16648                     nla_put_flag(msg,
16649                                  NL80211_WOWLAN_TRIG_WAKEUP_TCP_NOMORETOKENS))
16650                         goto free_msg;
16651
16652                 if (wakeup->packet) {
16653                         u32 pkt_attr = NL80211_WOWLAN_TRIG_WAKEUP_PKT_80211;
16654                         u32 len_attr = NL80211_WOWLAN_TRIG_WAKEUP_PKT_80211_LEN;
16655
16656                         if (!wakeup->packet_80211) {
16657                                 pkt_attr =
16658                                         NL80211_WOWLAN_TRIG_WAKEUP_PKT_8023;
16659                                 len_attr =
16660                                         NL80211_WOWLAN_TRIG_WAKEUP_PKT_8023_LEN;
16661                         }
16662
16663                         if (wakeup->packet_len &&
16664                             nla_put_u32(msg, len_attr, wakeup->packet_len))
16665                                 goto free_msg;
16666
16667                         if (nla_put(msg, pkt_attr, wakeup->packet_present_len,
16668                                     wakeup->packet))
16669                                 goto free_msg;
16670                 }
16671
16672                 if (wakeup->net_detect &&
16673                     cfg80211_net_detect_results(msg, wakeup))
16674                                 goto free_msg;
16675
16676                 nla_nest_end(msg, reasons);
16677         }
16678
16679         genlmsg_end(msg, hdr);
16680
16681         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
16682                                 NL80211_MCGRP_MLME, gfp);
16683         return;
16684
16685  free_msg:
16686         nlmsg_free(msg);
16687 }
16688 EXPORT_SYMBOL(cfg80211_report_wowlan_wakeup);
16689 #endif
16690
16691 void cfg80211_tdls_oper_request(struct net_device *dev, const u8 *peer,
16692                                 enum nl80211_tdls_operation oper,
16693                                 u16 reason_code, gfp_t gfp)
16694 {
16695         struct wireless_dev *wdev = dev->ieee80211_ptr;
16696         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
16697         struct sk_buff *msg;
16698         void *hdr;
16699
16700         trace_cfg80211_tdls_oper_request(wdev->wiphy, dev, peer, oper,
16701                                          reason_code);
16702
16703         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
16704         if (!msg)
16705                 return;
16706
16707         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_TDLS_OPER);
16708         if (!hdr) {
16709                 nlmsg_free(msg);
16710                 return;
16711         }
16712
16713         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
16714             nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
16715             nla_put_u8(msg, NL80211_ATTR_TDLS_OPERATION, oper) ||
16716             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, peer) ||
16717             (reason_code > 0 &&
16718              nla_put_u16(msg, NL80211_ATTR_REASON_CODE, reason_code)))
16719                 goto nla_put_failure;
16720
16721         genlmsg_end(msg, hdr);
16722
16723         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
16724                                 NL80211_MCGRP_MLME, gfp);
16725         return;
16726
16727  nla_put_failure:
16728         nlmsg_free(msg);
16729 }
16730 EXPORT_SYMBOL(cfg80211_tdls_oper_request);
16731
16732 static int nl80211_netlink_notify(struct notifier_block * nb,
16733                                   unsigned long state,
16734                                   void *_notify)
16735 {
16736         struct netlink_notify *notify = _notify;
16737         struct cfg80211_registered_device *rdev;
16738         struct wireless_dev *wdev;
16739         struct cfg80211_beacon_registration *reg, *tmp;
16740
16741         if (state != NETLINK_URELEASE || notify->protocol != NETLINK_GENERIC)
16742                 return NOTIFY_DONE;
16743
16744         rcu_read_lock();
16745
16746         list_for_each_entry_rcu(rdev, &cfg80211_rdev_list, list) {
16747                 struct cfg80211_sched_scan_request *sched_scan_req;
16748
16749                 list_for_each_entry_rcu(sched_scan_req,
16750                                         &rdev->sched_scan_req_list,
16751                                         list) {
16752                         if (sched_scan_req->owner_nlportid == notify->portid) {
16753                                 sched_scan_req->nl_owner_dead = true;
16754                                 schedule_work(&rdev->sched_scan_stop_wk);
16755                         }
16756                 }
16757
16758                 list_for_each_entry_rcu(wdev, &rdev->wiphy.wdev_list, list) {
16759                         cfg80211_mlme_unregister_socket(wdev, notify->portid);
16760
16761                         if (wdev->owner_nlportid == notify->portid) {
16762                                 wdev->nl_owner_dead = true;
16763                                 schedule_work(&rdev->destroy_work);
16764                         } else if (wdev->conn_owner_nlportid == notify->portid) {
16765                                 schedule_work(&wdev->disconnect_wk);
16766                         }
16767
16768                         cfg80211_release_pmsr(wdev, notify->portid);
16769                 }
16770
16771                 spin_lock_bh(&rdev->beacon_registrations_lock);
16772                 list_for_each_entry_safe(reg, tmp, &rdev->beacon_registrations,
16773                                          list) {
16774                         if (reg->nlportid == notify->portid) {
16775                                 list_del(&reg->list);
16776                                 kfree(reg);
16777                                 break;
16778                         }
16779                 }
16780                 spin_unlock_bh(&rdev->beacon_registrations_lock);
16781         }
16782
16783         rcu_read_unlock();
16784
16785         /*
16786          * It is possible that the user space process that is controlling the
16787          * indoor setting disappeared, so notify the regulatory core.
16788          */
16789         regulatory_netlink_notify(notify->portid);
16790         return NOTIFY_OK;
16791 }
16792
16793 static struct notifier_block nl80211_netlink_notifier = {
16794         .notifier_call = nl80211_netlink_notify,
16795 };
16796
16797 void cfg80211_ft_event(struct net_device *netdev,
16798                        struct cfg80211_ft_event_params *ft_event)
16799 {
16800         struct wiphy *wiphy = netdev->ieee80211_ptr->wiphy;
16801         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
16802         struct sk_buff *msg;
16803         void *hdr;
16804
16805         trace_cfg80211_ft_event(wiphy, netdev, ft_event);
16806
16807         if (!ft_event->target_ap)
16808                 return;
16809
16810         msg = nlmsg_new(100 + ft_event->ies_len + ft_event->ric_ies_len,
16811                         GFP_KERNEL);
16812         if (!msg)
16813                 return;
16814
16815         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_FT_EVENT);
16816         if (!hdr)
16817                 goto out;
16818
16819         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
16820             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
16821             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, ft_event->target_ap))
16822                 goto out;
16823
16824         if (ft_event->ies &&
16825             nla_put(msg, NL80211_ATTR_IE, ft_event->ies_len, ft_event->ies))
16826                 goto out;
16827         if (ft_event->ric_ies &&
16828             nla_put(msg, NL80211_ATTR_IE_RIC, ft_event->ric_ies_len,
16829                     ft_event->ric_ies))
16830                 goto out;
16831
16832         genlmsg_end(msg, hdr);
16833
16834         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
16835                                 NL80211_MCGRP_MLME, GFP_KERNEL);
16836         return;
16837  out:
16838         nlmsg_free(msg);
16839 }
16840 EXPORT_SYMBOL(cfg80211_ft_event);
16841
16842 void cfg80211_crit_proto_stopped(struct wireless_dev *wdev, gfp_t gfp)
16843 {
16844         struct cfg80211_registered_device *rdev;
16845         struct sk_buff *msg;
16846         void *hdr;
16847         u32 nlportid;
16848
16849         rdev = wiphy_to_rdev(wdev->wiphy);
16850         if (!rdev->crit_proto_nlportid)
16851                 return;
16852
16853         nlportid = rdev->crit_proto_nlportid;
16854         rdev->crit_proto_nlportid = 0;
16855
16856         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
16857         if (!msg)
16858                 return;
16859
16860         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_CRIT_PROTOCOL_STOP);
16861         if (!hdr)
16862                 goto nla_put_failure;
16863
16864         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
16865             nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
16866                               NL80211_ATTR_PAD))
16867                 goto nla_put_failure;
16868
16869         genlmsg_end(msg, hdr);
16870
16871         genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, nlportid);
16872         return;
16873
16874  nla_put_failure:
16875         nlmsg_free(msg);
16876 }
16877 EXPORT_SYMBOL(cfg80211_crit_proto_stopped);
16878
16879 void nl80211_send_ap_stopped(struct wireless_dev *wdev)
16880 {
16881         struct wiphy *wiphy = wdev->wiphy;
16882         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
16883         struct sk_buff *msg;
16884         void *hdr;
16885
16886         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
16887         if (!msg)
16888                 return;
16889
16890         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_STOP_AP);
16891         if (!hdr)
16892                 goto out;
16893
16894         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
16895             nla_put_u32(msg, NL80211_ATTR_IFINDEX, wdev->netdev->ifindex) ||
16896             nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
16897                               NL80211_ATTR_PAD))
16898                 goto out;
16899
16900         genlmsg_end(msg, hdr);
16901
16902         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(wiphy), msg, 0,
16903                                 NL80211_MCGRP_MLME, GFP_KERNEL);
16904         return;
16905  out:
16906         nlmsg_free(msg);
16907 }
16908
16909 int cfg80211_external_auth_request(struct net_device *dev,
16910                                    struct cfg80211_external_auth_params *params,
16911                                    gfp_t gfp)
16912 {
16913         struct wireless_dev *wdev = dev->ieee80211_ptr;
16914         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
16915         struct sk_buff *msg;
16916         void *hdr;
16917
16918         if (!wdev->conn_owner_nlportid)
16919                 return -EINVAL;
16920
16921         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
16922         if (!msg)
16923                 return -ENOMEM;
16924
16925         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_EXTERNAL_AUTH);
16926         if (!hdr)
16927                 goto nla_put_failure;
16928
16929         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
16930             nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
16931             nla_put_u32(msg, NL80211_ATTR_AKM_SUITES, params->key_mgmt_suite) ||
16932             nla_put_u32(msg, NL80211_ATTR_EXTERNAL_AUTH_ACTION,
16933                         params->action) ||
16934             nla_put(msg, NL80211_ATTR_BSSID, ETH_ALEN, params->bssid) ||
16935             nla_put(msg, NL80211_ATTR_SSID, params->ssid.ssid_len,
16936                     params->ssid.ssid))
16937                 goto nla_put_failure;
16938
16939         genlmsg_end(msg, hdr);
16940         genlmsg_unicast(wiphy_net(&rdev->wiphy), msg,
16941                         wdev->conn_owner_nlportid);
16942         return 0;
16943
16944  nla_put_failure:
16945         nlmsg_free(msg);
16946         return -ENOBUFS;
16947 }
16948 EXPORT_SYMBOL(cfg80211_external_auth_request);
16949
16950 void cfg80211_update_owe_info_event(struct net_device *netdev,
16951                                     struct cfg80211_update_owe_info *owe_info,
16952                                     gfp_t gfp)
16953 {
16954         struct wiphy *wiphy = netdev->ieee80211_ptr->wiphy;
16955         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
16956         struct sk_buff *msg;
16957         void *hdr;
16958
16959         trace_cfg80211_update_owe_info_event(wiphy, netdev, owe_info);
16960
16961         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
16962         if (!msg)
16963                 return;
16964
16965         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_UPDATE_OWE_INFO);
16966         if (!hdr)
16967                 goto nla_put_failure;
16968
16969         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
16970             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
16971             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, owe_info->peer))
16972                 goto nla_put_failure;
16973
16974         if (!owe_info->ie_len ||
16975             nla_put(msg, NL80211_ATTR_IE, owe_info->ie_len, owe_info->ie))
16976                 goto nla_put_failure;
16977
16978         genlmsg_end(msg, hdr);
16979
16980         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
16981                                 NL80211_MCGRP_MLME, gfp);
16982         return;
16983
16984 nla_put_failure:
16985         genlmsg_cancel(msg, hdr);
16986         nlmsg_free(msg);
16987 }
16988 EXPORT_SYMBOL(cfg80211_update_owe_info_event);
16989
16990 /* initialisation/exit functions */
16991
16992 int __init nl80211_init(void)
16993 {
16994         int err;
16995
16996         err = genl_register_family(&nl80211_fam);
16997         if (err)
16998                 return err;
16999
17000         err = netlink_register_notifier(&nl80211_netlink_notifier);
17001         if (err)
17002                 goto err_out;
17003
17004         return 0;
17005  err_out:
17006         genl_unregister_family(&nl80211_fam);
17007         return err;
17008 }
17009
17010 void nl80211_exit(void)
17011 {
17012         netlink_unregister_notifier(&nl80211_netlink_notifier);
17013         genl_unregister_family(&nl80211_fam);
17014 }