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_ie_attr(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
 211         for_each_element(elem, data, len) {
 212                 /* nothing */
 213         }
 214
 215         if (for_each_element_completed(elem, data, len))
 216                 return 0;
 217
 218         NL_SET_ERR_MSG_ATTR(extack, attr, "malformed information elements");
 219         return -EINVAL;
 220 }
 221
 222 /* policy for the attributes */
 223 static const struct nla_policy
 224 nl80211_ftm_responder_policy[NL80211_FTM_RESP_ATTR_MAX + 1] = {
 225         [NL80211_FTM_RESP_ATTR_ENABLED] = { .type = NLA_FLAG, },
 226         [NL80211_FTM_RESP_ATTR_LCI] = { .type = NLA_BINARY,
 227                                         .len = U8_MAX },
 228         [NL80211_FTM_RESP_ATTR_CIVICLOC] = { .type = NLA_BINARY,
 229                                              .len = U8_MAX },
 230 };
 231
 232 static const struct nla_policy
 233 nl80211_pmsr_ftm_req_attr_policy[NL80211_PMSR_FTM_REQ_ATTR_MAX + 1] = {
 234         [NL80211_PMSR_FTM_REQ_ATTR_ASAP] = { .type = NLA_FLAG },
 235         [NL80211_PMSR_FTM_REQ_ATTR_PREAMBLE] = { .type = NLA_U32 },
 236         [NL80211_PMSR_FTM_REQ_ATTR_NUM_BURSTS_EXP] =
 237                 NLA_POLICY_MAX(NLA_U8, 15),
 238         [NL80211_PMSR_FTM_REQ_ATTR_BURST_PERIOD] = { .type = NLA_U16 },
 239         [NL80211_PMSR_FTM_REQ_ATTR_BURST_DURATION] =
 240                 NLA_POLICY_MAX(NLA_U8, 15),
 241         [NL80211_PMSR_FTM_REQ_ATTR_FTMS_PER_BURST] =
 242                 NLA_POLICY_MAX(NLA_U8, 31),
 243         [NL80211_PMSR_FTM_REQ_ATTR_NUM_FTMR_RETRIES] = { .type = NLA_U8 },
 244         [NL80211_PMSR_FTM_REQ_ATTR_REQUEST_LCI] = { .type = NLA_FLAG },
 245         [NL80211_PMSR_FTM_REQ_ATTR_REQUEST_CIVICLOC] = { .type = NLA_FLAG },
 246 };
 247
 248 static const struct nla_policy
 249 nl80211_pmsr_req_data_policy[NL80211_PMSR_TYPE_MAX + 1] = {
 250         [NL80211_PMSR_TYPE_FTM] =
 251                 NLA_POLICY_NESTED(nl80211_pmsr_ftm_req_attr_policy),
 252 };
 253
 254 static const struct nla_policy
 255 nl80211_pmsr_req_attr_policy[NL80211_PMSR_REQ_ATTR_MAX + 1] = {
 256         [NL80211_PMSR_REQ_ATTR_DATA] =
 257                 NLA_POLICY_NESTED(nl80211_pmsr_req_data_policy),
 258         [NL80211_PMSR_REQ_ATTR_GET_AP_TSF] = { .type = NLA_FLAG },
 259 };
 260
 261 static const struct nla_policy
 262 nl80211_psmr_peer_attr_policy[NL80211_PMSR_PEER_ATTR_MAX + 1] = {
 263         [NL80211_PMSR_PEER_ATTR_ADDR] = NLA_POLICY_ETH_ADDR,
 264         /*
 265          * we could specify this again to be the top-level policy,
 266          * but that would open us up to recursion problems ...
 267          */
 268         [NL80211_PMSR_PEER_ATTR_CHAN] = { .type = NLA_NESTED },
 269         [NL80211_PMSR_PEER_ATTR_REQ] =
 270                 NLA_POLICY_NESTED(nl80211_pmsr_req_attr_policy),
 271         [NL80211_PMSR_PEER_ATTR_RESP] = { .type = NLA_REJECT },
 272 };
 273
 274 static const struct nla_policy
 275 nl80211_pmsr_attr_policy[NL80211_PMSR_ATTR_MAX + 1] = {
 276         [NL80211_PMSR_ATTR_MAX_PEERS] = { .type = NLA_REJECT },
 277         [NL80211_PMSR_ATTR_REPORT_AP_TSF] = { .type = NLA_REJECT },
 278         [NL80211_PMSR_ATTR_RANDOMIZE_MAC_ADDR] = { .type = NLA_REJECT },
 279         [NL80211_PMSR_ATTR_TYPE_CAPA] = { .type = NLA_REJECT },
 280         [NL80211_PMSR_ATTR_PEERS] =
 281                 NLA_POLICY_NESTED_ARRAY(nl80211_psmr_peer_attr_policy),
 282 };
 283
 284 static const struct nla_policy
 285 he_obss_pd_policy[NL80211_HE_OBSS_PD_ATTR_MAX + 1] = {
 286         [NL80211_HE_OBSS_PD_ATTR_MIN_OFFSET] =
 287                 NLA_POLICY_RANGE(NLA_U8, 1, 20),
 288         [NL80211_HE_OBSS_PD_ATTR_MAX_OFFSET] =
 289                 NLA_POLICY_RANGE(NLA_U8, 1, 20),
 290 };
 291
 292 const struct nla_policy nl80211_policy[NUM_NL80211_ATTR] = {
 293         [0] = { .strict_start_type = NL80211_ATTR_HE_OBSS_PD },
 294         [NL80211_ATTR_WIPHY] = { .type = NLA_U32 },
 295         [NL80211_ATTR_WIPHY_NAME] = { .type = NLA_NUL_STRING,
 296                                       .len = 20-1 },
 297         [NL80211_ATTR_WIPHY_TXQ_PARAMS] = { .type = NLA_NESTED },
 298
 299         [NL80211_ATTR_WIPHY_FREQ] = { .type = NLA_U32 },
 300         [NL80211_ATTR_WIPHY_CHANNEL_TYPE] = { .type = NLA_U32 },
 301         [NL80211_ATTR_CHANNEL_WIDTH] = { .type = NLA_U32 },
 302         [NL80211_ATTR_CENTER_FREQ1] = { .type = NLA_U32 },
 303         [NL80211_ATTR_CENTER_FREQ2] = { .type = NLA_U32 },
 304
 305         [NL80211_ATTR_WIPHY_RETRY_SHORT] = NLA_POLICY_MIN(NLA_U8, 1),
 306         [NL80211_ATTR_WIPHY_RETRY_LONG] = NLA_POLICY_MIN(NLA_U8, 1),
 307         [NL80211_ATTR_WIPHY_FRAG_THRESHOLD] = { .type = NLA_U32 },
 308         [NL80211_ATTR_WIPHY_RTS_THRESHOLD] = { .type = NLA_U32 },
 309         [NL80211_ATTR_WIPHY_COVERAGE_CLASS] = { .type = NLA_U8 },
 310         [NL80211_ATTR_WIPHY_DYN_ACK] = { .type = NLA_FLAG },
 311
 312         [NL80211_ATTR_IFTYPE] = NLA_POLICY_MAX(NLA_U32, NL80211_IFTYPE_MAX),
 313         [NL80211_ATTR_IFINDEX] = { .type = NLA_U32 },
 314         [NL80211_ATTR_IFNAME] = { .type = NLA_NUL_STRING, .len = IFNAMSIZ-1 },
 315
 316         [NL80211_ATTR_MAC] = { .type = NLA_EXACT_LEN_WARN, .len = ETH_ALEN },
 317         [NL80211_ATTR_PREV_BSSID] = {
 318                 .type = NLA_EXACT_LEN_WARN,
 319                 .len = ETH_ALEN
 320         },
 321
 322         [NL80211_ATTR_KEY] = { .type = NLA_NESTED, },
 323         [NL80211_ATTR_KEY_DATA] = { .type = NLA_BINARY,
 324                                     .len = WLAN_MAX_KEY_LEN },
 325         [NL80211_ATTR_KEY_IDX] = NLA_POLICY_MAX(NLA_U8, 5),
 326         [NL80211_ATTR_KEY_CIPHER] = { .type = NLA_U32 },
 327         [NL80211_ATTR_KEY_DEFAULT] = { .type = NLA_FLAG },
 328         [NL80211_ATTR_KEY_SEQ] = { .type = NLA_BINARY, .len = 16 },
 329         [NL80211_ATTR_KEY_TYPE] =
 330                 NLA_POLICY_MAX(NLA_U32, NUM_NL80211_KEYTYPES),
 331
 332         [NL80211_ATTR_BEACON_INTERVAL] = { .type = NLA_U32 },
 333         [NL80211_ATTR_DTIM_PERIOD] = { .type = NLA_U32 },
 334         [NL80211_ATTR_BEACON_HEAD] = { .type = NLA_BINARY,
 335                                        .len = IEEE80211_MAX_DATA_LEN },
 336         [NL80211_ATTR_BEACON_TAIL] =
 337                 NLA_POLICY_VALIDATE_FN(NLA_BINARY, validate_ie_attr,
 338                                        IEEE80211_MAX_DATA_LEN),
 339         [NL80211_ATTR_STA_AID] =
 340                 NLA_POLICY_RANGE(NLA_U16, 1, IEEE80211_MAX_AID),
 341         [NL80211_ATTR_STA_FLAGS] = { .type = NLA_NESTED },
 342         [NL80211_ATTR_STA_LISTEN_INTERVAL] = { .type = NLA_U16 },
 343         [NL80211_ATTR_STA_SUPPORTED_RATES] = { .type = NLA_BINARY,
 344                                                .len = NL80211_MAX_SUPP_RATES },
 345         [NL80211_ATTR_STA_PLINK_ACTION] =
 346                 NLA_POLICY_MAX(NLA_U8, NUM_NL80211_PLINK_ACTIONS - 1),
 347         [NL80211_ATTR_STA_TX_POWER_SETTING] =
 348                 NLA_POLICY_RANGE(NLA_U8,
 349                                  NL80211_TX_POWER_AUTOMATIC,
 350                                  NL80211_TX_POWER_FIXED),
 351         [NL80211_ATTR_STA_TX_POWER] = { .type = NLA_S16 },
 352         [NL80211_ATTR_STA_VLAN] = { .type = NLA_U32 },
 353         [NL80211_ATTR_MNTR_FLAGS] = { /* NLA_NESTED can't be empty */ },
 354         [NL80211_ATTR_MESH_ID] = { .type = NLA_BINARY,
 355                                    .len = IEEE80211_MAX_MESH_ID_LEN },
 356         [NL80211_ATTR_MPATH_NEXT_HOP] = { .type = NLA_U32 },
 357
 358         [NL80211_ATTR_REG_ALPHA2] = { .type = NLA_STRING, .len = 2 },
 359         [NL80211_ATTR_REG_RULES] = { .type = NLA_NESTED },
 360
 361         [NL80211_ATTR_BSS_CTS_PROT] = { .type = NLA_U8 },
 362         [NL80211_ATTR_BSS_SHORT_PREAMBLE] = { .type = NLA_U8 },
 363         [NL80211_ATTR_BSS_SHORT_SLOT_TIME] = { .type = NLA_U8 },
 364         [NL80211_ATTR_BSS_BASIC_RATES] = { .type = NLA_BINARY,
 365                                            .len = NL80211_MAX_SUPP_RATES },
 366         [NL80211_ATTR_BSS_HT_OPMODE] = { .type = NLA_U16 },
 367
 368         [NL80211_ATTR_MESH_CONFIG] = { .type = NLA_NESTED },
 369         [NL80211_ATTR_SUPPORT_MESH_AUTH] = { .type = NLA_FLAG },
 370
 371         [NL80211_ATTR_HT_CAPABILITY] = {
 372                 .type = NLA_EXACT_LEN_WARN,
 373                 .len = NL80211_HT_CAPABILITY_LEN
 374         },
 375
 376         [NL80211_ATTR_MGMT_SUBTYPE] = { .type = NLA_U8 },
 377         [NL80211_ATTR_IE] = NLA_POLICY_VALIDATE_FN(NLA_BINARY,
 378                                                    validate_ie_attr,
 379                                                    IEEE80211_MAX_DATA_LEN),
 380         [NL80211_ATTR_SCAN_FREQUENCIES] = { .type = NLA_NESTED },
 381         [NL80211_ATTR_SCAN_SSIDS] = { .type = NLA_NESTED },
 382
 383         [NL80211_ATTR_SSID] = { .type = NLA_BINARY,
 384                                 .len = IEEE80211_MAX_SSID_LEN },
 385         [NL80211_ATTR_AUTH_TYPE] = { .type = NLA_U32 },
 386         [NL80211_ATTR_REASON_CODE] = { .type = NLA_U16 },
 387         [NL80211_ATTR_FREQ_FIXED] = { .type = NLA_FLAG },
 388         [NL80211_ATTR_TIMED_OUT] = { .type = NLA_FLAG },
 389         [NL80211_ATTR_USE_MFP] = NLA_POLICY_RANGE(NLA_U32,
 390                                                   NL80211_MFP_NO,
 391                                                   NL80211_MFP_OPTIONAL),
 392         [NL80211_ATTR_STA_FLAGS2] = {
 393                 .len = sizeof(struct nl80211_sta_flag_update),
 394         },
 395         [NL80211_ATTR_CONTROL_PORT] = { .type = NLA_FLAG },
 396         [NL80211_ATTR_CONTROL_PORT_ETHERTYPE] = { .type = NLA_U16 },
 397         [NL80211_ATTR_CONTROL_PORT_NO_ENCRYPT] = { .type = NLA_FLAG },
 398         [NL80211_ATTR_CONTROL_PORT_OVER_NL80211] = { .type = NLA_FLAG },
 399         [NL80211_ATTR_PRIVACY] = { .type = NLA_FLAG },
 400         [NL80211_ATTR_CIPHER_SUITE_GROUP] = { .type = NLA_U32 },
 401         [NL80211_ATTR_WPA_VERSIONS] = { .type = NLA_U32 },
 402         [NL80211_ATTR_PID] = { .type = NLA_U32 },
 403         [NL80211_ATTR_4ADDR] = { .type = NLA_U8 },
 404         [NL80211_ATTR_PMKID] = {
 405                 .type = NLA_EXACT_LEN_WARN,
 406                 .len = WLAN_PMKID_LEN
 407         },
 408         [NL80211_ATTR_DURATION] = { .type = NLA_U32 },
 409         [NL80211_ATTR_COOKIE] = { .type = NLA_U64 },
 410         [NL80211_ATTR_TX_RATES] = { .type = NLA_NESTED },
 411         [NL80211_ATTR_FRAME] = { .type = NLA_BINARY,
 412                                  .len = IEEE80211_MAX_DATA_LEN },
 413         [NL80211_ATTR_FRAME_MATCH] = { .type = NLA_BINARY, },
 414         [NL80211_ATTR_PS_STATE] = NLA_POLICY_RANGE(NLA_U32,
 415                                                    NL80211_PS_DISABLED,
 416                                                    NL80211_PS_ENABLED),
 417         [NL80211_ATTR_CQM] = { .type = NLA_NESTED, },
 418         [NL80211_ATTR_LOCAL_STATE_CHANGE] = { .type = NLA_FLAG },
 419         [NL80211_ATTR_AP_ISOLATE] = { .type = NLA_U8 },
 420         [NL80211_ATTR_WIPHY_TX_POWER_SETTING] = { .type = NLA_U32 },
 421         [NL80211_ATTR_WIPHY_TX_POWER_LEVEL] = { .type = NLA_U32 },
 422         [NL80211_ATTR_FRAME_TYPE] = { .type = NLA_U16 },
 423         [NL80211_ATTR_WIPHY_ANTENNA_TX] = { .type = NLA_U32 },
 424         [NL80211_ATTR_WIPHY_ANTENNA_RX] = { .type = NLA_U32 },
 425         [NL80211_ATTR_MCAST_RATE] = { .type = NLA_U32 },
 426         [NL80211_ATTR_OFFCHANNEL_TX_OK] = { .type = NLA_FLAG },
 427         [NL80211_ATTR_KEY_DEFAULT_TYPES] = { .type = NLA_NESTED },
 428         [NL80211_ATTR_WOWLAN_TRIGGERS] = { .type = NLA_NESTED },
 429         [NL80211_ATTR_STA_PLINK_STATE] =
 430                 NLA_POLICY_MAX(NLA_U8, NUM_NL80211_PLINK_STATES - 1),
 431         [NL80211_ATTR_MESH_PEER_AID] =
 432                 NLA_POLICY_RANGE(NLA_U16, 1, IEEE80211_MAX_AID),
 433         [NL80211_ATTR_SCHED_SCAN_INTERVAL] = { .type = NLA_U32 },
 434         [NL80211_ATTR_REKEY_DATA] = { .type = NLA_NESTED },
 435         [NL80211_ATTR_SCAN_SUPP_RATES] = { .type = NLA_NESTED },
 436         [NL80211_ATTR_HIDDEN_SSID] =
 437                 NLA_POLICY_RANGE(NLA_U32,
 438                                  NL80211_HIDDEN_SSID_NOT_IN_USE,
 439                                  NL80211_HIDDEN_SSID_ZERO_CONTENTS),
 440         [NL80211_ATTR_IE_PROBE_RESP] =
 441                 NLA_POLICY_VALIDATE_FN(NLA_BINARY, validate_ie_attr,
 442                                        IEEE80211_MAX_DATA_LEN),
 443         [NL80211_ATTR_IE_ASSOC_RESP] =
 444                 NLA_POLICY_VALIDATE_FN(NLA_BINARY, validate_ie_attr,
 445                                        IEEE80211_MAX_DATA_LEN),
 446         [NL80211_ATTR_ROAM_SUPPORT] = { .type = NLA_FLAG },
 447         [NL80211_ATTR_SCHED_SCAN_MATCH] = { .type = NLA_NESTED },
 448         [NL80211_ATTR_TX_NO_CCK_RATE] = { .type = NLA_FLAG },
 449         [NL80211_ATTR_TDLS_ACTION] = { .type = NLA_U8 },
 450         [NL80211_ATTR_TDLS_DIALOG_TOKEN] = { .type = NLA_U8 },
 451         [NL80211_ATTR_TDLS_OPERATION] = { .type = NLA_U8 },
 452         [NL80211_ATTR_TDLS_SUPPORT] = { .type = NLA_FLAG },
 453         [NL80211_ATTR_TDLS_EXTERNAL_SETUP] = { .type = NLA_FLAG },
 454         [NL80211_ATTR_TDLS_INITIATOR] = { .type = NLA_FLAG },
 455         [NL80211_ATTR_DONT_WAIT_FOR_ACK] = { .type = NLA_FLAG },
 456         [NL80211_ATTR_PROBE_RESP] = { .type = NLA_BINARY,
 457                                       .len = IEEE80211_MAX_DATA_LEN },
 458         [NL80211_ATTR_DFS_REGION] = { .type = NLA_U8 },
 459         [NL80211_ATTR_DISABLE_HT] = { .type = NLA_FLAG },
 460         [NL80211_ATTR_HT_CAPABILITY_MASK] = {
 461                 .len = NL80211_HT_CAPABILITY_LEN
 462         },
 463         [NL80211_ATTR_NOACK_MAP] = { .type = NLA_U16 },
 464         [NL80211_ATTR_INACTIVITY_TIMEOUT] = { .type = NLA_U16 },
 465         [NL80211_ATTR_BG_SCAN_PERIOD] = { .type = NLA_U16 },
 466         [NL80211_ATTR_WDEV] = { .type = NLA_U64 },
 467         [NL80211_ATTR_USER_REG_HINT_TYPE] = { .type = NLA_U32 },
 468         [NL80211_ATTR_AUTH_DATA] = { .type = NLA_BINARY, },
 469         [NL80211_ATTR_VHT_CAPABILITY] = {
 470                 .type = NLA_EXACT_LEN_WARN,
 471                 .len = NL80211_VHT_CAPABILITY_LEN
 472         },
 473         [NL80211_ATTR_SCAN_FLAGS] = { .type = NLA_U32 },
 474         [NL80211_ATTR_P2P_CTWINDOW] = NLA_POLICY_MAX(NLA_U8, 127),
 475         [NL80211_ATTR_P2P_OPPPS] = NLA_POLICY_MAX(NLA_U8, 1),
 476         [NL80211_ATTR_LOCAL_MESH_POWER_MODE] =
 477                 NLA_POLICY_RANGE(NLA_U32,
 478                                  NL80211_MESH_POWER_UNKNOWN + 1,
 479                                  NL80211_MESH_POWER_MAX),
 480         [NL80211_ATTR_ACL_POLICY] = {. type = NLA_U32 },
 481         [NL80211_ATTR_MAC_ADDRS] = { .type = NLA_NESTED },
 482         [NL80211_ATTR_STA_CAPABILITY] = { .type = NLA_U16 },
 483         [NL80211_ATTR_STA_EXT_CAPABILITY] = { .type = NLA_BINARY, },
 484         [NL80211_ATTR_SPLIT_WIPHY_DUMP] = { .type = NLA_FLAG, },
 485         [NL80211_ATTR_DISABLE_VHT] = { .type = NLA_FLAG },
 486         [NL80211_ATTR_VHT_CAPABILITY_MASK] = {
 487                 .len = NL80211_VHT_CAPABILITY_LEN,
 488         },
 489         [NL80211_ATTR_MDID] = { .type = NLA_U16 },
 490         [NL80211_ATTR_IE_RIC] = { .type = NLA_BINARY,
 491                                   .len = IEEE80211_MAX_DATA_LEN },
 492         [NL80211_ATTR_PEER_AID] =
 493                 NLA_POLICY_RANGE(NLA_U16, 1, IEEE80211_MAX_AID),
 494         [NL80211_ATTR_CH_SWITCH_COUNT] = { .type = NLA_U32 },
 495         [NL80211_ATTR_CH_SWITCH_BLOCK_TX] = { .type = NLA_FLAG },
 496         [NL80211_ATTR_CSA_IES] = { .type = NLA_NESTED },
 497         [NL80211_ATTR_CSA_C_OFF_BEACON] = { .type = NLA_BINARY },
 498         [NL80211_ATTR_CSA_C_OFF_PRESP] = { .type = NLA_BINARY },
 499         [NL80211_ATTR_STA_SUPPORTED_CHANNELS] = { .type = NLA_BINARY },
 500         [NL80211_ATTR_STA_SUPPORTED_OPER_CLASSES] = { .type = NLA_BINARY },
 501         [NL80211_ATTR_HANDLE_DFS] = { .type = NLA_FLAG },
 502         [NL80211_ATTR_OPMODE_NOTIF] = { .type = NLA_U8 },
 503         [NL80211_ATTR_VENDOR_ID] = { .type = NLA_U32 },
 504         [NL80211_ATTR_VENDOR_SUBCMD] = { .type = NLA_U32 },
 505         [NL80211_ATTR_VENDOR_DATA] = { .type = NLA_BINARY },
 506         [NL80211_ATTR_QOS_MAP] = { .type = NLA_BINARY,
 507                                    .len = IEEE80211_QOS_MAP_LEN_MAX },
 508         [NL80211_ATTR_MAC_HINT] = {
 509                 .type = NLA_EXACT_LEN_WARN,
 510                 .len = ETH_ALEN
 511         },
 512         [NL80211_ATTR_WIPHY_FREQ_HINT] = { .type = NLA_U32 },
 513         [NL80211_ATTR_TDLS_PEER_CAPABILITY] = { .type = NLA_U32 },
 514         [NL80211_ATTR_SOCKET_OWNER] = { .type = NLA_FLAG },
 515         [NL80211_ATTR_CSA_C_OFFSETS_TX] = { .type = NLA_BINARY },
 516         [NL80211_ATTR_USE_RRM] = { .type = NLA_FLAG },
 517         [NL80211_ATTR_TSID] = NLA_POLICY_MAX(NLA_U8, IEEE80211_NUM_TIDS - 1),
 518         [NL80211_ATTR_USER_PRIO] =
 519                 NLA_POLICY_MAX(NLA_U8, IEEE80211_NUM_UPS - 1),
 520         [NL80211_ATTR_ADMITTED_TIME] = { .type = NLA_U16 },
 521         [NL80211_ATTR_SMPS_MODE] = { .type = NLA_U8 },
 522         [NL80211_ATTR_MAC_MASK] = {
 523                 .type = NLA_EXACT_LEN_WARN,
 524                 .len = ETH_ALEN
 525         },
 526         [NL80211_ATTR_WIPHY_SELF_MANAGED_REG] = { .type = NLA_FLAG },
 527         [NL80211_ATTR_NETNS_FD] = { .type = NLA_U32 },
 528         [NL80211_ATTR_SCHED_SCAN_DELAY] = { .type = NLA_U32 },
 529         [NL80211_ATTR_REG_INDOOR] = { .type = NLA_FLAG },
 530         [NL80211_ATTR_PBSS] = { .type = NLA_FLAG },
 531         [NL80211_ATTR_BSS_SELECT] = { .type = NLA_NESTED },
 532         [NL80211_ATTR_STA_SUPPORT_P2P_PS] =
 533                 NLA_POLICY_MAX(NLA_U8, NUM_NL80211_P2P_PS_STATUS - 1),
 534         [NL80211_ATTR_MU_MIMO_GROUP_DATA] = {
 535                 .len = VHT_MUMIMO_GROUPS_DATA_LEN
 536         },
 537         [NL80211_ATTR_MU_MIMO_FOLLOW_MAC_ADDR] = {
 538                 .type = NLA_EXACT_LEN_WARN,
 539                 .len = ETH_ALEN
 540         },
 541         [NL80211_ATTR_NAN_MASTER_PREF] = NLA_POLICY_MIN(NLA_U8, 1),
 542         [NL80211_ATTR_BANDS] = { .type = NLA_U32 },
 543         [NL80211_ATTR_NAN_FUNC] = { .type = NLA_NESTED },
 544         [NL80211_ATTR_FILS_KEK] = { .type = NLA_BINARY,
 545                                     .len = FILS_MAX_KEK_LEN },
 546         [NL80211_ATTR_FILS_NONCES] = {
 547                 .type = NLA_EXACT_LEN_WARN,
 548                 .len = 2 * FILS_NONCE_LEN
 549         },
 550         [NL80211_ATTR_MULTICAST_TO_UNICAST_ENABLED] = { .type = NLA_FLAG, },
 551         [NL80211_ATTR_BSSID] = { .type = NLA_EXACT_LEN_WARN, .len = ETH_ALEN },
 552         [NL80211_ATTR_SCHED_SCAN_RELATIVE_RSSI] = { .type = NLA_S8 },
 553         [NL80211_ATTR_SCHED_SCAN_RSSI_ADJUST] = {
 554                 .len = sizeof(struct nl80211_bss_select_rssi_adjust)
 555         },
 556         [NL80211_ATTR_TIMEOUT_REASON] = { .type = NLA_U32 },
 557         [NL80211_ATTR_FILS_ERP_USERNAME] = { .type = NLA_BINARY,
 558                                              .len = FILS_ERP_MAX_USERNAME_LEN },
 559         [NL80211_ATTR_FILS_ERP_REALM] = { .type = NLA_BINARY,
 560                                           .len = FILS_ERP_MAX_REALM_LEN },
 561         [NL80211_ATTR_FILS_ERP_NEXT_SEQ_NUM] = { .type = NLA_U16 },
 562         [NL80211_ATTR_FILS_ERP_RRK] = { .type = NLA_BINARY,
 563                                         .len = FILS_ERP_MAX_RRK_LEN },
 564         [NL80211_ATTR_FILS_CACHE_ID] = { .type = NLA_EXACT_LEN_WARN, .len = 2 },
 565         [NL80211_ATTR_PMK] = { .type = NLA_BINARY, .len = PMK_MAX_LEN },
 566         [NL80211_ATTR_SCHED_SCAN_MULTI] = { .type = NLA_FLAG },
 567         [NL80211_ATTR_EXTERNAL_AUTH_SUPPORT] = { .type = NLA_FLAG },
 568
 569         [NL80211_ATTR_TXQ_LIMIT] = { .type = NLA_U32 },
 570         [NL80211_ATTR_TXQ_MEMORY_LIMIT] = { .type = NLA_U32 },
 571         [NL80211_ATTR_TXQ_QUANTUM] = { .type = NLA_U32 },
 572         [NL80211_ATTR_HE_CAPABILITY] = { .type = NLA_BINARY,
 573                                          .len = NL80211_HE_MAX_CAPABILITY_LEN },
 574
 575         [NL80211_ATTR_FTM_RESPONDER] = {
 576                 .type = NLA_NESTED,
 577                 .validation_data = nl80211_ftm_responder_policy,
 578         },
 579         [NL80211_ATTR_TIMEOUT] = NLA_POLICY_MIN(NLA_U32, 1),
 580         [NL80211_ATTR_PEER_MEASUREMENTS] =
 581                 NLA_POLICY_NESTED(nl80211_pmsr_attr_policy),
 582         [NL80211_ATTR_AIRTIME_WEIGHT] = NLA_POLICY_MIN(NLA_U16, 1),
 583         [NL80211_ATTR_SAE_PASSWORD] = { .type = NLA_BINARY,
 584                                         .len = SAE_PASSWORD_MAX_LEN },
 585         [NL80211_ATTR_TWT_RESPONDER] = { .type = NLA_FLAG },
 586         [NL80211_ATTR_HE_OBSS_PD] = NLA_POLICY_NESTED(he_obss_pd_policy),
 587 };
 588
 589 /* policy for the key attributes */
 590 static const struct nla_policy nl80211_key_policy[NL80211_KEY_MAX + 1] = {
 591         [NL80211_KEY_DATA] = { .type = NLA_BINARY, .len = WLAN_MAX_KEY_LEN },
 592         [NL80211_KEY_IDX] = { .type = NLA_U8 },
 593         [NL80211_KEY_CIPHER] = { .type = NLA_U32 },
 594         [NL80211_KEY_SEQ] = { .type = NLA_BINARY, .len = 16 },
 595         [NL80211_KEY_DEFAULT] = { .type = NLA_FLAG },
 596         [NL80211_KEY_DEFAULT_MGMT] = { .type = NLA_FLAG },
 597         [NL80211_KEY_TYPE] = NLA_POLICY_MAX(NLA_U32, NUM_NL80211_KEYTYPES - 1),
 598         [NL80211_KEY_DEFAULT_TYPES] = { .type = NLA_NESTED },
 599         [NL80211_KEY_MODE] = NLA_POLICY_RANGE(NLA_U8, 0, NL80211_KEY_SET_TX),
 600 };
 601
 602 /* policy for the key default flags */
 603 static const struct nla_policy
 604 nl80211_key_default_policy[NUM_NL80211_KEY_DEFAULT_TYPES] = {
 605         [NL80211_KEY_DEFAULT_TYPE_UNICAST] = { .type = NLA_FLAG },
 606         [NL80211_KEY_DEFAULT_TYPE_MULTICAST] = { .type = NLA_FLAG },
 607 };
 608
 609 #ifdef CONFIG_PM
 610 /* policy for WoWLAN attributes */
 611 static const struct nla_policy
 612 nl80211_wowlan_policy[NUM_NL80211_WOWLAN_TRIG] = {
 613         [NL80211_WOWLAN_TRIG_ANY] = { .type = NLA_FLAG },
 614         [NL80211_WOWLAN_TRIG_DISCONNECT] = { .type = NLA_FLAG },
 615         [NL80211_WOWLAN_TRIG_MAGIC_PKT] = { .type = NLA_FLAG },
 616         [NL80211_WOWLAN_TRIG_PKT_PATTERN] = { .type = NLA_NESTED },
 617         [NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE] = { .type = NLA_FLAG },
 618         [NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST] = { .type = NLA_FLAG },
 619         [NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE] = { .type = NLA_FLAG },
 620         [NL80211_WOWLAN_TRIG_RFKILL_RELEASE] = { .type = NLA_FLAG },
 621         [NL80211_WOWLAN_TRIG_TCP_CONNECTION] = { .type = NLA_NESTED },
 622         [NL80211_WOWLAN_TRIG_NET_DETECT] = { .type = NLA_NESTED },
 623 };
 624
 625 static const struct nla_policy
 626 nl80211_wowlan_tcp_policy[NUM_NL80211_WOWLAN_TCP] = {
 627         [NL80211_WOWLAN_TCP_SRC_IPV4] = { .type = NLA_U32 },
 628         [NL80211_WOWLAN_TCP_DST_IPV4] = { .type = NLA_U32 },
 629         [NL80211_WOWLAN_TCP_DST_MAC] = {
 630                 .type = NLA_EXACT_LEN_WARN,
 631                 .len = ETH_ALEN
 632         },
 633         [NL80211_WOWLAN_TCP_SRC_PORT] = { .type = NLA_U16 },
 634         [NL80211_WOWLAN_TCP_DST_PORT] = { .type = NLA_U16 },
 635         [NL80211_WOWLAN_TCP_DATA_PAYLOAD] = { .type = NLA_MIN_LEN, .len = 1 },
 636         [NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ] = {
 637                 .len = sizeof(struct nl80211_wowlan_tcp_data_seq)
 638         },
 639         [NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN] = {
 640                 .len = sizeof(struct nl80211_wowlan_tcp_data_token)
 641         },
 642         [NL80211_WOWLAN_TCP_DATA_INTERVAL] = { .type = NLA_U32 },
 643         [NL80211_WOWLAN_TCP_WAKE_PAYLOAD] = { .type = NLA_MIN_LEN, .len = 1 },
 644         [NL80211_WOWLAN_TCP_WAKE_MASK] = { .type = NLA_MIN_LEN, .len = 1 },
 645 };
 646 #endif /* CONFIG_PM */
 647
 648 /* policy for coalesce rule attributes */
 649 static const struct nla_policy
 650 nl80211_coalesce_policy[NUM_NL80211_ATTR_COALESCE_RULE] = {
 651         [NL80211_ATTR_COALESCE_RULE_DELAY] = { .type = NLA_U32 },
 652         [NL80211_ATTR_COALESCE_RULE_CONDITION] =
 653                 NLA_POLICY_RANGE(NLA_U32,
 654                                  NL80211_COALESCE_CONDITION_MATCH,
 655                                  NL80211_COALESCE_CONDITION_NO_MATCH),
 656         [NL80211_ATTR_COALESCE_RULE_PKT_PATTERN] = { .type = NLA_NESTED },
 657 };
 658
 659 /* policy for GTK rekey offload attributes */
 660 static const struct nla_policy
 661 nl80211_rekey_policy[NUM_NL80211_REKEY_DATA] = {
 662         [NL80211_REKEY_DATA_KEK] = {
 663                 .type = NLA_EXACT_LEN_WARN,
 664                 .len = NL80211_KEK_LEN,
 665         },
 666         [NL80211_REKEY_DATA_KCK] = {
 667                 .type = NLA_EXACT_LEN_WARN,
 668                 .len = NL80211_KCK_LEN,
 669         },
 670         [NL80211_REKEY_DATA_REPLAY_CTR] = {
 671                 .type = NLA_EXACT_LEN_WARN,
 672                 .len = NL80211_REPLAY_CTR_LEN
 673         },
 674 };
 675
 676 static const struct nla_policy
 677 nl80211_match_band_rssi_policy[NUM_NL80211_BANDS] = {
 678         [NL80211_BAND_2GHZ] = { .type = NLA_S32 },
 679         [NL80211_BAND_5GHZ] = { .type = NLA_S32 },
 680         [NL80211_BAND_6GHZ] = { .type = NLA_S32 },
 681         [NL80211_BAND_60GHZ] = { .type = NLA_S32 },
 682 };
 683
 684 static const struct nla_policy
 685 nl80211_match_policy[NL80211_SCHED_SCAN_MATCH_ATTR_MAX + 1] = {
 686         [NL80211_SCHED_SCAN_MATCH_ATTR_SSID] = { .type = NLA_BINARY,
 687                                                  .len = IEEE80211_MAX_SSID_LEN },
 688         [NL80211_SCHED_SCAN_MATCH_ATTR_BSSID] = {
 689                 .type = NLA_EXACT_LEN_WARN,
 690                 .len = ETH_ALEN
 691         },
 692         [NL80211_SCHED_SCAN_MATCH_ATTR_RSSI] = { .type = NLA_U32 },
 693         [NL80211_SCHED_SCAN_MATCH_PER_BAND_RSSI] =
 694                 NLA_POLICY_NESTED(nl80211_match_band_rssi_policy),
 695 };
 696
 697 static const struct nla_policy
 698 nl80211_plan_policy[NL80211_SCHED_SCAN_PLAN_MAX + 1] = {
 699         [NL80211_SCHED_SCAN_PLAN_INTERVAL] = { .type = NLA_U32 },
 700         [NL80211_SCHED_SCAN_PLAN_ITERATIONS] = { .type = NLA_U32 },
 701 };
 702
 703 static const struct nla_policy
 704 nl80211_bss_select_policy[NL80211_BSS_SELECT_ATTR_MAX + 1] = {
 705         [NL80211_BSS_SELECT_ATTR_RSSI] = { .type = NLA_FLAG },
 706         [NL80211_BSS_SELECT_ATTR_BAND_PREF] = { .type = NLA_U32 },
 707         [NL80211_BSS_SELECT_ATTR_RSSI_ADJUST] = {
 708                 .len = sizeof(struct nl80211_bss_select_rssi_adjust)
 709         },
 710 };
 711
 712 /* policy for NAN function attributes */
 713 static const struct nla_policy
 714 nl80211_nan_func_policy[NL80211_NAN_FUNC_ATTR_MAX + 1] = {
 715         [NL80211_NAN_FUNC_TYPE] = { .type = NLA_U8 },
 716         [NL80211_NAN_FUNC_SERVICE_ID] = {
 717                                     .len = NL80211_NAN_FUNC_SERVICE_ID_LEN },
 718         [NL80211_NAN_FUNC_PUBLISH_TYPE] = { .type = NLA_U8 },
 719         [NL80211_NAN_FUNC_PUBLISH_BCAST] = { .type = NLA_FLAG },
 720         [NL80211_NAN_FUNC_SUBSCRIBE_ACTIVE] = { .type = NLA_FLAG },
 721         [NL80211_NAN_FUNC_FOLLOW_UP_ID] = { .type = NLA_U8 },
 722         [NL80211_NAN_FUNC_FOLLOW_UP_REQ_ID] = { .type = NLA_U8 },
 723         [NL80211_NAN_FUNC_FOLLOW_UP_DEST] = {
 724                 .type = NLA_EXACT_LEN_WARN,
 725                 .len = ETH_ALEN
 726         },
 727         [NL80211_NAN_FUNC_CLOSE_RANGE] = { .type = NLA_FLAG },
 728         [NL80211_NAN_FUNC_TTL] = { .type = NLA_U32 },
 729         [NL80211_NAN_FUNC_SERVICE_INFO] = { .type = NLA_BINARY,
 730                         .len = NL80211_NAN_FUNC_SERVICE_SPEC_INFO_MAX_LEN },
 731         [NL80211_NAN_FUNC_SRF] = { .type = NLA_NESTED },
 732         [NL80211_NAN_FUNC_RX_MATCH_FILTER] = { .type = NLA_NESTED },
 733         [NL80211_NAN_FUNC_TX_MATCH_FILTER] = { .type = NLA_NESTED },
 734         [NL80211_NAN_FUNC_INSTANCE_ID] = { .type = NLA_U8 },
 735         [NL80211_NAN_FUNC_TERM_REASON] = { .type = NLA_U8 },
 736 };
 737
 738 /* policy for Service Response Filter attributes */
 739 static const struct nla_policy
 740 nl80211_nan_srf_policy[NL80211_NAN_SRF_ATTR_MAX + 1] = {
 741         [NL80211_NAN_SRF_INCLUDE] = { .type = NLA_FLAG },
 742         [NL80211_NAN_SRF_BF] = { .type = NLA_BINARY,
 743                                  .len =  NL80211_NAN_FUNC_SRF_MAX_LEN },
 744         [NL80211_NAN_SRF_BF_IDX] = { .type = NLA_U8 },
 745         [NL80211_NAN_SRF_MAC_ADDRS] = { .type = NLA_NESTED },
 746 };
 747
 748 /* policy for packet pattern attributes */
 749 static const struct nla_policy
 750 nl80211_packet_pattern_policy[MAX_NL80211_PKTPAT + 1] = {
 751         [NL80211_PKTPAT_MASK] = { .type = NLA_BINARY, },
 752         [NL80211_PKTPAT_PATTERN] = { .type = NLA_BINARY, },
 753         [NL80211_PKTPAT_OFFSET] = { .type = NLA_U32 },
 754 };
 755
 756 int nl80211_prepare_wdev_dump(struct netlink_callback *cb,
 757                               struct cfg80211_registered_device **rdev,
 758                               struct wireless_dev **wdev)
 759 {
 760         int err;
 761
 762         if (!cb->args[0]) {
 763                 struct nlattr **attrbuf;
 764
 765                 attrbuf = kcalloc(NUM_NL80211_ATTR, sizeof(*attrbuf),
 766                                   GFP_KERNEL);
 767                 if (!attrbuf)
 768                         return -ENOMEM;
 769
 770                 err = nlmsg_parse_deprecated(cb->nlh,
 771                                              GENL_HDRLEN + nl80211_fam.hdrsize,
 772                                              attrbuf, nl80211_fam.maxattr,
 773                                              nl80211_policy, NULL);
 774                 if (err) {
 775                         kfree(attrbuf);
 776                         return err;
 777                 }
 778
 779                 *wdev = __cfg80211_wdev_from_attrs(sock_net(cb->skb->sk),
 780                                                    attrbuf);
 781                 kfree(attrbuf);
 782                 if (IS_ERR(*wdev))
 783                         return PTR_ERR(*wdev);
 784                 *rdev = wiphy_to_rdev((*wdev)->wiphy);
 785                 /* 0 is the first index - add 1 to parse only once */
 786                 cb->args[0] = (*rdev)->wiphy_idx + 1;
 787                 cb->args[1] = (*wdev)->identifier;
 788         } else {
 789                 /* subtract the 1 again here */
 790                 struct wiphy *wiphy = wiphy_idx_to_wiphy(cb->args[0] - 1);
 791                 struct wireless_dev *tmp;
 792
 793                 if (!wiphy)
 794                         return -ENODEV;
 795                 *rdev = wiphy_to_rdev(wiphy);
 796                 *wdev = NULL;
 797
 798                 list_for_each_entry(tmp, &(*rdev)->wiphy.wdev_list, list) {
 799                         if (tmp->identifier == cb->args[1]) {
 800                                 *wdev = tmp;
 801                                 break;
 802                         }
 803                 }
 804
 805                 if (!*wdev)
 806                         return -ENODEV;
 807         }
 808
 809         return 0;
 810 }
 811
 812 /* message building helper */
 813 void *nl80211hdr_put(struct sk_buff *skb, u32 portid, u32 seq,
 814                      int flags, u8 cmd)
 815 {
 816         /* since there is no private header just add the generic one */
 817         return genlmsg_put(skb, portid, seq, &nl80211_fam, flags, cmd);
 818 }
 819
 820 static int nl80211_msg_put_wmm_rules(struct sk_buff *msg,
 821                                      const struct ieee80211_reg_rule *rule)
 822 {
 823         int j;
 824         struct nlattr *nl_wmm_rules =
 825                 nla_nest_start_noflag(msg, NL80211_FREQUENCY_ATTR_WMM);
 826
 827         if (!nl_wmm_rules)
 828                 goto nla_put_failure;
 829
 830         for (j = 0; j < IEEE80211_NUM_ACS; j++) {
 831                 struct nlattr *nl_wmm_rule = nla_nest_start_noflag(msg, j);
 832
 833                 if (!nl_wmm_rule)
 834                         goto nla_put_failure;
 835
 836                 if (nla_put_u16(msg, NL80211_WMMR_CW_MIN,
 837                                 rule->wmm_rule.client[j].cw_min) ||
 838                     nla_put_u16(msg, NL80211_WMMR_CW_MAX,
 839                                 rule->wmm_rule.client[j].cw_max) ||
 840                     nla_put_u8(msg, NL80211_WMMR_AIFSN,
 841                                rule->wmm_rule.client[j].aifsn) ||
 842                     nla_put_u16(msg, NL80211_WMMR_TXOP,
 843                                 rule->wmm_rule.client[j].cot))
 844                         goto nla_put_failure;
 845
 846                 nla_nest_end(msg, nl_wmm_rule);
 847         }
 848         nla_nest_end(msg, nl_wmm_rules);
 849
 850         return 0;
 851
 852 nla_put_failure:
 853         return -ENOBUFS;
 854 }
 855
 856 static int nl80211_msg_put_channel(struct sk_buff *msg, struct wiphy *wiphy,
 857                                    struct ieee80211_channel *chan,
 858                                    bool large)
 859 {
 860         /* Some channels must be completely excluded from the
 861          * list to protect old user-space tools from breaking
 862          */
 863         if (!large && chan->flags &
 864             (IEEE80211_CHAN_NO_10MHZ | IEEE80211_CHAN_NO_20MHZ))
 865                 return 0;
 866
 867         if (nla_put_u32(msg, NL80211_FREQUENCY_ATTR_FREQ,
 868                         chan->center_freq))
 869                 goto nla_put_failure;
 870
 871         if ((chan->flags & IEEE80211_CHAN_DISABLED) &&
 872             nla_put_flag(msg, NL80211_FREQUENCY_ATTR_DISABLED))
 873                 goto nla_put_failure;
 874         if (chan->flags & IEEE80211_CHAN_NO_IR) {
 875                 if (nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_IR))
 876                         goto nla_put_failure;
 877                 if (nla_put_flag(msg, __NL80211_FREQUENCY_ATTR_NO_IBSS))
 878                         goto nla_put_failure;
 879         }
 880         if (chan->flags & IEEE80211_CHAN_RADAR) {
 881                 if (nla_put_flag(msg, NL80211_FREQUENCY_ATTR_RADAR))
 882                         goto nla_put_failure;
 883                 if (large) {
 884                         u32 time;
 885
 886                         time = elapsed_jiffies_msecs(chan->dfs_state_entered);
 887
 888                         if (nla_put_u32(msg, NL80211_FREQUENCY_ATTR_DFS_STATE,
 889                                         chan->dfs_state))
 890                                 goto nla_put_failure;
 891                         if (nla_put_u32(msg, NL80211_FREQUENCY_ATTR_DFS_TIME,
 892                                         time))
 893                                 goto nla_put_failure;
 894                         if (nla_put_u32(msg,
 895                                         NL80211_FREQUENCY_ATTR_DFS_CAC_TIME,
 896                                         chan->dfs_cac_ms))
 897                                 goto nla_put_failure;
 898                 }
 899         }
 900
 901         if (large) {
 902                 if ((chan->flags & IEEE80211_CHAN_NO_HT40MINUS) &&
 903                     nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_HT40_MINUS))
 904                         goto nla_put_failure;
 905                 if ((chan->flags & IEEE80211_CHAN_NO_HT40PLUS) &&
 906                     nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_HT40_PLUS))
 907                         goto nla_put_failure;
 908                 if ((chan->flags & IEEE80211_CHAN_NO_80MHZ) &&
 909                     nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_80MHZ))
 910                         goto nla_put_failure;
 911                 if ((chan->flags & IEEE80211_CHAN_NO_160MHZ) &&
 912                     nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_160MHZ))
 913                         goto nla_put_failure;
 914                 if ((chan->flags & IEEE80211_CHAN_INDOOR_ONLY) &&
 915                     nla_put_flag(msg, NL80211_FREQUENCY_ATTR_INDOOR_ONLY))
 916                         goto nla_put_failure;
 917                 if ((chan->flags & IEEE80211_CHAN_IR_CONCURRENT) &&
 918                     nla_put_flag(msg, NL80211_FREQUENCY_ATTR_IR_CONCURRENT))
 919                         goto nla_put_failure;
 920                 if ((chan->flags & IEEE80211_CHAN_NO_20MHZ) &&
 921                     nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_20MHZ))
 922                         goto nla_put_failure;
 923                 if ((chan->flags & IEEE80211_CHAN_NO_10MHZ) &&
 924                     nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_10MHZ))
 925                         goto nla_put_failure;
 926         }
 927
 928         if (nla_put_u32(msg, NL80211_FREQUENCY_ATTR_MAX_TX_POWER,
 929                         DBM_TO_MBM(chan->max_power)))
 930                 goto nla_put_failure;
 931
 932         if (large) {
 933                 const struct ieee80211_reg_rule *rule =
 934                         freq_reg_info(wiphy, MHZ_TO_KHZ(chan->center_freq));
 935
 936                 if (!IS_ERR_OR_NULL(rule) && rule->has_wmm) {
 937                         if (nl80211_msg_put_wmm_rules(msg, rule))
 938                                 goto nla_put_failure;
 939                 }
 940         }
 941
 942         return 0;
 943
 944  nla_put_failure:
 945         return -ENOBUFS;
 946 }
 947
 948 static bool nl80211_put_txq_stats(struct sk_buff *msg,
 949                                   struct cfg80211_txq_stats *txqstats,
 950                                   int attrtype)
 951 {
 952         struct nlattr *txqattr;
 953
 954 #define PUT_TXQVAL_U32(attr, memb) do {                                   \
 955         if (txqstats->filled & BIT(NL80211_TXQ_STATS_ ## attr) &&         \
 956             nla_put_u32(msg, NL80211_TXQ_STATS_ ## attr, txqstats->memb)) \
 957                 return false;                                             \
 958         } while (0)
 959
 960         txqattr = nla_nest_start_noflag(msg, attrtype);
 961         if (!txqattr)
 962                 return false;
 963
 964         PUT_TXQVAL_U32(BACKLOG_BYTES, backlog_bytes);
 965         PUT_TXQVAL_U32(BACKLOG_PACKETS, backlog_packets);
 966         PUT_TXQVAL_U32(FLOWS, flows);
 967         PUT_TXQVAL_U32(DROPS, drops);
 968         PUT_TXQVAL_U32(ECN_MARKS, ecn_marks);
 969         PUT_TXQVAL_U32(OVERLIMIT, overlimit);
 970         PUT_TXQVAL_U32(OVERMEMORY, overmemory);
 971         PUT_TXQVAL_U32(COLLISIONS, collisions);
 972         PUT_TXQVAL_U32(TX_BYTES, tx_bytes);
 973         PUT_TXQVAL_U32(TX_PACKETS, tx_packets);
 974         PUT_TXQVAL_U32(MAX_FLOWS, max_flows);
 975         nla_nest_end(msg, txqattr);
 976
 977 #undef PUT_TXQVAL_U32
 978         return true;
 979 }
 980
 981 /* netlink command implementations */
 982
 983 struct key_parse {
 984         struct key_params p;
 985         int idx;
 986         int type;
 987         bool def, defmgmt;
 988         bool def_uni, def_multi;
 989 };
 990
 991 static int nl80211_parse_key_new(struct genl_info *info, struct nlattr *key,
 992                                  struct key_parse *k)
 993 {
 994         struct nlattr *tb[NL80211_KEY_MAX + 1];
 995         int err = nla_parse_nested_deprecated(tb, NL80211_KEY_MAX, key,
 996                                               nl80211_key_policy,
 997                                               info->extack);
 998         if (err)
 999                 return err;
1000
1001         k->def = !!tb[NL80211_KEY_DEFAULT];
1002         k->defmgmt = !!tb[NL80211_KEY_DEFAULT_MGMT];
1003
1004         if (k->def) {
1005                 k->def_uni = true;
1006                 k->def_multi = true;
1007         }
1008         if (k->defmgmt)
1009                 k->def_multi = true;
1010
1011         if (tb[NL80211_KEY_IDX])
1012                 k->idx = nla_get_u8(tb[NL80211_KEY_IDX]);
1013
1014         if (tb[NL80211_KEY_DATA]) {
1015                 k->p.key = nla_data(tb[NL80211_KEY_DATA]);
1016                 k->p.key_len = nla_len(tb[NL80211_KEY_DATA]);
1017         }
1018
1019         if (tb[NL80211_KEY_SEQ]) {
1020                 k->p.seq = nla_data(tb[NL80211_KEY_SEQ]);
1021                 k->p.seq_len = nla_len(tb[NL80211_KEY_SEQ]);
1022         }
1023
1024         if (tb[NL80211_KEY_CIPHER])
1025                 k->p.cipher = nla_get_u32(tb[NL80211_KEY_CIPHER]);
1026
1027         if (tb[NL80211_KEY_TYPE])
1028                 k->type = nla_get_u32(tb[NL80211_KEY_TYPE]);
1029
1030         if (tb[NL80211_KEY_DEFAULT_TYPES]) {
1031                 struct nlattr *kdt[NUM_NL80211_KEY_DEFAULT_TYPES];
1032
1033                 err = nla_parse_nested_deprecated(kdt,
1034                                                   NUM_NL80211_KEY_DEFAULT_TYPES - 1,
1035                                                   tb[NL80211_KEY_DEFAULT_TYPES],
1036                                                   nl80211_key_default_policy,
1037                                                   info->extack);
1038                 if (err)
1039                         return err;
1040
1041                 k->def_uni = kdt[NL80211_KEY_DEFAULT_TYPE_UNICAST];
1042                 k->def_multi = kdt[NL80211_KEY_DEFAULT_TYPE_MULTICAST];
1043         }
1044
1045         if (tb[NL80211_KEY_MODE])
1046                 k->p.mode = nla_get_u8(tb[NL80211_KEY_MODE]);
1047
1048         return 0;
1049 }
1050
1051 static int nl80211_parse_key_old(struct genl_info *info, struct key_parse *k)
1052 {
1053         if (info->attrs[NL80211_ATTR_KEY_DATA]) {
1054                 k->p.key = nla_data(info->attrs[NL80211_ATTR_KEY_DATA]);
1055                 k->p.key_len = nla_len(info->attrs[NL80211_ATTR_KEY_DATA]);
1056         }
1057
1058         if (info->attrs[NL80211_ATTR_KEY_SEQ]) {
1059                 k->p.seq = nla_data(info->attrs[NL80211_ATTR_KEY_SEQ]);
1060                 k->p.seq_len = nla_len(info->attrs[NL80211_ATTR_KEY_SEQ]);
1061         }
1062
1063         if (info->attrs[NL80211_ATTR_KEY_IDX])
1064                 k->idx = nla_get_u8(info->attrs[NL80211_ATTR_KEY_IDX]);
1065
1066         if (info->attrs[NL80211_ATTR_KEY_CIPHER])
1067                 k->p.cipher = nla_get_u32(info->attrs[NL80211_ATTR_KEY_CIPHER]);
1068
1069         k->def = !!info->attrs[NL80211_ATTR_KEY_DEFAULT];
1070         k->defmgmt = !!info->attrs[NL80211_ATTR_KEY_DEFAULT_MGMT];
1071
1072         if (k->def) {
1073                 k->def_uni = true;
1074                 k->def_multi = true;
1075         }
1076         if (k->defmgmt)
1077                 k->def_multi = true;
1078
1079         if (info->attrs[NL80211_ATTR_KEY_TYPE])
1080                 k->type = nla_get_u32(info->attrs[NL80211_ATTR_KEY_TYPE]);
1081
1082         if (info->attrs[NL80211_ATTR_KEY_DEFAULT_TYPES]) {
1083                 struct nlattr *kdt[NUM_NL80211_KEY_DEFAULT_TYPES];
1084                 int err = nla_parse_nested_deprecated(kdt,
1085                                                       NUM_NL80211_KEY_DEFAULT_TYPES - 1,
1086                                                       info->attrs[NL80211_ATTR_KEY_DEFAULT_TYPES],
1087                                                       nl80211_key_default_policy,
1088                                                       info->extack);
1089                 if (err)
1090                         return err;
1091
1092                 k->def_uni = kdt[NL80211_KEY_DEFAULT_TYPE_UNICAST];
1093                 k->def_multi = kdt[NL80211_KEY_DEFAULT_TYPE_MULTICAST];
1094         }
1095
1096         return 0;
1097 }
1098
1099 static int nl80211_parse_key(struct genl_info *info, struct key_parse *k)
1100 {
1101         int err;
1102
1103         memset(k, 0, sizeof(*k));
1104         k->idx = -1;
1105         k->type = -1;
1106
1107         if (info->attrs[NL80211_ATTR_KEY])
1108                 err = nl80211_parse_key_new(info, info->attrs[NL80211_ATTR_KEY], k);
1109         else
1110                 err = nl80211_parse_key_old(info, k);
1111
1112         if (err)
1113                 return err;
1114
1115         if (k->def && k->defmgmt) {
1116                 GENL_SET_ERR_MSG(info, "key with def && defmgmt is invalid");
1117                 return -EINVAL;
1118         }
1119
1120         if (k->defmgmt) {
1121                 if (k->def_uni || !k->def_multi) {
1122                         GENL_SET_ERR_MSG(info, "defmgmt key must be mcast");
1123                         return -EINVAL;
1124                 }
1125         }
1126
1127         if (k->idx != -1) {
1128                 if (k->defmgmt) {
1129                         if (k->idx < 4 || k->idx > 5) {
1130                                 GENL_SET_ERR_MSG(info,
1131                                                  "defmgmt key idx not 4 or 5");
1132                                 return -EINVAL;
1133                         }
1134                 } else if (k->def) {
1135                         if (k->idx < 0 || k->idx > 3) {
1136                                 GENL_SET_ERR_MSG(info, "def key idx not 0-3");
1137                                 return -EINVAL;
1138                         }
1139                 } else {
1140                         if (k->idx < 0 || k->idx > 5) {
1141                                 GENL_SET_ERR_MSG(info, "key idx not 0-5");
1142                                 return -EINVAL;
1143                         }
1144                 }
1145         }
1146
1147         return 0;
1148 }
1149
1150 static struct cfg80211_cached_keys *
1151 nl80211_parse_connkeys(struct cfg80211_registered_device *rdev,
1152                        struct genl_info *info, bool *no_ht)
1153 {
1154         struct nlattr *keys = info->attrs[NL80211_ATTR_KEYS];
1155         struct key_parse parse;
1156         struct nlattr *key;
1157         struct cfg80211_cached_keys *result;
1158         int rem, err, def = 0;
1159         bool have_key = false;
1160
1161         nla_for_each_nested(key, keys, rem) {
1162                 have_key = true;
1163                 break;
1164         }
1165
1166         if (!have_key)
1167                 return NULL;
1168
1169         result = kzalloc(sizeof(*result), GFP_KERNEL);
1170         if (!result)
1171                 return ERR_PTR(-ENOMEM);
1172
1173         result->def = -1;
1174
1175         nla_for_each_nested(key, keys, rem) {
1176                 memset(&parse, 0, sizeof(parse));
1177                 parse.idx = -1;
1178
1179                 err = nl80211_parse_key_new(info, key, &parse);
1180                 if (err)
1181                         goto error;
1182                 err = -EINVAL;
1183                 if (!parse.p.key)
1184                         goto error;
1185                 if (parse.idx < 0 || parse.idx > 3) {
1186                         GENL_SET_ERR_MSG(info, "key index out of range [0-3]");
1187                         goto error;
1188                 }
1189                 if (parse.def) {
1190                         if (def) {
1191                                 GENL_SET_ERR_MSG(info,
1192                                                  "only one key can be default");
1193                                 goto error;
1194                         }
1195                         def = 1;
1196                         result->def = parse.idx;
1197                         if (!parse.def_uni || !parse.def_multi)
1198                                 goto error;
1199                 } else if (parse.defmgmt)
1200                         goto error;
1201                 err = cfg80211_validate_key_settings(rdev, &parse.p,
1202                                                      parse.idx, false, NULL);
1203                 if (err)
1204                         goto error;
1205                 if (parse.p.cipher != WLAN_CIPHER_SUITE_WEP40 &&
1206                     parse.p.cipher != WLAN_CIPHER_SUITE_WEP104) {
1207                         GENL_SET_ERR_MSG(info, "connect key must be WEP");
1208                         err = -EINVAL;
1209                         goto error;
1210                 }
1211                 result->params[parse.idx].cipher = parse.p.cipher;
1212                 result->params[parse.idx].key_len = parse.p.key_len;
1213                 result->params[parse.idx].key = result->data[parse.idx];
1214                 memcpy(result->data[parse.idx], parse.p.key, parse.p.key_len);
1215
1216                 /* must be WEP key if we got here */
1217                 if (no_ht)
1218                         *no_ht = true;
1219         }
1220
1221         if (result->def < 0) {
1222                 err = -EINVAL;
1223                 GENL_SET_ERR_MSG(info, "need a default/TX key");
1224                 goto error;
1225         }
1226
1227         return result;
1228  error:
1229         kfree(result);
1230         return ERR_PTR(err);
1231 }
1232
1233 static int nl80211_key_allowed(struct wireless_dev *wdev)
1234 {
1235         ASSERT_WDEV_LOCK(wdev);
1236
1237         switch (wdev->iftype) {
1238         case NL80211_IFTYPE_AP:
1239         case NL80211_IFTYPE_AP_VLAN:
1240         case NL80211_IFTYPE_P2P_GO:
1241         case NL80211_IFTYPE_MESH_POINT:
1242                 break;
1243         case NL80211_IFTYPE_ADHOC:
1244         case NL80211_IFTYPE_STATION:
1245         case NL80211_IFTYPE_P2P_CLIENT:
1246                 if (!wdev->current_bss)
1247                         return -ENOLINK;
1248                 break;
1249         case NL80211_IFTYPE_UNSPECIFIED:
1250         case NL80211_IFTYPE_OCB:
1251         case NL80211_IFTYPE_MONITOR:
1252         case NL80211_IFTYPE_NAN:
1253         case NL80211_IFTYPE_P2P_DEVICE:
1254         case NL80211_IFTYPE_WDS:
1255         case NUM_NL80211_IFTYPES:
1256                 return -EINVAL;
1257         }
1258
1259         return 0;
1260 }
1261
1262 static struct ieee80211_channel *nl80211_get_valid_chan(struct wiphy *wiphy,
1263                                                         struct nlattr *tb)
1264 {
1265         struct ieee80211_channel *chan;
1266
1267         if (tb == NULL)
1268                 return NULL;
1269         chan = ieee80211_get_channel(wiphy, nla_get_u32(tb));
1270         if (!chan || chan->flags & IEEE80211_CHAN_DISABLED)
1271                 return NULL;
1272         return chan;
1273 }
1274
1275 static int nl80211_put_iftypes(struct sk_buff *msg, u32 attr, u16 ifmodes)
1276 {
1277         struct nlattr *nl_modes = nla_nest_start_noflag(msg, attr);
1278         int i;
1279
1280         if (!nl_modes)
1281                 goto nla_put_failure;
1282
1283         i = 0;
1284         while (ifmodes) {
1285                 if ((ifmodes & 1) && nla_put_flag(msg, i))
1286                         goto nla_put_failure;
1287                 ifmodes >>= 1;
1288                 i++;
1289         }
1290
1291         nla_nest_end(msg, nl_modes);
1292         return 0;
1293
1294 nla_put_failure:
1295         return -ENOBUFS;
1296 }
1297
1298 static int nl80211_put_iface_combinations(struct wiphy *wiphy,
1299                                           struct sk_buff *msg,
1300                                           bool large)
1301 {
1302         struct nlattr *nl_combis;
1303         int i, j;
1304
1305         nl_combis = nla_nest_start_noflag(msg,
1306                                           NL80211_ATTR_INTERFACE_COMBINATIONS);
1307         if (!nl_combis)
1308                 goto nla_put_failure;
1309
1310         for (i = 0; i < wiphy->n_iface_combinations; i++) {
1311                 const struct ieee80211_iface_combination *c;
1312                 struct nlattr *nl_combi, *nl_limits;
1313
1314                 c = &wiphy->iface_combinations[i];
1315
1316                 nl_combi = nla_nest_start_noflag(msg, i + 1);
1317                 if (!nl_combi)
1318                         goto nla_put_failure;
1319
1320                 nl_limits = nla_nest_start_noflag(msg,
1321                                                   NL80211_IFACE_COMB_LIMITS);
1322                 if (!nl_limits)
1323                         goto nla_put_failure;
1324
1325                 for (j = 0; j < c->n_limits; j++) {
1326                         struct nlattr *nl_limit;
1327
1328                         nl_limit = nla_nest_start_noflag(msg, j + 1);
1329                         if (!nl_limit)
1330                                 goto nla_put_failure;
1331                         if (nla_put_u32(msg, NL80211_IFACE_LIMIT_MAX,
1332                                         c->limits[j].max))
1333                                 goto nla_put_failure;
1334                         if (nl80211_put_iftypes(msg, NL80211_IFACE_LIMIT_TYPES,
1335                                                 c->limits[j].types))
1336                                 goto nla_put_failure;
1337                         nla_nest_end(msg, nl_limit);
1338                 }
1339
1340                 nla_nest_end(msg, nl_limits);
1341
1342                 if (c->beacon_int_infra_match &&
1343                     nla_put_flag(msg, NL80211_IFACE_COMB_STA_AP_BI_MATCH))
1344                         goto nla_put_failure;
1345                 if (nla_put_u32(msg, NL80211_IFACE_COMB_NUM_CHANNELS,
1346                                 c->num_different_channels) ||
1347                     nla_put_u32(msg, NL80211_IFACE_COMB_MAXNUM,
1348                                 c->max_interfaces))
1349                         goto nla_put_failure;
1350                 if (large &&
1351                     (nla_put_u32(msg, NL80211_IFACE_COMB_RADAR_DETECT_WIDTHS,
1352                                 c->radar_detect_widths) ||
1353                      nla_put_u32(msg, NL80211_IFACE_COMB_RADAR_DETECT_REGIONS,
1354                                 c->radar_detect_regions)))
1355                         goto nla_put_failure;
1356                 if (c->beacon_int_min_gcd &&
1357                     nla_put_u32(msg, NL80211_IFACE_COMB_BI_MIN_GCD,
1358                                 c->beacon_int_min_gcd))
1359                         goto nla_put_failure;
1360
1361                 nla_nest_end(msg, nl_combi);
1362         }
1363
1364         nla_nest_end(msg, nl_combis);
1365
1366         return 0;
1367 nla_put_failure:
1368         return -ENOBUFS;
1369 }
1370
1371 #ifdef CONFIG_PM
1372 static int nl80211_send_wowlan_tcp_caps(struct cfg80211_registered_device *rdev,
1373                                         struct sk_buff *msg)
1374 {
1375         const struct wiphy_wowlan_tcp_support *tcp = rdev->wiphy.wowlan->tcp;
1376         struct nlattr *nl_tcp;
1377
1378         if (!tcp)
1379                 return 0;
1380
1381         nl_tcp = nla_nest_start_noflag(msg,
1382                                        NL80211_WOWLAN_TRIG_TCP_CONNECTION);
1383         if (!nl_tcp)
1384                 return -ENOBUFS;
1385
1386         if (nla_put_u32(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD,
1387                         tcp->data_payload_max))
1388                 return -ENOBUFS;
1389
1390         if (nla_put_u32(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD,
1391                         tcp->data_payload_max))
1392                 return -ENOBUFS;
1393
1394         if (tcp->seq && nla_put_flag(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ))
1395                 return -ENOBUFS;
1396
1397         if (tcp->tok && nla_put(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN,
1398                                 sizeof(*tcp->tok), tcp->tok))
1399                 return -ENOBUFS;
1400
1401         if (nla_put_u32(msg, NL80211_WOWLAN_TCP_DATA_INTERVAL,
1402                         tcp->data_interval_max))
1403                 return -ENOBUFS;
1404
1405         if (nla_put_u32(msg, NL80211_WOWLAN_TCP_WAKE_PAYLOAD,
1406                         tcp->wake_payload_max))
1407                 return -ENOBUFS;
1408
1409         nla_nest_end(msg, nl_tcp);
1410         return 0;
1411 }
1412
1413 static int nl80211_send_wowlan(struct sk_buff *msg,
1414                                struct cfg80211_registered_device *rdev,
1415                                bool large)
1416 {
1417         struct nlattr *nl_wowlan;
1418
1419         if (!rdev->wiphy.wowlan)
1420                 return 0;
1421
1422         nl_wowlan = nla_nest_start_noflag(msg,
1423                                           NL80211_ATTR_WOWLAN_TRIGGERS_SUPPORTED);
1424         if (!nl_wowlan)
1425                 return -ENOBUFS;
1426
1427         if (((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_ANY) &&
1428              nla_put_flag(msg, NL80211_WOWLAN_TRIG_ANY)) ||
1429             ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_DISCONNECT) &&
1430              nla_put_flag(msg, NL80211_WOWLAN_TRIG_DISCONNECT)) ||
1431             ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_MAGIC_PKT) &&
1432              nla_put_flag(msg, NL80211_WOWLAN_TRIG_MAGIC_PKT)) ||
1433             ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_SUPPORTS_GTK_REKEY) &&
1434              nla_put_flag(msg, NL80211_WOWLAN_TRIG_GTK_REKEY_SUPPORTED)) ||
1435             ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_GTK_REKEY_FAILURE) &&
1436              nla_put_flag(msg, NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE)) ||
1437             ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_EAP_IDENTITY_REQ) &&
1438              nla_put_flag(msg, NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST)) ||
1439             ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_4WAY_HANDSHAKE) &&
1440              nla_put_flag(msg, NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE)) ||
1441             ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_RFKILL_RELEASE) &&
1442              nla_put_flag(msg, NL80211_WOWLAN_TRIG_RFKILL_RELEASE)))
1443                 return -ENOBUFS;
1444
1445         if (rdev->wiphy.wowlan->n_patterns) {
1446                 struct nl80211_pattern_support pat = {
1447                         .max_patterns = rdev->wiphy.wowlan->n_patterns,
1448                         .min_pattern_len = rdev->wiphy.wowlan->pattern_min_len,
1449                         .max_pattern_len = rdev->wiphy.wowlan->pattern_max_len,
1450                         .max_pkt_offset = rdev->wiphy.wowlan->max_pkt_offset,
1451                 };
1452
1453                 if (nla_put(msg, NL80211_WOWLAN_TRIG_PKT_PATTERN,
1454                             sizeof(pat), &pat))
1455                         return -ENOBUFS;
1456         }
1457
1458         if ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_NET_DETECT) &&
1459             nla_put_u32(msg, NL80211_WOWLAN_TRIG_NET_DETECT,
1460                         rdev->wiphy.wowlan->max_nd_match_sets))
1461                 return -ENOBUFS;
1462
1463         if (large && nl80211_send_wowlan_tcp_caps(rdev, msg))
1464                 return -ENOBUFS;
1465
1466         nla_nest_end(msg, nl_wowlan);
1467
1468         return 0;
1469 }
1470 #endif
1471
1472 static int nl80211_send_coalesce(struct sk_buff *msg,
1473                                  struct cfg80211_registered_device *rdev)
1474 {
1475         struct nl80211_coalesce_rule_support rule;
1476
1477         if (!rdev->wiphy.coalesce)
1478                 return 0;
1479
1480         rule.max_rules = rdev->wiphy.coalesce->n_rules;
1481         rule.max_delay = rdev->wiphy.coalesce->max_delay;
1482         rule.pat.max_patterns = rdev->wiphy.coalesce->n_patterns;
1483         rule.pat.min_pattern_len = rdev->wiphy.coalesce->pattern_min_len;
1484         rule.pat.max_pattern_len = rdev->wiphy.coalesce->pattern_max_len;
1485         rule.pat.max_pkt_offset = rdev->wiphy.coalesce->max_pkt_offset;
1486
1487         if (nla_put(msg, NL80211_ATTR_COALESCE_RULE, sizeof(rule), &rule))
1488                 return -ENOBUFS;
1489
1490         return 0;
1491 }
1492
1493 static int
1494 nl80211_send_iftype_data(struct sk_buff *msg,
1495                          const struct ieee80211_sband_iftype_data *iftdata)
1496 {
1497         const struct ieee80211_sta_he_cap *he_cap = &iftdata->he_cap;
1498
1499         if (nl80211_put_iftypes(msg, NL80211_BAND_IFTYPE_ATTR_IFTYPES,
1500                                 iftdata->types_mask))
1501                 return -ENOBUFS;
1502
1503         if (he_cap->has_he) {
1504                 if (nla_put(msg, NL80211_BAND_IFTYPE_ATTR_HE_CAP_MAC,
1505                             sizeof(he_cap->he_cap_elem.mac_cap_info),
1506                             he_cap->he_cap_elem.mac_cap_info) ||
1507                     nla_put(msg, NL80211_BAND_IFTYPE_ATTR_HE_CAP_PHY,
1508                             sizeof(he_cap->he_cap_elem.phy_cap_info),
1509                             he_cap->he_cap_elem.phy_cap_info) ||
1510                     nla_put(msg, NL80211_BAND_IFTYPE_ATTR_HE_CAP_MCS_SET,
1511                             sizeof(he_cap->he_mcs_nss_supp),
1512                             &he_cap->he_mcs_nss_supp) ||
1513                     nla_put(msg, NL80211_BAND_IFTYPE_ATTR_HE_CAP_PPE,
1514                             sizeof(he_cap->ppe_thres), he_cap->ppe_thres))
1515                         return -ENOBUFS;
1516         }
1517
1518         return 0;
1519 }
1520
1521 static int nl80211_send_band_rateinfo(struct sk_buff *msg,
1522                                       struct ieee80211_supported_band *sband)
1523 {
1524         struct nlattr *nl_rates, *nl_rate;
1525         struct ieee80211_rate *rate;
1526         int i;
1527
1528         /* add HT info */
1529         if (sband->ht_cap.ht_supported &&
1530             (nla_put(msg, NL80211_BAND_ATTR_HT_MCS_SET,
1531                      sizeof(sband->ht_cap.mcs),
1532                      &sband->ht_cap.mcs) ||
1533              nla_put_u16(msg, NL80211_BAND_ATTR_HT_CAPA,
1534                          sband->ht_cap.cap) ||
1535              nla_put_u8(msg, NL80211_BAND_ATTR_HT_AMPDU_FACTOR,
1536                         sband->ht_cap.ampdu_factor) ||
1537              nla_put_u8(msg, NL80211_BAND_ATTR_HT_AMPDU_DENSITY,
1538                         sband->ht_cap.ampdu_density)))
1539                 return -ENOBUFS;
1540
1541         /* add VHT info */
1542         if (sband->vht_cap.vht_supported &&
1543             (nla_put(msg, NL80211_BAND_ATTR_VHT_MCS_SET,
1544                      sizeof(sband->vht_cap.vht_mcs),
1545                      &sband->vht_cap.vht_mcs) ||
1546              nla_put_u32(msg, NL80211_BAND_ATTR_VHT_CAPA,
1547                          sband->vht_cap.cap)))
1548                 return -ENOBUFS;
1549
1550         if (sband->n_iftype_data) {
1551                 struct nlattr *nl_iftype_data =
1552                         nla_nest_start_noflag(msg,
1553                                               NL80211_BAND_ATTR_IFTYPE_DATA);
1554                 int err;
1555
1556                 if (!nl_iftype_data)
1557                         return -ENOBUFS;
1558
1559                 for (i = 0; i < sband->n_iftype_data; i++) {
1560                         struct nlattr *iftdata;
1561
1562                         iftdata = nla_nest_start_noflag(msg, i + 1);
1563                         if (!iftdata)
1564                                 return -ENOBUFS;
1565
1566                         err = nl80211_send_iftype_data(msg,
1567                                                        &sband->iftype_data[i]);
1568                         if (err)
1569                                 return err;
1570
1571                         nla_nest_end(msg, iftdata);
1572                 }
1573
1574                 nla_nest_end(msg, nl_iftype_data);
1575         }
1576
1577         /* add bitrates */
1578         nl_rates = nla_nest_start_noflag(msg, NL80211_BAND_ATTR_RATES);
1579         if (!nl_rates)
1580                 return -ENOBUFS;
1581
1582         for (i = 0; i < sband->n_bitrates; i++) {
1583                 nl_rate = nla_nest_start_noflag(msg, i);
1584                 if (!nl_rate)
1585                         return -ENOBUFS;
1586
1587                 rate = &sband->bitrates[i];
1588                 if (nla_put_u32(msg, NL80211_BITRATE_ATTR_RATE,
1589                                 rate->bitrate))
1590                         return -ENOBUFS;
1591                 if ((rate->flags & IEEE80211_RATE_SHORT_PREAMBLE) &&
1592                     nla_put_flag(msg,
1593                                  NL80211_BITRATE_ATTR_2GHZ_SHORTPREAMBLE))
1594                         return -ENOBUFS;
1595
1596                 nla_nest_end(msg, nl_rate);
1597         }
1598
1599         nla_nest_end(msg, nl_rates);
1600
1601         return 0;
1602 }
1603
1604 static int
1605 nl80211_send_mgmt_stypes(struct sk_buff *msg,
1606                          const struct ieee80211_txrx_stypes *mgmt_stypes)
1607 {
1608         u16 stypes;
1609         struct nlattr *nl_ftypes, *nl_ifs;
1610         enum nl80211_iftype ift;
1611         int i;
1612
1613         if (!mgmt_stypes)
1614                 return 0;
1615
1616         nl_ifs = nla_nest_start_noflag(msg, NL80211_ATTR_TX_FRAME_TYPES);
1617         if (!nl_ifs)
1618                 return -ENOBUFS;
1619
1620         for (ift = 0; ift < NUM_NL80211_IFTYPES; ift++) {
1621                 nl_ftypes = nla_nest_start_noflag(msg, ift);
1622                 if (!nl_ftypes)
1623                         return -ENOBUFS;
1624                 i = 0;
1625                 stypes = mgmt_stypes[ift].tx;
1626                 while (stypes) {
1627                         if ((stypes & 1) &&
1628                             nla_put_u16(msg, NL80211_ATTR_FRAME_TYPE,
1629                                         (i << 4) | IEEE80211_FTYPE_MGMT))
1630                                 return -ENOBUFS;
1631                         stypes >>= 1;
1632                         i++;
1633                 }
1634                 nla_nest_end(msg, nl_ftypes);
1635         }
1636
1637         nla_nest_end(msg, nl_ifs);
1638
1639         nl_ifs = nla_nest_start_noflag(msg, NL80211_ATTR_RX_FRAME_TYPES);
1640         if (!nl_ifs)
1641                 return -ENOBUFS;
1642
1643         for (ift = 0; ift < NUM_NL80211_IFTYPES; ift++) {
1644                 nl_ftypes = nla_nest_start_noflag(msg, ift);
1645                 if (!nl_ftypes)
1646                         return -ENOBUFS;
1647                 i = 0;
1648                 stypes = mgmt_stypes[ift].rx;
1649                 while (stypes) {
1650                         if ((stypes & 1) &&
1651                             nla_put_u16(msg, NL80211_ATTR_FRAME_TYPE,
1652                                         (i << 4) | IEEE80211_FTYPE_MGMT))
1653                                 return -ENOBUFS;
1654                         stypes >>= 1;
1655                         i++;
1656                 }
1657                 nla_nest_end(msg, nl_ftypes);
1658         }
1659         nla_nest_end(msg, nl_ifs);
1660
1661         return 0;
1662 }
1663
1664 #define CMD(op, n)                                                      \
1665          do {                                                           \
1666                 if (rdev->ops->op) {                                    \
1667                         i++;                                            \
1668                         if (nla_put_u32(msg, i, NL80211_CMD_ ## n))     \
1669                                 goto nla_put_failure;                   \
1670                 }                                                       \
1671         } while (0)
1672
1673 static int nl80211_add_commands_unsplit(struct cfg80211_registered_device *rdev,
1674                                         struct sk_buff *msg)
1675 {
1676         int i = 0;
1677
1678         /*
1679          * do *NOT* add anything into this function, new things need to be
1680          * advertised only to new versions of userspace that can deal with
1681          * the split (and they can't possibly care about new features...
1682          */
1683         CMD(add_virtual_intf, NEW_INTERFACE);
1684         CMD(change_virtual_intf, SET_INTERFACE);
1685         CMD(add_key, NEW_KEY);
1686         CMD(start_ap, START_AP);
1687         CMD(add_station, NEW_STATION);
1688         CMD(add_mpath, NEW_MPATH);
1689         CMD(update_mesh_config, SET_MESH_CONFIG);
1690         CMD(change_bss, SET_BSS);
1691         CMD(auth, AUTHENTICATE);
1692         CMD(assoc, ASSOCIATE);
1693         CMD(deauth, DEAUTHENTICATE);
1694         CMD(disassoc, DISASSOCIATE);
1695         CMD(join_ibss, JOIN_IBSS);
1696         CMD(join_mesh, JOIN_MESH);
1697         CMD(set_pmksa, SET_PMKSA);
1698         CMD(del_pmksa, DEL_PMKSA);
1699         CMD(flush_pmksa, FLUSH_PMKSA);
1700         if (rdev->wiphy.flags & WIPHY_FLAG_HAS_REMAIN_ON_CHANNEL)
1701                 CMD(remain_on_channel, REMAIN_ON_CHANNEL);
1702         CMD(set_bitrate_mask, SET_TX_BITRATE_MASK);
1703         CMD(mgmt_tx, FRAME);
1704         CMD(mgmt_tx_cancel_wait, FRAME_WAIT_CANCEL);
1705         if (rdev->wiphy.flags & WIPHY_FLAG_NETNS_OK) {
1706                 i++;
1707                 if (nla_put_u32(msg, i, NL80211_CMD_SET_WIPHY_NETNS))
1708                         goto nla_put_failure;
1709         }
1710         if (rdev->ops->set_monitor_channel || rdev->ops->start_ap ||
1711             rdev->ops->join_mesh) {
1712                 i++;
1713                 if (nla_put_u32(msg, i, NL80211_CMD_SET_CHANNEL))
1714                         goto nla_put_failure;
1715         }
1716         CMD(set_wds_peer, SET_WDS_PEER);
1717         if (rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS) {
1718                 CMD(tdls_mgmt, TDLS_MGMT);
1719                 CMD(tdls_oper, TDLS_OPER);
1720         }
1721         if (rdev->wiphy.max_sched_scan_reqs)
1722                 CMD(sched_scan_start, START_SCHED_SCAN);
1723         CMD(probe_client, PROBE_CLIENT);
1724         CMD(set_noack_map, SET_NOACK_MAP);
1725         if (rdev->wiphy.flags & WIPHY_FLAG_REPORTS_OBSS) {
1726                 i++;
1727                 if (nla_put_u32(msg, i, NL80211_CMD_REGISTER_BEACONS))
1728                         goto nla_put_failure;
1729         }
1730         CMD(start_p2p_device, START_P2P_DEVICE);
1731         CMD(set_mcast_rate, SET_MCAST_RATE);
1732 #ifdef CONFIG_NL80211_TESTMODE
1733         CMD(testmode_cmd, TESTMODE);
1734 #endif
1735
1736         if (rdev->ops->connect || rdev->ops->auth) {
1737                 i++;
1738                 if (nla_put_u32(msg, i, NL80211_CMD_CONNECT))
1739                         goto nla_put_failure;
1740         }
1741
1742         if (rdev->ops->disconnect || rdev->ops->deauth) {
1743                 i++;
1744                 if (nla_put_u32(msg, i, NL80211_CMD_DISCONNECT))
1745                         goto nla_put_failure;
1746         }
1747
1748         return i;
1749  nla_put_failure:
1750         return -ENOBUFS;
1751 }
1752
1753 static int
1754 nl80211_send_pmsr_ftm_capa(const struct cfg80211_pmsr_capabilities *cap,
1755                            struct sk_buff *msg)
1756 {
1757         struct nlattr *ftm;
1758
1759         if (!cap->ftm.supported)
1760                 return 0;
1761
1762         ftm = nla_nest_start_noflag(msg, NL80211_PMSR_TYPE_FTM);
1763         if (!ftm)
1764                 return -ENOBUFS;
1765
1766         if (cap->ftm.asap && nla_put_flag(msg, NL80211_PMSR_FTM_CAPA_ATTR_ASAP))
1767                 return -ENOBUFS;
1768         if (cap->ftm.non_asap &&
1769             nla_put_flag(msg, NL80211_PMSR_FTM_CAPA_ATTR_NON_ASAP))
1770                 return -ENOBUFS;
1771         if (cap->ftm.request_lci &&
1772             nla_put_flag(msg, NL80211_PMSR_FTM_CAPA_ATTR_REQ_LCI))
1773                 return -ENOBUFS;
1774         if (cap->ftm.request_civicloc &&
1775             nla_put_flag(msg, NL80211_PMSR_FTM_CAPA_ATTR_REQ_CIVICLOC))
1776                 return -ENOBUFS;
1777         if (nla_put_u32(msg, NL80211_PMSR_FTM_CAPA_ATTR_PREAMBLES,
1778                         cap->ftm.preambles))
1779                 return -ENOBUFS;
1780         if (nla_put_u32(msg, NL80211_PMSR_FTM_CAPA_ATTR_BANDWIDTHS,
1781                         cap->ftm.bandwidths))
1782                 return -ENOBUFS;
1783         if (cap->ftm.max_bursts_exponent >= 0 &&
1784             nla_put_u32(msg, NL80211_PMSR_FTM_CAPA_ATTR_MAX_BURSTS_EXPONENT,
1785                         cap->ftm.max_bursts_exponent))
1786                 return -ENOBUFS;
1787         if (cap->ftm.max_ftms_per_burst &&
1788             nla_put_u32(msg, NL80211_PMSR_FTM_CAPA_ATTR_MAX_FTMS_PER_BURST,
1789                         cap->ftm.max_ftms_per_burst))
1790                 return -ENOBUFS;
1791
1792         nla_nest_end(msg, ftm);
1793         return 0;
1794 }
1795
1796 static int nl80211_send_pmsr_capa(struct cfg80211_registered_device *rdev,
1797                                   struct sk_buff *msg)
1798 {
1799         const struct cfg80211_pmsr_capabilities *cap = rdev->wiphy.pmsr_capa;
1800         struct nlattr *pmsr, *caps;
1801
1802         if (!cap)
1803                 return 0;
1804
1805         /*
1806          * we don't need to clean up anything here since the caller
1807          * will genlmsg_cancel() if we fail
1808          */
1809
1810         pmsr = nla_nest_start_noflag(msg, NL80211_ATTR_PEER_MEASUREMENTS);
1811         if (!pmsr)
1812                 return -ENOBUFS;
1813
1814         if (nla_put_u32(msg, NL80211_PMSR_ATTR_MAX_PEERS, cap->max_peers))
1815                 return -ENOBUFS;
1816
1817         if (cap->report_ap_tsf &&
1818             nla_put_flag(msg, NL80211_PMSR_ATTR_REPORT_AP_TSF))
1819                 return -ENOBUFS;
1820
1821         if (cap->randomize_mac_addr &&
1822             nla_put_flag(msg, NL80211_PMSR_ATTR_RANDOMIZE_MAC_ADDR))
1823                 return -ENOBUFS;
1824
1825         caps = nla_nest_start_noflag(msg, NL80211_PMSR_ATTR_TYPE_CAPA);
1826         if (!caps)
1827                 return -ENOBUFS;
1828
1829         if (nl80211_send_pmsr_ftm_capa(cap, msg))
1830                 return -ENOBUFS;
1831
1832         nla_nest_end(msg, caps);
1833         nla_nest_end(msg, pmsr);
1834
1835         return 0;
1836 }
1837
1838 struct nl80211_dump_wiphy_state {
1839         s64 filter_wiphy;
1840         long start;
1841         long split_start, band_start, chan_start, capa_start;
1842         bool split;
1843 };
1844
1845 static int nl80211_send_wiphy(struct cfg80211_registered_device *rdev,
1846                               enum nl80211_commands cmd,
1847                               struct sk_buff *msg, u32 portid, u32 seq,
1848                               int flags, struct nl80211_dump_wiphy_state *state)
1849 {
1850         void *hdr;
1851         struct nlattr *nl_bands, *nl_band;
1852         struct nlattr *nl_freqs, *nl_freq;
1853         struct nlattr *nl_cmds;
1854         enum nl80211_band band;
1855         struct ieee80211_channel *chan;
1856         int i;
1857         const struct ieee80211_txrx_stypes *mgmt_stypes =
1858                                 rdev->wiphy.mgmt_stypes;
1859         u32 features;
1860
1861         hdr = nl80211hdr_put(msg, portid, seq, flags, cmd);
1862         if (!hdr)
1863                 return -ENOBUFS;
1864
1865         if (WARN_ON(!state))
1866                 return -EINVAL;
1867
1868         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
1869             nla_put_string(msg, NL80211_ATTR_WIPHY_NAME,
1870                            wiphy_name(&rdev->wiphy)) ||
1871             nla_put_u32(msg, NL80211_ATTR_GENERATION,
1872                         cfg80211_rdev_list_generation))
1873                 goto nla_put_failure;
1874
1875         if (cmd != NL80211_CMD_NEW_WIPHY)
1876                 goto finish;
1877
1878         switch (state->split_start) {
1879         case 0:
1880                 if (nla_put_u8(msg, NL80211_ATTR_WIPHY_RETRY_SHORT,
1881                                rdev->wiphy.retry_short) ||
1882                     nla_put_u8(msg, NL80211_ATTR_WIPHY_RETRY_LONG,
1883                                rdev->wiphy.retry_long) ||
1884                     nla_put_u32(msg, NL80211_ATTR_WIPHY_FRAG_THRESHOLD,
1885                                 rdev->wiphy.frag_threshold) ||
1886                     nla_put_u32(msg, NL80211_ATTR_WIPHY_RTS_THRESHOLD,
1887                                 rdev->wiphy.rts_threshold) ||
1888                     nla_put_u8(msg, NL80211_ATTR_WIPHY_COVERAGE_CLASS,
1889                                rdev->wiphy.coverage_class) ||
1890                     nla_put_u8(msg, NL80211_ATTR_MAX_NUM_SCAN_SSIDS,
1891                                rdev->wiphy.max_scan_ssids) ||
1892                     nla_put_u8(msg, NL80211_ATTR_MAX_NUM_SCHED_SCAN_SSIDS,
1893                                rdev->wiphy.max_sched_scan_ssids) ||
1894                     nla_put_u16(msg, NL80211_ATTR_MAX_SCAN_IE_LEN,
1895                                 rdev->wiphy.max_scan_ie_len) ||
1896                     nla_put_u16(msg, NL80211_ATTR_MAX_SCHED_SCAN_IE_LEN,
1897                                 rdev->wiphy.max_sched_scan_ie_len) ||
1898                     nla_put_u8(msg, NL80211_ATTR_MAX_MATCH_SETS,
1899                                rdev->wiphy.max_match_sets) ||
1900                     nla_put_u32(msg, NL80211_ATTR_MAX_NUM_SCHED_SCAN_PLANS,
1901                                 rdev->wiphy.max_sched_scan_plans) ||
1902                     nla_put_u32(msg, NL80211_ATTR_MAX_SCAN_PLAN_INTERVAL,
1903                                 rdev->wiphy.max_sched_scan_plan_interval) ||
1904                     nla_put_u32(msg, NL80211_ATTR_MAX_SCAN_PLAN_ITERATIONS,
1905                                 rdev->wiphy.max_sched_scan_plan_iterations))
1906                         goto nla_put_failure;
1907
1908                 if ((rdev->wiphy.flags & WIPHY_FLAG_IBSS_RSN) &&
1909                     nla_put_flag(msg, NL80211_ATTR_SUPPORT_IBSS_RSN))
1910                         goto nla_put_failure;
1911                 if ((rdev->wiphy.flags & WIPHY_FLAG_MESH_AUTH) &&
1912                     nla_put_flag(msg, NL80211_ATTR_SUPPORT_MESH_AUTH))
1913                         goto nla_put_failure;
1914                 if ((rdev->wiphy.flags & WIPHY_FLAG_AP_UAPSD) &&
1915                     nla_put_flag(msg, NL80211_ATTR_SUPPORT_AP_UAPSD))
1916                         goto nla_put_failure;
1917                 if ((rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_FW_ROAM) &&
1918                     nla_put_flag(msg, NL80211_ATTR_ROAM_SUPPORT))
1919                         goto nla_put_failure;
1920                 if ((rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS) &&
1921                     nla_put_flag(msg, NL80211_ATTR_TDLS_SUPPORT))
1922                         goto nla_put_failure;
1923                 if ((rdev->wiphy.flags & WIPHY_FLAG_TDLS_EXTERNAL_SETUP) &&
1924                     nla_put_flag(msg, NL80211_ATTR_TDLS_EXTERNAL_SETUP))
1925                         goto nla_put_failure;
1926                 state->split_start++;
1927                 if (state->split)
1928                         break;
1929                 /* fall through */
1930         case 1:
1931                 if (nla_put(msg, NL80211_ATTR_CIPHER_SUITES,
1932                             sizeof(u32) * rdev->wiphy.n_cipher_suites,
1933                             rdev->wiphy.cipher_suites))
1934                         goto nla_put_failure;
1935
1936                 if (nla_put_u8(msg, NL80211_ATTR_MAX_NUM_PMKIDS,
1937                                rdev->wiphy.max_num_pmkids))
1938                         goto nla_put_failure;
1939
1940                 if ((rdev->wiphy.flags & WIPHY_FLAG_CONTROL_PORT_PROTOCOL) &&
1941                     nla_put_flag(msg, NL80211_ATTR_CONTROL_PORT_ETHERTYPE))
1942                         goto nla_put_failure;
1943
1944                 if (nla_put_u32(msg, NL80211_ATTR_WIPHY_ANTENNA_AVAIL_TX,
1945                                 rdev->wiphy.available_antennas_tx) ||
1946                     nla_put_u32(msg, NL80211_ATTR_WIPHY_ANTENNA_AVAIL_RX,
1947                                 rdev->wiphy.available_antennas_rx))
1948                         goto nla_put_failure;
1949
1950                 if ((rdev->wiphy.flags & WIPHY_FLAG_AP_PROBE_RESP_OFFLOAD) &&
1951                     nla_put_u32(msg, NL80211_ATTR_PROBE_RESP_OFFLOAD,
1952                                 rdev->wiphy.probe_resp_offload))
1953                         goto nla_put_failure;
1954
1955                 if ((rdev->wiphy.available_antennas_tx ||
1956                      rdev->wiphy.available_antennas_rx) &&
1957                     rdev->ops->get_antenna) {
1958                         u32 tx_ant = 0, rx_ant = 0;
1959                         int res;
1960
1961                         res = rdev_get_antenna(rdev, &tx_ant, &rx_ant);
1962                         if (!res) {
1963                                 if (nla_put_u32(msg,
1964                                                 NL80211_ATTR_WIPHY_ANTENNA_TX,
1965                                                 tx_ant) ||
1966                                     nla_put_u32(msg,
1967                                                 NL80211_ATTR_WIPHY_ANTENNA_RX,
1968                                                 rx_ant))
1969                                         goto nla_put_failure;
1970                         }
1971                 }
1972
1973                 state->split_start++;
1974                 if (state->split)
1975                         break;
1976                 /* fall through */
1977         case 2:
1978                 if (nl80211_put_iftypes(msg, NL80211_ATTR_SUPPORTED_IFTYPES,
1979                                         rdev->wiphy.interface_modes))
1980                                 goto nla_put_failure;
1981                 state->split_start++;
1982                 if (state->split)
1983                         break;
1984                 /* fall through */
1985         case 3:
1986                 nl_bands = nla_nest_start_noflag(msg,
1987                                                  NL80211_ATTR_WIPHY_BANDS);
1988                 if (!nl_bands)
1989                         goto nla_put_failure;
1990
1991                 for (band = state->band_start;
1992                      band < NUM_NL80211_BANDS; band++) {
1993                         struct ieee80211_supported_band *sband;
1994
1995                         sband = rdev->wiphy.bands[band];
1996
1997                         if (!sband)
1998                                 continue;
1999
2000                         nl_band = nla_nest_start_noflag(msg, band);
2001                         if (!nl_band)
2002                                 goto nla_put_failure;
2003
2004                         switch (state->chan_start) {
2005                         case 0:
2006                                 if (nl80211_send_band_rateinfo(msg, sband))
2007                                         goto nla_put_failure;
2008                                 state->chan_start++;
2009                                 if (state->split)
2010                                         break;
2011                                 /* fall through */
2012                         default:
2013                                 /* add frequencies */
2014                                 nl_freqs = nla_nest_start_noflag(msg,
2015                                                                  NL80211_BAND_ATTR_FREQS);
2016                                 if (!nl_freqs)
2017                                         goto nla_put_failure;
2018
2019                                 for (i = state->chan_start - 1;
2020                                      i < sband->n_channels;
2021                                      i++) {
2022                                         nl_freq = nla_nest_start_noflag(msg,
2023                                                                         i);
2024                                         if (!nl_freq)
2025                                                 goto nla_put_failure;
2026
2027                                         chan = &sband->channels[i];
2028
2029                                         if (nl80211_msg_put_channel(
2030                                                         msg, &rdev->wiphy, chan,
2031                                                         state->split))
2032                                                 goto nla_put_failure;
2033
2034                                         nla_nest_end(msg, nl_freq);
2035                                         if (state->split)
2036                                                 break;
2037                                 }
2038                                 if (i < sband->n_channels)
2039                                         state->chan_start = i + 2;
2040                                 else
2041                                         state->chan_start = 0;
2042                                 nla_nest_end(msg, nl_freqs);
2043                         }
2044
2045                         nla_nest_end(msg, nl_band);
2046
2047                         if (state->split) {
2048                                 /* start again here */
2049                                 if (state->chan_start)
2050                                         band--;
2051                                 break;
2052                         }
2053                 }
2054                 nla_nest_end(msg, nl_bands);
2055
2056                 if (band < NUM_NL80211_BANDS)
2057                         state->band_start = band + 1;
2058                 else
2059                         state->band_start = 0;
2060
2061                 /* if bands & channels are done, continue outside */
2062                 if (state->band_start == 0 && state->chan_start == 0)
2063                         state->split_start++;
2064                 if (state->split)
2065                         break;
2066                 /* fall through */
2067         case 4:
2068                 nl_cmds = nla_nest_start_noflag(msg,
2069                                                 NL80211_ATTR_SUPPORTED_COMMANDS);
2070                 if (!nl_cmds)
2071                         goto nla_put_failure;
2072
2073                 i = nl80211_add_commands_unsplit(rdev, msg);
2074                 if (i < 0)
2075                         goto nla_put_failure;
2076                 if (state->split) {
2077                         CMD(crit_proto_start, CRIT_PROTOCOL_START);
2078                         CMD(crit_proto_stop, CRIT_PROTOCOL_STOP);
2079                         if (rdev->wiphy.flags & WIPHY_FLAG_HAS_CHANNEL_SWITCH)
2080                                 CMD(channel_switch, CHANNEL_SWITCH);
2081                         CMD(set_qos_map, SET_QOS_MAP);
2082                         if (rdev->wiphy.features &
2083                                         NL80211_FEATURE_SUPPORTS_WMM_ADMISSION)
2084                                 CMD(add_tx_ts, ADD_TX_TS);
2085                         CMD(set_multicast_to_unicast, SET_MULTICAST_TO_UNICAST);
2086                         CMD(update_connect_params, UPDATE_CONNECT_PARAMS);
2087                 }
2088 #undef CMD
2089
2090                 nla_nest_end(msg, nl_cmds);
2091                 state->split_start++;
2092                 if (state->split)
2093                         break;
2094                 /* fall through */
2095         case 5:
2096                 if (rdev->ops->remain_on_channel &&
2097                     (rdev->wiphy.flags & WIPHY_FLAG_HAS_REMAIN_ON_CHANNEL) &&
2098                     nla_put_u32(msg,
2099                                 NL80211_ATTR_MAX_REMAIN_ON_CHANNEL_DURATION,
2100                                 rdev->wiphy.max_remain_on_channel_duration))
2101                         goto nla_put_failure;
2102
2103                 if ((rdev->wiphy.flags & WIPHY_FLAG_OFFCHAN_TX) &&
2104                     nla_put_flag(msg, NL80211_ATTR_OFFCHANNEL_TX_OK))
2105                         goto nla_put_failure;
2106
2107                 if (nl80211_send_mgmt_stypes(msg, mgmt_stypes))
2108                         goto nla_put_failure;
2109                 state->split_start++;
2110                 if (state->split)
2111                         break;
2112                 /* fall through */
2113         case 6:
2114 #ifdef CONFIG_PM
2115                 if (nl80211_send_wowlan(msg, rdev, state->split))
2116                         goto nla_put_failure;
2117                 state->split_start++;
2118                 if (state->split)
2119                         break;
2120 #else
2121                 state->split_start++;
2122 #endif
2123                 /* fall through */
2124         case 7:
2125                 if (nl80211_put_iftypes(msg, NL80211_ATTR_SOFTWARE_IFTYPES,
2126                                         rdev->wiphy.software_iftypes))
2127                         goto nla_put_failure;
2128
2129                 if (nl80211_put_iface_combinations(&rdev->wiphy, msg,
2130                                                    state->split))
2131                         goto nla_put_failure;
2132
2133                 state->split_start++;
2134                 if (state->split)
2135                         break;
2136                 /* fall through */
2137         case 8:
2138                 if ((rdev->wiphy.flags & WIPHY_FLAG_HAVE_AP_SME) &&
2139                     nla_put_u32(msg, NL80211_ATTR_DEVICE_AP_SME,
2140                                 rdev->wiphy.ap_sme_capa))
2141                         goto nla_put_failure;
2142
2143                 features = rdev->wiphy.features;
2144                 /*
2145                  * We can only add the per-channel limit information if the
2146                  * dump is split, otherwise it makes it too big. Therefore
2147                  * only advertise it in that case.
2148                  */
2149                 if (state->split)
2150                         features |= NL80211_FEATURE_ADVERTISE_CHAN_LIMITS;
2151                 if (nla_put_u32(msg, NL80211_ATTR_FEATURE_FLAGS, features))
2152                         goto nla_put_failure;
2153
2154                 if (rdev->wiphy.ht_capa_mod_mask &&
2155                     nla_put(msg, NL80211_ATTR_HT_CAPABILITY_MASK,
2156                             sizeof(*rdev->wiphy.ht_capa_mod_mask),
2157                             rdev->wiphy.ht_capa_mod_mask))
2158                         goto nla_put_failure;
2159
2160                 if (rdev->wiphy.flags & WIPHY_FLAG_HAVE_AP_SME &&
2161                     rdev->wiphy.max_acl_mac_addrs &&
2162                     nla_put_u32(msg, NL80211_ATTR_MAC_ACL_MAX,
2163                                 rdev->wiphy.max_acl_mac_addrs))
2164                         goto nla_put_failure;
2165
2166                 /*
2167                  * Any information below this point is only available to
2168                  * applications that can deal with it being split. This
2169                  * helps ensure that newly added capabilities don't break
2170                  * older tools by overrunning their buffers.
2171                  *
2172                  * We still increment split_start so that in the split
2173                  * case we'll continue with more data in the next round,
2174                  * but break unconditionally so unsplit data stops here.
2175                  */
2176                 state->split_start++;
2177                 break;
2178         case 9:
2179                 if (rdev->wiphy.extended_capabilities &&
2180                     (nla_put(msg, NL80211_ATTR_EXT_CAPA,
2181                              rdev->wiphy.extended_capabilities_len,
2182                              rdev->wiphy.extended_capabilities) ||
2183                      nla_put(msg, NL80211_ATTR_EXT_CAPA_MASK,
2184                              rdev->wiphy.extended_capabilities_len,
2185                              rdev->wiphy.extended_capabilities_mask)))
2186                         goto nla_put_failure;
2187
2188                 if (rdev->wiphy.vht_capa_mod_mask &&
2189                     nla_put(msg, NL80211_ATTR_VHT_CAPABILITY_MASK,
2190                             sizeof(*rdev->wiphy.vht_capa_mod_mask),
2191                             rdev->wiphy.vht_capa_mod_mask))
2192                         goto nla_put_failure;
2193
2194                 if (nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN,
2195                             rdev->wiphy.perm_addr))
2196                         goto nla_put_failure;
2197
2198                 if (!is_zero_ether_addr(rdev->wiphy.addr_mask) &&
2199                     nla_put(msg, NL80211_ATTR_MAC_MASK, ETH_ALEN,
2200                             rdev->wiphy.addr_mask))
2201                         goto nla_put_failure;
2202
2203                 if (rdev->wiphy.n_addresses > 1) {
2204                         void *attr;
2205
2206                         attr = nla_nest_start(msg, NL80211_ATTR_MAC_ADDRS);
2207                         if (!attr)
2208                                 goto nla_put_failure;
2209
2210                         for (i = 0; i < rdev->wiphy.n_addresses; i++)
2211                                 if (nla_put(msg, i + 1, ETH_ALEN,
2212                                             rdev->wiphy.addresses[i].addr))
2213                                         goto nla_put_failure;
2214
2215                         nla_nest_end(msg, attr);
2216                 }
2217
2218                 state->split_start++;
2219                 break;
2220         case 10:
2221                 if (nl80211_send_coalesce(msg, rdev))
2222                         goto nla_put_failure;
2223
2224                 if ((rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_5_10_MHZ) &&
2225                     (nla_put_flag(msg, NL80211_ATTR_SUPPORT_5_MHZ) ||
2226                      nla_put_flag(msg, NL80211_ATTR_SUPPORT_10_MHZ)))
2227                         goto nla_put_failure;
2228
2229                 if (rdev->wiphy.max_ap_assoc_sta &&
2230                     nla_put_u32(msg, NL80211_ATTR_MAX_AP_ASSOC_STA,
2231                                 rdev->wiphy.max_ap_assoc_sta))
2232                         goto nla_put_failure;
2233
2234                 state->split_start++;
2235                 break;
2236         case 11:
2237                 if (rdev->wiphy.n_vendor_commands) {
2238                         const struct nl80211_vendor_cmd_info *info;
2239                         struct nlattr *nested;
2240
2241                         nested = nla_nest_start_noflag(msg,
2242                                                        NL80211_ATTR_VENDOR_DATA);
2243                         if (!nested)
2244                                 goto nla_put_failure;
2245
2246                         for (i = 0; i < rdev->wiphy.n_vendor_commands; i++) {
2247                                 info = &rdev->wiphy.vendor_commands[i].info;
2248                                 if (nla_put(msg, i + 1, sizeof(*info), info))
2249                                         goto nla_put_failure;
2250                         }
2251                         nla_nest_end(msg, nested);
2252                 }
2253
2254                 if (rdev->wiphy.n_vendor_events) {
2255                         const struct nl80211_vendor_cmd_info *info;
2256                         struct nlattr *nested;
2257
2258                         nested = nla_nest_start_noflag(msg,
2259                                                        NL80211_ATTR_VENDOR_EVENTS);
2260                         if (!nested)
2261                                 goto nla_put_failure;
2262
2263                         for (i = 0; i < rdev->wiphy.n_vendor_events; i++) {
2264                                 info = &rdev->wiphy.vendor_events[i];
2265                                 if (nla_put(msg, i + 1, sizeof(*info), info))
2266                                         goto nla_put_failure;
2267                         }
2268                         nla_nest_end(msg, nested);
2269                 }
2270                 state->split_start++;
2271                 break;
2272         case 12:
2273                 if (rdev->wiphy.flags & WIPHY_FLAG_HAS_CHANNEL_SWITCH &&
2274                     nla_put_u8(msg, NL80211_ATTR_MAX_CSA_COUNTERS,
2275                                rdev->wiphy.max_num_csa_counters))
2276                         goto nla_put_failure;
2277
2278                 if (rdev->wiphy.regulatory_flags & REGULATORY_WIPHY_SELF_MANAGED &&
2279                     nla_put_flag(msg, NL80211_ATTR_WIPHY_SELF_MANAGED_REG))
2280                         goto nla_put_failure;
2281
2282                 if (rdev->wiphy.max_sched_scan_reqs &&
2283                     nla_put_u32(msg, NL80211_ATTR_SCHED_SCAN_MAX_REQS,
2284                                 rdev->wiphy.max_sched_scan_reqs))
2285                         goto nla_put_failure;
2286
2287                 if (nla_put(msg, NL80211_ATTR_EXT_FEATURES,
2288                             sizeof(rdev->wiphy.ext_features),
2289                             rdev->wiphy.ext_features))
2290                         goto nla_put_failure;
2291
2292                 if (rdev->wiphy.bss_select_support) {
2293                         struct nlattr *nested;
2294                         u32 bss_select_support = rdev->wiphy.bss_select_support;
2295
2296                         nested = nla_nest_start_noflag(msg,
2297                                                        NL80211_ATTR_BSS_SELECT);
2298                         if (!nested)
2299                                 goto nla_put_failure;
2300
2301                         i = 0;
2302                         while (bss_select_support) {
2303                                 if ((bss_select_support & 1) &&
2304                                     nla_put_flag(msg, i))
2305                                         goto nla_put_failure;
2306                                 i++;
2307                                 bss_select_support >>= 1;
2308                         }
2309                         nla_nest_end(msg, nested);
2310                 }
2311
2312                 state->split_start++;
2313                 break;
2314         case 13:
2315                 if (rdev->wiphy.num_iftype_ext_capab &&
2316                     rdev->wiphy.iftype_ext_capab) {
2317                         struct nlattr *nested_ext_capab, *nested;
2318
2319                         nested = nla_nest_start_noflag(msg,
2320                                                        NL80211_ATTR_IFTYPE_EXT_CAPA);
2321                         if (!nested)
2322                                 goto nla_put_failure;
2323
2324                         for (i = state->capa_start;
2325                              i < rdev->wiphy.num_iftype_ext_capab; i++) {
2326                                 const struct wiphy_iftype_ext_capab *capab;
2327
2328                                 capab = &rdev->wiphy.iftype_ext_capab[i];
2329
2330                                 nested_ext_capab = nla_nest_start_noflag(msg,
2331                                                                          i);
2332                                 if (!nested_ext_capab ||
2333                                     nla_put_u32(msg, NL80211_ATTR_IFTYPE,
2334                                                 capab->iftype) ||
2335                                     nla_put(msg, NL80211_ATTR_EXT_CAPA,
2336                                             capab->extended_capabilities_len,
2337                                             capab->extended_capabilities) ||
2338                                     nla_put(msg, NL80211_ATTR_EXT_CAPA_MASK,
2339                                             capab->extended_capabilities_len,
2340                                             capab->extended_capabilities_mask))
2341                                         goto nla_put_failure;
2342
2343                                 nla_nest_end(msg, nested_ext_capab);
2344                                 if (state->split)
2345                                         break;
2346                         }
2347                         nla_nest_end(msg, nested);
2348                         if (i < rdev->wiphy.num_iftype_ext_capab) {
2349                                 state->capa_start = i + 1;
2350                                 break;
2351                         }
2352                 }
2353
2354                 if (nla_put_u32(msg, NL80211_ATTR_BANDS,
2355                                 rdev->wiphy.nan_supported_bands))
2356                         goto nla_put_failure;
2357
2358                 if (wiphy_ext_feature_isset(&rdev->wiphy,
2359                                             NL80211_EXT_FEATURE_TXQS)) {
2360                         struct cfg80211_txq_stats txqstats = {};
2361                         int res;
2362
2363                         res = rdev_get_txq_stats(rdev, NULL, &txqstats);
2364                         if (!res &&
2365                             !nl80211_put_txq_stats(msg, &txqstats,
2366                                                    NL80211_ATTR_TXQ_STATS))
2367                                 goto nla_put_failure;
2368
2369                         if (nla_put_u32(msg, NL80211_ATTR_TXQ_LIMIT,
2370                                         rdev->wiphy.txq_limit))
2371                                 goto nla_put_failure;
2372                         if (nla_put_u32(msg, NL80211_ATTR_TXQ_MEMORY_LIMIT,
2373                                         rdev->wiphy.txq_memory_limit))
2374                                 goto nla_put_failure;
2375                         if (nla_put_u32(msg, NL80211_ATTR_TXQ_QUANTUM,
2376                                         rdev->wiphy.txq_quantum))
2377                                 goto nla_put_failure;
2378                 }
2379
2380                 state->split_start++;
2381                 break;
2382         case 14:
2383                 if (nl80211_send_pmsr_capa(rdev, msg))
2384                         goto nla_put_failure;
2385
2386                 state->split_start++;
2387                 break;
2388         case 15:
2389                 if (rdev->wiphy.akm_suites &&
2390                     nla_put(msg, NL80211_ATTR_AKM_SUITES,
2391                             sizeof(u32) * rdev->wiphy.n_akm_suites,
2392                             rdev->wiphy.akm_suites))
2393                         goto nla_put_failure;
2394
2395                 /* done */
2396                 state->split_start = 0;
2397                 break;
2398         }
2399  finish:
2400         genlmsg_end(msg, hdr);
2401         return 0;
2402
2403  nla_put_failure:
2404         genlmsg_cancel(msg, hdr);
2405         return -EMSGSIZE;
2406 }
2407
2408 static int nl80211_dump_wiphy_parse(struct sk_buff *skb,
2409                                     struct netlink_callback *cb,
2410                                     struct nl80211_dump_wiphy_state *state)
2411 {
2412         struct nlattr **tb = kcalloc(NUM_NL80211_ATTR, sizeof(*tb), GFP_KERNEL);
2413         int ret;
2414
2415         if (!tb)
2416                 return -ENOMEM;
2417
2418         ret = nlmsg_parse_deprecated(cb->nlh,
2419                                      GENL_HDRLEN + nl80211_fam.hdrsize,
2420                                      tb, nl80211_fam.maxattr,
2421                                      nl80211_policy, NULL);
2422         /* ignore parse errors for backward compatibility */
2423         if (ret) {
2424                 ret = 0;
2425                 goto out;
2426         }
2427
2428         state->split = tb[NL80211_ATTR_SPLIT_WIPHY_DUMP];
2429         if (tb[NL80211_ATTR_WIPHY])
2430                 state->filter_wiphy = nla_get_u32(tb[NL80211_ATTR_WIPHY]);
2431         if (tb[NL80211_ATTR_WDEV])
2432                 state->filter_wiphy = nla_get_u64(tb[NL80211_ATTR_WDEV]) >> 32;
2433         if (tb[NL80211_ATTR_IFINDEX]) {
2434                 struct net_device *netdev;
2435                 struct cfg80211_registered_device *rdev;
2436                 int ifidx = nla_get_u32(tb[NL80211_ATTR_IFINDEX]);
2437
2438                 netdev = __dev_get_by_index(sock_net(skb->sk), ifidx);
2439                 if (!netdev) {
2440                         ret = -ENODEV;
2441                         goto out;
2442                 }
2443                 if (netdev->ieee80211_ptr) {
2444                         rdev = wiphy_to_rdev(
2445                                 netdev->ieee80211_ptr->wiphy);
2446                         state->filter_wiphy = rdev->wiphy_idx;
2447                 }
2448         }
2449
2450         ret = 0;
2451 out:
2452         kfree(tb);
2453         return ret;
2454 }
2455
2456 static int nl80211_dump_wiphy(struct sk_buff *skb, struct netlink_callback *cb)
2457 {
2458         int idx = 0, ret;
2459         struct nl80211_dump_wiphy_state *state = (void *)cb->args[0];
2460         struct cfg80211_registered_device *rdev;
2461
2462         rtnl_lock();
2463         if (!state) {
2464                 state = kzalloc(sizeof(*state), GFP_KERNEL);
2465                 if (!state) {
2466                         rtnl_unlock();
2467                         return -ENOMEM;
2468                 }
2469                 state->filter_wiphy = -1;
2470                 ret = nl80211_dump_wiphy_parse(skb, cb, state);
2471                 if (ret) {
2472                         kfree(state);
2473                         rtnl_unlock();
2474                         return ret;
2475                 }
2476                 cb->args[0] = (long)state;
2477         }
2478
2479         list_for_each_entry(rdev, &cfg80211_rdev_list, list) {
2480                 if (!net_eq(wiphy_net(&rdev->wiphy), sock_net(skb->sk)))
2481                         continue;
2482                 if (++idx <= state->start)
2483                         continue;
2484                 if (state->filter_wiphy != -1 &&
2485                     state->filter_wiphy != rdev->wiphy_idx)
2486                         continue;
2487                 /* attempt to fit multiple wiphy data chunks into the skb */
2488                 do {
2489                         ret = nl80211_send_wiphy(rdev, NL80211_CMD_NEW_WIPHY,
2490                                                  skb,
2491                                                  NETLINK_CB(cb->skb).portid,
2492                                                  cb->nlh->nlmsg_seq,
2493                                                  NLM_F_MULTI, state);
2494                         if (ret < 0) {
2495                                 /*
2496                                  * If sending the wiphy data didn't fit (ENOBUFS
2497                                  * or EMSGSIZE returned), this SKB is still
2498                                  * empty (so it's not too big because another
2499                                  * wiphy dataset is already in the skb) and
2500                                  * we've not tried to adjust the dump allocation
2501                                  * yet ... then adjust the alloc size to be
2502                                  * bigger, and return 1 but with the empty skb.
2503                                  * This results in an empty message being RX'ed
2504                                  * in userspace, but that is ignored.
2505                                  *
2506                                  * We can then retry with the larger buffer.
2507                                  */
2508                                 if ((ret == -ENOBUFS || ret == -EMSGSIZE) &&
2509                                     !skb->len && !state->split &&
2510                                     cb->min_dump_alloc < 4096) {
2511                                         cb->min_dump_alloc = 4096;
2512                                         state->split_start = 0;
2513                                         rtnl_unlock();
2514                                         return 1;
2515                                 }
2516                                 idx--;
2517                                 break;
2518                         }
2519                 } while (state->split_start > 0);
2520                 break;
2521         }
2522         rtnl_unlock();
2523
2524         state->start = idx;
2525
2526         return skb->len;
2527 }
2528
2529 static int nl80211_dump_wiphy_done(struct netlink_callback *cb)
2530 {
2531         kfree((void *)cb->args[0]);
2532         return 0;
2533 }
2534
2535 static int nl80211_get_wiphy(struct sk_buff *skb, struct genl_info *info)
2536 {
2537         struct sk_buff *msg;
2538         struct cfg80211_registered_device *rdev = info->user_ptr[0];
2539         struct nl80211_dump_wiphy_state state = {};
2540
2541         msg = nlmsg_new(4096, GFP_KERNEL);
2542         if (!msg)
2543                 return -ENOMEM;
2544
2545         if (nl80211_send_wiphy(rdev, NL80211_CMD_NEW_WIPHY, msg,
2546                                info->snd_portid, info->snd_seq, 0,
2547                                &state) < 0) {
2548                 nlmsg_free(msg);
2549                 return -ENOBUFS;
2550         }
2551
2552         return genlmsg_reply(msg, info);
2553 }
2554
2555 static const struct nla_policy txq_params_policy[NL80211_TXQ_ATTR_MAX + 1] = {
2556         [NL80211_TXQ_ATTR_QUEUE]                = { .type = NLA_U8 },
2557         [NL80211_TXQ_ATTR_TXOP]                 = { .type = NLA_U16 },
2558         [NL80211_TXQ_ATTR_CWMIN]                = { .type = NLA_U16 },
2559         [NL80211_TXQ_ATTR_CWMAX]                = { .type = NLA_U16 },
2560         [NL80211_TXQ_ATTR_AIFS]                 = { .type = NLA_U8 },
2561 };
2562
2563 static int parse_txq_params(struct nlattr *tb[],
2564                             struct ieee80211_txq_params *txq_params)
2565 {
2566         u8 ac;
2567
2568         if (!tb[NL80211_TXQ_ATTR_AC] || !tb[NL80211_TXQ_ATTR_TXOP] ||
2569             !tb[NL80211_TXQ_ATTR_CWMIN] || !tb[NL80211_TXQ_ATTR_CWMAX] ||
2570             !tb[NL80211_TXQ_ATTR_AIFS])
2571                 return -EINVAL;
2572
2573         ac = nla_get_u8(tb[NL80211_TXQ_ATTR_AC]);
2574         txq_params->txop = nla_get_u16(tb[NL80211_TXQ_ATTR_TXOP]);
2575         txq_params->cwmin = nla_get_u16(tb[NL80211_TXQ_ATTR_CWMIN]);
2576         txq_params->cwmax = nla_get_u16(tb[NL80211_TXQ_ATTR_CWMAX]);
2577         txq_params->aifs = nla_get_u8(tb[NL80211_TXQ_ATTR_AIFS]);
2578
2579         if (ac >= NL80211_NUM_ACS)
2580                 return -EINVAL;
2581         txq_params->ac = array_index_nospec(ac, NL80211_NUM_ACS);
2582         return 0;
2583 }
2584
2585 static bool nl80211_can_set_dev_channel(struct wireless_dev *wdev)
2586 {
2587         /*
2588          * You can only set the channel explicitly for WDS interfaces,
2589          * all others have their channel managed via their respective
2590          * "establish a connection" command (connect, join, ...)
2591          *
2592          * For AP/GO and mesh mode, the channel can be set with the
2593          * channel userspace API, but is only stored and passed to the
2594          * low-level driver when the AP starts or the mesh is joined.
2595          * This is for backward compatibility, userspace can also give
2596          * the channel in the start-ap or join-mesh commands instead.
2597          *
2598          * Monitors are special as they are normally slaved to
2599          * whatever else is going on, so they have their own special
2600          * operation to set the monitor channel if possible.
2601          */
2602         return !wdev ||
2603                 wdev->iftype == NL80211_IFTYPE_AP ||
2604                 wdev->iftype == NL80211_IFTYPE_MESH_POINT ||
2605                 wdev->iftype == NL80211_IFTYPE_MONITOR ||
2606                 wdev->iftype == NL80211_IFTYPE_P2P_GO;
2607 }
2608
2609 int nl80211_parse_chandef(struct cfg80211_registered_device *rdev,
2610                           struct genl_info *info,
2611                           struct cfg80211_chan_def *chandef)
2612 {
2613         struct netlink_ext_ack *extack = info->extack;
2614         struct nlattr **attrs = info->attrs;
2615         u32 control_freq;
2616
2617         if (!attrs[NL80211_ATTR_WIPHY_FREQ])
2618                 return -EINVAL;
2619
2620         control_freq = nla_get_u32(attrs[NL80211_ATTR_WIPHY_FREQ]);
2621
2622         chandef->chan = ieee80211_get_channel(&rdev->wiphy, control_freq);
2623         chandef->width = NL80211_CHAN_WIDTH_20_NOHT;
2624         chandef->center_freq1 = control_freq;
2625         chandef->center_freq2 = 0;
2626
2627         /* Primary channel not allowed */
2628         if (!chandef->chan || chandef->chan->flags & IEEE80211_CHAN_DISABLED) {
2629                 NL_SET_ERR_MSG_ATTR(extack, attrs[NL80211_ATTR_WIPHY_FREQ],
2630                                     "Channel is disabled");
2631                 return -EINVAL;
2632         }
2633
2634         if (attrs[NL80211_ATTR_WIPHY_CHANNEL_TYPE]) {
2635                 enum nl80211_channel_type chantype;
2636
2637                 chantype = nla_get_u32(attrs[NL80211_ATTR_WIPHY_CHANNEL_TYPE]);
2638
2639                 switch (chantype) {
2640                 case NL80211_CHAN_NO_HT:
2641                 case NL80211_CHAN_HT20:
2642                 case NL80211_CHAN_HT40PLUS:
2643                 case NL80211_CHAN_HT40MINUS:
2644                         cfg80211_chandef_create(chandef, chandef->chan,
2645                                                 chantype);
2646                         /* user input for center_freq is incorrect */
2647                         if (attrs[NL80211_ATTR_CENTER_FREQ1] &&
2648                             chandef->center_freq1 != nla_get_u32(attrs[NL80211_ATTR_CENTER_FREQ1])) {
2649                                 NL_SET_ERR_MSG_ATTR(extack,
2650                                                     attrs[NL80211_ATTR_CENTER_FREQ1],
2651                                                     "bad center frequency 1");
2652                                 return -EINVAL;
2653                         }
2654                         /* center_freq2 must be zero */
2655                         if (attrs[NL80211_ATTR_CENTER_FREQ2] &&
2656                             nla_get_u32(attrs[NL80211_ATTR_CENTER_FREQ2])) {
2657                                 NL_SET_ERR_MSG_ATTR(extack,
2658                                                     attrs[NL80211_ATTR_CENTER_FREQ2],
2659                                                     "center frequency 2 can't be used");
2660                                 return -EINVAL;
2661                         }
2662                         break;
2663                 default:
2664                         NL_SET_ERR_MSG_ATTR(extack,
2665                                             attrs[NL80211_ATTR_WIPHY_CHANNEL_TYPE],
2666                                             "invalid channel type");
2667                         return -EINVAL;
2668                 }
2669         } else if (attrs[NL80211_ATTR_CHANNEL_WIDTH]) {
2670                 chandef->width =
2671                         nla_get_u32(attrs[NL80211_ATTR_CHANNEL_WIDTH]);
2672                 if (attrs[NL80211_ATTR_CENTER_FREQ1])
2673                         chandef->center_freq1 =
2674                                 nla_get_u32(attrs[NL80211_ATTR_CENTER_FREQ1]);
2675                 if (attrs[NL80211_ATTR_CENTER_FREQ2])
2676                         chandef->center_freq2 =
2677                                 nla_get_u32(attrs[NL80211_ATTR_CENTER_FREQ2]);
2678         }
2679
2680         if (!cfg80211_chandef_valid(chandef)) {
2681                 NL_SET_ERR_MSG(extack, "invalid channel definition");
2682                 return -EINVAL;
2683         }
2684
2685         if (!cfg80211_chandef_usable(&rdev->wiphy, chandef,
2686                                      IEEE80211_CHAN_DISABLED)) {
2687                 NL_SET_ERR_MSG(extack, "(extension) channel is disabled");
2688                 return -EINVAL;
2689         }
2690
2691         if ((chandef->width == NL80211_CHAN_WIDTH_5 ||
2692              chandef->width == NL80211_CHAN_WIDTH_10) &&
2693             !(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_5_10_MHZ)) {
2694                 NL_SET_ERR_MSG(extack, "5/10 MHz not supported");
2695                 return -EINVAL;
2696         }
2697
2698         return 0;
2699 }
2700
2701 static int __nl80211_set_channel(struct cfg80211_registered_device *rdev,
2702                                  struct net_device *dev,
2703                                  struct genl_info *info)
2704 {
2705         struct cfg80211_chan_def chandef;
2706         int result;
2707         enum nl80211_iftype iftype = NL80211_IFTYPE_MONITOR;
2708         struct wireless_dev *wdev = NULL;
2709
2710         if (dev)
2711                 wdev = dev->ieee80211_ptr;
2712         if (!nl80211_can_set_dev_channel(wdev))
2713                 return -EOPNOTSUPP;
2714         if (wdev)
2715                 iftype = wdev->iftype;
2716
2717         result = nl80211_parse_chandef(rdev, info, &chandef);
2718         if (result)
2719                 return result;
2720
2721         switch (iftype) {
2722         case NL80211_IFTYPE_AP:
2723         case NL80211_IFTYPE_P2P_GO:
2724                 if (!cfg80211_reg_can_beacon_relax(&rdev->wiphy, &chandef,
2725                                                    iftype)) {
2726                         result = -EINVAL;
2727                         break;
2728                 }
2729                 if (wdev->beacon_interval) {
2730                         if (!dev || !rdev->ops->set_ap_chanwidth ||
2731                             !(rdev->wiphy.features &
2732                               NL80211_FEATURE_AP_MODE_CHAN_WIDTH_CHANGE)) {
2733                                 result = -EBUSY;
2734                                 break;
2735                         }
2736
2737                         /* Only allow dynamic channel width changes */
2738                         if (chandef.chan != wdev->preset_chandef.chan) {
2739                                 result = -EBUSY;
2740                                 break;
2741                         }
2742                         result = rdev_set_ap_chanwidth(rdev, dev, &chandef);
2743                         if (result)
2744                                 break;
2745                 }
2746                 wdev->preset_chandef = chandef;
2747                 result = 0;
2748                 break;
2749         case NL80211_IFTYPE_MESH_POINT:
2750                 result = cfg80211_set_mesh_channel(rdev, wdev, &chandef);
2751                 break;
2752         case NL80211_IFTYPE_MONITOR:
2753                 result = cfg80211_set_monitor_channel(rdev, &chandef);
2754                 break;
2755         default:
2756                 result = -EINVAL;
2757         }
2758
2759         return result;
2760 }
2761
2762 static int nl80211_set_channel(struct sk_buff *skb, struct genl_info *info)
2763 {
2764         struct cfg80211_registered_device *rdev = info->user_ptr[0];
2765         struct net_device *netdev = info->user_ptr[1];
2766
2767         return __nl80211_set_channel(rdev, netdev, info);
2768 }
2769
2770 static int nl80211_set_wds_peer(struct sk_buff *skb, struct genl_info *info)
2771 {
2772         struct cfg80211_registered_device *rdev = info->user_ptr[0];
2773         struct net_device *dev = info->user_ptr[1];
2774         struct wireless_dev *wdev = dev->ieee80211_ptr;
2775         const u8 *bssid;
2776
2777         if (!info->attrs[NL80211_ATTR_MAC])
2778                 return -EINVAL;
2779
2780         if (netif_running(dev))
2781                 return -EBUSY;
2782
2783         if (!rdev->ops->set_wds_peer)
2784                 return -EOPNOTSUPP;
2785
2786         if (wdev->iftype != NL80211_IFTYPE_WDS)
2787                 return -EOPNOTSUPP;
2788
2789         bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
2790         return rdev_set_wds_peer(rdev, dev, bssid);
2791 }
2792
2793 static int nl80211_set_wiphy(struct sk_buff *skb, struct genl_info *info)
2794 {
2795         struct cfg80211_registered_device *rdev;
2796         struct net_device *netdev = NULL;
2797         struct wireless_dev *wdev;
2798         int result = 0, rem_txq_params = 0;
2799         struct nlattr *nl_txq_params;
2800         u32 changed;
2801         u8 retry_short = 0, retry_long = 0;
2802         u32 frag_threshold = 0, rts_threshold = 0;
2803         u8 coverage_class = 0;
2804         u32 txq_limit = 0, txq_memory_limit = 0, txq_quantum = 0;
2805
2806         ASSERT_RTNL();
2807
2808         /*
2809          * Try to find the wiphy and netdev. Normally this
2810          * function shouldn't need the netdev, but this is
2811          * done for backward compatibility -- previously
2812          * setting the channel was done per wiphy, but now
2813          * it is per netdev. Previous userland like hostapd
2814          * also passed a netdev to set_wiphy, so that it is
2815          * possible to let that go to the right netdev!
2816          */
2817
2818         if (info->attrs[NL80211_ATTR_IFINDEX]) {
2819                 int ifindex = nla_get_u32(info->attrs[NL80211_ATTR_IFINDEX]);
2820
2821                 netdev = __dev_get_by_index(genl_info_net(info), ifindex);
2822                 if (netdev && netdev->ieee80211_ptr)
2823                         rdev = wiphy_to_rdev(netdev->ieee80211_ptr->wiphy);
2824                 else
2825                         netdev = NULL;
2826         }
2827
2828         if (!netdev) {
2829                 rdev = __cfg80211_rdev_from_attrs(genl_info_net(info),
2830                                                   info->attrs);
2831                 if (IS_ERR(rdev))
2832                         return PTR_ERR(rdev);
2833                 wdev = NULL;
2834                 netdev = NULL;
2835                 result = 0;
2836         } else
2837                 wdev = netdev->ieee80211_ptr;
2838
2839         /*
2840          * end workaround code, by now the rdev is available
2841          * and locked, and wdev may or may not be NULL.
2842          */
2843
2844         if (info->attrs[NL80211_ATTR_WIPHY_NAME])
2845                 result = cfg80211_dev_rename(
2846                         rdev, nla_data(info->attrs[NL80211_ATTR_WIPHY_NAME]));
2847
2848         if (result)
2849                 return result;
2850
2851         if (info->attrs[NL80211_ATTR_WIPHY_TXQ_PARAMS]) {
2852                 struct ieee80211_txq_params txq_params;
2853                 struct nlattr *tb[NL80211_TXQ_ATTR_MAX + 1];
2854
2855                 if (!rdev->ops->set_txq_params)
2856                         return -EOPNOTSUPP;
2857
2858                 if (!netdev)
2859                         return -EINVAL;
2860
2861                 if (netdev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
2862                     netdev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
2863                         return -EINVAL;
2864
2865                 if (!netif_running(netdev))
2866                         return -ENETDOWN;
2867
2868                 nla_for_each_nested(nl_txq_params,
2869                                     info->attrs[NL80211_ATTR_WIPHY_TXQ_PARAMS],
2870                                     rem_txq_params) {
2871                         result = nla_parse_nested_deprecated(tb,
2872                                                              NL80211_TXQ_ATTR_MAX,
2873                                                              nl_txq_params,
2874                                                              txq_params_policy,
2875                                                              info->extack);
2876                         if (result)
2877                                 return result;
2878                         result = parse_txq_params(tb, &txq_params);
2879                         if (result)
2880                                 return result;
2881
2882                         result = rdev_set_txq_params(rdev, netdev,
2883                                                      &txq_params);
2884                         if (result)
2885                                 return result;
2886                 }
2887         }
2888
2889         if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
2890                 result = __nl80211_set_channel(
2891                         rdev,
2892                         nl80211_can_set_dev_channel(wdev) ? netdev : NULL,
2893                         info);
2894                 if (result)
2895                         return result;
2896         }
2897
2898         if (info->attrs[NL80211_ATTR_WIPHY_TX_POWER_SETTING]) {
2899                 struct wireless_dev *txp_wdev = wdev;
2900                 enum nl80211_tx_power_setting type;
2901                 int idx, mbm = 0;
2902
2903                 if (!(rdev->wiphy.features & NL80211_FEATURE_VIF_TXPOWER))
2904                         txp_wdev = NULL;
2905
2906                 if (!rdev->ops->set_tx_power)
2907                         return -EOPNOTSUPP;
2908
2909                 idx = NL80211_ATTR_WIPHY_TX_POWER_SETTING;
2910                 type = nla_get_u32(info->attrs[idx]);
2911
2912                 if (!info->attrs[NL80211_ATTR_WIPHY_TX_POWER_LEVEL] &&
2913                     (type != NL80211_TX_POWER_AUTOMATIC))
2914                         return -EINVAL;
2915
2916                 if (type != NL80211_TX_POWER_AUTOMATIC) {
2917                         idx = NL80211_ATTR_WIPHY_TX_POWER_LEVEL;
2918                         mbm = nla_get_u32(info->attrs[idx]);
2919                 }
2920
2921                 result = rdev_set_tx_power(rdev, txp_wdev, type, mbm);
2922                 if (result)
2923                         return result;
2924         }
2925
2926         if (info->attrs[NL80211_ATTR_WIPHY_ANTENNA_TX] &&
2927             info->attrs[NL80211_ATTR_WIPHY_ANTENNA_RX]) {
2928                 u32 tx_ant, rx_ant;
2929
2930                 if ((!rdev->wiphy.available_antennas_tx &&
2931                      !rdev->wiphy.available_antennas_rx) ||
2932                     !rdev->ops->set_antenna)
2933                         return -EOPNOTSUPP;
2934
2935                 tx_ant = nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_ANTENNA_TX]);
2936                 rx_ant = nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_ANTENNA_RX]);
2937
2938                 /* reject antenna configurations which don't match the
2939                  * available antenna masks, except for the "all" mask */
2940                 if ((~tx_ant && (tx_ant & ~rdev->wiphy.available_antennas_tx)) ||
2941                     (~rx_ant && (rx_ant & ~rdev->wiphy.available_antennas_rx)))
2942                         return -EINVAL;
2943
2944                 tx_ant = tx_ant & rdev->wiphy.available_antennas_tx;
2945                 rx_ant = rx_ant & rdev->wiphy.available_antennas_rx;
2946
2947                 result = rdev_set_antenna(rdev, tx_ant, rx_ant);
2948                 if (result)
2949                         return result;
2950         }
2951
2952         changed = 0;
2953
2954         if (info->attrs[NL80211_ATTR_WIPHY_RETRY_SHORT]) {
2955                 retry_short = nla_get_u8(
2956                         info->attrs[NL80211_ATTR_WIPHY_RETRY_SHORT]);
2957
2958                 changed |= WIPHY_PARAM_RETRY_SHORT;
2959         }
2960
2961         if (info->attrs[NL80211_ATTR_WIPHY_RETRY_LONG]) {
2962                 retry_long = nla_get_u8(
2963                         info->attrs[NL80211_ATTR_WIPHY_RETRY_LONG]);
2964
2965                 changed |= WIPHY_PARAM_RETRY_LONG;
2966         }
2967
2968         if (info->attrs[NL80211_ATTR_WIPHY_FRAG_THRESHOLD]) {
2969                 frag_threshold = nla_get_u32(
2970                         info->attrs[NL80211_ATTR_WIPHY_FRAG_THRESHOLD]);
2971                 if (frag_threshold < 256)
2972                         return -EINVAL;
2973
2974                 if (frag_threshold != (u32) -1) {
2975                         /*
2976                          * Fragments (apart from the last one) are required to
2977                          * have even length. Make the fragmentation code
2978                          * simpler by stripping LSB should someone try to use
2979                          * odd threshold value.
2980                          */
2981                         frag_threshold &= ~0x1;
2982                 }
2983                 changed |= WIPHY_PARAM_FRAG_THRESHOLD;
2984         }
2985
2986         if (info->attrs[NL80211_ATTR_WIPHY_RTS_THRESHOLD]) {
2987                 rts_threshold = nla_get_u32(
2988                         info->attrs[NL80211_ATTR_WIPHY_RTS_THRESHOLD]);
2989                 changed |= WIPHY_PARAM_RTS_THRESHOLD;
2990         }
2991
2992         if (info->attrs[NL80211_ATTR_WIPHY_COVERAGE_CLASS]) {
2993                 if (info->attrs[NL80211_ATTR_WIPHY_DYN_ACK])
2994                         return -EINVAL;
2995
2996                 coverage_class = nla_get_u8(
2997                         info->attrs[NL80211_ATTR_WIPHY_COVERAGE_CLASS]);
2998                 changed |= WIPHY_PARAM_COVERAGE_CLASS;
2999         }
3000
3001         if (info->attrs[NL80211_ATTR_WIPHY_DYN_ACK]) {
3002                 if (!(rdev->wiphy.features & NL80211_FEATURE_ACKTO_ESTIMATION))
3003                         return -EOPNOTSUPP;
3004
3005                 changed |= WIPHY_PARAM_DYN_ACK;
3006         }
3007
3008         if (info->attrs[NL80211_ATTR_TXQ_LIMIT]) {
3009                 if (!wiphy_ext_feature_isset(&rdev->wiphy,
3010                                              NL80211_EXT_FEATURE_TXQS))
3011                         return -EOPNOTSUPP;
3012                 txq_limit = nla_get_u32(
3013                         info->attrs[NL80211_ATTR_TXQ_LIMIT]);
3014                 changed |= WIPHY_PARAM_TXQ_LIMIT;
3015         }
3016
3017         if (info->attrs[NL80211_ATTR_TXQ_MEMORY_LIMIT]) {
3018                 if (!wiphy_ext_feature_isset(&rdev->wiphy,
3019                                              NL80211_EXT_FEATURE_TXQS))
3020                         return -EOPNOTSUPP;
3021                 txq_memory_limit = nla_get_u32(
3022                         info->attrs[NL80211_ATTR_TXQ_MEMORY_LIMIT]);
3023                 changed |= WIPHY_PARAM_TXQ_MEMORY_LIMIT;
3024         }
3025
3026         if (info->attrs[NL80211_ATTR_TXQ_QUANTUM]) {
3027                 if (!wiphy_ext_feature_isset(&rdev->wiphy,
3028                                              NL80211_EXT_FEATURE_TXQS))
3029                         return -EOPNOTSUPP;
3030                 txq_quantum = nla_get_u32(
3031                         info->attrs[NL80211_ATTR_TXQ_QUANTUM]);
3032                 changed |= WIPHY_PARAM_TXQ_QUANTUM;
3033         }
3034
3035         if (changed) {
3036                 u8 old_retry_short, old_retry_long;
3037                 u32 old_frag_threshold, old_rts_threshold;
3038                 u8 old_coverage_class;
3039                 u32 old_txq_limit, old_txq_memory_limit, old_txq_quantum;
3040
3041                 if (!rdev->ops->set_wiphy_params)
3042                         return -EOPNOTSUPP;
3043
3044                 old_retry_short = rdev->wiphy.retry_short;
3045                 old_retry_long = rdev->wiphy.retry_long;
3046                 old_frag_threshold = rdev->wiphy.frag_threshold;
3047                 old_rts_threshold = rdev->wiphy.rts_threshold;
3048                 old_coverage_class = rdev->wiphy.coverage_class;
3049                 old_txq_limit = rdev->wiphy.txq_limit;
3050                 old_txq_memory_limit = rdev->wiphy.txq_memory_limit;
3051                 old_txq_quantum = rdev->wiphy.txq_quantum;
3052
3053                 if (changed & WIPHY_PARAM_RETRY_SHORT)
3054                         rdev->wiphy.retry_short = retry_short;
3055                 if (changed & WIPHY_PARAM_RETRY_LONG)
3056                         rdev->wiphy.retry_long = retry_long;
3057                 if (changed & WIPHY_PARAM_FRAG_THRESHOLD)
3058                         rdev->wiphy.frag_threshold = frag_threshold;
3059                 if (changed & WIPHY_PARAM_RTS_THRESHOLD)
3060                         rdev->wiphy.rts_threshold = rts_threshold;
3061                 if (changed & WIPHY_PARAM_COVERAGE_CLASS)
3062                         rdev->wiphy.coverage_class = coverage_class;
3063                 if (changed & WIPHY_PARAM_TXQ_LIMIT)
3064                         rdev->wiphy.txq_limit = txq_limit;
3065                 if (changed & WIPHY_PARAM_TXQ_MEMORY_LIMIT)
3066                         rdev->wiphy.txq_memory_limit = txq_memory_limit;
3067                 if (changed & WIPHY_PARAM_TXQ_QUANTUM)
3068                         rdev->wiphy.txq_quantum = txq_quantum;
3069
3070                 result = rdev_set_wiphy_params(rdev, changed);
3071                 if (result) {
3072                         rdev->wiphy.retry_short = old_retry_short;
3073                         rdev->wiphy.retry_long = old_retry_long;
3074                         rdev->wiphy.frag_threshold = old_frag_threshold;
3075                         rdev->wiphy.rts_threshold = old_rts_threshold;
3076                         rdev->wiphy.coverage_class = old_coverage_class;
3077                         rdev->wiphy.txq_limit = old_txq_limit;
3078                         rdev->wiphy.txq_memory_limit = old_txq_memory_limit;
3079                         rdev->wiphy.txq_quantum = old_txq_quantum;
3080                         return result;
3081                 }
3082         }
3083         return 0;
3084 }
3085
3086 static int nl80211_send_chandef(struct sk_buff *msg,
3087                                 const struct cfg80211_chan_def *chandef)
3088 {
3089         if (WARN_ON(!cfg80211_chandef_valid(chandef)))
3090                 return -EINVAL;
3091
3092         if (nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ,
3093                         chandef->chan->center_freq))
3094                 return -ENOBUFS;
3095         switch (chandef->width) {
3096         case NL80211_CHAN_WIDTH_20_NOHT:
3097         case NL80211_CHAN_WIDTH_20:
3098         case NL80211_CHAN_WIDTH_40:
3099                 if (nla_put_u32(msg, NL80211_ATTR_WIPHY_CHANNEL_TYPE,
3100                                 cfg80211_get_chandef_type(chandef)))
3101                         return -ENOBUFS;
3102                 break;
3103         default:
3104                 break;
3105         }
3106         if (nla_put_u32(msg, NL80211_ATTR_CHANNEL_WIDTH, chandef->width))
3107                 return -ENOBUFS;
3108         if (nla_put_u32(msg, NL80211_ATTR_CENTER_FREQ1, chandef->center_freq1))
3109                 return -ENOBUFS;
3110         if (chandef->center_freq2 &&
3111             nla_put_u32(msg, NL80211_ATTR_CENTER_FREQ2, chandef->center_freq2))
3112                 return -ENOBUFS;
3113         return 0;
3114 }
3115
3116 static int nl80211_send_iface(struct sk_buff *msg, u32 portid, u32 seq, int flags,
3117                               struct cfg80211_registered_device *rdev,
3118                               struct wireless_dev *wdev,
3119                               enum nl80211_commands cmd)
3120 {
3121         struct net_device *dev = wdev->netdev;
3122         void *hdr;
3123
3124         WARN_ON(cmd != NL80211_CMD_NEW_INTERFACE &&
3125                 cmd != NL80211_CMD_DEL_INTERFACE &&
3126                 cmd != NL80211_CMD_SET_INTERFACE);
3127
3128         hdr = nl80211hdr_put(msg, portid, seq, flags, cmd);
3129         if (!hdr)
3130                 return -1;
3131
3132         if (dev &&
3133             (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
3134              nla_put_string(msg, NL80211_ATTR_IFNAME, dev->name)))
3135                 goto nla_put_failure;
3136
3137         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
3138             nla_put_u32(msg, NL80211_ATTR_IFTYPE, wdev->iftype) ||
3139             nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
3140                               NL80211_ATTR_PAD) ||
3141             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, wdev_address(wdev)) ||
3142             nla_put_u32(msg, NL80211_ATTR_GENERATION,
3143                         rdev->devlist_generation ^
3144                         (cfg80211_rdev_list_generation << 2)) ||
3145             nla_put_u8(msg, NL80211_ATTR_4ADDR, wdev->use_4addr))
3146                 goto nla_put_failure;
3147
3148         if (rdev->ops->get_channel) {
3149                 int ret;
3150                 struct cfg80211_chan_def chandef;
3151
3152                 ret = rdev_get_channel(rdev, wdev, &chandef);
3153                 if (ret == 0) {
3154                         if (nl80211_send_chandef(msg, &chandef))
3155                                 goto nla_put_failure;
3156                 }
3157         }
3158
3159         if (rdev->ops->get_tx_power) {
3160                 int dbm, ret;
3161
3162                 ret = rdev_get_tx_power(rdev, wdev, &dbm);
3163                 if (ret == 0 &&
3164                     nla_put_u32(msg, NL80211_ATTR_WIPHY_TX_POWER_LEVEL,
3165                                 DBM_TO_MBM(dbm)))
3166                         goto nla_put_failure;
3167         }
3168
3169         wdev_lock(wdev);
3170         switch (wdev->iftype) {
3171         case NL80211_IFTYPE_AP:
3172                 if (wdev->ssid_len &&
3173                     nla_put(msg, NL80211_ATTR_SSID, wdev->ssid_len, wdev->ssid))
3174                         goto nla_put_failure_locked;
3175                 break;
3176         case NL80211_IFTYPE_STATION:
3177         case NL80211_IFTYPE_P2P_CLIENT:
3178         case NL80211_IFTYPE_ADHOC: {
3179                 const u8 *ssid_ie;
3180                 if (!wdev->current_bss)
3181                         break;
3182                 rcu_read_lock();
3183                 ssid_ie = ieee80211_bss_get_ie(&wdev->current_bss->pub,
3184                                                WLAN_EID_SSID);
3185                 if (ssid_ie &&
3186                     nla_put(msg, NL80211_ATTR_SSID, ssid_ie[1], ssid_ie + 2))
3187                         goto nla_put_failure_rcu_locked;
3188                 rcu_read_unlock();
3189                 break;
3190                 }
3191         default:
3192                 /* nothing */
3193                 break;
3194         }
3195         wdev_unlock(wdev);
3196
3197         if (rdev->ops->get_txq_stats) {
3198                 struct cfg80211_txq_stats txqstats = {};
3199                 int ret = rdev_get_txq_stats(rdev, wdev, &txqstats);
3200
3201                 if (ret == 0 &&
3202                     !nl80211_put_txq_stats(msg, &txqstats,
3203                                            NL80211_ATTR_TXQ_STATS))
3204                         goto nla_put_failure;
3205         }
3206
3207         genlmsg_end(msg, hdr);
3208         return 0;
3209
3210  nla_put_failure_rcu_locked:
3211         rcu_read_unlock();
3212  nla_put_failure_locked:
3213         wdev_unlock(wdev);
3214  nla_put_failure:
3215         genlmsg_cancel(msg, hdr);
3216         return -EMSGSIZE;
3217 }
3218
3219 static int nl80211_dump_interface(struct sk_buff *skb, struct netlink_callback *cb)
3220 {
3221         int wp_idx = 0;
3222         int if_idx = 0;
3223         int wp_start = cb->args[0];
3224         int if_start = cb->args[1];
3225         int filter_wiphy = -1;
3226         struct cfg80211_registered_device *rdev;
3227         struct wireless_dev *wdev;
3228         int ret;
3229
3230         rtnl_lock();
3231         if (!cb->args[2]) {
3232                 struct nl80211_dump_wiphy_state state = {
3233                         .filter_wiphy = -1,
3234                 };
3235
3236                 ret = nl80211_dump_wiphy_parse(skb, cb, &state);
3237                 if (ret)
3238                         goto out_unlock;
3239
3240                 filter_wiphy = state.filter_wiphy;
3241
3242                 /*
3243                  * if filtering, set cb->args[2] to +1 since 0 is the default
3244                  * value needed to determine that parsing is necessary.
3245                  */
3246                 if (filter_wiphy >= 0)
3247                         cb->args[2] = filter_wiphy + 1;
3248                 else
3249                         cb->args[2] = -1;
3250         } else if (cb->args[2] > 0) {
3251                 filter_wiphy = cb->args[2] - 1;
3252         }
3253
3254         list_for_each_entry(rdev, &cfg80211_rdev_list, list) {
3255                 if (!net_eq(wiphy_net(&rdev->wiphy), sock_net(skb->sk)))
3256                         continue;
3257                 if (wp_idx < wp_start) {
3258                         wp_idx++;
3259                         continue;
3260                 }
3261
3262                 if (filter_wiphy >= 0 && filter_wiphy != rdev->wiphy_idx)
3263                         continue;
3264
3265                 if_idx = 0;
3266
3267                 list_for_each_entry(wdev, &rdev->wiphy.wdev_list, list) {
3268                         if (if_idx < if_start) {
3269                                 if_idx++;
3270                                 continue;
3271                         }
3272                         if (nl80211_send_iface(skb, NETLINK_CB(cb->skb).portid,
3273                                                cb->nlh->nlmsg_seq, NLM_F_MULTI,
3274                                                rdev, wdev,
3275                                                NL80211_CMD_NEW_INTERFACE) < 0) {
3276                                 goto out;
3277                         }
3278                         if_idx++;
3279                 }
3280
3281                 wp_idx++;
3282         }
3283  out:
3284         cb->args[0] = wp_idx;
3285         cb->args[1] = if_idx;
3286
3287         ret = skb->len;
3288  out_unlock:
3289         rtnl_unlock();
3290
3291         return ret;
3292 }
3293
3294 static int nl80211_get_interface(struct sk_buff *skb, struct genl_info *info)
3295 {
3296         struct sk_buff *msg;
3297         struct cfg80211_registered_device *rdev = info->user_ptr[0];
3298         struct wireless_dev *wdev = info->user_ptr[1];
3299
3300         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
3301         if (!msg)
3302                 return -ENOMEM;
3303
3304         if (nl80211_send_iface(msg, info->snd_portid, info->snd_seq, 0,
3305                                rdev, wdev, NL80211_CMD_NEW_INTERFACE) < 0) {
3306                 nlmsg_free(msg);
3307                 return -ENOBUFS;
3308         }
3309
3310         return genlmsg_reply(msg, info);
3311 }
3312
3313 static const struct nla_policy mntr_flags_policy[NL80211_MNTR_FLAG_MAX + 1] = {
3314         [NL80211_MNTR_FLAG_FCSFAIL] = { .type = NLA_FLAG },
3315         [NL80211_MNTR_FLAG_PLCPFAIL] = { .type = NLA_FLAG },
3316         [NL80211_MNTR_FLAG_CONTROL] = { .type = NLA_FLAG },
3317         [NL80211_MNTR_FLAG_OTHER_BSS] = { .type = NLA_FLAG },
3318         [NL80211_MNTR_FLAG_COOK_FRAMES] = { .type = NLA_FLAG },
3319         [NL80211_MNTR_FLAG_ACTIVE] = { .type = NLA_FLAG },
3320 };
3321
3322 static int parse_monitor_flags(struct nlattr *nla, u32 *mntrflags)
3323 {
3324         struct nlattr *flags[NL80211_MNTR_FLAG_MAX + 1];
3325         int flag;
3326
3327         *mntrflags = 0;
3328
3329         if (!nla)
3330                 return -EINVAL;
3331
3332         if (nla_parse_nested_deprecated(flags, NL80211_MNTR_FLAG_MAX, nla, mntr_flags_policy, NULL))
3333                 return -EINVAL;
3334
3335         for (flag = 1; flag <= NL80211_MNTR_FLAG_MAX; flag++)
3336                 if (flags[flag])
3337                         *mntrflags |= (1<<flag);
3338
3339         *mntrflags |= MONITOR_FLAG_CHANGED;
3340
3341         return 0;
3342 }
3343
3344 static int nl80211_parse_mon_options(struct cfg80211_registered_device *rdev,
3345                                      enum nl80211_iftype type,
3346                                      struct genl_info *info,
3347                                      struct vif_params *params)
3348 {
3349         bool change = false;
3350         int err;
3351
3352         if (info->attrs[NL80211_ATTR_MNTR_FLAGS]) {
3353                 if (type != NL80211_IFTYPE_MONITOR)
3354                         return -EINVAL;
3355
3356                 err = parse_monitor_flags(info->attrs[NL80211_ATTR_MNTR_FLAGS],
3357                                           &params->flags);
3358                 if (err)
3359                         return err;
3360
3361                 change = true;
3362         }
3363
3364         if (params->flags & MONITOR_FLAG_ACTIVE &&
3365             !(rdev->wiphy.features & NL80211_FEATURE_ACTIVE_MONITOR))
3366                 return -EOPNOTSUPP;
3367
3368         if (info->attrs[NL80211_ATTR_MU_MIMO_GROUP_DATA]) {
3369                 const u8 *mumimo_groups;
3370                 u32 cap_flag = NL80211_EXT_FEATURE_MU_MIMO_AIR_SNIFFER;
3371
3372                 if (type != NL80211_IFTYPE_MONITOR)
3373                         return -EINVAL;
3374
3375                 if (!wiphy_ext_feature_isset(&rdev->wiphy, cap_flag))
3376                         return -EOPNOTSUPP;
3377
3378                 mumimo_groups =
3379                         nla_data(info->attrs[NL80211_ATTR_MU_MIMO_GROUP_DATA]);
3380
3381                 /* bits 0 and 63 are reserved and must be zero */
3382                 if ((mumimo_groups[0] & BIT(0)) ||
3383                     (mumimo_groups[VHT_MUMIMO_GROUPS_DATA_LEN - 1] & BIT(7)))
3384                         return -EINVAL;
3385
3386                 params->vht_mumimo_groups = mumimo_groups;
3387                 change = true;
3388         }
3389
3390         if (info->attrs[NL80211_ATTR_MU_MIMO_FOLLOW_MAC_ADDR]) {
3391                 u32 cap_flag = NL80211_EXT_FEATURE_MU_MIMO_AIR_SNIFFER;
3392
3393                 if (type != NL80211_IFTYPE_MONITOR)
3394                         return -EINVAL;
3395
3396                 if (!wiphy_ext_feature_isset(&rdev->wiphy, cap_flag))
3397                         return -EOPNOTSUPP;
3398
3399                 params->vht_mumimo_follow_addr =
3400                         nla_data(info->attrs[NL80211_ATTR_MU_MIMO_FOLLOW_MAC_ADDR]);
3401                 change = true;
3402         }
3403
3404         return change ? 1 : 0;
3405 }
3406
3407 static int nl80211_valid_4addr(struct cfg80211_registered_device *rdev,
3408                                struct net_device *netdev, u8 use_4addr,
3409                                enum nl80211_iftype iftype)
3410 {
3411         if (!use_4addr) {
3412                 if (netdev && (netdev->priv_flags & IFF_BRIDGE_PORT))
3413                         return -EBUSY;
3414                 return 0;
3415         }
3416
3417         switch (iftype) {
3418         case NL80211_IFTYPE_AP_VLAN:
3419                 if (rdev->wiphy.flags & WIPHY_FLAG_4ADDR_AP)
3420                         return 0;
3421                 break;
3422         case NL80211_IFTYPE_STATION:
3423                 if (rdev->wiphy.flags & WIPHY_FLAG_4ADDR_STATION)
3424                         return 0;
3425                 break;
3426         default:
3427                 break;
3428         }
3429
3430         return -EOPNOTSUPP;
3431 }
3432
3433 static int nl80211_set_interface(struct sk_buff *skb, struct genl_info *info)
3434 {
3435         struct cfg80211_registered_device *rdev = info->user_ptr[0];
3436         struct vif_params params;
3437         int err;
3438         enum nl80211_iftype otype, ntype;
3439         struct net_device *dev = info->user_ptr[1];
3440         bool change = false;
3441
3442         memset(&params, 0, sizeof(params));
3443
3444         otype = ntype = dev->ieee80211_ptr->iftype;
3445
3446         if (info->attrs[NL80211_ATTR_IFTYPE]) {
3447                 ntype = nla_get_u32(info->attrs[NL80211_ATTR_IFTYPE]);
3448                 if (otype != ntype)
3449                         change = true;
3450         }
3451
3452         if (info->attrs[NL80211_ATTR_MESH_ID]) {
3453                 struct wireless_dev *wdev = dev->ieee80211_ptr;
3454
3455                 if (ntype != NL80211_IFTYPE_MESH_POINT)
3456                         return -EINVAL;
3457                 if (netif_running(dev))
3458                         return -EBUSY;
3459
3460                 wdev_lock(wdev);
3461                 BUILD_BUG_ON(IEEE80211_MAX_SSID_LEN !=
3462                              IEEE80211_MAX_MESH_ID_LEN);
3463                 wdev->mesh_id_up_len =
3464                         nla_len(info->attrs[NL80211_ATTR_MESH_ID]);
3465                 memcpy(wdev->ssid, nla_data(info->attrs[NL80211_ATTR_MESH_ID]),
3466                        wdev->mesh_id_up_len);
3467                 wdev_unlock(wdev);
3468         }
3469
3470         if (info->attrs[NL80211_ATTR_4ADDR]) {
3471                 params.use_4addr = !!nla_get_u8(info->attrs[NL80211_ATTR_4ADDR]);
3472                 change = true;
3473                 err = nl80211_valid_4addr(rdev, dev, params.use_4addr, ntype);
3474                 if (err)
3475                         return err;
3476         } else {
3477                 params.use_4addr = -1;
3478         }
3479
3480         err = nl80211_parse_mon_options(rdev, ntype, info, &params);
3481         if (err < 0)
3482                 return err;
3483         if (err > 0)
3484                 change = true;
3485
3486         if (change)
3487                 err = cfg80211_change_iface(rdev, dev, ntype, &params);
3488         else
3489                 err = 0;
3490
3491         if (!err && params.use_4addr != -1)
3492                 dev->ieee80211_ptr->use_4addr = params.use_4addr;
3493
3494         if (change && !err) {
3495                 struct wireless_dev *wdev = dev->ieee80211_ptr;
3496
3497                 nl80211_notify_iface(rdev, wdev, NL80211_CMD_SET_INTERFACE);
3498         }
3499
3500         return err;
3501 }
3502
3503 static int nl80211_new_interface(struct sk_buff *skb, struct genl_info *info)
3504 {
3505         struct cfg80211_registered_device *rdev = info->user_ptr[0];
3506         struct vif_params params;
3507         struct wireless_dev *wdev;
3508         struct sk_buff *msg;
3509         int err;
3510         enum nl80211_iftype type = NL80211_IFTYPE_UNSPECIFIED;
3511
3512         /* to avoid failing a new interface creation due to pending removal */
3513         cfg80211_destroy_ifaces(rdev);
3514
3515         memset(&params, 0, sizeof(params));
3516
3517         if (!info->attrs[NL80211_ATTR_IFNAME])
3518                 return -EINVAL;
3519
3520         if (info->attrs[NL80211_ATTR_IFTYPE])
3521                 type = nla_get_u32(info->attrs[NL80211_ATTR_IFTYPE]);
3522
3523         if (!rdev->ops->add_virtual_intf)
3524                 return -EOPNOTSUPP;
3525
3526         if ((type == NL80211_IFTYPE_P2P_DEVICE || type == NL80211_IFTYPE_NAN ||
3527              rdev->wiphy.features & NL80211_FEATURE_MAC_ON_CREATE) &&
3528             info->attrs[NL80211_ATTR_MAC]) {
3529                 nla_memcpy(params.macaddr, info->attrs[NL80211_ATTR_MAC],
3530                            ETH_ALEN);
3531                 if (!is_valid_ether_addr(params.macaddr))
3532                         return -EADDRNOTAVAIL;
3533         }
3534
3535         if (info->attrs[NL80211_ATTR_4ADDR]) {
3536                 params.use_4addr = !!nla_get_u8(info->attrs[NL80211_ATTR_4ADDR]);
3537                 err = nl80211_valid_4addr(rdev, NULL, params.use_4addr, type);
3538                 if (err)
3539                         return err;
3540         }
3541
3542         if (!cfg80211_iftype_allowed(&rdev->wiphy, type, params.use_4addr, 0))
3543                 return -EOPNOTSUPP;
3544
3545         err = nl80211_parse_mon_options(rdev, type, info, &params);
3546         if (err < 0)
3547                 return err;
3548
3549         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
3550         if (!msg)
3551                 return -ENOMEM;
3552
3553         wdev = rdev_add_virtual_intf(rdev,
3554                                 nla_data(info->attrs[NL80211_ATTR_IFNAME]),
3555                                 NET_NAME_USER, type, &params);
3556         if (WARN_ON(!wdev)) {
3557                 nlmsg_free(msg);
3558                 return -EPROTO;
3559         } else if (IS_ERR(wdev)) {
3560                 nlmsg_free(msg);
3561                 return PTR_ERR(wdev);
3562         }
3563
3564         if (info->attrs[NL80211_ATTR_SOCKET_OWNER])
3565                 wdev->owner_nlportid = info->snd_portid;
3566
3567         switch (type) {
3568         case NL80211_IFTYPE_MESH_POINT:
3569                 if (!info->attrs[NL80211_ATTR_MESH_ID])
3570                         break;
3571                 wdev_lock(wdev);
3572                 BUILD_BUG_ON(IEEE80211_MAX_SSID_LEN !=
3573                              IEEE80211_MAX_MESH_ID_LEN);
3574                 wdev->mesh_id_up_len =
3575                         nla_len(info->attrs[NL80211_ATTR_MESH_ID]);
3576                 memcpy(wdev->ssid, nla_data(info->attrs[NL80211_ATTR_MESH_ID]),
3577                        wdev->mesh_id_up_len);
3578                 wdev_unlock(wdev);
3579                 break;
3580         case NL80211_IFTYPE_NAN:
3581         case NL80211_IFTYPE_P2P_DEVICE:
3582                 /*
3583                  * P2P Device and NAN do not have a netdev, so don't go
3584                  * through the netdev notifier and must be added here
3585                  */
3586                 cfg80211_init_wdev(rdev, wdev);
3587                 break;
3588         default:
3589                 break;
3590         }
3591
3592         if (nl80211_send_iface(msg, info->snd_portid, info->snd_seq, 0,
3593                                rdev, wdev, NL80211_CMD_NEW_INTERFACE) < 0) {
3594                 nlmsg_free(msg);
3595                 return -ENOBUFS;
3596         }
3597
3598         return genlmsg_reply(msg, info);
3599 }
3600
3601 static int nl80211_del_interface(struct sk_buff *skb, struct genl_info *info)
3602 {
3603         struct cfg80211_registered_device *rdev = info->user_ptr[0];
3604         struct wireless_dev *wdev = info->user_ptr[1];
3605
3606         if (!rdev->ops->del_virtual_intf)
3607                 return -EOPNOTSUPP;
3608
3609         /*
3610          * If we remove a wireless device without a netdev then clear
3611          * user_ptr[1] so that nl80211_post_doit won't dereference it
3612          * to check if it needs to do dev_put(). Otherwise it crashes
3613          * since the wdev has been freed, unlike with a netdev where
3614          * we need the dev_put() for the netdev to really be freed.
3615          */
3616         if (!wdev->netdev)
3617                 info->user_ptr[1] = NULL;
3618
3619         return rdev_del_virtual_intf(rdev, wdev);
3620 }
3621
3622 static int nl80211_set_noack_map(struct sk_buff *skb, struct genl_info *info)
3623 {
3624         struct cfg80211_registered_device *rdev = info->user_ptr[0];
3625         struct net_device *dev = info->user_ptr[1];
3626         u16 noack_map;
3627
3628         if (!info->attrs[NL80211_ATTR_NOACK_MAP])
3629                 return -EINVAL;
3630
3631         if (!rdev->ops->set_noack_map)
3632                 return -EOPNOTSUPP;
3633
3634         noack_map = nla_get_u16(info->attrs[NL80211_ATTR_NOACK_MAP]);
3635
3636         return rdev_set_noack_map(rdev, dev, noack_map);
3637 }
3638
3639 struct get_key_cookie {
3640         struct sk_buff *msg;
3641         int error;
3642         int idx;
3643 };
3644
3645 static void get_key_callback(void *c, struct key_params *params)
3646 {
3647         struct nlattr *key;
3648         struct get_key_cookie *cookie = c;
3649
3650         if ((params->key &&
3651              nla_put(cookie->msg, NL80211_ATTR_KEY_DATA,
3652                      params->key_len, params->key)) ||
3653             (params->seq &&
3654              nla_put(cookie->msg, NL80211_ATTR_KEY_SEQ,
3655                      params->seq_len, params->seq)) ||
3656             (params->cipher &&
3657              nla_put_u32(cookie->msg, NL80211_ATTR_KEY_CIPHER,
3658                          params->cipher)))
3659                 goto nla_put_failure;
3660
3661         key = nla_nest_start_noflag(cookie->msg, NL80211_ATTR_KEY);
3662         if (!key)
3663                 goto nla_put_failure;
3664
3665         if ((params->key &&
3666              nla_put(cookie->msg, NL80211_KEY_DATA,
3667                      params->key_len, params->key)) ||
3668             (params->seq &&
3669              nla_put(cookie->msg, NL80211_KEY_SEQ,
3670                      params->seq_len, params->seq)) ||
3671             (params->cipher &&
3672              nla_put_u32(cookie->msg, NL80211_KEY_CIPHER,
3673                          params->cipher)))
3674                 goto nla_put_failure;
3675
3676         if (nla_put_u8(cookie->msg, NL80211_KEY_IDX, cookie->idx))
3677                 goto nla_put_failure;
3678
3679         nla_nest_end(cookie->msg, key);
3680
3681         return;
3682  nla_put_failure:
3683         cookie->error = 1;
3684 }
3685
3686 static int nl80211_get_key(struct sk_buff *skb, struct genl_info *info)
3687 {
3688         struct cfg80211_registered_device *rdev = info->user_ptr[0];
3689         int err;
3690         struct net_device *dev = info->user_ptr[1];
3691         u8 key_idx = 0;
3692         const u8 *mac_addr = NULL;
3693         bool pairwise;
3694         struct get_key_cookie cookie = {
3695                 .error = 0,
3696         };
3697         void *hdr;
3698         struct sk_buff *msg;
3699
3700         if (info->attrs[NL80211_ATTR_KEY_IDX])
3701                 key_idx = nla_get_u8(info->attrs[NL80211_ATTR_KEY_IDX]);
3702
3703         if (info->attrs[NL80211_ATTR_MAC])
3704                 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
3705
3706         pairwise = !!mac_addr;
3707         if (info->attrs[NL80211_ATTR_KEY_TYPE]) {
3708                 u32 kt = nla_get_u32(info->attrs[NL80211_ATTR_KEY_TYPE]);
3709
3710                 if (kt != NL80211_KEYTYPE_GROUP &&
3711                     kt != NL80211_KEYTYPE_PAIRWISE)
3712                         return -EINVAL;
3713                 pairwise = kt == NL80211_KEYTYPE_PAIRWISE;
3714         }
3715
3716         if (!rdev->ops->get_key)
3717                 return -EOPNOTSUPP;
3718
3719         if (!pairwise && mac_addr && !(rdev->wiphy.flags & WIPHY_FLAG_IBSS_RSN))
3720                 return -ENOENT;
3721
3722         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
3723         if (!msg)
3724                 return -ENOMEM;
3725
3726         hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
3727                              NL80211_CMD_NEW_KEY);
3728         if (!hdr)
3729                 goto nla_put_failure;
3730
3731         cookie.msg = msg;
3732         cookie.idx = key_idx;
3733
3734         if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
3735             nla_put_u8(msg, NL80211_ATTR_KEY_IDX, key_idx))
3736                 goto nla_put_failure;
3737         if (mac_addr &&
3738             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, mac_addr))
3739                 goto nla_put_failure;
3740
3741         err = rdev_get_key(rdev, dev, key_idx, pairwise, mac_addr, &cookie,
3742                            get_key_callback);
3743
3744         if (err)
3745                 goto free_msg;
3746
3747         if (cookie.error)
3748                 goto nla_put_failure;
3749
3750         genlmsg_end(msg, hdr);
3751         return genlmsg_reply(msg, info);
3752
3753  nla_put_failure:
3754         err = -ENOBUFS;
3755  free_msg:
3756         nlmsg_free(msg);
3757         return err;
3758 }
3759
3760 static int nl80211_set_key(struct sk_buff *skb, struct genl_info *info)
3761 {
3762         struct cfg80211_registered_device *rdev = info->user_ptr[0];
3763         struct key_parse key;
3764         int err;
3765         struct net_device *dev = info->user_ptr[1];
3766
3767         err = nl80211_parse_key(info, &key);
3768         if (err)
3769                 return err;
3770
3771         if (key.idx < 0)
3772                 return -EINVAL;
3773
3774         /* Only support setting default key and
3775          * Extended Key ID action NL80211_KEY_SET_TX.
3776          */
3777         if (!key.def && !key.defmgmt &&
3778             !(key.p.mode == NL80211_KEY_SET_TX))
3779                 return -EINVAL;
3780
3781         wdev_lock(dev->ieee80211_ptr);
3782
3783         if (key.def) {
3784                 if (!rdev->ops->set_default_key) {
3785                         err = -EOPNOTSUPP;
3786                         goto out;
3787                 }
3788
3789                 err = nl80211_key_allowed(dev->ieee80211_ptr);
3790                 if (err)
3791                         goto out;
3792
3793                 err = rdev_set_default_key(rdev, dev, key.idx,
3794                                                  key.def_uni, key.def_multi);
3795
3796                 if (err)
3797                         goto out;
3798
3799 #ifdef CONFIG_CFG80211_WEXT
3800                 dev->ieee80211_ptr->wext.default_key = key.idx;
3801 #endif
3802         } else if (key.defmgmt) {
3803                 if (key.def_uni || !key.def_multi) {
3804                         err = -EINVAL;
3805                         goto out;
3806                 }
3807
3808                 if (!rdev->ops->set_default_mgmt_key) {
3809                         err = -EOPNOTSUPP;
3810                         goto out;
3811                 }
3812
3813                 err = nl80211_key_allowed(dev->ieee80211_ptr);
3814                 if (err)
3815                         goto out;
3816
3817                 err = rdev_set_default_mgmt_key(rdev, dev, key.idx);
3818                 if (err)
3819                         goto out;
3820
3821 #ifdef CONFIG_CFG80211_WEXT
3822                 dev->ieee80211_ptr->wext.default_mgmt_key = key.idx;
3823 #endif
3824         } else if (key.p.mode == NL80211_KEY_SET_TX &&
3825                    wiphy_ext_feature_isset(&rdev->wiphy,
3826                                            NL80211_EXT_FEATURE_EXT_KEY_ID)) {
3827                 u8 *mac_addr = NULL;
3828
3829                 if (info->attrs[NL80211_ATTR_MAC])
3830                         mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
3831
3832                 if (!mac_addr || key.idx < 0 || key.idx > 1) {
3833                         err = -EINVAL;
3834                         goto out;
3835                 }
3836
3837                 err = rdev_add_key(rdev, dev, key.idx,
3838                                    NL80211_KEYTYPE_PAIRWISE,
3839                                    mac_addr, &key.p);
3840         } else {
3841                 err = -EINVAL;
3842         }
3843  out:
3844         wdev_unlock(dev->ieee80211_ptr);
3845
3846         return err;
3847 }
3848
3849 static int nl80211_new_key(struct sk_buff *skb, struct genl_info *info)
3850 {
3851         struct cfg80211_registered_device *rdev = info->user_ptr[0];
3852         int err;
3853         struct net_device *dev = info->user_ptr[1];
3854         struct key_parse key;
3855         const u8 *mac_addr = NULL;
3856
3857         err = nl80211_parse_key(info, &key);
3858         if (err)
3859                 return err;
3860
3861         if (!key.p.key)
3862                 return -EINVAL;
3863
3864         if (info->attrs[NL80211_ATTR_MAC])
3865                 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
3866
3867         if (key.type == -1) {
3868                 if (mac_addr)
3869                         key.type = NL80211_KEYTYPE_PAIRWISE;
3870                 else
3871                         key.type = NL80211_KEYTYPE_GROUP;
3872         }
3873
3874         /* for now */
3875         if (key.type != NL80211_KEYTYPE_PAIRWISE &&
3876             key.type != NL80211_KEYTYPE_GROUP)
3877                 return -EINVAL;
3878
3879         if (!rdev->ops->add_key)
3880                 return -EOPNOTSUPP;
3881
3882         if (cfg80211_validate_key_settings(rdev, &key.p, key.idx,
3883                                            key.type == NL80211_KEYTYPE_PAIRWISE,
3884                                            mac_addr))
3885                 return -EINVAL;
3886
3887         wdev_lock(dev->ieee80211_ptr);
3888         err = nl80211_key_allowed(dev->ieee80211_ptr);
3889         if (!err)
3890                 err = rdev_add_key(rdev, dev, key.idx,
3891                                    key.type == NL80211_KEYTYPE_PAIRWISE,
3892                                     mac_addr, &key.p);
3893         wdev_unlock(dev->ieee80211_ptr);
3894
3895         return err;
3896 }
3897
3898 static int nl80211_del_key(struct sk_buff *skb, struct genl_info *info)
3899 {
3900         struct cfg80211_registered_device *rdev = info->user_ptr[0];
3901         int err;
3902         struct net_device *dev = info->user_ptr[1];
3903         u8 *mac_addr = NULL;
3904         struct key_parse key;
3905
3906         err = nl80211_parse_key(info, &key);
3907         if (err)
3908                 return err;
3909
3910         if (info->attrs[NL80211_ATTR_MAC])
3911                 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
3912
3913         if (key.type == -1) {
3914                 if (mac_addr)
3915                         key.type = NL80211_KEYTYPE_PAIRWISE;
3916                 else
3917                         key.type = NL80211_KEYTYPE_GROUP;
3918         }
3919
3920         /* for now */
3921         if (key.type != NL80211_KEYTYPE_PAIRWISE &&
3922             key.type != NL80211_KEYTYPE_GROUP)
3923                 return -EINVAL;
3924
3925         if (!rdev->ops->del_key)
3926                 return -EOPNOTSUPP;
3927
3928         wdev_lock(dev->ieee80211_ptr);
3929         err = nl80211_key_allowed(dev->ieee80211_ptr);
3930
3931         if (key.type == NL80211_KEYTYPE_GROUP && mac_addr &&
3932             !(rdev->wiphy.flags & WIPHY_FLAG_IBSS_RSN))
3933                 err = -ENOENT;
3934
3935         if (!err)
3936                 err = rdev_del_key(rdev, dev, key.idx,
3937                                    key.type == NL80211_KEYTYPE_PAIRWISE,
3938                                    mac_addr);
3939
3940 #ifdef CONFIG_CFG80211_WEXT
3941         if (!err) {
3942                 if (key.idx == dev->ieee80211_ptr->wext.default_key)
3943                         dev->ieee80211_ptr->wext.default_key = -1;
3944                 else if (key.idx == dev->ieee80211_ptr->wext.default_mgmt_key)
3945                         dev->ieee80211_ptr->wext.default_mgmt_key = -1;
3946         }
3947 #endif
3948         wdev_unlock(dev->ieee80211_ptr);
3949
3950         return err;
3951 }
3952
3953 /* This function returns an error or the number of nested attributes */
3954 static int validate_acl_mac_addrs(struct nlattr *nl_attr)
3955 {
3956         struct nlattr *attr;
3957         int n_entries = 0, tmp;
3958
3959         nla_for_each_nested(attr, nl_attr, tmp) {
3960                 if (nla_len(attr) != ETH_ALEN)
3961                         return -EINVAL;
3962
3963                 n_entries++;
3964         }
3965
3966         return n_entries;
3967 }
3968
3969 /*
3970  * This function parses ACL information and allocates memory for ACL data.
3971  * On successful return, the calling function is responsible to free the
3972  * ACL buffer returned by this function.
3973  */
3974 static struct cfg80211_acl_data *parse_acl_data(struct wiphy *wiphy,
3975                                                 struct genl_info *info)
3976 {
3977         enum nl80211_acl_policy acl_policy;
3978         struct nlattr *attr;
3979         struct cfg80211_acl_data *acl;
3980         int i = 0, n_entries, tmp;
3981
3982         if (!wiphy->max_acl_mac_addrs)
3983                 return ERR_PTR(-EOPNOTSUPP);
3984
3985         if (!info->attrs[NL80211_ATTR_ACL_POLICY])
3986                 return ERR_PTR(-EINVAL);
3987
3988         acl_policy = nla_get_u32(info->attrs[NL80211_ATTR_ACL_POLICY]);
3989         if (acl_policy != NL80211_ACL_POLICY_ACCEPT_UNLESS_LISTED &&
3990             acl_policy != NL80211_ACL_POLICY_DENY_UNLESS_LISTED)
3991                 return ERR_PTR(-EINVAL);
3992
3993         if (!info->attrs[NL80211_ATTR_MAC_ADDRS])
3994                 return ERR_PTR(-EINVAL);
3995
3996         n_entries = validate_acl_mac_addrs(info->attrs[NL80211_ATTR_MAC_ADDRS]);
3997         if (n_entries < 0)
3998                 return ERR_PTR(n_entries);
3999
4000         if (n_entries > wiphy->max_acl_mac_addrs)
4001                 return ERR_PTR(-ENOTSUPP);
4002
4003         acl = kzalloc(struct_size(acl, mac_addrs, n_entries), GFP_KERNEL);
4004         if (!acl)
4005                 return ERR_PTR(-ENOMEM);
4006
4007         nla_for_each_nested(attr, info->attrs[NL80211_ATTR_MAC_ADDRS], tmp) {
4008                 memcpy(acl->mac_addrs[i].addr, nla_data(attr), ETH_ALEN);
4009                 i++;
4010         }
4011
4012         acl->n_acl_entries = n_entries;
4013         acl->acl_policy = acl_policy;
4014
4015         return acl;
4016 }
4017
4018 static int nl80211_set_mac_acl(struct sk_buff *skb, struct genl_info *info)
4019 {
4020         struct cfg80211_registered_device *rdev = info->user_ptr[0];
4021         struct net_device *dev = info->user_ptr[1];
4022         struct cfg80211_acl_data *acl;
4023         int err;
4024
4025         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
4026             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
4027                 return -EOPNOTSUPP;
4028
4029         if (!dev->ieee80211_ptr->beacon_interval)
4030                 return -EINVAL;
4031
4032         acl = parse_acl_data(&rdev->wiphy, info);
4033         if (IS_ERR(acl))
4034                 return PTR_ERR(acl);
4035
4036         err = rdev_set_mac_acl(rdev, dev, acl);
4037
4038         kfree(acl);
4039
4040         return err;
4041 }
4042
4043 static u32 rateset_to_mask(struct ieee80211_supported_band *sband,
4044                            u8 *rates, u8 rates_len)
4045 {
4046         u8 i;
4047         u32 mask = 0;
4048
4049         for (i = 0; i < rates_len; i++) {
4050                 int rate = (rates[i] & 0x7f) * 5;
4051                 int ridx;
4052
4053                 for (ridx = 0; ridx < sband->n_bitrates; ridx++) {
4054                         struct ieee80211_rate *srate =
4055                                 &sband->bitrates[ridx];
4056                         if (rate == srate->bitrate) {
4057                                 mask |= 1 << ridx;
4058                                 break;
4059                         }
4060                 }
4061                 if (ridx == sband->n_bitrates)
4062                         return 0; /* rate not found */
4063         }
4064
4065         return mask;
4066 }
4067
4068 static bool ht_rateset_to_mask(struct ieee80211_supported_band *sband,
4069                                u8 *rates, u8 rates_len,
4070                                u8 mcs[IEEE80211_HT_MCS_MASK_LEN])
4071 {
4072         u8 i;
4073
4074         memset(mcs, 0, IEEE80211_HT_MCS_MASK_LEN);
4075
4076         for (i = 0; i < rates_len; i++) {
4077                 int ridx, rbit;
4078
4079                 ridx = rates[i] / 8;
4080                 rbit = BIT(rates[i] % 8);
4081
4082                 /* check validity */
4083                 if ((ridx < 0) || (ridx >= IEEE80211_HT_MCS_MASK_LEN))
4084                         return false;
4085
4086                 /* check availability */
4087                 ridx = array_index_nospec(ridx, IEEE80211_HT_MCS_MASK_LEN);
4088                 if (sband->ht_cap.mcs.rx_mask[ridx] & rbit)
4089                         mcs[ridx] |= rbit;
4090                 else
4091                         return false;
4092         }
4093
4094         return true;
4095 }
4096
4097 static u16 vht_mcs_map_to_mcs_mask(u8 vht_mcs_map)
4098 {
4099         u16 mcs_mask = 0;
4100
4101         switch (vht_mcs_map) {
4102         case IEEE80211_VHT_MCS_NOT_SUPPORTED:
4103                 break;
4104         case IEEE80211_VHT_MCS_SUPPORT_0_7:
4105                 mcs_mask = 0x00FF;
4106                 break;
4107         case IEEE80211_VHT_MCS_SUPPORT_0_8:
4108                 mcs_mask = 0x01FF;
4109                 break;
4110         case IEEE80211_VHT_MCS_SUPPORT_0_9:
4111                 mcs_mask = 0x03FF;
4112                 break;
4113         default:
4114                 break;
4115         }
4116
4117         return mcs_mask;
4118 }
4119
4120 static void vht_build_mcs_mask(u16 vht_mcs_map,
4121                                u16 vht_mcs_mask[NL80211_VHT_NSS_MAX])
4122 {
4123         u8 nss;
4124
4125         for (nss = 0; nss < NL80211_VHT_NSS_MAX; nss++) {
4126                 vht_mcs_mask[nss] = vht_mcs_map_to_mcs_mask(vht_mcs_map & 0x03);
4127                 vht_mcs_map >>= 2;
4128         }
4129 }
4130
4131 static bool vht_set_mcs_mask(struct ieee80211_supported_band *sband,
4132                              struct nl80211_txrate_vht *txrate,
4133                              u16 mcs[NL80211_VHT_NSS_MAX])
4134 {
4135         u16 tx_mcs_map = le16_to_cpu(sband->vht_cap.vht_mcs.tx_mcs_map);
4136         u16 tx_mcs_mask[NL80211_VHT_NSS_MAX] = {};
4137         u8 i;
4138
4139         if (!sband->vht_cap.vht_supported)
4140                 return false;
4141
4142         memset(mcs, 0, sizeof(u16) * NL80211_VHT_NSS_MAX);
4143
4144         /* Build vht_mcs_mask from VHT capabilities */
4145         vht_build_mcs_mask(tx_mcs_map, tx_mcs_mask);
4146
4147         for (i = 0; i < NL80211_VHT_NSS_MAX; i++) {
4148                 if ((tx_mcs_mask[i] & txrate->mcs[i]) == txrate->mcs[i])
4149                         mcs[i] = txrate->mcs[i];
4150                 else
4151                         return false;
4152         }
4153
4154         return true;
4155 }
4156
4157 static const struct nla_policy nl80211_txattr_policy[NL80211_TXRATE_MAX + 1] = {
4158         [NL80211_TXRATE_LEGACY] = { .type = NLA_BINARY,
4159                                     .len = NL80211_MAX_SUPP_RATES },
4160         [NL80211_TXRATE_HT] = { .type = NLA_BINARY,
4161                                 .len = NL80211_MAX_SUPP_HT_RATES },
4162         [NL80211_TXRATE_VHT] = {
4163                 .type = NLA_EXACT_LEN_WARN,
4164                 .len = sizeof(struct nl80211_txrate_vht),
4165         },
4166         [NL80211_TXRATE_GI] = { .type = NLA_U8 },
4167 };
4168
4169 static int nl80211_parse_tx_bitrate_mask(struct genl_info *info,
4170                                          struct cfg80211_bitrate_mask *mask)
4171 {
4172         struct nlattr *tb[NL80211_TXRATE_MAX + 1];
4173         struct cfg80211_registered_device *rdev = info->user_ptr[0];
4174         int rem, i;
4175         struct nlattr *tx_rates;
4176         struct ieee80211_supported_band *sband;
4177         u16 vht_tx_mcs_map;
4178
4179         memset(mask, 0, sizeof(*mask));
4180         /* Default to all rates enabled */
4181         for (i = 0; i < NUM_NL80211_BANDS; i++) {
4182                 sband = rdev->wiphy.bands[i];
4183
4184                 if (!sband)
4185                         continue;
4186
4187                 mask->control[i].legacy = (1 << sband->n_bitrates) - 1;
4188                 memcpy(mask->control[i].ht_mcs,
4189                        sband->ht_cap.mcs.rx_mask,
4190                        sizeof(mask->control[i].ht_mcs));
4191
4192                 if (!sband->vht_cap.vht_supported)
4193                         continue;
4194
4195                 vht_tx_mcs_map = le16_to_cpu(sband->vht_cap.vht_mcs.tx_mcs_map);
4196                 vht_build_mcs_mask(vht_tx_mcs_map, mask->control[i].vht_mcs);
4197         }
4198
4199         /* if no rates are given set it back to the defaults */
4200         if (!info->attrs[NL80211_ATTR_TX_RATES])
4201                 goto out;
4202
4203         /* The nested attribute uses enum nl80211_band as the index. This maps
4204          * directly to the enum nl80211_band values used in cfg80211.
4205          */
4206         BUILD_BUG_ON(NL80211_MAX_SUPP_HT_RATES > IEEE80211_HT_MCS_MASK_LEN * 8);
4207         nla_for_each_nested(tx_rates, info->attrs[NL80211_ATTR_TX_RATES], rem) {
4208                 enum nl80211_band band = nla_type(tx_rates);
4209                 int err;
4210
4211                 if (band < 0 || band >= NUM_NL80211_BANDS)
4212                         return -EINVAL;
4213                 sband = rdev->wiphy.bands[band];
4214                 if (sband == NULL)
4215                         return -EINVAL;
4216                 err = nla_parse_nested_deprecated(tb, NL80211_TXRATE_MAX,
4217                                                   tx_rates,
4218                                                   nl80211_txattr_policy,
4219                                                   info->extack);
4220                 if (err)
4221                         return err;
4222                 if (tb[NL80211_TXRATE_LEGACY]) {
4223                         mask->control[band].legacy = rateset_to_mask(
4224                                 sband,
4225                                 nla_data(tb[NL80211_TXRATE_LEGACY]),
4226                                 nla_len(tb[NL80211_TXRATE_LEGACY]));
4227                         if ((mask->control[band].legacy == 0) &&
4228                             nla_len(tb[NL80211_TXRATE_LEGACY]))
4229                                 return -EINVAL;
4230                 }
4231                 if (tb[NL80211_TXRATE_HT]) {
4232                         if (!ht_rateset_to_mask(
4233                                         sband,
4234                                         nla_data(tb[NL80211_TXRATE_HT]),
4235                                         nla_len(tb[NL80211_TXRATE_HT]),
4236                                         mask->control[band].ht_mcs))
4237                                 return -EINVAL;
4238                 }
4239                 if (tb[NL80211_TXRATE_VHT]) {
4240                         if (!vht_set_mcs_mask(
4241                                         sband,
4242                                         nla_data(tb[NL80211_TXRATE_VHT]),
4243                                         mask->control[band].vht_mcs))
4244                                 return -EINVAL;
4245                 }
4246                 if (tb[NL80211_TXRATE_GI]) {
4247                         mask->control[band].gi =
4248                                 nla_get_u8(tb[NL80211_TXRATE_GI]);
4249                         if (mask->control[band].gi > NL80211_TXRATE_FORCE_LGI)
4250                                 return -EINVAL;
4251                 }
4252
4253                 if (mask->control[band].legacy == 0) {
4254                         /* don't allow empty legacy rates if HT or VHT
4255                          * are not even supported.
4256                          */
4257                         if (!(rdev->wiphy.bands[band]->ht_cap.ht_supported ||
4258                               rdev->wiphy.bands[band]->vht_cap.vht_supported))
4259                                 return -EINVAL;
4260
4261                         for (i = 0; i < IEEE80211_HT_MCS_MASK_LEN; i++)
4262                                 if (mask->control[band].ht_mcs[i])
4263                                         goto out;
4264
4265                         for (i = 0; i < NL80211_VHT_NSS_MAX; i++)
4266                                 if (mask->control[band].vht_mcs[i])
4267                                         goto out;
4268
4269                         /* legacy and mcs rates may not be both empty */
4270                         return -EINVAL;
4271                 }
4272         }
4273
4274 out:
4275         return 0;
4276 }
4277
4278 static int validate_beacon_tx_rate(struct cfg80211_registered_device *rdev,
4279                                    enum nl80211_band band,
4280                                    struct cfg80211_bitrate_mask *beacon_rate)
4281 {
4282         u32 count_ht, count_vht, i;
4283         u32 rate = beacon_rate->control[band].legacy;
4284
4285         /* Allow only one rate */
4286         if (hweight32(rate) > 1)
4287                 return -EINVAL;
4288
4289         count_ht = 0;
4290         for (i = 0; i < IEEE80211_HT_MCS_MASK_LEN; i++) {
4291                 if (hweight8(beacon_rate->control[band].ht_mcs[i]) > 1) {
4292                         return -EINVAL;
4293                 } else if (beacon_rate->control[band].ht_mcs[i]) {
4294                         count_ht++;
4295                         if (count_ht > 1)
4296                                 return -EINVAL;
4297                 }
4298                 if (count_ht && rate)
4299                         return -EINVAL;
4300         }
4301
4302         count_vht = 0;
4303         for (i = 0; i < NL80211_VHT_NSS_MAX; i++) {
4304                 if (hweight16(beacon_rate->control[band].vht_mcs[i]) > 1) {
4305                         return -EINVAL;
4306                 } else if (beacon_rate->control[band].vht_mcs[i]) {
4307                         count_vht++;
4308                         if (count_vht > 1)
4309                                 return -EINVAL;
4310                 }
4311                 if (count_vht && rate)
4312                         return -EINVAL;
4313         }
4314
4315         if ((count_ht && count_vht) || (!rate && !count_ht && !count_vht))
4316                 return -EINVAL;
4317
4318         if (rate &&
4319             !wiphy_ext_feature_isset(&rdev->wiphy,
4320                                      NL80211_EXT_FEATURE_BEACON_RATE_LEGACY))
4321                 return -EINVAL;
4322         if (count_ht &&
4323             !wiphy_ext_feature_isset(&rdev->wiphy,
4324                                      NL80211_EXT_FEATURE_BEACON_RATE_HT))
4325                 return -EINVAL;
4326         if (count_vht &&
4327             !wiphy_ext_feature_isset(&rdev->wiphy,
4328                                      NL80211_EXT_FEATURE_BEACON_RATE_VHT))
4329                 return -EINVAL;
4330
4331         return 0;
4332 }
4333
4334 static int nl80211_parse_beacon(struct cfg80211_registered_device *rdev,
4335                                 struct nlattr *attrs[],
4336                                 struct cfg80211_beacon_data *bcn)
4337 {
4338         bool haveinfo = false;
4339         int err;
4340
4341         memset(bcn, 0, sizeof(*bcn));
4342
4343         if (attrs[NL80211_ATTR_BEACON_HEAD]) {
4344                 bcn->head = nla_data(attrs[NL80211_ATTR_BEACON_HEAD]);
4345                 bcn->head_len = nla_len(attrs[NL80211_ATTR_BEACON_HEAD]);
4346                 if (!bcn->head_len)
4347                         return -EINVAL;
4348                 haveinfo = true;
4349         }
4350
4351         if (attrs[NL80211_ATTR_BEACON_TAIL]) {
4352                 bcn->tail = nla_data(attrs[NL80211_ATTR_BEACON_TAIL]);
4353                 bcn->tail_len = nla_len(attrs[NL80211_ATTR_BEACON_TAIL]);
4354                 haveinfo = true;
4355         }
4356
4357         if (!haveinfo)
4358                 return -EINVAL;
4359
4360         if (attrs[NL80211_ATTR_IE]) {
4361                 bcn->beacon_ies = nla_data(attrs[NL80211_ATTR_IE]);
4362                 bcn->beacon_ies_len = nla_len(attrs[NL80211_ATTR_IE]);
4363         }
4364
4365         if (attrs[NL80211_ATTR_IE_PROBE_RESP]) {
4366                 bcn->proberesp_ies =
4367                         nla_data(attrs[NL80211_ATTR_IE_PROBE_RESP]);
4368                 bcn->proberesp_ies_len =
4369                         nla_len(attrs[NL80211_ATTR_IE_PROBE_RESP]);
4370         }
4371
4372         if (attrs[NL80211_ATTR_IE_ASSOC_RESP]) {
4373                 bcn->assocresp_ies =
4374                         nla_data(attrs[NL80211_ATTR_IE_ASSOC_RESP]);
4375                 bcn->assocresp_ies_len =
4376                         nla_len(attrs[NL80211_ATTR_IE_ASSOC_RESP]);
4377         }
4378
4379         if (attrs[NL80211_ATTR_PROBE_RESP]) {
4380                 bcn->probe_resp = nla_data(attrs[NL80211_ATTR_PROBE_RESP]);
4381                 bcn->probe_resp_len = nla_len(attrs[NL80211_ATTR_PROBE_RESP]);
4382         }
4383
4384         if (attrs[NL80211_ATTR_FTM_RESPONDER]) {
4385                 struct nlattr *tb[NL80211_FTM_RESP_ATTR_MAX + 1];
4386
4387                 err = nla_parse_nested_deprecated(tb,
4388                                                   NL80211_FTM_RESP_ATTR_MAX,
4389                                                   attrs[NL80211_ATTR_FTM_RESPONDER],
4390                                                   NULL, NULL);
4391                 if (err)
4392                         return err;
4393
4394                 if (tb[NL80211_FTM_RESP_ATTR_ENABLED] &&
4395                     wiphy_ext_feature_isset(&rdev->wiphy,
4396                                             NL80211_EXT_FEATURE_ENABLE_FTM_RESPONDER))
4397                         bcn->ftm_responder = 1;
4398                 else
4399                         return -EOPNOTSUPP;
4400
4401                 if (tb[NL80211_FTM_RESP_ATTR_LCI]) {
4402                         bcn->lci = nla_data(tb[NL80211_FTM_RESP_ATTR_LCI]);
4403                         bcn->lci_len = nla_len(tb[NL80211_FTM_RESP_ATTR_LCI]);
4404                 }
4405
4406                 if (tb[NL80211_FTM_RESP_ATTR_CIVICLOC]) {
4407                         bcn->civicloc = nla_data(tb[NL80211_FTM_RESP_ATTR_CIVICLOC]);
4408                         bcn->civicloc_len = nla_len(tb[NL80211_FTM_RESP_ATTR_CIVICLOC]);
4409                 }
4410         } else {
4411                 bcn->ftm_responder = -1;
4412         }
4413
4414         return 0;
4415 }
4416
4417 static int nl80211_parse_he_obss_pd(struct nlattr *attrs,
4418                                     struct ieee80211_he_obss_pd *he_obss_pd)
4419 {
4420         struct nlattr *tb[NL80211_HE_OBSS_PD_ATTR_MAX + 1];
4421         int err;
4422
4423         err = nla_parse_nested(tb, NL80211_HE_OBSS_PD_ATTR_MAX, attrs,
4424                                he_obss_pd_policy, NULL);
4425         if (err)
4426                 return err;
4427
4428         if (!tb[NL80211_HE_OBSS_PD_ATTR_MIN_OFFSET] ||
4429             !tb[NL80211_HE_OBSS_PD_ATTR_MAX_OFFSET])
4430                 return -EINVAL;
4431
4432         he_obss_pd->min_offset =
4433                 nla_get_u32(tb[NL80211_HE_OBSS_PD_ATTR_MIN_OFFSET]);
4434         he_obss_pd->max_offset =
4435                 nla_get_u32(tb[NL80211_HE_OBSS_PD_ATTR_MAX_OFFSET]);
4436
4437         if (he_obss_pd->min_offset >= he_obss_pd->max_offset)
4438                 return -EINVAL;
4439
4440         he_obss_pd->enable = true;
4441
4442         return 0;
4443 }
4444
4445 static void nl80211_check_ap_rate_selectors(struct cfg80211_ap_settings *params,
4446                                             const u8 *rates)
4447 {
4448         int i;
4449
4450         if (!rates)
4451                 return;
4452
4453         for (i = 0; i < rates[1]; i++) {
4454                 if (rates[2 + i] == BSS_MEMBERSHIP_SELECTOR_HT_PHY)
4455                         params->ht_required = true;
4456                 if (rates[2 + i] == BSS_MEMBERSHIP_SELECTOR_VHT_PHY)
4457                         params->vht_required = true;
4458         }
4459 }
4460
4461 /*
4462  * Since the nl80211 API didn't include, from the beginning, attributes about
4463  * HT/VHT requirements/capabilities, we parse them out of the IEs for the
4464  * benefit of drivers that rebuild IEs in the firmware.
4465  */
4466 static void nl80211_calculate_ap_params(struct cfg80211_ap_settings *params)
4467 {
4468         const struct cfg80211_beacon_data *bcn = &params->beacon;
4469         size_t ies_len = bcn->tail_len;
4470         const u8 *ies = bcn->tail;
4471         const u8 *rates;
4472         const u8 *cap;
4473
4474         rates = cfg80211_find_ie(WLAN_EID_SUPP_RATES, ies, ies_len);
4475         nl80211_check_ap_rate_selectors(params, rates);
4476
4477         rates = cfg80211_find_ie(WLAN_EID_EXT_SUPP_RATES, ies, ies_len);
4478         nl80211_check_ap_rate_selectors(params, rates);
4479
4480         cap = cfg80211_find_ie(WLAN_EID_HT_CAPABILITY, ies, ies_len);
4481         if (cap && cap[1] >= sizeof(*params->ht_cap))
4482                 params->ht_cap = (void *)(cap + 2);
4483         cap = cfg80211_find_ie(WLAN_EID_VHT_CAPABILITY, ies, ies_len);
4484         if (cap && cap[1] >= sizeof(*params->vht_cap))
4485                 params->vht_cap = (void *)(cap + 2);
4486         cap = cfg80211_find_ext_ie(WLAN_EID_EXT_HE_CAPABILITY, ies, ies_len);
4487         if (cap && cap[1] >= sizeof(*params->he_cap) + 1)
4488                 params->he_cap = (void *)(cap + 3);
4489 }
4490
4491 static bool nl80211_get_ap_channel(struct cfg80211_registered_device *rdev,
4492                                    struct cfg80211_ap_settings *params)
4493 {
4494         struct wireless_dev *wdev;
4495         bool ret = false;
4496
4497         list_for_each_entry(wdev, &rdev->wiphy.wdev_list, list) {
4498                 if (wdev->iftype != NL80211_IFTYPE_AP &&
4499                     wdev->iftype != NL80211_IFTYPE_P2P_GO)
4500                         continue;
4501
4502                 if (!wdev->preset_chandef.chan)
4503                         continue;
4504
4505                 params->chandef = wdev->preset_chandef;
4506                 ret = true;
4507                 break;
4508         }
4509
4510         return ret;
4511 }
4512
4513 static bool nl80211_valid_auth_type(struct cfg80211_registered_device *rdev,
4514                                     enum nl80211_auth_type auth_type,
4515                                     enum nl80211_commands cmd)
4516 {
4517         if (auth_type > NL80211_AUTHTYPE_MAX)
4518                 return false;
4519
4520         switch (cmd) {
4521         case NL80211_CMD_AUTHENTICATE:
4522                 if (!(rdev->wiphy.features & NL80211_FEATURE_SAE) &&
4523                     auth_type == NL80211_AUTHTYPE_SAE)
4524                         return false;
4525                 if (!wiphy_ext_feature_isset(&rdev->wiphy,
4526                                              NL80211_EXT_FEATURE_FILS_STA) &&
4527                     (auth_type == NL80211_AUTHTYPE_FILS_SK ||
4528                      auth_type == NL80211_AUTHTYPE_FILS_SK_PFS ||
4529                      auth_type == NL80211_AUTHTYPE_FILS_PK))
4530                         return false;
4531                 return true;
4532         case NL80211_CMD_CONNECT:
4533                 if (!(rdev->wiphy.features & NL80211_FEATURE_SAE) &&
4534                     !wiphy_ext_feature_isset(&rdev->wiphy,
4535                                              NL80211_EXT_FEATURE_SAE_OFFLOAD) &&
4536                     auth_type == NL80211_AUTHTYPE_SAE)
4537                         return false;
4538
4539                 /* FILS with SK PFS or PK not supported yet */
4540                 if (auth_type == NL80211_AUTHTYPE_FILS_SK_PFS ||
4541                     auth_type == NL80211_AUTHTYPE_FILS_PK)
4542                         return false;
4543                 if (!wiphy_ext_feature_isset(
4544                             &rdev->wiphy,
4545                             NL80211_EXT_FEATURE_FILS_SK_OFFLOAD) &&
4546                     auth_type == NL80211_AUTHTYPE_FILS_SK)
4547                         return false;
4548                 return true;
4549         case NL80211_CMD_START_AP:
4550                 /* SAE not supported yet */
4551                 if (auth_type == NL80211_AUTHTYPE_SAE)
4552                         return false;
4553                 /* FILS not supported yet */
4554                 if (auth_type == NL80211_AUTHTYPE_FILS_SK ||
4555                     auth_type == NL80211_AUTHTYPE_FILS_SK_PFS ||
4556                     auth_type == NL80211_AUTHTYPE_FILS_PK)
4557                         return false;
4558                 return true;
4559         default:
4560                 return false;
4561         }
4562 }
4563
4564 static int nl80211_start_ap(struct sk_buff *skb, struct genl_info *info)
4565 {
4566         struct cfg80211_registered_device *rdev = info->user_ptr[0];
4567         struct net_device *dev = info->user_ptr[1];
4568         struct wireless_dev *wdev = dev->ieee80211_ptr;
4569         struct cfg80211_ap_settings params;
4570         int err;
4571
4572         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
4573             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
4574                 return -EOPNOTSUPP;
4575
4576         if (!rdev->ops->start_ap)
4577                 return -EOPNOTSUPP;
4578
4579         if (wdev->beacon_interval)
4580                 return -EALREADY;
4581
4582         memset(&params, 0, sizeof(params));
4583
4584         /* these are required for START_AP */
4585         if (!info->attrs[NL80211_ATTR_BEACON_INTERVAL] ||
4586             !info->attrs[NL80211_ATTR_DTIM_PERIOD] ||
4587             !info->attrs[NL80211_ATTR_BEACON_HEAD])
4588                 return -EINVAL;
4589
4590         err = nl80211_parse_beacon(rdev, info->attrs, &params.beacon);
4591         if (err)
4592                 return err;
4593
4594         params.beacon_interval =
4595                 nla_get_u32(info->attrs[NL80211_ATTR_BEACON_INTERVAL]);
4596         params.dtim_period =
4597                 nla_get_u32(info->attrs[NL80211_ATTR_DTIM_PERIOD]);
4598
4599         err = cfg80211_validate_beacon_int(rdev, dev->ieee80211_ptr->iftype,
4600                                            params.beacon_interval);
4601         if (err)
4602                 return err;
4603
4604         /*
4605          * In theory, some of these attributes should be required here
4606          * but since they were not used when the command was originally
4607          * added, keep them optional for old user space programs to let
4608          * them continue to work with drivers that do not need the
4609          * additional information -- drivers must check!
4610          */
4611         if (info->attrs[NL80211_ATTR_SSID]) {
4612                 params.ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
4613                 params.ssid_len =
4614                         nla_len(info->attrs[NL80211_ATTR_SSID]);
4615                 if (params.ssid_len == 0 ||
4616                     params.ssid_len > IEEE80211_MAX_SSID_LEN)
4617                         return -EINVAL;
4618         }
4619
4620         if (info->attrs[NL80211_ATTR_HIDDEN_SSID])
4621                 params.hidden_ssid = nla_get_u32(
4622                         info->attrs[NL80211_ATTR_HIDDEN_SSID]);
4623
4624         params.privacy = !!info->attrs[NL80211_ATTR_PRIVACY];
4625
4626         if (info->attrs[NL80211_ATTR_AUTH_TYPE]) {
4627                 params.auth_type = nla_get_u32(
4628                         info->attrs[NL80211_ATTR_AUTH_TYPE]);
4629                 if (!nl80211_valid_auth_type(rdev, params.auth_type,
4630                                              NL80211_CMD_START_AP))
4631                         return -EINVAL;
4632         } else
4633                 params.auth_type = NL80211_AUTHTYPE_AUTOMATIC;
4634
4635         err = nl80211_crypto_settings(rdev, info, &params.crypto,
4636                                       NL80211_MAX_NR_CIPHER_SUITES);
4637         if (err)
4638                 return err;
4639
4640         if (info->attrs[NL80211_ATTR_INACTIVITY_TIMEOUT]) {
4641                 if (!(rdev->wiphy.features & NL80211_FEATURE_INACTIVITY_TIMER))
4642                         return -EOPNOTSUPP;
4643                 params.inactivity_timeout = nla_get_u16(
4644                         info->attrs[NL80211_ATTR_INACTIVITY_TIMEOUT]);
4645         }
4646
4647         if (info->attrs[NL80211_ATTR_P2P_CTWINDOW]) {
4648                 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
4649                         return -EINVAL;
4650                 params.p2p_ctwindow =
4651                         nla_get_u8(info->attrs[NL80211_ATTR_P2P_CTWINDOW]);
4652                 if (params.p2p_ctwindow != 0 &&
4653                     !(rdev->wiphy.features & NL80211_FEATURE_P2P_GO_CTWIN))
4654                         return -EINVAL;
4655         }
4656
4657         if (info->attrs[NL80211_ATTR_P2P_OPPPS]) {
4658                 u8 tmp;
4659
4660                 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
4661                         return -EINVAL;
4662                 tmp = nla_get_u8(info->attrs[NL80211_ATTR_P2P_OPPPS]);
4663                 params.p2p_opp_ps = tmp;
4664                 if (params.p2p_opp_ps != 0 &&
4665                     !(rdev->wiphy.features & NL80211_FEATURE_P2P_GO_OPPPS))
4666                         return -EINVAL;
4667         }
4668
4669         if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
4670                 err = nl80211_parse_chandef(rdev, info, &params.chandef);
4671                 if (err)
4672                         return err;
4673         } else if (wdev->preset_chandef.chan) {
4674                 params.chandef = wdev->preset_chandef;
4675         } else if (!nl80211_get_ap_channel(rdev, &params))
4676                 return -EINVAL;
4677
4678         if (!cfg80211_reg_can_beacon_relax(&rdev->wiphy, &params.chandef,
4679                                            wdev->iftype))
4680                 return -EINVAL;
4681
4682         if (info->attrs[NL80211_ATTR_TX_RATES]) {
4683                 err = nl80211_parse_tx_bitrate_mask(info, &params.beacon_rate);
4684                 if (err)
4685                         return err;
4686
4687                 err = validate_beacon_tx_rate(rdev, params.chandef.chan->band,
4688                                               &params.beacon_rate);
4689                 if (err)
4690                         return err;
4691         }
4692
4693         if (info->attrs[NL80211_ATTR_SMPS_MODE]) {
4694                 params.smps_mode =
4695                         nla_get_u8(info->attrs[NL80211_ATTR_SMPS_MODE]);
4696                 switch (params.smps_mode) {
4697                 case NL80211_SMPS_OFF:
4698                         break;
4699                 case NL80211_SMPS_STATIC:
4700                         if (!(rdev->wiphy.features &
4701                               NL80211_FEATURE_STATIC_SMPS))
4702                                 return -EINVAL;
4703                         break;
4704                 case NL80211_SMPS_DYNAMIC:
4705                         if (!(rdev->wiphy.features &
4706                               NL80211_FEATURE_DYNAMIC_SMPS))
4707                                 return -EINVAL;
4708                         break;
4709                 default:
4710                         return -EINVAL;
4711                 }
4712         } else {
4713                 params.smps_mode = NL80211_SMPS_OFF;
4714         }
4715
4716         params.pbss = nla_get_flag(info->attrs[NL80211_ATTR_PBSS]);
4717         if (params.pbss && !rdev->wiphy.bands[NL80211_BAND_60GHZ])
4718                 return -EOPNOTSUPP;
4719
4720         if (info->attrs[NL80211_ATTR_ACL_POLICY]) {
4721                 params.acl = parse_acl_data(&rdev->wiphy, info);
4722                 if (IS_ERR(params.acl))
4723                         return PTR_ERR(params.acl);
4724         }
4725
4726         params.twt_responder =
4727                     nla_get_flag(info->attrs[NL80211_ATTR_TWT_RESPONDER]);
4728
4729         if (info->attrs[NL80211_ATTR_HE_OBSS_PD]) {
4730                 err = nl80211_parse_he_obss_pd(
4731                                         info->attrs[NL80211_ATTR_HE_OBSS_PD],
4732                                         &params.he_obss_pd);
4733                 if (err)
4734                         return err;
4735         }
4736
4737         nl80211_calculate_ap_params(&params);
4738
4739         if (info->attrs[NL80211_ATTR_EXTERNAL_AUTH_SUPPORT])
4740                 params.flags |= AP_SETTINGS_EXTERNAL_AUTH_SUPPORT;
4741
4742         wdev_lock(wdev);
4743         err = rdev_start_ap(rdev, dev, &params);
4744         if (!err) {
4745                 wdev->preset_chandef = params.chandef;
4746                 wdev->beacon_interval = params.beacon_interval;
4747                 wdev->chandef = params.chandef;
4748                 wdev->ssid_len = params.ssid_len;
4749                 memcpy(wdev->ssid, params.ssid, wdev->ssid_len);
4750
4751                 if (info->attrs[NL80211_ATTR_SOCKET_OWNER])
4752                         wdev->conn_owner_nlportid = info->snd_portid;
4753         }
4754         wdev_unlock(wdev);
4755
4756         kfree(params.acl);
4757
4758         return err;
4759 }
4760
4761 static int nl80211_set_beacon(struct sk_buff *skb, struct genl_info *info)
4762 {
4763         struct cfg80211_registered_device *rdev = info->user_ptr[0];
4764         struct net_device *dev = info->user_ptr[1];
4765         struct wireless_dev *wdev = dev->ieee80211_ptr;
4766         struct cfg80211_beacon_data params;
4767         int err;
4768
4769         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
4770             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
4771                 return -EOPNOTSUPP;
4772
4773         if (!rdev->ops->change_beacon)
4774                 return -EOPNOTSUPP;
4775
4776         if (!wdev->beacon_interval)
4777                 return -EINVAL;
4778
4779         err = nl80211_parse_beacon(rdev, info->attrs, &params);
4780         if (err)
4781                 return err;
4782
4783         wdev_lock(wdev);
4784         err = rdev_change_beacon(rdev, dev, &params);
4785         wdev_unlock(wdev);
4786
4787         return err;
4788 }
4789
4790 static int nl80211_stop_ap(struct sk_buff *skb, struct genl_info *info)
4791 {
4792         struct cfg80211_registered_device *rdev = info->user_ptr[0];
4793         struct net_device *dev = info->user_ptr[1];
4794
4795         return cfg80211_stop_ap(rdev, dev, false);
4796 }
4797
4798 static const struct nla_policy sta_flags_policy[NL80211_STA_FLAG_MAX + 1] = {
4799         [NL80211_STA_FLAG_AUTHORIZED] = { .type = NLA_FLAG },
4800         [NL80211_STA_FLAG_SHORT_PREAMBLE] = { .type = NLA_FLAG },
4801         [NL80211_STA_FLAG_WME] = { .type = NLA_FLAG },
4802         [NL80211_STA_FLAG_MFP] = { .type = NLA_FLAG },
4803         [NL80211_STA_FLAG_AUTHENTICATED] = { .type = NLA_FLAG },
4804         [NL80211_STA_FLAG_TDLS_PEER] = { .type = NLA_FLAG },
4805 };
4806
4807 static int parse_station_flags(struct genl_info *info,
4808                                enum nl80211_iftype iftype,
4809                                struct station_parameters *params)
4810 {
4811         struct nlattr *flags[NL80211_STA_FLAG_MAX + 1];
4812         struct nlattr *nla;
4813         int flag;
4814
4815         /*
4816          * Try parsing the new attribute first so userspace
4817          * can specify both for older kernels.
4818          */
4819         nla = info->attrs[NL80211_ATTR_STA_FLAGS2];
4820         if (nla) {
4821                 struct nl80211_sta_flag_update *sta_flags;
4822
4823                 sta_flags = nla_data(nla);
4824                 params->sta_flags_mask = sta_flags->mask;
4825                 params->sta_flags_set = sta_flags->set;
4826                 params->sta_flags_set &= params->sta_flags_mask;
4827                 if ((params->sta_flags_mask |
4828                      params->sta_flags_set) & BIT(__NL80211_STA_FLAG_INVALID))
4829                         return -EINVAL;
4830                 return 0;
4831         }
4832
4833         /* if present, parse the old attribute */
4834
4835         nla = info->attrs[NL80211_ATTR_STA_FLAGS];
4836         if (!nla)
4837                 return 0;
4838
4839         if (nla_parse_nested_deprecated(flags, NL80211_STA_FLAG_MAX, nla, sta_flags_policy, info->extack))
4840                 return -EINVAL;
4841
4842         /*
4843          * Only allow certain flags for interface types so that
4844          * other attributes are silently ignored. Remember that
4845          * this is backward compatibility code with old userspace
4846          * and shouldn't be hit in other cases anyway.
4847          */
4848         switch (iftype) {
4849         case NL80211_IFTYPE_AP:
4850         case NL80211_IFTYPE_AP_VLAN:
4851         case NL80211_IFTYPE_P2P_GO:
4852                 params->sta_flags_mask = BIT(NL80211_STA_FLAG_AUTHORIZED) |
4853                                          BIT(NL80211_STA_FLAG_SHORT_PREAMBLE) |
4854                                          BIT(NL80211_STA_FLAG_WME) |
4855                                          BIT(NL80211_STA_FLAG_MFP);
4856                 break;
4857         case NL80211_IFTYPE_P2P_CLIENT:
4858         case NL80211_IFTYPE_STATION:
4859                 params->sta_flags_mask = BIT(NL80211_STA_FLAG_AUTHORIZED) |
4860                                          BIT(NL80211_STA_FLAG_TDLS_PEER);
4861                 break;
4862         case NL80211_IFTYPE_MESH_POINT:
4863                 params->sta_flags_mask = BIT(NL80211_STA_FLAG_AUTHENTICATED) |
4864                                          BIT(NL80211_STA_FLAG_MFP) |
4865                                          BIT(NL80211_STA_FLAG_AUTHORIZED);
4866                 break;
4867         default:
4868                 return -EINVAL;
4869         }
4870
4871         for (flag = 1; flag <= NL80211_STA_FLAG_MAX; flag++) {
4872                 if (flags[flag]) {
4873                         params->sta_flags_set |= (1<<flag);
4874
4875                         /* no longer support new API additions in old API */
4876                         if (flag > NL80211_STA_FLAG_MAX_OLD_API)
4877                                 return -EINVAL;
4878                 }
4879         }
4880
4881         return 0;
4882 }
4883
4884 bool nl80211_put_sta_rate(struct sk_buff *msg, struct rate_info *info, int attr)
4885 {
4886         struct nlattr *rate;
4887         u32 bitrate;
4888         u16 bitrate_compat;
4889         enum nl80211_rate_info rate_flg;
4890
4891         rate = nla_nest_start_noflag(msg, attr);
4892         if (!rate)
4893                 return false;
4894
4895         /* cfg80211_calculate_bitrate will return 0 for mcs >= 32 */
4896         bitrate = cfg80211_calculate_bitrate(info);
4897         /* report 16-bit bitrate only if we can */
4898         bitrate_compat = bitrate < (1UL << 16) ? bitrate : 0;
4899         if (bitrate > 0 &&
4900             nla_put_u32(msg, NL80211_RATE_INFO_BITRATE32, bitrate))
4901                 return false;
4902         if (bitrate_compat > 0 &&
4903             nla_put_u16(msg, NL80211_RATE_INFO_BITRATE, bitrate_compat))
4904                 return false;
4905
4906         switch (info->bw) {
4907         case RATE_INFO_BW_5:
4908                 rate_flg = NL80211_RATE_INFO_5_MHZ_WIDTH;
4909                 break;
4910         case RATE_INFO_BW_10:
4911                 rate_flg = NL80211_RATE_INFO_10_MHZ_WIDTH;
4912                 break;
4913         default:
4914                 WARN_ON(1);
4915                 /* fall through */
4916         case RATE_INFO_BW_20:
4917                 rate_flg = 0;
4918                 break;
4919         case RATE_INFO_BW_40:
4920                 rate_flg = NL80211_RATE_INFO_40_MHZ_WIDTH;
4921                 break;
4922         case RATE_INFO_BW_80:
4923                 rate_flg = NL80211_RATE_INFO_80_MHZ_WIDTH;
4924                 break;
4925         case RATE_INFO_BW_160:
4926                 rate_flg = NL80211_RATE_INFO_160_MHZ_WIDTH;
4927                 break;
4928         case RATE_INFO_BW_HE_RU:
4929                 rate_flg = 0;
4930                 WARN_ON(!(info->flags & RATE_INFO_FLAGS_HE_MCS));
4931         }
4932
4933         if (rate_flg && nla_put_flag(msg, rate_flg))
4934                 return false;
4935
4936         if (info->flags & RATE_INFO_FLAGS_MCS) {
4937                 if (nla_put_u8(msg, NL80211_RATE_INFO_MCS, info->mcs))
4938                         return false;
4939                 if (info->flags & RATE_INFO_FLAGS_SHORT_GI &&
4940                     nla_put_flag(msg, NL80211_RATE_INFO_SHORT_GI))
4941                         return false;
4942         } else if (info->flags & RATE_INFO_FLAGS_VHT_MCS) {
4943                 if (nla_put_u8(msg, NL80211_RATE_INFO_VHT_MCS, info->mcs))
4944                         return false;
4945                 if (nla_put_u8(msg, NL80211_RATE_INFO_VHT_NSS, info->nss))
4946                         return false;
4947                 if (info->flags & RATE_INFO_FLAGS_SHORT_GI &&
4948                     nla_put_flag(msg, NL80211_RATE_INFO_SHORT_GI))
4949                         return false;
4950         } else if (info->flags & RATE_INFO_FLAGS_HE_MCS) {
4951                 if (nla_put_u8(msg, NL80211_RATE_INFO_HE_MCS, info->mcs))
4952                         return false;
4953                 if (nla_put_u8(msg, NL80211_RATE_INFO_HE_NSS, info->nss))
4954                         return false;
4955                 if (nla_put_u8(msg, NL80211_RATE_INFO_HE_GI, info->he_gi))
4956                         return false;
4957                 if (nla_put_u8(msg, NL80211_RATE_INFO_HE_DCM, info->he_dcm))
4958                         return false;
4959                 if (info->bw == RATE_INFO_BW_HE_RU &&
4960                     nla_put_u8(msg, NL80211_RATE_INFO_HE_RU_ALLOC,
4961                                info->he_ru_alloc))
4962                         return false;
4963         }
4964
4965         nla_nest_end(msg, rate);
4966         return true;
4967 }
4968
4969 static bool nl80211_put_signal(struct sk_buff *msg, u8 mask, s8 *signal,
4970                                int id)
4971 {
4972         void *attr;
4973         int i = 0;
4974
4975         if (!mask)
4976                 return true;
4977
4978         attr = nla_nest_start_noflag(msg, id);
4979         if (!attr)
4980                 return false;
4981
4982         for (i = 0; i < IEEE80211_MAX_CHAINS; i++) {
4983                 if (!(mask & BIT(i)))
4984                         continue;
4985
4986                 if (nla_put_u8(msg, i, signal[i]))
4987                         return false;
4988         }
4989
4990         nla_nest_end(msg, attr);
4991
4992         return true;
4993 }
4994
4995 static int nl80211_send_station(struct sk_buff *msg, u32 cmd, u32 portid,
4996                                 u32 seq, int flags,
4997                                 struct cfg80211_registered_device *rdev,
4998                                 struct net_device *dev,
4999                                 const u8 *mac_addr, struct station_info *sinfo)
5000 {
5001         void *hdr;
5002         struct nlattr *sinfoattr, *bss_param;
5003
5004         hdr = nl80211hdr_put(msg, portid, seq, flags, cmd);
5005         if (!hdr) {
5006                 cfg80211_sinfo_release_content(sinfo);
5007                 return -1;
5008         }
5009
5010         if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
5011             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, mac_addr) ||
5012             nla_put_u32(msg, NL80211_ATTR_GENERATION, sinfo->generation))
5013                 goto nla_put_failure;
5014
5015         sinfoattr = nla_nest_start_noflag(msg, NL80211_ATTR_STA_INFO);
5016         if (!sinfoattr)
5017                 goto nla_put_failure;
5018
5019 #define PUT_SINFO(attr, memb, type) do {                                \
5020         BUILD_BUG_ON(sizeof(type) == sizeof(u64));                      \
5021         if (sinfo->filled & BIT_ULL(NL80211_STA_INFO_ ## attr) &&       \
5022             nla_put_ ## type(msg, NL80211_STA_INFO_ ## attr,            \
5023                              sinfo->memb))                              \
5024                 goto nla_put_failure;                                   \
5025         } while (0)
5026 #define PUT_SINFO_U64(attr, memb) do {                                  \
5027         if (sinfo->filled & BIT_ULL(NL80211_STA_INFO_ ## attr) &&       \
5028             nla_put_u64_64bit(msg, NL80211_STA_INFO_ ## attr,           \
5029                               sinfo->memb, NL80211_STA_INFO_PAD))       \
5030                 goto nla_put_failure;                                   \
5031         } while (0)
5032
5033         PUT_SINFO(CONNECTED_TIME, connected_time, u32);
5034         PUT_SINFO(INACTIVE_TIME, inactive_time, u32);
5035         PUT_SINFO_U64(ASSOC_AT_BOOTTIME, assoc_at);
5036
5037         if (sinfo->filled & (BIT_ULL(NL80211_STA_INFO_RX_BYTES) |
5038                              BIT_ULL(NL80211_STA_INFO_RX_BYTES64)) &&
5039             nla_put_u32(msg, NL80211_STA_INFO_RX_BYTES,
5040                         (u32)sinfo->rx_bytes))
5041                 goto nla_put_failure;
5042
5043         if (sinfo->filled & (BIT_ULL(NL80211_STA_INFO_TX_BYTES) |
5044                              BIT_ULL(NL80211_STA_INFO_TX_BYTES64)) &&
5045             nla_put_u32(msg, NL80211_STA_INFO_TX_BYTES,
5046                         (u32)sinfo->tx_bytes))
5047                 goto nla_put_failure;
5048
5049         PUT_SINFO_U64(RX_BYTES64, rx_bytes);
5050         PUT_SINFO_U64(TX_BYTES64, tx_bytes);
5051         PUT_SINFO(LLID, llid, u16);
5052         PUT_SINFO(PLID, plid, u16);
5053         PUT_SINFO(PLINK_STATE, plink_state, u8);
5054         PUT_SINFO_U64(RX_DURATION, rx_duration);
5055         PUT_SINFO_U64(TX_DURATION, tx_duration);
5056
5057         if (wiphy_ext_feature_isset(&rdev->wiphy,
5058                                     NL80211_EXT_FEATURE_AIRTIME_FAIRNESS))
5059                 PUT_SINFO(AIRTIME_WEIGHT, airtime_weight, u16);
5060
5061         switch (rdev->wiphy.signal_type) {
5062         case CFG80211_SIGNAL_TYPE_MBM:
5063                 PUT_SINFO(SIGNAL, signal, u8);
5064                 PUT_SINFO(SIGNAL_AVG, signal_avg, u8);
5065                 break;
5066         default:
5067                 break;
5068         }
5069         if (sinfo->filled & BIT_ULL(NL80211_STA_INFO_CHAIN_SIGNAL)) {
5070                 if (!nl80211_put_signal(msg, sinfo->chains,
5071                                         sinfo->chain_signal,
5072                                         NL80211_STA_INFO_CHAIN_SIGNAL))
5073                         goto nla_put_failure;
5074         }
5075         if (sinfo->filled & BIT_ULL(NL80211_STA_INFO_CHAIN_SIGNAL_AVG)) {
5076                 if (!nl80211_put_signal(msg, sinfo->chains,
5077                                         sinfo->chain_signal_avg,
5078                                         NL80211_STA_INFO_CHAIN_SIGNAL_AVG))
5079                         goto nla_put_failure;
5080         }
5081         if (sinfo->filled & BIT_ULL(NL80211_STA_INFO_TX_BITRATE)) {
5082                 if (!nl80211_put_sta_rate(msg, &sinfo->txrate,
5083                                           NL80211_STA_INFO_TX_BITRATE))
5084                         goto nla_put_failure;
5085         }
5086         if (sinfo->filled & BIT_ULL(NL80211_STA_INFO_RX_BITRATE)) {
5087                 if (!nl80211_put_sta_rate(msg, &sinfo->rxrate,
5088                                           NL80211_STA_INFO_RX_BITRATE))
5089                         goto nla_put_failure;
5090         }
5091
5092         PUT_SINFO(RX_PACKETS, rx_packets, u32);
5093         PUT_SINFO(TX_PACKETS, tx_packets, u32);
5094         PUT_SINFO(TX_RETRIES, tx_retries, u32);
5095         PUT_SINFO(TX_FAILED, tx_failed, u32);
5096         PUT_SINFO(EXPECTED_THROUGHPUT, expected_throughput, u32);
5097         PUT_SINFO(AIRTIME_LINK_METRIC, airtime_link_metric, u32);
5098         PUT_SINFO(BEACON_LOSS, beacon_loss_count, u32);
5099         PUT_SINFO(LOCAL_PM, local_pm, u32);
5100         PUT_SINFO(PEER_PM, peer_pm, u32);
5101         PUT_SINFO(NONPEER_PM, nonpeer_pm, u32);
5102         PUT_SINFO(CONNECTED_TO_GATE, connected_to_gate, u8);
5103
5104         if (sinfo->filled & BIT_ULL(NL80211_STA_INFO_BSS_PARAM)) {
5105                 bss_param = nla_nest_start_noflag(msg,
5106                                                   NL80211_STA_INFO_BSS_PARAM);
5107                 if (!bss_param)
5108                         goto nla_put_failure;
5109
5110                 if (((sinfo->bss_param.flags & BSS_PARAM_FLAGS_CTS_PROT) &&
5111                      nla_put_flag(msg, NL80211_STA_BSS_PARAM_CTS_PROT)) ||
5112                     ((sinfo->bss_param.flags & BSS_PARAM_FLAGS_SHORT_PREAMBLE) &&
5113                      nla_put_flag(msg, NL80211_STA_BSS_PARAM_SHORT_PREAMBLE)) ||
5114                     ((sinfo->bss_param.flags & BSS_PARAM_FLAGS_SHORT_SLOT_TIME) &&
5115                      nla_put_flag(msg, NL80211_STA_BSS_PARAM_SHORT_SLOT_TIME)) ||
5116                     nla_put_u8(msg, NL80211_STA_BSS_PARAM_DTIM_PERIOD,
5117                                sinfo->bss_param.dtim_period) ||
5118                     nla_put_u16(msg, NL80211_STA_BSS_PARAM_BEACON_INTERVAL,
5119                                 sinfo->bss_param.beacon_interval))
5120                         goto nla_put_failure;
5121
5122                 nla_nest_end(msg, bss_param);
5123         }
5124         if ((sinfo->filled & BIT_ULL(NL80211_STA_INFO_STA_FLAGS)) &&
5125             nla_put(msg, NL80211_STA_INFO_STA_FLAGS,
5126                     sizeof(struct nl80211_sta_flag_update),
5127                     &sinfo->sta_flags))
5128                 goto nla_put_failure;
5129
5130         PUT_SINFO_U64(T_OFFSET, t_offset);
5131         PUT_SINFO_U64(RX_DROP_MISC, rx_dropped_misc);
5132         PUT_SINFO_U64(BEACON_RX, rx_beacon);
5133         PUT_SINFO(BEACON_SIGNAL_AVG, rx_beacon_signal_avg, u8);
5134         PUT_SINFO(RX_MPDUS, rx_mpdu_count, u32);
5135         PUT_SINFO(FCS_ERROR_COUNT, fcs_err_count, u32);
5136         if (wiphy_ext_feature_isset(&rdev->wiphy,
5137                                     NL80211_EXT_FEATURE_ACK_SIGNAL_SUPPORT)) {
5138                 PUT_SINFO(ACK_SIGNAL, ack_signal, u8);
5139                 PUT_SINFO(ACK_SIGNAL_AVG, avg_ack_signal, s8);
5140         }
5141
5142 #undef PUT_SINFO
5143 #undef PUT_SINFO_U64
5144
5145         if (sinfo->pertid) {
5146                 struct nlattr *tidsattr;
5147                 int tid;
5148
5149                 tidsattr = nla_nest_start_noflag(msg,
5150                                                  NL80211_STA_INFO_TID_STATS);
5151                 if (!tidsattr)
5152                         goto nla_put_failure;
5153
5154                 for (tid = 0; tid < IEEE80211_NUM_TIDS + 1; tid++) {
5155                         struct cfg80211_tid_stats *tidstats;
5156                         struct nlattr *tidattr;
5157
5158                         tidstats = &sinfo->pertid[tid];
5159
5160                         if (!tidstats->filled)
5161                                 continue;
5162
5163                         tidattr = nla_nest_start_noflag(msg, tid + 1);
5164                         if (!tidattr)
5165                                 goto nla_put_failure;
5166
5167 #define PUT_TIDVAL_U64(attr, memb) do {                                 \
5168         if (tidstats->filled & BIT(NL80211_TID_STATS_ ## attr) &&       \
5169             nla_put_u64_64bit(msg, NL80211_TID_STATS_ ## attr,          \
5170                               tidstats->memb, NL80211_TID_STATS_PAD))   \
5171                 goto nla_put_failure;                                   \
5172         } while (0)
5173
5174                         PUT_TIDVAL_U64(RX_MSDU, rx_msdu);
5175                         PUT_TIDVAL_U64(TX_MSDU, tx_msdu);
5176                         PUT_TIDVAL_U64(TX_MSDU_RETRIES, tx_msdu_retries);
5177                         PUT_TIDVAL_U64(TX_MSDU_FAILED, tx_msdu_failed);
5178
5179 #undef PUT_TIDVAL_U64
5180                         if ((tidstats->filled &
5181                              BIT(NL80211_TID_STATS_TXQ_STATS)) &&
5182                             !nl80211_put_txq_stats(msg, &tidstats->txq_stats,
5183                                                    NL80211_TID_STATS_TXQ_STATS))
5184                                 goto nla_put_failure;
5185
5186                         nla_nest_end(msg, tidattr);
5187                 }
5188
5189                 nla_nest_end(msg, tidsattr);
5190         }
5191
5192         nla_nest_end(msg, sinfoattr);
5193
5194         if (sinfo->assoc_req_ies_len &&
5195             nla_put(msg, NL80211_ATTR_IE, sinfo->assoc_req_ies_len,
5196                     sinfo->assoc_req_ies))
5197                 goto nla_put_failure;
5198
5199         cfg80211_sinfo_release_content(sinfo);
5200         genlmsg_end(msg, hdr);
5201         return 0;
5202
5203  nla_put_failure:
5204         cfg80211_sinfo_release_content(sinfo);
5205         genlmsg_cancel(msg, hdr);
5206         return -EMSGSIZE;
5207 }
5208
5209 static int nl80211_dump_station(struct sk_buff *skb,
5210                                 struct netlink_callback *cb)
5211 {
5212         struct station_info sinfo;
5213         struct cfg80211_registered_device *rdev;
5214         struct wireless_dev *wdev;
5215         u8 mac_addr[ETH_ALEN];
5216         int sta_idx = cb->args[2];
5217         int err;
5218
5219         rtnl_lock();
5220         err = nl80211_prepare_wdev_dump(cb, &rdev, &wdev);
5221         if (err)
5222                 goto out_err;
5223
5224         if (!wdev->netdev) {
5225                 err = -EINVAL;
5226                 goto out_err;
5227         }
5228
5229         if (!rdev->ops->dump_station) {
5230                 err = -EOPNOTSUPP;
5231                 goto out_err;
5232         }
5233
5234         while (1) {
5235                 memset(&sinfo, 0, sizeof(sinfo));
5236                 err = rdev_dump_station(rdev, wdev->netdev, sta_idx,
5237                                         mac_addr, &sinfo);
5238                 if (err == -ENOENT)
5239                         break;
5240                 if (err)
5241                         goto out_err;
5242
5243                 if (nl80211_send_station(skb, NL80211_CMD_NEW_STATION,
5244                                 NETLINK_CB(cb->skb).portid,
5245                                 cb->nlh->nlmsg_seq, NLM_F_MULTI,
5246                                 rdev, wdev->netdev, mac_addr,
5247                                 &sinfo) < 0)
5248                         goto out;
5249
5250                 sta_idx++;
5251         }
5252
5253  out:
5254         cb->args[2] = sta_idx;
5255         err = skb->len;
5256  out_err:
5257         rtnl_unlock();
5258
5259         return err;
5260 }
5261
5262 static int nl80211_get_station(struct sk_buff *skb, struct genl_info *info)
5263 {
5264         struct cfg80211_registered_device *rdev = info->user_ptr[0];
5265         struct net_device *dev = info->user_ptr[1];
5266         struct station_info sinfo;
5267         struct sk_buff *msg;
5268         u8 *mac_addr = NULL;
5269         int err;
5270
5271         memset(&sinfo, 0, sizeof(sinfo));
5272
5273         if (!info->attrs[NL80211_ATTR_MAC])
5274                 return -EINVAL;
5275
5276         mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
5277
5278         if (!rdev->ops->get_station)
5279                 return -EOPNOTSUPP;
5280
5281         err = rdev_get_station(rdev, dev, mac_addr, &sinfo);
5282         if (err)
5283                 return err;
5284
5285         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
5286         if (!msg) {
5287                 cfg80211_sinfo_release_content(&sinfo);
5288                 return -ENOMEM;
5289         }
5290
5291         if (nl80211_send_station(msg, NL80211_CMD_NEW_STATION,
5292                                  info->snd_portid, info->snd_seq, 0,
5293                                  rdev, dev, mac_addr, &sinfo) < 0) {
5294                 nlmsg_free(msg);
5295                 return -ENOBUFS;
5296         }
5297
5298         return genlmsg_reply(msg, info);
5299 }
5300
5301 int cfg80211_check_station_change(struct wiphy *wiphy,
5302                                   struct station_parameters *params,
5303                                   enum cfg80211_station_type statype)
5304 {
5305         if (params->listen_interval != -1 &&
5306             statype != CFG80211_STA_AP_CLIENT_UNASSOC)
5307                 return -EINVAL;
5308
5309         if (params->support_p2p_ps != -1 &&
5310             statype != CFG80211_STA_AP_CLIENT_UNASSOC)
5311                 return -EINVAL;
5312
5313         if (params->aid &&
5314             !(params->sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)) &&
5315             statype != CFG80211_STA_AP_CLIENT_UNASSOC)
5316                 return -EINVAL;
5317
5318         /* When you run into this, adjust the code below for the new flag */
5319         BUILD_BUG_ON(NL80211_STA_FLAG_MAX != 7);
5320
5321         switch (statype) {
5322         case CFG80211_STA_MESH_PEER_KERNEL:
5323         case CFG80211_STA_MESH_PEER_USER:
5324                 /*
5325                  * No ignoring the TDLS flag here -- the userspace mesh
5326                  * code doesn't have the bug of including TDLS in the
5327                  * mask everywhere.
5328                  */
5329                 if (params->sta_flags_mask &
5330                                 ~(BIT(NL80211_STA_FLAG_AUTHENTICATED) |
5331                                   BIT(NL80211_STA_FLAG_MFP) |
5332                                   BIT(NL80211_STA_FLAG_AUTHORIZED)))
5333                         return -EINVAL;
5334                 break;
5335         case CFG80211_STA_TDLS_PEER_SETUP:
5336         case CFG80211_STA_TDLS_PEER_ACTIVE:
5337                 if (!(params->sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)))
5338                         return -EINVAL;
5339                 /* ignore since it can't change */
5340                 params->sta_flags_mask &= ~BIT(NL80211_STA_FLAG_TDLS_PEER);
5341                 break;
5342         default:
5343                 /* disallow mesh-specific things */
5344                 if (params->plink_action != NL80211_PLINK_ACTION_NO_ACTION)
5345                         return -EINVAL;
5346                 if (params->local_pm)
5347                         return -EINVAL;
5348                 if (params->sta_modify_mask & STATION_PARAM_APPLY_PLINK_STATE)
5349                         return -EINVAL;
5350         }
5351
5352         if (statype != CFG80211_STA_TDLS_PEER_SETUP &&
5353             statype != CFG80211_STA_TDLS_PEER_ACTIVE) {
5354                 /* TDLS can't be set, ... */
5355                 if (params->sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER))
5356                         return -EINVAL;
5357                 /*
5358                  * ... but don't bother the driver with it. This works around
5359                  * a hostapd/wpa_supplicant issue -- it always includes the
5360                  * TLDS_PEER flag in the mask even for AP mode.
5361                  */
5362                 params->sta_flags_mask &= ~BIT(NL80211_STA_FLAG_TDLS_PEER);
5363         }
5364
5365         if (statype != CFG80211_STA_TDLS_PEER_SETUP &&
5366             statype != CFG80211_STA_AP_CLIENT_UNASSOC) {
5367                 /* reject other things that can't change */
5368                 if (params->sta_modify_mask & STATION_PARAM_APPLY_UAPSD)
5369                         return -EINVAL;
5370                 if (params->sta_modify_mask & STATION_PARAM_APPLY_CAPABILITY)
5371                         return -EINVAL;
5372                 if (params->supported_rates)
5373                         return -EINVAL;
5374                 if (params->ext_capab || params->ht_capa || params->vht_capa ||
5375                     params->he_capa)
5376                         return -EINVAL;
5377         }
5378
5379         if (statype != CFG80211_STA_AP_CLIENT &&
5380             statype != CFG80211_STA_AP_CLIENT_UNASSOC) {
5381                 if (params->vlan)
5382                         return -EINVAL;
5383         }
5384
5385         switch (statype) {
5386         case CFG80211_STA_AP_MLME_CLIENT:
5387                 /* Use this only for authorizing/unauthorizing a station */
5388                 if (!(params->sta_flags_mask & BIT(NL80211_STA_FLAG_AUTHORIZED)))
5389                         return -EOPNOTSUPP;
5390                 break;
5391         case CFG80211_STA_AP_CLIENT:
5392         case CFG80211_STA_AP_CLIENT_UNASSOC:
5393                 /* accept only the listed bits */
5394                 if (params->sta_flags_mask &
5395                                 ~(BIT(NL80211_STA_FLAG_AUTHORIZED) |
5396                                   BIT(NL80211_STA_FLAG_AUTHENTICATED) |
5397                                   BIT(NL80211_STA_FLAG_ASSOCIATED) |
5398                                   BIT(NL80211_STA_FLAG_SHORT_PREAMBLE) |
5399                                   BIT(NL80211_STA_FLAG_WME) |
5400                                   BIT(NL80211_STA_FLAG_MFP)))
5401                         return -EINVAL;
5402
5403                 /* but authenticated/associated only if driver handles it */
5404                 if (!(wiphy->features & NL80211_FEATURE_FULL_AP_CLIENT_STATE) &&
5405                     params->sta_flags_mask &
5406                                 (BIT(NL80211_STA_FLAG_AUTHENTICATED) |
5407                                  BIT(NL80211_STA_FLAG_ASSOCIATED)))
5408                         return -EINVAL;
5409                 break;
5410         case CFG80211_STA_IBSS:
5411         case CFG80211_STA_AP_STA:
5412                 /* reject any changes other than AUTHORIZED */
5413                 if (params->sta_flags_mask & ~BIT(NL80211_STA_FLAG_AUTHORIZED))
5414                         return -EINVAL;
5415                 break;
5416         case CFG80211_STA_TDLS_PEER_SETUP:
5417                 /* reject any changes other than AUTHORIZED or WME */
5418                 if (params->sta_flags_mask & ~(BIT(NL80211_STA_FLAG_AUTHORIZED) |
5419                                                BIT(NL80211_STA_FLAG_WME)))
5420                         return -EINVAL;
5421                 /* force (at least) rates when authorizing */
5422                 if (params->sta_flags_set & BIT(NL80211_STA_FLAG_AUTHORIZED) &&
5423                     !params->supported_rates)
5424                         return -EINVAL;
5425                 break;
5426         case CFG80211_STA_TDLS_PEER_ACTIVE:
5427                 /* reject any changes */
5428                 return -EINVAL;
5429         case CFG80211_STA_MESH_PEER_KERNEL:
5430                 if (params->sta_modify_mask & STATION_PARAM_APPLY_PLINK_STATE)
5431                         return -EINVAL;
5432                 break;
5433         case CFG80211_STA_MESH_PEER_USER:
5434                 if (params->plink_action != NL80211_PLINK_ACTION_NO_ACTION &&
5435                     params->plink_action != NL80211_PLINK_ACTION_BLOCK)
5436                         return -EINVAL;
5437                 break;
5438         }
5439
5440         /*
5441          * Older kernel versions ignored this attribute entirely, so don't
5442          * reject attempts to update it but mark it as unused instead so the
5443          * driver won't look at the data.
5444          */
5445         if (statype != CFG80211_STA_AP_CLIENT_UNASSOC &&
5446             statype != CFG80211_STA_TDLS_PEER_SETUP)
5447                 params->opmode_notif_used = false;
5448
5449         return 0;
5450 }
5451 EXPORT_SYMBOL(cfg80211_check_station_change);
5452
5453 /*
5454  * Get vlan interface making sure it is running and on the right wiphy.
5455  */
5456 static struct net_device *get_vlan(struct genl_info *info,
5457                                    struct cfg80211_registered_device *rdev)
5458 {
5459         struct nlattr *vlanattr = info->attrs[NL80211_ATTR_STA_VLAN];
5460         struct net_device *v;
5461         int ret;
5462
5463         if (!vlanattr)
5464                 return NULL;
5465
5466         v = dev_get_by_index(genl_info_net(info), nla_get_u32(vlanattr));
5467         if (!v)
5468                 return ERR_PTR(-ENODEV);
5469
5470         if (!v->ieee80211_ptr || v->ieee80211_ptr->wiphy != &rdev->wiphy) {
5471                 ret = -EINVAL;
5472                 goto error;
5473         }
5474
5475         if (v->ieee80211_ptr->iftype != NL80211_IFTYPE_AP_VLAN &&
5476             v->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
5477             v->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO) {
5478                 ret = -EINVAL;
5479                 goto error;
5480         }
5481
5482         if (!netif_running(v)) {
5483                 ret = -ENETDOWN;
5484                 goto error;
5485         }
5486
5487         return v;
5488  error:
5489         dev_put(v);
5490         return ERR_PTR(ret);
5491 }
5492
5493 static const struct nla_policy
5494 nl80211_sta_wme_policy[NL80211_STA_WME_MAX + 1] = {
5495         [NL80211_STA_WME_UAPSD_QUEUES] = { .type = NLA_U8 },
5496         [NL80211_STA_WME_MAX_SP] = { .type = NLA_U8 },
5497 };
5498
5499 static int nl80211_parse_sta_wme(struct genl_info *info,
5500                                  struct station_parameters *params)
5501 {
5502         struct nlattr *tb[NL80211_STA_WME_MAX + 1];
5503         struct nlattr *nla;
5504         int err;
5505
5506         /* parse WME attributes if present */
5507         if (!info->attrs[NL80211_ATTR_STA_WME])
5508                 return 0;
5509
5510         nla = info->attrs[NL80211_ATTR_STA_WME];
5511         err = nla_parse_nested_deprecated(tb, NL80211_STA_WME_MAX, nla,
5512                                           nl80211_sta_wme_policy,
5513                                           info->extack);
5514         if (err)
5515                 return err;
5516
5517         if (tb[NL80211_STA_WME_UAPSD_QUEUES])
5518                 params->uapsd_queues = nla_get_u8(
5519                         tb[NL80211_STA_WME_UAPSD_QUEUES]);
5520         if (params->uapsd_queues & ~IEEE80211_WMM_IE_STA_QOSINFO_AC_MASK)
5521                 return -EINVAL;
5522
5523         if (tb[NL80211_STA_WME_MAX_SP])
5524                 params->max_sp = nla_get_u8(tb[NL80211_STA_WME_MAX_SP]);
5525
5526         if (params->max_sp & ~IEEE80211_WMM_IE_STA_QOSINFO_SP_MASK)
5527                 return -EINVAL;
5528
5529         params->sta_modify_mask |= STATION_PARAM_APPLY_UAPSD;
5530
5531         return 0;
5532 }
5533
5534 static int nl80211_parse_sta_channel_info(struct genl_info *info,
5535                                       struct station_parameters *params)
5536 {
5537         if (info->attrs[NL80211_ATTR_STA_SUPPORTED_CHANNELS]) {
5538                 params->supported_channels =
5539                      nla_data(info->attrs[NL80211_ATTR_STA_SUPPORTED_CHANNELS]);
5540                 params->supported_channels_len =
5541                      nla_len(info->attrs[NL80211_ATTR_STA_SUPPORTED_CHANNELS]);
5542                 /*
5543                  * Need to include at least one (first channel, number of
5544                  * channels) tuple for each subband, and must have proper
5545                  * tuples for the rest of the data as well.
5546                  */
5547                 if (params->supported_channels_len < 2)
5548                         return -EINVAL;
5549                 if (params->supported_channels_len % 2)
5550                         return -EINVAL;
5551         }
5552
5553         if (info->attrs[NL80211_ATTR_STA_SUPPORTED_OPER_CLASSES]) {
5554                 params->supported_oper_classes =
5555                  nla_data(info->attrs[NL80211_ATTR_STA_SUPPORTED_OPER_CLASSES]);
5556                 params->supported_oper_classes_len =
5557                   nla_len(info->attrs[NL80211_ATTR_STA_SUPPORTED_OPER_CLASSES]);
5558                 /*
5559                  * The value of the Length field of the Supported Operating
5560                  * Classes element is between 2 and 253.
5561                  */
5562                 if (params->supported_oper_classes_len < 2 ||
5563                     params->supported_oper_classes_len > 253)
5564                         return -EINVAL;
5565         }
5566         return 0;
5567 }
5568
5569 static int nl80211_set_station_tdls(struct genl_info *info,
5570                                     struct station_parameters *params)
5571 {
5572         int err;
5573         /* Dummy STA entry gets updated once the peer capabilities are known */
5574         if (info->attrs[NL80211_ATTR_PEER_AID])
5575                 params->aid = nla_get_u16(info->attrs[NL80211_ATTR_PEER_AID]);
5576         if (info->attrs[NL80211_ATTR_HT_CAPABILITY])
5577                 params->ht_capa =
5578                         nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]);
5579         if (info->attrs[NL80211_ATTR_VHT_CAPABILITY])
5580                 params->vht_capa =
5581                         nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY]);
5582         if (info->attrs[NL80211_ATTR_HE_CAPABILITY]) {
5583                 params->he_capa =
5584                         nla_data(info->attrs[NL80211_ATTR_HE_CAPABILITY]);
5585                 params->he_capa_len =
5586                         nla_len(info->attrs[NL80211_ATTR_HE_CAPABILITY]);
5587
5588                 if (params->he_capa_len < NL80211_HE_MIN_CAPABILITY_LEN)
5589                         return -EINVAL;
5590         }
5591
5592         err = nl80211_parse_sta_channel_info(info, params);
5593         if (err)
5594                 return err;
5595
5596         return nl80211_parse_sta_wme(info, params);
5597 }
5598
5599 static int nl80211_parse_sta_txpower_setting(struct genl_info *info,
5600                                              struct station_parameters *params)
5601 {
5602         struct cfg80211_registered_device *rdev = info->user_ptr[0];
5603         int idx;
5604
5605         if (info->attrs[NL80211_ATTR_STA_TX_POWER_SETTING]) {
5606                 if (!rdev->ops->set_tx_power ||
5607                     !wiphy_ext_feature_isset(&rdev->wiphy,
5608                                          NL80211_EXT_FEATURE_STA_TX_PWR))
5609                         return -EOPNOTSUPP;
5610
5611                 idx = NL80211_ATTR_STA_TX_POWER_SETTING;
5612                 params->txpwr.type = nla_get_u8(info->attrs[idx]);
5613
5614                 if (params->txpwr.type == NL80211_TX_POWER_LIMITED) {
5615                         idx = NL80211_ATTR_STA_TX_POWER;
5616
5617                         if (info->attrs[idx])
5618                                 params->txpwr.power =
5619                                         nla_get_s16(info->attrs[idx]);
5620                         else
5621                                 return -EINVAL;
5622                 }
5623                 params->sta_modify_mask |= STATION_PARAM_APPLY_STA_TXPOWER;
5624         }
5625
5626         return 0;
5627 }
5628
5629 static int nl80211_set_station(struct sk_buff *skb, struct genl_info *info)
5630 {
5631         struct cfg80211_registered_device *rdev = info->user_ptr[0];
5632         struct net_device *dev = info->user_ptr[1];
5633         struct station_parameters params;
5634         u8 *mac_addr;
5635         int err;
5636
5637         memset(&params, 0, sizeof(params));
5638
5639         if (!rdev->ops->change_station)
5640                 return -EOPNOTSUPP;
5641
5642         /*
5643          * AID and listen_interval properties can be set only for unassociated
5644          * station. Include these parameters here and will check them in
5645          * cfg80211_check_station_change().
5646          */
5647         if (info->attrs[NL80211_ATTR_STA_AID])
5648                 params.aid = nla_get_u16(info->attrs[NL80211_ATTR_STA_AID]);
5649
5650         if (info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL])
5651                 params.listen_interval =
5652                      nla_get_u16(info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL]);
5653         else
5654                 params.listen_interval = -1;
5655
5656         if (info->attrs[NL80211_ATTR_STA_SUPPORT_P2P_PS])
5657                 params.support_p2p_ps =
5658                         nla_get_u8(info->attrs[NL80211_ATTR_STA_SUPPORT_P2P_PS]);
5659         else
5660                 params.support_p2p_ps = -1;
5661
5662         if (!info->attrs[NL80211_ATTR_MAC])
5663                 return -EINVAL;
5664
5665         mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
5666
5667         if (info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]) {
5668                 params.supported_rates =
5669                         nla_data(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
5670                 params.supported_rates_len =
5671                         nla_len(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
5672         }
5673
5674         if (info->attrs[NL80211_ATTR_STA_CAPABILITY]) {
5675                 params.capability =
5676                         nla_get_u16(info->attrs[NL80211_ATTR_STA_CAPABILITY]);
5677                 params.sta_modify_mask |= STATION_PARAM_APPLY_CAPABILITY;
5678         }
5679
5680         if (info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]) {
5681                 params.ext_capab =
5682                         nla_data(info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]);
5683                 params.ext_capab_len =
5684                         nla_len(info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]);
5685         }
5686
5687         if (parse_station_flags(info, dev->ieee80211_ptr->iftype, &params))
5688                 return -EINVAL;
5689
5690         if (info->attrs[NL80211_ATTR_STA_PLINK_ACTION])
5691                 params.plink_action =
5692                         nla_get_u8(info->attrs[NL80211_ATTR_STA_PLINK_ACTION]);
5693
5694         if (info->attrs[NL80211_ATTR_STA_PLINK_STATE]) {
5695                 params.plink_state =
5696                         nla_get_u8(info->attrs[NL80211_ATTR_STA_PLINK_STATE]);
5697                 if (info->attrs[NL80211_ATTR_MESH_PEER_AID])
5698                         params.peer_aid = nla_get_u16(
5699                                 info->attrs[NL80211_ATTR_MESH_PEER_AID]);
5700                 params.sta_modify_mask |= STATION_PARAM_APPLY_PLINK_STATE;
5701         }
5702
5703         if (info->attrs[NL80211_ATTR_LOCAL_MESH_POWER_MODE])
5704                 params.local_pm = nla_get_u32(
5705                         info->attrs[NL80211_ATTR_LOCAL_MESH_POWER_MODE]);
5706
5707         if (info->attrs[NL80211_ATTR_OPMODE_NOTIF]) {
5708                 params.opmode_notif_used = true;
5709                 params.opmode_notif =
5710                         nla_get_u8(info->attrs[NL80211_ATTR_OPMODE_NOTIF]);
5711         }
5712
5713         if (info->attrs[NL80211_ATTR_AIRTIME_WEIGHT])
5714                 params.airtime_weight =
5715                         nla_get_u16(info->attrs[NL80211_ATTR_AIRTIME_WEIGHT]);
5716
5717         if (params.airtime_weight &&
5718             !wiphy_ext_feature_isset(&rdev->wiphy,
5719                                      NL80211_EXT_FEATURE_AIRTIME_FAIRNESS))
5720                 return -EOPNOTSUPP;
5721
5722         err = nl80211_parse_sta_txpower_setting(info, &params);
5723         if (err)
5724                 return err;
5725
5726         /* Include parameters for TDLS peer (will check later) */
5727         err = nl80211_set_station_tdls(info, &params);
5728         if (err)
5729                 return err;
5730
5731         params.vlan = get_vlan(info, rdev);
5732         if (IS_ERR(params.vlan))
5733                 return PTR_ERR(params.vlan);
5734
5735         switch (dev->ieee80211_ptr->iftype) {
5736         case NL80211_IFTYPE_AP:
5737         case NL80211_IFTYPE_AP_VLAN:
5738         case NL80211_IFTYPE_P2P_GO:
5739         case NL80211_IFTYPE_P2P_CLIENT:
5740         case NL80211_IFTYPE_STATION:
5741         case NL80211_IFTYPE_ADHOC:
5742         case NL80211_IFTYPE_MESH_POINT:
5743                 break;
5744         default:
5745                 err = -EOPNOTSUPP;
5746                 goto out_put_vlan;
5747         }
5748
5749         /* driver will call cfg80211_check_station_change() */
5750         err = rdev_change_station(rdev, dev, mac_addr, &params);
5751
5752  out_put_vlan:
5753         if (params.vlan)
5754                 dev_put(params.vlan);
5755
5756         return err;
5757 }
5758
5759 static int nl80211_new_station(struct sk_buff *skb, struct genl_info *info)
5760 {
5761         struct cfg80211_registered_device *rdev = info->user_ptr[0];
5762         int err;
5763         struct net_device *dev = info->user_ptr[1];
5764         struct station_parameters params;
5765         u8 *mac_addr = NULL;
5766         u32 auth_assoc = BIT(NL80211_STA_FLAG_AUTHENTICATED) |
5767                          BIT(NL80211_STA_FLAG_ASSOCIATED);
5768
5769         memset(&params, 0, sizeof(params));
5770
5771         if (!rdev->ops->add_station)
5772                 return -EOPNOTSUPP;
5773
5774         if (!info->attrs[NL80211_ATTR_MAC])
5775                 return -EINVAL;
5776
5777         if (!info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL])
5778                 return -EINVAL;
5779
5780         if (!info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES])
5781                 return -EINVAL;
5782
5783         if (!info->attrs[NL80211_ATTR_STA_AID] &&
5784             !info->attrs[NL80211_ATTR_PEER_AID])
5785                 return -EINVAL;
5786
5787         mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
5788         params.supported_rates =
5789                 nla_data(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
5790         params.supported_rates_len =
5791                 nla_len(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
5792         params.listen_interval =
5793                 nla_get_u16(info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL]);
5794
5795         if (info->attrs[NL80211_ATTR_STA_SUPPORT_P2P_PS]) {
5796                 params.support_p2p_ps =
5797                         nla_get_u8(info->attrs[NL80211_ATTR_STA_SUPPORT_P2P_PS]);
5798         } else {
5799                 /*
5800                  * if not specified, assume it's supported for P2P GO interface,
5801                  * and is NOT supported for AP interface
5802                  */
5803                 params.support_p2p_ps =
5804                         dev->ieee80211_ptr->iftype == NL80211_IFTYPE_P2P_GO;
5805         }
5806
5807         if (info->attrs[NL80211_ATTR_PEER_AID])
5808                 params.aid = nla_get_u16(info->attrs[NL80211_ATTR_PEER_AID]);
5809         else
5810                 params.aid = nla_get_u16(info->attrs[NL80211_ATTR_STA_AID]);
5811
5812         if (info->attrs[NL80211_ATTR_STA_CAPABILITY]) {
5813                 params.capability =
5814                         nla_get_u16(info->attrs[NL80211_ATTR_STA_CAPABILITY]);
5815                 params.sta_modify_mask |= STATION_PARAM_APPLY_CAPABILITY;
5816         }
5817
5818         if (info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]) {
5819                 params.ext_capab =
5820                         nla_data(info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]);
5821                 params.ext_capab_len =
5822                         nla_len(info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]);
5823         }
5824
5825         if (info->attrs[NL80211_ATTR_HT_CAPABILITY])
5826                 params.ht_capa =
5827                         nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]);
5828
5829         if (info->attrs[NL80211_ATTR_VHT_CAPABILITY])
5830                 params.vht_capa =
5831                         nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY]);
5832
5833         if (info->attrs[NL80211_ATTR_HE_CAPABILITY]) {
5834                 params.he_capa =
5835                         nla_data(info->attrs[NL80211_ATTR_HE_CAPABILITY]);
5836                 params.he_capa_len =
5837                         nla_len(info->attrs[NL80211_ATTR_HE_CAPABILITY]);
5838
5839                 /* max len is validated in nla policy */
5840                 if (params.he_capa_len < NL80211_HE_MIN_CAPABILITY_LEN)
5841                         return -EINVAL;
5842         }
5843
5844         if (info->attrs[NL80211_ATTR_OPMODE_NOTIF]) {
5845                 params.opmode_notif_used = true;
5846                 params.opmode_notif =
5847                         nla_get_u8(info->attrs[NL80211_ATTR_OPMODE_NOTIF]);
5848         }
5849
5850         if (info->attrs[NL80211_ATTR_STA_PLINK_ACTION])
5851                 params.plink_action =
5852                         nla_get_u8(info->attrs[NL80211_ATTR_STA_PLINK_ACTION]);
5853
5854         if (info->attrs[NL80211_ATTR_AIRTIME_WEIGHT])
5855                 params.airtime_weight =
5856                         nla_get_u16(info->attrs[NL80211_ATTR_AIRTIME_WEIGHT]);
5857
5858         if (params.airtime_weight &&
5859             !wiphy_ext_feature_isset(&rdev->wiphy,
5860                                      NL80211_EXT_FEATURE_AIRTIME_FAIRNESS))
5861                 return -EOPNOTSUPP;
5862
5863         err = nl80211_parse_sta_txpower_setting(info, &params);
5864         if (err)
5865                 return err;
5866
5867         err = nl80211_parse_sta_channel_info(info, &params);
5868         if (err)
5869                 return err;
5870
5871         err = nl80211_parse_sta_wme(info, &params);
5872         if (err)
5873                 return err;
5874
5875         if (parse_station_flags(info, dev->ieee80211_ptr->iftype, &params))
5876                 return -EINVAL;
5877
5878         /* HT/VHT requires QoS, but if we don't have that just ignore HT/VHT
5879          * as userspace might just pass through the capabilities from the IEs
5880          * directly, rather than enforcing this restriction and returning an
5881          * error in this case.
5882          */
5883         if (!(params.sta_flags_set & BIT(NL80211_STA_FLAG_WME))) {
5884                 params.ht_capa = NULL;
5885                 params.vht_capa = NULL;
5886
5887                 /* HE requires WME */
5888                 if (params.he_capa_len)
5889                         return -EINVAL;
5890         }
5891
5892         /* When you run into this, adjust the code below for the new flag */
5893         BUILD_BUG_ON(NL80211_STA_FLAG_MAX != 7);
5894
5895         switch (dev->ieee80211_ptr->iftype) {
5896         case NL80211_IFTYPE_AP:
5897         case NL80211_IFTYPE_AP_VLAN:
5898         case NL80211_IFTYPE_P2P_GO:
5899                 /* ignore WME attributes if iface/sta is not capable */
5900                 if (!(rdev->wiphy.flags & WIPHY_FLAG_AP_UAPSD) ||
5901                     !(params.sta_flags_set & BIT(NL80211_STA_FLAG_WME)))
5902                         params.sta_modify_mask &= ~STATION_PARAM_APPLY_UAPSD;
5903
5904                 /* TDLS peers cannot be added */
5905                 if ((params.sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)) ||
5906                     info->attrs[NL80211_ATTR_PEER_AID])
5907                         return -EINVAL;
5908                 /* but don't bother the driver with it */
5909                 params.sta_flags_mask &= ~BIT(NL80211_STA_FLAG_TDLS_PEER);
5910
5911                 /* allow authenticated/associated only if driver handles it */
5912                 if (!(rdev->wiphy.features &
5913                                 NL80211_FEATURE_FULL_AP_CLIENT_STATE) &&
5914                     params.sta_flags_mask & auth_assoc)
5915                         return -EINVAL;
5916
5917                 /* Older userspace, or userspace wanting to be compatible with
5918                  * !NL80211_FEATURE_FULL_AP_CLIENT_STATE, will not set the auth
5919                  * and assoc flags in the mask, but assumes the station will be
5920                  * added as associated anyway since this was the required driver
5921                  * behaviour before NL80211_FEATURE_FULL_AP_CLIENT_STATE was
5922                  * introduced.
5923                  * In order to not bother drivers with this quirk in the API
5924                  * set the flags in both the mask and set for new stations in
5925                  * this case.
5926                  */
5927                 if (!(params.sta_flags_mask & auth_assoc)) {
5928                         params.sta_flags_mask |= auth_assoc;
5929                         params.sta_flags_set |= auth_assoc;
5930                 }
5931
5932                 /* must be last in here for error handling */
5933                 params.vlan = get_vlan(info, rdev);
5934                 if (IS_ERR(params.vlan))
5935                         return PTR_ERR(params.vlan);
5936                 break;
5937         case NL80211_IFTYPE_MESH_POINT:
5938                 /* ignore uAPSD data */
5939                 params.sta_modify_mask &= ~STATION_PARAM_APPLY_UAPSD;
5940
5941                 /* associated is disallowed */
5942                 if (params.sta_flags_mask & BIT(NL80211_STA_FLAG_ASSOCIATED))
5943                         return -EINVAL;
5944                 /* TDLS peers cannot be added */
5945                 if ((params.sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)) ||
5946                     info->attrs[NL80211_ATTR_PEER_AID])
5947                         return -EINVAL;
5948                 break;
5949         case NL80211_IFTYPE_STATION:
5950         case NL80211_IFTYPE_P2P_CLIENT:
5951                 /* ignore uAPSD data */
5952                 params.sta_modify_mask &= ~STATION_PARAM_APPLY_UAPSD;
5953
5954                 /* these are disallowed */
5955                 if (params.sta_flags_mask &
5956                                 (BIT(NL80211_STA_FLAG_ASSOCIATED) |
5957                                  BIT(NL80211_STA_FLAG_AUTHENTICATED)))
5958                         return -EINVAL;
5959                 /* Only TDLS peers can be added */
5960                 if (!(params.sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)))
5961                         return -EINVAL;
5962                 /* Can only add if TDLS ... */
5963                 if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS))
5964                         return -EOPNOTSUPP;
5965                 /* ... with external setup is supported */
5966                 if (!(rdev->wiphy.flags & WIPHY_FLAG_TDLS_EXTERNAL_SETUP))
5967                         return -EOPNOTSUPP;
5968                 /*
5969                  * Older wpa_supplicant versions always mark the TDLS peer
5970                  * as authorized, but it shouldn't yet be.
5971                  */
5972                 params.sta_flags_mask &= ~BIT(NL80211_STA_FLAG_AUTHORIZED);
5973                 break;
5974         default:
5975                 return -EOPNOTSUPP;
5976         }
5977
5978         /* be aware of params.vlan when changing code here */
5979
5980         err = rdev_add_station(rdev, dev, mac_addr, &params);
5981
5982         if (params.vlan)
5983                 dev_put(params.vlan);
5984         return err;
5985 }
5986
5987 static int nl80211_del_station(struct sk_buff *skb, struct genl_info *info)
5988 {
5989         struct cfg80211_registered_device *rdev = info->user_ptr[0];
5990         struct net_device *dev = info->user_ptr[1];
5991         struct station_del_parameters params;
5992
5993         memset(&params, 0, sizeof(params));
5994
5995         if (info->attrs[NL80211_ATTR_MAC])
5996                 params.mac = nla_data(info->attrs[NL80211_ATTR_MAC]);
5997
5998         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
5999             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP_VLAN &&
6000             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT &&
6001             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
6002                 return -EINVAL;
6003
6004         if (!rdev->ops->del_station)
6005                 return -EOPNOTSUPP;
6006
6007         if (info->attrs[NL80211_ATTR_MGMT_SUBTYPE]) {
6008                 params.subtype =
6009                         nla_get_u8(info->attrs[NL80211_ATTR_MGMT_SUBTYPE]);
6010                 if (params.subtype != IEEE80211_STYPE_DISASSOC >> 4 &&
6011                     params.subtype != IEEE80211_STYPE_DEAUTH >> 4)
6012                         return -EINVAL;
6013         } else {
6014                 /* Default to Deauthentication frame */
6015                 params.subtype = IEEE80211_STYPE_DEAUTH >> 4;
6016         }
6017
6018         if (info->attrs[NL80211_ATTR_REASON_CODE]) {
6019                 params.reason_code =
6020                         nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]);
6021                 if (params.reason_code == 0)
6022                         return -EINVAL; /* 0 is reserved */
6023         } else {
6024                 /* Default to reason code 2 */
6025                 params.reason_code = WLAN_REASON_PREV_AUTH_NOT_VALID;
6026         }
6027
6028         return rdev_del_station(rdev, dev, &params);
6029 }
6030
6031 static int nl80211_send_mpath(struct sk_buff *msg, u32 portid, u32 seq,
6032                                 int flags, struct net_device *dev,
6033                                 u8 *dst, u8 *next_hop,
6034                                 struct mpath_info *pinfo)
6035 {
6036         void *hdr;
6037         struct nlattr *pinfoattr;
6038
6039         hdr = nl80211hdr_put(msg, portid, seq, flags, NL80211_CMD_NEW_MPATH);
6040         if (!hdr)
6041                 return -1;
6042
6043         if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
6044             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, dst) ||
6045             nla_put(msg, NL80211_ATTR_MPATH_NEXT_HOP, ETH_ALEN, next_hop) ||
6046             nla_put_u32(msg, NL80211_ATTR_GENERATION, pinfo->generation))
6047                 goto nla_put_failure;
6048
6049         pinfoattr = nla_nest_start_noflag(msg, NL80211_ATTR_MPATH_INFO);
6050         if (!pinfoattr)
6051                 goto nla_put_failure;
6052         if ((pinfo->filled & MPATH_INFO_FRAME_QLEN) &&
6053             nla_put_u32(msg, NL80211_MPATH_INFO_FRAME_QLEN,
6054                         pinfo->frame_qlen))
6055                 goto nla_put_failure;
6056         if (((pinfo->filled & MPATH_INFO_SN) &&
6057              nla_put_u32(msg, NL80211_MPATH_INFO_SN, pinfo->sn)) ||
6058             ((pinfo->filled & MPATH_INFO_METRIC) &&
6059              nla_put_u32(msg, NL80211_MPATH_INFO_METRIC,
6060                          pinfo->metric)) ||
6061             ((pinfo->filled & MPATH_INFO_EXPTIME) &&
6062              nla_put_u32(msg, NL80211_MPATH_INFO_EXPTIME,
6063                          pinfo->exptime)) ||
6064             ((pinfo->filled & MPATH_INFO_FLAGS) &&
6065              nla_put_u8(msg, NL80211_MPATH_INFO_FLAGS,
6066                         pinfo->flags)) ||
6067             ((pinfo->filled & MPATH_INFO_DISCOVERY_TIMEOUT) &&
6068              nla_put_u32(msg, NL80211_MPATH_INFO_DISCOVERY_TIMEOUT,
6069                          pinfo->discovery_timeout)) ||
6070             ((pinfo->filled & MPATH_INFO_DISCOVERY_RETRIES) &&
6071              nla_put_u8(msg, NL80211_MPATH_INFO_DISCOVERY_RETRIES,
6072                         pinfo->discovery_retries)) ||
6073             ((pinfo->filled & MPATH_INFO_HOP_COUNT) &&
6074              nla_put_u8(msg, NL80211_MPATH_INFO_HOP_COUNT,
6075                         pinfo->hop_count)) ||
6076             ((pinfo->filled & MPATH_INFO_PATH_CHANGE) &&
6077              nla_put_u32(msg, NL80211_MPATH_INFO_PATH_CHANGE,
6078                          pinfo->path_change_count)))
6079                 goto nla_put_failure;
6080
6081         nla_nest_end(msg, pinfoattr);
6082
6083         genlmsg_end(msg, hdr);
6084         return 0;
6085
6086  nla_put_failure:
6087         genlmsg_cancel(msg, hdr);
6088         return -EMSGSIZE;
6089 }
6090
6091 static int nl80211_dump_mpath(struct sk_buff *skb,
6092                               struct netlink_callback *cb)
6093 {
6094         struct mpath_info pinfo;
6095         struct cfg80211_registered_device *rdev;
6096         struct wireless_dev *wdev;
6097         u8 dst[ETH_ALEN];
6098         u8 next_hop[ETH_ALEN];
6099         int path_idx = cb->args[2];
6100         int err;
6101
6102         rtnl_lock();
6103         err = nl80211_prepare_wdev_dump(cb, &rdev, &wdev);
6104         if (err)
6105                 goto out_err;
6106
6107         if (!rdev->ops->dump_mpath) {
6108                 err = -EOPNOTSUPP;
6109                 goto out_err;
6110         }
6111
6112         if (wdev->iftype != NL80211_IFTYPE_MESH_POINT) {
6113                 err = -EOPNOTSUPP;
6114                 goto out_err;
6115         }
6116
6117         while (1) {
6118                 err = rdev_dump_mpath(rdev, wdev->netdev, path_idx, dst,
6119                                       next_hop, &pinfo);
6120                 if (err == -ENOENT)
6121                         break;
6122                 if (err)
6123                         goto out_err;
6124
6125                 if (nl80211_send_mpath(skb, NETLINK_CB(cb->skb).portid,
6126                                        cb->nlh->nlmsg_seq, NLM_F_MULTI,
6127                                        wdev->netdev, dst, next_hop,
6128                                        &pinfo) < 0)
6129                         goto out;
6130
6131                 path_idx++;
6132         }
6133
6134  out:
6135         cb->args[2] = path_idx;
6136         err = skb->len;
6137  out_err:
6138         rtnl_unlock();
6139         return err;
6140 }
6141
6142 static int nl80211_get_mpath(struct sk_buff *skb, struct genl_info *info)
6143 {
6144         struct cfg80211_registered_device *rdev = info->user_ptr[0];
6145         int err;
6146         struct net_device *dev = info->user_ptr[1];
6147         struct mpath_info pinfo;
6148         struct sk_buff *msg;
6149         u8 *dst = NULL;
6150         u8 next_hop[ETH_ALEN];
6151
6152         memset(&pinfo, 0, sizeof(pinfo));
6153
6154         if (!info->attrs[NL80211_ATTR_MAC])
6155                 return -EINVAL;
6156
6157         dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
6158
6159         if (!rdev->ops->get_mpath)
6160                 return -EOPNOTSUPP;
6161
6162         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT)
6163                 return -EOPNOTSUPP;
6164
6165         err = rdev_get_mpath(rdev, dev, dst, next_hop, &pinfo);
6166         if (err)
6167                 return err;
6168
6169         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
6170         if (!msg)
6171                 return -ENOMEM;
6172
6173         if (nl80211_send_mpath(msg, info->snd_portid, info->snd_seq, 0,
6174                                  dev, dst, next_hop, &pinfo) < 0) {
6175                 nlmsg_free(msg);
6176                 return -ENOBUFS;
6177         }
6178
6179         return genlmsg_reply(msg, info);
6180 }
6181
6182 static int nl80211_set_mpath(struct sk_buff *skb, struct genl_info *info)
6183 {
6184         struct cfg80211_registered_device *rdev = info->user_ptr[0];
6185         struct net_device *dev = info->user_ptr[1];
6186         u8 *dst = NULL;
6187         u8 *next_hop = NULL;
6188
6189         if (!info->attrs[NL80211_ATTR_MAC])
6190                 return -EINVAL;
6191
6192         if (!info->attrs[NL80211_ATTR_MPATH_NEXT_HOP])
6193                 return -EINVAL;
6194
6195         dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
6196         next_hop = nla_data(info->attrs[NL80211_ATTR_MPATH_NEXT_HOP]);
6197
6198         if (!rdev->ops->change_mpath)
6199                 return -EOPNOTSUPP;
6200
6201         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT)
6202                 return -EOPNOTSUPP;
6203
6204         return rdev_change_mpath(rdev, dev, dst, next_hop);
6205 }
6206
6207 static int nl80211_new_mpath(struct sk_buff *skb, struct genl_info *info)
6208 {
6209         struct cfg80211_registered_device *rdev = info->user_ptr[0];
6210         struct net_device *dev = info->user_ptr[1];
6211         u8 *dst = NULL;
6212         u8 *next_hop = NULL;
6213
6214         if (!info->attrs[NL80211_ATTR_MAC])
6215                 return -EINVAL;
6216
6217         if (!info->attrs[NL80211_ATTR_MPATH_NEXT_HOP])
6218                 return -EINVAL;
6219
6220         dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
6221         next_hop = nla_data(info->attrs[NL80211_ATTR_MPATH_NEXT_HOP]);
6222
6223         if (!rdev->ops->add_mpath)
6224                 return -EOPNOTSUPP;
6225
6226         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT)
6227                 return -EOPNOTSUPP;
6228
6229         return rdev_add_mpath(rdev, dev, dst, next_hop);
6230 }
6231
6232 static int nl80211_del_mpath(struct sk_buff *skb, struct genl_info *info)
6233 {
6234         struct cfg80211_registered_device *rdev = info->user_ptr[0];
6235         struct net_device *dev = info->user_ptr[1];
6236         u8 *dst = NULL;
6237
6238         if (info->attrs[NL80211_ATTR_MAC])
6239                 dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
6240
6241         if (!rdev->ops->del_mpath)
6242                 return -EOPNOTSUPP;
6243
6244         return rdev_del_mpath(rdev, dev, dst);
6245 }
6246
6247 static int nl80211_get_mpp(struct sk_buff *skb, struct genl_info *info)
6248 {
6249         struct cfg80211_registered_device *rdev = info->user_ptr[0];
6250         int err;
6251         struct net_device *dev = info->user_ptr[1];
6252         struct mpath_info pinfo;
6253         struct sk_buff *msg;
6254         u8 *dst = NULL;
6255         u8 mpp[ETH_ALEN];
6256
6257         memset(&pinfo, 0, sizeof(pinfo));
6258
6259         if (!info->attrs[NL80211_ATTR_MAC])
6260                 return -EINVAL;
6261
6262         dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
6263
6264         if (!rdev->ops->get_mpp)
6265                 return -EOPNOTSUPP;
6266
6267         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT)
6268                 return -EOPNOTSUPP;
6269
6270         err = rdev_get_mpp(rdev, dev, dst, mpp, &pinfo);
6271         if (err)
6272                 return err;
6273
6274         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
6275         if (!msg)
6276                 return -ENOMEM;
6277
6278         if (nl80211_send_mpath(msg, info->snd_portid, info->snd_seq, 0,
6279                                dev, dst, mpp, &pinfo) < 0) {
6280                 nlmsg_free(msg);
6281                 return -ENOBUFS;
6282         }
6283
6284         return genlmsg_reply(msg, info);
6285 }
6286
6287 static int nl80211_dump_mpp(struct sk_buff *skb,
6288                             struct netlink_callback *cb)
6289 {
6290         struct mpath_info pinfo;
6291         struct cfg80211_registered_device *rdev;
6292         struct wireless_dev *wdev;
6293         u8 dst[ETH_ALEN];
6294         u8 mpp[ETH_ALEN];
6295         int path_idx = cb->args[2];
6296         int err;
6297
6298         rtnl_lock();
6299         err = nl80211_prepare_wdev_dump(cb, &rdev, &wdev);
6300         if (err)
6301                 goto out_err;
6302
6303         if (!rdev->ops->dump_mpp) {
6304                 err = -EOPNOTSUPP;
6305                 goto out_err;
6306         }
6307
6308         if (wdev->iftype != NL80211_IFTYPE_MESH_POINT) {
6309                 err = -EOPNOTSUPP;
6310                 goto out_err;
6311         }
6312
6313         while (1) {
6314                 err = rdev_dump_mpp(rdev, wdev->netdev, path_idx, dst,
6315                                     mpp, &pinfo);
6316                 if (err == -ENOENT)
6317                         break;
6318                 if (err)
6319                         goto out_err;
6320
6321                 if (nl80211_send_mpath(skb, NETLINK_CB(cb->skb).portid,
6322                                        cb->nlh->nlmsg_seq, NLM_F_MULTI,
6323                                        wdev->netdev, dst, mpp,
6324                                        &pinfo) < 0)
6325                         goto out;
6326
6327                 path_idx++;
6328         }
6329
6330  out:
6331         cb->args[2] = path_idx;
6332         err = skb->len;
6333  out_err:
6334         rtnl_unlock();
6335         return err;
6336 }
6337
6338 static int nl80211_set_bss(struct sk_buff *skb, struct genl_info *info)
6339 {
6340         struct cfg80211_registered_device *rdev = info->user_ptr[0];
6341         struct net_device *dev = info->user_ptr[1];
6342         struct wireless_dev *wdev = dev->ieee80211_ptr;
6343         struct bss_parameters params;
6344         int err;
6345
6346         memset(&params, 0, sizeof(params));
6347         /* default to not changing parameters */
6348         params.use_cts_prot = -1;
6349         params.use_short_preamble = -1;
6350         params.use_short_slot_time = -1;
6351         params.ap_isolate = -1;
6352         params.ht_opmode = -1;
6353         params.p2p_ctwindow = -1;
6354         params.p2p_opp_ps = -1;
6355
6356         if (info->attrs[NL80211_ATTR_BSS_CTS_PROT])
6357                 params.use_cts_prot =
6358                     nla_get_u8(info->attrs[NL80211_ATTR_BSS_CTS_PROT]);
6359         if (info->attrs[NL80211_ATTR_BSS_SHORT_PREAMBLE])
6360                 params.use_short_preamble =
6361                     nla_get_u8(info->attrs[NL80211_ATTR_BSS_SHORT_PREAMBLE]);
6362         if (info->attrs[NL80211_ATTR_BSS_SHORT_SLOT_TIME])
6363                 params.use_short_slot_time =
6364                     nla_get_u8(info->attrs[NL80211_ATTR_BSS_SHORT_SLOT_TIME]);
6365         if (info->attrs[NL80211_ATTR_BSS_BASIC_RATES]) {
6366                 params.basic_rates =
6367                         nla_data(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
6368                 params.basic_rates_len =
6369                         nla_len(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
6370         }
6371         if (info->attrs[NL80211_ATTR_AP_ISOLATE])
6372                 params.ap_isolate = !!nla_get_u8(info->attrs[NL80211_ATTR_AP_ISOLATE]);
6373         if (info->attrs[NL80211_ATTR_BSS_HT_OPMODE])
6374                 params.ht_opmode =
6375                         nla_get_u16(info->attrs[NL80211_ATTR_BSS_HT_OPMODE]);
6376
6377         if (info->attrs[NL80211_ATTR_P2P_CTWINDOW]) {
6378                 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
6379                         return -EINVAL;
6380                 params.p2p_ctwindow =
6381                         nla_get_u8(info->attrs[NL80211_ATTR_P2P_CTWINDOW]);
6382                 if (params.p2p_ctwindow != 0 &&
6383                     !(rdev->wiphy.features & NL80211_FEATURE_P2P_GO_CTWIN))
6384                         return -EINVAL;
6385         }
6386
6387         if (info->attrs[NL80211_ATTR_P2P_OPPPS]) {
6388                 u8 tmp;
6389
6390                 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
6391                         return -EINVAL;
6392                 tmp = nla_get_u8(info->attrs[NL80211_ATTR_P2P_OPPPS]);
6393                 params.p2p_opp_ps = tmp;
6394                 if (params.p2p_opp_ps &&
6395                     !(rdev->wiphy.features & NL80211_FEATURE_P2P_GO_OPPPS))
6396                         return -EINVAL;
6397         }
6398
6399         if (!rdev->ops->change_bss)
6400                 return -EOPNOTSUPP;
6401
6402         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
6403             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
6404                 return -EOPNOTSUPP;
6405
6406         wdev_lock(wdev);
6407         err = rdev_change_bss(rdev, dev, &params);
6408         wdev_unlock(wdev);
6409
6410         return err;
6411 }
6412
6413 static int nl80211_req_set_reg(struct sk_buff *skb, struct genl_info *info)
6414 {
6415         char *data = NULL;
6416         bool is_indoor;
6417         enum nl80211_user_reg_hint_type user_reg_hint_type;
6418         u32 owner_nlportid;
6419
6420         /*
6421          * You should only get this when cfg80211 hasn't yet initialized
6422          * completely when built-in to the kernel right between the time
6423          * window between nl80211_init() and regulatory_init(), if that is
6424          * even possible.
6425          */
6426         if (unlikely(!rcu_access_pointer(cfg80211_regdomain)))
6427                 return -EINPROGRESS;
6428
6429         if (info->attrs[NL80211_ATTR_USER_REG_HINT_TYPE])
6430                 user_reg_hint_type =
6431                   nla_get_u32(info->attrs[NL80211_ATTR_USER_REG_HINT_TYPE]);
6432         else
6433                 user_reg_hint_type = NL80211_USER_REG_HINT_USER;
6434
6435         switch (user_reg_hint_type) {
6436         case NL80211_USER_REG_HINT_USER:
6437         case NL80211_USER_REG_HINT_CELL_BASE:
6438                 if (!info->attrs[NL80211_ATTR_REG_ALPHA2])
6439                         return -EINVAL;
6440
6441                 data = nla_data(info->attrs[NL80211_ATTR_REG_ALPHA2]);
6442                 return regulatory_hint_user(data, user_reg_hint_type);
6443         case NL80211_USER_REG_HINT_INDOOR:
6444                 if (info->attrs[NL80211_ATTR_SOCKET_OWNER]) {
6445                         owner_nlportid = info->snd_portid;
6446                         is_indoor = !!info->attrs[NL80211_ATTR_REG_INDOOR];
6447                 } else {
6448                         owner_nlportid = 0;
6449                         is_indoor = true;
6450                 }
6451
6452                 return regulatory_hint_indoor(is_indoor, owner_nlportid);
6453         default:
6454                 return -EINVAL;
6455         }
6456 }
6457
6458 static int nl80211_reload_regdb(struct sk_buff *skb, struct genl_info *info)
6459 {
6460         return reg_reload_regdb();
6461 }
6462
6463 static int nl80211_get_mesh_config(struct sk_buff *skb,
6464                                    struct genl_info *info)
6465 {
6466         struct cfg80211_registered_device *rdev = info->user_ptr[0];
6467         struct net_device *dev = info->user_ptr[1];
6468         struct wireless_dev *wdev = dev->ieee80211_ptr;
6469         struct mesh_config cur_params;
6470         int err = 0;
6471         void *hdr;
6472         struct nlattr *pinfoattr;
6473         struct sk_buff *msg;
6474
6475         if (wdev->iftype != NL80211_IFTYPE_MESH_POINT)
6476                 return -EOPNOTSUPP;
6477
6478         if (!rdev->ops->get_mesh_config)
6479                 return -EOPNOTSUPP;
6480
6481         wdev_lock(wdev);
6482         /* If not connected, get default parameters */
6483         if (!wdev->mesh_id_len)
6484                 memcpy(&cur_params, &default_mesh_config, sizeof(cur_params));
6485         else
6486                 err = rdev_get_mesh_config(rdev, dev, &cur_params);
6487         wdev_unlock(wdev);
6488
6489         if (err)
6490                 return err;
6491
6492         /* Draw up a netlink message to send back */
6493         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
6494         if (!msg)
6495                 return -ENOMEM;
6496         hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
6497                              NL80211_CMD_GET_MESH_CONFIG);
6498         if (!hdr)
6499                 goto out;
6500         pinfoattr = nla_nest_start_noflag(msg, NL80211_ATTR_MESH_CONFIG);
6501         if (!pinfoattr)
6502                 goto nla_put_failure;
6503         if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
6504             nla_put_u16(msg, NL80211_MESHCONF_RETRY_TIMEOUT,
6505                         cur_params.dot11MeshRetryTimeout) ||
6506             nla_put_u16(msg, NL80211_MESHCONF_CONFIRM_TIMEOUT,
6507                         cur_params.dot11MeshConfirmTimeout) ||
6508             nla_put_u16(msg, NL80211_MESHCONF_HOLDING_TIMEOUT,
6509                         cur_params.dot11MeshHoldingTimeout) ||
6510             nla_put_u16(msg, NL80211_MESHCONF_MAX_PEER_LINKS,
6511                         cur_params.dot11MeshMaxPeerLinks) ||
6512             nla_put_u8(msg, NL80211_MESHCONF_MAX_RETRIES,
6513                        cur_params.dot11MeshMaxRetries) ||
6514             nla_put_u8(msg, NL80211_MESHCONF_TTL,
6515                        cur_params.dot11MeshTTL) ||
6516             nla_put_u8(msg, NL80211_MESHCONF_ELEMENT_TTL,
6517                        cur_params.element_ttl) ||
6518             nla_put_u8(msg, NL80211_MESHCONF_AUTO_OPEN_PLINKS,
6519                        cur_params.auto_open_plinks) ||
6520             nla_put_u32(msg, NL80211_MESHCONF_SYNC_OFFSET_MAX_NEIGHBOR,
6521                         cur_params.dot11MeshNbrOffsetMaxNeighbor) ||
6522             nla_put_u8(msg, NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES,
6523                        cur_params.dot11MeshHWMPmaxPREQretries) ||
6524             nla_put_u32(msg, NL80211_MESHCONF_PATH_REFRESH_TIME,
6525                         cur_params.path_refresh_time) ||
6526             nla_put_u16(msg, NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT,
6527                         cur_params.min_discovery_timeout) ||
6528             nla_put_u32(msg, NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT,
6529                         cur_params.dot11MeshHWMPactivePathTimeout) ||
6530             nla_put_u16(msg, NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL,
6531                         cur_params.dot11MeshHWMPpreqMinInterval) ||
6532             nla_put_u16(msg, NL80211_MESHCONF_HWMP_PERR_MIN_INTERVAL,
6533                         cur_params.dot11MeshHWMPperrMinInterval) ||
6534             nla_put_u16(msg, NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME,
6535                         cur_params.dot11MeshHWMPnetDiameterTraversalTime) ||
6536             nla_put_u8(msg, NL80211_MESHCONF_HWMP_ROOTMODE,
6537                        cur_params.dot11MeshHWMPRootMode) ||
6538             nla_put_u16(msg, NL80211_MESHCONF_HWMP_RANN_INTERVAL,
6539                         cur_params.dot11MeshHWMPRannInterval) ||
6540             nla_put_u8(msg, NL80211_MESHCONF_GATE_ANNOUNCEMENTS,
6541                        cur_params.dot11MeshGateAnnouncementProtocol) ||
6542             nla_put_u8(msg, NL80211_MESHCONF_FORWARDING,
6543                        cur_params.dot11MeshForwarding) ||
6544             nla_put_s32(msg, NL80211_MESHCONF_RSSI_THRESHOLD,
6545                         cur_params.rssi_threshold) ||
6546             nla_put_u32(msg, NL80211_MESHCONF_HT_OPMODE,
6547                         cur_params.ht_opmode) ||
6548             nla_put_u32(msg, NL80211_MESHCONF_HWMP_PATH_TO_ROOT_TIMEOUT,
6549                         cur_params.dot11MeshHWMPactivePathToRootTimeout) ||
6550             nla_put_u16(msg, NL80211_MESHCONF_HWMP_ROOT_INTERVAL,
6551                         cur_params.dot11MeshHWMProotInterval) ||
6552             nla_put_u16(msg, NL80211_MESHCONF_HWMP_CONFIRMATION_INTERVAL,
6553                         cur_params.dot11MeshHWMPconfirmationInterval) ||
6554             nla_put_u32(msg, NL80211_MESHCONF_POWER_MODE,
6555                         cur_params.power_mode) ||
6556             nla_put_u16(msg, NL80211_MESHCONF_AWAKE_WINDOW,
6557                         cur_params.dot11MeshAwakeWindowDuration) ||
6558             nla_put_u32(msg, NL80211_MESHCONF_PLINK_TIMEOUT,
6559                         cur_params.plink_timeout) ||
6560             nla_put_u8(msg, NL80211_MESHCONF_CONNECTED_TO_GATE,
6561                        cur_params.dot11MeshConnectedToMeshGate))
6562                 goto nla_put_failure;
6563         nla_nest_end(msg, pinfoattr);
6564         genlmsg_end(msg, hdr);
6565         return genlmsg_reply(msg, info);
6566
6567  nla_put_failure:
6568  out:
6569         nlmsg_free(msg);
6570         return -ENOBUFS;
6571 }
6572
6573 static const struct nla_policy
6574 nl80211_meshconf_params_policy[NL80211_MESHCONF_ATTR_MAX+1] = {
6575         [NL80211_MESHCONF_RETRY_TIMEOUT] =
6576                 NLA_POLICY_RANGE(NLA_U16, 1, 255),
6577         [NL80211_MESHCONF_CONFIRM_TIMEOUT] =
6578                 NLA_POLICY_RANGE(NLA_U16, 1, 255),
6579         [NL80211_MESHCONF_HOLDING_TIMEOUT] =
6580                 NLA_POLICY_RANGE(NLA_U16, 1, 255),
6581         [NL80211_MESHCONF_MAX_PEER_LINKS] =
6582                 NLA_POLICY_RANGE(NLA_U16, 0, 255),
6583         [NL80211_MESHCONF_MAX_RETRIES] = NLA_POLICY_MAX(NLA_U8, 16),
6584         [NL80211_MESHCONF_TTL] = NLA_POLICY_MIN(NLA_U8, 1),
6585         [NL80211_MESHCONF_ELEMENT_TTL] = NLA_POLICY_MIN(NLA_U8, 1),
6586         [NL80211_MESHCONF_AUTO_OPEN_PLINKS] = NLA_POLICY_MAX(NLA_U8, 1),
6587         [NL80211_MESHCONF_SYNC_OFFSET_MAX_NEIGHBOR] =
6588                 NLA_POLICY_RANGE(NLA_U32, 1, 255),
6589         [NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES] = { .type = NLA_U8 },
6590         [NL80211_MESHCONF_PATH_REFRESH_TIME] = { .type = NLA_U32 },
6591         [NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT] = NLA_POLICY_MIN(NLA_U16, 1),
6592         [NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT] = { .type = NLA_U32 },
6593         [NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL] =
6594                 NLA_POLICY_MIN(NLA_U16, 1),
6595         [NL80211_MESHCONF_HWMP_PERR_MIN_INTERVAL] =
6596                 NLA_POLICY_MIN(NLA_U16, 1),
6597         [NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME] =
6598                 NLA_POLICY_MIN(NLA_U16, 1),
6599         [NL80211_MESHCONF_HWMP_ROOTMODE] = NLA_POLICY_MAX(NLA_U8, 4),
6600         [NL80211_MESHCONF_HWMP_RANN_INTERVAL] =
6601                 NLA_POLICY_MIN(NLA_U16, 1),
6602         [NL80211_MESHCONF_GATE_ANNOUNCEMENTS] = NLA_POLICY_MAX(NLA_U8, 1),
6603         [NL80211_MESHCONF_FORWARDING] = NLA_POLICY_MAX(NLA_U8, 1),
6604         [NL80211_MESHCONF_RSSI_THRESHOLD] =
6605                 NLA_POLICY_RANGE(NLA_S32, -255, 0),
6606         [NL80211_MESHCONF_HT_OPMODE] = { .type = NLA_U16 },
6607         [NL80211_MESHCONF_HWMP_PATH_TO_ROOT_TIMEOUT] = { .type = NLA_U32 },
6608         [NL80211_MESHCONF_HWMP_ROOT_INTERVAL] =
6609                 NLA_POLICY_MIN(NLA_U16, 1),
6610         [NL80211_MESHCONF_HWMP_CONFIRMATION_INTERVAL] =
6611                 NLA_POLICY_MIN(NLA_U16, 1),
6612         [NL80211_MESHCONF_POWER_MODE] =
6613                 NLA_POLICY_RANGE(NLA_U32,
6614                                  NL80211_MESH_POWER_ACTIVE,
6615                                  NL80211_MESH_POWER_MAX),
6616         [NL80211_MESHCONF_AWAKE_WINDOW] = { .type = NLA_U16 },
6617         [NL80211_MESHCONF_PLINK_TIMEOUT] = { .type = NLA_U32 },
6618         [NL80211_MESHCONF_CONNECTED_TO_GATE] = NLA_POLICY_RANGE(NLA_U8, 0, 1),
6619 };
6620
6621 static const struct nla_policy
6622         nl80211_mesh_setup_params_policy[NL80211_MESH_SETUP_ATTR_MAX+1] = {
6623         [NL80211_MESH_SETUP_ENABLE_VENDOR_SYNC] = { .type = NLA_U8 },
6624         [NL80211_MESH_SETUP_ENABLE_VENDOR_PATH_SEL] = { .type = NLA_U8 },
6625         [NL80211_MESH_SETUP_ENABLE_VENDOR_METRIC] = { .type = NLA_U8 },
6626         [NL80211_MESH_SETUP_USERSPACE_AUTH] = { .type = NLA_FLAG },
6627         [NL80211_MESH_SETUP_AUTH_PROTOCOL] = { .type = NLA_U8 },
6628         [NL80211_MESH_SETUP_USERSPACE_MPM] = { .type = NLA_FLAG },
6629         [NL80211_MESH_SETUP_IE] =
6630                 NLA_POLICY_VALIDATE_FN(NLA_BINARY, validate_ie_attr,
6631                                        IEEE80211_MAX_DATA_LEN),
6632         [NL80211_MESH_SETUP_USERSPACE_AMPE] = { .type = NLA_FLAG },
6633 };
6634
6635 static int nl80211_parse_mesh_config(struct genl_info *info,
6636                                      struct mesh_config *cfg,
6637                                      u32 *mask_out)
6638 {
6639         struct nlattr *tb[NL80211_MESHCONF_ATTR_MAX + 1];
6640         u32 mask = 0;
6641         u16 ht_opmode;
6642
6643 #define FILL_IN_MESH_PARAM_IF_SET(tb, cfg, param, mask, attr, fn)       \
6644 do {                                                                    \
6645         if (tb[attr]) {                                                 \
6646                 cfg->param = fn(tb[attr]);                              \
6647                 mask |= BIT((attr) - 1);                                \
6648         }                                                               \
6649 } while (0)
6650
6651         if (!info->attrs[NL80211_ATTR_MESH_CONFIG])
6652                 return -EINVAL;
6653         if (nla_parse_nested_deprecated(tb, NL80211_MESHCONF_ATTR_MAX, info->attrs[NL80211_ATTR_MESH_CONFIG], nl80211_meshconf_params_policy, info->extack))
6654                 return -EINVAL;
6655
6656         /* This makes sure that there aren't more than 32 mesh config
6657          * parameters (otherwise our bitfield scheme would not work.) */
6658         BUILD_BUG_ON(NL80211_MESHCONF_ATTR_MAX > 32);
6659
6660         /* Fill in the params struct */
6661         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshRetryTimeout, mask,
6662                                   NL80211_MESHCONF_RETRY_TIMEOUT, nla_get_u16);
6663         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshConfirmTimeout, mask,
6664                                   NL80211_MESHCONF_CONFIRM_TIMEOUT,
6665                                   nla_get_u16);
6666         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHoldingTimeout, mask,
6667                                   NL80211_MESHCONF_HOLDING_TIMEOUT,
6668                                   nla_get_u16);
6669         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshMaxPeerLinks, mask,
6670                                   NL80211_MESHCONF_MAX_PEER_LINKS,
6671                                   nla_get_u16);
6672         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshMaxRetries, mask,
6673                                   NL80211_MESHCONF_MAX_RETRIES, nla_get_u8);
6674         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshTTL, mask,
6675                                   NL80211_MESHCONF_TTL, nla_get_u8);
6676         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, element_ttl, mask,
6677                                   NL80211_MESHCONF_ELEMENT_TTL, nla_get_u8);
6678         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, auto_open_plinks, mask,
6679                                   NL80211_MESHCONF_AUTO_OPEN_PLINKS,
6680                                   nla_get_u8);
6681         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshNbrOffsetMaxNeighbor,
6682                                   mask,
6683                                   NL80211_MESHCONF_SYNC_OFFSET_MAX_NEIGHBOR,
6684                                   nla_get_u32);
6685         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPmaxPREQretries, mask,
6686                                   NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES,
6687                                   nla_get_u8);
6688         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, path_refresh_time, mask,
6689                                   NL80211_MESHCONF_PATH_REFRESH_TIME,
6690                                   nla_get_u32);
6691         if (mask & BIT(NL80211_MESHCONF_PATH_REFRESH_TIME) &&
6692             (cfg->path_refresh_time < 1 || cfg->path_refresh_time > 65535))
6693                 return -EINVAL;
6694         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, min_discovery_timeout, mask,
6695                                   NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT,
6696                                   nla_get_u16);
6697         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPactivePathTimeout,
6698                                   mask,
6699                                   NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT,
6700                                   nla_get_u32);
6701         if (mask & BIT(NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT) &&
6702             (cfg->dot11MeshHWMPactivePathTimeout < 1 ||
6703              cfg->dot11MeshHWMPactivePathTimeout > 65535))
6704                 return -EINVAL;
6705         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPpreqMinInterval, mask,
6706                                   NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL,
6707                                   nla_get_u16);
6708         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPperrMinInterval, mask,
6709                                   NL80211_MESHCONF_HWMP_PERR_MIN_INTERVAL,
6710                                   nla_get_u16);
6711         FILL_IN_MESH_PARAM_IF_SET(tb, cfg,
6712                                   dot11MeshHWMPnetDiameterTraversalTime, mask,
6713                                   NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME,
6714                                   nla_get_u16);
6715         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPRootMode, mask,
6716                                   NL80211_MESHCONF_HWMP_ROOTMODE, nla_get_u8);
6717         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPRannInterval, mask,
6718                                   NL80211_MESHCONF_HWMP_RANN_INTERVAL,
6719                                   nla_get_u16);
6720         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshGateAnnouncementProtocol,
6721                                   mask, NL80211_MESHCONF_GATE_ANNOUNCEMENTS,
6722                                   nla_get_u8);
6723         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshForwarding, mask,
6724                                   NL80211_MESHCONF_FORWARDING, nla_get_u8);
6725         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, rssi_threshold, mask,
6726                                   NL80211_MESHCONF_RSSI_THRESHOLD,
6727                                   nla_get_s32);
6728         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshConnectedToMeshGate, mask,
6729                                   NL80211_MESHCONF_CONNECTED_TO_GATE,
6730                                   nla_get_u8);
6731         /*
6732          * Check HT operation mode based on
6733          * IEEE 802.11-2016 9.4.2.57 HT Operation element.
6734          */
6735         if (tb[NL80211_MESHCONF_HT_OPMODE]) {
6736                 ht_opmode = nla_get_u16(tb[NL80211_MESHCONF_HT_OPMODE]);
6737
6738                 if (ht_opmode & ~(IEEE80211_HT_OP_MODE_PROTECTION |
6739                                   IEEE80211_HT_OP_MODE_NON_GF_STA_PRSNT |
6740                                   IEEE80211_HT_OP_MODE_NON_HT_STA_PRSNT))
6741                         return -EINVAL;
6742
6743                 /* NON_HT_STA bit is reserved, but some programs set it */
6744                 ht_opmode &= ~IEEE80211_HT_OP_MODE_NON_HT_STA_PRSNT;
6745
6746                 cfg->ht_opmode = ht_opmode;
6747                 mask |= (1 << (NL80211_MESHCONF_HT_OPMODE - 1));
6748         }
6749         FILL_IN_MESH_PARAM_IF_SET(tb, cfg,
6750                                   dot11MeshHWMPactivePathToRootTimeout, mask,
6751                                   NL80211_MESHCONF_HWMP_PATH_TO_ROOT_TIMEOUT,
6752                                   nla_get_u32);
6753         if (mask & BIT(NL80211_MESHCONF_HWMP_PATH_TO_ROOT_TIMEOUT) &&
6754             (cfg->dot11MeshHWMPactivePathToRootTimeout < 1 ||
6755              cfg->dot11MeshHWMPactivePathToRootTimeout > 65535))
6756                 return -EINVAL;
6757         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMProotInterval, mask,
6758                                   NL80211_MESHCONF_HWMP_ROOT_INTERVAL,
6759                                   nla_get_u16);
6760         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPconfirmationInterval,
6761                                   mask,
6762                                   NL80211_MESHCONF_HWMP_CONFIRMATION_INTERVAL,
6763                                   nla_get_u16);
6764         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, power_mode, mask,
6765                                   NL80211_MESHCONF_POWER_MODE, nla_get_u32);
6766         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshAwakeWindowDuration, mask,
6767                                   NL80211_MESHCONF_AWAKE_WINDOW, nla_get_u16);
6768         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, plink_timeout, mask,
6769                                   NL80211_MESHCONF_PLINK_TIMEOUT, nla_get_u32);
6770         if (mask_out)
6771                 *mask_out = mask;
6772
6773         return 0;
6774
6775 #undef FILL_IN_MESH_PARAM_IF_SET
6776 }
6777
6778 static int nl80211_parse_mesh_setup(struct genl_info *info,
6779                                      struct mesh_setup *setup)
6780 {
6781         struct cfg80211_registered_device *rdev = info->user_ptr[0];
6782         struct nlattr *tb[NL80211_MESH_SETUP_ATTR_MAX + 1];
6783
6784         if (!info->attrs[NL80211_ATTR_MESH_SETUP])
6785                 return -EINVAL;
6786         if (nla_parse_nested_deprecated(tb, NL80211_MESH_SETUP_ATTR_MAX, info->attrs[NL80211_ATTR_MESH_SETUP], nl80211_mesh_setup_params_policy, info->extack))
6787                 return -EINVAL;
6788
6789         if (tb[NL80211_MESH_SETUP_ENABLE_VENDOR_SYNC])
6790                 setup->sync_method =
6791                 (nla_get_u8(tb[NL80211_MESH_SETUP_ENABLE_VENDOR_SYNC])) ?
6792                  IEEE80211_SYNC_METHOD_VENDOR :
6793                  IEEE80211_SYNC_METHOD_NEIGHBOR_OFFSET;
6794
6795         if (tb[NL80211_MESH_SETUP_ENABLE_VENDOR_PATH_SEL])
6796                 setup->path_sel_proto =
6797                 (nla_get_u8(tb[NL80211_MESH_SETUP_ENABLE_VENDOR_PATH_SEL])) ?
6798                  IEEE80211_PATH_PROTOCOL_VENDOR :
6799                  IEEE80211_PATH_PROTOCOL_HWMP;
6800
6801         if (tb[NL80211_MESH_SETUP_ENABLE_VENDOR_METRIC])
6802                 setup->path_metric =
6803                 (nla_get_u8(tb[NL80211_MESH_SETUP_ENABLE_VENDOR_METRIC])) ?
6804                  IEEE80211_PATH_METRIC_VENDOR :
6805                  IEEE80211_PATH_METRIC_AIRTIME;
6806
6807         if (tb[NL80211_MESH_SETUP_IE]) {
6808                 struct nlattr *ieattr =
6809                         tb[NL80211_MESH_SETUP_IE];
6810                 setup->ie = nla_data(ieattr);
6811                 setup->ie_len = nla_len(ieattr);
6812         }
6813         if (tb[NL80211_MESH_SETUP_USERSPACE_MPM] &&
6814             !(rdev->wiphy.features & NL80211_FEATURE_USERSPACE_MPM))
6815                 return -EINVAL;
6816         setup->user_mpm = nla_get_flag(tb[NL80211_MESH_SETUP_USERSPACE_MPM]);
6817         setup->is_authenticated = nla_get_flag(tb[NL80211_MESH_SETUP_USERSPACE_AUTH]);
6818         setup->is_secure = nla_get_flag(tb[NL80211_MESH_SETUP_USERSPACE_AMPE]);
6819         if (setup->is_secure)
6820                 setup->user_mpm = true;
6821
6822         if (tb[NL80211_MESH_SETUP_AUTH_PROTOCOL]) {
6823                 if (!setup->user_mpm)
6824                         return -EINVAL;
6825                 setup->auth_id =
6826                         nla_get_u8(tb[NL80211_MESH_SETUP_AUTH_PROTOCOL]);
6827         }
6828
6829         return 0;
6830 }
6831
6832 static int nl80211_update_mesh_config(struct sk_buff *skb,
6833                                       struct genl_info *info)
6834 {
6835         struct cfg80211_registered_device *rdev = info->user_ptr[0];
6836         struct net_device *dev = info->user_ptr[1];
6837         struct wireless_dev *wdev = dev->ieee80211_ptr;
6838         struct mesh_config cfg;
6839         u32 mask;
6840         int err;
6841
6842         if (wdev->iftype != NL80211_IFTYPE_MESH_POINT)
6843                 return -EOPNOTSUPP;
6844
6845         if (!rdev->ops->update_mesh_config)
6846                 return -EOPNOTSUPP;
6847
6848         err = nl80211_parse_mesh_config(info, &cfg, &mask);
6849         if (err)
6850                 return err;
6851
6852         wdev_lock(wdev);
6853         if (!wdev->mesh_id_len)
6854                 err = -ENOLINK;
6855
6856         if (!err)
6857                 err = rdev_update_mesh_config(rdev, dev, mask, &cfg);
6858
6859         wdev_unlock(wdev);
6860
6861         return err;
6862 }
6863
6864 static int nl80211_put_regdom(const struct ieee80211_regdomain *regdom,
6865                               struct sk_buff *msg)
6866 {
6867         struct nlattr *nl_reg_rules;
6868         unsigned int i;
6869
6870         if (nla_put_string(msg, NL80211_ATTR_REG_ALPHA2, regdom->alpha2) ||
6871             (regdom->dfs_region &&
6872              nla_put_u8(msg, NL80211_ATTR_DFS_REGION, regdom->dfs_region)))
6873                 goto nla_put_failure;
6874
6875         nl_reg_rules = nla_nest_start_noflag(msg, NL80211_ATTR_REG_RULES);
6876         if (!nl_reg_rules)
6877                 goto nla_put_failure;
6878
6879         for (i = 0; i < regdom->n_reg_rules; i++) {
6880                 struct nlattr *nl_reg_rule;
6881                 const struct ieee80211_reg_rule *reg_rule;
6882                 const struct ieee80211_freq_range *freq_range;
6883                 const struct ieee80211_power_rule *power_rule;
6884                 unsigned int max_bandwidth_khz;
6885
6886                 reg_rule = &regdom->reg_rules[i];
6887                 freq_range = &reg_rule->freq_range;
6888                 power_rule = &reg_rule->power_rule;
6889
6890                 nl_reg_rule = nla_nest_start_noflag(msg, i);
6891                 if (!nl_reg_rule)
6892                         goto nla_put_failure;
6893
6894                 max_bandwidth_khz = freq_range->max_bandwidth_khz;
6895                 if (!max_bandwidth_khz)
6896                         max_bandwidth_khz = reg_get_max_bandwidth(regdom,
6897                                                                   reg_rule);
6898
6899                 if (nla_put_u32(msg, NL80211_ATTR_REG_RULE_FLAGS,
6900                                 reg_rule->flags) ||
6901                     nla_put_u32(msg, NL80211_ATTR_FREQ_RANGE_START,
6902                                 freq_range->start_freq_khz) ||
6903                     nla_put_u32(msg, NL80211_ATTR_FREQ_RANGE_END,
6904                                 freq_range->end_freq_khz) ||
6905                     nla_put_u32(msg, NL80211_ATTR_FREQ_RANGE_MAX_BW,
6906                                 max_bandwidth_khz) ||
6907                     nla_put_u32(msg, NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN,
6908                                 power_rule->max_antenna_gain) ||
6909                     nla_put_u32(msg, NL80211_ATTR_POWER_RULE_MAX_EIRP,
6910                                 power_rule->max_eirp) ||
6911                     nla_put_u32(msg, NL80211_ATTR_DFS_CAC_TIME,
6912                                 reg_rule->dfs_cac_ms))
6913                         goto nla_put_failure;
6914
6915                 nla_nest_end(msg, nl_reg_rule);
6916         }
6917
6918         nla_nest_end(msg, nl_reg_rules);
6919         return 0;
6920
6921 nla_put_failure:
6922         return -EMSGSIZE;
6923 }
6924
6925 static int nl80211_get_reg_do(struct sk_buff *skb, struct genl_info *info)
6926 {
6927         const struct ieee80211_regdomain *regdom = NULL;
6928         struct cfg80211_registered_device *rdev;
6929         struct wiphy *wiphy = NULL;
6930         struct sk_buff *msg;
6931         void *hdr;
6932
6933         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
6934         if (!msg)
6935                 return -ENOBUFS;
6936
6937         hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
6938                              NL80211_CMD_GET_REG);
6939         if (!hdr)
6940                 goto put_failure;
6941
6942         if (info->attrs[NL80211_ATTR_WIPHY]) {
6943                 bool self_managed;
6944
6945                 rdev = cfg80211_get_dev_from_info(genl_info_net(info), info);
6946                 if (IS_ERR(rdev)) {
6947                         nlmsg_free(msg);
6948                         return PTR_ERR(rdev);
6949                 }
6950
6951                 wiphy = &rdev->wiphy;
6952                 self_managed = wiphy->regulatory_flags &
6953                                REGULATORY_WIPHY_SELF_MANAGED;
6954                 regdom = get_wiphy_regdom(wiphy);
6955
6956                 /* a self-managed-reg device must have a private regdom */
6957                 if (WARN_ON(!regdom && self_managed)) {
6958                         nlmsg_free(msg);
6959                         return -EINVAL;
6960                 }
6961
6962                 if (regdom &&
6963                     nla_put_u32(msg, NL80211_ATTR_WIPHY, get_wiphy_idx(wiphy)))
6964                         goto nla_put_failure;
6965         }
6966
6967         if (!wiphy && reg_last_request_cell_base() &&
6968             nla_put_u32(msg, NL80211_ATTR_USER_REG_HINT_TYPE,
6969                         NL80211_USER_REG_HINT_CELL_BASE))
6970                 goto nla_put_failure;
6971
6972         rcu_read_lock();
6973
6974         if (!regdom)
6975                 regdom = rcu_dereference(cfg80211_regdomain);
6976
6977         if (nl80211_put_regdom(regdom, msg))
6978                 goto nla_put_failure_rcu;
6979
6980         rcu_read_unlock();
6981
6982         genlmsg_end(msg, hdr);
6983         return genlmsg_reply(msg, info);
6984
6985 nla_put_failure_rcu:
6986         rcu_read_unlock();
6987 nla_put_failure:
6988 put_failure:
6989         nlmsg_free(msg);
6990         return -EMSGSIZE;
6991 }
6992
6993 static int nl80211_send_regdom(struct sk_buff *msg, struct netlink_callback *cb,
6994                                u32 seq, int flags, struct wiphy *wiphy,
6995                                const struct ieee80211_regdomain *regdom)
6996 {
6997         void *hdr = nl80211hdr_put(msg, NETLINK_CB(cb->skb).portid, seq, flags,
6998                                    NL80211_CMD_GET_REG);
6999
7000         if (!hdr)
7001                 return -1;
7002
7003         genl_dump_check_consistent(cb, hdr);
7004
7005         if (nl80211_put_regdom(regdom, msg))
7006                 goto nla_put_failure;
7007
7008         if (!wiphy && reg_last_request_cell_base() &&
7009             nla_put_u32(msg, NL80211_ATTR_USER_REG_HINT_TYPE,
7010                         NL80211_USER_REG_HINT_CELL_BASE))
7011                 goto nla_put_failure;
7012
7013         if (wiphy &&
7014             nla_put_u32(msg, NL80211_ATTR_WIPHY, get_wiphy_idx(wiphy)))
7015                 goto nla_put_failure;
7016
7017         if (wiphy && wiphy->regulatory_flags & REGULATORY_WIPHY_SELF_MANAGED &&
7018             nla_put_flag(msg, NL80211_ATTR_WIPHY_SELF_MANAGED_REG))
7019                 goto nla_put_failure;
7020
7021         genlmsg_end(msg, hdr);
7022         return 0;
7023
7024 nla_put_failure:
7025         genlmsg_cancel(msg, hdr);
7026         return -EMSGSIZE;
7027 }
7028
7029 static int nl80211_get_reg_dump(struct sk_buff *skb,
7030                                 struct netlink_callback *cb)
7031 {
7032         const struct ieee80211_regdomain *regdom = NULL;
7033         struct cfg80211_registered_device *rdev;
7034         int err, reg_idx, start = cb->args[2];
7035
7036         rtnl_lock();
7037
7038         if (cfg80211_regdomain && start == 0) {
7039                 err = nl80211_send_regdom(skb, cb, cb->nlh->nlmsg_seq,
7040                                           NLM_F_MULTI, NULL,
7041                                           rtnl_dereference(cfg80211_regdomain));
7042                 if (err < 0)
7043                         goto out_err;
7044         }
7045
7046         /* the global regdom is idx 0 */
7047         reg_idx = 1;
7048         list_for_each_entry(rdev, &cfg80211_rdev_list, list) {
7049                 regdom = get_wiphy_regdom(&rdev->wiphy);
7050                 if (!regdom)
7051                         continue;
7052
7053                 if (++reg_idx <= start)
7054                         continue;
7055
7056                 err = nl80211_send_regdom(skb, cb, cb->nlh->nlmsg_seq,
7057                                           NLM_F_MULTI, &rdev->wiphy, regdom);
7058                 if (err < 0) {
7059                         reg_idx--;
7060                         break;
7061                 }
7062         }
7063
7064         cb->args[2] = reg_idx;
7065         err = skb->len;
7066 out_err:
7067         rtnl_unlock();
7068         return err;
7069 }
7070
7071 #ifdef CONFIG_CFG80211_CRDA_SUPPORT
7072 static const struct nla_policy reg_rule_policy[NL80211_REG_RULE_ATTR_MAX + 1] = {
7073         [NL80211_ATTR_REG_RULE_FLAGS]           = { .type = NLA_U32 },
7074         [NL80211_ATTR_FREQ_RANGE_START]         = { .type = NLA_U32 },
7075         [NL80211_ATTR_FREQ_RANGE_END]           = { .type = NLA_U32 },
7076         [NL80211_ATTR_FREQ_RANGE_MAX_BW]        = { .type = NLA_U32 },
7077         [NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN]  = { .type = NLA_U32 },
7078         [NL80211_ATTR_POWER_RULE_MAX_EIRP]      = { .type = NLA_U32 },
7079         [NL80211_ATTR_DFS_CAC_TIME]             = { .type = NLA_U32 },
7080 };
7081
7082 static int parse_reg_rule(struct nlattr *tb[],
7083         struct ieee80211_reg_rule *reg_rule)
7084 {
7085         struct ieee80211_freq_range *freq_range = &reg_rule->freq_range;
7086         struct ieee80211_power_rule *power_rule = &reg_rule->power_rule;
7087
7088         if (!tb[NL80211_ATTR_REG_RULE_FLAGS])
7089                 return -EINVAL;
7090         if (!tb[NL80211_ATTR_FREQ_RANGE_START])
7091                 return -EINVAL;
7092         if (!tb[NL80211_ATTR_FREQ_RANGE_END])
7093                 return -EINVAL;
7094         if (!tb[NL80211_ATTR_FREQ_RANGE_MAX_BW])
7095                 return -EINVAL;
7096         if (!tb[NL80211_ATTR_POWER_RULE_MAX_EIRP])
7097                 return -EINVAL;
7098
7099         reg_rule->flags = nla_get_u32(tb[NL80211_ATTR_REG_RULE_FLAGS]);
7100
7101         freq_range->start_freq_khz =
7102                 nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_START]);
7103         freq_range->end_freq_khz =
7104                 nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_END]);
7105         freq_range->max_bandwidth_khz =
7106                 nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_MAX_BW]);
7107
7108         power_rule->max_eirp =
7109                 nla_get_u32(tb[NL80211_ATTR_POWER_RULE_MAX_EIRP]);
7110
7111         if (tb[NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN])
7112                 power_rule->max_antenna_gain =
7113                         nla_get_u32(tb[NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN]);
7114
7115         if (tb[NL80211_ATTR_DFS_CAC_TIME])
7116                 reg_rule->dfs_cac_ms =
7117                         nla_get_u32(tb[NL80211_ATTR_DFS_CAC_TIME]);
7118
7119         return 0;
7120 }
7121
7122 static int nl80211_set_reg(struct sk_buff *skb, struct genl_info *info)
7123 {
7124         struct nlattr *tb[NL80211_REG_RULE_ATTR_MAX + 1];
7125         struct nlattr *nl_reg_rule;
7126         char *alpha2;
7127         int rem_reg_rules, r;
7128         u32 num_rules = 0, rule_idx = 0;
7129         enum nl80211_dfs_regions dfs_region = NL80211_DFS_UNSET;
7130         struct ieee80211_regdomain *rd;
7131
7132         if (!info->attrs[NL80211_ATTR_REG_ALPHA2])
7133                 return -EINVAL;
7134
7135         if (!info->attrs[NL80211_ATTR_REG_RULES])
7136                 return -EINVAL;
7137
7138         alpha2 = nla_data(info->attrs[NL80211_ATTR_REG_ALPHA2]);
7139
7140         if (info->attrs[NL80211_ATTR_DFS_REGION])
7141                 dfs_region = nla_get_u8(info->attrs[NL80211_ATTR_DFS_REGION]);
7142
7143         nla_for_each_nested(nl_reg_rule, info->attrs[NL80211_ATTR_REG_RULES],
7144                             rem_reg_rules) {
7145                 num_rules++;
7146                 if (num_rules > NL80211_MAX_SUPP_REG_RULES)
7147                         return -EINVAL;
7148         }
7149
7150         if (!reg_is_valid_request(alpha2))
7151                 return -EINVAL;
7152
7153         rd = kzalloc(struct_size(rd, reg_rules, num_rules), GFP_KERNEL);
7154         if (!rd)
7155                 return -ENOMEM;
7156
7157         rd->n_reg_rules = num_rules;
7158         rd->alpha2[0] = alpha2[0];
7159         rd->alpha2[1] = alpha2[1];
7160
7161         /*
7162          * Disable DFS master mode if the DFS region was
7163          * not supported or known on this kernel.
7164          */
7165         if (reg_supported_dfs_region(dfs_region))
7166                 rd->dfs_region = dfs_region;
7167
7168         nla_for_each_nested(nl_reg_rule, info->attrs[NL80211_ATTR_REG_RULES],
7169                             rem_reg_rules) {
7170                 r = nla_parse_nested_deprecated(tb, NL80211_REG_RULE_ATTR_MAX,
7171                                                 nl_reg_rule, reg_rule_policy,
7172                                                 info->extack);
7173                 if (r)
7174                         goto bad_reg;
7175                 r = parse_reg_rule(tb, &rd->reg_rules[rule_idx]);
7176                 if (r)
7177                         goto bad_reg;
7178
7179                 rule_idx++;
7180
7181                 if (rule_idx > NL80211_MAX_SUPP_REG_RULES) {
7182                         r = -EINVAL;
7183                         goto bad_reg;
7184                 }
7185         }
7186
7187         /* set_regdom takes ownership of rd */
7188         return set_regdom(rd, REGD_SOURCE_CRDA);
7189  bad_reg:
7190         kfree(rd);
7191         return r;
7192 }
7193 #endif /* CONFIG_CFG80211_CRDA_SUPPORT */
7194
7195 static int validate_scan_freqs(struct nlattr *freqs)
7196 {
7197         struct nlattr *attr1, *attr2;
7198         int n_channels = 0, tmp1, tmp2;
7199
7200         nla_for_each_nested(attr1, freqs, tmp1)
7201                 if (nla_len(attr1) != sizeof(u32))
7202                         return 0;
7203
7204         nla_for_each_nested(attr1, freqs, tmp1) {
7205                 n_channels++;
7206                 /*
7207                  * Some hardware has a limited channel list for
7208                  * scanning, and it is pretty much nonsensical
7209                  * to scan for a channel twice, so disallow that
7210                  * and don't require drivers to check that the
7211                  * channel list they get isn't longer than what
7212                  * they can scan, as long as they can scan all
7213                  * the channels they registered at once.
7214                  */
7215                 nla_for_each_nested(attr2, freqs, tmp2)
7216                         if (attr1 != attr2 &&
7217                             nla_get_u32(attr1) == nla_get_u32(attr2))
7218                                 return 0;
7219         }
7220
7221         return n_channels;
7222 }
7223
7224 static bool is_band_valid(struct wiphy *wiphy, enum nl80211_band b)
7225 {
7226         return b < NUM_NL80211_BANDS && wiphy->bands[b];
7227 }
7228
7229 static int parse_bss_select(struct nlattr *nla, struct wiphy *wiphy,
7230                             struct cfg80211_bss_selection *bss_select)
7231 {
7232         struct nlattr *attr[NL80211_BSS_SELECT_ATTR_MAX + 1];
7233         struct nlattr *nest;
7234         int err;
7235         bool found = false;
7236         int i;
7237
7238         /* only process one nested attribute */
7239         nest = nla_data(nla);
7240         if (!nla_ok(nest, nla_len(nest)))
7241                 return -EINVAL;
7242
7243         err = nla_parse_nested_deprecated(attr, NL80211_BSS_SELECT_ATTR_MAX,
7244                                           nest, nl80211_bss_select_policy,
7245                                           NULL);
7246         if (err)
7247                 return err;
7248
7249         /* only one attribute may be given */
7250         for (i = 0; i <= NL80211_BSS_SELECT_ATTR_MAX; i++) {
7251                 if (attr[i]) {
7252                         if (found)
7253                                 return -EINVAL;
7254                         found = true;
7255                 }
7256         }
7257
7258         bss_select->behaviour = __NL80211_BSS_SELECT_ATTR_INVALID;
7259
7260         if (attr[NL80211_BSS_SELECT_ATTR_RSSI])
7261                 bss_select->behaviour = NL80211_BSS_SELECT_ATTR_RSSI;
7262
7263         if (attr[NL80211_BSS_SELECT_ATTR_BAND_PREF]) {
7264                 bss_select->behaviour = NL80211_BSS_SELECT_ATTR_BAND_PREF;
7265                 bss_select->param.band_pref =
7266                         nla_get_u32(attr[NL80211_BSS_SELECT_ATTR_BAND_PREF]);
7267                 if (!is_band_valid(wiphy, bss_select->param.band_pref))
7268                         return -EINVAL;
7269         }
7270
7271         if (attr[NL80211_BSS_SELECT_ATTR_RSSI_ADJUST]) {
7272                 struct nl80211_bss_select_rssi_adjust *adj_param;
7273
7274                 adj_param = nla_data(attr[NL80211_BSS_SELECT_ATTR_RSSI_ADJUST]);
7275                 bss_select->behaviour = NL80211_BSS_SELECT_ATTR_RSSI_ADJUST;
7276                 bss_select->param.adjust.band = adj_param->band;
7277                 bss_select->param.adjust.delta = adj_param->delta;
7278                 if (!is_band_valid(wiphy, bss_select->param.adjust.band))
7279                         return -EINVAL;
7280         }
7281
7282         /* user-space did not provide behaviour attribute */
7283         if (bss_select->behaviour == __NL80211_BSS_SELECT_ATTR_INVALID)
7284                 return -EINVAL;
7285
7286         if (!(wiphy->bss_select_support & BIT(bss_select->behaviour)))
7287                 return -EINVAL;
7288
7289         return 0;
7290 }
7291
7292 int nl80211_parse_random_mac(struct nlattr **attrs,
7293                              u8 *mac_addr, u8 *mac_addr_mask)
7294 {
7295         int i;
7296
7297         if (!attrs[NL80211_ATTR_MAC] && !attrs[NL80211_ATTR_MAC_MASK]) {
7298                 eth_zero_addr(mac_addr);
7299                 eth_zero_addr(mac_addr_mask);
7300                 mac_addr[0] = 0x2;
7301                 mac_addr_mask[0] = 0x3;
7302
7303                 return 0;
7304         }
7305
7306         /* need both or none */
7307         if (!attrs[NL80211_ATTR_MAC] || !attrs[NL80211_ATTR_MAC_MASK])
7308                 return -EINVAL;
7309
7310         memcpy(mac_addr, nla_data(attrs[NL80211_ATTR_MAC]), ETH_ALEN);
7311         memcpy(mac_addr_mask, nla_data(attrs[NL80211_ATTR_MAC_MASK]), ETH_ALEN);
7312
7313         /* don't allow or configure an mcast address */
7314         if (!is_multicast_ether_addr(mac_addr_mask) ||
7315             is_multicast_ether_addr(mac_addr))
7316                 return -EINVAL;
7317
7318         /*
7319          * allow users to pass a MAC address that has bits set outside
7320          * of the mask, but don't bother drivers with having to deal
7321          * with such bits
7322          */
7323         for (i = 0; i < ETH_ALEN; i++)
7324                 mac_addr[i] &= mac_addr_mask[i];
7325
7326         return 0;
7327 }
7328
7329 static bool cfg80211_off_channel_oper_allowed(struct wireless_dev *wdev)
7330 {
7331         ASSERT_WDEV_LOCK(wdev);
7332
7333         if (!cfg80211_beaconing_iface_active(wdev))
7334                 return true;
7335
7336         if (!(wdev->chandef.chan->flags & IEEE80211_CHAN_RADAR))
7337                 return true;
7338
7339         return regulatory_pre_cac_allowed(wdev->wiphy);
7340 }
7341
7342 static bool nl80211_check_scan_feat(struct wiphy *wiphy, u32 flags, u32 flag,
7343                                     enum nl80211_ext_feature_index feat)
7344 {
7345         if (!(flags & flag))
7346                 return true;
7347         if (wiphy_ext_feature_isset(wiphy, feat))
7348                 return true;
7349         return false;
7350 }
7351
7352 static int
7353 nl80211_check_scan_flags(struct wiphy *wiphy, struct wireless_dev *wdev,
7354                          void *request, struct nlattr **attrs,
7355                          bool is_sched_scan)
7356 {
7357         u8 *mac_addr, *mac_addr_mask;
7358         u32 *flags;
7359         enum nl80211_feature_flags randomness_flag;
7360
7361         if (!attrs[NL80211_ATTR_SCAN_FLAGS])
7362                 return 0;
7363
7364         if (is_sched_scan) {
7365                 struct cfg80211_sched_scan_request *req = request;
7366
7367                 randomness_flag = wdev ?
7368                                   NL80211_FEATURE_SCHED_SCAN_RANDOM_MAC_ADDR :
7369                                   NL80211_FEATURE_ND_RANDOM_MAC_ADDR;
7370                 flags = &req->flags;
7371                 mac_addr = req->mac_addr;
7372                 mac_addr_mask = req->mac_addr_mask;
7373         } else {
7374                 struct cfg80211_scan_request *req = request;
7375
7376                 randomness_flag = NL80211_FEATURE_SCAN_RANDOM_MAC_ADDR;
7377                 flags = &req->flags;
7378                 mac_addr = req->mac_addr;
7379                 mac_addr_mask = req->mac_addr_mask;
7380         }
7381
7382         *flags = nla_get_u32(attrs[NL80211_ATTR_SCAN_FLAGS]);
7383
7384         if (((*flags & NL80211_SCAN_FLAG_LOW_PRIORITY) &&
7385              !(wiphy->features & NL80211_FEATURE_LOW_PRIORITY_SCAN)) ||
7386             !nl80211_check_scan_feat(wiphy, *flags,
7387                                      NL80211_SCAN_FLAG_LOW_SPAN,
7388                                      NL80211_EXT_FEATURE_LOW_SPAN_SCAN) ||
7389             !nl80211_check_scan_feat(wiphy, *flags,
7390                                      NL80211_SCAN_FLAG_LOW_POWER,
7391                                      NL80211_EXT_FEATURE_LOW_POWER_SCAN) ||
7392             !nl80211_check_scan_feat(wiphy, *flags,
7393                                      NL80211_SCAN_FLAG_HIGH_ACCURACY,
7394                                      NL80211_EXT_FEATURE_HIGH_ACCURACY_SCAN) ||
7395             !nl80211_check_scan_feat(wiphy, *flags,
7396                                      NL80211_SCAN_FLAG_FILS_MAX_CHANNEL_TIME,
7397                                      NL80211_EXT_FEATURE_FILS_MAX_CHANNEL_TIME) ||
7398             !nl80211_check_scan_feat(wiphy, *flags,
7399                                      NL80211_SCAN_FLAG_ACCEPT_BCAST_PROBE_RESP,
7400                                      NL80211_EXT_FEATURE_ACCEPT_BCAST_PROBE_RESP) ||
7401             !nl80211_check_scan_feat(wiphy, *flags,
7402                                      NL80211_SCAN_FLAG_OCE_PROBE_REQ_DEFERRAL_SUPPRESSION,
7403                                      NL80211_EXT_FEATURE_OCE_PROBE_REQ_DEFERRAL_SUPPRESSION) ||
7404             !nl80211_check_scan_feat(wiphy, *flags,
7405                                      NL80211_SCAN_FLAG_OCE_PROBE_REQ_HIGH_TX_RATE,
7406                                      NL80211_EXT_FEATURE_OCE_PROBE_REQ_HIGH_TX_RATE) ||
7407             !nl80211_check_scan_feat(wiphy, *flags,
7408                                      NL80211_SCAN_FLAG_RANDOM_SN,
7409                                      NL80211_EXT_FEATURE_SCAN_RANDOM_SN) ||
7410             !nl80211_check_scan_feat(wiphy, *flags,
7411                                      NL80211_SCAN_FLAG_MIN_PREQ_CONTENT,
7412                                      NL80211_EXT_FEATURE_SCAN_MIN_PREQ_CONTENT))
7413                 return -EOPNOTSUPP;
7414
7415         if (*flags & NL80211_SCAN_FLAG_RANDOM_ADDR) {
7416                 int err;
7417
7418                 if (!(wiphy->features & randomness_flag) ||
7419                     (wdev && wdev->current_bss))
7420                         return -EOPNOTSUPP;
7421
7422                 err = nl80211_parse_random_mac(attrs, mac_addr, mac_addr_mask);
7423                 if (err)
7424                         return err;
7425         }
7426
7427         return 0;
7428 }
7429
7430 static int nl80211_trigger_scan(struct sk_buff *skb, struct genl_info *info)
7431 {
7432         struct cfg80211_registered_device *rdev = info->user_ptr[0];
7433         struct wireless_dev *wdev = info->user_ptr[1];
7434         struct cfg80211_scan_request *request;
7435         struct nlattr *attr;
7436         struct wiphy *wiphy;
7437         int err, tmp, n_ssids = 0, n_channels, i;
7438         size_t ie_len;
7439
7440         wiphy = &rdev->wiphy;
7441
7442         if (wdev->iftype == NL80211_IFTYPE_NAN)
7443                 return -EOPNOTSUPP;
7444
7445         if (!rdev->ops->scan)
7446                 return -EOPNOTSUPP;
7447
7448         if (rdev->scan_req || rdev->scan_msg) {
7449                 err = -EBUSY;
7450                 goto unlock;
7451         }
7452
7453         if (info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]) {
7454                 n_channels = validate_scan_freqs(
7455                                 info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]);
7456                 if (!n_channels) {
7457                         err = -EINVAL;
7458                         goto unlock;
7459                 }
7460         } else {
7461                 n_channels = ieee80211_get_num_supported_channels(wiphy);
7462         }
7463
7464         if (info->attrs[NL80211_ATTR_SCAN_SSIDS])
7465                 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_SSIDS], tmp)
7466                         n_ssids++;
7467
7468         if (n_ssids > wiphy->max_scan_ssids) {
7469                 err = -EINVAL;
7470                 goto unlock;
7471         }
7472
7473         if (info->attrs[NL80211_ATTR_IE])
7474                 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
7475         else
7476                 ie_len = 0;
7477
7478         if (ie_len > wiphy->max_scan_ie_len) {
7479                 err = -EINVAL;
7480                 goto unlock;
7481         }
7482
7483         request = kzalloc(sizeof(*request)
7484                         + sizeof(*request->ssids) * n_ssids
7485                         + sizeof(*request->channels) * n_channels
7486                         + ie_len, GFP_KERNEL);
7487         if (!request) {
7488                 err = -ENOMEM;
7489                 goto unlock;
7490         }
7491
7492         if (n_ssids)
7493                 request->ssids = (void *)&request->channels[n_channels];
7494         request->n_ssids = n_ssids;
7495         if (ie_len) {
7496                 if (n_ssids)
7497                         request->ie = (void *)(request->ssids + n_ssids);
7498                 else
7499                         request->ie = (void *)(request->channels + n_channels);
7500         }
7501
7502         i = 0;
7503         if (info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]) {
7504                 /* user specified, bail out if channel not found */
7505                 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_FREQUENCIES], tmp) {
7506                         struct ieee80211_channel *chan;
7507
7508                         chan = ieee80211_get_channel(wiphy, nla_get_u32(attr));
7509
7510                         if (!chan) {
7511                                 err = -EINVAL;
7512                                 goto out_free;
7513                         }
7514
7515                         /* ignore disabled channels */
7516                         if (chan->flags & IEEE80211_CHAN_DISABLED)
7517                                 continue;
7518
7519                         request->channels[i] = chan;
7520                         i++;
7521                 }
7522         } else {
7523                 enum nl80211_band band;
7524
7525                 /* all channels */
7526                 for (band = 0; band < NUM_NL80211_BANDS; band++) {
7527                         int j;
7528
7529                         if (!wiphy->bands[band])
7530                                 continue;
7531                         for (j = 0; j < wiphy->bands[band]->n_channels; j++) {
7532                                 struct ieee80211_channel *chan;
7533
7534                                 chan = &wiphy->bands[band]->channels[j];
7535
7536                                 if (chan->flags & IEEE80211_CHAN_DISABLED)
7537                                         continue;
7538
7539                                 request->channels[i] = chan;
7540                                 i++;
7541                         }
7542                 }
7543         }
7544
7545         if (!i) {
7546                 err = -EINVAL;
7547                 goto out_free;
7548         }
7549
7550         request->n_channels = i;
7551
7552         wdev_lock(wdev);
7553         if (!cfg80211_off_channel_oper_allowed(wdev)) {
7554                 struct ieee80211_channel *chan;
7555
7556                 if (request->n_channels != 1) {
7557                         wdev_unlock(wdev);
7558                         err = -EBUSY;
7559                         goto out_free;
7560                 }
7561
7562                 chan = request->channels[0];
7563                 if (chan->center_freq != wdev->chandef.chan->center_freq) {
7564                         wdev_unlock(wdev);
7565                         err = -EBUSY;
7566                         goto out_free;
7567                 }
7568         }
7569         wdev_unlock(wdev);
7570
7571         i = 0;
7572         if (n_ssids) {
7573                 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_SSIDS], tmp) {
7574                         if (nla_len(attr) > IEEE80211_MAX_SSID_LEN) {
7575                                 err = -EINVAL;
7576                                 goto out_free;
7577                         }
7578                         request->ssids[i].ssid_len = nla_len(attr);
7579                         memcpy(request->ssids[i].ssid, nla_data(attr), nla_len(attr));
7580                         i++;
7581                 }
7582         }
7583
7584         if (info->attrs[NL80211_ATTR_IE]) {
7585                 request->ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
7586                 memcpy((void *)request->ie,
7587                        nla_data(info->attrs[NL80211_ATTR_IE]),
7588                        request->ie_len);
7589         }
7590
7591         for (i = 0; i < NUM_NL80211_BANDS; i++)
7592                 if (wiphy->bands[i])
7593                         request->rates[i] =
7594                                 (1 << wiphy->bands[i]->n_bitrates) - 1;
7595
7596         if (info->attrs[NL80211_ATTR_SCAN_SUPP_RATES]) {
7597                 nla_for_each_nested(attr,
7598                                     info->attrs[NL80211_ATTR_SCAN_SUPP_RATES],
7599                                     tmp) {
7600                         enum nl80211_band band = nla_type(attr);
7601
7602                         if (band < 0 || band >= NUM_NL80211_BANDS) {
7603                                 err = -EINVAL;
7604                                 goto out_free;
7605                         }
7606
7607                         if (!wiphy->bands[band])
7608                                 continue;
7609
7610                         err = ieee80211_get_ratemask(wiphy->bands[band],
7611                                                      nla_data(attr),
7612                                                      nla_len(attr),
7613                                                      &request->rates[band]);
7614                         if (err)
7615                                 goto out_free;
7616                 }
7617         }
7618
7619         if (info->attrs[NL80211_ATTR_MEASUREMENT_DURATION]) {
7620                 if (!wiphy_ext_feature_isset(wiphy,
7621                                         NL80211_EXT_FEATURE_SET_SCAN_DWELL)) {
7622                         err = -EOPNOTSUPP;
7623                         goto out_free;
7624                 }
7625
7626                 request->duration =
7627                         nla_get_u16(info->attrs[NL80211_ATTR_MEASUREMENT_DURATION]);
7628                 request->duration_mandatory =
7629                         nla_get_flag(info->attrs[NL80211_ATTR_MEASUREMENT_DURATION_MANDATORY]);
7630         }
7631
7632         err = nl80211_check_scan_flags(wiphy, wdev, request, info->attrs,
7633                                        false);
7634         if (err)
7635                 goto out_free;
7636
7637         request->no_cck =
7638                 nla_get_flag(info->attrs[NL80211_ATTR_TX_NO_CCK_RATE]);
7639
7640         /* Initial implementation used NL80211_ATTR_MAC to set the specific
7641          * BSSID to scan for. This was problematic because that same attribute
7642          * was already used for another purpose (local random MAC address). The
7643          * NL80211_ATTR_BSSID attribute was added to fix this. For backwards
7644          * compatibility with older userspace components, also use the
7645          * NL80211_ATTR_MAC value here if it can be determined to be used for
7646          * the specific BSSID use case instead of the random MAC address
7647          * (NL80211_ATTR_SCAN_FLAGS is used to enable random MAC address use).
7648          */
7649         if (info->attrs[NL80211_ATTR_BSSID])
7650                 memcpy(request->bssid,
7651                        nla_data(info->attrs[NL80211_ATTR_BSSID]), ETH_ALEN);
7652         else if (!(request->flags & NL80211_SCAN_FLAG_RANDOM_ADDR) &&
7653                  info->attrs[NL80211_ATTR_MAC])
7654                 memcpy(request->bssid, nla_data(info->attrs[NL80211_ATTR_MAC]),
7655                        ETH_ALEN);
7656         else
7657                 eth_broadcast_addr(request->bssid);
7658
7659         request->wdev = wdev;
7660         request->wiphy = &rdev->wiphy;
7661         request->scan_start = jiffies;
7662
7663         rdev->scan_req = request;
7664         err = rdev_scan(rdev, request);
7665
7666         if (!err) {
7667                 nl80211_send_scan_start(rdev, wdev);
7668                 if (wdev->netdev)
7669                         dev_hold(wdev->netdev);
7670         } else {
7671  out_free:
7672                 rdev->scan_req = NULL;
7673                 kfree(request);
7674         }
7675
7676  unlock:
7677         return err;
7678 }
7679
7680 static int nl80211_abort_scan(struct sk_buff *skb, struct genl_info *info)
7681 {
7682         struct cfg80211_registered_device *rdev = info->user_ptr[0];
7683         struct wireless_dev *wdev = info->user_ptr[1];
7684
7685         if (!rdev->ops->abort_scan)
7686                 return -EOPNOTSUPP;
7687
7688         if (rdev->scan_msg)
7689                 return 0;
7690
7691         if (!rdev->scan_req)
7692                 return -ENOENT;
7693
7694         rdev_abort_scan(rdev, wdev);
7695         return 0;
7696 }
7697
7698 static int
7699 nl80211_parse_sched_scan_plans(struct wiphy *wiphy, int n_plans,
7700                                struct cfg80211_sched_scan_request *request,
7701                                struct nlattr **attrs)
7702 {
7703         int tmp, err, i = 0;
7704         struct nlattr *attr;
7705
7706         if (!attrs[NL80211_ATTR_SCHED_SCAN_PLANS]) {
7707                 u32 interval;
7708
7709                 /*
7710                  * If scan plans are not specified,
7711                  * %NL80211_ATTR_SCHED_SCAN_INTERVAL will be specified. In this
7712                  * case one scan plan will be set with the specified scan
7713                  * interval and infinite number of iterations.
7714                  */
7715                 interval = nla_get_u32(attrs[NL80211_ATTR_SCHED_SCAN_INTERVAL]);
7716                 if (!interval)
7717                         return -EINVAL;
7718
7719                 request->scan_plans[0].interval =
7720                         DIV_ROUND_UP(interval, MSEC_PER_SEC);
7721                 if (!request->scan_plans[0].interval)
7722                         return -EINVAL;
7723
7724                 if (request->scan_plans[0].interval >
7725                     wiphy->max_sched_scan_plan_interval)
7726                         request->scan_plans[0].interval =
7727                                 wiphy->max_sched_scan_plan_interval;
7728
7729                 return 0;
7730         }
7731
7732         nla_for_each_nested(attr, attrs[NL80211_ATTR_SCHED_SCAN_PLANS], tmp) {
7733                 struct nlattr *plan[NL80211_SCHED_SCAN_PLAN_MAX + 1];
7734
7735                 if (WARN_ON(i >= n_plans))
7736                         return -EINVAL;
7737
7738                 err = nla_parse_nested_deprecated(plan,
7739                                                   NL80211_SCHED_SCAN_PLAN_MAX,
7740                                                   attr, nl80211_plan_policy,
7741                                                   NULL);
7742                 if (err)
7743                         return err;
7744
7745                 if (!plan[NL80211_SCHED_SCAN_PLAN_INTERVAL])
7746                         return -EINVAL;
7747
7748                 request->scan_plans[i].interval =
7749                         nla_get_u32(plan[NL80211_SCHED_SCAN_PLAN_INTERVAL]);
7750                 if (!request->scan_plans[i].interval ||
7751                     request->scan_plans[i].interval >
7752                     wiphy->max_sched_scan_plan_interval)
7753                         return -EINVAL;
7754
7755                 if (plan[NL80211_SCHED_SCAN_PLAN_ITERATIONS]) {
7756                         request->scan_plans[i].iterations =
7757                                 nla_get_u32(plan[NL80211_SCHED_SCAN_PLAN_ITERATIONS]);
7758                         if (!request->scan_plans[i].iterations ||
7759                             (request->scan_plans[i].iterations >
7760                              wiphy->max_sched_scan_plan_iterations))
7761                                 return -EINVAL;
7762                 } else if (i < n_plans - 1) {
7763                         /*
7764                          * All scan plans but the last one must specify
7765                          * a finite number of iterations
7766                          */
7767                         return -EINVAL;
7768                 }
7769
7770                 i++;
7771         }
7772
7773         /*
7774          * The last scan plan must not specify the number of
7775          * iterations, it is supposed to run infinitely
7776          */
7777         if (request->scan_plans[n_plans - 1].iterations)
7778                 return  -EINVAL;
7779
7780         return 0;
7781 }
7782
7783 static int
7784 nl80211_parse_sched_scan_per_band_rssi(struct wiphy *wiphy,
7785                                        struct cfg80211_match_set *match_sets,
7786                                        struct nlattr *tb_band_rssi,
7787                                        s32 rssi_thold)
7788 {
7789         struct nlattr *attr;
7790         int i, tmp, ret = 0;
7791
7792         if (!wiphy_ext_feature_isset(wiphy,
7793                     NL80211_EXT_FEATURE_SCHED_SCAN_BAND_SPECIFIC_RSSI_THOLD)) {
7794                 if (tb_band_rssi)
7795                         ret = -EOPNOTSUPP;
7796                 else
7797                         for (i = 0; i < NUM_NL80211_BANDS; i++)
7798                                 match_sets->per_band_rssi_thold[i] =
7799                                         NL80211_SCAN_RSSI_THOLD_OFF;
7800                 return ret;
7801         }
7802
7803         for (i = 0; i < NUM_NL80211_BANDS; i++)
7804                 match_sets->per_band_rssi_thold[i] = rssi_thold;
7805
7806         nla_for_each_nested(attr, tb_band_rssi, tmp) {
7807                 enum nl80211_band band = nla_type(attr);
7808
7809                 if (band < 0 || band >= NUM_NL80211_BANDS)
7810                         return -EINVAL;
7811
7812                 match_sets->per_band_rssi_thold[band] = nla_get_s32(attr);
7813         }
7814
7815         return 0;
7816 }
7817
7818 static struct cfg80211_sched_scan_request *
7819 nl80211_parse_sched_scan(struct wiphy *wiphy, struct wireless_dev *wdev,
7820                          struct nlattr **attrs, int max_match_sets)
7821 {
7822         struct cfg80211_sched_scan_request *request;
7823         struct nlattr *attr;
7824         int err, tmp, n_ssids = 0, n_match_sets = 0, n_channels, i, n_plans = 0;
7825         enum nl80211_band band;
7826         size_t ie_len;
7827         struct nlattr *tb[NL80211_SCHED_SCAN_MATCH_ATTR_MAX + 1];
7828         s32 default_match_rssi = NL80211_SCAN_RSSI_THOLD_OFF;
7829
7830         if (attrs[NL80211_ATTR_SCAN_FREQUENCIES]) {
7831                 n_channels = validate_scan_freqs(
7832                                 attrs[NL80211_ATTR_SCAN_FREQUENCIES]);
7833                 if (!n_channels)
7834                         return ERR_PTR(-EINVAL);
7835         } else {
7836                 n_channels = ieee80211_get_num_supported_channels(wiphy);
7837         }
7838
7839         if (attrs[NL80211_ATTR_SCAN_SSIDS])
7840                 nla_for_each_nested(attr, attrs[NL80211_ATTR_SCAN_SSIDS],
7841                                     tmp)
7842                         n_ssids++;
7843
7844         if (n_ssids > wiphy->max_sched_scan_ssids)
7845                 return ERR_PTR(-EINVAL);
7846
7847         /*
7848          * First, count the number of 'real' matchsets. Due to an issue with
7849          * the old implementation, matchsets containing only the RSSI attribute
7850          * (NL80211_SCHED_SCAN_MATCH_ATTR_RSSI) are considered as the 'default'
7851          * RSSI for all matchsets, rather than their own matchset for reporting
7852          * all APs with a strong RSSI. This is needed to be compatible with
7853          * older userspace that treated a matchset with only the RSSI as the
7854          * global RSSI for all other matchsets - if there are other matchsets.
7855          */
7856         if (attrs[NL80211_ATTR_SCHED_SCAN_MATCH]) {
7857                 nla_for_each_nested(attr,
7858                                     attrs[NL80211_ATTR_SCHED_SCAN_MATCH],
7859                                     tmp) {
7860                         struct nlattr *rssi;
7861
7862                         err = nla_parse_nested_deprecated(tb,
7863                                                           NL80211_SCHED_SCAN_MATCH_ATTR_MAX,
7864                                                           attr,
7865                                                           nl80211_match_policy,
7866                                                           NULL);
7867                         if (err)
7868                                 return ERR_PTR(err);
7869
7870                         /* SSID and BSSID are mutually exclusive */
7871                         if (tb[NL80211_SCHED_SCAN_MATCH_ATTR_SSID] &&
7872                             tb[NL80211_SCHED_SCAN_MATCH_ATTR_BSSID])
7873                                 return ERR_PTR(-EINVAL);
7874
7875                         /* add other standalone attributes here */
7876                         if (tb[NL80211_SCHED_SCAN_MATCH_ATTR_SSID] ||
7877                             tb[NL80211_SCHED_SCAN_MATCH_ATTR_BSSID]) {
7878                                 n_match_sets++;
7879                                 continue;
7880                         }
7881                         rssi = tb[NL80211_SCHED_SCAN_MATCH_ATTR_RSSI];
7882                         if (rssi)
7883                                 default_match_rssi = nla_get_s32(rssi);
7884                 }
7885         }
7886
7887         /* However, if there's no other matchset, add the RSSI one */
7888         if (!n_match_sets && default_match_rssi != NL80211_SCAN_RSSI_THOLD_OFF)
7889                 n_match_sets = 1;
7890
7891         if (n_match_sets > max_match_sets)
7892                 return ERR_PTR(-EINVAL);
7893
7894         if (attrs[NL80211_ATTR_IE])
7895                 ie_len = nla_len(attrs[NL80211_ATTR_IE]);
7896         else
7897                 ie_len = 0;
7898
7899         if (ie_len > wiphy->max_sched_scan_ie_len)
7900                 return ERR_PTR(-EINVAL);
7901
7902         if (attrs[NL80211_ATTR_SCHED_SCAN_PLANS]) {
7903                 /*
7904                  * NL80211_ATTR_SCHED_SCAN_INTERVAL must not be specified since
7905                  * each scan plan already specifies its own interval
7906                  */
7907                 if (attrs[NL80211_ATTR_SCHED_SCAN_INTERVAL])
7908                         return ERR_PTR(-EINVAL);
7909
7910                 nla_for_each_nested(attr,
7911                                     attrs[NL80211_ATTR_SCHED_SCAN_PLANS], tmp)
7912                         n_plans++;
7913         } else {
7914                 /*
7915                  * The scan interval attribute is kept for backward
7916                  * compatibility. If no scan plans are specified and sched scan
7917                  * interval is specified, one scan plan will be set with this
7918                  * scan interval and infinite number of iterations.
7919                  */
7920                 if (!attrs[NL80211_ATTR_SCHED_SCAN_INTERVAL])
7921                         return ERR_PTR(-EINVAL);
7922
7923                 n_plans = 1;
7924         }
7925
7926         if (!n_plans || n_plans > wiphy->max_sched_scan_plans)
7927                 return ERR_PTR(-EINVAL);
7928
7929         if (!wiphy_ext_feature_isset(
7930                     wiphy, NL80211_EXT_FEATURE_SCHED_SCAN_RELATIVE_RSSI) &&
7931             (attrs[NL80211_ATTR_SCHED_SCAN_RELATIVE_RSSI] ||
7932              attrs[NL80211_ATTR_SCHED_SCAN_RSSI_ADJUST]))
7933                 return ERR_PTR(-EINVAL);
7934
7935         request = kzalloc(sizeof(*request)
7936                         + sizeof(*request->ssids) * n_ssids
7937                         + sizeof(*request->match_sets) * n_match_sets
7938                         + sizeof(*request->scan_plans) * n_plans
7939                         + sizeof(*request->channels) * n_channels
7940                         + ie_len, GFP_KERNEL);
7941         if (!request)
7942                 return ERR_PTR(-ENOMEM);
7943
7944         if (n_ssids)
7945                 request->ssids = (void *)&request->channels[n_channels];
7946         request->n_ssids = n_ssids;
7947         if (ie_len) {
7948                 if (n_ssids)
7949                         request->ie = (void *)(request->ssids + n_ssids);
7950                 else
7951                         request->ie = (void *)(request->channels + n_channels);
7952         }
7953
7954         if (n_match_sets) {
7955                 if (request->ie)
7956                         request->match_sets = (void *)(request->ie + ie_len);
7957                 else if (n_ssids)
7958                         request->match_sets =
7959                                 (void *)(request->ssids + n_ssids);
7960                 else
7961                         request->match_sets =
7962                                 (void *)(request->channels + n_channels);
7963         }
7964         request->n_match_sets = n_match_sets;
7965
7966         if (n_match_sets)
7967                 request->scan_plans = (void *)(request->match_sets +
7968                                                n_match_sets);
7969         else if (request->ie)
7970                 request->scan_plans = (void *)(request->ie + ie_len);
7971         else if (n_ssids)
7972                 request->scan_plans = (void *)(request->ssids + n_ssids);
7973         else
7974                 request->scan_plans = (void *)(request->channels + n_channels);
7975
7976         request->n_scan_plans = n_plans;
7977
7978         i = 0;
7979         if (attrs[NL80211_ATTR_SCAN_FREQUENCIES]) {
7980                 /* user specified, bail out if channel not found */
7981                 nla_for_each_nested(attr,
7982                                     attrs[NL80211_ATTR_SCAN_FREQUENCIES],
7983                                     tmp) {
7984                         struct ieee80211_channel *chan;
7985
7986                         chan = ieee80211_get_channel(wiphy, nla_get_u32(attr));
7987
7988                         if (!chan) {
7989                                 err = -EINVAL;
7990                                 goto out_free;
7991                         }
7992
7993                         /* ignore disabled channels */
7994                         if (chan->flags & IEEE80211_CHAN_DISABLED)
7995                                 continue;
7996
7997                         request->channels[i] = chan;
7998                         i++;
7999                 }
8000         } else {
8001                 /* all channels */
8002                 for (band = 0; band < NUM_NL80211_BANDS; band++) {
8003                         int j;
8004
8005                         if (!wiphy->bands[band])
8006                                 continue;
8007                         for (j = 0; j < wiphy->bands[band]->n_channels; j++) {
8008                                 struct ieee80211_channel *chan;
8009
8010                                 chan = &wiphy->bands[band]->channels[j];
8011
8012                                 if (chan->flags & IEEE80211_CHAN_DISABLED)
8013                                         continue;
8014
8015                                 request->channels[i] = chan;
8016                                 i++;
8017                         }
8018                 }
8019         }
8020
8021         if (!i) {
8022                 err = -EINVAL;
8023                 goto out_free;
8024         }
8025
8026         request->n_channels = i;
8027
8028         i = 0;
8029         if (n_ssids) {
8030                 nla_for_each_nested(attr, attrs[NL80211_ATTR_SCAN_SSIDS],
8031                                     tmp) {
8032                         if (nla_len(attr) > IEEE80211_MAX_SSID_LEN) {
8033                                 err = -EINVAL;
8034                                 goto out_free;
8035                         }
8036                         request->ssids[i].ssid_len = nla_len(attr);
8037                         memcpy(request->ssids[i].ssid, nla_data(attr),
8038                                nla_len(attr));
8039                         i++;
8040                 }
8041         }
8042
8043         i = 0;
8044         if (attrs[NL80211_ATTR_SCHED_SCAN_MATCH]) {
8045                 nla_for_each_nested(attr,
8046                                     attrs[NL80211_ATTR_SCHED_SCAN_MATCH],
8047                                     tmp) {
8048                         struct nlattr *ssid, *bssid, *rssi;
8049
8050                         err = nla_parse_nested_deprecated(tb,
8051                                                           NL80211_SCHED_SCAN_MATCH_ATTR_MAX,
8052                                                           attr,
8053                                                           nl80211_match_policy,
8054                                                           NULL);
8055                         if (err)
8056                                 goto out_free;
8057                         ssid = tb[NL80211_SCHED_SCAN_MATCH_ATTR_SSID];
8058                         bssid = tb[NL80211_SCHED_SCAN_MATCH_ATTR_BSSID];
8059
8060                         if (!ssid && !bssid) {
8061                                 i++;
8062                                 continue;
8063                         }
8064
8065                         if (WARN_ON(i >= n_match_sets)) {
8066                                 /* this indicates a programming error,
8067                                  * the loop above should have verified
8068                                  * things properly
8069                                  */
8070                                 err = -EINVAL;
8071                                 goto out_free;
8072                         }
8073
8074                         if (ssid) {
8075                                 if (nla_len(ssid) > IEEE80211_MAX_SSID_LEN) {
8076                                         err = -EINVAL;
8077                                         goto out_free;
8078                                 }
8079                                 memcpy(request->match_sets[i].ssid.ssid,
8080                                        nla_data(ssid), nla_len(ssid));
8081                                 request->match_sets[i].ssid.ssid_len =
8082                                         nla_len(ssid);
8083                         }
8084                         if (bssid) {
8085                                 if (nla_len(bssid) != ETH_ALEN) {
8086                                         err = -EINVAL;
8087                                         goto out_free;
8088                                 }
8089                                 memcpy(request->match_sets[i].bssid,
8090                                        nla_data(bssid), ETH_ALEN);
8091                         }
8092
8093                         /* special attribute - old implementation w/a */
8094                         request->match_sets[i].rssi_thold = default_match_rssi;
8095                         rssi = tb[NL80211_SCHED_SCAN_MATCH_ATTR_RSSI];
8096                         if (rssi)
8097                                 request->match_sets[i].rssi_thold =
8098                                         nla_get_s32(rssi);
8099
8100                         /* Parse per band RSSI attribute */
8101                         err = nl80211_parse_sched_scan_per_band_rssi(wiphy,
8102                                 &request->match_sets[i],
8103                                 tb[NL80211_SCHED_SCAN_MATCH_PER_BAND_RSSI],
8104                                 request->match_sets[i].rssi_thold);
8105                         if (err)
8106                                 goto out_free;
8107
8108                         i++;
8109                 }
8110
8111                 /* there was no other matchset, so the RSSI one is alone */
8112                 if (i == 0 && n_match_sets)
8113                         request->match_sets[0].rssi_thold = default_match_rssi;
8114
8115                 request->min_rssi_thold = INT_MAX;
8116                 for (i = 0; i < n_match_sets; i++)
8117                         request->min_rssi_thold =
8118                                 min(request->match_sets[i].rssi_thold,
8119                                     request->min_rssi_thold);
8120         } else {
8121                 request->min_rssi_thold = NL80211_SCAN_RSSI_THOLD_OFF;
8122         }
8123
8124         if (ie_len) {
8125                 request->ie_len = ie_len;
8126                 memcpy((void *)request->ie,
8127                        nla_data(attrs[NL80211_ATTR_IE]),
8128                        request->ie_len);
8129         }
8130
8131         err = nl80211_check_scan_flags(wiphy, wdev, request, attrs, true);
8132         if (err)
8133                 goto out_free;
8134
8135         if (attrs[NL80211_ATTR_SCHED_SCAN_DELAY])
8136                 request->delay =
8137                         nla_get_u32(attrs[NL80211_ATTR_SCHED_SCAN_DELAY]);
8138
8139         if (attrs[NL80211_ATTR_SCHED_SCAN_RELATIVE_RSSI]) {
8140                 request->relative_rssi = nla_get_s8(
8141                         attrs[NL80211_ATTR_SCHED_SCAN_RELATIVE_RSSI]);
8142                 request->relative_rssi_set = true;
8143         }
8144
8145         if (request->relative_rssi_set &&
8146             attrs[NL80211_ATTR_SCHED_SCAN_RSSI_ADJUST]) {
8147                 struct nl80211_bss_select_rssi_adjust *rssi_adjust;
8148
8149                 rssi_adjust = nla_data(
8150                         attrs[NL80211_ATTR_SCHED_SCAN_RSSI_ADJUST]);
8151                 request->rssi_adjust.band = rssi_adjust->band;
8152                 request->rssi_adjust.delta = rssi_adjust->delta;
8153                 if (!is_band_valid(wiphy, request->rssi_adjust.band)) {
8154                         err = -EINVAL;
8155                         goto out_free;
8156                 }
8157         }
8158
8159         err = nl80211_parse_sched_scan_plans(wiphy, n_plans, request, attrs);
8160         if (err)
8161                 goto out_free;
8162
8163         request->scan_start = jiffies;
8164
8165         return request;
8166
8167 out_free:
8168         kfree(request);
8169         return ERR_PTR(err);
8170 }
8171
8172 static int nl80211_start_sched_scan(struct sk_buff *skb,
8173                                     struct genl_info *info)
8174 {
8175         struct cfg80211_registered_device *rdev = info->user_ptr[0];
8176         struct net_device *dev = info->user_ptr[1];
8177         struct wireless_dev *wdev = dev->ieee80211_ptr;
8178         struct cfg80211_sched_scan_request *sched_scan_req;
8179         bool want_multi;
8180         int err;
8181
8182         if (!rdev->wiphy.max_sched_scan_reqs || !rdev->ops->sched_scan_start)
8183                 return -EOPNOTSUPP;
8184
8185         want_multi = info->attrs[NL80211_ATTR_SCHED_SCAN_MULTI];
8186         err = cfg80211_sched_scan_req_possible(rdev, want_multi);
8187         if (err)
8188                 return err;
8189
8190         sched_scan_req = nl80211_parse_sched_scan(&rdev->wiphy, wdev,
8191                                                   info->attrs,
8192                                                   rdev->wiphy.max_match_sets);
8193
8194         err = PTR_ERR_OR_ZERO(sched_scan_req);
8195         if (err)
8196                 goto out_err;
8197
8198         /* leave request id zero for legacy request
8199          * or if driver does not support multi-scheduled scan
8200          */
8201         if (want_multi && rdev->wiphy.max_sched_scan_reqs > 1) {
8202                 while (!sched_scan_req->reqid)
8203                         sched_scan_req->reqid = cfg80211_assign_cookie(rdev);
8204         }
8205
8206         err = rdev_sched_scan_start(rdev, dev, sched_scan_req);
8207         if (err)
8208                 goto out_free;
8209
8210         sched_scan_req->dev = dev;
8211         sched_scan_req->wiphy = &rdev->wiphy;
8212
8213         if (info->attrs[NL80211_ATTR_SOCKET_OWNER])
8214                 sched_scan_req->owner_nlportid = info->snd_portid;
8215
8216         cfg80211_add_sched_scan_req(rdev, sched_scan_req);
8217
8218         nl80211_send_sched_scan(sched_scan_req, NL80211_CMD_START_SCHED_SCAN);
8219         return 0;
8220
8221 out_free:
8222         kfree(sched_scan_req);
8223 out_err:
8224         return err;
8225 }
8226
8227 static int nl80211_stop_sched_scan(struct sk_buff *skb,
8228                                    struct genl_info *info)
8229 {
8230         struct cfg80211_sched_scan_request *req;
8231         struct cfg80211_registered_device *rdev = info->user_ptr[0];
8232         u64 cookie;
8233
8234         if (!rdev->wiphy.max_sched_scan_reqs || !rdev->ops->sched_scan_stop)
8235                 return -EOPNOTSUPP;
8236
8237         if (info->attrs[NL80211_ATTR_COOKIE]) {
8238                 cookie = nla_get_u64(info->attrs[NL80211_ATTR_COOKIE]);
8239                 return __cfg80211_stop_sched_scan(rdev, cookie, false);
8240         }
8241
8242         req = list_first_or_null_rcu(&rdev->sched_scan_req_list,
8243                                      struct cfg80211_sched_scan_request,
8244                                      list);
8245         if (!req || req->reqid ||
8246             (req->owner_nlportid &&
8247              req->owner_nlportid != info->snd_portid))
8248                 return -ENOENT;
8249
8250         return cfg80211_stop_sched_scan_req(rdev, req, false);
8251 }
8252
8253 static int nl80211_start_radar_detection(struct sk_buff *skb,
8254                                          struct genl_info *info)
8255 {
8256         struct cfg80211_registered_device *rdev = info->user_ptr[0];
8257         struct net_device *dev = info->user_ptr[1];
8258         struct wireless_dev *wdev = dev->ieee80211_ptr;
8259         struct wiphy *wiphy = wdev->wiphy;
8260         struct cfg80211_chan_def chandef;
8261         enum nl80211_dfs_regions dfs_region;
8262         unsigned int cac_time_ms;
8263         int err;
8264
8265         dfs_region = reg_get_dfs_region(wiphy);
8266         if (dfs_region == NL80211_DFS_UNSET)
8267                 return -EINVAL;
8268
8269         err = nl80211_parse_chandef(rdev, info, &chandef);
8270         if (err)
8271                 return err;
8272
8273         if (netif_carrier_ok(dev))
8274                 return -EBUSY;
8275
8276         if (wdev->cac_started)
8277                 return -EBUSY;
8278
8279         err = cfg80211_chandef_dfs_required(wiphy, &chandef, wdev->iftype);
8280         if (err < 0)
8281                 return err;
8282
8283         if (err == 0)
8284                 return -EINVAL;
8285
8286         if (!cfg80211_chandef_dfs_usable(wiphy, &chandef))
8287                 return -EINVAL;
8288
8289         /* CAC start is offloaded to HW and can't be started manually */
8290         if (wiphy_ext_feature_isset(wiphy, NL80211_EXT_FEATURE_DFS_OFFLOAD))
8291                 return -EOPNOTSUPP;
8292
8293         if (!rdev->ops->start_radar_detection)
8294                 return -EOPNOTSUPP;
8295
8296         cac_time_ms = cfg80211_chandef_dfs_cac_time(&rdev->wiphy, &chandef);
8297         if (WARN_ON(!cac_time_ms))
8298                 cac_time_ms = IEEE80211_DFS_MIN_CAC_TIME_MS;
8299
8300         err = rdev_start_radar_detection(rdev, dev, &chandef, cac_time_ms);
8301         if (!err) {
8302                 wdev->chandef = chandef;
8303                 wdev->cac_started = true;
8304                 wdev->cac_start_time = jiffies;
8305                 wdev->cac_time_ms = cac_time_ms;
8306         }
8307         return err;
8308 }
8309
8310 static int nl80211_notify_radar_detection(struct sk_buff *skb,
8311                                           struct genl_info *info)
8312 {
8313         struct cfg80211_registered_device *rdev = info->user_ptr[0];
8314         struct net_device *dev = info->user_ptr[1];
8315         struct wireless_dev *wdev = dev->ieee80211_ptr;
8316         struct wiphy *wiphy = wdev->wiphy;
8317         struct cfg80211_chan_def chandef;
8318         enum nl80211_dfs_regions dfs_region;
8319         int err;
8320
8321         dfs_region = reg_get_dfs_region(wiphy);
8322         if (dfs_region == NL80211_DFS_UNSET) {
8323                 GENL_SET_ERR_MSG(info,
8324                                  "DFS Region is not set. Unexpected Radar indication");
8325                 return -EINVAL;
8326         }
8327
8328         err = nl80211_parse_chandef(rdev, info, &chandef);
8329         if (err) {
8330                 GENL_SET_ERR_MSG(info, "Unable to extract chandef info");
8331                 return err;
8332         }
8333
8334         err = cfg80211_chandef_dfs_required(wiphy, &chandef, wdev->iftype);
8335         if (err < 0) {
8336                 GENL_SET_ERR_MSG(info, "chandef is invalid");
8337                 return err;
8338         }
8339
8340         if (err == 0) {
8341                 GENL_SET_ERR_MSG(info,
8342                                  "Unexpected Radar indication for chandef/iftype");
8343                 return -EINVAL;
8344         }
8345
8346         /* Do not process this notification if radar is already detected
8347          * by kernel on this channel, and return success.
8348          */
8349         if (chandef.chan->dfs_state == NL80211_DFS_UNAVAILABLE)
8350                 return 0;
8351
8352         cfg80211_set_dfs_state(wiphy, &chandef, NL80211_DFS_UNAVAILABLE);
8353
8354         cfg80211_sched_dfs_chan_update(rdev);
8355
8356         rdev->radar_chandef = chandef;
8357
8358         /* Propagate this notification to other radios as well */
8359         queue_work(cfg80211_wq, &rdev->propagate_radar_detect_wk);
8360
8361         return 0;
8362 }
8363
8364 static int nl80211_channel_switch(struct sk_buff *skb, struct genl_info *info)
8365 {
8366         struct cfg80211_registered_device *rdev = info->user_ptr[0];
8367         struct net_device *dev = info->user_ptr[1];
8368         struct wireless_dev *wdev = dev->ieee80211_ptr;
8369         struct cfg80211_csa_settings params;
8370         /* csa_attrs is defined static to avoid waste of stack size - this
8371          * function is called under RTNL lock, so this should not be a problem.
8372          */
8373         static struct nlattr *csa_attrs[NL80211_ATTR_MAX+1];
8374         int err;
8375         bool need_new_beacon = false;
8376         bool need_handle_dfs_flag = true;
8377         int len, i;
8378         u32 cs_count;
8379
8380         if (!rdev->ops->channel_switch ||
8381             !(rdev->wiphy.flags & WIPHY_FLAG_HAS_CHANNEL_SWITCH))
8382                 return -EOPNOTSUPP;
8383
8384         switch (dev->ieee80211_ptr->iftype) {
8385         case NL80211_IFTYPE_AP:
8386         case NL80211_IFTYPE_P2P_GO:
8387                 need_new_beacon = true;
8388                 /* For all modes except AP the handle_dfs flag needs to be
8389                  * supplied to tell the kernel that userspace will handle radar
8390                  * events when they happen. Otherwise a switch to a channel
8391                  * requiring DFS will be rejected.
8392                  */
8393                 need_handle_dfs_flag = false;
8394
8395                 /* useless if AP is not running */
8396                 if (!wdev->beacon_interval)
8397                         return -ENOTCONN;
8398                 break;
8399         case NL80211_IFTYPE_ADHOC:
8400                 if (!wdev->ssid_len)
8401                         return -ENOTCONN;
8402                 break;
8403         case NL80211_IFTYPE_MESH_POINT:
8404                 if (!wdev->mesh_id_len)
8405                         return -ENOTCONN;
8406                 break;
8407         default:
8408                 return -EOPNOTSUPP;
8409         }
8410
8411         memset(&params, 0, sizeof(params));
8412         params.beacon_csa.ftm_responder = -1;
8413
8414         if (!info->attrs[NL80211_ATTR_WIPHY_FREQ] ||
8415             !info->attrs[NL80211_ATTR_CH_SWITCH_COUNT])
8416                 return -EINVAL;
8417
8418         /* only important for AP, IBSS and mesh create IEs internally */
8419         if (need_new_beacon && !info->attrs[NL80211_ATTR_CSA_IES])
8420                 return -EINVAL;
8421
8422         /* Even though the attribute is u32, the specification says
8423          * u8, so let's make sure we don't overflow.
8424          */
8425         cs_count = nla_get_u32(info->attrs[NL80211_ATTR_CH_SWITCH_COUNT]);
8426         if (cs_count > 255)
8427                 return -EINVAL;
8428
8429         params.count = cs_count;
8430
8431         if (!need_new_beacon)
8432                 goto skip_beacons;
8433
8434         err = nl80211_parse_beacon(rdev, info->attrs, &params.beacon_after);
8435         if (err)
8436                 return err;
8437
8438         err = nla_parse_nested_deprecated(csa_attrs, NL80211_ATTR_MAX,
8439                                           info->attrs[NL80211_ATTR_CSA_IES],
8440                                           nl80211_policy, info->extack);
8441         if (err)
8442                 return err;
8443
8444         err = nl80211_parse_beacon(rdev, csa_attrs, &params.beacon_csa);
8445         if (err)
8446                 return err;
8447
8448         if (!csa_attrs[NL80211_ATTR_CSA_C_OFF_BEACON])
8449                 return -EINVAL;
8450
8451         len = nla_len(csa_attrs[NL80211_ATTR_CSA_C_OFF_BEACON]);
8452         if (!len || (len % sizeof(u16)))
8453                 return -EINVAL;
8454
8455         params.n_counter_offsets_beacon = len / sizeof(u16);
8456         if (rdev->wiphy.max_num_csa_counters &&
8457             (params.n_counter_offsets_beacon >
8458              rdev->wiphy.max_num_csa_counters))
8459                 return -EINVAL;
8460
8461         params.counter_offsets_beacon =
8462                 nla_data(csa_attrs[NL80211_ATTR_CSA_C_OFF_BEACON]);
8463
8464         /* sanity checks - counters should fit and be the same */
8465         for (i = 0; i < params.n_counter_offsets_beacon; i++) {
8466                 u16 offset = params.counter_offsets_beacon[i];
8467
8468                 if (offset >= params.beacon_csa.tail_len)
8469                         return -EINVAL;
8470
8471                 if (params.beacon_csa.tail[offset] != params.count)
8472                         return -EINVAL;
8473         }
8474
8475         if (csa_attrs[NL80211_ATTR_CSA_C_OFF_PRESP]) {
8476                 len = nla_len(csa_attrs[NL80211_ATTR_CSA_C_OFF_PRESP]);
8477                 if (!len || (len % sizeof(u16)))
8478                         return -EINVAL;
8479
8480                 params.n_counter_offsets_presp = len / sizeof(u16);
8481                 if (rdev->wiphy.max_num_csa_counters &&
8482                     (params.n_counter_offsets_presp >
8483                      rdev->wiphy.max_num_csa_counters))
8484                         return -EINVAL;
8485
8486                 params.counter_offsets_presp =
8487                         nla_data(csa_attrs[NL80211_ATTR_CSA_C_OFF_PRESP]);
8488
8489                 /* sanity checks - counters should fit and be the same */
8490                 for (i = 0; i < params.n_counter_offsets_presp; i++) {
8491                         u16 offset = params.counter_offsets_presp[i];
8492
8493                         if (offset >= params.beacon_csa.probe_resp_len)
8494                                 return -EINVAL;
8495
8496                         if (params.beacon_csa.probe_resp[offset] !=
8497                             params.count)
8498                                 return -EINVAL;
8499                 }
8500         }
8501
8502 skip_beacons:
8503         err = nl80211_parse_chandef(rdev, info, &params.chandef);
8504         if (err)
8505                 return err;
8506
8507         if (!cfg80211_reg_can_beacon_relax(&rdev->wiphy, &params.chandef,
8508                                            wdev->iftype))
8509                 return -EINVAL;
8510
8511         err = cfg80211_chandef_dfs_required(wdev->wiphy,
8512                                             &params.chandef,
8513                                             wdev->iftype);
8514         if (err < 0)
8515                 return err;
8516
8517         if (err > 0) {
8518                 params.radar_required = true;
8519                 if (need_handle_dfs_flag &&
8520                     !nla_get_flag(info->attrs[NL80211_ATTR_HANDLE_DFS])) {
8521                         return -EINVAL;
8522                 }
8523         }
8524
8525         if (info->attrs[NL80211_ATTR_CH_SWITCH_BLOCK_TX])
8526                 params.block_tx = true;
8527
8528         wdev_lock(wdev);
8529         err = rdev_channel_switch(rdev, dev, &params);
8530         wdev_unlock(wdev);
8531
8532         return err;
8533 }
8534
8535 static int nl80211_send_bss(struct sk_buff *msg, struct netlink_callback *cb,
8536                             u32 seq, int flags,
8537                             struct cfg80211_registered_device *rdev,
8538                             struct wireless_dev *wdev,
8539                             struct cfg80211_internal_bss *intbss)
8540 {
8541         struct cfg80211_bss *res = &intbss->pub;
8542         const struct cfg80211_bss_ies *ies;
8543         void *hdr;
8544         struct nlattr *bss;
8545
8546         ASSERT_WDEV_LOCK(wdev);
8547
8548         hdr = nl80211hdr_put(msg, NETLINK_CB(cb->skb).portid, seq, flags,
8549                              NL80211_CMD_NEW_SCAN_RESULTS);
8550         if (!hdr)
8551                 return -1;
8552
8553         genl_dump_check_consistent(cb, hdr);
8554
8555         if (nla_put_u32(msg, NL80211_ATTR_GENERATION, rdev->bss_generation))
8556                 goto nla_put_failure;
8557         if (wdev->netdev &&
8558             nla_put_u32(msg, NL80211_ATTR_IFINDEX, wdev->netdev->ifindex))
8559                 goto nla_put_failure;
8560         if (nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
8561                               NL80211_ATTR_PAD))
8562                 goto nla_put_failure;
8563
8564         bss = nla_nest_start_noflag(msg, NL80211_ATTR_BSS);
8565         if (!bss)
8566                 goto nla_put_failure;
8567         if ((!is_zero_ether_addr(res->bssid) &&
8568              nla_put(msg, NL80211_BSS_BSSID, ETH_ALEN, res->bssid)))
8569                 goto nla_put_failure;
8570
8571         rcu_read_lock();
8572         /* indicate whether we have probe response data or not */
8573         if (rcu_access_pointer(res->proberesp_ies) &&
8574             nla_put_flag(msg, NL80211_BSS_PRESP_DATA))
8575                 goto fail_unlock_rcu;
8576
8577         /* this pointer prefers to be pointed to probe response data
8578          * but is always valid
8579          */
8580         ies = rcu_dereference(res->ies);
8581         if (ies) {
8582                 if (nla_put_u64_64bit(msg, NL80211_BSS_TSF, ies->tsf,
8583                                       NL80211_BSS_PAD))
8584                         goto fail_unlock_rcu;
8585                 if (ies->len && nla_put(msg, NL80211_BSS_INFORMATION_ELEMENTS,
8586                                         ies->len, ies->data))
8587                         goto fail_unlock_rcu;
8588         }
8589
8590         /* and this pointer is always (unless driver didn't know) beacon data */
8591         ies = rcu_dereference(res->beacon_ies);
8592         if (ies && ies->from_beacon) {
8593                 if (nla_put_u64_64bit(msg, NL80211_BSS_BEACON_TSF, ies->tsf,
8594                                       NL80211_BSS_PAD))
8595                         goto fail_unlock_rcu;
8596                 if (ies->len && nla_put(msg, NL80211_BSS_BEACON_IES,
8597                                         ies->len, ies->data))
8598                         goto fail_unlock_rcu;
8599         }
8600         rcu_read_unlock();
8601
8602         if (res->beacon_interval &&
8603             nla_put_u16(msg, NL80211_BSS_BEACON_INTERVAL, res->beacon_interval))
8604                 goto nla_put_failure;
8605         if (nla_put_u16(msg, NL80211_BSS_CAPABILITY, res->capability) ||
8606             nla_put_u32(msg, NL80211_BSS_FREQUENCY, res->channel->center_freq) ||
8607             nla_put_u32(msg, NL80211_BSS_CHAN_WIDTH, res->scan_width) ||
8608             nla_put_u32(msg, NL80211_BSS_SEEN_MS_AGO,
8609                         jiffies_to_msecs(jiffies - intbss->ts)))
8610                 goto nla_put_failure;
8611
8612         if (intbss->parent_tsf &&
8613             (nla_put_u64_64bit(msg, NL80211_BSS_PARENT_TSF,
8614                                intbss->parent_tsf, NL80211_BSS_PAD) ||
8615              nla_put(msg, NL80211_BSS_PARENT_BSSID, ETH_ALEN,
8616                      intbss->parent_bssid)))
8617                 goto nla_put_failure;
8618
8619         if (intbss->ts_boottime &&
8620             nla_put_u64_64bit(msg, NL80211_BSS_LAST_SEEN_BOOTTIME,
8621                               intbss->ts_boottime, NL80211_BSS_PAD))
8622                 goto nla_put_failure;
8623
8624         if (!nl80211_put_signal(msg, intbss->pub.chains,
8625                                 intbss->pub.chain_signal,
8626                                 NL80211_BSS_CHAIN_SIGNAL))
8627                 goto nla_put_failure;
8628
8629         switch (rdev->wiphy.signal_type) {
8630         case CFG80211_SIGNAL_TYPE_MBM:
8631                 if (nla_put_u32(msg, NL80211_BSS_SIGNAL_MBM, res->signal))
8632                         goto nla_put_failure;
8633                 break;
8634         case CFG80211_SIGNAL_TYPE_UNSPEC:
8635                 if (nla_put_u8(msg, NL80211_BSS_SIGNAL_UNSPEC, res->signal))
8636                         goto nla_put_failure;
8637                 break;
8638         default:
8639                 break;
8640         }
8641
8642         switch (wdev->iftype) {
8643         case NL80211_IFTYPE_P2P_CLIENT:
8644         case NL80211_IFTYPE_STATION:
8645                 if (intbss == wdev->current_bss &&
8646                     nla_put_u32(msg, NL80211_BSS_STATUS,
8647                                 NL80211_BSS_STATUS_ASSOCIATED))
8648                         goto nla_put_failure;
8649                 break;
8650         case NL80211_IFTYPE_ADHOC:
8651                 if (intbss == wdev->current_bss &&
8652                     nla_put_u32(msg, NL80211_BSS_STATUS,
8653                                 NL80211_BSS_STATUS_IBSS_JOINED))
8654                         goto nla_put_failure;
8655                 break;
8656         default:
8657                 break;
8658         }
8659
8660         nla_nest_end(msg, bss);
8661
8662         genlmsg_end(msg, hdr);
8663         return 0;
8664
8665  fail_unlock_rcu:
8666         rcu_read_unlock();
8667  nla_put_failure:
8668         genlmsg_cancel(msg, hdr);
8669         return -EMSGSIZE;
8670 }
8671
8672 static int nl80211_dump_scan(struct sk_buff *skb, struct netlink_callback *cb)
8673 {
8674         struct cfg80211_registered_device *rdev;
8675         struct cfg80211_internal_bss *scan;
8676         struct wireless_dev *wdev;
8677         int start = cb->args[2], idx = 0;
8678         int err;
8679
8680         rtnl_lock();
8681         err = nl80211_prepare_wdev_dump(cb, &rdev, &wdev);
8682         if (err) {
8683                 rtnl_unlock();
8684                 return err;
8685         }
8686
8687         wdev_lock(wdev);
8688         spin_lock_bh(&rdev->bss_lock);
8689
8690         /*
8691          * dump_scan will be called multiple times to break up the scan results
8692          * into multiple messages.  It is unlikely that any more bss-es will be
8693          * expired after the first call, so only call only call this on the
8694          * first dump_scan invocation.
8695          */
8696         if (start == 0)
8697                 cfg80211_bss_expire(rdev);
8698
8699         cb->seq = rdev->bss_generation;
8700
8701         list_for_each_entry(scan, &rdev->bss_list, list) {
8702                 if (++idx <= start)
8703                         continue;
8704                 if (nl80211_send_bss(skb, cb,
8705                                 cb->nlh->nlmsg_seq, NLM_F_MULTI,
8706                                 rdev, wdev, scan) < 0) {
8707                         idx--;
8708                         break;
8709                 }
8710         }
8711
8712         spin_unlock_bh(&rdev->bss_lock);
8713         wdev_unlock(wdev);
8714
8715         cb->args[2] = idx;
8716         rtnl_unlock();
8717
8718         return skb->len;
8719 }
8720
8721 static int nl80211_send_survey(struct sk_buff *msg, u32 portid, u32 seq,
8722                                int flags, struct net_device *dev,
8723                                bool allow_radio_stats,
8724                                struct survey_info *survey)
8725 {
8726         void *hdr;
8727         struct nlattr *infoattr;
8728
8729         /* skip radio stats if userspace didn't request them */
8730         if (!survey->channel && !allow_radio_stats)
8731                 return 0;
8732
8733         hdr = nl80211hdr_put(msg, portid, seq, flags,
8734                              NL80211_CMD_NEW_SURVEY_RESULTS);
8735         if (!hdr)
8736                 return -ENOMEM;
8737
8738         if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex))
8739                 goto nla_put_failure;
8740
8741         infoattr = nla_nest_start_noflag(msg, NL80211_ATTR_SURVEY_INFO);
8742         if (!infoattr)
8743                 goto nla_put_failure;
8744
8745         if (survey->channel &&
8746             nla_put_u32(msg, NL80211_SURVEY_INFO_FREQUENCY,
8747                         survey->channel->center_freq))
8748                 goto nla_put_failure;
8749
8750         if ((survey->filled & SURVEY_INFO_NOISE_DBM) &&
8751             nla_put_u8(msg, NL80211_SURVEY_INFO_NOISE, survey->noise))
8752                 goto nla_put_failure;
8753         if ((survey->filled & SURVEY_INFO_IN_USE) &&
8754             nla_put_flag(msg, NL80211_SURVEY_INFO_IN_USE))
8755                 goto nla_put_failure;
8756         if ((survey->filled & SURVEY_INFO_TIME) &&
8757             nla_put_u64_64bit(msg, NL80211_SURVEY_INFO_TIME,
8758                         survey->time, NL80211_SURVEY_INFO_PAD))
8759                 goto nla_put_failure;
8760         if ((survey->filled & SURVEY_INFO_TIME_BUSY) &&
8761             nla_put_u64_64bit(msg, NL80211_SURVEY_INFO_TIME_BUSY,
8762                               survey->time_busy, NL80211_SURVEY_INFO_PAD))
8763                 goto nla_put_failure;
8764         if ((survey->filled & SURVEY_INFO_TIME_EXT_BUSY) &&
8765             nla_put_u64_64bit(msg, NL80211_SURVEY_INFO_TIME_EXT_BUSY,
8766                               survey->time_ext_busy, NL80211_SURVEY_INFO_PAD))
8767                 goto nla_put_failure;
8768         if ((survey->filled & SURVEY_INFO_TIME_RX) &&
8769             nla_put_u64_64bit(msg, NL80211_SURVEY_INFO_TIME_RX,
8770                               survey->time_rx, NL80211_SURVEY_INFO_PAD))
8771                 goto nla_put_failure;
8772         if ((survey->filled & SURVEY_INFO_TIME_TX) &&
8773             nla_put_u64_64bit(msg, NL80211_SURVEY_INFO_TIME_TX,
8774                               survey->time_tx, NL80211_SURVEY_INFO_PAD))
8775                 goto nla_put_failure;
8776         if ((survey->filled & SURVEY_INFO_TIME_SCAN) &&
8777             nla_put_u64_64bit(msg, NL80211_SURVEY_INFO_TIME_SCAN,
8778                               survey->time_scan, NL80211_SURVEY_INFO_PAD))
8779                 goto nla_put_failure;
8780
8781         nla_nest_end(msg, infoattr);
8782
8783         genlmsg_end(msg, hdr);
8784         return 0;
8785
8786  nla_put_failure:
8787         genlmsg_cancel(msg, hdr);
8788         return -EMSGSIZE;
8789 }
8790
8791 static int nl80211_dump_survey(struct sk_buff *skb, struct netlink_callback *cb)
8792 {
8793         struct nlattr **attrbuf;
8794         struct survey_info survey;
8795         struct cfg80211_registered_device *rdev;
8796         struct wireless_dev *wdev;
8797         int survey_idx = cb->args[2];
8798         int res;
8799         bool radio_stats;
8800
8801         attrbuf = kcalloc(NUM_NL80211_ATTR, sizeof(*attrbuf), GFP_KERNEL);
8802         if (!attrbuf)
8803                 return -ENOMEM;
8804
8805         rtnl_lock();
8806         res = nl80211_prepare_wdev_dump(cb, &rdev, &wdev);
8807         if (res)
8808                 goto out_err;
8809
8810         /* prepare_wdev_dump parsed the attributes */
8811         radio_stats = attrbuf[NL80211_ATTR_SURVEY_RADIO_STATS];
8812
8813         if (!wdev->netdev) {
8814                 res = -EINVAL;
8815                 goto out_err;
8816         }
8817
8818         if (!rdev->ops->dump_survey) {
8819                 res = -EOPNOTSUPP;
8820                 goto out_err;
8821         }
8822
8823         while (1) {
8824                 res = rdev_dump_survey(rdev, wdev->netdev, survey_idx, &survey);
8825                 if (res == -ENOENT)
8826                         break;
8827                 if (res)
8828                         goto out_err;
8829
8830                 /* don't send disabled channels, but do send non-channel data */
8831                 if (survey.channel &&
8832                     survey.channel->flags & IEEE80211_CHAN_DISABLED) {
8833                         survey_idx++;
8834                         continue;
8835                 }
8836
8837                 if (nl80211_send_survey(skb,
8838                                 NETLINK_CB(cb->skb).portid,
8839                                 cb->nlh->nlmsg_seq, NLM_F_MULTI,
8840                                 wdev->netdev, radio_stats, &survey) < 0)
8841                         goto out;
8842                 survey_idx++;
8843         }
8844
8845  out:
8846         cb->args[2] = survey_idx;
8847         res = skb->len;
8848  out_err:
8849         kfree(attrbuf);
8850         rtnl_unlock();
8851         return res;
8852 }
8853
8854 static bool nl80211_valid_wpa_versions(u32 wpa_versions)
8855 {
8856         return !(wpa_versions & ~(NL80211_WPA_VERSION_1 |
8857                                   NL80211_WPA_VERSION_2 |
8858                                   NL80211_WPA_VERSION_3));
8859 }
8860
8861 static int nl80211_authenticate(struct sk_buff *skb, struct genl_info *info)
8862 {
8863         struct cfg80211_registered_device *rdev = info->user_ptr[0];
8864         struct net_device *dev = info->user_ptr[1];
8865         struct ieee80211_channel *chan;
8866         const u8 *bssid, *ssid, *ie = NULL, *auth_data = NULL;
8867         int err, ssid_len, ie_len = 0, auth_data_len = 0;
8868         enum nl80211_auth_type auth_type;
8869         struct key_parse key;
8870         bool local_state_change;
8871
8872         if (!info->attrs[NL80211_ATTR_MAC])
8873                 return -EINVAL;
8874
8875         if (!info->attrs[NL80211_ATTR_AUTH_TYPE])
8876                 return -EINVAL;
8877
8878         if (!info->attrs[NL80211_ATTR_SSID])
8879                 return -EINVAL;
8880
8881         if (!info->attrs[NL80211_ATTR_WIPHY_FREQ])
8882                 return -EINVAL;
8883
8884         err = nl80211_parse_key(info, &key);
8885         if (err)
8886                 return err;
8887
8888         if (key.idx >= 0) {
8889                 if (key.type != -1 && key.type != NL80211_KEYTYPE_GROUP)
8890                         return -EINVAL;
8891                 if (!key.p.key || !key.p.key_len)
8892                         return -EINVAL;
8893                 if ((key.p.cipher != WLAN_CIPHER_SUITE_WEP40 ||
8894                      key.p.key_len != WLAN_KEY_LEN_WEP40) &&
8895                     (key.p.cipher != WLAN_CIPHER_SUITE_WEP104 ||
8896                      key.p.key_len != WLAN_KEY_LEN_WEP104))
8897                         return -EINVAL;
8898                 if (key.idx > 3)
8899                         return -EINVAL;
8900         } else {
8901                 key.p.key_len = 0;
8902                 key.p.key = NULL;
8903         }
8904
8905         if (key.idx >= 0) {
8906                 int i;
8907                 bool ok = false;
8908
8909                 for (i = 0; i < rdev->wiphy.n_cipher_suites; i++) {
8910                         if (key.p.cipher == rdev->wiphy.cipher_suites[i]) {
8911                                 ok = true;
8912                                 break;
8913                         }
8914                 }
8915                 if (!ok)
8916                         return -EINVAL;
8917         }
8918
8919         if (!rdev->ops->auth)
8920                 return -EOPNOTSUPP;
8921
8922         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
8923             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
8924                 return -EOPNOTSUPP;
8925
8926         bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
8927         chan = nl80211_get_valid_chan(&rdev->wiphy,
8928                                       info->attrs[NL80211_ATTR_WIPHY_FREQ]);
8929         if (!chan)
8930                 return -EINVAL;
8931
8932         ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
8933         ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
8934
8935         if (info->attrs[NL80211_ATTR_IE]) {
8936                 ie = nla_data(info->attrs[NL80211_ATTR_IE]);
8937                 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
8938         }
8939
8940         auth_type = nla_get_u32(info->attrs[NL80211_ATTR_AUTH_TYPE]);
8941         if (!nl80211_valid_auth_type(rdev, auth_type, NL80211_CMD_AUTHENTICATE))
8942                 return -EINVAL;
8943
8944         if ((auth_type == NL80211_AUTHTYPE_SAE ||
8945              auth_type == NL80211_AUTHTYPE_FILS_SK ||
8946              auth_type == NL80211_AUTHTYPE_FILS_SK_PFS ||
8947              auth_type == NL80211_AUTHTYPE_FILS_PK) &&
8948             !info->attrs[NL80211_ATTR_AUTH_DATA])
8949                 return -EINVAL;
8950
8951         if (info->attrs[NL80211_ATTR_AUTH_DATA]) {
8952                 if (auth_type != NL80211_AUTHTYPE_SAE &&
8953                     auth_type != NL80211_AUTHTYPE_FILS_SK &&
8954                     auth_type != NL80211_AUTHTYPE_FILS_SK_PFS &&
8955                     auth_type != NL80211_AUTHTYPE_FILS_PK)
8956                         return -EINVAL;
8957                 auth_data = nla_data(info->attrs[NL80211_ATTR_AUTH_DATA]);
8958                 auth_data_len = nla_len(info->attrs[NL80211_ATTR_AUTH_DATA]);
8959                 /* need to include at least Auth Transaction and Status Code */
8960                 if (auth_data_len < 4)
8961                         return -EINVAL;
8962         }
8963
8964         local_state_change = !!info->attrs[NL80211_ATTR_LOCAL_STATE_CHANGE];
8965
8966         /*
8967          * Since we no longer track auth state, ignore
8968          * requests to only change local state.
8969          */
8970         if (local_state_change)
8971                 return 0;
8972
8973         wdev_lock(dev->ieee80211_ptr);
8974         err = cfg80211_mlme_auth(rdev, dev, chan, auth_type, bssid,
8975                                  ssid, ssid_len, ie, ie_len,
8976                                  key.p.key, key.p.key_len, key.idx,
8977                                  auth_data, auth_data_len);
8978         wdev_unlock(dev->ieee80211_ptr);
8979         return err;
8980 }
8981
8982 static int validate_pae_over_nl80211(struct cfg80211_registered_device *rdev,
8983                                      struct genl_info *info)
8984 {
8985         if (!info->attrs[NL80211_ATTR_SOCKET_OWNER]) {
8986                 GENL_SET_ERR_MSG(info, "SOCKET_OWNER not set");
8987                 return -EINVAL;
8988         }
8989
8990         if (!rdev->ops->tx_control_port ||
8991             !wiphy_ext_feature_isset(&rdev->wiphy,
8992                                      NL80211_EXT_FEATURE_CONTROL_PORT_OVER_NL80211))
8993                 return -EOPNOTSUPP;
8994
8995         return 0;
8996 }
8997
8998 static int nl80211_crypto_settings(struct cfg80211_registered_device *rdev,
8999                                    struct genl_info *info,
9000                                    struct cfg80211_crypto_settings *settings,
9001                                    int cipher_limit)
9002 {
9003         memset(settings, 0, sizeof(*settings));
9004
9005         settings->control_port = info->attrs[NL80211_ATTR_CONTROL_PORT];
9006
9007         if (info->attrs[NL80211_ATTR_CONTROL_PORT_ETHERTYPE]) {
9008                 u16 proto;
9009
9010                 proto = nla_get_u16(
9011                         info->attrs[NL80211_ATTR_CONTROL_PORT_ETHERTYPE]);
9012                 settings->control_port_ethertype = cpu_to_be16(proto);
9013                 if (!(rdev->wiphy.flags & WIPHY_FLAG_CONTROL_PORT_PROTOCOL) &&
9014                     proto != ETH_P_PAE)
9015                         return -EINVAL;
9016                 if (info->attrs[NL80211_ATTR_CONTROL_PORT_NO_ENCRYPT])
9017                         settings->control_port_no_encrypt = true;
9018         } else
9019                 settings->control_port_ethertype = cpu_to_be16(ETH_P_PAE);
9020
9021         if (info->attrs[NL80211_ATTR_CONTROL_PORT_OVER_NL80211]) {
9022                 int r = validate_pae_over_nl80211(rdev, info);
9023
9024                 if (r < 0)
9025                         return r;
9026
9027                 settings->control_port_over_nl80211 = true;
9028         }
9029
9030         if (info->attrs[NL80211_ATTR_CIPHER_SUITES_PAIRWISE]) {
9031                 void *data;
9032                 int len, i;
9033
9034                 data = nla_data(info->attrs[NL80211_ATTR_CIPHER_SUITES_PAIRWISE]);
9035                 len = nla_len(info->attrs[NL80211_ATTR_CIPHER_SUITES_PAIRWISE]);
9036                 settings->n_ciphers_pairwise = len / sizeof(u32);
9037
9038                 if (len % sizeof(u32))
9039                         return -EINVAL;
9040
9041                 if (settings->n_ciphers_pairwise > cipher_limit)
9042                         return -EINVAL;
9043
9044                 memcpy(settings->ciphers_pairwise, data, len);
9045
9046                 for (i = 0; i < settings->n_ciphers_pairwise; i++)
9047                         if (!cfg80211_supported_cipher_suite(
9048                                         &rdev->wiphy,
9049                                         settings->ciphers_pairwise[i]))
9050                                 return -EINVAL;
9051         }
9052
9053         if (info->attrs[NL80211_ATTR_CIPHER_SUITE_GROUP]) {
9054                 settings->cipher_group =
9055                         nla_get_u32(info->attrs[NL80211_ATTR_CIPHER_SUITE_GROUP]);
9056                 if (!cfg80211_supported_cipher_suite(&rdev->wiphy,
9057                                                      settings->cipher_group))
9058                         return -EINVAL;
9059         }
9060
9061         if (info->attrs[NL80211_ATTR_WPA_VERSIONS]) {
9062                 settings->wpa_versions =
9063                         nla_get_u32(info->attrs[NL80211_ATTR_WPA_VERSIONS]);
9064                 if (!nl80211_valid_wpa_versions(settings->wpa_versions))
9065                         return -EINVAL;
9066         }
9067
9068         if (info->attrs[NL80211_ATTR_AKM_SUITES]) {
9069                 void *data;
9070                 int len;
9071
9072                 data = nla_data(info->attrs[NL80211_ATTR_AKM_SUITES]);
9073                 len = nla_len(info->attrs[NL80211_ATTR_AKM_SUITES]);
9074                 settings->n_akm_suites = len / sizeof(u32);
9075
9076                 if (len % sizeof(u32))
9077                         return -EINVAL;
9078
9079                 if (settings->n_akm_suites > NL80211_MAX_NR_AKM_SUITES)
9080                         return -EINVAL;
9081
9082                 memcpy(settings->akm_suites, data, len);
9083         }
9084
9085         if (info->attrs[NL80211_ATTR_PMK]) {
9086                 if (nla_len(info->attrs[NL80211_ATTR_PMK]) != WLAN_PMK_LEN)
9087                         return -EINVAL;
9088                 if (!wiphy_ext_feature_isset(&rdev->wiphy,
9089                                              NL80211_EXT_FEATURE_4WAY_HANDSHAKE_STA_PSK))
9090                         return -EINVAL;
9091                 settings->psk = nla_data(info->attrs[NL80211_ATTR_PMK]);
9092         }
9093
9094         if (info->attrs[NL80211_ATTR_SAE_PASSWORD]) {
9095                 if (!wiphy_ext_feature_isset(&rdev->wiphy,
9096                                              NL80211_EXT_FEATURE_SAE_OFFLOAD))
9097                         return -EINVAL;
9098                 settings->sae_pwd =
9099                         nla_data(info->attrs[NL80211_ATTR_SAE_PASSWORD]);
9100                 settings->sae_pwd_len =
9101                         nla_len(info->attrs[NL80211_ATTR_SAE_PASSWORD]);
9102         }
9103
9104         return 0;
9105 }
9106
9107 static int nl80211_associate(struct sk_buff *skb, struct genl_info *info)
9108 {
9109         struct cfg80211_registered_device *rdev = info->user_ptr[0];
9110         struct net_device *dev = info->user_ptr[1];
9111         struct ieee80211_channel *chan;
9112         struct cfg80211_assoc_request req = {};
9113         const u8 *bssid, *ssid;
9114         int err, ssid_len = 0;
9115
9116         if (dev->ieee80211_ptr->conn_owner_nlportid &&
9117             dev->ieee80211_ptr->conn_owner_nlportid != info->snd_portid)
9118                 return -EPERM;
9119
9120         if (!info->attrs[NL80211_ATTR_MAC] ||
9121             !info->attrs[NL80211_ATTR_SSID] ||
9122             !info->attrs[NL80211_ATTR_WIPHY_FREQ])
9123                 return -EINVAL;
9124
9125         if (!rdev->ops->assoc)
9126                 return -EOPNOTSUPP;
9127
9128         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
9129             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
9130                 return -EOPNOTSUPP;
9131
9132         bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
9133
9134         chan = nl80211_get_valid_chan(&rdev->wiphy,
9135                                       info->attrs[NL80211_ATTR_WIPHY_FREQ]);
9136         if (!chan)
9137                 return -EINVAL;
9138
9139         ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
9140         ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
9141
9142         if (info->attrs[NL80211_ATTR_IE]) {
9143                 req.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
9144                 req.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
9145         }
9146
9147         if (info->attrs[NL80211_ATTR_USE_MFP]) {
9148                 enum nl80211_mfp mfp =
9149                         nla_get_u32(info->attrs[NL80211_ATTR_USE_MFP]);
9150                 if (mfp == NL80211_MFP_REQUIRED)
9151                         req.use_mfp = true;
9152                 else if (mfp != NL80211_MFP_NO)
9153                         return -EINVAL;
9154         }
9155
9156         if (info->attrs[NL80211_ATTR_PREV_BSSID])
9157                 req.prev_bssid = nla_data(info->attrs[NL80211_ATTR_PREV_BSSID]);
9158
9159         if (nla_get_flag(info->attrs[NL80211_ATTR_DISABLE_HT]))
9160                 req.flags |= ASSOC_REQ_DISABLE_HT;
9161
9162         if (info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK])
9163                 memcpy(&req.ht_capa_mask,
9164                        nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]),
9165                        sizeof(req.ht_capa_mask));
9166
9167         if (info->attrs[NL80211_ATTR_HT_CAPABILITY]) {
9168                 if (!info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK])
9169                         return -EINVAL;
9170                 memcpy(&req.ht_capa,
9171                        nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]),
9172                        sizeof(req.ht_capa));
9173         }
9174
9175         if (nla_get_flag(info->attrs[NL80211_ATTR_DISABLE_VHT]))
9176                 req.flags |= ASSOC_REQ_DISABLE_VHT;
9177
9178         if (info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK])
9179                 memcpy(&req.vht_capa_mask,
9180                        nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK]),
9181                        sizeof(req.vht_capa_mask));
9182
9183         if (info->attrs[NL80211_ATTR_VHT_CAPABILITY]) {
9184                 if (!info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK])
9185                         return -EINVAL;
9186                 memcpy(&req.vht_capa,
9187                        nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY]),
9188                        sizeof(req.vht_capa));
9189         }
9190
9191         if (nla_get_flag(info->attrs[NL80211_ATTR_USE_RRM])) {
9192                 if (!((rdev->wiphy.features &
9193                         NL80211_FEATURE_DS_PARAM_SET_IE_IN_PROBES) &&
9194                        (rdev->wiphy.features & NL80211_FEATURE_QUIET)) &&
9195                     !wiphy_ext_feature_isset(&rdev->wiphy,
9196                                              NL80211_EXT_FEATURE_RRM))
9197                         return -EINVAL;
9198                 req.flags |= ASSOC_REQ_USE_RRM;
9199         }
9200
9201         if (info->attrs[NL80211_ATTR_FILS_KEK]) {
9202                 req.fils_kek = nla_data(info->attrs[NL80211_ATTR_FILS_KEK]);
9203                 req.fils_kek_len = nla_len(info->attrs[NL80211_ATTR_FILS_KEK]);
9204                 if (!info->attrs[NL80211_ATTR_FILS_NONCES])
9205                         return -EINVAL;
9206                 req.fils_nonces =
9207                         nla_data(info->attrs[NL80211_ATTR_FILS_NONCES]);
9208         }
9209
9210         err = nl80211_crypto_settings(rdev, info, &req.crypto, 1);
9211         if (!err) {
9212                 wdev_lock(dev->ieee80211_ptr);
9213
9214                 err = cfg80211_mlme_assoc(rdev, dev, chan, bssid,
9215                                           ssid, ssid_len, &req);
9216
9217                 if (!err && info->attrs[NL80211_ATTR_SOCKET_OWNER]) {
9218                         dev->ieee80211_ptr->conn_owner_nlportid =
9219                                 info->snd_portid;
9220                         memcpy(dev->ieee80211_ptr->disconnect_bssid,
9221                                bssid, ETH_ALEN);
9222                 }
9223
9224                 wdev_unlock(dev->ieee80211_ptr);
9225         }
9226
9227         return err;
9228 }
9229
9230 static int nl80211_deauthenticate(struct sk_buff *skb, struct genl_info *info)
9231 {
9232         struct cfg80211_registered_device *rdev = info->user_ptr[0];
9233         struct net_device *dev = info->user_ptr[1];
9234         const u8 *ie = NULL, *bssid;
9235         int ie_len = 0, err;
9236         u16 reason_code;
9237         bool local_state_change;
9238
9239         if (dev->ieee80211_ptr->conn_owner_nlportid &&
9240             dev->ieee80211_ptr->conn_owner_nlportid != info->snd_portid)
9241                 return -EPERM;
9242
9243         if (!info->attrs[NL80211_ATTR_MAC])
9244                 return -EINVAL;
9245
9246         if (!info->attrs[NL80211_ATTR_REASON_CODE])
9247                 return -EINVAL;
9248
9249         if (!rdev->ops->deauth)
9250                 return -EOPNOTSUPP;
9251
9252         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
9253             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
9254                 return -EOPNOTSUPP;
9255
9256         bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
9257
9258         reason_code = nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]);
9259         if (reason_code == 0) {
9260                 /* Reason Code 0 is reserved */
9261                 return -EINVAL;
9262         }
9263
9264         if (info->attrs[NL80211_ATTR_IE]) {
9265                 ie = nla_data(info->attrs[NL80211_ATTR_IE]);
9266                 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
9267         }
9268
9269         local_state_change = !!info->attrs[NL80211_ATTR_LOCAL_STATE_CHANGE];
9270
9271         wdev_lock(dev->ieee80211_ptr);
9272         err = cfg80211_mlme_deauth(rdev, dev, bssid, ie, ie_len, reason_code,
9273                                    local_state_change);
9274         wdev_unlock(dev->ieee80211_ptr);
9275         return err;
9276 }
9277
9278 static int nl80211_disassociate(struct sk_buff *skb, struct genl_info *info)
9279 {
9280         struct cfg80211_registered_device *rdev = info->user_ptr[0];
9281         struct net_device *dev = info->user_ptr[1];
9282         const u8 *ie = NULL, *bssid;
9283         int ie_len = 0, err;
9284         u16 reason_code;
9285         bool local_state_change;
9286
9287         if (dev->ieee80211_ptr->conn_owner_nlportid &&
9288             dev->ieee80211_ptr->conn_owner_nlportid != info->snd_portid)
9289                 return -EPERM;
9290
9291         if (!info->attrs[NL80211_ATTR_MAC])
9292                 return -EINVAL;
9293
9294         if (!info->attrs[NL80211_ATTR_REASON_CODE])
9295                 return -EINVAL;
9296
9297         if (!rdev->ops->disassoc)
9298                 return -EOPNOTSUPP;
9299
9300         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
9301             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
9302                 return -EOPNOTSUPP;
9303
9304         bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
9305
9306         reason_code = nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]);
9307         if (reason_code == 0) {
9308                 /* Reason Code 0 is reserved */
9309                 return -EINVAL;
9310         }
9311
9312         if (info->attrs[NL80211_ATTR_IE]) {
9313                 ie = nla_data(info->attrs[NL80211_ATTR_IE]);
9314                 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
9315         }
9316
9317         local_state_change = !!info->attrs[NL80211_ATTR_LOCAL_STATE_CHANGE];
9318
9319         wdev_lock(dev->ieee80211_ptr);
9320         err = cfg80211_mlme_disassoc(rdev, dev, bssid, ie, ie_len, reason_code,
9321                                      local_state_change);
9322         wdev_unlock(dev->ieee80211_ptr);
9323         return err;
9324 }
9325
9326 static bool
9327 nl80211_parse_mcast_rate(struct cfg80211_registered_device *rdev,
9328                          int mcast_rate[NUM_NL80211_BANDS],
9329                          int rateval)
9330 {
9331         struct wiphy *wiphy = &rdev->wiphy;
9332         bool found = false;
9333         int band, i;
9334
9335         for (band = 0; band < NUM_NL80211_BANDS; band++) {
9336                 struct ieee80211_supported_band *sband;
9337
9338                 sband = wiphy->bands[band];
9339                 if (!sband)
9340                         continue;
9341
9342                 for (i = 0; i < sband->n_bitrates; i++) {
9343                         if (sband->bitrates[i].bitrate == rateval) {
9344                                 mcast_rate[band] = i + 1;
9345                                 found = true;
9346                                 break;
9347                         }
9348                 }
9349         }
9350
9351         return found;
9352 }
9353
9354 static int nl80211_join_ibss(struct sk_buff *skb, struct genl_info *info)
9355 {
9356         struct cfg80211_registered_device *rdev = info->user_ptr[0];
9357         struct net_device *dev = info->user_ptr[1];
9358         struct cfg80211_ibss_params ibss;
9359         struct wiphy *wiphy;
9360         struct cfg80211_cached_keys *connkeys = NULL;
9361         int err;
9362
9363         memset(&ibss, 0, sizeof(ibss));
9364
9365         if (!info->attrs[NL80211_ATTR_SSID] ||
9366             !nla_len(info->attrs[NL80211_ATTR_SSID]))
9367                 return -EINVAL;
9368
9369         ibss.beacon_interval = 100;
9370
9371         if (info->attrs[NL80211_ATTR_BEACON_INTERVAL])
9372                 ibss.beacon_interval =
9373                         nla_get_u32(info->attrs[NL80211_ATTR_BEACON_INTERVAL]);
9374
9375         err = cfg80211_validate_beacon_int(rdev, NL80211_IFTYPE_ADHOC,
9376                                            ibss.beacon_interval);
9377         if (err)
9378                 return err;
9379
9380         if (!rdev->ops->join_ibss)
9381                 return -EOPNOTSUPP;
9382
9383         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_ADHOC)
9384                 return -EOPNOTSUPP;
9385
9386         wiphy = &rdev->wiphy;
9387
9388         if (info->attrs[NL80211_ATTR_MAC]) {
9389                 ibss.bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
9390
9391                 if (!is_valid_ether_addr(ibss.bssid))
9392                         return -EINVAL;
9393         }
9394         ibss.ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
9395         ibss.ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
9396
9397         if (info->attrs[NL80211_ATTR_IE]) {
9398                 ibss.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
9399                 ibss.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
9400         }
9401
9402         err = nl80211_parse_chandef(rdev, info, &ibss.chandef);
9403         if (err)
9404                 return err;
9405
9406         if (!cfg80211_reg_can_beacon(&rdev->wiphy, &ibss.chandef,
9407                                      NL80211_IFTYPE_ADHOC))
9408                 return -EINVAL;
9409
9410         switch (ibss.chandef.width) {
9411         case NL80211_CHAN_WIDTH_5:
9412         case NL80211_CHAN_WIDTH_10:
9413         case NL80211_CHAN_WIDTH_20_NOHT:
9414                 break;
9415         case NL80211_CHAN_WIDTH_20:
9416         case NL80211_CHAN_WIDTH_40:
9417                 if (!(rdev->wiphy.features & NL80211_FEATURE_HT_IBSS))
9418                         return -EINVAL;
9419                 break;
9420         case NL80211_CHAN_WIDTH_80:
9421         case NL80211_CHAN_WIDTH_80P80:
9422         case NL80211_CHAN_WIDTH_160:
9423                 if (!(rdev->wiphy.features & NL80211_FEATURE_HT_IBSS))
9424                         return -EINVAL;
9425                 if (!wiphy_ext_feature_isset(&rdev->wiphy,
9426                                              NL80211_EXT_FEATURE_VHT_IBSS))
9427                         return -EINVAL;
9428                 break;
9429         default:
9430                 return -EINVAL;
9431         }
9432
9433         ibss.channel_fixed = !!info->attrs[NL80211_ATTR_FREQ_FIXED];
9434         ibss.privacy = !!info->attrs[NL80211_ATTR_PRIVACY];
9435
9436         if (info->attrs[NL80211_ATTR_BSS_BASIC_RATES]) {
9437                 u8 *rates =
9438                         nla_data(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
9439                 int n_rates =
9440                         nla_len(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
9441                 struct ieee80211_supported_band *sband =
9442                         wiphy->bands[ibss.chandef.chan->band];
9443
9444                 err = ieee80211_get_ratemask(sband, rates, n_rates,
9445                                              &ibss.basic_rates);
9446                 if (err)
9447                         return err;
9448         }
9449
9450         if (info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK])
9451                 memcpy(&ibss.ht_capa_mask,
9452                        nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]),
9453                        sizeof(ibss.ht_capa_mask));
9454
9455         if (info->attrs[NL80211_ATTR_HT_CAPABILITY]) {
9456                 if (!info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK])
9457                         return -EINVAL;
9458                 memcpy(&ibss.ht_capa,
9459                        nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]),
9460                        sizeof(ibss.ht_capa));
9461         }
9462
9463         if (info->attrs[NL80211_ATTR_MCAST_RATE] &&
9464             !nl80211_parse_mcast_rate(rdev, ibss.mcast_rate,
9465                         nla_get_u32(info->attrs[NL80211_ATTR_MCAST_RATE])))
9466                 return -EINVAL;
9467
9468         if (ibss.privacy && info->attrs[NL80211_ATTR_KEYS]) {
9469                 bool no_ht = false;
9470
9471                 connkeys = nl80211_parse_connkeys(rdev, info, &no_ht);
9472                 if (IS_ERR(connkeys))
9473                         return PTR_ERR(connkeys);
9474
9475                 if ((ibss.chandef.width != NL80211_CHAN_WIDTH_20_NOHT) &&
9476                     no_ht) {
9477                         kzfree(connkeys);
9478                         return -EINVAL;
9479                 }
9480         }
9481
9482         ibss.control_port =
9483                 nla_get_flag(info->attrs[NL80211_ATTR_CONTROL_PORT]);
9484
9485         if (info->attrs[NL80211_ATTR_CONTROL_PORT_OVER_NL80211]) {
9486                 int r = validate_pae_over_nl80211(rdev, info);
9487
9488                 if (r < 0) {
9489                         kzfree(connkeys);
9490                         return r;
9491                 }
9492
9493                 ibss.control_port_over_nl80211 = true;
9494         }
9495
9496         ibss.userspace_handles_dfs =
9497                 nla_get_flag(info->attrs[NL80211_ATTR_HANDLE_DFS]);
9498
9499         wdev_lock(dev->ieee80211_ptr);
9500         err = __cfg80211_join_ibss(rdev, dev, &ibss, connkeys);
9501         if (err)
9502                 kzfree(connkeys);
9503         else if (info->attrs[NL80211_ATTR_SOCKET_OWNER])
9504                 dev->ieee80211_ptr->conn_owner_nlportid = info->snd_portid;
9505         wdev_unlock(dev->ieee80211_ptr);
9506
9507         return err;
9508 }
9509
9510 static int nl80211_leave_ibss(struct sk_buff *skb, struct genl_info *info)
9511 {
9512         struct cfg80211_registered_device *rdev = info->user_ptr[0];
9513         struct net_device *dev = info->user_ptr[1];
9514
9515         if (!rdev->ops->leave_ibss)
9516                 return -EOPNOTSUPP;
9517
9518         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_ADHOC)
9519                 return -EOPNOTSUPP;
9520
9521         return cfg80211_leave_ibss(rdev, dev, false);
9522 }
9523
9524 static int nl80211_set_mcast_rate(struct sk_buff *skb, struct genl_info *info)
9525 {
9526         struct cfg80211_registered_device *rdev = info->user_ptr[0];
9527         struct net_device *dev = info->user_ptr[1];
9528         int mcast_rate[NUM_NL80211_BANDS];
9529         u32 nla_rate;
9530         int err;
9531
9532         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_ADHOC &&
9533             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT &&
9534             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_OCB)
9535                 return -EOPNOTSUPP;
9536
9537         if (!rdev->ops->set_mcast_rate)
9538                 return -EOPNOTSUPP;
9539
9540         memset(mcast_rate, 0, sizeof(mcast_rate));
9541
9542         if (!info->attrs[NL80211_ATTR_MCAST_RATE])
9543                 return -EINVAL;
9544
9545         nla_rate = nla_get_u32(info->attrs[NL80211_ATTR_MCAST_RATE]);
9546         if (!nl80211_parse_mcast_rate(rdev, mcast_rate, nla_rate))
9547                 return -EINVAL;
9548
9549         err = rdev_set_mcast_rate(rdev, dev, mcast_rate);
9550
9551         return err;
9552 }
9553
9554 static struct sk_buff *
9555 __cfg80211_alloc_vendor_skb(struct cfg80211_registered_device *rdev,
9556                             struct wireless_dev *wdev, int approxlen,
9557                             u32 portid, u32 seq, enum nl80211_commands cmd,
9558                             enum nl80211_attrs attr,
9559                             const struct nl80211_vendor_cmd_info *info,
9560                             gfp_t gfp)
9561 {
9562         struct sk_buff *skb;
9563         void *hdr;
9564         struct nlattr *data;
9565
9566         skb = nlmsg_new(approxlen + 100, gfp);
9567         if (!skb)
9568                 return NULL;
9569
9570         hdr = nl80211hdr_put(skb, portid, seq, 0, cmd);
9571         if (!hdr) {
9572                 kfree_skb(skb);
9573                 return NULL;
9574         }
9575
9576         if (nla_put_u32(skb, NL80211_ATTR_WIPHY, rdev->wiphy_idx))
9577                 goto nla_put_failure;
9578
9579         if (info) {
9580                 if (nla_put_u32(skb, NL80211_ATTR_VENDOR_ID,
9581                                 info->vendor_id))
9582                         goto nla_put_failure;
9583                 if (nla_put_u32(skb, NL80211_ATTR_VENDOR_SUBCMD,
9584                                 info->subcmd))
9585                         goto nla_put_failure;
9586         }
9587
9588         if (wdev) {
9589                 if (nla_put_u64_64bit(skb, NL80211_ATTR_WDEV,
9590                                       wdev_id(wdev), NL80211_ATTR_PAD))
9591                         goto nla_put_failure;
9592                 if (wdev->netdev &&
9593                     nla_put_u32(skb, NL80211_ATTR_IFINDEX,
9594                                 wdev->netdev->ifindex))
9595                         goto nla_put_failure;
9596         }
9597
9598         data = nla_nest_start_noflag(skb, attr);
9599         if (!data)
9600                 goto nla_put_failure;
9601
9602         ((void **)skb->cb)[0] = rdev;
9603         ((void **)skb->cb)[1] = hdr;
9604         ((void **)skb->cb)[2] = data;
9605
9606         return skb;
9607
9608  nla_put_failure:
9609         kfree_skb(skb);
9610         return NULL;
9611 }
9612
9613 struct sk_buff *__cfg80211_alloc_event_skb(struct wiphy *wiphy,
9614                                            struct wireless_dev *wdev,
9615                                            enum nl80211_commands cmd,
9616                                            enum nl80211_attrs attr,
9617                                            unsigned int portid,
9618                                            int vendor_event_idx,
9619                                            int approxlen, gfp_t gfp)
9620 {
9621         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
9622         const struct nl80211_vendor_cmd_info *info;
9623
9624         switch (cmd) {
9625         case NL80211_CMD_TESTMODE:
9626                 if (WARN_ON(vendor_event_idx != -1))
9627                         return NULL;
9628                 info = NULL;
9629                 break;
9630         case NL80211_CMD_VENDOR:
9631                 if (WARN_ON(vendor_event_idx < 0 ||
9632                             vendor_event_idx >= wiphy->n_vendor_events))
9633                         return NULL;
9634                 info = &wiphy->vendor_events[vendor_event_idx];
9635                 break;
9636         default:
9637                 WARN_ON(1);
9638                 return NULL;
9639         }
9640
9641         return __cfg80211_alloc_vendor_skb(rdev, wdev, approxlen, portid, 0,
9642                                            cmd, attr, info, gfp);
9643 }
9644 EXPORT_SYMBOL(__cfg80211_alloc_event_skb);
9645
9646 void __cfg80211_send_event_skb(struct sk_buff *skb, gfp_t gfp)
9647 {
9648         struct cfg80211_registered_device *rdev = ((void **)skb->cb)[0];
9649         void *hdr = ((void **)skb->cb)[1];
9650         struct nlmsghdr *nlhdr = nlmsg_hdr(skb);
9651         struct nlattr *data = ((void **)skb->cb)[2];
9652         enum nl80211_multicast_groups mcgrp = NL80211_MCGRP_TESTMODE;
9653
9654         /* clear CB data for netlink core to own from now on */
9655         memset(skb->cb, 0, sizeof(skb->cb));
9656
9657         nla_nest_end(skb, data);
9658         genlmsg_end(skb, hdr);
9659
9660         if (nlhdr->nlmsg_pid) {
9661                 genlmsg_unicast(wiphy_net(&rdev->wiphy), skb,
9662                                 nlhdr->nlmsg_pid);
9663         } else {
9664                 if (data->nla_type == NL80211_ATTR_VENDOR_DATA)
9665                         mcgrp = NL80211_MCGRP_VENDOR;
9666
9667                 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy),
9668                                         skb, 0, mcgrp, gfp);
9669         }
9670 }
9671 EXPORT_SYMBOL(__cfg80211_send_event_skb);
9672
9673 #ifdef CONFIG_NL80211_TESTMODE
9674 static int nl80211_testmode_do(struct sk_buff *skb, struct genl_info *info)
9675 {
9676         struct cfg80211_registered_device *rdev = info->user_ptr[0];
9677         struct wireless_dev *wdev =
9678                 __cfg80211_wdev_from_attrs(genl_info_net(info), info->attrs);
9679         int err;
9680
9681         if (!rdev->ops->testmode_cmd)
9682                 return -EOPNOTSUPP;
9683
9684         if (IS_ERR(wdev)) {
9685                 err = PTR_ERR(wdev);
9686                 if (err != -EINVAL)
9687                         return err;
9688                 wdev = NULL;
9689         } else if (wdev->wiphy != &rdev->wiphy) {
9690                 return -EINVAL;
9691         }
9692
9693         if (!info->attrs[NL80211_ATTR_TESTDATA])
9694                 return -EINVAL;
9695
9696         rdev->cur_cmd_info = info;
9697         err = rdev_testmode_cmd(rdev, wdev,
9698                                 nla_data(info->attrs[NL80211_ATTR_TESTDATA]),
9699                                 nla_len(info->attrs[NL80211_ATTR_TESTDATA]));
9700         rdev->cur_cmd_info = NULL;
9701
9702         return err;
9703 }
9704
9705 static int nl80211_testmode_dump(struct sk_buff *skb,
9706                                  struct netlink_callback *cb)
9707 {
9708         struct cfg80211_registered_device *rdev;
9709         struct nlattr **attrbuf = NULL;
9710         int err;
9711         long phy_idx;
9712         void *data = NULL;
9713         int data_len = 0;
9714
9715         rtnl_lock();
9716
9717         if (cb->args[0]) {
9718                 /*
9719                  * 0 is a valid index, but not valid for args[0],
9720                  * so we need to offset by 1.
9721                  */
9722                 phy_idx = cb->args[0] - 1;
9723
9724                 rdev = cfg80211_rdev_by_wiphy_idx(phy_idx);
9725                 if (!rdev) {
9726                         err = -ENOENT;
9727                         goto out_err;
9728                 }
9729         } else {
9730                 attrbuf = kcalloc(NUM_NL80211_ATTR, sizeof(*attrbuf),
9731                                   GFP_KERNEL);
9732                 if (!attrbuf) {
9733                         err = -ENOMEM;
9734                         goto out_err;
9735                 }
9736
9737                 err = nlmsg_parse_deprecated(cb->nlh,
9738                                              GENL_HDRLEN + nl80211_fam.hdrsize,
9739                                              attrbuf, nl80211_fam.maxattr,
9740                                              nl80211_policy, NULL);
9741                 if (err)
9742                         goto out_err;
9743
9744                 rdev = __cfg80211_rdev_from_attrs(sock_net(skb->sk), attrbuf);
9745                 if (IS_ERR(rdev)) {
9746                         err = PTR_ERR(rdev);
9747                         goto out_err;
9748                 }
9749                 phy_idx = rdev->wiphy_idx;
9750
9751                 if (attrbuf[NL80211_ATTR_TESTDATA])
9752                         cb->args[1] = (long)attrbuf[NL80211_ATTR_TESTDATA];
9753         }
9754
9755         if (cb->args[1]) {
9756                 data = nla_data((void *)cb->args[1]);
9757                 data_len = nla_len((void *)cb->args[1]);
9758         }
9759
9760         if (!rdev->ops->testmode_dump) {
9761                 err = -EOPNOTSUPP;
9762                 goto out_err;
9763         }
9764
9765         while (1) {
9766                 void *hdr = nl80211hdr_put(skb, NETLINK_CB(cb->skb).portid,
9767                                            cb->nlh->nlmsg_seq, NLM_F_MULTI,
9768                                            NL80211_CMD_TESTMODE);
9769                 struct nlattr *tmdata;
9770
9771                 if (!hdr)
9772                         break;
9773
9774                 if (nla_put_u32(skb, NL80211_ATTR_WIPHY, phy_idx)) {
9775                         genlmsg_cancel(skb, hdr);
9776                         break;
9777                 }
9778
9779                 tmdata = nla_nest_start_noflag(skb, NL80211_ATTR_TESTDATA);
9780                 if (!tmdata) {
9781                         genlmsg_cancel(skb, hdr);
9782                         break;
9783                 }
9784                 err = rdev_testmode_dump(rdev, skb, cb, data, data_len);
9785                 nla_nest_end(skb, tmdata);
9786
9787                 if (err == -ENOBUFS || err == -ENOENT) {
9788                         genlmsg_cancel(skb, hdr);
9789                         break;
9790                 } else if (err) {
9791                         genlmsg_cancel(skb, hdr);
9792                         goto out_err;
9793                 }
9794
9795                 genlmsg_end(skb, hdr);
9796         }
9797
9798         err = skb->len;
9799         /* see above */
9800         cb->args[0] = phy_idx + 1;
9801  out_err:
9802         kfree(attrbuf);
9803         rtnl_unlock();
9804         return err;
9805 }
9806 #endif
9807
9808 static int nl80211_connect(struct sk_buff *skb, struct genl_info *info)
9809 {
9810         struct cfg80211_registered_device *rdev = info->user_ptr[0];
9811         struct net_device *dev = info->user_ptr[1];
9812         struct cfg80211_connect_params connect;
9813         struct wiphy *wiphy;
9814         struct cfg80211_cached_keys *connkeys = NULL;
9815         int err;
9816
9817         memset(&connect, 0, sizeof(connect));
9818
9819         if (!info->attrs[NL80211_ATTR_SSID] ||
9820             !nla_len(info->attrs[NL80211_ATTR_SSID]))
9821                 return -EINVAL;
9822
9823         if (info->attrs[NL80211_ATTR_AUTH_TYPE]) {
9824                 connect.auth_type =
9825                         nla_get_u32(info->attrs[NL80211_ATTR_AUTH_TYPE]);
9826                 if (!nl80211_valid_auth_type(rdev, connect.auth_type,
9827                                              NL80211_CMD_CONNECT))
9828                         return -EINVAL;
9829         } else
9830                 connect.auth_type = NL80211_AUTHTYPE_AUTOMATIC;
9831
9832         connect.privacy = info->attrs[NL80211_ATTR_PRIVACY];
9833
9834         if (info->attrs[NL80211_ATTR_WANT_1X_4WAY_HS] &&
9835             !wiphy_ext_feature_isset(&rdev->wiphy,
9836                                      NL80211_EXT_FEATURE_4WAY_HANDSHAKE_STA_1X))
9837                 return -EINVAL;
9838         connect.want_1x = info->attrs[NL80211_ATTR_WANT_1X_4WAY_HS];
9839
9840         err = nl80211_crypto_settings(rdev, info, &connect.crypto,
9841                                       NL80211_MAX_NR_CIPHER_SUITES);
9842         if (err)
9843                 return err;
9844
9845         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
9846             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
9847                 return -EOPNOTSUPP;
9848
9849         wiphy = &rdev->wiphy;
9850
9851         connect.bg_scan_period = -1;
9852         if (info->attrs[NL80211_ATTR_BG_SCAN_PERIOD] &&
9853                 (wiphy->flags & WIPHY_FLAG_SUPPORTS_FW_ROAM)) {
9854                 connect.bg_scan_period =
9855                         nla_get_u16(info->attrs[NL80211_ATTR_BG_SCAN_PERIOD]);
9856         }
9857
9858         if (info->attrs[NL80211_ATTR_MAC])
9859                 connect.bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
9860         else if (info->attrs[NL80211_ATTR_MAC_HINT])
9861                 connect.bssid_hint =
9862                         nla_data(info->attrs[NL80211_ATTR_MAC_HINT]);
9863         connect.ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
9864         connect.ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
9865
9866         if (info->attrs[NL80211_ATTR_IE]) {
9867                 connect.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
9868                 connect.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
9869         }
9870
9871         if (info->attrs[NL80211_ATTR_USE_MFP]) {
9872                 connect.mfp = nla_get_u32(info->attrs[NL80211_ATTR_USE_MFP]);
9873                 if (connect.mfp == NL80211_MFP_OPTIONAL &&
9874                     !wiphy_ext_feature_isset(&rdev->wiphy,
9875                                              NL80211_EXT_FEATURE_MFP_OPTIONAL))
9876                         return -EOPNOTSUPP;
9877         } else {
9878                 connect.mfp = NL80211_MFP_NO;
9879         }
9880
9881         if (info->attrs[NL80211_ATTR_PREV_BSSID])
9882                 connect.prev_bssid =
9883                         nla_data(info->attrs[NL80211_ATTR_PREV_BSSID]);
9884
9885         if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
9886                 connect.channel = nl80211_get_valid_chan(
9887                         wiphy, info->attrs[NL80211_ATTR_WIPHY_FREQ]);
9888                 if (!connect.channel)
9889                         return -EINVAL;
9890         } else if (info->attrs[NL80211_ATTR_WIPHY_FREQ_HINT]) {
9891                 connect.channel_hint = nl80211_get_valid_chan(
9892                         wiphy, info->attrs[NL80211_ATTR_WIPHY_FREQ_HINT]);
9893                 if (!connect.channel_hint)
9894                         return -EINVAL;
9895         }
9896
9897         if (connect.privacy && info->attrs[NL80211_ATTR_KEYS]) {
9898                 connkeys = nl80211_parse_connkeys(rdev, info, NULL);
9899                 if (IS_ERR(connkeys))
9900                         return PTR_ERR(connkeys);
9901         }
9902
9903         if (nla_get_flag(info->attrs[NL80211_ATTR_DISABLE_HT]))
9904                 connect.flags |= ASSOC_REQ_DISABLE_HT;
9905
9906         if (info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK])
9907                 memcpy(&connect.ht_capa_mask,
9908                        nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]),
9909                        sizeof(connect.ht_capa_mask));
9910
9911         if (info->attrs[NL80211_ATTR_HT_CAPABILITY]) {
9912                 if (!info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]) {
9913                         kzfree(connkeys);
9914                         return -EINVAL;
9915                 }
9916                 memcpy(&connect.ht_capa,
9917                        nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]),
9918                        sizeof(connect.ht_capa));
9919         }
9920
9921         if (nla_get_flag(info->attrs[NL80211_ATTR_DISABLE_VHT]))
9922                 connect.flags |= ASSOC_REQ_DISABLE_VHT;
9923
9924         if (info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK])
9925                 memcpy(&connect.vht_capa_mask,
9926                        nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK]),
9927                        sizeof(connect.vht_capa_mask));
9928
9929         if (info->attrs[NL80211_ATTR_VHT_CAPABILITY]) {
9930                 if (!info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK]) {
9931                         kzfree(connkeys);
9932                         return -EINVAL;
9933                 }
9934                 memcpy(&connect.vht_capa,
9935                        nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY]),
9936                        sizeof(connect.vht_capa));
9937         }
9938
9939         if (nla_get_flag(info->attrs[NL80211_ATTR_USE_RRM])) {
9940                 if (!((rdev->wiphy.features &
9941                         NL80211_FEATURE_DS_PARAM_SET_IE_IN_PROBES) &&
9942                        (rdev->wiphy.features & NL80211_FEATURE_QUIET)) &&
9943                     !wiphy_ext_feature_isset(&rdev->wiphy,
9944                                              NL80211_EXT_FEATURE_RRM)) {
9945                         kzfree(connkeys);
9946                         return -EINVAL;
9947                 }
9948                 connect.flags |= ASSOC_REQ_USE_RRM;
9949         }
9950
9951         connect.pbss = nla_get_flag(info->attrs[NL80211_ATTR_PBSS]);
9952         if (connect.pbss && !rdev->wiphy.bands[NL80211_BAND_60GHZ]) {
9953                 kzfree(connkeys);
9954                 return -EOPNOTSUPP;
9955         }
9956
9957         if (info->attrs[NL80211_ATTR_BSS_SELECT]) {
9958                 /* bss selection makes no sense if bssid is set */
9959                 if (connect.bssid) {
9960                         kzfree(connkeys);
9961                         return -EINVAL;
9962                 }
9963
9964                 err = parse_bss_select(info->attrs[NL80211_ATTR_BSS_SELECT],
9965                                        wiphy, &connect.bss_select);
9966                 if (err) {
9967                         kzfree(connkeys);
9968                         return err;
9969                 }
9970         }
9971
9972         if (wiphy_ext_feature_isset(&rdev->wiphy,
9973                                     NL80211_EXT_FEATURE_FILS_SK_OFFLOAD) &&
9974             info->attrs[NL80211_ATTR_FILS_ERP_USERNAME] &&
9975             info->attrs[NL80211_ATTR_FILS_ERP_REALM] &&
9976             info->attrs[NL80211_ATTR_FILS_ERP_NEXT_SEQ_NUM] &&
9977             info->attrs[NL80211_ATTR_FILS_ERP_RRK]) {
9978                 connect.fils_erp_username =
9979                         nla_data(info->attrs[NL80211_ATTR_FILS_ERP_USERNAME]);
9980                 connect.fils_erp_username_len =
9981                         nla_len(info->attrs[NL80211_ATTR_FILS_ERP_USERNAME]);
9982                 connect.fils_erp_realm =
9983                         nla_data(info->attrs[NL80211_ATTR_FILS_ERP_REALM]);
9984                 connect.fils_erp_realm_len =
9985                         nla_len(info->attrs[NL80211_ATTR_FILS_ERP_REALM]);
9986                 connect.fils_erp_next_seq_num =
9987                         nla_get_u16(
9988                            info->attrs[NL80211_ATTR_FILS_ERP_NEXT_SEQ_NUM]);
9989                 connect.fils_erp_rrk =
9990                         nla_data(info->attrs[NL80211_ATTR_FILS_ERP_RRK]);
9991                 connect.fils_erp_rrk_len =
9992                         nla_len(info->attrs[NL80211_ATTR_FILS_ERP_RRK]);
9993         } else if (info->attrs[NL80211_ATTR_FILS_ERP_USERNAME] ||
9994                    info->attrs[NL80211_ATTR_FILS_ERP_REALM] ||
9995                    info->attrs[NL80211_ATTR_FILS_ERP_NEXT_SEQ_NUM] ||
9996                    info->attrs[NL80211_ATTR_FILS_ERP_RRK]) {
9997                 kzfree(connkeys);
9998                 return -EINVAL;
9999         }
10000
10001         if (nla_get_flag(info->attrs[NL80211_ATTR_EXTERNAL_AUTH_SUPPORT])) {
10002                 if (!info->attrs[NL80211_ATTR_SOCKET_OWNER]) {
10003                         kzfree(connkeys);
10004                         GENL_SET_ERR_MSG(info,
10005                                          "external auth requires connection ownership");
10006                         return -EINVAL;
10007                 }
10008                 connect.flags |= CONNECT_REQ_EXTERNAL_AUTH_SUPPORT;
10009         }
10010
10011         wdev_lock(dev->ieee80211_ptr);
10012
10013         err = cfg80211_connect(rdev, dev, &connect, connkeys,
10014                                connect.prev_bssid);
10015         if (err)
10016                 kzfree(connkeys);
10017
10018         if (!err && info->attrs[NL80211_ATTR_SOCKET_OWNER]) {
10019                 dev->ieee80211_ptr->conn_owner_nlportid = info->snd_portid;
10020                 if (connect.bssid)
10021                         memcpy(dev->ieee80211_ptr->disconnect_bssid,
10022                                connect.bssid, ETH_ALEN);
10023                 else
10024                         memset(dev->ieee80211_ptr->disconnect_bssid,
10025                                0, ETH_ALEN);
10026         }
10027
10028         wdev_unlock(dev->ieee80211_ptr);
10029
10030         return err;
10031 }
10032
10033 static int nl80211_update_connect_params(struct sk_buff *skb,
10034                                          struct genl_info *info)
10035 {
10036         struct cfg80211_connect_params connect = {};
10037         struct cfg80211_registered_device *rdev = info->user_ptr[0];
10038         struct net_device *dev = info->user_ptr[1];
10039         struct wireless_dev *wdev = dev->ieee80211_ptr;
10040         bool fils_sk_offload;
10041         u32 auth_type;
10042         u32 changed = 0;
10043         int ret;
10044
10045         if (!rdev->ops->update_connect_params)
10046                 return -EOPNOTSUPP;
10047
10048         if (info->attrs[NL80211_ATTR_IE]) {
10049                 connect.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
10050                 connect.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
10051                 changed |= UPDATE_ASSOC_IES;
10052         }
10053
10054         fils_sk_offload = wiphy_ext_feature_isset(&rdev->wiphy,
10055                                                   NL80211_EXT_FEATURE_FILS_SK_OFFLOAD);
10056
10057         /*
10058          * when driver supports fils-sk offload all attributes must be
10059          * provided. So the else covers "fils-sk-not-all" and
10060          * "no-fils-sk-any".
10061          */
10062         if (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                 changed |= UPDATE_FILS_ERP_INFO;
10083         } else if (info->attrs[NL80211_ATTR_FILS_ERP_USERNAME] ||
10084                    info->attrs[NL80211_ATTR_FILS_ERP_REALM] ||
10085                    info->attrs[NL80211_ATTR_FILS_ERP_NEXT_SEQ_NUM] ||
10086                    info->attrs[NL80211_ATTR_FILS_ERP_RRK]) {
10087                 return -EINVAL;
10088         }
10089
10090         if (info->attrs[NL80211_ATTR_AUTH_TYPE]) {
10091                 auth_type = nla_get_u32(info->attrs[NL80211_ATTR_AUTH_TYPE]);
10092                 if (!nl80211_valid_auth_type(rdev, auth_type,
10093                                              NL80211_CMD_CONNECT))
10094                         return -EINVAL;
10095
10096                 if (auth_type == NL80211_AUTHTYPE_FILS_SK &&
10097                     fils_sk_offload && !(changed & UPDATE_FILS_ERP_INFO))
10098                         return -EINVAL;
10099
10100                 connect.auth_type = auth_type;
10101                 changed |= UPDATE_AUTH_TYPE;
10102         }
10103
10104         wdev_lock(dev->ieee80211_ptr);
10105         if (!wdev->current_bss)
10106                 ret = -ENOLINK;
10107         else
10108                 ret = rdev_update_connect_params(rdev, dev, &connect, changed);
10109         wdev_unlock(dev->ieee80211_ptr);
10110
10111         return ret;
10112 }
10113
10114 static int nl80211_disconnect(struct sk_buff *skb, struct genl_info *info)
10115 {
10116         struct cfg80211_registered_device *rdev = info->user_ptr[0];
10117         struct net_device *dev = info->user_ptr[1];
10118         u16 reason;
10119         int ret;
10120
10121         if (dev->ieee80211_ptr->conn_owner_nlportid &&
10122             dev->ieee80211_ptr->conn_owner_nlportid != info->snd_portid)
10123                 return -EPERM;
10124
10125         if (!info->attrs[NL80211_ATTR_REASON_CODE])
10126                 reason = WLAN_REASON_DEAUTH_LEAVING;
10127         else
10128                 reason = nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]);
10129
10130         if (reason == 0)
10131                 return -EINVAL;
10132
10133         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
10134             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
10135                 return -EOPNOTSUPP;
10136
10137         wdev_lock(dev->ieee80211_ptr);
10138         ret = cfg80211_disconnect(rdev, dev, reason, true);
10139         wdev_unlock(dev->ieee80211_ptr);
10140         return ret;
10141 }
10142
10143 static int nl80211_wiphy_netns(struct sk_buff *skb, struct genl_info *info)
10144 {
10145         struct cfg80211_registered_device *rdev = info->user_ptr[0];
10146         struct net *net;
10147         int err;
10148
10149         if (info->attrs[NL80211_ATTR_PID]) {
10150                 u32 pid = nla_get_u32(info->attrs[NL80211_ATTR_PID]);
10151
10152                 net = get_net_ns_by_pid(pid);
10153         } else if (info->attrs[NL80211_ATTR_NETNS_FD]) {
10154                 u32 fd = nla_get_u32(info->attrs[NL80211_ATTR_NETNS_FD]);
10155
10156                 net = get_net_ns_by_fd(fd);
10157         } else {
10158                 return -EINVAL;
10159         }
10160
10161         if (IS_ERR(net))
10162                 return PTR_ERR(net);
10163
10164         err = 0;
10165
10166         /* check if anything to do */
10167         if (!net_eq(wiphy_net(&rdev->wiphy), net))
10168                 err = cfg80211_switch_netns(rdev, net);
10169
10170         put_net(net);
10171         return err;
10172 }
10173
10174 static int nl80211_setdel_pmksa(struct sk_buff *skb, struct genl_info *info)
10175 {
10176         struct cfg80211_registered_device *rdev = info->user_ptr[0];
10177         int (*rdev_ops)(struct wiphy *wiphy, struct net_device *dev,
10178                         struct cfg80211_pmksa *pmksa) = NULL;
10179         struct net_device *dev = info->user_ptr[1];
10180         struct cfg80211_pmksa pmksa;
10181
10182         memset(&pmksa, 0, sizeof(struct cfg80211_pmksa));
10183
10184         if (!info->attrs[NL80211_ATTR_PMKID])
10185                 return -EINVAL;
10186
10187         pmksa.pmkid = nla_data(info->attrs[NL80211_ATTR_PMKID]);
10188
10189         if (info->attrs[NL80211_ATTR_MAC]) {
10190                 pmksa.bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
10191         } else if (info->attrs[NL80211_ATTR_SSID] &&
10192                    info->attrs[NL80211_ATTR_FILS_CACHE_ID] &&
10193                    (info->genlhdr->cmd == NL80211_CMD_DEL_PMKSA ||
10194                     info->attrs[NL80211_ATTR_PMK])) {
10195                 pmksa.ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
10196                 pmksa.ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
10197                 pmksa.cache_id =
10198                         nla_data(info->attrs[NL80211_ATTR_FILS_CACHE_ID]);
10199         } else {
10200                 return -EINVAL;
10201         }
10202         if (info->attrs[NL80211_ATTR_PMK]) {
10203                 pmksa.pmk = nla_data(info->attrs[NL80211_ATTR_PMK]);
10204                 pmksa.pmk_len = nla_len(info->attrs[NL80211_ATTR_PMK]);
10205         }
10206
10207         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
10208             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT &&
10209             !(dev->ieee80211_ptr->iftype == NL80211_IFTYPE_AP &&
10210               wiphy_ext_feature_isset(&rdev->wiphy,
10211                                       NL80211_EXT_FEATURE_AP_PMKSA_CACHING)))
10212                 return -EOPNOTSUPP;
10213
10214         switch (info->genlhdr->cmd) {
10215         case NL80211_CMD_SET_PMKSA:
10216                 rdev_ops = rdev->ops->set_pmksa;
10217                 break;
10218         case NL80211_CMD_DEL_PMKSA:
10219                 rdev_ops = rdev->ops->del_pmksa;
10220                 break;
10221         default:
10222                 WARN_ON(1);
10223                 break;
10224         }
10225
10226         if (!rdev_ops)
10227                 return -EOPNOTSUPP;
10228
10229         return rdev_ops(&rdev->wiphy, dev, &pmksa);
10230 }
10231
10232 static int nl80211_flush_pmksa(struct sk_buff *skb, struct genl_info *info)
10233 {
10234         struct cfg80211_registered_device *rdev = info->user_ptr[0];
10235         struct net_device *dev = info->user_ptr[1];
10236
10237         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
10238             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
10239                 return -EOPNOTSUPP;
10240
10241         if (!rdev->ops->flush_pmksa)
10242                 return -EOPNOTSUPP;
10243
10244         return rdev_flush_pmksa(rdev, dev);
10245 }
10246
10247 static int nl80211_tdls_mgmt(struct sk_buff *skb, struct genl_info *info)
10248 {
10249         struct cfg80211_registered_device *rdev = info->user_ptr[0];
10250         struct net_device *dev = info->user_ptr[1];
10251         u8 action_code, dialog_token;
10252         u32 peer_capability = 0;
10253         u16 status_code;
10254         u8 *peer;
10255         bool initiator;
10256
10257         if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS) ||
10258             !rdev->ops->tdls_mgmt)
10259                 return -EOPNOTSUPP;
10260
10261         if (!info->attrs[NL80211_ATTR_TDLS_ACTION] ||
10262             !info->attrs[NL80211_ATTR_STATUS_CODE] ||
10263             !info->attrs[NL80211_ATTR_TDLS_DIALOG_TOKEN] ||
10264             !info->attrs[NL80211_ATTR_IE] ||
10265             !info->attrs[NL80211_ATTR_MAC])
10266                 return -EINVAL;
10267
10268         peer = nla_data(info->attrs[NL80211_ATTR_MAC]);
10269         action_code = nla_get_u8(info->attrs[NL80211_ATTR_TDLS_ACTION]);
10270         status_code = nla_get_u16(info->attrs[NL80211_ATTR_STATUS_CODE]);
10271         dialog_token = nla_get_u8(info->attrs[NL80211_ATTR_TDLS_DIALOG_TOKEN]);
10272         initiator = nla_get_flag(info->attrs[NL80211_ATTR_TDLS_INITIATOR]);
10273         if (info->attrs[NL80211_ATTR_TDLS_PEER_CAPABILITY])
10274                 peer_capability =
10275                         nla_get_u32(info->attrs[NL80211_ATTR_TDLS_PEER_CAPABILITY]);
10276
10277         return rdev_tdls_mgmt(rdev, dev, peer, action_code,
10278                               dialog_token, status_code, peer_capability,
10279                               initiator,
10280                               nla_data(info->attrs[NL80211_ATTR_IE]),
10281                               nla_len(info->attrs[NL80211_ATTR_IE]));
10282 }
10283
10284 static int nl80211_tdls_oper(struct sk_buff *skb, struct genl_info *info)
10285 {
10286         struct cfg80211_registered_device *rdev = info->user_ptr[0];
10287         struct net_device *dev = info->user_ptr[1];
10288         enum nl80211_tdls_operation operation;
10289         u8 *peer;
10290
10291         if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS) ||
10292             !rdev->ops->tdls_oper)
10293                 return -EOPNOTSUPP;
10294
10295         if (!info->attrs[NL80211_ATTR_TDLS_OPERATION] ||
10296             !info->attrs[NL80211_ATTR_MAC])
10297                 return -EINVAL;
10298
10299         operation = nla_get_u8(info->attrs[NL80211_ATTR_TDLS_OPERATION]);
10300         peer = nla_data(info->attrs[NL80211_ATTR_MAC]);
10301
10302         return rdev_tdls_oper(rdev, dev, peer, operation);
10303 }
10304
10305 static int nl80211_remain_on_channel(struct sk_buff *skb,
10306                                      struct genl_info *info)
10307 {
10308         struct cfg80211_registered_device *rdev = info->user_ptr[0];
10309         struct wireless_dev *wdev = info->user_ptr[1];
10310         struct cfg80211_chan_def chandef;
10311         const struct cfg80211_chan_def *compat_chandef;
10312         struct sk_buff *msg;
10313         void *hdr;
10314         u64 cookie;
10315         u32 duration;
10316         int err;
10317
10318         if (!info->attrs[NL80211_ATTR_WIPHY_FREQ] ||
10319             !info->attrs[NL80211_ATTR_DURATION])
10320                 return -EINVAL;
10321
10322         duration = nla_get_u32(info->attrs[NL80211_ATTR_DURATION]);
10323
10324         if (!rdev->ops->remain_on_channel ||
10325             !(rdev->wiphy.flags & WIPHY_FLAG_HAS_REMAIN_ON_CHANNEL))
10326                 return -EOPNOTSUPP;
10327
10328         /*
10329          * We should be on that channel for at least a minimum amount of
10330          * time (10ms) but no longer than the driver supports.
10331          */
10332         if (duration < NL80211_MIN_REMAIN_ON_CHANNEL_TIME ||
10333             duration > rdev->wiphy.max_remain_on_channel_duration)
10334                 return -EINVAL;
10335
10336         err = nl80211_parse_chandef(rdev, info, &chandef);
10337         if (err)
10338                 return err;
10339
10340         wdev_lock(wdev);
10341         if (!cfg80211_off_channel_oper_allowed(wdev) &&
10342             !cfg80211_chandef_identical(&wdev->chandef, &chandef)) {
10343                 compat_chandef = cfg80211_chandef_compatible(&wdev->chandef,
10344                                                              &chandef);
10345                 if (compat_chandef != &chandef) {
10346                         wdev_unlock(wdev);
10347                         return -EBUSY;
10348                 }
10349         }
10350         wdev_unlock(wdev);
10351
10352         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
10353         if (!msg)
10354                 return -ENOMEM;
10355
10356         hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
10357                              NL80211_CMD_REMAIN_ON_CHANNEL);
10358         if (!hdr) {
10359                 err = -ENOBUFS;
10360                 goto free_msg;
10361         }
10362
10363         err = rdev_remain_on_channel(rdev, wdev, chandef.chan,
10364                                      duration, &cookie);
10365
10366         if (err)
10367                 goto free_msg;
10368
10369         if (nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, cookie,
10370                               NL80211_ATTR_PAD))
10371                 goto nla_put_failure;
10372
10373         genlmsg_end(msg, hdr);
10374
10375         return genlmsg_reply(msg, info);
10376
10377  nla_put_failure:
10378         err = -ENOBUFS;
10379  free_msg:
10380         nlmsg_free(msg);
10381         return err;
10382 }
10383
10384 static int nl80211_cancel_remain_on_channel(struct sk_buff *skb,
10385                                             struct genl_info *info)
10386 {
10387         struct cfg80211_registered_device *rdev = info->user_ptr[0];
10388         struct wireless_dev *wdev = info->user_ptr[1];
10389         u64 cookie;
10390
10391         if (!info->attrs[NL80211_ATTR_COOKIE])
10392                 return -EINVAL;
10393
10394         if (!rdev->ops->cancel_remain_on_channel)
10395                 return -EOPNOTSUPP;
10396
10397         cookie = nla_get_u64(info->attrs[NL80211_ATTR_COOKIE]);
10398
10399         return rdev_cancel_remain_on_channel(rdev, wdev, cookie);
10400 }
10401
10402 static int nl80211_set_tx_bitrate_mask(struct sk_buff *skb,
10403                                        struct genl_info *info)
10404 {
10405         struct cfg80211_bitrate_mask mask;
10406         struct cfg80211_registered_device *rdev = info->user_ptr[0];
10407         struct net_device *dev = info->user_ptr[1];
10408         int err;
10409
10410         if (!rdev->ops->set_bitrate_mask)
10411                 return -EOPNOTSUPP;
10412
10413         err = nl80211_parse_tx_bitrate_mask(info, &mask);
10414         if (err)
10415                 return err;
10416
10417         return rdev_set_bitrate_mask(rdev, dev, NULL, &mask);
10418 }
10419
10420 static int nl80211_register_mgmt(struct sk_buff *skb, struct genl_info *info)
10421 {
10422         struct cfg80211_registered_device *rdev = info->user_ptr[0];
10423         struct wireless_dev *wdev = info->user_ptr[1];
10424         u16 frame_type = IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_ACTION;
10425
10426         if (!info->attrs[NL80211_ATTR_FRAME_MATCH])
10427                 return -EINVAL;
10428
10429         if (info->attrs[NL80211_ATTR_FRAME_TYPE])
10430                 frame_type = nla_get_u16(info->attrs[NL80211_ATTR_FRAME_TYPE]);
10431
10432         switch (wdev->iftype) {
10433         case NL80211_IFTYPE_STATION:
10434         case NL80211_IFTYPE_ADHOC:
10435         case NL80211_IFTYPE_P2P_CLIENT:
10436         case NL80211_IFTYPE_AP:
10437         case NL80211_IFTYPE_AP_VLAN:
10438         case NL80211_IFTYPE_MESH_POINT:
10439         case NL80211_IFTYPE_P2P_GO:
10440         case NL80211_IFTYPE_P2P_DEVICE:
10441                 break;
10442         case NL80211_IFTYPE_NAN:
10443         default:
10444                 return -EOPNOTSUPP;
10445         }
10446
10447         /* not much point in registering if we can't reply */
10448         if (!rdev->ops->mgmt_tx)
10449                 return -EOPNOTSUPP;
10450
10451         return cfg80211_mlme_register_mgmt(wdev, info->snd_portid, frame_type,
10452                         nla_data(info->attrs[NL80211_ATTR_FRAME_MATCH]),
10453                         nla_len(info->attrs[NL80211_ATTR_FRAME_MATCH]));
10454 }
10455
10456 static int nl80211_tx_mgmt(struct sk_buff *skb, struct genl_info *info)
10457 {
10458         struct cfg80211_registered_device *rdev = info->user_ptr[0];
10459         struct wireless_dev *wdev = info->user_ptr[1];
10460         struct cfg80211_chan_def chandef;
10461         int err;
10462         void *hdr = NULL;
10463         u64 cookie;
10464         struct sk_buff *msg = NULL;
10465         struct cfg80211_mgmt_tx_params params = {
10466                 .dont_wait_for_ack =
10467                         info->attrs[NL80211_ATTR_DONT_WAIT_FOR_ACK],
10468         };
10469
10470         if (!info->attrs[NL80211_ATTR_FRAME])
10471                 return -EINVAL;
10472
10473         if (!rdev->ops->mgmt_tx)
10474                 return -EOPNOTSUPP;
10475
10476         switch (wdev->iftype) {
10477         case NL80211_IFTYPE_P2P_DEVICE:
10478                 if (!info->attrs[NL80211_ATTR_WIPHY_FREQ])
10479                         return -EINVAL;
10480         case NL80211_IFTYPE_STATION:
10481         case NL80211_IFTYPE_ADHOC:
10482         case NL80211_IFTYPE_P2P_CLIENT:
10483         case NL80211_IFTYPE_AP:
10484         case NL80211_IFTYPE_AP_VLAN:
10485         case NL80211_IFTYPE_MESH_POINT:
10486         case NL80211_IFTYPE_P2P_GO:
10487                 break;
10488         case NL80211_IFTYPE_NAN:
10489         default:
10490                 return -EOPNOTSUPP;
10491         }
10492
10493         if (info->attrs[NL80211_ATTR_DURATION]) {
10494                 if (!(rdev->wiphy.flags & WIPHY_FLAG_OFFCHAN_TX))
10495                         return -EINVAL;
10496                 params.wait = nla_get_u32(info->attrs[NL80211_ATTR_DURATION]);
10497
10498                 /*
10499                  * We should wait on the channel for at least a minimum amount
10500                  * of time (10ms) but no longer than the driver supports.
10501                  */
10502                 if (params.wait < NL80211_MIN_REMAIN_ON_CHANNEL_TIME ||
10503                     params.wait > rdev->wiphy.max_remain_on_channel_duration)
10504                         return -EINVAL;
10505         }
10506
10507         params.offchan = info->attrs[NL80211_ATTR_OFFCHANNEL_TX_OK];
10508
10509         if (params.offchan && !(rdev->wiphy.flags & WIPHY_FLAG_OFFCHAN_TX))
10510                 return -EINVAL;
10511
10512         params.no_cck = nla_get_flag(info->attrs[NL80211_ATTR_TX_NO_CCK_RATE]);
10513
10514         /* get the channel if any has been specified, otherwise pass NULL to
10515          * the driver. The latter will use the current one
10516          */
10517         chandef.chan = NULL;
10518         if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
10519                 err = nl80211_parse_chandef(rdev, info, &chandef);
10520                 if (err)
10521                         return err;
10522         }
10523
10524         if (!chandef.chan && params.offchan)
10525                 return -EINVAL;
10526
10527         wdev_lock(wdev);
10528         if (params.offchan && !cfg80211_off_channel_oper_allowed(wdev)) {
10529                 wdev_unlock(wdev);
10530                 return -EBUSY;
10531         }
10532         wdev_unlock(wdev);
10533
10534         params.buf = nla_data(info->attrs[NL80211_ATTR_FRAME]);
10535         params.len = nla_len(info->attrs[NL80211_ATTR_FRAME]);
10536
10537         if (info->attrs[NL80211_ATTR_CSA_C_OFFSETS_TX]) {
10538                 int len = nla_len(info->attrs[NL80211_ATTR_CSA_C_OFFSETS_TX]);
10539                 int i;
10540
10541                 if (len % sizeof(u16))
10542                         return -EINVAL;
10543
10544                 params.n_csa_offsets = len / sizeof(u16);
10545                 params.csa_offsets =
10546                         nla_data(info->attrs[NL80211_ATTR_CSA_C_OFFSETS_TX]);
10547
10548                 /* check that all the offsets fit the frame */
10549                 for (i = 0; i < params.n_csa_offsets; i++) {
10550                         if (params.csa_offsets[i] >= params.len)
10551                                 return -EINVAL;
10552                 }
10553         }
10554
10555         if (!params.dont_wait_for_ack) {
10556                 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
10557                 if (!msg)
10558                         return -ENOMEM;
10559
10560                 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
10561                                      NL80211_CMD_FRAME);
10562                 if (!hdr) {
10563                         err = -ENOBUFS;
10564                         goto free_msg;
10565                 }
10566         }
10567
10568         params.chan = chandef.chan;
10569         err = cfg80211_mlme_mgmt_tx(rdev, wdev, &params, &cookie);
10570         if (err)
10571                 goto free_msg;
10572
10573         if (msg) {
10574                 if (nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, cookie,
10575                                       NL80211_ATTR_PAD))
10576                         goto nla_put_failure;
10577
10578                 genlmsg_end(msg, hdr);
10579                 return genlmsg_reply(msg, info);
10580         }
10581
10582         return 0;
10583
10584  nla_put_failure:
10585         err = -ENOBUFS;
10586  free_msg:
10587         nlmsg_free(msg);
10588         return err;
10589 }
10590
10591 static int nl80211_tx_mgmt_cancel_wait(struct sk_buff *skb, struct genl_info *info)
10592 {
10593         struct cfg80211_registered_device *rdev = info->user_ptr[0];
10594         struct wireless_dev *wdev = info->user_ptr[1];
10595         u64 cookie;
10596
10597         if (!info->attrs[NL80211_ATTR_COOKIE])
10598                 return -EINVAL;
10599
10600         if (!rdev->ops->mgmt_tx_cancel_wait)
10601                 return -EOPNOTSUPP;
10602
10603         switch (wdev->iftype) {
10604         case NL80211_IFTYPE_STATION:
10605         case NL80211_IFTYPE_ADHOC:
10606         case NL80211_IFTYPE_P2P_CLIENT:
10607         case NL80211_IFTYPE_AP:
10608         case NL80211_IFTYPE_AP_VLAN:
10609         case NL80211_IFTYPE_P2P_GO:
10610         case NL80211_IFTYPE_P2P_DEVICE:
10611                 break;
10612         case NL80211_IFTYPE_NAN:
10613         default:
10614                 return -EOPNOTSUPP;
10615         }
10616
10617         cookie = nla_get_u64(info->attrs[NL80211_ATTR_COOKIE]);
10618
10619         return rdev_mgmt_tx_cancel_wait(rdev, wdev, cookie);
10620 }
10621
10622 static int nl80211_set_power_save(struct sk_buff *skb, struct genl_info *info)
10623 {
10624         struct cfg80211_registered_device *rdev = info->user_ptr[0];
10625         struct wireless_dev *wdev;
10626         struct net_device *dev = info->user_ptr[1];
10627         u8 ps_state;
10628         bool state;
10629         int err;
10630
10631         if (!info->attrs[NL80211_ATTR_PS_STATE])
10632                 return -EINVAL;
10633
10634         ps_state = nla_get_u32(info->attrs[NL80211_ATTR_PS_STATE]);
10635
10636         wdev = dev->ieee80211_ptr;
10637
10638         if (!rdev->ops->set_power_mgmt)
10639                 return -EOPNOTSUPP;
10640
10641         state = (ps_state == NL80211_PS_ENABLED) ? true : false;
10642
10643         if (state == wdev->ps)
10644                 return 0;
10645
10646         err = rdev_set_power_mgmt(rdev, dev, state, wdev->ps_timeout);
10647         if (!err)
10648                 wdev->ps = state;
10649         return err;
10650 }
10651
10652 static int nl80211_get_power_save(struct sk_buff *skb, struct genl_info *info)
10653 {
10654         struct cfg80211_registered_device *rdev = info->user_ptr[0];
10655         enum nl80211_ps_state ps_state;
10656         struct wireless_dev *wdev;
10657         struct net_device *dev = info->user_ptr[1];
10658         struct sk_buff *msg;
10659         void *hdr;
10660         int err;
10661
10662         wdev = dev->ieee80211_ptr;
10663
10664         if (!rdev->ops->set_power_mgmt)
10665                 return -EOPNOTSUPP;
10666
10667         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
10668         if (!msg)
10669                 return -ENOMEM;
10670
10671         hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
10672                              NL80211_CMD_GET_POWER_SAVE);
10673         if (!hdr) {
10674                 err = -ENOBUFS;
10675                 goto free_msg;
10676         }
10677
10678         if (wdev->ps)
10679                 ps_state = NL80211_PS_ENABLED;
10680         else
10681                 ps_state = NL80211_PS_DISABLED;
10682
10683         if (nla_put_u32(msg, NL80211_ATTR_PS_STATE, ps_state))
10684                 goto nla_put_failure;
10685
10686         genlmsg_end(msg, hdr);
10687         return genlmsg_reply(msg, info);
10688
10689  nla_put_failure:
10690         err = -ENOBUFS;
10691  free_msg:
10692         nlmsg_free(msg);
10693         return err;
10694 }
10695
10696 static const struct nla_policy
10697 nl80211_attr_cqm_policy[NL80211_ATTR_CQM_MAX + 1] = {
10698         [NL80211_ATTR_CQM_RSSI_THOLD] = { .type = NLA_BINARY },
10699         [NL80211_ATTR_CQM_RSSI_HYST] = { .type = NLA_U32 },
10700         [NL80211_ATTR_CQM_RSSI_THRESHOLD_EVENT] = { .type = NLA_U32 },
10701         [NL80211_ATTR_CQM_TXE_RATE] = { .type = NLA_U32 },
10702         [NL80211_ATTR_CQM_TXE_PKTS] = { .type = NLA_U32 },
10703         [NL80211_ATTR_CQM_TXE_INTVL] = { .type = NLA_U32 },
10704         [NL80211_ATTR_CQM_RSSI_LEVEL] = { .type = NLA_S32 },
10705 };
10706
10707 static int nl80211_set_cqm_txe(struct genl_info *info,
10708                                u32 rate, u32 pkts, u32 intvl)
10709 {
10710         struct cfg80211_registered_device *rdev = info->user_ptr[0];
10711         struct net_device *dev = info->user_ptr[1];
10712         struct wireless_dev *wdev = dev->ieee80211_ptr;
10713
10714         if (rate > 100 || intvl > NL80211_CQM_TXE_MAX_INTVL)
10715                 return -EINVAL;
10716
10717         if (!rdev->ops->set_cqm_txe_config)
10718                 return -EOPNOTSUPP;
10719
10720         if (wdev->iftype != NL80211_IFTYPE_STATION &&
10721             wdev->iftype != NL80211_IFTYPE_P2P_CLIENT)
10722                 return -EOPNOTSUPP;
10723
10724         return rdev_set_cqm_txe_config(rdev, dev, rate, pkts, intvl);
10725 }
10726
10727 static int cfg80211_cqm_rssi_update(struct cfg80211_registered_device *rdev,
10728                                     struct net_device *dev)
10729 {
10730         struct wireless_dev *wdev = dev->ieee80211_ptr;
10731         s32 last, low, high;
10732         u32 hyst;
10733         int i, n, low_index;
10734         int err;
10735
10736         /* RSSI reporting disabled? */
10737         if (!wdev->cqm_config)
10738                 return rdev_set_cqm_rssi_range_config(rdev, dev, 0, 0);
10739
10740         /*
10741          * Obtain current RSSI value if possible, if not and no RSSI threshold
10742          * event has been received yet, we should receive an event after a
10743          * connection is established and enough beacons received to calculate
10744          * the average.
10745          */
10746         if (!wdev->cqm_config->last_rssi_event_value && wdev->current_bss &&
10747             rdev->ops->get_station) {
10748                 struct station_info sinfo = {};
10749                 u8 *mac_addr;
10750
10751                 mac_addr = wdev->current_bss->pub.bssid;
10752
10753                 err = rdev_get_station(rdev, dev, mac_addr, &sinfo);
10754                 if (err)
10755                         return err;
10756
10757                 if (sinfo.filled & BIT_ULL(NL80211_STA_INFO_BEACON_SIGNAL_AVG))
10758                         wdev->cqm_config->last_rssi_event_value =
10759                                 (s8) sinfo.rx_beacon_signal_avg;
10760         }
10761
10762         last = wdev->cqm_config->last_rssi_event_value;
10763         hyst = wdev->cqm_config->rssi_hyst;
10764         n = wdev->cqm_config->n_rssi_thresholds;
10765
10766         for (i = 0; i < n; i++)
10767                 if (last < wdev->cqm_config->rssi_thresholds[i])
10768                         break;
10769
10770         low_index = i - 1;
10771         if (low_index >= 0) {
10772                 low_index = array_index_nospec(low_index, n);
10773                 low = wdev->cqm_config->rssi_thresholds[low_index] - hyst;
10774         } else {
10775                 low = S32_MIN;
10776         }
10777         if (i < n) {
10778                 i = array_index_nospec(i, n);
10779                 high = wdev->cqm_config->rssi_thresholds[i] + hyst - 1;
10780         } else {
10781                 high = S32_MAX;
10782         }
10783
10784         return rdev_set_cqm_rssi_range_config(rdev, dev, low, high);
10785 }
10786
10787 static int nl80211_set_cqm_rssi(struct genl_info *info,
10788                                 const s32 *thresholds, int n_thresholds,
10789                                 u32 hysteresis)
10790 {
10791         struct cfg80211_registered_device *rdev = info->user_ptr[0];
10792         struct net_device *dev = info->user_ptr[1];
10793         struct wireless_dev *wdev = dev->ieee80211_ptr;
10794         int i, err;
10795         s32 prev = S32_MIN;
10796
10797         /* Check all values negative and sorted */
10798         for (i = 0; i < n_thresholds; i++) {
10799                 if (thresholds[i] > 0 || thresholds[i] <= prev)
10800                         return -EINVAL;
10801
10802                 prev = thresholds[i];
10803         }
10804
10805         if (wdev->iftype != NL80211_IFTYPE_STATION &&
10806             wdev->iftype != NL80211_IFTYPE_P2P_CLIENT)
10807                 return -EOPNOTSUPP;
10808
10809         wdev_lock(wdev);
10810         cfg80211_cqm_config_free(wdev);
10811         wdev_unlock(wdev);
10812
10813         if (n_thresholds <= 1 && rdev->ops->set_cqm_rssi_config) {
10814                 if (n_thresholds == 0 || thresholds[0] == 0) /* Disabling */
10815                         return rdev_set_cqm_rssi_config(rdev, dev, 0, 0);
10816
10817                 return rdev_set_cqm_rssi_config(rdev, dev,
10818                                                 thresholds[0], hysteresis);
10819         }
10820
10821         if (!wiphy_ext_feature_isset(&rdev->wiphy,
10822                                      NL80211_EXT_FEATURE_CQM_RSSI_LIST))
10823                 return -EOPNOTSUPP;
10824
10825         if (n_thresholds == 1 && thresholds[0] == 0) /* Disabling */
10826                 n_thresholds = 0;
10827
10828         wdev_lock(wdev);
10829         if (n_thresholds) {
10830                 struct cfg80211_cqm_config *cqm_config;
10831
10832                 cqm_config = kzalloc(sizeof(struct cfg80211_cqm_config) +
10833                                      n_thresholds * sizeof(s32), GFP_KERNEL);
10834                 if (!cqm_config) {
10835                         err = -ENOMEM;
10836                         goto unlock;
10837                 }
10838
10839                 cqm_config->rssi_hyst = hysteresis;
10840                 cqm_config->n_rssi_thresholds = n_thresholds;
10841                 memcpy(cqm_config->rssi_thresholds, thresholds,
10842                        n_thresholds * sizeof(s32));
10843
10844                 wdev->cqm_config = cqm_config;
10845         }
10846
10847         err = cfg80211_cqm_rssi_update(rdev, dev);
10848
10849 unlock:
10850         wdev_unlock(wdev);
10851
10852         return err;
10853 }
10854
10855 static int nl80211_set_cqm(struct sk_buff *skb, struct genl_info *info)
10856 {
10857         struct nlattr *attrs[NL80211_ATTR_CQM_MAX + 1];
10858         struct nlattr *cqm;
10859         int err;
10860
10861         cqm = info->attrs[NL80211_ATTR_CQM];
10862         if (!cqm)
10863                 return -EINVAL;
10864
10865         err = nla_parse_nested_deprecated(attrs, NL80211_ATTR_CQM_MAX, cqm,
10866                                           nl80211_attr_cqm_policy,
10867                                           info->extack);
10868         if (err)
10869                 return err;
10870
10871         if (attrs[NL80211_ATTR_CQM_RSSI_THOLD] &&
10872             attrs[NL80211_ATTR_CQM_RSSI_HYST]) {
10873                 const s32 *thresholds =
10874                         nla_data(attrs[NL80211_ATTR_CQM_RSSI_THOLD]);
10875                 int len = nla_len(attrs[NL80211_ATTR_CQM_RSSI_THOLD]);
10876                 u32 hysteresis = nla_get_u32(attrs[NL80211_ATTR_CQM_RSSI_HYST]);
10877
10878                 if (len % 4)
10879                         return -EINVAL;
10880
10881                 return nl80211_set_cqm_rssi(info, thresholds, len / 4,
10882                                             hysteresis);
10883         }
10884
10885         if (attrs[NL80211_ATTR_CQM_TXE_RATE] &&
10886             attrs[NL80211_ATTR_CQM_TXE_PKTS] &&
10887             attrs[NL80211_ATTR_CQM_TXE_INTVL]) {
10888                 u32 rate = nla_get_u32(attrs[NL80211_ATTR_CQM_TXE_RATE]);
10889                 u32 pkts = nla_get_u32(attrs[NL80211_ATTR_CQM_TXE_PKTS]);
10890                 u32 intvl = nla_get_u32(attrs[NL80211_ATTR_CQM_TXE_INTVL]);
10891
10892                 return nl80211_set_cqm_txe(info, rate, pkts, intvl);
10893         }
10894
10895         return -EINVAL;
10896 }
10897
10898 static int nl80211_join_ocb(struct sk_buff *skb, struct genl_info *info)
10899 {
10900         struct cfg80211_registered_device *rdev = info->user_ptr[0];
10901         struct net_device *dev = info->user_ptr[1];
10902         struct ocb_setup setup = {};
10903         int err;
10904
10905         err = nl80211_parse_chandef(rdev, info, &setup.chandef);
10906         if (err)
10907                 return err;
10908
10909         return cfg80211_join_ocb(rdev, dev, &setup);
10910 }
10911
10912 static int nl80211_leave_ocb(struct sk_buff *skb, struct genl_info *info)
10913 {
10914         struct cfg80211_registered_device *rdev = info->user_ptr[0];
10915         struct net_device *dev = info->user_ptr[1];
10916
10917         return cfg80211_leave_ocb(rdev, dev);
10918 }
10919
10920 static int nl80211_join_mesh(struct sk_buff *skb, struct genl_info *info)
10921 {
10922         struct cfg80211_registered_device *rdev = info->user_ptr[0];
10923         struct net_device *dev = info->user_ptr[1];
10924         struct mesh_config cfg;
10925         struct mesh_setup setup;
10926         int err;
10927
10928         /* start with default */
10929         memcpy(&cfg, &default_mesh_config, sizeof(cfg));
10930         memcpy(&setup, &default_mesh_setup, sizeof(setup));
10931
10932         if (info->attrs[NL80211_ATTR_MESH_CONFIG]) {
10933                 /* and parse parameters if given */
10934                 err = nl80211_parse_mesh_config(info, &cfg, NULL);
10935                 if (err)
10936                         return err;
10937         }
10938
10939         if (!info->attrs[NL80211_ATTR_MESH_ID] ||
10940             !nla_len(info->attrs[NL80211_ATTR_MESH_ID]))
10941                 return -EINVAL;
10942
10943         setup.mesh_id = nla_data(info->attrs[NL80211_ATTR_MESH_ID]);
10944         setup.mesh_id_len = nla_len(info->attrs[NL80211_ATTR_MESH_ID]);
10945
10946         if (info->attrs[NL80211_ATTR_MCAST_RATE] &&
10947             !nl80211_parse_mcast_rate(rdev, setup.mcast_rate,
10948                             nla_get_u32(info->attrs[NL80211_ATTR_MCAST_RATE])))
10949                         return -EINVAL;
10950
10951         if (info->attrs[NL80211_ATTR_BEACON_INTERVAL]) {
10952                 setup.beacon_interval =
10953                         nla_get_u32(info->attrs[NL80211_ATTR_BEACON_INTERVAL]);
10954
10955                 err = cfg80211_validate_beacon_int(rdev,
10956                                                    NL80211_IFTYPE_MESH_POINT,
10957                                                    setup.beacon_interval);
10958                 if (err)
10959                         return err;
10960         }
10961
10962         if (info->attrs[NL80211_ATTR_DTIM_PERIOD]) {
10963                 setup.dtim_period =
10964                         nla_get_u32(info->attrs[NL80211_ATTR_DTIM_PERIOD]);
10965                 if (setup.dtim_period < 1 || setup.dtim_period > 100)
10966                         return -EINVAL;
10967         }
10968
10969         if (info->attrs[NL80211_ATTR_MESH_SETUP]) {
10970                 /* parse additional setup parameters if given */
10971                 err = nl80211_parse_mesh_setup(info, &setup);
10972                 if (err)
10973                         return err;
10974         }
10975
10976         if (setup.user_mpm)
10977                 cfg.auto_open_plinks = false;
10978
10979         if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
10980                 err = nl80211_parse_chandef(rdev, info, &setup.chandef);
10981                 if (err)
10982                         return err;
10983         } else {
10984                 /* __cfg80211_join_mesh() will sort it out */
10985                 setup.chandef.chan = NULL;
10986         }
10987
10988         if (info->attrs[NL80211_ATTR_BSS_BASIC_RATES]) {
10989                 u8 *rates = nla_data(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
10990                 int n_rates =
10991                         nla_len(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
10992                 struct ieee80211_supported_band *sband;
10993
10994                 if (!setup.chandef.chan)
10995                         return -EINVAL;
10996
10997                 sband = rdev->wiphy.bands[setup.chandef.chan->band];
10998
10999                 err = ieee80211_get_ratemask(sband, rates, n_rates,
11000                                              &setup.basic_rates);
11001                 if (err)
11002                         return err;
11003         }
11004
11005         if (info->attrs[NL80211_ATTR_TX_RATES]) {
11006                 err = nl80211_parse_tx_bitrate_mask(info, &setup.beacon_rate);
11007                 if (err)
11008                         return err;
11009
11010                 if (!setup.chandef.chan)
11011                         return -EINVAL;
11012
11013                 err = validate_beacon_tx_rate(rdev, setup.chandef.chan->band,
11014                                               &setup.beacon_rate);
11015                 if (err)
11016                         return err;
11017         }
11018
11019         setup.userspace_handles_dfs =
11020                 nla_get_flag(info->attrs[NL80211_ATTR_HANDLE_DFS]);
11021
11022         if (info->attrs[NL80211_ATTR_CONTROL_PORT_OVER_NL80211]) {
11023                 int r = validate_pae_over_nl80211(rdev, info);
11024
11025                 if (r < 0)
11026                         return r;
11027
11028                 setup.control_port_over_nl80211 = true;
11029         }
11030
11031         wdev_lock(dev->ieee80211_ptr);
11032         err = __cfg80211_join_mesh(rdev, dev, &setup, &cfg);
11033         if (!err && info->attrs[NL80211_ATTR_SOCKET_OWNER])
11034                 dev->ieee80211_ptr->conn_owner_nlportid = info->snd_portid;
11035         wdev_unlock(dev->ieee80211_ptr);
11036
11037         return err;
11038 }
11039
11040 static int nl80211_leave_mesh(struct sk_buff *skb, struct genl_info *info)
11041 {
11042         struct cfg80211_registered_device *rdev = info->user_ptr[0];
11043         struct net_device *dev = info->user_ptr[1];
11044
11045         return cfg80211_leave_mesh(rdev, dev);
11046 }
11047
11048 #ifdef CONFIG_PM
11049 static int nl80211_send_wowlan_patterns(struct sk_buff *msg,
11050                                         struct cfg80211_registered_device *rdev)
11051 {
11052         struct cfg80211_wowlan *wowlan = rdev->wiphy.wowlan_config;
11053         struct nlattr *nl_pats, *nl_pat;
11054         int i, pat_len;
11055
11056         if (!wowlan->n_patterns)
11057                 return 0;
11058
11059         nl_pats = nla_nest_start_noflag(msg, NL80211_WOWLAN_TRIG_PKT_PATTERN);
11060         if (!nl_pats)
11061                 return -ENOBUFS;
11062
11063         for (i = 0; i < wowlan->n_patterns; i++) {
11064                 nl_pat = nla_nest_start_noflag(msg, i + 1);
11065                 if (!nl_pat)
11066                         return -ENOBUFS;
11067                 pat_len = wowlan->patterns[i].pattern_len;
11068                 if (nla_put(msg, NL80211_PKTPAT_MASK, DIV_ROUND_UP(pat_len, 8),
11069                             wowlan->patterns[i].mask) ||
11070                     nla_put(msg, NL80211_PKTPAT_PATTERN, pat_len,
11071                             wowlan->patterns[i].pattern) ||
11072                     nla_put_u32(msg, NL80211_PKTPAT_OFFSET,
11073                                 wowlan->patterns[i].pkt_offset))
11074                         return -ENOBUFS;
11075                 nla_nest_end(msg, nl_pat);
11076         }
11077         nla_nest_end(msg, nl_pats);
11078
11079         return 0;
11080 }
11081
11082 static int nl80211_send_wowlan_tcp(struct sk_buff *msg,
11083                                    struct cfg80211_wowlan_tcp *tcp)
11084 {
11085         struct nlattr *nl_tcp;
11086
11087         if (!tcp)
11088                 return 0;
11089
11090         nl_tcp = nla_nest_start_noflag(msg,
11091                                        NL80211_WOWLAN_TRIG_TCP_CONNECTION);
11092         if (!nl_tcp)
11093                 return -ENOBUFS;
11094
11095         if (nla_put_in_addr(msg, NL80211_WOWLAN_TCP_SRC_IPV4, tcp->src) ||
11096             nla_put_in_addr(msg, NL80211_WOWLAN_TCP_DST_IPV4, tcp->dst) ||
11097             nla_put(msg, NL80211_WOWLAN_TCP_DST_MAC, ETH_ALEN, tcp->dst_mac) ||
11098             nla_put_u16(msg, NL80211_WOWLAN_TCP_SRC_PORT, tcp->src_port) ||
11099             nla_put_u16(msg, NL80211_WOWLAN_TCP_DST_PORT, tcp->dst_port) ||
11100             nla_put(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD,
11101                     tcp->payload_len, tcp->payload) ||
11102             nla_put_u32(msg, NL80211_WOWLAN_TCP_DATA_INTERVAL,
11103                         tcp->data_interval) ||
11104             nla_put(msg, NL80211_WOWLAN_TCP_WAKE_PAYLOAD,
11105                     tcp->wake_len, tcp->wake_data) ||
11106             nla_put(msg, NL80211_WOWLAN_TCP_WAKE_MASK,
11107                     DIV_ROUND_UP(tcp->wake_len, 8), tcp->wake_mask))
11108                 return -ENOBUFS;
11109
11110         if (tcp->payload_seq.len &&
11111             nla_put(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ,
11112                     sizeof(tcp->payload_seq), &tcp->payload_seq))
11113                 return -ENOBUFS;
11114
11115         if (tcp->payload_tok.len &&
11116             nla_put(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN,
11117                     sizeof(tcp->payload_tok) + tcp->tokens_size,
11118                     &tcp->payload_tok))
11119                 return -ENOBUFS;
11120
11121         nla_nest_end(msg, nl_tcp);
11122
11123         return 0;
11124 }
11125
11126 static int nl80211_send_wowlan_nd(struct sk_buff *msg,
11127                                   struct cfg80211_sched_scan_request *req)
11128 {
11129         struct nlattr *nd, *freqs, *matches, *match, *scan_plans, *scan_plan;
11130         int i;
11131
11132         if (!req)
11133                 return 0;
11134
11135         nd = nla_nest_start_noflag(msg, NL80211_WOWLAN_TRIG_NET_DETECT);
11136         if (!nd)
11137                 return -ENOBUFS;
11138
11139         if (req->n_scan_plans == 1 &&
11140             nla_put_u32(msg, NL80211_ATTR_SCHED_SCAN_INTERVAL,
11141                         req->scan_plans[0].interval * 1000))
11142                 return -ENOBUFS;
11143
11144         if (nla_put_u32(msg, NL80211_ATTR_SCHED_SCAN_DELAY, req->delay))
11145                 return -ENOBUFS;
11146
11147         if (req->relative_rssi_set) {
11148                 struct nl80211_bss_select_rssi_adjust rssi_adjust;
11149
11150                 if (nla_put_s8(msg, NL80211_ATTR_SCHED_SCAN_RELATIVE_RSSI,
11151                                req->relative_rssi))
11152                         return -ENOBUFS;
11153
11154                 rssi_adjust.band = req->rssi_adjust.band;
11155                 rssi_adjust.delta = req->rssi_adjust.delta;
11156                 if (nla_put(msg, NL80211_ATTR_SCHED_SCAN_RSSI_ADJUST,
11157                             sizeof(rssi_adjust), &rssi_adjust))
11158                         return -ENOBUFS;
11159         }
11160
11161         freqs = nla_nest_start_noflag(msg, NL80211_ATTR_SCAN_FREQUENCIES);
11162         if (!freqs)
11163                 return -ENOBUFS;
11164
11165         for (i = 0; i < req->n_channels; i++) {
11166                 if (nla_put_u32(msg, i, req->channels[i]->center_freq))
11167                         return -ENOBUFS;
11168         }
11169
11170         nla_nest_end(msg, freqs);
11171
11172         if (req->n_match_sets) {
11173                 matches = nla_nest_start_noflag(msg,
11174                                                 NL80211_ATTR_SCHED_SCAN_MATCH);
11175                 if (!matches)
11176                         return -ENOBUFS;
11177
11178                 for (i = 0; i < req->n_match_sets; i++) {
11179                         match = nla_nest_start_noflag(msg, i);
11180                         if (!match)
11181                                 return -ENOBUFS;
11182
11183                         if (nla_put(msg, NL80211_SCHED_SCAN_MATCH_ATTR_SSID,
11184                                     req->match_sets[i].ssid.ssid_len,
11185                                     req->match_sets[i].ssid.ssid))
11186                                 return -ENOBUFS;
11187                         nla_nest_end(msg, match);
11188                 }
11189                 nla_nest_end(msg, matches);
11190         }
11191
11192         scan_plans = nla_nest_start_noflag(msg, NL80211_ATTR_SCHED_SCAN_PLANS);
11193         if (!scan_plans)
11194                 return -ENOBUFS;
11195
11196         for (i = 0; i < req->n_scan_plans; i++) {
11197                 scan_plan = nla_nest_start_noflag(msg, i + 1);
11198                 if (!scan_plan)
11199                         return -ENOBUFS;
11200
11201                 if (nla_put_u32(msg, NL80211_SCHED_SCAN_PLAN_INTERVAL,
11202                                 req->scan_plans[i].interval) ||
11203                     (req->scan_plans[i].iterations &&
11204                      nla_put_u32(msg, NL80211_SCHED_SCAN_PLAN_ITERATIONS,
11205                                  req->scan_plans[i].iterations)))
11206                         return -ENOBUFS;
11207                 nla_nest_end(msg, scan_plan);
11208         }
11209         nla_nest_end(msg, scan_plans);
11210
11211         nla_nest_end(msg, nd);
11212
11213         return 0;
11214 }
11215
11216 static int nl80211_get_wowlan(struct sk_buff *skb, struct genl_info *info)
11217 {
11218         struct cfg80211_registered_device *rdev = info->user_ptr[0];
11219         struct sk_buff *msg;
11220         void *hdr;
11221         u32 size = NLMSG_DEFAULT_SIZE;
11222
11223         if (!rdev->wiphy.wowlan)
11224                 return -EOPNOTSUPP;
11225
11226         if (rdev->wiphy.wowlan_config && rdev->wiphy.wowlan_config->tcp) {
11227                 /* adjust size to have room for all the data */
11228                 size += rdev->wiphy.wowlan_config->tcp->tokens_size +
11229                         rdev->wiphy.wowlan_config->tcp->payload_len +
11230                         rdev->wiphy.wowlan_config->tcp->wake_len +
11231                         rdev->wiphy.wowlan_config->tcp->wake_len / 8;
11232         }
11233
11234         msg = nlmsg_new(size, GFP_KERNEL);
11235         if (!msg)
11236                 return -ENOMEM;
11237
11238         hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
11239                              NL80211_CMD_GET_WOWLAN);
11240         if (!hdr)
11241                 goto nla_put_failure;
11242
11243         if (rdev->wiphy.wowlan_config) {
11244                 struct nlattr *nl_wowlan;
11245
11246                 nl_wowlan = nla_nest_start_noflag(msg,
11247                                                   NL80211_ATTR_WOWLAN_TRIGGERS);
11248                 if (!nl_wowlan)
11249                         goto nla_put_failure;
11250
11251                 if ((rdev->wiphy.wowlan_config->any &&
11252                      nla_put_flag(msg, NL80211_WOWLAN_TRIG_ANY)) ||
11253                     (rdev->wiphy.wowlan_config->disconnect &&
11254                      nla_put_flag(msg, NL80211_WOWLAN_TRIG_DISCONNECT)) ||
11255                     (rdev->wiphy.wowlan_config->magic_pkt &&
11256                      nla_put_flag(msg, NL80211_WOWLAN_TRIG_MAGIC_PKT)) ||
11257                     (rdev->wiphy.wowlan_config->gtk_rekey_failure &&
11258                      nla_put_flag(msg, NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE)) ||
11259                     (rdev->wiphy.wowlan_config->eap_identity_req &&
11260                      nla_put_flag(msg, NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST)) ||
11261                     (rdev->wiphy.wowlan_config->four_way_handshake &&
11262                      nla_put_flag(msg, NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE)) ||
11263                     (rdev->wiphy.wowlan_config->rfkill_release &&
11264                      nla_put_flag(msg, NL80211_WOWLAN_TRIG_RFKILL_RELEASE)))
11265                         goto nla_put_failure;
11266
11267                 if (nl80211_send_wowlan_patterns(msg, rdev))
11268                         goto nla_put_failure;
11269
11270                 if (nl80211_send_wowlan_tcp(msg,
11271                                             rdev->wiphy.wowlan_config->tcp))
11272                         goto nla_put_failure;
11273
11274                 if (nl80211_send_wowlan_nd(
11275                             msg,
11276                             rdev->wiphy.wowlan_config->nd_config))
11277                         goto nla_put_failure;
11278
11279                 nla_nest_end(msg, nl_wowlan);
11280         }
11281
11282         genlmsg_end(msg, hdr);
11283         return genlmsg_reply(msg, info);
11284
11285 nla_put_failure:
11286         nlmsg_free(msg);
11287         return -ENOBUFS;
11288 }
11289
11290 static int nl80211_parse_wowlan_tcp(struct cfg80211_registered_device *rdev,
11291                                     struct nlattr *attr,
11292                                     struct cfg80211_wowlan *trig)
11293 {
11294         struct nlattr *tb[NUM_NL80211_WOWLAN_TCP];
11295         struct cfg80211_wowlan_tcp *cfg;
11296         struct nl80211_wowlan_tcp_data_token *tok = NULL;
11297         struct nl80211_wowlan_tcp_data_seq *seq = NULL;
11298         u32 size;
11299         u32 data_size, wake_size, tokens_size = 0, wake_mask_size;
11300         int err, port;
11301
11302         if (!rdev->wiphy.wowlan->tcp)
11303                 return -EINVAL;
11304
11305         err = nla_parse_nested_deprecated(tb, MAX_NL80211_WOWLAN_TCP, attr,
11306                                           nl80211_wowlan_tcp_policy, NULL);
11307         if (err)
11308                 return err;
11309
11310         if (!tb[NL80211_WOWLAN_TCP_SRC_IPV4] ||
11311             !tb[NL80211_WOWLAN_TCP_DST_IPV4] ||
11312             !tb[NL80211_WOWLAN_TCP_DST_MAC] ||
11313             !tb[NL80211_WOWLAN_TCP_DST_PORT] ||
11314             !tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD] ||
11315             !tb[NL80211_WOWLAN_TCP_DATA_INTERVAL] ||
11316             !tb[NL80211_WOWLAN_TCP_WAKE_PAYLOAD] ||
11317             !tb[NL80211_WOWLAN_TCP_WAKE_MASK])
11318                 return -EINVAL;
11319
11320         data_size = nla_len(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD]);
11321         if (data_size > rdev->wiphy.wowlan->tcp->data_payload_max)
11322                 return -EINVAL;
11323
11324         if (nla_get_u32(tb[NL80211_WOWLAN_TCP_DATA_INTERVAL]) >
11325                         rdev->wiphy.wowlan->tcp->data_interval_max ||
11326             nla_get_u32(tb[NL80211_WOWLAN_TCP_DATA_INTERVAL]) == 0)
11327                 return -EINVAL;
11328
11329         wake_size = nla_len(tb[NL80211_WOWLAN_TCP_WAKE_PAYLOAD]);
11330         if (wake_size > rdev->wiphy.wowlan->tcp->wake_payload_max)
11331                 return -EINVAL;
11332
11333         wake_mask_size = nla_len(tb[NL80211_WOWLAN_TCP_WAKE_MASK]);
11334         if (wake_mask_size != DIV_ROUND_UP(wake_size, 8))
11335                 return -EINVAL;
11336
11337         if (tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN]) {
11338                 u32 tokln = nla_len(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN]);
11339
11340                 tok = nla_data(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN]);
11341                 tokens_size = tokln - sizeof(*tok);
11342
11343                 if (!tok->len || tokens_size % tok->len)
11344                         return -EINVAL;
11345                 if (!rdev->wiphy.wowlan->tcp->tok)
11346                         return -EINVAL;
11347                 if (tok->len > rdev->wiphy.wowlan->tcp->tok->max_len)
11348                         return -EINVAL;
11349                 if (tok->len < rdev->wiphy.wowlan->tcp->tok->min_len)
11350                         return -EINVAL;
11351                 if (tokens_size > rdev->wiphy.wowlan->tcp->tok->bufsize)
11352                         return -EINVAL;
11353                 if (tok->offset + tok->len > data_size)
11354                         return -EINVAL;
11355         }
11356
11357         if (tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ]) {
11358                 seq = nla_data(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ]);
11359                 if (!rdev->wiphy.wowlan->tcp->seq)
11360                         return -EINVAL;
11361                 if (seq->len == 0 || seq->len > 4)
11362                         return -EINVAL;
11363                 if (seq->len + seq->offset > data_size)
11364                         return -EINVAL;
11365         }
11366
11367         size = sizeof(*cfg);
11368         size += data_size;
11369         size += wake_size + wake_mask_size;
11370         size += tokens_size;
11371
11372         cfg = kzalloc(size, GFP_KERNEL);
11373         if (!cfg)
11374                 return -ENOMEM;
11375         cfg->src = nla_get_in_addr(tb[NL80211_WOWLAN_TCP_SRC_IPV4]);
11376         cfg->dst = nla_get_in_addr(tb[NL80211_WOWLAN_TCP_DST_IPV4]);
11377         memcpy(cfg->dst_mac, nla_data(tb[NL80211_WOWLAN_TCP_DST_MAC]),
11378                ETH_ALEN);
11379         if (tb[NL80211_WOWLAN_TCP_SRC_PORT])
11380                 port = nla_get_u16(tb[NL80211_WOWLAN_TCP_SRC_PORT]);
11381         else
11382                 port = 0;
11383 #ifdef CONFIG_INET
11384         /* allocate a socket and port for it and use it */
11385         err = __sock_create(wiphy_net(&rdev->wiphy), PF_INET, SOCK_STREAM,
11386                             IPPROTO_TCP, &cfg->sock, 1);
11387         if (err) {
11388                 kfree(cfg);
11389                 return err;
11390         }
11391         if (inet_csk_get_port(cfg->sock->sk, port)) {
11392                 sock_release(cfg->sock);
11393                 kfree(cfg);
11394                 return -EADDRINUSE;
11395         }
11396         cfg->src_port = inet_sk(cfg->sock->sk)->inet_num;
11397 #else
11398         if (!port) {
11399                 kfree(cfg);
11400                 return -EINVAL;
11401         }
11402         cfg->src_port = port;
11403 #endif
11404
11405         cfg->dst_port = nla_get_u16(tb[NL80211_WOWLAN_TCP_DST_PORT]);
11406         cfg->payload_len = data_size;
11407         cfg->payload = (u8 *)cfg + sizeof(*cfg) + tokens_size;
11408         memcpy((void *)cfg->payload,
11409                nla_data(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD]),
11410                data_size);
11411         if (seq)
11412                 cfg->payload_seq = *seq;
11413         cfg->data_interval = nla_get_u32(tb[NL80211_WOWLAN_TCP_DATA_INTERVAL]);
11414         cfg->wake_len = wake_size;
11415         cfg->wake_data = (u8 *)cfg + sizeof(*cfg) + tokens_size + data_size;
11416         memcpy((void *)cfg->wake_data,
11417                nla_data(tb[NL80211_WOWLAN_TCP_WAKE_PAYLOAD]),
11418                wake_size);
11419         cfg->wake_mask = (u8 *)cfg + sizeof(*cfg) + tokens_size +
11420                          data_size + wake_size;
11421         memcpy((void *)cfg->wake_mask,
11422                nla_data(tb[NL80211_WOWLAN_TCP_WAKE_MASK]),
11423                wake_mask_size);
11424         if (tok) {
11425                 cfg->tokens_size = tokens_size;
11426                 memcpy(&cfg->payload_tok, tok, sizeof(*tok) + tokens_size);
11427         }
11428
11429         trig->tcp = cfg;
11430
11431         return 0;
11432 }
11433
11434 static int nl80211_parse_wowlan_nd(struct cfg80211_registered_device *rdev,
11435                                    const struct wiphy_wowlan_support *wowlan,
11436                                    struct nlattr *attr,
11437                                    struct cfg80211_wowlan *trig)
11438 {
11439         struct nlattr **tb;
11440         int err;
11441
11442         tb = kcalloc(NUM_NL80211_ATTR, sizeof(*tb), GFP_KERNEL);
11443         if (!tb)
11444                 return -ENOMEM;
11445
11446         if (!(wowlan->flags & WIPHY_WOWLAN_NET_DETECT)) {
11447                 err = -EOPNOTSUPP;
11448                 goto out;
11449         }
11450
11451         err = nla_parse_nested_deprecated(tb, NL80211_ATTR_MAX, attr,
11452                                           nl80211_policy, NULL);
11453         if (err)
11454                 goto out;
11455
11456         trig->nd_config = nl80211_parse_sched_scan(&rdev->wiphy, NULL, tb,
11457                                                    wowlan->max_nd_match_sets);
11458         err = PTR_ERR_OR_ZERO(trig->nd_config);
11459         if (err)
11460                 trig->nd_config = NULL;
11461
11462 out:
11463         kfree(tb);
11464         return err;
11465 }
11466
11467 static int nl80211_set_wowlan(struct sk_buff *skb, struct genl_info *info)
11468 {
11469         struct cfg80211_registered_device *rdev = info->user_ptr[0];
11470         struct nlattr *tb[NUM_NL80211_WOWLAN_TRIG];
11471         struct cfg80211_wowlan new_triggers = {};
11472         struct cfg80211_wowlan *ntrig;
11473         const struct wiphy_wowlan_support *wowlan = rdev->wiphy.wowlan;
11474         int err, i;
11475         bool prev_enabled = rdev->wiphy.wowlan_config;
11476         bool regular = false;
11477
11478         if (!wowlan)
11479                 return -EOPNOTSUPP;
11480
11481         if (!info->attrs[NL80211_ATTR_WOWLAN_TRIGGERS]) {
11482                 cfg80211_rdev_free_wowlan(rdev);
11483                 rdev->wiphy.wowlan_config = NULL;
11484                 goto set_wakeup;
11485         }
11486
11487         err = nla_parse_nested_deprecated(tb, MAX_NL80211_WOWLAN_TRIG,
11488                                           info->attrs[NL80211_ATTR_WOWLAN_TRIGGERS],
11489                                           nl80211_wowlan_policy, info->extack);
11490         if (err)
11491                 return err;
11492
11493         if (tb[NL80211_WOWLAN_TRIG_ANY]) {
11494                 if (!(wowlan->flags & WIPHY_WOWLAN_ANY))
11495                         return -EINVAL;
11496                 new_triggers.any = true;
11497         }
11498
11499         if (tb[NL80211_WOWLAN_TRIG_DISCONNECT]) {
11500                 if (!(wowlan->flags & WIPHY_WOWLAN_DISCONNECT))
11501                         return -EINVAL;
11502                 new_triggers.disconnect = true;
11503                 regular = true;
11504         }
11505
11506         if (tb[NL80211_WOWLAN_TRIG_MAGIC_PKT]) {
11507                 if (!(wowlan->flags & WIPHY_WOWLAN_MAGIC_PKT))
11508                         return -EINVAL;
11509                 new_triggers.magic_pkt = true;
11510                 regular = true;
11511         }
11512
11513         if (tb[NL80211_WOWLAN_TRIG_GTK_REKEY_SUPPORTED])
11514                 return -EINVAL;
11515
11516         if (tb[NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE]) {
11517                 if (!(wowlan->flags & WIPHY_WOWLAN_GTK_REKEY_FAILURE))
11518                         return -EINVAL;
11519                 new_triggers.gtk_rekey_failure = true;
11520                 regular = true;
11521         }
11522
11523         if (tb[NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST]) {
11524                 if (!(wowlan->flags & WIPHY_WOWLAN_EAP_IDENTITY_REQ))
11525                         return -EINVAL;
11526                 new_triggers.eap_identity_req = true;
11527                 regular = true;
11528         }
11529
11530         if (tb[NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE]) {
11531                 if (!(wowlan->flags & WIPHY_WOWLAN_4WAY_HANDSHAKE))
11532                         return -EINVAL;
11533                 new_triggers.four_way_handshake = true;
11534                 regular = true;
11535         }
11536
11537         if (tb[NL80211_WOWLAN_TRIG_RFKILL_RELEASE]) {
11538                 if (!(wowlan->flags & WIPHY_WOWLAN_RFKILL_RELEASE))
11539                         return -EINVAL;
11540                 new_triggers.rfkill_release = true;
11541                 regular = true;
11542         }
11543
11544         if (tb[NL80211_WOWLAN_TRIG_PKT_PATTERN]) {
11545                 struct nlattr *pat;
11546                 int n_patterns = 0;
11547                 int rem, pat_len, mask_len, pkt_offset;
11548                 struct nlattr *pat_tb[NUM_NL80211_PKTPAT];
11549
11550                 regular = true;
11551
11552                 nla_for_each_nested(pat, tb[NL80211_WOWLAN_TRIG_PKT_PATTERN],
11553                                     rem)
11554                         n_patterns++;
11555                 if (n_patterns > wowlan->n_patterns)
11556                         return -EINVAL;
11557
11558                 new_triggers.patterns = kcalloc(n_patterns,
11559                                                 sizeof(new_triggers.patterns[0]),
11560                                                 GFP_KERNEL);
11561                 if (!new_triggers.patterns)
11562                         return -ENOMEM;
11563
11564                 new_triggers.n_patterns = n_patterns;
11565                 i = 0;
11566
11567                 nla_for_each_nested(pat, tb[NL80211_WOWLAN_TRIG_PKT_PATTERN],
11568                                     rem) {
11569                         u8 *mask_pat;
11570
11571                         err = nla_parse_nested_deprecated(pat_tb,
11572                                                           MAX_NL80211_PKTPAT,
11573                                                           pat,
11574                                                           nl80211_packet_pattern_policy,
11575                                                           info->extack);
11576                         if (err)
11577                                 goto error;
11578
11579                         err = -EINVAL;
11580                         if (!pat_tb[NL80211_PKTPAT_MASK] ||
11581                             !pat_tb[NL80211_PKTPAT_PATTERN])
11582                                 goto error;
11583                         pat_len = nla_len(pat_tb[NL80211_PKTPAT_PATTERN]);
11584                         mask_len = DIV_ROUND_UP(pat_len, 8);
11585                         if (nla_len(pat_tb[NL80211_PKTPAT_MASK]) != mask_len)
11586                                 goto error;
11587                         if (pat_len > wowlan->pattern_max_len ||
11588                             pat_len < wowlan->pattern_min_len)
11589                                 goto error;
11590
11591                         if (!pat_tb[NL80211_PKTPAT_OFFSET])
11592                                 pkt_offset = 0;
11593                         else
11594                                 pkt_offset = nla_get_u32(
11595                                         pat_tb[NL80211_PKTPAT_OFFSET]);
11596                         if (pkt_offset > wowlan->max_pkt_offset)
11597                                 goto error;
11598                         new_triggers.patterns[i].pkt_offset = pkt_offset;
11599
11600                         mask_pat = kmalloc(mask_len + pat_len, GFP_KERNEL);
11601                         if (!mask_pat) {
11602                                 err = -ENOMEM;
11603                                 goto error;
11604                         }
11605                         new_triggers.patterns[i].mask = mask_pat;
11606                         memcpy(mask_pat, nla_data(pat_tb[NL80211_PKTPAT_MASK]),
11607                                mask_len);
11608                         mask_pat += mask_len;
11609                         new_triggers.patterns[i].pattern = mask_pat;
11610                         new_triggers.patterns[i].pattern_len = pat_len;
11611                         memcpy(mask_pat,
11612                                nla_data(pat_tb[NL80211_PKTPAT_PATTERN]),
11613                                pat_len);
11614                         i++;
11615                 }
11616         }
11617
11618         if (tb[NL80211_WOWLAN_TRIG_TCP_CONNECTION]) {
11619                 regular = true;
11620                 err = nl80211_parse_wowlan_tcp(
11621                         rdev, tb[NL80211_WOWLAN_TRIG_TCP_CONNECTION],
11622                         &new_triggers);
11623                 if (err)
11624                         goto error;
11625         }
11626
11627         if (tb[NL80211_WOWLAN_TRIG_NET_DETECT]) {
11628                 regular = true;
11629                 err = nl80211_parse_wowlan_nd(
11630                         rdev, wowlan, tb[NL80211_WOWLAN_TRIG_NET_DETECT],
11631                         &new_triggers);
11632                 if (err)
11633                         goto error;
11634         }
11635
11636         /* The 'any' trigger means the device continues operating more or less
11637          * as in its normal operation mode and wakes up the host on most of the
11638          * normal interrupts (like packet RX, ...)
11639          * It therefore makes little sense to combine with the more constrained
11640          * wakeup trigger modes.
11641          */
11642         if (new_triggers.any && regular) {
11643                 err = -EINVAL;
11644                 goto error;
11645         }
11646
11647         ntrig = kmemdup(&new_triggers, sizeof(new_triggers), GFP_KERNEL);
11648         if (!ntrig) {
11649                 err = -ENOMEM;
11650                 goto error;
11651         }
11652         cfg80211_rdev_free_wowlan(rdev);
11653         rdev->wiphy.wowlan_config = ntrig;
11654
11655  set_wakeup:
11656         if (rdev->ops->set_wakeup &&
11657             prev_enabled != !!rdev->wiphy.wowlan_config)
11658                 rdev_set_wakeup(rdev, rdev->wiphy.wowlan_config);
11659
11660         return 0;
11661  error:
11662         for (i = 0; i < new_triggers.n_patterns; i++)
11663                 kfree(new_triggers.patterns[i].mask);
11664         kfree(new_triggers.patterns);
11665         if (new_triggers.tcp && new_triggers.tcp->sock)
11666                 sock_release(new_triggers.tcp->sock);
11667         kfree(new_triggers.tcp);
11668         kfree(new_triggers.nd_config);
11669         return err;
11670 }
11671 #endif
11672
11673 static int nl80211_send_coalesce_rules(struct sk_buff *msg,
11674                                        struct cfg80211_registered_device *rdev)
11675 {
11676         struct nlattr *nl_pats, *nl_pat, *nl_rule, *nl_rules;
11677         int i, j, pat_len;
11678         struct cfg80211_coalesce_rules *rule;
11679
11680         if (!rdev->coalesce->n_rules)
11681                 return 0;
11682
11683         nl_rules = nla_nest_start_noflag(msg, NL80211_ATTR_COALESCE_RULE);
11684         if (!nl_rules)
11685                 return -ENOBUFS;
11686
11687         for (i = 0; i < rdev->coalesce->n_rules; i++) {
11688                 nl_rule = nla_nest_start_noflag(msg, i + 1);
11689                 if (!nl_rule)
11690                         return -ENOBUFS;
11691
11692                 rule = &rdev->coalesce->rules[i];
11693                 if (nla_put_u32(msg, NL80211_ATTR_COALESCE_RULE_DELAY,
11694                                 rule->delay))
11695                         return -ENOBUFS;
11696
11697                 if (nla_put_u32(msg, NL80211_ATTR_COALESCE_RULE_CONDITION,
11698                                 rule->condition))
11699                         return -ENOBUFS;
11700
11701                 nl_pats = nla_nest_start_noflag(msg,
11702                                                 NL80211_ATTR_COALESCE_RULE_PKT_PATTERN);
11703                 if (!nl_pats)
11704                         return -ENOBUFS;
11705
11706                 for (j = 0; j < rule->n_patterns; j++) {
11707                         nl_pat = nla_nest_start_noflag(msg, j + 1);
11708                         if (!nl_pat)
11709                                 return -ENOBUFS;
11710                         pat_len = rule->patterns[j].pattern_len;
11711                         if (nla_put(msg, NL80211_PKTPAT_MASK,
11712                                     DIV_ROUND_UP(pat_len, 8),
11713                                     rule->patterns[j].mask) ||
11714                             nla_put(msg, NL80211_PKTPAT_PATTERN, pat_len,
11715                                     rule->patterns[j].pattern) ||
11716                             nla_put_u32(msg, NL80211_PKTPAT_OFFSET,
11717                                         rule->patterns[j].pkt_offset))
11718                                 return -ENOBUFS;
11719                         nla_nest_end(msg, nl_pat);
11720                 }
11721                 nla_nest_end(msg, nl_pats);
11722                 nla_nest_end(msg, nl_rule);
11723         }
11724         nla_nest_end(msg, nl_rules);
11725
11726         return 0;
11727 }
11728
11729 static int nl80211_get_coalesce(struct sk_buff *skb, struct genl_info *info)
11730 {
11731         struct cfg80211_registered_device *rdev = info->user_ptr[0];
11732         struct sk_buff *msg;
11733         void *hdr;
11734
11735         if (!rdev->wiphy.coalesce)
11736                 return -EOPNOTSUPP;
11737
11738         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
11739         if (!msg)
11740                 return -ENOMEM;
11741
11742         hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
11743                              NL80211_CMD_GET_COALESCE);
11744         if (!hdr)
11745                 goto nla_put_failure;
11746
11747         if (rdev->coalesce && nl80211_send_coalesce_rules(msg, rdev))
11748                 goto nla_put_failure;
11749
11750         genlmsg_end(msg, hdr);
11751         return genlmsg_reply(msg, info);
11752
11753 nla_put_failure:
11754         nlmsg_free(msg);
11755         return -ENOBUFS;
11756 }
11757
11758 void cfg80211_rdev_free_coalesce(struct cfg80211_registered_device *rdev)
11759 {
11760         struct cfg80211_coalesce *coalesce = rdev->coalesce;
11761         int i, j;
11762         struct cfg80211_coalesce_rules *rule;
11763
11764         if (!coalesce)
11765                 return;
11766
11767         for (i = 0; i < coalesce->n_rules; i++) {
11768                 rule = &coalesce->rules[i];
11769                 for (j = 0; j < rule->n_patterns; j++)
11770                         kfree(rule->patterns[j].mask);
11771                 kfree(rule->patterns);
11772         }
11773         kfree(coalesce->rules);
11774         kfree(coalesce);
11775         rdev->coalesce = NULL;
11776 }
11777
11778 static int nl80211_parse_coalesce_rule(struct cfg80211_registered_device *rdev,
11779                                        struct nlattr *rule,
11780                                        struct cfg80211_coalesce_rules *new_rule)
11781 {
11782         int err, i;
11783         const struct wiphy_coalesce_support *coalesce = rdev->wiphy.coalesce;
11784         struct nlattr *tb[NUM_NL80211_ATTR_COALESCE_RULE], *pat;
11785         int rem, pat_len, mask_len, pkt_offset, n_patterns = 0;
11786         struct nlattr *pat_tb[NUM_NL80211_PKTPAT];
11787
11788         err = nla_parse_nested_deprecated(tb, NL80211_ATTR_COALESCE_RULE_MAX,
11789                                           rule, nl80211_coalesce_policy, NULL);
11790         if (err)
11791                 return err;
11792
11793         if (tb[NL80211_ATTR_COALESCE_RULE_DELAY])
11794                 new_rule->delay =
11795                         nla_get_u32(tb[NL80211_ATTR_COALESCE_RULE_DELAY]);
11796         if (new_rule->delay > coalesce->max_delay)
11797                 return -EINVAL;
11798
11799         if (tb[NL80211_ATTR_COALESCE_RULE_CONDITION])
11800                 new_rule->condition =
11801                         nla_get_u32(tb[NL80211_ATTR_COALESCE_RULE_CONDITION]);
11802
11803         if (!tb[NL80211_ATTR_COALESCE_RULE_PKT_PATTERN])
11804                 return -EINVAL;
11805
11806         nla_for_each_nested(pat, tb[NL80211_ATTR_COALESCE_RULE_PKT_PATTERN],
11807                             rem)
11808                 n_patterns++;
11809         if (n_patterns > coalesce->n_patterns)
11810                 return -EINVAL;
11811
11812         new_rule->patterns = kcalloc(n_patterns, sizeof(new_rule->patterns[0]),
11813                                      GFP_KERNEL);
11814         if (!new_rule->patterns)
11815                 return -ENOMEM;
11816
11817         new_rule->n_patterns = n_patterns;
11818         i = 0;
11819
11820         nla_for_each_nested(pat, tb[NL80211_ATTR_COALESCE_RULE_PKT_PATTERN],
11821                             rem) {
11822                 u8 *mask_pat;
11823
11824                 err = nla_parse_nested_deprecated(pat_tb, MAX_NL80211_PKTPAT,
11825                                                   pat,
11826                                                   nl80211_packet_pattern_policy,
11827                                                   NULL);
11828                 if (err)
11829                         return err;
11830
11831                 if (!pat_tb[NL80211_PKTPAT_MASK] ||
11832                     !pat_tb[NL80211_PKTPAT_PATTERN])
11833                         return -EINVAL;
11834                 pat_len = nla_len(pat_tb[NL80211_PKTPAT_PATTERN]);
11835                 mask_len = DIV_ROUND_UP(pat_len, 8);
11836                 if (nla_len(pat_tb[NL80211_PKTPAT_MASK]) != mask_len)
11837                         return -EINVAL;
11838                 if (pat_len > coalesce->pattern_max_len ||
11839                     pat_len < coalesce->pattern_min_len)
11840                         return -EINVAL;
11841
11842                 if (!pat_tb[NL80211_PKTPAT_OFFSET])
11843                         pkt_offset = 0;
11844                 else
11845                         pkt_offset = nla_get_u32(pat_tb[NL80211_PKTPAT_OFFSET]);
11846                 if (pkt_offset > coalesce->max_pkt_offset)
11847                         return -EINVAL;
11848                 new_rule->patterns[i].pkt_offset = pkt_offset;
11849
11850                 mask_pat = kmalloc(mask_len + pat_len, GFP_KERNEL);
11851                 if (!mask_pat)
11852                         return -ENOMEM;
11853
11854                 new_rule->patterns[i].mask = mask_pat;
11855                 memcpy(mask_pat, nla_data(pat_tb[NL80211_PKTPAT_MASK]),
11856                        mask_len);
11857
11858                 mask_pat += mask_len;
11859                 new_rule->patterns[i].pattern = mask_pat;
11860                 new_rule->patterns[i].pattern_len = pat_len;
11861                 memcpy(mask_pat, nla_data(pat_tb[NL80211_PKTPAT_PATTERN]),
11862                        pat_len);
11863                 i++;
11864         }
11865
11866         return 0;
11867 }
11868
11869 static int nl80211_set_coalesce(struct sk_buff *skb, struct genl_info *info)
11870 {
11871         struct cfg80211_registered_device *rdev = info->user_ptr[0];
11872         const struct wiphy_coalesce_support *coalesce = rdev->wiphy.coalesce;
11873         struct cfg80211_coalesce new_coalesce = {};
11874         struct cfg80211_coalesce *n_coalesce;
11875         int err, rem_rule, n_rules = 0, i, j;
11876         struct nlattr *rule;
11877         struct cfg80211_coalesce_rules *tmp_rule;
11878
11879         if (!rdev->wiphy.coalesce || !rdev->ops->set_coalesce)
11880                 return -EOPNOTSUPP;
11881
11882         if (!info->attrs[NL80211_ATTR_COALESCE_RULE]) {
11883                 cfg80211_rdev_free_coalesce(rdev);
11884                 rdev_set_coalesce(rdev, NULL);
11885                 return 0;
11886         }
11887
11888         nla_for_each_nested(rule, info->attrs[NL80211_ATTR_COALESCE_RULE],
11889                             rem_rule)
11890                 n_rules++;
11891         if (n_rules > coalesce->n_rules)
11892                 return -EINVAL;
11893
11894         new_coalesce.rules = kcalloc(n_rules, sizeof(new_coalesce.rules[0]),
11895                                      GFP_KERNEL);
11896         if (!new_coalesce.rules)
11897                 return -ENOMEM;
11898
11899         new_coalesce.n_rules = n_rules;
11900         i = 0;
11901
11902         nla_for_each_nested(rule, info->attrs[NL80211_ATTR_COALESCE_RULE],
11903                             rem_rule) {
11904                 err = nl80211_parse_coalesce_rule(rdev, rule,
11905                                                   &new_coalesce.rules[i]);
11906                 if (err)
11907                         goto error;
11908
11909                 i++;
11910         }
11911
11912         err = rdev_set_coalesce(rdev, &new_coalesce);
11913         if (err)
11914                 goto error;
11915
11916         n_coalesce = kmemdup(&new_coalesce, sizeof(new_coalesce), GFP_KERNEL);
11917         if (!n_coalesce) {
11918                 err = -ENOMEM;
11919                 goto error;
11920         }
11921         cfg80211_rdev_free_coalesce(rdev);
11922         rdev->coalesce = n_coalesce;
11923
11924         return 0;
11925 error:
11926         for (i = 0; i < new_coalesce.n_rules; i++) {
11927                 tmp_rule = &new_coalesce.rules[i];
11928                 for (j = 0; j < tmp_rule->n_patterns; j++)
11929                         kfree(tmp_rule->patterns[j].mask);
11930                 kfree(tmp_rule->patterns);
11931         }
11932         kfree(new_coalesce.rules);
11933
11934         return err;
11935 }
11936
11937 static int nl80211_set_rekey_data(struct sk_buff *skb, struct genl_info *info)
11938 {
11939         struct cfg80211_registered_device *rdev = info->user_ptr[0];
11940         struct net_device *dev = info->user_ptr[1];
11941         struct wireless_dev *wdev = dev->ieee80211_ptr;
11942         struct nlattr *tb[NUM_NL80211_REKEY_DATA];
11943         struct cfg80211_gtk_rekey_data rekey_data;
11944         int err;
11945
11946         if (!info->attrs[NL80211_ATTR_REKEY_DATA])
11947                 return -EINVAL;
11948
11949         err = nla_parse_nested_deprecated(tb, MAX_NL80211_REKEY_DATA,
11950                                           info->attrs[NL80211_ATTR_REKEY_DATA],
11951                                           nl80211_rekey_policy, info->extack);
11952         if (err)
11953                 return err;
11954
11955         if (!tb[NL80211_REKEY_DATA_REPLAY_CTR] || !tb[NL80211_REKEY_DATA_KEK] ||
11956             !tb[NL80211_REKEY_DATA_KCK])
11957                 return -EINVAL;
11958         if (nla_len(tb[NL80211_REKEY_DATA_REPLAY_CTR]) != NL80211_REPLAY_CTR_LEN)
11959                 return -ERANGE;
11960         if (nla_len(tb[NL80211_REKEY_DATA_KEK]) != NL80211_KEK_LEN)
11961                 return -ERANGE;
11962         if (nla_len(tb[NL80211_REKEY_DATA_KCK]) != NL80211_KCK_LEN)
11963                 return -ERANGE;
11964
11965         rekey_data.kek = nla_data(tb[NL80211_REKEY_DATA_KEK]);
11966         rekey_data.kck = nla_data(tb[NL80211_REKEY_DATA_KCK]);
11967         rekey_data.replay_ctr = nla_data(tb[NL80211_REKEY_DATA_REPLAY_CTR]);
11968
11969         wdev_lock(wdev);
11970         if (!wdev->current_bss) {
11971                 err = -ENOTCONN;
11972                 goto out;
11973         }
11974
11975         if (!rdev->ops->set_rekey_data) {
11976                 err = -EOPNOTSUPP;
11977                 goto out;
11978         }
11979
11980         err = rdev_set_rekey_data(rdev, dev, &rekey_data);
11981  out:
11982         wdev_unlock(wdev);
11983         return err;
11984 }
11985
11986 static int nl80211_register_unexpected_frame(struct sk_buff *skb,
11987                                              struct genl_info *info)
11988 {
11989         struct net_device *dev = info->user_ptr[1];
11990         struct wireless_dev *wdev = dev->ieee80211_ptr;
11991
11992         if (wdev->iftype != NL80211_IFTYPE_AP &&
11993             wdev->iftype != NL80211_IFTYPE_P2P_GO)
11994                 return -EINVAL;
11995
11996         if (wdev->ap_unexpected_nlportid)
11997                 return -EBUSY;
11998
11999         wdev->ap_unexpected_nlportid = info->snd_portid;
12000         return 0;
12001 }
12002
12003 static int nl80211_probe_client(struct sk_buff *skb,
12004                                 struct genl_info *info)
12005 {
12006         struct cfg80211_registered_device *rdev = info->user_ptr[0];
12007         struct net_device *dev = info->user_ptr[1];
12008         struct wireless_dev *wdev = dev->ieee80211_ptr;
12009         struct sk_buff *msg;
12010         void *hdr;
12011         const u8 *addr;
12012         u64 cookie;
12013         int err;
12014
12015         if (wdev->iftype != NL80211_IFTYPE_AP &&
12016             wdev->iftype != NL80211_IFTYPE_P2P_GO)
12017                 return -EOPNOTSUPP;
12018
12019         if (!info->attrs[NL80211_ATTR_MAC])
12020                 return -EINVAL;
12021
12022         if (!rdev->ops->probe_client)
12023                 return -EOPNOTSUPP;
12024
12025         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
12026         if (!msg)
12027                 return -ENOMEM;
12028
12029         hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
12030                              NL80211_CMD_PROBE_CLIENT);
12031         if (!hdr) {
12032                 err = -ENOBUFS;
12033                 goto free_msg;
12034         }
12035
12036         addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
12037
12038         err = rdev_probe_client(rdev, dev, addr, &cookie);
12039         if (err)
12040                 goto free_msg;
12041
12042         if (nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, cookie,
12043                               NL80211_ATTR_PAD))
12044                 goto nla_put_failure;
12045
12046         genlmsg_end(msg, hdr);
12047
12048         return genlmsg_reply(msg, info);
12049
12050  nla_put_failure:
12051         err = -ENOBUFS;
12052  free_msg:
12053         nlmsg_free(msg);
12054         return err;
12055 }
12056
12057 static int nl80211_register_beacons(struct sk_buff *skb, struct genl_info *info)
12058 {
12059         struct cfg80211_registered_device *rdev = info->user_ptr[0];
12060         struct cfg80211_beacon_registration *reg, *nreg;
12061         int rv;
12062
12063         if (!(rdev->wiphy.flags & WIPHY_FLAG_REPORTS_OBSS))
12064                 return -EOPNOTSUPP;
12065
12066         nreg = kzalloc(sizeof(*nreg), GFP_KERNEL);
12067         if (!nreg)
12068                 return -ENOMEM;
12069
12070         /* First, check if already registered. */
12071         spin_lock_bh(&rdev->beacon_registrations_lock);
12072         list_for_each_entry(reg, &rdev->beacon_registrations, list) {
12073                 if (reg->nlportid == info->snd_portid) {
12074                         rv = -EALREADY;
12075                         goto out_err;
12076                 }
12077         }
12078         /* Add it to the list */
12079         nreg->nlportid = info->snd_portid;
12080         list_add(&nreg->list, &rdev->beacon_registrations);
12081
12082         spin_unlock_bh(&rdev->beacon_registrations_lock);
12083
12084         return 0;
12085 out_err:
12086         spin_unlock_bh(&rdev->beacon_registrations_lock);
12087         kfree(nreg);
12088         return rv;
12089 }
12090
12091 static int nl80211_start_p2p_device(struct sk_buff *skb, struct genl_info *info)
12092 {
12093         struct cfg80211_registered_device *rdev = info->user_ptr[0];
12094         struct wireless_dev *wdev = info->user_ptr[1];
12095         int err;
12096
12097         if (!rdev->ops->start_p2p_device)
12098                 return -EOPNOTSUPP;
12099
12100         if (wdev->iftype != NL80211_IFTYPE_P2P_DEVICE)
12101                 return -EOPNOTSUPP;
12102
12103         if (wdev_running(wdev))
12104                 return 0;
12105
12106         if (rfkill_blocked(rdev->rfkill))
12107                 return -ERFKILL;
12108
12109         err = rdev_start_p2p_device(rdev, wdev);
12110         if (err)
12111                 return err;
12112
12113         wdev->is_running = true;
12114         rdev->opencount++;
12115
12116         return 0;
12117 }
12118
12119 static int nl80211_stop_p2p_device(struct sk_buff *skb, struct genl_info *info)
12120 {
12121         struct cfg80211_registered_device *rdev = info->user_ptr[0];
12122         struct wireless_dev *wdev = info->user_ptr[1];
12123
12124         if (wdev->iftype != NL80211_IFTYPE_P2P_DEVICE)
12125                 return -EOPNOTSUPP;
12126
12127         if (!rdev->ops->stop_p2p_device)
12128                 return -EOPNOTSUPP;
12129
12130         cfg80211_stop_p2p_device(rdev, wdev);
12131
12132         return 0;
12133 }
12134
12135 static int nl80211_start_nan(struct sk_buff *skb, struct genl_info *info)
12136 {
12137         struct cfg80211_registered_device *rdev = info->user_ptr[0];
12138         struct wireless_dev *wdev = info->user_ptr[1];
12139         struct cfg80211_nan_conf conf = {};
12140         int err;
12141
12142         if (wdev->iftype != NL80211_IFTYPE_NAN)
12143                 return -EOPNOTSUPP;
12144
12145         if (wdev_running(wdev))
12146                 return -EEXIST;
12147
12148         if (rfkill_blocked(rdev->rfkill))
12149                 return -ERFKILL;
12150
12151         if (!info->attrs[NL80211_ATTR_NAN_MASTER_PREF])
12152                 return -EINVAL;
12153
12154         conf.master_pref =
12155                 nla_get_u8(info->attrs[NL80211_ATTR_NAN_MASTER_PREF]);
12156
12157         if (info->attrs[NL80211_ATTR_BANDS]) {
12158                 u32 bands = nla_get_u32(info->attrs[NL80211_ATTR_BANDS]);
12159
12160                 if (bands & ~(u32)wdev->wiphy->nan_supported_bands)
12161                         return -EOPNOTSUPP;
12162
12163                 if (bands && !(bands & BIT(NL80211_BAND_2GHZ)))
12164                         return -EINVAL;
12165
12166                 conf.bands = bands;
12167         }
12168
12169         err = rdev_start_nan(rdev, wdev, &conf);
12170         if (err)
12171                 return err;
12172
12173         wdev->is_running = true;
12174         rdev->opencount++;
12175
12176         return 0;
12177 }
12178
12179 static int nl80211_stop_nan(struct sk_buff *skb, struct genl_info *info)
12180 {
12181         struct cfg80211_registered_device *rdev = info->user_ptr[0];
12182         struct wireless_dev *wdev = info->user_ptr[1];
12183
12184         if (wdev->iftype != NL80211_IFTYPE_NAN)
12185                 return -EOPNOTSUPP;
12186
12187         cfg80211_stop_nan(rdev, wdev);
12188
12189         return 0;
12190 }
12191
12192 static int validate_nan_filter(struct nlattr *filter_attr)
12193 {
12194         struct nlattr *attr;
12195         int len = 0, n_entries = 0, rem;
12196
12197         nla_for_each_nested(attr, filter_attr, rem) {
12198                 len += nla_len(attr);
12199                 n_entries++;
12200         }
12201
12202         if (len >= U8_MAX)
12203                 return -EINVAL;
12204
12205         return n_entries;
12206 }
12207
12208 static int handle_nan_filter(struct nlattr *attr_filter,
12209                              struct cfg80211_nan_func *func,
12210                              bool tx)
12211 {
12212         struct nlattr *attr;
12213         int n_entries, rem, i;
12214         struct cfg80211_nan_func_filter *filter;
12215
12216         n_entries = validate_nan_filter(attr_filter);
12217         if (n_entries < 0)
12218                 return n_entries;
12219
12220         BUILD_BUG_ON(sizeof(*func->rx_filters) != sizeof(*func->tx_filters));
12221
12222         filter = kcalloc(n_entries, sizeof(*func->rx_filters), GFP_KERNEL);
12223         if (!filter)
12224                 return -ENOMEM;
12225
12226         i = 0;
12227         nla_for_each_nested(attr, attr_filter, rem) {
12228                 filter[i].filter = nla_memdup(attr, GFP_KERNEL);
12229                 filter[i].len = nla_len(attr);
12230                 i++;
12231         }
12232         if (tx) {
12233                 func->num_tx_filters = n_entries;
12234                 func->tx_filters = filter;
12235         } else {
12236                 func->num_rx_filters = n_entries;
12237                 func->rx_filters = filter;
12238         }
12239
12240         return 0;
12241 }
12242
12243 static int nl80211_nan_add_func(struct sk_buff *skb,
12244                                 struct genl_info *info)
12245 {
12246         struct cfg80211_registered_device *rdev = info->user_ptr[0];
12247         struct wireless_dev *wdev = info->user_ptr[1];
12248         struct nlattr *tb[NUM_NL80211_NAN_FUNC_ATTR], *func_attr;
12249         struct cfg80211_nan_func *func;
12250         struct sk_buff *msg = NULL;
12251         void *hdr = NULL;
12252         int err = 0;
12253
12254         if (wdev->iftype != NL80211_IFTYPE_NAN)
12255                 return -EOPNOTSUPP;
12256
12257         if (!wdev_running(wdev))
12258                 return -ENOTCONN;
12259
12260         if (!info->attrs[NL80211_ATTR_NAN_FUNC])
12261                 return -EINVAL;
12262
12263         err = nla_parse_nested_deprecated(tb, NL80211_NAN_FUNC_ATTR_MAX,
12264                                           info->attrs[NL80211_ATTR_NAN_FUNC],
12265                                           nl80211_nan_func_policy,
12266                                           info->extack);
12267         if (err)
12268                 return err;
12269
12270         func = kzalloc(sizeof(*func), GFP_KERNEL);
12271         if (!func)
12272                 return -ENOMEM;
12273
12274         func->cookie = cfg80211_assign_cookie(rdev);
12275
12276         if (!tb[NL80211_NAN_FUNC_TYPE] ||
12277             nla_get_u8(tb[NL80211_NAN_FUNC_TYPE]) > NL80211_NAN_FUNC_MAX_TYPE) {
12278                 err = -EINVAL;
12279                 goto out;
12280         }
12281
12282
12283         func->type = nla_get_u8(tb[NL80211_NAN_FUNC_TYPE]);
12284
12285         if (!tb[NL80211_NAN_FUNC_SERVICE_ID]) {
12286                 err = -EINVAL;
12287                 goto out;
12288         }
12289
12290         memcpy(func->service_id, nla_data(tb[NL80211_NAN_FUNC_SERVICE_ID]),
12291                sizeof(func->service_id));
12292
12293         func->close_range =
12294                 nla_get_flag(tb[NL80211_NAN_FUNC_CLOSE_RANGE]);
12295
12296         if (tb[NL80211_NAN_FUNC_SERVICE_INFO]) {
12297                 func->serv_spec_info_len =
12298                         nla_len(tb[NL80211_NAN_FUNC_SERVICE_INFO]);
12299                 func->serv_spec_info =
12300                         kmemdup(nla_data(tb[NL80211_NAN_FUNC_SERVICE_INFO]),
12301                                 func->serv_spec_info_len,
12302                                 GFP_KERNEL);
12303                 if (!func->serv_spec_info) {
12304                         err = -ENOMEM;
12305                         goto out;
12306                 }
12307         }
12308
12309         if (tb[NL80211_NAN_FUNC_TTL])
12310                 func->ttl = nla_get_u32(tb[NL80211_NAN_FUNC_TTL]);
12311
12312         switch (func->type) {
12313         case NL80211_NAN_FUNC_PUBLISH:
12314                 if (!tb[NL80211_NAN_FUNC_PUBLISH_TYPE]) {
12315                         err = -EINVAL;
12316                         goto out;
12317                 }
12318
12319                 func->publish_type =
12320                         nla_get_u8(tb[NL80211_NAN_FUNC_PUBLISH_TYPE]);
12321                 func->publish_bcast =
12322                         nla_get_flag(tb[NL80211_NAN_FUNC_PUBLISH_BCAST]);
12323
12324                 if ((!(func->publish_type & NL80211_NAN_SOLICITED_PUBLISH)) &&
12325                         func->publish_bcast) {
12326                         err = -EINVAL;
12327                         goto out;
12328                 }
12329                 break;
12330         case NL80211_NAN_FUNC_SUBSCRIBE:
12331                 func->subscribe_active =
12332                         nla_get_flag(tb[NL80211_NAN_FUNC_SUBSCRIBE_ACTIVE]);
12333                 break;
12334         case NL80211_NAN_FUNC_FOLLOW_UP:
12335                 if (!tb[NL80211_NAN_FUNC_FOLLOW_UP_ID] ||
12336                     !tb[NL80211_NAN_FUNC_FOLLOW_UP_REQ_ID] ||
12337                     !tb[NL80211_NAN_FUNC_FOLLOW_UP_DEST]) {
12338                         err = -EINVAL;
12339                         goto out;
12340                 }
12341
12342                 func->followup_id =
12343                         nla_get_u8(tb[NL80211_NAN_FUNC_FOLLOW_UP_ID]);
12344                 func->followup_reqid =
12345                         nla_get_u8(tb[NL80211_NAN_FUNC_FOLLOW_UP_REQ_ID]);
12346                 memcpy(func->followup_dest.addr,
12347                        nla_data(tb[NL80211_NAN_FUNC_FOLLOW_UP_DEST]),
12348                        sizeof(func->followup_dest.addr));
12349                 if (func->ttl) {
12350                         err = -EINVAL;
12351                         goto out;
12352                 }
12353                 break;
12354         default:
12355                 err = -EINVAL;
12356                 goto out;
12357         }
12358
12359         if (tb[NL80211_NAN_FUNC_SRF]) {
12360                 struct nlattr *srf_tb[NUM_NL80211_NAN_SRF_ATTR];
12361
12362                 err = nla_parse_nested_deprecated(srf_tb,
12363                                                   NL80211_NAN_SRF_ATTR_MAX,
12364                                                   tb[NL80211_NAN_FUNC_SRF],
12365                                                   nl80211_nan_srf_policy,
12366                                                   info->extack);
12367                 if (err)
12368                         goto out;
12369
12370                 func->srf_include =
12371                         nla_get_flag(srf_tb[NL80211_NAN_SRF_INCLUDE]);
12372
12373                 if (srf_tb[NL80211_NAN_SRF_BF]) {
12374                         if (srf_tb[NL80211_NAN_SRF_MAC_ADDRS] ||
12375                             !srf_tb[NL80211_NAN_SRF_BF_IDX]) {
12376                                 err = -EINVAL;
12377                                 goto out;
12378                         }
12379
12380                         func->srf_bf_len =
12381                                 nla_len(srf_tb[NL80211_NAN_SRF_BF]);
12382                         func->srf_bf =
12383                                 kmemdup(nla_data(srf_tb[NL80211_NAN_SRF_BF]),
12384                                         func->srf_bf_len, GFP_KERNEL);
12385                         if (!func->srf_bf) {
12386                                 err = -ENOMEM;
12387                                 goto out;
12388                         }
12389
12390                         func->srf_bf_idx =
12391                                 nla_get_u8(srf_tb[NL80211_NAN_SRF_BF_IDX]);
12392                 } else {
12393                         struct nlattr *attr, *mac_attr =
12394                                 srf_tb[NL80211_NAN_SRF_MAC_ADDRS];
12395                         int n_entries, rem, i = 0;
12396
12397                         if (!mac_attr) {
12398                                 err = -EINVAL;
12399                                 goto out;
12400                         }
12401
12402                         n_entries = validate_acl_mac_addrs(mac_attr);
12403                         if (n_entries <= 0) {
12404                                 err = -EINVAL;
12405                                 goto out;
12406                         }
12407
12408                         func->srf_num_macs = n_entries;
12409                         func->srf_macs =
12410                                 kcalloc(n_entries, sizeof(*func->srf_macs),
12411                                         GFP_KERNEL);
12412                         if (!func->srf_macs) {
12413                                 err = -ENOMEM;
12414                                 goto out;
12415                         }
12416
12417                         nla_for_each_nested(attr, mac_attr, rem)
12418                                 memcpy(func->srf_macs[i++].addr, nla_data(attr),
12419                                        sizeof(*func->srf_macs));
12420                 }
12421         }
12422
12423         if (tb[NL80211_NAN_FUNC_TX_MATCH_FILTER]) {
12424                 err = handle_nan_filter(tb[NL80211_NAN_FUNC_TX_MATCH_FILTER],
12425                                         func, true);
12426                 if (err)
12427                         goto out;
12428         }
12429
12430         if (tb[NL80211_NAN_FUNC_RX_MATCH_FILTER]) {
12431                 err = handle_nan_filter(tb[NL80211_NAN_FUNC_RX_MATCH_FILTER],
12432                                         func, false);
12433                 if (err)
12434                         goto out;
12435         }
12436
12437         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
12438         if (!msg) {
12439                 err = -ENOMEM;
12440                 goto out;
12441         }
12442
12443         hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
12444                              NL80211_CMD_ADD_NAN_FUNCTION);
12445         /* This can't really happen - we just allocated 4KB */
12446         if (WARN_ON(!hdr)) {
12447                 err = -ENOMEM;
12448                 goto out;
12449         }
12450
12451         err = rdev_add_nan_func(rdev, wdev, func);
12452 out:
12453         if (err < 0) {
12454                 cfg80211_free_nan_func(func);
12455                 nlmsg_free(msg);
12456                 return err;
12457         }
12458
12459         /* propagate the instance id and cookie to userspace  */
12460         if (nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, func->cookie,
12461                               NL80211_ATTR_PAD))
12462                 goto nla_put_failure;
12463
12464         func_attr = nla_nest_start_noflag(msg, NL80211_ATTR_NAN_FUNC);
12465         if (!func_attr)
12466                 goto nla_put_failure;
12467
12468         if (nla_put_u8(msg, NL80211_NAN_FUNC_INSTANCE_ID,
12469                        func->instance_id))
12470                 goto nla_put_failure;
12471
12472         nla_nest_end(msg, func_attr);
12473
12474         genlmsg_end(msg, hdr);
12475         return genlmsg_reply(msg, info);
12476
12477 nla_put_failure:
12478         nlmsg_free(msg);
12479         return -ENOBUFS;
12480 }
12481
12482 static int nl80211_nan_del_func(struct sk_buff *skb,
12483                                struct genl_info *info)
12484 {
12485         struct cfg80211_registered_device *rdev = info->user_ptr[0];
12486         struct wireless_dev *wdev = info->user_ptr[1];
12487         u64 cookie;
12488
12489         if (wdev->iftype != NL80211_IFTYPE_NAN)
12490                 return -EOPNOTSUPP;
12491
12492         if (!wdev_running(wdev))
12493                 return -ENOTCONN;
12494
12495         if (!info->attrs[NL80211_ATTR_COOKIE])
12496                 return -EINVAL;
12497
12498         cookie = nla_get_u64(info->attrs[NL80211_ATTR_COOKIE]);
12499
12500         rdev_del_nan_func(rdev, wdev, cookie);
12501
12502         return 0;
12503 }
12504
12505 static int nl80211_nan_change_config(struct sk_buff *skb,
12506                                      struct genl_info *info)
12507 {
12508         struct cfg80211_registered_device *rdev = info->user_ptr[0];
12509         struct wireless_dev *wdev = info->user_ptr[1];
12510         struct cfg80211_nan_conf conf = {};
12511         u32 changed = 0;
12512
12513         if (wdev->iftype != NL80211_IFTYPE_NAN)
12514                 return -EOPNOTSUPP;
12515
12516         if (!wdev_running(wdev))
12517                 return -ENOTCONN;
12518
12519         if (info->attrs[NL80211_ATTR_NAN_MASTER_PREF]) {
12520                 conf.master_pref =
12521                         nla_get_u8(info->attrs[NL80211_ATTR_NAN_MASTER_PREF]);
12522                 if (conf.master_pref <= 1 || conf.master_pref == 255)
12523                         return -EINVAL;
12524
12525                 changed |= CFG80211_NAN_CONF_CHANGED_PREF;
12526         }
12527
12528         if (info->attrs[NL80211_ATTR_BANDS]) {
12529                 u32 bands = nla_get_u32(info->attrs[NL80211_ATTR_BANDS]);
12530
12531                 if (bands & ~(u32)wdev->wiphy->nan_supported_bands)
12532                         return -EOPNOTSUPP;
12533
12534                 if (bands && !(bands & BIT(NL80211_BAND_2GHZ)))
12535                         return -EINVAL;
12536
12537                 conf.bands = bands;
12538                 changed |= CFG80211_NAN_CONF_CHANGED_BANDS;
12539         }
12540
12541         if (!changed)
12542                 return -EINVAL;
12543
12544         return rdev_nan_change_conf(rdev, wdev, &conf, changed);
12545 }
12546
12547 void cfg80211_nan_match(struct wireless_dev *wdev,
12548                         struct cfg80211_nan_match_params *match, gfp_t gfp)
12549 {
12550         struct wiphy *wiphy = wdev->wiphy;
12551         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
12552         struct nlattr *match_attr, *local_func_attr, *peer_func_attr;
12553         struct sk_buff *msg;
12554         void *hdr;
12555
12556         if (WARN_ON(!match->inst_id || !match->peer_inst_id || !match->addr))
12557                 return;
12558
12559         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
12560         if (!msg)
12561                 return;
12562
12563         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_NAN_MATCH);
12564         if (!hdr) {
12565                 nlmsg_free(msg);
12566                 return;
12567         }
12568
12569         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
12570             (wdev->netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
12571                                          wdev->netdev->ifindex)) ||
12572             nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
12573                               NL80211_ATTR_PAD))
12574                 goto nla_put_failure;
12575
12576         if (nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, match->cookie,
12577                               NL80211_ATTR_PAD) ||
12578             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, match->addr))
12579                 goto nla_put_failure;
12580
12581         match_attr = nla_nest_start_noflag(msg, NL80211_ATTR_NAN_MATCH);
12582         if (!match_attr)
12583                 goto nla_put_failure;
12584
12585         local_func_attr = nla_nest_start_noflag(msg,
12586                                                 NL80211_NAN_MATCH_FUNC_LOCAL);
12587         if (!local_func_attr)
12588                 goto nla_put_failure;
12589
12590         if (nla_put_u8(msg, NL80211_NAN_FUNC_INSTANCE_ID, match->inst_id))
12591                 goto nla_put_failure;
12592
12593         nla_nest_end(msg, local_func_attr);
12594
12595         peer_func_attr = nla_nest_start_noflag(msg,
12596                                                NL80211_NAN_MATCH_FUNC_PEER);
12597         if (!peer_func_attr)
12598                 goto nla_put_failure;
12599
12600         if (nla_put_u8(msg, NL80211_NAN_FUNC_TYPE, match->type) ||
12601             nla_put_u8(msg, NL80211_NAN_FUNC_INSTANCE_ID, match->peer_inst_id))
12602                 goto nla_put_failure;
12603
12604         if (match->info && match->info_len &&
12605             nla_put(msg, NL80211_NAN_FUNC_SERVICE_INFO, match->info_len,
12606                     match->info))
12607                 goto nla_put_failure;
12608
12609         nla_nest_end(msg, peer_func_attr);
12610         nla_nest_end(msg, match_attr);
12611         genlmsg_end(msg, hdr);
12612
12613         if (!wdev->owner_nlportid)
12614                 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy),
12615                                         msg, 0, NL80211_MCGRP_NAN, gfp);
12616         else
12617                 genlmsg_unicast(wiphy_net(&rdev->wiphy), msg,
12618                                 wdev->owner_nlportid);
12619
12620         return;
12621
12622 nla_put_failure:
12623         nlmsg_free(msg);
12624 }
12625 EXPORT_SYMBOL(cfg80211_nan_match);
12626
12627 void cfg80211_nan_func_terminated(struct wireless_dev *wdev,
12628                                   u8 inst_id,
12629                                   enum nl80211_nan_func_term_reason reason,
12630                                   u64 cookie, gfp_t gfp)
12631 {
12632         struct wiphy *wiphy = wdev->wiphy;
12633         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
12634         struct sk_buff *msg;
12635         struct nlattr *func_attr;
12636         void *hdr;
12637
12638         if (WARN_ON(!inst_id))
12639                 return;
12640
12641         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
12642         if (!msg)
12643                 return;
12644
12645         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_DEL_NAN_FUNCTION);
12646         if (!hdr) {
12647                 nlmsg_free(msg);
12648                 return;
12649         }
12650
12651         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
12652             (wdev->netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
12653                                          wdev->netdev->ifindex)) ||
12654             nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
12655                               NL80211_ATTR_PAD))
12656                 goto nla_put_failure;
12657
12658         if (nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, cookie,
12659                               NL80211_ATTR_PAD))
12660                 goto nla_put_failure;
12661
12662         func_attr = nla_nest_start_noflag(msg, NL80211_ATTR_NAN_FUNC);
12663         if (!func_attr)
12664                 goto nla_put_failure;
12665
12666         if (nla_put_u8(msg, NL80211_NAN_FUNC_INSTANCE_ID, inst_id) ||
12667             nla_put_u8(msg, NL80211_NAN_FUNC_TERM_REASON, reason))
12668                 goto nla_put_failure;
12669
12670         nla_nest_end(msg, func_attr);
12671         genlmsg_end(msg, hdr);
12672
12673         if (!wdev->owner_nlportid)
12674                 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy),
12675                                         msg, 0, NL80211_MCGRP_NAN, gfp);
12676         else
12677                 genlmsg_unicast(wiphy_net(&rdev->wiphy), msg,
12678                                 wdev->owner_nlportid);
12679
12680         return;
12681
12682 nla_put_failure:
12683         nlmsg_free(msg);
12684 }
12685 EXPORT_SYMBOL(cfg80211_nan_func_terminated);
12686
12687 static int nl80211_get_protocol_features(struct sk_buff *skb,
12688                                          struct genl_info *info)
12689 {
12690         void *hdr;
12691         struct sk_buff *msg;
12692
12693         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
12694         if (!msg)
12695                 return -ENOMEM;
12696
12697         hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
12698                              NL80211_CMD_GET_PROTOCOL_FEATURES);
12699         if (!hdr)
12700                 goto nla_put_failure;
12701
12702         if (nla_put_u32(msg, NL80211_ATTR_PROTOCOL_FEATURES,
12703                         NL80211_PROTOCOL_FEATURE_SPLIT_WIPHY_DUMP))
12704                 goto nla_put_failure;
12705
12706         genlmsg_end(msg, hdr);
12707         return genlmsg_reply(msg, info);
12708
12709  nla_put_failure:
12710         kfree_skb(msg);
12711         return -ENOBUFS;
12712 }
12713
12714 static int nl80211_update_ft_ies(struct sk_buff *skb, struct genl_info *info)
12715 {
12716         struct cfg80211_registered_device *rdev = info->user_ptr[0];
12717         struct cfg80211_update_ft_ies_params ft_params;
12718         struct net_device *dev = info->user_ptr[1];
12719
12720         if (!rdev->ops->update_ft_ies)
12721                 return -EOPNOTSUPP;
12722
12723         if (!info->attrs[NL80211_ATTR_MDID] ||
12724             !info->attrs[NL80211_ATTR_IE])
12725                 return -EINVAL;
12726
12727         memset(&ft_params, 0, sizeof(ft_params));
12728         ft_params.md = nla_get_u16(info->attrs[NL80211_ATTR_MDID]);
12729         ft_params.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
12730         ft_params.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
12731
12732         return rdev_update_ft_ies(rdev, dev, &ft_params);
12733 }
12734
12735 static int nl80211_crit_protocol_start(struct sk_buff *skb,
12736                                        struct genl_info *info)
12737 {
12738         struct cfg80211_registered_device *rdev = info->user_ptr[0];
12739         struct wireless_dev *wdev = info->user_ptr[1];
12740         enum nl80211_crit_proto_id proto = NL80211_CRIT_PROTO_UNSPEC;
12741         u16 duration;
12742         int ret;
12743
12744         if (!rdev->ops->crit_proto_start)
12745                 return -EOPNOTSUPP;
12746
12747         if (WARN_ON(!rdev->ops->crit_proto_stop))
12748                 return -EINVAL;
12749
12750         if (rdev->crit_proto_nlportid)
12751                 return -EBUSY;
12752
12753         /* determine protocol if provided */
12754         if (info->attrs[NL80211_ATTR_CRIT_PROT_ID])
12755                 proto = nla_get_u16(info->attrs[NL80211_ATTR_CRIT_PROT_ID]);
12756
12757         if (proto >= NUM_NL80211_CRIT_PROTO)
12758                 return -EINVAL;
12759
12760         /* timeout must be provided */
12761         if (!info->attrs[NL80211_ATTR_MAX_CRIT_PROT_DURATION])
12762                 return -EINVAL;
12763
12764         duration =
12765                 nla_get_u16(info->attrs[NL80211_ATTR_MAX_CRIT_PROT_DURATION]);
12766
12767         if (duration > NL80211_CRIT_PROTO_MAX_DURATION)
12768                 return -ERANGE;
12769
12770         ret = rdev_crit_proto_start(rdev, wdev, proto, duration);
12771         if (!ret)
12772                 rdev->crit_proto_nlportid = info->snd_portid;
12773
12774         return ret;
12775 }
12776
12777 static int nl80211_crit_protocol_stop(struct sk_buff *skb,
12778                                       struct genl_info *info)
12779 {
12780         struct cfg80211_registered_device *rdev = info->user_ptr[0];
12781         struct wireless_dev *wdev = info->user_ptr[1];
12782
12783         if (!rdev->ops->crit_proto_stop)
12784                 return -EOPNOTSUPP;
12785
12786         if (rdev->crit_proto_nlportid) {
12787                 rdev->crit_proto_nlportid = 0;
12788                 rdev_crit_proto_stop(rdev, wdev);
12789         }
12790         return 0;
12791 }
12792
12793 static int nl80211_vendor_check_policy(const struct wiphy_vendor_command *vcmd,
12794                                        struct nlattr *attr,
12795                                        struct netlink_ext_ack *extack)
12796 {
12797         if (vcmd->policy == VENDOR_CMD_RAW_DATA) {
12798                 if (attr->nla_type & NLA_F_NESTED) {
12799                         NL_SET_ERR_MSG_ATTR(extack, attr,
12800                                             "unexpected nested data");
12801                         return -EINVAL;
12802                 }
12803
12804                 return 0;
12805         }
12806
12807         if (!(attr->nla_type & NLA_F_NESTED)) {
12808                 NL_SET_ERR_MSG_ATTR(extack, attr, "expected nested data");
12809                 return -EINVAL;
12810         }
12811
12812         return nl80211_validate_nested(attr, vcmd->maxattr, vcmd->policy,
12813                                        extack);
12814 }
12815
12816 static int nl80211_vendor_cmd(struct sk_buff *skb, struct genl_info *info)
12817 {
12818         struct cfg80211_registered_device *rdev = info->user_ptr[0];
12819         struct wireless_dev *wdev =
12820                 __cfg80211_wdev_from_attrs(genl_info_net(info), info->attrs);
12821         int i, err;
12822         u32 vid, subcmd;
12823
12824         if (!rdev->wiphy.vendor_commands)
12825                 return -EOPNOTSUPP;
12826
12827         if (IS_ERR(wdev)) {
12828                 err = PTR_ERR(wdev);
12829                 if (err != -EINVAL)
12830                         return err;
12831                 wdev = NULL;
12832         } else if (wdev->wiphy != &rdev->wiphy) {
12833                 return -EINVAL;
12834         }
12835
12836         if (!info->attrs[NL80211_ATTR_VENDOR_ID] ||
12837             !info->attrs[NL80211_ATTR_VENDOR_SUBCMD])
12838                 return -EINVAL;
12839
12840         vid = nla_get_u32(info->attrs[NL80211_ATTR_VENDOR_ID]);
12841         subcmd = nla_get_u32(info->attrs[NL80211_ATTR_VENDOR_SUBCMD]);
12842         for (i = 0; i < rdev->wiphy.n_vendor_commands; i++) {
12843                 const struct wiphy_vendor_command *vcmd;
12844                 void *data = NULL;
12845                 int len = 0;
12846
12847                 vcmd = &rdev->wiphy.vendor_commands[i];
12848
12849                 if (vcmd->info.vendor_id != vid || vcmd->info.subcmd != subcmd)
12850                         continue;
12851
12852                 if (vcmd->flags & (WIPHY_VENDOR_CMD_NEED_WDEV |
12853                                    WIPHY_VENDOR_CMD_NEED_NETDEV)) {
12854                         if (!wdev)
12855                                 return -EINVAL;
12856                         if (vcmd->flags & WIPHY_VENDOR_CMD_NEED_NETDEV &&
12857                             !wdev->netdev)
12858                                 return -EINVAL;
12859
12860                         if (vcmd->flags & WIPHY_VENDOR_CMD_NEED_RUNNING) {
12861                                 if (!wdev_running(wdev))
12862                                         return -ENETDOWN;
12863                         }
12864
12865                         if (!vcmd->doit)
12866                                 return -EOPNOTSUPP;
12867                 } else {
12868                         wdev = NULL;
12869                 }
12870
12871                 if (info->attrs[NL80211_ATTR_VENDOR_DATA]) {
12872                         data = nla_data(info->attrs[NL80211_ATTR_VENDOR_DATA]);
12873                         len = nla_len(info->attrs[NL80211_ATTR_VENDOR_DATA]);
12874
12875                         err = nl80211_vendor_check_policy(vcmd,
12876                                         info->attrs[NL80211_ATTR_VENDOR_DATA],
12877                                         info->extack);
12878                         if (err)
12879                                 return err;
12880                 }
12881
12882                 rdev->cur_cmd_info = info;
12883                 err = vcmd->doit(&rdev->wiphy, wdev, data, len);
12884                 rdev->cur_cmd_info = NULL;
12885                 return err;
12886         }
12887
12888         return -EOPNOTSUPP;
12889 }
12890
12891 static int nl80211_prepare_vendor_dump(struct sk_buff *skb,
12892                                        struct netlink_callback *cb,
12893                                        struct cfg80211_registered_device **rdev,
12894                                        struct wireless_dev **wdev)
12895 {
12896         struct nlattr **attrbuf;
12897         u32 vid, subcmd;
12898         unsigned int i;
12899         int vcmd_idx = -1;
12900         int err;
12901         void *data = NULL;
12902         unsigned int data_len = 0;
12903
12904         if (cb->args[0]) {
12905                 /* subtract the 1 again here */
12906                 struct wiphy *wiphy = wiphy_idx_to_wiphy(cb->args[0] - 1);
12907                 struct wireless_dev *tmp;
12908
12909                 if (!wiphy)
12910                         return -ENODEV;
12911                 *rdev = wiphy_to_rdev(wiphy);
12912                 *wdev = NULL;
12913
12914                 if (cb->args[1]) {
12915                         list_for_each_entry(tmp, &wiphy->wdev_list, list) {
12916                                 if (tmp->identifier == cb->args[1] - 1) {
12917                                         *wdev = tmp;
12918                                         break;
12919                                 }
12920                         }
12921                 }
12922
12923                 /* keep rtnl locked in successful case */
12924                 return 0;
12925         }
12926
12927         attrbuf = kcalloc(NUM_NL80211_ATTR, sizeof(*attrbuf), GFP_KERNEL);
12928         if (!attrbuf)
12929                 return -ENOMEM;
12930
12931         err = nlmsg_parse_deprecated(cb->nlh,
12932                                      GENL_HDRLEN + nl80211_fam.hdrsize,
12933                                      attrbuf, nl80211_fam.maxattr,
12934                                      nl80211_policy, NULL);
12935         if (err)
12936                 goto out;
12937
12938         if (!attrbuf[NL80211_ATTR_VENDOR_ID] ||
12939             !attrbuf[NL80211_ATTR_VENDOR_SUBCMD]) {
12940                 err = -EINVAL;
12941                 goto out;
12942         }
12943
12944         *wdev = __cfg80211_wdev_from_attrs(sock_net(skb->sk), attrbuf);
12945         if (IS_ERR(*wdev))
12946                 *wdev = NULL;
12947
12948         *rdev = __cfg80211_rdev_from_attrs(sock_net(skb->sk), attrbuf);
12949         if (IS_ERR(*rdev)) {
12950                 err = PTR_ERR(*rdev);
12951                 goto out;
12952         }
12953
12954         vid = nla_get_u32(attrbuf[NL80211_ATTR_VENDOR_ID]);
12955         subcmd = nla_get_u32(attrbuf[NL80211_ATTR_VENDOR_SUBCMD]);
12956
12957         for (i = 0; i < (*rdev)->wiphy.n_vendor_commands; i++) {
12958                 const struct wiphy_vendor_command *vcmd;
12959
12960                 vcmd = &(*rdev)->wiphy.vendor_commands[i];
12961
12962                 if (vcmd->info.vendor_id != vid || vcmd->info.subcmd != subcmd)
12963                         continue;
12964
12965                 if (!vcmd->dumpit) {
12966                         err = -EOPNOTSUPP;
12967                         goto out;
12968                 }
12969
12970                 vcmd_idx = i;
12971                 break;
12972         }
12973
12974         if (vcmd_idx < 0) {
12975                 err = -EOPNOTSUPP;
12976                 goto out;
12977         }
12978
12979         if (attrbuf[NL80211_ATTR_VENDOR_DATA]) {
12980                 data = nla_data(attrbuf[NL80211_ATTR_VENDOR_DATA]);
12981                 data_len = nla_len(attrbuf[NL80211_ATTR_VENDOR_DATA]);
12982
12983                 err = nl80211_vendor_check_policy(
12984                                 &(*rdev)->wiphy.vendor_commands[vcmd_idx],
12985                                 attrbuf[NL80211_ATTR_VENDOR_DATA],
12986                                 cb->extack);
12987                 if (err)
12988                         goto out;
12989         }
12990
12991         /* 0 is the first index - add 1 to parse only once */
12992         cb->args[0] = (*rdev)->wiphy_idx + 1;
12993         /* add 1 to know if it was NULL */
12994         cb->args[1] = *wdev ? (*wdev)->identifier + 1 : 0;
12995         cb->args[2] = vcmd_idx;
12996         cb->args[3] = (unsigned long)data;
12997         cb->args[4] = data_len;
12998
12999         /* keep rtnl locked in successful case */
13000         err = 0;
13001 out:
13002         kfree(attrbuf);
13003         return err;
13004 }
13005
13006 static int nl80211_vendor_cmd_dump(struct sk_buff *skb,
13007                                    struct netlink_callback *cb)
13008 {
13009         struct cfg80211_registered_device *rdev;
13010         struct wireless_dev *wdev;
13011         unsigned int vcmd_idx;
13012         const struct wiphy_vendor_command *vcmd;
13013         void *data;
13014         int data_len;
13015         int err;
13016         struct nlattr *vendor_data;
13017
13018         rtnl_lock();
13019         err = nl80211_prepare_vendor_dump(skb, cb, &rdev, &wdev);
13020         if (err)
13021                 goto out;
13022
13023         vcmd_idx = cb->args[2];
13024         data = (void *)cb->args[3];
13025         data_len = cb->args[4];
13026         vcmd = &rdev->wiphy.vendor_commands[vcmd_idx];
13027
13028         if (vcmd->flags & (WIPHY_VENDOR_CMD_NEED_WDEV |
13029                            WIPHY_VENDOR_CMD_NEED_NETDEV)) {
13030                 if (!wdev) {
13031                         err = -EINVAL;
13032                         goto out;
13033                 }
13034                 if (vcmd->flags & WIPHY_VENDOR_CMD_NEED_NETDEV &&
13035                     !wdev->netdev) {
13036                         err = -EINVAL;
13037                         goto out;
13038                 }
13039
13040                 if (vcmd->flags & WIPHY_VENDOR_CMD_NEED_RUNNING) {
13041                         if (!wdev_running(wdev)) {
13042                                 err = -ENETDOWN;
13043                                 goto out;
13044                         }
13045                 }
13046         }
13047
13048         while (1) {
13049                 void *hdr = nl80211hdr_put(skb, NETLINK_CB(cb->skb).portid,
13050                                            cb->nlh->nlmsg_seq, NLM_F_MULTI,
13051                                            NL80211_CMD_VENDOR);
13052                 if (!hdr)
13053                         break;
13054
13055                 if (nla_put_u32(skb, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
13056                     (wdev && nla_put_u64_64bit(skb, NL80211_ATTR_WDEV,
13057                                                wdev_id(wdev),
13058                                                NL80211_ATTR_PAD))) {
13059                         genlmsg_cancel(skb, hdr);
13060                         break;
13061                 }
13062
13063                 vendor_data = nla_nest_start_noflag(skb,
13064                                                     NL80211_ATTR_VENDOR_DATA);
13065                 if (!vendor_data) {
13066                         genlmsg_cancel(skb, hdr);
13067                         break;
13068                 }
13069
13070                 err = vcmd->dumpit(&rdev->wiphy, wdev, skb, data, data_len,
13071                                    (unsigned long *)&cb->args[5]);
13072                 nla_nest_end(skb, vendor_data);
13073
13074                 if (err == -ENOBUFS || err == -ENOENT) {
13075                         genlmsg_cancel(skb, hdr);
13076                         break;
13077                 } else if (err) {
13078                         genlmsg_cancel(skb, hdr);
13079                         goto out;
13080                 }
13081
13082                 genlmsg_end(skb, hdr);
13083         }
13084
13085         err = skb->len;
13086  out:
13087         rtnl_unlock();
13088         return err;
13089 }
13090
13091 struct sk_buff *__cfg80211_alloc_reply_skb(struct wiphy *wiphy,
13092                                            enum nl80211_commands cmd,
13093                                            enum nl80211_attrs attr,
13094                                            int approxlen)
13095 {
13096         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
13097
13098         if (WARN_ON(!rdev->cur_cmd_info))
13099                 return NULL;
13100
13101         return __cfg80211_alloc_vendor_skb(rdev, NULL, approxlen,
13102                                            rdev->cur_cmd_info->snd_portid,
13103                                            rdev->cur_cmd_info->snd_seq,
13104                                            cmd, attr, NULL, GFP_KERNEL);
13105 }
13106 EXPORT_SYMBOL(__cfg80211_alloc_reply_skb);
13107
13108 int cfg80211_vendor_cmd_reply(struct sk_buff *skb)
13109 {
13110         struct cfg80211_registered_device *rdev = ((void **)skb->cb)[0];
13111         void *hdr = ((void **)skb->cb)[1];
13112         struct nlattr *data = ((void **)skb->cb)[2];
13113
13114         /* clear CB data for netlink core to own from now on */
13115         memset(skb->cb, 0, sizeof(skb->cb));
13116
13117         if (WARN_ON(!rdev->cur_cmd_info)) {
13118                 kfree_skb(skb);
13119                 return -EINVAL;
13120         }
13121
13122         nla_nest_end(skb, data);
13123         genlmsg_end(skb, hdr);
13124         return genlmsg_reply(skb, rdev->cur_cmd_info);
13125 }
13126 EXPORT_SYMBOL_GPL(cfg80211_vendor_cmd_reply);
13127
13128 unsigned int cfg80211_vendor_cmd_get_sender(struct wiphy *wiphy)
13129 {
13130         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
13131
13132         if (WARN_ON(!rdev->cur_cmd_info))
13133                 return 0;
13134
13135         return rdev->cur_cmd_info->snd_portid;
13136 }
13137 EXPORT_SYMBOL_GPL(cfg80211_vendor_cmd_get_sender);
13138
13139 static int nl80211_set_qos_map(struct sk_buff *skb,
13140                                struct genl_info *info)
13141 {
13142         struct cfg80211_registered_device *rdev = info->user_ptr[0];
13143         struct cfg80211_qos_map *qos_map = NULL;
13144         struct net_device *dev = info->user_ptr[1];
13145         u8 *pos, len, num_des, des_len, des;
13146         int ret;
13147
13148         if (!rdev->ops->set_qos_map)
13149                 return -EOPNOTSUPP;
13150
13151         if (info->attrs[NL80211_ATTR_QOS_MAP]) {
13152                 pos = nla_data(info->attrs[NL80211_ATTR_QOS_MAP]);
13153                 len = nla_len(info->attrs[NL80211_ATTR_QOS_MAP]);
13154
13155                 if (len % 2 || len < IEEE80211_QOS_MAP_LEN_MIN ||
13156                     len > IEEE80211_QOS_MAP_LEN_MAX)
13157                         return -EINVAL;
13158
13159                 qos_map = kzalloc(sizeof(struct cfg80211_qos_map), GFP_KERNEL);
13160                 if (!qos_map)
13161                         return -ENOMEM;
13162
13163                 num_des = (len - IEEE80211_QOS_MAP_LEN_MIN) >> 1;
13164                 if (num_des) {
13165                         des_len = num_des *
13166                                 sizeof(struct cfg80211_dscp_exception);
13167                         memcpy(qos_map->dscp_exception, pos, des_len);
13168                         qos_map->num_des = num_des;
13169                         for (des = 0; des < num_des; des++) {
13170                                 if (qos_map->dscp_exception[des].up > 7) {
13171                                         kfree(qos_map);
13172                                         return -EINVAL;
13173                                 }
13174                         }
13175                         pos += des_len;
13176                 }
13177                 memcpy(qos_map->up, pos, IEEE80211_QOS_MAP_LEN_MIN);
13178         }
13179
13180         wdev_lock(dev->ieee80211_ptr);
13181         ret = nl80211_key_allowed(dev->ieee80211_ptr);
13182         if (!ret)
13183                 ret = rdev_set_qos_map(rdev, dev, qos_map);
13184         wdev_unlock(dev->ieee80211_ptr);
13185
13186         kfree(qos_map);
13187         return ret;
13188 }
13189
13190 static int nl80211_add_tx_ts(struct sk_buff *skb, struct genl_info *info)
13191 {
13192         struct cfg80211_registered_device *rdev = info->user_ptr[0];
13193         struct net_device *dev = info->user_ptr[1];
13194         struct wireless_dev *wdev = dev->ieee80211_ptr;
13195         const u8 *peer;
13196         u8 tsid, up;
13197         u16 admitted_time = 0;
13198         int err;
13199
13200         if (!(rdev->wiphy.features & NL80211_FEATURE_SUPPORTS_WMM_ADMISSION))
13201                 return -EOPNOTSUPP;
13202
13203         if (!info->attrs[NL80211_ATTR_TSID] || !info->attrs[NL80211_ATTR_MAC] ||
13204             !info->attrs[NL80211_ATTR_USER_PRIO])
13205                 return -EINVAL;
13206
13207         tsid = nla_get_u8(info->attrs[NL80211_ATTR_TSID]);
13208         up = nla_get_u8(info->attrs[NL80211_ATTR_USER_PRIO]);
13209
13210         /* WMM uses TIDs 0-7 even for TSPEC */
13211         if (tsid >= IEEE80211_FIRST_TSPEC_TSID) {
13212                 /* TODO: handle 802.11 TSPEC/admission control
13213                  * need more attributes for that (e.g. BA session requirement);
13214                  * change the WMM adminssion test above to allow both then
13215                  */
13216                 return -EINVAL;
13217         }
13218
13219         peer = nla_data(info->attrs[NL80211_ATTR_MAC]);
13220
13221         if (info->attrs[NL80211_ATTR_ADMITTED_TIME]) {
13222                 admitted_time =
13223                         nla_get_u16(info->attrs[NL80211_ATTR_ADMITTED_TIME]);
13224                 if (!admitted_time)
13225                         return -EINVAL;
13226         }
13227
13228         wdev_lock(wdev);
13229         switch (wdev->iftype) {
13230         case NL80211_IFTYPE_STATION:
13231         case NL80211_IFTYPE_P2P_CLIENT:
13232                 if (wdev->current_bss)
13233                         break;
13234                 err = -ENOTCONN;
13235                 goto out;
13236         default:
13237                 err = -EOPNOTSUPP;
13238                 goto out;
13239         }
13240
13241         err = rdev_add_tx_ts(rdev, dev, tsid, peer, up, admitted_time);
13242
13243  out:
13244         wdev_unlock(wdev);
13245         return err;
13246 }
13247
13248 static int nl80211_del_tx_ts(struct sk_buff *skb, struct genl_info *info)
13249 {
13250         struct cfg80211_registered_device *rdev = info->user_ptr[0];
13251         struct net_device *dev = info->user_ptr[1];
13252         struct wireless_dev *wdev = dev->ieee80211_ptr;
13253         const u8 *peer;
13254         u8 tsid;
13255         int err;
13256
13257         if (!info->attrs[NL80211_ATTR_TSID] || !info->attrs[NL80211_ATTR_MAC])
13258                 return -EINVAL;
13259
13260         tsid = nla_get_u8(info->attrs[NL80211_ATTR_TSID]);
13261         peer = nla_data(info->attrs[NL80211_ATTR_MAC]);
13262
13263         wdev_lock(wdev);
13264         err = rdev_del_tx_ts(rdev, dev, tsid, peer);
13265         wdev_unlock(wdev);
13266
13267         return err;
13268 }
13269
13270 static int nl80211_tdls_channel_switch(struct sk_buff *skb,
13271                                        struct genl_info *info)
13272 {
13273         struct cfg80211_registered_device *rdev = info->user_ptr[0];
13274         struct net_device *dev = info->user_ptr[1];
13275         struct wireless_dev *wdev = dev->ieee80211_ptr;
13276         struct cfg80211_chan_def chandef = {};
13277         const u8 *addr;
13278         u8 oper_class;
13279         int err;
13280
13281         if (!rdev->ops->tdls_channel_switch ||
13282             !(rdev->wiphy.features & NL80211_FEATURE_TDLS_CHANNEL_SWITCH))
13283                 return -EOPNOTSUPP;
13284
13285         switch (dev->ieee80211_ptr->iftype) {
13286         case NL80211_IFTYPE_STATION:
13287         case NL80211_IFTYPE_P2P_CLIENT:
13288                 break;
13289         default:
13290                 return -EOPNOTSUPP;
13291         }
13292
13293         if (!info->attrs[NL80211_ATTR_MAC] ||
13294             !info->attrs[NL80211_ATTR_OPER_CLASS])
13295                 return -EINVAL;
13296
13297         err = nl80211_parse_chandef(rdev, info, &chandef);
13298         if (err)
13299                 return err;
13300
13301         /*
13302          * Don't allow wide channels on the 2.4Ghz band, as per IEEE802.11-2012
13303          * section 10.22.6.2.1. Disallow 5/10Mhz channels as well for now, the
13304          * specification is not defined for them.
13305          */
13306         if (chandef.chan->band == NL80211_BAND_2GHZ &&
13307             chandef.width != NL80211_CHAN_WIDTH_20_NOHT &&
13308             chandef.width != NL80211_CHAN_WIDTH_20)
13309                 return -EINVAL;
13310
13311         /* we will be active on the TDLS link */
13312         if (!cfg80211_reg_can_beacon_relax(&rdev->wiphy, &chandef,
13313                                            wdev->iftype))
13314                 return -EINVAL;
13315
13316         /* don't allow switching to DFS channels */
13317         if (cfg80211_chandef_dfs_required(wdev->wiphy, &chandef, wdev->iftype))
13318                 return -EINVAL;
13319
13320         addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
13321         oper_class = nla_get_u8(info->attrs[NL80211_ATTR_OPER_CLASS]);
13322
13323         wdev_lock(wdev);
13324         err = rdev_tdls_channel_switch(rdev, dev, addr, oper_class, &chandef);
13325         wdev_unlock(wdev);
13326
13327         return err;
13328 }
13329
13330 static int nl80211_tdls_cancel_channel_switch(struct sk_buff *skb,
13331                                               struct genl_info *info)
13332 {
13333         struct cfg80211_registered_device *rdev = info->user_ptr[0];
13334         struct net_device *dev = info->user_ptr[1];
13335         struct wireless_dev *wdev = dev->ieee80211_ptr;
13336         const u8 *addr;
13337
13338         if (!rdev->ops->tdls_channel_switch ||
13339             !rdev->ops->tdls_cancel_channel_switch ||
13340             !(rdev->wiphy.features & NL80211_FEATURE_TDLS_CHANNEL_SWITCH))
13341                 return -EOPNOTSUPP;
13342
13343         switch (dev->ieee80211_ptr->iftype) {
13344         case NL80211_IFTYPE_STATION:
13345         case NL80211_IFTYPE_P2P_CLIENT:
13346                 break;
13347         default:
13348                 return -EOPNOTSUPP;
13349         }
13350
13351         if (!info->attrs[NL80211_ATTR_MAC])
13352                 return -EINVAL;
13353
13354         addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
13355
13356         wdev_lock(wdev);
13357         rdev_tdls_cancel_channel_switch(rdev, dev, addr);
13358         wdev_unlock(wdev);
13359
13360         return 0;
13361 }
13362
13363 static int nl80211_set_multicast_to_unicast(struct sk_buff *skb,
13364                                             struct genl_info *info)
13365 {
13366         struct cfg80211_registered_device *rdev = info->user_ptr[0];
13367         struct net_device *dev = info->user_ptr[1];
13368         struct wireless_dev *wdev = dev->ieee80211_ptr;
13369         const struct nlattr *nla;
13370         bool enabled;
13371
13372         if (!rdev->ops->set_multicast_to_unicast)
13373                 return -EOPNOTSUPP;
13374
13375         if (wdev->iftype != NL80211_IFTYPE_AP &&
13376             wdev->iftype != NL80211_IFTYPE_P2P_GO)
13377                 return -EOPNOTSUPP;
13378
13379         nla = info->attrs[NL80211_ATTR_MULTICAST_TO_UNICAST_ENABLED];
13380         enabled = nla_get_flag(nla);
13381
13382         return rdev_set_multicast_to_unicast(rdev, dev, enabled);
13383 }
13384
13385 static int nl80211_set_pmk(struct sk_buff *skb, struct genl_info *info)
13386 {
13387         struct cfg80211_registered_device *rdev = info->user_ptr[0];
13388         struct net_device *dev = info->user_ptr[1];
13389         struct wireless_dev *wdev = dev->ieee80211_ptr;
13390         struct cfg80211_pmk_conf pmk_conf = {};
13391         int ret;
13392
13393         if (wdev->iftype != NL80211_IFTYPE_STATION &&
13394             wdev->iftype != NL80211_IFTYPE_P2P_CLIENT)
13395                 return -EOPNOTSUPP;
13396
13397         if (!wiphy_ext_feature_isset(&rdev->wiphy,
13398                                      NL80211_EXT_FEATURE_4WAY_HANDSHAKE_STA_1X))
13399                 return -EOPNOTSUPP;
13400
13401         if (!info->attrs[NL80211_ATTR_MAC] || !info->attrs[NL80211_ATTR_PMK])
13402                 return -EINVAL;
13403
13404         wdev_lock(wdev);
13405         if (!wdev->current_bss) {
13406                 ret = -ENOTCONN;
13407                 goto out;
13408         }
13409
13410         pmk_conf.aa = nla_data(info->attrs[NL80211_ATTR_MAC]);
13411         if (memcmp(pmk_conf.aa, wdev->current_bss->pub.bssid, ETH_ALEN)) {
13412                 ret = -EINVAL;
13413                 goto out;
13414         }
13415
13416         pmk_conf.pmk = nla_data(info->attrs[NL80211_ATTR_PMK]);
13417         pmk_conf.pmk_len = nla_len(info->attrs[NL80211_ATTR_PMK]);
13418         if (pmk_conf.pmk_len != WLAN_PMK_LEN &&
13419             pmk_conf.pmk_len != WLAN_PMK_LEN_SUITE_B_192) {
13420                 ret = -EINVAL;
13421                 goto out;
13422         }
13423
13424         if (info->attrs[NL80211_ATTR_PMKR0_NAME]) {
13425                 int r0_name_len = nla_len(info->attrs[NL80211_ATTR_PMKR0_NAME]);
13426
13427                 if (r0_name_len != WLAN_PMK_NAME_LEN) {
13428                         ret = -EINVAL;
13429                         goto out;
13430                 }
13431
13432                 pmk_conf.pmk_r0_name =
13433                         nla_data(info->attrs[NL80211_ATTR_PMKR0_NAME]);
13434         }
13435
13436         ret = rdev_set_pmk(rdev, dev, &pmk_conf);
13437 out:
13438         wdev_unlock(wdev);
13439         return ret;
13440 }
13441
13442 static int nl80211_del_pmk(struct sk_buff *skb, struct genl_info *info)
13443 {
13444         struct cfg80211_registered_device *rdev = info->user_ptr[0];
13445         struct net_device *dev = info->user_ptr[1];
13446         struct wireless_dev *wdev = dev->ieee80211_ptr;
13447         const u8 *aa;
13448         int ret;
13449
13450         if (wdev->iftype != NL80211_IFTYPE_STATION &&
13451             wdev->iftype != NL80211_IFTYPE_P2P_CLIENT)
13452                 return -EOPNOTSUPP;
13453
13454         if (!wiphy_ext_feature_isset(&rdev->wiphy,
13455                                      NL80211_EXT_FEATURE_4WAY_HANDSHAKE_STA_1X))
13456                 return -EOPNOTSUPP;
13457
13458         if (!info->attrs[NL80211_ATTR_MAC])
13459                 return -EINVAL;
13460
13461         wdev_lock(wdev);
13462         aa = nla_data(info->attrs[NL80211_ATTR_MAC]);
13463         ret = rdev_del_pmk(rdev, dev, aa);
13464         wdev_unlock(wdev);
13465
13466         return ret;
13467 }
13468
13469 static int nl80211_external_auth(struct sk_buff *skb, struct genl_info *info)
13470 {
13471         struct cfg80211_registered_device *rdev = info->user_ptr[0];
13472         struct net_device *dev = info->user_ptr[1];
13473         struct cfg80211_external_auth_params params;
13474
13475         if (!rdev->ops->external_auth)
13476                 return -EOPNOTSUPP;
13477
13478         if (!info->attrs[NL80211_ATTR_SSID] &&
13479             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
13480             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
13481                 return -EINVAL;
13482
13483         if (!info->attrs[NL80211_ATTR_BSSID])
13484                 return -EINVAL;
13485
13486         if (!info->attrs[NL80211_ATTR_STATUS_CODE])
13487                 return -EINVAL;
13488
13489         memset(&params, 0, sizeof(params));
13490
13491         if (info->attrs[NL80211_ATTR_SSID]) {
13492                 params.ssid.ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
13493                 if (params.ssid.ssid_len == 0 ||
13494                     params.ssid.ssid_len > IEEE80211_MAX_SSID_LEN)
13495                         return -EINVAL;
13496                 memcpy(params.ssid.ssid,
13497                        nla_data(info->attrs[NL80211_ATTR_SSID]),
13498                        params.ssid.ssid_len);
13499         }
13500
13501         memcpy(params.bssid, nla_data(info->attrs[NL80211_ATTR_BSSID]),
13502                ETH_ALEN);
13503
13504         params.status = nla_get_u16(info->attrs[NL80211_ATTR_STATUS_CODE]);
13505
13506         if (info->attrs[NL80211_ATTR_PMKID])
13507                 params.pmkid = nla_data(info->attrs[NL80211_ATTR_PMKID]);
13508
13509         return rdev_external_auth(rdev, dev, &params);
13510 }
13511
13512 static int nl80211_tx_control_port(struct sk_buff *skb, struct genl_info *info)
13513 {
13514         struct cfg80211_registered_device *rdev = info->user_ptr[0];
13515         struct net_device *dev = info->user_ptr[1];
13516         struct wireless_dev *wdev = dev->ieee80211_ptr;
13517         const u8 *buf;
13518         size_t len;
13519         u8 *dest;
13520         u16 proto;
13521         bool noencrypt;
13522         int err;
13523
13524         if (!wiphy_ext_feature_isset(&rdev->wiphy,
13525                                      NL80211_EXT_FEATURE_CONTROL_PORT_OVER_NL80211))
13526                 return -EOPNOTSUPP;
13527
13528         if (!rdev->ops->tx_control_port)
13529                 return -EOPNOTSUPP;
13530
13531         if (!info->attrs[NL80211_ATTR_FRAME] ||
13532             !info->attrs[NL80211_ATTR_MAC] ||
13533             !info->attrs[NL80211_ATTR_CONTROL_PORT_ETHERTYPE]) {
13534                 GENL_SET_ERR_MSG(info, "Frame, MAC or ethertype missing");
13535                 return -EINVAL;
13536         }
13537
13538         wdev_lock(wdev);
13539
13540         switch (wdev->iftype) {
13541         case NL80211_IFTYPE_AP:
13542         case NL80211_IFTYPE_P2P_GO:
13543         case NL80211_IFTYPE_MESH_POINT:
13544                 break;
13545         case NL80211_IFTYPE_ADHOC:
13546         case NL80211_IFTYPE_STATION:
13547         case NL80211_IFTYPE_P2P_CLIENT:
13548                 if (wdev->current_bss)
13549                         break;
13550                 err = -ENOTCONN;
13551                 goto out;
13552         default:
13553                 err = -EOPNOTSUPP;
13554                 goto out;
13555         }
13556
13557         wdev_unlock(wdev);
13558
13559         buf = nla_data(info->attrs[NL80211_ATTR_FRAME]);
13560         len = nla_len(info->attrs[NL80211_ATTR_FRAME]);
13561         dest = nla_data(info->attrs[NL80211_ATTR_MAC]);
13562         proto = nla_get_u16(info->attrs[NL80211_ATTR_CONTROL_PORT_ETHERTYPE]);
13563         noencrypt =
13564                 nla_get_flag(info->attrs[NL80211_ATTR_CONTROL_PORT_NO_ENCRYPT]);
13565
13566         return rdev_tx_control_port(rdev, dev, buf, len,
13567                                     dest, cpu_to_be16(proto), noencrypt);
13568
13569  out:
13570         wdev_unlock(wdev);
13571         return err;
13572 }
13573
13574 static int nl80211_get_ftm_responder_stats(struct sk_buff *skb,
13575                                            struct genl_info *info)
13576 {
13577         struct cfg80211_registered_device *rdev = info->user_ptr[0];
13578         struct net_device *dev = info->user_ptr[1];
13579         struct wireless_dev *wdev = dev->ieee80211_ptr;
13580         struct cfg80211_ftm_responder_stats ftm_stats = {};
13581         struct sk_buff *msg;
13582         void *hdr;
13583         struct nlattr *ftm_stats_attr;
13584         int err;
13585
13586         if (wdev->iftype != NL80211_IFTYPE_AP || !wdev->beacon_interval)
13587                 return -EOPNOTSUPP;
13588
13589         err = rdev_get_ftm_responder_stats(rdev, dev, &ftm_stats);
13590         if (err)
13591                 return err;
13592
13593         if (!ftm_stats.filled)
13594                 return -ENODATA;
13595
13596         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
13597         if (!msg)
13598                 return -ENOMEM;
13599
13600         hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
13601                              NL80211_CMD_GET_FTM_RESPONDER_STATS);
13602         if (!hdr)
13603                 return -ENOBUFS;
13604
13605         if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex))
13606                 goto nla_put_failure;
13607
13608         ftm_stats_attr = nla_nest_start_noflag(msg,
13609                                                NL80211_ATTR_FTM_RESPONDER_STATS);
13610         if (!ftm_stats_attr)
13611                 goto nla_put_failure;
13612
13613 #define SET_FTM(field, name, type)                                       \
13614         do { if ((ftm_stats.filled & BIT(NL80211_FTM_STATS_ ## name)) && \
13615             nla_put_ ## type(msg, NL80211_FTM_STATS_ ## name,            \
13616                              ftm_stats.field))                           \
13617                 goto nla_put_failure; } while (0)
13618 #define SET_FTM_U64(field, name)                                         \
13619         do { if ((ftm_stats.filled & BIT(NL80211_FTM_STATS_ ## name)) && \
13620             nla_put_u64_64bit(msg, NL80211_FTM_STATS_ ## name,           \
13621                               ftm_stats.field, NL80211_FTM_STATS_PAD))   \
13622                 goto nla_put_failure; } while (0)
13623
13624         SET_FTM(success_num, SUCCESS_NUM, u32);
13625         SET_FTM(partial_num, PARTIAL_NUM, u32);
13626         SET_FTM(failed_num, FAILED_NUM, u32);
13627         SET_FTM(asap_num, ASAP_NUM, u32);
13628         SET_FTM(non_asap_num, NON_ASAP_NUM, u32);
13629         SET_FTM_U64(total_duration_ms, TOTAL_DURATION_MSEC);
13630         SET_FTM(unknown_triggers_num, UNKNOWN_TRIGGERS_NUM, u32);
13631         SET_FTM(reschedule_requests_num, RESCHEDULE_REQUESTS_NUM, u32);
13632         SET_FTM(out_of_window_triggers_num, OUT_OF_WINDOW_TRIGGERS_NUM, u32);
13633 #undef SET_FTM
13634
13635         nla_nest_end(msg, ftm_stats_attr);
13636
13637         genlmsg_end(msg, hdr);
13638         return genlmsg_reply(msg, info);
13639
13640 nla_put_failure:
13641         nlmsg_free(msg);
13642         return -ENOBUFS;
13643 }
13644
13645 static int nl80211_update_owe_info(struct sk_buff *skb, struct genl_info *info)
13646 {
13647         struct cfg80211_registered_device *rdev = info->user_ptr[0];
13648         struct cfg80211_update_owe_info owe_info;
13649         struct net_device *dev = info->user_ptr[1];
13650
13651         if (!rdev->ops->update_owe_info)
13652                 return -EOPNOTSUPP;
13653
13654         if (!info->attrs[NL80211_ATTR_STATUS_CODE] ||
13655             !info->attrs[NL80211_ATTR_MAC])
13656                 return -EINVAL;
13657
13658         memset(&owe_info, 0, sizeof(owe_info));
13659         owe_info.status = nla_get_u16(info->attrs[NL80211_ATTR_STATUS_CODE]);
13660         nla_memcpy(owe_info.peer, info->attrs[NL80211_ATTR_MAC], ETH_ALEN);
13661
13662         if (info->attrs[NL80211_ATTR_IE]) {
13663                 owe_info.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
13664                 owe_info.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
13665         }
13666
13667         return rdev_update_owe_info(rdev, dev, &owe_info);
13668 }
13669
13670 static int nl80211_probe_mesh_link(struct sk_buff *skb, struct genl_info *info)
13671 {
13672         struct cfg80211_registered_device *rdev = info->user_ptr[0];
13673         struct net_device *dev = info->user_ptr[1];
13674         struct wireless_dev *wdev = dev->ieee80211_ptr;
13675         struct station_info sinfo = {};
13676         const u8 *buf;
13677         size_t len;
13678         u8 *dest;
13679         int err;
13680
13681         if (!rdev->ops->probe_mesh_link || !rdev->ops->get_station)
13682                 return -EOPNOTSUPP;
13683
13684         if (!info->attrs[NL80211_ATTR_MAC] ||
13685             !info->attrs[NL80211_ATTR_FRAME]) {
13686                 GENL_SET_ERR_MSG(info, "Frame or MAC missing");
13687                 return -EINVAL;
13688         }
13689
13690         if (wdev->iftype != NL80211_IFTYPE_MESH_POINT)
13691                 return -EOPNOTSUPP;
13692
13693         dest = nla_data(info->attrs[NL80211_ATTR_MAC]);
13694         buf = nla_data(info->attrs[NL80211_ATTR_FRAME]);
13695         len = nla_len(info->attrs[NL80211_ATTR_FRAME]);
13696
13697         if (len < sizeof(struct ethhdr))
13698                 return -EINVAL;
13699
13700         if (!ether_addr_equal(buf, dest) || is_multicast_ether_addr(buf) ||
13701             !ether_addr_equal(buf + ETH_ALEN, dev->dev_addr))
13702                 return -EINVAL;
13703
13704         err = rdev_get_station(rdev, dev, dest, &sinfo);
13705         if (err)
13706                 return err;
13707
13708         return rdev_probe_mesh_link(rdev, dev, dest, buf, len);
13709 }
13710
13711 #define NL80211_FLAG_NEED_WIPHY         0x01
13712 #define NL80211_FLAG_NEED_NETDEV        0x02
13713 #define NL80211_FLAG_NEED_RTNL          0x04
13714 #define NL80211_FLAG_CHECK_NETDEV_UP    0x08
13715 #define NL80211_FLAG_NEED_NETDEV_UP     (NL80211_FLAG_NEED_NETDEV |\
13716                                          NL80211_FLAG_CHECK_NETDEV_UP)
13717 #define NL80211_FLAG_NEED_WDEV          0x10
13718 /* If a netdev is associated, it must be UP, P2P must be started */
13719 #define NL80211_FLAG_NEED_WDEV_UP       (NL80211_FLAG_NEED_WDEV |\
13720                                          NL80211_FLAG_CHECK_NETDEV_UP)
13721 #define NL80211_FLAG_CLEAR_SKB          0x20
13722
13723 static int nl80211_pre_doit(const struct genl_ops *ops, struct sk_buff *skb,
13724                             struct genl_info *info)
13725 {
13726         struct cfg80211_registered_device *rdev;
13727         struct wireless_dev *wdev;
13728         struct net_device *dev;
13729         bool rtnl = ops->internal_flags & NL80211_FLAG_NEED_RTNL;
13730
13731         if (rtnl)
13732                 rtnl_lock();
13733
13734         if (ops->internal_flags & NL80211_FLAG_NEED_WIPHY) {
13735                 rdev = cfg80211_get_dev_from_info(genl_info_net(info), info);
13736                 if (IS_ERR(rdev)) {
13737                         if (rtnl)
13738                                 rtnl_unlock();
13739                         return PTR_ERR(rdev);
13740                 }
13741                 info->user_ptr[0] = rdev;
13742         } else if (ops->internal_flags & NL80211_FLAG_NEED_NETDEV ||
13743                    ops->internal_flags & NL80211_FLAG_NEED_WDEV) {
13744                 ASSERT_RTNL();
13745
13746                 wdev = __cfg80211_wdev_from_attrs(genl_info_net(info),
13747                                                   info->attrs);
13748                 if (IS_ERR(wdev)) {
13749                         if (rtnl)
13750                                 rtnl_unlock();
13751                         return PTR_ERR(wdev);
13752                 }
13753
13754                 dev = wdev->netdev;
13755                 rdev = wiphy_to_rdev(wdev->wiphy);
13756
13757                 if (ops->internal_flags & NL80211_FLAG_NEED_NETDEV) {
13758                         if (!dev) {
13759                                 if (rtnl)
13760                                         rtnl_unlock();
13761                                 return -EINVAL;
13762                         }
13763
13764                         info->user_ptr[1] = dev;
13765                 } else {
13766                         info->user_ptr[1] = wdev;
13767                 }
13768
13769                 if (ops->internal_flags & NL80211_FLAG_CHECK_NETDEV_UP &&
13770                     !wdev_running(wdev)) {
13771                         if (rtnl)
13772                                 rtnl_unlock();
13773                         return -ENETDOWN;
13774                 }
13775
13776                 if (dev)
13777                         dev_hold(dev);
13778
13779                 info->user_ptr[0] = rdev;
13780         }
13781
13782         return 0;
13783 }
13784
13785 static void nl80211_post_doit(const struct genl_ops *ops, struct sk_buff *skb,
13786                               struct genl_info *info)
13787 {
13788         if (info->user_ptr[1]) {
13789                 if (ops->internal_flags & NL80211_FLAG_NEED_WDEV) {
13790                         struct wireless_dev *wdev = info->user_ptr[1];
13791
13792                         if (wdev->netdev)
13793                                 dev_put(wdev->netdev);
13794                 } else {
13795                         dev_put(info->user_ptr[1]);
13796                 }
13797         }
13798
13799         if (ops->internal_flags & NL80211_FLAG_NEED_RTNL)
13800                 rtnl_unlock();
13801
13802         /* If needed, clear the netlink message payload from the SKB
13803          * as it might contain key data that shouldn't stick around on
13804          * the heap after the SKB is freed. The netlink message header
13805          * is still needed for further processing, so leave it intact.
13806          */
13807         if (ops->internal_flags & NL80211_FLAG_CLEAR_SKB) {
13808                 struct nlmsghdr *nlh = nlmsg_hdr(skb);
13809
13810                 memset(nlmsg_data(nlh), 0, nlmsg_len(nlh));
13811         }
13812 }
13813
13814 static const struct genl_ops nl80211_ops[] = {
13815         {
13816                 .cmd = NL80211_CMD_GET_WIPHY,
13817                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
13818                 .doit = nl80211_get_wiphy,
13819                 .dumpit = nl80211_dump_wiphy,
13820                 .done = nl80211_dump_wiphy_done,
13821                 /* can be retrieved by unprivileged users */
13822                 .internal_flags = NL80211_FLAG_NEED_WIPHY |
13823                                   NL80211_FLAG_NEED_RTNL,
13824         },
13825         {
13826                 .cmd = NL80211_CMD_SET_WIPHY,
13827                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
13828                 .doit = nl80211_set_wiphy,
13829                 .flags = GENL_UNS_ADMIN_PERM,
13830                 .internal_flags = NL80211_FLAG_NEED_RTNL,
13831         },
13832         {
13833                 .cmd = NL80211_CMD_GET_INTERFACE,
13834                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
13835                 .doit = nl80211_get_interface,
13836                 .dumpit = nl80211_dump_interface,
13837                 /* can be retrieved by unprivileged users */
13838                 .internal_flags = NL80211_FLAG_NEED_WDEV |
13839                                   NL80211_FLAG_NEED_RTNL,
13840         },
13841         {
13842                 .cmd = NL80211_CMD_SET_INTERFACE,
13843                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
13844                 .doit = nl80211_set_interface,
13845                 .flags = GENL_UNS_ADMIN_PERM,
13846                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
13847                                   NL80211_FLAG_NEED_RTNL,
13848         },
13849         {
13850                 .cmd = NL80211_CMD_NEW_INTERFACE,
13851                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
13852                 .doit = nl80211_new_interface,
13853                 .flags = GENL_UNS_ADMIN_PERM,
13854                 .internal_flags = NL80211_FLAG_NEED_WIPHY |
13855                                   NL80211_FLAG_NEED_RTNL,
13856         },
13857         {
13858                 .cmd = NL80211_CMD_DEL_INTERFACE,
13859                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
13860                 .doit = nl80211_del_interface,
13861                 .flags = GENL_UNS_ADMIN_PERM,
13862                 .internal_flags = NL80211_FLAG_NEED_WDEV |
13863                                   NL80211_FLAG_NEED_RTNL,
13864         },
13865         {
13866                 .cmd = NL80211_CMD_GET_KEY,
13867                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
13868                 .doit = nl80211_get_key,
13869                 .flags = GENL_UNS_ADMIN_PERM,
13870                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
13871                                   NL80211_FLAG_NEED_RTNL,
13872         },
13873         {
13874                 .cmd = NL80211_CMD_SET_KEY,
13875                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
13876                 .doit = nl80211_set_key,
13877                 .flags = GENL_UNS_ADMIN_PERM,
13878                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
13879                                   NL80211_FLAG_NEED_RTNL |
13880                                   NL80211_FLAG_CLEAR_SKB,
13881         },
13882         {
13883                 .cmd = NL80211_CMD_NEW_KEY,
13884                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
13885                 .doit = nl80211_new_key,
13886                 .flags = GENL_UNS_ADMIN_PERM,
13887                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
13888                                   NL80211_FLAG_NEED_RTNL |
13889                                   NL80211_FLAG_CLEAR_SKB,
13890         },
13891         {
13892                 .cmd = NL80211_CMD_DEL_KEY,
13893                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
13894                 .doit = nl80211_del_key,
13895                 .flags = GENL_UNS_ADMIN_PERM,
13896                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
13897                                   NL80211_FLAG_NEED_RTNL,
13898         },
13899         {
13900                 .cmd = NL80211_CMD_SET_BEACON,
13901                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
13902                 .flags = GENL_UNS_ADMIN_PERM,
13903                 .doit = nl80211_set_beacon,
13904                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
13905                                   NL80211_FLAG_NEED_RTNL,
13906         },
13907         {
13908                 .cmd = NL80211_CMD_START_AP,
13909                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
13910                 .flags = GENL_UNS_ADMIN_PERM,
13911                 .doit = nl80211_start_ap,
13912                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
13913                                   NL80211_FLAG_NEED_RTNL,
13914         },
13915         {
13916                 .cmd = NL80211_CMD_STOP_AP,
13917                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
13918                 .flags = GENL_UNS_ADMIN_PERM,
13919                 .doit = nl80211_stop_ap,
13920                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
13921                                   NL80211_FLAG_NEED_RTNL,
13922         },
13923         {
13924                 .cmd = NL80211_CMD_GET_STATION,
13925                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
13926                 .doit = nl80211_get_station,
13927                 .dumpit = nl80211_dump_station,
13928                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
13929                                   NL80211_FLAG_NEED_RTNL,
13930         },
13931         {
13932                 .cmd = NL80211_CMD_SET_STATION,
13933                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
13934                 .doit = nl80211_set_station,
13935                 .flags = GENL_UNS_ADMIN_PERM,
13936                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
13937                                   NL80211_FLAG_NEED_RTNL,
13938         },
13939         {
13940                 .cmd = NL80211_CMD_NEW_STATION,
13941                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
13942                 .doit = nl80211_new_station,
13943                 .flags = GENL_UNS_ADMIN_PERM,
13944                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
13945                                   NL80211_FLAG_NEED_RTNL,
13946         },
13947         {
13948                 .cmd = NL80211_CMD_DEL_STATION,
13949                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
13950                 .doit = nl80211_del_station,
13951                 .flags = GENL_UNS_ADMIN_PERM,
13952                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
13953                                   NL80211_FLAG_NEED_RTNL,
13954         },
13955         {
13956                 .cmd = NL80211_CMD_GET_MPATH,
13957                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
13958                 .doit = nl80211_get_mpath,
13959                 .dumpit = nl80211_dump_mpath,
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_GET_MPP,
13966                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
13967                 .doit = nl80211_get_mpp,
13968                 .dumpit = nl80211_dump_mpp,
13969                 .flags = GENL_UNS_ADMIN_PERM,
13970                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
13971                                   NL80211_FLAG_NEED_RTNL,
13972         },
13973         {
13974                 .cmd = NL80211_CMD_SET_MPATH,
13975                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
13976                 .doit = nl80211_set_mpath,
13977                 .flags = GENL_UNS_ADMIN_PERM,
13978                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
13979                                   NL80211_FLAG_NEED_RTNL,
13980         },
13981         {
13982                 .cmd = NL80211_CMD_NEW_MPATH,
13983                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
13984                 .doit = nl80211_new_mpath,
13985                 .flags = GENL_UNS_ADMIN_PERM,
13986                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
13987                                   NL80211_FLAG_NEED_RTNL,
13988         },
13989         {
13990                 .cmd = NL80211_CMD_DEL_MPATH,
13991                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
13992                 .doit = nl80211_del_mpath,
13993                 .flags = GENL_UNS_ADMIN_PERM,
13994                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
13995                                   NL80211_FLAG_NEED_RTNL,
13996         },
13997         {
13998                 .cmd = NL80211_CMD_SET_BSS,
13999                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14000                 .doit = nl80211_set_bss,
14001                 .flags = GENL_UNS_ADMIN_PERM,
14002                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14003                                   NL80211_FLAG_NEED_RTNL,
14004         },
14005         {
14006                 .cmd = NL80211_CMD_GET_REG,
14007                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14008                 .doit = nl80211_get_reg_do,
14009                 .dumpit = nl80211_get_reg_dump,
14010                 .internal_flags = NL80211_FLAG_NEED_RTNL,
14011                 /* can be retrieved by unprivileged users */
14012         },
14013 #ifdef CONFIG_CFG80211_CRDA_SUPPORT
14014         {
14015                 .cmd = NL80211_CMD_SET_REG,
14016                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14017                 .doit = nl80211_set_reg,
14018                 .flags = GENL_ADMIN_PERM,
14019                 .internal_flags = NL80211_FLAG_NEED_RTNL,
14020         },
14021 #endif
14022         {
14023                 .cmd = NL80211_CMD_REQ_SET_REG,
14024                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14025                 .doit = nl80211_req_set_reg,
14026                 .flags = GENL_ADMIN_PERM,
14027         },
14028         {
14029                 .cmd = NL80211_CMD_RELOAD_REGDB,
14030                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14031                 .doit = nl80211_reload_regdb,
14032                 .flags = GENL_ADMIN_PERM,
14033         },
14034         {
14035                 .cmd = NL80211_CMD_GET_MESH_CONFIG,
14036                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14037                 .doit = nl80211_get_mesh_config,
14038                 /* can be retrieved by unprivileged users */
14039                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14040                                   NL80211_FLAG_NEED_RTNL,
14041         },
14042         {
14043                 .cmd = NL80211_CMD_SET_MESH_CONFIG,
14044                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14045                 .doit = nl80211_update_mesh_config,
14046                 .flags = GENL_UNS_ADMIN_PERM,
14047                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14048                                   NL80211_FLAG_NEED_RTNL,
14049         },
14050         {
14051                 .cmd = NL80211_CMD_TRIGGER_SCAN,
14052                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14053                 .doit = nl80211_trigger_scan,
14054                 .flags = GENL_UNS_ADMIN_PERM,
14055                 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
14056                                   NL80211_FLAG_NEED_RTNL,
14057         },
14058         {
14059                 .cmd = NL80211_CMD_ABORT_SCAN,
14060                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14061                 .doit = nl80211_abort_scan,
14062                 .flags = GENL_UNS_ADMIN_PERM,
14063                 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
14064                                   NL80211_FLAG_NEED_RTNL,
14065         },
14066         {
14067                 .cmd = NL80211_CMD_GET_SCAN,
14068                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14069                 .dumpit = nl80211_dump_scan,
14070         },
14071         {
14072                 .cmd = NL80211_CMD_START_SCHED_SCAN,
14073                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14074                 .doit = nl80211_start_sched_scan,
14075                 .flags = GENL_UNS_ADMIN_PERM,
14076                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14077                                   NL80211_FLAG_NEED_RTNL,
14078         },
14079         {
14080                 .cmd = NL80211_CMD_STOP_SCHED_SCAN,
14081                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14082                 .doit = nl80211_stop_sched_scan,
14083                 .flags = GENL_UNS_ADMIN_PERM,
14084                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14085                                   NL80211_FLAG_NEED_RTNL,
14086         },
14087         {
14088                 .cmd = NL80211_CMD_AUTHENTICATE,
14089                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14090                 .doit = nl80211_authenticate,
14091                 .flags = GENL_UNS_ADMIN_PERM,
14092                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14093                                   NL80211_FLAG_NEED_RTNL |
14094                                   NL80211_FLAG_CLEAR_SKB,
14095         },
14096         {
14097                 .cmd = NL80211_CMD_ASSOCIATE,
14098                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14099                 .doit = nl80211_associate,
14100                 .flags = GENL_UNS_ADMIN_PERM,
14101                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14102                                   NL80211_FLAG_NEED_RTNL |
14103                                   NL80211_FLAG_CLEAR_SKB,
14104         },
14105         {
14106                 .cmd = NL80211_CMD_DEAUTHENTICATE,
14107                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14108                 .doit = nl80211_deauthenticate,
14109                 .flags = GENL_UNS_ADMIN_PERM,
14110                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14111                                   NL80211_FLAG_NEED_RTNL,
14112         },
14113         {
14114                 .cmd = NL80211_CMD_DISASSOCIATE,
14115                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14116                 .doit = nl80211_disassociate,
14117                 .flags = GENL_UNS_ADMIN_PERM,
14118                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14119                                   NL80211_FLAG_NEED_RTNL,
14120         },
14121         {
14122                 .cmd = NL80211_CMD_JOIN_IBSS,
14123                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14124                 .doit = nl80211_join_ibss,
14125                 .flags = GENL_UNS_ADMIN_PERM,
14126                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14127                                   NL80211_FLAG_NEED_RTNL,
14128         },
14129         {
14130                 .cmd = NL80211_CMD_LEAVE_IBSS,
14131                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14132                 .doit = nl80211_leave_ibss,
14133                 .flags = GENL_UNS_ADMIN_PERM,
14134                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14135                                   NL80211_FLAG_NEED_RTNL,
14136         },
14137 #ifdef CONFIG_NL80211_TESTMODE
14138         {
14139                 .cmd = NL80211_CMD_TESTMODE,
14140                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14141                 .doit = nl80211_testmode_do,
14142                 .dumpit = nl80211_testmode_dump,
14143                 .flags = GENL_UNS_ADMIN_PERM,
14144                 .internal_flags = NL80211_FLAG_NEED_WIPHY |
14145                                   NL80211_FLAG_NEED_RTNL,
14146         },
14147 #endif
14148         {
14149                 .cmd = NL80211_CMD_CONNECT,
14150                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14151                 .doit = nl80211_connect,
14152                 .flags = GENL_UNS_ADMIN_PERM,
14153                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14154                                   NL80211_FLAG_NEED_RTNL |
14155                                   NL80211_FLAG_CLEAR_SKB,
14156         },
14157         {
14158                 .cmd = NL80211_CMD_UPDATE_CONNECT_PARAMS,
14159                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14160                 .doit = nl80211_update_connect_params,
14161                 .flags = GENL_ADMIN_PERM,
14162                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14163                                   NL80211_FLAG_NEED_RTNL |
14164                                   NL80211_FLAG_CLEAR_SKB,
14165         },
14166         {
14167                 .cmd = NL80211_CMD_DISCONNECT,
14168                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14169                 .doit = nl80211_disconnect,
14170                 .flags = GENL_UNS_ADMIN_PERM,
14171                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14172                                   NL80211_FLAG_NEED_RTNL,
14173         },
14174         {
14175                 .cmd = NL80211_CMD_SET_WIPHY_NETNS,
14176                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14177                 .doit = nl80211_wiphy_netns,
14178                 .flags = GENL_UNS_ADMIN_PERM,
14179                 .internal_flags = NL80211_FLAG_NEED_WIPHY |
14180                                   NL80211_FLAG_NEED_RTNL,
14181         },
14182         {
14183                 .cmd = NL80211_CMD_GET_SURVEY,
14184                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14185                 .dumpit = nl80211_dump_survey,
14186         },
14187         {
14188                 .cmd = NL80211_CMD_SET_PMKSA,
14189                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14190                 .doit = nl80211_setdel_pmksa,
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_DEL_PMKSA,
14198                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14199                 .doit = nl80211_setdel_pmksa,
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_FLUSH_PMKSA,
14206                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14207                 .doit = nl80211_flush_pmksa,
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_REMAIN_ON_CHANNEL,
14214                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14215                 .doit = nl80211_remain_on_channel,
14216                 .flags = GENL_UNS_ADMIN_PERM,
14217                 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
14218                                   NL80211_FLAG_NEED_RTNL,
14219         },
14220         {
14221                 .cmd = NL80211_CMD_CANCEL_REMAIN_ON_CHANNEL,
14222                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14223                 .doit = nl80211_cancel_remain_on_channel,
14224                 .flags = GENL_UNS_ADMIN_PERM,
14225                 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
14226                                   NL80211_FLAG_NEED_RTNL,
14227         },
14228         {
14229                 .cmd = NL80211_CMD_SET_TX_BITRATE_MASK,
14230                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14231                 .doit = nl80211_set_tx_bitrate_mask,
14232                 .flags = GENL_UNS_ADMIN_PERM,
14233                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
14234                                   NL80211_FLAG_NEED_RTNL,
14235         },
14236         {
14237                 .cmd = NL80211_CMD_REGISTER_FRAME,
14238                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14239                 .doit = nl80211_register_mgmt,
14240                 .flags = GENL_UNS_ADMIN_PERM,
14241                 .internal_flags = NL80211_FLAG_NEED_WDEV |
14242                                   NL80211_FLAG_NEED_RTNL,
14243         },
14244         {
14245                 .cmd = NL80211_CMD_FRAME,
14246                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14247                 .doit = nl80211_tx_mgmt,
14248                 .flags = GENL_UNS_ADMIN_PERM,
14249                 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
14250                                   NL80211_FLAG_NEED_RTNL,
14251         },
14252         {
14253                 .cmd = NL80211_CMD_FRAME_WAIT_CANCEL,
14254                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14255                 .doit = nl80211_tx_mgmt_cancel_wait,
14256                 .flags = GENL_UNS_ADMIN_PERM,
14257                 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
14258                                   NL80211_FLAG_NEED_RTNL,
14259         },
14260         {
14261                 .cmd = NL80211_CMD_SET_POWER_SAVE,
14262                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14263                 .doit = nl80211_set_power_save,
14264                 .flags = GENL_UNS_ADMIN_PERM,
14265                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
14266                                   NL80211_FLAG_NEED_RTNL,
14267         },
14268         {
14269                 .cmd = NL80211_CMD_GET_POWER_SAVE,
14270                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14271                 .doit = nl80211_get_power_save,
14272                 /* can be retrieved by unprivileged users */
14273                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
14274                                   NL80211_FLAG_NEED_RTNL,
14275         },
14276         {
14277                 .cmd = NL80211_CMD_SET_CQM,
14278                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14279                 .doit = nl80211_set_cqm,
14280                 .flags = GENL_UNS_ADMIN_PERM,
14281                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
14282                                   NL80211_FLAG_NEED_RTNL,
14283         },
14284         {
14285                 .cmd = NL80211_CMD_SET_CHANNEL,
14286                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14287                 .doit = nl80211_set_channel,
14288                 .flags = GENL_UNS_ADMIN_PERM,
14289                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
14290                                   NL80211_FLAG_NEED_RTNL,
14291         },
14292         {
14293                 .cmd = NL80211_CMD_SET_WDS_PEER,
14294                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14295                 .doit = nl80211_set_wds_peer,
14296                 .flags = GENL_UNS_ADMIN_PERM,
14297                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
14298                                   NL80211_FLAG_NEED_RTNL,
14299         },
14300         {
14301                 .cmd = NL80211_CMD_JOIN_MESH,
14302                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14303                 .doit = nl80211_join_mesh,
14304                 .flags = GENL_UNS_ADMIN_PERM,
14305                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14306                                   NL80211_FLAG_NEED_RTNL,
14307         },
14308         {
14309                 .cmd = NL80211_CMD_LEAVE_MESH,
14310                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14311                 .doit = nl80211_leave_mesh,
14312                 .flags = GENL_UNS_ADMIN_PERM,
14313                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14314                                   NL80211_FLAG_NEED_RTNL,
14315         },
14316         {
14317                 .cmd = NL80211_CMD_JOIN_OCB,
14318                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14319                 .doit = nl80211_join_ocb,
14320                 .flags = GENL_UNS_ADMIN_PERM,
14321                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14322                                   NL80211_FLAG_NEED_RTNL,
14323         },
14324         {
14325                 .cmd = NL80211_CMD_LEAVE_OCB,
14326                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14327                 .doit = nl80211_leave_ocb,
14328                 .flags = GENL_UNS_ADMIN_PERM,
14329                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14330                                   NL80211_FLAG_NEED_RTNL,
14331         },
14332 #ifdef CONFIG_PM
14333         {
14334                 .cmd = NL80211_CMD_GET_WOWLAN,
14335                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14336                 .doit = nl80211_get_wowlan,
14337                 /* can be retrieved by unprivileged users */
14338                 .internal_flags = NL80211_FLAG_NEED_WIPHY |
14339                                   NL80211_FLAG_NEED_RTNL,
14340         },
14341         {
14342                 .cmd = NL80211_CMD_SET_WOWLAN,
14343                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14344                 .doit = nl80211_set_wowlan,
14345                 .flags = GENL_UNS_ADMIN_PERM,
14346                 .internal_flags = NL80211_FLAG_NEED_WIPHY |
14347                                   NL80211_FLAG_NEED_RTNL,
14348         },
14349 #endif
14350         {
14351                 .cmd = NL80211_CMD_SET_REKEY_OFFLOAD,
14352                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14353                 .doit = nl80211_set_rekey_data,
14354                 .flags = GENL_UNS_ADMIN_PERM,
14355                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14356                                   NL80211_FLAG_NEED_RTNL |
14357                                   NL80211_FLAG_CLEAR_SKB,
14358         },
14359         {
14360                 .cmd = NL80211_CMD_TDLS_MGMT,
14361                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14362                 .doit = nl80211_tdls_mgmt,
14363                 .flags = GENL_UNS_ADMIN_PERM,
14364                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14365                                   NL80211_FLAG_NEED_RTNL,
14366         },
14367         {
14368                 .cmd = NL80211_CMD_TDLS_OPER,
14369                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14370                 .doit = nl80211_tdls_oper,
14371                 .flags = GENL_UNS_ADMIN_PERM,
14372                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14373                                   NL80211_FLAG_NEED_RTNL,
14374         },
14375         {
14376                 .cmd = NL80211_CMD_UNEXPECTED_FRAME,
14377                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14378                 .doit = nl80211_register_unexpected_frame,
14379                 .flags = GENL_UNS_ADMIN_PERM,
14380                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
14381                                   NL80211_FLAG_NEED_RTNL,
14382         },
14383         {
14384                 .cmd = NL80211_CMD_PROBE_CLIENT,
14385                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14386                 .doit = nl80211_probe_client,
14387                 .flags = GENL_UNS_ADMIN_PERM,
14388                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14389                                   NL80211_FLAG_NEED_RTNL,
14390         },
14391         {
14392                 .cmd = NL80211_CMD_REGISTER_BEACONS,
14393                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14394                 .doit = nl80211_register_beacons,
14395                 .flags = GENL_UNS_ADMIN_PERM,
14396                 .internal_flags = NL80211_FLAG_NEED_WIPHY |
14397                                   NL80211_FLAG_NEED_RTNL,
14398         },
14399         {
14400                 .cmd = NL80211_CMD_SET_NOACK_MAP,
14401                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14402                 .doit = nl80211_set_noack_map,
14403                 .flags = GENL_UNS_ADMIN_PERM,
14404                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
14405                                   NL80211_FLAG_NEED_RTNL,
14406         },
14407         {
14408                 .cmd = NL80211_CMD_START_P2P_DEVICE,
14409                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14410                 .doit = nl80211_start_p2p_device,
14411                 .flags = GENL_UNS_ADMIN_PERM,
14412                 .internal_flags = NL80211_FLAG_NEED_WDEV |
14413                                   NL80211_FLAG_NEED_RTNL,
14414         },
14415         {
14416                 .cmd = NL80211_CMD_STOP_P2P_DEVICE,
14417                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14418                 .doit = nl80211_stop_p2p_device,
14419                 .flags = GENL_UNS_ADMIN_PERM,
14420                 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
14421                                   NL80211_FLAG_NEED_RTNL,
14422         },
14423         {
14424                 .cmd = NL80211_CMD_START_NAN,
14425                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14426                 .doit = nl80211_start_nan,
14427                 .flags = GENL_ADMIN_PERM,
14428                 .internal_flags = NL80211_FLAG_NEED_WDEV |
14429                                   NL80211_FLAG_NEED_RTNL,
14430         },
14431         {
14432                 .cmd = NL80211_CMD_STOP_NAN,
14433                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14434                 .doit = nl80211_stop_nan,
14435                 .flags = GENL_ADMIN_PERM,
14436                 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
14437                                   NL80211_FLAG_NEED_RTNL,
14438         },
14439         {
14440                 .cmd = NL80211_CMD_ADD_NAN_FUNCTION,
14441                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14442                 .doit = nl80211_nan_add_func,
14443                 .flags = GENL_ADMIN_PERM,
14444                 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
14445                                   NL80211_FLAG_NEED_RTNL,
14446         },
14447         {
14448                 .cmd = NL80211_CMD_DEL_NAN_FUNCTION,
14449                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14450                 .doit = nl80211_nan_del_func,
14451                 .flags = GENL_ADMIN_PERM,
14452                 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
14453                                   NL80211_FLAG_NEED_RTNL,
14454         },
14455         {
14456                 .cmd = NL80211_CMD_CHANGE_NAN_CONFIG,
14457                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14458                 .doit = nl80211_nan_change_config,
14459                 .flags = GENL_ADMIN_PERM,
14460                 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
14461                                   NL80211_FLAG_NEED_RTNL,
14462         },
14463         {
14464                 .cmd = NL80211_CMD_SET_MCAST_RATE,
14465                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14466                 .doit = nl80211_set_mcast_rate,
14467                 .flags = GENL_UNS_ADMIN_PERM,
14468                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
14469                                   NL80211_FLAG_NEED_RTNL,
14470         },
14471         {
14472                 .cmd = NL80211_CMD_SET_MAC_ACL,
14473                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14474                 .doit = nl80211_set_mac_acl,
14475                 .flags = GENL_UNS_ADMIN_PERM,
14476                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
14477                                   NL80211_FLAG_NEED_RTNL,
14478         },
14479         {
14480                 .cmd = NL80211_CMD_RADAR_DETECT,
14481                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14482                 .doit = nl80211_start_radar_detection,
14483                 .flags = GENL_UNS_ADMIN_PERM,
14484                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14485                                   NL80211_FLAG_NEED_RTNL,
14486         },
14487         {
14488                 .cmd = NL80211_CMD_GET_PROTOCOL_FEATURES,
14489                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14490                 .doit = nl80211_get_protocol_features,
14491         },
14492         {
14493                 .cmd = NL80211_CMD_UPDATE_FT_IES,
14494                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14495                 .doit = nl80211_update_ft_ies,
14496                 .flags = GENL_UNS_ADMIN_PERM,
14497                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14498                                   NL80211_FLAG_NEED_RTNL,
14499         },
14500         {
14501                 .cmd = NL80211_CMD_CRIT_PROTOCOL_START,
14502                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14503                 .doit = nl80211_crit_protocol_start,
14504                 .flags = GENL_UNS_ADMIN_PERM,
14505                 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
14506                                   NL80211_FLAG_NEED_RTNL,
14507         },
14508         {
14509                 .cmd = NL80211_CMD_CRIT_PROTOCOL_STOP,
14510                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14511                 .doit = nl80211_crit_protocol_stop,
14512                 .flags = GENL_UNS_ADMIN_PERM,
14513                 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
14514                                   NL80211_FLAG_NEED_RTNL,
14515         },
14516         {
14517                 .cmd = NL80211_CMD_GET_COALESCE,
14518                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14519                 .doit = nl80211_get_coalesce,
14520                 .internal_flags = NL80211_FLAG_NEED_WIPHY |
14521                                   NL80211_FLAG_NEED_RTNL,
14522         },
14523         {
14524                 .cmd = NL80211_CMD_SET_COALESCE,
14525                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14526                 .doit = nl80211_set_coalesce,
14527                 .flags = GENL_UNS_ADMIN_PERM,
14528                 .internal_flags = NL80211_FLAG_NEED_WIPHY |
14529                                   NL80211_FLAG_NEED_RTNL,
14530         },
14531         {
14532                 .cmd = NL80211_CMD_CHANNEL_SWITCH,
14533                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14534                 .doit = nl80211_channel_switch,
14535                 .flags = GENL_UNS_ADMIN_PERM,
14536                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14537                                   NL80211_FLAG_NEED_RTNL,
14538         },
14539         {
14540                 .cmd = NL80211_CMD_VENDOR,
14541                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14542                 .doit = nl80211_vendor_cmd,
14543                 .dumpit = nl80211_vendor_cmd_dump,
14544                 .flags = GENL_UNS_ADMIN_PERM,
14545                 .internal_flags = NL80211_FLAG_NEED_WIPHY |
14546                                   NL80211_FLAG_NEED_RTNL |
14547                                   NL80211_FLAG_CLEAR_SKB,
14548         },
14549         {
14550                 .cmd = NL80211_CMD_SET_QOS_MAP,
14551                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14552                 .doit = nl80211_set_qos_map,
14553                 .flags = GENL_UNS_ADMIN_PERM,
14554                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14555                                   NL80211_FLAG_NEED_RTNL,
14556         },
14557         {
14558                 .cmd = NL80211_CMD_ADD_TX_TS,
14559                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14560                 .doit = nl80211_add_tx_ts,
14561                 .flags = GENL_UNS_ADMIN_PERM,
14562                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14563                                   NL80211_FLAG_NEED_RTNL,
14564         },
14565         {
14566                 .cmd = NL80211_CMD_DEL_TX_TS,
14567                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14568                 .doit = nl80211_del_tx_ts,
14569                 .flags = GENL_UNS_ADMIN_PERM,
14570                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14571                                   NL80211_FLAG_NEED_RTNL,
14572         },
14573         {
14574                 .cmd = NL80211_CMD_TDLS_CHANNEL_SWITCH,
14575                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14576                 .doit = nl80211_tdls_channel_switch,
14577                 .flags = GENL_UNS_ADMIN_PERM,
14578                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14579                                   NL80211_FLAG_NEED_RTNL,
14580         },
14581         {
14582                 .cmd = NL80211_CMD_TDLS_CANCEL_CHANNEL_SWITCH,
14583                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14584                 .doit = nl80211_tdls_cancel_channel_switch,
14585                 .flags = GENL_UNS_ADMIN_PERM,
14586                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14587                                   NL80211_FLAG_NEED_RTNL,
14588         },
14589         {
14590                 .cmd = NL80211_CMD_SET_MULTICAST_TO_UNICAST,
14591                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14592                 .doit = nl80211_set_multicast_to_unicast,
14593                 .flags = GENL_UNS_ADMIN_PERM,
14594                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
14595                                   NL80211_FLAG_NEED_RTNL,
14596         },
14597         {
14598                 .cmd = NL80211_CMD_SET_PMK,
14599                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14600                 .doit = nl80211_set_pmk,
14601                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14602                                   NL80211_FLAG_NEED_RTNL |
14603                                   NL80211_FLAG_CLEAR_SKB,
14604         },
14605         {
14606                 .cmd = NL80211_CMD_DEL_PMK,
14607                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14608                 .doit = nl80211_del_pmk,
14609                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14610                                   NL80211_FLAG_NEED_RTNL,
14611         },
14612         {
14613                 .cmd = NL80211_CMD_EXTERNAL_AUTH,
14614                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14615                 .doit = nl80211_external_auth,
14616                 .flags = GENL_ADMIN_PERM,
14617                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14618                                   NL80211_FLAG_NEED_RTNL,
14619         },
14620         {
14621                 .cmd = NL80211_CMD_CONTROL_PORT_FRAME,
14622                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14623                 .doit = nl80211_tx_control_port,
14624                 .flags = GENL_UNS_ADMIN_PERM,
14625                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14626                                   NL80211_FLAG_NEED_RTNL,
14627         },
14628         {
14629                 .cmd = NL80211_CMD_GET_FTM_RESPONDER_STATS,
14630                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14631                 .doit = nl80211_get_ftm_responder_stats,
14632                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
14633                                   NL80211_FLAG_NEED_RTNL,
14634         },
14635         {
14636                 .cmd = NL80211_CMD_PEER_MEASUREMENT_START,
14637                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14638                 .doit = nl80211_pmsr_start,
14639                 .flags = GENL_UNS_ADMIN_PERM,
14640                 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
14641                                   NL80211_FLAG_NEED_RTNL,
14642         },
14643         {
14644                 .cmd = NL80211_CMD_NOTIFY_RADAR,
14645                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14646                 .doit = nl80211_notify_radar_detection,
14647                 .flags = GENL_UNS_ADMIN_PERM,
14648                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14649                                   NL80211_FLAG_NEED_RTNL,
14650         },
14651         {
14652                 .cmd = NL80211_CMD_UPDATE_OWE_INFO,
14653                 .doit = nl80211_update_owe_info,
14654                 .flags = GENL_ADMIN_PERM,
14655                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14656                                   NL80211_FLAG_NEED_RTNL,
14657         },
14658         {
14659                 .cmd = NL80211_CMD_PROBE_MESH_LINK,
14660                 .doit = nl80211_probe_mesh_link,
14661                 .flags = GENL_UNS_ADMIN_PERM,
14662                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14663                                   NL80211_FLAG_NEED_RTNL,
14664         },
14665 };
14666
14667 static struct genl_family nl80211_fam __ro_after_init = {
14668         .name = NL80211_GENL_NAME,      /* have users key off the name instead */
14669         .hdrsize = 0,                   /* no private header */
14670         .version = 1,                   /* no particular meaning now */
14671         .maxattr = NL80211_ATTR_MAX,
14672         .policy = nl80211_policy,
14673         .netnsok = true,
14674         .pre_doit = nl80211_pre_doit,
14675         .post_doit = nl80211_post_doit,
14676         .module = THIS_MODULE,
14677         .ops = nl80211_ops,
14678         .n_ops = ARRAY_SIZE(nl80211_ops),
14679         .mcgrps = nl80211_mcgrps,
14680         .n_mcgrps = ARRAY_SIZE(nl80211_mcgrps),
14681         .parallel_ops = true,
14682 };
14683
14684 /* notification functions */
14685
14686 void nl80211_notify_wiphy(struct cfg80211_registered_device *rdev,
14687                           enum nl80211_commands cmd)
14688 {
14689         struct sk_buff *msg;
14690         struct nl80211_dump_wiphy_state state = {};
14691
14692         WARN_ON(cmd != NL80211_CMD_NEW_WIPHY &&
14693                 cmd != NL80211_CMD_DEL_WIPHY);
14694
14695         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
14696         if (!msg)
14697                 return;
14698
14699         if (nl80211_send_wiphy(rdev, cmd, msg, 0, 0, 0, &state) < 0) {
14700                 nlmsg_free(msg);
14701                 return;
14702         }
14703
14704         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
14705                                 NL80211_MCGRP_CONFIG, GFP_KERNEL);
14706 }
14707
14708 void nl80211_notify_iface(struct cfg80211_registered_device *rdev,
14709                                 struct wireless_dev *wdev,
14710                                 enum nl80211_commands cmd)
14711 {
14712         struct sk_buff *msg;
14713
14714         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
14715         if (!msg)
14716                 return;
14717
14718         if (nl80211_send_iface(msg, 0, 0, 0, rdev, wdev, cmd) < 0) {
14719                 nlmsg_free(msg);
14720                 return;
14721         }
14722
14723         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
14724                                 NL80211_MCGRP_CONFIG, GFP_KERNEL);
14725 }
14726
14727 static int nl80211_add_scan_req(struct sk_buff *msg,
14728                                 struct cfg80211_registered_device *rdev)
14729 {
14730         struct cfg80211_scan_request *req = rdev->scan_req;
14731         struct nlattr *nest;
14732         int i;
14733
14734         if (WARN_ON(!req))
14735                 return 0;
14736
14737         nest = nla_nest_start_noflag(msg, NL80211_ATTR_SCAN_SSIDS);
14738         if (!nest)
14739                 goto nla_put_failure;
14740         for (i = 0; i < req->n_ssids; i++) {
14741                 if (nla_put(msg, i, req->ssids[i].ssid_len, req->ssids[i].ssid))
14742                         goto nla_put_failure;
14743         }
14744         nla_nest_end(msg, nest);
14745
14746         nest = nla_nest_start_noflag(msg, NL80211_ATTR_SCAN_FREQUENCIES);
14747         if (!nest)
14748                 goto nla_put_failure;
14749         for (i = 0; i < req->n_channels; i++) {
14750                 if (nla_put_u32(msg, i, req->channels[i]->center_freq))
14751                         goto nla_put_failure;
14752         }
14753         nla_nest_end(msg, nest);
14754
14755         if (req->ie &&
14756             nla_put(msg, NL80211_ATTR_IE, req->ie_len, req->ie))
14757                 goto nla_put_failure;
14758
14759         if (req->flags &&
14760             nla_put_u32(msg, NL80211_ATTR_SCAN_FLAGS, req->flags))
14761                 goto nla_put_failure;
14762
14763         if (req->info.scan_start_tsf &&
14764             (nla_put_u64_64bit(msg, NL80211_ATTR_SCAN_START_TIME_TSF,
14765                                req->info.scan_start_tsf, NL80211_BSS_PAD) ||
14766              nla_put(msg, NL80211_ATTR_SCAN_START_TIME_TSF_BSSID, ETH_ALEN,
14767                      req->info.tsf_bssid)))
14768                 goto nla_put_failure;
14769
14770         return 0;
14771  nla_put_failure:
14772         return -ENOBUFS;
14773 }
14774
14775 static int nl80211_prep_scan_msg(struct sk_buff *msg,
14776                                  struct cfg80211_registered_device *rdev,
14777                                  struct wireless_dev *wdev,
14778                                  u32 portid, u32 seq, int flags,
14779                                  u32 cmd)
14780 {
14781         void *hdr;
14782
14783         hdr = nl80211hdr_put(msg, portid, seq, flags, cmd);
14784         if (!hdr)
14785                 return -1;
14786
14787         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
14788             (wdev->netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
14789                                          wdev->netdev->ifindex)) ||
14790             nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
14791                               NL80211_ATTR_PAD))
14792                 goto nla_put_failure;
14793
14794         /* ignore errors and send incomplete event anyway */
14795         nl80211_add_scan_req(msg, rdev);
14796
14797         genlmsg_end(msg, hdr);
14798         return 0;
14799
14800  nla_put_failure:
14801         genlmsg_cancel(msg, hdr);
14802         return -EMSGSIZE;
14803 }
14804
14805 static int
14806 nl80211_prep_sched_scan_msg(struct sk_buff *msg,
14807                             struct cfg80211_sched_scan_request *req, u32 cmd)
14808 {
14809         void *hdr;
14810
14811         hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
14812         if (!hdr)
14813                 return -1;
14814
14815         if (nla_put_u32(msg, NL80211_ATTR_WIPHY,
14816                         wiphy_to_rdev(req->wiphy)->wiphy_idx) ||
14817             nla_put_u32(msg, NL80211_ATTR_IFINDEX, req->dev->ifindex) ||
14818             nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, req->reqid,
14819                               NL80211_ATTR_PAD))
14820                 goto nla_put_failure;
14821
14822         genlmsg_end(msg, hdr);
14823         return 0;
14824
14825  nla_put_failure:
14826         genlmsg_cancel(msg, hdr);
14827         return -EMSGSIZE;
14828 }
14829
14830 void nl80211_send_scan_start(struct cfg80211_registered_device *rdev,
14831                              struct wireless_dev *wdev)
14832 {
14833         struct sk_buff *msg;
14834
14835         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
14836         if (!msg)
14837                 return;
14838
14839         if (nl80211_prep_scan_msg(msg, rdev, wdev, 0, 0, 0,
14840                                   NL80211_CMD_TRIGGER_SCAN) < 0) {
14841                 nlmsg_free(msg);
14842                 return;
14843         }
14844
14845         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
14846                                 NL80211_MCGRP_SCAN, GFP_KERNEL);
14847 }
14848
14849 struct sk_buff *nl80211_build_scan_msg(struct cfg80211_registered_device *rdev,
14850                                        struct wireless_dev *wdev, bool aborted)
14851 {
14852         struct sk_buff *msg;
14853
14854         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
14855         if (!msg)
14856                 return NULL;
14857
14858         if (nl80211_prep_scan_msg(msg, rdev, wdev, 0, 0, 0,
14859                                   aborted ? NL80211_CMD_SCAN_ABORTED :
14860                                             NL80211_CMD_NEW_SCAN_RESULTS) < 0) {
14861                 nlmsg_free(msg);
14862                 return NULL;
14863         }
14864
14865         return msg;
14866 }
14867
14868 /* send message created by nl80211_build_scan_msg() */
14869 void nl80211_send_scan_msg(struct cfg80211_registered_device *rdev,
14870                            struct sk_buff *msg)
14871 {
14872         if (!msg)
14873                 return;
14874
14875         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
14876                                 NL80211_MCGRP_SCAN, GFP_KERNEL);
14877 }
14878
14879 void nl80211_send_sched_scan(struct cfg80211_sched_scan_request *req, u32 cmd)
14880 {
14881         struct sk_buff *msg;
14882
14883         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
14884         if (!msg)
14885                 return;
14886
14887         if (nl80211_prep_sched_scan_msg(msg, req, cmd) < 0) {
14888                 nlmsg_free(msg);
14889                 return;
14890         }
14891
14892         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(req->wiphy), msg, 0,
14893                                 NL80211_MCGRP_SCAN, GFP_KERNEL);
14894 }
14895
14896 static bool nl80211_reg_change_event_fill(struct sk_buff *msg,
14897                                           struct regulatory_request *request)
14898 {
14899         /* Userspace can always count this one always being set */
14900         if (nla_put_u8(msg, NL80211_ATTR_REG_INITIATOR, request->initiator))
14901                 goto nla_put_failure;
14902
14903         if (request->alpha2[0] == '0' && request->alpha2[1] == '0') {
14904                 if (nla_put_u8(msg, NL80211_ATTR_REG_TYPE,
14905                                NL80211_REGDOM_TYPE_WORLD))
14906                         goto nla_put_failure;
14907         } else if (request->alpha2[0] == '9' && request->alpha2[1] == '9') {
14908                 if (nla_put_u8(msg, NL80211_ATTR_REG_TYPE,
14909                                NL80211_REGDOM_TYPE_CUSTOM_WORLD))
14910                         goto nla_put_failure;
14911         } else if ((request->alpha2[0] == '9' && request->alpha2[1] == '8') ||
14912                    request->intersect) {
14913                 if (nla_put_u8(msg, NL80211_ATTR_REG_TYPE,
14914                                NL80211_REGDOM_TYPE_INTERSECTION))
14915                         goto nla_put_failure;
14916         } else {
14917                 if (nla_put_u8(msg, NL80211_ATTR_REG_TYPE,
14918                                NL80211_REGDOM_TYPE_COUNTRY) ||
14919                     nla_put_string(msg, NL80211_ATTR_REG_ALPHA2,
14920                                    request->alpha2))
14921                         goto nla_put_failure;
14922         }
14923
14924         if (request->wiphy_idx != WIPHY_IDX_INVALID) {
14925                 struct wiphy *wiphy = wiphy_idx_to_wiphy(request->wiphy_idx);
14926
14927                 if (wiphy &&
14928                     nla_put_u32(msg, NL80211_ATTR_WIPHY, request->wiphy_idx))
14929                         goto nla_put_failure;
14930
14931                 if (wiphy &&
14932                     wiphy->regulatory_flags & REGULATORY_WIPHY_SELF_MANAGED &&
14933                     nla_put_flag(msg, NL80211_ATTR_WIPHY_SELF_MANAGED_REG))
14934                         goto nla_put_failure;
14935         }
14936
14937         return true;
14938
14939 nla_put_failure:
14940         return false;
14941 }
14942
14943 /*
14944  * This can happen on global regulatory changes or device specific settings
14945  * based on custom regulatory domains.
14946  */
14947 void nl80211_common_reg_change_event(enum nl80211_commands cmd_id,
14948                                      struct regulatory_request *request)
14949 {
14950         struct sk_buff *msg;
14951         void *hdr;
14952
14953         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
14954         if (!msg)
14955                 return;
14956
14957         hdr = nl80211hdr_put(msg, 0, 0, 0, cmd_id);
14958         if (!hdr) {
14959                 nlmsg_free(msg);
14960                 return;
14961         }
14962
14963         if (nl80211_reg_change_event_fill(msg, request) == false)
14964                 goto nla_put_failure;
14965
14966         genlmsg_end(msg, hdr);
14967
14968         rcu_read_lock();
14969         genlmsg_multicast_allns(&nl80211_fam, msg, 0,
14970                                 NL80211_MCGRP_REGULATORY, GFP_ATOMIC);
14971         rcu_read_unlock();
14972
14973         return;
14974
14975 nla_put_failure:
14976         nlmsg_free(msg);
14977 }
14978
14979 static void nl80211_send_mlme_event(struct cfg80211_registered_device *rdev,
14980                                     struct net_device *netdev,
14981                                     const u8 *buf, size_t len,
14982                                     enum nl80211_commands cmd, gfp_t gfp,
14983                                     int uapsd_queues, const u8 *req_ies,
14984                                     size_t req_ies_len)
14985 {
14986         struct sk_buff *msg;
14987         void *hdr;
14988
14989         msg = nlmsg_new(100 + len + req_ies_len, gfp);
14990         if (!msg)
14991                 return;
14992
14993         hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
14994         if (!hdr) {
14995                 nlmsg_free(msg);
14996                 return;
14997         }
14998
14999         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
15000             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
15001             nla_put(msg, NL80211_ATTR_FRAME, len, buf) ||
15002             (req_ies &&
15003              nla_put(msg, NL80211_ATTR_REQ_IE, req_ies_len, req_ies)))
15004                 goto nla_put_failure;
15005
15006         if (uapsd_queues >= 0) {
15007                 struct nlattr *nla_wmm =
15008                         nla_nest_start_noflag(msg, NL80211_ATTR_STA_WME);
15009                 if (!nla_wmm)
15010                         goto nla_put_failure;
15011
15012                 if (nla_put_u8(msg, NL80211_STA_WME_UAPSD_QUEUES,
15013                                uapsd_queues))
15014                         goto nla_put_failure;
15015
15016                 nla_nest_end(msg, nla_wmm);
15017         }
15018
15019         genlmsg_end(msg, hdr);
15020
15021         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
15022                                 NL80211_MCGRP_MLME, gfp);
15023         return;
15024
15025  nla_put_failure:
15026         nlmsg_free(msg);
15027 }
15028
15029 void nl80211_send_rx_auth(struct cfg80211_registered_device *rdev,
15030                           struct net_device *netdev, const u8 *buf,
15031                           size_t len, gfp_t gfp)
15032 {
15033         nl80211_send_mlme_event(rdev, netdev, buf, len,
15034                                 NL80211_CMD_AUTHENTICATE, gfp, -1, NULL, 0);
15035 }
15036
15037 void nl80211_send_rx_assoc(struct cfg80211_registered_device *rdev,
15038                            struct net_device *netdev, const u8 *buf,
15039                            size_t len, gfp_t gfp, int uapsd_queues,
15040                            const u8 *req_ies, size_t req_ies_len)
15041 {
15042         nl80211_send_mlme_event(rdev, netdev, buf, len,
15043                                 NL80211_CMD_ASSOCIATE, gfp, uapsd_queues,
15044                                 req_ies, req_ies_len);
15045 }
15046
15047 void nl80211_send_deauth(struct cfg80211_registered_device *rdev,
15048                          struct net_device *netdev, const u8 *buf,
15049                          size_t len, gfp_t gfp)
15050 {
15051         nl80211_send_mlme_event(rdev, netdev, buf, len,
15052                                 NL80211_CMD_DEAUTHENTICATE, gfp, -1, NULL, 0);
15053 }
15054
15055 void nl80211_send_disassoc(struct cfg80211_registered_device *rdev,
15056                            struct net_device *netdev, const u8 *buf,
15057                            size_t len, gfp_t gfp)
15058 {
15059         nl80211_send_mlme_event(rdev, netdev, buf, len,
15060                                 NL80211_CMD_DISASSOCIATE, gfp, -1, NULL, 0);
15061 }
15062
15063 void cfg80211_rx_unprot_mlme_mgmt(struct net_device *dev, const u8 *buf,
15064                                   size_t len)
15065 {
15066         struct wireless_dev *wdev = dev->ieee80211_ptr;
15067         struct wiphy *wiphy = wdev->wiphy;
15068         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
15069         const struct ieee80211_mgmt *mgmt = (void *)buf;
15070         u32 cmd;
15071
15072         if (WARN_ON(len < 2))
15073                 return;
15074
15075         if (ieee80211_is_deauth(mgmt->frame_control))
15076                 cmd = NL80211_CMD_UNPROT_DEAUTHENTICATE;
15077         else
15078                 cmd = NL80211_CMD_UNPROT_DISASSOCIATE;
15079
15080         trace_cfg80211_rx_unprot_mlme_mgmt(dev, buf, len);
15081         nl80211_send_mlme_event(rdev, dev, buf, len, cmd, GFP_ATOMIC, -1,
15082                                 NULL, 0);
15083 }
15084 EXPORT_SYMBOL(cfg80211_rx_unprot_mlme_mgmt);
15085
15086 static void nl80211_send_mlme_timeout(struct cfg80211_registered_device *rdev,
15087                                       struct net_device *netdev, int cmd,
15088                                       const u8 *addr, gfp_t gfp)
15089 {
15090         struct sk_buff *msg;
15091         void *hdr;
15092
15093         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
15094         if (!msg)
15095                 return;
15096
15097         hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
15098         if (!hdr) {
15099                 nlmsg_free(msg);
15100                 return;
15101         }
15102
15103         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
15104             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
15105             nla_put_flag(msg, NL80211_ATTR_TIMED_OUT) ||
15106             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr))
15107                 goto nla_put_failure;
15108
15109         genlmsg_end(msg, hdr);
15110
15111         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
15112                                 NL80211_MCGRP_MLME, gfp);
15113         return;
15114
15115  nla_put_failure:
15116         nlmsg_free(msg);
15117 }
15118
15119 void nl80211_send_auth_timeout(struct cfg80211_registered_device *rdev,
15120                                struct net_device *netdev, const u8 *addr,
15121                                gfp_t gfp)
15122 {
15123         nl80211_send_mlme_timeout(rdev, netdev, NL80211_CMD_AUTHENTICATE,
15124                                   addr, gfp);
15125 }
15126
15127 void nl80211_send_assoc_timeout(struct cfg80211_registered_device *rdev,
15128                                 struct net_device *netdev, const u8 *addr,
15129                                 gfp_t gfp)
15130 {
15131         nl80211_send_mlme_timeout(rdev, netdev, NL80211_CMD_ASSOCIATE,
15132                                   addr, gfp);
15133 }
15134
15135 void nl80211_send_connect_result(struct cfg80211_registered_device *rdev,
15136                                  struct net_device *netdev,
15137                                  struct cfg80211_connect_resp_params *cr,
15138                                  gfp_t gfp)
15139 {
15140         struct sk_buff *msg;
15141         void *hdr;
15142
15143         msg = nlmsg_new(100 + cr->req_ie_len + cr->resp_ie_len +
15144                         cr->fils.kek_len + cr->fils.pmk_len +
15145                         (cr->fils.pmkid ? WLAN_PMKID_LEN : 0), gfp);
15146         if (!msg)
15147                 return;
15148
15149         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_CONNECT);
15150         if (!hdr) {
15151                 nlmsg_free(msg);
15152                 return;
15153         }
15154
15155         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
15156             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
15157             (cr->bssid &&
15158              nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, cr->bssid)) ||
15159             nla_put_u16(msg, NL80211_ATTR_STATUS_CODE,
15160                         cr->status < 0 ? WLAN_STATUS_UNSPECIFIED_FAILURE :
15161                         cr->status) ||
15162             (cr->status < 0 &&
15163              (nla_put_flag(msg, NL80211_ATTR_TIMED_OUT) ||
15164               nla_put_u32(msg, NL80211_ATTR_TIMEOUT_REASON,
15165                           cr->timeout_reason))) ||
15166             (cr->req_ie &&
15167              nla_put(msg, NL80211_ATTR_REQ_IE, cr->req_ie_len, cr->req_ie)) ||
15168             (cr->resp_ie &&
15169              nla_put(msg, NL80211_ATTR_RESP_IE, cr->resp_ie_len,
15170                      cr->resp_ie)) ||
15171             (cr->fils.update_erp_next_seq_num &&
15172              nla_put_u16(msg, NL80211_ATTR_FILS_ERP_NEXT_SEQ_NUM,
15173                          cr->fils.erp_next_seq_num)) ||
15174             (cr->status == WLAN_STATUS_SUCCESS &&
15175              ((cr->fils.kek &&
15176                nla_put(msg, NL80211_ATTR_FILS_KEK, cr->fils.kek_len,
15177                        cr->fils.kek)) ||
15178               (cr->fils.pmk &&
15179                nla_put(msg, NL80211_ATTR_PMK, cr->fils.pmk_len, cr->fils.pmk)) ||
15180               (cr->fils.pmkid &&
15181                nla_put(msg, NL80211_ATTR_PMKID, WLAN_PMKID_LEN, cr->fils.pmkid)))))
15182                 goto nla_put_failure;
15183
15184         genlmsg_end(msg, hdr);
15185
15186         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
15187                                 NL80211_MCGRP_MLME, gfp);
15188         return;
15189
15190  nla_put_failure:
15191         nlmsg_free(msg);
15192 }
15193
15194 void nl80211_send_roamed(struct cfg80211_registered_device *rdev,
15195                          struct net_device *netdev,
15196                          struct cfg80211_roam_info *info, gfp_t gfp)
15197 {
15198         struct sk_buff *msg;
15199         void *hdr;
15200         const u8 *bssid = info->bss ? info->bss->bssid : info->bssid;
15201
15202         msg = nlmsg_new(100 + info->req_ie_len + info->resp_ie_len +
15203                         info->fils.kek_len + info->fils.pmk_len +
15204                         (info->fils.pmkid ? WLAN_PMKID_LEN : 0), gfp);
15205         if (!msg)
15206                 return;
15207
15208         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_ROAM);
15209         if (!hdr) {
15210                 nlmsg_free(msg);
15211                 return;
15212         }
15213
15214         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
15215             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
15216             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid) ||
15217             (info->req_ie &&
15218              nla_put(msg, NL80211_ATTR_REQ_IE, info->req_ie_len,
15219                      info->req_ie)) ||
15220             (info->resp_ie &&
15221              nla_put(msg, NL80211_ATTR_RESP_IE, info->resp_ie_len,
15222                      info->resp_ie)) ||
15223             (info->fils.update_erp_next_seq_num &&
15224              nla_put_u16(msg, NL80211_ATTR_FILS_ERP_NEXT_SEQ_NUM,
15225                          info->fils.erp_next_seq_num)) ||
15226             (info->fils.kek &&
15227              nla_put(msg, NL80211_ATTR_FILS_KEK, info->fils.kek_len,
15228                      info->fils.kek)) ||
15229             (info->fils.pmk &&
15230              nla_put(msg, NL80211_ATTR_PMK, info->fils.pmk_len, info->fils.pmk)) ||
15231             (info->fils.pmkid &&
15232              nla_put(msg, NL80211_ATTR_PMKID, WLAN_PMKID_LEN, info->fils.pmkid)))
15233                 goto nla_put_failure;
15234
15235         genlmsg_end(msg, hdr);
15236
15237         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
15238                                 NL80211_MCGRP_MLME, gfp);
15239         return;
15240
15241  nla_put_failure:
15242         nlmsg_free(msg);
15243 }
15244
15245 void nl80211_send_port_authorized(struct cfg80211_registered_device *rdev,
15246                                   struct net_device *netdev, const u8 *bssid)
15247 {
15248         struct sk_buff *msg;
15249         void *hdr;
15250
15251         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
15252         if (!msg)
15253                 return;
15254
15255         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_PORT_AUTHORIZED);
15256         if (!hdr) {
15257                 nlmsg_free(msg);
15258                 return;
15259         }
15260
15261         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
15262             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
15263             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid))
15264                 goto nla_put_failure;
15265
15266         genlmsg_end(msg, hdr);
15267
15268         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
15269                                 NL80211_MCGRP_MLME, GFP_KERNEL);
15270         return;
15271
15272  nla_put_failure:
15273         nlmsg_free(msg);
15274 }
15275
15276 void nl80211_send_disconnected(struct cfg80211_registered_device *rdev,
15277                                struct net_device *netdev, u16 reason,
15278                                const u8 *ie, size_t ie_len, bool from_ap)
15279 {
15280         struct sk_buff *msg;
15281         void *hdr;
15282
15283         msg = nlmsg_new(100 + ie_len, GFP_KERNEL);
15284         if (!msg)
15285                 return;
15286
15287         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_DISCONNECT);
15288         if (!hdr) {
15289                 nlmsg_free(msg);
15290                 return;
15291         }
15292
15293         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
15294             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
15295             (reason &&
15296              nla_put_u16(msg, NL80211_ATTR_REASON_CODE, reason)) ||
15297             (from_ap &&
15298              nla_put_flag(msg, NL80211_ATTR_DISCONNECTED_BY_AP)) ||
15299             (ie && nla_put(msg, NL80211_ATTR_IE, ie_len, ie)))
15300                 goto nla_put_failure;
15301
15302         genlmsg_end(msg, hdr);
15303
15304         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
15305                                 NL80211_MCGRP_MLME, GFP_KERNEL);
15306         return;
15307
15308  nla_put_failure:
15309         nlmsg_free(msg);
15310 }
15311
15312 void nl80211_send_ibss_bssid(struct cfg80211_registered_device *rdev,
15313                              struct net_device *netdev, const u8 *bssid,
15314                              gfp_t gfp)
15315 {
15316         struct sk_buff *msg;
15317         void *hdr;
15318
15319         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
15320         if (!msg)
15321                 return;
15322
15323         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_JOIN_IBSS);
15324         if (!hdr) {
15325                 nlmsg_free(msg);
15326                 return;
15327         }
15328
15329         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
15330             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
15331             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid))
15332                 goto nla_put_failure;
15333
15334         genlmsg_end(msg, hdr);
15335
15336         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
15337                                 NL80211_MCGRP_MLME, gfp);
15338         return;
15339
15340  nla_put_failure:
15341         nlmsg_free(msg);
15342 }
15343
15344 void cfg80211_notify_new_peer_candidate(struct net_device *dev, const u8 *addr,
15345                                         const u8 *ie, u8 ie_len,
15346                                         int sig_dbm, gfp_t gfp)
15347 {
15348         struct wireless_dev *wdev = dev->ieee80211_ptr;
15349         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
15350         struct sk_buff *msg;
15351         void *hdr;
15352
15353         if (WARN_ON(wdev->iftype != NL80211_IFTYPE_MESH_POINT))
15354                 return;
15355
15356         trace_cfg80211_notify_new_peer_candidate(dev, addr);
15357
15358         msg = nlmsg_new(100 + ie_len, gfp);
15359         if (!msg)
15360                 return;
15361
15362         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_NEW_PEER_CANDIDATE);
15363         if (!hdr) {
15364                 nlmsg_free(msg);
15365                 return;
15366         }
15367
15368         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
15369             nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
15370             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr) ||
15371             (ie_len && ie &&
15372              nla_put(msg, NL80211_ATTR_IE, ie_len, ie)) ||
15373             (sig_dbm &&
15374              nla_put_u32(msg, NL80211_ATTR_RX_SIGNAL_DBM, sig_dbm)))
15375                 goto nla_put_failure;
15376
15377         genlmsg_end(msg, hdr);
15378
15379         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
15380                                 NL80211_MCGRP_MLME, gfp);
15381         return;
15382
15383  nla_put_failure:
15384         nlmsg_free(msg);
15385 }
15386 EXPORT_SYMBOL(cfg80211_notify_new_peer_candidate);
15387
15388 void nl80211_michael_mic_failure(struct cfg80211_registered_device *rdev,
15389                                  struct net_device *netdev, const u8 *addr,
15390                                  enum nl80211_key_type key_type, int key_id,
15391                                  const u8 *tsc, gfp_t gfp)
15392 {
15393         struct sk_buff *msg;
15394         void *hdr;
15395
15396         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
15397         if (!msg)
15398                 return;
15399
15400         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_MICHAEL_MIC_FAILURE);
15401         if (!hdr) {
15402                 nlmsg_free(msg);
15403                 return;
15404         }
15405
15406         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
15407             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
15408             (addr && nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr)) ||
15409             nla_put_u32(msg, NL80211_ATTR_KEY_TYPE, key_type) ||
15410             (key_id != -1 &&
15411              nla_put_u8(msg, NL80211_ATTR_KEY_IDX, key_id)) ||
15412             (tsc && nla_put(msg, NL80211_ATTR_KEY_SEQ, 6, tsc)))
15413                 goto nla_put_failure;
15414
15415         genlmsg_end(msg, hdr);
15416
15417         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
15418                                 NL80211_MCGRP_MLME, gfp);
15419         return;
15420
15421  nla_put_failure:
15422         nlmsg_free(msg);
15423 }
15424
15425 void nl80211_send_beacon_hint_event(struct wiphy *wiphy,
15426                                     struct ieee80211_channel *channel_before,
15427                                     struct ieee80211_channel *channel_after)
15428 {
15429         struct sk_buff *msg;
15430         void *hdr;
15431         struct nlattr *nl_freq;
15432
15433         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_ATOMIC);
15434         if (!msg)
15435                 return;
15436
15437         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_REG_BEACON_HINT);
15438         if (!hdr) {
15439                 nlmsg_free(msg);
15440                 return;
15441         }
15442
15443         /*
15444          * Since we are applying the beacon hint to a wiphy we know its
15445          * wiphy_idx is valid
15446          */
15447         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, get_wiphy_idx(wiphy)))
15448                 goto nla_put_failure;
15449
15450         /* Before */
15451         nl_freq = nla_nest_start_noflag(msg, NL80211_ATTR_FREQ_BEFORE);
15452         if (!nl_freq)
15453                 goto nla_put_failure;
15454
15455         if (nl80211_msg_put_channel(msg, wiphy, channel_before, false))
15456                 goto nla_put_failure;
15457         nla_nest_end(msg, nl_freq);
15458
15459         /* After */
15460         nl_freq = nla_nest_start_noflag(msg, NL80211_ATTR_FREQ_AFTER);
15461         if (!nl_freq)
15462                 goto nla_put_failure;
15463
15464         if (nl80211_msg_put_channel(msg, wiphy, channel_after, false))
15465                 goto nla_put_failure;
15466         nla_nest_end(msg, nl_freq);
15467
15468         genlmsg_end(msg, hdr);
15469
15470         rcu_read_lock();
15471         genlmsg_multicast_allns(&nl80211_fam, msg, 0,
15472                                 NL80211_MCGRP_REGULATORY, GFP_ATOMIC);
15473         rcu_read_unlock();
15474
15475         return;
15476
15477 nla_put_failure:
15478         nlmsg_free(msg);
15479 }
15480
15481 static void nl80211_send_remain_on_chan_event(
15482         int cmd, struct cfg80211_registered_device *rdev,
15483         struct wireless_dev *wdev, u64 cookie,
15484         struct ieee80211_channel *chan,
15485         unsigned int duration, gfp_t gfp)
15486 {
15487         struct sk_buff *msg;
15488         void *hdr;
15489
15490         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
15491         if (!msg)
15492                 return;
15493
15494         hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
15495         if (!hdr) {
15496                 nlmsg_free(msg);
15497                 return;
15498         }
15499
15500         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
15501             (wdev->netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
15502                                          wdev->netdev->ifindex)) ||
15503             nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
15504                               NL80211_ATTR_PAD) ||
15505             nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ, chan->center_freq) ||
15506             nla_put_u32(msg, NL80211_ATTR_WIPHY_CHANNEL_TYPE,
15507                         NL80211_CHAN_NO_HT) ||
15508             nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, cookie,
15509                               NL80211_ATTR_PAD))
15510                 goto nla_put_failure;
15511
15512         if (cmd == NL80211_CMD_REMAIN_ON_CHANNEL &&
15513             nla_put_u32(msg, NL80211_ATTR_DURATION, duration))
15514                 goto nla_put_failure;
15515
15516         genlmsg_end(msg, hdr);
15517
15518         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
15519                                 NL80211_MCGRP_MLME, gfp);
15520         return;
15521
15522  nla_put_failure:
15523         nlmsg_free(msg);
15524 }
15525
15526 void cfg80211_ready_on_channel(struct wireless_dev *wdev, u64 cookie,
15527                                struct ieee80211_channel *chan,
15528                                unsigned int duration, gfp_t gfp)
15529 {
15530         struct wiphy *wiphy = wdev->wiphy;
15531         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
15532
15533         trace_cfg80211_ready_on_channel(wdev, cookie, chan, duration);
15534         nl80211_send_remain_on_chan_event(NL80211_CMD_REMAIN_ON_CHANNEL,
15535                                           rdev, wdev, cookie, chan,
15536                                           duration, gfp);
15537 }
15538 EXPORT_SYMBOL(cfg80211_ready_on_channel);
15539
15540 void cfg80211_remain_on_channel_expired(struct wireless_dev *wdev, u64 cookie,
15541                                         struct ieee80211_channel *chan,
15542                                         gfp_t gfp)
15543 {
15544         struct wiphy *wiphy = wdev->wiphy;
15545         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
15546
15547         trace_cfg80211_ready_on_channel_expired(wdev, cookie, chan);
15548         nl80211_send_remain_on_chan_event(NL80211_CMD_CANCEL_REMAIN_ON_CHANNEL,
15549                                           rdev, wdev, cookie, chan, 0, gfp);
15550 }
15551 EXPORT_SYMBOL(cfg80211_remain_on_channel_expired);
15552
15553 void cfg80211_tx_mgmt_expired(struct wireless_dev *wdev, u64 cookie,
15554                                         struct ieee80211_channel *chan,
15555                                         gfp_t gfp)
15556 {
15557         struct wiphy *wiphy = wdev->wiphy;
15558         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
15559
15560         trace_cfg80211_tx_mgmt_expired(wdev, cookie, chan);
15561         nl80211_send_remain_on_chan_event(NL80211_CMD_FRAME_WAIT_CANCEL,
15562                                           rdev, wdev, cookie, chan, 0, gfp);
15563 }
15564 EXPORT_SYMBOL(cfg80211_tx_mgmt_expired);
15565
15566 void cfg80211_new_sta(struct net_device *dev, const u8 *mac_addr,
15567                       struct station_info *sinfo, gfp_t gfp)
15568 {
15569         struct wiphy *wiphy = dev->ieee80211_ptr->wiphy;
15570         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
15571         struct sk_buff *msg;
15572
15573         trace_cfg80211_new_sta(dev, mac_addr, sinfo);
15574
15575         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
15576         if (!msg)
15577                 return;
15578
15579         if (nl80211_send_station(msg, NL80211_CMD_NEW_STATION, 0, 0, 0,
15580                                  rdev, dev, mac_addr, sinfo) < 0) {
15581                 nlmsg_free(msg);
15582                 return;
15583         }
15584
15585         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
15586                                 NL80211_MCGRP_MLME, gfp);
15587 }
15588 EXPORT_SYMBOL(cfg80211_new_sta);
15589
15590 void cfg80211_del_sta_sinfo(struct net_device *dev, const u8 *mac_addr,
15591                             struct station_info *sinfo, gfp_t gfp)
15592 {
15593         struct wiphy *wiphy = dev->ieee80211_ptr->wiphy;
15594         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
15595         struct sk_buff *msg;
15596         struct station_info empty_sinfo = {};
15597
15598         if (!sinfo)
15599                 sinfo = &empty_sinfo;
15600
15601         trace_cfg80211_del_sta(dev, mac_addr);
15602
15603         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
15604         if (!msg) {
15605                 cfg80211_sinfo_release_content(sinfo);
15606                 return;
15607         }
15608
15609         if (nl80211_send_station(msg, NL80211_CMD_DEL_STATION, 0, 0, 0,
15610                                  rdev, dev, mac_addr, sinfo) < 0) {
15611                 nlmsg_free(msg);
15612                 return;
15613         }
15614
15615         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
15616                                 NL80211_MCGRP_MLME, gfp);
15617 }
15618 EXPORT_SYMBOL(cfg80211_del_sta_sinfo);
15619
15620 void cfg80211_conn_failed(struct net_device *dev, const u8 *mac_addr,
15621                           enum nl80211_connect_failed_reason reason,
15622                           gfp_t gfp)
15623 {
15624         struct wiphy *wiphy = dev->ieee80211_ptr->wiphy;
15625         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
15626         struct sk_buff *msg;
15627         void *hdr;
15628
15629         msg = nlmsg_new(NLMSG_GOODSIZE, gfp);
15630         if (!msg)
15631                 return;
15632
15633         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_CONN_FAILED);
15634         if (!hdr) {
15635                 nlmsg_free(msg);
15636                 return;
15637         }
15638
15639         if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
15640             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, mac_addr) ||
15641             nla_put_u32(msg, NL80211_ATTR_CONN_FAILED_REASON, reason))
15642                 goto nla_put_failure;
15643
15644         genlmsg_end(msg, hdr);
15645
15646         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
15647                                 NL80211_MCGRP_MLME, gfp);
15648         return;
15649
15650  nla_put_failure:
15651         nlmsg_free(msg);
15652 }
15653 EXPORT_SYMBOL(cfg80211_conn_failed);
15654
15655 static bool __nl80211_unexpected_frame(struct net_device *dev, u8 cmd,
15656                                        const u8 *addr, gfp_t gfp)
15657 {
15658         struct wireless_dev *wdev = dev->ieee80211_ptr;
15659         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
15660         struct sk_buff *msg;
15661         void *hdr;
15662         u32 nlportid = READ_ONCE(wdev->ap_unexpected_nlportid);
15663
15664         if (!nlportid)
15665                 return false;
15666
15667         msg = nlmsg_new(100, gfp);
15668         if (!msg)
15669                 return true;
15670
15671         hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
15672         if (!hdr) {
15673                 nlmsg_free(msg);
15674                 return true;
15675         }
15676
15677         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
15678             nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
15679             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr))
15680                 goto nla_put_failure;
15681
15682         genlmsg_end(msg, hdr);
15683         genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, nlportid);
15684         return true;
15685
15686  nla_put_failure:
15687         nlmsg_free(msg);
15688         return true;
15689 }
15690
15691 bool cfg80211_rx_spurious_frame(struct net_device *dev,
15692                                 const u8 *addr, gfp_t gfp)
15693 {
15694         struct wireless_dev *wdev = dev->ieee80211_ptr;
15695         bool ret;
15696
15697         trace_cfg80211_rx_spurious_frame(dev, addr);
15698
15699         if (WARN_ON(wdev->iftype != NL80211_IFTYPE_AP &&
15700                     wdev->iftype != NL80211_IFTYPE_P2P_GO)) {
15701                 trace_cfg80211_return_bool(false);
15702                 return false;
15703         }
15704         ret = __nl80211_unexpected_frame(dev, NL80211_CMD_UNEXPECTED_FRAME,
15705                                          addr, gfp);
15706         trace_cfg80211_return_bool(ret);
15707         return ret;
15708 }
15709 EXPORT_SYMBOL(cfg80211_rx_spurious_frame);
15710
15711 bool cfg80211_rx_unexpected_4addr_frame(struct net_device *dev,
15712                                         const u8 *addr, gfp_t gfp)
15713 {
15714         struct wireless_dev *wdev = dev->ieee80211_ptr;
15715         bool ret;
15716
15717         trace_cfg80211_rx_unexpected_4addr_frame(dev, addr);
15718
15719         if (WARN_ON(wdev->iftype != NL80211_IFTYPE_AP &&
15720                     wdev->iftype != NL80211_IFTYPE_P2P_GO &&
15721                     wdev->iftype != NL80211_IFTYPE_AP_VLAN)) {
15722                 trace_cfg80211_return_bool(false);
15723                 return false;
15724         }
15725         ret = __nl80211_unexpected_frame(dev,
15726                                          NL80211_CMD_UNEXPECTED_4ADDR_FRAME,
15727                                          addr, gfp);
15728         trace_cfg80211_return_bool(ret);
15729         return ret;
15730 }
15731 EXPORT_SYMBOL(cfg80211_rx_unexpected_4addr_frame);
15732
15733 int nl80211_send_mgmt(struct cfg80211_registered_device *rdev,
15734                       struct wireless_dev *wdev, u32 nlportid,
15735                       int freq, int sig_dbm,
15736                       const u8 *buf, size_t len, u32 flags, gfp_t gfp)
15737 {
15738         struct net_device *netdev = wdev->netdev;
15739         struct sk_buff *msg;
15740         void *hdr;
15741
15742         msg = nlmsg_new(100 + len, gfp);
15743         if (!msg)
15744                 return -ENOMEM;
15745
15746         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_FRAME);
15747         if (!hdr) {
15748                 nlmsg_free(msg);
15749                 return -ENOMEM;
15750         }
15751
15752         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
15753             (netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
15754                                         netdev->ifindex)) ||
15755             nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
15756                               NL80211_ATTR_PAD) ||
15757             nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ, freq) ||
15758             (sig_dbm &&
15759              nla_put_u32(msg, NL80211_ATTR_RX_SIGNAL_DBM, sig_dbm)) ||
15760             nla_put(msg, NL80211_ATTR_FRAME, len, buf) ||
15761             (flags &&
15762              nla_put_u32(msg, NL80211_ATTR_RXMGMT_FLAGS, flags)))
15763                 goto nla_put_failure;
15764
15765         genlmsg_end(msg, hdr);
15766
15767         return genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, nlportid);
15768
15769  nla_put_failure:
15770         nlmsg_free(msg);
15771         return -ENOBUFS;
15772 }
15773
15774 void cfg80211_mgmt_tx_status(struct wireless_dev *wdev, u64 cookie,
15775                              const u8 *buf, size_t len, bool ack, gfp_t gfp)
15776 {
15777         struct wiphy *wiphy = wdev->wiphy;
15778         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
15779         struct net_device *netdev = wdev->netdev;
15780         struct sk_buff *msg;
15781         void *hdr;
15782
15783         trace_cfg80211_mgmt_tx_status(wdev, cookie, ack);
15784
15785         msg = nlmsg_new(100 + len, gfp);
15786         if (!msg)
15787                 return;
15788
15789         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_FRAME_TX_STATUS);
15790         if (!hdr) {
15791                 nlmsg_free(msg);
15792                 return;
15793         }
15794
15795         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
15796             (netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
15797                                    netdev->ifindex)) ||
15798             nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
15799                               NL80211_ATTR_PAD) ||
15800             nla_put(msg, NL80211_ATTR_FRAME, len, buf) ||
15801             nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, cookie,
15802                               NL80211_ATTR_PAD) ||
15803             (ack && nla_put_flag(msg, NL80211_ATTR_ACK)))
15804                 goto nla_put_failure;
15805
15806         genlmsg_end(msg, hdr);
15807
15808         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
15809                                 NL80211_MCGRP_MLME, gfp);
15810         return;
15811
15812  nla_put_failure:
15813         nlmsg_free(msg);
15814 }
15815 EXPORT_SYMBOL(cfg80211_mgmt_tx_status);
15816
15817 static int __nl80211_rx_control_port(struct net_device *dev,
15818                                      struct sk_buff *skb,
15819                                      bool unencrypted, gfp_t gfp)
15820 {
15821         struct wireless_dev *wdev = dev->ieee80211_ptr;
15822         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
15823         struct ethhdr *ehdr = eth_hdr(skb);
15824         const u8 *addr = ehdr->h_source;
15825         u16 proto = be16_to_cpu(skb->protocol);
15826         struct sk_buff *msg;
15827         void *hdr;
15828         struct nlattr *frame;
15829
15830         u32 nlportid = READ_ONCE(wdev->conn_owner_nlportid);
15831
15832         if (!nlportid)
15833                 return -ENOENT;
15834
15835         msg = nlmsg_new(100 + skb->len, gfp);
15836         if (!msg)
15837                 return -ENOMEM;
15838
15839         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_CONTROL_PORT_FRAME);
15840         if (!hdr) {
15841                 nlmsg_free(msg);
15842                 return -ENOBUFS;
15843         }
15844
15845         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
15846             nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
15847             nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
15848                               NL80211_ATTR_PAD) ||
15849             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr) ||
15850             nla_put_u16(msg, NL80211_ATTR_CONTROL_PORT_ETHERTYPE, proto) ||
15851             (unencrypted && nla_put_flag(msg,
15852                                          NL80211_ATTR_CONTROL_PORT_NO_ENCRYPT)))
15853                 goto nla_put_failure;
15854
15855         frame = nla_reserve(msg, NL80211_ATTR_FRAME, skb->len);
15856         if (!frame)
15857                 goto nla_put_failure;
15858
15859         skb_copy_bits(skb, 0, nla_data(frame), skb->len);
15860         genlmsg_end(msg, hdr);
15861
15862         return genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, nlportid);
15863
15864  nla_put_failure:
15865         nlmsg_free(msg);
15866         return -ENOBUFS;
15867 }
15868
15869 bool cfg80211_rx_control_port(struct net_device *dev,
15870                               struct sk_buff *skb, bool unencrypted)
15871 {
15872         int ret;
15873
15874         trace_cfg80211_rx_control_port(dev, skb, unencrypted);
15875         ret = __nl80211_rx_control_port(dev, skb, unencrypted, GFP_ATOMIC);
15876         trace_cfg80211_return_bool(ret == 0);
15877         return ret == 0;
15878 }
15879 EXPORT_SYMBOL(cfg80211_rx_control_port);
15880
15881 static struct sk_buff *cfg80211_prepare_cqm(struct net_device *dev,
15882                                             const char *mac, gfp_t gfp)
15883 {
15884         struct wireless_dev *wdev = dev->ieee80211_ptr;
15885         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
15886         struct sk_buff *msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
15887         void **cb;
15888
15889         if (!msg)
15890                 return NULL;
15891
15892         cb = (void **)msg->cb;
15893
15894         cb[0] = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_NOTIFY_CQM);
15895         if (!cb[0]) {
15896                 nlmsg_free(msg);
15897                 return NULL;
15898         }
15899
15900         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
15901             nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex))
15902                 goto nla_put_failure;
15903
15904         if (mac && nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, mac))
15905                 goto nla_put_failure;
15906
15907         cb[1] = nla_nest_start_noflag(msg, NL80211_ATTR_CQM);
15908         if (!cb[1])
15909                 goto nla_put_failure;
15910
15911         cb[2] = rdev;
15912
15913         return msg;
15914  nla_put_failure:
15915         nlmsg_free(msg);
15916         return NULL;
15917 }
15918
15919 static void cfg80211_send_cqm(struct sk_buff *msg, gfp_t gfp)
15920 {
15921         void **cb = (void **)msg->cb;
15922         struct cfg80211_registered_device *rdev = cb[2];
15923
15924         nla_nest_end(msg, cb[1]);
15925         genlmsg_end(msg, cb[0]);
15926
15927         memset(msg->cb, 0, sizeof(msg->cb));
15928
15929         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
15930                                 NL80211_MCGRP_MLME, gfp);
15931 }
15932
15933 void cfg80211_cqm_rssi_notify(struct net_device *dev,
15934                               enum nl80211_cqm_rssi_threshold_event rssi_event,
15935                               s32 rssi_level, gfp_t gfp)
15936 {
15937         struct sk_buff *msg;
15938         struct wireless_dev *wdev = dev->ieee80211_ptr;
15939         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
15940
15941         trace_cfg80211_cqm_rssi_notify(dev, rssi_event, rssi_level);
15942
15943         if (WARN_ON(rssi_event != NL80211_CQM_RSSI_THRESHOLD_EVENT_LOW &&
15944                     rssi_event != NL80211_CQM_RSSI_THRESHOLD_EVENT_HIGH))
15945                 return;
15946
15947         if (wdev->cqm_config) {
15948                 wdev->cqm_config->last_rssi_event_value = rssi_level;
15949
15950                 cfg80211_cqm_rssi_update(rdev, dev);
15951
15952                 if (rssi_level == 0)
15953                         rssi_level = wdev->cqm_config->last_rssi_event_value;
15954         }
15955
15956         msg = cfg80211_prepare_cqm(dev, NULL, gfp);
15957         if (!msg)
15958                 return;
15959
15960         if (nla_put_u32(msg, NL80211_ATTR_CQM_RSSI_THRESHOLD_EVENT,
15961                         rssi_event))
15962                 goto nla_put_failure;
15963
15964         if (rssi_level && nla_put_s32(msg, NL80211_ATTR_CQM_RSSI_LEVEL,
15965                                       rssi_level))
15966                 goto nla_put_failure;
15967
15968         cfg80211_send_cqm(msg, gfp);
15969
15970         return;
15971
15972  nla_put_failure:
15973         nlmsg_free(msg);
15974 }
15975 EXPORT_SYMBOL(cfg80211_cqm_rssi_notify);
15976
15977 void cfg80211_cqm_txe_notify(struct net_device *dev,
15978                              const u8 *peer, u32 num_packets,
15979                              u32 rate, u32 intvl, gfp_t gfp)
15980 {
15981         struct sk_buff *msg;
15982
15983         msg = cfg80211_prepare_cqm(dev, peer, gfp);
15984         if (!msg)
15985                 return;
15986
15987         if (nla_put_u32(msg, NL80211_ATTR_CQM_TXE_PKTS, num_packets))
15988                 goto nla_put_failure;
15989
15990         if (nla_put_u32(msg, NL80211_ATTR_CQM_TXE_RATE, rate))
15991                 goto nla_put_failure;
15992
15993         if (nla_put_u32(msg, NL80211_ATTR_CQM_TXE_INTVL, intvl))
15994                 goto nla_put_failure;
15995
15996         cfg80211_send_cqm(msg, gfp);
15997         return;
15998
15999  nla_put_failure:
16000         nlmsg_free(msg);
16001 }
16002 EXPORT_SYMBOL(cfg80211_cqm_txe_notify);
16003
16004 void cfg80211_cqm_pktloss_notify(struct net_device *dev,
16005                                  const u8 *peer, u32 num_packets, gfp_t gfp)
16006 {
16007         struct sk_buff *msg;
16008
16009         trace_cfg80211_cqm_pktloss_notify(dev, peer, num_packets);
16010
16011         msg = cfg80211_prepare_cqm(dev, peer, gfp);
16012         if (!msg)
16013                 return;
16014
16015         if (nla_put_u32(msg, NL80211_ATTR_CQM_PKT_LOSS_EVENT, num_packets))
16016                 goto nla_put_failure;
16017
16018         cfg80211_send_cqm(msg, gfp);
16019         return;
16020
16021  nla_put_failure:
16022         nlmsg_free(msg);
16023 }
16024 EXPORT_SYMBOL(cfg80211_cqm_pktloss_notify);
16025
16026 void cfg80211_cqm_beacon_loss_notify(struct net_device *dev, gfp_t gfp)
16027 {
16028         struct sk_buff *msg;
16029
16030         msg = cfg80211_prepare_cqm(dev, NULL, gfp);
16031         if (!msg)
16032                 return;
16033
16034         if (nla_put_flag(msg, NL80211_ATTR_CQM_BEACON_LOSS_EVENT))
16035                 goto nla_put_failure;
16036
16037         cfg80211_send_cqm(msg, gfp);
16038         return;
16039
16040  nla_put_failure:
16041         nlmsg_free(msg);
16042 }
16043 EXPORT_SYMBOL(cfg80211_cqm_beacon_loss_notify);
16044
16045 static void nl80211_gtk_rekey_notify(struct cfg80211_registered_device *rdev,
16046                                      struct net_device *netdev, const u8 *bssid,
16047                                      const u8 *replay_ctr, gfp_t gfp)
16048 {
16049         struct sk_buff *msg;
16050         struct nlattr *rekey_attr;
16051         void *hdr;
16052
16053         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
16054         if (!msg)
16055                 return;
16056
16057         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_SET_REKEY_OFFLOAD);
16058         if (!hdr) {
16059                 nlmsg_free(msg);
16060                 return;
16061         }
16062
16063         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
16064             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
16065             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid))
16066                 goto nla_put_failure;
16067
16068         rekey_attr = nla_nest_start_noflag(msg, NL80211_ATTR_REKEY_DATA);
16069         if (!rekey_attr)
16070                 goto nla_put_failure;
16071
16072         if (nla_put(msg, NL80211_REKEY_DATA_REPLAY_CTR,
16073                     NL80211_REPLAY_CTR_LEN, replay_ctr))
16074                 goto nla_put_failure;
16075
16076         nla_nest_end(msg, rekey_attr);
16077
16078         genlmsg_end(msg, hdr);
16079
16080         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
16081                                 NL80211_MCGRP_MLME, gfp);
16082         return;
16083
16084  nla_put_failure:
16085         nlmsg_free(msg);
16086 }
16087
16088 void cfg80211_gtk_rekey_notify(struct net_device *dev, const u8 *bssid,
16089                                const u8 *replay_ctr, gfp_t gfp)
16090 {
16091         struct wireless_dev *wdev = dev->ieee80211_ptr;
16092         struct wiphy *wiphy = wdev->wiphy;
16093         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
16094
16095         trace_cfg80211_gtk_rekey_notify(dev, bssid);
16096         nl80211_gtk_rekey_notify(rdev, dev, bssid, replay_ctr, gfp);
16097 }
16098 EXPORT_SYMBOL(cfg80211_gtk_rekey_notify);
16099
16100 static void
16101 nl80211_pmksa_candidate_notify(struct cfg80211_registered_device *rdev,
16102                                struct net_device *netdev, int index,
16103                                const u8 *bssid, bool preauth, gfp_t gfp)
16104 {
16105         struct sk_buff *msg;
16106         struct nlattr *attr;
16107         void *hdr;
16108
16109         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
16110         if (!msg)
16111                 return;
16112
16113         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_PMKSA_CANDIDATE);
16114         if (!hdr) {
16115                 nlmsg_free(msg);
16116                 return;
16117         }
16118
16119         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
16120             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex))
16121                 goto nla_put_failure;
16122
16123         attr = nla_nest_start_noflag(msg, NL80211_ATTR_PMKSA_CANDIDATE);
16124         if (!attr)
16125                 goto nla_put_failure;
16126
16127         if (nla_put_u32(msg, NL80211_PMKSA_CANDIDATE_INDEX, index) ||
16128             nla_put(msg, NL80211_PMKSA_CANDIDATE_BSSID, ETH_ALEN, bssid) ||
16129             (preauth &&
16130              nla_put_flag(msg, NL80211_PMKSA_CANDIDATE_PREAUTH)))
16131                 goto nla_put_failure;
16132
16133         nla_nest_end(msg, attr);
16134
16135         genlmsg_end(msg, hdr);
16136
16137         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
16138                                 NL80211_MCGRP_MLME, gfp);
16139         return;
16140
16141  nla_put_failure:
16142         nlmsg_free(msg);
16143 }
16144
16145 void cfg80211_pmksa_candidate_notify(struct net_device *dev, int index,
16146                                      const u8 *bssid, bool preauth, gfp_t gfp)
16147 {
16148         struct wireless_dev *wdev = dev->ieee80211_ptr;
16149         struct wiphy *wiphy = wdev->wiphy;
16150         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
16151
16152         trace_cfg80211_pmksa_candidate_notify(dev, index, bssid, preauth);
16153         nl80211_pmksa_candidate_notify(rdev, dev, index, bssid, preauth, gfp);
16154 }
16155 EXPORT_SYMBOL(cfg80211_pmksa_candidate_notify);
16156
16157 static void nl80211_ch_switch_notify(struct cfg80211_registered_device *rdev,
16158                                      struct net_device *netdev,
16159                                      struct cfg80211_chan_def *chandef,
16160                                      gfp_t gfp,
16161                                      enum nl80211_commands notif,
16162                                      u8 count)
16163 {
16164         struct sk_buff *msg;
16165         void *hdr;
16166
16167         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
16168         if (!msg)
16169                 return;
16170
16171         hdr = nl80211hdr_put(msg, 0, 0, 0, notif);
16172         if (!hdr) {
16173                 nlmsg_free(msg);
16174                 return;
16175         }
16176
16177         if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex))
16178                 goto nla_put_failure;
16179
16180         if (nl80211_send_chandef(msg, chandef))
16181                 goto nla_put_failure;
16182
16183         if ((notif == NL80211_CMD_CH_SWITCH_STARTED_NOTIFY) &&
16184             (nla_put_u32(msg, NL80211_ATTR_CH_SWITCH_COUNT, count)))
16185                         goto nla_put_failure;
16186
16187         genlmsg_end(msg, hdr);
16188
16189         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
16190                                 NL80211_MCGRP_MLME, gfp);
16191         return;
16192
16193  nla_put_failure:
16194         nlmsg_free(msg);
16195 }
16196
16197 void cfg80211_ch_switch_notify(struct net_device *dev,
16198                                struct cfg80211_chan_def *chandef)
16199 {
16200         struct wireless_dev *wdev = dev->ieee80211_ptr;
16201         struct wiphy *wiphy = wdev->wiphy;
16202         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
16203
16204         ASSERT_WDEV_LOCK(wdev);
16205
16206         trace_cfg80211_ch_switch_notify(dev, chandef);
16207
16208         wdev->chandef = *chandef;
16209         wdev->preset_chandef = *chandef;
16210
16211         if (wdev->iftype == NL80211_IFTYPE_STATION &&
16212             !WARN_ON(!wdev->current_bss))
16213                 cfg80211_update_assoc_bss_entry(wdev, chandef->chan);
16214
16215         cfg80211_sched_dfs_chan_update(rdev);
16216
16217         nl80211_ch_switch_notify(rdev, dev, chandef, GFP_KERNEL,
16218                                  NL80211_CMD_CH_SWITCH_NOTIFY, 0);
16219 }
16220 EXPORT_SYMBOL(cfg80211_ch_switch_notify);
16221
16222 void cfg80211_ch_switch_started_notify(struct net_device *dev,
16223                                        struct cfg80211_chan_def *chandef,
16224                                        u8 count)
16225 {
16226         struct wireless_dev *wdev = dev->ieee80211_ptr;
16227         struct wiphy *wiphy = wdev->wiphy;
16228         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
16229
16230         trace_cfg80211_ch_switch_started_notify(dev, chandef);
16231
16232         nl80211_ch_switch_notify(rdev, dev, chandef, GFP_KERNEL,
16233                                  NL80211_CMD_CH_SWITCH_STARTED_NOTIFY, count);
16234 }
16235 EXPORT_SYMBOL(cfg80211_ch_switch_started_notify);
16236
16237 void
16238 nl80211_radar_notify(struct cfg80211_registered_device *rdev,
16239                      const struct cfg80211_chan_def *chandef,
16240                      enum nl80211_radar_event event,
16241                      struct net_device *netdev, gfp_t gfp)
16242 {
16243         struct sk_buff *msg;
16244         void *hdr;
16245
16246         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
16247         if (!msg)
16248                 return;
16249
16250         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_RADAR_DETECT);
16251         if (!hdr) {
16252                 nlmsg_free(msg);
16253                 return;
16254         }
16255
16256         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx))
16257                 goto nla_put_failure;
16258
16259         /* NOP and radar events don't need a netdev parameter */
16260         if (netdev) {
16261                 struct wireless_dev *wdev = netdev->ieee80211_ptr;
16262
16263                 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
16264                     nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
16265                                       NL80211_ATTR_PAD))
16266                         goto nla_put_failure;
16267         }
16268
16269         if (nla_put_u32(msg, NL80211_ATTR_RADAR_EVENT, event))
16270                 goto nla_put_failure;
16271
16272         if (nl80211_send_chandef(msg, chandef))
16273                 goto nla_put_failure;
16274
16275         genlmsg_end(msg, hdr);
16276
16277         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
16278                                 NL80211_MCGRP_MLME, gfp);
16279         return;
16280
16281  nla_put_failure:
16282         nlmsg_free(msg);
16283 }
16284
16285 void cfg80211_sta_opmode_change_notify(struct net_device *dev, const u8 *mac,
16286                                        struct sta_opmode_info *sta_opmode,
16287                                        gfp_t gfp)
16288 {
16289         struct sk_buff *msg;
16290         struct wireless_dev *wdev = dev->ieee80211_ptr;
16291         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
16292         void *hdr;
16293
16294         if (WARN_ON(!mac))
16295                 return;
16296
16297         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
16298         if (!msg)
16299                 return;
16300
16301         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_STA_OPMODE_CHANGED);
16302         if (!hdr) {
16303                 nlmsg_free(msg);
16304                 return;
16305         }
16306
16307         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx))
16308                 goto nla_put_failure;
16309
16310         if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex))
16311                 goto nla_put_failure;
16312
16313         if (nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, mac))
16314                 goto nla_put_failure;
16315
16316         if ((sta_opmode->changed & STA_OPMODE_SMPS_MODE_CHANGED) &&
16317             nla_put_u8(msg, NL80211_ATTR_SMPS_MODE, sta_opmode->smps_mode))
16318                 goto nla_put_failure;
16319
16320         if ((sta_opmode->changed & STA_OPMODE_MAX_BW_CHANGED) &&
16321             nla_put_u8(msg, NL80211_ATTR_CHANNEL_WIDTH, sta_opmode->bw))
16322                 goto nla_put_failure;
16323
16324         if ((sta_opmode->changed & STA_OPMODE_N_SS_CHANGED) &&
16325             nla_put_u8(msg, NL80211_ATTR_NSS, sta_opmode->rx_nss))
16326                 goto nla_put_failure;
16327
16328         genlmsg_end(msg, hdr);
16329
16330         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
16331                                 NL80211_MCGRP_MLME, gfp);
16332
16333         return;
16334
16335 nla_put_failure:
16336         nlmsg_free(msg);
16337 }
16338 EXPORT_SYMBOL(cfg80211_sta_opmode_change_notify);
16339
16340 void cfg80211_probe_status(struct net_device *dev, const u8 *addr,
16341                            u64 cookie, bool acked, s32 ack_signal,
16342                            bool is_valid_ack_signal, gfp_t gfp)
16343 {
16344         struct wireless_dev *wdev = dev->ieee80211_ptr;
16345         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
16346         struct sk_buff *msg;
16347         void *hdr;
16348
16349         trace_cfg80211_probe_status(dev, addr, cookie, acked);
16350
16351         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
16352
16353         if (!msg)
16354                 return;
16355
16356         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_PROBE_CLIENT);
16357         if (!hdr) {
16358                 nlmsg_free(msg);
16359                 return;
16360         }
16361
16362         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
16363             nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
16364             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr) ||
16365             nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, cookie,
16366                               NL80211_ATTR_PAD) ||
16367             (acked && nla_put_flag(msg, NL80211_ATTR_ACK)) ||
16368             (is_valid_ack_signal && nla_put_s32(msg, NL80211_ATTR_ACK_SIGNAL,
16369                                                 ack_signal)))
16370                 goto nla_put_failure;
16371
16372         genlmsg_end(msg, hdr);
16373
16374         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
16375                                 NL80211_MCGRP_MLME, gfp);
16376         return;
16377
16378  nla_put_failure:
16379         nlmsg_free(msg);
16380 }
16381 EXPORT_SYMBOL(cfg80211_probe_status);
16382
16383 void cfg80211_report_obss_beacon(struct wiphy *wiphy,
16384                                  const u8 *frame, size_t len,
16385                                  int freq, int sig_dbm)
16386 {
16387         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
16388         struct sk_buff *msg;
16389         void *hdr;
16390         struct cfg80211_beacon_registration *reg;
16391
16392         trace_cfg80211_report_obss_beacon(wiphy, frame, len, freq, sig_dbm);
16393
16394         spin_lock_bh(&rdev->beacon_registrations_lock);
16395         list_for_each_entry(reg, &rdev->beacon_registrations, list) {
16396                 msg = nlmsg_new(len + 100, GFP_ATOMIC);
16397                 if (!msg) {
16398                         spin_unlock_bh(&rdev->beacon_registrations_lock);
16399                         return;
16400                 }
16401
16402                 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_FRAME);
16403                 if (!hdr)
16404                         goto nla_put_failure;
16405
16406                 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
16407                     (freq &&
16408                      nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ, freq)) ||
16409                     (sig_dbm &&
16410                      nla_put_u32(msg, NL80211_ATTR_RX_SIGNAL_DBM, sig_dbm)) ||
16411                     nla_put(msg, NL80211_ATTR_FRAME, len, frame))
16412                         goto nla_put_failure;
16413
16414                 genlmsg_end(msg, hdr);
16415
16416                 genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, reg->nlportid);
16417         }
16418         spin_unlock_bh(&rdev->beacon_registrations_lock);
16419         return;
16420
16421  nla_put_failure:
16422         spin_unlock_bh(&rdev->beacon_registrations_lock);
16423         nlmsg_free(msg);
16424 }
16425 EXPORT_SYMBOL(cfg80211_report_obss_beacon);
16426
16427 #ifdef CONFIG_PM
16428 static int cfg80211_net_detect_results(struct sk_buff *msg,
16429                                        struct cfg80211_wowlan_wakeup *wakeup)
16430 {
16431         struct cfg80211_wowlan_nd_info *nd = wakeup->net_detect;
16432         struct nlattr *nl_results, *nl_match, *nl_freqs;
16433         int i, j;
16434
16435         nl_results = nla_nest_start_noflag(msg,
16436                                            NL80211_WOWLAN_TRIG_NET_DETECT_RESULTS);
16437         if (!nl_results)
16438                 return -EMSGSIZE;
16439
16440         for (i = 0; i < nd->n_matches; i++) {
16441                 struct cfg80211_wowlan_nd_match *match = nd->matches[i];
16442
16443                 nl_match = nla_nest_start_noflag(msg, i);
16444                 if (!nl_match)
16445                         break;
16446
16447                 /* The SSID attribute is optional in nl80211, but for
16448                  * simplicity reasons it's always present in the
16449                  * cfg80211 structure.  If a driver can't pass the
16450                  * SSID, that needs to be changed.  A zero length SSID
16451                  * is still a valid SSID (wildcard), so it cannot be
16452                  * used for this purpose.
16453                  */
16454                 if (nla_put(msg, NL80211_ATTR_SSID, match->ssid.ssid_len,
16455                             match->ssid.ssid)) {
16456                         nla_nest_cancel(msg, nl_match);
16457                         goto out;
16458                 }
16459
16460                 if (match->n_channels) {
16461                         nl_freqs = nla_nest_start_noflag(msg,
16462                                                          NL80211_ATTR_SCAN_FREQUENCIES);
16463                         if (!nl_freqs) {
16464                                 nla_nest_cancel(msg, nl_match);
16465                                 goto out;
16466                         }
16467
16468                         for (j = 0; j < match->n_channels; j++) {
16469                                 if (nla_put_u32(msg, j, match->channels[j])) {
16470                                         nla_nest_cancel(msg, nl_freqs);
16471                                         nla_nest_cancel(msg, nl_match);
16472                                         goto out;
16473                                 }
16474                         }
16475
16476                         nla_nest_end(msg, nl_freqs);
16477                 }
16478
16479                 nla_nest_end(msg, nl_match);
16480         }
16481
16482 out:
16483         nla_nest_end(msg, nl_results);
16484         return 0;
16485 }
16486
16487 void cfg80211_report_wowlan_wakeup(struct wireless_dev *wdev,
16488                                    struct cfg80211_wowlan_wakeup *wakeup,
16489                                    gfp_t gfp)
16490 {
16491         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
16492         struct sk_buff *msg;
16493         void *hdr;
16494         int size = 200;
16495
16496         trace_cfg80211_report_wowlan_wakeup(wdev->wiphy, wdev, wakeup);
16497
16498         if (wakeup)
16499                 size += wakeup->packet_present_len;
16500
16501         msg = nlmsg_new(size, gfp);
16502         if (!msg)
16503                 return;
16504
16505         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_SET_WOWLAN);
16506         if (!hdr)
16507                 goto free_msg;
16508
16509         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
16510             nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
16511                               NL80211_ATTR_PAD))
16512                 goto free_msg;
16513
16514         if (wdev->netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
16515                                         wdev->netdev->ifindex))
16516                 goto free_msg;
16517
16518         if (wakeup) {
16519                 struct nlattr *reasons;
16520
16521                 reasons = nla_nest_start_noflag(msg,
16522                                                 NL80211_ATTR_WOWLAN_TRIGGERS);
16523                 if (!reasons)
16524                         goto free_msg;
16525
16526                 if (wakeup->disconnect &&
16527                     nla_put_flag(msg, NL80211_WOWLAN_TRIG_DISCONNECT))
16528                         goto free_msg;
16529                 if (wakeup->magic_pkt &&
16530                     nla_put_flag(msg, NL80211_WOWLAN_TRIG_MAGIC_PKT))
16531                         goto free_msg;
16532                 if (wakeup->gtk_rekey_failure &&
16533                     nla_put_flag(msg, NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE))
16534                         goto free_msg;
16535                 if (wakeup->eap_identity_req &&
16536                     nla_put_flag(msg, NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST))
16537                         goto free_msg;
16538                 if (wakeup->four_way_handshake &&
16539                     nla_put_flag(msg, NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE))
16540                         goto free_msg;
16541                 if (wakeup->rfkill_release &&
16542                     nla_put_flag(msg, NL80211_WOWLAN_TRIG_RFKILL_RELEASE))
16543                         goto free_msg;
16544
16545                 if (wakeup->pattern_idx >= 0 &&
16546                     nla_put_u32(msg, NL80211_WOWLAN_TRIG_PKT_PATTERN,
16547                                 wakeup->pattern_idx))
16548                         goto free_msg;
16549
16550                 if (wakeup->tcp_match &&
16551                     nla_put_flag(msg, NL80211_WOWLAN_TRIG_WAKEUP_TCP_MATCH))
16552                         goto free_msg;
16553
16554                 if (wakeup->tcp_connlost &&
16555                     nla_put_flag(msg, NL80211_WOWLAN_TRIG_WAKEUP_TCP_CONNLOST))
16556                         goto free_msg;
16557
16558                 if (wakeup->tcp_nomoretokens &&
16559                     nla_put_flag(msg,
16560                                  NL80211_WOWLAN_TRIG_WAKEUP_TCP_NOMORETOKENS))
16561                         goto free_msg;
16562
16563                 if (wakeup->packet) {
16564                         u32 pkt_attr = NL80211_WOWLAN_TRIG_WAKEUP_PKT_80211;
16565                         u32 len_attr = NL80211_WOWLAN_TRIG_WAKEUP_PKT_80211_LEN;
16566
16567                         if (!wakeup->packet_80211) {
16568                                 pkt_attr =
16569                                         NL80211_WOWLAN_TRIG_WAKEUP_PKT_8023;
16570                                 len_attr =
16571                                         NL80211_WOWLAN_TRIG_WAKEUP_PKT_8023_LEN;
16572                         }
16573
16574                         if (wakeup->packet_len &&
16575                             nla_put_u32(msg, len_attr, wakeup->packet_len))
16576                                 goto free_msg;
16577
16578                         if (nla_put(msg, pkt_attr, wakeup->packet_present_len,
16579                                     wakeup->packet))
16580                                 goto free_msg;
16581                 }
16582
16583                 if (wakeup->net_detect &&
16584                     cfg80211_net_detect_results(msg, wakeup))
16585                                 goto free_msg;
16586
16587                 nla_nest_end(msg, reasons);
16588         }
16589
16590         genlmsg_end(msg, hdr);
16591
16592         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
16593                                 NL80211_MCGRP_MLME, gfp);
16594         return;
16595
16596  free_msg:
16597         nlmsg_free(msg);
16598 }
16599 EXPORT_SYMBOL(cfg80211_report_wowlan_wakeup);
16600 #endif
16601
16602 void cfg80211_tdls_oper_request(struct net_device *dev, const u8 *peer,
16603                                 enum nl80211_tdls_operation oper,
16604                                 u16 reason_code, gfp_t gfp)
16605 {
16606         struct wireless_dev *wdev = dev->ieee80211_ptr;
16607         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
16608         struct sk_buff *msg;
16609         void *hdr;
16610
16611         trace_cfg80211_tdls_oper_request(wdev->wiphy, dev, peer, oper,
16612                                          reason_code);
16613
16614         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
16615         if (!msg)
16616                 return;
16617
16618         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_TDLS_OPER);
16619         if (!hdr) {
16620                 nlmsg_free(msg);
16621                 return;
16622         }
16623
16624         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
16625             nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
16626             nla_put_u8(msg, NL80211_ATTR_TDLS_OPERATION, oper) ||
16627             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, peer) ||
16628             (reason_code > 0 &&
16629              nla_put_u16(msg, NL80211_ATTR_REASON_CODE, reason_code)))
16630                 goto nla_put_failure;
16631
16632         genlmsg_end(msg, hdr);
16633
16634         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
16635                                 NL80211_MCGRP_MLME, gfp);
16636         return;
16637
16638  nla_put_failure:
16639         nlmsg_free(msg);
16640 }
16641 EXPORT_SYMBOL(cfg80211_tdls_oper_request);
16642
16643 static int nl80211_netlink_notify(struct notifier_block * nb,
16644                                   unsigned long state,
16645                                   void *_notify)
16646 {
16647         struct netlink_notify *notify = _notify;
16648         struct cfg80211_registered_device *rdev;
16649         struct wireless_dev *wdev;
16650         struct cfg80211_beacon_registration *reg, *tmp;
16651
16652         if (state != NETLINK_URELEASE || notify->protocol != NETLINK_GENERIC)
16653                 return NOTIFY_DONE;
16654
16655         rcu_read_lock();
16656
16657         list_for_each_entry_rcu(rdev, &cfg80211_rdev_list, list) {
16658                 struct cfg80211_sched_scan_request *sched_scan_req;
16659
16660                 list_for_each_entry_rcu(sched_scan_req,
16661                                         &rdev->sched_scan_req_list,
16662                                         list) {
16663                         if (sched_scan_req->owner_nlportid == notify->portid) {
16664                                 sched_scan_req->nl_owner_dead = true;
16665                                 schedule_work(&rdev->sched_scan_stop_wk);
16666                         }
16667                 }
16668
16669                 list_for_each_entry_rcu(wdev, &rdev->wiphy.wdev_list, list) {
16670                         cfg80211_mlme_unregister_socket(wdev, notify->portid);
16671
16672                         if (wdev->owner_nlportid == notify->portid) {
16673                                 wdev->nl_owner_dead = true;
16674                                 schedule_work(&rdev->destroy_work);
16675                         } else if (wdev->conn_owner_nlportid == notify->portid) {
16676                                 schedule_work(&wdev->disconnect_wk);
16677                         }
16678
16679                         cfg80211_release_pmsr(wdev, notify->portid);
16680                 }
16681
16682                 spin_lock_bh(&rdev->beacon_registrations_lock);
16683                 list_for_each_entry_safe(reg, tmp, &rdev->beacon_registrations,
16684                                          list) {
16685                         if (reg->nlportid == notify->portid) {
16686                                 list_del(&reg->list);
16687                                 kfree(reg);
16688                                 break;
16689                         }
16690                 }
16691                 spin_unlock_bh(&rdev->beacon_registrations_lock);
16692         }
16693
16694         rcu_read_unlock();
16695
16696         /*
16697          * It is possible that the user space process that is controlling the
16698          * indoor setting disappeared, so notify the regulatory core.
16699          */
16700         regulatory_netlink_notify(notify->portid);
16701         return NOTIFY_OK;
16702 }
16703
16704 static struct notifier_block nl80211_netlink_notifier = {
16705         .notifier_call = nl80211_netlink_notify,
16706 };
16707
16708 void cfg80211_ft_event(struct net_device *netdev,
16709                        struct cfg80211_ft_event_params *ft_event)
16710 {
16711         struct wiphy *wiphy = netdev->ieee80211_ptr->wiphy;
16712         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
16713         struct sk_buff *msg;
16714         void *hdr;
16715
16716         trace_cfg80211_ft_event(wiphy, netdev, ft_event);
16717
16718         if (!ft_event->target_ap)
16719                 return;
16720
16721         msg = nlmsg_new(100 + ft_event->ies_len + ft_event->ric_ies_len,
16722                         GFP_KERNEL);
16723         if (!msg)
16724                 return;
16725
16726         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_FT_EVENT);
16727         if (!hdr)
16728                 goto out;
16729
16730         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
16731             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
16732             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, ft_event->target_ap))
16733                 goto out;
16734
16735         if (ft_event->ies &&
16736             nla_put(msg, NL80211_ATTR_IE, ft_event->ies_len, ft_event->ies))
16737                 goto out;
16738         if (ft_event->ric_ies &&
16739             nla_put(msg, NL80211_ATTR_IE_RIC, ft_event->ric_ies_len,
16740                     ft_event->ric_ies))
16741                 goto out;
16742
16743         genlmsg_end(msg, hdr);
16744
16745         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
16746                                 NL80211_MCGRP_MLME, GFP_KERNEL);
16747         return;
16748  out:
16749         nlmsg_free(msg);
16750 }
16751 EXPORT_SYMBOL(cfg80211_ft_event);
16752
16753 void cfg80211_crit_proto_stopped(struct wireless_dev *wdev, gfp_t gfp)
16754 {
16755         struct cfg80211_registered_device *rdev;
16756         struct sk_buff *msg;
16757         void *hdr;
16758         u32 nlportid;
16759
16760         rdev = wiphy_to_rdev(wdev->wiphy);
16761         if (!rdev->crit_proto_nlportid)
16762                 return;
16763
16764         nlportid = rdev->crit_proto_nlportid;
16765         rdev->crit_proto_nlportid = 0;
16766
16767         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
16768         if (!msg)
16769                 return;
16770
16771         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_CRIT_PROTOCOL_STOP);
16772         if (!hdr)
16773                 goto nla_put_failure;
16774
16775         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
16776             nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
16777                               NL80211_ATTR_PAD))
16778                 goto nla_put_failure;
16779
16780         genlmsg_end(msg, hdr);
16781
16782         genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, nlportid);
16783         return;
16784
16785  nla_put_failure:
16786         nlmsg_free(msg);
16787 }
16788 EXPORT_SYMBOL(cfg80211_crit_proto_stopped);
16789
16790 void nl80211_send_ap_stopped(struct wireless_dev *wdev)
16791 {
16792         struct wiphy *wiphy = wdev->wiphy;
16793         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
16794         struct sk_buff *msg;
16795         void *hdr;
16796
16797         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
16798         if (!msg)
16799                 return;
16800
16801         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_STOP_AP);
16802         if (!hdr)
16803                 goto out;
16804
16805         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
16806             nla_put_u32(msg, NL80211_ATTR_IFINDEX, wdev->netdev->ifindex) ||
16807             nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
16808                               NL80211_ATTR_PAD))
16809                 goto out;
16810
16811         genlmsg_end(msg, hdr);
16812
16813         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(wiphy), msg, 0,
16814                                 NL80211_MCGRP_MLME, GFP_KERNEL);
16815         return;
16816  out:
16817         nlmsg_free(msg);
16818 }
16819
16820 int cfg80211_external_auth_request(struct net_device *dev,
16821                                    struct cfg80211_external_auth_params *params,
16822                                    gfp_t gfp)
16823 {
16824         struct wireless_dev *wdev = dev->ieee80211_ptr;
16825         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
16826         struct sk_buff *msg;
16827         void *hdr;
16828
16829         if (!wdev->conn_owner_nlportid)
16830                 return -EINVAL;
16831
16832         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
16833         if (!msg)
16834                 return -ENOMEM;
16835
16836         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_EXTERNAL_AUTH);
16837         if (!hdr)
16838                 goto nla_put_failure;
16839
16840         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
16841             nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
16842             nla_put_u32(msg, NL80211_ATTR_AKM_SUITES, params->key_mgmt_suite) ||
16843             nla_put_u32(msg, NL80211_ATTR_EXTERNAL_AUTH_ACTION,
16844                         params->action) ||
16845             nla_put(msg, NL80211_ATTR_BSSID, ETH_ALEN, params->bssid) ||
16846             nla_put(msg, NL80211_ATTR_SSID, params->ssid.ssid_len,
16847                     params->ssid.ssid))
16848                 goto nla_put_failure;
16849
16850         genlmsg_end(msg, hdr);
16851         genlmsg_unicast(wiphy_net(&rdev->wiphy), msg,
16852                         wdev->conn_owner_nlportid);
16853         return 0;
16854
16855  nla_put_failure:
16856         nlmsg_free(msg);
16857         return -ENOBUFS;
16858 }
16859 EXPORT_SYMBOL(cfg80211_external_auth_request);
16860
16861 void cfg80211_update_owe_info_event(struct net_device *netdev,
16862                                     struct cfg80211_update_owe_info *owe_info,
16863                                     gfp_t gfp)
16864 {
16865         struct wiphy *wiphy = netdev->ieee80211_ptr->wiphy;
16866         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
16867         struct sk_buff *msg;
16868         void *hdr;
16869
16870         trace_cfg80211_update_owe_info_event(wiphy, netdev, owe_info);
16871
16872         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
16873         if (!msg)
16874                 return;
16875
16876         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_UPDATE_OWE_INFO);
16877         if (!hdr)
16878                 goto nla_put_failure;
16879
16880         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
16881             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
16882             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, owe_info->peer))
16883                 goto nla_put_failure;
16884
16885         if (!owe_info->ie_len ||
16886             nla_put(msg, NL80211_ATTR_IE, owe_info->ie_len, owe_info->ie))
16887                 goto nla_put_failure;
16888
16889         genlmsg_end(msg, hdr);
16890
16891         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
16892                                 NL80211_MCGRP_MLME, gfp);
16893         return;
16894
16895 nla_put_failure:
16896         genlmsg_cancel(msg, hdr);
16897         nlmsg_free(msg);
16898 }
16899 EXPORT_SYMBOL(cfg80211_update_owe_info_event);
16900
16901 /* initialisation/exit functions */
16902
16903 int __init nl80211_init(void)
16904 {
16905         int err;
16906
16907         err = genl_register_family(&nl80211_fam);
16908         if (err)
16909                 return err;
16910
16911         err = netlink_register_notifier(&nl80211_netlink_notifier);
16912         if (err)
16913                 goto err_out;
16914
16915         return 0;
16916  err_out:
16917         genl_unregister_family(&nl80211_fam);
16918         return err;
16919 }
16920
16921 void nl80211_exit(void)
16922 {
16923         netlink_unregister_notifier(&nl80211_netlink_notifier);
16924         genl_unregister_family(&nl80211_fam);
16925 }