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_60GHZ] = { .type = NLA_S32 },
 681 };
 682
 683 static const struct nla_policy
 684 nl80211_match_policy[NL80211_SCHED_SCAN_MATCH_ATTR_MAX + 1] = {
 685         [NL80211_SCHED_SCAN_MATCH_ATTR_SSID] = { .type = NLA_BINARY,
 686                                                  .len = IEEE80211_MAX_SSID_LEN },
 687         [NL80211_SCHED_SCAN_MATCH_ATTR_BSSID] = {
 688                 .type = NLA_EXACT_LEN_WARN,
 689                 .len = ETH_ALEN
 690         },
 691         [NL80211_SCHED_SCAN_MATCH_ATTR_RSSI] = { .type = NLA_U32 },
 692         [NL80211_SCHED_SCAN_MATCH_PER_BAND_RSSI] =
 693                 NLA_POLICY_NESTED(nl80211_match_band_rssi_policy),
 694 };
 695
 696 static const struct nla_policy
 697 nl80211_plan_policy[NL80211_SCHED_SCAN_PLAN_MAX + 1] = {
 698         [NL80211_SCHED_SCAN_PLAN_INTERVAL] = { .type = NLA_U32 },
 699         [NL80211_SCHED_SCAN_PLAN_ITERATIONS] = { .type = NLA_U32 },
 700 };
 701
 702 static const struct nla_policy
 703 nl80211_bss_select_policy[NL80211_BSS_SELECT_ATTR_MAX + 1] = {
 704         [NL80211_BSS_SELECT_ATTR_RSSI] = { .type = NLA_FLAG },
 705         [NL80211_BSS_SELECT_ATTR_BAND_PREF] = { .type = NLA_U32 },
 706         [NL80211_BSS_SELECT_ATTR_RSSI_ADJUST] = {
 707                 .len = sizeof(struct nl80211_bss_select_rssi_adjust)
 708         },
 709 };
 710
 711 /* policy for NAN function attributes */
 712 static const struct nla_policy
 713 nl80211_nan_func_policy[NL80211_NAN_FUNC_ATTR_MAX + 1] = {
 714         [NL80211_NAN_FUNC_TYPE] = { .type = NLA_U8 },
 715         [NL80211_NAN_FUNC_SERVICE_ID] = {
 716                                     .len = NL80211_NAN_FUNC_SERVICE_ID_LEN },
 717         [NL80211_NAN_FUNC_PUBLISH_TYPE] = { .type = NLA_U8 },
 718         [NL80211_NAN_FUNC_PUBLISH_BCAST] = { .type = NLA_FLAG },
 719         [NL80211_NAN_FUNC_SUBSCRIBE_ACTIVE] = { .type = NLA_FLAG },
 720         [NL80211_NAN_FUNC_FOLLOW_UP_ID] = { .type = NLA_U8 },
 721         [NL80211_NAN_FUNC_FOLLOW_UP_REQ_ID] = { .type = NLA_U8 },
 722         [NL80211_NAN_FUNC_FOLLOW_UP_DEST] = {
 723                 .type = NLA_EXACT_LEN_WARN,
 724                 .len = ETH_ALEN
 725         },
 726         [NL80211_NAN_FUNC_CLOSE_RANGE] = { .type = NLA_FLAG },
 727         [NL80211_NAN_FUNC_TTL] = { .type = NLA_U32 },
 728         [NL80211_NAN_FUNC_SERVICE_INFO] = { .type = NLA_BINARY,
 729                         .len = NL80211_NAN_FUNC_SERVICE_SPEC_INFO_MAX_LEN },
 730         [NL80211_NAN_FUNC_SRF] = { .type = NLA_NESTED },
 731         [NL80211_NAN_FUNC_RX_MATCH_FILTER] = { .type = NLA_NESTED },
 732         [NL80211_NAN_FUNC_TX_MATCH_FILTER] = { .type = NLA_NESTED },
 733         [NL80211_NAN_FUNC_INSTANCE_ID] = { .type = NLA_U8 },
 734         [NL80211_NAN_FUNC_TERM_REASON] = { .type = NLA_U8 },
 735 };
 736
 737 /* policy for Service Response Filter attributes */
 738 static const struct nla_policy
 739 nl80211_nan_srf_policy[NL80211_NAN_SRF_ATTR_MAX + 1] = {
 740         [NL80211_NAN_SRF_INCLUDE] = { .type = NLA_FLAG },
 741         [NL80211_NAN_SRF_BF] = { .type = NLA_BINARY,
 742                                  .len =  NL80211_NAN_FUNC_SRF_MAX_LEN },
 743         [NL80211_NAN_SRF_BF_IDX] = { .type = NLA_U8 },
 744         [NL80211_NAN_SRF_MAC_ADDRS] = { .type = NLA_NESTED },
 745 };
 746
 747 /* policy for packet pattern attributes */
 748 static const struct nla_policy
 749 nl80211_packet_pattern_policy[MAX_NL80211_PKTPAT + 1] = {
 750         [NL80211_PKTPAT_MASK] = { .type = NLA_BINARY, },
 751         [NL80211_PKTPAT_PATTERN] = { .type = NLA_BINARY, },
 752         [NL80211_PKTPAT_OFFSET] = { .type = NLA_U32 },
 753 };
 754
 755 int nl80211_prepare_wdev_dump(struct netlink_callback *cb,
 756                               struct cfg80211_registered_device **rdev,
 757                               struct wireless_dev **wdev)
 758 {
 759         int err;
 760
 761         if (!cb->args[0]) {
 762                 struct nlattr **attrbuf;
 763
 764                 attrbuf = kcalloc(NUM_NL80211_ATTR, sizeof(*attrbuf),
 765                                   GFP_KERNEL);
 766                 if (!attrbuf)
 767                         return -ENOMEM;
 768
 769                 err = nlmsg_parse_deprecated(cb->nlh,
 770                                              GENL_HDRLEN + nl80211_fam.hdrsize,
 771                                              attrbuf, nl80211_fam.maxattr,
 772                                              nl80211_policy, NULL);
 773                 if (err) {
 774                         kfree(attrbuf);
 775                         return err;
 776                 }
 777
 778                 *wdev = __cfg80211_wdev_from_attrs(sock_net(cb->skb->sk),
 779                                                    attrbuf);
 780                 kfree(attrbuf);
 781                 if (IS_ERR(*wdev))
 782                         return PTR_ERR(*wdev);
 783                 *rdev = wiphy_to_rdev((*wdev)->wiphy);
 784                 /* 0 is the first index - add 1 to parse only once */
 785                 cb->args[0] = (*rdev)->wiphy_idx + 1;
 786                 cb->args[1] = (*wdev)->identifier;
 787         } else {
 788                 /* subtract the 1 again here */
 789                 struct wiphy *wiphy = wiphy_idx_to_wiphy(cb->args[0] - 1);
 790                 struct wireless_dev *tmp;
 791
 792                 if (!wiphy)
 793                         return -ENODEV;
 794                 *rdev = wiphy_to_rdev(wiphy);
 795                 *wdev = NULL;
 796
 797                 list_for_each_entry(tmp, &(*rdev)->wiphy.wdev_list, list) {
 798                         if (tmp->identifier == cb->args[1]) {
 799                                 *wdev = tmp;
 800                                 break;
 801                         }
 802                 }
 803
 804                 if (!*wdev)
 805                         return -ENODEV;
 806         }
 807
 808         return 0;
 809 }
 810
 811 /* message building helper */
 812 void *nl80211hdr_put(struct sk_buff *skb, u32 portid, u32 seq,
 813                      int flags, u8 cmd)
 814 {
 815         /* since there is no private header just add the generic one */
 816         return genlmsg_put(skb, portid, seq, &nl80211_fam, flags, cmd);
 817 }
 818
 819 static int nl80211_msg_put_wmm_rules(struct sk_buff *msg,
 820                                      const struct ieee80211_reg_rule *rule)
 821 {
 822         int j;
 823         struct nlattr *nl_wmm_rules =
 824                 nla_nest_start_noflag(msg, NL80211_FREQUENCY_ATTR_WMM);
 825
 826         if (!nl_wmm_rules)
 827                 goto nla_put_failure;
 828
 829         for (j = 0; j < IEEE80211_NUM_ACS; j++) {
 830                 struct nlattr *nl_wmm_rule = nla_nest_start_noflag(msg, j);
 831
 832                 if (!nl_wmm_rule)
 833                         goto nla_put_failure;
 834
 835                 if (nla_put_u16(msg, NL80211_WMMR_CW_MIN,
 836                                 rule->wmm_rule.client[j].cw_min) ||
 837                     nla_put_u16(msg, NL80211_WMMR_CW_MAX,
 838                                 rule->wmm_rule.client[j].cw_max) ||
 839                     nla_put_u8(msg, NL80211_WMMR_AIFSN,
 840                                rule->wmm_rule.client[j].aifsn) ||
 841                     nla_put_u16(msg, NL80211_WMMR_TXOP,
 842                                 rule->wmm_rule.client[j].cot))
 843                         goto nla_put_failure;
 844
 845                 nla_nest_end(msg, nl_wmm_rule);
 846         }
 847         nla_nest_end(msg, nl_wmm_rules);
 848
 849         return 0;
 850
 851 nla_put_failure:
 852         return -ENOBUFS;
 853 }
 854
 855 static int nl80211_msg_put_channel(struct sk_buff *msg, struct wiphy *wiphy,
 856                                    struct ieee80211_channel *chan,
 857                                    bool large)
 858 {
 859         /* Some channels must be completely excluded from the
 860          * list to protect old user-space tools from breaking
 861          */
 862         if (!large && chan->flags &
 863             (IEEE80211_CHAN_NO_10MHZ | IEEE80211_CHAN_NO_20MHZ))
 864                 return 0;
 865
 866         if (nla_put_u32(msg, NL80211_FREQUENCY_ATTR_FREQ,
 867                         chan->center_freq))
 868                 goto nla_put_failure;
 869
 870         if ((chan->flags & IEEE80211_CHAN_DISABLED) &&
 871             nla_put_flag(msg, NL80211_FREQUENCY_ATTR_DISABLED))
 872                 goto nla_put_failure;
 873         if (chan->flags & IEEE80211_CHAN_NO_IR) {
 874                 if (nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_IR))
 875                         goto nla_put_failure;
 876                 if (nla_put_flag(msg, __NL80211_FREQUENCY_ATTR_NO_IBSS))
 877                         goto nla_put_failure;
 878         }
 879         if (chan->flags & IEEE80211_CHAN_RADAR) {
 880                 if (nla_put_flag(msg, NL80211_FREQUENCY_ATTR_RADAR))
 881                         goto nla_put_failure;
 882                 if (large) {
 883                         u32 time;
 884
 885                         time = elapsed_jiffies_msecs(chan->dfs_state_entered);
 886
 887                         if (nla_put_u32(msg, NL80211_FREQUENCY_ATTR_DFS_STATE,
 888                                         chan->dfs_state))
 889                                 goto nla_put_failure;
 890                         if (nla_put_u32(msg, NL80211_FREQUENCY_ATTR_DFS_TIME,
 891                                         time))
 892                                 goto nla_put_failure;
 893                         if (nla_put_u32(msg,
 894                                         NL80211_FREQUENCY_ATTR_DFS_CAC_TIME,
 895                                         chan->dfs_cac_ms))
 896                                 goto nla_put_failure;
 897                 }
 898         }
 899
 900         if (large) {
 901                 if ((chan->flags & IEEE80211_CHAN_NO_HT40MINUS) &&
 902                     nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_HT40_MINUS))
 903                         goto nla_put_failure;
 904                 if ((chan->flags & IEEE80211_CHAN_NO_HT40PLUS) &&
 905                     nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_HT40_PLUS))
 906                         goto nla_put_failure;
 907                 if ((chan->flags & IEEE80211_CHAN_NO_80MHZ) &&
 908                     nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_80MHZ))
 909                         goto nla_put_failure;
 910                 if ((chan->flags & IEEE80211_CHAN_NO_160MHZ) &&
 911                     nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_160MHZ))
 912                         goto nla_put_failure;
 913                 if ((chan->flags & IEEE80211_CHAN_INDOOR_ONLY) &&
 914                     nla_put_flag(msg, NL80211_FREQUENCY_ATTR_INDOOR_ONLY))
 915                         goto nla_put_failure;
 916                 if ((chan->flags & IEEE80211_CHAN_IR_CONCURRENT) &&
 917                     nla_put_flag(msg, NL80211_FREQUENCY_ATTR_IR_CONCURRENT))
 918                         goto nla_put_failure;
 919                 if ((chan->flags & IEEE80211_CHAN_NO_20MHZ) &&
 920                     nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_20MHZ))
 921                         goto nla_put_failure;
 922                 if ((chan->flags & IEEE80211_CHAN_NO_10MHZ) &&
 923                     nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_10MHZ))
 924                         goto nla_put_failure;
 925         }
 926
 927         if (nla_put_u32(msg, NL80211_FREQUENCY_ATTR_MAX_TX_POWER,
 928                         DBM_TO_MBM(chan->max_power)))
 929                 goto nla_put_failure;
 930
 931         if (large) {
 932                 const struct ieee80211_reg_rule *rule =
 933                         freq_reg_info(wiphy, MHZ_TO_KHZ(chan->center_freq));
 934
 935                 if (!IS_ERR_OR_NULL(rule) && rule->has_wmm) {
 936                         if (nl80211_msg_put_wmm_rules(msg, rule))
 937                                 goto nla_put_failure;
 938                 }
 939         }
 940
 941         return 0;
 942
 943  nla_put_failure:
 944         return -ENOBUFS;
 945 }
 946
 947 static bool nl80211_put_txq_stats(struct sk_buff *msg,
 948                                   struct cfg80211_txq_stats *txqstats,
 949                                   int attrtype)
 950 {
 951         struct nlattr *txqattr;
 952
 953 #define PUT_TXQVAL_U32(attr, memb) do {                                   \
 954         if (txqstats->filled & BIT(NL80211_TXQ_STATS_ ## attr) &&         \
 955             nla_put_u32(msg, NL80211_TXQ_STATS_ ## attr, txqstats->memb)) \
 956                 return false;                                             \
 957         } while (0)
 958
 959         txqattr = nla_nest_start_noflag(msg, attrtype);
 960         if (!txqattr)
 961                 return false;
 962
 963         PUT_TXQVAL_U32(BACKLOG_BYTES, backlog_bytes);
 964         PUT_TXQVAL_U32(BACKLOG_PACKETS, backlog_packets);
 965         PUT_TXQVAL_U32(FLOWS, flows);
 966         PUT_TXQVAL_U32(DROPS, drops);
 967         PUT_TXQVAL_U32(ECN_MARKS, ecn_marks);
 968         PUT_TXQVAL_U32(OVERLIMIT, overlimit);
 969         PUT_TXQVAL_U32(OVERMEMORY, overmemory);
 970         PUT_TXQVAL_U32(COLLISIONS, collisions);
 971         PUT_TXQVAL_U32(TX_BYTES, tx_bytes);
 972         PUT_TXQVAL_U32(TX_PACKETS, tx_packets);
 973         PUT_TXQVAL_U32(MAX_FLOWS, max_flows);
 974         nla_nest_end(msg, txqattr);
 975
 976 #undef PUT_TXQVAL_U32
 977         return true;
 978 }
 979
 980 /* netlink command implementations */
 981
 982 struct key_parse {
 983         struct key_params p;
 984         int idx;
 985         int type;
 986         bool def, defmgmt;
 987         bool def_uni, def_multi;
 988 };
 989
 990 static int nl80211_parse_key_new(struct genl_info *info, struct nlattr *key,
 991                                  struct key_parse *k)
 992 {
 993         struct nlattr *tb[NL80211_KEY_MAX + 1];
 994         int err = nla_parse_nested_deprecated(tb, NL80211_KEY_MAX, key,
 995                                               nl80211_key_policy,
 996                                               info->extack);
 997         if (err)
 998                 return err;
 999
1000         k->def = !!tb[NL80211_KEY_DEFAULT];
1001         k->defmgmt = !!tb[NL80211_KEY_DEFAULT_MGMT];
1002
1003         if (k->def) {
1004                 k->def_uni = true;
1005                 k->def_multi = true;
1006         }
1007         if (k->defmgmt)
1008                 k->def_multi = true;
1009
1010         if (tb[NL80211_KEY_IDX])
1011                 k->idx = nla_get_u8(tb[NL80211_KEY_IDX]);
1012
1013         if (tb[NL80211_KEY_DATA]) {
1014                 k->p.key = nla_data(tb[NL80211_KEY_DATA]);
1015                 k->p.key_len = nla_len(tb[NL80211_KEY_DATA]);
1016         }
1017
1018         if (tb[NL80211_KEY_SEQ]) {
1019                 k->p.seq = nla_data(tb[NL80211_KEY_SEQ]);
1020                 k->p.seq_len = nla_len(tb[NL80211_KEY_SEQ]);
1021         }
1022
1023         if (tb[NL80211_KEY_CIPHER])
1024                 k->p.cipher = nla_get_u32(tb[NL80211_KEY_CIPHER]);
1025
1026         if (tb[NL80211_KEY_TYPE])
1027                 k->type = nla_get_u32(tb[NL80211_KEY_TYPE]);
1028
1029         if (tb[NL80211_KEY_DEFAULT_TYPES]) {
1030                 struct nlattr *kdt[NUM_NL80211_KEY_DEFAULT_TYPES];
1031
1032                 err = nla_parse_nested_deprecated(kdt,
1033                                                   NUM_NL80211_KEY_DEFAULT_TYPES - 1,
1034                                                   tb[NL80211_KEY_DEFAULT_TYPES],
1035                                                   nl80211_key_default_policy,
1036                                                   info->extack);
1037                 if (err)
1038                         return err;
1039
1040                 k->def_uni = kdt[NL80211_KEY_DEFAULT_TYPE_UNICAST];
1041                 k->def_multi = kdt[NL80211_KEY_DEFAULT_TYPE_MULTICAST];
1042         }
1043
1044         if (tb[NL80211_KEY_MODE])
1045                 k->p.mode = nla_get_u8(tb[NL80211_KEY_MODE]);
1046
1047         return 0;
1048 }
1049
1050 static int nl80211_parse_key_old(struct genl_info *info, struct key_parse *k)
1051 {
1052         if (info->attrs[NL80211_ATTR_KEY_DATA]) {
1053                 k->p.key = nla_data(info->attrs[NL80211_ATTR_KEY_DATA]);
1054                 k->p.key_len = nla_len(info->attrs[NL80211_ATTR_KEY_DATA]);
1055         }
1056
1057         if (info->attrs[NL80211_ATTR_KEY_SEQ]) {
1058                 k->p.seq = nla_data(info->attrs[NL80211_ATTR_KEY_SEQ]);
1059                 k->p.seq_len = nla_len(info->attrs[NL80211_ATTR_KEY_SEQ]);
1060         }
1061
1062         if (info->attrs[NL80211_ATTR_KEY_IDX])
1063                 k->idx = nla_get_u8(info->attrs[NL80211_ATTR_KEY_IDX]);
1064
1065         if (info->attrs[NL80211_ATTR_KEY_CIPHER])
1066                 k->p.cipher = nla_get_u32(info->attrs[NL80211_ATTR_KEY_CIPHER]);
1067
1068         k->def = !!info->attrs[NL80211_ATTR_KEY_DEFAULT];
1069         k->defmgmt = !!info->attrs[NL80211_ATTR_KEY_DEFAULT_MGMT];
1070
1071         if (k->def) {
1072                 k->def_uni = true;
1073                 k->def_multi = true;
1074         }
1075         if (k->defmgmt)
1076                 k->def_multi = true;
1077
1078         if (info->attrs[NL80211_ATTR_KEY_TYPE])
1079                 k->type = nla_get_u32(info->attrs[NL80211_ATTR_KEY_TYPE]);
1080
1081         if (info->attrs[NL80211_ATTR_KEY_DEFAULT_TYPES]) {
1082                 struct nlattr *kdt[NUM_NL80211_KEY_DEFAULT_TYPES];
1083                 int err = nla_parse_nested_deprecated(kdt,
1084                                                       NUM_NL80211_KEY_DEFAULT_TYPES - 1,
1085                                                       info->attrs[NL80211_ATTR_KEY_DEFAULT_TYPES],
1086                                                       nl80211_key_default_policy,
1087                                                       info->extack);
1088                 if (err)
1089                         return err;
1090
1091                 k->def_uni = kdt[NL80211_KEY_DEFAULT_TYPE_UNICAST];
1092                 k->def_multi = kdt[NL80211_KEY_DEFAULT_TYPE_MULTICAST];
1093         }
1094
1095         return 0;
1096 }
1097
1098 static int nl80211_parse_key(struct genl_info *info, struct key_parse *k)
1099 {
1100         int err;
1101
1102         memset(k, 0, sizeof(*k));
1103         k->idx = -1;
1104         k->type = -1;
1105
1106         if (info->attrs[NL80211_ATTR_KEY])
1107                 err = nl80211_parse_key_new(info, info->attrs[NL80211_ATTR_KEY], k);
1108         else
1109                 err = nl80211_parse_key_old(info, k);
1110
1111         if (err)
1112                 return err;
1113
1114         if (k->def && k->defmgmt) {
1115                 GENL_SET_ERR_MSG(info, "key with def && defmgmt is invalid");
1116                 return -EINVAL;
1117         }
1118
1119         if (k->defmgmt) {
1120                 if (k->def_uni || !k->def_multi) {
1121                         GENL_SET_ERR_MSG(info, "defmgmt key must be mcast");
1122                         return -EINVAL;
1123                 }
1124         }
1125
1126         if (k->idx != -1) {
1127                 if (k->defmgmt) {
1128                         if (k->idx < 4 || k->idx > 5) {
1129                                 GENL_SET_ERR_MSG(info,
1130                                                  "defmgmt key idx not 4 or 5");
1131                                 return -EINVAL;
1132                         }
1133                 } else if (k->def) {
1134                         if (k->idx < 0 || k->idx > 3) {
1135                                 GENL_SET_ERR_MSG(info, "def key idx not 0-3");
1136                                 return -EINVAL;
1137                         }
1138                 } else {
1139                         if (k->idx < 0 || k->idx > 5) {
1140                                 GENL_SET_ERR_MSG(info, "key idx not 0-5");
1141                                 return -EINVAL;
1142                         }
1143                 }
1144         }
1145
1146         return 0;
1147 }
1148
1149 static struct cfg80211_cached_keys *
1150 nl80211_parse_connkeys(struct cfg80211_registered_device *rdev,
1151                        struct genl_info *info, bool *no_ht)
1152 {
1153         struct nlattr *keys = info->attrs[NL80211_ATTR_KEYS];
1154         struct key_parse parse;
1155         struct nlattr *key;
1156         struct cfg80211_cached_keys *result;
1157         int rem, err, def = 0;
1158         bool have_key = false;
1159
1160         nla_for_each_nested(key, keys, rem) {
1161                 have_key = true;
1162                 break;
1163         }
1164
1165         if (!have_key)
1166                 return NULL;
1167
1168         result = kzalloc(sizeof(*result), GFP_KERNEL);
1169         if (!result)
1170                 return ERR_PTR(-ENOMEM);
1171
1172         result->def = -1;
1173
1174         nla_for_each_nested(key, keys, rem) {
1175                 memset(&parse, 0, sizeof(parse));
1176                 parse.idx = -1;
1177
1178                 err = nl80211_parse_key_new(info, key, &parse);
1179                 if (err)
1180                         goto error;
1181                 err = -EINVAL;
1182                 if (!parse.p.key)
1183                         goto error;
1184                 if (parse.idx < 0 || parse.idx > 3) {
1185                         GENL_SET_ERR_MSG(info, "key index out of range [0-3]");
1186                         goto error;
1187                 }
1188                 if (parse.def) {
1189                         if (def) {
1190                                 GENL_SET_ERR_MSG(info,
1191                                                  "only one key can be default");
1192                                 goto error;
1193                         }
1194                         def = 1;
1195                         result->def = parse.idx;
1196                         if (!parse.def_uni || !parse.def_multi)
1197                                 goto error;
1198                 } else if (parse.defmgmt)
1199                         goto error;
1200                 err = cfg80211_validate_key_settings(rdev, &parse.p,
1201                                                      parse.idx, false, NULL);
1202                 if (err)
1203                         goto error;
1204                 if (parse.p.cipher != WLAN_CIPHER_SUITE_WEP40 &&
1205                     parse.p.cipher != WLAN_CIPHER_SUITE_WEP104) {
1206                         GENL_SET_ERR_MSG(info, "connect key must be WEP");
1207                         err = -EINVAL;
1208                         goto error;
1209                 }
1210                 result->params[parse.idx].cipher = parse.p.cipher;
1211                 result->params[parse.idx].key_len = parse.p.key_len;
1212                 result->params[parse.idx].key = result->data[parse.idx];
1213                 memcpy(result->data[parse.idx], parse.p.key, parse.p.key_len);
1214
1215                 /* must be WEP key if we got here */
1216                 if (no_ht)
1217                         *no_ht = true;
1218         }
1219
1220         if (result->def < 0) {
1221                 err = -EINVAL;
1222                 GENL_SET_ERR_MSG(info, "need a default/TX key");
1223                 goto error;
1224         }
1225
1226         return result;
1227  error:
1228         kfree(result);
1229         return ERR_PTR(err);
1230 }
1231
1232 static int nl80211_key_allowed(struct wireless_dev *wdev)
1233 {
1234         ASSERT_WDEV_LOCK(wdev);
1235
1236         switch (wdev->iftype) {
1237         case NL80211_IFTYPE_AP:
1238         case NL80211_IFTYPE_AP_VLAN:
1239         case NL80211_IFTYPE_P2P_GO:
1240         case NL80211_IFTYPE_MESH_POINT:
1241                 break;
1242         case NL80211_IFTYPE_ADHOC:
1243         case NL80211_IFTYPE_STATION:
1244         case NL80211_IFTYPE_P2P_CLIENT:
1245                 if (!wdev->current_bss)
1246                         return -ENOLINK;
1247                 break;
1248         case NL80211_IFTYPE_UNSPECIFIED:
1249         case NL80211_IFTYPE_OCB:
1250         case NL80211_IFTYPE_MONITOR:
1251         case NL80211_IFTYPE_NAN:
1252         case NL80211_IFTYPE_P2P_DEVICE:
1253         case NL80211_IFTYPE_WDS:
1254         case NUM_NL80211_IFTYPES:
1255                 return -EINVAL;
1256         }
1257
1258         return 0;
1259 }
1260
1261 static struct ieee80211_channel *nl80211_get_valid_chan(struct wiphy *wiphy,
1262                                                         struct nlattr *tb)
1263 {
1264         struct ieee80211_channel *chan;
1265
1266         if (tb == NULL)
1267                 return NULL;
1268         chan = ieee80211_get_channel(wiphy, nla_get_u32(tb));
1269         if (!chan || chan->flags & IEEE80211_CHAN_DISABLED)
1270                 return NULL;
1271         return chan;
1272 }
1273
1274 static int nl80211_put_iftypes(struct sk_buff *msg, u32 attr, u16 ifmodes)
1275 {
1276         struct nlattr *nl_modes = nla_nest_start_noflag(msg, attr);
1277         int i;
1278
1279         if (!nl_modes)
1280                 goto nla_put_failure;
1281
1282         i = 0;
1283         while (ifmodes) {
1284                 if ((ifmodes & 1) && nla_put_flag(msg, i))
1285                         goto nla_put_failure;
1286                 ifmodes >>= 1;
1287                 i++;
1288         }
1289
1290         nla_nest_end(msg, nl_modes);
1291         return 0;
1292
1293 nla_put_failure:
1294         return -ENOBUFS;
1295 }
1296
1297 static int nl80211_put_iface_combinations(struct wiphy *wiphy,
1298                                           struct sk_buff *msg,
1299                                           bool large)
1300 {
1301         struct nlattr *nl_combis;
1302         int i, j;
1303
1304         nl_combis = nla_nest_start_noflag(msg,
1305                                           NL80211_ATTR_INTERFACE_COMBINATIONS);
1306         if (!nl_combis)
1307                 goto nla_put_failure;
1308
1309         for (i = 0; i < wiphy->n_iface_combinations; i++) {
1310                 const struct ieee80211_iface_combination *c;
1311                 struct nlattr *nl_combi, *nl_limits;
1312
1313                 c = &wiphy->iface_combinations[i];
1314
1315                 nl_combi = nla_nest_start_noflag(msg, i + 1);
1316                 if (!nl_combi)
1317                         goto nla_put_failure;
1318
1319                 nl_limits = nla_nest_start_noflag(msg,
1320                                                   NL80211_IFACE_COMB_LIMITS);
1321                 if (!nl_limits)
1322                         goto nla_put_failure;
1323
1324                 for (j = 0; j < c->n_limits; j++) {
1325                         struct nlattr *nl_limit;
1326
1327                         nl_limit = nla_nest_start_noflag(msg, j + 1);
1328                         if (!nl_limit)
1329                                 goto nla_put_failure;
1330                         if (nla_put_u32(msg, NL80211_IFACE_LIMIT_MAX,
1331                                         c->limits[j].max))
1332                                 goto nla_put_failure;
1333                         if (nl80211_put_iftypes(msg, NL80211_IFACE_LIMIT_TYPES,
1334                                                 c->limits[j].types))
1335                                 goto nla_put_failure;
1336                         nla_nest_end(msg, nl_limit);
1337                 }
1338
1339                 nla_nest_end(msg, nl_limits);
1340
1341                 if (c->beacon_int_infra_match &&
1342                     nla_put_flag(msg, NL80211_IFACE_COMB_STA_AP_BI_MATCH))
1343                         goto nla_put_failure;
1344                 if (nla_put_u32(msg, NL80211_IFACE_COMB_NUM_CHANNELS,
1345                                 c->num_different_channels) ||
1346                     nla_put_u32(msg, NL80211_IFACE_COMB_MAXNUM,
1347                                 c->max_interfaces))
1348                         goto nla_put_failure;
1349                 if (large &&
1350                     (nla_put_u32(msg, NL80211_IFACE_COMB_RADAR_DETECT_WIDTHS,
1351                                 c->radar_detect_widths) ||
1352                      nla_put_u32(msg, NL80211_IFACE_COMB_RADAR_DETECT_REGIONS,
1353                                 c->radar_detect_regions)))
1354                         goto nla_put_failure;
1355                 if (c->beacon_int_min_gcd &&
1356                     nla_put_u32(msg, NL80211_IFACE_COMB_BI_MIN_GCD,
1357                                 c->beacon_int_min_gcd))
1358                         goto nla_put_failure;
1359
1360                 nla_nest_end(msg, nl_combi);
1361         }
1362
1363         nla_nest_end(msg, nl_combis);
1364
1365         return 0;
1366 nla_put_failure:
1367         return -ENOBUFS;
1368 }
1369
1370 #ifdef CONFIG_PM
1371 static int nl80211_send_wowlan_tcp_caps(struct cfg80211_registered_device *rdev,
1372                                         struct sk_buff *msg)
1373 {
1374         const struct wiphy_wowlan_tcp_support *tcp = rdev->wiphy.wowlan->tcp;
1375         struct nlattr *nl_tcp;
1376
1377         if (!tcp)
1378                 return 0;
1379
1380         nl_tcp = nla_nest_start_noflag(msg,
1381                                        NL80211_WOWLAN_TRIG_TCP_CONNECTION);
1382         if (!nl_tcp)
1383                 return -ENOBUFS;
1384
1385         if (nla_put_u32(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD,
1386                         tcp->data_payload_max))
1387                 return -ENOBUFS;
1388
1389         if (nla_put_u32(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD,
1390                         tcp->data_payload_max))
1391                 return -ENOBUFS;
1392
1393         if (tcp->seq && nla_put_flag(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ))
1394                 return -ENOBUFS;
1395
1396         if (tcp->tok && nla_put(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN,
1397                                 sizeof(*tcp->tok), tcp->tok))
1398                 return -ENOBUFS;
1399
1400         if (nla_put_u32(msg, NL80211_WOWLAN_TCP_DATA_INTERVAL,
1401                         tcp->data_interval_max))
1402                 return -ENOBUFS;
1403
1404         if (nla_put_u32(msg, NL80211_WOWLAN_TCP_WAKE_PAYLOAD,
1405                         tcp->wake_payload_max))
1406                 return -ENOBUFS;
1407
1408         nla_nest_end(msg, nl_tcp);
1409         return 0;
1410 }
1411
1412 static int nl80211_send_wowlan(struct sk_buff *msg,
1413                                struct cfg80211_registered_device *rdev,
1414                                bool large)
1415 {
1416         struct nlattr *nl_wowlan;
1417
1418         if (!rdev->wiphy.wowlan)
1419                 return 0;
1420
1421         nl_wowlan = nla_nest_start_noflag(msg,
1422                                           NL80211_ATTR_WOWLAN_TRIGGERS_SUPPORTED);
1423         if (!nl_wowlan)
1424                 return -ENOBUFS;
1425
1426         if (((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_ANY) &&
1427              nla_put_flag(msg, NL80211_WOWLAN_TRIG_ANY)) ||
1428             ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_DISCONNECT) &&
1429              nla_put_flag(msg, NL80211_WOWLAN_TRIG_DISCONNECT)) ||
1430             ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_MAGIC_PKT) &&
1431              nla_put_flag(msg, NL80211_WOWLAN_TRIG_MAGIC_PKT)) ||
1432             ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_SUPPORTS_GTK_REKEY) &&
1433              nla_put_flag(msg, NL80211_WOWLAN_TRIG_GTK_REKEY_SUPPORTED)) ||
1434             ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_GTK_REKEY_FAILURE) &&
1435              nla_put_flag(msg, NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE)) ||
1436             ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_EAP_IDENTITY_REQ) &&
1437              nla_put_flag(msg, NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST)) ||
1438             ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_4WAY_HANDSHAKE) &&
1439              nla_put_flag(msg, NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE)) ||
1440             ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_RFKILL_RELEASE) &&
1441              nla_put_flag(msg, NL80211_WOWLAN_TRIG_RFKILL_RELEASE)))
1442                 return -ENOBUFS;
1443
1444         if (rdev->wiphy.wowlan->n_patterns) {
1445                 struct nl80211_pattern_support pat = {
1446                         .max_patterns = rdev->wiphy.wowlan->n_patterns,
1447                         .min_pattern_len = rdev->wiphy.wowlan->pattern_min_len,
1448                         .max_pattern_len = rdev->wiphy.wowlan->pattern_max_len,
1449                         .max_pkt_offset = rdev->wiphy.wowlan->max_pkt_offset,
1450                 };
1451
1452                 if (nla_put(msg, NL80211_WOWLAN_TRIG_PKT_PATTERN,
1453                             sizeof(pat), &pat))
1454                         return -ENOBUFS;
1455         }
1456
1457         if ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_NET_DETECT) &&
1458             nla_put_u32(msg, NL80211_WOWLAN_TRIG_NET_DETECT,
1459                         rdev->wiphy.wowlan->max_nd_match_sets))
1460                 return -ENOBUFS;
1461
1462         if (large && nl80211_send_wowlan_tcp_caps(rdev, msg))
1463                 return -ENOBUFS;
1464
1465         nla_nest_end(msg, nl_wowlan);
1466
1467         return 0;
1468 }
1469 #endif
1470
1471 static int nl80211_send_coalesce(struct sk_buff *msg,
1472                                  struct cfg80211_registered_device *rdev)
1473 {
1474         struct nl80211_coalesce_rule_support rule;
1475
1476         if (!rdev->wiphy.coalesce)
1477                 return 0;
1478
1479         rule.max_rules = rdev->wiphy.coalesce->n_rules;
1480         rule.max_delay = rdev->wiphy.coalesce->max_delay;
1481         rule.pat.max_patterns = rdev->wiphy.coalesce->n_patterns;
1482         rule.pat.min_pattern_len = rdev->wiphy.coalesce->pattern_min_len;
1483         rule.pat.max_pattern_len = rdev->wiphy.coalesce->pattern_max_len;
1484         rule.pat.max_pkt_offset = rdev->wiphy.coalesce->max_pkt_offset;
1485
1486         if (nla_put(msg, NL80211_ATTR_COALESCE_RULE, sizeof(rule), &rule))
1487                 return -ENOBUFS;
1488
1489         return 0;
1490 }
1491
1492 static int
1493 nl80211_send_iftype_data(struct sk_buff *msg,
1494                          const struct ieee80211_sband_iftype_data *iftdata)
1495 {
1496         const struct ieee80211_sta_he_cap *he_cap = &iftdata->he_cap;
1497
1498         if (nl80211_put_iftypes(msg, NL80211_BAND_IFTYPE_ATTR_IFTYPES,
1499                                 iftdata->types_mask))
1500                 return -ENOBUFS;
1501
1502         if (he_cap->has_he) {
1503                 if (nla_put(msg, NL80211_BAND_IFTYPE_ATTR_HE_CAP_MAC,
1504                             sizeof(he_cap->he_cap_elem.mac_cap_info),
1505                             he_cap->he_cap_elem.mac_cap_info) ||
1506                     nla_put(msg, NL80211_BAND_IFTYPE_ATTR_HE_CAP_PHY,
1507                             sizeof(he_cap->he_cap_elem.phy_cap_info),
1508                             he_cap->he_cap_elem.phy_cap_info) ||
1509                     nla_put(msg, NL80211_BAND_IFTYPE_ATTR_HE_CAP_MCS_SET,
1510                             sizeof(he_cap->he_mcs_nss_supp),
1511                             &he_cap->he_mcs_nss_supp) ||
1512                     nla_put(msg, NL80211_BAND_IFTYPE_ATTR_HE_CAP_PPE,
1513                             sizeof(he_cap->ppe_thres), he_cap->ppe_thres))
1514                         return -ENOBUFS;
1515         }
1516
1517         return 0;
1518 }
1519
1520 static int nl80211_send_band_rateinfo(struct sk_buff *msg,
1521                                       struct ieee80211_supported_band *sband)
1522 {
1523         struct nlattr *nl_rates, *nl_rate;
1524         struct ieee80211_rate *rate;
1525         int i;
1526
1527         /* add HT info */
1528         if (sband->ht_cap.ht_supported &&
1529             (nla_put(msg, NL80211_BAND_ATTR_HT_MCS_SET,
1530                      sizeof(sband->ht_cap.mcs),
1531                      &sband->ht_cap.mcs) ||
1532              nla_put_u16(msg, NL80211_BAND_ATTR_HT_CAPA,
1533                          sband->ht_cap.cap) ||
1534              nla_put_u8(msg, NL80211_BAND_ATTR_HT_AMPDU_FACTOR,
1535                         sband->ht_cap.ampdu_factor) ||
1536              nla_put_u8(msg, NL80211_BAND_ATTR_HT_AMPDU_DENSITY,
1537                         sband->ht_cap.ampdu_density)))
1538                 return -ENOBUFS;
1539
1540         /* add VHT info */
1541         if (sband->vht_cap.vht_supported &&
1542             (nla_put(msg, NL80211_BAND_ATTR_VHT_MCS_SET,
1543                      sizeof(sband->vht_cap.vht_mcs),
1544                      &sband->vht_cap.vht_mcs) ||
1545              nla_put_u32(msg, NL80211_BAND_ATTR_VHT_CAPA,
1546                          sband->vht_cap.cap)))
1547                 return -ENOBUFS;
1548
1549         if (sband->n_iftype_data) {
1550                 struct nlattr *nl_iftype_data =
1551                         nla_nest_start_noflag(msg,
1552                                               NL80211_BAND_ATTR_IFTYPE_DATA);
1553                 int err;
1554
1555                 if (!nl_iftype_data)
1556                         return -ENOBUFS;
1557
1558                 for (i = 0; i < sband->n_iftype_data; i++) {
1559                         struct nlattr *iftdata;
1560
1561                         iftdata = nla_nest_start_noflag(msg, i + 1);
1562                         if (!iftdata)
1563                                 return -ENOBUFS;
1564
1565                         err = nl80211_send_iftype_data(msg,
1566                                                        &sband->iftype_data[i]);
1567                         if (err)
1568                                 return err;
1569
1570                         nla_nest_end(msg, iftdata);
1571                 }
1572
1573                 nla_nest_end(msg, nl_iftype_data);
1574         }
1575
1576         /* add bitrates */
1577         nl_rates = nla_nest_start_noflag(msg, NL80211_BAND_ATTR_RATES);
1578         if (!nl_rates)
1579                 return -ENOBUFS;
1580
1581         for (i = 0; i < sband->n_bitrates; i++) {
1582                 nl_rate = nla_nest_start_noflag(msg, i);
1583                 if (!nl_rate)
1584                         return -ENOBUFS;
1585
1586                 rate = &sband->bitrates[i];
1587                 if (nla_put_u32(msg, NL80211_BITRATE_ATTR_RATE,
1588                                 rate->bitrate))
1589                         return -ENOBUFS;
1590                 if ((rate->flags & IEEE80211_RATE_SHORT_PREAMBLE) &&
1591                     nla_put_flag(msg,
1592                                  NL80211_BITRATE_ATTR_2GHZ_SHORTPREAMBLE))
1593                         return -ENOBUFS;
1594
1595                 nla_nest_end(msg, nl_rate);
1596         }
1597
1598         nla_nest_end(msg, nl_rates);
1599
1600         return 0;
1601 }
1602
1603 static int
1604 nl80211_send_mgmt_stypes(struct sk_buff *msg,
1605                          const struct ieee80211_txrx_stypes *mgmt_stypes)
1606 {
1607         u16 stypes;
1608         struct nlattr *nl_ftypes, *nl_ifs;
1609         enum nl80211_iftype ift;
1610         int i;
1611
1612         if (!mgmt_stypes)
1613                 return 0;
1614
1615         nl_ifs = nla_nest_start_noflag(msg, NL80211_ATTR_TX_FRAME_TYPES);
1616         if (!nl_ifs)
1617                 return -ENOBUFS;
1618
1619         for (ift = 0; ift < NUM_NL80211_IFTYPES; ift++) {
1620                 nl_ftypes = nla_nest_start_noflag(msg, ift);
1621                 if (!nl_ftypes)
1622                         return -ENOBUFS;
1623                 i = 0;
1624                 stypes = mgmt_stypes[ift].tx;
1625                 while (stypes) {
1626                         if ((stypes & 1) &&
1627                             nla_put_u16(msg, NL80211_ATTR_FRAME_TYPE,
1628                                         (i << 4) | IEEE80211_FTYPE_MGMT))
1629                                 return -ENOBUFS;
1630                         stypes >>= 1;
1631                         i++;
1632                 }
1633                 nla_nest_end(msg, nl_ftypes);
1634         }
1635
1636         nla_nest_end(msg, nl_ifs);
1637
1638         nl_ifs = nla_nest_start_noflag(msg, NL80211_ATTR_RX_FRAME_TYPES);
1639         if (!nl_ifs)
1640                 return -ENOBUFS;
1641
1642         for (ift = 0; ift < NUM_NL80211_IFTYPES; ift++) {
1643                 nl_ftypes = nla_nest_start_noflag(msg, ift);
1644                 if (!nl_ftypes)
1645                         return -ENOBUFS;
1646                 i = 0;
1647                 stypes = mgmt_stypes[ift].rx;
1648                 while (stypes) {
1649                         if ((stypes & 1) &&
1650                             nla_put_u16(msg, NL80211_ATTR_FRAME_TYPE,
1651                                         (i << 4) | IEEE80211_FTYPE_MGMT))
1652                                 return -ENOBUFS;
1653                         stypes >>= 1;
1654                         i++;
1655                 }
1656                 nla_nest_end(msg, nl_ftypes);
1657         }
1658         nla_nest_end(msg, nl_ifs);
1659
1660         return 0;
1661 }
1662
1663 #define CMD(op, n)                                                      \
1664          do {                                                           \
1665                 if (rdev->ops->op) {                                    \
1666                         i++;                                            \
1667                         if (nla_put_u32(msg, i, NL80211_CMD_ ## n))     \
1668                                 goto nla_put_failure;                   \
1669                 }                                                       \
1670         } while (0)
1671
1672 static int nl80211_add_commands_unsplit(struct cfg80211_registered_device *rdev,
1673                                         struct sk_buff *msg)
1674 {
1675         int i = 0;
1676
1677         /*
1678          * do *NOT* add anything into this function, new things need to be
1679          * advertised only to new versions of userspace that can deal with
1680          * the split (and they can't possibly care about new features...
1681          */
1682         CMD(add_virtual_intf, NEW_INTERFACE);
1683         CMD(change_virtual_intf, SET_INTERFACE);
1684         CMD(add_key, NEW_KEY);
1685         CMD(start_ap, START_AP);
1686         CMD(add_station, NEW_STATION);
1687         CMD(add_mpath, NEW_MPATH);
1688         CMD(update_mesh_config, SET_MESH_CONFIG);
1689         CMD(change_bss, SET_BSS);
1690         CMD(auth, AUTHENTICATE);
1691         CMD(assoc, ASSOCIATE);
1692         CMD(deauth, DEAUTHENTICATE);
1693         CMD(disassoc, DISASSOCIATE);
1694         CMD(join_ibss, JOIN_IBSS);
1695         CMD(join_mesh, JOIN_MESH);
1696         CMD(set_pmksa, SET_PMKSA);
1697         CMD(del_pmksa, DEL_PMKSA);
1698         CMD(flush_pmksa, FLUSH_PMKSA);
1699         if (rdev->wiphy.flags & WIPHY_FLAG_HAS_REMAIN_ON_CHANNEL)
1700                 CMD(remain_on_channel, REMAIN_ON_CHANNEL);
1701         CMD(set_bitrate_mask, SET_TX_BITRATE_MASK);
1702         CMD(mgmt_tx, FRAME);
1703         CMD(mgmt_tx_cancel_wait, FRAME_WAIT_CANCEL);
1704         if (rdev->wiphy.flags & WIPHY_FLAG_NETNS_OK) {
1705                 i++;
1706                 if (nla_put_u32(msg, i, NL80211_CMD_SET_WIPHY_NETNS))
1707                         goto nla_put_failure;
1708         }
1709         if (rdev->ops->set_monitor_channel || rdev->ops->start_ap ||
1710             rdev->ops->join_mesh) {
1711                 i++;
1712                 if (nla_put_u32(msg, i, NL80211_CMD_SET_CHANNEL))
1713                         goto nla_put_failure;
1714         }
1715         CMD(set_wds_peer, SET_WDS_PEER);
1716         if (rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS) {
1717                 CMD(tdls_mgmt, TDLS_MGMT);
1718                 CMD(tdls_oper, TDLS_OPER);
1719         }
1720         if (rdev->wiphy.max_sched_scan_reqs)
1721                 CMD(sched_scan_start, START_SCHED_SCAN);
1722         CMD(probe_client, PROBE_CLIENT);
1723         CMD(set_noack_map, SET_NOACK_MAP);
1724         if (rdev->wiphy.flags & WIPHY_FLAG_REPORTS_OBSS) {
1725                 i++;
1726                 if (nla_put_u32(msg, i, NL80211_CMD_REGISTER_BEACONS))
1727                         goto nla_put_failure;
1728         }
1729         CMD(start_p2p_device, START_P2P_DEVICE);
1730         CMD(set_mcast_rate, SET_MCAST_RATE);
1731 #ifdef CONFIG_NL80211_TESTMODE
1732         CMD(testmode_cmd, TESTMODE);
1733 #endif
1734
1735         if (rdev->ops->connect || rdev->ops->auth) {
1736                 i++;
1737                 if (nla_put_u32(msg, i, NL80211_CMD_CONNECT))
1738                         goto nla_put_failure;
1739         }
1740
1741         if (rdev->ops->disconnect || rdev->ops->deauth) {
1742                 i++;
1743                 if (nla_put_u32(msg, i, NL80211_CMD_DISCONNECT))
1744                         goto nla_put_failure;
1745         }
1746
1747         return i;
1748  nla_put_failure:
1749         return -ENOBUFS;
1750 }
1751
1752 static int
1753 nl80211_send_pmsr_ftm_capa(const struct cfg80211_pmsr_capabilities *cap,
1754                            struct sk_buff *msg)
1755 {
1756         struct nlattr *ftm;
1757
1758         if (!cap->ftm.supported)
1759                 return 0;
1760
1761         ftm = nla_nest_start_noflag(msg, NL80211_PMSR_TYPE_FTM);
1762         if (!ftm)
1763                 return -ENOBUFS;
1764
1765         if (cap->ftm.asap && nla_put_flag(msg, NL80211_PMSR_FTM_CAPA_ATTR_ASAP))
1766                 return -ENOBUFS;
1767         if (cap->ftm.non_asap &&
1768             nla_put_flag(msg, NL80211_PMSR_FTM_CAPA_ATTR_NON_ASAP))
1769                 return -ENOBUFS;
1770         if (cap->ftm.request_lci &&
1771             nla_put_flag(msg, NL80211_PMSR_FTM_CAPA_ATTR_REQ_LCI))
1772                 return -ENOBUFS;
1773         if (cap->ftm.request_civicloc &&
1774             nla_put_flag(msg, NL80211_PMSR_FTM_CAPA_ATTR_REQ_CIVICLOC))
1775                 return -ENOBUFS;
1776         if (nla_put_u32(msg, NL80211_PMSR_FTM_CAPA_ATTR_PREAMBLES,
1777                         cap->ftm.preambles))
1778                 return -ENOBUFS;
1779         if (nla_put_u32(msg, NL80211_PMSR_FTM_CAPA_ATTR_BANDWIDTHS,
1780                         cap->ftm.bandwidths))
1781                 return -ENOBUFS;
1782         if (cap->ftm.max_bursts_exponent >= 0 &&
1783             nla_put_u32(msg, NL80211_PMSR_FTM_CAPA_ATTR_MAX_BURSTS_EXPONENT,
1784                         cap->ftm.max_bursts_exponent))
1785                 return -ENOBUFS;
1786         if (cap->ftm.max_ftms_per_burst &&
1787             nla_put_u32(msg, NL80211_PMSR_FTM_CAPA_ATTR_MAX_FTMS_PER_BURST,
1788                         cap->ftm.max_ftms_per_burst))
1789                 return -ENOBUFS;
1790
1791         nla_nest_end(msg, ftm);
1792         return 0;
1793 }
1794
1795 static int nl80211_send_pmsr_capa(struct cfg80211_registered_device *rdev,
1796                                   struct sk_buff *msg)
1797 {
1798         const struct cfg80211_pmsr_capabilities *cap = rdev->wiphy.pmsr_capa;
1799         struct nlattr *pmsr, *caps;
1800
1801         if (!cap)
1802                 return 0;
1803
1804         /*
1805          * we don't need to clean up anything here since the caller
1806          * will genlmsg_cancel() if we fail
1807          */
1808
1809         pmsr = nla_nest_start_noflag(msg, NL80211_ATTR_PEER_MEASUREMENTS);
1810         if (!pmsr)
1811                 return -ENOBUFS;
1812
1813         if (nla_put_u32(msg, NL80211_PMSR_ATTR_MAX_PEERS, cap->max_peers))
1814                 return -ENOBUFS;
1815
1816         if (cap->report_ap_tsf &&
1817             nla_put_flag(msg, NL80211_PMSR_ATTR_REPORT_AP_TSF))
1818                 return -ENOBUFS;
1819
1820         if (cap->randomize_mac_addr &&
1821             nla_put_flag(msg, NL80211_PMSR_ATTR_RANDOMIZE_MAC_ADDR))
1822                 return -ENOBUFS;
1823
1824         caps = nla_nest_start_noflag(msg, NL80211_PMSR_ATTR_TYPE_CAPA);
1825         if (!caps)
1826                 return -ENOBUFS;
1827
1828         if (nl80211_send_pmsr_ftm_capa(cap, msg))
1829                 return -ENOBUFS;
1830
1831         nla_nest_end(msg, caps);
1832         nla_nest_end(msg, pmsr);
1833
1834         return 0;
1835 }
1836
1837 struct nl80211_dump_wiphy_state {
1838         s64 filter_wiphy;
1839         long start;
1840         long split_start, band_start, chan_start, capa_start;
1841         bool split;
1842 };
1843
1844 static int nl80211_send_wiphy(struct cfg80211_registered_device *rdev,
1845                               enum nl80211_commands cmd,
1846                               struct sk_buff *msg, u32 portid, u32 seq,
1847                               int flags, struct nl80211_dump_wiphy_state *state)
1848 {
1849         void *hdr;
1850         struct nlattr *nl_bands, *nl_band;
1851         struct nlattr *nl_freqs, *nl_freq;
1852         struct nlattr *nl_cmds;
1853         enum nl80211_band band;
1854         struct ieee80211_channel *chan;
1855         int i;
1856         const struct ieee80211_txrx_stypes *mgmt_stypes =
1857                                 rdev->wiphy.mgmt_stypes;
1858         u32 features;
1859
1860         hdr = nl80211hdr_put(msg, portid, seq, flags, cmd);
1861         if (!hdr)
1862                 return -ENOBUFS;
1863
1864         if (WARN_ON(!state))
1865                 return -EINVAL;
1866
1867         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
1868             nla_put_string(msg, NL80211_ATTR_WIPHY_NAME,
1869                            wiphy_name(&rdev->wiphy)) ||
1870             nla_put_u32(msg, NL80211_ATTR_GENERATION,
1871                         cfg80211_rdev_list_generation))
1872                 goto nla_put_failure;
1873
1874         if (cmd != NL80211_CMD_NEW_WIPHY)
1875                 goto finish;
1876
1877         switch (state->split_start) {
1878         case 0:
1879                 if (nla_put_u8(msg, NL80211_ATTR_WIPHY_RETRY_SHORT,
1880                                rdev->wiphy.retry_short) ||
1881                     nla_put_u8(msg, NL80211_ATTR_WIPHY_RETRY_LONG,
1882                                rdev->wiphy.retry_long) ||
1883                     nla_put_u32(msg, NL80211_ATTR_WIPHY_FRAG_THRESHOLD,
1884                                 rdev->wiphy.frag_threshold) ||
1885                     nla_put_u32(msg, NL80211_ATTR_WIPHY_RTS_THRESHOLD,
1886                                 rdev->wiphy.rts_threshold) ||
1887                     nla_put_u8(msg, NL80211_ATTR_WIPHY_COVERAGE_CLASS,
1888                                rdev->wiphy.coverage_class) ||
1889                     nla_put_u8(msg, NL80211_ATTR_MAX_NUM_SCAN_SSIDS,
1890                                rdev->wiphy.max_scan_ssids) ||
1891                     nla_put_u8(msg, NL80211_ATTR_MAX_NUM_SCHED_SCAN_SSIDS,
1892                                rdev->wiphy.max_sched_scan_ssids) ||
1893                     nla_put_u16(msg, NL80211_ATTR_MAX_SCAN_IE_LEN,
1894                                 rdev->wiphy.max_scan_ie_len) ||
1895                     nla_put_u16(msg, NL80211_ATTR_MAX_SCHED_SCAN_IE_LEN,
1896                                 rdev->wiphy.max_sched_scan_ie_len) ||
1897                     nla_put_u8(msg, NL80211_ATTR_MAX_MATCH_SETS,
1898                                rdev->wiphy.max_match_sets) ||
1899                     nla_put_u32(msg, NL80211_ATTR_MAX_NUM_SCHED_SCAN_PLANS,
1900                                 rdev->wiphy.max_sched_scan_plans) ||
1901                     nla_put_u32(msg, NL80211_ATTR_MAX_SCAN_PLAN_INTERVAL,
1902                                 rdev->wiphy.max_sched_scan_plan_interval) ||
1903                     nla_put_u32(msg, NL80211_ATTR_MAX_SCAN_PLAN_ITERATIONS,
1904                                 rdev->wiphy.max_sched_scan_plan_iterations))
1905                         goto nla_put_failure;
1906
1907                 if ((rdev->wiphy.flags & WIPHY_FLAG_IBSS_RSN) &&
1908                     nla_put_flag(msg, NL80211_ATTR_SUPPORT_IBSS_RSN))
1909                         goto nla_put_failure;
1910                 if ((rdev->wiphy.flags & WIPHY_FLAG_MESH_AUTH) &&
1911                     nla_put_flag(msg, NL80211_ATTR_SUPPORT_MESH_AUTH))
1912                         goto nla_put_failure;
1913                 if ((rdev->wiphy.flags & WIPHY_FLAG_AP_UAPSD) &&
1914                     nla_put_flag(msg, NL80211_ATTR_SUPPORT_AP_UAPSD))
1915                         goto nla_put_failure;
1916                 if ((rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_FW_ROAM) &&
1917                     nla_put_flag(msg, NL80211_ATTR_ROAM_SUPPORT))
1918                         goto nla_put_failure;
1919                 if ((rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS) &&
1920                     nla_put_flag(msg, NL80211_ATTR_TDLS_SUPPORT))
1921                         goto nla_put_failure;
1922                 if ((rdev->wiphy.flags & WIPHY_FLAG_TDLS_EXTERNAL_SETUP) &&
1923                     nla_put_flag(msg, NL80211_ATTR_TDLS_EXTERNAL_SETUP))
1924                         goto nla_put_failure;
1925                 state->split_start++;
1926                 if (state->split)
1927                         break;
1928                 /* fall through */
1929         case 1:
1930                 if (nla_put(msg, NL80211_ATTR_CIPHER_SUITES,
1931                             sizeof(u32) * rdev->wiphy.n_cipher_suites,
1932                             rdev->wiphy.cipher_suites))
1933                         goto nla_put_failure;
1934
1935                 if (nla_put_u8(msg, NL80211_ATTR_MAX_NUM_PMKIDS,
1936                                rdev->wiphy.max_num_pmkids))
1937                         goto nla_put_failure;
1938
1939                 if ((rdev->wiphy.flags & WIPHY_FLAG_CONTROL_PORT_PROTOCOL) &&
1940                     nla_put_flag(msg, NL80211_ATTR_CONTROL_PORT_ETHERTYPE))
1941                         goto nla_put_failure;
1942
1943                 if (nla_put_u32(msg, NL80211_ATTR_WIPHY_ANTENNA_AVAIL_TX,
1944                                 rdev->wiphy.available_antennas_tx) ||
1945                     nla_put_u32(msg, NL80211_ATTR_WIPHY_ANTENNA_AVAIL_RX,
1946                                 rdev->wiphy.available_antennas_rx))
1947                         goto nla_put_failure;
1948
1949                 if ((rdev->wiphy.flags & WIPHY_FLAG_AP_PROBE_RESP_OFFLOAD) &&
1950                     nla_put_u32(msg, NL80211_ATTR_PROBE_RESP_OFFLOAD,
1951                                 rdev->wiphy.probe_resp_offload))
1952                         goto nla_put_failure;
1953
1954                 if ((rdev->wiphy.available_antennas_tx ||
1955                      rdev->wiphy.available_antennas_rx) &&
1956                     rdev->ops->get_antenna) {
1957                         u32 tx_ant = 0, rx_ant = 0;
1958                         int res;
1959
1960                         res = rdev_get_antenna(rdev, &tx_ant, &rx_ant);
1961                         if (!res) {
1962                                 if (nla_put_u32(msg,
1963                                                 NL80211_ATTR_WIPHY_ANTENNA_TX,
1964                                                 tx_ant) ||
1965                                     nla_put_u32(msg,
1966                                                 NL80211_ATTR_WIPHY_ANTENNA_RX,
1967                                                 rx_ant))
1968                                         goto nla_put_failure;
1969                         }
1970                 }
1971
1972                 state->split_start++;
1973                 if (state->split)
1974                         break;
1975                 /* fall through */
1976         case 2:
1977                 if (nl80211_put_iftypes(msg, NL80211_ATTR_SUPPORTED_IFTYPES,
1978                                         rdev->wiphy.interface_modes))
1979                                 goto nla_put_failure;
1980                 state->split_start++;
1981                 if (state->split)
1982                         break;
1983                 /* fall through */
1984         case 3:
1985                 nl_bands = nla_nest_start_noflag(msg,
1986                                                  NL80211_ATTR_WIPHY_BANDS);
1987                 if (!nl_bands)
1988                         goto nla_put_failure;
1989
1990                 for (band = state->band_start;
1991                      band < NUM_NL80211_BANDS; band++) {
1992                         struct ieee80211_supported_band *sband;
1993
1994                         sband = rdev->wiphy.bands[band];
1995
1996                         if (!sband)
1997                                 continue;
1998
1999                         nl_band = nla_nest_start_noflag(msg, band);
2000                         if (!nl_band)
2001                                 goto nla_put_failure;
2002
2003                         switch (state->chan_start) {
2004                         case 0:
2005                                 if (nl80211_send_band_rateinfo(msg, sband))
2006                                         goto nla_put_failure;
2007                                 state->chan_start++;
2008                                 if (state->split)
2009                                         break;
2010                                 /* fall through */
2011                         default:
2012                                 /* add frequencies */
2013                                 nl_freqs = nla_nest_start_noflag(msg,
2014                                                                  NL80211_BAND_ATTR_FREQS);
2015                                 if (!nl_freqs)
2016                                         goto nla_put_failure;
2017
2018                                 for (i = state->chan_start - 1;
2019                                      i < sband->n_channels;
2020                                      i++) {
2021                                         nl_freq = nla_nest_start_noflag(msg,
2022                                                                         i);
2023                                         if (!nl_freq)
2024                                                 goto nla_put_failure;
2025
2026                                         chan = &sband->channels[i];
2027
2028                                         if (nl80211_msg_put_channel(
2029                                                         msg, &rdev->wiphy, chan,
2030                                                         state->split))
2031                                                 goto nla_put_failure;
2032
2033                                         nla_nest_end(msg, nl_freq);
2034                                         if (state->split)
2035                                                 break;
2036                                 }
2037                                 if (i < sband->n_channels)
2038                                         state->chan_start = i + 2;
2039                                 else
2040                                         state->chan_start = 0;
2041                                 nla_nest_end(msg, nl_freqs);
2042                         }
2043
2044                         nla_nest_end(msg, nl_band);
2045
2046                         if (state->split) {
2047                                 /* start again here */
2048                                 if (state->chan_start)
2049                                         band--;
2050                                 break;
2051                         }
2052                 }
2053                 nla_nest_end(msg, nl_bands);
2054
2055                 if (band < NUM_NL80211_BANDS)
2056                         state->band_start = band + 1;
2057                 else
2058                         state->band_start = 0;
2059
2060                 /* if bands & channels are done, continue outside */
2061                 if (state->band_start == 0 && state->chan_start == 0)
2062                         state->split_start++;
2063                 if (state->split)
2064                         break;
2065                 /* fall through */
2066         case 4:
2067                 nl_cmds = nla_nest_start_noflag(msg,
2068                                                 NL80211_ATTR_SUPPORTED_COMMANDS);
2069                 if (!nl_cmds)
2070                         goto nla_put_failure;
2071
2072                 i = nl80211_add_commands_unsplit(rdev, msg);
2073                 if (i < 0)
2074                         goto nla_put_failure;
2075                 if (state->split) {
2076                         CMD(crit_proto_start, CRIT_PROTOCOL_START);
2077                         CMD(crit_proto_stop, CRIT_PROTOCOL_STOP);
2078                         if (rdev->wiphy.flags & WIPHY_FLAG_HAS_CHANNEL_SWITCH)
2079                                 CMD(channel_switch, CHANNEL_SWITCH);
2080                         CMD(set_qos_map, SET_QOS_MAP);
2081                         if (rdev->wiphy.features &
2082                                         NL80211_FEATURE_SUPPORTS_WMM_ADMISSION)
2083                                 CMD(add_tx_ts, ADD_TX_TS);
2084                         CMD(set_multicast_to_unicast, SET_MULTICAST_TO_UNICAST);
2085                         CMD(update_connect_params, UPDATE_CONNECT_PARAMS);
2086                 }
2087 #undef CMD
2088
2089                 nla_nest_end(msg, nl_cmds);
2090                 state->split_start++;
2091                 if (state->split)
2092                         break;
2093                 /* fall through */
2094         case 5:
2095                 if (rdev->ops->remain_on_channel &&
2096                     (rdev->wiphy.flags & WIPHY_FLAG_HAS_REMAIN_ON_CHANNEL) &&
2097                     nla_put_u32(msg,
2098                                 NL80211_ATTR_MAX_REMAIN_ON_CHANNEL_DURATION,
2099                                 rdev->wiphy.max_remain_on_channel_duration))
2100                         goto nla_put_failure;
2101
2102                 if ((rdev->wiphy.flags & WIPHY_FLAG_OFFCHAN_TX) &&
2103                     nla_put_flag(msg, NL80211_ATTR_OFFCHANNEL_TX_OK))
2104                         goto nla_put_failure;
2105
2106                 if (nl80211_send_mgmt_stypes(msg, mgmt_stypes))
2107                         goto nla_put_failure;
2108                 state->split_start++;
2109                 if (state->split)
2110                         break;
2111                 /* fall through */
2112         case 6:
2113 #ifdef CONFIG_PM
2114                 if (nl80211_send_wowlan(msg, rdev, state->split))
2115                         goto nla_put_failure;
2116                 state->split_start++;
2117                 if (state->split)
2118                         break;
2119 #else
2120                 state->split_start++;
2121 #endif
2122                 /* fall through */
2123         case 7:
2124                 if (nl80211_put_iftypes(msg, NL80211_ATTR_SOFTWARE_IFTYPES,
2125                                         rdev->wiphy.software_iftypes))
2126                         goto nla_put_failure;
2127
2128                 if (nl80211_put_iface_combinations(&rdev->wiphy, msg,
2129                                                    state->split))
2130                         goto nla_put_failure;
2131
2132                 state->split_start++;
2133                 if (state->split)
2134                         break;
2135                 /* fall through */
2136         case 8:
2137                 if ((rdev->wiphy.flags & WIPHY_FLAG_HAVE_AP_SME) &&
2138                     nla_put_u32(msg, NL80211_ATTR_DEVICE_AP_SME,
2139                                 rdev->wiphy.ap_sme_capa))
2140                         goto nla_put_failure;
2141
2142                 features = rdev->wiphy.features;
2143                 /*
2144                  * We can only add the per-channel limit information if the
2145                  * dump is split, otherwise it makes it too big. Therefore
2146                  * only advertise it in that case.
2147                  */
2148                 if (state->split)
2149                         features |= NL80211_FEATURE_ADVERTISE_CHAN_LIMITS;
2150                 if (nla_put_u32(msg, NL80211_ATTR_FEATURE_FLAGS, features))
2151                         goto nla_put_failure;
2152
2153                 if (rdev->wiphy.ht_capa_mod_mask &&
2154                     nla_put(msg, NL80211_ATTR_HT_CAPABILITY_MASK,
2155                             sizeof(*rdev->wiphy.ht_capa_mod_mask),
2156                             rdev->wiphy.ht_capa_mod_mask))
2157                         goto nla_put_failure;
2158
2159                 if (rdev->wiphy.flags & WIPHY_FLAG_HAVE_AP_SME &&
2160                     rdev->wiphy.max_acl_mac_addrs &&
2161                     nla_put_u32(msg, NL80211_ATTR_MAC_ACL_MAX,
2162                                 rdev->wiphy.max_acl_mac_addrs))
2163                         goto nla_put_failure;
2164
2165                 /*
2166                  * Any information below this point is only available to
2167                  * applications that can deal with it being split. This
2168                  * helps ensure that newly added capabilities don't break
2169                  * older tools by overrunning their buffers.
2170                  *
2171                  * We still increment split_start so that in the split
2172                  * case we'll continue with more data in the next round,
2173                  * but break unconditionally so unsplit data stops here.
2174                  */
2175                 state->split_start++;
2176                 break;
2177         case 9:
2178                 if (rdev->wiphy.extended_capabilities &&
2179                     (nla_put(msg, NL80211_ATTR_EXT_CAPA,
2180                              rdev->wiphy.extended_capabilities_len,
2181                              rdev->wiphy.extended_capabilities) ||
2182                      nla_put(msg, NL80211_ATTR_EXT_CAPA_MASK,
2183                              rdev->wiphy.extended_capabilities_len,
2184                              rdev->wiphy.extended_capabilities_mask)))
2185                         goto nla_put_failure;
2186
2187                 if (rdev->wiphy.vht_capa_mod_mask &&
2188                     nla_put(msg, NL80211_ATTR_VHT_CAPABILITY_MASK,
2189                             sizeof(*rdev->wiphy.vht_capa_mod_mask),
2190                             rdev->wiphy.vht_capa_mod_mask))
2191                         goto nla_put_failure;
2192
2193                 if (nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN,
2194                             rdev->wiphy.perm_addr))
2195                         goto nla_put_failure;
2196
2197                 if (!is_zero_ether_addr(rdev->wiphy.addr_mask) &&
2198                     nla_put(msg, NL80211_ATTR_MAC_MASK, ETH_ALEN,
2199                             rdev->wiphy.addr_mask))
2200                         goto nla_put_failure;
2201
2202                 if (rdev->wiphy.n_addresses > 1) {
2203                         void *attr;
2204
2205                         attr = nla_nest_start(msg, NL80211_ATTR_MAC_ADDRS);
2206                         if (!attr)
2207                                 goto nla_put_failure;
2208
2209                         for (i = 0; i < rdev->wiphy.n_addresses; i++)
2210                                 if (nla_put(msg, i + 1, ETH_ALEN,
2211                                             rdev->wiphy.addresses[i].addr))
2212                                         goto nla_put_failure;
2213
2214                         nla_nest_end(msg, attr);
2215                 }
2216
2217                 state->split_start++;
2218                 break;
2219         case 10:
2220                 if (nl80211_send_coalesce(msg, rdev))
2221                         goto nla_put_failure;
2222
2223                 if ((rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_5_10_MHZ) &&
2224                     (nla_put_flag(msg, NL80211_ATTR_SUPPORT_5_MHZ) ||
2225                      nla_put_flag(msg, NL80211_ATTR_SUPPORT_10_MHZ)))
2226                         goto nla_put_failure;
2227
2228                 if (rdev->wiphy.max_ap_assoc_sta &&
2229                     nla_put_u32(msg, NL80211_ATTR_MAX_AP_ASSOC_STA,
2230                                 rdev->wiphy.max_ap_assoc_sta))
2231                         goto nla_put_failure;
2232
2233                 state->split_start++;
2234                 break;
2235         case 11:
2236                 if (rdev->wiphy.n_vendor_commands) {
2237                         const struct nl80211_vendor_cmd_info *info;
2238                         struct nlattr *nested;
2239
2240                         nested = nla_nest_start_noflag(msg,
2241                                                        NL80211_ATTR_VENDOR_DATA);
2242                         if (!nested)
2243                                 goto nla_put_failure;
2244
2245                         for (i = 0; i < rdev->wiphy.n_vendor_commands; i++) {
2246                                 info = &rdev->wiphy.vendor_commands[i].info;
2247                                 if (nla_put(msg, i + 1, sizeof(*info), info))
2248                                         goto nla_put_failure;
2249                         }
2250                         nla_nest_end(msg, nested);
2251                 }
2252
2253                 if (rdev->wiphy.n_vendor_events) {
2254                         const struct nl80211_vendor_cmd_info *info;
2255                         struct nlattr *nested;
2256
2257                         nested = nla_nest_start_noflag(msg,
2258                                                        NL80211_ATTR_VENDOR_EVENTS);
2259                         if (!nested)
2260                                 goto nla_put_failure;
2261
2262                         for (i = 0; i < rdev->wiphy.n_vendor_events; i++) {
2263                                 info = &rdev->wiphy.vendor_events[i];
2264                                 if (nla_put(msg, i + 1, sizeof(*info), info))
2265                                         goto nla_put_failure;
2266                         }
2267                         nla_nest_end(msg, nested);
2268                 }
2269                 state->split_start++;
2270                 break;
2271         case 12:
2272                 if (rdev->wiphy.flags & WIPHY_FLAG_HAS_CHANNEL_SWITCH &&
2273                     nla_put_u8(msg, NL80211_ATTR_MAX_CSA_COUNTERS,
2274                                rdev->wiphy.max_num_csa_counters))
2275                         goto nla_put_failure;
2276
2277                 if (rdev->wiphy.regulatory_flags & REGULATORY_WIPHY_SELF_MANAGED &&
2278                     nla_put_flag(msg, NL80211_ATTR_WIPHY_SELF_MANAGED_REG))
2279                         goto nla_put_failure;
2280
2281                 if (rdev->wiphy.max_sched_scan_reqs &&
2282                     nla_put_u32(msg, NL80211_ATTR_SCHED_SCAN_MAX_REQS,
2283                                 rdev->wiphy.max_sched_scan_reqs))
2284                         goto nla_put_failure;
2285
2286                 if (nla_put(msg, NL80211_ATTR_EXT_FEATURES,
2287                             sizeof(rdev->wiphy.ext_features),
2288                             rdev->wiphy.ext_features))
2289                         goto nla_put_failure;
2290
2291                 if (rdev->wiphy.bss_select_support) {
2292                         struct nlattr *nested;
2293                         u32 bss_select_support = rdev->wiphy.bss_select_support;
2294
2295                         nested = nla_nest_start_noflag(msg,
2296                                                        NL80211_ATTR_BSS_SELECT);
2297                         if (!nested)
2298                                 goto nla_put_failure;
2299
2300                         i = 0;
2301                         while (bss_select_support) {
2302                                 if ((bss_select_support & 1) &&
2303                                     nla_put_flag(msg, i))
2304                                         goto nla_put_failure;
2305                                 i++;
2306                                 bss_select_support >>= 1;
2307                         }
2308                         nla_nest_end(msg, nested);
2309                 }
2310
2311                 state->split_start++;
2312                 break;
2313         case 13:
2314                 if (rdev->wiphy.num_iftype_ext_capab &&
2315                     rdev->wiphy.iftype_ext_capab) {
2316                         struct nlattr *nested_ext_capab, *nested;
2317
2318                         nested = nla_nest_start_noflag(msg,
2319                                                        NL80211_ATTR_IFTYPE_EXT_CAPA);
2320                         if (!nested)
2321                                 goto nla_put_failure;
2322
2323                         for (i = state->capa_start;
2324                              i < rdev->wiphy.num_iftype_ext_capab; i++) {
2325                                 const struct wiphy_iftype_ext_capab *capab;
2326
2327                                 capab = &rdev->wiphy.iftype_ext_capab[i];
2328
2329                                 nested_ext_capab = nla_nest_start_noflag(msg,
2330                                                                          i);
2331                                 if (!nested_ext_capab ||
2332                                     nla_put_u32(msg, NL80211_ATTR_IFTYPE,
2333                                                 capab->iftype) ||
2334                                     nla_put(msg, NL80211_ATTR_EXT_CAPA,
2335                                             capab->extended_capabilities_len,
2336                                             capab->extended_capabilities) ||
2337                                     nla_put(msg, NL80211_ATTR_EXT_CAPA_MASK,
2338                                             capab->extended_capabilities_len,
2339                                             capab->extended_capabilities_mask))
2340                                         goto nla_put_failure;
2341
2342                                 nla_nest_end(msg, nested_ext_capab);
2343                                 if (state->split)
2344                                         break;
2345                         }
2346                         nla_nest_end(msg, nested);
2347                         if (i < rdev->wiphy.num_iftype_ext_capab) {
2348                                 state->capa_start = i + 1;
2349                                 break;
2350                         }
2351                 }
2352
2353                 if (nla_put_u32(msg, NL80211_ATTR_BANDS,
2354                                 rdev->wiphy.nan_supported_bands))
2355                         goto nla_put_failure;
2356
2357                 if (wiphy_ext_feature_isset(&rdev->wiphy,
2358                                             NL80211_EXT_FEATURE_TXQS)) {
2359                         struct cfg80211_txq_stats txqstats = {};
2360                         int res;
2361
2362                         res = rdev_get_txq_stats(rdev, NULL, &txqstats);
2363                         if (!res &&
2364                             !nl80211_put_txq_stats(msg, &txqstats,
2365                                                    NL80211_ATTR_TXQ_STATS))
2366                                 goto nla_put_failure;
2367
2368                         if (nla_put_u32(msg, NL80211_ATTR_TXQ_LIMIT,
2369                                         rdev->wiphy.txq_limit))
2370                                 goto nla_put_failure;
2371                         if (nla_put_u32(msg, NL80211_ATTR_TXQ_MEMORY_LIMIT,
2372                                         rdev->wiphy.txq_memory_limit))
2373                                 goto nla_put_failure;
2374                         if (nla_put_u32(msg, NL80211_ATTR_TXQ_QUANTUM,
2375                                         rdev->wiphy.txq_quantum))
2376                                 goto nla_put_failure;
2377                 }
2378
2379                 state->split_start++;
2380                 break;
2381         case 14:
2382                 if (nl80211_send_pmsr_capa(rdev, msg))
2383                         goto nla_put_failure;
2384
2385                 state->split_start++;
2386                 break;
2387         case 15:
2388                 if (rdev->wiphy.akm_suites &&
2389                     nla_put(msg, NL80211_ATTR_AKM_SUITES,
2390                             sizeof(u32) * rdev->wiphy.n_akm_suites,
2391                             rdev->wiphy.akm_suites))
2392                         goto nla_put_failure;
2393
2394                 /* done */
2395                 state->split_start = 0;
2396                 break;
2397         }
2398  finish:
2399         genlmsg_end(msg, hdr);
2400         return 0;
2401
2402  nla_put_failure:
2403         genlmsg_cancel(msg, hdr);
2404         return -EMSGSIZE;
2405 }
2406
2407 static int nl80211_dump_wiphy_parse(struct sk_buff *skb,
2408                                     struct netlink_callback *cb,
2409                                     struct nl80211_dump_wiphy_state *state)
2410 {
2411         struct nlattr **tb = kcalloc(NUM_NL80211_ATTR, sizeof(*tb), GFP_KERNEL);
2412         int ret;
2413
2414         if (!tb)
2415                 return -ENOMEM;
2416
2417         ret = nlmsg_parse_deprecated(cb->nlh,
2418                                      GENL_HDRLEN + nl80211_fam.hdrsize,
2419                                      tb, nl80211_fam.maxattr,
2420                                      nl80211_policy, NULL);
2421         /* ignore parse errors for backward compatibility */
2422         if (ret) {
2423                 ret = 0;
2424                 goto out;
2425         }
2426
2427         state->split = tb[NL80211_ATTR_SPLIT_WIPHY_DUMP];
2428         if (tb[NL80211_ATTR_WIPHY])
2429                 state->filter_wiphy = nla_get_u32(tb[NL80211_ATTR_WIPHY]);
2430         if (tb[NL80211_ATTR_WDEV])
2431                 state->filter_wiphy = nla_get_u64(tb[NL80211_ATTR_WDEV]) >> 32;
2432         if (tb[NL80211_ATTR_IFINDEX]) {
2433                 struct net_device *netdev;
2434                 struct cfg80211_registered_device *rdev;
2435                 int ifidx = nla_get_u32(tb[NL80211_ATTR_IFINDEX]);
2436
2437                 netdev = __dev_get_by_index(sock_net(skb->sk), ifidx);
2438                 if (!netdev) {
2439                         ret = -ENODEV;
2440                         goto out;
2441                 }
2442                 if (netdev->ieee80211_ptr) {
2443                         rdev = wiphy_to_rdev(
2444                                 netdev->ieee80211_ptr->wiphy);
2445                         state->filter_wiphy = rdev->wiphy_idx;
2446                 }
2447         }
2448
2449         ret = 0;
2450 out:
2451         kfree(tb);
2452         return ret;
2453 }
2454
2455 static int nl80211_dump_wiphy(struct sk_buff *skb, struct netlink_callback *cb)
2456 {
2457         int idx = 0, ret;
2458         struct nl80211_dump_wiphy_state *state = (void *)cb->args[0];
2459         struct cfg80211_registered_device *rdev;
2460
2461         rtnl_lock();
2462         if (!state) {
2463                 state = kzalloc(sizeof(*state), GFP_KERNEL);
2464                 if (!state) {
2465                         rtnl_unlock();
2466                         return -ENOMEM;
2467                 }
2468                 state->filter_wiphy = -1;
2469                 ret = nl80211_dump_wiphy_parse(skb, cb, state);
2470                 if (ret) {
2471                         kfree(state);
2472                         rtnl_unlock();
2473                         return ret;
2474                 }
2475                 cb->args[0] = (long)state;
2476         }
2477
2478         list_for_each_entry(rdev, &cfg80211_rdev_list, list) {
2479                 if (!net_eq(wiphy_net(&rdev->wiphy), sock_net(skb->sk)))
2480                         continue;
2481                 if (++idx <= state->start)
2482                         continue;
2483                 if (state->filter_wiphy != -1 &&
2484                     state->filter_wiphy != rdev->wiphy_idx)
2485                         continue;
2486                 /* attempt to fit multiple wiphy data chunks into the skb */
2487                 do {
2488                         ret = nl80211_send_wiphy(rdev, NL80211_CMD_NEW_WIPHY,
2489                                                  skb,
2490                                                  NETLINK_CB(cb->skb).portid,
2491                                                  cb->nlh->nlmsg_seq,
2492                                                  NLM_F_MULTI, state);
2493                         if (ret < 0) {
2494                                 /*
2495                                  * If sending the wiphy data didn't fit (ENOBUFS
2496                                  * or EMSGSIZE returned), this SKB is still
2497                                  * empty (so it's not too big because another
2498                                  * wiphy dataset is already in the skb) and
2499                                  * we've not tried to adjust the dump allocation
2500                                  * yet ... then adjust the alloc size to be
2501                                  * bigger, and return 1 but with the empty skb.
2502                                  * This results in an empty message being RX'ed
2503                                  * in userspace, but that is ignored.
2504                                  *
2505                                  * We can then retry with the larger buffer.
2506                                  */
2507                                 if ((ret == -ENOBUFS || ret == -EMSGSIZE) &&
2508                                     !skb->len && !state->split &&
2509                                     cb->min_dump_alloc < 4096) {
2510                                         cb->min_dump_alloc = 4096;
2511                                         state->split_start = 0;
2512                                         rtnl_unlock();
2513                                         return 1;
2514                                 }
2515                                 idx--;
2516                                 break;
2517                         }
2518                 } while (state->split_start > 0);
2519                 break;
2520         }
2521         rtnl_unlock();
2522
2523         state->start = idx;
2524
2525         return skb->len;
2526 }
2527
2528 static int nl80211_dump_wiphy_done(struct netlink_callback *cb)
2529 {
2530         kfree((void *)cb->args[0]);
2531         return 0;
2532 }
2533
2534 static int nl80211_get_wiphy(struct sk_buff *skb, struct genl_info *info)
2535 {
2536         struct sk_buff *msg;
2537         struct cfg80211_registered_device *rdev = info->user_ptr[0];
2538         struct nl80211_dump_wiphy_state state = {};
2539
2540         msg = nlmsg_new(4096, GFP_KERNEL);
2541         if (!msg)
2542                 return -ENOMEM;
2543
2544         if (nl80211_send_wiphy(rdev, NL80211_CMD_NEW_WIPHY, msg,
2545                                info->snd_portid, info->snd_seq, 0,
2546                                &state) < 0) {
2547                 nlmsg_free(msg);
2548                 return -ENOBUFS;
2549         }
2550
2551         return genlmsg_reply(msg, info);
2552 }
2553
2554 static const struct nla_policy txq_params_policy[NL80211_TXQ_ATTR_MAX + 1] = {
2555         [NL80211_TXQ_ATTR_QUEUE]                = { .type = NLA_U8 },
2556         [NL80211_TXQ_ATTR_TXOP]                 = { .type = NLA_U16 },
2557         [NL80211_TXQ_ATTR_CWMIN]                = { .type = NLA_U16 },
2558         [NL80211_TXQ_ATTR_CWMAX]                = { .type = NLA_U16 },
2559         [NL80211_TXQ_ATTR_AIFS]                 = { .type = NLA_U8 },
2560 };
2561
2562 static int parse_txq_params(struct nlattr *tb[],
2563                             struct ieee80211_txq_params *txq_params)
2564 {
2565         u8 ac;
2566
2567         if (!tb[NL80211_TXQ_ATTR_AC] || !tb[NL80211_TXQ_ATTR_TXOP] ||
2568             !tb[NL80211_TXQ_ATTR_CWMIN] || !tb[NL80211_TXQ_ATTR_CWMAX] ||
2569             !tb[NL80211_TXQ_ATTR_AIFS])
2570                 return -EINVAL;
2571
2572         ac = nla_get_u8(tb[NL80211_TXQ_ATTR_AC]);
2573         txq_params->txop = nla_get_u16(tb[NL80211_TXQ_ATTR_TXOP]);
2574         txq_params->cwmin = nla_get_u16(tb[NL80211_TXQ_ATTR_CWMIN]);
2575         txq_params->cwmax = nla_get_u16(tb[NL80211_TXQ_ATTR_CWMAX]);
2576         txq_params->aifs = nla_get_u8(tb[NL80211_TXQ_ATTR_AIFS]);
2577
2578         if (ac >= NL80211_NUM_ACS)
2579                 return -EINVAL;
2580         txq_params->ac = array_index_nospec(ac, NL80211_NUM_ACS);
2581         return 0;
2582 }
2583
2584 static bool nl80211_can_set_dev_channel(struct wireless_dev *wdev)
2585 {
2586         /*
2587          * You can only set the channel explicitly for WDS interfaces,
2588          * all others have their channel managed via their respective
2589          * "establish a connection" command (connect, join, ...)
2590          *
2591          * For AP/GO and mesh mode, the channel can be set with the
2592          * channel userspace API, but is only stored and passed to the
2593          * low-level driver when the AP starts or the mesh is joined.
2594          * This is for backward compatibility, userspace can also give
2595          * the channel in the start-ap or join-mesh commands instead.
2596          *
2597          * Monitors are special as they are normally slaved to
2598          * whatever else is going on, so they have their own special
2599          * operation to set the monitor channel if possible.
2600          */
2601         return !wdev ||
2602                 wdev->iftype == NL80211_IFTYPE_AP ||
2603                 wdev->iftype == NL80211_IFTYPE_MESH_POINT ||
2604                 wdev->iftype == NL80211_IFTYPE_MONITOR ||
2605                 wdev->iftype == NL80211_IFTYPE_P2P_GO;
2606 }
2607
2608 int nl80211_parse_chandef(struct cfg80211_registered_device *rdev,
2609                           struct genl_info *info,
2610                           struct cfg80211_chan_def *chandef)
2611 {
2612         struct netlink_ext_ack *extack = info->extack;
2613         struct nlattr **attrs = info->attrs;
2614         u32 control_freq;
2615
2616         if (!attrs[NL80211_ATTR_WIPHY_FREQ])
2617                 return -EINVAL;
2618
2619         control_freq = nla_get_u32(attrs[NL80211_ATTR_WIPHY_FREQ]);
2620
2621         chandef->chan = ieee80211_get_channel(&rdev->wiphy, control_freq);
2622         chandef->width = NL80211_CHAN_WIDTH_20_NOHT;
2623         chandef->center_freq1 = control_freq;
2624         chandef->center_freq2 = 0;
2625
2626         /* Primary channel not allowed */
2627         if (!chandef->chan || chandef->chan->flags & IEEE80211_CHAN_DISABLED) {
2628                 NL_SET_ERR_MSG_ATTR(extack, attrs[NL80211_ATTR_WIPHY_FREQ],
2629                                     "Channel is disabled");
2630                 return -EINVAL;
2631         }
2632
2633         if (attrs[NL80211_ATTR_WIPHY_CHANNEL_TYPE]) {
2634                 enum nl80211_channel_type chantype;
2635
2636                 chantype = nla_get_u32(attrs[NL80211_ATTR_WIPHY_CHANNEL_TYPE]);
2637
2638                 switch (chantype) {
2639                 case NL80211_CHAN_NO_HT:
2640                 case NL80211_CHAN_HT20:
2641                 case NL80211_CHAN_HT40PLUS:
2642                 case NL80211_CHAN_HT40MINUS:
2643                         cfg80211_chandef_create(chandef, chandef->chan,
2644                                                 chantype);
2645                         /* user input for center_freq is incorrect */
2646                         if (attrs[NL80211_ATTR_CENTER_FREQ1] &&
2647                             chandef->center_freq1 != nla_get_u32(attrs[NL80211_ATTR_CENTER_FREQ1])) {
2648                                 NL_SET_ERR_MSG_ATTR(extack,
2649                                                     attrs[NL80211_ATTR_CENTER_FREQ1],
2650                                                     "bad center frequency 1");
2651                                 return -EINVAL;
2652                         }
2653                         /* center_freq2 must be zero */
2654                         if (attrs[NL80211_ATTR_CENTER_FREQ2] &&
2655                             nla_get_u32(attrs[NL80211_ATTR_CENTER_FREQ2])) {
2656                                 NL_SET_ERR_MSG_ATTR(extack,
2657                                                     attrs[NL80211_ATTR_CENTER_FREQ2],
2658                                                     "center frequency 2 can't be used");
2659                                 return -EINVAL;
2660                         }
2661                         break;
2662                 default:
2663                         NL_SET_ERR_MSG_ATTR(extack,
2664                                             attrs[NL80211_ATTR_WIPHY_CHANNEL_TYPE],
2665                                             "invalid channel type");
2666                         return -EINVAL;
2667                 }
2668         } else if (attrs[NL80211_ATTR_CHANNEL_WIDTH]) {
2669                 chandef->width =
2670                         nla_get_u32(attrs[NL80211_ATTR_CHANNEL_WIDTH]);
2671                 if (attrs[NL80211_ATTR_CENTER_FREQ1])
2672                         chandef->center_freq1 =
2673                                 nla_get_u32(attrs[NL80211_ATTR_CENTER_FREQ1]);
2674                 if (attrs[NL80211_ATTR_CENTER_FREQ2])
2675                         chandef->center_freq2 =
2676                                 nla_get_u32(attrs[NL80211_ATTR_CENTER_FREQ2]);
2677         }
2678
2679         if (!cfg80211_chandef_valid(chandef)) {
2680                 NL_SET_ERR_MSG(extack, "invalid channel definition");
2681                 return -EINVAL;
2682         }
2683
2684         if (!cfg80211_chandef_usable(&rdev->wiphy, chandef,
2685                                      IEEE80211_CHAN_DISABLED)) {
2686                 NL_SET_ERR_MSG(extack, "(extension) channel is disabled");
2687                 return -EINVAL;
2688         }
2689
2690         if ((chandef->width == NL80211_CHAN_WIDTH_5 ||
2691              chandef->width == NL80211_CHAN_WIDTH_10) &&
2692             !(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_5_10_MHZ)) {
2693                 NL_SET_ERR_MSG(extack, "5/10 MHz not supported");
2694                 return -EINVAL;
2695         }
2696
2697         return 0;
2698 }
2699
2700 static int __nl80211_set_channel(struct cfg80211_registered_device *rdev,
2701                                  struct net_device *dev,
2702                                  struct genl_info *info)
2703 {
2704         struct cfg80211_chan_def chandef;
2705         int result;
2706         enum nl80211_iftype iftype = NL80211_IFTYPE_MONITOR;
2707         struct wireless_dev *wdev = NULL;
2708
2709         if (dev)
2710                 wdev = dev->ieee80211_ptr;
2711         if (!nl80211_can_set_dev_channel(wdev))
2712                 return -EOPNOTSUPP;
2713         if (wdev)
2714                 iftype = wdev->iftype;
2715
2716         result = nl80211_parse_chandef(rdev, info, &chandef);
2717         if (result)
2718                 return result;
2719
2720         switch (iftype) {
2721         case NL80211_IFTYPE_AP:
2722         case NL80211_IFTYPE_P2P_GO:
2723                 if (!cfg80211_reg_can_beacon_relax(&rdev->wiphy, &chandef,
2724                                                    iftype)) {
2725                         result = -EINVAL;
2726                         break;
2727                 }
2728                 if (wdev->beacon_interval) {
2729                         if (!dev || !rdev->ops->set_ap_chanwidth ||
2730                             !(rdev->wiphy.features &
2731                               NL80211_FEATURE_AP_MODE_CHAN_WIDTH_CHANGE)) {
2732                                 result = -EBUSY;
2733                                 break;
2734                         }
2735
2736                         /* Only allow dynamic channel width changes */
2737                         if (chandef.chan != wdev->preset_chandef.chan) {
2738                                 result = -EBUSY;
2739                                 break;
2740                         }
2741                         result = rdev_set_ap_chanwidth(rdev, dev, &chandef);
2742                         if (result)
2743                                 break;
2744                 }
2745                 wdev->preset_chandef = chandef;
2746                 result = 0;
2747                 break;
2748         case NL80211_IFTYPE_MESH_POINT:
2749                 result = cfg80211_set_mesh_channel(rdev, wdev, &chandef);
2750                 break;
2751         case NL80211_IFTYPE_MONITOR:
2752                 result = cfg80211_set_monitor_channel(rdev, &chandef);
2753                 break;
2754         default:
2755                 result = -EINVAL;
2756         }
2757
2758         return result;
2759 }
2760
2761 static int nl80211_set_channel(struct sk_buff *skb, struct genl_info *info)
2762 {
2763         struct cfg80211_registered_device *rdev = info->user_ptr[0];
2764         struct net_device *netdev = info->user_ptr[1];
2765
2766         return __nl80211_set_channel(rdev, netdev, info);
2767 }
2768
2769 static int nl80211_set_wds_peer(struct sk_buff *skb, struct genl_info *info)
2770 {
2771         struct cfg80211_registered_device *rdev = info->user_ptr[0];
2772         struct net_device *dev = info->user_ptr[1];
2773         struct wireless_dev *wdev = dev->ieee80211_ptr;
2774         const u8 *bssid;
2775
2776         if (!info->attrs[NL80211_ATTR_MAC])
2777                 return -EINVAL;
2778
2779         if (netif_running(dev))
2780                 return -EBUSY;
2781
2782         if (!rdev->ops->set_wds_peer)
2783                 return -EOPNOTSUPP;
2784
2785         if (wdev->iftype != NL80211_IFTYPE_WDS)
2786                 return -EOPNOTSUPP;
2787
2788         bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
2789         return rdev_set_wds_peer(rdev, dev, bssid);
2790 }
2791
2792 static int nl80211_set_wiphy(struct sk_buff *skb, struct genl_info *info)
2793 {
2794         struct cfg80211_registered_device *rdev;
2795         struct net_device *netdev = NULL;
2796         struct wireless_dev *wdev;
2797         int result = 0, rem_txq_params = 0;
2798         struct nlattr *nl_txq_params;
2799         u32 changed;
2800         u8 retry_short = 0, retry_long = 0;
2801         u32 frag_threshold = 0, rts_threshold = 0;
2802         u8 coverage_class = 0;
2803         u32 txq_limit = 0, txq_memory_limit = 0, txq_quantum = 0;
2804
2805         ASSERT_RTNL();
2806
2807         /*
2808          * Try to find the wiphy and netdev. Normally this
2809          * function shouldn't need the netdev, but this is
2810          * done for backward compatibility -- previously
2811          * setting the channel was done per wiphy, but now
2812          * it is per netdev. Previous userland like hostapd
2813          * also passed a netdev to set_wiphy, so that it is
2814          * possible to let that go to the right netdev!
2815          */
2816
2817         if (info->attrs[NL80211_ATTR_IFINDEX]) {
2818                 int ifindex = nla_get_u32(info->attrs[NL80211_ATTR_IFINDEX]);
2819
2820                 netdev = __dev_get_by_index(genl_info_net(info), ifindex);
2821                 if (netdev && netdev->ieee80211_ptr)
2822                         rdev = wiphy_to_rdev(netdev->ieee80211_ptr->wiphy);
2823                 else
2824                         netdev = NULL;
2825         }
2826
2827         if (!netdev) {
2828                 rdev = __cfg80211_rdev_from_attrs(genl_info_net(info),
2829                                                   info->attrs);
2830                 if (IS_ERR(rdev))
2831                         return PTR_ERR(rdev);
2832                 wdev = NULL;
2833                 netdev = NULL;
2834                 result = 0;
2835         } else
2836                 wdev = netdev->ieee80211_ptr;
2837
2838         /*
2839          * end workaround code, by now the rdev is available
2840          * and locked, and wdev may or may not be NULL.
2841          */
2842
2843         if (info->attrs[NL80211_ATTR_WIPHY_NAME])
2844                 result = cfg80211_dev_rename(
2845                         rdev, nla_data(info->attrs[NL80211_ATTR_WIPHY_NAME]));
2846
2847         if (result)
2848                 return result;
2849
2850         if (info->attrs[NL80211_ATTR_WIPHY_TXQ_PARAMS]) {
2851                 struct ieee80211_txq_params txq_params;
2852                 struct nlattr *tb[NL80211_TXQ_ATTR_MAX + 1];
2853
2854                 if (!rdev->ops->set_txq_params)
2855                         return -EOPNOTSUPP;
2856
2857                 if (!netdev)
2858                         return -EINVAL;
2859
2860                 if (netdev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
2861                     netdev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
2862                         return -EINVAL;
2863
2864                 if (!netif_running(netdev))
2865                         return -ENETDOWN;
2866
2867                 nla_for_each_nested(nl_txq_params,
2868                                     info->attrs[NL80211_ATTR_WIPHY_TXQ_PARAMS],
2869                                     rem_txq_params) {
2870                         result = nla_parse_nested_deprecated(tb,
2871                                                              NL80211_TXQ_ATTR_MAX,
2872                                                              nl_txq_params,
2873                                                              txq_params_policy,
2874                                                              info->extack);
2875                         if (result)
2876                                 return result;
2877                         result = parse_txq_params(tb, &txq_params);
2878                         if (result)
2879                                 return result;
2880
2881                         result = rdev_set_txq_params(rdev, netdev,
2882                                                      &txq_params);
2883                         if (result)
2884                                 return result;
2885                 }
2886         }
2887
2888         if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
2889                 result = __nl80211_set_channel(
2890                         rdev,
2891                         nl80211_can_set_dev_channel(wdev) ? netdev : NULL,
2892                         info);
2893                 if (result)
2894                         return result;
2895         }
2896
2897         if (info->attrs[NL80211_ATTR_WIPHY_TX_POWER_SETTING]) {
2898                 struct wireless_dev *txp_wdev = wdev;
2899                 enum nl80211_tx_power_setting type;
2900                 int idx, mbm = 0;
2901
2902                 if (!(rdev->wiphy.features & NL80211_FEATURE_VIF_TXPOWER))
2903                         txp_wdev = NULL;
2904
2905                 if (!rdev->ops->set_tx_power)
2906                         return -EOPNOTSUPP;
2907
2908                 idx = NL80211_ATTR_WIPHY_TX_POWER_SETTING;
2909                 type = nla_get_u32(info->attrs[idx]);
2910
2911                 if (!info->attrs[NL80211_ATTR_WIPHY_TX_POWER_LEVEL] &&
2912                     (type != NL80211_TX_POWER_AUTOMATIC))
2913                         return -EINVAL;
2914
2915                 if (type != NL80211_TX_POWER_AUTOMATIC) {
2916                         idx = NL80211_ATTR_WIPHY_TX_POWER_LEVEL;
2917                         mbm = nla_get_u32(info->attrs[idx]);
2918                 }
2919
2920                 result = rdev_set_tx_power(rdev, txp_wdev, type, mbm);
2921                 if (result)
2922                         return result;
2923         }
2924
2925         if (info->attrs[NL80211_ATTR_WIPHY_ANTENNA_TX] &&
2926             info->attrs[NL80211_ATTR_WIPHY_ANTENNA_RX]) {
2927                 u32 tx_ant, rx_ant;
2928
2929                 if ((!rdev->wiphy.available_antennas_tx &&
2930                      !rdev->wiphy.available_antennas_rx) ||
2931                     !rdev->ops->set_antenna)
2932                         return -EOPNOTSUPP;
2933
2934                 tx_ant = nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_ANTENNA_TX]);
2935                 rx_ant = nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_ANTENNA_RX]);
2936
2937                 /* reject antenna configurations which don't match the
2938                  * available antenna masks, except for the "all" mask */
2939                 if ((~tx_ant && (tx_ant & ~rdev->wiphy.available_antennas_tx)) ||
2940                     (~rx_ant && (rx_ant & ~rdev->wiphy.available_antennas_rx)))
2941                         return -EINVAL;
2942
2943                 tx_ant = tx_ant & rdev->wiphy.available_antennas_tx;
2944                 rx_ant = rx_ant & rdev->wiphy.available_antennas_rx;
2945
2946                 result = rdev_set_antenna(rdev, tx_ant, rx_ant);
2947                 if (result)
2948                         return result;
2949         }
2950
2951         changed = 0;
2952
2953         if (info->attrs[NL80211_ATTR_WIPHY_RETRY_SHORT]) {
2954                 retry_short = nla_get_u8(
2955                         info->attrs[NL80211_ATTR_WIPHY_RETRY_SHORT]);
2956
2957                 changed |= WIPHY_PARAM_RETRY_SHORT;
2958         }
2959
2960         if (info->attrs[NL80211_ATTR_WIPHY_RETRY_LONG]) {
2961                 retry_long = nla_get_u8(
2962                         info->attrs[NL80211_ATTR_WIPHY_RETRY_LONG]);
2963
2964                 changed |= WIPHY_PARAM_RETRY_LONG;
2965         }
2966
2967         if (info->attrs[NL80211_ATTR_WIPHY_FRAG_THRESHOLD]) {
2968                 frag_threshold = nla_get_u32(
2969                         info->attrs[NL80211_ATTR_WIPHY_FRAG_THRESHOLD]);
2970                 if (frag_threshold < 256)
2971                         return -EINVAL;
2972
2973                 if (frag_threshold != (u32) -1) {
2974                         /*
2975                          * Fragments (apart from the last one) are required to
2976                          * have even length. Make the fragmentation code
2977                          * simpler by stripping LSB should someone try to use
2978                          * odd threshold value.
2979                          */
2980                         frag_threshold &= ~0x1;
2981                 }
2982                 changed |= WIPHY_PARAM_FRAG_THRESHOLD;
2983         }
2984
2985         if (info->attrs[NL80211_ATTR_WIPHY_RTS_THRESHOLD]) {
2986                 rts_threshold = nla_get_u32(
2987                         info->attrs[NL80211_ATTR_WIPHY_RTS_THRESHOLD]);
2988                 changed |= WIPHY_PARAM_RTS_THRESHOLD;
2989         }
2990
2991         if (info->attrs[NL80211_ATTR_WIPHY_COVERAGE_CLASS]) {
2992                 if (info->attrs[NL80211_ATTR_WIPHY_DYN_ACK])
2993                         return -EINVAL;
2994
2995                 coverage_class = nla_get_u8(
2996                         info->attrs[NL80211_ATTR_WIPHY_COVERAGE_CLASS]);
2997                 changed |= WIPHY_PARAM_COVERAGE_CLASS;
2998         }
2999
3000         if (info->attrs[NL80211_ATTR_WIPHY_DYN_ACK]) {
3001                 if (!(rdev->wiphy.features & NL80211_FEATURE_ACKTO_ESTIMATION))
3002                         return -EOPNOTSUPP;
3003
3004                 changed |= WIPHY_PARAM_DYN_ACK;
3005         }
3006
3007         if (info->attrs[NL80211_ATTR_TXQ_LIMIT]) {
3008                 if (!wiphy_ext_feature_isset(&rdev->wiphy,
3009                                              NL80211_EXT_FEATURE_TXQS))
3010                         return -EOPNOTSUPP;
3011                 txq_limit = nla_get_u32(
3012                         info->attrs[NL80211_ATTR_TXQ_LIMIT]);
3013                 changed |= WIPHY_PARAM_TXQ_LIMIT;
3014         }
3015
3016         if (info->attrs[NL80211_ATTR_TXQ_MEMORY_LIMIT]) {
3017                 if (!wiphy_ext_feature_isset(&rdev->wiphy,
3018                                              NL80211_EXT_FEATURE_TXQS))
3019                         return -EOPNOTSUPP;
3020                 txq_memory_limit = nla_get_u32(
3021                         info->attrs[NL80211_ATTR_TXQ_MEMORY_LIMIT]);
3022                 changed |= WIPHY_PARAM_TXQ_MEMORY_LIMIT;
3023         }
3024
3025         if (info->attrs[NL80211_ATTR_TXQ_QUANTUM]) {
3026                 if (!wiphy_ext_feature_isset(&rdev->wiphy,
3027                                              NL80211_EXT_FEATURE_TXQS))
3028                         return -EOPNOTSUPP;
3029                 txq_quantum = nla_get_u32(
3030                         info->attrs[NL80211_ATTR_TXQ_QUANTUM]);
3031                 changed |= WIPHY_PARAM_TXQ_QUANTUM;
3032         }
3033
3034         if (changed) {
3035                 u8 old_retry_short, old_retry_long;
3036                 u32 old_frag_threshold, old_rts_threshold;
3037                 u8 old_coverage_class;
3038                 u32 old_txq_limit, old_txq_memory_limit, old_txq_quantum;
3039
3040                 if (!rdev->ops->set_wiphy_params)
3041                         return -EOPNOTSUPP;
3042
3043                 old_retry_short = rdev->wiphy.retry_short;
3044                 old_retry_long = rdev->wiphy.retry_long;
3045                 old_frag_threshold = rdev->wiphy.frag_threshold;
3046                 old_rts_threshold = rdev->wiphy.rts_threshold;
3047                 old_coverage_class = rdev->wiphy.coverage_class;
3048                 old_txq_limit = rdev->wiphy.txq_limit;
3049                 old_txq_memory_limit = rdev->wiphy.txq_memory_limit;
3050                 old_txq_quantum = rdev->wiphy.txq_quantum;
3051
3052                 if (changed & WIPHY_PARAM_RETRY_SHORT)
3053                         rdev->wiphy.retry_short = retry_short;
3054                 if (changed & WIPHY_PARAM_RETRY_LONG)
3055                         rdev->wiphy.retry_long = retry_long;
3056                 if (changed & WIPHY_PARAM_FRAG_THRESHOLD)
3057                         rdev->wiphy.frag_threshold = frag_threshold;
3058                 if (changed & WIPHY_PARAM_RTS_THRESHOLD)
3059                         rdev->wiphy.rts_threshold = rts_threshold;
3060                 if (changed & WIPHY_PARAM_COVERAGE_CLASS)
3061                         rdev->wiphy.coverage_class = coverage_class;
3062                 if (changed & WIPHY_PARAM_TXQ_LIMIT)
3063                         rdev->wiphy.txq_limit = txq_limit;
3064                 if (changed & WIPHY_PARAM_TXQ_MEMORY_LIMIT)
3065                         rdev->wiphy.txq_memory_limit = txq_memory_limit;
3066                 if (changed & WIPHY_PARAM_TXQ_QUANTUM)
3067                         rdev->wiphy.txq_quantum = txq_quantum;
3068
3069                 result = rdev_set_wiphy_params(rdev, changed);
3070                 if (result) {
3071                         rdev->wiphy.retry_short = old_retry_short;
3072                         rdev->wiphy.retry_long = old_retry_long;
3073                         rdev->wiphy.frag_threshold = old_frag_threshold;
3074                         rdev->wiphy.rts_threshold = old_rts_threshold;
3075                         rdev->wiphy.coverage_class = old_coverage_class;
3076                         rdev->wiphy.txq_limit = old_txq_limit;
3077                         rdev->wiphy.txq_memory_limit = old_txq_memory_limit;
3078                         rdev->wiphy.txq_quantum = old_txq_quantum;
3079                         return result;
3080                 }
3081         }
3082         return 0;
3083 }
3084
3085 static int nl80211_send_chandef(struct sk_buff *msg,
3086                                 const struct cfg80211_chan_def *chandef)
3087 {
3088         if (WARN_ON(!cfg80211_chandef_valid(chandef)))
3089                 return -EINVAL;
3090
3091         if (nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ,
3092                         chandef->chan->center_freq))
3093                 return -ENOBUFS;
3094         switch (chandef->width) {
3095         case NL80211_CHAN_WIDTH_20_NOHT:
3096         case NL80211_CHAN_WIDTH_20:
3097         case NL80211_CHAN_WIDTH_40:
3098                 if (nla_put_u32(msg, NL80211_ATTR_WIPHY_CHANNEL_TYPE,
3099                                 cfg80211_get_chandef_type(chandef)))
3100                         return -ENOBUFS;
3101                 break;
3102         default:
3103                 break;
3104         }
3105         if (nla_put_u32(msg, NL80211_ATTR_CHANNEL_WIDTH, chandef->width))
3106                 return -ENOBUFS;
3107         if (nla_put_u32(msg, NL80211_ATTR_CENTER_FREQ1, chandef->center_freq1))
3108                 return -ENOBUFS;
3109         if (chandef->center_freq2 &&
3110             nla_put_u32(msg, NL80211_ATTR_CENTER_FREQ2, chandef->center_freq2))
3111                 return -ENOBUFS;
3112         return 0;
3113 }
3114
3115 static int nl80211_send_iface(struct sk_buff *msg, u32 portid, u32 seq, int flags,
3116                               struct cfg80211_registered_device *rdev,
3117                               struct wireless_dev *wdev,
3118                               enum nl80211_commands cmd)
3119 {
3120         struct net_device *dev = wdev->netdev;
3121         void *hdr;
3122
3123         WARN_ON(cmd != NL80211_CMD_NEW_INTERFACE &&
3124                 cmd != NL80211_CMD_DEL_INTERFACE &&
3125                 cmd != NL80211_CMD_SET_INTERFACE);
3126
3127         hdr = nl80211hdr_put(msg, portid, seq, flags, cmd);
3128         if (!hdr)
3129                 return -1;
3130
3131         if (dev &&
3132             (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
3133              nla_put_string(msg, NL80211_ATTR_IFNAME, dev->name)))
3134                 goto nla_put_failure;
3135
3136         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
3137             nla_put_u32(msg, NL80211_ATTR_IFTYPE, wdev->iftype) ||
3138             nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
3139                               NL80211_ATTR_PAD) ||
3140             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, wdev_address(wdev)) ||
3141             nla_put_u32(msg, NL80211_ATTR_GENERATION,
3142                         rdev->devlist_generation ^
3143                         (cfg80211_rdev_list_generation << 2)) ||
3144             nla_put_u8(msg, NL80211_ATTR_4ADDR, wdev->use_4addr))
3145                 goto nla_put_failure;
3146
3147         if (rdev->ops->get_channel) {
3148                 int ret;
3149                 struct cfg80211_chan_def chandef;
3150
3151                 ret = rdev_get_channel(rdev, wdev, &chandef);
3152                 if (ret == 0) {
3153                         if (nl80211_send_chandef(msg, &chandef))
3154                                 goto nla_put_failure;
3155                 }
3156         }
3157
3158         if (rdev->ops->get_tx_power) {
3159                 int dbm, ret;
3160
3161                 ret = rdev_get_tx_power(rdev, wdev, &dbm);
3162                 if (ret == 0 &&
3163                     nla_put_u32(msg, NL80211_ATTR_WIPHY_TX_POWER_LEVEL,
3164                                 DBM_TO_MBM(dbm)))
3165                         goto nla_put_failure;
3166         }
3167
3168         wdev_lock(wdev);
3169         switch (wdev->iftype) {
3170         case NL80211_IFTYPE_AP:
3171                 if (wdev->ssid_len &&
3172                     nla_put(msg, NL80211_ATTR_SSID, wdev->ssid_len, wdev->ssid))
3173                         goto nla_put_failure_locked;
3174                 break;
3175         case NL80211_IFTYPE_STATION:
3176         case NL80211_IFTYPE_P2P_CLIENT:
3177         case NL80211_IFTYPE_ADHOC: {
3178                 const u8 *ssid_ie;
3179                 if (!wdev->current_bss)
3180                         break;
3181                 rcu_read_lock();
3182                 ssid_ie = ieee80211_bss_get_ie(&wdev->current_bss->pub,
3183                                                WLAN_EID_SSID);
3184                 if (ssid_ie &&
3185                     nla_put(msg, NL80211_ATTR_SSID, ssid_ie[1], ssid_ie + 2))
3186                         goto nla_put_failure_rcu_locked;
3187                 rcu_read_unlock();
3188                 break;
3189                 }
3190         default:
3191                 /* nothing */
3192                 break;
3193         }
3194         wdev_unlock(wdev);
3195
3196         if (rdev->ops->get_txq_stats) {
3197                 struct cfg80211_txq_stats txqstats = {};
3198                 int ret = rdev_get_txq_stats(rdev, wdev, &txqstats);
3199
3200                 if (ret == 0 &&
3201                     !nl80211_put_txq_stats(msg, &txqstats,
3202                                            NL80211_ATTR_TXQ_STATS))
3203                         goto nla_put_failure;
3204         }
3205
3206         genlmsg_end(msg, hdr);
3207         return 0;
3208
3209  nla_put_failure_rcu_locked:
3210         rcu_read_unlock();
3211  nla_put_failure_locked:
3212         wdev_unlock(wdev);
3213  nla_put_failure:
3214         genlmsg_cancel(msg, hdr);
3215         return -EMSGSIZE;
3216 }
3217
3218 static int nl80211_dump_interface(struct sk_buff *skb, struct netlink_callback *cb)
3219 {
3220         int wp_idx = 0;
3221         int if_idx = 0;
3222         int wp_start = cb->args[0];
3223         int if_start = cb->args[1];
3224         int filter_wiphy = -1;
3225         struct cfg80211_registered_device *rdev;
3226         struct wireless_dev *wdev;
3227         int ret;
3228
3229         rtnl_lock();
3230         if (!cb->args[2]) {
3231                 struct nl80211_dump_wiphy_state state = {
3232                         .filter_wiphy = -1,
3233                 };
3234
3235                 ret = nl80211_dump_wiphy_parse(skb, cb, &state);
3236                 if (ret)
3237                         goto out_unlock;
3238
3239                 filter_wiphy = state.filter_wiphy;
3240
3241                 /*
3242                  * if filtering, set cb->args[2] to +1 since 0 is the default
3243                  * value needed to determine that parsing is necessary.
3244                  */
3245                 if (filter_wiphy >= 0)
3246                         cb->args[2] = filter_wiphy + 1;
3247                 else
3248                         cb->args[2] = -1;
3249         } else if (cb->args[2] > 0) {
3250                 filter_wiphy = cb->args[2] - 1;
3251         }
3252
3253         list_for_each_entry(rdev, &cfg80211_rdev_list, list) {
3254                 if (!net_eq(wiphy_net(&rdev->wiphy), sock_net(skb->sk)))
3255                         continue;
3256                 if (wp_idx < wp_start) {
3257                         wp_idx++;
3258                         continue;
3259                 }
3260
3261                 if (filter_wiphy >= 0 && filter_wiphy != rdev->wiphy_idx)
3262                         continue;
3263
3264                 if_idx = 0;
3265
3266                 list_for_each_entry(wdev, &rdev->wiphy.wdev_list, list) {
3267                         if (if_idx < if_start) {
3268                                 if_idx++;
3269                                 continue;
3270                         }
3271                         if (nl80211_send_iface(skb, NETLINK_CB(cb->skb).portid,
3272                                                cb->nlh->nlmsg_seq, NLM_F_MULTI,
3273                                                rdev, wdev,
3274                                                NL80211_CMD_NEW_INTERFACE) < 0) {
3275                                 goto out;
3276                         }
3277                         if_idx++;
3278                 }
3279
3280                 wp_idx++;
3281         }
3282  out:
3283         cb->args[0] = wp_idx;
3284         cb->args[1] = if_idx;
3285
3286         ret = skb->len;
3287  out_unlock:
3288         rtnl_unlock();
3289
3290         return ret;
3291 }
3292
3293 static int nl80211_get_interface(struct sk_buff *skb, struct genl_info *info)
3294 {
3295         struct sk_buff *msg;
3296         struct cfg80211_registered_device *rdev = info->user_ptr[0];
3297         struct wireless_dev *wdev = info->user_ptr[1];
3298
3299         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
3300         if (!msg)
3301                 return -ENOMEM;
3302
3303         if (nl80211_send_iface(msg, info->snd_portid, info->snd_seq, 0,
3304                                rdev, wdev, NL80211_CMD_NEW_INTERFACE) < 0) {
3305                 nlmsg_free(msg);
3306                 return -ENOBUFS;
3307         }
3308
3309         return genlmsg_reply(msg, info);
3310 }
3311
3312 static const struct nla_policy mntr_flags_policy[NL80211_MNTR_FLAG_MAX + 1] = {
3313         [NL80211_MNTR_FLAG_FCSFAIL] = { .type = NLA_FLAG },
3314         [NL80211_MNTR_FLAG_PLCPFAIL] = { .type = NLA_FLAG },
3315         [NL80211_MNTR_FLAG_CONTROL] = { .type = NLA_FLAG },
3316         [NL80211_MNTR_FLAG_OTHER_BSS] = { .type = NLA_FLAG },
3317         [NL80211_MNTR_FLAG_COOK_FRAMES] = { .type = NLA_FLAG },
3318         [NL80211_MNTR_FLAG_ACTIVE] = { .type = NLA_FLAG },
3319 };
3320
3321 static int parse_monitor_flags(struct nlattr *nla, u32 *mntrflags)
3322 {
3323         struct nlattr *flags[NL80211_MNTR_FLAG_MAX + 1];
3324         int flag;
3325
3326         *mntrflags = 0;
3327
3328         if (!nla)
3329                 return -EINVAL;
3330
3331         if (nla_parse_nested_deprecated(flags, NL80211_MNTR_FLAG_MAX, nla, mntr_flags_policy, NULL))
3332                 return -EINVAL;
3333
3334         for (flag = 1; flag <= NL80211_MNTR_FLAG_MAX; flag++)
3335                 if (flags[flag])
3336                         *mntrflags |= (1<<flag);
3337
3338         *mntrflags |= MONITOR_FLAG_CHANGED;
3339
3340         return 0;
3341 }
3342
3343 static int nl80211_parse_mon_options(struct cfg80211_registered_device *rdev,
3344                                      enum nl80211_iftype type,
3345                                      struct genl_info *info,
3346                                      struct vif_params *params)
3347 {
3348         bool change = false;
3349         int err;
3350
3351         if (info->attrs[NL80211_ATTR_MNTR_FLAGS]) {
3352                 if (type != NL80211_IFTYPE_MONITOR)
3353                         return -EINVAL;
3354
3355                 err = parse_monitor_flags(info->attrs[NL80211_ATTR_MNTR_FLAGS],
3356                                           &params->flags);
3357                 if (err)
3358                         return err;
3359
3360                 change = true;
3361         }
3362
3363         if (params->flags & MONITOR_FLAG_ACTIVE &&
3364             !(rdev->wiphy.features & NL80211_FEATURE_ACTIVE_MONITOR))
3365                 return -EOPNOTSUPP;
3366
3367         if (info->attrs[NL80211_ATTR_MU_MIMO_GROUP_DATA]) {
3368                 const u8 *mumimo_groups;
3369                 u32 cap_flag = NL80211_EXT_FEATURE_MU_MIMO_AIR_SNIFFER;
3370
3371                 if (type != NL80211_IFTYPE_MONITOR)
3372                         return -EINVAL;
3373
3374                 if (!wiphy_ext_feature_isset(&rdev->wiphy, cap_flag))
3375                         return -EOPNOTSUPP;
3376
3377                 mumimo_groups =
3378                         nla_data(info->attrs[NL80211_ATTR_MU_MIMO_GROUP_DATA]);
3379
3380                 /* bits 0 and 63 are reserved and must be zero */
3381                 if ((mumimo_groups[0] & BIT(0)) ||
3382                     (mumimo_groups[VHT_MUMIMO_GROUPS_DATA_LEN - 1] & BIT(7)))
3383                         return -EINVAL;
3384
3385                 params->vht_mumimo_groups = mumimo_groups;
3386                 change = true;
3387         }
3388
3389         if (info->attrs[NL80211_ATTR_MU_MIMO_FOLLOW_MAC_ADDR]) {
3390                 u32 cap_flag = NL80211_EXT_FEATURE_MU_MIMO_AIR_SNIFFER;
3391
3392                 if (type != NL80211_IFTYPE_MONITOR)
3393                         return -EINVAL;
3394
3395                 if (!wiphy_ext_feature_isset(&rdev->wiphy, cap_flag))
3396                         return -EOPNOTSUPP;
3397
3398                 params->vht_mumimo_follow_addr =
3399                         nla_data(info->attrs[NL80211_ATTR_MU_MIMO_FOLLOW_MAC_ADDR]);
3400                 change = true;
3401         }
3402
3403         return change ? 1 : 0;
3404 }
3405
3406 static int nl80211_valid_4addr(struct cfg80211_registered_device *rdev,
3407                                struct net_device *netdev, u8 use_4addr,
3408                                enum nl80211_iftype iftype)
3409 {
3410         if (!use_4addr) {
3411                 if (netdev && (netdev->priv_flags & IFF_BRIDGE_PORT))
3412                         return -EBUSY;
3413                 return 0;
3414         }
3415
3416         switch (iftype) {
3417         case NL80211_IFTYPE_AP_VLAN:
3418                 if (rdev->wiphy.flags & WIPHY_FLAG_4ADDR_AP)
3419                         return 0;
3420                 break;
3421         case NL80211_IFTYPE_STATION:
3422                 if (rdev->wiphy.flags & WIPHY_FLAG_4ADDR_STATION)
3423                         return 0;
3424                 break;
3425         default:
3426                 break;
3427         }
3428
3429         return -EOPNOTSUPP;
3430 }
3431
3432 static int nl80211_set_interface(struct sk_buff *skb, struct genl_info *info)
3433 {
3434         struct cfg80211_registered_device *rdev = info->user_ptr[0];
3435         struct vif_params params;
3436         int err;
3437         enum nl80211_iftype otype, ntype;
3438         struct net_device *dev = info->user_ptr[1];
3439         bool change = false;
3440
3441         memset(&params, 0, sizeof(params));
3442
3443         otype = ntype = dev->ieee80211_ptr->iftype;
3444
3445         if (info->attrs[NL80211_ATTR_IFTYPE]) {
3446                 ntype = nla_get_u32(info->attrs[NL80211_ATTR_IFTYPE]);
3447                 if (otype != ntype)
3448                         change = true;
3449         }
3450
3451         if (info->attrs[NL80211_ATTR_MESH_ID]) {
3452                 struct wireless_dev *wdev = dev->ieee80211_ptr;
3453
3454                 if (ntype != NL80211_IFTYPE_MESH_POINT)
3455                         return -EINVAL;
3456                 if (netif_running(dev))
3457                         return -EBUSY;
3458
3459                 wdev_lock(wdev);
3460                 BUILD_BUG_ON(IEEE80211_MAX_SSID_LEN !=
3461                              IEEE80211_MAX_MESH_ID_LEN);
3462                 wdev->mesh_id_up_len =
3463                         nla_len(info->attrs[NL80211_ATTR_MESH_ID]);
3464                 memcpy(wdev->ssid, nla_data(info->attrs[NL80211_ATTR_MESH_ID]),
3465                        wdev->mesh_id_up_len);
3466                 wdev_unlock(wdev);
3467         }
3468
3469         if (info->attrs[NL80211_ATTR_4ADDR]) {
3470                 params.use_4addr = !!nla_get_u8(info->attrs[NL80211_ATTR_4ADDR]);
3471                 change = true;
3472                 err = nl80211_valid_4addr(rdev, dev, params.use_4addr, ntype);
3473                 if (err)
3474                         return err;
3475         } else {
3476                 params.use_4addr = -1;
3477         }
3478
3479         err = nl80211_parse_mon_options(rdev, ntype, info, &params);
3480         if (err < 0)
3481                 return err;
3482         if (err > 0)
3483                 change = true;
3484
3485         if (change)
3486                 err = cfg80211_change_iface(rdev, dev, ntype, &params);
3487         else
3488                 err = 0;
3489
3490         if (!err && params.use_4addr != -1)
3491                 dev->ieee80211_ptr->use_4addr = params.use_4addr;
3492
3493         if (change && !err) {
3494                 struct wireless_dev *wdev = dev->ieee80211_ptr;
3495
3496                 nl80211_notify_iface(rdev, wdev, NL80211_CMD_SET_INTERFACE);
3497         }
3498
3499         return err;
3500 }
3501
3502 static int nl80211_new_interface(struct sk_buff *skb, struct genl_info *info)
3503 {
3504         struct cfg80211_registered_device *rdev = info->user_ptr[0];
3505         struct vif_params params;
3506         struct wireless_dev *wdev;
3507         struct sk_buff *msg;
3508         int err;
3509         enum nl80211_iftype type = NL80211_IFTYPE_UNSPECIFIED;
3510
3511         /* to avoid failing a new interface creation due to pending removal */
3512         cfg80211_destroy_ifaces(rdev);
3513
3514         memset(&params, 0, sizeof(params));
3515
3516         if (!info->attrs[NL80211_ATTR_IFNAME])
3517                 return -EINVAL;
3518
3519         if (info->attrs[NL80211_ATTR_IFTYPE])
3520                 type = nla_get_u32(info->attrs[NL80211_ATTR_IFTYPE]);
3521
3522         if (!rdev->ops->add_virtual_intf)
3523                 return -EOPNOTSUPP;
3524
3525         if ((type == NL80211_IFTYPE_P2P_DEVICE || type == NL80211_IFTYPE_NAN ||
3526              rdev->wiphy.features & NL80211_FEATURE_MAC_ON_CREATE) &&
3527             info->attrs[NL80211_ATTR_MAC]) {
3528                 nla_memcpy(params.macaddr, info->attrs[NL80211_ATTR_MAC],
3529                            ETH_ALEN);
3530                 if (!is_valid_ether_addr(params.macaddr))
3531                         return -EADDRNOTAVAIL;
3532         }
3533
3534         if (info->attrs[NL80211_ATTR_4ADDR]) {
3535                 params.use_4addr = !!nla_get_u8(info->attrs[NL80211_ATTR_4ADDR]);
3536                 err = nl80211_valid_4addr(rdev, NULL, params.use_4addr, type);
3537                 if (err)
3538                         return err;
3539         }
3540
3541         if (!cfg80211_iftype_allowed(&rdev->wiphy, type, params.use_4addr, 0))
3542                 return -EOPNOTSUPP;
3543
3544         err = nl80211_parse_mon_options(rdev, type, info, &params);
3545         if (err < 0)
3546                 return err;
3547
3548         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
3549         if (!msg)
3550                 return -ENOMEM;
3551
3552         wdev = rdev_add_virtual_intf(rdev,
3553                                 nla_data(info->attrs[NL80211_ATTR_IFNAME]),
3554                                 NET_NAME_USER, type, &params);
3555         if (WARN_ON(!wdev)) {
3556                 nlmsg_free(msg);
3557                 return -EPROTO;
3558         } else if (IS_ERR(wdev)) {
3559                 nlmsg_free(msg);
3560                 return PTR_ERR(wdev);
3561         }
3562
3563         if (info->attrs[NL80211_ATTR_SOCKET_OWNER])
3564                 wdev->owner_nlportid = info->snd_portid;
3565
3566         switch (type) {
3567         case NL80211_IFTYPE_MESH_POINT:
3568                 if (!info->attrs[NL80211_ATTR_MESH_ID])
3569                         break;
3570                 wdev_lock(wdev);
3571                 BUILD_BUG_ON(IEEE80211_MAX_SSID_LEN !=
3572                              IEEE80211_MAX_MESH_ID_LEN);
3573                 wdev->mesh_id_up_len =
3574                         nla_len(info->attrs[NL80211_ATTR_MESH_ID]);
3575                 memcpy(wdev->ssid, nla_data(info->attrs[NL80211_ATTR_MESH_ID]),
3576                        wdev->mesh_id_up_len);
3577                 wdev_unlock(wdev);
3578                 break;
3579         case NL80211_IFTYPE_NAN:
3580         case NL80211_IFTYPE_P2P_DEVICE:
3581                 /*
3582                  * P2P Device and NAN do not have a netdev, so don't go
3583                  * through the netdev notifier and must be added here
3584                  */
3585                 cfg80211_init_wdev(rdev, wdev);
3586                 break;
3587         default:
3588                 break;
3589         }
3590
3591         if (nl80211_send_iface(msg, info->snd_portid, info->snd_seq, 0,
3592                                rdev, wdev, NL80211_CMD_NEW_INTERFACE) < 0) {
3593                 nlmsg_free(msg);
3594                 return -ENOBUFS;
3595         }
3596
3597         return genlmsg_reply(msg, info);
3598 }
3599
3600 static int nl80211_del_interface(struct sk_buff *skb, struct genl_info *info)
3601 {
3602         struct cfg80211_registered_device *rdev = info->user_ptr[0];
3603         struct wireless_dev *wdev = info->user_ptr[1];
3604
3605         if (!rdev->ops->del_virtual_intf)
3606                 return -EOPNOTSUPP;
3607
3608         /*
3609          * If we remove a wireless device without a netdev then clear
3610          * user_ptr[1] so that nl80211_post_doit won't dereference it
3611          * to check if it needs to do dev_put(). Otherwise it crashes
3612          * since the wdev has been freed, unlike with a netdev where
3613          * we need the dev_put() for the netdev to really be freed.
3614          */
3615         if (!wdev->netdev)
3616                 info->user_ptr[1] = NULL;
3617
3618         return rdev_del_virtual_intf(rdev, wdev);
3619 }
3620
3621 static int nl80211_set_noack_map(struct sk_buff *skb, struct genl_info *info)
3622 {
3623         struct cfg80211_registered_device *rdev = info->user_ptr[0];
3624         struct net_device *dev = info->user_ptr[1];
3625         u16 noack_map;
3626
3627         if (!info->attrs[NL80211_ATTR_NOACK_MAP])
3628                 return -EINVAL;
3629
3630         if (!rdev->ops->set_noack_map)
3631                 return -EOPNOTSUPP;
3632
3633         noack_map = nla_get_u16(info->attrs[NL80211_ATTR_NOACK_MAP]);
3634
3635         return rdev_set_noack_map(rdev, dev, noack_map);
3636 }
3637
3638 struct get_key_cookie {
3639         struct sk_buff *msg;
3640         int error;
3641         int idx;
3642 };
3643
3644 static void get_key_callback(void *c, struct key_params *params)
3645 {
3646         struct nlattr *key;
3647         struct get_key_cookie *cookie = c;
3648
3649         if ((params->key &&
3650              nla_put(cookie->msg, NL80211_ATTR_KEY_DATA,
3651                      params->key_len, params->key)) ||
3652             (params->seq &&
3653              nla_put(cookie->msg, NL80211_ATTR_KEY_SEQ,
3654                      params->seq_len, params->seq)) ||
3655             (params->cipher &&
3656              nla_put_u32(cookie->msg, NL80211_ATTR_KEY_CIPHER,
3657                          params->cipher)))
3658                 goto nla_put_failure;
3659
3660         key = nla_nest_start_noflag(cookie->msg, NL80211_ATTR_KEY);
3661         if (!key)
3662                 goto nla_put_failure;
3663
3664         if ((params->key &&
3665              nla_put(cookie->msg, NL80211_KEY_DATA,
3666                      params->key_len, params->key)) ||
3667             (params->seq &&
3668              nla_put(cookie->msg, NL80211_KEY_SEQ,
3669                      params->seq_len, params->seq)) ||
3670             (params->cipher &&
3671              nla_put_u32(cookie->msg, NL80211_KEY_CIPHER,
3672                          params->cipher)))
3673                 goto nla_put_failure;
3674
3675         if (nla_put_u8(cookie->msg, NL80211_KEY_IDX, cookie->idx))
3676                 goto nla_put_failure;
3677
3678         nla_nest_end(cookie->msg, key);
3679
3680         return;
3681  nla_put_failure:
3682         cookie->error = 1;
3683 }
3684
3685 static int nl80211_get_key(struct sk_buff *skb, struct genl_info *info)
3686 {
3687         struct cfg80211_registered_device *rdev = info->user_ptr[0];
3688         int err;
3689         struct net_device *dev = info->user_ptr[1];
3690         u8 key_idx = 0;
3691         const u8 *mac_addr = NULL;
3692         bool pairwise;
3693         struct get_key_cookie cookie = {
3694                 .error = 0,
3695         };
3696         void *hdr;
3697         struct sk_buff *msg;
3698
3699         if (info->attrs[NL80211_ATTR_KEY_IDX])
3700                 key_idx = nla_get_u8(info->attrs[NL80211_ATTR_KEY_IDX]);
3701
3702         if (info->attrs[NL80211_ATTR_MAC])
3703                 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
3704
3705         pairwise = !!mac_addr;
3706         if (info->attrs[NL80211_ATTR_KEY_TYPE]) {
3707                 u32 kt = nla_get_u32(info->attrs[NL80211_ATTR_KEY_TYPE]);
3708
3709                 if (kt != NL80211_KEYTYPE_GROUP &&
3710                     kt != NL80211_KEYTYPE_PAIRWISE)
3711                         return -EINVAL;
3712                 pairwise = kt == NL80211_KEYTYPE_PAIRWISE;
3713         }
3714
3715         if (!rdev->ops->get_key)
3716                 return -EOPNOTSUPP;
3717
3718         if (!pairwise && mac_addr && !(rdev->wiphy.flags & WIPHY_FLAG_IBSS_RSN))
3719                 return -ENOENT;
3720
3721         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
3722         if (!msg)
3723                 return -ENOMEM;
3724
3725         hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
3726                              NL80211_CMD_NEW_KEY);
3727         if (!hdr)
3728                 goto nla_put_failure;
3729
3730         cookie.msg = msg;
3731         cookie.idx = key_idx;
3732
3733         if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
3734             nla_put_u8(msg, NL80211_ATTR_KEY_IDX, key_idx))
3735                 goto nla_put_failure;
3736         if (mac_addr &&
3737             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, mac_addr))
3738                 goto nla_put_failure;
3739
3740         err = rdev_get_key(rdev, dev, key_idx, pairwise, mac_addr, &cookie,
3741                            get_key_callback);
3742
3743         if (err)
3744                 goto free_msg;
3745
3746         if (cookie.error)
3747                 goto nla_put_failure;
3748
3749         genlmsg_end(msg, hdr);
3750         return genlmsg_reply(msg, info);
3751
3752  nla_put_failure:
3753         err = -ENOBUFS;
3754  free_msg:
3755         nlmsg_free(msg);
3756         return err;
3757 }
3758
3759 static int nl80211_set_key(struct sk_buff *skb, struct genl_info *info)
3760 {
3761         struct cfg80211_registered_device *rdev = info->user_ptr[0];
3762         struct key_parse key;
3763         int err;
3764         struct net_device *dev = info->user_ptr[1];
3765
3766         err = nl80211_parse_key(info, &key);
3767         if (err)
3768                 return err;
3769
3770         if (key.idx < 0)
3771                 return -EINVAL;
3772
3773         /* Only support setting default key and
3774          * Extended Key ID action NL80211_KEY_SET_TX.
3775          */
3776         if (!key.def && !key.defmgmt &&
3777             !(key.p.mode == NL80211_KEY_SET_TX))
3778                 return -EINVAL;
3779
3780         wdev_lock(dev->ieee80211_ptr);
3781
3782         if (key.def) {
3783                 if (!rdev->ops->set_default_key) {
3784                         err = -EOPNOTSUPP;
3785                         goto out;
3786                 }
3787
3788                 err = nl80211_key_allowed(dev->ieee80211_ptr);
3789                 if (err)
3790                         goto out;
3791
3792                 err = rdev_set_default_key(rdev, dev, key.idx,
3793                                                  key.def_uni, key.def_multi);
3794
3795                 if (err)
3796                         goto out;
3797
3798 #ifdef CONFIG_CFG80211_WEXT
3799                 dev->ieee80211_ptr->wext.default_key = key.idx;
3800 #endif
3801         } else if (key.defmgmt) {
3802                 if (key.def_uni || !key.def_multi) {
3803                         err = -EINVAL;
3804                         goto out;
3805                 }
3806
3807                 if (!rdev->ops->set_default_mgmt_key) {
3808                         err = -EOPNOTSUPP;
3809                         goto out;
3810                 }
3811
3812                 err = nl80211_key_allowed(dev->ieee80211_ptr);
3813                 if (err)
3814                         goto out;
3815
3816                 err = rdev_set_default_mgmt_key(rdev, dev, key.idx);
3817                 if (err)
3818                         goto out;
3819
3820 #ifdef CONFIG_CFG80211_WEXT
3821                 dev->ieee80211_ptr->wext.default_mgmt_key = key.idx;
3822 #endif
3823         } else if (key.p.mode == NL80211_KEY_SET_TX &&
3824                    wiphy_ext_feature_isset(&rdev->wiphy,
3825                                            NL80211_EXT_FEATURE_EXT_KEY_ID)) {
3826                 u8 *mac_addr = NULL;
3827
3828                 if (info->attrs[NL80211_ATTR_MAC])
3829                         mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
3830
3831                 if (!mac_addr || key.idx < 0 || key.idx > 1) {
3832                         err = -EINVAL;
3833                         goto out;
3834                 }
3835
3836                 err = rdev_add_key(rdev, dev, key.idx,
3837                                    NL80211_KEYTYPE_PAIRWISE,
3838                                    mac_addr, &key.p);
3839         } else {
3840                 err = -EINVAL;
3841         }
3842  out:
3843         wdev_unlock(dev->ieee80211_ptr);
3844
3845         return err;
3846 }
3847
3848 static int nl80211_new_key(struct sk_buff *skb, struct genl_info *info)
3849 {
3850         struct cfg80211_registered_device *rdev = info->user_ptr[0];
3851         int err;
3852         struct net_device *dev = info->user_ptr[1];
3853         struct key_parse key;
3854         const u8 *mac_addr = NULL;
3855
3856         err = nl80211_parse_key(info, &key);
3857         if (err)
3858                 return err;
3859
3860         if (!key.p.key)
3861                 return -EINVAL;
3862
3863         if (info->attrs[NL80211_ATTR_MAC])
3864                 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
3865
3866         if (key.type == -1) {
3867                 if (mac_addr)
3868                         key.type = NL80211_KEYTYPE_PAIRWISE;
3869                 else
3870                         key.type = NL80211_KEYTYPE_GROUP;
3871         }
3872
3873         /* for now */
3874         if (key.type != NL80211_KEYTYPE_PAIRWISE &&
3875             key.type != NL80211_KEYTYPE_GROUP)
3876                 return -EINVAL;
3877
3878         if (!rdev->ops->add_key)
3879                 return -EOPNOTSUPP;
3880
3881         if (cfg80211_validate_key_settings(rdev, &key.p, key.idx,
3882                                            key.type == NL80211_KEYTYPE_PAIRWISE,
3883                                            mac_addr))
3884                 return -EINVAL;
3885
3886         wdev_lock(dev->ieee80211_ptr);
3887         err = nl80211_key_allowed(dev->ieee80211_ptr);
3888         if (!err)
3889                 err = rdev_add_key(rdev, dev, key.idx,
3890                                    key.type == NL80211_KEYTYPE_PAIRWISE,
3891                                     mac_addr, &key.p);
3892         wdev_unlock(dev->ieee80211_ptr);
3893
3894         return err;
3895 }
3896
3897 static int nl80211_del_key(struct sk_buff *skb, struct genl_info *info)
3898 {
3899         struct cfg80211_registered_device *rdev = info->user_ptr[0];
3900         int err;
3901         struct net_device *dev = info->user_ptr[1];
3902         u8 *mac_addr = NULL;
3903         struct key_parse key;
3904
3905         err = nl80211_parse_key(info, &key);
3906         if (err)
3907                 return err;
3908
3909         if (info->attrs[NL80211_ATTR_MAC])
3910                 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
3911
3912         if (key.type == -1) {
3913                 if (mac_addr)
3914                         key.type = NL80211_KEYTYPE_PAIRWISE;
3915                 else
3916                         key.type = NL80211_KEYTYPE_GROUP;
3917         }
3918
3919         /* for now */
3920         if (key.type != NL80211_KEYTYPE_PAIRWISE &&
3921             key.type != NL80211_KEYTYPE_GROUP)
3922                 return -EINVAL;
3923
3924         if (!rdev->ops->del_key)
3925                 return -EOPNOTSUPP;
3926
3927         wdev_lock(dev->ieee80211_ptr);
3928         err = nl80211_key_allowed(dev->ieee80211_ptr);
3929
3930         if (key.type == NL80211_KEYTYPE_GROUP && mac_addr &&
3931             !(rdev->wiphy.flags & WIPHY_FLAG_IBSS_RSN))
3932                 err = -ENOENT;
3933
3934         if (!err)
3935                 err = rdev_del_key(rdev, dev, key.idx,
3936                                    key.type == NL80211_KEYTYPE_PAIRWISE,
3937                                    mac_addr);
3938
3939 #ifdef CONFIG_CFG80211_WEXT
3940         if (!err) {
3941                 if (key.idx == dev->ieee80211_ptr->wext.default_key)
3942                         dev->ieee80211_ptr->wext.default_key = -1;
3943                 else if (key.idx == dev->ieee80211_ptr->wext.default_mgmt_key)
3944                         dev->ieee80211_ptr->wext.default_mgmt_key = -1;
3945         }
3946 #endif
3947         wdev_unlock(dev->ieee80211_ptr);
3948
3949         return err;
3950 }
3951
3952 /* This function returns an error or the number of nested attributes */
3953 static int validate_acl_mac_addrs(struct nlattr *nl_attr)
3954 {
3955         struct nlattr *attr;
3956         int n_entries = 0, tmp;
3957
3958         nla_for_each_nested(attr, nl_attr, tmp) {
3959                 if (nla_len(attr) != ETH_ALEN)
3960                         return -EINVAL;
3961
3962                 n_entries++;
3963         }
3964
3965         return n_entries;
3966 }
3967
3968 /*
3969  * This function parses ACL information and allocates memory for ACL data.
3970  * On successful return, the calling function is responsible to free the
3971  * ACL buffer returned by this function.
3972  */
3973 static struct cfg80211_acl_data *parse_acl_data(struct wiphy *wiphy,
3974                                                 struct genl_info *info)
3975 {
3976         enum nl80211_acl_policy acl_policy;
3977         struct nlattr *attr;
3978         struct cfg80211_acl_data *acl;
3979         int i = 0, n_entries, tmp;
3980
3981         if (!wiphy->max_acl_mac_addrs)
3982                 return ERR_PTR(-EOPNOTSUPP);
3983
3984         if (!info->attrs[NL80211_ATTR_ACL_POLICY])
3985                 return ERR_PTR(-EINVAL);
3986
3987         acl_policy = nla_get_u32(info->attrs[NL80211_ATTR_ACL_POLICY]);
3988         if (acl_policy != NL80211_ACL_POLICY_ACCEPT_UNLESS_LISTED &&
3989             acl_policy != NL80211_ACL_POLICY_DENY_UNLESS_LISTED)
3990                 return ERR_PTR(-EINVAL);
3991
3992         if (!info->attrs[NL80211_ATTR_MAC_ADDRS])
3993                 return ERR_PTR(-EINVAL);
3994
3995         n_entries = validate_acl_mac_addrs(info->attrs[NL80211_ATTR_MAC_ADDRS]);
3996         if (n_entries < 0)
3997                 return ERR_PTR(n_entries);
3998
3999         if (n_entries > wiphy->max_acl_mac_addrs)
4000                 return ERR_PTR(-ENOTSUPP);
4001
4002         acl = kzalloc(struct_size(acl, mac_addrs, n_entries), GFP_KERNEL);
4003         if (!acl)
4004                 return ERR_PTR(-ENOMEM);
4005
4006         nla_for_each_nested(attr, info->attrs[NL80211_ATTR_MAC_ADDRS], tmp) {
4007                 memcpy(acl->mac_addrs[i].addr, nla_data(attr), ETH_ALEN);
4008                 i++;
4009         }
4010
4011         acl->n_acl_entries = n_entries;
4012         acl->acl_policy = acl_policy;
4013
4014         return acl;
4015 }
4016
4017 static int nl80211_set_mac_acl(struct sk_buff *skb, struct genl_info *info)
4018 {
4019         struct cfg80211_registered_device *rdev = info->user_ptr[0];
4020         struct net_device *dev = info->user_ptr[1];
4021         struct cfg80211_acl_data *acl;
4022         int err;
4023
4024         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
4025             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
4026                 return -EOPNOTSUPP;
4027
4028         if (!dev->ieee80211_ptr->beacon_interval)
4029                 return -EINVAL;
4030
4031         acl = parse_acl_data(&rdev->wiphy, info);
4032         if (IS_ERR(acl))
4033                 return PTR_ERR(acl);
4034
4035         err = rdev_set_mac_acl(rdev, dev, acl);
4036
4037         kfree(acl);
4038
4039         return err;
4040 }
4041
4042 static u32 rateset_to_mask(struct ieee80211_supported_band *sband,
4043                            u8 *rates, u8 rates_len)
4044 {
4045         u8 i;
4046         u32 mask = 0;
4047
4048         for (i = 0; i < rates_len; i++) {
4049                 int rate = (rates[i] & 0x7f) * 5;
4050                 int ridx;
4051
4052                 for (ridx = 0; ridx < sband->n_bitrates; ridx++) {
4053                         struct ieee80211_rate *srate =
4054                                 &sband->bitrates[ridx];
4055                         if (rate == srate->bitrate) {
4056                                 mask |= 1 << ridx;
4057                                 break;
4058                         }
4059                 }
4060                 if (ridx == sband->n_bitrates)
4061                         return 0; /* rate not found */
4062         }
4063
4064         return mask;
4065 }
4066
4067 static bool ht_rateset_to_mask(struct ieee80211_supported_band *sband,
4068                                u8 *rates, u8 rates_len,
4069                                u8 mcs[IEEE80211_HT_MCS_MASK_LEN])
4070 {
4071         u8 i;
4072
4073         memset(mcs, 0, IEEE80211_HT_MCS_MASK_LEN);
4074
4075         for (i = 0; i < rates_len; i++) {
4076                 int ridx, rbit;
4077
4078                 ridx = rates[i] / 8;
4079                 rbit = BIT(rates[i] % 8);
4080
4081                 /* check validity */
4082                 if ((ridx < 0) || (ridx >= IEEE80211_HT_MCS_MASK_LEN))
4083                         return false;
4084
4085                 /* check availability */
4086                 ridx = array_index_nospec(ridx, IEEE80211_HT_MCS_MASK_LEN);
4087                 if (sband->ht_cap.mcs.rx_mask[ridx] & rbit)
4088                         mcs[ridx] |= rbit;
4089                 else
4090                         return false;
4091         }
4092
4093         return true;
4094 }
4095
4096 static u16 vht_mcs_map_to_mcs_mask(u8 vht_mcs_map)
4097 {
4098         u16 mcs_mask = 0;
4099
4100         switch (vht_mcs_map) {
4101         case IEEE80211_VHT_MCS_NOT_SUPPORTED:
4102                 break;
4103         case IEEE80211_VHT_MCS_SUPPORT_0_7:
4104                 mcs_mask = 0x00FF;
4105                 break;
4106         case IEEE80211_VHT_MCS_SUPPORT_0_8:
4107                 mcs_mask = 0x01FF;
4108                 break;
4109         case IEEE80211_VHT_MCS_SUPPORT_0_9:
4110                 mcs_mask = 0x03FF;
4111                 break;
4112         default:
4113                 break;
4114         }
4115
4116         return mcs_mask;
4117 }
4118
4119 static void vht_build_mcs_mask(u16 vht_mcs_map,
4120                                u16 vht_mcs_mask[NL80211_VHT_NSS_MAX])
4121 {
4122         u8 nss;
4123
4124         for (nss = 0; nss < NL80211_VHT_NSS_MAX; nss++) {
4125                 vht_mcs_mask[nss] = vht_mcs_map_to_mcs_mask(vht_mcs_map & 0x03);
4126                 vht_mcs_map >>= 2;
4127         }
4128 }
4129
4130 static bool vht_set_mcs_mask(struct ieee80211_supported_band *sband,
4131                              struct nl80211_txrate_vht *txrate,
4132                              u16 mcs[NL80211_VHT_NSS_MAX])
4133 {
4134         u16 tx_mcs_map = le16_to_cpu(sband->vht_cap.vht_mcs.tx_mcs_map);
4135         u16 tx_mcs_mask[NL80211_VHT_NSS_MAX] = {};
4136         u8 i;
4137
4138         if (!sband->vht_cap.vht_supported)
4139                 return false;
4140
4141         memset(mcs, 0, sizeof(u16) * NL80211_VHT_NSS_MAX);
4142
4143         /* Build vht_mcs_mask from VHT capabilities */
4144         vht_build_mcs_mask(tx_mcs_map, tx_mcs_mask);
4145
4146         for (i = 0; i < NL80211_VHT_NSS_MAX; i++) {
4147                 if ((tx_mcs_mask[i] & txrate->mcs[i]) == txrate->mcs[i])
4148                         mcs[i] = txrate->mcs[i];
4149                 else
4150                         return false;
4151         }
4152
4153         return true;
4154 }
4155
4156 static const struct nla_policy nl80211_txattr_policy[NL80211_TXRATE_MAX + 1] = {
4157         [NL80211_TXRATE_LEGACY] = { .type = NLA_BINARY,
4158                                     .len = NL80211_MAX_SUPP_RATES },
4159         [NL80211_TXRATE_HT] = { .type = NLA_BINARY,
4160                                 .len = NL80211_MAX_SUPP_HT_RATES },
4161         [NL80211_TXRATE_VHT] = {
4162                 .type = NLA_EXACT_LEN_WARN,
4163                 .len = sizeof(struct nl80211_txrate_vht),
4164         },
4165         [NL80211_TXRATE_GI] = { .type = NLA_U8 },
4166 };
4167
4168 static int nl80211_parse_tx_bitrate_mask(struct genl_info *info,
4169                                          struct cfg80211_bitrate_mask *mask)
4170 {
4171         struct nlattr *tb[NL80211_TXRATE_MAX + 1];
4172         struct cfg80211_registered_device *rdev = info->user_ptr[0];
4173         int rem, i;
4174         struct nlattr *tx_rates;
4175         struct ieee80211_supported_band *sband;
4176         u16 vht_tx_mcs_map;
4177
4178         memset(mask, 0, sizeof(*mask));
4179         /* Default to all rates enabled */
4180         for (i = 0; i < NUM_NL80211_BANDS; i++) {
4181                 sband = rdev->wiphy.bands[i];
4182
4183                 if (!sband)
4184                         continue;
4185
4186                 mask->control[i].legacy = (1 << sband->n_bitrates) - 1;
4187                 memcpy(mask->control[i].ht_mcs,
4188                        sband->ht_cap.mcs.rx_mask,
4189                        sizeof(mask->control[i].ht_mcs));
4190
4191                 if (!sband->vht_cap.vht_supported)
4192                         continue;
4193
4194                 vht_tx_mcs_map = le16_to_cpu(sband->vht_cap.vht_mcs.tx_mcs_map);
4195                 vht_build_mcs_mask(vht_tx_mcs_map, mask->control[i].vht_mcs);
4196         }
4197
4198         /* if no rates are given set it back to the defaults */
4199         if (!info->attrs[NL80211_ATTR_TX_RATES])
4200                 goto out;
4201
4202         /* The nested attribute uses enum nl80211_band as the index. This maps
4203          * directly to the enum nl80211_band values used in cfg80211.
4204          */
4205         BUILD_BUG_ON(NL80211_MAX_SUPP_HT_RATES > IEEE80211_HT_MCS_MASK_LEN * 8);
4206         nla_for_each_nested(tx_rates, info->attrs[NL80211_ATTR_TX_RATES], rem) {
4207                 enum nl80211_band band = nla_type(tx_rates);
4208                 int err;
4209
4210                 if (band < 0 || band >= NUM_NL80211_BANDS)
4211                         return -EINVAL;
4212                 sband = rdev->wiphy.bands[band];
4213                 if (sband == NULL)
4214                         return -EINVAL;
4215                 err = nla_parse_nested_deprecated(tb, NL80211_TXRATE_MAX,
4216                                                   tx_rates,
4217                                                   nl80211_txattr_policy,
4218                                                   info->extack);
4219                 if (err)
4220                         return err;
4221                 if (tb[NL80211_TXRATE_LEGACY]) {
4222                         mask->control[band].legacy = rateset_to_mask(
4223                                 sband,
4224                                 nla_data(tb[NL80211_TXRATE_LEGACY]),
4225                                 nla_len(tb[NL80211_TXRATE_LEGACY]));
4226                         if ((mask->control[band].legacy == 0) &&
4227                             nla_len(tb[NL80211_TXRATE_LEGACY]))
4228                                 return -EINVAL;
4229                 }
4230                 if (tb[NL80211_TXRATE_HT]) {
4231                         if (!ht_rateset_to_mask(
4232                                         sband,
4233                                         nla_data(tb[NL80211_TXRATE_HT]),
4234                                         nla_len(tb[NL80211_TXRATE_HT]),
4235                                         mask->control[band].ht_mcs))
4236                                 return -EINVAL;
4237                 }
4238                 if (tb[NL80211_TXRATE_VHT]) {
4239                         if (!vht_set_mcs_mask(
4240                                         sband,
4241                                         nla_data(tb[NL80211_TXRATE_VHT]),
4242                                         mask->control[band].vht_mcs))
4243                                 return -EINVAL;
4244                 }
4245                 if (tb[NL80211_TXRATE_GI]) {
4246                         mask->control[band].gi =
4247                                 nla_get_u8(tb[NL80211_TXRATE_GI]);
4248                         if (mask->control[band].gi > NL80211_TXRATE_FORCE_LGI)
4249                                 return -EINVAL;
4250                 }
4251
4252                 if (mask->control[band].legacy == 0) {
4253                         /* don't allow empty legacy rates if HT or VHT
4254                          * are not even supported.
4255                          */
4256                         if (!(rdev->wiphy.bands[band]->ht_cap.ht_supported ||
4257                               rdev->wiphy.bands[band]->vht_cap.vht_supported))
4258                                 return -EINVAL;
4259
4260                         for (i = 0; i < IEEE80211_HT_MCS_MASK_LEN; i++)
4261                                 if (mask->control[band].ht_mcs[i])
4262                                         goto out;
4263
4264                         for (i = 0; i < NL80211_VHT_NSS_MAX; i++)
4265                                 if (mask->control[band].vht_mcs[i])
4266                                         goto out;
4267
4268                         /* legacy and mcs rates may not be both empty */
4269                         return -EINVAL;
4270                 }
4271         }
4272
4273 out:
4274         return 0;
4275 }
4276
4277 static int validate_beacon_tx_rate(struct cfg80211_registered_device *rdev,
4278                                    enum nl80211_band band,
4279                                    struct cfg80211_bitrate_mask *beacon_rate)
4280 {
4281         u32 count_ht, count_vht, i;
4282         u32 rate = beacon_rate->control[band].legacy;
4283
4284         /* Allow only one rate */
4285         if (hweight32(rate) > 1)
4286                 return -EINVAL;
4287
4288         count_ht = 0;
4289         for (i = 0; i < IEEE80211_HT_MCS_MASK_LEN; i++) {
4290                 if (hweight8(beacon_rate->control[band].ht_mcs[i]) > 1) {
4291                         return -EINVAL;
4292                 } else if (beacon_rate->control[band].ht_mcs[i]) {
4293                         count_ht++;
4294                         if (count_ht > 1)
4295                                 return -EINVAL;
4296                 }
4297                 if (count_ht && rate)
4298                         return -EINVAL;
4299         }
4300
4301         count_vht = 0;
4302         for (i = 0; i < NL80211_VHT_NSS_MAX; i++) {
4303                 if (hweight16(beacon_rate->control[band].vht_mcs[i]) > 1) {
4304                         return -EINVAL;
4305                 } else if (beacon_rate->control[band].vht_mcs[i]) {
4306                         count_vht++;
4307                         if (count_vht > 1)
4308                                 return -EINVAL;
4309                 }
4310                 if (count_vht && rate)
4311                         return -EINVAL;
4312         }
4313
4314         if ((count_ht && count_vht) || (!rate && !count_ht && !count_vht))
4315                 return -EINVAL;
4316
4317         if (rate &&
4318             !wiphy_ext_feature_isset(&rdev->wiphy,
4319                                      NL80211_EXT_FEATURE_BEACON_RATE_LEGACY))
4320                 return -EINVAL;
4321         if (count_ht &&
4322             !wiphy_ext_feature_isset(&rdev->wiphy,
4323                                      NL80211_EXT_FEATURE_BEACON_RATE_HT))
4324                 return -EINVAL;
4325         if (count_vht &&
4326             !wiphy_ext_feature_isset(&rdev->wiphy,
4327                                      NL80211_EXT_FEATURE_BEACON_RATE_VHT))
4328                 return -EINVAL;
4329
4330         return 0;
4331 }
4332
4333 static int nl80211_parse_beacon(struct cfg80211_registered_device *rdev,
4334                                 struct nlattr *attrs[],
4335                                 struct cfg80211_beacon_data *bcn)
4336 {
4337         bool haveinfo = false;
4338         int err;
4339
4340         memset(bcn, 0, sizeof(*bcn));
4341
4342         if (attrs[NL80211_ATTR_BEACON_HEAD]) {
4343                 bcn->head = nla_data(attrs[NL80211_ATTR_BEACON_HEAD]);
4344                 bcn->head_len = nla_len(attrs[NL80211_ATTR_BEACON_HEAD]);
4345                 if (!bcn->head_len)
4346                         return -EINVAL;
4347                 haveinfo = true;
4348         }
4349
4350         if (attrs[NL80211_ATTR_BEACON_TAIL]) {
4351                 bcn->tail = nla_data(attrs[NL80211_ATTR_BEACON_TAIL]);
4352                 bcn->tail_len = nla_len(attrs[NL80211_ATTR_BEACON_TAIL]);
4353                 haveinfo = true;
4354         }
4355
4356         if (!haveinfo)
4357                 return -EINVAL;
4358
4359         if (attrs[NL80211_ATTR_IE]) {
4360                 bcn->beacon_ies = nla_data(attrs[NL80211_ATTR_IE]);
4361                 bcn->beacon_ies_len = nla_len(attrs[NL80211_ATTR_IE]);
4362         }
4363
4364         if (attrs[NL80211_ATTR_IE_PROBE_RESP]) {
4365                 bcn->proberesp_ies =
4366                         nla_data(attrs[NL80211_ATTR_IE_PROBE_RESP]);
4367                 bcn->proberesp_ies_len =
4368                         nla_len(attrs[NL80211_ATTR_IE_PROBE_RESP]);
4369         }
4370
4371         if (attrs[NL80211_ATTR_IE_ASSOC_RESP]) {
4372                 bcn->assocresp_ies =
4373                         nla_data(attrs[NL80211_ATTR_IE_ASSOC_RESP]);
4374                 bcn->assocresp_ies_len =
4375                         nla_len(attrs[NL80211_ATTR_IE_ASSOC_RESP]);
4376         }
4377
4378         if (attrs[NL80211_ATTR_PROBE_RESP]) {
4379                 bcn->probe_resp = nla_data(attrs[NL80211_ATTR_PROBE_RESP]);
4380                 bcn->probe_resp_len = nla_len(attrs[NL80211_ATTR_PROBE_RESP]);
4381         }
4382
4383         if (attrs[NL80211_ATTR_FTM_RESPONDER]) {
4384                 struct nlattr *tb[NL80211_FTM_RESP_ATTR_MAX + 1];
4385
4386                 err = nla_parse_nested_deprecated(tb,
4387                                                   NL80211_FTM_RESP_ATTR_MAX,
4388                                                   attrs[NL80211_ATTR_FTM_RESPONDER],
4389                                                   NULL, NULL);
4390                 if (err)
4391                         return err;
4392
4393                 if (tb[NL80211_FTM_RESP_ATTR_ENABLED] &&
4394                     wiphy_ext_feature_isset(&rdev->wiphy,
4395                                             NL80211_EXT_FEATURE_ENABLE_FTM_RESPONDER))
4396                         bcn->ftm_responder = 1;
4397                 else
4398                         return -EOPNOTSUPP;
4399
4400                 if (tb[NL80211_FTM_RESP_ATTR_LCI]) {
4401                         bcn->lci = nla_data(tb[NL80211_FTM_RESP_ATTR_LCI]);
4402                         bcn->lci_len = nla_len(tb[NL80211_FTM_RESP_ATTR_LCI]);
4403                 }
4404
4405                 if (tb[NL80211_FTM_RESP_ATTR_CIVICLOC]) {
4406                         bcn->civicloc = nla_data(tb[NL80211_FTM_RESP_ATTR_CIVICLOC]);
4407                         bcn->civicloc_len = nla_len(tb[NL80211_FTM_RESP_ATTR_CIVICLOC]);
4408                 }
4409         } else {
4410                 bcn->ftm_responder = -1;
4411         }
4412
4413         return 0;
4414 }
4415
4416 static int nl80211_parse_he_obss_pd(struct nlattr *attrs,
4417                                     struct ieee80211_he_obss_pd *he_obss_pd)
4418 {
4419         struct nlattr *tb[NL80211_HE_OBSS_PD_ATTR_MAX + 1];
4420         int err;
4421
4422         err = nla_parse_nested(tb, NL80211_HE_OBSS_PD_ATTR_MAX, attrs,
4423                                he_obss_pd_policy, NULL);
4424         if (err)
4425                 return err;
4426
4427         if (!tb[NL80211_HE_OBSS_PD_ATTR_MIN_OFFSET] ||
4428             !tb[NL80211_HE_OBSS_PD_ATTR_MAX_OFFSET])
4429                 return -EINVAL;
4430
4431         he_obss_pd->min_offset =
4432                 nla_get_u32(tb[NL80211_HE_OBSS_PD_ATTR_MIN_OFFSET]);
4433         he_obss_pd->max_offset =
4434                 nla_get_u32(tb[NL80211_HE_OBSS_PD_ATTR_MAX_OFFSET]);
4435
4436         if (he_obss_pd->min_offset >= he_obss_pd->max_offset)
4437                 return -EINVAL;
4438
4439         he_obss_pd->enable = true;
4440
4441         return 0;
4442 }
4443
4444 static void nl80211_check_ap_rate_selectors(struct cfg80211_ap_settings *params,
4445                                             const u8 *rates)
4446 {
4447         int i;
4448
4449         if (!rates)
4450                 return;
4451
4452         for (i = 0; i < rates[1]; i++) {
4453                 if (rates[2 + i] == BSS_MEMBERSHIP_SELECTOR_HT_PHY)
4454                         params->ht_required = true;
4455                 if (rates[2 + i] == BSS_MEMBERSHIP_SELECTOR_VHT_PHY)
4456                         params->vht_required = true;
4457         }
4458 }
4459
4460 /*
4461  * Since the nl80211 API didn't include, from the beginning, attributes about
4462  * HT/VHT requirements/capabilities, we parse them out of the IEs for the
4463  * benefit of drivers that rebuild IEs in the firmware.
4464  */
4465 static void nl80211_calculate_ap_params(struct cfg80211_ap_settings *params)
4466 {
4467         const struct cfg80211_beacon_data *bcn = &params->beacon;
4468         size_t ies_len = bcn->tail_len;
4469         const u8 *ies = bcn->tail;
4470         const u8 *rates;
4471         const u8 *cap;
4472
4473         rates = cfg80211_find_ie(WLAN_EID_SUPP_RATES, ies, ies_len);
4474         nl80211_check_ap_rate_selectors(params, rates);
4475
4476         rates = cfg80211_find_ie(WLAN_EID_EXT_SUPP_RATES, ies, ies_len);
4477         nl80211_check_ap_rate_selectors(params, rates);
4478
4479         cap = cfg80211_find_ie(WLAN_EID_HT_CAPABILITY, ies, ies_len);
4480         if (cap && cap[1] >= sizeof(*params->ht_cap))
4481                 params->ht_cap = (void *)(cap + 2);
4482         cap = cfg80211_find_ie(WLAN_EID_VHT_CAPABILITY, ies, ies_len);
4483         if (cap && cap[1] >= sizeof(*params->vht_cap))
4484                 params->vht_cap = (void *)(cap + 2);
4485         cap = cfg80211_find_ext_ie(WLAN_EID_EXT_HE_CAPABILITY, ies, ies_len);
4486         if (cap && cap[1] >= sizeof(*params->he_cap) + 1)
4487                 params->he_cap = (void *)(cap + 3);
4488 }
4489
4490 static bool nl80211_get_ap_channel(struct cfg80211_registered_device *rdev,
4491                                    struct cfg80211_ap_settings *params)
4492 {
4493         struct wireless_dev *wdev;
4494         bool ret = false;
4495
4496         list_for_each_entry(wdev, &rdev->wiphy.wdev_list, list) {
4497                 if (wdev->iftype != NL80211_IFTYPE_AP &&
4498                     wdev->iftype != NL80211_IFTYPE_P2P_GO)
4499                         continue;
4500
4501                 if (!wdev->preset_chandef.chan)
4502                         continue;
4503
4504                 params->chandef = wdev->preset_chandef;
4505                 ret = true;
4506                 break;
4507         }
4508
4509         return ret;
4510 }
4511
4512 static bool nl80211_valid_auth_type(struct cfg80211_registered_device *rdev,
4513                                     enum nl80211_auth_type auth_type,
4514                                     enum nl80211_commands cmd)
4515 {
4516         if (auth_type > NL80211_AUTHTYPE_MAX)
4517                 return false;
4518
4519         switch (cmd) {
4520         case NL80211_CMD_AUTHENTICATE:
4521                 if (!(rdev->wiphy.features & NL80211_FEATURE_SAE) &&
4522                     auth_type == NL80211_AUTHTYPE_SAE)
4523                         return false;
4524                 if (!wiphy_ext_feature_isset(&rdev->wiphy,
4525                                              NL80211_EXT_FEATURE_FILS_STA) &&
4526                     (auth_type == NL80211_AUTHTYPE_FILS_SK ||
4527                      auth_type == NL80211_AUTHTYPE_FILS_SK_PFS ||
4528                      auth_type == NL80211_AUTHTYPE_FILS_PK))
4529                         return false;
4530                 return true;
4531         case NL80211_CMD_CONNECT:
4532                 if (!(rdev->wiphy.features & NL80211_FEATURE_SAE) &&
4533                     !wiphy_ext_feature_isset(&rdev->wiphy,
4534                                              NL80211_EXT_FEATURE_SAE_OFFLOAD) &&
4535                     auth_type == NL80211_AUTHTYPE_SAE)
4536                         return false;
4537
4538                 /* FILS with SK PFS or PK not supported yet */
4539                 if (auth_type == NL80211_AUTHTYPE_FILS_SK_PFS ||
4540                     auth_type == NL80211_AUTHTYPE_FILS_PK)
4541                         return false;
4542                 if (!wiphy_ext_feature_isset(
4543                             &rdev->wiphy,
4544                             NL80211_EXT_FEATURE_FILS_SK_OFFLOAD) &&
4545                     auth_type == NL80211_AUTHTYPE_FILS_SK)
4546                         return false;
4547                 return true;
4548         case NL80211_CMD_START_AP:
4549                 /* SAE not supported yet */
4550                 if (auth_type == NL80211_AUTHTYPE_SAE)
4551                         return false;
4552                 /* FILS not supported yet */
4553                 if (auth_type == NL80211_AUTHTYPE_FILS_SK ||
4554                     auth_type == NL80211_AUTHTYPE_FILS_SK_PFS ||
4555                     auth_type == NL80211_AUTHTYPE_FILS_PK)
4556                         return false;
4557                 return true;
4558         default:
4559                 return false;
4560         }
4561 }
4562
4563 static int nl80211_start_ap(struct sk_buff *skb, struct genl_info *info)
4564 {
4565         struct cfg80211_registered_device *rdev = info->user_ptr[0];
4566         struct net_device *dev = info->user_ptr[1];
4567         struct wireless_dev *wdev = dev->ieee80211_ptr;
4568         struct cfg80211_ap_settings params;
4569         int err;
4570
4571         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
4572             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
4573                 return -EOPNOTSUPP;
4574
4575         if (!rdev->ops->start_ap)
4576                 return -EOPNOTSUPP;
4577
4578         if (wdev->beacon_interval)
4579                 return -EALREADY;
4580
4581         memset(&params, 0, sizeof(params));
4582
4583         /* these are required for START_AP */
4584         if (!info->attrs[NL80211_ATTR_BEACON_INTERVAL] ||
4585             !info->attrs[NL80211_ATTR_DTIM_PERIOD] ||
4586             !info->attrs[NL80211_ATTR_BEACON_HEAD])
4587                 return -EINVAL;
4588
4589         err = nl80211_parse_beacon(rdev, info->attrs, &params.beacon);
4590         if (err)
4591                 return err;
4592
4593         params.beacon_interval =
4594                 nla_get_u32(info->attrs[NL80211_ATTR_BEACON_INTERVAL]);
4595         params.dtim_period =
4596                 nla_get_u32(info->attrs[NL80211_ATTR_DTIM_PERIOD]);
4597
4598         err = cfg80211_validate_beacon_int(rdev, dev->ieee80211_ptr->iftype,
4599                                            params.beacon_interval);
4600         if (err)
4601                 return err;
4602
4603         /*
4604          * In theory, some of these attributes should be required here
4605          * but since they were not used when the command was originally
4606          * added, keep them optional for old user space programs to let
4607          * them continue to work with drivers that do not need the
4608          * additional information -- drivers must check!
4609          */
4610         if (info->attrs[NL80211_ATTR_SSID]) {
4611                 params.ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
4612                 params.ssid_len =
4613                         nla_len(info->attrs[NL80211_ATTR_SSID]);
4614                 if (params.ssid_len == 0 ||
4615                     params.ssid_len > IEEE80211_MAX_SSID_LEN)
4616                         return -EINVAL;
4617         }
4618
4619         if (info->attrs[NL80211_ATTR_HIDDEN_SSID])
4620                 params.hidden_ssid = nla_get_u32(
4621                         info->attrs[NL80211_ATTR_HIDDEN_SSID]);
4622
4623         params.privacy = !!info->attrs[NL80211_ATTR_PRIVACY];
4624
4625         if (info->attrs[NL80211_ATTR_AUTH_TYPE]) {
4626                 params.auth_type = nla_get_u32(
4627                         info->attrs[NL80211_ATTR_AUTH_TYPE]);
4628                 if (!nl80211_valid_auth_type(rdev, params.auth_type,
4629                                              NL80211_CMD_START_AP))
4630                         return -EINVAL;
4631         } else
4632                 params.auth_type = NL80211_AUTHTYPE_AUTOMATIC;
4633
4634         err = nl80211_crypto_settings(rdev, info, &params.crypto,
4635                                       NL80211_MAX_NR_CIPHER_SUITES);
4636         if (err)
4637                 return err;
4638
4639         if (info->attrs[NL80211_ATTR_INACTIVITY_TIMEOUT]) {
4640                 if (!(rdev->wiphy.features & NL80211_FEATURE_INACTIVITY_TIMER))
4641                         return -EOPNOTSUPP;
4642                 params.inactivity_timeout = nla_get_u16(
4643                         info->attrs[NL80211_ATTR_INACTIVITY_TIMEOUT]);
4644         }
4645
4646         if (info->attrs[NL80211_ATTR_P2P_CTWINDOW]) {
4647                 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
4648                         return -EINVAL;
4649                 params.p2p_ctwindow =
4650                         nla_get_u8(info->attrs[NL80211_ATTR_P2P_CTWINDOW]);
4651                 if (params.p2p_ctwindow != 0 &&
4652                     !(rdev->wiphy.features & NL80211_FEATURE_P2P_GO_CTWIN))
4653                         return -EINVAL;
4654         }
4655
4656         if (info->attrs[NL80211_ATTR_P2P_OPPPS]) {
4657                 u8 tmp;
4658
4659                 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
4660                         return -EINVAL;
4661                 tmp = nla_get_u8(info->attrs[NL80211_ATTR_P2P_OPPPS]);
4662                 params.p2p_opp_ps = tmp;
4663                 if (params.p2p_opp_ps != 0 &&
4664                     !(rdev->wiphy.features & NL80211_FEATURE_P2P_GO_OPPPS))
4665                         return -EINVAL;
4666         }
4667
4668         if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
4669                 err = nl80211_parse_chandef(rdev, info, &params.chandef);
4670                 if (err)
4671                         return err;
4672         } else if (wdev->preset_chandef.chan) {
4673                 params.chandef = wdev->preset_chandef;
4674         } else if (!nl80211_get_ap_channel(rdev, &params))
4675                 return -EINVAL;
4676
4677         if (!cfg80211_reg_can_beacon_relax(&rdev->wiphy, &params.chandef,
4678                                            wdev->iftype))
4679                 return -EINVAL;
4680
4681         if (info->attrs[NL80211_ATTR_TX_RATES]) {
4682                 err = nl80211_parse_tx_bitrate_mask(info, &params.beacon_rate);
4683                 if (err)
4684                         return err;
4685
4686                 err = validate_beacon_tx_rate(rdev, params.chandef.chan->band,
4687                                               &params.beacon_rate);
4688                 if (err)
4689                         return err;
4690         }
4691
4692         if (info->attrs[NL80211_ATTR_SMPS_MODE]) {
4693                 params.smps_mode =
4694                         nla_get_u8(info->attrs[NL80211_ATTR_SMPS_MODE]);
4695                 switch (params.smps_mode) {
4696                 case NL80211_SMPS_OFF:
4697                         break;
4698                 case NL80211_SMPS_STATIC:
4699                         if (!(rdev->wiphy.features &
4700                               NL80211_FEATURE_STATIC_SMPS))
4701                                 return -EINVAL;
4702                         break;
4703                 case NL80211_SMPS_DYNAMIC:
4704                         if (!(rdev->wiphy.features &
4705                               NL80211_FEATURE_DYNAMIC_SMPS))
4706                                 return -EINVAL;
4707                         break;
4708                 default:
4709                         return -EINVAL;
4710                 }
4711         } else {
4712                 params.smps_mode = NL80211_SMPS_OFF;
4713         }
4714
4715         params.pbss = nla_get_flag(info->attrs[NL80211_ATTR_PBSS]);
4716         if (params.pbss && !rdev->wiphy.bands[NL80211_BAND_60GHZ])
4717                 return -EOPNOTSUPP;
4718
4719         if (info->attrs[NL80211_ATTR_ACL_POLICY]) {
4720                 params.acl = parse_acl_data(&rdev->wiphy, info);
4721                 if (IS_ERR(params.acl))
4722                         return PTR_ERR(params.acl);
4723         }
4724
4725         params.twt_responder =
4726                     nla_get_flag(info->attrs[NL80211_ATTR_TWT_RESPONDER]);
4727
4728         if (info->attrs[NL80211_ATTR_HE_OBSS_PD]) {
4729                 err = nl80211_parse_he_obss_pd(
4730                                         info->attrs[NL80211_ATTR_HE_OBSS_PD],
4731                                         &params.he_obss_pd);
4732                 if (err)
4733                         return err;
4734         }
4735
4736         nl80211_calculate_ap_params(&params);
4737
4738         if (info->attrs[NL80211_ATTR_EXTERNAL_AUTH_SUPPORT])
4739                 params.flags |= AP_SETTINGS_EXTERNAL_AUTH_SUPPORT;
4740
4741         wdev_lock(wdev);
4742         err = rdev_start_ap(rdev, dev, &params);
4743         if (!err) {
4744                 wdev->preset_chandef = params.chandef;
4745                 wdev->beacon_interval = params.beacon_interval;
4746                 wdev->chandef = params.chandef;
4747                 wdev->ssid_len = params.ssid_len;
4748                 memcpy(wdev->ssid, params.ssid, wdev->ssid_len);
4749
4750                 if (info->attrs[NL80211_ATTR_SOCKET_OWNER])
4751                         wdev->conn_owner_nlportid = info->snd_portid;
4752         }
4753         wdev_unlock(wdev);
4754
4755         kfree(params.acl);
4756
4757         return err;
4758 }
4759
4760 static int nl80211_set_beacon(struct sk_buff *skb, struct genl_info *info)
4761 {
4762         struct cfg80211_registered_device *rdev = info->user_ptr[0];
4763         struct net_device *dev = info->user_ptr[1];
4764         struct wireless_dev *wdev = dev->ieee80211_ptr;
4765         struct cfg80211_beacon_data params;
4766         int err;
4767
4768         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
4769             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
4770                 return -EOPNOTSUPP;
4771
4772         if (!rdev->ops->change_beacon)
4773                 return -EOPNOTSUPP;
4774
4775         if (!wdev->beacon_interval)
4776                 return -EINVAL;
4777
4778         err = nl80211_parse_beacon(rdev, info->attrs, &params);
4779         if (err)
4780                 return err;
4781
4782         wdev_lock(wdev);
4783         err = rdev_change_beacon(rdev, dev, &params);
4784         wdev_unlock(wdev);
4785
4786         return err;
4787 }
4788
4789 static int nl80211_stop_ap(struct sk_buff *skb, struct genl_info *info)
4790 {
4791         struct cfg80211_registered_device *rdev = info->user_ptr[0];
4792         struct net_device *dev = info->user_ptr[1];
4793
4794         return cfg80211_stop_ap(rdev, dev, false);
4795 }
4796
4797 static const struct nla_policy sta_flags_policy[NL80211_STA_FLAG_MAX + 1] = {
4798         [NL80211_STA_FLAG_AUTHORIZED] = { .type = NLA_FLAG },
4799         [NL80211_STA_FLAG_SHORT_PREAMBLE] = { .type = NLA_FLAG },
4800         [NL80211_STA_FLAG_WME] = { .type = NLA_FLAG },
4801         [NL80211_STA_FLAG_MFP] = { .type = NLA_FLAG },
4802         [NL80211_STA_FLAG_AUTHENTICATED] = { .type = NLA_FLAG },
4803         [NL80211_STA_FLAG_TDLS_PEER] = { .type = NLA_FLAG },
4804 };
4805
4806 static int parse_station_flags(struct genl_info *info,
4807                                enum nl80211_iftype iftype,
4808                                struct station_parameters *params)
4809 {
4810         struct nlattr *flags[NL80211_STA_FLAG_MAX + 1];
4811         struct nlattr *nla;
4812         int flag;
4813
4814         /*
4815          * Try parsing the new attribute first so userspace
4816          * can specify both for older kernels.
4817          */
4818         nla = info->attrs[NL80211_ATTR_STA_FLAGS2];
4819         if (nla) {
4820                 struct nl80211_sta_flag_update *sta_flags;
4821
4822                 sta_flags = nla_data(nla);
4823                 params->sta_flags_mask = sta_flags->mask;
4824                 params->sta_flags_set = sta_flags->set;
4825                 params->sta_flags_set &= params->sta_flags_mask;
4826                 if ((params->sta_flags_mask |
4827                      params->sta_flags_set) & BIT(__NL80211_STA_FLAG_INVALID))
4828                         return -EINVAL;
4829                 return 0;
4830         }
4831
4832         /* if present, parse the old attribute */
4833
4834         nla = info->attrs[NL80211_ATTR_STA_FLAGS];
4835         if (!nla)
4836                 return 0;
4837
4838         if (nla_parse_nested_deprecated(flags, NL80211_STA_FLAG_MAX, nla, sta_flags_policy, info->extack))
4839                 return -EINVAL;
4840
4841         /*
4842          * Only allow certain flags for interface types so that
4843          * other attributes are silently ignored. Remember that
4844          * this is backward compatibility code with old userspace
4845          * and shouldn't be hit in other cases anyway.
4846          */
4847         switch (iftype) {
4848         case NL80211_IFTYPE_AP:
4849         case NL80211_IFTYPE_AP_VLAN:
4850         case NL80211_IFTYPE_P2P_GO:
4851                 params->sta_flags_mask = BIT(NL80211_STA_FLAG_AUTHORIZED) |
4852                                          BIT(NL80211_STA_FLAG_SHORT_PREAMBLE) |
4853                                          BIT(NL80211_STA_FLAG_WME) |
4854                                          BIT(NL80211_STA_FLAG_MFP);
4855                 break;
4856         case NL80211_IFTYPE_P2P_CLIENT:
4857         case NL80211_IFTYPE_STATION:
4858                 params->sta_flags_mask = BIT(NL80211_STA_FLAG_AUTHORIZED) |
4859                                          BIT(NL80211_STA_FLAG_TDLS_PEER);
4860                 break;
4861         case NL80211_IFTYPE_MESH_POINT:
4862                 params->sta_flags_mask = BIT(NL80211_STA_FLAG_AUTHENTICATED) |
4863                                          BIT(NL80211_STA_FLAG_MFP) |
4864                                          BIT(NL80211_STA_FLAG_AUTHORIZED);
4865                 break;
4866         default:
4867                 return -EINVAL;
4868         }
4869
4870         for (flag = 1; flag <= NL80211_STA_FLAG_MAX; flag++) {
4871                 if (flags[flag]) {
4872                         params->sta_flags_set |= (1<<flag);
4873
4874                         /* no longer support new API additions in old API */
4875                         if (flag > NL80211_STA_FLAG_MAX_OLD_API)
4876                                 return -EINVAL;
4877                 }
4878         }
4879
4880         return 0;
4881 }
4882
4883 bool nl80211_put_sta_rate(struct sk_buff *msg, struct rate_info *info, int attr)
4884 {
4885         struct nlattr *rate;
4886         u32 bitrate;
4887         u16 bitrate_compat;
4888         enum nl80211_rate_info rate_flg;
4889
4890         rate = nla_nest_start_noflag(msg, attr);
4891         if (!rate)
4892                 return false;
4893
4894         /* cfg80211_calculate_bitrate will return 0 for mcs >= 32 */
4895         bitrate = cfg80211_calculate_bitrate(info);
4896         /* report 16-bit bitrate only if we can */
4897         bitrate_compat = bitrate < (1UL << 16) ? bitrate : 0;
4898         if (bitrate > 0 &&
4899             nla_put_u32(msg, NL80211_RATE_INFO_BITRATE32, bitrate))
4900                 return false;
4901         if (bitrate_compat > 0 &&
4902             nla_put_u16(msg, NL80211_RATE_INFO_BITRATE, bitrate_compat))
4903                 return false;
4904
4905         switch (info->bw) {
4906         case RATE_INFO_BW_5:
4907                 rate_flg = NL80211_RATE_INFO_5_MHZ_WIDTH;
4908                 break;
4909         case RATE_INFO_BW_10:
4910                 rate_flg = NL80211_RATE_INFO_10_MHZ_WIDTH;
4911                 break;
4912         default:
4913                 WARN_ON(1);
4914                 /* fall through */
4915         case RATE_INFO_BW_20:
4916                 rate_flg = 0;
4917                 break;
4918         case RATE_INFO_BW_40:
4919                 rate_flg = NL80211_RATE_INFO_40_MHZ_WIDTH;
4920                 break;
4921         case RATE_INFO_BW_80:
4922                 rate_flg = NL80211_RATE_INFO_80_MHZ_WIDTH;
4923                 break;
4924         case RATE_INFO_BW_160:
4925                 rate_flg = NL80211_RATE_INFO_160_MHZ_WIDTH;
4926                 break;
4927         case RATE_INFO_BW_HE_RU:
4928                 rate_flg = 0;
4929                 WARN_ON(!(info->flags & RATE_INFO_FLAGS_HE_MCS));
4930         }
4931
4932         if (rate_flg && nla_put_flag(msg, rate_flg))
4933                 return false;
4934
4935         if (info->flags & RATE_INFO_FLAGS_MCS) {
4936                 if (nla_put_u8(msg, NL80211_RATE_INFO_MCS, info->mcs))
4937                         return false;
4938                 if (info->flags & RATE_INFO_FLAGS_SHORT_GI &&
4939                     nla_put_flag(msg, NL80211_RATE_INFO_SHORT_GI))
4940                         return false;
4941         } else if (info->flags & RATE_INFO_FLAGS_VHT_MCS) {
4942                 if (nla_put_u8(msg, NL80211_RATE_INFO_VHT_MCS, info->mcs))
4943                         return false;
4944                 if (nla_put_u8(msg, NL80211_RATE_INFO_VHT_NSS, info->nss))
4945                         return false;
4946                 if (info->flags & RATE_INFO_FLAGS_SHORT_GI &&
4947                     nla_put_flag(msg, NL80211_RATE_INFO_SHORT_GI))
4948                         return false;
4949         } else if (info->flags & RATE_INFO_FLAGS_HE_MCS) {
4950                 if (nla_put_u8(msg, NL80211_RATE_INFO_HE_MCS, info->mcs))
4951                         return false;
4952                 if (nla_put_u8(msg, NL80211_RATE_INFO_HE_NSS, info->nss))
4953                         return false;
4954                 if (nla_put_u8(msg, NL80211_RATE_INFO_HE_GI, info->he_gi))
4955                         return false;
4956                 if (nla_put_u8(msg, NL80211_RATE_INFO_HE_DCM, info->he_dcm))
4957                         return false;
4958                 if (info->bw == RATE_INFO_BW_HE_RU &&
4959                     nla_put_u8(msg, NL80211_RATE_INFO_HE_RU_ALLOC,
4960                                info->he_ru_alloc))
4961                         return false;
4962         }
4963
4964         nla_nest_end(msg, rate);
4965         return true;
4966 }
4967
4968 static bool nl80211_put_signal(struct sk_buff *msg, u8 mask, s8 *signal,
4969                                int id)
4970 {
4971         void *attr;
4972         int i = 0;
4973
4974         if (!mask)
4975                 return true;
4976
4977         attr = nla_nest_start_noflag(msg, id);
4978         if (!attr)
4979                 return false;
4980
4981         for (i = 0; i < IEEE80211_MAX_CHAINS; i++) {
4982                 if (!(mask & BIT(i)))
4983                         continue;
4984
4985                 if (nla_put_u8(msg, i, signal[i]))
4986                         return false;
4987         }
4988
4989         nla_nest_end(msg, attr);
4990
4991         return true;
4992 }
4993
4994 static int nl80211_send_station(struct sk_buff *msg, u32 cmd, u32 portid,
4995                                 u32 seq, int flags,
4996                                 struct cfg80211_registered_device *rdev,
4997                                 struct net_device *dev,
4998                                 const u8 *mac_addr, struct station_info *sinfo)
4999 {
5000         void *hdr;
5001         struct nlattr *sinfoattr, *bss_param;
5002
5003         hdr = nl80211hdr_put(msg, portid, seq, flags, cmd);
5004         if (!hdr) {
5005                 cfg80211_sinfo_release_content(sinfo);
5006                 return -1;
5007         }
5008
5009         if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
5010             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, mac_addr) ||
5011             nla_put_u32(msg, NL80211_ATTR_GENERATION, sinfo->generation))
5012                 goto nla_put_failure;
5013
5014         sinfoattr = nla_nest_start_noflag(msg, NL80211_ATTR_STA_INFO);
5015         if (!sinfoattr)
5016                 goto nla_put_failure;
5017
5018 #define PUT_SINFO(attr, memb, type) do {                                \
5019         BUILD_BUG_ON(sizeof(type) == sizeof(u64));                      \
5020         if (sinfo->filled & BIT_ULL(NL80211_STA_INFO_ ## attr) &&       \
5021             nla_put_ ## type(msg, NL80211_STA_INFO_ ## attr,            \
5022                              sinfo->memb))                              \
5023                 goto nla_put_failure;                                   \
5024         } while (0)
5025 #define PUT_SINFO_U64(attr, memb) do {                                  \
5026         if (sinfo->filled & BIT_ULL(NL80211_STA_INFO_ ## attr) &&       \
5027             nla_put_u64_64bit(msg, NL80211_STA_INFO_ ## attr,           \
5028                               sinfo->memb, NL80211_STA_INFO_PAD))       \
5029                 goto nla_put_failure;                                   \
5030         } while (0)
5031
5032         PUT_SINFO(CONNECTED_TIME, connected_time, u32);
5033         PUT_SINFO(INACTIVE_TIME, inactive_time, u32);
5034
5035         if (sinfo->filled & (BIT_ULL(NL80211_STA_INFO_RX_BYTES) |
5036                              BIT_ULL(NL80211_STA_INFO_RX_BYTES64)) &&
5037             nla_put_u32(msg, NL80211_STA_INFO_RX_BYTES,
5038                         (u32)sinfo->rx_bytes))
5039                 goto nla_put_failure;
5040
5041         if (sinfo->filled & (BIT_ULL(NL80211_STA_INFO_TX_BYTES) |
5042                              BIT_ULL(NL80211_STA_INFO_TX_BYTES64)) &&
5043             nla_put_u32(msg, NL80211_STA_INFO_TX_BYTES,
5044                         (u32)sinfo->tx_bytes))
5045                 goto nla_put_failure;
5046
5047         PUT_SINFO_U64(RX_BYTES64, rx_bytes);
5048         PUT_SINFO_U64(TX_BYTES64, tx_bytes);
5049         PUT_SINFO(LLID, llid, u16);
5050         PUT_SINFO(PLID, plid, u16);
5051         PUT_SINFO(PLINK_STATE, plink_state, u8);
5052         PUT_SINFO_U64(RX_DURATION, rx_duration);
5053         PUT_SINFO_U64(TX_DURATION, tx_duration);
5054
5055         if (wiphy_ext_feature_isset(&rdev->wiphy,
5056                                     NL80211_EXT_FEATURE_AIRTIME_FAIRNESS))
5057                 PUT_SINFO(AIRTIME_WEIGHT, airtime_weight, u16);
5058
5059         switch (rdev->wiphy.signal_type) {
5060         case CFG80211_SIGNAL_TYPE_MBM:
5061                 PUT_SINFO(SIGNAL, signal, u8);
5062                 PUT_SINFO(SIGNAL_AVG, signal_avg, u8);
5063                 break;
5064         default:
5065                 break;
5066         }
5067         if (sinfo->filled & BIT_ULL(NL80211_STA_INFO_CHAIN_SIGNAL)) {
5068                 if (!nl80211_put_signal(msg, sinfo->chains,
5069                                         sinfo->chain_signal,
5070                                         NL80211_STA_INFO_CHAIN_SIGNAL))
5071                         goto nla_put_failure;
5072         }
5073         if (sinfo->filled & BIT_ULL(NL80211_STA_INFO_CHAIN_SIGNAL_AVG)) {
5074                 if (!nl80211_put_signal(msg, sinfo->chains,
5075                                         sinfo->chain_signal_avg,
5076                                         NL80211_STA_INFO_CHAIN_SIGNAL_AVG))
5077                         goto nla_put_failure;
5078         }
5079         if (sinfo->filled & BIT_ULL(NL80211_STA_INFO_TX_BITRATE)) {
5080                 if (!nl80211_put_sta_rate(msg, &sinfo->txrate,
5081                                           NL80211_STA_INFO_TX_BITRATE))
5082                         goto nla_put_failure;
5083         }
5084         if (sinfo->filled & BIT_ULL(NL80211_STA_INFO_RX_BITRATE)) {
5085                 if (!nl80211_put_sta_rate(msg, &sinfo->rxrate,
5086                                           NL80211_STA_INFO_RX_BITRATE))
5087                         goto nla_put_failure;
5088         }
5089
5090         PUT_SINFO(RX_PACKETS, rx_packets, u32);
5091         PUT_SINFO(TX_PACKETS, tx_packets, u32);
5092         PUT_SINFO(TX_RETRIES, tx_retries, u32);
5093         PUT_SINFO(TX_FAILED, tx_failed, u32);
5094         PUT_SINFO(EXPECTED_THROUGHPUT, expected_throughput, u32);
5095         PUT_SINFO(AIRTIME_LINK_METRIC, airtime_link_metric, u32);
5096         PUT_SINFO(BEACON_LOSS, beacon_loss_count, u32);
5097         PUT_SINFO(LOCAL_PM, local_pm, u32);
5098         PUT_SINFO(PEER_PM, peer_pm, u32);
5099         PUT_SINFO(NONPEER_PM, nonpeer_pm, u32);
5100         PUT_SINFO(CONNECTED_TO_GATE, connected_to_gate, u8);
5101
5102         if (sinfo->filled & BIT_ULL(NL80211_STA_INFO_BSS_PARAM)) {
5103                 bss_param = nla_nest_start_noflag(msg,
5104                                                   NL80211_STA_INFO_BSS_PARAM);
5105                 if (!bss_param)
5106                         goto nla_put_failure;
5107
5108                 if (((sinfo->bss_param.flags & BSS_PARAM_FLAGS_CTS_PROT) &&
5109                      nla_put_flag(msg, NL80211_STA_BSS_PARAM_CTS_PROT)) ||
5110                     ((sinfo->bss_param.flags & BSS_PARAM_FLAGS_SHORT_PREAMBLE) &&
5111                      nla_put_flag(msg, NL80211_STA_BSS_PARAM_SHORT_PREAMBLE)) ||
5112                     ((sinfo->bss_param.flags & BSS_PARAM_FLAGS_SHORT_SLOT_TIME) &&
5113                      nla_put_flag(msg, NL80211_STA_BSS_PARAM_SHORT_SLOT_TIME)) ||
5114                     nla_put_u8(msg, NL80211_STA_BSS_PARAM_DTIM_PERIOD,
5115                                sinfo->bss_param.dtim_period) ||
5116                     nla_put_u16(msg, NL80211_STA_BSS_PARAM_BEACON_INTERVAL,
5117                                 sinfo->bss_param.beacon_interval))
5118                         goto nla_put_failure;
5119
5120                 nla_nest_end(msg, bss_param);
5121         }
5122         if ((sinfo->filled & BIT_ULL(NL80211_STA_INFO_STA_FLAGS)) &&
5123             nla_put(msg, NL80211_STA_INFO_STA_FLAGS,
5124                     sizeof(struct nl80211_sta_flag_update),
5125                     &sinfo->sta_flags))
5126                 goto nla_put_failure;
5127
5128         PUT_SINFO_U64(T_OFFSET, t_offset);
5129         PUT_SINFO_U64(RX_DROP_MISC, rx_dropped_misc);
5130         PUT_SINFO_U64(BEACON_RX, rx_beacon);
5131         PUT_SINFO(BEACON_SIGNAL_AVG, rx_beacon_signal_avg, u8);
5132         PUT_SINFO(RX_MPDUS, rx_mpdu_count, u32);
5133         PUT_SINFO(FCS_ERROR_COUNT, fcs_err_count, u32);
5134         if (wiphy_ext_feature_isset(&rdev->wiphy,
5135                                     NL80211_EXT_FEATURE_ACK_SIGNAL_SUPPORT)) {
5136                 PUT_SINFO(ACK_SIGNAL, ack_signal, u8);
5137                 PUT_SINFO(ACK_SIGNAL_AVG, avg_ack_signal, s8);
5138         }
5139
5140 #undef PUT_SINFO
5141 #undef PUT_SINFO_U64
5142
5143         if (sinfo->pertid) {
5144                 struct nlattr *tidsattr;
5145                 int tid;
5146
5147                 tidsattr = nla_nest_start_noflag(msg,
5148                                                  NL80211_STA_INFO_TID_STATS);
5149                 if (!tidsattr)
5150                         goto nla_put_failure;
5151
5152                 for (tid = 0; tid < IEEE80211_NUM_TIDS + 1; tid++) {
5153                         struct cfg80211_tid_stats *tidstats;
5154                         struct nlattr *tidattr;
5155
5156                         tidstats = &sinfo->pertid[tid];
5157
5158                         if (!tidstats->filled)
5159                                 continue;
5160
5161                         tidattr = nla_nest_start_noflag(msg, tid + 1);
5162                         if (!tidattr)
5163                                 goto nla_put_failure;
5164
5165 #define PUT_TIDVAL_U64(attr, memb) do {                                 \
5166         if (tidstats->filled & BIT(NL80211_TID_STATS_ ## attr) &&       \
5167             nla_put_u64_64bit(msg, NL80211_TID_STATS_ ## attr,          \
5168                               tidstats->memb, NL80211_TID_STATS_PAD))   \
5169                 goto nla_put_failure;                                   \
5170         } while (0)
5171
5172                         PUT_TIDVAL_U64(RX_MSDU, rx_msdu);
5173                         PUT_TIDVAL_U64(TX_MSDU, tx_msdu);
5174                         PUT_TIDVAL_U64(TX_MSDU_RETRIES, tx_msdu_retries);
5175                         PUT_TIDVAL_U64(TX_MSDU_FAILED, tx_msdu_failed);
5176
5177 #undef PUT_TIDVAL_U64
5178                         if ((tidstats->filled &
5179                              BIT(NL80211_TID_STATS_TXQ_STATS)) &&
5180                             !nl80211_put_txq_stats(msg, &tidstats->txq_stats,
5181                                                    NL80211_TID_STATS_TXQ_STATS))
5182                                 goto nla_put_failure;
5183
5184                         nla_nest_end(msg, tidattr);
5185                 }
5186
5187                 nla_nest_end(msg, tidsattr);
5188         }
5189
5190         nla_nest_end(msg, sinfoattr);
5191
5192         if (sinfo->assoc_req_ies_len &&
5193             nla_put(msg, NL80211_ATTR_IE, sinfo->assoc_req_ies_len,
5194                     sinfo->assoc_req_ies))
5195                 goto nla_put_failure;
5196
5197         cfg80211_sinfo_release_content(sinfo);
5198         genlmsg_end(msg, hdr);
5199         return 0;
5200
5201  nla_put_failure:
5202         cfg80211_sinfo_release_content(sinfo);
5203         genlmsg_cancel(msg, hdr);
5204         return -EMSGSIZE;
5205 }
5206
5207 static int nl80211_dump_station(struct sk_buff *skb,
5208                                 struct netlink_callback *cb)
5209 {
5210         struct station_info sinfo;
5211         struct cfg80211_registered_device *rdev;
5212         struct wireless_dev *wdev;
5213         u8 mac_addr[ETH_ALEN];
5214         int sta_idx = cb->args[2];
5215         int err;
5216
5217         rtnl_lock();
5218         err = nl80211_prepare_wdev_dump(cb, &rdev, &wdev);
5219         if (err)
5220                 goto out_err;
5221
5222         if (!wdev->netdev) {
5223                 err = -EINVAL;
5224                 goto out_err;
5225         }
5226
5227         if (!rdev->ops->dump_station) {
5228                 err = -EOPNOTSUPP;
5229                 goto out_err;
5230         }
5231
5232         while (1) {
5233                 memset(&sinfo, 0, sizeof(sinfo));
5234                 err = rdev_dump_station(rdev, wdev->netdev, sta_idx,
5235                                         mac_addr, &sinfo);
5236                 if (err == -ENOENT)
5237                         break;
5238                 if (err)
5239                         goto out_err;
5240
5241                 if (nl80211_send_station(skb, NL80211_CMD_NEW_STATION,
5242                                 NETLINK_CB(cb->skb).portid,
5243                                 cb->nlh->nlmsg_seq, NLM_F_MULTI,
5244                                 rdev, wdev->netdev, mac_addr,
5245                                 &sinfo) < 0)
5246                         goto out;
5247
5248                 sta_idx++;
5249         }
5250
5251  out:
5252         cb->args[2] = sta_idx;
5253         err = skb->len;
5254  out_err:
5255         rtnl_unlock();
5256
5257         return err;
5258 }
5259
5260 static int nl80211_get_station(struct sk_buff *skb, struct genl_info *info)
5261 {
5262         struct cfg80211_registered_device *rdev = info->user_ptr[0];
5263         struct net_device *dev = info->user_ptr[1];
5264         struct station_info sinfo;
5265         struct sk_buff *msg;
5266         u8 *mac_addr = NULL;
5267         int err;
5268
5269         memset(&sinfo, 0, sizeof(sinfo));
5270
5271         if (!info->attrs[NL80211_ATTR_MAC])
5272                 return -EINVAL;
5273
5274         mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
5275
5276         if (!rdev->ops->get_station)
5277                 return -EOPNOTSUPP;
5278
5279         err = rdev_get_station(rdev, dev, mac_addr, &sinfo);
5280         if (err)
5281                 return err;
5282
5283         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
5284         if (!msg) {
5285                 cfg80211_sinfo_release_content(&sinfo);
5286                 return -ENOMEM;
5287         }
5288
5289         if (nl80211_send_station(msg, NL80211_CMD_NEW_STATION,
5290                                  info->snd_portid, info->snd_seq, 0,
5291                                  rdev, dev, mac_addr, &sinfo) < 0) {
5292                 nlmsg_free(msg);
5293                 return -ENOBUFS;
5294         }
5295
5296         return genlmsg_reply(msg, info);
5297 }
5298
5299 int cfg80211_check_station_change(struct wiphy *wiphy,
5300                                   struct station_parameters *params,
5301                                   enum cfg80211_station_type statype)
5302 {
5303         if (params->listen_interval != -1 &&
5304             statype != CFG80211_STA_AP_CLIENT_UNASSOC)
5305                 return -EINVAL;
5306
5307         if (params->support_p2p_ps != -1 &&
5308             statype != CFG80211_STA_AP_CLIENT_UNASSOC)
5309                 return -EINVAL;
5310
5311         if (params->aid &&
5312             !(params->sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)) &&
5313             statype != CFG80211_STA_AP_CLIENT_UNASSOC)
5314                 return -EINVAL;
5315
5316         /* When you run into this, adjust the code below for the new flag */
5317         BUILD_BUG_ON(NL80211_STA_FLAG_MAX != 7);
5318
5319         switch (statype) {
5320         case CFG80211_STA_MESH_PEER_KERNEL:
5321         case CFG80211_STA_MESH_PEER_USER:
5322                 /*
5323                  * No ignoring the TDLS flag here -- the userspace mesh
5324                  * code doesn't have the bug of including TDLS in the
5325                  * mask everywhere.
5326                  */
5327                 if (params->sta_flags_mask &
5328                                 ~(BIT(NL80211_STA_FLAG_AUTHENTICATED) |
5329                                   BIT(NL80211_STA_FLAG_MFP) |
5330                                   BIT(NL80211_STA_FLAG_AUTHORIZED)))
5331                         return -EINVAL;
5332                 break;
5333         case CFG80211_STA_TDLS_PEER_SETUP:
5334         case CFG80211_STA_TDLS_PEER_ACTIVE:
5335                 if (!(params->sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)))
5336                         return -EINVAL;
5337                 /* ignore since it can't change */
5338                 params->sta_flags_mask &= ~BIT(NL80211_STA_FLAG_TDLS_PEER);
5339                 break;
5340         default:
5341                 /* disallow mesh-specific things */
5342                 if (params->plink_action != NL80211_PLINK_ACTION_NO_ACTION)
5343                         return -EINVAL;
5344                 if (params->local_pm)
5345                         return -EINVAL;
5346                 if (params->sta_modify_mask & STATION_PARAM_APPLY_PLINK_STATE)
5347                         return -EINVAL;
5348         }
5349
5350         if (statype != CFG80211_STA_TDLS_PEER_SETUP &&
5351             statype != CFG80211_STA_TDLS_PEER_ACTIVE) {
5352                 /* TDLS can't be set, ... */
5353                 if (params->sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER))
5354                         return -EINVAL;
5355                 /*
5356                  * ... but don't bother the driver with it. This works around
5357                  * a hostapd/wpa_supplicant issue -- it always includes the
5358                  * TLDS_PEER flag in the mask even for AP mode.
5359                  */
5360                 params->sta_flags_mask &= ~BIT(NL80211_STA_FLAG_TDLS_PEER);
5361         }
5362
5363         if (statype != CFG80211_STA_TDLS_PEER_SETUP &&
5364             statype != CFG80211_STA_AP_CLIENT_UNASSOC) {
5365                 /* reject other things that can't change */
5366                 if (params->sta_modify_mask & STATION_PARAM_APPLY_UAPSD)
5367                         return -EINVAL;
5368                 if (params->sta_modify_mask & STATION_PARAM_APPLY_CAPABILITY)
5369                         return -EINVAL;
5370                 if (params->supported_rates)
5371                         return -EINVAL;
5372                 if (params->ext_capab || params->ht_capa || params->vht_capa ||
5373                     params->he_capa)
5374                         return -EINVAL;
5375         }
5376
5377         if (statype != CFG80211_STA_AP_CLIENT &&
5378             statype != CFG80211_STA_AP_CLIENT_UNASSOC) {
5379                 if (params->vlan)
5380                         return -EINVAL;
5381         }
5382
5383         switch (statype) {
5384         case CFG80211_STA_AP_MLME_CLIENT:
5385                 /* Use this only for authorizing/unauthorizing a station */
5386                 if (!(params->sta_flags_mask & BIT(NL80211_STA_FLAG_AUTHORIZED)))
5387                         return -EOPNOTSUPP;
5388                 break;
5389         case CFG80211_STA_AP_CLIENT:
5390         case CFG80211_STA_AP_CLIENT_UNASSOC:
5391                 /* accept only the listed bits */
5392                 if (params->sta_flags_mask &
5393                                 ~(BIT(NL80211_STA_FLAG_AUTHORIZED) |
5394                                   BIT(NL80211_STA_FLAG_AUTHENTICATED) |
5395                                   BIT(NL80211_STA_FLAG_ASSOCIATED) |
5396                                   BIT(NL80211_STA_FLAG_SHORT_PREAMBLE) |
5397                                   BIT(NL80211_STA_FLAG_WME) |
5398                                   BIT(NL80211_STA_FLAG_MFP)))
5399                         return -EINVAL;
5400
5401                 /* but authenticated/associated only if driver handles it */
5402                 if (!(wiphy->features & NL80211_FEATURE_FULL_AP_CLIENT_STATE) &&
5403                     params->sta_flags_mask &
5404                                 (BIT(NL80211_STA_FLAG_AUTHENTICATED) |
5405                                  BIT(NL80211_STA_FLAG_ASSOCIATED)))
5406                         return -EINVAL;
5407                 break;
5408         case CFG80211_STA_IBSS:
5409         case CFG80211_STA_AP_STA:
5410                 /* reject any changes other than AUTHORIZED */
5411                 if (params->sta_flags_mask & ~BIT(NL80211_STA_FLAG_AUTHORIZED))
5412                         return -EINVAL;
5413                 break;
5414         case CFG80211_STA_TDLS_PEER_SETUP:
5415                 /* reject any changes other than AUTHORIZED or WME */
5416                 if (params->sta_flags_mask & ~(BIT(NL80211_STA_FLAG_AUTHORIZED) |
5417                                                BIT(NL80211_STA_FLAG_WME)))
5418                         return -EINVAL;
5419                 /* force (at least) rates when authorizing */
5420                 if (params->sta_flags_set & BIT(NL80211_STA_FLAG_AUTHORIZED) &&
5421                     !params->supported_rates)
5422                         return -EINVAL;
5423                 break;
5424         case CFG80211_STA_TDLS_PEER_ACTIVE:
5425                 /* reject any changes */
5426                 return -EINVAL;
5427         case CFG80211_STA_MESH_PEER_KERNEL:
5428                 if (params->sta_modify_mask & STATION_PARAM_APPLY_PLINK_STATE)
5429                         return -EINVAL;
5430                 break;
5431         case CFG80211_STA_MESH_PEER_USER:
5432                 if (params->plink_action != NL80211_PLINK_ACTION_NO_ACTION &&
5433                     params->plink_action != NL80211_PLINK_ACTION_BLOCK)
5434                         return -EINVAL;
5435                 break;
5436         }
5437
5438         /*
5439          * Older kernel versions ignored this attribute entirely, so don't
5440          * reject attempts to update it but mark it as unused instead so the
5441          * driver won't look at the data.
5442          */
5443         if (statype != CFG80211_STA_AP_CLIENT_UNASSOC &&
5444             statype != CFG80211_STA_TDLS_PEER_SETUP)
5445                 params->opmode_notif_used = false;
5446
5447         return 0;
5448 }
5449 EXPORT_SYMBOL(cfg80211_check_station_change);
5450
5451 /*
5452  * Get vlan interface making sure it is running and on the right wiphy.
5453  */
5454 static struct net_device *get_vlan(struct genl_info *info,
5455                                    struct cfg80211_registered_device *rdev)
5456 {
5457         struct nlattr *vlanattr = info->attrs[NL80211_ATTR_STA_VLAN];
5458         struct net_device *v;
5459         int ret;
5460
5461         if (!vlanattr)
5462                 return NULL;
5463
5464         v = dev_get_by_index(genl_info_net(info), nla_get_u32(vlanattr));
5465         if (!v)
5466                 return ERR_PTR(-ENODEV);
5467
5468         if (!v->ieee80211_ptr || v->ieee80211_ptr->wiphy != &rdev->wiphy) {
5469                 ret = -EINVAL;
5470                 goto error;
5471         }
5472
5473         if (v->ieee80211_ptr->iftype != NL80211_IFTYPE_AP_VLAN &&
5474             v->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
5475             v->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO) {
5476                 ret = -EINVAL;
5477                 goto error;
5478         }
5479
5480         if (!netif_running(v)) {
5481                 ret = -ENETDOWN;
5482                 goto error;
5483         }
5484
5485         return v;
5486  error:
5487         dev_put(v);
5488         return ERR_PTR(ret);
5489 }
5490
5491 static const struct nla_policy
5492 nl80211_sta_wme_policy[NL80211_STA_WME_MAX + 1] = {
5493         [NL80211_STA_WME_UAPSD_QUEUES] = { .type = NLA_U8 },
5494         [NL80211_STA_WME_MAX_SP] = { .type = NLA_U8 },
5495 };
5496
5497 static int nl80211_parse_sta_wme(struct genl_info *info,
5498                                  struct station_parameters *params)
5499 {
5500         struct nlattr *tb[NL80211_STA_WME_MAX + 1];
5501         struct nlattr *nla;
5502         int err;
5503
5504         /* parse WME attributes if present */
5505         if (!info->attrs[NL80211_ATTR_STA_WME])
5506                 return 0;
5507
5508         nla = info->attrs[NL80211_ATTR_STA_WME];
5509         err = nla_parse_nested_deprecated(tb, NL80211_STA_WME_MAX, nla,
5510                                           nl80211_sta_wme_policy,
5511                                           info->extack);
5512         if (err)
5513                 return err;
5514
5515         if (tb[NL80211_STA_WME_UAPSD_QUEUES])
5516                 params->uapsd_queues = nla_get_u8(
5517                         tb[NL80211_STA_WME_UAPSD_QUEUES]);
5518         if (params->uapsd_queues & ~IEEE80211_WMM_IE_STA_QOSINFO_AC_MASK)
5519                 return -EINVAL;
5520
5521         if (tb[NL80211_STA_WME_MAX_SP])
5522                 params->max_sp = nla_get_u8(tb[NL80211_STA_WME_MAX_SP]);
5523
5524         if (params->max_sp & ~IEEE80211_WMM_IE_STA_QOSINFO_SP_MASK)
5525                 return -EINVAL;
5526
5527         params->sta_modify_mask |= STATION_PARAM_APPLY_UAPSD;
5528
5529         return 0;
5530 }
5531
5532 static int nl80211_parse_sta_channel_info(struct genl_info *info,
5533                                       struct station_parameters *params)
5534 {
5535         if (info->attrs[NL80211_ATTR_STA_SUPPORTED_CHANNELS]) {
5536                 params->supported_channels =
5537                      nla_data(info->attrs[NL80211_ATTR_STA_SUPPORTED_CHANNELS]);
5538                 params->supported_channels_len =
5539                      nla_len(info->attrs[NL80211_ATTR_STA_SUPPORTED_CHANNELS]);
5540                 /*
5541                  * Need to include at least one (first channel, number of
5542                  * channels) tuple for each subband, and must have proper
5543                  * tuples for the rest of the data as well.
5544                  */
5545                 if (params->supported_channels_len < 2)
5546                         return -EINVAL;
5547                 if (params->supported_channels_len % 2)
5548                         return -EINVAL;
5549         }
5550
5551         if (info->attrs[NL80211_ATTR_STA_SUPPORTED_OPER_CLASSES]) {
5552                 params->supported_oper_classes =
5553                  nla_data(info->attrs[NL80211_ATTR_STA_SUPPORTED_OPER_CLASSES]);
5554                 params->supported_oper_classes_len =
5555                   nla_len(info->attrs[NL80211_ATTR_STA_SUPPORTED_OPER_CLASSES]);
5556                 /*
5557                  * The value of the Length field of the Supported Operating
5558                  * Classes element is between 2 and 253.
5559                  */
5560                 if (params->supported_oper_classes_len < 2 ||
5561                     params->supported_oper_classes_len > 253)
5562                         return -EINVAL;
5563         }
5564         return 0;
5565 }
5566
5567 static int nl80211_set_station_tdls(struct genl_info *info,
5568                                     struct station_parameters *params)
5569 {
5570         int err;
5571         /* Dummy STA entry gets updated once the peer capabilities are known */
5572         if (info->attrs[NL80211_ATTR_PEER_AID])
5573                 params->aid = nla_get_u16(info->attrs[NL80211_ATTR_PEER_AID]);
5574         if (info->attrs[NL80211_ATTR_HT_CAPABILITY])
5575                 params->ht_capa =
5576                         nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]);
5577         if (info->attrs[NL80211_ATTR_VHT_CAPABILITY])
5578                 params->vht_capa =
5579                         nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY]);
5580         if (info->attrs[NL80211_ATTR_HE_CAPABILITY]) {
5581                 params->he_capa =
5582                         nla_data(info->attrs[NL80211_ATTR_HE_CAPABILITY]);
5583                 params->he_capa_len =
5584                         nla_len(info->attrs[NL80211_ATTR_HE_CAPABILITY]);
5585
5586                 if (params->he_capa_len < NL80211_HE_MIN_CAPABILITY_LEN)
5587                         return -EINVAL;
5588         }
5589
5590         err = nl80211_parse_sta_channel_info(info, params);
5591         if (err)
5592                 return err;
5593
5594         return nl80211_parse_sta_wme(info, params);
5595 }
5596
5597 static int nl80211_parse_sta_txpower_setting(struct genl_info *info,
5598                                              struct station_parameters *params)
5599 {
5600         struct cfg80211_registered_device *rdev = info->user_ptr[0];
5601         int idx;
5602
5603         if (info->attrs[NL80211_ATTR_STA_TX_POWER_SETTING]) {
5604                 if (!rdev->ops->set_tx_power ||
5605                     !wiphy_ext_feature_isset(&rdev->wiphy,
5606                                          NL80211_EXT_FEATURE_STA_TX_PWR))
5607                         return -EOPNOTSUPP;
5608
5609                 idx = NL80211_ATTR_STA_TX_POWER_SETTING;
5610                 params->txpwr.type = nla_get_u8(info->attrs[idx]);
5611
5612                 if (params->txpwr.type == NL80211_TX_POWER_LIMITED) {
5613                         idx = NL80211_ATTR_STA_TX_POWER;
5614
5615                         if (info->attrs[idx])
5616                                 params->txpwr.power =
5617                                         nla_get_s16(info->attrs[idx]);
5618                         else
5619                                 return -EINVAL;
5620                 }
5621                 params->sta_modify_mask |= STATION_PARAM_APPLY_STA_TXPOWER;
5622         }
5623
5624         return 0;
5625 }
5626
5627 static int nl80211_set_station(struct sk_buff *skb, struct genl_info *info)
5628 {
5629         struct cfg80211_registered_device *rdev = info->user_ptr[0];
5630         struct net_device *dev = info->user_ptr[1];
5631         struct station_parameters params;
5632         u8 *mac_addr;
5633         int err;
5634
5635         memset(&params, 0, sizeof(params));
5636
5637         if (!rdev->ops->change_station)
5638                 return -EOPNOTSUPP;
5639
5640         /*
5641          * AID and listen_interval properties can be set only for unassociated
5642          * station. Include these parameters here and will check them in
5643          * cfg80211_check_station_change().
5644          */
5645         if (info->attrs[NL80211_ATTR_STA_AID])
5646                 params.aid = nla_get_u16(info->attrs[NL80211_ATTR_STA_AID]);
5647
5648         if (info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL])
5649                 params.listen_interval =
5650                      nla_get_u16(info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL]);
5651         else
5652                 params.listen_interval = -1;
5653
5654         if (info->attrs[NL80211_ATTR_STA_SUPPORT_P2P_PS])
5655                 params.support_p2p_ps =
5656                         nla_get_u8(info->attrs[NL80211_ATTR_STA_SUPPORT_P2P_PS]);
5657         else
5658                 params.support_p2p_ps = -1;
5659
5660         if (!info->attrs[NL80211_ATTR_MAC])
5661                 return -EINVAL;
5662
5663         mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
5664
5665         if (info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]) {
5666                 params.supported_rates =
5667                         nla_data(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
5668                 params.supported_rates_len =
5669                         nla_len(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
5670         }
5671
5672         if (info->attrs[NL80211_ATTR_STA_CAPABILITY]) {
5673                 params.capability =
5674                         nla_get_u16(info->attrs[NL80211_ATTR_STA_CAPABILITY]);
5675                 params.sta_modify_mask |= STATION_PARAM_APPLY_CAPABILITY;
5676         }
5677
5678         if (info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]) {
5679                 params.ext_capab =
5680                         nla_data(info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]);
5681                 params.ext_capab_len =
5682                         nla_len(info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]);
5683         }
5684
5685         if (parse_station_flags(info, dev->ieee80211_ptr->iftype, &params))
5686                 return -EINVAL;
5687
5688         if (info->attrs[NL80211_ATTR_STA_PLINK_ACTION])
5689                 params.plink_action =
5690                         nla_get_u8(info->attrs[NL80211_ATTR_STA_PLINK_ACTION]);
5691
5692         if (info->attrs[NL80211_ATTR_STA_PLINK_STATE]) {
5693                 params.plink_state =
5694                         nla_get_u8(info->attrs[NL80211_ATTR_STA_PLINK_STATE]);
5695                 if (info->attrs[NL80211_ATTR_MESH_PEER_AID])
5696                         params.peer_aid = nla_get_u16(
5697                                 info->attrs[NL80211_ATTR_MESH_PEER_AID]);
5698                 params.sta_modify_mask |= STATION_PARAM_APPLY_PLINK_STATE;
5699         }
5700
5701         if (info->attrs[NL80211_ATTR_LOCAL_MESH_POWER_MODE])
5702                 params.local_pm = nla_get_u32(
5703                         info->attrs[NL80211_ATTR_LOCAL_MESH_POWER_MODE]);
5704
5705         if (info->attrs[NL80211_ATTR_OPMODE_NOTIF]) {
5706                 params.opmode_notif_used = true;
5707                 params.opmode_notif =
5708                         nla_get_u8(info->attrs[NL80211_ATTR_OPMODE_NOTIF]);
5709         }
5710
5711         if (info->attrs[NL80211_ATTR_AIRTIME_WEIGHT])
5712                 params.airtime_weight =
5713                         nla_get_u16(info->attrs[NL80211_ATTR_AIRTIME_WEIGHT]);
5714
5715         if (params.airtime_weight &&
5716             !wiphy_ext_feature_isset(&rdev->wiphy,
5717                                      NL80211_EXT_FEATURE_AIRTIME_FAIRNESS))
5718                 return -EOPNOTSUPP;
5719
5720         err = nl80211_parse_sta_txpower_setting(info, &params);
5721         if (err)
5722                 return err;
5723
5724         /* Include parameters for TDLS peer (will check later) */
5725         err = nl80211_set_station_tdls(info, &params);
5726         if (err)
5727                 return err;
5728
5729         params.vlan = get_vlan(info, rdev);
5730         if (IS_ERR(params.vlan))
5731                 return PTR_ERR(params.vlan);
5732
5733         switch (dev->ieee80211_ptr->iftype) {
5734         case NL80211_IFTYPE_AP:
5735         case NL80211_IFTYPE_AP_VLAN:
5736         case NL80211_IFTYPE_P2P_GO:
5737         case NL80211_IFTYPE_P2P_CLIENT:
5738         case NL80211_IFTYPE_STATION:
5739         case NL80211_IFTYPE_ADHOC:
5740         case NL80211_IFTYPE_MESH_POINT:
5741                 break;
5742         default:
5743                 err = -EOPNOTSUPP;
5744                 goto out_put_vlan;
5745         }
5746
5747         /* driver will call cfg80211_check_station_change() */
5748         err = rdev_change_station(rdev, dev, mac_addr, &params);
5749
5750  out_put_vlan:
5751         if (params.vlan)
5752                 dev_put(params.vlan);
5753
5754         return err;
5755 }
5756
5757 static int nl80211_new_station(struct sk_buff *skb, struct genl_info *info)
5758 {
5759         struct cfg80211_registered_device *rdev = info->user_ptr[0];
5760         int err;
5761         struct net_device *dev = info->user_ptr[1];
5762         struct station_parameters params;
5763         u8 *mac_addr = NULL;
5764         u32 auth_assoc = BIT(NL80211_STA_FLAG_AUTHENTICATED) |
5765                          BIT(NL80211_STA_FLAG_ASSOCIATED);
5766
5767         memset(&params, 0, sizeof(params));
5768
5769         if (!rdev->ops->add_station)
5770                 return -EOPNOTSUPP;
5771
5772         if (!info->attrs[NL80211_ATTR_MAC])
5773                 return -EINVAL;
5774
5775         if (!info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL])
5776                 return -EINVAL;
5777
5778         if (!info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES])
5779                 return -EINVAL;
5780
5781         if (!info->attrs[NL80211_ATTR_STA_AID] &&
5782             !info->attrs[NL80211_ATTR_PEER_AID])
5783                 return -EINVAL;
5784
5785         mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
5786         params.supported_rates =
5787                 nla_data(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
5788         params.supported_rates_len =
5789                 nla_len(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
5790         params.listen_interval =
5791                 nla_get_u16(info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL]);
5792
5793         if (info->attrs[NL80211_ATTR_STA_SUPPORT_P2P_PS]) {
5794                 params.support_p2p_ps =
5795                         nla_get_u8(info->attrs[NL80211_ATTR_STA_SUPPORT_P2P_PS]);
5796         } else {
5797                 /*
5798                  * if not specified, assume it's supported for P2P GO interface,
5799                  * and is NOT supported for AP interface
5800                  */
5801                 params.support_p2p_ps =
5802                         dev->ieee80211_ptr->iftype == NL80211_IFTYPE_P2P_GO;
5803         }
5804
5805         if (info->attrs[NL80211_ATTR_PEER_AID])
5806                 params.aid = nla_get_u16(info->attrs[NL80211_ATTR_PEER_AID]);
5807         else
5808                 params.aid = nla_get_u16(info->attrs[NL80211_ATTR_STA_AID]);
5809
5810         if (info->attrs[NL80211_ATTR_STA_CAPABILITY]) {
5811                 params.capability =
5812                         nla_get_u16(info->attrs[NL80211_ATTR_STA_CAPABILITY]);
5813                 params.sta_modify_mask |= STATION_PARAM_APPLY_CAPABILITY;
5814         }
5815
5816         if (info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]) {
5817                 params.ext_capab =
5818                         nla_data(info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]);
5819                 params.ext_capab_len =
5820                         nla_len(info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]);
5821         }
5822
5823         if (info->attrs[NL80211_ATTR_HT_CAPABILITY])
5824                 params.ht_capa =
5825                         nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]);
5826
5827         if (info->attrs[NL80211_ATTR_VHT_CAPABILITY])
5828                 params.vht_capa =
5829                         nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY]);
5830
5831         if (info->attrs[NL80211_ATTR_HE_CAPABILITY]) {
5832                 params.he_capa =
5833                         nla_data(info->attrs[NL80211_ATTR_HE_CAPABILITY]);
5834                 params.he_capa_len =
5835                         nla_len(info->attrs[NL80211_ATTR_HE_CAPABILITY]);
5836
5837                 /* max len is validated in nla policy */
5838                 if (params.he_capa_len < NL80211_HE_MIN_CAPABILITY_LEN)
5839                         return -EINVAL;
5840         }
5841
5842         if (info->attrs[NL80211_ATTR_OPMODE_NOTIF]) {
5843                 params.opmode_notif_used = true;
5844                 params.opmode_notif =
5845                         nla_get_u8(info->attrs[NL80211_ATTR_OPMODE_NOTIF]);
5846         }
5847
5848         if (info->attrs[NL80211_ATTR_STA_PLINK_ACTION])
5849                 params.plink_action =
5850                         nla_get_u8(info->attrs[NL80211_ATTR_STA_PLINK_ACTION]);
5851
5852         if (info->attrs[NL80211_ATTR_AIRTIME_WEIGHT])
5853                 params.airtime_weight =
5854                         nla_get_u16(info->attrs[NL80211_ATTR_AIRTIME_WEIGHT]);
5855
5856         if (params.airtime_weight &&
5857             !wiphy_ext_feature_isset(&rdev->wiphy,
5858                                      NL80211_EXT_FEATURE_AIRTIME_FAIRNESS))
5859                 return -EOPNOTSUPP;
5860
5861         err = nl80211_parse_sta_txpower_setting(info, &params);
5862         if (err)
5863                 return err;
5864
5865         err = nl80211_parse_sta_channel_info(info, &params);
5866         if (err)
5867                 return err;
5868
5869         err = nl80211_parse_sta_wme(info, &params);
5870         if (err)
5871                 return err;
5872
5873         if (parse_station_flags(info, dev->ieee80211_ptr->iftype, &params))
5874                 return -EINVAL;
5875
5876         /* HT/VHT requires QoS, but if we don't have that just ignore HT/VHT
5877          * as userspace might just pass through the capabilities from the IEs
5878          * directly, rather than enforcing this restriction and returning an
5879          * error in this case.
5880          */
5881         if (!(params.sta_flags_set & BIT(NL80211_STA_FLAG_WME))) {
5882                 params.ht_capa = NULL;
5883                 params.vht_capa = NULL;
5884
5885                 /* HE requires WME */
5886                 if (params.he_capa_len)
5887                         return -EINVAL;
5888         }
5889
5890         /* When you run into this, adjust the code below for the new flag */
5891         BUILD_BUG_ON(NL80211_STA_FLAG_MAX != 7);
5892
5893         switch (dev->ieee80211_ptr->iftype) {
5894         case NL80211_IFTYPE_AP:
5895         case NL80211_IFTYPE_AP_VLAN:
5896         case NL80211_IFTYPE_P2P_GO:
5897                 /* ignore WME attributes if iface/sta is not capable */
5898                 if (!(rdev->wiphy.flags & WIPHY_FLAG_AP_UAPSD) ||
5899                     !(params.sta_flags_set & BIT(NL80211_STA_FLAG_WME)))
5900                         params.sta_modify_mask &= ~STATION_PARAM_APPLY_UAPSD;
5901
5902                 /* TDLS peers cannot be added */
5903                 if ((params.sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)) ||
5904                     info->attrs[NL80211_ATTR_PEER_AID])
5905                         return -EINVAL;
5906                 /* but don't bother the driver with it */
5907                 params.sta_flags_mask &= ~BIT(NL80211_STA_FLAG_TDLS_PEER);
5908
5909                 /* allow authenticated/associated only if driver handles it */
5910                 if (!(rdev->wiphy.features &
5911                                 NL80211_FEATURE_FULL_AP_CLIENT_STATE) &&
5912                     params.sta_flags_mask & auth_assoc)
5913                         return -EINVAL;
5914
5915                 /* Older userspace, or userspace wanting to be compatible with
5916                  * !NL80211_FEATURE_FULL_AP_CLIENT_STATE, will not set the auth
5917                  * and assoc flags in the mask, but assumes the station will be
5918                  * added as associated anyway since this was the required driver
5919                  * behaviour before NL80211_FEATURE_FULL_AP_CLIENT_STATE was
5920                  * introduced.
5921                  * In order to not bother drivers with this quirk in the API
5922                  * set the flags in both the mask and set for new stations in
5923                  * this case.
5924                  */
5925                 if (!(params.sta_flags_mask & auth_assoc)) {
5926                         params.sta_flags_mask |= auth_assoc;
5927                         params.sta_flags_set |= auth_assoc;
5928                 }
5929
5930                 /* must be last in here for error handling */
5931                 params.vlan = get_vlan(info, rdev);
5932                 if (IS_ERR(params.vlan))
5933                         return PTR_ERR(params.vlan);
5934                 break;
5935         case NL80211_IFTYPE_MESH_POINT:
5936                 /* ignore uAPSD data */
5937                 params.sta_modify_mask &= ~STATION_PARAM_APPLY_UAPSD;
5938
5939                 /* associated is disallowed */
5940                 if (params.sta_flags_mask & BIT(NL80211_STA_FLAG_ASSOCIATED))
5941                         return -EINVAL;
5942                 /* TDLS peers cannot be added */
5943                 if ((params.sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)) ||
5944                     info->attrs[NL80211_ATTR_PEER_AID])
5945                         return -EINVAL;
5946                 break;
5947         case NL80211_IFTYPE_STATION:
5948         case NL80211_IFTYPE_P2P_CLIENT:
5949                 /* ignore uAPSD data */
5950                 params.sta_modify_mask &= ~STATION_PARAM_APPLY_UAPSD;
5951
5952                 /* these are disallowed */
5953                 if (params.sta_flags_mask &
5954                                 (BIT(NL80211_STA_FLAG_ASSOCIATED) |
5955                                  BIT(NL80211_STA_FLAG_AUTHENTICATED)))
5956                         return -EINVAL;
5957                 /* Only TDLS peers can be added */
5958                 if (!(params.sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)))
5959                         return -EINVAL;
5960                 /* Can only add if TDLS ... */
5961                 if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS))
5962                         return -EOPNOTSUPP;
5963                 /* ... with external setup is supported */
5964                 if (!(rdev->wiphy.flags & WIPHY_FLAG_TDLS_EXTERNAL_SETUP))
5965                         return -EOPNOTSUPP;
5966                 /*
5967                  * Older wpa_supplicant versions always mark the TDLS peer
5968                  * as authorized, but it shouldn't yet be.
5969                  */
5970                 params.sta_flags_mask &= ~BIT(NL80211_STA_FLAG_AUTHORIZED);
5971                 break;
5972         default:
5973                 return -EOPNOTSUPP;
5974         }
5975
5976         /* be aware of params.vlan when changing code here */
5977
5978         err = rdev_add_station(rdev, dev, mac_addr, &params);
5979
5980         if (params.vlan)
5981                 dev_put(params.vlan);
5982         return err;
5983 }
5984
5985 static int nl80211_del_station(struct sk_buff *skb, struct genl_info *info)
5986 {
5987         struct cfg80211_registered_device *rdev = info->user_ptr[0];
5988         struct net_device *dev = info->user_ptr[1];
5989         struct station_del_parameters params;
5990
5991         memset(&params, 0, sizeof(params));
5992
5993         if (info->attrs[NL80211_ATTR_MAC])
5994                 params.mac = nla_data(info->attrs[NL80211_ATTR_MAC]);
5995
5996         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
5997             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP_VLAN &&
5998             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT &&
5999             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
6000                 return -EINVAL;
6001
6002         if (!rdev->ops->del_station)
6003                 return -EOPNOTSUPP;
6004
6005         if (info->attrs[NL80211_ATTR_MGMT_SUBTYPE]) {
6006                 params.subtype =
6007                         nla_get_u8(info->attrs[NL80211_ATTR_MGMT_SUBTYPE]);
6008                 if (params.subtype != IEEE80211_STYPE_DISASSOC >> 4 &&
6009                     params.subtype != IEEE80211_STYPE_DEAUTH >> 4)
6010                         return -EINVAL;
6011         } else {
6012                 /* Default to Deauthentication frame */
6013                 params.subtype = IEEE80211_STYPE_DEAUTH >> 4;
6014         }
6015
6016         if (info->attrs[NL80211_ATTR_REASON_CODE]) {
6017                 params.reason_code =
6018                         nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]);
6019                 if (params.reason_code == 0)
6020                         return -EINVAL; /* 0 is reserved */
6021         } else {
6022                 /* Default to reason code 2 */
6023                 params.reason_code = WLAN_REASON_PREV_AUTH_NOT_VALID;
6024         }
6025
6026         return rdev_del_station(rdev, dev, &params);
6027 }
6028
6029 static int nl80211_send_mpath(struct sk_buff *msg, u32 portid, u32 seq,
6030                                 int flags, struct net_device *dev,
6031                                 u8 *dst, u8 *next_hop,
6032                                 struct mpath_info *pinfo)
6033 {
6034         void *hdr;
6035         struct nlattr *pinfoattr;
6036
6037         hdr = nl80211hdr_put(msg, portid, seq, flags, NL80211_CMD_NEW_MPATH);
6038         if (!hdr)
6039                 return -1;
6040
6041         if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
6042             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, dst) ||
6043             nla_put(msg, NL80211_ATTR_MPATH_NEXT_HOP, ETH_ALEN, next_hop) ||
6044             nla_put_u32(msg, NL80211_ATTR_GENERATION, pinfo->generation))
6045                 goto nla_put_failure;
6046
6047         pinfoattr = nla_nest_start_noflag(msg, NL80211_ATTR_MPATH_INFO);
6048         if (!pinfoattr)
6049                 goto nla_put_failure;
6050         if ((pinfo->filled & MPATH_INFO_FRAME_QLEN) &&
6051             nla_put_u32(msg, NL80211_MPATH_INFO_FRAME_QLEN,
6052                         pinfo->frame_qlen))
6053                 goto nla_put_failure;
6054         if (((pinfo->filled & MPATH_INFO_SN) &&
6055              nla_put_u32(msg, NL80211_MPATH_INFO_SN, pinfo->sn)) ||
6056             ((pinfo->filled & MPATH_INFO_METRIC) &&
6057              nla_put_u32(msg, NL80211_MPATH_INFO_METRIC,
6058                          pinfo->metric)) ||
6059             ((pinfo->filled & MPATH_INFO_EXPTIME) &&
6060              nla_put_u32(msg, NL80211_MPATH_INFO_EXPTIME,
6061                          pinfo->exptime)) ||
6062             ((pinfo->filled & MPATH_INFO_FLAGS) &&
6063              nla_put_u8(msg, NL80211_MPATH_INFO_FLAGS,
6064                         pinfo->flags)) ||
6065             ((pinfo->filled & MPATH_INFO_DISCOVERY_TIMEOUT) &&
6066              nla_put_u32(msg, NL80211_MPATH_INFO_DISCOVERY_TIMEOUT,
6067                          pinfo->discovery_timeout)) ||
6068             ((pinfo->filled & MPATH_INFO_DISCOVERY_RETRIES) &&
6069              nla_put_u8(msg, NL80211_MPATH_INFO_DISCOVERY_RETRIES,
6070                         pinfo->discovery_retries)) ||
6071             ((pinfo->filled & MPATH_INFO_HOP_COUNT) &&
6072              nla_put_u8(msg, NL80211_MPATH_INFO_HOP_COUNT,
6073                         pinfo->hop_count)) ||
6074             ((pinfo->filled & MPATH_INFO_PATH_CHANGE) &&
6075              nla_put_u32(msg, NL80211_MPATH_INFO_PATH_CHANGE,
6076                          pinfo->path_change_count)))
6077                 goto nla_put_failure;
6078
6079         nla_nest_end(msg, pinfoattr);
6080
6081         genlmsg_end(msg, hdr);
6082         return 0;
6083
6084  nla_put_failure:
6085         genlmsg_cancel(msg, hdr);
6086         return -EMSGSIZE;
6087 }
6088
6089 static int nl80211_dump_mpath(struct sk_buff *skb,
6090                               struct netlink_callback *cb)
6091 {
6092         struct mpath_info pinfo;
6093         struct cfg80211_registered_device *rdev;
6094         struct wireless_dev *wdev;
6095         u8 dst[ETH_ALEN];
6096         u8 next_hop[ETH_ALEN];
6097         int path_idx = cb->args[2];
6098         int err;
6099
6100         rtnl_lock();
6101         err = nl80211_prepare_wdev_dump(cb, &rdev, &wdev);
6102         if (err)
6103                 goto out_err;
6104
6105         if (!rdev->ops->dump_mpath) {
6106                 err = -EOPNOTSUPP;
6107                 goto out_err;
6108         }
6109
6110         if (wdev->iftype != NL80211_IFTYPE_MESH_POINT) {
6111                 err = -EOPNOTSUPP;
6112                 goto out_err;
6113         }
6114
6115         while (1) {
6116                 err = rdev_dump_mpath(rdev, wdev->netdev, path_idx, dst,
6117                                       next_hop, &pinfo);
6118                 if (err == -ENOENT)
6119                         break;
6120                 if (err)
6121                         goto out_err;
6122
6123                 if (nl80211_send_mpath(skb, NETLINK_CB(cb->skb).portid,
6124                                        cb->nlh->nlmsg_seq, NLM_F_MULTI,
6125                                        wdev->netdev, dst, next_hop,
6126                                        &pinfo) < 0)
6127                         goto out;
6128
6129                 path_idx++;
6130         }
6131
6132  out:
6133         cb->args[2] = path_idx;
6134         err = skb->len;
6135  out_err:
6136         rtnl_unlock();
6137         return err;
6138 }
6139
6140 static int nl80211_get_mpath(struct sk_buff *skb, struct genl_info *info)
6141 {
6142         struct cfg80211_registered_device *rdev = info->user_ptr[0];
6143         int err;
6144         struct net_device *dev = info->user_ptr[1];
6145         struct mpath_info pinfo;
6146         struct sk_buff *msg;
6147         u8 *dst = NULL;
6148         u8 next_hop[ETH_ALEN];
6149
6150         memset(&pinfo, 0, sizeof(pinfo));
6151
6152         if (!info->attrs[NL80211_ATTR_MAC])
6153                 return -EINVAL;
6154
6155         dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
6156
6157         if (!rdev->ops->get_mpath)
6158                 return -EOPNOTSUPP;
6159
6160         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT)
6161                 return -EOPNOTSUPP;
6162
6163         err = rdev_get_mpath(rdev, dev, dst, next_hop, &pinfo);
6164         if (err)
6165                 return err;
6166
6167         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
6168         if (!msg)
6169                 return -ENOMEM;
6170
6171         if (nl80211_send_mpath(msg, info->snd_portid, info->snd_seq, 0,
6172                                  dev, dst, next_hop, &pinfo) < 0) {
6173                 nlmsg_free(msg);
6174                 return -ENOBUFS;
6175         }
6176
6177         return genlmsg_reply(msg, info);
6178 }
6179
6180 static int nl80211_set_mpath(struct sk_buff *skb, struct genl_info *info)
6181 {
6182         struct cfg80211_registered_device *rdev = info->user_ptr[0];
6183         struct net_device *dev = info->user_ptr[1];
6184         u8 *dst = NULL;
6185         u8 *next_hop = NULL;
6186
6187         if (!info->attrs[NL80211_ATTR_MAC])
6188                 return -EINVAL;
6189
6190         if (!info->attrs[NL80211_ATTR_MPATH_NEXT_HOP])
6191                 return -EINVAL;
6192
6193         dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
6194         next_hop = nla_data(info->attrs[NL80211_ATTR_MPATH_NEXT_HOP]);
6195
6196         if (!rdev->ops->change_mpath)
6197                 return -EOPNOTSUPP;
6198
6199         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT)
6200                 return -EOPNOTSUPP;
6201
6202         return rdev_change_mpath(rdev, dev, dst, next_hop);
6203 }
6204
6205 static int nl80211_new_mpath(struct sk_buff *skb, struct genl_info *info)
6206 {
6207         struct cfg80211_registered_device *rdev = info->user_ptr[0];
6208         struct net_device *dev = info->user_ptr[1];
6209         u8 *dst = NULL;
6210         u8 *next_hop = NULL;
6211
6212         if (!info->attrs[NL80211_ATTR_MAC])
6213                 return -EINVAL;
6214
6215         if (!info->attrs[NL80211_ATTR_MPATH_NEXT_HOP])
6216                 return -EINVAL;
6217
6218         dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
6219         next_hop = nla_data(info->attrs[NL80211_ATTR_MPATH_NEXT_HOP]);
6220
6221         if (!rdev->ops->add_mpath)
6222                 return -EOPNOTSUPP;
6223
6224         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT)
6225                 return -EOPNOTSUPP;
6226
6227         return rdev_add_mpath(rdev, dev, dst, next_hop);
6228 }
6229
6230 static int nl80211_del_mpath(struct sk_buff *skb, struct genl_info *info)
6231 {
6232         struct cfg80211_registered_device *rdev = info->user_ptr[0];
6233         struct net_device *dev = info->user_ptr[1];
6234         u8 *dst = NULL;
6235
6236         if (info->attrs[NL80211_ATTR_MAC])
6237                 dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
6238
6239         if (!rdev->ops->del_mpath)
6240                 return -EOPNOTSUPP;
6241
6242         return rdev_del_mpath(rdev, dev, dst);
6243 }
6244
6245 static int nl80211_get_mpp(struct sk_buff *skb, struct genl_info *info)
6246 {
6247         struct cfg80211_registered_device *rdev = info->user_ptr[0];
6248         int err;
6249         struct net_device *dev = info->user_ptr[1];
6250         struct mpath_info pinfo;
6251         struct sk_buff *msg;
6252         u8 *dst = NULL;
6253         u8 mpp[ETH_ALEN];
6254
6255         memset(&pinfo, 0, sizeof(pinfo));
6256
6257         if (!info->attrs[NL80211_ATTR_MAC])
6258                 return -EINVAL;
6259
6260         dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
6261
6262         if (!rdev->ops->get_mpp)
6263                 return -EOPNOTSUPP;
6264
6265         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT)
6266                 return -EOPNOTSUPP;
6267
6268         err = rdev_get_mpp(rdev, dev, dst, mpp, &pinfo);
6269         if (err)
6270                 return err;
6271
6272         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
6273         if (!msg)
6274                 return -ENOMEM;
6275
6276         if (nl80211_send_mpath(msg, info->snd_portid, info->snd_seq, 0,
6277                                dev, dst, mpp, &pinfo) < 0) {
6278                 nlmsg_free(msg);
6279                 return -ENOBUFS;
6280         }
6281
6282         return genlmsg_reply(msg, info);
6283 }
6284
6285 static int nl80211_dump_mpp(struct sk_buff *skb,
6286                             struct netlink_callback *cb)
6287 {
6288         struct mpath_info pinfo;
6289         struct cfg80211_registered_device *rdev;
6290         struct wireless_dev *wdev;
6291         u8 dst[ETH_ALEN];
6292         u8 mpp[ETH_ALEN];
6293         int path_idx = cb->args[2];
6294         int err;
6295
6296         rtnl_lock();
6297         err = nl80211_prepare_wdev_dump(cb, &rdev, &wdev);
6298         if (err)
6299                 goto out_err;
6300
6301         if (!rdev->ops->dump_mpp) {
6302                 err = -EOPNOTSUPP;
6303                 goto out_err;
6304         }
6305
6306         if (wdev->iftype != NL80211_IFTYPE_MESH_POINT) {
6307                 err = -EOPNOTSUPP;
6308                 goto out_err;
6309         }
6310
6311         while (1) {
6312                 err = rdev_dump_mpp(rdev, wdev->netdev, path_idx, dst,
6313                                     mpp, &pinfo);
6314                 if (err == -ENOENT)
6315                         break;
6316                 if (err)
6317                         goto out_err;
6318
6319                 if (nl80211_send_mpath(skb, NETLINK_CB(cb->skb).portid,
6320                                        cb->nlh->nlmsg_seq, NLM_F_MULTI,
6321                                        wdev->netdev, dst, mpp,
6322                                        &pinfo) < 0)
6323                         goto out;
6324
6325                 path_idx++;
6326         }
6327
6328  out:
6329         cb->args[2] = path_idx;
6330         err = skb->len;
6331  out_err:
6332         rtnl_unlock();
6333         return err;
6334 }
6335
6336 static int nl80211_set_bss(struct sk_buff *skb, struct genl_info *info)
6337 {
6338         struct cfg80211_registered_device *rdev = info->user_ptr[0];
6339         struct net_device *dev = info->user_ptr[1];
6340         struct wireless_dev *wdev = dev->ieee80211_ptr;
6341         struct bss_parameters params;
6342         int err;
6343
6344         memset(&params, 0, sizeof(params));
6345         /* default to not changing parameters */
6346         params.use_cts_prot = -1;
6347         params.use_short_preamble = -1;
6348         params.use_short_slot_time = -1;
6349         params.ap_isolate = -1;
6350         params.ht_opmode = -1;
6351         params.p2p_ctwindow = -1;
6352         params.p2p_opp_ps = -1;
6353
6354         if (info->attrs[NL80211_ATTR_BSS_CTS_PROT])
6355                 params.use_cts_prot =
6356                     nla_get_u8(info->attrs[NL80211_ATTR_BSS_CTS_PROT]);
6357         if (info->attrs[NL80211_ATTR_BSS_SHORT_PREAMBLE])
6358                 params.use_short_preamble =
6359                     nla_get_u8(info->attrs[NL80211_ATTR_BSS_SHORT_PREAMBLE]);
6360         if (info->attrs[NL80211_ATTR_BSS_SHORT_SLOT_TIME])
6361                 params.use_short_slot_time =
6362                     nla_get_u8(info->attrs[NL80211_ATTR_BSS_SHORT_SLOT_TIME]);
6363         if (info->attrs[NL80211_ATTR_BSS_BASIC_RATES]) {
6364                 params.basic_rates =
6365                         nla_data(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
6366                 params.basic_rates_len =
6367                         nla_len(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
6368         }
6369         if (info->attrs[NL80211_ATTR_AP_ISOLATE])
6370                 params.ap_isolate = !!nla_get_u8(info->attrs[NL80211_ATTR_AP_ISOLATE]);
6371         if (info->attrs[NL80211_ATTR_BSS_HT_OPMODE])
6372                 params.ht_opmode =
6373                         nla_get_u16(info->attrs[NL80211_ATTR_BSS_HT_OPMODE]);
6374
6375         if (info->attrs[NL80211_ATTR_P2P_CTWINDOW]) {
6376                 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
6377                         return -EINVAL;
6378                 params.p2p_ctwindow =
6379                         nla_get_u8(info->attrs[NL80211_ATTR_P2P_CTWINDOW]);
6380                 if (params.p2p_ctwindow != 0 &&
6381                     !(rdev->wiphy.features & NL80211_FEATURE_P2P_GO_CTWIN))
6382                         return -EINVAL;
6383         }
6384
6385         if (info->attrs[NL80211_ATTR_P2P_OPPPS]) {
6386                 u8 tmp;
6387
6388                 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
6389                         return -EINVAL;
6390                 tmp = nla_get_u8(info->attrs[NL80211_ATTR_P2P_OPPPS]);
6391                 params.p2p_opp_ps = tmp;
6392                 if (params.p2p_opp_ps &&
6393                     !(rdev->wiphy.features & NL80211_FEATURE_P2P_GO_OPPPS))
6394                         return -EINVAL;
6395         }
6396
6397         if (!rdev->ops->change_bss)
6398                 return -EOPNOTSUPP;
6399
6400         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
6401             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
6402                 return -EOPNOTSUPP;
6403
6404         wdev_lock(wdev);
6405         err = rdev_change_bss(rdev, dev, &params);
6406         wdev_unlock(wdev);
6407
6408         return err;
6409 }
6410
6411 static int nl80211_req_set_reg(struct sk_buff *skb, struct genl_info *info)
6412 {
6413         char *data = NULL;
6414         bool is_indoor;
6415         enum nl80211_user_reg_hint_type user_reg_hint_type;
6416         u32 owner_nlportid;
6417
6418         /*
6419          * You should only get this when cfg80211 hasn't yet initialized
6420          * completely when built-in to the kernel right between the time
6421          * window between nl80211_init() and regulatory_init(), if that is
6422          * even possible.
6423          */
6424         if (unlikely(!rcu_access_pointer(cfg80211_regdomain)))
6425                 return -EINPROGRESS;
6426
6427         if (info->attrs[NL80211_ATTR_USER_REG_HINT_TYPE])
6428                 user_reg_hint_type =
6429                   nla_get_u32(info->attrs[NL80211_ATTR_USER_REG_HINT_TYPE]);
6430         else
6431                 user_reg_hint_type = NL80211_USER_REG_HINT_USER;
6432
6433         switch (user_reg_hint_type) {
6434         case NL80211_USER_REG_HINT_USER:
6435         case NL80211_USER_REG_HINT_CELL_BASE:
6436                 if (!info->attrs[NL80211_ATTR_REG_ALPHA2])
6437                         return -EINVAL;
6438
6439                 data = nla_data(info->attrs[NL80211_ATTR_REG_ALPHA2]);
6440                 return regulatory_hint_user(data, user_reg_hint_type);
6441         case NL80211_USER_REG_HINT_INDOOR:
6442                 if (info->attrs[NL80211_ATTR_SOCKET_OWNER]) {
6443                         owner_nlportid = info->snd_portid;
6444                         is_indoor = !!info->attrs[NL80211_ATTR_REG_INDOOR];
6445                 } else {
6446                         owner_nlportid = 0;
6447                         is_indoor = true;
6448                 }
6449
6450                 return regulatory_hint_indoor(is_indoor, owner_nlportid);
6451         default:
6452                 return -EINVAL;
6453         }
6454 }
6455
6456 static int nl80211_reload_regdb(struct sk_buff *skb, struct genl_info *info)
6457 {
6458         return reg_reload_regdb();
6459 }
6460
6461 static int nl80211_get_mesh_config(struct sk_buff *skb,
6462                                    struct genl_info *info)
6463 {
6464         struct cfg80211_registered_device *rdev = info->user_ptr[0];
6465         struct net_device *dev = info->user_ptr[1];
6466         struct wireless_dev *wdev = dev->ieee80211_ptr;
6467         struct mesh_config cur_params;
6468         int err = 0;
6469         void *hdr;
6470         struct nlattr *pinfoattr;
6471         struct sk_buff *msg;
6472
6473         if (wdev->iftype != NL80211_IFTYPE_MESH_POINT)
6474                 return -EOPNOTSUPP;
6475
6476         if (!rdev->ops->get_mesh_config)
6477                 return -EOPNOTSUPP;
6478
6479         wdev_lock(wdev);
6480         /* If not connected, get default parameters */
6481         if (!wdev->mesh_id_len)
6482                 memcpy(&cur_params, &default_mesh_config, sizeof(cur_params));
6483         else
6484                 err = rdev_get_mesh_config(rdev, dev, &cur_params);
6485         wdev_unlock(wdev);
6486
6487         if (err)
6488                 return err;
6489
6490         /* Draw up a netlink message to send back */
6491         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
6492         if (!msg)
6493                 return -ENOMEM;
6494         hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
6495                              NL80211_CMD_GET_MESH_CONFIG);
6496         if (!hdr)
6497                 goto out;
6498         pinfoattr = nla_nest_start_noflag(msg, NL80211_ATTR_MESH_CONFIG);
6499         if (!pinfoattr)
6500                 goto nla_put_failure;
6501         if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
6502             nla_put_u16(msg, NL80211_MESHCONF_RETRY_TIMEOUT,
6503                         cur_params.dot11MeshRetryTimeout) ||
6504             nla_put_u16(msg, NL80211_MESHCONF_CONFIRM_TIMEOUT,
6505                         cur_params.dot11MeshConfirmTimeout) ||
6506             nla_put_u16(msg, NL80211_MESHCONF_HOLDING_TIMEOUT,
6507                         cur_params.dot11MeshHoldingTimeout) ||
6508             nla_put_u16(msg, NL80211_MESHCONF_MAX_PEER_LINKS,
6509                         cur_params.dot11MeshMaxPeerLinks) ||
6510             nla_put_u8(msg, NL80211_MESHCONF_MAX_RETRIES,
6511                        cur_params.dot11MeshMaxRetries) ||
6512             nla_put_u8(msg, NL80211_MESHCONF_TTL,
6513                        cur_params.dot11MeshTTL) ||
6514             nla_put_u8(msg, NL80211_MESHCONF_ELEMENT_TTL,
6515                        cur_params.element_ttl) ||
6516             nla_put_u8(msg, NL80211_MESHCONF_AUTO_OPEN_PLINKS,
6517                        cur_params.auto_open_plinks) ||
6518             nla_put_u32(msg, NL80211_MESHCONF_SYNC_OFFSET_MAX_NEIGHBOR,
6519                         cur_params.dot11MeshNbrOffsetMaxNeighbor) ||
6520             nla_put_u8(msg, NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES,
6521                        cur_params.dot11MeshHWMPmaxPREQretries) ||
6522             nla_put_u32(msg, NL80211_MESHCONF_PATH_REFRESH_TIME,
6523                         cur_params.path_refresh_time) ||
6524             nla_put_u16(msg, NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT,
6525                         cur_params.min_discovery_timeout) ||
6526             nla_put_u32(msg, NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT,
6527                         cur_params.dot11MeshHWMPactivePathTimeout) ||
6528             nla_put_u16(msg, NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL,
6529                         cur_params.dot11MeshHWMPpreqMinInterval) ||
6530             nla_put_u16(msg, NL80211_MESHCONF_HWMP_PERR_MIN_INTERVAL,
6531                         cur_params.dot11MeshHWMPperrMinInterval) ||
6532             nla_put_u16(msg, NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME,
6533                         cur_params.dot11MeshHWMPnetDiameterTraversalTime) ||
6534             nla_put_u8(msg, NL80211_MESHCONF_HWMP_ROOTMODE,
6535                        cur_params.dot11MeshHWMPRootMode) ||
6536             nla_put_u16(msg, NL80211_MESHCONF_HWMP_RANN_INTERVAL,
6537                         cur_params.dot11MeshHWMPRannInterval) ||
6538             nla_put_u8(msg, NL80211_MESHCONF_GATE_ANNOUNCEMENTS,
6539                        cur_params.dot11MeshGateAnnouncementProtocol) ||
6540             nla_put_u8(msg, NL80211_MESHCONF_FORWARDING,
6541                        cur_params.dot11MeshForwarding) ||
6542             nla_put_s32(msg, NL80211_MESHCONF_RSSI_THRESHOLD,
6543                         cur_params.rssi_threshold) ||
6544             nla_put_u32(msg, NL80211_MESHCONF_HT_OPMODE,
6545                         cur_params.ht_opmode) ||
6546             nla_put_u32(msg, NL80211_MESHCONF_HWMP_PATH_TO_ROOT_TIMEOUT,
6547                         cur_params.dot11MeshHWMPactivePathToRootTimeout) ||
6548             nla_put_u16(msg, NL80211_MESHCONF_HWMP_ROOT_INTERVAL,
6549                         cur_params.dot11MeshHWMProotInterval) ||
6550             nla_put_u16(msg, NL80211_MESHCONF_HWMP_CONFIRMATION_INTERVAL,
6551                         cur_params.dot11MeshHWMPconfirmationInterval) ||
6552             nla_put_u32(msg, NL80211_MESHCONF_POWER_MODE,
6553                         cur_params.power_mode) ||
6554             nla_put_u16(msg, NL80211_MESHCONF_AWAKE_WINDOW,
6555                         cur_params.dot11MeshAwakeWindowDuration) ||
6556             nla_put_u32(msg, NL80211_MESHCONF_PLINK_TIMEOUT,
6557                         cur_params.plink_timeout) ||
6558             nla_put_u8(msg, NL80211_MESHCONF_CONNECTED_TO_GATE,
6559                        cur_params.dot11MeshConnectedToMeshGate))
6560                 goto nla_put_failure;
6561         nla_nest_end(msg, pinfoattr);
6562         genlmsg_end(msg, hdr);
6563         return genlmsg_reply(msg, info);
6564
6565  nla_put_failure:
6566  out:
6567         nlmsg_free(msg);
6568         return -ENOBUFS;
6569 }
6570
6571 static const struct nla_policy
6572 nl80211_meshconf_params_policy[NL80211_MESHCONF_ATTR_MAX+1] = {
6573         [NL80211_MESHCONF_RETRY_TIMEOUT] =
6574                 NLA_POLICY_RANGE(NLA_U16, 1, 255),
6575         [NL80211_MESHCONF_CONFIRM_TIMEOUT] =
6576                 NLA_POLICY_RANGE(NLA_U16, 1, 255),
6577         [NL80211_MESHCONF_HOLDING_TIMEOUT] =
6578                 NLA_POLICY_RANGE(NLA_U16, 1, 255),
6579         [NL80211_MESHCONF_MAX_PEER_LINKS] =
6580                 NLA_POLICY_RANGE(NLA_U16, 0, 255),
6581         [NL80211_MESHCONF_MAX_RETRIES] = NLA_POLICY_MAX(NLA_U8, 16),
6582         [NL80211_MESHCONF_TTL] = NLA_POLICY_MIN(NLA_U8, 1),
6583         [NL80211_MESHCONF_ELEMENT_TTL] = NLA_POLICY_MIN(NLA_U8, 1),
6584         [NL80211_MESHCONF_AUTO_OPEN_PLINKS] = NLA_POLICY_MAX(NLA_U8, 1),
6585         [NL80211_MESHCONF_SYNC_OFFSET_MAX_NEIGHBOR] =
6586                 NLA_POLICY_RANGE(NLA_U32, 1, 255),
6587         [NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES] = { .type = NLA_U8 },
6588         [NL80211_MESHCONF_PATH_REFRESH_TIME] = { .type = NLA_U32 },
6589         [NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT] = NLA_POLICY_MIN(NLA_U16, 1),
6590         [NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT] = { .type = NLA_U32 },
6591         [NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL] =
6592                 NLA_POLICY_MIN(NLA_U16, 1),
6593         [NL80211_MESHCONF_HWMP_PERR_MIN_INTERVAL] =
6594                 NLA_POLICY_MIN(NLA_U16, 1),
6595         [NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME] =
6596                 NLA_POLICY_MIN(NLA_U16, 1),
6597         [NL80211_MESHCONF_HWMP_ROOTMODE] = NLA_POLICY_MAX(NLA_U8, 4),
6598         [NL80211_MESHCONF_HWMP_RANN_INTERVAL] =
6599                 NLA_POLICY_MIN(NLA_U16, 1),
6600         [NL80211_MESHCONF_GATE_ANNOUNCEMENTS] = NLA_POLICY_MAX(NLA_U8, 1),
6601         [NL80211_MESHCONF_FORWARDING] = NLA_POLICY_MAX(NLA_U8, 1),
6602         [NL80211_MESHCONF_RSSI_THRESHOLD] =
6603                 NLA_POLICY_RANGE(NLA_S32, -255, 0),
6604         [NL80211_MESHCONF_HT_OPMODE] = { .type = NLA_U16 },
6605         [NL80211_MESHCONF_HWMP_PATH_TO_ROOT_TIMEOUT] = { .type = NLA_U32 },
6606         [NL80211_MESHCONF_HWMP_ROOT_INTERVAL] =
6607                 NLA_POLICY_MIN(NLA_U16, 1),
6608         [NL80211_MESHCONF_HWMP_CONFIRMATION_INTERVAL] =
6609                 NLA_POLICY_MIN(NLA_U16, 1),
6610         [NL80211_MESHCONF_POWER_MODE] =
6611                 NLA_POLICY_RANGE(NLA_U32,
6612                                  NL80211_MESH_POWER_ACTIVE,
6613                                  NL80211_MESH_POWER_MAX),
6614         [NL80211_MESHCONF_AWAKE_WINDOW] = { .type = NLA_U16 },
6615         [NL80211_MESHCONF_PLINK_TIMEOUT] = { .type = NLA_U32 },
6616         [NL80211_MESHCONF_CONNECTED_TO_GATE] = NLA_POLICY_RANGE(NLA_U8, 0, 1),
6617 };
6618
6619 static const struct nla_policy
6620         nl80211_mesh_setup_params_policy[NL80211_MESH_SETUP_ATTR_MAX+1] = {
6621         [NL80211_MESH_SETUP_ENABLE_VENDOR_SYNC] = { .type = NLA_U8 },
6622         [NL80211_MESH_SETUP_ENABLE_VENDOR_PATH_SEL] = { .type = NLA_U8 },
6623         [NL80211_MESH_SETUP_ENABLE_VENDOR_METRIC] = { .type = NLA_U8 },
6624         [NL80211_MESH_SETUP_USERSPACE_AUTH] = { .type = NLA_FLAG },
6625         [NL80211_MESH_SETUP_AUTH_PROTOCOL] = { .type = NLA_U8 },
6626         [NL80211_MESH_SETUP_USERSPACE_MPM] = { .type = NLA_FLAG },
6627         [NL80211_MESH_SETUP_IE] =
6628                 NLA_POLICY_VALIDATE_FN(NLA_BINARY, validate_ie_attr,
6629                                        IEEE80211_MAX_DATA_LEN),
6630         [NL80211_MESH_SETUP_USERSPACE_AMPE] = { .type = NLA_FLAG },
6631 };
6632
6633 static int nl80211_parse_mesh_config(struct genl_info *info,
6634                                      struct mesh_config *cfg,
6635                                      u32 *mask_out)
6636 {
6637         struct nlattr *tb[NL80211_MESHCONF_ATTR_MAX + 1];
6638         u32 mask = 0;
6639         u16 ht_opmode;
6640
6641 #define FILL_IN_MESH_PARAM_IF_SET(tb, cfg, param, mask, attr, fn)       \
6642 do {                                                                    \
6643         if (tb[attr]) {                                                 \
6644                 cfg->param = fn(tb[attr]);                              \
6645                 mask |= BIT((attr) - 1);                                \
6646         }                                                               \
6647 } while (0)
6648
6649         if (!info->attrs[NL80211_ATTR_MESH_CONFIG])
6650                 return -EINVAL;
6651         if (nla_parse_nested_deprecated(tb, NL80211_MESHCONF_ATTR_MAX, info->attrs[NL80211_ATTR_MESH_CONFIG], nl80211_meshconf_params_policy, info->extack))
6652                 return -EINVAL;
6653
6654         /* This makes sure that there aren't more than 32 mesh config
6655          * parameters (otherwise our bitfield scheme would not work.) */
6656         BUILD_BUG_ON(NL80211_MESHCONF_ATTR_MAX > 32);
6657
6658         /* Fill in the params struct */
6659         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshRetryTimeout, mask,
6660                                   NL80211_MESHCONF_RETRY_TIMEOUT, nla_get_u16);
6661         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshConfirmTimeout, mask,
6662                                   NL80211_MESHCONF_CONFIRM_TIMEOUT,
6663                                   nla_get_u16);
6664         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHoldingTimeout, mask,
6665                                   NL80211_MESHCONF_HOLDING_TIMEOUT,
6666                                   nla_get_u16);
6667         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshMaxPeerLinks, mask,
6668                                   NL80211_MESHCONF_MAX_PEER_LINKS,
6669                                   nla_get_u16);
6670         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshMaxRetries, mask,
6671                                   NL80211_MESHCONF_MAX_RETRIES, nla_get_u8);
6672         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshTTL, mask,
6673                                   NL80211_MESHCONF_TTL, nla_get_u8);
6674         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, element_ttl, mask,
6675                                   NL80211_MESHCONF_ELEMENT_TTL, nla_get_u8);
6676         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, auto_open_plinks, mask,
6677                                   NL80211_MESHCONF_AUTO_OPEN_PLINKS,
6678                                   nla_get_u8);
6679         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshNbrOffsetMaxNeighbor,
6680                                   mask,
6681                                   NL80211_MESHCONF_SYNC_OFFSET_MAX_NEIGHBOR,
6682                                   nla_get_u32);
6683         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPmaxPREQretries, mask,
6684                                   NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES,
6685                                   nla_get_u8);
6686         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, path_refresh_time, mask,
6687                                   NL80211_MESHCONF_PATH_REFRESH_TIME,
6688                                   nla_get_u32);
6689         if (mask & BIT(NL80211_MESHCONF_PATH_REFRESH_TIME) &&
6690             (cfg->path_refresh_time < 1 || cfg->path_refresh_time > 65535))
6691                 return -EINVAL;
6692         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, min_discovery_timeout, mask,
6693                                   NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT,
6694                                   nla_get_u16);
6695         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPactivePathTimeout,
6696                                   mask,
6697                                   NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT,
6698                                   nla_get_u32);
6699         if (mask & BIT(NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT) &&
6700             (cfg->dot11MeshHWMPactivePathTimeout < 1 ||
6701              cfg->dot11MeshHWMPactivePathTimeout > 65535))
6702                 return -EINVAL;
6703         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPpreqMinInterval, mask,
6704                                   NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL,
6705                                   nla_get_u16);
6706         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPperrMinInterval, mask,
6707                                   NL80211_MESHCONF_HWMP_PERR_MIN_INTERVAL,
6708                                   nla_get_u16);
6709         FILL_IN_MESH_PARAM_IF_SET(tb, cfg,
6710                                   dot11MeshHWMPnetDiameterTraversalTime, mask,
6711                                   NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME,
6712                                   nla_get_u16);
6713         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPRootMode, mask,
6714                                   NL80211_MESHCONF_HWMP_ROOTMODE, nla_get_u8);
6715         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPRannInterval, mask,
6716                                   NL80211_MESHCONF_HWMP_RANN_INTERVAL,
6717                                   nla_get_u16);
6718         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshGateAnnouncementProtocol,
6719                                   mask, NL80211_MESHCONF_GATE_ANNOUNCEMENTS,
6720                                   nla_get_u8);
6721         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshForwarding, mask,
6722                                   NL80211_MESHCONF_FORWARDING, nla_get_u8);
6723         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, rssi_threshold, mask,
6724                                   NL80211_MESHCONF_RSSI_THRESHOLD,
6725                                   nla_get_s32);
6726         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshConnectedToMeshGate, mask,
6727                                   NL80211_MESHCONF_CONNECTED_TO_GATE,
6728                                   nla_get_u8);
6729         /*
6730          * Check HT operation mode based on
6731          * IEEE 802.11-2016 9.4.2.57 HT Operation element.
6732          */
6733         if (tb[NL80211_MESHCONF_HT_OPMODE]) {
6734                 ht_opmode = nla_get_u16(tb[NL80211_MESHCONF_HT_OPMODE]);
6735
6736                 if (ht_opmode & ~(IEEE80211_HT_OP_MODE_PROTECTION |
6737                                   IEEE80211_HT_OP_MODE_NON_GF_STA_PRSNT |
6738                                   IEEE80211_HT_OP_MODE_NON_HT_STA_PRSNT))
6739                         return -EINVAL;
6740
6741                 /* NON_HT_STA bit is reserved, but some programs set it */
6742                 ht_opmode &= ~IEEE80211_HT_OP_MODE_NON_HT_STA_PRSNT;
6743
6744                 cfg->ht_opmode = ht_opmode;
6745                 mask |= (1 << (NL80211_MESHCONF_HT_OPMODE - 1));
6746         }
6747         FILL_IN_MESH_PARAM_IF_SET(tb, cfg,
6748                                   dot11MeshHWMPactivePathToRootTimeout, mask,
6749                                   NL80211_MESHCONF_HWMP_PATH_TO_ROOT_TIMEOUT,
6750                                   nla_get_u32);
6751         if (mask & BIT(NL80211_MESHCONF_HWMP_PATH_TO_ROOT_TIMEOUT) &&
6752             (cfg->dot11MeshHWMPactivePathToRootTimeout < 1 ||
6753              cfg->dot11MeshHWMPactivePathToRootTimeout > 65535))
6754                 return -EINVAL;
6755         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMProotInterval, mask,
6756                                   NL80211_MESHCONF_HWMP_ROOT_INTERVAL,
6757                                   nla_get_u16);
6758         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPconfirmationInterval,
6759                                   mask,
6760                                   NL80211_MESHCONF_HWMP_CONFIRMATION_INTERVAL,
6761                                   nla_get_u16);
6762         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, power_mode, mask,
6763                                   NL80211_MESHCONF_POWER_MODE, nla_get_u32);
6764         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshAwakeWindowDuration, mask,
6765                                   NL80211_MESHCONF_AWAKE_WINDOW, nla_get_u16);
6766         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, plink_timeout, mask,
6767                                   NL80211_MESHCONF_PLINK_TIMEOUT, nla_get_u32);
6768         if (mask_out)
6769                 *mask_out = mask;
6770
6771         return 0;
6772
6773 #undef FILL_IN_MESH_PARAM_IF_SET
6774 }
6775
6776 static int nl80211_parse_mesh_setup(struct genl_info *info,
6777                                      struct mesh_setup *setup)
6778 {
6779         struct cfg80211_registered_device *rdev = info->user_ptr[0];
6780         struct nlattr *tb[NL80211_MESH_SETUP_ATTR_MAX + 1];
6781
6782         if (!info->attrs[NL80211_ATTR_MESH_SETUP])
6783                 return -EINVAL;
6784         if (nla_parse_nested_deprecated(tb, NL80211_MESH_SETUP_ATTR_MAX, info->attrs[NL80211_ATTR_MESH_SETUP], nl80211_mesh_setup_params_policy, info->extack))
6785                 return -EINVAL;
6786
6787         if (tb[NL80211_MESH_SETUP_ENABLE_VENDOR_SYNC])
6788                 setup->sync_method =
6789                 (nla_get_u8(tb[NL80211_MESH_SETUP_ENABLE_VENDOR_SYNC])) ?
6790                  IEEE80211_SYNC_METHOD_VENDOR :
6791                  IEEE80211_SYNC_METHOD_NEIGHBOR_OFFSET;
6792
6793         if (tb[NL80211_MESH_SETUP_ENABLE_VENDOR_PATH_SEL])
6794                 setup->path_sel_proto =
6795                 (nla_get_u8(tb[NL80211_MESH_SETUP_ENABLE_VENDOR_PATH_SEL])) ?
6796                  IEEE80211_PATH_PROTOCOL_VENDOR :
6797                  IEEE80211_PATH_PROTOCOL_HWMP;
6798
6799         if (tb[NL80211_MESH_SETUP_ENABLE_VENDOR_METRIC])
6800                 setup->path_metric =
6801                 (nla_get_u8(tb[NL80211_MESH_SETUP_ENABLE_VENDOR_METRIC])) ?
6802                  IEEE80211_PATH_METRIC_VENDOR :
6803                  IEEE80211_PATH_METRIC_AIRTIME;
6804
6805         if (tb[NL80211_MESH_SETUP_IE]) {
6806                 struct nlattr *ieattr =
6807                         tb[NL80211_MESH_SETUP_IE];
6808                 setup->ie = nla_data(ieattr);
6809                 setup->ie_len = nla_len(ieattr);
6810         }
6811         if (tb[NL80211_MESH_SETUP_USERSPACE_MPM] &&
6812             !(rdev->wiphy.features & NL80211_FEATURE_USERSPACE_MPM))
6813                 return -EINVAL;
6814         setup->user_mpm = nla_get_flag(tb[NL80211_MESH_SETUP_USERSPACE_MPM]);
6815         setup->is_authenticated = nla_get_flag(tb[NL80211_MESH_SETUP_USERSPACE_AUTH]);
6816         setup->is_secure = nla_get_flag(tb[NL80211_MESH_SETUP_USERSPACE_AMPE]);
6817         if (setup->is_secure)
6818                 setup->user_mpm = true;
6819
6820         if (tb[NL80211_MESH_SETUP_AUTH_PROTOCOL]) {
6821                 if (!setup->user_mpm)
6822                         return -EINVAL;
6823                 setup->auth_id =
6824                         nla_get_u8(tb[NL80211_MESH_SETUP_AUTH_PROTOCOL]);
6825         }
6826
6827         return 0;
6828 }
6829
6830 static int nl80211_update_mesh_config(struct sk_buff *skb,
6831                                       struct genl_info *info)
6832 {
6833         struct cfg80211_registered_device *rdev = info->user_ptr[0];
6834         struct net_device *dev = info->user_ptr[1];
6835         struct wireless_dev *wdev = dev->ieee80211_ptr;
6836         struct mesh_config cfg;
6837         u32 mask;
6838         int err;
6839
6840         if (wdev->iftype != NL80211_IFTYPE_MESH_POINT)
6841                 return -EOPNOTSUPP;
6842
6843         if (!rdev->ops->update_mesh_config)
6844                 return -EOPNOTSUPP;
6845
6846         err = nl80211_parse_mesh_config(info, &cfg, &mask);
6847         if (err)
6848                 return err;
6849
6850         wdev_lock(wdev);
6851         if (!wdev->mesh_id_len)
6852                 err = -ENOLINK;
6853
6854         if (!err)
6855                 err = rdev_update_mesh_config(rdev, dev, mask, &cfg);
6856
6857         wdev_unlock(wdev);
6858
6859         return err;
6860 }
6861
6862 static int nl80211_put_regdom(const struct ieee80211_regdomain *regdom,
6863                               struct sk_buff *msg)
6864 {
6865         struct nlattr *nl_reg_rules;
6866         unsigned int i;
6867
6868         if (nla_put_string(msg, NL80211_ATTR_REG_ALPHA2, regdom->alpha2) ||
6869             (regdom->dfs_region &&
6870              nla_put_u8(msg, NL80211_ATTR_DFS_REGION, regdom->dfs_region)))
6871                 goto nla_put_failure;
6872
6873         nl_reg_rules = nla_nest_start_noflag(msg, NL80211_ATTR_REG_RULES);
6874         if (!nl_reg_rules)
6875                 goto nla_put_failure;
6876
6877         for (i = 0; i < regdom->n_reg_rules; i++) {
6878                 struct nlattr *nl_reg_rule;
6879                 const struct ieee80211_reg_rule *reg_rule;
6880                 const struct ieee80211_freq_range *freq_range;
6881                 const struct ieee80211_power_rule *power_rule;
6882                 unsigned int max_bandwidth_khz;
6883
6884                 reg_rule = &regdom->reg_rules[i];
6885                 freq_range = &reg_rule->freq_range;
6886                 power_rule = &reg_rule->power_rule;
6887
6888                 nl_reg_rule = nla_nest_start_noflag(msg, i);
6889                 if (!nl_reg_rule)
6890                         goto nla_put_failure;
6891
6892                 max_bandwidth_khz = freq_range->max_bandwidth_khz;
6893                 if (!max_bandwidth_khz)
6894                         max_bandwidth_khz = reg_get_max_bandwidth(regdom,
6895                                                                   reg_rule);
6896
6897                 if (nla_put_u32(msg, NL80211_ATTR_REG_RULE_FLAGS,
6898                                 reg_rule->flags) ||
6899                     nla_put_u32(msg, NL80211_ATTR_FREQ_RANGE_START,
6900                                 freq_range->start_freq_khz) ||
6901                     nla_put_u32(msg, NL80211_ATTR_FREQ_RANGE_END,
6902                                 freq_range->end_freq_khz) ||
6903                     nla_put_u32(msg, NL80211_ATTR_FREQ_RANGE_MAX_BW,
6904                                 max_bandwidth_khz) ||
6905                     nla_put_u32(msg, NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN,
6906                                 power_rule->max_antenna_gain) ||
6907                     nla_put_u32(msg, NL80211_ATTR_POWER_RULE_MAX_EIRP,
6908                                 power_rule->max_eirp) ||
6909                     nla_put_u32(msg, NL80211_ATTR_DFS_CAC_TIME,
6910                                 reg_rule->dfs_cac_ms))
6911                         goto nla_put_failure;
6912
6913                 nla_nest_end(msg, nl_reg_rule);
6914         }
6915
6916         nla_nest_end(msg, nl_reg_rules);
6917         return 0;
6918
6919 nla_put_failure:
6920         return -EMSGSIZE;
6921 }
6922
6923 static int nl80211_get_reg_do(struct sk_buff *skb, struct genl_info *info)
6924 {
6925         const struct ieee80211_regdomain *regdom = NULL;
6926         struct cfg80211_registered_device *rdev;
6927         struct wiphy *wiphy = NULL;
6928         struct sk_buff *msg;
6929         void *hdr;
6930
6931         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
6932         if (!msg)
6933                 return -ENOBUFS;
6934
6935         hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
6936                              NL80211_CMD_GET_REG);
6937         if (!hdr)
6938                 goto put_failure;
6939
6940         if (info->attrs[NL80211_ATTR_WIPHY]) {
6941                 bool self_managed;
6942
6943                 rdev = cfg80211_get_dev_from_info(genl_info_net(info), info);
6944                 if (IS_ERR(rdev)) {
6945                         nlmsg_free(msg);
6946                         return PTR_ERR(rdev);
6947                 }
6948
6949                 wiphy = &rdev->wiphy;
6950                 self_managed = wiphy->regulatory_flags &
6951                                REGULATORY_WIPHY_SELF_MANAGED;
6952                 regdom = get_wiphy_regdom(wiphy);
6953
6954                 /* a self-managed-reg device must have a private regdom */
6955                 if (WARN_ON(!regdom && self_managed)) {
6956                         nlmsg_free(msg);
6957                         return -EINVAL;
6958                 }
6959
6960                 if (regdom &&
6961                     nla_put_u32(msg, NL80211_ATTR_WIPHY, get_wiphy_idx(wiphy)))
6962                         goto nla_put_failure;
6963         }
6964
6965         if (!wiphy && reg_last_request_cell_base() &&
6966             nla_put_u32(msg, NL80211_ATTR_USER_REG_HINT_TYPE,
6967                         NL80211_USER_REG_HINT_CELL_BASE))
6968                 goto nla_put_failure;
6969
6970         rcu_read_lock();
6971
6972         if (!regdom)
6973                 regdom = rcu_dereference(cfg80211_regdomain);
6974
6975         if (nl80211_put_regdom(regdom, msg))
6976                 goto nla_put_failure_rcu;
6977
6978         rcu_read_unlock();
6979
6980         genlmsg_end(msg, hdr);
6981         return genlmsg_reply(msg, info);
6982
6983 nla_put_failure_rcu:
6984         rcu_read_unlock();
6985 nla_put_failure:
6986 put_failure:
6987         nlmsg_free(msg);
6988         return -EMSGSIZE;
6989 }
6990
6991 static int nl80211_send_regdom(struct sk_buff *msg, struct netlink_callback *cb,
6992                                u32 seq, int flags, struct wiphy *wiphy,
6993                                const struct ieee80211_regdomain *regdom)
6994 {
6995         void *hdr = nl80211hdr_put(msg, NETLINK_CB(cb->skb).portid, seq, flags,
6996                                    NL80211_CMD_GET_REG);
6997
6998         if (!hdr)
6999                 return -1;
7000
7001         genl_dump_check_consistent(cb, hdr);
7002
7003         if (nl80211_put_regdom(regdom, msg))
7004                 goto nla_put_failure;
7005
7006         if (!wiphy && reg_last_request_cell_base() &&
7007             nla_put_u32(msg, NL80211_ATTR_USER_REG_HINT_TYPE,
7008                         NL80211_USER_REG_HINT_CELL_BASE))
7009                 goto nla_put_failure;
7010
7011         if (wiphy &&
7012             nla_put_u32(msg, NL80211_ATTR_WIPHY, get_wiphy_idx(wiphy)))
7013                 goto nla_put_failure;
7014
7015         if (wiphy && wiphy->regulatory_flags & REGULATORY_WIPHY_SELF_MANAGED &&
7016             nla_put_flag(msg, NL80211_ATTR_WIPHY_SELF_MANAGED_REG))
7017                 goto nla_put_failure;
7018
7019         genlmsg_end(msg, hdr);
7020         return 0;
7021
7022 nla_put_failure:
7023         genlmsg_cancel(msg, hdr);
7024         return -EMSGSIZE;
7025 }
7026
7027 static int nl80211_get_reg_dump(struct sk_buff *skb,
7028                                 struct netlink_callback *cb)
7029 {
7030         const struct ieee80211_regdomain *regdom = NULL;
7031         struct cfg80211_registered_device *rdev;
7032         int err, reg_idx, start = cb->args[2];
7033
7034         rtnl_lock();
7035
7036         if (cfg80211_regdomain && start == 0) {
7037                 err = nl80211_send_regdom(skb, cb, cb->nlh->nlmsg_seq,
7038                                           NLM_F_MULTI, NULL,
7039                                           rtnl_dereference(cfg80211_regdomain));
7040                 if (err < 0)
7041                         goto out_err;
7042         }
7043
7044         /* the global regdom is idx 0 */
7045         reg_idx = 1;
7046         list_for_each_entry(rdev, &cfg80211_rdev_list, list) {
7047                 regdom = get_wiphy_regdom(&rdev->wiphy);
7048                 if (!regdom)
7049                         continue;
7050
7051                 if (++reg_idx <= start)
7052                         continue;
7053
7054                 err = nl80211_send_regdom(skb, cb, cb->nlh->nlmsg_seq,
7055                                           NLM_F_MULTI, &rdev->wiphy, regdom);
7056                 if (err < 0) {
7057                         reg_idx--;
7058                         break;
7059                 }
7060         }
7061
7062         cb->args[2] = reg_idx;
7063         err = skb->len;
7064 out_err:
7065         rtnl_unlock();
7066         return err;
7067 }
7068
7069 #ifdef CONFIG_CFG80211_CRDA_SUPPORT
7070 static const struct nla_policy reg_rule_policy[NL80211_REG_RULE_ATTR_MAX + 1] = {
7071         [NL80211_ATTR_REG_RULE_FLAGS]           = { .type = NLA_U32 },
7072         [NL80211_ATTR_FREQ_RANGE_START]         = { .type = NLA_U32 },
7073         [NL80211_ATTR_FREQ_RANGE_END]           = { .type = NLA_U32 },
7074         [NL80211_ATTR_FREQ_RANGE_MAX_BW]        = { .type = NLA_U32 },
7075         [NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN]  = { .type = NLA_U32 },
7076         [NL80211_ATTR_POWER_RULE_MAX_EIRP]      = { .type = NLA_U32 },
7077         [NL80211_ATTR_DFS_CAC_TIME]             = { .type = NLA_U32 },
7078 };
7079
7080 static int parse_reg_rule(struct nlattr *tb[],
7081         struct ieee80211_reg_rule *reg_rule)
7082 {
7083         struct ieee80211_freq_range *freq_range = &reg_rule->freq_range;
7084         struct ieee80211_power_rule *power_rule = &reg_rule->power_rule;
7085
7086         if (!tb[NL80211_ATTR_REG_RULE_FLAGS])
7087                 return -EINVAL;
7088         if (!tb[NL80211_ATTR_FREQ_RANGE_START])
7089                 return -EINVAL;
7090         if (!tb[NL80211_ATTR_FREQ_RANGE_END])
7091                 return -EINVAL;
7092         if (!tb[NL80211_ATTR_FREQ_RANGE_MAX_BW])
7093                 return -EINVAL;
7094         if (!tb[NL80211_ATTR_POWER_RULE_MAX_EIRP])
7095                 return -EINVAL;
7096
7097         reg_rule->flags = nla_get_u32(tb[NL80211_ATTR_REG_RULE_FLAGS]);
7098
7099         freq_range->start_freq_khz =
7100                 nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_START]);
7101         freq_range->end_freq_khz =
7102                 nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_END]);
7103         freq_range->max_bandwidth_khz =
7104                 nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_MAX_BW]);
7105
7106         power_rule->max_eirp =
7107                 nla_get_u32(tb[NL80211_ATTR_POWER_RULE_MAX_EIRP]);
7108
7109         if (tb[NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN])
7110                 power_rule->max_antenna_gain =
7111                         nla_get_u32(tb[NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN]);
7112
7113         if (tb[NL80211_ATTR_DFS_CAC_TIME])
7114                 reg_rule->dfs_cac_ms =
7115                         nla_get_u32(tb[NL80211_ATTR_DFS_CAC_TIME]);
7116
7117         return 0;
7118 }
7119
7120 static int nl80211_set_reg(struct sk_buff *skb, struct genl_info *info)
7121 {
7122         struct nlattr *tb[NL80211_REG_RULE_ATTR_MAX + 1];
7123         struct nlattr *nl_reg_rule;
7124         char *alpha2;
7125         int rem_reg_rules, r;
7126         u32 num_rules = 0, rule_idx = 0;
7127         enum nl80211_dfs_regions dfs_region = NL80211_DFS_UNSET;
7128         struct ieee80211_regdomain *rd;
7129
7130         if (!info->attrs[NL80211_ATTR_REG_ALPHA2])
7131                 return -EINVAL;
7132
7133         if (!info->attrs[NL80211_ATTR_REG_RULES])
7134                 return -EINVAL;
7135
7136         alpha2 = nla_data(info->attrs[NL80211_ATTR_REG_ALPHA2]);
7137
7138         if (info->attrs[NL80211_ATTR_DFS_REGION])
7139                 dfs_region = nla_get_u8(info->attrs[NL80211_ATTR_DFS_REGION]);
7140
7141         nla_for_each_nested(nl_reg_rule, info->attrs[NL80211_ATTR_REG_RULES],
7142                             rem_reg_rules) {
7143                 num_rules++;
7144                 if (num_rules > NL80211_MAX_SUPP_REG_RULES)
7145                         return -EINVAL;
7146         }
7147
7148         if (!reg_is_valid_request(alpha2))
7149                 return -EINVAL;
7150
7151         rd = kzalloc(struct_size(rd, reg_rules, num_rules), GFP_KERNEL);
7152         if (!rd)
7153                 return -ENOMEM;
7154
7155         rd->n_reg_rules = num_rules;
7156         rd->alpha2[0] = alpha2[0];
7157         rd->alpha2[1] = alpha2[1];
7158
7159         /*
7160          * Disable DFS master mode if the DFS region was
7161          * not supported or known on this kernel.
7162          */
7163         if (reg_supported_dfs_region(dfs_region))
7164                 rd->dfs_region = dfs_region;
7165
7166         nla_for_each_nested(nl_reg_rule, info->attrs[NL80211_ATTR_REG_RULES],
7167                             rem_reg_rules) {
7168                 r = nla_parse_nested_deprecated(tb, NL80211_REG_RULE_ATTR_MAX,
7169                                                 nl_reg_rule, reg_rule_policy,
7170                                                 info->extack);
7171                 if (r)
7172                         goto bad_reg;
7173                 r = parse_reg_rule(tb, &rd->reg_rules[rule_idx]);
7174                 if (r)
7175                         goto bad_reg;
7176
7177                 rule_idx++;
7178
7179                 if (rule_idx > NL80211_MAX_SUPP_REG_RULES) {
7180                         r = -EINVAL;
7181                         goto bad_reg;
7182                 }
7183         }
7184
7185         /* set_regdom takes ownership of rd */
7186         return set_regdom(rd, REGD_SOURCE_CRDA);
7187  bad_reg:
7188         kfree(rd);
7189         return r;
7190 }
7191 #endif /* CONFIG_CFG80211_CRDA_SUPPORT */
7192
7193 static int validate_scan_freqs(struct nlattr *freqs)
7194 {
7195         struct nlattr *attr1, *attr2;
7196         int n_channels = 0, tmp1, tmp2;
7197
7198         nla_for_each_nested(attr1, freqs, tmp1)
7199                 if (nla_len(attr1) != sizeof(u32))
7200                         return 0;
7201
7202         nla_for_each_nested(attr1, freqs, tmp1) {
7203                 n_channels++;
7204                 /*
7205                  * Some hardware has a limited channel list for
7206                  * scanning, and it is pretty much nonsensical
7207                  * to scan for a channel twice, so disallow that
7208                  * and don't require drivers to check that the
7209                  * channel list they get isn't longer than what
7210                  * they can scan, as long as they can scan all
7211                  * the channels they registered at once.
7212                  */
7213                 nla_for_each_nested(attr2, freqs, tmp2)
7214                         if (attr1 != attr2 &&
7215                             nla_get_u32(attr1) == nla_get_u32(attr2))
7216                                 return 0;
7217         }
7218
7219         return n_channels;
7220 }
7221
7222 static bool is_band_valid(struct wiphy *wiphy, enum nl80211_band b)
7223 {
7224         return b < NUM_NL80211_BANDS && wiphy->bands[b];
7225 }
7226
7227 static int parse_bss_select(struct nlattr *nla, struct wiphy *wiphy,
7228                             struct cfg80211_bss_selection *bss_select)
7229 {
7230         struct nlattr *attr[NL80211_BSS_SELECT_ATTR_MAX + 1];
7231         struct nlattr *nest;
7232         int err;
7233         bool found = false;
7234         int i;
7235
7236         /* only process one nested attribute */
7237         nest = nla_data(nla);
7238         if (!nla_ok(nest, nla_len(nest)))
7239                 return -EINVAL;
7240
7241         err = nla_parse_nested_deprecated(attr, NL80211_BSS_SELECT_ATTR_MAX,
7242                                           nest, nl80211_bss_select_policy,
7243                                           NULL);
7244         if (err)
7245                 return err;
7246
7247         /* only one attribute may be given */
7248         for (i = 0; i <= NL80211_BSS_SELECT_ATTR_MAX; i++) {
7249                 if (attr[i]) {
7250                         if (found)
7251                                 return -EINVAL;
7252                         found = true;
7253                 }
7254         }
7255
7256         bss_select->behaviour = __NL80211_BSS_SELECT_ATTR_INVALID;
7257
7258         if (attr[NL80211_BSS_SELECT_ATTR_RSSI])
7259                 bss_select->behaviour = NL80211_BSS_SELECT_ATTR_RSSI;
7260
7261         if (attr[NL80211_BSS_SELECT_ATTR_BAND_PREF]) {
7262                 bss_select->behaviour = NL80211_BSS_SELECT_ATTR_BAND_PREF;
7263                 bss_select->param.band_pref =
7264                         nla_get_u32(attr[NL80211_BSS_SELECT_ATTR_BAND_PREF]);
7265                 if (!is_band_valid(wiphy, bss_select->param.band_pref))
7266                         return -EINVAL;
7267         }
7268
7269         if (attr[NL80211_BSS_SELECT_ATTR_RSSI_ADJUST]) {
7270                 struct nl80211_bss_select_rssi_adjust *adj_param;
7271
7272                 adj_param = nla_data(attr[NL80211_BSS_SELECT_ATTR_RSSI_ADJUST]);
7273                 bss_select->behaviour = NL80211_BSS_SELECT_ATTR_RSSI_ADJUST;
7274                 bss_select->param.adjust.band = adj_param->band;
7275                 bss_select->param.adjust.delta = adj_param->delta;
7276                 if (!is_band_valid(wiphy, bss_select->param.adjust.band))
7277                         return -EINVAL;
7278         }
7279
7280         /* user-space did not provide behaviour attribute */
7281         if (bss_select->behaviour == __NL80211_BSS_SELECT_ATTR_INVALID)
7282                 return -EINVAL;
7283
7284         if (!(wiphy->bss_select_support & BIT(bss_select->behaviour)))
7285                 return -EINVAL;
7286
7287         return 0;
7288 }
7289
7290 int nl80211_parse_random_mac(struct nlattr **attrs,
7291                              u8 *mac_addr, u8 *mac_addr_mask)
7292 {
7293         int i;
7294
7295         if (!attrs[NL80211_ATTR_MAC] && !attrs[NL80211_ATTR_MAC_MASK]) {
7296                 eth_zero_addr(mac_addr);
7297                 eth_zero_addr(mac_addr_mask);
7298                 mac_addr[0] = 0x2;
7299                 mac_addr_mask[0] = 0x3;
7300
7301                 return 0;
7302         }
7303
7304         /* need both or none */
7305         if (!attrs[NL80211_ATTR_MAC] || !attrs[NL80211_ATTR_MAC_MASK])
7306                 return -EINVAL;
7307
7308         memcpy(mac_addr, nla_data(attrs[NL80211_ATTR_MAC]), ETH_ALEN);
7309         memcpy(mac_addr_mask, nla_data(attrs[NL80211_ATTR_MAC_MASK]), ETH_ALEN);
7310
7311         /* don't allow or configure an mcast address */
7312         if (!is_multicast_ether_addr(mac_addr_mask) ||
7313             is_multicast_ether_addr(mac_addr))
7314                 return -EINVAL;
7315
7316         /*
7317          * allow users to pass a MAC address that has bits set outside
7318          * of the mask, but don't bother drivers with having to deal
7319          * with such bits
7320          */
7321         for (i = 0; i < ETH_ALEN; i++)
7322                 mac_addr[i] &= mac_addr_mask[i];
7323
7324         return 0;
7325 }
7326
7327 static bool cfg80211_off_channel_oper_allowed(struct wireless_dev *wdev)
7328 {
7329         ASSERT_WDEV_LOCK(wdev);
7330
7331         if (!cfg80211_beaconing_iface_active(wdev))
7332                 return true;
7333
7334         if (!(wdev->chandef.chan->flags & IEEE80211_CHAN_RADAR))
7335                 return true;
7336
7337         return regulatory_pre_cac_allowed(wdev->wiphy);
7338 }
7339
7340 static bool nl80211_check_scan_feat(struct wiphy *wiphy, u32 flags, u32 flag,
7341                                     enum nl80211_ext_feature_index feat)
7342 {
7343         if (!(flags & flag))
7344                 return true;
7345         if (wiphy_ext_feature_isset(wiphy, feat))
7346                 return true;
7347         return false;
7348 }
7349
7350 static int
7351 nl80211_check_scan_flags(struct wiphy *wiphy, struct wireless_dev *wdev,
7352                          void *request, struct nlattr **attrs,
7353                          bool is_sched_scan)
7354 {
7355         u8 *mac_addr, *mac_addr_mask;
7356         u32 *flags;
7357         enum nl80211_feature_flags randomness_flag;
7358
7359         if (!attrs[NL80211_ATTR_SCAN_FLAGS])
7360                 return 0;
7361
7362         if (is_sched_scan) {
7363                 struct cfg80211_sched_scan_request *req = request;
7364
7365                 randomness_flag = wdev ?
7366                                   NL80211_FEATURE_SCHED_SCAN_RANDOM_MAC_ADDR :
7367                                   NL80211_FEATURE_ND_RANDOM_MAC_ADDR;
7368                 flags = &req->flags;
7369                 mac_addr = req->mac_addr;
7370                 mac_addr_mask = req->mac_addr_mask;
7371         } else {
7372                 struct cfg80211_scan_request *req = request;
7373
7374                 randomness_flag = NL80211_FEATURE_SCAN_RANDOM_MAC_ADDR;
7375                 flags = &req->flags;
7376                 mac_addr = req->mac_addr;
7377                 mac_addr_mask = req->mac_addr_mask;
7378         }
7379
7380         *flags = nla_get_u32(attrs[NL80211_ATTR_SCAN_FLAGS]);
7381
7382         if (((*flags & NL80211_SCAN_FLAG_LOW_PRIORITY) &&
7383              !(wiphy->features & NL80211_FEATURE_LOW_PRIORITY_SCAN)) ||
7384             !nl80211_check_scan_feat(wiphy, *flags,
7385                                      NL80211_SCAN_FLAG_LOW_SPAN,
7386                                      NL80211_EXT_FEATURE_LOW_SPAN_SCAN) ||
7387             !nl80211_check_scan_feat(wiphy, *flags,
7388                                      NL80211_SCAN_FLAG_LOW_POWER,
7389                                      NL80211_EXT_FEATURE_LOW_POWER_SCAN) ||
7390             !nl80211_check_scan_feat(wiphy, *flags,
7391                                      NL80211_SCAN_FLAG_HIGH_ACCURACY,
7392                                      NL80211_EXT_FEATURE_HIGH_ACCURACY_SCAN) ||
7393             !nl80211_check_scan_feat(wiphy, *flags,
7394                                      NL80211_SCAN_FLAG_FILS_MAX_CHANNEL_TIME,
7395                                      NL80211_EXT_FEATURE_FILS_MAX_CHANNEL_TIME) ||
7396             !nl80211_check_scan_feat(wiphy, *flags,
7397                                      NL80211_SCAN_FLAG_ACCEPT_BCAST_PROBE_RESP,
7398                                      NL80211_EXT_FEATURE_ACCEPT_BCAST_PROBE_RESP) ||
7399             !nl80211_check_scan_feat(wiphy, *flags,
7400                                      NL80211_SCAN_FLAG_OCE_PROBE_REQ_DEFERRAL_SUPPRESSION,
7401                                      NL80211_EXT_FEATURE_OCE_PROBE_REQ_DEFERRAL_SUPPRESSION) ||
7402             !nl80211_check_scan_feat(wiphy, *flags,
7403                                      NL80211_SCAN_FLAG_OCE_PROBE_REQ_HIGH_TX_RATE,
7404                                      NL80211_EXT_FEATURE_OCE_PROBE_REQ_HIGH_TX_RATE) ||
7405             !nl80211_check_scan_feat(wiphy, *flags,
7406                                      NL80211_SCAN_FLAG_RANDOM_SN,
7407                                      NL80211_EXT_FEATURE_SCAN_RANDOM_SN) ||
7408             !nl80211_check_scan_feat(wiphy, *flags,
7409                                      NL80211_SCAN_FLAG_MIN_PREQ_CONTENT,
7410                                      NL80211_EXT_FEATURE_SCAN_MIN_PREQ_CONTENT))
7411                 return -EOPNOTSUPP;
7412
7413         if (*flags & NL80211_SCAN_FLAG_RANDOM_ADDR) {
7414                 int err;
7415
7416                 if (!(wiphy->features & randomness_flag) ||
7417                     (wdev && wdev->current_bss))
7418                         return -EOPNOTSUPP;
7419
7420                 err = nl80211_parse_random_mac(attrs, mac_addr, mac_addr_mask);
7421                 if (err)
7422                         return err;
7423         }
7424
7425         return 0;
7426 }
7427
7428 static int nl80211_trigger_scan(struct sk_buff *skb, struct genl_info *info)
7429 {
7430         struct cfg80211_registered_device *rdev = info->user_ptr[0];
7431         struct wireless_dev *wdev = info->user_ptr[1];
7432         struct cfg80211_scan_request *request;
7433         struct nlattr *attr;
7434         struct wiphy *wiphy;
7435         int err, tmp, n_ssids = 0, n_channels, i;
7436         size_t ie_len;
7437
7438         wiphy = &rdev->wiphy;
7439
7440         if (wdev->iftype == NL80211_IFTYPE_NAN)
7441                 return -EOPNOTSUPP;
7442
7443         if (!rdev->ops->scan)
7444                 return -EOPNOTSUPP;
7445
7446         if (rdev->scan_req || rdev->scan_msg) {
7447                 err = -EBUSY;
7448                 goto unlock;
7449         }
7450
7451         if (info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]) {
7452                 n_channels = validate_scan_freqs(
7453                                 info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]);
7454                 if (!n_channels) {
7455                         err = -EINVAL;
7456                         goto unlock;
7457                 }
7458         } else {
7459                 n_channels = ieee80211_get_num_supported_channels(wiphy);
7460         }
7461
7462         if (info->attrs[NL80211_ATTR_SCAN_SSIDS])
7463                 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_SSIDS], tmp)
7464                         n_ssids++;
7465
7466         if (n_ssids > wiphy->max_scan_ssids) {
7467                 err = -EINVAL;
7468                 goto unlock;
7469         }
7470
7471         if (info->attrs[NL80211_ATTR_IE])
7472                 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
7473         else
7474                 ie_len = 0;
7475
7476         if (ie_len > wiphy->max_scan_ie_len) {
7477                 err = -EINVAL;
7478                 goto unlock;
7479         }
7480
7481         request = kzalloc(sizeof(*request)
7482                         + sizeof(*request->ssids) * n_ssids
7483                         + sizeof(*request->channels) * n_channels
7484                         + ie_len, GFP_KERNEL);
7485         if (!request) {
7486                 err = -ENOMEM;
7487                 goto unlock;
7488         }
7489
7490         if (n_ssids)
7491                 request->ssids = (void *)&request->channels[n_channels];
7492         request->n_ssids = n_ssids;
7493         if (ie_len) {
7494                 if (n_ssids)
7495                         request->ie = (void *)(request->ssids + n_ssids);
7496                 else
7497                         request->ie = (void *)(request->channels + n_channels);
7498         }
7499
7500         i = 0;
7501         if (info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]) {
7502                 /* user specified, bail out if channel not found */
7503                 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_FREQUENCIES], tmp) {
7504                         struct ieee80211_channel *chan;
7505
7506                         chan = ieee80211_get_channel(wiphy, nla_get_u32(attr));
7507
7508                         if (!chan) {
7509                                 err = -EINVAL;
7510                                 goto out_free;
7511                         }
7512
7513                         /* ignore disabled channels */
7514                         if (chan->flags & IEEE80211_CHAN_DISABLED)
7515                                 continue;
7516
7517                         request->channels[i] = chan;
7518                         i++;
7519                 }
7520         } else {
7521                 enum nl80211_band band;
7522
7523                 /* all channels */
7524                 for (band = 0; band < NUM_NL80211_BANDS; band++) {
7525                         int j;
7526
7527                         if (!wiphy->bands[band])
7528                                 continue;
7529                         for (j = 0; j < wiphy->bands[band]->n_channels; j++) {
7530                                 struct ieee80211_channel *chan;
7531
7532                                 chan = &wiphy->bands[band]->channels[j];
7533
7534                                 if (chan->flags & IEEE80211_CHAN_DISABLED)
7535                                         continue;
7536
7537                                 request->channels[i] = chan;
7538                                 i++;
7539                         }
7540                 }
7541         }
7542
7543         if (!i) {
7544                 err = -EINVAL;
7545                 goto out_free;
7546         }
7547
7548         request->n_channels = i;
7549
7550         wdev_lock(wdev);
7551         if (!cfg80211_off_channel_oper_allowed(wdev)) {
7552                 struct ieee80211_channel *chan;
7553
7554                 if (request->n_channels != 1) {
7555                         wdev_unlock(wdev);
7556                         err = -EBUSY;
7557                         goto out_free;
7558                 }
7559
7560                 chan = request->channels[0];
7561                 if (chan->center_freq != wdev->chandef.chan->center_freq) {
7562                         wdev_unlock(wdev);
7563                         err = -EBUSY;
7564                         goto out_free;
7565                 }
7566         }
7567         wdev_unlock(wdev);
7568
7569         i = 0;
7570         if (n_ssids) {
7571                 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_SSIDS], tmp) {
7572                         if (nla_len(attr) > IEEE80211_MAX_SSID_LEN) {
7573                                 err = -EINVAL;
7574                                 goto out_free;
7575                         }
7576                         request->ssids[i].ssid_len = nla_len(attr);
7577                         memcpy(request->ssids[i].ssid, nla_data(attr), nla_len(attr));
7578                         i++;
7579                 }
7580         }
7581
7582         if (info->attrs[NL80211_ATTR_IE]) {
7583                 request->ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
7584                 memcpy((void *)request->ie,
7585                        nla_data(info->attrs[NL80211_ATTR_IE]),
7586                        request->ie_len);
7587         }
7588
7589         for (i = 0; i < NUM_NL80211_BANDS; i++)
7590                 if (wiphy->bands[i])
7591                         request->rates[i] =
7592                                 (1 << wiphy->bands[i]->n_bitrates) - 1;
7593
7594         if (info->attrs[NL80211_ATTR_SCAN_SUPP_RATES]) {
7595                 nla_for_each_nested(attr,
7596                                     info->attrs[NL80211_ATTR_SCAN_SUPP_RATES],
7597                                     tmp) {
7598                         enum nl80211_band band = nla_type(attr);
7599
7600                         if (band < 0 || band >= NUM_NL80211_BANDS) {
7601                                 err = -EINVAL;
7602                                 goto out_free;
7603                         }
7604
7605                         if (!wiphy->bands[band])
7606                                 continue;
7607
7608                         err = ieee80211_get_ratemask(wiphy->bands[band],
7609                                                      nla_data(attr),
7610                                                      nla_len(attr),
7611                                                      &request->rates[band]);
7612                         if (err)
7613                                 goto out_free;
7614                 }
7615         }
7616
7617         if (info->attrs[NL80211_ATTR_MEASUREMENT_DURATION]) {
7618                 if (!wiphy_ext_feature_isset(wiphy,
7619                                         NL80211_EXT_FEATURE_SET_SCAN_DWELL)) {
7620                         err = -EOPNOTSUPP;
7621                         goto out_free;
7622                 }
7623
7624                 request->duration =
7625                         nla_get_u16(info->attrs[NL80211_ATTR_MEASUREMENT_DURATION]);
7626                 request->duration_mandatory =
7627                         nla_get_flag(info->attrs[NL80211_ATTR_MEASUREMENT_DURATION_MANDATORY]);
7628         }
7629
7630         err = nl80211_check_scan_flags(wiphy, wdev, request, info->attrs,
7631                                        false);
7632         if (err)
7633                 goto out_free;
7634
7635         request->no_cck =
7636                 nla_get_flag(info->attrs[NL80211_ATTR_TX_NO_CCK_RATE]);
7637
7638         /* Initial implementation used NL80211_ATTR_MAC to set the specific
7639          * BSSID to scan for. This was problematic because that same attribute
7640          * was already used for another purpose (local random MAC address). The
7641          * NL80211_ATTR_BSSID attribute was added to fix this. For backwards
7642          * compatibility with older userspace components, also use the
7643          * NL80211_ATTR_MAC value here if it can be determined to be used for
7644          * the specific BSSID use case instead of the random MAC address
7645          * (NL80211_ATTR_SCAN_FLAGS is used to enable random MAC address use).
7646          */
7647         if (info->attrs[NL80211_ATTR_BSSID])
7648                 memcpy(request->bssid,
7649                        nla_data(info->attrs[NL80211_ATTR_BSSID]), ETH_ALEN);
7650         else if (!(request->flags & NL80211_SCAN_FLAG_RANDOM_ADDR) &&
7651                  info->attrs[NL80211_ATTR_MAC])
7652                 memcpy(request->bssid, nla_data(info->attrs[NL80211_ATTR_MAC]),
7653                        ETH_ALEN);
7654         else
7655                 eth_broadcast_addr(request->bssid);
7656
7657         request->wdev = wdev;
7658         request->wiphy = &rdev->wiphy;
7659         request->scan_start = jiffies;
7660
7661         rdev->scan_req = request;
7662         err = rdev_scan(rdev, request);
7663
7664         if (!err) {
7665                 nl80211_send_scan_start(rdev, wdev);
7666                 if (wdev->netdev)
7667                         dev_hold(wdev->netdev);
7668         } else {
7669  out_free:
7670                 rdev->scan_req = NULL;
7671                 kfree(request);
7672         }
7673
7674  unlock:
7675         return err;
7676 }
7677
7678 static int nl80211_abort_scan(struct sk_buff *skb, struct genl_info *info)
7679 {
7680         struct cfg80211_registered_device *rdev = info->user_ptr[0];
7681         struct wireless_dev *wdev = info->user_ptr[1];
7682
7683         if (!rdev->ops->abort_scan)
7684                 return -EOPNOTSUPP;
7685
7686         if (rdev->scan_msg)
7687                 return 0;
7688
7689         if (!rdev->scan_req)
7690                 return -ENOENT;
7691
7692         rdev_abort_scan(rdev, wdev);
7693         return 0;
7694 }
7695
7696 static int
7697 nl80211_parse_sched_scan_plans(struct wiphy *wiphy, int n_plans,
7698                                struct cfg80211_sched_scan_request *request,
7699                                struct nlattr **attrs)
7700 {
7701         int tmp, err, i = 0;
7702         struct nlattr *attr;
7703
7704         if (!attrs[NL80211_ATTR_SCHED_SCAN_PLANS]) {
7705                 u32 interval;
7706
7707                 /*
7708                  * If scan plans are not specified,
7709                  * %NL80211_ATTR_SCHED_SCAN_INTERVAL will be specified. In this
7710                  * case one scan plan will be set with the specified scan
7711                  * interval and infinite number of iterations.
7712                  */
7713                 interval = nla_get_u32(attrs[NL80211_ATTR_SCHED_SCAN_INTERVAL]);
7714                 if (!interval)
7715                         return -EINVAL;
7716
7717                 request->scan_plans[0].interval =
7718                         DIV_ROUND_UP(interval, MSEC_PER_SEC);
7719                 if (!request->scan_plans[0].interval)
7720                         return -EINVAL;
7721
7722                 if (request->scan_plans[0].interval >
7723                     wiphy->max_sched_scan_plan_interval)
7724                         request->scan_plans[0].interval =
7725                                 wiphy->max_sched_scan_plan_interval;
7726
7727                 return 0;
7728         }
7729
7730         nla_for_each_nested(attr, attrs[NL80211_ATTR_SCHED_SCAN_PLANS], tmp) {
7731                 struct nlattr *plan[NL80211_SCHED_SCAN_PLAN_MAX + 1];
7732
7733                 if (WARN_ON(i >= n_plans))
7734                         return -EINVAL;
7735
7736                 err = nla_parse_nested_deprecated(plan,
7737                                                   NL80211_SCHED_SCAN_PLAN_MAX,
7738                                                   attr, nl80211_plan_policy,
7739                                                   NULL);
7740                 if (err)
7741                         return err;
7742
7743                 if (!plan[NL80211_SCHED_SCAN_PLAN_INTERVAL])
7744                         return -EINVAL;
7745
7746                 request->scan_plans[i].interval =
7747                         nla_get_u32(plan[NL80211_SCHED_SCAN_PLAN_INTERVAL]);
7748                 if (!request->scan_plans[i].interval ||
7749                     request->scan_plans[i].interval >
7750                     wiphy->max_sched_scan_plan_interval)
7751                         return -EINVAL;
7752
7753                 if (plan[NL80211_SCHED_SCAN_PLAN_ITERATIONS]) {
7754                         request->scan_plans[i].iterations =
7755                                 nla_get_u32(plan[NL80211_SCHED_SCAN_PLAN_ITERATIONS]);
7756                         if (!request->scan_plans[i].iterations ||
7757                             (request->scan_plans[i].iterations >
7758                              wiphy->max_sched_scan_plan_iterations))
7759                                 return -EINVAL;
7760                 } else if (i < n_plans - 1) {
7761                         /*
7762                          * All scan plans but the last one must specify
7763                          * a finite number of iterations
7764                          */
7765                         return -EINVAL;
7766                 }
7767
7768                 i++;
7769         }
7770
7771         /*
7772          * The last scan plan must not specify the number of
7773          * iterations, it is supposed to run infinitely
7774          */
7775         if (request->scan_plans[n_plans - 1].iterations)
7776                 return  -EINVAL;
7777
7778         return 0;
7779 }
7780
7781 static int
7782 nl80211_parse_sched_scan_per_band_rssi(struct wiphy *wiphy,
7783                                        struct cfg80211_match_set *match_sets,
7784                                        struct nlattr *tb_band_rssi,
7785                                        s32 rssi_thold)
7786 {
7787         struct nlattr *attr;
7788         int i, tmp, ret = 0;
7789
7790         if (!wiphy_ext_feature_isset(wiphy,
7791                     NL80211_EXT_FEATURE_SCHED_SCAN_BAND_SPECIFIC_RSSI_THOLD)) {
7792                 if (tb_band_rssi)
7793                         ret = -EOPNOTSUPP;
7794                 else
7795                         for (i = 0; i < NUM_NL80211_BANDS; i++)
7796                                 match_sets->per_band_rssi_thold[i] =
7797                                         NL80211_SCAN_RSSI_THOLD_OFF;
7798                 return ret;
7799         }
7800
7801         for (i = 0; i < NUM_NL80211_BANDS; i++)
7802                 match_sets->per_band_rssi_thold[i] = rssi_thold;
7803
7804         nla_for_each_nested(attr, tb_band_rssi, tmp) {
7805                 enum nl80211_band band = nla_type(attr);
7806
7807                 if (band < 0 || band >= NUM_NL80211_BANDS)
7808                         return -EINVAL;
7809
7810                 match_sets->per_band_rssi_thold[band] = nla_get_s32(attr);
7811         }
7812
7813         return 0;
7814 }
7815
7816 static struct cfg80211_sched_scan_request *
7817 nl80211_parse_sched_scan(struct wiphy *wiphy, struct wireless_dev *wdev,
7818                          struct nlattr **attrs, int max_match_sets)
7819 {
7820         struct cfg80211_sched_scan_request *request;
7821         struct nlattr *attr;
7822         int err, tmp, n_ssids = 0, n_match_sets = 0, n_channels, i, n_plans = 0;
7823         enum nl80211_band band;
7824         size_t ie_len;
7825         struct nlattr *tb[NL80211_SCHED_SCAN_MATCH_ATTR_MAX + 1];
7826         s32 default_match_rssi = NL80211_SCAN_RSSI_THOLD_OFF;
7827
7828         if (attrs[NL80211_ATTR_SCAN_FREQUENCIES]) {
7829                 n_channels = validate_scan_freqs(
7830                                 attrs[NL80211_ATTR_SCAN_FREQUENCIES]);
7831                 if (!n_channels)
7832                         return ERR_PTR(-EINVAL);
7833         } else {
7834                 n_channels = ieee80211_get_num_supported_channels(wiphy);
7835         }
7836
7837         if (attrs[NL80211_ATTR_SCAN_SSIDS])
7838                 nla_for_each_nested(attr, attrs[NL80211_ATTR_SCAN_SSIDS],
7839                                     tmp)
7840                         n_ssids++;
7841
7842         if (n_ssids > wiphy->max_sched_scan_ssids)
7843                 return ERR_PTR(-EINVAL);
7844
7845         /*
7846          * First, count the number of 'real' matchsets. Due to an issue with
7847          * the old implementation, matchsets containing only the RSSI attribute
7848          * (NL80211_SCHED_SCAN_MATCH_ATTR_RSSI) are considered as the 'default'
7849          * RSSI for all matchsets, rather than their own matchset for reporting
7850          * all APs with a strong RSSI. This is needed to be compatible with
7851          * older userspace that treated a matchset with only the RSSI as the
7852          * global RSSI for all other matchsets - if there are other matchsets.
7853          */
7854         if (attrs[NL80211_ATTR_SCHED_SCAN_MATCH]) {
7855                 nla_for_each_nested(attr,
7856                                     attrs[NL80211_ATTR_SCHED_SCAN_MATCH],
7857                                     tmp) {
7858                         struct nlattr *rssi;
7859
7860                         err = nla_parse_nested_deprecated(tb,
7861                                                           NL80211_SCHED_SCAN_MATCH_ATTR_MAX,
7862                                                           attr,
7863                                                           nl80211_match_policy,
7864                                                           NULL);
7865                         if (err)
7866                                 return ERR_PTR(err);
7867
7868                         /* SSID and BSSID are mutually exclusive */
7869                         if (tb[NL80211_SCHED_SCAN_MATCH_ATTR_SSID] &&
7870                             tb[NL80211_SCHED_SCAN_MATCH_ATTR_BSSID])
7871                                 return ERR_PTR(-EINVAL);
7872
7873                         /* add other standalone attributes here */
7874                         if (tb[NL80211_SCHED_SCAN_MATCH_ATTR_SSID] ||
7875                             tb[NL80211_SCHED_SCAN_MATCH_ATTR_BSSID]) {
7876                                 n_match_sets++;
7877                                 continue;
7878                         }
7879                         rssi = tb[NL80211_SCHED_SCAN_MATCH_ATTR_RSSI];
7880                         if (rssi)
7881                                 default_match_rssi = nla_get_s32(rssi);
7882                 }
7883         }
7884
7885         /* However, if there's no other matchset, add the RSSI one */
7886         if (!n_match_sets && default_match_rssi != NL80211_SCAN_RSSI_THOLD_OFF)
7887                 n_match_sets = 1;
7888
7889         if (n_match_sets > max_match_sets)
7890                 return ERR_PTR(-EINVAL);
7891
7892         if (attrs[NL80211_ATTR_IE])
7893                 ie_len = nla_len(attrs[NL80211_ATTR_IE]);
7894         else
7895                 ie_len = 0;
7896
7897         if (ie_len > wiphy->max_sched_scan_ie_len)
7898                 return ERR_PTR(-EINVAL);
7899
7900         if (attrs[NL80211_ATTR_SCHED_SCAN_PLANS]) {
7901                 /*
7902                  * NL80211_ATTR_SCHED_SCAN_INTERVAL must not be specified since
7903                  * each scan plan already specifies its own interval
7904                  */
7905                 if (attrs[NL80211_ATTR_SCHED_SCAN_INTERVAL])
7906                         return ERR_PTR(-EINVAL);
7907
7908                 nla_for_each_nested(attr,
7909                                     attrs[NL80211_ATTR_SCHED_SCAN_PLANS], tmp)
7910                         n_plans++;
7911         } else {
7912                 /*
7913                  * The scan interval attribute is kept for backward
7914                  * compatibility. If no scan plans are specified and sched scan
7915                  * interval is specified, one scan plan will be set with this
7916                  * scan interval and infinite number of iterations.
7917                  */
7918                 if (!attrs[NL80211_ATTR_SCHED_SCAN_INTERVAL])
7919                         return ERR_PTR(-EINVAL);
7920
7921                 n_plans = 1;
7922         }
7923
7924         if (!n_plans || n_plans > wiphy->max_sched_scan_plans)
7925                 return ERR_PTR(-EINVAL);
7926
7927         if (!wiphy_ext_feature_isset(
7928                     wiphy, NL80211_EXT_FEATURE_SCHED_SCAN_RELATIVE_RSSI) &&
7929             (attrs[NL80211_ATTR_SCHED_SCAN_RELATIVE_RSSI] ||
7930              attrs[NL80211_ATTR_SCHED_SCAN_RSSI_ADJUST]))
7931                 return ERR_PTR(-EINVAL);
7932
7933         request = kzalloc(sizeof(*request)
7934                         + sizeof(*request->ssids) * n_ssids
7935                         + sizeof(*request->match_sets) * n_match_sets
7936                         + sizeof(*request->scan_plans) * n_plans
7937                         + sizeof(*request->channels) * n_channels
7938                         + ie_len, GFP_KERNEL);
7939         if (!request)
7940                 return ERR_PTR(-ENOMEM);
7941
7942         if (n_ssids)
7943                 request->ssids = (void *)&request->channels[n_channels];
7944         request->n_ssids = n_ssids;
7945         if (ie_len) {
7946                 if (n_ssids)
7947                         request->ie = (void *)(request->ssids + n_ssids);
7948                 else
7949                         request->ie = (void *)(request->channels + n_channels);
7950         }
7951
7952         if (n_match_sets) {
7953                 if (request->ie)
7954                         request->match_sets = (void *)(request->ie + ie_len);
7955                 else if (n_ssids)
7956                         request->match_sets =
7957                                 (void *)(request->ssids + n_ssids);
7958                 else
7959                         request->match_sets =
7960                                 (void *)(request->channels + n_channels);
7961         }
7962         request->n_match_sets = n_match_sets;
7963
7964         if (n_match_sets)
7965                 request->scan_plans = (void *)(request->match_sets +
7966                                                n_match_sets);
7967         else if (request->ie)
7968                 request->scan_plans = (void *)(request->ie + ie_len);
7969         else if (n_ssids)
7970                 request->scan_plans = (void *)(request->ssids + n_ssids);
7971         else
7972                 request->scan_plans = (void *)(request->channels + n_channels);
7973
7974         request->n_scan_plans = n_plans;
7975
7976         i = 0;
7977         if (attrs[NL80211_ATTR_SCAN_FREQUENCIES]) {
7978                 /* user specified, bail out if channel not found */
7979                 nla_for_each_nested(attr,
7980                                     attrs[NL80211_ATTR_SCAN_FREQUENCIES],
7981                                     tmp) {
7982                         struct ieee80211_channel *chan;
7983
7984                         chan = ieee80211_get_channel(wiphy, nla_get_u32(attr));
7985
7986                         if (!chan) {
7987                                 err = -EINVAL;
7988                                 goto out_free;
7989                         }
7990
7991                         /* ignore disabled channels */
7992                         if (chan->flags & IEEE80211_CHAN_DISABLED)
7993                                 continue;
7994
7995                         request->channels[i] = chan;
7996                         i++;
7997                 }
7998         } else {
7999                 /* all channels */
8000                 for (band = 0; band < NUM_NL80211_BANDS; band++) {
8001                         int j;
8002
8003                         if (!wiphy->bands[band])
8004                                 continue;
8005                         for (j = 0; j < wiphy->bands[band]->n_channels; j++) {
8006                                 struct ieee80211_channel *chan;
8007
8008                                 chan = &wiphy->bands[band]->channels[j];
8009
8010                                 if (chan->flags & IEEE80211_CHAN_DISABLED)
8011                                         continue;
8012
8013                                 request->channels[i] = chan;
8014                                 i++;
8015                         }
8016                 }
8017         }
8018
8019         if (!i) {
8020                 err = -EINVAL;
8021                 goto out_free;
8022         }
8023
8024         request->n_channels = i;
8025
8026         i = 0;
8027         if (n_ssids) {
8028                 nla_for_each_nested(attr, attrs[NL80211_ATTR_SCAN_SSIDS],
8029                                     tmp) {
8030                         if (nla_len(attr) > IEEE80211_MAX_SSID_LEN) {
8031                                 err = -EINVAL;
8032                                 goto out_free;
8033                         }
8034                         request->ssids[i].ssid_len = nla_len(attr);
8035                         memcpy(request->ssids[i].ssid, nla_data(attr),
8036                                nla_len(attr));
8037                         i++;
8038                 }
8039         }
8040
8041         i = 0;
8042         if (attrs[NL80211_ATTR_SCHED_SCAN_MATCH]) {
8043                 nla_for_each_nested(attr,
8044                                     attrs[NL80211_ATTR_SCHED_SCAN_MATCH],
8045                                     tmp) {
8046                         struct nlattr *ssid, *bssid, *rssi;
8047
8048                         err = nla_parse_nested_deprecated(tb,
8049                                                           NL80211_SCHED_SCAN_MATCH_ATTR_MAX,
8050                                                           attr,
8051                                                           nl80211_match_policy,
8052                                                           NULL);
8053                         if (err)
8054                                 goto out_free;
8055                         ssid = tb[NL80211_SCHED_SCAN_MATCH_ATTR_SSID];
8056                         bssid = tb[NL80211_SCHED_SCAN_MATCH_ATTR_BSSID];
8057
8058                         if (!ssid && !bssid) {
8059                                 i++;
8060                                 continue;
8061                         }
8062
8063                         if (WARN_ON(i >= n_match_sets)) {
8064                                 /* this indicates a programming error,
8065                                  * the loop above should have verified
8066                                  * things properly
8067                                  */
8068                                 err = -EINVAL;
8069                                 goto out_free;
8070                         }
8071
8072                         if (ssid) {
8073                                 if (nla_len(ssid) > IEEE80211_MAX_SSID_LEN) {
8074                                         err = -EINVAL;
8075                                         goto out_free;
8076                                 }
8077                                 memcpy(request->match_sets[i].ssid.ssid,
8078                                        nla_data(ssid), nla_len(ssid));
8079                                 request->match_sets[i].ssid.ssid_len =
8080                                         nla_len(ssid);
8081                         }
8082                         if (bssid) {
8083                                 if (nla_len(bssid) != ETH_ALEN) {
8084                                         err = -EINVAL;
8085                                         goto out_free;
8086                                 }
8087                                 memcpy(request->match_sets[i].bssid,
8088                                        nla_data(bssid), ETH_ALEN);
8089                         }
8090
8091                         /* special attribute - old implementation w/a */
8092                         request->match_sets[i].rssi_thold = default_match_rssi;
8093                         rssi = tb[NL80211_SCHED_SCAN_MATCH_ATTR_RSSI];
8094                         if (rssi)
8095                                 request->match_sets[i].rssi_thold =
8096                                         nla_get_s32(rssi);
8097
8098                         /* Parse per band RSSI attribute */
8099                         err = nl80211_parse_sched_scan_per_band_rssi(wiphy,
8100                                 &request->match_sets[i],
8101                                 tb[NL80211_SCHED_SCAN_MATCH_PER_BAND_RSSI],
8102                                 request->match_sets[i].rssi_thold);
8103                         if (err)
8104                                 goto out_free;
8105
8106                         i++;
8107                 }
8108
8109                 /* there was no other matchset, so the RSSI one is alone */
8110                 if (i == 0 && n_match_sets)
8111                         request->match_sets[0].rssi_thold = default_match_rssi;
8112
8113                 request->min_rssi_thold = INT_MAX;
8114                 for (i = 0; i < n_match_sets; i++)
8115                         request->min_rssi_thold =
8116                                 min(request->match_sets[i].rssi_thold,
8117                                     request->min_rssi_thold);
8118         } else {
8119                 request->min_rssi_thold = NL80211_SCAN_RSSI_THOLD_OFF;
8120         }
8121
8122         if (ie_len) {
8123                 request->ie_len = ie_len;
8124                 memcpy((void *)request->ie,
8125                        nla_data(attrs[NL80211_ATTR_IE]),
8126                        request->ie_len);
8127         }
8128
8129         err = nl80211_check_scan_flags(wiphy, wdev, request, attrs, true);
8130         if (err)
8131                 goto out_free;
8132
8133         if (attrs[NL80211_ATTR_SCHED_SCAN_DELAY])
8134                 request->delay =
8135                         nla_get_u32(attrs[NL80211_ATTR_SCHED_SCAN_DELAY]);
8136
8137         if (attrs[NL80211_ATTR_SCHED_SCAN_RELATIVE_RSSI]) {
8138                 request->relative_rssi = nla_get_s8(
8139                         attrs[NL80211_ATTR_SCHED_SCAN_RELATIVE_RSSI]);
8140                 request->relative_rssi_set = true;
8141         }
8142
8143         if (request->relative_rssi_set &&
8144             attrs[NL80211_ATTR_SCHED_SCAN_RSSI_ADJUST]) {
8145                 struct nl80211_bss_select_rssi_adjust *rssi_adjust;
8146
8147                 rssi_adjust = nla_data(
8148                         attrs[NL80211_ATTR_SCHED_SCAN_RSSI_ADJUST]);
8149                 request->rssi_adjust.band = rssi_adjust->band;
8150                 request->rssi_adjust.delta = rssi_adjust->delta;
8151                 if (!is_band_valid(wiphy, request->rssi_adjust.band)) {
8152                         err = -EINVAL;
8153                         goto out_free;
8154                 }
8155         }
8156
8157         err = nl80211_parse_sched_scan_plans(wiphy, n_plans, request, attrs);
8158         if (err)
8159                 goto out_free;
8160
8161         request->scan_start = jiffies;
8162
8163         return request;
8164
8165 out_free:
8166         kfree(request);
8167         return ERR_PTR(err);
8168 }
8169
8170 static int nl80211_start_sched_scan(struct sk_buff *skb,
8171                                     struct genl_info *info)
8172 {
8173         struct cfg80211_registered_device *rdev = info->user_ptr[0];
8174         struct net_device *dev = info->user_ptr[1];
8175         struct wireless_dev *wdev = dev->ieee80211_ptr;
8176         struct cfg80211_sched_scan_request *sched_scan_req;
8177         bool want_multi;
8178         int err;
8179
8180         if (!rdev->wiphy.max_sched_scan_reqs || !rdev->ops->sched_scan_start)
8181                 return -EOPNOTSUPP;
8182
8183         want_multi = info->attrs[NL80211_ATTR_SCHED_SCAN_MULTI];
8184         err = cfg80211_sched_scan_req_possible(rdev, want_multi);
8185         if (err)
8186                 return err;
8187
8188         sched_scan_req = nl80211_parse_sched_scan(&rdev->wiphy, wdev,
8189                                                   info->attrs,
8190                                                   rdev->wiphy.max_match_sets);
8191
8192         err = PTR_ERR_OR_ZERO(sched_scan_req);
8193         if (err)
8194                 goto out_err;
8195
8196         /* leave request id zero for legacy request
8197          * or if driver does not support multi-scheduled scan
8198          */
8199         if (want_multi && rdev->wiphy.max_sched_scan_reqs > 1) {
8200                 while (!sched_scan_req->reqid)
8201                         sched_scan_req->reqid = cfg80211_assign_cookie(rdev);
8202         }
8203
8204         err = rdev_sched_scan_start(rdev, dev, sched_scan_req);
8205         if (err)
8206                 goto out_free;
8207
8208         sched_scan_req->dev = dev;
8209         sched_scan_req->wiphy = &rdev->wiphy;
8210
8211         if (info->attrs[NL80211_ATTR_SOCKET_OWNER])
8212                 sched_scan_req->owner_nlportid = info->snd_portid;
8213
8214         cfg80211_add_sched_scan_req(rdev, sched_scan_req);
8215
8216         nl80211_send_sched_scan(sched_scan_req, NL80211_CMD_START_SCHED_SCAN);
8217         return 0;
8218
8219 out_free:
8220         kfree(sched_scan_req);
8221 out_err:
8222         return err;
8223 }
8224
8225 static int nl80211_stop_sched_scan(struct sk_buff *skb,
8226                                    struct genl_info *info)
8227 {
8228         struct cfg80211_sched_scan_request *req;
8229         struct cfg80211_registered_device *rdev = info->user_ptr[0];
8230         u64 cookie;
8231
8232         if (!rdev->wiphy.max_sched_scan_reqs || !rdev->ops->sched_scan_stop)
8233                 return -EOPNOTSUPP;
8234
8235         if (info->attrs[NL80211_ATTR_COOKIE]) {
8236                 cookie = nla_get_u64(info->attrs[NL80211_ATTR_COOKIE]);
8237                 return __cfg80211_stop_sched_scan(rdev, cookie, false);
8238         }
8239
8240         req = list_first_or_null_rcu(&rdev->sched_scan_req_list,
8241                                      struct cfg80211_sched_scan_request,
8242                                      list);
8243         if (!req || req->reqid ||
8244             (req->owner_nlportid &&
8245              req->owner_nlportid != info->snd_portid))
8246                 return -ENOENT;
8247
8248         return cfg80211_stop_sched_scan_req(rdev, req, false);
8249 }
8250
8251 static int nl80211_start_radar_detection(struct sk_buff *skb,
8252                                          struct genl_info *info)
8253 {
8254         struct cfg80211_registered_device *rdev = info->user_ptr[0];
8255         struct net_device *dev = info->user_ptr[1];
8256         struct wireless_dev *wdev = dev->ieee80211_ptr;
8257         struct wiphy *wiphy = wdev->wiphy;
8258         struct cfg80211_chan_def chandef;
8259         enum nl80211_dfs_regions dfs_region;
8260         unsigned int cac_time_ms;
8261         int err;
8262
8263         dfs_region = reg_get_dfs_region(wiphy);
8264         if (dfs_region == NL80211_DFS_UNSET)
8265                 return -EINVAL;
8266
8267         err = nl80211_parse_chandef(rdev, info, &chandef);
8268         if (err)
8269                 return err;
8270
8271         if (netif_carrier_ok(dev))
8272                 return -EBUSY;
8273
8274         if (wdev->cac_started)
8275                 return -EBUSY;
8276
8277         err = cfg80211_chandef_dfs_required(wiphy, &chandef, wdev->iftype);
8278         if (err < 0)
8279                 return err;
8280
8281         if (err == 0)
8282                 return -EINVAL;
8283
8284         if (!cfg80211_chandef_dfs_usable(wiphy, &chandef))
8285                 return -EINVAL;
8286
8287         /* CAC start is offloaded to HW and can't be started manually */
8288         if (wiphy_ext_feature_isset(wiphy, NL80211_EXT_FEATURE_DFS_OFFLOAD))
8289                 return -EOPNOTSUPP;
8290
8291         if (!rdev->ops->start_radar_detection)
8292                 return -EOPNOTSUPP;
8293
8294         cac_time_ms = cfg80211_chandef_dfs_cac_time(&rdev->wiphy, &chandef);
8295         if (WARN_ON(!cac_time_ms))
8296                 cac_time_ms = IEEE80211_DFS_MIN_CAC_TIME_MS;
8297
8298         err = rdev_start_radar_detection(rdev, dev, &chandef, cac_time_ms);
8299         if (!err) {
8300                 wdev->chandef = chandef;
8301                 wdev->cac_started = true;
8302                 wdev->cac_start_time = jiffies;
8303                 wdev->cac_time_ms = cac_time_ms;
8304         }
8305         return err;
8306 }
8307
8308 static int nl80211_notify_radar_detection(struct sk_buff *skb,
8309                                           struct genl_info *info)
8310 {
8311         struct cfg80211_registered_device *rdev = info->user_ptr[0];
8312         struct net_device *dev = info->user_ptr[1];
8313         struct wireless_dev *wdev = dev->ieee80211_ptr;
8314         struct wiphy *wiphy = wdev->wiphy;
8315         struct cfg80211_chan_def chandef;
8316         enum nl80211_dfs_regions dfs_region;
8317         int err;
8318
8319         dfs_region = reg_get_dfs_region(wiphy);
8320         if (dfs_region == NL80211_DFS_UNSET) {
8321                 GENL_SET_ERR_MSG(info,
8322                                  "DFS Region is not set. Unexpected Radar indication");
8323                 return -EINVAL;
8324         }
8325
8326         err = nl80211_parse_chandef(rdev, info, &chandef);
8327         if (err) {
8328                 GENL_SET_ERR_MSG(info, "Unable to extract chandef info");
8329                 return err;
8330         }
8331
8332         err = cfg80211_chandef_dfs_required(wiphy, &chandef, wdev->iftype);
8333         if (err < 0) {
8334                 GENL_SET_ERR_MSG(info, "chandef is invalid");
8335                 return err;
8336         }
8337
8338         if (err == 0) {
8339                 GENL_SET_ERR_MSG(info,
8340                                  "Unexpected Radar indication for chandef/iftype");
8341                 return -EINVAL;
8342         }
8343
8344         /* Do not process this notification if radar is already detected
8345          * by kernel on this channel, and return success.
8346          */
8347         if (chandef.chan->dfs_state == NL80211_DFS_UNAVAILABLE)
8348                 return 0;
8349
8350         cfg80211_set_dfs_state(wiphy, &chandef, NL80211_DFS_UNAVAILABLE);
8351
8352         cfg80211_sched_dfs_chan_update(rdev);
8353
8354         rdev->radar_chandef = chandef;
8355
8356         /* Propagate this notification to other radios as well */
8357         queue_work(cfg80211_wq, &rdev->propagate_radar_detect_wk);
8358
8359         return 0;
8360 }
8361
8362 static int nl80211_channel_switch(struct sk_buff *skb, struct genl_info *info)
8363 {
8364         struct cfg80211_registered_device *rdev = info->user_ptr[0];
8365         struct net_device *dev = info->user_ptr[1];
8366         struct wireless_dev *wdev = dev->ieee80211_ptr;
8367         struct cfg80211_csa_settings params;
8368         /* csa_attrs is defined static to avoid waste of stack size - this
8369          * function is called under RTNL lock, so this should not be a problem.
8370          */
8371         static struct nlattr *csa_attrs[NL80211_ATTR_MAX+1];
8372         int err;
8373         bool need_new_beacon = false;
8374         bool need_handle_dfs_flag = true;
8375         int len, i;
8376         u32 cs_count;
8377
8378         if (!rdev->ops->channel_switch ||
8379             !(rdev->wiphy.flags & WIPHY_FLAG_HAS_CHANNEL_SWITCH))
8380                 return -EOPNOTSUPP;
8381
8382         switch (dev->ieee80211_ptr->iftype) {
8383         case NL80211_IFTYPE_AP:
8384         case NL80211_IFTYPE_P2P_GO:
8385                 need_new_beacon = true;
8386                 /* For all modes except AP the handle_dfs flag needs to be
8387                  * supplied to tell the kernel that userspace will handle radar
8388                  * events when they happen. Otherwise a switch to a channel
8389                  * requiring DFS will be rejected.
8390                  */
8391                 need_handle_dfs_flag = false;
8392
8393                 /* useless if AP is not running */
8394                 if (!wdev->beacon_interval)
8395                         return -ENOTCONN;
8396                 break;
8397         case NL80211_IFTYPE_ADHOC:
8398                 if (!wdev->ssid_len)
8399                         return -ENOTCONN;
8400                 break;
8401         case NL80211_IFTYPE_MESH_POINT:
8402                 if (!wdev->mesh_id_len)
8403                         return -ENOTCONN;
8404                 break;
8405         default:
8406                 return -EOPNOTSUPP;
8407         }
8408
8409         memset(&params, 0, sizeof(params));
8410         params.beacon_csa.ftm_responder = -1;
8411
8412         if (!info->attrs[NL80211_ATTR_WIPHY_FREQ] ||
8413             !info->attrs[NL80211_ATTR_CH_SWITCH_COUNT])
8414                 return -EINVAL;
8415
8416         /* only important for AP, IBSS and mesh create IEs internally */
8417         if (need_new_beacon && !info->attrs[NL80211_ATTR_CSA_IES])
8418                 return -EINVAL;
8419
8420         /* Even though the attribute is u32, the specification says
8421          * u8, so let's make sure we don't overflow.
8422          */
8423         cs_count = nla_get_u32(info->attrs[NL80211_ATTR_CH_SWITCH_COUNT]);
8424         if (cs_count > 255)
8425                 return -EINVAL;
8426
8427         params.count = cs_count;
8428
8429         if (!need_new_beacon)
8430                 goto skip_beacons;
8431
8432         err = nl80211_parse_beacon(rdev, info->attrs, &params.beacon_after);
8433         if (err)
8434                 return err;
8435
8436         err = nla_parse_nested_deprecated(csa_attrs, NL80211_ATTR_MAX,
8437                                           info->attrs[NL80211_ATTR_CSA_IES],
8438                                           nl80211_policy, info->extack);
8439         if (err)
8440                 return err;
8441
8442         err = nl80211_parse_beacon(rdev, csa_attrs, &params.beacon_csa);
8443         if (err)
8444                 return err;
8445
8446         if (!csa_attrs[NL80211_ATTR_CSA_C_OFF_BEACON])
8447                 return -EINVAL;
8448
8449         len = nla_len(csa_attrs[NL80211_ATTR_CSA_C_OFF_BEACON]);
8450         if (!len || (len % sizeof(u16)))
8451                 return -EINVAL;
8452
8453         params.n_counter_offsets_beacon = len / sizeof(u16);
8454         if (rdev->wiphy.max_num_csa_counters &&
8455             (params.n_counter_offsets_beacon >
8456              rdev->wiphy.max_num_csa_counters))
8457                 return -EINVAL;
8458
8459         params.counter_offsets_beacon =
8460                 nla_data(csa_attrs[NL80211_ATTR_CSA_C_OFF_BEACON]);
8461
8462         /* sanity checks - counters should fit and be the same */
8463         for (i = 0; i < params.n_counter_offsets_beacon; i++) {
8464                 u16 offset = params.counter_offsets_beacon[i];
8465
8466                 if (offset >= params.beacon_csa.tail_len)
8467                         return -EINVAL;
8468
8469                 if (params.beacon_csa.tail[offset] != params.count)
8470                         return -EINVAL;
8471         }
8472
8473         if (csa_attrs[NL80211_ATTR_CSA_C_OFF_PRESP]) {
8474                 len = nla_len(csa_attrs[NL80211_ATTR_CSA_C_OFF_PRESP]);
8475                 if (!len || (len % sizeof(u16)))
8476                         return -EINVAL;
8477
8478                 params.n_counter_offsets_presp = len / sizeof(u16);
8479                 if (rdev->wiphy.max_num_csa_counters &&
8480                     (params.n_counter_offsets_presp >
8481                      rdev->wiphy.max_num_csa_counters))
8482                         return -EINVAL;
8483
8484                 params.counter_offsets_presp =
8485                         nla_data(csa_attrs[NL80211_ATTR_CSA_C_OFF_PRESP]);
8486
8487                 /* sanity checks - counters should fit and be the same */
8488                 for (i = 0; i < params.n_counter_offsets_presp; i++) {
8489                         u16 offset = params.counter_offsets_presp[i];
8490
8491                         if (offset >= params.beacon_csa.probe_resp_len)
8492                                 return -EINVAL;
8493
8494                         if (params.beacon_csa.probe_resp[offset] !=
8495                             params.count)
8496                                 return -EINVAL;
8497                 }
8498         }
8499
8500 skip_beacons:
8501         err = nl80211_parse_chandef(rdev, info, &params.chandef);
8502         if (err)
8503                 return err;
8504
8505         if (!cfg80211_reg_can_beacon_relax(&rdev->wiphy, &params.chandef,
8506                                            wdev->iftype))
8507                 return -EINVAL;
8508
8509         err = cfg80211_chandef_dfs_required(wdev->wiphy,
8510                                             &params.chandef,
8511                                             wdev->iftype);
8512         if (err < 0)
8513                 return err;
8514
8515         if (err > 0) {
8516                 params.radar_required = true;
8517                 if (need_handle_dfs_flag &&
8518                     !nla_get_flag(info->attrs[NL80211_ATTR_HANDLE_DFS])) {
8519                         return -EINVAL;
8520                 }
8521         }
8522
8523         if (info->attrs[NL80211_ATTR_CH_SWITCH_BLOCK_TX])
8524                 params.block_tx = true;
8525
8526         wdev_lock(wdev);
8527         err = rdev_channel_switch(rdev, dev, &params);
8528         wdev_unlock(wdev);
8529
8530         return err;
8531 }
8532
8533 static int nl80211_send_bss(struct sk_buff *msg, struct netlink_callback *cb,
8534                             u32 seq, int flags,
8535                             struct cfg80211_registered_device *rdev,
8536                             struct wireless_dev *wdev,
8537                             struct cfg80211_internal_bss *intbss)
8538 {
8539         struct cfg80211_bss *res = &intbss->pub;
8540         const struct cfg80211_bss_ies *ies;
8541         void *hdr;
8542         struct nlattr *bss;
8543
8544         ASSERT_WDEV_LOCK(wdev);
8545
8546         hdr = nl80211hdr_put(msg, NETLINK_CB(cb->skb).portid, seq, flags,
8547                              NL80211_CMD_NEW_SCAN_RESULTS);
8548         if (!hdr)
8549                 return -1;
8550
8551         genl_dump_check_consistent(cb, hdr);
8552
8553         if (nla_put_u32(msg, NL80211_ATTR_GENERATION, rdev->bss_generation))
8554                 goto nla_put_failure;
8555         if (wdev->netdev &&
8556             nla_put_u32(msg, NL80211_ATTR_IFINDEX, wdev->netdev->ifindex))
8557                 goto nla_put_failure;
8558         if (nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
8559                               NL80211_ATTR_PAD))
8560                 goto nla_put_failure;
8561
8562         bss = nla_nest_start_noflag(msg, NL80211_ATTR_BSS);
8563         if (!bss)
8564                 goto nla_put_failure;
8565         if ((!is_zero_ether_addr(res->bssid) &&
8566              nla_put(msg, NL80211_BSS_BSSID, ETH_ALEN, res->bssid)))
8567                 goto nla_put_failure;
8568
8569         rcu_read_lock();
8570         /* indicate whether we have probe response data or not */
8571         if (rcu_access_pointer(res->proberesp_ies) &&
8572             nla_put_flag(msg, NL80211_BSS_PRESP_DATA))
8573                 goto fail_unlock_rcu;
8574
8575         /* this pointer prefers to be pointed to probe response data
8576          * but is always valid
8577          */
8578         ies = rcu_dereference(res->ies);
8579         if (ies) {
8580                 if (nla_put_u64_64bit(msg, NL80211_BSS_TSF, ies->tsf,
8581                                       NL80211_BSS_PAD))
8582                         goto fail_unlock_rcu;
8583                 if (ies->len && nla_put(msg, NL80211_BSS_INFORMATION_ELEMENTS,
8584                                         ies->len, ies->data))
8585                         goto fail_unlock_rcu;
8586         }
8587
8588         /* and this pointer is always (unless driver didn't know) beacon data */
8589         ies = rcu_dereference(res->beacon_ies);
8590         if (ies && ies->from_beacon) {
8591                 if (nla_put_u64_64bit(msg, NL80211_BSS_BEACON_TSF, ies->tsf,
8592                                       NL80211_BSS_PAD))
8593                         goto fail_unlock_rcu;
8594                 if (ies->len && nla_put(msg, NL80211_BSS_BEACON_IES,
8595                                         ies->len, ies->data))
8596                         goto fail_unlock_rcu;
8597         }
8598         rcu_read_unlock();
8599
8600         if (res->beacon_interval &&
8601             nla_put_u16(msg, NL80211_BSS_BEACON_INTERVAL, res->beacon_interval))
8602                 goto nla_put_failure;
8603         if (nla_put_u16(msg, NL80211_BSS_CAPABILITY, res->capability) ||
8604             nla_put_u32(msg, NL80211_BSS_FREQUENCY, res->channel->center_freq) ||
8605             nla_put_u32(msg, NL80211_BSS_CHAN_WIDTH, res->scan_width) ||
8606             nla_put_u32(msg, NL80211_BSS_SEEN_MS_AGO,
8607                         jiffies_to_msecs(jiffies - intbss->ts)))
8608                 goto nla_put_failure;
8609
8610         if (intbss->parent_tsf &&
8611             (nla_put_u64_64bit(msg, NL80211_BSS_PARENT_TSF,
8612                                intbss->parent_tsf, NL80211_BSS_PAD) ||
8613              nla_put(msg, NL80211_BSS_PARENT_BSSID, ETH_ALEN,
8614                      intbss->parent_bssid)))
8615                 goto nla_put_failure;
8616
8617         if (intbss->ts_boottime &&
8618             nla_put_u64_64bit(msg, NL80211_BSS_LAST_SEEN_BOOTTIME,
8619                               intbss->ts_boottime, NL80211_BSS_PAD))
8620                 goto nla_put_failure;
8621
8622         if (!nl80211_put_signal(msg, intbss->pub.chains,
8623                                 intbss->pub.chain_signal,
8624                                 NL80211_BSS_CHAIN_SIGNAL))
8625                 goto nla_put_failure;
8626
8627         switch (rdev->wiphy.signal_type) {
8628         case CFG80211_SIGNAL_TYPE_MBM:
8629                 if (nla_put_u32(msg, NL80211_BSS_SIGNAL_MBM, res->signal))
8630                         goto nla_put_failure;
8631                 break;
8632         case CFG80211_SIGNAL_TYPE_UNSPEC:
8633                 if (nla_put_u8(msg, NL80211_BSS_SIGNAL_UNSPEC, res->signal))
8634                         goto nla_put_failure;
8635                 break;
8636         default:
8637                 break;
8638         }
8639
8640         switch (wdev->iftype) {
8641         case NL80211_IFTYPE_P2P_CLIENT:
8642         case NL80211_IFTYPE_STATION:
8643                 if (intbss == wdev->current_bss &&
8644                     nla_put_u32(msg, NL80211_BSS_STATUS,
8645                                 NL80211_BSS_STATUS_ASSOCIATED))
8646                         goto nla_put_failure;
8647                 break;
8648         case NL80211_IFTYPE_ADHOC:
8649                 if (intbss == wdev->current_bss &&
8650                     nla_put_u32(msg, NL80211_BSS_STATUS,
8651                                 NL80211_BSS_STATUS_IBSS_JOINED))
8652                         goto nla_put_failure;
8653                 break;
8654         default:
8655                 break;
8656         }
8657
8658         nla_nest_end(msg, bss);
8659
8660         genlmsg_end(msg, hdr);
8661         return 0;
8662
8663  fail_unlock_rcu:
8664         rcu_read_unlock();
8665  nla_put_failure:
8666         genlmsg_cancel(msg, hdr);
8667         return -EMSGSIZE;
8668 }
8669
8670 static int nl80211_dump_scan(struct sk_buff *skb, struct netlink_callback *cb)
8671 {
8672         struct cfg80211_registered_device *rdev;
8673         struct cfg80211_internal_bss *scan;
8674         struct wireless_dev *wdev;
8675         int start = cb->args[2], idx = 0;
8676         int err;
8677
8678         rtnl_lock();
8679         err = nl80211_prepare_wdev_dump(cb, &rdev, &wdev);
8680         if (err) {
8681                 rtnl_unlock();
8682                 return err;
8683         }
8684
8685         wdev_lock(wdev);
8686         spin_lock_bh(&rdev->bss_lock);
8687
8688         /*
8689          * dump_scan will be called multiple times to break up the scan results
8690          * into multiple messages.  It is unlikely that any more bss-es will be
8691          * expired after the first call, so only call only call this on the
8692          * first dump_scan invocation.
8693          */
8694         if (start == 0)
8695                 cfg80211_bss_expire(rdev);
8696
8697         cb->seq = rdev->bss_generation;
8698
8699         list_for_each_entry(scan, &rdev->bss_list, list) {
8700                 if (++idx <= start)
8701                         continue;
8702                 if (nl80211_send_bss(skb, cb,
8703                                 cb->nlh->nlmsg_seq, NLM_F_MULTI,
8704                                 rdev, wdev, scan) < 0) {
8705                         idx--;
8706                         break;
8707                 }
8708         }
8709
8710         spin_unlock_bh(&rdev->bss_lock);
8711         wdev_unlock(wdev);
8712
8713         cb->args[2] = idx;
8714         rtnl_unlock();
8715
8716         return skb->len;
8717 }
8718
8719 static int nl80211_send_survey(struct sk_buff *msg, u32 portid, u32 seq,
8720                                int flags, struct net_device *dev,
8721                                bool allow_radio_stats,
8722                                struct survey_info *survey)
8723 {
8724         void *hdr;
8725         struct nlattr *infoattr;
8726
8727         /* skip radio stats if userspace didn't request them */
8728         if (!survey->channel && !allow_radio_stats)
8729                 return 0;
8730
8731         hdr = nl80211hdr_put(msg, portid, seq, flags,
8732                              NL80211_CMD_NEW_SURVEY_RESULTS);
8733         if (!hdr)
8734                 return -ENOMEM;
8735
8736         if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex))
8737                 goto nla_put_failure;
8738
8739         infoattr = nla_nest_start_noflag(msg, NL80211_ATTR_SURVEY_INFO);
8740         if (!infoattr)
8741                 goto nla_put_failure;
8742
8743         if (survey->channel &&
8744             nla_put_u32(msg, NL80211_SURVEY_INFO_FREQUENCY,
8745                         survey->channel->center_freq))
8746                 goto nla_put_failure;
8747
8748         if ((survey->filled & SURVEY_INFO_NOISE_DBM) &&
8749             nla_put_u8(msg, NL80211_SURVEY_INFO_NOISE, survey->noise))
8750                 goto nla_put_failure;
8751         if ((survey->filled & SURVEY_INFO_IN_USE) &&
8752             nla_put_flag(msg, NL80211_SURVEY_INFO_IN_USE))
8753                 goto nla_put_failure;
8754         if ((survey->filled & SURVEY_INFO_TIME) &&
8755             nla_put_u64_64bit(msg, NL80211_SURVEY_INFO_TIME,
8756                         survey->time, NL80211_SURVEY_INFO_PAD))
8757                 goto nla_put_failure;
8758         if ((survey->filled & SURVEY_INFO_TIME_BUSY) &&
8759             nla_put_u64_64bit(msg, NL80211_SURVEY_INFO_TIME_BUSY,
8760                               survey->time_busy, NL80211_SURVEY_INFO_PAD))
8761                 goto nla_put_failure;
8762         if ((survey->filled & SURVEY_INFO_TIME_EXT_BUSY) &&
8763             nla_put_u64_64bit(msg, NL80211_SURVEY_INFO_TIME_EXT_BUSY,
8764                               survey->time_ext_busy, NL80211_SURVEY_INFO_PAD))
8765                 goto nla_put_failure;
8766         if ((survey->filled & SURVEY_INFO_TIME_RX) &&
8767             nla_put_u64_64bit(msg, NL80211_SURVEY_INFO_TIME_RX,
8768                               survey->time_rx, NL80211_SURVEY_INFO_PAD))
8769                 goto nla_put_failure;
8770         if ((survey->filled & SURVEY_INFO_TIME_TX) &&
8771             nla_put_u64_64bit(msg, NL80211_SURVEY_INFO_TIME_TX,
8772                               survey->time_tx, NL80211_SURVEY_INFO_PAD))
8773                 goto nla_put_failure;
8774         if ((survey->filled & SURVEY_INFO_TIME_SCAN) &&
8775             nla_put_u64_64bit(msg, NL80211_SURVEY_INFO_TIME_SCAN,
8776                               survey->time_scan, NL80211_SURVEY_INFO_PAD))
8777                 goto nla_put_failure;
8778
8779         nla_nest_end(msg, infoattr);
8780
8781         genlmsg_end(msg, hdr);
8782         return 0;
8783
8784  nla_put_failure:
8785         genlmsg_cancel(msg, hdr);
8786         return -EMSGSIZE;
8787 }
8788
8789 static int nl80211_dump_survey(struct sk_buff *skb, struct netlink_callback *cb)
8790 {
8791         struct nlattr **attrbuf;
8792         struct survey_info survey;
8793         struct cfg80211_registered_device *rdev;
8794         struct wireless_dev *wdev;
8795         int survey_idx = cb->args[2];
8796         int res;
8797         bool radio_stats;
8798
8799         attrbuf = kcalloc(NUM_NL80211_ATTR, sizeof(*attrbuf), GFP_KERNEL);
8800         if (!attrbuf)
8801                 return -ENOMEM;
8802
8803         rtnl_lock();
8804         res = nl80211_prepare_wdev_dump(cb, &rdev, &wdev);
8805         if (res)
8806                 goto out_err;
8807
8808         /* prepare_wdev_dump parsed the attributes */
8809         radio_stats = attrbuf[NL80211_ATTR_SURVEY_RADIO_STATS];
8810
8811         if (!wdev->netdev) {
8812                 res = -EINVAL;
8813                 goto out_err;
8814         }
8815
8816         if (!rdev->ops->dump_survey) {
8817                 res = -EOPNOTSUPP;
8818                 goto out_err;
8819         }
8820
8821         while (1) {
8822                 res = rdev_dump_survey(rdev, wdev->netdev, survey_idx, &survey);
8823                 if (res == -ENOENT)
8824                         break;
8825                 if (res)
8826                         goto out_err;
8827
8828                 /* don't send disabled channels, but do send non-channel data */
8829                 if (survey.channel &&
8830                     survey.channel->flags & IEEE80211_CHAN_DISABLED) {
8831                         survey_idx++;
8832                         continue;
8833                 }
8834
8835                 if (nl80211_send_survey(skb,
8836                                 NETLINK_CB(cb->skb).portid,
8837                                 cb->nlh->nlmsg_seq, NLM_F_MULTI,
8838                                 wdev->netdev, radio_stats, &survey) < 0)
8839                         goto out;
8840                 survey_idx++;
8841         }
8842
8843  out:
8844         cb->args[2] = survey_idx;
8845         res = skb->len;
8846  out_err:
8847         kfree(attrbuf);
8848         rtnl_unlock();
8849         return res;
8850 }
8851
8852 static bool nl80211_valid_wpa_versions(u32 wpa_versions)
8853 {
8854         return !(wpa_versions & ~(NL80211_WPA_VERSION_1 |
8855                                   NL80211_WPA_VERSION_2 |
8856                                   NL80211_WPA_VERSION_3));
8857 }
8858
8859 static int nl80211_authenticate(struct sk_buff *skb, struct genl_info *info)
8860 {
8861         struct cfg80211_registered_device *rdev = info->user_ptr[0];
8862         struct net_device *dev = info->user_ptr[1];
8863         struct ieee80211_channel *chan;
8864         const u8 *bssid, *ssid, *ie = NULL, *auth_data = NULL;
8865         int err, ssid_len, ie_len = 0, auth_data_len = 0;
8866         enum nl80211_auth_type auth_type;
8867         struct key_parse key;
8868         bool local_state_change;
8869
8870         if (!info->attrs[NL80211_ATTR_MAC])
8871                 return -EINVAL;
8872
8873         if (!info->attrs[NL80211_ATTR_AUTH_TYPE])
8874                 return -EINVAL;
8875
8876         if (!info->attrs[NL80211_ATTR_SSID])
8877                 return -EINVAL;
8878
8879         if (!info->attrs[NL80211_ATTR_WIPHY_FREQ])
8880                 return -EINVAL;
8881
8882         err = nl80211_parse_key(info, &key);
8883         if (err)
8884                 return err;
8885
8886         if (key.idx >= 0) {
8887                 if (key.type != -1 && key.type != NL80211_KEYTYPE_GROUP)
8888                         return -EINVAL;
8889                 if (!key.p.key || !key.p.key_len)
8890                         return -EINVAL;
8891                 if ((key.p.cipher != WLAN_CIPHER_SUITE_WEP40 ||
8892                      key.p.key_len != WLAN_KEY_LEN_WEP40) &&
8893                     (key.p.cipher != WLAN_CIPHER_SUITE_WEP104 ||
8894                      key.p.key_len != WLAN_KEY_LEN_WEP104))
8895                         return -EINVAL;
8896                 if (key.idx > 3)
8897                         return -EINVAL;
8898         } else {
8899                 key.p.key_len = 0;
8900                 key.p.key = NULL;
8901         }
8902
8903         if (key.idx >= 0) {
8904                 int i;
8905                 bool ok = false;
8906
8907                 for (i = 0; i < rdev->wiphy.n_cipher_suites; i++) {
8908                         if (key.p.cipher == rdev->wiphy.cipher_suites[i]) {
8909                                 ok = true;
8910                                 break;
8911                         }
8912                 }
8913                 if (!ok)
8914                         return -EINVAL;
8915         }
8916
8917         if (!rdev->ops->auth)
8918                 return -EOPNOTSUPP;
8919
8920         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
8921             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
8922                 return -EOPNOTSUPP;
8923
8924         bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
8925         chan = nl80211_get_valid_chan(&rdev->wiphy,
8926                                       info->attrs[NL80211_ATTR_WIPHY_FREQ]);
8927         if (!chan)
8928                 return -EINVAL;
8929
8930         ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
8931         ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
8932
8933         if (info->attrs[NL80211_ATTR_IE]) {
8934                 ie = nla_data(info->attrs[NL80211_ATTR_IE]);
8935                 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
8936         }
8937
8938         auth_type = nla_get_u32(info->attrs[NL80211_ATTR_AUTH_TYPE]);
8939         if (!nl80211_valid_auth_type(rdev, auth_type, NL80211_CMD_AUTHENTICATE))
8940                 return -EINVAL;
8941
8942         if ((auth_type == NL80211_AUTHTYPE_SAE ||
8943              auth_type == NL80211_AUTHTYPE_FILS_SK ||
8944              auth_type == NL80211_AUTHTYPE_FILS_SK_PFS ||
8945              auth_type == NL80211_AUTHTYPE_FILS_PK) &&
8946             !info->attrs[NL80211_ATTR_AUTH_DATA])
8947                 return -EINVAL;
8948
8949         if (info->attrs[NL80211_ATTR_AUTH_DATA]) {
8950                 if (auth_type != NL80211_AUTHTYPE_SAE &&
8951                     auth_type != NL80211_AUTHTYPE_FILS_SK &&
8952                     auth_type != NL80211_AUTHTYPE_FILS_SK_PFS &&
8953                     auth_type != NL80211_AUTHTYPE_FILS_PK)
8954                         return -EINVAL;
8955                 auth_data = nla_data(info->attrs[NL80211_ATTR_AUTH_DATA]);
8956                 auth_data_len = nla_len(info->attrs[NL80211_ATTR_AUTH_DATA]);
8957                 /* need to include at least Auth Transaction and Status Code */
8958                 if (auth_data_len < 4)
8959                         return -EINVAL;
8960         }
8961
8962         local_state_change = !!info->attrs[NL80211_ATTR_LOCAL_STATE_CHANGE];
8963
8964         /*
8965          * Since we no longer track auth state, ignore
8966          * requests to only change local state.
8967          */
8968         if (local_state_change)
8969                 return 0;
8970
8971         wdev_lock(dev->ieee80211_ptr);
8972         err = cfg80211_mlme_auth(rdev, dev, chan, auth_type, bssid,
8973                                  ssid, ssid_len, ie, ie_len,
8974                                  key.p.key, key.p.key_len, key.idx,
8975                                  auth_data, auth_data_len);
8976         wdev_unlock(dev->ieee80211_ptr);
8977         return err;
8978 }
8979
8980 static int validate_pae_over_nl80211(struct cfg80211_registered_device *rdev,
8981                                      struct genl_info *info)
8982 {
8983         if (!info->attrs[NL80211_ATTR_SOCKET_OWNER]) {
8984                 GENL_SET_ERR_MSG(info, "SOCKET_OWNER not set");
8985                 return -EINVAL;
8986         }
8987
8988         if (!rdev->ops->tx_control_port ||
8989             !wiphy_ext_feature_isset(&rdev->wiphy,
8990                                      NL80211_EXT_FEATURE_CONTROL_PORT_OVER_NL80211))
8991                 return -EOPNOTSUPP;
8992
8993         return 0;
8994 }
8995
8996 static int nl80211_crypto_settings(struct cfg80211_registered_device *rdev,
8997                                    struct genl_info *info,
8998                                    struct cfg80211_crypto_settings *settings,
8999                                    int cipher_limit)
9000 {
9001         memset(settings, 0, sizeof(*settings));
9002
9003         settings->control_port = info->attrs[NL80211_ATTR_CONTROL_PORT];
9004
9005         if (info->attrs[NL80211_ATTR_CONTROL_PORT_ETHERTYPE]) {
9006                 u16 proto;
9007
9008                 proto = nla_get_u16(
9009                         info->attrs[NL80211_ATTR_CONTROL_PORT_ETHERTYPE]);
9010                 settings->control_port_ethertype = cpu_to_be16(proto);
9011                 if (!(rdev->wiphy.flags & WIPHY_FLAG_CONTROL_PORT_PROTOCOL) &&
9012                     proto != ETH_P_PAE)
9013                         return -EINVAL;
9014                 if (info->attrs[NL80211_ATTR_CONTROL_PORT_NO_ENCRYPT])
9015                         settings->control_port_no_encrypt = true;
9016         } else
9017                 settings->control_port_ethertype = cpu_to_be16(ETH_P_PAE);
9018
9019         if (info->attrs[NL80211_ATTR_CONTROL_PORT_OVER_NL80211]) {
9020                 int r = validate_pae_over_nl80211(rdev, info);
9021
9022                 if (r < 0)
9023                         return r;
9024
9025                 settings->control_port_over_nl80211 = true;
9026         }
9027
9028         if (info->attrs[NL80211_ATTR_CIPHER_SUITES_PAIRWISE]) {
9029                 void *data;
9030                 int len, i;
9031
9032                 data = nla_data(info->attrs[NL80211_ATTR_CIPHER_SUITES_PAIRWISE]);
9033                 len = nla_len(info->attrs[NL80211_ATTR_CIPHER_SUITES_PAIRWISE]);
9034                 settings->n_ciphers_pairwise = len / sizeof(u32);
9035
9036                 if (len % sizeof(u32))
9037                         return -EINVAL;
9038
9039                 if (settings->n_ciphers_pairwise > cipher_limit)
9040                         return -EINVAL;
9041
9042                 memcpy(settings->ciphers_pairwise, data, len);
9043
9044                 for (i = 0; i < settings->n_ciphers_pairwise; i++)
9045                         if (!cfg80211_supported_cipher_suite(
9046                                         &rdev->wiphy,
9047                                         settings->ciphers_pairwise[i]))
9048                                 return -EINVAL;
9049         }
9050
9051         if (info->attrs[NL80211_ATTR_CIPHER_SUITE_GROUP]) {
9052                 settings->cipher_group =
9053                         nla_get_u32(info->attrs[NL80211_ATTR_CIPHER_SUITE_GROUP]);
9054                 if (!cfg80211_supported_cipher_suite(&rdev->wiphy,
9055                                                      settings->cipher_group))
9056                         return -EINVAL;
9057         }
9058
9059         if (info->attrs[NL80211_ATTR_WPA_VERSIONS]) {
9060                 settings->wpa_versions =
9061                         nla_get_u32(info->attrs[NL80211_ATTR_WPA_VERSIONS]);
9062                 if (!nl80211_valid_wpa_versions(settings->wpa_versions))
9063                         return -EINVAL;
9064         }
9065
9066         if (info->attrs[NL80211_ATTR_AKM_SUITES]) {
9067                 void *data;
9068                 int len;
9069
9070                 data = nla_data(info->attrs[NL80211_ATTR_AKM_SUITES]);
9071                 len = nla_len(info->attrs[NL80211_ATTR_AKM_SUITES]);
9072                 settings->n_akm_suites = len / sizeof(u32);
9073
9074                 if (len % sizeof(u32))
9075                         return -EINVAL;
9076
9077                 if (settings->n_akm_suites > NL80211_MAX_NR_AKM_SUITES)
9078                         return -EINVAL;
9079
9080                 memcpy(settings->akm_suites, data, len);
9081         }
9082
9083         if (info->attrs[NL80211_ATTR_PMK]) {
9084                 if (nla_len(info->attrs[NL80211_ATTR_PMK]) != WLAN_PMK_LEN)
9085                         return -EINVAL;
9086                 if (!wiphy_ext_feature_isset(&rdev->wiphy,
9087                                              NL80211_EXT_FEATURE_4WAY_HANDSHAKE_STA_PSK))
9088                         return -EINVAL;
9089                 settings->psk = nla_data(info->attrs[NL80211_ATTR_PMK]);
9090         }
9091
9092         if (info->attrs[NL80211_ATTR_SAE_PASSWORD]) {
9093                 if (!wiphy_ext_feature_isset(&rdev->wiphy,
9094                                              NL80211_EXT_FEATURE_SAE_OFFLOAD))
9095                         return -EINVAL;
9096                 settings->sae_pwd =
9097                         nla_data(info->attrs[NL80211_ATTR_SAE_PASSWORD]);
9098                 settings->sae_pwd_len =
9099                         nla_len(info->attrs[NL80211_ATTR_SAE_PASSWORD]);
9100         }
9101
9102         return 0;
9103 }
9104
9105 static int nl80211_associate(struct sk_buff *skb, struct genl_info *info)
9106 {
9107         struct cfg80211_registered_device *rdev = info->user_ptr[0];
9108         struct net_device *dev = info->user_ptr[1];
9109         struct ieee80211_channel *chan;
9110         struct cfg80211_assoc_request req = {};
9111         const u8 *bssid, *ssid;
9112         int err, ssid_len = 0;
9113
9114         if (dev->ieee80211_ptr->conn_owner_nlportid &&
9115             dev->ieee80211_ptr->conn_owner_nlportid != info->snd_portid)
9116                 return -EPERM;
9117
9118         if (!info->attrs[NL80211_ATTR_MAC] ||
9119             !info->attrs[NL80211_ATTR_SSID] ||
9120             !info->attrs[NL80211_ATTR_WIPHY_FREQ])
9121                 return -EINVAL;
9122
9123         if (!rdev->ops->assoc)
9124                 return -EOPNOTSUPP;
9125
9126         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
9127             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
9128                 return -EOPNOTSUPP;
9129
9130         bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
9131
9132         chan = nl80211_get_valid_chan(&rdev->wiphy,
9133                                       info->attrs[NL80211_ATTR_WIPHY_FREQ]);
9134         if (!chan)
9135                 return -EINVAL;
9136
9137         ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
9138         ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
9139
9140         if (info->attrs[NL80211_ATTR_IE]) {
9141                 req.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
9142                 req.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
9143         }
9144
9145         if (info->attrs[NL80211_ATTR_USE_MFP]) {
9146                 enum nl80211_mfp mfp =
9147                         nla_get_u32(info->attrs[NL80211_ATTR_USE_MFP]);
9148                 if (mfp == NL80211_MFP_REQUIRED)
9149                         req.use_mfp = true;
9150                 else if (mfp != NL80211_MFP_NO)
9151                         return -EINVAL;
9152         }
9153
9154         if (info->attrs[NL80211_ATTR_PREV_BSSID])
9155                 req.prev_bssid = nla_data(info->attrs[NL80211_ATTR_PREV_BSSID]);
9156
9157         if (nla_get_flag(info->attrs[NL80211_ATTR_DISABLE_HT]))
9158                 req.flags |= ASSOC_REQ_DISABLE_HT;
9159
9160         if (info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK])
9161                 memcpy(&req.ht_capa_mask,
9162                        nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]),
9163                        sizeof(req.ht_capa_mask));
9164
9165         if (info->attrs[NL80211_ATTR_HT_CAPABILITY]) {
9166                 if (!info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK])
9167                         return -EINVAL;
9168                 memcpy(&req.ht_capa,
9169                        nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]),
9170                        sizeof(req.ht_capa));
9171         }
9172
9173         if (nla_get_flag(info->attrs[NL80211_ATTR_DISABLE_VHT]))
9174                 req.flags |= ASSOC_REQ_DISABLE_VHT;
9175
9176         if (info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK])
9177                 memcpy(&req.vht_capa_mask,
9178                        nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK]),
9179                        sizeof(req.vht_capa_mask));
9180
9181         if (info->attrs[NL80211_ATTR_VHT_CAPABILITY]) {
9182                 if (!info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK])
9183                         return -EINVAL;
9184                 memcpy(&req.vht_capa,
9185                        nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY]),
9186                        sizeof(req.vht_capa));
9187         }
9188
9189         if (nla_get_flag(info->attrs[NL80211_ATTR_USE_RRM])) {
9190                 if (!((rdev->wiphy.features &
9191                         NL80211_FEATURE_DS_PARAM_SET_IE_IN_PROBES) &&
9192                        (rdev->wiphy.features & NL80211_FEATURE_QUIET)) &&
9193                     !wiphy_ext_feature_isset(&rdev->wiphy,
9194                                              NL80211_EXT_FEATURE_RRM))
9195                         return -EINVAL;
9196                 req.flags |= ASSOC_REQ_USE_RRM;
9197         }
9198
9199         if (info->attrs[NL80211_ATTR_FILS_KEK]) {
9200                 req.fils_kek = nla_data(info->attrs[NL80211_ATTR_FILS_KEK]);
9201                 req.fils_kek_len = nla_len(info->attrs[NL80211_ATTR_FILS_KEK]);
9202                 if (!info->attrs[NL80211_ATTR_FILS_NONCES])
9203                         return -EINVAL;
9204                 req.fils_nonces =
9205                         nla_data(info->attrs[NL80211_ATTR_FILS_NONCES]);
9206         }
9207
9208         err = nl80211_crypto_settings(rdev, info, &req.crypto, 1);
9209         if (!err) {
9210                 wdev_lock(dev->ieee80211_ptr);
9211
9212                 err = cfg80211_mlme_assoc(rdev, dev, chan, bssid,
9213                                           ssid, ssid_len, &req);
9214
9215                 if (!err && info->attrs[NL80211_ATTR_SOCKET_OWNER]) {
9216                         dev->ieee80211_ptr->conn_owner_nlportid =
9217                                 info->snd_portid;
9218                         memcpy(dev->ieee80211_ptr->disconnect_bssid,
9219                                bssid, ETH_ALEN);
9220                 }
9221
9222                 wdev_unlock(dev->ieee80211_ptr);
9223         }
9224
9225         return err;
9226 }
9227
9228 static int nl80211_deauthenticate(struct sk_buff *skb, struct genl_info *info)
9229 {
9230         struct cfg80211_registered_device *rdev = info->user_ptr[0];
9231         struct net_device *dev = info->user_ptr[1];
9232         const u8 *ie = NULL, *bssid;
9233         int ie_len = 0, err;
9234         u16 reason_code;
9235         bool local_state_change;
9236
9237         if (dev->ieee80211_ptr->conn_owner_nlportid &&
9238             dev->ieee80211_ptr->conn_owner_nlportid != info->snd_portid)
9239                 return -EPERM;
9240
9241         if (!info->attrs[NL80211_ATTR_MAC])
9242                 return -EINVAL;
9243
9244         if (!info->attrs[NL80211_ATTR_REASON_CODE])
9245                 return -EINVAL;
9246
9247         if (!rdev->ops->deauth)
9248                 return -EOPNOTSUPP;
9249
9250         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
9251             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
9252                 return -EOPNOTSUPP;
9253
9254         bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
9255
9256         reason_code = nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]);
9257         if (reason_code == 0) {
9258                 /* Reason Code 0 is reserved */
9259                 return -EINVAL;
9260         }
9261
9262         if (info->attrs[NL80211_ATTR_IE]) {
9263                 ie = nla_data(info->attrs[NL80211_ATTR_IE]);
9264                 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
9265         }
9266
9267         local_state_change = !!info->attrs[NL80211_ATTR_LOCAL_STATE_CHANGE];
9268
9269         wdev_lock(dev->ieee80211_ptr);
9270         err = cfg80211_mlme_deauth(rdev, dev, bssid, ie, ie_len, reason_code,
9271                                    local_state_change);
9272         wdev_unlock(dev->ieee80211_ptr);
9273         return err;
9274 }
9275
9276 static int nl80211_disassociate(struct sk_buff *skb, struct genl_info *info)
9277 {
9278         struct cfg80211_registered_device *rdev = info->user_ptr[0];
9279         struct net_device *dev = info->user_ptr[1];
9280         const u8 *ie = NULL, *bssid;
9281         int ie_len = 0, err;
9282         u16 reason_code;
9283         bool local_state_change;
9284
9285         if (dev->ieee80211_ptr->conn_owner_nlportid &&
9286             dev->ieee80211_ptr->conn_owner_nlportid != info->snd_portid)
9287                 return -EPERM;
9288
9289         if (!info->attrs[NL80211_ATTR_MAC])
9290                 return -EINVAL;
9291
9292         if (!info->attrs[NL80211_ATTR_REASON_CODE])
9293                 return -EINVAL;
9294
9295         if (!rdev->ops->disassoc)
9296                 return -EOPNOTSUPP;
9297
9298         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
9299             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
9300                 return -EOPNOTSUPP;
9301
9302         bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
9303
9304         reason_code = nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]);
9305         if (reason_code == 0) {
9306                 /* Reason Code 0 is reserved */
9307                 return -EINVAL;
9308         }
9309
9310         if (info->attrs[NL80211_ATTR_IE]) {
9311                 ie = nla_data(info->attrs[NL80211_ATTR_IE]);
9312                 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
9313         }
9314
9315         local_state_change = !!info->attrs[NL80211_ATTR_LOCAL_STATE_CHANGE];
9316
9317         wdev_lock(dev->ieee80211_ptr);
9318         err = cfg80211_mlme_disassoc(rdev, dev, bssid, ie, ie_len, reason_code,
9319                                      local_state_change);
9320         wdev_unlock(dev->ieee80211_ptr);
9321         return err;
9322 }
9323
9324 static bool
9325 nl80211_parse_mcast_rate(struct cfg80211_registered_device *rdev,
9326                          int mcast_rate[NUM_NL80211_BANDS],
9327                          int rateval)
9328 {
9329         struct wiphy *wiphy = &rdev->wiphy;
9330         bool found = false;
9331         int band, i;
9332
9333         for (band = 0; band < NUM_NL80211_BANDS; band++) {
9334                 struct ieee80211_supported_band *sband;
9335
9336                 sband = wiphy->bands[band];
9337                 if (!sband)
9338                         continue;
9339
9340                 for (i = 0; i < sband->n_bitrates; i++) {
9341                         if (sband->bitrates[i].bitrate == rateval) {
9342                                 mcast_rate[band] = i + 1;
9343                                 found = true;
9344                                 break;
9345                         }
9346                 }
9347         }
9348
9349         return found;
9350 }
9351
9352 static int nl80211_join_ibss(struct sk_buff *skb, struct genl_info *info)
9353 {
9354         struct cfg80211_registered_device *rdev = info->user_ptr[0];
9355         struct net_device *dev = info->user_ptr[1];
9356         struct cfg80211_ibss_params ibss;
9357         struct wiphy *wiphy;
9358         struct cfg80211_cached_keys *connkeys = NULL;
9359         int err;
9360
9361         memset(&ibss, 0, sizeof(ibss));
9362
9363         if (!info->attrs[NL80211_ATTR_SSID] ||
9364             !nla_len(info->attrs[NL80211_ATTR_SSID]))
9365                 return -EINVAL;
9366
9367         ibss.beacon_interval = 100;
9368
9369         if (info->attrs[NL80211_ATTR_BEACON_INTERVAL])
9370                 ibss.beacon_interval =
9371                         nla_get_u32(info->attrs[NL80211_ATTR_BEACON_INTERVAL]);
9372
9373         err = cfg80211_validate_beacon_int(rdev, NL80211_IFTYPE_ADHOC,
9374                                            ibss.beacon_interval);
9375         if (err)
9376                 return err;
9377
9378         if (!rdev->ops->join_ibss)
9379                 return -EOPNOTSUPP;
9380
9381         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_ADHOC)
9382                 return -EOPNOTSUPP;
9383
9384         wiphy = &rdev->wiphy;
9385
9386         if (info->attrs[NL80211_ATTR_MAC]) {
9387                 ibss.bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
9388
9389                 if (!is_valid_ether_addr(ibss.bssid))
9390                         return -EINVAL;
9391         }
9392         ibss.ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
9393         ibss.ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
9394
9395         if (info->attrs[NL80211_ATTR_IE]) {
9396                 ibss.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
9397                 ibss.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
9398         }
9399
9400         err = nl80211_parse_chandef(rdev, info, &ibss.chandef);
9401         if (err)
9402                 return err;
9403
9404         if (!cfg80211_reg_can_beacon(&rdev->wiphy, &ibss.chandef,
9405                                      NL80211_IFTYPE_ADHOC))
9406                 return -EINVAL;
9407
9408         switch (ibss.chandef.width) {
9409         case NL80211_CHAN_WIDTH_5:
9410         case NL80211_CHAN_WIDTH_10:
9411         case NL80211_CHAN_WIDTH_20_NOHT:
9412                 break;
9413         case NL80211_CHAN_WIDTH_20:
9414         case NL80211_CHAN_WIDTH_40:
9415                 if (!(rdev->wiphy.features & NL80211_FEATURE_HT_IBSS))
9416                         return -EINVAL;
9417                 break;
9418         case NL80211_CHAN_WIDTH_80:
9419         case NL80211_CHAN_WIDTH_80P80:
9420         case NL80211_CHAN_WIDTH_160:
9421                 if (!(rdev->wiphy.features & NL80211_FEATURE_HT_IBSS))
9422                         return -EINVAL;
9423                 if (!wiphy_ext_feature_isset(&rdev->wiphy,
9424                                              NL80211_EXT_FEATURE_VHT_IBSS))
9425                         return -EINVAL;
9426                 break;
9427         default:
9428                 return -EINVAL;
9429         }
9430
9431         ibss.channel_fixed = !!info->attrs[NL80211_ATTR_FREQ_FIXED];
9432         ibss.privacy = !!info->attrs[NL80211_ATTR_PRIVACY];
9433
9434         if (info->attrs[NL80211_ATTR_BSS_BASIC_RATES]) {
9435                 u8 *rates =
9436                         nla_data(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
9437                 int n_rates =
9438                         nla_len(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
9439                 struct ieee80211_supported_band *sband =
9440                         wiphy->bands[ibss.chandef.chan->band];
9441
9442                 err = ieee80211_get_ratemask(sband, rates, n_rates,
9443                                              &ibss.basic_rates);
9444                 if (err)
9445                         return err;
9446         }
9447
9448         if (info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK])
9449                 memcpy(&ibss.ht_capa_mask,
9450                        nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]),
9451                        sizeof(ibss.ht_capa_mask));
9452
9453         if (info->attrs[NL80211_ATTR_HT_CAPABILITY]) {
9454                 if (!info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK])
9455                         return -EINVAL;
9456                 memcpy(&ibss.ht_capa,
9457                        nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]),
9458                        sizeof(ibss.ht_capa));
9459         }
9460
9461         if (info->attrs[NL80211_ATTR_MCAST_RATE] &&
9462             !nl80211_parse_mcast_rate(rdev, ibss.mcast_rate,
9463                         nla_get_u32(info->attrs[NL80211_ATTR_MCAST_RATE])))
9464                 return -EINVAL;
9465
9466         if (ibss.privacy && info->attrs[NL80211_ATTR_KEYS]) {
9467                 bool no_ht = false;
9468
9469                 connkeys = nl80211_parse_connkeys(rdev, info, &no_ht);
9470                 if (IS_ERR(connkeys))
9471                         return PTR_ERR(connkeys);
9472
9473                 if ((ibss.chandef.width != NL80211_CHAN_WIDTH_20_NOHT) &&
9474                     no_ht) {
9475                         kzfree(connkeys);
9476                         return -EINVAL;
9477                 }
9478         }
9479
9480         ibss.control_port =
9481                 nla_get_flag(info->attrs[NL80211_ATTR_CONTROL_PORT]);
9482
9483         if (info->attrs[NL80211_ATTR_CONTROL_PORT_OVER_NL80211]) {
9484                 int r = validate_pae_over_nl80211(rdev, info);
9485
9486                 if (r < 0) {
9487                         kzfree(connkeys);
9488                         return r;
9489                 }
9490
9491                 ibss.control_port_over_nl80211 = true;
9492         }
9493
9494         ibss.userspace_handles_dfs =
9495                 nla_get_flag(info->attrs[NL80211_ATTR_HANDLE_DFS]);
9496
9497         wdev_lock(dev->ieee80211_ptr);
9498         err = __cfg80211_join_ibss(rdev, dev, &ibss, connkeys);
9499         if (err)
9500                 kzfree(connkeys);
9501         else if (info->attrs[NL80211_ATTR_SOCKET_OWNER])
9502                 dev->ieee80211_ptr->conn_owner_nlportid = info->snd_portid;
9503         wdev_unlock(dev->ieee80211_ptr);
9504
9505         return err;
9506 }
9507
9508 static int nl80211_leave_ibss(struct sk_buff *skb, struct genl_info *info)
9509 {
9510         struct cfg80211_registered_device *rdev = info->user_ptr[0];
9511         struct net_device *dev = info->user_ptr[1];
9512
9513         if (!rdev->ops->leave_ibss)
9514                 return -EOPNOTSUPP;
9515
9516         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_ADHOC)
9517                 return -EOPNOTSUPP;
9518
9519         return cfg80211_leave_ibss(rdev, dev, false);
9520 }
9521
9522 static int nl80211_set_mcast_rate(struct sk_buff *skb, struct genl_info *info)
9523 {
9524         struct cfg80211_registered_device *rdev = info->user_ptr[0];
9525         struct net_device *dev = info->user_ptr[1];
9526         int mcast_rate[NUM_NL80211_BANDS];
9527         u32 nla_rate;
9528         int err;
9529
9530         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_ADHOC &&
9531             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT &&
9532             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_OCB)
9533                 return -EOPNOTSUPP;
9534
9535         if (!rdev->ops->set_mcast_rate)
9536                 return -EOPNOTSUPP;
9537
9538         memset(mcast_rate, 0, sizeof(mcast_rate));
9539
9540         if (!info->attrs[NL80211_ATTR_MCAST_RATE])
9541                 return -EINVAL;
9542
9543         nla_rate = nla_get_u32(info->attrs[NL80211_ATTR_MCAST_RATE]);
9544         if (!nl80211_parse_mcast_rate(rdev, mcast_rate, nla_rate))
9545                 return -EINVAL;
9546
9547         err = rdev_set_mcast_rate(rdev, dev, mcast_rate);
9548
9549         return err;
9550 }
9551
9552 static struct sk_buff *
9553 __cfg80211_alloc_vendor_skb(struct cfg80211_registered_device *rdev,
9554                             struct wireless_dev *wdev, int approxlen,
9555                             u32 portid, u32 seq, enum nl80211_commands cmd,
9556                             enum nl80211_attrs attr,
9557                             const struct nl80211_vendor_cmd_info *info,
9558                             gfp_t gfp)
9559 {
9560         struct sk_buff *skb;
9561         void *hdr;
9562         struct nlattr *data;
9563
9564         skb = nlmsg_new(approxlen + 100, gfp);
9565         if (!skb)
9566                 return NULL;
9567
9568         hdr = nl80211hdr_put(skb, portid, seq, 0, cmd);
9569         if (!hdr) {
9570                 kfree_skb(skb);
9571                 return NULL;
9572         }
9573
9574         if (nla_put_u32(skb, NL80211_ATTR_WIPHY, rdev->wiphy_idx))
9575                 goto nla_put_failure;
9576
9577         if (info) {
9578                 if (nla_put_u32(skb, NL80211_ATTR_VENDOR_ID,
9579                                 info->vendor_id))
9580                         goto nla_put_failure;
9581                 if (nla_put_u32(skb, NL80211_ATTR_VENDOR_SUBCMD,
9582                                 info->subcmd))
9583                         goto nla_put_failure;
9584         }
9585
9586         if (wdev) {
9587                 if (nla_put_u64_64bit(skb, NL80211_ATTR_WDEV,
9588                                       wdev_id(wdev), NL80211_ATTR_PAD))
9589                         goto nla_put_failure;
9590                 if (wdev->netdev &&
9591                     nla_put_u32(skb, NL80211_ATTR_IFINDEX,
9592                                 wdev->netdev->ifindex))
9593                         goto nla_put_failure;
9594         }
9595
9596         data = nla_nest_start_noflag(skb, attr);
9597         if (!data)
9598                 goto nla_put_failure;
9599
9600         ((void **)skb->cb)[0] = rdev;
9601         ((void **)skb->cb)[1] = hdr;
9602         ((void **)skb->cb)[2] = data;
9603
9604         return skb;
9605
9606  nla_put_failure:
9607         kfree_skb(skb);
9608         return NULL;
9609 }
9610
9611 struct sk_buff *__cfg80211_alloc_event_skb(struct wiphy *wiphy,
9612                                            struct wireless_dev *wdev,
9613                                            enum nl80211_commands cmd,
9614                                            enum nl80211_attrs attr,
9615                                            unsigned int portid,
9616                                            int vendor_event_idx,
9617                                            int approxlen, gfp_t gfp)
9618 {
9619         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
9620         const struct nl80211_vendor_cmd_info *info;
9621
9622         switch (cmd) {
9623         case NL80211_CMD_TESTMODE:
9624                 if (WARN_ON(vendor_event_idx != -1))
9625                         return NULL;
9626                 info = NULL;
9627                 break;
9628         case NL80211_CMD_VENDOR:
9629                 if (WARN_ON(vendor_event_idx < 0 ||
9630                             vendor_event_idx >= wiphy->n_vendor_events))
9631                         return NULL;
9632                 info = &wiphy->vendor_events[vendor_event_idx];
9633                 break;
9634         default:
9635                 WARN_ON(1);
9636                 return NULL;
9637         }
9638
9639         return __cfg80211_alloc_vendor_skb(rdev, wdev, approxlen, portid, 0,
9640                                            cmd, attr, info, gfp);
9641 }
9642 EXPORT_SYMBOL(__cfg80211_alloc_event_skb);
9643
9644 void __cfg80211_send_event_skb(struct sk_buff *skb, gfp_t gfp)
9645 {
9646         struct cfg80211_registered_device *rdev = ((void **)skb->cb)[0];
9647         void *hdr = ((void **)skb->cb)[1];
9648         struct nlmsghdr *nlhdr = nlmsg_hdr(skb);
9649         struct nlattr *data = ((void **)skb->cb)[2];
9650         enum nl80211_multicast_groups mcgrp = NL80211_MCGRP_TESTMODE;
9651
9652         /* clear CB data for netlink core to own from now on */
9653         memset(skb->cb, 0, sizeof(skb->cb));
9654
9655         nla_nest_end(skb, data);
9656         genlmsg_end(skb, hdr);
9657
9658         if (nlhdr->nlmsg_pid) {
9659                 genlmsg_unicast(wiphy_net(&rdev->wiphy), skb,
9660                                 nlhdr->nlmsg_pid);
9661         } else {
9662                 if (data->nla_type == NL80211_ATTR_VENDOR_DATA)
9663                         mcgrp = NL80211_MCGRP_VENDOR;
9664
9665                 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy),
9666                                         skb, 0, mcgrp, gfp);
9667         }
9668 }
9669 EXPORT_SYMBOL(__cfg80211_send_event_skb);
9670
9671 #ifdef CONFIG_NL80211_TESTMODE
9672 static int nl80211_testmode_do(struct sk_buff *skb, struct genl_info *info)
9673 {
9674         struct cfg80211_registered_device *rdev = info->user_ptr[0];
9675         struct wireless_dev *wdev =
9676                 __cfg80211_wdev_from_attrs(genl_info_net(info), info->attrs);
9677         int err;
9678
9679         if (!rdev->ops->testmode_cmd)
9680                 return -EOPNOTSUPP;
9681
9682         if (IS_ERR(wdev)) {
9683                 err = PTR_ERR(wdev);
9684                 if (err != -EINVAL)
9685                         return err;
9686                 wdev = NULL;
9687         } else if (wdev->wiphy != &rdev->wiphy) {
9688                 return -EINVAL;
9689         }
9690
9691         if (!info->attrs[NL80211_ATTR_TESTDATA])
9692                 return -EINVAL;
9693
9694         rdev->cur_cmd_info = info;
9695         err = rdev_testmode_cmd(rdev, wdev,
9696                                 nla_data(info->attrs[NL80211_ATTR_TESTDATA]),
9697                                 nla_len(info->attrs[NL80211_ATTR_TESTDATA]));
9698         rdev->cur_cmd_info = NULL;
9699
9700         return err;
9701 }
9702
9703 static int nl80211_testmode_dump(struct sk_buff *skb,
9704                                  struct netlink_callback *cb)
9705 {
9706         struct cfg80211_registered_device *rdev;
9707         struct nlattr **attrbuf = NULL;
9708         int err;
9709         long phy_idx;
9710         void *data = NULL;
9711         int data_len = 0;
9712
9713         rtnl_lock();
9714
9715         if (cb->args[0]) {
9716                 /*
9717                  * 0 is a valid index, but not valid for args[0],
9718                  * so we need to offset by 1.
9719                  */
9720                 phy_idx = cb->args[0] - 1;
9721
9722                 rdev = cfg80211_rdev_by_wiphy_idx(phy_idx);
9723                 if (!rdev) {
9724                         err = -ENOENT;
9725                         goto out_err;
9726                 }
9727         } else {
9728                 attrbuf = kcalloc(NUM_NL80211_ATTR, sizeof(*attrbuf),
9729                                   GFP_KERNEL);
9730                 if (!attrbuf) {
9731                         err = -ENOMEM;
9732                         goto out_err;
9733                 }
9734
9735                 err = nlmsg_parse_deprecated(cb->nlh,
9736                                              GENL_HDRLEN + nl80211_fam.hdrsize,
9737                                              attrbuf, nl80211_fam.maxattr,
9738                                              nl80211_policy, NULL);
9739                 if (err)
9740                         goto out_err;
9741
9742                 rdev = __cfg80211_rdev_from_attrs(sock_net(skb->sk), attrbuf);
9743                 if (IS_ERR(rdev)) {
9744                         err = PTR_ERR(rdev);
9745                         goto out_err;
9746                 }
9747                 phy_idx = rdev->wiphy_idx;
9748
9749                 if (attrbuf[NL80211_ATTR_TESTDATA])
9750                         cb->args[1] = (long)attrbuf[NL80211_ATTR_TESTDATA];
9751         }
9752
9753         if (cb->args[1]) {
9754                 data = nla_data((void *)cb->args[1]);
9755                 data_len = nla_len((void *)cb->args[1]);
9756         }
9757
9758         if (!rdev->ops->testmode_dump) {
9759                 err = -EOPNOTSUPP;
9760                 goto out_err;
9761         }
9762
9763         while (1) {
9764                 void *hdr = nl80211hdr_put(skb, NETLINK_CB(cb->skb).portid,
9765                                            cb->nlh->nlmsg_seq, NLM_F_MULTI,
9766                                            NL80211_CMD_TESTMODE);
9767                 struct nlattr *tmdata;
9768
9769                 if (!hdr)
9770                         break;
9771
9772                 if (nla_put_u32(skb, NL80211_ATTR_WIPHY, phy_idx)) {
9773                         genlmsg_cancel(skb, hdr);
9774                         break;
9775                 }
9776
9777                 tmdata = nla_nest_start_noflag(skb, NL80211_ATTR_TESTDATA);
9778                 if (!tmdata) {
9779                         genlmsg_cancel(skb, hdr);
9780                         break;
9781                 }
9782                 err = rdev_testmode_dump(rdev, skb, cb, data, data_len);
9783                 nla_nest_end(skb, tmdata);
9784
9785                 if (err == -ENOBUFS || err == -ENOENT) {
9786                         genlmsg_cancel(skb, hdr);
9787                         break;
9788                 } else if (err) {
9789                         genlmsg_cancel(skb, hdr);
9790                         goto out_err;
9791                 }
9792
9793                 genlmsg_end(skb, hdr);
9794         }
9795
9796         err = skb->len;
9797         /* see above */
9798         cb->args[0] = phy_idx + 1;
9799  out_err:
9800         kfree(attrbuf);
9801         rtnl_unlock();
9802         return err;
9803 }
9804 #endif
9805
9806 static int nl80211_connect(struct sk_buff *skb, struct genl_info *info)
9807 {
9808         struct cfg80211_registered_device *rdev = info->user_ptr[0];
9809         struct net_device *dev = info->user_ptr[1];
9810         struct cfg80211_connect_params connect;
9811         struct wiphy *wiphy;
9812         struct cfg80211_cached_keys *connkeys = NULL;
9813         int err;
9814
9815         memset(&connect, 0, sizeof(connect));
9816
9817         if (!info->attrs[NL80211_ATTR_SSID] ||
9818             !nla_len(info->attrs[NL80211_ATTR_SSID]))
9819                 return -EINVAL;
9820
9821         if (info->attrs[NL80211_ATTR_AUTH_TYPE]) {
9822                 connect.auth_type =
9823                         nla_get_u32(info->attrs[NL80211_ATTR_AUTH_TYPE]);
9824                 if (!nl80211_valid_auth_type(rdev, connect.auth_type,
9825                                              NL80211_CMD_CONNECT))
9826                         return -EINVAL;
9827         } else
9828                 connect.auth_type = NL80211_AUTHTYPE_AUTOMATIC;
9829
9830         connect.privacy = info->attrs[NL80211_ATTR_PRIVACY];
9831
9832         if (info->attrs[NL80211_ATTR_WANT_1X_4WAY_HS] &&
9833             !wiphy_ext_feature_isset(&rdev->wiphy,
9834                                      NL80211_EXT_FEATURE_4WAY_HANDSHAKE_STA_1X))
9835                 return -EINVAL;
9836         connect.want_1x = info->attrs[NL80211_ATTR_WANT_1X_4WAY_HS];
9837
9838         err = nl80211_crypto_settings(rdev, info, &connect.crypto,
9839                                       NL80211_MAX_NR_CIPHER_SUITES);
9840         if (err)
9841                 return err;
9842
9843         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
9844             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
9845                 return -EOPNOTSUPP;
9846
9847         wiphy = &rdev->wiphy;
9848
9849         connect.bg_scan_period = -1;
9850         if (info->attrs[NL80211_ATTR_BG_SCAN_PERIOD] &&
9851                 (wiphy->flags & WIPHY_FLAG_SUPPORTS_FW_ROAM)) {
9852                 connect.bg_scan_period =
9853                         nla_get_u16(info->attrs[NL80211_ATTR_BG_SCAN_PERIOD]);
9854         }
9855
9856         if (info->attrs[NL80211_ATTR_MAC])
9857                 connect.bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
9858         else if (info->attrs[NL80211_ATTR_MAC_HINT])
9859                 connect.bssid_hint =
9860                         nla_data(info->attrs[NL80211_ATTR_MAC_HINT]);
9861         connect.ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
9862         connect.ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
9863
9864         if (info->attrs[NL80211_ATTR_IE]) {
9865                 connect.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
9866                 connect.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
9867         }
9868
9869         if (info->attrs[NL80211_ATTR_USE_MFP]) {
9870                 connect.mfp = nla_get_u32(info->attrs[NL80211_ATTR_USE_MFP]);
9871                 if (connect.mfp == NL80211_MFP_OPTIONAL &&
9872                     !wiphy_ext_feature_isset(&rdev->wiphy,
9873                                              NL80211_EXT_FEATURE_MFP_OPTIONAL))
9874                         return -EOPNOTSUPP;
9875         } else {
9876                 connect.mfp = NL80211_MFP_NO;
9877         }
9878
9879         if (info->attrs[NL80211_ATTR_PREV_BSSID])
9880                 connect.prev_bssid =
9881                         nla_data(info->attrs[NL80211_ATTR_PREV_BSSID]);
9882
9883         if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
9884                 connect.channel = nl80211_get_valid_chan(
9885                         wiphy, info->attrs[NL80211_ATTR_WIPHY_FREQ]);
9886                 if (!connect.channel)
9887                         return -EINVAL;
9888         } else if (info->attrs[NL80211_ATTR_WIPHY_FREQ_HINT]) {
9889                 connect.channel_hint = nl80211_get_valid_chan(
9890                         wiphy, info->attrs[NL80211_ATTR_WIPHY_FREQ_HINT]);
9891                 if (!connect.channel_hint)
9892                         return -EINVAL;
9893         }
9894
9895         if (connect.privacy && info->attrs[NL80211_ATTR_KEYS]) {
9896                 connkeys = nl80211_parse_connkeys(rdev, info, NULL);
9897                 if (IS_ERR(connkeys))
9898                         return PTR_ERR(connkeys);
9899         }
9900
9901         if (nla_get_flag(info->attrs[NL80211_ATTR_DISABLE_HT]))
9902                 connect.flags |= ASSOC_REQ_DISABLE_HT;
9903
9904         if (info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK])
9905                 memcpy(&connect.ht_capa_mask,
9906                        nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]),
9907                        sizeof(connect.ht_capa_mask));
9908
9909         if (info->attrs[NL80211_ATTR_HT_CAPABILITY]) {
9910                 if (!info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]) {
9911                         kzfree(connkeys);
9912                         return -EINVAL;
9913                 }
9914                 memcpy(&connect.ht_capa,
9915                        nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]),
9916                        sizeof(connect.ht_capa));
9917         }
9918
9919         if (nla_get_flag(info->attrs[NL80211_ATTR_DISABLE_VHT]))
9920                 connect.flags |= ASSOC_REQ_DISABLE_VHT;
9921
9922         if (info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK])
9923                 memcpy(&connect.vht_capa_mask,
9924                        nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK]),
9925                        sizeof(connect.vht_capa_mask));
9926
9927         if (info->attrs[NL80211_ATTR_VHT_CAPABILITY]) {
9928                 if (!info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK]) {
9929                         kzfree(connkeys);
9930                         return -EINVAL;
9931                 }
9932                 memcpy(&connect.vht_capa,
9933                        nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY]),
9934                        sizeof(connect.vht_capa));
9935         }
9936
9937         if (nla_get_flag(info->attrs[NL80211_ATTR_USE_RRM])) {
9938                 if (!((rdev->wiphy.features &
9939                         NL80211_FEATURE_DS_PARAM_SET_IE_IN_PROBES) &&
9940                        (rdev->wiphy.features & NL80211_FEATURE_QUIET)) &&
9941                     !wiphy_ext_feature_isset(&rdev->wiphy,
9942                                              NL80211_EXT_FEATURE_RRM)) {
9943                         kzfree(connkeys);
9944                         return -EINVAL;
9945                 }
9946                 connect.flags |= ASSOC_REQ_USE_RRM;
9947         }
9948
9949         connect.pbss = nla_get_flag(info->attrs[NL80211_ATTR_PBSS]);
9950         if (connect.pbss && !rdev->wiphy.bands[NL80211_BAND_60GHZ]) {
9951                 kzfree(connkeys);
9952                 return -EOPNOTSUPP;
9953         }
9954
9955         if (info->attrs[NL80211_ATTR_BSS_SELECT]) {
9956                 /* bss selection makes no sense if bssid is set */
9957                 if (connect.bssid) {
9958                         kzfree(connkeys);
9959                         return -EINVAL;
9960                 }
9961
9962                 err = parse_bss_select(info->attrs[NL80211_ATTR_BSS_SELECT],
9963                                        wiphy, &connect.bss_select);
9964                 if (err) {
9965                         kzfree(connkeys);
9966                         return err;
9967                 }
9968         }
9969
9970         if (wiphy_ext_feature_isset(&rdev->wiphy,
9971                                     NL80211_EXT_FEATURE_FILS_SK_OFFLOAD) &&
9972             info->attrs[NL80211_ATTR_FILS_ERP_USERNAME] &&
9973             info->attrs[NL80211_ATTR_FILS_ERP_REALM] &&
9974             info->attrs[NL80211_ATTR_FILS_ERP_NEXT_SEQ_NUM] &&
9975             info->attrs[NL80211_ATTR_FILS_ERP_RRK]) {
9976                 connect.fils_erp_username =
9977                         nla_data(info->attrs[NL80211_ATTR_FILS_ERP_USERNAME]);
9978                 connect.fils_erp_username_len =
9979                         nla_len(info->attrs[NL80211_ATTR_FILS_ERP_USERNAME]);
9980                 connect.fils_erp_realm =
9981                         nla_data(info->attrs[NL80211_ATTR_FILS_ERP_REALM]);
9982                 connect.fils_erp_realm_len =
9983                         nla_len(info->attrs[NL80211_ATTR_FILS_ERP_REALM]);
9984                 connect.fils_erp_next_seq_num =
9985                         nla_get_u16(
9986                            info->attrs[NL80211_ATTR_FILS_ERP_NEXT_SEQ_NUM]);
9987                 connect.fils_erp_rrk =
9988                         nla_data(info->attrs[NL80211_ATTR_FILS_ERP_RRK]);
9989                 connect.fils_erp_rrk_len =
9990                         nla_len(info->attrs[NL80211_ATTR_FILS_ERP_RRK]);
9991         } else if (info->attrs[NL80211_ATTR_FILS_ERP_USERNAME] ||
9992                    info->attrs[NL80211_ATTR_FILS_ERP_REALM] ||
9993                    info->attrs[NL80211_ATTR_FILS_ERP_NEXT_SEQ_NUM] ||
9994                    info->attrs[NL80211_ATTR_FILS_ERP_RRK]) {
9995                 kzfree(connkeys);
9996                 return -EINVAL;
9997         }
9998
9999         if (nla_get_flag(info->attrs[NL80211_ATTR_EXTERNAL_AUTH_SUPPORT])) {
10000                 if (!info->attrs[NL80211_ATTR_SOCKET_OWNER]) {
10001                         kzfree(connkeys);
10002                         GENL_SET_ERR_MSG(info,
10003                                          "external auth requires connection ownership");
10004                         return -EINVAL;
10005                 }
10006                 connect.flags |= CONNECT_REQ_EXTERNAL_AUTH_SUPPORT;
10007         }
10008
10009         wdev_lock(dev->ieee80211_ptr);
10010
10011         err = cfg80211_connect(rdev, dev, &connect, connkeys,
10012                                connect.prev_bssid);
10013         if (err)
10014                 kzfree(connkeys);
10015
10016         if (!err && info->attrs[NL80211_ATTR_SOCKET_OWNER]) {
10017                 dev->ieee80211_ptr->conn_owner_nlportid = info->snd_portid;
10018                 if (connect.bssid)
10019                         memcpy(dev->ieee80211_ptr->disconnect_bssid,
10020                                connect.bssid, ETH_ALEN);
10021                 else
10022                         memset(dev->ieee80211_ptr->disconnect_bssid,
10023                                0, ETH_ALEN);
10024         }
10025
10026         wdev_unlock(dev->ieee80211_ptr);
10027
10028         return err;
10029 }
10030
10031 static int nl80211_update_connect_params(struct sk_buff *skb,
10032                                          struct genl_info *info)
10033 {
10034         struct cfg80211_connect_params connect = {};
10035         struct cfg80211_registered_device *rdev = info->user_ptr[0];
10036         struct net_device *dev = info->user_ptr[1];
10037         struct wireless_dev *wdev = dev->ieee80211_ptr;
10038         bool fils_sk_offload;
10039         u32 auth_type;
10040         u32 changed = 0;
10041         int ret;
10042
10043         if (!rdev->ops->update_connect_params)
10044                 return -EOPNOTSUPP;
10045
10046         if (info->attrs[NL80211_ATTR_IE]) {
10047                 connect.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
10048                 connect.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
10049                 changed |= UPDATE_ASSOC_IES;
10050         }
10051
10052         fils_sk_offload = wiphy_ext_feature_isset(&rdev->wiphy,
10053                                                   NL80211_EXT_FEATURE_FILS_SK_OFFLOAD);
10054
10055         /*
10056          * when driver supports fils-sk offload all attributes must be
10057          * provided. So the else covers "fils-sk-not-all" and
10058          * "no-fils-sk-any".
10059          */
10060         if (fils_sk_offload &&
10061             info->attrs[NL80211_ATTR_FILS_ERP_USERNAME] &&
10062             info->attrs[NL80211_ATTR_FILS_ERP_REALM] &&
10063             info->attrs[NL80211_ATTR_FILS_ERP_NEXT_SEQ_NUM] &&
10064             info->attrs[NL80211_ATTR_FILS_ERP_RRK]) {
10065                 connect.fils_erp_username =
10066                         nla_data(info->attrs[NL80211_ATTR_FILS_ERP_USERNAME]);
10067                 connect.fils_erp_username_len =
10068                         nla_len(info->attrs[NL80211_ATTR_FILS_ERP_USERNAME]);
10069                 connect.fils_erp_realm =
10070                         nla_data(info->attrs[NL80211_ATTR_FILS_ERP_REALM]);
10071                 connect.fils_erp_realm_len =
10072                         nla_len(info->attrs[NL80211_ATTR_FILS_ERP_REALM]);
10073                 connect.fils_erp_next_seq_num =
10074                         nla_get_u16(
10075                            info->attrs[NL80211_ATTR_FILS_ERP_NEXT_SEQ_NUM]);
10076                 connect.fils_erp_rrk =
10077                         nla_data(info->attrs[NL80211_ATTR_FILS_ERP_RRK]);
10078                 connect.fils_erp_rrk_len =
10079                         nla_len(info->attrs[NL80211_ATTR_FILS_ERP_RRK]);
10080                 changed |= UPDATE_FILS_ERP_INFO;
10081         } else if (info->attrs[NL80211_ATTR_FILS_ERP_USERNAME] ||
10082                    info->attrs[NL80211_ATTR_FILS_ERP_REALM] ||
10083                    info->attrs[NL80211_ATTR_FILS_ERP_NEXT_SEQ_NUM] ||
10084                    info->attrs[NL80211_ATTR_FILS_ERP_RRK]) {
10085                 return -EINVAL;
10086         }
10087
10088         if (info->attrs[NL80211_ATTR_AUTH_TYPE]) {
10089                 auth_type = nla_get_u32(info->attrs[NL80211_ATTR_AUTH_TYPE]);
10090                 if (!nl80211_valid_auth_type(rdev, auth_type,
10091                                              NL80211_CMD_CONNECT))
10092                         return -EINVAL;
10093
10094                 if (auth_type == NL80211_AUTHTYPE_FILS_SK &&
10095                     fils_sk_offload && !(changed & UPDATE_FILS_ERP_INFO))
10096                         return -EINVAL;
10097
10098                 connect.auth_type = auth_type;
10099                 changed |= UPDATE_AUTH_TYPE;
10100         }
10101
10102         wdev_lock(dev->ieee80211_ptr);
10103         if (!wdev->current_bss)
10104                 ret = -ENOLINK;
10105         else
10106                 ret = rdev_update_connect_params(rdev, dev, &connect, changed);
10107         wdev_unlock(dev->ieee80211_ptr);
10108
10109         return ret;
10110 }
10111
10112 static int nl80211_disconnect(struct sk_buff *skb, struct genl_info *info)
10113 {
10114         struct cfg80211_registered_device *rdev = info->user_ptr[0];
10115         struct net_device *dev = info->user_ptr[1];
10116         u16 reason;
10117         int ret;
10118
10119         if (dev->ieee80211_ptr->conn_owner_nlportid &&
10120             dev->ieee80211_ptr->conn_owner_nlportid != info->snd_portid)
10121                 return -EPERM;
10122
10123         if (!info->attrs[NL80211_ATTR_REASON_CODE])
10124                 reason = WLAN_REASON_DEAUTH_LEAVING;
10125         else
10126                 reason = nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]);
10127
10128         if (reason == 0)
10129                 return -EINVAL;
10130
10131         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
10132             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
10133                 return -EOPNOTSUPP;
10134
10135         wdev_lock(dev->ieee80211_ptr);
10136         ret = cfg80211_disconnect(rdev, dev, reason, true);
10137         wdev_unlock(dev->ieee80211_ptr);
10138         return ret;
10139 }
10140
10141 static int nl80211_wiphy_netns(struct sk_buff *skb, struct genl_info *info)
10142 {
10143         struct cfg80211_registered_device *rdev = info->user_ptr[0];
10144         struct net *net;
10145         int err;
10146
10147         if (info->attrs[NL80211_ATTR_PID]) {
10148                 u32 pid = nla_get_u32(info->attrs[NL80211_ATTR_PID]);
10149
10150                 net = get_net_ns_by_pid(pid);
10151         } else if (info->attrs[NL80211_ATTR_NETNS_FD]) {
10152                 u32 fd = nla_get_u32(info->attrs[NL80211_ATTR_NETNS_FD]);
10153
10154                 net = get_net_ns_by_fd(fd);
10155         } else {
10156                 return -EINVAL;
10157         }
10158
10159         if (IS_ERR(net))
10160                 return PTR_ERR(net);
10161
10162         err = 0;
10163
10164         /* check if anything to do */
10165         if (!net_eq(wiphy_net(&rdev->wiphy), net))
10166                 err = cfg80211_switch_netns(rdev, net);
10167
10168         put_net(net);
10169         return err;
10170 }
10171
10172 static int nl80211_setdel_pmksa(struct sk_buff *skb, struct genl_info *info)
10173 {
10174         struct cfg80211_registered_device *rdev = info->user_ptr[0];
10175         int (*rdev_ops)(struct wiphy *wiphy, struct net_device *dev,
10176                         struct cfg80211_pmksa *pmksa) = NULL;
10177         struct net_device *dev = info->user_ptr[1];
10178         struct cfg80211_pmksa pmksa;
10179
10180         memset(&pmksa, 0, sizeof(struct cfg80211_pmksa));
10181
10182         if (!info->attrs[NL80211_ATTR_PMKID])
10183                 return -EINVAL;
10184
10185         pmksa.pmkid = nla_data(info->attrs[NL80211_ATTR_PMKID]);
10186
10187         if (info->attrs[NL80211_ATTR_MAC]) {
10188                 pmksa.bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
10189         } else if (info->attrs[NL80211_ATTR_SSID] &&
10190                    info->attrs[NL80211_ATTR_FILS_CACHE_ID] &&
10191                    (info->genlhdr->cmd == NL80211_CMD_DEL_PMKSA ||
10192                     info->attrs[NL80211_ATTR_PMK])) {
10193                 pmksa.ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
10194                 pmksa.ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
10195                 pmksa.cache_id =
10196                         nla_data(info->attrs[NL80211_ATTR_FILS_CACHE_ID]);
10197         } else {
10198                 return -EINVAL;
10199         }
10200         if (info->attrs[NL80211_ATTR_PMK]) {
10201                 pmksa.pmk = nla_data(info->attrs[NL80211_ATTR_PMK]);
10202                 pmksa.pmk_len = nla_len(info->attrs[NL80211_ATTR_PMK]);
10203         }
10204
10205         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
10206             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT &&
10207             !(dev->ieee80211_ptr->iftype == NL80211_IFTYPE_AP &&
10208               wiphy_ext_feature_isset(&rdev->wiphy,
10209                                       NL80211_EXT_FEATURE_AP_PMKSA_CACHING)))
10210                 return -EOPNOTSUPP;
10211
10212         switch (info->genlhdr->cmd) {
10213         case NL80211_CMD_SET_PMKSA:
10214                 rdev_ops = rdev->ops->set_pmksa;
10215                 break;
10216         case NL80211_CMD_DEL_PMKSA:
10217                 rdev_ops = rdev->ops->del_pmksa;
10218                 break;
10219         default:
10220                 WARN_ON(1);
10221                 break;
10222         }
10223
10224         if (!rdev_ops)
10225                 return -EOPNOTSUPP;
10226
10227         return rdev_ops(&rdev->wiphy, dev, &pmksa);
10228 }
10229
10230 static int nl80211_flush_pmksa(struct sk_buff *skb, struct genl_info *info)
10231 {
10232         struct cfg80211_registered_device *rdev = info->user_ptr[0];
10233         struct net_device *dev = info->user_ptr[1];
10234
10235         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
10236             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
10237                 return -EOPNOTSUPP;
10238
10239         if (!rdev->ops->flush_pmksa)
10240                 return -EOPNOTSUPP;
10241
10242         return rdev_flush_pmksa(rdev, dev);
10243 }
10244
10245 static int nl80211_tdls_mgmt(struct sk_buff *skb, struct genl_info *info)
10246 {
10247         struct cfg80211_registered_device *rdev = info->user_ptr[0];
10248         struct net_device *dev = info->user_ptr[1];
10249         u8 action_code, dialog_token;
10250         u32 peer_capability = 0;
10251         u16 status_code;
10252         u8 *peer;
10253         bool initiator;
10254
10255         if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS) ||
10256             !rdev->ops->tdls_mgmt)
10257                 return -EOPNOTSUPP;
10258
10259         if (!info->attrs[NL80211_ATTR_TDLS_ACTION] ||
10260             !info->attrs[NL80211_ATTR_STATUS_CODE] ||
10261             !info->attrs[NL80211_ATTR_TDLS_DIALOG_TOKEN] ||
10262             !info->attrs[NL80211_ATTR_IE] ||
10263             !info->attrs[NL80211_ATTR_MAC])
10264                 return -EINVAL;
10265
10266         peer = nla_data(info->attrs[NL80211_ATTR_MAC]);
10267         action_code = nla_get_u8(info->attrs[NL80211_ATTR_TDLS_ACTION]);
10268         status_code = nla_get_u16(info->attrs[NL80211_ATTR_STATUS_CODE]);
10269         dialog_token = nla_get_u8(info->attrs[NL80211_ATTR_TDLS_DIALOG_TOKEN]);
10270         initiator = nla_get_flag(info->attrs[NL80211_ATTR_TDLS_INITIATOR]);
10271         if (info->attrs[NL80211_ATTR_TDLS_PEER_CAPABILITY])
10272                 peer_capability =
10273                         nla_get_u32(info->attrs[NL80211_ATTR_TDLS_PEER_CAPABILITY]);
10274
10275         return rdev_tdls_mgmt(rdev, dev, peer, action_code,
10276                               dialog_token, status_code, peer_capability,
10277                               initiator,
10278                               nla_data(info->attrs[NL80211_ATTR_IE]),
10279                               nla_len(info->attrs[NL80211_ATTR_IE]));
10280 }
10281
10282 static int nl80211_tdls_oper(struct sk_buff *skb, struct genl_info *info)
10283 {
10284         struct cfg80211_registered_device *rdev = info->user_ptr[0];
10285         struct net_device *dev = info->user_ptr[1];
10286         enum nl80211_tdls_operation operation;
10287         u8 *peer;
10288
10289         if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS) ||
10290             !rdev->ops->tdls_oper)
10291                 return -EOPNOTSUPP;
10292
10293         if (!info->attrs[NL80211_ATTR_TDLS_OPERATION] ||
10294             !info->attrs[NL80211_ATTR_MAC])
10295                 return -EINVAL;
10296
10297         operation = nla_get_u8(info->attrs[NL80211_ATTR_TDLS_OPERATION]);
10298         peer = nla_data(info->attrs[NL80211_ATTR_MAC]);
10299
10300         return rdev_tdls_oper(rdev, dev, peer, operation);
10301 }
10302
10303 static int nl80211_remain_on_channel(struct sk_buff *skb,
10304                                      struct genl_info *info)
10305 {
10306         struct cfg80211_registered_device *rdev = info->user_ptr[0];
10307         struct wireless_dev *wdev = info->user_ptr[1];
10308         struct cfg80211_chan_def chandef;
10309         const struct cfg80211_chan_def *compat_chandef;
10310         struct sk_buff *msg;
10311         void *hdr;
10312         u64 cookie;
10313         u32 duration;
10314         int err;
10315
10316         if (!info->attrs[NL80211_ATTR_WIPHY_FREQ] ||
10317             !info->attrs[NL80211_ATTR_DURATION])
10318                 return -EINVAL;
10319
10320         duration = nla_get_u32(info->attrs[NL80211_ATTR_DURATION]);
10321
10322         if (!rdev->ops->remain_on_channel ||
10323             !(rdev->wiphy.flags & WIPHY_FLAG_HAS_REMAIN_ON_CHANNEL))
10324                 return -EOPNOTSUPP;
10325
10326         /*
10327          * We should be on that channel for at least a minimum amount of
10328          * time (10ms) but no longer than the driver supports.
10329          */
10330         if (duration < NL80211_MIN_REMAIN_ON_CHANNEL_TIME ||
10331             duration > rdev->wiphy.max_remain_on_channel_duration)
10332                 return -EINVAL;
10333
10334         err = nl80211_parse_chandef(rdev, info, &chandef);
10335         if (err)
10336                 return err;
10337
10338         wdev_lock(wdev);
10339         if (!cfg80211_off_channel_oper_allowed(wdev) &&
10340             !cfg80211_chandef_identical(&wdev->chandef, &chandef)) {
10341                 compat_chandef = cfg80211_chandef_compatible(&wdev->chandef,
10342                                                              &chandef);
10343                 if (compat_chandef != &chandef) {
10344                         wdev_unlock(wdev);
10345                         return -EBUSY;
10346                 }
10347         }
10348         wdev_unlock(wdev);
10349
10350         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
10351         if (!msg)
10352                 return -ENOMEM;
10353
10354         hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
10355                              NL80211_CMD_REMAIN_ON_CHANNEL);
10356         if (!hdr) {
10357                 err = -ENOBUFS;
10358                 goto free_msg;
10359         }
10360
10361         err = rdev_remain_on_channel(rdev, wdev, chandef.chan,
10362                                      duration, &cookie);
10363
10364         if (err)
10365                 goto free_msg;
10366
10367         if (nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, cookie,
10368                               NL80211_ATTR_PAD))
10369                 goto nla_put_failure;
10370
10371         genlmsg_end(msg, hdr);
10372
10373         return genlmsg_reply(msg, info);
10374
10375  nla_put_failure:
10376         err = -ENOBUFS;
10377  free_msg:
10378         nlmsg_free(msg);
10379         return err;
10380 }
10381
10382 static int nl80211_cancel_remain_on_channel(struct sk_buff *skb,
10383                                             struct genl_info *info)
10384 {
10385         struct cfg80211_registered_device *rdev = info->user_ptr[0];
10386         struct wireless_dev *wdev = info->user_ptr[1];
10387         u64 cookie;
10388
10389         if (!info->attrs[NL80211_ATTR_COOKIE])
10390                 return -EINVAL;
10391
10392         if (!rdev->ops->cancel_remain_on_channel)
10393                 return -EOPNOTSUPP;
10394
10395         cookie = nla_get_u64(info->attrs[NL80211_ATTR_COOKIE]);
10396
10397         return rdev_cancel_remain_on_channel(rdev, wdev, cookie);
10398 }
10399
10400 static int nl80211_set_tx_bitrate_mask(struct sk_buff *skb,
10401                                        struct genl_info *info)
10402 {
10403         struct cfg80211_bitrate_mask mask;
10404         struct cfg80211_registered_device *rdev = info->user_ptr[0];
10405         struct net_device *dev = info->user_ptr[1];
10406         int err;
10407
10408         if (!rdev->ops->set_bitrate_mask)
10409                 return -EOPNOTSUPP;
10410
10411         err = nl80211_parse_tx_bitrate_mask(info, &mask);
10412         if (err)
10413                 return err;
10414
10415         return rdev_set_bitrate_mask(rdev, dev, NULL, &mask);
10416 }
10417
10418 static int nl80211_register_mgmt(struct sk_buff *skb, struct genl_info *info)
10419 {
10420         struct cfg80211_registered_device *rdev = info->user_ptr[0];
10421         struct wireless_dev *wdev = info->user_ptr[1];
10422         u16 frame_type = IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_ACTION;
10423
10424         if (!info->attrs[NL80211_ATTR_FRAME_MATCH])
10425                 return -EINVAL;
10426
10427         if (info->attrs[NL80211_ATTR_FRAME_TYPE])
10428                 frame_type = nla_get_u16(info->attrs[NL80211_ATTR_FRAME_TYPE]);
10429
10430         switch (wdev->iftype) {
10431         case NL80211_IFTYPE_STATION:
10432         case NL80211_IFTYPE_ADHOC:
10433         case NL80211_IFTYPE_P2P_CLIENT:
10434         case NL80211_IFTYPE_AP:
10435         case NL80211_IFTYPE_AP_VLAN:
10436         case NL80211_IFTYPE_MESH_POINT:
10437         case NL80211_IFTYPE_P2P_GO:
10438         case NL80211_IFTYPE_P2P_DEVICE:
10439                 break;
10440         case NL80211_IFTYPE_NAN:
10441         default:
10442                 return -EOPNOTSUPP;
10443         }
10444
10445         /* not much point in registering if we can't reply */
10446         if (!rdev->ops->mgmt_tx)
10447                 return -EOPNOTSUPP;
10448
10449         return cfg80211_mlme_register_mgmt(wdev, info->snd_portid, frame_type,
10450                         nla_data(info->attrs[NL80211_ATTR_FRAME_MATCH]),
10451                         nla_len(info->attrs[NL80211_ATTR_FRAME_MATCH]));
10452 }
10453
10454 static int nl80211_tx_mgmt(struct sk_buff *skb, struct genl_info *info)
10455 {
10456         struct cfg80211_registered_device *rdev = info->user_ptr[0];
10457         struct wireless_dev *wdev = info->user_ptr[1];
10458         struct cfg80211_chan_def chandef;
10459         int err;
10460         void *hdr = NULL;
10461         u64 cookie;
10462         struct sk_buff *msg = NULL;
10463         struct cfg80211_mgmt_tx_params params = {
10464                 .dont_wait_for_ack =
10465                         info->attrs[NL80211_ATTR_DONT_WAIT_FOR_ACK],
10466         };
10467
10468         if (!info->attrs[NL80211_ATTR_FRAME])
10469                 return -EINVAL;
10470
10471         if (!rdev->ops->mgmt_tx)
10472                 return -EOPNOTSUPP;
10473
10474         switch (wdev->iftype) {
10475         case NL80211_IFTYPE_P2P_DEVICE:
10476                 if (!info->attrs[NL80211_ATTR_WIPHY_FREQ])
10477                         return -EINVAL;
10478         case NL80211_IFTYPE_STATION:
10479         case NL80211_IFTYPE_ADHOC:
10480         case NL80211_IFTYPE_P2P_CLIENT:
10481         case NL80211_IFTYPE_AP:
10482         case NL80211_IFTYPE_AP_VLAN:
10483         case NL80211_IFTYPE_MESH_POINT:
10484         case NL80211_IFTYPE_P2P_GO:
10485                 break;
10486         case NL80211_IFTYPE_NAN:
10487         default:
10488                 return -EOPNOTSUPP;
10489         }
10490
10491         if (info->attrs[NL80211_ATTR_DURATION]) {
10492                 if (!(rdev->wiphy.flags & WIPHY_FLAG_OFFCHAN_TX))
10493                         return -EINVAL;
10494                 params.wait = nla_get_u32(info->attrs[NL80211_ATTR_DURATION]);
10495
10496                 /*
10497                  * We should wait on the channel for at least a minimum amount
10498                  * of time (10ms) but no longer than the driver supports.
10499                  */
10500                 if (params.wait < NL80211_MIN_REMAIN_ON_CHANNEL_TIME ||
10501                     params.wait > rdev->wiphy.max_remain_on_channel_duration)
10502                         return -EINVAL;
10503         }
10504
10505         params.offchan = info->attrs[NL80211_ATTR_OFFCHANNEL_TX_OK];
10506
10507         if (params.offchan && !(rdev->wiphy.flags & WIPHY_FLAG_OFFCHAN_TX))
10508                 return -EINVAL;
10509
10510         params.no_cck = nla_get_flag(info->attrs[NL80211_ATTR_TX_NO_CCK_RATE]);
10511
10512         /* get the channel if any has been specified, otherwise pass NULL to
10513          * the driver. The latter will use the current one
10514          */
10515         chandef.chan = NULL;
10516         if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
10517                 err = nl80211_parse_chandef(rdev, info, &chandef);
10518                 if (err)
10519                         return err;
10520         }
10521
10522         if (!chandef.chan && params.offchan)
10523                 return -EINVAL;
10524
10525         wdev_lock(wdev);
10526         if (params.offchan && !cfg80211_off_channel_oper_allowed(wdev)) {
10527                 wdev_unlock(wdev);
10528                 return -EBUSY;
10529         }
10530         wdev_unlock(wdev);
10531
10532         params.buf = nla_data(info->attrs[NL80211_ATTR_FRAME]);
10533         params.len = nla_len(info->attrs[NL80211_ATTR_FRAME]);
10534
10535         if (info->attrs[NL80211_ATTR_CSA_C_OFFSETS_TX]) {
10536                 int len = nla_len(info->attrs[NL80211_ATTR_CSA_C_OFFSETS_TX]);
10537                 int i;
10538
10539                 if (len % sizeof(u16))
10540                         return -EINVAL;
10541
10542                 params.n_csa_offsets = len / sizeof(u16);
10543                 params.csa_offsets =
10544                         nla_data(info->attrs[NL80211_ATTR_CSA_C_OFFSETS_TX]);
10545
10546                 /* check that all the offsets fit the frame */
10547                 for (i = 0; i < params.n_csa_offsets; i++) {
10548                         if (params.csa_offsets[i] >= params.len)
10549                                 return -EINVAL;
10550                 }
10551         }
10552
10553         if (!params.dont_wait_for_ack) {
10554                 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
10555                 if (!msg)
10556                         return -ENOMEM;
10557
10558                 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
10559                                      NL80211_CMD_FRAME);
10560                 if (!hdr) {
10561                         err = -ENOBUFS;
10562                         goto free_msg;
10563                 }
10564         }
10565
10566         params.chan = chandef.chan;
10567         err = cfg80211_mlme_mgmt_tx(rdev, wdev, &params, &cookie);
10568         if (err)
10569                 goto free_msg;
10570
10571         if (msg) {
10572                 if (nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, cookie,
10573                                       NL80211_ATTR_PAD))
10574                         goto nla_put_failure;
10575
10576                 genlmsg_end(msg, hdr);
10577                 return genlmsg_reply(msg, info);
10578         }
10579
10580         return 0;
10581
10582  nla_put_failure:
10583         err = -ENOBUFS;
10584  free_msg:
10585         nlmsg_free(msg);
10586         return err;
10587 }
10588
10589 static int nl80211_tx_mgmt_cancel_wait(struct sk_buff *skb, struct genl_info *info)
10590 {
10591         struct cfg80211_registered_device *rdev = info->user_ptr[0];
10592         struct wireless_dev *wdev = info->user_ptr[1];
10593         u64 cookie;
10594
10595         if (!info->attrs[NL80211_ATTR_COOKIE])
10596                 return -EINVAL;
10597
10598         if (!rdev->ops->mgmt_tx_cancel_wait)
10599                 return -EOPNOTSUPP;
10600
10601         switch (wdev->iftype) {
10602         case NL80211_IFTYPE_STATION:
10603         case NL80211_IFTYPE_ADHOC:
10604         case NL80211_IFTYPE_P2P_CLIENT:
10605         case NL80211_IFTYPE_AP:
10606         case NL80211_IFTYPE_AP_VLAN:
10607         case NL80211_IFTYPE_P2P_GO:
10608         case NL80211_IFTYPE_P2P_DEVICE:
10609                 break;
10610         case NL80211_IFTYPE_NAN:
10611         default:
10612                 return -EOPNOTSUPP;
10613         }
10614
10615         cookie = nla_get_u64(info->attrs[NL80211_ATTR_COOKIE]);
10616
10617         return rdev_mgmt_tx_cancel_wait(rdev, wdev, cookie);
10618 }
10619
10620 static int nl80211_set_power_save(struct sk_buff *skb, struct genl_info *info)
10621 {
10622         struct cfg80211_registered_device *rdev = info->user_ptr[0];
10623         struct wireless_dev *wdev;
10624         struct net_device *dev = info->user_ptr[1];
10625         u8 ps_state;
10626         bool state;
10627         int err;
10628
10629         if (!info->attrs[NL80211_ATTR_PS_STATE])
10630                 return -EINVAL;
10631
10632         ps_state = nla_get_u32(info->attrs[NL80211_ATTR_PS_STATE]);
10633
10634         wdev = dev->ieee80211_ptr;
10635
10636         if (!rdev->ops->set_power_mgmt)
10637                 return -EOPNOTSUPP;
10638
10639         state = (ps_state == NL80211_PS_ENABLED) ? true : false;
10640
10641         if (state == wdev->ps)
10642                 return 0;
10643
10644         err = rdev_set_power_mgmt(rdev, dev, state, wdev->ps_timeout);
10645         if (!err)
10646                 wdev->ps = state;
10647         return err;
10648 }
10649
10650 static int nl80211_get_power_save(struct sk_buff *skb, struct genl_info *info)
10651 {
10652         struct cfg80211_registered_device *rdev = info->user_ptr[0];
10653         enum nl80211_ps_state ps_state;
10654         struct wireless_dev *wdev;
10655         struct net_device *dev = info->user_ptr[1];
10656         struct sk_buff *msg;
10657         void *hdr;
10658         int err;
10659
10660         wdev = dev->ieee80211_ptr;
10661
10662         if (!rdev->ops->set_power_mgmt)
10663                 return -EOPNOTSUPP;
10664
10665         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
10666         if (!msg)
10667                 return -ENOMEM;
10668
10669         hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
10670                              NL80211_CMD_GET_POWER_SAVE);
10671         if (!hdr) {
10672                 err = -ENOBUFS;
10673                 goto free_msg;
10674         }
10675
10676         if (wdev->ps)
10677                 ps_state = NL80211_PS_ENABLED;
10678         else
10679                 ps_state = NL80211_PS_DISABLED;
10680
10681         if (nla_put_u32(msg, NL80211_ATTR_PS_STATE, ps_state))
10682                 goto nla_put_failure;
10683
10684         genlmsg_end(msg, hdr);
10685         return genlmsg_reply(msg, info);
10686
10687  nla_put_failure:
10688         err = -ENOBUFS;
10689  free_msg:
10690         nlmsg_free(msg);
10691         return err;
10692 }
10693
10694 static const struct nla_policy
10695 nl80211_attr_cqm_policy[NL80211_ATTR_CQM_MAX + 1] = {
10696         [NL80211_ATTR_CQM_RSSI_THOLD] = { .type = NLA_BINARY },
10697         [NL80211_ATTR_CQM_RSSI_HYST] = { .type = NLA_U32 },
10698         [NL80211_ATTR_CQM_RSSI_THRESHOLD_EVENT] = { .type = NLA_U32 },
10699         [NL80211_ATTR_CQM_TXE_RATE] = { .type = NLA_U32 },
10700         [NL80211_ATTR_CQM_TXE_PKTS] = { .type = NLA_U32 },
10701         [NL80211_ATTR_CQM_TXE_INTVL] = { .type = NLA_U32 },
10702         [NL80211_ATTR_CQM_RSSI_LEVEL] = { .type = NLA_S32 },
10703 };
10704
10705 static int nl80211_set_cqm_txe(struct genl_info *info,
10706                                u32 rate, u32 pkts, u32 intvl)
10707 {
10708         struct cfg80211_registered_device *rdev = info->user_ptr[0];
10709         struct net_device *dev = info->user_ptr[1];
10710         struct wireless_dev *wdev = dev->ieee80211_ptr;
10711
10712         if (rate > 100 || intvl > NL80211_CQM_TXE_MAX_INTVL)
10713                 return -EINVAL;
10714
10715         if (!rdev->ops->set_cqm_txe_config)
10716                 return -EOPNOTSUPP;
10717
10718         if (wdev->iftype != NL80211_IFTYPE_STATION &&
10719             wdev->iftype != NL80211_IFTYPE_P2P_CLIENT)
10720                 return -EOPNOTSUPP;
10721
10722         return rdev_set_cqm_txe_config(rdev, dev, rate, pkts, intvl);
10723 }
10724
10725 static int cfg80211_cqm_rssi_update(struct cfg80211_registered_device *rdev,
10726                                     struct net_device *dev)
10727 {
10728         struct wireless_dev *wdev = dev->ieee80211_ptr;
10729         s32 last, low, high;
10730         u32 hyst;
10731         int i, n, low_index;
10732         int err;
10733
10734         /* RSSI reporting disabled? */
10735         if (!wdev->cqm_config)
10736                 return rdev_set_cqm_rssi_range_config(rdev, dev, 0, 0);
10737
10738         /*
10739          * Obtain current RSSI value if possible, if not and no RSSI threshold
10740          * event has been received yet, we should receive an event after a
10741          * connection is established and enough beacons received to calculate
10742          * the average.
10743          */
10744         if (!wdev->cqm_config->last_rssi_event_value && wdev->current_bss &&
10745             rdev->ops->get_station) {
10746                 struct station_info sinfo = {};
10747                 u8 *mac_addr;
10748
10749                 mac_addr = wdev->current_bss->pub.bssid;
10750
10751                 err = rdev_get_station(rdev, dev, mac_addr, &sinfo);
10752                 if (err)
10753                         return err;
10754
10755                 if (sinfo.filled & BIT_ULL(NL80211_STA_INFO_BEACON_SIGNAL_AVG))
10756                         wdev->cqm_config->last_rssi_event_value =
10757                                 (s8) sinfo.rx_beacon_signal_avg;
10758         }
10759
10760         last = wdev->cqm_config->last_rssi_event_value;
10761         hyst = wdev->cqm_config->rssi_hyst;
10762         n = wdev->cqm_config->n_rssi_thresholds;
10763
10764         for (i = 0; i < n; i++)
10765                 if (last < wdev->cqm_config->rssi_thresholds[i])
10766                         break;
10767
10768         low_index = i - 1;
10769         if (low_index >= 0) {
10770                 low_index = array_index_nospec(low_index, n);
10771                 low = wdev->cqm_config->rssi_thresholds[low_index] - hyst;
10772         } else {
10773                 low = S32_MIN;
10774         }
10775         if (i < n) {
10776                 i = array_index_nospec(i, n);
10777                 high = wdev->cqm_config->rssi_thresholds[i] + hyst - 1;
10778         } else {
10779                 high = S32_MAX;
10780         }
10781
10782         return rdev_set_cqm_rssi_range_config(rdev, dev, low, high);
10783 }
10784
10785 static int nl80211_set_cqm_rssi(struct genl_info *info,
10786                                 const s32 *thresholds, int n_thresholds,
10787                                 u32 hysteresis)
10788 {
10789         struct cfg80211_registered_device *rdev = info->user_ptr[0];
10790         struct net_device *dev = info->user_ptr[1];
10791         struct wireless_dev *wdev = dev->ieee80211_ptr;
10792         int i, err;
10793         s32 prev = S32_MIN;
10794
10795         /* Check all values negative and sorted */
10796         for (i = 0; i < n_thresholds; i++) {
10797                 if (thresholds[i] > 0 || thresholds[i] <= prev)
10798                         return -EINVAL;
10799
10800                 prev = thresholds[i];
10801         }
10802
10803         if (wdev->iftype != NL80211_IFTYPE_STATION &&
10804             wdev->iftype != NL80211_IFTYPE_P2P_CLIENT)
10805                 return -EOPNOTSUPP;
10806
10807         wdev_lock(wdev);
10808         cfg80211_cqm_config_free(wdev);
10809         wdev_unlock(wdev);
10810
10811         if (n_thresholds <= 1 && rdev->ops->set_cqm_rssi_config) {
10812                 if (n_thresholds == 0 || thresholds[0] == 0) /* Disabling */
10813                         return rdev_set_cqm_rssi_config(rdev, dev, 0, 0);
10814
10815                 return rdev_set_cqm_rssi_config(rdev, dev,
10816                                                 thresholds[0], hysteresis);
10817         }
10818
10819         if (!wiphy_ext_feature_isset(&rdev->wiphy,
10820                                      NL80211_EXT_FEATURE_CQM_RSSI_LIST))
10821                 return -EOPNOTSUPP;
10822
10823         if (n_thresholds == 1 && thresholds[0] == 0) /* Disabling */
10824                 n_thresholds = 0;
10825
10826         wdev_lock(wdev);
10827         if (n_thresholds) {
10828                 struct cfg80211_cqm_config *cqm_config;
10829
10830                 cqm_config = kzalloc(sizeof(struct cfg80211_cqm_config) +
10831                                      n_thresholds * sizeof(s32), GFP_KERNEL);
10832                 if (!cqm_config) {
10833                         err = -ENOMEM;
10834                         goto unlock;
10835                 }
10836
10837                 cqm_config->rssi_hyst = hysteresis;
10838                 cqm_config->n_rssi_thresholds = n_thresholds;
10839                 memcpy(cqm_config->rssi_thresholds, thresholds,
10840                        n_thresholds * sizeof(s32));
10841
10842                 wdev->cqm_config = cqm_config;
10843         }
10844
10845         err = cfg80211_cqm_rssi_update(rdev, dev);
10846
10847 unlock:
10848         wdev_unlock(wdev);
10849
10850         return err;
10851 }
10852
10853 static int nl80211_set_cqm(struct sk_buff *skb, struct genl_info *info)
10854 {
10855         struct nlattr *attrs[NL80211_ATTR_CQM_MAX + 1];
10856         struct nlattr *cqm;
10857         int err;
10858
10859         cqm = info->attrs[NL80211_ATTR_CQM];
10860         if (!cqm)
10861                 return -EINVAL;
10862
10863         err = nla_parse_nested_deprecated(attrs, NL80211_ATTR_CQM_MAX, cqm,
10864                                           nl80211_attr_cqm_policy,
10865                                           info->extack);
10866         if (err)
10867                 return err;
10868
10869         if (attrs[NL80211_ATTR_CQM_RSSI_THOLD] &&
10870             attrs[NL80211_ATTR_CQM_RSSI_HYST]) {
10871                 const s32 *thresholds =
10872                         nla_data(attrs[NL80211_ATTR_CQM_RSSI_THOLD]);
10873                 int len = nla_len(attrs[NL80211_ATTR_CQM_RSSI_THOLD]);
10874                 u32 hysteresis = nla_get_u32(attrs[NL80211_ATTR_CQM_RSSI_HYST]);
10875
10876                 if (len % 4)
10877                         return -EINVAL;
10878
10879                 return nl80211_set_cqm_rssi(info, thresholds, len / 4,
10880                                             hysteresis);
10881         }
10882
10883         if (attrs[NL80211_ATTR_CQM_TXE_RATE] &&
10884             attrs[NL80211_ATTR_CQM_TXE_PKTS] &&
10885             attrs[NL80211_ATTR_CQM_TXE_INTVL]) {
10886                 u32 rate = nla_get_u32(attrs[NL80211_ATTR_CQM_TXE_RATE]);
10887                 u32 pkts = nla_get_u32(attrs[NL80211_ATTR_CQM_TXE_PKTS]);
10888                 u32 intvl = nla_get_u32(attrs[NL80211_ATTR_CQM_TXE_INTVL]);
10889
10890                 return nl80211_set_cqm_txe(info, rate, pkts, intvl);
10891         }
10892
10893         return -EINVAL;
10894 }
10895
10896 static int nl80211_join_ocb(struct sk_buff *skb, struct genl_info *info)
10897 {
10898         struct cfg80211_registered_device *rdev = info->user_ptr[0];
10899         struct net_device *dev = info->user_ptr[1];
10900         struct ocb_setup setup = {};
10901         int err;
10902
10903         err = nl80211_parse_chandef(rdev, info, &setup.chandef);
10904         if (err)
10905                 return err;
10906
10907         return cfg80211_join_ocb(rdev, dev, &setup);
10908 }
10909
10910 static int nl80211_leave_ocb(struct sk_buff *skb, struct genl_info *info)
10911 {
10912         struct cfg80211_registered_device *rdev = info->user_ptr[0];
10913         struct net_device *dev = info->user_ptr[1];
10914
10915         return cfg80211_leave_ocb(rdev, dev);
10916 }
10917
10918 static int nl80211_join_mesh(struct sk_buff *skb, struct genl_info *info)
10919 {
10920         struct cfg80211_registered_device *rdev = info->user_ptr[0];
10921         struct net_device *dev = info->user_ptr[1];
10922         struct mesh_config cfg;
10923         struct mesh_setup setup;
10924         int err;
10925
10926         /* start with default */
10927         memcpy(&cfg, &default_mesh_config, sizeof(cfg));
10928         memcpy(&setup, &default_mesh_setup, sizeof(setup));
10929
10930         if (info->attrs[NL80211_ATTR_MESH_CONFIG]) {
10931                 /* and parse parameters if given */
10932                 err = nl80211_parse_mesh_config(info, &cfg, NULL);
10933                 if (err)
10934                         return err;
10935         }
10936
10937         if (!info->attrs[NL80211_ATTR_MESH_ID] ||
10938             !nla_len(info->attrs[NL80211_ATTR_MESH_ID]))
10939                 return -EINVAL;
10940
10941         setup.mesh_id = nla_data(info->attrs[NL80211_ATTR_MESH_ID]);
10942         setup.mesh_id_len = nla_len(info->attrs[NL80211_ATTR_MESH_ID]);
10943
10944         if (info->attrs[NL80211_ATTR_MCAST_RATE] &&
10945             !nl80211_parse_mcast_rate(rdev, setup.mcast_rate,
10946                             nla_get_u32(info->attrs[NL80211_ATTR_MCAST_RATE])))
10947                         return -EINVAL;
10948
10949         if (info->attrs[NL80211_ATTR_BEACON_INTERVAL]) {
10950                 setup.beacon_interval =
10951                         nla_get_u32(info->attrs[NL80211_ATTR_BEACON_INTERVAL]);
10952
10953                 err = cfg80211_validate_beacon_int(rdev,
10954                                                    NL80211_IFTYPE_MESH_POINT,
10955                                                    setup.beacon_interval);
10956                 if (err)
10957                         return err;
10958         }
10959
10960         if (info->attrs[NL80211_ATTR_DTIM_PERIOD]) {
10961                 setup.dtim_period =
10962                         nla_get_u32(info->attrs[NL80211_ATTR_DTIM_PERIOD]);
10963                 if (setup.dtim_period < 1 || setup.dtim_period > 100)
10964                         return -EINVAL;
10965         }
10966
10967         if (info->attrs[NL80211_ATTR_MESH_SETUP]) {
10968                 /* parse additional setup parameters if given */
10969                 err = nl80211_parse_mesh_setup(info, &setup);
10970                 if (err)
10971                         return err;
10972         }
10973
10974         if (setup.user_mpm)
10975                 cfg.auto_open_plinks = false;
10976
10977         if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
10978                 err = nl80211_parse_chandef(rdev, info, &setup.chandef);
10979                 if (err)
10980                         return err;
10981         } else {
10982                 /* __cfg80211_join_mesh() will sort it out */
10983                 setup.chandef.chan = NULL;
10984         }
10985
10986         if (info->attrs[NL80211_ATTR_BSS_BASIC_RATES]) {
10987                 u8 *rates = nla_data(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
10988                 int n_rates =
10989                         nla_len(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
10990                 struct ieee80211_supported_band *sband;
10991
10992                 if (!setup.chandef.chan)
10993                         return -EINVAL;
10994
10995                 sband = rdev->wiphy.bands[setup.chandef.chan->band];
10996
10997                 err = ieee80211_get_ratemask(sband, rates, n_rates,
10998                                              &setup.basic_rates);
10999                 if (err)
11000                         return err;
11001         }
11002
11003         if (info->attrs[NL80211_ATTR_TX_RATES]) {
11004                 err = nl80211_parse_tx_bitrate_mask(info, &setup.beacon_rate);
11005                 if (err)
11006                         return err;
11007
11008                 if (!setup.chandef.chan)
11009                         return -EINVAL;
11010
11011                 err = validate_beacon_tx_rate(rdev, setup.chandef.chan->band,
11012                                               &setup.beacon_rate);
11013                 if (err)
11014                         return err;
11015         }
11016
11017         setup.userspace_handles_dfs =
11018                 nla_get_flag(info->attrs[NL80211_ATTR_HANDLE_DFS]);
11019
11020         if (info->attrs[NL80211_ATTR_CONTROL_PORT_OVER_NL80211]) {
11021                 int r = validate_pae_over_nl80211(rdev, info);
11022
11023                 if (r < 0)
11024                         return r;
11025
11026                 setup.control_port_over_nl80211 = true;
11027         }
11028
11029         wdev_lock(dev->ieee80211_ptr);
11030         err = __cfg80211_join_mesh(rdev, dev, &setup, &cfg);
11031         if (!err && info->attrs[NL80211_ATTR_SOCKET_OWNER])
11032                 dev->ieee80211_ptr->conn_owner_nlportid = info->snd_portid;
11033         wdev_unlock(dev->ieee80211_ptr);
11034
11035         return err;
11036 }
11037
11038 static int nl80211_leave_mesh(struct sk_buff *skb, struct genl_info *info)
11039 {
11040         struct cfg80211_registered_device *rdev = info->user_ptr[0];
11041         struct net_device *dev = info->user_ptr[1];
11042
11043         return cfg80211_leave_mesh(rdev, dev);
11044 }
11045
11046 #ifdef CONFIG_PM
11047 static int nl80211_send_wowlan_patterns(struct sk_buff *msg,
11048                                         struct cfg80211_registered_device *rdev)
11049 {
11050         struct cfg80211_wowlan *wowlan = rdev->wiphy.wowlan_config;
11051         struct nlattr *nl_pats, *nl_pat;
11052         int i, pat_len;
11053
11054         if (!wowlan->n_patterns)
11055                 return 0;
11056
11057         nl_pats = nla_nest_start_noflag(msg, NL80211_WOWLAN_TRIG_PKT_PATTERN);
11058         if (!nl_pats)
11059                 return -ENOBUFS;
11060
11061         for (i = 0; i < wowlan->n_patterns; i++) {
11062                 nl_pat = nla_nest_start_noflag(msg, i + 1);
11063                 if (!nl_pat)
11064                         return -ENOBUFS;
11065                 pat_len = wowlan->patterns[i].pattern_len;
11066                 if (nla_put(msg, NL80211_PKTPAT_MASK, DIV_ROUND_UP(pat_len, 8),
11067                             wowlan->patterns[i].mask) ||
11068                     nla_put(msg, NL80211_PKTPAT_PATTERN, pat_len,
11069                             wowlan->patterns[i].pattern) ||
11070                     nla_put_u32(msg, NL80211_PKTPAT_OFFSET,
11071                                 wowlan->patterns[i].pkt_offset))
11072                         return -ENOBUFS;
11073                 nla_nest_end(msg, nl_pat);
11074         }
11075         nla_nest_end(msg, nl_pats);
11076
11077         return 0;
11078 }
11079
11080 static int nl80211_send_wowlan_tcp(struct sk_buff *msg,
11081                                    struct cfg80211_wowlan_tcp *tcp)
11082 {
11083         struct nlattr *nl_tcp;
11084
11085         if (!tcp)
11086                 return 0;
11087
11088         nl_tcp = nla_nest_start_noflag(msg,
11089                                        NL80211_WOWLAN_TRIG_TCP_CONNECTION);
11090         if (!nl_tcp)
11091                 return -ENOBUFS;
11092
11093         if (nla_put_in_addr(msg, NL80211_WOWLAN_TCP_SRC_IPV4, tcp->src) ||
11094             nla_put_in_addr(msg, NL80211_WOWLAN_TCP_DST_IPV4, tcp->dst) ||
11095             nla_put(msg, NL80211_WOWLAN_TCP_DST_MAC, ETH_ALEN, tcp->dst_mac) ||
11096             nla_put_u16(msg, NL80211_WOWLAN_TCP_SRC_PORT, tcp->src_port) ||
11097             nla_put_u16(msg, NL80211_WOWLAN_TCP_DST_PORT, tcp->dst_port) ||
11098             nla_put(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD,
11099                     tcp->payload_len, tcp->payload) ||
11100             nla_put_u32(msg, NL80211_WOWLAN_TCP_DATA_INTERVAL,
11101                         tcp->data_interval) ||
11102             nla_put(msg, NL80211_WOWLAN_TCP_WAKE_PAYLOAD,
11103                     tcp->wake_len, tcp->wake_data) ||
11104             nla_put(msg, NL80211_WOWLAN_TCP_WAKE_MASK,
11105                     DIV_ROUND_UP(tcp->wake_len, 8), tcp->wake_mask))
11106                 return -ENOBUFS;
11107
11108         if (tcp->payload_seq.len &&
11109             nla_put(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ,
11110                     sizeof(tcp->payload_seq), &tcp->payload_seq))
11111                 return -ENOBUFS;
11112
11113         if (tcp->payload_tok.len &&
11114             nla_put(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN,
11115                     sizeof(tcp->payload_tok) + tcp->tokens_size,
11116                     &tcp->payload_tok))
11117                 return -ENOBUFS;
11118
11119         nla_nest_end(msg, nl_tcp);
11120
11121         return 0;
11122 }
11123
11124 static int nl80211_send_wowlan_nd(struct sk_buff *msg,
11125                                   struct cfg80211_sched_scan_request *req)
11126 {
11127         struct nlattr *nd, *freqs, *matches, *match, *scan_plans, *scan_plan;
11128         int i;
11129
11130         if (!req)
11131                 return 0;
11132
11133         nd = nla_nest_start_noflag(msg, NL80211_WOWLAN_TRIG_NET_DETECT);
11134         if (!nd)
11135                 return -ENOBUFS;
11136
11137         if (req->n_scan_plans == 1 &&
11138             nla_put_u32(msg, NL80211_ATTR_SCHED_SCAN_INTERVAL,
11139                         req->scan_plans[0].interval * 1000))
11140                 return -ENOBUFS;
11141
11142         if (nla_put_u32(msg, NL80211_ATTR_SCHED_SCAN_DELAY, req->delay))
11143                 return -ENOBUFS;
11144
11145         if (req->relative_rssi_set) {
11146                 struct nl80211_bss_select_rssi_adjust rssi_adjust;
11147
11148                 if (nla_put_s8(msg, NL80211_ATTR_SCHED_SCAN_RELATIVE_RSSI,
11149                                req->relative_rssi))
11150                         return -ENOBUFS;
11151
11152                 rssi_adjust.band = req->rssi_adjust.band;
11153                 rssi_adjust.delta = req->rssi_adjust.delta;
11154                 if (nla_put(msg, NL80211_ATTR_SCHED_SCAN_RSSI_ADJUST,
11155                             sizeof(rssi_adjust), &rssi_adjust))
11156                         return -ENOBUFS;
11157         }
11158
11159         freqs = nla_nest_start_noflag(msg, NL80211_ATTR_SCAN_FREQUENCIES);
11160         if (!freqs)
11161                 return -ENOBUFS;
11162
11163         for (i = 0; i < req->n_channels; i++) {
11164                 if (nla_put_u32(msg, i, req->channels[i]->center_freq))
11165                         return -ENOBUFS;
11166         }
11167
11168         nla_nest_end(msg, freqs);
11169
11170         if (req->n_match_sets) {
11171                 matches = nla_nest_start_noflag(msg,
11172                                                 NL80211_ATTR_SCHED_SCAN_MATCH);
11173                 if (!matches)
11174                         return -ENOBUFS;
11175
11176                 for (i = 0; i < req->n_match_sets; i++) {
11177                         match = nla_nest_start_noflag(msg, i);
11178                         if (!match)
11179                                 return -ENOBUFS;
11180
11181                         if (nla_put(msg, NL80211_SCHED_SCAN_MATCH_ATTR_SSID,
11182                                     req->match_sets[i].ssid.ssid_len,
11183                                     req->match_sets[i].ssid.ssid))
11184                                 return -ENOBUFS;
11185                         nla_nest_end(msg, match);
11186                 }
11187                 nla_nest_end(msg, matches);
11188         }
11189
11190         scan_plans = nla_nest_start_noflag(msg, NL80211_ATTR_SCHED_SCAN_PLANS);
11191         if (!scan_plans)
11192                 return -ENOBUFS;
11193
11194         for (i = 0; i < req->n_scan_plans; i++) {
11195                 scan_plan = nla_nest_start_noflag(msg, i + 1);
11196                 if (!scan_plan)
11197                         return -ENOBUFS;
11198
11199                 if (nla_put_u32(msg, NL80211_SCHED_SCAN_PLAN_INTERVAL,
11200                                 req->scan_plans[i].interval) ||
11201                     (req->scan_plans[i].iterations &&
11202                      nla_put_u32(msg, NL80211_SCHED_SCAN_PLAN_ITERATIONS,
11203                                  req->scan_plans[i].iterations)))
11204                         return -ENOBUFS;
11205                 nla_nest_end(msg, scan_plan);
11206         }
11207         nla_nest_end(msg, scan_plans);
11208
11209         nla_nest_end(msg, nd);
11210
11211         return 0;
11212 }
11213
11214 static int nl80211_get_wowlan(struct sk_buff *skb, struct genl_info *info)
11215 {
11216         struct cfg80211_registered_device *rdev = info->user_ptr[0];
11217         struct sk_buff *msg;
11218         void *hdr;
11219         u32 size = NLMSG_DEFAULT_SIZE;
11220
11221         if (!rdev->wiphy.wowlan)
11222                 return -EOPNOTSUPP;
11223
11224         if (rdev->wiphy.wowlan_config && rdev->wiphy.wowlan_config->tcp) {
11225                 /* adjust size to have room for all the data */
11226                 size += rdev->wiphy.wowlan_config->tcp->tokens_size +
11227                         rdev->wiphy.wowlan_config->tcp->payload_len +
11228                         rdev->wiphy.wowlan_config->tcp->wake_len +
11229                         rdev->wiphy.wowlan_config->tcp->wake_len / 8;
11230         }
11231
11232         msg = nlmsg_new(size, GFP_KERNEL);
11233         if (!msg)
11234                 return -ENOMEM;
11235
11236         hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
11237                              NL80211_CMD_GET_WOWLAN);
11238         if (!hdr)
11239                 goto nla_put_failure;
11240
11241         if (rdev->wiphy.wowlan_config) {
11242                 struct nlattr *nl_wowlan;
11243
11244                 nl_wowlan = nla_nest_start_noflag(msg,
11245                                                   NL80211_ATTR_WOWLAN_TRIGGERS);
11246                 if (!nl_wowlan)
11247                         goto nla_put_failure;
11248
11249                 if ((rdev->wiphy.wowlan_config->any &&
11250                      nla_put_flag(msg, NL80211_WOWLAN_TRIG_ANY)) ||
11251                     (rdev->wiphy.wowlan_config->disconnect &&
11252                      nla_put_flag(msg, NL80211_WOWLAN_TRIG_DISCONNECT)) ||
11253                     (rdev->wiphy.wowlan_config->magic_pkt &&
11254                      nla_put_flag(msg, NL80211_WOWLAN_TRIG_MAGIC_PKT)) ||
11255                     (rdev->wiphy.wowlan_config->gtk_rekey_failure &&
11256                      nla_put_flag(msg, NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE)) ||
11257                     (rdev->wiphy.wowlan_config->eap_identity_req &&
11258                      nla_put_flag(msg, NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST)) ||
11259                     (rdev->wiphy.wowlan_config->four_way_handshake &&
11260                      nla_put_flag(msg, NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE)) ||
11261                     (rdev->wiphy.wowlan_config->rfkill_release &&
11262                      nla_put_flag(msg, NL80211_WOWLAN_TRIG_RFKILL_RELEASE)))
11263                         goto nla_put_failure;
11264
11265                 if (nl80211_send_wowlan_patterns(msg, rdev))
11266                         goto nla_put_failure;
11267
11268                 if (nl80211_send_wowlan_tcp(msg,
11269                                             rdev->wiphy.wowlan_config->tcp))
11270                         goto nla_put_failure;
11271
11272                 if (nl80211_send_wowlan_nd(
11273                             msg,
11274                             rdev->wiphy.wowlan_config->nd_config))
11275                         goto nla_put_failure;
11276
11277                 nla_nest_end(msg, nl_wowlan);
11278         }
11279
11280         genlmsg_end(msg, hdr);
11281         return genlmsg_reply(msg, info);
11282
11283 nla_put_failure:
11284         nlmsg_free(msg);
11285         return -ENOBUFS;
11286 }
11287
11288 static int nl80211_parse_wowlan_tcp(struct cfg80211_registered_device *rdev,
11289                                     struct nlattr *attr,
11290                                     struct cfg80211_wowlan *trig)
11291 {
11292         struct nlattr *tb[NUM_NL80211_WOWLAN_TCP];
11293         struct cfg80211_wowlan_tcp *cfg;
11294         struct nl80211_wowlan_tcp_data_token *tok = NULL;
11295         struct nl80211_wowlan_tcp_data_seq *seq = NULL;
11296         u32 size;
11297         u32 data_size, wake_size, tokens_size = 0, wake_mask_size;
11298         int err, port;
11299
11300         if (!rdev->wiphy.wowlan->tcp)
11301                 return -EINVAL;
11302
11303         err = nla_parse_nested_deprecated(tb, MAX_NL80211_WOWLAN_TCP, attr,
11304                                           nl80211_wowlan_tcp_policy, NULL);
11305         if (err)
11306                 return err;
11307
11308         if (!tb[NL80211_WOWLAN_TCP_SRC_IPV4] ||
11309             !tb[NL80211_WOWLAN_TCP_DST_IPV4] ||
11310             !tb[NL80211_WOWLAN_TCP_DST_MAC] ||
11311             !tb[NL80211_WOWLAN_TCP_DST_PORT] ||
11312             !tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD] ||
11313             !tb[NL80211_WOWLAN_TCP_DATA_INTERVAL] ||
11314             !tb[NL80211_WOWLAN_TCP_WAKE_PAYLOAD] ||
11315             !tb[NL80211_WOWLAN_TCP_WAKE_MASK])
11316                 return -EINVAL;
11317
11318         data_size = nla_len(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD]);
11319         if (data_size > rdev->wiphy.wowlan->tcp->data_payload_max)
11320                 return -EINVAL;
11321
11322         if (nla_get_u32(tb[NL80211_WOWLAN_TCP_DATA_INTERVAL]) >
11323                         rdev->wiphy.wowlan->tcp->data_interval_max ||
11324             nla_get_u32(tb[NL80211_WOWLAN_TCP_DATA_INTERVAL]) == 0)
11325                 return -EINVAL;
11326
11327         wake_size = nla_len(tb[NL80211_WOWLAN_TCP_WAKE_PAYLOAD]);
11328         if (wake_size > rdev->wiphy.wowlan->tcp->wake_payload_max)
11329                 return -EINVAL;
11330
11331         wake_mask_size = nla_len(tb[NL80211_WOWLAN_TCP_WAKE_MASK]);
11332         if (wake_mask_size != DIV_ROUND_UP(wake_size, 8))
11333                 return -EINVAL;
11334
11335         if (tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN]) {
11336                 u32 tokln = nla_len(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN]);
11337
11338                 tok = nla_data(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN]);
11339                 tokens_size = tokln - sizeof(*tok);
11340
11341                 if (!tok->len || tokens_size % tok->len)
11342                         return -EINVAL;
11343                 if (!rdev->wiphy.wowlan->tcp->tok)
11344                         return -EINVAL;
11345                 if (tok->len > rdev->wiphy.wowlan->tcp->tok->max_len)
11346                         return -EINVAL;
11347                 if (tok->len < rdev->wiphy.wowlan->tcp->tok->min_len)
11348                         return -EINVAL;
11349                 if (tokens_size > rdev->wiphy.wowlan->tcp->tok->bufsize)
11350                         return -EINVAL;
11351                 if (tok->offset + tok->len > data_size)
11352                         return -EINVAL;
11353         }
11354
11355         if (tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ]) {
11356                 seq = nla_data(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ]);
11357                 if (!rdev->wiphy.wowlan->tcp->seq)
11358                         return -EINVAL;
11359                 if (seq->len == 0 || seq->len > 4)
11360                         return -EINVAL;
11361                 if (seq->len + seq->offset > data_size)
11362                         return -EINVAL;
11363         }
11364
11365         size = sizeof(*cfg);
11366         size += data_size;
11367         size += wake_size + wake_mask_size;
11368         size += tokens_size;
11369
11370         cfg = kzalloc(size, GFP_KERNEL);
11371         if (!cfg)
11372                 return -ENOMEM;
11373         cfg->src = nla_get_in_addr(tb[NL80211_WOWLAN_TCP_SRC_IPV4]);
11374         cfg->dst = nla_get_in_addr(tb[NL80211_WOWLAN_TCP_DST_IPV4]);
11375         memcpy(cfg->dst_mac, nla_data(tb[NL80211_WOWLAN_TCP_DST_MAC]),
11376                ETH_ALEN);
11377         if (tb[NL80211_WOWLAN_TCP_SRC_PORT])
11378                 port = nla_get_u16(tb[NL80211_WOWLAN_TCP_SRC_PORT]);
11379         else
11380                 port = 0;
11381 #ifdef CONFIG_INET
11382         /* allocate a socket and port for it and use it */
11383         err = __sock_create(wiphy_net(&rdev->wiphy), PF_INET, SOCK_STREAM,
11384                             IPPROTO_TCP, &cfg->sock, 1);
11385         if (err) {
11386                 kfree(cfg);
11387                 return err;
11388         }
11389         if (inet_csk_get_port(cfg->sock->sk, port)) {
11390                 sock_release(cfg->sock);
11391                 kfree(cfg);
11392                 return -EADDRINUSE;
11393         }
11394         cfg->src_port = inet_sk(cfg->sock->sk)->inet_num;
11395 #else
11396         if (!port) {
11397                 kfree(cfg);
11398                 return -EINVAL;
11399         }
11400         cfg->src_port = port;
11401 #endif
11402
11403         cfg->dst_port = nla_get_u16(tb[NL80211_WOWLAN_TCP_DST_PORT]);
11404         cfg->payload_len = data_size;
11405         cfg->payload = (u8 *)cfg + sizeof(*cfg) + tokens_size;
11406         memcpy((void *)cfg->payload,
11407                nla_data(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD]),
11408                data_size);
11409         if (seq)
11410                 cfg->payload_seq = *seq;
11411         cfg->data_interval = nla_get_u32(tb[NL80211_WOWLAN_TCP_DATA_INTERVAL]);
11412         cfg->wake_len = wake_size;
11413         cfg->wake_data = (u8 *)cfg + sizeof(*cfg) + tokens_size + data_size;
11414         memcpy((void *)cfg->wake_data,
11415                nla_data(tb[NL80211_WOWLAN_TCP_WAKE_PAYLOAD]),
11416                wake_size);
11417         cfg->wake_mask = (u8 *)cfg + sizeof(*cfg) + tokens_size +
11418                          data_size + wake_size;
11419         memcpy((void *)cfg->wake_mask,
11420                nla_data(tb[NL80211_WOWLAN_TCP_WAKE_MASK]),
11421                wake_mask_size);
11422         if (tok) {
11423                 cfg->tokens_size = tokens_size;
11424                 memcpy(&cfg->payload_tok, tok, sizeof(*tok) + tokens_size);
11425         }
11426
11427         trig->tcp = cfg;
11428
11429         return 0;
11430 }
11431
11432 static int nl80211_parse_wowlan_nd(struct cfg80211_registered_device *rdev,
11433                                    const struct wiphy_wowlan_support *wowlan,
11434                                    struct nlattr *attr,
11435                                    struct cfg80211_wowlan *trig)
11436 {
11437         struct nlattr **tb;
11438         int err;
11439
11440         tb = kcalloc(NUM_NL80211_ATTR, sizeof(*tb), GFP_KERNEL);
11441         if (!tb)
11442                 return -ENOMEM;
11443
11444         if (!(wowlan->flags & WIPHY_WOWLAN_NET_DETECT)) {
11445                 err = -EOPNOTSUPP;
11446                 goto out;
11447         }
11448
11449         err = nla_parse_nested_deprecated(tb, NL80211_ATTR_MAX, attr,
11450                                           nl80211_policy, NULL);
11451         if (err)
11452                 goto out;
11453
11454         trig->nd_config = nl80211_parse_sched_scan(&rdev->wiphy, NULL, tb,
11455                                                    wowlan->max_nd_match_sets);
11456         err = PTR_ERR_OR_ZERO(trig->nd_config);
11457         if (err)
11458                 trig->nd_config = NULL;
11459
11460 out:
11461         kfree(tb);
11462         return err;
11463 }
11464
11465 static int nl80211_set_wowlan(struct sk_buff *skb, struct genl_info *info)
11466 {
11467         struct cfg80211_registered_device *rdev = info->user_ptr[0];
11468         struct nlattr *tb[NUM_NL80211_WOWLAN_TRIG];
11469         struct cfg80211_wowlan new_triggers = {};
11470         struct cfg80211_wowlan *ntrig;
11471         const struct wiphy_wowlan_support *wowlan = rdev->wiphy.wowlan;
11472         int err, i;
11473         bool prev_enabled = rdev->wiphy.wowlan_config;
11474         bool regular = false;
11475
11476         if (!wowlan)
11477                 return -EOPNOTSUPP;
11478
11479         if (!info->attrs[NL80211_ATTR_WOWLAN_TRIGGERS]) {
11480                 cfg80211_rdev_free_wowlan(rdev);
11481                 rdev->wiphy.wowlan_config = NULL;
11482                 goto set_wakeup;
11483         }
11484
11485         err = nla_parse_nested_deprecated(tb, MAX_NL80211_WOWLAN_TRIG,
11486                                           info->attrs[NL80211_ATTR_WOWLAN_TRIGGERS],
11487                                           nl80211_wowlan_policy, info->extack);
11488         if (err)
11489                 return err;
11490
11491         if (tb[NL80211_WOWLAN_TRIG_ANY]) {
11492                 if (!(wowlan->flags & WIPHY_WOWLAN_ANY))
11493                         return -EINVAL;
11494                 new_triggers.any = true;
11495         }
11496
11497         if (tb[NL80211_WOWLAN_TRIG_DISCONNECT]) {
11498                 if (!(wowlan->flags & WIPHY_WOWLAN_DISCONNECT))
11499                         return -EINVAL;
11500                 new_triggers.disconnect = true;
11501                 regular = true;
11502         }
11503
11504         if (tb[NL80211_WOWLAN_TRIG_MAGIC_PKT]) {
11505                 if (!(wowlan->flags & WIPHY_WOWLAN_MAGIC_PKT))
11506                         return -EINVAL;
11507                 new_triggers.magic_pkt = true;
11508                 regular = true;
11509         }
11510
11511         if (tb[NL80211_WOWLAN_TRIG_GTK_REKEY_SUPPORTED])
11512                 return -EINVAL;
11513
11514         if (tb[NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE]) {
11515                 if (!(wowlan->flags & WIPHY_WOWLAN_GTK_REKEY_FAILURE))
11516                         return -EINVAL;
11517                 new_triggers.gtk_rekey_failure = true;
11518                 regular = true;
11519         }
11520
11521         if (tb[NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST]) {
11522                 if (!(wowlan->flags & WIPHY_WOWLAN_EAP_IDENTITY_REQ))
11523                         return -EINVAL;
11524                 new_triggers.eap_identity_req = true;
11525                 regular = true;
11526         }
11527
11528         if (tb[NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE]) {
11529                 if (!(wowlan->flags & WIPHY_WOWLAN_4WAY_HANDSHAKE))
11530                         return -EINVAL;
11531                 new_triggers.four_way_handshake = true;
11532                 regular = true;
11533         }
11534
11535         if (tb[NL80211_WOWLAN_TRIG_RFKILL_RELEASE]) {
11536                 if (!(wowlan->flags & WIPHY_WOWLAN_RFKILL_RELEASE))
11537                         return -EINVAL;
11538                 new_triggers.rfkill_release = true;
11539                 regular = true;
11540         }
11541
11542         if (tb[NL80211_WOWLAN_TRIG_PKT_PATTERN]) {
11543                 struct nlattr *pat;
11544                 int n_patterns = 0;
11545                 int rem, pat_len, mask_len, pkt_offset;
11546                 struct nlattr *pat_tb[NUM_NL80211_PKTPAT];
11547
11548                 regular = true;
11549
11550                 nla_for_each_nested(pat, tb[NL80211_WOWLAN_TRIG_PKT_PATTERN],
11551                                     rem)
11552                         n_patterns++;
11553                 if (n_patterns > wowlan->n_patterns)
11554                         return -EINVAL;
11555
11556                 new_triggers.patterns = kcalloc(n_patterns,
11557                                                 sizeof(new_triggers.patterns[0]),
11558                                                 GFP_KERNEL);
11559                 if (!new_triggers.patterns)
11560                         return -ENOMEM;
11561
11562                 new_triggers.n_patterns = n_patterns;
11563                 i = 0;
11564
11565                 nla_for_each_nested(pat, tb[NL80211_WOWLAN_TRIG_PKT_PATTERN],
11566                                     rem) {
11567                         u8 *mask_pat;
11568
11569                         err = nla_parse_nested_deprecated(pat_tb,
11570                                                           MAX_NL80211_PKTPAT,
11571                                                           pat,
11572                                                           nl80211_packet_pattern_policy,
11573                                                           info->extack);
11574                         if (err)
11575                                 goto error;
11576
11577                         err = -EINVAL;
11578                         if (!pat_tb[NL80211_PKTPAT_MASK] ||
11579                             !pat_tb[NL80211_PKTPAT_PATTERN])
11580                                 goto error;
11581                         pat_len = nla_len(pat_tb[NL80211_PKTPAT_PATTERN]);
11582                         mask_len = DIV_ROUND_UP(pat_len, 8);
11583                         if (nla_len(pat_tb[NL80211_PKTPAT_MASK]) != mask_len)
11584                                 goto error;
11585                         if (pat_len > wowlan->pattern_max_len ||
11586                             pat_len < wowlan->pattern_min_len)
11587                                 goto error;
11588
11589                         if (!pat_tb[NL80211_PKTPAT_OFFSET])
11590                                 pkt_offset = 0;
11591                         else
11592                                 pkt_offset = nla_get_u32(
11593                                         pat_tb[NL80211_PKTPAT_OFFSET]);
11594                         if (pkt_offset > wowlan->max_pkt_offset)
11595                                 goto error;
11596                         new_triggers.patterns[i].pkt_offset = pkt_offset;
11597
11598                         mask_pat = kmalloc(mask_len + pat_len, GFP_KERNEL);
11599                         if (!mask_pat) {
11600                                 err = -ENOMEM;
11601                                 goto error;
11602                         }
11603                         new_triggers.patterns[i].mask = mask_pat;
11604                         memcpy(mask_pat, nla_data(pat_tb[NL80211_PKTPAT_MASK]),
11605                                mask_len);
11606                         mask_pat += mask_len;
11607                         new_triggers.patterns[i].pattern = mask_pat;
11608                         new_triggers.patterns[i].pattern_len = pat_len;
11609                         memcpy(mask_pat,
11610                                nla_data(pat_tb[NL80211_PKTPAT_PATTERN]),
11611                                pat_len);
11612                         i++;
11613                 }
11614         }
11615
11616         if (tb[NL80211_WOWLAN_TRIG_TCP_CONNECTION]) {
11617                 regular = true;
11618                 err = nl80211_parse_wowlan_tcp(
11619                         rdev, tb[NL80211_WOWLAN_TRIG_TCP_CONNECTION],
11620                         &new_triggers);
11621                 if (err)
11622                         goto error;
11623         }
11624
11625         if (tb[NL80211_WOWLAN_TRIG_NET_DETECT]) {
11626                 regular = true;
11627                 err = nl80211_parse_wowlan_nd(
11628                         rdev, wowlan, tb[NL80211_WOWLAN_TRIG_NET_DETECT],
11629                         &new_triggers);
11630                 if (err)
11631                         goto error;
11632         }
11633
11634         /* The 'any' trigger means the device continues operating more or less
11635          * as in its normal operation mode and wakes up the host on most of the
11636          * normal interrupts (like packet RX, ...)
11637          * It therefore makes little sense to combine with the more constrained
11638          * wakeup trigger modes.
11639          */
11640         if (new_triggers.any && regular) {
11641                 err = -EINVAL;
11642                 goto error;
11643         }
11644
11645         ntrig = kmemdup(&new_triggers, sizeof(new_triggers), GFP_KERNEL);
11646         if (!ntrig) {
11647                 err = -ENOMEM;
11648                 goto error;
11649         }
11650         cfg80211_rdev_free_wowlan(rdev);
11651         rdev->wiphy.wowlan_config = ntrig;
11652
11653  set_wakeup:
11654         if (rdev->ops->set_wakeup &&
11655             prev_enabled != !!rdev->wiphy.wowlan_config)
11656                 rdev_set_wakeup(rdev, rdev->wiphy.wowlan_config);
11657
11658         return 0;
11659  error:
11660         for (i = 0; i < new_triggers.n_patterns; i++)
11661                 kfree(new_triggers.patterns[i].mask);
11662         kfree(new_triggers.patterns);
11663         if (new_triggers.tcp && new_triggers.tcp->sock)
11664                 sock_release(new_triggers.tcp->sock);
11665         kfree(new_triggers.tcp);
11666         kfree(new_triggers.nd_config);
11667         return err;
11668 }
11669 #endif
11670
11671 static int nl80211_send_coalesce_rules(struct sk_buff *msg,
11672                                        struct cfg80211_registered_device *rdev)
11673 {
11674         struct nlattr *nl_pats, *nl_pat, *nl_rule, *nl_rules;
11675         int i, j, pat_len;
11676         struct cfg80211_coalesce_rules *rule;
11677
11678         if (!rdev->coalesce->n_rules)
11679                 return 0;
11680
11681         nl_rules = nla_nest_start_noflag(msg, NL80211_ATTR_COALESCE_RULE);
11682         if (!nl_rules)
11683                 return -ENOBUFS;
11684
11685         for (i = 0; i < rdev->coalesce->n_rules; i++) {
11686                 nl_rule = nla_nest_start_noflag(msg, i + 1);
11687                 if (!nl_rule)
11688                         return -ENOBUFS;
11689
11690                 rule = &rdev->coalesce->rules[i];
11691                 if (nla_put_u32(msg, NL80211_ATTR_COALESCE_RULE_DELAY,
11692                                 rule->delay))
11693                         return -ENOBUFS;
11694
11695                 if (nla_put_u32(msg, NL80211_ATTR_COALESCE_RULE_CONDITION,
11696                                 rule->condition))
11697                         return -ENOBUFS;
11698
11699                 nl_pats = nla_nest_start_noflag(msg,
11700                                                 NL80211_ATTR_COALESCE_RULE_PKT_PATTERN);
11701                 if (!nl_pats)
11702                         return -ENOBUFS;
11703
11704                 for (j = 0; j < rule->n_patterns; j++) {
11705                         nl_pat = nla_nest_start_noflag(msg, j + 1);
11706                         if (!nl_pat)
11707                                 return -ENOBUFS;
11708                         pat_len = rule->patterns[j].pattern_len;
11709                         if (nla_put(msg, NL80211_PKTPAT_MASK,
11710                                     DIV_ROUND_UP(pat_len, 8),
11711                                     rule->patterns[j].mask) ||
11712                             nla_put(msg, NL80211_PKTPAT_PATTERN, pat_len,
11713                                     rule->patterns[j].pattern) ||
11714                             nla_put_u32(msg, NL80211_PKTPAT_OFFSET,
11715                                         rule->patterns[j].pkt_offset))
11716                                 return -ENOBUFS;
11717                         nla_nest_end(msg, nl_pat);
11718                 }
11719                 nla_nest_end(msg, nl_pats);
11720                 nla_nest_end(msg, nl_rule);
11721         }
11722         nla_nest_end(msg, nl_rules);
11723
11724         return 0;
11725 }
11726
11727 static int nl80211_get_coalesce(struct sk_buff *skb, struct genl_info *info)
11728 {
11729         struct cfg80211_registered_device *rdev = info->user_ptr[0];
11730         struct sk_buff *msg;
11731         void *hdr;
11732
11733         if (!rdev->wiphy.coalesce)
11734                 return -EOPNOTSUPP;
11735
11736         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
11737         if (!msg)
11738                 return -ENOMEM;
11739
11740         hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
11741                              NL80211_CMD_GET_COALESCE);
11742         if (!hdr)
11743                 goto nla_put_failure;
11744
11745         if (rdev->coalesce && nl80211_send_coalesce_rules(msg, rdev))
11746                 goto nla_put_failure;
11747
11748         genlmsg_end(msg, hdr);
11749         return genlmsg_reply(msg, info);
11750
11751 nla_put_failure:
11752         nlmsg_free(msg);
11753         return -ENOBUFS;
11754 }
11755
11756 void cfg80211_rdev_free_coalesce(struct cfg80211_registered_device *rdev)
11757 {
11758         struct cfg80211_coalesce *coalesce = rdev->coalesce;
11759         int i, j;
11760         struct cfg80211_coalesce_rules *rule;
11761
11762         if (!coalesce)
11763                 return;
11764
11765         for (i = 0; i < coalesce->n_rules; i++) {
11766                 rule = &coalesce->rules[i];
11767                 for (j = 0; j < rule->n_patterns; j++)
11768                         kfree(rule->patterns[j].mask);
11769                 kfree(rule->patterns);
11770         }
11771         kfree(coalesce->rules);
11772         kfree(coalesce);
11773         rdev->coalesce = NULL;
11774 }
11775
11776 static int nl80211_parse_coalesce_rule(struct cfg80211_registered_device *rdev,
11777                                        struct nlattr *rule,
11778                                        struct cfg80211_coalesce_rules *new_rule)
11779 {
11780         int err, i;
11781         const struct wiphy_coalesce_support *coalesce = rdev->wiphy.coalesce;
11782         struct nlattr *tb[NUM_NL80211_ATTR_COALESCE_RULE], *pat;
11783         int rem, pat_len, mask_len, pkt_offset, n_patterns = 0;
11784         struct nlattr *pat_tb[NUM_NL80211_PKTPAT];
11785
11786         err = nla_parse_nested_deprecated(tb, NL80211_ATTR_COALESCE_RULE_MAX,
11787                                           rule, nl80211_coalesce_policy, NULL);
11788         if (err)
11789                 return err;
11790
11791         if (tb[NL80211_ATTR_COALESCE_RULE_DELAY])
11792                 new_rule->delay =
11793                         nla_get_u32(tb[NL80211_ATTR_COALESCE_RULE_DELAY]);
11794         if (new_rule->delay > coalesce->max_delay)
11795                 return -EINVAL;
11796
11797         if (tb[NL80211_ATTR_COALESCE_RULE_CONDITION])
11798                 new_rule->condition =
11799                         nla_get_u32(tb[NL80211_ATTR_COALESCE_RULE_CONDITION]);
11800
11801         if (!tb[NL80211_ATTR_COALESCE_RULE_PKT_PATTERN])
11802                 return -EINVAL;
11803
11804         nla_for_each_nested(pat, tb[NL80211_ATTR_COALESCE_RULE_PKT_PATTERN],
11805                             rem)
11806                 n_patterns++;
11807         if (n_patterns > coalesce->n_patterns)
11808                 return -EINVAL;
11809
11810         new_rule->patterns = kcalloc(n_patterns, sizeof(new_rule->patterns[0]),
11811                                      GFP_KERNEL);
11812         if (!new_rule->patterns)
11813                 return -ENOMEM;
11814
11815         new_rule->n_patterns = n_patterns;
11816         i = 0;
11817
11818         nla_for_each_nested(pat, tb[NL80211_ATTR_COALESCE_RULE_PKT_PATTERN],
11819                             rem) {
11820                 u8 *mask_pat;
11821
11822                 err = nla_parse_nested_deprecated(pat_tb, MAX_NL80211_PKTPAT,
11823                                                   pat,
11824                                                   nl80211_packet_pattern_policy,
11825                                                   NULL);
11826                 if (err)
11827                         return err;
11828
11829                 if (!pat_tb[NL80211_PKTPAT_MASK] ||
11830                     !pat_tb[NL80211_PKTPAT_PATTERN])
11831                         return -EINVAL;
11832                 pat_len = nla_len(pat_tb[NL80211_PKTPAT_PATTERN]);
11833                 mask_len = DIV_ROUND_UP(pat_len, 8);
11834                 if (nla_len(pat_tb[NL80211_PKTPAT_MASK]) != mask_len)
11835                         return -EINVAL;
11836                 if (pat_len > coalesce->pattern_max_len ||
11837                     pat_len < coalesce->pattern_min_len)
11838                         return -EINVAL;
11839
11840                 if (!pat_tb[NL80211_PKTPAT_OFFSET])
11841                         pkt_offset = 0;
11842                 else
11843                         pkt_offset = nla_get_u32(pat_tb[NL80211_PKTPAT_OFFSET]);
11844                 if (pkt_offset > coalesce->max_pkt_offset)
11845                         return -EINVAL;
11846                 new_rule->patterns[i].pkt_offset = pkt_offset;
11847
11848                 mask_pat = kmalloc(mask_len + pat_len, GFP_KERNEL);
11849                 if (!mask_pat)
11850                         return -ENOMEM;
11851
11852                 new_rule->patterns[i].mask = mask_pat;
11853                 memcpy(mask_pat, nla_data(pat_tb[NL80211_PKTPAT_MASK]),
11854                        mask_len);
11855
11856                 mask_pat += mask_len;
11857                 new_rule->patterns[i].pattern = mask_pat;
11858                 new_rule->patterns[i].pattern_len = pat_len;
11859                 memcpy(mask_pat, nla_data(pat_tb[NL80211_PKTPAT_PATTERN]),
11860                        pat_len);
11861                 i++;
11862         }
11863
11864         return 0;
11865 }
11866
11867 static int nl80211_set_coalesce(struct sk_buff *skb, struct genl_info *info)
11868 {
11869         struct cfg80211_registered_device *rdev = info->user_ptr[0];
11870         const struct wiphy_coalesce_support *coalesce = rdev->wiphy.coalesce;
11871         struct cfg80211_coalesce new_coalesce = {};
11872         struct cfg80211_coalesce *n_coalesce;
11873         int err, rem_rule, n_rules = 0, i, j;
11874         struct nlattr *rule;
11875         struct cfg80211_coalesce_rules *tmp_rule;
11876
11877         if (!rdev->wiphy.coalesce || !rdev->ops->set_coalesce)
11878                 return -EOPNOTSUPP;
11879
11880         if (!info->attrs[NL80211_ATTR_COALESCE_RULE]) {
11881                 cfg80211_rdev_free_coalesce(rdev);
11882                 rdev_set_coalesce(rdev, NULL);
11883                 return 0;
11884         }
11885
11886         nla_for_each_nested(rule, info->attrs[NL80211_ATTR_COALESCE_RULE],
11887                             rem_rule)
11888                 n_rules++;
11889         if (n_rules > coalesce->n_rules)
11890                 return -EINVAL;
11891
11892         new_coalesce.rules = kcalloc(n_rules, sizeof(new_coalesce.rules[0]),
11893                                      GFP_KERNEL);
11894         if (!new_coalesce.rules)
11895                 return -ENOMEM;
11896
11897         new_coalesce.n_rules = n_rules;
11898         i = 0;
11899
11900         nla_for_each_nested(rule, info->attrs[NL80211_ATTR_COALESCE_RULE],
11901                             rem_rule) {
11902                 err = nl80211_parse_coalesce_rule(rdev, rule,
11903                                                   &new_coalesce.rules[i]);
11904                 if (err)
11905                         goto error;
11906
11907                 i++;
11908         }
11909
11910         err = rdev_set_coalesce(rdev, &new_coalesce);
11911         if (err)
11912                 goto error;
11913
11914         n_coalesce = kmemdup(&new_coalesce, sizeof(new_coalesce), GFP_KERNEL);
11915         if (!n_coalesce) {
11916                 err = -ENOMEM;
11917                 goto error;
11918         }
11919         cfg80211_rdev_free_coalesce(rdev);
11920         rdev->coalesce = n_coalesce;
11921
11922         return 0;
11923 error:
11924         for (i = 0; i < new_coalesce.n_rules; i++) {
11925                 tmp_rule = &new_coalesce.rules[i];
11926                 for (j = 0; j < tmp_rule->n_patterns; j++)
11927                         kfree(tmp_rule->patterns[j].mask);
11928                 kfree(tmp_rule->patterns);
11929         }
11930         kfree(new_coalesce.rules);
11931
11932         return err;
11933 }
11934
11935 static int nl80211_set_rekey_data(struct sk_buff *skb, struct genl_info *info)
11936 {
11937         struct cfg80211_registered_device *rdev = info->user_ptr[0];
11938         struct net_device *dev = info->user_ptr[1];
11939         struct wireless_dev *wdev = dev->ieee80211_ptr;
11940         struct nlattr *tb[NUM_NL80211_REKEY_DATA];
11941         struct cfg80211_gtk_rekey_data rekey_data;
11942         int err;
11943
11944         if (!info->attrs[NL80211_ATTR_REKEY_DATA])
11945                 return -EINVAL;
11946
11947         err = nla_parse_nested_deprecated(tb, MAX_NL80211_REKEY_DATA,
11948                                           info->attrs[NL80211_ATTR_REKEY_DATA],
11949                                           nl80211_rekey_policy, info->extack);
11950         if (err)
11951                 return err;
11952
11953         if (!tb[NL80211_REKEY_DATA_REPLAY_CTR] || !tb[NL80211_REKEY_DATA_KEK] ||
11954             !tb[NL80211_REKEY_DATA_KCK])
11955                 return -EINVAL;
11956         if (nla_len(tb[NL80211_REKEY_DATA_REPLAY_CTR]) != NL80211_REPLAY_CTR_LEN)
11957                 return -ERANGE;
11958         if (nla_len(tb[NL80211_REKEY_DATA_KEK]) != NL80211_KEK_LEN)
11959                 return -ERANGE;
11960         if (nla_len(tb[NL80211_REKEY_DATA_KCK]) != NL80211_KCK_LEN)
11961                 return -ERANGE;
11962
11963         rekey_data.kek = nla_data(tb[NL80211_REKEY_DATA_KEK]);
11964         rekey_data.kck = nla_data(tb[NL80211_REKEY_DATA_KCK]);
11965         rekey_data.replay_ctr = nla_data(tb[NL80211_REKEY_DATA_REPLAY_CTR]);
11966
11967         wdev_lock(wdev);
11968         if (!wdev->current_bss) {
11969                 err = -ENOTCONN;
11970                 goto out;
11971         }
11972
11973         if (!rdev->ops->set_rekey_data) {
11974                 err = -EOPNOTSUPP;
11975                 goto out;
11976         }
11977
11978         err = rdev_set_rekey_data(rdev, dev, &rekey_data);
11979  out:
11980         wdev_unlock(wdev);
11981         return err;
11982 }
11983
11984 static int nl80211_register_unexpected_frame(struct sk_buff *skb,
11985                                              struct genl_info *info)
11986 {
11987         struct net_device *dev = info->user_ptr[1];
11988         struct wireless_dev *wdev = dev->ieee80211_ptr;
11989
11990         if (wdev->iftype != NL80211_IFTYPE_AP &&
11991             wdev->iftype != NL80211_IFTYPE_P2P_GO)
11992                 return -EINVAL;
11993
11994         if (wdev->ap_unexpected_nlportid)
11995                 return -EBUSY;
11996
11997         wdev->ap_unexpected_nlportid = info->snd_portid;
11998         return 0;
11999 }
12000
12001 static int nl80211_probe_client(struct sk_buff *skb,
12002                                 struct genl_info *info)
12003 {
12004         struct cfg80211_registered_device *rdev = info->user_ptr[0];
12005         struct net_device *dev = info->user_ptr[1];
12006         struct wireless_dev *wdev = dev->ieee80211_ptr;
12007         struct sk_buff *msg;
12008         void *hdr;
12009         const u8 *addr;
12010         u64 cookie;
12011         int err;
12012
12013         if (wdev->iftype != NL80211_IFTYPE_AP &&
12014             wdev->iftype != NL80211_IFTYPE_P2P_GO)
12015                 return -EOPNOTSUPP;
12016
12017         if (!info->attrs[NL80211_ATTR_MAC])
12018                 return -EINVAL;
12019
12020         if (!rdev->ops->probe_client)
12021                 return -EOPNOTSUPP;
12022
12023         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
12024         if (!msg)
12025                 return -ENOMEM;
12026
12027         hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
12028                              NL80211_CMD_PROBE_CLIENT);
12029         if (!hdr) {
12030                 err = -ENOBUFS;
12031                 goto free_msg;
12032         }
12033
12034         addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
12035
12036         err = rdev_probe_client(rdev, dev, addr, &cookie);
12037         if (err)
12038                 goto free_msg;
12039
12040         if (nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, cookie,
12041                               NL80211_ATTR_PAD))
12042                 goto nla_put_failure;
12043
12044         genlmsg_end(msg, hdr);
12045
12046         return genlmsg_reply(msg, info);
12047
12048  nla_put_failure:
12049         err = -ENOBUFS;
12050  free_msg:
12051         nlmsg_free(msg);
12052         return err;
12053 }
12054
12055 static int nl80211_register_beacons(struct sk_buff *skb, struct genl_info *info)
12056 {
12057         struct cfg80211_registered_device *rdev = info->user_ptr[0];
12058         struct cfg80211_beacon_registration *reg, *nreg;
12059         int rv;
12060
12061         if (!(rdev->wiphy.flags & WIPHY_FLAG_REPORTS_OBSS))
12062                 return -EOPNOTSUPP;
12063
12064         nreg = kzalloc(sizeof(*nreg), GFP_KERNEL);
12065         if (!nreg)
12066                 return -ENOMEM;
12067
12068         /* First, check if already registered. */
12069         spin_lock_bh(&rdev->beacon_registrations_lock);
12070         list_for_each_entry(reg, &rdev->beacon_registrations, list) {
12071                 if (reg->nlportid == info->snd_portid) {
12072                         rv = -EALREADY;
12073                         goto out_err;
12074                 }
12075         }
12076         /* Add it to the list */
12077         nreg->nlportid = info->snd_portid;
12078         list_add(&nreg->list, &rdev->beacon_registrations);
12079
12080         spin_unlock_bh(&rdev->beacon_registrations_lock);
12081
12082         return 0;
12083 out_err:
12084         spin_unlock_bh(&rdev->beacon_registrations_lock);
12085         kfree(nreg);
12086         return rv;
12087 }
12088
12089 static int nl80211_start_p2p_device(struct sk_buff *skb, struct genl_info *info)
12090 {
12091         struct cfg80211_registered_device *rdev = info->user_ptr[0];
12092         struct wireless_dev *wdev = info->user_ptr[1];
12093         int err;
12094
12095         if (!rdev->ops->start_p2p_device)
12096                 return -EOPNOTSUPP;
12097
12098         if (wdev->iftype != NL80211_IFTYPE_P2P_DEVICE)
12099                 return -EOPNOTSUPP;
12100
12101         if (wdev_running(wdev))
12102                 return 0;
12103
12104         if (rfkill_blocked(rdev->rfkill))
12105                 return -ERFKILL;
12106
12107         err = rdev_start_p2p_device(rdev, wdev);
12108         if (err)
12109                 return err;
12110
12111         wdev->is_running = true;
12112         rdev->opencount++;
12113
12114         return 0;
12115 }
12116
12117 static int nl80211_stop_p2p_device(struct sk_buff *skb, struct genl_info *info)
12118 {
12119         struct cfg80211_registered_device *rdev = info->user_ptr[0];
12120         struct wireless_dev *wdev = info->user_ptr[1];
12121
12122         if (wdev->iftype != NL80211_IFTYPE_P2P_DEVICE)
12123                 return -EOPNOTSUPP;
12124
12125         if (!rdev->ops->stop_p2p_device)
12126                 return -EOPNOTSUPP;
12127
12128         cfg80211_stop_p2p_device(rdev, wdev);
12129
12130         return 0;
12131 }
12132
12133 static int nl80211_start_nan(struct sk_buff *skb, struct genl_info *info)
12134 {
12135         struct cfg80211_registered_device *rdev = info->user_ptr[0];
12136         struct wireless_dev *wdev = info->user_ptr[1];
12137         struct cfg80211_nan_conf conf = {};
12138         int err;
12139
12140         if (wdev->iftype != NL80211_IFTYPE_NAN)
12141                 return -EOPNOTSUPP;
12142
12143         if (wdev_running(wdev))
12144                 return -EEXIST;
12145
12146         if (rfkill_blocked(rdev->rfkill))
12147                 return -ERFKILL;
12148
12149         if (!info->attrs[NL80211_ATTR_NAN_MASTER_PREF])
12150                 return -EINVAL;
12151
12152         conf.master_pref =
12153                 nla_get_u8(info->attrs[NL80211_ATTR_NAN_MASTER_PREF]);
12154
12155         if (info->attrs[NL80211_ATTR_BANDS]) {
12156                 u32 bands = nla_get_u32(info->attrs[NL80211_ATTR_BANDS]);
12157
12158                 if (bands & ~(u32)wdev->wiphy->nan_supported_bands)
12159                         return -EOPNOTSUPP;
12160
12161                 if (bands && !(bands & BIT(NL80211_BAND_2GHZ)))
12162                         return -EINVAL;
12163
12164                 conf.bands = bands;
12165         }
12166
12167         err = rdev_start_nan(rdev, wdev, &conf);
12168         if (err)
12169                 return err;
12170
12171         wdev->is_running = true;
12172         rdev->opencount++;
12173
12174         return 0;
12175 }
12176
12177 static int nl80211_stop_nan(struct sk_buff *skb, struct genl_info *info)
12178 {
12179         struct cfg80211_registered_device *rdev = info->user_ptr[0];
12180         struct wireless_dev *wdev = info->user_ptr[1];
12181
12182         if (wdev->iftype != NL80211_IFTYPE_NAN)
12183                 return -EOPNOTSUPP;
12184
12185         cfg80211_stop_nan(rdev, wdev);
12186
12187         return 0;
12188 }
12189
12190 static int validate_nan_filter(struct nlattr *filter_attr)
12191 {
12192         struct nlattr *attr;
12193         int len = 0, n_entries = 0, rem;
12194
12195         nla_for_each_nested(attr, filter_attr, rem) {
12196                 len += nla_len(attr);
12197                 n_entries++;
12198         }
12199
12200         if (len >= U8_MAX)
12201                 return -EINVAL;
12202
12203         return n_entries;
12204 }
12205
12206 static int handle_nan_filter(struct nlattr *attr_filter,
12207                              struct cfg80211_nan_func *func,
12208                              bool tx)
12209 {
12210         struct nlattr *attr;
12211         int n_entries, rem, i;
12212         struct cfg80211_nan_func_filter *filter;
12213
12214         n_entries = validate_nan_filter(attr_filter);
12215         if (n_entries < 0)
12216                 return n_entries;
12217
12218         BUILD_BUG_ON(sizeof(*func->rx_filters) != sizeof(*func->tx_filters));
12219
12220         filter = kcalloc(n_entries, sizeof(*func->rx_filters), GFP_KERNEL);
12221         if (!filter)
12222                 return -ENOMEM;
12223
12224         i = 0;
12225         nla_for_each_nested(attr, attr_filter, rem) {
12226                 filter[i].filter = nla_memdup(attr, GFP_KERNEL);
12227                 filter[i].len = nla_len(attr);
12228                 i++;
12229         }
12230         if (tx) {
12231                 func->num_tx_filters = n_entries;
12232                 func->tx_filters = filter;
12233         } else {
12234                 func->num_rx_filters = n_entries;
12235                 func->rx_filters = filter;
12236         }
12237
12238         return 0;
12239 }
12240
12241 static int nl80211_nan_add_func(struct sk_buff *skb,
12242                                 struct genl_info *info)
12243 {
12244         struct cfg80211_registered_device *rdev = info->user_ptr[0];
12245         struct wireless_dev *wdev = info->user_ptr[1];
12246         struct nlattr *tb[NUM_NL80211_NAN_FUNC_ATTR], *func_attr;
12247         struct cfg80211_nan_func *func;
12248         struct sk_buff *msg = NULL;
12249         void *hdr = NULL;
12250         int err = 0;
12251
12252         if (wdev->iftype != NL80211_IFTYPE_NAN)
12253                 return -EOPNOTSUPP;
12254
12255         if (!wdev_running(wdev))
12256                 return -ENOTCONN;
12257
12258         if (!info->attrs[NL80211_ATTR_NAN_FUNC])
12259                 return -EINVAL;
12260
12261         err = nla_parse_nested_deprecated(tb, NL80211_NAN_FUNC_ATTR_MAX,
12262                                           info->attrs[NL80211_ATTR_NAN_FUNC],
12263                                           nl80211_nan_func_policy,
12264                                           info->extack);
12265         if (err)
12266                 return err;
12267
12268         func = kzalloc(sizeof(*func), GFP_KERNEL);
12269         if (!func)
12270                 return -ENOMEM;
12271
12272         func->cookie = cfg80211_assign_cookie(rdev);
12273
12274         if (!tb[NL80211_NAN_FUNC_TYPE] ||
12275             nla_get_u8(tb[NL80211_NAN_FUNC_TYPE]) > NL80211_NAN_FUNC_MAX_TYPE) {
12276                 err = -EINVAL;
12277                 goto out;
12278         }
12279
12280
12281         func->type = nla_get_u8(tb[NL80211_NAN_FUNC_TYPE]);
12282
12283         if (!tb[NL80211_NAN_FUNC_SERVICE_ID]) {
12284                 err = -EINVAL;
12285                 goto out;
12286         }
12287
12288         memcpy(func->service_id, nla_data(tb[NL80211_NAN_FUNC_SERVICE_ID]),
12289                sizeof(func->service_id));
12290
12291         func->close_range =
12292                 nla_get_flag(tb[NL80211_NAN_FUNC_CLOSE_RANGE]);
12293
12294         if (tb[NL80211_NAN_FUNC_SERVICE_INFO]) {
12295                 func->serv_spec_info_len =
12296                         nla_len(tb[NL80211_NAN_FUNC_SERVICE_INFO]);
12297                 func->serv_spec_info =
12298                         kmemdup(nla_data(tb[NL80211_NAN_FUNC_SERVICE_INFO]),
12299                                 func->serv_spec_info_len,
12300                                 GFP_KERNEL);
12301                 if (!func->serv_spec_info) {
12302                         err = -ENOMEM;
12303                         goto out;
12304                 }
12305         }
12306
12307         if (tb[NL80211_NAN_FUNC_TTL])
12308                 func->ttl = nla_get_u32(tb[NL80211_NAN_FUNC_TTL]);
12309
12310         switch (func->type) {
12311         case NL80211_NAN_FUNC_PUBLISH:
12312                 if (!tb[NL80211_NAN_FUNC_PUBLISH_TYPE]) {
12313                         err = -EINVAL;
12314                         goto out;
12315                 }
12316
12317                 func->publish_type =
12318                         nla_get_u8(tb[NL80211_NAN_FUNC_PUBLISH_TYPE]);
12319                 func->publish_bcast =
12320                         nla_get_flag(tb[NL80211_NAN_FUNC_PUBLISH_BCAST]);
12321
12322                 if ((!(func->publish_type & NL80211_NAN_SOLICITED_PUBLISH)) &&
12323                         func->publish_bcast) {
12324                         err = -EINVAL;
12325                         goto out;
12326                 }
12327                 break;
12328         case NL80211_NAN_FUNC_SUBSCRIBE:
12329                 func->subscribe_active =
12330                         nla_get_flag(tb[NL80211_NAN_FUNC_SUBSCRIBE_ACTIVE]);
12331                 break;
12332         case NL80211_NAN_FUNC_FOLLOW_UP:
12333                 if (!tb[NL80211_NAN_FUNC_FOLLOW_UP_ID] ||
12334                     !tb[NL80211_NAN_FUNC_FOLLOW_UP_REQ_ID] ||
12335                     !tb[NL80211_NAN_FUNC_FOLLOW_UP_DEST]) {
12336                         err = -EINVAL;
12337                         goto out;
12338                 }
12339
12340                 func->followup_id =
12341                         nla_get_u8(tb[NL80211_NAN_FUNC_FOLLOW_UP_ID]);
12342                 func->followup_reqid =
12343                         nla_get_u8(tb[NL80211_NAN_FUNC_FOLLOW_UP_REQ_ID]);
12344                 memcpy(func->followup_dest.addr,
12345                        nla_data(tb[NL80211_NAN_FUNC_FOLLOW_UP_DEST]),
12346                        sizeof(func->followup_dest.addr));
12347                 if (func->ttl) {
12348                         err = -EINVAL;
12349                         goto out;
12350                 }
12351                 break;
12352         default:
12353                 err = -EINVAL;
12354                 goto out;
12355         }
12356
12357         if (tb[NL80211_NAN_FUNC_SRF]) {
12358                 struct nlattr *srf_tb[NUM_NL80211_NAN_SRF_ATTR];
12359
12360                 err = nla_parse_nested_deprecated(srf_tb,
12361                                                   NL80211_NAN_SRF_ATTR_MAX,
12362                                                   tb[NL80211_NAN_FUNC_SRF],
12363                                                   nl80211_nan_srf_policy,
12364                                                   info->extack);
12365                 if (err)
12366                         goto out;
12367
12368                 func->srf_include =
12369                         nla_get_flag(srf_tb[NL80211_NAN_SRF_INCLUDE]);
12370
12371                 if (srf_tb[NL80211_NAN_SRF_BF]) {
12372                         if (srf_tb[NL80211_NAN_SRF_MAC_ADDRS] ||
12373                             !srf_tb[NL80211_NAN_SRF_BF_IDX]) {
12374                                 err = -EINVAL;
12375                                 goto out;
12376                         }
12377
12378                         func->srf_bf_len =
12379                                 nla_len(srf_tb[NL80211_NAN_SRF_BF]);
12380                         func->srf_bf =
12381                                 kmemdup(nla_data(srf_tb[NL80211_NAN_SRF_BF]),
12382                                         func->srf_bf_len, GFP_KERNEL);
12383                         if (!func->srf_bf) {
12384                                 err = -ENOMEM;
12385                                 goto out;
12386                         }
12387
12388                         func->srf_bf_idx =
12389                                 nla_get_u8(srf_tb[NL80211_NAN_SRF_BF_IDX]);
12390                 } else {
12391                         struct nlattr *attr, *mac_attr =
12392                                 srf_tb[NL80211_NAN_SRF_MAC_ADDRS];
12393                         int n_entries, rem, i = 0;
12394
12395                         if (!mac_attr) {
12396                                 err = -EINVAL;
12397                                 goto out;
12398                         }
12399
12400                         n_entries = validate_acl_mac_addrs(mac_attr);
12401                         if (n_entries <= 0) {
12402                                 err = -EINVAL;
12403                                 goto out;
12404                         }
12405
12406                         func->srf_num_macs = n_entries;
12407                         func->srf_macs =
12408                                 kcalloc(n_entries, sizeof(*func->srf_macs),
12409                                         GFP_KERNEL);
12410                         if (!func->srf_macs) {
12411                                 err = -ENOMEM;
12412                                 goto out;
12413                         }
12414
12415                         nla_for_each_nested(attr, mac_attr, rem)
12416                                 memcpy(func->srf_macs[i++].addr, nla_data(attr),
12417                                        sizeof(*func->srf_macs));
12418                 }
12419         }
12420
12421         if (tb[NL80211_NAN_FUNC_TX_MATCH_FILTER]) {
12422                 err = handle_nan_filter(tb[NL80211_NAN_FUNC_TX_MATCH_FILTER],
12423                                         func, true);
12424                 if (err)
12425                         goto out;
12426         }
12427
12428         if (tb[NL80211_NAN_FUNC_RX_MATCH_FILTER]) {
12429                 err = handle_nan_filter(tb[NL80211_NAN_FUNC_RX_MATCH_FILTER],
12430                                         func, false);
12431                 if (err)
12432                         goto out;
12433         }
12434
12435         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
12436         if (!msg) {
12437                 err = -ENOMEM;
12438                 goto out;
12439         }
12440
12441         hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
12442                              NL80211_CMD_ADD_NAN_FUNCTION);
12443         /* This can't really happen - we just allocated 4KB */
12444         if (WARN_ON(!hdr)) {
12445                 err = -ENOMEM;
12446                 goto out;
12447         }
12448
12449         err = rdev_add_nan_func(rdev, wdev, func);
12450 out:
12451         if (err < 0) {
12452                 cfg80211_free_nan_func(func);
12453                 nlmsg_free(msg);
12454                 return err;
12455         }
12456
12457         /* propagate the instance id and cookie to userspace  */
12458         if (nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, func->cookie,
12459                               NL80211_ATTR_PAD))
12460                 goto nla_put_failure;
12461
12462         func_attr = nla_nest_start_noflag(msg, NL80211_ATTR_NAN_FUNC);
12463         if (!func_attr)
12464                 goto nla_put_failure;
12465
12466         if (nla_put_u8(msg, NL80211_NAN_FUNC_INSTANCE_ID,
12467                        func->instance_id))
12468                 goto nla_put_failure;
12469
12470         nla_nest_end(msg, func_attr);
12471
12472         genlmsg_end(msg, hdr);
12473         return genlmsg_reply(msg, info);
12474
12475 nla_put_failure:
12476         nlmsg_free(msg);
12477         return -ENOBUFS;
12478 }
12479
12480 static int nl80211_nan_del_func(struct sk_buff *skb,
12481                                struct genl_info *info)
12482 {
12483         struct cfg80211_registered_device *rdev = info->user_ptr[0];
12484         struct wireless_dev *wdev = info->user_ptr[1];
12485         u64 cookie;
12486
12487         if (wdev->iftype != NL80211_IFTYPE_NAN)
12488                 return -EOPNOTSUPP;
12489
12490         if (!wdev_running(wdev))
12491                 return -ENOTCONN;
12492
12493         if (!info->attrs[NL80211_ATTR_COOKIE])
12494                 return -EINVAL;
12495
12496         cookie = nla_get_u64(info->attrs[NL80211_ATTR_COOKIE]);
12497
12498         rdev_del_nan_func(rdev, wdev, cookie);
12499
12500         return 0;
12501 }
12502
12503 static int nl80211_nan_change_config(struct sk_buff *skb,
12504                                      struct genl_info *info)
12505 {
12506         struct cfg80211_registered_device *rdev = info->user_ptr[0];
12507         struct wireless_dev *wdev = info->user_ptr[1];
12508         struct cfg80211_nan_conf conf = {};
12509         u32 changed = 0;
12510
12511         if (wdev->iftype != NL80211_IFTYPE_NAN)
12512                 return -EOPNOTSUPP;
12513
12514         if (!wdev_running(wdev))
12515                 return -ENOTCONN;
12516
12517         if (info->attrs[NL80211_ATTR_NAN_MASTER_PREF]) {
12518                 conf.master_pref =
12519                         nla_get_u8(info->attrs[NL80211_ATTR_NAN_MASTER_PREF]);
12520                 if (conf.master_pref <= 1 || conf.master_pref == 255)
12521                         return -EINVAL;
12522
12523                 changed |= CFG80211_NAN_CONF_CHANGED_PREF;
12524         }
12525
12526         if (info->attrs[NL80211_ATTR_BANDS]) {
12527                 u32 bands = nla_get_u32(info->attrs[NL80211_ATTR_BANDS]);
12528
12529                 if (bands & ~(u32)wdev->wiphy->nan_supported_bands)
12530                         return -EOPNOTSUPP;
12531
12532                 if (bands && !(bands & BIT(NL80211_BAND_2GHZ)))
12533                         return -EINVAL;
12534
12535                 conf.bands = bands;
12536                 changed |= CFG80211_NAN_CONF_CHANGED_BANDS;
12537         }
12538
12539         if (!changed)
12540                 return -EINVAL;
12541
12542         return rdev_nan_change_conf(rdev, wdev, &conf, changed);
12543 }
12544
12545 void cfg80211_nan_match(struct wireless_dev *wdev,
12546                         struct cfg80211_nan_match_params *match, gfp_t gfp)
12547 {
12548         struct wiphy *wiphy = wdev->wiphy;
12549         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
12550         struct nlattr *match_attr, *local_func_attr, *peer_func_attr;
12551         struct sk_buff *msg;
12552         void *hdr;
12553
12554         if (WARN_ON(!match->inst_id || !match->peer_inst_id || !match->addr))
12555                 return;
12556
12557         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
12558         if (!msg)
12559                 return;
12560
12561         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_NAN_MATCH);
12562         if (!hdr) {
12563                 nlmsg_free(msg);
12564                 return;
12565         }
12566
12567         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
12568             (wdev->netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
12569                                          wdev->netdev->ifindex)) ||
12570             nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
12571                               NL80211_ATTR_PAD))
12572                 goto nla_put_failure;
12573
12574         if (nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, match->cookie,
12575                               NL80211_ATTR_PAD) ||
12576             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, match->addr))
12577                 goto nla_put_failure;
12578
12579         match_attr = nla_nest_start_noflag(msg, NL80211_ATTR_NAN_MATCH);
12580         if (!match_attr)
12581                 goto nla_put_failure;
12582
12583         local_func_attr = nla_nest_start_noflag(msg,
12584                                                 NL80211_NAN_MATCH_FUNC_LOCAL);
12585         if (!local_func_attr)
12586                 goto nla_put_failure;
12587
12588         if (nla_put_u8(msg, NL80211_NAN_FUNC_INSTANCE_ID, match->inst_id))
12589                 goto nla_put_failure;
12590
12591         nla_nest_end(msg, local_func_attr);
12592
12593         peer_func_attr = nla_nest_start_noflag(msg,
12594                                                NL80211_NAN_MATCH_FUNC_PEER);
12595         if (!peer_func_attr)
12596                 goto nla_put_failure;
12597
12598         if (nla_put_u8(msg, NL80211_NAN_FUNC_TYPE, match->type) ||
12599             nla_put_u8(msg, NL80211_NAN_FUNC_INSTANCE_ID, match->peer_inst_id))
12600                 goto nla_put_failure;
12601
12602         if (match->info && match->info_len &&
12603             nla_put(msg, NL80211_NAN_FUNC_SERVICE_INFO, match->info_len,
12604                     match->info))
12605                 goto nla_put_failure;
12606
12607         nla_nest_end(msg, peer_func_attr);
12608         nla_nest_end(msg, match_attr);
12609         genlmsg_end(msg, hdr);
12610
12611         if (!wdev->owner_nlportid)
12612                 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy),
12613                                         msg, 0, NL80211_MCGRP_NAN, gfp);
12614         else
12615                 genlmsg_unicast(wiphy_net(&rdev->wiphy), msg,
12616                                 wdev->owner_nlportid);
12617
12618         return;
12619
12620 nla_put_failure:
12621         nlmsg_free(msg);
12622 }
12623 EXPORT_SYMBOL(cfg80211_nan_match);
12624
12625 void cfg80211_nan_func_terminated(struct wireless_dev *wdev,
12626                                   u8 inst_id,
12627                                   enum nl80211_nan_func_term_reason reason,
12628                                   u64 cookie, gfp_t gfp)
12629 {
12630         struct wiphy *wiphy = wdev->wiphy;
12631         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
12632         struct sk_buff *msg;
12633         struct nlattr *func_attr;
12634         void *hdr;
12635
12636         if (WARN_ON(!inst_id))
12637                 return;
12638
12639         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
12640         if (!msg)
12641                 return;
12642
12643         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_DEL_NAN_FUNCTION);
12644         if (!hdr) {
12645                 nlmsg_free(msg);
12646                 return;
12647         }
12648
12649         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
12650             (wdev->netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
12651                                          wdev->netdev->ifindex)) ||
12652             nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
12653                               NL80211_ATTR_PAD))
12654                 goto nla_put_failure;
12655
12656         if (nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, cookie,
12657                               NL80211_ATTR_PAD))
12658                 goto nla_put_failure;
12659
12660         func_attr = nla_nest_start_noflag(msg, NL80211_ATTR_NAN_FUNC);
12661         if (!func_attr)
12662                 goto nla_put_failure;
12663
12664         if (nla_put_u8(msg, NL80211_NAN_FUNC_INSTANCE_ID, inst_id) ||
12665             nla_put_u8(msg, NL80211_NAN_FUNC_TERM_REASON, reason))
12666                 goto nla_put_failure;
12667
12668         nla_nest_end(msg, func_attr);
12669         genlmsg_end(msg, hdr);
12670
12671         if (!wdev->owner_nlportid)
12672                 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy),
12673                                         msg, 0, NL80211_MCGRP_NAN, gfp);
12674         else
12675                 genlmsg_unicast(wiphy_net(&rdev->wiphy), msg,
12676                                 wdev->owner_nlportid);
12677
12678         return;
12679
12680 nla_put_failure:
12681         nlmsg_free(msg);
12682 }
12683 EXPORT_SYMBOL(cfg80211_nan_func_terminated);
12684
12685 static int nl80211_get_protocol_features(struct sk_buff *skb,
12686                                          struct genl_info *info)
12687 {
12688         void *hdr;
12689         struct sk_buff *msg;
12690
12691         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
12692         if (!msg)
12693                 return -ENOMEM;
12694
12695         hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
12696                              NL80211_CMD_GET_PROTOCOL_FEATURES);
12697         if (!hdr)
12698                 goto nla_put_failure;
12699
12700         if (nla_put_u32(msg, NL80211_ATTR_PROTOCOL_FEATURES,
12701                         NL80211_PROTOCOL_FEATURE_SPLIT_WIPHY_DUMP))
12702                 goto nla_put_failure;
12703
12704         genlmsg_end(msg, hdr);
12705         return genlmsg_reply(msg, info);
12706
12707  nla_put_failure:
12708         kfree_skb(msg);
12709         return -ENOBUFS;
12710 }
12711
12712 static int nl80211_update_ft_ies(struct sk_buff *skb, struct genl_info *info)
12713 {
12714         struct cfg80211_registered_device *rdev = info->user_ptr[0];
12715         struct cfg80211_update_ft_ies_params ft_params;
12716         struct net_device *dev = info->user_ptr[1];
12717
12718         if (!rdev->ops->update_ft_ies)
12719                 return -EOPNOTSUPP;
12720
12721         if (!info->attrs[NL80211_ATTR_MDID] ||
12722             !info->attrs[NL80211_ATTR_IE])
12723                 return -EINVAL;
12724
12725         memset(&ft_params, 0, sizeof(ft_params));
12726         ft_params.md = nla_get_u16(info->attrs[NL80211_ATTR_MDID]);
12727         ft_params.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
12728         ft_params.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
12729
12730         return rdev_update_ft_ies(rdev, dev, &ft_params);
12731 }
12732
12733 static int nl80211_crit_protocol_start(struct sk_buff *skb,
12734                                        struct genl_info *info)
12735 {
12736         struct cfg80211_registered_device *rdev = info->user_ptr[0];
12737         struct wireless_dev *wdev = info->user_ptr[1];
12738         enum nl80211_crit_proto_id proto = NL80211_CRIT_PROTO_UNSPEC;
12739         u16 duration;
12740         int ret;
12741
12742         if (!rdev->ops->crit_proto_start)
12743                 return -EOPNOTSUPP;
12744
12745         if (WARN_ON(!rdev->ops->crit_proto_stop))
12746                 return -EINVAL;
12747
12748         if (rdev->crit_proto_nlportid)
12749                 return -EBUSY;
12750
12751         /* determine protocol if provided */
12752         if (info->attrs[NL80211_ATTR_CRIT_PROT_ID])
12753                 proto = nla_get_u16(info->attrs[NL80211_ATTR_CRIT_PROT_ID]);
12754
12755         if (proto >= NUM_NL80211_CRIT_PROTO)
12756                 return -EINVAL;
12757
12758         /* timeout must be provided */
12759         if (!info->attrs[NL80211_ATTR_MAX_CRIT_PROT_DURATION])
12760                 return -EINVAL;
12761
12762         duration =
12763                 nla_get_u16(info->attrs[NL80211_ATTR_MAX_CRIT_PROT_DURATION]);
12764
12765         if (duration > NL80211_CRIT_PROTO_MAX_DURATION)
12766                 return -ERANGE;
12767
12768         ret = rdev_crit_proto_start(rdev, wdev, proto, duration);
12769         if (!ret)
12770                 rdev->crit_proto_nlportid = info->snd_portid;
12771
12772         return ret;
12773 }
12774
12775 static int nl80211_crit_protocol_stop(struct sk_buff *skb,
12776                                       struct genl_info *info)
12777 {
12778         struct cfg80211_registered_device *rdev = info->user_ptr[0];
12779         struct wireless_dev *wdev = info->user_ptr[1];
12780
12781         if (!rdev->ops->crit_proto_stop)
12782                 return -EOPNOTSUPP;
12783
12784         if (rdev->crit_proto_nlportid) {
12785                 rdev->crit_proto_nlportid = 0;
12786                 rdev_crit_proto_stop(rdev, wdev);
12787         }
12788         return 0;
12789 }
12790
12791 static int nl80211_vendor_check_policy(const struct wiphy_vendor_command *vcmd,
12792                                        struct nlattr *attr,
12793                                        struct netlink_ext_ack *extack)
12794 {
12795         if (vcmd->policy == VENDOR_CMD_RAW_DATA) {
12796                 if (attr->nla_type & NLA_F_NESTED) {
12797                         NL_SET_ERR_MSG_ATTR(extack, attr,
12798                                             "unexpected nested data");
12799                         return -EINVAL;
12800                 }
12801
12802                 return 0;
12803         }
12804
12805         if (!(attr->nla_type & NLA_F_NESTED)) {
12806                 NL_SET_ERR_MSG_ATTR(extack, attr, "expected nested data");
12807                 return -EINVAL;
12808         }
12809
12810         return nl80211_validate_nested(attr, vcmd->maxattr, vcmd->policy,
12811                                        extack);
12812 }
12813
12814 static int nl80211_vendor_cmd(struct sk_buff *skb, struct genl_info *info)
12815 {
12816         struct cfg80211_registered_device *rdev = info->user_ptr[0];
12817         struct wireless_dev *wdev =
12818                 __cfg80211_wdev_from_attrs(genl_info_net(info), info->attrs);
12819         int i, err;
12820         u32 vid, subcmd;
12821
12822         if (!rdev->wiphy.vendor_commands)
12823                 return -EOPNOTSUPP;
12824
12825         if (IS_ERR(wdev)) {
12826                 err = PTR_ERR(wdev);
12827                 if (err != -EINVAL)
12828                         return err;
12829                 wdev = NULL;
12830         } else if (wdev->wiphy != &rdev->wiphy) {
12831                 return -EINVAL;
12832         }
12833
12834         if (!info->attrs[NL80211_ATTR_VENDOR_ID] ||
12835             !info->attrs[NL80211_ATTR_VENDOR_SUBCMD])
12836                 return -EINVAL;
12837
12838         vid = nla_get_u32(info->attrs[NL80211_ATTR_VENDOR_ID]);
12839         subcmd = nla_get_u32(info->attrs[NL80211_ATTR_VENDOR_SUBCMD]);
12840         for (i = 0; i < rdev->wiphy.n_vendor_commands; i++) {
12841                 const struct wiphy_vendor_command *vcmd;
12842                 void *data = NULL;
12843                 int len = 0;
12844
12845                 vcmd = &rdev->wiphy.vendor_commands[i];
12846
12847                 if (vcmd->info.vendor_id != vid || vcmd->info.subcmd != subcmd)
12848                         continue;
12849
12850                 if (vcmd->flags & (WIPHY_VENDOR_CMD_NEED_WDEV |
12851                                    WIPHY_VENDOR_CMD_NEED_NETDEV)) {
12852                         if (!wdev)
12853                                 return -EINVAL;
12854                         if (vcmd->flags & WIPHY_VENDOR_CMD_NEED_NETDEV &&
12855                             !wdev->netdev)
12856                                 return -EINVAL;
12857
12858                         if (vcmd->flags & WIPHY_VENDOR_CMD_NEED_RUNNING) {
12859                                 if (!wdev_running(wdev))
12860                                         return -ENETDOWN;
12861                         }
12862
12863                         if (!vcmd->doit)
12864                                 return -EOPNOTSUPP;
12865                 } else {
12866                         wdev = NULL;
12867                 }
12868
12869                 if (info->attrs[NL80211_ATTR_VENDOR_DATA]) {
12870                         data = nla_data(info->attrs[NL80211_ATTR_VENDOR_DATA]);
12871                         len = nla_len(info->attrs[NL80211_ATTR_VENDOR_DATA]);
12872
12873                         err = nl80211_vendor_check_policy(vcmd,
12874                                         info->attrs[NL80211_ATTR_VENDOR_DATA],
12875                                         info->extack);
12876                         if (err)
12877                                 return err;
12878                 }
12879
12880                 rdev->cur_cmd_info = info;
12881                 err = vcmd->doit(&rdev->wiphy, wdev, data, len);
12882                 rdev->cur_cmd_info = NULL;
12883                 return err;
12884         }
12885
12886         return -EOPNOTSUPP;
12887 }
12888
12889 static int nl80211_prepare_vendor_dump(struct sk_buff *skb,
12890                                        struct netlink_callback *cb,
12891                                        struct cfg80211_registered_device **rdev,
12892                                        struct wireless_dev **wdev)
12893 {
12894         struct nlattr **attrbuf;
12895         u32 vid, subcmd;
12896         unsigned int i;
12897         int vcmd_idx = -1;
12898         int err;
12899         void *data = NULL;
12900         unsigned int data_len = 0;
12901
12902         if (cb->args[0]) {
12903                 /* subtract the 1 again here */
12904                 struct wiphy *wiphy = wiphy_idx_to_wiphy(cb->args[0] - 1);
12905                 struct wireless_dev *tmp;
12906
12907                 if (!wiphy)
12908                         return -ENODEV;
12909                 *rdev = wiphy_to_rdev(wiphy);
12910                 *wdev = NULL;
12911
12912                 if (cb->args[1]) {
12913                         list_for_each_entry(tmp, &wiphy->wdev_list, list) {
12914                                 if (tmp->identifier == cb->args[1] - 1) {
12915                                         *wdev = tmp;
12916                                         break;
12917                                 }
12918                         }
12919                 }
12920
12921                 /* keep rtnl locked in successful case */
12922                 return 0;
12923         }
12924
12925         attrbuf = kcalloc(NUM_NL80211_ATTR, sizeof(*attrbuf), GFP_KERNEL);
12926         if (!attrbuf)
12927                 return -ENOMEM;
12928
12929         err = nlmsg_parse_deprecated(cb->nlh,
12930                                      GENL_HDRLEN + nl80211_fam.hdrsize,
12931                                      attrbuf, nl80211_fam.maxattr,
12932                                      nl80211_policy, NULL);
12933         if (err)
12934                 goto out;
12935
12936         if (!attrbuf[NL80211_ATTR_VENDOR_ID] ||
12937             !attrbuf[NL80211_ATTR_VENDOR_SUBCMD]) {
12938                 err = -EINVAL;
12939                 goto out;
12940         }
12941
12942         *wdev = __cfg80211_wdev_from_attrs(sock_net(skb->sk), attrbuf);
12943         if (IS_ERR(*wdev))
12944                 *wdev = NULL;
12945
12946         *rdev = __cfg80211_rdev_from_attrs(sock_net(skb->sk), attrbuf);
12947         if (IS_ERR(*rdev)) {
12948                 err = PTR_ERR(*rdev);
12949                 goto out;
12950         }
12951
12952         vid = nla_get_u32(attrbuf[NL80211_ATTR_VENDOR_ID]);
12953         subcmd = nla_get_u32(attrbuf[NL80211_ATTR_VENDOR_SUBCMD]);
12954
12955         for (i = 0; i < (*rdev)->wiphy.n_vendor_commands; i++) {
12956                 const struct wiphy_vendor_command *vcmd;
12957
12958                 vcmd = &(*rdev)->wiphy.vendor_commands[i];
12959
12960                 if (vcmd->info.vendor_id != vid || vcmd->info.subcmd != subcmd)
12961                         continue;
12962
12963                 if (!vcmd->dumpit) {
12964                         err = -EOPNOTSUPP;
12965                         goto out;
12966                 }
12967
12968                 vcmd_idx = i;
12969                 break;
12970         }
12971
12972         if (vcmd_idx < 0) {
12973                 err = -EOPNOTSUPP;
12974                 goto out;
12975         }
12976
12977         if (attrbuf[NL80211_ATTR_VENDOR_DATA]) {
12978                 data = nla_data(attrbuf[NL80211_ATTR_VENDOR_DATA]);
12979                 data_len = nla_len(attrbuf[NL80211_ATTR_VENDOR_DATA]);
12980
12981                 err = nl80211_vendor_check_policy(
12982                                 &(*rdev)->wiphy.vendor_commands[vcmd_idx],
12983                                 attrbuf[NL80211_ATTR_VENDOR_DATA],
12984                                 cb->extack);
12985                 if (err)
12986                         goto out;
12987         }
12988
12989         /* 0 is the first index - add 1 to parse only once */
12990         cb->args[0] = (*rdev)->wiphy_idx + 1;
12991         /* add 1 to know if it was NULL */
12992         cb->args[1] = *wdev ? (*wdev)->identifier + 1 : 0;
12993         cb->args[2] = vcmd_idx;
12994         cb->args[3] = (unsigned long)data;
12995         cb->args[4] = data_len;
12996
12997         /* keep rtnl locked in successful case */
12998         err = 0;
12999 out:
13000         kfree(attrbuf);
13001         return err;
13002 }
13003
13004 static int nl80211_vendor_cmd_dump(struct sk_buff *skb,
13005                                    struct netlink_callback *cb)
13006 {
13007         struct cfg80211_registered_device *rdev;
13008         struct wireless_dev *wdev;
13009         unsigned int vcmd_idx;
13010         const struct wiphy_vendor_command *vcmd;
13011         void *data;
13012         int data_len;
13013         int err;
13014         struct nlattr *vendor_data;
13015
13016         rtnl_lock();
13017         err = nl80211_prepare_vendor_dump(skb, cb, &rdev, &wdev);
13018         if (err)
13019                 goto out;
13020
13021         vcmd_idx = cb->args[2];
13022         data = (void *)cb->args[3];
13023         data_len = cb->args[4];
13024         vcmd = &rdev->wiphy.vendor_commands[vcmd_idx];
13025
13026         if (vcmd->flags & (WIPHY_VENDOR_CMD_NEED_WDEV |
13027                            WIPHY_VENDOR_CMD_NEED_NETDEV)) {
13028                 if (!wdev) {
13029                         err = -EINVAL;
13030                         goto out;
13031                 }
13032                 if (vcmd->flags & WIPHY_VENDOR_CMD_NEED_NETDEV &&
13033                     !wdev->netdev) {
13034                         err = -EINVAL;
13035                         goto out;
13036                 }
13037
13038                 if (vcmd->flags & WIPHY_VENDOR_CMD_NEED_RUNNING) {
13039                         if (!wdev_running(wdev)) {
13040                                 err = -ENETDOWN;
13041                                 goto out;
13042                         }
13043                 }
13044         }
13045
13046         while (1) {
13047                 void *hdr = nl80211hdr_put(skb, NETLINK_CB(cb->skb).portid,
13048                                            cb->nlh->nlmsg_seq, NLM_F_MULTI,
13049                                            NL80211_CMD_VENDOR);
13050                 if (!hdr)
13051                         break;
13052
13053                 if (nla_put_u32(skb, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
13054                     (wdev && nla_put_u64_64bit(skb, NL80211_ATTR_WDEV,
13055                                                wdev_id(wdev),
13056                                                NL80211_ATTR_PAD))) {
13057                         genlmsg_cancel(skb, hdr);
13058                         break;
13059                 }
13060
13061                 vendor_data = nla_nest_start_noflag(skb,
13062                                                     NL80211_ATTR_VENDOR_DATA);
13063                 if (!vendor_data) {
13064                         genlmsg_cancel(skb, hdr);
13065                         break;
13066                 }
13067
13068                 err = vcmd->dumpit(&rdev->wiphy, wdev, skb, data, data_len,
13069                                    (unsigned long *)&cb->args[5]);
13070                 nla_nest_end(skb, vendor_data);
13071
13072                 if (err == -ENOBUFS || err == -ENOENT) {
13073                         genlmsg_cancel(skb, hdr);
13074                         break;
13075                 } else if (err) {
13076                         genlmsg_cancel(skb, hdr);
13077                         goto out;
13078                 }
13079
13080                 genlmsg_end(skb, hdr);
13081         }
13082
13083         err = skb->len;
13084  out:
13085         rtnl_unlock();
13086         return err;
13087 }
13088
13089 struct sk_buff *__cfg80211_alloc_reply_skb(struct wiphy *wiphy,
13090                                            enum nl80211_commands cmd,
13091                                            enum nl80211_attrs attr,
13092                                            int approxlen)
13093 {
13094         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
13095
13096         if (WARN_ON(!rdev->cur_cmd_info))
13097                 return NULL;
13098
13099         return __cfg80211_alloc_vendor_skb(rdev, NULL, approxlen,
13100                                            rdev->cur_cmd_info->snd_portid,
13101                                            rdev->cur_cmd_info->snd_seq,
13102                                            cmd, attr, NULL, GFP_KERNEL);
13103 }
13104 EXPORT_SYMBOL(__cfg80211_alloc_reply_skb);
13105
13106 int cfg80211_vendor_cmd_reply(struct sk_buff *skb)
13107 {
13108         struct cfg80211_registered_device *rdev = ((void **)skb->cb)[0];
13109         void *hdr = ((void **)skb->cb)[1];
13110         struct nlattr *data = ((void **)skb->cb)[2];
13111
13112         /* clear CB data for netlink core to own from now on */
13113         memset(skb->cb, 0, sizeof(skb->cb));
13114
13115         if (WARN_ON(!rdev->cur_cmd_info)) {
13116                 kfree_skb(skb);
13117                 return -EINVAL;
13118         }
13119
13120         nla_nest_end(skb, data);
13121         genlmsg_end(skb, hdr);
13122         return genlmsg_reply(skb, rdev->cur_cmd_info);
13123 }
13124 EXPORT_SYMBOL_GPL(cfg80211_vendor_cmd_reply);
13125
13126 unsigned int cfg80211_vendor_cmd_get_sender(struct wiphy *wiphy)
13127 {
13128         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
13129
13130         if (WARN_ON(!rdev->cur_cmd_info))
13131                 return 0;
13132
13133         return rdev->cur_cmd_info->snd_portid;
13134 }
13135 EXPORT_SYMBOL_GPL(cfg80211_vendor_cmd_get_sender);
13136
13137 static int nl80211_set_qos_map(struct sk_buff *skb,
13138                                struct genl_info *info)
13139 {
13140         struct cfg80211_registered_device *rdev = info->user_ptr[0];
13141         struct cfg80211_qos_map *qos_map = NULL;
13142         struct net_device *dev = info->user_ptr[1];
13143         u8 *pos, len, num_des, des_len, des;
13144         int ret;
13145
13146         if (!rdev->ops->set_qos_map)
13147                 return -EOPNOTSUPP;
13148
13149         if (info->attrs[NL80211_ATTR_QOS_MAP]) {
13150                 pos = nla_data(info->attrs[NL80211_ATTR_QOS_MAP]);
13151                 len = nla_len(info->attrs[NL80211_ATTR_QOS_MAP]);
13152
13153                 if (len % 2 || len < IEEE80211_QOS_MAP_LEN_MIN ||
13154                     len > IEEE80211_QOS_MAP_LEN_MAX)
13155                         return -EINVAL;
13156
13157                 qos_map = kzalloc(sizeof(struct cfg80211_qos_map), GFP_KERNEL);
13158                 if (!qos_map)
13159                         return -ENOMEM;
13160
13161                 num_des = (len - IEEE80211_QOS_MAP_LEN_MIN) >> 1;
13162                 if (num_des) {
13163                         des_len = num_des *
13164                                 sizeof(struct cfg80211_dscp_exception);
13165                         memcpy(qos_map->dscp_exception, pos, des_len);
13166                         qos_map->num_des = num_des;
13167                         for (des = 0; des < num_des; des++) {
13168                                 if (qos_map->dscp_exception[des].up > 7) {
13169                                         kfree(qos_map);
13170                                         return -EINVAL;
13171                                 }
13172                         }
13173                         pos += des_len;
13174                 }
13175                 memcpy(qos_map->up, pos, IEEE80211_QOS_MAP_LEN_MIN);
13176         }
13177
13178         wdev_lock(dev->ieee80211_ptr);
13179         ret = nl80211_key_allowed(dev->ieee80211_ptr);
13180         if (!ret)
13181                 ret = rdev_set_qos_map(rdev, dev, qos_map);
13182         wdev_unlock(dev->ieee80211_ptr);
13183
13184         kfree(qos_map);
13185         return ret;
13186 }
13187
13188 static int nl80211_add_tx_ts(struct sk_buff *skb, struct genl_info *info)
13189 {
13190         struct cfg80211_registered_device *rdev = info->user_ptr[0];
13191         struct net_device *dev = info->user_ptr[1];
13192         struct wireless_dev *wdev = dev->ieee80211_ptr;
13193         const u8 *peer;
13194         u8 tsid, up;
13195         u16 admitted_time = 0;
13196         int err;
13197
13198         if (!(rdev->wiphy.features & NL80211_FEATURE_SUPPORTS_WMM_ADMISSION))
13199                 return -EOPNOTSUPP;
13200
13201         if (!info->attrs[NL80211_ATTR_TSID] || !info->attrs[NL80211_ATTR_MAC] ||
13202             !info->attrs[NL80211_ATTR_USER_PRIO])
13203                 return -EINVAL;
13204
13205         tsid = nla_get_u8(info->attrs[NL80211_ATTR_TSID]);
13206         up = nla_get_u8(info->attrs[NL80211_ATTR_USER_PRIO]);
13207
13208         /* WMM uses TIDs 0-7 even for TSPEC */
13209         if (tsid >= IEEE80211_FIRST_TSPEC_TSID) {
13210                 /* TODO: handle 802.11 TSPEC/admission control
13211                  * need more attributes for that (e.g. BA session requirement);
13212                  * change the WMM adminssion test above to allow both then
13213                  */
13214                 return -EINVAL;
13215         }
13216
13217         peer = nla_data(info->attrs[NL80211_ATTR_MAC]);
13218
13219         if (info->attrs[NL80211_ATTR_ADMITTED_TIME]) {
13220                 admitted_time =
13221                         nla_get_u16(info->attrs[NL80211_ATTR_ADMITTED_TIME]);
13222                 if (!admitted_time)
13223                         return -EINVAL;
13224         }
13225
13226         wdev_lock(wdev);
13227         switch (wdev->iftype) {
13228         case NL80211_IFTYPE_STATION:
13229         case NL80211_IFTYPE_P2P_CLIENT:
13230                 if (wdev->current_bss)
13231                         break;
13232                 err = -ENOTCONN;
13233                 goto out;
13234         default:
13235                 err = -EOPNOTSUPP;
13236                 goto out;
13237         }
13238
13239         err = rdev_add_tx_ts(rdev, dev, tsid, peer, up, admitted_time);
13240
13241  out:
13242         wdev_unlock(wdev);
13243         return err;
13244 }
13245
13246 static int nl80211_del_tx_ts(struct sk_buff *skb, struct genl_info *info)
13247 {
13248         struct cfg80211_registered_device *rdev = info->user_ptr[0];
13249         struct net_device *dev = info->user_ptr[1];
13250         struct wireless_dev *wdev = dev->ieee80211_ptr;
13251         const u8 *peer;
13252         u8 tsid;
13253         int err;
13254
13255         if (!info->attrs[NL80211_ATTR_TSID] || !info->attrs[NL80211_ATTR_MAC])
13256                 return -EINVAL;
13257
13258         tsid = nla_get_u8(info->attrs[NL80211_ATTR_TSID]);
13259         peer = nla_data(info->attrs[NL80211_ATTR_MAC]);
13260
13261         wdev_lock(wdev);
13262         err = rdev_del_tx_ts(rdev, dev, tsid, peer);
13263         wdev_unlock(wdev);
13264
13265         return err;
13266 }
13267
13268 static int nl80211_tdls_channel_switch(struct sk_buff *skb,
13269                                        struct genl_info *info)
13270 {
13271         struct cfg80211_registered_device *rdev = info->user_ptr[0];
13272         struct net_device *dev = info->user_ptr[1];
13273         struct wireless_dev *wdev = dev->ieee80211_ptr;
13274         struct cfg80211_chan_def chandef = {};
13275         const u8 *addr;
13276         u8 oper_class;
13277         int err;
13278
13279         if (!rdev->ops->tdls_channel_switch ||
13280             !(rdev->wiphy.features & NL80211_FEATURE_TDLS_CHANNEL_SWITCH))
13281                 return -EOPNOTSUPP;
13282
13283         switch (dev->ieee80211_ptr->iftype) {
13284         case NL80211_IFTYPE_STATION:
13285         case NL80211_IFTYPE_P2P_CLIENT:
13286                 break;
13287         default:
13288                 return -EOPNOTSUPP;
13289         }
13290
13291         if (!info->attrs[NL80211_ATTR_MAC] ||
13292             !info->attrs[NL80211_ATTR_OPER_CLASS])
13293                 return -EINVAL;
13294
13295         err = nl80211_parse_chandef(rdev, info, &chandef);
13296         if (err)
13297                 return err;
13298
13299         /*
13300          * Don't allow wide channels on the 2.4Ghz band, as per IEEE802.11-2012
13301          * section 10.22.6.2.1. Disallow 5/10Mhz channels as well for now, the
13302          * specification is not defined for them.
13303          */
13304         if (chandef.chan->band == NL80211_BAND_2GHZ &&
13305             chandef.width != NL80211_CHAN_WIDTH_20_NOHT &&
13306             chandef.width != NL80211_CHAN_WIDTH_20)
13307                 return -EINVAL;
13308
13309         /* we will be active on the TDLS link */
13310         if (!cfg80211_reg_can_beacon_relax(&rdev->wiphy, &chandef,
13311                                            wdev->iftype))
13312                 return -EINVAL;
13313
13314         /* don't allow switching to DFS channels */
13315         if (cfg80211_chandef_dfs_required(wdev->wiphy, &chandef, wdev->iftype))
13316                 return -EINVAL;
13317
13318         addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
13319         oper_class = nla_get_u8(info->attrs[NL80211_ATTR_OPER_CLASS]);
13320
13321         wdev_lock(wdev);
13322         err = rdev_tdls_channel_switch(rdev, dev, addr, oper_class, &chandef);
13323         wdev_unlock(wdev);
13324
13325         return err;
13326 }
13327
13328 static int nl80211_tdls_cancel_channel_switch(struct sk_buff *skb,
13329                                               struct genl_info *info)
13330 {
13331         struct cfg80211_registered_device *rdev = info->user_ptr[0];
13332         struct net_device *dev = info->user_ptr[1];
13333         struct wireless_dev *wdev = dev->ieee80211_ptr;
13334         const u8 *addr;
13335
13336         if (!rdev->ops->tdls_channel_switch ||
13337             !rdev->ops->tdls_cancel_channel_switch ||
13338             !(rdev->wiphy.features & NL80211_FEATURE_TDLS_CHANNEL_SWITCH))
13339                 return -EOPNOTSUPP;
13340
13341         switch (dev->ieee80211_ptr->iftype) {
13342         case NL80211_IFTYPE_STATION:
13343         case NL80211_IFTYPE_P2P_CLIENT:
13344                 break;
13345         default:
13346                 return -EOPNOTSUPP;
13347         }
13348
13349         if (!info->attrs[NL80211_ATTR_MAC])
13350                 return -EINVAL;
13351
13352         addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
13353
13354         wdev_lock(wdev);
13355         rdev_tdls_cancel_channel_switch(rdev, dev, addr);
13356         wdev_unlock(wdev);
13357
13358         return 0;
13359 }
13360
13361 static int nl80211_set_multicast_to_unicast(struct sk_buff *skb,
13362                                             struct genl_info *info)
13363 {
13364         struct cfg80211_registered_device *rdev = info->user_ptr[0];
13365         struct net_device *dev = info->user_ptr[1];
13366         struct wireless_dev *wdev = dev->ieee80211_ptr;
13367         const struct nlattr *nla;
13368         bool enabled;
13369
13370         if (!rdev->ops->set_multicast_to_unicast)
13371                 return -EOPNOTSUPP;
13372
13373         if (wdev->iftype != NL80211_IFTYPE_AP &&
13374             wdev->iftype != NL80211_IFTYPE_P2P_GO)
13375                 return -EOPNOTSUPP;
13376
13377         nla = info->attrs[NL80211_ATTR_MULTICAST_TO_UNICAST_ENABLED];
13378         enabled = nla_get_flag(nla);
13379
13380         return rdev_set_multicast_to_unicast(rdev, dev, enabled);
13381 }
13382
13383 static int nl80211_set_pmk(struct sk_buff *skb, struct genl_info *info)
13384 {
13385         struct cfg80211_registered_device *rdev = info->user_ptr[0];
13386         struct net_device *dev = info->user_ptr[1];
13387         struct wireless_dev *wdev = dev->ieee80211_ptr;
13388         struct cfg80211_pmk_conf pmk_conf = {};
13389         int ret;
13390
13391         if (wdev->iftype != NL80211_IFTYPE_STATION &&
13392             wdev->iftype != NL80211_IFTYPE_P2P_CLIENT)
13393                 return -EOPNOTSUPP;
13394
13395         if (!wiphy_ext_feature_isset(&rdev->wiphy,
13396                                      NL80211_EXT_FEATURE_4WAY_HANDSHAKE_STA_1X))
13397                 return -EOPNOTSUPP;
13398
13399         if (!info->attrs[NL80211_ATTR_MAC] || !info->attrs[NL80211_ATTR_PMK])
13400                 return -EINVAL;
13401
13402         wdev_lock(wdev);
13403         if (!wdev->current_bss) {
13404                 ret = -ENOTCONN;
13405                 goto out;
13406         }
13407
13408         pmk_conf.aa = nla_data(info->attrs[NL80211_ATTR_MAC]);
13409         if (memcmp(pmk_conf.aa, wdev->current_bss->pub.bssid, ETH_ALEN)) {
13410                 ret = -EINVAL;
13411                 goto out;
13412         }
13413
13414         pmk_conf.pmk = nla_data(info->attrs[NL80211_ATTR_PMK]);
13415         pmk_conf.pmk_len = nla_len(info->attrs[NL80211_ATTR_PMK]);
13416         if (pmk_conf.pmk_len != WLAN_PMK_LEN &&
13417             pmk_conf.pmk_len != WLAN_PMK_LEN_SUITE_B_192) {
13418                 ret = -EINVAL;
13419                 goto out;
13420         }
13421
13422         if (info->attrs[NL80211_ATTR_PMKR0_NAME]) {
13423                 int r0_name_len = nla_len(info->attrs[NL80211_ATTR_PMKR0_NAME]);
13424
13425                 if (r0_name_len != WLAN_PMK_NAME_LEN) {
13426                         ret = -EINVAL;
13427                         goto out;
13428                 }
13429
13430                 pmk_conf.pmk_r0_name =
13431                         nla_data(info->attrs[NL80211_ATTR_PMKR0_NAME]);
13432         }
13433
13434         ret = rdev_set_pmk(rdev, dev, &pmk_conf);
13435 out:
13436         wdev_unlock(wdev);
13437         return ret;
13438 }
13439
13440 static int nl80211_del_pmk(struct sk_buff *skb, struct genl_info *info)
13441 {
13442         struct cfg80211_registered_device *rdev = info->user_ptr[0];
13443         struct net_device *dev = info->user_ptr[1];
13444         struct wireless_dev *wdev = dev->ieee80211_ptr;
13445         const u8 *aa;
13446         int ret;
13447
13448         if (wdev->iftype != NL80211_IFTYPE_STATION &&
13449             wdev->iftype != NL80211_IFTYPE_P2P_CLIENT)
13450                 return -EOPNOTSUPP;
13451
13452         if (!wiphy_ext_feature_isset(&rdev->wiphy,
13453                                      NL80211_EXT_FEATURE_4WAY_HANDSHAKE_STA_1X))
13454                 return -EOPNOTSUPP;
13455
13456         if (!info->attrs[NL80211_ATTR_MAC])
13457                 return -EINVAL;
13458
13459         wdev_lock(wdev);
13460         aa = nla_data(info->attrs[NL80211_ATTR_MAC]);
13461         ret = rdev_del_pmk(rdev, dev, aa);
13462         wdev_unlock(wdev);
13463
13464         return ret;
13465 }
13466
13467 static int nl80211_external_auth(struct sk_buff *skb, struct genl_info *info)
13468 {
13469         struct cfg80211_registered_device *rdev = info->user_ptr[0];
13470         struct net_device *dev = info->user_ptr[1];
13471         struct cfg80211_external_auth_params params;
13472
13473         if (!rdev->ops->external_auth)
13474                 return -EOPNOTSUPP;
13475
13476         if (!info->attrs[NL80211_ATTR_SSID] &&
13477             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
13478             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
13479                 return -EINVAL;
13480
13481         if (!info->attrs[NL80211_ATTR_BSSID])
13482                 return -EINVAL;
13483
13484         if (!info->attrs[NL80211_ATTR_STATUS_CODE])
13485                 return -EINVAL;
13486
13487         memset(&params, 0, sizeof(params));
13488
13489         if (info->attrs[NL80211_ATTR_SSID]) {
13490                 params.ssid.ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
13491                 if (params.ssid.ssid_len == 0 ||
13492                     params.ssid.ssid_len > IEEE80211_MAX_SSID_LEN)
13493                         return -EINVAL;
13494                 memcpy(params.ssid.ssid,
13495                        nla_data(info->attrs[NL80211_ATTR_SSID]),
13496                        params.ssid.ssid_len);
13497         }
13498
13499         memcpy(params.bssid, nla_data(info->attrs[NL80211_ATTR_BSSID]),
13500                ETH_ALEN);
13501
13502         params.status = nla_get_u16(info->attrs[NL80211_ATTR_STATUS_CODE]);
13503
13504         if (info->attrs[NL80211_ATTR_PMKID])
13505                 params.pmkid = nla_data(info->attrs[NL80211_ATTR_PMKID]);
13506
13507         return rdev_external_auth(rdev, dev, &params);
13508 }
13509
13510 static int nl80211_tx_control_port(struct sk_buff *skb, struct genl_info *info)
13511 {
13512         struct cfg80211_registered_device *rdev = info->user_ptr[0];
13513         struct net_device *dev = info->user_ptr[1];
13514         struct wireless_dev *wdev = dev->ieee80211_ptr;
13515         const u8 *buf;
13516         size_t len;
13517         u8 *dest;
13518         u16 proto;
13519         bool noencrypt;
13520         int err;
13521
13522         if (!wiphy_ext_feature_isset(&rdev->wiphy,
13523                                      NL80211_EXT_FEATURE_CONTROL_PORT_OVER_NL80211))
13524                 return -EOPNOTSUPP;
13525
13526         if (!rdev->ops->tx_control_port)
13527                 return -EOPNOTSUPP;
13528
13529         if (!info->attrs[NL80211_ATTR_FRAME] ||
13530             !info->attrs[NL80211_ATTR_MAC] ||
13531             !info->attrs[NL80211_ATTR_CONTROL_PORT_ETHERTYPE]) {
13532                 GENL_SET_ERR_MSG(info, "Frame, MAC or ethertype missing");
13533                 return -EINVAL;
13534         }
13535
13536         wdev_lock(wdev);
13537
13538         switch (wdev->iftype) {
13539         case NL80211_IFTYPE_AP:
13540         case NL80211_IFTYPE_P2P_GO:
13541         case NL80211_IFTYPE_MESH_POINT:
13542                 break;
13543         case NL80211_IFTYPE_ADHOC:
13544         case NL80211_IFTYPE_STATION:
13545         case NL80211_IFTYPE_P2P_CLIENT:
13546                 if (wdev->current_bss)
13547                         break;
13548                 err = -ENOTCONN;
13549                 goto out;
13550         default:
13551                 err = -EOPNOTSUPP;
13552                 goto out;
13553         }
13554
13555         wdev_unlock(wdev);
13556
13557         buf = nla_data(info->attrs[NL80211_ATTR_FRAME]);
13558         len = nla_len(info->attrs[NL80211_ATTR_FRAME]);
13559         dest = nla_data(info->attrs[NL80211_ATTR_MAC]);
13560         proto = nla_get_u16(info->attrs[NL80211_ATTR_CONTROL_PORT_ETHERTYPE]);
13561         noencrypt =
13562                 nla_get_flag(info->attrs[NL80211_ATTR_CONTROL_PORT_NO_ENCRYPT]);
13563
13564         return rdev_tx_control_port(rdev, dev, buf, len,
13565                                     dest, cpu_to_be16(proto), noencrypt);
13566
13567  out:
13568         wdev_unlock(wdev);
13569         return err;
13570 }
13571
13572 static int nl80211_get_ftm_responder_stats(struct sk_buff *skb,
13573                                            struct genl_info *info)
13574 {
13575         struct cfg80211_registered_device *rdev = info->user_ptr[0];
13576         struct net_device *dev = info->user_ptr[1];
13577         struct wireless_dev *wdev = dev->ieee80211_ptr;
13578         struct cfg80211_ftm_responder_stats ftm_stats = {};
13579         struct sk_buff *msg;
13580         void *hdr;
13581         struct nlattr *ftm_stats_attr;
13582         int err;
13583
13584         if (wdev->iftype != NL80211_IFTYPE_AP || !wdev->beacon_interval)
13585                 return -EOPNOTSUPP;
13586
13587         err = rdev_get_ftm_responder_stats(rdev, dev, &ftm_stats);
13588         if (err)
13589                 return err;
13590
13591         if (!ftm_stats.filled)
13592                 return -ENODATA;
13593
13594         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
13595         if (!msg)
13596                 return -ENOMEM;
13597
13598         hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
13599                              NL80211_CMD_GET_FTM_RESPONDER_STATS);
13600         if (!hdr)
13601                 return -ENOBUFS;
13602
13603         if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex))
13604                 goto nla_put_failure;
13605
13606         ftm_stats_attr = nla_nest_start_noflag(msg,
13607                                                NL80211_ATTR_FTM_RESPONDER_STATS);
13608         if (!ftm_stats_attr)
13609                 goto nla_put_failure;
13610
13611 #define SET_FTM(field, name, type)                                       \
13612         do { if ((ftm_stats.filled & BIT(NL80211_FTM_STATS_ ## name)) && \
13613             nla_put_ ## type(msg, NL80211_FTM_STATS_ ## name,            \
13614                              ftm_stats.field))                           \
13615                 goto nla_put_failure; } while (0)
13616 #define SET_FTM_U64(field, name)                                         \
13617         do { if ((ftm_stats.filled & BIT(NL80211_FTM_STATS_ ## name)) && \
13618             nla_put_u64_64bit(msg, NL80211_FTM_STATS_ ## name,           \
13619                               ftm_stats.field, NL80211_FTM_STATS_PAD))   \
13620                 goto nla_put_failure; } while (0)
13621
13622         SET_FTM(success_num, SUCCESS_NUM, u32);
13623         SET_FTM(partial_num, PARTIAL_NUM, u32);
13624         SET_FTM(failed_num, FAILED_NUM, u32);
13625         SET_FTM(asap_num, ASAP_NUM, u32);
13626         SET_FTM(non_asap_num, NON_ASAP_NUM, u32);
13627         SET_FTM_U64(total_duration_ms, TOTAL_DURATION_MSEC);
13628         SET_FTM(unknown_triggers_num, UNKNOWN_TRIGGERS_NUM, u32);
13629         SET_FTM(reschedule_requests_num, RESCHEDULE_REQUESTS_NUM, u32);
13630         SET_FTM(out_of_window_triggers_num, OUT_OF_WINDOW_TRIGGERS_NUM, u32);
13631 #undef SET_FTM
13632
13633         nla_nest_end(msg, ftm_stats_attr);
13634
13635         genlmsg_end(msg, hdr);
13636         return genlmsg_reply(msg, info);
13637
13638 nla_put_failure:
13639         nlmsg_free(msg);
13640         return -ENOBUFS;
13641 }
13642
13643 static int nl80211_update_owe_info(struct sk_buff *skb, struct genl_info *info)
13644 {
13645         struct cfg80211_registered_device *rdev = info->user_ptr[0];
13646         struct cfg80211_update_owe_info owe_info;
13647         struct net_device *dev = info->user_ptr[1];
13648
13649         if (!rdev->ops->update_owe_info)
13650                 return -EOPNOTSUPP;
13651
13652         if (!info->attrs[NL80211_ATTR_STATUS_CODE] ||
13653             !info->attrs[NL80211_ATTR_MAC])
13654                 return -EINVAL;
13655
13656         memset(&owe_info, 0, sizeof(owe_info));
13657         owe_info.status = nla_get_u16(info->attrs[NL80211_ATTR_STATUS_CODE]);
13658         nla_memcpy(owe_info.peer, info->attrs[NL80211_ATTR_MAC], ETH_ALEN);
13659
13660         if (info->attrs[NL80211_ATTR_IE]) {
13661                 owe_info.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
13662                 owe_info.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
13663         }
13664
13665         return rdev_update_owe_info(rdev, dev, &owe_info);
13666 }
13667
13668 static int nl80211_probe_mesh_link(struct sk_buff *skb, struct genl_info *info)
13669 {
13670         struct cfg80211_registered_device *rdev = info->user_ptr[0];
13671         struct net_device *dev = info->user_ptr[1];
13672         struct wireless_dev *wdev = dev->ieee80211_ptr;
13673         struct station_info sinfo = {};
13674         const u8 *buf;
13675         size_t len;
13676         u8 *dest;
13677         int err;
13678
13679         if (!rdev->ops->probe_mesh_link || !rdev->ops->get_station)
13680                 return -EOPNOTSUPP;
13681
13682         if (!info->attrs[NL80211_ATTR_MAC] ||
13683             !info->attrs[NL80211_ATTR_FRAME]) {
13684                 GENL_SET_ERR_MSG(info, "Frame or MAC missing");
13685                 return -EINVAL;
13686         }
13687
13688         if (wdev->iftype != NL80211_IFTYPE_MESH_POINT)
13689                 return -EOPNOTSUPP;
13690
13691         dest = nla_data(info->attrs[NL80211_ATTR_MAC]);
13692         buf = nla_data(info->attrs[NL80211_ATTR_FRAME]);
13693         len = nla_len(info->attrs[NL80211_ATTR_FRAME]);
13694
13695         if (len < sizeof(struct ethhdr))
13696                 return -EINVAL;
13697
13698         if (!ether_addr_equal(buf, dest) || is_multicast_ether_addr(buf) ||
13699             !ether_addr_equal(buf + ETH_ALEN, dev->dev_addr))
13700                 return -EINVAL;
13701
13702         err = rdev_get_station(rdev, dev, dest, &sinfo);
13703         if (err)
13704                 return err;
13705
13706         return rdev_probe_mesh_link(rdev, dev, dest, buf, len);
13707 }
13708
13709 #define NL80211_FLAG_NEED_WIPHY         0x01
13710 #define NL80211_FLAG_NEED_NETDEV        0x02
13711 #define NL80211_FLAG_NEED_RTNL          0x04
13712 #define NL80211_FLAG_CHECK_NETDEV_UP    0x08
13713 #define NL80211_FLAG_NEED_NETDEV_UP     (NL80211_FLAG_NEED_NETDEV |\
13714                                          NL80211_FLAG_CHECK_NETDEV_UP)
13715 #define NL80211_FLAG_NEED_WDEV          0x10
13716 /* If a netdev is associated, it must be UP, P2P must be started */
13717 #define NL80211_FLAG_NEED_WDEV_UP       (NL80211_FLAG_NEED_WDEV |\
13718                                          NL80211_FLAG_CHECK_NETDEV_UP)
13719 #define NL80211_FLAG_CLEAR_SKB          0x20
13720
13721 static int nl80211_pre_doit(const struct genl_ops *ops, struct sk_buff *skb,
13722                             struct genl_info *info)
13723 {
13724         struct cfg80211_registered_device *rdev;
13725         struct wireless_dev *wdev;
13726         struct net_device *dev;
13727         bool rtnl = ops->internal_flags & NL80211_FLAG_NEED_RTNL;
13728
13729         if (rtnl)
13730                 rtnl_lock();
13731
13732         if (ops->internal_flags & NL80211_FLAG_NEED_WIPHY) {
13733                 rdev = cfg80211_get_dev_from_info(genl_info_net(info), info);
13734                 if (IS_ERR(rdev)) {
13735                         if (rtnl)
13736                                 rtnl_unlock();
13737                         return PTR_ERR(rdev);
13738                 }
13739                 info->user_ptr[0] = rdev;
13740         } else if (ops->internal_flags & NL80211_FLAG_NEED_NETDEV ||
13741                    ops->internal_flags & NL80211_FLAG_NEED_WDEV) {
13742                 ASSERT_RTNL();
13743
13744                 wdev = __cfg80211_wdev_from_attrs(genl_info_net(info),
13745                                                   info->attrs);
13746                 if (IS_ERR(wdev)) {
13747                         if (rtnl)
13748                                 rtnl_unlock();
13749                         return PTR_ERR(wdev);
13750                 }
13751
13752                 dev = wdev->netdev;
13753                 rdev = wiphy_to_rdev(wdev->wiphy);
13754
13755                 if (ops->internal_flags & NL80211_FLAG_NEED_NETDEV) {
13756                         if (!dev) {
13757                                 if (rtnl)
13758                                         rtnl_unlock();
13759                                 return -EINVAL;
13760                         }
13761
13762                         info->user_ptr[1] = dev;
13763                 } else {
13764                         info->user_ptr[1] = wdev;
13765                 }
13766
13767                 if (ops->internal_flags & NL80211_FLAG_CHECK_NETDEV_UP &&
13768                     !wdev_running(wdev)) {
13769                         if (rtnl)
13770                                 rtnl_unlock();
13771                         return -ENETDOWN;
13772                 }
13773
13774                 if (dev)
13775                         dev_hold(dev);
13776
13777                 info->user_ptr[0] = rdev;
13778         }
13779
13780         return 0;
13781 }
13782
13783 static void nl80211_post_doit(const struct genl_ops *ops, struct sk_buff *skb,
13784                               struct genl_info *info)
13785 {
13786         if (info->user_ptr[1]) {
13787                 if (ops->internal_flags & NL80211_FLAG_NEED_WDEV) {
13788                         struct wireless_dev *wdev = info->user_ptr[1];
13789
13790                         if (wdev->netdev)
13791                                 dev_put(wdev->netdev);
13792                 } else {
13793                         dev_put(info->user_ptr[1]);
13794                 }
13795         }
13796
13797         if (ops->internal_flags & NL80211_FLAG_NEED_RTNL)
13798                 rtnl_unlock();
13799
13800         /* If needed, clear the netlink message payload from the SKB
13801          * as it might contain key data that shouldn't stick around on
13802          * the heap after the SKB is freed. The netlink message header
13803          * is still needed for further processing, so leave it intact.
13804          */
13805         if (ops->internal_flags & NL80211_FLAG_CLEAR_SKB) {
13806                 struct nlmsghdr *nlh = nlmsg_hdr(skb);
13807
13808                 memset(nlmsg_data(nlh), 0, nlmsg_len(nlh));
13809         }
13810 }
13811
13812 static const struct genl_ops nl80211_ops[] = {
13813         {
13814                 .cmd = NL80211_CMD_GET_WIPHY,
13815                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
13816                 .doit = nl80211_get_wiphy,
13817                 .dumpit = nl80211_dump_wiphy,
13818                 .done = nl80211_dump_wiphy_done,
13819                 /* can be retrieved by unprivileged users */
13820                 .internal_flags = NL80211_FLAG_NEED_WIPHY |
13821                                   NL80211_FLAG_NEED_RTNL,
13822         },
13823         {
13824                 .cmd = NL80211_CMD_SET_WIPHY,
13825                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
13826                 .doit = nl80211_set_wiphy,
13827                 .flags = GENL_UNS_ADMIN_PERM,
13828                 .internal_flags = NL80211_FLAG_NEED_RTNL,
13829         },
13830         {
13831                 .cmd = NL80211_CMD_GET_INTERFACE,
13832                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
13833                 .doit = nl80211_get_interface,
13834                 .dumpit = nl80211_dump_interface,
13835                 /* can be retrieved by unprivileged users */
13836                 .internal_flags = NL80211_FLAG_NEED_WDEV |
13837                                   NL80211_FLAG_NEED_RTNL,
13838         },
13839         {
13840                 .cmd = NL80211_CMD_SET_INTERFACE,
13841                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
13842                 .doit = nl80211_set_interface,
13843                 .flags = GENL_UNS_ADMIN_PERM,
13844                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
13845                                   NL80211_FLAG_NEED_RTNL,
13846         },
13847         {
13848                 .cmd = NL80211_CMD_NEW_INTERFACE,
13849                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
13850                 .doit = nl80211_new_interface,
13851                 .flags = GENL_UNS_ADMIN_PERM,
13852                 .internal_flags = NL80211_FLAG_NEED_WIPHY |
13853                                   NL80211_FLAG_NEED_RTNL,
13854         },
13855         {
13856                 .cmd = NL80211_CMD_DEL_INTERFACE,
13857                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
13858                 .doit = nl80211_del_interface,
13859                 .flags = GENL_UNS_ADMIN_PERM,
13860                 .internal_flags = NL80211_FLAG_NEED_WDEV |
13861                                   NL80211_FLAG_NEED_RTNL,
13862         },
13863         {
13864                 .cmd = NL80211_CMD_GET_KEY,
13865                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
13866                 .doit = nl80211_get_key,
13867                 .flags = GENL_UNS_ADMIN_PERM,
13868                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
13869                                   NL80211_FLAG_NEED_RTNL,
13870         },
13871         {
13872                 .cmd = NL80211_CMD_SET_KEY,
13873                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
13874                 .doit = nl80211_set_key,
13875                 .flags = GENL_UNS_ADMIN_PERM,
13876                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
13877                                   NL80211_FLAG_NEED_RTNL |
13878                                   NL80211_FLAG_CLEAR_SKB,
13879         },
13880         {
13881                 .cmd = NL80211_CMD_NEW_KEY,
13882                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
13883                 .doit = nl80211_new_key,
13884                 .flags = GENL_UNS_ADMIN_PERM,
13885                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
13886                                   NL80211_FLAG_NEED_RTNL |
13887                                   NL80211_FLAG_CLEAR_SKB,
13888         },
13889         {
13890                 .cmd = NL80211_CMD_DEL_KEY,
13891                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
13892                 .doit = nl80211_del_key,
13893                 .flags = GENL_UNS_ADMIN_PERM,
13894                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
13895                                   NL80211_FLAG_NEED_RTNL,
13896         },
13897         {
13898                 .cmd = NL80211_CMD_SET_BEACON,
13899                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
13900                 .flags = GENL_UNS_ADMIN_PERM,
13901                 .doit = nl80211_set_beacon,
13902                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
13903                                   NL80211_FLAG_NEED_RTNL,
13904         },
13905         {
13906                 .cmd = NL80211_CMD_START_AP,
13907                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
13908                 .flags = GENL_UNS_ADMIN_PERM,
13909                 .doit = nl80211_start_ap,
13910                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
13911                                   NL80211_FLAG_NEED_RTNL,
13912         },
13913         {
13914                 .cmd = NL80211_CMD_STOP_AP,
13915                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
13916                 .flags = GENL_UNS_ADMIN_PERM,
13917                 .doit = nl80211_stop_ap,
13918                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
13919                                   NL80211_FLAG_NEED_RTNL,
13920         },
13921         {
13922                 .cmd = NL80211_CMD_GET_STATION,
13923                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
13924                 .doit = nl80211_get_station,
13925                 .dumpit = nl80211_dump_station,
13926                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
13927                                   NL80211_FLAG_NEED_RTNL,
13928         },
13929         {
13930                 .cmd = NL80211_CMD_SET_STATION,
13931                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
13932                 .doit = nl80211_set_station,
13933                 .flags = GENL_UNS_ADMIN_PERM,
13934                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
13935                                   NL80211_FLAG_NEED_RTNL,
13936         },
13937         {
13938                 .cmd = NL80211_CMD_NEW_STATION,
13939                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
13940                 .doit = nl80211_new_station,
13941                 .flags = GENL_UNS_ADMIN_PERM,
13942                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
13943                                   NL80211_FLAG_NEED_RTNL,
13944         },
13945         {
13946                 .cmd = NL80211_CMD_DEL_STATION,
13947                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
13948                 .doit = nl80211_del_station,
13949                 .flags = GENL_UNS_ADMIN_PERM,
13950                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
13951                                   NL80211_FLAG_NEED_RTNL,
13952         },
13953         {
13954                 .cmd = NL80211_CMD_GET_MPATH,
13955                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
13956                 .doit = nl80211_get_mpath,
13957                 .dumpit = nl80211_dump_mpath,
13958                 .flags = GENL_UNS_ADMIN_PERM,
13959                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
13960                                   NL80211_FLAG_NEED_RTNL,
13961         },
13962         {
13963                 .cmd = NL80211_CMD_GET_MPP,
13964                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
13965                 .doit = nl80211_get_mpp,
13966                 .dumpit = nl80211_dump_mpp,
13967                 .flags = GENL_UNS_ADMIN_PERM,
13968                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
13969                                   NL80211_FLAG_NEED_RTNL,
13970         },
13971         {
13972                 .cmd = NL80211_CMD_SET_MPATH,
13973                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
13974                 .doit = nl80211_set_mpath,
13975                 .flags = GENL_UNS_ADMIN_PERM,
13976                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
13977                                   NL80211_FLAG_NEED_RTNL,
13978         },
13979         {
13980                 .cmd = NL80211_CMD_NEW_MPATH,
13981                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
13982                 .doit = nl80211_new_mpath,
13983                 .flags = GENL_UNS_ADMIN_PERM,
13984                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
13985                                   NL80211_FLAG_NEED_RTNL,
13986         },
13987         {
13988                 .cmd = NL80211_CMD_DEL_MPATH,
13989                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
13990                 .doit = nl80211_del_mpath,
13991                 .flags = GENL_UNS_ADMIN_PERM,
13992                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
13993                                   NL80211_FLAG_NEED_RTNL,
13994         },
13995         {
13996                 .cmd = NL80211_CMD_SET_BSS,
13997                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
13998                 .doit = nl80211_set_bss,
13999                 .flags = GENL_UNS_ADMIN_PERM,
14000                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14001                                   NL80211_FLAG_NEED_RTNL,
14002         },
14003         {
14004                 .cmd = NL80211_CMD_GET_REG,
14005                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14006                 .doit = nl80211_get_reg_do,
14007                 .dumpit = nl80211_get_reg_dump,
14008                 .internal_flags = NL80211_FLAG_NEED_RTNL,
14009                 /* can be retrieved by unprivileged users */
14010         },
14011 #ifdef CONFIG_CFG80211_CRDA_SUPPORT
14012         {
14013                 .cmd = NL80211_CMD_SET_REG,
14014                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14015                 .doit = nl80211_set_reg,
14016                 .flags = GENL_ADMIN_PERM,
14017                 .internal_flags = NL80211_FLAG_NEED_RTNL,
14018         },
14019 #endif
14020         {
14021                 .cmd = NL80211_CMD_REQ_SET_REG,
14022                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14023                 .doit = nl80211_req_set_reg,
14024                 .flags = GENL_ADMIN_PERM,
14025         },
14026         {
14027                 .cmd = NL80211_CMD_RELOAD_REGDB,
14028                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14029                 .doit = nl80211_reload_regdb,
14030                 .flags = GENL_ADMIN_PERM,
14031         },
14032         {
14033                 .cmd = NL80211_CMD_GET_MESH_CONFIG,
14034                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14035                 .doit = nl80211_get_mesh_config,
14036                 /* can be retrieved by unprivileged users */
14037                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14038                                   NL80211_FLAG_NEED_RTNL,
14039         },
14040         {
14041                 .cmd = NL80211_CMD_SET_MESH_CONFIG,
14042                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14043                 .doit = nl80211_update_mesh_config,
14044                 .flags = GENL_UNS_ADMIN_PERM,
14045                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14046                                   NL80211_FLAG_NEED_RTNL,
14047         },
14048         {
14049                 .cmd = NL80211_CMD_TRIGGER_SCAN,
14050                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14051                 .doit = nl80211_trigger_scan,
14052                 .flags = GENL_UNS_ADMIN_PERM,
14053                 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
14054                                   NL80211_FLAG_NEED_RTNL,
14055         },
14056         {
14057                 .cmd = NL80211_CMD_ABORT_SCAN,
14058                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14059                 .doit = nl80211_abort_scan,
14060                 .flags = GENL_UNS_ADMIN_PERM,
14061                 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
14062                                   NL80211_FLAG_NEED_RTNL,
14063         },
14064         {
14065                 .cmd = NL80211_CMD_GET_SCAN,
14066                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14067                 .dumpit = nl80211_dump_scan,
14068         },
14069         {
14070                 .cmd = NL80211_CMD_START_SCHED_SCAN,
14071                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14072                 .doit = nl80211_start_sched_scan,
14073                 .flags = GENL_UNS_ADMIN_PERM,
14074                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14075                                   NL80211_FLAG_NEED_RTNL,
14076         },
14077         {
14078                 .cmd = NL80211_CMD_STOP_SCHED_SCAN,
14079                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14080                 .doit = nl80211_stop_sched_scan,
14081                 .flags = GENL_UNS_ADMIN_PERM,
14082                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14083                                   NL80211_FLAG_NEED_RTNL,
14084         },
14085         {
14086                 .cmd = NL80211_CMD_AUTHENTICATE,
14087                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14088                 .doit = nl80211_authenticate,
14089                 .flags = GENL_UNS_ADMIN_PERM,
14090                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14091                                   NL80211_FLAG_NEED_RTNL |
14092                                   NL80211_FLAG_CLEAR_SKB,
14093         },
14094         {
14095                 .cmd = NL80211_CMD_ASSOCIATE,
14096                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14097                 .doit = nl80211_associate,
14098                 .flags = GENL_UNS_ADMIN_PERM,
14099                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14100                                   NL80211_FLAG_NEED_RTNL |
14101                                   NL80211_FLAG_CLEAR_SKB,
14102         },
14103         {
14104                 .cmd = NL80211_CMD_DEAUTHENTICATE,
14105                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14106                 .doit = nl80211_deauthenticate,
14107                 .flags = GENL_UNS_ADMIN_PERM,
14108                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14109                                   NL80211_FLAG_NEED_RTNL,
14110         },
14111         {
14112                 .cmd = NL80211_CMD_DISASSOCIATE,
14113                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14114                 .doit = nl80211_disassociate,
14115                 .flags = GENL_UNS_ADMIN_PERM,
14116                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14117                                   NL80211_FLAG_NEED_RTNL,
14118         },
14119         {
14120                 .cmd = NL80211_CMD_JOIN_IBSS,
14121                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14122                 .doit = nl80211_join_ibss,
14123                 .flags = GENL_UNS_ADMIN_PERM,
14124                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14125                                   NL80211_FLAG_NEED_RTNL,
14126         },
14127         {
14128                 .cmd = NL80211_CMD_LEAVE_IBSS,
14129                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14130                 .doit = nl80211_leave_ibss,
14131                 .flags = GENL_UNS_ADMIN_PERM,
14132                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14133                                   NL80211_FLAG_NEED_RTNL,
14134         },
14135 #ifdef CONFIG_NL80211_TESTMODE
14136         {
14137                 .cmd = NL80211_CMD_TESTMODE,
14138                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14139                 .doit = nl80211_testmode_do,
14140                 .dumpit = nl80211_testmode_dump,
14141                 .flags = GENL_UNS_ADMIN_PERM,
14142                 .internal_flags = NL80211_FLAG_NEED_WIPHY |
14143                                   NL80211_FLAG_NEED_RTNL,
14144         },
14145 #endif
14146         {
14147                 .cmd = NL80211_CMD_CONNECT,
14148                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14149                 .doit = nl80211_connect,
14150                 .flags = GENL_UNS_ADMIN_PERM,
14151                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14152                                   NL80211_FLAG_NEED_RTNL |
14153                                   NL80211_FLAG_CLEAR_SKB,
14154         },
14155         {
14156                 .cmd = NL80211_CMD_UPDATE_CONNECT_PARAMS,
14157                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14158                 .doit = nl80211_update_connect_params,
14159                 .flags = GENL_ADMIN_PERM,
14160                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14161                                   NL80211_FLAG_NEED_RTNL |
14162                                   NL80211_FLAG_CLEAR_SKB,
14163         },
14164         {
14165                 .cmd = NL80211_CMD_DISCONNECT,
14166                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14167                 .doit = nl80211_disconnect,
14168                 .flags = GENL_UNS_ADMIN_PERM,
14169                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14170                                   NL80211_FLAG_NEED_RTNL,
14171         },
14172         {
14173                 .cmd = NL80211_CMD_SET_WIPHY_NETNS,
14174                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14175                 .doit = nl80211_wiphy_netns,
14176                 .flags = GENL_UNS_ADMIN_PERM,
14177                 .internal_flags = NL80211_FLAG_NEED_WIPHY |
14178                                   NL80211_FLAG_NEED_RTNL,
14179         },
14180         {
14181                 .cmd = NL80211_CMD_GET_SURVEY,
14182                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14183                 .dumpit = nl80211_dump_survey,
14184         },
14185         {
14186                 .cmd = NL80211_CMD_SET_PMKSA,
14187                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14188                 .doit = nl80211_setdel_pmksa,
14189                 .flags = GENL_UNS_ADMIN_PERM,
14190                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14191                                   NL80211_FLAG_NEED_RTNL |
14192                                   NL80211_FLAG_CLEAR_SKB,
14193         },
14194         {
14195                 .cmd = NL80211_CMD_DEL_PMKSA,
14196                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14197                 .doit = nl80211_setdel_pmksa,
14198                 .flags = GENL_UNS_ADMIN_PERM,
14199                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14200                                   NL80211_FLAG_NEED_RTNL,
14201         },
14202         {
14203                 .cmd = NL80211_CMD_FLUSH_PMKSA,
14204                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14205                 .doit = nl80211_flush_pmksa,
14206                 .flags = GENL_UNS_ADMIN_PERM,
14207                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14208                                   NL80211_FLAG_NEED_RTNL,
14209         },
14210         {
14211                 .cmd = NL80211_CMD_REMAIN_ON_CHANNEL,
14212                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14213                 .doit = nl80211_remain_on_channel,
14214                 .flags = GENL_UNS_ADMIN_PERM,
14215                 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
14216                                   NL80211_FLAG_NEED_RTNL,
14217         },
14218         {
14219                 .cmd = NL80211_CMD_CANCEL_REMAIN_ON_CHANNEL,
14220                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14221                 .doit = nl80211_cancel_remain_on_channel,
14222                 .flags = GENL_UNS_ADMIN_PERM,
14223                 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
14224                                   NL80211_FLAG_NEED_RTNL,
14225         },
14226         {
14227                 .cmd = NL80211_CMD_SET_TX_BITRATE_MASK,
14228                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14229                 .doit = nl80211_set_tx_bitrate_mask,
14230                 .flags = GENL_UNS_ADMIN_PERM,
14231                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
14232                                   NL80211_FLAG_NEED_RTNL,
14233         },
14234         {
14235                 .cmd = NL80211_CMD_REGISTER_FRAME,
14236                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14237                 .doit = nl80211_register_mgmt,
14238                 .flags = GENL_UNS_ADMIN_PERM,
14239                 .internal_flags = NL80211_FLAG_NEED_WDEV |
14240                                   NL80211_FLAG_NEED_RTNL,
14241         },
14242         {
14243                 .cmd = NL80211_CMD_FRAME,
14244                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14245                 .doit = nl80211_tx_mgmt,
14246                 .flags = GENL_UNS_ADMIN_PERM,
14247                 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
14248                                   NL80211_FLAG_NEED_RTNL,
14249         },
14250         {
14251                 .cmd = NL80211_CMD_FRAME_WAIT_CANCEL,
14252                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14253                 .doit = nl80211_tx_mgmt_cancel_wait,
14254                 .flags = GENL_UNS_ADMIN_PERM,
14255                 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
14256                                   NL80211_FLAG_NEED_RTNL,
14257         },
14258         {
14259                 .cmd = NL80211_CMD_SET_POWER_SAVE,
14260                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14261                 .doit = nl80211_set_power_save,
14262                 .flags = GENL_UNS_ADMIN_PERM,
14263                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
14264                                   NL80211_FLAG_NEED_RTNL,
14265         },
14266         {
14267                 .cmd = NL80211_CMD_GET_POWER_SAVE,
14268                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14269                 .doit = nl80211_get_power_save,
14270                 /* can be retrieved by unprivileged users */
14271                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
14272                                   NL80211_FLAG_NEED_RTNL,
14273         },
14274         {
14275                 .cmd = NL80211_CMD_SET_CQM,
14276                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14277                 .doit = nl80211_set_cqm,
14278                 .flags = GENL_UNS_ADMIN_PERM,
14279                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
14280                                   NL80211_FLAG_NEED_RTNL,
14281         },
14282         {
14283                 .cmd = NL80211_CMD_SET_CHANNEL,
14284                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14285                 .doit = nl80211_set_channel,
14286                 .flags = GENL_UNS_ADMIN_PERM,
14287                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
14288                                   NL80211_FLAG_NEED_RTNL,
14289         },
14290         {
14291                 .cmd = NL80211_CMD_SET_WDS_PEER,
14292                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14293                 .doit = nl80211_set_wds_peer,
14294                 .flags = GENL_UNS_ADMIN_PERM,
14295                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
14296                                   NL80211_FLAG_NEED_RTNL,
14297         },
14298         {
14299                 .cmd = NL80211_CMD_JOIN_MESH,
14300                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14301                 .doit = nl80211_join_mesh,
14302                 .flags = GENL_UNS_ADMIN_PERM,
14303                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14304                                   NL80211_FLAG_NEED_RTNL,
14305         },
14306         {
14307                 .cmd = NL80211_CMD_LEAVE_MESH,
14308                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14309                 .doit = nl80211_leave_mesh,
14310                 .flags = GENL_UNS_ADMIN_PERM,
14311                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14312                                   NL80211_FLAG_NEED_RTNL,
14313         },
14314         {
14315                 .cmd = NL80211_CMD_JOIN_OCB,
14316                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14317                 .doit = nl80211_join_ocb,
14318                 .flags = GENL_UNS_ADMIN_PERM,
14319                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14320                                   NL80211_FLAG_NEED_RTNL,
14321         },
14322         {
14323                 .cmd = NL80211_CMD_LEAVE_OCB,
14324                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14325                 .doit = nl80211_leave_ocb,
14326                 .flags = GENL_UNS_ADMIN_PERM,
14327                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14328                                   NL80211_FLAG_NEED_RTNL,
14329         },
14330 #ifdef CONFIG_PM
14331         {
14332                 .cmd = NL80211_CMD_GET_WOWLAN,
14333                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14334                 .doit = nl80211_get_wowlan,
14335                 /* can be retrieved by unprivileged users */
14336                 .internal_flags = NL80211_FLAG_NEED_WIPHY |
14337                                   NL80211_FLAG_NEED_RTNL,
14338         },
14339         {
14340                 .cmd = NL80211_CMD_SET_WOWLAN,
14341                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14342                 .doit = nl80211_set_wowlan,
14343                 .flags = GENL_UNS_ADMIN_PERM,
14344                 .internal_flags = NL80211_FLAG_NEED_WIPHY |
14345                                   NL80211_FLAG_NEED_RTNL,
14346         },
14347 #endif
14348         {
14349                 .cmd = NL80211_CMD_SET_REKEY_OFFLOAD,
14350                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14351                 .doit = nl80211_set_rekey_data,
14352                 .flags = GENL_UNS_ADMIN_PERM,
14353                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14354                                   NL80211_FLAG_NEED_RTNL |
14355                                   NL80211_FLAG_CLEAR_SKB,
14356         },
14357         {
14358                 .cmd = NL80211_CMD_TDLS_MGMT,
14359                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14360                 .doit = nl80211_tdls_mgmt,
14361                 .flags = GENL_UNS_ADMIN_PERM,
14362                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14363                                   NL80211_FLAG_NEED_RTNL,
14364         },
14365         {
14366                 .cmd = NL80211_CMD_TDLS_OPER,
14367                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14368                 .doit = nl80211_tdls_oper,
14369                 .flags = GENL_UNS_ADMIN_PERM,
14370                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14371                                   NL80211_FLAG_NEED_RTNL,
14372         },
14373         {
14374                 .cmd = NL80211_CMD_UNEXPECTED_FRAME,
14375                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14376                 .doit = nl80211_register_unexpected_frame,
14377                 .flags = GENL_UNS_ADMIN_PERM,
14378                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
14379                                   NL80211_FLAG_NEED_RTNL,
14380         },
14381         {
14382                 .cmd = NL80211_CMD_PROBE_CLIENT,
14383                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14384                 .doit = nl80211_probe_client,
14385                 .flags = GENL_UNS_ADMIN_PERM,
14386                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14387                                   NL80211_FLAG_NEED_RTNL,
14388         },
14389         {
14390                 .cmd = NL80211_CMD_REGISTER_BEACONS,
14391                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14392                 .doit = nl80211_register_beacons,
14393                 .flags = GENL_UNS_ADMIN_PERM,
14394                 .internal_flags = NL80211_FLAG_NEED_WIPHY |
14395                                   NL80211_FLAG_NEED_RTNL,
14396         },
14397         {
14398                 .cmd = NL80211_CMD_SET_NOACK_MAP,
14399                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14400                 .doit = nl80211_set_noack_map,
14401                 .flags = GENL_UNS_ADMIN_PERM,
14402                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
14403                                   NL80211_FLAG_NEED_RTNL,
14404         },
14405         {
14406                 .cmd = NL80211_CMD_START_P2P_DEVICE,
14407                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14408                 .doit = nl80211_start_p2p_device,
14409                 .flags = GENL_UNS_ADMIN_PERM,
14410                 .internal_flags = NL80211_FLAG_NEED_WDEV |
14411                                   NL80211_FLAG_NEED_RTNL,
14412         },
14413         {
14414                 .cmd = NL80211_CMD_STOP_P2P_DEVICE,
14415                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14416                 .doit = nl80211_stop_p2p_device,
14417                 .flags = GENL_UNS_ADMIN_PERM,
14418                 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
14419                                   NL80211_FLAG_NEED_RTNL,
14420         },
14421         {
14422                 .cmd = NL80211_CMD_START_NAN,
14423                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14424                 .doit = nl80211_start_nan,
14425                 .flags = GENL_ADMIN_PERM,
14426                 .internal_flags = NL80211_FLAG_NEED_WDEV |
14427                                   NL80211_FLAG_NEED_RTNL,
14428         },
14429         {
14430                 .cmd = NL80211_CMD_STOP_NAN,
14431                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14432                 .doit = nl80211_stop_nan,
14433                 .flags = GENL_ADMIN_PERM,
14434                 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
14435                                   NL80211_FLAG_NEED_RTNL,
14436         },
14437         {
14438                 .cmd = NL80211_CMD_ADD_NAN_FUNCTION,
14439                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14440                 .doit = nl80211_nan_add_func,
14441                 .flags = GENL_ADMIN_PERM,
14442                 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
14443                                   NL80211_FLAG_NEED_RTNL,
14444         },
14445         {
14446                 .cmd = NL80211_CMD_DEL_NAN_FUNCTION,
14447                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14448                 .doit = nl80211_nan_del_func,
14449                 .flags = GENL_ADMIN_PERM,
14450                 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
14451                                   NL80211_FLAG_NEED_RTNL,
14452         },
14453         {
14454                 .cmd = NL80211_CMD_CHANGE_NAN_CONFIG,
14455                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14456                 .doit = nl80211_nan_change_config,
14457                 .flags = GENL_ADMIN_PERM,
14458                 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
14459                                   NL80211_FLAG_NEED_RTNL,
14460         },
14461         {
14462                 .cmd = NL80211_CMD_SET_MCAST_RATE,
14463                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14464                 .doit = nl80211_set_mcast_rate,
14465                 .flags = GENL_UNS_ADMIN_PERM,
14466                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
14467                                   NL80211_FLAG_NEED_RTNL,
14468         },
14469         {
14470                 .cmd = NL80211_CMD_SET_MAC_ACL,
14471                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14472                 .doit = nl80211_set_mac_acl,
14473                 .flags = GENL_UNS_ADMIN_PERM,
14474                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
14475                                   NL80211_FLAG_NEED_RTNL,
14476         },
14477         {
14478                 .cmd = NL80211_CMD_RADAR_DETECT,
14479                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14480                 .doit = nl80211_start_radar_detection,
14481                 .flags = GENL_UNS_ADMIN_PERM,
14482                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14483                                   NL80211_FLAG_NEED_RTNL,
14484         },
14485         {
14486                 .cmd = NL80211_CMD_GET_PROTOCOL_FEATURES,
14487                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14488                 .doit = nl80211_get_protocol_features,
14489         },
14490         {
14491                 .cmd = NL80211_CMD_UPDATE_FT_IES,
14492                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14493                 .doit = nl80211_update_ft_ies,
14494                 .flags = GENL_UNS_ADMIN_PERM,
14495                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14496                                   NL80211_FLAG_NEED_RTNL,
14497         },
14498         {
14499                 .cmd = NL80211_CMD_CRIT_PROTOCOL_START,
14500                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14501                 .doit = nl80211_crit_protocol_start,
14502                 .flags = GENL_UNS_ADMIN_PERM,
14503                 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
14504                                   NL80211_FLAG_NEED_RTNL,
14505         },
14506         {
14507                 .cmd = NL80211_CMD_CRIT_PROTOCOL_STOP,
14508                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14509                 .doit = nl80211_crit_protocol_stop,
14510                 .flags = GENL_UNS_ADMIN_PERM,
14511                 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
14512                                   NL80211_FLAG_NEED_RTNL,
14513         },
14514         {
14515                 .cmd = NL80211_CMD_GET_COALESCE,
14516                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14517                 .doit = nl80211_get_coalesce,
14518                 .internal_flags = NL80211_FLAG_NEED_WIPHY |
14519                                   NL80211_FLAG_NEED_RTNL,
14520         },
14521         {
14522                 .cmd = NL80211_CMD_SET_COALESCE,
14523                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14524                 .doit = nl80211_set_coalesce,
14525                 .flags = GENL_UNS_ADMIN_PERM,
14526                 .internal_flags = NL80211_FLAG_NEED_WIPHY |
14527                                   NL80211_FLAG_NEED_RTNL,
14528         },
14529         {
14530                 .cmd = NL80211_CMD_CHANNEL_SWITCH,
14531                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14532                 .doit = nl80211_channel_switch,
14533                 .flags = GENL_UNS_ADMIN_PERM,
14534                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14535                                   NL80211_FLAG_NEED_RTNL,
14536         },
14537         {
14538                 .cmd = NL80211_CMD_VENDOR,
14539                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14540                 .doit = nl80211_vendor_cmd,
14541                 .dumpit = nl80211_vendor_cmd_dump,
14542                 .flags = GENL_UNS_ADMIN_PERM,
14543                 .internal_flags = NL80211_FLAG_NEED_WIPHY |
14544                                   NL80211_FLAG_NEED_RTNL |
14545                                   NL80211_FLAG_CLEAR_SKB,
14546         },
14547         {
14548                 .cmd = NL80211_CMD_SET_QOS_MAP,
14549                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14550                 .doit = nl80211_set_qos_map,
14551                 .flags = GENL_UNS_ADMIN_PERM,
14552                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14553                                   NL80211_FLAG_NEED_RTNL,
14554         },
14555         {
14556                 .cmd = NL80211_CMD_ADD_TX_TS,
14557                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14558                 .doit = nl80211_add_tx_ts,
14559                 .flags = GENL_UNS_ADMIN_PERM,
14560                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14561                                   NL80211_FLAG_NEED_RTNL,
14562         },
14563         {
14564                 .cmd = NL80211_CMD_DEL_TX_TS,
14565                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14566                 .doit = nl80211_del_tx_ts,
14567                 .flags = GENL_UNS_ADMIN_PERM,
14568                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14569                                   NL80211_FLAG_NEED_RTNL,
14570         },
14571         {
14572                 .cmd = NL80211_CMD_TDLS_CHANNEL_SWITCH,
14573                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14574                 .doit = nl80211_tdls_channel_switch,
14575                 .flags = GENL_UNS_ADMIN_PERM,
14576                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14577                                   NL80211_FLAG_NEED_RTNL,
14578         },
14579         {
14580                 .cmd = NL80211_CMD_TDLS_CANCEL_CHANNEL_SWITCH,
14581                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14582                 .doit = nl80211_tdls_cancel_channel_switch,
14583                 .flags = GENL_UNS_ADMIN_PERM,
14584                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14585                                   NL80211_FLAG_NEED_RTNL,
14586         },
14587         {
14588                 .cmd = NL80211_CMD_SET_MULTICAST_TO_UNICAST,
14589                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14590                 .doit = nl80211_set_multicast_to_unicast,
14591                 .flags = GENL_UNS_ADMIN_PERM,
14592                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
14593                                   NL80211_FLAG_NEED_RTNL,
14594         },
14595         {
14596                 .cmd = NL80211_CMD_SET_PMK,
14597                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14598                 .doit = nl80211_set_pmk,
14599                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14600                                   NL80211_FLAG_NEED_RTNL |
14601                                   NL80211_FLAG_CLEAR_SKB,
14602         },
14603         {
14604                 .cmd = NL80211_CMD_DEL_PMK,
14605                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14606                 .doit = nl80211_del_pmk,
14607                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14608                                   NL80211_FLAG_NEED_RTNL,
14609         },
14610         {
14611                 .cmd = NL80211_CMD_EXTERNAL_AUTH,
14612                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14613                 .doit = nl80211_external_auth,
14614                 .flags = GENL_ADMIN_PERM,
14615                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14616                                   NL80211_FLAG_NEED_RTNL,
14617         },
14618         {
14619                 .cmd = NL80211_CMD_CONTROL_PORT_FRAME,
14620                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14621                 .doit = nl80211_tx_control_port,
14622                 .flags = GENL_UNS_ADMIN_PERM,
14623                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14624                                   NL80211_FLAG_NEED_RTNL,
14625         },
14626         {
14627                 .cmd = NL80211_CMD_GET_FTM_RESPONDER_STATS,
14628                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14629                 .doit = nl80211_get_ftm_responder_stats,
14630                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
14631                                   NL80211_FLAG_NEED_RTNL,
14632         },
14633         {
14634                 .cmd = NL80211_CMD_PEER_MEASUREMENT_START,
14635                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14636                 .doit = nl80211_pmsr_start,
14637                 .flags = GENL_UNS_ADMIN_PERM,
14638                 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
14639                                   NL80211_FLAG_NEED_RTNL,
14640         },
14641         {
14642                 .cmd = NL80211_CMD_NOTIFY_RADAR,
14643                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14644                 .doit = nl80211_notify_radar_detection,
14645                 .flags = GENL_UNS_ADMIN_PERM,
14646                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14647                                   NL80211_FLAG_NEED_RTNL,
14648         },
14649         {
14650                 .cmd = NL80211_CMD_UPDATE_OWE_INFO,
14651                 .doit = nl80211_update_owe_info,
14652                 .flags = GENL_ADMIN_PERM,
14653                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14654                                   NL80211_FLAG_NEED_RTNL,
14655         },
14656         {
14657                 .cmd = NL80211_CMD_PROBE_MESH_LINK,
14658                 .doit = nl80211_probe_mesh_link,
14659                 .flags = GENL_UNS_ADMIN_PERM,
14660                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14661                                   NL80211_FLAG_NEED_RTNL,
14662         },
14663 };
14664
14665 static struct genl_family nl80211_fam __ro_after_init = {
14666         .name = NL80211_GENL_NAME,      /* have users key off the name instead */
14667         .hdrsize = 0,                   /* no private header */
14668         .version = 1,                   /* no particular meaning now */
14669         .maxattr = NL80211_ATTR_MAX,
14670         .policy = nl80211_policy,
14671         .netnsok = true,
14672         .pre_doit = nl80211_pre_doit,
14673         .post_doit = nl80211_post_doit,
14674         .module = THIS_MODULE,
14675         .ops = nl80211_ops,
14676         .n_ops = ARRAY_SIZE(nl80211_ops),
14677         .mcgrps = nl80211_mcgrps,
14678         .n_mcgrps = ARRAY_SIZE(nl80211_mcgrps),
14679         .parallel_ops = true,
14680 };
14681
14682 /* notification functions */
14683
14684 void nl80211_notify_wiphy(struct cfg80211_registered_device *rdev,
14685                           enum nl80211_commands cmd)
14686 {
14687         struct sk_buff *msg;
14688         struct nl80211_dump_wiphy_state state = {};
14689
14690         WARN_ON(cmd != NL80211_CMD_NEW_WIPHY &&
14691                 cmd != NL80211_CMD_DEL_WIPHY);
14692
14693         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
14694         if (!msg)
14695                 return;
14696
14697         if (nl80211_send_wiphy(rdev, cmd, msg, 0, 0, 0, &state) < 0) {
14698                 nlmsg_free(msg);
14699                 return;
14700         }
14701
14702         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
14703                                 NL80211_MCGRP_CONFIG, GFP_KERNEL);
14704 }
14705
14706 void nl80211_notify_iface(struct cfg80211_registered_device *rdev,
14707                                 struct wireless_dev *wdev,
14708                                 enum nl80211_commands cmd)
14709 {
14710         struct sk_buff *msg;
14711
14712         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
14713         if (!msg)
14714                 return;
14715
14716         if (nl80211_send_iface(msg, 0, 0, 0, rdev, wdev, cmd) < 0) {
14717                 nlmsg_free(msg);
14718                 return;
14719         }
14720
14721         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
14722                                 NL80211_MCGRP_CONFIG, GFP_KERNEL);
14723 }
14724
14725 static int nl80211_add_scan_req(struct sk_buff *msg,
14726                                 struct cfg80211_registered_device *rdev)
14727 {
14728         struct cfg80211_scan_request *req = rdev->scan_req;
14729         struct nlattr *nest;
14730         int i;
14731
14732         if (WARN_ON(!req))
14733                 return 0;
14734
14735         nest = nla_nest_start_noflag(msg, NL80211_ATTR_SCAN_SSIDS);
14736         if (!nest)
14737                 goto nla_put_failure;
14738         for (i = 0; i < req->n_ssids; i++) {
14739                 if (nla_put(msg, i, req->ssids[i].ssid_len, req->ssids[i].ssid))
14740                         goto nla_put_failure;
14741         }
14742         nla_nest_end(msg, nest);
14743
14744         nest = nla_nest_start_noflag(msg, NL80211_ATTR_SCAN_FREQUENCIES);
14745         if (!nest)
14746                 goto nla_put_failure;
14747         for (i = 0; i < req->n_channels; i++) {
14748                 if (nla_put_u32(msg, i, req->channels[i]->center_freq))
14749                         goto nla_put_failure;
14750         }
14751         nla_nest_end(msg, nest);
14752
14753         if (req->ie &&
14754             nla_put(msg, NL80211_ATTR_IE, req->ie_len, req->ie))
14755                 goto nla_put_failure;
14756
14757         if (req->flags &&
14758             nla_put_u32(msg, NL80211_ATTR_SCAN_FLAGS, req->flags))
14759                 goto nla_put_failure;
14760
14761         if (req->info.scan_start_tsf &&
14762             (nla_put_u64_64bit(msg, NL80211_ATTR_SCAN_START_TIME_TSF,
14763                                req->info.scan_start_tsf, NL80211_BSS_PAD) ||
14764              nla_put(msg, NL80211_ATTR_SCAN_START_TIME_TSF_BSSID, ETH_ALEN,
14765                      req->info.tsf_bssid)))
14766                 goto nla_put_failure;
14767
14768         return 0;
14769  nla_put_failure:
14770         return -ENOBUFS;
14771 }
14772
14773 static int nl80211_prep_scan_msg(struct sk_buff *msg,
14774                                  struct cfg80211_registered_device *rdev,
14775                                  struct wireless_dev *wdev,
14776                                  u32 portid, u32 seq, int flags,
14777                                  u32 cmd)
14778 {
14779         void *hdr;
14780
14781         hdr = nl80211hdr_put(msg, portid, seq, flags, cmd);
14782         if (!hdr)
14783                 return -1;
14784
14785         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
14786             (wdev->netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
14787                                          wdev->netdev->ifindex)) ||
14788             nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
14789                               NL80211_ATTR_PAD))
14790                 goto nla_put_failure;
14791
14792         /* ignore errors and send incomplete event anyway */
14793         nl80211_add_scan_req(msg, rdev);
14794
14795         genlmsg_end(msg, hdr);
14796         return 0;
14797
14798  nla_put_failure:
14799         genlmsg_cancel(msg, hdr);
14800         return -EMSGSIZE;
14801 }
14802
14803 static int
14804 nl80211_prep_sched_scan_msg(struct sk_buff *msg,
14805                             struct cfg80211_sched_scan_request *req, u32 cmd)
14806 {
14807         void *hdr;
14808
14809         hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
14810         if (!hdr)
14811                 return -1;
14812
14813         if (nla_put_u32(msg, NL80211_ATTR_WIPHY,
14814                         wiphy_to_rdev(req->wiphy)->wiphy_idx) ||
14815             nla_put_u32(msg, NL80211_ATTR_IFINDEX, req->dev->ifindex) ||
14816             nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, req->reqid,
14817                               NL80211_ATTR_PAD))
14818                 goto nla_put_failure;
14819
14820         genlmsg_end(msg, hdr);
14821         return 0;
14822
14823  nla_put_failure:
14824         genlmsg_cancel(msg, hdr);
14825         return -EMSGSIZE;
14826 }
14827
14828 void nl80211_send_scan_start(struct cfg80211_registered_device *rdev,
14829                              struct wireless_dev *wdev)
14830 {
14831         struct sk_buff *msg;
14832
14833         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
14834         if (!msg)
14835                 return;
14836
14837         if (nl80211_prep_scan_msg(msg, rdev, wdev, 0, 0, 0,
14838                                   NL80211_CMD_TRIGGER_SCAN) < 0) {
14839                 nlmsg_free(msg);
14840                 return;
14841         }
14842
14843         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
14844                                 NL80211_MCGRP_SCAN, GFP_KERNEL);
14845 }
14846
14847 struct sk_buff *nl80211_build_scan_msg(struct cfg80211_registered_device *rdev,
14848                                        struct wireless_dev *wdev, bool aborted)
14849 {
14850         struct sk_buff *msg;
14851
14852         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
14853         if (!msg)
14854                 return NULL;
14855
14856         if (nl80211_prep_scan_msg(msg, rdev, wdev, 0, 0, 0,
14857                                   aborted ? NL80211_CMD_SCAN_ABORTED :
14858                                             NL80211_CMD_NEW_SCAN_RESULTS) < 0) {
14859                 nlmsg_free(msg);
14860                 return NULL;
14861         }
14862
14863         return msg;
14864 }
14865
14866 /* send message created by nl80211_build_scan_msg() */
14867 void nl80211_send_scan_msg(struct cfg80211_registered_device *rdev,
14868                            struct sk_buff *msg)
14869 {
14870         if (!msg)
14871                 return;
14872
14873         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
14874                                 NL80211_MCGRP_SCAN, GFP_KERNEL);
14875 }
14876
14877 void nl80211_send_sched_scan(struct cfg80211_sched_scan_request *req, u32 cmd)
14878 {
14879         struct sk_buff *msg;
14880
14881         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
14882         if (!msg)
14883                 return;
14884
14885         if (nl80211_prep_sched_scan_msg(msg, req, cmd) < 0) {
14886                 nlmsg_free(msg);
14887                 return;
14888         }
14889
14890         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(req->wiphy), msg, 0,
14891                                 NL80211_MCGRP_SCAN, GFP_KERNEL);
14892 }
14893
14894 static bool nl80211_reg_change_event_fill(struct sk_buff *msg,
14895                                           struct regulatory_request *request)
14896 {
14897         /* Userspace can always count this one always being set */
14898         if (nla_put_u8(msg, NL80211_ATTR_REG_INITIATOR, request->initiator))
14899                 goto nla_put_failure;
14900
14901         if (request->alpha2[0] == '0' && request->alpha2[1] == '0') {
14902                 if (nla_put_u8(msg, NL80211_ATTR_REG_TYPE,
14903                                NL80211_REGDOM_TYPE_WORLD))
14904                         goto nla_put_failure;
14905         } else if (request->alpha2[0] == '9' && request->alpha2[1] == '9') {
14906                 if (nla_put_u8(msg, NL80211_ATTR_REG_TYPE,
14907                                NL80211_REGDOM_TYPE_CUSTOM_WORLD))
14908                         goto nla_put_failure;
14909         } else if ((request->alpha2[0] == '9' && request->alpha2[1] == '8') ||
14910                    request->intersect) {
14911                 if (nla_put_u8(msg, NL80211_ATTR_REG_TYPE,
14912                                NL80211_REGDOM_TYPE_INTERSECTION))
14913                         goto nla_put_failure;
14914         } else {
14915                 if (nla_put_u8(msg, NL80211_ATTR_REG_TYPE,
14916                                NL80211_REGDOM_TYPE_COUNTRY) ||
14917                     nla_put_string(msg, NL80211_ATTR_REG_ALPHA2,
14918                                    request->alpha2))
14919                         goto nla_put_failure;
14920         }
14921
14922         if (request->wiphy_idx != WIPHY_IDX_INVALID) {
14923                 struct wiphy *wiphy = wiphy_idx_to_wiphy(request->wiphy_idx);
14924
14925                 if (wiphy &&
14926                     nla_put_u32(msg, NL80211_ATTR_WIPHY, request->wiphy_idx))
14927                         goto nla_put_failure;
14928
14929                 if (wiphy &&
14930                     wiphy->regulatory_flags & REGULATORY_WIPHY_SELF_MANAGED &&
14931                     nla_put_flag(msg, NL80211_ATTR_WIPHY_SELF_MANAGED_REG))
14932                         goto nla_put_failure;
14933         }
14934
14935         return true;
14936
14937 nla_put_failure:
14938         return false;
14939 }
14940
14941 /*
14942  * This can happen on global regulatory changes or device specific settings
14943  * based on custom regulatory domains.
14944  */
14945 void nl80211_common_reg_change_event(enum nl80211_commands cmd_id,
14946                                      struct regulatory_request *request)
14947 {
14948         struct sk_buff *msg;
14949         void *hdr;
14950
14951         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
14952         if (!msg)
14953                 return;
14954
14955         hdr = nl80211hdr_put(msg, 0, 0, 0, cmd_id);
14956         if (!hdr) {
14957                 nlmsg_free(msg);
14958                 return;
14959         }
14960
14961         if (nl80211_reg_change_event_fill(msg, request) == false)
14962                 goto nla_put_failure;
14963
14964         genlmsg_end(msg, hdr);
14965
14966         rcu_read_lock();
14967         genlmsg_multicast_allns(&nl80211_fam, msg, 0,
14968                                 NL80211_MCGRP_REGULATORY, GFP_ATOMIC);
14969         rcu_read_unlock();
14970
14971         return;
14972
14973 nla_put_failure:
14974         nlmsg_free(msg);
14975 }
14976
14977 static void nl80211_send_mlme_event(struct cfg80211_registered_device *rdev,
14978                                     struct net_device *netdev,
14979                                     const u8 *buf, size_t len,
14980                                     enum nl80211_commands cmd, gfp_t gfp,
14981                                     int uapsd_queues, const u8 *req_ies,
14982                                     size_t req_ies_len)
14983 {
14984         struct sk_buff *msg;
14985         void *hdr;
14986
14987         msg = nlmsg_new(100 + len + req_ies_len, gfp);
14988         if (!msg)
14989                 return;
14990
14991         hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
14992         if (!hdr) {
14993                 nlmsg_free(msg);
14994                 return;
14995         }
14996
14997         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
14998             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
14999             nla_put(msg, NL80211_ATTR_FRAME, len, buf) ||
15000             (req_ies &&
15001              nla_put(msg, NL80211_ATTR_REQ_IE, req_ies_len, req_ies)))
15002                 goto nla_put_failure;
15003
15004         if (uapsd_queues >= 0) {
15005                 struct nlattr *nla_wmm =
15006                         nla_nest_start_noflag(msg, NL80211_ATTR_STA_WME);
15007                 if (!nla_wmm)
15008                         goto nla_put_failure;
15009
15010                 if (nla_put_u8(msg, NL80211_STA_WME_UAPSD_QUEUES,
15011                                uapsd_queues))
15012                         goto nla_put_failure;
15013
15014                 nla_nest_end(msg, nla_wmm);
15015         }
15016
15017         genlmsg_end(msg, hdr);
15018
15019         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
15020                                 NL80211_MCGRP_MLME, gfp);
15021         return;
15022
15023  nla_put_failure:
15024         nlmsg_free(msg);
15025 }
15026
15027 void nl80211_send_rx_auth(struct cfg80211_registered_device *rdev,
15028                           struct net_device *netdev, const u8 *buf,
15029                           size_t len, gfp_t gfp)
15030 {
15031         nl80211_send_mlme_event(rdev, netdev, buf, len,
15032                                 NL80211_CMD_AUTHENTICATE, gfp, -1, NULL, 0);
15033 }
15034
15035 void nl80211_send_rx_assoc(struct cfg80211_registered_device *rdev,
15036                            struct net_device *netdev, const u8 *buf,
15037                            size_t len, gfp_t gfp, int uapsd_queues,
15038                            const u8 *req_ies, size_t req_ies_len)
15039 {
15040         nl80211_send_mlme_event(rdev, netdev, buf, len,
15041                                 NL80211_CMD_ASSOCIATE, gfp, uapsd_queues,
15042                                 req_ies, req_ies_len);
15043 }
15044
15045 void nl80211_send_deauth(struct cfg80211_registered_device *rdev,
15046                          struct net_device *netdev, const u8 *buf,
15047                          size_t len, gfp_t gfp)
15048 {
15049         nl80211_send_mlme_event(rdev, netdev, buf, len,
15050                                 NL80211_CMD_DEAUTHENTICATE, gfp, -1, NULL, 0);
15051 }
15052
15053 void nl80211_send_disassoc(struct cfg80211_registered_device *rdev,
15054                            struct net_device *netdev, const u8 *buf,
15055                            size_t len, gfp_t gfp)
15056 {
15057         nl80211_send_mlme_event(rdev, netdev, buf, len,
15058                                 NL80211_CMD_DISASSOCIATE, gfp, -1, NULL, 0);
15059 }
15060
15061 void cfg80211_rx_unprot_mlme_mgmt(struct net_device *dev, const u8 *buf,
15062                                   size_t len)
15063 {
15064         struct wireless_dev *wdev = dev->ieee80211_ptr;
15065         struct wiphy *wiphy = wdev->wiphy;
15066         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
15067         const struct ieee80211_mgmt *mgmt = (void *)buf;
15068         u32 cmd;
15069
15070         if (WARN_ON(len < 2))
15071                 return;
15072
15073         if (ieee80211_is_deauth(mgmt->frame_control))
15074                 cmd = NL80211_CMD_UNPROT_DEAUTHENTICATE;
15075         else
15076                 cmd = NL80211_CMD_UNPROT_DISASSOCIATE;
15077
15078         trace_cfg80211_rx_unprot_mlme_mgmt(dev, buf, len);
15079         nl80211_send_mlme_event(rdev, dev, buf, len, cmd, GFP_ATOMIC, -1,
15080                                 NULL, 0);
15081 }
15082 EXPORT_SYMBOL(cfg80211_rx_unprot_mlme_mgmt);
15083
15084 static void nl80211_send_mlme_timeout(struct cfg80211_registered_device *rdev,
15085                                       struct net_device *netdev, int cmd,
15086                                       const u8 *addr, gfp_t gfp)
15087 {
15088         struct sk_buff *msg;
15089         void *hdr;
15090
15091         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
15092         if (!msg)
15093                 return;
15094
15095         hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
15096         if (!hdr) {
15097                 nlmsg_free(msg);
15098                 return;
15099         }
15100
15101         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
15102             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
15103             nla_put_flag(msg, NL80211_ATTR_TIMED_OUT) ||
15104             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr))
15105                 goto nla_put_failure;
15106
15107         genlmsg_end(msg, hdr);
15108
15109         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
15110                                 NL80211_MCGRP_MLME, gfp);
15111         return;
15112
15113  nla_put_failure:
15114         nlmsg_free(msg);
15115 }
15116
15117 void nl80211_send_auth_timeout(struct cfg80211_registered_device *rdev,
15118                                struct net_device *netdev, const u8 *addr,
15119                                gfp_t gfp)
15120 {
15121         nl80211_send_mlme_timeout(rdev, netdev, NL80211_CMD_AUTHENTICATE,
15122                                   addr, gfp);
15123 }
15124
15125 void nl80211_send_assoc_timeout(struct cfg80211_registered_device *rdev,
15126                                 struct net_device *netdev, const u8 *addr,
15127                                 gfp_t gfp)
15128 {
15129         nl80211_send_mlme_timeout(rdev, netdev, NL80211_CMD_ASSOCIATE,
15130                                   addr, gfp);
15131 }
15132
15133 void nl80211_send_connect_result(struct cfg80211_registered_device *rdev,
15134                                  struct net_device *netdev,
15135                                  struct cfg80211_connect_resp_params *cr,
15136                                  gfp_t gfp)
15137 {
15138         struct sk_buff *msg;
15139         void *hdr;
15140
15141         msg = nlmsg_new(100 + cr->req_ie_len + cr->resp_ie_len +
15142                         cr->fils.kek_len + cr->fils.pmk_len +
15143                         (cr->fils.pmkid ? WLAN_PMKID_LEN : 0), gfp);
15144         if (!msg)
15145                 return;
15146
15147         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_CONNECT);
15148         if (!hdr) {
15149                 nlmsg_free(msg);
15150                 return;
15151         }
15152
15153         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
15154             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
15155             (cr->bssid &&
15156              nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, cr->bssid)) ||
15157             nla_put_u16(msg, NL80211_ATTR_STATUS_CODE,
15158                         cr->status < 0 ? WLAN_STATUS_UNSPECIFIED_FAILURE :
15159                         cr->status) ||
15160             (cr->status < 0 &&
15161              (nla_put_flag(msg, NL80211_ATTR_TIMED_OUT) ||
15162               nla_put_u32(msg, NL80211_ATTR_TIMEOUT_REASON,
15163                           cr->timeout_reason))) ||
15164             (cr->req_ie &&
15165              nla_put(msg, NL80211_ATTR_REQ_IE, cr->req_ie_len, cr->req_ie)) ||
15166             (cr->resp_ie &&
15167              nla_put(msg, NL80211_ATTR_RESP_IE, cr->resp_ie_len,
15168                      cr->resp_ie)) ||
15169             (cr->fils.update_erp_next_seq_num &&
15170              nla_put_u16(msg, NL80211_ATTR_FILS_ERP_NEXT_SEQ_NUM,
15171                          cr->fils.erp_next_seq_num)) ||
15172             (cr->status == WLAN_STATUS_SUCCESS &&
15173              ((cr->fils.kek &&
15174                nla_put(msg, NL80211_ATTR_FILS_KEK, cr->fils.kek_len,
15175                        cr->fils.kek)) ||
15176               (cr->fils.pmk &&
15177                nla_put(msg, NL80211_ATTR_PMK, cr->fils.pmk_len, cr->fils.pmk)) ||
15178               (cr->fils.pmkid &&
15179                nla_put(msg, NL80211_ATTR_PMKID, WLAN_PMKID_LEN, cr->fils.pmkid)))))
15180                 goto nla_put_failure;
15181
15182         genlmsg_end(msg, hdr);
15183
15184         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
15185                                 NL80211_MCGRP_MLME, gfp);
15186         return;
15187
15188  nla_put_failure:
15189         nlmsg_free(msg);
15190 }
15191
15192 void nl80211_send_roamed(struct cfg80211_registered_device *rdev,
15193                          struct net_device *netdev,
15194                          struct cfg80211_roam_info *info, gfp_t gfp)
15195 {
15196         struct sk_buff *msg;
15197         void *hdr;
15198         const u8 *bssid = info->bss ? info->bss->bssid : info->bssid;
15199
15200         msg = nlmsg_new(100 + info->req_ie_len + info->resp_ie_len +
15201                         info->fils.kek_len + info->fils.pmk_len +
15202                         (info->fils.pmkid ? WLAN_PMKID_LEN : 0), gfp);
15203         if (!msg)
15204                 return;
15205
15206         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_ROAM);
15207         if (!hdr) {
15208                 nlmsg_free(msg);
15209                 return;
15210         }
15211
15212         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
15213             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
15214             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid) ||
15215             (info->req_ie &&
15216              nla_put(msg, NL80211_ATTR_REQ_IE, info->req_ie_len,
15217                      info->req_ie)) ||
15218             (info->resp_ie &&
15219              nla_put(msg, NL80211_ATTR_RESP_IE, info->resp_ie_len,
15220                      info->resp_ie)) ||
15221             (info->fils.update_erp_next_seq_num &&
15222              nla_put_u16(msg, NL80211_ATTR_FILS_ERP_NEXT_SEQ_NUM,
15223                          info->fils.erp_next_seq_num)) ||
15224             (info->fils.kek &&
15225              nla_put(msg, NL80211_ATTR_FILS_KEK, info->fils.kek_len,
15226                      info->fils.kek)) ||
15227             (info->fils.pmk &&
15228              nla_put(msg, NL80211_ATTR_PMK, info->fils.pmk_len, info->fils.pmk)) ||
15229             (info->fils.pmkid &&
15230              nla_put(msg, NL80211_ATTR_PMKID, WLAN_PMKID_LEN, info->fils.pmkid)))
15231                 goto nla_put_failure;
15232
15233         genlmsg_end(msg, hdr);
15234
15235         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
15236                                 NL80211_MCGRP_MLME, gfp);
15237         return;
15238
15239  nla_put_failure:
15240         nlmsg_free(msg);
15241 }
15242
15243 void nl80211_send_port_authorized(struct cfg80211_registered_device *rdev,
15244                                   struct net_device *netdev, const u8 *bssid)
15245 {
15246         struct sk_buff *msg;
15247         void *hdr;
15248
15249         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
15250         if (!msg)
15251                 return;
15252
15253         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_PORT_AUTHORIZED);
15254         if (!hdr) {
15255                 nlmsg_free(msg);
15256                 return;
15257         }
15258
15259         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
15260             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
15261             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid))
15262                 goto nla_put_failure;
15263
15264         genlmsg_end(msg, hdr);
15265
15266         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
15267                                 NL80211_MCGRP_MLME, GFP_KERNEL);
15268         return;
15269
15270  nla_put_failure:
15271         nlmsg_free(msg);
15272 }
15273
15274 void nl80211_send_disconnected(struct cfg80211_registered_device *rdev,
15275                                struct net_device *netdev, u16 reason,
15276                                const u8 *ie, size_t ie_len, bool from_ap)
15277 {
15278         struct sk_buff *msg;
15279         void *hdr;
15280
15281         msg = nlmsg_new(100 + ie_len, GFP_KERNEL);
15282         if (!msg)
15283                 return;
15284
15285         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_DISCONNECT);
15286         if (!hdr) {
15287                 nlmsg_free(msg);
15288                 return;
15289         }
15290
15291         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
15292             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
15293             (reason &&
15294              nla_put_u16(msg, NL80211_ATTR_REASON_CODE, reason)) ||
15295             (from_ap &&
15296              nla_put_flag(msg, NL80211_ATTR_DISCONNECTED_BY_AP)) ||
15297             (ie && nla_put(msg, NL80211_ATTR_IE, ie_len, ie)))
15298                 goto nla_put_failure;
15299
15300         genlmsg_end(msg, hdr);
15301
15302         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
15303                                 NL80211_MCGRP_MLME, GFP_KERNEL);
15304         return;
15305
15306  nla_put_failure:
15307         nlmsg_free(msg);
15308 }
15309
15310 void nl80211_send_ibss_bssid(struct cfg80211_registered_device *rdev,
15311                              struct net_device *netdev, const u8 *bssid,
15312                              gfp_t gfp)
15313 {
15314         struct sk_buff *msg;
15315         void *hdr;
15316
15317         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
15318         if (!msg)
15319                 return;
15320
15321         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_JOIN_IBSS);
15322         if (!hdr) {
15323                 nlmsg_free(msg);
15324                 return;
15325         }
15326
15327         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
15328             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
15329             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid))
15330                 goto nla_put_failure;
15331
15332         genlmsg_end(msg, hdr);
15333
15334         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
15335                                 NL80211_MCGRP_MLME, gfp);
15336         return;
15337
15338  nla_put_failure:
15339         nlmsg_free(msg);
15340 }
15341
15342 void cfg80211_notify_new_peer_candidate(struct net_device *dev, const u8 *addr,
15343                                         const u8 *ie, u8 ie_len,
15344                                         int sig_dbm, gfp_t gfp)
15345 {
15346         struct wireless_dev *wdev = dev->ieee80211_ptr;
15347         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
15348         struct sk_buff *msg;
15349         void *hdr;
15350
15351         if (WARN_ON(wdev->iftype != NL80211_IFTYPE_MESH_POINT))
15352                 return;
15353
15354         trace_cfg80211_notify_new_peer_candidate(dev, addr);
15355
15356         msg = nlmsg_new(100 + ie_len, gfp);
15357         if (!msg)
15358                 return;
15359
15360         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_NEW_PEER_CANDIDATE);
15361         if (!hdr) {
15362                 nlmsg_free(msg);
15363                 return;
15364         }
15365
15366         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
15367             nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
15368             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr) ||
15369             (ie_len && ie &&
15370              nla_put(msg, NL80211_ATTR_IE, ie_len, ie)) ||
15371             (sig_dbm &&
15372              nla_put_u32(msg, NL80211_ATTR_RX_SIGNAL_DBM, sig_dbm)))
15373                 goto nla_put_failure;
15374
15375         genlmsg_end(msg, hdr);
15376
15377         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
15378                                 NL80211_MCGRP_MLME, gfp);
15379         return;
15380
15381  nla_put_failure:
15382         nlmsg_free(msg);
15383 }
15384 EXPORT_SYMBOL(cfg80211_notify_new_peer_candidate);
15385
15386 void nl80211_michael_mic_failure(struct cfg80211_registered_device *rdev,
15387                                  struct net_device *netdev, const u8 *addr,
15388                                  enum nl80211_key_type key_type, int key_id,
15389                                  const u8 *tsc, gfp_t gfp)
15390 {
15391         struct sk_buff *msg;
15392         void *hdr;
15393
15394         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
15395         if (!msg)
15396                 return;
15397
15398         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_MICHAEL_MIC_FAILURE);
15399         if (!hdr) {
15400                 nlmsg_free(msg);
15401                 return;
15402         }
15403
15404         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
15405             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
15406             (addr && nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr)) ||
15407             nla_put_u32(msg, NL80211_ATTR_KEY_TYPE, key_type) ||
15408             (key_id != -1 &&
15409              nla_put_u8(msg, NL80211_ATTR_KEY_IDX, key_id)) ||
15410             (tsc && nla_put(msg, NL80211_ATTR_KEY_SEQ, 6, tsc)))
15411                 goto nla_put_failure;
15412
15413         genlmsg_end(msg, hdr);
15414
15415         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
15416                                 NL80211_MCGRP_MLME, gfp);
15417         return;
15418
15419  nla_put_failure:
15420         nlmsg_free(msg);
15421 }
15422
15423 void nl80211_send_beacon_hint_event(struct wiphy *wiphy,
15424                                     struct ieee80211_channel *channel_before,
15425                                     struct ieee80211_channel *channel_after)
15426 {
15427         struct sk_buff *msg;
15428         void *hdr;
15429         struct nlattr *nl_freq;
15430
15431         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_ATOMIC);
15432         if (!msg)
15433                 return;
15434
15435         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_REG_BEACON_HINT);
15436         if (!hdr) {
15437                 nlmsg_free(msg);
15438                 return;
15439         }
15440
15441         /*
15442          * Since we are applying the beacon hint to a wiphy we know its
15443          * wiphy_idx is valid
15444          */
15445         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, get_wiphy_idx(wiphy)))
15446                 goto nla_put_failure;
15447
15448         /* Before */
15449         nl_freq = nla_nest_start_noflag(msg, NL80211_ATTR_FREQ_BEFORE);
15450         if (!nl_freq)
15451                 goto nla_put_failure;
15452
15453         if (nl80211_msg_put_channel(msg, wiphy, channel_before, false))
15454                 goto nla_put_failure;
15455         nla_nest_end(msg, nl_freq);
15456
15457         /* After */
15458         nl_freq = nla_nest_start_noflag(msg, NL80211_ATTR_FREQ_AFTER);
15459         if (!nl_freq)
15460                 goto nla_put_failure;
15461
15462         if (nl80211_msg_put_channel(msg, wiphy, channel_after, false))
15463                 goto nla_put_failure;
15464         nla_nest_end(msg, nl_freq);
15465
15466         genlmsg_end(msg, hdr);
15467
15468         rcu_read_lock();
15469         genlmsg_multicast_allns(&nl80211_fam, msg, 0,
15470                                 NL80211_MCGRP_REGULATORY, GFP_ATOMIC);
15471         rcu_read_unlock();
15472
15473         return;
15474
15475 nla_put_failure:
15476         nlmsg_free(msg);
15477 }
15478
15479 static void nl80211_send_remain_on_chan_event(
15480         int cmd, struct cfg80211_registered_device *rdev,
15481         struct wireless_dev *wdev, u64 cookie,
15482         struct ieee80211_channel *chan,
15483         unsigned int duration, gfp_t gfp)
15484 {
15485         struct sk_buff *msg;
15486         void *hdr;
15487
15488         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
15489         if (!msg)
15490                 return;
15491
15492         hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
15493         if (!hdr) {
15494                 nlmsg_free(msg);
15495                 return;
15496         }
15497
15498         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
15499             (wdev->netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
15500                                          wdev->netdev->ifindex)) ||
15501             nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
15502                               NL80211_ATTR_PAD) ||
15503             nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ, chan->center_freq) ||
15504             nla_put_u32(msg, NL80211_ATTR_WIPHY_CHANNEL_TYPE,
15505                         NL80211_CHAN_NO_HT) ||
15506             nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, cookie,
15507                               NL80211_ATTR_PAD))
15508                 goto nla_put_failure;
15509
15510         if (cmd == NL80211_CMD_REMAIN_ON_CHANNEL &&
15511             nla_put_u32(msg, NL80211_ATTR_DURATION, duration))
15512                 goto nla_put_failure;
15513
15514         genlmsg_end(msg, hdr);
15515
15516         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
15517                                 NL80211_MCGRP_MLME, gfp);
15518         return;
15519
15520  nla_put_failure:
15521         nlmsg_free(msg);
15522 }
15523
15524 void cfg80211_ready_on_channel(struct wireless_dev *wdev, u64 cookie,
15525                                struct ieee80211_channel *chan,
15526                                unsigned int duration, gfp_t gfp)
15527 {
15528         struct wiphy *wiphy = wdev->wiphy;
15529         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
15530
15531         trace_cfg80211_ready_on_channel(wdev, cookie, chan, duration);
15532         nl80211_send_remain_on_chan_event(NL80211_CMD_REMAIN_ON_CHANNEL,
15533                                           rdev, wdev, cookie, chan,
15534                                           duration, gfp);
15535 }
15536 EXPORT_SYMBOL(cfg80211_ready_on_channel);
15537
15538 void cfg80211_remain_on_channel_expired(struct wireless_dev *wdev, u64 cookie,
15539                                         struct ieee80211_channel *chan,
15540                                         gfp_t gfp)
15541 {
15542         struct wiphy *wiphy = wdev->wiphy;
15543         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
15544
15545         trace_cfg80211_ready_on_channel_expired(wdev, cookie, chan);
15546         nl80211_send_remain_on_chan_event(NL80211_CMD_CANCEL_REMAIN_ON_CHANNEL,
15547                                           rdev, wdev, cookie, chan, 0, gfp);
15548 }
15549 EXPORT_SYMBOL(cfg80211_remain_on_channel_expired);
15550
15551 void cfg80211_tx_mgmt_expired(struct wireless_dev *wdev, u64 cookie,
15552                                         struct ieee80211_channel *chan,
15553                                         gfp_t gfp)
15554 {
15555         struct wiphy *wiphy = wdev->wiphy;
15556         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
15557
15558         trace_cfg80211_tx_mgmt_expired(wdev, cookie, chan);
15559         nl80211_send_remain_on_chan_event(NL80211_CMD_FRAME_WAIT_CANCEL,
15560                                           rdev, wdev, cookie, chan, 0, gfp);
15561 }
15562 EXPORT_SYMBOL(cfg80211_tx_mgmt_expired);
15563
15564 void cfg80211_new_sta(struct net_device *dev, const u8 *mac_addr,
15565                       struct station_info *sinfo, gfp_t gfp)
15566 {
15567         struct wiphy *wiphy = dev->ieee80211_ptr->wiphy;
15568         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
15569         struct sk_buff *msg;
15570
15571         trace_cfg80211_new_sta(dev, mac_addr, sinfo);
15572
15573         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
15574         if (!msg)
15575                 return;
15576
15577         if (nl80211_send_station(msg, NL80211_CMD_NEW_STATION, 0, 0, 0,
15578                                  rdev, dev, mac_addr, sinfo) < 0) {
15579                 nlmsg_free(msg);
15580                 return;
15581         }
15582
15583         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
15584                                 NL80211_MCGRP_MLME, gfp);
15585 }
15586 EXPORT_SYMBOL(cfg80211_new_sta);
15587
15588 void cfg80211_del_sta_sinfo(struct net_device *dev, const u8 *mac_addr,
15589                             struct station_info *sinfo, gfp_t gfp)
15590 {
15591         struct wiphy *wiphy = dev->ieee80211_ptr->wiphy;
15592         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
15593         struct sk_buff *msg;
15594         struct station_info empty_sinfo = {};
15595
15596         if (!sinfo)
15597                 sinfo = &empty_sinfo;
15598
15599         trace_cfg80211_del_sta(dev, mac_addr);
15600
15601         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
15602         if (!msg) {
15603                 cfg80211_sinfo_release_content(sinfo);
15604                 return;
15605         }
15606
15607         if (nl80211_send_station(msg, NL80211_CMD_DEL_STATION, 0, 0, 0,
15608                                  rdev, dev, mac_addr, sinfo) < 0) {
15609                 nlmsg_free(msg);
15610                 return;
15611         }
15612
15613         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
15614                                 NL80211_MCGRP_MLME, gfp);
15615 }
15616 EXPORT_SYMBOL(cfg80211_del_sta_sinfo);
15617
15618 void cfg80211_conn_failed(struct net_device *dev, const u8 *mac_addr,
15619                           enum nl80211_connect_failed_reason reason,
15620                           gfp_t gfp)
15621 {
15622         struct wiphy *wiphy = dev->ieee80211_ptr->wiphy;
15623         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
15624         struct sk_buff *msg;
15625         void *hdr;
15626
15627         msg = nlmsg_new(NLMSG_GOODSIZE, gfp);
15628         if (!msg)
15629                 return;
15630
15631         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_CONN_FAILED);
15632         if (!hdr) {
15633                 nlmsg_free(msg);
15634                 return;
15635         }
15636
15637         if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
15638             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, mac_addr) ||
15639             nla_put_u32(msg, NL80211_ATTR_CONN_FAILED_REASON, reason))
15640                 goto nla_put_failure;
15641
15642         genlmsg_end(msg, hdr);
15643
15644         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
15645                                 NL80211_MCGRP_MLME, gfp);
15646         return;
15647
15648  nla_put_failure:
15649         nlmsg_free(msg);
15650 }
15651 EXPORT_SYMBOL(cfg80211_conn_failed);
15652
15653 static bool __nl80211_unexpected_frame(struct net_device *dev, u8 cmd,
15654                                        const u8 *addr, gfp_t gfp)
15655 {
15656         struct wireless_dev *wdev = dev->ieee80211_ptr;
15657         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
15658         struct sk_buff *msg;
15659         void *hdr;
15660         u32 nlportid = READ_ONCE(wdev->ap_unexpected_nlportid);
15661
15662         if (!nlportid)
15663                 return false;
15664
15665         msg = nlmsg_new(100, gfp);
15666         if (!msg)
15667                 return true;
15668
15669         hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
15670         if (!hdr) {
15671                 nlmsg_free(msg);
15672                 return true;
15673         }
15674
15675         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
15676             nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
15677             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr))
15678                 goto nla_put_failure;
15679
15680         genlmsg_end(msg, hdr);
15681         genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, nlportid);
15682         return true;
15683
15684  nla_put_failure:
15685         nlmsg_free(msg);
15686         return true;
15687 }
15688
15689 bool cfg80211_rx_spurious_frame(struct net_device *dev,
15690                                 const u8 *addr, gfp_t gfp)
15691 {
15692         struct wireless_dev *wdev = dev->ieee80211_ptr;
15693         bool ret;
15694
15695         trace_cfg80211_rx_spurious_frame(dev, addr);
15696
15697         if (WARN_ON(wdev->iftype != NL80211_IFTYPE_AP &&
15698                     wdev->iftype != NL80211_IFTYPE_P2P_GO)) {
15699                 trace_cfg80211_return_bool(false);
15700                 return false;
15701         }
15702         ret = __nl80211_unexpected_frame(dev, NL80211_CMD_UNEXPECTED_FRAME,
15703                                          addr, gfp);
15704         trace_cfg80211_return_bool(ret);
15705         return ret;
15706 }
15707 EXPORT_SYMBOL(cfg80211_rx_spurious_frame);
15708
15709 bool cfg80211_rx_unexpected_4addr_frame(struct net_device *dev,
15710                                         const u8 *addr, gfp_t gfp)
15711 {
15712         struct wireless_dev *wdev = dev->ieee80211_ptr;
15713         bool ret;
15714
15715         trace_cfg80211_rx_unexpected_4addr_frame(dev, addr);
15716
15717         if (WARN_ON(wdev->iftype != NL80211_IFTYPE_AP &&
15718                     wdev->iftype != NL80211_IFTYPE_P2P_GO &&
15719                     wdev->iftype != NL80211_IFTYPE_AP_VLAN)) {
15720                 trace_cfg80211_return_bool(false);
15721                 return false;
15722         }
15723         ret = __nl80211_unexpected_frame(dev,
15724                                          NL80211_CMD_UNEXPECTED_4ADDR_FRAME,
15725                                          addr, gfp);
15726         trace_cfg80211_return_bool(ret);
15727         return ret;
15728 }
15729 EXPORT_SYMBOL(cfg80211_rx_unexpected_4addr_frame);
15730
15731 int nl80211_send_mgmt(struct cfg80211_registered_device *rdev,
15732                       struct wireless_dev *wdev, u32 nlportid,
15733                       int freq, int sig_dbm,
15734                       const u8 *buf, size_t len, u32 flags, gfp_t gfp)
15735 {
15736         struct net_device *netdev = wdev->netdev;
15737         struct sk_buff *msg;
15738         void *hdr;
15739
15740         msg = nlmsg_new(100 + len, gfp);
15741         if (!msg)
15742                 return -ENOMEM;
15743
15744         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_FRAME);
15745         if (!hdr) {
15746                 nlmsg_free(msg);
15747                 return -ENOMEM;
15748         }
15749
15750         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
15751             (netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
15752                                         netdev->ifindex)) ||
15753             nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
15754                               NL80211_ATTR_PAD) ||
15755             nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ, freq) ||
15756             (sig_dbm &&
15757              nla_put_u32(msg, NL80211_ATTR_RX_SIGNAL_DBM, sig_dbm)) ||
15758             nla_put(msg, NL80211_ATTR_FRAME, len, buf) ||
15759             (flags &&
15760              nla_put_u32(msg, NL80211_ATTR_RXMGMT_FLAGS, flags)))
15761                 goto nla_put_failure;
15762
15763         genlmsg_end(msg, hdr);
15764
15765         return genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, nlportid);
15766
15767  nla_put_failure:
15768         nlmsg_free(msg);
15769         return -ENOBUFS;
15770 }
15771
15772 void cfg80211_mgmt_tx_status(struct wireless_dev *wdev, u64 cookie,
15773                              const u8 *buf, size_t len, bool ack, gfp_t gfp)
15774 {
15775         struct wiphy *wiphy = wdev->wiphy;
15776         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
15777         struct net_device *netdev = wdev->netdev;
15778         struct sk_buff *msg;
15779         void *hdr;
15780
15781         trace_cfg80211_mgmt_tx_status(wdev, cookie, ack);
15782
15783         msg = nlmsg_new(100 + len, gfp);
15784         if (!msg)
15785                 return;
15786
15787         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_FRAME_TX_STATUS);
15788         if (!hdr) {
15789                 nlmsg_free(msg);
15790                 return;
15791         }
15792
15793         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
15794             (netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
15795                                    netdev->ifindex)) ||
15796             nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
15797                               NL80211_ATTR_PAD) ||
15798             nla_put(msg, NL80211_ATTR_FRAME, len, buf) ||
15799             nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, cookie,
15800                               NL80211_ATTR_PAD) ||
15801             (ack && nla_put_flag(msg, NL80211_ATTR_ACK)))
15802                 goto nla_put_failure;
15803
15804         genlmsg_end(msg, hdr);
15805
15806         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
15807                                 NL80211_MCGRP_MLME, gfp);
15808         return;
15809
15810  nla_put_failure:
15811         nlmsg_free(msg);
15812 }
15813 EXPORT_SYMBOL(cfg80211_mgmt_tx_status);
15814
15815 static int __nl80211_rx_control_port(struct net_device *dev,
15816                                      struct sk_buff *skb,
15817                                      bool unencrypted, gfp_t gfp)
15818 {
15819         struct wireless_dev *wdev = dev->ieee80211_ptr;
15820         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
15821         struct ethhdr *ehdr = eth_hdr(skb);
15822         const u8 *addr = ehdr->h_source;
15823         u16 proto = be16_to_cpu(skb->protocol);
15824         struct sk_buff *msg;
15825         void *hdr;
15826         struct nlattr *frame;
15827
15828         u32 nlportid = READ_ONCE(wdev->conn_owner_nlportid);
15829
15830         if (!nlportid)
15831                 return -ENOENT;
15832
15833         msg = nlmsg_new(100 + skb->len, gfp);
15834         if (!msg)
15835                 return -ENOMEM;
15836
15837         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_CONTROL_PORT_FRAME);
15838         if (!hdr) {
15839                 nlmsg_free(msg);
15840                 return -ENOBUFS;
15841         }
15842
15843         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
15844             nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
15845             nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
15846                               NL80211_ATTR_PAD) ||
15847             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr) ||
15848             nla_put_u16(msg, NL80211_ATTR_CONTROL_PORT_ETHERTYPE, proto) ||
15849             (unencrypted && nla_put_flag(msg,
15850                                          NL80211_ATTR_CONTROL_PORT_NO_ENCRYPT)))
15851                 goto nla_put_failure;
15852
15853         frame = nla_reserve(msg, NL80211_ATTR_FRAME, skb->len);
15854         if (!frame)
15855                 goto nla_put_failure;
15856
15857         skb_copy_bits(skb, 0, nla_data(frame), skb->len);
15858         genlmsg_end(msg, hdr);
15859
15860         return genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, nlportid);
15861
15862  nla_put_failure:
15863         nlmsg_free(msg);
15864         return -ENOBUFS;
15865 }
15866
15867 bool cfg80211_rx_control_port(struct net_device *dev,
15868                               struct sk_buff *skb, bool unencrypted)
15869 {
15870         int ret;
15871
15872         trace_cfg80211_rx_control_port(dev, skb, unencrypted);
15873         ret = __nl80211_rx_control_port(dev, skb, unencrypted, GFP_ATOMIC);
15874         trace_cfg80211_return_bool(ret == 0);
15875         return ret == 0;
15876 }
15877 EXPORT_SYMBOL(cfg80211_rx_control_port);
15878
15879 static struct sk_buff *cfg80211_prepare_cqm(struct net_device *dev,
15880                                             const char *mac, gfp_t gfp)
15881 {
15882         struct wireless_dev *wdev = dev->ieee80211_ptr;
15883         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
15884         struct sk_buff *msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
15885         void **cb;
15886
15887         if (!msg)
15888                 return NULL;
15889
15890         cb = (void **)msg->cb;
15891
15892         cb[0] = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_NOTIFY_CQM);
15893         if (!cb[0]) {
15894                 nlmsg_free(msg);
15895                 return NULL;
15896         }
15897
15898         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
15899             nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex))
15900                 goto nla_put_failure;
15901
15902         if (mac && nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, mac))
15903                 goto nla_put_failure;
15904
15905         cb[1] = nla_nest_start_noflag(msg, NL80211_ATTR_CQM);
15906         if (!cb[1])
15907                 goto nla_put_failure;
15908
15909         cb[2] = rdev;
15910
15911         return msg;
15912  nla_put_failure:
15913         nlmsg_free(msg);
15914         return NULL;
15915 }
15916
15917 static void cfg80211_send_cqm(struct sk_buff *msg, gfp_t gfp)
15918 {
15919         void **cb = (void **)msg->cb;
15920         struct cfg80211_registered_device *rdev = cb[2];
15921
15922         nla_nest_end(msg, cb[1]);
15923         genlmsg_end(msg, cb[0]);
15924
15925         memset(msg->cb, 0, sizeof(msg->cb));
15926
15927         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
15928                                 NL80211_MCGRP_MLME, gfp);
15929 }
15930
15931 void cfg80211_cqm_rssi_notify(struct net_device *dev,
15932                               enum nl80211_cqm_rssi_threshold_event rssi_event,
15933                               s32 rssi_level, gfp_t gfp)
15934 {
15935         struct sk_buff *msg;
15936         struct wireless_dev *wdev = dev->ieee80211_ptr;
15937         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
15938
15939         trace_cfg80211_cqm_rssi_notify(dev, rssi_event, rssi_level);
15940
15941         if (WARN_ON(rssi_event != NL80211_CQM_RSSI_THRESHOLD_EVENT_LOW &&
15942                     rssi_event != NL80211_CQM_RSSI_THRESHOLD_EVENT_HIGH))
15943                 return;
15944
15945         if (wdev->cqm_config) {
15946                 wdev->cqm_config->last_rssi_event_value = rssi_level;
15947
15948                 cfg80211_cqm_rssi_update(rdev, dev);
15949
15950                 if (rssi_level == 0)
15951                         rssi_level = wdev->cqm_config->last_rssi_event_value;
15952         }
15953
15954         msg = cfg80211_prepare_cqm(dev, NULL, gfp);
15955         if (!msg)
15956                 return;
15957
15958         if (nla_put_u32(msg, NL80211_ATTR_CQM_RSSI_THRESHOLD_EVENT,
15959                         rssi_event))
15960                 goto nla_put_failure;
15961
15962         if (rssi_level && nla_put_s32(msg, NL80211_ATTR_CQM_RSSI_LEVEL,
15963                                       rssi_level))
15964                 goto nla_put_failure;
15965
15966         cfg80211_send_cqm(msg, gfp);
15967
15968         return;
15969
15970  nla_put_failure:
15971         nlmsg_free(msg);
15972 }
15973 EXPORT_SYMBOL(cfg80211_cqm_rssi_notify);
15974
15975 void cfg80211_cqm_txe_notify(struct net_device *dev,
15976                              const u8 *peer, u32 num_packets,
15977                              u32 rate, u32 intvl, gfp_t gfp)
15978 {
15979         struct sk_buff *msg;
15980
15981         msg = cfg80211_prepare_cqm(dev, peer, gfp);
15982         if (!msg)
15983                 return;
15984
15985         if (nla_put_u32(msg, NL80211_ATTR_CQM_TXE_PKTS, num_packets))
15986                 goto nla_put_failure;
15987
15988         if (nla_put_u32(msg, NL80211_ATTR_CQM_TXE_RATE, rate))
15989                 goto nla_put_failure;
15990
15991         if (nla_put_u32(msg, NL80211_ATTR_CQM_TXE_INTVL, intvl))
15992                 goto nla_put_failure;
15993
15994         cfg80211_send_cqm(msg, gfp);
15995         return;
15996
15997  nla_put_failure:
15998         nlmsg_free(msg);
15999 }
16000 EXPORT_SYMBOL(cfg80211_cqm_txe_notify);
16001
16002 void cfg80211_cqm_pktloss_notify(struct net_device *dev,
16003                                  const u8 *peer, u32 num_packets, gfp_t gfp)
16004 {
16005         struct sk_buff *msg;
16006
16007         trace_cfg80211_cqm_pktloss_notify(dev, peer, num_packets);
16008
16009         msg = cfg80211_prepare_cqm(dev, peer, gfp);
16010         if (!msg)
16011                 return;
16012
16013         if (nla_put_u32(msg, NL80211_ATTR_CQM_PKT_LOSS_EVENT, num_packets))
16014                 goto nla_put_failure;
16015
16016         cfg80211_send_cqm(msg, gfp);
16017         return;
16018
16019  nla_put_failure:
16020         nlmsg_free(msg);
16021 }
16022 EXPORT_SYMBOL(cfg80211_cqm_pktloss_notify);
16023
16024 void cfg80211_cqm_beacon_loss_notify(struct net_device *dev, gfp_t gfp)
16025 {
16026         struct sk_buff *msg;
16027
16028         msg = cfg80211_prepare_cqm(dev, NULL, gfp);
16029         if (!msg)
16030                 return;
16031
16032         if (nla_put_flag(msg, NL80211_ATTR_CQM_BEACON_LOSS_EVENT))
16033                 goto nla_put_failure;
16034
16035         cfg80211_send_cqm(msg, gfp);
16036         return;
16037
16038  nla_put_failure:
16039         nlmsg_free(msg);
16040 }
16041 EXPORT_SYMBOL(cfg80211_cqm_beacon_loss_notify);
16042
16043 static void nl80211_gtk_rekey_notify(struct cfg80211_registered_device *rdev,
16044                                      struct net_device *netdev, const u8 *bssid,
16045                                      const u8 *replay_ctr, gfp_t gfp)
16046 {
16047         struct sk_buff *msg;
16048         struct nlattr *rekey_attr;
16049         void *hdr;
16050
16051         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
16052         if (!msg)
16053                 return;
16054
16055         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_SET_REKEY_OFFLOAD);
16056         if (!hdr) {
16057                 nlmsg_free(msg);
16058                 return;
16059         }
16060
16061         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
16062             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
16063             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid))
16064                 goto nla_put_failure;
16065
16066         rekey_attr = nla_nest_start_noflag(msg, NL80211_ATTR_REKEY_DATA);
16067         if (!rekey_attr)
16068                 goto nla_put_failure;
16069
16070         if (nla_put(msg, NL80211_REKEY_DATA_REPLAY_CTR,
16071                     NL80211_REPLAY_CTR_LEN, replay_ctr))
16072                 goto nla_put_failure;
16073
16074         nla_nest_end(msg, rekey_attr);
16075
16076         genlmsg_end(msg, hdr);
16077
16078         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
16079                                 NL80211_MCGRP_MLME, gfp);
16080         return;
16081
16082  nla_put_failure:
16083         nlmsg_free(msg);
16084 }
16085
16086 void cfg80211_gtk_rekey_notify(struct net_device *dev, const u8 *bssid,
16087                                const u8 *replay_ctr, gfp_t gfp)
16088 {
16089         struct wireless_dev *wdev = dev->ieee80211_ptr;
16090         struct wiphy *wiphy = wdev->wiphy;
16091         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
16092
16093         trace_cfg80211_gtk_rekey_notify(dev, bssid);
16094         nl80211_gtk_rekey_notify(rdev, dev, bssid, replay_ctr, gfp);
16095 }
16096 EXPORT_SYMBOL(cfg80211_gtk_rekey_notify);
16097
16098 static void
16099 nl80211_pmksa_candidate_notify(struct cfg80211_registered_device *rdev,
16100                                struct net_device *netdev, int index,
16101                                const u8 *bssid, bool preauth, gfp_t gfp)
16102 {
16103         struct sk_buff *msg;
16104         struct nlattr *attr;
16105         void *hdr;
16106
16107         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
16108         if (!msg)
16109                 return;
16110
16111         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_PMKSA_CANDIDATE);
16112         if (!hdr) {
16113                 nlmsg_free(msg);
16114                 return;
16115         }
16116
16117         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
16118             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex))
16119                 goto nla_put_failure;
16120
16121         attr = nla_nest_start_noflag(msg, NL80211_ATTR_PMKSA_CANDIDATE);
16122         if (!attr)
16123                 goto nla_put_failure;
16124
16125         if (nla_put_u32(msg, NL80211_PMKSA_CANDIDATE_INDEX, index) ||
16126             nla_put(msg, NL80211_PMKSA_CANDIDATE_BSSID, ETH_ALEN, bssid) ||
16127             (preauth &&
16128              nla_put_flag(msg, NL80211_PMKSA_CANDIDATE_PREAUTH)))
16129                 goto nla_put_failure;
16130
16131         nla_nest_end(msg, attr);
16132
16133         genlmsg_end(msg, hdr);
16134
16135         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
16136                                 NL80211_MCGRP_MLME, gfp);
16137         return;
16138
16139  nla_put_failure:
16140         nlmsg_free(msg);
16141 }
16142
16143 void cfg80211_pmksa_candidate_notify(struct net_device *dev, int index,
16144                                      const u8 *bssid, bool preauth, gfp_t gfp)
16145 {
16146         struct wireless_dev *wdev = dev->ieee80211_ptr;
16147         struct wiphy *wiphy = wdev->wiphy;
16148         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
16149
16150         trace_cfg80211_pmksa_candidate_notify(dev, index, bssid, preauth);
16151         nl80211_pmksa_candidate_notify(rdev, dev, index, bssid, preauth, gfp);
16152 }
16153 EXPORT_SYMBOL(cfg80211_pmksa_candidate_notify);
16154
16155 static void nl80211_ch_switch_notify(struct cfg80211_registered_device *rdev,
16156                                      struct net_device *netdev,
16157                                      struct cfg80211_chan_def *chandef,
16158                                      gfp_t gfp,
16159                                      enum nl80211_commands notif,
16160                                      u8 count)
16161 {
16162         struct sk_buff *msg;
16163         void *hdr;
16164
16165         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
16166         if (!msg)
16167                 return;
16168
16169         hdr = nl80211hdr_put(msg, 0, 0, 0, notif);
16170         if (!hdr) {
16171                 nlmsg_free(msg);
16172                 return;
16173         }
16174
16175         if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex))
16176                 goto nla_put_failure;
16177
16178         if (nl80211_send_chandef(msg, chandef))
16179                 goto nla_put_failure;
16180
16181         if ((notif == NL80211_CMD_CH_SWITCH_STARTED_NOTIFY) &&
16182             (nla_put_u32(msg, NL80211_ATTR_CH_SWITCH_COUNT, count)))
16183                         goto nla_put_failure;
16184
16185         genlmsg_end(msg, hdr);
16186
16187         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
16188                                 NL80211_MCGRP_MLME, gfp);
16189         return;
16190
16191  nla_put_failure:
16192         nlmsg_free(msg);
16193 }
16194
16195 void cfg80211_ch_switch_notify(struct net_device *dev,
16196                                struct cfg80211_chan_def *chandef)
16197 {
16198         struct wireless_dev *wdev = dev->ieee80211_ptr;
16199         struct wiphy *wiphy = wdev->wiphy;
16200         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
16201
16202         ASSERT_WDEV_LOCK(wdev);
16203
16204         trace_cfg80211_ch_switch_notify(dev, chandef);
16205
16206         wdev->chandef = *chandef;
16207         wdev->preset_chandef = *chandef;
16208
16209         if (wdev->iftype == NL80211_IFTYPE_STATION &&
16210             !WARN_ON(!wdev->current_bss))
16211                 cfg80211_update_assoc_bss_entry(wdev, chandef->chan);
16212
16213         cfg80211_sched_dfs_chan_update(rdev);
16214
16215         nl80211_ch_switch_notify(rdev, dev, chandef, GFP_KERNEL,
16216                                  NL80211_CMD_CH_SWITCH_NOTIFY, 0);
16217 }
16218 EXPORT_SYMBOL(cfg80211_ch_switch_notify);
16219
16220 void cfg80211_ch_switch_started_notify(struct net_device *dev,
16221                                        struct cfg80211_chan_def *chandef,
16222                                        u8 count)
16223 {
16224         struct wireless_dev *wdev = dev->ieee80211_ptr;
16225         struct wiphy *wiphy = wdev->wiphy;
16226         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
16227
16228         trace_cfg80211_ch_switch_started_notify(dev, chandef);
16229
16230         nl80211_ch_switch_notify(rdev, dev, chandef, GFP_KERNEL,
16231                                  NL80211_CMD_CH_SWITCH_STARTED_NOTIFY, count);
16232 }
16233 EXPORT_SYMBOL(cfg80211_ch_switch_started_notify);
16234
16235 void
16236 nl80211_radar_notify(struct cfg80211_registered_device *rdev,
16237                      const struct cfg80211_chan_def *chandef,
16238                      enum nl80211_radar_event event,
16239                      struct net_device *netdev, gfp_t gfp)
16240 {
16241         struct sk_buff *msg;
16242         void *hdr;
16243
16244         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
16245         if (!msg)
16246                 return;
16247
16248         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_RADAR_DETECT);
16249         if (!hdr) {
16250                 nlmsg_free(msg);
16251                 return;
16252         }
16253
16254         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx))
16255                 goto nla_put_failure;
16256
16257         /* NOP and radar events don't need a netdev parameter */
16258         if (netdev) {
16259                 struct wireless_dev *wdev = netdev->ieee80211_ptr;
16260
16261                 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
16262                     nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
16263                                       NL80211_ATTR_PAD))
16264                         goto nla_put_failure;
16265         }
16266
16267         if (nla_put_u32(msg, NL80211_ATTR_RADAR_EVENT, event))
16268                 goto nla_put_failure;
16269
16270         if (nl80211_send_chandef(msg, chandef))
16271                 goto nla_put_failure;
16272
16273         genlmsg_end(msg, hdr);
16274
16275         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
16276                                 NL80211_MCGRP_MLME, gfp);
16277         return;
16278
16279  nla_put_failure:
16280         nlmsg_free(msg);
16281 }
16282
16283 void cfg80211_sta_opmode_change_notify(struct net_device *dev, const u8 *mac,
16284                                        struct sta_opmode_info *sta_opmode,
16285                                        gfp_t gfp)
16286 {
16287         struct sk_buff *msg;
16288         struct wireless_dev *wdev = dev->ieee80211_ptr;
16289         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
16290         void *hdr;
16291
16292         if (WARN_ON(!mac))
16293                 return;
16294
16295         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
16296         if (!msg)
16297                 return;
16298
16299         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_STA_OPMODE_CHANGED);
16300         if (!hdr) {
16301                 nlmsg_free(msg);
16302                 return;
16303         }
16304
16305         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx))
16306                 goto nla_put_failure;
16307
16308         if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex))
16309                 goto nla_put_failure;
16310
16311         if (nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, mac))
16312                 goto nla_put_failure;
16313
16314         if ((sta_opmode->changed & STA_OPMODE_SMPS_MODE_CHANGED) &&
16315             nla_put_u8(msg, NL80211_ATTR_SMPS_MODE, sta_opmode->smps_mode))
16316                 goto nla_put_failure;
16317
16318         if ((sta_opmode->changed & STA_OPMODE_MAX_BW_CHANGED) &&
16319             nla_put_u8(msg, NL80211_ATTR_CHANNEL_WIDTH, sta_opmode->bw))
16320                 goto nla_put_failure;
16321
16322         if ((sta_opmode->changed & STA_OPMODE_N_SS_CHANGED) &&
16323             nla_put_u8(msg, NL80211_ATTR_NSS, sta_opmode->rx_nss))
16324                 goto nla_put_failure;
16325
16326         genlmsg_end(msg, hdr);
16327
16328         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
16329                                 NL80211_MCGRP_MLME, gfp);
16330
16331         return;
16332
16333 nla_put_failure:
16334         nlmsg_free(msg);
16335 }
16336 EXPORT_SYMBOL(cfg80211_sta_opmode_change_notify);
16337
16338 void cfg80211_probe_status(struct net_device *dev, const u8 *addr,
16339                            u64 cookie, bool acked, s32 ack_signal,
16340                            bool is_valid_ack_signal, gfp_t gfp)
16341 {
16342         struct wireless_dev *wdev = dev->ieee80211_ptr;
16343         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
16344         struct sk_buff *msg;
16345         void *hdr;
16346
16347         trace_cfg80211_probe_status(dev, addr, cookie, acked);
16348
16349         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
16350
16351         if (!msg)
16352                 return;
16353
16354         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_PROBE_CLIENT);
16355         if (!hdr) {
16356                 nlmsg_free(msg);
16357                 return;
16358         }
16359
16360         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
16361             nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
16362             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr) ||
16363             nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, cookie,
16364                               NL80211_ATTR_PAD) ||
16365             (acked && nla_put_flag(msg, NL80211_ATTR_ACK)) ||
16366             (is_valid_ack_signal && nla_put_s32(msg, NL80211_ATTR_ACK_SIGNAL,
16367                                                 ack_signal)))
16368                 goto nla_put_failure;
16369
16370         genlmsg_end(msg, hdr);
16371
16372         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
16373                                 NL80211_MCGRP_MLME, gfp);
16374         return;
16375
16376  nla_put_failure:
16377         nlmsg_free(msg);
16378 }
16379 EXPORT_SYMBOL(cfg80211_probe_status);
16380
16381 void cfg80211_report_obss_beacon(struct wiphy *wiphy,
16382                                  const u8 *frame, size_t len,
16383                                  int freq, int sig_dbm)
16384 {
16385         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
16386         struct sk_buff *msg;
16387         void *hdr;
16388         struct cfg80211_beacon_registration *reg;
16389
16390         trace_cfg80211_report_obss_beacon(wiphy, frame, len, freq, sig_dbm);
16391
16392         spin_lock_bh(&rdev->beacon_registrations_lock);
16393         list_for_each_entry(reg, &rdev->beacon_registrations, list) {
16394                 msg = nlmsg_new(len + 100, GFP_ATOMIC);
16395                 if (!msg) {
16396                         spin_unlock_bh(&rdev->beacon_registrations_lock);
16397                         return;
16398                 }
16399
16400                 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_FRAME);
16401                 if (!hdr)
16402                         goto nla_put_failure;
16403
16404                 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
16405                     (freq &&
16406                      nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ, freq)) ||
16407                     (sig_dbm &&
16408                      nla_put_u32(msg, NL80211_ATTR_RX_SIGNAL_DBM, sig_dbm)) ||
16409                     nla_put(msg, NL80211_ATTR_FRAME, len, frame))
16410                         goto nla_put_failure;
16411
16412                 genlmsg_end(msg, hdr);
16413
16414                 genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, reg->nlportid);
16415         }
16416         spin_unlock_bh(&rdev->beacon_registrations_lock);
16417         return;
16418
16419  nla_put_failure:
16420         spin_unlock_bh(&rdev->beacon_registrations_lock);
16421         nlmsg_free(msg);
16422 }
16423 EXPORT_SYMBOL(cfg80211_report_obss_beacon);
16424
16425 #ifdef CONFIG_PM
16426 static int cfg80211_net_detect_results(struct sk_buff *msg,
16427                                        struct cfg80211_wowlan_wakeup *wakeup)
16428 {
16429         struct cfg80211_wowlan_nd_info *nd = wakeup->net_detect;
16430         struct nlattr *nl_results, *nl_match, *nl_freqs;
16431         int i, j;
16432
16433         nl_results = nla_nest_start_noflag(msg,
16434                                            NL80211_WOWLAN_TRIG_NET_DETECT_RESULTS);
16435         if (!nl_results)
16436                 return -EMSGSIZE;
16437
16438         for (i = 0; i < nd->n_matches; i++) {
16439                 struct cfg80211_wowlan_nd_match *match = nd->matches[i];
16440
16441                 nl_match = nla_nest_start_noflag(msg, i);
16442                 if (!nl_match)
16443                         break;
16444
16445                 /* The SSID attribute is optional in nl80211, but for
16446                  * simplicity reasons it's always present in the
16447                  * cfg80211 structure.  If a driver can't pass the
16448                  * SSID, that needs to be changed.  A zero length SSID
16449                  * is still a valid SSID (wildcard), so it cannot be
16450                  * used for this purpose.
16451                  */
16452                 if (nla_put(msg, NL80211_ATTR_SSID, match->ssid.ssid_len,
16453                             match->ssid.ssid)) {
16454                         nla_nest_cancel(msg, nl_match);
16455                         goto out;
16456                 }
16457
16458                 if (match->n_channels) {
16459                         nl_freqs = nla_nest_start_noflag(msg,
16460                                                          NL80211_ATTR_SCAN_FREQUENCIES);
16461                         if (!nl_freqs) {
16462                                 nla_nest_cancel(msg, nl_match);
16463                                 goto out;
16464                         }
16465
16466                         for (j = 0; j < match->n_channels; j++) {
16467                                 if (nla_put_u32(msg, j, match->channels[j])) {
16468                                         nla_nest_cancel(msg, nl_freqs);
16469                                         nla_nest_cancel(msg, nl_match);
16470                                         goto out;
16471                                 }
16472                         }
16473
16474                         nla_nest_end(msg, nl_freqs);
16475                 }
16476
16477                 nla_nest_end(msg, nl_match);
16478         }
16479
16480 out:
16481         nla_nest_end(msg, nl_results);
16482         return 0;
16483 }
16484
16485 void cfg80211_report_wowlan_wakeup(struct wireless_dev *wdev,
16486                                    struct cfg80211_wowlan_wakeup *wakeup,
16487                                    gfp_t gfp)
16488 {
16489         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
16490         struct sk_buff *msg;
16491         void *hdr;
16492         int size = 200;
16493
16494         trace_cfg80211_report_wowlan_wakeup(wdev->wiphy, wdev, wakeup);
16495
16496         if (wakeup)
16497                 size += wakeup->packet_present_len;
16498
16499         msg = nlmsg_new(size, gfp);
16500         if (!msg)
16501                 return;
16502
16503         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_SET_WOWLAN);
16504         if (!hdr)
16505                 goto free_msg;
16506
16507         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
16508             nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
16509                               NL80211_ATTR_PAD))
16510                 goto free_msg;
16511
16512         if (wdev->netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
16513                                         wdev->netdev->ifindex))
16514                 goto free_msg;
16515
16516         if (wakeup) {
16517                 struct nlattr *reasons;
16518
16519                 reasons = nla_nest_start_noflag(msg,
16520                                                 NL80211_ATTR_WOWLAN_TRIGGERS);
16521                 if (!reasons)
16522                         goto free_msg;
16523
16524                 if (wakeup->disconnect &&
16525                     nla_put_flag(msg, NL80211_WOWLAN_TRIG_DISCONNECT))
16526                         goto free_msg;
16527                 if (wakeup->magic_pkt &&
16528                     nla_put_flag(msg, NL80211_WOWLAN_TRIG_MAGIC_PKT))
16529                         goto free_msg;
16530                 if (wakeup->gtk_rekey_failure &&
16531                     nla_put_flag(msg, NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE))
16532                         goto free_msg;
16533                 if (wakeup->eap_identity_req &&
16534                     nla_put_flag(msg, NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST))
16535                         goto free_msg;
16536                 if (wakeup->four_way_handshake &&
16537                     nla_put_flag(msg, NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE))
16538                         goto free_msg;
16539                 if (wakeup->rfkill_release &&
16540                     nla_put_flag(msg, NL80211_WOWLAN_TRIG_RFKILL_RELEASE))
16541                         goto free_msg;
16542
16543                 if (wakeup->pattern_idx >= 0 &&
16544                     nla_put_u32(msg, NL80211_WOWLAN_TRIG_PKT_PATTERN,
16545                                 wakeup->pattern_idx))
16546                         goto free_msg;
16547
16548                 if (wakeup->tcp_match &&
16549                     nla_put_flag(msg, NL80211_WOWLAN_TRIG_WAKEUP_TCP_MATCH))
16550                         goto free_msg;
16551
16552                 if (wakeup->tcp_connlost &&
16553                     nla_put_flag(msg, NL80211_WOWLAN_TRIG_WAKEUP_TCP_CONNLOST))
16554                         goto free_msg;
16555
16556                 if (wakeup->tcp_nomoretokens &&
16557                     nla_put_flag(msg,
16558                                  NL80211_WOWLAN_TRIG_WAKEUP_TCP_NOMORETOKENS))
16559                         goto free_msg;
16560
16561                 if (wakeup->packet) {
16562                         u32 pkt_attr = NL80211_WOWLAN_TRIG_WAKEUP_PKT_80211;
16563                         u32 len_attr = NL80211_WOWLAN_TRIG_WAKEUP_PKT_80211_LEN;
16564
16565                         if (!wakeup->packet_80211) {
16566                                 pkt_attr =
16567                                         NL80211_WOWLAN_TRIG_WAKEUP_PKT_8023;
16568                                 len_attr =
16569                                         NL80211_WOWLAN_TRIG_WAKEUP_PKT_8023_LEN;
16570                         }
16571
16572                         if (wakeup->packet_len &&
16573                             nla_put_u32(msg, len_attr, wakeup->packet_len))
16574                                 goto free_msg;
16575
16576                         if (nla_put(msg, pkt_attr, wakeup->packet_present_len,
16577                                     wakeup->packet))
16578                                 goto free_msg;
16579                 }
16580
16581                 if (wakeup->net_detect &&
16582                     cfg80211_net_detect_results(msg, wakeup))
16583                                 goto free_msg;
16584
16585                 nla_nest_end(msg, reasons);
16586         }
16587
16588         genlmsg_end(msg, hdr);
16589
16590         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
16591                                 NL80211_MCGRP_MLME, gfp);
16592         return;
16593
16594  free_msg:
16595         nlmsg_free(msg);
16596 }
16597 EXPORT_SYMBOL(cfg80211_report_wowlan_wakeup);
16598 #endif
16599
16600 void cfg80211_tdls_oper_request(struct net_device *dev, const u8 *peer,
16601                                 enum nl80211_tdls_operation oper,
16602                                 u16 reason_code, gfp_t gfp)
16603 {
16604         struct wireless_dev *wdev = dev->ieee80211_ptr;
16605         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
16606         struct sk_buff *msg;
16607         void *hdr;
16608
16609         trace_cfg80211_tdls_oper_request(wdev->wiphy, dev, peer, oper,
16610                                          reason_code);
16611
16612         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
16613         if (!msg)
16614                 return;
16615
16616         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_TDLS_OPER);
16617         if (!hdr) {
16618                 nlmsg_free(msg);
16619                 return;
16620         }
16621
16622         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
16623             nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
16624             nla_put_u8(msg, NL80211_ATTR_TDLS_OPERATION, oper) ||
16625             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, peer) ||
16626             (reason_code > 0 &&
16627              nla_put_u16(msg, NL80211_ATTR_REASON_CODE, reason_code)))
16628                 goto nla_put_failure;
16629
16630         genlmsg_end(msg, hdr);
16631
16632         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
16633                                 NL80211_MCGRP_MLME, gfp);
16634         return;
16635
16636  nla_put_failure:
16637         nlmsg_free(msg);
16638 }
16639 EXPORT_SYMBOL(cfg80211_tdls_oper_request);
16640
16641 static int nl80211_netlink_notify(struct notifier_block * nb,
16642                                   unsigned long state,
16643                                   void *_notify)
16644 {
16645         struct netlink_notify *notify = _notify;
16646         struct cfg80211_registered_device *rdev;
16647         struct wireless_dev *wdev;
16648         struct cfg80211_beacon_registration *reg, *tmp;
16649
16650         if (state != NETLINK_URELEASE || notify->protocol != NETLINK_GENERIC)
16651                 return NOTIFY_DONE;
16652
16653         rcu_read_lock();
16654
16655         list_for_each_entry_rcu(rdev, &cfg80211_rdev_list, list) {
16656                 struct cfg80211_sched_scan_request *sched_scan_req;
16657
16658                 list_for_each_entry_rcu(sched_scan_req,
16659                                         &rdev->sched_scan_req_list,
16660                                         list) {
16661                         if (sched_scan_req->owner_nlportid == notify->portid) {
16662                                 sched_scan_req->nl_owner_dead = true;
16663                                 schedule_work(&rdev->sched_scan_stop_wk);
16664                         }
16665                 }
16666
16667                 list_for_each_entry_rcu(wdev, &rdev->wiphy.wdev_list, list) {
16668                         cfg80211_mlme_unregister_socket(wdev, notify->portid);
16669
16670                         if (wdev->owner_nlportid == notify->portid) {
16671                                 wdev->nl_owner_dead = true;
16672                                 schedule_work(&rdev->destroy_work);
16673                         } else if (wdev->conn_owner_nlportid == notify->portid) {
16674                                 schedule_work(&wdev->disconnect_wk);
16675                         }
16676
16677                         cfg80211_release_pmsr(wdev, notify->portid);
16678                 }
16679
16680                 spin_lock_bh(&rdev->beacon_registrations_lock);
16681                 list_for_each_entry_safe(reg, tmp, &rdev->beacon_registrations,
16682                                          list) {
16683                         if (reg->nlportid == notify->portid) {
16684                                 list_del(&reg->list);
16685                                 kfree(reg);
16686                                 break;
16687                         }
16688                 }
16689                 spin_unlock_bh(&rdev->beacon_registrations_lock);
16690         }
16691
16692         rcu_read_unlock();
16693
16694         /*
16695          * It is possible that the user space process that is controlling the
16696          * indoor setting disappeared, so notify the regulatory core.
16697          */
16698         regulatory_netlink_notify(notify->portid);
16699         return NOTIFY_OK;
16700 }
16701
16702 static struct notifier_block nl80211_netlink_notifier = {
16703         .notifier_call = nl80211_netlink_notify,
16704 };
16705
16706 void cfg80211_ft_event(struct net_device *netdev,
16707                        struct cfg80211_ft_event_params *ft_event)
16708 {
16709         struct wiphy *wiphy = netdev->ieee80211_ptr->wiphy;
16710         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
16711         struct sk_buff *msg;
16712         void *hdr;
16713
16714         trace_cfg80211_ft_event(wiphy, netdev, ft_event);
16715
16716         if (!ft_event->target_ap)
16717                 return;
16718
16719         msg = nlmsg_new(100 + ft_event->ies_len + ft_event->ric_ies_len,
16720                         GFP_KERNEL);
16721         if (!msg)
16722                 return;
16723
16724         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_FT_EVENT);
16725         if (!hdr)
16726                 goto out;
16727
16728         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
16729             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
16730             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, ft_event->target_ap))
16731                 goto out;
16732
16733         if (ft_event->ies &&
16734             nla_put(msg, NL80211_ATTR_IE, ft_event->ies_len, ft_event->ies))
16735                 goto out;
16736         if (ft_event->ric_ies &&
16737             nla_put(msg, NL80211_ATTR_IE_RIC, ft_event->ric_ies_len,
16738                     ft_event->ric_ies))
16739                 goto out;
16740
16741         genlmsg_end(msg, hdr);
16742
16743         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
16744                                 NL80211_MCGRP_MLME, GFP_KERNEL);
16745         return;
16746  out:
16747         nlmsg_free(msg);
16748 }
16749 EXPORT_SYMBOL(cfg80211_ft_event);
16750
16751 void cfg80211_crit_proto_stopped(struct wireless_dev *wdev, gfp_t gfp)
16752 {
16753         struct cfg80211_registered_device *rdev;
16754         struct sk_buff *msg;
16755         void *hdr;
16756         u32 nlportid;
16757
16758         rdev = wiphy_to_rdev(wdev->wiphy);
16759         if (!rdev->crit_proto_nlportid)
16760                 return;
16761
16762         nlportid = rdev->crit_proto_nlportid;
16763         rdev->crit_proto_nlportid = 0;
16764
16765         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
16766         if (!msg)
16767                 return;
16768
16769         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_CRIT_PROTOCOL_STOP);
16770         if (!hdr)
16771                 goto nla_put_failure;
16772
16773         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
16774             nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
16775                               NL80211_ATTR_PAD))
16776                 goto nla_put_failure;
16777
16778         genlmsg_end(msg, hdr);
16779
16780         genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, nlportid);
16781         return;
16782
16783  nla_put_failure:
16784         nlmsg_free(msg);
16785 }
16786 EXPORT_SYMBOL(cfg80211_crit_proto_stopped);
16787
16788 void nl80211_send_ap_stopped(struct wireless_dev *wdev)
16789 {
16790         struct wiphy *wiphy = wdev->wiphy;
16791         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
16792         struct sk_buff *msg;
16793         void *hdr;
16794
16795         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
16796         if (!msg)
16797                 return;
16798
16799         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_STOP_AP);
16800         if (!hdr)
16801                 goto out;
16802
16803         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
16804             nla_put_u32(msg, NL80211_ATTR_IFINDEX, wdev->netdev->ifindex) ||
16805             nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
16806                               NL80211_ATTR_PAD))
16807                 goto out;
16808
16809         genlmsg_end(msg, hdr);
16810
16811         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(wiphy), msg, 0,
16812                                 NL80211_MCGRP_MLME, GFP_KERNEL);
16813         return;
16814  out:
16815         nlmsg_free(msg);
16816 }
16817
16818 int cfg80211_external_auth_request(struct net_device *dev,
16819                                    struct cfg80211_external_auth_params *params,
16820                                    gfp_t gfp)
16821 {
16822         struct wireless_dev *wdev = dev->ieee80211_ptr;
16823         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
16824         struct sk_buff *msg;
16825         void *hdr;
16826
16827         if (!wdev->conn_owner_nlportid)
16828                 return -EINVAL;
16829
16830         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
16831         if (!msg)
16832                 return -ENOMEM;
16833
16834         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_EXTERNAL_AUTH);
16835         if (!hdr)
16836                 goto nla_put_failure;
16837
16838         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
16839             nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
16840             nla_put_u32(msg, NL80211_ATTR_AKM_SUITES, params->key_mgmt_suite) ||
16841             nla_put_u32(msg, NL80211_ATTR_EXTERNAL_AUTH_ACTION,
16842                         params->action) ||
16843             nla_put(msg, NL80211_ATTR_BSSID, ETH_ALEN, params->bssid) ||
16844             nla_put(msg, NL80211_ATTR_SSID, params->ssid.ssid_len,
16845                     params->ssid.ssid))
16846                 goto nla_put_failure;
16847
16848         genlmsg_end(msg, hdr);
16849         genlmsg_unicast(wiphy_net(&rdev->wiphy), msg,
16850                         wdev->conn_owner_nlportid);
16851         return 0;
16852
16853  nla_put_failure:
16854         nlmsg_free(msg);
16855         return -ENOBUFS;
16856 }
16857 EXPORT_SYMBOL(cfg80211_external_auth_request);
16858
16859 void cfg80211_update_owe_info_event(struct net_device *netdev,
16860                                     struct cfg80211_update_owe_info *owe_info,
16861                                     gfp_t gfp)
16862 {
16863         struct wiphy *wiphy = netdev->ieee80211_ptr->wiphy;
16864         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
16865         struct sk_buff *msg;
16866         void *hdr;
16867
16868         trace_cfg80211_update_owe_info_event(wiphy, netdev, owe_info);
16869
16870         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
16871         if (!msg)
16872                 return;
16873
16874         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_UPDATE_OWE_INFO);
16875         if (!hdr)
16876                 goto nla_put_failure;
16877
16878         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
16879             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
16880             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, owe_info->peer))
16881                 goto nla_put_failure;
16882
16883         if (!owe_info->ie_len ||
16884             nla_put(msg, NL80211_ATTR_IE, owe_info->ie_len, owe_info->ie))
16885                 goto nla_put_failure;
16886
16887         genlmsg_end(msg, hdr);
16888
16889         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
16890                                 NL80211_MCGRP_MLME, gfp);
16891         return;
16892
16893 nla_put_failure:
16894         genlmsg_cancel(msg, hdr);
16895         nlmsg_free(msg);
16896 }
16897 EXPORT_SYMBOL(cfg80211_update_owe_info_event);
16898
16899 /* initialisation/exit functions */
16900
16901 int __init nl80211_init(void)
16902 {
16903         int err;
16904
16905         err = genl_register_family(&nl80211_fam);
16906         if (err)
16907                 return err;
16908
16909         err = netlink_register_notifier(&nl80211_netlink_notifier);
16910         if (err)
16911                 goto err_out;
16912
16913         return 0;
16914  err_out:
16915         genl_unregister_family(&nl80211_fam);
16916         return err;
16917 }
16918
16919 void nl80211_exit(void)
16920 {
16921         netlink_unregister_notifier(&nl80211_netlink_notifier);
16922         genl_unregister_family(&nl80211_fam);
16923 }