Pileus Git - ~andy/linux/blob - net/mac80211/cfg.c

   1 /*
   2  * mac80211 configuration hooks for cfg80211
   3  *
   4  * Copyright 2006-2010  Johannes Berg <johannes@sipsolutions.net>
   5  *
   6  * This file is GPLv2 as found in COPYING.
   7  */
   8
   9 #include <linux/ieee80211.h>
  10 #include <linux/nl80211.h>
  11 #include <linux/rtnetlink.h>
  12 #include <linux/slab.h>
  13 #include <net/net_namespace.h>
  14 #include <linux/rcupdate.h>
  15 #include <linux/if_ether.h>
  16 #include <net/cfg80211.h>
  17 #include "ieee80211_i.h"
  18 #include "driver-ops.h"
  19 #include "cfg.h"
  20 #include "rate.h"
  21 #include "mesh.h"
  22
  23 static struct wireless_dev *ieee80211_add_iface(struct wiphy *wiphy,
  24                                                 const char *name,
  25                                                 enum nl80211_iftype type,
  26                                                 u32 *flags,
  27                                                 struct vif_params *params)
  28 {
  29         struct ieee80211_local *local = wiphy_priv(wiphy);
  30         struct wireless_dev *wdev;
  31         struct ieee80211_sub_if_data *sdata;
  32         int err;
  33
  34         err = ieee80211_if_add(local, name, &wdev, type, params);
  35         if (err)
  36                 return ERR_PTR(err);
  37
  38         if (type == NL80211_IFTYPE_MONITOR && flags) {
  39                 sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
  40                 sdata->u.mntr_flags = *flags;
  41         }
  42
  43         return wdev;
  44 }
  45
  46 static int ieee80211_del_iface(struct wiphy *wiphy, struct wireless_dev *wdev)
  47 {
  48         ieee80211_if_remove(IEEE80211_WDEV_TO_SUB_IF(wdev));
  49
  50         return 0;
  51 }
  52
  53 static int ieee80211_change_iface(struct wiphy *wiphy,
  54                                   struct net_device *dev,
  55                                   enum nl80211_iftype type, u32 *flags,
  56                                   struct vif_params *params)
  57 {
  58         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
  59         int ret;
  60
  61         ret = ieee80211_if_change_type(sdata, type);
  62         if (ret)
  63                 return ret;
  64
  65         if (type == NL80211_IFTYPE_AP_VLAN &&
  66             params && params->use_4addr == 0)
  67                 RCU_INIT_POINTER(sdata->u.vlan.sta, NULL);
  68         else if (type == NL80211_IFTYPE_STATION &&
  69                  params && params->use_4addr >= 0)
  70                 sdata->u.mgd.use_4addr = params->use_4addr;
  71
  72         if (sdata->vif.type == NL80211_IFTYPE_MONITOR && flags) {
  73                 struct ieee80211_local *local = sdata->local;
  74
  75                 if (ieee80211_sdata_running(sdata)) {
  76                         u32 mask = MONITOR_FLAG_COOK_FRAMES |
  77                                    MONITOR_FLAG_ACTIVE;
  78
  79                         /*
  80                          * Prohibit MONITOR_FLAG_COOK_FRAMES and
  81                          * MONITOR_FLAG_ACTIVE to be changed while the
  82                          * interface is up.
  83                          * Else we would need to add a lot of cruft
  84                          * to update everything:
  85                          *      cooked_mntrs, monitor and all fif_* counters
  86                          *      reconfigure hardware
  87                          */
  88                         if ((*flags & mask) != (sdata->u.mntr_flags & mask))
  89                                 return -EBUSY;
  90
  91                         ieee80211_adjust_monitor_flags(sdata, -1);
  92                         sdata->u.mntr_flags = *flags;
  93                         ieee80211_adjust_monitor_flags(sdata, 1);
  94
  95                         ieee80211_configure_filter(local);
  96                 } else {
  97                         /*
  98                          * Because the interface is down, ieee80211_do_stop
  99                          * and ieee80211_do_open take care of "everything"
 100                          * mentioned in the comment above.
 101                          */
 102                         sdata->u.mntr_flags = *flags;
 103                 }
 104         }
 105
 106         return 0;
 107 }
 108
 109 static int ieee80211_start_p2p_device(struct wiphy *wiphy,
 110                                       struct wireless_dev *wdev)
 111 {
 112         return ieee80211_do_open(wdev, true);
 113 }
 114
 115 static void ieee80211_stop_p2p_device(struct wiphy *wiphy,
 116                                       struct wireless_dev *wdev)
 117 {
 118         ieee80211_sdata_stop(IEEE80211_WDEV_TO_SUB_IF(wdev));
 119 }
 120
 121 static int ieee80211_set_noack_map(struct wiphy *wiphy,
 122                                   struct net_device *dev,
 123                                   u16 noack_map)
 124 {
 125         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 126
 127         sdata->noack_map = noack_map;
 128         return 0;
 129 }
 130
 131 static int ieee80211_add_key(struct wiphy *wiphy, struct net_device *dev,
 132                              u8 key_idx, bool pairwise, const u8 *mac_addr,
 133                              struct key_params *params)
 134 {
 135         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 136         struct ieee80211_local *local = sdata->local;
 137         struct sta_info *sta = NULL;
 138         const struct ieee80211_cipher_scheme *cs = NULL;
 139         struct ieee80211_key *key;
 140         int err;
 141
 142         if (!ieee80211_sdata_running(sdata))
 143                 return -ENETDOWN;
 144
 145         /* reject WEP and TKIP keys if WEP failed to initialize */
 146         switch (params->cipher) {
 147         case WLAN_CIPHER_SUITE_WEP40:
 148         case WLAN_CIPHER_SUITE_TKIP:
 149         case WLAN_CIPHER_SUITE_WEP104:
 150                 if (IS_ERR(local->wep_tx_tfm))
 151                         return -EINVAL;
 152                 break;
 153         case WLAN_CIPHER_SUITE_CCMP:
 154         case WLAN_CIPHER_SUITE_AES_CMAC:
 155         case WLAN_CIPHER_SUITE_GCMP:
 156                 break;
 157         default:
 158                 cs = ieee80211_cs_get(local, params->cipher, sdata->vif.type);
 159                 break;
 160         }
 161
 162         key = ieee80211_key_alloc(params->cipher, key_idx, params->key_len,
 163                                   params->key, params->seq_len, params->seq,
 164                                   cs);
 165         if (IS_ERR(key))
 166                 return PTR_ERR(key);
 167
 168         if (pairwise)
 169                 key->conf.flags |= IEEE80211_KEY_FLAG_PAIRWISE;
 170
 171         mutex_lock(&local->sta_mtx);
 172
 173         if (mac_addr) {
 174                 if (ieee80211_vif_is_mesh(&sdata->vif))
 175                         sta = sta_info_get(sdata, mac_addr);
 176                 else
 177                         sta = sta_info_get_bss(sdata, mac_addr);
 178                 /*
 179                  * The ASSOC test makes sure the driver is ready to
 180                  * receive the key. When wpa_supplicant has roamed
 181                  * using FT, it attempts to set the key before
 182                  * association has completed, this rejects that attempt
 183                  * so it will set the key again after assocation.
 184                  *
 185                  * TODO: accept the key if we have a station entry and
 186                  *       add it to the device after the station.
 187                  */
 188                 if (!sta || !test_sta_flag(sta, WLAN_STA_ASSOC)) {
 189                         ieee80211_key_free_unused(key);
 190                         err = -ENOENT;
 191                         goto out_unlock;
 192                 }
 193         }
 194
 195         switch (sdata->vif.type) {
 196         case NL80211_IFTYPE_STATION:
 197                 if (sdata->u.mgd.mfp != IEEE80211_MFP_DISABLED)
 198                         key->conf.flags |= IEEE80211_KEY_FLAG_RX_MGMT;
 199                 break;
 200         case NL80211_IFTYPE_AP:
 201         case NL80211_IFTYPE_AP_VLAN:
 202                 /* Keys without a station are used for TX only */
 203                 if (key->sta && test_sta_flag(key->sta, WLAN_STA_MFP))
 204                         key->conf.flags |= IEEE80211_KEY_FLAG_RX_MGMT;
 205                 break;
 206         case NL80211_IFTYPE_ADHOC:
 207                 /* no MFP (yet) */
 208                 break;
 209         case NL80211_IFTYPE_MESH_POINT:
 210 #ifdef CONFIG_MAC80211_MESH
 211                 if (sdata->u.mesh.security != IEEE80211_MESH_SEC_NONE)
 212                         key->conf.flags |= IEEE80211_KEY_FLAG_RX_MGMT;
 213                 break;
 214 #endif
 215         case NL80211_IFTYPE_WDS:
 216         case NL80211_IFTYPE_MONITOR:
 217         case NL80211_IFTYPE_P2P_DEVICE:
 218         case NL80211_IFTYPE_UNSPECIFIED:
 219         case NUM_NL80211_IFTYPES:
 220         case NL80211_IFTYPE_P2P_CLIENT:
 221         case NL80211_IFTYPE_P2P_GO:
 222                 /* shouldn't happen */
 223                 WARN_ON_ONCE(1);
 224                 break;
 225         }
 226
 227         if (sta)
 228                 sta->cipher_scheme = cs;
 229
 230         err = ieee80211_key_link(key, sdata, sta);
 231
 232  out_unlock:
 233         mutex_unlock(&local->sta_mtx);
 234
 235         return err;
 236 }
 237
 238 static int ieee80211_del_key(struct wiphy *wiphy, struct net_device *dev,
 239                              u8 key_idx, bool pairwise, const u8 *mac_addr)
 240 {
 241         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 242         struct ieee80211_local *local = sdata->local;
 243         struct sta_info *sta;
 244         struct ieee80211_key *key = NULL;
 245         int ret;
 246
 247         mutex_lock(&local->sta_mtx);
 248         mutex_lock(&local->key_mtx);
 249
 250         if (mac_addr) {
 251                 ret = -ENOENT;
 252
 253                 sta = sta_info_get_bss(sdata, mac_addr);
 254                 if (!sta)
 255                         goto out_unlock;
 256
 257                 if (pairwise)
 258                         key = key_mtx_dereference(local, sta->ptk[key_idx]);
 259                 else
 260                         key = key_mtx_dereference(local, sta->gtk[key_idx]);
 261         } else
 262                 key = key_mtx_dereference(local, sdata->keys[key_idx]);
 263
 264         if (!key) {
 265                 ret = -ENOENT;
 266                 goto out_unlock;
 267         }
 268
 269         ieee80211_key_free(key, true);
 270
 271         ret = 0;
 272  out_unlock:
 273         mutex_unlock(&local->key_mtx);
 274         mutex_unlock(&local->sta_mtx);
 275
 276         return ret;
 277 }
 278
 279 static int ieee80211_get_key(struct wiphy *wiphy, struct net_device *dev,
 280                              u8 key_idx, bool pairwise, const u8 *mac_addr,
 281                              void *cookie,
 282                              void (*callback)(void *cookie,
 283                                               struct key_params *params))
 284 {
 285         struct ieee80211_sub_if_data *sdata;
 286         struct sta_info *sta = NULL;
 287         u8 seq[6] = {0};
 288         struct key_params params;
 289         struct ieee80211_key *key = NULL;
 290         u64 pn64;
 291         u32 iv32;
 292         u16 iv16;
 293         int err = -ENOENT;
 294
 295         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 296
 297         rcu_read_lock();
 298
 299         if (mac_addr) {
 300                 sta = sta_info_get_bss(sdata, mac_addr);
 301                 if (!sta)
 302                         goto out;
 303
 304                 if (pairwise && key_idx < NUM_DEFAULT_KEYS)
 305                         key = rcu_dereference(sta->ptk[key_idx]);
 306                 else if (!pairwise &&
 307                          key_idx < NUM_DEFAULT_KEYS + NUM_DEFAULT_MGMT_KEYS)
 308                         key = rcu_dereference(sta->gtk[key_idx]);
 309         } else
 310                 key = rcu_dereference(sdata->keys[key_idx]);
 311
 312         if (!key)
 313                 goto out;
 314
 315         memset(&params, 0, sizeof(params));
 316
 317         params.cipher = key->conf.cipher;
 318
 319         switch (key->conf.cipher) {
 320         case WLAN_CIPHER_SUITE_TKIP:
 321                 iv32 = key->u.tkip.tx.iv32;
 322                 iv16 = key->u.tkip.tx.iv16;
 323
 324                 if (key->flags & KEY_FLAG_UPLOADED_TO_HARDWARE)
 325                         drv_get_tkip_seq(sdata->local,
 326                                          key->conf.hw_key_idx,
 327                                          &iv32, &iv16);
 328
 329                 seq[0] = iv16 & 0xff;
 330                 seq[1] = (iv16 >> 8) & 0xff;
 331                 seq[2] = iv32 & 0xff;
 332                 seq[3] = (iv32 >> 8) & 0xff;
 333                 seq[4] = (iv32 >> 16) & 0xff;
 334                 seq[5] = (iv32 >> 24) & 0xff;
 335                 params.seq = seq;
 336                 params.seq_len = 6;
 337                 break;
 338         case WLAN_CIPHER_SUITE_CCMP:
 339                 pn64 = atomic64_read(&key->u.ccmp.tx_pn);
 340                 seq[0] = pn64;
 341                 seq[1] = pn64 >> 8;
 342                 seq[2] = pn64 >> 16;
 343                 seq[3] = pn64 >> 24;
 344                 seq[4] = pn64 >> 32;
 345                 seq[5] = pn64 >> 40;
 346                 params.seq = seq;
 347                 params.seq_len = 6;
 348                 break;
 349         case WLAN_CIPHER_SUITE_AES_CMAC:
 350                 pn64 = atomic64_read(&key->u.aes_cmac.tx_pn);
 351                 seq[0] = pn64;
 352                 seq[1] = pn64 >> 8;
 353                 seq[2] = pn64 >> 16;
 354                 seq[3] = pn64 >> 24;
 355                 seq[4] = pn64 >> 32;
 356                 seq[5] = pn64 >> 40;
 357                 params.seq = seq;
 358                 params.seq_len = 6;
 359                 break;
 360         }
 361
 362         params.key = key->conf.key;
 363         params.key_len = key->conf.keylen;
 364
 365         callback(cookie, &params);
 366         err = 0;
 367
 368  out:
 369         rcu_read_unlock();
 370         return err;
 371 }
 372
 373 static int ieee80211_config_default_key(struct wiphy *wiphy,
 374                                         struct net_device *dev,
 375                                         u8 key_idx, bool uni,
 376                                         bool multi)
 377 {
 378         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 379
 380         ieee80211_set_default_key(sdata, key_idx, uni, multi);
 381
 382         return 0;
 383 }
 384
 385 static int ieee80211_config_default_mgmt_key(struct wiphy *wiphy,
 386                                              struct net_device *dev,
 387                                              u8 key_idx)
 388 {
 389         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 390
 391         ieee80211_set_default_mgmt_key(sdata, key_idx);
 392
 393         return 0;
 394 }
 395
 396 void sta_set_rate_info_tx(struct sta_info *sta,
 397                           const struct ieee80211_tx_rate *rate,
 398                           struct rate_info *rinfo)
 399 {
 400         rinfo->flags = 0;
 401         if (rate->flags & IEEE80211_TX_RC_MCS) {
 402                 rinfo->flags |= RATE_INFO_FLAGS_MCS;
 403                 rinfo->mcs = rate->idx;
 404         } else if (rate->flags & IEEE80211_TX_RC_VHT_MCS) {
 405                 rinfo->flags |= RATE_INFO_FLAGS_VHT_MCS;
 406                 rinfo->mcs = ieee80211_rate_get_vht_mcs(rate);
 407                 rinfo->nss = ieee80211_rate_get_vht_nss(rate);
 408         } else {
 409                 struct ieee80211_supported_band *sband;
 410                 int shift = ieee80211_vif_get_shift(&sta->sdata->vif);
 411                 u16 brate;
 412
 413                 sband = sta->local->hw.wiphy->bands[
 414                                 ieee80211_get_sdata_band(sta->sdata)];
 415                 brate = sband->bitrates[rate->idx].bitrate;
 416                 rinfo->legacy = DIV_ROUND_UP(brate, 1 << shift);
 417         }
 418         if (rate->flags & IEEE80211_TX_RC_40_MHZ_WIDTH)
 419                 rinfo->flags |= RATE_INFO_FLAGS_40_MHZ_WIDTH;
 420         if (rate->flags & IEEE80211_TX_RC_80_MHZ_WIDTH)
 421                 rinfo->flags |= RATE_INFO_FLAGS_80_MHZ_WIDTH;
 422         if (rate->flags & IEEE80211_TX_RC_160_MHZ_WIDTH)
 423                 rinfo->flags |= RATE_INFO_FLAGS_160_MHZ_WIDTH;
 424         if (rate->flags & IEEE80211_TX_RC_SHORT_GI)
 425                 rinfo->flags |= RATE_INFO_FLAGS_SHORT_GI;
 426 }
 427
 428 void sta_set_rate_info_rx(struct sta_info *sta, struct rate_info *rinfo)
 429 {
 430         rinfo->flags = 0;
 431
 432         if (sta->last_rx_rate_flag & RX_FLAG_HT) {
 433                 rinfo->flags |= RATE_INFO_FLAGS_MCS;
 434                 rinfo->mcs = sta->last_rx_rate_idx;
 435         } else if (sta->last_rx_rate_flag & RX_FLAG_VHT) {
 436                 rinfo->flags |= RATE_INFO_FLAGS_VHT_MCS;
 437                 rinfo->nss = sta->last_rx_rate_vht_nss;
 438                 rinfo->mcs = sta->last_rx_rate_idx;
 439         } else {
 440                 struct ieee80211_supported_band *sband;
 441                 int shift = ieee80211_vif_get_shift(&sta->sdata->vif);
 442                 u16 brate;
 443
 444                 sband = sta->local->hw.wiphy->bands[
 445                                 ieee80211_get_sdata_band(sta->sdata)];
 446                 brate = sband->bitrates[sta->last_rx_rate_idx].bitrate;
 447                 rinfo->legacy = DIV_ROUND_UP(brate, 1 << shift);
 448         }
 449
 450         if (sta->last_rx_rate_flag & RX_FLAG_40MHZ)
 451                 rinfo->flags |= RATE_INFO_FLAGS_40_MHZ_WIDTH;
 452         if (sta->last_rx_rate_flag & RX_FLAG_SHORT_GI)
 453                 rinfo->flags |= RATE_INFO_FLAGS_SHORT_GI;
 454         if (sta->last_rx_rate_flag & RX_FLAG_80MHZ)
 455                 rinfo->flags |= RATE_INFO_FLAGS_80_MHZ_WIDTH;
 456         if (sta->last_rx_rate_flag & RX_FLAG_80P80MHZ)
 457                 rinfo->flags |= RATE_INFO_FLAGS_80P80_MHZ_WIDTH;
 458         if (sta->last_rx_rate_flag & RX_FLAG_160MHZ)
 459                 rinfo->flags |= RATE_INFO_FLAGS_160_MHZ_WIDTH;
 460 }
 461
 462 static void sta_set_sinfo(struct sta_info *sta, struct station_info *sinfo)
 463 {
 464         struct ieee80211_sub_if_data *sdata = sta->sdata;
 465         struct ieee80211_local *local = sdata->local;
 466         struct timespec uptime;
 467         u64 packets = 0;
 468         int i, ac;
 469
 470         sinfo->generation = sdata->local->sta_generation;
 471
 472         sinfo->filled = STATION_INFO_INACTIVE_TIME |
 473                         STATION_INFO_RX_BYTES64 |
 474                         STATION_INFO_TX_BYTES64 |
 475                         STATION_INFO_RX_PACKETS |
 476                         STATION_INFO_TX_PACKETS |
 477                         STATION_INFO_TX_RETRIES |
 478                         STATION_INFO_TX_FAILED |
 479                         STATION_INFO_TX_BITRATE |
 480                         STATION_INFO_RX_BITRATE |
 481                         STATION_INFO_RX_DROP_MISC |
 482                         STATION_INFO_BSS_PARAM |
 483                         STATION_INFO_CONNECTED_TIME |
 484                         STATION_INFO_STA_FLAGS |
 485                         STATION_INFO_BEACON_LOSS_COUNT;
 486
 487         do_posix_clock_monotonic_gettime(&uptime);
 488         sinfo->connected_time = uptime.tv_sec - sta->last_connected;
 489
 490         sinfo->inactive_time = jiffies_to_msecs(jiffies - sta->last_rx);
 491         sinfo->tx_bytes = 0;
 492         for (ac = 0; ac < IEEE80211_NUM_ACS; ac++) {
 493                 sinfo->tx_bytes += sta->tx_bytes[ac];
 494                 packets += sta->tx_packets[ac];
 495         }
 496         sinfo->tx_packets = packets;
 497         sinfo->rx_bytes = sta->rx_bytes;
 498         sinfo->rx_packets = sta->rx_packets;
 499         sinfo->tx_retries = sta->tx_retry_count;
 500         sinfo->tx_failed = sta->tx_retry_failed;
 501         sinfo->rx_dropped_misc = sta->rx_dropped;
 502         sinfo->beacon_loss_count = sta->beacon_loss_count;
 503
 504         if ((sta->local->hw.flags & IEEE80211_HW_SIGNAL_DBM) ||
 505             (sta->local->hw.flags & IEEE80211_HW_SIGNAL_UNSPEC)) {
 506                 sinfo->filled |= STATION_INFO_SIGNAL | STATION_INFO_SIGNAL_AVG;
 507                 if (!local->ops->get_rssi ||
 508                     drv_get_rssi(local, sdata, &sta->sta, &sinfo->signal))
 509                         sinfo->signal = (s8)sta->last_signal;
 510                 sinfo->signal_avg = (s8) -ewma_read(&sta->avg_signal);
 511         }
 512         if (sta->chains) {
 513                 sinfo->filled |= STATION_INFO_CHAIN_SIGNAL |
 514                                  STATION_INFO_CHAIN_SIGNAL_AVG;
 515
 516                 sinfo->chains = sta->chains;
 517                 for (i = 0; i < ARRAY_SIZE(sinfo->chain_signal); i++) {
 518                         sinfo->chain_signal[i] = sta->chain_signal_last[i];
 519                         sinfo->chain_signal_avg[i] =
 520                                 (s8) -ewma_read(&sta->chain_signal_avg[i]);
 521                 }
 522         }
 523
 524         sta_set_rate_info_tx(sta, &sta->last_tx_rate, &sinfo->txrate);
 525         sta_set_rate_info_rx(sta, &sinfo->rxrate);
 526
 527         if (ieee80211_vif_is_mesh(&sdata->vif)) {
 528 #ifdef CONFIG_MAC80211_MESH
 529                 sinfo->filled |= STATION_INFO_LLID |
 530                                  STATION_INFO_PLID |
 531                                  STATION_INFO_PLINK_STATE |
 532                                  STATION_INFO_LOCAL_PM |
 533                                  STATION_INFO_PEER_PM |
 534                                  STATION_INFO_NONPEER_PM;
 535
 536                 sinfo->llid = sta->llid;
 537                 sinfo->plid = sta->plid;
 538                 sinfo->plink_state = sta->plink_state;
 539                 if (test_sta_flag(sta, WLAN_STA_TOFFSET_KNOWN)) {
 540                         sinfo->filled |= STATION_INFO_T_OFFSET;
 541                         sinfo->t_offset = sta->t_offset;
 542                 }
 543                 sinfo->local_pm = sta->local_pm;
 544                 sinfo->peer_pm = sta->peer_pm;
 545                 sinfo->nonpeer_pm = sta->nonpeer_pm;
 546 #endif
 547         }
 548
 549         sinfo->bss_param.flags = 0;
 550         if (sdata->vif.bss_conf.use_cts_prot)
 551                 sinfo->bss_param.flags |= BSS_PARAM_FLAGS_CTS_PROT;
 552         if (sdata->vif.bss_conf.use_short_preamble)
 553                 sinfo->bss_param.flags |= BSS_PARAM_FLAGS_SHORT_PREAMBLE;
 554         if (sdata->vif.bss_conf.use_short_slot)
 555                 sinfo->bss_param.flags |= BSS_PARAM_FLAGS_SHORT_SLOT_TIME;
 556         sinfo->bss_param.dtim_period = sdata->local->hw.conf.ps_dtim_period;
 557         sinfo->bss_param.beacon_interval = sdata->vif.bss_conf.beacon_int;
 558
 559         sinfo->sta_flags.set = 0;
 560         sinfo->sta_flags.mask = BIT(NL80211_STA_FLAG_AUTHORIZED) |
 561                                 BIT(NL80211_STA_FLAG_SHORT_PREAMBLE) |
 562                                 BIT(NL80211_STA_FLAG_WME) |
 563                                 BIT(NL80211_STA_FLAG_MFP) |
 564                                 BIT(NL80211_STA_FLAG_AUTHENTICATED) |
 565                                 BIT(NL80211_STA_FLAG_ASSOCIATED) |
 566                                 BIT(NL80211_STA_FLAG_TDLS_PEER);
 567         if (test_sta_flag(sta, WLAN_STA_AUTHORIZED))
 568                 sinfo->sta_flags.set |= BIT(NL80211_STA_FLAG_AUTHORIZED);
 569         if (test_sta_flag(sta, WLAN_STA_SHORT_PREAMBLE))
 570                 sinfo->sta_flags.set |= BIT(NL80211_STA_FLAG_SHORT_PREAMBLE);
 571         if (test_sta_flag(sta, WLAN_STA_WME))
 572                 sinfo->sta_flags.set |= BIT(NL80211_STA_FLAG_WME);
 573         if (test_sta_flag(sta, WLAN_STA_MFP))
 574                 sinfo->sta_flags.set |= BIT(NL80211_STA_FLAG_MFP);
 575         if (test_sta_flag(sta, WLAN_STA_AUTH))
 576                 sinfo->sta_flags.set |= BIT(NL80211_STA_FLAG_AUTHENTICATED);
 577         if (test_sta_flag(sta, WLAN_STA_ASSOC))
 578                 sinfo->sta_flags.set |= BIT(NL80211_STA_FLAG_ASSOCIATED);
 579         if (test_sta_flag(sta, WLAN_STA_TDLS_PEER))
 580                 sinfo->sta_flags.set |= BIT(NL80211_STA_FLAG_TDLS_PEER);
 581 }
 582
 583 static const char ieee80211_gstrings_sta_stats[][ETH_GSTRING_LEN] = {
 584         "rx_packets", "rx_bytes", "wep_weak_iv_count",
 585         "rx_duplicates", "rx_fragments", "rx_dropped",
 586         "tx_packets", "tx_bytes", "tx_fragments",
 587         "tx_filtered", "tx_retry_failed", "tx_retries",
 588         "beacon_loss", "sta_state", "txrate", "rxrate", "signal",
 589         "channel", "noise", "ch_time", "ch_time_busy",
 590         "ch_time_ext_busy", "ch_time_rx", "ch_time_tx"
 591 };
 592 #define STA_STATS_LEN   ARRAY_SIZE(ieee80211_gstrings_sta_stats)
 593
 594 static int ieee80211_get_et_sset_count(struct wiphy *wiphy,
 595                                        struct net_device *dev,
 596                                        int sset)
 597 {
 598         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 599         int rv = 0;
 600
 601         if (sset == ETH_SS_STATS)
 602                 rv += STA_STATS_LEN;
 603
 604         rv += drv_get_et_sset_count(sdata, sset);
 605
 606         if (rv == 0)
 607                 return -EOPNOTSUPP;
 608         return rv;
 609 }
 610
 611 static void ieee80211_get_et_stats(struct wiphy *wiphy,
 612                                    struct net_device *dev,
 613                                    struct ethtool_stats *stats,
 614                                    u64 *data)
 615 {
 616         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 617         struct ieee80211_chanctx_conf *chanctx_conf;
 618         struct ieee80211_channel *channel;
 619         struct sta_info *sta;
 620         struct ieee80211_local *local = sdata->local;
 621         struct station_info sinfo;
 622         struct survey_info survey;
 623         int i, q;
 624 #define STA_STATS_SURVEY_LEN 7
 625
 626         memset(data, 0, sizeof(u64) * STA_STATS_LEN);
 627
 628 #define ADD_STA_STATS(sta)                              \
 629         do {                                            \
 630                 data[i++] += sta->rx_packets;           \
 631                 data[i++] += sta->rx_bytes;             \
 632                 data[i++] += sta->wep_weak_iv_count;    \
 633                 data[i++] += sta->num_duplicates;       \
 634                 data[i++] += sta->rx_fragments;         \
 635                 data[i++] += sta->rx_dropped;           \
 636                                                         \
 637                 data[i++] += sinfo.tx_packets;          \
 638                 data[i++] += sinfo.tx_bytes;            \
 639                 data[i++] += sta->tx_fragments;         \
 640                 data[i++] += sta->tx_filtered_count;    \
 641                 data[i++] += sta->tx_retry_failed;      \
 642                 data[i++] += sta->tx_retry_count;       \
 643                 data[i++] += sta->beacon_loss_count;    \
 644         } while (0)
 645
 646         /* For Managed stations, find the single station based on BSSID
 647          * and use that.  For interface types, iterate through all available
 648          * stations and add stats for any station that is assigned to this
 649          * network device.
 650          */
 651
 652         mutex_lock(&local->sta_mtx);
 653
 654         if (sdata->vif.type == NL80211_IFTYPE_STATION) {
 655                 sta = sta_info_get_bss(sdata, sdata->u.mgd.bssid);
 656
 657                 if (!(sta && !WARN_ON(sta->sdata->dev != dev)))
 658                         goto do_survey;
 659
 660                 sinfo.filled = 0;
 661                 sta_set_sinfo(sta, &sinfo);
 662
 663                 i = 0;
 664                 ADD_STA_STATS(sta);
 665
 666                 data[i++] = sta->sta_state;
 667
 668
 669                 if (sinfo.filled & STATION_INFO_TX_BITRATE)
 670                         data[i] = 100000 *
 671                                 cfg80211_calculate_bitrate(&sinfo.txrate);
 672                 i++;
 673                 if (sinfo.filled & STATION_INFO_RX_BITRATE)
 674                         data[i] = 100000 *
 675                                 cfg80211_calculate_bitrate(&sinfo.rxrate);
 676                 i++;
 677
 678                 if (sinfo.filled & STATION_INFO_SIGNAL_AVG)
 679                         data[i] = (u8)sinfo.signal_avg;
 680                 i++;
 681         } else {
 682                 list_for_each_entry(sta, &local->sta_list, list) {
 683                         /* Make sure this station belongs to the proper dev */
 684                         if (sta->sdata->dev != dev)
 685                                 continue;
 686
 687                         sinfo.filled = 0;
 688                         sta_set_sinfo(sta, &sinfo);
 689                         i = 0;
 690                         ADD_STA_STATS(sta);
 691                 }
 692         }
 693
 694 do_survey:
 695         i = STA_STATS_LEN - STA_STATS_SURVEY_LEN;
 696         /* Get survey stats for current channel */
 697         survey.filled = 0;
 698
 699         rcu_read_lock();
 700         chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf);
 701         if (chanctx_conf)
 702                 channel = chanctx_conf->def.chan;
 703         else
 704                 channel = NULL;
 705         rcu_read_unlock();
 706
 707         if (channel) {
 708                 q = 0;
 709                 do {
 710                         survey.filled = 0;
 711                         if (drv_get_survey(local, q, &survey) != 0) {
 712                                 survey.filled = 0;
 713                                 break;
 714                         }
 715                         q++;
 716                 } while (channel != survey.channel);
 717         }
 718
 719         if (survey.filled)
 720                 data[i++] = survey.channel->center_freq;
 721         else
 722                 data[i++] = 0;
 723         if (survey.filled & SURVEY_INFO_NOISE_DBM)
 724                 data[i++] = (u8)survey.noise;
 725         else
 726                 data[i++] = -1LL;
 727         if (survey.filled & SURVEY_INFO_CHANNEL_TIME)
 728                 data[i++] = survey.channel_time;
 729         else
 730                 data[i++] = -1LL;
 731         if (survey.filled & SURVEY_INFO_CHANNEL_TIME_BUSY)
 732                 data[i++] = survey.channel_time_busy;
 733         else
 734                 data[i++] = -1LL;
 735         if (survey.filled & SURVEY_INFO_CHANNEL_TIME_EXT_BUSY)
 736                 data[i++] = survey.channel_time_ext_busy;
 737         else
 738                 data[i++] = -1LL;
 739         if (survey.filled & SURVEY_INFO_CHANNEL_TIME_RX)
 740                 data[i++] = survey.channel_time_rx;
 741         else
 742                 data[i++] = -1LL;
 743         if (survey.filled & SURVEY_INFO_CHANNEL_TIME_TX)
 744                 data[i++] = survey.channel_time_tx;
 745         else
 746                 data[i++] = -1LL;
 747
 748         mutex_unlock(&local->sta_mtx);
 749
 750         if (WARN_ON(i != STA_STATS_LEN))
 751                 return;
 752
 753         drv_get_et_stats(sdata, stats, &(data[STA_STATS_LEN]));
 754 }
 755
 756 static void ieee80211_get_et_strings(struct wiphy *wiphy,
 757                                      struct net_device *dev,
 758                                      u32 sset, u8 *data)
 759 {
 760         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 761         int sz_sta_stats = 0;
 762
 763         if (sset == ETH_SS_STATS) {
 764                 sz_sta_stats = sizeof(ieee80211_gstrings_sta_stats);
 765                 memcpy(data, ieee80211_gstrings_sta_stats, sz_sta_stats);
 766         }
 767         drv_get_et_strings(sdata, sset, &(data[sz_sta_stats]));
 768 }
 769
 770 static int ieee80211_dump_station(struct wiphy *wiphy, struct net_device *dev,
 771                                  int idx, u8 *mac, struct station_info *sinfo)
 772 {
 773         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 774         struct ieee80211_local *local = sdata->local;
 775         struct sta_info *sta;
 776         int ret = -ENOENT;
 777
 778         mutex_lock(&local->sta_mtx);
 779
 780         sta = sta_info_get_by_idx(sdata, idx);
 781         if (sta) {
 782                 ret = 0;
 783                 memcpy(mac, sta->sta.addr, ETH_ALEN);
 784                 sta_set_sinfo(sta, sinfo);
 785         }
 786
 787         mutex_unlock(&local->sta_mtx);
 788
 789         return ret;
 790 }
 791
 792 static int ieee80211_dump_survey(struct wiphy *wiphy, struct net_device *dev,
 793                                  int idx, struct survey_info *survey)
 794 {
 795         struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
 796
 797         return drv_get_survey(local, idx, survey);
 798 }
 799
 800 static int ieee80211_get_station(struct wiphy *wiphy, struct net_device *dev,
 801                                  u8 *mac, struct station_info *sinfo)
 802 {
 803         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 804         struct ieee80211_local *local = sdata->local;
 805         struct sta_info *sta;
 806         int ret = -ENOENT;
 807
 808         mutex_lock(&local->sta_mtx);
 809
 810         sta = sta_info_get_bss(sdata, mac);
 811         if (sta) {
 812                 ret = 0;
 813                 sta_set_sinfo(sta, sinfo);
 814         }
 815
 816         mutex_unlock(&local->sta_mtx);
 817
 818         return ret;
 819 }
 820
 821 static int ieee80211_set_monitor_channel(struct wiphy *wiphy,
 822                                          struct cfg80211_chan_def *chandef)
 823 {
 824         struct ieee80211_local *local = wiphy_priv(wiphy);
 825         struct ieee80211_sub_if_data *sdata;
 826         int ret = 0;
 827
 828         if (cfg80211_chandef_identical(&local->monitor_chandef, chandef))
 829                 return 0;
 830
 831         mutex_lock(&local->mtx);
 832         mutex_lock(&local->iflist_mtx);
 833         if (local->use_chanctx) {
 834                 sdata = rcu_dereference_protected(
 835                                 local->monitor_sdata,
 836                                 lockdep_is_held(&local->iflist_mtx));
 837                 if (sdata) {
 838                         ieee80211_vif_release_channel(sdata);
 839                         ret = ieee80211_vif_use_channel(sdata, chandef,
 840                                         IEEE80211_CHANCTX_EXCLUSIVE);
 841                 }
 842         } else if (local->open_count == local->monitors) {
 843                 local->_oper_chandef = *chandef;
 844                 ieee80211_hw_config(local, 0);
 845         }
 846
 847         if (ret == 0)
 848                 local->monitor_chandef = *chandef;
 849         mutex_unlock(&local->iflist_mtx);
 850         mutex_unlock(&local->mtx);
 851
 852         return ret;
 853 }
 854
 855 static int ieee80211_set_probe_resp(struct ieee80211_sub_if_data *sdata,
 856                                     const u8 *resp, size_t resp_len)
 857 {
 858         struct probe_resp *new, *old;
 859
 860         if (!resp || !resp_len)
 861                 return 1;
 862
 863         old = sdata_dereference(sdata->u.ap.probe_resp, sdata);
 864
 865         new = kzalloc(sizeof(struct probe_resp) + resp_len, GFP_KERNEL);
 866         if (!new)
 867                 return -ENOMEM;
 868
 869         new->len = resp_len;
 870         memcpy(new->data, resp, resp_len);
 871
 872         rcu_assign_pointer(sdata->u.ap.probe_resp, new);
 873         if (old)
 874                 kfree_rcu(old, rcu_head);
 875
 876         return 0;
 877 }
 878
 879 static int ieee80211_assign_beacon(struct ieee80211_sub_if_data *sdata,
 880                                    struct cfg80211_beacon_data *params)
 881 {
 882         struct beacon_data *new, *old;
 883         int new_head_len, new_tail_len;
 884         int size, err;
 885         u32 changed = BSS_CHANGED_BEACON;
 886
 887         old = sdata_dereference(sdata->u.ap.beacon, sdata);
 888
 889
 890         /* Need to have a beacon head if we don't have one yet */
 891         if (!params->head && !old)
 892                 return -EINVAL;
 893
 894         /* new or old head? */
 895         if (params->head)
 896                 new_head_len = params->head_len;
 897         else
 898                 new_head_len = old->head_len;
 899
 900         /* new or old tail? */
 901         if (params->tail || !old)
 902                 /* params->tail_len will be zero for !params->tail */
 903                 new_tail_len = params->tail_len;
 904         else
 905                 new_tail_len = old->tail_len;
 906
 907         size = sizeof(*new) + new_head_len + new_tail_len;
 908
 909         new = kzalloc(size, GFP_KERNEL);
 910         if (!new)
 911                 return -ENOMEM;
 912
 913         /* start filling the new info now */
 914
 915         /*
 916          * pointers go into the block we allocated,
 917          * memory is | beacon_data | head | tail |
 918          */
 919         new->head = ((u8 *) new) + sizeof(*new);
 920         new->tail = new->head + new_head_len;
 921         new->head_len = new_head_len;
 922         new->tail_len = new_tail_len;
 923
 924         /* copy in head */
 925         if (params->head)
 926                 memcpy(new->head, params->head, new_head_len);
 927         else
 928                 memcpy(new->head, old->head, new_head_len);
 929
 930         /* copy in optional tail */
 931         if (params->tail)
 932                 memcpy(new->tail, params->tail, new_tail_len);
 933         else
 934                 if (old)
 935                         memcpy(new->tail, old->tail, new_tail_len);
 936
 937         err = ieee80211_set_probe_resp(sdata, params->probe_resp,
 938                                        params->probe_resp_len);
 939         if (err < 0)
 940                 return err;
 941         if (err == 0)
 942                 changed |= BSS_CHANGED_AP_PROBE_RESP;
 943
 944         rcu_assign_pointer(sdata->u.ap.beacon, new);
 945
 946         if (old)
 947                 kfree_rcu(old, rcu_head);
 948
 949         return changed;
 950 }
 951
 952 static int ieee80211_start_ap(struct wiphy *wiphy, struct net_device *dev,
 953                               struct cfg80211_ap_settings *params)
 954 {
 955         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 956         struct ieee80211_local *local = sdata->local;
 957         struct beacon_data *old;
 958         struct ieee80211_sub_if_data *vlan;
 959         u32 changed = BSS_CHANGED_BEACON_INT |
 960                       BSS_CHANGED_BEACON_ENABLED |
 961                       BSS_CHANGED_BEACON |
 962                       BSS_CHANGED_SSID |
 963                       BSS_CHANGED_P2P_PS;
 964         int err;
 965
 966         old = sdata_dereference(sdata->u.ap.beacon, sdata);
 967         if (old)
 968                 return -EALREADY;
 969
 970         /* TODO: make hostapd tell us what it wants */
 971         sdata->smps_mode = IEEE80211_SMPS_OFF;
 972         sdata->needed_rx_chains = sdata->local->rx_chains;
 973         sdata->radar_required = params->radar_required;
 974
 975         mutex_lock(&local->mtx);
 976         err = ieee80211_vif_use_channel(sdata, &params->chandef,
 977                                         IEEE80211_CHANCTX_SHARED);
 978         mutex_unlock(&local->mtx);
 979         if (err)
 980                 return err;
 981         ieee80211_vif_copy_chanctx_to_vlans(sdata, false);
 982
 983         /*
 984          * Apply control port protocol, this allows us to
 985          * not encrypt dynamic WEP control frames.
 986          */
 987         sdata->control_port_protocol = params->crypto.control_port_ethertype;
 988         sdata->control_port_no_encrypt = params->crypto.control_port_no_encrypt;
 989         sdata->encrypt_headroom = ieee80211_cs_headroom(sdata->local,
 990                                                         &params->crypto,
 991                                                         sdata->vif.type);
 992
 993         list_for_each_entry(vlan, &sdata->u.ap.vlans, u.vlan.list) {
 994                 vlan->control_port_protocol =
 995                         params->crypto.control_port_ethertype;
 996                 vlan->control_port_no_encrypt =
 997                         params->crypto.control_port_no_encrypt;
 998                 vlan->encrypt_headroom =
 999                         ieee80211_cs_headroom(sdata->local,
1000                                               &params->crypto,
1001                                               vlan->vif.type);
1002         }
1003
1004         sdata->vif.bss_conf.beacon_int = params->beacon_interval;
1005         sdata->vif.bss_conf.dtim_period = params->dtim_period;
1006         sdata->vif.bss_conf.enable_beacon = true;
1007
1008         sdata->vif.bss_conf.ssid_len = params->ssid_len;
1009         if (params->ssid_len)
1010                 memcpy(sdata->vif.bss_conf.ssid, params->ssid,
1011                        params->ssid_len);
1012         sdata->vif.bss_conf.hidden_ssid =
1013                 (params->hidden_ssid != NL80211_HIDDEN_SSID_NOT_IN_USE);
1014
1015         memset(&sdata->vif.bss_conf.p2p_noa_attr, 0,
1016                sizeof(sdata->vif.bss_conf.p2p_noa_attr));
1017         sdata->vif.bss_conf.p2p_noa_attr.oppps_ctwindow =
1018                 params->p2p_ctwindow & IEEE80211_P2P_OPPPS_CTWINDOW_MASK;
1019         if (params->p2p_opp_ps)
1020                 sdata->vif.bss_conf.p2p_noa_attr.oppps_ctwindow |=
1021                                         IEEE80211_P2P_OPPPS_ENABLE_BIT;
1022
1023         err = ieee80211_assign_beacon(sdata, &params->beacon);
1024         if (err < 0) {
1025                 ieee80211_vif_release_channel(sdata);
1026                 return err;
1027         }
1028         changed |= err;
1029
1030         err = drv_start_ap(sdata->local, sdata);
1031         if (err) {
1032                 old = sdata_dereference(sdata->u.ap.beacon, sdata);
1033
1034                 if (old)
1035                         kfree_rcu(old, rcu_head);
1036                 RCU_INIT_POINTER(sdata->u.ap.beacon, NULL);
1037                 ieee80211_vif_release_channel(sdata);
1038                 return err;
1039         }
1040
1041         ieee80211_recalc_dtim(local, sdata);
1042         ieee80211_bss_info_change_notify(sdata, changed);
1043
1044         netif_carrier_on(dev);
1045         list_for_each_entry(vlan, &sdata->u.ap.vlans, u.vlan.list)
1046                 netif_carrier_on(vlan->dev);
1047
1048         return 0;
1049 }
1050
1051 static int ieee80211_change_beacon(struct wiphy *wiphy, struct net_device *dev,
1052                                    struct cfg80211_beacon_data *params)
1053 {
1054         struct ieee80211_sub_if_data *sdata;
1055         struct beacon_data *old;
1056         int err;
1057
1058         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1059
1060         /* don't allow changing the beacon while CSA is in place - offset
1061          * of channel switch counter may change
1062          */
1063         if (sdata->vif.csa_active)
1064                 return -EBUSY;
1065
1066         old = sdata_dereference(sdata->u.ap.beacon, sdata);
1067         if (!old)
1068                 return -ENOENT;
1069
1070         err = ieee80211_assign_beacon(sdata, params);
1071         if (err < 0)
1072                 return err;
1073         ieee80211_bss_info_change_notify(sdata, err);
1074         return 0;
1075 }
1076
1077 static int ieee80211_stop_ap(struct wiphy *wiphy, struct net_device *dev)
1078 {
1079         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1080         struct ieee80211_sub_if_data *vlan;
1081         struct ieee80211_local *local = sdata->local;
1082         struct beacon_data *old_beacon;
1083         struct probe_resp *old_probe_resp;
1084         struct cfg80211_chan_def chandef;
1085
1086         old_beacon = sdata_dereference(sdata->u.ap.beacon, sdata);
1087         if (!old_beacon)
1088                 return -ENOENT;
1089         old_probe_resp = sdata_dereference(sdata->u.ap.probe_resp, sdata);
1090
1091         /* abort any running channel switch */
1092         sdata->vif.csa_active = false;
1093         kfree(sdata->u.ap.next_beacon);
1094         sdata->u.ap.next_beacon = NULL;
1095
1096         /* turn off carrier for this interface and dependent VLANs */
1097         list_for_each_entry(vlan, &sdata->u.ap.vlans, u.vlan.list)
1098                 netif_carrier_off(vlan->dev);
1099         netif_carrier_off(dev);
1100
1101         /* remove beacon and probe response */
1102         RCU_INIT_POINTER(sdata->u.ap.beacon, NULL);
1103         RCU_INIT_POINTER(sdata->u.ap.probe_resp, NULL);
1104         kfree_rcu(old_beacon, rcu_head);
1105         if (old_probe_resp)
1106                 kfree_rcu(old_probe_resp, rcu_head);
1107         sdata->u.ap.driver_smps_mode = IEEE80211_SMPS_OFF;
1108
1109         __sta_info_flush(sdata, true);
1110         ieee80211_free_keys(sdata, true);
1111
1112         sdata->vif.bss_conf.enable_beacon = false;
1113         sdata->vif.bss_conf.ssid_len = 0;
1114         clear_bit(SDATA_STATE_OFFCHANNEL_BEACON_STOPPED, &sdata->state);
1115         ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_BEACON_ENABLED);
1116
1117         if (sdata->wdev.cac_started) {
1118                 chandef = sdata->vif.bss_conf.chandef;
1119                 cancel_delayed_work_sync(&sdata->dfs_cac_timer_work);
1120                 cfg80211_cac_event(sdata->dev, &chandef,
1121                                    NL80211_RADAR_CAC_ABORTED,
1122                                    GFP_KERNEL);
1123         }
1124
1125         drv_stop_ap(sdata->local, sdata);
1126
1127         /* free all potentially still buffered bcast frames */
1128         local->total_ps_buffered -= skb_queue_len(&sdata->u.ap.ps.bc_buf);
1129         skb_queue_purge(&sdata->u.ap.ps.bc_buf);
1130
1131         ieee80211_vif_copy_chanctx_to_vlans(sdata, true);
1132         mutex_lock(&local->mtx);
1133         ieee80211_vif_release_channel(sdata);
1134         mutex_unlock(&local->mtx);
1135
1136         return 0;
1137 }
1138
1139 /* Layer 2 Update frame (802.2 Type 1 LLC XID Update response) */
1140 struct iapp_layer2_update {
1141         u8 da[ETH_ALEN];        /* broadcast */
1142         u8 sa[ETH_ALEN];        /* STA addr */
1143         __be16 len;             /* 6 */
1144         u8 dsap;                /* 0 */
1145         u8 ssap;                /* 0 */
1146         u8 control;
1147         u8 xid_info[3];
1148 } __packed;
1149
1150 static void ieee80211_send_layer2_update(struct sta_info *sta)
1151 {
1152         struct iapp_layer2_update *msg;
1153         struct sk_buff *skb;
1154
1155         /* Send Level 2 Update Frame to update forwarding tables in layer 2
1156          * bridge devices */
1157
1158         skb = dev_alloc_skb(sizeof(*msg));
1159         if (!skb)
1160                 return;
1161         msg = (struct iapp_layer2_update *)skb_put(skb, sizeof(*msg));
1162
1163         /* 802.2 Type 1 Logical Link Control (LLC) Exchange Identifier (XID)
1164          * Update response frame; IEEE Std 802.2-1998, 5.4.1.2.1 */
1165
1166         eth_broadcast_addr(msg->da);
1167         memcpy(msg->sa, sta->sta.addr, ETH_ALEN);
1168         msg->len = htons(6);
1169         msg->dsap = 0;
1170         msg->ssap = 0x01;       /* NULL LSAP, CR Bit: Response */
1171         msg->control = 0xaf;    /* XID response lsb.1111F101.
1172                                  * F=0 (no poll command; unsolicited frame) */
1173         msg->xid_info[0] = 0x81;        /* XID format identifier */
1174         msg->xid_info[1] = 1;   /* LLC types/classes: Type 1 LLC */
1175         msg->xid_info[2] = 0;   /* XID sender's receive window size (RW) */
1176
1177         skb->dev = sta->sdata->dev;
1178         skb->protocol = eth_type_trans(skb, sta->sdata->dev);
1179         memset(skb->cb, 0, sizeof(skb->cb));
1180         netif_rx_ni(skb);
1181 }
1182
1183 static int sta_apply_auth_flags(struct ieee80211_local *local,
1184                                 struct sta_info *sta,
1185                                 u32 mask, u32 set)
1186 {
1187         int ret;
1188
1189         if (mask & BIT(NL80211_STA_FLAG_AUTHENTICATED) &&
1190             set & BIT(NL80211_STA_FLAG_AUTHENTICATED) &&
1191             !test_sta_flag(sta, WLAN_STA_AUTH)) {
1192                 ret = sta_info_move_state(sta, IEEE80211_STA_AUTH);
1193                 if (ret)
1194                         return ret;
1195         }
1196
1197         if (mask & BIT(NL80211_STA_FLAG_ASSOCIATED) &&
1198             set & BIT(NL80211_STA_FLAG_ASSOCIATED) &&
1199             !test_sta_flag(sta, WLAN_STA_ASSOC)) {
1200                 ret = sta_info_move_state(sta, IEEE80211_STA_ASSOC);
1201                 if (ret)
1202                         return ret;
1203         }
1204
1205         if (mask & BIT(NL80211_STA_FLAG_AUTHORIZED)) {
1206                 if (set & BIT(NL80211_STA_FLAG_AUTHORIZED))
1207                         ret = sta_info_move_state(sta, IEEE80211_STA_AUTHORIZED);
1208                 else if (test_sta_flag(sta, WLAN_STA_AUTHORIZED))
1209                         ret = sta_info_move_state(sta, IEEE80211_STA_ASSOC);
1210                 else
1211                         ret = 0;
1212                 if (ret)
1213                         return ret;
1214         }
1215
1216         if (mask & BIT(NL80211_STA_FLAG_ASSOCIATED) &&
1217             !(set & BIT(NL80211_STA_FLAG_ASSOCIATED)) &&
1218             test_sta_flag(sta, WLAN_STA_ASSOC)) {
1219                 ret = sta_info_move_state(sta, IEEE80211_STA_AUTH);
1220                 if (ret)
1221                         return ret;
1222         }
1223
1224         if (mask & BIT(NL80211_STA_FLAG_AUTHENTICATED) &&
1225             !(set & BIT(NL80211_STA_FLAG_AUTHENTICATED)) &&
1226             test_sta_flag(sta, WLAN_STA_AUTH)) {
1227                 ret = sta_info_move_state(sta, IEEE80211_STA_NONE);
1228                 if (ret)
1229                         return ret;
1230         }
1231
1232         return 0;
1233 }
1234
1235 static int sta_apply_parameters(struct ieee80211_local *local,
1236                                 struct sta_info *sta,
1237                                 struct station_parameters *params)
1238 {
1239         int ret = 0;
1240         struct ieee80211_supported_band *sband;
1241         struct ieee80211_sub_if_data *sdata = sta->sdata;
1242         enum ieee80211_band band = ieee80211_get_sdata_band(sdata);
1243         u32 mask, set;
1244
1245         sband = local->hw.wiphy->bands[band];
1246
1247         mask = params->sta_flags_mask;
1248         set = params->sta_flags_set;
1249
1250         if (ieee80211_vif_is_mesh(&sdata->vif)) {
1251                 /*
1252                  * In mesh mode, ASSOCIATED isn't part of the nl80211
1253                  * API but must follow AUTHENTICATED for driver state.
1254                  */
1255                 if (mask & BIT(NL80211_STA_FLAG_AUTHENTICATED))
1256                         mask |= BIT(NL80211_STA_FLAG_ASSOCIATED);
1257                 if (set & BIT(NL80211_STA_FLAG_AUTHENTICATED))
1258                         set |= BIT(NL80211_STA_FLAG_ASSOCIATED);
1259         } else if (test_sta_flag(sta, WLAN_STA_TDLS_PEER)) {
1260                 /*
1261                  * TDLS -- everything follows authorized, but
1262                  * only becoming authorized is possible, not
1263                  * going back
1264                  */
1265                 if (set & BIT(NL80211_STA_FLAG_AUTHORIZED)) {
1266                         set |= BIT(NL80211_STA_FLAG_AUTHENTICATED) |
1267                                BIT(NL80211_STA_FLAG_ASSOCIATED);
1268                         mask |= BIT(NL80211_STA_FLAG_AUTHENTICATED) |
1269                                 BIT(NL80211_STA_FLAG_ASSOCIATED);
1270                 }
1271         }
1272
1273         ret = sta_apply_auth_flags(local, sta, mask, set);
1274         if (ret)
1275                 return ret;
1276
1277         if (mask & BIT(NL80211_STA_FLAG_SHORT_PREAMBLE)) {
1278                 if (set & BIT(NL80211_STA_FLAG_SHORT_PREAMBLE))
1279                         set_sta_flag(sta, WLAN_STA_SHORT_PREAMBLE);
1280                 else
1281                         clear_sta_flag(sta, WLAN_STA_SHORT_PREAMBLE);
1282         }
1283
1284         if (mask & BIT(NL80211_STA_FLAG_WME)) {
1285                 if (set & BIT(NL80211_STA_FLAG_WME)) {
1286                         set_sta_flag(sta, WLAN_STA_WME);
1287                         sta->sta.wme = true;
1288                 } else {
1289                         clear_sta_flag(sta, WLAN_STA_WME);
1290                         sta->sta.wme = false;
1291                 }
1292         }
1293
1294         if (mask & BIT(NL80211_STA_FLAG_MFP)) {
1295                 if (set & BIT(NL80211_STA_FLAG_MFP))
1296                         set_sta_flag(sta, WLAN_STA_MFP);
1297                 else
1298                         clear_sta_flag(sta, WLAN_STA_MFP);
1299         }
1300
1301         if (mask & BIT(NL80211_STA_FLAG_TDLS_PEER)) {
1302                 if (set & BIT(NL80211_STA_FLAG_TDLS_PEER))
1303                         set_sta_flag(sta, WLAN_STA_TDLS_PEER);
1304                 else
1305                         clear_sta_flag(sta, WLAN_STA_TDLS_PEER);
1306         }
1307
1308         if (params->sta_modify_mask & STATION_PARAM_APPLY_UAPSD) {
1309                 sta->sta.uapsd_queues = params->uapsd_queues;
1310                 sta->sta.max_sp = params->max_sp;
1311         }
1312
1313         /*
1314          * cfg80211 validates this (1-2007) and allows setting the AID
1315          * only when creating a new station entry
1316          */
1317         if (params->aid)
1318                 sta->sta.aid = params->aid;
1319
1320         /*
1321          * Some of the following updates would be racy if called on an
1322          * existing station, via ieee80211_change_station(). However,
1323          * all such changes are rejected by cfg80211 except for updates
1324          * changing the supported rates on an existing but not yet used
1325          * TDLS peer.
1326          */
1327
1328         if (params->listen_interval >= 0)
1329                 sta->listen_interval = params->listen_interval;
1330
1331         if (params->supported_rates) {
1332                 ieee80211_parse_bitrates(&sdata->vif.bss_conf.chandef,
1333                                          sband, params->supported_rates,
1334                                          params->supported_rates_len,
1335                                          &sta->sta.supp_rates[band]);
1336         }
1337
1338         if (params->ht_capa)
1339                 ieee80211_ht_cap_ie_to_sta_ht_cap(sdata, sband,
1340                                                   params->ht_capa, sta);
1341
1342         if (params->vht_capa)
1343                 ieee80211_vht_cap_ie_to_sta_vht_cap(sdata, sband,
1344                                                     params->vht_capa, sta);
1345
1346         if (ieee80211_vif_is_mesh(&sdata->vif)) {
1347 #ifdef CONFIG_MAC80211_MESH
1348                 u32 changed = 0;
1349
1350                 if (params->sta_modify_mask & STATION_PARAM_APPLY_PLINK_STATE) {
1351                         switch (params->plink_state) {
1352                         case NL80211_PLINK_ESTAB:
1353                                 if (sta->plink_state != NL80211_PLINK_ESTAB)
1354                                         changed = mesh_plink_inc_estab_count(
1355                                                         sdata);
1356                                 sta->plink_state = params->plink_state;
1357
1358                                 ieee80211_mps_sta_status_update(sta);
1359                                 changed |= ieee80211_mps_set_sta_local_pm(sta,
1360                                               sdata->u.mesh.mshcfg.power_mode);
1361                                 break;
1362                         case NL80211_PLINK_LISTEN:
1363                         case NL80211_PLINK_BLOCKED:
1364                         case NL80211_PLINK_OPN_SNT:
1365                         case NL80211_PLINK_OPN_RCVD:
1366                         case NL80211_PLINK_CNF_RCVD:
1367                         case NL80211_PLINK_HOLDING:
1368                                 if (sta->plink_state == NL80211_PLINK_ESTAB)
1369                                         changed = mesh_plink_dec_estab_count(
1370                                                         sdata);
1371                                 sta->plink_state = params->plink_state;
1372
1373                                 ieee80211_mps_sta_status_update(sta);
1374                                 changed |= ieee80211_mps_set_sta_local_pm(sta,
1375                                                 NL80211_MESH_POWER_UNKNOWN);
1376                                 break;
1377                         default:
1378                                 /*  nothing  */
1379                                 break;
1380                         }
1381                 }
1382
1383                 switch (params->plink_action) {
1384                 case NL80211_PLINK_ACTION_NO_ACTION:
1385                         /* nothing */
1386                         break;
1387                 case NL80211_PLINK_ACTION_OPEN:
1388                         changed |= mesh_plink_open(sta);
1389                         break;
1390                 case NL80211_PLINK_ACTION_BLOCK:
1391                         changed |= mesh_plink_block(sta);
1392                         break;
1393                 }
1394
1395                 if (params->local_pm)
1396                         changed |=
1397                               ieee80211_mps_set_sta_local_pm(sta,
1398                                                              params->local_pm);
1399                 ieee80211_mbss_info_change_notify(sdata, changed);
1400 #endif
1401         }
1402
1403         return 0;
1404 }
1405
1406 static int ieee80211_add_station(struct wiphy *wiphy, struct net_device *dev,
1407                                  u8 *mac, struct station_parameters *params)
1408 {
1409         struct ieee80211_local *local = wiphy_priv(wiphy);
1410         struct sta_info *sta;
1411         struct ieee80211_sub_if_data *sdata;
1412         int err;
1413         int layer2_update;
1414
1415         if (params->vlan) {
1416                 sdata = IEEE80211_DEV_TO_SUB_IF(params->vlan);
1417
1418                 if (sdata->vif.type != NL80211_IFTYPE_AP_VLAN &&
1419                     sdata->vif.type != NL80211_IFTYPE_AP)
1420                         return -EINVAL;
1421         } else
1422                 sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1423
1424         if (ether_addr_equal(mac, sdata->vif.addr))
1425                 return -EINVAL;
1426
1427         if (is_multicast_ether_addr(mac))
1428                 return -EINVAL;
1429
1430         sta = sta_info_alloc(sdata, mac, GFP_KERNEL);
1431         if (!sta)
1432                 return -ENOMEM;
1433
1434         /*
1435          * defaults -- if userspace wants something else we'll
1436          * change it accordingly in sta_apply_parameters()
1437          */
1438         if (!(params->sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER))) {
1439                 sta_info_pre_move_state(sta, IEEE80211_STA_AUTH);
1440                 sta_info_pre_move_state(sta, IEEE80211_STA_ASSOC);
1441         }
1442
1443         err = sta_apply_parameters(local, sta, params);
1444         if (err) {
1445                 sta_info_free(local, sta);
1446                 return err;
1447         }
1448
1449         /*
1450          * for TDLS, rate control should be initialized only when
1451          * rates are known and station is marked authorized
1452          */
1453         if (!test_sta_flag(sta, WLAN_STA_TDLS_PEER))
1454                 rate_control_rate_init(sta);
1455
1456         layer2_update = sdata->vif.type == NL80211_IFTYPE_AP_VLAN ||
1457                 sdata->vif.type == NL80211_IFTYPE_AP;
1458
1459         err = sta_info_insert_rcu(sta);
1460         if (err) {
1461                 rcu_read_unlock();
1462                 return err;
1463         }
1464
1465         if (layer2_update)
1466                 ieee80211_send_layer2_update(sta);
1467
1468         rcu_read_unlock();
1469
1470         return 0;
1471 }
1472
1473 static int ieee80211_del_station(struct wiphy *wiphy, struct net_device *dev,
1474                                  u8 *mac)
1475 {
1476         struct ieee80211_sub_if_data *sdata;
1477
1478         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1479
1480         if (mac)
1481                 return sta_info_destroy_addr_bss(sdata, mac);
1482
1483         sta_info_flush(sdata);
1484         return 0;
1485 }
1486
1487 static int ieee80211_change_station(struct wiphy *wiphy,
1488                                     struct net_device *dev, u8 *mac,
1489                                     struct station_parameters *params)
1490 {
1491         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1492         struct ieee80211_local *local = wiphy_priv(wiphy);
1493         struct sta_info *sta;
1494         struct ieee80211_sub_if_data *vlansdata;
1495         enum cfg80211_station_type statype;
1496         int err;
1497
1498         mutex_lock(&local->sta_mtx);
1499
1500         sta = sta_info_get_bss(sdata, mac);
1501         if (!sta) {
1502                 err = -ENOENT;
1503                 goto out_err;
1504         }
1505
1506         switch (sdata->vif.type) {
1507         case NL80211_IFTYPE_MESH_POINT:
1508                 if (sdata->u.mesh.user_mpm)
1509                         statype = CFG80211_STA_MESH_PEER_USER;
1510                 else
1511                         statype = CFG80211_STA_MESH_PEER_KERNEL;
1512                 break;
1513         case NL80211_IFTYPE_ADHOC:
1514                 statype = CFG80211_STA_IBSS;
1515                 break;
1516         case NL80211_IFTYPE_STATION:
1517                 if (!test_sta_flag(sta, WLAN_STA_TDLS_PEER)) {
1518                         statype = CFG80211_STA_AP_STA;
1519                         break;
1520                 }
1521                 if (test_sta_flag(sta, WLAN_STA_AUTHORIZED))
1522                         statype = CFG80211_STA_TDLS_PEER_ACTIVE;
1523                 else
1524                         statype = CFG80211_STA_TDLS_PEER_SETUP;
1525                 break;
1526         case NL80211_IFTYPE_AP:
1527         case NL80211_IFTYPE_AP_VLAN:
1528                 statype = CFG80211_STA_AP_CLIENT;
1529                 break;
1530         default:
1531                 err = -EOPNOTSUPP;
1532                 goto out_err;
1533         }
1534
1535         err = cfg80211_check_station_change(wiphy, params, statype);
1536         if (err)
1537                 goto out_err;
1538
1539         if (params->vlan && params->vlan != sta->sdata->dev) {
1540                 bool prev_4addr = false;
1541                 bool new_4addr = false;
1542
1543                 vlansdata = IEEE80211_DEV_TO_SUB_IF(params->vlan);
1544
1545                 if (params->vlan->ieee80211_ptr->use_4addr) {
1546                         if (vlansdata->u.vlan.sta) {
1547                                 err = -EBUSY;
1548                                 goto out_err;
1549                         }
1550
1551                         rcu_assign_pointer(vlansdata->u.vlan.sta, sta);
1552                         new_4addr = true;
1553                 }
1554
1555                 if (sta->sdata->vif.type == NL80211_IFTYPE_AP_VLAN &&
1556                     sta->sdata->u.vlan.sta) {
1557                         rcu_assign_pointer(sta->sdata->u.vlan.sta, NULL);
1558                         prev_4addr = true;
1559                 }
1560
1561                 sta->sdata = vlansdata;
1562
1563                 if (sta->sta_state == IEEE80211_STA_AUTHORIZED &&
1564                     prev_4addr != new_4addr) {
1565                         if (new_4addr)
1566                                 atomic_dec(&sta->sdata->bss->num_mcast_sta);
1567                         else
1568                                 atomic_inc(&sta->sdata->bss->num_mcast_sta);
1569                 }
1570
1571                 ieee80211_send_layer2_update(sta);
1572         }
1573
1574         err = sta_apply_parameters(local, sta, params);
1575         if (err)
1576                 goto out_err;
1577
1578         /* When peer becomes authorized, init rate control as well */
1579         if (test_sta_flag(sta, WLAN_STA_TDLS_PEER) &&
1580             test_sta_flag(sta, WLAN_STA_AUTHORIZED))
1581                 rate_control_rate_init(sta);
1582
1583         mutex_unlock(&local->sta_mtx);
1584
1585         if ((sdata->vif.type == NL80211_IFTYPE_AP ||
1586              sdata->vif.type == NL80211_IFTYPE_AP_VLAN) &&
1587             sta->known_smps_mode != sta->sdata->bss->req_smps &&
1588             test_sta_flag(sta, WLAN_STA_AUTHORIZED) &&
1589             sta_info_tx_streams(sta) != 1) {
1590                 ht_dbg(sta->sdata,
1591                        "%pM just authorized and MIMO capable - update SMPS\n",
1592                        sta->sta.addr);
1593                 ieee80211_send_smps_action(sta->sdata,
1594                         sta->sdata->bss->req_smps,
1595                         sta->sta.addr,
1596                         sta->sdata->vif.bss_conf.bssid);
1597         }
1598
1599         if (sdata->vif.type == NL80211_IFTYPE_STATION &&
1600             params->sta_flags_mask & BIT(NL80211_STA_FLAG_AUTHORIZED)) {
1601                 ieee80211_recalc_ps(local, -1);
1602                 ieee80211_recalc_ps_vif(sdata);
1603         }
1604
1605         return 0;
1606 out_err:
1607         mutex_unlock(&local->sta_mtx);
1608         return err;
1609 }
1610
1611 #ifdef CONFIG_MAC80211_MESH
1612 static int ieee80211_add_mpath(struct wiphy *wiphy, struct net_device *dev,
1613                                  u8 *dst, u8 *next_hop)
1614 {
1615         struct ieee80211_sub_if_data *sdata;
1616         struct mesh_path *mpath;
1617         struct sta_info *sta;
1618
1619         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1620
1621         rcu_read_lock();
1622         sta = sta_info_get(sdata, next_hop);
1623         if (!sta) {
1624                 rcu_read_unlock();
1625                 return -ENOENT;
1626         }
1627
1628         mpath = mesh_path_add(sdata, dst);
1629         if (IS_ERR(mpath)) {
1630                 rcu_read_unlock();
1631                 return PTR_ERR(mpath);
1632         }
1633
1634         mesh_path_fix_nexthop(mpath, sta);
1635
1636         rcu_read_unlock();
1637         return 0;
1638 }
1639
1640 static int ieee80211_del_mpath(struct wiphy *wiphy, struct net_device *dev,
1641                                u8 *dst)
1642 {
1643         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1644
1645         if (dst)
1646                 return mesh_path_del(sdata, dst);
1647
1648         mesh_path_flush_by_iface(sdata);
1649         return 0;
1650 }
1651
1652 static int ieee80211_change_mpath(struct wiphy *wiphy,
1653                                     struct net_device *dev,
1654                                     u8 *dst, u8 *next_hop)
1655 {
1656         struct ieee80211_sub_if_data *sdata;
1657         struct mesh_path *mpath;
1658         struct sta_info *sta;
1659
1660         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1661
1662         rcu_read_lock();
1663
1664         sta = sta_info_get(sdata, next_hop);
1665         if (!sta) {
1666                 rcu_read_unlock();
1667                 return -ENOENT;
1668         }
1669
1670         mpath = mesh_path_lookup(sdata, dst);
1671         if (!mpath) {
1672                 rcu_read_unlock();
1673                 return -ENOENT;
1674         }
1675
1676         mesh_path_fix_nexthop(mpath, sta);
1677
1678         rcu_read_unlock();
1679         return 0;
1680 }
1681
1682 static void mpath_set_pinfo(struct mesh_path *mpath, u8 *next_hop,
1683                             struct mpath_info *pinfo)
1684 {
1685         struct sta_info *next_hop_sta = rcu_dereference(mpath->next_hop);
1686
1687         if (next_hop_sta)
1688                 memcpy(next_hop, next_hop_sta->sta.addr, ETH_ALEN);
1689         else
1690                 memset(next_hop, 0, ETH_ALEN);
1691
1692         memset(pinfo, 0, sizeof(*pinfo));
1693
1694         pinfo->generation = mesh_paths_generation;
1695
1696         pinfo->filled = MPATH_INFO_FRAME_QLEN |
1697                         MPATH_INFO_SN |
1698                         MPATH_INFO_METRIC |
1699                         MPATH_INFO_EXPTIME |
1700                         MPATH_INFO_DISCOVERY_TIMEOUT |
1701                         MPATH_INFO_DISCOVERY_RETRIES |
1702                         MPATH_INFO_FLAGS;
1703
1704         pinfo->frame_qlen = mpath->frame_queue.qlen;
1705         pinfo->sn = mpath->sn;
1706         pinfo->metric = mpath->metric;
1707         if (time_before(jiffies, mpath->exp_time))
1708                 pinfo->exptime = jiffies_to_msecs(mpath->exp_time - jiffies);
1709         pinfo->discovery_timeout =
1710                         jiffies_to_msecs(mpath->discovery_timeout);
1711         pinfo->discovery_retries = mpath->discovery_retries;
1712         if (mpath->flags & MESH_PATH_ACTIVE)
1713                 pinfo->flags |= NL80211_MPATH_FLAG_ACTIVE;
1714         if (mpath->flags & MESH_PATH_RESOLVING)
1715                 pinfo->flags |= NL80211_MPATH_FLAG_RESOLVING;
1716         if (mpath->flags & MESH_PATH_SN_VALID)
1717                 pinfo->flags |= NL80211_MPATH_FLAG_SN_VALID;
1718         if (mpath->flags & MESH_PATH_FIXED)
1719                 pinfo->flags |= NL80211_MPATH_FLAG_FIXED;
1720         if (mpath->flags & MESH_PATH_RESOLVED)
1721                 pinfo->flags |= NL80211_MPATH_FLAG_RESOLVED;
1722 }
1723
1724 static int ieee80211_get_mpath(struct wiphy *wiphy, struct net_device *dev,
1725                                u8 *dst, u8 *next_hop, struct mpath_info *pinfo)
1726
1727 {
1728         struct ieee80211_sub_if_data *sdata;
1729         struct mesh_path *mpath;
1730
1731         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1732
1733         rcu_read_lock();
1734         mpath = mesh_path_lookup(sdata, dst);
1735         if (!mpath) {
1736                 rcu_read_unlock();
1737                 return -ENOENT;
1738         }
1739         memcpy(dst, mpath->dst, ETH_ALEN);
1740         mpath_set_pinfo(mpath, next_hop, pinfo);
1741         rcu_read_unlock();
1742         return 0;
1743 }
1744
1745 static int ieee80211_dump_mpath(struct wiphy *wiphy, struct net_device *dev,
1746                                  int idx, u8 *dst, u8 *next_hop,
1747                                  struct mpath_info *pinfo)
1748 {
1749         struct ieee80211_sub_if_data *sdata;
1750         struct mesh_path *mpath;
1751
1752         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1753
1754         rcu_read_lock();
1755         mpath = mesh_path_lookup_by_idx(sdata, idx);
1756         if (!mpath) {
1757                 rcu_read_unlock();
1758                 return -ENOENT;
1759         }
1760         memcpy(dst, mpath->dst, ETH_ALEN);
1761         mpath_set_pinfo(mpath, next_hop, pinfo);
1762         rcu_read_unlock();
1763         return 0;
1764 }
1765
1766 static int ieee80211_get_mesh_config(struct wiphy *wiphy,
1767                                 struct net_device *dev,
1768                                 struct mesh_config *conf)
1769 {
1770         struct ieee80211_sub_if_data *sdata;
1771         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1772
1773         memcpy(conf, &(sdata->u.mesh.mshcfg), sizeof(struct mesh_config));
1774         return 0;
1775 }
1776
1777 static inline bool _chg_mesh_attr(enum nl80211_meshconf_params parm, u32 mask)
1778 {
1779         return (mask >> (parm-1)) & 0x1;
1780 }
1781
1782 static int copy_mesh_setup(struct ieee80211_if_mesh *ifmsh,
1783                 const struct mesh_setup *setup)
1784 {
1785         u8 *new_ie;
1786         const u8 *old_ie;
1787         struct ieee80211_sub_if_data *sdata = container_of(ifmsh,
1788                                         struct ieee80211_sub_if_data, u.mesh);
1789
1790         /* allocate information elements */
1791         new_ie = NULL;
1792         old_ie = ifmsh->ie;
1793
1794         if (setup->ie_len) {
1795                 new_ie = kmemdup(setup->ie, setup->ie_len,
1796                                 GFP_KERNEL);
1797                 if (!new_ie)
1798                         return -ENOMEM;
1799         }
1800         ifmsh->ie_len = setup->ie_len;
1801         ifmsh->ie = new_ie;
1802         kfree(old_ie);
1803
1804         /* now copy the rest of the setup parameters */
1805         ifmsh->mesh_id_len = setup->mesh_id_len;
1806         memcpy(ifmsh->mesh_id, setup->mesh_id, ifmsh->mesh_id_len);
1807         ifmsh->mesh_sp_id = setup->sync_method;
1808         ifmsh->mesh_pp_id = setup->path_sel_proto;
1809         ifmsh->mesh_pm_id = setup->path_metric;
1810         ifmsh->user_mpm = setup->user_mpm;
1811         ifmsh->mesh_auth_id = setup->auth_id;
1812         ifmsh->security = IEEE80211_MESH_SEC_NONE;
1813         if (setup->is_authenticated)
1814                 ifmsh->security |= IEEE80211_MESH_SEC_AUTHED;
1815         if (setup->is_secure)
1816                 ifmsh->security |= IEEE80211_MESH_SEC_SECURED;
1817
1818         /* mcast rate setting in Mesh Node */
1819         memcpy(sdata->vif.bss_conf.mcast_rate, setup->mcast_rate,
1820                                                 sizeof(setup->mcast_rate));
1821         sdata->vif.bss_conf.basic_rates = setup->basic_rates;
1822
1823         sdata->vif.bss_conf.beacon_int = setup->beacon_interval;
1824         sdata->vif.bss_conf.dtim_period = setup->dtim_period;
1825
1826         return 0;
1827 }
1828
1829 static int ieee80211_update_mesh_config(struct wiphy *wiphy,
1830                                         struct net_device *dev, u32 mask,
1831                                         const struct mesh_config *nconf)
1832 {
1833         struct mesh_config *conf;
1834         struct ieee80211_sub_if_data *sdata;
1835         struct ieee80211_if_mesh *ifmsh;
1836
1837         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1838         ifmsh = &sdata->u.mesh;
1839
1840         /* Set the config options which we are interested in setting */
1841         conf = &(sdata->u.mesh.mshcfg);
1842         if (_chg_mesh_attr(NL80211_MESHCONF_RETRY_TIMEOUT, mask))
1843                 conf->dot11MeshRetryTimeout = nconf->dot11MeshRetryTimeout;
1844         if (_chg_mesh_attr(NL80211_MESHCONF_CONFIRM_TIMEOUT, mask))
1845                 conf->dot11MeshConfirmTimeout = nconf->dot11MeshConfirmTimeout;
1846         if (_chg_mesh_attr(NL80211_MESHCONF_HOLDING_TIMEOUT, mask))
1847                 conf->dot11MeshHoldingTimeout = nconf->dot11MeshHoldingTimeout;
1848         if (_chg_mesh_attr(NL80211_MESHCONF_MAX_PEER_LINKS, mask))
1849                 conf->dot11MeshMaxPeerLinks = nconf->dot11MeshMaxPeerLinks;
1850         if (_chg_mesh_attr(NL80211_MESHCONF_MAX_RETRIES, mask))
1851                 conf->dot11MeshMaxRetries = nconf->dot11MeshMaxRetries;
1852         if (_chg_mesh_attr(NL80211_MESHCONF_TTL, mask))
1853                 conf->dot11MeshTTL = nconf->dot11MeshTTL;
1854         if (_chg_mesh_attr(NL80211_MESHCONF_ELEMENT_TTL, mask))
1855                 conf->element_ttl = nconf->element_ttl;
1856         if (_chg_mesh_attr(NL80211_MESHCONF_AUTO_OPEN_PLINKS, mask)) {
1857                 if (ifmsh->user_mpm)
1858                         return -EBUSY;
1859                 conf->auto_open_plinks = nconf->auto_open_plinks;
1860         }
1861         if (_chg_mesh_attr(NL80211_MESHCONF_SYNC_OFFSET_MAX_NEIGHBOR, mask))
1862                 conf->dot11MeshNbrOffsetMaxNeighbor =
1863                         nconf->dot11MeshNbrOffsetMaxNeighbor;
1864         if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES, mask))
1865                 conf->dot11MeshHWMPmaxPREQretries =
1866                         nconf->dot11MeshHWMPmaxPREQretries;
1867         if (_chg_mesh_attr(NL80211_MESHCONF_PATH_REFRESH_TIME, mask))
1868                 conf->path_refresh_time = nconf->path_refresh_time;
1869         if (_chg_mesh_attr(NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT, mask))
1870                 conf->min_discovery_timeout = nconf->min_discovery_timeout;
1871         if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT, mask))
1872                 conf->dot11MeshHWMPactivePathTimeout =
1873                         nconf->dot11MeshHWMPactivePathTimeout;
1874         if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL, mask))
1875                 conf->dot11MeshHWMPpreqMinInterval =
1876                         nconf->dot11MeshHWMPpreqMinInterval;
1877         if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_PERR_MIN_INTERVAL, mask))
1878                 conf->dot11MeshHWMPperrMinInterval =
1879                         nconf->dot11MeshHWMPperrMinInterval;
1880         if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME,
1881                            mask))
1882                 conf->dot11MeshHWMPnetDiameterTraversalTime =
1883                         nconf->dot11MeshHWMPnetDiameterTraversalTime;
1884         if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_ROOTMODE, mask)) {
1885                 conf->dot11MeshHWMPRootMode = nconf->dot11MeshHWMPRootMode;
1886                 ieee80211_mesh_root_setup(ifmsh);
1887         }
1888         if (_chg_mesh_attr(NL80211_MESHCONF_GATE_ANNOUNCEMENTS, mask)) {
1889                 /* our current gate announcement implementation rides on root
1890                  * announcements, so require this ifmsh to also be a root node
1891                  * */
1892                 if (nconf->dot11MeshGateAnnouncementProtocol &&
1893                     !(conf->dot11MeshHWMPRootMode > IEEE80211_ROOTMODE_ROOT)) {
1894                         conf->dot11MeshHWMPRootMode = IEEE80211_PROACTIVE_RANN;
1895                         ieee80211_mesh_root_setup(ifmsh);
1896                 }
1897                 conf->dot11MeshGateAnnouncementProtocol =
1898                         nconf->dot11MeshGateAnnouncementProtocol;
1899         }
1900         if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_RANN_INTERVAL, mask))
1901                 conf->dot11MeshHWMPRannInterval =
1902                         nconf->dot11MeshHWMPRannInterval;
1903         if (_chg_mesh_attr(NL80211_MESHCONF_FORWARDING, mask))
1904                 conf->dot11MeshForwarding = nconf->dot11MeshForwarding;
1905         if (_chg_mesh_attr(NL80211_MESHCONF_RSSI_THRESHOLD, mask)) {
1906                 /* our RSSI threshold implementation is supported only for
1907                  * devices that report signal in dBm.
1908                  */
1909                 if (!(sdata->local->hw.flags & IEEE80211_HW_SIGNAL_DBM))
1910                         return -ENOTSUPP;
1911                 conf->rssi_threshold = nconf->rssi_threshold;
1912         }
1913         if (_chg_mesh_attr(NL80211_MESHCONF_HT_OPMODE, mask)) {
1914                 conf->ht_opmode = nconf->ht_opmode;
1915                 sdata->vif.bss_conf.ht_operation_mode = nconf->ht_opmode;
1916                 ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_HT);
1917         }
1918         if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_PATH_TO_ROOT_TIMEOUT, mask))
1919                 conf->dot11MeshHWMPactivePathToRootTimeout =
1920                         nconf->dot11MeshHWMPactivePathToRootTimeout;
1921         if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_ROOT_INTERVAL, mask))
1922                 conf->dot11MeshHWMProotInterval =
1923                         nconf->dot11MeshHWMProotInterval;
1924         if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_CONFIRMATION_INTERVAL, mask))
1925                 conf->dot11MeshHWMPconfirmationInterval =
1926                         nconf->dot11MeshHWMPconfirmationInterval;
1927         if (_chg_mesh_attr(NL80211_MESHCONF_POWER_MODE, mask)) {
1928                 conf->power_mode = nconf->power_mode;
1929                 ieee80211_mps_local_status_update(sdata);
1930         }
1931         if (_chg_mesh_attr(NL80211_MESHCONF_AWAKE_WINDOW, mask))
1932                 conf->dot11MeshAwakeWindowDuration =
1933                         nconf->dot11MeshAwakeWindowDuration;
1934         if (_chg_mesh_attr(NL80211_MESHCONF_PLINK_TIMEOUT, mask))
1935                 conf->plink_timeout = nconf->plink_timeout;
1936         ieee80211_mbss_info_change_notify(sdata, BSS_CHANGED_BEACON);
1937         return 0;
1938 }
1939
1940 static int ieee80211_join_mesh(struct wiphy *wiphy, struct net_device *dev,
1941                                const struct mesh_config *conf,
1942                                const struct mesh_setup *setup)
1943 {
1944         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1945         struct ieee80211_if_mesh *ifmsh = &sdata->u.mesh;
1946         int err;
1947
1948         memcpy(&ifmsh->mshcfg, conf, sizeof(struct mesh_config));
1949         err = copy_mesh_setup(ifmsh, setup);
1950         if (err)
1951                 return err;
1952
1953         /* can mesh use other SMPS modes? */
1954         sdata->smps_mode = IEEE80211_SMPS_OFF;
1955         sdata->needed_rx_chains = sdata->local->rx_chains;
1956
1957         mutex_lock(&sdata->local->mtx);
1958         err = ieee80211_vif_use_channel(sdata, &setup->chandef,
1959                                         IEEE80211_CHANCTX_SHARED);
1960         mutex_unlock(&sdata->local->mtx);
1961         if (err)
1962                 return err;
1963
1964         return ieee80211_start_mesh(sdata);
1965 }
1966
1967 static int ieee80211_leave_mesh(struct wiphy *wiphy, struct net_device *dev)
1968 {
1969         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1970
1971         ieee80211_stop_mesh(sdata);
1972         mutex_lock(&sdata->local->mtx);
1973         ieee80211_vif_release_channel(sdata);
1974         mutex_unlock(&sdata->local->mtx);
1975
1976         return 0;
1977 }
1978 #endif
1979
1980 static int ieee80211_change_bss(struct wiphy *wiphy,
1981                                 struct net_device *dev,
1982                                 struct bss_parameters *params)
1983 {
1984         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1985         enum ieee80211_band band;
1986         u32 changed = 0;
1987
1988         if (!sdata_dereference(sdata->u.ap.beacon, sdata))
1989                 return -ENOENT;
1990
1991         band = ieee80211_get_sdata_band(sdata);
1992
1993         if (params->use_cts_prot >= 0) {
1994                 sdata->vif.bss_conf.use_cts_prot = params->use_cts_prot;
1995                 changed |= BSS_CHANGED_ERP_CTS_PROT;
1996         }
1997         if (params->use_short_preamble >= 0) {
1998                 sdata->vif.bss_conf.use_short_preamble =
1999                         params->use_short_preamble;
2000                 changed |= BSS_CHANGED_ERP_PREAMBLE;
2001         }
2002
2003         if (!sdata->vif.bss_conf.use_short_slot &&
2004             band == IEEE80211_BAND_5GHZ) {
2005                 sdata->vif.bss_conf.use_short_slot = true;
2006                 changed |= BSS_CHANGED_ERP_SLOT;
2007         }
2008
2009         if (params->use_short_slot_time >= 0) {
2010                 sdata->vif.bss_conf.use_short_slot =
2011                         params->use_short_slot_time;
2012                 changed |= BSS_CHANGED_ERP_SLOT;
2013         }
2014
2015         if (params->basic_rates) {
2016                 ieee80211_parse_bitrates(&sdata->vif.bss_conf.chandef,
2017                                          wiphy->bands[band],
2018                                          params->basic_rates,
2019                                          params->basic_rates_len,
2020                                          &sdata->vif.bss_conf.basic_rates);
2021                 changed |= BSS_CHANGED_BASIC_RATES;
2022         }
2023
2024         if (params->ap_isolate >= 0) {
2025                 if (params->ap_isolate)
2026                         sdata->flags |= IEEE80211_SDATA_DONT_BRIDGE_PACKETS;
2027                 else
2028                         sdata->flags &= ~IEEE80211_SDATA_DONT_BRIDGE_PACKETS;
2029         }
2030
2031         if (params->ht_opmode >= 0) {
2032                 sdata->vif.bss_conf.ht_operation_mode =
2033                         (u16) params->ht_opmode;
2034                 changed |= BSS_CHANGED_HT;
2035         }
2036
2037         if (params->p2p_ctwindow >= 0) {
2038                 sdata->vif.bss_conf.p2p_noa_attr.oppps_ctwindow &=
2039                                         ~IEEE80211_P2P_OPPPS_CTWINDOW_MASK;
2040                 sdata->vif.bss_conf.p2p_noa_attr.oppps_ctwindow |=
2041                         params->p2p_ctwindow & IEEE80211_P2P_OPPPS_CTWINDOW_MASK;
2042                 changed |= BSS_CHANGED_P2P_PS;
2043         }
2044
2045         if (params->p2p_opp_ps > 0) {
2046                 sdata->vif.bss_conf.p2p_noa_attr.oppps_ctwindow |=
2047                                         IEEE80211_P2P_OPPPS_ENABLE_BIT;
2048                 changed |= BSS_CHANGED_P2P_PS;
2049         } else if (params->p2p_opp_ps == 0) {
2050                 sdata->vif.bss_conf.p2p_noa_attr.oppps_ctwindow &=
2051                                         ~IEEE80211_P2P_OPPPS_ENABLE_BIT;
2052                 changed |= BSS_CHANGED_P2P_PS;
2053         }
2054
2055         ieee80211_bss_info_change_notify(sdata, changed);
2056
2057         return 0;
2058 }
2059
2060 static int ieee80211_set_txq_params(struct wiphy *wiphy,
2061                                     struct net_device *dev,
2062                                     struct ieee80211_txq_params *params)
2063 {
2064         struct ieee80211_local *local = wiphy_priv(wiphy);
2065         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2066         struct ieee80211_tx_queue_params p;
2067
2068         if (!local->ops->conf_tx)
2069                 return -EOPNOTSUPP;
2070
2071         if (local->hw.queues < IEEE80211_NUM_ACS)
2072                 return -EOPNOTSUPP;
2073
2074         memset(&p, 0, sizeof(p));
2075         p.aifs = params->aifs;
2076         p.cw_max = params->cwmax;
2077         p.cw_min = params->cwmin;
2078         p.txop = params->txop;
2079
2080         /*
2081          * Setting tx queue params disables u-apsd because it's only
2082          * called in master mode.
2083          */
2084         p.uapsd = false;
2085
2086         sdata->tx_conf[params->ac] = p;
2087         if (drv_conf_tx(local, sdata, params->ac, &p)) {
2088                 wiphy_debug(local->hw.wiphy,
2089                             "failed to set TX queue parameters for AC %d\n",
2090                             params->ac);
2091                 return -EINVAL;
2092         }
2093
2094         ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_QOS);
2095
2096         return 0;
2097 }
2098
2099 #ifdef CONFIG_PM
2100 static int ieee80211_suspend(struct wiphy *wiphy,
2101                              struct cfg80211_wowlan *wowlan)
2102 {
2103         return __ieee80211_suspend(wiphy_priv(wiphy), wowlan);
2104 }
2105
2106 static int ieee80211_resume(struct wiphy *wiphy)
2107 {
2108         return __ieee80211_resume(wiphy_priv(wiphy));
2109 }
2110 #else
2111 #define ieee80211_suspend NULL
2112 #define ieee80211_resume NULL
2113 #endif
2114
2115 static int ieee80211_scan(struct wiphy *wiphy,
2116                           struct cfg80211_scan_request *req)
2117 {
2118         struct ieee80211_sub_if_data *sdata;
2119
2120         sdata = IEEE80211_WDEV_TO_SUB_IF(req->wdev);
2121
2122         switch (ieee80211_vif_type_p2p(&sdata->vif)) {
2123         case NL80211_IFTYPE_STATION:
2124         case NL80211_IFTYPE_ADHOC:
2125         case NL80211_IFTYPE_MESH_POINT:
2126         case NL80211_IFTYPE_P2P_CLIENT:
2127         case NL80211_IFTYPE_P2P_DEVICE:
2128                 break;
2129         case NL80211_IFTYPE_P2P_GO:
2130                 if (sdata->local->ops->hw_scan)
2131                         break;
2132                 /*
2133                  * FIXME: implement NoA while scanning in software,
2134                  * for now fall through to allow scanning only when
2135                  * beaconing hasn't been configured yet
2136                  */
2137         case NL80211_IFTYPE_AP:
2138                 /*
2139                  * If the scan has been forced (and the driver supports
2140                  * forcing), don't care about being beaconing already.
2141                  * This will create problems to the attached stations (e.g. all
2142                  * the  frames sent while scanning on other channel will be
2143                  * lost)
2144                  */
2145                 if (sdata->u.ap.beacon &&
2146                     (!(wiphy->features & NL80211_FEATURE_AP_SCAN) ||
2147                      !(req->flags & NL80211_SCAN_FLAG_AP)))
2148                         return -EOPNOTSUPP;
2149                 break;
2150         default:
2151                 return -EOPNOTSUPP;
2152         }
2153
2154         return ieee80211_request_scan(sdata, req);
2155 }
2156
2157 static int
2158 ieee80211_sched_scan_start(struct wiphy *wiphy,
2159                            struct net_device *dev,
2160                            struct cfg80211_sched_scan_request *req)
2161 {
2162         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2163
2164         if (!sdata->local->ops->sched_scan_start)
2165                 return -EOPNOTSUPP;
2166
2167         return ieee80211_request_sched_scan_start(sdata, req);
2168 }
2169
2170 static int
2171 ieee80211_sched_scan_stop(struct wiphy *wiphy, struct net_device *dev)
2172 {
2173         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2174
2175         if (!sdata->local->ops->sched_scan_stop)
2176                 return -EOPNOTSUPP;
2177
2178         return ieee80211_request_sched_scan_stop(sdata);
2179 }
2180
2181 static int ieee80211_auth(struct wiphy *wiphy, struct net_device *dev,
2182                           struct cfg80211_auth_request *req)
2183 {
2184         return ieee80211_mgd_auth(IEEE80211_DEV_TO_SUB_IF(dev), req);
2185 }
2186
2187 static int ieee80211_assoc(struct wiphy *wiphy, struct net_device *dev,
2188                            struct cfg80211_assoc_request *req)
2189 {
2190         return ieee80211_mgd_assoc(IEEE80211_DEV_TO_SUB_IF(dev), req);
2191 }
2192
2193 static int ieee80211_deauth(struct wiphy *wiphy, struct net_device *dev,
2194                             struct cfg80211_deauth_request *req)
2195 {
2196         return ieee80211_mgd_deauth(IEEE80211_DEV_TO_SUB_IF(dev), req);
2197 }
2198
2199 static int ieee80211_disassoc(struct wiphy *wiphy, struct net_device *dev,
2200                               struct cfg80211_disassoc_request *req)
2201 {
2202         return ieee80211_mgd_disassoc(IEEE80211_DEV_TO_SUB_IF(dev), req);
2203 }
2204
2205 static int ieee80211_join_ibss(struct wiphy *wiphy, struct net_device *dev,
2206                                struct cfg80211_ibss_params *params)
2207 {
2208         return ieee80211_ibss_join(IEEE80211_DEV_TO_SUB_IF(dev), params);
2209 }
2210
2211 static int ieee80211_leave_ibss(struct wiphy *wiphy, struct net_device *dev)
2212 {
2213         return ieee80211_ibss_leave(IEEE80211_DEV_TO_SUB_IF(dev));
2214 }
2215
2216 static int ieee80211_set_mcast_rate(struct wiphy *wiphy, struct net_device *dev,
2217                                     int rate[IEEE80211_NUM_BANDS])
2218 {
2219         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2220
2221         memcpy(sdata->vif.bss_conf.mcast_rate, rate,
2222                sizeof(int) * IEEE80211_NUM_BANDS);
2223
2224         return 0;
2225 }
2226
2227 static int ieee80211_set_wiphy_params(struct wiphy *wiphy, u32 changed)
2228 {
2229         struct ieee80211_local *local = wiphy_priv(wiphy);
2230         int err;
2231
2232         if (changed & WIPHY_PARAM_FRAG_THRESHOLD) {
2233                 err = drv_set_frag_threshold(local, wiphy->frag_threshold);
2234
2235                 if (err)
2236                         return err;
2237         }
2238
2239         if (changed & WIPHY_PARAM_COVERAGE_CLASS) {
2240                 err = drv_set_coverage_class(local, wiphy->coverage_class);
2241
2242                 if (err)
2243                         return err;
2244         }
2245
2246         if (changed & WIPHY_PARAM_RTS_THRESHOLD) {
2247                 err = drv_set_rts_threshold(local, wiphy->rts_threshold);
2248
2249                 if (err)
2250                         return err;
2251         }
2252
2253         if (changed & WIPHY_PARAM_RETRY_SHORT) {
2254                 if (wiphy->retry_short > IEEE80211_MAX_TX_RETRY)
2255                         return -EINVAL;
2256                 local->hw.conf.short_frame_max_tx_count = wiphy->retry_short;
2257         }
2258         if (changed & WIPHY_PARAM_RETRY_LONG) {
2259                 if (wiphy->retry_long > IEEE80211_MAX_TX_RETRY)
2260                         return -EINVAL;
2261                 local->hw.conf.long_frame_max_tx_count = wiphy->retry_long;
2262         }
2263         if (changed &
2264             (WIPHY_PARAM_RETRY_SHORT | WIPHY_PARAM_RETRY_LONG))
2265                 ieee80211_hw_config(local, IEEE80211_CONF_CHANGE_RETRY_LIMITS);
2266
2267         return 0;
2268 }
2269
2270 static int ieee80211_set_tx_power(struct wiphy *wiphy,
2271                                   struct wireless_dev *wdev,
2272                                   enum nl80211_tx_power_setting type, int mbm)
2273 {
2274         struct ieee80211_local *local = wiphy_priv(wiphy);
2275         struct ieee80211_sub_if_data *sdata;
2276
2277         if (wdev) {
2278                 sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
2279
2280                 switch (type) {
2281                 case NL80211_TX_POWER_AUTOMATIC:
2282                         sdata->user_power_level = IEEE80211_UNSET_POWER_LEVEL;
2283                         break;
2284                 case NL80211_TX_POWER_LIMITED:
2285                 case NL80211_TX_POWER_FIXED:
2286                         if (mbm < 0 || (mbm % 100))
2287                                 return -EOPNOTSUPP;
2288                         sdata->user_power_level = MBM_TO_DBM(mbm);
2289                         break;
2290                 }
2291
2292                 ieee80211_recalc_txpower(sdata);
2293
2294                 return 0;
2295         }
2296
2297         switch (type) {
2298         case NL80211_TX_POWER_AUTOMATIC:
2299                 local->user_power_level = IEEE80211_UNSET_POWER_LEVEL;
2300                 break;
2301         case NL80211_TX_POWER_LIMITED:
2302         case NL80211_TX_POWER_FIXED:
2303                 if (mbm < 0 || (mbm % 100))
2304                         return -EOPNOTSUPP;
2305                 local->user_power_level = MBM_TO_DBM(mbm);
2306                 break;
2307         }
2308
2309         mutex_lock(&local->iflist_mtx);
2310         list_for_each_entry(sdata, &local->interfaces, list)
2311                 sdata->user_power_level = local->user_power_level;
2312         list_for_each_entry(sdata, &local->interfaces, list)
2313                 ieee80211_recalc_txpower(sdata);
2314         mutex_unlock(&local->iflist_mtx);
2315
2316         return 0;
2317 }
2318
2319 static int ieee80211_get_tx_power(struct wiphy *wiphy,
2320                                   struct wireless_dev *wdev,
2321                                   int *dbm)
2322 {
2323         struct ieee80211_local *local = wiphy_priv(wiphy);
2324         struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
2325
2326         if (!local->use_chanctx)
2327                 *dbm = local->hw.conf.power_level;
2328         else
2329                 *dbm = sdata->vif.bss_conf.txpower;
2330
2331         return 0;
2332 }
2333
2334 static int ieee80211_set_wds_peer(struct wiphy *wiphy, struct net_device *dev,
2335                                   const u8 *addr)
2336 {
2337         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2338
2339         memcpy(&sdata->u.wds.remote_addr, addr, ETH_ALEN);
2340
2341         return 0;
2342 }
2343
2344 static void ieee80211_rfkill_poll(struct wiphy *wiphy)
2345 {
2346         struct ieee80211_local *local = wiphy_priv(wiphy);
2347
2348         drv_rfkill_poll(local);
2349 }
2350
2351 #ifdef CONFIG_NL80211_TESTMODE
2352 static int ieee80211_testmode_cmd(struct wiphy *wiphy,
2353                                   struct wireless_dev *wdev,
2354                                   void *data, int len)
2355 {
2356         struct ieee80211_local *local = wiphy_priv(wiphy);
2357         struct ieee80211_vif *vif = NULL;
2358
2359         if (!local->ops->testmode_cmd)
2360                 return -EOPNOTSUPP;
2361
2362         if (wdev) {
2363                 struct ieee80211_sub_if_data *sdata;
2364
2365                 sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
2366                 if (sdata->flags & IEEE80211_SDATA_IN_DRIVER)
2367                         vif = &sdata->vif;
2368         }
2369
2370         return local->ops->testmode_cmd(&local->hw, vif, data, len);
2371 }
2372
2373 static int ieee80211_testmode_dump(struct wiphy *wiphy,
2374                                    struct sk_buff *skb,
2375                                    struct netlink_callback *cb,
2376                                    void *data, int len)
2377 {
2378         struct ieee80211_local *local = wiphy_priv(wiphy);
2379
2380         if (!local->ops->testmode_dump)
2381                 return -EOPNOTSUPP;
2382
2383         return local->ops->testmode_dump(&local->hw, skb, cb, data, len);
2384 }
2385 #endif
2386
2387 int __ieee80211_request_smps_ap(struct ieee80211_sub_if_data *sdata,
2388                                 enum ieee80211_smps_mode smps_mode)
2389 {
2390         struct sta_info *sta;
2391         enum ieee80211_smps_mode old_req;
2392         int i;
2393
2394         if (WARN_ON_ONCE(sdata->vif.type != NL80211_IFTYPE_AP))
2395                 return -EINVAL;
2396
2397         if (sdata->vif.bss_conf.chandef.width == NL80211_CHAN_WIDTH_20_NOHT)
2398                 return 0;
2399
2400         old_req = sdata->u.ap.req_smps;
2401         sdata->u.ap.req_smps = smps_mode;
2402
2403         /* AUTOMATIC doesn't mean much for AP - don't allow it */
2404         if (old_req == smps_mode ||
2405             smps_mode == IEEE80211_SMPS_AUTOMATIC)
2406                 return 0;
2407
2408          /* If no associated stations, there's no need to do anything */
2409         if (!atomic_read(&sdata->u.ap.num_mcast_sta)) {
2410                 sdata->smps_mode = smps_mode;
2411                 ieee80211_queue_work(&sdata->local->hw, &sdata->recalc_smps);
2412                 return 0;
2413         }
2414
2415         ht_dbg(sdata,
2416                "SMSP %d requested in AP mode, sending Action frame to %d stations\n",
2417                smps_mode, atomic_read(&sdata->u.ap.num_mcast_sta));
2418
2419         mutex_lock(&sdata->local->sta_mtx);
2420         for (i = 0; i < STA_HASH_SIZE; i++) {
2421                 for (sta = rcu_dereference_protected(sdata->local->sta_hash[i],
2422                                 lockdep_is_held(&sdata->local->sta_mtx));
2423                      sta;
2424                      sta = rcu_dereference_protected(sta->hnext,
2425                                 lockdep_is_held(&sdata->local->sta_mtx))) {
2426                         /*
2427                          * Only stations associated to our AP and
2428                          * associated VLANs
2429                          */
2430                         if (sta->sdata->bss != &sdata->u.ap)
2431                                 continue;
2432
2433                         /* This station doesn't support MIMO - skip it */
2434                         if (sta_info_tx_streams(sta) == 1)
2435                                 continue;
2436
2437                         /*
2438                          * Don't wake up a STA just to send the action frame
2439                          * unless we are getting more restrictive.
2440                          */
2441                         if (test_sta_flag(sta, WLAN_STA_PS_STA) &&
2442                             !ieee80211_smps_is_restrictive(sta->known_smps_mode,
2443                                                            smps_mode)) {
2444                                 ht_dbg(sdata,
2445                                        "Won't send SMPS to sleeping STA %pM\n",
2446                                        sta->sta.addr);
2447                                 continue;
2448                         }
2449
2450                         /*
2451                          * If the STA is not authorized, wait until it gets
2452                          * authorized and the action frame will be sent then.
2453                          */
2454                         if (!test_sta_flag(sta, WLAN_STA_AUTHORIZED))
2455                                 continue;
2456
2457                         ht_dbg(sdata, "Sending SMPS to %pM\n", sta->sta.addr);
2458                         ieee80211_send_smps_action(sdata, smps_mode,
2459                                                    sta->sta.addr,
2460                                                    sdata->vif.bss_conf.bssid);
2461                 }
2462         }
2463         mutex_unlock(&sdata->local->sta_mtx);
2464
2465         sdata->smps_mode = smps_mode;
2466         ieee80211_queue_work(&sdata->local->hw, &sdata->recalc_smps);
2467
2468         return 0;
2469 }
2470
2471 int __ieee80211_request_smps_mgd(struct ieee80211_sub_if_data *sdata,
2472                                  enum ieee80211_smps_mode smps_mode)
2473 {
2474         const u8 *ap;
2475         enum ieee80211_smps_mode old_req;
2476         int err;
2477
2478         lockdep_assert_held(&sdata->wdev.mtx);
2479
2480         if (WARN_ON_ONCE(sdata->vif.type != NL80211_IFTYPE_STATION))
2481                 return -EINVAL;
2482
2483         old_req = sdata->u.mgd.req_smps;
2484         sdata->u.mgd.req_smps = smps_mode;
2485
2486         if (old_req == smps_mode &&
2487             smps_mode != IEEE80211_SMPS_AUTOMATIC)
2488                 return 0;
2489
2490         /*
2491          * If not associated, or current association is not an HT
2492          * association, there's no need to do anything, just store
2493          * the new value until we associate.
2494          */
2495         if (!sdata->u.mgd.associated ||
2496             sdata->vif.bss_conf.chandef.width == NL80211_CHAN_WIDTH_20_NOHT)
2497                 return 0;
2498
2499         ap = sdata->u.mgd.associated->bssid;
2500
2501         if (smps_mode == IEEE80211_SMPS_AUTOMATIC) {
2502                 if (sdata->u.mgd.powersave)
2503                         smps_mode = IEEE80211_SMPS_DYNAMIC;
2504                 else
2505                         smps_mode = IEEE80211_SMPS_OFF;
2506         }
2507
2508         /* send SM PS frame to AP */
2509         err = ieee80211_send_smps_action(sdata, smps_mode,
2510                                          ap, ap);
2511         if (err)
2512                 sdata->u.mgd.req_smps = old_req;
2513
2514         return err;
2515 }
2516
2517 static int ieee80211_set_power_mgmt(struct wiphy *wiphy, struct net_device *dev,
2518                                     bool enabled, int timeout)
2519 {
2520         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2521         struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
2522
2523         if (sdata->vif.type != NL80211_IFTYPE_STATION)
2524                 return -EOPNOTSUPP;
2525
2526         if (!(local->hw.flags & IEEE80211_HW_SUPPORTS_PS))
2527                 return -EOPNOTSUPP;
2528
2529         if (enabled == sdata->u.mgd.powersave &&
2530             timeout == local->dynamic_ps_forced_timeout)
2531                 return 0;
2532
2533         sdata->u.mgd.powersave = enabled;
2534         local->dynamic_ps_forced_timeout = timeout;
2535
2536         /* no change, but if automatic follow powersave */
2537         sdata_lock(sdata);
2538         __ieee80211_request_smps_mgd(sdata, sdata->u.mgd.req_smps);
2539         sdata_unlock(sdata);
2540
2541         if (local->hw.flags & IEEE80211_HW_SUPPORTS_DYNAMIC_PS)
2542                 ieee80211_hw_config(local, IEEE80211_CONF_CHANGE_PS);
2543
2544         ieee80211_recalc_ps(local, -1);
2545         ieee80211_recalc_ps_vif(sdata);
2546
2547         return 0;
2548 }
2549
2550 static int ieee80211_set_cqm_rssi_config(struct wiphy *wiphy,
2551                                          struct net_device *dev,
2552                                          s32 rssi_thold, u32 rssi_hyst)
2553 {
2554         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2555         struct ieee80211_vif *vif = &sdata->vif;
2556         struct ieee80211_bss_conf *bss_conf = &vif->bss_conf;
2557
2558         if (rssi_thold == bss_conf->cqm_rssi_thold &&
2559             rssi_hyst == bss_conf->cqm_rssi_hyst)
2560                 return 0;
2561
2562         bss_conf->cqm_rssi_thold = rssi_thold;
2563         bss_conf->cqm_rssi_hyst = rssi_hyst;
2564
2565         /* tell the driver upon association, unless already associated */
2566         if (sdata->u.mgd.associated &&
2567             sdata->vif.driver_flags & IEEE80211_VIF_SUPPORTS_CQM_RSSI)
2568                 ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_CQM);
2569
2570         return 0;
2571 }
2572
2573 static int ieee80211_set_bitrate_mask(struct wiphy *wiphy,
2574                                       struct net_device *dev,
2575                                       const u8 *addr,
2576                                       const struct cfg80211_bitrate_mask *mask)
2577 {
2578         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2579         struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
2580         int i, ret;
2581
2582         if (!ieee80211_sdata_running(sdata))
2583                 return -ENETDOWN;
2584
2585         if (local->hw.flags & IEEE80211_HW_HAS_RATE_CONTROL) {
2586                 ret = drv_set_bitrate_mask(local, sdata, mask);
2587                 if (ret)
2588                         return ret;
2589         }
2590
2591         for (i = 0; i < IEEE80211_NUM_BANDS; i++) {
2592                 struct ieee80211_supported_band *sband = wiphy->bands[i];
2593                 int j;
2594
2595                 sdata->rc_rateidx_mask[i] = mask->control[i].legacy;
2596                 memcpy(sdata->rc_rateidx_mcs_mask[i], mask->control[i].ht_mcs,
2597                        sizeof(mask->control[i].ht_mcs));
2598
2599                 sdata->rc_has_mcs_mask[i] = false;
2600                 if (!sband)
2601                         continue;
2602
2603                 for (j = 0; j < IEEE80211_HT_MCS_MASK_LEN; j++)
2604                         if (~sdata->rc_rateidx_mcs_mask[i][j]) {
2605                                 sdata->rc_has_mcs_mask[i] = true;
2606                                 break;
2607                         }
2608         }
2609
2610         return 0;
2611 }
2612
2613 static int ieee80211_start_roc_work(struct ieee80211_local *local,
2614                                     struct ieee80211_sub_if_data *sdata,
2615                                     struct ieee80211_channel *channel,
2616                                     unsigned int duration, u64 *cookie,
2617                                     struct sk_buff *txskb,
2618                                     enum ieee80211_roc_type type)
2619 {
2620         struct ieee80211_roc_work *roc, *tmp;
2621         bool queued = false;
2622         int ret;
2623
2624         lockdep_assert_held(&local->mtx);
2625
2626         if (local->use_chanctx && !local->ops->remain_on_channel)
2627                 return -EOPNOTSUPP;
2628
2629         roc = kzalloc(sizeof(*roc), GFP_KERNEL);
2630         if (!roc)
2631                 return -ENOMEM;
2632
2633         roc->chan = channel;
2634         roc->duration = duration;
2635         roc->req_duration = duration;
2636         roc->frame = txskb;
2637         roc->type = type;
2638         roc->mgmt_tx_cookie = (unsigned long)txskb;
2639         roc->sdata = sdata;
2640         INIT_DELAYED_WORK(&roc->work, ieee80211_sw_roc_work);
2641         INIT_LIST_HEAD(&roc->dependents);
2642
2643         /*
2644          * cookie is either the roc cookie (for normal roc)
2645          * or the SKB (for mgmt TX)
2646          */
2647         if (!txskb) {
2648                 /* local->mtx protects this */
2649                 local->roc_cookie_counter++;
2650                 roc->cookie = local->roc_cookie_counter;
2651                 /* wow, you wrapped 64 bits ... more likely a bug */
2652                 if (WARN_ON(roc->cookie == 0)) {
2653                         roc->cookie = 1;
2654                         local->roc_cookie_counter++;
2655                 }
2656                 *cookie = roc->cookie;
2657         } else {
2658                 *cookie = (unsigned long)txskb;
2659         }
2660
2661         /* if there's one pending or we're scanning, queue this one */
2662         if (!list_empty(&local->roc_list) ||
2663             local->scanning || local->radar_detect_enabled)
2664                 goto out_check_combine;
2665
2666         /* if not HW assist, just queue & schedule work */
2667         if (!local->ops->remain_on_channel) {
2668                 ieee80211_queue_delayed_work(&local->hw, &roc->work, 0);
2669                 goto out_queue;
2670         }
2671
2672         /* otherwise actually kick it off here (for error handling) */
2673
2674         /*
2675          * If the duration is zero, then the driver
2676          * wouldn't actually do anything. Set it to
2677          * 10 for now.
2678          *
2679          * TODO: cancel the off-channel operation
2680          *       when we get the SKB's TX status and
2681          *       the wait time was zero before.
2682          */
2683         if (!duration)
2684                 duration = 10;
2685
2686         ret = drv_remain_on_channel(local, sdata, channel, duration, type);
2687         if (ret) {
2688                 kfree(roc);
2689                 return ret;
2690         }
2691
2692         roc->started = true;
2693         goto out_queue;
2694
2695  out_check_combine:
2696         list_for_each_entry(tmp, &local->roc_list, list) {
2697                 if (tmp->chan != channel || tmp->sdata != sdata)
2698                         continue;
2699
2700                 /*
2701                  * Extend this ROC if possible:
2702                  *
2703                  * If it hasn't started yet, just increase the duration
2704                  * and add the new one to the list of dependents.
2705                  * If the type of the new ROC has higher priority, modify the
2706                  * type of the previous one to match that of the new one.
2707                  */
2708                 if (!tmp->started) {
2709                         list_add_tail(&roc->list, &tmp->dependents);
2710                         tmp->duration = max(tmp->duration, roc->duration);
2711                         tmp->type = max(tmp->type, roc->type);
2712                         queued = true;
2713                         break;
2714                 }
2715
2716                 /* If it has already started, it's more difficult ... */
2717                 if (local->ops->remain_on_channel) {
2718                         unsigned long j = jiffies;
2719
2720                         /*
2721                          * In the offloaded ROC case, if it hasn't begun, add
2722                          * this new one to the dependent list to be handled
2723                          * when the master one begins. If it has begun,
2724                          * check that there's still a minimum time left and
2725                          * if so, start this one, transmitting the frame, but
2726                          * add it to the list directly after this one with
2727                          * a reduced time so we'll ask the driver to execute
2728                          * it right after finishing the previous one, in the
2729                          * hope that it'll also be executed right afterwards,
2730                          * effectively extending the old one.
2731                          * If there's no minimum time left, just add it to the
2732                          * normal list.
2733                          * TODO: the ROC type is ignored here, assuming that it
2734                          * is better to immediately use the current ROC.
2735                          */
2736                         if (!tmp->hw_begun) {
2737                                 list_add_tail(&roc->list, &tmp->dependents);
2738                                 queued = true;
2739                                 break;
2740                         }
2741
2742                         if (time_before(j + IEEE80211_ROC_MIN_LEFT,
2743                                         tmp->hw_start_time +
2744                                         msecs_to_jiffies(tmp->duration))) {
2745                                 int new_dur;
2746
2747                                 ieee80211_handle_roc_started(roc);
2748
2749                                 new_dur = roc->duration -
2750                                           jiffies_to_msecs(tmp->hw_start_time +
2751                                                            msecs_to_jiffies(
2752                                                                 tmp->duration) -
2753                                                            j);
2754
2755                                 if (new_dur > 0) {
2756                                         /* add right after tmp */
2757                                         list_add(&roc->list, &tmp->list);
2758                                 } else {
2759                                         list_add_tail(&roc->list,
2760                                                       &tmp->dependents);
2761                                 }
2762                                 queued = true;
2763                         }
2764                 } else if (del_timer_sync(&tmp->work.timer)) {
2765                         unsigned long new_end;
2766
2767                         /*
2768                          * In the software ROC case, cancel the timer, if
2769                          * that fails then the finish work is already
2770                          * queued/pending and thus we queue the new ROC
2771                          * normally, if that succeeds then we can extend
2772                          * the timer duration and TX the frame (if any.)
2773                          */
2774
2775                         list_add_tail(&roc->list, &tmp->dependents);
2776                         queued = true;
2777
2778                         new_end = jiffies + msecs_to_jiffies(roc->duration);
2779
2780                         /* ok, it was started & we canceled timer */
2781                         if (time_after(new_end, tmp->work.timer.expires))
2782                                 mod_timer(&tmp->work.timer, new_end);
2783                         else
2784                                 add_timer(&tmp->work.timer);
2785
2786                         ieee80211_handle_roc_started(roc);
2787                 }
2788                 break;
2789         }
2790
2791  out_queue:
2792         if (!queued)
2793                 list_add_tail(&roc->list, &local->roc_list);
2794
2795         return 0;
2796 }
2797
2798 static int ieee80211_remain_on_channel(struct wiphy *wiphy,
2799                                        struct wireless_dev *wdev,
2800                                        struct ieee80211_channel *chan,
2801                                        unsigned int duration,
2802                                        u64 *cookie)
2803 {
2804         struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
2805         struct ieee80211_local *local = sdata->local;
2806         int ret;
2807
2808         mutex_lock(&local->mtx);
2809         ret = ieee80211_start_roc_work(local, sdata, chan,
2810                                        duration, cookie, NULL,
2811                                        IEEE80211_ROC_TYPE_NORMAL);
2812         mutex_unlock(&local->mtx);
2813
2814         return ret;
2815 }
2816
2817 static int ieee80211_cancel_roc(struct ieee80211_local *local,
2818                                 u64 cookie, bool mgmt_tx)
2819 {
2820         struct ieee80211_roc_work *roc, *tmp, *found = NULL;
2821         int ret;
2822
2823         mutex_lock(&local->mtx);
2824         list_for_each_entry_safe(roc, tmp, &local->roc_list, list) {
2825                 struct ieee80211_roc_work *dep, *tmp2;
2826
2827                 list_for_each_entry_safe(dep, tmp2, &roc->dependents, list) {
2828                         if (!mgmt_tx && dep->cookie != cookie)
2829                                 continue;
2830                         else if (mgmt_tx && dep->mgmt_tx_cookie != cookie)
2831                                 continue;
2832                         /* found dependent item -- just remove it */
2833                         list_del(&dep->list);
2834                         mutex_unlock(&local->mtx);
2835
2836                         ieee80211_roc_notify_destroy(dep, true);
2837                         return 0;
2838                 }
2839
2840                 if (!mgmt_tx && roc->cookie != cookie)
2841                         continue;
2842                 else if (mgmt_tx && roc->mgmt_tx_cookie != cookie)
2843                         continue;
2844
2845                 found = roc;
2846                 break;
2847         }
2848
2849         if (!found) {
2850                 mutex_unlock(&local->mtx);
2851                 return -ENOENT;
2852         }
2853
2854         /*
2855          * We found the item to cancel, so do that. Note that it
2856          * may have dependents, which we also cancel (and send
2857          * the expired signal for.) Not doing so would be quite
2858          * tricky here, but we may need to fix it later.
2859          */
2860
2861         if (local->ops->remain_on_channel) {
2862                 if (found->started) {
2863                         ret = drv_cancel_remain_on_channel(local);
2864                         if (WARN_ON_ONCE(ret)) {
2865                                 mutex_unlock(&local->mtx);
2866                                 return ret;
2867                         }
2868                 }
2869
2870                 list_del(&found->list);
2871
2872                 if (found->started)
2873                         ieee80211_start_next_roc(local);
2874                 mutex_unlock(&local->mtx);
2875
2876                 ieee80211_roc_notify_destroy(found, true);
2877         } else {
2878                 /* work may be pending so use it all the time */
2879                 found->abort = true;
2880                 ieee80211_queue_delayed_work(&local->hw, &found->work, 0);
2881
2882                 mutex_unlock(&local->mtx);
2883
2884                 /* work will clean up etc */
2885                 flush_delayed_work(&found->work);
2886                 WARN_ON(!found->to_be_freed);
2887                 kfree(found);
2888         }
2889
2890         return 0;
2891 }
2892
2893 static int ieee80211_cancel_remain_on_channel(struct wiphy *wiphy,
2894                                               struct wireless_dev *wdev,
2895                                               u64 cookie)
2896 {
2897         struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
2898         struct ieee80211_local *local = sdata->local;
2899
2900         return ieee80211_cancel_roc(local, cookie, false);
2901 }
2902
2903 static int ieee80211_start_radar_detection(struct wiphy *wiphy,
2904                                            struct net_device *dev,
2905                                            struct cfg80211_chan_def *chandef)
2906 {
2907         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2908         struct ieee80211_local *local = sdata->local;
2909         unsigned long timeout;
2910         int err;
2911
2912         mutex_lock(&local->mtx);
2913         if (!list_empty(&local->roc_list) || local->scanning) {
2914                 err = -EBUSY;
2915                 goto out_unlock;
2916         }
2917
2918         /* whatever, but channel contexts should not complain about that one */
2919         sdata->smps_mode = IEEE80211_SMPS_OFF;
2920         sdata->needed_rx_chains = local->rx_chains;
2921         sdata->radar_required = true;
2922
2923         err = ieee80211_vif_use_channel(sdata, chandef,
2924                                         IEEE80211_CHANCTX_SHARED);
2925         if (err)
2926                 goto out_unlock;
2927
2928         timeout = msecs_to_jiffies(IEEE80211_DFS_MIN_CAC_TIME_MS);
2929         ieee80211_queue_delayed_work(&sdata->local->hw,
2930                                      &sdata->dfs_cac_timer_work, timeout);
2931
2932  out_unlock:
2933         mutex_unlock(&local->mtx);
2934         return err;
2935 }
2936
2937 static struct cfg80211_beacon_data *
2938 cfg80211_beacon_dup(struct cfg80211_beacon_data *beacon)
2939 {
2940         struct cfg80211_beacon_data *new_beacon;
2941         u8 *pos;
2942         int len;
2943
2944         len = beacon->head_len + beacon->tail_len + beacon->beacon_ies_len +
2945               beacon->proberesp_ies_len + beacon->assocresp_ies_len +
2946               beacon->probe_resp_len;
2947
2948         new_beacon = kzalloc(sizeof(*new_beacon) + len, GFP_KERNEL);
2949         if (!new_beacon)
2950                 return NULL;
2951
2952         pos = (u8 *)(new_beacon + 1);
2953         if (beacon->head_len) {
2954                 new_beacon->head_len = beacon->head_len;
2955                 new_beacon->head = pos;
2956                 memcpy(pos, beacon->head, beacon->head_len);
2957                 pos += beacon->head_len;
2958         }
2959         if (beacon->tail_len) {
2960                 new_beacon->tail_len = beacon->tail_len;
2961                 new_beacon->tail = pos;
2962                 memcpy(pos, beacon->tail, beacon->tail_len);
2963                 pos += beacon->tail_len;
2964         }
2965         if (beacon->beacon_ies_len) {
2966                 new_beacon->beacon_ies_len = beacon->beacon_ies_len;
2967                 new_beacon->beacon_ies = pos;
2968                 memcpy(pos, beacon->beacon_ies, beacon->beacon_ies_len);
2969                 pos += beacon->beacon_ies_len;
2970         }
2971         if (beacon->proberesp_ies_len) {
2972                 new_beacon->proberesp_ies_len = beacon->proberesp_ies_len;
2973                 new_beacon->proberesp_ies = pos;
2974                 memcpy(pos, beacon->proberesp_ies, beacon->proberesp_ies_len);
2975                 pos += beacon->proberesp_ies_len;
2976         }
2977         if (beacon->assocresp_ies_len) {
2978                 new_beacon->assocresp_ies_len = beacon->assocresp_ies_len;
2979                 new_beacon->assocresp_ies = pos;
2980                 memcpy(pos, beacon->assocresp_ies, beacon->assocresp_ies_len);
2981                 pos += beacon->assocresp_ies_len;
2982         }
2983         if (beacon->probe_resp_len) {
2984                 new_beacon->probe_resp_len = beacon->probe_resp_len;
2985                 beacon->probe_resp = pos;
2986                 memcpy(pos, beacon->probe_resp, beacon->probe_resp_len);
2987                 pos += beacon->probe_resp_len;
2988         }
2989
2990         return new_beacon;
2991 }
2992
2993 void ieee80211_csa_finalize_work(struct work_struct *work)
2994 {
2995         struct ieee80211_sub_if_data *sdata =
2996                 container_of(work, struct ieee80211_sub_if_data,
2997                              csa_finalize_work);
2998         struct ieee80211_local *local = sdata->local;
2999         int err, changed = 0;
3000
3001         sdata_lock(sdata);
3002         /* AP might have been stopped while waiting for the lock. */
3003         if (!sdata->vif.csa_active)
3004                 goto unlock;
3005
3006         if (!ieee80211_sdata_running(sdata))
3007                 goto unlock;
3008
3009         sdata->radar_required = sdata->csa_radar_required;
3010         mutex_lock(&local->mtx);
3011         err = ieee80211_vif_change_channel(sdata, &changed);
3012         mutex_unlock(&local->mtx);
3013         if (WARN_ON(err < 0))
3014                 goto unlock;
3015
3016         if (!local->use_chanctx) {
3017                 local->_oper_chandef = sdata->csa_chandef;
3018                 ieee80211_hw_config(local, 0);
3019         }
3020
3021         ieee80211_bss_info_change_notify(sdata, changed);
3022
3023         sdata->vif.csa_active = false;
3024         switch (sdata->vif.type) {
3025         case NL80211_IFTYPE_AP:
3026                 err = ieee80211_assign_beacon(sdata, sdata->u.ap.next_beacon);
3027                 if (err < 0)
3028                         goto unlock;
3029
3030                 changed |= err;
3031                 kfree(sdata->u.ap.next_beacon);
3032                 sdata->u.ap.next_beacon = NULL;
3033
3034                 ieee80211_bss_info_change_notify(sdata, err);
3035                 break;
3036         case NL80211_IFTYPE_ADHOC:
3037                 ieee80211_ibss_finish_csa(sdata);
3038                 break;
3039 #ifdef CONFIG_MAC80211_MESH
3040         case NL80211_IFTYPE_MESH_POINT:
3041                 err = ieee80211_mesh_finish_csa(sdata);
3042                 if (err < 0)
3043                         goto unlock;
3044                 break;
3045 #endif
3046         default:
3047                 WARN_ON(1);
3048                 goto unlock;
3049         }
3050
3051         ieee80211_wake_queues_by_reason(&sdata->local->hw,
3052                                         IEEE80211_MAX_QUEUE_MAP,
3053                                         IEEE80211_QUEUE_STOP_REASON_CSA);
3054
3055         cfg80211_ch_switch_notify(sdata->dev, &sdata->csa_chandef);
3056
3057 unlock:
3058         sdata_unlock(sdata);
3059 }
3060
3061 int ieee80211_channel_switch(struct wiphy *wiphy, struct net_device *dev,
3062                              struct cfg80211_csa_settings *params)
3063 {
3064         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
3065         struct ieee80211_local *local = sdata->local;
3066         struct ieee80211_chanctx_conf *chanctx_conf;
3067         struct ieee80211_chanctx *chanctx;
3068         struct ieee80211_if_mesh __maybe_unused *ifmsh;
3069         int err, num_chanctx;
3070
3071         lockdep_assert_held(&sdata->wdev.mtx);
3072
3073         if (!list_empty(&local->roc_list) || local->scanning)
3074                 return -EBUSY;
3075
3076         if (sdata->wdev.cac_started)
3077                 return -EBUSY;
3078
3079         if (cfg80211_chandef_identical(&params->chandef,
3080                                        &sdata->vif.bss_conf.chandef))
3081                 return -EINVAL;
3082
3083         rcu_read_lock();
3084         chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf);
3085         if (!chanctx_conf) {
3086                 rcu_read_unlock();
3087                 return -EBUSY;
3088         }
3089
3090         /* don't handle for multi-VIF cases */
3091         chanctx = container_of(chanctx_conf, struct ieee80211_chanctx, conf);
3092         if (chanctx->refcount > 1) {
3093                 rcu_read_unlock();
3094                 return -EBUSY;
3095         }
3096         num_chanctx = 0;
3097         list_for_each_entry_rcu(chanctx, &local->chanctx_list, list)
3098                 num_chanctx++;
3099         rcu_read_unlock();
3100
3101         if (num_chanctx > 1)
3102                 return -EBUSY;
3103
3104         /* don't allow another channel switch if one is already active. */
3105         if (sdata->vif.csa_active)
3106                 return -EBUSY;
3107
3108         switch (sdata->vif.type) {
3109         case NL80211_IFTYPE_AP:
3110                 sdata->csa_counter_offset_beacon =
3111                         params->counter_offset_beacon;
3112                 sdata->csa_counter_offset_presp = params->counter_offset_presp;
3113                 sdata->u.ap.next_beacon =
3114                         cfg80211_beacon_dup(&params->beacon_after);
3115                 if (!sdata->u.ap.next_beacon)
3116                         return -ENOMEM;
3117
3118                 err = ieee80211_assign_beacon(sdata, &params->beacon_csa);
3119                 if (err < 0) {
3120                         kfree(sdata->u.ap.next_beacon);
3121                         return err;
3122                 }
3123                 break;
3124         case NL80211_IFTYPE_ADHOC:
3125                 if (!sdata->vif.bss_conf.ibss_joined)
3126                         return -EINVAL;
3127
3128                 if (params->chandef.width != sdata->u.ibss.chandef.width)
3129                         return -EINVAL;
3130
3131                 switch (params->chandef.width) {
3132                 case NL80211_CHAN_WIDTH_40:
3133                         if (cfg80211_get_chandef_type(&params->chandef) !=
3134                             cfg80211_get_chandef_type(&sdata->u.ibss.chandef))
3135                                 return -EINVAL;
3136                 case NL80211_CHAN_WIDTH_5:
3137                 case NL80211_CHAN_WIDTH_10:
3138                 case NL80211_CHAN_WIDTH_20_NOHT:
3139                 case NL80211_CHAN_WIDTH_20:
3140                         break;
3141                 default:
3142                         return -EINVAL;
3143                 }
3144
3145                 /* changes into another band are not supported */
3146                 if (sdata->u.ibss.chandef.chan->band !=
3147                     params->chandef.chan->band)
3148                         return -EINVAL;
3149
3150                 err = ieee80211_ibss_csa_beacon(sdata, params);
3151                 if (err < 0)
3152                         return err;
3153                 break;
3154 #ifdef CONFIG_MAC80211_MESH
3155         case NL80211_IFTYPE_MESH_POINT:
3156                 ifmsh = &sdata->u.mesh;
3157
3158                 if (!ifmsh->mesh_id)
3159                         return -EINVAL;
3160
3161                 if (params->chandef.width != sdata->vif.bss_conf.chandef.width)
3162                         return -EINVAL;
3163
3164                 /* changes into another band are not supported */
3165                 if (sdata->vif.bss_conf.chandef.chan->band !=
3166                     params->chandef.chan->band)
3167                         return -EINVAL;
3168
3169                 ifmsh->chsw_init = true;
3170                 if (!ifmsh->pre_value)
3171                         ifmsh->pre_value = 1;
3172                 else
3173                         ifmsh->pre_value++;
3174
3175                 err = ieee80211_mesh_csa_beacon(sdata, params, true);
3176                 if (err < 0) {
3177                         ifmsh->chsw_init = false;
3178                         return err;
3179                 }
3180                 break;
3181 #endif
3182         default:
3183                 return -EOPNOTSUPP;
3184         }
3185
3186         sdata->csa_radar_required = params->radar_required;
3187
3188         if (params->block_tx)
3189                 ieee80211_stop_queues_by_reason(&local->hw,
3190                                 IEEE80211_MAX_QUEUE_MAP,
3191                                 IEEE80211_QUEUE_STOP_REASON_CSA);
3192
3193         sdata->csa_chandef = params->chandef;
3194         sdata->vif.csa_active = true;
3195
3196         ieee80211_bss_info_change_notify(sdata, err);
3197         drv_channel_switch_beacon(sdata, &params->chandef);
3198
3199         return 0;
3200 }
3201
3202 static int ieee80211_mgmt_tx(struct wiphy *wiphy, struct wireless_dev *wdev,
3203                              struct cfg80211_mgmt_tx_params *params,
3204                              u64 *cookie)
3205 {
3206         struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
3207         struct ieee80211_local *local = sdata->local;
3208         struct sk_buff *skb;
3209         struct sta_info *sta;
3210         const struct ieee80211_mgmt *mgmt = (void *)params->buf;
3211         bool need_offchan = false;
3212         u32 flags;
3213         int ret;
3214
3215         if (params->dont_wait_for_ack)
3216                 flags = IEEE80211_TX_CTL_NO_ACK;
3217         else
3218                 flags = IEEE80211_TX_INTFL_NL80211_FRAME_TX |
3219                         IEEE80211_TX_CTL_REQ_TX_STATUS;
3220
3221         if (params->no_cck)
3222                 flags |= IEEE80211_TX_CTL_NO_CCK_RATE;
3223
3224         switch (sdata->vif.type) {
3225         case NL80211_IFTYPE_ADHOC:
3226                 if (!sdata->vif.bss_conf.ibss_joined)
3227                         need_offchan = true;
3228                 /* fall through */
3229 #ifdef CONFIG_MAC80211_MESH
3230         case NL80211_IFTYPE_MESH_POINT:
3231                 if (ieee80211_vif_is_mesh(&sdata->vif) &&
3232                     !sdata->u.mesh.mesh_id_len)
3233                         need_offchan = true;
3234                 /* fall through */
3235 #endif
3236         case NL80211_IFTYPE_AP:
3237         case NL80211_IFTYPE_AP_VLAN:
3238         case NL80211_IFTYPE_P2P_GO:
3239                 if (sdata->vif.type != NL80211_IFTYPE_ADHOC &&
3240                     !ieee80211_vif_is_mesh(&sdata->vif) &&
3241                     !rcu_access_pointer(sdata->bss->beacon))
3242                         need_offchan = true;
3243                 if (!ieee80211_is_action(mgmt->frame_control) ||
3244                     mgmt->u.action.category == WLAN_CATEGORY_PUBLIC ||
3245                     mgmt->u.action.category == WLAN_CATEGORY_SELF_PROTECTED ||
3246                     mgmt->u.action.category == WLAN_CATEGORY_SPECTRUM_MGMT)
3247                         break;
3248                 rcu_read_lock();
3249                 sta = sta_info_get(sdata, mgmt->da);
3250                 rcu_read_unlock();
3251                 if (!sta)
3252                         return -ENOLINK;
3253                 break;
3254         case NL80211_IFTYPE_STATION:
3255         case NL80211_IFTYPE_P2P_CLIENT:
3256                 if (!sdata->u.mgd.associated)
3257                         need_offchan = true;
3258                 break;
3259         case NL80211_IFTYPE_P2P_DEVICE:
3260                 need_offchan = true;
3261                 break;
3262         default:
3263                 return -EOPNOTSUPP;
3264         }
3265
3266         /* configurations requiring offchan cannot work if no channel has been
3267          * specified
3268          */
3269         if (need_offchan && !params->chan)
3270                 return -EINVAL;
3271
3272         mutex_lock(&local->mtx);
3273
3274         /* Check if the operating channel is the requested channel */
3275         if (!need_offchan) {
3276                 struct ieee80211_chanctx_conf *chanctx_conf;
3277
3278                 rcu_read_lock();
3279                 chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf);
3280
3281                 if (chanctx_conf) {
3282                         need_offchan = params->chan &&
3283                                        (params->chan !=
3284                                         chanctx_conf->def.chan);
3285                 } else if (!params->chan) {
3286                         ret = -EINVAL;
3287                         rcu_read_unlock();
3288                         goto out_unlock;
3289                 } else {
3290                         need_offchan = true;
3291                 }
3292                 rcu_read_unlock();
3293         }
3294
3295         if (need_offchan && !params->offchan) {
3296                 ret = -EBUSY;
3297                 goto out_unlock;
3298         }
3299
3300         skb = dev_alloc_skb(local->hw.extra_tx_headroom + params->len);
3301         if (!skb) {
3302                 ret = -ENOMEM;
3303                 goto out_unlock;
3304         }
3305         skb_reserve(skb, local->hw.extra_tx_headroom);
3306
3307         memcpy(skb_put(skb, params->len), params->buf, params->len);
3308
3309         IEEE80211_SKB_CB(skb)->flags = flags;
3310
3311         skb->dev = sdata->dev;
3312
3313         if (!need_offchan) {
3314                 *cookie = (unsigned long) skb;
3315                 ieee80211_tx_skb(sdata, skb);
3316                 ret = 0;
3317                 goto out_unlock;
3318         }
3319
3320         IEEE80211_SKB_CB(skb)->flags |= IEEE80211_TX_CTL_TX_OFFCHAN |
3321                                         IEEE80211_TX_INTFL_OFFCHAN_TX_OK;
3322         if (local->hw.flags & IEEE80211_HW_QUEUE_CONTROL)
3323                 IEEE80211_SKB_CB(skb)->hw_queue =
3324                         local->hw.offchannel_tx_hw_queue;
3325
3326         /* This will handle all kinds of coalescing and immediate TX */
3327         ret = ieee80211_start_roc_work(local, sdata, params->chan,
3328                                        params->wait, cookie, skb,
3329                                        IEEE80211_ROC_TYPE_MGMT_TX);
3330         if (ret)
3331                 kfree_skb(skb);
3332  out_unlock:
3333         mutex_unlock(&local->mtx);
3334         return ret;
3335 }
3336
3337 static int ieee80211_mgmt_tx_cancel_wait(struct wiphy *wiphy,
3338                                          struct wireless_dev *wdev,
3339                                          u64 cookie)
3340 {
3341         struct ieee80211_local *local = wiphy_priv(wiphy);
3342
3343         return ieee80211_cancel_roc(local, cookie, true);
3344 }
3345
3346 static void ieee80211_mgmt_frame_register(struct wiphy *wiphy,
3347                                           struct wireless_dev *wdev,
3348                                           u16 frame_type, bool reg)
3349 {
3350         struct ieee80211_local *local = wiphy_priv(wiphy);
3351
3352         switch (frame_type) {
3353         case IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_PROBE_REQ:
3354                 if (reg)
3355                         local->probe_req_reg++;
3356                 else
3357                         local->probe_req_reg--;
3358
3359                 if (!local->open_count)
3360                         break;
3361
3362                 ieee80211_queue_work(&local->hw, &local->reconfig_filter);
3363                 break;
3364         default:
3365                 break;
3366         }
3367 }
3368
3369 static int ieee80211_set_antenna(struct wiphy *wiphy, u32 tx_ant, u32 rx_ant)
3370 {
3371         struct ieee80211_local *local = wiphy_priv(wiphy);
3372
3373         if (local->started)
3374                 return -EOPNOTSUPP;
3375
3376         return drv_set_antenna(local, tx_ant, rx_ant);
3377 }
3378
3379 static int ieee80211_get_antenna(struct wiphy *wiphy, u32 *tx_ant, u32 *rx_ant)
3380 {
3381         struct ieee80211_local *local = wiphy_priv(wiphy);
3382
3383         return drv_get_antenna(local, tx_ant, rx_ant);
3384 }
3385
3386 static int ieee80211_set_ringparam(struct wiphy *wiphy, u32 tx, u32 rx)
3387 {
3388         struct ieee80211_local *local = wiphy_priv(wiphy);
3389
3390         return drv_set_ringparam(local, tx, rx);
3391 }
3392
3393 static void ieee80211_get_ringparam(struct wiphy *wiphy,
3394                                     u32 *tx, u32 *tx_max, u32 *rx, u32 *rx_max)
3395 {
3396         struct ieee80211_local *local = wiphy_priv(wiphy);
3397
3398         drv_get_ringparam(local, tx, tx_max, rx, rx_max);
3399 }
3400
3401 static int ieee80211_set_rekey_data(struct wiphy *wiphy,
3402                                     struct net_device *dev,
3403                                     struct cfg80211_gtk_rekey_data *data)
3404 {
3405         struct ieee80211_local *local = wiphy_priv(wiphy);
3406         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
3407
3408         if (!local->ops->set_rekey_data)
3409                 return -EOPNOTSUPP;
3410
3411         drv_set_rekey_data(local, sdata, data);
3412
3413         return 0;
3414 }
3415
3416 static void ieee80211_tdls_add_ext_capab(struct sk_buff *skb)
3417 {
3418         u8 *pos = (void *)skb_put(skb, 7);
3419
3420         *pos++ = WLAN_EID_EXT_CAPABILITY;
3421         *pos++ = 5; /* len */
3422         *pos++ = 0x0;
3423         *pos++ = 0x0;
3424         *pos++ = 0x0;
3425         *pos++ = 0x0;
3426         *pos++ = WLAN_EXT_CAPA5_TDLS_ENABLED;
3427 }
3428
3429 static u16 ieee80211_get_tdls_sta_capab(struct ieee80211_sub_if_data *sdata)
3430 {
3431         struct ieee80211_local *local = sdata->local;
3432         u16 capab;
3433
3434         capab = 0;
3435         if (ieee80211_get_sdata_band(sdata) != IEEE80211_BAND_2GHZ)
3436                 return capab;
3437
3438         if (!(local->hw.flags & IEEE80211_HW_2GHZ_SHORT_SLOT_INCAPABLE))
3439                 capab |= WLAN_CAPABILITY_SHORT_SLOT_TIME;
3440         if (!(local->hw.flags & IEEE80211_HW_2GHZ_SHORT_PREAMBLE_INCAPABLE))
3441                 capab |= WLAN_CAPABILITY_SHORT_PREAMBLE;
3442
3443         return capab;
3444 }
3445
3446 static void ieee80211_tdls_add_link_ie(struct sk_buff *skb, u8 *src_addr,
3447                                        u8 *peer, u8 *bssid)
3448 {
3449         struct ieee80211_tdls_lnkie *lnkid;
3450
3451         lnkid = (void *)skb_put(skb, sizeof(struct ieee80211_tdls_lnkie));
3452
3453         lnkid->ie_type = WLAN_EID_LINK_ID;
3454         lnkid->ie_len = sizeof(struct ieee80211_tdls_lnkie) - 2;
3455
3456         memcpy(lnkid->bssid, bssid, ETH_ALEN);
3457         memcpy(lnkid->init_sta, src_addr, ETH_ALEN);
3458         memcpy(lnkid->resp_sta, peer, ETH_ALEN);
3459 }
3460
3461 static int
3462 ieee80211_prep_tdls_encap_data(struct wiphy *wiphy, struct net_device *dev,
3463                                u8 *peer, u8 action_code, u8 dialog_token,
3464                                u16 status_code, struct sk_buff *skb)
3465 {
3466         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
3467         enum ieee80211_band band = ieee80211_get_sdata_band(sdata);
3468         struct ieee80211_tdls_data *tf;
3469
3470         tf = (void *)skb_put(skb, offsetof(struct ieee80211_tdls_data, u));
3471
3472         memcpy(tf->da, peer, ETH_ALEN);
3473         memcpy(tf->sa, sdata->vif.addr, ETH_ALEN);
3474         tf->ether_type = cpu_to_be16(ETH_P_TDLS);
3475         tf->payload_type = WLAN_TDLS_SNAP_RFTYPE;
3476
3477         switch (action_code) {
3478         case WLAN_TDLS_SETUP_REQUEST:
3479                 tf->category = WLAN_CATEGORY_TDLS;
3480                 tf->action_code = WLAN_TDLS_SETUP_REQUEST;
3481
3482                 skb_put(skb, sizeof(tf->u.setup_req));
3483                 tf->u.setup_req.dialog_token = dialog_token;
3484                 tf->u.setup_req.capability =
3485                         cpu_to_le16(ieee80211_get_tdls_sta_capab(sdata));
3486
3487                 ieee80211_add_srates_ie(sdata, skb, false, band);
3488                 ieee80211_add_ext_srates_ie(sdata, skb, false, band);
3489                 ieee80211_tdls_add_ext_capab(skb);
3490                 break;
3491         case WLAN_TDLS_SETUP_RESPONSE:
3492                 tf->category = WLAN_CATEGORY_TDLS;
3493                 tf->action_code = WLAN_TDLS_SETUP_RESPONSE;
3494
3495                 skb_put(skb, sizeof(tf->u.setup_resp));
3496                 tf->u.setup_resp.status_code = cpu_to_le16(status_code);
3497                 tf->u.setup_resp.dialog_token = dialog_token;
3498                 tf->u.setup_resp.capability =
3499                         cpu_to_le16(ieee80211_get_tdls_sta_capab(sdata));
3500
3501                 ieee80211_add_srates_ie(sdata, skb, false, band);
3502                 ieee80211_add_ext_srates_ie(sdata, skb, false, band);
3503                 ieee80211_tdls_add_ext_capab(skb);
3504                 break;
3505         case WLAN_TDLS_SETUP_CONFIRM:
3506                 tf->category = WLAN_CATEGORY_TDLS;
3507                 tf->action_code = WLAN_TDLS_SETUP_CONFIRM;
3508
3509                 skb_put(skb, sizeof(tf->u.setup_cfm));
3510                 tf->u.setup_cfm.status_code = cpu_to_le16(status_code);
3511                 tf->u.setup_cfm.dialog_token = dialog_token;
3512                 break;
3513         case WLAN_TDLS_TEARDOWN:
3514                 tf->category = WLAN_CATEGORY_TDLS;
3515                 tf->action_code = WLAN_TDLS_TEARDOWN;
3516
3517                 skb_put(skb, sizeof(tf->u.teardown));
3518                 tf->u.teardown.reason_code = cpu_to_le16(status_code);
3519                 break;
3520         case WLAN_TDLS_DISCOVERY_REQUEST:
3521                 tf->category = WLAN_CATEGORY_TDLS;
3522                 tf->action_code = WLAN_TDLS_DISCOVERY_REQUEST;
3523
3524                 skb_put(skb, sizeof(tf->u.discover_req));
3525                 tf->u.discover_req.dialog_token = dialog_token;
3526                 break;
3527         default:
3528                 return -EINVAL;
3529         }
3530
3531         return 0;
3532 }
3533
3534 static int
3535 ieee80211_prep_tdls_direct(struct wiphy *wiphy, struct net_device *dev,
3536                            u8 *peer, u8 action_code, u8 dialog_token,
3537                            u16 status_code, struct sk_buff *skb)
3538 {
3539         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
3540         enum ieee80211_band band = ieee80211_get_sdata_band(sdata);
3541         struct ieee80211_mgmt *mgmt;
3542
3543         mgmt = (void *)skb_put(skb, 24);
3544         memset(mgmt, 0, 24);
3545         memcpy(mgmt->da, peer, ETH_ALEN);
3546         memcpy(mgmt->sa, sdata->vif.addr, ETH_ALEN);
3547         memcpy(mgmt->bssid, sdata->u.mgd.bssid, ETH_ALEN);
3548
3549         mgmt->frame_control = cpu_to_le16(IEEE80211_FTYPE_MGMT |
3550                                           IEEE80211_STYPE_ACTION);
3551
3552         switch (action_code) {
3553         case WLAN_PUB_ACTION_TDLS_DISCOVER_RES:
3554                 skb_put(skb, 1 + sizeof(mgmt->u.action.u.tdls_discover_resp));
3555                 mgmt->u.action.category = WLAN_CATEGORY_PUBLIC;
3556                 mgmt->u.action.u.tdls_discover_resp.action_code =
3557                         WLAN_PUB_ACTION_TDLS_DISCOVER_RES;
3558                 mgmt->u.action.u.tdls_discover_resp.dialog_token =
3559                         dialog_token;
3560                 mgmt->u.action.u.tdls_discover_resp.capability =
3561                         cpu_to_le16(ieee80211_get_tdls_sta_capab(sdata));
3562
3563                 ieee80211_add_srates_ie(sdata, skb, false, band);
3564                 ieee80211_add_ext_srates_ie(sdata, skb, false, band);
3565                 ieee80211_tdls_add_ext_capab(skb);
3566                 break;
3567         default:
3568                 return -EINVAL;
3569         }
3570
3571         return 0;
3572 }
3573
3574 static int ieee80211_tdls_mgmt(struct wiphy *wiphy, struct net_device *dev,
3575                                u8 *peer, u8 action_code, u8 dialog_token,
3576                                u16 status_code, const u8 *extra_ies,
3577                                size_t extra_ies_len)
3578 {
3579         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
3580         struct ieee80211_local *local = sdata->local;
3581         struct sk_buff *skb = NULL;
3582         bool send_direct;
3583         int ret;
3584
3585         if (!(wiphy->flags & WIPHY_FLAG_SUPPORTS_TDLS))
3586                 return -ENOTSUPP;
3587
3588         /* make sure we are in managed mode, and associated */
3589         if (sdata->vif.type != NL80211_IFTYPE_STATION ||
3590             !sdata->u.mgd.associated)
3591                 return -EINVAL;
3592
3593         tdls_dbg(sdata, "TDLS mgmt action %d peer %pM\n",
3594                  action_code, peer);
3595
3596         skb = dev_alloc_skb(local->hw.extra_tx_headroom +
3597                             max(sizeof(struct ieee80211_mgmt),
3598                                 sizeof(struct ieee80211_tdls_data)) +
3599                             50 + /* supported rates */
3600                             7 + /* ext capab */
3601                             extra_ies_len +
3602                             sizeof(struct ieee80211_tdls_lnkie));
3603         if (!skb)
3604                 return -ENOMEM;
3605
3606         skb_reserve(skb, local->hw.extra_tx_headroom);
3607
3608         switch (action_code) {
3609         case WLAN_TDLS_SETUP_REQUEST:
3610         case WLAN_TDLS_SETUP_RESPONSE:
3611         case WLAN_TDLS_SETUP_CONFIRM:
3612         case WLAN_TDLS_TEARDOWN:
3613         case WLAN_TDLS_DISCOVERY_REQUEST:
3614                 ret = ieee80211_prep_tdls_encap_data(wiphy, dev, peer,
3615                                                      action_code, dialog_token,
3616                                                      status_code, skb);
3617                 send_direct = false;
3618                 break;
3619         case WLAN_PUB_ACTION_TDLS_DISCOVER_RES:
3620                 ret = ieee80211_prep_tdls_direct(wiphy, dev, peer, action_code,
3621                                                  dialog_token, status_code,
3622                                                  skb);
3623                 send_direct = true;
3624                 break;
3625         default:
3626                 ret = -ENOTSUPP;
3627                 break;
3628         }
3629
3630         if (ret < 0)
3631                 goto fail;
3632
3633         if (extra_ies_len)
3634                 memcpy(skb_put(skb, extra_ies_len), extra_ies, extra_ies_len);
3635
3636         /* the TDLS link IE is always added last */
3637         switch (action_code) {
3638         case WLAN_TDLS_SETUP_REQUEST:
3639         case WLAN_TDLS_SETUP_CONFIRM:
3640         case WLAN_TDLS_TEARDOWN:
3641         case WLAN_TDLS_DISCOVERY_REQUEST:
3642                 /* we are the initiator */
3643                 ieee80211_tdls_add_link_ie(skb, sdata->vif.addr, peer,
3644                                            sdata->u.mgd.bssid);
3645                 break;
3646         case WLAN_TDLS_SETUP_RESPONSE:
3647         case WLAN_PUB_ACTION_TDLS_DISCOVER_RES:
3648                 /* we are the responder */
3649                 ieee80211_tdls_add_link_ie(skb, peer, sdata->vif.addr,
3650                                            sdata->u.mgd.bssid);
3651                 break;
3652         default:
3653                 ret = -ENOTSUPP;
3654                 goto fail;
3655         }
3656
3657         if (send_direct) {
3658                 ieee80211_tx_skb(sdata, skb);
3659                 return 0;
3660         }
3661
3662         /*
3663          * According to 802.11z: Setup req/resp are sent in AC_BK, otherwise
3664          * we should default to AC_VI.
3665          */
3666         switch (action_code) {
3667         case WLAN_TDLS_SETUP_REQUEST:
3668         case WLAN_TDLS_SETUP_RESPONSE:
3669                 skb_set_queue_mapping(skb, IEEE80211_AC_BK);
3670                 skb->priority = 2;
3671                 break;
3672         default:
3673                 skb_set_queue_mapping(skb, IEEE80211_AC_VI);
3674                 skb->priority = 5;
3675                 break;
3676         }
3677
3678         /* disable bottom halves when entering the Tx path */
3679         local_bh_disable();
3680         ret = ieee80211_subif_start_xmit(skb, dev);
3681         local_bh_enable();
3682
3683         return ret;
3684
3685 fail:
3686         dev_kfree_skb(skb);
3687         return ret;
3688 }
3689
3690 static int ieee80211_tdls_oper(struct wiphy *wiphy, struct net_device *dev,
3691                                u8 *peer, enum nl80211_tdls_operation oper)
3692 {
3693         struct sta_info *sta;
3694         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
3695
3696         if (!(wiphy->flags & WIPHY_FLAG_SUPPORTS_TDLS))
3697                 return -ENOTSUPP;
3698
3699         if (sdata->vif.type != NL80211_IFTYPE_STATION)
3700                 return -EINVAL;
3701
3702         tdls_dbg(sdata, "TDLS oper %d peer %pM\n", oper, peer);
3703
3704         switch (oper) {
3705         case NL80211_TDLS_ENABLE_LINK:
3706                 rcu_read_lock();
3707                 sta = sta_info_get(sdata, peer);
3708                 if (!sta) {
3709                         rcu_read_unlock();
3710                         return -ENOLINK;
3711                 }
3712
3713                 set_sta_flag(sta, WLAN_STA_TDLS_PEER_AUTH);
3714                 rcu_read_unlock();
3715                 break;
3716         case NL80211_TDLS_DISABLE_LINK:
3717                 return sta_info_destroy_addr(sdata, peer);
3718         case NL80211_TDLS_TEARDOWN:
3719         case NL80211_TDLS_SETUP:
3720         case NL80211_TDLS_DISCOVERY_REQ:
3721                 /* We don't support in-driver setup/teardown/discovery */
3722                 return -ENOTSUPP;
3723         default:
3724                 return -ENOTSUPP;
3725         }
3726
3727         return 0;
3728 }
3729
3730 static int ieee80211_probe_client(struct wiphy *wiphy, struct net_device *dev,
3731                                   const u8 *peer, u64 *cookie)
3732 {
3733         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
3734         struct ieee80211_local *local = sdata->local;
3735         struct ieee80211_qos_hdr *nullfunc;
3736         struct sk_buff *skb;
3737         int size = sizeof(*nullfunc);
3738         __le16 fc;
3739         bool qos;
3740         struct ieee80211_tx_info *info;
3741         struct sta_info *sta;
3742         struct ieee80211_chanctx_conf *chanctx_conf;
3743         enum ieee80211_band band;
3744
3745         rcu_read_lock();
3746         chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf);
3747         if (WARN_ON(!chanctx_conf)) {
3748                 rcu_read_unlock();
3749                 return -EINVAL;
3750         }
3751         band = chanctx_conf->def.chan->band;
3752         sta = sta_info_get_bss(sdata, peer);
3753         if (sta) {
3754                 qos = test_sta_flag(sta, WLAN_STA_WME);
3755         } else {
3756                 rcu_read_unlock();
3757                 return -ENOLINK;
3758         }
3759
3760         if (qos) {
3761                 fc = cpu_to_le16(IEEE80211_FTYPE_DATA |
3762                                  IEEE80211_STYPE_QOS_NULLFUNC |
3763                                  IEEE80211_FCTL_FROMDS);
3764         } else {
3765                 size -= 2;
3766                 fc = cpu_to_le16(IEEE80211_FTYPE_DATA |
3767                                  IEEE80211_STYPE_NULLFUNC |
3768                                  IEEE80211_FCTL_FROMDS);
3769         }
3770
3771         skb = dev_alloc_skb(local->hw.extra_tx_headroom + size);
3772         if (!skb) {
3773                 rcu_read_unlock();
3774                 return -ENOMEM;
3775         }
3776
3777         skb->dev = dev;
3778
3779         skb_reserve(skb, local->hw.extra_tx_headroom);
3780
3781         nullfunc = (void *) skb_put(skb, size);
3782         nullfunc->frame_control = fc;
3783         nullfunc->duration_id = 0;
3784         memcpy(nullfunc->addr1, sta->sta.addr, ETH_ALEN);
3785         memcpy(nullfunc->addr2, sdata->vif.addr, ETH_ALEN);
3786         memcpy(nullfunc->addr3, sdata->vif.addr, ETH_ALEN);
3787         nullfunc->seq_ctrl = 0;
3788
3789         info = IEEE80211_SKB_CB(skb);
3790
3791         info->flags |= IEEE80211_TX_CTL_REQ_TX_STATUS |
3792                        IEEE80211_TX_INTFL_NL80211_FRAME_TX;
3793
3794         skb_set_queue_mapping(skb, IEEE80211_AC_VO);
3795         skb->priority = 7;
3796         if (qos)
3797                 nullfunc->qos_ctrl = cpu_to_le16(7);
3798
3799         local_bh_disable();
3800         ieee80211_xmit(sdata, skb, band);
3801         local_bh_enable();
3802         rcu_read_unlock();
3803
3804         *cookie = (unsigned long) skb;
3805         return 0;
3806 }
3807
3808 static int ieee80211_cfg_get_channel(struct wiphy *wiphy,
3809                                      struct wireless_dev *wdev,
3810                                      struct cfg80211_chan_def *chandef)
3811 {
3812         struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
3813         struct ieee80211_local *local = wiphy_priv(wiphy);
3814         struct ieee80211_chanctx_conf *chanctx_conf;
3815         int ret = -ENODATA;
3816
3817         rcu_read_lock();
3818         chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf);
3819         if (chanctx_conf) {
3820                 *chandef = chanctx_conf->def;
3821                 ret = 0;
3822         } else if (local->open_count > 0 &&
3823                    local->open_count == local->monitors &&
3824                    sdata->vif.type == NL80211_IFTYPE_MONITOR) {
3825                 if (local->use_chanctx)
3826                         *chandef = local->monitor_chandef;
3827                 else
3828                         *chandef = local->_oper_chandef;
3829                 ret = 0;
3830         }
3831         rcu_read_unlock();
3832
3833         return ret;
3834 }
3835
3836 #ifdef CONFIG_PM
3837 static void ieee80211_set_wakeup(struct wiphy *wiphy, bool enabled)
3838 {
3839         drv_set_wakeup(wiphy_priv(wiphy), enabled);
3840 }
3841 #endif
3842
3843 static int ieee80211_set_qos_map(struct wiphy *wiphy,
3844                                  struct net_device *dev,
3845                                  struct cfg80211_qos_map *qos_map)
3846 {
3847         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
3848         struct mac80211_qos_map *new_qos_map, *old_qos_map;
3849
3850         if (qos_map) {
3851                 new_qos_map = kzalloc(sizeof(*new_qos_map), GFP_KERNEL);
3852                 if (!new_qos_map)
3853                         return -ENOMEM;
3854                 memcpy(&new_qos_map->qos_map, qos_map, sizeof(*qos_map));
3855         } else {
3856                 /* A NULL qos_map was passed to disable QoS mapping */
3857                 new_qos_map = NULL;
3858         }
3859
3860         old_qos_map = sdata_dereference(sdata->qos_map, sdata);
3861         rcu_assign_pointer(sdata->qos_map, new_qos_map);
3862         if (old_qos_map)
3863                 kfree_rcu(old_qos_map, rcu_head);
3864
3865         return 0;
3866 }
3867
3868 struct cfg80211_ops mac80211_config_ops = {
3869         .add_virtual_intf = ieee80211_add_iface,
3870         .del_virtual_intf = ieee80211_del_iface,
3871         .change_virtual_intf = ieee80211_change_iface,
3872         .start_p2p_device = ieee80211_start_p2p_device,
3873         .stop_p2p_device = ieee80211_stop_p2p_device,
3874         .add_key = ieee80211_add_key,
3875         .del_key = ieee80211_del_key,
3876         .get_key = ieee80211_get_key,
3877         .set_default_key = ieee80211_config_default_key,
3878         .set_default_mgmt_key = ieee80211_config_default_mgmt_key,
3879         .start_ap = ieee80211_start_ap,
3880         .change_beacon = ieee80211_change_beacon,
3881         .stop_ap = ieee80211_stop_ap,
3882         .add_station = ieee80211_add_station,
3883         .del_station = ieee80211_del_station,
3884         .change_station = ieee80211_change_station,
3885         .get_station = ieee80211_get_station,
3886         .dump_station = ieee80211_dump_station,
3887         .dump_survey = ieee80211_dump_survey,
3888 #ifdef CONFIG_MAC80211_MESH
3889         .add_mpath = ieee80211_add_mpath,
3890         .del_mpath = ieee80211_del_mpath,
3891         .change_mpath = ieee80211_change_mpath,
3892         .get_mpath = ieee80211_get_mpath,
3893         .dump_mpath = ieee80211_dump_mpath,
3894         .update_mesh_config = ieee80211_update_mesh_config,
3895         .get_mesh_config = ieee80211_get_mesh_config,
3896         .join_mesh = ieee80211_join_mesh,
3897         .leave_mesh = ieee80211_leave_mesh,
3898 #endif
3899         .change_bss = ieee80211_change_bss,
3900         .set_txq_params = ieee80211_set_txq_params,
3901         .set_monitor_channel = ieee80211_set_monitor_channel,
3902         .suspend = ieee80211_suspend,
3903         .resume = ieee80211_resume,
3904         .scan = ieee80211_scan,
3905         .sched_scan_start = ieee80211_sched_scan_start,
3906         .sched_scan_stop = ieee80211_sched_scan_stop,
3907         .auth = ieee80211_auth,
3908         .assoc = ieee80211_assoc,
3909         .deauth = ieee80211_deauth,
3910         .disassoc = ieee80211_disassoc,
3911         .join_ibss = ieee80211_join_ibss,
3912         .leave_ibss = ieee80211_leave_ibss,
3913         .set_mcast_rate = ieee80211_set_mcast_rate,
3914         .set_wiphy_params = ieee80211_set_wiphy_params,
3915         .set_tx_power = ieee80211_set_tx_power,
3916         .get_tx_power = ieee80211_get_tx_power,
3917         .set_wds_peer = ieee80211_set_wds_peer,
3918         .rfkill_poll = ieee80211_rfkill_poll,
3919         CFG80211_TESTMODE_CMD(ieee80211_testmode_cmd)
3920         CFG80211_TESTMODE_DUMP(ieee80211_testmode_dump)
3921         .set_power_mgmt = ieee80211_set_power_mgmt,
3922         .set_bitrate_mask = ieee80211_set_bitrate_mask,
3923         .remain_on_channel = ieee80211_remain_on_channel,
3924         .cancel_remain_on_channel = ieee80211_cancel_remain_on_channel,
3925         .mgmt_tx = ieee80211_mgmt_tx,
3926         .mgmt_tx_cancel_wait = ieee80211_mgmt_tx_cancel_wait,
3927         .set_cqm_rssi_config = ieee80211_set_cqm_rssi_config,
3928         .mgmt_frame_register = ieee80211_mgmt_frame_register,
3929         .set_antenna = ieee80211_set_antenna,
3930         .get_antenna = ieee80211_get_antenna,
3931         .set_ringparam = ieee80211_set_ringparam,
3932         .get_ringparam = ieee80211_get_ringparam,
3933         .set_rekey_data = ieee80211_set_rekey_data,
3934         .tdls_oper = ieee80211_tdls_oper,
3935         .tdls_mgmt = ieee80211_tdls_mgmt,
3936         .probe_client = ieee80211_probe_client,
3937         .set_noack_map = ieee80211_set_noack_map,
3938 #ifdef CONFIG_PM
3939         .set_wakeup = ieee80211_set_wakeup,
3940 #endif
3941         .get_et_sset_count = ieee80211_get_et_sset_count,
3942         .get_et_stats = ieee80211_get_et_stats,
3943         .get_et_strings = ieee80211_get_et_strings,
3944         .get_channel = ieee80211_cfg_get_channel,
3945         .start_radar_detection = ieee80211_start_radar_detection,
3946         .channel_switch = ieee80211_channel_switch,
3947         .set_qos_map = ieee80211_set_qos_map,
3948 };