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