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 sta_info *sta = NULL;
 137         struct ieee80211_key *key;
 138         int err;
 139
 140         if (!ieee80211_sdata_running(sdata))
 141                 return -ENETDOWN;
 142
 143         /* reject WEP and TKIP keys if WEP failed to initialize */
 144         switch (params->cipher) {
 145         case WLAN_CIPHER_SUITE_WEP40:
 146         case WLAN_CIPHER_SUITE_TKIP:
 147         case WLAN_CIPHER_SUITE_WEP104:
 148                 if (IS_ERR(sdata->local->wep_tx_tfm))
 149                         return -EINVAL;
 150                 break;
 151         default:
 152                 break;
 153         }
 154
 155         key = ieee80211_key_alloc(params->cipher, key_idx, params->key_len,
 156                                   params->key, params->seq_len, params->seq);
 157         if (IS_ERR(key))
 158                 return PTR_ERR(key);
 159
 160         if (pairwise)
 161                 key->conf.flags |= IEEE80211_KEY_FLAG_PAIRWISE;
 162
 163         mutex_lock(&sdata->local->sta_mtx);
 164
 165         if (mac_addr) {
 166                 if (ieee80211_vif_is_mesh(&sdata->vif))
 167                         sta = sta_info_get(sdata, mac_addr);
 168                 else
 169                         sta = sta_info_get_bss(sdata, mac_addr);
 170                 /*
 171                  * The ASSOC test makes sure the driver is ready to
 172                  * receive the key. When wpa_supplicant has roamed
 173                  * using FT, it attempts to set the key before
 174                  * association has completed, this rejects that attempt
 175                  * so it will set the key again after assocation.
 176                  *
 177                  * TODO: accept the key if we have a station entry and
 178                  *       add it to the device after the station.
 179                  */
 180                 if (!sta || !test_sta_flag(sta, WLAN_STA_ASSOC)) {
 181                         ieee80211_key_free_unused(key);
 182                         err = -ENOENT;
 183                         goto out_unlock;
 184                 }
 185         }
 186
 187         switch (sdata->vif.type) {
 188         case NL80211_IFTYPE_STATION:
 189                 if (sdata->u.mgd.mfp != IEEE80211_MFP_DISABLED)
 190                         key->conf.flags |= IEEE80211_KEY_FLAG_RX_MGMT;
 191                 break;
 192         case NL80211_IFTYPE_AP:
 193         case NL80211_IFTYPE_AP_VLAN:
 194                 /* Keys without a station are used for TX only */
 195                 if (key->sta && test_sta_flag(key->sta, WLAN_STA_MFP))
 196                         key->conf.flags |= IEEE80211_KEY_FLAG_RX_MGMT;
 197                 break;
 198         case NL80211_IFTYPE_ADHOC:
 199                 /* no MFP (yet) */
 200                 break;
 201         case NL80211_IFTYPE_MESH_POINT:
 202 #ifdef CONFIG_MAC80211_MESH
 203                 if (sdata->u.mesh.security != IEEE80211_MESH_SEC_NONE)
 204                         key->conf.flags |= IEEE80211_KEY_FLAG_RX_MGMT;
 205                 break;
 206 #endif
 207         case NL80211_IFTYPE_WDS:
 208         case NL80211_IFTYPE_MONITOR:
 209         case NL80211_IFTYPE_P2P_DEVICE:
 210         case NL80211_IFTYPE_UNSPECIFIED:
 211         case NUM_NL80211_IFTYPES:
 212         case NL80211_IFTYPE_P2P_CLIENT:
 213         case NL80211_IFTYPE_P2P_GO:
 214                 /* shouldn't happen */
 215                 WARN_ON_ONCE(1);
 216                 break;
 217         }
 218
 219         err = ieee80211_key_link(key, sdata, sta);
 220
 221  out_unlock:
 222         mutex_unlock(&sdata->local->sta_mtx);
 223
 224         return err;
 225 }
 226
 227 static int ieee80211_del_key(struct wiphy *wiphy, struct net_device *dev,
 228                              u8 key_idx, bool pairwise, const u8 *mac_addr)
 229 {
 230         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 231         struct ieee80211_local *local = sdata->local;
 232         struct sta_info *sta;
 233         struct ieee80211_key *key = NULL;
 234         int ret;
 235
 236         mutex_lock(&local->sta_mtx);
 237         mutex_lock(&local->key_mtx);
 238
 239         if (mac_addr) {
 240                 ret = -ENOENT;
 241
 242                 sta = sta_info_get_bss(sdata, mac_addr);
 243                 if (!sta)
 244                         goto out_unlock;
 245
 246                 if (pairwise)
 247                         key = key_mtx_dereference(local, sta->ptk);
 248                 else
 249                         key = key_mtx_dereference(local, sta->gtk[key_idx]);
 250         } else
 251                 key = key_mtx_dereference(local, sdata->keys[key_idx]);
 252
 253         if (!key) {
 254                 ret = -ENOENT;
 255                 goto out_unlock;
 256         }
 257
 258         ieee80211_key_free(key, true);
 259
 260         ret = 0;
 261  out_unlock:
 262         mutex_unlock(&local->key_mtx);
 263         mutex_unlock(&local->sta_mtx);
 264
 265         return ret;
 266 }
 267
 268 static int ieee80211_get_key(struct wiphy *wiphy, struct net_device *dev,
 269                              u8 key_idx, bool pairwise, const u8 *mac_addr,
 270                              void *cookie,
 271                              void (*callback)(void *cookie,
 272                                               struct key_params *params))
 273 {
 274         struct ieee80211_sub_if_data *sdata;
 275         struct sta_info *sta = NULL;
 276         u8 seq[6] = {0};
 277         struct key_params params;
 278         struct ieee80211_key *key = NULL;
 279         u64 pn64;
 280         u32 iv32;
 281         u16 iv16;
 282         int err = -ENOENT;
 283
 284         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 285
 286         rcu_read_lock();
 287
 288         if (mac_addr) {
 289                 sta = sta_info_get_bss(sdata, mac_addr);
 290                 if (!sta)
 291                         goto out;
 292
 293                 if (pairwise)
 294                         key = rcu_dereference(sta->ptk);
 295                 else if (key_idx < NUM_DEFAULT_KEYS)
 296                         key = rcu_dereference(sta->gtk[key_idx]);
 297         } else
 298                 key = rcu_dereference(sdata->keys[key_idx]);
 299
 300         if (!key)
 301                 goto out;
 302
 303         memset(&params, 0, sizeof(params));
 304
 305         params.cipher = key->conf.cipher;
 306
 307         switch (key->conf.cipher) {
 308         case WLAN_CIPHER_SUITE_TKIP:
 309                 iv32 = key->u.tkip.tx.iv32;
 310                 iv16 = key->u.tkip.tx.iv16;
 311
 312                 if (key->flags & KEY_FLAG_UPLOADED_TO_HARDWARE)
 313                         drv_get_tkip_seq(sdata->local,
 314                                          key->conf.hw_key_idx,
 315                                          &iv32, &iv16);
 316
 317                 seq[0] = iv16 & 0xff;
 318                 seq[1] = (iv16 >> 8) & 0xff;
 319                 seq[2] = iv32 & 0xff;
 320                 seq[3] = (iv32 >> 8) & 0xff;
 321                 seq[4] = (iv32 >> 16) & 0xff;
 322                 seq[5] = (iv32 >> 24) & 0xff;
 323                 params.seq = seq;
 324                 params.seq_len = 6;
 325                 break;
 326         case WLAN_CIPHER_SUITE_CCMP:
 327                 pn64 = atomic64_read(&key->u.ccmp.tx_pn);
 328                 seq[0] = pn64;
 329                 seq[1] = pn64 >> 8;
 330                 seq[2] = pn64 >> 16;
 331                 seq[3] = pn64 >> 24;
 332                 seq[4] = pn64 >> 32;
 333                 seq[5] = pn64 >> 40;
 334                 params.seq = seq;
 335                 params.seq_len = 6;
 336                 break;
 337         case WLAN_CIPHER_SUITE_AES_CMAC:
 338                 pn64 = atomic64_read(&key->u.aes_cmac.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         }
 349
 350         params.key = key->conf.key;
 351         params.key_len = key->conf.keylen;
 352
 353         callback(cookie, &params);
 354         err = 0;
 355
 356  out:
 357         rcu_read_unlock();
 358         return err;
 359 }
 360
 361 static int ieee80211_config_default_key(struct wiphy *wiphy,
 362                                         struct net_device *dev,
 363                                         u8 key_idx, bool uni,
 364                                         bool multi)
 365 {
 366         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 367
 368         ieee80211_set_default_key(sdata, key_idx, uni, multi);
 369
 370         return 0;
 371 }
 372
 373 static int ieee80211_config_default_mgmt_key(struct wiphy *wiphy,
 374                                              struct net_device *dev,
 375                                              u8 key_idx)
 376 {
 377         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 378
 379         ieee80211_set_default_mgmt_key(sdata, key_idx);
 380
 381         return 0;
 382 }
 383
 384 void sta_set_rate_info_tx(struct sta_info *sta,
 385                           const struct ieee80211_tx_rate *rate,
 386                           struct rate_info *rinfo)
 387 {
 388         rinfo->flags = 0;
 389         if (rate->flags & IEEE80211_TX_RC_MCS) {
 390                 rinfo->flags |= RATE_INFO_FLAGS_MCS;
 391                 rinfo->mcs = rate->idx;
 392         } else if (rate->flags & IEEE80211_TX_RC_VHT_MCS) {
 393                 rinfo->flags |= RATE_INFO_FLAGS_VHT_MCS;
 394                 rinfo->mcs = ieee80211_rate_get_vht_mcs(rate);
 395                 rinfo->nss = ieee80211_rate_get_vht_nss(rate);
 396         } else {
 397                 struct ieee80211_supported_band *sband;
 398                 int shift = ieee80211_vif_get_shift(&sta->sdata->vif);
 399                 u16 brate;
 400
 401                 sband = sta->local->hw.wiphy->bands[
 402                                 ieee80211_get_sdata_band(sta->sdata)];
 403                 brate = sband->bitrates[rate->idx].bitrate;
 404                 rinfo->legacy = DIV_ROUND_UP(brate, 1 << shift);
 405         }
 406         if (rate->flags & IEEE80211_TX_RC_40_MHZ_WIDTH)
 407                 rinfo->flags |= RATE_INFO_FLAGS_40_MHZ_WIDTH;
 408         if (rate->flags & IEEE80211_TX_RC_80_MHZ_WIDTH)
 409                 rinfo->flags |= RATE_INFO_FLAGS_80_MHZ_WIDTH;
 410         if (rate->flags & IEEE80211_TX_RC_160_MHZ_WIDTH)
 411                 rinfo->flags |= RATE_INFO_FLAGS_160_MHZ_WIDTH;
 412         if (rate->flags & IEEE80211_TX_RC_SHORT_GI)
 413                 rinfo->flags |= RATE_INFO_FLAGS_SHORT_GI;
 414 }
 415
 416 void sta_set_rate_info_rx(struct sta_info *sta, struct rate_info *rinfo)
 417 {
 418         rinfo->flags = 0;
 419
 420         if (sta->last_rx_rate_flag & RX_FLAG_HT) {
 421                 rinfo->flags |= RATE_INFO_FLAGS_MCS;
 422                 rinfo->mcs = sta->last_rx_rate_idx;
 423         } else if (sta->last_rx_rate_flag & RX_FLAG_VHT) {
 424                 rinfo->flags |= RATE_INFO_FLAGS_VHT_MCS;
 425                 rinfo->nss = sta->last_rx_rate_vht_nss;
 426                 rinfo->mcs = sta->last_rx_rate_idx;
 427         } else {
 428                 struct ieee80211_supported_band *sband;
 429                 int shift = ieee80211_vif_get_shift(&sta->sdata->vif);
 430                 u16 brate;
 431
 432                 sband = sta->local->hw.wiphy->bands[
 433                                 ieee80211_get_sdata_band(sta->sdata)];
 434                 brate = sband->bitrates[sta->last_rx_rate_idx].bitrate;
 435                 rinfo->legacy = DIV_ROUND_UP(brate, 1 << shift);
 436         }
 437
 438         if (sta->last_rx_rate_flag & RX_FLAG_40MHZ)
 439                 rinfo->flags |= RATE_INFO_FLAGS_40_MHZ_WIDTH;
 440         if (sta->last_rx_rate_flag & RX_FLAG_SHORT_GI)
 441                 rinfo->flags |= RATE_INFO_FLAGS_SHORT_GI;
 442         if (sta->last_rx_rate_flag & RX_FLAG_80MHZ)
 443                 rinfo->flags |= RATE_INFO_FLAGS_80_MHZ_WIDTH;
 444         if (sta->last_rx_rate_flag & RX_FLAG_80P80MHZ)
 445                 rinfo->flags |= RATE_INFO_FLAGS_80P80_MHZ_WIDTH;
 446         if (sta->last_rx_rate_flag & RX_FLAG_160MHZ)
 447                 rinfo->flags |= RATE_INFO_FLAGS_160_MHZ_WIDTH;
 448 }
 449
 450 static void sta_set_sinfo(struct sta_info *sta, struct station_info *sinfo)
 451 {
 452         struct ieee80211_sub_if_data *sdata = sta->sdata;
 453         struct ieee80211_local *local = sdata->local;
 454         struct timespec uptime;
 455         u64 packets = 0;
 456         int i, ac;
 457
 458         sinfo->generation = sdata->local->sta_generation;
 459
 460         sinfo->filled = STATION_INFO_INACTIVE_TIME |
 461                         STATION_INFO_RX_BYTES64 |
 462                         STATION_INFO_TX_BYTES64 |
 463                         STATION_INFO_RX_PACKETS |
 464                         STATION_INFO_TX_PACKETS |
 465                         STATION_INFO_TX_RETRIES |
 466                         STATION_INFO_TX_FAILED |
 467                         STATION_INFO_TX_BITRATE |
 468                         STATION_INFO_RX_BITRATE |
 469                         STATION_INFO_RX_DROP_MISC |
 470                         STATION_INFO_BSS_PARAM |
 471                         STATION_INFO_CONNECTED_TIME |
 472                         STATION_INFO_STA_FLAGS |
 473                         STATION_INFO_BEACON_LOSS_COUNT;
 474
 475         do_posix_clock_monotonic_gettime(&uptime);
 476         sinfo->connected_time = uptime.tv_sec - sta->last_connected;
 477
 478         sinfo->inactive_time = jiffies_to_msecs(jiffies - sta->last_rx);
 479         sinfo->tx_bytes = 0;
 480         for (ac = 0; ac < IEEE80211_NUM_ACS; ac++) {
 481                 sinfo->tx_bytes += sta->tx_bytes[ac];
 482                 packets += sta->tx_packets[ac];
 483         }
 484         sinfo->tx_packets = packets;
 485         sinfo->rx_bytes = sta->rx_bytes;
 486         sinfo->rx_packets = sta->rx_packets;
 487         sinfo->tx_retries = sta->tx_retry_count;
 488         sinfo->tx_failed = sta->tx_retry_failed;
 489         sinfo->rx_dropped_misc = sta->rx_dropped;
 490         sinfo->beacon_loss_count = sta->beacon_loss_count;
 491
 492         if ((sta->local->hw.flags & IEEE80211_HW_SIGNAL_DBM) ||
 493             (sta->local->hw.flags & IEEE80211_HW_SIGNAL_UNSPEC)) {
 494                 sinfo->filled |= STATION_INFO_SIGNAL | STATION_INFO_SIGNAL_AVG;
 495                 if (!local->ops->get_rssi ||
 496                     drv_get_rssi(local, sdata, &sta->sta, &sinfo->signal))
 497                         sinfo->signal = (s8)sta->last_signal;
 498                 sinfo->signal_avg = (s8) -ewma_read(&sta->avg_signal);
 499         }
 500         if (sta->chains) {
 501                 sinfo->filled |= STATION_INFO_CHAIN_SIGNAL |
 502                                  STATION_INFO_CHAIN_SIGNAL_AVG;
 503
 504                 sinfo->chains = sta->chains;
 505                 for (i = 0; i < ARRAY_SIZE(sinfo->chain_signal); i++) {
 506                         sinfo->chain_signal[i] = sta->chain_signal_last[i];
 507                         sinfo->chain_signal_avg[i] =
 508                                 (s8) -ewma_read(&sta->chain_signal_avg[i]);
 509                 }
 510         }
 511
 512         sta_set_rate_info_tx(sta, &sta->last_tx_rate, &sinfo->txrate);
 513         sta_set_rate_info_rx(sta, &sinfo->rxrate);
 514
 515         if (ieee80211_vif_is_mesh(&sdata->vif)) {
 516 #ifdef CONFIG_MAC80211_MESH
 517                 sinfo->filled |= STATION_INFO_LLID |
 518                                  STATION_INFO_PLID |
 519                                  STATION_INFO_PLINK_STATE |
 520                                  STATION_INFO_LOCAL_PM |
 521                                  STATION_INFO_PEER_PM |
 522                                  STATION_INFO_NONPEER_PM;
 523
 524                 sinfo->llid = le16_to_cpu(sta->llid);
 525                 sinfo->plid = le16_to_cpu(sta->plid);
 526                 sinfo->plink_state = sta->plink_state;
 527                 if (test_sta_flag(sta, WLAN_STA_TOFFSET_KNOWN)) {
 528                         sinfo->filled |= STATION_INFO_T_OFFSET;
 529                         sinfo->t_offset = sta->t_offset;
 530                 }
 531                 sinfo->local_pm = sta->local_pm;
 532                 sinfo->peer_pm = sta->peer_pm;
 533                 sinfo->nonpeer_pm = sta->nonpeer_pm;
 534 #endif
 535         }
 536
 537         sinfo->bss_param.flags = 0;
 538         if (sdata->vif.bss_conf.use_cts_prot)
 539                 sinfo->bss_param.flags |= BSS_PARAM_FLAGS_CTS_PROT;
 540         if (sdata->vif.bss_conf.use_short_preamble)
 541                 sinfo->bss_param.flags |= BSS_PARAM_FLAGS_SHORT_PREAMBLE;
 542         if (sdata->vif.bss_conf.use_short_slot)
 543                 sinfo->bss_param.flags |= BSS_PARAM_FLAGS_SHORT_SLOT_TIME;
 544         sinfo->bss_param.dtim_period = sdata->local->hw.conf.ps_dtim_period;
 545         sinfo->bss_param.beacon_interval = sdata->vif.bss_conf.beacon_int;
 546
 547         sinfo->sta_flags.set = 0;
 548         sinfo->sta_flags.mask = BIT(NL80211_STA_FLAG_AUTHORIZED) |
 549                                 BIT(NL80211_STA_FLAG_SHORT_PREAMBLE) |
 550                                 BIT(NL80211_STA_FLAG_WME) |
 551                                 BIT(NL80211_STA_FLAG_MFP) |
 552                                 BIT(NL80211_STA_FLAG_AUTHENTICATED) |
 553                                 BIT(NL80211_STA_FLAG_ASSOCIATED) |
 554                                 BIT(NL80211_STA_FLAG_TDLS_PEER);
 555         if (test_sta_flag(sta, WLAN_STA_AUTHORIZED))
 556                 sinfo->sta_flags.set |= BIT(NL80211_STA_FLAG_AUTHORIZED);
 557         if (test_sta_flag(sta, WLAN_STA_SHORT_PREAMBLE))
 558                 sinfo->sta_flags.set |= BIT(NL80211_STA_FLAG_SHORT_PREAMBLE);
 559         if (test_sta_flag(sta, WLAN_STA_WME))
 560                 sinfo->sta_flags.set |= BIT(NL80211_STA_FLAG_WME);
 561         if (test_sta_flag(sta, WLAN_STA_MFP))
 562                 sinfo->sta_flags.set |= BIT(NL80211_STA_FLAG_MFP);
 563         if (test_sta_flag(sta, WLAN_STA_AUTH))
 564                 sinfo->sta_flags.set |= BIT(NL80211_STA_FLAG_AUTHENTICATED);
 565         if (test_sta_flag(sta, WLAN_STA_ASSOC))
 566                 sinfo->sta_flags.set |= BIT(NL80211_STA_FLAG_ASSOCIATED);
 567         if (test_sta_flag(sta, WLAN_STA_TDLS_PEER))
 568                 sinfo->sta_flags.set |= BIT(NL80211_STA_FLAG_TDLS_PEER);
 569 }
 570
 571 static const char ieee80211_gstrings_sta_stats[][ETH_GSTRING_LEN] = {
 572         "rx_packets", "rx_bytes", "wep_weak_iv_count",
 573         "rx_duplicates", "rx_fragments", "rx_dropped",
 574         "tx_packets", "tx_bytes", "tx_fragments",
 575         "tx_filtered", "tx_retry_failed", "tx_retries",
 576         "beacon_loss", "sta_state", "txrate", "rxrate", "signal",
 577         "channel", "noise", "ch_time", "ch_time_busy",
 578         "ch_time_ext_busy", "ch_time_rx", "ch_time_tx"
 579 };
 580 #define STA_STATS_LEN   ARRAY_SIZE(ieee80211_gstrings_sta_stats)
 581
 582 static int ieee80211_get_et_sset_count(struct wiphy *wiphy,
 583                                        struct net_device *dev,
 584                                        int sset)
 585 {
 586         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 587         int rv = 0;
 588
 589         if (sset == ETH_SS_STATS)
 590                 rv += STA_STATS_LEN;
 591
 592         rv += drv_get_et_sset_count(sdata, sset);
 593
 594         if (rv == 0)
 595                 return -EOPNOTSUPP;
 596         return rv;
 597 }
 598
 599 static void ieee80211_get_et_stats(struct wiphy *wiphy,
 600                                    struct net_device *dev,
 601                                    struct ethtool_stats *stats,
 602                                    u64 *data)
 603 {
 604         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 605         struct ieee80211_chanctx_conf *chanctx_conf;
 606         struct ieee80211_channel *channel;
 607         struct sta_info *sta;
 608         struct ieee80211_local *local = sdata->local;
 609         struct station_info sinfo;
 610         struct survey_info survey;
 611         int i, q;
 612 #define STA_STATS_SURVEY_LEN 7
 613
 614         memset(data, 0, sizeof(u64) * STA_STATS_LEN);
 615
 616 #define ADD_STA_STATS(sta)                              \
 617         do {                                            \
 618                 data[i++] += sta->rx_packets;           \
 619                 data[i++] += sta->rx_bytes;             \
 620                 data[i++] += sta->wep_weak_iv_count;    \
 621                 data[i++] += sta->num_duplicates;       \
 622                 data[i++] += sta->rx_fragments;         \
 623                 data[i++] += sta->rx_dropped;           \
 624                                                         \
 625                 data[i++] += sinfo.tx_packets;          \
 626                 data[i++] += sinfo.tx_bytes;            \
 627                 data[i++] += sta->tx_fragments;         \
 628                 data[i++] += sta->tx_filtered_count;    \
 629                 data[i++] += sta->tx_retry_failed;      \
 630                 data[i++] += sta->tx_retry_count;       \
 631                 data[i++] += sta->beacon_loss_count;    \
 632         } while (0)
 633
 634         /* For Managed stations, find the single station based on BSSID
 635          * and use that.  For interface types, iterate through all available
 636          * stations and add stats for any station that is assigned to this
 637          * network device.
 638          */
 639
 640         mutex_lock(&local->sta_mtx);
 641
 642         if (sdata->vif.type == NL80211_IFTYPE_STATION) {
 643                 sta = sta_info_get_bss(sdata, sdata->u.mgd.bssid);
 644
 645                 if (!(sta && !WARN_ON(sta->sdata->dev != dev)))
 646                         goto do_survey;
 647
 648                 sinfo.filled = 0;
 649                 sta_set_sinfo(sta, &sinfo);
 650
 651                 i = 0;
 652                 ADD_STA_STATS(sta);
 653
 654                 data[i++] = sta->sta_state;
 655
 656
 657                 if (sinfo.filled & STATION_INFO_TX_BITRATE)
 658                         data[i] = 100000 *
 659                                 cfg80211_calculate_bitrate(&sinfo.txrate);
 660                 i++;
 661                 if (sinfo.filled & STATION_INFO_RX_BITRATE)
 662                         data[i] = 100000 *
 663                                 cfg80211_calculate_bitrate(&sinfo.rxrate);
 664                 i++;
 665
 666                 if (sinfo.filled & STATION_INFO_SIGNAL_AVG)
 667                         data[i] = (u8)sinfo.signal_avg;
 668                 i++;
 669         } else {
 670                 list_for_each_entry(sta, &local->sta_list, list) {
 671                         /* Make sure this station belongs to the proper dev */
 672                         if (sta->sdata->dev != dev)
 673                                 continue;
 674
 675                         i = 0;
 676                         ADD_STA_STATS(sta);
 677                 }
 678         }
 679
 680 do_survey:
 681         i = STA_STATS_LEN - STA_STATS_SURVEY_LEN;
 682         /* Get survey stats for current channel */
 683         survey.filled = 0;
 684
 685         rcu_read_lock();
 686         chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf);
 687         if (chanctx_conf)
 688                 channel = chanctx_conf->def.chan;
 689         else
 690                 channel = NULL;
 691         rcu_read_unlock();
 692
 693         if (channel) {
 694                 q = 0;
 695                 do {
 696                         survey.filled = 0;
 697                         if (drv_get_survey(local, q, &survey) != 0) {
 698                                 survey.filled = 0;
 699                                 break;
 700                         }
 701                         q++;
 702                 } while (channel != survey.channel);
 703         }
 704
 705         if (survey.filled)
 706                 data[i++] = survey.channel->center_freq;
 707         else
 708                 data[i++] = 0;
 709         if (survey.filled & SURVEY_INFO_NOISE_DBM)
 710                 data[i++] = (u8)survey.noise;
 711         else
 712                 data[i++] = -1LL;
 713         if (survey.filled & SURVEY_INFO_CHANNEL_TIME)
 714                 data[i++] = survey.channel_time;
 715         else
 716                 data[i++] = -1LL;
 717         if (survey.filled & SURVEY_INFO_CHANNEL_TIME_BUSY)
 718                 data[i++] = survey.channel_time_busy;
 719         else
 720                 data[i++] = -1LL;
 721         if (survey.filled & SURVEY_INFO_CHANNEL_TIME_EXT_BUSY)
 722                 data[i++] = survey.channel_time_ext_busy;
 723         else
 724                 data[i++] = -1LL;
 725         if (survey.filled & SURVEY_INFO_CHANNEL_TIME_RX)
 726                 data[i++] = survey.channel_time_rx;
 727         else
 728                 data[i++] = -1LL;
 729         if (survey.filled & SURVEY_INFO_CHANNEL_TIME_TX)
 730                 data[i++] = survey.channel_time_tx;
 731         else
 732                 data[i++] = -1LL;
 733
 734         mutex_unlock(&local->sta_mtx);
 735
 736         if (WARN_ON(i != STA_STATS_LEN))
 737                 return;
 738
 739         drv_get_et_stats(sdata, stats, &(data[STA_STATS_LEN]));
 740 }
 741
 742 static void ieee80211_get_et_strings(struct wiphy *wiphy,
 743                                      struct net_device *dev,
 744                                      u32 sset, u8 *data)
 745 {
 746         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 747         int sz_sta_stats = 0;
 748
 749         if (sset == ETH_SS_STATS) {
 750                 sz_sta_stats = sizeof(ieee80211_gstrings_sta_stats);
 751                 memcpy(data, ieee80211_gstrings_sta_stats, sz_sta_stats);
 752         }
 753         drv_get_et_strings(sdata, sset, &(data[sz_sta_stats]));
 754 }
 755
 756 static int ieee80211_dump_station(struct wiphy *wiphy, struct net_device *dev,
 757                                  int idx, u8 *mac, struct station_info *sinfo)
 758 {
 759         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 760         struct ieee80211_local *local = sdata->local;
 761         struct sta_info *sta;
 762         int ret = -ENOENT;
 763
 764         mutex_lock(&local->sta_mtx);
 765
 766         sta = sta_info_get_by_idx(sdata, idx);
 767         if (sta) {
 768                 ret = 0;
 769                 memcpy(mac, sta->sta.addr, ETH_ALEN);
 770                 sta_set_sinfo(sta, sinfo);
 771         }
 772
 773         mutex_unlock(&local->sta_mtx);
 774
 775         return ret;
 776 }
 777
 778 static int ieee80211_dump_survey(struct wiphy *wiphy, struct net_device *dev,
 779                                  int idx, struct survey_info *survey)
 780 {
 781         struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
 782
 783         return drv_get_survey(local, idx, survey);
 784 }
 785
 786 static int ieee80211_get_station(struct wiphy *wiphy, struct net_device *dev,
 787                                  u8 *mac, struct station_info *sinfo)
 788 {
 789         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 790         struct ieee80211_local *local = sdata->local;
 791         struct sta_info *sta;
 792         int ret = -ENOENT;
 793
 794         mutex_lock(&local->sta_mtx);
 795
 796         sta = sta_info_get_bss(sdata, mac);
 797         if (sta) {
 798                 ret = 0;
 799                 sta_set_sinfo(sta, sinfo);
 800         }
 801
 802         mutex_unlock(&local->sta_mtx);
 803
 804         return ret;
 805 }
 806
 807 static int ieee80211_set_monitor_channel(struct wiphy *wiphy,
 808                                          struct cfg80211_chan_def *chandef)
 809 {
 810         struct ieee80211_local *local = wiphy_priv(wiphy);
 811         struct ieee80211_sub_if_data *sdata;
 812         int ret = 0;
 813
 814         if (cfg80211_chandef_identical(&local->monitor_chandef, chandef))
 815                 return 0;
 816
 817         mutex_lock(&local->iflist_mtx);
 818         if (local->use_chanctx) {
 819                 sdata = rcu_dereference_protected(
 820                                 local->monitor_sdata,
 821                                 lockdep_is_held(&local->iflist_mtx));
 822                 if (sdata) {
 823                         ieee80211_vif_release_channel(sdata);
 824                         ret = ieee80211_vif_use_channel(sdata, chandef,
 825                                         IEEE80211_CHANCTX_EXCLUSIVE);
 826                 }
 827         } else if (local->open_count == local->monitors) {
 828                 local->_oper_chandef = *chandef;
 829                 ieee80211_hw_config(local, 0);
 830         }
 831
 832         if (ret == 0)
 833                 local->monitor_chandef = *chandef;
 834         mutex_unlock(&local->iflist_mtx);
 835
 836         return ret;
 837 }
 838
 839 static int ieee80211_set_probe_resp(struct ieee80211_sub_if_data *sdata,
 840                                     const u8 *resp, size_t resp_len)
 841 {
 842         struct probe_resp *new, *old;
 843
 844         if (!resp || !resp_len)
 845                 return 1;
 846
 847         old = rtnl_dereference(sdata->u.ap.probe_resp);
 848
 849         new = kzalloc(sizeof(struct probe_resp) + resp_len, GFP_KERNEL);
 850         if (!new)
 851                 return -ENOMEM;
 852
 853         new->len = resp_len;
 854         memcpy(new->data, resp, resp_len);
 855
 856         rcu_assign_pointer(sdata->u.ap.probe_resp, new);
 857         if (old)
 858                 kfree_rcu(old, rcu_head);
 859
 860         return 0;
 861 }
 862
 863 int ieee80211_assign_beacon(struct ieee80211_sub_if_data *sdata,
 864                             struct cfg80211_beacon_data *params)
 865 {
 866         struct beacon_data *new, *old;
 867         int new_head_len, new_tail_len;
 868         int size, err;
 869         u32 changed = BSS_CHANGED_BEACON;
 870
 871         old = rtnl_dereference(sdata->u.ap.beacon);
 872
 873         /* Need to have a beacon head if we don't have one yet */
 874         if (!params->head && !old)
 875                 return -EINVAL;
 876
 877         /* new or old head? */
 878         if (params->head)
 879                 new_head_len = params->head_len;
 880         else
 881                 new_head_len = old->head_len;
 882
 883         /* new or old tail? */
 884         if (params->tail || !old)
 885                 /* params->tail_len will be zero for !params->tail */
 886                 new_tail_len = params->tail_len;
 887         else
 888                 new_tail_len = old->tail_len;
 889
 890         size = sizeof(*new) + new_head_len + new_tail_len;
 891
 892         new = kzalloc(size, GFP_KERNEL);
 893         if (!new)
 894                 return -ENOMEM;
 895
 896         /* start filling the new info now */
 897
 898         /*
 899          * pointers go into the block we allocated,
 900          * memory is | beacon_data | head | tail |
 901          */
 902         new->head = ((u8 *) new) + sizeof(*new);
 903         new->tail = new->head + new_head_len;
 904         new->head_len = new_head_len;
 905         new->tail_len = new_tail_len;
 906
 907         /* copy in head */
 908         if (params->head)
 909                 memcpy(new->head, params->head, new_head_len);
 910         else
 911                 memcpy(new->head, old->head, new_head_len);
 912
 913         /* copy in optional tail */
 914         if (params->tail)
 915                 memcpy(new->tail, params->tail, new_tail_len);
 916         else
 917                 if (old)
 918                         memcpy(new->tail, old->tail, new_tail_len);
 919
 920         err = ieee80211_set_probe_resp(sdata, params->probe_resp,
 921                                        params->probe_resp_len);
 922         if (err < 0)
 923                 return err;
 924         if (err == 0)
 925                 changed |= BSS_CHANGED_AP_PROBE_RESP;
 926
 927         rcu_assign_pointer(sdata->u.ap.beacon, new);
 928
 929         if (old)
 930                 kfree_rcu(old, rcu_head);
 931
 932         return changed;
 933 }
 934
 935 static int ieee80211_start_ap(struct wiphy *wiphy, struct net_device *dev,
 936                               struct cfg80211_ap_settings *params)
 937 {
 938         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 939         struct beacon_data *old;
 940         struct ieee80211_sub_if_data *vlan;
 941         u32 changed = BSS_CHANGED_BEACON_INT |
 942                       BSS_CHANGED_BEACON_ENABLED |
 943                       BSS_CHANGED_BEACON |
 944                       BSS_CHANGED_SSID |
 945                       BSS_CHANGED_P2P_PS;
 946         int err;
 947
 948         old = rtnl_dereference(sdata->u.ap.beacon);
 949         if (old)
 950                 return -EALREADY;
 951
 952         /* TODO: make hostapd tell us what it wants */
 953         sdata->smps_mode = IEEE80211_SMPS_OFF;
 954         sdata->needed_rx_chains = sdata->local->rx_chains;
 955         sdata->radar_required = params->radar_required;
 956
 957         err = ieee80211_vif_use_channel(sdata, &params->chandef,
 958                                         IEEE80211_CHANCTX_SHARED);
 959         if (err)
 960                 return err;
 961         ieee80211_vif_copy_chanctx_to_vlans(sdata, false);
 962
 963         /*
 964          * Apply control port protocol, this allows us to
 965          * not encrypt dynamic WEP control frames.
 966          */
 967         sdata->control_port_protocol = params->crypto.control_port_ethertype;
 968         sdata->control_port_no_encrypt = params->crypto.control_port_no_encrypt;
 969         list_for_each_entry(vlan, &sdata->u.ap.vlans, u.vlan.list) {
 970                 vlan->control_port_protocol =
 971                         params->crypto.control_port_ethertype;
 972                 vlan->control_port_no_encrypt =
 973                         params->crypto.control_port_no_encrypt;
 974         }
 975
 976         sdata->vif.bss_conf.beacon_int = params->beacon_interval;
 977         sdata->vif.bss_conf.dtim_period = params->dtim_period;
 978         sdata->vif.bss_conf.enable_beacon = true;
 979
 980         sdata->vif.bss_conf.ssid_len = params->ssid_len;
 981         if (params->ssid_len)
 982                 memcpy(sdata->vif.bss_conf.ssid, params->ssid,
 983                        params->ssid_len);
 984         sdata->vif.bss_conf.hidden_ssid =
 985                 (params->hidden_ssid != NL80211_HIDDEN_SSID_NOT_IN_USE);
 986
 987         memset(&sdata->vif.bss_conf.p2p_noa_attr, 0,
 988                sizeof(sdata->vif.bss_conf.p2p_noa_attr));
 989         sdata->vif.bss_conf.p2p_noa_attr.oppps_ctwindow =
 990                 params->p2p_ctwindow & IEEE80211_P2P_OPPPS_CTWINDOW_MASK;
 991         if (params->p2p_opp_ps)
 992                 sdata->vif.bss_conf.p2p_noa_attr.oppps_ctwindow |=
 993                                         IEEE80211_P2P_OPPPS_ENABLE_BIT;
 994
 995         err = ieee80211_assign_beacon(sdata, &params->beacon);
 996         if (err < 0)
 997                 return err;
 998         changed |= err;
 999
1000         err = drv_start_ap(sdata->local, sdata);
1001         if (err) {
1002                 old = rtnl_dereference(sdata->u.ap.beacon);
1003                 if (old)
1004                         kfree_rcu(old, rcu_head);
1005                 RCU_INIT_POINTER(sdata->u.ap.beacon, NULL);
1006                 return err;
1007         }
1008
1009         ieee80211_bss_info_change_notify(sdata, changed);
1010
1011         netif_carrier_on(dev);
1012         list_for_each_entry(vlan, &sdata->u.ap.vlans, u.vlan.list)
1013                 netif_carrier_on(vlan->dev);
1014
1015         return 0;
1016 }
1017
1018 static int ieee80211_change_beacon(struct wiphy *wiphy, struct net_device *dev,
1019                                    struct cfg80211_beacon_data *params)
1020 {
1021         struct ieee80211_sub_if_data *sdata;
1022         struct beacon_data *old;
1023         int err;
1024
1025         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1026
1027         /* don't allow changing the beacon while CSA is in place - offset
1028          * of channel switch counter may change
1029          */
1030         if (sdata->vif.csa_active)
1031                 return -EBUSY;
1032
1033         old = rtnl_dereference(sdata->u.ap.beacon);
1034         if (!old)
1035                 return -ENOENT;
1036
1037         err = ieee80211_assign_beacon(sdata, params);
1038         if (err < 0)
1039                 return err;
1040         ieee80211_bss_info_change_notify(sdata, err);
1041         return 0;
1042 }
1043
1044 static int ieee80211_stop_ap(struct wiphy *wiphy, struct net_device *dev)
1045 {
1046         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1047         struct ieee80211_sub_if_data *vlan;
1048         struct ieee80211_local *local = sdata->local;
1049         struct beacon_data *old_beacon;
1050         struct probe_resp *old_probe_resp;
1051
1052         old_beacon = rtnl_dereference(sdata->u.ap.beacon);
1053         if (!old_beacon)
1054                 return -ENOENT;
1055         old_probe_resp = rtnl_dereference(sdata->u.ap.probe_resp);
1056
1057         /* abort any running channel switch */
1058         sdata->vif.csa_active = false;
1059         cancel_work_sync(&sdata->csa_finalize_work);
1060
1061         /* turn off carrier for this interface and dependent VLANs */
1062         list_for_each_entry(vlan, &sdata->u.ap.vlans, u.vlan.list)
1063                 netif_carrier_off(vlan->dev);
1064         netif_carrier_off(dev);
1065
1066         /* remove beacon and probe response */
1067         RCU_INIT_POINTER(sdata->u.ap.beacon, NULL);
1068         RCU_INIT_POINTER(sdata->u.ap.probe_resp, NULL);
1069         kfree_rcu(old_beacon, rcu_head);
1070         if (old_probe_resp)
1071                 kfree_rcu(old_probe_resp, rcu_head);
1072
1073         list_for_each_entry(vlan, &sdata->u.ap.vlans, u.vlan.list)
1074                 sta_info_flush_defer(vlan);
1075         sta_info_flush_defer(sdata);
1076         synchronize_net();
1077         rcu_barrier();
1078         list_for_each_entry(vlan, &sdata->u.ap.vlans, u.vlan.list) {
1079                 sta_info_flush_cleanup(vlan);
1080                 ieee80211_free_keys(vlan);
1081         }
1082         sta_info_flush_cleanup(sdata);
1083         ieee80211_free_keys(sdata);
1084
1085         sdata->vif.bss_conf.enable_beacon = false;
1086         sdata->vif.bss_conf.ssid_len = 0;
1087         clear_bit(SDATA_STATE_OFFCHANNEL_BEACON_STOPPED, &sdata->state);
1088         ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_BEACON_ENABLED);
1089
1090         if (sdata->wdev.cac_started) {
1091                 cancel_delayed_work_sync(&sdata->dfs_cac_timer_work);
1092                 cfg80211_cac_event(sdata->dev, NL80211_RADAR_CAC_ABORTED,
1093                                    GFP_KERNEL);
1094         }
1095
1096         drv_stop_ap(sdata->local, sdata);
1097
1098         /* free all potentially still buffered bcast frames */
1099         local->total_ps_buffered -= skb_queue_len(&sdata->u.ap.ps.bc_buf);
1100         skb_queue_purge(&sdata->u.ap.ps.bc_buf);
1101
1102         ieee80211_vif_copy_chanctx_to_vlans(sdata, true);
1103         ieee80211_vif_release_channel(sdata);
1104
1105         return 0;
1106 }
1107
1108 /* Layer 2 Update frame (802.2 Type 1 LLC XID Update response) */
1109 struct iapp_layer2_update {
1110         u8 da[ETH_ALEN];        /* broadcast */
1111         u8 sa[ETH_ALEN];        /* STA addr */
1112         __be16 len;             /* 6 */
1113         u8 dsap;                /* 0 */
1114         u8 ssap;                /* 0 */
1115         u8 control;
1116         u8 xid_info[3];
1117 } __packed;
1118
1119 static void ieee80211_send_layer2_update(struct sta_info *sta)
1120 {
1121         struct iapp_layer2_update *msg;
1122         struct sk_buff *skb;
1123
1124         /* Send Level 2 Update Frame to update forwarding tables in layer 2
1125          * bridge devices */
1126
1127         skb = dev_alloc_skb(sizeof(*msg));
1128         if (!skb)
1129                 return;
1130         msg = (struct iapp_layer2_update *)skb_put(skb, sizeof(*msg));
1131
1132         /* 802.2 Type 1 Logical Link Control (LLC) Exchange Identifier (XID)
1133          * Update response frame; IEEE Std 802.2-1998, 5.4.1.2.1 */
1134
1135         eth_broadcast_addr(msg->da);
1136         memcpy(msg->sa, sta->sta.addr, ETH_ALEN);
1137         msg->len = htons(6);
1138         msg->dsap = 0;
1139         msg->ssap = 0x01;       /* NULL LSAP, CR Bit: Response */
1140         msg->control = 0xaf;    /* XID response lsb.1111F101.
1141                                  * F=0 (no poll command; unsolicited frame) */
1142         msg->xid_info[0] = 0x81;        /* XID format identifier */
1143         msg->xid_info[1] = 1;   /* LLC types/classes: Type 1 LLC */
1144         msg->xid_info[2] = 0;   /* XID sender's receive window size (RW) */
1145
1146         skb->dev = sta->sdata->dev;
1147         skb->protocol = eth_type_trans(skb, sta->sdata->dev);
1148         memset(skb->cb, 0, sizeof(skb->cb));
1149         netif_rx_ni(skb);
1150 }
1151
1152 static int sta_apply_auth_flags(struct ieee80211_local *local,
1153                                 struct sta_info *sta,
1154                                 u32 mask, u32 set)
1155 {
1156         int ret;
1157
1158         if (mask & BIT(NL80211_STA_FLAG_AUTHENTICATED) &&
1159             set & BIT(NL80211_STA_FLAG_AUTHENTICATED) &&
1160             !test_sta_flag(sta, WLAN_STA_AUTH)) {
1161                 ret = sta_info_move_state(sta, IEEE80211_STA_AUTH);
1162                 if (ret)
1163                         return ret;
1164         }
1165
1166         if (mask & BIT(NL80211_STA_FLAG_ASSOCIATED) &&
1167             set & BIT(NL80211_STA_FLAG_ASSOCIATED) &&
1168             !test_sta_flag(sta, WLAN_STA_ASSOC)) {
1169                 ret = sta_info_move_state(sta, IEEE80211_STA_ASSOC);
1170                 if (ret)
1171                         return ret;
1172         }
1173
1174         if (mask & BIT(NL80211_STA_FLAG_AUTHORIZED)) {
1175                 if (set & BIT(NL80211_STA_FLAG_AUTHORIZED))
1176                         ret = sta_info_move_state(sta, IEEE80211_STA_AUTHORIZED);
1177                 else if (test_sta_flag(sta, WLAN_STA_AUTHORIZED))
1178                         ret = sta_info_move_state(sta, IEEE80211_STA_ASSOC);
1179                 else
1180                         ret = 0;
1181                 if (ret)
1182                         return ret;
1183         }
1184
1185         if (mask & BIT(NL80211_STA_FLAG_ASSOCIATED) &&
1186             !(set & BIT(NL80211_STA_FLAG_ASSOCIATED)) &&
1187             test_sta_flag(sta, WLAN_STA_ASSOC)) {
1188                 ret = sta_info_move_state(sta, IEEE80211_STA_AUTH);
1189                 if (ret)
1190                         return ret;
1191         }
1192
1193         if (mask & BIT(NL80211_STA_FLAG_AUTHENTICATED) &&
1194             !(set & BIT(NL80211_STA_FLAG_AUTHENTICATED)) &&
1195             test_sta_flag(sta, WLAN_STA_AUTH)) {
1196                 ret = sta_info_move_state(sta, IEEE80211_STA_NONE);
1197                 if (ret)
1198                         return ret;
1199         }
1200
1201         return 0;
1202 }
1203
1204 static int sta_apply_parameters(struct ieee80211_local *local,
1205                                 struct sta_info *sta,
1206                                 struct station_parameters *params)
1207 {
1208         int ret = 0;
1209         struct ieee80211_supported_band *sband;
1210         struct ieee80211_sub_if_data *sdata = sta->sdata;
1211         enum ieee80211_band band = ieee80211_get_sdata_band(sdata);
1212         u32 mask, set;
1213
1214         sband = local->hw.wiphy->bands[band];
1215
1216         mask = params->sta_flags_mask;
1217         set = params->sta_flags_set;
1218
1219         if (ieee80211_vif_is_mesh(&sdata->vif)) {
1220                 /*
1221                  * In mesh mode, ASSOCIATED isn't part of the nl80211
1222                  * API but must follow AUTHENTICATED for driver state.
1223                  */
1224                 if (mask & BIT(NL80211_STA_FLAG_AUTHENTICATED))
1225                         mask |= BIT(NL80211_STA_FLAG_ASSOCIATED);
1226                 if (set & BIT(NL80211_STA_FLAG_AUTHENTICATED))
1227                         set |= BIT(NL80211_STA_FLAG_ASSOCIATED);
1228         } else if (test_sta_flag(sta, WLAN_STA_TDLS_PEER)) {
1229                 /*
1230                  * TDLS -- everything follows authorized, but
1231                  * only becoming authorized is possible, not
1232                  * going back
1233                  */
1234                 if (set & BIT(NL80211_STA_FLAG_AUTHORIZED)) {
1235                         set |= BIT(NL80211_STA_FLAG_AUTHENTICATED) |
1236                                BIT(NL80211_STA_FLAG_ASSOCIATED);
1237                         mask |= BIT(NL80211_STA_FLAG_AUTHENTICATED) |
1238                                 BIT(NL80211_STA_FLAG_ASSOCIATED);
1239                 }
1240         }
1241
1242         ret = sta_apply_auth_flags(local, sta, mask, set);
1243         if (ret)
1244                 return ret;
1245
1246         if (mask & BIT(NL80211_STA_FLAG_SHORT_PREAMBLE)) {
1247                 if (set & BIT(NL80211_STA_FLAG_SHORT_PREAMBLE))
1248                         set_sta_flag(sta, WLAN_STA_SHORT_PREAMBLE);
1249                 else
1250                         clear_sta_flag(sta, WLAN_STA_SHORT_PREAMBLE);
1251         }
1252
1253         if (mask & BIT(NL80211_STA_FLAG_WME)) {
1254                 if (set & BIT(NL80211_STA_FLAG_WME)) {
1255                         set_sta_flag(sta, WLAN_STA_WME);
1256                         sta->sta.wme = true;
1257                 } else {
1258                         clear_sta_flag(sta, WLAN_STA_WME);
1259                         sta->sta.wme = false;
1260                 }
1261         }
1262
1263         if (mask & BIT(NL80211_STA_FLAG_MFP)) {
1264                 if (set & BIT(NL80211_STA_FLAG_MFP))
1265                         set_sta_flag(sta, WLAN_STA_MFP);
1266                 else
1267                         clear_sta_flag(sta, WLAN_STA_MFP);
1268         }
1269
1270         if (mask & BIT(NL80211_STA_FLAG_TDLS_PEER)) {
1271                 if (set & BIT(NL80211_STA_FLAG_TDLS_PEER))
1272                         set_sta_flag(sta, WLAN_STA_TDLS_PEER);
1273                 else
1274                         clear_sta_flag(sta, WLAN_STA_TDLS_PEER);
1275         }
1276
1277         if (params->sta_modify_mask & STATION_PARAM_APPLY_UAPSD) {
1278                 sta->sta.uapsd_queues = params->uapsd_queues;
1279                 sta->sta.max_sp = params->max_sp;
1280         }
1281
1282         /*
1283          * cfg80211 validates this (1-2007) and allows setting the AID
1284          * only when creating a new station entry
1285          */
1286         if (params->aid)
1287                 sta->sta.aid = params->aid;
1288
1289         /*
1290          * Some of the following updates would be racy if called on an
1291          * existing station, via ieee80211_change_station(). However,
1292          * all such changes are rejected by cfg80211 except for updates
1293          * changing the supported rates on an existing but not yet used
1294          * TDLS peer.
1295          */
1296
1297         if (params->listen_interval >= 0)
1298                 sta->listen_interval = params->listen_interval;
1299
1300         if (params->supported_rates) {
1301                 ieee80211_parse_bitrates(&sdata->vif.bss_conf.chandef,
1302                                          sband, params->supported_rates,
1303                                          params->supported_rates_len,
1304                                          &sta->sta.supp_rates[band]);
1305         }
1306
1307         if (params->ht_capa)
1308                 ieee80211_ht_cap_ie_to_sta_ht_cap(sdata, sband,
1309                                                   params->ht_capa, sta);
1310
1311         if (params->vht_capa)
1312                 ieee80211_vht_cap_ie_to_sta_vht_cap(sdata, sband,
1313                                                     params->vht_capa, sta);
1314
1315         if (ieee80211_vif_is_mesh(&sdata->vif)) {
1316 #ifdef CONFIG_MAC80211_MESH
1317                 u32 changed = 0;
1318
1319                 if (params->sta_modify_mask & STATION_PARAM_APPLY_PLINK_STATE) {
1320                         switch (params->plink_state) {
1321                         case NL80211_PLINK_ESTAB:
1322                                 if (sta->plink_state != NL80211_PLINK_ESTAB)
1323                                         changed = mesh_plink_inc_estab_count(
1324                                                         sdata);
1325                                 sta->plink_state = params->plink_state;
1326
1327                                 ieee80211_mps_sta_status_update(sta);
1328                                 changed |= ieee80211_mps_set_sta_local_pm(sta,
1329                                               sdata->u.mesh.mshcfg.power_mode);
1330                                 break;
1331                         case NL80211_PLINK_LISTEN:
1332                         case NL80211_PLINK_BLOCKED:
1333                         case NL80211_PLINK_OPN_SNT:
1334                         case NL80211_PLINK_OPN_RCVD:
1335                         case NL80211_PLINK_CNF_RCVD:
1336                         case NL80211_PLINK_HOLDING:
1337                                 if (sta->plink_state == NL80211_PLINK_ESTAB)
1338                                         changed = mesh_plink_dec_estab_count(
1339                                                         sdata);
1340                                 sta->plink_state = params->plink_state;
1341
1342                                 ieee80211_mps_sta_status_update(sta);
1343                                 changed |=
1344                                       ieee80211_mps_local_status_update(sdata);
1345                                 break;
1346                         default:
1347                                 /*  nothing  */
1348                                 break;
1349                         }
1350                 }
1351
1352                 switch (params->plink_action) {
1353                 case NL80211_PLINK_ACTION_NO_ACTION:
1354                         /* nothing */
1355                         break;
1356                 case NL80211_PLINK_ACTION_OPEN:
1357                         changed |= mesh_plink_open(sta);
1358                         break;
1359                 case NL80211_PLINK_ACTION_BLOCK:
1360                         changed |= mesh_plink_block(sta);
1361                         break;
1362                 }
1363
1364                 if (params->local_pm)
1365                         changed |=
1366                               ieee80211_mps_set_sta_local_pm(sta,
1367                                                              params->local_pm);
1368                 ieee80211_bss_info_change_notify(sdata, changed);
1369 #endif
1370         }
1371
1372         return 0;
1373 }
1374
1375 static int ieee80211_add_station(struct wiphy *wiphy, struct net_device *dev,
1376                                  u8 *mac, struct station_parameters *params)
1377 {
1378         struct ieee80211_local *local = wiphy_priv(wiphy);
1379         struct sta_info *sta;
1380         struct ieee80211_sub_if_data *sdata;
1381         int err;
1382         int layer2_update;
1383
1384         if (params->vlan) {
1385                 sdata = IEEE80211_DEV_TO_SUB_IF(params->vlan);
1386
1387                 if (sdata->vif.type != NL80211_IFTYPE_AP_VLAN &&
1388                     sdata->vif.type != NL80211_IFTYPE_AP)
1389                         return -EINVAL;
1390         } else
1391                 sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1392
1393         if (ether_addr_equal(mac, sdata->vif.addr))
1394                 return -EINVAL;
1395
1396         if (is_multicast_ether_addr(mac))
1397                 return -EINVAL;
1398
1399         sta = sta_info_alloc(sdata, mac, GFP_KERNEL);
1400         if (!sta)
1401                 return -ENOMEM;
1402
1403         /*
1404          * defaults -- if userspace wants something else we'll
1405          * change it accordingly in sta_apply_parameters()
1406          */
1407         if (!(params->sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER))) {
1408                 sta_info_pre_move_state(sta, IEEE80211_STA_AUTH);
1409                 sta_info_pre_move_state(sta, IEEE80211_STA_ASSOC);
1410         }
1411
1412         err = sta_apply_parameters(local, sta, params);
1413         if (err) {
1414                 sta_info_free(local, sta);
1415                 return err;
1416         }
1417
1418         /*
1419          * for TDLS, rate control should be initialized only when
1420          * rates are known and station is marked authorized
1421          */
1422         if (!test_sta_flag(sta, WLAN_STA_TDLS_PEER))
1423                 rate_control_rate_init(sta);
1424
1425         layer2_update = sdata->vif.type == NL80211_IFTYPE_AP_VLAN ||
1426                 sdata->vif.type == NL80211_IFTYPE_AP;
1427
1428         err = sta_info_insert_rcu(sta);
1429         if (err) {
1430                 rcu_read_unlock();
1431                 return err;
1432         }
1433
1434         if (layer2_update)
1435                 ieee80211_send_layer2_update(sta);
1436
1437         rcu_read_unlock();
1438
1439         return 0;
1440 }
1441
1442 static int ieee80211_del_station(struct wiphy *wiphy, struct net_device *dev,
1443                                  u8 *mac)
1444 {
1445         struct ieee80211_sub_if_data *sdata;
1446
1447         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1448
1449         if (mac)
1450                 return sta_info_destroy_addr_bss(sdata, mac);
1451
1452         sta_info_flush(sdata);
1453         return 0;
1454 }
1455
1456 static int ieee80211_change_station(struct wiphy *wiphy,
1457                                     struct net_device *dev, u8 *mac,
1458                                     struct station_parameters *params)
1459 {
1460         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1461         struct ieee80211_local *local = wiphy_priv(wiphy);
1462         struct sta_info *sta;
1463         struct ieee80211_sub_if_data *vlansdata;
1464         enum cfg80211_station_type statype;
1465         int err;
1466
1467         mutex_lock(&local->sta_mtx);
1468
1469         sta = sta_info_get_bss(sdata, mac);
1470         if (!sta) {
1471                 err = -ENOENT;
1472                 goto out_err;
1473         }
1474
1475         switch (sdata->vif.type) {
1476         case NL80211_IFTYPE_MESH_POINT:
1477                 if (sdata->u.mesh.user_mpm)
1478                         statype = CFG80211_STA_MESH_PEER_USER;
1479                 else
1480                         statype = CFG80211_STA_MESH_PEER_KERNEL;
1481                 break;
1482         case NL80211_IFTYPE_ADHOC:
1483                 statype = CFG80211_STA_IBSS;
1484                 break;
1485         case NL80211_IFTYPE_STATION:
1486                 if (!test_sta_flag(sta, WLAN_STA_TDLS_PEER)) {
1487                         statype = CFG80211_STA_AP_STA;
1488                         break;
1489                 }
1490                 if (test_sta_flag(sta, WLAN_STA_AUTHORIZED))
1491                         statype = CFG80211_STA_TDLS_PEER_ACTIVE;
1492                 else
1493                         statype = CFG80211_STA_TDLS_PEER_SETUP;
1494                 break;
1495         case NL80211_IFTYPE_AP:
1496         case NL80211_IFTYPE_AP_VLAN:
1497                 statype = CFG80211_STA_AP_CLIENT;
1498                 break;
1499         default:
1500                 err = -EOPNOTSUPP;
1501                 goto out_err;
1502         }
1503
1504         err = cfg80211_check_station_change(wiphy, params, statype);
1505         if (err)
1506                 goto out_err;
1507
1508         if (params->vlan && params->vlan != sta->sdata->dev) {
1509                 bool prev_4addr = false;
1510                 bool new_4addr = false;
1511
1512                 vlansdata = IEEE80211_DEV_TO_SUB_IF(params->vlan);
1513
1514                 if (params->vlan->ieee80211_ptr->use_4addr) {
1515                         if (vlansdata->u.vlan.sta) {
1516                                 err = -EBUSY;
1517                                 goto out_err;
1518                         }
1519
1520                         rcu_assign_pointer(vlansdata->u.vlan.sta, sta);
1521                         new_4addr = true;
1522                 }
1523
1524                 if (sta->sdata->vif.type == NL80211_IFTYPE_AP_VLAN &&
1525                     sta->sdata->u.vlan.sta) {
1526                         rcu_assign_pointer(sta->sdata->u.vlan.sta, NULL);
1527                         prev_4addr = true;
1528                 }
1529
1530                 sta->sdata = vlansdata;
1531
1532                 if (sta->sta_state == IEEE80211_STA_AUTHORIZED &&
1533                     prev_4addr != new_4addr) {
1534                         if (new_4addr)
1535                                 atomic_dec(&sta->sdata->bss->num_mcast_sta);
1536                         else
1537                                 atomic_inc(&sta->sdata->bss->num_mcast_sta);
1538                 }
1539
1540                 ieee80211_send_layer2_update(sta);
1541         }
1542
1543         err = sta_apply_parameters(local, sta, params);
1544         if (err)
1545                 goto out_err;
1546
1547         /* When peer becomes authorized, init rate control as well */
1548         if (test_sta_flag(sta, WLAN_STA_TDLS_PEER) &&
1549             test_sta_flag(sta, WLAN_STA_AUTHORIZED))
1550                 rate_control_rate_init(sta);
1551
1552         mutex_unlock(&local->sta_mtx);
1553
1554         if (sdata->vif.type == NL80211_IFTYPE_STATION &&
1555             params->sta_flags_mask & BIT(NL80211_STA_FLAG_AUTHORIZED)) {
1556                 ieee80211_recalc_ps(local, -1);
1557                 ieee80211_recalc_ps_vif(sdata);
1558         }
1559
1560         return 0;
1561 out_err:
1562         mutex_unlock(&local->sta_mtx);
1563         return err;
1564 }
1565
1566 #ifdef CONFIG_MAC80211_MESH
1567 static int ieee80211_add_mpath(struct wiphy *wiphy, struct net_device *dev,
1568                                  u8 *dst, u8 *next_hop)
1569 {
1570         struct ieee80211_sub_if_data *sdata;
1571         struct mesh_path *mpath;
1572         struct sta_info *sta;
1573
1574         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1575
1576         rcu_read_lock();
1577         sta = sta_info_get(sdata, next_hop);
1578         if (!sta) {
1579                 rcu_read_unlock();
1580                 return -ENOENT;
1581         }
1582
1583         mpath = mesh_path_add(sdata, dst);
1584         if (IS_ERR(mpath)) {
1585                 rcu_read_unlock();
1586                 return PTR_ERR(mpath);
1587         }
1588
1589         mesh_path_fix_nexthop(mpath, sta);
1590
1591         rcu_read_unlock();
1592         return 0;
1593 }
1594
1595 static int ieee80211_del_mpath(struct wiphy *wiphy, struct net_device *dev,
1596                                u8 *dst)
1597 {
1598         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1599
1600         if (dst)
1601                 return mesh_path_del(sdata, dst);
1602
1603         mesh_path_flush_by_iface(sdata);
1604         return 0;
1605 }
1606
1607 static int ieee80211_change_mpath(struct wiphy *wiphy,
1608                                     struct net_device *dev,
1609                                     u8 *dst, u8 *next_hop)
1610 {
1611         struct ieee80211_sub_if_data *sdata;
1612         struct mesh_path *mpath;
1613         struct sta_info *sta;
1614
1615         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1616
1617         rcu_read_lock();
1618
1619         sta = sta_info_get(sdata, next_hop);
1620         if (!sta) {
1621                 rcu_read_unlock();
1622                 return -ENOENT;
1623         }
1624
1625         mpath = mesh_path_lookup(sdata, dst);
1626         if (!mpath) {
1627                 rcu_read_unlock();
1628                 return -ENOENT;
1629         }
1630
1631         mesh_path_fix_nexthop(mpath, sta);
1632
1633         rcu_read_unlock();
1634         return 0;
1635 }
1636
1637 static void mpath_set_pinfo(struct mesh_path *mpath, u8 *next_hop,
1638                             struct mpath_info *pinfo)
1639 {
1640         struct sta_info *next_hop_sta = rcu_dereference(mpath->next_hop);
1641
1642         if (next_hop_sta)
1643                 memcpy(next_hop, next_hop_sta->sta.addr, ETH_ALEN);
1644         else
1645                 memset(next_hop, 0, ETH_ALEN);
1646
1647         memset(pinfo, 0, sizeof(*pinfo));
1648
1649         pinfo->generation = mesh_paths_generation;
1650
1651         pinfo->filled = MPATH_INFO_FRAME_QLEN |
1652                         MPATH_INFO_SN |
1653                         MPATH_INFO_METRIC |
1654                         MPATH_INFO_EXPTIME |
1655                         MPATH_INFO_DISCOVERY_TIMEOUT |
1656                         MPATH_INFO_DISCOVERY_RETRIES |
1657                         MPATH_INFO_FLAGS;
1658
1659         pinfo->frame_qlen = mpath->frame_queue.qlen;
1660         pinfo->sn = mpath->sn;
1661         pinfo->metric = mpath->metric;
1662         if (time_before(jiffies, mpath->exp_time))
1663                 pinfo->exptime = jiffies_to_msecs(mpath->exp_time - jiffies);
1664         pinfo->discovery_timeout =
1665                         jiffies_to_msecs(mpath->discovery_timeout);
1666         pinfo->discovery_retries = mpath->discovery_retries;
1667         if (mpath->flags & MESH_PATH_ACTIVE)
1668                 pinfo->flags |= NL80211_MPATH_FLAG_ACTIVE;
1669         if (mpath->flags & MESH_PATH_RESOLVING)
1670                 pinfo->flags |= NL80211_MPATH_FLAG_RESOLVING;
1671         if (mpath->flags & MESH_PATH_SN_VALID)
1672                 pinfo->flags |= NL80211_MPATH_FLAG_SN_VALID;
1673         if (mpath->flags & MESH_PATH_FIXED)
1674                 pinfo->flags |= NL80211_MPATH_FLAG_FIXED;
1675         if (mpath->flags & MESH_PATH_RESOLVED)
1676                 pinfo->flags |= NL80211_MPATH_FLAG_RESOLVED;
1677 }
1678
1679 static int ieee80211_get_mpath(struct wiphy *wiphy, struct net_device *dev,
1680                                u8 *dst, u8 *next_hop, struct mpath_info *pinfo)
1681
1682 {
1683         struct ieee80211_sub_if_data *sdata;
1684         struct mesh_path *mpath;
1685
1686         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1687
1688         rcu_read_lock();
1689         mpath = mesh_path_lookup(sdata, dst);
1690         if (!mpath) {
1691                 rcu_read_unlock();
1692                 return -ENOENT;
1693         }
1694         memcpy(dst, mpath->dst, ETH_ALEN);
1695         mpath_set_pinfo(mpath, next_hop, pinfo);
1696         rcu_read_unlock();
1697         return 0;
1698 }
1699
1700 static int ieee80211_dump_mpath(struct wiphy *wiphy, struct net_device *dev,
1701                                  int idx, u8 *dst, u8 *next_hop,
1702                                  struct mpath_info *pinfo)
1703 {
1704         struct ieee80211_sub_if_data *sdata;
1705         struct mesh_path *mpath;
1706
1707         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1708
1709         rcu_read_lock();
1710         mpath = mesh_path_lookup_by_idx(sdata, idx);
1711         if (!mpath) {
1712                 rcu_read_unlock();
1713                 return -ENOENT;
1714         }
1715         memcpy(dst, mpath->dst, ETH_ALEN);
1716         mpath_set_pinfo(mpath, next_hop, pinfo);
1717         rcu_read_unlock();
1718         return 0;
1719 }
1720
1721 static int ieee80211_get_mesh_config(struct wiphy *wiphy,
1722                                 struct net_device *dev,
1723                                 struct mesh_config *conf)
1724 {
1725         struct ieee80211_sub_if_data *sdata;
1726         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1727
1728         memcpy(conf, &(sdata->u.mesh.mshcfg), sizeof(struct mesh_config));
1729         return 0;
1730 }
1731
1732 static inline bool _chg_mesh_attr(enum nl80211_meshconf_params parm, u32 mask)
1733 {
1734         return (mask >> (parm-1)) & 0x1;
1735 }
1736
1737 static int copy_mesh_setup(struct ieee80211_if_mesh *ifmsh,
1738                 const struct mesh_setup *setup)
1739 {
1740         u8 *new_ie;
1741         const u8 *old_ie;
1742         struct ieee80211_sub_if_data *sdata = container_of(ifmsh,
1743                                         struct ieee80211_sub_if_data, u.mesh);
1744
1745         /* allocate information elements */
1746         new_ie = NULL;
1747         old_ie = ifmsh->ie;
1748
1749         if (setup->ie_len) {
1750                 new_ie = kmemdup(setup->ie, setup->ie_len,
1751                                 GFP_KERNEL);
1752                 if (!new_ie)
1753                         return -ENOMEM;
1754         }
1755         ifmsh->ie_len = setup->ie_len;
1756         ifmsh->ie = new_ie;
1757         kfree(old_ie);
1758
1759         /* now copy the rest of the setup parameters */
1760         ifmsh->mesh_id_len = setup->mesh_id_len;
1761         memcpy(ifmsh->mesh_id, setup->mesh_id, ifmsh->mesh_id_len);
1762         ifmsh->mesh_sp_id = setup->sync_method;
1763         ifmsh->mesh_pp_id = setup->path_sel_proto;
1764         ifmsh->mesh_pm_id = setup->path_metric;
1765         ifmsh->user_mpm = setup->user_mpm;
1766         ifmsh->mesh_auth_id = setup->auth_id;
1767         ifmsh->security = IEEE80211_MESH_SEC_NONE;
1768         if (setup->is_authenticated)
1769                 ifmsh->security |= IEEE80211_MESH_SEC_AUTHED;
1770         if (setup->is_secure)
1771                 ifmsh->security |= IEEE80211_MESH_SEC_SECURED;
1772
1773         /* mcast rate setting in Mesh Node */
1774         memcpy(sdata->vif.bss_conf.mcast_rate, setup->mcast_rate,
1775                                                 sizeof(setup->mcast_rate));
1776         sdata->vif.bss_conf.basic_rates = setup->basic_rates;
1777
1778         sdata->vif.bss_conf.beacon_int = setup->beacon_interval;
1779         sdata->vif.bss_conf.dtim_period = setup->dtim_period;
1780
1781         return 0;
1782 }
1783
1784 static int ieee80211_update_mesh_config(struct wiphy *wiphy,
1785                                         struct net_device *dev, u32 mask,
1786                                         const struct mesh_config *nconf)
1787 {
1788         struct mesh_config *conf;
1789         struct ieee80211_sub_if_data *sdata;
1790         struct ieee80211_if_mesh *ifmsh;
1791
1792         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1793         ifmsh = &sdata->u.mesh;
1794
1795         /* Set the config options which we are interested in setting */
1796         conf = &(sdata->u.mesh.mshcfg);
1797         if (_chg_mesh_attr(NL80211_MESHCONF_RETRY_TIMEOUT, mask))
1798                 conf->dot11MeshRetryTimeout = nconf->dot11MeshRetryTimeout;
1799         if (_chg_mesh_attr(NL80211_MESHCONF_CONFIRM_TIMEOUT, mask))
1800                 conf->dot11MeshConfirmTimeout = nconf->dot11MeshConfirmTimeout;
1801         if (_chg_mesh_attr(NL80211_MESHCONF_HOLDING_TIMEOUT, mask))
1802                 conf->dot11MeshHoldingTimeout = nconf->dot11MeshHoldingTimeout;
1803         if (_chg_mesh_attr(NL80211_MESHCONF_MAX_PEER_LINKS, mask))
1804                 conf->dot11MeshMaxPeerLinks = nconf->dot11MeshMaxPeerLinks;
1805         if (_chg_mesh_attr(NL80211_MESHCONF_MAX_RETRIES, mask))
1806                 conf->dot11MeshMaxRetries = nconf->dot11MeshMaxRetries;
1807         if (_chg_mesh_attr(NL80211_MESHCONF_TTL, mask))
1808                 conf->dot11MeshTTL = nconf->dot11MeshTTL;
1809         if (_chg_mesh_attr(NL80211_MESHCONF_ELEMENT_TTL, mask))
1810                 conf->element_ttl = nconf->element_ttl;
1811         if (_chg_mesh_attr(NL80211_MESHCONF_AUTO_OPEN_PLINKS, mask)) {
1812                 if (ifmsh->user_mpm)
1813                         return -EBUSY;
1814                 conf->auto_open_plinks = nconf->auto_open_plinks;
1815         }
1816         if (_chg_mesh_attr(NL80211_MESHCONF_SYNC_OFFSET_MAX_NEIGHBOR, mask))
1817                 conf->dot11MeshNbrOffsetMaxNeighbor =
1818                         nconf->dot11MeshNbrOffsetMaxNeighbor;
1819         if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES, mask))
1820                 conf->dot11MeshHWMPmaxPREQretries =
1821                         nconf->dot11MeshHWMPmaxPREQretries;
1822         if (_chg_mesh_attr(NL80211_MESHCONF_PATH_REFRESH_TIME, mask))
1823                 conf->path_refresh_time = nconf->path_refresh_time;
1824         if (_chg_mesh_attr(NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT, mask))
1825                 conf->min_discovery_timeout = nconf->min_discovery_timeout;
1826         if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT, mask))
1827                 conf->dot11MeshHWMPactivePathTimeout =
1828                         nconf->dot11MeshHWMPactivePathTimeout;
1829         if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL, mask))
1830                 conf->dot11MeshHWMPpreqMinInterval =
1831                         nconf->dot11MeshHWMPpreqMinInterval;
1832         if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_PERR_MIN_INTERVAL, mask))
1833                 conf->dot11MeshHWMPperrMinInterval =
1834                         nconf->dot11MeshHWMPperrMinInterval;
1835         if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME,
1836                            mask))
1837                 conf->dot11MeshHWMPnetDiameterTraversalTime =
1838                         nconf->dot11MeshHWMPnetDiameterTraversalTime;
1839         if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_ROOTMODE, mask)) {
1840                 conf->dot11MeshHWMPRootMode = nconf->dot11MeshHWMPRootMode;
1841                 ieee80211_mesh_root_setup(ifmsh);
1842         }
1843         if (_chg_mesh_attr(NL80211_MESHCONF_GATE_ANNOUNCEMENTS, mask)) {
1844                 /* our current gate announcement implementation rides on root
1845                  * announcements, so require this ifmsh to also be a root node
1846                  * */
1847                 if (nconf->dot11MeshGateAnnouncementProtocol &&
1848                     !(conf->dot11MeshHWMPRootMode > IEEE80211_ROOTMODE_ROOT)) {
1849                         conf->dot11MeshHWMPRootMode = IEEE80211_PROACTIVE_RANN;
1850                         ieee80211_mesh_root_setup(ifmsh);
1851                 }
1852                 conf->dot11MeshGateAnnouncementProtocol =
1853                         nconf->dot11MeshGateAnnouncementProtocol;
1854         }
1855         if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_RANN_INTERVAL, mask))
1856                 conf->dot11MeshHWMPRannInterval =
1857                         nconf->dot11MeshHWMPRannInterval;
1858         if (_chg_mesh_attr(NL80211_MESHCONF_FORWARDING, mask))
1859                 conf->dot11MeshForwarding = nconf->dot11MeshForwarding;
1860         if (_chg_mesh_attr(NL80211_MESHCONF_RSSI_THRESHOLD, mask)) {
1861                 /* our RSSI threshold implementation is supported only for
1862                  * devices that report signal in dBm.
1863                  */
1864                 if (!(sdata->local->hw.flags & IEEE80211_HW_SIGNAL_DBM))
1865                         return -ENOTSUPP;
1866                 conf->rssi_threshold = nconf->rssi_threshold;
1867         }
1868         if (_chg_mesh_attr(NL80211_MESHCONF_HT_OPMODE, mask)) {
1869                 conf->ht_opmode = nconf->ht_opmode;
1870                 sdata->vif.bss_conf.ht_operation_mode = nconf->ht_opmode;
1871                 ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_HT);
1872         }
1873         if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_PATH_TO_ROOT_TIMEOUT, mask))
1874                 conf->dot11MeshHWMPactivePathToRootTimeout =
1875                         nconf->dot11MeshHWMPactivePathToRootTimeout;
1876         if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_ROOT_INTERVAL, mask))
1877                 conf->dot11MeshHWMProotInterval =
1878                         nconf->dot11MeshHWMProotInterval;
1879         if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_CONFIRMATION_INTERVAL, mask))
1880                 conf->dot11MeshHWMPconfirmationInterval =
1881                         nconf->dot11MeshHWMPconfirmationInterval;
1882         if (_chg_mesh_attr(NL80211_MESHCONF_POWER_MODE, mask)) {
1883                 conf->power_mode = nconf->power_mode;
1884                 ieee80211_mps_local_status_update(sdata);
1885         }
1886         if (_chg_mesh_attr(NL80211_MESHCONF_AWAKE_WINDOW, mask))
1887                 conf->dot11MeshAwakeWindowDuration =
1888                         nconf->dot11MeshAwakeWindowDuration;
1889         if (_chg_mesh_attr(NL80211_MESHCONF_PLINK_TIMEOUT, mask))
1890                 conf->plink_timeout = nconf->plink_timeout;
1891         ieee80211_mbss_info_change_notify(sdata, BSS_CHANGED_BEACON);
1892         return 0;
1893 }
1894
1895 static int ieee80211_join_mesh(struct wiphy *wiphy, struct net_device *dev,
1896                                const struct mesh_config *conf,
1897                                const struct mesh_setup *setup)
1898 {
1899         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1900         struct ieee80211_if_mesh *ifmsh = &sdata->u.mesh;
1901         int err;
1902
1903         memcpy(&ifmsh->mshcfg, conf, sizeof(struct mesh_config));
1904         err = copy_mesh_setup(ifmsh, setup);
1905         if (err)
1906                 return err;
1907
1908         /* can mesh use other SMPS modes? */
1909         sdata->smps_mode = IEEE80211_SMPS_OFF;
1910         sdata->needed_rx_chains = sdata->local->rx_chains;
1911
1912         err = ieee80211_vif_use_channel(sdata, &setup->chandef,
1913                                         IEEE80211_CHANCTX_SHARED);
1914         if (err)
1915                 return err;
1916
1917         return ieee80211_start_mesh(sdata);
1918 }
1919
1920 static int ieee80211_leave_mesh(struct wiphy *wiphy, struct net_device *dev)
1921 {
1922         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1923
1924         ieee80211_stop_mesh(sdata);
1925         ieee80211_vif_release_channel(sdata);
1926
1927         return 0;
1928 }
1929 #endif
1930
1931 static int ieee80211_change_bss(struct wiphy *wiphy,
1932                                 struct net_device *dev,
1933                                 struct bss_parameters *params)
1934 {
1935         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1936         enum ieee80211_band band;
1937         u32 changed = 0;
1938
1939         if (!rtnl_dereference(sdata->u.ap.beacon))
1940                 return -ENOENT;
1941
1942         band = ieee80211_get_sdata_band(sdata);
1943
1944         if (params->use_cts_prot >= 0) {
1945                 sdata->vif.bss_conf.use_cts_prot = params->use_cts_prot;
1946                 changed |= BSS_CHANGED_ERP_CTS_PROT;
1947         }
1948         if (params->use_short_preamble >= 0) {
1949                 sdata->vif.bss_conf.use_short_preamble =
1950                         params->use_short_preamble;
1951                 changed |= BSS_CHANGED_ERP_PREAMBLE;
1952         }
1953
1954         if (!sdata->vif.bss_conf.use_short_slot &&
1955             band == IEEE80211_BAND_5GHZ) {
1956                 sdata->vif.bss_conf.use_short_slot = true;
1957                 changed |= BSS_CHANGED_ERP_SLOT;
1958         }
1959
1960         if (params->use_short_slot_time >= 0) {
1961                 sdata->vif.bss_conf.use_short_slot =
1962                         params->use_short_slot_time;
1963                 changed |= BSS_CHANGED_ERP_SLOT;
1964         }
1965
1966         if (params->basic_rates) {
1967                 ieee80211_parse_bitrates(&sdata->vif.bss_conf.chandef,
1968                                          wiphy->bands[band],
1969                                          params->basic_rates,
1970                                          params->basic_rates_len,
1971                                          &sdata->vif.bss_conf.basic_rates);
1972                 changed |= BSS_CHANGED_BASIC_RATES;
1973         }
1974
1975         if (params->ap_isolate >= 0) {
1976                 if (params->ap_isolate)
1977                         sdata->flags |= IEEE80211_SDATA_DONT_BRIDGE_PACKETS;
1978                 else
1979                         sdata->flags &= ~IEEE80211_SDATA_DONT_BRIDGE_PACKETS;
1980         }
1981
1982         if (params->ht_opmode >= 0) {
1983                 sdata->vif.bss_conf.ht_operation_mode =
1984                         (u16) params->ht_opmode;
1985                 changed |= BSS_CHANGED_HT;
1986         }
1987
1988         if (params->p2p_ctwindow >= 0) {
1989                 sdata->vif.bss_conf.p2p_noa_attr.oppps_ctwindow &=
1990                                         ~IEEE80211_P2P_OPPPS_CTWINDOW_MASK;
1991                 sdata->vif.bss_conf.p2p_noa_attr.oppps_ctwindow |=
1992                         params->p2p_ctwindow & IEEE80211_P2P_OPPPS_CTWINDOW_MASK;
1993                 changed |= BSS_CHANGED_P2P_PS;
1994         }
1995
1996         if (params->p2p_opp_ps > 0) {
1997                 sdata->vif.bss_conf.p2p_noa_attr.oppps_ctwindow |=
1998                                         IEEE80211_P2P_OPPPS_ENABLE_BIT;
1999                 changed |= BSS_CHANGED_P2P_PS;
2000         } else if (params->p2p_opp_ps == 0) {
2001                 sdata->vif.bss_conf.p2p_noa_attr.oppps_ctwindow &=
2002                                         ~IEEE80211_P2P_OPPPS_ENABLE_BIT;
2003                 changed |= BSS_CHANGED_P2P_PS;
2004         }
2005
2006         ieee80211_bss_info_change_notify(sdata, changed);
2007
2008         return 0;
2009 }
2010
2011 static int ieee80211_set_txq_params(struct wiphy *wiphy,
2012                                     struct net_device *dev,
2013                                     struct ieee80211_txq_params *params)
2014 {
2015         struct ieee80211_local *local = wiphy_priv(wiphy);
2016         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2017         struct ieee80211_tx_queue_params p;
2018
2019         if (!local->ops->conf_tx)
2020                 return -EOPNOTSUPP;
2021
2022         if (local->hw.queues < IEEE80211_NUM_ACS)
2023                 return -EOPNOTSUPP;
2024
2025         memset(&p, 0, sizeof(p));
2026         p.aifs = params->aifs;
2027         p.cw_max = params->cwmax;
2028         p.cw_min = params->cwmin;
2029         p.txop = params->txop;
2030
2031         /*
2032          * Setting tx queue params disables u-apsd because it's only
2033          * called in master mode.
2034          */
2035         p.uapsd = false;
2036
2037         sdata->tx_conf[params->ac] = p;
2038         if (drv_conf_tx(local, sdata, params->ac, &p)) {
2039                 wiphy_debug(local->hw.wiphy,
2040                             "failed to set TX queue parameters for AC %d\n",
2041                             params->ac);
2042                 return -EINVAL;
2043         }
2044
2045         ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_QOS);
2046
2047         return 0;
2048 }
2049
2050 #ifdef CONFIG_PM
2051 static int ieee80211_suspend(struct wiphy *wiphy,
2052                              struct cfg80211_wowlan *wowlan)
2053 {
2054         return __ieee80211_suspend(wiphy_priv(wiphy), wowlan);
2055 }
2056
2057 static int ieee80211_resume(struct wiphy *wiphy)
2058 {
2059         return __ieee80211_resume(wiphy_priv(wiphy));
2060 }
2061 #else
2062 #define ieee80211_suspend NULL
2063 #define ieee80211_resume NULL
2064 #endif
2065
2066 static int ieee80211_scan(struct wiphy *wiphy,
2067                           struct cfg80211_scan_request *req)
2068 {
2069         struct ieee80211_sub_if_data *sdata;
2070
2071         sdata = IEEE80211_WDEV_TO_SUB_IF(req->wdev);
2072
2073         switch (ieee80211_vif_type_p2p(&sdata->vif)) {
2074         case NL80211_IFTYPE_STATION:
2075         case NL80211_IFTYPE_ADHOC:
2076         case NL80211_IFTYPE_MESH_POINT:
2077         case NL80211_IFTYPE_P2P_CLIENT:
2078         case NL80211_IFTYPE_P2P_DEVICE:
2079                 break;
2080         case NL80211_IFTYPE_P2P_GO:
2081                 if (sdata->local->ops->hw_scan)
2082                         break;
2083                 /*
2084                  * FIXME: implement NoA while scanning in software,
2085                  * for now fall through to allow scanning only when
2086                  * beaconing hasn't been configured yet
2087                  */
2088         case NL80211_IFTYPE_AP:
2089                 /*
2090                  * If the scan has been forced (and the driver supports
2091                  * forcing), don't care about being beaconing already.
2092                  * This will create problems to the attached stations (e.g. all
2093                  * the  frames sent while scanning on other channel will be
2094                  * lost)
2095                  */
2096                 if (sdata->u.ap.beacon &&
2097                     (!(wiphy->features & NL80211_FEATURE_AP_SCAN) ||
2098                      !(req->flags & NL80211_SCAN_FLAG_AP)))
2099                         return -EOPNOTSUPP;
2100                 break;
2101         default:
2102                 return -EOPNOTSUPP;
2103         }
2104
2105         return ieee80211_request_scan(sdata, req);
2106 }
2107
2108 static int
2109 ieee80211_sched_scan_start(struct wiphy *wiphy,
2110                            struct net_device *dev,
2111                            struct cfg80211_sched_scan_request *req)
2112 {
2113         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2114
2115         if (!sdata->local->ops->sched_scan_start)
2116                 return -EOPNOTSUPP;
2117
2118         return ieee80211_request_sched_scan_start(sdata, req);
2119 }
2120
2121 static int
2122 ieee80211_sched_scan_stop(struct wiphy *wiphy, struct net_device *dev)
2123 {
2124         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2125
2126         if (!sdata->local->ops->sched_scan_stop)
2127                 return -EOPNOTSUPP;
2128
2129         return ieee80211_request_sched_scan_stop(sdata);
2130 }
2131
2132 static int ieee80211_auth(struct wiphy *wiphy, struct net_device *dev,
2133                           struct cfg80211_auth_request *req)
2134 {
2135         return ieee80211_mgd_auth(IEEE80211_DEV_TO_SUB_IF(dev), req);
2136 }
2137
2138 static int ieee80211_assoc(struct wiphy *wiphy, struct net_device *dev,
2139                            struct cfg80211_assoc_request *req)
2140 {
2141         return ieee80211_mgd_assoc(IEEE80211_DEV_TO_SUB_IF(dev), req);
2142 }
2143
2144 static int ieee80211_deauth(struct wiphy *wiphy, struct net_device *dev,
2145                             struct cfg80211_deauth_request *req)
2146 {
2147         return ieee80211_mgd_deauth(IEEE80211_DEV_TO_SUB_IF(dev), req);
2148 }
2149
2150 static int ieee80211_disassoc(struct wiphy *wiphy, struct net_device *dev,
2151                               struct cfg80211_disassoc_request *req)
2152 {
2153         return ieee80211_mgd_disassoc(IEEE80211_DEV_TO_SUB_IF(dev), req);
2154 }
2155
2156 static int ieee80211_join_ibss(struct wiphy *wiphy, struct net_device *dev,
2157                                struct cfg80211_ibss_params *params)
2158 {
2159         return ieee80211_ibss_join(IEEE80211_DEV_TO_SUB_IF(dev), params);
2160 }
2161
2162 static int ieee80211_leave_ibss(struct wiphy *wiphy, struct net_device *dev)
2163 {
2164         return ieee80211_ibss_leave(IEEE80211_DEV_TO_SUB_IF(dev));
2165 }
2166
2167 static int ieee80211_set_mcast_rate(struct wiphy *wiphy, struct net_device *dev,
2168                                     int rate[IEEE80211_NUM_BANDS])
2169 {
2170         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2171
2172         memcpy(sdata->vif.bss_conf.mcast_rate, rate,
2173                sizeof(int) * IEEE80211_NUM_BANDS);
2174
2175         return 0;
2176 }
2177
2178 static int ieee80211_set_wiphy_params(struct wiphy *wiphy, u32 changed)
2179 {
2180         struct ieee80211_local *local = wiphy_priv(wiphy);
2181         int err;
2182
2183         if (changed & WIPHY_PARAM_FRAG_THRESHOLD) {
2184                 err = drv_set_frag_threshold(local, wiphy->frag_threshold);
2185
2186                 if (err)
2187                         return err;
2188         }
2189
2190         if (changed & WIPHY_PARAM_COVERAGE_CLASS) {
2191                 err = drv_set_coverage_class(local, wiphy->coverage_class);
2192
2193                 if (err)
2194                         return err;
2195         }
2196
2197         if (changed & WIPHY_PARAM_RTS_THRESHOLD) {
2198                 err = drv_set_rts_threshold(local, wiphy->rts_threshold);
2199
2200                 if (err)
2201                         return err;
2202         }
2203
2204         if (changed & WIPHY_PARAM_RETRY_SHORT) {
2205                 if (wiphy->retry_short > IEEE80211_MAX_TX_RETRY)
2206                         return -EINVAL;
2207                 local->hw.conf.short_frame_max_tx_count = wiphy->retry_short;
2208         }
2209         if (changed & WIPHY_PARAM_RETRY_LONG) {
2210                 if (wiphy->retry_long > IEEE80211_MAX_TX_RETRY)
2211                         return -EINVAL;
2212                 local->hw.conf.long_frame_max_tx_count = wiphy->retry_long;
2213         }
2214         if (changed &
2215             (WIPHY_PARAM_RETRY_SHORT | WIPHY_PARAM_RETRY_LONG))
2216                 ieee80211_hw_config(local, IEEE80211_CONF_CHANGE_RETRY_LIMITS);
2217
2218         return 0;
2219 }
2220
2221 static int ieee80211_set_tx_power(struct wiphy *wiphy,
2222                                   struct wireless_dev *wdev,
2223                                   enum nl80211_tx_power_setting type, int mbm)
2224 {
2225         struct ieee80211_local *local = wiphy_priv(wiphy);
2226         struct ieee80211_sub_if_data *sdata;
2227
2228         if (wdev) {
2229                 sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
2230
2231                 switch (type) {
2232                 case NL80211_TX_POWER_AUTOMATIC:
2233                         sdata->user_power_level = IEEE80211_UNSET_POWER_LEVEL;
2234                         break;
2235                 case NL80211_TX_POWER_LIMITED:
2236                 case NL80211_TX_POWER_FIXED:
2237                         if (mbm < 0 || (mbm % 100))
2238                                 return -EOPNOTSUPP;
2239                         sdata->user_power_level = MBM_TO_DBM(mbm);
2240                         break;
2241                 }
2242
2243                 ieee80211_recalc_txpower(sdata);
2244
2245                 return 0;
2246         }
2247
2248         switch (type) {
2249         case NL80211_TX_POWER_AUTOMATIC:
2250                 local->user_power_level = IEEE80211_UNSET_POWER_LEVEL;
2251                 break;
2252         case NL80211_TX_POWER_LIMITED:
2253         case NL80211_TX_POWER_FIXED:
2254                 if (mbm < 0 || (mbm % 100))
2255                         return -EOPNOTSUPP;
2256                 local->user_power_level = MBM_TO_DBM(mbm);
2257                 break;
2258         }
2259
2260         mutex_lock(&local->iflist_mtx);
2261         list_for_each_entry(sdata, &local->interfaces, list)
2262                 sdata->user_power_level = local->user_power_level;
2263         list_for_each_entry(sdata, &local->interfaces, list)
2264                 ieee80211_recalc_txpower(sdata);
2265         mutex_unlock(&local->iflist_mtx);
2266
2267         return 0;
2268 }
2269
2270 static int ieee80211_get_tx_power(struct wiphy *wiphy,
2271                                   struct wireless_dev *wdev,
2272                                   int *dbm)
2273 {
2274         struct ieee80211_local *local = wiphy_priv(wiphy);
2275         struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
2276
2277         if (!local->use_chanctx)
2278                 *dbm = local->hw.conf.power_level;
2279         else
2280                 *dbm = sdata->vif.bss_conf.txpower;
2281
2282         return 0;
2283 }
2284
2285 static int ieee80211_set_wds_peer(struct wiphy *wiphy, struct net_device *dev,
2286                                   const u8 *addr)
2287 {
2288         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2289
2290         memcpy(&sdata->u.wds.remote_addr, addr, ETH_ALEN);
2291
2292         return 0;
2293 }
2294
2295 static void ieee80211_rfkill_poll(struct wiphy *wiphy)
2296 {
2297         struct ieee80211_local *local = wiphy_priv(wiphy);
2298
2299         drv_rfkill_poll(local);
2300 }
2301
2302 #ifdef CONFIG_NL80211_TESTMODE
2303 static int ieee80211_testmode_cmd(struct wiphy *wiphy, void *data, int len)
2304 {
2305         struct ieee80211_local *local = wiphy_priv(wiphy);
2306
2307         if (!local->ops->testmode_cmd)
2308                 return -EOPNOTSUPP;
2309
2310         return local->ops->testmode_cmd(&local->hw, data, len);
2311 }
2312
2313 static int ieee80211_testmode_dump(struct wiphy *wiphy,
2314                                    struct sk_buff *skb,
2315                                    struct netlink_callback *cb,
2316                                    void *data, int len)
2317 {
2318         struct ieee80211_local *local = wiphy_priv(wiphy);
2319
2320         if (!local->ops->testmode_dump)
2321                 return -EOPNOTSUPP;
2322
2323         return local->ops->testmode_dump(&local->hw, skb, cb, data, len);
2324 }
2325 #endif
2326
2327 int __ieee80211_request_smps(struct ieee80211_sub_if_data *sdata,
2328                              enum ieee80211_smps_mode smps_mode)
2329 {
2330         const u8 *ap;
2331         enum ieee80211_smps_mode old_req;
2332         int err;
2333
2334         lockdep_assert_held(&sdata->wdev.mtx);
2335
2336         old_req = sdata->u.mgd.req_smps;
2337         sdata->u.mgd.req_smps = smps_mode;
2338
2339         if (old_req == smps_mode &&
2340             smps_mode != IEEE80211_SMPS_AUTOMATIC)
2341                 return 0;
2342
2343         /*
2344          * If not associated, or current association is not an HT
2345          * association, there's no need to do anything, just store
2346          * the new value until we associate.
2347          */
2348         if (!sdata->u.mgd.associated ||
2349             sdata->vif.bss_conf.chandef.width == NL80211_CHAN_WIDTH_20_NOHT)
2350                 return 0;
2351
2352         ap = sdata->u.mgd.associated->bssid;
2353
2354         if (smps_mode == IEEE80211_SMPS_AUTOMATIC) {
2355                 if (sdata->u.mgd.powersave)
2356                         smps_mode = IEEE80211_SMPS_DYNAMIC;
2357                 else
2358                         smps_mode = IEEE80211_SMPS_OFF;
2359         }
2360
2361         /* send SM PS frame to AP */
2362         err = ieee80211_send_smps_action(sdata, smps_mode,
2363                                          ap, ap);
2364         if (err)
2365                 sdata->u.mgd.req_smps = old_req;
2366
2367         return err;
2368 }
2369
2370 static int ieee80211_set_power_mgmt(struct wiphy *wiphy, struct net_device *dev,
2371                                     bool enabled, int timeout)
2372 {
2373         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2374         struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
2375
2376         if (sdata->vif.type != NL80211_IFTYPE_STATION &&
2377             sdata->vif.type != NL80211_IFTYPE_MESH_POINT)
2378                 return -EOPNOTSUPP;
2379
2380         if (!(local->hw.flags & IEEE80211_HW_SUPPORTS_PS))
2381                 return -EOPNOTSUPP;
2382
2383         if (enabled == sdata->u.mgd.powersave &&
2384             timeout == local->dynamic_ps_forced_timeout)
2385                 return 0;
2386
2387         sdata->u.mgd.powersave = enabled;
2388         local->dynamic_ps_forced_timeout = timeout;
2389
2390         /* no change, but if automatic follow powersave */
2391         sdata_lock(sdata);
2392         __ieee80211_request_smps(sdata, sdata->u.mgd.req_smps);
2393         sdata_unlock(sdata);
2394
2395         if (local->hw.flags & IEEE80211_HW_SUPPORTS_DYNAMIC_PS)
2396                 ieee80211_hw_config(local, IEEE80211_CONF_CHANGE_PS);
2397
2398         ieee80211_recalc_ps(local, -1);
2399         ieee80211_recalc_ps_vif(sdata);
2400
2401         return 0;
2402 }
2403
2404 static int ieee80211_set_cqm_rssi_config(struct wiphy *wiphy,
2405                                          struct net_device *dev,
2406                                          s32 rssi_thold, u32 rssi_hyst)
2407 {
2408         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2409         struct ieee80211_vif *vif = &sdata->vif;
2410         struct ieee80211_bss_conf *bss_conf = &vif->bss_conf;
2411
2412         if (rssi_thold == bss_conf->cqm_rssi_thold &&
2413             rssi_hyst == bss_conf->cqm_rssi_hyst)
2414                 return 0;
2415
2416         bss_conf->cqm_rssi_thold = rssi_thold;
2417         bss_conf->cqm_rssi_hyst = rssi_hyst;
2418
2419         /* tell the driver upon association, unless already associated */
2420         if (sdata->u.mgd.associated &&
2421             sdata->vif.driver_flags & IEEE80211_VIF_SUPPORTS_CQM_RSSI)
2422                 ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_CQM);
2423
2424         return 0;
2425 }
2426
2427 static int ieee80211_set_bitrate_mask(struct wiphy *wiphy,
2428                                       struct net_device *dev,
2429                                       const u8 *addr,
2430                                       const struct cfg80211_bitrate_mask *mask)
2431 {
2432         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2433         struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
2434         int i, ret;
2435
2436         if (!ieee80211_sdata_running(sdata))
2437                 return -ENETDOWN;
2438
2439         if (local->hw.flags & IEEE80211_HW_HAS_RATE_CONTROL) {
2440                 ret = drv_set_bitrate_mask(local, sdata, mask);
2441                 if (ret)
2442                         return ret;
2443         }
2444
2445         for (i = 0; i < IEEE80211_NUM_BANDS; i++) {
2446                 struct ieee80211_supported_band *sband = wiphy->bands[i];
2447                 int j;
2448
2449                 sdata->rc_rateidx_mask[i] = mask->control[i].legacy;
2450                 memcpy(sdata->rc_rateidx_mcs_mask[i], mask->control[i].mcs,
2451                        sizeof(mask->control[i].mcs));
2452
2453                 sdata->rc_has_mcs_mask[i] = false;
2454                 if (!sband)
2455                         continue;
2456
2457                 for (j = 0; j < IEEE80211_HT_MCS_MASK_LEN; j++)
2458                         if (~sdata->rc_rateidx_mcs_mask[i][j]) {
2459                                 sdata->rc_has_mcs_mask[i] = true;
2460                                 break;
2461                         }
2462         }
2463
2464         return 0;
2465 }
2466
2467 static int ieee80211_start_roc_work(struct ieee80211_local *local,
2468                                     struct ieee80211_sub_if_data *sdata,
2469                                     struct ieee80211_channel *channel,
2470                                     unsigned int duration, u64 *cookie,
2471                                     struct sk_buff *txskb,
2472                                     enum ieee80211_roc_type type)
2473 {
2474         struct ieee80211_roc_work *roc, *tmp;
2475         bool queued = false;
2476         int ret;
2477
2478         lockdep_assert_held(&local->mtx);
2479
2480         if (local->use_chanctx && !local->ops->remain_on_channel)
2481                 return -EOPNOTSUPP;
2482
2483         roc = kzalloc(sizeof(*roc), GFP_KERNEL);
2484         if (!roc)
2485                 return -ENOMEM;
2486
2487         roc->chan = channel;
2488         roc->duration = duration;
2489         roc->req_duration = duration;
2490         roc->frame = txskb;
2491         roc->type = type;
2492         roc->mgmt_tx_cookie = (unsigned long)txskb;
2493         roc->sdata = sdata;
2494         INIT_DELAYED_WORK(&roc->work, ieee80211_sw_roc_work);
2495         INIT_LIST_HEAD(&roc->dependents);
2496
2497         /* if there's one pending or we're scanning, queue this one */
2498         if (!list_empty(&local->roc_list) ||
2499             local->scanning || local->radar_detect_enabled)
2500                 goto out_check_combine;
2501
2502         /* if not HW assist, just queue & schedule work */
2503         if (!local->ops->remain_on_channel) {
2504                 ieee80211_queue_delayed_work(&local->hw, &roc->work, 0);
2505                 goto out_queue;
2506         }
2507
2508         /* otherwise actually kick it off here (for error handling) */
2509
2510         /*
2511          * If the duration is zero, then the driver
2512          * wouldn't actually do anything. Set it to
2513          * 10 for now.
2514          *
2515          * TODO: cancel the off-channel operation
2516          *       when we get the SKB's TX status and
2517          *       the wait time was zero before.
2518          */
2519         if (!duration)
2520                 duration = 10;
2521
2522         ret = drv_remain_on_channel(local, sdata, channel, duration, type);
2523         if (ret) {
2524                 kfree(roc);
2525                 return ret;
2526         }
2527
2528         roc->started = true;
2529         goto out_queue;
2530
2531  out_check_combine:
2532         list_for_each_entry(tmp, &local->roc_list, list) {
2533                 if (tmp->chan != channel || tmp->sdata != sdata)
2534                         continue;
2535
2536                 /*
2537                  * Extend this ROC if possible:
2538                  *
2539                  * If it hasn't started yet, just increase the duration
2540                  * and add the new one to the list of dependents.
2541                  * If the type of the new ROC has higher priority, modify the
2542                  * type of the previous one to match that of the new one.
2543                  */
2544                 if (!tmp->started) {
2545                         list_add_tail(&roc->list, &tmp->dependents);
2546                         tmp->duration = max(tmp->duration, roc->duration);
2547                         tmp->type = max(tmp->type, roc->type);
2548                         queued = true;
2549                         break;
2550                 }
2551
2552                 /* If it has already started, it's more difficult ... */
2553                 if (local->ops->remain_on_channel) {
2554                         unsigned long j = jiffies;
2555
2556                         /*
2557                          * In the offloaded ROC case, if it hasn't begun, add
2558                          * this new one to the dependent list to be handled
2559                          * when the master one begins. If it has begun,
2560                          * check that there's still a minimum time left and
2561                          * if so, start this one, transmitting the frame, but
2562                          * add it to the list directly after this one with
2563                          * a reduced time so we'll ask the driver to execute
2564                          * it right after finishing the previous one, in the
2565                          * hope that it'll also be executed right afterwards,
2566                          * effectively extending the old one.
2567                          * If there's no minimum time left, just add it to the
2568                          * normal list.
2569                          * TODO: the ROC type is ignored here, assuming that it
2570                          * is better to immediately use the current ROC.
2571                          */
2572                         if (!tmp->hw_begun) {
2573                                 list_add_tail(&roc->list, &tmp->dependents);
2574                                 queued = true;
2575                                 break;
2576                         }
2577
2578                         if (time_before(j + IEEE80211_ROC_MIN_LEFT,
2579                                         tmp->hw_start_time +
2580                                         msecs_to_jiffies(tmp->duration))) {
2581                                 int new_dur;
2582
2583                                 ieee80211_handle_roc_started(roc);
2584
2585                                 new_dur = roc->duration -
2586                                           jiffies_to_msecs(tmp->hw_start_time +
2587                                                            msecs_to_jiffies(
2588                                                                 tmp->duration) -
2589                                                            j);
2590
2591                                 if (new_dur > 0) {
2592                                         /* add right after tmp */
2593                                         list_add(&roc->list, &tmp->list);
2594                                 } else {
2595                                         list_add_tail(&roc->list,
2596                                                       &tmp->dependents);
2597                                 }
2598                                 queued = true;
2599                         }
2600                 } else if (del_timer_sync(&tmp->work.timer)) {
2601                         unsigned long new_end;
2602
2603                         /*
2604                          * In the software ROC case, cancel the timer, if
2605                          * that fails then the finish work is already
2606                          * queued/pending and thus we queue the new ROC
2607                          * normally, if that succeeds then we can extend
2608                          * the timer duration and TX the frame (if any.)
2609                          */
2610
2611                         list_add_tail(&roc->list, &tmp->dependents);
2612                         queued = true;
2613
2614                         new_end = jiffies + msecs_to_jiffies(roc->duration);
2615
2616                         /* ok, it was started & we canceled timer */
2617                         if (time_after(new_end, tmp->work.timer.expires))
2618                                 mod_timer(&tmp->work.timer, new_end);
2619                         else
2620                                 add_timer(&tmp->work.timer);
2621
2622                         ieee80211_handle_roc_started(roc);
2623                 }
2624                 break;
2625         }
2626
2627  out_queue:
2628         if (!queued)
2629                 list_add_tail(&roc->list, &local->roc_list);
2630
2631         /*
2632          * cookie is either the roc cookie (for normal roc)
2633          * or the SKB (for mgmt TX)
2634          */
2635         if (!txskb) {
2636                 /* local->mtx protects this */
2637                 local->roc_cookie_counter++;
2638                 roc->cookie = local->roc_cookie_counter;
2639                 /* wow, you wrapped 64 bits ... more likely a bug */
2640                 if (WARN_ON(roc->cookie == 0)) {
2641                         roc->cookie = 1;
2642                         local->roc_cookie_counter++;
2643                 }
2644                 *cookie = roc->cookie;
2645         } else {
2646                 *cookie = (unsigned long)txskb;
2647         }
2648
2649         return 0;
2650 }
2651
2652 static int ieee80211_remain_on_channel(struct wiphy *wiphy,
2653                                        struct wireless_dev *wdev,
2654                                        struct ieee80211_channel *chan,
2655                                        unsigned int duration,
2656                                        u64 *cookie)
2657 {
2658         struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
2659         struct ieee80211_local *local = sdata->local;
2660         int ret;
2661
2662         mutex_lock(&local->mtx);
2663         ret = ieee80211_start_roc_work(local, sdata, chan,
2664                                        duration, cookie, NULL,
2665                                        IEEE80211_ROC_TYPE_NORMAL);
2666         mutex_unlock(&local->mtx);
2667
2668         return ret;
2669 }
2670
2671 static int ieee80211_cancel_roc(struct ieee80211_local *local,
2672                                 u64 cookie, bool mgmt_tx)
2673 {
2674         struct ieee80211_roc_work *roc, *tmp, *found = NULL;
2675         int ret;
2676
2677         mutex_lock(&local->mtx);
2678         list_for_each_entry_safe(roc, tmp, &local->roc_list, list) {
2679                 struct ieee80211_roc_work *dep, *tmp2;
2680
2681                 list_for_each_entry_safe(dep, tmp2, &roc->dependents, list) {
2682                         if (!mgmt_tx && dep->cookie != cookie)
2683                                 continue;
2684                         else if (mgmt_tx && dep->mgmt_tx_cookie != cookie)
2685                                 continue;
2686                         /* found dependent item -- just remove it */
2687                         list_del(&dep->list);
2688                         mutex_unlock(&local->mtx);
2689
2690                         ieee80211_roc_notify_destroy(dep, true);
2691                         return 0;
2692                 }
2693
2694                 if (!mgmt_tx && roc->cookie != cookie)
2695                         continue;
2696                 else if (mgmt_tx && roc->mgmt_tx_cookie != cookie)
2697                         continue;
2698
2699                 found = roc;
2700                 break;
2701         }
2702
2703         if (!found) {
2704                 mutex_unlock(&local->mtx);
2705                 return -ENOENT;
2706         }
2707
2708         /*
2709          * We found the item to cancel, so do that. Note that it
2710          * may have dependents, which we also cancel (and send
2711          * the expired signal for.) Not doing so would be quite
2712          * tricky here, but we may need to fix it later.
2713          */
2714
2715         if (local->ops->remain_on_channel) {
2716                 if (found->started) {
2717                         ret = drv_cancel_remain_on_channel(local);
2718                         if (WARN_ON_ONCE(ret)) {
2719                                 mutex_unlock(&local->mtx);
2720                                 return ret;
2721                         }
2722                 }
2723
2724                 list_del(&found->list);
2725
2726                 if (found->started)
2727                         ieee80211_start_next_roc(local);
2728                 mutex_unlock(&local->mtx);
2729
2730                 ieee80211_roc_notify_destroy(found, true);
2731         } else {
2732                 /* work may be pending so use it all the time */
2733                 found->abort = true;
2734                 ieee80211_queue_delayed_work(&local->hw, &found->work, 0);
2735
2736                 mutex_unlock(&local->mtx);
2737
2738                 /* work will clean up etc */
2739                 flush_delayed_work(&found->work);
2740                 WARN_ON(!found->to_be_freed);
2741                 kfree(found);
2742         }
2743
2744         return 0;
2745 }
2746
2747 static int ieee80211_cancel_remain_on_channel(struct wiphy *wiphy,
2748                                               struct wireless_dev *wdev,
2749                                               u64 cookie)
2750 {
2751         struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
2752         struct ieee80211_local *local = sdata->local;
2753
2754         return ieee80211_cancel_roc(local, cookie, false);
2755 }
2756
2757 static int ieee80211_start_radar_detection(struct wiphy *wiphy,
2758                                            struct net_device *dev,
2759                                            struct cfg80211_chan_def *chandef)
2760 {
2761         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2762         struct ieee80211_local *local = sdata->local;
2763         unsigned long timeout;
2764         int err;
2765
2766         if (!list_empty(&local->roc_list) || local->scanning)
2767                 return -EBUSY;
2768
2769         /* whatever, but channel contexts should not complain about that one */
2770         sdata->smps_mode = IEEE80211_SMPS_OFF;
2771         sdata->needed_rx_chains = local->rx_chains;
2772         sdata->radar_required = true;
2773
2774         mutex_lock(&local->iflist_mtx);
2775         err = ieee80211_vif_use_channel(sdata, chandef,
2776                                         IEEE80211_CHANCTX_SHARED);
2777         mutex_unlock(&local->iflist_mtx);
2778         if (err)
2779                 return err;
2780
2781         timeout = msecs_to_jiffies(IEEE80211_DFS_MIN_CAC_TIME_MS);
2782         ieee80211_queue_delayed_work(&sdata->local->hw,
2783                                      &sdata->dfs_cac_timer_work, timeout);
2784
2785         return 0;
2786 }
2787
2788 static struct cfg80211_beacon_data *
2789 cfg80211_beacon_dup(struct cfg80211_beacon_data *beacon)
2790 {
2791         struct cfg80211_beacon_data *new_beacon;
2792         u8 *pos;
2793         int len;
2794
2795         len = beacon->head_len + beacon->tail_len + beacon->beacon_ies_len +
2796               beacon->proberesp_ies_len + beacon->assocresp_ies_len +
2797               beacon->probe_resp_len;
2798
2799         new_beacon = kzalloc(sizeof(*new_beacon) + len, GFP_KERNEL);
2800         if (!new_beacon)
2801                 return NULL;
2802
2803         pos = (u8 *)(new_beacon + 1);
2804         if (beacon->head_len) {
2805                 new_beacon->head_len = beacon->head_len;
2806                 new_beacon->head = pos;
2807                 memcpy(pos, beacon->head, beacon->head_len);
2808                 pos += beacon->head_len;
2809         }
2810         if (beacon->tail_len) {
2811                 new_beacon->tail_len = beacon->tail_len;
2812                 new_beacon->tail = pos;
2813                 memcpy(pos, beacon->tail, beacon->tail_len);
2814                 pos += beacon->tail_len;
2815         }
2816         if (beacon->beacon_ies_len) {
2817                 new_beacon->beacon_ies_len = beacon->beacon_ies_len;
2818                 new_beacon->beacon_ies = pos;
2819                 memcpy(pos, beacon->beacon_ies, beacon->beacon_ies_len);
2820                 pos += beacon->beacon_ies_len;
2821         }
2822         if (beacon->proberesp_ies_len) {
2823                 new_beacon->proberesp_ies_len = beacon->proberesp_ies_len;
2824                 new_beacon->proberesp_ies = pos;
2825                 memcpy(pos, beacon->proberesp_ies, beacon->proberesp_ies_len);
2826                 pos += beacon->proberesp_ies_len;
2827         }
2828         if (beacon->assocresp_ies_len) {
2829                 new_beacon->assocresp_ies_len = beacon->assocresp_ies_len;
2830                 new_beacon->assocresp_ies = pos;
2831                 memcpy(pos, beacon->assocresp_ies, beacon->assocresp_ies_len);
2832                 pos += beacon->assocresp_ies_len;
2833         }
2834         if (beacon->probe_resp_len) {
2835                 new_beacon->probe_resp_len = beacon->probe_resp_len;
2836                 beacon->probe_resp = pos;
2837                 memcpy(pos, beacon->probe_resp, beacon->probe_resp_len);
2838                 pos += beacon->probe_resp_len;
2839         }
2840
2841         return new_beacon;
2842 }
2843
2844 void ieee80211_csa_finalize_work(struct work_struct *work)
2845 {
2846         struct ieee80211_sub_if_data *sdata =
2847                 container_of(work, struct ieee80211_sub_if_data,
2848                              csa_finalize_work);
2849         struct ieee80211_local *local = sdata->local;
2850         int err, changed;
2851
2852         if (!ieee80211_sdata_running(sdata))
2853                 return;
2854
2855         if (WARN_ON(sdata->vif.type != NL80211_IFTYPE_AP))
2856                 return;
2857
2858         sdata->radar_required = sdata->csa_radar_required;
2859         err = ieee80211_vif_change_channel(sdata, &local->csa_chandef,
2860                                            &changed);
2861         if (WARN_ON(err < 0))
2862                 return;
2863
2864         err = ieee80211_assign_beacon(sdata, sdata->u.ap.next_beacon);
2865         if (err < 0)
2866                 return;
2867
2868         changed |= err;
2869         kfree(sdata->u.ap.next_beacon);
2870         sdata->u.ap.next_beacon = NULL;
2871         sdata->vif.csa_active = false;
2872
2873         ieee80211_wake_queues_by_reason(&sdata->local->hw,
2874                                         IEEE80211_MAX_QUEUE_MAP,
2875                                         IEEE80211_QUEUE_STOP_REASON_CSA);
2876
2877         ieee80211_bss_info_change_notify(sdata, changed);
2878
2879         cfg80211_ch_switch_notify(sdata->dev, &local->csa_chandef);
2880 }
2881
2882 static int ieee80211_channel_switch(struct wiphy *wiphy, struct net_device *dev,
2883                                     struct cfg80211_csa_settings *params)
2884 {
2885         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2886         struct ieee80211_local *local = sdata->local;
2887         struct ieee80211_chanctx_conf *chanctx_conf;
2888         struct ieee80211_chanctx *chanctx;
2889         int err, num_chanctx;
2890
2891         if (!list_empty(&local->roc_list) || local->scanning)
2892                 return -EBUSY;
2893
2894         if (sdata->wdev.cac_started)
2895                 return -EBUSY;
2896
2897         if (cfg80211_chandef_identical(&params->chandef,
2898                                        &sdata->vif.bss_conf.chandef))
2899                 return -EINVAL;
2900
2901         rcu_read_lock();
2902         chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf);
2903         if (!chanctx_conf) {
2904                 rcu_read_unlock();
2905                 return -EBUSY;
2906         }
2907
2908         /* don't handle for multi-VIF cases */
2909         chanctx = container_of(chanctx_conf, struct ieee80211_chanctx, conf);
2910         if (chanctx->refcount > 1) {
2911                 rcu_read_unlock();
2912                 return -EBUSY;
2913         }
2914         num_chanctx = 0;
2915         list_for_each_entry_rcu(chanctx, &local->chanctx_list, list)
2916                 num_chanctx++;
2917         rcu_read_unlock();
2918
2919         if (num_chanctx > 1)
2920                 return -EBUSY;
2921
2922         /* don't allow another channel switch if one is already active. */
2923         if (sdata->vif.csa_active)
2924                 return -EBUSY;
2925
2926         /* only handle AP for now. */
2927         switch (sdata->vif.type) {
2928         case NL80211_IFTYPE_AP:
2929                 break;
2930         default:
2931                 return -EOPNOTSUPP;
2932         }
2933
2934         sdata->u.ap.next_beacon = cfg80211_beacon_dup(&params->beacon_after);
2935         if (!sdata->u.ap.next_beacon)
2936                 return -ENOMEM;
2937
2938         sdata->csa_counter_offset_beacon = params->counter_offset_beacon;
2939         sdata->csa_counter_offset_presp = params->counter_offset_presp;
2940         sdata->csa_radar_required = params->radar_required;
2941
2942         if (params->block_tx)
2943                 ieee80211_stop_queues_by_reason(&local->hw,
2944                                 IEEE80211_MAX_QUEUE_MAP,
2945                                 IEEE80211_QUEUE_STOP_REASON_CSA);
2946
2947         err = ieee80211_assign_beacon(sdata, &params->beacon_csa);
2948         if (err < 0)
2949                 return err;
2950
2951         local->csa_chandef = params->chandef;
2952         sdata->vif.csa_active = true;
2953
2954         ieee80211_bss_info_change_notify(sdata, err);
2955         drv_channel_switch_beacon(sdata, &params->chandef);
2956
2957         return 0;
2958 }
2959
2960 static int ieee80211_mgmt_tx(struct wiphy *wiphy, struct wireless_dev *wdev,
2961                              struct ieee80211_channel *chan, bool offchan,
2962                              unsigned int wait, const u8 *buf, size_t len,
2963                              bool no_cck, bool dont_wait_for_ack, u64 *cookie)
2964 {
2965         struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
2966         struct ieee80211_local *local = sdata->local;
2967         struct sk_buff *skb;
2968         struct sta_info *sta;
2969         const struct ieee80211_mgmt *mgmt = (void *)buf;
2970         bool need_offchan = false;
2971         u32 flags;
2972         int ret;
2973
2974         if (dont_wait_for_ack)
2975                 flags = IEEE80211_TX_CTL_NO_ACK;
2976         else
2977                 flags = IEEE80211_TX_INTFL_NL80211_FRAME_TX |
2978                         IEEE80211_TX_CTL_REQ_TX_STATUS;
2979
2980         if (no_cck)
2981                 flags |= IEEE80211_TX_CTL_NO_CCK_RATE;
2982
2983         switch (sdata->vif.type) {
2984         case NL80211_IFTYPE_ADHOC:
2985                 if (!sdata->vif.bss_conf.ibss_joined)
2986                         need_offchan = true;
2987                 /* fall through */
2988 #ifdef CONFIG_MAC80211_MESH
2989         case NL80211_IFTYPE_MESH_POINT:
2990                 if (ieee80211_vif_is_mesh(&sdata->vif) &&
2991                     !sdata->u.mesh.mesh_id_len)
2992                         need_offchan = true;
2993                 /* fall through */
2994 #endif
2995         case NL80211_IFTYPE_AP:
2996         case NL80211_IFTYPE_AP_VLAN:
2997         case NL80211_IFTYPE_P2P_GO:
2998                 if (sdata->vif.type != NL80211_IFTYPE_ADHOC &&
2999                     !ieee80211_vif_is_mesh(&sdata->vif) &&
3000                     !rcu_access_pointer(sdata->bss->beacon))
3001                         need_offchan = true;
3002                 if (!ieee80211_is_action(mgmt->frame_control) ||
3003                     mgmt->u.action.category == WLAN_CATEGORY_PUBLIC ||
3004                     mgmt->u.action.category == WLAN_CATEGORY_SELF_PROTECTED)
3005                         break;
3006                 rcu_read_lock();
3007                 sta = sta_info_get(sdata, mgmt->da);
3008                 rcu_read_unlock();
3009                 if (!sta)
3010                         return -ENOLINK;
3011                 break;
3012         case NL80211_IFTYPE_STATION:
3013         case NL80211_IFTYPE_P2P_CLIENT:
3014                 if (!sdata->u.mgd.associated)
3015                         need_offchan = true;
3016                 break;
3017         case NL80211_IFTYPE_P2P_DEVICE:
3018                 need_offchan = true;
3019                 break;
3020         default:
3021                 return -EOPNOTSUPP;
3022         }
3023
3024         /* configurations requiring offchan cannot work if no channel has been
3025          * specified
3026          */
3027         if (need_offchan && !chan)
3028                 return -EINVAL;
3029
3030         mutex_lock(&local->mtx);
3031
3032         /* Check if the operating channel is the requested channel */
3033         if (!need_offchan) {
3034                 struct ieee80211_chanctx_conf *chanctx_conf;
3035
3036                 rcu_read_lock();
3037                 chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf);
3038
3039                 if (chanctx_conf) {
3040                         need_offchan = chan && (chan != chanctx_conf->def.chan);
3041                 } else if (!chan) {
3042                         ret = -EINVAL;
3043                         rcu_read_unlock();
3044                         goto out_unlock;
3045                 } else {
3046                         need_offchan = true;
3047                 }
3048                 rcu_read_unlock();
3049         }
3050
3051         if (need_offchan && !offchan) {
3052                 ret = -EBUSY;
3053                 goto out_unlock;
3054         }
3055
3056         skb = dev_alloc_skb(local->hw.extra_tx_headroom + len);
3057         if (!skb) {
3058                 ret = -ENOMEM;
3059                 goto out_unlock;
3060         }
3061         skb_reserve(skb, local->hw.extra_tx_headroom);
3062
3063         memcpy(skb_put(skb, len), buf, len);
3064
3065         IEEE80211_SKB_CB(skb)->flags = flags;
3066
3067         skb->dev = sdata->dev;
3068
3069         if (!need_offchan) {
3070                 *cookie = (unsigned long) skb;
3071                 ieee80211_tx_skb(sdata, skb);
3072                 ret = 0;
3073                 goto out_unlock;
3074         }
3075
3076         IEEE80211_SKB_CB(skb)->flags |= IEEE80211_TX_CTL_TX_OFFCHAN |
3077                                         IEEE80211_TX_INTFL_OFFCHAN_TX_OK;
3078         if (local->hw.flags & IEEE80211_HW_QUEUE_CONTROL)
3079                 IEEE80211_SKB_CB(skb)->hw_queue =
3080                         local->hw.offchannel_tx_hw_queue;
3081
3082         /* This will handle all kinds of coalescing and immediate TX */
3083         ret = ieee80211_start_roc_work(local, sdata, chan,
3084                                        wait, cookie, skb,
3085                                        IEEE80211_ROC_TYPE_MGMT_TX);
3086         if (ret)
3087                 kfree_skb(skb);
3088  out_unlock:
3089         mutex_unlock(&local->mtx);
3090         return ret;
3091 }
3092
3093 static int ieee80211_mgmt_tx_cancel_wait(struct wiphy *wiphy,
3094                                          struct wireless_dev *wdev,
3095                                          u64 cookie)
3096 {
3097         struct ieee80211_local *local = wiphy_priv(wiphy);
3098
3099         return ieee80211_cancel_roc(local, cookie, true);
3100 }
3101
3102 static void ieee80211_mgmt_frame_register(struct wiphy *wiphy,
3103                                           struct wireless_dev *wdev,
3104                                           u16 frame_type, bool reg)
3105 {
3106         struct ieee80211_local *local = wiphy_priv(wiphy);
3107
3108         switch (frame_type) {
3109         case IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_PROBE_REQ:
3110                 if (reg)
3111                         local->probe_req_reg++;
3112                 else
3113                         local->probe_req_reg--;
3114
3115                 if (!local->open_count)
3116                         break;
3117
3118                 ieee80211_queue_work(&local->hw, &local->reconfig_filter);
3119                 break;
3120         default:
3121                 break;
3122         }
3123 }
3124
3125 static int ieee80211_set_antenna(struct wiphy *wiphy, u32 tx_ant, u32 rx_ant)
3126 {
3127         struct ieee80211_local *local = wiphy_priv(wiphy);
3128
3129         if (local->started)
3130                 return -EOPNOTSUPP;
3131
3132         return drv_set_antenna(local, tx_ant, rx_ant);
3133 }
3134
3135 static int ieee80211_get_antenna(struct wiphy *wiphy, u32 *tx_ant, u32 *rx_ant)
3136 {
3137         struct ieee80211_local *local = wiphy_priv(wiphy);
3138
3139         return drv_get_antenna(local, tx_ant, rx_ant);
3140 }
3141
3142 static int ieee80211_set_ringparam(struct wiphy *wiphy, u32 tx, u32 rx)
3143 {
3144         struct ieee80211_local *local = wiphy_priv(wiphy);
3145
3146         return drv_set_ringparam(local, tx, rx);
3147 }
3148
3149 static void ieee80211_get_ringparam(struct wiphy *wiphy,
3150                                     u32 *tx, u32 *tx_max, u32 *rx, u32 *rx_max)
3151 {
3152         struct ieee80211_local *local = wiphy_priv(wiphy);
3153
3154         drv_get_ringparam(local, tx, tx_max, rx, rx_max);
3155 }
3156
3157 static int ieee80211_set_rekey_data(struct wiphy *wiphy,
3158                                     struct net_device *dev,
3159                                     struct cfg80211_gtk_rekey_data *data)
3160 {
3161         struct ieee80211_local *local = wiphy_priv(wiphy);
3162         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
3163
3164         if (!local->ops->set_rekey_data)
3165                 return -EOPNOTSUPP;
3166
3167         drv_set_rekey_data(local, sdata, data);
3168
3169         return 0;
3170 }
3171
3172 static void ieee80211_tdls_add_ext_capab(struct sk_buff *skb)
3173 {
3174         u8 *pos = (void *)skb_put(skb, 7);
3175
3176         *pos++ = WLAN_EID_EXT_CAPABILITY;
3177         *pos++ = 5; /* len */
3178         *pos++ = 0x0;
3179         *pos++ = 0x0;
3180         *pos++ = 0x0;
3181         *pos++ = 0x0;
3182         *pos++ = WLAN_EXT_CAPA5_TDLS_ENABLED;
3183 }
3184
3185 static u16 ieee80211_get_tdls_sta_capab(struct ieee80211_sub_if_data *sdata)
3186 {
3187         struct ieee80211_local *local = sdata->local;
3188         u16 capab;
3189
3190         capab = 0;
3191         if (ieee80211_get_sdata_band(sdata) != IEEE80211_BAND_2GHZ)
3192                 return capab;
3193
3194         if (!(local->hw.flags & IEEE80211_HW_2GHZ_SHORT_SLOT_INCAPABLE))
3195                 capab |= WLAN_CAPABILITY_SHORT_SLOT_TIME;
3196         if (!(local->hw.flags & IEEE80211_HW_2GHZ_SHORT_PREAMBLE_INCAPABLE))
3197                 capab |= WLAN_CAPABILITY_SHORT_PREAMBLE;
3198
3199         return capab;
3200 }
3201
3202 static void ieee80211_tdls_add_link_ie(struct sk_buff *skb, u8 *src_addr,
3203                                        u8 *peer, u8 *bssid)
3204 {
3205         struct ieee80211_tdls_lnkie *lnkid;
3206
3207         lnkid = (void *)skb_put(skb, sizeof(struct ieee80211_tdls_lnkie));
3208
3209         lnkid->ie_type = WLAN_EID_LINK_ID;
3210         lnkid->ie_len = sizeof(struct ieee80211_tdls_lnkie) - 2;
3211
3212         memcpy(lnkid->bssid, bssid, ETH_ALEN);
3213         memcpy(lnkid->init_sta, src_addr, ETH_ALEN);
3214         memcpy(lnkid->resp_sta, peer, ETH_ALEN);
3215 }
3216
3217 static int
3218 ieee80211_prep_tdls_encap_data(struct wiphy *wiphy, struct net_device *dev,
3219                                u8 *peer, u8 action_code, u8 dialog_token,
3220                                u16 status_code, struct sk_buff *skb)
3221 {
3222         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
3223         enum ieee80211_band band = ieee80211_get_sdata_band(sdata);
3224         struct ieee80211_tdls_data *tf;
3225
3226         tf = (void *)skb_put(skb, offsetof(struct ieee80211_tdls_data, u));
3227
3228         memcpy(tf->da, peer, ETH_ALEN);
3229         memcpy(tf->sa, sdata->vif.addr, ETH_ALEN);
3230         tf->ether_type = cpu_to_be16(ETH_P_TDLS);
3231         tf->payload_type = WLAN_TDLS_SNAP_RFTYPE;
3232
3233         switch (action_code) {
3234         case WLAN_TDLS_SETUP_REQUEST:
3235                 tf->category = WLAN_CATEGORY_TDLS;
3236                 tf->action_code = WLAN_TDLS_SETUP_REQUEST;
3237
3238                 skb_put(skb, sizeof(tf->u.setup_req));
3239                 tf->u.setup_req.dialog_token = dialog_token;
3240                 tf->u.setup_req.capability =
3241                         cpu_to_le16(ieee80211_get_tdls_sta_capab(sdata));
3242
3243                 ieee80211_add_srates_ie(sdata, skb, false, band);
3244                 ieee80211_add_ext_srates_ie(sdata, skb, false, band);
3245                 ieee80211_tdls_add_ext_capab(skb);
3246                 break;
3247         case WLAN_TDLS_SETUP_RESPONSE:
3248                 tf->category = WLAN_CATEGORY_TDLS;
3249                 tf->action_code = WLAN_TDLS_SETUP_RESPONSE;
3250
3251                 skb_put(skb, sizeof(tf->u.setup_resp));
3252                 tf->u.setup_resp.status_code = cpu_to_le16(status_code);
3253                 tf->u.setup_resp.dialog_token = dialog_token;
3254                 tf->u.setup_resp.capability =
3255                         cpu_to_le16(ieee80211_get_tdls_sta_capab(sdata));
3256
3257                 ieee80211_add_srates_ie(sdata, skb, false, band);
3258                 ieee80211_add_ext_srates_ie(sdata, skb, false, band);
3259                 ieee80211_tdls_add_ext_capab(skb);
3260                 break;
3261         case WLAN_TDLS_SETUP_CONFIRM:
3262                 tf->category = WLAN_CATEGORY_TDLS;
3263                 tf->action_code = WLAN_TDLS_SETUP_CONFIRM;
3264
3265                 skb_put(skb, sizeof(tf->u.setup_cfm));
3266                 tf->u.setup_cfm.status_code = cpu_to_le16(status_code);
3267                 tf->u.setup_cfm.dialog_token = dialog_token;
3268                 break;
3269         case WLAN_TDLS_TEARDOWN:
3270                 tf->category = WLAN_CATEGORY_TDLS;
3271                 tf->action_code = WLAN_TDLS_TEARDOWN;
3272
3273                 skb_put(skb, sizeof(tf->u.teardown));
3274                 tf->u.teardown.reason_code = cpu_to_le16(status_code);
3275                 break;
3276         case WLAN_TDLS_DISCOVERY_REQUEST:
3277                 tf->category = WLAN_CATEGORY_TDLS;
3278                 tf->action_code = WLAN_TDLS_DISCOVERY_REQUEST;
3279
3280                 skb_put(skb, sizeof(tf->u.discover_req));
3281                 tf->u.discover_req.dialog_token = dialog_token;
3282                 break;
3283         default:
3284                 return -EINVAL;
3285         }
3286
3287         return 0;
3288 }
3289
3290 static int
3291 ieee80211_prep_tdls_direct(struct wiphy *wiphy, struct net_device *dev,
3292                            u8 *peer, u8 action_code, u8 dialog_token,
3293                            u16 status_code, struct sk_buff *skb)
3294 {
3295         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
3296         enum ieee80211_band band = ieee80211_get_sdata_band(sdata);
3297         struct ieee80211_mgmt *mgmt;
3298
3299         mgmt = (void *)skb_put(skb, 24);
3300         memset(mgmt, 0, 24);
3301         memcpy(mgmt->da, peer, ETH_ALEN);
3302         memcpy(mgmt->sa, sdata->vif.addr, ETH_ALEN);
3303         memcpy(mgmt->bssid, sdata->u.mgd.bssid, ETH_ALEN);
3304
3305         mgmt->frame_control = cpu_to_le16(IEEE80211_FTYPE_MGMT |
3306                                           IEEE80211_STYPE_ACTION);
3307
3308         switch (action_code) {
3309         case WLAN_PUB_ACTION_TDLS_DISCOVER_RES:
3310                 skb_put(skb, 1 + sizeof(mgmt->u.action.u.tdls_discover_resp));
3311                 mgmt->u.action.category = WLAN_CATEGORY_PUBLIC;
3312                 mgmt->u.action.u.tdls_discover_resp.action_code =
3313                         WLAN_PUB_ACTION_TDLS_DISCOVER_RES;
3314                 mgmt->u.action.u.tdls_discover_resp.dialog_token =
3315                         dialog_token;
3316                 mgmt->u.action.u.tdls_discover_resp.capability =
3317                         cpu_to_le16(ieee80211_get_tdls_sta_capab(sdata));
3318
3319                 ieee80211_add_srates_ie(sdata, skb, false, band);
3320                 ieee80211_add_ext_srates_ie(sdata, skb, false, band);
3321                 ieee80211_tdls_add_ext_capab(skb);
3322                 break;
3323         default:
3324                 return -EINVAL;
3325         }
3326
3327         return 0;
3328 }
3329
3330 static int ieee80211_tdls_mgmt(struct wiphy *wiphy, struct net_device *dev,
3331                                u8 *peer, u8 action_code, u8 dialog_token,
3332                                u16 status_code, const u8 *extra_ies,
3333                                size_t extra_ies_len)
3334 {
3335         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
3336         struct ieee80211_local *local = sdata->local;
3337         struct sk_buff *skb = NULL;
3338         bool send_direct;
3339         int ret;
3340
3341         if (!(wiphy->flags & WIPHY_FLAG_SUPPORTS_TDLS))
3342                 return -ENOTSUPP;
3343
3344         /* make sure we are in managed mode, and associated */
3345         if (sdata->vif.type != NL80211_IFTYPE_STATION ||
3346             !sdata->u.mgd.associated)
3347                 return -EINVAL;
3348
3349         tdls_dbg(sdata, "TDLS mgmt action %d peer %pM\n",
3350                  action_code, peer);
3351
3352         skb = dev_alloc_skb(local->hw.extra_tx_headroom +
3353                             max(sizeof(struct ieee80211_mgmt),
3354                                 sizeof(struct ieee80211_tdls_data)) +
3355                             50 + /* supported rates */
3356                             7 + /* ext capab */
3357                             extra_ies_len +
3358                             sizeof(struct ieee80211_tdls_lnkie));
3359         if (!skb)
3360                 return -ENOMEM;
3361
3362         skb_reserve(skb, local->hw.extra_tx_headroom);
3363
3364         switch (action_code) {
3365         case WLAN_TDLS_SETUP_REQUEST:
3366         case WLAN_TDLS_SETUP_RESPONSE:
3367         case WLAN_TDLS_SETUP_CONFIRM:
3368         case WLAN_TDLS_TEARDOWN:
3369         case WLAN_TDLS_DISCOVERY_REQUEST:
3370                 ret = ieee80211_prep_tdls_encap_data(wiphy, dev, peer,
3371                                                      action_code, dialog_token,
3372                                                      status_code, skb);
3373                 send_direct = false;
3374                 break;
3375         case WLAN_PUB_ACTION_TDLS_DISCOVER_RES:
3376                 ret = ieee80211_prep_tdls_direct(wiphy, dev, peer, action_code,
3377                                                  dialog_token, status_code,
3378                                                  skb);
3379                 send_direct = true;
3380                 break;
3381         default:
3382                 ret = -ENOTSUPP;
3383                 break;
3384         }
3385
3386         if (ret < 0)
3387                 goto fail;
3388
3389         if (extra_ies_len)
3390                 memcpy(skb_put(skb, extra_ies_len), extra_ies, extra_ies_len);
3391
3392         /* the TDLS link IE is always added last */
3393         switch (action_code) {
3394         case WLAN_TDLS_SETUP_REQUEST:
3395         case WLAN_TDLS_SETUP_CONFIRM:
3396         case WLAN_TDLS_TEARDOWN:
3397         case WLAN_TDLS_DISCOVERY_REQUEST:
3398                 /* we are the initiator */
3399                 ieee80211_tdls_add_link_ie(skb, sdata->vif.addr, peer,
3400                                            sdata->u.mgd.bssid);
3401                 break;
3402         case WLAN_TDLS_SETUP_RESPONSE:
3403         case WLAN_PUB_ACTION_TDLS_DISCOVER_RES:
3404                 /* we are the responder */
3405                 ieee80211_tdls_add_link_ie(skb, peer, sdata->vif.addr,
3406                                            sdata->u.mgd.bssid);
3407                 break;
3408         default:
3409                 ret = -ENOTSUPP;
3410                 goto fail;
3411         }
3412
3413         if (send_direct) {
3414                 ieee80211_tx_skb(sdata, skb);
3415                 return 0;
3416         }
3417
3418         /*
3419          * According to 802.11z: Setup req/resp are sent in AC_BK, otherwise
3420          * we should default to AC_VI.
3421          */
3422         switch (action_code) {
3423         case WLAN_TDLS_SETUP_REQUEST:
3424         case WLAN_TDLS_SETUP_RESPONSE:
3425                 skb_set_queue_mapping(skb, IEEE80211_AC_BK);
3426                 skb->priority = 2;
3427                 break;
3428         default:
3429                 skb_set_queue_mapping(skb, IEEE80211_AC_VI);
3430                 skb->priority = 5;
3431                 break;
3432         }
3433
3434         /* disable bottom halves when entering the Tx path */
3435         local_bh_disable();
3436         ret = ieee80211_subif_start_xmit(skb, dev);
3437         local_bh_enable();
3438
3439         return ret;
3440
3441 fail:
3442         dev_kfree_skb(skb);
3443         return ret;
3444 }
3445
3446 static int ieee80211_tdls_oper(struct wiphy *wiphy, struct net_device *dev,
3447                                u8 *peer, enum nl80211_tdls_operation oper)
3448 {
3449         struct sta_info *sta;
3450         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
3451
3452         if (!(wiphy->flags & WIPHY_FLAG_SUPPORTS_TDLS))
3453                 return -ENOTSUPP;
3454
3455         if (sdata->vif.type != NL80211_IFTYPE_STATION)
3456                 return -EINVAL;
3457
3458         tdls_dbg(sdata, "TDLS oper %d peer %pM\n", oper, peer);
3459
3460         switch (oper) {
3461         case NL80211_TDLS_ENABLE_LINK:
3462                 rcu_read_lock();
3463                 sta = sta_info_get(sdata, peer);
3464                 if (!sta) {
3465                         rcu_read_unlock();
3466                         return -ENOLINK;
3467                 }
3468
3469                 set_sta_flag(sta, WLAN_STA_TDLS_PEER_AUTH);
3470                 rcu_read_unlock();
3471                 break;
3472         case NL80211_TDLS_DISABLE_LINK:
3473                 return sta_info_destroy_addr(sdata, peer);
3474         case NL80211_TDLS_TEARDOWN:
3475         case NL80211_TDLS_SETUP:
3476         case NL80211_TDLS_DISCOVERY_REQ:
3477                 /* We don't support in-driver setup/teardown/discovery */
3478                 return -ENOTSUPP;
3479         default:
3480                 return -ENOTSUPP;
3481         }
3482
3483         return 0;
3484 }
3485
3486 static int ieee80211_probe_client(struct wiphy *wiphy, struct net_device *dev,
3487                                   const u8 *peer, u64 *cookie)
3488 {
3489         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
3490         struct ieee80211_local *local = sdata->local;
3491         struct ieee80211_qos_hdr *nullfunc;
3492         struct sk_buff *skb;
3493         int size = sizeof(*nullfunc);
3494         __le16 fc;
3495         bool qos;
3496         struct ieee80211_tx_info *info;
3497         struct sta_info *sta;
3498         struct ieee80211_chanctx_conf *chanctx_conf;
3499         enum ieee80211_band band;
3500
3501         rcu_read_lock();
3502         chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf);
3503         if (WARN_ON(!chanctx_conf)) {
3504                 rcu_read_unlock();
3505                 return -EINVAL;
3506         }
3507         band = chanctx_conf->def.chan->band;
3508         sta = sta_info_get(sdata, peer);
3509         if (sta) {
3510                 qos = test_sta_flag(sta, WLAN_STA_WME);
3511         } else {
3512                 rcu_read_unlock();
3513                 return -ENOLINK;
3514         }
3515
3516         if (qos) {
3517                 fc = cpu_to_le16(IEEE80211_FTYPE_DATA |
3518                                  IEEE80211_STYPE_QOS_NULLFUNC |
3519                                  IEEE80211_FCTL_FROMDS);
3520         } else {
3521                 size -= 2;
3522                 fc = cpu_to_le16(IEEE80211_FTYPE_DATA |
3523                                  IEEE80211_STYPE_NULLFUNC |
3524                                  IEEE80211_FCTL_FROMDS);
3525         }
3526
3527         skb = dev_alloc_skb(local->hw.extra_tx_headroom + size);
3528         if (!skb) {
3529                 rcu_read_unlock();
3530                 return -ENOMEM;
3531         }
3532
3533         skb->dev = dev;
3534
3535         skb_reserve(skb, local->hw.extra_tx_headroom);
3536
3537         nullfunc = (void *) skb_put(skb, size);
3538         nullfunc->frame_control = fc;
3539         nullfunc->duration_id = 0;
3540         memcpy(nullfunc->addr1, sta->sta.addr, ETH_ALEN);
3541         memcpy(nullfunc->addr2, sdata->vif.addr, ETH_ALEN);
3542         memcpy(nullfunc->addr3, sdata->vif.addr, ETH_ALEN);
3543         nullfunc->seq_ctrl = 0;
3544
3545         info = IEEE80211_SKB_CB(skb);
3546
3547         info->flags |= IEEE80211_TX_CTL_REQ_TX_STATUS |
3548                        IEEE80211_TX_INTFL_NL80211_FRAME_TX;
3549
3550         skb_set_queue_mapping(skb, IEEE80211_AC_VO);
3551         skb->priority = 7;
3552         if (qos)
3553                 nullfunc->qos_ctrl = cpu_to_le16(7);
3554
3555         local_bh_disable();
3556         ieee80211_xmit(sdata, skb, band);
3557         local_bh_enable();
3558         rcu_read_unlock();
3559
3560         *cookie = (unsigned long) skb;
3561         return 0;
3562 }
3563
3564 static int ieee80211_cfg_get_channel(struct wiphy *wiphy,
3565                                      struct wireless_dev *wdev,
3566                                      struct cfg80211_chan_def *chandef)
3567 {
3568         struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
3569         struct ieee80211_local *local = wiphy_priv(wiphy);
3570         struct ieee80211_chanctx_conf *chanctx_conf;
3571         int ret = -ENODATA;
3572
3573         rcu_read_lock();
3574         chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf);
3575         if (chanctx_conf) {
3576                 *chandef = chanctx_conf->def;
3577                 ret = 0;
3578         } else if (local->open_count > 0 &&
3579                    local->open_count == local->monitors &&
3580                    sdata->vif.type == NL80211_IFTYPE_MONITOR) {
3581                 if (local->use_chanctx)
3582                         *chandef = local->monitor_chandef;
3583                 else
3584                         *chandef = local->_oper_chandef;
3585                 ret = 0;
3586         }
3587         rcu_read_unlock();
3588
3589         return ret;
3590 }
3591
3592 #ifdef CONFIG_PM
3593 static void ieee80211_set_wakeup(struct wiphy *wiphy, bool enabled)
3594 {
3595         drv_set_wakeup(wiphy_priv(wiphy), enabled);
3596 }
3597 #endif
3598
3599 struct cfg80211_ops mac80211_config_ops = {
3600         .add_virtual_intf = ieee80211_add_iface,
3601         .del_virtual_intf = ieee80211_del_iface,
3602         .change_virtual_intf = ieee80211_change_iface,
3603         .start_p2p_device = ieee80211_start_p2p_device,
3604         .stop_p2p_device = ieee80211_stop_p2p_device,
3605         .add_key = ieee80211_add_key,
3606         .del_key = ieee80211_del_key,
3607         .get_key = ieee80211_get_key,
3608         .set_default_key = ieee80211_config_default_key,
3609         .set_default_mgmt_key = ieee80211_config_default_mgmt_key,
3610         .start_ap = ieee80211_start_ap,
3611         .change_beacon = ieee80211_change_beacon,
3612         .stop_ap = ieee80211_stop_ap,
3613         .add_station = ieee80211_add_station,
3614         .del_station = ieee80211_del_station,
3615         .change_station = ieee80211_change_station,
3616         .get_station = ieee80211_get_station,
3617         .dump_station = ieee80211_dump_station,
3618         .dump_survey = ieee80211_dump_survey,
3619 #ifdef CONFIG_MAC80211_MESH
3620         .add_mpath = ieee80211_add_mpath,
3621         .del_mpath = ieee80211_del_mpath,
3622         .change_mpath = ieee80211_change_mpath,
3623         .get_mpath = ieee80211_get_mpath,
3624         .dump_mpath = ieee80211_dump_mpath,
3625         .update_mesh_config = ieee80211_update_mesh_config,
3626         .get_mesh_config = ieee80211_get_mesh_config,
3627         .join_mesh = ieee80211_join_mesh,
3628         .leave_mesh = ieee80211_leave_mesh,
3629 #endif
3630         .change_bss = ieee80211_change_bss,
3631         .set_txq_params = ieee80211_set_txq_params,
3632         .set_monitor_channel = ieee80211_set_monitor_channel,
3633         .suspend = ieee80211_suspend,
3634         .resume = ieee80211_resume,
3635         .scan = ieee80211_scan,
3636         .sched_scan_start = ieee80211_sched_scan_start,
3637         .sched_scan_stop = ieee80211_sched_scan_stop,
3638         .auth = ieee80211_auth,
3639         .assoc = ieee80211_assoc,
3640         .deauth = ieee80211_deauth,
3641         .disassoc = ieee80211_disassoc,
3642         .join_ibss = ieee80211_join_ibss,
3643         .leave_ibss = ieee80211_leave_ibss,
3644         .set_mcast_rate = ieee80211_set_mcast_rate,
3645         .set_wiphy_params = ieee80211_set_wiphy_params,
3646         .set_tx_power = ieee80211_set_tx_power,
3647         .get_tx_power = ieee80211_get_tx_power,
3648         .set_wds_peer = ieee80211_set_wds_peer,
3649         .rfkill_poll = ieee80211_rfkill_poll,
3650         CFG80211_TESTMODE_CMD(ieee80211_testmode_cmd)
3651         CFG80211_TESTMODE_DUMP(ieee80211_testmode_dump)
3652         .set_power_mgmt = ieee80211_set_power_mgmt,
3653         .set_bitrate_mask = ieee80211_set_bitrate_mask,
3654         .remain_on_channel = ieee80211_remain_on_channel,
3655         .cancel_remain_on_channel = ieee80211_cancel_remain_on_channel,
3656         .mgmt_tx = ieee80211_mgmt_tx,
3657         .mgmt_tx_cancel_wait = ieee80211_mgmt_tx_cancel_wait,
3658         .set_cqm_rssi_config = ieee80211_set_cqm_rssi_config,
3659         .mgmt_frame_register = ieee80211_mgmt_frame_register,
3660         .set_antenna = ieee80211_set_antenna,
3661         .get_antenna = ieee80211_get_antenna,
3662         .set_ringparam = ieee80211_set_ringparam,
3663         .get_ringparam = ieee80211_get_ringparam,
3664         .set_rekey_data = ieee80211_set_rekey_data,
3665         .tdls_oper = ieee80211_tdls_oper,
3666         .tdls_mgmt = ieee80211_tdls_mgmt,
3667         .probe_client = ieee80211_probe_client,
3668         .set_noack_map = ieee80211_set_noack_map,
3669 #ifdef CONFIG_PM
3670         .set_wakeup = ieee80211_set_wakeup,
3671 #endif
3672         .get_et_sset_count = ieee80211_get_et_sset_count,
3673         .get_et_stats = ieee80211_get_et_stats,
3674         .get_et_strings = ieee80211_get_et_strings,
3675         .get_channel = ieee80211_cfg_get_channel,
3676         .start_radar_detection = ieee80211_start_radar_detection,
3677         .channel_switch = ieee80211_channel_switch,
3678 };