cfg.c

   1 /*
   2  * mac80211 configuration hooks for cfg80211
   3  *
   4  * Copyright 2006-2010  Johannes Berg <johannes@sipsolutions.net>
   5  * Copyright 2013-2015  Intel Mobile Communications GmbH
   6  *
   7  * This file is GPLv2 as found in COPYING.
   8  */
   9
  10 #include <linux/ieee80211.h>
  11 #include <linux/nl80211.h>
  12 #include <linux/rtnetlink.h>
  13 #include <linux/slab.h>
  14 #include <net/net_namespace.h>
  15 #include <linux/rcupdate.h>
  16 #include <linux/if_ether.h>
  17 #include <net/cfg80211.h>
  18 #include "ieee80211_i.h"
  19 #include "driver-ops.h"
  20 #include "cfg.h"
  21 #include "rate.h"
  22 #include "mesh.h"
  23 #include "wme.h"
  24
  25 static struct wireless_dev *ieee80211_add_iface(struct wiphy *wiphy,
  26                                                 const char *name,
  27                                                 unsigned char name_assign_type,
  28                                                 enum nl80211_iftype type,
  29                                                 u32 *flags,
  30                                                 struct vif_params *params)
  31 {
  32         struct ieee80211_local *local = wiphy_priv(wiphy);
  33         struct wireless_dev *wdev;
  34         struct ieee80211_sub_if_data *sdata;
  35         int err;
  36
  37         err = ieee80211_if_add(local, name, name_assign_type, &wdev, type, params);
  38         if (err)
  39                 return ERR_PTR(err);
  40
  41         if (type == NL80211_IFTYPE_MONITOR && flags) {
  42                 sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
  43                 sdata->u.mntr_flags = *flags;
  44         }
  45
  46         return wdev;
  47 }
  48
  49 static int ieee80211_del_iface(struct wiphy *wiphy, struct wireless_dev *wdev)
  50 {
  51         ieee80211_if_remove(IEEE80211_WDEV_TO_SUB_IF(wdev));
  52
  53         return 0;
  54 }
  55
  56 static int ieee80211_change_iface(struct wiphy *wiphy,
  57                                   struct net_device *dev,
  58                                   enum nl80211_iftype type, u32 *flags,
  59                                   struct vif_params *params)
  60 {
  61         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
  62         int ret;
  63
  64         ret = ieee80211_if_change_type(sdata, type);
  65         if (ret)
  66                 return ret;
  67
  68         if (type == NL80211_IFTYPE_AP_VLAN &&
  69             params && params->use_4addr == 0)
  70                 RCU_INIT_POINTER(sdata->u.vlan.sta, NULL);
  71         else if (type == NL80211_IFTYPE_STATION &&
  72                  params && params->use_4addr >= 0)
  73                 sdata->u.mgd.use_4addr = params->use_4addr;
  74
  75         if (sdata->vif.type == NL80211_IFTYPE_MONITOR && flags) {
  76                 struct ieee80211_local *local = sdata->local;
  77
  78                 if (ieee80211_sdata_running(sdata)) {
  79                         u32 mask = MONITOR_FLAG_COOK_FRAMES |
  80                                    MONITOR_FLAG_ACTIVE;
  81
  82                         /*
  83                          * Prohibit MONITOR_FLAG_COOK_FRAMES and
  84                          * MONITOR_FLAG_ACTIVE to be changed while the
  85                          * interface is up.
  86                          * Else we would need to add a lot of cruft
  87                          * to update everything:
  88                          *      cooked_mntrs, monitor and all fif_* counters
  89                          *      reconfigure hardware
  90                          */
  91                         if ((*flags & mask) != (sdata->u.mntr_flags & mask))
  92                                 return -EBUSY;
  93
  94                         ieee80211_adjust_monitor_flags(sdata, -1);
  95                         sdata->u.mntr_flags = *flags;
  96                         ieee80211_adjust_monitor_flags(sdata, 1);
  97
  98                         ieee80211_configure_filter(local);
  99                 } else {
 100                         /*
 101                          * Because the interface is down, ieee80211_do_stop
 102                          * and ieee80211_do_open take care of "everything"
 103                          * mentioned in the comment above.
 104                          */
 105                         sdata->u.mntr_flags = *flags;
 106                 }
 107         }
 108
 109         return 0;
 110 }
 111
 112 static int ieee80211_start_p2p_device(struct wiphy *wiphy,
 113                                       struct wireless_dev *wdev)
 114 {
 115         struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
 116         int ret;
 117
 118         mutex_lock(&sdata->local->chanctx_mtx);
 119         ret = ieee80211_check_combinations(sdata, NULL, 0, 0);
 120         mutex_unlock(&sdata->local->chanctx_mtx);
 121         if (ret < 0)
 122                 return ret;
 123
 124         return ieee80211_do_open(wdev, true);
 125 }
 126
 127 static void ieee80211_stop_p2p_device(struct wiphy *wiphy,
 128                                       struct wireless_dev *wdev)
 129 {
 130         ieee80211_sdata_stop(IEEE80211_WDEV_TO_SUB_IF(wdev));
 131 }
 132
 133 static int ieee80211_set_noack_map(struct wiphy *wiphy,
 134                                   struct net_device *dev,
 135                                   u16 noack_map)
 136 {
 137         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 138
 139         sdata->noack_map = noack_map;
 140
 141         ieee80211_check_fast_xmit_iface(sdata);
 142
 143         return 0;
 144 }
 145
 146 static int ieee80211_add_key(struct wiphy *wiphy, struct net_device *dev,
 147                              u8 key_idx, bool pairwise, const u8 *mac_addr,
 148                              struct key_params *params)
 149 {
 150         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 151         struct ieee80211_local *local = sdata->local;
 152         struct sta_info *sta = NULL;
 153         const struct ieee80211_cipher_scheme *cs = NULL;
 154         struct ieee80211_key *key;
 155         int err;
 156
 157         if (!ieee80211_sdata_running(sdata))
 158                 return -ENETDOWN;
 159
 160         /* reject WEP and TKIP keys if WEP failed to initialize */
 161         switch (params->cipher) {
 162         case WLAN_CIPHER_SUITE_WEP40:
 163         case WLAN_CIPHER_SUITE_TKIP:
 164         case WLAN_CIPHER_SUITE_WEP104:
 165                 if (IS_ERR(local->wep_tx_tfm))
 166                         return -EINVAL;
 167                 break;
 168         case WLAN_CIPHER_SUITE_CCMP:
 169         case WLAN_CIPHER_SUITE_CCMP_256:
 170         case WLAN_CIPHER_SUITE_AES_CMAC:
 171         case WLAN_CIPHER_SUITE_BIP_CMAC_256:
 172         case WLAN_CIPHER_SUITE_BIP_GMAC_128:
 173         case WLAN_CIPHER_SUITE_BIP_GMAC_256:
 174         case WLAN_CIPHER_SUITE_GCMP:
 175         case WLAN_CIPHER_SUITE_GCMP_256:
 176                 break;
 177         default:
 178                 cs = ieee80211_cs_get(local, params->cipher, sdata->vif.type);
 179                 break;
 180         }
 181
 182         key = ieee80211_key_alloc(params->cipher, key_idx, params->key_len,
 183                                   params->key, params->seq_len, params->seq,
 184                                   cs);
 185         if (IS_ERR(key))
 186                 return PTR_ERR(key);
 187
 188         if (pairwise)
 189                 key->conf.flags |= IEEE80211_KEY_FLAG_PAIRWISE;
 190
 191         mutex_lock(&local->sta_mtx);
 192
 193         if (mac_addr) {
 194                 if (ieee80211_vif_is_mesh(&sdata->vif))
 195                         sta = sta_info_get(sdata, mac_addr);
 196                 else
 197                         sta = sta_info_get_bss(sdata, mac_addr);
 198                 /*
 199                  * The ASSOC test makes sure the driver is ready to
 200                  * receive the key. When wpa_supplicant has roamed
 201                  * using FT, it attempts to set the key before
 202                  * association has completed, this rejects that attempt
 203                  * so it will set the key again after association.
 204                  *
 205                  * TODO: accept the key if we have a station entry and
 206                  *       add it to the device after the station.
 207                  */
 208                 if (!sta || !test_sta_flag(sta, WLAN_STA_ASSOC)) {
 209                         ieee80211_key_free_unused(key);
 210                         err = -ENOENT;
 211                         goto out_unlock;
 212                 }
 213         }
 214
 215         switch (sdata->vif.type) {
 216         case NL80211_IFTYPE_STATION:
 217                 if (sdata->u.mgd.mfp != IEEE80211_MFP_DISABLED)
 218                         key->conf.flags |= IEEE80211_KEY_FLAG_RX_MGMT;
 219                 break;
 220         case NL80211_IFTYPE_AP:
 221         case NL80211_IFTYPE_AP_VLAN:
 222                 /* Keys without a station are used for TX only */
 223                 if (key->sta && test_sta_flag(key->sta, WLAN_STA_MFP))
 224                         key->conf.flags |= IEEE80211_KEY_FLAG_RX_MGMT;
 225                 break;
 226         case NL80211_IFTYPE_ADHOC:
 227                 /* no MFP (yet) */
 228                 break;
 229         case NL80211_IFTYPE_MESH_POINT:
 230 #ifdef CONFIG_MAC80211_MESH
 231                 if (sdata->u.mesh.security != IEEE80211_MESH_SEC_NONE)
 232                         key->conf.flags |= IEEE80211_KEY_FLAG_RX_MGMT;
 233                 break;
 234 #endif
 235         case NL80211_IFTYPE_WDS:
 236         case NL80211_IFTYPE_MONITOR:
 237         case NL80211_IFTYPE_P2P_DEVICE:
 238         case NL80211_IFTYPE_UNSPECIFIED:
 239         case NUM_NL80211_IFTYPES:
 240         case NL80211_IFTYPE_P2P_CLIENT:
 241         case NL80211_IFTYPE_P2P_GO:
 242         case NL80211_IFTYPE_OCB:
 243                 /* shouldn't happen */
 244                 WARN_ON_ONCE(1);
 245                 break;
 246         }
 247
 248         if (sta)
 249                 sta->cipher_scheme = cs;
 250
 251         err = ieee80211_key_link(key, sdata, sta);
 252
 253  out_unlock:
 254         mutex_unlock(&local->sta_mtx);
 255
 256         return err;
 257 }
 258
 259 static int ieee80211_del_key(struct wiphy *wiphy, struct net_device *dev,
 260                              u8 key_idx, bool pairwise, const u8 *mac_addr)
 261 {
 262         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 263         struct ieee80211_local *local = sdata->local;
 264         struct sta_info *sta;
 265         struct ieee80211_key *key = NULL;
 266         int ret;
 267
 268         mutex_lock(&local->sta_mtx);
 269         mutex_lock(&local->key_mtx);
 270
 271         if (mac_addr) {
 272                 ret = -ENOENT;
 273
 274                 sta = sta_info_get_bss(sdata, mac_addr);
 275                 if (!sta)
 276                         goto out_unlock;
 277
 278                 if (pairwise)
 279                         key = key_mtx_dereference(local, sta->ptk[key_idx]);
 280                 else
 281                         key = key_mtx_dereference(local, sta->gtk[key_idx]);
 282         } else
 283                 key = key_mtx_dereference(local, sdata->keys[key_idx]);
 284
 285         if (!key) {
 286                 ret = -ENOENT;
 287                 goto out_unlock;
 288         }
 289
 290         ieee80211_key_free(key, true);
 291
 292         ret = 0;
 293  out_unlock:
 294         mutex_unlock(&local->key_mtx);
 295         mutex_unlock(&local->sta_mtx);
 296
 297         return ret;
 298 }
 299
 300 static int ieee80211_get_key(struct wiphy *wiphy, struct net_device *dev,
 301                              u8 key_idx, bool pairwise, const u8 *mac_addr,
 302                              void *cookie,
 303                              void (*callback)(void *cookie,
 304                                               struct key_params *params))
 305 {
 306         struct ieee80211_sub_if_data *sdata;
 307         struct sta_info *sta = NULL;
 308         u8 seq[6] = {0};
 309         struct key_params params;
 310         struct ieee80211_key *key = NULL;
 311         u64 pn64;
 312         u32 iv32;
 313         u16 iv16;
 314         int err = -ENOENT;
 315         struct ieee80211_key_seq kseq = {};
 316
 317         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 318
 319         rcu_read_lock();
 320
 321         if (mac_addr) {
 322                 sta = sta_info_get_bss(sdata, mac_addr);
 323                 if (!sta)
 324                         goto out;
 325
 326                 if (pairwise && key_idx < NUM_DEFAULT_KEYS)
 327                         key = rcu_dereference(sta->ptk[key_idx]);
 328                 else if (!pairwise &&
 329                          key_idx < NUM_DEFAULT_KEYS + NUM_DEFAULT_MGMT_KEYS)
 330                         key = rcu_dereference(sta->gtk[key_idx]);
 331         } else
 332                 key = rcu_dereference(sdata->keys[key_idx]);
 333
 334         if (!key)
 335                 goto out;
 336
 337         memset(&params, 0, sizeof(params));
 338
 339         params.cipher = key->conf.cipher;
 340
 341         switch (key->conf.cipher) {
 342         case WLAN_CIPHER_SUITE_TKIP:
 343                 iv32 = key->u.tkip.tx.iv32;
 344                 iv16 = key->u.tkip.tx.iv16;
 345
 346                 if (key->flags & KEY_FLAG_UPLOADED_TO_HARDWARE &&
 347                     !(key->conf.flags & IEEE80211_KEY_FLAG_GENERATE_IV)) {
 348                         drv_get_key_seq(sdata->local, key, &kseq);
 349                         iv32 = kseq.tkip.iv32;
 350                         iv16 = kseq.tkip.iv16;
 351                 }
 352
 353                 seq[0] = iv16 & 0xff;
 354                 seq[1] = (iv16 >> 8) & 0xff;
 355                 seq[2] = iv32 & 0xff;
 356                 seq[3] = (iv32 >> 8) & 0xff;
 357                 seq[4] = (iv32 >> 16) & 0xff;
 358                 seq[5] = (iv32 >> 24) & 0xff;
 359                 params.seq = seq;
 360                 params.seq_len = 6;
 361                 break;
 362         case WLAN_CIPHER_SUITE_CCMP:
 363         case WLAN_CIPHER_SUITE_CCMP_256:
 364         case WLAN_CIPHER_SUITE_AES_CMAC:
 365         case WLAN_CIPHER_SUITE_BIP_CMAC_256:
 366                 BUILD_BUG_ON(offsetof(typeof(kseq), ccmp) !=
 367                              offsetof(typeof(kseq), aes_cmac));
 368         case WLAN_CIPHER_SUITE_BIP_GMAC_128:
 369         case WLAN_CIPHER_SUITE_BIP_GMAC_256:
 370                 BUILD_BUG_ON(offsetof(typeof(kseq), ccmp) !=
 371                              offsetof(typeof(kseq), aes_gmac));
 372         case WLAN_CIPHER_SUITE_GCMP:
 373         case WLAN_CIPHER_SUITE_GCMP_256:
 374                 BUILD_BUG_ON(offsetof(typeof(kseq), ccmp) !=
 375                              offsetof(typeof(kseq), gcmp));
 376
 377                 if (key->flags & KEY_FLAG_UPLOADED_TO_HARDWARE &&
 378                     !(key->conf.flags & IEEE80211_KEY_FLAG_GENERATE_IV)) {
 379                         drv_get_key_seq(sdata->local, key, &kseq);
 380                         memcpy(seq, kseq.ccmp.pn, 6);
 381                 } else {
 382                         pn64 = atomic64_read(&key->conf.tx_pn);
 383                         seq[0] = pn64;
 384                         seq[1] = pn64 >> 8;
 385                         seq[2] = pn64 >> 16;
 386                         seq[3] = pn64 >> 24;
 387                         seq[4] = pn64 >> 32;
 388                         seq[5] = pn64 >> 40;
 389                 }
 390                 params.seq = seq;
 391                 params.seq_len = 6;
 392                 break;
 393         default:
 394                 if (!(key->flags & KEY_FLAG_UPLOADED_TO_HARDWARE))
 395                         break;
 396                 if (WARN_ON(key->conf.flags & IEEE80211_KEY_FLAG_GENERATE_IV))
 397                         break;
 398                 drv_get_key_seq(sdata->local, key, &kseq);
 399                 params.seq = kseq.hw.seq;
 400                 params.seq_len = kseq.hw.seq_len;
 401                 break;
 402         }
 403
 404         params.key = key->conf.key;
 405         params.key_len = key->conf.keylen;
 406
 407         callback(cookie, &params);
 408         err = 0;
 409
 410  out:
 411         rcu_read_unlock();
 412         return err;
 413 }
 414
 415 static int ieee80211_config_default_key(struct wiphy *wiphy,
 416                                         struct net_device *dev,
 417                                         u8 key_idx, bool uni,
 418                                         bool multi)
 419 {
 420         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 421
 422         ieee80211_set_default_key(sdata, key_idx, uni, multi);
 423
 424         return 0;
 425 }
 426
 427 static int ieee80211_config_default_mgmt_key(struct wiphy *wiphy,
 428                                              struct net_device *dev,
 429                                              u8 key_idx)
 430 {
 431         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 432
 433         ieee80211_set_default_mgmt_key(sdata, key_idx);
 434
 435         return 0;
 436 }
 437
 438 void sta_set_rate_info_tx(struct sta_info *sta,
 439                           const struct ieee80211_tx_rate *rate,
 440                           struct rate_info *rinfo)
 441 {
 442         rinfo->flags = 0;
 443         if (rate->flags & IEEE80211_TX_RC_MCS) {
 444                 rinfo->flags |= RATE_INFO_FLAGS_MCS;
 445                 rinfo->mcs = rate->idx;
 446         } else if (rate->flags & IEEE80211_TX_RC_VHT_MCS) {
 447                 rinfo->flags |= RATE_INFO_FLAGS_VHT_MCS;
 448                 rinfo->mcs = ieee80211_rate_get_vht_mcs(rate);
 449                 rinfo->nss = ieee80211_rate_get_vht_nss(rate);
 450         } else {
 451                 struct ieee80211_supported_band *sband;
 452                 int shift = ieee80211_vif_get_shift(&sta->sdata->vif);
 453                 u16 brate;
 454
 455                 sband = sta->local->hw.wiphy->bands[
 456                                 ieee80211_get_sdata_band(sta->sdata)];
 457                 brate = sband->bitrates[rate->idx].bitrate;
 458                 rinfo->legacy = DIV_ROUND_UP(brate, 1 << shift);
 459         }
 460         if (rate->flags & IEEE80211_TX_RC_40_MHZ_WIDTH)
 461                 rinfo->bw = RATE_INFO_BW_40;
 462         else if (rate->flags & IEEE80211_TX_RC_80_MHZ_WIDTH)
 463                 rinfo->bw = RATE_INFO_BW_80;
 464         else if (rate->flags & IEEE80211_TX_RC_160_MHZ_WIDTH)
 465                 rinfo->bw = RATE_INFO_BW_160;
 466         else
 467                 rinfo->bw = RATE_INFO_BW_20;
 468         if (rate->flags & IEEE80211_TX_RC_SHORT_GI)
 469                 rinfo->flags |= RATE_INFO_FLAGS_SHORT_GI;
 470 }
 471
 472 void sta_set_rate_info_rx(struct sta_info *sta, struct rate_info *rinfo)
 473 {
 474         rinfo->flags = 0;
 475
 476         if (sta->last_rx_rate_flag & RX_FLAG_HT) {
 477                 rinfo->flags |= RATE_INFO_FLAGS_MCS;
 478                 rinfo->mcs = sta->last_rx_rate_idx;
 479         } else if (sta->last_rx_rate_flag & RX_FLAG_VHT) {
 480                 rinfo->flags |= RATE_INFO_FLAGS_VHT_MCS;
 481                 rinfo->nss = sta->last_rx_rate_vht_nss;
 482                 rinfo->mcs = sta->last_rx_rate_idx;
 483         } else {
 484                 struct ieee80211_supported_band *sband;
 485                 int shift = ieee80211_vif_get_shift(&sta->sdata->vif);
 486                 u16 brate;
 487
 488                 sband = sta->local->hw.wiphy->bands[
 489                                 ieee80211_get_sdata_band(sta->sdata)];
 490                 brate = sband->bitrates[sta->last_rx_rate_idx].bitrate;
 491                 rinfo->legacy = DIV_ROUND_UP(brate, 1 << shift);
 492         }
 493
 494         if (sta->last_rx_rate_flag & RX_FLAG_SHORT_GI)
 495                 rinfo->flags |= RATE_INFO_FLAGS_SHORT_GI;
 496
 497         if (sta->last_rx_rate_flag & RX_FLAG_5MHZ)
 498                 rinfo->bw = RATE_INFO_BW_5;
 499         else if (sta->last_rx_rate_flag & RX_FLAG_10MHZ)
 500                 rinfo->bw = RATE_INFO_BW_10;
 501         else if (sta->last_rx_rate_flag & RX_FLAG_40MHZ)
 502                 rinfo->bw = RATE_INFO_BW_40;
 503         else if (sta->last_rx_rate_vht_flag & RX_VHT_FLAG_80MHZ)
 504                 rinfo->bw = RATE_INFO_BW_80;
 505         else if (sta->last_rx_rate_vht_flag & RX_VHT_FLAG_160MHZ)
 506                 rinfo->bw = RATE_INFO_BW_160;
 507         else
 508                 rinfo->bw = RATE_INFO_BW_20;
 509 }
 510
 511 static int ieee80211_dump_station(struct wiphy *wiphy, struct net_device *dev,
 512                                   int idx, u8 *mac, struct station_info *sinfo)
 513 {
 514         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 515         struct ieee80211_local *local = sdata->local;
 516         struct sta_info *sta;
 517         int ret = -ENOENT;
 518
 519         mutex_lock(&local->sta_mtx);
 520
 521         sta = sta_info_get_by_idx(sdata, idx);
 522         if (sta) {
 523                 ret = 0;
 524                 memcpy(mac, sta->sta.addr, ETH_ALEN);
 525                 sta_set_sinfo(sta, sinfo);
 526         }
 527
 528         mutex_unlock(&local->sta_mtx);
 529
 530         return ret;
 531 }
 532
 533 static int ieee80211_dump_survey(struct wiphy *wiphy, struct net_device *dev,
 534                                  int idx, struct survey_info *survey)
 535 {
 536         struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
 537
 538         return drv_get_survey(local, idx, survey);
 539 }
 540
 541 static int ieee80211_get_station(struct wiphy *wiphy, struct net_device *dev,
 542                                  const u8 *mac, struct station_info *sinfo)
 543 {
 544         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 545         struct ieee80211_local *local = sdata->local;
 546         struct sta_info *sta;
 547         int ret = -ENOENT;
 548
 549         mutex_lock(&local->sta_mtx);
 550
 551         sta = sta_info_get_bss(sdata, mac);
 552         if (sta) {
 553                 ret = 0;
 554                 sta_set_sinfo(sta, sinfo);
 555         }
 556
 557         mutex_unlock(&local->sta_mtx);
 558
 559         return ret;
 560 }
 561
 562 static int ieee80211_set_monitor_channel(struct wiphy *wiphy,
 563                                          struct cfg80211_chan_def *chandef)
 564 {
 565         struct ieee80211_local *local = wiphy_priv(wiphy);
 566         struct ieee80211_sub_if_data *sdata;
 567         int ret = 0;
 568
 569         if (cfg80211_chandef_identical(&local->monitor_chandef, chandef))
 570                 return 0;
 571
 572         mutex_lock(&local->mtx);
 573         mutex_lock(&local->iflist_mtx);
 574         if (local->use_chanctx) {
 575                 sdata = rcu_dereference_protected(
 576                                 local->monitor_sdata,
 577                                 lockdep_is_held(&local->iflist_mtx));
 578                 if (sdata) {
 579                         ieee80211_vif_release_channel(sdata);
 580                         ret = ieee80211_vif_use_channel(sdata, chandef,
 581                                         IEEE80211_CHANCTX_EXCLUSIVE);
 582                 }
 583         } else if (local->open_count == local->monitors) {
 584                 local->_oper_chandef = *chandef;
 585                 ieee80211_hw_config(local, 0);
 586         }
 587
 588         if (ret == 0)
 589                 local->monitor_chandef = *chandef;
 590         mutex_unlock(&local->iflist_mtx);
 591         mutex_unlock(&local->mtx);
 592
 593         return ret;
 594 }
 595
 596 static int ieee80211_set_probe_resp(struct ieee80211_sub_if_data *sdata,
 597                                     const u8 *resp, size_t resp_len,
 598                                     const struct ieee80211_csa_settings *csa)
 599 {
 600         struct probe_resp *new, *old;
 601
 602         if (!resp || !resp_len)
 603                 return 1;
 604
 605         old = sdata_dereference(sdata->u.ap.probe_resp, sdata);
 606
 607         new = kzalloc(sizeof(struct probe_resp) + resp_len, GFP_KERNEL);
 608         if (!new)
 609                 return -ENOMEM;
 610
 611         new->len = resp_len;
 612         memcpy(new->data, resp, resp_len);
 613
 614         if (csa)
 615                 memcpy(new->csa_counter_offsets, csa->counter_offsets_presp,
 616                        csa->n_counter_offsets_presp *
 617                        sizeof(new->csa_counter_offsets[0]));
 618
 619         rcu_assign_pointer(sdata->u.ap.probe_resp, new);
 620         if (old)
 621                 kfree_rcu(old, rcu_head);
 622
 623         return 0;
 624 }
 625
 626 static int ieee80211_assign_beacon(struct ieee80211_sub_if_data *sdata,
 627                                    struct cfg80211_beacon_data *params,
 628                                    const struct ieee80211_csa_settings *csa)
 629 {
 630         struct beacon_data *new, *old;
 631         int new_head_len, new_tail_len;
 632         int size, err;
 633         u32 changed = BSS_CHANGED_BEACON;
 634
 635         old = sdata_dereference(sdata->u.ap.beacon, sdata);
 636
 637
 638         /* Need to have a beacon head if we don't have one yet */
 639         if (!params->head && !old)
 640                 return -EINVAL;
 641
 642         /* new or old head? */
 643         if (params->head)
 644                 new_head_len = params->head_len;
 645         else
 646                 new_head_len = old->head_len;
 647
 648         /* new or old tail? */
 649         if (params->tail || !old)
 650                 /* params->tail_len will be zero for !params->tail */
 651                 new_tail_len = params->tail_len;
 652         else
 653                 new_tail_len = old->tail_len;
 654
 655         size = sizeof(*new) + new_head_len + new_tail_len;
 656
 657         new = kzalloc(size, GFP_KERNEL);
 658         if (!new)
 659                 return -ENOMEM;
 660
 661         /* start filling the new info now */
 662
 663         /*
 664          * pointers go into the block we allocated,
 665          * memory is | beacon_data | head | tail |
 666          */
 667         new->head = ((u8 *) new) + sizeof(*new);
 668         new->tail = new->head + new_head_len;
 669         new->head_len = new_head_len;
 670         new->tail_len = new_tail_len;
 671
 672         if (csa) {
 673                 new->csa_current_counter = csa->count;
 674                 memcpy(new->csa_counter_offsets, csa->counter_offsets_beacon,
 675                        csa->n_counter_offsets_beacon *
 676                        sizeof(new->csa_counter_offsets[0]));
 677         }
 678
 679         /* copy in head */
 680         if (params->head)
 681                 memcpy(new->head, params->head, new_head_len);
 682         else
 683                 memcpy(new->head, old->head, new_head_len);
 684
 685         /* copy in optional tail */
 686         if (params->tail)
 687                 memcpy(new->tail, params->tail, new_tail_len);
 688         else
 689                 if (old)
 690                         memcpy(new->tail, old->tail, new_tail_len);
 691
 692         err = ieee80211_set_probe_resp(sdata, params->probe_resp,
 693                                        params->probe_resp_len, csa);
 694         if (err < 0)
 695                 return err;
 696         if (err == 0)
 697                 changed |= BSS_CHANGED_AP_PROBE_RESP;
 698
 699         rcu_assign_pointer(sdata->u.ap.beacon, new);
 700
 701         if (old)
 702                 kfree_rcu(old, rcu_head);
 703
 704         return changed;
 705 }
 706
 707 static int ieee80211_start_ap(struct wiphy *wiphy, struct net_device *dev,
 708                               struct cfg80211_ap_settings *params)
 709 {
 710         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 711         struct ieee80211_local *local = sdata->local;
 712         struct beacon_data *old;
 713         struct ieee80211_sub_if_data *vlan;
 714         u32 changed = BSS_CHANGED_BEACON_INT |
 715                       BSS_CHANGED_BEACON_ENABLED |
 716                       BSS_CHANGED_BEACON |
 717                       BSS_CHANGED_SSID |
 718                       BSS_CHANGED_P2P_PS |
 719                       BSS_CHANGED_TXPOWER;
 720         int err;
 721
 722         old = sdata_dereference(sdata->u.ap.beacon, sdata);
 723         if (old)
 724                 return -EALREADY;
 725
 726         switch (params->smps_mode) {
 727         case NL80211_SMPS_OFF:
 728                 sdata->smps_mode = IEEE80211_SMPS_OFF;
 729                 break;
 730         case NL80211_SMPS_STATIC:
 731                 sdata->smps_mode = IEEE80211_SMPS_STATIC;
 732                 break;
 733         case NL80211_SMPS_DYNAMIC:
 734                 sdata->smps_mode = IEEE80211_SMPS_DYNAMIC;
 735                 break;
 736         default:
 737                 return -EINVAL;
 738         }
 739         sdata->needed_rx_chains = sdata->local->rx_chains;
 740
 741         mutex_lock(&local->mtx);
 742         err = ieee80211_vif_use_channel(sdata, &params->chandef,
 743                                         IEEE80211_CHANCTX_SHARED);
 744         if (!err)
 745                 ieee80211_vif_copy_chanctx_to_vlans(sdata, false);
 746         mutex_unlock(&local->mtx);
 747         if (err)
 748                 return err;
 749
 750         /*
 751          * Apply control port protocol, this allows us to
 752          * not encrypt dynamic WEP control frames.
 753          */
 754         sdata->control_port_protocol = params->crypto.control_port_ethertype;
 755         sdata->control_port_no_encrypt = params->crypto.control_port_no_encrypt;
 756         sdata->encrypt_headroom = ieee80211_cs_headroom(sdata->local,
 757                                                         &params->crypto,
 758                                                         sdata->vif.type);
 759
 760         list_for_each_entry(vlan, &sdata->u.ap.vlans, u.vlan.list) {
 761                 vlan->control_port_protocol =
 762                         params->crypto.control_port_ethertype;
 763                 vlan->control_port_no_encrypt =
 764                         params->crypto.control_port_no_encrypt;
 765                 vlan->encrypt_headroom =
 766                         ieee80211_cs_headroom(sdata->local,
 767                                               &params->crypto,
 768                                               vlan->vif.type);
 769         }
 770
 771         sdata->vif.bss_conf.beacon_int = params->beacon_interval;
 772         sdata->vif.bss_conf.dtim_period = params->dtim_period;
 773         sdata->vif.bss_conf.enable_beacon = true;
 774
 775         sdata->vif.bss_conf.ssid_len = params->ssid_len;
 776         if (params->ssid_len)
 777                 memcpy(sdata->vif.bss_conf.ssid, params->ssid,
 778                        params->ssid_len);
 779         sdata->vif.bss_conf.hidden_ssid =
 780                 (params->hidden_ssid != NL80211_HIDDEN_SSID_NOT_IN_USE);
 781
 782         memset(&sdata->vif.bss_conf.p2p_noa_attr, 0,
 783                sizeof(sdata->vif.bss_conf.p2p_noa_attr));
 784         sdata->vif.bss_conf.p2p_noa_attr.oppps_ctwindow =
 785                 params->p2p_ctwindow & IEEE80211_P2P_OPPPS_CTWINDOW_MASK;
 786         if (params->p2p_opp_ps)
 787                 sdata->vif.bss_conf.p2p_noa_attr.oppps_ctwindow |=
 788                                         IEEE80211_P2P_OPPPS_ENABLE_BIT;
 789
 790         err = ieee80211_assign_beacon(sdata, &params->beacon, NULL);
 791         if (err < 0) {
 792                 ieee80211_vif_release_channel(sdata);
 793                 return err;
 794         }
 795         changed |= err;
 796
 797         err = drv_start_ap(sdata->local, sdata);
 798         if (err) {
 799                 old = sdata_dereference(sdata->u.ap.beacon, sdata);
 800
 801                 if (old)
 802                         kfree_rcu(old, rcu_head);
 803                 RCU_INIT_POINTER(sdata->u.ap.beacon, NULL);
 804                 ieee80211_vif_release_channel(sdata);
 805                 return err;
 806         }
 807
 808         ieee80211_recalc_dtim(local, sdata);
 809         ieee80211_bss_info_change_notify(sdata, changed);
 810
 811         netif_carrier_on(dev);
 812         list_for_each_entry(vlan, &sdata->u.ap.vlans, u.vlan.list)
 813                 netif_carrier_on(vlan->dev);
 814
 815         return 0;
 816 }
 817
 818 static int ieee80211_change_beacon(struct wiphy *wiphy, struct net_device *dev,
 819                                    struct cfg80211_beacon_data *params)
 820 {
 821         struct ieee80211_sub_if_data *sdata;
 822         struct beacon_data *old;
 823         int err;
 824
 825         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 826         sdata_assert_lock(sdata);
 827
 828         /* don't allow changing the beacon while CSA is in place - offset
 829          * of channel switch counter may change
 830          */
 831         if (sdata->vif.csa_active)
 832                 return -EBUSY;
 833
 834         old = sdata_dereference(sdata->u.ap.beacon, sdata);
 835         if (!old)
 836                 return -ENOENT;
 837
 838         err = ieee80211_assign_beacon(sdata, params, NULL);
 839         if (err < 0)
 840                 return err;
 841         ieee80211_bss_info_change_notify(sdata, err);
 842         return 0;
 843 }
 844
 845 static int ieee80211_stop_ap(struct wiphy *wiphy, struct net_device *dev)
 846 {
 847         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 848         struct ieee80211_sub_if_data *vlan;
 849         struct ieee80211_local *local = sdata->local;
 850         struct beacon_data *old_beacon;
 851         struct probe_resp *old_probe_resp;
 852         struct cfg80211_chan_def chandef;
 853
 854         sdata_assert_lock(sdata);
 855
 856         old_beacon = sdata_dereference(sdata->u.ap.beacon, sdata);
 857         if (!old_beacon)
 858                 return -ENOENT;
 859         old_probe_resp = sdata_dereference(sdata->u.ap.probe_resp, sdata);
 860
 861         /* abort any running channel switch */
 862         mutex_lock(&local->mtx);
 863         sdata->vif.csa_active = false;
 864         if (sdata->csa_block_tx) {
 865                 ieee80211_wake_vif_queues(local, sdata,
 866                                           IEEE80211_QUEUE_STOP_REASON_CSA);
 867                 sdata->csa_block_tx = false;
 868         }
 869
 870         mutex_unlock(&local->mtx);
 871
 872         kfree(sdata->u.ap.next_beacon);
 873         sdata->u.ap.next_beacon = NULL;
 874
 875         /* turn off carrier for this interface and dependent VLANs */
 876         list_for_each_entry(vlan, &sdata->u.ap.vlans, u.vlan.list)
 877                 netif_carrier_off(vlan->dev);
 878         netif_carrier_off(dev);
 879
 880         /* remove beacon and probe response */
 881         RCU_INIT_POINTER(sdata->u.ap.beacon, NULL);
 882         RCU_INIT_POINTER(sdata->u.ap.probe_resp, NULL);
 883         kfree_rcu(old_beacon, rcu_head);
 884         if (old_probe_resp)
 885                 kfree_rcu(old_probe_resp, rcu_head);
 886         sdata->u.ap.driver_smps_mode = IEEE80211_SMPS_OFF;
 887
 888         __sta_info_flush(sdata, true);
 889         ieee80211_free_keys(sdata, true);
 890
 891         sdata->vif.bss_conf.enable_beacon = false;
 892         sdata->vif.bss_conf.ssid_len = 0;
 893         clear_bit(SDATA_STATE_OFFCHANNEL_BEACON_STOPPED, &sdata->state);
 894         ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_BEACON_ENABLED);
 895
 896         if (sdata->wdev.cac_started) {
 897                 chandef = sdata->vif.bss_conf.chandef;
 898                 cancel_delayed_work_sync(&sdata->dfs_cac_timer_work);
 899                 cfg80211_cac_event(sdata->dev, &chandef,
 900                                    NL80211_RADAR_CAC_ABORTED,
 901                                    GFP_KERNEL);
 902         }
 903
 904         drv_stop_ap(sdata->local, sdata);
 905
 906         /* free all potentially still buffered bcast frames */
 907         local->total_ps_buffered -= skb_queue_len(&sdata->u.ap.ps.bc_buf);
 908         skb_queue_purge(&sdata->u.ap.ps.bc_buf);
 909
 910         mutex_lock(&local->mtx);
 911         ieee80211_vif_copy_chanctx_to_vlans(sdata, true);
 912         ieee80211_vif_release_channel(sdata);
 913         mutex_unlock(&local->mtx);
 914
 915         return 0;
 916 }
 917
 918 /* Layer 2 Update frame (802.2 Type 1 LLC XID Update response) */
 919 struct iapp_layer2_update {
 920         u8 da[ETH_ALEN];        /* broadcast */
 921         u8 sa[ETH_ALEN];        /* STA addr */
 922         __be16 len;             /* 6 */
 923         u8 dsap;                /* 0 */
 924         u8 ssap;                /* 0 */
 925         u8 control;
 926         u8 xid_info[3];
 927 } __packed;
 928
 929 static void ieee80211_send_layer2_update(struct sta_info *sta)
 930 {
 931         struct iapp_layer2_update *msg;
 932         struct sk_buff *skb;
 933
 934         /* Send Level 2 Update Frame to update forwarding tables in layer 2
 935          * bridge devices */
 936
 937         skb = dev_alloc_skb(sizeof(*msg));
 938         if (!skb)
 939                 return;
 940         msg = (struct iapp_layer2_update *)skb_put(skb, sizeof(*msg));
 941
 942         /* 802.2 Type 1 Logical Link Control (LLC) Exchange Identifier (XID)
 943          * Update response frame; IEEE Std 802.2-1998, 5.4.1.2.1 */
 944
 945         eth_broadcast_addr(msg->da);
 946         memcpy(msg->sa, sta->sta.addr, ETH_ALEN);
 947         msg->len = htons(6);
 948         msg->dsap = 0;
 949         msg->ssap = 0x01;       /* NULL LSAP, CR Bit: Response */
 950         msg->control = 0xaf;    /* XID response lsb.1111F101.
 951                                  * F=0 (no poll command; unsolicited frame) */
 952         msg->xid_info[0] = 0x81;        /* XID format identifier */
 953         msg->xid_info[1] = 1;   /* LLC types/classes: Type 1 LLC */
 954         msg->xid_info[2] = 0;   /* XID sender's receive window size (RW) */
 955
 956         skb->dev = sta->sdata->dev;
 957         skb->protocol = eth_type_trans(skb, sta->sdata->dev);
 958         memset(skb->cb, 0, sizeof(skb->cb));
 959         netif_rx_ni(skb);
 960 }
 961
 962 static int sta_apply_auth_flags(struct ieee80211_local *local,
 963                                 struct sta_info *sta,
 964                                 u32 mask, u32 set)
 965 {
 966         int ret;
 967
 968         if (mask & BIT(NL80211_STA_FLAG_AUTHENTICATED) &&
 969             set & BIT(NL80211_STA_FLAG_AUTHENTICATED) &&
 970             !test_sta_flag(sta, WLAN_STA_AUTH)) {
 971                 ret = sta_info_move_state(sta, IEEE80211_STA_AUTH);
 972                 if (ret)
 973                         return ret;
 974         }
 975
 976         if (mask & BIT(NL80211_STA_FLAG_ASSOCIATED) &&
 977             set & BIT(NL80211_STA_FLAG_ASSOCIATED) &&
 978             !test_sta_flag(sta, WLAN_STA_ASSOC)) {
 979                 /*
 980                  * When peer becomes associated, init rate control as
 981                  * well. Some drivers require rate control initialized
 982                  * before drv_sta_state() is called.
 983                  */
 984                 if (test_sta_flag(sta, WLAN_STA_TDLS_PEER))
 985                         rate_control_rate_init(sta);
 986
 987                 ret = sta_info_move_state(sta, IEEE80211_STA_ASSOC);
 988                 if (ret)
 989                         return ret;
 990         }
 991
 992         if (mask & BIT(NL80211_STA_FLAG_AUTHORIZED)) {
 993                 if (set & BIT(NL80211_STA_FLAG_AUTHORIZED))
 994                         ret = sta_info_move_state(sta, IEEE80211_STA_AUTHORIZED);
 995                 else if (test_sta_flag(sta, WLAN_STA_AUTHORIZED))
 996                         ret = sta_info_move_state(sta, IEEE80211_STA_ASSOC);
 997                 else
 998                         ret = 0;
 999                 if (ret)
1000                         return ret;
1001         }
1002
1003         if (mask & BIT(NL80211_STA_FLAG_ASSOCIATED) &&
1004             !(set & BIT(NL80211_STA_FLAG_ASSOCIATED)) &&
1005             test_sta_flag(sta, WLAN_STA_ASSOC)) {
1006                 ret = sta_info_move_state(sta, IEEE80211_STA_AUTH);
1007                 if (ret)
1008                         return ret;
1009         }
1010
1011         if (mask & BIT(NL80211_STA_FLAG_AUTHENTICATED) &&
1012             !(set & BIT(NL80211_STA_FLAG_AUTHENTICATED)) &&
1013             test_sta_flag(sta, WLAN_STA_AUTH)) {
1014                 ret = sta_info_move_state(sta, IEEE80211_STA_NONE);
1015                 if (ret)
1016                         return ret;
1017         }
1018
1019         return 0;
1020 }
1021
1022 static void sta_apply_mesh_params(struct ieee80211_local *local,
1023                                   struct sta_info *sta,
1024                                   struct station_parameters *params)
1025 {
1026 #ifdef CONFIG_MAC80211_MESH
1027         struct ieee80211_sub_if_data *sdata = sta->sdata;
1028         u32 changed = 0;
1029
1030         if (params->sta_modify_mask & STATION_PARAM_APPLY_PLINK_STATE) {
1031                 switch (params->plink_state) {
1032                 case NL80211_PLINK_ESTAB:
1033                         if (sta->mesh->plink_state != NL80211_PLINK_ESTAB)
1034                                 changed = mesh_plink_inc_estab_count(sdata);
1035                         sta->mesh->plink_state = params->plink_state;
1036
1037                         ieee80211_mps_sta_status_update(sta);
1038                         changed |= ieee80211_mps_set_sta_local_pm(sta,
1039                                       sdata->u.mesh.mshcfg.power_mode);
1040                         break;
1041                 case NL80211_PLINK_LISTEN:
1042                 case NL80211_PLINK_BLOCKED:
1043                 case NL80211_PLINK_OPN_SNT:
1044                 case NL80211_PLINK_OPN_RCVD:
1045                 case NL80211_PLINK_CNF_RCVD:
1046                 case NL80211_PLINK_HOLDING:
1047                         if (sta->mesh->plink_state == NL80211_PLINK_ESTAB)
1048                                 changed = mesh_plink_dec_estab_count(sdata);
1049                         sta->mesh->plink_state = params->plink_state;
1050
1051                         ieee80211_mps_sta_status_update(sta);
1052                         changed |= ieee80211_mps_set_sta_local_pm(sta,
1053                                         NL80211_MESH_POWER_UNKNOWN);
1054                         break;
1055                 default:
1056                         /*  nothing  */
1057                         break;
1058                 }
1059         }
1060
1061         switch (params->plink_action) {
1062         case NL80211_PLINK_ACTION_NO_ACTION:
1063                 /* nothing */
1064                 break;
1065         case NL80211_PLINK_ACTION_OPEN:
1066                 changed |= mesh_plink_open(sta);
1067                 break;
1068         case NL80211_PLINK_ACTION_BLOCK:
1069                 changed |= mesh_plink_block(sta);
1070                 break;
1071         }
1072
1073         if (params->local_pm)
1074                 changed |= ieee80211_mps_set_sta_local_pm(sta,
1075                                                           params->local_pm);
1076
1077         ieee80211_mbss_info_change_notify(sdata, changed);
1078 #endif
1079 }
1080
1081 static int sta_apply_parameters(struct ieee80211_local *local,
1082                                 struct sta_info *sta,
1083                                 struct station_parameters *params)
1084 {
1085         int ret = 0;
1086         struct ieee80211_supported_band *sband;
1087         struct ieee80211_sub_if_data *sdata = sta->sdata;
1088         enum ieee80211_band band = ieee80211_get_sdata_band(sdata);
1089         u32 mask, set;
1090
1091         sband = local->hw.wiphy->bands[band];
1092
1093         mask = params->sta_flags_mask;
1094         set = params->sta_flags_set;
1095
1096         if (ieee80211_vif_is_mesh(&sdata->vif)) {
1097                 /*
1098                  * In mesh mode, ASSOCIATED isn't part of the nl80211
1099                  * API but must follow AUTHENTICATED for driver state.
1100                  */
1101                 if (mask & BIT(NL80211_STA_FLAG_AUTHENTICATED))
1102                         mask |= BIT(NL80211_STA_FLAG_ASSOCIATED);
1103                 if (set & BIT(NL80211_STA_FLAG_AUTHENTICATED))
1104                         set |= BIT(NL80211_STA_FLAG_ASSOCIATED);
1105         } else if (test_sta_flag(sta, WLAN_STA_TDLS_PEER)) {
1106                 /*
1107                  * TDLS -- everything follows authorized, but
1108                  * only becoming authorized is possible, not
1109                  * going back
1110                  */
1111                 if (set & BIT(NL80211_STA_FLAG_AUTHORIZED)) {
1112                         set |= BIT(NL80211_STA_FLAG_AUTHENTICATED) |
1113                                BIT(NL80211_STA_FLAG_ASSOCIATED);
1114                         mask |= BIT(NL80211_STA_FLAG_AUTHENTICATED) |
1115                                 BIT(NL80211_STA_FLAG_ASSOCIATED);
1116                 }
1117         }
1118
1119         if (mask & BIT(NL80211_STA_FLAG_WME) &&
1120             local->hw.queues >= IEEE80211_NUM_ACS)
1121                 sta->sta.wme = set & BIT(NL80211_STA_FLAG_WME);
1122
1123         /* auth flags will be set later for TDLS stations */
1124         if (!test_sta_flag(sta, WLAN_STA_TDLS_PEER)) {
1125                 ret = sta_apply_auth_flags(local, sta, mask, set);
1126                 if (ret)
1127                         return ret;
1128         }
1129
1130         if (mask & BIT(NL80211_STA_FLAG_SHORT_PREAMBLE)) {
1131                 if (set & BIT(NL80211_STA_FLAG_SHORT_PREAMBLE))
1132                         set_sta_flag(sta, WLAN_STA_SHORT_PREAMBLE);
1133                 else
1134                         clear_sta_flag(sta, WLAN_STA_SHORT_PREAMBLE);
1135         }
1136
1137         if (mask & BIT(NL80211_STA_FLAG_MFP)) {
1138                 if (set & BIT(NL80211_STA_FLAG_MFP))
1139                         set_sta_flag(sta, WLAN_STA_MFP);
1140                 else
1141                         clear_sta_flag(sta, WLAN_STA_MFP);
1142         }
1143
1144         if (mask & BIT(NL80211_STA_FLAG_TDLS_PEER)) {
1145                 if (set & BIT(NL80211_STA_FLAG_TDLS_PEER))
1146                         set_sta_flag(sta, WLAN_STA_TDLS_PEER);
1147                 else
1148                         clear_sta_flag(sta, WLAN_STA_TDLS_PEER);
1149         }
1150
1151         /* mark TDLS channel switch support, if the AP allows it */
1152         if (test_sta_flag(sta, WLAN_STA_TDLS_PEER) &&
1153             !sdata->u.mgd.tdls_chan_switch_prohibited &&
1154             params->ext_capab_len >= 4 &&
1155             params->ext_capab[3] & WLAN_EXT_CAPA4_TDLS_CHAN_SWITCH)
1156                 set_sta_flag(sta, WLAN_STA_TDLS_CHAN_SWITCH);
1157
1158         if (test_sta_flag(sta, WLAN_STA_TDLS_PEER) &&
1159             !sdata->u.mgd.tdls_wider_bw_prohibited &&
1160             ieee80211_hw_check(&local->hw, TDLS_WIDER_BW) &&
1161             params->ext_capab_len >= 8 &&
1162             params->ext_capab[7] & WLAN_EXT_CAPA8_TDLS_WIDE_BW_ENABLED)
1163                 set_sta_flag(sta, WLAN_STA_TDLS_WIDER_BW);
1164
1165         if (params->sta_modify_mask & STATION_PARAM_APPLY_UAPSD) {
1166                 sta->sta.uapsd_queues = params->uapsd_queues;
1167                 sta->sta.max_sp = params->max_sp;
1168         }
1169
1170         /*
1171          * cfg80211 validates this (1-2007) and allows setting the AID
1172          * only when creating a new station entry
1173          */
1174         if (params->aid)
1175                 sta->sta.aid = params->aid;
1176
1177         /*
1178          * Some of the following updates would be racy if called on an
1179          * existing station, via ieee80211_change_station(). However,
1180          * all such changes are rejected by cfg80211 except for updates
1181          * changing the supported rates on an existing but not yet used
1182          * TDLS peer.
1183          */
1184
1185         if (params->listen_interval >= 0)
1186                 sta->listen_interval = params->listen_interval;
1187
1188         if (params->supported_rates) {
1189                 ieee80211_parse_bitrates(&sdata->vif.bss_conf.chandef,
1190                                          sband, params->supported_rates,
1191                                          params->supported_rates_len,
1192                                          &sta->sta.supp_rates[band]);
1193         }
1194
1195         if (params->ht_capa)
1196                 ieee80211_ht_cap_ie_to_sta_ht_cap(sdata, sband,
1197                                                   params->ht_capa, sta);
1198
1199         if (params->vht_capa)
1200                 ieee80211_vht_cap_ie_to_sta_vht_cap(sdata, sband,
1201                                                     params->vht_capa, sta);
1202
1203         if (params->opmode_notif_used) {
1204                 /* returned value is only needed for rc update, but the
1205                  * rc isn't initialized here yet, so ignore it
1206                  */
1207                 __ieee80211_vht_handle_opmode(sdata, sta,
1208                                               params->opmode_notif,
1209                                               band, false);
1210         }
1211
1212         if (ieee80211_vif_is_mesh(&sdata->vif))
1213                 sta_apply_mesh_params(local, sta, params);
1214
1215         /* set the STA state after all sta info from usermode has been set */
1216         if (test_sta_flag(sta, WLAN_STA_TDLS_PEER)) {
1217                 ret = sta_apply_auth_flags(local, sta, mask, set);
1218                 if (ret)
1219                         return ret;
1220         }
1221
1222         return 0;
1223 }
1224
1225 static int ieee80211_add_station(struct wiphy *wiphy, struct net_device *dev,
1226                                  const u8 *mac,
1227                                  struct station_parameters *params)
1228 {
1229         struct ieee80211_local *local = wiphy_priv(wiphy);
1230         struct sta_info *sta;
1231         struct ieee80211_sub_if_data *sdata;
1232         int err;
1233         int layer2_update;
1234
1235         if (params->vlan) {
1236                 sdata = IEEE80211_DEV_TO_SUB_IF(params->vlan);
1237
1238                 if (sdata->vif.type != NL80211_IFTYPE_AP_VLAN &&
1239                     sdata->vif.type != NL80211_IFTYPE_AP)
1240                         return -EINVAL;
1241         } else
1242                 sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1243
1244         if (ether_addr_equal(mac, sdata->vif.addr))
1245                 return -EINVAL;
1246
1247         if (is_multicast_ether_addr(mac))
1248                 return -EINVAL;
1249
1250         sta = sta_info_alloc(sdata, mac, GFP_KERNEL);
1251         if (!sta)
1252                 return -ENOMEM;
1253
1254         /*
1255          * defaults -- if userspace wants something else we'll
1256          * change it accordingly in sta_apply_parameters()
1257          */
1258         if (!(params->sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER))) {
1259                 sta_info_pre_move_state(sta, IEEE80211_STA_AUTH);
1260                 sta_info_pre_move_state(sta, IEEE80211_STA_ASSOC);
1261         } else {
1262                 sta->sta.tdls = true;
1263         }
1264
1265         err = sta_apply_parameters(local, sta, params);
1266         if (err) {
1267                 sta_info_free(local, sta);
1268                 return err;
1269         }
1270
1271         /*
1272          * for TDLS, rate control should be initialized only when
1273          * rates are known and station is marked authorized
1274          */
1275         if (!test_sta_flag(sta, WLAN_STA_TDLS_PEER))
1276                 rate_control_rate_init(sta);
1277
1278         layer2_update = sdata->vif.type == NL80211_IFTYPE_AP_VLAN ||
1279                 sdata->vif.type == NL80211_IFTYPE_AP;
1280
1281         err = sta_info_insert_rcu(sta);
1282         if (err) {
1283                 rcu_read_unlock();
1284                 return err;
1285         }
1286
1287         if (layer2_update)
1288                 ieee80211_send_layer2_update(sta);
1289
1290         rcu_read_unlock();
1291
1292         return 0;
1293 }
1294
1295 static int ieee80211_del_station(struct wiphy *wiphy, struct net_device *dev,
1296                                  struct station_del_parameters *params)
1297 {
1298         struct ieee80211_sub_if_data *sdata;
1299
1300         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1301
1302         if (params->mac)
1303                 return sta_info_destroy_addr_bss(sdata, params->mac);
1304
1305         sta_info_flush(sdata);
1306         return 0;
1307 }
1308
1309 static int ieee80211_change_station(struct wiphy *wiphy,
1310                                     struct net_device *dev, const u8 *mac,
1311                                     struct station_parameters *params)
1312 {
1313         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1314         struct ieee80211_local *local = wiphy_priv(wiphy);
1315         struct sta_info *sta;
1316         struct ieee80211_sub_if_data *vlansdata;
1317         enum cfg80211_station_type statype;
1318         int err;
1319
1320         mutex_lock(&local->sta_mtx);
1321
1322         sta = sta_info_get_bss(sdata, mac);
1323         if (!sta) {
1324                 err = -ENOENT;
1325                 goto out_err;
1326         }
1327
1328         switch (sdata->vif.type) {
1329         case NL80211_IFTYPE_MESH_POINT:
1330                 if (sdata->u.mesh.user_mpm)
1331                         statype = CFG80211_STA_MESH_PEER_USER;
1332                 else
1333                         statype = CFG80211_STA_MESH_PEER_KERNEL;
1334                 break;
1335         case NL80211_IFTYPE_ADHOC:
1336                 statype = CFG80211_STA_IBSS;
1337                 break;
1338         case NL80211_IFTYPE_STATION:
1339                 if (!test_sta_flag(sta, WLAN_STA_TDLS_PEER)) {
1340                         statype = CFG80211_STA_AP_STA;
1341                         break;
1342                 }
1343                 if (test_sta_flag(sta, WLAN_STA_AUTHORIZED))
1344                         statype = CFG80211_STA_TDLS_PEER_ACTIVE;
1345                 else
1346                         statype = CFG80211_STA_TDLS_PEER_SETUP;
1347                 break;
1348         case NL80211_IFTYPE_AP:
1349         case NL80211_IFTYPE_AP_VLAN:
1350                 statype = CFG80211_STA_AP_CLIENT;
1351                 break;
1352         default:
1353                 err = -EOPNOTSUPP;
1354                 goto out_err;
1355         }
1356
1357         err = cfg80211_check_station_change(wiphy, params, statype);
1358         if (err)
1359                 goto out_err;
1360
1361         if (params->vlan && params->vlan != sta->sdata->dev) {
1362                 bool prev_4addr = false;
1363                 bool new_4addr = false;
1364
1365                 vlansdata = IEEE80211_DEV_TO_SUB_IF(params->vlan);
1366
1367                 if (params->vlan->ieee80211_ptr->use_4addr) {
1368                         if (vlansdata->u.vlan.sta) {
1369                                 err = -EBUSY;
1370                                 goto out_err;
1371                         }
1372
1373                         rcu_assign_pointer(vlansdata->u.vlan.sta, sta);
1374                         new_4addr = true;
1375                 }
1376
1377                 if (sta->sdata->vif.type == NL80211_IFTYPE_AP_VLAN &&
1378                     sta->sdata->u.vlan.sta) {
1379                         RCU_INIT_POINTER(sta->sdata->u.vlan.sta, NULL);
1380                         prev_4addr = true;
1381                 }
1382
1383                 sta->sdata = vlansdata;
1384                 ieee80211_check_fast_xmit(sta);
1385
1386                 if (sta->sta_state == IEEE80211_STA_AUTHORIZED &&
1387                     prev_4addr != new_4addr) {
1388                         if (new_4addr)
1389                                 atomic_dec(&sta->sdata->bss->num_mcast_sta);
1390                         else
1391                                 atomic_inc(&sta->sdata->bss->num_mcast_sta);
1392                 }
1393
1394                 ieee80211_send_layer2_update(sta);
1395         }
1396
1397         err = sta_apply_parameters(local, sta, params);
1398         if (err)
1399                 goto out_err;
1400
1401         mutex_unlock(&local->sta_mtx);
1402
1403         if ((sdata->vif.type == NL80211_IFTYPE_AP ||
1404              sdata->vif.type == NL80211_IFTYPE_AP_VLAN) &&
1405             sta->known_smps_mode != sta->sdata->bss->req_smps &&
1406             test_sta_flag(sta, WLAN_STA_AUTHORIZED) &&
1407             sta_info_tx_streams(sta) != 1) {
1408                 ht_dbg(sta->sdata,
1409                        "%pM just authorized and MIMO capable - update SMPS\n",
1410                        sta->sta.addr);
1411                 ieee80211_send_smps_action(sta->sdata,
1412                         sta->sdata->bss->req_smps,
1413                         sta->sta.addr,
1414                         sta->sdata->vif.bss_conf.bssid);
1415         }
1416
1417         if (sdata->vif.type == NL80211_IFTYPE_STATION &&
1418             params->sta_flags_mask & BIT(NL80211_STA_FLAG_AUTHORIZED)) {
1419                 ieee80211_recalc_ps(local, -1);
1420                 ieee80211_recalc_ps_vif(sdata);
1421         }
1422
1423         return 0;
1424 out_err:
1425         mutex_unlock(&local->sta_mtx);
1426         return err;
1427 }
1428
1429 #ifdef CONFIG_MAC80211_MESH
1430 static int ieee80211_add_mpath(struct wiphy *wiphy, struct net_device *dev,
1431                                const u8 *dst, const u8 *next_hop)
1432 {
1433         struct ieee80211_sub_if_data *sdata;
1434         struct mesh_path *mpath;
1435         struct sta_info *sta;
1436
1437         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1438
1439         rcu_read_lock();
1440         sta = sta_info_get(sdata, next_hop);
1441         if (!sta) {
1442                 rcu_read_unlock();
1443                 return -ENOENT;
1444         }
1445
1446         mpath = mesh_path_add(sdata, dst);
1447         if (IS_ERR(mpath)) {
1448                 rcu_read_unlock();
1449                 return PTR_ERR(mpath);
1450         }
1451
1452         mesh_path_fix_nexthop(mpath, sta);
1453
1454         rcu_read_unlock();
1455         return 0;
1456 }
1457
1458 static int ieee80211_del_mpath(struct wiphy *wiphy, struct net_device *dev,
1459                                const u8 *dst)
1460 {
1461         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1462
1463         if (dst)
1464                 return mesh_path_del(sdata, dst);
1465
1466         mesh_path_flush_by_iface(sdata);
1467         return 0;
1468 }
1469
1470 static int ieee80211_change_mpath(struct wiphy *wiphy, struct net_device *dev,
1471                                   const u8 *dst, const u8 *next_hop)
1472 {
1473         struct ieee80211_sub_if_data *sdata;
1474         struct mesh_path *mpath;
1475         struct sta_info *sta;
1476
1477         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1478
1479         rcu_read_lock();
1480
1481         sta = sta_info_get(sdata, next_hop);
1482         if (!sta) {
1483                 rcu_read_unlock();
1484                 return -ENOENT;
1485         }
1486
1487         mpath = mesh_path_lookup(sdata, dst);
1488         if (!mpath) {
1489                 rcu_read_unlock();
1490                 return -ENOENT;
1491         }
1492
1493         mesh_path_fix_nexthop(mpath, sta);
1494
1495         rcu_read_unlock();
1496         return 0;
1497 }
1498
1499 static void mpath_set_pinfo(struct mesh_path *mpath, u8 *next_hop,
1500                             struct mpath_info *pinfo)
1501 {
1502         struct sta_info *next_hop_sta = rcu_dereference(mpath->next_hop);
1503
1504         if (next_hop_sta)
1505                 memcpy(next_hop, next_hop_sta->sta.addr, ETH_ALEN);
1506         else
1507                 eth_zero_addr(next_hop);
1508
1509         memset(pinfo, 0, sizeof(*pinfo));
1510
1511         pinfo->generation = mesh_paths_generation;
1512
1513         pinfo->filled = MPATH_INFO_FRAME_QLEN |
1514                         MPATH_INFO_SN |
1515                         MPATH_INFO_METRIC |
1516                         MPATH_INFO_EXPTIME |
1517                         MPATH_INFO_DISCOVERY_TIMEOUT |
1518                         MPATH_INFO_DISCOVERY_RETRIES |
1519                         MPATH_INFO_FLAGS;
1520
1521         pinfo->frame_qlen = mpath->frame_queue.qlen;
1522         pinfo->sn = mpath->sn;
1523         pinfo->metric = mpath->metric;
1524         if (time_before(jiffies, mpath->exp_time))
1525                 pinfo->exptime = jiffies_to_msecs(mpath->exp_time - jiffies);
1526         pinfo->discovery_timeout =
1527                         jiffies_to_msecs(mpath->discovery_timeout);
1528         pinfo->discovery_retries = mpath->discovery_retries;
1529         if (mpath->flags & MESH_PATH_ACTIVE)
1530                 pinfo->flags |= NL80211_MPATH_FLAG_ACTIVE;
1531         if (mpath->flags & MESH_PATH_RESOLVING)
1532                 pinfo->flags |= NL80211_MPATH_FLAG_RESOLVING;
1533         if (mpath->flags & MESH_PATH_SN_VALID)
1534                 pinfo->flags |= NL80211_MPATH_FLAG_SN_VALID;
1535         if (mpath->flags & MESH_PATH_FIXED)
1536                 pinfo->flags |= NL80211_MPATH_FLAG_FIXED;
1537         if (mpath->flags & MESH_PATH_RESOLVED)
1538                 pinfo->flags |= NL80211_MPATH_FLAG_RESOLVED;
1539 }
1540
1541 static int ieee80211_get_mpath(struct wiphy *wiphy, struct net_device *dev,
1542                                u8 *dst, u8 *next_hop, struct mpath_info *pinfo)
1543
1544 {
1545         struct ieee80211_sub_if_data *sdata;
1546         struct mesh_path *mpath;
1547
1548         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1549
1550         rcu_read_lock();
1551         mpath = mesh_path_lookup(sdata, dst);
1552         if (!mpath) {
1553                 rcu_read_unlock();
1554                 return -ENOENT;
1555         }
1556         memcpy(dst, mpath->dst, ETH_ALEN);
1557         mpath_set_pinfo(mpath, next_hop, pinfo);
1558         rcu_read_unlock();
1559         return 0;
1560 }
1561
1562 static int ieee80211_dump_mpath(struct wiphy *wiphy, struct net_device *dev,
1563                                 int idx, u8 *dst, u8 *next_hop,
1564                                 struct mpath_info *pinfo)
1565 {
1566         struct ieee80211_sub_if_data *sdata;
1567         struct mesh_path *mpath;
1568
1569         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1570
1571         rcu_read_lock();
1572         mpath = mesh_path_lookup_by_idx(sdata, idx);
1573         if (!mpath) {
1574                 rcu_read_unlock();
1575                 return -ENOENT;
1576         }
1577         memcpy(dst, mpath->dst, ETH_ALEN);
1578         mpath_set_pinfo(mpath, next_hop, pinfo);
1579         rcu_read_unlock();
1580         return 0;
1581 }
1582
1583 static void mpp_set_pinfo(struct mesh_path *mpath, u8 *mpp,
1584                           struct mpath_info *pinfo)
1585 {
1586         memset(pinfo, 0, sizeof(*pinfo));
1587         memcpy(mpp, mpath->mpp, ETH_ALEN);
1588
1589         pinfo->generation = mpp_paths_generation;
1590 }
1591
1592 static int ieee80211_get_mpp(struct wiphy *wiphy, struct net_device *dev,
1593                              u8 *dst, u8 *mpp, struct mpath_info *pinfo)
1594
1595 {
1596         struct ieee80211_sub_if_data *sdata;
1597         struct mesh_path *mpath;
1598
1599         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1600
1601         rcu_read_lock();
1602         mpath = mpp_path_lookup(sdata, dst);
1603         if (!mpath) {
1604                 rcu_read_unlock();
1605                 return -ENOENT;
1606         }
1607         memcpy(dst, mpath->dst, ETH_ALEN);
1608         mpp_set_pinfo(mpath, mpp, pinfo);
1609         rcu_read_unlock();
1610         return 0;
1611 }
1612
1613 static int ieee80211_dump_mpp(struct wiphy *wiphy, struct net_device *dev,
1614                               int idx, u8 *dst, u8 *mpp,
1615                               struct mpath_info *pinfo)
1616 {
1617         struct ieee80211_sub_if_data *sdata;
1618         struct mesh_path *mpath;
1619
1620         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1621
1622         rcu_read_lock();
1623         mpath = mpp_path_lookup_by_idx(sdata, idx);
1624         if (!mpath) {
1625                 rcu_read_unlock();
1626                 return -ENOENT;
1627         }
1628         memcpy(dst, mpath->dst, ETH_ALEN);
1629         mpp_set_pinfo(mpath, mpp, pinfo);
1630         rcu_read_unlock();
1631         return 0;
1632 }
1633
1634 static int ieee80211_get_mesh_config(struct wiphy *wiphy,
1635                                 struct net_device *dev,
1636                                 struct mesh_config *conf)
1637 {
1638         struct ieee80211_sub_if_data *sdata;
1639         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1640
1641         memcpy(conf, &(sdata->u.mesh.mshcfg), sizeof(struct mesh_config));
1642         return 0;
1643 }
1644
1645 static inline bool _chg_mesh_attr(enum nl80211_meshconf_params parm, u32 mask)
1646 {
1647         return (mask >> (parm-1)) & 0x1;
1648 }
1649
1650 static int copy_mesh_setup(struct ieee80211_if_mesh *ifmsh,
1651                 const struct mesh_setup *setup)
1652 {
1653         u8 *new_ie;
1654         const u8 *old_ie;
1655         struct ieee80211_sub_if_data *sdata = container_of(ifmsh,
1656                                         struct ieee80211_sub_if_data, u.mesh);
1657
1658         /* allocate information elements */
1659         new_ie = NULL;
1660         old_ie = ifmsh->ie;
1661
1662         if (setup->ie_len) {
1663                 new_ie = kmemdup(setup->ie, setup->ie_len,
1664                                 GFP_KERNEL);
1665                 if (!new_ie)
1666                         return -ENOMEM;
1667         }
1668         ifmsh->ie_len = setup->ie_len;
1669         ifmsh->ie = new_ie;
1670         kfree(old_ie);
1671
1672         /* now copy the rest of the setup parameters */
1673         ifmsh->mesh_id_len = setup->mesh_id_len;
1674         memcpy(ifmsh->mesh_id, setup->mesh_id, ifmsh->mesh_id_len);
1675         ifmsh->mesh_sp_id = setup->sync_method;
1676         ifmsh->mesh_pp_id = setup->path_sel_proto;
1677         ifmsh->mesh_pm_id = setup->path_metric;
1678         ifmsh->user_mpm = setup->user_mpm;
1679         ifmsh->mesh_auth_id = setup->auth_id;
1680         ifmsh->security = IEEE80211_MESH_SEC_NONE;
1681         if (setup->is_authenticated)
1682                 ifmsh->security |= IEEE80211_MESH_SEC_AUTHED;
1683         if (setup->is_secure)
1684                 ifmsh->security |= IEEE80211_MESH_SEC_SECURED;
1685
1686         /* mcast rate setting in Mesh Node */
1687         memcpy(sdata->vif.bss_conf.mcast_rate, setup->mcast_rate,
1688                                                 sizeof(setup->mcast_rate));
1689         sdata->vif.bss_conf.basic_rates = setup->basic_rates;
1690
1691         sdata->vif.bss_conf.beacon_int = setup->beacon_interval;
1692         sdata->vif.bss_conf.dtim_period = setup->dtim_period;
1693
1694         return 0;
1695 }
1696
1697 static int ieee80211_update_mesh_config(struct wiphy *wiphy,
1698                                         struct net_device *dev, u32 mask,
1699                                         const struct mesh_config *nconf)
1700 {
1701         struct mesh_config *conf;
1702         struct ieee80211_sub_if_data *sdata;
1703         struct ieee80211_if_mesh *ifmsh;
1704
1705         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1706         ifmsh = &sdata->u.mesh;
1707
1708         /* Set the config options which we are interested in setting */
1709         conf = &(sdata->u.mesh.mshcfg);
1710         if (_chg_mesh_attr(NL80211_MESHCONF_RETRY_TIMEOUT, mask))
1711                 conf->dot11MeshRetryTimeout = nconf->dot11MeshRetryTimeout;
1712         if (_chg_mesh_attr(NL80211_MESHCONF_CONFIRM_TIMEOUT, mask))
1713                 conf->dot11MeshConfirmTimeout = nconf->dot11MeshConfirmTimeout;
1714         if (_chg_mesh_attr(NL80211_MESHCONF_HOLDING_TIMEOUT, mask))
1715                 conf->dot11MeshHoldingTimeout = nconf->dot11MeshHoldingTimeout;
1716         if (_chg_mesh_attr(NL80211_MESHCONF_MAX_PEER_LINKS, mask))
1717                 conf->dot11MeshMaxPeerLinks = nconf->dot11MeshMaxPeerLinks;
1718         if (_chg_mesh_attr(NL80211_MESHCONF_MAX_RETRIES, mask))
1719                 conf->dot11MeshMaxRetries = nconf->dot11MeshMaxRetries;
1720         if (_chg_mesh_attr(NL80211_MESHCONF_TTL, mask))
1721                 conf->dot11MeshTTL = nconf->dot11MeshTTL;
1722         if (_chg_mesh_attr(NL80211_MESHCONF_ELEMENT_TTL, mask))
1723                 conf->element_ttl = nconf->element_ttl;
1724         if (_chg_mesh_attr(NL80211_MESHCONF_AUTO_OPEN_PLINKS, mask)) {
1725                 if (ifmsh->user_mpm)
1726                         return -EBUSY;
1727                 conf->auto_open_plinks = nconf->auto_open_plinks;
1728         }
1729         if (_chg_mesh_attr(NL80211_MESHCONF_SYNC_OFFSET_MAX_NEIGHBOR, mask))
1730                 conf->dot11MeshNbrOffsetMaxNeighbor =
1731                         nconf->dot11MeshNbrOffsetMaxNeighbor;
1732         if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES, mask))
1733                 conf->dot11MeshHWMPmaxPREQretries =
1734                         nconf->dot11MeshHWMPmaxPREQretries;
1735         if (_chg_mesh_attr(NL80211_MESHCONF_PATH_REFRESH_TIME, mask))
1736                 conf->path_refresh_time = nconf->path_refresh_time;
1737         if (_chg_mesh_attr(NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT, mask))
1738                 conf->min_discovery_timeout = nconf->min_discovery_timeout;
1739         if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT, mask))
1740                 conf->dot11MeshHWMPactivePathTimeout =
1741                         nconf->dot11MeshHWMPactivePathTimeout;
1742         if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL, mask))
1743                 conf->dot11MeshHWMPpreqMinInterval =
1744                         nconf->dot11MeshHWMPpreqMinInterval;
1745         if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_PERR_MIN_INTERVAL, mask))
1746                 conf->dot11MeshHWMPperrMinInterval =
1747                         nconf->dot11MeshHWMPperrMinInterval;
1748         if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME,
1749                            mask))
1750                 conf->dot11MeshHWMPnetDiameterTraversalTime =
1751                         nconf->dot11MeshHWMPnetDiameterTraversalTime;
1752         if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_ROOTMODE, mask)) {
1753                 conf->dot11MeshHWMPRootMode = nconf->dot11MeshHWMPRootMode;
1754                 ieee80211_mesh_root_setup(ifmsh);
1755         }
1756         if (_chg_mesh_attr(NL80211_MESHCONF_GATE_ANNOUNCEMENTS, mask)) {
1757                 /* our current gate announcement implementation rides on root
1758                  * announcements, so require this ifmsh to also be a root node
1759                  * */
1760                 if (nconf->dot11MeshGateAnnouncementProtocol &&
1761                     !(conf->dot11MeshHWMPRootMode > IEEE80211_ROOTMODE_ROOT)) {
1762                         conf->dot11MeshHWMPRootMode = IEEE80211_PROACTIVE_RANN;
1763                         ieee80211_mesh_root_setup(ifmsh);
1764                 }
1765                 conf->dot11MeshGateAnnouncementProtocol =
1766                         nconf->dot11MeshGateAnnouncementProtocol;
1767         }
1768         if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_RANN_INTERVAL, mask))
1769                 conf->dot11MeshHWMPRannInterval =
1770                         nconf->dot11MeshHWMPRannInterval;
1771         if (_chg_mesh_attr(NL80211_MESHCONF_FORWARDING, mask))
1772                 conf->dot11MeshForwarding = nconf->dot11MeshForwarding;
1773         if (_chg_mesh_attr(NL80211_MESHCONF_RSSI_THRESHOLD, mask)) {
1774                 /* our RSSI threshold implementation is supported only for
1775                  * devices that report signal in dBm.
1776                  */
1777                 if (!ieee80211_hw_check(&sdata->local->hw, SIGNAL_DBM))
1778                         return -ENOTSUPP;
1779                 conf->rssi_threshold = nconf->rssi_threshold;
1780         }
1781         if (_chg_mesh_attr(NL80211_MESHCONF_HT_OPMODE, mask)) {
1782                 conf->ht_opmode = nconf->ht_opmode;
1783                 sdata->vif.bss_conf.ht_operation_mode = nconf->ht_opmode;
1784                 ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_HT);
1785         }
1786         if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_PATH_TO_ROOT_TIMEOUT, mask))
1787                 conf->dot11MeshHWMPactivePathToRootTimeout =
1788                         nconf->dot11MeshHWMPactivePathToRootTimeout;
1789         if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_ROOT_INTERVAL, mask))
1790                 conf->dot11MeshHWMProotInterval =
1791                         nconf->dot11MeshHWMProotInterval;
1792         if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_CONFIRMATION_INTERVAL, mask))
1793                 conf->dot11MeshHWMPconfirmationInterval =
1794                         nconf->dot11MeshHWMPconfirmationInterval;
1795         if (_chg_mesh_attr(NL80211_MESHCONF_POWER_MODE, mask)) {
1796                 conf->power_mode = nconf->power_mode;
1797                 ieee80211_mps_local_status_update(sdata);
1798         }
1799         if (_chg_mesh_attr(NL80211_MESHCONF_AWAKE_WINDOW, mask))
1800                 conf->dot11MeshAwakeWindowDuration =
1801                         nconf->dot11MeshAwakeWindowDuration;
1802         if (_chg_mesh_attr(NL80211_MESHCONF_PLINK_TIMEOUT, mask))
1803                 conf->plink_timeout = nconf->plink_timeout;
1804         ieee80211_mbss_info_change_notify(sdata, BSS_CHANGED_BEACON);
1805         return 0;
1806 }
1807
1808 static int ieee80211_join_mesh(struct wiphy *wiphy, struct net_device *dev,
1809                                const struct mesh_config *conf,
1810                                const struct mesh_setup *setup)
1811 {
1812         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1813         struct ieee80211_if_mesh *ifmsh = &sdata->u.mesh;
1814         int err;
1815
1816         memcpy(&ifmsh->mshcfg, conf, sizeof(struct mesh_config));
1817         err = copy_mesh_setup(ifmsh, setup);
1818         if (err)
1819                 return err;
1820
1821         /* can mesh use other SMPS modes? */
1822         sdata->smps_mode = IEEE80211_SMPS_OFF;
1823         sdata->needed_rx_chains = sdata->local->rx_chains;
1824
1825         mutex_lock(&sdata->local->mtx);
1826         err = ieee80211_vif_use_channel(sdata, &setup->chandef,
1827                                         IEEE80211_CHANCTX_SHARED);
1828         mutex_unlock(&sdata->local->mtx);
1829         if (err)
1830                 return err;
1831
1832         return ieee80211_start_mesh(sdata);
1833 }
1834
1835 static int ieee80211_leave_mesh(struct wiphy *wiphy, struct net_device *dev)
1836 {
1837         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1838
1839         ieee80211_stop_mesh(sdata);
1840         mutex_lock(&sdata->local->mtx);
1841         ieee80211_vif_release_channel(sdata);
1842         mutex_unlock(&sdata->local->mtx);
1843
1844         return 0;
1845 }
1846 #endif
1847
1848 static int ieee80211_change_bss(struct wiphy *wiphy,
1849                                 struct net_device *dev,
1850                                 struct bss_parameters *params)
1851 {
1852         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1853         enum ieee80211_band band;
1854         u32 changed = 0;
1855
1856         if (!sdata_dereference(sdata->u.ap.beacon, sdata))
1857                 return -ENOENT;
1858
1859         band = ieee80211_get_sdata_band(sdata);
1860
1861         if (params->use_cts_prot >= 0) {
1862                 sdata->vif.bss_conf.use_cts_prot = params->use_cts_prot;
1863                 changed |= BSS_CHANGED_ERP_CTS_PROT;
1864         }
1865         if (params->use_short_preamble >= 0) {
1866                 sdata->vif.bss_conf.use_short_preamble =
1867                         params->use_short_preamble;
1868                 changed |= BSS_CHANGED_ERP_PREAMBLE;
1869         }
1870
1871         if (!sdata->vif.bss_conf.use_short_slot &&
1872             band == IEEE80211_BAND_5GHZ) {
1873                 sdata->vif.bss_conf.use_short_slot = true;
1874                 changed |= BSS_CHANGED_ERP_SLOT;
1875         }
1876
1877         if (params->use_short_slot_time >= 0) {
1878                 sdata->vif.bss_conf.use_short_slot =
1879                         params->use_short_slot_time;
1880                 changed |= BSS_CHANGED_ERP_SLOT;
1881         }
1882
1883         if (params->basic_rates) {
1884                 ieee80211_parse_bitrates(&sdata->vif.bss_conf.chandef,
1885                                          wiphy->bands[band],
1886                                          params->basic_rates,
1887                                          params->basic_rates_len,
1888                                          &sdata->vif.bss_conf.basic_rates);
1889                 changed |= BSS_CHANGED_BASIC_RATES;
1890         }
1891
1892         if (params->ap_isolate >= 0) {
1893                 if (params->ap_isolate)
1894                         sdata->flags |= IEEE80211_SDATA_DONT_BRIDGE_PACKETS;
1895                 else
1896                         sdata->flags &= ~IEEE80211_SDATA_DONT_BRIDGE_PACKETS;
1897         }
1898
1899         if (params->ht_opmode >= 0) {
1900                 sdata->vif.bss_conf.ht_operation_mode =
1901                         (u16) params->ht_opmode;
1902                 changed |= BSS_CHANGED_HT;
1903         }
1904
1905         if (params->p2p_ctwindow >= 0) {
1906                 sdata->vif.bss_conf.p2p_noa_attr.oppps_ctwindow &=
1907                                         ~IEEE80211_P2P_OPPPS_CTWINDOW_MASK;
1908                 sdata->vif.bss_conf.p2p_noa_attr.oppps_ctwindow |=
1909                         params->p2p_ctwindow & IEEE80211_P2P_OPPPS_CTWINDOW_MASK;
1910                 changed |= BSS_CHANGED_P2P_PS;
1911         }
1912
1913         if (params->p2p_opp_ps > 0) {
1914                 sdata->vif.bss_conf.p2p_noa_attr.oppps_ctwindow |=
1915                                         IEEE80211_P2P_OPPPS_ENABLE_BIT;
1916                 changed |= BSS_CHANGED_P2P_PS;
1917         } else if (params->p2p_opp_ps == 0) {
1918                 sdata->vif.bss_conf.p2p_noa_attr.oppps_ctwindow &=
1919                                         ~IEEE80211_P2P_OPPPS_ENABLE_BIT;
1920                 changed |= BSS_CHANGED_P2P_PS;
1921         }
1922
1923         ieee80211_bss_info_change_notify(sdata, changed);
1924
1925         return 0;
1926 }
1927
1928 static int ieee80211_set_txq_params(struct wiphy *wiphy,
1929                                     struct net_device *dev,
1930                                     struct ieee80211_txq_params *params)
1931 {
1932         struct ieee80211_local *local = wiphy_priv(wiphy);
1933         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1934         struct ieee80211_tx_queue_params p;
1935
1936         if (!local->ops->conf_tx)
1937                 return -EOPNOTSUPP;
1938
1939         if (local->hw.queues < IEEE80211_NUM_ACS)
1940                 return -EOPNOTSUPP;
1941
1942         memset(&p, 0, sizeof(p));
1943         p.aifs = params->aifs;
1944         p.cw_max = params->cwmax;
1945         p.cw_min = params->cwmin;
1946         p.txop = params->txop;
1947
1948         /*
1949          * Setting tx queue params disables u-apsd because it's only
1950          * called in master mode.
1951          */
1952         p.uapsd = false;
1953
1954         sdata->tx_conf[params->ac] = p;
1955         if (drv_conf_tx(local, sdata, params->ac, &p)) {
1956                 wiphy_debug(local->hw.wiphy,
1957                             "failed to set TX queue parameters for AC %d\n",
1958                             params->ac);
1959                 return -EINVAL;
1960         }
1961
1962         ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_QOS);
1963
1964         return 0;
1965 }
1966
1967 #ifdef CONFIG_PM
1968 static int ieee80211_suspend(struct wiphy *wiphy,
1969                              struct cfg80211_wowlan *wowlan)
1970 {
1971         return __ieee80211_suspend(wiphy_priv(wiphy), wowlan);
1972 }
1973
1974 static int ieee80211_resume(struct wiphy *wiphy)
1975 {
1976         return __ieee80211_resume(wiphy_priv(wiphy));
1977 }
1978 #else
1979 #define ieee80211_suspend NULL
1980 #define ieee80211_resume NULL
1981 #endif
1982
1983 static int ieee80211_scan(struct wiphy *wiphy,
1984                           struct cfg80211_scan_request *req)
1985 {
1986         struct ieee80211_sub_if_data *sdata;
1987
1988         sdata = IEEE80211_WDEV_TO_SUB_IF(req->wdev);
1989
1990         switch (ieee80211_vif_type_p2p(&sdata->vif)) {
1991         case NL80211_IFTYPE_STATION:
1992         case NL80211_IFTYPE_ADHOC:
1993         case NL80211_IFTYPE_MESH_POINT:
1994         case NL80211_IFTYPE_P2P_CLIENT:
1995         case NL80211_IFTYPE_P2P_DEVICE:
1996                 break;
1997         case NL80211_IFTYPE_P2P_GO:
1998                 if (sdata->local->ops->hw_scan)
1999                         break;
2000                 /*
2001                  * FIXME: implement NoA while scanning in software,
2002                  * for now fall through to allow scanning only when
2003                  * beaconing hasn't been configured yet
2004                  */
2005         case NL80211_IFTYPE_AP:
2006                 /*
2007                  * If the scan has been forced (and the driver supports
2008                  * forcing), don't care about being beaconing already.
2009                  * This will create problems to the attached stations (e.g. all
2010                  * the  frames sent while scanning on other channel will be
2011                  * lost)
2012                  */
2013                 if (sdata->u.ap.beacon &&
2014                     (!(wiphy->features & NL80211_FEATURE_AP_SCAN) ||
2015                      !(req->flags & NL80211_SCAN_FLAG_AP)))
2016                         return -EOPNOTSUPP;
2017                 break;
2018         default:
2019                 return -EOPNOTSUPP;
2020         }
2021
2022         return ieee80211_request_scan(sdata, req);
2023 }
2024
2025 static int
2026 ieee80211_sched_scan_start(struct wiphy *wiphy,
2027                            struct net_device *dev,
2028                            struct cfg80211_sched_scan_request *req)
2029 {
2030         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2031
2032         if (!sdata->local->ops->sched_scan_start)
2033                 return -EOPNOTSUPP;
2034
2035         return ieee80211_request_sched_scan_start(sdata, req);
2036 }
2037
2038 static int
2039 ieee80211_sched_scan_stop(struct wiphy *wiphy, struct net_device *dev)
2040 {
2041         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2042
2043         if (!sdata->local->ops->sched_scan_stop)
2044                 return -EOPNOTSUPP;
2045
2046         return ieee80211_request_sched_scan_stop(sdata);
2047 }
2048
2049 static int ieee80211_auth(struct wiphy *wiphy, struct net_device *dev,
2050                           struct cfg80211_auth_request *req)
2051 {
2052         return ieee80211_mgd_auth(IEEE80211_DEV_TO_SUB_IF(dev), req);
2053 }
2054
2055 static int ieee80211_assoc(struct wiphy *wiphy, struct net_device *dev,
2056                            struct cfg80211_assoc_request *req)
2057 {
2058         return ieee80211_mgd_assoc(IEEE80211_DEV_TO_SUB_IF(dev), req);
2059 }
2060
2061 static int ieee80211_deauth(struct wiphy *wiphy, struct net_device *dev,
2062                             struct cfg80211_deauth_request *req)
2063 {
2064         return ieee80211_mgd_deauth(IEEE80211_DEV_TO_SUB_IF(dev), req);
2065 }
2066
2067 static int ieee80211_disassoc(struct wiphy *wiphy, struct net_device *dev,
2068                               struct cfg80211_disassoc_request *req)
2069 {
2070         return ieee80211_mgd_disassoc(IEEE80211_DEV_TO_SUB_IF(dev), req);
2071 }
2072
2073 static int ieee80211_join_ibss(struct wiphy *wiphy, struct net_device *dev,
2074                                struct cfg80211_ibss_params *params)
2075 {
2076         return ieee80211_ibss_join(IEEE80211_DEV_TO_SUB_IF(dev), params);
2077 }
2078
2079 static int ieee80211_leave_ibss(struct wiphy *wiphy, struct net_device *dev)
2080 {
2081         return ieee80211_ibss_leave(IEEE80211_DEV_TO_SUB_IF(dev));
2082 }
2083
2084 static int ieee80211_join_ocb(struct wiphy *wiphy, struct net_device *dev,
2085                               struct ocb_setup *setup)
2086 {
2087         return ieee80211_ocb_join(IEEE80211_DEV_TO_SUB_IF(dev), setup);
2088 }
2089
2090 static int ieee80211_leave_ocb(struct wiphy *wiphy, struct net_device *dev)
2091 {
2092         return ieee80211_ocb_leave(IEEE80211_DEV_TO_SUB_IF(dev));
2093 }
2094
2095 static int ieee80211_set_mcast_rate(struct wiphy *wiphy, struct net_device *dev,
2096                                     int rate[IEEE80211_NUM_BANDS])
2097 {
2098         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2099
2100         memcpy(sdata->vif.bss_conf.mcast_rate, rate,
2101                sizeof(int) * IEEE80211_NUM_BANDS);
2102
2103         return 0;
2104 }
2105
2106 static int ieee80211_set_wiphy_params(struct wiphy *wiphy, u32 changed)
2107 {
2108         struct ieee80211_local *local = wiphy_priv(wiphy);
2109         int err;
2110
2111         if (changed & WIPHY_PARAM_FRAG_THRESHOLD) {
2112                 ieee80211_check_fast_xmit_all(local);
2113
2114                 err = drv_set_frag_threshold(local, wiphy->frag_threshold);
2115
2116                 if (err) {
2117                         ieee80211_check_fast_xmit_all(local);
2118                         return err;
2119                 }
2120         }
2121
2122         if ((changed & WIPHY_PARAM_COVERAGE_CLASS) ||
2123             (changed & WIPHY_PARAM_DYN_ACK)) {
2124                 s16 coverage_class;
2125
2126                 coverage_class = changed & WIPHY_PARAM_COVERAGE_CLASS ?
2127                                         wiphy->coverage_class : -1;
2128                 err = drv_set_coverage_class(local, coverage_class);
2129
2130                 if (err)
2131                         return err;
2132         }
2133
2134         if (changed & WIPHY_PARAM_RTS_THRESHOLD) {
2135                 err = drv_set_rts_threshold(local, wiphy->rts_threshold);
2136
2137                 if (err)
2138                         return err;
2139         }
2140
2141         if (changed & WIPHY_PARAM_RETRY_SHORT) {
2142                 if (wiphy->retry_short > IEEE80211_MAX_TX_RETRY)
2143                         return -EINVAL;
2144                 local->hw.conf.short_frame_max_tx_count = wiphy->retry_short;
2145         }
2146         if (changed & WIPHY_PARAM_RETRY_LONG) {
2147                 if (wiphy->retry_long > IEEE80211_MAX_TX_RETRY)
2148                         return -EINVAL;
2149                 local->hw.conf.long_frame_max_tx_count = wiphy->retry_long;
2150         }
2151         if (changed &
2152             (WIPHY_PARAM_RETRY_SHORT | WIPHY_PARAM_RETRY_LONG))
2153                 ieee80211_hw_config(local, IEEE80211_CONF_CHANGE_RETRY_LIMITS);
2154
2155         return 0;
2156 }
2157
2158 static int ieee80211_set_tx_power(struct wiphy *wiphy,
2159                                   struct wireless_dev *wdev,
2160                                   enum nl80211_tx_power_setting type, int mbm)
2161 {
2162         struct ieee80211_local *local = wiphy_priv(wiphy);
2163         struct ieee80211_sub_if_data *sdata;
2164         enum nl80211_tx_power_setting txp_type = type;
2165         bool update_txp_type = false;
2166
2167         if (wdev) {
2168                 sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
2169
2170                 switch (type) {
2171                 case NL80211_TX_POWER_AUTOMATIC:
2172                         sdata->user_power_level = IEEE80211_UNSET_POWER_LEVEL;
2173                         txp_type = NL80211_TX_POWER_LIMITED;
2174                         break;
2175                 case NL80211_TX_POWER_LIMITED:
2176                 case NL80211_TX_POWER_FIXED:
2177                         if (mbm < 0 || (mbm % 100))
2178                                 return -EOPNOTSUPP;
2179                         sdata->user_power_level = MBM_TO_DBM(mbm);
2180                         break;
2181                 }
2182
2183                 if (txp_type != sdata->vif.bss_conf.txpower_type) {
2184                         update_txp_type = true;
2185                         sdata->vif.bss_conf.txpower_type = txp_type;
2186                 }
2187
2188                 ieee80211_recalc_txpower(sdata, update_txp_type);
2189
2190                 return 0;
2191         }
2192
2193         switch (type) {
2194         case NL80211_TX_POWER_AUTOMATIC:
2195                 local->user_power_level = IEEE80211_UNSET_POWER_LEVEL;
2196                 txp_type = NL80211_TX_POWER_LIMITED;
2197                 break;
2198         case NL80211_TX_POWER_LIMITED:
2199         case NL80211_TX_POWER_FIXED:
2200                 if (mbm < 0 || (mbm % 100))
2201                         return -EOPNOTSUPP;
2202                 local->user_power_level = MBM_TO_DBM(mbm);
2203                 break;
2204         }
2205
2206         mutex_lock(&local->iflist_mtx);
2207         list_for_each_entry(sdata, &local->interfaces, list) {
2208                 sdata->user_power_level = local->user_power_level;
2209                 if (txp_type != sdata->vif.bss_conf.txpower_type)
2210                         update_txp_type = true;
2211                 sdata->vif.bss_conf.txpower_type = txp_type;
2212         }
2213         list_for_each_entry(sdata, &local->interfaces, list)
2214                 ieee80211_recalc_txpower(sdata, update_txp_type);
2215         mutex_unlock(&local->iflist_mtx);
2216
2217         return 0;
2218 }
2219
2220 static int ieee80211_get_tx_power(struct wiphy *wiphy,
2221                                   struct wireless_dev *wdev,
2222                                   int *dbm)
2223 {
2224         struct ieee80211_local *local = wiphy_priv(wiphy);
2225         struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
2226
2227         if (local->ops->get_txpower)
2228                 return drv_get_txpower(local, sdata, dbm);
2229
2230         if (!local->use_chanctx)
2231                 *dbm = local->hw.conf.power_level;
2232         else
2233                 *dbm = sdata->vif.bss_conf.txpower;
2234
2235         return 0;
2236 }
2237
2238 static int ieee80211_set_wds_peer(struct wiphy *wiphy, struct net_device *dev,
2239                                   const u8 *addr)
2240 {
2241         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2242
2243         memcpy(&sdata->u.wds.remote_addr, addr, ETH_ALEN);
2244
2245         return 0;
2246 }
2247
2248 static void ieee80211_rfkill_poll(struct wiphy *wiphy)
2249 {
2250         struct ieee80211_local *local = wiphy_priv(wiphy);
2251
2252         drv_rfkill_poll(local);
2253 }
2254
2255 #ifdef CONFIG_NL80211_TESTMODE
2256 static int ieee80211_testmode_cmd(struct wiphy *wiphy,
2257                                   struct wireless_dev *wdev,
2258                                   void *data, int len)
2259 {
2260         struct ieee80211_local *local = wiphy_priv(wiphy);
2261         struct ieee80211_vif *vif = NULL;
2262
2263         if (!local->ops->testmode_cmd)
2264                 return -EOPNOTSUPP;
2265
2266         if (wdev) {
2267                 struct ieee80211_sub_if_data *sdata;
2268
2269                 sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
2270                 if (sdata->flags & IEEE80211_SDATA_IN_DRIVER)
2271                         vif = &sdata->vif;
2272         }
2273
2274         return local->ops->testmode_cmd(&local->hw, vif, data, len);
2275 }
2276
2277 static int ieee80211_testmode_dump(struct wiphy *wiphy,
2278                                    struct sk_buff *skb,
2279                                    struct netlink_callback *cb,
2280                                    void *data, int len)
2281 {
2282         struct ieee80211_local *local = wiphy_priv(wiphy);
2283
2284         if (!local->ops->testmode_dump)
2285                 return -EOPNOTSUPP;
2286
2287         return local->ops->testmode_dump(&local->hw, skb, cb, data, len);
2288 }
2289 #endif
2290
2291 int __ieee80211_request_smps_ap(struct ieee80211_sub_if_data *sdata,
2292                                 enum ieee80211_smps_mode smps_mode)
2293 {
2294         struct sta_info *sta;
2295         enum ieee80211_smps_mode old_req;
2296
2297         if (WARN_ON_ONCE(sdata->vif.type != NL80211_IFTYPE_AP))
2298                 return -EINVAL;
2299
2300         if (sdata->vif.bss_conf.chandef.width == NL80211_CHAN_WIDTH_20_NOHT)
2301                 return 0;
2302
2303         old_req = sdata->u.ap.req_smps;
2304         sdata->u.ap.req_smps = smps_mode;
2305
2306         /* AUTOMATIC doesn't mean much for AP - don't allow it */
2307         if (old_req == smps_mode ||
2308             smps_mode == IEEE80211_SMPS_AUTOMATIC)
2309                 return 0;
2310
2311          /* If no associated stations, there's no need to do anything */
2312         if (!atomic_read(&sdata->u.ap.num_mcast_sta)) {
2313                 sdata->smps_mode = smps_mode;
2314                 ieee80211_queue_work(&sdata->local->hw, &sdata->recalc_smps);
2315                 return 0;
2316         }
2317
2318         ht_dbg(sdata,
2319                "SMPS %d requested in AP mode, sending Action frame to %d stations\n",
2320                smps_mode, atomic_read(&sdata->u.ap.num_mcast_sta));
2321
2322         mutex_lock(&sdata->local->sta_mtx);
2323         list_for_each_entry(sta, &sdata->local->sta_list, list) {
2324                 /*
2325                  * Only stations associated to our AP and
2326                  * associated VLANs
2327                  */
2328                 if (sta->sdata->bss != &sdata->u.ap)
2329                         continue;
2330
2331                 /* This station doesn't support MIMO - skip it */
2332                 if (sta_info_tx_streams(sta) == 1)
2333                         continue;
2334
2335                 /*
2336                  * Don't wake up a STA just to send the action frame
2337                  * unless we are getting more restrictive.
2338                  */
2339                 if (test_sta_flag(sta, WLAN_STA_PS_STA) &&
2340                     !ieee80211_smps_is_restrictive(sta->known_smps_mode,
2341                                                    smps_mode)) {
2342                         ht_dbg(sdata, "Won't send SMPS to sleeping STA %pM\n",
2343                                sta->sta.addr);
2344                         continue;
2345                 }
2346
2347                 /*
2348                  * If the STA is not authorized, wait until it gets
2349                  * authorized and the action frame will be sent then.
2350                  */
2351                 if (!test_sta_flag(sta, WLAN_STA_AUTHORIZED))
2352                         continue;
2353
2354                 ht_dbg(sdata, "Sending SMPS to %pM\n", sta->sta.addr);
2355                 ieee80211_send_smps_action(sdata, smps_mode, sta->sta.addr,
2356                                            sdata->vif.bss_conf.bssid);
2357         }
2358         mutex_unlock(&sdata->local->sta_mtx);
2359
2360         sdata->smps_mode = smps_mode;
2361         ieee80211_queue_work(&sdata->local->hw, &sdata->recalc_smps);
2362
2363         return 0;
2364 }
2365
2366 int __ieee80211_request_smps_mgd(struct ieee80211_sub_if_data *sdata,
2367                                  enum ieee80211_smps_mode smps_mode)
2368 {
2369         const u8 *ap;
2370         enum ieee80211_smps_mode old_req;
2371         int err;
2372         struct sta_info *sta;
2373         bool tdls_peer_found = false;
2374
2375         lockdep_assert_held(&sdata->wdev.mtx);
2376
2377         if (WARN_ON_ONCE(sdata->vif.type != NL80211_IFTYPE_STATION))
2378                 return -EINVAL;
2379
2380         old_req = sdata->u.mgd.req_smps;
2381         sdata->u.mgd.req_smps = smps_mode;
2382
2383         if (old_req == smps_mode &&
2384             smps_mode != IEEE80211_SMPS_AUTOMATIC)
2385                 return 0;
2386
2387         /*
2388          * If not associated, or current association is not an HT
2389          * association, there's no need to do anything, just store
2390          * the new value until we associate.
2391          */
2392         if (!sdata->u.mgd.associated ||
2393             sdata->vif.bss_conf.chandef.width == NL80211_CHAN_WIDTH_20_NOHT)
2394                 return 0;
2395
2396         ap = sdata->u.mgd.associated->bssid;
2397
2398         rcu_read_lock();
2399         list_for_each_entry_rcu(sta, &sdata->local->sta_list, list) {
2400                 if (!sta->sta.tdls || sta->sdata != sdata || !sta->uploaded ||
2401                     !test_sta_flag(sta, WLAN_STA_AUTHORIZED))
2402                         continue;
2403
2404                 tdls_peer_found = true;
2405                 break;
2406         }
2407         rcu_read_unlock();
2408
2409         if (smps_mode == IEEE80211_SMPS_AUTOMATIC) {
2410                 if (tdls_peer_found || !sdata->u.mgd.powersave)
2411                         smps_mode = IEEE80211_SMPS_OFF;
2412                 else
2413                         smps_mode = IEEE80211_SMPS_DYNAMIC;
2414         }
2415
2416         /* send SM PS frame to AP */
2417         err = ieee80211_send_smps_action(sdata, smps_mode,
2418                                          ap, ap);
2419         if (err)
2420                 sdata->u.mgd.req_smps = old_req;
2421         else if (smps_mode != IEEE80211_SMPS_OFF && tdls_peer_found)
2422                 ieee80211_teardown_tdls_peers(sdata);
2423
2424         return err;
2425 }
2426
2427 static int ieee80211_set_power_mgmt(struct wiphy *wiphy, struct net_device *dev,
2428                                     bool enabled, int timeout)
2429 {
2430         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2431         struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
2432
2433         if (sdata->vif.type != NL80211_IFTYPE_STATION)
2434                 return -EOPNOTSUPP;
2435
2436         if (!ieee80211_hw_check(&local->hw, SUPPORTS_PS))
2437                 return -EOPNOTSUPP;
2438
2439         if (enabled == sdata->u.mgd.powersave &&
2440             timeout == local->dynamic_ps_forced_timeout)
2441                 return 0;
2442
2443         sdata->u.mgd.powersave = enabled;
2444         local->dynamic_ps_forced_timeout = timeout;
2445
2446         /* no change, but if automatic follow powersave */
2447         sdata_lock(sdata);
2448         __ieee80211_request_smps_mgd(sdata, sdata->u.mgd.req_smps);
2449         sdata_unlock(sdata);
2450
2451         if (ieee80211_hw_check(&local->hw, SUPPORTS_DYNAMIC_PS))
2452                 ieee80211_hw_config(local, IEEE80211_CONF_CHANGE_PS);
2453
2454         ieee80211_recalc_ps(local, -1);
2455         ieee80211_recalc_ps_vif(sdata);
2456
2457         return 0;
2458 }
2459
2460 static int ieee80211_set_cqm_rssi_config(struct wiphy *wiphy,
2461                                          struct net_device *dev,
2462                                          s32 rssi_thold, u32 rssi_hyst)
2463 {
2464         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2465         struct ieee80211_vif *vif = &sdata->vif;
2466         struct ieee80211_bss_conf *bss_conf = &vif->bss_conf;
2467
2468         if (rssi_thold == bss_conf->cqm_rssi_thold &&
2469             rssi_hyst == bss_conf->cqm_rssi_hyst)
2470                 return 0;
2471
2472         bss_conf->cqm_rssi_thold = rssi_thold;
2473         bss_conf->cqm_rssi_hyst = rssi_hyst;
2474
2475         /* tell the driver upon association, unless already associated */
2476         if (sdata->u.mgd.associated &&
2477             sdata->vif.driver_flags & IEEE80211_VIF_SUPPORTS_CQM_RSSI)
2478                 ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_CQM);
2479
2480         return 0;
2481 }
2482
2483 static int ieee80211_set_bitrate_mask(struct wiphy *wiphy,
2484                                       struct net_device *dev,
2485                                       const u8 *addr,
2486                                       const struct cfg80211_bitrate_mask *mask)
2487 {
2488         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2489         struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
2490         int i, ret;
2491
2492         if (!ieee80211_sdata_running(sdata))
2493                 return -ENETDOWN;
2494
2495         if (ieee80211_hw_check(&local->hw, HAS_RATE_CONTROL)) {
2496                 ret = drv_set_bitrate_mask(local, sdata, mask);
2497                 if (ret)
2498                         return ret;
2499         }
2500
2501         for (i = 0; i < IEEE80211_NUM_BANDS; i++) {
2502                 struct ieee80211_supported_band *sband = wiphy->bands[i];
2503                 int j;
2504
2505                 sdata->rc_rateidx_mask[i] = mask->control[i].legacy;
2506                 memcpy(sdata->rc_rateidx_mcs_mask[i], mask->control[i].ht_mcs,
2507                        sizeof(mask->control[i].ht_mcs));
2508                 memcpy(sdata->rc_rateidx_vht_mcs_mask[i],
2509                        mask->control[i].vht_mcs,
2510                        sizeof(mask->control[i].vht_mcs));
2511
2512                 sdata->rc_has_mcs_mask[i] = false;
2513                 sdata->rc_has_vht_mcs_mask[i] = false;
2514                 if (!sband)
2515                         continue;
2516
2517                 for (j = 0; j < IEEE80211_HT_MCS_MASK_LEN; j++) {
2518                         if (~sdata->rc_rateidx_mcs_mask[i][j])
2519                                 sdata->rc_has_mcs_mask[i] = true;
2520
2521                         if (~sdata->rc_rateidx_vht_mcs_mask[i][j])
2522                                 sdata->rc_has_vht_mcs_mask[i] = true;
2523
2524                         if (sdata->rc_has_mcs_mask[i] &&
2525                             sdata->rc_has_vht_mcs_mask[i])
2526                                 break;
2527                 }
2528         }
2529
2530         return 0;
2531 }
2532
2533 static bool ieee80211_coalesce_started_roc(struct ieee80211_local *local,
2534                                            struct ieee80211_roc_work *new_roc,
2535                                            struct ieee80211_roc_work *cur_roc)
2536 {
2537         unsigned long now = jiffies;
2538         unsigned long remaining = cur_roc->hw_start_time +
2539                                   msecs_to_jiffies(cur_roc->duration) -
2540                                   now;
2541
2542         if (WARN_ON(!cur_roc->started || !cur_roc->hw_begun))
2543                 return false;
2544
2545         /* if it doesn't fit entirely, schedule a new one */
2546         if (new_roc->duration > jiffies_to_msecs(remaining))
2547                 return false;
2548
2549         ieee80211_handle_roc_started(new_roc);
2550
2551         /* add to dependents so we send the expired event properly */
2552         list_add_tail(&new_roc->list, &cur_roc->dependents);
2553         return true;
2554 }
2555
2556 static u64 ieee80211_mgmt_tx_cookie(struct ieee80211_local *local)
2557 {
2558         lockdep_assert_held(&local->mtx);
2559
2560         local->roc_cookie_counter++;
2561
2562         /* wow, you wrapped 64 bits ... more likely a bug */
2563         if (WARN_ON(local->roc_cookie_counter == 0))
2564                 local->roc_cookie_counter++;
2565
2566         return local->roc_cookie_counter;
2567 }
2568
2569 static int ieee80211_start_roc_work(struct ieee80211_local *local,
2570                                     struct ieee80211_sub_if_data *sdata,
2571                                     struct ieee80211_channel *channel,
2572                                     unsigned int duration, u64 *cookie,
2573                                     struct sk_buff *txskb,
2574                                     enum ieee80211_roc_type type)
2575 {
2576         struct ieee80211_roc_work *roc, *tmp;
2577         bool queued = false;
2578         int ret;
2579
2580         lockdep_assert_held(&local->mtx);
2581
2582         if (local->use_chanctx && !local->ops->remain_on_channel)
2583                 return -EOPNOTSUPP;
2584
2585         roc = kzalloc(sizeof(*roc), GFP_KERNEL);
2586         if (!roc)
2587                 return -ENOMEM;
2588
2589         /*
2590          * If the duration is zero, then the driver
2591          * wouldn't actually do anything. Set it to
2592          * 10 for now.
2593          *
2594          * TODO: cancel the off-channel operation
2595          *       when we get the SKB's TX status and
2596          *       the wait time was zero before.
2597          */
2598         if (!duration)
2599                 duration = 10;
2600
2601         roc->chan = channel;
2602         roc->duration = duration;
2603         roc->req_duration = duration;
2604         roc->frame = txskb;
2605         roc->type = type;
2606         roc->sdata = sdata;
2607         INIT_DELAYED_WORK(&roc->work, ieee80211_sw_roc_work);
2608         INIT_LIST_HEAD(&roc->dependents);
2609
2610         /*
2611          * cookie is either the roc cookie (for normal roc)
2612          * or the SKB (for mgmt TX)
2613          */
2614         if (!txskb) {
2615                 roc->cookie = ieee80211_mgmt_tx_cookie(local);
2616                 *cookie = roc->cookie;
2617         } else {
2618                 roc->mgmt_tx_cookie = *cookie;
2619         }
2620
2621         /* if there's one pending or we're scanning, queue this one */
2622         if (!list_empty(&local->roc_list) ||
2623             local->scanning || ieee80211_is_radar_required(local))
2624                 goto out_check_combine;
2625
2626         /* if not HW assist, just queue & schedule work */
2627         if (!local->ops->remain_on_channel) {
2628                 ieee80211_queue_delayed_work(&local->hw, &roc->work, 0);
2629                 goto out_queue;
2630         }
2631
2632         /* otherwise actually kick it off here (for error handling) */
2633
2634         ret = drv_remain_on_channel(local, sdata, channel, duration, type);
2635         if (ret) {
2636                 kfree(roc);
2637                 return ret;
2638         }
2639
2640         roc->started = true;
2641         goto out_queue;
2642
2643  out_check_combine:
2644         list_for_each_entry(tmp, &local->roc_list, list) {
2645                 if (tmp->chan != channel || tmp->sdata != sdata)
2646                         continue;
2647
2648                 /*
2649                  * Extend this ROC if possible:
2650                  *
2651                  * If it hasn't started yet, just increase the duration
2652                  * and add the new one to the list of dependents.
2653                  * If the type of the new ROC has higher priority, modify the
2654                  * type of the previous one to match that of the new one.
2655                  */
2656                 if (!tmp->started) {
2657                         list_add_tail(&roc->list, &tmp->dependents);
2658                         tmp->duration = max(tmp->duration, roc->duration);
2659                         tmp->type = max(tmp->type, roc->type);
2660                         queued = true;
2661                         break;
2662                 }
2663
2664                 /* If it has already started, it's more difficult ... */
2665                 if (local->ops->remain_on_channel) {
2666                         /*
2667                          * In the offloaded ROC case, if it hasn't begun, add
2668                          * this new one to the dependent list to be handled
2669                          * when the master one begins. If it has begun,
2670                          * check if it fits entirely within the existing one,
2671                          * in which case it will just be dependent as well.
2672                          * Otherwise, schedule it by itself.
2673                          */
2674                         if (!tmp->hw_begun) {
2675                                 list_add_tail(&roc->list, &tmp->dependents);
2676                                 queued = true;
2677                                 break;
2678                         }
2679
2680                         if (ieee80211_coalesce_started_roc(local, roc, tmp))
2681                                 queued = true;
2682                 } else if (del_timer_sync(&tmp->work.timer)) {
2683                         unsigned long new_end;
2684
2685                         /*
2686                          * In the software ROC case, cancel the timer, if
2687                          * that fails then the finish work is already
2688                          * queued/pending and thus we queue the new ROC
2689                          * normally, if that succeeds then we can extend
2690                          * the timer duration and TX the frame (if any.)
2691                          */
2692
2693                         list_add_tail(&roc->list, &tmp->dependents);
2694                         queued = true;
2695
2696                         new_end = jiffies + msecs_to_jiffies(roc->duration);
2697
2698                         /* ok, it was started & we canceled timer */
2699                         if (time_after(new_end, tmp->work.timer.expires))
2700                                 mod_timer(&tmp->work.timer, new_end);
2701                         else
2702                                 add_timer(&tmp->work.timer);
2703
2704                         ieee80211_handle_roc_started(roc);
2705                 }
2706                 break;
2707         }
2708
2709  out_queue:
2710         if (!queued)
2711                 list_add_tail(&roc->list, &local->roc_list);
2712
2713         return 0;
2714 }
2715
2716 static int ieee80211_remain_on_channel(struct wiphy *wiphy,
2717                                        struct wireless_dev *wdev,
2718                                        struct ieee80211_channel *chan,
2719                                        unsigned int duration,
2720                                        u64 *cookie)
2721 {
2722         struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
2723         struct ieee80211_local *local = sdata->local;
2724         int ret;
2725
2726         mutex_lock(&local->mtx);
2727         ret = ieee80211_start_roc_work(local, sdata, chan,
2728                                        duration, cookie, NULL,
2729                                        IEEE80211_ROC_TYPE_NORMAL);
2730         mutex_unlock(&local->mtx);
2731
2732         return ret;
2733 }
2734
2735 static int ieee80211_cancel_roc(struct ieee80211_local *local,
2736                                 u64 cookie, bool mgmt_tx)
2737 {
2738         struct ieee80211_roc_work *roc, *tmp, *found = NULL;
2739         int ret;
2740
2741         mutex_lock(&local->mtx);
2742         list_for_each_entry_safe(roc, tmp, &local->roc_list, list) {
2743                 struct ieee80211_roc_work *dep, *tmp2;
2744
2745                 list_for_each_entry_safe(dep, tmp2, &roc->dependents, list) {
2746                         if (!mgmt_tx && dep->cookie != cookie)
2747                                 continue;
2748                         else if (mgmt_tx && dep->mgmt_tx_cookie != cookie)
2749                                 continue;
2750                         /* found dependent item -- just remove it */
2751                         list_del(&dep->list);
2752                         mutex_unlock(&local->mtx);
2753
2754                         ieee80211_roc_notify_destroy(dep, true);
2755                         return 0;
2756                 }
2757
2758                 if (!mgmt_tx && roc->cookie != cookie)
2759                         continue;
2760                 else if (mgmt_tx && roc->mgmt_tx_cookie != cookie)
2761                         continue;
2762
2763                 found = roc;
2764                 break;
2765         }
2766
2767         if (!found) {
2768                 mutex_unlock(&local->mtx);
2769                 return -ENOENT;
2770         }
2771
2772         /*
2773          * We found the item to cancel, so do that. Note that it
2774          * may have dependents, which we also cancel (and send
2775          * the expired signal for.) Not doing so would be quite
2776          * tricky here, but we may need to fix it later.
2777          */
2778
2779         if (local->ops->remain_on_channel) {
2780                 if (found->started) {
2781                         ret = drv_cancel_remain_on_channel(local);
2782                         if (WARN_ON_ONCE(ret)) {
2783                                 mutex_unlock(&local->mtx);
2784                                 return ret;
2785                         }
2786                 }
2787
2788                 list_del(&found->list);
2789
2790                 if (found->started)
2791                         ieee80211_start_next_roc(local);
2792                 mutex_unlock(&local->mtx);
2793
2794                 ieee80211_roc_notify_destroy(found, true);
2795         } else {
2796                 /* work may be pending so use it all the time */
2797                 found->abort = true;
2798                 ieee80211_queue_delayed_work(&local->hw, &found->work, 0);
2799
2800                 mutex_unlock(&local->mtx);
2801
2802                 /* work will clean up etc */
2803                 flush_delayed_work(&found->work);
2804                 WARN_ON(!found->to_be_freed);
2805                 kfree(found);
2806         }
2807
2808         return 0;
2809 }
2810
2811 static int ieee80211_cancel_remain_on_channel(struct wiphy *wiphy,
2812                                               struct wireless_dev *wdev,
2813                                               u64 cookie)
2814 {
2815         struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
2816         struct ieee80211_local *local = sdata->local;
2817
2818         return ieee80211_cancel_roc(local, cookie, false);
2819 }
2820
2821 static int ieee80211_start_radar_detection(struct wiphy *wiphy,
2822                                            struct net_device *dev,
2823                                            struct cfg80211_chan_def *chandef,
2824                                            u32 cac_time_ms)
2825 {
2826         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2827         struct ieee80211_local *local = sdata->local;
2828         int err;
2829
2830         mutex_lock(&local->mtx);
2831         if (!list_empty(&local->roc_list) || local->scanning) {
2832                 err = -EBUSY;
2833                 goto out_unlock;
2834         }
2835
2836         /* whatever, but channel contexts should not complain about that one */
2837         sdata->smps_mode = IEEE80211_SMPS_OFF;
2838         sdata->needed_rx_chains = local->rx_chains;
2839
2840         err = ieee80211_vif_use_channel(sdata, chandef,
2841                                         IEEE80211_CHANCTX_SHARED);
2842         if (err)
2843                 goto out_unlock;
2844
2845         ieee80211_queue_delayed_work(&sdata->local->hw,
2846                                      &sdata->dfs_cac_timer_work,
2847                                      msecs_to_jiffies(cac_time_ms));
2848
2849  out_unlock:
2850         mutex_unlock(&local->mtx);
2851         return err;
2852 }
2853
2854 static struct cfg80211_beacon_data *
2855 cfg80211_beacon_dup(struct cfg80211_beacon_data *beacon)
2856 {
2857         struct cfg80211_beacon_data *new_beacon;
2858         u8 *pos;
2859         int len;
2860
2861         len = beacon->head_len + beacon->tail_len + beacon->beacon_ies_len +
2862               beacon->proberesp_ies_len + beacon->assocresp_ies_len +
2863               beacon->probe_resp_len;
2864
2865         new_beacon = kzalloc(sizeof(*new_beacon) + len, GFP_KERNEL);
2866         if (!new_beacon)
2867                 return NULL;
2868
2869         pos = (u8 *)(new_beacon + 1);
2870         if (beacon->head_len) {
2871                 new_beacon->head_len = beacon->head_len;
2872                 new_beacon->head = pos;
2873                 memcpy(pos, beacon->head, beacon->head_len);
2874                 pos += beacon->head_len;
2875         }
2876         if (beacon->tail_len) {
2877                 new_beacon->tail_len = beacon->tail_len;
2878                 new_beacon->tail = pos;
2879                 memcpy(pos, beacon->tail, beacon->tail_len);
2880                 pos += beacon->tail_len;
2881         }
2882         if (beacon->beacon_ies_len) {
2883                 new_beacon->beacon_ies_len = beacon->beacon_ies_len;
2884                 new_beacon->beacon_ies = pos;
2885                 memcpy(pos, beacon->beacon_ies, beacon->beacon_ies_len);
2886                 pos += beacon->beacon_ies_len;
2887         }
2888         if (beacon->proberesp_ies_len) {
2889                 new_beacon->proberesp_ies_len = beacon->proberesp_ies_len;
2890                 new_beacon->proberesp_ies = pos;
2891                 memcpy(pos, beacon->proberesp_ies, beacon->proberesp_ies_len);
2892                 pos += beacon->proberesp_ies_len;
2893         }
2894         if (beacon->assocresp_ies_len) {
2895                 new_beacon->assocresp_ies_len = beacon->assocresp_ies_len;
2896                 new_beacon->assocresp_ies = pos;
2897                 memcpy(pos, beacon->assocresp_ies, beacon->assocresp_ies_len);
2898                 pos += beacon->assocresp_ies_len;
2899         }
2900         if (beacon->probe_resp_len) {
2901                 new_beacon->probe_resp_len = beacon->probe_resp_len;
2902                 beacon->probe_resp = pos;
2903                 memcpy(pos, beacon->probe_resp, beacon->probe_resp_len);
2904                 pos += beacon->probe_resp_len;
2905         }
2906
2907         return new_beacon;
2908 }
2909
2910 void ieee80211_csa_finish(struct ieee80211_vif *vif)
2911 {
2912         struct ieee80211_sub_if_data *sdata = vif_to_sdata(vif);
2913
2914         ieee80211_queue_work(&sdata->local->hw,
2915                              &sdata->csa_finalize_work);
2916 }
2917 EXPORT_SYMBOL(ieee80211_csa_finish);
2918
2919 static int ieee80211_set_after_csa_beacon(struct ieee80211_sub_if_data *sdata,
2920                                           u32 *changed)
2921 {
2922         int err;
2923
2924         switch (sdata->vif.type) {
2925         case NL80211_IFTYPE_AP:
2926                 err = ieee80211_assign_beacon(sdata, sdata->u.ap.next_beacon,
2927                                               NULL);
2928                 kfree(sdata->u.ap.next_beacon);
2929                 sdata->u.ap.next_beacon = NULL;
2930
2931                 if (err < 0)
2932                         return err;
2933                 *changed |= err;
2934                 break;
2935         case NL80211_IFTYPE_ADHOC:
2936                 err = ieee80211_ibss_finish_csa(sdata);
2937                 if (err < 0)
2938                         return err;
2939                 *changed |= err;
2940                 break;
2941 #ifdef CONFIG_MAC80211_MESH
2942         case NL80211_IFTYPE_MESH_POINT:
2943                 err = ieee80211_mesh_finish_csa(sdata);
2944                 if (err < 0)
2945                         return err;
2946                 *changed |= err;
2947                 break;
2948 #endif
2949         default:
2950                 WARN_ON(1);
2951                 return -EINVAL;
2952         }
2953
2954         return 0;
2955 }
2956
2957 static int __ieee80211_csa_finalize(struct ieee80211_sub_if_data *sdata)
2958 {
2959         struct ieee80211_local *local = sdata->local;
2960         u32 changed = 0;
2961         int err;
2962
2963         sdata_assert_lock(sdata);
2964         lockdep_assert_held(&local->mtx);
2965         lockdep_assert_held(&local->chanctx_mtx);
2966
2967         /*
2968          * using reservation isn't immediate as it may be deferred until later
2969          * with multi-vif. once reservation is complete it will re-schedule the
2970          * work with no reserved_chanctx so verify chandef to check if it
2971          * completed successfully
2972          */
2973
2974         if (sdata->reserved_chanctx) {
2975                 /*
2976                  * with multi-vif csa driver may call ieee80211_csa_finish()
2977                  * many times while waiting for other interfaces to use their
2978                  * reservations
2979                  */
2980                 if (sdata->reserved_ready)
2981                         return 0;
2982
2983                 return ieee80211_vif_use_reserved_context(sdata);
2984         }
2985
2986         if (!cfg80211_chandef_identical(&sdata->vif.bss_conf.chandef,
2987                                         &sdata->csa_chandef))
2988                 return -EINVAL;
2989
2990         sdata->vif.csa_active = false;
2991
2992         err = ieee80211_set_after_csa_beacon(sdata, &changed);
2993         if (err)
2994                 return err;
2995
2996         ieee80211_bss_info_change_notify(sdata, changed);
2997
2998         if (sdata->csa_block_tx) {
2999                 ieee80211_wake_vif_queues(local, sdata,
3000                                           IEEE80211_QUEUE_STOP_REASON_CSA);
3001                 sdata->csa_block_tx = false;
3002         }
3003
3004         err = drv_post_channel_switch(sdata);
3005         if (err)
3006                 return err;
3007
3008         cfg80211_ch_switch_notify(sdata->dev, &sdata->csa_chandef);
3009
3010         return 0;
3011 }
3012
3013 static void ieee80211_csa_finalize(struct ieee80211_sub_if_data *sdata)
3014 {
3015         if (__ieee80211_csa_finalize(sdata)) {
3016                 sdata_info(sdata, "failed to finalize CSA, disconnecting\n");
3017                 cfg80211_stop_iface(sdata->local->hw.wiphy, &sdata->wdev,
3018                                     GFP_KERNEL);
3019         }
3020 }
3021
3022 void ieee80211_csa_finalize_work(struct work_struct *work)
3023 {
3024         struct ieee80211_sub_if_data *sdata =
3025                 container_of(work, struct ieee80211_sub_if_data,
3026                              csa_finalize_work);
3027         struct ieee80211_local *local = sdata->local;
3028
3029         sdata_lock(sdata);
3030         mutex_lock(&local->mtx);
3031         mutex_lock(&local->chanctx_mtx);
3032
3033         /* AP might have been stopped while waiting for the lock. */
3034         if (!sdata->vif.csa_active)
3035                 goto unlock;
3036
3037         if (!ieee80211_sdata_running(sdata))
3038                 goto unlock;
3039
3040         ieee80211_csa_finalize(sdata);
3041
3042 unlock:
3043         mutex_unlock(&local->chanctx_mtx);
3044         mutex_unlock(&local->mtx);
3045         sdata_unlock(sdata);
3046 }
3047
3048 static int ieee80211_set_csa_beacon(struct ieee80211_sub_if_data *sdata,
3049                                     struct cfg80211_csa_settings *params,
3050                                     u32 *changed)
3051 {
3052         struct ieee80211_csa_settings csa = {};
3053         int err;
3054
3055         switch (sdata->vif.type) {
3056         case NL80211_IFTYPE_AP:
3057                 sdata->u.ap.next_beacon =
3058                         cfg80211_beacon_dup(&params->beacon_after);
3059                 if (!sdata->u.ap.next_beacon)
3060                         return -ENOMEM;
3061
3062                 /*
3063                  * With a count of 0, we don't have to wait for any
3064                  * TBTT before switching, so complete the CSA
3065                  * immediately.  In theory, with a count == 1 we
3066                  * should delay the switch until just before the next
3067                  * TBTT, but that would complicate things so we switch
3068                  * immediately too.  If we would delay the switch
3069                  * until the next TBTT, we would have to set the probe
3070                  * response here.
3071                  *
3072                  * TODO: A channel switch with count <= 1 without
3073                  * sending a CSA action frame is kind of useless,
3074                  * because the clients won't know we're changing
3075                  * channels.  The action frame must be implemented
3076                  * either here or in the userspace.
3077                  */
3078                 if (params->count <= 1)
3079                         break;
3080
3081                 if ((params->n_counter_offsets_beacon >
3082                      IEEE80211_MAX_CSA_COUNTERS_NUM) ||
3083                     (params->n_counter_offsets_presp >
3084                      IEEE80211_MAX_CSA_COUNTERS_NUM))
3085                         return -EINVAL;
3086
3087                 csa.counter_offsets_beacon = params->counter_offsets_beacon;
3088                 csa.counter_offsets_presp = params->counter_offsets_presp;
3089                 csa.n_counter_offsets_beacon = params->n_counter_offsets_beacon;
3090                 csa.n_counter_offsets_presp = params->n_counter_offsets_presp;
3091                 csa.count = params->count;
3092
3093                 err = ieee80211_assign_beacon(sdata, &params->beacon_csa, &csa);
3094                 if (err < 0) {
3095                         kfree(sdata->u.ap.next_beacon);
3096                         return err;
3097                 }
3098                 *changed |= err;
3099
3100                 break;
3101         case NL80211_IFTYPE_ADHOC:
3102                 if (!sdata->vif.bss_conf.ibss_joined)
3103                         return -EINVAL;
3104
3105                 if (params->chandef.width != sdata->u.ibss.chandef.width)
3106                         return -EINVAL;
3107
3108                 switch (params->chandef.width) {
3109                 case NL80211_CHAN_WIDTH_40:
3110                         if (cfg80211_get_chandef_type(&params->chandef) !=
3111                             cfg80211_get_chandef_type(&sdata->u.ibss.chandef))
3112                                 return -EINVAL;
3113                 case NL80211_CHAN_WIDTH_5:
3114                 case NL80211_CHAN_WIDTH_10:
3115                 case NL80211_CHAN_WIDTH_20_NOHT:
3116                 case NL80211_CHAN_WIDTH_20:
3117                         break;
3118                 default:
3119                         return -EINVAL;
3120                 }
3121
3122                 /* changes into another band are not supported */
3123                 if (sdata->u.ibss.chandef.chan->band !=
3124                     params->chandef.chan->band)
3125                         return -EINVAL;
3126
3127                 /* see comments in the NL80211_IFTYPE_AP block */
3128                 if (params->count > 1) {
3129                         err = ieee80211_ibss_csa_beacon(sdata, params);
3130                         if (err < 0)
3131                                 return err;
3132                         *changed |= err;
3133                 }
3134
3135                 ieee80211_send_action_csa(sdata, params);
3136
3137                 break;
3138 #ifdef CONFIG_MAC80211_MESH
3139         case NL80211_IFTYPE_MESH_POINT: {
3140                 struct ieee80211_if_mesh *ifmsh = &sdata->u.mesh;
3141
3142                 if (params->chandef.width != sdata->vif.bss_conf.chandef.width)
3143                         return -EINVAL;
3144
3145                 /* changes into another band are not supported */
3146                 if (sdata->vif.bss_conf.chandef.chan->band !=
3147                     params->chandef.chan->band)
3148                         return -EINVAL;
3149
3150                 if (ifmsh->csa_role == IEEE80211_MESH_CSA_ROLE_NONE) {
3151                         ifmsh->csa_role = IEEE80211_MESH_CSA_ROLE_INIT;
3152                         if (!ifmsh->pre_value)
3153                                 ifmsh->pre_value = 1;
3154                         else
3155                                 ifmsh->pre_value++;
3156                 }
3157
3158                 /* see comments in the NL80211_IFTYPE_AP block */
3159                 if (params->count > 1) {
3160                         err = ieee80211_mesh_csa_beacon(sdata, params);
3161                         if (err < 0) {
3162                                 ifmsh->csa_role = IEEE80211_MESH_CSA_ROLE_NONE;
3163                                 return err;
3164                         }
3165                         *changed |= err;
3166                 }
3167
3168                 if (ifmsh->csa_role == IEEE80211_MESH_CSA_ROLE_INIT)
3169                         ieee80211_send_action_csa(sdata, params);
3170
3171                 break;
3172                 }
3173 #endif
3174         default:
3175                 return -EOPNOTSUPP;
3176         }
3177
3178         return 0;
3179 }
3180
3181 static int
3182 __ieee80211_channel_switch(struct wiphy *wiphy, struct net_device *dev,
3183                            struct cfg80211_csa_settings *params)
3184 {
3185         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
3186         struct ieee80211_local *local = sdata->local;
3187         struct ieee80211_channel_switch ch_switch;
3188         struct ieee80211_chanctx_conf *conf;
3189         struct ieee80211_chanctx *chanctx;
3190         u32 changed = 0;
3191         int err;
3192
3193         sdata_assert_lock(sdata);
3194         lockdep_assert_held(&local->mtx);
3195
3196         if (!list_empty(&local->roc_list) || local->scanning)
3197                 return -EBUSY;
3198
3199         if (sdata->wdev.cac_started)
3200                 return -EBUSY;
3201
3202         if (cfg80211_chandef_identical(&params->chandef,
3203                                        &sdata->vif.bss_conf.chandef))
3204                 return -EINVAL;
3205
3206         /* don't allow another channel switch if one is already active. */
3207         if (sdata->vif.csa_active)
3208                 return -EBUSY;
3209
3210         mutex_lock(&local->chanctx_mtx);
3211         conf = rcu_dereference_protected(sdata->vif.chanctx_conf,
3212                                          lockdep_is_held(&local->chanctx_mtx));
3213         if (!conf) {
3214                 err = -EBUSY;
3215                 goto out;
3216         }
3217
3218         chanctx = container_of(conf, struct ieee80211_chanctx, conf);
3219         if (!chanctx) {
3220                 err = -EBUSY;
3221                 goto out;
3222         }
3223
3224         ch_switch.timestamp = 0;
3225         ch_switch.device_timestamp = 0;
3226         ch_switch.block_tx = params->block_tx;
3227         ch_switch.chandef = params->chandef;
3228         ch_switch.count = params->count;
3229
3230         err = drv_pre_channel_switch(sdata, &ch_switch);
3231         if (err)
3232                 goto out;
3233
3234         err = ieee80211_vif_reserve_chanctx(sdata, &params->chandef,
3235                                             chanctx->mode,
3236                                             params->radar_required);
3237         if (err)
3238                 goto out;
3239
3240         /* if reservation is invalid then this will fail */
3241         err = ieee80211_check_combinations(sdata, NULL, chanctx->mode, 0);
3242         if (err) {
3243                 ieee80211_vif_unreserve_chanctx(sdata);
3244                 goto out;
3245         }
3246
3247         err = ieee80211_set_csa_beacon(sdata, params, &changed);
3248         if (err) {
3249                 ieee80211_vif_unreserve_chanctx(sdata);
3250                 goto out;
3251         }
3252
3253         sdata->csa_chandef = params->chandef;
3254         sdata->csa_block_tx = params->block_tx;
3255         sdata->vif.csa_active = true;
3256
3257         if (sdata->csa_block_tx)
3258                 ieee80211_stop_vif_queues(local, sdata,
3259                                           IEEE80211_QUEUE_STOP_REASON_CSA);
3260
3261         cfg80211_ch_switch_started_notify(sdata->dev, &sdata->csa_chandef,
3262                                           params->count);
3263
3264         if (changed) {
3265                 ieee80211_bss_info_change_notify(sdata, changed);
3266                 drv_channel_switch_beacon(sdata, &params->chandef);
3267         } else {
3268                 /* if the beacon didn't change, we can finalize immediately */
3269                 ieee80211_csa_finalize(sdata);
3270         }
3271
3272 out:
3273         mutex_unlock(&local->chanctx_mtx);
3274         return err;
3275 }
3276
3277 int ieee80211_channel_switch(struct wiphy *wiphy, struct net_device *dev,
3278                              struct cfg80211_csa_settings *params)
3279 {
3280         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
3281         struct ieee80211_local *local = sdata->local;
3282         int err;
3283
3284         mutex_lock(&local->mtx);
3285         err = __ieee80211_channel_switch(wiphy, dev, params);
3286         mutex_unlock(&local->mtx);
3287
3288         return err;
3289 }
3290
3291 static struct sk_buff *ieee80211_make_ack_skb(struct ieee80211_local *local,
3292                                               struct sk_buff *skb, u64 *cookie,
3293                                               gfp_t gfp)
3294 {
3295         unsigned long spin_flags;
3296         struct sk_buff *ack_skb;
3297         int id;
3298
3299         ack_skb = skb_copy(skb, gfp);
3300         if (!ack_skb)
3301                 return ERR_PTR(-ENOMEM);
3302
3303         spin_lock_irqsave(&local->ack_status_lock, spin_flags);
3304         id = idr_alloc(&local->ack_status_frames, ack_skb,
3305                        1, 0x10000, GFP_ATOMIC);
3306         spin_unlock_irqrestore(&local->ack_status_lock, spin_flags);
3307
3308         if (id < 0) {
3309                 kfree_skb(ack_skb);
3310                 return ERR_PTR(-ENOMEM);
3311         }
3312
3313         IEEE80211_SKB_CB(skb)->ack_frame_id = id;
3314
3315         *cookie = ieee80211_mgmt_tx_cookie(local);
3316         IEEE80211_SKB_CB(ack_skb)->ack.cookie = *cookie;
3317
3318         return ack_skb;
3319 }
3320
3321 static int ieee80211_mgmt_tx(struct wiphy *wiphy, struct wireless_dev *wdev,
3322                              struct cfg80211_mgmt_tx_params *params,
3323                              u64 *cookie)
3324 {
3325         struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
3326         struct ieee80211_local *local = sdata->local;
3327         struct sk_buff *skb, *ack_skb;
3328         struct sta_info *sta;
3329         const struct ieee80211_mgmt *mgmt = (void *)params->buf;
3330         bool need_offchan = false;
3331         u32 flags;
3332         int ret;
3333         u8 *data;
3334
3335         if (params->dont_wait_for_ack)
3336                 flags = IEEE80211_TX_CTL_NO_ACK;
3337         else
3338                 flags = IEEE80211_TX_INTFL_NL80211_FRAME_TX |
3339                         IEEE80211_TX_CTL_REQ_TX_STATUS;
3340
3341         if (params->no_cck)
3342                 flags |= IEEE80211_TX_CTL_NO_CCK_RATE;
3343
3344         switch (sdata->vif.type) {
3345         case NL80211_IFTYPE_ADHOC:
3346                 if (!sdata->vif.bss_conf.ibss_joined)
3347                         need_offchan = true;
3348                 /* fall through */
3349 #ifdef CONFIG_MAC80211_MESH
3350         case NL80211_IFTYPE_MESH_POINT:
3351                 if (ieee80211_vif_is_mesh(&sdata->vif) &&
3352                     !sdata->u.mesh.mesh_id_len)
3353                         need_offchan = true;
3354                 /* fall through */
3355 #endif
3356         case NL80211_IFTYPE_AP:
3357         case NL80211_IFTYPE_AP_VLAN:
3358         case NL80211_IFTYPE_P2P_GO:
3359                 if (sdata->vif.type != NL80211_IFTYPE_ADHOC &&
3360                     !ieee80211_vif_is_mesh(&sdata->vif) &&
3361                     !rcu_access_pointer(sdata->bss->beacon))
3362                         need_offchan = true;
3363                 if (!ieee80211_is_action(mgmt->frame_control) ||
3364                     mgmt->u.action.category == WLAN_CATEGORY_PUBLIC ||
3365                     mgmt->u.action.category == WLAN_CATEGORY_SELF_PROTECTED ||
3366                     mgmt->u.action.category == WLAN_CATEGORY_SPECTRUM_MGMT)
3367                         break;
3368                 rcu_read_lock();
3369                 sta = sta_info_get(sdata, mgmt->da);
3370                 rcu_read_unlock();
3371                 if (!sta)
3372                         return -ENOLINK;
3373                 break;
3374         case NL80211_IFTYPE_STATION:
3375         case NL80211_IFTYPE_P2P_CLIENT:
3376                 sdata_lock(sdata);
3377                 if (!sdata->u.mgd.associated ||
3378                     (params->offchan && params->wait &&
3379                      local->ops->remain_on_channel &&
3380                      memcmp(sdata->u.mgd.associated->bssid,
3381                             mgmt->bssid, ETH_ALEN)))
3382                         need_offchan = true;
3383                 sdata_unlock(sdata);
3384                 break;
3385         case NL80211_IFTYPE_P2P_DEVICE:
3386                 need_offchan = true;
3387                 break;
3388         default:
3389                 return -EOPNOTSUPP;
3390         }
3391
3392         /* configurations requiring offchan cannot work if no channel has been
3393          * specified
3394          */
3395         if (need_offchan && !params->chan)
3396                 return -EINVAL;
3397
3398         mutex_lock(&local->mtx);
3399
3400         /* Check if the operating channel is the requested channel */
3401         if (!need_offchan) {
3402                 struct ieee80211_chanctx_conf *chanctx_conf;
3403
3404                 rcu_read_lock();
3405                 chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf);
3406
3407                 if (chanctx_conf) {
3408                         need_offchan = params->chan &&
3409                                        (params->chan !=
3410                                         chanctx_conf->def.chan);
3411                 } else if (!params->chan) {
3412                         ret = -EINVAL;
3413                         rcu_read_unlock();
3414                         goto out_unlock;
3415                 } else {
3416                         need_offchan = true;
3417                 }
3418                 rcu_read_unlock();
3419         }
3420
3421         if (need_offchan && !params->offchan) {
3422                 ret = -EBUSY;
3423                 goto out_unlock;
3424         }
3425
3426         skb = dev_alloc_skb(local->hw.extra_tx_headroom + params->len);
3427         if (!skb) {
3428                 ret = -ENOMEM;
3429                 goto out_unlock;
3430         }
3431         skb_reserve(skb, local->hw.extra_tx_headroom);
3432
3433         data = skb_put(skb, params->len);
3434         memcpy(data, params->buf, params->len);
3435
3436         /* Update CSA counters */
3437         if (sdata->vif.csa_active &&
3438             (sdata->vif.type == NL80211_IFTYPE_AP ||
3439              sdata->vif.type == NL80211_IFTYPE_MESH_POINT ||
3440              sdata->vif.type == NL80211_IFTYPE_ADHOC) &&
3441             params->n_csa_offsets) {
3442                 int i;
3443                 struct beacon_data *beacon = NULL;
3444
3445                 rcu_read_lock();
3446
3447                 if (sdata->vif.type == NL80211_IFTYPE_AP)
3448                         beacon = rcu_dereference(sdata->u.ap.beacon);
3449                 else if (sdata->vif.type == NL80211_IFTYPE_ADHOC)
3450                         beacon = rcu_dereference(sdata->u.ibss.presp);
3451                 else if (ieee80211_vif_is_mesh(&sdata->vif))
3452                         beacon = rcu_dereference(sdata->u.mesh.beacon);
3453
3454                 if (beacon)
3455                         for (i = 0; i < params->n_csa_offsets; i++)
3456                                 data[params->csa_offsets[i]] =
3457                                         beacon->csa_current_counter;
3458
3459                 rcu_read_unlock();
3460         }
3461
3462         IEEE80211_SKB_CB(skb)->flags = flags;
3463
3464         skb->dev = sdata->dev;
3465
3466         if (!params->dont_wait_for_ack) {
3467                 /* make a copy to preserve the frame contents
3468                  * in case of encryption.
3469                  */
3470                 ack_skb = ieee80211_make_ack_skb(local, skb, cookie,
3471                                                  GFP_KERNEL);
3472                 if (IS_ERR(ack_skb)) {
3473                         ret = PTR_ERR(ack_skb);
3474                         kfree_skb(skb);
3475                         goto out_unlock;
3476                 }
3477         } else {
3478                 /* for cookie below */
3479                 ack_skb = skb;
3480         }
3481
3482         if (!need_offchan) {
3483                 ieee80211_tx_skb(sdata, skb);
3484                 ret = 0;
3485                 goto out_unlock;
3486         }
3487
3488         IEEE80211_SKB_CB(skb)->flags |= IEEE80211_TX_CTL_TX_OFFCHAN |
3489                                         IEEE80211_TX_INTFL_OFFCHAN_TX_OK;
3490         if (ieee80211_hw_check(&local->hw, QUEUE_CONTROL))
3491                 IEEE80211_SKB_CB(skb)->hw_queue =
3492                         local->hw.offchannel_tx_hw_queue;
3493
3494         /* This will handle all kinds of coalescing and immediate TX */
3495         ret = ieee80211_start_roc_work(local, sdata, params->chan,
3496                                        params->wait, cookie, skb,
3497                                        IEEE80211_ROC_TYPE_MGMT_TX);
3498         if (ret)
3499                 kfree_skb(skb);
3500  out_unlock:
3501         mutex_unlock(&local->mtx);
3502         return ret;
3503 }
3504
3505 static int ieee80211_mgmt_tx_cancel_wait(struct wiphy *wiphy,
3506                                          struct wireless_dev *wdev,
3507                                          u64 cookie)
3508 {
3509         struct ieee80211_local *local = wiphy_priv(wiphy);
3510
3511         return ieee80211_cancel_roc(local, cookie, true);
3512 }
3513
3514 static void ieee80211_mgmt_frame_register(struct wiphy *wiphy,
3515                                           struct wireless_dev *wdev,
3516                                           u16 frame_type, bool reg)
3517 {
3518         struct ieee80211_local *local = wiphy_priv(wiphy);
3519
3520         switch (frame_type) {
3521         case IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_PROBE_REQ:
3522                 if (reg)
3523                         local->probe_req_reg++;
3524                 else
3525                         local->probe_req_reg--;
3526
3527                 if (!local->open_count)
3528                         break;
3529
3530                 ieee80211_queue_work(&local->hw, &local->reconfig_filter);
3531                 break;
3532         default:
3533                 break;
3534         }
3535 }
3536
3537 static int ieee80211_set_antenna(struct wiphy *wiphy, u32 tx_ant, u32 rx_ant)
3538 {
3539         struct ieee80211_local *local = wiphy_priv(wiphy);
3540
3541         if (local->started)
3542                 return -EOPNOTSUPP;
3543
3544         return drv_set_antenna(local, tx_ant, rx_ant);
3545 }
3546
3547 static int ieee80211_get_antenna(struct wiphy *wiphy, u32 *tx_ant, u32 *rx_ant)
3548 {
3549         struct ieee80211_local *local = wiphy_priv(wiphy);
3550
3551         return drv_get_antenna(local, tx_ant, rx_ant);
3552 }
3553
3554 static int ieee80211_set_rekey_data(struct wiphy *wiphy,
3555                                     struct net_device *dev,
3556                                     struct cfg80211_gtk_rekey_data *data)
3557 {
3558         struct ieee80211_local *local = wiphy_priv(wiphy);
3559         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
3560
3561         if (!local->ops->set_rekey_data)
3562                 return -EOPNOTSUPP;
3563
3564         drv_set_rekey_data(local, sdata, data);
3565
3566         return 0;
3567 }
3568
3569 static int ieee80211_probe_client(struct wiphy *wiphy, struct net_device *dev,
3570                                   const u8 *peer, u64 *cookie)
3571 {
3572         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
3573         struct ieee80211_local *local = sdata->local;
3574         struct ieee80211_qos_hdr *nullfunc;
3575         struct sk_buff *skb, *ack_skb;
3576         int size = sizeof(*nullfunc);
3577         __le16 fc;
3578         bool qos;
3579         struct ieee80211_tx_info *info;
3580         struct sta_info *sta;
3581         struct ieee80211_chanctx_conf *chanctx_conf;
3582         enum ieee80211_band band;
3583         int ret;
3584
3585         /* the lock is needed to assign the cookie later */
3586         mutex_lock(&local->mtx);
3587
3588         rcu_read_lock();
3589         chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf);
3590         if (WARN_ON(!chanctx_conf)) {
3591                 ret = -EINVAL;
3592                 goto unlock;
3593         }
3594         band = chanctx_conf->def.chan->band;
3595         sta = sta_info_get_bss(sdata, peer);
3596         if (sta) {
3597                 qos = sta->sta.wme;
3598         } else {
3599                 ret = -ENOLINK;
3600                 goto unlock;
3601         }
3602
3603         if (qos) {
3604                 fc = cpu_to_le16(IEEE80211_FTYPE_DATA |
3605                                  IEEE80211_STYPE_QOS_NULLFUNC |
3606                                  IEEE80211_FCTL_FROMDS);
3607         } else {
3608                 size -= 2;
3609                 fc = cpu_to_le16(IEEE80211_FTYPE_DATA |
3610                                  IEEE80211_STYPE_NULLFUNC |
3611                                  IEEE80211_FCTL_FROMDS);
3612         }
3613
3614         skb = dev_alloc_skb(local->hw.extra_tx_headroom + size);
3615         if (!skb) {
3616                 ret = -ENOMEM;
3617                 goto unlock;
3618         }
3619
3620         skb->dev = dev;
3621
3622         skb_reserve(skb, local->hw.extra_tx_headroom);
3623
3624         nullfunc = (void *) skb_put(skb, size);
3625         nullfunc->frame_control = fc;
3626         nullfunc->duration_id = 0;
3627         memcpy(nullfunc->addr1, sta->sta.addr, ETH_ALEN);
3628         memcpy(nullfunc->addr2, sdata->vif.addr, ETH_ALEN);
3629         memcpy(nullfunc->addr3, sdata->vif.addr, ETH_ALEN);
3630         nullfunc->seq_ctrl = 0;
3631
3632         info = IEEE80211_SKB_CB(skb);
3633
3634         info->flags |= IEEE80211_TX_CTL_REQ_TX_STATUS |
3635                        IEEE80211_TX_INTFL_NL80211_FRAME_TX;
3636         info->band = band;
3637
3638         skb_set_queue_mapping(skb, IEEE80211_AC_VO);
3639         skb->priority = 7;
3640         if (qos)
3641                 nullfunc->qos_ctrl = cpu_to_le16(7);
3642
3643         ack_skb = ieee80211_make_ack_skb(local, skb, cookie, GFP_ATOMIC);
3644         if (IS_ERR(ack_skb)) {
3645                 kfree_skb(skb);
3646                 ret = PTR_ERR(ack_skb);
3647                 goto unlock;
3648         }
3649
3650         local_bh_disable();
3651         ieee80211_xmit(sdata, sta, skb);
3652         local_bh_enable();
3653
3654         ret = 0;
3655 unlock:
3656         rcu_read_unlock();
3657         mutex_unlock(&local->mtx);
3658
3659         return ret;
3660 }
3661
3662 static int ieee80211_cfg_get_channel(struct wiphy *wiphy,
3663                                      struct wireless_dev *wdev,
3664                                      struct cfg80211_chan_def *chandef)
3665 {
3666         struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
3667         struct ieee80211_local *local = wiphy_priv(wiphy);
3668         struct ieee80211_chanctx_conf *chanctx_conf;
3669         int ret = -ENODATA;
3670
3671         rcu_read_lock();
3672         chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf);
3673         if (chanctx_conf) {
3674                 *chandef = sdata->vif.bss_conf.chandef;
3675                 ret = 0;
3676         } else if (local->open_count > 0 &&
3677                    local->open_count == local->monitors &&
3678                    sdata->vif.type == NL80211_IFTYPE_MONITOR) {
3679                 if (local->use_chanctx)
3680                         *chandef = local->monitor_chandef;
3681                 else
3682                         *chandef = local->_oper_chandef;
3683                 ret = 0;
3684         }
3685         rcu_read_unlock();
3686
3687         return ret;
3688 }
3689
3690 #ifdef CONFIG_PM
3691 static void ieee80211_set_wakeup(struct wiphy *wiphy, bool enabled)
3692 {
3693         drv_set_wakeup(wiphy_priv(wiphy), enabled);
3694 }
3695 #endif
3696
3697 static int ieee80211_set_qos_map(struct wiphy *wiphy,
3698                                  struct net_device *dev,
3699                                  struct cfg80211_qos_map *qos_map)
3700 {
3701         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
3702         struct mac80211_qos_map *new_qos_map, *old_qos_map;
3703
3704         if (qos_map) {
3705                 new_qos_map = kzalloc(sizeof(*new_qos_map), GFP_KERNEL);
3706                 if (!new_qos_map)
3707                         return -ENOMEM;
3708                 memcpy(&new_qos_map->qos_map, qos_map, sizeof(*qos_map));
3709         } else {
3710                 /* A NULL qos_map was passed to disable QoS mapping */
3711                 new_qos_map = NULL;
3712         }
3713
3714         old_qos_map = sdata_dereference(sdata->qos_map, sdata);
3715         rcu_assign_pointer(sdata->qos_map, new_qos_map);
3716         if (old_qos_map)
3717                 kfree_rcu(old_qos_map, rcu_head);
3718
3719         return 0;
3720 }
3721
3722 static int ieee80211_set_ap_chanwidth(struct wiphy *wiphy,
3723                                       struct net_device *dev,
3724                                       struct cfg80211_chan_def *chandef)
3725 {
3726         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
3727         int ret;
3728         u32 changed = 0;
3729
3730         ret = ieee80211_vif_change_bandwidth(sdata, chandef, &changed);
3731         if (ret == 0)
3732                 ieee80211_bss_info_change_notify(sdata, changed);
3733
3734         return ret;
3735 }
3736
3737 static int ieee80211_add_tx_ts(struct wiphy *wiphy, struct net_device *dev,
3738                                u8 tsid, const u8 *peer, u8 up,
3739                                u16 admitted_time)
3740 {
3741         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
3742         struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
3743         int ac = ieee802_1d_to_ac[up];
3744
3745         if (sdata->vif.type != NL80211_IFTYPE_STATION)
3746                 return -EOPNOTSUPP;
3747
3748         if (!(sdata->wmm_acm & BIT(up)))
3749                 return -EINVAL;
3750
3751         if (ifmgd->tx_tspec[ac].admitted_time)
3752                 return -EBUSY;
3753
3754         if (admitted_time) {
3755                 ifmgd->tx_tspec[ac].admitted_time = 32 * admitted_time;
3756                 ifmgd->tx_tspec[ac].tsid = tsid;
3757                 ifmgd->tx_tspec[ac].up = up;
3758         }
3759
3760         return 0;
3761 }
3762
3763 static int ieee80211_del_tx_ts(struct wiphy *wiphy, struct net_device *dev,
3764                                u8 tsid, const u8 *peer)
3765 {
3766         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
3767         struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
3768         struct ieee80211_local *local = wiphy_priv(wiphy);
3769         int ac;
3770
3771         for (ac = 0; ac < IEEE80211_NUM_ACS; ac++) {
3772                 struct ieee80211_sta_tx_tspec *tx_tspec = &ifmgd->tx_tspec[ac];
3773
3774                 /* skip unused entries */
3775                 if (!tx_tspec->admitted_time)
3776                         continue;
3777
3778                 if (tx_tspec->tsid != tsid)
3779                         continue;
3780
3781                 /* due to this new packets will be reassigned to non-ACM ACs */
3782                 tx_tspec->up = -1;
3783
3784                 /* Make sure that all packets have been sent to avoid to
3785                  * restore the QoS params on packets that are still on the
3786                  * queues.
3787                  */
3788                 synchronize_net();
3789                 ieee80211_flush_queues(local, sdata, false);
3790
3791                 /* restore the normal QoS parameters
3792                  * (unconditionally to avoid races)
3793                  */
3794                 tx_tspec->action = TX_TSPEC_ACTION_STOP_DOWNGRADE;
3795                 tx_tspec->downgraded = false;
3796                 ieee80211_sta_handle_tspec_ac_params(sdata);
3797
3798                 /* finally clear all the data */
3799                 memset(tx_tspec, 0, sizeof(*tx_tspec));
3800
3801                 return 0;
3802         }
3803
3804         return -ENOENT;
3805 }
3806
3807 const struct cfg80211_ops mac80211_config_ops = {
3808         .add_virtual_intf = ieee80211_add_iface,
3809         .del_virtual_intf = ieee80211_del_iface,
3810         .change_virtual_intf = ieee80211_change_iface,
3811         .start_p2p_device = ieee80211_start_p2p_device,
3812         .stop_p2p_device = ieee80211_stop_p2p_device,
3813         .add_key = ieee80211_add_key,
3814         .del_key = ieee80211_del_key,
3815         .get_key = ieee80211_get_key,
3816         .set_default_key = ieee80211_config_default_key,
3817         .set_default_mgmt_key = ieee80211_config_default_mgmt_key,
3818         .start_ap = ieee80211_start_ap,
3819         .change_beacon = ieee80211_change_beacon,
3820         .stop_ap = ieee80211_stop_ap,
3821         .add_station = ieee80211_add_station,
3822         .del_station = ieee80211_del_station,
3823         .change_station = ieee80211_change_station,
3824         .get_station = ieee80211_get_station,
3825         .dump_station = ieee80211_dump_station,
3826         .dump_survey = ieee80211_dump_survey,
3827 #ifdef CONFIG_MAC80211_MESH
3828         .add_mpath = ieee80211_add_mpath,
3829         .del_mpath = ieee80211_del_mpath,
3830         .change_mpath = ieee80211_change_mpath,
3831         .get_mpath = ieee80211_get_mpath,
3832         .dump_mpath = ieee80211_dump_mpath,
3833         .get_mpp = ieee80211_get_mpp,
3834         .dump_mpp = ieee80211_dump_mpp,
3835         .update_mesh_config = ieee80211_update_mesh_config,
3836         .get_mesh_config = ieee80211_get_mesh_config,
3837         .join_mesh = ieee80211_join_mesh,
3838         .leave_mesh = ieee80211_leave_mesh,
3839 #endif
3840         .join_ocb = ieee80211_join_ocb,
3841         .leave_ocb = ieee80211_leave_ocb,
3842         .change_bss = ieee80211_change_bss,
3843         .set_txq_params = ieee80211_set_txq_params,
3844         .set_monitor_channel = ieee80211_set_monitor_channel,
3845         .suspend = ieee80211_suspend,
3846         .resume = ieee80211_resume,
3847         .scan = ieee80211_scan,
3848         .sched_scan_start = ieee80211_sched_scan_start,
3849         .sched_scan_stop = ieee80211_sched_scan_stop,
3850         .auth = ieee80211_auth,
3851         .assoc = ieee80211_assoc,
3852         .deauth = ieee80211_deauth,
3853         .disassoc = ieee80211_disassoc,
3854         .join_ibss = ieee80211_join_ibss,
3855         .leave_ibss = ieee80211_leave_ibss,
3856         .set_mcast_rate = ieee80211_set_mcast_rate,
3857         .set_wiphy_params = ieee80211_set_wiphy_params,
3858         .set_tx_power = ieee80211_set_tx_power,
3859         .get_tx_power = ieee80211_get_tx_power,
3860         .set_wds_peer = ieee80211_set_wds_peer,
3861         .rfkill_poll = ieee80211_rfkill_poll,
3862         CFG80211_TESTMODE_CMD(ieee80211_testmode_cmd)
3863         CFG80211_TESTMODE_DUMP(ieee80211_testmode_dump)
3864         .set_power_mgmt = ieee80211_set_power_mgmt,
3865         .set_bitrate_mask = ieee80211_set_bitrate_mask,
3866         .remain_on_channel = ieee80211_remain_on_channel,
3867         .cancel_remain_on_channel = ieee80211_cancel_remain_on_channel,
3868         .mgmt_tx = ieee80211_mgmt_tx,
3869         .mgmt_tx_cancel_wait = ieee80211_mgmt_tx_cancel_wait,
3870         .set_cqm_rssi_config = ieee80211_set_cqm_rssi_config,
3871         .mgmt_frame_register = ieee80211_mgmt_frame_register,
3872         .set_antenna = ieee80211_set_antenna,
3873         .get_antenna = ieee80211_get_antenna,
3874         .set_rekey_data = ieee80211_set_rekey_data,
3875         .tdls_oper = ieee80211_tdls_oper,
3876         .tdls_mgmt = ieee80211_tdls_mgmt,
3877         .tdls_channel_switch = ieee80211_tdls_channel_switch,
3878         .tdls_cancel_channel_switch = ieee80211_tdls_cancel_channel_switch,
3879         .probe_client = ieee80211_probe_client,
3880         .set_noack_map = ieee80211_set_noack_map,
3881 #ifdef CONFIG_PM
3882         .set_wakeup = ieee80211_set_wakeup,
3883 #endif
3884         .get_channel = ieee80211_cfg_get_channel,
3885         .start_radar_detection = ieee80211_start_radar_detection,
3886         .channel_switch = ieee80211_channel_switch,
3887         .set_qos_map = ieee80211_set_qos_map,
3888         .set_ap_chanwidth = ieee80211_set_ap_chanwidth,
3889         .add_tx_ts = ieee80211_add_tx_ts,
3890         .del_tx_ts = ieee80211_del_tx_ts,
3891 };