kernel/net/mac80211/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 "rate.h"
  21 #include "mesh.h"
  22 #include "wme.h"
  23
  24 static struct wireless_dev *ieee80211_add_iface(struct wiphy *wiphy,
  25                                                 const char *name,
  26                                                 unsigned char name_assign_type,
  27                                                 enum nl80211_iftype type,
  28                                                 u32 *flags,
  29                                                 struct vif_params *params)
  30 {
  31         struct ieee80211_local *local = wiphy_priv(wiphy);
  32         struct wireless_dev *wdev;
  33         struct ieee80211_sub_if_data *sdata;
  34         int err;
  35
  36         err = ieee80211_if_add(local, name, name_assign_type, &wdev, type, params);
  37         if (err)
  38                 return ERR_PTR(err);
  39
  40         if (type == NL80211_IFTYPE_MONITOR && flags) {
  41                 sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
  42                 sdata->u.mntr_flags = *flags;
  43         }
  44
  45         return wdev;
  46 }
  47
  48 static int ieee80211_del_iface(struct wiphy *wiphy, struct wireless_dev *wdev)
  49 {
  50         ieee80211_if_remove(IEEE80211_WDEV_TO_SUB_IF(wdev));
  51
  52         return 0;
  53 }
  54
  55 static int ieee80211_change_iface(struct wiphy *wiphy,
  56                                   struct net_device *dev,
  57                                   enum nl80211_iftype type, u32 *flags,
  58                                   struct vif_params *params)
  59 {
  60         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
  61         int ret;
  62
  63         ret = ieee80211_if_change_type(sdata, type);
  64         if (ret)
  65                 return ret;
  66
  67         if (type == NL80211_IFTYPE_AP_VLAN &&
  68             params && params->use_4addr == 0)
  69                 RCU_INIT_POINTER(sdata->u.vlan.sta, NULL);
  70         else if (type == NL80211_IFTYPE_STATION &&
  71                  params && params->use_4addr >= 0)
  72                 sdata->u.mgd.use_4addr = params->use_4addr;
  73
  74         if (sdata->vif.type == NL80211_IFTYPE_MONITOR && flags) {
  75                 struct ieee80211_local *local = sdata->local;
  76
  77                 if (ieee80211_sdata_running(sdata)) {
  78                         u32 mask = MONITOR_FLAG_COOK_FRAMES |
  79                                    MONITOR_FLAG_ACTIVE;
  80
  81                         /*
  82                          * Prohibit MONITOR_FLAG_COOK_FRAMES and
  83                          * MONITOR_FLAG_ACTIVE to be changed while the
  84                          * interface is up.
  85                          * Else we would need to add a lot of cruft
  86                          * to update everything:
  87                          *      cooked_mntrs, monitor and all fif_* counters
  88                          *      reconfigure hardware
  89                          */
  90                         if ((*flags & mask) != (sdata->u.mntr_flags & mask))
  91                                 return -EBUSY;
  92
  93                         ieee80211_adjust_monitor_flags(sdata, -1);
  94                         sdata->u.mntr_flags = *flags;
  95                         ieee80211_adjust_monitor_flags(sdata, 1);
  96
  97                         ieee80211_configure_filter(local);
  98                 } else {
  99                         /*
 100                          * Because the interface is down, ieee80211_do_stop
 101                          * and ieee80211_do_open take care of "everything"
 102                          * mentioned in the comment above.
 103                          */
 104                         sdata->u.mntr_flags = *flags;
 105                 }
 106         }
 107
 108         return 0;
 109 }
 110
 111 static int ieee80211_start_p2p_device(struct wiphy *wiphy,
 112                                       struct wireless_dev *wdev)
 113 {
 114         struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
 115         int ret;
 116
 117         mutex_lock(&sdata->local->chanctx_mtx);
 118         ret = ieee80211_check_combinations(sdata, NULL, 0, 0);
 119         mutex_unlock(&sdata->local->chanctx_mtx);
 120         if (ret < 0)
 121                 return ret;
 122
 123         return ieee80211_do_open(wdev, true);
 124 }
 125
 126 static void ieee80211_stop_p2p_device(struct wiphy *wiphy,
 127                                       struct wireless_dev *wdev)
 128 {
 129         ieee80211_sdata_stop(IEEE80211_WDEV_TO_SUB_IF(wdev));
 130 }
 131
 132 static int ieee80211_set_noack_map(struct wiphy *wiphy,
 133                                   struct net_device *dev,
 134                                   u16 noack_map)
 135 {
 136         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 137
 138         sdata->noack_map = noack_map;
 139
 140         ieee80211_check_fast_xmit_iface(sdata);
 141
 142         return 0;
 143 }
 144
 145 static int ieee80211_add_key(struct wiphy *wiphy, struct net_device *dev,
 146                              u8 key_idx, bool pairwise, const u8 *mac_addr,
 147                              struct key_params *params)
 148 {
 149         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 150         struct ieee80211_local *local = sdata->local;
 151         struct sta_info *sta = NULL;
 152         const struct ieee80211_cipher_scheme *cs = NULL;
 153         struct ieee80211_key *key;
 154         int err;
 155
 156         if (!ieee80211_sdata_running(sdata))
 157                 return -ENETDOWN;
 158
 159         /* reject WEP and TKIP keys if WEP failed to initialize */
 160         switch (params->cipher) {
 161         case WLAN_CIPHER_SUITE_WEP40:
 162         case WLAN_CIPHER_SUITE_TKIP:
 163         case WLAN_CIPHER_SUITE_WEP104:
 164                 if (IS_ERR(local->wep_tx_tfm))
 165                         return -EINVAL;
 166                 break;
 167         case WLAN_CIPHER_SUITE_CCMP:
 168         case WLAN_CIPHER_SUITE_CCMP_256:
 169         case WLAN_CIPHER_SUITE_AES_CMAC:
 170         case WLAN_CIPHER_SUITE_BIP_CMAC_256:
 171         case WLAN_CIPHER_SUITE_BIP_GMAC_128:
 172         case WLAN_CIPHER_SUITE_BIP_GMAC_256:
 173         case WLAN_CIPHER_SUITE_GCMP:
 174         case WLAN_CIPHER_SUITE_GCMP_256:
 175                 break;
 176         default:
 177                 cs = ieee80211_cs_get(local, params->cipher, sdata->vif.type);
 178                 break;
 179         }
 180
 181         key = ieee80211_key_alloc(params->cipher, key_idx, params->key_len,
 182                                   params->key, params->seq_len, params->seq,
 183                                   cs);
 184         if (IS_ERR(key))
 185                 return PTR_ERR(key);
 186
 187         if (pairwise)
 188                 key->conf.flags |= IEEE80211_KEY_FLAG_PAIRWISE;
 189
 190         mutex_lock(&local->sta_mtx);
 191
 192         if (mac_addr) {
 193                 if (ieee80211_vif_is_mesh(&sdata->vif))
 194                         sta = sta_info_get(sdata, mac_addr);
 195                 else
 196                         sta = sta_info_get_bss(sdata, mac_addr);
 197                 /*
 198                  * The ASSOC test makes sure the driver is ready to
 199                  * receive the key. When wpa_supplicant has roamed
 200                  * using FT, it attempts to set the key before
 201                  * association has completed, this rejects that attempt
 202                  * so it will set the key again after association.
 203                  *
 204                  * TODO: accept the key if we have a station entry and
 205                  *       add it to the device after the station.
 206                  */
 207                 if (!sta || !test_sta_flag(sta, WLAN_STA_ASSOC)) {
 208                         ieee80211_key_free_unused(key);
 209                         err = -ENOENT;
 210                         goto out_unlock;
 211                 }
 212         }
 213
 214         switch (sdata->vif.type) {
 215         case NL80211_IFTYPE_STATION:
 216                 if (sdata->u.mgd.mfp != IEEE80211_MFP_DISABLED)
 217                         key->conf.flags |= IEEE80211_KEY_FLAG_RX_MGMT;
 218                 break;
 219         case NL80211_IFTYPE_AP:
 220         case NL80211_IFTYPE_AP_VLAN:
 221                 /* Keys without a station are used for TX only */
 222                 if (key->sta && test_sta_flag(key->sta, WLAN_STA_MFP))
 223                         key->conf.flags |= IEEE80211_KEY_FLAG_RX_MGMT;
 224                 break;
 225         case NL80211_IFTYPE_ADHOC:
 226                 /* no MFP (yet) */
 227                 break;
 228         case NL80211_IFTYPE_MESH_POINT:
 229 #ifdef CONFIG_MAC80211_MESH
 230                 if (sdata->u.mesh.security != IEEE80211_MESH_SEC_NONE)
 231                         key->conf.flags |= IEEE80211_KEY_FLAG_RX_MGMT;
 232                 break;
 233 #endif
 234         case NL80211_IFTYPE_WDS:
 235         case NL80211_IFTYPE_MONITOR:
 236         case NL80211_IFTYPE_P2P_DEVICE:
 237         case NL80211_IFTYPE_UNSPECIFIED:
 238         case NUM_NL80211_IFTYPES:
 239         case NL80211_IFTYPE_P2P_CLIENT:
 240         case NL80211_IFTYPE_P2P_GO:
 241         case NL80211_IFTYPE_OCB:
 242                 /* shouldn't happen */
 243                 WARN_ON_ONCE(1);
 244                 break;
 245         }
 246
 247         if (sta)
 248                 sta->cipher_scheme = cs;
 249
 250         err = ieee80211_key_link(key, sdata, sta);
 251
 252  out_unlock:
 253         mutex_unlock(&local->sta_mtx);
 254
 255         return err;
 256 }
 257
 258 static int ieee80211_del_key(struct wiphy *wiphy, struct net_device *dev,
 259                              u8 key_idx, bool pairwise, const u8 *mac_addr)
 260 {
 261         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 262         struct ieee80211_local *local = sdata->local;
 263         struct sta_info *sta;
 264         struct ieee80211_key *key = NULL;
 265         int ret;
 266
 267         mutex_lock(&local->sta_mtx);
 268         mutex_lock(&local->key_mtx);
 269
 270         if (mac_addr) {
 271                 ret = -ENOENT;
 272
 273                 sta = sta_info_get_bss(sdata, mac_addr);
 274                 if (!sta)
 275                         goto out_unlock;
 276
 277                 if (pairwise)
 278                         key = key_mtx_dereference(local, sta->ptk[key_idx]);
 279                 else
 280                         key = key_mtx_dereference(local, sta->gtk[key_idx]);
 281         } else
 282                 key = key_mtx_dereference(local, sdata->keys[key_idx]);
 283
 284         if (!key) {
 285                 ret = -ENOENT;
 286                 goto out_unlock;
 287         }
 288
 289         ieee80211_key_free(key, true);
 290
 291         ret = 0;
 292  out_unlock:
 293         mutex_unlock(&local->key_mtx);
 294         mutex_unlock(&local->sta_mtx);
 295
 296         return ret;
 297 }
 298
 299 static int ieee80211_get_key(struct wiphy *wiphy, struct net_device *dev,
 300                              u8 key_idx, bool pairwise, const u8 *mac_addr,
 301                              void *cookie,
 302                              void (*callback)(void *cookie,
 303                                               struct key_params *params))
 304 {
 305         struct ieee80211_sub_if_data *sdata;
 306         struct sta_info *sta = NULL;
 307         u8 seq[6] = {0};
 308         struct key_params params;
 309         struct ieee80211_key *key = NULL;
 310         u64 pn64;
 311         u32 iv32;
 312         u16 iv16;
 313         int err = -ENOENT;
 314         struct ieee80211_key_seq kseq = {};
 315
 316         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 317
 318         rcu_read_lock();
 319
 320         if (mac_addr) {
 321                 sta = sta_info_get_bss(sdata, mac_addr);
 322                 if (!sta)
 323                         goto out;
 324
 325                 if (pairwise && key_idx < NUM_DEFAULT_KEYS)
 326                         key = rcu_dereference(sta->ptk[key_idx]);
 327                 else if (!pairwise &&
 328                          key_idx < NUM_DEFAULT_KEYS + NUM_DEFAULT_MGMT_KEYS)
 329                         key = rcu_dereference(sta->gtk[key_idx]);
 330         } else
 331                 key = rcu_dereference(sdata->keys[key_idx]);
 332
 333         if (!key)
 334                 goto out;
 335
 336         memset(&params, 0, sizeof(params));
 337
 338         params.cipher = key->conf.cipher;
 339
 340         switch (key->conf.cipher) {
 341         case WLAN_CIPHER_SUITE_TKIP:
 342                 iv32 = key->u.tkip.tx.iv32;
 343                 iv16 = key->u.tkip.tx.iv16;
 344
 345                 if (key->flags & KEY_FLAG_UPLOADED_TO_HARDWARE &&
 346                     !(key->conf.flags & IEEE80211_KEY_FLAG_GENERATE_IV)) {
 347                         drv_get_key_seq(sdata->local, key, &kseq);
 348                         iv32 = kseq.tkip.iv32;
 349                         iv16 = kseq.tkip.iv16;
 350                 }
 351
 352                 seq[0] = iv16 & 0xff;
 353                 seq[1] = (iv16 >> 8) & 0xff;
 354                 seq[2] = iv32 & 0xff;
 355                 seq[3] = (iv32 >> 8) & 0xff;
 356                 seq[4] = (iv32 >> 16) & 0xff;
 357                 seq[5] = (iv32 >> 24) & 0xff;
 358                 params.seq = seq;
 359                 params.seq_len = 6;
 360                 break;
 361         case WLAN_CIPHER_SUITE_CCMP:
 362         case WLAN_CIPHER_SUITE_CCMP_256:
 363         case WLAN_CIPHER_SUITE_AES_CMAC:
 364         case WLAN_CIPHER_SUITE_BIP_CMAC_256:
 365                 BUILD_BUG_ON(offsetof(typeof(kseq), ccmp) !=
 366                              offsetof(typeof(kseq), aes_cmac));
 367         case WLAN_CIPHER_SUITE_BIP_GMAC_128:
 368         case WLAN_CIPHER_SUITE_BIP_GMAC_256:
 369                 BUILD_BUG_ON(offsetof(typeof(kseq), ccmp) !=
 370                              offsetof(typeof(kseq), aes_gmac));
 371         case WLAN_CIPHER_SUITE_GCMP:
 372         case WLAN_CIPHER_SUITE_GCMP_256:
 373                 BUILD_BUG_ON(offsetof(typeof(kseq), ccmp) !=
 374                              offsetof(typeof(kseq), gcmp));
 375
 376                 if (key->flags & KEY_FLAG_UPLOADED_TO_HARDWARE &&
 377                     !(key->conf.flags & IEEE80211_KEY_FLAG_GENERATE_IV)) {
 378                         drv_get_key_seq(sdata->local, key, &kseq);
 379                         memcpy(seq, kseq.ccmp.pn, 6);
 380                 } else {
 381                         pn64 = atomic64_read(&key->conf.tx_pn);
 382                         seq[0] = pn64;
 383                         seq[1] = pn64 >> 8;
 384                         seq[2] = pn64 >> 16;
 385                         seq[3] = pn64 >> 24;
 386                         seq[4] = pn64 >> 32;
 387                         seq[5] = pn64 >> 40;
 388                 }
 389                 params.seq = seq;
 390                 params.seq_len = 6;
 391                 break;
 392         default:
 393                 if (!(key->flags & KEY_FLAG_UPLOADED_TO_HARDWARE))
 394                         break;
 395                 if (WARN_ON(key->conf.flags & IEEE80211_KEY_FLAG_GENERATE_IV))
 396                         break;
 397                 drv_get_key_seq(sdata->local, key, &kseq);
 398                 params.seq = kseq.hw.seq;
 399                 params.seq_len = kseq.hw.seq_len;
 400                 break;
 401         }
 402
 403         params.key = key->conf.key;
 404         params.key_len = key->conf.keylen;
 405
 406         callback(cookie, &params);
 407         err = 0;
 408
 409  out:
 410         rcu_read_unlock();
 411         return err;
 412 }
 413
 414 static int ieee80211_config_default_key(struct wiphy *wiphy,
 415                                         struct net_device *dev,
 416                                         u8 key_idx, bool uni,
 417                                         bool multi)
 418 {
 419         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 420
 421         ieee80211_set_default_key(sdata, key_idx, uni, multi);
 422
 423         return 0;
 424 }
 425
 426 static int ieee80211_config_default_mgmt_key(struct wiphy *wiphy,
 427                                              struct net_device *dev,
 428                                              u8 key_idx)
 429 {
 430         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 431
 432         ieee80211_set_default_mgmt_key(sdata, key_idx);
 433
 434         return 0;
 435 }
 436
 437 void sta_set_rate_info_tx(struct sta_info *sta,
 438                           const struct ieee80211_tx_rate *rate,
 439                           struct rate_info *rinfo)
 440 {
 441         rinfo->flags = 0;
 442         if (rate->flags & IEEE80211_TX_RC_MCS) {
 443                 rinfo->flags |= RATE_INFO_FLAGS_MCS;
 444                 rinfo->mcs = rate->idx;
 445         } else if (rate->flags & IEEE80211_TX_RC_VHT_MCS) {
 446                 rinfo->flags |= RATE_INFO_FLAGS_VHT_MCS;
 447                 rinfo->mcs = ieee80211_rate_get_vht_mcs(rate);
 448                 rinfo->nss = ieee80211_rate_get_vht_nss(rate);
 449         } else {
 450                 struct ieee80211_supported_band *sband;
 451                 int shift = ieee80211_vif_get_shift(&sta->sdata->vif);
 452                 u16 brate;
 453
 454                 sband = sta->local->hw.wiphy->bands[
 455                                 ieee80211_get_sdata_band(sta->sdata)];
 456                 brate = sband->bitrates[rate->idx].bitrate;
 457                 rinfo->legacy = DIV_ROUND_UP(brate, 1 << shift);
 458         }
 459         if (rate->flags & IEEE80211_TX_RC_40_MHZ_WIDTH)
 460                 rinfo->bw = RATE_INFO_BW_40;
 461         else if (rate->flags & IEEE80211_TX_RC_80_MHZ_WIDTH)
 462                 rinfo->bw = RATE_INFO_BW_80;
 463         else if (rate->flags & IEEE80211_TX_RC_160_MHZ_WIDTH)
 464                 rinfo->bw = RATE_INFO_BW_160;
 465         else
 466                 rinfo->bw = RATE_INFO_BW_20;
 467         if (rate->flags & IEEE80211_TX_RC_SHORT_GI)
 468                 rinfo->flags |= RATE_INFO_FLAGS_SHORT_GI;
 469 }
 470
 471 static int ieee80211_dump_station(struct wiphy *wiphy, struct net_device *dev,
 472                                   int idx, u8 *mac, struct station_info *sinfo)
 473 {
 474         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 475         struct ieee80211_local *local = sdata->local;
 476         struct sta_info *sta;
 477         int ret = -ENOENT;
 478
 479         mutex_lock(&local->sta_mtx);
 480
 481         sta = sta_info_get_by_idx(sdata, idx);
 482         if (sta) {
 483                 ret = 0;
 484                 memcpy(mac, sta->sta.addr, ETH_ALEN);
 485                 sta_set_sinfo(sta, sinfo);
 486         }
 487
 488         mutex_unlock(&local->sta_mtx);
 489
 490         return ret;
 491 }
 492
 493 static int ieee80211_dump_survey(struct wiphy *wiphy, struct net_device *dev,
 494                                  int idx, struct survey_info *survey)
 495 {
 496         struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
 497
 498         return drv_get_survey(local, idx, survey);
 499 }
 500
 501 static int ieee80211_get_station(struct wiphy *wiphy, struct net_device *dev,
 502                                  const u8 *mac, struct station_info *sinfo)
 503 {
 504         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 505         struct ieee80211_local *local = sdata->local;
 506         struct sta_info *sta;
 507         int ret = -ENOENT;
 508
 509         mutex_lock(&local->sta_mtx);
 510
 511         sta = sta_info_get_bss(sdata, mac);
 512         if (sta) {
 513                 ret = 0;
 514                 sta_set_sinfo(sta, sinfo);
 515         }
 516
 517         mutex_unlock(&local->sta_mtx);
 518
 519         return ret;
 520 }
 521
 522 static int ieee80211_set_monitor_channel(struct wiphy *wiphy,
 523                                          struct cfg80211_chan_def *chandef)
 524 {
 525         struct ieee80211_local *local = wiphy_priv(wiphy);
 526         struct ieee80211_sub_if_data *sdata;
 527         int ret = 0;
 528
 529         if (cfg80211_chandef_identical(&local->monitor_chandef, chandef))
 530                 return 0;
 531
 532         mutex_lock(&local->mtx);
 533         mutex_lock(&local->iflist_mtx);
 534         if (local->use_chanctx) {
 535                 sdata = rcu_dereference_protected(
 536                                 local->monitor_sdata,
 537                                 lockdep_is_held(&local->iflist_mtx));
 538                 if (sdata) {
 539                         ieee80211_vif_release_channel(sdata);
 540                         ret = ieee80211_vif_use_channel(sdata, chandef,
 541                                         IEEE80211_CHANCTX_EXCLUSIVE);
 542                 }
 543         } else if (local->open_count == local->monitors) {
 544                 local->_oper_chandef = *chandef;
 545                 ieee80211_hw_config(local, 0);
 546         }
 547
 548         if (ret == 0)
 549                 local->monitor_chandef = *chandef;
 550         mutex_unlock(&local->iflist_mtx);
 551         mutex_unlock(&local->mtx);
 552
 553         return ret;
 554 }
 555
 556 static int ieee80211_set_probe_resp(struct ieee80211_sub_if_data *sdata,
 557                                     const u8 *resp, size_t resp_len,
 558                                     const struct ieee80211_csa_settings *csa)
 559 {
 560         struct probe_resp *new, *old;
 561
 562         if (!resp || !resp_len)
 563                 return 1;
 564
 565         old = sdata_dereference(sdata->u.ap.probe_resp, sdata);
 566
 567         new = kzalloc(sizeof(struct probe_resp) + resp_len, GFP_KERNEL);
 568         if (!new)
 569                 return -ENOMEM;
 570
 571         new->len = resp_len;
 572         memcpy(new->data, resp, resp_len);
 573
 574         if (csa)
 575                 memcpy(new->csa_counter_offsets, csa->counter_offsets_presp,
 576                        csa->n_counter_offsets_presp *
 577                        sizeof(new->csa_counter_offsets[0]));
 578
 579         rcu_assign_pointer(sdata->u.ap.probe_resp, new);
 580         if (old)
 581                 kfree_rcu(old, rcu_head);
 582
 583         return 0;
 584 }
 585
 586 static int ieee80211_assign_beacon(struct ieee80211_sub_if_data *sdata,
 587                                    struct cfg80211_beacon_data *params,
 588                                    const struct ieee80211_csa_settings *csa)
 589 {
 590         struct beacon_data *new, *old;
 591         int new_head_len, new_tail_len;
 592         int size, err;
 593         u32 changed = BSS_CHANGED_BEACON;
 594
 595         old = sdata_dereference(sdata->u.ap.beacon, sdata);
 596
 597
 598         /* Need to have a beacon head if we don't have one yet */
 599         if (!params->head && !old)
 600                 return -EINVAL;
 601
 602         /* new or old head? */
 603         if (params->head)
 604                 new_head_len = params->head_len;
 605         else
 606                 new_head_len = old->head_len;
 607
 608         /* new or old tail? */
 609         if (params->tail || !old)
 610                 /* params->tail_len will be zero for !params->tail */
 611                 new_tail_len = params->tail_len;
 612         else
 613                 new_tail_len = old->tail_len;
 614
 615         size = sizeof(*new) + new_head_len + new_tail_len;
 616
 617         new = kzalloc(size, GFP_KERNEL);
 618         if (!new)
 619                 return -ENOMEM;
 620
 621         /* start filling the new info now */
 622
 623         /*
 624          * pointers go into the block we allocated,
 625          * memory is | beacon_data | head | tail |
 626          */
 627         new->head = ((u8 *) new) + sizeof(*new);
 628         new->tail = new->head + new_head_len;
 629         new->head_len = new_head_len;
 630         new->tail_len = new_tail_len;
 631
 632         if (csa) {
 633                 new->csa_current_counter = csa->count;
 634                 memcpy(new->csa_counter_offsets, csa->counter_offsets_beacon,
 635                        csa->n_counter_offsets_beacon *
 636                        sizeof(new->csa_counter_offsets[0]));
 637         }
 638
 639         /* copy in head */
 640         if (params->head)
 641                 memcpy(new->head, params->head, new_head_len);
 642         else
 643                 memcpy(new->head, old->head, new_head_len);
 644
 645         /* copy in optional tail */
 646         if (params->tail)
 647                 memcpy(new->tail, params->tail, new_tail_len);
 648         else
 649                 if (old)
 650                         memcpy(new->tail, old->tail, new_tail_len);
 651
 652         err = ieee80211_set_probe_resp(sdata, params->probe_resp,
 653                                        params->probe_resp_len, csa);
 654         if (err < 0)
 655                 return err;
 656         if (err == 0)
 657                 changed |= BSS_CHANGED_AP_PROBE_RESP;
 658
 659         rcu_assign_pointer(sdata->u.ap.beacon, new);
 660
 661         if (old)
 662                 kfree_rcu(old, rcu_head);
 663
 664         return changed;
 665 }
 666
 667 static int ieee80211_start_ap(struct wiphy *wiphy, struct net_device *dev,
 668                               struct cfg80211_ap_settings *params)
 669 {
 670         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 671         struct ieee80211_local *local = sdata->local;
 672         struct beacon_data *old;
 673         struct ieee80211_sub_if_data *vlan;
 674         u32 changed = BSS_CHANGED_BEACON_INT |
 675                       BSS_CHANGED_BEACON_ENABLED |
 676                       BSS_CHANGED_BEACON |
 677                       BSS_CHANGED_SSID |
 678                       BSS_CHANGED_P2P_PS |
 679                       BSS_CHANGED_TXPOWER;
 680         int err;
 681
 682         old = sdata_dereference(sdata->u.ap.beacon, sdata);
 683         if (old)
 684                 return -EALREADY;
 685
 686         switch (params->smps_mode) {
 687         case NL80211_SMPS_OFF:
 688                 sdata->smps_mode = IEEE80211_SMPS_OFF;
 689                 break;
 690         case NL80211_SMPS_STATIC:
 691                 sdata->smps_mode = IEEE80211_SMPS_STATIC;
 692                 break;
 693         case NL80211_SMPS_DYNAMIC:
 694                 sdata->smps_mode = IEEE80211_SMPS_DYNAMIC;
 695                 break;
 696         default:
 697                 return -EINVAL;
 698         }
 699         sdata->needed_rx_chains = sdata->local->rx_chains;
 700
 701         mutex_lock(&local->mtx);
 702         err = ieee80211_vif_use_channel(sdata, &params->chandef,
 703                                         IEEE80211_CHANCTX_SHARED);
 704         if (!err)
 705                 ieee80211_vif_copy_chanctx_to_vlans(sdata, false);
 706         mutex_unlock(&local->mtx);
 707         if (err)
 708                 return err;
 709
 710         /*
 711          * Apply control port protocol, this allows us to
 712          * not encrypt dynamic WEP control frames.
 713          */
 714         sdata->control_port_protocol = params->crypto.control_port_ethertype;
 715         sdata->control_port_no_encrypt = params->crypto.control_port_no_encrypt;
 716         sdata->encrypt_headroom = ieee80211_cs_headroom(sdata->local,
 717                                                         &params->crypto,
 718                                                         sdata->vif.type);
 719
 720         list_for_each_entry(vlan, &sdata->u.ap.vlans, u.vlan.list) {
 721                 vlan->control_port_protocol =
 722                         params->crypto.control_port_ethertype;
 723                 vlan->control_port_no_encrypt =
 724                         params->crypto.control_port_no_encrypt;
 725                 vlan->encrypt_headroom =
 726                         ieee80211_cs_headroom(sdata->local,
 727                                               &params->crypto,
 728                                               vlan->vif.type);
 729         }
 730
 731         sdata->vif.bss_conf.beacon_int = params->beacon_interval;
 732         sdata->vif.bss_conf.dtim_period = params->dtim_period;
 733         sdata->vif.bss_conf.enable_beacon = true;
 734
 735         sdata->vif.bss_conf.ssid_len = params->ssid_len;
 736         if (params->ssid_len)
 737                 memcpy(sdata->vif.bss_conf.ssid, params->ssid,
 738                        params->ssid_len);
 739         sdata->vif.bss_conf.hidden_ssid =
 740                 (params->hidden_ssid != NL80211_HIDDEN_SSID_NOT_IN_USE);
 741
 742         memset(&sdata->vif.bss_conf.p2p_noa_attr, 0,
 743                sizeof(sdata->vif.bss_conf.p2p_noa_attr));
 744         sdata->vif.bss_conf.p2p_noa_attr.oppps_ctwindow =
 745                 params->p2p_ctwindow & IEEE80211_P2P_OPPPS_CTWINDOW_MASK;
 746         if (params->p2p_opp_ps)
 747                 sdata->vif.bss_conf.p2p_noa_attr.oppps_ctwindow |=
 748                                         IEEE80211_P2P_OPPPS_ENABLE_BIT;
 749
 750         err = ieee80211_assign_beacon(sdata, &params->beacon, NULL);
 751         if (err < 0) {
 752                 ieee80211_vif_release_channel(sdata);
 753                 return err;
 754         }
 755         changed |= err;
 756
 757         err = drv_start_ap(sdata->local, sdata);
 758         if (err) {
 759                 old = sdata_dereference(sdata->u.ap.beacon, sdata);
 760
 761                 if (old)
 762                         kfree_rcu(old, rcu_head);
 763                 RCU_INIT_POINTER(sdata->u.ap.beacon, NULL);
 764                 ieee80211_vif_release_channel(sdata);
 765                 return err;
 766         }
 767
 768         ieee80211_recalc_dtim(local, sdata);
 769         ieee80211_bss_info_change_notify(sdata, changed);
 770
 771         netif_carrier_on(dev);
 772         list_for_each_entry(vlan, &sdata->u.ap.vlans, u.vlan.list)
 773                 netif_carrier_on(vlan->dev);
 774
 775         return 0;
 776 }
 777
 778 static int ieee80211_change_beacon(struct wiphy *wiphy, struct net_device *dev,
 779                                    struct cfg80211_beacon_data *params)
 780 {
 781         struct ieee80211_sub_if_data *sdata;
 782         struct beacon_data *old;
 783         int err;
 784
 785         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 786         sdata_assert_lock(sdata);
 787
 788         /* don't allow changing the beacon while CSA is in place - offset
 789          * of channel switch counter may change
 790          */
 791         if (sdata->vif.csa_active)
 792                 return -EBUSY;
 793
 794         old = sdata_dereference(sdata->u.ap.beacon, sdata);
 795         if (!old)
 796                 return -ENOENT;
 797
 798         err = ieee80211_assign_beacon(sdata, params, NULL);
 799         if (err < 0)
 800                 return err;
 801         ieee80211_bss_info_change_notify(sdata, err);
 802         return 0;
 803 }
 804
 805 static int ieee80211_stop_ap(struct wiphy *wiphy, struct net_device *dev)
 806 {
 807         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 808         struct ieee80211_sub_if_data *vlan;
 809         struct ieee80211_local *local = sdata->local;
 810         struct beacon_data *old_beacon;
 811         struct probe_resp *old_probe_resp;
 812         struct cfg80211_chan_def chandef;
 813
 814         sdata_assert_lock(sdata);
 815
 816         old_beacon = sdata_dereference(sdata->u.ap.beacon, sdata);
 817         if (!old_beacon)
 818                 return -ENOENT;
 819         old_probe_resp = sdata_dereference(sdata->u.ap.probe_resp, sdata);
 820
 821         /* abort any running channel switch */
 822         mutex_lock(&local->mtx);
 823         sdata->vif.csa_active = false;
 824         if (sdata->csa_block_tx) {
 825                 ieee80211_wake_vif_queues(local, sdata,
 826                                           IEEE80211_QUEUE_STOP_REASON_CSA);
 827                 sdata->csa_block_tx = false;
 828         }
 829
 830         mutex_unlock(&local->mtx);
 831
 832         kfree(sdata->u.ap.next_beacon);
 833         sdata->u.ap.next_beacon = NULL;
 834
 835         /* turn off carrier for this interface and dependent VLANs */
 836         list_for_each_entry(vlan, &sdata->u.ap.vlans, u.vlan.list)
 837                 netif_carrier_off(vlan->dev);
 838         netif_carrier_off(dev);
 839
 840         /* remove beacon and probe response */
 841         RCU_INIT_POINTER(sdata->u.ap.beacon, NULL);
 842         RCU_INIT_POINTER(sdata->u.ap.probe_resp, NULL);
 843         kfree_rcu(old_beacon, rcu_head);
 844         if (old_probe_resp)
 845                 kfree_rcu(old_probe_resp, rcu_head);
 846         sdata->u.ap.driver_smps_mode = IEEE80211_SMPS_OFF;
 847
 848         __sta_info_flush(sdata, true);
 849         ieee80211_free_keys(sdata, true);
 850
 851         sdata->vif.bss_conf.enable_beacon = false;
 852         sdata->vif.bss_conf.ssid_len = 0;
 853         clear_bit(SDATA_STATE_OFFCHANNEL_BEACON_STOPPED, &sdata->state);
 854         ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_BEACON_ENABLED);
 855
 856         if (sdata->wdev.cac_started) {
 857                 chandef = sdata->vif.bss_conf.chandef;
 858                 cancel_delayed_work_sync(&sdata->dfs_cac_timer_work);
 859                 cfg80211_cac_event(sdata->dev, &chandef,
 860                                    NL80211_RADAR_CAC_ABORTED,
 861                                    GFP_KERNEL);
 862         }
 863
 864         drv_stop_ap(sdata->local, sdata);
 865
 866         /* free all potentially still buffered bcast frames */
 867         local->total_ps_buffered -= skb_queue_len(&sdata->u.ap.ps.bc_buf);
 868         skb_queue_purge(&sdata->u.ap.ps.bc_buf);
 869
 870         mutex_lock(&local->mtx);
 871         ieee80211_vif_copy_chanctx_to_vlans(sdata, true);
 872         ieee80211_vif_release_channel(sdata);
 873         mutex_unlock(&local->mtx);
 874
 875         return 0;
 876 }
 877
 878 /* Layer 2 Update frame (802.2 Type 1 LLC XID Update response) */
 879 struct iapp_layer2_update {
 880         u8 da[ETH_ALEN];        /* broadcast */
 881         u8 sa[ETH_ALEN];        /* STA addr */
 882         __be16 len;             /* 6 */
 883         u8 dsap;                /* 0 */
 884         u8 ssap;                /* 0 */
 885         u8 control;
 886         u8 xid_info[3];
 887 } __packed;
 888
 889 static void ieee80211_send_layer2_update(struct sta_info *sta)
 890 {
 891         struct iapp_layer2_update *msg;
 892         struct sk_buff *skb;
 893
 894         /* Send Level 2 Update Frame to update forwarding tables in layer 2
 895          * bridge devices */
 896
 897         skb = dev_alloc_skb(sizeof(*msg));
 898         if (!skb)
 899                 return;
 900         msg = (struct iapp_layer2_update *)skb_put(skb, sizeof(*msg));
 901
 902         /* 802.2 Type 1 Logical Link Control (LLC) Exchange Identifier (XID)
 903          * Update response frame; IEEE Std 802.2-1998, 5.4.1.2.1 */
 904
 905         eth_broadcast_addr(msg->da);
 906         memcpy(msg->sa, sta->sta.addr, ETH_ALEN);
 907         msg->len = htons(6);
 908         msg->dsap = 0;
 909         msg->ssap = 0x01;       /* NULL LSAP, CR Bit: Response */
 910         msg->control = 0xaf;    /* XID response lsb.1111F101.
 911                                  * F=0 (no poll command; unsolicited frame) */
 912         msg->xid_info[0] = 0x81;        /* XID format identifier */
 913         msg->xid_info[1] = 1;   /* LLC types/classes: Type 1 LLC */
 914         msg->xid_info[2] = 0;   /* XID sender's receive window size (RW) */
 915
 916         skb->dev = sta->sdata->dev;
 917         skb->protocol = eth_type_trans(skb, sta->sdata->dev);
 918         memset(skb->cb, 0, sizeof(skb->cb));
 919         netif_rx_ni(skb);
 920 }
 921
 922 static int sta_apply_auth_flags(struct ieee80211_local *local,
 923                                 struct sta_info *sta,
 924                                 u32 mask, u32 set)
 925 {
 926         int ret;
 927
 928         if (mask & BIT(NL80211_STA_FLAG_AUTHENTICATED) &&
 929             set & BIT(NL80211_STA_FLAG_AUTHENTICATED) &&
 930             !test_sta_flag(sta, WLAN_STA_AUTH)) {
 931                 ret = sta_info_move_state(sta, IEEE80211_STA_AUTH);
 932                 if (ret)
 933                         return ret;
 934         }
 935
 936         if (mask & BIT(NL80211_STA_FLAG_ASSOCIATED) &&
 937             set & BIT(NL80211_STA_FLAG_ASSOCIATED) &&
 938             !test_sta_flag(sta, WLAN_STA_ASSOC)) {
 939                 /*
 940                  * When peer becomes associated, init rate control as
 941                  * well. Some drivers require rate control initialized
 942                  * before drv_sta_state() is called.
 943                  */
 944                 if (!test_sta_flag(sta, WLAN_STA_RATE_CONTROL))
 945                         rate_control_rate_init(sta);
 946
 947                 ret = sta_info_move_state(sta, IEEE80211_STA_ASSOC);
 948                 if (ret)
 949                         return ret;
 950         }
 951
 952         if (mask & BIT(NL80211_STA_FLAG_AUTHORIZED)) {
 953                 if (set & BIT(NL80211_STA_FLAG_AUTHORIZED))
 954                         ret = sta_info_move_state(sta, IEEE80211_STA_AUTHORIZED);
 955                 else if (test_sta_flag(sta, WLAN_STA_AUTHORIZED))
 956                         ret = sta_info_move_state(sta, IEEE80211_STA_ASSOC);
 957                 else
 958                         ret = 0;
 959                 if (ret)
 960                         return ret;
 961         }
 962
 963         if (mask & BIT(NL80211_STA_FLAG_ASSOCIATED) &&
 964             !(set & BIT(NL80211_STA_FLAG_ASSOCIATED)) &&
 965             test_sta_flag(sta, WLAN_STA_ASSOC)) {
 966                 ret = sta_info_move_state(sta, IEEE80211_STA_AUTH);
 967                 if (ret)
 968                         return ret;
 969         }
 970
 971         if (mask & BIT(NL80211_STA_FLAG_AUTHENTICATED) &&
 972             !(set & BIT(NL80211_STA_FLAG_AUTHENTICATED)) &&
 973             test_sta_flag(sta, WLAN_STA_AUTH)) {
 974                 ret = sta_info_move_state(sta, IEEE80211_STA_NONE);
 975                 if (ret)
 976                         return ret;
 977         }
 978
 979         return 0;
 980 }
 981
 982 static void sta_apply_mesh_params(struct ieee80211_local *local,
 983                                   struct sta_info *sta,
 984                                   struct station_parameters *params)
 985 {
 986 #ifdef CONFIG_MAC80211_MESH
 987         struct ieee80211_sub_if_data *sdata = sta->sdata;
 988         u32 changed = 0;
 989
 990         if (params->sta_modify_mask & STATION_PARAM_APPLY_PLINK_STATE) {
 991                 switch (params->plink_state) {
 992                 case NL80211_PLINK_ESTAB:
 993                         if (sta->mesh->plink_state != NL80211_PLINK_ESTAB)
 994                                 changed = mesh_plink_inc_estab_count(sdata);
 995                         sta->mesh->plink_state = params->plink_state;
 996
 997                         ieee80211_mps_sta_status_update(sta);
 998                         changed |= ieee80211_mps_set_sta_local_pm(sta,
 999                                       sdata->u.mesh.mshcfg.power_mode);
1000                         break;
1001                 case NL80211_PLINK_LISTEN:
1002                 case NL80211_PLINK_BLOCKED:
1003                 case NL80211_PLINK_OPN_SNT:
1004                 case NL80211_PLINK_OPN_RCVD:
1005                 case NL80211_PLINK_CNF_RCVD:
1006                 case NL80211_PLINK_HOLDING:
1007                         if (sta->mesh->plink_state == NL80211_PLINK_ESTAB)
1008                                 changed = mesh_plink_dec_estab_count(sdata);
1009                         sta->mesh->plink_state = params->plink_state;
1010
1011                         ieee80211_mps_sta_status_update(sta);
1012                         changed |= ieee80211_mps_set_sta_local_pm(sta,
1013                                         NL80211_MESH_POWER_UNKNOWN);
1014                         break;
1015                 default:
1016                         /*  nothing  */
1017                         break;
1018                 }
1019         }
1020
1021         switch (params->plink_action) {
1022         case NL80211_PLINK_ACTION_NO_ACTION:
1023                 /* nothing */
1024                 break;
1025         case NL80211_PLINK_ACTION_OPEN:
1026                 changed |= mesh_plink_open(sta);
1027                 break;
1028         case NL80211_PLINK_ACTION_BLOCK:
1029                 changed |= mesh_plink_block(sta);
1030                 break;
1031         }
1032
1033         if (params->local_pm)
1034                 changed |= ieee80211_mps_set_sta_local_pm(sta,
1035                                                           params->local_pm);
1036
1037         ieee80211_mbss_info_change_notify(sdata, changed);
1038 #endif
1039 }
1040
1041 static int sta_apply_parameters(struct ieee80211_local *local,
1042                                 struct sta_info *sta,
1043                                 struct station_parameters *params)
1044 {
1045         int ret = 0;
1046         struct ieee80211_supported_band *sband;
1047         struct ieee80211_sub_if_data *sdata = sta->sdata;
1048         enum ieee80211_band band = ieee80211_get_sdata_band(sdata);
1049         u32 mask, set;
1050
1051         sband = local->hw.wiphy->bands[band];
1052
1053         mask = params->sta_flags_mask;
1054         set = params->sta_flags_set;
1055
1056         if (ieee80211_vif_is_mesh(&sdata->vif)) {
1057                 /*
1058                  * In mesh mode, ASSOCIATED isn't part of the nl80211
1059                  * API but must follow AUTHENTICATED for driver state.
1060                  */
1061                 if (mask & BIT(NL80211_STA_FLAG_AUTHENTICATED))
1062                         mask |= BIT(NL80211_STA_FLAG_ASSOCIATED);
1063                 if (set & BIT(NL80211_STA_FLAG_AUTHENTICATED))
1064                         set |= BIT(NL80211_STA_FLAG_ASSOCIATED);
1065         } else if (test_sta_flag(sta, WLAN_STA_TDLS_PEER)) {
1066                 /*
1067                  * TDLS -- everything follows authorized, but
1068                  * only becoming authorized is possible, not
1069                  * going back
1070                  */
1071                 if (set & BIT(NL80211_STA_FLAG_AUTHORIZED)) {
1072                         set |= BIT(NL80211_STA_FLAG_AUTHENTICATED) |
1073                                BIT(NL80211_STA_FLAG_ASSOCIATED);
1074                         mask |= BIT(NL80211_STA_FLAG_AUTHENTICATED) |
1075                                 BIT(NL80211_STA_FLAG_ASSOCIATED);
1076                 }
1077         }
1078
1079         if (mask & BIT(NL80211_STA_FLAG_WME) &&
1080             local->hw.queues >= IEEE80211_NUM_ACS)
1081                 sta->sta.wme = set & BIT(NL80211_STA_FLAG_WME);
1082
1083         /* auth flags will be set later for TDLS,
1084          * and for unassociated stations that move to assocaited */
1085         if (!test_sta_flag(sta, WLAN_STA_TDLS_PEER) &&
1086             !((mask & BIT(NL80211_STA_FLAG_ASSOCIATED)) &&
1087               (set & BIT(NL80211_STA_FLAG_ASSOCIATED)))) {
1088                 ret = sta_apply_auth_flags(local, sta, mask, set);
1089                 if (ret)
1090                         return ret;
1091         }
1092
1093         if (mask & BIT(NL80211_STA_FLAG_SHORT_PREAMBLE)) {
1094                 if (set & BIT(NL80211_STA_FLAG_SHORT_PREAMBLE))
1095                         set_sta_flag(sta, WLAN_STA_SHORT_PREAMBLE);
1096                 else
1097                         clear_sta_flag(sta, WLAN_STA_SHORT_PREAMBLE);
1098         }
1099
1100         if (mask & BIT(NL80211_STA_FLAG_MFP)) {
1101                 sta->sta.mfp = !!(set & BIT(NL80211_STA_FLAG_MFP));
1102                 if (set & BIT(NL80211_STA_FLAG_MFP))
1103                         set_sta_flag(sta, WLAN_STA_MFP);
1104                 else
1105                         clear_sta_flag(sta, WLAN_STA_MFP);
1106         }
1107
1108         if (mask & BIT(NL80211_STA_FLAG_TDLS_PEER)) {
1109                 if (set & BIT(NL80211_STA_FLAG_TDLS_PEER))
1110                         set_sta_flag(sta, WLAN_STA_TDLS_PEER);
1111                 else
1112                         clear_sta_flag(sta, WLAN_STA_TDLS_PEER);
1113         }
1114
1115         /* mark TDLS channel switch support, if the AP allows it */
1116         if (test_sta_flag(sta, WLAN_STA_TDLS_PEER) &&
1117             !sdata->u.mgd.tdls_chan_switch_prohibited &&
1118             params->ext_capab_len >= 4 &&
1119             params->ext_capab[3] & WLAN_EXT_CAPA4_TDLS_CHAN_SWITCH)
1120                 set_sta_flag(sta, WLAN_STA_TDLS_CHAN_SWITCH);
1121
1122         if (test_sta_flag(sta, WLAN_STA_TDLS_PEER) &&
1123             !sdata->u.mgd.tdls_wider_bw_prohibited &&
1124             ieee80211_hw_check(&local->hw, TDLS_WIDER_BW) &&
1125             params->ext_capab_len >= 8 &&
1126             params->ext_capab[7] & WLAN_EXT_CAPA8_TDLS_WIDE_BW_ENABLED)
1127                 set_sta_flag(sta, WLAN_STA_TDLS_WIDER_BW);
1128
1129         if (params->sta_modify_mask & STATION_PARAM_APPLY_UAPSD) {
1130                 sta->sta.uapsd_queues = params->uapsd_queues;
1131                 sta->sta.max_sp = params->max_sp;
1132         }
1133
1134         /*
1135          * cfg80211 validates this (1-2007) and allows setting the AID
1136          * only when creating a new station entry
1137          */
1138         if (params->aid)
1139                 sta->sta.aid = params->aid;
1140
1141         /*
1142          * Some of the following updates would be racy if called on an
1143          * existing station, via ieee80211_change_station(). However,
1144          * all such changes are rejected by cfg80211 except for updates
1145          * changing the supported rates on an existing but not yet used
1146          * TDLS peer.
1147          */
1148
1149         if (params->listen_interval >= 0)
1150                 sta->listen_interval = params->listen_interval;
1151
1152         if (params->supported_rates) {
1153                 ieee80211_parse_bitrates(&sdata->vif.bss_conf.chandef,
1154                                          sband, params->supported_rates,
1155                                          params->supported_rates_len,
1156                                          &sta->sta.supp_rates[band]);
1157         }
1158
1159         if (params->ht_capa)
1160                 ieee80211_ht_cap_ie_to_sta_ht_cap(sdata, sband,
1161                                                   params->ht_capa, sta);
1162
1163         if (params->vht_capa)
1164                 ieee80211_vht_cap_ie_to_sta_vht_cap(sdata, sband,
1165                                                     params->vht_capa, sta);
1166
1167         if (params->opmode_notif_used) {
1168                 /* returned value is only needed for rc update, but the
1169                  * rc isn't initialized here yet, so ignore it
1170                  */
1171                 __ieee80211_vht_handle_opmode(sdata, sta,
1172                                               params->opmode_notif, band);
1173         }
1174
1175         if (ieee80211_vif_is_mesh(&sdata->vif))
1176                 sta_apply_mesh_params(local, sta, params);
1177
1178         /* set the STA state after all sta info from usermode has been set */
1179         if (test_sta_flag(sta, WLAN_STA_TDLS_PEER) ||
1180             set & BIT(NL80211_STA_FLAG_ASSOCIATED)) {
1181                 ret = sta_apply_auth_flags(local, sta, mask, set);
1182                 if (ret)
1183                         return ret;
1184         }
1185
1186         return 0;
1187 }
1188
1189 static int ieee80211_add_station(struct wiphy *wiphy, struct net_device *dev,
1190                                  const u8 *mac,
1191                                  struct station_parameters *params)
1192 {
1193         struct ieee80211_local *local = wiphy_priv(wiphy);
1194         struct sta_info *sta;
1195         struct ieee80211_sub_if_data *sdata;
1196         int err;
1197         int layer2_update;
1198
1199         if (params->vlan) {
1200                 sdata = IEEE80211_DEV_TO_SUB_IF(params->vlan);
1201
1202                 if (sdata->vif.type != NL80211_IFTYPE_AP_VLAN &&
1203                     sdata->vif.type != NL80211_IFTYPE_AP)
1204                         return -EINVAL;
1205         } else
1206                 sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1207
1208         if (ether_addr_equal(mac, sdata->vif.addr))
1209                 return -EINVAL;
1210
1211         if (is_multicast_ether_addr(mac))
1212                 return -EINVAL;
1213
1214         sta = sta_info_alloc(sdata, mac, GFP_KERNEL);
1215         if (!sta)
1216                 return -ENOMEM;
1217
1218         /*
1219          * defaults -- if userspace wants something else we'll
1220          * change it accordingly in sta_apply_parameters()
1221          */
1222         if (!(params->sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)) &&
1223             !(params->sta_flags_set & (BIT(NL80211_STA_FLAG_AUTHENTICATED) |
1224                                         BIT(NL80211_STA_FLAG_ASSOCIATED)))) {
1225                 sta_info_pre_move_state(sta, IEEE80211_STA_AUTH);
1226                 sta_info_pre_move_state(sta, IEEE80211_STA_ASSOC);
1227         }
1228         if (params->sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER))
1229                 sta->sta.tdls = true;
1230
1231         err = sta_apply_parameters(local, sta, params);
1232         if (err) {
1233                 sta_info_free(local, sta);
1234                 return err;
1235         }
1236
1237         /*
1238          * for TDLS and for unassociated station, rate control should be
1239          * initialized only when rates are known and station is marked
1240          * authorized/associated
1241          */
1242         if (!test_sta_flag(sta, WLAN_STA_TDLS_PEER) &&
1243             test_sta_flag(sta, WLAN_STA_ASSOC))
1244                 rate_control_rate_init(sta);
1245
1246         layer2_update = sdata->vif.type == NL80211_IFTYPE_AP_VLAN ||
1247                 sdata->vif.type == NL80211_IFTYPE_AP;
1248
1249         err = sta_info_insert_rcu(sta);
1250         if (err) {
1251                 rcu_read_unlock();
1252                 return err;
1253         }
1254
1255         if (layer2_update)
1256                 ieee80211_send_layer2_update(sta);
1257
1258         rcu_read_unlock();
1259
1260         return 0;
1261 }
1262
1263 static int ieee80211_del_station(struct wiphy *wiphy, struct net_device *dev,
1264                                  struct station_del_parameters *params)
1265 {
1266         struct ieee80211_sub_if_data *sdata;
1267
1268         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1269
1270         if (params->mac)
1271                 return sta_info_destroy_addr_bss(sdata, params->mac);
1272
1273         sta_info_flush(sdata);
1274         return 0;
1275 }
1276
1277 static int ieee80211_change_station(struct wiphy *wiphy,
1278                                     struct net_device *dev, const u8 *mac,
1279                                     struct station_parameters *params)
1280 {
1281         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1282         struct ieee80211_local *local = wiphy_priv(wiphy);
1283         struct sta_info *sta;
1284         struct ieee80211_sub_if_data *vlansdata;
1285         enum cfg80211_station_type statype;
1286         int err;
1287
1288         mutex_lock(&local->sta_mtx);
1289
1290         sta = sta_info_get_bss(sdata, mac);
1291         if (!sta) {
1292                 err = -ENOENT;
1293                 goto out_err;
1294         }
1295
1296         switch (sdata->vif.type) {
1297         case NL80211_IFTYPE_MESH_POINT:
1298                 if (sdata->u.mesh.user_mpm)
1299                         statype = CFG80211_STA_MESH_PEER_USER;
1300                 else
1301                         statype = CFG80211_STA_MESH_PEER_KERNEL;
1302                 break;
1303         case NL80211_IFTYPE_ADHOC:
1304                 statype = CFG80211_STA_IBSS;
1305                 break;
1306         case NL80211_IFTYPE_STATION:
1307                 if (!test_sta_flag(sta, WLAN_STA_TDLS_PEER)) {
1308                         statype = CFG80211_STA_AP_STA;
1309                         break;
1310                 }
1311                 if (test_sta_flag(sta, WLAN_STA_AUTHORIZED))
1312                         statype = CFG80211_STA_TDLS_PEER_ACTIVE;
1313                 else
1314                         statype = CFG80211_STA_TDLS_PEER_SETUP;
1315                 break;
1316         case NL80211_IFTYPE_AP:
1317         case NL80211_IFTYPE_AP_VLAN:
1318                 if (test_sta_flag(sta, WLAN_STA_ASSOC))
1319                         statype = CFG80211_STA_AP_CLIENT;
1320                 else
1321                         statype = CFG80211_STA_AP_CLIENT_UNASSOC;
1322                 break;
1323         default:
1324                 err = -EOPNOTSUPP;
1325                 goto out_err;
1326         }
1327
1328         err = cfg80211_check_station_change(wiphy, params, statype);
1329         if (err)
1330                 goto out_err;
1331
1332         if (params->vlan && params->vlan != sta->sdata->dev) {
1333                 bool prev_4addr = false;
1334                 bool new_4addr = false;
1335
1336                 vlansdata = IEEE80211_DEV_TO_SUB_IF(params->vlan);
1337
1338                 if (params->vlan->ieee80211_ptr->use_4addr) {
1339                         if (vlansdata->u.vlan.sta) {
1340                                 err = -EBUSY;
1341                                 goto out_err;
1342                         }
1343
1344                         rcu_assign_pointer(vlansdata->u.vlan.sta, sta);
1345                         new_4addr = true;
1346                 }
1347
1348                 if (sta->sdata->vif.type == NL80211_IFTYPE_AP_VLAN &&
1349                     sta->sdata->u.vlan.sta) {
1350                         RCU_INIT_POINTER(sta->sdata->u.vlan.sta, NULL);
1351                         prev_4addr = true;
1352                 }
1353
1354                 sta->sdata = vlansdata;
1355                 ieee80211_check_fast_xmit(sta);
1356
1357                 if (sta->sta_state == IEEE80211_STA_AUTHORIZED &&
1358                     prev_4addr != new_4addr) {
1359                         if (new_4addr)
1360                                 atomic_dec(&sta->sdata->bss->num_mcast_sta);
1361                         else
1362                                 atomic_inc(&sta->sdata->bss->num_mcast_sta);
1363                 }
1364
1365                 ieee80211_send_layer2_update(sta);
1366         }
1367
1368         err = sta_apply_parameters(local, sta, params);
1369         if (err)
1370                 goto out_err;
1371
1372         mutex_unlock(&local->sta_mtx);
1373
1374         if ((sdata->vif.type == NL80211_IFTYPE_AP ||
1375              sdata->vif.type == NL80211_IFTYPE_AP_VLAN) &&
1376             sta->known_smps_mode != sta->sdata->bss->req_smps &&
1377             test_sta_flag(sta, WLAN_STA_AUTHORIZED) &&
1378             sta_info_tx_streams(sta) != 1) {
1379                 ht_dbg(sta->sdata,
1380                        "%pM just authorized and MIMO capable - update SMPS\n",
1381                        sta->sta.addr);
1382                 ieee80211_send_smps_action(sta->sdata,
1383                         sta->sdata->bss->req_smps,
1384                         sta->sta.addr,
1385                         sta->sdata->vif.bss_conf.bssid);
1386         }
1387
1388         if (sdata->vif.type == NL80211_IFTYPE_STATION &&
1389             params->sta_flags_mask & BIT(NL80211_STA_FLAG_AUTHORIZED)) {
1390                 ieee80211_recalc_ps(local);
1391                 ieee80211_recalc_ps_vif(sdata);
1392         }
1393
1394         return 0;
1395 out_err:
1396         mutex_unlock(&local->sta_mtx);
1397         return err;
1398 }
1399
1400 #ifdef CONFIG_MAC80211_MESH
1401 static int ieee80211_add_mpath(struct wiphy *wiphy, struct net_device *dev,
1402                                const u8 *dst, const u8 *next_hop)
1403 {
1404         struct ieee80211_sub_if_data *sdata;
1405         struct mesh_path *mpath;
1406         struct sta_info *sta;
1407
1408         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1409
1410         rcu_read_lock();
1411         sta = sta_info_get(sdata, next_hop);
1412         if (!sta) {
1413                 rcu_read_unlock();
1414                 return -ENOENT;
1415         }
1416
1417         mpath = mesh_path_add(sdata, dst);
1418         if (IS_ERR(mpath)) {
1419                 rcu_read_unlock();
1420                 return PTR_ERR(mpath);
1421         }
1422
1423         mesh_path_fix_nexthop(mpath, sta);
1424
1425         rcu_read_unlock();
1426         return 0;
1427 }
1428
1429 static int ieee80211_del_mpath(struct wiphy *wiphy, struct net_device *dev,
1430                                const u8 *dst)
1431 {
1432         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1433
1434         if (dst)
1435                 return mesh_path_del(sdata, dst);
1436
1437         mesh_path_flush_by_iface(sdata);
1438         return 0;
1439 }
1440
1441 static int ieee80211_change_mpath(struct wiphy *wiphy, struct net_device *dev,
1442                                   const u8 *dst, const u8 *next_hop)
1443 {
1444         struct ieee80211_sub_if_data *sdata;
1445         struct mesh_path *mpath;
1446         struct sta_info *sta;
1447
1448         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1449
1450         rcu_read_lock();
1451
1452         sta = sta_info_get(sdata, next_hop);
1453         if (!sta) {
1454                 rcu_read_unlock();
1455                 return -ENOENT;
1456         }
1457
1458         mpath = mesh_path_lookup(sdata, dst);
1459         if (!mpath) {
1460                 rcu_read_unlock();
1461                 return -ENOENT;
1462         }
1463
1464         mesh_path_fix_nexthop(mpath, sta);
1465
1466         rcu_read_unlock();
1467         return 0;
1468 }
1469
1470 static void mpath_set_pinfo(struct mesh_path *mpath, u8 *next_hop,
1471                             struct mpath_info *pinfo)
1472 {
1473         struct sta_info *next_hop_sta = rcu_dereference(mpath->next_hop);
1474
1475         if (next_hop_sta)
1476                 memcpy(next_hop, next_hop_sta->sta.addr, ETH_ALEN);
1477         else
1478                 eth_zero_addr(next_hop);
1479
1480         memset(pinfo, 0, sizeof(*pinfo));
1481
1482         pinfo->generation = mesh_paths_generation;
1483
1484         pinfo->filled = MPATH_INFO_FRAME_QLEN |
1485                         MPATH_INFO_SN |
1486                         MPATH_INFO_METRIC |
1487                         MPATH_INFO_EXPTIME |
1488                         MPATH_INFO_DISCOVERY_TIMEOUT |
1489                         MPATH_INFO_DISCOVERY_RETRIES |
1490                         MPATH_INFO_FLAGS;
1491
1492         pinfo->frame_qlen = mpath->frame_queue.qlen;
1493         pinfo->sn = mpath->sn;
1494         pinfo->metric = mpath->metric;
1495         if (time_before(jiffies, mpath->exp_time))
1496                 pinfo->exptime = jiffies_to_msecs(mpath->exp_time - jiffies);
1497         pinfo->discovery_timeout =
1498                         jiffies_to_msecs(mpath->discovery_timeout);
1499         pinfo->discovery_retries = mpath->discovery_retries;
1500         if (mpath->flags & MESH_PATH_ACTIVE)
1501                 pinfo->flags |= NL80211_MPATH_FLAG_ACTIVE;
1502         if (mpath->flags & MESH_PATH_RESOLVING)
1503                 pinfo->flags |= NL80211_MPATH_FLAG_RESOLVING;
1504         if (mpath->flags & MESH_PATH_SN_VALID)
1505                 pinfo->flags |= NL80211_MPATH_FLAG_SN_VALID;
1506         if (mpath->flags & MESH_PATH_FIXED)
1507                 pinfo->flags |= NL80211_MPATH_FLAG_FIXED;
1508         if (mpath->flags & MESH_PATH_RESOLVED)
1509                 pinfo->flags |= NL80211_MPATH_FLAG_RESOLVED;
1510 }
1511
1512 static int ieee80211_get_mpath(struct wiphy *wiphy, struct net_device *dev,
1513                                u8 *dst, u8 *next_hop, struct mpath_info *pinfo)
1514
1515 {
1516         struct ieee80211_sub_if_data *sdata;
1517         struct mesh_path *mpath;
1518
1519         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1520
1521         rcu_read_lock();
1522         mpath = mesh_path_lookup(sdata, dst);
1523         if (!mpath) {
1524                 rcu_read_unlock();
1525                 return -ENOENT;
1526         }
1527         memcpy(dst, mpath->dst, ETH_ALEN);
1528         mpath_set_pinfo(mpath, next_hop, pinfo);
1529         rcu_read_unlock();
1530         return 0;
1531 }
1532
1533 static int ieee80211_dump_mpath(struct wiphy *wiphy, struct net_device *dev,
1534                                 int idx, u8 *dst, u8 *next_hop,
1535                                 struct mpath_info *pinfo)
1536 {
1537         struct ieee80211_sub_if_data *sdata;
1538         struct mesh_path *mpath;
1539
1540         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1541
1542         rcu_read_lock();
1543         mpath = mesh_path_lookup_by_idx(sdata, idx);
1544         if (!mpath) {
1545                 rcu_read_unlock();
1546                 return -ENOENT;
1547         }
1548         memcpy(dst, mpath->dst, ETH_ALEN);
1549         mpath_set_pinfo(mpath, next_hop, pinfo);
1550         rcu_read_unlock();
1551         return 0;
1552 }
1553
1554 static void mpp_set_pinfo(struct mesh_path *mpath, u8 *mpp,
1555                           struct mpath_info *pinfo)
1556 {
1557         memset(pinfo, 0, sizeof(*pinfo));
1558         memcpy(mpp, mpath->mpp, ETH_ALEN);
1559
1560         pinfo->generation = mpp_paths_generation;
1561 }
1562
1563 static int ieee80211_get_mpp(struct wiphy *wiphy, struct net_device *dev,
1564                              u8 *dst, u8 *mpp, struct mpath_info *pinfo)
1565
1566 {
1567         struct ieee80211_sub_if_data *sdata;
1568         struct mesh_path *mpath;
1569
1570         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1571
1572         rcu_read_lock();
1573         mpath = mpp_path_lookup(sdata, dst);
1574         if (!mpath) {
1575                 rcu_read_unlock();
1576                 return -ENOENT;
1577         }
1578         memcpy(dst, mpath->dst, ETH_ALEN);
1579         mpp_set_pinfo(mpath, mpp, pinfo);
1580         rcu_read_unlock();
1581         return 0;
1582 }
1583
1584 static int ieee80211_dump_mpp(struct wiphy *wiphy, struct net_device *dev,
1585                               int idx, u8 *dst, u8 *mpp,
1586                               struct mpath_info *pinfo)
1587 {
1588         struct ieee80211_sub_if_data *sdata;
1589         struct mesh_path *mpath;
1590
1591         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1592
1593         rcu_read_lock();
1594         mpath = mpp_path_lookup_by_idx(sdata, idx);
1595         if (!mpath) {
1596                 rcu_read_unlock();
1597                 return -ENOENT;
1598         }
1599         memcpy(dst, mpath->dst, ETH_ALEN);
1600         mpp_set_pinfo(mpath, mpp, pinfo);
1601         rcu_read_unlock();
1602         return 0;
1603 }
1604
1605 static int ieee80211_get_mesh_config(struct wiphy *wiphy,
1606                                 struct net_device *dev,
1607                                 struct mesh_config *conf)
1608 {
1609         struct ieee80211_sub_if_data *sdata;
1610         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1611
1612         memcpy(conf, &(sdata->u.mesh.mshcfg), sizeof(struct mesh_config));
1613         return 0;
1614 }
1615
1616 static inline bool _chg_mesh_attr(enum nl80211_meshconf_params parm, u32 mask)
1617 {
1618         return (mask >> (parm-1)) & 0x1;
1619 }
1620
1621 static int copy_mesh_setup(struct ieee80211_if_mesh *ifmsh,
1622                 const struct mesh_setup *setup)
1623 {
1624         u8 *new_ie;
1625         const u8 *old_ie;
1626         struct ieee80211_sub_if_data *sdata = container_of(ifmsh,
1627                                         struct ieee80211_sub_if_data, u.mesh);
1628
1629         /* allocate information elements */
1630         new_ie = NULL;
1631         old_ie = ifmsh->ie;
1632
1633         if (setup->ie_len) {
1634                 new_ie = kmemdup(setup->ie, setup->ie_len,
1635                                 GFP_KERNEL);
1636                 if (!new_ie)
1637                         return -ENOMEM;
1638         }
1639         ifmsh->ie_len = setup->ie_len;
1640         ifmsh->ie = new_ie;
1641         kfree(old_ie);
1642
1643         /* now copy the rest of the setup parameters */
1644         ifmsh->mesh_id_len = setup->mesh_id_len;
1645         memcpy(ifmsh->mesh_id, setup->mesh_id, ifmsh->mesh_id_len);
1646         ifmsh->mesh_sp_id = setup->sync_method;
1647         ifmsh->mesh_pp_id = setup->path_sel_proto;
1648         ifmsh->mesh_pm_id = setup->path_metric;
1649         ifmsh->user_mpm = setup->user_mpm;
1650         ifmsh->mesh_auth_id = setup->auth_id;
1651         ifmsh->security = IEEE80211_MESH_SEC_NONE;
1652         if (setup->is_authenticated)
1653                 ifmsh->security |= IEEE80211_MESH_SEC_AUTHED;
1654         if (setup->is_secure)
1655                 ifmsh->security |= IEEE80211_MESH_SEC_SECURED;
1656
1657         /* mcast rate setting in Mesh Node */
1658         memcpy(sdata->vif.bss_conf.mcast_rate, setup->mcast_rate,
1659                                                 sizeof(setup->mcast_rate));
1660         sdata->vif.bss_conf.basic_rates = setup->basic_rates;
1661
1662         sdata->vif.bss_conf.beacon_int = setup->beacon_interval;
1663         sdata->vif.bss_conf.dtim_period = setup->dtim_period;
1664
1665         return 0;
1666 }
1667
1668 static int ieee80211_update_mesh_config(struct wiphy *wiphy,
1669                                         struct net_device *dev, u32 mask,
1670                                         const struct mesh_config *nconf)
1671 {
1672         struct mesh_config *conf;
1673         struct ieee80211_sub_if_data *sdata;
1674         struct ieee80211_if_mesh *ifmsh;
1675
1676         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1677         ifmsh = &sdata->u.mesh;
1678
1679         /* Set the config options which we are interested in setting */
1680         conf = &(sdata->u.mesh.mshcfg);
1681         if (_chg_mesh_attr(NL80211_MESHCONF_RETRY_TIMEOUT, mask))
1682                 conf->dot11MeshRetryTimeout = nconf->dot11MeshRetryTimeout;
1683         if (_chg_mesh_attr(NL80211_MESHCONF_CONFIRM_TIMEOUT, mask))
1684                 conf->dot11MeshConfirmTimeout = nconf->dot11MeshConfirmTimeout;
1685         if (_chg_mesh_attr(NL80211_MESHCONF_HOLDING_TIMEOUT, mask))
1686                 conf->dot11MeshHoldingTimeout = nconf->dot11MeshHoldingTimeout;
1687         if (_chg_mesh_attr(NL80211_MESHCONF_MAX_PEER_LINKS, mask))
1688                 conf->dot11MeshMaxPeerLinks = nconf->dot11MeshMaxPeerLinks;
1689         if (_chg_mesh_attr(NL80211_MESHCONF_MAX_RETRIES, mask))
1690                 conf->dot11MeshMaxRetries = nconf->dot11MeshMaxRetries;
1691         if (_chg_mesh_attr(NL80211_MESHCONF_TTL, mask))
1692                 conf->dot11MeshTTL = nconf->dot11MeshTTL;
1693         if (_chg_mesh_attr(NL80211_MESHCONF_ELEMENT_TTL, mask))
1694                 conf->element_ttl = nconf->element_ttl;
1695         if (_chg_mesh_attr(NL80211_MESHCONF_AUTO_OPEN_PLINKS, mask)) {
1696                 if (ifmsh->user_mpm)
1697                         return -EBUSY;
1698                 conf->auto_open_plinks = nconf->auto_open_plinks;
1699         }
1700         if (_chg_mesh_attr(NL80211_MESHCONF_SYNC_OFFSET_MAX_NEIGHBOR, mask))
1701                 conf->dot11MeshNbrOffsetMaxNeighbor =
1702                         nconf->dot11MeshNbrOffsetMaxNeighbor;
1703         if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES, mask))
1704                 conf->dot11MeshHWMPmaxPREQretries =
1705                         nconf->dot11MeshHWMPmaxPREQretries;
1706         if (_chg_mesh_attr(NL80211_MESHCONF_PATH_REFRESH_TIME, mask))
1707                 conf->path_refresh_time = nconf->path_refresh_time;
1708         if (_chg_mesh_attr(NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT, mask))
1709                 conf->min_discovery_timeout = nconf->min_discovery_timeout;
1710         if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT, mask))
1711                 conf->dot11MeshHWMPactivePathTimeout =
1712                         nconf->dot11MeshHWMPactivePathTimeout;
1713         if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL, mask))
1714                 conf->dot11MeshHWMPpreqMinInterval =
1715                         nconf->dot11MeshHWMPpreqMinInterval;
1716         if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_PERR_MIN_INTERVAL, mask))
1717                 conf->dot11MeshHWMPperrMinInterval =
1718                         nconf->dot11MeshHWMPperrMinInterval;
1719         if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME,
1720                            mask))
1721                 conf->dot11MeshHWMPnetDiameterTraversalTime =
1722                         nconf->dot11MeshHWMPnetDiameterTraversalTime;
1723         if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_ROOTMODE, mask)) {
1724                 conf->dot11MeshHWMPRootMode = nconf->dot11MeshHWMPRootMode;
1725                 ieee80211_mesh_root_setup(ifmsh);
1726         }
1727         if (_chg_mesh_attr(NL80211_MESHCONF_GATE_ANNOUNCEMENTS, mask)) {
1728                 /* our current gate announcement implementation rides on root
1729                  * announcements, so require this ifmsh to also be a root node
1730                  * */
1731                 if (nconf->dot11MeshGateAnnouncementProtocol &&
1732                     !(conf->dot11MeshHWMPRootMode > IEEE80211_ROOTMODE_ROOT)) {
1733                         conf->dot11MeshHWMPRootMode = IEEE80211_PROACTIVE_RANN;
1734                         ieee80211_mesh_root_setup(ifmsh);
1735                 }
1736                 conf->dot11MeshGateAnnouncementProtocol =
1737                         nconf->dot11MeshGateAnnouncementProtocol;
1738         }
1739         if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_RANN_INTERVAL, mask))
1740                 conf->dot11MeshHWMPRannInterval =
1741                         nconf->dot11MeshHWMPRannInterval;
1742         if (_chg_mesh_attr(NL80211_MESHCONF_FORWARDING, mask))
1743                 conf->dot11MeshForwarding = nconf->dot11MeshForwarding;
1744         if (_chg_mesh_attr(NL80211_MESHCONF_RSSI_THRESHOLD, mask)) {
1745                 /* our RSSI threshold implementation is supported only for
1746                  * devices that report signal in dBm.
1747                  */
1748                 if (!ieee80211_hw_check(&sdata->local->hw, SIGNAL_DBM))
1749                         return -ENOTSUPP;
1750                 conf->rssi_threshold = nconf->rssi_threshold;
1751         }
1752         if (_chg_mesh_attr(NL80211_MESHCONF_HT_OPMODE, mask)) {
1753                 conf->ht_opmode = nconf->ht_opmode;
1754                 sdata->vif.bss_conf.ht_operation_mode = nconf->ht_opmode;
1755                 ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_HT);
1756         }
1757         if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_PATH_TO_ROOT_TIMEOUT, mask))
1758                 conf->dot11MeshHWMPactivePathToRootTimeout =
1759                         nconf->dot11MeshHWMPactivePathToRootTimeout;
1760         if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_ROOT_INTERVAL, mask))
1761                 conf->dot11MeshHWMProotInterval =
1762                         nconf->dot11MeshHWMProotInterval;
1763         if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_CONFIRMATION_INTERVAL, mask))
1764                 conf->dot11MeshHWMPconfirmationInterval =
1765                         nconf->dot11MeshHWMPconfirmationInterval;
1766         if (_chg_mesh_attr(NL80211_MESHCONF_POWER_MODE, mask)) {
1767                 conf->power_mode = nconf->power_mode;
1768                 ieee80211_mps_local_status_update(sdata);
1769         }
1770         if (_chg_mesh_attr(NL80211_MESHCONF_AWAKE_WINDOW, mask))
1771                 conf->dot11MeshAwakeWindowDuration =
1772                         nconf->dot11MeshAwakeWindowDuration;
1773         if (_chg_mesh_attr(NL80211_MESHCONF_PLINK_TIMEOUT, mask))
1774                 conf->plink_timeout = nconf->plink_timeout;
1775         ieee80211_mbss_info_change_notify(sdata, BSS_CHANGED_BEACON);
1776         return 0;
1777 }
1778
1779 static int ieee80211_join_mesh(struct wiphy *wiphy, struct net_device *dev,
1780                                const struct mesh_config *conf,
1781                                const struct mesh_setup *setup)
1782 {
1783         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1784         struct ieee80211_if_mesh *ifmsh = &sdata->u.mesh;
1785         int err;
1786
1787         memcpy(&ifmsh->mshcfg, conf, sizeof(struct mesh_config));
1788         err = copy_mesh_setup(ifmsh, setup);
1789         if (err)
1790                 return err;
1791
1792         /* can mesh use other SMPS modes? */
1793         sdata->smps_mode = IEEE80211_SMPS_OFF;
1794         sdata->needed_rx_chains = sdata->local->rx_chains;
1795
1796         mutex_lock(&sdata->local->mtx);
1797         err = ieee80211_vif_use_channel(sdata, &setup->chandef,
1798                                         IEEE80211_CHANCTX_SHARED);
1799         mutex_unlock(&sdata->local->mtx);
1800         if (err)
1801                 return err;
1802
1803         return ieee80211_start_mesh(sdata);
1804 }
1805
1806 static int ieee80211_leave_mesh(struct wiphy *wiphy, struct net_device *dev)
1807 {
1808         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1809
1810         ieee80211_stop_mesh(sdata);
1811         mutex_lock(&sdata->local->mtx);
1812         ieee80211_vif_release_channel(sdata);
1813         mutex_unlock(&sdata->local->mtx);
1814
1815         return 0;
1816 }
1817 #endif
1818
1819 static int ieee80211_change_bss(struct wiphy *wiphy,
1820                                 struct net_device *dev,
1821                                 struct bss_parameters *params)
1822 {
1823         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1824         enum ieee80211_band band;
1825         u32 changed = 0;
1826
1827         if (!sdata_dereference(sdata->u.ap.beacon, sdata))
1828                 return -ENOENT;
1829
1830         band = ieee80211_get_sdata_band(sdata);
1831
1832         if (params->use_cts_prot >= 0) {
1833                 sdata->vif.bss_conf.use_cts_prot = params->use_cts_prot;
1834                 changed |= BSS_CHANGED_ERP_CTS_PROT;
1835         }
1836         if (params->use_short_preamble >= 0) {
1837                 sdata->vif.bss_conf.use_short_preamble =
1838                         params->use_short_preamble;
1839                 changed |= BSS_CHANGED_ERP_PREAMBLE;
1840         }
1841
1842         if (!sdata->vif.bss_conf.use_short_slot &&
1843             band == IEEE80211_BAND_5GHZ) {
1844                 sdata->vif.bss_conf.use_short_slot = true;
1845                 changed |= BSS_CHANGED_ERP_SLOT;
1846         }
1847
1848         if (params->use_short_slot_time >= 0) {
1849                 sdata->vif.bss_conf.use_short_slot =
1850                         params->use_short_slot_time;
1851                 changed |= BSS_CHANGED_ERP_SLOT;
1852         }
1853
1854         if (params->basic_rates) {
1855                 ieee80211_parse_bitrates(&sdata->vif.bss_conf.chandef,
1856                                          wiphy->bands[band],
1857                                          params->basic_rates,
1858                                          params->basic_rates_len,
1859                                          &sdata->vif.bss_conf.basic_rates);
1860                 changed |= BSS_CHANGED_BASIC_RATES;
1861         }
1862
1863         if (params->ap_isolate >= 0) {
1864                 if (params->ap_isolate)
1865                         sdata->flags |= IEEE80211_SDATA_DONT_BRIDGE_PACKETS;
1866                 else
1867                         sdata->flags &= ~IEEE80211_SDATA_DONT_BRIDGE_PACKETS;
1868         }
1869
1870         if (params->ht_opmode >= 0) {
1871                 sdata->vif.bss_conf.ht_operation_mode =
1872                         (u16) params->ht_opmode;
1873                 changed |= BSS_CHANGED_HT;
1874         }
1875
1876         if (params->p2p_ctwindow >= 0) {
1877                 sdata->vif.bss_conf.p2p_noa_attr.oppps_ctwindow &=
1878                                         ~IEEE80211_P2P_OPPPS_CTWINDOW_MASK;
1879                 sdata->vif.bss_conf.p2p_noa_attr.oppps_ctwindow |=
1880                         params->p2p_ctwindow & IEEE80211_P2P_OPPPS_CTWINDOW_MASK;
1881                 changed |= BSS_CHANGED_P2P_PS;
1882         }
1883
1884         if (params->p2p_opp_ps > 0) {
1885                 sdata->vif.bss_conf.p2p_noa_attr.oppps_ctwindow |=
1886                                         IEEE80211_P2P_OPPPS_ENABLE_BIT;
1887                 changed |= BSS_CHANGED_P2P_PS;
1888         } else if (params->p2p_opp_ps == 0) {
1889                 sdata->vif.bss_conf.p2p_noa_attr.oppps_ctwindow &=
1890                                         ~IEEE80211_P2P_OPPPS_ENABLE_BIT;
1891                 changed |= BSS_CHANGED_P2P_PS;
1892         }
1893
1894         ieee80211_bss_info_change_notify(sdata, changed);
1895
1896         return 0;
1897 }
1898
1899 static int ieee80211_set_txq_params(struct wiphy *wiphy,
1900                                     struct net_device *dev,
1901                                     struct ieee80211_txq_params *params)
1902 {
1903         struct ieee80211_local *local = wiphy_priv(wiphy);
1904         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1905         struct ieee80211_tx_queue_params p;
1906
1907         if (!local->ops->conf_tx)
1908                 return -EOPNOTSUPP;
1909
1910         if (local->hw.queues < IEEE80211_NUM_ACS)
1911                 return -EOPNOTSUPP;
1912
1913         memset(&p, 0, sizeof(p));
1914         p.aifs = params->aifs;
1915         p.cw_max = params->cwmax;
1916         p.cw_min = params->cwmin;
1917         p.txop = params->txop;
1918
1919         /*
1920          * Setting tx queue params disables u-apsd because it's only
1921          * called in master mode.
1922          */
1923         p.uapsd = false;
1924
1925         sdata->tx_conf[params->ac] = p;
1926         if (drv_conf_tx(local, sdata, params->ac, &p)) {
1927                 wiphy_debug(local->hw.wiphy,
1928                             "failed to set TX queue parameters for AC %d\n",
1929                             params->ac);
1930                 return -EINVAL;
1931         }
1932
1933         ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_QOS);
1934
1935         return 0;
1936 }
1937
1938 #ifdef CONFIG_PM
1939 static int ieee80211_suspend(struct wiphy *wiphy,
1940                              struct cfg80211_wowlan *wowlan)
1941 {
1942         return __ieee80211_suspend(wiphy_priv(wiphy), wowlan);
1943 }
1944
1945 static int ieee80211_resume(struct wiphy *wiphy)
1946 {
1947         return __ieee80211_resume(wiphy_priv(wiphy));
1948 }
1949 #else
1950 #define ieee80211_suspend NULL
1951 #define ieee80211_resume NULL
1952 #endif
1953
1954 static int ieee80211_scan(struct wiphy *wiphy,
1955                           struct cfg80211_scan_request *req)
1956 {
1957         struct ieee80211_sub_if_data *sdata;
1958
1959         sdata = IEEE80211_WDEV_TO_SUB_IF(req->wdev);
1960
1961         switch (ieee80211_vif_type_p2p(&sdata->vif)) {
1962         case NL80211_IFTYPE_STATION:
1963         case NL80211_IFTYPE_ADHOC:
1964         case NL80211_IFTYPE_MESH_POINT:
1965         case NL80211_IFTYPE_P2P_CLIENT:
1966         case NL80211_IFTYPE_P2P_DEVICE:
1967                 break;
1968         case NL80211_IFTYPE_P2P_GO:
1969                 if (sdata->local->ops->hw_scan)
1970                         break;
1971                 /*
1972                  * FIXME: implement NoA while scanning in software,
1973                  * for now fall through to allow scanning only when
1974                  * beaconing hasn't been configured yet
1975                  */
1976         case NL80211_IFTYPE_AP:
1977                 /*
1978                  * If the scan has been forced (and the driver supports
1979                  * forcing), don't care about being beaconing already.
1980                  * This will create problems to the attached stations (e.g. all
1981                  * the  frames sent while scanning on other channel will be
1982                  * lost)
1983                  */
1984                 if (sdata->u.ap.beacon &&
1985                     (!(wiphy->features & NL80211_FEATURE_AP_SCAN) ||
1986                      !(req->flags & NL80211_SCAN_FLAG_AP)))
1987                         return -EOPNOTSUPP;
1988                 break;
1989         default:
1990                 return -EOPNOTSUPP;
1991         }
1992
1993         return ieee80211_request_scan(sdata, req);
1994 }
1995
1996 static int
1997 ieee80211_sched_scan_start(struct wiphy *wiphy,
1998                            struct net_device *dev,
1999                            struct cfg80211_sched_scan_request *req)
2000 {
2001         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2002
2003         if (!sdata->local->ops->sched_scan_start)
2004                 return -EOPNOTSUPP;
2005
2006         return ieee80211_request_sched_scan_start(sdata, req);
2007 }
2008
2009 static int
2010 ieee80211_sched_scan_stop(struct wiphy *wiphy, struct net_device *dev)
2011 {
2012         struct ieee80211_local *local = wiphy_priv(wiphy);
2013
2014         if (!local->ops->sched_scan_stop)
2015                 return -EOPNOTSUPP;
2016
2017         return ieee80211_request_sched_scan_stop(local);
2018 }
2019
2020 static int ieee80211_auth(struct wiphy *wiphy, struct net_device *dev,
2021                           struct cfg80211_auth_request *req)
2022 {
2023         return ieee80211_mgd_auth(IEEE80211_DEV_TO_SUB_IF(dev), req);
2024 }
2025
2026 static int ieee80211_assoc(struct wiphy *wiphy, struct net_device *dev,
2027                            struct cfg80211_assoc_request *req)
2028 {
2029         return ieee80211_mgd_assoc(IEEE80211_DEV_TO_SUB_IF(dev), req);
2030 }
2031
2032 static int ieee80211_deauth(struct wiphy *wiphy, struct net_device *dev,
2033                             struct cfg80211_deauth_request *req)
2034 {
2035         return ieee80211_mgd_deauth(IEEE80211_DEV_TO_SUB_IF(dev), req);
2036 }
2037
2038 static int ieee80211_disassoc(struct wiphy *wiphy, struct net_device *dev,
2039                               struct cfg80211_disassoc_request *req)
2040 {
2041         return ieee80211_mgd_disassoc(IEEE80211_DEV_TO_SUB_IF(dev), req);
2042 }
2043
2044 static int ieee80211_join_ibss(struct wiphy *wiphy, struct net_device *dev,
2045                                struct cfg80211_ibss_params *params)
2046 {
2047         return ieee80211_ibss_join(IEEE80211_DEV_TO_SUB_IF(dev), params);
2048 }
2049
2050 static int ieee80211_leave_ibss(struct wiphy *wiphy, struct net_device *dev)
2051 {
2052         return ieee80211_ibss_leave(IEEE80211_DEV_TO_SUB_IF(dev));
2053 }
2054
2055 static int ieee80211_join_ocb(struct wiphy *wiphy, struct net_device *dev,
2056                               struct ocb_setup *setup)
2057 {
2058         return ieee80211_ocb_join(IEEE80211_DEV_TO_SUB_IF(dev), setup);
2059 }
2060
2061 static int ieee80211_leave_ocb(struct wiphy *wiphy, struct net_device *dev)
2062 {
2063         return ieee80211_ocb_leave(IEEE80211_DEV_TO_SUB_IF(dev));
2064 }
2065
2066 static int ieee80211_set_mcast_rate(struct wiphy *wiphy, struct net_device *dev,
2067                                     int rate[IEEE80211_NUM_BANDS])
2068 {
2069         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2070
2071         memcpy(sdata->vif.bss_conf.mcast_rate, rate,
2072                sizeof(int) * IEEE80211_NUM_BANDS);
2073
2074         return 0;
2075 }
2076
2077 static int ieee80211_set_wiphy_params(struct wiphy *wiphy, u32 changed)
2078 {
2079         struct ieee80211_local *local = wiphy_priv(wiphy);
2080         int err;
2081
2082         if (changed & WIPHY_PARAM_FRAG_THRESHOLD) {
2083                 ieee80211_check_fast_xmit_all(local);
2084
2085                 err = drv_set_frag_threshold(local, wiphy->frag_threshold);
2086
2087                 if (err) {
2088                         ieee80211_check_fast_xmit_all(local);
2089                         return err;
2090                 }
2091         }
2092
2093         if ((changed & WIPHY_PARAM_COVERAGE_CLASS) ||
2094             (changed & WIPHY_PARAM_DYN_ACK)) {
2095                 s16 coverage_class;
2096
2097                 coverage_class = changed & WIPHY_PARAM_COVERAGE_CLASS ?
2098                                         wiphy->coverage_class : -1;
2099                 err = drv_set_coverage_class(local, coverage_class);
2100
2101                 if (err)
2102                         return err;
2103         }
2104
2105         if (changed & WIPHY_PARAM_RTS_THRESHOLD) {
2106                 err = drv_set_rts_threshold(local, wiphy->rts_threshold);
2107
2108                 if (err)
2109                         return err;
2110         }
2111
2112         if (changed & WIPHY_PARAM_RETRY_SHORT) {
2113                 if (wiphy->retry_short > IEEE80211_MAX_TX_RETRY)
2114                         return -EINVAL;
2115                 local->hw.conf.short_frame_max_tx_count = wiphy->retry_short;
2116         }
2117         if (changed & WIPHY_PARAM_RETRY_LONG) {
2118                 if (wiphy->retry_long > IEEE80211_MAX_TX_RETRY)
2119                         return -EINVAL;
2120                 local->hw.conf.long_frame_max_tx_count = wiphy->retry_long;
2121         }
2122         if (changed &
2123             (WIPHY_PARAM_RETRY_SHORT | WIPHY_PARAM_RETRY_LONG))
2124                 ieee80211_hw_config(local, IEEE80211_CONF_CHANGE_RETRY_LIMITS);
2125
2126         return 0;
2127 }
2128
2129 static int ieee80211_set_tx_power(struct wiphy *wiphy,
2130                                   struct wireless_dev *wdev,
2131                                   enum nl80211_tx_power_setting type, int mbm)
2132 {
2133         struct ieee80211_local *local = wiphy_priv(wiphy);
2134         struct ieee80211_sub_if_data *sdata;
2135         enum nl80211_tx_power_setting txp_type = type;
2136         bool update_txp_type = false;
2137
2138         if (wdev) {
2139                 sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
2140
2141                 switch (type) {
2142                 case NL80211_TX_POWER_AUTOMATIC:
2143                         sdata->user_power_level = IEEE80211_UNSET_POWER_LEVEL;
2144                         txp_type = NL80211_TX_POWER_LIMITED;
2145                         break;
2146                 case NL80211_TX_POWER_LIMITED:
2147                 case NL80211_TX_POWER_FIXED:
2148                         if (mbm < 0 || (mbm % 100))
2149                                 return -EOPNOTSUPP;
2150                         sdata->user_power_level = MBM_TO_DBM(mbm);
2151                         break;
2152                 }
2153
2154                 if (txp_type != sdata->vif.bss_conf.txpower_type) {
2155                         update_txp_type = true;
2156                         sdata->vif.bss_conf.txpower_type = txp_type;
2157                 }
2158
2159                 ieee80211_recalc_txpower(sdata, update_txp_type);
2160
2161                 return 0;
2162         }
2163
2164         switch (type) {
2165         case NL80211_TX_POWER_AUTOMATIC:
2166                 local->user_power_level = IEEE80211_UNSET_POWER_LEVEL;
2167                 txp_type = NL80211_TX_POWER_LIMITED;
2168                 break;
2169         case NL80211_TX_POWER_LIMITED:
2170         case NL80211_TX_POWER_FIXED:
2171                 if (mbm < 0 || (mbm % 100))
2172                         return -EOPNOTSUPP;
2173                 local->user_power_level = MBM_TO_DBM(mbm);
2174                 break;
2175         }
2176
2177         mutex_lock(&local->iflist_mtx);
2178         list_for_each_entry(sdata, &local->interfaces, list) {
2179                 sdata->user_power_level = local->user_power_level;
2180                 if (txp_type != sdata->vif.bss_conf.txpower_type)
2181                         update_txp_type = true;
2182                 sdata->vif.bss_conf.txpower_type = txp_type;
2183         }
2184         list_for_each_entry(sdata, &local->interfaces, list)
2185                 ieee80211_recalc_txpower(sdata, update_txp_type);
2186         mutex_unlock(&local->iflist_mtx);
2187
2188         return 0;
2189 }
2190
2191 static int ieee80211_get_tx_power(struct wiphy *wiphy,
2192                                   struct wireless_dev *wdev,
2193                                   int *dbm)
2194 {
2195         struct ieee80211_local *local = wiphy_priv(wiphy);
2196         struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
2197
2198         if (local->ops->get_txpower)
2199                 return drv_get_txpower(local, sdata, dbm);
2200
2201         if (!local->use_chanctx)
2202                 *dbm = local->hw.conf.power_level;
2203         else
2204                 *dbm = sdata->vif.bss_conf.txpower;
2205
2206         return 0;
2207 }
2208
2209 static int ieee80211_set_wds_peer(struct wiphy *wiphy, struct net_device *dev,
2210                                   const u8 *addr)
2211 {
2212         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2213
2214         memcpy(&sdata->u.wds.remote_addr, addr, ETH_ALEN);
2215
2216         return 0;
2217 }
2218
2219 static void ieee80211_rfkill_poll(struct wiphy *wiphy)
2220 {
2221         struct ieee80211_local *local = wiphy_priv(wiphy);
2222
2223         drv_rfkill_poll(local);
2224 }
2225
2226 #ifdef CONFIG_NL80211_TESTMODE
2227 static int ieee80211_testmode_cmd(struct wiphy *wiphy,
2228                                   struct wireless_dev *wdev,
2229                                   void *data, int len)
2230 {
2231         struct ieee80211_local *local = wiphy_priv(wiphy);
2232         struct ieee80211_vif *vif = NULL;
2233
2234         if (!local->ops->testmode_cmd)
2235                 return -EOPNOTSUPP;
2236
2237         if (wdev) {
2238                 struct ieee80211_sub_if_data *sdata;
2239
2240                 sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
2241                 if (sdata->flags & IEEE80211_SDATA_IN_DRIVER)
2242                         vif = &sdata->vif;
2243         }
2244
2245         return local->ops->testmode_cmd(&local->hw, vif, data, len);
2246 }
2247
2248 static int ieee80211_testmode_dump(struct wiphy *wiphy,
2249                                    struct sk_buff *skb,
2250                                    struct netlink_callback *cb,
2251                                    void *data, int len)
2252 {
2253         struct ieee80211_local *local = wiphy_priv(wiphy);
2254
2255         if (!local->ops->testmode_dump)
2256                 return -EOPNOTSUPP;
2257
2258         return local->ops->testmode_dump(&local->hw, skb, cb, data, len);
2259 }
2260 #endif
2261
2262 int __ieee80211_request_smps_ap(struct ieee80211_sub_if_data *sdata,
2263                                 enum ieee80211_smps_mode smps_mode)
2264 {
2265         struct sta_info *sta;
2266         enum ieee80211_smps_mode old_req;
2267
2268         if (WARN_ON_ONCE(sdata->vif.type != NL80211_IFTYPE_AP))
2269                 return -EINVAL;
2270
2271         if (sdata->vif.bss_conf.chandef.width == NL80211_CHAN_WIDTH_20_NOHT)
2272                 return 0;
2273
2274         old_req = sdata->u.ap.req_smps;
2275         sdata->u.ap.req_smps = smps_mode;
2276
2277         /* AUTOMATIC doesn't mean much for AP - don't allow it */
2278         if (old_req == smps_mode ||
2279             smps_mode == IEEE80211_SMPS_AUTOMATIC)
2280                 return 0;
2281
2282          /* If no associated stations, there's no need to do anything */
2283         if (!atomic_read(&sdata->u.ap.num_mcast_sta)) {
2284                 sdata->smps_mode = smps_mode;
2285                 ieee80211_queue_work(&sdata->local->hw, &sdata->recalc_smps);
2286                 return 0;
2287         }
2288
2289         ht_dbg(sdata,
2290                "SMPS %d requested in AP mode, sending Action frame to %d stations\n",
2291                smps_mode, atomic_read(&sdata->u.ap.num_mcast_sta));
2292
2293         mutex_lock(&sdata->local->sta_mtx);
2294         list_for_each_entry(sta, &sdata->local->sta_list, list) {
2295                 /*
2296                  * Only stations associated to our AP and
2297                  * associated VLANs
2298                  */
2299                 if (sta->sdata->bss != &sdata->u.ap)
2300                         continue;
2301
2302                 /* This station doesn't support MIMO - skip it */
2303                 if (sta_info_tx_streams(sta) == 1)
2304                         continue;
2305
2306                 /*
2307                  * Don't wake up a STA just to send the action frame
2308                  * unless we are getting more restrictive.
2309                  */
2310                 if (test_sta_flag(sta, WLAN_STA_PS_STA) &&
2311                     !ieee80211_smps_is_restrictive(sta->known_smps_mode,
2312                                                    smps_mode)) {
2313                         ht_dbg(sdata, "Won't send SMPS to sleeping STA %pM\n",
2314                                sta->sta.addr);
2315                         continue;
2316                 }
2317
2318                 /*
2319                  * If the STA is not authorized, wait until it gets
2320                  * authorized and the action frame will be sent then.
2321                  */
2322                 if (!test_sta_flag(sta, WLAN_STA_AUTHORIZED))
2323                         continue;
2324
2325                 ht_dbg(sdata, "Sending SMPS to %pM\n", sta->sta.addr);
2326                 ieee80211_send_smps_action(sdata, smps_mode, sta->sta.addr,
2327                                            sdata->vif.bss_conf.bssid);
2328         }
2329         mutex_unlock(&sdata->local->sta_mtx);
2330
2331         sdata->smps_mode = smps_mode;
2332         ieee80211_queue_work(&sdata->local->hw, &sdata->recalc_smps);
2333
2334         return 0;
2335 }
2336
2337 int __ieee80211_request_smps_mgd(struct ieee80211_sub_if_data *sdata,
2338                                  enum ieee80211_smps_mode smps_mode)
2339 {
2340         const u8 *ap;
2341         enum ieee80211_smps_mode old_req;
2342         int err;
2343         struct sta_info *sta;
2344         bool tdls_peer_found = false;
2345
2346         lockdep_assert_held(&sdata->wdev.mtx);
2347
2348         if (WARN_ON_ONCE(sdata->vif.type != NL80211_IFTYPE_STATION))
2349                 return -EINVAL;
2350
2351         old_req = sdata->u.mgd.req_smps;
2352         sdata->u.mgd.req_smps = smps_mode;
2353
2354         if (old_req == smps_mode &&
2355             smps_mode != IEEE80211_SMPS_AUTOMATIC)
2356                 return 0;
2357
2358         /*
2359          * If not associated, or current association is not an HT
2360          * association, there's no need to do anything, just store
2361          * the new value until we associate.
2362          */
2363         if (!sdata->u.mgd.associated ||
2364             sdata->vif.bss_conf.chandef.width == NL80211_CHAN_WIDTH_20_NOHT)
2365                 return 0;
2366
2367         ap = sdata->u.mgd.associated->bssid;
2368
2369         rcu_read_lock();
2370         list_for_each_entry_rcu(sta, &sdata->local->sta_list, list) {
2371                 if (!sta->sta.tdls || sta->sdata != sdata || !sta->uploaded ||
2372                     !test_sta_flag(sta, WLAN_STA_AUTHORIZED))
2373                         continue;
2374
2375                 tdls_peer_found = true;
2376                 break;
2377         }
2378         rcu_read_unlock();
2379
2380         if (smps_mode == IEEE80211_SMPS_AUTOMATIC) {
2381                 if (tdls_peer_found || !sdata->u.mgd.powersave)
2382                         smps_mode = IEEE80211_SMPS_OFF;
2383                 else
2384                         smps_mode = IEEE80211_SMPS_DYNAMIC;
2385         }
2386
2387         /* send SM PS frame to AP */
2388         err = ieee80211_send_smps_action(sdata, smps_mode,
2389                                          ap, ap);
2390         if (err)
2391                 sdata->u.mgd.req_smps = old_req;
2392         else if (smps_mode != IEEE80211_SMPS_OFF && tdls_peer_found)
2393                 ieee80211_teardown_tdls_peers(sdata);
2394
2395         return err;
2396 }
2397
2398 static int ieee80211_set_power_mgmt(struct wiphy *wiphy, struct net_device *dev,
2399                                     bool enabled, int timeout)
2400 {
2401         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2402         struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
2403
2404         if (sdata->vif.type != NL80211_IFTYPE_STATION)
2405                 return -EOPNOTSUPP;
2406
2407         if (!ieee80211_hw_check(&local->hw, SUPPORTS_PS))
2408                 return -EOPNOTSUPP;
2409
2410         if (enabled == sdata->u.mgd.powersave &&
2411             timeout == local->dynamic_ps_forced_timeout)
2412                 return 0;
2413
2414         sdata->u.mgd.powersave = enabled;
2415         local->dynamic_ps_forced_timeout = timeout;
2416
2417         /* no change, but if automatic follow powersave */
2418         sdata_lock(sdata);
2419         __ieee80211_request_smps_mgd(sdata, sdata->u.mgd.req_smps);
2420         sdata_unlock(sdata);
2421
2422         if (ieee80211_hw_check(&local->hw, SUPPORTS_DYNAMIC_PS))
2423                 ieee80211_hw_config(local, IEEE80211_CONF_CHANGE_PS);
2424
2425         ieee80211_recalc_ps(local);
2426         ieee80211_recalc_ps_vif(sdata);
2427
2428         return 0;
2429 }
2430
2431 static int ieee80211_set_cqm_rssi_config(struct wiphy *wiphy,
2432                                          struct net_device *dev,
2433                                          s32 rssi_thold, u32 rssi_hyst)
2434 {
2435         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2436         struct ieee80211_vif *vif = &sdata->vif;
2437         struct ieee80211_bss_conf *bss_conf = &vif->bss_conf;
2438
2439         if (rssi_thold == bss_conf->cqm_rssi_thold &&
2440             rssi_hyst == bss_conf->cqm_rssi_hyst)
2441                 return 0;
2442
2443         if (sdata->vif.driver_flags & IEEE80211_VIF_BEACON_FILTER &&
2444             !(sdata->vif.driver_flags & IEEE80211_VIF_SUPPORTS_CQM_RSSI))
2445                 return -EOPNOTSUPP;
2446
2447         bss_conf->cqm_rssi_thold = rssi_thold;
2448         bss_conf->cqm_rssi_hyst = rssi_hyst;
2449         sdata->u.mgd.last_cqm_event_signal = 0;
2450
2451         /* tell the driver upon association, unless already associated */
2452         if (sdata->u.mgd.associated &&
2453             sdata->vif.driver_flags & IEEE80211_VIF_SUPPORTS_CQM_RSSI)
2454                 ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_CQM);
2455
2456         return 0;
2457 }
2458
2459 static int ieee80211_set_bitrate_mask(struct wiphy *wiphy,
2460                                       struct net_device *dev,
2461                                       const u8 *addr,
2462                                       const struct cfg80211_bitrate_mask *mask)
2463 {
2464         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2465         struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
2466         int i, ret;
2467
2468         if (!ieee80211_sdata_running(sdata))
2469                 return -ENETDOWN;
2470
2471         if (ieee80211_hw_check(&local->hw, HAS_RATE_CONTROL)) {
2472                 ret = drv_set_bitrate_mask(local, sdata, mask);
2473                 if (ret)
2474                         return ret;
2475         }
2476
2477         for (i = 0; i < IEEE80211_NUM_BANDS; i++) {
2478                 struct ieee80211_supported_band *sband = wiphy->bands[i];
2479                 int j;
2480
2481                 sdata->rc_rateidx_mask[i] = mask->control[i].legacy;
2482                 memcpy(sdata->rc_rateidx_mcs_mask[i], mask->control[i].ht_mcs,
2483                        sizeof(mask->control[i].ht_mcs));
2484                 memcpy(sdata->rc_rateidx_vht_mcs_mask[i],
2485                        mask->control[i].vht_mcs,
2486                        sizeof(mask->control[i].vht_mcs));
2487
2488                 sdata->rc_has_mcs_mask[i] = false;
2489                 sdata->rc_has_vht_mcs_mask[i] = false;
2490                 if (!sband)
2491                         continue;
2492
2493                 for (j = 0; j < IEEE80211_HT_MCS_MASK_LEN; j++) {
2494                         if (~sdata->rc_rateidx_mcs_mask[i][j]) {
2495                                 sdata->rc_has_mcs_mask[i] = true;
2496                                 break;
2497                         }
2498                 }
2499
2500                 for (j = 0; j < NL80211_VHT_NSS_MAX; j++) {
2501                         if (~sdata->rc_rateidx_vht_mcs_mask[i][j]) {
2502                                 sdata->rc_has_vht_mcs_mask[i] = true;
2503                                 break;
2504                         }
2505                 }
2506         }
2507
2508         return 0;
2509 }
2510
2511 static bool ieee80211_coalesce_started_roc(struct ieee80211_local *local,
2512                                            struct ieee80211_roc_work *new_roc,
2513                                            struct ieee80211_roc_work *cur_roc)
2514 {
2515         unsigned long now = jiffies;
2516         unsigned long remaining = cur_roc->hw_start_time +
2517                                   msecs_to_jiffies(cur_roc->duration) -
2518                                   now;
2519
2520         if (WARN_ON(!cur_roc->started || !cur_roc->hw_begun))
2521                 return false;
2522
2523         /* if it doesn't fit entirely, schedule a new one */
2524         if (new_roc->duration > jiffies_to_msecs(remaining))
2525                 return false;
2526
2527         ieee80211_handle_roc_started(new_roc);
2528
2529         /* add to dependents so we send the expired event properly */
2530         list_add_tail(&new_roc->list, &cur_roc->dependents);
2531         return true;
2532 }
2533
2534 static u64 ieee80211_mgmt_tx_cookie(struct ieee80211_local *local)
2535 {
2536         lockdep_assert_held(&local->mtx);
2537
2538         local->roc_cookie_counter++;
2539
2540         /* wow, you wrapped 64 bits ... more likely a bug */
2541         if (WARN_ON(local->roc_cookie_counter == 0))
2542                 local->roc_cookie_counter++;
2543
2544         return local->roc_cookie_counter;
2545 }
2546
2547 static int ieee80211_start_roc_work(struct ieee80211_local *local,
2548                                     struct ieee80211_sub_if_data *sdata,
2549                                     struct ieee80211_channel *channel,
2550                                     unsigned int duration, u64 *cookie,
2551                                     struct sk_buff *txskb,
2552                                     enum ieee80211_roc_type type)
2553 {
2554         struct ieee80211_roc_work *roc, *tmp;
2555         bool queued = false;
2556         int ret;
2557
2558         lockdep_assert_held(&local->mtx);
2559
2560         if (local->use_chanctx && !local->ops->remain_on_channel)
2561                 return -EOPNOTSUPP;
2562
2563         roc = kzalloc(sizeof(*roc), GFP_KERNEL);
2564         if (!roc)
2565                 return -ENOMEM;
2566
2567         /*
2568          * If the duration is zero, then the driver
2569          * wouldn't actually do anything. Set it to
2570          * 10 for now.
2571          *
2572          * TODO: cancel the off-channel operation
2573          *       when we get the SKB's TX status and
2574          *       the wait time was zero before.
2575          */
2576         if (!duration)
2577                 duration = 10;
2578
2579         roc->chan = channel;
2580         roc->duration = duration;
2581         roc->req_duration = duration;
2582         roc->frame = txskb;
2583         roc->type = type;
2584         roc->sdata = sdata;
2585         INIT_DELAYED_WORK(&roc->work, ieee80211_sw_roc_work);
2586         INIT_LIST_HEAD(&roc->dependents);
2587
2588         /*
2589          * cookie is either the roc cookie (for normal roc)
2590          * or the SKB (for mgmt TX)
2591          */
2592         if (!txskb) {
2593                 roc->cookie = ieee80211_mgmt_tx_cookie(local);
2594                 *cookie = roc->cookie;
2595         } else {
2596                 roc->mgmt_tx_cookie = *cookie;
2597         }
2598
2599         /* if there's one pending or we're scanning, queue this one */
2600         if (!list_empty(&local->roc_list) ||
2601             local->scanning || ieee80211_is_radar_required(local))
2602                 goto out_check_combine;
2603
2604         /* if not HW assist, just queue & schedule work */
2605         if (!local->ops->remain_on_channel) {
2606                 ieee80211_queue_delayed_work(&local->hw, &roc->work, 0);
2607                 goto out_queue;
2608         }
2609
2610         /* otherwise actually kick it off here (for error handling) */
2611
2612         ret = drv_remain_on_channel(local, sdata, channel, duration, type);
2613         if (ret) {
2614                 kfree(roc);
2615                 return ret;
2616         }
2617
2618         roc->started = true;
2619         goto out_queue;
2620
2621  out_check_combine:
2622         list_for_each_entry(tmp, &local->roc_list, list) {
2623                 if (tmp->chan != channel || tmp->sdata != sdata)
2624                         continue;
2625
2626                 /*
2627                  * Extend this ROC if possible:
2628                  *
2629                  * If it hasn't started yet, just increase the duration
2630                  * and add the new one to the list of dependents.
2631                  * If the type of the new ROC has higher priority, modify the
2632                  * type of the previous one to match that of the new one.
2633                  */
2634                 if (!tmp->started) {
2635                         list_add_tail(&roc->list, &tmp->dependents);
2636                         tmp->duration = max(tmp->duration, roc->duration);
2637                         tmp->type = max(tmp->type, roc->type);
2638                         queued = true;
2639                         break;
2640                 }
2641
2642                 /* If it has already started, it's more difficult ... */
2643                 if (local->ops->remain_on_channel) {
2644                         /*
2645                          * In the offloaded ROC case, if it hasn't begun, add
2646                          * this new one to the dependent list to be handled
2647                          * when the master one begins. If it has begun,
2648                          * check if it fits entirely within the existing one,
2649                          * in which case it will just be dependent as well.
2650                          * Otherwise, schedule it by itself.
2651                          */
2652                         if (!tmp->hw_begun) {
2653                                 list_add_tail(&roc->list, &tmp->dependents);
2654                                 queued = true;
2655                                 break;
2656                         }
2657
2658                         if (ieee80211_coalesce_started_roc(local, roc, tmp))
2659                                 queued = true;
2660                 } else if (del_timer_sync(&tmp->work.timer)) {
2661                         unsigned long new_end;
2662
2663                         /*
2664                          * In the software ROC case, cancel the timer, if
2665                          * that fails then the finish work is already
2666                          * queued/pending and thus we queue the new ROC
2667                          * normally, if that succeeds then we can extend
2668                          * the timer duration and TX the frame (if any.)
2669                          */
2670
2671                         list_add_tail(&roc->list, &tmp->dependents);
2672                         queued = true;
2673
2674                         new_end = jiffies + msecs_to_jiffies(roc->duration);
2675
2676                         /* ok, it was started & we canceled timer */
2677                         if (time_after(new_end, tmp->work.timer.expires))
2678                                 mod_timer(&tmp->work.timer, new_end);
2679                         else
2680                                 add_timer(&tmp->work.timer);
2681
2682                         ieee80211_handle_roc_started(roc);
2683                 }
2684                 break;
2685         }
2686
2687  out_queue:
2688         if (!queued)
2689                 list_add_tail(&roc->list, &local->roc_list);
2690
2691         return 0;
2692 }
2693
2694 static int ieee80211_remain_on_channel(struct wiphy *wiphy,
2695                                        struct wireless_dev *wdev,
2696                                        struct ieee80211_channel *chan,
2697                                        unsigned int duration,
2698                                        u64 *cookie)
2699 {
2700         struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
2701         struct ieee80211_local *local = sdata->local;
2702         int ret;
2703
2704         mutex_lock(&local->mtx);
2705         ret = ieee80211_start_roc_work(local, sdata, chan,
2706                                        duration, cookie, NULL,
2707                                        IEEE80211_ROC_TYPE_NORMAL);
2708         mutex_unlock(&local->mtx);
2709
2710         return ret;
2711 }
2712
2713 static int ieee80211_cancel_roc(struct ieee80211_local *local,
2714                                 u64 cookie, bool mgmt_tx)
2715 {
2716         struct ieee80211_roc_work *roc, *tmp, *found = NULL;
2717         int ret;
2718
2719         mutex_lock(&local->mtx);
2720         list_for_each_entry_safe(roc, tmp, &local->roc_list, list) {
2721                 struct ieee80211_roc_work *dep, *tmp2;
2722
2723                 list_for_each_entry_safe(dep, tmp2, &roc->dependents, list) {
2724                         if (!mgmt_tx && dep->cookie != cookie)
2725                                 continue;
2726                         else if (mgmt_tx && dep->mgmt_tx_cookie != cookie)
2727                                 continue;
2728                         /* found dependent item -- just remove it */
2729                         list_del(&dep->list);
2730                         mutex_unlock(&local->mtx);
2731
2732                         ieee80211_roc_notify_destroy(dep, true);
2733                         return 0;
2734                 }
2735
2736                 if (!mgmt_tx && roc->cookie != cookie)
2737                         continue;
2738                 else if (mgmt_tx && roc->mgmt_tx_cookie != cookie)
2739                         continue;
2740
2741                 found = roc;
2742                 break;
2743         }
2744
2745         if (!found) {
2746                 mutex_unlock(&local->mtx);
2747                 return -ENOENT;
2748         }
2749
2750         /*
2751          * We found the item to cancel, so do that. Note that it
2752          * may have dependents, which we also cancel (and send
2753          * the expired signal for.) Not doing so would be quite
2754          * tricky here, but we may need to fix it later.
2755          */
2756
2757         if (local->ops->remain_on_channel) {
2758                 if (found->started) {
2759                         ret = drv_cancel_remain_on_channel(local);
2760                         if (WARN_ON_ONCE(ret)) {
2761                                 mutex_unlock(&local->mtx);
2762                                 return ret;
2763                         }
2764                 }
2765
2766                 list_del(&found->list);
2767
2768                 if (found->started)
2769                         ieee80211_start_next_roc(local);
2770                 mutex_unlock(&local->mtx);
2771
2772                 ieee80211_roc_notify_destroy(found, true);
2773         } else {
2774                 /* work may be pending so use it all the time */
2775                 found->abort = true;
2776                 ieee80211_queue_delayed_work(&local->hw, &found->work, 0);
2777
2778                 mutex_unlock(&local->mtx);
2779
2780                 /* work will clean up etc */
2781                 flush_delayed_work(&found->work);
2782                 WARN_ON(!found->to_be_freed);
2783                 kfree(found);
2784         }
2785
2786         return 0;
2787 }
2788
2789 static int ieee80211_cancel_remain_on_channel(struct wiphy *wiphy,
2790                                               struct wireless_dev *wdev,
2791                                               u64 cookie)
2792 {
2793         struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
2794         struct ieee80211_local *local = sdata->local;
2795
2796         return ieee80211_cancel_roc(local, cookie, false);
2797 }
2798
2799 static int ieee80211_start_radar_detection(struct wiphy *wiphy,
2800                                            struct net_device *dev,
2801                                            struct cfg80211_chan_def *chandef,
2802                                            u32 cac_time_ms)
2803 {
2804         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2805         struct ieee80211_local *local = sdata->local;
2806         int err;
2807
2808         mutex_lock(&local->mtx);
2809         if (!list_empty(&local->roc_list) || local->scanning) {
2810                 err = -EBUSY;
2811                 goto out_unlock;
2812         }
2813
2814         /* whatever, but channel contexts should not complain about that one */
2815         sdata->smps_mode = IEEE80211_SMPS_OFF;
2816         sdata->needed_rx_chains = local->rx_chains;
2817
2818         err = ieee80211_vif_use_channel(sdata, chandef,
2819                                         IEEE80211_CHANCTX_SHARED);
2820         if (err)
2821                 goto out_unlock;
2822
2823         ieee80211_queue_delayed_work(&sdata->local->hw,
2824                                      &sdata->dfs_cac_timer_work,
2825                                      msecs_to_jiffies(cac_time_ms));
2826
2827  out_unlock:
2828         mutex_unlock(&local->mtx);
2829         return err;
2830 }
2831
2832 static struct cfg80211_beacon_data *
2833 cfg80211_beacon_dup(struct cfg80211_beacon_data *beacon)
2834 {
2835         struct cfg80211_beacon_data *new_beacon;
2836         u8 *pos;
2837         int len;
2838
2839         len = beacon->head_len + beacon->tail_len + beacon->beacon_ies_len +
2840               beacon->proberesp_ies_len + beacon->assocresp_ies_len +
2841               beacon->probe_resp_len;
2842
2843         new_beacon = kzalloc(sizeof(*new_beacon) + len, GFP_KERNEL);
2844         if (!new_beacon)
2845                 return NULL;
2846
2847         pos = (u8 *)(new_beacon + 1);
2848         if (beacon->head_len) {
2849                 new_beacon->head_len = beacon->head_len;
2850                 new_beacon->head = pos;
2851                 memcpy(pos, beacon->head, beacon->head_len);
2852                 pos += beacon->head_len;
2853         }
2854         if (beacon->tail_len) {
2855                 new_beacon->tail_len = beacon->tail_len;
2856                 new_beacon->tail = pos;
2857                 memcpy(pos, beacon->tail, beacon->tail_len);
2858                 pos += beacon->tail_len;
2859         }
2860         if (beacon->beacon_ies_len) {
2861                 new_beacon->beacon_ies_len = beacon->beacon_ies_len;
2862                 new_beacon->beacon_ies = pos;
2863                 memcpy(pos, beacon->beacon_ies, beacon->beacon_ies_len);
2864                 pos += beacon->beacon_ies_len;
2865         }
2866         if (beacon->proberesp_ies_len) {
2867                 new_beacon->proberesp_ies_len = beacon->proberesp_ies_len;
2868                 new_beacon->proberesp_ies = pos;
2869                 memcpy(pos, beacon->proberesp_ies, beacon->proberesp_ies_len);
2870                 pos += beacon->proberesp_ies_len;
2871         }
2872         if (beacon->assocresp_ies_len) {
2873                 new_beacon->assocresp_ies_len = beacon->assocresp_ies_len;
2874                 new_beacon->assocresp_ies = pos;
2875                 memcpy(pos, beacon->assocresp_ies, beacon->assocresp_ies_len);
2876                 pos += beacon->assocresp_ies_len;
2877         }
2878         if (beacon->probe_resp_len) {
2879                 new_beacon->probe_resp_len = beacon->probe_resp_len;
2880                 beacon->probe_resp = pos;
2881                 memcpy(pos, beacon->probe_resp, beacon->probe_resp_len);
2882                 pos += beacon->probe_resp_len;
2883         }
2884
2885         return new_beacon;
2886 }
2887
2888 void ieee80211_csa_finish(struct ieee80211_vif *vif)
2889 {
2890         struct ieee80211_sub_if_data *sdata = vif_to_sdata(vif);
2891
2892         ieee80211_queue_work(&sdata->local->hw,
2893                              &sdata->csa_finalize_work);
2894 }
2895 EXPORT_SYMBOL(ieee80211_csa_finish);
2896
2897 static int ieee80211_set_after_csa_beacon(struct ieee80211_sub_if_data *sdata,
2898                                           u32 *changed)
2899 {
2900         int err;
2901
2902         switch (sdata->vif.type) {
2903         case NL80211_IFTYPE_AP:
2904                 err = ieee80211_assign_beacon(sdata, sdata->u.ap.next_beacon,
2905                                               NULL);
2906                 kfree(sdata->u.ap.next_beacon);
2907                 sdata->u.ap.next_beacon = NULL;
2908
2909                 if (err < 0)
2910                         return err;
2911                 *changed |= err;
2912                 break;
2913         case NL80211_IFTYPE_ADHOC:
2914                 err = ieee80211_ibss_finish_csa(sdata);
2915                 if (err < 0)
2916                         return err;
2917                 *changed |= err;
2918                 break;
2919 #ifdef CONFIG_MAC80211_MESH
2920         case NL80211_IFTYPE_MESH_POINT:
2921                 err = ieee80211_mesh_finish_csa(sdata);
2922                 if (err < 0)
2923                         return err;
2924                 *changed |= err;
2925                 break;
2926 #endif
2927         default:
2928                 WARN_ON(1);
2929                 return -EINVAL;
2930         }
2931
2932         return 0;
2933 }
2934
2935 static int __ieee80211_csa_finalize(struct ieee80211_sub_if_data *sdata)
2936 {
2937         struct ieee80211_local *local = sdata->local;
2938         u32 changed = 0;
2939         int err;
2940
2941         sdata_assert_lock(sdata);
2942         lockdep_assert_held(&local->mtx);
2943         lockdep_assert_held(&local->chanctx_mtx);
2944
2945         /*
2946          * using reservation isn't immediate as it may be deferred until later
2947          * with multi-vif. once reservation is complete it will re-schedule the
2948          * work with no reserved_chanctx so verify chandef to check if it
2949          * completed successfully
2950          */
2951
2952         if (sdata->reserved_chanctx) {
2953                 /*
2954                  * with multi-vif csa driver may call ieee80211_csa_finish()
2955                  * many times while waiting for other interfaces to use their
2956                  * reservations
2957                  */
2958                 if (sdata->reserved_ready)
2959                         return 0;
2960
2961                 return ieee80211_vif_use_reserved_context(sdata);
2962         }
2963
2964         if (!cfg80211_chandef_identical(&sdata->vif.bss_conf.chandef,
2965                                         &sdata->csa_chandef))
2966                 return -EINVAL;
2967
2968         sdata->vif.csa_active = false;
2969
2970         err = ieee80211_set_after_csa_beacon(sdata, &changed);
2971         if (err)
2972                 return err;
2973
2974         ieee80211_bss_info_change_notify(sdata, changed);
2975
2976         if (sdata->csa_block_tx) {
2977                 ieee80211_wake_vif_queues(local, sdata,
2978                                           IEEE80211_QUEUE_STOP_REASON_CSA);
2979                 sdata->csa_block_tx = false;
2980         }
2981
2982         err = drv_post_channel_switch(sdata);
2983         if (err)
2984                 return err;
2985
2986         cfg80211_ch_switch_notify(sdata->dev, &sdata->csa_chandef);
2987
2988         return 0;
2989 }
2990
2991 static void ieee80211_csa_finalize(struct ieee80211_sub_if_data *sdata)
2992 {
2993         if (__ieee80211_csa_finalize(sdata)) {
2994                 sdata_info(sdata, "failed to finalize CSA, disconnecting\n");
2995                 cfg80211_stop_iface(sdata->local->hw.wiphy, &sdata->wdev,
2996                                     GFP_KERNEL);
2997         }
2998 }
2999
3000 void ieee80211_csa_finalize_work(struct work_struct *work)
3001 {
3002         struct ieee80211_sub_if_data *sdata =
3003                 container_of(work, struct ieee80211_sub_if_data,
3004                              csa_finalize_work);
3005         struct ieee80211_local *local = sdata->local;
3006
3007         sdata_lock(sdata);
3008         mutex_lock(&local->mtx);
3009         mutex_lock(&local->chanctx_mtx);
3010
3011         /* AP might have been stopped while waiting for the lock. */
3012         if (!sdata->vif.csa_active)
3013                 goto unlock;
3014
3015         if (!ieee80211_sdata_running(sdata))
3016                 goto unlock;
3017
3018         ieee80211_csa_finalize(sdata);
3019
3020 unlock:
3021         mutex_unlock(&local->chanctx_mtx);
3022         mutex_unlock(&local->mtx);
3023         sdata_unlock(sdata);
3024 }
3025
3026 static int ieee80211_set_csa_beacon(struct ieee80211_sub_if_data *sdata,
3027                                     struct cfg80211_csa_settings *params,
3028                                     u32 *changed)
3029 {
3030         struct ieee80211_csa_settings csa = {};
3031         int err;
3032
3033         switch (sdata->vif.type) {
3034         case NL80211_IFTYPE_AP:
3035                 sdata->u.ap.next_beacon =
3036                         cfg80211_beacon_dup(&params->beacon_after);
3037                 if (!sdata->u.ap.next_beacon)
3038                         return -ENOMEM;
3039
3040                 /*
3041                  * With a count of 0, we don't have to wait for any
3042                  * TBTT before switching, so complete the CSA
3043                  * immediately.  In theory, with a count == 1 we
3044                  * should delay the switch until just before the next
3045                  * TBTT, but that would complicate things so we switch
3046                  * immediately too.  If we would delay the switch
3047                  * until the next TBTT, we would have to set the probe
3048                  * response here.
3049                  *
3050                  * TODO: A channel switch with count <= 1 without
3051                  * sending a CSA action frame is kind of useless,
3052                  * because the clients won't know we're changing
3053                  * channels.  The action frame must be implemented
3054                  * either here or in the userspace.
3055                  */
3056                 if (params->count <= 1)
3057                         break;
3058
3059                 if ((params->n_counter_offsets_beacon >
3060                      IEEE80211_MAX_CSA_COUNTERS_NUM) ||
3061                     (params->n_counter_offsets_presp >
3062                      IEEE80211_MAX_CSA_COUNTERS_NUM))
3063                         return -EINVAL;
3064
3065                 csa.counter_offsets_beacon = params->counter_offsets_beacon;
3066                 csa.counter_offsets_presp = params->counter_offsets_presp;
3067                 csa.n_counter_offsets_beacon = params->n_counter_offsets_beacon;
3068                 csa.n_counter_offsets_presp = params->n_counter_offsets_presp;
3069                 csa.count = params->count;
3070
3071                 err = ieee80211_assign_beacon(sdata, &params->beacon_csa, &csa);
3072                 if (err < 0) {
3073                         kfree(sdata->u.ap.next_beacon);
3074                         return err;
3075                 }
3076                 *changed |= err;
3077
3078                 break;
3079         case NL80211_IFTYPE_ADHOC:
3080                 if (!sdata->vif.bss_conf.ibss_joined)
3081                         return -EINVAL;
3082
3083                 if (params->chandef.width != sdata->u.ibss.chandef.width)
3084                         return -EINVAL;
3085
3086                 switch (params->chandef.width) {
3087                 case NL80211_CHAN_WIDTH_40:
3088                         if (cfg80211_get_chandef_type(&params->chandef) !=
3089                             cfg80211_get_chandef_type(&sdata->u.ibss.chandef))
3090                                 return -EINVAL;
3091                 case NL80211_CHAN_WIDTH_5:
3092                 case NL80211_CHAN_WIDTH_10:
3093                 case NL80211_CHAN_WIDTH_20_NOHT:
3094                 case NL80211_CHAN_WIDTH_20:
3095                         break;
3096                 default:
3097                         return -EINVAL;
3098                 }
3099
3100                 /* changes into another band are not supported */
3101                 if (sdata->u.ibss.chandef.chan->band !=
3102                     params->chandef.chan->band)
3103                         return -EINVAL;
3104
3105                 /* see comments in the NL80211_IFTYPE_AP block */
3106                 if (params->count > 1) {
3107                         err = ieee80211_ibss_csa_beacon(sdata, params);
3108                         if (err < 0)
3109                                 return err;
3110                         *changed |= err;
3111                 }
3112
3113                 ieee80211_send_action_csa(sdata, params);
3114
3115                 break;
3116 #ifdef CONFIG_MAC80211_MESH
3117         case NL80211_IFTYPE_MESH_POINT: {
3118                 struct ieee80211_if_mesh *ifmsh = &sdata->u.mesh;
3119
3120                 if (params->chandef.width != sdata->vif.bss_conf.chandef.width)
3121                         return -EINVAL;
3122
3123                 /* changes into another band are not supported */
3124                 if (sdata->vif.bss_conf.chandef.chan->band !=
3125                     params->chandef.chan->band)
3126                         return -EINVAL;
3127
3128                 if (ifmsh->csa_role == IEEE80211_MESH_CSA_ROLE_NONE) {
3129                         ifmsh->csa_role = IEEE80211_MESH_CSA_ROLE_INIT;
3130                         if (!ifmsh->pre_value)
3131                                 ifmsh->pre_value = 1;
3132                         else
3133                                 ifmsh->pre_value++;
3134                 }
3135
3136                 /* see comments in the NL80211_IFTYPE_AP block */
3137                 if (params->count > 1) {
3138                         err = ieee80211_mesh_csa_beacon(sdata, params);
3139                         if (err < 0) {
3140                                 ifmsh->csa_role = IEEE80211_MESH_CSA_ROLE_NONE;
3141                                 return err;
3142                         }
3143                         *changed |= err;
3144                 }
3145
3146                 if (ifmsh->csa_role == IEEE80211_MESH_CSA_ROLE_INIT)
3147                         ieee80211_send_action_csa(sdata, params);
3148
3149                 break;
3150                 }
3151 #endif
3152         default:
3153                 return -EOPNOTSUPP;
3154         }
3155
3156         return 0;
3157 }
3158
3159 static int
3160 __ieee80211_channel_switch(struct wiphy *wiphy, struct net_device *dev,
3161                            struct cfg80211_csa_settings *params)
3162 {
3163         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
3164         struct ieee80211_local *local = sdata->local;
3165         struct ieee80211_channel_switch ch_switch;
3166         struct ieee80211_chanctx_conf *conf;
3167         struct ieee80211_chanctx *chanctx;
3168         u32 changed = 0;
3169         int err;
3170
3171         sdata_assert_lock(sdata);
3172         lockdep_assert_held(&local->mtx);
3173
3174         if (!list_empty(&local->roc_list) || local->scanning)
3175                 return -EBUSY;
3176
3177         if (sdata->wdev.cac_started)
3178                 return -EBUSY;
3179
3180         if (cfg80211_chandef_identical(&params->chandef,
3181                                        &sdata->vif.bss_conf.chandef))
3182                 return -EINVAL;
3183
3184         /* don't allow another channel switch if one is already active. */
3185         if (sdata->vif.csa_active)
3186                 return -EBUSY;
3187
3188         mutex_lock(&local->chanctx_mtx);
3189         conf = rcu_dereference_protected(sdata->vif.chanctx_conf,
3190                                          lockdep_is_held(&local->chanctx_mtx));
3191         if (!conf) {
3192                 err = -EBUSY;
3193                 goto out;
3194         }
3195
3196         chanctx = container_of(conf, struct ieee80211_chanctx, conf);
3197         if (!chanctx) {
3198                 err = -EBUSY;
3199                 goto out;
3200         }
3201
3202         ch_switch.timestamp = 0;
3203         ch_switch.device_timestamp = 0;
3204         ch_switch.block_tx = params->block_tx;
3205         ch_switch.chandef = params->chandef;
3206         ch_switch.count = params->count;
3207
3208         err = drv_pre_channel_switch(sdata, &ch_switch);
3209         if (err)
3210                 goto out;
3211
3212         err = ieee80211_vif_reserve_chanctx(sdata, &params->chandef,
3213                                             chanctx->mode,
3214                                             params->radar_required);
3215         if (err)
3216                 goto out;
3217
3218         /* if reservation is invalid then this will fail */
3219         err = ieee80211_check_combinations(sdata, NULL, chanctx->mode, 0);
3220         if (err) {
3221                 ieee80211_vif_unreserve_chanctx(sdata);
3222                 goto out;
3223         }
3224
3225         err = ieee80211_set_csa_beacon(sdata, params, &changed);
3226         if (err) {
3227                 ieee80211_vif_unreserve_chanctx(sdata);
3228                 goto out;
3229         }
3230
3231         sdata->csa_chandef = params->chandef;
3232         sdata->csa_block_tx = params->block_tx;
3233         sdata->vif.csa_active = true;
3234
3235         if (sdata->csa_block_tx)
3236                 ieee80211_stop_vif_queues(local, sdata,
3237                                           IEEE80211_QUEUE_STOP_REASON_CSA);
3238
3239         cfg80211_ch_switch_started_notify(sdata->dev, &sdata->csa_chandef,
3240                                           params->count);
3241
3242         if (changed) {
3243                 ieee80211_bss_info_change_notify(sdata, changed);
3244                 drv_channel_switch_beacon(sdata, &params->chandef);
3245         } else {
3246                 /* if the beacon didn't change, we can finalize immediately */
3247                 ieee80211_csa_finalize(sdata);
3248         }
3249
3250 out:
3251         mutex_unlock(&local->chanctx_mtx);
3252         return err;
3253 }
3254
3255 int ieee80211_channel_switch(struct wiphy *wiphy, struct net_device *dev,
3256                              struct cfg80211_csa_settings *params)
3257 {
3258         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
3259         struct ieee80211_local *local = sdata->local;
3260         int err;
3261
3262         mutex_lock(&local->mtx);
3263         err = __ieee80211_channel_switch(wiphy, dev, params);
3264         mutex_unlock(&local->mtx);
3265
3266         return err;
3267 }
3268
3269 static struct sk_buff *ieee80211_make_ack_skb(struct ieee80211_local *local,
3270                                               struct sk_buff *skb, u64 *cookie,
3271                                               gfp_t gfp)
3272 {
3273         unsigned long spin_flags;
3274         struct sk_buff *ack_skb;
3275         int id;
3276
3277         ack_skb = skb_copy(skb, gfp);
3278         if (!ack_skb)
3279                 return ERR_PTR(-ENOMEM);
3280
3281         spin_lock_irqsave(&local->ack_status_lock, spin_flags);
3282         id = idr_alloc(&local->ack_status_frames, ack_skb,
3283                        1, 0x10000, GFP_ATOMIC);
3284         spin_unlock_irqrestore(&local->ack_status_lock, spin_flags);
3285
3286         if (id < 0) {
3287                 kfree_skb(ack_skb);
3288                 return ERR_PTR(-ENOMEM);
3289         }
3290
3291         IEEE80211_SKB_CB(skb)->ack_frame_id = id;
3292
3293         *cookie = ieee80211_mgmt_tx_cookie(local);
3294         IEEE80211_SKB_CB(ack_skb)->ack.cookie = *cookie;
3295
3296         return ack_skb;
3297 }
3298
3299 static int ieee80211_mgmt_tx(struct wiphy *wiphy, struct wireless_dev *wdev,
3300                              struct cfg80211_mgmt_tx_params *params,
3301                              u64 *cookie)
3302 {
3303         struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
3304         struct ieee80211_local *local = sdata->local;
3305         struct sk_buff *skb, *ack_skb;
3306         struct sta_info *sta;
3307         const struct ieee80211_mgmt *mgmt = (void *)params->buf;
3308         bool need_offchan = false;
3309         u32 flags;
3310         int ret;
3311         u8 *data;
3312
3313         if (params->dont_wait_for_ack)
3314                 flags = IEEE80211_TX_CTL_NO_ACK;
3315         else
3316                 flags = IEEE80211_TX_INTFL_NL80211_FRAME_TX |
3317                         IEEE80211_TX_CTL_REQ_TX_STATUS;
3318
3319         if (params->no_cck)
3320                 flags |= IEEE80211_TX_CTL_NO_CCK_RATE;
3321
3322         switch (sdata->vif.type) {
3323         case NL80211_IFTYPE_ADHOC:
3324                 if (!sdata->vif.bss_conf.ibss_joined)
3325                         need_offchan = true;
3326                 /* fall through */
3327 #ifdef CONFIG_MAC80211_MESH
3328         case NL80211_IFTYPE_MESH_POINT:
3329                 if (ieee80211_vif_is_mesh(&sdata->vif) &&
3330                     !sdata->u.mesh.mesh_id_len)
3331                         need_offchan = true;
3332                 /* fall through */
3333 #endif
3334         case NL80211_IFTYPE_AP:
3335         case NL80211_IFTYPE_AP_VLAN:
3336         case NL80211_IFTYPE_P2P_GO:
3337                 if (sdata->vif.type != NL80211_IFTYPE_ADHOC &&
3338                     !ieee80211_vif_is_mesh(&sdata->vif) &&
3339                     !rcu_access_pointer(sdata->bss->beacon))
3340                         need_offchan = true;
3341                 if (!ieee80211_is_action(mgmt->frame_control) ||
3342                     mgmt->u.action.category == WLAN_CATEGORY_PUBLIC ||
3343                     mgmt->u.action.category == WLAN_CATEGORY_SELF_PROTECTED ||
3344                     mgmt->u.action.category == WLAN_CATEGORY_SPECTRUM_MGMT)
3345                         break;
3346                 rcu_read_lock();
3347                 sta = sta_info_get(sdata, mgmt->da);
3348                 rcu_read_unlock();
3349                 if (!sta)
3350                         return -ENOLINK;
3351                 break;
3352         case NL80211_IFTYPE_STATION:
3353         case NL80211_IFTYPE_P2P_CLIENT:
3354                 sdata_lock(sdata);
3355                 if (!sdata->u.mgd.associated ||
3356                     (params->offchan && params->wait &&
3357                      local->ops->remain_on_channel &&
3358                      memcmp(sdata->u.mgd.associated->bssid,
3359                             mgmt->bssid, ETH_ALEN)))
3360                         need_offchan = true;
3361                 sdata_unlock(sdata);
3362                 break;
3363         case NL80211_IFTYPE_P2P_DEVICE:
3364                 need_offchan = true;
3365                 break;
3366         default:
3367                 return -EOPNOTSUPP;
3368         }
3369
3370         /* configurations requiring offchan cannot work if no channel has been
3371          * specified
3372          */
3373         if (need_offchan && !params->chan)
3374                 return -EINVAL;
3375
3376         mutex_lock(&local->mtx);
3377
3378         /* Check if the operating channel is the requested channel */
3379         if (!need_offchan) {
3380                 struct ieee80211_chanctx_conf *chanctx_conf;
3381
3382                 rcu_read_lock();
3383                 chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf);
3384
3385                 if (chanctx_conf) {
3386                         need_offchan = params->chan &&
3387                                        (params->chan !=
3388                                         chanctx_conf->def.chan);
3389                 } else if (!params->chan) {
3390                         ret = -EINVAL;
3391                         rcu_read_unlock();
3392                         goto out_unlock;
3393                 } else {
3394                         need_offchan = true;
3395                 }
3396                 rcu_read_unlock();
3397         }
3398
3399         if (need_offchan && !params->offchan) {
3400                 ret = -EBUSY;
3401                 goto out_unlock;
3402         }
3403
3404         skb = dev_alloc_skb(local->hw.extra_tx_headroom + params->len);
3405         if (!skb) {
3406                 ret = -ENOMEM;
3407                 goto out_unlock;
3408         }
3409         skb_reserve(skb, local->hw.extra_tx_headroom);
3410
3411         data = skb_put(skb, params->len);
3412         memcpy(data, params->buf, params->len);
3413
3414         /* Update CSA counters */
3415         if (sdata->vif.csa_active &&
3416             (sdata->vif.type == NL80211_IFTYPE_AP ||
3417              sdata->vif.type == NL80211_IFTYPE_MESH_POINT ||
3418              sdata->vif.type == NL80211_IFTYPE_ADHOC) &&
3419             params->n_csa_offsets) {
3420                 int i;
3421                 struct beacon_data *beacon = NULL;
3422
3423                 rcu_read_lock();
3424
3425                 if (sdata->vif.type == NL80211_IFTYPE_AP)
3426                         beacon = rcu_dereference(sdata->u.ap.beacon);
3427                 else if (sdata->vif.type == NL80211_IFTYPE_ADHOC)
3428                         beacon = rcu_dereference(sdata->u.ibss.presp);
3429                 else if (ieee80211_vif_is_mesh(&sdata->vif))
3430                         beacon = rcu_dereference(sdata->u.mesh.beacon);
3431
3432                 if (beacon)
3433                         for (i = 0; i < params->n_csa_offsets; i++)
3434                                 data[params->csa_offsets[i]] =
3435                                         beacon->csa_current_counter;
3436
3437                 rcu_read_unlock();
3438         }
3439
3440         IEEE80211_SKB_CB(skb)->flags = flags;
3441
3442         skb->dev = sdata->dev;
3443
3444         if (!params->dont_wait_for_ack) {
3445                 /* make a copy to preserve the frame contents
3446                  * in case of encryption.
3447                  */
3448                 ack_skb = ieee80211_make_ack_skb(local, skb, cookie,
3449                                                  GFP_KERNEL);
3450                 if (IS_ERR(ack_skb)) {
3451                         ret = PTR_ERR(ack_skb);
3452                         kfree_skb(skb);
3453                         goto out_unlock;
3454                 }
3455         } else {
3456                 /* Assign a dummy non-zero cookie, it's not sent to
3457                  * userspace in this case but we rely on its value
3458                  * internally in the need_offchan case to distinguish
3459                  * mgmt-tx from remain-on-channel.
3460                  */
3461                 *cookie = 0xffffffff;
3462         }
3463
3464         if (!need_offchan) {
3465                 ieee80211_tx_skb(sdata, skb);
3466                 ret = 0;
3467                 goto out_unlock;
3468         }
3469
3470         IEEE80211_SKB_CB(skb)->flags |= IEEE80211_TX_CTL_TX_OFFCHAN |
3471                                         IEEE80211_TX_INTFL_OFFCHAN_TX_OK;
3472         if (ieee80211_hw_check(&local->hw, QUEUE_CONTROL))
3473                 IEEE80211_SKB_CB(skb)->hw_queue =
3474                         local->hw.offchannel_tx_hw_queue;
3475
3476         /* This will handle all kinds of coalescing and immediate TX */
3477         ret = ieee80211_start_roc_work(local, sdata, params->chan,
3478                                        params->wait, cookie, skb,
3479                                        IEEE80211_ROC_TYPE_MGMT_TX);
3480         if (ret)
3481                 kfree_skb(skb);
3482  out_unlock:
3483         mutex_unlock(&local->mtx);
3484         return ret;
3485 }
3486
3487 static int ieee80211_mgmt_tx_cancel_wait(struct wiphy *wiphy,
3488                                          struct wireless_dev *wdev,
3489                                          u64 cookie)
3490 {
3491         struct ieee80211_local *local = wiphy_priv(wiphy);
3492
3493         return ieee80211_cancel_roc(local, cookie, true);
3494 }
3495
3496 static void ieee80211_mgmt_frame_register(struct wiphy *wiphy,
3497                                           struct wireless_dev *wdev,
3498                                           u16 frame_type, bool reg)
3499 {
3500         struct ieee80211_local *local = wiphy_priv(wiphy);
3501         struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
3502
3503         switch (frame_type) {
3504         case IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_PROBE_REQ:
3505                 if (reg) {
3506                         local->probe_req_reg++;
3507                         sdata->vif.probe_req_reg++;
3508                 } else {
3509                         if (local->probe_req_reg)
3510                                 local->probe_req_reg--;
3511
3512                         if (sdata->vif.probe_req_reg)
3513                                 sdata->vif.probe_req_reg--;
3514                 }
3515
3516                 if (!local->open_count)
3517                         break;
3518
3519                 if (sdata->vif.probe_req_reg == 1)
3520                         drv_config_iface_filter(local, sdata, FIF_PROBE_REQ,
3521                                                 FIF_PROBE_REQ);
3522                 else if (sdata->vif.probe_req_reg == 0)
3523                         drv_config_iface_filter(local, sdata, 0,
3524                                                 FIF_PROBE_REQ);
3525
3526                 ieee80211_configure_filter(local);
3527                 break;
3528         default:
3529                 break;
3530         }
3531 }
3532
3533 static int ieee80211_set_antenna(struct wiphy *wiphy, u32 tx_ant, u32 rx_ant)
3534 {
3535         struct ieee80211_local *local = wiphy_priv(wiphy);
3536
3537         if (local->started)
3538                 return -EOPNOTSUPP;
3539
3540         return drv_set_antenna(local, tx_ant, rx_ant);
3541 }
3542
3543 static int ieee80211_get_antenna(struct wiphy *wiphy, u32 *tx_ant, u32 *rx_ant)
3544 {
3545         struct ieee80211_local *local = wiphy_priv(wiphy);
3546
3547         return drv_get_antenna(local, tx_ant, rx_ant);
3548 }
3549
3550 static int ieee80211_set_rekey_data(struct wiphy *wiphy,
3551                                     struct net_device *dev,
3552                                     struct cfg80211_gtk_rekey_data *data)
3553 {
3554         struct ieee80211_local *local = wiphy_priv(wiphy);
3555         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
3556
3557         if (!local->ops->set_rekey_data)
3558                 return -EOPNOTSUPP;
3559
3560         drv_set_rekey_data(local, sdata, data);
3561
3562         return 0;
3563 }
3564
3565 static int ieee80211_probe_client(struct wiphy *wiphy, struct net_device *dev,
3566                                   const u8 *peer, u64 *cookie)
3567 {
3568         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
3569         struct ieee80211_local *local = sdata->local;
3570         struct ieee80211_qos_hdr *nullfunc;
3571         struct sk_buff *skb, *ack_skb;
3572         int size = sizeof(*nullfunc);
3573         __le16 fc;
3574         bool qos;
3575         struct ieee80211_tx_info *info;
3576         struct sta_info *sta;
3577         struct ieee80211_chanctx_conf *chanctx_conf;
3578         enum ieee80211_band band;
3579         int ret;
3580
3581         /* the lock is needed to assign the cookie later */
3582         mutex_lock(&local->mtx);
3583
3584         rcu_read_lock();
3585         chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf);
3586         if (WARN_ON(!chanctx_conf)) {
3587                 ret = -EINVAL;
3588                 goto unlock;
3589         }
3590         band = chanctx_conf->def.chan->band;
3591         sta = sta_info_get_bss(sdata, peer);
3592         if (sta) {
3593                 qos = sta->sta.wme;
3594         } else {
3595                 ret = -ENOLINK;
3596                 goto unlock;
3597         }
3598
3599         if (qos) {
3600                 fc = cpu_to_le16(IEEE80211_FTYPE_DATA |
3601                                  IEEE80211_STYPE_QOS_NULLFUNC |
3602                                  IEEE80211_FCTL_FROMDS);
3603         } else {
3604                 size -= 2;
3605                 fc = cpu_to_le16(IEEE80211_FTYPE_DATA |
3606                                  IEEE80211_STYPE_NULLFUNC |
3607                                  IEEE80211_FCTL_FROMDS);
3608         }
3609
3610         skb = dev_alloc_skb(local->hw.extra_tx_headroom + size);
3611         if (!skb) {
3612                 ret = -ENOMEM;
3613                 goto unlock;
3614         }
3615
3616         skb->dev = dev;
3617
3618         skb_reserve(skb, local->hw.extra_tx_headroom);
3619
3620         nullfunc = (void *) skb_put(skb, size);
3621         nullfunc->frame_control = fc;
3622         nullfunc->duration_id = 0;
3623         memcpy(nullfunc->addr1, sta->sta.addr, ETH_ALEN);
3624         memcpy(nullfunc->addr2, sdata->vif.addr, ETH_ALEN);
3625         memcpy(nullfunc->addr3, sdata->vif.addr, ETH_ALEN);
3626         nullfunc->seq_ctrl = 0;
3627
3628         info = IEEE80211_SKB_CB(skb);
3629
3630         info->flags |= IEEE80211_TX_CTL_REQ_TX_STATUS |
3631                        IEEE80211_TX_INTFL_NL80211_FRAME_TX;
3632         info->band = band;
3633
3634         skb_set_queue_mapping(skb, IEEE80211_AC_VO);
3635         skb->priority = 7;
3636         if (qos)
3637                 nullfunc->qos_ctrl = cpu_to_le16(7);
3638
3639         ack_skb = ieee80211_make_ack_skb(local, skb, cookie, GFP_ATOMIC);
3640         if (IS_ERR(ack_skb)) {
3641                 kfree_skb(skb);
3642                 ret = PTR_ERR(ack_skb);
3643                 goto unlock;
3644         }
3645
3646         local_bh_disable();
3647         ieee80211_xmit(sdata, sta, skb);
3648         local_bh_enable();
3649
3650         ret = 0;
3651 unlock:
3652         rcu_read_unlock();
3653         mutex_unlock(&local->mtx);
3654
3655         return ret;
3656 }
3657
3658 static int ieee80211_cfg_get_channel(struct wiphy *wiphy,
3659                                      struct wireless_dev *wdev,
3660                                      struct cfg80211_chan_def *chandef)
3661 {
3662         struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
3663         struct ieee80211_local *local = wiphy_priv(wiphy);
3664         struct ieee80211_chanctx_conf *chanctx_conf;
3665         int ret = -ENODATA;
3666
3667         rcu_read_lock();
3668         chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf);
3669         if (chanctx_conf) {
3670                 *chandef = sdata->vif.bss_conf.chandef;
3671                 ret = 0;
3672         } else if (local->open_count > 0 &&
3673                    local->open_count == local->monitors &&
3674                    sdata->vif.type == NL80211_IFTYPE_MONITOR) {
3675                 if (local->use_chanctx)
3676                         *chandef = local->monitor_chandef;
3677                 else
3678                         *chandef = local->_oper_chandef;
3679                 ret = 0;
3680         }
3681         rcu_read_unlock();
3682
3683         return ret;
3684 }
3685
3686 #ifdef CONFIG_PM
3687 static void ieee80211_set_wakeup(struct wiphy *wiphy, bool enabled)
3688 {
3689         drv_set_wakeup(wiphy_priv(wiphy), enabled);
3690 }
3691 #endif
3692
3693 static int ieee80211_set_qos_map(struct wiphy *wiphy,
3694                                  struct net_device *dev,
3695                                  struct cfg80211_qos_map *qos_map)
3696 {
3697         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
3698         struct mac80211_qos_map *new_qos_map, *old_qos_map;
3699
3700         if (qos_map) {
3701                 new_qos_map = kzalloc(sizeof(*new_qos_map), GFP_KERNEL);
3702                 if (!new_qos_map)
3703                         return -ENOMEM;
3704                 memcpy(&new_qos_map->qos_map, qos_map, sizeof(*qos_map));
3705         } else {
3706                 /* A NULL qos_map was passed to disable QoS mapping */
3707                 new_qos_map = NULL;
3708         }
3709
3710         old_qos_map = sdata_dereference(sdata->qos_map, sdata);
3711         rcu_assign_pointer(sdata->qos_map, new_qos_map);
3712         if (old_qos_map)
3713                 kfree_rcu(old_qos_map, rcu_head);
3714
3715         return 0;
3716 }
3717
3718 static int ieee80211_set_ap_chanwidth(struct wiphy *wiphy,
3719                                       struct net_device *dev,
3720                                       struct cfg80211_chan_def *chandef)
3721 {
3722         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
3723         int ret;
3724         u32 changed = 0;
3725
3726         ret = ieee80211_vif_change_bandwidth(sdata, chandef, &changed);
3727         if (ret == 0)
3728                 ieee80211_bss_info_change_notify(sdata, changed);
3729
3730         return ret;
3731 }
3732
3733 static int ieee80211_add_tx_ts(struct wiphy *wiphy, struct net_device *dev,
3734                                u8 tsid, const u8 *peer, u8 up,
3735                                u16 admitted_time)
3736 {
3737         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
3738         struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
3739         int ac = ieee802_1d_to_ac[up];
3740
3741         if (sdata->vif.type != NL80211_IFTYPE_STATION)
3742                 return -EOPNOTSUPP;
3743
3744         if (!(sdata->wmm_acm & BIT(up)))
3745                 return -EINVAL;
3746
3747         if (ifmgd->tx_tspec[ac].admitted_time)
3748                 return -EBUSY;
3749
3750         if (admitted_time) {
3751                 ifmgd->tx_tspec[ac].admitted_time = 32 * admitted_time;
3752                 ifmgd->tx_tspec[ac].tsid = tsid;
3753                 ifmgd->tx_tspec[ac].up = up;
3754         }
3755
3756         return 0;
3757 }
3758
3759 static int ieee80211_del_tx_ts(struct wiphy *wiphy, struct net_device *dev,
3760                                u8 tsid, const u8 *peer)
3761 {
3762         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
3763         struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
3764         struct ieee80211_local *local = wiphy_priv(wiphy);
3765         int ac;
3766
3767         for (ac = 0; ac < IEEE80211_NUM_ACS; ac++) {
3768                 struct ieee80211_sta_tx_tspec *tx_tspec = &ifmgd->tx_tspec[ac];
3769
3770                 /* skip unused entries */
3771                 if (!tx_tspec->admitted_time)
3772                         continue;
3773
3774                 if (tx_tspec->tsid != tsid)
3775                         continue;
3776
3777                 /* due to this new packets will be reassigned to non-ACM ACs */
3778                 tx_tspec->up = -1;
3779
3780                 /* Make sure that all packets have been sent to avoid to
3781                  * restore the QoS params on packets that are still on the
3782                  * queues.
3783                  */
3784                 synchronize_net();
3785                 ieee80211_flush_queues(local, sdata, false);
3786
3787                 /* restore the normal QoS parameters
3788                  * (unconditionally to avoid races)
3789                  */
3790                 tx_tspec->action = TX_TSPEC_ACTION_STOP_DOWNGRADE;
3791                 tx_tspec->downgraded = false;
3792                 ieee80211_sta_handle_tspec_ac_params(sdata);
3793
3794                 /* finally clear all the data */
3795                 memset(tx_tspec, 0, sizeof(*tx_tspec));
3796
3797                 return 0;
3798         }
3799
3800         return -ENOENT;
3801 }
3802
3803 const struct cfg80211_ops mac80211_config_ops = {
3804         .add_virtual_intf = ieee80211_add_iface,
3805         .del_virtual_intf = ieee80211_del_iface,
3806         .change_virtual_intf = ieee80211_change_iface,
3807         .start_p2p_device = ieee80211_start_p2p_device,
3808         .stop_p2p_device = ieee80211_stop_p2p_device,
3809         .add_key = ieee80211_add_key,
3810         .del_key = ieee80211_del_key,
3811         .get_key = ieee80211_get_key,
3812         .set_default_key = ieee80211_config_default_key,
3813         .set_default_mgmt_key = ieee80211_config_default_mgmt_key,
3814         .start_ap = ieee80211_start_ap,
3815         .change_beacon = ieee80211_change_beacon,
3816         .stop_ap = ieee80211_stop_ap,
3817         .add_station = ieee80211_add_station,
3818         .del_station = ieee80211_del_station,
3819         .change_station = ieee80211_change_station,
3820         .get_station = ieee80211_get_station,
3821         .dump_station = ieee80211_dump_station,
3822         .dump_survey = ieee80211_dump_survey,
3823 #ifdef CONFIG_MAC80211_MESH
3824         .add_mpath = ieee80211_add_mpath,
3825         .del_mpath = ieee80211_del_mpath,
3826         .change_mpath = ieee80211_change_mpath,
3827         .get_mpath = ieee80211_get_mpath,
3828         .dump_mpath = ieee80211_dump_mpath,
3829         .get_mpp = ieee80211_get_mpp,
3830         .dump_mpp = ieee80211_dump_mpp,
3831         .update_mesh_config = ieee80211_update_mesh_config,
3832         .get_mesh_config = ieee80211_get_mesh_config,
3833         .join_mesh = ieee80211_join_mesh,
3834         .leave_mesh = ieee80211_leave_mesh,
3835 #endif
3836         .join_ocb = ieee80211_join_ocb,
3837         .leave_ocb = ieee80211_leave_ocb,
3838         .change_bss = ieee80211_change_bss,
3839         .set_txq_params = ieee80211_set_txq_params,
3840         .set_monitor_channel = ieee80211_set_monitor_channel,
3841         .suspend = ieee80211_suspend,
3842         .resume = ieee80211_resume,
3843         .scan = ieee80211_scan,
3844         .sched_scan_start = ieee80211_sched_scan_start,
3845         .sched_scan_stop = ieee80211_sched_scan_stop,
3846         .auth = ieee80211_auth,
3847         .assoc = ieee80211_assoc,
3848         .deauth = ieee80211_deauth,
3849         .disassoc = ieee80211_disassoc,
3850         .join_ibss = ieee80211_join_ibss,
3851         .leave_ibss = ieee80211_leave_ibss,
3852         .set_mcast_rate = ieee80211_set_mcast_rate,
3853         .set_wiphy_params = ieee80211_set_wiphy_params,
3854         .set_tx_power = ieee80211_set_tx_power,
3855         .get_tx_power = ieee80211_get_tx_power,
3856         .set_wds_peer = ieee80211_set_wds_peer,
3857         .rfkill_poll = ieee80211_rfkill_poll,
3858         CFG80211_TESTMODE_CMD(ieee80211_testmode_cmd)
3859         CFG80211_TESTMODE_DUMP(ieee80211_testmode_dump)
3860         .set_power_mgmt = ieee80211_set_power_mgmt,
3861         .set_bitrate_mask = ieee80211_set_bitrate_mask,
3862         .remain_on_channel = ieee80211_remain_on_channel,
3863         .cancel_remain_on_channel = ieee80211_cancel_remain_on_channel,
3864         .mgmt_tx = ieee80211_mgmt_tx,
3865         .mgmt_tx_cancel_wait = ieee80211_mgmt_tx_cancel_wait,
3866         .set_cqm_rssi_config = ieee80211_set_cqm_rssi_config,
3867         .mgmt_frame_register = ieee80211_mgmt_frame_register,
3868         .set_antenna = ieee80211_set_antenna,
3869         .get_antenna = ieee80211_get_antenna,
3870         .set_rekey_data = ieee80211_set_rekey_data,
3871         .tdls_oper = ieee80211_tdls_oper,
3872         .tdls_mgmt = ieee80211_tdls_mgmt,
3873         .tdls_channel_switch = ieee80211_tdls_channel_switch,
3874         .tdls_cancel_channel_switch = ieee80211_tdls_cancel_channel_switch,
3875         .probe_client = ieee80211_probe_client,
3876         .set_noack_map = ieee80211_set_noack_map,
3877 #ifdef CONFIG_PM
3878         .set_wakeup = ieee80211_set_wakeup,
3879 #endif
3880         .get_channel = ieee80211_cfg_get_channel,
3881         .start_radar_detection = ieee80211_start_radar_detection,
3882         .channel_switch = ieee80211_channel_switch,
3883         .set_qos_map = ieee80211_set_qos_map,
3884         .set_ap_chanwidth = ieee80211_set_ap_chanwidth,
3885         .add_tx_ts = ieee80211_add_tx_ts,
3886         .del_tx_ts = ieee80211_del_tx_ts,
3887 };