net/mac80211/cfg.c

   1 /*
   2  * mac80211 configuration hooks for cfg80211
   3  *
   4  * Copyright 2006-2010  Johannes Berg <johannes@sipsolutions.net>
   5  *
   6  * This file is GPLv2 as found in COPYING.
   7  */
   8
   9 #include <linux/ieee80211.h>
  10 #include <linux/nl80211.h>
  11 #include <linux/rtnetlink.h>
  12 #include <linux/slab.h>
  13 #include <net/net_namespace.h>
  14 #include <linux/rcupdate.h>
  15 #include <net/cfg80211.h>
  16 #include "ieee80211_i.h"
  17 #include "driver-ops.h"
  18 #include "cfg.h"
  19 #include "rate.h"
  20 #include "mesh.h"
  21
  22 static struct net_device *ieee80211_add_iface(struct wiphy *wiphy, char *name,
  23                                               enum nl80211_iftype type,
  24                                               u32 *flags,
  25                                               struct vif_params *params)
  26 {
  27         struct ieee80211_local *local = wiphy_priv(wiphy);
  28         struct net_device *dev;
  29         struct ieee80211_sub_if_data *sdata;
  30         int err;
  31
  32         err = ieee80211_if_add(local, name, &dev, type, params);
  33         if (err)
  34                 return ERR_PTR(err);
  35
  36         if (type == NL80211_IFTYPE_MONITOR && flags) {
  37                 sdata = IEEE80211_DEV_TO_SUB_IF(dev);
  38                 sdata->u.mntr_flags = *flags;
  39         }
  40
  41         return dev;
  42 }
  43
  44 static int ieee80211_del_iface(struct wiphy *wiphy, struct net_device *dev)
  45 {
  46         ieee80211_if_remove(IEEE80211_DEV_TO_SUB_IF(dev));
  47
  48         return 0;
  49 }
  50
  51 static int ieee80211_change_iface(struct wiphy *wiphy,
  52                                   struct net_device *dev,
  53                                   enum nl80211_iftype type, u32 *flags,
  54                                   struct vif_params *params)
  55 {
  56         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
  57         int ret;
  58
  59         ret = ieee80211_if_change_type(sdata, type);
  60         if (ret)
  61                 return ret;
  62
  63         if (type == NL80211_IFTYPE_AP_VLAN &&
  64             params && params->use_4addr == 0)
  65                 RCU_INIT_POINTER(sdata->u.vlan.sta, NULL);
  66         else if (type == NL80211_IFTYPE_STATION &&
  67                  params && params->use_4addr >= 0)
  68                 sdata->u.mgd.use_4addr = params->use_4addr;
  69
  70         if (sdata->vif.type == NL80211_IFTYPE_MONITOR && flags) {
  71                 struct ieee80211_local *local = sdata->local;
  72
  73                 if (ieee80211_sdata_running(sdata)) {
  74                         /*
  75                          * Prohibit MONITOR_FLAG_COOK_FRAMES to be
  76                          * changed while the interface is up.
  77                          * Else we would need to add a lot of cruft
  78                          * to update everything:
  79                          *      cooked_mntrs, monitor and all fif_* counters
  80                          *      reconfigure hardware
  81                          */
  82                         if ((*flags & MONITOR_FLAG_COOK_FRAMES) !=
  83                             (sdata->u.mntr_flags & MONITOR_FLAG_COOK_FRAMES))
  84                                 return -EBUSY;
  85
  86                         ieee80211_adjust_monitor_flags(sdata, -1);
  87                         sdata->u.mntr_flags = *flags;
  88                         ieee80211_adjust_monitor_flags(sdata, 1);
  89
  90                         ieee80211_configure_filter(local);
  91                 } else {
  92                         /*
  93                          * Because the interface is down, ieee80211_do_stop
  94                          * and ieee80211_do_open take care of "everything"
  95                          * mentioned in the comment above.
  96                          */
  97                         sdata->u.mntr_flags = *flags;
  98                 }
  99         }
 100
 101         return 0;
 102 }
 103
 104 static int ieee80211_add_key(struct wiphy *wiphy, struct net_device *dev,
 105                              u8 key_idx, bool pairwise, const u8 *mac_addr,
 106                              struct key_params *params)
 107 {
 108         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 109         struct sta_info *sta = NULL;
 110         struct ieee80211_key *key;
 111         int err;
 112
 113         if (!ieee80211_sdata_running(sdata))
 114                 return -ENETDOWN;
 115
 116         /* reject WEP and TKIP keys if WEP failed to initialize */
 117         switch (params->cipher) {
 118         case WLAN_CIPHER_SUITE_WEP40:
 119         case WLAN_CIPHER_SUITE_TKIP:
 120         case WLAN_CIPHER_SUITE_WEP104:
 121                 if (IS_ERR(sdata->local->wep_tx_tfm))
 122                         return -EINVAL;
 123                 break;
 124         default:
 125                 break;
 126         }
 127
 128         key = ieee80211_key_alloc(params->cipher, key_idx, params->key_len,
 129                                   params->key, params->seq_len, params->seq);
 130         if (IS_ERR(key))
 131                 return PTR_ERR(key);
 132
 133         if (pairwise)
 134                 key->conf.flags |= IEEE80211_KEY_FLAG_PAIRWISE;
 135
 136         mutex_lock(&sdata->local->sta_mtx);
 137
 138         if (mac_addr) {
 139                 if (ieee80211_vif_is_mesh(&sdata->vif))
 140                         sta = sta_info_get(sdata, mac_addr);
 141                 else
 142                         sta = sta_info_get_bss(sdata, mac_addr);
 143                 if (!sta) {
 144                         ieee80211_key_free(sdata->local, key);
 145                         err = -ENOENT;
 146                         goto out_unlock;
 147                 }
 148         }
 149
 150         err = ieee80211_key_link(key, sdata, sta);
 151         if (err)
 152                 ieee80211_key_free(sdata->local, key);
 153
 154  out_unlock:
 155         mutex_unlock(&sdata->local->sta_mtx);
 156
 157         return err;
 158 }
 159
 160 static int ieee80211_del_key(struct wiphy *wiphy, struct net_device *dev,
 161                              u8 key_idx, bool pairwise, const u8 *mac_addr)
 162 {
 163         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 164         struct ieee80211_local *local = sdata->local;
 165         struct sta_info *sta;
 166         struct ieee80211_key *key = NULL;
 167         int ret;
 168
 169         mutex_lock(&local->sta_mtx);
 170         mutex_lock(&local->key_mtx);
 171
 172         if (mac_addr) {
 173                 ret = -ENOENT;
 174
 175                 sta = sta_info_get_bss(sdata, mac_addr);
 176                 if (!sta)
 177                         goto out_unlock;
 178
 179                 if (pairwise)
 180                         key = key_mtx_dereference(local, sta->ptk);
 181                 else
 182                         key = key_mtx_dereference(local, sta->gtk[key_idx]);
 183         } else
 184                 key = key_mtx_dereference(local, sdata->keys[key_idx]);
 185
 186         if (!key) {
 187                 ret = -ENOENT;
 188                 goto out_unlock;
 189         }
 190
 191         __ieee80211_key_free(key);
 192
 193         ret = 0;
 194  out_unlock:
 195         mutex_unlock(&local->key_mtx);
 196         mutex_unlock(&local->sta_mtx);
 197
 198         return ret;
 199 }
 200
 201 static int ieee80211_get_key(struct wiphy *wiphy, struct net_device *dev,
 202                              u8 key_idx, bool pairwise, const u8 *mac_addr,
 203                              void *cookie,
 204                              void (*callback)(void *cookie,
 205                                               struct key_params *params))
 206 {
 207         struct ieee80211_sub_if_data *sdata;
 208         struct sta_info *sta = NULL;
 209         u8 seq[6] = {0};
 210         struct key_params params;
 211         struct ieee80211_key *key = NULL;
 212         u64 pn64;
 213         u32 iv32;
 214         u16 iv16;
 215         int err = -ENOENT;
 216
 217         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 218
 219         rcu_read_lock();
 220
 221         if (mac_addr) {
 222                 sta = sta_info_get_bss(sdata, mac_addr);
 223                 if (!sta)
 224                         goto out;
 225
 226                 if (pairwise)
 227                         key = rcu_dereference(sta->ptk);
 228                 else if (key_idx < NUM_DEFAULT_KEYS)
 229                         key = rcu_dereference(sta->gtk[key_idx]);
 230         } else
 231                 key = rcu_dereference(sdata->keys[key_idx]);
 232
 233         if (!key)
 234                 goto out;
 235
 236         memset(&params, 0, sizeof(params));
 237
 238         params.cipher = key->conf.cipher;
 239
 240         switch (key->conf.cipher) {
 241         case WLAN_CIPHER_SUITE_TKIP:
 242                 iv32 = key->u.tkip.tx.iv32;
 243                 iv16 = key->u.tkip.tx.iv16;
 244
 245                 if (key->flags & KEY_FLAG_UPLOADED_TO_HARDWARE)
 246                         drv_get_tkip_seq(sdata->local,
 247                                          key->conf.hw_key_idx,
 248                                          &iv32, &iv16);
 249
 250                 seq[0] = iv16 & 0xff;
 251                 seq[1] = (iv16 >> 8) & 0xff;
 252                 seq[2] = iv32 & 0xff;
 253                 seq[3] = (iv32 >> 8) & 0xff;
 254                 seq[4] = (iv32 >> 16) & 0xff;
 255                 seq[5] = (iv32 >> 24) & 0xff;
 256                 params.seq = seq;
 257                 params.seq_len = 6;
 258                 break;
 259         case WLAN_CIPHER_SUITE_CCMP:
 260                 pn64 = atomic64_read(&key->u.ccmp.tx_pn);
 261                 seq[0] = pn64;
 262                 seq[1] = pn64 >> 8;
 263                 seq[2] = pn64 >> 16;
 264                 seq[3] = pn64 >> 24;
 265                 seq[4] = pn64 >> 32;
 266                 seq[5] = pn64 >> 40;
 267                 params.seq = seq;
 268                 params.seq_len = 6;
 269                 break;
 270         case WLAN_CIPHER_SUITE_AES_CMAC:
 271                 pn64 = atomic64_read(&key->u.aes_cmac.tx_pn);
 272                 seq[0] = pn64;
 273                 seq[1] = pn64 >> 8;
 274                 seq[2] = pn64 >> 16;
 275                 seq[3] = pn64 >> 24;
 276                 seq[4] = pn64 >> 32;
 277                 seq[5] = pn64 >> 40;
 278                 params.seq = seq;
 279                 params.seq_len = 6;
 280                 break;
 281         }
 282
 283         params.key = key->conf.key;
 284         params.key_len = key->conf.keylen;
 285
 286         callback(cookie, &params);
 287         err = 0;
 288
 289  out:
 290         rcu_read_unlock();
 291         return err;
 292 }
 293
 294 static int ieee80211_config_default_key(struct wiphy *wiphy,
 295                                         struct net_device *dev,
 296                                         u8 key_idx, bool uni,
 297                                         bool multi)
 298 {
 299         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 300
 301         ieee80211_set_default_key(sdata, key_idx, uni, multi);
 302
 303         return 0;
 304 }
 305
 306 static int ieee80211_config_default_mgmt_key(struct wiphy *wiphy,
 307                                              struct net_device *dev,
 308                                              u8 key_idx)
 309 {
 310         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 311
 312         ieee80211_set_default_mgmt_key(sdata, key_idx);
 313
 314         return 0;
 315 }
 316
 317 static void rate_idx_to_bitrate(struct rate_info *rate, struct sta_info *sta, int idx)
 318 {
 319         if (!(rate->flags & RATE_INFO_FLAGS_MCS)) {
 320                 struct ieee80211_supported_band *sband;
 321                 sband = sta->local->hw.wiphy->bands[
 322                                 sta->local->hw.conf.channel->band];
 323                 rate->legacy = sband->bitrates[idx].bitrate;
 324         } else
 325                 rate->mcs = idx;
 326 }
 327
 328 static void sta_set_sinfo(struct sta_info *sta, struct station_info *sinfo)
 329 {
 330         struct ieee80211_sub_if_data *sdata = sta->sdata;
 331         struct timespec uptime;
 332
 333         sinfo->generation = sdata->local->sta_generation;
 334
 335         sinfo->filled = STATION_INFO_INACTIVE_TIME |
 336                         STATION_INFO_RX_BYTES |
 337                         STATION_INFO_TX_BYTES |
 338                         STATION_INFO_RX_PACKETS |
 339                         STATION_INFO_TX_PACKETS |
 340                         STATION_INFO_TX_RETRIES |
 341                         STATION_INFO_TX_FAILED |
 342                         STATION_INFO_TX_BITRATE |
 343                         STATION_INFO_RX_BITRATE |
 344                         STATION_INFO_RX_DROP_MISC |
 345                         STATION_INFO_BSS_PARAM |
 346                         STATION_INFO_CONNECTED_TIME;
 347
 348         do_posix_clock_monotonic_gettime(&uptime);
 349         sinfo->connected_time = uptime.tv_sec - sta->last_connected;
 350
 351         sinfo->inactive_time = jiffies_to_msecs(jiffies - sta->last_rx);
 352         sinfo->rx_bytes = sta->rx_bytes;
 353         sinfo->tx_bytes = sta->tx_bytes;
 354         sinfo->rx_packets = sta->rx_packets;
 355         sinfo->tx_packets = sta->tx_packets;
 356         sinfo->tx_retries = sta->tx_retry_count;
 357         sinfo->tx_failed = sta->tx_retry_failed;
 358         sinfo->rx_dropped_misc = sta->rx_dropped;
 359
 360         if ((sta->local->hw.flags & IEEE80211_HW_SIGNAL_DBM) ||
 361             (sta->local->hw.flags & IEEE80211_HW_SIGNAL_UNSPEC)) {
 362                 sinfo->filled |= STATION_INFO_SIGNAL | STATION_INFO_SIGNAL_AVG;
 363                 sinfo->signal = (s8)sta->last_signal;
 364                 sinfo->signal_avg = (s8) -ewma_read(&sta->avg_signal);
 365         }
 366
 367         sinfo->txrate.flags = 0;
 368         if (sta->last_tx_rate.flags & IEEE80211_TX_RC_MCS)
 369                 sinfo->txrate.flags |= RATE_INFO_FLAGS_MCS;
 370         if (sta->last_tx_rate.flags & IEEE80211_TX_RC_40_MHZ_WIDTH)
 371                 sinfo->txrate.flags |= RATE_INFO_FLAGS_40_MHZ_WIDTH;
 372         if (sta->last_tx_rate.flags & IEEE80211_TX_RC_SHORT_GI)
 373                 sinfo->txrate.flags |= RATE_INFO_FLAGS_SHORT_GI;
 374         rate_idx_to_bitrate(&sinfo->txrate, sta, sta->last_tx_rate.idx);
 375
 376         sinfo->rxrate.flags = 0;
 377         if (sta->last_rx_rate_flag & RX_FLAG_HT)
 378                 sinfo->rxrate.flags |= RATE_INFO_FLAGS_MCS;
 379         if (sta->last_rx_rate_flag & RX_FLAG_40MHZ)
 380                 sinfo->rxrate.flags |= RATE_INFO_FLAGS_40_MHZ_WIDTH;
 381         if (sta->last_rx_rate_flag & RX_FLAG_SHORT_GI)
 382                 sinfo->rxrate.flags |= RATE_INFO_FLAGS_SHORT_GI;
 383         rate_idx_to_bitrate(&sinfo->rxrate, sta, sta->last_rx_rate_idx);
 384
 385         if (ieee80211_vif_is_mesh(&sdata->vif)) {
 386 #ifdef CONFIG_MAC80211_MESH
 387                 sinfo->filled |= STATION_INFO_LLID |
 388                                  STATION_INFO_PLID |
 389                                  STATION_INFO_PLINK_STATE;
 390
 391                 sinfo->llid = le16_to_cpu(sta->llid);
 392                 sinfo->plid = le16_to_cpu(sta->plid);
 393                 sinfo->plink_state = sta->plink_state;
 394 #endif
 395         }
 396
 397         sinfo->bss_param.flags = 0;
 398         if (sdata->vif.bss_conf.use_cts_prot)
 399                 sinfo->bss_param.flags |= BSS_PARAM_FLAGS_CTS_PROT;
 400         if (sdata->vif.bss_conf.use_short_preamble)
 401                 sinfo->bss_param.flags |= BSS_PARAM_FLAGS_SHORT_PREAMBLE;
 402         if (sdata->vif.bss_conf.use_short_slot)
 403                 sinfo->bss_param.flags |= BSS_PARAM_FLAGS_SHORT_SLOT_TIME;
 404         sinfo->bss_param.dtim_period = sdata->local->hw.conf.ps_dtim_period;
 405         sinfo->bss_param.beacon_interval = sdata->vif.bss_conf.beacon_int;
 406 }
 407
 408
 409 static int ieee80211_dump_station(struct wiphy *wiphy, struct net_device *dev,
 410                                  int idx, u8 *mac, struct station_info *sinfo)
 411 {
 412         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 413         struct sta_info *sta;
 414         int ret = -ENOENT;
 415
 416         rcu_read_lock();
 417
 418         sta = sta_info_get_by_idx(sdata, idx);
 419         if (sta) {
 420                 ret = 0;
 421                 memcpy(mac, sta->sta.addr, ETH_ALEN);
 422                 sta_set_sinfo(sta, sinfo);
 423         }
 424
 425         rcu_read_unlock();
 426
 427         return ret;
 428 }
 429
 430 static int ieee80211_dump_survey(struct wiphy *wiphy, struct net_device *dev,
 431                                  int idx, struct survey_info *survey)
 432 {
 433         struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
 434
 435         return drv_get_survey(local, idx, survey);
 436 }
 437
 438 static int ieee80211_get_station(struct wiphy *wiphy, struct net_device *dev,
 439                                  u8 *mac, struct station_info *sinfo)
 440 {
 441         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 442         struct sta_info *sta;
 443         int ret = -ENOENT;
 444
 445         rcu_read_lock();
 446
 447         sta = sta_info_get_bss(sdata, mac);
 448         if (sta) {
 449                 ret = 0;
 450                 sta_set_sinfo(sta, sinfo);
 451         }
 452
 453         rcu_read_unlock();
 454
 455         return ret;
 456 }
 457
 458 /*
 459  * This handles both adding a beacon and setting new beacon info
 460  */
 461 static int ieee80211_config_beacon(struct ieee80211_sub_if_data *sdata,
 462                                    struct beacon_parameters *params)
 463 {
 464         struct beacon_data *new, *old;
 465         int new_head_len, new_tail_len;
 466         int size;
 467         int err = -EINVAL;
 468
 469         old = rtnl_dereference(sdata->u.ap.beacon);
 470
 471         /* head must not be zero-length */
 472         if (params->head && !params->head_len)
 473                 return -EINVAL;
 474
 475         /*
 476          * This is a kludge. beacon interval should really be part
 477          * of the beacon information.
 478          */
 479         if (params->interval &&
 480             (sdata->vif.bss_conf.beacon_int != params->interval)) {
 481                 sdata->vif.bss_conf.beacon_int = params->interval;
 482                 ieee80211_bss_info_change_notify(sdata,
 483                                                  BSS_CHANGED_BEACON_INT);
 484         }
 485
 486         /* Need to have a beacon head if we don't have one yet */
 487         if (!params->head && !old)
 488                 return err;
 489
 490         /* sorry, no way to start beaconing without dtim period */
 491         if (!params->dtim_period && !old)
 492                 return err;
 493
 494         /* new or old head? */
 495         if (params->head)
 496                 new_head_len = params->head_len;
 497         else
 498                 new_head_len = old->head_len;
 499
 500         /* new or old tail? */
 501         if (params->tail || !old)
 502                 /* params->tail_len will be zero for !params->tail */
 503                 new_tail_len = params->tail_len;
 504         else
 505                 new_tail_len = old->tail_len;
 506
 507         size = sizeof(*new) + new_head_len + new_tail_len;
 508
 509         new = kzalloc(size, GFP_KERNEL);
 510         if (!new)
 511                 return -ENOMEM;
 512
 513         /* start filling the new info now */
 514
 515         /* new or old dtim period? */
 516         if (params->dtim_period)
 517                 new->dtim_period = params->dtim_period;
 518         else
 519                 new->dtim_period = old->dtim_period;
 520
 521         /*
 522          * pointers go into the block we allocated,
 523          * memory is | beacon_data | head | tail |
 524          */
 525         new->head = ((u8 *) new) + sizeof(*new);
 526         new->tail = new->head + new_head_len;
 527         new->head_len = new_head_len;
 528         new->tail_len = new_tail_len;
 529
 530         /* copy in head */
 531         if (params->head)
 532                 memcpy(new->head, params->head, new_head_len);
 533         else
 534                 memcpy(new->head, old->head, new_head_len);
 535
 536         /* copy in optional tail */
 537         if (params->tail)
 538                 memcpy(new->tail, params->tail, new_tail_len);
 539         else
 540                 if (old)
 541                         memcpy(new->tail, old->tail, new_tail_len);
 542
 543         sdata->vif.bss_conf.dtim_period = new->dtim_period;
 544
 545         RCU_INIT_POINTER(sdata->u.ap.beacon, new);
 546
 547         synchronize_rcu();
 548
 549         kfree(old);
 550
 551         ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_BEACON_ENABLED |
 552                                                 BSS_CHANGED_BEACON);
 553         return 0;
 554 }
 555
 556 static int ieee80211_add_beacon(struct wiphy *wiphy, struct net_device *dev,
 557                                 struct beacon_parameters *params)
 558 {
 559         struct ieee80211_sub_if_data *sdata;
 560         struct beacon_data *old;
 561
 562         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 563
 564         old = rtnl_dereference(sdata->u.ap.beacon);
 565         if (old)
 566                 return -EALREADY;
 567
 568         return ieee80211_config_beacon(sdata, params);
 569 }
 570
 571 static int ieee80211_set_beacon(struct wiphy *wiphy, struct net_device *dev,
 572                                 struct beacon_parameters *params)
 573 {
 574         struct ieee80211_sub_if_data *sdata;
 575         struct beacon_data *old;
 576
 577         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 578
 579         old = rtnl_dereference(sdata->u.ap.beacon);
 580         if (!old)
 581                 return -ENOENT;
 582
 583         return ieee80211_config_beacon(sdata, params);
 584 }
 585
 586 static int ieee80211_del_beacon(struct wiphy *wiphy, struct net_device *dev)
 587 {
 588         struct ieee80211_sub_if_data *sdata;
 589         struct beacon_data *old;
 590
 591         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 592
 593         old = rtnl_dereference(sdata->u.ap.beacon);
 594         if (!old)
 595                 return -ENOENT;
 596
 597         RCU_INIT_POINTER(sdata->u.ap.beacon, NULL);
 598         synchronize_rcu();
 599         kfree(old);
 600
 601         ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_BEACON_ENABLED);
 602         return 0;
 603 }
 604
 605 /* Layer 2 Update frame (802.2 Type 1 LLC XID Update response) */
 606 struct iapp_layer2_update {
 607         u8 da[ETH_ALEN];        /* broadcast */
 608         u8 sa[ETH_ALEN];        /* STA addr */
 609         __be16 len;             /* 6 */
 610         u8 dsap;                /* 0 */
 611         u8 ssap;                /* 0 */
 612         u8 control;
 613         u8 xid_info[3];
 614 } __packed;
 615
 616 static void ieee80211_send_layer2_update(struct sta_info *sta)
 617 {
 618         struct iapp_layer2_update *msg;
 619         struct sk_buff *skb;
 620
 621         /* Send Level 2 Update Frame to update forwarding tables in layer 2
 622          * bridge devices */
 623
 624         skb = dev_alloc_skb(sizeof(*msg));
 625         if (!skb)
 626                 return;
 627         msg = (struct iapp_layer2_update *)skb_put(skb, sizeof(*msg));
 628
 629         /* 802.2 Type 1 Logical Link Control (LLC) Exchange Identifier (XID)
 630          * Update response frame; IEEE Std 802.2-1998, 5.4.1.2.1 */
 631
 632         memset(msg->da, 0xff, ETH_ALEN);
 633         memcpy(msg->sa, sta->sta.addr, ETH_ALEN);
 634         msg->len = htons(6);
 635         msg->dsap = 0;
 636         msg->ssap = 0x01;       /* NULL LSAP, CR Bit: Response */
 637         msg->control = 0xaf;    /* XID response lsb.1111F101.
 638                                  * F=0 (no poll command; unsolicited frame) */
 639         msg->xid_info[0] = 0x81;        /* XID format identifier */
 640         msg->xid_info[1] = 1;   /* LLC types/classes: Type 1 LLC */
 641         msg->xid_info[2] = 0;   /* XID sender's receive window size (RW) */
 642
 643         skb->dev = sta->sdata->dev;
 644         skb->protocol = eth_type_trans(skb, sta->sdata->dev);
 645         memset(skb->cb, 0, sizeof(skb->cb));
 646         netif_rx_ni(skb);
 647 }
 648
 649 static void sta_apply_parameters(struct ieee80211_local *local,
 650                                  struct sta_info *sta,
 651                                  struct station_parameters *params)
 652 {
 653         unsigned long flags;
 654         u32 rates;
 655         int i, j;
 656         struct ieee80211_supported_band *sband;
 657         struct ieee80211_sub_if_data *sdata = sta->sdata;
 658         u32 mask, set;
 659
 660         sband = local->hw.wiphy->bands[local->oper_channel->band];
 661
 662         spin_lock_irqsave(&sta->flaglock, flags);
 663         mask = params->sta_flags_mask;
 664         set = params->sta_flags_set;
 665
 666         if (mask & BIT(NL80211_STA_FLAG_AUTHORIZED)) {
 667                 sta->flags &= ~WLAN_STA_AUTHORIZED;
 668                 if (set & BIT(NL80211_STA_FLAG_AUTHORIZED))
 669                         sta->flags |= WLAN_STA_AUTHORIZED;
 670         }
 671
 672         if (mask & BIT(NL80211_STA_FLAG_SHORT_PREAMBLE)) {
 673                 sta->flags &= ~WLAN_STA_SHORT_PREAMBLE;
 674                 if (set & BIT(NL80211_STA_FLAG_SHORT_PREAMBLE))
 675                         sta->flags |= WLAN_STA_SHORT_PREAMBLE;
 676         }
 677
 678         if (mask & BIT(NL80211_STA_FLAG_WME)) {
 679                 sta->flags &= ~WLAN_STA_WME;
 680                 sta->sta.wme = false;
 681                 if (set & BIT(NL80211_STA_FLAG_WME)) {
 682                         sta->flags |= WLAN_STA_WME;
 683                         sta->sta.wme = true;
 684                 }
 685         }
 686
 687         if (mask & BIT(NL80211_STA_FLAG_MFP)) {
 688                 sta->flags &= ~WLAN_STA_MFP;
 689                 if (set & BIT(NL80211_STA_FLAG_MFP))
 690                         sta->flags |= WLAN_STA_MFP;
 691         }
 692
 693         if (mask & BIT(NL80211_STA_FLAG_AUTHENTICATED)) {
 694                 sta->flags &= ~WLAN_STA_AUTH;
 695                 if (set & BIT(NL80211_STA_FLAG_AUTHENTICATED))
 696                         sta->flags |= WLAN_STA_AUTH;
 697         }
 698         spin_unlock_irqrestore(&sta->flaglock, flags);
 699
 700         sta->sta.uapsd_queues = params->uapsd_queues;
 701         sta->sta.max_sp = params->max_sp;
 702
 703         /*
 704          * cfg80211 validates this (1-2007) and allows setting the AID
 705          * only when creating a new station entry
 706          */
 707         if (params->aid)
 708                 sta->sta.aid = params->aid;
 709
 710         /*
 711          * FIXME: updating the following information is racy when this
 712          *        function is called from ieee80211_change_station().
 713          *        However, all this information should be static so
 714          *        maybe we should just reject attemps to change it.
 715          */
 716
 717         if (params->listen_interval >= 0)
 718                 sta->listen_interval = params->listen_interval;
 719
 720         if (params->supported_rates) {
 721                 rates = 0;
 722
 723                 for (i = 0; i < params->supported_rates_len; i++) {
 724                         int rate = (params->supported_rates[i] & 0x7f) * 5;
 725                         for (j = 0; j < sband->n_bitrates; j++) {
 726                                 if (sband->bitrates[j].bitrate == rate)
 727                                         rates |= BIT(j);
 728                         }
 729                 }
 730                 sta->sta.supp_rates[local->oper_channel->band] = rates;
 731         }
 732
 733         if (params->ht_capa)
 734                 ieee80211_ht_cap_ie_to_sta_ht_cap(sband,
 735                                                   params->ht_capa,
 736                                                   &sta->sta.ht_cap);
 737
 738         if (ieee80211_vif_is_mesh(&sdata->vif)) {
 739 #ifdef CONFIG_MAC80211_MESH
 740                 if (sdata->u.mesh.security & IEEE80211_MESH_SEC_SECURED)
 741                         switch (params->plink_state) {
 742                         case NL80211_PLINK_LISTEN:
 743                         case NL80211_PLINK_ESTAB:
 744                         case NL80211_PLINK_BLOCKED:
 745                                 sta->plink_state = params->plink_state;
 746                                 break;
 747                         default:
 748                                 /*  nothing  */
 749                                 break;
 750                         }
 751                 else
 752                         switch (params->plink_action) {
 753                         case PLINK_ACTION_OPEN:
 754                                 mesh_plink_open(sta);
 755                                 break;
 756                         case PLINK_ACTION_BLOCK:
 757                                 mesh_plink_block(sta);
 758                                 break;
 759                         }
 760 #endif
 761         }
 762 }
 763
 764 static int ieee80211_add_station(struct wiphy *wiphy, struct net_device *dev,
 765                                  u8 *mac, struct station_parameters *params)
 766 {
 767         struct ieee80211_local *local = wiphy_priv(wiphy);
 768         struct sta_info *sta;
 769         struct ieee80211_sub_if_data *sdata;
 770         int err;
 771         int layer2_update;
 772
 773         if (params->vlan) {
 774                 sdata = IEEE80211_DEV_TO_SUB_IF(params->vlan);
 775
 776                 if (sdata->vif.type != NL80211_IFTYPE_AP_VLAN &&
 777                     sdata->vif.type != NL80211_IFTYPE_AP)
 778                         return -EINVAL;
 779         } else
 780                 sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 781
 782         if (compare_ether_addr(mac, sdata->vif.addr) == 0)
 783                 return -EINVAL;
 784
 785         if (is_multicast_ether_addr(mac))
 786                 return -EINVAL;
 787
 788         sta = sta_info_alloc(sdata, mac, GFP_KERNEL);
 789         if (!sta)
 790                 return -ENOMEM;
 791
 792         sta->flags = WLAN_STA_AUTH | WLAN_STA_ASSOC;
 793
 794         sta_apply_parameters(local, sta, params);
 795
 796         rate_control_rate_init(sta);
 797
 798         layer2_update = sdata->vif.type == NL80211_IFTYPE_AP_VLAN ||
 799                 sdata->vif.type == NL80211_IFTYPE_AP;
 800
 801         err = sta_info_insert_rcu(sta);
 802         if (err) {
 803                 rcu_read_unlock();
 804                 return err;
 805         }
 806
 807         if (layer2_update)
 808                 ieee80211_send_layer2_update(sta);
 809
 810         rcu_read_unlock();
 811
 812         return 0;
 813 }
 814
 815 static int ieee80211_del_station(struct wiphy *wiphy, struct net_device *dev,
 816                                  u8 *mac)
 817 {
 818         struct ieee80211_local *local = wiphy_priv(wiphy);
 819         struct ieee80211_sub_if_data *sdata;
 820
 821         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 822
 823         if (mac)
 824                 return sta_info_destroy_addr_bss(sdata, mac);
 825
 826         sta_info_flush(local, sdata);
 827         return 0;
 828 }
 829
 830 static int ieee80211_change_station(struct wiphy *wiphy,
 831                                     struct net_device *dev,
 832                                     u8 *mac,
 833                                     struct station_parameters *params)
 834 {
 835         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 836         struct ieee80211_local *local = wiphy_priv(wiphy);
 837         struct sta_info *sta;
 838         struct ieee80211_sub_if_data *vlansdata;
 839
 840         rcu_read_lock();
 841
 842         sta = sta_info_get_bss(sdata, mac);
 843         if (!sta) {
 844                 rcu_read_unlock();
 845                 return -ENOENT;
 846         }
 847
 848         if (params->vlan && params->vlan != sta->sdata->dev) {
 849                 vlansdata = IEEE80211_DEV_TO_SUB_IF(params->vlan);
 850
 851                 if (vlansdata->vif.type != NL80211_IFTYPE_AP_VLAN &&
 852                     vlansdata->vif.type != NL80211_IFTYPE_AP) {
 853                         rcu_read_unlock();
 854                         return -EINVAL;
 855                 }
 856
 857                 if (params->vlan->ieee80211_ptr->use_4addr) {
 858                         if (vlansdata->u.vlan.sta) {
 859                                 rcu_read_unlock();
 860                                 return -EBUSY;
 861                         }
 862
 863                         RCU_INIT_POINTER(vlansdata->u.vlan.sta, sta);
 864                 }
 865
 866                 sta->sdata = vlansdata;
 867                 ieee80211_send_layer2_update(sta);
 868         }
 869
 870         sta_apply_parameters(local, sta, params);
 871
 872         rcu_read_unlock();
 873
 874         if (sdata->vif.type == NL80211_IFTYPE_STATION &&
 875             params->sta_flags_mask & BIT(NL80211_STA_FLAG_AUTHORIZED))
 876                 ieee80211_recalc_ps(local, -1);
 877
 878         return 0;
 879 }
 880
 881 #ifdef CONFIG_MAC80211_MESH
 882 static int ieee80211_add_mpath(struct wiphy *wiphy, struct net_device *dev,
 883                                  u8 *dst, u8 *next_hop)
 884 {
 885         struct ieee80211_sub_if_data *sdata;
 886         struct mesh_path *mpath;
 887         struct sta_info *sta;
 888         int err;
 889
 890         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 891
 892         rcu_read_lock();
 893         sta = sta_info_get(sdata, next_hop);
 894         if (!sta) {
 895                 rcu_read_unlock();
 896                 return -ENOENT;
 897         }
 898
 899         err = mesh_path_add(dst, sdata);
 900         if (err) {
 901                 rcu_read_unlock();
 902                 return err;
 903         }
 904
 905         mpath = mesh_path_lookup(dst, sdata);
 906         if (!mpath) {
 907                 rcu_read_unlock();
 908                 return -ENXIO;
 909         }
 910         mesh_path_fix_nexthop(mpath, sta);
 911
 912         rcu_read_unlock();
 913         return 0;
 914 }
 915
 916 static int ieee80211_del_mpath(struct wiphy *wiphy, struct net_device *dev,
 917                                  u8 *dst)
 918 {
 919         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 920
 921         if (dst)
 922                 return mesh_path_del(dst, sdata);
 923
 924         mesh_path_flush(sdata);
 925         return 0;
 926 }
 927
 928 static int ieee80211_change_mpath(struct wiphy *wiphy,
 929                                     struct net_device *dev,
 930                                     u8 *dst, u8 *next_hop)
 931 {
 932         struct ieee80211_sub_if_data *sdata;
 933         struct mesh_path *mpath;
 934         struct sta_info *sta;
 935
 936         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 937
 938         rcu_read_lock();
 939
 940         sta = sta_info_get(sdata, next_hop);
 941         if (!sta) {
 942                 rcu_read_unlock();
 943                 return -ENOENT;
 944         }
 945
 946         mpath = mesh_path_lookup(dst, sdata);
 947         if (!mpath) {
 948                 rcu_read_unlock();
 949                 return -ENOENT;
 950         }
 951
 952         mesh_path_fix_nexthop(mpath, sta);
 953
 954         rcu_read_unlock();
 955         return 0;
 956 }
 957
 958 static void mpath_set_pinfo(struct mesh_path *mpath, u8 *next_hop,
 959                             struct mpath_info *pinfo)
 960 {
 961         struct sta_info *next_hop_sta = rcu_dereference(mpath->next_hop);
 962
 963         if (next_hop_sta)
 964                 memcpy(next_hop, next_hop_sta->sta.addr, ETH_ALEN);
 965         else
 966                 memset(next_hop, 0, ETH_ALEN);
 967
 968         pinfo->generation = mesh_paths_generation;
 969
 970         pinfo->filled = MPATH_INFO_FRAME_QLEN |
 971                         MPATH_INFO_SN |
 972                         MPATH_INFO_METRIC |
 973                         MPATH_INFO_EXPTIME |
 974                         MPATH_INFO_DISCOVERY_TIMEOUT |
 975                         MPATH_INFO_DISCOVERY_RETRIES |
 976                         MPATH_INFO_FLAGS;
 977
 978         pinfo->frame_qlen = mpath->frame_queue.qlen;
 979         pinfo->sn = mpath->sn;
 980         pinfo->metric = mpath->metric;
 981         if (time_before(jiffies, mpath->exp_time))
 982                 pinfo->exptime = jiffies_to_msecs(mpath->exp_time - jiffies);
 983         pinfo->discovery_timeout =
 984                         jiffies_to_msecs(mpath->discovery_timeout);
 985         pinfo->discovery_retries = mpath->discovery_retries;
 986         pinfo->flags = 0;
 987         if (mpath->flags & MESH_PATH_ACTIVE)
 988                 pinfo->flags |= NL80211_MPATH_FLAG_ACTIVE;
 989         if (mpath->flags & MESH_PATH_RESOLVING)
 990                 pinfo->flags |= NL80211_MPATH_FLAG_RESOLVING;
 991         if (mpath->flags & MESH_PATH_SN_VALID)
 992                 pinfo->flags |= NL80211_MPATH_FLAG_SN_VALID;
 993         if (mpath->flags & MESH_PATH_FIXED)
 994                 pinfo->flags |= NL80211_MPATH_FLAG_FIXED;
 995         if (mpath->flags & MESH_PATH_RESOLVING)
 996                 pinfo->flags |= NL80211_MPATH_FLAG_RESOLVING;
 997
 998         pinfo->flags = mpath->flags;
 999 }
1000
1001 static int ieee80211_get_mpath(struct wiphy *wiphy, struct net_device *dev,
1002                                u8 *dst, u8 *next_hop, struct mpath_info *pinfo)
1003
1004 {
1005         struct ieee80211_sub_if_data *sdata;
1006         struct mesh_path *mpath;
1007
1008         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1009
1010         rcu_read_lock();
1011         mpath = mesh_path_lookup(dst, sdata);
1012         if (!mpath) {
1013                 rcu_read_unlock();
1014                 return -ENOENT;
1015         }
1016         memcpy(dst, mpath->dst, ETH_ALEN);
1017         mpath_set_pinfo(mpath, next_hop, pinfo);
1018         rcu_read_unlock();
1019         return 0;
1020 }
1021
1022 static int ieee80211_dump_mpath(struct wiphy *wiphy, struct net_device *dev,
1023                                  int idx, u8 *dst, u8 *next_hop,
1024                                  struct mpath_info *pinfo)
1025 {
1026         struct ieee80211_sub_if_data *sdata;
1027         struct mesh_path *mpath;
1028
1029         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1030
1031         rcu_read_lock();
1032         mpath = mesh_path_lookup_by_idx(idx, sdata);
1033         if (!mpath) {
1034                 rcu_read_unlock();
1035                 return -ENOENT;
1036         }
1037         memcpy(dst, mpath->dst, ETH_ALEN);
1038         mpath_set_pinfo(mpath, next_hop, pinfo);
1039         rcu_read_unlock();
1040         return 0;
1041 }
1042
1043 static int ieee80211_get_mesh_config(struct wiphy *wiphy,
1044                                 struct net_device *dev,
1045                                 struct mesh_config *conf)
1046 {
1047         struct ieee80211_sub_if_data *sdata;
1048         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1049
1050         memcpy(conf, &(sdata->u.mesh.mshcfg), sizeof(struct mesh_config));
1051         return 0;
1052 }
1053
1054 static inline bool _chg_mesh_attr(enum nl80211_meshconf_params parm, u32 mask)
1055 {
1056         return (mask >> (parm-1)) & 0x1;
1057 }
1058
1059 static int copy_mesh_setup(struct ieee80211_if_mesh *ifmsh,
1060                 const struct mesh_setup *setup)
1061 {
1062         u8 *new_ie;
1063         const u8 *old_ie;
1064
1065         /* allocate information elements */
1066         new_ie = NULL;
1067         old_ie = ifmsh->ie;
1068
1069         if (setup->ie_len) {
1070                 new_ie = kmemdup(setup->ie, setup->ie_len,
1071                                 GFP_KERNEL);
1072                 if (!new_ie)
1073                         return -ENOMEM;
1074         }
1075         ifmsh->ie_len = setup->ie_len;
1076         ifmsh->ie = new_ie;
1077         kfree(old_ie);
1078
1079         /* now copy the rest of the setup parameters */
1080         ifmsh->mesh_id_len = setup->mesh_id_len;
1081         memcpy(ifmsh->mesh_id, setup->mesh_id, ifmsh->mesh_id_len);
1082         ifmsh->mesh_pp_id = setup->path_sel_proto;
1083         ifmsh->mesh_pm_id = setup->path_metric;
1084         ifmsh->security = IEEE80211_MESH_SEC_NONE;
1085         if (setup->is_authenticated)
1086                 ifmsh->security |= IEEE80211_MESH_SEC_AUTHED;
1087         if (setup->is_secure)
1088                 ifmsh->security |= IEEE80211_MESH_SEC_SECURED;
1089
1090         return 0;
1091 }
1092
1093 static int ieee80211_update_mesh_config(struct wiphy *wiphy,
1094                                         struct net_device *dev, u32 mask,
1095                                         const struct mesh_config *nconf)
1096 {
1097         struct mesh_config *conf;
1098         struct ieee80211_sub_if_data *sdata;
1099         struct ieee80211_if_mesh *ifmsh;
1100
1101         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1102         ifmsh = &sdata->u.mesh;
1103
1104         /* Set the config options which we are interested in setting */
1105         conf = &(sdata->u.mesh.mshcfg);
1106         if (_chg_mesh_attr(NL80211_MESHCONF_RETRY_TIMEOUT, mask))
1107                 conf->dot11MeshRetryTimeout = nconf->dot11MeshRetryTimeout;
1108         if (_chg_mesh_attr(NL80211_MESHCONF_CONFIRM_TIMEOUT, mask))
1109                 conf->dot11MeshConfirmTimeout = nconf->dot11MeshConfirmTimeout;
1110         if (_chg_mesh_attr(NL80211_MESHCONF_HOLDING_TIMEOUT, mask))
1111                 conf->dot11MeshHoldingTimeout = nconf->dot11MeshHoldingTimeout;
1112         if (_chg_mesh_attr(NL80211_MESHCONF_MAX_PEER_LINKS, mask))
1113                 conf->dot11MeshMaxPeerLinks = nconf->dot11MeshMaxPeerLinks;
1114         if (_chg_mesh_attr(NL80211_MESHCONF_MAX_RETRIES, mask))
1115                 conf->dot11MeshMaxRetries = nconf->dot11MeshMaxRetries;
1116         if (_chg_mesh_attr(NL80211_MESHCONF_TTL, mask))
1117                 conf->dot11MeshTTL = nconf->dot11MeshTTL;
1118         if (_chg_mesh_attr(NL80211_MESHCONF_ELEMENT_TTL, mask))
1119                 conf->dot11MeshTTL = nconf->element_ttl;
1120         if (_chg_mesh_attr(NL80211_MESHCONF_AUTO_OPEN_PLINKS, mask))
1121                 conf->auto_open_plinks = nconf->auto_open_plinks;
1122         if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES, mask))
1123                 conf->dot11MeshHWMPmaxPREQretries =
1124                         nconf->dot11MeshHWMPmaxPREQretries;
1125         if (_chg_mesh_attr(NL80211_MESHCONF_PATH_REFRESH_TIME, mask))
1126                 conf->path_refresh_time = nconf->path_refresh_time;
1127         if (_chg_mesh_attr(NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT, mask))
1128                 conf->min_discovery_timeout = nconf->min_discovery_timeout;
1129         if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT, mask))
1130                 conf->dot11MeshHWMPactivePathTimeout =
1131                         nconf->dot11MeshHWMPactivePathTimeout;
1132         if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL, mask))
1133                 conf->dot11MeshHWMPpreqMinInterval =
1134                         nconf->dot11MeshHWMPpreqMinInterval;
1135         if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME,
1136                            mask))
1137                 conf->dot11MeshHWMPnetDiameterTraversalTime =
1138                         nconf->dot11MeshHWMPnetDiameterTraversalTime;
1139         if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_ROOTMODE, mask)) {
1140                 conf->dot11MeshHWMPRootMode = nconf->dot11MeshHWMPRootMode;
1141                 ieee80211_mesh_root_setup(ifmsh);
1142         }
1143         if (_chg_mesh_attr(NL80211_MESHCONF_GATE_ANNOUNCEMENTS, mask)) {
1144                 /* our current gate announcement implementation rides on root
1145                  * announcements, so require this ifmsh to also be a root node
1146                  * */
1147                 if (nconf->dot11MeshGateAnnouncementProtocol &&
1148                     !conf->dot11MeshHWMPRootMode) {
1149                         conf->dot11MeshHWMPRootMode = 1;
1150                         ieee80211_mesh_root_setup(ifmsh);
1151                 }
1152                 conf->dot11MeshGateAnnouncementProtocol =
1153                         nconf->dot11MeshGateAnnouncementProtocol;
1154         }
1155         if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_RANN_INTERVAL, mask)) {
1156                 conf->dot11MeshHWMPRannInterval =
1157                         nconf->dot11MeshHWMPRannInterval;
1158         }
1159         return 0;
1160 }
1161
1162 static int ieee80211_join_mesh(struct wiphy *wiphy, struct net_device *dev,
1163                                const struct mesh_config *conf,
1164                                const struct mesh_setup *setup)
1165 {
1166         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1167         struct ieee80211_if_mesh *ifmsh = &sdata->u.mesh;
1168         int err;
1169
1170         memcpy(&ifmsh->mshcfg, conf, sizeof(struct mesh_config));
1171         err = copy_mesh_setup(ifmsh, setup);
1172         if (err)
1173                 return err;
1174         ieee80211_start_mesh(sdata);
1175
1176         return 0;
1177 }
1178
1179 static int ieee80211_leave_mesh(struct wiphy *wiphy, struct net_device *dev)
1180 {
1181         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1182
1183         ieee80211_stop_mesh(sdata);
1184
1185         return 0;
1186 }
1187 #endif
1188
1189 static int ieee80211_change_bss(struct wiphy *wiphy,
1190                                 struct net_device *dev,
1191                                 struct bss_parameters *params)
1192 {
1193         struct ieee80211_sub_if_data *sdata;
1194         u32 changed = 0;
1195
1196         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1197
1198         if (params->use_cts_prot >= 0) {
1199                 sdata->vif.bss_conf.use_cts_prot = params->use_cts_prot;
1200                 changed |= BSS_CHANGED_ERP_CTS_PROT;
1201         }
1202         if (params->use_short_preamble >= 0) {
1203                 sdata->vif.bss_conf.use_short_preamble =
1204                         params->use_short_preamble;
1205                 changed |= BSS_CHANGED_ERP_PREAMBLE;
1206         }
1207
1208         if (!sdata->vif.bss_conf.use_short_slot &&
1209             sdata->local->hw.conf.channel->band == IEEE80211_BAND_5GHZ) {
1210                 sdata->vif.bss_conf.use_short_slot = true;
1211                 changed |= BSS_CHANGED_ERP_SLOT;
1212         }
1213
1214         if (params->use_short_slot_time >= 0) {
1215                 sdata->vif.bss_conf.use_short_slot =
1216                         params->use_short_slot_time;
1217                 changed |= BSS_CHANGED_ERP_SLOT;
1218         }
1219
1220         if (params->basic_rates) {
1221                 int i, j;
1222                 u32 rates = 0;
1223                 struct ieee80211_local *local = wiphy_priv(wiphy);
1224                 struct ieee80211_supported_band *sband =
1225                         wiphy->bands[local->oper_channel->band];
1226
1227                 for (i = 0; i < params->basic_rates_len; i++) {
1228                         int rate = (params->basic_rates[i] & 0x7f) * 5;
1229                         for (j = 0; j < sband->n_bitrates; j++) {
1230                                 if (sband->bitrates[j].bitrate == rate)
1231                                         rates |= BIT(j);
1232                         }
1233                 }
1234                 sdata->vif.bss_conf.basic_rates = rates;
1235                 changed |= BSS_CHANGED_BASIC_RATES;
1236         }
1237
1238         if (params->ap_isolate >= 0) {
1239                 if (params->ap_isolate)
1240                         sdata->flags |= IEEE80211_SDATA_DONT_BRIDGE_PACKETS;
1241                 else
1242                         sdata->flags &= ~IEEE80211_SDATA_DONT_BRIDGE_PACKETS;
1243         }
1244
1245         if (params->ht_opmode >= 0) {
1246                 sdata->vif.bss_conf.ht_operation_mode =
1247                         (u16) params->ht_opmode;
1248                 changed |= BSS_CHANGED_HT;
1249         }
1250
1251         ieee80211_bss_info_change_notify(sdata, changed);
1252
1253         return 0;
1254 }
1255
1256 static int ieee80211_set_txq_params(struct wiphy *wiphy,
1257                                     struct ieee80211_txq_params *params)
1258 {
1259         struct ieee80211_local *local = wiphy_priv(wiphy);
1260         struct ieee80211_tx_queue_params p;
1261
1262         if (!local->ops->conf_tx)
1263                 return -EOPNOTSUPP;
1264
1265         memset(&p, 0, sizeof(p));
1266         p.aifs = params->aifs;
1267         p.cw_max = params->cwmax;
1268         p.cw_min = params->cwmin;
1269         p.txop = params->txop;
1270
1271         /*
1272          * Setting tx queue params disables u-apsd because it's only
1273          * called in master mode.
1274          */
1275         p.uapsd = false;
1276
1277         if (params->queue >= local->hw.queues)
1278                 return -EINVAL;
1279
1280         local->tx_conf[params->queue] = p;
1281         if (drv_conf_tx(local, params->queue, &p)) {
1282                 wiphy_debug(local->hw.wiphy,
1283                             "failed to set TX queue parameters for queue %d\n",
1284                             params->queue);
1285                 return -EINVAL;
1286         }
1287
1288         return 0;
1289 }
1290
1291 static int ieee80211_set_channel(struct wiphy *wiphy,
1292                                  struct net_device *netdev,
1293                                  struct ieee80211_channel *chan,
1294                                  enum nl80211_channel_type channel_type)
1295 {
1296         struct ieee80211_local *local = wiphy_priv(wiphy);
1297         struct ieee80211_sub_if_data *sdata = NULL;
1298         struct ieee80211_channel *old_oper;
1299         enum nl80211_channel_type old_oper_type;
1300         enum nl80211_channel_type old_vif_oper_type= NL80211_CHAN_NO_HT;
1301
1302         if (netdev)
1303                 sdata = IEEE80211_DEV_TO_SUB_IF(netdev);
1304
1305         switch (ieee80211_get_channel_mode(local, NULL)) {
1306         case CHAN_MODE_HOPPING:
1307                 return -EBUSY;
1308         case CHAN_MODE_FIXED:
1309                 if (local->oper_channel != chan)
1310                         return -EBUSY;
1311                 if (!sdata && local->_oper_channel_type == channel_type)
1312                         return 0;
1313                 break;
1314         case CHAN_MODE_UNDEFINED:
1315                 break;
1316         }
1317
1318         if (sdata)
1319                 old_vif_oper_type = sdata->vif.bss_conf.channel_type;
1320         old_oper_type = local->_oper_channel_type;
1321
1322         if (!ieee80211_set_channel_type(local, sdata, channel_type))
1323                 return -EBUSY;
1324
1325         old_oper = local->oper_channel;
1326         local->oper_channel = chan;
1327
1328         /* Update driver if changes were actually made. */
1329         if ((old_oper != local->oper_channel) ||
1330             (old_oper_type != local->_oper_channel_type))
1331                 ieee80211_hw_config(local, IEEE80211_CONF_CHANGE_CHANNEL);
1332
1333         if ((sdata && sdata->vif.type != NL80211_IFTYPE_MONITOR) &&
1334             old_vif_oper_type != sdata->vif.bss_conf.channel_type)
1335                 ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_HT);
1336
1337         return 0;
1338 }
1339
1340 #ifdef CONFIG_PM
1341 static int ieee80211_suspend(struct wiphy *wiphy,
1342                              struct cfg80211_wowlan *wowlan)
1343 {
1344         return __ieee80211_suspend(wiphy_priv(wiphy), wowlan);
1345 }
1346
1347 static int ieee80211_resume(struct wiphy *wiphy)
1348 {
1349         return __ieee80211_resume(wiphy_priv(wiphy));
1350 }
1351 #else
1352 #define ieee80211_suspend NULL
1353 #define ieee80211_resume NULL
1354 #endif
1355
1356 static int ieee80211_scan(struct wiphy *wiphy,
1357                           struct net_device *dev,
1358                           struct cfg80211_scan_request *req)
1359 {
1360         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1361
1362         switch (ieee80211_vif_type_p2p(&sdata->vif)) {
1363         case NL80211_IFTYPE_STATION:
1364         case NL80211_IFTYPE_ADHOC:
1365         case NL80211_IFTYPE_MESH_POINT:
1366         case NL80211_IFTYPE_P2P_CLIENT:
1367                 break;
1368         case NL80211_IFTYPE_P2P_GO:
1369                 if (sdata->local->ops->hw_scan)
1370                         break;
1371                 /*
1372                  * FIXME: implement NoA while scanning in software,
1373                  * for now fall through to allow scanning only when
1374                  * beaconing hasn't been configured yet
1375                  */
1376         case NL80211_IFTYPE_AP:
1377                 if (sdata->u.ap.beacon)
1378                         return -EOPNOTSUPP;
1379                 break;
1380         default:
1381                 return -EOPNOTSUPP;
1382         }
1383
1384         return ieee80211_request_scan(sdata, req);
1385 }
1386
1387 static int
1388 ieee80211_sched_scan_start(struct wiphy *wiphy,
1389                            struct net_device *dev,
1390                            struct cfg80211_sched_scan_request *req)
1391 {
1392         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1393
1394         if (!sdata->local->ops->sched_scan_start)
1395                 return -EOPNOTSUPP;
1396
1397         return ieee80211_request_sched_scan_start(sdata, req);
1398 }
1399
1400 static int
1401 ieee80211_sched_scan_stop(struct wiphy *wiphy, struct net_device *dev)
1402 {
1403         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1404
1405         if (!sdata->local->ops->sched_scan_stop)
1406                 return -EOPNOTSUPP;
1407
1408         return ieee80211_request_sched_scan_stop(sdata);
1409 }
1410
1411 static int ieee80211_auth(struct wiphy *wiphy, struct net_device *dev,
1412                           struct cfg80211_auth_request *req)
1413 {
1414         return ieee80211_mgd_auth(IEEE80211_DEV_TO_SUB_IF(dev), req);
1415 }
1416
1417 static int ieee80211_assoc(struct wiphy *wiphy, struct net_device *dev,
1418                            struct cfg80211_assoc_request *req)
1419 {
1420         struct ieee80211_local *local = wiphy_priv(wiphy);
1421         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1422
1423         switch (ieee80211_get_channel_mode(local, sdata)) {
1424         case CHAN_MODE_HOPPING:
1425                 return -EBUSY;
1426         case CHAN_MODE_FIXED:
1427                 if (local->oper_channel == req->bss->channel)
1428                         break;
1429                 return -EBUSY;
1430         case CHAN_MODE_UNDEFINED:
1431                 break;
1432         }
1433
1434         return ieee80211_mgd_assoc(IEEE80211_DEV_TO_SUB_IF(dev), req);
1435 }
1436
1437 static int ieee80211_deauth(struct wiphy *wiphy, struct net_device *dev,
1438                             struct cfg80211_deauth_request *req,
1439                             void *cookie)
1440 {
1441         return ieee80211_mgd_deauth(IEEE80211_DEV_TO_SUB_IF(dev),
1442                                     req, cookie);
1443 }
1444
1445 static int ieee80211_disassoc(struct wiphy *wiphy, struct net_device *dev,
1446                               struct cfg80211_disassoc_request *req,
1447                               void *cookie)
1448 {
1449         return ieee80211_mgd_disassoc(IEEE80211_DEV_TO_SUB_IF(dev),
1450                                       req, cookie);
1451 }
1452
1453 static int ieee80211_join_ibss(struct wiphy *wiphy, struct net_device *dev,
1454                                struct cfg80211_ibss_params *params)
1455 {
1456         struct ieee80211_local *local = wiphy_priv(wiphy);
1457         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1458
1459         switch (ieee80211_get_channel_mode(local, sdata)) {
1460         case CHAN_MODE_HOPPING:
1461                 return -EBUSY;
1462         case CHAN_MODE_FIXED:
1463                 if (!params->channel_fixed)
1464                         return -EBUSY;
1465                 if (local->oper_channel == params->channel)
1466                         break;
1467                 return -EBUSY;
1468         case CHAN_MODE_UNDEFINED:
1469                 break;
1470         }
1471
1472         return ieee80211_ibss_join(sdata, params);
1473 }
1474
1475 static int ieee80211_leave_ibss(struct wiphy *wiphy, struct net_device *dev)
1476 {
1477         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1478
1479         return ieee80211_ibss_leave(sdata);
1480 }
1481
1482 static int ieee80211_set_wiphy_params(struct wiphy *wiphy, u32 changed)
1483 {
1484         struct ieee80211_local *local = wiphy_priv(wiphy);
1485         int err;
1486
1487         if (changed & WIPHY_PARAM_FRAG_THRESHOLD) {
1488                 err = drv_set_frag_threshold(local, wiphy->frag_threshold);
1489
1490                 if (err)
1491                         return err;
1492         }
1493
1494         if (changed & WIPHY_PARAM_COVERAGE_CLASS) {
1495                 err = drv_set_coverage_class(local, wiphy->coverage_class);
1496
1497                 if (err)
1498                         return err;
1499         }
1500
1501         if (changed & WIPHY_PARAM_RTS_THRESHOLD) {
1502                 err = drv_set_rts_threshold(local, wiphy->rts_threshold);
1503
1504                 if (err)
1505                         return err;
1506         }
1507
1508         if (changed & WIPHY_PARAM_RETRY_SHORT)
1509                 local->hw.conf.short_frame_max_tx_count = wiphy->retry_short;
1510         if (changed & WIPHY_PARAM_RETRY_LONG)
1511                 local->hw.conf.long_frame_max_tx_count = wiphy->retry_long;
1512         if (changed &
1513             (WIPHY_PARAM_RETRY_SHORT | WIPHY_PARAM_RETRY_LONG))
1514                 ieee80211_hw_config(local, IEEE80211_CONF_CHANGE_RETRY_LIMITS);
1515
1516         return 0;
1517 }
1518
1519 static int ieee80211_set_tx_power(struct wiphy *wiphy,
1520                                   enum nl80211_tx_power_setting type, int mbm)
1521 {
1522         struct ieee80211_local *local = wiphy_priv(wiphy);
1523         struct ieee80211_channel *chan = local->hw.conf.channel;
1524         u32 changes = 0;
1525
1526         switch (type) {
1527         case NL80211_TX_POWER_AUTOMATIC:
1528                 local->user_power_level = -1;
1529                 break;
1530         case NL80211_TX_POWER_LIMITED:
1531                 if (mbm < 0 || (mbm % 100))
1532                         return -EOPNOTSUPP;
1533                 local->user_power_level = MBM_TO_DBM(mbm);
1534                 break;
1535         case NL80211_TX_POWER_FIXED:
1536                 if (mbm < 0 || (mbm % 100))
1537                         return -EOPNOTSUPP;
1538                 /* TODO: move to cfg80211 when it knows the channel */
1539                 if (MBM_TO_DBM(mbm) > chan->max_power)
1540                         return -EINVAL;
1541                 local->user_power_level = MBM_TO_DBM(mbm);
1542                 break;
1543         }
1544
1545         ieee80211_hw_config(local, changes);
1546
1547         return 0;
1548 }
1549
1550 static int ieee80211_get_tx_power(struct wiphy *wiphy, int *dbm)
1551 {
1552         struct ieee80211_local *local = wiphy_priv(wiphy);
1553
1554         *dbm = local->hw.conf.power_level;
1555
1556         return 0;
1557 }
1558
1559 static int ieee80211_set_wds_peer(struct wiphy *wiphy, struct net_device *dev,
1560                                   const u8 *addr)
1561 {
1562         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1563
1564         memcpy(&sdata->u.wds.remote_addr, addr, ETH_ALEN);
1565
1566         return 0;
1567 }
1568
1569 static void ieee80211_rfkill_poll(struct wiphy *wiphy)
1570 {
1571         struct ieee80211_local *local = wiphy_priv(wiphy);
1572
1573         drv_rfkill_poll(local);
1574 }
1575
1576 #ifdef CONFIG_NL80211_TESTMODE
1577 static int ieee80211_testmode_cmd(struct wiphy *wiphy, void *data, int len)
1578 {
1579         struct ieee80211_local *local = wiphy_priv(wiphy);
1580
1581         if (!local->ops->testmode_cmd)
1582                 return -EOPNOTSUPP;
1583
1584         return local->ops->testmode_cmd(&local->hw, data, len);
1585 }
1586
1587 static int ieee80211_testmode_dump(struct wiphy *wiphy,
1588                                    struct sk_buff *skb,
1589                                    struct netlink_callback *cb,
1590                                    void *data, int len)
1591 {
1592         struct ieee80211_local *local = wiphy_priv(wiphy);
1593
1594         if (!local->ops->testmode_dump)
1595                 return -EOPNOTSUPP;
1596
1597         return local->ops->testmode_dump(&local->hw, skb, cb, data, len);
1598 }
1599 #endif
1600
1601 int __ieee80211_request_smps(struct ieee80211_sub_if_data *sdata,
1602                              enum ieee80211_smps_mode smps_mode)
1603 {
1604         const u8 *ap;
1605         enum ieee80211_smps_mode old_req;
1606         int err;
1607
1608         lockdep_assert_held(&sdata->u.mgd.mtx);
1609
1610         old_req = sdata->u.mgd.req_smps;
1611         sdata->u.mgd.req_smps = smps_mode;
1612
1613         if (old_req == smps_mode &&
1614             smps_mode != IEEE80211_SMPS_AUTOMATIC)
1615                 return 0;
1616
1617         /*
1618          * If not associated, or current association is not an HT
1619          * association, there's no need to send an action frame.
1620          */
1621         if (!sdata->u.mgd.associated ||
1622             sdata->vif.bss_conf.channel_type == NL80211_CHAN_NO_HT) {
1623                 mutex_lock(&sdata->local->iflist_mtx);
1624                 ieee80211_recalc_smps(sdata->local);
1625                 mutex_unlock(&sdata->local->iflist_mtx);
1626                 return 0;
1627         }
1628
1629         ap = sdata->u.mgd.associated->bssid;
1630
1631         if (smps_mode == IEEE80211_SMPS_AUTOMATIC) {
1632                 if (sdata->u.mgd.powersave)
1633                         smps_mode = IEEE80211_SMPS_DYNAMIC;
1634                 else
1635                         smps_mode = IEEE80211_SMPS_OFF;
1636         }
1637
1638         /* send SM PS frame to AP */
1639         err = ieee80211_send_smps_action(sdata, smps_mode,
1640                                          ap, ap);
1641         if (err)
1642                 sdata->u.mgd.req_smps = old_req;
1643
1644         return err;
1645 }
1646
1647 static int ieee80211_set_power_mgmt(struct wiphy *wiphy, struct net_device *dev,
1648                                     bool enabled, int timeout)
1649 {
1650         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1651         struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
1652
1653         if (sdata->vif.type != NL80211_IFTYPE_STATION)
1654                 return -EOPNOTSUPP;
1655
1656         if (!(local->hw.flags & IEEE80211_HW_SUPPORTS_PS))
1657                 return -EOPNOTSUPP;
1658
1659         if (enabled == sdata->u.mgd.powersave &&
1660             timeout == local->dynamic_ps_forced_timeout)
1661                 return 0;
1662
1663         sdata->u.mgd.powersave = enabled;
1664         local->dynamic_ps_forced_timeout = timeout;
1665
1666         /* no change, but if automatic follow powersave */
1667         mutex_lock(&sdata->u.mgd.mtx);
1668         __ieee80211_request_smps(sdata, sdata->u.mgd.req_smps);
1669         mutex_unlock(&sdata->u.mgd.mtx);
1670
1671         if (local->hw.flags & IEEE80211_HW_SUPPORTS_DYNAMIC_PS)
1672                 ieee80211_hw_config(local, IEEE80211_CONF_CHANGE_PS);
1673
1674         ieee80211_recalc_ps(local, -1);
1675
1676         return 0;
1677 }
1678
1679 static int ieee80211_set_cqm_rssi_config(struct wiphy *wiphy,
1680                                          struct net_device *dev,
1681                                          s32 rssi_thold, u32 rssi_hyst)
1682 {
1683         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1684         struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
1685         struct ieee80211_vif *vif = &sdata->vif;
1686         struct ieee80211_bss_conf *bss_conf = &vif->bss_conf;
1687
1688         if (rssi_thold == bss_conf->cqm_rssi_thold &&
1689             rssi_hyst == bss_conf->cqm_rssi_hyst)
1690                 return 0;
1691
1692         bss_conf->cqm_rssi_thold = rssi_thold;
1693         bss_conf->cqm_rssi_hyst = rssi_hyst;
1694
1695         if (!(local->hw.flags & IEEE80211_HW_SUPPORTS_CQM_RSSI)) {
1696                 if (sdata->vif.type != NL80211_IFTYPE_STATION)
1697                         return -EOPNOTSUPP;
1698                 return 0;
1699         }
1700
1701         /* tell the driver upon association, unless already associated */
1702         if (sdata->u.mgd.associated)
1703                 ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_CQM);
1704
1705         return 0;
1706 }
1707
1708 static int ieee80211_set_bitrate_mask(struct wiphy *wiphy,
1709                                       struct net_device *dev,
1710                                       const u8 *addr,
1711                                       const struct cfg80211_bitrate_mask *mask)
1712 {
1713         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1714         struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
1715         int i, ret;
1716
1717         if (local->hw.flags & IEEE80211_HW_HAS_RATE_CONTROL) {
1718                 ret = drv_set_bitrate_mask(local, sdata, mask);
1719                 if (ret)
1720                         return ret;
1721         }
1722
1723         for (i = 0; i < IEEE80211_NUM_BANDS; i++)
1724                 sdata->rc_rateidx_mask[i] = mask->control[i].legacy;
1725
1726         return 0;
1727 }
1728
1729 static int ieee80211_remain_on_channel_hw(struct ieee80211_local *local,
1730                                           struct net_device *dev,
1731                                           struct ieee80211_channel *chan,
1732                                           enum nl80211_channel_type chantype,
1733                                           unsigned int duration, u64 *cookie)
1734 {
1735         int ret;
1736         u32 random_cookie;
1737
1738         lockdep_assert_held(&local->mtx);
1739
1740         if (local->hw_roc_cookie)
1741                 return -EBUSY;
1742         /* must be nonzero */
1743         random_cookie = random32() | 1;
1744
1745         *cookie = random_cookie;
1746         local->hw_roc_dev = dev;
1747         local->hw_roc_cookie = random_cookie;
1748         local->hw_roc_channel = chan;
1749         local->hw_roc_channel_type = chantype;
1750         local->hw_roc_duration = duration;
1751         ret = drv_remain_on_channel(local, chan, chantype, duration);
1752         if (ret) {
1753                 local->hw_roc_channel = NULL;
1754                 local->hw_roc_cookie = 0;
1755         }
1756
1757         return ret;
1758 }
1759
1760 static int ieee80211_remain_on_channel(struct wiphy *wiphy,
1761                                        struct net_device *dev,
1762                                        struct ieee80211_channel *chan,
1763                                        enum nl80211_channel_type channel_type,
1764                                        unsigned int duration,
1765                                        u64 *cookie)
1766 {
1767         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1768         struct ieee80211_local *local = sdata->local;
1769
1770         if (local->ops->remain_on_channel) {
1771                 int ret;
1772
1773                 mutex_lock(&local->mtx);
1774                 ret = ieee80211_remain_on_channel_hw(local, dev,
1775                                                      chan, channel_type,
1776                                                      duration, cookie);
1777                 local->hw_roc_for_tx = false;
1778                 mutex_unlock(&local->mtx);
1779
1780                 return ret;
1781         }
1782
1783         return ieee80211_wk_remain_on_channel(sdata, chan, channel_type,
1784                                               duration, cookie);
1785 }
1786
1787 static int ieee80211_cancel_remain_on_channel_hw(struct ieee80211_local *local,
1788                                                  u64 cookie)
1789 {
1790         int ret;
1791
1792         lockdep_assert_held(&local->mtx);
1793
1794         if (local->hw_roc_cookie != cookie)
1795                 return -ENOENT;
1796
1797         ret = drv_cancel_remain_on_channel(local);
1798         if (ret)
1799                 return ret;
1800
1801         local->hw_roc_cookie = 0;
1802         local->hw_roc_channel = NULL;
1803
1804         ieee80211_recalc_idle(local);
1805
1806         return 0;
1807 }
1808
1809 static int ieee80211_cancel_remain_on_channel(struct wiphy *wiphy,
1810                                               struct net_device *dev,
1811                                               u64 cookie)
1812 {
1813         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1814         struct ieee80211_local *local = sdata->local;
1815
1816         if (local->ops->cancel_remain_on_channel) {
1817                 int ret;
1818
1819                 mutex_lock(&local->mtx);
1820                 ret = ieee80211_cancel_remain_on_channel_hw(local, cookie);
1821                 mutex_unlock(&local->mtx);
1822
1823                 return ret;
1824         }
1825
1826         return ieee80211_wk_cancel_remain_on_channel(sdata, cookie);
1827 }
1828
1829 static enum work_done_result
1830 ieee80211_offchan_tx_done(struct ieee80211_work *wk, struct sk_buff *skb)
1831 {
1832         /*
1833          * Use the data embedded in the work struct for reporting
1834          * here so if the driver mangled the SKB before dropping
1835          * it (which is the only way we really should get here)
1836          * then we don't report mangled data.
1837          *
1838          * If there was no wait time, then by the time we get here
1839          * the driver will likely not have reported the status yet,
1840          * so in that case userspace will have to deal with it.
1841          */
1842
1843         if (wk->offchan_tx.wait && wk->offchan_tx.frame)
1844                 cfg80211_mgmt_tx_status(wk->sdata->dev,
1845                                         (unsigned long) wk->offchan_tx.frame,
1846                                         wk->ie, wk->ie_len, false, GFP_KERNEL);
1847
1848         return WORK_DONE_DESTROY;
1849 }
1850
1851 static int ieee80211_mgmt_tx(struct wiphy *wiphy, struct net_device *dev,
1852                              struct ieee80211_channel *chan, bool offchan,
1853                              enum nl80211_channel_type channel_type,
1854                              bool channel_type_valid, unsigned int wait,
1855                              const u8 *buf, size_t len, u64 *cookie)
1856 {
1857         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1858         struct ieee80211_local *local = sdata->local;
1859         struct sk_buff *skb;
1860         struct sta_info *sta;
1861         struct ieee80211_work *wk;
1862         const struct ieee80211_mgmt *mgmt = (void *)buf;
1863         u32 flags = IEEE80211_TX_INTFL_NL80211_FRAME_TX |
1864                     IEEE80211_TX_CTL_REQ_TX_STATUS;
1865         bool is_offchan = false;
1866
1867         /* Check that we are on the requested channel for transmission */
1868         if (chan != local->tmp_channel &&
1869             chan != local->oper_channel)
1870                 is_offchan = true;
1871         if (channel_type_valid &&
1872             (channel_type != local->tmp_channel_type &&
1873              channel_type != local->_oper_channel_type))
1874                 is_offchan = true;
1875
1876         if (chan == local->hw_roc_channel) {
1877                 /* TODO: check channel type? */
1878                 is_offchan = false;
1879                 flags |= IEEE80211_TX_CTL_TX_OFFCHAN;
1880         }
1881
1882         if (is_offchan && !offchan)
1883                 return -EBUSY;
1884
1885         switch (sdata->vif.type) {
1886         case NL80211_IFTYPE_ADHOC:
1887         case NL80211_IFTYPE_AP:
1888         case NL80211_IFTYPE_AP_VLAN:
1889         case NL80211_IFTYPE_P2P_GO:
1890         case NL80211_IFTYPE_MESH_POINT:
1891                 if (!ieee80211_is_action(mgmt->frame_control) ||
1892                     mgmt->u.action.category == WLAN_CATEGORY_PUBLIC)
1893                         break;
1894                 rcu_read_lock();
1895                 sta = sta_info_get(sdata, mgmt->da);
1896                 rcu_read_unlock();
1897                 if (!sta)
1898                         return -ENOLINK;
1899                 break;
1900         case NL80211_IFTYPE_STATION:
1901         case NL80211_IFTYPE_P2P_CLIENT:
1902                 break;
1903         default:
1904                 return -EOPNOTSUPP;
1905         }
1906
1907         skb = dev_alloc_skb(local->hw.extra_tx_headroom + len);
1908         if (!skb)
1909                 return -ENOMEM;
1910         skb_reserve(skb, local->hw.extra_tx_headroom);
1911
1912         memcpy(skb_put(skb, len), buf, len);
1913
1914         IEEE80211_SKB_CB(skb)->flags = flags;
1915
1916         skb->dev = sdata->dev;
1917
1918         *cookie = (unsigned long) skb;
1919
1920         if (is_offchan && local->ops->remain_on_channel) {
1921                 unsigned int duration;
1922                 int ret;
1923
1924                 mutex_lock(&local->mtx);
1925                 /*
1926                  * If the duration is zero, then the driver
1927                  * wouldn't actually do anything. Set it to
1928                  * 100 for now.
1929                  *
1930                  * TODO: cancel the off-channel operation
1931                  *       when we get the SKB's TX status and
1932                  *       the wait time was zero before.
1933                  */
1934                 duration = 100;
1935                 if (wait)
1936                         duration = wait;
1937                 ret = ieee80211_remain_on_channel_hw(local, dev, chan,
1938                                                      channel_type,
1939                                                      duration, cookie);
1940                 if (ret) {
1941                         kfree_skb(skb);
1942                         mutex_unlock(&local->mtx);
1943                         return ret;
1944                 }
1945
1946                 local->hw_roc_for_tx = true;
1947                 local->hw_roc_duration = wait;
1948
1949                 /*
1950                  * queue up frame for transmission after
1951                  * ieee80211_ready_on_channel call
1952                  */
1953
1954                 /* modify cookie to prevent API mismatches */
1955                 *cookie ^= 2;
1956                 IEEE80211_SKB_CB(skb)->flags |= IEEE80211_TX_CTL_TX_OFFCHAN;
1957                 local->hw_roc_skb = skb;
1958                 local->hw_roc_skb_for_status = skb;
1959                 mutex_unlock(&local->mtx);
1960
1961                 return 0;
1962         }
1963
1964         /*
1965          * Can transmit right away if the channel was the
1966          * right one and there's no wait involved... If a
1967          * wait is involved, we might otherwise not be on
1968          * the right channel for long enough!
1969          */
1970         if (!is_offchan && !wait && !sdata->vif.bss_conf.idle) {
1971                 ieee80211_tx_skb(sdata, skb);
1972                 return 0;
1973         }
1974
1975         wk = kzalloc(sizeof(*wk) + len, GFP_KERNEL);
1976         if (!wk) {
1977                 kfree_skb(skb);
1978                 return -ENOMEM;
1979         }
1980
1981         wk->type = IEEE80211_WORK_OFFCHANNEL_TX;
1982         wk->chan = chan;
1983         wk->chan_type = channel_type;
1984         wk->sdata = sdata;
1985         wk->done = ieee80211_offchan_tx_done;
1986         wk->offchan_tx.frame = skb;
1987         wk->offchan_tx.wait = wait;
1988         wk->ie_len = len;
1989         memcpy(wk->ie, buf, len);
1990
1991         ieee80211_add_work(wk);
1992         return 0;
1993 }
1994
1995 static int ieee80211_mgmt_tx_cancel_wait(struct wiphy *wiphy,
1996                                          struct net_device *dev,
1997                                          u64 cookie)
1998 {
1999         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2000         struct ieee80211_local *local = sdata->local;
2001         struct ieee80211_work *wk;
2002         int ret = -ENOENT;
2003
2004         mutex_lock(&local->mtx);
2005
2006         if (local->ops->cancel_remain_on_channel) {
2007                 cookie ^= 2;
2008                 ret = ieee80211_cancel_remain_on_channel_hw(local, cookie);
2009
2010                 if (ret == 0) {
2011                         kfree_skb(local->hw_roc_skb);
2012                         local->hw_roc_skb = NULL;
2013                         local->hw_roc_skb_for_status = NULL;
2014                 }
2015
2016                 mutex_unlock(&local->mtx);
2017
2018                 return ret;
2019         }
2020
2021         list_for_each_entry(wk, &local->work_list, list) {
2022                 if (wk->sdata != sdata)
2023                         continue;
2024
2025                 if (wk->type != IEEE80211_WORK_OFFCHANNEL_TX)
2026                         continue;
2027
2028                 if (cookie != (unsigned long) wk->offchan_tx.frame)
2029                         continue;
2030
2031                 wk->timeout = jiffies;
2032
2033                 ieee80211_queue_work(&local->hw, &local->work_work);
2034                 ret = 0;
2035                 break;
2036         }
2037         mutex_unlock(&local->mtx);
2038
2039         return ret;
2040 }
2041
2042 static void ieee80211_mgmt_frame_register(struct wiphy *wiphy,
2043                                           struct net_device *dev,
2044                                           u16 frame_type, bool reg)
2045 {
2046         struct ieee80211_local *local = wiphy_priv(wiphy);
2047
2048         if (frame_type != (IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_PROBE_REQ))
2049                 return;
2050
2051         if (reg)
2052                 local->probe_req_reg++;
2053         else
2054                 local->probe_req_reg--;
2055
2056         ieee80211_queue_work(&local->hw, &local->reconfig_filter);
2057 }
2058
2059 static int ieee80211_set_antenna(struct wiphy *wiphy, u32 tx_ant, u32 rx_ant)
2060 {
2061         struct ieee80211_local *local = wiphy_priv(wiphy);
2062
2063         if (local->started)
2064                 return -EOPNOTSUPP;
2065
2066         return drv_set_antenna(local, tx_ant, rx_ant);
2067 }
2068
2069 static int ieee80211_get_antenna(struct wiphy *wiphy, u32 *tx_ant, u32 *rx_ant)
2070 {
2071         struct ieee80211_local *local = wiphy_priv(wiphy);
2072
2073         return drv_get_antenna(local, tx_ant, rx_ant);
2074 }
2075
2076 static int ieee80211_set_ringparam(struct wiphy *wiphy, u32 tx, u32 rx)
2077 {
2078         struct ieee80211_local *local = wiphy_priv(wiphy);
2079
2080         return drv_set_ringparam(local, tx, rx);
2081 }
2082
2083 static void ieee80211_get_ringparam(struct wiphy *wiphy,
2084                                     u32 *tx, u32 *tx_max, u32 *rx, u32 *rx_max)
2085 {
2086         struct ieee80211_local *local = wiphy_priv(wiphy);
2087
2088         drv_get_ringparam(local, tx, tx_max, rx, rx_max);
2089 }
2090
2091 static int ieee80211_set_rekey_data(struct wiphy *wiphy,
2092                                     struct net_device *dev,
2093                                     struct cfg80211_gtk_rekey_data *data)
2094 {
2095         struct ieee80211_local *local = wiphy_priv(wiphy);
2096         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2097
2098         if (!local->ops->set_rekey_data)
2099                 return -EOPNOTSUPP;
2100
2101         drv_set_rekey_data(local, sdata, data);
2102
2103         return 0;
2104 }
2105
2106 struct cfg80211_ops mac80211_config_ops = {
2107         .add_virtual_intf = ieee80211_add_iface,
2108         .del_virtual_intf = ieee80211_del_iface,
2109         .change_virtual_intf = ieee80211_change_iface,
2110         .add_key = ieee80211_add_key,
2111         .del_key = ieee80211_del_key,
2112         .get_key = ieee80211_get_key,
2113         .set_default_key = ieee80211_config_default_key,
2114         .set_default_mgmt_key = ieee80211_config_default_mgmt_key,
2115         .add_beacon = ieee80211_add_beacon,
2116         .set_beacon = ieee80211_set_beacon,
2117         .del_beacon = ieee80211_del_beacon,
2118         .add_station = ieee80211_add_station,
2119         .del_station = ieee80211_del_station,
2120         .change_station = ieee80211_change_station,
2121         .get_station = ieee80211_get_station,
2122         .dump_station = ieee80211_dump_station,
2123         .dump_survey = ieee80211_dump_survey,
2124 #ifdef CONFIG_MAC80211_MESH
2125         .add_mpath = ieee80211_add_mpath,
2126         .del_mpath = ieee80211_del_mpath,
2127         .change_mpath = ieee80211_change_mpath,
2128         .get_mpath = ieee80211_get_mpath,
2129         .dump_mpath = ieee80211_dump_mpath,
2130         .update_mesh_config = ieee80211_update_mesh_config,
2131         .get_mesh_config = ieee80211_get_mesh_config,
2132         .join_mesh = ieee80211_join_mesh,
2133         .leave_mesh = ieee80211_leave_mesh,
2134 #endif
2135         .change_bss = ieee80211_change_bss,
2136         .set_txq_params = ieee80211_set_txq_params,
2137         .set_channel = ieee80211_set_channel,
2138         .suspend = ieee80211_suspend,
2139         .resume = ieee80211_resume,
2140         .scan = ieee80211_scan,
2141         .sched_scan_start = ieee80211_sched_scan_start,
2142         .sched_scan_stop = ieee80211_sched_scan_stop,
2143         .auth = ieee80211_auth,
2144         .assoc = ieee80211_assoc,
2145         .deauth = ieee80211_deauth,
2146         .disassoc = ieee80211_disassoc,
2147         .join_ibss = ieee80211_join_ibss,
2148         .leave_ibss = ieee80211_leave_ibss,
2149         .set_wiphy_params = ieee80211_set_wiphy_params,
2150         .set_tx_power = ieee80211_set_tx_power,
2151         .get_tx_power = ieee80211_get_tx_power,
2152         .set_wds_peer = ieee80211_set_wds_peer,
2153         .rfkill_poll = ieee80211_rfkill_poll,
2154         CFG80211_TESTMODE_CMD(ieee80211_testmode_cmd)
2155         CFG80211_TESTMODE_DUMP(ieee80211_testmode_dump)
2156         .set_power_mgmt = ieee80211_set_power_mgmt,
2157         .set_bitrate_mask = ieee80211_set_bitrate_mask,
2158         .remain_on_channel = ieee80211_remain_on_channel,
2159         .cancel_remain_on_channel = ieee80211_cancel_remain_on_channel,
2160         .mgmt_tx = ieee80211_mgmt_tx,
2161         .mgmt_tx_cancel_wait = ieee80211_mgmt_tx_cancel_wait,
2162         .set_cqm_rssi_config = ieee80211_set_cqm_rssi_config,
2163         .mgmt_frame_register = ieee80211_mgmt_frame_register,
2164         .set_antenna = ieee80211_set_antenna,
2165         .get_antenna = ieee80211_get_antenna,
2166         .set_ringparam = ieee80211_set_ringparam,
2167         .get_ringparam = ieee80211_get_ringparam,
2168         .set_rekey_data = ieee80211_set_rekey_data,
2169 };