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_assign_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 static void ieee80211_config_ap_ssid(struct ieee80211_sub_if_data *sdata,
 459                                      struct beacon_parameters *params)
 460 {
 461         struct ieee80211_bss_conf *bss_conf = &sdata->vif.bss_conf;
 462
 463         bss_conf->ssid_len = params->ssid_len;
 464
 465         if (params->ssid_len)
 466                 memcpy(bss_conf->ssid, params->ssid, params->ssid_len);
 467
 468         bss_conf->hidden_ssid =
 469                 (params->hidden_ssid != NL80211_HIDDEN_SSID_NOT_IN_USE);
 470 }
 471
 472 /*
 473  * This handles both adding a beacon and setting new beacon info
 474  */
 475 static int ieee80211_config_beacon(struct ieee80211_sub_if_data *sdata,
 476                                    struct beacon_parameters *params)
 477 {
 478         struct beacon_data *new, *old;
 479         int new_head_len, new_tail_len;
 480         int size;
 481         int err = -EINVAL;
 482
 483         old = rtnl_dereference(sdata->u.ap.beacon);
 484
 485         /* head must not be zero-length */
 486         if (params->head && !params->head_len)
 487                 return -EINVAL;
 488
 489         /*
 490          * This is a kludge. beacon interval should really be part
 491          * of the beacon information.
 492          */
 493         if (params->interval &&
 494             (sdata->vif.bss_conf.beacon_int != params->interval)) {
 495                 sdata->vif.bss_conf.beacon_int = params->interval;
 496                 ieee80211_bss_info_change_notify(sdata,
 497                                                  BSS_CHANGED_BEACON_INT);
 498         }
 499
 500         /* Need to have a beacon head if we don't have one yet */
 501         if (!params->head && !old)
 502                 return err;
 503
 504         /* sorry, no way to start beaconing without dtim period */
 505         if (!params->dtim_period && !old)
 506                 return err;
 507
 508         /* new or old head? */
 509         if (params->head)
 510                 new_head_len = params->head_len;
 511         else
 512                 new_head_len = old->head_len;
 513
 514         /* new or old tail? */
 515         if (params->tail || !old)
 516                 /* params->tail_len will be zero for !params->tail */
 517                 new_tail_len = params->tail_len;
 518         else
 519                 new_tail_len = old->tail_len;
 520
 521         size = sizeof(*new) + new_head_len + new_tail_len;
 522
 523         new = kzalloc(size, GFP_KERNEL);
 524         if (!new)
 525                 return -ENOMEM;
 526
 527         /* start filling the new info now */
 528
 529         /* new or old dtim period? */
 530         if (params->dtim_period)
 531                 new->dtim_period = params->dtim_period;
 532         else
 533                 new->dtim_period = old->dtim_period;
 534
 535         /*
 536          * pointers go into the block we allocated,
 537          * memory is | beacon_data | head | tail |
 538          */
 539         new->head = ((u8 *) new) + sizeof(*new);
 540         new->tail = new->head + new_head_len;
 541         new->head_len = new_head_len;
 542         new->tail_len = new_tail_len;
 543
 544         /* copy in head */
 545         if (params->head)
 546                 memcpy(new->head, params->head, new_head_len);
 547         else
 548                 memcpy(new->head, old->head, new_head_len);
 549
 550         /* copy in optional tail */
 551         if (params->tail)
 552                 memcpy(new->tail, params->tail, new_tail_len);
 553         else
 554                 if (old)
 555                         memcpy(new->tail, old->tail, new_tail_len);
 556
 557         sdata->vif.bss_conf.dtim_period = new->dtim_period;
 558
 559         rcu_assign_pointer(sdata->u.ap.beacon, new);
 560
 561         synchronize_rcu();
 562
 563         kfree(old);
 564
 565         ieee80211_config_ap_ssid(sdata, params);
 566
 567         ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_BEACON_ENABLED |
 568                                                 BSS_CHANGED_BEACON |
 569                                                 BSS_CHANGED_SSID);
 570         return 0;
 571 }
 572
 573 static int ieee80211_add_beacon(struct wiphy *wiphy, struct net_device *dev,
 574                                 struct beacon_parameters *params)
 575 {
 576         struct ieee80211_sub_if_data *sdata;
 577         struct beacon_data *old;
 578
 579         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 580
 581         old = rtnl_dereference(sdata->u.ap.beacon);
 582         if (old)
 583                 return -EALREADY;
 584
 585         return ieee80211_config_beacon(sdata, params);
 586 }
 587
 588 static int ieee80211_set_beacon(struct wiphy *wiphy, struct net_device *dev,
 589                                 struct beacon_parameters *params)
 590 {
 591         struct ieee80211_sub_if_data *sdata;
 592         struct beacon_data *old;
 593
 594         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 595
 596         old = rtnl_dereference(sdata->u.ap.beacon);
 597         if (!old)
 598                 return -ENOENT;
 599
 600         return ieee80211_config_beacon(sdata, params);
 601 }
 602
 603 static int ieee80211_del_beacon(struct wiphy *wiphy, struct net_device *dev)
 604 {
 605         struct ieee80211_sub_if_data *sdata;
 606         struct beacon_data *old;
 607
 608         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 609
 610         old = rtnl_dereference(sdata->u.ap.beacon);
 611         if (!old)
 612                 return -ENOENT;
 613
 614         rcu_assign_pointer(sdata->u.ap.beacon, NULL);
 615         synchronize_rcu();
 616         kfree(old);
 617
 618         ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_BEACON_ENABLED);
 619         return 0;
 620 }
 621
 622 /* Layer 2 Update frame (802.2 Type 1 LLC XID Update response) */
 623 struct iapp_layer2_update {
 624         u8 da[ETH_ALEN];        /* broadcast */
 625         u8 sa[ETH_ALEN];        /* STA addr */
 626         __be16 len;             /* 6 */
 627         u8 dsap;                /* 0 */
 628         u8 ssap;                /* 0 */
 629         u8 control;
 630         u8 xid_info[3];
 631 } __packed;
 632
 633 static void ieee80211_send_layer2_update(struct sta_info *sta)
 634 {
 635         struct iapp_layer2_update *msg;
 636         struct sk_buff *skb;
 637
 638         /* Send Level 2 Update Frame to update forwarding tables in layer 2
 639          * bridge devices */
 640
 641         skb = dev_alloc_skb(sizeof(*msg));
 642         if (!skb)
 643                 return;
 644         msg = (struct iapp_layer2_update *)skb_put(skb, sizeof(*msg));
 645
 646         /* 802.2 Type 1 Logical Link Control (LLC) Exchange Identifier (XID)
 647          * Update response frame; IEEE Std 802.2-1998, 5.4.1.2.1 */
 648
 649         memset(msg->da, 0xff, ETH_ALEN);
 650         memcpy(msg->sa, sta->sta.addr, ETH_ALEN);
 651         msg->len = htons(6);
 652         msg->dsap = 0;
 653         msg->ssap = 0x01;       /* NULL LSAP, CR Bit: Response */
 654         msg->control = 0xaf;    /* XID response lsb.1111F101.
 655                                  * F=0 (no poll command; unsolicited frame) */
 656         msg->xid_info[0] = 0x81;        /* XID format identifier */
 657         msg->xid_info[1] = 1;   /* LLC types/classes: Type 1 LLC */
 658         msg->xid_info[2] = 0;   /* XID sender's receive window size (RW) */
 659
 660         skb->dev = sta->sdata->dev;
 661         skb->protocol = eth_type_trans(skb, sta->sdata->dev);
 662         memset(skb->cb, 0, sizeof(skb->cb));
 663         netif_rx_ni(skb);
 664 }
 665
 666 static void sta_apply_parameters(struct ieee80211_local *local,
 667                                  struct sta_info *sta,
 668                                  struct station_parameters *params)
 669 {
 670         unsigned long flags;
 671         u32 rates;
 672         int i, j;
 673         struct ieee80211_supported_band *sband;
 674         struct ieee80211_sub_if_data *sdata = sta->sdata;
 675         u32 mask, set;
 676
 677         sband = local->hw.wiphy->bands[local->oper_channel->band];
 678
 679         spin_lock_irqsave(&sta->flaglock, flags);
 680         mask = params->sta_flags_mask;
 681         set = params->sta_flags_set;
 682
 683         if (mask & BIT(NL80211_STA_FLAG_AUTHORIZED)) {
 684                 sta->flags &= ~WLAN_STA_AUTHORIZED;
 685                 if (set & BIT(NL80211_STA_FLAG_AUTHORIZED))
 686                         sta->flags |= WLAN_STA_AUTHORIZED;
 687         }
 688
 689         if (mask & BIT(NL80211_STA_FLAG_SHORT_PREAMBLE)) {
 690                 sta->flags &= ~WLAN_STA_SHORT_PREAMBLE;
 691                 if (set & BIT(NL80211_STA_FLAG_SHORT_PREAMBLE))
 692                         sta->flags |= WLAN_STA_SHORT_PREAMBLE;
 693         }
 694
 695         if (mask & BIT(NL80211_STA_FLAG_WME)) {
 696                 sta->flags &= ~WLAN_STA_WME;
 697                 sta->sta.wme = false;
 698                 if (set & BIT(NL80211_STA_FLAG_WME)) {
 699                         sta->flags |= WLAN_STA_WME;
 700                         sta->sta.wme = true;
 701                 }
 702         }
 703
 704         if (mask & BIT(NL80211_STA_FLAG_MFP)) {
 705                 sta->flags &= ~WLAN_STA_MFP;
 706                 if (set & BIT(NL80211_STA_FLAG_MFP))
 707                         sta->flags |= WLAN_STA_MFP;
 708         }
 709
 710         if (mask & BIT(NL80211_STA_FLAG_AUTHENTICATED)) {
 711                 sta->flags &= ~WLAN_STA_AUTH;
 712                 if (set & BIT(NL80211_STA_FLAG_AUTHENTICATED))
 713                         sta->flags |= WLAN_STA_AUTH;
 714         }
 715         spin_unlock_irqrestore(&sta->flaglock, flags);
 716
 717         sta->sta.uapsd_queues = params->uapsd_queues;
 718         sta->sta.max_sp = params->max_sp;
 719
 720         /*
 721          * cfg80211 validates this (1-2007) and allows setting the AID
 722          * only when creating a new station entry
 723          */
 724         if (params->aid)
 725                 sta->sta.aid = params->aid;
 726
 727         /*
 728          * FIXME: updating the following information is racy when this
 729          *        function is called from ieee80211_change_station().
 730          *        However, all this information should be static so
 731          *        maybe we should just reject attemps to change it.
 732          */
 733
 734         if (params->listen_interval >= 0)
 735                 sta->listen_interval = params->listen_interval;
 736
 737         if (params->supported_rates) {
 738                 rates = 0;
 739
 740                 for (i = 0; i < params->supported_rates_len; i++) {
 741                         int rate = (params->supported_rates[i] & 0x7f) * 5;
 742                         for (j = 0; j < sband->n_bitrates; j++) {
 743                                 if (sband->bitrates[j].bitrate == rate)
 744                                         rates |= BIT(j);
 745                         }
 746                 }
 747                 sta->sta.supp_rates[local->oper_channel->band] = rates;
 748         }
 749
 750         if (params->ht_capa)
 751                 ieee80211_ht_cap_ie_to_sta_ht_cap(sband,
 752                                                   params->ht_capa,
 753                                                   &sta->sta.ht_cap);
 754
 755         if (ieee80211_vif_is_mesh(&sdata->vif)) {
 756 #ifdef CONFIG_MAC80211_MESH
 757                 if (sdata->u.mesh.security & IEEE80211_MESH_SEC_SECURED)
 758                         switch (params->plink_state) {
 759                         case NL80211_PLINK_LISTEN:
 760                         case NL80211_PLINK_ESTAB:
 761                         case NL80211_PLINK_BLOCKED:
 762                                 sta->plink_state = params->plink_state;
 763                                 break;
 764                         default:
 765                                 /*  nothing  */
 766                                 break;
 767                         }
 768                 else
 769                         switch (params->plink_action) {
 770                         case PLINK_ACTION_OPEN:
 771                                 mesh_plink_open(sta);
 772                                 break;
 773                         case PLINK_ACTION_BLOCK:
 774                                 mesh_plink_block(sta);
 775                                 break;
 776                         }
 777 #endif
 778         }
 779 }
 780
 781 static int ieee80211_add_station(struct wiphy *wiphy, struct net_device *dev,
 782                                  u8 *mac, struct station_parameters *params)
 783 {
 784         struct ieee80211_local *local = wiphy_priv(wiphy);
 785         struct sta_info *sta;
 786         struct ieee80211_sub_if_data *sdata;
 787         int err;
 788         int layer2_update;
 789
 790         if (params->vlan) {
 791                 sdata = IEEE80211_DEV_TO_SUB_IF(params->vlan);
 792
 793                 if (sdata->vif.type != NL80211_IFTYPE_AP_VLAN &&
 794                     sdata->vif.type != NL80211_IFTYPE_AP)
 795                         return -EINVAL;
 796         } else
 797                 sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 798
 799         if (compare_ether_addr(mac, sdata->vif.addr) == 0)
 800                 return -EINVAL;
 801
 802         if (is_multicast_ether_addr(mac))
 803                 return -EINVAL;
 804
 805         sta = sta_info_alloc(sdata, mac, GFP_KERNEL);
 806         if (!sta)
 807                 return -ENOMEM;
 808
 809         sta->flags = WLAN_STA_AUTH | WLAN_STA_ASSOC;
 810
 811         sta_apply_parameters(local, sta, params);
 812
 813         rate_control_rate_init(sta);
 814
 815         layer2_update = sdata->vif.type == NL80211_IFTYPE_AP_VLAN ||
 816                 sdata->vif.type == NL80211_IFTYPE_AP;
 817
 818         err = sta_info_insert_rcu(sta);
 819         if (err) {
 820                 rcu_read_unlock();
 821                 return err;
 822         }
 823
 824         if (layer2_update)
 825                 ieee80211_send_layer2_update(sta);
 826
 827         rcu_read_unlock();
 828
 829         return 0;
 830 }
 831
 832 static int ieee80211_del_station(struct wiphy *wiphy, struct net_device *dev,
 833                                  u8 *mac)
 834 {
 835         struct ieee80211_local *local = wiphy_priv(wiphy);
 836         struct ieee80211_sub_if_data *sdata;
 837
 838         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 839
 840         if (mac)
 841                 return sta_info_destroy_addr_bss(sdata, mac);
 842
 843         sta_info_flush(local, sdata);
 844         return 0;
 845 }
 846
 847 static int ieee80211_change_station(struct wiphy *wiphy,
 848                                     struct net_device *dev,
 849                                     u8 *mac,
 850                                     struct station_parameters *params)
 851 {
 852         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 853         struct ieee80211_local *local = wiphy_priv(wiphy);
 854         struct sta_info *sta;
 855         struct ieee80211_sub_if_data *vlansdata;
 856
 857         rcu_read_lock();
 858
 859         sta = sta_info_get_bss(sdata, mac);
 860         if (!sta) {
 861                 rcu_read_unlock();
 862                 return -ENOENT;
 863         }
 864
 865         if (params->vlan && params->vlan != sta->sdata->dev) {
 866                 vlansdata = IEEE80211_DEV_TO_SUB_IF(params->vlan);
 867
 868                 if (vlansdata->vif.type != NL80211_IFTYPE_AP_VLAN &&
 869                     vlansdata->vif.type != NL80211_IFTYPE_AP) {
 870                         rcu_read_unlock();
 871                         return -EINVAL;
 872                 }
 873
 874                 if (params->vlan->ieee80211_ptr->use_4addr) {
 875                         if (vlansdata->u.vlan.sta) {
 876                                 rcu_read_unlock();
 877                                 return -EBUSY;
 878                         }
 879
 880                         rcu_assign_pointer(vlansdata->u.vlan.sta, sta);
 881                 }
 882
 883                 sta->sdata = vlansdata;
 884                 ieee80211_send_layer2_update(sta);
 885         }
 886
 887         sta_apply_parameters(local, sta, params);
 888
 889         rcu_read_unlock();
 890
 891         if (sdata->vif.type == NL80211_IFTYPE_STATION &&
 892             params->sta_flags_mask & BIT(NL80211_STA_FLAG_AUTHORIZED))
 893                 ieee80211_recalc_ps(local, -1);
 894
 895         return 0;
 896 }
 897
 898 #ifdef CONFIG_MAC80211_MESH
 899 static int ieee80211_add_mpath(struct wiphy *wiphy, struct net_device *dev,
 900                                  u8 *dst, u8 *next_hop)
 901 {
 902         struct ieee80211_sub_if_data *sdata;
 903         struct mesh_path *mpath;
 904         struct sta_info *sta;
 905         int err;
 906
 907         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 908
 909         rcu_read_lock();
 910         sta = sta_info_get(sdata, next_hop);
 911         if (!sta) {
 912                 rcu_read_unlock();
 913                 return -ENOENT;
 914         }
 915
 916         err = mesh_path_add(dst, sdata);
 917         if (err) {
 918                 rcu_read_unlock();
 919                 return err;
 920         }
 921
 922         mpath = mesh_path_lookup(dst, sdata);
 923         if (!mpath) {
 924                 rcu_read_unlock();
 925                 return -ENXIO;
 926         }
 927         mesh_path_fix_nexthop(mpath, sta);
 928
 929         rcu_read_unlock();
 930         return 0;
 931 }
 932
 933 static int ieee80211_del_mpath(struct wiphy *wiphy, struct net_device *dev,
 934                                  u8 *dst)
 935 {
 936         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 937
 938         if (dst)
 939                 return mesh_path_del(dst, sdata);
 940
 941         mesh_path_flush_by_iface(sdata);
 942         return 0;
 943 }
 944
 945 static int ieee80211_change_mpath(struct wiphy *wiphy,
 946                                     struct net_device *dev,
 947                                     u8 *dst, u8 *next_hop)
 948 {
 949         struct ieee80211_sub_if_data *sdata;
 950         struct mesh_path *mpath;
 951         struct sta_info *sta;
 952
 953         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 954
 955         rcu_read_lock();
 956
 957         sta = sta_info_get(sdata, next_hop);
 958         if (!sta) {
 959                 rcu_read_unlock();
 960                 return -ENOENT;
 961         }
 962
 963         mpath = mesh_path_lookup(dst, sdata);
 964         if (!mpath) {
 965                 rcu_read_unlock();
 966                 return -ENOENT;
 967         }
 968
 969         mesh_path_fix_nexthop(mpath, sta);
 970
 971         rcu_read_unlock();
 972         return 0;
 973 }
 974
 975 static void mpath_set_pinfo(struct mesh_path *mpath, u8 *next_hop,
 976                             struct mpath_info *pinfo)
 977 {
 978         struct sta_info *next_hop_sta = rcu_dereference(mpath->next_hop);
 979
 980         if (next_hop_sta)
 981                 memcpy(next_hop, next_hop_sta->sta.addr, ETH_ALEN);
 982         else
 983                 memset(next_hop, 0, ETH_ALEN);
 984
 985         pinfo->generation = mesh_paths_generation;
 986
 987         pinfo->filled = MPATH_INFO_FRAME_QLEN |
 988                         MPATH_INFO_SN |
 989                         MPATH_INFO_METRIC |
 990                         MPATH_INFO_EXPTIME |
 991                         MPATH_INFO_DISCOVERY_TIMEOUT |
 992                         MPATH_INFO_DISCOVERY_RETRIES |
 993                         MPATH_INFO_FLAGS;
 994
 995         pinfo->frame_qlen = mpath->frame_queue.qlen;
 996         pinfo->sn = mpath->sn;
 997         pinfo->metric = mpath->metric;
 998         if (time_before(jiffies, mpath->exp_time))
 999                 pinfo->exptime = jiffies_to_msecs(mpath->exp_time - jiffies);
1000         pinfo->discovery_timeout =
1001                         jiffies_to_msecs(mpath->discovery_timeout);
1002         pinfo->discovery_retries = mpath->discovery_retries;
1003         pinfo->flags = 0;
1004         if (mpath->flags & MESH_PATH_ACTIVE)
1005                 pinfo->flags |= NL80211_MPATH_FLAG_ACTIVE;
1006         if (mpath->flags & MESH_PATH_RESOLVING)
1007                 pinfo->flags |= NL80211_MPATH_FLAG_RESOLVING;
1008         if (mpath->flags & MESH_PATH_SN_VALID)
1009                 pinfo->flags |= NL80211_MPATH_FLAG_SN_VALID;
1010         if (mpath->flags & MESH_PATH_FIXED)
1011                 pinfo->flags |= NL80211_MPATH_FLAG_FIXED;
1012         if (mpath->flags & MESH_PATH_RESOLVING)
1013                 pinfo->flags |= NL80211_MPATH_FLAG_RESOLVING;
1014
1015         pinfo->flags = mpath->flags;
1016 }
1017
1018 static int ieee80211_get_mpath(struct wiphy *wiphy, struct net_device *dev,
1019                                u8 *dst, u8 *next_hop, struct mpath_info *pinfo)
1020
1021 {
1022         struct ieee80211_sub_if_data *sdata;
1023         struct mesh_path *mpath;
1024
1025         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1026
1027         rcu_read_lock();
1028         mpath = mesh_path_lookup(dst, sdata);
1029         if (!mpath) {
1030                 rcu_read_unlock();
1031                 return -ENOENT;
1032         }
1033         memcpy(dst, mpath->dst, ETH_ALEN);
1034         mpath_set_pinfo(mpath, next_hop, pinfo);
1035         rcu_read_unlock();
1036         return 0;
1037 }
1038
1039 static int ieee80211_dump_mpath(struct wiphy *wiphy, struct net_device *dev,
1040                                  int idx, u8 *dst, u8 *next_hop,
1041                                  struct mpath_info *pinfo)
1042 {
1043         struct ieee80211_sub_if_data *sdata;
1044         struct mesh_path *mpath;
1045
1046         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1047
1048         rcu_read_lock();
1049         mpath = mesh_path_lookup_by_idx(idx, sdata);
1050         if (!mpath) {
1051                 rcu_read_unlock();
1052                 return -ENOENT;
1053         }
1054         memcpy(dst, mpath->dst, ETH_ALEN);
1055         mpath_set_pinfo(mpath, next_hop, pinfo);
1056         rcu_read_unlock();
1057         return 0;
1058 }
1059
1060 static int ieee80211_get_mesh_config(struct wiphy *wiphy,
1061                                 struct net_device *dev,
1062                                 struct mesh_config *conf)
1063 {
1064         struct ieee80211_sub_if_data *sdata;
1065         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1066
1067         memcpy(conf, &(sdata->u.mesh.mshcfg), sizeof(struct mesh_config));
1068         return 0;
1069 }
1070
1071 static inline bool _chg_mesh_attr(enum nl80211_meshconf_params parm, u32 mask)
1072 {
1073         return (mask >> (parm-1)) & 0x1;
1074 }
1075
1076 static int copy_mesh_setup(struct ieee80211_if_mesh *ifmsh,
1077                 const struct mesh_setup *setup)
1078 {
1079         u8 *new_ie;
1080         const u8 *old_ie;
1081
1082         /* allocate information elements */
1083         new_ie = NULL;
1084         old_ie = ifmsh->ie;
1085
1086         if (setup->ie_len) {
1087                 new_ie = kmemdup(setup->ie, setup->ie_len,
1088                                 GFP_KERNEL);
1089                 if (!new_ie)
1090                         return -ENOMEM;
1091         }
1092         ifmsh->ie_len = setup->ie_len;
1093         ifmsh->ie = new_ie;
1094         kfree(old_ie);
1095
1096         /* now copy the rest of the setup parameters */
1097         ifmsh->mesh_id_len = setup->mesh_id_len;
1098         memcpy(ifmsh->mesh_id, setup->mesh_id, ifmsh->mesh_id_len);
1099         ifmsh->mesh_pp_id = setup->path_sel_proto;
1100         ifmsh->mesh_pm_id = setup->path_metric;
1101         ifmsh->security = IEEE80211_MESH_SEC_NONE;
1102         if (setup->is_authenticated)
1103                 ifmsh->security |= IEEE80211_MESH_SEC_AUTHED;
1104         if (setup->is_secure)
1105                 ifmsh->security |= IEEE80211_MESH_SEC_SECURED;
1106
1107         return 0;
1108 }
1109
1110 static int ieee80211_update_mesh_config(struct wiphy *wiphy,
1111                                         struct net_device *dev, u32 mask,
1112                                         const struct mesh_config *nconf)
1113 {
1114         struct mesh_config *conf;
1115         struct ieee80211_sub_if_data *sdata;
1116         struct ieee80211_if_mesh *ifmsh;
1117
1118         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1119         ifmsh = &sdata->u.mesh;
1120
1121         /* Set the config options which we are interested in setting */
1122         conf = &(sdata->u.mesh.mshcfg);
1123         if (_chg_mesh_attr(NL80211_MESHCONF_RETRY_TIMEOUT, mask))
1124                 conf->dot11MeshRetryTimeout = nconf->dot11MeshRetryTimeout;
1125         if (_chg_mesh_attr(NL80211_MESHCONF_CONFIRM_TIMEOUT, mask))
1126                 conf->dot11MeshConfirmTimeout = nconf->dot11MeshConfirmTimeout;
1127         if (_chg_mesh_attr(NL80211_MESHCONF_HOLDING_TIMEOUT, mask))
1128                 conf->dot11MeshHoldingTimeout = nconf->dot11MeshHoldingTimeout;
1129         if (_chg_mesh_attr(NL80211_MESHCONF_MAX_PEER_LINKS, mask))
1130                 conf->dot11MeshMaxPeerLinks = nconf->dot11MeshMaxPeerLinks;
1131         if (_chg_mesh_attr(NL80211_MESHCONF_MAX_RETRIES, mask))
1132                 conf->dot11MeshMaxRetries = nconf->dot11MeshMaxRetries;
1133         if (_chg_mesh_attr(NL80211_MESHCONF_TTL, mask))
1134                 conf->dot11MeshTTL = nconf->dot11MeshTTL;
1135         if (_chg_mesh_attr(NL80211_MESHCONF_ELEMENT_TTL, mask))
1136                 conf->dot11MeshTTL = nconf->element_ttl;
1137         if (_chg_mesh_attr(NL80211_MESHCONF_AUTO_OPEN_PLINKS, mask))
1138                 conf->auto_open_plinks = nconf->auto_open_plinks;
1139         if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES, mask))
1140                 conf->dot11MeshHWMPmaxPREQretries =
1141                         nconf->dot11MeshHWMPmaxPREQretries;
1142         if (_chg_mesh_attr(NL80211_MESHCONF_PATH_REFRESH_TIME, mask))
1143                 conf->path_refresh_time = nconf->path_refresh_time;
1144         if (_chg_mesh_attr(NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT, mask))
1145                 conf->min_discovery_timeout = nconf->min_discovery_timeout;
1146         if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT, mask))
1147                 conf->dot11MeshHWMPactivePathTimeout =
1148                         nconf->dot11MeshHWMPactivePathTimeout;
1149         if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL, mask))
1150                 conf->dot11MeshHWMPpreqMinInterval =
1151                         nconf->dot11MeshHWMPpreqMinInterval;
1152         if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME,
1153                            mask))
1154                 conf->dot11MeshHWMPnetDiameterTraversalTime =
1155                         nconf->dot11MeshHWMPnetDiameterTraversalTime;
1156         if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_ROOTMODE, mask)) {
1157                 conf->dot11MeshHWMPRootMode = nconf->dot11MeshHWMPRootMode;
1158                 ieee80211_mesh_root_setup(ifmsh);
1159         }
1160         if (_chg_mesh_attr(NL80211_MESHCONF_GATE_ANNOUNCEMENTS, mask)) {
1161                 /* our current gate announcement implementation rides on root
1162                  * announcements, so require this ifmsh to also be a root node
1163                  * */
1164                 if (nconf->dot11MeshGateAnnouncementProtocol &&
1165                     !conf->dot11MeshHWMPRootMode) {
1166                         conf->dot11MeshHWMPRootMode = 1;
1167                         ieee80211_mesh_root_setup(ifmsh);
1168                 }
1169                 conf->dot11MeshGateAnnouncementProtocol =
1170                         nconf->dot11MeshGateAnnouncementProtocol;
1171         }
1172         if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_RANN_INTERVAL, mask)) {
1173                 conf->dot11MeshHWMPRannInterval =
1174                         nconf->dot11MeshHWMPRannInterval;
1175         }
1176         return 0;
1177 }
1178
1179 static int ieee80211_join_mesh(struct wiphy *wiphy, struct net_device *dev,
1180                                const struct mesh_config *conf,
1181                                const struct mesh_setup *setup)
1182 {
1183         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1184         struct ieee80211_if_mesh *ifmsh = &sdata->u.mesh;
1185         int err;
1186
1187         memcpy(&ifmsh->mshcfg, conf, sizeof(struct mesh_config));
1188         err = copy_mesh_setup(ifmsh, setup);
1189         if (err)
1190                 return err;
1191         ieee80211_start_mesh(sdata);
1192
1193         return 0;
1194 }
1195
1196 static int ieee80211_leave_mesh(struct wiphy *wiphy, struct net_device *dev)
1197 {
1198         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1199
1200         ieee80211_stop_mesh(sdata);
1201
1202         return 0;
1203 }
1204 #endif
1205
1206 static int ieee80211_change_bss(struct wiphy *wiphy,
1207                                 struct net_device *dev,
1208                                 struct bss_parameters *params)
1209 {
1210         struct ieee80211_sub_if_data *sdata;
1211         u32 changed = 0;
1212
1213         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1214
1215         if (params->use_cts_prot >= 0) {
1216                 sdata->vif.bss_conf.use_cts_prot = params->use_cts_prot;
1217                 changed |= BSS_CHANGED_ERP_CTS_PROT;
1218         }
1219         if (params->use_short_preamble >= 0) {
1220                 sdata->vif.bss_conf.use_short_preamble =
1221                         params->use_short_preamble;
1222                 changed |= BSS_CHANGED_ERP_PREAMBLE;
1223         }
1224
1225         if (!sdata->vif.bss_conf.use_short_slot &&
1226             sdata->local->hw.conf.channel->band == IEEE80211_BAND_5GHZ) {
1227                 sdata->vif.bss_conf.use_short_slot = true;
1228                 changed |= BSS_CHANGED_ERP_SLOT;
1229         }
1230
1231         if (params->use_short_slot_time >= 0) {
1232                 sdata->vif.bss_conf.use_short_slot =
1233                         params->use_short_slot_time;
1234                 changed |= BSS_CHANGED_ERP_SLOT;
1235         }
1236
1237         if (params->basic_rates) {
1238                 int i, j;
1239                 u32 rates = 0;
1240                 struct ieee80211_local *local = wiphy_priv(wiphy);
1241                 struct ieee80211_supported_band *sband =
1242                         wiphy->bands[local->oper_channel->band];
1243
1244                 for (i = 0; i < params->basic_rates_len; i++) {
1245                         int rate = (params->basic_rates[i] & 0x7f) * 5;
1246                         for (j = 0; j < sband->n_bitrates; j++) {
1247                                 if (sband->bitrates[j].bitrate == rate)
1248                                         rates |= BIT(j);
1249                         }
1250                 }
1251                 sdata->vif.bss_conf.basic_rates = rates;
1252                 changed |= BSS_CHANGED_BASIC_RATES;
1253         }
1254
1255         if (params->ap_isolate >= 0) {
1256                 if (params->ap_isolate)
1257                         sdata->flags |= IEEE80211_SDATA_DONT_BRIDGE_PACKETS;
1258                 else
1259                         sdata->flags &= ~IEEE80211_SDATA_DONT_BRIDGE_PACKETS;
1260         }
1261
1262         if (params->ht_opmode >= 0) {
1263                 sdata->vif.bss_conf.ht_operation_mode =
1264                         (u16) params->ht_opmode;
1265                 changed |= BSS_CHANGED_HT;
1266         }
1267
1268         ieee80211_bss_info_change_notify(sdata, changed);
1269
1270         return 0;
1271 }
1272
1273 static int ieee80211_set_txq_params(struct wiphy *wiphy,
1274                                     struct ieee80211_txq_params *params)
1275 {
1276         struct ieee80211_local *local = wiphy_priv(wiphy);
1277         struct ieee80211_tx_queue_params p;
1278
1279         if (!local->ops->conf_tx)
1280                 return -EOPNOTSUPP;
1281
1282         memset(&p, 0, sizeof(p));
1283         p.aifs = params->aifs;
1284         p.cw_max = params->cwmax;
1285         p.cw_min = params->cwmin;
1286         p.txop = params->txop;
1287
1288         /*
1289          * Setting tx queue params disables u-apsd because it's only
1290          * called in master mode.
1291          */
1292         p.uapsd = false;
1293
1294         if (params->queue >= local->hw.queues)
1295                 return -EINVAL;
1296
1297         local->tx_conf[params->queue] = p;
1298         if (drv_conf_tx(local, params->queue, &p)) {
1299                 wiphy_debug(local->hw.wiphy,
1300                             "failed to set TX queue parameters for queue %d\n",
1301                             params->queue);
1302                 return -EINVAL;
1303         }
1304
1305         return 0;
1306 }
1307
1308 static int ieee80211_set_channel(struct wiphy *wiphy,
1309                                  struct net_device *netdev,
1310                                  struct ieee80211_channel *chan,
1311                                  enum nl80211_channel_type channel_type)
1312 {
1313         struct ieee80211_local *local = wiphy_priv(wiphy);
1314         struct ieee80211_sub_if_data *sdata = NULL;
1315         struct ieee80211_channel *old_oper;
1316         enum nl80211_channel_type old_oper_type;
1317         enum nl80211_channel_type old_vif_oper_type= NL80211_CHAN_NO_HT;
1318
1319         if (netdev)
1320                 sdata = IEEE80211_DEV_TO_SUB_IF(netdev);
1321
1322         switch (ieee80211_get_channel_mode(local, NULL)) {
1323         case CHAN_MODE_HOPPING:
1324                 return -EBUSY;
1325         case CHAN_MODE_FIXED:
1326                 if (local->oper_channel != chan)
1327                         return -EBUSY;
1328                 if (!sdata && local->_oper_channel_type == channel_type)
1329                         return 0;
1330                 break;
1331         case CHAN_MODE_UNDEFINED:
1332                 break;
1333         }
1334
1335         if (sdata)
1336                 old_vif_oper_type = sdata->vif.bss_conf.channel_type;
1337         old_oper_type = local->_oper_channel_type;
1338
1339         if (!ieee80211_set_channel_type(local, sdata, channel_type))
1340                 return -EBUSY;
1341
1342         old_oper = local->oper_channel;
1343         local->oper_channel = chan;
1344
1345         /* Update driver if changes were actually made. */
1346         if ((old_oper != local->oper_channel) ||
1347             (old_oper_type != local->_oper_channel_type))
1348                 ieee80211_hw_config(local, IEEE80211_CONF_CHANGE_CHANNEL);
1349
1350         if ((sdata && sdata->vif.type != NL80211_IFTYPE_MONITOR) &&
1351             old_vif_oper_type != sdata->vif.bss_conf.channel_type)
1352                 ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_HT);
1353
1354         return 0;
1355 }
1356
1357 #ifdef CONFIG_PM
1358 static int ieee80211_suspend(struct wiphy *wiphy,
1359                              struct cfg80211_wowlan *wowlan)
1360 {
1361         return __ieee80211_suspend(wiphy_priv(wiphy), wowlan);
1362 }
1363
1364 static int ieee80211_resume(struct wiphy *wiphy)
1365 {
1366         return __ieee80211_resume(wiphy_priv(wiphy));
1367 }
1368 #else
1369 #define ieee80211_suspend NULL
1370 #define ieee80211_resume NULL
1371 #endif
1372
1373 static int ieee80211_scan(struct wiphy *wiphy,
1374                           struct net_device *dev,
1375                           struct cfg80211_scan_request *req)
1376 {
1377         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1378
1379         switch (ieee80211_vif_type_p2p(&sdata->vif)) {
1380         case NL80211_IFTYPE_STATION:
1381         case NL80211_IFTYPE_ADHOC:
1382         case NL80211_IFTYPE_MESH_POINT:
1383         case NL80211_IFTYPE_P2P_CLIENT:
1384                 break;
1385         case NL80211_IFTYPE_P2P_GO:
1386                 if (sdata->local->ops->hw_scan)
1387                         break;
1388                 /*
1389                  * FIXME: implement NoA while scanning in software,
1390                  * for now fall through to allow scanning only when
1391                  * beaconing hasn't been configured yet
1392                  */
1393         case NL80211_IFTYPE_AP:
1394                 if (sdata->u.ap.beacon)
1395                         return -EOPNOTSUPP;
1396                 break;
1397         default:
1398                 return -EOPNOTSUPP;
1399         }
1400
1401         return ieee80211_request_scan(sdata, req);
1402 }
1403
1404 static int
1405 ieee80211_sched_scan_start(struct wiphy *wiphy,
1406                            struct net_device *dev,
1407                            struct cfg80211_sched_scan_request *req)
1408 {
1409         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1410
1411         if (!sdata->local->ops->sched_scan_start)
1412                 return -EOPNOTSUPP;
1413
1414         return ieee80211_request_sched_scan_start(sdata, req);
1415 }
1416
1417 static int
1418 ieee80211_sched_scan_stop(struct wiphy *wiphy, struct net_device *dev)
1419 {
1420         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1421
1422         if (!sdata->local->ops->sched_scan_stop)
1423                 return -EOPNOTSUPP;
1424
1425         return ieee80211_request_sched_scan_stop(sdata);
1426 }
1427
1428 static int ieee80211_auth(struct wiphy *wiphy, struct net_device *dev,
1429                           struct cfg80211_auth_request *req)
1430 {
1431         return ieee80211_mgd_auth(IEEE80211_DEV_TO_SUB_IF(dev), req);
1432 }
1433
1434 static int ieee80211_assoc(struct wiphy *wiphy, struct net_device *dev,
1435                            struct cfg80211_assoc_request *req)
1436 {
1437         struct ieee80211_local *local = wiphy_priv(wiphy);
1438         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1439
1440         switch (ieee80211_get_channel_mode(local, sdata)) {
1441         case CHAN_MODE_HOPPING:
1442                 return -EBUSY;
1443         case CHAN_MODE_FIXED:
1444                 if (local->oper_channel == req->bss->channel)
1445                         break;
1446                 return -EBUSY;
1447         case CHAN_MODE_UNDEFINED:
1448                 break;
1449         }
1450
1451         return ieee80211_mgd_assoc(IEEE80211_DEV_TO_SUB_IF(dev), req);
1452 }
1453
1454 static int ieee80211_deauth(struct wiphy *wiphy, struct net_device *dev,
1455                             struct cfg80211_deauth_request *req,
1456                             void *cookie)
1457 {
1458         return ieee80211_mgd_deauth(IEEE80211_DEV_TO_SUB_IF(dev),
1459                                     req, cookie);
1460 }
1461
1462 static int ieee80211_disassoc(struct wiphy *wiphy, struct net_device *dev,
1463                               struct cfg80211_disassoc_request *req,
1464                               void *cookie)
1465 {
1466         return ieee80211_mgd_disassoc(IEEE80211_DEV_TO_SUB_IF(dev),
1467                                       req, cookie);
1468 }
1469
1470 static int ieee80211_join_ibss(struct wiphy *wiphy, struct net_device *dev,
1471                                struct cfg80211_ibss_params *params)
1472 {
1473         struct ieee80211_local *local = wiphy_priv(wiphy);
1474         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1475
1476         switch (ieee80211_get_channel_mode(local, sdata)) {
1477         case CHAN_MODE_HOPPING:
1478                 return -EBUSY;
1479         case CHAN_MODE_FIXED:
1480                 if (!params->channel_fixed)
1481                         return -EBUSY;
1482                 if (local->oper_channel == params->channel)
1483                         break;
1484                 return -EBUSY;
1485         case CHAN_MODE_UNDEFINED:
1486                 break;
1487         }
1488
1489         return ieee80211_ibss_join(sdata, params);
1490 }
1491
1492 static int ieee80211_leave_ibss(struct wiphy *wiphy, struct net_device *dev)
1493 {
1494         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1495
1496         return ieee80211_ibss_leave(sdata);
1497 }
1498
1499 static int ieee80211_set_wiphy_params(struct wiphy *wiphy, u32 changed)
1500 {
1501         struct ieee80211_local *local = wiphy_priv(wiphy);
1502         int err;
1503
1504         if (changed & WIPHY_PARAM_FRAG_THRESHOLD) {
1505                 err = drv_set_frag_threshold(local, wiphy->frag_threshold);
1506
1507                 if (err)
1508                         return err;
1509         }
1510
1511         if (changed & WIPHY_PARAM_COVERAGE_CLASS) {
1512                 err = drv_set_coverage_class(local, wiphy->coverage_class);
1513
1514                 if (err)
1515                         return err;
1516         }
1517
1518         if (changed & WIPHY_PARAM_RTS_THRESHOLD) {
1519                 err = drv_set_rts_threshold(local, wiphy->rts_threshold);
1520
1521                 if (err)
1522                         return err;
1523         }
1524
1525         if (changed & WIPHY_PARAM_RETRY_SHORT)
1526                 local->hw.conf.short_frame_max_tx_count = wiphy->retry_short;
1527         if (changed & WIPHY_PARAM_RETRY_LONG)
1528                 local->hw.conf.long_frame_max_tx_count = wiphy->retry_long;
1529         if (changed &
1530             (WIPHY_PARAM_RETRY_SHORT | WIPHY_PARAM_RETRY_LONG))
1531                 ieee80211_hw_config(local, IEEE80211_CONF_CHANGE_RETRY_LIMITS);
1532
1533         return 0;
1534 }
1535
1536 static int ieee80211_set_tx_power(struct wiphy *wiphy,
1537                                   enum nl80211_tx_power_setting type, int mbm)
1538 {
1539         struct ieee80211_local *local = wiphy_priv(wiphy);
1540         struct ieee80211_channel *chan = local->hw.conf.channel;
1541         u32 changes = 0;
1542
1543         switch (type) {
1544         case NL80211_TX_POWER_AUTOMATIC:
1545                 local->user_power_level = -1;
1546                 break;
1547         case NL80211_TX_POWER_LIMITED:
1548                 if (mbm < 0 || (mbm % 100))
1549                         return -EOPNOTSUPP;
1550                 local->user_power_level = MBM_TO_DBM(mbm);
1551                 break;
1552         case NL80211_TX_POWER_FIXED:
1553                 if (mbm < 0 || (mbm % 100))
1554                         return -EOPNOTSUPP;
1555                 /* TODO: move to cfg80211 when it knows the channel */
1556                 if (MBM_TO_DBM(mbm) > chan->max_power)
1557                         return -EINVAL;
1558                 local->user_power_level = MBM_TO_DBM(mbm);
1559                 break;
1560         }
1561
1562         ieee80211_hw_config(local, changes);
1563
1564         return 0;
1565 }
1566
1567 static int ieee80211_get_tx_power(struct wiphy *wiphy, int *dbm)
1568 {
1569         struct ieee80211_local *local = wiphy_priv(wiphy);
1570
1571         *dbm = local->hw.conf.power_level;
1572
1573         return 0;
1574 }
1575
1576 static int ieee80211_set_wds_peer(struct wiphy *wiphy, struct net_device *dev,
1577                                   const u8 *addr)
1578 {
1579         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1580
1581         memcpy(&sdata->u.wds.remote_addr, addr, ETH_ALEN);
1582
1583         return 0;
1584 }
1585
1586 static void ieee80211_rfkill_poll(struct wiphy *wiphy)
1587 {
1588         struct ieee80211_local *local = wiphy_priv(wiphy);
1589
1590         drv_rfkill_poll(local);
1591 }
1592
1593 #ifdef CONFIG_NL80211_TESTMODE
1594 static int ieee80211_testmode_cmd(struct wiphy *wiphy, void *data, int len)
1595 {
1596         struct ieee80211_local *local = wiphy_priv(wiphy);
1597
1598         if (!local->ops->testmode_cmd)
1599                 return -EOPNOTSUPP;
1600
1601         return local->ops->testmode_cmd(&local->hw, data, len);
1602 }
1603
1604 static int ieee80211_testmode_dump(struct wiphy *wiphy,
1605                                    struct sk_buff *skb,
1606                                    struct netlink_callback *cb,
1607                                    void *data, int len)
1608 {
1609         struct ieee80211_local *local = wiphy_priv(wiphy);
1610
1611         if (!local->ops->testmode_dump)
1612                 return -EOPNOTSUPP;
1613
1614         return local->ops->testmode_dump(&local->hw, skb, cb, data, len);
1615 }
1616 #endif
1617
1618 int __ieee80211_request_smps(struct ieee80211_sub_if_data *sdata,
1619                              enum ieee80211_smps_mode smps_mode)
1620 {
1621         const u8 *ap;
1622         enum ieee80211_smps_mode old_req;
1623         int err;
1624
1625         lockdep_assert_held(&sdata->u.mgd.mtx);
1626
1627         old_req = sdata->u.mgd.req_smps;
1628         sdata->u.mgd.req_smps = smps_mode;
1629
1630         if (old_req == smps_mode &&
1631             smps_mode != IEEE80211_SMPS_AUTOMATIC)
1632                 return 0;
1633
1634         /*
1635          * If not associated, or current association is not an HT
1636          * association, there's no need to send an action frame.
1637          */
1638         if (!sdata->u.mgd.associated ||
1639             sdata->vif.bss_conf.channel_type == NL80211_CHAN_NO_HT) {
1640                 mutex_lock(&sdata->local->iflist_mtx);
1641                 ieee80211_recalc_smps(sdata->local);
1642                 mutex_unlock(&sdata->local->iflist_mtx);
1643                 return 0;
1644         }
1645
1646         ap = sdata->u.mgd.associated->bssid;
1647
1648         if (smps_mode == IEEE80211_SMPS_AUTOMATIC) {
1649                 if (sdata->u.mgd.powersave)
1650                         smps_mode = IEEE80211_SMPS_DYNAMIC;
1651                 else
1652                         smps_mode = IEEE80211_SMPS_OFF;
1653         }
1654
1655         /* send SM PS frame to AP */
1656         err = ieee80211_send_smps_action(sdata, smps_mode,
1657                                          ap, ap);
1658         if (err)
1659                 sdata->u.mgd.req_smps = old_req;
1660
1661         return err;
1662 }
1663
1664 static int ieee80211_set_power_mgmt(struct wiphy *wiphy, struct net_device *dev,
1665                                     bool enabled, int timeout)
1666 {
1667         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1668         struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
1669
1670         if (sdata->vif.type != NL80211_IFTYPE_STATION)
1671                 return -EOPNOTSUPP;
1672
1673         if (!(local->hw.flags & IEEE80211_HW_SUPPORTS_PS))
1674                 return -EOPNOTSUPP;
1675
1676         if (enabled == sdata->u.mgd.powersave &&
1677             timeout == local->dynamic_ps_forced_timeout)
1678                 return 0;
1679
1680         sdata->u.mgd.powersave = enabled;
1681         local->dynamic_ps_forced_timeout = timeout;
1682
1683         /* no change, but if automatic follow powersave */
1684         mutex_lock(&sdata->u.mgd.mtx);
1685         __ieee80211_request_smps(sdata, sdata->u.mgd.req_smps);
1686         mutex_unlock(&sdata->u.mgd.mtx);
1687
1688         if (local->hw.flags & IEEE80211_HW_SUPPORTS_DYNAMIC_PS)
1689                 ieee80211_hw_config(local, IEEE80211_CONF_CHANGE_PS);
1690
1691         ieee80211_recalc_ps(local, -1);
1692
1693         return 0;
1694 }
1695
1696 static int ieee80211_set_cqm_rssi_config(struct wiphy *wiphy,
1697                                          struct net_device *dev,
1698                                          s32 rssi_thold, u32 rssi_hyst)
1699 {
1700         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1701         struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
1702         struct ieee80211_vif *vif = &sdata->vif;
1703         struct ieee80211_bss_conf *bss_conf = &vif->bss_conf;
1704
1705         if (rssi_thold == bss_conf->cqm_rssi_thold &&
1706             rssi_hyst == bss_conf->cqm_rssi_hyst)
1707                 return 0;
1708
1709         bss_conf->cqm_rssi_thold = rssi_thold;
1710         bss_conf->cqm_rssi_hyst = rssi_hyst;
1711
1712         if (!(local->hw.flags & IEEE80211_HW_SUPPORTS_CQM_RSSI)) {
1713                 if (sdata->vif.type != NL80211_IFTYPE_STATION)
1714                         return -EOPNOTSUPP;
1715                 return 0;
1716         }
1717
1718         /* tell the driver upon association, unless already associated */
1719         if (sdata->u.mgd.associated)
1720                 ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_CQM);
1721
1722         return 0;
1723 }
1724
1725 static int ieee80211_set_bitrate_mask(struct wiphy *wiphy,
1726                                       struct net_device *dev,
1727                                       const u8 *addr,
1728                                       const struct cfg80211_bitrate_mask *mask)
1729 {
1730         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1731         struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
1732         int i, ret;
1733
1734         if (local->hw.flags & IEEE80211_HW_HAS_RATE_CONTROL) {
1735                 ret = drv_set_bitrate_mask(local, sdata, mask);
1736                 if (ret)
1737                         return ret;
1738         }
1739
1740         for (i = 0; i < IEEE80211_NUM_BANDS; i++)
1741                 sdata->rc_rateidx_mask[i] = mask->control[i].legacy;
1742
1743         return 0;
1744 }
1745
1746 static int ieee80211_remain_on_channel_hw(struct ieee80211_local *local,
1747                                           struct net_device *dev,
1748                                           struct ieee80211_channel *chan,
1749                                           enum nl80211_channel_type chantype,
1750                                           unsigned int duration, u64 *cookie)
1751 {
1752         int ret;
1753         u32 random_cookie;
1754
1755         lockdep_assert_held(&local->mtx);
1756
1757         if (local->hw_roc_cookie)
1758                 return -EBUSY;
1759         /* must be nonzero */
1760         random_cookie = random32() | 1;
1761
1762         *cookie = random_cookie;
1763         local->hw_roc_dev = dev;
1764         local->hw_roc_cookie = random_cookie;
1765         local->hw_roc_channel = chan;
1766         local->hw_roc_channel_type = chantype;
1767         local->hw_roc_duration = duration;
1768         ret = drv_remain_on_channel(local, chan, chantype, duration);
1769         if (ret) {
1770                 local->hw_roc_channel = NULL;
1771                 local->hw_roc_cookie = 0;
1772         }
1773
1774         return ret;
1775 }
1776
1777 static int ieee80211_remain_on_channel(struct wiphy *wiphy,
1778                                        struct net_device *dev,
1779                                        struct ieee80211_channel *chan,
1780                                        enum nl80211_channel_type channel_type,
1781                                        unsigned int duration,
1782                                        u64 *cookie)
1783 {
1784         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1785         struct ieee80211_local *local = sdata->local;
1786
1787         if (local->ops->remain_on_channel) {
1788                 int ret;
1789
1790                 mutex_lock(&local->mtx);
1791                 ret = ieee80211_remain_on_channel_hw(local, dev,
1792                                                      chan, channel_type,
1793                                                      duration, cookie);
1794                 local->hw_roc_for_tx = false;
1795                 mutex_unlock(&local->mtx);
1796
1797                 return ret;
1798         }
1799
1800         return ieee80211_wk_remain_on_channel(sdata, chan, channel_type,
1801                                               duration, cookie);
1802 }
1803
1804 static int ieee80211_cancel_remain_on_channel_hw(struct ieee80211_local *local,
1805                                                  u64 cookie)
1806 {
1807         int ret;
1808
1809         lockdep_assert_held(&local->mtx);
1810
1811         if (local->hw_roc_cookie != cookie)
1812                 return -ENOENT;
1813
1814         ret = drv_cancel_remain_on_channel(local);
1815         if (ret)
1816                 return ret;
1817
1818         local->hw_roc_cookie = 0;
1819         local->hw_roc_channel = NULL;
1820
1821         ieee80211_recalc_idle(local);
1822
1823         return 0;
1824 }
1825
1826 static int ieee80211_cancel_remain_on_channel(struct wiphy *wiphy,
1827                                               struct net_device *dev,
1828                                               u64 cookie)
1829 {
1830         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1831         struct ieee80211_local *local = sdata->local;
1832
1833         if (local->ops->cancel_remain_on_channel) {
1834                 int ret;
1835
1836                 mutex_lock(&local->mtx);
1837                 ret = ieee80211_cancel_remain_on_channel_hw(local, cookie);
1838                 mutex_unlock(&local->mtx);
1839
1840                 return ret;
1841         }
1842
1843         return ieee80211_wk_cancel_remain_on_channel(sdata, cookie);
1844 }
1845
1846 static enum work_done_result
1847 ieee80211_offchan_tx_done(struct ieee80211_work *wk, struct sk_buff *skb)
1848 {
1849         /*
1850          * Use the data embedded in the work struct for reporting
1851          * here so if the driver mangled the SKB before dropping
1852          * it (which is the only way we really should get here)
1853          * then we don't report mangled data.
1854          *
1855          * If there was no wait time, then by the time we get here
1856          * the driver will likely not have reported the status yet,
1857          * so in that case userspace will have to deal with it.
1858          */
1859
1860         if (wk->offchan_tx.wait && wk->offchan_tx.frame)
1861                 cfg80211_mgmt_tx_status(wk->sdata->dev,
1862                                         (unsigned long) wk->offchan_tx.frame,
1863                                         wk->ie, wk->ie_len, false, GFP_KERNEL);
1864
1865         return WORK_DONE_DESTROY;
1866 }
1867
1868 static int ieee80211_mgmt_tx(struct wiphy *wiphy, struct net_device *dev,
1869                              struct ieee80211_channel *chan, bool offchan,
1870                              enum nl80211_channel_type channel_type,
1871                              bool channel_type_valid, unsigned int wait,
1872                              const u8 *buf, size_t len, u64 *cookie)
1873 {
1874         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1875         struct ieee80211_local *local = sdata->local;
1876         struct sk_buff *skb;
1877         struct sta_info *sta;
1878         struct ieee80211_work *wk;
1879         const struct ieee80211_mgmt *mgmt = (void *)buf;
1880         u32 flags = IEEE80211_TX_INTFL_NL80211_FRAME_TX |
1881                     IEEE80211_TX_CTL_REQ_TX_STATUS;
1882         bool is_offchan = false;
1883
1884         /* Check that we are on the requested channel for transmission */
1885         if (chan != local->tmp_channel &&
1886             chan != local->oper_channel)
1887                 is_offchan = true;
1888         if (channel_type_valid &&
1889             (channel_type != local->tmp_channel_type &&
1890              channel_type != local->_oper_channel_type))
1891                 is_offchan = true;
1892
1893         if (chan == local->hw_roc_channel) {
1894                 /* TODO: check channel type? */
1895                 is_offchan = false;
1896                 flags |= IEEE80211_TX_CTL_TX_OFFCHAN;
1897         }
1898
1899         if (is_offchan && !offchan)
1900                 return -EBUSY;
1901
1902         switch (sdata->vif.type) {
1903         case NL80211_IFTYPE_ADHOC:
1904         case NL80211_IFTYPE_AP:
1905         case NL80211_IFTYPE_AP_VLAN:
1906         case NL80211_IFTYPE_P2P_GO:
1907         case NL80211_IFTYPE_MESH_POINT:
1908                 if (!ieee80211_is_action(mgmt->frame_control) ||
1909                     mgmt->u.action.category == WLAN_CATEGORY_PUBLIC)
1910                         break;
1911                 rcu_read_lock();
1912                 sta = sta_info_get(sdata, mgmt->da);
1913                 rcu_read_unlock();
1914                 if (!sta)
1915                         return -ENOLINK;
1916                 break;
1917         case NL80211_IFTYPE_STATION:
1918         case NL80211_IFTYPE_P2P_CLIENT:
1919                 break;
1920         default:
1921                 return -EOPNOTSUPP;
1922         }
1923
1924         skb = dev_alloc_skb(local->hw.extra_tx_headroom + len);
1925         if (!skb)
1926                 return -ENOMEM;
1927         skb_reserve(skb, local->hw.extra_tx_headroom);
1928
1929         memcpy(skb_put(skb, len), buf, len);
1930
1931         IEEE80211_SKB_CB(skb)->flags = flags;
1932
1933         skb->dev = sdata->dev;
1934
1935         *cookie = (unsigned long) skb;
1936
1937         if (is_offchan && local->ops->remain_on_channel) {
1938                 unsigned int duration;
1939                 int ret;
1940
1941                 mutex_lock(&local->mtx);
1942                 /*
1943                  * If the duration is zero, then the driver
1944                  * wouldn't actually do anything. Set it to
1945                  * 100 for now.
1946                  *
1947                  * TODO: cancel the off-channel operation
1948                  *       when we get the SKB's TX status and
1949                  *       the wait time was zero before.
1950                  */
1951                 duration = 100;
1952                 if (wait)
1953                         duration = wait;
1954                 ret = ieee80211_remain_on_channel_hw(local, dev, chan,
1955                                                      channel_type,
1956                                                      duration, cookie);
1957                 if (ret) {
1958                         kfree_skb(skb);
1959                         mutex_unlock(&local->mtx);
1960                         return ret;
1961                 }
1962
1963                 local->hw_roc_for_tx = true;
1964                 local->hw_roc_duration = wait;
1965
1966                 /*
1967                  * queue up frame for transmission after
1968                  * ieee80211_ready_on_channel call
1969                  */
1970
1971                 /* modify cookie to prevent API mismatches */
1972                 *cookie ^= 2;
1973                 IEEE80211_SKB_CB(skb)->flags |= IEEE80211_TX_CTL_TX_OFFCHAN;
1974                 local->hw_roc_skb = skb;
1975                 local->hw_roc_skb_for_status = skb;
1976                 mutex_unlock(&local->mtx);
1977
1978                 return 0;
1979         }
1980
1981         /*
1982          * Can transmit right away if the channel was the
1983          * right one and there's no wait involved... If a
1984          * wait is involved, we might otherwise not be on
1985          * the right channel for long enough!
1986          */
1987         if (!is_offchan && !wait && !sdata->vif.bss_conf.idle) {
1988                 ieee80211_tx_skb(sdata, skb);
1989                 return 0;
1990         }
1991
1992         wk = kzalloc(sizeof(*wk) + len, GFP_KERNEL);
1993         if (!wk) {
1994                 kfree_skb(skb);
1995                 return -ENOMEM;
1996         }
1997
1998         wk->type = IEEE80211_WORK_OFFCHANNEL_TX;
1999         wk->chan = chan;
2000         wk->chan_type = channel_type;
2001         wk->sdata = sdata;
2002         wk->done = ieee80211_offchan_tx_done;
2003         wk->offchan_tx.frame = skb;
2004         wk->offchan_tx.wait = wait;
2005         wk->ie_len = len;
2006         memcpy(wk->ie, buf, len);
2007
2008         ieee80211_add_work(wk);
2009         return 0;
2010 }
2011
2012 static int ieee80211_mgmt_tx_cancel_wait(struct wiphy *wiphy,
2013                                          struct net_device *dev,
2014                                          u64 cookie)
2015 {
2016         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2017         struct ieee80211_local *local = sdata->local;
2018         struct ieee80211_work *wk;
2019         int ret = -ENOENT;
2020
2021         mutex_lock(&local->mtx);
2022
2023         if (local->ops->cancel_remain_on_channel) {
2024                 cookie ^= 2;
2025                 ret = ieee80211_cancel_remain_on_channel_hw(local, cookie);
2026
2027                 if (ret == 0) {
2028                         kfree_skb(local->hw_roc_skb);
2029                         local->hw_roc_skb = NULL;
2030                         local->hw_roc_skb_for_status = NULL;
2031                 }
2032
2033                 mutex_unlock(&local->mtx);
2034
2035                 return ret;
2036         }
2037
2038         list_for_each_entry(wk, &local->work_list, list) {
2039                 if (wk->sdata != sdata)
2040                         continue;
2041
2042                 if (wk->type != IEEE80211_WORK_OFFCHANNEL_TX)
2043                         continue;
2044
2045                 if (cookie != (unsigned long) wk->offchan_tx.frame)
2046                         continue;
2047
2048                 wk->timeout = jiffies;
2049
2050                 ieee80211_queue_work(&local->hw, &local->work_work);
2051                 ret = 0;
2052                 break;
2053         }
2054         mutex_unlock(&local->mtx);
2055
2056         return ret;
2057 }
2058
2059 static void ieee80211_mgmt_frame_register(struct wiphy *wiphy,
2060                                           struct net_device *dev,
2061                                           u16 frame_type, bool reg)
2062 {
2063         struct ieee80211_local *local = wiphy_priv(wiphy);
2064
2065         if (frame_type != (IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_PROBE_REQ))
2066                 return;
2067
2068         if (reg)
2069                 local->probe_req_reg++;
2070         else
2071                 local->probe_req_reg--;
2072
2073         ieee80211_queue_work(&local->hw, &local->reconfig_filter);
2074 }
2075
2076 static int ieee80211_set_antenna(struct wiphy *wiphy, u32 tx_ant, u32 rx_ant)
2077 {
2078         struct ieee80211_local *local = wiphy_priv(wiphy);
2079
2080         if (local->started)
2081                 return -EOPNOTSUPP;
2082
2083         return drv_set_antenna(local, tx_ant, rx_ant);
2084 }
2085
2086 static int ieee80211_get_antenna(struct wiphy *wiphy, u32 *tx_ant, u32 *rx_ant)
2087 {
2088         struct ieee80211_local *local = wiphy_priv(wiphy);
2089
2090         return drv_get_antenna(local, tx_ant, rx_ant);
2091 }
2092
2093 static int ieee80211_set_ringparam(struct wiphy *wiphy, u32 tx, u32 rx)
2094 {
2095         struct ieee80211_local *local = wiphy_priv(wiphy);
2096
2097         return drv_set_ringparam(local, tx, rx);
2098 }
2099
2100 static void ieee80211_get_ringparam(struct wiphy *wiphy,
2101                                     u32 *tx, u32 *tx_max, u32 *rx, u32 *rx_max)
2102 {
2103         struct ieee80211_local *local = wiphy_priv(wiphy);
2104
2105         drv_get_ringparam(local, tx, tx_max, rx, rx_max);
2106 }
2107
2108 static int ieee80211_set_rekey_data(struct wiphy *wiphy,
2109                                     struct net_device *dev,
2110                                     struct cfg80211_gtk_rekey_data *data)
2111 {
2112         struct ieee80211_local *local = wiphy_priv(wiphy);
2113         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2114
2115         if (!local->ops->set_rekey_data)
2116                 return -EOPNOTSUPP;
2117
2118         drv_set_rekey_data(local, sdata, data);
2119
2120         return 0;
2121 }
2122
2123 struct cfg80211_ops mac80211_config_ops = {
2124         .add_virtual_intf = ieee80211_add_iface,
2125         .del_virtual_intf = ieee80211_del_iface,
2126         .change_virtual_intf = ieee80211_change_iface,
2127         .add_key = ieee80211_add_key,
2128         .del_key = ieee80211_del_key,
2129         .get_key = ieee80211_get_key,
2130         .set_default_key = ieee80211_config_default_key,
2131         .set_default_mgmt_key = ieee80211_config_default_mgmt_key,
2132         .add_beacon = ieee80211_add_beacon,
2133         .set_beacon = ieee80211_set_beacon,
2134         .del_beacon = ieee80211_del_beacon,
2135         .add_station = ieee80211_add_station,
2136         .del_station = ieee80211_del_station,
2137         .change_station = ieee80211_change_station,
2138         .get_station = ieee80211_get_station,
2139         .dump_station = ieee80211_dump_station,
2140         .dump_survey = ieee80211_dump_survey,
2141 #ifdef CONFIG_MAC80211_MESH
2142         .add_mpath = ieee80211_add_mpath,
2143         .del_mpath = ieee80211_del_mpath,
2144         .change_mpath = ieee80211_change_mpath,
2145         .get_mpath = ieee80211_get_mpath,
2146         .dump_mpath = ieee80211_dump_mpath,
2147         .update_mesh_config = ieee80211_update_mesh_config,
2148         .get_mesh_config = ieee80211_get_mesh_config,
2149         .join_mesh = ieee80211_join_mesh,
2150         .leave_mesh = ieee80211_leave_mesh,
2151 #endif
2152         .change_bss = ieee80211_change_bss,
2153         .set_txq_params = ieee80211_set_txq_params,
2154         .set_channel = ieee80211_set_channel,
2155         .suspend = ieee80211_suspend,
2156         .resume = ieee80211_resume,
2157         .scan = ieee80211_scan,
2158         .sched_scan_start = ieee80211_sched_scan_start,
2159         .sched_scan_stop = ieee80211_sched_scan_stop,
2160         .auth = ieee80211_auth,
2161         .assoc = ieee80211_assoc,
2162         .deauth = ieee80211_deauth,
2163         .disassoc = ieee80211_disassoc,
2164         .join_ibss = ieee80211_join_ibss,
2165         .leave_ibss = ieee80211_leave_ibss,
2166         .set_wiphy_params = ieee80211_set_wiphy_params,
2167         .set_tx_power = ieee80211_set_tx_power,
2168         .get_tx_power = ieee80211_get_tx_power,
2169         .set_wds_peer = ieee80211_set_wds_peer,
2170         .rfkill_poll = ieee80211_rfkill_poll,
2171         CFG80211_TESTMODE_CMD(ieee80211_testmode_cmd)
2172         CFG80211_TESTMODE_DUMP(ieee80211_testmode_dump)
2173         .set_power_mgmt = ieee80211_set_power_mgmt,
2174         .set_bitrate_mask = ieee80211_set_bitrate_mask,
2175         .remain_on_channel = ieee80211_remain_on_channel,
2176         .cancel_remain_on_channel = ieee80211_cancel_remain_on_channel,
2177         .mgmt_tx = ieee80211_mgmt_tx,
2178         .mgmt_tx_cancel_wait = ieee80211_mgmt_tx_cancel_wait,
2179         .set_cqm_rssi_config = ieee80211_set_cqm_rssi_config,
2180         .mgmt_frame_register = ieee80211_mgmt_frame_register,
2181         .set_antenna = ieee80211_set_antenna,
2182         .get_antenna = ieee80211_get_antenna,
2183         .set_ringparam = ieee80211_set_ringparam,
2184         .get_ringparam = ieee80211_get_ringparam,
2185         .set_rekey_data = ieee80211_set_rekey_data,
2186 };