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 int ieee80211_add_iface(struct wiphy *wiphy, char *name,
  23                                enum nl80211_iftype type, u32 *flags,
  24                                struct vif_params *params)
  25 {
  26         struct ieee80211_local *local = wiphy_priv(wiphy);
  27         struct net_device *dev;
  28         struct ieee80211_sub_if_data *sdata;
  29         int err;
  30
  31         err = ieee80211_if_add(local, name, &dev, type, params);
  32         if (err || type != NL80211_IFTYPE_MONITOR || !flags)
  33                 return err;
  34
  35         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
  36         sdata->u.mntr_flags = *flags;
  37         return 0;
  38 }
  39
  40 static int ieee80211_del_iface(struct wiphy *wiphy, struct net_device *dev)
  41 {
  42         ieee80211_if_remove(IEEE80211_DEV_TO_SUB_IF(dev));
  43
  44         return 0;
  45 }
  46
  47 static int ieee80211_change_iface(struct wiphy *wiphy,
  48                                   struct net_device *dev,
  49                                   enum nl80211_iftype type, u32 *flags,
  50                                   struct vif_params *params)
  51 {
  52         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
  53         int ret;
  54
  55         ret = ieee80211_if_change_type(sdata, type);
  56         if (ret)
  57                 return ret;
  58
  59         if (ieee80211_vif_is_mesh(&sdata->vif) && params->mesh_id_len)
  60                 ieee80211_sdata_set_mesh_id(sdata,
  61                                             params->mesh_id_len,
  62                                             params->mesh_id);
  63
  64         if (type == NL80211_IFTYPE_AP_VLAN &&
  65             params && params->use_4addr == 0)
  66                 rcu_assign_pointer(sdata->u.vlan.sta, NULL);
  67         else if (type == NL80211_IFTYPE_STATION &&
  68                  params && params->use_4addr >= 0)
  69                 sdata->u.mgd.use_4addr = params->use_4addr;
  70
  71         if (sdata->vif.type == NL80211_IFTYPE_MONITOR && flags) {
  72                 struct ieee80211_local *local = sdata->local;
  73
  74                 if (ieee80211_sdata_running(sdata)) {
  75                         /*
  76                          * Prohibit MONITOR_FLAG_COOK_FRAMES to be
  77                          * changed while the interface is up.
  78                          * Else we would need to add a lot of cruft
  79                          * to update everything:
  80                          *      cooked_mntrs, monitor and all fif_* counters
  81                          *      reconfigure hardware
  82                          */
  83                         if ((*flags & MONITOR_FLAG_COOK_FRAMES) !=
  84                             (sdata->u.mntr_flags & MONITOR_FLAG_COOK_FRAMES))
  85                                 return -EBUSY;
  86
  87                         ieee80211_adjust_monitor_flags(sdata, -1);
  88                         sdata->u.mntr_flags = *flags;
  89                         ieee80211_adjust_monitor_flags(sdata, 1);
  90
  91                         ieee80211_configure_filter(local);
  92                 } else {
  93                         /*
  94                          * Because the interface is down, ieee80211_do_stop
  95                          * and ieee80211_do_open take care of "everything"
  96                          * mentioned in the comment above.
  97                          */
  98                         sdata->u.mntr_flags = *flags;
  99                 }
 100         }
 101
 102         return 0;
 103 }
 104
 105 static int ieee80211_add_key(struct wiphy *wiphy, struct net_device *dev,
 106                              u8 key_idx, bool pairwise, const u8 *mac_addr,
 107                              struct key_params *params)
 108 {
 109         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 110         struct sta_info *sta = NULL;
 111         struct ieee80211_key *key;
 112         int err;
 113
 114         if (!ieee80211_sdata_running(sdata))
 115                 return -ENETDOWN;
 116
 117         /* reject WEP and TKIP keys if WEP failed to initialize */
 118         switch (params->cipher) {
 119         case WLAN_CIPHER_SUITE_WEP40:
 120         case WLAN_CIPHER_SUITE_TKIP:
 121         case WLAN_CIPHER_SUITE_WEP104:
 122                 if (IS_ERR(sdata->local->wep_tx_tfm))
 123                         return -EINVAL;
 124                 break;
 125         default:
 126                 break;
 127         }
 128
 129         key = ieee80211_key_alloc(params->cipher, key_idx, params->key_len,
 130                                   params->key, params->seq_len, params->seq);
 131         if (IS_ERR(key))
 132                 return PTR_ERR(key);
 133
 134         if (pairwise)
 135                 key->conf.flags |= IEEE80211_KEY_FLAG_PAIRWISE;
 136
 137         mutex_lock(&sdata->local->sta_mtx);
 138
 139         if (mac_addr) {
 140                 sta = sta_info_get_bss(sdata, mac_addr);
 141                 if (!sta) {
 142                         ieee80211_key_free(sdata->local, key);
 143                         err = -ENOENT;
 144                         goto out_unlock;
 145                 }
 146         }
 147
 148         err = ieee80211_key_link(key, sdata, sta);
 149         if (err)
 150                 ieee80211_key_free(sdata->local, key);
 151
 152  out_unlock:
 153         mutex_unlock(&sdata->local->sta_mtx);
 154
 155         return err;
 156 }
 157
 158 static int ieee80211_del_key(struct wiphy *wiphy, struct net_device *dev,
 159                              u8 key_idx, bool pairwise, const u8 *mac_addr)
 160 {
 161         struct ieee80211_sub_if_data *sdata;
 162         struct sta_info *sta;
 163         int ret;
 164
 165         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 166
 167         mutex_lock(&sdata->local->sta_mtx);
 168
 169         if (mac_addr) {
 170                 ret = -ENOENT;
 171
 172                 sta = sta_info_get_bss(sdata, mac_addr);
 173                 if (!sta)
 174                         goto out_unlock;
 175
 176                 if (pairwise) {
 177                         if (sta->ptk) {
 178                                 ieee80211_key_free(sdata->local, sta->ptk);
 179                                 ret = 0;
 180                         }
 181                 } else {
 182                         if (sta->gtk[key_idx]) {
 183                                 ieee80211_key_free(sdata->local,
 184                                                    sta->gtk[key_idx]);
 185                                 ret = 0;
 186                         }
 187                 }
 188
 189                 goto out_unlock;
 190         }
 191
 192         if (!sdata->keys[key_idx]) {
 193                 ret = -ENOENT;
 194                 goto out_unlock;
 195         }
 196
 197         ieee80211_key_free(sdata->local, sdata->keys[key_idx]);
 198         WARN_ON(sdata->keys[key_idx]);
 199
 200         ret = 0;
 201  out_unlock:
 202         mutex_unlock(&sdata->local->sta_mtx);
 203
 204         return ret;
 205 }
 206
 207 static int ieee80211_get_key(struct wiphy *wiphy, struct net_device *dev,
 208                              u8 key_idx, bool pairwise, const u8 *mac_addr,
 209                              void *cookie,
 210                              void (*callback)(void *cookie,
 211                                               struct key_params *params))
 212 {
 213         struct ieee80211_sub_if_data *sdata;
 214         struct sta_info *sta = NULL;
 215         u8 seq[6] = {0};
 216         struct key_params params;
 217         struct ieee80211_key *key = NULL;
 218         u32 iv32;
 219         u16 iv16;
 220         int err = -ENOENT;
 221
 222         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 223
 224         rcu_read_lock();
 225
 226         if (mac_addr) {
 227                 sta = sta_info_get_bss(sdata, mac_addr);
 228                 if (!sta)
 229                         goto out;
 230
 231                 if (pairwise)
 232                         key = sta->ptk;
 233                 else if (key_idx < NUM_DEFAULT_KEYS)
 234                         key = sta->gtk[key_idx];
 235         } else
 236                 key = sdata->keys[key_idx];
 237
 238         if (!key)
 239                 goto out;
 240
 241         memset(&params, 0, sizeof(params));
 242
 243         params.cipher = key->conf.cipher;
 244
 245         switch (key->conf.cipher) {
 246         case WLAN_CIPHER_SUITE_TKIP:
 247                 iv32 = key->u.tkip.tx.iv32;
 248                 iv16 = key->u.tkip.tx.iv16;
 249
 250                 if (key->flags & KEY_FLAG_UPLOADED_TO_HARDWARE)
 251                         drv_get_tkip_seq(sdata->local,
 252                                          key->conf.hw_key_idx,
 253                                          &iv32, &iv16);
 254
 255                 seq[0] = iv16 & 0xff;
 256                 seq[1] = (iv16 >> 8) & 0xff;
 257                 seq[2] = iv32 & 0xff;
 258                 seq[3] = (iv32 >> 8) & 0xff;
 259                 seq[4] = (iv32 >> 16) & 0xff;
 260                 seq[5] = (iv32 >> 24) & 0xff;
 261                 params.seq = seq;
 262                 params.seq_len = 6;
 263                 break;
 264         case WLAN_CIPHER_SUITE_CCMP:
 265                 seq[0] = key->u.ccmp.tx_pn[5];
 266                 seq[1] = key->u.ccmp.tx_pn[4];
 267                 seq[2] = key->u.ccmp.tx_pn[3];
 268                 seq[3] = key->u.ccmp.tx_pn[2];
 269                 seq[4] = key->u.ccmp.tx_pn[1];
 270                 seq[5] = key->u.ccmp.tx_pn[0];
 271                 params.seq = seq;
 272                 params.seq_len = 6;
 273                 break;
 274         case WLAN_CIPHER_SUITE_AES_CMAC:
 275                 seq[0] = key->u.aes_cmac.tx_pn[5];
 276                 seq[1] = key->u.aes_cmac.tx_pn[4];
 277                 seq[2] = key->u.aes_cmac.tx_pn[3];
 278                 seq[3] = key->u.aes_cmac.tx_pn[2];
 279                 seq[4] = key->u.aes_cmac.tx_pn[1];
 280                 seq[5] = key->u.aes_cmac.tx_pn[0];
 281                 params.seq = seq;
 282                 params.seq_len = 6;
 283                 break;
 284         }
 285
 286         params.key = key->conf.key;
 287         params.key_len = key->conf.keylen;
 288
 289         callback(cookie, &params);
 290         err = 0;
 291
 292  out:
 293         rcu_read_unlock();
 294         return err;
 295 }
 296
 297 static int ieee80211_config_default_key(struct wiphy *wiphy,
 298                                         struct net_device *dev,
 299                                         u8 key_idx)
 300 {
 301         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 302
 303         ieee80211_set_default_key(sdata, key_idx);
 304
 305         return 0;
 306 }
 307
 308 static int ieee80211_config_default_mgmt_key(struct wiphy *wiphy,
 309                                              struct net_device *dev,
 310                                              u8 key_idx)
 311 {
 312         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 313
 314         ieee80211_set_default_mgmt_key(sdata, key_idx);
 315
 316         return 0;
 317 }
 318
 319 static void sta_set_sinfo(struct sta_info *sta, struct station_info *sinfo)
 320 {
 321         struct ieee80211_sub_if_data *sdata = sta->sdata;
 322
 323         sinfo->generation = sdata->local->sta_generation;
 324
 325         sinfo->filled = STATION_INFO_INACTIVE_TIME |
 326                         STATION_INFO_RX_BYTES |
 327                         STATION_INFO_TX_BYTES |
 328                         STATION_INFO_RX_PACKETS |
 329                         STATION_INFO_TX_PACKETS |
 330                         STATION_INFO_TX_RETRIES |
 331                         STATION_INFO_TX_FAILED |
 332                         STATION_INFO_TX_BITRATE |
 333                         STATION_INFO_RX_DROP_MISC;
 334
 335         sinfo->inactive_time = jiffies_to_msecs(jiffies - sta->last_rx);
 336         sinfo->rx_bytes = sta->rx_bytes;
 337         sinfo->tx_bytes = sta->tx_bytes;
 338         sinfo->rx_packets = sta->rx_packets;
 339         sinfo->tx_packets = sta->tx_packets;
 340         sinfo->tx_retries = sta->tx_retry_count;
 341         sinfo->tx_failed = sta->tx_retry_failed;
 342         sinfo->rx_dropped_misc = sta->rx_dropped;
 343
 344         if ((sta->local->hw.flags & IEEE80211_HW_SIGNAL_DBM) ||
 345             (sta->local->hw.flags & IEEE80211_HW_SIGNAL_UNSPEC)) {
 346                 sinfo->filled |= STATION_INFO_SIGNAL | STATION_INFO_SIGNAL_AVG;
 347                 sinfo->signal = (s8)sta->last_signal;
 348                 sinfo->signal_avg = (s8) -ewma_read(&sta->avg_signal);
 349         }
 350
 351         sinfo->txrate.flags = 0;
 352         if (sta->last_tx_rate.flags & IEEE80211_TX_RC_MCS)
 353                 sinfo->txrate.flags |= RATE_INFO_FLAGS_MCS;
 354         if (sta->last_tx_rate.flags & IEEE80211_TX_RC_40_MHZ_WIDTH)
 355                 sinfo->txrate.flags |= RATE_INFO_FLAGS_40_MHZ_WIDTH;
 356         if (sta->last_tx_rate.flags & IEEE80211_TX_RC_SHORT_GI)
 357                 sinfo->txrate.flags |= RATE_INFO_FLAGS_SHORT_GI;
 358
 359         if (!(sta->last_tx_rate.flags & IEEE80211_TX_RC_MCS)) {
 360                 struct ieee80211_supported_band *sband;
 361                 sband = sta->local->hw.wiphy->bands[
 362                                 sta->local->hw.conf.channel->band];
 363                 sinfo->txrate.legacy =
 364                         sband->bitrates[sta->last_tx_rate.idx].bitrate;
 365         } else
 366                 sinfo->txrate.mcs = sta->last_tx_rate.idx;
 367
 368         if (ieee80211_vif_is_mesh(&sdata->vif)) {
 369 #ifdef CONFIG_MAC80211_MESH
 370                 sinfo->filled |= STATION_INFO_LLID |
 371                                  STATION_INFO_PLID |
 372                                  STATION_INFO_PLINK_STATE;
 373
 374                 sinfo->llid = le16_to_cpu(sta->llid);
 375                 sinfo->plid = le16_to_cpu(sta->plid);
 376                 sinfo->plink_state = sta->plink_state;
 377 #endif
 378         }
 379 }
 380
 381
 382 static int ieee80211_dump_station(struct wiphy *wiphy, struct net_device *dev,
 383                                  int idx, u8 *mac, struct station_info *sinfo)
 384 {
 385         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 386         struct sta_info *sta;
 387         int ret = -ENOENT;
 388
 389         rcu_read_lock();
 390
 391         sta = sta_info_get_by_idx(sdata, idx);
 392         if (sta) {
 393                 ret = 0;
 394                 memcpy(mac, sta->sta.addr, ETH_ALEN);
 395                 sta_set_sinfo(sta, sinfo);
 396         }
 397
 398         rcu_read_unlock();
 399
 400         return ret;
 401 }
 402
 403 static int ieee80211_dump_survey(struct wiphy *wiphy, struct net_device *dev,
 404                                  int idx, struct survey_info *survey)
 405 {
 406         struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
 407
 408         return drv_get_survey(local, idx, survey);
 409 }
 410
 411 static int ieee80211_get_station(struct wiphy *wiphy, struct net_device *dev,
 412                                  u8 *mac, struct station_info *sinfo)
 413 {
 414         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 415         struct sta_info *sta;
 416         int ret = -ENOENT;
 417
 418         rcu_read_lock();
 419
 420         sta = sta_info_get_bss(sdata, mac);
 421         if (sta) {
 422                 ret = 0;
 423                 sta_set_sinfo(sta, sinfo);
 424         }
 425
 426         rcu_read_unlock();
 427
 428         return ret;
 429 }
 430
 431 /*
 432  * This handles both adding a beacon and setting new beacon info
 433  */
 434 static int ieee80211_config_beacon(struct ieee80211_sub_if_data *sdata,
 435                                    struct beacon_parameters *params)
 436 {
 437         struct beacon_data *new, *old;
 438         int new_head_len, new_tail_len;
 439         int size;
 440         int err = -EINVAL;
 441
 442         old = sdata->u.ap.beacon;
 443
 444         /* head must not be zero-length */
 445         if (params->head && !params->head_len)
 446                 return -EINVAL;
 447
 448         /*
 449          * This is a kludge. beacon interval should really be part
 450          * of the beacon information.
 451          */
 452         if (params->interval &&
 453             (sdata->vif.bss_conf.beacon_int != params->interval)) {
 454                 sdata->vif.bss_conf.beacon_int = params->interval;
 455                 ieee80211_bss_info_change_notify(sdata,
 456                                                  BSS_CHANGED_BEACON_INT);
 457         }
 458
 459         /* Need to have a beacon head if we don't have one yet */
 460         if (!params->head && !old)
 461                 return err;
 462
 463         /* sorry, no way to start beaconing without dtim period */
 464         if (!params->dtim_period && !old)
 465                 return err;
 466
 467         /* new or old head? */
 468         if (params->head)
 469                 new_head_len = params->head_len;
 470         else
 471                 new_head_len = old->head_len;
 472
 473         /* new or old tail? */
 474         if (params->tail || !old)
 475                 /* params->tail_len will be zero for !params->tail */
 476                 new_tail_len = params->tail_len;
 477         else
 478                 new_tail_len = old->tail_len;
 479
 480         size = sizeof(*new) + new_head_len + new_tail_len;
 481
 482         new = kzalloc(size, GFP_KERNEL);
 483         if (!new)
 484                 return -ENOMEM;
 485
 486         /* start filling the new info now */
 487
 488         /* new or old dtim period? */
 489         if (params->dtim_period)
 490                 new->dtim_period = params->dtim_period;
 491         else
 492                 new->dtim_period = old->dtim_period;
 493
 494         /*
 495          * pointers go into the block we allocated,
 496          * memory is | beacon_data | head | tail |
 497          */
 498         new->head = ((u8 *) new) + sizeof(*new);
 499         new->tail = new->head + new_head_len;
 500         new->head_len = new_head_len;
 501         new->tail_len = new_tail_len;
 502
 503         /* copy in head */
 504         if (params->head)
 505                 memcpy(new->head, params->head, new_head_len);
 506         else
 507                 memcpy(new->head, old->head, new_head_len);
 508
 509         /* copy in optional tail */
 510         if (params->tail)
 511                 memcpy(new->tail, params->tail, new_tail_len);
 512         else
 513                 if (old)
 514                         memcpy(new->tail, old->tail, new_tail_len);
 515
 516         sdata->vif.bss_conf.dtim_period = new->dtim_period;
 517
 518         rcu_assign_pointer(sdata->u.ap.beacon, new);
 519
 520         synchronize_rcu();
 521
 522         kfree(old);
 523
 524         ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_BEACON_ENABLED |
 525                                                 BSS_CHANGED_BEACON);
 526         return 0;
 527 }
 528
 529 static int ieee80211_add_beacon(struct wiphy *wiphy, struct net_device *dev,
 530                                 struct beacon_parameters *params)
 531 {
 532         struct ieee80211_sub_if_data *sdata;
 533         struct beacon_data *old;
 534
 535         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 536
 537         old = sdata->u.ap.beacon;
 538
 539         if (old)
 540                 return -EALREADY;
 541
 542         return ieee80211_config_beacon(sdata, params);
 543 }
 544
 545 static int ieee80211_set_beacon(struct wiphy *wiphy, struct net_device *dev,
 546                                 struct beacon_parameters *params)
 547 {
 548         struct ieee80211_sub_if_data *sdata;
 549         struct beacon_data *old;
 550
 551         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 552
 553         old = sdata->u.ap.beacon;
 554
 555         if (!old)
 556                 return -ENOENT;
 557
 558         return ieee80211_config_beacon(sdata, params);
 559 }
 560
 561 static int ieee80211_del_beacon(struct wiphy *wiphy, struct net_device *dev)
 562 {
 563         struct ieee80211_sub_if_data *sdata;
 564         struct beacon_data *old;
 565
 566         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 567
 568         old = sdata->u.ap.beacon;
 569
 570         if (!old)
 571                 return -ENOENT;
 572
 573         rcu_assign_pointer(sdata->u.ap.beacon, NULL);
 574         synchronize_rcu();
 575         kfree(old);
 576
 577         ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_BEACON_ENABLED);
 578         return 0;
 579 }
 580
 581 /* Layer 2 Update frame (802.2 Type 1 LLC XID Update response) */
 582 struct iapp_layer2_update {
 583         u8 da[ETH_ALEN];        /* broadcast */
 584         u8 sa[ETH_ALEN];        /* STA addr */
 585         __be16 len;             /* 6 */
 586         u8 dsap;                /* 0 */
 587         u8 ssap;                /* 0 */
 588         u8 control;
 589         u8 xid_info[3];
 590 } __packed;
 591
 592 static void ieee80211_send_layer2_update(struct sta_info *sta)
 593 {
 594         struct iapp_layer2_update *msg;
 595         struct sk_buff *skb;
 596
 597         /* Send Level 2 Update Frame to update forwarding tables in layer 2
 598          * bridge devices */
 599
 600         skb = dev_alloc_skb(sizeof(*msg));
 601         if (!skb)
 602                 return;
 603         msg = (struct iapp_layer2_update *)skb_put(skb, sizeof(*msg));
 604
 605         /* 802.2 Type 1 Logical Link Control (LLC) Exchange Identifier (XID)
 606          * Update response frame; IEEE Std 802.2-1998, 5.4.1.2.1 */
 607
 608         memset(msg->da, 0xff, ETH_ALEN);
 609         memcpy(msg->sa, sta->sta.addr, ETH_ALEN);
 610         msg->len = htons(6);
 611         msg->dsap = 0;
 612         msg->ssap = 0x01;       /* NULL LSAP, CR Bit: Response */
 613         msg->control = 0xaf;    /* XID response lsb.1111F101.
 614                                  * F=0 (no poll command; unsolicited frame) */
 615         msg->xid_info[0] = 0x81;        /* XID format identifier */
 616         msg->xid_info[1] = 1;   /* LLC types/classes: Type 1 LLC */
 617         msg->xid_info[2] = 0;   /* XID sender's receive window size (RW) */
 618
 619         skb->dev = sta->sdata->dev;
 620         skb->protocol = eth_type_trans(skb, sta->sdata->dev);
 621         memset(skb->cb, 0, sizeof(skb->cb));
 622         netif_rx_ni(skb);
 623 }
 624
 625 static void sta_apply_parameters(struct ieee80211_local *local,
 626                                  struct sta_info *sta,
 627                                  struct station_parameters *params)
 628 {
 629         unsigned long flags;
 630         u32 rates;
 631         int i, j;
 632         struct ieee80211_supported_band *sband;
 633         struct ieee80211_sub_if_data *sdata = sta->sdata;
 634         u32 mask, set;
 635
 636         sband = local->hw.wiphy->bands[local->oper_channel->band];
 637
 638         spin_lock_irqsave(&sta->flaglock, flags);
 639         mask = params->sta_flags_mask;
 640         set = params->sta_flags_set;
 641
 642         if (mask & BIT(NL80211_STA_FLAG_AUTHORIZED)) {
 643                 sta->flags &= ~WLAN_STA_AUTHORIZED;
 644                 if (set & BIT(NL80211_STA_FLAG_AUTHORIZED))
 645                         sta->flags |= WLAN_STA_AUTHORIZED;
 646         }
 647
 648         if (mask & BIT(NL80211_STA_FLAG_SHORT_PREAMBLE)) {
 649                 sta->flags &= ~WLAN_STA_SHORT_PREAMBLE;
 650                 if (set & BIT(NL80211_STA_FLAG_SHORT_PREAMBLE))
 651                         sta->flags |= WLAN_STA_SHORT_PREAMBLE;
 652         }
 653
 654         if (mask & BIT(NL80211_STA_FLAG_WME)) {
 655                 sta->flags &= ~WLAN_STA_WME;
 656                 if (set & BIT(NL80211_STA_FLAG_WME))
 657                         sta->flags |= WLAN_STA_WME;
 658         }
 659
 660         if (mask & BIT(NL80211_STA_FLAG_MFP)) {
 661                 sta->flags &= ~WLAN_STA_MFP;
 662                 if (set & BIT(NL80211_STA_FLAG_MFP))
 663                         sta->flags |= WLAN_STA_MFP;
 664         }
 665         spin_unlock_irqrestore(&sta->flaglock, flags);
 666
 667         /*
 668          * cfg80211 validates this (1-2007) and allows setting the AID
 669          * only when creating a new station entry
 670          */
 671         if (params->aid)
 672                 sta->sta.aid = params->aid;
 673
 674         /*
 675          * FIXME: updating the following information is racy when this
 676          *        function is called from ieee80211_change_station().
 677          *        However, all this information should be static so
 678          *        maybe we should just reject attemps to change it.
 679          */
 680
 681         if (params->listen_interval >= 0)
 682                 sta->listen_interval = params->listen_interval;
 683
 684         if (params->supported_rates) {
 685                 rates = 0;
 686
 687                 for (i = 0; i < params->supported_rates_len; i++) {
 688                         int rate = (params->supported_rates[i] & 0x7f) * 5;
 689                         for (j = 0; j < sband->n_bitrates; j++) {
 690                                 if (sband->bitrates[j].bitrate == rate)
 691                                         rates |= BIT(j);
 692                         }
 693                 }
 694                 sta->sta.supp_rates[local->oper_channel->band] = rates;
 695         }
 696
 697         if (params->ht_capa)
 698                 ieee80211_ht_cap_ie_to_sta_ht_cap(sband,
 699                                                   params->ht_capa,
 700                                                   &sta->sta.ht_cap);
 701
 702         if (ieee80211_vif_is_mesh(&sdata->vif) && params->plink_action) {
 703                 switch (params->plink_action) {
 704                 case PLINK_ACTION_OPEN:
 705                         mesh_plink_open(sta);
 706                         break;
 707                 case PLINK_ACTION_BLOCK:
 708                         mesh_plink_block(sta);
 709                         break;
 710                 }
 711         }
 712 }
 713
 714 static int ieee80211_add_station(struct wiphy *wiphy, struct net_device *dev,
 715                                  u8 *mac, struct station_parameters *params)
 716 {
 717         struct ieee80211_local *local = wiphy_priv(wiphy);
 718         struct sta_info *sta;
 719         struct ieee80211_sub_if_data *sdata;
 720         int err;
 721         int layer2_update;
 722
 723         if (params->vlan) {
 724                 sdata = IEEE80211_DEV_TO_SUB_IF(params->vlan);
 725
 726                 if (sdata->vif.type != NL80211_IFTYPE_AP_VLAN &&
 727                     sdata->vif.type != NL80211_IFTYPE_AP)
 728                         return -EINVAL;
 729         } else
 730                 sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 731
 732         if (compare_ether_addr(mac, sdata->vif.addr) == 0)
 733                 return -EINVAL;
 734
 735         if (is_multicast_ether_addr(mac))
 736                 return -EINVAL;
 737
 738         sta = sta_info_alloc(sdata, mac, GFP_KERNEL);
 739         if (!sta)
 740                 return -ENOMEM;
 741
 742         sta->flags = WLAN_STA_AUTH | WLAN_STA_ASSOC;
 743
 744         sta_apply_parameters(local, sta, params);
 745
 746         rate_control_rate_init(sta);
 747
 748         layer2_update = sdata->vif.type == NL80211_IFTYPE_AP_VLAN ||
 749                 sdata->vif.type == NL80211_IFTYPE_AP;
 750
 751         err = sta_info_insert_rcu(sta);
 752         if (err) {
 753                 rcu_read_unlock();
 754                 return err;
 755         }
 756
 757         if (layer2_update)
 758                 ieee80211_send_layer2_update(sta);
 759
 760         rcu_read_unlock();
 761
 762         return 0;
 763 }
 764
 765 static int ieee80211_del_station(struct wiphy *wiphy, struct net_device *dev,
 766                                  u8 *mac)
 767 {
 768         struct ieee80211_local *local = wiphy_priv(wiphy);
 769         struct ieee80211_sub_if_data *sdata;
 770
 771         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 772
 773         if (mac)
 774                 return sta_info_destroy_addr_bss(sdata, mac);
 775
 776         sta_info_flush(local, sdata);
 777         return 0;
 778 }
 779
 780 static int ieee80211_change_station(struct wiphy *wiphy,
 781                                     struct net_device *dev,
 782                                     u8 *mac,
 783                                     struct station_parameters *params)
 784 {
 785         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 786         struct ieee80211_local *local = wiphy_priv(wiphy);
 787         struct sta_info *sta;
 788         struct ieee80211_sub_if_data *vlansdata;
 789
 790         rcu_read_lock();
 791
 792         sta = sta_info_get_bss(sdata, mac);
 793         if (!sta) {
 794                 rcu_read_unlock();
 795                 return -ENOENT;
 796         }
 797
 798         if (params->vlan && params->vlan != sta->sdata->dev) {
 799                 vlansdata = IEEE80211_DEV_TO_SUB_IF(params->vlan);
 800
 801                 if (vlansdata->vif.type != NL80211_IFTYPE_AP_VLAN &&
 802                     vlansdata->vif.type != NL80211_IFTYPE_AP) {
 803                         rcu_read_unlock();
 804                         return -EINVAL;
 805                 }
 806
 807                 if (params->vlan->ieee80211_ptr->use_4addr) {
 808                         if (vlansdata->u.vlan.sta) {
 809                                 rcu_read_unlock();
 810                                 return -EBUSY;
 811                         }
 812
 813                         rcu_assign_pointer(vlansdata->u.vlan.sta, sta);
 814                 }
 815
 816                 sta->sdata = vlansdata;
 817                 ieee80211_send_layer2_update(sta);
 818         }
 819
 820         sta_apply_parameters(local, sta, params);
 821
 822         rcu_read_unlock();
 823
 824         return 0;
 825 }
 826
 827 #ifdef CONFIG_MAC80211_MESH
 828 static int ieee80211_add_mpath(struct wiphy *wiphy, struct net_device *dev,
 829                                  u8 *dst, u8 *next_hop)
 830 {
 831         struct ieee80211_sub_if_data *sdata;
 832         struct mesh_path *mpath;
 833         struct sta_info *sta;
 834         int err;
 835
 836         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 837
 838         rcu_read_lock();
 839         sta = sta_info_get(sdata, next_hop);
 840         if (!sta) {
 841                 rcu_read_unlock();
 842                 return -ENOENT;
 843         }
 844
 845         err = mesh_path_add(dst, sdata);
 846         if (err) {
 847                 rcu_read_unlock();
 848                 return err;
 849         }
 850
 851         mpath = mesh_path_lookup(dst, sdata);
 852         if (!mpath) {
 853                 rcu_read_unlock();
 854                 return -ENXIO;
 855         }
 856         mesh_path_fix_nexthop(mpath, sta);
 857
 858         rcu_read_unlock();
 859         return 0;
 860 }
 861
 862 static int ieee80211_del_mpath(struct wiphy *wiphy, struct net_device *dev,
 863                                  u8 *dst)
 864 {
 865         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 866
 867         if (dst)
 868                 return mesh_path_del(dst, sdata);
 869
 870         mesh_path_flush(sdata);
 871         return 0;
 872 }
 873
 874 static int ieee80211_change_mpath(struct wiphy *wiphy,
 875                                     struct net_device *dev,
 876                                     u8 *dst, u8 *next_hop)
 877 {
 878         struct ieee80211_sub_if_data *sdata;
 879         struct mesh_path *mpath;
 880         struct sta_info *sta;
 881
 882         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 883
 884         rcu_read_lock();
 885
 886         sta = sta_info_get(sdata, next_hop);
 887         if (!sta) {
 888                 rcu_read_unlock();
 889                 return -ENOENT;
 890         }
 891
 892         mpath = mesh_path_lookup(dst, sdata);
 893         if (!mpath) {
 894                 rcu_read_unlock();
 895                 return -ENOENT;
 896         }
 897
 898         mesh_path_fix_nexthop(mpath, sta);
 899
 900         rcu_read_unlock();
 901         return 0;
 902 }
 903
 904 static void mpath_set_pinfo(struct mesh_path *mpath, u8 *next_hop,
 905                             struct mpath_info *pinfo)
 906 {
 907         if (mpath->next_hop)
 908                 memcpy(next_hop, mpath->next_hop->sta.addr, ETH_ALEN);
 909         else
 910                 memset(next_hop, 0, ETH_ALEN);
 911
 912         pinfo->generation = mesh_paths_generation;
 913
 914         pinfo->filled = MPATH_INFO_FRAME_QLEN |
 915                         MPATH_INFO_SN |
 916                         MPATH_INFO_METRIC |
 917                         MPATH_INFO_EXPTIME |
 918                         MPATH_INFO_DISCOVERY_TIMEOUT |
 919                         MPATH_INFO_DISCOVERY_RETRIES |
 920                         MPATH_INFO_FLAGS;
 921
 922         pinfo->frame_qlen = mpath->frame_queue.qlen;
 923         pinfo->sn = mpath->sn;
 924         pinfo->metric = mpath->metric;
 925         if (time_before(jiffies, mpath->exp_time))
 926                 pinfo->exptime = jiffies_to_msecs(mpath->exp_time - jiffies);
 927         pinfo->discovery_timeout =
 928                         jiffies_to_msecs(mpath->discovery_timeout);
 929         pinfo->discovery_retries = mpath->discovery_retries;
 930         pinfo->flags = 0;
 931         if (mpath->flags & MESH_PATH_ACTIVE)
 932                 pinfo->flags |= NL80211_MPATH_FLAG_ACTIVE;
 933         if (mpath->flags & MESH_PATH_RESOLVING)
 934                 pinfo->flags |= NL80211_MPATH_FLAG_RESOLVING;
 935         if (mpath->flags & MESH_PATH_SN_VALID)
 936                 pinfo->flags |= NL80211_MPATH_FLAG_SN_VALID;
 937         if (mpath->flags & MESH_PATH_FIXED)
 938                 pinfo->flags |= NL80211_MPATH_FLAG_FIXED;
 939         if (mpath->flags & MESH_PATH_RESOLVING)
 940                 pinfo->flags |= NL80211_MPATH_FLAG_RESOLVING;
 941
 942         pinfo->flags = mpath->flags;
 943 }
 944
 945 static int ieee80211_get_mpath(struct wiphy *wiphy, struct net_device *dev,
 946                                u8 *dst, u8 *next_hop, struct mpath_info *pinfo)
 947
 948 {
 949         struct ieee80211_sub_if_data *sdata;
 950         struct mesh_path *mpath;
 951
 952         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 953
 954         rcu_read_lock();
 955         mpath = mesh_path_lookup(dst, sdata);
 956         if (!mpath) {
 957                 rcu_read_unlock();
 958                 return -ENOENT;
 959         }
 960         memcpy(dst, mpath->dst, ETH_ALEN);
 961         mpath_set_pinfo(mpath, next_hop, pinfo);
 962         rcu_read_unlock();
 963         return 0;
 964 }
 965
 966 static int ieee80211_dump_mpath(struct wiphy *wiphy, struct net_device *dev,
 967                                  int idx, u8 *dst, u8 *next_hop,
 968                                  struct mpath_info *pinfo)
 969 {
 970         struct ieee80211_sub_if_data *sdata;
 971         struct mesh_path *mpath;
 972
 973         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 974
 975         rcu_read_lock();
 976         mpath = mesh_path_lookup_by_idx(idx, sdata);
 977         if (!mpath) {
 978                 rcu_read_unlock();
 979                 return -ENOENT;
 980         }
 981         memcpy(dst, mpath->dst, ETH_ALEN);
 982         mpath_set_pinfo(mpath, next_hop, pinfo);
 983         rcu_read_unlock();
 984         return 0;
 985 }
 986
 987 static int ieee80211_get_mesh_params(struct wiphy *wiphy,
 988                                 struct net_device *dev,
 989                                 struct mesh_config *conf)
 990 {
 991         struct ieee80211_sub_if_data *sdata;
 992         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 993
 994         memcpy(conf, &(sdata->u.mesh.mshcfg), sizeof(struct mesh_config));
 995         return 0;
 996 }
 997
 998 static inline bool _chg_mesh_attr(enum nl80211_meshconf_params parm, u32 mask)
 999 {
1000         return (mask >> (parm-1)) & 0x1;
1001 }
1002
1003 static int ieee80211_set_mesh_params(struct wiphy *wiphy,
1004                                 struct net_device *dev,
1005                                 const struct mesh_config *nconf, u32 mask)
1006 {
1007         struct mesh_config *conf;
1008         struct ieee80211_sub_if_data *sdata;
1009         struct ieee80211_if_mesh *ifmsh;
1010
1011         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1012         ifmsh = &sdata->u.mesh;
1013
1014         /* Set the config options which we are interested in setting */
1015         conf = &(sdata->u.mesh.mshcfg);
1016         if (_chg_mesh_attr(NL80211_MESHCONF_RETRY_TIMEOUT, mask))
1017                 conf->dot11MeshRetryTimeout = nconf->dot11MeshRetryTimeout;
1018         if (_chg_mesh_attr(NL80211_MESHCONF_CONFIRM_TIMEOUT, mask))
1019                 conf->dot11MeshConfirmTimeout = nconf->dot11MeshConfirmTimeout;
1020         if (_chg_mesh_attr(NL80211_MESHCONF_HOLDING_TIMEOUT, mask))
1021                 conf->dot11MeshHoldingTimeout = nconf->dot11MeshHoldingTimeout;
1022         if (_chg_mesh_attr(NL80211_MESHCONF_MAX_PEER_LINKS, mask))
1023                 conf->dot11MeshMaxPeerLinks = nconf->dot11MeshMaxPeerLinks;
1024         if (_chg_mesh_attr(NL80211_MESHCONF_MAX_RETRIES, mask))
1025                 conf->dot11MeshMaxRetries = nconf->dot11MeshMaxRetries;
1026         if (_chg_mesh_attr(NL80211_MESHCONF_TTL, mask))
1027                 conf->dot11MeshTTL = nconf->dot11MeshTTL;
1028         if (_chg_mesh_attr(NL80211_MESHCONF_AUTO_OPEN_PLINKS, mask))
1029                 conf->auto_open_plinks = nconf->auto_open_plinks;
1030         if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES, mask))
1031                 conf->dot11MeshHWMPmaxPREQretries =
1032                         nconf->dot11MeshHWMPmaxPREQretries;
1033         if (_chg_mesh_attr(NL80211_MESHCONF_PATH_REFRESH_TIME, mask))
1034                 conf->path_refresh_time = nconf->path_refresh_time;
1035         if (_chg_mesh_attr(NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT, mask))
1036                 conf->min_discovery_timeout = nconf->min_discovery_timeout;
1037         if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT, mask))
1038                 conf->dot11MeshHWMPactivePathTimeout =
1039                         nconf->dot11MeshHWMPactivePathTimeout;
1040         if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL, mask))
1041                 conf->dot11MeshHWMPpreqMinInterval =
1042                         nconf->dot11MeshHWMPpreqMinInterval;
1043         if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME,
1044                            mask))
1045                 conf->dot11MeshHWMPnetDiameterTraversalTime =
1046                         nconf->dot11MeshHWMPnetDiameterTraversalTime;
1047         if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_ROOTMODE, mask)) {
1048                 conf->dot11MeshHWMPRootMode = nconf->dot11MeshHWMPRootMode;
1049                 ieee80211_mesh_root_setup(ifmsh);
1050         }
1051         return 0;
1052 }
1053
1054 #endif
1055
1056 static int ieee80211_change_bss(struct wiphy *wiphy,
1057                                 struct net_device *dev,
1058                                 struct bss_parameters *params)
1059 {
1060         struct ieee80211_sub_if_data *sdata;
1061         u32 changed = 0;
1062
1063         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1064
1065         if (params->use_cts_prot >= 0) {
1066                 sdata->vif.bss_conf.use_cts_prot = params->use_cts_prot;
1067                 changed |= BSS_CHANGED_ERP_CTS_PROT;
1068         }
1069         if (params->use_short_preamble >= 0) {
1070                 sdata->vif.bss_conf.use_short_preamble =
1071                         params->use_short_preamble;
1072                 changed |= BSS_CHANGED_ERP_PREAMBLE;
1073         }
1074
1075         if (!sdata->vif.bss_conf.use_short_slot &&
1076             sdata->local->hw.conf.channel->band == IEEE80211_BAND_5GHZ) {
1077                 sdata->vif.bss_conf.use_short_slot = true;
1078                 changed |= BSS_CHANGED_ERP_SLOT;
1079         }
1080
1081         if (params->use_short_slot_time >= 0) {
1082                 sdata->vif.bss_conf.use_short_slot =
1083                         params->use_short_slot_time;
1084                 changed |= BSS_CHANGED_ERP_SLOT;
1085         }
1086
1087         if (params->basic_rates) {
1088                 int i, j;
1089                 u32 rates = 0;
1090                 struct ieee80211_local *local = wiphy_priv(wiphy);
1091                 struct ieee80211_supported_band *sband =
1092                         wiphy->bands[local->oper_channel->band];
1093
1094                 for (i = 0; i < params->basic_rates_len; i++) {
1095                         int rate = (params->basic_rates[i] & 0x7f) * 5;
1096                         for (j = 0; j < sband->n_bitrates; j++) {
1097                                 if (sband->bitrates[j].bitrate == rate)
1098                                         rates |= BIT(j);
1099                         }
1100                 }
1101                 sdata->vif.bss_conf.basic_rates = rates;
1102                 changed |= BSS_CHANGED_BASIC_RATES;
1103         }
1104
1105         if (params->ap_isolate >= 0) {
1106                 if (params->ap_isolate)
1107                         sdata->flags |= IEEE80211_SDATA_DONT_BRIDGE_PACKETS;
1108                 else
1109                         sdata->flags &= ~IEEE80211_SDATA_DONT_BRIDGE_PACKETS;
1110         }
1111
1112         ieee80211_bss_info_change_notify(sdata, changed);
1113
1114         return 0;
1115 }
1116
1117 static int ieee80211_set_txq_params(struct wiphy *wiphy,
1118                                     struct ieee80211_txq_params *params)
1119 {
1120         struct ieee80211_local *local = wiphy_priv(wiphy);
1121         struct ieee80211_tx_queue_params p;
1122
1123         if (!local->ops->conf_tx)
1124                 return -EOPNOTSUPP;
1125
1126         memset(&p, 0, sizeof(p));
1127         p.aifs = params->aifs;
1128         p.cw_max = params->cwmax;
1129         p.cw_min = params->cwmin;
1130         p.txop = params->txop;
1131
1132         /*
1133          * Setting tx queue params disables u-apsd because it's only
1134          * called in master mode.
1135          */
1136         p.uapsd = false;
1137
1138         if (drv_conf_tx(local, params->queue, &p)) {
1139                 wiphy_debug(local->hw.wiphy,
1140                             "failed to set TX queue parameters for queue %d\n",
1141                             params->queue);
1142                 return -EINVAL;
1143         }
1144
1145         return 0;
1146 }
1147
1148 static int ieee80211_set_channel(struct wiphy *wiphy,
1149                                  struct net_device *netdev,
1150                                  struct ieee80211_channel *chan,
1151                                  enum nl80211_channel_type channel_type)
1152 {
1153         struct ieee80211_local *local = wiphy_priv(wiphy);
1154         struct ieee80211_sub_if_data *sdata = NULL;
1155
1156         if (netdev)
1157                 sdata = IEEE80211_DEV_TO_SUB_IF(netdev);
1158
1159         switch (ieee80211_get_channel_mode(local, NULL)) {
1160         case CHAN_MODE_HOPPING:
1161                 return -EBUSY;
1162         case CHAN_MODE_FIXED:
1163                 if (local->oper_channel != chan)
1164                         return -EBUSY;
1165                 if (!sdata && local->_oper_channel_type == channel_type)
1166                         return 0;
1167                 break;
1168         case CHAN_MODE_UNDEFINED:
1169                 break;
1170         }
1171
1172         local->oper_channel = chan;
1173
1174         if (!ieee80211_set_channel_type(local, sdata, channel_type))
1175                 return -EBUSY;
1176
1177         ieee80211_hw_config(local, IEEE80211_CONF_CHANGE_CHANNEL);
1178         if (sdata && sdata->vif.type != NL80211_IFTYPE_MONITOR)
1179                 ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_HT);
1180
1181         return 0;
1182 }
1183
1184 #ifdef CONFIG_PM
1185 static int ieee80211_suspend(struct wiphy *wiphy)
1186 {
1187         return __ieee80211_suspend(wiphy_priv(wiphy));
1188 }
1189
1190 static int ieee80211_resume(struct wiphy *wiphy)
1191 {
1192         return __ieee80211_resume(wiphy_priv(wiphy));
1193 }
1194 #else
1195 #define ieee80211_suspend NULL
1196 #define ieee80211_resume NULL
1197 #endif
1198
1199 static int ieee80211_scan(struct wiphy *wiphy,
1200                           struct net_device *dev,
1201                           struct cfg80211_scan_request *req)
1202 {
1203         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1204
1205         switch (ieee80211_vif_type_p2p(&sdata->vif)) {
1206         case NL80211_IFTYPE_STATION:
1207         case NL80211_IFTYPE_ADHOC:
1208         case NL80211_IFTYPE_MESH_POINT:
1209         case NL80211_IFTYPE_P2P_CLIENT:
1210                 break;
1211         case NL80211_IFTYPE_P2P_GO:
1212                 if (sdata->local->ops->hw_scan)
1213                         break;
1214                 /* FIXME: implement NoA while scanning in software */
1215                 return -EOPNOTSUPP;
1216         case NL80211_IFTYPE_AP:
1217                 if (sdata->u.ap.beacon)
1218                         return -EOPNOTSUPP;
1219                 break;
1220         default:
1221                 return -EOPNOTSUPP;
1222         }
1223
1224         return ieee80211_request_scan(sdata, req);
1225 }
1226
1227 static int ieee80211_auth(struct wiphy *wiphy, struct net_device *dev,
1228                           struct cfg80211_auth_request *req)
1229 {
1230         return ieee80211_mgd_auth(IEEE80211_DEV_TO_SUB_IF(dev), req);
1231 }
1232
1233 static int ieee80211_assoc(struct wiphy *wiphy, struct net_device *dev,
1234                            struct cfg80211_assoc_request *req)
1235 {
1236         struct ieee80211_local *local = wiphy_priv(wiphy);
1237         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1238
1239         switch (ieee80211_get_channel_mode(local, sdata)) {
1240         case CHAN_MODE_HOPPING:
1241                 return -EBUSY;
1242         case CHAN_MODE_FIXED:
1243                 if (local->oper_channel == req->bss->channel)
1244                         break;
1245                 return -EBUSY;
1246         case CHAN_MODE_UNDEFINED:
1247                 break;
1248         }
1249
1250         return ieee80211_mgd_assoc(IEEE80211_DEV_TO_SUB_IF(dev), req);
1251 }
1252
1253 static int ieee80211_deauth(struct wiphy *wiphy, struct net_device *dev,
1254                             struct cfg80211_deauth_request *req,
1255                             void *cookie)
1256 {
1257         return ieee80211_mgd_deauth(IEEE80211_DEV_TO_SUB_IF(dev),
1258                                     req, cookie);
1259 }
1260
1261 static int ieee80211_disassoc(struct wiphy *wiphy, struct net_device *dev,
1262                               struct cfg80211_disassoc_request *req,
1263                               void *cookie)
1264 {
1265         return ieee80211_mgd_disassoc(IEEE80211_DEV_TO_SUB_IF(dev),
1266                                       req, cookie);
1267 }
1268
1269 static int ieee80211_join_ibss(struct wiphy *wiphy, struct net_device *dev,
1270                                struct cfg80211_ibss_params *params)
1271 {
1272         struct ieee80211_local *local = wiphy_priv(wiphy);
1273         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1274
1275         switch (ieee80211_get_channel_mode(local, sdata)) {
1276         case CHAN_MODE_HOPPING:
1277                 return -EBUSY;
1278         case CHAN_MODE_FIXED:
1279                 if (!params->channel_fixed)
1280                         return -EBUSY;
1281                 if (local->oper_channel == params->channel)
1282                         break;
1283                 return -EBUSY;
1284         case CHAN_MODE_UNDEFINED:
1285                 break;
1286         }
1287
1288         return ieee80211_ibss_join(sdata, params);
1289 }
1290
1291 static int ieee80211_leave_ibss(struct wiphy *wiphy, struct net_device *dev)
1292 {
1293         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1294
1295         return ieee80211_ibss_leave(sdata);
1296 }
1297
1298 static int ieee80211_set_wiphy_params(struct wiphy *wiphy, u32 changed)
1299 {
1300         struct ieee80211_local *local = wiphy_priv(wiphy);
1301         int err;
1302
1303         if (changed & WIPHY_PARAM_FRAG_THRESHOLD) {
1304                 err = drv_set_frag_threshold(local, wiphy->frag_threshold);
1305
1306                 if (err)
1307                         return err;
1308         }
1309
1310         if (changed & WIPHY_PARAM_COVERAGE_CLASS) {
1311                 err = drv_set_coverage_class(local, wiphy->coverage_class);
1312
1313                 if (err)
1314                         return err;
1315         }
1316
1317         if (changed & WIPHY_PARAM_RTS_THRESHOLD) {
1318                 err = drv_set_rts_threshold(local, wiphy->rts_threshold);
1319
1320                 if (err)
1321                         return err;
1322         }
1323
1324         if (changed & WIPHY_PARAM_RETRY_SHORT)
1325                 local->hw.conf.short_frame_max_tx_count = wiphy->retry_short;
1326         if (changed & WIPHY_PARAM_RETRY_LONG)
1327                 local->hw.conf.long_frame_max_tx_count = wiphy->retry_long;
1328         if (changed &
1329             (WIPHY_PARAM_RETRY_SHORT | WIPHY_PARAM_RETRY_LONG))
1330                 ieee80211_hw_config(local, IEEE80211_CONF_CHANGE_RETRY_LIMITS);
1331
1332         return 0;
1333 }
1334
1335 static int ieee80211_set_tx_power(struct wiphy *wiphy,
1336                                   enum nl80211_tx_power_setting type, int mbm)
1337 {
1338         struct ieee80211_local *local = wiphy_priv(wiphy);
1339         struct ieee80211_channel *chan = local->hw.conf.channel;
1340         u32 changes = 0;
1341
1342         switch (type) {
1343         case NL80211_TX_POWER_AUTOMATIC:
1344                 local->user_power_level = -1;
1345                 break;
1346         case NL80211_TX_POWER_LIMITED:
1347                 if (mbm < 0 || (mbm % 100))
1348                         return -EOPNOTSUPP;
1349                 local->user_power_level = MBM_TO_DBM(mbm);
1350                 break;
1351         case NL80211_TX_POWER_FIXED:
1352                 if (mbm < 0 || (mbm % 100))
1353                         return -EOPNOTSUPP;
1354                 /* TODO: move to cfg80211 when it knows the channel */
1355                 if (MBM_TO_DBM(mbm) > chan->max_power)
1356                         return -EINVAL;
1357                 local->user_power_level = MBM_TO_DBM(mbm);
1358                 break;
1359         }
1360
1361         ieee80211_hw_config(local, changes);
1362
1363         return 0;
1364 }
1365
1366 static int ieee80211_get_tx_power(struct wiphy *wiphy, int *dbm)
1367 {
1368         struct ieee80211_local *local = wiphy_priv(wiphy);
1369
1370         *dbm = local->hw.conf.power_level;
1371
1372         return 0;
1373 }
1374
1375 static int ieee80211_set_wds_peer(struct wiphy *wiphy, struct net_device *dev,
1376                                   const u8 *addr)
1377 {
1378         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1379
1380         memcpy(&sdata->u.wds.remote_addr, addr, ETH_ALEN);
1381
1382         return 0;
1383 }
1384
1385 static void ieee80211_rfkill_poll(struct wiphy *wiphy)
1386 {
1387         struct ieee80211_local *local = wiphy_priv(wiphy);
1388
1389         drv_rfkill_poll(local);
1390 }
1391
1392 #ifdef CONFIG_NL80211_TESTMODE
1393 static int ieee80211_testmode_cmd(struct wiphy *wiphy, void *data, int len)
1394 {
1395         struct ieee80211_local *local = wiphy_priv(wiphy);
1396
1397         if (!local->ops->testmode_cmd)
1398                 return -EOPNOTSUPP;
1399
1400         return local->ops->testmode_cmd(&local->hw, data, len);
1401 }
1402 #endif
1403
1404 int __ieee80211_request_smps(struct ieee80211_sub_if_data *sdata,
1405                              enum ieee80211_smps_mode smps_mode)
1406 {
1407         const u8 *ap;
1408         enum ieee80211_smps_mode old_req;
1409         int err;
1410
1411         old_req = sdata->u.mgd.req_smps;
1412         sdata->u.mgd.req_smps = smps_mode;
1413
1414         if (old_req == smps_mode &&
1415             smps_mode != IEEE80211_SMPS_AUTOMATIC)
1416                 return 0;
1417
1418         /*
1419          * If not associated, or current association is not an HT
1420          * association, there's no need to send an action frame.
1421          */
1422         if (!sdata->u.mgd.associated ||
1423             sdata->vif.bss_conf.channel_type == NL80211_CHAN_NO_HT) {
1424                 mutex_lock(&sdata->local->iflist_mtx);
1425                 ieee80211_recalc_smps(sdata->local);
1426                 mutex_unlock(&sdata->local->iflist_mtx);
1427                 return 0;
1428         }
1429
1430         ap = sdata->u.mgd.associated->bssid;
1431
1432         if (smps_mode == IEEE80211_SMPS_AUTOMATIC) {
1433                 if (sdata->u.mgd.powersave)
1434                         smps_mode = IEEE80211_SMPS_DYNAMIC;
1435                 else
1436                         smps_mode = IEEE80211_SMPS_OFF;
1437         }
1438
1439         /* send SM PS frame to AP */
1440         err = ieee80211_send_smps_action(sdata, smps_mode,
1441                                          ap, ap);
1442         if (err)
1443                 sdata->u.mgd.req_smps = old_req;
1444
1445         return err;
1446 }
1447
1448 static int ieee80211_set_power_mgmt(struct wiphy *wiphy, struct net_device *dev,
1449                                     bool enabled, int timeout)
1450 {
1451         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1452         struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
1453
1454         if (sdata->vif.type != NL80211_IFTYPE_STATION)
1455                 return -EOPNOTSUPP;
1456
1457         if (!(local->hw.flags & IEEE80211_HW_SUPPORTS_PS))
1458                 return -EOPNOTSUPP;
1459
1460         if (enabled == sdata->u.mgd.powersave &&
1461             timeout == local->dynamic_ps_forced_timeout)
1462                 return 0;
1463
1464         sdata->u.mgd.powersave = enabled;
1465         local->dynamic_ps_forced_timeout = timeout;
1466
1467         /* no change, but if automatic follow powersave */
1468         mutex_lock(&sdata->u.mgd.mtx);
1469         __ieee80211_request_smps(sdata, sdata->u.mgd.req_smps);
1470         mutex_unlock(&sdata->u.mgd.mtx);
1471
1472         if (local->hw.flags & IEEE80211_HW_SUPPORTS_DYNAMIC_PS)
1473                 ieee80211_hw_config(local, IEEE80211_CONF_CHANGE_PS);
1474
1475         ieee80211_recalc_ps(local, -1);
1476
1477         return 0;
1478 }
1479
1480 static int ieee80211_set_cqm_rssi_config(struct wiphy *wiphy,
1481                                          struct net_device *dev,
1482                                          s32 rssi_thold, u32 rssi_hyst)
1483 {
1484         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1485         struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
1486         struct ieee80211_vif *vif = &sdata->vif;
1487         struct ieee80211_bss_conf *bss_conf = &vif->bss_conf;
1488
1489         if (rssi_thold == bss_conf->cqm_rssi_thold &&
1490             rssi_hyst == bss_conf->cqm_rssi_hyst)
1491                 return 0;
1492
1493         bss_conf->cqm_rssi_thold = rssi_thold;
1494         bss_conf->cqm_rssi_hyst = rssi_hyst;
1495
1496         if (!(local->hw.flags & IEEE80211_HW_SUPPORTS_CQM_RSSI)) {
1497                 if (sdata->vif.type != NL80211_IFTYPE_STATION)
1498                         return -EOPNOTSUPP;
1499                 return 0;
1500         }
1501
1502         /* tell the driver upon association, unless already associated */
1503         if (sdata->u.mgd.associated)
1504                 ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_CQM);
1505
1506         return 0;
1507 }
1508
1509 static int ieee80211_set_bitrate_mask(struct wiphy *wiphy,
1510                                       struct net_device *dev,
1511                                       const u8 *addr,
1512                                       const struct cfg80211_bitrate_mask *mask)
1513 {
1514         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1515         struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
1516         int i;
1517
1518         /*
1519          * This _could_ be supported by providing a hook for
1520          * drivers for this function, but at this point it
1521          * doesn't seem worth bothering.
1522          */
1523         if (local->hw.flags & IEEE80211_HW_HAS_RATE_CONTROL)
1524                 return -EOPNOTSUPP;
1525
1526
1527         for (i = 0; i < IEEE80211_NUM_BANDS; i++)
1528                 sdata->rc_rateidx_mask[i] = mask->control[i].legacy;
1529
1530         return 0;
1531 }
1532
1533 static int ieee80211_remain_on_channel(struct wiphy *wiphy,
1534                                        struct net_device *dev,
1535                                        struct ieee80211_channel *chan,
1536                                        enum nl80211_channel_type channel_type,
1537                                        unsigned int duration,
1538                                        u64 *cookie)
1539 {
1540         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1541
1542         return ieee80211_wk_remain_on_channel(sdata, chan, channel_type,
1543                                               duration, cookie);
1544 }
1545
1546 static int ieee80211_cancel_remain_on_channel(struct wiphy *wiphy,
1547                                               struct net_device *dev,
1548                                               u64 cookie)
1549 {
1550         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1551
1552         return ieee80211_wk_cancel_remain_on_channel(sdata, cookie);
1553 }
1554
1555 static int ieee80211_mgmt_tx(struct wiphy *wiphy, struct net_device *dev,
1556                              struct ieee80211_channel *chan,
1557                              enum nl80211_channel_type channel_type,
1558                              bool channel_type_valid,
1559                              const u8 *buf, size_t len, u64 *cookie)
1560 {
1561         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1562         struct ieee80211_local *local = sdata->local;
1563         struct sk_buff *skb;
1564         struct sta_info *sta;
1565         const struct ieee80211_mgmt *mgmt = (void *)buf;
1566         u32 flags = IEEE80211_TX_INTFL_NL80211_FRAME_TX |
1567                     IEEE80211_TX_CTL_REQ_TX_STATUS;
1568
1569         /* Check that we are on the requested channel for transmission */
1570         if (chan != local->tmp_channel &&
1571             chan != local->oper_channel)
1572                 return -EBUSY;
1573         if (channel_type_valid &&
1574             (channel_type != local->tmp_channel_type &&
1575              channel_type != local->_oper_channel_type))
1576                 return -EBUSY;
1577
1578         switch (sdata->vif.type) {
1579         case NL80211_IFTYPE_ADHOC:
1580         case NL80211_IFTYPE_AP:
1581         case NL80211_IFTYPE_AP_VLAN:
1582         case NL80211_IFTYPE_P2P_GO:
1583                 if (!ieee80211_is_action(mgmt->frame_control) ||
1584                     mgmt->u.action.category == WLAN_CATEGORY_PUBLIC)
1585                         break;
1586                 rcu_read_lock();
1587                 sta = sta_info_get(sdata, mgmt->da);
1588                 rcu_read_unlock();
1589                 if (!sta)
1590                         return -ENOLINK;
1591                 break;
1592         case NL80211_IFTYPE_STATION:
1593         case NL80211_IFTYPE_P2P_CLIENT:
1594                 break;
1595         default:
1596                 return -EOPNOTSUPP;
1597         }
1598
1599         skb = dev_alloc_skb(local->hw.extra_tx_headroom + len);
1600         if (!skb)
1601                 return -ENOMEM;
1602         skb_reserve(skb, local->hw.extra_tx_headroom);
1603
1604         memcpy(skb_put(skb, len), buf, len);
1605
1606         IEEE80211_SKB_CB(skb)->flags = flags;
1607
1608         skb->dev = sdata->dev;
1609         ieee80211_tx_skb(sdata, skb);
1610
1611         *cookie = (unsigned long) skb;
1612         return 0;
1613 }
1614
1615 static void ieee80211_mgmt_frame_register(struct wiphy *wiphy,
1616                                           struct net_device *dev,
1617                                           u16 frame_type, bool reg)
1618 {
1619         struct ieee80211_local *local = wiphy_priv(wiphy);
1620
1621         if (frame_type != (IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_PROBE_REQ))
1622                 return;
1623
1624         if (reg)
1625                 local->probe_req_reg++;
1626         else
1627                 local->probe_req_reg--;
1628
1629         ieee80211_queue_work(&local->hw, &local->reconfig_filter);
1630 }
1631
1632 static int ieee80211_set_antenna(struct wiphy *wiphy, u32 tx_ant, u32 rx_ant)
1633 {
1634         struct ieee80211_local *local = wiphy_priv(wiphy);
1635
1636         if (local->started)
1637                 return -EOPNOTSUPP;
1638
1639         return drv_set_antenna(local, tx_ant, rx_ant);
1640 }
1641
1642 static int ieee80211_get_antenna(struct wiphy *wiphy, u32 *tx_ant, u32 *rx_ant)
1643 {
1644         struct ieee80211_local *local = wiphy_priv(wiphy);
1645
1646         return drv_get_antenna(local, tx_ant, rx_ant);
1647 }
1648
1649 struct cfg80211_ops mac80211_config_ops = {
1650         .add_virtual_intf = ieee80211_add_iface,
1651         .del_virtual_intf = ieee80211_del_iface,
1652         .change_virtual_intf = ieee80211_change_iface,
1653         .add_key = ieee80211_add_key,
1654         .del_key = ieee80211_del_key,
1655         .get_key = ieee80211_get_key,
1656         .set_default_key = ieee80211_config_default_key,
1657         .set_default_mgmt_key = ieee80211_config_default_mgmt_key,
1658         .add_beacon = ieee80211_add_beacon,
1659         .set_beacon = ieee80211_set_beacon,
1660         .del_beacon = ieee80211_del_beacon,
1661         .add_station = ieee80211_add_station,
1662         .del_station = ieee80211_del_station,
1663         .change_station = ieee80211_change_station,
1664         .get_station = ieee80211_get_station,
1665         .dump_station = ieee80211_dump_station,
1666         .dump_survey = ieee80211_dump_survey,
1667 #ifdef CONFIG_MAC80211_MESH
1668         .add_mpath = ieee80211_add_mpath,
1669         .del_mpath = ieee80211_del_mpath,
1670         .change_mpath = ieee80211_change_mpath,
1671         .get_mpath = ieee80211_get_mpath,
1672         .dump_mpath = ieee80211_dump_mpath,
1673         .set_mesh_params = ieee80211_set_mesh_params,
1674         .get_mesh_params = ieee80211_get_mesh_params,
1675 #endif
1676         .change_bss = ieee80211_change_bss,
1677         .set_txq_params = ieee80211_set_txq_params,
1678         .set_channel = ieee80211_set_channel,
1679         .suspend = ieee80211_suspend,
1680         .resume = ieee80211_resume,
1681         .scan = ieee80211_scan,
1682         .auth = ieee80211_auth,
1683         .assoc = ieee80211_assoc,
1684         .deauth = ieee80211_deauth,
1685         .disassoc = ieee80211_disassoc,
1686         .join_ibss = ieee80211_join_ibss,
1687         .leave_ibss = ieee80211_leave_ibss,
1688         .set_wiphy_params = ieee80211_set_wiphy_params,
1689         .set_tx_power = ieee80211_set_tx_power,
1690         .get_tx_power = ieee80211_get_tx_power,
1691         .set_wds_peer = ieee80211_set_wds_peer,
1692         .rfkill_poll = ieee80211_rfkill_poll,
1693         CFG80211_TESTMODE_CMD(ieee80211_testmode_cmd)
1694         .set_power_mgmt = ieee80211_set_power_mgmt,
1695         .set_bitrate_mask = ieee80211_set_bitrate_mask,
1696         .remain_on_channel = ieee80211_remain_on_channel,
1697         .cancel_remain_on_channel = ieee80211_cancel_remain_on_channel,
1698         .mgmt_tx = ieee80211_mgmt_tx,
1699         .set_cqm_rssi_config = ieee80211_set_cqm_rssi_config,
1700         .mgmt_frame_register = ieee80211_mgmt_frame_register,
1701         .set_antenna = ieee80211_set_antenna,
1702         .get_antenna = ieee80211_get_antenna,
1703 };