net/mac80211/cfg.c

   1 /*
   2  * mac80211 configuration hooks for cfg80211
   3  *
   4  * Copyright 2006, 2007 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 <net/net_namespace.h>
  13 #include <linux/rcupdate.h>
  14 #include <net/cfg80211.h>
  15 #include "ieee80211_i.h"
  16 #include "driver-ops.h"
  17 #include "cfg.h"
  18 #include "rate.h"
  19 #include "mesh.h"
  20
  21 static bool nl80211_type_check(enum nl80211_iftype type)
  22 {
  23         switch (type) {
  24         case NL80211_IFTYPE_ADHOC:
  25         case NL80211_IFTYPE_STATION:
  26         case NL80211_IFTYPE_MONITOR:
  27 #ifdef CONFIG_MAC80211_MESH
  28         case NL80211_IFTYPE_MESH_POINT:
  29 #endif
  30         case NL80211_IFTYPE_AP:
  31         case NL80211_IFTYPE_AP_VLAN:
  32         case NL80211_IFTYPE_WDS:
  33                 return true;
  34         default:
  35                 return false;
  36         }
  37 }
  38
  39 static bool nl80211_params_check(enum nl80211_iftype type,
  40                                  struct vif_params *params)
  41 {
  42         if (!nl80211_type_check(type))
  43                 return false;
  44
  45         return true;
  46 }
  47
  48 static int ieee80211_add_iface(struct wiphy *wiphy, char *name,
  49                                enum nl80211_iftype type, u32 *flags,
  50                                struct vif_params *params)
  51 {
  52         struct ieee80211_local *local = wiphy_priv(wiphy);
  53         struct net_device *dev;
  54         struct ieee80211_sub_if_data *sdata;
  55         int err;
  56
  57         if (!nl80211_params_check(type, params))
  58                 return -EINVAL;
  59
  60         err = ieee80211_if_add(local, name, &dev, type, params);
  61         if (err || type != NL80211_IFTYPE_MONITOR || !flags)
  62                 return err;
  63
  64         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
  65         sdata->u.mntr_flags = *flags;
  66         return 0;
  67 }
  68
  69 static int ieee80211_del_iface(struct wiphy *wiphy, struct net_device *dev)
  70 {
  71         ieee80211_if_remove(IEEE80211_DEV_TO_SUB_IF(dev));
  72
  73         return 0;
  74 }
  75
  76 static int ieee80211_change_iface(struct wiphy *wiphy,
  77                                   struct net_device *dev,
  78                                   enum nl80211_iftype type, u32 *flags,
  79                                   struct vif_params *params)
  80 {
  81         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
  82         int ret;
  83
  84         if (ieee80211_sdata_running(sdata))
  85                 return -EBUSY;
  86
  87         if (!nl80211_params_check(type, params))
  88                 return -EINVAL;
  89
  90         ret = ieee80211_if_change_type(sdata, type);
  91         if (ret)
  92                 return ret;
  93
  94         if (ieee80211_vif_is_mesh(&sdata->vif) && params->mesh_id_len)
  95                 ieee80211_sdata_set_mesh_id(sdata,
  96                                             params->mesh_id_len,
  97                                             params->mesh_id);
  98
  99         if (sdata->vif.type != NL80211_IFTYPE_MONITOR || !flags)
 100                 return 0;
 101
 102         if (type == NL80211_IFTYPE_AP_VLAN &&
 103             params && params->use_4addr == 0)
 104                 rcu_assign_pointer(sdata->u.vlan.sta, NULL);
 105         else if (type == NL80211_IFTYPE_STATION &&
 106                  params && params->use_4addr >= 0)
 107                 sdata->u.mgd.use_4addr = params->use_4addr;
 108
 109         sdata->u.mntr_flags = *flags;
 110         return 0;
 111 }
 112
 113 static int ieee80211_add_key(struct wiphy *wiphy, struct net_device *dev,
 114                              u8 key_idx, const u8 *mac_addr,
 115                              struct key_params *params)
 116 {
 117         struct ieee80211_sub_if_data *sdata;
 118         struct sta_info *sta = NULL;
 119         enum ieee80211_key_alg alg;
 120         struct ieee80211_key *key;
 121         int err;
 122
 123         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 124
 125         switch (params->cipher) {
 126         case WLAN_CIPHER_SUITE_WEP40:
 127         case WLAN_CIPHER_SUITE_WEP104:
 128                 alg = ALG_WEP;
 129                 break;
 130         case WLAN_CIPHER_SUITE_TKIP:
 131                 alg = ALG_TKIP;
 132                 break;
 133         case WLAN_CIPHER_SUITE_CCMP:
 134                 alg = ALG_CCMP;
 135                 break;
 136         case WLAN_CIPHER_SUITE_AES_CMAC:
 137                 alg = ALG_AES_CMAC;
 138                 break;
 139         default:
 140                 return -EINVAL;
 141         }
 142
 143         key = ieee80211_key_alloc(alg, key_idx, params->key_len, params->key,
 144                                   params->seq_len, params->seq);
 145         if (!key)
 146                 return -ENOMEM;
 147
 148         rcu_read_lock();
 149
 150         if (mac_addr) {
 151                 sta = sta_info_get(sdata, mac_addr);
 152                 if (!sta) {
 153                         ieee80211_key_free(key);
 154                         err = -ENOENT;
 155                         goto out_unlock;
 156                 }
 157         }
 158
 159         ieee80211_key_link(key, sdata, sta);
 160
 161         err = 0;
 162  out_unlock:
 163         rcu_read_unlock();
 164
 165         return err;
 166 }
 167
 168 static int ieee80211_del_key(struct wiphy *wiphy, struct net_device *dev,
 169                              u8 key_idx, const u8 *mac_addr)
 170 {
 171         struct ieee80211_sub_if_data *sdata;
 172         struct sta_info *sta;
 173         int ret;
 174
 175         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 176
 177         rcu_read_lock();
 178
 179         if (mac_addr) {
 180                 ret = -ENOENT;
 181
 182                 sta = sta_info_get(sdata, mac_addr);
 183                 if (!sta)
 184                         goto out_unlock;
 185
 186                 if (sta->key) {
 187                         ieee80211_key_free(sta->key);
 188                         WARN_ON(sta->key);
 189                         ret = 0;
 190                 }
 191
 192                 goto out_unlock;
 193         }
 194
 195         if (!sdata->keys[key_idx]) {
 196                 ret = -ENOENT;
 197                 goto out_unlock;
 198         }
 199
 200         ieee80211_key_free(sdata->keys[key_idx]);
 201         WARN_ON(sdata->keys[key_idx]);
 202
 203         ret = 0;
 204  out_unlock:
 205         rcu_read_unlock();
 206
 207         return ret;
 208 }
 209
 210 static int ieee80211_get_key(struct wiphy *wiphy, struct net_device *dev,
 211                              u8 key_idx, const u8 *mac_addr, void *cookie,
 212                              void (*callback)(void *cookie,
 213                                               struct key_params *params))
 214 {
 215         struct ieee80211_sub_if_data *sdata;
 216         struct sta_info *sta = NULL;
 217         u8 seq[6] = {0};
 218         struct key_params params;
 219         struct ieee80211_key *key;
 220         u32 iv32;
 221         u16 iv16;
 222         int err = -ENOENT;
 223
 224         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 225
 226         rcu_read_lock();
 227
 228         if (mac_addr) {
 229                 sta = sta_info_get(sdata, mac_addr);
 230                 if (!sta)
 231                         goto out;
 232
 233                 key = sta->key;
 234         } else
 235                 key = sdata->keys[key_idx];
 236
 237         if (!key)
 238                 goto out;
 239
 240         memset(&params, 0, sizeof(params));
 241
 242         switch (key->conf.alg) {
 243         case ALG_TKIP:
 244                 params.cipher = WLAN_CIPHER_SUITE_TKIP;
 245
 246                 iv32 = key->u.tkip.tx.iv32;
 247                 iv16 = key->u.tkip.tx.iv16;
 248
 249                 if (key->flags & KEY_FLAG_UPLOADED_TO_HARDWARE)
 250                         drv_get_tkip_seq(sdata->local,
 251                                          key->conf.hw_key_idx,
 252                                          &iv32, &iv16);
 253
 254                 seq[0] = iv16 & 0xff;
 255                 seq[1] = (iv16 >> 8) & 0xff;
 256                 seq[2] = iv32 & 0xff;
 257                 seq[3] = (iv32 >> 8) & 0xff;
 258                 seq[4] = (iv32 >> 16) & 0xff;
 259                 seq[5] = (iv32 >> 24) & 0xff;
 260                 params.seq = seq;
 261                 params.seq_len = 6;
 262                 break;
 263         case ALG_CCMP:
 264                 params.cipher = 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 ALG_WEP:
 275                 if (key->conf.keylen == 5)
 276                         params.cipher = WLAN_CIPHER_SUITE_WEP40;
 277                 else
 278                         params.cipher = WLAN_CIPHER_SUITE_WEP104;
 279                 break;
 280         case ALG_AES_CMAC:
 281                 params.cipher = WLAN_CIPHER_SUITE_AES_CMAC;
 282                 seq[0] = key->u.aes_cmac.tx_pn[5];
 283                 seq[1] = key->u.aes_cmac.tx_pn[4];
 284                 seq[2] = key->u.aes_cmac.tx_pn[3];
 285                 seq[3] = key->u.aes_cmac.tx_pn[2];
 286                 seq[4] = key->u.aes_cmac.tx_pn[1];
 287                 seq[5] = key->u.aes_cmac.tx_pn[0];
 288                 params.seq = seq;
 289                 params.seq_len = 6;
 290                 break;
 291         }
 292
 293         params.key = key->conf.key;
 294         params.key_len = key->conf.keylen;
 295
 296         callback(cookie, &params);
 297         err = 0;
 298
 299  out:
 300         rcu_read_unlock();
 301         return err;
 302 }
 303
 304 static int ieee80211_config_default_key(struct wiphy *wiphy,
 305                                         struct net_device *dev,
 306                                         u8 key_idx)
 307 {
 308         struct ieee80211_sub_if_data *sdata;
 309
 310         rcu_read_lock();
 311
 312         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 313         ieee80211_set_default_key(sdata, key_idx);
 314
 315         rcu_read_unlock();
 316
 317         return 0;
 318 }
 319
 320 static int ieee80211_config_default_mgmt_key(struct wiphy *wiphy,
 321                                              struct net_device *dev,
 322                                              u8 key_idx)
 323 {
 324         struct ieee80211_sub_if_data *sdata;
 325
 326         rcu_read_lock();
 327
 328         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 329         ieee80211_set_default_mgmt_key(sdata, key_idx);
 330
 331         rcu_read_unlock();
 332
 333         return 0;
 334 }
 335
 336 static void sta_set_sinfo(struct sta_info *sta, struct station_info *sinfo)
 337 {
 338         struct ieee80211_sub_if_data *sdata = sta->sdata;
 339
 340         sinfo->generation = sdata->local->sta_generation;
 341
 342         sinfo->filled = STATION_INFO_INACTIVE_TIME |
 343                         STATION_INFO_RX_BYTES |
 344                         STATION_INFO_TX_BYTES |
 345                         STATION_INFO_RX_PACKETS |
 346                         STATION_INFO_TX_PACKETS |
 347                         STATION_INFO_TX_BITRATE;
 348
 349         sinfo->inactive_time = jiffies_to_msecs(jiffies - sta->last_rx);
 350         sinfo->rx_bytes = sta->rx_bytes;
 351         sinfo->tx_bytes = sta->tx_bytes;
 352         sinfo->rx_packets = sta->rx_packets;
 353         sinfo->tx_packets = sta->tx_packets;
 354
 355         if ((sta->local->hw.flags & IEEE80211_HW_SIGNAL_DBM) ||
 356             (sta->local->hw.flags & IEEE80211_HW_SIGNAL_UNSPEC)) {
 357                 sinfo->filled |= STATION_INFO_SIGNAL;
 358                 sinfo->signal = (s8)sta->last_signal;
 359         }
 360
 361         sinfo->txrate.flags = 0;
 362         if (sta->last_tx_rate.flags & IEEE80211_TX_RC_MCS)
 363                 sinfo->txrate.flags |= RATE_INFO_FLAGS_MCS;
 364         if (sta->last_tx_rate.flags & IEEE80211_TX_RC_40_MHZ_WIDTH)
 365                 sinfo->txrate.flags |= RATE_INFO_FLAGS_40_MHZ_WIDTH;
 366         if (sta->last_tx_rate.flags & IEEE80211_TX_RC_SHORT_GI)
 367                 sinfo->txrate.flags |= RATE_INFO_FLAGS_SHORT_GI;
 368
 369         if (!(sta->last_tx_rate.flags & IEEE80211_TX_RC_MCS)) {
 370                 struct ieee80211_supported_band *sband;
 371                 sband = sta->local->hw.wiphy->bands[
 372                                 sta->local->hw.conf.channel->band];
 373                 sinfo->txrate.legacy =
 374                         sband->bitrates[sta->last_tx_rate.idx].bitrate;
 375         } else
 376                 sinfo->txrate.mcs = sta->last_tx_rate.idx;
 377
 378         if (ieee80211_vif_is_mesh(&sdata->vif)) {
 379 #ifdef CONFIG_MAC80211_MESH
 380                 sinfo->filled |= STATION_INFO_LLID |
 381                                  STATION_INFO_PLID |
 382                                  STATION_INFO_PLINK_STATE;
 383
 384                 sinfo->llid = le16_to_cpu(sta->llid);
 385                 sinfo->plid = le16_to_cpu(sta->plid);
 386                 sinfo->plink_state = sta->plink_state;
 387 #endif
 388         }
 389 }
 390
 391
 392 static int ieee80211_dump_station(struct wiphy *wiphy, struct net_device *dev,
 393                                  int idx, u8 *mac, struct station_info *sinfo)
 394 {
 395         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 396         struct sta_info *sta;
 397         int ret = -ENOENT;
 398
 399         rcu_read_lock();
 400
 401         sta = sta_info_get_by_idx(sdata, idx);
 402         if (sta) {
 403                 ret = 0;
 404                 memcpy(mac, sta->sta.addr, ETH_ALEN);
 405                 sta_set_sinfo(sta, sinfo);
 406         }
 407
 408         rcu_read_unlock();
 409
 410         return ret;
 411 }
 412
 413 static int ieee80211_get_station(struct wiphy *wiphy, struct net_device *dev,
 414                                  u8 *mac, struct station_info *sinfo)
 415 {
 416         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 417         struct sta_info *sta;
 418         int ret = -ENOENT;
 419
 420         rcu_read_lock();
 421
 422         sta = sta_info_get(sdata, mac);
 423         if (sta) {
 424                 ret = 0;
 425                 sta_set_sinfo(sta, sinfo);
 426         }
 427
 428         rcu_read_unlock();
 429
 430         return ret;
 431 }
 432
 433 /*
 434  * This handles both adding a beacon and setting new beacon info
 435  */
 436 static int ieee80211_config_beacon(struct ieee80211_sub_if_data *sdata,
 437                                    struct beacon_parameters *params)
 438 {
 439         struct beacon_data *new, *old;
 440         int new_head_len, new_tail_len;
 441         int size;
 442         int err = -EINVAL;
 443
 444         old = sdata->u.ap.beacon;
 445
 446         /* head must not be zero-length */
 447         if (params->head && !params->head_len)
 448                 return -EINVAL;
 449
 450         /*
 451          * This is a kludge. beacon interval should really be part
 452          * of the beacon information.
 453          */
 454         if (params->interval &&
 455             (sdata->vif.bss_conf.beacon_int != params->interval)) {
 456                 sdata->vif.bss_conf.beacon_int = params->interval;
 457                 ieee80211_bss_info_change_notify(sdata,
 458                                                  BSS_CHANGED_BEACON_INT);
 459         }
 460
 461         /* Need to have a beacon head if we don't have one yet */
 462         if (!params->head && !old)
 463                 return err;
 464
 465         /* sorry, no way to start beaconing without dtim period */
 466         if (!params->dtim_period && !old)
 467                 return err;
 468
 469         /* new or old head? */
 470         if (params->head)
 471                 new_head_len = params->head_len;
 472         else
 473                 new_head_len = old->head_len;
 474
 475         /* new or old tail? */
 476         if (params->tail || !old)
 477                 /* params->tail_len will be zero for !params->tail */
 478                 new_tail_len = params->tail_len;
 479         else
 480                 new_tail_len = old->tail_len;
 481
 482         size = sizeof(*new) + new_head_len + new_tail_len;
 483
 484         new = kzalloc(size, GFP_KERNEL);
 485         if (!new)
 486                 return -ENOMEM;
 487
 488         /* start filling the new info now */
 489
 490         /* new or old dtim period? */
 491         if (params->dtim_period)
 492                 new->dtim_period = params->dtim_period;
 493         else
 494                 new->dtim_period = old->dtim_period;
 495
 496         /*
 497          * pointers go into the block we allocated,
 498          * memory is | beacon_data | head | tail |
 499          */
 500         new->head = ((u8 *) new) + sizeof(*new);
 501         new->tail = new->head + new_head_len;
 502         new->head_len = new_head_len;
 503         new->tail_len = new_tail_len;
 504
 505         /* copy in head */
 506         if (params->head)
 507                 memcpy(new->head, params->head, new_head_len);
 508         else
 509                 memcpy(new->head, old->head, new_head_len);
 510
 511         /* copy in optional tail */
 512         if (params->tail)
 513                 memcpy(new->tail, params->tail, new_tail_len);
 514         else
 515                 if (old)
 516                         memcpy(new->tail, old->tail, new_tail_len);
 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 } __attribute__ ((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(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         u32 rates;
 630         int i, j;
 631         struct ieee80211_supported_band *sband;
 632         struct ieee80211_sub_if_data *sdata = sta->sdata;
 633         u32 mask, set;
 634
 635         sband = local->hw.wiphy->bands[local->oper_channel->band];
 636
 637         spin_lock_bh(&sta->lock);
 638         mask = params->sta_flags_mask;
 639         set = params->sta_flags_set;
 640
 641         if (mask & BIT(NL80211_STA_FLAG_AUTHORIZED)) {
 642                 sta->flags &= ~WLAN_STA_AUTHORIZED;
 643                 if (set & BIT(NL80211_STA_FLAG_AUTHORIZED))
 644                         sta->flags |= WLAN_STA_AUTHORIZED;
 645         }
 646
 647         if (mask & BIT(NL80211_STA_FLAG_SHORT_PREAMBLE)) {
 648                 sta->flags &= ~WLAN_STA_SHORT_PREAMBLE;
 649                 if (set & BIT(NL80211_STA_FLAG_SHORT_PREAMBLE))
 650                         sta->flags |= WLAN_STA_SHORT_PREAMBLE;
 651         }
 652
 653         if (mask & BIT(NL80211_STA_FLAG_WME)) {
 654                 sta->flags &= ~WLAN_STA_WME;
 655                 if (set & BIT(NL80211_STA_FLAG_WME))
 656                         sta->flags |= WLAN_STA_WME;
 657         }
 658
 659         if (mask & BIT(NL80211_STA_FLAG_MFP)) {
 660                 sta->flags &= ~WLAN_STA_MFP;
 661                 if (set & BIT(NL80211_STA_FLAG_MFP))
 662                         sta->flags |= WLAN_STA_MFP;
 663         }
 664         spin_unlock_bh(&sta->lock);
 665
 666         /*
 667          * cfg80211 validates this (1-2007) and allows setting the AID
 668          * only when creating a new station entry
 669          */
 670         if (params->aid)
 671                 sta->sta.aid = params->aid;
 672
 673         /*
 674          * FIXME: updating the following information is racy when this
 675          *        function is called from ieee80211_change_station().
 676          *        However, all this information should be static so
 677          *        maybe we should just reject attemps to change it.
 678          */
 679
 680         if (params->listen_interval >= 0)
 681                 sta->listen_interval = params->listen_interval;
 682
 683         if (params->supported_rates) {
 684                 rates = 0;
 685
 686                 for (i = 0; i < params->supported_rates_len; i++) {
 687                         int rate = (params->supported_rates[i] & 0x7f) * 5;
 688                         for (j = 0; j < sband->n_bitrates; j++) {
 689                                 if (sband->bitrates[j].bitrate == rate)
 690                                         rates |= BIT(j);
 691                         }
 692                 }
 693                 sta->sta.supp_rates[local->oper_channel->band] = rates;
 694         }
 695
 696         if (params->ht_capa)
 697                 ieee80211_ht_cap_ie_to_sta_ht_cap(sband,
 698                                                   params->ht_capa,
 699                                                   &sta->sta.ht_cap);
 700
 701         if (ieee80211_vif_is_mesh(&sdata->vif) && params->plink_action) {
 702                 switch (params->plink_action) {
 703                 case PLINK_ACTION_OPEN:
 704                         mesh_plink_open(sta);
 705                         break;
 706                 case PLINK_ACTION_BLOCK:
 707                         mesh_plink_block(sta);
 708                         break;
 709                 }
 710         }
 711 }
 712
 713 static int ieee80211_add_station(struct wiphy *wiphy, struct net_device *dev,
 714                                  u8 *mac, struct station_parameters *params)
 715 {
 716         struct ieee80211_local *local = wiphy_priv(wiphy);
 717         struct sta_info *sta;
 718         struct ieee80211_sub_if_data *sdata;
 719         int err;
 720         int layer2_update;
 721
 722         if (params->vlan) {
 723                 sdata = IEEE80211_DEV_TO_SUB_IF(params->vlan);
 724
 725                 if (sdata->vif.type != NL80211_IFTYPE_AP_VLAN &&
 726                     sdata->vif.type != NL80211_IFTYPE_AP)
 727                         return -EINVAL;
 728         } else
 729                 sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 730
 731         if (compare_ether_addr(mac, sdata->vif.addr) == 0)
 732                 return -EINVAL;
 733
 734         if (is_multicast_ether_addr(mac))
 735                 return -EINVAL;
 736
 737         sta = sta_info_alloc(sdata, mac, GFP_KERNEL);
 738         if (!sta)
 739                 return -ENOMEM;
 740
 741         sta->flags = WLAN_STA_AUTH | WLAN_STA_ASSOC;
 742
 743         sta_apply_parameters(local, sta, params);
 744
 745         rate_control_rate_init(sta);
 746
 747         layer2_update = sdata->vif.type == NL80211_IFTYPE_AP_VLAN ||
 748                 sdata->vif.type == NL80211_IFTYPE_AP;
 749
 750         rcu_read_lock();
 751
 752         err = sta_info_insert(sta);
 753         if (err) {
 754                 rcu_read_unlock();
 755                 return err;
 756         }
 757
 758         if (layer2_update)
 759                 ieee80211_send_layer2_update(sta);
 760
 761         rcu_read_unlock();
 762
 763         return 0;
 764 }
 765
 766 static int ieee80211_del_station(struct wiphy *wiphy, struct net_device *dev,
 767                                  u8 *mac)
 768 {
 769         struct ieee80211_local *local = wiphy_priv(wiphy);
 770         struct ieee80211_sub_if_data *sdata;
 771         struct sta_info *sta;
 772
 773         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 774
 775         if (mac) {
 776                 rcu_read_lock();
 777
 778                 sta = sta_info_get(sdata, mac);
 779                 if (!sta) {
 780                         rcu_read_unlock();
 781                         return -ENOENT;
 782                 }
 783
 784                 sta_info_unlink(&sta);
 785                 rcu_read_unlock();
 786
 787                 sta_info_destroy(sta);
 788         } else
 789                 sta_info_flush(local, sdata);
 790
 791         return 0;
 792 }
 793
 794 static int ieee80211_change_station(struct wiphy *wiphy,
 795                                     struct net_device *dev,
 796                                     u8 *mac,
 797                                     struct station_parameters *params)
 798 {
 799         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 800         struct ieee80211_local *local = wiphy_priv(wiphy);
 801         struct sta_info *sta;
 802         struct ieee80211_sub_if_data *vlansdata;
 803
 804         rcu_read_lock();
 805
 806         sta = sta_info_get(sdata, mac);
 807         if (!sta) {
 808                 rcu_read_unlock();
 809                 return -ENOENT;
 810         }
 811
 812         if (params->vlan && params->vlan != sta->sdata->dev) {
 813                 vlansdata = IEEE80211_DEV_TO_SUB_IF(params->vlan);
 814
 815                 if (vlansdata->vif.type != NL80211_IFTYPE_AP_VLAN &&
 816                     vlansdata->vif.type != NL80211_IFTYPE_AP) {
 817                         rcu_read_unlock();
 818                         return -EINVAL;
 819                 }
 820
 821                 if (params->vlan->ieee80211_ptr->use_4addr) {
 822                         if (vlansdata->u.vlan.sta) {
 823                                 rcu_read_unlock();
 824                                 return -EBUSY;
 825                         }
 826
 827                         rcu_assign_pointer(vlansdata->u.vlan.sta, sta);
 828                 }
 829
 830                 sta->sdata = vlansdata;
 831                 ieee80211_send_layer2_update(sta);
 832         }
 833
 834         sta_apply_parameters(local, sta, params);
 835
 836         rcu_read_unlock();
 837
 838         return 0;
 839 }
 840
 841 #ifdef CONFIG_MAC80211_MESH
 842 static int ieee80211_add_mpath(struct wiphy *wiphy, struct net_device *dev,
 843                                  u8 *dst, u8 *next_hop)
 844 {
 845         struct ieee80211_sub_if_data *sdata;
 846         struct mesh_path *mpath;
 847         struct sta_info *sta;
 848         int err;
 849
 850         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 851
 852         rcu_read_lock();
 853         sta = sta_info_get(sdata, next_hop);
 854         if (!sta) {
 855                 rcu_read_unlock();
 856                 return -ENOENT;
 857         }
 858
 859         err = mesh_path_add(dst, sdata);
 860         if (err) {
 861                 rcu_read_unlock();
 862                 return err;
 863         }
 864
 865         mpath = mesh_path_lookup(dst, sdata);
 866         if (!mpath) {
 867                 rcu_read_unlock();
 868                 return -ENXIO;
 869         }
 870         mesh_path_fix_nexthop(mpath, sta);
 871
 872         rcu_read_unlock();
 873         return 0;
 874 }
 875
 876 static int ieee80211_del_mpath(struct wiphy *wiphy, struct net_device *dev,
 877                                  u8 *dst)
 878 {
 879         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 880
 881         if (dst)
 882                 return mesh_path_del(dst, sdata);
 883
 884         mesh_path_flush(sdata);
 885         return 0;
 886 }
 887
 888 static int ieee80211_change_mpath(struct wiphy *wiphy,
 889                                     struct net_device *dev,
 890                                     u8 *dst, u8 *next_hop)
 891 {
 892         struct ieee80211_sub_if_data *sdata;
 893         struct mesh_path *mpath;
 894         struct sta_info *sta;
 895
 896         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 897
 898         rcu_read_lock();
 899
 900         sta = sta_info_get(sdata, next_hop);
 901         if (!sta) {
 902                 rcu_read_unlock();
 903                 return -ENOENT;
 904         }
 905
 906         mpath = mesh_path_lookup(dst, sdata);
 907         if (!mpath) {
 908                 rcu_read_unlock();
 909                 return -ENOENT;
 910         }
 911
 912         mesh_path_fix_nexthop(mpath, sta);
 913
 914         rcu_read_unlock();
 915         return 0;
 916 }
 917
 918 static void mpath_set_pinfo(struct mesh_path *mpath, u8 *next_hop,
 919                             struct mpath_info *pinfo)
 920 {
 921         if (mpath->next_hop)
 922                 memcpy(next_hop, mpath->next_hop->sta.addr, ETH_ALEN);
 923         else
 924                 memset(next_hop, 0, ETH_ALEN);
 925
 926         pinfo->generation = mesh_paths_generation;
 927
 928         pinfo->filled = MPATH_INFO_FRAME_QLEN |
 929                         MPATH_INFO_SN |
 930                         MPATH_INFO_METRIC |
 931                         MPATH_INFO_EXPTIME |
 932                         MPATH_INFO_DISCOVERY_TIMEOUT |
 933                         MPATH_INFO_DISCOVERY_RETRIES |
 934                         MPATH_INFO_FLAGS;
 935
 936         pinfo->frame_qlen = mpath->frame_queue.qlen;
 937         pinfo->sn = mpath->sn;
 938         pinfo->metric = mpath->metric;
 939         if (time_before(jiffies, mpath->exp_time))
 940                 pinfo->exptime = jiffies_to_msecs(mpath->exp_time - jiffies);
 941         pinfo->discovery_timeout =
 942                         jiffies_to_msecs(mpath->discovery_timeout);
 943         pinfo->discovery_retries = mpath->discovery_retries;
 944         pinfo->flags = 0;
 945         if (mpath->flags & MESH_PATH_ACTIVE)
 946                 pinfo->flags |= NL80211_MPATH_FLAG_ACTIVE;
 947         if (mpath->flags & MESH_PATH_RESOLVING)
 948                 pinfo->flags |= NL80211_MPATH_FLAG_RESOLVING;
 949         if (mpath->flags & MESH_PATH_SN_VALID)
 950                 pinfo->flags |= NL80211_MPATH_FLAG_SN_VALID;
 951         if (mpath->flags & MESH_PATH_FIXED)
 952                 pinfo->flags |= NL80211_MPATH_FLAG_FIXED;
 953         if (mpath->flags & MESH_PATH_RESOLVING)
 954                 pinfo->flags |= NL80211_MPATH_FLAG_RESOLVING;
 955
 956         pinfo->flags = mpath->flags;
 957 }
 958
 959 static int ieee80211_get_mpath(struct wiphy *wiphy, struct net_device *dev,
 960                                u8 *dst, u8 *next_hop, struct mpath_info *pinfo)
 961
 962 {
 963         struct ieee80211_sub_if_data *sdata;
 964         struct mesh_path *mpath;
 965
 966         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 967
 968         rcu_read_lock();
 969         mpath = mesh_path_lookup(dst, sdata);
 970         if (!mpath) {
 971                 rcu_read_unlock();
 972                 return -ENOENT;
 973         }
 974         memcpy(dst, mpath->dst, ETH_ALEN);
 975         mpath_set_pinfo(mpath, next_hop, pinfo);
 976         rcu_read_unlock();
 977         return 0;
 978 }
 979
 980 static int ieee80211_dump_mpath(struct wiphy *wiphy, struct net_device *dev,
 981                                  int idx, u8 *dst, u8 *next_hop,
 982                                  struct mpath_info *pinfo)
 983 {
 984         struct ieee80211_sub_if_data *sdata;
 985         struct mesh_path *mpath;
 986
 987         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 988
 989         rcu_read_lock();
 990         mpath = mesh_path_lookup_by_idx(idx, sdata);
 991         if (!mpath) {
 992                 rcu_read_unlock();
 993                 return -ENOENT;
 994         }
 995         memcpy(dst, mpath->dst, ETH_ALEN);
 996         mpath_set_pinfo(mpath, next_hop, pinfo);
 997         rcu_read_unlock();
 998         return 0;
 999 }
1000
1001 static int ieee80211_get_mesh_params(struct wiphy *wiphy,
1002                                 struct net_device *dev,
1003                                 struct mesh_config *conf)
1004 {
1005         struct ieee80211_sub_if_data *sdata;
1006         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1007
1008         memcpy(conf, &(sdata->u.mesh.mshcfg), sizeof(struct mesh_config));
1009         return 0;
1010 }
1011
1012 static inline bool _chg_mesh_attr(enum nl80211_meshconf_params parm, u32 mask)
1013 {
1014         return (mask >> (parm-1)) & 0x1;
1015 }
1016
1017 static int ieee80211_set_mesh_params(struct wiphy *wiphy,
1018                                 struct net_device *dev,
1019                                 const struct mesh_config *nconf, u32 mask)
1020 {
1021         struct mesh_config *conf;
1022         struct ieee80211_sub_if_data *sdata;
1023         struct ieee80211_if_mesh *ifmsh;
1024
1025         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1026         ifmsh = &sdata->u.mesh;
1027
1028         /* Set the config options which we are interested in setting */
1029         conf = &(sdata->u.mesh.mshcfg);
1030         if (_chg_mesh_attr(NL80211_MESHCONF_RETRY_TIMEOUT, mask))
1031                 conf->dot11MeshRetryTimeout = nconf->dot11MeshRetryTimeout;
1032         if (_chg_mesh_attr(NL80211_MESHCONF_CONFIRM_TIMEOUT, mask))
1033                 conf->dot11MeshConfirmTimeout = nconf->dot11MeshConfirmTimeout;
1034         if (_chg_mesh_attr(NL80211_MESHCONF_HOLDING_TIMEOUT, mask))
1035                 conf->dot11MeshHoldingTimeout = nconf->dot11MeshHoldingTimeout;
1036         if (_chg_mesh_attr(NL80211_MESHCONF_MAX_PEER_LINKS, mask))
1037                 conf->dot11MeshMaxPeerLinks = nconf->dot11MeshMaxPeerLinks;
1038         if (_chg_mesh_attr(NL80211_MESHCONF_MAX_RETRIES, mask))
1039                 conf->dot11MeshMaxRetries = nconf->dot11MeshMaxRetries;
1040         if (_chg_mesh_attr(NL80211_MESHCONF_TTL, mask))
1041                 conf->dot11MeshTTL = nconf->dot11MeshTTL;
1042         if (_chg_mesh_attr(NL80211_MESHCONF_AUTO_OPEN_PLINKS, mask))
1043                 conf->auto_open_plinks = nconf->auto_open_plinks;
1044         if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES, mask))
1045                 conf->dot11MeshHWMPmaxPREQretries =
1046                         nconf->dot11MeshHWMPmaxPREQretries;
1047         if (_chg_mesh_attr(NL80211_MESHCONF_PATH_REFRESH_TIME, mask))
1048                 conf->path_refresh_time = nconf->path_refresh_time;
1049         if (_chg_mesh_attr(NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT, mask))
1050                 conf->min_discovery_timeout = nconf->min_discovery_timeout;
1051         if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT, mask))
1052                 conf->dot11MeshHWMPactivePathTimeout =
1053                         nconf->dot11MeshHWMPactivePathTimeout;
1054         if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL, mask))
1055                 conf->dot11MeshHWMPpreqMinInterval =
1056                         nconf->dot11MeshHWMPpreqMinInterval;
1057         if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME,
1058                            mask))
1059                 conf->dot11MeshHWMPnetDiameterTraversalTime =
1060                         nconf->dot11MeshHWMPnetDiameterTraversalTime;
1061         if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_ROOTMODE, mask)) {
1062                 conf->dot11MeshHWMPRootMode = nconf->dot11MeshHWMPRootMode;
1063                 ieee80211_mesh_root_setup(ifmsh);
1064         }
1065         return 0;
1066 }
1067
1068 #endif
1069
1070 static int ieee80211_change_bss(struct wiphy *wiphy,
1071                                 struct net_device *dev,
1072                                 struct bss_parameters *params)
1073 {
1074         struct ieee80211_sub_if_data *sdata;
1075         u32 changed = 0;
1076
1077         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1078
1079         if (params->use_cts_prot >= 0) {
1080                 sdata->vif.bss_conf.use_cts_prot = params->use_cts_prot;
1081                 changed |= BSS_CHANGED_ERP_CTS_PROT;
1082         }
1083         if (params->use_short_preamble >= 0) {
1084                 sdata->vif.bss_conf.use_short_preamble =
1085                         params->use_short_preamble;
1086                 changed |= BSS_CHANGED_ERP_PREAMBLE;
1087         }
1088         if (params->use_short_slot_time >= 0) {
1089                 sdata->vif.bss_conf.use_short_slot =
1090                         params->use_short_slot_time;
1091                 changed |= BSS_CHANGED_ERP_SLOT;
1092         }
1093
1094         if (params->basic_rates) {
1095                 int i, j;
1096                 u32 rates = 0;
1097                 struct ieee80211_local *local = wiphy_priv(wiphy);
1098                 struct ieee80211_supported_band *sband =
1099                         wiphy->bands[local->oper_channel->band];
1100
1101                 for (i = 0; i < params->basic_rates_len; i++) {
1102                         int rate = (params->basic_rates[i] & 0x7f) * 5;
1103                         for (j = 0; j < sband->n_bitrates; j++) {
1104                                 if (sband->bitrates[j].bitrate == rate)
1105                                         rates |= BIT(j);
1106                         }
1107                 }
1108                 sdata->vif.bss_conf.basic_rates = rates;
1109                 changed |= BSS_CHANGED_BASIC_RATES;
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         if (drv_conf_tx(local, params->queue, &p)) {
1132                 printk(KERN_DEBUG "%s: failed to set TX queue "
1133                        "parameters for queue %d\n",
1134                        wiphy_name(local->hw.wiphy), params->queue);
1135                 return -EINVAL;
1136         }
1137
1138         return 0;
1139 }
1140
1141 static int ieee80211_set_channel(struct wiphy *wiphy,
1142                                  struct ieee80211_channel *chan,
1143                                  enum nl80211_channel_type channel_type)
1144 {
1145         struct ieee80211_local *local = wiphy_priv(wiphy);
1146
1147         local->oper_channel = chan;
1148         local->oper_channel_type = channel_type;
1149
1150         return ieee80211_hw_config(local, IEEE80211_CONF_CHANGE_CHANNEL);
1151 }
1152
1153 #ifdef CONFIG_PM
1154 static int ieee80211_suspend(struct wiphy *wiphy)
1155 {
1156         return __ieee80211_suspend(wiphy_priv(wiphy));
1157 }
1158
1159 static int ieee80211_resume(struct wiphy *wiphy)
1160 {
1161         return __ieee80211_resume(wiphy_priv(wiphy));
1162 }
1163 #else
1164 #define ieee80211_suspend NULL
1165 #define ieee80211_resume NULL
1166 #endif
1167
1168 static int ieee80211_scan(struct wiphy *wiphy,
1169                           struct net_device *dev,
1170                           struct cfg80211_scan_request *req)
1171 {
1172         struct ieee80211_sub_if_data *sdata;
1173
1174         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1175
1176         if (sdata->vif.type != NL80211_IFTYPE_STATION &&
1177             sdata->vif.type != NL80211_IFTYPE_ADHOC &&
1178             sdata->vif.type != NL80211_IFTYPE_MESH_POINT &&
1179             (sdata->vif.type != NL80211_IFTYPE_AP || sdata->u.ap.beacon))
1180                 return -EOPNOTSUPP;
1181
1182         return ieee80211_request_scan(sdata, req);
1183 }
1184
1185 static int ieee80211_auth(struct wiphy *wiphy, struct net_device *dev,
1186                           struct cfg80211_auth_request *req)
1187 {
1188         return ieee80211_mgd_auth(IEEE80211_DEV_TO_SUB_IF(dev), req);
1189 }
1190
1191 static int ieee80211_assoc(struct wiphy *wiphy, struct net_device *dev,
1192                            struct cfg80211_assoc_request *req)
1193 {
1194         return ieee80211_mgd_assoc(IEEE80211_DEV_TO_SUB_IF(dev), req);
1195 }
1196
1197 static int ieee80211_deauth(struct wiphy *wiphy, struct net_device *dev,
1198                             struct cfg80211_deauth_request *req,
1199                             void *cookie)
1200 {
1201         return ieee80211_mgd_deauth(IEEE80211_DEV_TO_SUB_IF(dev),
1202                                     req, cookie);
1203 }
1204
1205 static int ieee80211_disassoc(struct wiphy *wiphy, struct net_device *dev,
1206                               struct cfg80211_disassoc_request *req,
1207                               void *cookie)
1208 {
1209         return ieee80211_mgd_disassoc(IEEE80211_DEV_TO_SUB_IF(dev),
1210                                       req, cookie);
1211 }
1212
1213 static int ieee80211_join_ibss(struct wiphy *wiphy, struct net_device *dev,
1214                                struct cfg80211_ibss_params *params)
1215 {
1216         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1217
1218         return ieee80211_ibss_join(sdata, params);
1219 }
1220
1221 static int ieee80211_leave_ibss(struct wiphy *wiphy, struct net_device *dev)
1222 {
1223         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1224
1225         return ieee80211_ibss_leave(sdata);
1226 }
1227
1228 static int ieee80211_set_wiphy_params(struct wiphy *wiphy, u32 changed)
1229 {
1230         struct ieee80211_local *local = wiphy_priv(wiphy);
1231         int err;
1232
1233         if (changed & WIPHY_PARAM_RTS_THRESHOLD) {
1234                 err = drv_set_rts_threshold(local, wiphy->rts_threshold);
1235
1236                 if (err)
1237                         return err;
1238         }
1239
1240         if (changed & WIPHY_PARAM_RETRY_SHORT)
1241                 local->hw.conf.short_frame_max_tx_count = wiphy->retry_short;
1242         if (changed & WIPHY_PARAM_RETRY_LONG)
1243                 local->hw.conf.long_frame_max_tx_count = wiphy->retry_long;
1244         if (changed &
1245             (WIPHY_PARAM_RETRY_SHORT | WIPHY_PARAM_RETRY_LONG))
1246                 ieee80211_hw_config(local, IEEE80211_CONF_CHANGE_RETRY_LIMITS);
1247
1248         return 0;
1249 }
1250
1251 static int ieee80211_set_tx_power(struct wiphy *wiphy,
1252                                   enum tx_power_setting type, int dbm)
1253 {
1254         struct ieee80211_local *local = wiphy_priv(wiphy);
1255         struct ieee80211_channel *chan = local->hw.conf.channel;
1256         u32 changes = 0;
1257
1258         switch (type) {
1259         case TX_POWER_AUTOMATIC:
1260                 local->user_power_level = -1;
1261                 break;
1262         case TX_POWER_LIMITED:
1263                 if (dbm < 0)
1264                         return -EINVAL;
1265                 local->user_power_level = dbm;
1266                 break;
1267         case TX_POWER_FIXED:
1268                 if (dbm < 0)
1269                         return -EINVAL;
1270                 /* TODO: move to cfg80211 when it knows the channel */
1271                 if (dbm > chan->max_power)
1272                         return -EINVAL;
1273                 local->user_power_level = dbm;
1274                 break;
1275         }
1276
1277         ieee80211_hw_config(local, changes);
1278
1279         return 0;
1280 }
1281
1282 static int ieee80211_get_tx_power(struct wiphy *wiphy, int *dbm)
1283 {
1284         struct ieee80211_local *local = wiphy_priv(wiphy);
1285
1286         *dbm = local->hw.conf.power_level;
1287
1288         return 0;
1289 }
1290
1291 static int ieee80211_set_wds_peer(struct wiphy *wiphy, struct net_device *dev,
1292                                   u8 *addr)
1293 {
1294         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1295
1296         memcpy(&sdata->u.wds.remote_addr, addr, ETH_ALEN);
1297
1298         return 0;
1299 }
1300
1301 static void ieee80211_rfkill_poll(struct wiphy *wiphy)
1302 {
1303         struct ieee80211_local *local = wiphy_priv(wiphy);
1304
1305         drv_rfkill_poll(local);
1306 }
1307
1308 #ifdef CONFIG_NL80211_TESTMODE
1309 static int ieee80211_testmode_cmd(struct wiphy *wiphy, void *data, int len)
1310 {
1311         struct ieee80211_local *local = wiphy_priv(wiphy);
1312
1313         if (!local->ops->testmode_cmd)
1314                 return -EOPNOTSUPP;
1315
1316         return local->ops->testmode_cmd(&local->hw, data, len);
1317 }
1318 #endif
1319
1320 int __ieee80211_request_smps(struct ieee80211_sub_if_data *sdata,
1321                              enum ieee80211_smps_mode smps_mode)
1322 {
1323         const u8 *ap;
1324         enum ieee80211_smps_mode old_req;
1325         int err;
1326
1327         old_req = sdata->u.mgd.req_smps;
1328         sdata->u.mgd.req_smps = smps_mode;
1329
1330         if (old_req == smps_mode &&
1331             smps_mode != IEEE80211_SMPS_AUTOMATIC)
1332                 return 0;
1333
1334         /*
1335          * If not associated, or current association is not an HT
1336          * association, there's no need to send an action frame.
1337          */
1338         if (!sdata->u.mgd.associated ||
1339             sdata->local->oper_channel_type == NL80211_CHAN_NO_HT) {
1340                 mutex_lock(&sdata->local->iflist_mtx);
1341                 ieee80211_recalc_smps(sdata->local, sdata);
1342                 mutex_unlock(&sdata->local->iflist_mtx);
1343                 return 0;
1344         }
1345
1346         ap = sdata->u.mgd.associated->cbss.bssid;
1347
1348         if (smps_mode == IEEE80211_SMPS_AUTOMATIC) {
1349                 if (sdata->u.mgd.powersave)
1350                         smps_mode = IEEE80211_SMPS_DYNAMIC;
1351                 else
1352                         smps_mode = IEEE80211_SMPS_OFF;
1353         }
1354
1355         /* send SM PS frame to AP */
1356         err = ieee80211_send_smps_action(sdata, smps_mode,
1357                                          ap, ap);
1358         if (err)
1359                 sdata->u.mgd.req_smps = old_req;
1360
1361         return err;
1362 }
1363
1364 static int ieee80211_set_power_mgmt(struct wiphy *wiphy, struct net_device *dev,
1365                                     bool enabled, int timeout)
1366 {
1367         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1368         struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
1369         struct ieee80211_conf *conf = &local->hw.conf;
1370
1371         if (!(local->hw.flags & IEEE80211_HW_SUPPORTS_PS))
1372                 return -EOPNOTSUPP;
1373
1374         if (enabled == sdata->u.mgd.powersave &&
1375             timeout == conf->dynamic_ps_timeout)
1376                 return 0;
1377
1378         sdata->u.mgd.powersave = enabled;
1379         conf->dynamic_ps_timeout = timeout;
1380
1381         /* no change, but if automatic follow powersave */
1382         mutex_lock(&sdata->u.mgd.mtx);
1383         __ieee80211_request_smps(sdata, sdata->u.mgd.req_smps);
1384         mutex_unlock(&sdata->u.mgd.mtx);
1385
1386         if (local->hw.flags & IEEE80211_HW_SUPPORTS_DYNAMIC_PS)
1387                 ieee80211_hw_config(local, IEEE80211_CONF_CHANGE_PS);
1388
1389         ieee80211_recalc_ps(local, -1);
1390
1391         return 0;
1392 }
1393
1394 static int ieee80211_set_bitrate_mask(struct wiphy *wiphy,
1395                                       struct net_device *dev,
1396                                       const u8 *addr,
1397                                       const struct cfg80211_bitrate_mask *mask)
1398 {
1399         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1400         struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
1401         int i;
1402         u32 target_rate;
1403         struct ieee80211_supported_band *sband;
1404
1405         /*
1406          * This _could_ be supported by providing a hook for
1407          * drivers for this function, but at this point it
1408          * doesn't seem worth bothering.
1409          */
1410         if (local->hw.flags & IEEE80211_HW_HAS_RATE_CONTROL)
1411                 return -EOPNOTSUPP;
1412
1413         sband = local->hw.wiphy->bands[local->hw.conf.channel->band];
1414
1415         /*
1416          * target_rate = -1, rate->fixed = 0 means auto only, so use all rates
1417          * target_rate = X, rate->fixed = 1 means only rate X
1418          * target_rate = X, rate->fixed = 0 means all rates <= X
1419          */
1420         sdata->max_ratectrl_rateidx = -1;
1421         sdata->force_unicast_rateidx = -1;
1422
1423         if (mask->fixed)
1424                 target_rate = mask->fixed / 100;
1425         else if (mask->maxrate)
1426                 target_rate = mask->maxrate / 100;
1427         else
1428                 return 0;
1429
1430         for (i = 0; i< sband->n_bitrates; i++) {
1431                 if (target_rate != sband->bitrates[i].bitrate)
1432                         continue;
1433
1434                 /* requested bitrate found */
1435                 sdata->max_ratectrl_rateidx = i;
1436                 if (mask->fixed)
1437                         sdata->force_unicast_rateidx = i;
1438                 return 0;
1439         }
1440
1441         return -EINVAL;
1442 }
1443
1444 struct cfg80211_ops mac80211_config_ops = {
1445         .add_virtual_intf = ieee80211_add_iface,
1446         .del_virtual_intf = ieee80211_del_iface,
1447         .change_virtual_intf = ieee80211_change_iface,
1448         .add_key = ieee80211_add_key,
1449         .del_key = ieee80211_del_key,
1450         .get_key = ieee80211_get_key,
1451         .set_default_key = ieee80211_config_default_key,
1452         .set_default_mgmt_key = ieee80211_config_default_mgmt_key,
1453         .add_beacon = ieee80211_add_beacon,
1454         .set_beacon = ieee80211_set_beacon,
1455         .del_beacon = ieee80211_del_beacon,
1456         .add_station = ieee80211_add_station,
1457         .del_station = ieee80211_del_station,
1458         .change_station = ieee80211_change_station,
1459         .get_station = ieee80211_get_station,
1460         .dump_station = ieee80211_dump_station,
1461 #ifdef CONFIG_MAC80211_MESH
1462         .add_mpath = ieee80211_add_mpath,
1463         .del_mpath = ieee80211_del_mpath,
1464         .change_mpath = ieee80211_change_mpath,
1465         .get_mpath = ieee80211_get_mpath,
1466         .dump_mpath = ieee80211_dump_mpath,
1467         .set_mesh_params = ieee80211_set_mesh_params,
1468         .get_mesh_params = ieee80211_get_mesh_params,
1469 #endif
1470         .change_bss = ieee80211_change_bss,
1471         .set_txq_params = ieee80211_set_txq_params,
1472         .set_channel = ieee80211_set_channel,
1473         .suspend = ieee80211_suspend,
1474         .resume = ieee80211_resume,
1475         .scan = ieee80211_scan,
1476         .auth = ieee80211_auth,
1477         .assoc = ieee80211_assoc,
1478         .deauth = ieee80211_deauth,
1479         .disassoc = ieee80211_disassoc,
1480         .join_ibss = ieee80211_join_ibss,
1481         .leave_ibss = ieee80211_leave_ibss,
1482         .set_wiphy_params = ieee80211_set_wiphy_params,
1483         .set_tx_power = ieee80211_set_tx_power,
1484         .get_tx_power = ieee80211_get_tx_power,
1485         .set_wds_peer = ieee80211_set_wds_peer,
1486         .rfkill_poll = ieee80211_rfkill_poll,
1487         CFG80211_TESTMODE_CMD(ieee80211_testmode_cmd)
1488         .set_power_mgmt = ieee80211_set_power_mgmt,
1489         .set_bitrate_mask = ieee80211_set_bitrate_mask,
1490 };