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 <linux/if_ether.h> 16 #include <net/cfg80211.h> 17 #include "ieee80211_i.h" 18 #include "driver-ops.h" 19 #include "cfg.h" 20 #include "rate.h" 21 #include "mesh.h" 22 23 static struct net_device *ieee80211_add_iface(struct wiphy *wiphy, char *name, 24 enum nl80211_iftype type, 25 u32 *flags, 26 struct vif_params *params) 27 { 28 struct ieee80211_local *local = wiphy_priv(wiphy); 29 struct net_device *dev; 30 struct ieee80211_sub_if_data *sdata; 31 int err; 32 33 err = ieee80211_if_add(local, name, &dev, type, params); 34 if (err) 35 return ERR_PTR(err); 36 37 if (type == NL80211_IFTYPE_MONITOR && flags) { 38 sdata = IEEE80211_DEV_TO_SUB_IF(dev); 39 sdata->u.mntr_flags = *flags; 40 } 41 42 return dev; 43 } 44 45 static int ieee80211_del_iface(struct wiphy *wiphy, struct net_device *dev) 46 { 47 ieee80211_if_remove(IEEE80211_DEV_TO_SUB_IF(dev)); 48 49 return 0; 50 } 51 52 static int ieee80211_change_iface(struct wiphy *wiphy, 53 struct net_device *dev, 54 enum nl80211_iftype type, u32 *flags, 55 struct vif_params *params) 56 { 57 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 58 int ret; 59 60 ret = ieee80211_if_change_type(sdata, type); 61 if (ret) 62 return ret; 63 64 if (type == NL80211_IFTYPE_AP_VLAN && 65 params && params->use_4addr == 0) 66 RCU_INIT_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_set_noack_map(struct wiphy *wiphy, 106 struct net_device *dev, 107 u16 noack_map) 108 { 109 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 110 111 sdata->noack_map = noack_map; 112 return 0; 113 } 114 115 static int ieee80211_add_key(struct wiphy *wiphy, struct net_device *dev, 116 u8 key_idx, bool pairwise, const u8 *mac_addr, 117 struct key_params *params) 118 { 119 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 120 struct sta_info *sta = NULL; 121 struct ieee80211_key *key; 122 int err; 123 124 if (!ieee80211_sdata_running(sdata)) 125 return -ENETDOWN; 126 127 /* reject WEP and TKIP keys if WEP failed to initialize */ 128 switch (params->cipher) { 129 case WLAN_CIPHER_SUITE_WEP40: 130 case WLAN_CIPHER_SUITE_TKIP: 131 case WLAN_CIPHER_SUITE_WEP104: 132 if (IS_ERR(sdata->local->wep_tx_tfm)) 133 return -EINVAL; 134 break; 135 default: 136 break; 137 } 138 139 key = ieee80211_key_alloc(params->cipher, key_idx, params->key_len, 140 params->key, params->seq_len, params->seq); 141 if (IS_ERR(key)) 142 return PTR_ERR(key); 143 144 if (pairwise) 145 key->conf.flags |= IEEE80211_KEY_FLAG_PAIRWISE; 146 147 mutex_lock(&sdata->local->sta_mtx); 148 149 if (mac_addr) { 150 if (ieee80211_vif_is_mesh(&sdata->vif)) 151 sta = sta_info_get(sdata, mac_addr); 152 else 153 sta = sta_info_get_bss(sdata, mac_addr); 154 if (!sta) { 155 ieee80211_key_free(sdata->local, key); 156 err = -ENOENT; 157 goto out_unlock; 158 } 159 } 160 161 err = ieee80211_key_link(key, sdata, sta); 162 if (err) 163 ieee80211_key_free(sdata->local, key); 164 165 out_unlock: 166 mutex_unlock(&sdata->local->sta_mtx); 167 168 return err; 169 } 170 171 static int ieee80211_del_key(struct wiphy *wiphy, struct net_device *dev, 172 u8 key_idx, bool pairwise, const u8 *mac_addr) 173 { 174 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 175 struct ieee80211_local *local = sdata->local; 176 struct sta_info *sta; 177 struct ieee80211_key *key = NULL; 178 int ret; 179 180 mutex_lock(&local->sta_mtx); 181 mutex_lock(&local->key_mtx); 182 183 if (mac_addr) { 184 ret = -ENOENT; 185 186 sta = sta_info_get_bss(sdata, mac_addr); 187 if (!sta) 188 goto out_unlock; 189 190 if (pairwise) 191 key = key_mtx_dereference(local, sta->ptk); 192 else 193 key = key_mtx_dereference(local, sta->gtk[key_idx]); 194 } else 195 key = key_mtx_dereference(local, sdata->keys[key_idx]); 196 197 if (!key) { 198 ret = -ENOENT; 199 goto out_unlock; 200 } 201 202 __ieee80211_key_free(key); 203 204 ret = 0; 205 out_unlock: 206 mutex_unlock(&local->key_mtx); 207 mutex_unlock(&local->sta_mtx); 208 209 return ret; 210 } 211 212 static int ieee80211_get_key(struct wiphy *wiphy, struct net_device *dev, 213 u8 key_idx, bool pairwise, const u8 *mac_addr, 214 void *cookie, 215 void (*callback)(void *cookie, 216 struct key_params *params)) 217 { 218 struct ieee80211_sub_if_data *sdata; 219 struct sta_info *sta = NULL; 220 u8 seq[6] = {0}; 221 struct key_params params; 222 struct ieee80211_key *key = NULL; 223 u64 pn64; 224 u32 iv32; 225 u16 iv16; 226 int err = -ENOENT; 227 228 sdata = IEEE80211_DEV_TO_SUB_IF(dev); 229 230 rcu_read_lock(); 231 232 if (mac_addr) { 233 sta = sta_info_get_bss(sdata, mac_addr); 234 if (!sta) 235 goto out; 236 237 if (pairwise) 238 key = rcu_dereference(sta->ptk); 239 else if (key_idx < NUM_DEFAULT_KEYS) 240 key = rcu_dereference(sta->gtk[key_idx]); 241 } else 242 key = rcu_dereference(sdata->keys[key_idx]); 243 244 if (!key) 245 goto out; 246 247 memset(¶ms, 0, sizeof(params)); 248 249 params.cipher = key->conf.cipher; 250 251 switch (key->conf.cipher) { 252 case WLAN_CIPHER_SUITE_TKIP: 253 iv32 = key->u.tkip.tx.iv32; 254 iv16 = key->u.tkip.tx.iv16; 255 256 if (key->flags & KEY_FLAG_UPLOADED_TO_HARDWARE) 257 drv_get_tkip_seq(sdata->local, 258 key->conf.hw_key_idx, 259 &iv32, &iv16); 260 261 seq[0] = iv16 & 0xff; 262 seq[1] = (iv16 >> 8) & 0xff; 263 seq[2] = iv32 & 0xff; 264 seq[3] = (iv32 >> 8) & 0xff; 265 seq[4] = (iv32 >> 16) & 0xff; 266 seq[5] = (iv32 >> 24) & 0xff; 267 params.seq = seq; 268 params.seq_len = 6; 269 break; 270 case WLAN_CIPHER_SUITE_CCMP: 271 pn64 = atomic64_read(&key->u.ccmp.tx_pn); 272 seq[0] = pn64; 273 seq[1] = pn64 >> 8; 274 seq[2] = pn64 >> 16; 275 seq[3] = pn64 >> 24; 276 seq[4] = pn64 >> 32; 277 seq[5] = pn64 >> 40; 278 params.seq = seq; 279 params.seq_len = 6; 280 break; 281 case WLAN_CIPHER_SUITE_AES_CMAC: 282 pn64 = atomic64_read(&key->u.aes_cmac.tx_pn); 283 seq[0] = pn64; 284 seq[1] = pn64 >> 8; 285 seq[2] = pn64 >> 16; 286 seq[3] = pn64 >> 24; 287 seq[4] = pn64 >> 32; 288 seq[5] = pn64 >> 40; 289 params.seq = seq; 290 params.seq_len = 6; 291 break; 292 } 293 294 params.key = key->conf.key; 295 params.key_len = key->conf.keylen; 296 297 callback(cookie, ¶ms); 298 err = 0; 299 300 out: 301 rcu_read_unlock(); 302 return err; 303 } 304 305 static int ieee80211_config_default_key(struct wiphy *wiphy, 306 struct net_device *dev, 307 u8 key_idx, bool uni, 308 bool multi) 309 { 310 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 311 312 ieee80211_set_default_key(sdata, key_idx, uni, multi); 313 314 return 0; 315 } 316 317 static int ieee80211_config_default_mgmt_key(struct wiphy *wiphy, 318 struct net_device *dev, 319 u8 key_idx) 320 { 321 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 322 323 ieee80211_set_default_mgmt_key(sdata, key_idx); 324 325 return 0; 326 } 327 328 static void rate_idx_to_bitrate(struct rate_info *rate, struct sta_info *sta, int idx) 329 { 330 if (!(rate->flags & RATE_INFO_FLAGS_MCS)) { 331 struct ieee80211_supported_band *sband; 332 sband = sta->local->hw.wiphy->bands[ 333 sta->local->hw.conf.channel->band]; 334 rate->legacy = sband->bitrates[idx].bitrate; 335 } else 336 rate->mcs = idx; 337 } 338 339 static void sta_set_sinfo(struct sta_info *sta, struct station_info *sinfo) 340 { 341 struct ieee80211_sub_if_data *sdata = sta->sdata; 342 struct timespec uptime; 343 344 sinfo->generation = sdata->local->sta_generation; 345 346 sinfo->filled = STATION_INFO_INACTIVE_TIME | 347 STATION_INFO_RX_BYTES | 348 STATION_INFO_TX_BYTES | 349 STATION_INFO_RX_PACKETS | 350 STATION_INFO_TX_PACKETS | 351 STATION_INFO_TX_RETRIES | 352 STATION_INFO_TX_FAILED | 353 STATION_INFO_TX_BITRATE | 354 STATION_INFO_RX_BITRATE | 355 STATION_INFO_RX_DROP_MISC | 356 STATION_INFO_BSS_PARAM | 357 STATION_INFO_CONNECTED_TIME | 358 STATION_INFO_STA_FLAGS | 359 STATION_INFO_BEACON_LOSS_COUNT; 360 361 do_posix_clock_monotonic_gettime(&uptime); 362 sinfo->connected_time = uptime.tv_sec - sta->last_connected; 363 364 sinfo->inactive_time = jiffies_to_msecs(jiffies - sta->last_rx); 365 sinfo->rx_bytes = sta->rx_bytes; 366 sinfo->tx_bytes = sta->tx_bytes; 367 sinfo->rx_packets = sta->rx_packets; 368 sinfo->tx_packets = sta->tx_packets; 369 sinfo->tx_retries = sta->tx_retry_count; 370 sinfo->tx_failed = sta->tx_retry_failed; 371 sinfo->rx_dropped_misc = sta->rx_dropped; 372 sinfo->beacon_loss_count = sta->beacon_loss_count; 373 374 if ((sta->local->hw.flags & IEEE80211_HW_SIGNAL_DBM) || 375 (sta->local->hw.flags & IEEE80211_HW_SIGNAL_UNSPEC)) { 376 sinfo->filled |= STATION_INFO_SIGNAL | STATION_INFO_SIGNAL_AVG; 377 sinfo->signal = (s8)sta->last_signal; 378 sinfo->signal_avg = (s8) -ewma_read(&sta->avg_signal); 379 } 380 381 sinfo->txrate.flags = 0; 382 if (sta->last_tx_rate.flags & IEEE80211_TX_RC_MCS) 383 sinfo->txrate.flags |= RATE_INFO_FLAGS_MCS; 384 if (sta->last_tx_rate.flags & IEEE80211_TX_RC_40_MHZ_WIDTH) 385 sinfo->txrate.flags |= RATE_INFO_FLAGS_40_MHZ_WIDTH; 386 if (sta->last_tx_rate.flags & IEEE80211_TX_RC_SHORT_GI) 387 sinfo->txrate.flags |= RATE_INFO_FLAGS_SHORT_GI; 388 rate_idx_to_bitrate(&sinfo->txrate, sta, sta->last_tx_rate.idx); 389 390 sinfo->rxrate.flags = 0; 391 if (sta->last_rx_rate_flag & RX_FLAG_HT) 392 sinfo->rxrate.flags |= RATE_INFO_FLAGS_MCS; 393 if (sta->last_rx_rate_flag & RX_FLAG_40MHZ) 394 sinfo->rxrate.flags |= RATE_INFO_FLAGS_40_MHZ_WIDTH; 395 if (sta->last_rx_rate_flag & RX_FLAG_SHORT_GI) 396 sinfo->rxrate.flags |= RATE_INFO_FLAGS_SHORT_GI; 397 rate_idx_to_bitrate(&sinfo->rxrate, sta, sta->last_rx_rate_idx); 398 399 if (ieee80211_vif_is_mesh(&sdata->vif)) { 400 #ifdef CONFIG_MAC80211_MESH 401 sinfo->filled |= STATION_INFO_LLID | 402 STATION_INFO_PLID | 403 STATION_INFO_PLINK_STATE; 404 405 sinfo->llid = le16_to_cpu(sta->llid); 406 sinfo->plid = le16_to_cpu(sta->plid); 407 sinfo->plink_state = sta->plink_state; 408 #endif 409 } 410 411 sinfo->bss_param.flags = 0; 412 if (sdata->vif.bss_conf.use_cts_prot) 413 sinfo->bss_param.flags |= BSS_PARAM_FLAGS_CTS_PROT; 414 if (sdata->vif.bss_conf.use_short_preamble) 415 sinfo->bss_param.flags |= BSS_PARAM_FLAGS_SHORT_PREAMBLE; 416 if (sdata->vif.bss_conf.use_short_slot) 417 sinfo->bss_param.flags |= BSS_PARAM_FLAGS_SHORT_SLOT_TIME; 418 sinfo->bss_param.dtim_period = sdata->local->hw.conf.ps_dtim_period; 419 sinfo->bss_param.beacon_interval = sdata->vif.bss_conf.beacon_int; 420 421 sinfo->sta_flags.set = 0; 422 sinfo->sta_flags.mask = BIT(NL80211_STA_FLAG_AUTHORIZED) | 423 BIT(NL80211_STA_FLAG_SHORT_PREAMBLE) | 424 BIT(NL80211_STA_FLAG_WME) | 425 BIT(NL80211_STA_FLAG_MFP) | 426 BIT(NL80211_STA_FLAG_AUTHENTICATED) | 427 BIT(NL80211_STA_FLAG_TDLS_PEER); 428 if (test_sta_flag(sta, WLAN_STA_AUTHORIZED)) 429 sinfo->sta_flags.set |= BIT(NL80211_STA_FLAG_AUTHORIZED); 430 if (test_sta_flag(sta, WLAN_STA_SHORT_PREAMBLE)) 431 sinfo->sta_flags.set |= BIT(NL80211_STA_FLAG_SHORT_PREAMBLE); 432 if (test_sta_flag(sta, WLAN_STA_WME)) 433 sinfo->sta_flags.set |= BIT(NL80211_STA_FLAG_WME); 434 if (test_sta_flag(sta, WLAN_STA_MFP)) 435 sinfo->sta_flags.set |= BIT(NL80211_STA_FLAG_MFP); 436 if (test_sta_flag(sta, WLAN_STA_AUTH)) 437 sinfo->sta_flags.set |= BIT(NL80211_STA_FLAG_AUTHENTICATED); 438 if (test_sta_flag(sta, WLAN_STA_TDLS_PEER)) 439 sinfo->sta_flags.set |= BIT(NL80211_STA_FLAG_TDLS_PEER); 440 } 441 442 443 static int ieee80211_dump_station(struct wiphy *wiphy, struct net_device *dev, 444 int idx, u8 *mac, struct station_info *sinfo) 445 { 446 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 447 struct sta_info *sta; 448 int ret = -ENOENT; 449 450 rcu_read_lock(); 451 452 sta = sta_info_get_by_idx(sdata, idx); 453 if (sta) { 454 ret = 0; 455 memcpy(mac, sta->sta.addr, ETH_ALEN); 456 sta_set_sinfo(sta, sinfo); 457 } 458 459 rcu_read_unlock(); 460 461 return ret; 462 } 463 464 static int ieee80211_dump_survey(struct wiphy *wiphy, struct net_device *dev, 465 int idx, struct survey_info *survey) 466 { 467 struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr); 468 469 return drv_get_survey(local, idx, survey); 470 } 471 472 static int ieee80211_get_station(struct wiphy *wiphy, struct net_device *dev, 473 u8 *mac, struct station_info *sinfo) 474 { 475 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 476 struct sta_info *sta; 477 int ret = -ENOENT; 478 479 rcu_read_lock(); 480 481 sta = sta_info_get_bss(sdata, mac); 482 if (sta) { 483 ret = 0; 484 sta_set_sinfo(sta, sinfo); 485 } 486 487 rcu_read_unlock(); 488 489 return ret; 490 } 491 492 static void ieee80211_config_ap_ssid(struct ieee80211_sub_if_data *sdata, 493 struct beacon_parameters *params) 494 { 495 struct ieee80211_bss_conf *bss_conf = &sdata->vif.bss_conf; 496 497 bss_conf->ssid_len = params->ssid_len; 498 499 if (params->ssid_len) 500 memcpy(bss_conf->ssid, params->ssid, params->ssid_len); 501 502 bss_conf->hidden_ssid = 503 (params->hidden_ssid != NL80211_HIDDEN_SSID_NOT_IN_USE); 504 } 505 506 static int ieee80211_set_probe_resp(struct ieee80211_sub_if_data *sdata, 507 u8 *resp, size_t resp_len) 508 { 509 struct sk_buff *new, *old; 510 511 if (!resp || !resp_len) 512 return -EINVAL; 513 514 old = rtnl_dereference(sdata->u.ap.probe_resp); 515 516 new = dev_alloc_skb(resp_len); 517 if (!new) 518 return -ENOMEM; 519 520 memcpy(skb_put(new, resp_len), resp, resp_len); 521 522 rcu_assign_pointer(sdata->u.ap.probe_resp, new); 523 synchronize_rcu(); 524 525 if (old) 526 dev_kfree_skb(old); 527 528 return 0; 529 } 530 531 /* 532 * This handles both adding a beacon and setting new beacon info 533 */ 534 static int ieee80211_config_beacon(struct ieee80211_sub_if_data *sdata, 535 struct beacon_parameters *params) 536 { 537 struct beacon_data *new, *old; 538 int new_head_len, new_tail_len; 539 int size; 540 int err = -EINVAL; 541 u32 changed = 0; 542 543 old = rtnl_dereference(sdata->u.ap.beacon); 544 545 /* head must not be zero-length */ 546 if (params->head && !params->head_len) 547 return -EINVAL; 548 549 /* 550 * This is a kludge. beacon interval should really be part 551 * of the beacon information. 552 */ 553 if (params->interval && 554 (sdata->vif.bss_conf.beacon_int != params->interval)) { 555 sdata->vif.bss_conf.beacon_int = params->interval; 556 ieee80211_bss_info_change_notify(sdata, 557 BSS_CHANGED_BEACON_INT); 558 } 559 560 /* Need to have a beacon head if we don't have one yet */ 561 if (!params->head && !old) 562 return err; 563 564 /* sorry, no way to start beaconing without dtim period */ 565 if (!params->dtim_period && !old) 566 return err; 567 568 /* new or old head? */ 569 if (params->head) 570 new_head_len = params->head_len; 571 else 572 new_head_len = old->head_len; 573 574 /* new or old tail? */ 575 if (params->tail || !old) 576 /* params->tail_len will be zero for !params->tail */ 577 new_tail_len = params->tail_len; 578 else 579 new_tail_len = old->tail_len; 580 581 size = sizeof(*new) + new_head_len + new_tail_len; 582 583 new = kzalloc(size, GFP_KERNEL); 584 if (!new) 585 return -ENOMEM; 586 587 /* start filling the new info now */ 588 589 /* new or old dtim period? */ 590 if (params->dtim_period) 591 new->dtim_period = params->dtim_period; 592 else 593 new->dtim_period = old->dtim_period; 594 595 /* 596 * pointers go into the block we allocated, 597 * memory is | beacon_data | head | tail | 598 */ 599 new->head = ((u8 *) new) + sizeof(*new); 600 new->tail = new->head + new_head_len; 601 new->head_len = new_head_len; 602 new->tail_len = new_tail_len; 603 604 /* copy in head */ 605 if (params->head) 606 memcpy(new->head, params->head, new_head_len); 607 else 608 memcpy(new->head, old->head, new_head_len); 609 610 /* copy in optional tail */ 611 if (params->tail) 612 memcpy(new->tail, params->tail, new_tail_len); 613 else 614 if (old) 615 memcpy(new->tail, old->tail, new_tail_len); 616 617 sdata->vif.bss_conf.dtim_period = new->dtim_period; 618 619 rcu_assign_pointer(sdata->u.ap.beacon, new); 620 621 synchronize_rcu(); 622 623 kfree(old); 624 625 err = ieee80211_set_probe_resp(sdata, params->probe_resp, 626 params->probe_resp_len); 627 if (!err) 628 changed |= BSS_CHANGED_AP_PROBE_RESP; 629 630 ieee80211_config_ap_ssid(sdata, params); 631 changed |= BSS_CHANGED_BEACON_ENABLED | 632 BSS_CHANGED_BEACON | 633 BSS_CHANGED_SSID; 634 635 ieee80211_bss_info_change_notify(sdata, changed); 636 return 0; 637 } 638 639 static int ieee80211_add_beacon(struct wiphy *wiphy, struct net_device *dev, 640 struct beacon_parameters *params) 641 { 642 struct ieee80211_sub_if_data *sdata; 643 struct beacon_data *old; 644 struct ieee80211_sub_if_data *vlan; 645 int ret; 646 647 sdata = IEEE80211_DEV_TO_SUB_IF(dev); 648 649 old = rtnl_dereference(sdata->u.ap.beacon); 650 if (old) 651 return -EALREADY; 652 653 ret = ieee80211_config_beacon(sdata, params); 654 if (ret) 655 return ret; 656 657 /* 658 * Apply control port protocol, this allows us to 659 * not encrypt dynamic WEP control frames. 660 */ 661 sdata->control_port_protocol = params->crypto.control_port_ethertype; 662 sdata->control_port_no_encrypt = params->crypto.control_port_no_encrypt; 663 list_for_each_entry(vlan, &sdata->u.ap.vlans, u.vlan.list) { 664 vlan->control_port_protocol = 665 params->crypto.control_port_ethertype; 666 vlan->control_port_no_encrypt = 667 params->crypto.control_port_no_encrypt; 668 } 669 670 return 0; 671 } 672 673 static int ieee80211_set_beacon(struct wiphy *wiphy, struct net_device *dev, 674 struct beacon_parameters *params) 675 { 676 struct ieee80211_sub_if_data *sdata; 677 struct beacon_data *old; 678 679 sdata = IEEE80211_DEV_TO_SUB_IF(dev); 680 681 old = rtnl_dereference(sdata->u.ap.beacon); 682 if (!old) 683 return -ENOENT; 684 685 return ieee80211_config_beacon(sdata, params); 686 } 687 688 static int ieee80211_del_beacon(struct wiphy *wiphy, struct net_device *dev) 689 { 690 struct ieee80211_sub_if_data *sdata; 691 struct beacon_data *old; 692 693 sdata = IEEE80211_DEV_TO_SUB_IF(dev); 694 695 old = rtnl_dereference(sdata->u.ap.beacon); 696 if (!old) 697 return -ENOENT; 698 699 RCU_INIT_POINTER(sdata->u.ap.beacon, NULL); 700 synchronize_rcu(); 701 kfree(old); 702 703 ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_BEACON_ENABLED); 704 return 0; 705 } 706 707 /* Layer 2 Update frame (802.2 Type 1 LLC XID Update response) */ 708 struct iapp_layer2_update { 709 u8 da[ETH_ALEN]; /* broadcast */ 710 u8 sa[ETH_ALEN]; /* STA addr */ 711 __be16 len; /* 6 */ 712 u8 dsap; /* 0 */ 713 u8 ssap; /* 0 */ 714 u8 control; 715 u8 xid_info[3]; 716 } __packed; 717 718 static void ieee80211_send_layer2_update(struct sta_info *sta) 719 { 720 struct iapp_layer2_update *msg; 721 struct sk_buff *skb; 722 723 /* Send Level 2 Update Frame to update forwarding tables in layer 2 724 * bridge devices */ 725 726 skb = dev_alloc_skb(sizeof(*msg)); 727 if (!skb) 728 return; 729 msg = (struct iapp_layer2_update *)skb_put(skb, sizeof(*msg)); 730 731 /* 802.2 Type 1 Logical Link Control (LLC) Exchange Identifier (XID) 732 * Update response frame; IEEE Std 802.2-1998, 5.4.1.2.1 */ 733 734 memset(msg->da, 0xff, ETH_ALEN); 735 memcpy(msg->sa, sta->sta.addr, ETH_ALEN); 736 msg->len = htons(6); 737 msg->dsap = 0; 738 msg->ssap = 0x01; /* NULL LSAP, CR Bit: Response */ 739 msg->control = 0xaf; /* XID response lsb.1111F101. 740 * F=0 (no poll command; unsolicited frame) */ 741 msg->xid_info[0] = 0x81; /* XID format identifier */ 742 msg->xid_info[1] = 1; /* LLC types/classes: Type 1 LLC */ 743 msg->xid_info[2] = 0; /* XID sender's receive window size (RW) */ 744 745 skb->dev = sta->sdata->dev; 746 skb->protocol = eth_type_trans(skb, sta->sdata->dev); 747 memset(skb->cb, 0, sizeof(skb->cb)); 748 netif_rx_ni(skb); 749 } 750 751 static int sta_apply_parameters(struct ieee80211_local *local, 752 struct sta_info *sta, 753 struct station_parameters *params) 754 { 755 int ret = 0; 756 u32 rates; 757 int i, j; 758 struct ieee80211_supported_band *sband; 759 struct ieee80211_sub_if_data *sdata = sta->sdata; 760 u32 mask, set; 761 762 sband = local->hw.wiphy->bands[local->oper_channel->band]; 763 764 mask = params->sta_flags_mask; 765 set = params->sta_flags_set; 766 767 /* 768 * In mesh mode, we can clear AUTHENTICATED flag but must 769 * also make ASSOCIATED follow appropriately for the driver 770 * API. See also below, after AUTHORIZED changes. 771 */ 772 if (mask & BIT(NL80211_STA_FLAG_AUTHENTICATED)) { 773 /* cfg80211 should not allow this in non-mesh modes */ 774 if (WARN_ON(!ieee80211_vif_is_mesh(&sdata->vif))) 775 return -EINVAL; 776 777 if (set & BIT(NL80211_STA_FLAG_AUTHENTICATED) && 778 !test_sta_flag(sta, WLAN_STA_AUTH)) { 779 ret = sta_info_move_state(sta, IEEE80211_STA_AUTH); 780 if (ret) 781 return ret; 782 ret = sta_info_move_state(sta, IEEE80211_STA_ASSOC); 783 if (ret) 784 return ret; 785 } 786 } 787 788 if (mask & BIT(NL80211_STA_FLAG_AUTHORIZED)) { 789 if (set & BIT(NL80211_STA_FLAG_AUTHORIZED)) 790 ret = sta_info_move_state(sta, IEEE80211_STA_AUTHORIZED); 791 else if (test_sta_flag(sta, WLAN_STA_AUTHORIZED)) 792 ret = sta_info_move_state(sta, IEEE80211_STA_ASSOC); 793 if (ret) 794 return ret; 795 } 796 797 if (mask & BIT(NL80211_STA_FLAG_AUTHENTICATED)) { 798 /* cfg80211 should not allow this in non-mesh modes */ 799 if (WARN_ON(!ieee80211_vif_is_mesh(&sdata->vif))) 800 return -EINVAL; 801 802 if (!(set & BIT(NL80211_STA_FLAG_AUTHENTICATED)) && 803 test_sta_flag(sta, WLAN_STA_AUTH)) { 804 ret = sta_info_move_state(sta, IEEE80211_STA_AUTH); 805 if (ret) 806 return ret; 807 ret = sta_info_move_state(sta, IEEE80211_STA_NONE); 808 if (ret) 809 return ret; 810 } 811 } 812 813 814 if (mask & BIT(NL80211_STA_FLAG_SHORT_PREAMBLE)) { 815 if (set & BIT(NL80211_STA_FLAG_SHORT_PREAMBLE)) 816 set_sta_flag(sta, WLAN_STA_SHORT_PREAMBLE); 817 else 818 clear_sta_flag(sta, WLAN_STA_SHORT_PREAMBLE); 819 } 820 821 if (mask & BIT(NL80211_STA_FLAG_WME)) { 822 if (set & BIT(NL80211_STA_FLAG_WME)) { 823 set_sta_flag(sta, WLAN_STA_WME); 824 sta->sta.wme = true; 825 } else { 826 clear_sta_flag(sta, WLAN_STA_WME); 827 sta->sta.wme = false; 828 } 829 } 830 831 if (mask & BIT(NL80211_STA_FLAG_MFP)) { 832 if (set & BIT(NL80211_STA_FLAG_MFP)) 833 set_sta_flag(sta, WLAN_STA_MFP); 834 else 835 clear_sta_flag(sta, WLAN_STA_MFP); 836 } 837 838 if (mask & BIT(NL80211_STA_FLAG_TDLS_PEER)) { 839 if (set & BIT(NL80211_STA_FLAG_TDLS_PEER)) 840 set_sta_flag(sta, WLAN_STA_TDLS_PEER); 841 else 842 clear_sta_flag(sta, WLAN_STA_TDLS_PEER); 843 } 844 845 if (params->sta_modify_mask & STATION_PARAM_APPLY_UAPSD) { 846 sta->sta.uapsd_queues = params->uapsd_queues; 847 sta->sta.max_sp = params->max_sp; 848 } 849 850 /* 851 * cfg80211 validates this (1-2007) and allows setting the AID 852 * only when creating a new station entry 853 */ 854 if (params->aid) 855 sta->sta.aid = params->aid; 856 857 /* 858 * FIXME: updating the following information is racy when this 859 * function is called from ieee80211_change_station(). 860 * However, all this information should be static so 861 * maybe we should just reject attemps to change it. 862 */ 863 864 if (params->listen_interval >= 0) 865 sta->listen_interval = params->listen_interval; 866 867 if (params->supported_rates) { 868 rates = 0; 869 870 for (i = 0; i < params->supported_rates_len; i++) { 871 int rate = (params->supported_rates[i] & 0x7f) * 5; 872 for (j = 0; j < sband->n_bitrates; j++) { 873 if (sband->bitrates[j].bitrate == rate) 874 rates |= BIT(j); 875 } 876 } 877 sta->sta.supp_rates[local->oper_channel->band] = rates; 878 } 879 880 if (params->ht_capa) 881 ieee80211_ht_cap_ie_to_sta_ht_cap(sdata, sband, 882 params->ht_capa, 883 &sta->sta.ht_cap); 884 885 if (ieee80211_vif_is_mesh(&sdata->vif)) { 886 #ifdef CONFIG_MAC80211_MESH 887 if (sdata->u.mesh.security & IEEE80211_MESH_SEC_SECURED) 888 switch (params->plink_state) { 889 case NL80211_PLINK_LISTEN: 890 case NL80211_PLINK_ESTAB: 891 case NL80211_PLINK_BLOCKED: 892 sta->plink_state = params->plink_state; 893 break; 894 default: 895 /* nothing */ 896 break; 897 } 898 else 899 switch (params->plink_action) { 900 case PLINK_ACTION_OPEN: 901 mesh_plink_open(sta); 902 break; 903 case PLINK_ACTION_BLOCK: 904 mesh_plink_block(sta); 905 break; 906 } 907 #endif 908 } 909 910 return 0; 911 } 912 913 static int ieee80211_add_station(struct wiphy *wiphy, struct net_device *dev, 914 u8 *mac, struct station_parameters *params) 915 { 916 struct ieee80211_local *local = wiphy_priv(wiphy); 917 struct sta_info *sta; 918 struct ieee80211_sub_if_data *sdata; 919 int err; 920 int layer2_update; 921 922 if (params->vlan) { 923 sdata = IEEE80211_DEV_TO_SUB_IF(params->vlan); 924 925 if (sdata->vif.type != NL80211_IFTYPE_AP_VLAN && 926 sdata->vif.type != NL80211_IFTYPE_AP) 927 return -EINVAL; 928 } else 929 sdata = IEEE80211_DEV_TO_SUB_IF(dev); 930 931 if (compare_ether_addr(mac, sdata->vif.addr) == 0) 932 return -EINVAL; 933 934 if (is_multicast_ether_addr(mac)) 935 return -EINVAL; 936 937 sta = sta_info_alloc(sdata, mac, GFP_KERNEL); 938 if (!sta) 939 return -ENOMEM; 940 941 sta_info_pre_move_state(sta, IEEE80211_STA_AUTH); 942 sta_info_pre_move_state(sta, IEEE80211_STA_ASSOC); 943 944 err = sta_apply_parameters(local, sta, params); 945 if (err) { 946 sta_info_free(local, sta); 947 return err; 948 } 949 950 /* 951 * for TDLS, rate control should be initialized only when supported 952 * rates are known. 953 */ 954 if (!test_sta_flag(sta, WLAN_STA_TDLS_PEER)) 955 rate_control_rate_init(sta); 956 957 layer2_update = sdata->vif.type == NL80211_IFTYPE_AP_VLAN || 958 sdata->vif.type == NL80211_IFTYPE_AP; 959 960 err = sta_info_insert_rcu(sta); 961 if (err) { 962 rcu_read_unlock(); 963 return err; 964 } 965 966 if (layer2_update) 967 ieee80211_send_layer2_update(sta); 968 969 rcu_read_unlock(); 970 971 return 0; 972 } 973 974 static int ieee80211_del_station(struct wiphy *wiphy, struct net_device *dev, 975 u8 *mac) 976 { 977 struct ieee80211_local *local = wiphy_priv(wiphy); 978 struct ieee80211_sub_if_data *sdata; 979 980 sdata = IEEE80211_DEV_TO_SUB_IF(dev); 981 982 if (mac) 983 return sta_info_destroy_addr_bss(sdata, mac); 984 985 sta_info_flush(local, sdata); 986 return 0; 987 } 988 989 static int ieee80211_change_station(struct wiphy *wiphy, 990 struct net_device *dev, 991 u8 *mac, 992 struct station_parameters *params) 993 { 994 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 995 struct ieee80211_local *local = wiphy_priv(wiphy); 996 struct sta_info *sta; 997 struct ieee80211_sub_if_data *vlansdata; 998 int err; 999 1000 mutex_lock(&local->sta_mtx); 1001 1002 sta = sta_info_get_bss(sdata, mac); 1003 if (!sta) { 1004 mutex_unlock(&local->sta_mtx); 1005 return -ENOENT; 1006 } 1007 1008 /* in station mode, supported rates are only valid with TDLS */ 1009 if (sdata->vif.type == NL80211_IFTYPE_STATION && 1010 params->supported_rates && 1011 !test_sta_flag(sta, WLAN_STA_TDLS_PEER)) { 1012 mutex_unlock(&local->sta_mtx); 1013 return -EINVAL; 1014 } 1015 1016 if (params->vlan && params->vlan != sta->sdata->dev) { 1017 vlansdata = IEEE80211_DEV_TO_SUB_IF(params->vlan); 1018 1019 if (vlansdata->vif.type != NL80211_IFTYPE_AP_VLAN && 1020 vlansdata->vif.type != NL80211_IFTYPE_AP) { 1021 mutex_unlock(&local->sta_mtx); 1022 return -EINVAL; 1023 } 1024 1025 if (params->vlan->ieee80211_ptr->use_4addr) { 1026 if (vlansdata->u.vlan.sta) { 1027 mutex_unlock(&local->sta_mtx); 1028 return -EBUSY; 1029 } 1030 1031 rcu_assign_pointer(vlansdata->u.vlan.sta, sta); 1032 } 1033 1034 sta->sdata = vlansdata; 1035 ieee80211_send_layer2_update(sta); 1036 } 1037 1038 err = sta_apply_parameters(local, sta, params); 1039 if (err) { 1040 mutex_unlock(&local->sta_mtx); 1041 return err; 1042 } 1043 1044 if (test_sta_flag(sta, WLAN_STA_TDLS_PEER) && params->supported_rates) 1045 rate_control_rate_init(sta); 1046 1047 mutex_unlock(&local->sta_mtx); 1048 1049 if (sdata->vif.type == NL80211_IFTYPE_STATION && 1050 params->sta_flags_mask & BIT(NL80211_STA_FLAG_AUTHORIZED)) 1051 ieee80211_recalc_ps(local, -1); 1052 1053 return 0; 1054 } 1055 1056 #ifdef CONFIG_MAC80211_MESH 1057 static int ieee80211_add_mpath(struct wiphy *wiphy, struct net_device *dev, 1058 u8 *dst, u8 *next_hop) 1059 { 1060 struct ieee80211_sub_if_data *sdata; 1061 struct mesh_path *mpath; 1062 struct sta_info *sta; 1063 int err; 1064 1065 sdata = IEEE80211_DEV_TO_SUB_IF(dev); 1066 1067 rcu_read_lock(); 1068 sta = sta_info_get(sdata, next_hop); 1069 if (!sta) { 1070 rcu_read_unlock(); 1071 return -ENOENT; 1072 } 1073 1074 err = mesh_path_add(dst, sdata); 1075 if (err) { 1076 rcu_read_unlock(); 1077 return err; 1078 } 1079 1080 mpath = mesh_path_lookup(dst, sdata); 1081 if (!mpath) { 1082 rcu_read_unlock(); 1083 return -ENXIO; 1084 } 1085 mesh_path_fix_nexthop(mpath, sta); 1086 1087 rcu_read_unlock(); 1088 return 0; 1089 } 1090 1091 static int ieee80211_del_mpath(struct wiphy *wiphy, struct net_device *dev, 1092 u8 *dst) 1093 { 1094 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 1095 1096 if (dst) 1097 return mesh_path_del(dst, sdata); 1098 1099 mesh_path_flush_by_iface(sdata); 1100 return 0; 1101 } 1102 1103 static int ieee80211_change_mpath(struct wiphy *wiphy, 1104 struct net_device *dev, 1105 u8 *dst, u8 *next_hop) 1106 { 1107 struct ieee80211_sub_if_data *sdata; 1108 struct mesh_path *mpath; 1109 struct sta_info *sta; 1110 1111 sdata = IEEE80211_DEV_TO_SUB_IF(dev); 1112 1113 rcu_read_lock(); 1114 1115 sta = sta_info_get(sdata, next_hop); 1116 if (!sta) { 1117 rcu_read_unlock(); 1118 return -ENOENT; 1119 } 1120 1121 mpath = mesh_path_lookup(dst, sdata); 1122 if (!mpath) { 1123 rcu_read_unlock(); 1124 return -ENOENT; 1125 } 1126 1127 mesh_path_fix_nexthop(mpath, sta); 1128 1129 rcu_read_unlock(); 1130 return 0; 1131 } 1132 1133 static void mpath_set_pinfo(struct mesh_path *mpath, u8 *next_hop, 1134 struct mpath_info *pinfo) 1135 { 1136 struct sta_info *next_hop_sta = rcu_dereference(mpath->next_hop); 1137 1138 if (next_hop_sta) 1139 memcpy(next_hop, next_hop_sta->sta.addr, ETH_ALEN); 1140 else 1141 memset(next_hop, 0, ETH_ALEN); 1142 1143 pinfo->generation = mesh_paths_generation; 1144 1145 pinfo->filled = MPATH_INFO_FRAME_QLEN | 1146 MPATH_INFO_SN | 1147 MPATH_INFO_METRIC | 1148 MPATH_INFO_EXPTIME | 1149 MPATH_INFO_DISCOVERY_TIMEOUT | 1150 MPATH_INFO_DISCOVERY_RETRIES | 1151 MPATH_INFO_FLAGS; 1152 1153 pinfo->frame_qlen = mpath->frame_queue.qlen; 1154 pinfo->sn = mpath->sn; 1155 pinfo->metric = mpath->metric; 1156 if (time_before(jiffies, mpath->exp_time)) 1157 pinfo->exptime = jiffies_to_msecs(mpath->exp_time - jiffies); 1158 pinfo->discovery_timeout = 1159 jiffies_to_msecs(mpath->discovery_timeout); 1160 pinfo->discovery_retries = mpath->discovery_retries; 1161 pinfo->flags = 0; 1162 if (mpath->flags & MESH_PATH_ACTIVE) 1163 pinfo->flags |= NL80211_MPATH_FLAG_ACTIVE; 1164 if (mpath->flags & MESH_PATH_RESOLVING) 1165 pinfo->flags |= NL80211_MPATH_FLAG_RESOLVING; 1166 if (mpath->flags & MESH_PATH_SN_VALID) 1167 pinfo->flags |= NL80211_MPATH_FLAG_SN_VALID; 1168 if (mpath->flags & MESH_PATH_FIXED) 1169 pinfo->flags |= NL80211_MPATH_FLAG_FIXED; 1170 if (mpath->flags & MESH_PATH_RESOLVING) 1171 pinfo->flags |= NL80211_MPATH_FLAG_RESOLVING; 1172 1173 pinfo->flags = mpath->flags; 1174 } 1175 1176 static int ieee80211_get_mpath(struct wiphy *wiphy, struct net_device *dev, 1177 u8 *dst, u8 *next_hop, struct mpath_info *pinfo) 1178 1179 { 1180 struct ieee80211_sub_if_data *sdata; 1181 struct mesh_path *mpath; 1182 1183 sdata = IEEE80211_DEV_TO_SUB_IF(dev); 1184 1185 rcu_read_lock(); 1186 mpath = mesh_path_lookup(dst, sdata); 1187 if (!mpath) { 1188 rcu_read_unlock(); 1189 return -ENOENT; 1190 } 1191 memcpy(dst, mpath->dst, ETH_ALEN); 1192 mpath_set_pinfo(mpath, next_hop, pinfo); 1193 rcu_read_unlock(); 1194 return 0; 1195 } 1196 1197 static int ieee80211_dump_mpath(struct wiphy *wiphy, struct net_device *dev, 1198 int idx, u8 *dst, u8 *next_hop, 1199 struct mpath_info *pinfo) 1200 { 1201 struct ieee80211_sub_if_data *sdata; 1202 struct mesh_path *mpath; 1203 1204 sdata = IEEE80211_DEV_TO_SUB_IF(dev); 1205 1206 rcu_read_lock(); 1207 mpath = mesh_path_lookup_by_idx(idx, sdata); 1208 if (!mpath) { 1209 rcu_read_unlock(); 1210 return -ENOENT; 1211 } 1212 memcpy(dst, mpath->dst, ETH_ALEN); 1213 mpath_set_pinfo(mpath, next_hop, pinfo); 1214 rcu_read_unlock(); 1215 return 0; 1216 } 1217 1218 static int ieee80211_get_mesh_config(struct wiphy *wiphy, 1219 struct net_device *dev, 1220 struct mesh_config *conf) 1221 { 1222 struct ieee80211_sub_if_data *sdata; 1223 sdata = IEEE80211_DEV_TO_SUB_IF(dev); 1224 1225 memcpy(conf, &(sdata->u.mesh.mshcfg), sizeof(struct mesh_config)); 1226 return 0; 1227 } 1228 1229 static inline bool _chg_mesh_attr(enum nl80211_meshconf_params parm, u32 mask) 1230 { 1231 return (mask >> (parm-1)) & 0x1; 1232 } 1233 1234 static int copy_mesh_setup(struct ieee80211_if_mesh *ifmsh, 1235 const struct mesh_setup *setup) 1236 { 1237 u8 *new_ie; 1238 const u8 *old_ie; 1239 struct ieee80211_sub_if_data *sdata = container_of(ifmsh, 1240 struct ieee80211_sub_if_data, u.mesh); 1241 1242 /* allocate information elements */ 1243 new_ie = NULL; 1244 old_ie = ifmsh->ie; 1245 1246 if (setup->ie_len) { 1247 new_ie = kmemdup(setup->ie, setup->ie_len, 1248 GFP_KERNEL); 1249 if (!new_ie) 1250 return -ENOMEM; 1251 } 1252 ifmsh->ie_len = setup->ie_len; 1253 ifmsh->ie = new_ie; 1254 kfree(old_ie); 1255 1256 /* now copy the rest of the setup parameters */ 1257 ifmsh->mesh_id_len = setup->mesh_id_len; 1258 memcpy(ifmsh->mesh_id, setup->mesh_id, ifmsh->mesh_id_len); 1259 ifmsh->mesh_pp_id = setup->path_sel_proto; 1260 ifmsh->mesh_pm_id = setup->path_metric; 1261 ifmsh->security = IEEE80211_MESH_SEC_NONE; 1262 if (setup->is_authenticated) 1263 ifmsh->security |= IEEE80211_MESH_SEC_AUTHED; 1264 if (setup->is_secure) 1265 ifmsh->security |= IEEE80211_MESH_SEC_SECURED; 1266 1267 /* mcast rate setting in Mesh Node */ 1268 memcpy(sdata->vif.bss_conf.mcast_rate, setup->mcast_rate, 1269 sizeof(setup->mcast_rate)); 1270 1271 return 0; 1272 } 1273 1274 static int ieee80211_update_mesh_config(struct wiphy *wiphy, 1275 struct net_device *dev, u32 mask, 1276 const struct mesh_config *nconf) 1277 { 1278 struct mesh_config *conf; 1279 struct ieee80211_sub_if_data *sdata; 1280 struct ieee80211_if_mesh *ifmsh; 1281 1282 sdata = IEEE80211_DEV_TO_SUB_IF(dev); 1283 ifmsh = &sdata->u.mesh; 1284 1285 /* Set the config options which we are interested in setting */ 1286 conf = &(sdata->u.mesh.mshcfg); 1287 if (_chg_mesh_attr(NL80211_MESHCONF_RETRY_TIMEOUT, mask)) 1288 conf->dot11MeshRetryTimeout = nconf->dot11MeshRetryTimeout; 1289 if (_chg_mesh_attr(NL80211_MESHCONF_CONFIRM_TIMEOUT, mask)) 1290 conf->dot11MeshConfirmTimeout = nconf->dot11MeshConfirmTimeout; 1291 if (_chg_mesh_attr(NL80211_MESHCONF_HOLDING_TIMEOUT, mask)) 1292 conf->dot11MeshHoldingTimeout = nconf->dot11MeshHoldingTimeout; 1293 if (_chg_mesh_attr(NL80211_MESHCONF_MAX_PEER_LINKS, mask)) 1294 conf->dot11MeshMaxPeerLinks = nconf->dot11MeshMaxPeerLinks; 1295 if (_chg_mesh_attr(NL80211_MESHCONF_MAX_RETRIES, mask)) 1296 conf->dot11MeshMaxRetries = nconf->dot11MeshMaxRetries; 1297 if (_chg_mesh_attr(NL80211_MESHCONF_TTL, mask)) 1298 conf->dot11MeshTTL = nconf->dot11MeshTTL; 1299 if (_chg_mesh_attr(NL80211_MESHCONF_ELEMENT_TTL, mask)) 1300 conf->dot11MeshTTL = nconf->element_ttl; 1301 if (_chg_mesh_attr(NL80211_MESHCONF_AUTO_OPEN_PLINKS, mask)) 1302 conf->auto_open_plinks = nconf->auto_open_plinks; 1303 if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES, mask)) 1304 conf->dot11MeshHWMPmaxPREQretries = 1305 nconf->dot11MeshHWMPmaxPREQretries; 1306 if (_chg_mesh_attr(NL80211_MESHCONF_PATH_REFRESH_TIME, mask)) 1307 conf->path_refresh_time = nconf->path_refresh_time; 1308 if (_chg_mesh_attr(NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT, mask)) 1309 conf->min_discovery_timeout = nconf->min_discovery_timeout; 1310 if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT, mask)) 1311 conf->dot11MeshHWMPactivePathTimeout = 1312 nconf->dot11MeshHWMPactivePathTimeout; 1313 if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL, mask)) 1314 conf->dot11MeshHWMPpreqMinInterval = 1315 nconf->dot11MeshHWMPpreqMinInterval; 1316 if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_PERR_MIN_INTERVAL, mask)) 1317 conf->dot11MeshHWMPperrMinInterval = 1318 nconf->dot11MeshHWMPperrMinInterval; 1319 if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME, 1320 mask)) 1321 conf->dot11MeshHWMPnetDiameterTraversalTime = 1322 nconf->dot11MeshHWMPnetDiameterTraversalTime; 1323 if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_ROOTMODE, mask)) { 1324 conf->dot11MeshHWMPRootMode = nconf->dot11MeshHWMPRootMode; 1325 ieee80211_mesh_root_setup(ifmsh); 1326 } 1327 if (_chg_mesh_attr(NL80211_MESHCONF_GATE_ANNOUNCEMENTS, mask)) { 1328 /* our current gate announcement implementation rides on root 1329 * announcements, so require this ifmsh to also be a root node 1330 * */ 1331 if (nconf->dot11MeshGateAnnouncementProtocol && 1332 !conf->dot11MeshHWMPRootMode) { 1333 conf->dot11MeshHWMPRootMode = 1; 1334 ieee80211_mesh_root_setup(ifmsh); 1335 } 1336 conf->dot11MeshGateAnnouncementProtocol = 1337 nconf->dot11MeshGateAnnouncementProtocol; 1338 } 1339 if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_RANN_INTERVAL, mask)) { 1340 conf->dot11MeshHWMPRannInterval = 1341 nconf->dot11MeshHWMPRannInterval; 1342 } 1343 if (_chg_mesh_attr(NL80211_MESHCONF_FORWARDING, mask)) 1344 conf->dot11MeshForwarding = nconf->dot11MeshForwarding; 1345 return 0; 1346 } 1347 1348 static int ieee80211_join_mesh(struct wiphy *wiphy, struct net_device *dev, 1349 const struct mesh_config *conf, 1350 const struct mesh_setup *setup) 1351 { 1352 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 1353 struct ieee80211_if_mesh *ifmsh = &sdata->u.mesh; 1354 int err; 1355 1356 memcpy(&ifmsh->mshcfg, conf, sizeof(struct mesh_config)); 1357 err = copy_mesh_setup(ifmsh, setup); 1358 if (err) 1359 return err; 1360 ieee80211_start_mesh(sdata); 1361 1362 return 0; 1363 } 1364 1365 static int ieee80211_leave_mesh(struct wiphy *wiphy, struct net_device *dev) 1366 { 1367 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 1368 1369 ieee80211_stop_mesh(sdata); 1370 1371 return 0; 1372 } 1373 #endif 1374 1375 static int ieee80211_change_bss(struct wiphy *wiphy, 1376 struct net_device *dev, 1377 struct bss_parameters *params) 1378 { 1379 struct ieee80211_sub_if_data *sdata; 1380 u32 changed = 0; 1381 1382 sdata = IEEE80211_DEV_TO_SUB_IF(dev); 1383 1384 if (params->use_cts_prot >= 0) { 1385 sdata->vif.bss_conf.use_cts_prot = params->use_cts_prot; 1386 changed |= BSS_CHANGED_ERP_CTS_PROT; 1387 } 1388 if (params->use_short_preamble >= 0) { 1389 sdata->vif.bss_conf.use_short_preamble = 1390 params->use_short_preamble; 1391 changed |= BSS_CHANGED_ERP_PREAMBLE; 1392 } 1393 1394 if (!sdata->vif.bss_conf.use_short_slot && 1395 sdata->local->hw.conf.channel->band == IEEE80211_BAND_5GHZ) { 1396 sdata->vif.bss_conf.use_short_slot = true; 1397 changed |= BSS_CHANGED_ERP_SLOT; 1398 } 1399 1400 if (params->use_short_slot_time >= 0) { 1401 sdata->vif.bss_conf.use_short_slot = 1402 params->use_short_slot_time; 1403 changed |= BSS_CHANGED_ERP_SLOT; 1404 } 1405 1406 if (params->basic_rates) { 1407 int i, j; 1408 u32 rates = 0; 1409 struct ieee80211_local *local = wiphy_priv(wiphy); 1410 struct ieee80211_supported_band *sband = 1411 wiphy->bands[local->oper_channel->band]; 1412 1413 for (i = 0; i < params->basic_rates_len; i++) { 1414 int rate = (params->basic_rates[i] & 0x7f) * 5; 1415 for (j = 0; j < sband->n_bitrates; j++) { 1416 if (sband->bitrates[j].bitrate == rate) 1417 rates |= BIT(j); 1418 } 1419 } 1420 sdata->vif.bss_conf.basic_rates = rates; 1421 changed |= BSS_CHANGED_BASIC_RATES; 1422 } 1423 1424 if (params->ap_isolate >= 0) { 1425 if (params->ap_isolate) 1426 sdata->flags |= IEEE80211_SDATA_DONT_BRIDGE_PACKETS; 1427 else 1428 sdata->flags &= ~IEEE80211_SDATA_DONT_BRIDGE_PACKETS; 1429 } 1430 1431 if (params->ht_opmode >= 0) { 1432 sdata->vif.bss_conf.ht_operation_mode = 1433 (u16) params->ht_opmode; 1434 changed |= BSS_CHANGED_HT; 1435 } 1436 1437 ieee80211_bss_info_change_notify(sdata, changed); 1438 1439 return 0; 1440 } 1441 1442 static int ieee80211_set_txq_params(struct wiphy *wiphy, 1443 struct net_device *dev, 1444 struct ieee80211_txq_params *params) 1445 { 1446 struct ieee80211_local *local = wiphy_priv(wiphy); 1447 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 1448 struct ieee80211_tx_queue_params p; 1449 1450 if (!local->ops->conf_tx) 1451 return -EOPNOTSUPP; 1452 1453 memset(&p, 0, sizeof(p)); 1454 p.aifs = params->aifs; 1455 p.cw_max = params->cwmax; 1456 p.cw_min = params->cwmin; 1457 p.txop = params->txop; 1458 1459 /* 1460 * Setting tx queue params disables u-apsd because it's only 1461 * called in master mode. 1462 */ 1463 p.uapsd = false; 1464 1465 if (params->queue >= local->hw.queues) 1466 return -EINVAL; 1467 1468 sdata->tx_conf[params->queue] = p; 1469 if (drv_conf_tx(local, sdata, params->queue, &p)) { 1470 wiphy_debug(local->hw.wiphy, 1471 "failed to set TX queue parameters for queue %d\n", 1472 params->queue); 1473 return -EINVAL; 1474 } 1475 1476 return 0; 1477 } 1478 1479 static int ieee80211_set_channel(struct wiphy *wiphy, 1480 struct net_device *netdev, 1481 struct ieee80211_channel *chan, 1482 enum nl80211_channel_type channel_type) 1483 { 1484 struct ieee80211_local *local = wiphy_priv(wiphy); 1485 struct ieee80211_sub_if_data *sdata = NULL; 1486 struct ieee80211_channel *old_oper; 1487 enum nl80211_channel_type old_oper_type; 1488 enum nl80211_channel_type old_vif_oper_type= NL80211_CHAN_NO_HT; 1489 1490 if (netdev) 1491 sdata = IEEE80211_DEV_TO_SUB_IF(netdev); 1492 1493 switch (ieee80211_get_channel_mode(local, NULL)) { 1494 case CHAN_MODE_HOPPING: 1495 return -EBUSY; 1496 case CHAN_MODE_FIXED: 1497 if (local->oper_channel != chan) 1498 return -EBUSY; 1499 if (!sdata && local->_oper_channel_type == channel_type) 1500 return 0; 1501 break; 1502 case CHAN_MODE_UNDEFINED: 1503 break; 1504 } 1505 1506 if (sdata) 1507 old_vif_oper_type = sdata->vif.bss_conf.channel_type; 1508 old_oper_type = local->_oper_channel_type; 1509 1510 if (!ieee80211_set_channel_type(local, sdata, channel_type)) 1511 return -EBUSY; 1512 1513 old_oper = local->oper_channel; 1514 local->oper_channel = chan; 1515 1516 /* Update driver if changes were actually made. */ 1517 if ((old_oper != local->oper_channel) || 1518 (old_oper_type != local->_oper_channel_type)) 1519 ieee80211_hw_config(local, IEEE80211_CONF_CHANGE_CHANNEL); 1520 1521 if (sdata && sdata->vif.type != NL80211_IFTYPE_MONITOR && 1522 old_vif_oper_type != sdata->vif.bss_conf.channel_type) 1523 ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_HT); 1524 1525 return 0; 1526 } 1527 1528 #ifdef CONFIG_PM 1529 static int ieee80211_suspend(struct wiphy *wiphy, 1530 struct cfg80211_wowlan *wowlan) 1531 { 1532 return __ieee80211_suspend(wiphy_priv(wiphy), wowlan); 1533 } 1534 1535 static int ieee80211_resume(struct wiphy *wiphy) 1536 { 1537 return __ieee80211_resume(wiphy_priv(wiphy)); 1538 } 1539 #else 1540 #define ieee80211_suspend NULL 1541 #define ieee80211_resume NULL 1542 #endif 1543 1544 static int ieee80211_scan(struct wiphy *wiphy, 1545 struct net_device *dev, 1546 struct cfg80211_scan_request *req) 1547 { 1548 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 1549 1550 switch (ieee80211_vif_type_p2p(&sdata->vif)) { 1551 case NL80211_IFTYPE_STATION: 1552 case NL80211_IFTYPE_ADHOC: 1553 case NL80211_IFTYPE_MESH_POINT: 1554 case NL80211_IFTYPE_P2P_CLIENT: 1555 break; 1556 case NL80211_IFTYPE_P2P_GO: 1557 if (sdata->local->ops->hw_scan) 1558 break; 1559 /* 1560 * FIXME: implement NoA while scanning in software, 1561 * for now fall through to allow scanning only when 1562 * beaconing hasn't been configured yet 1563 */ 1564 case NL80211_IFTYPE_AP: 1565 if (sdata->u.ap.beacon) 1566 return -EOPNOTSUPP; 1567 break; 1568 default: 1569 return -EOPNOTSUPP; 1570 } 1571 1572 return ieee80211_request_scan(sdata, req); 1573 } 1574 1575 static int 1576 ieee80211_sched_scan_start(struct wiphy *wiphy, 1577 struct net_device *dev, 1578 struct cfg80211_sched_scan_request *req) 1579 { 1580 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 1581 1582 if (!sdata->local->ops->sched_scan_start) 1583 return -EOPNOTSUPP; 1584 1585 return ieee80211_request_sched_scan_start(sdata, req); 1586 } 1587 1588 static int 1589 ieee80211_sched_scan_stop(struct wiphy *wiphy, struct net_device *dev) 1590 { 1591 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 1592 1593 if (!sdata->local->ops->sched_scan_stop) 1594 return -EOPNOTSUPP; 1595 1596 return ieee80211_request_sched_scan_stop(sdata); 1597 } 1598 1599 static int ieee80211_auth(struct wiphy *wiphy, struct net_device *dev, 1600 struct cfg80211_auth_request *req) 1601 { 1602 return ieee80211_mgd_auth(IEEE80211_DEV_TO_SUB_IF(dev), req); 1603 } 1604 1605 static int ieee80211_assoc(struct wiphy *wiphy, struct net_device *dev, 1606 struct cfg80211_assoc_request *req) 1607 { 1608 struct ieee80211_local *local = wiphy_priv(wiphy); 1609 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 1610 1611 switch (ieee80211_get_channel_mode(local, sdata)) { 1612 case CHAN_MODE_HOPPING: 1613 return -EBUSY; 1614 case CHAN_MODE_FIXED: 1615 if (local->oper_channel == req->bss->channel) 1616 break; 1617 return -EBUSY; 1618 case CHAN_MODE_UNDEFINED: 1619 break; 1620 } 1621 1622 return ieee80211_mgd_assoc(IEEE80211_DEV_TO_SUB_IF(dev), req); 1623 } 1624 1625 static int ieee80211_deauth(struct wiphy *wiphy, struct net_device *dev, 1626 struct cfg80211_deauth_request *req, 1627 void *cookie) 1628 { 1629 return ieee80211_mgd_deauth(IEEE80211_DEV_TO_SUB_IF(dev), 1630 req, cookie); 1631 } 1632 1633 static int ieee80211_disassoc(struct wiphy *wiphy, struct net_device *dev, 1634 struct cfg80211_disassoc_request *req, 1635 void *cookie) 1636 { 1637 return ieee80211_mgd_disassoc(IEEE80211_DEV_TO_SUB_IF(dev), 1638 req, cookie); 1639 } 1640 1641 static int ieee80211_join_ibss(struct wiphy *wiphy, struct net_device *dev, 1642 struct cfg80211_ibss_params *params) 1643 { 1644 struct ieee80211_local *local = wiphy_priv(wiphy); 1645 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 1646 1647 switch (ieee80211_get_channel_mode(local, sdata)) { 1648 case CHAN_MODE_HOPPING: 1649 return -EBUSY; 1650 case CHAN_MODE_FIXED: 1651 if (!params->channel_fixed) 1652 return -EBUSY; 1653 if (local->oper_channel == params->channel) 1654 break; 1655 return -EBUSY; 1656 case CHAN_MODE_UNDEFINED: 1657 break; 1658 } 1659 1660 return ieee80211_ibss_join(sdata, params); 1661 } 1662 1663 static int ieee80211_leave_ibss(struct wiphy *wiphy, struct net_device *dev) 1664 { 1665 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 1666 1667 return ieee80211_ibss_leave(sdata); 1668 } 1669 1670 static int ieee80211_set_wiphy_params(struct wiphy *wiphy, u32 changed) 1671 { 1672 struct ieee80211_local *local = wiphy_priv(wiphy); 1673 int err; 1674 1675 if (changed & WIPHY_PARAM_FRAG_THRESHOLD) { 1676 err = drv_set_frag_threshold(local, wiphy->frag_threshold); 1677 1678 if (err) 1679 return err; 1680 } 1681 1682 if (changed & WIPHY_PARAM_COVERAGE_CLASS) { 1683 err = drv_set_coverage_class(local, wiphy->coverage_class); 1684 1685 if (err) 1686 return err; 1687 } 1688 1689 if (changed & WIPHY_PARAM_RTS_THRESHOLD) { 1690 err = drv_set_rts_threshold(local, wiphy->rts_threshold); 1691 1692 if (err) 1693 return err; 1694 } 1695 1696 if (changed & WIPHY_PARAM_RETRY_SHORT) 1697 local->hw.conf.short_frame_max_tx_count = wiphy->retry_short; 1698 if (changed & WIPHY_PARAM_RETRY_LONG) 1699 local->hw.conf.long_frame_max_tx_count = wiphy->retry_long; 1700 if (changed & 1701 (WIPHY_PARAM_RETRY_SHORT | WIPHY_PARAM_RETRY_LONG)) 1702 ieee80211_hw_config(local, IEEE80211_CONF_CHANGE_RETRY_LIMITS); 1703 1704 return 0; 1705 } 1706 1707 static int ieee80211_set_tx_power(struct wiphy *wiphy, 1708 enum nl80211_tx_power_setting type, int mbm) 1709 { 1710 struct ieee80211_local *local = wiphy_priv(wiphy); 1711 struct ieee80211_channel *chan = local->hw.conf.channel; 1712 u32 changes = 0; 1713 1714 switch (type) { 1715 case NL80211_TX_POWER_AUTOMATIC: 1716 local->user_power_level = -1; 1717 break; 1718 case NL80211_TX_POWER_LIMITED: 1719 if (mbm < 0 || (mbm % 100)) 1720 return -EOPNOTSUPP; 1721 local->user_power_level = MBM_TO_DBM(mbm); 1722 break; 1723 case NL80211_TX_POWER_FIXED: 1724 if (mbm < 0 || (mbm % 100)) 1725 return -EOPNOTSUPP; 1726 /* TODO: move to cfg80211 when it knows the channel */ 1727 if (MBM_TO_DBM(mbm) > chan->max_power) 1728 return -EINVAL; 1729 local->user_power_level = MBM_TO_DBM(mbm); 1730 break; 1731 } 1732 1733 ieee80211_hw_config(local, changes); 1734 1735 return 0; 1736 } 1737 1738 static int ieee80211_get_tx_power(struct wiphy *wiphy, int *dbm) 1739 { 1740 struct ieee80211_local *local = wiphy_priv(wiphy); 1741 1742 *dbm = local->hw.conf.power_level; 1743 1744 return 0; 1745 } 1746 1747 static int ieee80211_set_wds_peer(struct wiphy *wiphy, struct net_device *dev, 1748 const u8 *addr) 1749 { 1750 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 1751 1752 memcpy(&sdata->u.wds.remote_addr, addr, ETH_ALEN); 1753 1754 return 0; 1755 } 1756 1757 static void ieee80211_rfkill_poll(struct wiphy *wiphy) 1758 { 1759 struct ieee80211_local *local = wiphy_priv(wiphy); 1760 1761 drv_rfkill_poll(local); 1762 } 1763 1764 #ifdef CONFIG_NL80211_TESTMODE 1765 static int ieee80211_testmode_cmd(struct wiphy *wiphy, void *data, int len) 1766 { 1767 struct ieee80211_local *local = wiphy_priv(wiphy); 1768 1769 if (!local->ops->testmode_cmd) 1770 return -EOPNOTSUPP; 1771 1772 return local->ops->testmode_cmd(&local->hw, data, len); 1773 } 1774 1775 static int ieee80211_testmode_dump(struct wiphy *wiphy, 1776 struct sk_buff *skb, 1777 struct netlink_callback *cb, 1778 void *data, int len) 1779 { 1780 struct ieee80211_local *local = wiphy_priv(wiphy); 1781 1782 if (!local->ops->testmode_dump) 1783 return -EOPNOTSUPP; 1784 1785 return local->ops->testmode_dump(&local->hw, skb, cb, data, len); 1786 } 1787 #endif 1788 1789 int __ieee80211_request_smps(struct ieee80211_sub_if_data *sdata, 1790 enum ieee80211_smps_mode smps_mode) 1791 { 1792 const u8 *ap; 1793 enum ieee80211_smps_mode old_req; 1794 int err; 1795 1796 lockdep_assert_held(&sdata->u.mgd.mtx); 1797 1798 old_req = sdata->u.mgd.req_smps; 1799 sdata->u.mgd.req_smps = smps_mode; 1800 1801 if (old_req == smps_mode && 1802 smps_mode != IEEE80211_SMPS_AUTOMATIC) 1803 return 0; 1804 1805 /* 1806 * If not associated, or current association is not an HT 1807 * association, there's no need to send an action frame. 1808 */ 1809 if (!sdata->u.mgd.associated || 1810 sdata->vif.bss_conf.channel_type == NL80211_CHAN_NO_HT) { 1811 mutex_lock(&sdata->local->iflist_mtx); 1812 ieee80211_recalc_smps(sdata->local); 1813 mutex_unlock(&sdata->local->iflist_mtx); 1814 return 0; 1815 } 1816 1817 ap = sdata->u.mgd.associated->bssid; 1818 1819 if (smps_mode == IEEE80211_SMPS_AUTOMATIC) { 1820 if (sdata->u.mgd.powersave) 1821 smps_mode = IEEE80211_SMPS_DYNAMIC; 1822 else 1823 smps_mode = IEEE80211_SMPS_OFF; 1824 } 1825 1826 /* send SM PS frame to AP */ 1827 err = ieee80211_send_smps_action(sdata, smps_mode, 1828 ap, ap); 1829 if (err) 1830 sdata->u.mgd.req_smps = old_req; 1831 1832 return err; 1833 } 1834 1835 static int ieee80211_set_power_mgmt(struct wiphy *wiphy, struct net_device *dev, 1836 bool enabled, int timeout) 1837 { 1838 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 1839 struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr); 1840 1841 if (sdata->vif.type != NL80211_IFTYPE_STATION) 1842 return -EOPNOTSUPP; 1843 1844 if (!(local->hw.flags & IEEE80211_HW_SUPPORTS_PS)) 1845 return -EOPNOTSUPP; 1846 1847 if (enabled == sdata->u.mgd.powersave && 1848 timeout == local->dynamic_ps_forced_timeout) 1849 return 0; 1850 1851 sdata->u.mgd.powersave = enabled; 1852 local->dynamic_ps_forced_timeout = timeout; 1853 1854 /* no change, but if automatic follow powersave */ 1855 mutex_lock(&sdata->u.mgd.mtx); 1856 __ieee80211_request_smps(sdata, sdata->u.mgd.req_smps); 1857 mutex_unlock(&sdata->u.mgd.mtx); 1858 1859 if (local->hw.flags & IEEE80211_HW_SUPPORTS_DYNAMIC_PS) 1860 ieee80211_hw_config(local, IEEE80211_CONF_CHANGE_PS); 1861 1862 ieee80211_recalc_ps(local, -1); 1863 1864 return 0; 1865 } 1866 1867 static int ieee80211_set_cqm_rssi_config(struct wiphy *wiphy, 1868 struct net_device *dev, 1869 s32 rssi_thold, u32 rssi_hyst) 1870 { 1871 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 1872 struct ieee80211_vif *vif = &sdata->vif; 1873 struct ieee80211_bss_conf *bss_conf = &vif->bss_conf; 1874 1875 if (rssi_thold == bss_conf->cqm_rssi_thold && 1876 rssi_hyst == bss_conf->cqm_rssi_hyst) 1877 return 0; 1878 1879 bss_conf->cqm_rssi_thold = rssi_thold; 1880 bss_conf->cqm_rssi_hyst = rssi_hyst; 1881 1882 /* tell the driver upon association, unless already associated */ 1883 if (sdata->u.mgd.associated && 1884 sdata->vif.driver_flags & IEEE80211_VIF_SUPPORTS_CQM_RSSI) 1885 ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_CQM); 1886 1887 return 0; 1888 } 1889 1890 static int ieee80211_set_bitrate_mask(struct wiphy *wiphy, 1891 struct net_device *dev, 1892 const u8 *addr, 1893 const struct cfg80211_bitrate_mask *mask) 1894 { 1895 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 1896 struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr); 1897 int i, ret; 1898 1899 if (local->hw.flags & IEEE80211_HW_HAS_RATE_CONTROL) { 1900 ret = drv_set_bitrate_mask(local, sdata, mask); 1901 if (ret) 1902 return ret; 1903 } 1904 1905 for (i = 0; i < IEEE80211_NUM_BANDS; i++) { 1906 sdata->rc_rateidx_mask[i] = mask->control[i].legacy; 1907 memcpy(sdata->rc_rateidx_mcs_mask[i], mask->control[i].mcs, 1908 sizeof(mask->control[i].mcs)); 1909 } 1910 1911 return 0; 1912 } 1913 1914 static int ieee80211_remain_on_channel_hw(struct ieee80211_local *local, 1915 struct net_device *dev, 1916 struct ieee80211_channel *chan, 1917 enum nl80211_channel_type chantype, 1918 unsigned int duration, u64 *cookie) 1919 { 1920 int ret; 1921 u32 random_cookie; 1922 1923 lockdep_assert_held(&local->mtx); 1924 1925 if (local->hw_roc_cookie) 1926 return -EBUSY; 1927 /* must be nonzero */ 1928 random_cookie = random32() | 1; 1929 1930 *cookie = random_cookie; 1931 local->hw_roc_dev = dev; 1932 local->hw_roc_cookie = random_cookie; 1933 local->hw_roc_channel = chan; 1934 local->hw_roc_channel_type = chantype; 1935 local->hw_roc_duration = duration; 1936 ret = drv_remain_on_channel(local, chan, chantype, duration); 1937 if (ret) { 1938 local->hw_roc_channel = NULL; 1939 local->hw_roc_cookie = 0; 1940 } 1941 1942 return ret; 1943 } 1944 1945 static int ieee80211_remain_on_channel(struct wiphy *wiphy, 1946 struct net_device *dev, 1947 struct ieee80211_channel *chan, 1948 enum nl80211_channel_type channel_type, 1949 unsigned int duration, 1950 u64 *cookie) 1951 { 1952 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 1953 struct ieee80211_local *local = sdata->local; 1954 1955 if (local->ops->remain_on_channel) { 1956 int ret; 1957 1958 mutex_lock(&local->mtx); 1959 ret = ieee80211_remain_on_channel_hw(local, dev, 1960 chan, channel_type, 1961 duration, cookie); 1962 local->hw_roc_for_tx = false; 1963 mutex_unlock(&local->mtx); 1964 1965 return ret; 1966 } 1967 1968 return ieee80211_wk_remain_on_channel(sdata, chan, channel_type, 1969 duration, cookie); 1970 } 1971 1972 static int ieee80211_cancel_remain_on_channel_hw(struct ieee80211_local *local, 1973 u64 cookie) 1974 { 1975 int ret; 1976 1977 lockdep_assert_held(&local->mtx); 1978 1979 if (local->hw_roc_cookie != cookie) 1980 return -ENOENT; 1981 1982 ret = drv_cancel_remain_on_channel(local); 1983 if (ret) 1984 return ret; 1985 1986 local->hw_roc_cookie = 0; 1987 local->hw_roc_channel = NULL; 1988 1989 ieee80211_recalc_idle(local); 1990 1991 return 0; 1992 } 1993 1994 static int ieee80211_cancel_remain_on_channel(struct wiphy *wiphy, 1995 struct net_device *dev, 1996 u64 cookie) 1997 { 1998 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 1999 struct ieee80211_local *local = sdata->local; 2000 2001 if (local->ops->cancel_remain_on_channel) { 2002 int ret; 2003 2004 mutex_lock(&local->mtx); 2005 ret = ieee80211_cancel_remain_on_channel_hw(local, cookie); 2006 mutex_unlock(&local->mtx); 2007 2008 return ret; 2009 } 2010 2011 return ieee80211_wk_cancel_remain_on_channel(sdata, cookie); 2012 } 2013 2014 static enum work_done_result 2015 ieee80211_offchan_tx_done(struct ieee80211_work *wk, struct sk_buff *skb) 2016 { 2017 /* 2018 * Use the data embedded in the work struct for reporting 2019 * here so if the driver mangled the SKB before dropping 2020 * it (which is the only way we really should get here) 2021 * then we don't report mangled data. 2022 * 2023 * If there was no wait time, then by the time we get here 2024 * the driver will likely not have reported the status yet, 2025 * so in that case userspace will have to deal with it. 2026 */ 2027 2028 if (wk->offchan_tx.wait && !wk->offchan_tx.status) 2029 cfg80211_mgmt_tx_status(wk->sdata->dev, 2030 (unsigned long) wk->offchan_tx.frame, 2031 wk->ie, wk->ie_len, false, GFP_KERNEL); 2032 2033 return WORK_DONE_DESTROY; 2034 } 2035 2036 static int ieee80211_mgmt_tx(struct wiphy *wiphy, struct net_device *dev, 2037 struct ieee80211_channel *chan, bool offchan, 2038 enum nl80211_channel_type channel_type, 2039 bool channel_type_valid, unsigned int wait, 2040 const u8 *buf, size_t len, bool no_cck, 2041 bool dont_wait_for_ack, u64 *cookie) 2042 { 2043 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 2044 struct ieee80211_local *local = sdata->local; 2045 struct sk_buff *skb; 2046 struct sta_info *sta; 2047 struct ieee80211_work *wk; 2048 const struct ieee80211_mgmt *mgmt = (void *)buf; 2049 u32 flags; 2050 bool is_offchan = false; 2051 2052 if (dont_wait_for_ack) 2053 flags = IEEE80211_TX_CTL_NO_ACK; 2054 else 2055 flags = IEEE80211_TX_INTFL_NL80211_FRAME_TX | 2056 IEEE80211_TX_CTL_REQ_TX_STATUS; 2057 2058 /* Check that we are on the requested channel for transmission */ 2059 if (chan != local->tmp_channel && 2060 chan != local->oper_channel) 2061 is_offchan = true; 2062 if (channel_type_valid && 2063 (channel_type != local->tmp_channel_type && 2064 channel_type != local->_oper_channel_type)) 2065 is_offchan = true; 2066 2067 if (chan == local->hw_roc_channel) { 2068 /* TODO: check channel type? */ 2069 is_offchan = false; 2070 flags |= IEEE80211_TX_CTL_TX_OFFCHAN; 2071 } 2072 2073 if (no_cck) 2074 flags |= IEEE80211_TX_CTL_NO_CCK_RATE; 2075 2076 if (is_offchan && !offchan) 2077 return -EBUSY; 2078 2079 switch (sdata->vif.type) { 2080 case NL80211_IFTYPE_ADHOC: 2081 case NL80211_IFTYPE_AP: 2082 case NL80211_IFTYPE_AP_VLAN: 2083 case NL80211_IFTYPE_P2P_GO: 2084 case NL80211_IFTYPE_MESH_POINT: 2085 if (!ieee80211_is_action(mgmt->frame_control) || 2086 mgmt->u.action.category == WLAN_CATEGORY_PUBLIC) 2087 break; 2088 rcu_read_lock(); 2089 sta = sta_info_get(sdata, mgmt->da); 2090 rcu_read_unlock(); 2091 if (!sta) 2092 return -ENOLINK; 2093 break; 2094 case NL80211_IFTYPE_STATION: 2095 case NL80211_IFTYPE_P2P_CLIENT: 2096 break; 2097 default: 2098 return -EOPNOTSUPP; 2099 } 2100 2101 skb = dev_alloc_skb(local->hw.extra_tx_headroom + len); 2102 if (!skb) 2103 return -ENOMEM; 2104 skb_reserve(skb, local->hw.extra_tx_headroom); 2105 2106 memcpy(skb_put(skb, len), buf, len); 2107 2108 IEEE80211_SKB_CB(skb)->flags = flags; 2109 2110 skb->dev = sdata->dev; 2111 2112 *cookie = (unsigned long) skb; 2113 2114 if (is_offchan && local->ops->remain_on_channel) { 2115 unsigned int duration; 2116 int ret; 2117 2118 mutex_lock(&local->mtx); 2119 /* 2120 * If the duration is zero, then the driver 2121 * wouldn't actually do anything. Set it to 2122 * 100 for now. 2123 * 2124 * TODO: cancel the off-channel operation 2125 * when we get the SKB's TX status and 2126 * the wait time was zero before. 2127 */ 2128 duration = 100; 2129 if (wait) 2130 duration = wait; 2131 ret = ieee80211_remain_on_channel_hw(local, dev, chan, 2132 channel_type, 2133 duration, cookie); 2134 if (ret) { 2135 kfree_skb(skb); 2136 mutex_unlock(&local->mtx); 2137 return ret; 2138 } 2139 2140 local->hw_roc_for_tx = true; 2141 local->hw_roc_duration = wait; 2142 2143 /* 2144 * queue up frame for transmission after 2145 * ieee80211_ready_on_channel call 2146 */ 2147 2148 /* modify cookie to prevent API mismatches */ 2149 *cookie ^= 2; 2150 IEEE80211_SKB_CB(skb)->flags |= IEEE80211_TX_CTL_TX_OFFCHAN; 2151 local->hw_roc_skb = skb; 2152 local->hw_roc_skb_for_status = skb; 2153 mutex_unlock(&local->mtx); 2154 2155 return 0; 2156 } 2157 2158 /* 2159 * Can transmit right away if the channel was the 2160 * right one and there's no wait involved... If a 2161 * wait is involved, we might otherwise not be on 2162 * the right channel for long enough! 2163 */ 2164 if (!is_offchan && !wait && !sdata->vif.bss_conf.idle) { 2165 ieee80211_tx_skb(sdata, skb); 2166 return 0; 2167 } 2168 2169 wk = kzalloc(sizeof(*wk) + len, GFP_KERNEL); 2170 if (!wk) { 2171 kfree_skb(skb); 2172 return -ENOMEM; 2173 } 2174 2175 wk->type = IEEE80211_WORK_OFFCHANNEL_TX; 2176 wk->chan = chan; 2177 wk->chan_type = channel_type; 2178 wk->sdata = sdata; 2179 wk->done = ieee80211_offchan_tx_done; 2180 wk->offchan_tx.frame = skb; 2181 wk->offchan_tx.wait = wait; 2182 wk->ie_len = len; 2183 memcpy(wk->ie, buf, len); 2184 2185 ieee80211_add_work(wk); 2186 return 0; 2187 } 2188 2189 static int ieee80211_mgmt_tx_cancel_wait(struct wiphy *wiphy, 2190 struct net_device *dev, 2191 u64 cookie) 2192 { 2193 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 2194 struct ieee80211_local *local = sdata->local; 2195 struct ieee80211_work *wk; 2196 int ret = -ENOENT; 2197 2198 mutex_lock(&local->mtx); 2199 2200 if (local->ops->cancel_remain_on_channel) { 2201 cookie ^= 2; 2202 ret = ieee80211_cancel_remain_on_channel_hw(local, cookie); 2203 2204 if (ret == 0) { 2205 kfree_skb(local->hw_roc_skb); 2206 local->hw_roc_skb = NULL; 2207 local->hw_roc_skb_for_status = NULL; 2208 } 2209 2210 mutex_unlock(&local->mtx); 2211 2212 return ret; 2213 } 2214 2215 list_for_each_entry(wk, &local->work_list, list) { 2216 if (wk->sdata != sdata) 2217 continue; 2218 2219 if (wk->type != IEEE80211_WORK_OFFCHANNEL_TX) 2220 continue; 2221 2222 if (cookie != (unsigned long) wk->offchan_tx.frame) 2223 continue; 2224 2225 wk->timeout = jiffies; 2226 2227 ieee80211_queue_work(&local->hw, &local->work_work); 2228 ret = 0; 2229 break; 2230 } 2231 mutex_unlock(&local->mtx); 2232 2233 return ret; 2234 } 2235 2236 static void ieee80211_mgmt_frame_register(struct wiphy *wiphy, 2237 struct net_device *dev, 2238 u16 frame_type, bool reg) 2239 { 2240 struct ieee80211_local *local = wiphy_priv(wiphy); 2241 2242 if (frame_type != (IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_PROBE_REQ)) 2243 return; 2244 2245 if (reg) 2246 local->probe_req_reg++; 2247 else 2248 local->probe_req_reg--; 2249 2250 ieee80211_queue_work(&local->hw, &local->reconfig_filter); 2251 } 2252 2253 static int ieee80211_set_antenna(struct wiphy *wiphy, u32 tx_ant, u32 rx_ant) 2254 { 2255 struct ieee80211_local *local = wiphy_priv(wiphy); 2256 2257 if (local->started) 2258 return -EOPNOTSUPP; 2259 2260 return drv_set_antenna(local, tx_ant, rx_ant); 2261 } 2262 2263 static int ieee80211_get_antenna(struct wiphy *wiphy, u32 *tx_ant, u32 *rx_ant) 2264 { 2265 struct ieee80211_local *local = wiphy_priv(wiphy); 2266 2267 return drv_get_antenna(local, tx_ant, rx_ant); 2268 } 2269 2270 static int ieee80211_set_ringparam(struct wiphy *wiphy, u32 tx, u32 rx) 2271 { 2272 struct ieee80211_local *local = wiphy_priv(wiphy); 2273 2274 return drv_set_ringparam(local, tx, rx); 2275 } 2276 2277 static void ieee80211_get_ringparam(struct wiphy *wiphy, 2278 u32 *tx, u32 *tx_max, u32 *rx, u32 *rx_max) 2279 { 2280 struct ieee80211_local *local = wiphy_priv(wiphy); 2281 2282 drv_get_ringparam(local, tx, tx_max, rx, rx_max); 2283 } 2284 2285 static int ieee80211_set_rekey_data(struct wiphy *wiphy, 2286 struct net_device *dev, 2287 struct cfg80211_gtk_rekey_data *data) 2288 { 2289 struct ieee80211_local *local = wiphy_priv(wiphy); 2290 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 2291 2292 if (!local->ops->set_rekey_data) 2293 return -EOPNOTSUPP; 2294 2295 drv_set_rekey_data(local, sdata, data); 2296 2297 return 0; 2298 } 2299 2300 static void ieee80211_tdls_add_ext_capab(struct sk_buff *skb) 2301 { 2302 u8 *pos = (void *)skb_put(skb, 7); 2303 2304 *pos++ = WLAN_EID_EXT_CAPABILITY; 2305 *pos++ = 5; /* len */ 2306 *pos++ = 0x0; 2307 *pos++ = 0x0; 2308 *pos++ = 0x0; 2309 *pos++ = 0x0; 2310 *pos++ = WLAN_EXT_CAPA5_TDLS_ENABLED; 2311 } 2312 2313 static u16 ieee80211_get_tdls_sta_capab(struct ieee80211_sub_if_data *sdata) 2314 { 2315 struct ieee80211_local *local = sdata->local; 2316 u16 capab; 2317 2318 capab = 0; 2319 if (local->oper_channel->band != IEEE80211_BAND_2GHZ) 2320 return capab; 2321 2322 if (!(local->hw.flags & IEEE80211_HW_2GHZ_SHORT_SLOT_INCAPABLE)) 2323 capab |= WLAN_CAPABILITY_SHORT_SLOT_TIME; 2324 if (!(local->hw.flags & IEEE80211_HW_2GHZ_SHORT_PREAMBLE_INCAPABLE)) 2325 capab |= WLAN_CAPABILITY_SHORT_PREAMBLE; 2326 2327 return capab; 2328 } 2329 2330 static void ieee80211_tdls_add_link_ie(struct sk_buff *skb, u8 *src_addr, 2331 u8 *peer, u8 *bssid) 2332 { 2333 struct ieee80211_tdls_lnkie *lnkid; 2334 2335 lnkid = (void *)skb_put(skb, sizeof(struct ieee80211_tdls_lnkie)); 2336 2337 lnkid->ie_type = WLAN_EID_LINK_ID; 2338 lnkid->ie_len = sizeof(struct ieee80211_tdls_lnkie) - 2; 2339 2340 memcpy(lnkid->bssid, bssid, ETH_ALEN); 2341 memcpy(lnkid->init_sta, src_addr, ETH_ALEN); 2342 memcpy(lnkid->resp_sta, peer, ETH_ALEN); 2343 } 2344 2345 static int 2346 ieee80211_prep_tdls_encap_data(struct wiphy *wiphy, struct net_device *dev, 2347 u8 *peer, u8 action_code, u8 dialog_token, 2348 u16 status_code, struct sk_buff *skb) 2349 { 2350 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 2351 struct ieee80211_tdls_data *tf; 2352 2353 tf = (void *)skb_put(skb, offsetof(struct ieee80211_tdls_data, u)); 2354 2355 memcpy(tf->da, peer, ETH_ALEN); 2356 memcpy(tf->sa, sdata->vif.addr, ETH_ALEN); 2357 tf->ether_type = cpu_to_be16(ETH_P_TDLS); 2358 tf->payload_type = WLAN_TDLS_SNAP_RFTYPE; 2359 2360 switch (action_code) { 2361 case WLAN_TDLS_SETUP_REQUEST: 2362 tf->category = WLAN_CATEGORY_TDLS; 2363 tf->action_code = WLAN_TDLS_SETUP_REQUEST; 2364 2365 skb_put(skb, sizeof(tf->u.setup_req)); 2366 tf->u.setup_req.dialog_token = dialog_token; 2367 tf->u.setup_req.capability = 2368 cpu_to_le16(ieee80211_get_tdls_sta_capab(sdata)); 2369 2370 ieee80211_add_srates_ie(&sdata->vif, skb); 2371 ieee80211_add_ext_srates_ie(&sdata->vif, skb); 2372 ieee80211_tdls_add_ext_capab(skb); 2373 break; 2374 case WLAN_TDLS_SETUP_RESPONSE: 2375 tf->category = WLAN_CATEGORY_TDLS; 2376 tf->action_code = WLAN_TDLS_SETUP_RESPONSE; 2377 2378 skb_put(skb, sizeof(tf->u.setup_resp)); 2379 tf->u.setup_resp.status_code = cpu_to_le16(status_code); 2380 tf->u.setup_resp.dialog_token = dialog_token; 2381 tf->u.setup_resp.capability = 2382 cpu_to_le16(ieee80211_get_tdls_sta_capab(sdata)); 2383 2384 ieee80211_add_srates_ie(&sdata->vif, skb); 2385 ieee80211_add_ext_srates_ie(&sdata->vif, skb); 2386 ieee80211_tdls_add_ext_capab(skb); 2387 break; 2388 case WLAN_TDLS_SETUP_CONFIRM: 2389 tf->category = WLAN_CATEGORY_TDLS; 2390 tf->action_code = WLAN_TDLS_SETUP_CONFIRM; 2391 2392 skb_put(skb, sizeof(tf->u.setup_cfm)); 2393 tf->u.setup_cfm.status_code = cpu_to_le16(status_code); 2394 tf->u.setup_cfm.dialog_token = dialog_token; 2395 break; 2396 case WLAN_TDLS_TEARDOWN: 2397 tf->category = WLAN_CATEGORY_TDLS; 2398 tf->action_code = WLAN_TDLS_TEARDOWN; 2399 2400 skb_put(skb, sizeof(tf->u.teardown)); 2401 tf->u.teardown.reason_code = cpu_to_le16(status_code); 2402 break; 2403 case WLAN_TDLS_DISCOVERY_REQUEST: 2404 tf->category = WLAN_CATEGORY_TDLS; 2405 tf->action_code = WLAN_TDLS_DISCOVERY_REQUEST; 2406 2407 skb_put(skb, sizeof(tf->u.discover_req)); 2408 tf->u.discover_req.dialog_token = dialog_token; 2409 break; 2410 default: 2411 return -EINVAL; 2412 } 2413 2414 return 0; 2415 } 2416 2417 static int 2418 ieee80211_prep_tdls_direct(struct wiphy *wiphy, struct net_device *dev, 2419 u8 *peer, u8 action_code, u8 dialog_token, 2420 u16 status_code, struct sk_buff *skb) 2421 { 2422 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 2423 struct ieee80211_mgmt *mgmt; 2424 2425 mgmt = (void *)skb_put(skb, 24); 2426 memset(mgmt, 0, 24); 2427 memcpy(mgmt->da, peer, ETH_ALEN); 2428 memcpy(mgmt->sa, sdata->vif.addr, ETH_ALEN); 2429 memcpy(mgmt->bssid, sdata->u.mgd.bssid, ETH_ALEN); 2430 2431 mgmt->frame_control = cpu_to_le16(IEEE80211_FTYPE_MGMT | 2432 IEEE80211_STYPE_ACTION); 2433 2434 switch (action_code) { 2435 case WLAN_PUB_ACTION_TDLS_DISCOVER_RES: 2436 skb_put(skb, 1 + sizeof(mgmt->u.action.u.tdls_discover_resp)); 2437 mgmt->u.action.category = WLAN_CATEGORY_PUBLIC; 2438 mgmt->u.action.u.tdls_discover_resp.action_code = 2439 WLAN_PUB_ACTION_TDLS_DISCOVER_RES; 2440 mgmt->u.action.u.tdls_discover_resp.dialog_token = 2441 dialog_token; 2442 mgmt->u.action.u.tdls_discover_resp.capability = 2443 cpu_to_le16(ieee80211_get_tdls_sta_capab(sdata)); 2444 2445 ieee80211_add_srates_ie(&sdata->vif, skb); 2446 ieee80211_add_ext_srates_ie(&sdata->vif, skb); 2447 ieee80211_tdls_add_ext_capab(skb); 2448 break; 2449 default: 2450 return -EINVAL; 2451 } 2452 2453 return 0; 2454 } 2455 2456 static int ieee80211_tdls_mgmt(struct wiphy *wiphy, struct net_device *dev, 2457 u8 *peer, u8 action_code, u8 dialog_token, 2458 u16 status_code, const u8 *extra_ies, 2459 size_t extra_ies_len) 2460 { 2461 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 2462 struct ieee80211_local *local = sdata->local; 2463 struct ieee80211_tx_info *info; 2464 struct sk_buff *skb = NULL; 2465 bool send_direct; 2466 int ret; 2467 2468 if (!(wiphy->flags & WIPHY_FLAG_SUPPORTS_TDLS)) 2469 return -ENOTSUPP; 2470 2471 /* make sure we are in managed mode, and associated */ 2472 if (sdata->vif.type != NL80211_IFTYPE_STATION || 2473 !sdata->u.mgd.associated) 2474 return -EINVAL; 2475 2476 #ifdef CONFIG_MAC80211_VERBOSE_TDLS_DEBUG 2477 printk(KERN_DEBUG "TDLS mgmt action %d peer %pM\n", action_code, peer); 2478 #endif 2479 2480 skb = dev_alloc_skb(local->hw.extra_tx_headroom + 2481 max(sizeof(struct ieee80211_mgmt), 2482 sizeof(struct ieee80211_tdls_data)) + 2483 50 + /* supported rates */ 2484 7 + /* ext capab */ 2485 extra_ies_len + 2486 sizeof(struct ieee80211_tdls_lnkie)); 2487 if (!skb) 2488 return -ENOMEM; 2489 2490 info = IEEE80211_SKB_CB(skb); 2491 skb_reserve(skb, local->hw.extra_tx_headroom); 2492 2493 switch (action_code) { 2494 case WLAN_TDLS_SETUP_REQUEST: 2495 case WLAN_TDLS_SETUP_RESPONSE: 2496 case WLAN_TDLS_SETUP_CONFIRM: 2497 case WLAN_TDLS_TEARDOWN: 2498 case WLAN_TDLS_DISCOVERY_REQUEST: 2499 ret = ieee80211_prep_tdls_encap_data(wiphy, dev, peer, 2500 action_code, dialog_token, 2501 status_code, skb); 2502 send_direct = false; 2503 break; 2504 case WLAN_PUB_ACTION_TDLS_DISCOVER_RES: 2505 ret = ieee80211_prep_tdls_direct(wiphy, dev, peer, action_code, 2506 dialog_token, status_code, 2507 skb); 2508 send_direct = true; 2509 break; 2510 default: 2511 ret = -ENOTSUPP; 2512 break; 2513 } 2514 2515 if (ret < 0) 2516 goto fail; 2517 2518 if (extra_ies_len) 2519 memcpy(skb_put(skb, extra_ies_len), extra_ies, extra_ies_len); 2520 2521 /* the TDLS link IE is always added last */ 2522 switch (action_code) { 2523 case WLAN_TDLS_SETUP_REQUEST: 2524 case WLAN_TDLS_SETUP_CONFIRM: 2525 case WLAN_TDLS_TEARDOWN: 2526 case WLAN_TDLS_DISCOVERY_REQUEST: 2527 /* we are the initiator */ 2528 ieee80211_tdls_add_link_ie(skb, sdata->vif.addr, peer, 2529 sdata->u.mgd.bssid); 2530 break; 2531 case WLAN_TDLS_SETUP_RESPONSE: 2532 case WLAN_PUB_ACTION_TDLS_DISCOVER_RES: 2533 /* we are the responder */ 2534 ieee80211_tdls_add_link_ie(skb, peer, sdata->vif.addr, 2535 sdata->u.mgd.bssid); 2536 break; 2537 default: 2538 ret = -ENOTSUPP; 2539 goto fail; 2540 } 2541 2542 if (send_direct) { 2543 ieee80211_tx_skb(sdata, skb); 2544 return 0; 2545 } 2546 2547 /* 2548 * According to 802.11z: Setup req/resp are sent in AC_BK, otherwise 2549 * we should default to AC_VI. 2550 */ 2551 switch (action_code) { 2552 case WLAN_TDLS_SETUP_REQUEST: 2553 case WLAN_TDLS_SETUP_RESPONSE: 2554 skb_set_queue_mapping(skb, IEEE80211_AC_BK); 2555 skb->priority = 2; 2556 break; 2557 default: 2558 skb_set_queue_mapping(skb, IEEE80211_AC_VI); 2559 skb->priority = 5; 2560 break; 2561 } 2562 2563 /* disable bottom halves when entering the Tx path */ 2564 local_bh_disable(); 2565 ret = ieee80211_subif_start_xmit(skb, dev); 2566 local_bh_enable(); 2567 2568 return ret; 2569 2570 fail: 2571 dev_kfree_skb(skb); 2572 return ret; 2573 } 2574 2575 static int ieee80211_tdls_oper(struct wiphy *wiphy, struct net_device *dev, 2576 u8 *peer, enum nl80211_tdls_operation oper) 2577 { 2578 struct sta_info *sta; 2579 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 2580 2581 if (!(wiphy->flags & WIPHY_FLAG_SUPPORTS_TDLS)) 2582 return -ENOTSUPP; 2583 2584 if (sdata->vif.type != NL80211_IFTYPE_STATION) 2585 return -EINVAL; 2586 2587 #ifdef CONFIG_MAC80211_VERBOSE_TDLS_DEBUG 2588 printk(KERN_DEBUG "TDLS oper %d peer %pM\n", oper, peer); 2589 #endif 2590 2591 switch (oper) { 2592 case NL80211_TDLS_ENABLE_LINK: 2593 rcu_read_lock(); 2594 sta = sta_info_get(sdata, peer); 2595 if (!sta) { 2596 rcu_read_unlock(); 2597 return -ENOLINK; 2598 } 2599 2600 set_sta_flag(sta, WLAN_STA_TDLS_PEER_AUTH); 2601 rcu_read_unlock(); 2602 break; 2603 case NL80211_TDLS_DISABLE_LINK: 2604 return sta_info_destroy_addr(sdata, peer); 2605 case NL80211_TDLS_TEARDOWN: 2606 case NL80211_TDLS_SETUP: 2607 case NL80211_TDLS_DISCOVERY_REQ: 2608 /* We don't support in-driver setup/teardown/discovery */ 2609 return -ENOTSUPP; 2610 default: 2611 return -ENOTSUPP; 2612 } 2613 2614 return 0; 2615 } 2616 2617 static int ieee80211_probe_client(struct wiphy *wiphy, struct net_device *dev, 2618 const u8 *peer, u64 *cookie) 2619 { 2620 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 2621 struct ieee80211_local *local = sdata->local; 2622 struct ieee80211_qos_hdr *nullfunc; 2623 struct sk_buff *skb; 2624 int size = sizeof(*nullfunc); 2625 __le16 fc; 2626 bool qos; 2627 struct ieee80211_tx_info *info; 2628 struct sta_info *sta; 2629 2630 rcu_read_lock(); 2631 sta = sta_info_get(sdata, peer); 2632 if (sta) { 2633 qos = test_sta_flag(sta, WLAN_STA_WME); 2634 rcu_read_unlock(); 2635 } else { 2636 rcu_read_unlock(); 2637 return -ENOLINK; 2638 } 2639 2640 if (qos) { 2641 fc = cpu_to_le16(IEEE80211_FTYPE_DATA | 2642 IEEE80211_STYPE_QOS_NULLFUNC | 2643 IEEE80211_FCTL_FROMDS); 2644 } else { 2645 size -= 2; 2646 fc = cpu_to_le16(IEEE80211_FTYPE_DATA | 2647 IEEE80211_STYPE_NULLFUNC | 2648 IEEE80211_FCTL_FROMDS); 2649 } 2650 2651 skb = dev_alloc_skb(local->hw.extra_tx_headroom + size); 2652 if (!skb) 2653 return -ENOMEM; 2654 2655 skb->dev = dev; 2656 2657 skb_reserve(skb, local->hw.extra_tx_headroom); 2658 2659 nullfunc = (void *) skb_put(skb, size); 2660 nullfunc->frame_control = fc; 2661 nullfunc->duration_id = 0; 2662 memcpy(nullfunc->addr1, sta->sta.addr, ETH_ALEN); 2663 memcpy(nullfunc->addr2, sdata->vif.addr, ETH_ALEN); 2664 memcpy(nullfunc->addr3, sdata->vif.addr, ETH_ALEN); 2665 nullfunc->seq_ctrl = 0; 2666 2667 info = IEEE80211_SKB_CB(skb); 2668 2669 info->flags |= IEEE80211_TX_CTL_REQ_TX_STATUS | 2670 IEEE80211_TX_INTFL_NL80211_FRAME_TX; 2671 2672 skb_set_queue_mapping(skb, IEEE80211_AC_VO); 2673 skb->priority = 7; 2674 if (qos) 2675 nullfunc->qos_ctrl = cpu_to_le16(7); 2676 2677 local_bh_disable(); 2678 ieee80211_xmit(sdata, skb); 2679 local_bh_enable(); 2680 2681 *cookie = (unsigned long) skb; 2682 return 0; 2683 } 2684 2685 static struct ieee80211_channel * 2686 ieee80211_wiphy_get_channel(struct wiphy *wiphy) 2687 { 2688 struct ieee80211_local *local = wiphy_priv(wiphy); 2689 2690 return local->oper_channel; 2691 } 2692 2693 struct cfg80211_ops mac80211_config_ops = { 2694 .add_virtual_intf = ieee80211_add_iface, 2695 .del_virtual_intf = ieee80211_del_iface, 2696 .change_virtual_intf = ieee80211_change_iface, 2697 .add_key = ieee80211_add_key, 2698 .del_key = ieee80211_del_key, 2699 .get_key = ieee80211_get_key, 2700 .set_default_key = ieee80211_config_default_key, 2701 .set_default_mgmt_key = ieee80211_config_default_mgmt_key, 2702 .add_beacon = ieee80211_add_beacon, 2703 .set_beacon = ieee80211_set_beacon, 2704 .del_beacon = ieee80211_del_beacon, 2705 .add_station = ieee80211_add_station, 2706 .del_station = ieee80211_del_station, 2707 .change_station = ieee80211_change_station, 2708 .get_station = ieee80211_get_station, 2709 .dump_station = ieee80211_dump_station, 2710 .dump_survey = ieee80211_dump_survey, 2711 #ifdef CONFIG_MAC80211_MESH 2712 .add_mpath = ieee80211_add_mpath, 2713 .del_mpath = ieee80211_del_mpath, 2714 .change_mpath = ieee80211_change_mpath, 2715 .get_mpath = ieee80211_get_mpath, 2716 .dump_mpath = ieee80211_dump_mpath, 2717 .update_mesh_config = ieee80211_update_mesh_config, 2718 .get_mesh_config = ieee80211_get_mesh_config, 2719 .join_mesh = ieee80211_join_mesh, 2720 .leave_mesh = ieee80211_leave_mesh, 2721 #endif 2722 .change_bss = ieee80211_change_bss, 2723 .set_txq_params = ieee80211_set_txq_params, 2724 .set_channel = ieee80211_set_channel, 2725 .suspend = ieee80211_suspend, 2726 .resume = ieee80211_resume, 2727 .scan = ieee80211_scan, 2728 .sched_scan_start = ieee80211_sched_scan_start, 2729 .sched_scan_stop = ieee80211_sched_scan_stop, 2730 .auth = ieee80211_auth, 2731 .assoc = ieee80211_assoc, 2732 .deauth = ieee80211_deauth, 2733 .disassoc = ieee80211_disassoc, 2734 .join_ibss = ieee80211_join_ibss, 2735 .leave_ibss = ieee80211_leave_ibss, 2736 .set_wiphy_params = ieee80211_set_wiphy_params, 2737 .set_tx_power = ieee80211_set_tx_power, 2738 .get_tx_power = ieee80211_get_tx_power, 2739 .set_wds_peer = ieee80211_set_wds_peer, 2740 .rfkill_poll = ieee80211_rfkill_poll, 2741 CFG80211_TESTMODE_CMD(ieee80211_testmode_cmd) 2742 CFG80211_TESTMODE_DUMP(ieee80211_testmode_dump) 2743 .set_power_mgmt = ieee80211_set_power_mgmt, 2744 .set_bitrate_mask = ieee80211_set_bitrate_mask, 2745 .remain_on_channel = ieee80211_remain_on_channel, 2746 .cancel_remain_on_channel = ieee80211_cancel_remain_on_channel, 2747 .mgmt_tx = ieee80211_mgmt_tx, 2748 .mgmt_tx_cancel_wait = ieee80211_mgmt_tx_cancel_wait, 2749 .set_cqm_rssi_config = ieee80211_set_cqm_rssi_config, 2750 .mgmt_frame_register = ieee80211_mgmt_frame_register, 2751 .set_antenna = ieee80211_set_antenna, 2752 .get_antenna = ieee80211_get_antenna, 2753 .set_ringparam = ieee80211_set_ringparam, 2754 .get_ringparam = ieee80211_get_ringparam, 2755 .set_rekey_data = ieee80211_set_rekey_data, 2756 .tdls_oper = ieee80211_tdls_oper, 2757 .tdls_mgmt = ieee80211_tdls_mgmt, 2758 .probe_client = ieee80211_probe_client, 2759 .get_channel = ieee80211_wiphy_get_channel, 2760 .set_noack_map = ieee80211_set_noack_map, 2761 }; 2762