1 /* 2 * mac80211 configuration hooks for cfg80211 3 * 4 * Copyright 2006-2010 Johannes Berg <johannes@sipsolutions.net> 5 * Copyright 2013-2014 Intel Mobile Communications GmbH 6 * 7 * This file is GPLv2 as found in COPYING. 8 */ 9 10 #include <linux/ieee80211.h> 11 #include <linux/nl80211.h> 12 #include <linux/rtnetlink.h> 13 #include <linux/slab.h> 14 #include <net/net_namespace.h> 15 #include <linux/rcupdate.h> 16 #include <linux/if_ether.h> 17 #include <net/cfg80211.h> 18 #include "ieee80211_i.h" 19 #include "driver-ops.h" 20 #include "cfg.h" 21 #include "rate.h" 22 #include "mesh.h" 23 #include "wme.h" 24 25 static struct wireless_dev *ieee80211_add_iface(struct wiphy *wiphy, 26 const char *name, 27 unsigned char name_assign_type, 28 enum nl80211_iftype type, 29 u32 *flags, 30 struct vif_params *params) 31 { 32 struct ieee80211_local *local = wiphy_priv(wiphy); 33 struct wireless_dev *wdev; 34 struct ieee80211_sub_if_data *sdata; 35 int err; 36 37 err = ieee80211_if_add(local, name, name_assign_type, &wdev, type, params); 38 if (err) 39 return ERR_PTR(err); 40 41 if (type == NL80211_IFTYPE_MONITOR && flags) { 42 sdata = IEEE80211_WDEV_TO_SUB_IF(wdev); 43 sdata->u.mntr_flags = *flags; 44 } 45 46 return wdev; 47 } 48 49 static int ieee80211_del_iface(struct wiphy *wiphy, struct wireless_dev *wdev) 50 { 51 ieee80211_if_remove(IEEE80211_WDEV_TO_SUB_IF(wdev)); 52 53 return 0; 54 } 55 56 static int ieee80211_change_iface(struct wiphy *wiphy, 57 struct net_device *dev, 58 enum nl80211_iftype type, u32 *flags, 59 struct vif_params *params) 60 { 61 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 62 int ret; 63 64 ret = ieee80211_if_change_type(sdata, type); 65 if (ret) 66 return ret; 67 68 if (type == NL80211_IFTYPE_AP_VLAN && 69 params && params->use_4addr == 0) 70 RCU_INIT_POINTER(sdata->u.vlan.sta, NULL); 71 else if (type == NL80211_IFTYPE_STATION && 72 params && params->use_4addr >= 0) 73 sdata->u.mgd.use_4addr = params->use_4addr; 74 75 if (sdata->vif.type == NL80211_IFTYPE_MONITOR && flags) { 76 struct ieee80211_local *local = sdata->local; 77 78 if (ieee80211_sdata_running(sdata)) { 79 u32 mask = MONITOR_FLAG_COOK_FRAMES | 80 MONITOR_FLAG_ACTIVE; 81 82 /* 83 * Prohibit MONITOR_FLAG_COOK_FRAMES and 84 * MONITOR_FLAG_ACTIVE to be changed while the 85 * interface is up. 86 * Else we would need to add a lot of cruft 87 * to update everything: 88 * cooked_mntrs, monitor and all fif_* counters 89 * reconfigure hardware 90 */ 91 if ((*flags & mask) != (sdata->u.mntr_flags & mask)) 92 return -EBUSY; 93 94 ieee80211_adjust_monitor_flags(sdata, -1); 95 sdata->u.mntr_flags = *flags; 96 ieee80211_adjust_monitor_flags(sdata, 1); 97 98 ieee80211_configure_filter(local); 99 } else { 100 /* 101 * Because the interface is down, ieee80211_do_stop 102 * and ieee80211_do_open take care of "everything" 103 * mentioned in the comment above. 104 */ 105 sdata->u.mntr_flags = *flags; 106 } 107 } 108 109 return 0; 110 } 111 112 static int ieee80211_start_p2p_device(struct wiphy *wiphy, 113 struct wireless_dev *wdev) 114 { 115 struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev); 116 int ret; 117 118 mutex_lock(&sdata->local->chanctx_mtx); 119 ret = ieee80211_check_combinations(sdata, NULL, 0, 0); 120 mutex_unlock(&sdata->local->chanctx_mtx); 121 if (ret < 0) 122 return ret; 123 124 return ieee80211_do_open(wdev, true); 125 } 126 127 static void ieee80211_stop_p2p_device(struct wiphy *wiphy, 128 struct wireless_dev *wdev) 129 { 130 ieee80211_sdata_stop(IEEE80211_WDEV_TO_SUB_IF(wdev)); 131 } 132 133 static int ieee80211_set_noack_map(struct wiphy *wiphy, 134 struct net_device *dev, 135 u16 noack_map) 136 { 137 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 138 139 sdata->noack_map = noack_map; 140 return 0; 141 } 142 143 static int ieee80211_add_key(struct wiphy *wiphy, struct net_device *dev, 144 u8 key_idx, bool pairwise, const u8 *mac_addr, 145 struct key_params *params) 146 { 147 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 148 struct ieee80211_local *local = sdata->local; 149 struct sta_info *sta = NULL; 150 const struct ieee80211_cipher_scheme *cs = NULL; 151 struct ieee80211_key *key; 152 int err; 153 154 if (!ieee80211_sdata_running(sdata)) 155 return -ENETDOWN; 156 157 /* reject WEP and TKIP keys if WEP failed to initialize */ 158 switch (params->cipher) { 159 case WLAN_CIPHER_SUITE_WEP40: 160 case WLAN_CIPHER_SUITE_TKIP: 161 case WLAN_CIPHER_SUITE_WEP104: 162 if (IS_ERR(local->wep_tx_tfm)) 163 return -EINVAL; 164 break; 165 case WLAN_CIPHER_SUITE_CCMP: 166 case WLAN_CIPHER_SUITE_CCMP_256: 167 case WLAN_CIPHER_SUITE_AES_CMAC: 168 case WLAN_CIPHER_SUITE_BIP_CMAC_256: 169 case WLAN_CIPHER_SUITE_BIP_GMAC_128: 170 case WLAN_CIPHER_SUITE_BIP_GMAC_256: 171 case WLAN_CIPHER_SUITE_GCMP: 172 case WLAN_CIPHER_SUITE_GCMP_256: 173 break; 174 default: 175 cs = ieee80211_cs_get(local, params->cipher, sdata->vif.type); 176 break; 177 } 178 179 key = ieee80211_key_alloc(params->cipher, key_idx, params->key_len, 180 params->key, params->seq_len, params->seq, 181 cs); 182 if (IS_ERR(key)) 183 return PTR_ERR(key); 184 185 if (pairwise) 186 key->conf.flags |= IEEE80211_KEY_FLAG_PAIRWISE; 187 188 mutex_lock(&local->sta_mtx); 189 190 if (mac_addr) { 191 if (ieee80211_vif_is_mesh(&sdata->vif)) 192 sta = sta_info_get(sdata, mac_addr); 193 else 194 sta = sta_info_get_bss(sdata, mac_addr); 195 /* 196 * The ASSOC test makes sure the driver is ready to 197 * receive the key. When wpa_supplicant has roamed 198 * using FT, it attempts to set the key before 199 * association has completed, this rejects that attempt 200 * so it will set the key again after association. 201 * 202 * TODO: accept the key if we have a station entry and 203 * add it to the device after the station. 204 */ 205 if (!sta || !test_sta_flag(sta, WLAN_STA_ASSOC)) { 206 ieee80211_key_free_unused(key); 207 err = -ENOENT; 208 goto out_unlock; 209 } 210 } 211 212 switch (sdata->vif.type) { 213 case NL80211_IFTYPE_STATION: 214 if (sdata->u.mgd.mfp != IEEE80211_MFP_DISABLED) 215 key->conf.flags |= IEEE80211_KEY_FLAG_RX_MGMT; 216 break; 217 case NL80211_IFTYPE_AP: 218 case NL80211_IFTYPE_AP_VLAN: 219 /* Keys without a station are used for TX only */ 220 if (key->sta && test_sta_flag(key->sta, WLAN_STA_MFP)) 221 key->conf.flags |= IEEE80211_KEY_FLAG_RX_MGMT; 222 break; 223 case NL80211_IFTYPE_ADHOC: 224 /* no MFP (yet) */ 225 break; 226 case NL80211_IFTYPE_MESH_POINT: 227 #ifdef CONFIG_MAC80211_MESH 228 if (sdata->u.mesh.security != IEEE80211_MESH_SEC_NONE) 229 key->conf.flags |= IEEE80211_KEY_FLAG_RX_MGMT; 230 break; 231 #endif 232 case NL80211_IFTYPE_WDS: 233 case NL80211_IFTYPE_MONITOR: 234 case NL80211_IFTYPE_P2P_DEVICE: 235 case NL80211_IFTYPE_UNSPECIFIED: 236 case NUM_NL80211_IFTYPES: 237 case NL80211_IFTYPE_P2P_CLIENT: 238 case NL80211_IFTYPE_P2P_GO: 239 case NL80211_IFTYPE_OCB: 240 /* shouldn't happen */ 241 WARN_ON_ONCE(1); 242 break; 243 } 244 245 if (sta) 246 sta->cipher_scheme = cs; 247 248 err = ieee80211_key_link(key, sdata, sta); 249 250 out_unlock: 251 mutex_unlock(&local->sta_mtx); 252 253 return err; 254 } 255 256 static int ieee80211_del_key(struct wiphy *wiphy, struct net_device *dev, 257 u8 key_idx, bool pairwise, const u8 *mac_addr) 258 { 259 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 260 struct ieee80211_local *local = sdata->local; 261 struct sta_info *sta; 262 struct ieee80211_key *key = NULL; 263 int ret; 264 265 mutex_lock(&local->sta_mtx); 266 mutex_lock(&local->key_mtx); 267 268 if (mac_addr) { 269 ret = -ENOENT; 270 271 sta = sta_info_get_bss(sdata, mac_addr); 272 if (!sta) 273 goto out_unlock; 274 275 if (pairwise) 276 key = key_mtx_dereference(local, sta->ptk[key_idx]); 277 else 278 key = key_mtx_dereference(local, sta->gtk[key_idx]); 279 } else 280 key = key_mtx_dereference(local, sdata->keys[key_idx]); 281 282 if (!key) { 283 ret = -ENOENT; 284 goto out_unlock; 285 } 286 287 ieee80211_key_free(key, true); 288 289 ret = 0; 290 out_unlock: 291 mutex_unlock(&local->key_mtx); 292 mutex_unlock(&local->sta_mtx); 293 294 return ret; 295 } 296 297 static int ieee80211_get_key(struct wiphy *wiphy, struct net_device *dev, 298 u8 key_idx, bool pairwise, const u8 *mac_addr, 299 void *cookie, 300 void (*callback)(void *cookie, 301 struct key_params *params)) 302 { 303 struct ieee80211_sub_if_data *sdata; 304 struct sta_info *sta = NULL; 305 u8 seq[6] = {0}; 306 struct key_params params; 307 struct ieee80211_key *key = NULL; 308 u64 pn64; 309 u32 iv32; 310 u16 iv16; 311 int err = -ENOENT; 312 313 sdata = IEEE80211_DEV_TO_SUB_IF(dev); 314 315 rcu_read_lock(); 316 317 if (mac_addr) { 318 sta = sta_info_get_bss(sdata, mac_addr); 319 if (!sta) 320 goto out; 321 322 if (pairwise && key_idx < NUM_DEFAULT_KEYS) 323 key = rcu_dereference(sta->ptk[key_idx]); 324 else if (!pairwise && 325 key_idx < NUM_DEFAULT_KEYS + NUM_DEFAULT_MGMT_KEYS) 326 key = rcu_dereference(sta->gtk[key_idx]); 327 } else 328 key = rcu_dereference(sdata->keys[key_idx]); 329 330 if (!key) 331 goto out; 332 333 memset(¶ms, 0, sizeof(params)); 334 335 params.cipher = key->conf.cipher; 336 337 switch (key->conf.cipher) { 338 case WLAN_CIPHER_SUITE_TKIP: 339 iv32 = key->u.tkip.tx.iv32; 340 iv16 = key->u.tkip.tx.iv16; 341 342 if (key->flags & KEY_FLAG_UPLOADED_TO_HARDWARE) 343 drv_get_tkip_seq(sdata->local, 344 key->conf.hw_key_idx, 345 &iv32, &iv16); 346 347 seq[0] = iv16 & 0xff; 348 seq[1] = (iv16 >> 8) & 0xff; 349 seq[2] = iv32 & 0xff; 350 seq[3] = (iv32 >> 8) & 0xff; 351 seq[4] = (iv32 >> 16) & 0xff; 352 seq[5] = (iv32 >> 24) & 0xff; 353 params.seq = seq; 354 params.seq_len = 6; 355 break; 356 case WLAN_CIPHER_SUITE_CCMP: 357 case WLAN_CIPHER_SUITE_CCMP_256: 358 pn64 = atomic64_read(&key->u.ccmp.tx_pn); 359 seq[0] = pn64; 360 seq[1] = pn64 >> 8; 361 seq[2] = pn64 >> 16; 362 seq[3] = pn64 >> 24; 363 seq[4] = pn64 >> 32; 364 seq[5] = pn64 >> 40; 365 params.seq = seq; 366 params.seq_len = 6; 367 break; 368 case WLAN_CIPHER_SUITE_AES_CMAC: 369 case WLAN_CIPHER_SUITE_BIP_CMAC_256: 370 pn64 = atomic64_read(&key->u.aes_cmac.tx_pn); 371 seq[0] = pn64; 372 seq[1] = pn64 >> 8; 373 seq[2] = pn64 >> 16; 374 seq[3] = pn64 >> 24; 375 seq[4] = pn64 >> 32; 376 seq[5] = pn64 >> 40; 377 params.seq = seq; 378 params.seq_len = 6; 379 break; 380 case WLAN_CIPHER_SUITE_BIP_GMAC_128: 381 case WLAN_CIPHER_SUITE_BIP_GMAC_256: 382 pn64 = atomic64_read(&key->u.aes_gmac.tx_pn); 383 seq[0] = pn64; 384 seq[1] = pn64 >> 8; 385 seq[2] = pn64 >> 16; 386 seq[3] = pn64 >> 24; 387 seq[4] = pn64 >> 32; 388 seq[5] = pn64 >> 40; 389 params.seq = seq; 390 params.seq_len = 6; 391 break; 392 case WLAN_CIPHER_SUITE_GCMP: 393 case WLAN_CIPHER_SUITE_GCMP_256: 394 pn64 = atomic64_read(&key->u.gcmp.tx_pn); 395 seq[0] = pn64; 396 seq[1] = pn64 >> 8; 397 seq[2] = pn64 >> 16; 398 seq[3] = pn64 >> 24; 399 seq[4] = pn64 >> 32; 400 seq[5] = pn64 >> 40; 401 params.seq = seq; 402 params.seq_len = 6; 403 break; 404 } 405 406 params.key = key->conf.key; 407 params.key_len = key->conf.keylen; 408 409 callback(cookie, ¶ms); 410 err = 0; 411 412 out: 413 rcu_read_unlock(); 414 return err; 415 } 416 417 static int ieee80211_config_default_key(struct wiphy *wiphy, 418 struct net_device *dev, 419 u8 key_idx, bool uni, 420 bool multi) 421 { 422 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 423 424 ieee80211_set_default_key(sdata, key_idx, uni, multi); 425 426 return 0; 427 } 428 429 static int ieee80211_config_default_mgmt_key(struct wiphy *wiphy, 430 struct net_device *dev, 431 u8 key_idx) 432 { 433 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 434 435 ieee80211_set_default_mgmt_key(sdata, key_idx); 436 437 return 0; 438 } 439 440 void sta_set_rate_info_tx(struct sta_info *sta, 441 const struct ieee80211_tx_rate *rate, 442 struct rate_info *rinfo) 443 { 444 rinfo->flags = 0; 445 if (rate->flags & IEEE80211_TX_RC_MCS) { 446 rinfo->flags |= RATE_INFO_FLAGS_MCS; 447 rinfo->mcs = rate->idx; 448 } else if (rate->flags & IEEE80211_TX_RC_VHT_MCS) { 449 rinfo->flags |= RATE_INFO_FLAGS_VHT_MCS; 450 rinfo->mcs = ieee80211_rate_get_vht_mcs(rate); 451 rinfo->nss = ieee80211_rate_get_vht_nss(rate); 452 } else { 453 struct ieee80211_supported_band *sband; 454 int shift = ieee80211_vif_get_shift(&sta->sdata->vif); 455 u16 brate; 456 457 sband = sta->local->hw.wiphy->bands[ 458 ieee80211_get_sdata_band(sta->sdata)]; 459 brate = sband->bitrates[rate->idx].bitrate; 460 rinfo->legacy = DIV_ROUND_UP(brate, 1 << shift); 461 } 462 if (rate->flags & IEEE80211_TX_RC_40_MHZ_WIDTH) 463 rinfo->bw = RATE_INFO_BW_40; 464 else if (rate->flags & IEEE80211_TX_RC_80_MHZ_WIDTH) 465 rinfo->bw = RATE_INFO_BW_80; 466 else if (rate->flags & IEEE80211_TX_RC_160_MHZ_WIDTH) 467 rinfo->bw = RATE_INFO_BW_160; 468 else 469 rinfo->bw = RATE_INFO_BW_20; 470 if (rate->flags & IEEE80211_TX_RC_SHORT_GI) 471 rinfo->flags |= RATE_INFO_FLAGS_SHORT_GI; 472 } 473 474 void sta_set_rate_info_rx(struct sta_info *sta, struct rate_info *rinfo) 475 { 476 rinfo->flags = 0; 477 478 if (sta->last_rx_rate_flag & RX_FLAG_HT) { 479 rinfo->flags |= RATE_INFO_FLAGS_MCS; 480 rinfo->mcs = sta->last_rx_rate_idx; 481 } else if (sta->last_rx_rate_flag & RX_FLAG_VHT) { 482 rinfo->flags |= RATE_INFO_FLAGS_VHT_MCS; 483 rinfo->nss = sta->last_rx_rate_vht_nss; 484 rinfo->mcs = sta->last_rx_rate_idx; 485 } else { 486 struct ieee80211_supported_band *sband; 487 int shift = ieee80211_vif_get_shift(&sta->sdata->vif); 488 u16 brate; 489 490 sband = sta->local->hw.wiphy->bands[ 491 ieee80211_get_sdata_band(sta->sdata)]; 492 brate = sband->bitrates[sta->last_rx_rate_idx].bitrate; 493 rinfo->legacy = DIV_ROUND_UP(brate, 1 << shift); 494 } 495 496 if (sta->last_rx_rate_flag & RX_FLAG_SHORT_GI) 497 rinfo->flags |= RATE_INFO_FLAGS_SHORT_GI; 498 499 if (sta->last_rx_rate_flag & RX_FLAG_5MHZ) 500 rinfo->bw = RATE_INFO_BW_5; 501 else if (sta->last_rx_rate_flag & RX_FLAG_10MHZ) 502 rinfo->bw = RATE_INFO_BW_10; 503 else if (sta->last_rx_rate_flag & RX_FLAG_40MHZ) 504 rinfo->bw = RATE_INFO_BW_40; 505 else if (sta->last_rx_rate_vht_flag & RX_VHT_FLAG_80MHZ) 506 rinfo->bw = RATE_INFO_BW_80; 507 else if (sta->last_rx_rate_vht_flag & RX_VHT_FLAG_160MHZ) 508 rinfo->bw = RATE_INFO_BW_160; 509 else 510 rinfo->bw = RATE_INFO_BW_20; 511 } 512 513 static int ieee80211_dump_station(struct wiphy *wiphy, struct net_device *dev, 514 int idx, u8 *mac, struct station_info *sinfo) 515 { 516 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 517 struct ieee80211_local *local = sdata->local; 518 struct sta_info *sta; 519 int ret = -ENOENT; 520 521 mutex_lock(&local->sta_mtx); 522 523 sta = sta_info_get_by_idx(sdata, idx); 524 if (sta) { 525 ret = 0; 526 memcpy(mac, sta->sta.addr, ETH_ALEN); 527 sta_set_sinfo(sta, sinfo); 528 } 529 530 mutex_unlock(&local->sta_mtx); 531 532 return ret; 533 } 534 535 static int ieee80211_dump_survey(struct wiphy *wiphy, struct net_device *dev, 536 int idx, struct survey_info *survey) 537 { 538 struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr); 539 540 return drv_get_survey(local, idx, survey); 541 } 542 543 static int ieee80211_get_station(struct wiphy *wiphy, struct net_device *dev, 544 const u8 *mac, struct station_info *sinfo) 545 { 546 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 547 struct ieee80211_local *local = sdata->local; 548 struct sta_info *sta; 549 int ret = -ENOENT; 550 551 mutex_lock(&local->sta_mtx); 552 553 sta = sta_info_get_bss(sdata, mac); 554 if (sta) { 555 ret = 0; 556 sta_set_sinfo(sta, sinfo); 557 } 558 559 mutex_unlock(&local->sta_mtx); 560 561 return ret; 562 } 563 564 static int ieee80211_set_monitor_channel(struct wiphy *wiphy, 565 struct cfg80211_chan_def *chandef) 566 { 567 struct ieee80211_local *local = wiphy_priv(wiphy); 568 struct ieee80211_sub_if_data *sdata; 569 int ret = 0; 570 571 if (cfg80211_chandef_identical(&local->monitor_chandef, chandef)) 572 return 0; 573 574 mutex_lock(&local->mtx); 575 mutex_lock(&local->iflist_mtx); 576 if (local->use_chanctx) { 577 sdata = rcu_dereference_protected( 578 local->monitor_sdata, 579 lockdep_is_held(&local->iflist_mtx)); 580 if (sdata) { 581 ieee80211_vif_release_channel(sdata); 582 ret = ieee80211_vif_use_channel(sdata, chandef, 583 IEEE80211_CHANCTX_EXCLUSIVE); 584 } 585 } else if (local->open_count == local->monitors) { 586 local->_oper_chandef = *chandef; 587 ieee80211_hw_config(local, 0); 588 } 589 590 if (ret == 0) 591 local->monitor_chandef = *chandef; 592 mutex_unlock(&local->iflist_mtx); 593 mutex_unlock(&local->mtx); 594 595 return ret; 596 } 597 598 static int ieee80211_set_probe_resp(struct ieee80211_sub_if_data *sdata, 599 const u8 *resp, size_t resp_len, 600 const struct ieee80211_csa_settings *csa) 601 { 602 struct probe_resp *new, *old; 603 604 if (!resp || !resp_len) 605 return 1; 606 607 old = sdata_dereference(sdata->u.ap.probe_resp, sdata); 608 609 new = kzalloc(sizeof(struct probe_resp) + resp_len, GFP_KERNEL); 610 if (!new) 611 return -ENOMEM; 612 613 new->len = resp_len; 614 memcpy(new->data, resp, resp_len); 615 616 if (csa) 617 memcpy(new->csa_counter_offsets, csa->counter_offsets_presp, 618 csa->n_counter_offsets_presp * 619 sizeof(new->csa_counter_offsets[0])); 620 621 rcu_assign_pointer(sdata->u.ap.probe_resp, new); 622 if (old) 623 kfree_rcu(old, rcu_head); 624 625 return 0; 626 } 627 628 static int ieee80211_assign_beacon(struct ieee80211_sub_if_data *sdata, 629 struct cfg80211_beacon_data *params, 630 const struct ieee80211_csa_settings *csa) 631 { 632 struct beacon_data *new, *old; 633 int new_head_len, new_tail_len; 634 int size, err; 635 u32 changed = BSS_CHANGED_BEACON; 636 637 old = sdata_dereference(sdata->u.ap.beacon, sdata); 638 639 640 /* Need to have a beacon head if we don't have one yet */ 641 if (!params->head && !old) 642 return -EINVAL; 643 644 /* new or old head? */ 645 if (params->head) 646 new_head_len = params->head_len; 647 else 648 new_head_len = old->head_len; 649 650 /* new or old tail? */ 651 if (params->tail || !old) 652 /* params->tail_len will be zero for !params->tail */ 653 new_tail_len = params->tail_len; 654 else 655 new_tail_len = old->tail_len; 656 657 size = sizeof(*new) + new_head_len + new_tail_len; 658 659 new = kzalloc(size, GFP_KERNEL); 660 if (!new) 661 return -ENOMEM; 662 663 /* start filling the new info now */ 664 665 /* 666 * pointers go into the block we allocated, 667 * memory is | beacon_data | head | tail | 668 */ 669 new->head = ((u8 *) new) + sizeof(*new); 670 new->tail = new->head + new_head_len; 671 new->head_len = new_head_len; 672 new->tail_len = new_tail_len; 673 674 if (csa) { 675 new->csa_current_counter = csa->count; 676 memcpy(new->csa_counter_offsets, csa->counter_offsets_beacon, 677 csa->n_counter_offsets_beacon * 678 sizeof(new->csa_counter_offsets[0])); 679 } 680 681 /* copy in head */ 682 if (params->head) 683 memcpy(new->head, params->head, new_head_len); 684 else 685 memcpy(new->head, old->head, new_head_len); 686 687 /* copy in optional tail */ 688 if (params->tail) 689 memcpy(new->tail, params->tail, new_tail_len); 690 else 691 if (old) 692 memcpy(new->tail, old->tail, new_tail_len); 693 694 err = ieee80211_set_probe_resp(sdata, params->probe_resp, 695 params->probe_resp_len, csa); 696 if (err < 0) 697 return err; 698 if (err == 0) 699 changed |= BSS_CHANGED_AP_PROBE_RESP; 700 701 rcu_assign_pointer(sdata->u.ap.beacon, new); 702 703 if (old) 704 kfree_rcu(old, rcu_head); 705 706 return changed; 707 } 708 709 static int ieee80211_start_ap(struct wiphy *wiphy, struct net_device *dev, 710 struct cfg80211_ap_settings *params) 711 { 712 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 713 struct ieee80211_local *local = sdata->local; 714 struct beacon_data *old; 715 struct ieee80211_sub_if_data *vlan; 716 u32 changed = BSS_CHANGED_BEACON_INT | 717 BSS_CHANGED_BEACON_ENABLED | 718 BSS_CHANGED_BEACON | 719 BSS_CHANGED_SSID | 720 BSS_CHANGED_P2P_PS | 721 BSS_CHANGED_TXPOWER; 722 int err; 723 724 old = sdata_dereference(sdata->u.ap.beacon, sdata); 725 if (old) 726 return -EALREADY; 727 728 switch (params->smps_mode) { 729 case NL80211_SMPS_OFF: 730 sdata->smps_mode = IEEE80211_SMPS_OFF; 731 break; 732 case NL80211_SMPS_STATIC: 733 sdata->smps_mode = IEEE80211_SMPS_STATIC; 734 break; 735 case NL80211_SMPS_DYNAMIC: 736 sdata->smps_mode = IEEE80211_SMPS_DYNAMIC; 737 break; 738 default: 739 return -EINVAL; 740 } 741 sdata->needed_rx_chains = sdata->local->rx_chains; 742 743 mutex_lock(&local->mtx); 744 err = ieee80211_vif_use_channel(sdata, ¶ms->chandef, 745 IEEE80211_CHANCTX_SHARED); 746 if (!err) 747 ieee80211_vif_copy_chanctx_to_vlans(sdata, false); 748 mutex_unlock(&local->mtx); 749 if (err) 750 return err; 751 752 /* 753 * Apply control port protocol, this allows us to 754 * not encrypt dynamic WEP control frames. 755 */ 756 sdata->control_port_protocol = params->crypto.control_port_ethertype; 757 sdata->control_port_no_encrypt = params->crypto.control_port_no_encrypt; 758 sdata->encrypt_headroom = ieee80211_cs_headroom(sdata->local, 759 ¶ms->crypto, 760 sdata->vif.type); 761 762 list_for_each_entry(vlan, &sdata->u.ap.vlans, u.vlan.list) { 763 vlan->control_port_protocol = 764 params->crypto.control_port_ethertype; 765 vlan->control_port_no_encrypt = 766 params->crypto.control_port_no_encrypt; 767 vlan->encrypt_headroom = 768 ieee80211_cs_headroom(sdata->local, 769 ¶ms->crypto, 770 vlan->vif.type); 771 } 772 773 sdata->vif.bss_conf.beacon_int = params->beacon_interval; 774 sdata->vif.bss_conf.dtim_period = params->dtim_period; 775 sdata->vif.bss_conf.enable_beacon = true; 776 777 sdata->vif.bss_conf.ssid_len = params->ssid_len; 778 if (params->ssid_len) 779 memcpy(sdata->vif.bss_conf.ssid, params->ssid, 780 params->ssid_len); 781 sdata->vif.bss_conf.hidden_ssid = 782 (params->hidden_ssid != NL80211_HIDDEN_SSID_NOT_IN_USE); 783 784 memset(&sdata->vif.bss_conf.p2p_noa_attr, 0, 785 sizeof(sdata->vif.bss_conf.p2p_noa_attr)); 786 sdata->vif.bss_conf.p2p_noa_attr.oppps_ctwindow = 787 params->p2p_ctwindow & IEEE80211_P2P_OPPPS_CTWINDOW_MASK; 788 if (params->p2p_opp_ps) 789 sdata->vif.bss_conf.p2p_noa_attr.oppps_ctwindow |= 790 IEEE80211_P2P_OPPPS_ENABLE_BIT; 791 792 err = ieee80211_assign_beacon(sdata, ¶ms->beacon, NULL); 793 if (err < 0) { 794 ieee80211_vif_release_channel(sdata); 795 return err; 796 } 797 changed |= err; 798 799 err = drv_start_ap(sdata->local, sdata); 800 if (err) { 801 old = sdata_dereference(sdata->u.ap.beacon, sdata); 802 803 if (old) 804 kfree_rcu(old, rcu_head); 805 RCU_INIT_POINTER(sdata->u.ap.beacon, NULL); 806 ieee80211_vif_release_channel(sdata); 807 return err; 808 } 809 810 ieee80211_recalc_dtim(local, sdata); 811 ieee80211_bss_info_change_notify(sdata, changed); 812 813 netif_carrier_on(dev); 814 list_for_each_entry(vlan, &sdata->u.ap.vlans, u.vlan.list) 815 netif_carrier_on(vlan->dev); 816 817 return 0; 818 } 819 820 static int ieee80211_change_beacon(struct wiphy *wiphy, struct net_device *dev, 821 struct cfg80211_beacon_data *params) 822 { 823 struct ieee80211_sub_if_data *sdata; 824 struct beacon_data *old; 825 int err; 826 827 sdata = IEEE80211_DEV_TO_SUB_IF(dev); 828 sdata_assert_lock(sdata); 829 830 /* don't allow changing the beacon while CSA is in place - offset 831 * of channel switch counter may change 832 */ 833 if (sdata->vif.csa_active) 834 return -EBUSY; 835 836 old = sdata_dereference(sdata->u.ap.beacon, sdata); 837 if (!old) 838 return -ENOENT; 839 840 err = ieee80211_assign_beacon(sdata, params, NULL); 841 if (err < 0) 842 return err; 843 ieee80211_bss_info_change_notify(sdata, err); 844 return 0; 845 } 846 847 static int ieee80211_stop_ap(struct wiphy *wiphy, struct net_device *dev) 848 { 849 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 850 struct ieee80211_sub_if_data *vlan; 851 struct ieee80211_local *local = sdata->local; 852 struct beacon_data *old_beacon; 853 struct probe_resp *old_probe_resp; 854 struct cfg80211_chan_def chandef; 855 856 sdata_assert_lock(sdata); 857 858 old_beacon = sdata_dereference(sdata->u.ap.beacon, sdata); 859 if (!old_beacon) 860 return -ENOENT; 861 old_probe_resp = sdata_dereference(sdata->u.ap.probe_resp, sdata); 862 863 /* abort any running channel switch */ 864 mutex_lock(&local->mtx); 865 sdata->vif.csa_active = false; 866 if (sdata->csa_block_tx) { 867 ieee80211_wake_vif_queues(local, sdata, 868 IEEE80211_QUEUE_STOP_REASON_CSA); 869 sdata->csa_block_tx = false; 870 } 871 872 mutex_unlock(&local->mtx); 873 874 kfree(sdata->u.ap.next_beacon); 875 sdata->u.ap.next_beacon = NULL; 876 877 /* turn off carrier for this interface and dependent VLANs */ 878 list_for_each_entry(vlan, &sdata->u.ap.vlans, u.vlan.list) 879 netif_carrier_off(vlan->dev); 880 netif_carrier_off(dev); 881 882 /* remove beacon and probe response */ 883 RCU_INIT_POINTER(sdata->u.ap.beacon, NULL); 884 RCU_INIT_POINTER(sdata->u.ap.probe_resp, NULL); 885 kfree_rcu(old_beacon, rcu_head); 886 if (old_probe_resp) 887 kfree_rcu(old_probe_resp, rcu_head); 888 sdata->u.ap.driver_smps_mode = IEEE80211_SMPS_OFF; 889 890 __sta_info_flush(sdata, true); 891 ieee80211_free_keys(sdata, true); 892 893 sdata->vif.bss_conf.enable_beacon = false; 894 sdata->vif.bss_conf.ssid_len = 0; 895 clear_bit(SDATA_STATE_OFFCHANNEL_BEACON_STOPPED, &sdata->state); 896 ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_BEACON_ENABLED); 897 898 if (sdata->wdev.cac_started) { 899 chandef = sdata->vif.bss_conf.chandef; 900 cancel_delayed_work_sync(&sdata->dfs_cac_timer_work); 901 cfg80211_cac_event(sdata->dev, &chandef, 902 NL80211_RADAR_CAC_ABORTED, 903 GFP_KERNEL); 904 } 905 906 drv_stop_ap(sdata->local, sdata); 907 908 /* free all potentially still buffered bcast frames */ 909 local->total_ps_buffered -= skb_queue_len(&sdata->u.ap.ps.bc_buf); 910 skb_queue_purge(&sdata->u.ap.ps.bc_buf); 911 912 mutex_lock(&local->mtx); 913 ieee80211_vif_copy_chanctx_to_vlans(sdata, true); 914 ieee80211_vif_release_channel(sdata); 915 mutex_unlock(&local->mtx); 916 917 return 0; 918 } 919 920 /* Layer 2 Update frame (802.2 Type 1 LLC XID Update response) */ 921 struct iapp_layer2_update { 922 u8 da[ETH_ALEN]; /* broadcast */ 923 u8 sa[ETH_ALEN]; /* STA addr */ 924 __be16 len; /* 6 */ 925 u8 dsap; /* 0 */ 926 u8 ssap; /* 0 */ 927 u8 control; 928 u8 xid_info[3]; 929 } __packed; 930 931 static void ieee80211_send_layer2_update(struct sta_info *sta) 932 { 933 struct iapp_layer2_update *msg; 934 struct sk_buff *skb; 935 936 /* Send Level 2 Update Frame to update forwarding tables in layer 2 937 * bridge devices */ 938 939 skb = dev_alloc_skb(sizeof(*msg)); 940 if (!skb) 941 return; 942 msg = (struct iapp_layer2_update *)skb_put(skb, sizeof(*msg)); 943 944 /* 802.2 Type 1 Logical Link Control (LLC) Exchange Identifier (XID) 945 * Update response frame; IEEE Std 802.2-1998, 5.4.1.2.1 */ 946 947 eth_broadcast_addr(msg->da); 948 memcpy(msg->sa, sta->sta.addr, ETH_ALEN); 949 msg->len = htons(6); 950 msg->dsap = 0; 951 msg->ssap = 0x01; /* NULL LSAP, CR Bit: Response */ 952 msg->control = 0xaf; /* XID response lsb.1111F101. 953 * F=0 (no poll command; unsolicited frame) */ 954 msg->xid_info[0] = 0x81; /* XID format identifier */ 955 msg->xid_info[1] = 1; /* LLC types/classes: Type 1 LLC */ 956 msg->xid_info[2] = 0; /* XID sender's receive window size (RW) */ 957 958 skb->dev = sta->sdata->dev; 959 skb->protocol = eth_type_trans(skb, sta->sdata->dev); 960 memset(skb->cb, 0, sizeof(skb->cb)); 961 netif_rx_ni(skb); 962 } 963 964 static int sta_apply_auth_flags(struct ieee80211_local *local, 965 struct sta_info *sta, 966 u32 mask, u32 set) 967 { 968 int ret; 969 970 if (mask & BIT(NL80211_STA_FLAG_AUTHENTICATED) && 971 set & BIT(NL80211_STA_FLAG_AUTHENTICATED) && 972 !test_sta_flag(sta, WLAN_STA_AUTH)) { 973 ret = sta_info_move_state(sta, IEEE80211_STA_AUTH); 974 if (ret) 975 return ret; 976 } 977 978 if (mask & BIT(NL80211_STA_FLAG_ASSOCIATED) && 979 set & BIT(NL80211_STA_FLAG_ASSOCIATED) && 980 !test_sta_flag(sta, WLAN_STA_ASSOC)) { 981 /* 982 * When peer becomes associated, init rate control as 983 * well. Some drivers require rate control initialized 984 * before drv_sta_state() is called. 985 */ 986 if (test_sta_flag(sta, WLAN_STA_TDLS_PEER)) 987 rate_control_rate_init(sta); 988 989 ret = sta_info_move_state(sta, IEEE80211_STA_ASSOC); 990 if (ret) 991 return ret; 992 } 993 994 if (mask & BIT(NL80211_STA_FLAG_AUTHORIZED)) { 995 if (set & BIT(NL80211_STA_FLAG_AUTHORIZED)) 996 ret = sta_info_move_state(sta, IEEE80211_STA_AUTHORIZED); 997 else if (test_sta_flag(sta, WLAN_STA_AUTHORIZED)) 998 ret = sta_info_move_state(sta, IEEE80211_STA_ASSOC); 999 else 1000 ret = 0; 1001 if (ret) 1002 return ret; 1003 } 1004 1005 if (mask & BIT(NL80211_STA_FLAG_ASSOCIATED) && 1006 !(set & BIT(NL80211_STA_FLAG_ASSOCIATED)) && 1007 test_sta_flag(sta, WLAN_STA_ASSOC)) { 1008 ret = sta_info_move_state(sta, IEEE80211_STA_AUTH); 1009 if (ret) 1010 return ret; 1011 } 1012 1013 if (mask & BIT(NL80211_STA_FLAG_AUTHENTICATED) && 1014 !(set & BIT(NL80211_STA_FLAG_AUTHENTICATED)) && 1015 test_sta_flag(sta, WLAN_STA_AUTH)) { 1016 ret = sta_info_move_state(sta, IEEE80211_STA_NONE); 1017 if (ret) 1018 return ret; 1019 } 1020 1021 return 0; 1022 } 1023 1024 static int sta_apply_parameters(struct ieee80211_local *local, 1025 struct sta_info *sta, 1026 struct station_parameters *params) 1027 { 1028 int ret = 0; 1029 struct ieee80211_supported_band *sband; 1030 struct ieee80211_sub_if_data *sdata = sta->sdata; 1031 enum ieee80211_band band = ieee80211_get_sdata_band(sdata); 1032 u32 mask, set; 1033 1034 sband = local->hw.wiphy->bands[band]; 1035 1036 mask = params->sta_flags_mask; 1037 set = params->sta_flags_set; 1038 1039 if (ieee80211_vif_is_mesh(&sdata->vif)) { 1040 /* 1041 * In mesh mode, ASSOCIATED isn't part of the nl80211 1042 * API but must follow AUTHENTICATED for driver state. 1043 */ 1044 if (mask & BIT(NL80211_STA_FLAG_AUTHENTICATED)) 1045 mask |= BIT(NL80211_STA_FLAG_ASSOCIATED); 1046 if (set & BIT(NL80211_STA_FLAG_AUTHENTICATED)) 1047 set |= BIT(NL80211_STA_FLAG_ASSOCIATED); 1048 } else if (test_sta_flag(sta, WLAN_STA_TDLS_PEER)) { 1049 /* 1050 * TDLS -- everything follows authorized, but 1051 * only becoming authorized is possible, not 1052 * going back 1053 */ 1054 if (set & BIT(NL80211_STA_FLAG_AUTHORIZED)) { 1055 set |= BIT(NL80211_STA_FLAG_AUTHENTICATED) | 1056 BIT(NL80211_STA_FLAG_ASSOCIATED); 1057 mask |= BIT(NL80211_STA_FLAG_AUTHENTICATED) | 1058 BIT(NL80211_STA_FLAG_ASSOCIATED); 1059 } 1060 } 1061 1062 if (mask & BIT(NL80211_STA_FLAG_WME) && 1063 local->hw.queues >= IEEE80211_NUM_ACS) 1064 sta->sta.wme = set & BIT(NL80211_STA_FLAG_WME); 1065 1066 /* auth flags will be set later for TDLS stations */ 1067 if (!test_sta_flag(sta, WLAN_STA_TDLS_PEER)) { 1068 ret = sta_apply_auth_flags(local, sta, mask, set); 1069 if (ret) 1070 return ret; 1071 } 1072 1073 if (mask & BIT(NL80211_STA_FLAG_SHORT_PREAMBLE)) { 1074 if (set & BIT(NL80211_STA_FLAG_SHORT_PREAMBLE)) 1075 set_sta_flag(sta, WLAN_STA_SHORT_PREAMBLE); 1076 else 1077 clear_sta_flag(sta, WLAN_STA_SHORT_PREAMBLE); 1078 } 1079 1080 if (mask & BIT(NL80211_STA_FLAG_MFP)) { 1081 sta->sta.mfp = !!(set & BIT(NL80211_STA_FLAG_MFP)); 1082 if (set & BIT(NL80211_STA_FLAG_MFP)) 1083 set_sta_flag(sta, WLAN_STA_MFP); 1084 else 1085 clear_sta_flag(sta, WLAN_STA_MFP); 1086 } 1087 1088 if (mask & BIT(NL80211_STA_FLAG_TDLS_PEER)) { 1089 if (set & BIT(NL80211_STA_FLAG_TDLS_PEER)) 1090 set_sta_flag(sta, WLAN_STA_TDLS_PEER); 1091 else 1092 clear_sta_flag(sta, WLAN_STA_TDLS_PEER); 1093 } 1094 1095 /* mark TDLS channel switch support, if the AP allows it */ 1096 if (test_sta_flag(sta, WLAN_STA_TDLS_PEER) && 1097 !sdata->u.mgd.tdls_chan_switch_prohibited && 1098 params->ext_capab_len >= 4 && 1099 params->ext_capab[3] & WLAN_EXT_CAPA4_TDLS_CHAN_SWITCH) 1100 set_sta_flag(sta, WLAN_STA_TDLS_CHAN_SWITCH); 1101 1102 if (params->sta_modify_mask & STATION_PARAM_APPLY_UAPSD) { 1103 sta->sta.uapsd_queues = params->uapsd_queues; 1104 sta->sta.max_sp = params->max_sp; 1105 } 1106 1107 /* 1108 * cfg80211 validates this (1-2007) and allows setting the AID 1109 * only when creating a new station entry 1110 */ 1111 if (params->aid) 1112 sta->sta.aid = params->aid; 1113 1114 /* 1115 * Some of the following updates would be racy if called on an 1116 * existing station, via ieee80211_change_station(). However, 1117 * all such changes are rejected by cfg80211 except for updates 1118 * changing the supported rates on an existing but not yet used 1119 * TDLS peer. 1120 */ 1121 1122 if (params->listen_interval >= 0) 1123 sta->listen_interval = params->listen_interval; 1124 1125 if (params->supported_rates) { 1126 ieee80211_parse_bitrates(&sdata->vif.bss_conf.chandef, 1127 sband, params->supported_rates, 1128 params->supported_rates_len, 1129 &sta->sta.supp_rates[band]); 1130 } 1131 1132 if (params->ht_capa) 1133 ieee80211_ht_cap_ie_to_sta_ht_cap(sdata, sband, 1134 params->ht_capa, sta); 1135 1136 if (params->vht_capa) 1137 ieee80211_vht_cap_ie_to_sta_vht_cap(sdata, sband, 1138 params->vht_capa, sta); 1139 1140 if (params->opmode_notif_used) { 1141 /* returned value is only needed for rc update, but the 1142 * rc isn't initialized here yet, so ignore it 1143 */ 1144 __ieee80211_vht_handle_opmode(sdata, sta, 1145 params->opmode_notif, 1146 band, false); 1147 } 1148 1149 if (ieee80211_vif_is_mesh(&sdata->vif)) { 1150 #ifdef CONFIG_MAC80211_MESH 1151 u32 changed = 0; 1152 1153 if (params->sta_modify_mask & STATION_PARAM_APPLY_PLINK_STATE) { 1154 switch (params->plink_state) { 1155 case NL80211_PLINK_ESTAB: 1156 if (sta->plink_state != NL80211_PLINK_ESTAB) 1157 changed = mesh_plink_inc_estab_count( 1158 sdata); 1159 sta->plink_state = params->plink_state; 1160 1161 ieee80211_mps_sta_status_update(sta); 1162 changed |= ieee80211_mps_set_sta_local_pm(sta, 1163 sdata->u.mesh.mshcfg.power_mode); 1164 break; 1165 case NL80211_PLINK_LISTEN: 1166 case NL80211_PLINK_BLOCKED: 1167 case NL80211_PLINK_OPN_SNT: 1168 case NL80211_PLINK_OPN_RCVD: 1169 case NL80211_PLINK_CNF_RCVD: 1170 case NL80211_PLINK_HOLDING: 1171 if (sta->plink_state == NL80211_PLINK_ESTAB) 1172 changed = mesh_plink_dec_estab_count( 1173 sdata); 1174 sta->plink_state = params->plink_state; 1175 1176 ieee80211_mps_sta_status_update(sta); 1177 changed |= ieee80211_mps_set_sta_local_pm(sta, 1178 NL80211_MESH_POWER_UNKNOWN); 1179 break; 1180 default: 1181 /* nothing */ 1182 break; 1183 } 1184 } 1185 1186 switch (params->plink_action) { 1187 case NL80211_PLINK_ACTION_NO_ACTION: 1188 /* nothing */ 1189 break; 1190 case NL80211_PLINK_ACTION_OPEN: 1191 changed |= mesh_plink_open(sta); 1192 break; 1193 case NL80211_PLINK_ACTION_BLOCK: 1194 changed |= mesh_plink_block(sta); 1195 break; 1196 } 1197 1198 if (params->local_pm) 1199 changed |= 1200 ieee80211_mps_set_sta_local_pm(sta, 1201 params->local_pm); 1202 ieee80211_mbss_info_change_notify(sdata, changed); 1203 #endif 1204 } 1205 1206 /* set the STA state after all sta info from usermode has been set */ 1207 if (test_sta_flag(sta, WLAN_STA_TDLS_PEER)) { 1208 ret = sta_apply_auth_flags(local, sta, mask, set); 1209 if (ret) 1210 return ret; 1211 } 1212 1213 return 0; 1214 } 1215 1216 static int ieee80211_add_station(struct wiphy *wiphy, struct net_device *dev, 1217 const u8 *mac, 1218 struct station_parameters *params) 1219 { 1220 struct ieee80211_local *local = wiphy_priv(wiphy); 1221 struct sta_info *sta; 1222 struct ieee80211_sub_if_data *sdata; 1223 int err; 1224 int layer2_update; 1225 1226 if (params->vlan) { 1227 sdata = IEEE80211_DEV_TO_SUB_IF(params->vlan); 1228 1229 if (sdata->vif.type != NL80211_IFTYPE_AP_VLAN && 1230 sdata->vif.type != NL80211_IFTYPE_AP) 1231 return -EINVAL; 1232 } else 1233 sdata = IEEE80211_DEV_TO_SUB_IF(dev); 1234 1235 if (ether_addr_equal(mac, sdata->vif.addr)) 1236 return -EINVAL; 1237 1238 if (is_multicast_ether_addr(mac)) 1239 return -EINVAL; 1240 1241 sta = sta_info_alloc(sdata, mac, GFP_KERNEL); 1242 if (!sta) 1243 return -ENOMEM; 1244 1245 /* 1246 * defaults -- if userspace wants something else we'll 1247 * change it accordingly in sta_apply_parameters() 1248 */ 1249 if (!(params->sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER))) { 1250 sta_info_pre_move_state(sta, IEEE80211_STA_AUTH); 1251 sta_info_pre_move_state(sta, IEEE80211_STA_ASSOC); 1252 } else { 1253 sta->sta.tdls = true; 1254 } 1255 1256 err = sta_apply_parameters(local, sta, params); 1257 if (err) { 1258 sta_info_free(local, sta); 1259 return err; 1260 } 1261 1262 /* 1263 * for TDLS, rate control should be initialized only when 1264 * rates are known and station is marked authorized 1265 */ 1266 if (!test_sta_flag(sta, WLAN_STA_TDLS_PEER)) 1267 rate_control_rate_init(sta); 1268 1269 layer2_update = sdata->vif.type == NL80211_IFTYPE_AP_VLAN || 1270 sdata->vif.type == NL80211_IFTYPE_AP; 1271 1272 err = sta_info_insert_rcu(sta); 1273 if (err) { 1274 rcu_read_unlock(); 1275 return err; 1276 } 1277 1278 if (layer2_update) 1279 ieee80211_send_layer2_update(sta); 1280 1281 rcu_read_unlock(); 1282 1283 return 0; 1284 } 1285 1286 static int ieee80211_del_station(struct wiphy *wiphy, struct net_device *dev, 1287 struct station_del_parameters *params) 1288 { 1289 struct ieee80211_sub_if_data *sdata; 1290 1291 sdata = IEEE80211_DEV_TO_SUB_IF(dev); 1292 1293 if (params->mac) 1294 return sta_info_destroy_addr_bss(sdata, params->mac); 1295 1296 sta_info_flush(sdata); 1297 return 0; 1298 } 1299 1300 static int ieee80211_change_station(struct wiphy *wiphy, 1301 struct net_device *dev, const u8 *mac, 1302 struct station_parameters *params) 1303 { 1304 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 1305 struct ieee80211_local *local = wiphy_priv(wiphy); 1306 struct sta_info *sta; 1307 struct ieee80211_sub_if_data *vlansdata; 1308 enum cfg80211_station_type statype; 1309 int err; 1310 1311 mutex_lock(&local->sta_mtx); 1312 1313 sta = sta_info_get_bss(sdata, mac); 1314 if (!sta) { 1315 err = -ENOENT; 1316 goto out_err; 1317 } 1318 1319 switch (sdata->vif.type) { 1320 case NL80211_IFTYPE_MESH_POINT: 1321 if (sdata->u.mesh.user_mpm) 1322 statype = CFG80211_STA_MESH_PEER_USER; 1323 else 1324 statype = CFG80211_STA_MESH_PEER_KERNEL; 1325 break; 1326 case NL80211_IFTYPE_ADHOC: 1327 statype = CFG80211_STA_IBSS; 1328 break; 1329 case NL80211_IFTYPE_STATION: 1330 if (!test_sta_flag(sta, WLAN_STA_TDLS_PEER)) { 1331 statype = CFG80211_STA_AP_STA; 1332 break; 1333 } 1334 if (test_sta_flag(sta, WLAN_STA_AUTHORIZED)) 1335 statype = CFG80211_STA_TDLS_PEER_ACTIVE; 1336 else 1337 statype = CFG80211_STA_TDLS_PEER_SETUP; 1338 break; 1339 case NL80211_IFTYPE_AP: 1340 case NL80211_IFTYPE_AP_VLAN: 1341 statype = CFG80211_STA_AP_CLIENT; 1342 break; 1343 default: 1344 err = -EOPNOTSUPP; 1345 goto out_err; 1346 } 1347 1348 err = cfg80211_check_station_change(wiphy, params, statype); 1349 if (err) 1350 goto out_err; 1351 1352 if (params->vlan && params->vlan != sta->sdata->dev) { 1353 bool prev_4addr = false; 1354 bool new_4addr = false; 1355 1356 vlansdata = IEEE80211_DEV_TO_SUB_IF(params->vlan); 1357 1358 if (params->vlan->ieee80211_ptr->use_4addr) { 1359 if (vlansdata->u.vlan.sta) { 1360 err = -EBUSY; 1361 goto out_err; 1362 } 1363 1364 rcu_assign_pointer(vlansdata->u.vlan.sta, sta); 1365 new_4addr = true; 1366 } 1367 1368 if (sta->sdata->vif.type == NL80211_IFTYPE_AP_VLAN && 1369 sta->sdata->u.vlan.sta) { 1370 RCU_INIT_POINTER(sta->sdata->u.vlan.sta, NULL); 1371 prev_4addr = true; 1372 } 1373 1374 sta->sdata = vlansdata; 1375 1376 if (sta->sta_state == IEEE80211_STA_AUTHORIZED && 1377 prev_4addr != new_4addr) { 1378 if (new_4addr) 1379 atomic_dec(&sta->sdata->bss->num_mcast_sta); 1380 else 1381 atomic_inc(&sta->sdata->bss->num_mcast_sta); 1382 } 1383 1384 ieee80211_send_layer2_update(sta); 1385 } 1386 1387 err = sta_apply_parameters(local, sta, params); 1388 if (err) 1389 goto out_err; 1390 1391 mutex_unlock(&local->sta_mtx); 1392 1393 if ((sdata->vif.type == NL80211_IFTYPE_AP || 1394 sdata->vif.type == NL80211_IFTYPE_AP_VLAN) && 1395 sta->known_smps_mode != sta->sdata->bss->req_smps && 1396 test_sta_flag(sta, WLAN_STA_AUTHORIZED) && 1397 sta_info_tx_streams(sta) != 1) { 1398 ht_dbg(sta->sdata, 1399 "%pM just authorized and MIMO capable - update SMPS\n", 1400 sta->sta.addr); 1401 ieee80211_send_smps_action(sta->sdata, 1402 sta->sdata->bss->req_smps, 1403 sta->sta.addr, 1404 sta->sdata->vif.bss_conf.bssid); 1405 } 1406 1407 if (sdata->vif.type == NL80211_IFTYPE_STATION && 1408 params->sta_flags_mask & BIT(NL80211_STA_FLAG_AUTHORIZED)) { 1409 ieee80211_recalc_ps(local, -1); 1410 ieee80211_recalc_ps_vif(sdata); 1411 } 1412 1413 return 0; 1414 out_err: 1415 mutex_unlock(&local->sta_mtx); 1416 return err; 1417 } 1418 1419 #ifdef CONFIG_MAC80211_MESH 1420 static int ieee80211_add_mpath(struct wiphy *wiphy, struct net_device *dev, 1421 const u8 *dst, const u8 *next_hop) 1422 { 1423 struct ieee80211_sub_if_data *sdata; 1424 struct mesh_path *mpath; 1425 struct sta_info *sta; 1426 1427 sdata = IEEE80211_DEV_TO_SUB_IF(dev); 1428 1429 rcu_read_lock(); 1430 sta = sta_info_get(sdata, next_hop); 1431 if (!sta) { 1432 rcu_read_unlock(); 1433 return -ENOENT; 1434 } 1435 1436 mpath = mesh_path_add(sdata, dst); 1437 if (IS_ERR(mpath)) { 1438 rcu_read_unlock(); 1439 return PTR_ERR(mpath); 1440 } 1441 1442 mesh_path_fix_nexthop(mpath, sta); 1443 1444 rcu_read_unlock(); 1445 return 0; 1446 } 1447 1448 static int ieee80211_del_mpath(struct wiphy *wiphy, struct net_device *dev, 1449 const u8 *dst) 1450 { 1451 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 1452 1453 if (dst) 1454 return mesh_path_del(sdata, dst); 1455 1456 mesh_path_flush_by_iface(sdata); 1457 return 0; 1458 } 1459 1460 static int ieee80211_change_mpath(struct wiphy *wiphy, struct net_device *dev, 1461 const u8 *dst, const u8 *next_hop) 1462 { 1463 struct ieee80211_sub_if_data *sdata; 1464 struct mesh_path *mpath; 1465 struct sta_info *sta; 1466 1467 sdata = IEEE80211_DEV_TO_SUB_IF(dev); 1468 1469 rcu_read_lock(); 1470 1471 sta = sta_info_get(sdata, next_hop); 1472 if (!sta) { 1473 rcu_read_unlock(); 1474 return -ENOENT; 1475 } 1476 1477 mpath = mesh_path_lookup(sdata, dst); 1478 if (!mpath) { 1479 rcu_read_unlock(); 1480 return -ENOENT; 1481 } 1482 1483 mesh_path_fix_nexthop(mpath, sta); 1484 1485 rcu_read_unlock(); 1486 return 0; 1487 } 1488 1489 static void mpath_set_pinfo(struct mesh_path *mpath, u8 *next_hop, 1490 struct mpath_info *pinfo) 1491 { 1492 struct sta_info *next_hop_sta = rcu_dereference(mpath->next_hop); 1493 1494 if (next_hop_sta) 1495 memcpy(next_hop, next_hop_sta->sta.addr, ETH_ALEN); 1496 else 1497 eth_zero_addr(next_hop); 1498 1499 memset(pinfo, 0, sizeof(*pinfo)); 1500 1501 pinfo->generation = mesh_paths_generation; 1502 1503 pinfo->filled = MPATH_INFO_FRAME_QLEN | 1504 MPATH_INFO_SN | 1505 MPATH_INFO_METRIC | 1506 MPATH_INFO_EXPTIME | 1507 MPATH_INFO_DISCOVERY_TIMEOUT | 1508 MPATH_INFO_DISCOVERY_RETRIES | 1509 MPATH_INFO_FLAGS; 1510 1511 pinfo->frame_qlen = mpath->frame_queue.qlen; 1512 pinfo->sn = mpath->sn; 1513 pinfo->metric = mpath->metric; 1514 if (time_before(jiffies, mpath->exp_time)) 1515 pinfo->exptime = jiffies_to_msecs(mpath->exp_time - jiffies); 1516 pinfo->discovery_timeout = 1517 jiffies_to_msecs(mpath->discovery_timeout); 1518 pinfo->discovery_retries = mpath->discovery_retries; 1519 if (mpath->flags & MESH_PATH_ACTIVE) 1520 pinfo->flags |= NL80211_MPATH_FLAG_ACTIVE; 1521 if (mpath->flags & MESH_PATH_RESOLVING) 1522 pinfo->flags |= NL80211_MPATH_FLAG_RESOLVING; 1523 if (mpath->flags & MESH_PATH_SN_VALID) 1524 pinfo->flags |= NL80211_MPATH_FLAG_SN_VALID; 1525 if (mpath->flags & MESH_PATH_FIXED) 1526 pinfo->flags |= NL80211_MPATH_FLAG_FIXED; 1527 if (mpath->flags & MESH_PATH_RESOLVED) 1528 pinfo->flags |= NL80211_MPATH_FLAG_RESOLVED; 1529 } 1530 1531 static int ieee80211_get_mpath(struct wiphy *wiphy, struct net_device *dev, 1532 u8 *dst, u8 *next_hop, struct mpath_info *pinfo) 1533 1534 { 1535 struct ieee80211_sub_if_data *sdata; 1536 struct mesh_path *mpath; 1537 1538 sdata = IEEE80211_DEV_TO_SUB_IF(dev); 1539 1540 rcu_read_lock(); 1541 mpath = mesh_path_lookup(sdata, dst); 1542 if (!mpath) { 1543 rcu_read_unlock(); 1544 return -ENOENT; 1545 } 1546 memcpy(dst, mpath->dst, ETH_ALEN); 1547 mpath_set_pinfo(mpath, next_hop, pinfo); 1548 rcu_read_unlock(); 1549 return 0; 1550 } 1551 1552 static int ieee80211_dump_mpath(struct wiphy *wiphy, struct net_device *dev, 1553 int idx, u8 *dst, u8 *next_hop, 1554 struct mpath_info *pinfo) 1555 { 1556 struct ieee80211_sub_if_data *sdata; 1557 struct mesh_path *mpath; 1558 1559 sdata = IEEE80211_DEV_TO_SUB_IF(dev); 1560 1561 rcu_read_lock(); 1562 mpath = mesh_path_lookup_by_idx(sdata, idx); 1563 if (!mpath) { 1564 rcu_read_unlock(); 1565 return -ENOENT; 1566 } 1567 memcpy(dst, mpath->dst, ETH_ALEN); 1568 mpath_set_pinfo(mpath, next_hop, pinfo); 1569 rcu_read_unlock(); 1570 return 0; 1571 } 1572 1573 static void mpp_set_pinfo(struct mesh_path *mpath, u8 *mpp, 1574 struct mpath_info *pinfo) 1575 { 1576 memset(pinfo, 0, sizeof(*pinfo)); 1577 memcpy(mpp, mpath->mpp, ETH_ALEN); 1578 1579 pinfo->generation = mpp_paths_generation; 1580 } 1581 1582 static int ieee80211_get_mpp(struct wiphy *wiphy, struct net_device *dev, 1583 u8 *dst, u8 *mpp, struct mpath_info *pinfo) 1584 1585 { 1586 struct ieee80211_sub_if_data *sdata; 1587 struct mesh_path *mpath; 1588 1589 sdata = IEEE80211_DEV_TO_SUB_IF(dev); 1590 1591 rcu_read_lock(); 1592 mpath = mpp_path_lookup(sdata, dst); 1593 if (!mpath) { 1594 rcu_read_unlock(); 1595 return -ENOENT; 1596 } 1597 memcpy(dst, mpath->dst, ETH_ALEN); 1598 mpp_set_pinfo(mpath, mpp, pinfo); 1599 rcu_read_unlock(); 1600 return 0; 1601 } 1602 1603 static int ieee80211_dump_mpp(struct wiphy *wiphy, struct net_device *dev, 1604 int idx, u8 *dst, u8 *mpp, 1605 struct mpath_info *pinfo) 1606 { 1607 struct ieee80211_sub_if_data *sdata; 1608 struct mesh_path *mpath; 1609 1610 sdata = IEEE80211_DEV_TO_SUB_IF(dev); 1611 1612 rcu_read_lock(); 1613 mpath = mpp_path_lookup_by_idx(sdata, idx); 1614 if (!mpath) { 1615 rcu_read_unlock(); 1616 return -ENOENT; 1617 } 1618 memcpy(dst, mpath->dst, ETH_ALEN); 1619 mpp_set_pinfo(mpath, mpp, pinfo); 1620 rcu_read_unlock(); 1621 return 0; 1622 } 1623 1624 static int ieee80211_get_mesh_config(struct wiphy *wiphy, 1625 struct net_device *dev, 1626 struct mesh_config *conf) 1627 { 1628 struct ieee80211_sub_if_data *sdata; 1629 sdata = IEEE80211_DEV_TO_SUB_IF(dev); 1630 1631 memcpy(conf, &(sdata->u.mesh.mshcfg), sizeof(struct mesh_config)); 1632 return 0; 1633 } 1634 1635 static inline bool _chg_mesh_attr(enum nl80211_meshconf_params parm, u32 mask) 1636 { 1637 return (mask >> (parm-1)) & 0x1; 1638 } 1639 1640 static int copy_mesh_setup(struct ieee80211_if_mesh *ifmsh, 1641 const struct mesh_setup *setup) 1642 { 1643 u8 *new_ie; 1644 const u8 *old_ie; 1645 struct ieee80211_sub_if_data *sdata = container_of(ifmsh, 1646 struct ieee80211_sub_if_data, u.mesh); 1647 1648 /* allocate information elements */ 1649 new_ie = NULL; 1650 old_ie = ifmsh->ie; 1651 1652 if (setup->ie_len) { 1653 new_ie = kmemdup(setup->ie, setup->ie_len, 1654 GFP_KERNEL); 1655 if (!new_ie) 1656 return -ENOMEM; 1657 } 1658 ifmsh->ie_len = setup->ie_len; 1659 ifmsh->ie = new_ie; 1660 kfree(old_ie); 1661 1662 /* now copy the rest of the setup parameters */ 1663 ifmsh->mesh_id_len = setup->mesh_id_len; 1664 memcpy(ifmsh->mesh_id, setup->mesh_id, ifmsh->mesh_id_len); 1665 ifmsh->mesh_sp_id = setup->sync_method; 1666 ifmsh->mesh_pp_id = setup->path_sel_proto; 1667 ifmsh->mesh_pm_id = setup->path_metric; 1668 ifmsh->user_mpm = setup->user_mpm; 1669 ifmsh->mesh_auth_id = setup->auth_id; 1670 ifmsh->security = IEEE80211_MESH_SEC_NONE; 1671 if (setup->is_authenticated) 1672 ifmsh->security |= IEEE80211_MESH_SEC_AUTHED; 1673 if (setup->is_secure) 1674 ifmsh->security |= IEEE80211_MESH_SEC_SECURED; 1675 1676 /* mcast rate setting in Mesh Node */ 1677 memcpy(sdata->vif.bss_conf.mcast_rate, setup->mcast_rate, 1678 sizeof(setup->mcast_rate)); 1679 sdata->vif.bss_conf.basic_rates = setup->basic_rates; 1680 1681 sdata->vif.bss_conf.beacon_int = setup->beacon_interval; 1682 sdata->vif.bss_conf.dtim_period = setup->dtim_period; 1683 1684 return 0; 1685 } 1686 1687 static int ieee80211_update_mesh_config(struct wiphy *wiphy, 1688 struct net_device *dev, u32 mask, 1689 const struct mesh_config *nconf) 1690 { 1691 struct mesh_config *conf; 1692 struct ieee80211_sub_if_data *sdata; 1693 struct ieee80211_if_mesh *ifmsh; 1694 1695 sdata = IEEE80211_DEV_TO_SUB_IF(dev); 1696 ifmsh = &sdata->u.mesh; 1697 1698 /* Set the config options which we are interested in setting */ 1699 conf = &(sdata->u.mesh.mshcfg); 1700 if (_chg_mesh_attr(NL80211_MESHCONF_RETRY_TIMEOUT, mask)) 1701 conf->dot11MeshRetryTimeout = nconf->dot11MeshRetryTimeout; 1702 if (_chg_mesh_attr(NL80211_MESHCONF_CONFIRM_TIMEOUT, mask)) 1703 conf->dot11MeshConfirmTimeout = nconf->dot11MeshConfirmTimeout; 1704 if (_chg_mesh_attr(NL80211_MESHCONF_HOLDING_TIMEOUT, mask)) 1705 conf->dot11MeshHoldingTimeout = nconf->dot11MeshHoldingTimeout; 1706 if (_chg_mesh_attr(NL80211_MESHCONF_MAX_PEER_LINKS, mask)) 1707 conf->dot11MeshMaxPeerLinks = nconf->dot11MeshMaxPeerLinks; 1708 if (_chg_mesh_attr(NL80211_MESHCONF_MAX_RETRIES, mask)) 1709 conf->dot11MeshMaxRetries = nconf->dot11MeshMaxRetries; 1710 if (_chg_mesh_attr(NL80211_MESHCONF_TTL, mask)) 1711 conf->dot11MeshTTL = nconf->dot11MeshTTL; 1712 if (_chg_mesh_attr(NL80211_MESHCONF_ELEMENT_TTL, mask)) 1713 conf->element_ttl = nconf->element_ttl; 1714 if (_chg_mesh_attr(NL80211_MESHCONF_AUTO_OPEN_PLINKS, mask)) { 1715 if (ifmsh->user_mpm) 1716 return -EBUSY; 1717 conf->auto_open_plinks = nconf->auto_open_plinks; 1718 } 1719 if (_chg_mesh_attr(NL80211_MESHCONF_SYNC_OFFSET_MAX_NEIGHBOR, mask)) 1720 conf->dot11MeshNbrOffsetMaxNeighbor = 1721 nconf->dot11MeshNbrOffsetMaxNeighbor; 1722 if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES, mask)) 1723 conf->dot11MeshHWMPmaxPREQretries = 1724 nconf->dot11MeshHWMPmaxPREQretries; 1725 if (_chg_mesh_attr(NL80211_MESHCONF_PATH_REFRESH_TIME, mask)) 1726 conf->path_refresh_time = nconf->path_refresh_time; 1727 if (_chg_mesh_attr(NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT, mask)) 1728 conf->min_discovery_timeout = nconf->min_discovery_timeout; 1729 if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT, mask)) 1730 conf->dot11MeshHWMPactivePathTimeout = 1731 nconf->dot11MeshHWMPactivePathTimeout; 1732 if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL, mask)) 1733 conf->dot11MeshHWMPpreqMinInterval = 1734 nconf->dot11MeshHWMPpreqMinInterval; 1735 if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_PERR_MIN_INTERVAL, mask)) 1736 conf->dot11MeshHWMPperrMinInterval = 1737 nconf->dot11MeshHWMPperrMinInterval; 1738 if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME, 1739 mask)) 1740 conf->dot11MeshHWMPnetDiameterTraversalTime = 1741 nconf->dot11MeshHWMPnetDiameterTraversalTime; 1742 if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_ROOTMODE, mask)) { 1743 conf->dot11MeshHWMPRootMode = nconf->dot11MeshHWMPRootMode; 1744 ieee80211_mesh_root_setup(ifmsh); 1745 } 1746 if (_chg_mesh_attr(NL80211_MESHCONF_GATE_ANNOUNCEMENTS, mask)) { 1747 /* our current gate announcement implementation rides on root 1748 * announcements, so require this ifmsh to also be a root node 1749 * */ 1750 if (nconf->dot11MeshGateAnnouncementProtocol && 1751 !(conf->dot11MeshHWMPRootMode > IEEE80211_ROOTMODE_ROOT)) { 1752 conf->dot11MeshHWMPRootMode = IEEE80211_PROACTIVE_RANN; 1753 ieee80211_mesh_root_setup(ifmsh); 1754 } 1755 conf->dot11MeshGateAnnouncementProtocol = 1756 nconf->dot11MeshGateAnnouncementProtocol; 1757 } 1758 if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_RANN_INTERVAL, mask)) 1759 conf->dot11MeshHWMPRannInterval = 1760 nconf->dot11MeshHWMPRannInterval; 1761 if (_chg_mesh_attr(NL80211_MESHCONF_FORWARDING, mask)) 1762 conf->dot11MeshForwarding = nconf->dot11MeshForwarding; 1763 if (_chg_mesh_attr(NL80211_MESHCONF_RSSI_THRESHOLD, mask)) { 1764 /* our RSSI threshold implementation is supported only for 1765 * devices that report signal in dBm. 1766 */ 1767 if (!(sdata->local->hw.flags & IEEE80211_HW_SIGNAL_DBM)) 1768 return -ENOTSUPP; 1769 conf->rssi_threshold = nconf->rssi_threshold; 1770 } 1771 if (_chg_mesh_attr(NL80211_MESHCONF_HT_OPMODE, mask)) { 1772 conf->ht_opmode = nconf->ht_opmode; 1773 sdata->vif.bss_conf.ht_operation_mode = nconf->ht_opmode; 1774 ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_HT); 1775 } 1776 if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_PATH_TO_ROOT_TIMEOUT, mask)) 1777 conf->dot11MeshHWMPactivePathToRootTimeout = 1778 nconf->dot11MeshHWMPactivePathToRootTimeout; 1779 if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_ROOT_INTERVAL, mask)) 1780 conf->dot11MeshHWMProotInterval = 1781 nconf->dot11MeshHWMProotInterval; 1782 if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_CONFIRMATION_INTERVAL, mask)) 1783 conf->dot11MeshHWMPconfirmationInterval = 1784 nconf->dot11MeshHWMPconfirmationInterval; 1785 if (_chg_mesh_attr(NL80211_MESHCONF_POWER_MODE, mask)) { 1786 conf->power_mode = nconf->power_mode; 1787 ieee80211_mps_local_status_update(sdata); 1788 } 1789 if (_chg_mesh_attr(NL80211_MESHCONF_AWAKE_WINDOW, mask)) 1790 conf->dot11MeshAwakeWindowDuration = 1791 nconf->dot11MeshAwakeWindowDuration; 1792 if (_chg_mesh_attr(NL80211_MESHCONF_PLINK_TIMEOUT, mask)) 1793 conf->plink_timeout = nconf->plink_timeout; 1794 ieee80211_mbss_info_change_notify(sdata, BSS_CHANGED_BEACON); 1795 return 0; 1796 } 1797 1798 static int ieee80211_join_mesh(struct wiphy *wiphy, struct net_device *dev, 1799 const struct mesh_config *conf, 1800 const struct mesh_setup *setup) 1801 { 1802 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 1803 struct ieee80211_if_mesh *ifmsh = &sdata->u.mesh; 1804 int err; 1805 1806 memcpy(&ifmsh->mshcfg, conf, sizeof(struct mesh_config)); 1807 err = copy_mesh_setup(ifmsh, setup); 1808 if (err) 1809 return err; 1810 1811 /* can mesh use other SMPS modes? */ 1812 sdata->smps_mode = IEEE80211_SMPS_OFF; 1813 sdata->needed_rx_chains = sdata->local->rx_chains; 1814 1815 mutex_lock(&sdata->local->mtx); 1816 err = ieee80211_vif_use_channel(sdata, &setup->chandef, 1817 IEEE80211_CHANCTX_SHARED); 1818 mutex_unlock(&sdata->local->mtx); 1819 if (err) 1820 return err; 1821 1822 return ieee80211_start_mesh(sdata); 1823 } 1824 1825 static int ieee80211_leave_mesh(struct wiphy *wiphy, struct net_device *dev) 1826 { 1827 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 1828 1829 ieee80211_stop_mesh(sdata); 1830 mutex_lock(&sdata->local->mtx); 1831 ieee80211_vif_release_channel(sdata); 1832 mutex_unlock(&sdata->local->mtx); 1833 1834 return 0; 1835 } 1836 #endif 1837 1838 static int ieee80211_change_bss(struct wiphy *wiphy, 1839 struct net_device *dev, 1840 struct bss_parameters *params) 1841 { 1842 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 1843 enum ieee80211_band band; 1844 u32 changed = 0; 1845 1846 if (!sdata_dereference(sdata->u.ap.beacon, sdata)) 1847 return -ENOENT; 1848 1849 band = ieee80211_get_sdata_band(sdata); 1850 1851 if (params->use_cts_prot >= 0) { 1852 sdata->vif.bss_conf.use_cts_prot = params->use_cts_prot; 1853 changed |= BSS_CHANGED_ERP_CTS_PROT; 1854 } 1855 if (params->use_short_preamble >= 0) { 1856 sdata->vif.bss_conf.use_short_preamble = 1857 params->use_short_preamble; 1858 changed |= BSS_CHANGED_ERP_PREAMBLE; 1859 } 1860 1861 if (!sdata->vif.bss_conf.use_short_slot && 1862 band == IEEE80211_BAND_5GHZ) { 1863 sdata->vif.bss_conf.use_short_slot = true; 1864 changed |= BSS_CHANGED_ERP_SLOT; 1865 } 1866 1867 if (params->use_short_slot_time >= 0) { 1868 sdata->vif.bss_conf.use_short_slot = 1869 params->use_short_slot_time; 1870 changed |= BSS_CHANGED_ERP_SLOT; 1871 } 1872 1873 if (params->basic_rates) { 1874 ieee80211_parse_bitrates(&sdata->vif.bss_conf.chandef, 1875 wiphy->bands[band], 1876 params->basic_rates, 1877 params->basic_rates_len, 1878 &sdata->vif.bss_conf.basic_rates); 1879 changed |= BSS_CHANGED_BASIC_RATES; 1880 } 1881 1882 if (params->ap_isolate >= 0) { 1883 if (params->ap_isolate) 1884 sdata->flags |= IEEE80211_SDATA_DONT_BRIDGE_PACKETS; 1885 else 1886 sdata->flags &= ~IEEE80211_SDATA_DONT_BRIDGE_PACKETS; 1887 } 1888 1889 if (params->ht_opmode >= 0) { 1890 sdata->vif.bss_conf.ht_operation_mode = 1891 (u16) params->ht_opmode; 1892 changed |= BSS_CHANGED_HT; 1893 } 1894 1895 if (params->p2p_ctwindow >= 0) { 1896 sdata->vif.bss_conf.p2p_noa_attr.oppps_ctwindow &= 1897 ~IEEE80211_P2P_OPPPS_CTWINDOW_MASK; 1898 sdata->vif.bss_conf.p2p_noa_attr.oppps_ctwindow |= 1899 params->p2p_ctwindow & IEEE80211_P2P_OPPPS_CTWINDOW_MASK; 1900 changed |= BSS_CHANGED_P2P_PS; 1901 } 1902 1903 if (params->p2p_opp_ps > 0) { 1904 sdata->vif.bss_conf.p2p_noa_attr.oppps_ctwindow |= 1905 IEEE80211_P2P_OPPPS_ENABLE_BIT; 1906 changed |= BSS_CHANGED_P2P_PS; 1907 } else if (params->p2p_opp_ps == 0) { 1908 sdata->vif.bss_conf.p2p_noa_attr.oppps_ctwindow &= 1909 ~IEEE80211_P2P_OPPPS_ENABLE_BIT; 1910 changed |= BSS_CHANGED_P2P_PS; 1911 } 1912 1913 ieee80211_bss_info_change_notify(sdata, changed); 1914 1915 return 0; 1916 } 1917 1918 static int ieee80211_set_txq_params(struct wiphy *wiphy, 1919 struct net_device *dev, 1920 struct ieee80211_txq_params *params) 1921 { 1922 struct ieee80211_local *local = wiphy_priv(wiphy); 1923 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 1924 struct ieee80211_tx_queue_params p; 1925 1926 if (!local->ops->conf_tx) 1927 return -EOPNOTSUPP; 1928 1929 if (local->hw.queues < IEEE80211_NUM_ACS) 1930 return -EOPNOTSUPP; 1931 1932 memset(&p, 0, sizeof(p)); 1933 p.aifs = params->aifs; 1934 p.cw_max = params->cwmax; 1935 p.cw_min = params->cwmin; 1936 p.txop = params->txop; 1937 1938 /* 1939 * Setting tx queue params disables u-apsd because it's only 1940 * called in master mode. 1941 */ 1942 p.uapsd = false; 1943 1944 sdata->tx_conf[params->ac] = p; 1945 if (drv_conf_tx(local, sdata, params->ac, &p)) { 1946 wiphy_debug(local->hw.wiphy, 1947 "failed to set TX queue parameters for AC %d\n", 1948 params->ac); 1949 return -EINVAL; 1950 } 1951 1952 ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_QOS); 1953 1954 return 0; 1955 } 1956 1957 #ifdef CONFIG_PM 1958 static int ieee80211_suspend(struct wiphy *wiphy, 1959 struct cfg80211_wowlan *wowlan) 1960 { 1961 return __ieee80211_suspend(wiphy_priv(wiphy), wowlan); 1962 } 1963 1964 static int ieee80211_resume(struct wiphy *wiphy) 1965 { 1966 return __ieee80211_resume(wiphy_priv(wiphy)); 1967 } 1968 #else 1969 #define ieee80211_suspend NULL 1970 #define ieee80211_resume NULL 1971 #endif 1972 1973 static int ieee80211_scan(struct wiphy *wiphy, 1974 struct cfg80211_scan_request *req) 1975 { 1976 struct ieee80211_sub_if_data *sdata; 1977 1978 sdata = IEEE80211_WDEV_TO_SUB_IF(req->wdev); 1979 1980 switch (ieee80211_vif_type_p2p(&sdata->vif)) { 1981 case NL80211_IFTYPE_STATION: 1982 case NL80211_IFTYPE_ADHOC: 1983 case NL80211_IFTYPE_MESH_POINT: 1984 case NL80211_IFTYPE_P2P_CLIENT: 1985 case NL80211_IFTYPE_P2P_DEVICE: 1986 break; 1987 case NL80211_IFTYPE_P2P_GO: 1988 if (sdata->local->ops->hw_scan) 1989 break; 1990 /* 1991 * FIXME: implement NoA while scanning in software, 1992 * for now fall through to allow scanning only when 1993 * beaconing hasn't been configured yet 1994 */ 1995 case NL80211_IFTYPE_AP: 1996 /* 1997 * If the scan has been forced (and the driver supports 1998 * forcing), don't care about being beaconing already. 1999 * This will create problems to the attached stations (e.g. all 2000 * the frames sent while scanning on other channel will be 2001 * lost) 2002 */ 2003 if (sdata->u.ap.beacon && 2004 (!(wiphy->features & NL80211_FEATURE_AP_SCAN) || 2005 !(req->flags & NL80211_SCAN_FLAG_AP))) 2006 return -EOPNOTSUPP; 2007 break; 2008 default: 2009 return -EOPNOTSUPP; 2010 } 2011 2012 return ieee80211_request_scan(sdata, req); 2013 } 2014 2015 static int 2016 ieee80211_sched_scan_start(struct wiphy *wiphy, 2017 struct net_device *dev, 2018 struct cfg80211_sched_scan_request *req) 2019 { 2020 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 2021 2022 if (!sdata->local->ops->sched_scan_start) 2023 return -EOPNOTSUPP; 2024 2025 return ieee80211_request_sched_scan_start(sdata, req); 2026 } 2027 2028 static int 2029 ieee80211_sched_scan_stop(struct wiphy *wiphy, struct net_device *dev) 2030 { 2031 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 2032 2033 if (!sdata->local->ops->sched_scan_stop) 2034 return -EOPNOTSUPP; 2035 2036 return ieee80211_request_sched_scan_stop(sdata); 2037 } 2038 2039 static int ieee80211_auth(struct wiphy *wiphy, struct net_device *dev, 2040 struct cfg80211_auth_request *req) 2041 { 2042 return ieee80211_mgd_auth(IEEE80211_DEV_TO_SUB_IF(dev), req); 2043 } 2044 2045 static int ieee80211_assoc(struct wiphy *wiphy, struct net_device *dev, 2046 struct cfg80211_assoc_request *req) 2047 { 2048 return ieee80211_mgd_assoc(IEEE80211_DEV_TO_SUB_IF(dev), req); 2049 } 2050 2051 static int ieee80211_deauth(struct wiphy *wiphy, struct net_device *dev, 2052 struct cfg80211_deauth_request *req) 2053 { 2054 return ieee80211_mgd_deauth(IEEE80211_DEV_TO_SUB_IF(dev), req); 2055 } 2056 2057 static int ieee80211_disassoc(struct wiphy *wiphy, struct net_device *dev, 2058 struct cfg80211_disassoc_request *req) 2059 { 2060 return ieee80211_mgd_disassoc(IEEE80211_DEV_TO_SUB_IF(dev), req); 2061 } 2062 2063 static int ieee80211_join_ibss(struct wiphy *wiphy, struct net_device *dev, 2064 struct cfg80211_ibss_params *params) 2065 { 2066 return ieee80211_ibss_join(IEEE80211_DEV_TO_SUB_IF(dev), params); 2067 } 2068 2069 static int ieee80211_leave_ibss(struct wiphy *wiphy, struct net_device *dev) 2070 { 2071 return ieee80211_ibss_leave(IEEE80211_DEV_TO_SUB_IF(dev)); 2072 } 2073 2074 static int ieee80211_join_ocb(struct wiphy *wiphy, struct net_device *dev, 2075 struct ocb_setup *setup) 2076 { 2077 return ieee80211_ocb_join(IEEE80211_DEV_TO_SUB_IF(dev), setup); 2078 } 2079 2080 static int ieee80211_leave_ocb(struct wiphy *wiphy, struct net_device *dev) 2081 { 2082 return ieee80211_ocb_leave(IEEE80211_DEV_TO_SUB_IF(dev)); 2083 } 2084 2085 static int ieee80211_set_mcast_rate(struct wiphy *wiphy, struct net_device *dev, 2086 int rate[IEEE80211_NUM_BANDS]) 2087 { 2088 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 2089 2090 memcpy(sdata->vif.bss_conf.mcast_rate, rate, 2091 sizeof(int) * IEEE80211_NUM_BANDS); 2092 2093 return 0; 2094 } 2095 2096 static int ieee80211_set_wiphy_params(struct wiphy *wiphy, u32 changed) 2097 { 2098 struct ieee80211_local *local = wiphy_priv(wiphy); 2099 int err; 2100 2101 if (changed & WIPHY_PARAM_FRAG_THRESHOLD) { 2102 err = drv_set_frag_threshold(local, wiphy->frag_threshold); 2103 2104 if (err) 2105 return err; 2106 } 2107 2108 if ((changed & WIPHY_PARAM_COVERAGE_CLASS) || 2109 (changed & WIPHY_PARAM_DYN_ACK)) { 2110 s16 coverage_class; 2111 2112 coverage_class = changed & WIPHY_PARAM_COVERAGE_CLASS ? 2113 wiphy->coverage_class : -1; 2114 err = drv_set_coverage_class(local, coverage_class); 2115 2116 if (err) 2117 return err; 2118 } 2119 2120 if (changed & WIPHY_PARAM_RTS_THRESHOLD) { 2121 err = drv_set_rts_threshold(local, wiphy->rts_threshold); 2122 2123 if (err) 2124 return err; 2125 } 2126 2127 if (changed & WIPHY_PARAM_RETRY_SHORT) { 2128 if (wiphy->retry_short > IEEE80211_MAX_TX_RETRY) 2129 return -EINVAL; 2130 local->hw.conf.short_frame_max_tx_count = wiphy->retry_short; 2131 } 2132 if (changed & WIPHY_PARAM_RETRY_LONG) { 2133 if (wiphy->retry_long > IEEE80211_MAX_TX_RETRY) 2134 return -EINVAL; 2135 local->hw.conf.long_frame_max_tx_count = wiphy->retry_long; 2136 } 2137 if (changed & 2138 (WIPHY_PARAM_RETRY_SHORT | WIPHY_PARAM_RETRY_LONG)) 2139 ieee80211_hw_config(local, IEEE80211_CONF_CHANGE_RETRY_LIMITS); 2140 2141 return 0; 2142 } 2143 2144 static int ieee80211_set_tx_power(struct wiphy *wiphy, 2145 struct wireless_dev *wdev, 2146 enum nl80211_tx_power_setting type, int mbm) 2147 { 2148 struct ieee80211_local *local = wiphy_priv(wiphy); 2149 struct ieee80211_sub_if_data *sdata; 2150 enum nl80211_tx_power_setting txp_type = type; 2151 bool update_txp_type = false; 2152 2153 if (wdev) { 2154 sdata = IEEE80211_WDEV_TO_SUB_IF(wdev); 2155 2156 switch (type) { 2157 case NL80211_TX_POWER_AUTOMATIC: 2158 sdata->user_power_level = IEEE80211_UNSET_POWER_LEVEL; 2159 txp_type = NL80211_TX_POWER_LIMITED; 2160 break; 2161 case NL80211_TX_POWER_LIMITED: 2162 case NL80211_TX_POWER_FIXED: 2163 if (mbm < 0 || (mbm % 100)) 2164 return -EOPNOTSUPP; 2165 sdata->user_power_level = MBM_TO_DBM(mbm); 2166 break; 2167 } 2168 2169 if (txp_type != sdata->vif.bss_conf.txpower_type) { 2170 update_txp_type = true; 2171 sdata->vif.bss_conf.txpower_type = txp_type; 2172 } 2173 2174 ieee80211_recalc_txpower(sdata, update_txp_type); 2175 2176 return 0; 2177 } 2178 2179 switch (type) { 2180 case NL80211_TX_POWER_AUTOMATIC: 2181 local->user_power_level = IEEE80211_UNSET_POWER_LEVEL; 2182 txp_type = NL80211_TX_POWER_LIMITED; 2183 break; 2184 case NL80211_TX_POWER_LIMITED: 2185 case NL80211_TX_POWER_FIXED: 2186 if (mbm < 0 || (mbm % 100)) 2187 return -EOPNOTSUPP; 2188 local->user_power_level = MBM_TO_DBM(mbm); 2189 break; 2190 } 2191 2192 mutex_lock(&local->iflist_mtx); 2193 list_for_each_entry(sdata, &local->interfaces, list) { 2194 sdata->user_power_level = local->user_power_level; 2195 if (txp_type != sdata->vif.bss_conf.txpower_type) 2196 update_txp_type = true; 2197 sdata->vif.bss_conf.txpower_type = txp_type; 2198 } 2199 list_for_each_entry(sdata, &local->interfaces, list) 2200 ieee80211_recalc_txpower(sdata, update_txp_type); 2201 mutex_unlock(&local->iflist_mtx); 2202 2203 return 0; 2204 } 2205 2206 static int ieee80211_get_tx_power(struct wiphy *wiphy, 2207 struct wireless_dev *wdev, 2208 int *dbm) 2209 { 2210 struct ieee80211_local *local = wiphy_priv(wiphy); 2211 struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev); 2212 2213 if (local->ops->get_txpower) 2214 return drv_get_txpower(local, sdata, dbm); 2215 2216 if (!local->use_chanctx) 2217 *dbm = local->hw.conf.power_level; 2218 else 2219 *dbm = sdata->vif.bss_conf.txpower; 2220 2221 return 0; 2222 } 2223 2224 static int ieee80211_set_wds_peer(struct wiphy *wiphy, struct net_device *dev, 2225 const u8 *addr) 2226 { 2227 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 2228 2229 memcpy(&sdata->u.wds.remote_addr, addr, ETH_ALEN); 2230 2231 return 0; 2232 } 2233 2234 static void ieee80211_rfkill_poll(struct wiphy *wiphy) 2235 { 2236 struct ieee80211_local *local = wiphy_priv(wiphy); 2237 2238 drv_rfkill_poll(local); 2239 } 2240 2241 #ifdef CONFIG_NL80211_TESTMODE 2242 static int ieee80211_testmode_cmd(struct wiphy *wiphy, 2243 struct wireless_dev *wdev, 2244 void *data, int len) 2245 { 2246 struct ieee80211_local *local = wiphy_priv(wiphy); 2247 struct ieee80211_vif *vif = NULL; 2248 2249 if (!local->ops->testmode_cmd) 2250 return -EOPNOTSUPP; 2251 2252 if (wdev) { 2253 struct ieee80211_sub_if_data *sdata; 2254 2255 sdata = IEEE80211_WDEV_TO_SUB_IF(wdev); 2256 if (sdata->flags & IEEE80211_SDATA_IN_DRIVER) 2257 vif = &sdata->vif; 2258 } 2259 2260 return local->ops->testmode_cmd(&local->hw, vif, data, len); 2261 } 2262 2263 static int ieee80211_testmode_dump(struct wiphy *wiphy, 2264 struct sk_buff *skb, 2265 struct netlink_callback *cb, 2266 void *data, int len) 2267 { 2268 struct ieee80211_local *local = wiphy_priv(wiphy); 2269 2270 if (!local->ops->testmode_dump) 2271 return -EOPNOTSUPP; 2272 2273 return local->ops->testmode_dump(&local->hw, skb, cb, data, len); 2274 } 2275 #endif 2276 2277 int __ieee80211_request_smps_ap(struct ieee80211_sub_if_data *sdata, 2278 enum ieee80211_smps_mode smps_mode) 2279 { 2280 struct sta_info *sta; 2281 enum ieee80211_smps_mode old_req; 2282 2283 if (WARN_ON_ONCE(sdata->vif.type != NL80211_IFTYPE_AP)) 2284 return -EINVAL; 2285 2286 if (sdata->vif.bss_conf.chandef.width == NL80211_CHAN_WIDTH_20_NOHT) 2287 return 0; 2288 2289 old_req = sdata->u.ap.req_smps; 2290 sdata->u.ap.req_smps = smps_mode; 2291 2292 /* AUTOMATIC doesn't mean much for AP - don't allow it */ 2293 if (old_req == smps_mode || 2294 smps_mode == IEEE80211_SMPS_AUTOMATIC) 2295 return 0; 2296 2297 /* If no associated stations, there's no need to do anything */ 2298 if (!atomic_read(&sdata->u.ap.num_mcast_sta)) { 2299 sdata->smps_mode = smps_mode; 2300 ieee80211_queue_work(&sdata->local->hw, &sdata->recalc_smps); 2301 return 0; 2302 } 2303 2304 ht_dbg(sdata, 2305 "SMPS %d requested in AP mode, sending Action frame to %d stations\n", 2306 smps_mode, atomic_read(&sdata->u.ap.num_mcast_sta)); 2307 2308 mutex_lock(&sdata->local->sta_mtx); 2309 list_for_each_entry(sta, &sdata->local->sta_list, list) { 2310 /* 2311 * Only stations associated to our AP and 2312 * associated VLANs 2313 */ 2314 if (sta->sdata->bss != &sdata->u.ap) 2315 continue; 2316 2317 /* This station doesn't support MIMO - skip it */ 2318 if (sta_info_tx_streams(sta) == 1) 2319 continue; 2320 2321 /* 2322 * Don't wake up a STA just to send the action frame 2323 * unless we are getting more restrictive. 2324 */ 2325 if (test_sta_flag(sta, WLAN_STA_PS_STA) && 2326 !ieee80211_smps_is_restrictive(sta->known_smps_mode, 2327 smps_mode)) { 2328 ht_dbg(sdata, "Won't send SMPS to sleeping STA %pM\n", 2329 sta->sta.addr); 2330 continue; 2331 } 2332 2333 /* 2334 * If the STA is not authorized, wait until it gets 2335 * authorized and the action frame will be sent then. 2336 */ 2337 if (!test_sta_flag(sta, WLAN_STA_AUTHORIZED)) 2338 continue; 2339 2340 ht_dbg(sdata, "Sending SMPS to %pM\n", sta->sta.addr); 2341 ieee80211_send_smps_action(sdata, smps_mode, sta->sta.addr, 2342 sdata->vif.bss_conf.bssid); 2343 } 2344 mutex_unlock(&sdata->local->sta_mtx); 2345 2346 sdata->smps_mode = smps_mode; 2347 ieee80211_queue_work(&sdata->local->hw, &sdata->recalc_smps); 2348 2349 return 0; 2350 } 2351 2352 int __ieee80211_request_smps_mgd(struct ieee80211_sub_if_data *sdata, 2353 enum ieee80211_smps_mode smps_mode) 2354 { 2355 const u8 *ap; 2356 enum ieee80211_smps_mode old_req; 2357 int err; 2358 2359 lockdep_assert_held(&sdata->wdev.mtx); 2360 2361 if (WARN_ON_ONCE(sdata->vif.type != NL80211_IFTYPE_STATION)) 2362 return -EINVAL; 2363 2364 old_req = sdata->u.mgd.req_smps; 2365 sdata->u.mgd.req_smps = smps_mode; 2366 2367 if (old_req == smps_mode && 2368 smps_mode != IEEE80211_SMPS_AUTOMATIC) 2369 return 0; 2370 2371 /* 2372 * If not associated, or current association is not an HT 2373 * association, there's no need to do anything, just store 2374 * the new value until we associate. 2375 */ 2376 if (!sdata->u.mgd.associated || 2377 sdata->vif.bss_conf.chandef.width == NL80211_CHAN_WIDTH_20_NOHT) 2378 return 0; 2379 2380 ap = sdata->u.mgd.associated->bssid; 2381 2382 if (smps_mode == IEEE80211_SMPS_AUTOMATIC) { 2383 if (sdata->u.mgd.powersave) 2384 smps_mode = IEEE80211_SMPS_DYNAMIC; 2385 else 2386 smps_mode = IEEE80211_SMPS_OFF; 2387 } 2388 2389 /* send SM PS frame to AP */ 2390 err = ieee80211_send_smps_action(sdata, smps_mode, 2391 ap, ap); 2392 if (err) 2393 sdata->u.mgd.req_smps = old_req; 2394 2395 return err; 2396 } 2397 2398 static int ieee80211_set_power_mgmt(struct wiphy *wiphy, struct net_device *dev, 2399 bool enabled, int timeout) 2400 { 2401 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 2402 struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr); 2403 2404 if (sdata->vif.type != NL80211_IFTYPE_STATION) 2405 return -EOPNOTSUPP; 2406 2407 if (!(local->hw.flags & IEEE80211_HW_SUPPORTS_PS)) 2408 return -EOPNOTSUPP; 2409 2410 if (enabled == sdata->u.mgd.powersave && 2411 timeout == local->dynamic_ps_forced_timeout) 2412 return 0; 2413 2414 sdata->u.mgd.powersave = enabled; 2415 local->dynamic_ps_forced_timeout = timeout; 2416 2417 /* no change, but if automatic follow powersave */ 2418 sdata_lock(sdata); 2419 __ieee80211_request_smps_mgd(sdata, sdata->u.mgd.req_smps); 2420 sdata_unlock(sdata); 2421 2422 if (local->hw.flags & IEEE80211_HW_SUPPORTS_DYNAMIC_PS) 2423 ieee80211_hw_config(local, IEEE80211_CONF_CHANGE_PS); 2424 2425 ieee80211_recalc_ps(local, -1); 2426 ieee80211_recalc_ps_vif(sdata); 2427 2428 return 0; 2429 } 2430 2431 static int ieee80211_set_cqm_rssi_config(struct wiphy *wiphy, 2432 struct net_device *dev, 2433 s32 rssi_thold, u32 rssi_hyst) 2434 { 2435 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 2436 struct ieee80211_vif *vif = &sdata->vif; 2437 struct ieee80211_bss_conf *bss_conf = &vif->bss_conf; 2438 2439 if (rssi_thold == bss_conf->cqm_rssi_thold && 2440 rssi_hyst == bss_conf->cqm_rssi_hyst) 2441 return 0; 2442 2443 bss_conf->cqm_rssi_thold = rssi_thold; 2444 bss_conf->cqm_rssi_hyst = rssi_hyst; 2445 2446 /* tell the driver upon association, unless already associated */ 2447 if (sdata->u.mgd.associated && 2448 sdata->vif.driver_flags & IEEE80211_VIF_SUPPORTS_CQM_RSSI) 2449 ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_CQM); 2450 2451 return 0; 2452 } 2453 2454 static int ieee80211_set_bitrate_mask(struct wiphy *wiphy, 2455 struct net_device *dev, 2456 const u8 *addr, 2457 const struct cfg80211_bitrate_mask *mask) 2458 { 2459 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 2460 struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr); 2461 int i, ret; 2462 2463 if (!ieee80211_sdata_running(sdata)) 2464 return -ENETDOWN; 2465 2466 if (local->hw.flags & IEEE80211_HW_HAS_RATE_CONTROL) { 2467 ret = drv_set_bitrate_mask(local, sdata, mask); 2468 if (ret) 2469 return ret; 2470 } 2471 2472 for (i = 0; i < IEEE80211_NUM_BANDS; i++) { 2473 struct ieee80211_supported_band *sband = wiphy->bands[i]; 2474 int j; 2475 2476 sdata->rc_rateidx_mask[i] = mask->control[i].legacy; 2477 memcpy(sdata->rc_rateidx_mcs_mask[i], mask->control[i].ht_mcs, 2478 sizeof(mask->control[i].ht_mcs)); 2479 2480 sdata->rc_has_mcs_mask[i] = false; 2481 if (!sband) 2482 continue; 2483 2484 for (j = 0; j < IEEE80211_HT_MCS_MASK_LEN; j++) 2485 if (~sdata->rc_rateidx_mcs_mask[i][j]) { 2486 sdata->rc_has_mcs_mask[i] = true; 2487 break; 2488 } 2489 } 2490 2491 return 0; 2492 } 2493 2494 static bool ieee80211_coalesce_started_roc(struct ieee80211_local *local, 2495 struct ieee80211_roc_work *new_roc, 2496 struct ieee80211_roc_work *cur_roc) 2497 { 2498 unsigned long j = jiffies; 2499 unsigned long cur_roc_end = cur_roc->hw_start_time + 2500 msecs_to_jiffies(cur_roc->duration); 2501 struct ieee80211_roc_work *next_roc; 2502 int new_dur; 2503 2504 if (WARN_ON(!cur_roc->started || !cur_roc->hw_begun)) 2505 return false; 2506 2507 if (time_after(j + IEEE80211_ROC_MIN_LEFT, cur_roc_end)) 2508 return false; 2509 2510 ieee80211_handle_roc_started(new_roc); 2511 2512 new_dur = new_roc->duration - jiffies_to_msecs(cur_roc_end - j); 2513 2514 /* cur_roc is long enough - add new_roc to the dependents list. */ 2515 if (new_dur <= 0) { 2516 list_add_tail(&new_roc->list, &cur_roc->dependents); 2517 return true; 2518 } 2519 2520 new_roc->duration = new_dur; 2521 2522 /* 2523 * if cur_roc was already coalesced before, we might 2524 * want to extend the next roc instead of adding 2525 * a new one. 2526 */ 2527 next_roc = list_entry(cur_roc->list.next, 2528 struct ieee80211_roc_work, list); 2529 if (&next_roc->list != &local->roc_list && 2530 next_roc->chan == new_roc->chan && 2531 next_roc->sdata == new_roc->sdata && 2532 !WARN_ON(next_roc->started)) { 2533 list_add_tail(&new_roc->list, &next_roc->dependents); 2534 next_roc->duration = max(next_roc->duration, 2535 new_roc->duration); 2536 next_roc->type = max(next_roc->type, new_roc->type); 2537 return true; 2538 } 2539 2540 /* add right after cur_roc */ 2541 list_add(&new_roc->list, &cur_roc->list); 2542 2543 return true; 2544 } 2545 2546 static int ieee80211_start_roc_work(struct ieee80211_local *local, 2547 struct ieee80211_sub_if_data *sdata, 2548 struct ieee80211_channel *channel, 2549 unsigned int duration, u64 *cookie, 2550 struct sk_buff *txskb, 2551 enum ieee80211_roc_type type) 2552 { 2553 struct ieee80211_roc_work *roc, *tmp; 2554 bool queued = false; 2555 int ret; 2556 2557 lockdep_assert_held(&local->mtx); 2558 2559 if (local->use_chanctx && !local->ops->remain_on_channel) 2560 return -EOPNOTSUPP; 2561 2562 roc = kzalloc(sizeof(*roc), GFP_KERNEL); 2563 if (!roc) 2564 return -ENOMEM; 2565 2566 /* 2567 * If the duration is zero, then the driver 2568 * wouldn't actually do anything. Set it to 2569 * 10 for now. 2570 * 2571 * TODO: cancel the off-channel operation 2572 * when we get the SKB's TX status and 2573 * the wait time was zero before. 2574 */ 2575 if (!duration) 2576 duration = 10; 2577 2578 roc->chan = channel; 2579 roc->duration = duration; 2580 roc->req_duration = duration; 2581 roc->frame = txskb; 2582 roc->type = type; 2583 roc->mgmt_tx_cookie = (unsigned long)txskb; 2584 roc->sdata = sdata; 2585 INIT_DELAYED_WORK(&roc->work, ieee80211_sw_roc_work); 2586 INIT_LIST_HEAD(&roc->dependents); 2587 2588 /* 2589 * cookie is either the roc cookie (for normal roc) 2590 * or the SKB (for mgmt TX) 2591 */ 2592 if (!txskb) { 2593 /* local->mtx protects this */ 2594 local->roc_cookie_counter++; 2595 roc->cookie = local->roc_cookie_counter; 2596 /* wow, you wrapped 64 bits ... more likely a bug */ 2597 if (WARN_ON(roc->cookie == 0)) { 2598 roc->cookie = 1; 2599 local->roc_cookie_counter++; 2600 } 2601 *cookie = roc->cookie; 2602 } else { 2603 *cookie = (unsigned long)txskb; 2604 } 2605 2606 /* if there's one pending or we're scanning, queue this one */ 2607 if (!list_empty(&local->roc_list) || 2608 local->scanning || ieee80211_is_radar_required(local)) 2609 goto out_check_combine; 2610 2611 /* if not HW assist, just queue & schedule work */ 2612 if (!local->ops->remain_on_channel) { 2613 ieee80211_queue_delayed_work(&local->hw, &roc->work, 0); 2614 goto out_queue; 2615 } 2616 2617 /* otherwise actually kick it off here (for error handling) */ 2618 2619 ret = drv_remain_on_channel(local, sdata, channel, duration, type); 2620 if (ret) { 2621 kfree(roc); 2622 return ret; 2623 } 2624 2625 roc->started = true; 2626 goto out_queue; 2627 2628 out_check_combine: 2629 list_for_each_entry(tmp, &local->roc_list, list) { 2630 if (tmp->chan != channel || tmp->sdata != sdata) 2631 continue; 2632 2633 /* 2634 * Extend this ROC if possible: 2635 * 2636 * If it hasn't started yet, just increase the duration 2637 * and add the new one to the list of dependents. 2638 * If the type of the new ROC has higher priority, modify the 2639 * type of the previous one to match that of the new one. 2640 */ 2641 if (!tmp->started) { 2642 list_add_tail(&roc->list, &tmp->dependents); 2643 tmp->duration = max(tmp->duration, roc->duration); 2644 tmp->type = max(tmp->type, roc->type); 2645 queued = true; 2646 break; 2647 } 2648 2649 /* If it has already started, it's more difficult ... */ 2650 if (local->ops->remain_on_channel) { 2651 /* 2652 * In the offloaded ROC case, if it hasn't begun, add 2653 * this new one to the dependent list to be handled 2654 * when the master one begins. If it has begun, 2655 * check that there's still a minimum time left and 2656 * if so, start this one, transmitting the frame, but 2657 * add it to the list directly after this one with 2658 * a reduced time so we'll ask the driver to execute 2659 * it right after finishing the previous one, in the 2660 * hope that it'll also be executed right afterwards, 2661 * effectively extending the old one. 2662 * If there's no minimum time left, just add it to the 2663 * normal list. 2664 * TODO: the ROC type is ignored here, assuming that it 2665 * is better to immediately use the current ROC. 2666 */ 2667 if (!tmp->hw_begun) { 2668 list_add_tail(&roc->list, &tmp->dependents); 2669 queued = true; 2670 break; 2671 } 2672 2673 if (ieee80211_coalesce_started_roc(local, roc, tmp)) 2674 queued = true; 2675 } else if (del_timer_sync(&tmp->work.timer)) { 2676 unsigned long new_end; 2677 2678 /* 2679 * In the software ROC case, cancel the timer, if 2680 * that fails then the finish work is already 2681 * queued/pending and thus we queue the new ROC 2682 * normally, if that succeeds then we can extend 2683 * the timer duration and TX the frame (if any.) 2684 */ 2685 2686 list_add_tail(&roc->list, &tmp->dependents); 2687 queued = true; 2688 2689 new_end = jiffies + msecs_to_jiffies(roc->duration); 2690 2691 /* ok, it was started & we canceled timer */ 2692 if (time_after(new_end, tmp->work.timer.expires)) 2693 mod_timer(&tmp->work.timer, new_end); 2694 else 2695 add_timer(&tmp->work.timer); 2696 2697 ieee80211_handle_roc_started(roc); 2698 } 2699 break; 2700 } 2701 2702 out_queue: 2703 if (!queued) 2704 list_add_tail(&roc->list, &local->roc_list); 2705 2706 return 0; 2707 } 2708 2709 static int ieee80211_remain_on_channel(struct wiphy *wiphy, 2710 struct wireless_dev *wdev, 2711 struct ieee80211_channel *chan, 2712 unsigned int duration, 2713 u64 *cookie) 2714 { 2715 struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev); 2716 struct ieee80211_local *local = sdata->local; 2717 int ret; 2718 2719 mutex_lock(&local->mtx); 2720 ret = ieee80211_start_roc_work(local, sdata, chan, 2721 duration, cookie, NULL, 2722 IEEE80211_ROC_TYPE_NORMAL); 2723 mutex_unlock(&local->mtx); 2724 2725 return ret; 2726 } 2727 2728 static int ieee80211_cancel_roc(struct ieee80211_local *local, 2729 u64 cookie, bool mgmt_tx) 2730 { 2731 struct ieee80211_roc_work *roc, *tmp, *found = NULL; 2732 int ret; 2733 2734 mutex_lock(&local->mtx); 2735 list_for_each_entry_safe(roc, tmp, &local->roc_list, list) { 2736 struct ieee80211_roc_work *dep, *tmp2; 2737 2738 list_for_each_entry_safe(dep, tmp2, &roc->dependents, list) { 2739 if (!mgmt_tx && dep->cookie != cookie) 2740 continue; 2741 else if (mgmt_tx && dep->mgmt_tx_cookie != cookie) 2742 continue; 2743 /* found dependent item -- just remove it */ 2744 list_del(&dep->list); 2745 mutex_unlock(&local->mtx); 2746 2747 ieee80211_roc_notify_destroy(dep, true); 2748 return 0; 2749 } 2750 2751 if (!mgmt_tx && roc->cookie != cookie) 2752 continue; 2753 else if (mgmt_tx && roc->mgmt_tx_cookie != cookie) 2754 continue; 2755 2756 found = roc; 2757 break; 2758 } 2759 2760 if (!found) { 2761 mutex_unlock(&local->mtx); 2762 return -ENOENT; 2763 } 2764 2765 /* 2766 * We found the item to cancel, so do that. Note that it 2767 * may have dependents, which we also cancel (and send 2768 * the expired signal for.) Not doing so would be quite 2769 * tricky here, but we may need to fix it later. 2770 */ 2771 2772 if (local->ops->remain_on_channel) { 2773 if (found->started) { 2774 ret = drv_cancel_remain_on_channel(local); 2775 if (WARN_ON_ONCE(ret)) { 2776 mutex_unlock(&local->mtx); 2777 return ret; 2778 } 2779 } 2780 2781 list_del(&found->list); 2782 2783 if (found->started) 2784 ieee80211_start_next_roc(local); 2785 mutex_unlock(&local->mtx); 2786 2787 ieee80211_roc_notify_destroy(found, true); 2788 } else { 2789 /* work may be pending so use it all the time */ 2790 found->abort = true; 2791 ieee80211_queue_delayed_work(&local->hw, &found->work, 0); 2792 2793 mutex_unlock(&local->mtx); 2794 2795 /* work will clean up etc */ 2796 flush_delayed_work(&found->work); 2797 WARN_ON(!found->to_be_freed); 2798 kfree(found); 2799 } 2800 2801 return 0; 2802 } 2803 2804 static int ieee80211_cancel_remain_on_channel(struct wiphy *wiphy, 2805 struct wireless_dev *wdev, 2806 u64 cookie) 2807 { 2808 struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev); 2809 struct ieee80211_local *local = sdata->local; 2810 2811 return ieee80211_cancel_roc(local, cookie, false); 2812 } 2813 2814 static int ieee80211_start_radar_detection(struct wiphy *wiphy, 2815 struct net_device *dev, 2816 struct cfg80211_chan_def *chandef, 2817 u32 cac_time_ms) 2818 { 2819 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 2820 struct ieee80211_local *local = sdata->local; 2821 int err; 2822 2823 mutex_lock(&local->mtx); 2824 if (!list_empty(&local->roc_list) || local->scanning) { 2825 err = -EBUSY; 2826 goto out_unlock; 2827 } 2828 2829 /* whatever, but channel contexts should not complain about that one */ 2830 sdata->smps_mode = IEEE80211_SMPS_OFF; 2831 sdata->needed_rx_chains = local->rx_chains; 2832 2833 err = ieee80211_vif_use_channel(sdata, chandef, 2834 IEEE80211_CHANCTX_SHARED); 2835 if (err) 2836 goto out_unlock; 2837 2838 ieee80211_queue_delayed_work(&sdata->local->hw, 2839 &sdata->dfs_cac_timer_work, 2840 msecs_to_jiffies(cac_time_ms)); 2841 2842 out_unlock: 2843 mutex_unlock(&local->mtx); 2844 return err; 2845 } 2846 2847 static struct cfg80211_beacon_data * 2848 cfg80211_beacon_dup(struct cfg80211_beacon_data *beacon) 2849 { 2850 struct cfg80211_beacon_data *new_beacon; 2851 u8 *pos; 2852 int len; 2853 2854 len = beacon->head_len + beacon->tail_len + beacon->beacon_ies_len + 2855 beacon->proberesp_ies_len + beacon->assocresp_ies_len + 2856 beacon->probe_resp_len; 2857 2858 new_beacon = kzalloc(sizeof(*new_beacon) + len, GFP_KERNEL); 2859 if (!new_beacon) 2860 return NULL; 2861 2862 pos = (u8 *)(new_beacon + 1); 2863 if (beacon->head_len) { 2864 new_beacon->head_len = beacon->head_len; 2865 new_beacon->head = pos; 2866 memcpy(pos, beacon->head, beacon->head_len); 2867 pos += beacon->head_len; 2868 } 2869 if (beacon->tail_len) { 2870 new_beacon->tail_len = beacon->tail_len; 2871 new_beacon->tail = pos; 2872 memcpy(pos, beacon->tail, beacon->tail_len); 2873 pos += beacon->tail_len; 2874 } 2875 if (beacon->beacon_ies_len) { 2876 new_beacon->beacon_ies_len = beacon->beacon_ies_len; 2877 new_beacon->beacon_ies = pos; 2878 memcpy(pos, beacon->beacon_ies, beacon->beacon_ies_len); 2879 pos += beacon->beacon_ies_len; 2880 } 2881 if (beacon->proberesp_ies_len) { 2882 new_beacon->proberesp_ies_len = beacon->proberesp_ies_len; 2883 new_beacon->proberesp_ies = pos; 2884 memcpy(pos, beacon->proberesp_ies, beacon->proberesp_ies_len); 2885 pos += beacon->proberesp_ies_len; 2886 } 2887 if (beacon->assocresp_ies_len) { 2888 new_beacon->assocresp_ies_len = beacon->assocresp_ies_len; 2889 new_beacon->assocresp_ies = pos; 2890 memcpy(pos, beacon->assocresp_ies, beacon->assocresp_ies_len); 2891 pos += beacon->assocresp_ies_len; 2892 } 2893 if (beacon->probe_resp_len) { 2894 new_beacon->probe_resp_len = beacon->probe_resp_len; 2895 beacon->probe_resp = pos; 2896 memcpy(pos, beacon->probe_resp, beacon->probe_resp_len); 2897 pos += beacon->probe_resp_len; 2898 } 2899 2900 return new_beacon; 2901 } 2902 2903 void ieee80211_csa_finish(struct ieee80211_vif *vif) 2904 { 2905 struct ieee80211_sub_if_data *sdata = vif_to_sdata(vif); 2906 2907 ieee80211_queue_work(&sdata->local->hw, 2908 &sdata->csa_finalize_work); 2909 } 2910 EXPORT_SYMBOL(ieee80211_csa_finish); 2911 2912 static int ieee80211_set_after_csa_beacon(struct ieee80211_sub_if_data *sdata, 2913 u32 *changed) 2914 { 2915 int err; 2916 2917 switch (sdata->vif.type) { 2918 case NL80211_IFTYPE_AP: 2919 err = ieee80211_assign_beacon(sdata, sdata->u.ap.next_beacon, 2920 NULL); 2921 kfree(sdata->u.ap.next_beacon); 2922 sdata->u.ap.next_beacon = NULL; 2923 2924 if (err < 0) 2925 return err; 2926 *changed |= err; 2927 break; 2928 case NL80211_IFTYPE_ADHOC: 2929 err = ieee80211_ibss_finish_csa(sdata); 2930 if (err < 0) 2931 return err; 2932 *changed |= err; 2933 break; 2934 #ifdef CONFIG_MAC80211_MESH 2935 case NL80211_IFTYPE_MESH_POINT: 2936 err = ieee80211_mesh_finish_csa(sdata); 2937 if (err < 0) 2938 return err; 2939 *changed |= err; 2940 break; 2941 #endif 2942 default: 2943 WARN_ON(1); 2944 return -EINVAL; 2945 } 2946 2947 return 0; 2948 } 2949 2950 static int __ieee80211_csa_finalize(struct ieee80211_sub_if_data *sdata) 2951 { 2952 struct ieee80211_local *local = sdata->local; 2953 u32 changed = 0; 2954 int err; 2955 2956 sdata_assert_lock(sdata); 2957 lockdep_assert_held(&local->mtx); 2958 lockdep_assert_held(&local->chanctx_mtx); 2959 2960 /* 2961 * using reservation isn't immediate as it may be deferred until later 2962 * with multi-vif. once reservation is complete it will re-schedule the 2963 * work with no reserved_chanctx so verify chandef to check if it 2964 * completed successfully 2965 */ 2966 2967 if (sdata->reserved_chanctx) { 2968 /* 2969 * with multi-vif csa driver may call ieee80211_csa_finish() 2970 * many times while waiting for other interfaces to use their 2971 * reservations 2972 */ 2973 if (sdata->reserved_ready) 2974 return 0; 2975 2976 return ieee80211_vif_use_reserved_context(sdata); 2977 } 2978 2979 if (!cfg80211_chandef_identical(&sdata->vif.bss_conf.chandef, 2980 &sdata->csa_chandef)) 2981 return -EINVAL; 2982 2983 sdata->vif.csa_active = false; 2984 2985 err = ieee80211_set_after_csa_beacon(sdata, &changed); 2986 if (err) 2987 return err; 2988 2989 ieee80211_bss_info_change_notify(sdata, changed); 2990 2991 if (sdata->csa_block_tx) { 2992 ieee80211_wake_vif_queues(local, sdata, 2993 IEEE80211_QUEUE_STOP_REASON_CSA); 2994 sdata->csa_block_tx = false; 2995 } 2996 2997 err = drv_post_channel_switch(sdata); 2998 if (err) 2999 return err; 3000 3001 cfg80211_ch_switch_notify(sdata->dev, &sdata->csa_chandef); 3002 3003 return 0; 3004 } 3005 3006 static void ieee80211_csa_finalize(struct ieee80211_sub_if_data *sdata) 3007 { 3008 if (__ieee80211_csa_finalize(sdata)) { 3009 sdata_info(sdata, "failed to finalize CSA, disconnecting\n"); 3010 cfg80211_stop_iface(sdata->local->hw.wiphy, &sdata->wdev, 3011 GFP_KERNEL); 3012 } 3013 } 3014 3015 void ieee80211_csa_finalize_work(struct work_struct *work) 3016 { 3017 struct ieee80211_sub_if_data *sdata = 3018 container_of(work, struct ieee80211_sub_if_data, 3019 csa_finalize_work); 3020 struct ieee80211_local *local = sdata->local; 3021 3022 sdata_lock(sdata); 3023 mutex_lock(&local->mtx); 3024 mutex_lock(&local->chanctx_mtx); 3025 3026 /* AP might have been stopped while waiting for the lock. */ 3027 if (!sdata->vif.csa_active) 3028 goto unlock; 3029 3030 if (!ieee80211_sdata_running(sdata)) 3031 goto unlock; 3032 3033 ieee80211_csa_finalize(sdata); 3034 3035 unlock: 3036 mutex_unlock(&local->chanctx_mtx); 3037 mutex_unlock(&local->mtx); 3038 sdata_unlock(sdata); 3039 } 3040 3041 static int ieee80211_set_csa_beacon(struct ieee80211_sub_if_data *sdata, 3042 struct cfg80211_csa_settings *params, 3043 u32 *changed) 3044 { 3045 struct ieee80211_csa_settings csa = {}; 3046 int err; 3047 3048 switch (sdata->vif.type) { 3049 case NL80211_IFTYPE_AP: 3050 sdata->u.ap.next_beacon = 3051 cfg80211_beacon_dup(¶ms->beacon_after); 3052 if (!sdata->u.ap.next_beacon) 3053 return -ENOMEM; 3054 3055 /* 3056 * With a count of 0, we don't have to wait for any 3057 * TBTT before switching, so complete the CSA 3058 * immediately. In theory, with a count == 1 we 3059 * should delay the switch until just before the next 3060 * TBTT, but that would complicate things so we switch 3061 * immediately too. If we would delay the switch 3062 * until the next TBTT, we would have to set the probe 3063 * response here. 3064 * 3065 * TODO: A channel switch with count <= 1 without 3066 * sending a CSA action frame is kind of useless, 3067 * because the clients won't know we're changing 3068 * channels. The action frame must be implemented 3069 * either here or in the userspace. 3070 */ 3071 if (params->count <= 1) 3072 break; 3073 3074 if ((params->n_counter_offsets_beacon > 3075 IEEE80211_MAX_CSA_COUNTERS_NUM) || 3076 (params->n_counter_offsets_presp > 3077 IEEE80211_MAX_CSA_COUNTERS_NUM)) 3078 return -EINVAL; 3079 3080 csa.counter_offsets_beacon = params->counter_offsets_beacon; 3081 csa.counter_offsets_presp = params->counter_offsets_presp; 3082 csa.n_counter_offsets_beacon = params->n_counter_offsets_beacon; 3083 csa.n_counter_offsets_presp = params->n_counter_offsets_presp; 3084 csa.count = params->count; 3085 3086 err = ieee80211_assign_beacon(sdata, ¶ms->beacon_csa, &csa); 3087 if (err < 0) { 3088 kfree(sdata->u.ap.next_beacon); 3089 return err; 3090 } 3091 *changed |= err; 3092 3093 break; 3094 case NL80211_IFTYPE_ADHOC: 3095 if (!sdata->vif.bss_conf.ibss_joined) 3096 return -EINVAL; 3097 3098 if (params->chandef.width != sdata->u.ibss.chandef.width) 3099 return -EINVAL; 3100 3101 switch (params->chandef.width) { 3102 case NL80211_CHAN_WIDTH_40: 3103 if (cfg80211_get_chandef_type(¶ms->chandef) != 3104 cfg80211_get_chandef_type(&sdata->u.ibss.chandef)) 3105 return -EINVAL; 3106 case NL80211_CHAN_WIDTH_5: 3107 case NL80211_CHAN_WIDTH_10: 3108 case NL80211_CHAN_WIDTH_20_NOHT: 3109 case NL80211_CHAN_WIDTH_20: 3110 break; 3111 default: 3112 return -EINVAL; 3113 } 3114 3115 /* changes into another band are not supported */ 3116 if (sdata->u.ibss.chandef.chan->band != 3117 params->chandef.chan->band) 3118 return -EINVAL; 3119 3120 /* see comments in the NL80211_IFTYPE_AP block */ 3121 if (params->count > 1) { 3122 err = ieee80211_ibss_csa_beacon(sdata, params); 3123 if (err < 0) 3124 return err; 3125 *changed |= err; 3126 } 3127 3128 ieee80211_send_action_csa(sdata, params); 3129 3130 break; 3131 #ifdef CONFIG_MAC80211_MESH 3132 case NL80211_IFTYPE_MESH_POINT: { 3133 struct ieee80211_if_mesh *ifmsh = &sdata->u.mesh; 3134 3135 if (params->chandef.width != sdata->vif.bss_conf.chandef.width) 3136 return -EINVAL; 3137 3138 /* changes into another band are not supported */ 3139 if (sdata->vif.bss_conf.chandef.chan->band != 3140 params->chandef.chan->band) 3141 return -EINVAL; 3142 3143 if (ifmsh->csa_role == IEEE80211_MESH_CSA_ROLE_NONE) { 3144 ifmsh->csa_role = IEEE80211_MESH_CSA_ROLE_INIT; 3145 if (!ifmsh->pre_value) 3146 ifmsh->pre_value = 1; 3147 else 3148 ifmsh->pre_value++; 3149 } 3150 3151 /* see comments in the NL80211_IFTYPE_AP block */ 3152 if (params->count > 1) { 3153 err = ieee80211_mesh_csa_beacon(sdata, params); 3154 if (err < 0) { 3155 ifmsh->csa_role = IEEE80211_MESH_CSA_ROLE_NONE; 3156 return err; 3157 } 3158 *changed |= err; 3159 } 3160 3161 if (ifmsh->csa_role == IEEE80211_MESH_CSA_ROLE_INIT) 3162 ieee80211_send_action_csa(sdata, params); 3163 3164 break; 3165 } 3166 #endif 3167 default: 3168 return -EOPNOTSUPP; 3169 } 3170 3171 return 0; 3172 } 3173 3174 static int 3175 __ieee80211_channel_switch(struct wiphy *wiphy, struct net_device *dev, 3176 struct cfg80211_csa_settings *params) 3177 { 3178 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 3179 struct ieee80211_local *local = sdata->local; 3180 struct ieee80211_channel_switch ch_switch; 3181 struct ieee80211_chanctx_conf *conf; 3182 struct ieee80211_chanctx *chanctx; 3183 u32 changed = 0; 3184 int err; 3185 3186 sdata_assert_lock(sdata); 3187 lockdep_assert_held(&local->mtx); 3188 3189 if (!list_empty(&local->roc_list) || local->scanning) 3190 return -EBUSY; 3191 3192 if (sdata->wdev.cac_started) 3193 return -EBUSY; 3194 3195 if (cfg80211_chandef_identical(¶ms->chandef, 3196 &sdata->vif.bss_conf.chandef)) 3197 return -EINVAL; 3198 3199 /* don't allow another channel switch if one is already active. */ 3200 if (sdata->vif.csa_active) 3201 return -EBUSY; 3202 3203 mutex_lock(&local->chanctx_mtx); 3204 conf = rcu_dereference_protected(sdata->vif.chanctx_conf, 3205 lockdep_is_held(&local->chanctx_mtx)); 3206 if (!conf) { 3207 err = -EBUSY; 3208 goto out; 3209 } 3210 3211 chanctx = container_of(conf, struct ieee80211_chanctx, conf); 3212 if (!chanctx) { 3213 err = -EBUSY; 3214 goto out; 3215 } 3216 3217 ch_switch.timestamp = 0; 3218 ch_switch.device_timestamp = 0; 3219 ch_switch.block_tx = params->block_tx; 3220 ch_switch.chandef = params->chandef; 3221 ch_switch.count = params->count; 3222 3223 err = drv_pre_channel_switch(sdata, &ch_switch); 3224 if (err) 3225 goto out; 3226 3227 err = ieee80211_vif_reserve_chanctx(sdata, ¶ms->chandef, 3228 chanctx->mode, 3229 params->radar_required); 3230 if (err) 3231 goto out; 3232 3233 /* if reservation is invalid then this will fail */ 3234 err = ieee80211_check_combinations(sdata, NULL, chanctx->mode, 0); 3235 if (err) { 3236 ieee80211_vif_unreserve_chanctx(sdata); 3237 goto out; 3238 } 3239 3240 err = ieee80211_set_csa_beacon(sdata, params, &changed); 3241 if (err) { 3242 ieee80211_vif_unreserve_chanctx(sdata); 3243 goto out; 3244 } 3245 3246 sdata->csa_chandef = params->chandef; 3247 sdata->csa_block_tx = params->block_tx; 3248 sdata->vif.csa_active = true; 3249 3250 if (sdata->csa_block_tx) 3251 ieee80211_stop_vif_queues(local, sdata, 3252 IEEE80211_QUEUE_STOP_REASON_CSA); 3253 3254 cfg80211_ch_switch_started_notify(sdata->dev, &sdata->csa_chandef, 3255 params->count); 3256 3257 if (changed) { 3258 ieee80211_bss_info_change_notify(sdata, changed); 3259 drv_channel_switch_beacon(sdata, ¶ms->chandef); 3260 } else { 3261 /* if the beacon didn't change, we can finalize immediately */ 3262 ieee80211_csa_finalize(sdata); 3263 } 3264 3265 out: 3266 mutex_unlock(&local->chanctx_mtx); 3267 return err; 3268 } 3269 3270 int ieee80211_channel_switch(struct wiphy *wiphy, struct net_device *dev, 3271 struct cfg80211_csa_settings *params) 3272 { 3273 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 3274 struct ieee80211_local *local = sdata->local; 3275 int err; 3276 3277 mutex_lock(&local->mtx); 3278 err = __ieee80211_channel_switch(wiphy, dev, params); 3279 mutex_unlock(&local->mtx); 3280 3281 return err; 3282 } 3283 3284 static int ieee80211_mgmt_tx(struct wiphy *wiphy, struct wireless_dev *wdev, 3285 struct cfg80211_mgmt_tx_params *params, 3286 u64 *cookie) 3287 { 3288 struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev); 3289 struct ieee80211_local *local = sdata->local; 3290 struct sk_buff *skb; 3291 struct sta_info *sta; 3292 const struct ieee80211_mgmt *mgmt = (void *)params->buf; 3293 bool need_offchan = false; 3294 u32 flags; 3295 int ret; 3296 u8 *data; 3297 3298 if (params->dont_wait_for_ack) 3299 flags = IEEE80211_TX_CTL_NO_ACK; 3300 else 3301 flags = IEEE80211_TX_INTFL_NL80211_FRAME_TX | 3302 IEEE80211_TX_CTL_REQ_TX_STATUS; 3303 3304 if (params->no_cck) 3305 flags |= IEEE80211_TX_CTL_NO_CCK_RATE; 3306 3307 switch (sdata->vif.type) { 3308 case NL80211_IFTYPE_ADHOC: 3309 if (!sdata->vif.bss_conf.ibss_joined) 3310 need_offchan = true; 3311 /* fall through */ 3312 #ifdef CONFIG_MAC80211_MESH 3313 case NL80211_IFTYPE_MESH_POINT: 3314 if (ieee80211_vif_is_mesh(&sdata->vif) && 3315 !sdata->u.mesh.mesh_id_len) 3316 need_offchan = true; 3317 /* fall through */ 3318 #endif 3319 case NL80211_IFTYPE_AP: 3320 case NL80211_IFTYPE_AP_VLAN: 3321 case NL80211_IFTYPE_P2P_GO: 3322 if (sdata->vif.type != NL80211_IFTYPE_ADHOC && 3323 !ieee80211_vif_is_mesh(&sdata->vif) && 3324 !rcu_access_pointer(sdata->bss->beacon)) 3325 need_offchan = true; 3326 if (!ieee80211_is_action(mgmt->frame_control) || 3327 mgmt->u.action.category == WLAN_CATEGORY_PUBLIC || 3328 mgmt->u.action.category == WLAN_CATEGORY_SELF_PROTECTED || 3329 mgmt->u.action.category == WLAN_CATEGORY_SPECTRUM_MGMT) 3330 break; 3331 rcu_read_lock(); 3332 sta = sta_info_get(sdata, mgmt->da); 3333 rcu_read_unlock(); 3334 if (!sta) 3335 return -ENOLINK; 3336 break; 3337 case NL80211_IFTYPE_STATION: 3338 case NL80211_IFTYPE_P2P_CLIENT: 3339 if (!sdata->u.mgd.associated) 3340 need_offchan = true; 3341 break; 3342 case NL80211_IFTYPE_P2P_DEVICE: 3343 need_offchan = true; 3344 break; 3345 default: 3346 return -EOPNOTSUPP; 3347 } 3348 3349 /* configurations requiring offchan cannot work if no channel has been 3350 * specified 3351 */ 3352 if (need_offchan && !params->chan) 3353 return -EINVAL; 3354 3355 mutex_lock(&local->mtx); 3356 3357 /* Check if the operating channel is the requested channel */ 3358 if (!need_offchan) { 3359 struct ieee80211_chanctx_conf *chanctx_conf; 3360 3361 rcu_read_lock(); 3362 chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf); 3363 3364 if (chanctx_conf) { 3365 need_offchan = params->chan && 3366 (params->chan != 3367 chanctx_conf->def.chan); 3368 } else if (!params->chan) { 3369 ret = -EINVAL; 3370 rcu_read_unlock(); 3371 goto out_unlock; 3372 } else { 3373 need_offchan = true; 3374 } 3375 rcu_read_unlock(); 3376 } 3377 3378 if (need_offchan && !params->offchan) { 3379 ret = -EBUSY; 3380 goto out_unlock; 3381 } 3382 3383 skb = dev_alloc_skb(local->hw.extra_tx_headroom + params->len); 3384 if (!skb) { 3385 ret = -ENOMEM; 3386 goto out_unlock; 3387 } 3388 skb_reserve(skb, local->hw.extra_tx_headroom); 3389 3390 data = skb_put(skb, params->len); 3391 memcpy(data, params->buf, params->len); 3392 3393 /* Update CSA counters */ 3394 if (sdata->vif.csa_active && 3395 (sdata->vif.type == NL80211_IFTYPE_AP || 3396 sdata->vif.type == NL80211_IFTYPE_ADHOC) && 3397 params->n_csa_offsets) { 3398 int i; 3399 struct beacon_data *beacon = NULL; 3400 3401 rcu_read_lock(); 3402 3403 if (sdata->vif.type == NL80211_IFTYPE_AP) 3404 beacon = rcu_dereference(sdata->u.ap.beacon); 3405 else if (sdata->vif.type == NL80211_IFTYPE_ADHOC) 3406 beacon = rcu_dereference(sdata->u.ibss.presp); 3407 else if (ieee80211_vif_is_mesh(&sdata->vif)) 3408 beacon = rcu_dereference(sdata->u.mesh.beacon); 3409 3410 if (beacon) 3411 for (i = 0; i < params->n_csa_offsets; i++) 3412 data[params->csa_offsets[i]] = 3413 beacon->csa_current_counter; 3414 3415 rcu_read_unlock(); 3416 } 3417 3418 IEEE80211_SKB_CB(skb)->flags = flags; 3419 3420 skb->dev = sdata->dev; 3421 3422 if (!need_offchan) { 3423 *cookie = (unsigned long) skb; 3424 ieee80211_tx_skb(sdata, skb); 3425 ret = 0; 3426 goto out_unlock; 3427 } 3428 3429 IEEE80211_SKB_CB(skb)->flags |= IEEE80211_TX_CTL_TX_OFFCHAN | 3430 IEEE80211_TX_INTFL_OFFCHAN_TX_OK; 3431 if (local->hw.flags & IEEE80211_HW_QUEUE_CONTROL) 3432 IEEE80211_SKB_CB(skb)->hw_queue = 3433 local->hw.offchannel_tx_hw_queue; 3434 3435 /* This will handle all kinds of coalescing and immediate TX */ 3436 ret = ieee80211_start_roc_work(local, sdata, params->chan, 3437 params->wait, cookie, skb, 3438 IEEE80211_ROC_TYPE_MGMT_TX); 3439 if (ret) 3440 kfree_skb(skb); 3441 out_unlock: 3442 mutex_unlock(&local->mtx); 3443 return ret; 3444 } 3445 3446 static int ieee80211_mgmt_tx_cancel_wait(struct wiphy *wiphy, 3447 struct wireless_dev *wdev, 3448 u64 cookie) 3449 { 3450 struct ieee80211_local *local = wiphy_priv(wiphy); 3451 3452 return ieee80211_cancel_roc(local, cookie, true); 3453 } 3454 3455 static void ieee80211_mgmt_frame_register(struct wiphy *wiphy, 3456 struct wireless_dev *wdev, 3457 u16 frame_type, bool reg) 3458 { 3459 struct ieee80211_local *local = wiphy_priv(wiphy); 3460 3461 switch (frame_type) { 3462 case IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_PROBE_REQ: 3463 if (reg) 3464 local->probe_req_reg++; 3465 else 3466 local->probe_req_reg--; 3467 3468 if (!local->open_count) 3469 break; 3470 3471 ieee80211_queue_work(&local->hw, &local->reconfig_filter); 3472 break; 3473 default: 3474 break; 3475 } 3476 } 3477 3478 static int ieee80211_set_antenna(struct wiphy *wiphy, u32 tx_ant, u32 rx_ant) 3479 { 3480 struct ieee80211_local *local = wiphy_priv(wiphy); 3481 3482 if (local->started) 3483 return -EOPNOTSUPP; 3484 3485 return drv_set_antenna(local, tx_ant, rx_ant); 3486 } 3487 3488 static int ieee80211_get_antenna(struct wiphy *wiphy, u32 *tx_ant, u32 *rx_ant) 3489 { 3490 struct ieee80211_local *local = wiphy_priv(wiphy); 3491 3492 return drv_get_antenna(local, tx_ant, rx_ant); 3493 } 3494 3495 static int ieee80211_set_rekey_data(struct wiphy *wiphy, 3496 struct net_device *dev, 3497 struct cfg80211_gtk_rekey_data *data) 3498 { 3499 struct ieee80211_local *local = wiphy_priv(wiphy); 3500 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 3501 3502 if (!local->ops->set_rekey_data) 3503 return -EOPNOTSUPP; 3504 3505 drv_set_rekey_data(local, sdata, data); 3506 3507 return 0; 3508 } 3509 3510 static int ieee80211_probe_client(struct wiphy *wiphy, struct net_device *dev, 3511 const u8 *peer, u64 *cookie) 3512 { 3513 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 3514 struct ieee80211_local *local = sdata->local; 3515 struct ieee80211_qos_hdr *nullfunc; 3516 struct sk_buff *skb; 3517 int size = sizeof(*nullfunc); 3518 __le16 fc; 3519 bool qos; 3520 struct ieee80211_tx_info *info; 3521 struct sta_info *sta; 3522 struct ieee80211_chanctx_conf *chanctx_conf; 3523 enum ieee80211_band band; 3524 3525 rcu_read_lock(); 3526 chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf); 3527 if (WARN_ON(!chanctx_conf)) { 3528 rcu_read_unlock(); 3529 return -EINVAL; 3530 } 3531 band = chanctx_conf->def.chan->band; 3532 sta = sta_info_get_bss(sdata, peer); 3533 if (sta) { 3534 qos = sta->sta.wme; 3535 } else { 3536 rcu_read_unlock(); 3537 return -ENOLINK; 3538 } 3539 3540 if (qos) { 3541 fc = cpu_to_le16(IEEE80211_FTYPE_DATA | 3542 IEEE80211_STYPE_QOS_NULLFUNC | 3543 IEEE80211_FCTL_FROMDS); 3544 } else { 3545 size -= 2; 3546 fc = cpu_to_le16(IEEE80211_FTYPE_DATA | 3547 IEEE80211_STYPE_NULLFUNC | 3548 IEEE80211_FCTL_FROMDS); 3549 } 3550 3551 skb = dev_alloc_skb(local->hw.extra_tx_headroom + size); 3552 if (!skb) { 3553 rcu_read_unlock(); 3554 return -ENOMEM; 3555 } 3556 3557 skb->dev = dev; 3558 3559 skb_reserve(skb, local->hw.extra_tx_headroom); 3560 3561 nullfunc = (void *) skb_put(skb, size); 3562 nullfunc->frame_control = fc; 3563 nullfunc->duration_id = 0; 3564 memcpy(nullfunc->addr1, sta->sta.addr, ETH_ALEN); 3565 memcpy(nullfunc->addr2, sdata->vif.addr, ETH_ALEN); 3566 memcpy(nullfunc->addr3, sdata->vif.addr, ETH_ALEN); 3567 nullfunc->seq_ctrl = 0; 3568 3569 info = IEEE80211_SKB_CB(skb); 3570 3571 info->flags |= IEEE80211_TX_CTL_REQ_TX_STATUS | 3572 IEEE80211_TX_INTFL_NL80211_FRAME_TX; 3573 info->band = band; 3574 3575 skb_set_queue_mapping(skb, IEEE80211_AC_VO); 3576 skb->priority = 7; 3577 if (qos) 3578 nullfunc->qos_ctrl = cpu_to_le16(7); 3579 3580 local_bh_disable(); 3581 ieee80211_xmit(sdata, sta, skb); 3582 local_bh_enable(); 3583 rcu_read_unlock(); 3584 3585 *cookie = (unsigned long) skb; 3586 return 0; 3587 } 3588 3589 static int ieee80211_cfg_get_channel(struct wiphy *wiphy, 3590 struct wireless_dev *wdev, 3591 struct cfg80211_chan_def *chandef) 3592 { 3593 struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev); 3594 struct ieee80211_local *local = wiphy_priv(wiphy); 3595 struct ieee80211_chanctx_conf *chanctx_conf; 3596 int ret = -ENODATA; 3597 3598 rcu_read_lock(); 3599 chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf); 3600 if (chanctx_conf) { 3601 *chandef = sdata->vif.bss_conf.chandef; 3602 ret = 0; 3603 } else if (local->open_count > 0 && 3604 local->open_count == local->monitors && 3605 sdata->vif.type == NL80211_IFTYPE_MONITOR) { 3606 if (local->use_chanctx) 3607 *chandef = local->monitor_chandef; 3608 else 3609 *chandef = local->_oper_chandef; 3610 ret = 0; 3611 } 3612 rcu_read_unlock(); 3613 3614 return ret; 3615 } 3616 3617 #ifdef CONFIG_PM 3618 static void ieee80211_set_wakeup(struct wiphy *wiphy, bool enabled) 3619 { 3620 drv_set_wakeup(wiphy_priv(wiphy), enabled); 3621 } 3622 #endif 3623 3624 static int ieee80211_set_qos_map(struct wiphy *wiphy, 3625 struct net_device *dev, 3626 struct cfg80211_qos_map *qos_map) 3627 { 3628 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 3629 struct mac80211_qos_map *new_qos_map, *old_qos_map; 3630 3631 if (qos_map) { 3632 new_qos_map = kzalloc(sizeof(*new_qos_map), GFP_KERNEL); 3633 if (!new_qos_map) 3634 return -ENOMEM; 3635 memcpy(&new_qos_map->qos_map, qos_map, sizeof(*qos_map)); 3636 } else { 3637 /* A NULL qos_map was passed to disable QoS mapping */ 3638 new_qos_map = NULL; 3639 } 3640 3641 old_qos_map = sdata_dereference(sdata->qos_map, sdata); 3642 rcu_assign_pointer(sdata->qos_map, new_qos_map); 3643 if (old_qos_map) 3644 kfree_rcu(old_qos_map, rcu_head); 3645 3646 return 0; 3647 } 3648 3649 static int ieee80211_set_ap_chanwidth(struct wiphy *wiphy, 3650 struct net_device *dev, 3651 struct cfg80211_chan_def *chandef) 3652 { 3653 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 3654 int ret; 3655 u32 changed = 0; 3656 3657 ret = ieee80211_vif_change_bandwidth(sdata, chandef, &changed); 3658 if (ret == 0) 3659 ieee80211_bss_info_change_notify(sdata, changed); 3660 3661 return ret; 3662 } 3663 3664 static int ieee80211_add_tx_ts(struct wiphy *wiphy, struct net_device *dev, 3665 u8 tsid, const u8 *peer, u8 up, 3666 u16 admitted_time) 3667 { 3668 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 3669 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; 3670 int ac = ieee802_1d_to_ac[up]; 3671 3672 if (sdata->vif.type != NL80211_IFTYPE_STATION) 3673 return -EOPNOTSUPP; 3674 3675 if (!(sdata->wmm_acm & BIT(up))) 3676 return -EINVAL; 3677 3678 if (ifmgd->tx_tspec[ac].admitted_time) 3679 return -EBUSY; 3680 3681 if (admitted_time) { 3682 ifmgd->tx_tspec[ac].admitted_time = 32 * admitted_time; 3683 ifmgd->tx_tspec[ac].tsid = tsid; 3684 ifmgd->tx_tspec[ac].up = up; 3685 } 3686 3687 return 0; 3688 } 3689 3690 static int ieee80211_del_tx_ts(struct wiphy *wiphy, struct net_device *dev, 3691 u8 tsid, const u8 *peer) 3692 { 3693 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 3694 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; 3695 struct ieee80211_local *local = wiphy_priv(wiphy); 3696 int ac; 3697 3698 for (ac = 0; ac < IEEE80211_NUM_ACS; ac++) { 3699 struct ieee80211_sta_tx_tspec *tx_tspec = &ifmgd->tx_tspec[ac]; 3700 3701 /* skip unused entries */ 3702 if (!tx_tspec->admitted_time) 3703 continue; 3704 3705 if (tx_tspec->tsid != tsid) 3706 continue; 3707 3708 /* due to this new packets will be reassigned to non-ACM ACs */ 3709 tx_tspec->up = -1; 3710 3711 /* Make sure that all packets have been sent to avoid to 3712 * restore the QoS params on packets that are still on the 3713 * queues. 3714 */ 3715 synchronize_net(); 3716 ieee80211_flush_queues(local, sdata, false); 3717 3718 /* restore the normal QoS parameters 3719 * (unconditionally to avoid races) 3720 */ 3721 tx_tspec->action = TX_TSPEC_ACTION_STOP_DOWNGRADE; 3722 tx_tspec->downgraded = false; 3723 ieee80211_sta_handle_tspec_ac_params(sdata); 3724 3725 /* finally clear all the data */ 3726 memset(tx_tspec, 0, sizeof(*tx_tspec)); 3727 3728 return 0; 3729 } 3730 3731 return -ENOENT; 3732 } 3733 3734 const struct cfg80211_ops mac80211_config_ops = { 3735 .add_virtual_intf = ieee80211_add_iface, 3736 .del_virtual_intf = ieee80211_del_iface, 3737 .change_virtual_intf = ieee80211_change_iface, 3738 .start_p2p_device = ieee80211_start_p2p_device, 3739 .stop_p2p_device = ieee80211_stop_p2p_device, 3740 .add_key = ieee80211_add_key, 3741 .del_key = ieee80211_del_key, 3742 .get_key = ieee80211_get_key, 3743 .set_default_key = ieee80211_config_default_key, 3744 .set_default_mgmt_key = ieee80211_config_default_mgmt_key, 3745 .start_ap = ieee80211_start_ap, 3746 .change_beacon = ieee80211_change_beacon, 3747 .stop_ap = ieee80211_stop_ap, 3748 .add_station = ieee80211_add_station, 3749 .del_station = ieee80211_del_station, 3750 .change_station = ieee80211_change_station, 3751 .get_station = ieee80211_get_station, 3752 .dump_station = ieee80211_dump_station, 3753 .dump_survey = ieee80211_dump_survey, 3754 #ifdef CONFIG_MAC80211_MESH 3755 .add_mpath = ieee80211_add_mpath, 3756 .del_mpath = ieee80211_del_mpath, 3757 .change_mpath = ieee80211_change_mpath, 3758 .get_mpath = ieee80211_get_mpath, 3759 .dump_mpath = ieee80211_dump_mpath, 3760 .get_mpp = ieee80211_get_mpp, 3761 .dump_mpp = ieee80211_dump_mpp, 3762 .update_mesh_config = ieee80211_update_mesh_config, 3763 .get_mesh_config = ieee80211_get_mesh_config, 3764 .join_mesh = ieee80211_join_mesh, 3765 .leave_mesh = ieee80211_leave_mesh, 3766 #endif 3767 .join_ocb = ieee80211_join_ocb, 3768 .leave_ocb = ieee80211_leave_ocb, 3769 .change_bss = ieee80211_change_bss, 3770 .set_txq_params = ieee80211_set_txq_params, 3771 .set_monitor_channel = ieee80211_set_monitor_channel, 3772 .suspend = ieee80211_suspend, 3773 .resume = ieee80211_resume, 3774 .scan = ieee80211_scan, 3775 .sched_scan_start = ieee80211_sched_scan_start, 3776 .sched_scan_stop = ieee80211_sched_scan_stop, 3777 .auth = ieee80211_auth, 3778 .assoc = ieee80211_assoc, 3779 .deauth = ieee80211_deauth, 3780 .disassoc = ieee80211_disassoc, 3781 .join_ibss = ieee80211_join_ibss, 3782 .leave_ibss = ieee80211_leave_ibss, 3783 .set_mcast_rate = ieee80211_set_mcast_rate, 3784 .set_wiphy_params = ieee80211_set_wiphy_params, 3785 .set_tx_power = ieee80211_set_tx_power, 3786 .get_tx_power = ieee80211_get_tx_power, 3787 .set_wds_peer = ieee80211_set_wds_peer, 3788 .rfkill_poll = ieee80211_rfkill_poll, 3789 CFG80211_TESTMODE_CMD(ieee80211_testmode_cmd) 3790 CFG80211_TESTMODE_DUMP(ieee80211_testmode_dump) 3791 .set_power_mgmt = ieee80211_set_power_mgmt, 3792 .set_bitrate_mask = ieee80211_set_bitrate_mask, 3793 .remain_on_channel = ieee80211_remain_on_channel, 3794 .cancel_remain_on_channel = ieee80211_cancel_remain_on_channel, 3795 .mgmt_tx = ieee80211_mgmt_tx, 3796 .mgmt_tx_cancel_wait = ieee80211_mgmt_tx_cancel_wait, 3797 .set_cqm_rssi_config = ieee80211_set_cqm_rssi_config, 3798 .mgmt_frame_register = ieee80211_mgmt_frame_register, 3799 .set_antenna = ieee80211_set_antenna, 3800 .get_antenna = ieee80211_get_antenna, 3801 .set_rekey_data = ieee80211_set_rekey_data, 3802 .tdls_oper = ieee80211_tdls_oper, 3803 .tdls_mgmt = ieee80211_tdls_mgmt, 3804 .tdls_channel_switch = ieee80211_tdls_channel_switch, 3805 .tdls_cancel_channel_switch = ieee80211_tdls_cancel_channel_switch, 3806 .probe_client = ieee80211_probe_client, 3807 .set_noack_map = ieee80211_set_noack_map, 3808 #ifdef CONFIG_PM 3809 .set_wakeup = ieee80211_set_wakeup, 3810 #endif 3811 .get_channel = ieee80211_cfg_get_channel, 3812 .start_radar_detection = ieee80211_start_radar_detection, 3813 .channel_switch = ieee80211_channel_switch, 3814 .set_qos_map = ieee80211_set_qos_map, 3815 .set_ap_chanwidth = ieee80211_set_ap_chanwidth, 3816 .add_tx_ts = ieee80211_add_tx_ts, 3817 .del_tx_ts = ieee80211_del_tx_ts, 3818 }; 3819