1 /* 2 * mac80211 configuration hooks for cfg80211 3 * 4 * Copyright 2006-2010 Johannes Berg <johannes@sipsolutions.net> 5 * Copyright 2013-2015 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 "rate.h" 21 #include "mesh.h" 22 #include "wme.h" 23 24 static struct wireless_dev *ieee80211_add_iface(struct wiphy *wiphy, 25 const char *name, 26 unsigned char name_assign_type, 27 enum nl80211_iftype type, 28 u32 *flags, 29 struct vif_params *params) 30 { 31 struct ieee80211_local *local = wiphy_priv(wiphy); 32 struct wireless_dev *wdev; 33 struct ieee80211_sub_if_data *sdata; 34 int err; 35 36 err = ieee80211_if_add(local, name, name_assign_type, &wdev, type, params); 37 if (err) 38 return ERR_PTR(err); 39 40 if (type == NL80211_IFTYPE_MONITOR && flags) { 41 sdata = IEEE80211_WDEV_TO_SUB_IF(wdev); 42 sdata->u.mntr_flags = *flags; 43 } 44 45 return wdev; 46 } 47 48 static int ieee80211_del_iface(struct wiphy *wiphy, struct wireless_dev *wdev) 49 { 50 ieee80211_if_remove(IEEE80211_WDEV_TO_SUB_IF(wdev)); 51 52 return 0; 53 } 54 55 static int ieee80211_change_iface(struct wiphy *wiphy, 56 struct net_device *dev, 57 enum nl80211_iftype type, u32 *flags, 58 struct vif_params *params) 59 { 60 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 61 int ret; 62 63 ret = ieee80211_if_change_type(sdata, type); 64 if (ret) 65 return ret; 66 67 if (type == NL80211_IFTYPE_AP_VLAN && 68 params && params->use_4addr == 0) 69 RCU_INIT_POINTER(sdata->u.vlan.sta, NULL); 70 else if (type == NL80211_IFTYPE_STATION && 71 params && params->use_4addr >= 0) 72 sdata->u.mgd.use_4addr = params->use_4addr; 73 74 if (sdata->vif.type == NL80211_IFTYPE_MONITOR && flags) { 75 struct ieee80211_local *local = sdata->local; 76 77 if (ieee80211_sdata_running(sdata)) { 78 u32 mask = MONITOR_FLAG_COOK_FRAMES | 79 MONITOR_FLAG_ACTIVE; 80 81 /* 82 * Prohibit MONITOR_FLAG_COOK_FRAMES and 83 * MONITOR_FLAG_ACTIVE to be changed while the 84 * interface is up. 85 * Else we would need to add a lot of cruft 86 * to update everything: 87 * cooked_mntrs, monitor and all fif_* counters 88 * reconfigure hardware 89 */ 90 if ((*flags & mask) != (sdata->u.mntr_flags & mask)) 91 return -EBUSY; 92 93 ieee80211_adjust_monitor_flags(sdata, -1); 94 sdata->u.mntr_flags = *flags; 95 ieee80211_adjust_monitor_flags(sdata, 1); 96 97 ieee80211_configure_filter(local); 98 } else { 99 /* 100 * Because the interface is down, ieee80211_do_stop 101 * and ieee80211_do_open take care of "everything" 102 * mentioned in the comment above. 103 */ 104 sdata->u.mntr_flags = *flags; 105 } 106 } 107 108 return 0; 109 } 110 111 static int ieee80211_start_p2p_device(struct wiphy *wiphy, 112 struct wireless_dev *wdev) 113 { 114 struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev); 115 int ret; 116 117 mutex_lock(&sdata->local->chanctx_mtx); 118 ret = ieee80211_check_combinations(sdata, NULL, 0, 0); 119 mutex_unlock(&sdata->local->chanctx_mtx); 120 if (ret < 0) 121 return ret; 122 123 return ieee80211_do_open(wdev, true); 124 } 125 126 static void ieee80211_stop_p2p_device(struct wiphy *wiphy, 127 struct wireless_dev *wdev) 128 { 129 ieee80211_sdata_stop(IEEE80211_WDEV_TO_SUB_IF(wdev)); 130 } 131 132 static int ieee80211_set_noack_map(struct wiphy *wiphy, 133 struct net_device *dev, 134 u16 noack_map) 135 { 136 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 137 138 sdata->noack_map = noack_map; 139 140 ieee80211_check_fast_xmit_iface(sdata); 141 142 return 0; 143 } 144 145 static int ieee80211_add_key(struct wiphy *wiphy, struct net_device *dev, 146 u8 key_idx, bool pairwise, const u8 *mac_addr, 147 struct key_params *params) 148 { 149 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 150 struct ieee80211_local *local = sdata->local; 151 struct sta_info *sta = NULL; 152 const struct ieee80211_cipher_scheme *cs = NULL; 153 struct ieee80211_key *key; 154 int err; 155 156 if (!ieee80211_sdata_running(sdata)) 157 return -ENETDOWN; 158 159 /* reject WEP and TKIP keys if WEP failed to initialize */ 160 switch (params->cipher) { 161 case WLAN_CIPHER_SUITE_WEP40: 162 case WLAN_CIPHER_SUITE_TKIP: 163 case WLAN_CIPHER_SUITE_WEP104: 164 if (IS_ERR(local->wep_tx_tfm)) 165 return -EINVAL; 166 break; 167 case WLAN_CIPHER_SUITE_CCMP: 168 case WLAN_CIPHER_SUITE_CCMP_256: 169 case WLAN_CIPHER_SUITE_AES_CMAC: 170 case WLAN_CIPHER_SUITE_BIP_CMAC_256: 171 case WLAN_CIPHER_SUITE_BIP_GMAC_128: 172 case WLAN_CIPHER_SUITE_BIP_GMAC_256: 173 case WLAN_CIPHER_SUITE_GCMP: 174 case WLAN_CIPHER_SUITE_GCMP_256: 175 break; 176 default: 177 cs = ieee80211_cs_get(local, params->cipher, sdata->vif.type); 178 break; 179 } 180 181 key = ieee80211_key_alloc(params->cipher, key_idx, params->key_len, 182 params->key, params->seq_len, params->seq, 183 cs); 184 if (IS_ERR(key)) 185 return PTR_ERR(key); 186 187 if (pairwise) 188 key->conf.flags |= IEEE80211_KEY_FLAG_PAIRWISE; 189 190 mutex_lock(&local->sta_mtx); 191 192 if (mac_addr) { 193 if (ieee80211_vif_is_mesh(&sdata->vif)) 194 sta = sta_info_get(sdata, mac_addr); 195 else 196 sta = sta_info_get_bss(sdata, mac_addr); 197 /* 198 * The ASSOC test makes sure the driver is ready to 199 * receive the key. When wpa_supplicant has roamed 200 * using FT, it attempts to set the key before 201 * association has completed, this rejects that attempt 202 * so it will set the key again after association. 203 * 204 * TODO: accept the key if we have a station entry and 205 * add it to the device after the station. 206 */ 207 if (!sta || !test_sta_flag(sta, WLAN_STA_ASSOC)) { 208 ieee80211_key_free_unused(key); 209 err = -ENOENT; 210 goto out_unlock; 211 } 212 } 213 214 switch (sdata->vif.type) { 215 case NL80211_IFTYPE_STATION: 216 if (sdata->u.mgd.mfp != IEEE80211_MFP_DISABLED) 217 key->conf.flags |= IEEE80211_KEY_FLAG_RX_MGMT; 218 break; 219 case NL80211_IFTYPE_AP: 220 case NL80211_IFTYPE_AP_VLAN: 221 /* Keys without a station are used for TX only */ 222 if (key->sta && test_sta_flag(key->sta, WLAN_STA_MFP)) 223 key->conf.flags |= IEEE80211_KEY_FLAG_RX_MGMT; 224 break; 225 case NL80211_IFTYPE_ADHOC: 226 /* no MFP (yet) */ 227 break; 228 case NL80211_IFTYPE_MESH_POINT: 229 #ifdef CONFIG_MAC80211_MESH 230 if (sdata->u.mesh.security != IEEE80211_MESH_SEC_NONE) 231 key->conf.flags |= IEEE80211_KEY_FLAG_RX_MGMT; 232 break; 233 #endif 234 case NL80211_IFTYPE_WDS: 235 case NL80211_IFTYPE_MONITOR: 236 case NL80211_IFTYPE_P2P_DEVICE: 237 case NL80211_IFTYPE_UNSPECIFIED: 238 case NUM_NL80211_IFTYPES: 239 case NL80211_IFTYPE_P2P_CLIENT: 240 case NL80211_IFTYPE_P2P_GO: 241 case NL80211_IFTYPE_OCB: 242 /* shouldn't happen */ 243 WARN_ON_ONCE(1); 244 break; 245 } 246 247 if (sta) 248 sta->cipher_scheme = cs; 249 250 err = ieee80211_key_link(key, sdata, sta); 251 252 out_unlock: 253 mutex_unlock(&local->sta_mtx); 254 255 return err; 256 } 257 258 static int ieee80211_del_key(struct wiphy *wiphy, struct net_device *dev, 259 u8 key_idx, bool pairwise, const u8 *mac_addr) 260 { 261 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 262 struct ieee80211_local *local = sdata->local; 263 struct sta_info *sta; 264 struct ieee80211_key *key = NULL; 265 int ret; 266 267 mutex_lock(&local->sta_mtx); 268 mutex_lock(&local->key_mtx); 269 270 if (mac_addr) { 271 ret = -ENOENT; 272 273 sta = sta_info_get_bss(sdata, mac_addr); 274 if (!sta) 275 goto out_unlock; 276 277 if (pairwise) 278 key = key_mtx_dereference(local, sta->ptk[key_idx]); 279 else 280 key = key_mtx_dereference(local, sta->gtk[key_idx]); 281 } else 282 key = key_mtx_dereference(local, sdata->keys[key_idx]); 283 284 if (!key) { 285 ret = -ENOENT; 286 goto out_unlock; 287 } 288 289 ieee80211_key_free(key, true); 290 291 ret = 0; 292 out_unlock: 293 mutex_unlock(&local->key_mtx); 294 mutex_unlock(&local->sta_mtx); 295 296 return ret; 297 } 298 299 static int ieee80211_get_key(struct wiphy *wiphy, struct net_device *dev, 300 u8 key_idx, bool pairwise, const u8 *mac_addr, 301 void *cookie, 302 void (*callback)(void *cookie, 303 struct key_params *params)) 304 { 305 struct ieee80211_sub_if_data *sdata; 306 struct sta_info *sta = NULL; 307 u8 seq[6] = {0}; 308 struct key_params params; 309 struct ieee80211_key *key = NULL; 310 u64 pn64; 311 u32 iv32; 312 u16 iv16; 313 int err = -ENOENT; 314 struct ieee80211_key_seq kseq = {}; 315 316 sdata = IEEE80211_DEV_TO_SUB_IF(dev); 317 318 rcu_read_lock(); 319 320 if (mac_addr) { 321 sta = sta_info_get_bss(sdata, mac_addr); 322 if (!sta) 323 goto out; 324 325 if (pairwise && key_idx < NUM_DEFAULT_KEYS) 326 key = rcu_dereference(sta->ptk[key_idx]); 327 else if (!pairwise && 328 key_idx < NUM_DEFAULT_KEYS + NUM_DEFAULT_MGMT_KEYS) 329 key = rcu_dereference(sta->gtk[key_idx]); 330 } else 331 key = rcu_dereference(sdata->keys[key_idx]); 332 333 if (!key) 334 goto out; 335 336 memset(¶ms, 0, sizeof(params)); 337 338 params.cipher = key->conf.cipher; 339 340 switch (key->conf.cipher) { 341 case WLAN_CIPHER_SUITE_TKIP: 342 iv32 = key->u.tkip.tx.iv32; 343 iv16 = key->u.tkip.tx.iv16; 344 345 if (key->flags & KEY_FLAG_UPLOADED_TO_HARDWARE && 346 !(key->conf.flags & IEEE80211_KEY_FLAG_GENERATE_IV)) { 347 drv_get_key_seq(sdata->local, key, &kseq); 348 iv32 = kseq.tkip.iv32; 349 iv16 = kseq.tkip.iv16; 350 } 351 352 seq[0] = iv16 & 0xff; 353 seq[1] = (iv16 >> 8) & 0xff; 354 seq[2] = iv32 & 0xff; 355 seq[3] = (iv32 >> 8) & 0xff; 356 seq[4] = (iv32 >> 16) & 0xff; 357 seq[5] = (iv32 >> 24) & 0xff; 358 params.seq = seq; 359 params.seq_len = 6; 360 break; 361 case WLAN_CIPHER_SUITE_CCMP: 362 case WLAN_CIPHER_SUITE_CCMP_256: 363 case WLAN_CIPHER_SUITE_AES_CMAC: 364 case WLAN_CIPHER_SUITE_BIP_CMAC_256: 365 BUILD_BUG_ON(offsetof(typeof(kseq), ccmp) != 366 offsetof(typeof(kseq), aes_cmac)); 367 case WLAN_CIPHER_SUITE_BIP_GMAC_128: 368 case WLAN_CIPHER_SUITE_BIP_GMAC_256: 369 BUILD_BUG_ON(offsetof(typeof(kseq), ccmp) != 370 offsetof(typeof(kseq), aes_gmac)); 371 case WLAN_CIPHER_SUITE_GCMP: 372 case WLAN_CIPHER_SUITE_GCMP_256: 373 BUILD_BUG_ON(offsetof(typeof(kseq), ccmp) != 374 offsetof(typeof(kseq), gcmp)); 375 376 if (key->flags & KEY_FLAG_UPLOADED_TO_HARDWARE && 377 !(key->conf.flags & IEEE80211_KEY_FLAG_GENERATE_IV)) { 378 drv_get_key_seq(sdata->local, key, &kseq); 379 memcpy(seq, kseq.ccmp.pn, 6); 380 } else { 381 pn64 = atomic64_read(&key->conf.tx_pn); 382 seq[0] = pn64; 383 seq[1] = pn64 >> 8; 384 seq[2] = pn64 >> 16; 385 seq[3] = pn64 >> 24; 386 seq[4] = pn64 >> 32; 387 seq[5] = pn64 >> 40; 388 } 389 params.seq = seq; 390 params.seq_len = 6; 391 break; 392 default: 393 if (!(key->flags & KEY_FLAG_UPLOADED_TO_HARDWARE)) 394 break; 395 if (WARN_ON(key->conf.flags & IEEE80211_KEY_FLAG_GENERATE_IV)) 396 break; 397 drv_get_key_seq(sdata->local, key, &kseq); 398 params.seq = kseq.hw.seq; 399 params.seq_len = kseq.hw.seq_len; 400 break; 401 } 402 403 params.key = key->conf.key; 404 params.key_len = key->conf.keylen; 405 406 callback(cookie, ¶ms); 407 err = 0; 408 409 out: 410 rcu_read_unlock(); 411 return err; 412 } 413 414 static int ieee80211_config_default_key(struct wiphy *wiphy, 415 struct net_device *dev, 416 u8 key_idx, bool uni, 417 bool multi) 418 { 419 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 420 421 ieee80211_set_default_key(sdata, key_idx, uni, multi); 422 423 return 0; 424 } 425 426 static int ieee80211_config_default_mgmt_key(struct wiphy *wiphy, 427 struct net_device *dev, 428 u8 key_idx) 429 { 430 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 431 432 ieee80211_set_default_mgmt_key(sdata, key_idx); 433 434 return 0; 435 } 436 437 void sta_set_rate_info_tx(struct sta_info *sta, 438 const struct ieee80211_tx_rate *rate, 439 struct rate_info *rinfo) 440 { 441 rinfo->flags = 0; 442 if (rate->flags & IEEE80211_TX_RC_MCS) { 443 rinfo->flags |= RATE_INFO_FLAGS_MCS; 444 rinfo->mcs = rate->idx; 445 } else if (rate->flags & IEEE80211_TX_RC_VHT_MCS) { 446 rinfo->flags |= RATE_INFO_FLAGS_VHT_MCS; 447 rinfo->mcs = ieee80211_rate_get_vht_mcs(rate); 448 rinfo->nss = ieee80211_rate_get_vht_nss(rate); 449 } else { 450 struct ieee80211_supported_band *sband; 451 int shift = ieee80211_vif_get_shift(&sta->sdata->vif); 452 u16 brate; 453 454 sband = sta->local->hw.wiphy->bands[ 455 ieee80211_get_sdata_band(sta->sdata)]; 456 brate = sband->bitrates[rate->idx].bitrate; 457 rinfo->legacy = DIV_ROUND_UP(brate, 1 << shift); 458 } 459 if (rate->flags & IEEE80211_TX_RC_40_MHZ_WIDTH) 460 rinfo->bw = RATE_INFO_BW_40; 461 else if (rate->flags & IEEE80211_TX_RC_80_MHZ_WIDTH) 462 rinfo->bw = RATE_INFO_BW_80; 463 else if (rate->flags & IEEE80211_TX_RC_160_MHZ_WIDTH) 464 rinfo->bw = RATE_INFO_BW_160; 465 else 466 rinfo->bw = RATE_INFO_BW_20; 467 if (rate->flags & IEEE80211_TX_RC_SHORT_GI) 468 rinfo->flags |= RATE_INFO_FLAGS_SHORT_GI; 469 } 470 471 static int ieee80211_dump_station(struct wiphy *wiphy, struct net_device *dev, 472 int idx, u8 *mac, struct station_info *sinfo) 473 { 474 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 475 struct ieee80211_local *local = sdata->local; 476 struct sta_info *sta; 477 int ret = -ENOENT; 478 479 mutex_lock(&local->sta_mtx); 480 481 sta = sta_info_get_by_idx(sdata, idx); 482 if (sta) { 483 ret = 0; 484 memcpy(mac, sta->sta.addr, ETH_ALEN); 485 sta_set_sinfo(sta, sinfo); 486 } 487 488 mutex_unlock(&local->sta_mtx); 489 490 return ret; 491 } 492 493 static int ieee80211_dump_survey(struct wiphy *wiphy, struct net_device *dev, 494 int idx, struct survey_info *survey) 495 { 496 struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr); 497 498 return drv_get_survey(local, idx, survey); 499 } 500 501 static int ieee80211_get_station(struct wiphy *wiphy, struct net_device *dev, 502 const u8 *mac, struct station_info *sinfo) 503 { 504 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 505 struct ieee80211_local *local = sdata->local; 506 struct sta_info *sta; 507 int ret = -ENOENT; 508 509 mutex_lock(&local->sta_mtx); 510 511 sta = sta_info_get_bss(sdata, mac); 512 if (sta) { 513 ret = 0; 514 sta_set_sinfo(sta, sinfo); 515 } 516 517 mutex_unlock(&local->sta_mtx); 518 519 return ret; 520 } 521 522 static int ieee80211_set_monitor_channel(struct wiphy *wiphy, 523 struct cfg80211_chan_def *chandef) 524 { 525 struct ieee80211_local *local = wiphy_priv(wiphy); 526 struct ieee80211_sub_if_data *sdata; 527 int ret = 0; 528 529 if (cfg80211_chandef_identical(&local->monitor_chandef, chandef)) 530 return 0; 531 532 mutex_lock(&local->mtx); 533 mutex_lock(&local->iflist_mtx); 534 if (local->use_chanctx) { 535 sdata = rcu_dereference_protected( 536 local->monitor_sdata, 537 lockdep_is_held(&local->iflist_mtx)); 538 if (sdata) { 539 ieee80211_vif_release_channel(sdata); 540 ret = ieee80211_vif_use_channel(sdata, chandef, 541 IEEE80211_CHANCTX_EXCLUSIVE); 542 } 543 } else if (local->open_count == local->monitors) { 544 local->_oper_chandef = *chandef; 545 ieee80211_hw_config(local, 0); 546 } 547 548 if (ret == 0) 549 local->monitor_chandef = *chandef; 550 mutex_unlock(&local->iflist_mtx); 551 mutex_unlock(&local->mtx); 552 553 return ret; 554 } 555 556 static int ieee80211_set_probe_resp(struct ieee80211_sub_if_data *sdata, 557 const u8 *resp, size_t resp_len, 558 const struct ieee80211_csa_settings *csa) 559 { 560 struct probe_resp *new, *old; 561 562 if (!resp || !resp_len) 563 return 1; 564 565 old = sdata_dereference(sdata->u.ap.probe_resp, sdata); 566 567 new = kzalloc(sizeof(struct probe_resp) + resp_len, GFP_KERNEL); 568 if (!new) 569 return -ENOMEM; 570 571 new->len = resp_len; 572 memcpy(new->data, resp, resp_len); 573 574 if (csa) 575 memcpy(new->csa_counter_offsets, csa->counter_offsets_presp, 576 csa->n_counter_offsets_presp * 577 sizeof(new->csa_counter_offsets[0])); 578 579 rcu_assign_pointer(sdata->u.ap.probe_resp, new); 580 if (old) 581 kfree_rcu(old, rcu_head); 582 583 return 0; 584 } 585 586 static int ieee80211_assign_beacon(struct ieee80211_sub_if_data *sdata, 587 struct cfg80211_beacon_data *params, 588 const struct ieee80211_csa_settings *csa) 589 { 590 struct beacon_data *new, *old; 591 int new_head_len, new_tail_len; 592 int size, err; 593 u32 changed = BSS_CHANGED_BEACON; 594 595 old = sdata_dereference(sdata->u.ap.beacon, sdata); 596 597 598 /* Need to have a beacon head if we don't have one yet */ 599 if (!params->head && !old) 600 return -EINVAL; 601 602 /* new or old head? */ 603 if (params->head) 604 new_head_len = params->head_len; 605 else 606 new_head_len = old->head_len; 607 608 /* new or old tail? */ 609 if (params->tail || !old) 610 /* params->tail_len will be zero for !params->tail */ 611 new_tail_len = params->tail_len; 612 else 613 new_tail_len = old->tail_len; 614 615 size = sizeof(*new) + new_head_len + new_tail_len; 616 617 new = kzalloc(size, GFP_KERNEL); 618 if (!new) 619 return -ENOMEM; 620 621 /* start filling the new info now */ 622 623 /* 624 * pointers go into the block we allocated, 625 * memory is | beacon_data | head | tail | 626 */ 627 new->head = ((u8 *) new) + sizeof(*new); 628 new->tail = new->head + new_head_len; 629 new->head_len = new_head_len; 630 new->tail_len = new_tail_len; 631 632 if (csa) { 633 new->csa_current_counter = csa->count; 634 memcpy(new->csa_counter_offsets, csa->counter_offsets_beacon, 635 csa->n_counter_offsets_beacon * 636 sizeof(new->csa_counter_offsets[0])); 637 } 638 639 /* copy in head */ 640 if (params->head) 641 memcpy(new->head, params->head, new_head_len); 642 else 643 memcpy(new->head, old->head, new_head_len); 644 645 /* copy in optional tail */ 646 if (params->tail) 647 memcpy(new->tail, params->tail, new_tail_len); 648 else 649 if (old) 650 memcpy(new->tail, old->tail, new_tail_len); 651 652 err = ieee80211_set_probe_resp(sdata, params->probe_resp, 653 params->probe_resp_len, csa); 654 if (err < 0) 655 return err; 656 if (err == 0) 657 changed |= BSS_CHANGED_AP_PROBE_RESP; 658 659 rcu_assign_pointer(sdata->u.ap.beacon, new); 660 661 if (old) 662 kfree_rcu(old, rcu_head); 663 664 return changed; 665 } 666 667 static int ieee80211_start_ap(struct wiphy *wiphy, struct net_device *dev, 668 struct cfg80211_ap_settings *params) 669 { 670 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 671 struct ieee80211_local *local = sdata->local; 672 struct beacon_data *old; 673 struct ieee80211_sub_if_data *vlan; 674 u32 changed = BSS_CHANGED_BEACON_INT | 675 BSS_CHANGED_BEACON_ENABLED | 676 BSS_CHANGED_BEACON | 677 BSS_CHANGED_SSID | 678 BSS_CHANGED_P2P_PS | 679 BSS_CHANGED_TXPOWER; 680 int err; 681 682 old = sdata_dereference(sdata->u.ap.beacon, sdata); 683 if (old) 684 return -EALREADY; 685 686 switch (params->smps_mode) { 687 case NL80211_SMPS_OFF: 688 sdata->smps_mode = IEEE80211_SMPS_OFF; 689 break; 690 case NL80211_SMPS_STATIC: 691 sdata->smps_mode = IEEE80211_SMPS_STATIC; 692 break; 693 case NL80211_SMPS_DYNAMIC: 694 sdata->smps_mode = IEEE80211_SMPS_DYNAMIC; 695 break; 696 default: 697 return -EINVAL; 698 } 699 sdata->needed_rx_chains = sdata->local->rx_chains; 700 701 mutex_lock(&local->mtx); 702 err = ieee80211_vif_use_channel(sdata, ¶ms->chandef, 703 IEEE80211_CHANCTX_SHARED); 704 if (!err) 705 ieee80211_vif_copy_chanctx_to_vlans(sdata, false); 706 mutex_unlock(&local->mtx); 707 if (err) 708 return err; 709 710 /* 711 * Apply control port protocol, this allows us to 712 * not encrypt dynamic WEP control frames. 713 */ 714 sdata->control_port_protocol = params->crypto.control_port_ethertype; 715 sdata->control_port_no_encrypt = params->crypto.control_port_no_encrypt; 716 sdata->encrypt_headroom = ieee80211_cs_headroom(sdata->local, 717 ¶ms->crypto, 718 sdata->vif.type); 719 720 list_for_each_entry(vlan, &sdata->u.ap.vlans, u.vlan.list) { 721 vlan->control_port_protocol = 722 params->crypto.control_port_ethertype; 723 vlan->control_port_no_encrypt = 724 params->crypto.control_port_no_encrypt; 725 vlan->encrypt_headroom = 726 ieee80211_cs_headroom(sdata->local, 727 ¶ms->crypto, 728 vlan->vif.type); 729 } 730 731 sdata->vif.bss_conf.beacon_int = params->beacon_interval; 732 sdata->vif.bss_conf.dtim_period = params->dtim_period; 733 sdata->vif.bss_conf.enable_beacon = true; 734 735 sdata->vif.bss_conf.ssid_len = params->ssid_len; 736 if (params->ssid_len) 737 memcpy(sdata->vif.bss_conf.ssid, params->ssid, 738 params->ssid_len); 739 sdata->vif.bss_conf.hidden_ssid = 740 (params->hidden_ssid != NL80211_HIDDEN_SSID_NOT_IN_USE); 741 742 memset(&sdata->vif.bss_conf.p2p_noa_attr, 0, 743 sizeof(sdata->vif.bss_conf.p2p_noa_attr)); 744 sdata->vif.bss_conf.p2p_noa_attr.oppps_ctwindow = 745 params->p2p_ctwindow & IEEE80211_P2P_OPPPS_CTWINDOW_MASK; 746 if (params->p2p_opp_ps) 747 sdata->vif.bss_conf.p2p_noa_attr.oppps_ctwindow |= 748 IEEE80211_P2P_OPPPS_ENABLE_BIT; 749 750 err = ieee80211_assign_beacon(sdata, ¶ms->beacon, NULL); 751 if (err < 0) { 752 ieee80211_vif_release_channel(sdata); 753 return err; 754 } 755 changed |= err; 756 757 err = drv_start_ap(sdata->local, sdata); 758 if (err) { 759 old = sdata_dereference(sdata->u.ap.beacon, sdata); 760 761 if (old) 762 kfree_rcu(old, rcu_head); 763 RCU_INIT_POINTER(sdata->u.ap.beacon, NULL); 764 ieee80211_vif_release_channel(sdata); 765 return err; 766 } 767 768 ieee80211_recalc_dtim(local, sdata); 769 ieee80211_bss_info_change_notify(sdata, changed); 770 771 netif_carrier_on(dev); 772 list_for_each_entry(vlan, &sdata->u.ap.vlans, u.vlan.list) 773 netif_carrier_on(vlan->dev); 774 775 return 0; 776 } 777 778 static int ieee80211_change_beacon(struct wiphy *wiphy, struct net_device *dev, 779 struct cfg80211_beacon_data *params) 780 { 781 struct ieee80211_sub_if_data *sdata; 782 struct beacon_data *old; 783 int err; 784 785 sdata = IEEE80211_DEV_TO_SUB_IF(dev); 786 sdata_assert_lock(sdata); 787 788 /* don't allow changing the beacon while CSA is in place - offset 789 * of channel switch counter may change 790 */ 791 if (sdata->vif.csa_active) 792 return -EBUSY; 793 794 old = sdata_dereference(sdata->u.ap.beacon, sdata); 795 if (!old) 796 return -ENOENT; 797 798 err = ieee80211_assign_beacon(sdata, params, NULL); 799 if (err < 0) 800 return err; 801 ieee80211_bss_info_change_notify(sdata, err); 802 return 0; 803 } 804 805 static int ieee80211_stop_ap(struct wiphy *wiphy, struct net_device *dev) 806 { 807 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 808 struct ieee80211_sub_if_data *vlan; 809 struct ieee80211_local *local = sdata->local; 810 struct beacon_data *old_beacon; 811 struct probe_resp *old_probe_resp; 812 struct cfg80211_chan_def chandef; 813 814 sdata_assert_lock(sdata); 815 816 old_beacon = sdata_dereference(sdata->u.ap.beacon, sdata); 817 if (!old_beacon) 818 return -ENOENT; 819 old_probe_resp = sdata_dereference(sdata->u.ap.probe_resp, sdata); 820 821 /* abort any running channel switch */ 822 mutex_lock(&local->mtx); 823 sdata->vif.csa_active = false; 824 if (sdata->csa_block_tx) { 825 ieee80211_wake_vif_queues(local, sdata, 826 IEEE80211_QUEUE_STOP_REASON_CSA); 827 sdata->csa_block_tx = false; 828 } 829 830 mutex_unlock(&local->mtx); 831 832 kfree(sdata->u.ap.next_beacon); 833 sdata->u.ap.next_beacon = NULL; 834 835 /* turn off carrier for this interface and dependent VLANs */ 836 list_for_each_entry(vlan, &sdata->u.ap.vlans, u.vlan.list) 837 netif_carrier_off(vlan->dev); 838 netif_carrier_off(dev); 839 840 /* remove beacon and probe response */ 841 RCU_INIT_POINTER(sdata->u.ap.beacon, NULL); 842 RCU_INIT_POINTER(sdata->u.ap.probe_resp, NULL); 843 kfree_rcu(old_beacon, rcu_head); 844 if (old_probe_resp) 845 kfree_rcu(old_probe_resp, rcu_head); 846 sdata->u.ap.driver_smps_mode = IEEE80211_SMPS_OFF; 847 848 __sta_info_flush(sdata, true); 849 ieee80211_free_keys(sdata, true); 850 851 sdata->vif.bss_conf.enable_beacon = false; 852 sdata->vif.bss_conf.ssid_len = 0; 853 clear_bit(SDATA_STATE_OFFCHANNEL_BEACON_STOPPED, &sdata->state); 854 ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_BEACON_ENABLED); 855 856 if (sdata->wdev.cac_started) { 857 chandef = sdata->vif.bss_conf.chandef; 858 cancel_delayed_work_sync(&sdata->dfs_cac_timer_work); 859 cfg80211_cac_event(sdata->dev, &chandef, 860 NL80211_RADAR_CAC_ABORTED, 861 GFP_KERNEL); 862 } 863 864 drv_stop_ap(sdata->local, sdata); 865 866 /* free all potentially still buffered bcast frames */ 867 local->total_ps_buffered -= skb_queue_len(&sdata->u.ap.ps.bc_buf); 868 skb_queue_purge(&sdata->u.ap.ps.bc_buf); 869 870 mutex_lock(&local->mtx); 871 ieee80211_vif_copy_chanctx_to_vlans(sdata, true); 872 ieee80211_vif_release_channel(sdata); 873 mutex_unlock(&local->mtx); 874 875 return 0; 876 } 877 878 /* Layer 2 Update frame (802.2 Type 1 LLC XID Update response) */ 879 struct iapp_layer2_update { 880 u8 da[ETH_ALEN]; /* broadcast */ 881 u8 sa[ETH_ALEN]; /* STA addr */ 882 __be16 len; /* 6 */ 883 u8 dsap; /* 0 */ 884 u8 ssap; /* 0 */ 885 u8 control; 886 u8 xid_info[3]; 887 } __packed; 888 889 static void ieee80211_send_layer2_update(struct sta_info *sta) 890 { 891 struct iapp_layer2_update *msg; 892 struct sk_buff *skb; 893 894 /* Send Level 2 Update Frame to update forwarding tables in layer 2 895 * bridge devices */ 896 897 skb = dev_alloc_skb(sizeof(*msg)); 898 if (!skb) 899 return; 900 msg = (struct iapp_layer2_update *)skb_put(skb, sizeof(*msg)); 901 902 /* 802.2 Type 1 Logical Link Control (LLC) Exchange Identifier (XID) 903 * Update response frame; IEEE Std 802.2-1998, 5.4.1.2.1 */ 904 905 eth_broadcast_addr(msg->da); 906 memcpy(msg->sa, sta->sta.addr, ETH_ALEN); 907 msg->len = htons(6); 908 msg->dsap = 0; 909 msg->ssap = 0x01; /* NULL LSAP, CR Bit: Response */ 910 msg->control = 0xaf; /* XID response lsb.1111F101. 911 * F=0 (no poll command; unsolicited frame) */ 912 msg->xid_info[0] = 0x81; /* XID format identifier */ 913 msg->xid_info[1] = 1; /* LLC types/classes: Type 1 LLC */ 914 msg->xid_info[2] = 0; /* XID sender's receive window size (RW) */ 915 916 skb->dev = sta->sdata->dev; 917 skb->protocol = eth_type_trans(skb, sta->sdata->dev); 918 memset(skb->cb, 0, sizeof(skb->cb)); 919 netif_rx_ni(skb); 920 } 921 922 static int sta_apply_auth_flags(struct ieee80211_local *local, 923 struct sta_info *sta, 924 u32 mask, u32 set) 925 { 926 int ret; 927 928 if (mask & BIT(NL80211_STA_FLAG_AUTHENTICATED) && 929 set & BIT(NL80211_STA_FLAG_AUTHENTICATED) && 930 !test_sta_flag(sta, WLAN_STA_AUTH)) { 931 ret = sta_info_move_state(sta, IEEE80211_STA_AUTH); 932 if (ret) 933 return ret; 934 } 935 936 if (mask & BIT(NL80211_STA_FLAG_ASSOCIATED) && 937 set & BIT(NL80211_STA_FLAG_ASSOCIATED) && 938 !test_sta_flag(sta, WLAN_STA_ASSOC)) { 939 /* 940 * When peer becomes associated, init rate control as 941 * well. Some drivers require rate control initialized 942 * before drv_sta_state() is called. 943 */ 944 if (!test_sta_flag(sta, WLAN_STA_RATE_CONTROL)) 945 rate_control_rate_init(sta); 946 947 ret = sta_info_move_state(sta, IEEE80211_STA_ASSOC); 948 if (ret) 949 return ret; 950 } 951 952 if (mask & BIT(NL80211_STA_FLAG_AUTHORIZED)) { 953 if (set & BIT(NL80211_STA_FLAG_AUTHORIZED)) 954 ret = sta_info_move_state(sta, IEEE80211_STA_AUTHORIZED); 955 else if (test_sta_flag(sta, WLAN_STA_AUTHORIZED)) 956 ret = sta_info_move_state(sta, IEEE80211_STA_ASSOC); 957 else 958 ret = 0; 959 if (ret) 960 return ret; 961 } 962 963 if (mask & BIT(NL80211_STA_FLAG_ASSOCIATED) && 964 !(set & BIT(NL80211_STA_FLAG_ASSOCIATED)) && 965 test_sta_flag(sta, WLAN_STA_ASSOC)) { 966 ret = sta_info_move_state(sta, IEEE80211_STA_AUTH); 967 if (ret) 968 return ret; 969 } 970 971 if (mask & BIT(NL80211_STA_FLAG_AUTHENTICATED) && 972 !(set & BIT(NL80211_STA_FLAG_AUTHENTICATED)) && 973 test_sta_flag(sta, WLAN_STA_AUTH)) { 974 ret = sta_info_move_state(sta, IEEE80211_STA_NONE); 975 if (ret) 976 return ret; 977 } 978 979 return 0; 980 } 981 982 static void sta_apply_mesh_params(struct ieee80211_local *local, 983 struct sta_info *sta, 984 struct station_parameters *params) 985 { 986 #ifdef CONFIG_MAC80211_MESH 987 struct ieee80211_sub_if_data *sdata = sta->sdata; 988 u32 changed = 0; 989 990 if (params->sta_modify_mask & STATION_PARAM_APPLY_PLINK_STATE) { 991 switch (params->plink_state) { 992 case NL80211_PLINK_ESTAB: 993 if (sta->mesh->plink_state != NL80211_PLINK_ESTAB) 994 changed = mesh_plink_inc_estab_count(sdata); 995 sta->mesh->plink_state = params->plink_state; 996 997 ieee80211_mps_sta_status_update(sta); 998 changed |= ieee80211_mps_set_sta_local_pm(sta, 999 sdata->u.mesh.mshcfg.power_mode); 1000 break; 1001 case NL80211_PLINK_LISTEN: 1002 case NL80211_PLINK_BLOCKED: 1003 case NL80211_PLINK_OPN_SNT: 1004 case NL80211_PLINK_OPN_RCVD: 1005 case NL80211_PLINK_CNF_RCVD: 1006 case NL80211_PLINK_HOLDING: 1007 if (sta->mesh->plink_state == NL80211_PLINK_ESTAB) 1008 changed = mesh_plink_dec_estab_count(sdata); 1009 sta->mesh->plink_state = params->plink_state; 1010 1011 ieee80211_mps_sta_status_update(sta); 1012 changed |= ieee80211_mps_set_sta_local_pm(sta, 1013 NL80211_MESH_POWER_UNKNOWN); 1014 break; 1015 default: 1016 /* nothing */ 1017 break; 1018 } 1019 } 1020 1021 switch (params->plink_action) { 1022 case NL80211_PLINK_ACTION_NO_ACTION: 1023 /* nothing */ 1024 break; 1025 case NL80211_PLINK_ACTION_OPEN: 1026 changed |= mesh_plink_open(sta); 1027 break; 1028 case NL80211_PLINK_ACTION_BLOCK: 1029 changed |= mesh_plink_block(sta); 1030 break; 1031 } 1032 1033 if (params->local_pm) 1034 changed |= ieee80211_mps_set_sta_local_pm(sta, 1035 params->local_pm); 1036 1037 ieee80211_mbss_info_change_notify(sdata, changed); 1038 #endif 1039 } 1040 1041 static int sta_apply_parameters(struct ieee80211_local *local, 1042 struct sta_info *sta, 1043 struct station_parameters *params) 1044 { 1045 int ret = 0; 1046 struct ieee80211_supported_band *sband; 1047 struct ieee80211_sub_if_data *sdata = sta->sdata; 1048 enum ieee80211_band band = ieee80211_get_sdata_band(sdata); 1049 u32 mask, set; 1050 1051 sband = local->hw.wiphy->bands[band]; 1052 1053 mask = params->sta_flags_mask; 1054 set = params->sta_flags_set; 1055 1056 if (ieee80211_vif_is_mesh(&sdata->vif)) { 1057 /* 1058 * In mesh mode, ASSOCIATED isn't part of the nl80211 1059 * API but must follow AUTHENTICATED for driver state. 1060 */ 1061 if (mask & BIT(NL80211_STA_FLAG_AUTHENTICATED)) 1062 mask |= BIT(NL80211_STA_FLAG_ASSOCIATED); 1063 if (set & BIT(NL80211_STA_FLAG_AUTHENTICATED)) 1064 set |= BIT(NL80211_STA_FLAG_ASSOCIATED); 1065 } else if (test_sta_flag(sta, WLAN_STA_TDLS_PEER)) { 1066 /* 1067 * TDLS -- everything follows authorized, but 1068 * only becoming authorized is possible, not 1069 * going back 1070 */ 1071 if (set & BIT(NL80211_STA_FLAG_AUTHORIZED)) { 1072 set |= BIT(NL80211_STA_FLAG_AUTHENTICATED) | 1073 BIT(NL80211_STA_FLAG_ASSOCIATED); 1074 mask |= BIT(NL80211_STA_FLAG_AUTHENTICATED) | 1075 BIT(NL80211_STA_FLAG_ASSOCIATED); 1076 } 1077 } 1078 1079 if (mask & BIT(NL80211_STA_FLAG_WME) && 1080 local->hw.queues >= IEEE80211_NUM_ACS) 1081 sta->sta.wme = set & BIT(NL80211_STA_FLAG_WME); 1082 1083 /* auth flags will be set later for TDLS, 1084 * and for unassociated stations that move to assocaited */ 1085 if (!test_sta_flag(sta, WLAN_STA_TDLS_PEER) && 1086 !((mask & BIT(NL80211_STA_FLAG_ASSOCIATED)) && 1087 (set & BIT(NL80211_STA_FLAG_ASSOCIATED)))) { 1088 ret = sta_apply_auth_flags(local, sta, mask, set); 1089 if (ret) 1090 return ret; 1091 } 1092 1093 if (mask & BIT(NL80211_STA_FLAG_SHORT_PREAMBLE)) { 1094 if (set & BIT(NL80211_STA_FLAG_SHORT_PREAMBLE)) 1095 set_sta_flag(sta, WLAN_STA_SHORT_PREAMBLE); 1096 else 1097 clear_sta_flag(sta, WLAN_STA_SHORT_PREAMBLE); 1098 } 1099 1100 if (mask & BIT(NL80211_STA_FLAG_MFP)) { 1101 sta->sta.mfp = !!(set & BIT(NL80211_STA_FLAG_MFP)); 1102 if (set & BIT(NL80211_STA_FLAG_MFP)) 1103 set_sta_flag(sta, WLAN_STA_MFP); 1104 else 1105 clear_sta_flag(sta, WLAN_STA_MFP); 1106 } 1107 1108 if (mask & BIT(NL80211_STA_FLAG_TDLS_PEER)) { 1109 if (set & BIT(NL80211_STA_FLAG_TDLS_PEER)) 1110 set_sta_flag(sta, WLAN_STA_TDLS_PEER); 1111 else 1112 clear_sta_flag(sta, WLAN_STA_TDLS_PEER); 1113 } 1114 1115 /* mark TDLS channel switch support, if the AP allows it */ 1116 if (test_sta_flag(sta, WLAN_STA_TDLS_PEER) && 1117 !sdata->u.mgd.tdls_chan_switch_prohibited && 1118 params->ext_capab_len >= 4 && 1119 params->ext_capab[3] & WLAN_EXT_CAPA4_TDLS_CHAN_SWITCH) 1120 set_sta_flag(sta, WLAN_STA_TDLS_CHAN_SWITCH); 1121 1122 if (test_sta_flag(sta, WLAN_STA_TDLS_PEER) && 1123 !sdata->u.mgd.tdls_wider_bw_prohibited && 1124 ieee80211_hw_check(&local->hw, TDLS_WIDER_BW) && 1125 params->ext_capab_len >= 8 && 1126 params->ext_capab[7] & WLAN_EXT_CAPA8_TDLS_WIDE_BW_ENABLED) 1127 set_sta_flag(sta, WLAN_STA_TDLS_WIDER_BW); 1128 1129 if (params->sta_modify_mask & STATION_PARAM_APPLY_UAPSD) { 1130 sta->sta.uapsd_queues = params->uapsd_queues; 1131 sta->sta.max_sp = params->max_sp; 1132 } 1133 1134 /* 1135 * cfg80211 validates this (1-2007) and allows setting the AID 1136 * only when creating a new station entry 1137 */ 1138 if (params->aid) 1139 sta->sta.aid = params->aid; 1140 1141 /* 1142 * Some of the following updates would be racy if called on an 1143 * existing station, via ieee80211_change_station(). However, 1144 * all such changes are rejected by cfg80211 except for updates 1145 * changing the supported rates on an existing but not yet used 1146 * TDLS peer. 1147 */ 1148 1149 if (params->listen_interval >= 0) 1150 sta->listen_interval = params->listen_interval; 1151 1152 if (params->supported_rates) { 1153 ieee80211_parse_bitrates(&sdata->vif.bss_conf.chandef, 1154 sband, params->supported_rates, 1155 params->supported_rates_len, 1156 &sta->sta.supp_rates[band]); 1157 } 1158 1159 if (params->ht_capa) 1160 ieee80211_ht_cap_ie_to_sta_ht_cap(sdata, sband, 1161 params->ht_capa, sta); 1162 1163 if (params->vht_capa) 1164 ieee80211_vht_cap_ie_to_sta_vht_cap(sdata, sband, 1165 params->vht_capa, sta); 1166 1167 if (params->opmode_notif_used) { 1168 /* returned value is only needed for rc update, but the 1169 * rc isn't initialized here yet, so ignore it 1170 */ 1171 __ieee80211_vht_handle_opmode(sdata, sta, 1172 params->opmode_notif, 1173 band, false); 1174 } 1175 1176 if (ieee80211_vif_is_mesh(&sdata->vif)) 1177 sta_apply_mesh_params(local, sta, params); 1178 1179 /* set the STA state after all sta info from usermode has been set */ 1180 if (test_sta_flag(sta, WLAN_STA_TDLS_PEER) || 1181 set & BIT(NL80211_STA_FLAG_ASSOCIATED)) { 1182 ret = sta_apply_auth_flags(local, sta, mask, set); 1183 if (ret) 1184 return ret; 1185 } 1186 1187 return 0; 1188 } 1189 1190 static int ieee80211_add_station(struct wiphy *wiphy, struct net_device *dev, 1191 const u8 *mac, 1192 struct station_parameters *params) 1193 { 1194 struct ieee80211_local *local = wiphy_priv(wiphy); 1195 struct sta_info *sta; 1196 struct ieee80211_sub_if_data *sdata; 1197 int err; 1198 int layer2_update; 1199 1200 if (params->vlan) { 1201 sdata = IEEE80211_DEV_TO_SUB_IF(params->vlan); 1202 1203 if (sdata->vif.type != NL80211_IFTYPE_AP_VLAN && 1204 sdata->vif.type != NL80211_IFTYPE_AP) 1205 return -EINVAL; 1206 } else 1207 sdata = IEEE80211_DEV_TO_SUB_IF(dev); 1208 1209 if (ether_addr_equal(mac, sdata->vif.addr)) 1210 return -EINVAL; 1211 1212 if (is_multicast_ether_addr(mac)) 1213 return -EINVAL; 1214 1215 sta = sta_info_alloc(sdata, mac, GFP_KERNEL); 1216 if (!sta) 1217 return -ENOMEM; 1218 1219 /* 1220 * defaults -- if userspace wants something else we'll 1221 * change it accordingly in sta_apply_parameters() 1222 */ 1223 if (!(params->sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)) && 1224 !(params->sta_flags_set & (BIT(NL80211_STA_FLAG_AUTHENTICATED) | 1225 BIT(NL80211_STA_FLAG_ASSOCIATED)))) { 1226 sta_info_pre_move_state(sta, IEEE80211_STA_AUTH); 1227 sta_info_pre_move_state(sta, IEEE80211_STA_ASSOC); 1228 } 1229 if (params->sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)) 1230 sta->sta.tdls = true; 1231 1232 err = sta_apply_parameters(local, sta, params); 1233 if (err) { 1234 sta_info_free(local, sta); 1235 return err; 1236 } 1237 1238 /* 1239 * for TDLS and for unassociated station, rate control should be 1240 * initialized only when rates are known and station is marked 1241 * authorized/associated 1242 */ 1243 if (!test_sta_flag(sta, WLAN_STA_TDLS_PEER) && 1244 test_sta_flag(sta, WLAN_STA_ASSOC)) 1245 rate_control_rate_init(sta); 1246 1247 layer2_update = sdata->vif.type == NL80211_IFTYPE_AP_VLAN || 1248 sdata->vif.type == NL80211_IFTYPE_AP; 1249 1250 err = sta_info_insert_rcu(sta); 1251 if (err) { 1252 rcu_read_unlock(); 1253 return err; 1254 } 1255 1256 if (layer2_update) 1257 ieee80211_send_layer2_update(sta); 1258 1259 rcu_read_unlock(); 1260 1261 return 0; 1262 } 1263 1264 static int ieee80211_del_station(struct wiphy *wiphy, struct net_device *dev, 1265 struct station_del_parameters *params) 1266 { 1267 struct ieee80211_sub_if_data *sdata; 1268 1269 sdata = IEEE80211_DEV_TO_SUB_IF(dev); 1270 1271 if (params->mac) 1272 return sta_info_destroy_addr_bss(sdata, params->mac); 1273 1274 sta_info_flush(sdata); 1275 return 0; 1276 } 1277 1278 static int ieee80211_change_station(struct wiphy *wiphy, 1279 struct net_device *dev, const u8 *mac, 1280 struct station_parameters *params) 1281 { 1282 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 1283 struct ieee80211_local *local = wiphy_priv(wiphy); 1284 struct sta_info *sta; 1285 struct ieee80211_sub_if_data *vlansdata; 1286 enum cfg80211_station_type statype; 1287 int err; 1288 1289 mutex_lock(&local->sta_mtx); 1290 1291 sta = sta_info_get_bss(sdata, mac); 1292 if (!sta) { 1293 err = -ENOENT; 1294 goto out_err; 1295 } 1296 1297 switch (sdata->vif.type) { 1298 case NL80211_IFTYPE_MESH_POINT: 1299 if (sdata->u.mesh.user_mpm) 1300 statype = CFG80211_STA_MESH_PEER_USER; 1301 else 1302 statype = CFG80211_STA_MESH_PEER_KERNEL; 1303 break; 1304 case NL80211_IFTYPE_ADHOC: 1305 statype = CFG80211_STA_IBSS; 1306 break; 1307 case NL80211_IFTYPE_STATION: 1308 if (!test_sta_flag(sta, WLAN_STA_TDLS_PEER)) { 1309 statype = CFG80211_STA_AP_STA; 1310 break; 1311 } 1312 if (test_sta_flag(sta, WLAN_STA_AUTHORIZED)) 1313 statype = CFG80211_STA_TDLS_PEER_ACTIVE; 1314 else 1315 statype = CFG80211_STA_TDLS_PEER_SETUP; 1316 break; 1317 case NL80211_IFTYPE_AP: 1318 case NL80211_IFTYPE_AP_VLAN: 1319 if (test_sta_flag(sta, WLAN_STA_ASSOC)) 1320 statype = CFG80211_STA_AP_CLIENT; 1321 else 1322 statype = CFG80211_STA_AP_CLIENT_UNASSOC; 1323 break; 1324 default: 1325 err = -EOPNOTSUPP; 1326 goto out_err; 1327 } 1328 1329 err = cfg80211_check_station_change(wiphy, params, statype); 1330 if (err) 1331 goto out_err; 1332 1333 if (params->vlan && params->vlan != sta->sdata->dev) { 1334 bool prev_4addr = false; 1335 bool new_4addr = false; 1336 1337 vlansdata = IEEE80211_DEV_TO_SUB_IF(params->vlan); 1338 1339 if (params->vlan->ieee80211_ptr->use_4addr) { 1340 if (vlansdata->u.vlan.sta) { 1341 err = -EBUSY; 1342 goto out_err; 1343 } 1344 1345 rcu_assign_pointer(vlansdata->u.vlan.sta, sta); 1346 new_4addr = true; 1347 } 1348 1349 if (sta->sdata->vif.type == NL80211_IFTYPE_AP_VLAN && 1350 sta->sdata->u.vlan.sta) { 1351 RCU_INIT_POINTER(sta->sdata->u.vlan.sta, NULL); 1352 prev_4addr = true; 1353 } 1354 1355 sta->sdata = vlansdata; 1356 ieee80211_check_fast_xmit(sta); 1357 1358 if (sta->sta_state == IEEE80211_STA_AUTHORIZED && 1359 prev_4addr != new_4addr) { 1360 if (new_4addr) 1361 atomic_dec(&sta->sdata->bss->num_mcast_sta); 1362 else 1363 atomic_inc(&sta->sdata->bss->num_mcast_sta); 1364 } 1365 1366 ieee80211_send_layer2_update(sta); 1367 } 1368 1369 err = sta_apply_parameters(local, sta, params); 1370 if (err) 1371 goto out_err; 1372 1373 mutex_unlock(&local->sta_mtx); 1374 1375 if ((sdata->vif.type == NL80211_IFTYPE_AP || 1376 sdata->vif.type == NL80211_IFTYPE_AP_VLAN) && 1377 sta->known_smps_mode != sta->sdata->bss->req_smps && 1378 test_sta_flag(sta, WLAN_STA_AUTHORIZED) && 1379 sta_info_tx_streams(sta) != 1) { 1380 ht_dbg(sta->sdata, 1381 "%pM just authorized and MIMO capable - update SMPS\n", 1382 sta->sta.addr); 1383 ieee80211_send_smps_action(sta->sdata, 1384 sta->sdata->bss->req_smps, 1385 sta->sta.addr, 1386 sta->sdata->vif.bss_conf.bssid); 1387 } 1388 1389 if (sdata->vif.type == NL80211_IFTYPE_STATION && 1390 params->sta_flags_mask & BIT(NL80211_STA_FLAG_AUTHORIZED)) { 1391 ieee80211_recalc_ps(local); 1392 ieee80211_recalc_ps_vif(sdata); 1393 } 1394 1395 return 0; 1396 out_err: 1397 mutex_unlock(&local->sta_mtx); 1398 return err; 1399 } 1400 1401 #ifdef CONFIG_MAC80211_MESH 1402 static int ieee80211_add_mpath(struct wiphy *wiphy, struct net_device *dev, 1403 const u8 *dst, const u8 *next_hop) 1404 { 1405 struct ieee80211_sub_if_data *sdata; 1406 struct mesh_path *mpath; 1407 struct sta_info *sta; 1408 1409 sdata = IEEE80211_DEV_TO_SUB_IF(dev); 1410 1411 rcu_read_lock(); 1412 sta = sta_info_get(sdata, next_hop); 1413 if (!sta) { 1414 rcu_read_unlock(); 1415 return -ENOENT; 1416 } 1417 1418 mpath = mesh_path_add(sdata, dst); 1419 if (IS_ERR(mpath)) { 1420 rcu_read_unlock(); 1421 return PTR_ERR(mpath); 1422 } 1423 1424 mesh_path_fix_nexthop(mpath, sta); 1425 1426 rcu_read_unlock(); 1427 return 0; 1428 } 1429 1430 static int ieee80211_del_mpath(struct wiphy *wiphy, struct net_device *dev, 1431 const u8 *dst) 1432 { 1433 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 1434 1435 if (dst) 1436 return mesh_path_del(sdata, dst); 1437 1438 mesh_path_flush_by_iface(sdata); 1439 return 0; 1440 } 1441 1442 static int ieee80211_change_mpath(struct wiphy *wiphy, struct net_device *dev, 1443 const u8 *dst, const u8 *next_hop) 1444 { 1445 struct ieee80211_sub_if_data *sdata; 1446 struct mesh_path *mpath; 1447 struct sta_info *sta; 1448 1449 sdata = IEEE80211_DEV_TO_SUB_IF(dev); 1450 1451 rcu_read_lock(); 1452 1453 sta = sta_info_get(sdata, next_hop); 1454 if (!sta) { 1455 rcu_read_unlock(); 1456 return -ENOENT; 1457 } 1458 1459 mpath = mesh_path_lookup(sdata, dst); 1460 if (!mpath) { 1461 rcu_read_unlock(); 1462 return -ENOENT; 1463 } 1464 1465 mesh_path_fix_nexthop(mpath, sta); 1466 1467 rcu_read_unlock(); 1468 return 0; 1469 } 1470 1471 static void mpath_set_pinfo(struct mesh_path *mpath, u8 *next_hop, 1472 struct mpath_info *pinfo) 1473 { 1474 struct sta_info *next_hop_sta = rcu_dereference(mpath->next_hop); 1475 1476 if (next_hop_sta) 1477 memcpy(next_hop, next_hop_sta->sta.addr, ETH_ALEN); 1478 else 1479 eth_zero_addr(next_hop); 1480 1481 memset(pinfo, 0, sizeof(*pinfo)); 1482 1483 pinfo->generation = mesh_paths_generation; 1484 1485 pinfo->filled = MPATH_INFO_FRAME_QLEN | 1486 MPATH_INFO_SN | 1487 MPATH_INFO_METRIC | 1488 MPATH_INFO_EXPTIME | 1489 MPATH_INFO_DISCOVERY_TIMEOUT | 1490 MPATH_INFO_DISCOVERY_RETRIES | 1491 MPATH_INFO_FLAGS; 1492 1493 pinfo->frame_qlen = mpath->frame_queue.qlen; 1494 pinfo->sn = mpath->sn; 1495 pinfo->metric = mpath->metric; 1496 if (time_before(jiffies, mpath->exp_time)) 1497 pinfo->exptime = jiffies_to_msecs(mpath->exp_time - jiffies); 1498 pinfo->discovery_timeout = 1499 jiffies_to_msecs(mpath->discovery_timeout); 1500 pinfo->discovery_retries = mpath->discovery_retries; 1501 if (mpath->flags & MESH_PATH_ACTIVE) 1502 pinfo->flags |= NL80211_MPATH_FLAG_ACTIVE; 1503 if (mpath->flags & MESH_PATH_RESOLVING) 1504 pinfo->flags |= NL80211_MPATH_FLAG_RESOLVING; 1505 if (mpath->flags & MESH_PATH_SN_VALID) 1506 pinfo->flags |= NL80211_MPATH_FLAG_SN_VALID; 1507 if (mpath->flags & MESH_PATH_FIXED) 1508 pinfo->flags |= NL80211_MPATH_FLAG_FIXED; 1509 if (mpath->flags & MESH_PATH_RESOLVED) 1510 pinfo->flags |= NL80211_MPATH_FLAG_RESOLVED; 1511 } 1512 1513 static int ieee80211_get_mpath(struct wiphy *wiphy, struct net_device *dev, 1514 u8 *dst, u8 *next_hop, struct mpath_info *pinfo) 1515 1516 { 1517 struct ieee80211_sub_if_data *sdata; 1518 struct mesh_path *mpath; 1519 1520 sdata = IEEE80211_DEV_TO_SUB_IF(dev); 1521 1522 rcu_read_lock(); 1523 mpath = mesh_path_lookup(sdata, dst); 1524 if (!mpath) { 1525 rcu_read_unlock(); 1526 return -ENOENT; 1527 } 1528 memcpy(dst, mpath->dst, ETH_ALEN); 1529 mpath_set_pinfo(mpath, next_hop, pinfo); 1530 rcu_read_unlock(); 1531 return 0; 1532 } 1533 1534 static int ieee80211_dump_mpath(struct wiphy *wiphy, struct net_device *dev, 1535 int idx, u8 *dst, u8 *next_hop, 1536 struct mpath_info *pinfo) 1537 { 1538 struct ieee80211_sub_if_data *sdata; 1539 struct mesh_path *mpath; 1540 1541 sdata = IEEE80211_DEV_TO_SUB_IF(dev); 1542 1543 rcu_read_lock(); 1544 mpath = mesh_path_lookup_by_idx(sdata, idx); 1545 if (!mpath) { 1546 rcu_read_unlock(); 1547 return -ENOENT; 1548 } 1549 memcpy(dst, mpath->dst, ETH_ALEN); 1550 mpath_set_pinfo(mpath, next_hop, pinfo); 1551 rcu_read_unlock(); 1552 return 0; 1553 } 1554 1555 static void mpp_set_pinfo(struct mesh_path *mpath, u8 *mpp, 1556 struct mpath_info *pinfo) 1557 { 1558 memset(pinfo, 0, sizeof(*pinfo)); 1559 memcpy(mpp, mpath->mpp, ETH_ALEN); 1560 1561 pinfo->generation = mpp_paths_generation; 1562 } 1563 1564 static int ieee80211_get_mpp(struct wiphy *wiphy, struct net_device *dev, 1565 u8 *dst, u8 *mpp, struct mpath_info *pinfo) 1566 1567 { 1568 struct ieee80211_sub_if_data *sdata; 1569 struct mesh_path *mpath; 1570 1571 sdata = IEEE80211_DEV_TO_SUB_IF(dev); 1572 1573 rcu_read_lock(); 1574 mpath = mpp_path_lookup(sdata, dst); 1575 if (!mpath) { 1576 rcu_read_unlock(); 1577 return -ENOENT; 1578 } 1579 memcpy(dst, mpath->dst, ETH_ALEN); 1580 mpp_set_pinfo(mpath, mpp, pinfo); 1581 rcu_read_unlock(); 1582 return 0; 1583 } 1584 1585 static int ieee80211_dump_mpp(struct wiphy *wiphy, struct net_device *dev, 1586 int idx, u8 *dst, u8 *mpp, 1587 struct mpath_info *pinfo) 1588 { 1589 struct ieee80211_sub_if_data *sdata; 1590 struct mesh_path *mpath; 1591 1592 sdata = IEEE80211_DEV_TO_SUB_IF(dev); 1593 1594 rcu_read_lock(); 1595 mpath = mpp_path_lookup_by_idx(sdata, idx); 1596 if (!mpath) { 1597 rcu_read_unlock(); 1598 return -ENOENT; 1599 } 1600 memcpy(dst, mpath->dst, ETH_ALEN); 1601 mpp_set_pinfo(mpath, mpp, pinfo); 1602 rcu_read_unlock(); 1603 return 0; 1604 } 1605 1606 static int ieee80211_get_mesh_config(struct wiphy *wiphy, 1607 struct net_device *dev, 1608 struct mesh_config *conf) 1609 { 1610 struct ieee80211_sub_if_data *sdata; 1611 sdata = IEEE80211_DEV_TO_SUB_IF(dev); 1612 1613 memcpy(conf, &(sdata->u.mesh.mshcfg), sizeof(struct mesh_config)); 1614 return 0; 1615 } 1616 1617 static inline bool _chg_mesh_attr(enum nl80211_meshconf_params parm, u32 mask) 1618 { 1619 return (mask >> (parm-1)) & 0x1; 1620 } 1621 1622 static int copy_mesh_setup(struct ieee80211_if_mesh *ifmsh, 1623 const struct mesh_setup *setup) 1624 { 1625 u8 *new_ie; 1626 const u8 *old_ie; 1627 struct ieee80211_sub_if_data *sdata = container_of(ifmsh, 1628 struct ieee80211_sub_if_data, u.mesh); 1629 1630 /* allocate information elements */ 1631 new_ie = NULL; 1632 old_ie = ifmsh->ie; 1633 1634 if (setup->ie_len) { 1635 new_ie = kmemdup(setup->ie, setup->ie_len, 1636 GFP_KERNEL); 1637 if (!new_ie) 1638 return -ENOMEM; 1639 } 1640 ifmsh->ie_len = setup->ie_len; 1641 ifmsh->ie = new_ie; 1642 kfree(old_ie); 1643 1644 /* now copy the rest of the setup parameters */ 1645 ifmsh->mesh_id_len = setup->mesh_id_len; 1646 memcpy(ifmsh->mesh_id, setup->mesh_id, ifmsh->mesh_id_len); 1647 ifmsh->mesh_sp_id = setup->sync_method; 1648 ifmsh->mesh_pp_id = setup->path_sel_proto; 1649 ifmsh->mesh_pm_id = setup->path_metric; 1650 ifmsh->user_mpm = setup->user_mpm; 1651 ifmsh->mesh_auth_id = setup->auth_id; 1652 ifmsh->security = IEEE80211_MESH_SEC_NONE; 1653 if (setup->is_authenticated) 1654 ifmsh->security |= IEEE80211_MESH_SEC_AUTHED; 1655 if (setup->is_secure) 1656 ifmsh->security |= IEEE80211_MESH_SEC_SECURED; 1657 1658 /* mcast rate setting in Mesh Node */ 1659 memcpy(sdata->vif.bss_conf.mcast_rate, setup->mcast_rate, 1660 sizeof(setup->mcast_rate)); 1661 sdata->vif.bss_conf.basic_rates = setup->basic_rates; 1662 1663 sdata->vif.bss_conf.beacon_int = setup->beacon_interval; 1664 sdata->vif.bss_conf.dtim_period = setup->dtim_period; 1665 1666 return 0; 1667 } 1668 1669 static int ieee80211_update_mesh_config(struct wiphy *wiphy, 1670 struct net_device *dev, u32 mask, 1671 const struct mesh_config *nconf) 1672 { 1673 struct mesh_config *conf; 1674 struct ieee80211_sub_if_data *sdata; 1675 struct ieee80211_if_mesh *ifmsh; 1676 1677 sdata = IEEE80211_DEV_TO_SUB_IF(dev); 1678 ifmsh = &sdata->u.mesh; 1679 1680 /* Set the config options which we are interested in setting */ 1681 conf = &(sdata->u.mesh.mshcfg); 1682 if (_chg_mesh_attr(NL80211_MESHCONF_RETRY_TIMEOUT, mask)) 1683 conf->dot11MeshRetryTimeout = nconf->dot11MeshRetryTimeout; 1684 if (_chg_mesh_attr(NL80211_MESHCONF_CONFIRM_TIMEOUT, mask)) 1685 conf->dot11MeshConfirmTimeout = nconf->dot11MeshConfirmTimeout; 1686 if (_chg_mesh_attr(NL80211_MESHCONF_HOLDING_TIMEOUT, mask)) 1687 conf->dot11MeshHoldingTimeout = nconf->dot11MeshHoldingTimeout; 1688 if (_chg_mesh_attr(NL80211_MESHCONF_MAX_PEER_LINKS, mask)) 1689 conf->dot11MeshMaxPeerLinks = nconf->dot11MeshMaxPeerLinks; 1690 if (_chg_mesh_attr(NL80211_MESHCONF_MAX_RETRIES, mask)) 1691 conf->dot11MeshMaxRetries = nconf->dot11MeshMaxRetries; 1692 if (_chg_mesh_attr(NL80211_MESHCONF_TTL, mask)) 1693 conf->dot11MeshTTL = nconf->dot11MeshTTL; 1694 if (_chg_mesh_attr(NL80211_MESHCONF_ELEMENT_TTL, mask)) 1695 conf->element_ttl = nconf->element_ttl; 1696 if (_chg_mesh_attr(NL80211_MESHCONF_AUTO_OPEN_PLINKS, mask)) { 1697 if (ifmsh->user_mpm) 1698 return -EBUSY; 1699 conf->auto_open_plinks = nconf->auto_open_plinks; 1700 } 1701 if (_chg_mesh_attr(NL80211_MESHCONF_SYNC_OFFSET_MAX_NEIGHBOR, mask)) 1702 conf->dot11MeshNbrOffsetMaxNeighbor = 1703 nconf->dot11MeshNbrOffsetMaxNeighbor; 1704 if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES, mask)) 1705 conf->dot11MeshHWMPmaxPREQretries = 1706 nconf->dot11MeshHWMPmaxPREQretries; 1707 if (_chg_mesh_attr(NL80211_MESHCONF_PATH_REFRESH_TIME, mask)) 1708 conf->path_refresh_time = nconf->path_refresh_time; 1709 if (_chg_mesh_attr(NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT, mask)) 1710 conf->min_discovery_timeout = nconf->min_discovery_timeout; 1711 if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT, mask)) 1712 conf->dot11MeshHWMPactivePathTimeout = 1713 nconf->dot11MeshHWMPactivePathTimeout; 1714 if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL, mask)) 1715 conf->dot11MeshHWMPpreqMinInterval = 1716 nconf->dot11MeshHWMPpreqMinInterval; 1717 if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_PERR_MIN_INTERVAL, mask)) 1718 conf->dot11MeshHWMPperrMinInterval = 1719 nconf->dot11MeshHWMPperrMinInterval; 1720 if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME, 1721 mask)) 1722 conf->dot11MeshHWMPnetDiameterTraversalTime = 1723 nconf->dot11MeshHWMPnetDiameterTraversalTime; 1724 if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_ROOTMODE, mask)) { 1725 conf->dot11MeshHWMPRootMode = nconf->dot11MeshHWMPRootMode; 1726 ieee80211_mesh_root_setup(ifmsh); 1727 } 1728 if (_chg_mesh_attr(NL80211_MESHCONF_GATE_ANNOUNCEMENTS, mask)) { 1729 /* our current gate announcement implementation rides on root 1730 * announcements, so require this ifmsh to also be a root node 1731 * */ 1732 if (nconf->dot11MeshGateAnnouncementProtocol && 1733 !(conf->dot11MeshHWMPRootMode > IEEE80211_ROOTMODE_ROOT)) { 1734 conf->dot11MeshHWMPRootMode = IEEE80211_PROACTIVE_RANN; 1735 ieee80211_mesh_root_setup(ifmsh); 1736 } 1737 conf->dot11MeshGateAnnouncementProtocol = 1738 nconf->dot11MeshGateAnnouncementProtocol; 1739 } 1740 if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_RANN_INTERVAL, mask)) 1741 conf->dot11MeshHWMPRannInterval = 1742 nconf->dot11MeshHWMPRannInterval; 1743 if (_chg_mesh_attr(NL80211_MESHCONF_FORWARDING, mask)) 1744 conf->dot11MeshForwarding = nconf->dot11MeshForwarding; 1745 if (_chg_mesh_attr(NL80211_MESHCONF_RSSI_THRESHOLD, mask)) { 1746 /* our RSSI threshold implementation is supported only for 1747 * devices that report signal in dBm. 1748 */ 1749 if (!ieee80211_hw_check(&sdata->local->hw, SIGNAL_DBM)) 1750 return -ENOTSUPP; 1751 conf->rssi_threshold = nconf->rssi_threshold; 1752 } 1753 if (_chg_mesh_attr(NL80211_MESHCONF_HT_OPMODE, mask)) { 1754 conf->ht_opmode = nconf->ht_opmode; 1755 sdata->vif.bss_conf.ht_operation_mode = nconf->ht_opmode; 1756 ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_HT); 1757 } 1758 if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_PATH_TO_ROOT_TIMEOUT, mask)) 1759 conf->dot11MeshHWMPactivePathToRootTimeout = 1760 nconf->dot11MeshHWMPactivePathToRootTimeout; 1761 if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_ROOT_INTERVAL, mask)) 1762 conf->dot11MeshHWMProotInterval = 1763 nconf->dot11MeshHWMProotInterval; 1764 if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_CONFIRMATION_INTERVAL, mask)) 1765 conf->dot11MeshHWMPconfirmationInterval = 1766 nconf->dot11MeshHWMPconfirmationInterval; 1767 if (_chg_mesh_attr(NL80211_MESHCONF_POWER_MODE, mask)) { 1768 conf->power_mode = nconf->power_mode; 1769 ieee80211_mps_local_status_update(sdata); 1770 } 1771 if (_chg_mesh_attr(NL80211_MESHCONF_AWAKE_WINDOW, mask)) 1772 conf->dot11MeshAwakeWindowDuration = 1773 nconf->dot11MeshAwakeWindowDuration; 1774 if (_chg_mesh_attr(NL80211_MESHCONF_PLINK_TIMEOUT, mask)) 1775 conf->plink_timeout = nconf->plink_timeout; 1776 ieee80211_mbss_info_change_notify(sdata, BSS_CHANGED_BEACON); 1777 return 0; 1778 } 1779 1780 static int ieee80211_join_mesh(struct wiphy *wiphy, struct net_device *dev, 1781 const struct mesh_config *conf, 1782 const struct mesh_setup *setup) 1783 { 1784 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 1785 struct ieee80211_if_mesh *ifmsh = &sdata->u.mesh; 1786 int err; 1787 1788 memcpy(&ifmsh->mshcfg, conf, sizeof(struct mesh_config)); 1789 err = copy_mesh_setup(ifmsh, setup); 1790 if (err) 1791 return err; 1792 1793 /* can mesh use other SMPS modes? */ 1794 sdata->smps_mode = IEEE80211_SMPS_OFF; 1795 sdata->needed_rx_chains = sdata->local->rx_chains; 1796 1797 mutex_lock(&sdata->local->mtx); 1798 err = ieee80211_vif_use_channel(sdata, &setup->chandef, 1799 IEEE80211_CHANCTX_SHARED); 1800 mutex_unlock(&sdata->local->mtx); 1801 if (err) 1802 return err; 1803 1804 return ieee80211_start_mesh(sdata); 1805 } 1806 1807 static int ieee80211_leave_mesh(struct wiphy *wiphy, struct net_device *dev) 1808 { 1809 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 1810 1811 ieee80211_stop_mesh(sdata); 1812 mutex_lock(&sdata->local->mtx); 1813 ieee80211_vif_release_channel(sdata); 1814 mutex_unlock(&sdata->local->mtx); 1815 1816 return 0; 1817 } 1818 #endif 1819 1820 static int ieee80211_change_bss(struct wiphy *wiphy, 1821 struct net_device *dev, 1822 struct bss_parameters *params) 1823 { 1824 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 1825 enum ieee80211_band band; 1826 u32 changed = 0; 1827 1828 if (!sdata_dereference(sdata->u.ap.beacon, sdata)) 1829 return -ENOENT; 1830 1831 band = ieee80211_get_sdata_band(sdata); 1832 1833 if (params->use_cts_prot >= 0) { 1834 sdata->vif.bss_conf.use_cts_prot = params->use_cts_prot; 1835 changed |= BSS_CHANGED_ERP_CTS_PROT; 1836 } 1837 if (params->use_short_preamble >= 0) { 1838 sdata->vif.bss_conf.use_short_preamble = 1839 params->use_short_preamble; 1840 changed |= BSS_CHANGED_ERP_PREAMBLE; 1841 } 1842 1843 if (!sdata->vif.bss_conf.use_short_slot && 1844 band == IEEE80211_BAND_5GHZ) { 1845 sdata->vif.bss_conf.use_short_slot = true; 1846 changed |= BSS_CHANGED_ERP_SLOT; 1847 } 1848 1849 if (params->use_short_slot_time >= 0) { 1850 sdata->vif.bss_conf.use_short_slot = 1851 params->use_short_slot_time; 1852 changed |= BSS_CHANGED_ERP_SLOT; 1853 } 1854 1855 if (params->basic_rates) { 1856 ieee80211_parse_bitrates(&sdata->vif.bss_conf.chandef, 1857 wiphy->bands[band], 1858 params->basic_rates, 1859 params->basic_rates_len, 1860 &sdata->vif.bss_conf.basic_rates); 1861 changed |= BSS_CHANGED_BASIC_RATES; 1862 } 1863 1864 if (params->ap_isolate >= 0) { 1865 if (params->ap_isolate) 1866 sdata->flags |= IEEE80211_SDATA_DONT_BRIDGE_PACKETS; 1867 else 1868 sdata->flags &= ~IEEE80211_SDATA_DONT_BRIDGE_PACKETS; 1869 } 1870 1871 if (params->ht_opmode >= 0) { 1872 sdata->vif.bss_conf.ht_operation_mode = 1873 (u16) params->ht_opmode; 1874 changed |= BSS_CHANGED_HT; 1875 } 1876 1877 if (params->p2p_ctwindow >= 0) { 1878 sdata->vif.bss_conf.p2p_noa_attr.oppps_ctwindow &= 1879 ~IEEE80211_P2P_OPPPS_CTWINDOW_MASK; 1880 sdata->vif.bss_conf.p2p_noa_attr.oppps_ctwindow |= 1881 params->p2p_ctwindow & IEEE80211_P2P_OPPPS_CTWINDOW_MASK; 1882 changed |= BSS_CHANGED_P2P_PS; 1883 } 1884 1885 if (params->p2p_opp_ps > 0) { 1886 sdata->vif.bss_conf.p2p_noa_attr.oppps_ctwindow |= 1887 IEEE80211_P2P_OPPPS_ENABLE_BIT; 1888 changed |= BSS_CHANGED_P2P_PS; 1889 } else if (params->p2p_opp_ps == 0) { 1890 sdata->vif.bss_conf.p2p_noa_attr.oppps_ctwindow &= 1891 ~IEEE80211_P2P_OPPPS_ENABLE_BIT; 1892 changed |= BSS_CHANGED_P2P_PS; 1893 } 1894 1895 ieee80211_bss_info_change_notify(sdata, changed); 1896 1897 return 0; 1898 } 1899 1900 static int ieee80211_set_txq_params(struct wiphy *wiphy, 1901 struct net_device *dev, 1902 struct ieee80211_txq_params *params) 1903 { 1904 struct ieee80211_local *local = wiphy_priv(wiphy); 1905 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 1906 struct ieee80211_tx_queue_params p; 1907 1908 if (!local->ops->conf_tx) 1909 return -EOPNOTSUPP; 1910 1911 if (local->hw.queues < IEEE80211_NUM_ACS) 1912 return -EOPNOTSUPP; 1913 1914 memset(&p, 0, sizeof(p)); 1915 p.aifs = params->aifs; 1916 p.cw_max = params->cwmax; 1917 p.cw_min = params->cwmin; 1918 p.txop = params->txop; 1919 1920 /* 1921 * Setting tx queue params disables u-apsd because it's only 1922 * called in master mode. 1923 */ 1924 p.uapsd = false; 1925 1926 sdata->tx_conf[params->ac] = p; 1927 if (drv_conf_tx(local, sdata, params->ac, &p)) { 1928 wiphy_debug(local->hw.wiphy, 1929 "failed to set TX queue parameters for AC %d\n", 1930 params->ac); 1931 return -EINVAL; 1932 } 1933 1934 ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_QOS); 1935 1936 return 0; 1937 } 1938 1939 #ifdef CONFIG_PM 1940 static int ieee80211_suspend(struct wiphy *wiphy, 1941 struct cfg80211_wowlan *wowlan) 1942 { 1943 return __ieee80211_suspend(wiphy_priv(wiphy), wowlan); 1944 } 1945 1946 static int ieee80211_resume(struct wiphy *wiphy) 1947 { 1948 return __ieee80211_resume(wiphy_priv(wiphy)); 1949 } 1950 #else 1951 #define ieee80211_suspend NULL 1952 #define ieee80211_resume NULL 1953 #endif 1954 1955 static int ieee80211_scan(struct wiphy *wiphy, 1956 struct cfg80211_scan_request *req) 1957 { 1958 struct ieee80211_sub_if_data *sdata; 1959 1960 sdata = IEEE80211_WDEV_TO_SUB_IF(req->wdev); 1961 1962 switch (ieee80211_vif_type_p2p(&sdata->vif)) { 1963 case NL80211_IFTYPE_STATION: 1964 case NL80211_IFTYPE_ADHOC: 1965 case NL80211_IFTYPE_MESH_POINT: 1966 case NL80211_IFTYPE_P2P_CLIENT: 1967 case NL80211_IFTYPE_P2P_DEVICE: 1968 break; 1969 case NL80211_IFTYPE_P2P_GO: 1970 if (sdata->local->ops->hw_scan) 1971 break; 1972 /* 1973 * FIXME: implement NoA while scanning in software, 1974 * for now fall through to allow scanning only when 1975 * beaconing hasn't been configured yet 1976 */ 1977 case NL80211_IFTYPE_AP: 1978 /* 1979 * If the scan has been forced (and the driver supports 1980 * forcing), don't care about being beaconing already. 1981 * This will create problems to the attached stations (e.g. all 1982 * the frames sent while scanning on other channel will be 1983 * lost) 1984 */ 1985 if (sdata->u.ap.beacon && 1986 (!(wiphy->features & NL80211_FEATURE_AP_SCAN) || 1987 !(req->flags & NL80211_SCAN_FLAG_AP))) 1988 return -EOPNOTSUPP; 1989 break; 1990 default: 1991 return -EOPNOTSUPP; 1992 } 1993 1994 return ieee80211_request_scan(sdata, req); 1995 } 1996 1997 static int 1998 ieee80211_sched_scan_start(struct wiphy *wiphy, 1999 struct net_device *dev, 2000 struct cfg80211_sched_scan_request *req) 2001 { 2002 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 2003 2004 if (!sdata->local->ops->sched_scan_start) 2005 return -EOPNOTSUPP; 2006 2007 return ieee80211_request_sched_scan_start(sdata, req); 2008 } 2009 2010 static int 2011 ieee80211_sched_scan_stop(struct wiphy *wiphy, struct net_device *dev) 2012 { 2013 struct ieee80211_local *local = wiphy_priv(wiphy); 2014 2015 if (!local->ops->sched_scan_stop) 2016 return -EOPNOTSUPP; 2017 2018 return ieee80211_request_sched_scan_stop(local); 2019 } 2020 2021 static int ieee80211_auth(struct wiphy *wiphy, struct net_device *dev, 2022 struct cfg80211_auth_request *req) 2023 { 2024 return ieee80211_mgd_auth(IEEE80211_DEV_TO_SUB_IF(dev), req); 2025 } 2026 2027 static int ieee80211_assoc(struct wiphy *wiphy, struct net_device *dev, 2028 struct cfg80211_assoc_request *req) 2029 { 2030 return ieee80211_mgd_assoc(IEEE80211_DEV_TO_SUB_IF(dev), req); 2031 } 2032 2033 static int ieee80211_deauth(struct wiphy *wiphy, struct net_device *dev, 2034 struct cfg80211_deauth_request *req) 2035 { 2036 return ieee80211_mgd_deauth(IEEE80211_DEV_TO_SUB_IF(dev), req); 2037 } 2038 2039 static int ieee80211_disassoc(struct wiphy *wiphy, struct net_device *dev, 2040 struct cfg80211_disassoc_request *req) 2041 { 2042 return ieee80211_mgd_disassoc(IEEE80211_DEV_TO_SUB_IF(dev), req); 2043 } 2044 2045 static int ieee80211_join_ibss(struct wiphy *wiphy, struct net_device *dev, 2046 struct cfg80211_ibss_params *params) 2047 { 2048 return ieee80211_ibss_join(IEEE80211_DEV_TO_SUB_IF(dev), params); 2049 } 2050 2051 static int ieee80211_leave_ibss(struct wiphy *wiphy, struct net_device *dev) 2052 { 2053 return ieee80211_ibss_leave(IEEE80211_DEV_TO_SUB_IF(dev)); 2054 } 2055 2056 static int ieee80211_join_ocb(struct wiphy *wiphy, struct net_device *dev, 2057 struct ocb_setup *setup) 2058 { 2059 return ieee80211_ocb_join(IEEE80211_DEV_TO_SUB_IF(dev), setup); 2060 } 2061 2062 static int ieee80211_leave_ocb(struct wiphy *wiphy, struct net_device *dev) 2063 { 2064 return ieee80211_ocb_leave(IEEE80211_DEV_TO_SUB_IF(dev)); 2065 } 2066 2067 static int ieee80211_set_mcast_rate(struct wiphy *wiphy, struct net_device *dev, 2068 int rate[IEEE80211_NUM_BANDS]) 2069 { 2070 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 2071 2072 memcpy(sdata->vif.bss_conf.mcast_rate, rate, 2073 sizeof(int) * IEEE80211_NUM_BANDS); 2074 2075 return 0; 2076 } 2077 2078 static int ieee80211_set_wiphy_params(struct wiphy *wiphy, u32 changed) 2079 { 2080 struct ieee80211_local *local = wiphy_priv(wiphy); 2081 int err; 2082 2083 if (changed & WIPHY_PARAM_FRAG_THRESHOLD) { 2084 ieee80211_check_fast_xmit_all(local); 2085 2086 err = drv_set_frag_threshold(local, wiphy->frag_threshold); 2087 2088 if (err) { 2089 ieee80211_check_fast_xmit_all(local); 2090 return err; 2091 } 2092 } 2093 2094 if ((changed & WIPHY_PARAM_COVERAGE_CLASS) || 2095 (changed & WIPHY_PARAM_DYN_ACK)) { 2096 s16 coverage_class; 2097 2098 coverage_class = changed & WIPHY_PARAM_COVERAGE_CLASS ? 2099 wiphy->coverage_class : -1; 2100 err = drv_set_coverage_class(local, coverage_class); 2101 2102 if (err) 2103 return err; 2104 } 2105 2106 if (changed & WIPHY_PARAM_RTS_THRESHOLD) { 2107 err = drv_set_rts_threshold(local, wiphy->rts_threshold); 2108 2109 if (err) 2110 return err; 2111 } 2112 2113 if (changed & WIPHY_PARAM_RETRY_SHORT) { 2114 if (wiphy->retry_short > IEEE80211_MAX_TX_RETRY) 2115 return -EINVAL; 2116 local->hw.conf.short_frame_max_tx_count = wiphy->retry_short; 2117 } 2118 if (changed & WIPHY_PARAM_RETRY_LONG) { 2119 if (wiphy->retry_long > IEEE80211_MAX_TX_RETRY) 2120 return -EINVAL; 2121 local->hw.conf.long_frame_max_tx_count = wiphy->retry_long; 2122 } 2123 if (changed & 2124 (WIPHY_PARAM_RETRY_SHORT | WIPHY_PARAM_RETRY_LONG)) 2125 ieee80211_hw_config(local, IEEE80211_CONF_CHANGE_RETRY_LIMITS); 2126 2127 return 0; 2128 } 2129 2130 static int ieee80211_set_tx_power(struct wiphy *wiphy, 2131 struct wireless_dev *wdev, 2132 enum nl80211_tx_power_setting type, int mbm) 2133 { 2134 struct ieee80211_local *local = wiphy_priv(wiphy); 2135 struct ieee80211_sub_if_data *sdata; 2136 enum nl80211_tx_power_setting txp_type = type; 2137 bool update_txp_type = false; 2138 2139 if (wdev) { 2140 sdata = IEEE80211_WDEV_TO_SUB_IF(wdev); 2141 2142 switch (type) { 2143 case NL80211_TX_POWER_AUTOMATIC: 2144 sdata->user_power_level = IEEE80211_UNSET_POWER_LEVEL; 2145 txp_type = NL80211_TX_POWER_LIMITED; 2146 break; 2147 case NL80211_TX_POWER_LIMITED: 2148 case NL80211_TX_POWER_FIXED: 2149 if (mbm < 0 || (mbm % 100)) 2150 return -EOPNOTSUPP; 2151 sdata->user_power_level = MBM_TO_DBM(mbm); 2152 break; 2153 } 2154 2155 if (txp_type != sdata->vif.bss_conf.txpower_type) { 2156 update_txp_type = true; 2157 sdata->vif.bss_conf.txpower_type = txp_type; 2158 } 2159 2160 ieee80211_recalc_txpower(sdata, update_txp_type); 2161 2162 return 0; 2163 } 2164 2165 switch (type) { 2166 case NL80211_TX_POWER_AUTOMATIC: 2167 local->user_power_level = IEEE80211_UNSET_POWER_LEVEL; 2168 txp_type = NL80211_TX_POWER_LIMITED; 2169 break; 2170 case NL80211_TX_POWER_LIMITED: 2171 case NL80211_TX_POWER_FIXED: 2172 if (mbm < 0 || (mbm % 100)) 2173 return -EOPNOTSUPP; 2174 local->user_power_level = MBM_TO_DBM(mbm); 2175 break; 2176 } 2177 2178 mutex_lock(&local->iflist_mtx); 2179 list_for_each_entry(sdata, &local->interfaces, list) { 2180 sdata->user_power_level = local->user_power_level; 2181 if (txp_type != sdata->vif.bss_conf.txpower_type) 2182 update_txp_type = true; 2183 sdata->vif.bss_conf.txpower_type = txp_type; 2184 } 2185 list_for_each_entry(sdata, &local->interfaces, list) 2186 ieee80211_recalc_txpower(sdata, update_txp_type); 2187 mutex_unlock(&local->iflist_mtx); 2188 2189 return 0; 2190 } 2191 2192 static int ieee80211_get_tx_power(struct wiphy *wiphy, 2193 struct wireless_dev *wdev, 2194 int *dbm) 2195 { 2196 struct ieee80211_local *local = wiphy_priv(wiphy); 2197 struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev); 2198 2199 if (local->ops->get_txpower) 2200 return drv_get_txpower(local, sdata, dbm); 2201 2202 if (!local->use_chanctx) 2203 *dbm = local->hw.conf.power_level; 2204 else 2205 *dbm = sdata->vif.bss_conf.txpower; 2206 2207 return 0; 2208 } 2209 2210 static int ieee80211_set_wds_peer(struct wiphy *wiphy, struct net_device *dev, 2211 const u8 *addr) 2212 { 2213 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 2214 2215 memcpy(&sdata->u.wds.remote_addr, addr, ETH_ALEN); 2216 2217 return 0; 2218 } 2219 2220 static void ieee80211_rfkill_poll(struct wiphy *wiphy) 2221 { 2222 struct ieee80211_local *local = wiphy_priv(wiphy); 2223 2224 drv_rfkill_poll(local); 2225 } 2226 2227 #ifdef CONFIG_NL80211_TESTMODE 2228 static int ieee80211_testmode_cmd(struct wiphy *wiphy, 2229 struct wireless_dev *wdev, 2230 void *data, int len) 2231 { 2232 struct ieee80211_local *local = wiphy_priv(wiphy); 2233 struct ieee80211_vif *vif = NULL; 2234 2235 if (!local->ops->testmode_cmd) 2236 return -EOPNOTSUPP; 2237 2238 if (wdev) { 2239 struct ieee80211_sub_if_data *sdata; 2240 2241 sdata = IEEE80211_WDEV_TO_SUB_IF(wdev); 2242 if (sdata->flags & IEEE80211_SDATA_IN_DRIVER) 2243 vif = &sdata->vif; 2244 } 2245 2246 return local->ops->testmode_cmd(&local->hw, vif, data, len); 2247 } 2248 2249 static int ieee80211_testmode_dump(struct wiphy *wiphy, 2250 struct sk_buff *skb, 2251 struct netlink_callback *cb, 2252 void *data, int len) 2253 { 2254 struct ieee80211_local *local = wiphy_priv(wiphy); 2255 2256 if (!local->ops->testmode_dump) 2257 return -EOPNOTSUPP; 2258 2259 return local->ops->testmode_dump(&local->hw, skb, cb, data, len); 2260 } 2261 #endif 2262 2263 int __ieee80211_request_smps_ap(struct ieee80211_sub_if_data *sdata, 2264 enum ieee80211_smps_mode smps_mode) 2265 { 2266 struct sta_info *sta; 2267 enum ieee80211_smps_mode old_req; 2268 2269 if (WARN_ON_ONCE(sdata->vif.type != NL80211_IFTYPE_AP)) 2270 return -EINVAL; 2271 2272 if (sdata->vif.bss_conf.chandef.width == NL80211_CHAN_WIDTH_20_NOHT) 2273 return 0; 2274 2275 old_req = sdata->u.ap.req_smps; 2276 sdata->u.ap.req_smps = smps_mode; 2277 2278 /* AUTOMATIC doesn't mean much for AP - don't allow it */ 2279 if (old_req == smps_mode || 2280 smps_mode == IEEE80211_SMPS_AUTOMATIC) 2281 return 0; 2282 2283 /* If no associated stations, there's no need to do anything */ 2284 if (!atomic_read(&sdata->u.ap.num_mcast_sta)) { 2285 sdata->smps_mode = smps_mode; 2286 ieee80211_queue_work(&sdata->local->hw, &sdata->recalc_smps); 2287 return 0; 2288 } 2289 2290 ht_dbg(sdata, 2291 "SMPS %d requested in AP mode, sending Action frame to %d stations\n", 2292 smps_mode, atomic_read(&sdata->u.ap.num_mcast_sta)); 2293 2294 mutex_lock(&sdata->local->sta_mtx); 2295 list_for_each_entry(sta, &sdata->local->sta_list, list) { 2296 /* 2297 * Only stations associated to our AP and 2298 * associated VLANs 2299 */ 2300 if (sta->sdata->bss != &sdata->u.ap) 2301 continue; 2302 2303 /* This station doesn't support MIMO - skip it */ 2304 if (sta_info_tx_streams(sta) == 1) 2305 continue; 2306 2307 /* 2308 * Don't wake up a STA just to send the action frame 2309 * unless we are getting more restrictive. 2310 */ 2311 if (test_sta_flag(sta, WLAN_STA_PS_STA) && 2312 !ieee80211_smps_is_restrictive(sta->known_smps_mode, 2313 smps_mode)) { 2314 ht_dbg(sdata, "Won't send SMPS to sleeping STA %pM\n", 2315 sta->sta.addr); 2316 continue; 2317 } 2318 2319 /* 2320 * If the STA is not authorized, wait until it gets 2321 * authorized and the action frame will be sent then. 2322 */ 2323 if (!test_sta_flag(sta, WLAN_STA_AUTHORIZED)) 2324 continue; 2325 2326 ht_dbg(sdata, "Sending SMPS to %pM\n", sta->sta.addr); 2327 ieee80211_send_smps_action(sdata, smps_mode, sta->sta.addr, 2328 sdata->vif.bss_conf.bssid); 2329 } 2330 mutex_unlock(&sdata->local->sta_mtx); 2331 2332 sdata->smps_mode = smps_mode; 2333 ieee80211_queue_work(&sdata->local->hw, &sdata->recalc_smps); 2334 2335 return 0; 2336 } 2337 2338 int __ieee80211_request_smps_mgd(struct ieee80211_sub_if_data *sdata, 2339 enum ieee80211_smps_mode smps_mode) 2340 { 2341 const u8 *ap; 2342 enum ieee80211_smps_mode old_req; 2343 int err; 2344 struct sta_info *sta; 2345 bool tdls_peer_found = false; 2346 2347 lockdep_assert_held(&sdata->wdev.mtx); 2348 2349 if (WARN_ON_ONCE(sdata->vif.type != NL80211_IFTYPE_STATION)) 2350 return -EINVAL; 2351 2352 old_req = sdata->u.mgd.req_smps; 2353 sdata->u.mgd.req_smps = smps_mode; 2354 2355 if (old_req == smps_mode && 2356 smps_mode != IEEE80211_SMPS_AUTOMATIC) 2357 return 0; 2358 2359 /* 2360 * If not associated, or current association is not an HT 2361 * association, there's no need to do anything, just store 2362 * the new value until we associate. 2363 */ 2364 if (!sdata->u.mgd.associated || 2365 sdata->vif.bss_conf.chandef.width == NL80211_CHAN_WIDTH_20_NOHT) 2366 return 0; 2367 2368 ap = sdata->u.mgd.associated->bssid; 2369 2370 rcu_read_lock(); 2371 list_for_each_entry_rcu(sta, &sdata->local->sta_list, list) { 2372 if (!sta->sta.tdls || sta->sdata != sdata || !sta->uploaded || 2373 !test_sta_flag(sta, WLAN_STA_AUTHORIZED)) 2374 continue; 2375 2376 tdls_peer_found = true; 2377 break; 2378 } 2379 rcu_read_unlock(); 2380 2381 if (smps_mode == IEEE80211_SMPS_AUTOMATIC) { 2382 if (tdls_peer_found || !sdata->u.mgd.powersave) 2383 smps_mode = IEEE80211_SMPS_OFF; 2384 else 2385 smps_mode = IEEE80211_SMPS_DYNAMIC; 2386 } 2387 2388 /* send SM PS frame to AP */ 2389 err = ieee80211_send_smps_action(sdata, smps_mode, 2390 ap, ap); 2391 if (err) 2392 sdata->u.mgd.req_smps = old_req; 2393 else if (smps_mode != IEEE80211_SMPS_OFF && tdls_peer_found) 2394 ieee80211_teardown_tdls_peers(sdata); 2395 2396 return err; 2397 } 2398 2399 static int ieee80211_set_power_mgmt(struct wiphy *wiphy, struct net_device *dev, 2400 bool enabled, int timeout) 2401 { 2402 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 2403 struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr); 2404 2405 if (sdata->vif.type != NL80211_IFTYPE_STATION) 2406 return -EOPNOTSUPP; 2407 2408 if (!ieee80211_hw_check(&local->hw, SUPPORTS_PS)) 2409 return -EOPNOTSUPP; 2410 2411 if (enabled == sdata->u.mgd.powersave && 2412 timeout == local->dynamic_ps_forced_timeout) 2413 return 0; 2414 2415 sdata->u.mgd.powersave = enabled; 2416 local->dynamic_ps_forced_timeout = timeout; 2417 2418 /* no change, but if automatic follow powersave */ 2419 sdata_lock(sdata); 2420 __ieee80211_request_smps_mgd(sdata, sdata->u.mgd.req_smps); 2421 sdata_unlock(sdata); 2422 2423 if (ieee80211_hw_check(&local->hw, SUPPORTS_DYNAMIC_PS)) 2424 ieee80211_hw_config(local, IEEE80211_CONF_CHANGE_PS); 2425 2426 ieee80211_recalc_ps(local); 2427 ieee80211_recalc_ps_vif(sdata); 2428 2429 return 0; 2430 } 2431 2432 static int ieee80211_set_cqm_rssi_config(struct wiphy *wiphy, 2433 struct net_device *dev, 2434 s32 rssi_thold, u32 rssi_hyst) 2435 { 2436 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 2437 struct ieee80211_vif *vif = &sdata->vif; 2438 struct ieee80211_bss_conf *bss_conf = &vif->bss_conf; 2439 2440 if (rssi_thold == bss_conf->cqm_rssi_thold && 2441 rssi_hyst == bss_conf->cqm_rssi_hyst) 2442 return 0; 2443 2444 if (sdata->vif.driver_flags & IEEE80211_VIF_BEACON_FILTER && 2445 !(sdata->vif.driver_flags & IEEE80211_VIF_SUPPORTS_CQM_RSSI)) 2446 return -EOPNOTSUPP; 2447 2448 bss_conf->cqm_rssi_thold = rssi_thold; 2449 bss_conf->cqm_rssi_hyst = rssi_hyst; 2450 sdata->u.mgd.last_cqm_event_signal = 0; 2451 2452 /* tell the driver upon association, unless already associated */ 2453 if (sdata->u.mgd.associated && 2454 sdata->vif.driver_flags & IEEE80211_VIF_SUPPORTS_CQM_RSSI) 2455 ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_CQM); 2456 2457 return 0; 2458 } 2459 2460 static int ieee80211_set_bitrate_mask(struct wiphy *wiphy, 2461 struct net_device *dev, 2462 const u8 *addr, 2463 const struct cfg80211_bitrate_mask *mask) 2464 { 2465 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 2466 struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr); 2467 int i, ret; 2468 2469 if (!ieee80211_sdata_running(sdata)) 2470 return -ENETDOWN; 2471 2472 if (ieee80211_hw_check(&local->hw, HAS_RATE_CONTROL)) { 2473 ret = drv_set_bitrate_mask(local, sdata, mask); 2474 if (ret) 2475 return ret; 2476 } 2477 2478 for (i = 0; i < IEEE80211_NUM_BANDS; i++) { 2479 struct ieee80211_supported_band *sband = wiphy->bands[i]; 2480 int j; 2481 2482 sdata->rc_rateidx_mask[i] = mask->control[i].legacy; 2483 memcpy(sdata->rc_rateidx_mcs_mask[i], mask->control[i].ht_mcs, 2484 sizeof(mask->control[i].ht_mcs)); 2485 memcpy(sdata->rc_rateidx_vht_mcs_mask[i], 2486 mask->control[i].vht_mcs, 2487 sizeof(mask->control[i].vht_mcs)); 2488 2489 sdata->rc_has_mcs_mask[i] = false; 2490 sdata->rc_has_vht_mcs_mask[i] = false; 2491 if (!sband) 2492 continue; 2493 2494 for (j = 0; j < IEEE80211_HT_MCS_MASK_LEN; j++) { 2495 if (~sdata->rc_rateidx_mcs_mask[i][j]) { 2496 sdata->rc_has_mcs_mask[i] = true; 2497 break; 2498 } 2499 } 2500 2501 for (j = 0; j < NL80211_VHT_NSS_MAX; j++) { 2502 if (~sdata->rc_rateidx_vht_mcs_mask[i][j]) { 2503 sdata->rc_has_vht_mcs_mask[i] = true; 2504 break; 2505 } 2506 } 2507 } 2508 2509 return 0; 2510 } 2511 2512 static bool ieee80211_coalesce_started_roc(struct ieee80211_local *local, 2513 struct ieee80211_roc_work *new_roc, 2514 struct ieee80211_roc_work *cur_roc) 2515 { 2516 unsigned long now = jiffies; 2517 unsigned long remaining = cur_roc->hw_start_time + 2518 msecs_to_jiffies(cur_roc->duration) - 2519 now; 2520 2521 if (WARN_ON(!cur_roc->started || !cur_roc->hw_begun)) 2522 return false; 2523 2524 /* if it doesn't fit entirely, schedule a new one */ 2525 if (new_roc->duration > jiffies_to_msecs(remaining)) 2526 return false; 2527 2528 ieee80211_handle_roc_started(new_roc); 2529 2530 /* add to dependents so we send the expired event properly */ 2531 list_add_tail(&new_roc->list, &cur_roc->dependents); 2532 return true; 2533 } 2534 2535 static u64 ieee80211_mgmt_tx_cookie(struct ieee80211_local *local) 2536 { 2537 lockdep_assert_held(&local->mtx); 2538 2539 local->roc_cookie_counter++; 2540 2541 /* wow, you wrapped 64 bits ... more likely a bug */ 2542 if (WARN_ON(local->roc_cookie_counter == 0)) 2543 local->roc_cookie_counter++; 2544 2545 return local->roc_cookie_counter; 2546 } 2547 2548 static int ieee80211_start_roc_work(struct ieee80211_local *local, 2549 struct ieee80211_sub_if_data *sdata, 2550 struct ieee80211_channel *channel, 2551 unsigned int duration, u64 *cookie, 2552 struct sk_buff *txskb, 2553 enum ieee80211_roc_type type) 2554 { 2555 struct ieee80211_roc_work *roc, *tmp; 2556 bool queued = false; 2557 int ret; 2558 2559 lockdep_assert_held(&local->mtx); 2560 2561 if (local->use_chanctx && !local->ops->remain_on_channel) 2562 return -EOPNOTSUPP; 2563 2564 roc = kzalloc(sizeof(*roc), GFP_KERNEL); 2565 if (!roc) 2566 return -ENOMEM; 2567 2568 /* 2569 * If the duration is zero, then the driver 2570 * wouldn't actually do anything. Set it to 2571 * 10 for now. 2572 * 2573 * TODO: cancel the off-channel operation 2574 * when we get the SKB's TX status and 2575 * the wait time was zero before. 2576 */ 2577 if (!duration) 2578 duration = 10; 2579 2580 roc->chan = channel; 2581 roc->duration = duration; 2582 roc->req_duration = duration; 2583 roc->frame = txskb; 2584 roc->type = type; 2585 roc->sdata = sdata; 2586 INIT_DELAYED_WORK(&roc->work, ieee80211_sw_roc_work); 2587 INIT_LIST_HEAD(&roc->dependents); 2588 2589 /* 2590 * cookie is either the roc cookie (for normal roc) 2591 * or the SKB (for mgmt TX) 2592 */ 2593 if (!txskb) { 2594 roc->cookie = ieee80211_mgmt_tx_cookie(local); 2595 *cookie = roc->cookie; 2596 } else { 2597 roc->mgmt_tx_cookie = *cookie; 2598 } 2599 2600 /* if there's one pending or we're scanning, queue this one */ 2601 if (!list_empty(&local->roc_list) || 2602 local->scanning || ieee80211_is_radar_required(local)) 2603 goto out_check_combine; 2604 2605 /* if not HW assist, just queue & schedule work */ 2606 if (!local->ops->remain_on_channel) { 2607 ieee80211_queue_delayed_work(&local->hw, &roc->work, 0); 2608 goto out_queue; 2609 } 2610 2611 /* otherwise actually kick it off here (for error handling) */ 2612 2613 ret = drv_remain_on_channel(local, sdata, channel, duration, type); 2614 if (ret) { 2615 kfree(roc); 2616 return ret; 2617 } 2618 2619 roc->started = true; 2620 goto out_queue; 2621 2622 out_check_combine: 2623 list_for_each_entry(tmp, &local->roc_list, list) { 2624 if (tmp->chan != channel || tmp->sdata != sdata) 2625 continue; 2626 2627 /* 2628 * Extend this ROC if possible: 2629 * 2630 * If it hasn't started yet, just increase the duration 2631 * and add the new one to the list of dependents. 2632 * If the type of the new ROC has higher priority, modify the 2633 * type of the previous one to match that of the new one. 2634 */ 2635 if (!tmp->started) { 2636 list_add_tail(&roc->list, &tmp->dependents); 2637 tmp->duration = max(tmp->duration, roc->duration); 2638 tmp->type = max(tmp->type, roc->type); 2639 queued = true; 2640 break; 2641 } 2642 2643 /* If it has already started, it's more difficult ... */ 2644 if (local->ops->remain_on_channel) { 2645 /* 2646 * In the offloaded ROC case, if it hasn't begun, add 2647 * this new one to the dependent list to be handled 2648 * when the master one begins. If it has begun, 2649 * check if it fits entirely within the existing one, 2650 * in which case it will just be dependent as well. 2651 * Otherwise, schedule it by itself. 2652 */ 2653 if (!tmp->hw_begun) { 2654 list_add_tail(&roc->list, &tmp->dependents); 2655 queued = true; 2656 break; 2657 } 2658 2659 if (ieee80211_coalesce_started_roc(local, roc, tmp)) 2660 queued = true; 2661 } else if (del_timer_sync(&tmp->work.timer)) { 2662 unsigned long new_end; 2663 2664 /* 2665 * In the software ROC case, cancel the timer, if 2666 * that fails then the finish work is already 2667 * queued/pending and thus we queue the new ROC 2668 * normally, if that succeeds then we can extend 2669 * the timer duration and TX the frame (if any.) 2670 */ 2671 2672 list_add_tail(&roc->list, &tmp->dependents); 2673 queued = true; 2674 2675 new_end = jiffies + msecs_to_jiffies(roc->duration); 2676 2677 /* ok, it was started & we canceled timer */ 2678 if (time_after(new_end, tmp->work.timer.expires)) 2679 mod_timer(&tmp->work.timer, new_end); 2680 else 2681 add_timer(&tmp->work.timer); 2682 2683 ieee80211_handle_roc_started(roc); 2684 } 2685 break; 2686 } 2687 2688 out_queue: 2689 if (!queued) 2690 list_add_tail(&roc->list, &local->roc_list); 2691 2692 return 0; 2693 } 2694 2695 static int ieee80211_remain_on_channel(struct wiphy *wiphy, 2696 struct wireless_dev *wdev, 2697 struct ieee80211_channel *chan, 2698 unsigned int duration, 2699 u64 *cookie) 2700 { 2701 struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev); 2702 struct ieee80211_local *local = sdata->local; 2703 int ret; 2704 2705 mutex_lock(&local->mtx); 2706 ret = ieee80211_start_roc_work(local, sdata, chan, 2707 duration, cookie, NULL, 2708 IEEE80211_ROC_TYPE_NORMAL); 2709 mutex_unlock(&local->mtx); 2710 2711 return ret; 2712 } 2713 2714 static int ieee80211_cancel_roc(struct ieee80211_local *local, 2715 u64 cookie, bool mgmt_tx) 2716 { 2717 struct ieee80211_roc_work *roc, *tmp, *found = NULL; 2718 int ret; 2719 2720 mutex_lock(&local->mtx); 2721 list_for_each_entry_safe(roc, tmp, &local->roc_list, list) { 2722 struct ieee80211_roc_work *dep, *tmp2; 2723 2724 list_for_each_entry_safe(dep, tmp2, &roc->dependents, list) { 2725 if (!mgmt_tx && dep->cookie != cookie) 2726 continue; 2727 else if (mgmt_tx && dep->mgmt_tx_cookie != cookie) 2728 continue; 2729 /* found dependent item -- just remove it */ 2730 list_del(&dep->list); 2731 mutex_unlock(&local->mtx); 2732 2733 ieee80211_roc_notify_destroy(dep, true); 2734 return 0; 2735 } 2736 2737 if (!mgmt_tx && roc->cookie != cookie) 2738 continue; 2739 else if (mgmt_tx && roc->mgmt_tx_cookie != cookie) 2740 continue; 2741 2742 found = roc; 2743 break; 2744 } 2745 2746 if (!found) { 2747 mutex_unlock(&local->mtx); 2748 return -ENOENT; 2749 } 2750 2751 /* 2752 * We found the item to cancel, so do that. Note that it 2753 * may have dependents, which we also cancel (and send 2754 * the expired signal for.) Not doing so would be quite 2755 * tricky here, but we may need to fix it later. 2756 */ 2757 2758 if (local->ops->remain_on_channel) { 2759 if (found->started) { 2760 ret = drv_cancel_remain_on_channel(local); 2761 if (WARN_ON_ONCE(ret)) { 2762 mutex_unlock(&local->mtx); 2763 return ret; 2764 } 2765 } 2766 2767 list_del(&found->list); 2768 2769 if (found->started) 2770 ieee80211_start_next_roc(local); 2771 mutex_unlock(&local->mtx); 2772 2773 ieee80211_roc_notify_destroy(found, true); 2774 } else { 2775 /* work may be pending so use it all the time */ 2776 found->abort = true; 2777 ieee80211_queue_delayed_work(&local->hw, &found->work, 0); 2778 2779 mutex_unlock(&local->mtx); 2780 2781 /* work will clean up etc */ 2782 flush_delayed_work(&found->work); 2783 WARN_ON(!found->to_be_freed); 2784 kfree(found); 2785 } 2786 2787 return 0; 2788 } 2789 2790 static int ieee80211_cancel_remain_on_channel(struct wiphy *wiphy, 2791 struct wireless_dev *wdev, 2792 u64 cookie) 2793 { 2794 struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev); 2795 struct ieee80211_local *local = sdata->local; 2796 2797 return ieee80211_cancel_roc(local, cookie, false); 2798 } 2799 2800 static int ieee80211_start_radar_detection(struct wiphy *wiphy, 2801 struct net_device *dev, 2802 struct cfg80211_chan_def *chandef, 2803 u32 cac_time_ms) 2804 { 2805 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 2806 struct ieee80211_local *local = sdata->local; 2807 int err; 2808 2809 mutex_lock(&local->mtx); 2810 if (!list_empty(&local->roc_list) || local->scanning) { 2811 err = -EBUSY; 2812 goto out_unlock; 2813 } 2814 2815 /* whatever, but channel contexts should not complain about that one */ 2816 sdata->smps_mode = IEEE80211_SMPS_OFF; 2817 sdata->needed_rx_chains = local->rx_chains; 2818 2819 err = ieee80211_vif_use_channel(sdata, chandef, 2820 IEEE80211_CHANCTX_SHARED); 2821 if (err) 2822 goto out_unlock; 2823 2824 ieee80211_queue_delayed_work(&sdata->local->hw, 2825 &sdata->dfs_cac_timer_work, 2826 msecs_to_jiffies(cac_time_ms)); 2827 2828 out_unlock: 2829 mutex_unlock(&local->mtx); 2830 return err; 2831 } 2832 2833 static struct cfg80211_beacon_data * 2834 cfg80211_beacon_dup(struct cfg80211_beacon_data *beacon) 2835 { 2836 struct cfg80211_beacon_data *new_beacon; 2837 u8 *pos; 2838 int len; 2839 2840 len = beacon->head_len + beacon->tail_len + beacon->beacon_ies_len + 2841 beacon->proberesp_ies_len + beacon->assocresp_ies_len + 2842 beacon->probe_resp_len; 2843 2844 new_beacon = kzalloc(sizeof(*new_beacon) + len, GFP_KERNEL); 2845 if (!new_beacon) 2846 return NULL; 2847 2848 pos = (u8 *)(new_beacon + 1); 2849 if (beacon->head_len) { 2850 new_beacon->head_len = beacon->head_len; 2851 new_beacon->head = pos; 2852 memcpy(pos, beacon->head, beacon->head_len); 2853 pos += beacon->head_len; 2854 } 2855 if (beacon->tail_len) { 2856 new_beacon->tail_len = beacon->tail_len; 2857 new_beacon->tail = pos; 2858 memcpy(pos, beacon->tail, beacon->tail_len); 2859 pos += beacon->tail_len; 2860 } 2861 if (beacon->beacon_ies_len) { 2862 new_beacon->beacon_ies_len = beacon->beacon_ies_len; 2863 new_beacon->beacon_ies = pos; 2864 memcpy(pos, beacon->beacon_ies, beacon->beacon_ies_len); 2865 pos += beacon->beacon_ies_len; 2866 } 2867 if (beacon->proberesp_ies_len) { 2868 new_beacon->proberesp_ies_len = beacon->proberesp_ies_len; 2869 new_beacon->proberesp_ies = pos; 2870 memcpy(pos, beacon->proberesp_ies, beacon->proberesp_ies_len); 2871 pos += beacon->proberesp_ies_len; 2872 } 2873 if (beacon->assocresp_ies_len) { 2874 new_beacon->assocresp_ies_len = beacon->assocresp_ies_len; 2875 new_beacon->assocresp_ies = pos; 2876 memcpy(pos, beacon->assocresp_ies, beacon->assocresp_ies_len); 2877 pos += beacon->assocresp_ies_len; 2878 } 2879 if (beacon->probe_resp_len) { 2880 new_beacon->probe_resp_len = beacon->probe_resp_len; 2881 beacon->probe_resp = pos; 2882 memcpy(pos, beacon->probe_resp, beacon->probe_resp_len); 2883 pos += beacon->probe_resp_len; 2884 } 2885 2886 return new_beacon; 2887 } 2888 2889 void ieee80211_csa_finish(struct ieee80211_vif *vif) 2890 { 2891 struct ieee80211_sub_if_data *sdata = vif_to_sdata(vif); 2892 2893 ieee80211_queue_work(&sdata->local->hw, 2894 &sdata->csa_finalize_work); 2895 } 2896 EXPORT_SYMBOL(ieee80211_csa_finish); 2897 2898 static int ieee80211_set_after_csa_beacon(struct ieee80211_sub_if_data *sdata, 2899 u32 *changed) 2900 { 2901 int err; 2902 2903 switch (sdata->vif.type) { 2904 case NL80211_IFTYPE_AP: 2905 err = ieee80211_assign_beacon(sdata, sdata->u.ap.next_beacon, 2906 NULL); 2907 kfree(sdata->u.ap.next_beacon); 2908 sdata->u.ap.next_beacon = NULL; 2909 2910 if (err < 0) 2911 return err; 2912 *changed |= err; 2913 break; 2914 case NL80211_IFTYPE_ADHOC: 2915 err = ieee80211_ibss_finish_csa(sdata); 2916 if (err < 0) 2917 return err; 2918 *changed |= err; 2919 break; 2920 #ifdef CONFIG_MAC80211_MESH 2921 case NL80211_IFTYPE_MESH_POINT: 2922 err = ieee80211_mesh_finish_csa(sdata); 2923 if (err < 0) 2924 return err; 2925 *changed |= err; 2926 break; 2927 #endif 2928 default: 2929 WARN_ON(1); 2930 return -EINVAL; 2931 } 2932 2933 return 0; 2934 } 2935 2936 static int __ieee80211_csa_finalize(struct ieee80211_sub_if_data *sdata) 2937 { 2938 struct ieee80211_local *local = sdata->local; 2939 u32 changed = 0; 2940 int err; 2941 2942 sdata_assert_lock(sdata); 2943 lockdep_assert_held(&local->mtx); 2944 lockdep_assert_held(&local->chanctx_mtx); 2945 2946 /* 2947 * using reservation isn't immediate as it may be deferred until later 2948 * with multi-vif. once reservation is complete it will re-schedule the 2949 * work with no reserved_chanctx so verify chandef to check if it 2950 * completed successfully 2951 */ 2952 2953 if (sdata->reserved_chanctx) { 2954 /* 2955 * with multi-vif csa driver may call ieee80211_csa_finish() 2956 * many times while waiting for other interfaces to use their 2957 * reservations 2958 */ 2959 if (sdata->reserved_ready) 2960 return 0; 2961 2962 return ieee80211_vif_use_reserved_context(sdata); 2963 } 2964 2965 if (!cfg80211_chandef_identical(&sdata->vif.bss_conf.chandef, 2966 &sdata->csa_chandef)) 2967 return -EINVAL; 2968 2969 sdata->vif.csa_active = false; 2970 2971 err = ieee80211_set_after_csa_beacon(sdata, &changed); 2972 if (err) 2973 return err; 2974 2975 ieee80211_bss_info_change_notify(sdata, changed); 2976 2977 if (sdata->csa_block_tx) { 2978 ieee80211_wake_vif_queues(local, sdata, 2979 IEEE80211_QUEUE_STOP_REASON_CSA); 2980 sdata->csa_block_tx = false; 2981 } 2982 2983 err = drv_post_channel_switch(sdata); 2984 if (err) 2985 return err; 2986 2987 cfg80211_ch_switch_notify(sdata->dev, &sdata->csa_chandef); 2988 2989 return 0; 2990 } 2991 2992 static void ieee80211_csa_finalize(struct ieee80211_sub_if_data *sdata) 2993 { 2994 if (__ieee80211_csa_finalize(sdata)) { 2995 sdata_info(sdata, "failed to finalize CSA, disconnecting\n"); 2996 cfg80211_stop_iface(sdata->local->hw.wiphy, &sdata->wdev, 2997 GFP_KERNEL); 2998 } 2999 } 3000 3001 void ieee80211_csa_finalize_work(struct work_struct *work) 3002 { 3003 struct ieee80211_sub_if_data *sdata = 3004 container_of(work, struct ieee80211_sub_if_data, 3005 csa_finalize_work); 3006 struct ieee80211_local *local = sdata->local; 3007 3008 sdata_lock(sdata); 3009 mutex_lock(&local->mtx); 3010 mutex_lock(&local->chanctx_mtx); 3011 3012 /* AP might have been stopped while waiting for the lock. */ 3013 if (!sdata->vif.csa_active) 3014 goto unlock; 3015 3016 if (!ieee80211_sdata_running(sdata)) 3017 goto unlock; 3018 3019 ieee80211_csa_finalize(sdata); 3020 3021 unlock: 3022 mutex_unlock(&local->chanctx_mtx); 3023 mutex_unlock(&local->mtx); 3024 sdata_unlock(sdata); 3025 } 3026 3027 static int ieee80211_set_csa_beacon(struct ieee80211_sub_if_data *sdata, 3028 struct cfg80211_csa_settings *params, 3029 u32 *changed) 3030 { 3031 struct ieee80211_csa_settings csa = {}; 3032 int err; 3033 3034 switch (sdata->vif.type) { 3035 case NL80211_IFTYPE_AP: 3036 sdata->u.ap.next_beacon = 3037 cfg80211_beacon_dup(¶ms->beacon_after); 3038 if (!sdata->u.ap.next_beacon) 3039 return -ENOMEM; 3040 3041 /* 3042 * With a count of 0, we don't have to wait for any 3043 * TBTT before switching, so complete the CSA 3044 * immediately. In theory, with a count == 1 we 3045 * should delay the switch until just before the next 3046 * TBTT, but that would complicate things so we switch 3047 * immediately too. If we would delay the switch 3048 * until the next TBTT, we would have to set the probe 3049 * response here. 3050 * 3051 * TODO: A channel switch with count <= 1 without 3052 * sending a CSA action frame is kind of useless, 3053 * because the clients won't know we're changing 3054 * channels. The action frame must be implemented 3055 * either here or in the userspace. 3056 */ 3057 if (params->count <= 1) 3058 break; 3059 3060 if ((params->n_counter_offsets_beacon > 3061 IEEE80211_MAX_CSA_COUNTERS_NUM) || 3062 (params->n_counter_offsets_presp > 3063 IEEE80211_MAX_CSA_COUNTERS_NUM)) 3064 return -EINVAL; 3065 3066 csa.counter_offsets_beacon = params->counter_offsets_beacon; 3067 csa.counter_offsets_presp = params->counter_offsets_presp; 3068 csa.n_counter_offsets_beacon = params->n_counter_offsets_beacon; 3069 csa.n_counter_offsets_presp = params->n_counter_offsets_presp; 3070 csa.count = params->count; 3071 3072 err = ieee80211_assign_beacon(sdata, ¶ms->beacon_csa, &csa); 3073 if (err < 0) { 3074 kfree(sdata->u.ap.next_beacon); 3075 return err; 3076 } 3077 *changed |= err; 3078 3079 break; 3080 case NL80211_IFTYPE_ADHOC: 3081 if (!sdata->vif.bss_conf.ibss_joined) 3082 return -EINVAL; 3083 3084 if (params->chandef.width != sdata->u.ibss.chandef.width) 3085 return -EINVAL; 3086 3087 switch (params->chandef.width) { 3088 case NL80211_CHAN_WIDTH_40: 3089 if (cfg80211_get_chandef_type(¶ms->chandef) != 3090 cfg80211_get_chandef_type(&sdata->u.ibss.chandef)) 3091 return -EINVAL; 3092 case NL80211_CHAN_WIDTH_5: 3093 case NL80211_CHAN_WIDTH_10: 3094 case NL80211_CHAN_WIDTH_20_NOHT: 3095 case NL80211_CHAN_WIDTH_20: 3096 break; 3097 default: 3098 return -EINVAL; 3099 } 3100 3101 /* changes into another band are not supported */ 3102 if (sdata->u.ibss.chandef.chan->band != 3103 params->chandef.chan->band) 3104 return -EINVAL; 3105 3106 /* see comments in the NL80211_IFTYPE_AP block */ 3107 if (params->count > 1) { 3108 err = ieee80211_ibss_csa_beacon(sdata, params); 3109 if (err < 0) 3110 return err; 3111 *changed |= err; 3112 } 3113 3114 ieee80211_send_action_csa(sdata, params); 3115 3116 break; 3117 #ifdef CONFIG_MAC80211_MESH 3118 case NL80211_IFTYPE_MESH_POINT: { 3119 struct ieee80211_if_mesh *ifmsh = &sdata->u.mesh; 3120 3121 if (params->chandef.width != sdata->vif.bss_conf.chandef.width) 3122 return -EINVAL; 3123 3124 /* changes into another band are not supported */ 3125 if (sdata->vif.bss_conf.chandef.chan->band != 3126 params->chandef.chan->band) 3127 return -EINVAL; 3128 3129 if (ifmsh->csa_role == IEEE80211_MESH_CSA_ROLE_NONE) { 3130 ifmsh->csa_role = IEEE80211_MESH_CSA_ROLE_INIT; 3131 if (!ifmsh->pre_value) 3132 ifmsh->pre_value = 1; 3133 else 3134 ifmsh->pre_value++; 3135 } 3136 3137 /* see comments in the NL80211_IFTYPE_AP block */ 3138 if (params->count > 1) { 3139 err = ieee80211_mesh_csa_beacon(sdata, params); 3140 if (err < 0) { 3141 ifmsh->csa_role = IEEE80211_MESH_CSA_ROLE_NONE; 3142 return err; 3143 } 3144 *changed |= err; 3145 } 3146 3147 if (ifmsh->csa_role == IEEE80211_MESH_CSA_ROLE_INIT) 3148 ieee80211_send_action_csa(sdata, params); 3149 3150 break; 3151 } 3152 #endif 3153 default: 3154 return -EOPNOTSUPP; 3155 } 3156 3157 return 0; 3158 } 3159 3160 static int 3161 __ieee80211_channel_switch(struct wiphy *wiphy, struct net_device *dev, 3162 struct cfg80211_csa_settings *params) 3163 { 3164 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 3165 struct ieee80211_local *local = sdata->local; 3166 struct ieee80211_channel_switch ch_switch; 3167 struct ieee80211_chanctx_conf *conf; 3168 struct ieee80211_chanctx *chanctx; 3169 u32 changed = 0; 3170 int err; 3171 3172 sdata_assert_lock(sdata); 3173 lockdep_assert_held(&local->mtx); 3174 3175 if (!list_empty(&local->roc_list) || local->scanning) 3176 return -EBUSY; 3177 3178 if (sdata->wdev.cac_started) 3179 return -EBUSY; 3180 3181 if (cfg80211_chandef_identical(¶ms->chandef, 3182 &sdata->vif.bss_conf.chandef)) 3183 return -EINVAL; 3184 3185 /* don't allow another channel switch if one is already active. */ 3186 if (sdata->vif.csa_active) 3187 return -EBUSY; 3188 3189 mutex_lock(&local->chanctx_mtx); 3190 conf = rcu_dereference_protected(sdata->vif.chanctx_conf, 3191 lockdep_is_held(&local->chanctx_mtx)); 3192 if (!conf) { 3193 err = -EBUSY; 3194 goto out; 3195 } 3196 3197 chanctx = container_of(conf, struct ieee80211_chanctx, conf); 3198 if (!chanctx) { 3199 err = -EBUSY; 3200 goto out; 3201 } 3202 3203 ch_switch.timestamp = 0; 3204 ch_switch.device_timestamp = 0; 3205 ch_switch.block_tx = params->block_tx; 3206 ch_switch.chandef = params->chandef; 3207 ch_switch.count = params->count; 3208 3209 err = drv_pre_channel_switch(sdata, &ch_switch); 3210 if (err) 3211 goto out; 3212 3213 err = ieee80211_vif_reserve_chanctx(sdata, ¶ms->chandef, 3214 chanctx->mode, 3215 params->radar_required); 3216 if (err) 3217 goto out; 3218 3219 /* if reservation is invalid then this will fail */ 3220 err = ieee80211_check_combinations(sdata, NULL, chanctx->mode, 0); 3221 if (err) { 3222 ieee80211_vif_unreserve_chanctx(sdata); 3223 goto out; 3224 } 3225 3226 err = ieee80211_set_csa_beacon(sdata, params, &changed); 3227 if (err) { 3228 ieee80211_vif_unreserve_chanctx(sdata); 3229 goto out; 3230 } 3231 3232 sdata->csa_chandef = params->chandef; 3233 sdata->csa_block_tx = params->block_tx; 3234 sdata->vif.csa_active = true; 3235 3236 if (sdata->csa_block_tx) 3237 ieee80211_stop_vif_queues(local, sdata, 3238 IEEE80211_QUEUE_STOP_REASON_CSA); 3239 3240 cfg80211_ch_switch_started_notify(sdata->dev, &sdata->csa_chandef, 3241 params->count); 3242 3243 if (changed) { 3244 ieee80211_bss_info_change_notify(sdata, changed); 3245 drv_channel_switch_beacon(sdata, ¶ms->chandef); 3246 } else { 3247 /* if the beacon didn't change, we can finalize immediately */ 3248 ieee80211_csa_finalize(sdata); 3249 } 3250 3251 out: 3252 mutex_unlock(&local->chanctx_mtx); 3253 return err; 3254 } 3255 3256 int ieee80211_channel_switch(struct wiphy *wiphy, struct net_device *dev, 3257 struct cfg80211_csa_settings *params) 3258 { 3259 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 3260 struct ieee80211_local *local = sdata->local; 3261 int err; 3262 3263 mutex_lock(&local->mtx); 3264 err = __ieee80211_channel_switch(wiphy, dev, params); 3265 mutex_unlock(&local->mtx); 3266 3267 return err; 3268 } 3269 3270 static struct sk_buff *ieee80211_make_ack_skb(struct ieee80211_local *local, 3271 struct sk_buff *skb, u64 *cookie, 3272 gfp_t gfp) 3273 { 3274 unsigned long spin_flags; 3275 struct sk_buff *ack_skb; 3276 int id; 3277 3278 ack_skb = skb_copy(skb, gfp); 3279 if (!ack_skb) 3280 return ERR_PTR(-ENOMEM); 3281 3282 spin_lock_irqsave(&local->ack_status_lock, spin_flags); 3283 id = idr_alloc(&local->ack_status_frames, ack_skb, 3284 1, 0x10000, GFP_ATOMIC); 3285 spin_unlock_irqrestore(&local->ack_status_lock, spin_flags); 3286 3287 if (id < 0) { 3288 kfree_skb(ack_skb); 3289 return ERR_PTR(-ENOMEM); 3290 } 3291 3292 IEEE80211_SKB_CB(skb)->ack_frame_id = id; 3293 3294 *cookie = ieee80211_mgmt_tx_cookie(local); 3295 IEEE80211_SKB_CB(ack_skb)->ack.cookie = *cookie; 3296 3297 return ack_skb; 3298 } 3299 3300 static int ieee80211_mgmt_tx(struct wiphy *wiphy, struct wireless_dev *wdev, 3301 struct cfg80211_mgmt_tx_params *params, 3302 u64 *cookie) 3303 { 3304 struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev); 3305 struct ieee80211_local *local = sdata->local; 3306 struct sk_buff *skb, *ack_skb; 3307 struct sta_info *sta; 3308 const struct ieee80211_mgmt *mgmt = (void *)params->buf; 3309 bool need_offchan = false; 3310 u32 flags; 3311 int ret; 3312 u8 *data; 3313 3314 if (params->dont_wait_for_ack) 3315 flags = IEEE80211_TX_CTL_NO_ACK; 3316 else 3317 flags = IEEE80211_TX_INTFL_NL80211_FRAME_TX | 3318 IEEE80211_TX_CTL_REQ_TX_STATUS; 3319 3320 if (params->no_cck) 3321 flags |= IEEE80211_TX_CTL_NO_CCK_RATE; 3322 3323 switch (sdata->vif.type) { 3324 case NL80211_IFTYPE_ADHOC: 3325 if (!sdata->vif.bss_conf.ibss_joined) 3326 need_offchan = true; 3327 /* fall through */ 3328 #ifdef CONFIG_MAC80211_MESH 3329 case NL80211_IFTYPE_MESH_POINT: 3330 if (ieee80211_vif_is_mesh(&sdata->vif) && 3331 !sdata->u.mesh.mesh_id_len) 3332 need_offchan = true; 3333 /* fall through */ 3334 #endif 3335 case NL80211_IFTYPE_AP: 3336 case NL80211_IFTYPE_AP_VLAN: 3337 case NL80211_IFTYPE_P2P_GO: 3338 if (sdata->vif.type != NL80211_IFTYPE_ADHOC && 3339 !ieee80211_vif_is_mesh(&sdata->vif) && 3340 !rcu_access_pointer(sdata->bss->beacon)) 3341 need_offchan = true; 3342 if (!ieee80211_is_action(mgmt->frame_control) || 3343 mgmt->u.action.category == WLAN_CATEGORY_PUBLIC || 3344 mgmt->u.action.category == WLAN_CATEGORY_SELF_PROTECTED || 3345 mgmt->u.action.category == WLAN_CATEGORY_SPECTRUM_MGMT) 3346 break; 3347 rcu_read_lock(); 3348 sta = sta_info_get(sdata, mgmt->da); 3349 rcu_read_unlock(); 3350 if (!sta) 3351 return -ENOLINK; 3352 break; 3353 case NL80211_IFTYPE_STATION: 3354 case NL80211_IFTYPE_P2P_CLIENT: 3355 sdata_lock(sdata); 3356 if (!sdata->u.mgd.associated || 3357 (params->offchan && params->wait && 3358 local->ops->remain_on_channel && 3359 memcmp(sdata->u.mgd.associated->bssid, 3360 mgmt->bssid, ETH_ALEN))) 3361 need_offchan = true; 3362 sdata_unlock(sdata); 3363 break; 3364 case NL80211_IFTYPE_P2P_DEVICE: 3365 need_offchan = true; 3366 break; 3367 default: 3368 return -EOPNOTSUPP; 3369 } 3370 3371 /* configurations requiring offchan cannot work if no channel has been 3372 * specified 3373 */ 3374 if (need_offchan && !params->chan) 3375 return -EINVAL; 3376 3377 mutex_lock(&local->mtx); 3378 3379 /* Check if the operating channel is the requested channel */ 3380 if (!need_offchan) { 3381 struct ieee80211_chanctx_conf *chanctx_conf; 3382 3383 rcu_read_lock(); 3384 chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf); 3385 3386 if (chanctx_conf) { 3387 need_offchan = params->chan && 3388 (params->chan != 3389 chanctx_conf->def.chan); 3390 } else if (!params->chan) { 3391 ret = -EINVAL; 3392 rcu_read_unlock(); 3393 goto out_unlock; 3394 } else { 3395 need_offchan = true; 3396 } 3397 rcu_read_unlock(); 3398 } 3399 3400 if (need_offchan && !params->offchan) { 3401 ret = -EBUSY; 3402 goto out_unlock; 3403 } 3404 3405 skb = dev_alloc_skb(local->hw.extra_tx_headroom + params->len); 3406 if (!skb) { 3407 ret = -ENOMEM; 3408 goto out_unlock; 3409 } 3410 skb_reserve(skb, local->hw.extra_tx_headroom); 3411 3412 data = skb_put(skb, params->len); 3413 memcpy(data, params->buf, params->len); 3414 3415 /* Update CSA counters */ 3416 if (sdata->vif.csa_active && 3417 (sdata->vif.type == NL80211_IFTYPE_AP || 3418 sdata->vif.type == NL80211_IFTYPE_MESH_POINT || 3419 sdata->vif.type == NL80211_IFTYPE_ADHOC) && 3420 params->n_csa_offsets) { 3421 int i; 3422 struct beacon_data *beacon = NULL; 3423 3424 rcu_read_lock(); 3425 3426 if (sdata->vif.type == NL80211_IFTYPE_AP) 3427 beacon = rcu_dereference(sdata->u.ap.beacon); 3428 else if (sdata->vif.type == NL80211_IFTYPE_ADHOC) 3429 beacon = rcu_dereference(sdata->u.ibss.presp); 3430 else if (ieee80211_vif_is_mesh(&sdata->vif)) 3431 beacon = rcu_dereference(sdata->u.mesh.beacon); 3432 3433 if (beacon) 3434 for (i = 0; i < params->n_csa_offsets; i++) 3435 data[params->csa_offsets[i]] = 3436 beacon->csa_current_counter; 3437 3438 rcu_read_unlock(); 3439 } 3440 3441 IEEE80211_SKB_CB(skb)->flags = flags; 3442 3443 skb->dev = sdata->dev; 3444 3445 if (!params->dont_wait_for_ack) { 3446 /* make a copy to preserve the frame contents 3447 * in case of encryption. 3448 */ 3449 ack_skb = ieee80211_make_ack_skb(local, skb, cookie, 3450 GFP_KERNEL); 3451 if (IS_ERR(ack_skb)) { 3452 ret = PTR_ERR(ack_skb); 3453 kfree_skb(skb); 3454 goto out_unlock; 3455 } 3456 } else { 3457 /* Assign a dummy non-zero cookie, it's not sent to 3458 * userspace in this case but we rely on its value 3459 * internally in the need_offchan case to distinguish 3460 * mgmt-tx from remain-on-channel. 3461 */ 3462 *cookie = 0xffffffff; 3463 } 3464 3465 if (!need_offchan) { 3466 ieee80211_tx_skb(sdata, skb); 3467 ret = 0; 3468 goto out_unlock; 3469 } 3470 3471 IEEE80211_SKB_CB(skb)->flags |= IEEE80211_TX_CTL_TX_OFFCHAN | 3472 IEEE80211_TX_INTFL_OFFCHAN_TX_OK; 3473 if (ieee80211_hw_check(&local->hw, QUEUE_CONTROL)) 3474 IEEE80211_SKB_CB(skb)->hw_queue = 3475 local->hw.offchannel_tx_hw_queue; 3476 3477 /* This will handle all kinds of coalescing and immediate TX */ 3478 ret = ieee80211_start_roc_work(local, sdata, params->chan, 3479 params->wait, cookie, skb, 3480 IEEE80211_ROC_TYPE_MGMT_TX); 3481 if (ret) 3482 kfree_skb(skb); 3483 out_unlock: 3484 mutex_unlock(&local->mtx); 3485 return ret; 3486 } 3487 3488 static int ieee80211_mgmt_tx_cancel_wait(struct wiphy *wiphy, 3489 struct wireless_dev *wdev, 3490 u64 cookie) 3491 { 3492 struct ieee80211_local *local = wiphy_priv(wiphy); 3493 3494 return ieee80211_cancel_roc(local, cookie, true); 3495 } 3496 3497 static void ieee80211_mgmt_frame_register(struct wiphy *wiphy, 3498 struct wireless_dev *wdev, 3499 u16 frame_type, bool reg) 3500 { 3501 struct ieee80211_local *local = wiphy_priv(wiphy); 3502 struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev); 3503 3504 switch (frame_type) { 3505 case IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_PROBE_REQ: 3506 if (reg) { 3507 local->probe_req_reg++; 3508 sdata->vif.probe_req_reg++; 3509 } else { 3510 if (local->probe_req_reg) 3511 local->probe_req_reg--; 3512 3513 if (sdata->vif.probe_req_reg) 3514 sdata->vif.probe_req_reg--; 3515 } 3516 3517 if (!local->open_count) 3518 break; 3519 3520 if (sdata->vif.probe_req_reg == 1) 3521 drv_config_iface_filter(local, sdata, FIF_PROBE_REQ, 3522 FIF_PROBE_REQ); 3523 else if (sdata->vif.probe_req_reg == 0) 3524 drv_config_iface_filter(local, sdata, 0, 3525 FIF_PROBE_REQ); 3526 3527 ieee80211_configure_filter(local); 3528 break; 3529 default: 3530 break; 3531 } 3532 } 3533 3534 static int ieee80211_set_antenna(struct wiphy *wiphy, u32 tx_ant, u32 rx_ant) 3535 { 3536 struct ieee80211_local *local = wiphy_priv(wiphy); 3537 3538 if (local->started) 3539 return -EOPNOTSUPP; 3540 3541 return drv_set_antenna(local, tx_ant, rx_ant); 3542 } 3543 3544 static int ieee80211_get_antenna(struct wiphy *wiphy, u32 *tx_ant, u32 *rx_ant) 3545 { 3546 struct ieee80211_local *local = wiphy_priv(wiphy); 3547 3548 return drv_get_antenna(local, tx_ant, rx_ant); 3549 } 3550 3551 static int ieee80211_set_rekey_data(struct wiphy *wiphy, 3552 struct net_device *dev, 3553 struct cfg80211_gtk_rekey_data *data) 3554 { 3555 struct ieee80211_local *local = wiphy_priv(wiphy); 3556 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 3557 3558 if (!local->ops->set_rekey_data) 3559 return -EOPNOTSUPP; 3560 3561 drv_set_rekey_data(local, sdata, data); 3562 3563 return 0; 3564 } 3565 3566 static int ieee80211_probe_client(struct wiphy *wiphy, struct net_device *dev, 3567 const u8 *peer, u64 *cookie) 3568 { 3569 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 3570 struct ieee80211_local *local = sdata->local; 3571 struct ieee80211_qos_hdr *nullfunc; 3572 struct sk_buff *skb, *ack_skb; 3573 int size = sizeof(*nullfunc); 3574 __le16 fc; 3575 bool qos; 3576 struct ieee80211_tx_info *info; 3577 struct sta_info *sta; 3578 struct ieee80211_chanctx_conf *chanctx_conf; 3579 enum ieee80211_band band; 3580 int ret; 3581 3582 /* the lock is needed to assign the cookie later */ 3583 mutex_lock(&local->mtx); 3584 3585 rcu_read_lock(); 3586 chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf); 3587 if (WARN_ON(!chanctx_conf)) { 3588 ret = -EINVAL; 3589 goto unlock; 3590 } 3591 band = chanctx_conf->def.chan->band; 3592 sta = sta_info_get_bss(sdata, peer); 3593 if (sta) { 3594 qos = sta->sta.wme; 3595 } else { 3596 ret = -ENOLINK; 3597 goto unlock; 3598 } 3599 3600 if (qos) { 3601 fc = cpu_to_le16(IEEE80211_FTYPE_DATA | 3602 IEEE80211_STYPE_QOS_NULLFUNC | 3603 IEEE80211_FCTL_FROMDS); 3604 } else { 3605 size -= 2; 3606 fc = cpu_to_le16(IEEE80211_FTYPE_DATA | 3607 IEEE80211_STYPE_NULLFUNC | 3608 IEEE80211_FCTL_FROMDS); 3609 } 3610 3611 skb = dev_alloc_skb(local->hw.extra_tx_headroom + size); 3612 if (!skb) { 3613 ret = -ENOMEM; 3614 goto unlock; 3615 } 3616 3617 skb->dev = dev; 3618 3619 skb_reserve(skb, local->hw.extra_tx_headroom); 3620 3621 nullfunc = (void *) skb_put(skb, size); 3622 nullfunc->frame_control = fc; 3623 nullfunc->duration_id = 0; 3624 memcpy(nullfunc->addr1, sta->sta.addr, ETH_ALEN); 3625 memcpy(nullfunc->addr2, sdata->vif.addr, ETH_ALEN); 3626 memcpy(nullfunc->addr3, sdata->vif.addr, ETH_ALEN); 3627 nullfunc->seq_ctrl = 0; 3628 3629 info = IEEE80211_SKB_CB(skb); 3630 3631 info->flags |= IEEE80211_TX_CTL_REQ_TX_STATUS | 3632 IEEE80211_TX_INTFL_NL80211_FRAME_TX; 3633 info->band = band; 3634 3635 skb_set_queue_mapping(skb, IEEE80211_AC_VO); 3636 skb->priority = 7; 3637 if (qos) 3638 nullfunc->qos_ctrl = cpu_to_le16(7); 3639 3640 ack_skb = ieee80211_make_ack_skb(local, skb, cookie, GFP_ATOMIC); 3641 if (IS_ERR(ack_skb)) { 3642 kfree_skb(skb); 3643 ret = PTR_ERR(ack_skb); 3644 goto unlock; 3645 } 3646 3647 local_bh_disable(); 3648 ieee80211_xmit(sdata, sta, skb); 3649 local_bh_enable(); 3650 3651 ret = 0; 3652 unlock: 3653 rcu_read_unlock(); 3654 mutex_unlock(&local->mtx); 3655 3656 return ret; 3657 } 3658 3659 static int ieee80211_cfg_get_channel(struct wiphy *wiphy, 3660 struct wireless_dev *wdev, 3661 struct cfg80211_chan_def *chandef) 3662 { 3663 struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev); 3664 struct ieee80211_local *local = wiphy_priv(wiphy); 3665 struct ieee80211_chanctx_conf *chanctx_conf; 3666 int ret = -ENODATA; 3667 3668 rcu_read_lock(); 3669 chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf); 3670 if (chanctx_conf) { 3671 *chandef = sdata->vif.bss_conf.chandef; 3672 ret = 0; 3673 } else if (local->open_count > 0 && 3674 local->open_count == local->monitors && 3675 sdata->vif.type == NL80211_IFTYPE_MONITOR) { 3676 if (local->use_chanctx) 3677 *chandef = local->monitor_chandef; 3678 else 3679 *chandef = local->_oper_chandef; 3680 ret = 0; 3681 } 3682 rcu_read_unlock(); 3683 3684 return ret; 3685 } 3686 3687 #ifdef CONFIG_PM 3688 static void ieee80211_set_wakeup(struct wiphy *wiphy, bool enabled) 3689 { 3690 drv_set_wakeup(wiphy_priv(wiphy), enabled); 3691 } 3692 #endif 3693 3694 static int ieee80211_set_qos_map(struct wiphy *wiphy, 3695 struct net_device *dev, 3696 struct cfg80211_qos_map *qos_map) 3697 { 3698 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 3699 struct mac80211_qos_map *new_qos_map, *old_qos_map; 3700 3701 if (qos_map) { 3702 new_qos_map = kzalloc(sizeof(*new_qos_map), GFP_KERNEL); 3703 if (!new_qos_map) 3704 return -ENOMEM; 3705 memcpy(&new_qos_map->qos_map, qos_map, sizeof(*qos_map)); 3706 } else { 3707 /* A NULL qos_map was passed to disable QoS mapping */ 3708 new_qos_map = NULL; 3709 } 3710 3711 old_qos_map = sdata_dereference(sdata->qos_map, sdata); 3712 rcu_assign_pointer(sdata->qos_map, new_qos_map); 3713 if (old_qos_map) 3714 kfree_rcu(old_qos_map, rcu_head); 3715 3716 return 0; 3717 } 3718 3719 static int ieee80211_set_ap_chanwidth(struct wiphy *wiphy, 3720 struct net_device *dev, 3721 struct cfg80211_chan_def *chandef) 3722 { 3723 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 3724 int ret; 3725 u32 changed = 0; 3726 3727 ret = ieee80211_vif_change_bandwidth(sdata, chandef, &changed); 3728 if (ret == 0) 3729 ieee80211_bss_info_change_notify(sdata, changed); 3730 3731 return ret; 3732 } 3733 3734 static int ieee80211_add_tx_ts(struct wiphy *wiphy, struct net_device *dev, 3735 u8 tsid, const u8 *peer, u8 up, 3736 u16 admitted_time) 3737 { 3738 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 3739 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; 3740 int ac = ieee802_1d_to_ac[up]; 3741 3742 if (sdata->vif.type != NL80211_IFTYPE_STATION) 3743 return -EOPNOTSUPP; 3744 3745 if (!(sdata->wmm_acm & BIT(up))) 3746 return -EINVAL; 3747 3748 if (ifmgd->tx_tspec[ac].admitted_time) 3749 return -EBUSY; 3750 3751 if (admitted_time) { 3752 ifmgd->tx_tspec[ac].admitted_time = 32 * admitted_time; 3753 ifmgd->tx_tspec[ac].tsid = tsid; 3754 ifmgd->tx_tspec[ac].up = up; 3755 } 3756 3757 return 0; 3758 } 3759 3760 static int ieee80211_del_tx_ts(struct wiphy *wiphy, struct net_device *dev, 3761 u8 tsid, const u8 *peer) 3762 { 3763 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 3764 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; 3765 struct ieee80211_local *local = wiphy_priv(wiphy); 3766 int ac; 3767 3768 for (ac = 0; ac < IEEE80211_NUM_ACS; ac++) { 3769 struct ieee80211_sta_tx_tspec *tx_tspec = &ifmgd->tx_tspec[ac]; 3770 3771 /* skip unused entries */ 3772 if (!tx_tspec->admitted_time) 3773 continue; 3774 3775 if (tx_tspec->tsid != tsid) 3776 continue; 3777 3778 /* due to this new packets will be reassigned to non-ACM ACs */ 3779 tx_tspec->up = -1; 3780 3781 /* Make sure that all packets have been sent to avoid to 3782 * restore the QoS params on packets that are still on the 3783 * queues. 3784 */ 3785 synchronize_net(); 3786 ieee80211_flush_queues(local, sdata, false); 3787 3788 /* restore the normal QoS parameters 3789 * (unconditionally to avoid races) 3790 */ 3791 tx_tspec->action = TX_TSPEC_ACTION_STOP_DOWNGRADE; 3792 tx_tspec->downgraded = false; 3793 ieee80211_sta_handle_tspec_ac_params(sdata); 3794 3795 /* finally clear all the data */ 3796 memset(tx_tspec, 0, sizeof(*tx_tspec)); 3797 3798 return 0; 3799 } 3800 3801 return -ENOENT; 3802 } 3803 3804 const struct cfg80211_ops mac80211_config_ops = { 3805 .add_virtual_intf = ieee80211_add_iface, 3806 .del_virtual_intf = ieee80211_del_iface, 3807 .change_virtual_intf = ieee80211_change_iface, 3808 .start_p2p_device = ieee80211_start_p2p_device, 3809 .stop_p2p_device = ieee80211_stop_p2p_device, 3810 .add_key = ieee80211_add_key, 3811 .del_key = ieee80211_del_key, 3812 .get_key = ieee80211_get_key, 3813 .set_default_key = ieee80211_config_default_key, 3814 .set_default_mgmt_key = ieee80211_config_default_mgmt_key, 3815 .start_ap = ieee80211_start_ap, 3816 .change_beacon = ieee80211_change_beacon, 3817 .stop_ap = ieee80211_stop_ap, 3818 .add_station = ieee80211_add_station, 3819 .del_station = ieee80211_del_station, 3820 .change_station = ieee80211_change_station, 3821 .get_station = ieee80211_get_station, 3822 .dump_station = ieee80211_dump_station, 3823 .dump_survey = ieee80211_dump_survey, 3824 #ifdef CONFIG_MAC80211_MESH 3825 .add_mpath = ieee80211_add_mpath, 3826 .del_mpath = ieee80211_del_mpath, 3827 .change_mpath = ieee80211_change_mpath, 3828 .get_mpath = ieee80211_get_mpath, 3829 .dump_mpath = ieee80211_dump_mpath, 3830 .get_mpp = ieee80211_get_mpp, 3831 .dump_mpp = ieee80211_dump_mpp, 3832 .update_mesh_config = ieee80211_update_mesh_config, 3833 .get_mesh_config = ieee80211_get_mesh_config, 3834 .join_mesh = ieee80211_join_mesh, 3835 .leave_mesh = ieee80211_leave_mesh, 3836 #endif 3837 .join_ocb = ieee80211_join_ocb, 3838 .leave_ocb = ieee80211_leave_ocb, 3839 .change_bss = ieee80211_change_bss, 3840 .set_txq_params = ieee80211_set_txq_params, 3841 .set_monitor_channel = ieee80211_set_monitor_channel, 3842 .suspend = ieee80211_suspend, 3843 .resume = ieee80211_resume, 3844 .scan = ieee80211_scan, 3845 .sched_scan_start = ieee80211_sched_scan_start, 3846 .sched_scan_stop = ieee80211_sched_scan_stop, 3847 .auth = ieee80211_auth, 3848 .assoc = ieee80211_assoc, 3849 .deauth = ieee80211_deauth, 3850 .disassoc = ieee80211_disassoc, 3851 .join_ibss = ieee80211_join_ibss, 3852 .leave_ibss = ieee80211_leave_ibss, 3853 .set_mcast_rate = ieee80211_set_mcast_rate, 3854 .set_wiphy_params = ieee80211_set_wiphy_params, 3855 .set_tx_power = ieee80211_set_tx_power, 3856 .get_tx_power = ieee80211_get_tx_power, 3857 .set_wds_peer = ieee80211_set_wds_peer, 3858 .rfkill_poll = ieee80211_rfkill_poll, 3859 CFG80211_TESTMODE_CMD(ieee80211_testmode_cmd) 3860 CFG80211_TESTMODE_DUMP(ieee80211_testmode_dump) 3861 .set_power_mgmt = ieee80211_set_power_mgmt, 3862 .set_bitrate_mask = ieee80211_set_bitrate_mask, 3863 .remain_on_channel = ieee80211_remain_on_channel, 3864 .cancel_remain_on_channel = ieee80211_cancel_remain_on_channel, 3865 .mgmt_tx = ieee80211_mgmt_tx, 3866 .mgmt_tx_cancel_wait = ieee80211_mgmt_tx_cancel_wait, 3867 .set_cqm_rssi_config = ieee80211_set_cqm_rssi_config, 3868 .mgmt_frame_register = ieee80211_mgmt_frame_register, 3869 .set_antenna = ieee80211_set_antenna, 3870 .get_antenna = ieee80211_get_antenna, 3871 .set_rekey_data = ieee80211_set_rekey_data, 3872 .tdls_oper = ieee80211_tdls_oper, 3873 .tdls_mgmt = ieee80211_tdls_mgmt, 3874 .tdls_channel_switch = ieee80211_tdls_channel_switch, 3875 .tdls_cancel_channel_switch = ieee80211_tdls_cancel_channel_switch, 3876 .probe_client = ieee80211_probe_client, 3877 .set_noack_map = ieee80211_set_noack_map, 3878 #ifdef CONFIG_PM 3879 .set_wakeup = ieee80211_set_wakeup, 3880 #endif 3881 .get_channel = ieee80211_cfg_get_channel, 3882 .start_radar_detection = ieee80211_start_radar_detection, 3883 .channel_switch = ieee80211_channel_switch, 3884 .set_qos_map = ieee80211_set_qos_map, 3885 .set_ap_chanwidth = ieee80211_set_ap_chanwidth, 3886 .add_tx_ts = ieee80211_add_tx_ts, 3887 .del_tx_ts = ieee80211_del_tx_ts, 3888 }; 3889