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 ieee80211_check_fast_rx_iface(sdata); 71 } else if (type == NL80211_IFTYPE_STATION && 72 params && params->use_4addr >= 0) { 73 sdata->u.mgd.use_4addr = params->use_4addr; 74 } 75 76 if (sdata->vif.type == NL80211_IFTYPE_MONITOR && flags) { 77 struct ieee80211_local *local = sdata->local; 78 79 if (ieee80211_sdata_running(sdata)) { 80 u32 mask = MONITOR_FLAG_COOK_FRAMES | 81 MONITOR_FLAG_ACTIVE; 82 83 /* 84 * Prohibit MONITOR_FLAG_COOK_FRAMES and 85 * MONITOR_FLAG_ACTIVE to be changed while the 86 * interface is up. 87 * Else we would need to add a lot of cruft 88 * to update everything: 89 * cooked_mntrs, monitor and all fif_* counters 90 * reconfigure hardware 91 */ 92 if ((*flags & mask) != (sdata->u.mntr_flags & mask)) 93 return -EBUSY; 94 95 ieee80211_adjust_monitor_flags(sdata, -1); 96 sdata->u.mntr_flags = *flags; 97 ieee80211_adjust_monitor_flags(sdata, 1); 98 99 ieee80211_configure_filter(local); 100 } else { 101 /* 102 * Because the interface is down, ieee80211_do_stop 103 * and ieee80211_do_open take care of "everything" 104 * mentioned in the comment above. 105 */ 106 sdata->u.mntr_flags = *flags; 107 } 108 } 109 110 return 0; 111 } 112 113 static int ieee80211_start_p2p_device(struct wiphy *wiphy, 114 struct wireless_dev *wdev) 115 { 116 struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev); 117 int ret; 118 119 mutex_lock(&sdata->local->chanctx_mtx); 120 ret = ieee80211_check_combinations(sdata, NULL, 0, 0); 121 mutex_unlock(&sdata->local->chanctx_mtx); 122 if (ret < 0) 123 return ret; 124 125 return ieee80211_do_open(wdev, true); 126 } 127 128 static void ieee80211_stop_p2p_device(struct wiphy *wiphy, 129 struct wireless_dev *wdev) 130 { 131 ieee80211_sdata_stop(IEEE80211_WDEV_TO_SUB_IF(wdev)); 132 } 133 134 static int ieee80211_set_noack_map(struct wiphy *wiphy, 135 struct net_device *dev, 136 u16 noack_map) 137 { 138 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 139 140 sdata->noack_map = noack_map; 141 142 ieee80211_check_fast_xmit_iface(sdata); 143 144 return 0; 145 } 146 147 static int ieee80211_add_key(struct wiphy *wiphy, struct net_device *dev, 148 u8 key_idx, bool pairwise, const u8 *mac_addr, 149 struct key_params *params) 150 { 151 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 152 struct ieee80211_local *local = sdata->local; 153 struct sta_info *sta = NULL; 154 const struct ieee80211_cipher_scheme *cs = NULL; 155 struct ieee80211_key *key; 156 int err; 157 158 if (!ieee80211_sdata_running(sdata)) 159 return -ENETDOWN; 160 161 /* reject WEP and TKIP keys if WEP failed to initialize */ 162 switch (params->cipher) { 163 case WLAN_CIPHER_SUITE_WEP40: 164 case WLAN_CIPHER_SUITE_TKIP: 165 case WLAN_CIPHER_SUITE_WEP104: 166 if (IS_ERR(local->wep_tx_tfm)) 167 return -EINVAL; 168 break; 169 case WLAN_CIPHER_SUITE_CCMP: 170 case WLAN_CIPHER_SUITE_CCMP_256: 171 case WLAN_CIPHER_SUITE_AES_CMAC: 172 case WLAN_CIPHER_SUITE_BIP_CMAC_256: 173 case WLAN_CIPHER_SUITE_BIP_GMAC_128: 174 case WLAN_CIPHER_SUITE_BIP_GMAC_256: 175 case WLAN_CIPHER_SUITE_GCMP: 176 case WLAN_CIPHER_SUITE_GCMP_256: 177 break; 178 default: 179 cs = ieee80211_cs_get(local, params->cipher, sdata->vif.type); 180 break; 181 } 182 183 key = ieee80211_key_alloc(params->cipher, key_idx, params->key_len, 184 params->key, params->seq_len, params->seq, 185 cs); 186 if (IS_ERR(key)) 187 return PTR_ERR(key); 188 189 if (pairwise) 190 key->conf.flags |= IEEE80211_KEY_FLAG_PAIRWISE; 191 192 mutex_lock(&local->sta_mtx); 193 194 if (mac_addr) { 195 if (ieee80211_vif_is_mesh(&sdata->vif)) 196 sta = sta_info_get(sdata, mac_addr); 197 else 198 sta = sta_info_get_bss(sdata, mac_addr); 199 /* 200 * The ASSOC test makes sure the driver is ready to 201 * receive the key. When wpa_supplicant has roamed 202 * using FT, it attempts to set the key before 203 * association has completed, this rejects that attempt 204 * so it will set the key again after association. 205 * 206 * TODO: accept the key if we have a station entry and 207 * add it to the device after the station. 208 */ 209 if (!sta || !test_sta_flag(sta, WLAN_STA_ASSOC)) { 210 ieee80211_key_free_unused(key); 211 err = -ENOENT; 212 goto out_unlock; 213 } 214 } 215 216 switch (sdata->vif.type) { 217 case NL80211_IFTYPE_STATION: 218 if (sdata->u.mgd.mfp != IEEE80211_MFP_DISABLED) 219 key->conf.flags |= IEEE80211_KEY_FLAG_RX_MGMT; 220 break; 221 case NL80211_IFTYPE_AP: 222 case NL80211_IFTYPE_AP_VLAN: 223 /* Keys without a station are used for TX only */ 224 if (key->sta && test_sta_flag(key->sta, WLAN_STA_MFP)) 225 key->conf.flags |= IEEE80211_KEY_FLAG_RX_MGMT; 226 break; 227 case NL80211_IFTYPE_ADHOC: 228 /* no MFP (yet) */ 229 break; 230 case NL80211_IFTYPE_MESH_POINT: 231 #ifdef CONFIG_MAC80211_MESH 232 if (sdata->u.mesh.security != IEEE80211_MESH_SEC_NONE) 233 key->conf.flags |= IEEE80211_KEY_FLAG_RX_MGMT; 234 break; 235 #endif 236 case NL80211_IFTYPE_WDS: 237 case NL80211_IFTYPE_MONITOR: 238 case NL80211_IFTYPE_P2P_DEVICE: 239 case NL80211_IFTYPE_UNSPECIFIED: 240 case NUM_NL80211_IFTYPES: 241 case NL80211_IFTYPE_P2P_CLIENT: 242 case NL80211_IFTYPE_P2P_GO: 243 case NL80211_IFTYPE_OCB: 244 /* shouldn't happen */ 245 WARN_ON_ONCE(1); 246 break; 247 } 248 249 if (sta) 250 sta->cipher_scheme = cs; 251 252 err = ieee80211_key_link(key, sdata, sta); 253 254 out_unlock: 255 mutex_unlock(&local->sta_mtx); 256 257 return err; 258 } 259 260 static int ieee80211_del_key(struct wiphy *wiphy, struct net_device *dev, 261 u8 key_idx, bool pairwise, const u8 *mac_addr) 262 { 263 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 264 struct ieee80211_local *local = sdata->local; 265 struct sta_info *sta; 266 struct ieee80211_key *key = NULL; 267 int ret; 268 269 mutex_lock(&local->sta_mtx); 270 mutex_lock(&local->key_mtx); 271 272 if (mac_addr) { 273 ret = -ENOENT; 274 275 sta = sta_info_get_bss(sdata, mac_addr); 276 if (!sta) 277 goto out_unlock; 278 279 if (pairwise) 280 key = key_mtx_dereference(local, sta->ptk[key_idx]); 281 else 282 key = key_mtx_dereference(local, sta->gtk[key_idx]); 283 } else 284 key = key_mtx_dereference(local, sdata->keys[key_idx]); 285 286 if (!key) { 287 ret = -ENOENT; 288 goto out_unlock; 289 } 290 291 ieee80211_key_free(key, true); 292 293 ret = 0; 294 out_unlock: 295 mutex_unlock(&local->key_mtx); 296 mutex_unlock(&local->sta_mtx); 297 298 return ret; 299 } 300 301 static int ieee80211_get_key(struct wiphy *wiphy, struct net_device *dev, 302 u8 key_idx, bool pairwise, const u8 *mac_addr, 303 void *cookie, 304 void (*callback)(void *cookie, 305 struct key_params *params)) 306 { 307 struct ieee80211_sub_if_data *sdata; 308 struct sta_info *sta = NULL; 309 u8 seq[6] = {0}; 310 struct key_params params; 311 struct ieee80211_key *key = NULL; 312 u64 pn64; 313 u32 iv32; 314 u16 iv16; 315 int err = -ENOENT; 316 struct ieee80211_key_seq kseq = {}; 317 318 sdata = IEEE80211_DEV_TO_SUB_IF(dev); 319 320 rcu_read_lock(); 321 322 if (mac_addr) { 323 sta = sta_info_get_bss(sdata, mac_addr); 324 if (!sta) 325 goto out; 326 327 if (pairwise && key_idx < NUM_DEFAULT_KEYS) 328 key = rcu_dereference(sta->ptk[key_idx]); 329 else if (!pairwise && 330 key_idx < NUM_DEFAULT_KEYS + NUM_DEFAULT_MGMT_KEYS) 331 key = rcu_dereference(sta->gtk[key_idx]); 332 } else 333 key = rcu_dereference(sdata->keys[key_idx]); 334 335 if (!key) 336 goto out; 337 338 memset(¶ms, 0, sizeof(params)); 339 340 params.cipher = key->conf.cipher; 341 342 switch (key->conf.cipher) { 343 case WLAN_CIPHER_SUITE_TKIP: 344 pn64 = atomic64_read(&key->conf.tx_pn); 345 iv32 = TKIP_PN_TO_IV32(pn64); 346 iv16 = TKIP_PN_TO_IV16(pn64); 347 348 if (key->flags & KEY_FLAG_UPLOADED_TO_HARDWARE && 349 !(key->conf.flags & IEEE80211_KEY_FLAG_GENERATE_IV)) { 350 drv_get_key_seq(sdata->local, key, &kseq); 351 iv32 = kseq.tkip.iv32; 352 iv16 = kseq.tkip.iv16; 353 } 354 355 seq[0] = iv16 & 0xff; 356 seq[1] = (iv16 >> 8) & 0xff; 357 seq[2] = iv32 & 0xff; 358 seq[3] = (iv32 >> 8) & 0xff; 359 seq[4] = (iv32 >> 16) & 0xff; 360 seq[5] = (iv32 >> 24) & 0xff; 361 params.seq = seq; 362 params.seq_len = 6; 363 break; 364 case WLAN_CIPHER_SUITE_CCMP: 365 case WLAN_CIPHER_SUITE_CCMP_256: 366 case WLAN_CIPHER_SUITE_AES_CMAC: 367 case WLAN_CIPHER_SUITE_BIP_CMAC_256: 368 BUILD_BUG_ON(offsetof(typeof(kseq), ccmp) != 369 offsetof(typeof(kseq), aes_cmac)); 370 case WLAN_CIPHER_SUITE_BIP_GMAC_128: 371 case WLAN_CIPHER_SUITE_BIP_GMAC_256: 372 BUILD_BUG_ON(offsetof(typeof(kseq), ccmp) != 373 offsetof(typeof(kseq), aes_gmac)); 374 case WLAN_CIPHER_SUITE_GCMP: 375 case WLAN_CIPHER_SUITE_GCMP_256: 376 BUILD_BUG_ON(offsetof(typeof(kseq), ccmp) != 377 offsetof(typeof(kseq), gcmp)); 378 379 if (key->flags & KEY_FLAG_UPLOADED_TO_HARDWARE && 380 !(key->conf.flags & IEEE80211_KEY_FLAG_GENERATE_IV)) { 381 drv_get_key_seq(sdata->local, key, &kseq); 382 memcpy(seq, kseq.ccmp.pn, 6); 383 } else { 384 pn64 = atomic64_read(&key->conf.tx_pn); 385 seq[0] = pn64; 386 seq[1] = pn64 >> 8; 387 seq[2] = pn64 >> 16; 388 seq[3] = pn64 >> 24; 389 seq[4] = pn64 >> 32; 390 seq[5] = pn64 >> 40; 391 } 392 params.seq = seq; 393 params.seq_len = 6; 394 break; 395 default: 396 if (!(key->flags & KEY_FLAG_UPLOADED_TO_HARDWARE)) 397 break; 398 if (WARN_ON(key->conf.flags & IEEE80211_KEY_FLAG_GENERATE_IV)) 399 break; 400 drv_get_key_seq(sdata->local, key, &kseq); 401 params.seq = kseq.hw.seq; 402 params.seq_len = kseq.hw.seq_len; 403 break; 404 } 405 406 params.key = key->conf.key; 407 params.key_len = key->conf.keylen; 408 409 callback(cookie, ¶ms); 410 err = 0; 411 412 out: 413 rcu_read_unlock(); 414 return err; 415 } 416 417 static int ieee80211_config_default_key(struct wiphy *wiphy, 418 struct net_device *dev, 419 u8 key_idx, bool uni, 420 bool multi) 421 { 422 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 423 424 ieee80211_set_default_key(sdata, key_idx, uni, multi); 425 426 return 0; 427 } 428 429 static int ieee80211_config_default_mgmt_key(struct wiphy *wiphy, 430 struct net_device *dev, 431 u8 key_idx) 432 { 433 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 434 435 ieee80211_set_default_mgmt_key(sdata, key_idx); 436 437 return 0; 438 } 439 440 void sta_set_rate_info_tx(struct sta_info *sta, 441 const struct ieee80211_tx_rate *rate, 442 struct rate_info *rinfo) 443 { 444 rinfo->flags = 0; 445 if (rate->flags & IEEE80211_TX_RC_MCS) { 446 rinfo->flags |= RATE_INFO_FLAGS_MCS; 447 rinfo->mcs = rate->idx; 448 } else if (rate->flags & IEEE80211_TX_RC_VHT_MCS) { 449 rinfo->flags |= RATE_INFO_FLAGS_VHT_MCS; 450 rinfo->mcs = ieee80211_rate_get_vht_mcs(rate); 451 rinfo->nss = ieee80211_rate_get_vht_nss(rate); 452 } else { 453 struct ieee80211_supported_band *sband; 454 int shift = ieee80211_vif_get_shift(&sta->sdata->vif); 455 u16 brate; 456 457 sband = sta->local->hw.wiphy->bands[ 458 ieee80211_get_sdata_band(sta->sdata)]; 459 brate = sband->bitrates[rate->idx].bitrate; 460 rinfo->legacy = DIV_ROUND_UP(brate, 1 << shift); 461 } 462 if (rate->flags & IEEE80211_TX_RC_40_MHZ_WIDTH) 463 rinfo->bw = RATE_INFO_BW_40; 464 else if (rate->flags & IEEE80211_TX_RC_80_MHZ_WIDTH) 465 rinfo->bw = RATE_INFO_BW_80; 466 else if (rate->flags & IEEE80211_TX_RC_160_MHZ_WIDTH) 467 rinfo->bw = RATE_INFO_BW_160; 468 else 469 rinfo->bw = RATE_INFO_BW_20; 470 if (rate->flags & IEEE80211_TX_RC_SHORT_GI) 471 rinfo->flags |= RATE_INFO_FLAGS_SHORT_GI; 472 } 473 474 static int ieee80211_dump_station(struct wiphy *wiphy, struct net_device *dev, 475 int idx, u8 *mac, struct station_info *sinfo) 476 { 477 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 478 struct ieee80211_local *local = sdata->local; 479 struct sta_info *sta; 480 int ret = -ENOENT; 481 482 mutex_lock(&local->sta_mtx); 483 484 sta = sta_info_get_by_idx(sdata, idx); 485 if (sta) { 486 ret = 0; 487 memcpy(mac, sta->sta.addr, ETH_ALEN); 488 sta_set_sinfo(sta, sinfo); 489 } 490 491 mutex_unlock(&local->sta_mtx); 492 493 return ret; 494 } 495 496 static int ieee80211_dump_survey(struct wiphy *wiphy, struct net_device *dev, 497 int idx, struct survey_info *survey) 498 { 499 struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr); 500 501 return drv_get_survey(local, idx, survey); 502 } 503 504 static int ieee80211_get_station(struct wiphy *wiphy, struct net_device *dev, 505 const u8 *mac, struct station_info *sinfo) 506 { 507 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 508 struct ieee80211_local *local = sdata->local; 509 struct sta_info *sta; 510 int ret = -ENOENT; 511 512 mutex_lock(&local->sta_mtx); 513 514 sta = sta_info_get_bss(sdata, mac); 515 if (sta) { 516 ret = 0; 517 sta_set_sinfo(sta, sinfo); 518 } 519 520 mutex_unlock(&local->sta_mtx); 521 522 return ret; 523 } 524 525 static int ieee80211_set_monitor_channel(struct wiphy *wiphy, 526 struct cfg80211_chan_def *chandef) 527 { 528 struct ieee80211_local *local = wiphy_priv(wiphy); 529 struct ieee80211_sub_if_data *sdata; 530 int ret = 0; 531 532 if (cfg80211_chandef_identical(&local->monitor_chandef, chandef)) 533 return 0; 534 535 mutex_lock(&local->mtx); 536 mutex_lock(&local->iflist_mtx); 537 if (local->use_chanctx) { 538 sdata = rcu_dereference_protected( 539 local->monitor_sdata, 540 lockdep_is_held(&local->iflist_mtx)); 541 if (sdata) { 542 ieee80211_vif_release_channel(sdata); 543 ret = ieee80211_vif_use_channel(sdata, chandef, 544 IEEE80211_CHANCTX_EXCLUSIVE); 545 } 546 } else if (local->open_count == local->monitors) { 547 local->_oper_chandef = *chandef; 548 ieee80211_hw_config(local, 0); 549 } 550 551 if (ret == 0) 552 local->monitor_chandef = *chandef; 553 mutex_unlock(&local->iflist_mtx); 554 mutex_unlock(&local->mtx); 555 556 return ret; 557 } 558 559 static int ieee80211_set_probe_resp(struct ieee80211_sub_if_data *sdata, 560 const u8 *resp, size_t resp_len, 561 const struct ieee80211_csa_settings *csa) 562 { 563 struct probe_resp *new, *old; 564 565 if (!resp || !resp_len) 566 return 1; 567 568 old = sdata_dereference(sdata->u.ap.probe_resp, sdata); 569 570 new = kzalloc(sizeof(struct probe_resp) + resp_len, GFP_KERNEL); 571 if (!new) 572 return -ENOMEM; 573 574 new->len = resp_len; 575 memcpy(new->data, resp, resp_len); 576 577 if (csa) 578 memcpy(new->csa_counter_offsets, csa->counter_offsets_presp, 579 csa->n_counter_offsets_presp * 580 sizeof(new->csa_counter_offsets[0])); 581 582 rcu_assign_pointer(sdata->u.ap.probe_resp, new); 583 if (old) 584 kfree_rcu(old, rcu_head); 585 586 return 0; 587 } 588 589 static int ieee80211_assign_beacon(struct ieee80211_sub_if_data *sdata, 590 struct cfg80211_beacon_data *params, 591 const struct ieee80211_csa_settings *csa) 592 { 593 struct beacon_data *new, *old; 594 int new_head_len, new_tail_len; 595 int size, err; 596 u32 changed = BSS_CHANGED_BEACON; 597 598 old = sdata_dereference(sdata->u.ap.beacon, sdata); 599 600 601 /* Need to have a beacon head if we don't have one yet */ 602 if (!params->head && !old) 603 return -EINVAL; 604 605 /* new or old head? */ 606 if (params->head) 607 new_head_len = params->head_len; 608 else 609 new_head_len = old->head_len; 610 611 /* new or old tail? */ 612 if (params->tail || !old) 613 /* params->tail_len will be zero for !params->tail */ 614 new_tail_len = params->tail_len; 615 else 616 new_tail_len = old->tail_len; 617 618 size = sizeof(*new) + new_head_len + new_tail_len; 619 620 new = kzalloc(size, GFP_KERNEL); 621 if (!new) 622 return -ENOMEM; 623 624 /* start filling the new info now */ 625 626 /* 627 * pointers go into the block we allocated, 628 * memory is | beacon_data | head | tail | 629 */ 630 new->head = ((u8 *) new) + sizeof(*new); 631 new->tail = new->head + new_head_len; 632 new->head_len = new_head_len; 633 new->tail_len = new_tail_len; 634 635 if (csa) { 636 new->csa_current_counter = csa->count; 637 memcpy(new->csa_counter_offsets, csa->counter_offsets_beacon, 638 csa->n_counter_offsets_beacon * 639 sizeof(new->csa_counter_offsets[0])); 640 } 641 642 /* copy in head */ 643 if (params->head) 644 memcpy(new->head, params->head, new_head_len); 645 else 646 memcpy(new->head, old->head, new_head_len); 647 648 /* copy in optional tail */ 649 if (params->tail) 650 memcpy(new->tail, params->tail, new_tail_len); 651 else 652 if (old) 653 memcpy(new->tail, old->tail, new_tail_len); 654 655 err = ieee80211_set_probe_resp(sdata, params->probe_resp, 656 params->probe_resp_len, csa); 657 if (err < 0) 658 return err; 659 if (err == 0) 660 changed |= BSS_CHANGED_AP_PROBE_RESP; 661 662 rcu_assign_pointer(sdata->u.ap.beacon, new); 663 664 if (old) 665 kfree_rcu(old, rcu_head); 666 667 return changed; 668 } 669 670 static int ieee80211_start_ap(struct wiphy *wiphy, struct net_device *dev, 671 struct cfg80211_ap_settings *params) 672 { 673 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 674 struct ieee80211_local *local = sdata->local; 675 struct beacon_data *old; 676 struct ieee80211_sub_if_data *vlan; 677 u32 changed = BSS_CHANGED_BEACON_INT | 678 BSS_CHANGED_BEACON_ENABLED | 679 BSS_CHANGED_BEACON | 680 BSS_CHANGED_SSID | 681 BSS_CHANGED_P2P_PS | 682 BSS_CHANGED_TXPOWER; 683 int err; 684 685 old = sdata_dereference(sdata->u.ap.beacon, sdata); 686 if (old) 687 return -EALREADY; 688 689 switch (params->smps_mode) { 690 case NL80211_SMPS_OFF: 691 sdata->smps_mode = IEEE80211_SMPS_OFF; 692 break; 693 case NL80211_SMPS_STATIC: 694 sdata->smps_mode = IEEE80211_SMPS_STATIC; 695 break; 696 case NL80211_SMPS_DYNAMIC: 697 sdata->smps_mode = IEEE80211_SMPS_DYNAMIC; 698 break; 699 default: 700 return -EINVAL; 701 } 702 sdata->needed_rx_chains = sdata->local->rx_chains; 703 704 mutex_lock(&local->mtx); 705 err = ieee80211_vif_use_channel(sdata, ¶ms->chandef, 706 IEEE80211_CHANCTX_SHARED); 707 if (!err) 708 ieee80211_vif_copy_chanctx_to_vlans(sdata, false); 709 mutex_unlock(&local->mtx); 710 if (err) 711 return err; 712 713 /* 714 * Apply control port protocol, this allows us to 715 * not encrypt dynamic WEP control frames. 716 */ 717 sdata->control_port_protocol = params->crypto.control_port_ethertype; 718 sdata->control_port_no_encrypt = params->crypto.control_port_no_encrypt; 719 sdata->encrypt_headroom = ieee80211_cs_headroom(sdata->local, 720 ¶ms->crypto, 721 sdata->vif.type); 722 723 list_for_each_entry(vlan, &sdata->u.ap.vlans, u.vlan.list) { 724 vlan->control_port_protocol = 725 params->crypto.control_port_ethertype; 726 vlan->control_port_no_encrypt = 727 params->crypto.control_port_no_encrypt; 728 vlan->encrypt_headroom = 729 ieee80211_cs_headroom(sdata->local, 730 ¶ms->crypto, 731 vlan->vif.type); 732 } 733 734 sdata->vif.bss_conf.beacon_int = params->beacon_interval; 735 sdata->vif.bss_conf.dtim_period = params->dtim_period; 736 sdata->vif.bss_conf.enable_beacon = true; 737 sdata->vif.bss_conf.allow_p2p_go_ps = sdata->vif.p2p; 738 739 sdata->vif.bss_conf.ssid_len = params->ssid_len; 740 if (params->ssid_len) 741 memcpy(sdata->vif.bss_conf.ssid, params->ssid, 742 params->ssid_len); 743 sdata->vif.bss_conf.hidden_ssid = 744 (params->hidden_ssid != NL80211_HIDDEN_SSID_NOT_IN_USE); 745 746 memset(&sdata->vif.bss_conf.p2p_noa_attr, 0, 747 sizeof(sdata->vif.bss_conf.p2p_noa_attr)); 748 sdata->vif.bss_conf.p2p_noa_attr.oppps_ctwindow = 749 params->p2p_ctwindow & IEEE80211_P2P_OPPPS_CTWINDOW_MASK; 750 if (params->p2p_opp_ps) 751 sdata->vif.bss_conf.p2p_noa_attr.oppps_ctwindow |= 752 IEEE80211_P2P_OPPPS_ENABLE_BIT; 753 754 err = ieee80211_assign_beacon(sdata, ¶ms->beacon, NULL); 755 if (err < 0) { 756 ieee80211_vif_release_channel(sdata); 757 return err; 758 } 759 changed |= err; 760 761 err = drv_start_ap(sdata->local, sdata); 762 if (err) { 763 old = sdata_dereference(sdata->u.ap.beacon, sdata); 764 765 if (old) 766 kfree_rcu(old, rcu_head); 767 RCU_INIT_POINTER(sdata->u.ap.beacon, NULL); 768 ieee80211_vif_release_channel(sdata); 769 return err; 770 } 771 772 ieee80211_recalc_dtim(local, sdata); 773 ieee80211_bss_info_change_notify(sdata, changed); 774 775 netif_carrier_on(dev); 776 list_for_each_entry(vlan, &sdata->u.ap.vlans, u.vlan.list) 777 netif_carrier_on(vlan->dev); 778 779 return 0; 780 } 781 782 static int ieee80211_change_beacon(struct wiphy *wiphy, struct net_device *dev, 783 struct cfg80211_beacon_data *params) 784 { 785 struct ieee80211_sub_if_data *sdata; 786 struct beacon_data *old; 787 int err; 788 789 sdata = IEEE80211_DEV_TO_SUB_IF(dev); 790 sdata_assert_lock(sdata); 791 792 /* don't allow changing the beacon while CSA is in place - offset 793 * of channel switch counter may change 794 */ 795 if (sdata->vif.csa_active) 796 return -EBUSY; 797 798 old = sdata_dereference(sdata->u.ap.beacon, sdata); 799 if (!old) 800 return -ENOENT; 801 802 err = ieee80211_assign_beacon(sdata, params, NULL); 803 if (err < 0) 804 return err; 805 ieee80211_bss_info_change_notify(sdata, err); 806 return 0; 807 } 808 809 static int ieee80211_stop_ap(struct wiphy *wiphy, struct net_device *dev) 810 { 811 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 812 struct ieee80211_sub_if_data *vlan; 813 struct ieee80211_local *local = sdata->local; 814 struct beacon_data *old_beacon; 815 struct probe_resp *old_probe_resp; 816 struct cfg80211_chan_def chandef; 817 818 sdata_assert_lock(sdata); 819 820 old_beacon = sdata_dereference(sdata->u.ap.beacon, sdata); 821 if (!old_beacon) 822 return -ENOENT; 823 old_probe_resp = sdata_dereference(sdata->u.ap.probe_resp, sdata); 824 825 /* abort any running channel switch */ 826 mutex_lock(&local->mtx); 827 sdata->vif.csa_active = false; 828 if (sdata->csa_block_tx) { 829 ieee80211_wake_vif_queues(local, sdata, 830 IEEE80211_QUEUE_STOP_REASON_CSA); 831 sdata->csa_block_tx = false; 832 } 833 834 mutex_unlock(&local->mtx); 835 836 kfree(sdata->u.ap.next_beacon); 837 sdata->u.ap.next_beacon = NULL; 838 839 /* turn off carrier for this interface and dependent VLANs */ 840 list_for_each_entry(vlan, &sdata->u.ap.vlans, u.vlan.list) 841 netif_carrier_off(vlan->dev); 842 netif_carrier_off(dev); 843 844 /* remove beacon and probe response */ 845 RCU_INIT_POINTER(sdata->u.ap.beacon, NULL); 846 RCU_INIT_POINTER(sdata->u.ap.probe_resp, NULL); 847 kfree_rcu(old_beacon, rcu_head); 848 if (old_probe_resp) 849 kfree_rcu(old_probe_resp, rcu_head); 850 sdata->u.ap.driver_smps_mode = IEEE80211_SMPS_OFF; 851 852 __sta_info_flush(sdata, true); 853 ieee80211_free_keys(sdata, true); 854 855 sdata->vif.bss_conf.enable_beacon = false; 856 sdata->vif.bss_conf.ssid_len = 0; 857 clear_bit(SDATA_STATE_OFFCHANNEL_BEACON_STOPPED, &sdata->state); 858 ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_BEACON_ENABLED); 859 860 if (sdata->wdev.cac_started) { 861 chandef = sdata->vif.bss_conf.chandef; 862 cancel_delayed_work_sync(&sdata->dfs_cac_timer_work); 863 cfg80211_cac_event(sdata->dev, &chandef, 864 NL80211_RADAR_CAC_ABORTED, 865 GFP_KERNEL); 866 } 867 868 drv_stop_ap(sdata->local, sdata); 869 870 /* free all potentially still buffered bcast frames */ 871 local->total_ps_buffered -= skb_queue_len(&sdata->u.ap.ps.bc_buf); 872 skb_queue_purge(&sdata->u.ap.ps.bc_buf); 873 874 mutex_lock(&local->mtx); 875 ieee80211_vif_copy_chanctx_to_vlans(sdata, true); 876 ieee80211_vif_release_channel(sdata); 877 mutex_unlock(&local->mtx); 878 879 return 0; 880 } 881 882 /* Layer 2 Update frame (802.2 Type 1 LLC XID Update response) */ 883 struct iapp_layer2_update { 884 u8 da[ETH_ALEN]; /* broadcast */ 885 u8 sa[ETH_ALEN]; /* STA addr */ 886 __be16 len; /* 6 */ 887 u8 dsap; /* 0 */ 888 u8 ssap; /* 0 */ 889 u8 control; 890 u8 xid_info[3]; 891 } __packed; 892 893 static void ieee80211_send_layer2_update(struct sta_info *sta) 894 { 895 struct iapp_layer2_update *msg; 896 struct sk_buff *skb; 897 898 /* Send Level 2 Update Frame to update forwarding tables in layer 2 899 * bridge devices */ 900 901 skb = dev_alloc_skb(sizeof(*msg)); 902 if (!skb) 903 return; 904 msg = (struct iapp_layer2_update *)skb_put(skb, sizeof(*msg)); 905 906 /* 802.2 Type 1 Logical Link Control (LLC) Exchange Identifier (XID) 907 * Update response frame; IEEE Std 802.2-1998, 5.4.1.2.1 */ 908 909 eth_broadcast_addr(msg->da); 910 memcpy(msg->sa, sta->sta.addr, ETH_ALEN); 911 msg->len = htons(6); 912 msg->dsap = 0; 913 msg->ssap = 0x01; /* NULL LSAP, CR Bit: Response */ 914 msg->control = 0xaf; /* XID response lsb.1111F101. 915 * F=0 (no poll command; unsolicited frame) */ 916 msg->xid_info[0] = 0x81; /* XID format identifier */ 917 msg->xid_info[1] = 1; /* LLC types/classes: Type 1 LLC */ 918 msg->xid_info[2] = 0; /* XID sender's receive window size (RW) */ 919 920 skb->dev = sta->sdata->dev; 921 skb->protocol = eth_type_trans(skb, sta->sdata->dev); 922 memset(skb->cb, 0, sizeof(skb->cb)); 923 netif_rx_ni(skb); 924 } 925 926 static int sta_apply_auth_flags(struct ieee80211_local *local, 927 struct sta_info *sta, 928 u32 mask, u32 set) 929 { 930 int ret; 931 932 if (mask & BIT(NL80211_STA_FLAG_AUTHENTICATED) && 933 set & BIT(NL80211_STA_FLAG_AUTHENTICATED) && 934 !test_sta_flag(sta, WLAN_STA_AUTH)) { 935 ret = sta_info_move_state(sta, IEEE80211_STA_AUTH); 936 if (ret) 937 return ret; 938 } 939 940 if (mask & BIT(NL80211_STA_FLAG_ASSOCIATED) && 941 set & BIT(NL80211_STA_FLAG_ASSOCIATED) && 942 !test_sta_flag(sta, WLAN_STA_ASSOC)) { 943 /* 944 * When peer becomes associated, init rate control as 945 * well. Some drivers require rate control initialized 946 * before drv_sta_state() is called. 947 */ 948 if (!test_sta_flag(sta, WLAN_STA_RATE_CONTROL)) 949 rate_control_rate_init(sta); 950 951 ret = sta_info_move_state(sta, IEEE80211_STA_ASSOC); 952 if (ret) 953 return ret; 954 } 955 956 if (mask & BIT(NL80211_STA_FLAG_AUTHORIZED)) { 957 if (set & BIT(NL80211_STA_FLAG_AUTHORIZED)) 958 ret = sta_info_move_state(sta, IEEE80211_STA_AUTHORIZED); 959 else if (test_sta_flag(sta, WLAN_STA_AUTHORIZED)) 960 ret = sta_info_move_state(sta, IEEE80211_STA_ASSOC); 961 else 962 ret = 0; 963 if (ret) 964 return ret; 965 } 966 967 if (mask & BIT(NL80211_STA_FLAG_ASSOCIATED) && 968 !(set & BIT(NL80211_STA_FLAG_ASSOCIATED)) && 969 test_sta_flag(sta, WLAN_STA_ASSOC)) { 970 ret = sta_info_move_state(sta, IEEE80211_STA_AUTH); 971 if (ret) 972 return ret; 973 } 974 975 if (mask & BIT(NL80211_STA_FLAG_AUTHENTICATED) && 976 !(set & BIT(NL80211_STA_FLAG_AUTHENTICATED)) && 977 test_sta_flag(sta, WLAN_STA_AUTH)) { 978 ret = sta_info_move_state(sta, IEEE80211_STA_NONE); 979 if (ret) 980 return ret; 981 } 982 983 return 0; 984 } 985 986 static void sta_apply_mesh_params(struct ieee80211_local *local, 987 struct sta_info *sta, 988 struct station_parameters *params) 989 { 990 #ifdef CONFIG_MAC80211_MESH 991 struct ieee80211_sub_if_data *sdata = sta->sdata; 992 u32 changed = 0; 993 994 if (params->sta_modify_mask & STATION_PARAM_APPLY_PLINK_STATE) { 995 switch (params->plink_state) { 996 case NL80211_PLINK_ESTAB: 997 if (sta->mesh->plink_state != NL80211_PLINK_ESTAB) 998 changed = mesh_plink_inc_estab_count(sdata); 999 sta->mesh->plink_state = params->plink_state; 1000 1001 ieee80211_mps_sta_status_update(sta); 1002 changed |= ieee80211_mps_set_sta_local_pm(sta, 1003 sdata->u.mesh.mshcfg.power_mode); 1004 break; 1005 case NL80211_PLINK_LISTEN: 1006 case NL80211_PLINK_BLOCKED: 1007 case NL80211_PLINK_OPN_SNT: 1008 case NL80211_PLINK_OPN_RCVD: 1009 case NL80211_PLINK_CNF_RCVD: 1010 case NL80211_PLINK_HOLDING: 1011 if (sta->mesh->plink_state == NL80211_PLINK_ESTAB) 1012 changed = mesh_plink_dec_estab_count(sdata); 1013 sta->mesh->plink_state = params->plink_state; 1014 1015 ieee80211_mps_sta_status_update(sta); 1016 changed |= ieee80211_mps_set_sta_local_pm(sta, 1017 NL80211_MESH_POWER_UNKNOWN); 1018 break; 1019 default: 1020 /* nothing */ 1021 break; 1022 } 1023 } 1024 1025 switch (params->plink_action) { 1026 case NL80211_PLINK_ACTION_NO_ACTION: 1027 /* nothing */ 1028 break; 1029 case NL80211_PLINK_ACTION_OPEN: 1030 changed |= mesh_plink_open(sta); 1031 break; 1032 case NL80211_PLINK_ACTION_BLOCK: 1033 changed |= mesh_plink_block(sta); 1034 break; 1035 } 1036 1037 if (params->local_pm) 1038 changed |= ieee80211_mps_set_sta_local_pm(sta, 1039 params->local_pm); 1040 1041 ieee80211_mbss_info_change_notify(sdata, changed); 1042 #endif 1043 } 1044 1045 static int sta_apply_parameters(struct ieee80211_local *local, 1046 struct sta_info *sta, 1047 struct station_parameters *params) 1048 { 1049 int ret = 0; 1050 struct ieee80211_supported_band *sband; 1051 struct ieee80211_sub_if_data *sdata = sta->sdata; 1052 enum nl80211_band band = ieee80211_get_sdata_band(sdata); 1053 u32 mask, set; 1054 1055 sband = local->hw.wiphy->bands[band]; 1056 1057 mask = params->sta_flags_mask; 1058 set = params->sta_flags_set; 1059 1060 if (ieee80211_vif_is_mesh(&sdata->vif)) { 1061 /* 1062 * In mesh mode, ASSOCIATED isn't part of the nl80211 1063 * API but must follow AUTHENTICATED for driver state. 1064 */ 1065 if (mask & BIT(NL80211_STA_FLAG_AUTHENTICATED)) 1066 mask |= BIT(NL80211_STA_FLAG_ASSOCIATED); 1067 if (set & BIT(NL80211_STA_FLAG_AUTHENTICATED)) 1068 set |= BIT(NL80211_STA_FLAG_ASSOCIATED); 1069 } else if (test_sta_flag(sta, WLAN_STA_TDLS_PEER)) { 1070 /* 1071 * TDLS -- everything follows authorized, but 1072 * only becoming authorized is possible, not 1073 * going back 1074 */ 1075 if (set & BIT(NL80211_STA_FLAG_AUTHORIZED)) { 1076 set |= BIT(NL80211_STA_FLAG_AUTHENTICATED) | 1077 BIT(NL80211_STA_FLAG_ASSOCIATED); 1078 mask |= BIT(NL80211_STA_FLAG_AUTHENTICATED) | 1079 BIT(NL80211_STA_FLAG_ASSOCIATED); 1080 } 1081 } 1082 1083 if (mask & BIT(NL80211_STA_FLAG_WME) && 1084 local->hw.queues >= IEEE80211_NUM_ACS) 1085 sta->sta.wme = set & BIT(NL80211_STA_FLAG_WME); 1086 1087 /* auth flags will be set later for TDLS, 1088 * and for unassociated stations that move to assocaited */ 1089 if (!test_sta_flag(sta, WLAN_STA_TDLS_PEER) && 1090 !((mask & BIT(NL80211_STA_FLAG_ASSOCIATED)) && 1091 (set & BIT(NL80211_STA_FLAG_ASSOCIATED)))) { 1092 ret = sta_apply_auth_flags(local, sta, mask, set); 1093 if (ret) 1094 return ret; 1095 } 1096 1097 if (mask & BIT(NL80211_STA_FLAG_SHORT_PREAMBLE)) { 1098 if (set & BIT(NL80211_STA_FLAG_SHORT_PREAMBLE)) 1099 set_sta_flag(sta, WLAN_STA_SHORT_PREAMBLE); 1100 else 1101 clear_sta_flag(sta, WLAN_STA_SHORT_PREAMBLE); 1102 } 1103 1104 if (mask & BIT(NL80211_STA_FLAG_MFP)) { 1105 sta->sta.mfp = !!(set & BIT(NL80211_STA_FLAG_MFP)); 1106 if (set & BIT(NL80211_STA_FLAG_MFP)) 1107 set_sta_flag(sta, WLAN_STA_MFP); 1108 else 1109 clear_sta_flag(sta, WLAN_STA_MFP); 1110 } 1111 1112 if (mask & BIT(NL80211_STA_FLAG_TDLS_PEER)) { 1113 if (set & BIT(NL80211_STA_FLAG_TDLS_PEER)) 1114 set_sta_flag(sta, WLAN_STA_TDLS_PEER); 1115 else 1116 clear_sta_flag(sta, WLAN_STA_TDLS_PEER); 1117 } 1118 1119 /* mark TDLS channel switch support, if the AP allows it */ 1120 if (test_sta_flag(sta, WLAN_STA_TDLS_PEER) && 1121 !sdata->u.mgd.tdls_chan_switch_prohibited && 1122 params->ext_capab_len >= 4 && 1123 params->ext_capab[3] & WLAN_EXT_CAPA4_TDLS_CHAN_SWITCH) 1124 set_sta_flag(sta, WLAN_STA_TDLS_CHAN_SWITCH); 1125 1126 if (test_sta_flag(sta, WLAN_STA_TDLS_PEER) && 1127 !sdata->u.mgd.tdls_wider_bw_prohibited && 1128 ieee80211_hw_check(&local->hw, TDLS_WIDER_BW) && 1129 params->ext_capab_len >= 8 && 1130 params->ext_capab[7] & WLAN_EXT_CAPA8_TDLS_WIDE_BW_ENABLED) 1131 set_sta_flag(sta, WLAN_STA_TDLS_WIDER_BW); 1132 1133 if (params->sta_modify_mask & STATION_PARAM_APPLY_UAPSD) { 1134 sta->sta.uapsd_queues = params->uapsd_queues; 1135 sta->sta.max_sp = params->max_sp; 1136 } 1137 1138 /* The sender might not have sent the last bit, consider it to be 0 */ 1139 if (params->ext_capab_len >= 8) { 1140 u8 val = (params->ext_capab[7] & 1141 WLAN_EXT_CAPA8_MAX_MSDU_IN_AMSDU_LSB) >> 7; 1142 1143 /* we did get all the bits, take the MSB as well */ 1144 if (params->ext_capab_len >= 9) { 1145 u8 val_msb = params->ext_capab[8] & 1146 WLAN_EXT_CAPA9_MAX_MSDU_IN_AMSDU_MSB; 1147 val_msb <<= 1; 1148 val |= val_msb; 1149 } 1150 1151 switch (val) { 1152 case 1: 1153 sta->sta.max_amsdu_subframes = 32; 1154 break; 1155 case 2: 1156 sta->sta.max_amsdu_subframes = 16; 1157 break; 1158 case 3: 1159 sta->sta.max_amsdu_subframes = 8; 1160 break; 1161 default: 1162 sta->sta.max_amsdu_subframes = 0; 1163 } 1164 } 1165 1166 /* 1167 * cfg80211 validates this (1-2007) and allows setting the AID 1168 * only when creating a new station entry 1169 */ 1170 if (params->aid) 1171 sta->sta.aid = params->aid; 1172 1173 /* 1174 * Some of the following updates would be racy if called on an 1175 * existing station, via ieee80211_change_station(). However, 1176 * all such changes are rejected by cfg80211 except for updates 1177 * changing the supported rates on an existing but not yet used 1178 * TDLS peer. 1179 */ 1180 1181 if (params->listen_interval >= 0) 1182 sta->listen_interval = params->listen_interval; 1183 1184 if (params->supported_rates) { 1185 ieee80211_parse_bitrates(&sdata->vif.bss_conf.chandef, 1186 sband, params->supported_rates, 1187 params->supported_rates_len, 1188 &sta->sta.supp_rates[band]); 1189 } 1190 1191 if (params->ht_capa) 1192 ieee80211_ht_cap_ie_to_sta_ht_cap(sdata, sband, 1193 params->ht_capa, sta); 1194 1195 /* VHT can override some HT caps such as the A-MSDU max length */ 1196 if (params->vht_capa) 1197 ieee80211_vht_cap_ie_to_sta_vht_cap(sdata, sband, 1198 params->vht_capa, sta); 1199 1200 if (params->opmode_notif_used) { 1201 /* returned value is only needed for rc update, but the 1202 * rc isn't initialized here yet, so ignore it 1203 */ 1204 __ieee80211_vht_handle_opmode(sdata, sta, 1205 params->opmode_notif, band); 1206 } 1207 1208 if (params->support_p2p_ps >= 0) 1209 sta->sta.support_p2p_ps = params->support_p2p_ps; 1210 1211 if (ieee80211_vif_is_mesh(&sdata->vif)) 1212 sta_apply_mesh_params(local, sta, params); 1213 1214 /* set the STA state after all sta info from usermode has been set */ 1215 if (test_sta_flag(sta, WLAN_STA_TDLS_PEER) || 1216 set & BIT(NL80211_STA_FLAG_ASSOCIATED)) { 1217 ret = sta_apply_auth_flags(local, sta, mask, set); 1218 if (ret) 1219 return ret; 1220 } 1221 1222 return 0; 1223 } 1224 1225 static int ieee80211_add_station(struct wiphy *wiphy, struct net_device *dev, 1226 const u8 *mac, 1227 struct station_parameters *params) 1228 { 1229 struct ieee80211_local *local = wiphy_priv(wiphy); 1230 struct sta_info *sta; 1231 struct ieee80211_sub_if_data *sdata; 1232 int err; 1233 int layer2_update; 1234 1235 if (params->vlan) { 1236 sdata = IEEE80211_DEV_TO_SUB_IF(params->vlan); 1237 1238 if (sdata->vif.type != NL80211_IFTYPE_AP_VLAN && 1239 sdata->vif.type != NL80211_IFTYPE_AP) 1240 return -EINVAL; 1241 } else 1242 sdata = IEEE80211_DEV_TO_SUB_IF(dev); 1243 1244 if (ether_addr_equal(mac, sdata->vif.addr)) 1245 return -EINVAL; 1246 1247 if (is_multicast_ether_addr(mac)) 1248 return -EINVAL; 1249 1250 sta = sta_info_alloc(sdata, mac, GFP_KERNEL); 1251 if (!sta) 1252 return -ENOMEM; 1253 1254 if (params->sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)) 1255 sta->sta.tdls = true; 1256 1257 err = sta_apply_parameters(local, sta, params); 1258 if (err) { 1259 sta_info_free(local, sta); 1260 return err; 1261 } 1262 1263 /* 1264 * for TDLS and for unassociated station, rate control should be 1265 * initialized only when rates are known and station is marked 1266 * authorized/associated 1267 */ 1268 if (!test_sta_flag(sta, WLAN_STA_TDLS_PEER) && 1269 test_sta_flag(sta, WLAN_STA_ASSOC)) 1270 rate_control_rate_init(sta); 1271 1272 layer2_update = sdata->vif.type == NL80211_IFTYPE_AP_VLAN || 1273 sdata->vif.type == NL80211_IFTYPE_AP; 1274 1275 err = sta_info_insert_rcu(sta); 1276 if (err) { 1277 rcu_read_unlock(); 1278 return err; 1279 } 1280 1281 if (layer2_update) 1282 ieee80211_send_layer2_update(sta); 1283 1284 rcu_read_unlock(); 1285 1286 return 0; 1287 } 1288 1289 static int ieee80211_del_station(struct wiphy *wiphy, struct net_device *dev, 1290 struct station_del_parameters *params) 1291 { 1292 struct ieee80211_sub_if_data *sdata; 1293 1294 sdata = IEEE80211_DEV_TO_SUB_IF(dev); 1295 1296 if (params->mac) 1297 return sta_info_destroy_addr_bss(sdata, params->mac); 1298 1299 sta_info_flush(sdata); 1300 return 0; 1301 } 1302 1303 static int ieee80211_change_station(struct wiphy *wiphy, 1304 struct net_device *dev, const u8 *mac, 1305 struct station_parameters *params) 1306 { 1307 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 1308 struct ieee80211_local *local = wiphy_priv(wiphy); 1309 struct sta_info *sta; 1310 struct ieee80211_sub_if_data *vlansdata; 1311 enum cfg80211_station_type statype; 1312 int err; 1313 1314 mutex_lock(&local->sta_mtx); 1315 1316 sta = sta_info_get_bss(sdata, mac); 1317 if (!sta) { 1318 err = -ENOENT; 1319 goto out_err; 1320 } 1321 1322 switch (sdata->vif.type) { 1323 case NL80211_IFTYPE_MESH_POINT: 1324 if (sdata->u.mesh.user_mpm) 1325 statype = CFG80211_STA_MESH_PEER_USER; 1326 else 1327 statype = CFG80211_STA_MESH_PEER_KERNEL; 1328 break; 1329 case NL80211_IFTYPE_ADHOC: 1330 statype = CFG80211_STA_IBSS; 1331 break; 1332 case NL80211_IFTYPE_STATION: 1333 if (!test_sta_flag(sta, WLAN_STA_TDLS_PEER)) { 1334 statype = CFG80211_STA_AP_STA; 1335 break; 1336 } 1337 if (test_sta_flag(sta, WLAN_STA_AUTHORIZED)) 1338 statype = CFG80211_STA_TDLS_PEER_ACTIVE; 1339 else 1340 statype = CFG80211_STA_TDLS_PEER_SETUP; 1341 break; 1342 case NL80211_IFTYPE_AP: 1343 case NL80211_IFTYPE_AP_VLAN: 1344 if (test_sta_flag(sta, WLAN_STA_ASSOC)) 1345 statype = CFG80211_STA_AP_CLIENT; 1346 else 1347 statype = CFG80211_STA_AP_CLIENT_UNASSOC; 1348 break; 1349 default: 1350 err = -EOPNOTSUPP; 1351 goto out_err; 1352 } 1353 1354 err = cfg80211_check_station_change(wiphy, params, statype); 1355 if (err) 1356 goto out_err; 1357 1358 if (params->vlan && params->vlan != sta->sdata->dev) { 1359 bool prev_4addr = false; 1360 bool new_4addr = false; 1361 1362 vlansdata = IEEE80211_DEV_TO_SUB_IF(params->vlan); 1363 1364 if (params->vlan->ieee80211_ptr->use_4addr) { 1365 if (vlansdata->u.vlan.sta) { 1366 err = -EBUSY; 1367 goto out_err; 1368 } 1369 1370 rcu_assign_pointer(vlansdata->u.vlan.sta, sta); 1371 new_4addr = true; 1372 __ieee80211_check_fast_rx_iface(vlansdata); 1373 } 1374 1375 if (sta->sdata->vif.type == NL80211_IFTYPE_AP_VLAN && 1376 sta->sdata->u.vlan.sta) { 1377 RCU_INIT_POINTER(sta->sdata->u.vlan.sta, NULL); 1378 prev_4addr = true; 1379 } 1380 1381 sta->sdata = vlansdata; 1382 ieee80211_check_fast_xmit(sta); 1383 1384 if (sta->sta_state == IEEE80211_STA_AUTHORIZED && 1385 prev_4addr != new_4addr) { 1386 if (new_4addr) 1387 atomic_dec(&sta->sdata->bss->num_mcast_sta); 1388 else 1389 atomic_inc(&sta->sdata->bss->num_mcast_sta); 1390 } 1391 1392 ieee80211_send_layer2_update(sta); 1393 } 1394 1395 err = sta_apply_parameters(local, sta, params); 1396 if (err) 1397 goto out_err; 1398 1399 mutex_unlock(&local->sta_mtx); 1400 1401 if ((sdata->vif.type == NL80211_IFTYPE_AP || 1402 sdata->vif.type == NL80211_IFTYPE_AP_VLAN) && 1403 sta->known_smps_mode != sta->sdata->bss->req_smps && 1404 test_sta_flag(sta, WLAN_STA_AUTHORIZED) && 1405 sta_info_tx_streams(sta) != 1) { 1406 ht_dbg(sta->sdata, 1407 "%pM just authorized and MIMO capable - update SMPS\n", 1408 sta->sta.addr); 1409 ieee80211_send_smps_action(sta->sdata, 1410 sta->sdata->bss->req_smps, 1411 sta->sta.addr, 1412 sta->sdata->vif.bss_conf.bssid); 1413 } 1414 1415 if (sdata->vif.type == NL80211_IFTYPE_STATION && 1416 params->sta_flags_mask & BIT(NL80211_STA_FLAG_AUTHORIZED)) { 1417 ieee80211_recalc_ps(local); 1418 ieee80211_recalc_ps_vif(sdata); 1419 } 1420 1421 return 0; 1422 out_err: 1423 mutex_unlock(&local->sta_mtx); 1424 return err; 1425 } 1426 1427 #ifdef CONFIG_MAC80211_MESH 1428 static int ieee80211_add_mpath(struct wiphy *wiphy, struct net_device *dev, 1429 const u8 *dst, const u8 *next_hop) 1430 { 1431 struct ieee80211_sub_if_data *sdata; 1432 struct mesh_path *mpath; 1433 struct sta_info *sta; 1434 1435 sdata = IEEE80211_DEV_TO_SUB_IF(dev); 1436 1437 rcu_read_lock(); 1438 sta = sta_info_get(sdata, next_hop); 1439 if (!sta) { 1440 rcu_read_unlock(); 1441 return -ENOENT; 1442 } 1443 1444 mpath = mesh_path_add(sdata, dst); 1445 if (IS_ERR(mpath)) { 1446 rcu_read_unlock(); 1447 return PTR_ERR(mpath); 1448 } 1449 1450 mesh_path_fix_nexthop(mpath, sta); 1451 1452 rcu_read_unlock(); 1453 return 0; 1454 } 1455 1456 static int ieee80211_del_mpath(struct wiphy *wiphy, struct net_device *dev, 1457 const u8 *dst) 1458 { 1459 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 1460 1461 if (dst) 1462 return mesh_path_del(sdata, dst); 1463 1464 mesh_path_flush_by_iface(sdata); 1465 return 0; 1466 } 1467 1468 static int ieee80211_change_mpath(struct wiphy *wiphy, struct net_device *dev, 1469 const u8 *dst, const u8 *next_hop) 1470 { 1471 struct ieee80211_sub_if_data *sdata; 1472 struct mesh_path *mpath; 1473 struct sta_info *sta; 1474 1475 sdata = IEEE80211_DEV_TO_SUB_IF(dev); 1476 1477 rcu_read_lock(); 1478 1479 sta = sta_info_get(sdata, next_hop); 1480 if (!sta) { 1481 rcu_read_unlock(); 1482 return -ENOENT; 1483 } 1484 1485 mpath = mesh_path_lookup(sdata, dst); 1486 if (!mpath) { 1487 rcu_read_unlock(); 1488 return -ENOENT; 1489 } 1490 1491 mesh_path_fix_nexthop(mpath, sta); 1492 1493 rcu_read_unlock(); 1494 return 0; 1495 } 1496 1497 static void mpath_set_pinfo(struct mesh_path *mpath, u8 *next_hop, 1498 struct mpath_info *pinfo) 1499 { 1500 struct sta_info *next_hop_sta = rcu_dereference(mpath->next_hop); 1501 1502 if (next_hop_sta) 1503 memcpy(next_hop, next_hop_sta->sta.addr, ETH_ALEN); 1504 else 1505 eth_zero_addr(next_hop); 1506 1507 memset(pinfo, 0, sizeof(*pinfo)); 1508 1509 pinfo->generation = mpath->sdata->u.mesh.mesh_paths_generation; 1510 1511 pinfo->filled = MPATH_INFO_FRAME_QLEN | 1512 MPATH_INFO_SN | 1513 MPATH_INFO_METRIC | 1514 MPATH_INFO_EXPTIME | 1515 MPATH_INFO_DISCOVERY_TIMEOUT | 1516 MPATH_INFO_DISCOVERY_RETRIES | 1517 MPATH_INFO_FLAGS; 1518 1519 pinfo->frame_qlen = mpath->frame_queue.qlen; 1520 pinfo->sn = mpath->sn; 1521 pinfo->metric = mpath->metric; 1522 if (time_before(jiffies, mpath->exp_time)) 1523 pinfo->exptime = jiffies_to_msecs(mpath->exp_time - jiffies); 1524 pinfo->discovery_timeout = 1525 jiffies_to_msecs(mpath->discovery_timeout); 1526 pinfo->discovery_retries = mpath->discovery_retries; 1527 if (mpath->flags & MESH_PATH_ACTIVE) 1528 pinfo->flags |= NL80211_MPATH_FLAG_ACTIVE; 1529 if (mpath->flags & MESH_PATH_RESOLVING) 1530 pinfo->flags |= NL80211_MPATH_FLAG_RESOLVING; 1531 if (mpath->flags & MESH_PATH_SN_VALID) 1532 pinfo->flags |= NL80211_MPATH_FLAG_SN_VALID; 1533 if (mpath->flags & MESH_PATH_FIXED) 1534 pinfo->flags |= NL80211_MPATH_FLAG_FIXED; 1535 if (mpath->flags & MESH_PATH_RESOLVED) 1536 pinfo->flags |= NL80211_MPATH_FLAG_RESOLVED; 1537 } 1538 1539 static int ieee80211_get_mpath(struct wiphy *wiphy, struct net_device *dev, 1540 u8 *dst, u8 *next_hop, struct mpath_info *pinfo) 1541 1542 { 1543 struct ieee80211_sub_if_data *sdata; 1544 struct mesh_path *mpath; 1545 1546 sdata = IEEE80211_DEV_TO_SUB_IF(dev); 1547 1548 rcu_read_lock(); 1549 mpath = mesh_path_lookup(sdata, dst); 1550 if (!mpath) { 1551 rcu_read_unlock(); 1552 return -ENOENT; 1553 } 1554 memcpy(dst, mpath->dst, ETH_ALEN); 1555 mpath_set_pinfo(mpath, next_hop, pinfo); 1556 rcu_read_unlock(); 1557 return 0; 1558 } 1559 1560 static int ieee80211_dump_mpath(struct wiphy *wiphy, struct net_device *dev, 1561 int idx, u8 *dst, u8 *next_hop, 1562 struct mpath_info *pinfo) 1563 { 1564 struct ieee80211_sub_if_data *sdata; 1565 struct mesh_path *mpath; 1566 1567 sdata = IEEE80211_DEV_TO_SUB_IF(dev); 1568 1569 rcu_read_lock(); 1570 mpath = mesh_path_lookup_by_idx(sdata, idx); 1571 if (!mpath) { 1572 rcu_read_unlock(); 1573 return -ENOENT; 1574 } 1575 memcpy(dst, mpath->dst, ETH_ALEN); 1576 mpath_set_pinfo(mpath, next_hop, pinfo); 1577 rcu_read_unlock(); 1578 return 0; 1579 } 1580 1581 static void mpp_set_pinfo(struct mesh_path *mpath, u8 *mpp, 1582 struct mpath_info *pinfo) 1583 { 1584 memset(pinfo, 0, sizeof(*pinfo)); 1585 memcpy(mpp, mpath->mpp, ETH_ALEN); 1586 1587 pinfo->generation = mpath->sdata->u.mesh.mpp_paths_generation; 1588 } 1589 1590 static int ieee80211_get_mpp(struct wiphy *wiphy, struct net_device *dev, 1591 u8 *dst, u8 *mpp, struct mpath_info *pinfo) 1592 1593 { 1594 struct ieee80211_sub_if_data *sdata; 1595 struct mesh_path *mpath; 1596 1597 sdata = IEEE80211_DEV_TO_SUB_IF(dev); 1598 1599 rcu_read_lock(); 1600 mpath = mpp_path_lookup(sdata, dst); 1601 if (!mpath) { 1602 rcu_read_unlock(); 1603 return -ENOENT; 1604 } 1605 memcpy(dst, mpath->dst, ETH_ALEN); 1606 mpp_set_pinfo(mpath, mpp, pinfo); 1607 rcu_read_unlock(); 1608 return 0; 1609 } 1610 1611 static int ieee80211_dump_mpp(struct wiphy *wiphy, struct net_device *dev, 1612 int idx, u8 *dst, u8 *mpp, 1613 struct mpath_info *pinfo) 1614 { 1615 struct ieee80211_sub_if_data *sdata; 1616 struct mesh_path *mpath; 1617 1618 sdata = IEEE80211_DEV_TO_SUB_IF(dev); 1619 1620 rcu_read_lock(); 1621 mpath = mpp_path_lookup_by_idx(sdata, idx); 1622 if (!mpath) { 1623 rcu_read_unlock(); 1624 return -ENOENT; 1625 } 1626 memcpy(dst, mpath->dst, ETH_ALEN); 1627 mpp_set_pinfo(mpath, mpp, pinfo); 1628 rcu_read_unlock(); 1629 return 0; 1630 } 1631 1632 static int ieee80211_get_mesh_config(struct wiphy *wiphy, 1633 struct net_device *dev, 1634 struct mesh_config *conf) 1635 { 1636 struct ieee80211_sub_if_data *sdata; 1637 sdata = IEEE80211_DEV_TO_SUB_IF(dev); 1638 1639 memcpy(conf, &(sdata->u.mesh.mshcfg), sizeof(struct mesh_config)); 1640 return 0; 1641 } 1642 1643 static inline bool _chg_mesh_attr(enum nl80211_meshconf_params parm, u32 mask) 1644 { 1645 return (mask >> (parm-1)) & 0x1; 1646 } 1647 1648 static int copy_mesh_setup(struct ieee80211_if_mesh *ifmsh, 1649 const struct mesh_setup *setup) 1650 { 1651 u8 *new_ie; 1652 const u8 *old_ie; 1653 struct ieee80211_sub_if_data *sdata = container_of(ifmsh, 1654 struct ieee80211_sub_if_data, u.mesh); 1655 1656 /* allocate information elements */ 1657 new_ie = NULL; 1658 old_ie = ifmsh->ie; 1659 1660 if (setup->ie_len) { 1661 new_ie = kmemdup(setup->ie, setup->ie_len, 1662 GFP_KERNEL); 1663 if (!new_ie) 1664 return -ENOMEM; 1665 } 1666 ifmsh->ie_len = setup->ie_len; 1667 ifmsh->ie = new_ie; 1668 kfree(old_ie); 1669 1670 /* now copy the rest of the setup parameters */ 1671 ifmsh->mesh_id_len = setup->mesh_id_len; 1672 memcpy(ifmsh->mesh_id, setup->mesh_id, ifmsh->mesh_id_len); 1673 ifmsh->mesh_sp_id = setup->sync_method; 1674 ifmsh->mesh_pp_id = setup->path_sel_proto; 1675 ifmsh->mesh_pm_id = setup->path_metric; 1676 ifmsh->user_mpm = setup->user_mpm; 1677 ifmsh->mesh_auth_id = setup->auth_id; 1678 ifmsh->security = IEEE80211_MESH_SEC_NONE; 1679 if (setup->is_authenticated) 1680 ifmsh->security |= IEEE80211_MESH_SEC_AUTHED; 1681 if (setup->is_secure) 1682 ifmsh->security |= IEEE80211_MESH_SEC_SECURED; 1683 1684 /* mcast rate setting in Mesh Node */ 1685 memcpy(sdata->vif.bss_conf.mcast_rate, setup->mcast_rate, 1686 sizeof(setup->mcast_rate)); 1687 sdata->vif.bss_conf.basic_rates = setup->basic_rates; 1688 1689 sdata->vif.bss_conf.beacon_int = setup->beacon_interval; 1690 sdata->vif.bss_conf.dtim_period = setup->dtim_period; 1691 1692 return 0; 1693 } 1694 1695 static int ieee80211_update_mesh_config(struct wiphy *wiphy, 1696 struct net_device *dev, u32 mask, 1697 const struct mesh_config *nconf) 1698 { 1699 struct mesh_config *conf; 1700 struct ieee80211_sub_if_data *sdata; 1701 struct ieee80211_if_mesh *ifmsh; 1702 1703 sdata = IEEE80211_DEV_TO_SUB_IF(dev); 1704 ifmsh = &sdata->u.mesh; 1705 1706 /* Set the config options which we are interested in setting */ 1707 conf = &(sdata->u.mesh.mshcfg); 1708 if (_chg_mesh_attr(NL80211_MESHCONF_RETRY_TIMEOUT, mask)) 1709 conf->dot11MeshRetryTimeout = nconf->dot11MeshRetryTimeout; 1710 if (_chg_mesh_attr(NL80211_MESHCONF_CONFIRM_TIMEOUT, mask)) 1711 conf->dot11MeshConfirmTimeout = nconf->dot11MeshConfirmTimeout; 1712 if (_chg_mesh_attr(NL80211_MESHCONF_HOLDING_TIMEOUT, mask)) 1713 conf->dot11MeshHoldingTimeout = nconf->dot11MeshHoldingTimeout; 1714 if (_chg_mesh_attr(NL80211_MESHCONF_MAX_PEER_LINKS, mask)) 1715 conf->dot11MeshMaxPeerLinks = nconf->dot11MeshMaxPeerLinks; 1716 if (_chg_mesh_attr(NL80211_MESHCONF_MAX_RETRIES, mask)) 1717 conf->dot11MeshMaxRetries = nconf->dot11MeshMaxRetries; 1718 if (_chg_mesh_attr(NL80211_MESHCONF_TTL, mask)) 1719 conf->dot11MeshTTL = nconf->dot11MeshTTL; 1720 if (_chg_mesh_attr(NL80211_MESHCONF_ELEMENT_TTL, mask)) 1721 conf->element_ttl = nconf->element_ttl; 1722 if (_chg_mesh_attr(NL80211_MESHCONF_AUTO_OPEN_PLINKS, mask)) { 1723 if (ifmsh->user_mpm) 1724 return -EBUSY; 1725 conf->auto_open_plinks = nconf->auto_open_plinks; 1726 } 1727 if (_chg_mesh_attr(NL80211_MESHCONF_SYNC_OFFSET_MAX_NEIGHBOR, mask)) 1728 conf->dot11MeshNbrOffsetMaxNeighbor = 1729 nconf->dot11MeshNbrOffsetMaxNeighbor; 1730 if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES, mask)) 1731 conf->dot11MeshHWMPmaxPREQretries = 1732 nconf->dot11MeshHWMPmaxPREQretries; 1733 if (_chg_mesh_attr(NL80211_MESHCONF_PATH_REFRESH_TIME, mask)) 1734 conf->path_refresh_time = nconf->path_refresh_time; 1735 if (_chg_mesh_attr(NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT, mask)) 1736 conf->min_discovery_timeout = nconf->min_discovery_timeout; 1737 if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT, mask)) 1738 conf->dot11MeshHWMPactivePathTimeout = 1739 nconf->dot11MeshHWMPactivePathTimeout; 1740 if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL, mask)) 1741 conf->dot11MeshHWMPpreqMinInterval = 1742 nconf->dot11MeshHWMPpreqMinInterval; 1743 if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_PERR_MIN_INTERVAL, mask)) 1744 conf->dot11MeshHWMPperrMinInterval = 1745 nconf->dot11MeshHWMPperrMinInterval; 1746 if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME, 1747 mask)) 1748 conf->dot11MeshHWMPnetDiameterTraversalTime = 1749 nconf->dot11MeshHWMPnetDiameterTraversalTime; 1750 if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_ROOTMODE, mask)) { 1751 conf->dot11MeshHWMPRootMode = nconf->dot11MeshHWMPRootMode; 1752 ieee80211_mesh_root_setup(ifmsh); 1753 } 1754 if (_chg_mesh_attr(NL80211_MESHCONF_GATE_ANNOUNCEMENTS, mask)) { 1755 /* our current gate announcement implementation rides on root 1756 * announcements, so require this ifmsh to also be a root node 1757 * */ 1758 if (nconf->dot11MeshGateAnnouncementProtocol && 1759 !(conf->dot11MeshHWMPRootMode > IEEE80211_ROOTMODE_ROOT)) { 1760 conf->dot11MeshHWMPRootMode = IEEE80211_PROACTIVE_RANN; 1761 ieee80211_mesh_root_setup(ifmsh); 1762 } 1763 conf->dot11MeshGateAnnouncementProtocol = 1764 nconf->dot11MeshGateAnnouncementProtocol; 1765 } 1766 if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_RANN_INTERVAL, mask)) 1767 conf->dot11MeshHWMPRannInterval = 1768 nconf->dot11MeshHWMPRannInterval; 1769 if (_chg_mesh_attr(NL80211_MESHCONF_FORWARDING, mask)) 1770 conf->dot11MeshForwarding = nconf->dot11MeshForwarding; 1771 if (_chg_mesh_attr(NL80211_MESHCONF_RSSI_THRESHOLD, mask)) { 1772 /* our RSSI threshold implementation is supported only for 1773 * devices that report signal in dBm. 1774 */ 1775 if (!ieee80211_hw_check(&sdata->local->hw, SIGNAL_DBM)) 1776 return -ENOTSUPP; 1777 conf->rssi_threshold = nconf->rssi_threshold; 1778 } 1779 if (_chg_mesh_attr(NL80211_MESHCONF_HT_OPMODE, mask)) { 1780 conf->ht_opmode = nconf->ht_opmode; 1781 sdata->vif.bss_conf.ht_operation_mode = nconf->ht_opmode; 1782 ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_HT); 1783 } 1784 if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_PATH_TO_ROOT_TIMEOUT, mask)) 1785 conf->dot11MeshHWMPactivePathToRootTimeout = 1786 nconf->dot11MeshHWMPactivePathToRootTimeout; 1787 if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_ROOT_INTERVAL, mask)) 1788 conf->dot11MeshHWMProotInterval = 1789 nconf->dot11MeshHWMProotInterval; 1790 if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_CONFIRMATION_INTERVAL, mask)) 1791 conf->dot11MeshHWMPconfirmationInterval = 1792 nconf->dot11MeshHWMPconfirmationInterval; 1793 if (_chg_mesh_attr(NL80211_MESHCONF_POWER_MODE, mask)) { 1794 conf->power_mode = nconf->power_mode; 1795 ieee80211_mps_local_status_update(sdata); 1796 } 1797 if (_chg_mesh_attr(NL80211_MESHCONF_AWAKE_WINDOW, mask)) 1798 conf->dot11MeshAwakeWindowDuration = 1799 nconf->dot11MeshAwakeWindowDuration; 1800 if (_chg_mesh_attr(NL80211_MESHCONF_PLINK_TIMEOUT, mask)) 1801 conf->plink_timeout = nconf->plink_timeout; 1802 ieee80211_mbss_info_change_notify(sdata, BSS_CHANGED_BEACON); 1803 return 0; 1804 } 1805 1806 static int ieee80211_join_mesh(struct wiphy *wiphy, struct net_device *dev, 1807 const struct mesh_config *conf, 1808 const struct mesh_setup *setup) 1809 { 1810 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 1811 struct ieee80211_if_mesh *ifmsh = &sdata->u.mesh; 1812 int err; 1813 1814 memcpy(&ifmsh->mshcfg, conf, sizeof(struct mesh_config)); 1815 err = copy_mesh_setup(ifmsh, setup); 1816 if (err) 1817 return err; 1818 1819 /* can mesh use other SMPS modes? */ 1820 sdata->smps_mode = IEEE80211_SMPS_OFF; 1821 sdata->needed_rx_chains = sdata->local->rx_chains; 1822 1823 mutex_lock(&sdata->local->mtx); 1824 err = ieee80211_vif_use_channel(sdata, &setup->chandef, 1825 IEEE80211_CHANCTX_SHARED); 1826 mutex_unlock(&sdata->local->mtx); 1827 if (err) 1828 return err; 1829 1830 return ieee80211_start_mesh(sdata); 1831 } 1832 1833 static int ieee80211_leave_mesh(struct wiphy *wiphy, struct net_device *dev) 1834 { 1835 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 1836 1837 ieee80211_stop_mesh(sdata); 1838 mutex_lock(&sdata->local->mtx); 1839 ieee80211_vif_release_channel(sdata); 1840 mutex_unlock(&sdata->local->mtx); 1841 1842 return 0; 1843 } 1844 #endif 1845 1846 static int ieee80211_change_bss(struct wiphy *wiphy, 1847 struct net_device *dev, 1848 struct bss_parameters *params) 1849 { 1850 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 1851 enum nl80211_band band; 1852 u32 changed = 0; 1853 1854 if (!sdata_dereference(sdata->u.ap.beacon, sdata)) 1855 return -ENOENT; 1856 1857 band = ieee80211_get_sdata_band(sdata); 1858 1859 if (params->use_cts_prot >= 0) { 1860 sdata->vif.bss_conf.use_cts_prot = params->use_cts_prot; 1861 changed |= BSS_CHANGED_ERP_CTS_PROT; 1862 } 1863 if (params->use_short_preamble >= 0) { 1864 sdata->vif.bss_conf.use_short_preamble = 1865 params->use_short_preamble; 1866 changed |= BSS_CHANGED_ERP_PREAMBLE; 1867 } 1868 1869 if (!sdata->vif.bss_conf.use_short_slot && 1870 band == NL80211_BAND_5GHZ) { 1871 sdata->vif.bss_conf.use_short_slot = true; 1872 changed |= BSS_CHANGED_ERP_SLOT; 1873 } 1874 1875 if (params->use_short_slot_time >= 0) { 1876 sdata->vif.bss_conf.use_short_slot = 1877 params->use_short_slot_time; 1878 changed |= BSS_CHANGED_ERP_SLOT; 1879 } 1880 1881 if (params->basic_rates) { 1882 ieee80211_parse_bitrates(&sdata->vif.bss_conf.chandef, 1883 wiphy->bands[band], 1884 params->basic_rates, 1885 params->basic_rates_len, 1886 &sdata->vif.bss_conf.basic_rates); 1887 changed |= BSS_CHANGED_BASIC_RATES; 1888 } 1889 1890 if (params->ap_isolate >= 0) { 1891 if (params->ap_isolate) 1892 sdata->flags |= IEEE80211_SDATA_DONT_BRIDGE_PACKETS; 1893 else 1894 sdata->flags &= ~IEEE80211_SDATA_DONT_BRIDGE_PACKETS; 1895 ieee80211_check_fast_rx_iface(sdata); 1896 } 1897 1898 if (params->ht_opmode >= 0) { 1899 sdata->vif.bss_conf.ht_operation_mode = 1900 (u16) params->ht_opmode; 1901 changed |= BSS_CHANGED_HT; 1902 } 1903 1904 if (params->p2p_ctwindow >= 0) { 1905 sdata->vif.bss_conf.p2p_noa_attr.oppps_ctwindow &= 1906 ~IEEE80211_P2P_OPPPS_CTWINDOW_MASK; 1907 sdata->vif.bss_conf.p2p_noa_attr.oppps_ctwindow |= 1908 params->p2p_ctwindow & IEEE80211_P2P_OPPPS_CTWINDOW_MASK; 1909 changed |= BSS_CHANGED_P2P_PS; 1910 } 1911 1912 if (params->p2p_opp_ps > 0) { 1913 sdata->vif.bss_conf.p2p_noa_attr.oppps_ctwindow |= 1914 IEEE80211_P2P_OPPPS_ENABLE_BIT; 1915 changed |= BSS_CHANGED_P2P_PS; 1916 } else if (params->p2p_opp_ps == 0) { 1917 sdata->vif.bss_conf.p2p_noa_attr.oppps_ctwindow &= 1918 ~IEEE80211_P2P_OPPPS_ENABLE_BIT; 1919 changed |= BSS_CHANGED_P2P_PS; 1920 } 1921 1922 ieee80211_bss_info_change_notify(sdata, changed); 1923 1924 return 0; 1925 } 1926 1927 static int ieee80211_set_txq_params(struct wiphy *wiphy, 1928 struct net_device *dev, 1929 struct ieee80211_txq_params *params) 1930 { 1931 struct ieee80211_local *local = wiphy_priv(wiphy); 1932 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 1933 struct ieee80211_tx_queue_params p; 1934 1935 if (!local->ops->conf_tx) 1936 return -EOPNOTSUPP; 1937 1938 if (local->hw.queues < IEEE80211_NUM_ACS) 1939 return -EOPNOTSUPP; 1940 1941 memset(&p, 0, sizeof(p)); 1942 p.aifs = params->aifs; 1943 p.cw_max = params->cwmax; 1944 p.cw_min = params->cwmin; 1945 p.txop = params->txop; 1946 1947 /* 1948 * Setting tx queue params disables u-apsd because it's only 1949 * called in master mode. 1950 */ 1951 p.uapsd = false; 1952 1953 sdata->tx_conf[params->ac] = p; 1954 if (drv_conf_tx(local, sdata, params->ac, &p)) { 1955 wiphy_debug(local->hw.wiphy, 1956 "failed to set TX queue parameters for AC %d\n", 1957 params->ac); 1958 return -EINVAL; 1959 } 1960 1961 ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_QOS); 1962 1963 return 0; 1964 } 1965 1966 #ifdef CONFIG_PM 1967 static int ieee80211_suspend(struct wiphy *wiphy, 1968 struct cfg80211_wowlan *wowlan) 1969 { 1970 return __ieee80211_suspend(wiphy_priv(wiphy), wowlan); 1971 } 1972 1973 static int ieee80211_resume(struct wiphy *wiphy) 1974 { 1975 return __ieee80211_resume(wiphy_priv(wiphy)); 1976 } 1977 #else 1978 #define ieee80211_suspend NULL 1979 #define ieee80211_resume NULL 1980 #endif 1981 1982 static int ieee80211_scan(struct wiphy *wiphy, 1983 struct cfg80211_scan_request *req) 1984 { 1985 struct ieee80211_sub_if_data *sdata; 1986 1987 sdata = IEEE80211_WDEV_TO_SUB_IF(req->wdev); 1988 1989 switch (ieee80211_vif_type_p2p(&sdata->vif)) { 1990 case NL80211_IFTYPE_STATION: 1991 case NL80211_IFTYPE_ADHOC: 1992 case NL80211_IFTYPE_MESH_POINT: 1993 case NL80211_IFTYPE_P2P_CLIENT: 1994 case NL80211_IFTYPE_P2P_DEVICE: 1995 break; 1996 case NL80211_IFTYPE_P2P_GO: 1997 if (sdata->local->ops->hw_scan) 1998 break; 1999 /* 2000 * FIXME: implement NoA while scanning in software, 2001 * for now fall through to allow scanning only when 2002 * beaconing hasn't been configured yet 2003 */ 2004 case NL80211_IFTYPE_AP: 2005 /* 2006 * If the scan has been forced (and the driver supports 2007 * forcing), don't care about being beaconing already. 2008 * This will create problems to the attached stations (e.g. all 2009 * the frames sent while scanning on other channel will be 2010 * lost) 2011 */ 2012 if (sdata->u.ap.beacon && 2013 (!(wiphy->features & NL80211_FEATURE_AP_SCAN) || 2014 !(req->flags & NL80211_SCAN_FLAG_AP))) 2015 return -EOPNOTSUPP; 2016 break; 2017 default: 2018 return -EOPNOTSUPP; 2019 } 2020 2021 return ieee80211_request_scan(sdata, req); 2022 } 2023 2024 static void ieee80211_abort_scan(struct wiphy *wiphy, struct wireless_dev *wdev) 2025 { 2026 ieee80211_scan_cancel(wiphy_priv(wiphy)); 2027 } 2028 2029 static int 2030 ieee80211_sched_scan_start(struct wiphy *wiphy, 2031 struct net_device *dev, 2032 struct cfg80211_sched_scan_request *req) 2033 { 2034 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 2035 2036 if (!sdata->local->ops->sched_scan_start) 2037 return -EOPNOTSUPP; 2038 2039 return ieee80211_request_sched_scan_start(sdata, req); 2040 } 2041 2042 static int 2043 ieee80211_sched_scan_stop(struct wiphy *wiphy, struct net_device *dev) 2044 { 2045 struct ieee80211_local *local = wiphy_priv(wiphy); 2046 2047 if (!local->ops->sched_scan_stop) 2048 return -EOPNOTSUPP; 2049 2050 return ieee80211_request_sched_scan_stop(local); 2051 } 2052 2053 static int ieee80211_auth(struct wiphy *wiphy, struct net_device *dev, 2054 struct cfg80211_auth_request *req) 2055 { 2056 return ieee80211_mgd_auth(IEEE80211_DEV_TO_SUB_IF(dev), req); 2057 } 2058 2059 static int ieee80211_assoc(struct wiphy *wiphy, struct net_device *dev, 2060 struct cfg80211_assoc_request *req) 2061 { 2062 return ieee80211_mgd_assoc(IEEE80211_DEV_TO_SUB_IF(dev), req); 2063 } 2064 2065 static int ieee80211_deauth(struct wiphy *wiphy, struct net_device *dev, 2066 struct cfg80211_deauth_request *req) 2067 { 2068 return ieee80211_mgd_deauth(IEEE80211_DEV_TO_SUB_IF(dev), req); 2069 } 2070 2071 static int ieee80211_disassoc(struct wiphy *wiphy, struct net_device *dev, 2072 struct cfg80211_disassoc_request *req) 2073 { 2074 return ieee80211_mgd_disassoc(IEEE80211_DEV_TO_SUB_IF(dev), req); 2075 } 2076 2077 static int ieee80211_join_ibss(struct wiphy *wiphy, struct net_device *dev, 2078 struct cfg80211_ibss_params *params) 2079 { 2080 return ieee80211_ibss_join(IEEE80211_DEV_TO_SUB_IF(dev), params); 2081 } 2082 2083 static int ieee80211_leave_ibss(struct wiphy *wiphy, struct net_device *dev) 2084 { 2085 return ieee80211_ibss_leave(IEEE80211_DEV_TO_SUB_IF(dev)); 2086 } 2087 2088 static int ieee80211_join_ocb(struct wiphy *wiphy, struct net_device *dev, 2089 struct ocb_setup *setup) 2090 { 2091 return ieee80211_ocb_join(IEEE80211_DEV_TO_SUB_IF(dev), setup); 2092 } 2093 2094 static int ieee80211_leave_ocb(struct wiphy *wiphy, struct net_device *dev) 2095 { 2096 return ieee80211_ocb_leave(IEEE80211_DEV_TO_SUB_IF(dev)); 2097 } 2098 2099 static int ieee80211_set_mcast_rate(struct wiphy *wiphy, struct net_device *dev, 2100 int rate[NUM_NL80211_BANDS]) 2101 { 2102 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 2103 2104 memcpy(sdata->vif.bss_conf.mcast_rate, rate, 2105 sizeof(int) * NUM_NL80211_BANDS); 2106 2107 return 0; 2108 } 2109 2110 static int ieee80211_set_wiphy_params(struct wiphy *wiphy, u32 changed) 2111 { 2112 struct ieee80211_local *local = wiphy_priv(wiphy); 2113 int err; 2114 2115 if (changed & WIPHY_PARAM_FRAG_THRESHOLD) { 2116 ieee80211_check_fast_xmit_all(local); 2117 2118 err = drv_set_frag_threshold(local, wiphy->frag_threshold); 2119 2120 if (err) { 2121 ieee80211_check_fast_xmit_all(local); 2122 return err; 2123 } 2124 } 2125 2126 if ((changed & WIPHY_PARAM_COVERAGE_CLASS) || 2127 (changed & WIPHY_PARAM_DYN_ACK)) { 2128 s16 coverage_class; 2129 2130 coverage_class = changed & WIPHY_PARAM_COVERAGE_CLASS ? 2131 wiphy->coverage_class : -1; 2132 err = drv_set_coverage_class(local, coverage_class); 2133 2134 if (err) 2135 return err; 2136 } 2137 2138 if (changed & WIPHY_PARAM_RTS_THRESHOLD) { 2139 err = drv_set_rts_threshold(local, wiphy->rts_threshold); 2140 2141 if (err) 2142 return err; 2143 } 2144 2145 if (changed & WIPHY_PARAM_RETRY_SHORT) { 2146 if (wiphy->retry_short > IEEE80211_MAX_TX_RETRY) 2147 return -EINVAL; 2148 local->hw.conf.short_frame_max_tx_count = wiphy->retry_short; 2149 } 2150 if (changed & WIPHY_PARAM_RETRY_LONG) { 2151 if (wiphy->retry_long > IEEE80211_MAX_TX_RETRY) 2152 return -EINVAL; 2153 local->hw.conf.long_frame_max_tx_count = wiphy->retry_long; 2154 } 2155 if (changed & 2156 (WIPHY_PARAM_RETRY_SHORT | WIPHY_PARAM_RETRY_LONG)) 2157 ieee80211_hw_config(local, IEEE80211_CONF_CHANGE_RETRY_LIMITS); 2158 2159 return 0; 2160 } 2161 2162 static int ieee80211_set_tx_power(struct wiphy *wiphy, 2163 struct wireless_dev *wdev, 2164 enum nl80211_tx_power_setting type, int mbm) 2165 { 2166 struct ieee80211_local *local = wiphy_priv(wiphy); 2167 struct ieee80211_sub_if_data *sdata; 2168 enum nl80211_tx_power_setting txp_type = type; 2169 bool update_txp_type = false; 2170 2171 if (wdev) { 2172 sdata = IEEE80211_WDEV_TO_SUB_IF(wdev); 2173 2174 switch (type) { 2175 case NL80211_TX_POWER_AUTOMATIC: 2176 sdata->user_power_level = IEEE80211_UNSET_POWER_LEVEL; 2177 txp_type = NL80211_TX_POWER_LIMITED; 2178 break; 2179 case NL80211_TX_POWER_LIMITED: 2180 case NL80211_TX_POWER_FIXED: 2181 if (mbm < 0 || (mbm % 100)) 2182 return -EOPNOTSUPP; 2183 sdata->user_power_level = MBM_TO_DBM(mbm); 2184 break; 2185 } 2186 2187 if (txp_type != sdata->vif.bss_conf.txpower_type) { 2188 update_txp_type = true; 2189 sdata->vif.bss_conf.txpower_type = txp_type; 2190 } 2191 2192 ieee80211_recalc_txpower(sdata, update_txp_type); 2193 2194 return 0; 2195 } 2196 2197 switch (type) { 2198 case NL80211_TX_POWER_AUTOMATIC: 2199 local->user_power_level = IEEE80211_UNSET_POWER_LEVEL; 2200 txp_type = NL80211_TX_POWER_LIMITED; 2201 break; 2202 case NL80211_TX_POWER_LIMITED: 2203 case NL80211_TX_POWER_FIXED: 2204 if (mbm < 0 || (mbm % 100)) 2205 return -EOPNOTSUPP; 2206 local->user_power_level = MBM_TO_DBM(mbm); 2207 break; 2208 } 2209 2210 mutex_lock(&local->iflist_mtx); 2211 list_for_each_entry(sdata, &local->interfaces, list) { 2212 sdata->user_power_level = local->user_power_level; 2213 if (txp_type != sdata->vif.bss_conf.txpower_type) 2214 update_txp_type = true; 2215 sdata->vif.bss_conf.txpower_type = txp_type; 2216 } 2217 list_for_each_entry(sdata, &local->interfaces, list) 2218 ieee80211_recalc_txpower(sdata, update_txp_type); 2219 mutex_unlock(&local->iflist_mtx); 2220 2221 return 0; 2222 } 2223 2224 static int ieee80211_get_tx_power(struct wiphy *wiphy, 2225 struct wireless_dev *wdev, 2226 int *dbm) 2227 { 2228 struct ieee80211_local *local = wiphy_priv(wiphy); 2229 struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev); 2230 2231 if (local->ops->get_txpower) 2232 return drv_get_txpower(local, sdata, dbm); 2233 2234 if (!local->use_chanctx) 2235 *dbm = local->hw.conf.power_level; 2236 else 2237 *dbm = sdata->vif.bss_conf.txpower; 2238 2239 return 0; 2240 } 2241 2242 static int ieee80211_set_wds_peer(struct wiphy *wiphy, struct net_device *dev, 2243 const u8 *addr) 2244 { 2245 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 2246 2247 memcpy(&sdata->u.wds.remote_addr, addr, ETH_ALEN); 2248 2249 return 0; 2250 } 2251 2252 static void ieee80211_rfkill_poll(struct wiphy *wiphy) 2253 { 2254 struct ieee80211_local *local = wiphy_priv(wiphy); 2255 2256 drv_rfkill_poll(local); 2257 } 2258 2259 #ifdef CONFIG_NL80211_TESTMODE 2260 static int ieee80211_testmode_cmd(struct wiphy *wiphy, 2261 struct wireless_dev *wdev, 2262 void *data, int len) 2263 { 2264 struct ieee80211_local *local = wiphy_priv(wiphy); 2265 struct ieee80211_vif *vif = NULL; 2266 2267 if (!local->ops->testmode_cmd) 2268 return -EOPNOTSUPP; 2269 2270 if (wdev) { 2271 struct ieee80211_sub_if_data *sdata; 2272 2273 sdata = IEEE80211_WDEV_TO_SUB_IF(wdev); 2274 if (sdata->flags & IEEE80211_SDATA_IN_DRIVER) 2275 vif = &sdata->vif; 2276 } 2277 2278 return local->ops->testmode_cmd(&local->hw, vif, data, len); 2279 } 2280 2281 static int ieee80211_testmode_dump(struct wiphy *wiphy, 2282 struct sk_buff *skb, 2283 struct netlink_callback *cb, 2284 void *data, int len) 2285 { 2286 struct ieee80211_local *local = wiphy_priv(wiphy); 2287 2288 if (!local->ops->testmode_dump) 2289 return -EOPNOTSUPP; 2290 2291 return local->ops->testmode_dump(&local->hw, skb, cb, data, len); 2292 } 2293 #endif 2294 2295 int __ieee80211_request_smps_ap(struct ieee80211_sub_if_data *sdata, 2296 enum ieee80211_smps_mode smps_mode) 2297 { 2298 struct sta_info *sta; 2299 enum ieee80211_smps_mode old_req; 2300 2301 if (WARN_ON_ONCE(sdata->vif.type != NL80211_IFTYPE_AP)) 2302 return -EINVAL; 2303 2304 if (sdata->vif.bss_conf.chandef.width == NL80211_CHAN_WIDTH_20_NOHT) 2305 return 0; 2306 2307 old_req = sdata->u.ap.req_smps; 2308 sdata->u.ap.req_smps = smps_mode; 2309 2310 /* AUTOMATIC doesn't mean much for AP - don't allow it */ 2311 if (old_req == smps_mode || 2312 smps_mode == IEEE80211_SMPS_AUTOMATIC) 2313 return 0; 2314 2315 /* If no associated stations, there's no need to do anything */ 2316 if (!atomic_read(&sdata->u.ap.num_mcast_sta)) { 2317 sdata->smps_mode = smps_mode; 2318 ieee80211_queue_work(&sdata->local->hw, &sdata->recalc_smps); 2319 return 0; 2320 } 2321 2322 ht_dbg(sdata, 2323 "SMPS %d requested in AP mode, sending Action frame to %d stations\n", 2324 smps_mode, atomic_read(&sdata->u.ap.num_mcast_sta)); 2325 2326 mutex_lock(&sdata->local->sta_mtx); 2327 list_for_each_entry(sta, &sdata->local->sta_list, list) { 2328 /* 2329 * Only stations associated to our AP and 2330 * associated VLANs 2331 */ 2332 if (sta->sdata->bss != &sdata->u.ap) 2333 continue; 2334 2335 /* This station doesn't support MIMO - skip it */ 2336 if (sta_info_tx_streams(sta) == 1) 2337 continue; 2338 2339 /* 2340 * Don't wake up a STA just to send the action frame 2341 * unless we are getting more restrictive. 2342 */ 2343 if (test_sta_flag(sta, WLAN_STA_PS_STA) && 2344 !ieee80211_smps_is_restrictive(sta->known_smps_mode, 2345 smps_mode)) { 2346 ht_dbg(sdata, "Won't send SMPS to sleeping STA %pM\n", 2347 sta->sta.addr); 2348 continue; 2349 } 2350 2351 /* 2352 * If the STA is not authorized, wait until it gets 2353 * authorized and the action frame will be sent then. 2354 */ 2355 if (!test_sta_flag(sta, WLAN_STA_AUTHORIZED)) 2356 continue; 2357 2358 ht_dbg(sdata, "Sending SMPS to %pM\n", sta->sta.addr); 2359 ieee80211_send_smps_action(sdata, smps_mode, sta->sta.addr, 2360 sdata->vif.bss_conf.bssid); 2361 } 2362 mutex_unlock(&sdata->local->sta_mtx); 2363 2364 sdata->smps_mode = smps_mode; 2365 ieee80211_queue_work(&sdata->local->hw, &sdata->recalc_smps); 2366 2367 return 0; 2368 } 2369 2370 int __ieee80211_request_smps_mgd(struct ieee80211_sub_if_data *sdata, 2371 enum ieee80211_smps_mode smps_mode) 2372 { 2373 const u8 *ap; 2374 enum ieee80211_smps_mode old_req; 2375 int err; 2376 struct sta_info *sta; 2377 bool tdls_peer_found = false; 2378 2379 lockdep_assert_held(&sdata->wdev.mtx); 2380 2381 if (WARN_ON_ONCE(sdata->vif.type != NL80211_IFTYPE_STATION)) 2382 return -EINVAL; 2383 2384 old_req = sdata->u.mgd.req_smps; 2385 sdata->u.mgd.req_smps = smps_mode; 2386 2387 if (old_req == smps_mode && 2388 smps_mode != IEEE80211_SMPS_AUTOMATIC) 2389 return 0; 2390 2391 /* 2392 * If not associated, or current association is not an HT 2393 * association, there's no need to do anything, just store 2394 * the new value until we associate. 2395 */ 2396 if (!sdata->u.mgd.associated || 2397 sdata->vif.bss_conf.chandef.width == NL80211_CHAN_WIDTH_20_NOHT) 2398 return 0; 2399 2400 ap = sdata->u.mgd.associated->bssid; 2401 2402 rcu_read_lock(); 2403 list_for_each_entry_rcu(sta, &sdata->local->sta_list, list) { 2404 if (!sta->sta.tdls || sta->sdata != sdata || !sta->uploaded || 2405 !test_sta_flag(sta, WLAN_STA_AUTHORIZED)) 2406 continue; 2407 2408 tdls_peer_found = true; 2409 break; 2410 } 2411 rcu_read_unlock(); 2412 2413 if (smps_mode == IEEE80211_SMPS_AUTOMATIC) { 2414 if (tdls_peer_found || !sdata->u.mgd.powersave) 2415 smps_mode = IEEE80211_SMPS_OFF; 2416 else 2417 smps_mode = IEEE80211_SMPS_DYNAMIC; 2418 } 2419 2420 /* send SM PS frame to AP */ 2421 err = ieee80211_send_smps_action(sdata, smps_mode, 2422 ap, ap); 2423 if (err) 2424 sdata->u.mgd.req_smps = old_req; 2425 else if (smps_mode != IEEE80211_SMPS_OFF && tdls_peer_found) 2426 ieee80211_teardown_tdls_peers(sdata); 2427 2428 return err; 2429 } 2430 2431 static int ieee80211_set_power_mgmt(struct wiphy *wiphy, struct net_device *dev, 2432 bool enabled, int timeout) 2433 { 2434 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 2435 struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr); 2436 2437 if (sdata->vif.type != NL80211_IFTYPE_STATION) 2438 return -EOPNOTSUPP; 2439 2440 if (!ieee80211_hw_check(&local->hw, SUPPORTS_PS)) 2441 return -EOPNOTSUPP; 2442 2443 if (enabled == sdata->u.mgd.powersave && 2444 timeout == local->dynamic_ps_forced_timeout) 2445 return 0; 2446 2447 sdata->u.mgd.powersave = enabled; 2448 local->dynamic_ps_forced_timeout = timeout; 2449 2450 /* no change, but if automatic follow powersave */ 2451 sdata_lock(sdata); 2452 __ieee80211_request_smps_mgd(sdata, sdata->u.mgd.req_smps); 2453 sdata_unlock(sdata); 2454 2455 if (ieee80211_hw_check(&local->hw, SUPPORTS_DYNAMIC_PS)) 2456 ieee80211_hw_config(local, IEEE80211_CONF_CHANGE_PS); 2457 2458 ieee80211_recalc_ps(local); 2459 ieee80211_recalc_ps_vif(sdata); 2460 2461 return 0; 2462 } 2463 2464 static int ieee80211_set_cqm_rssi_config(struct wiphy *wiphy, 2465 struct net_device *dev, 2466 s32 rssi_thold, u32 rssi_hyst) 2467 { 2468 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 2469 struct ieee80211_vif *vif = &sdata->vif; 2470 struct ieee80211_bss_conf *bss_conf = &vif->bss_conf; 2471 2472 if (rssi_thold == bss_conf->cqm_rssi_thold && 2473 rssi_hyst == bss_conf->cqm_rssi_hyst) 2474 return 0; 2475 2476 if (sdata->vif.driver_flags & IEEE80211_VIF_BEACON_FILTER && 2477 !(sdata->vif.driver_flags & IEEE80211_VIF_SUPPORTS_CQM_RSSI)) 2478 return -EOPNOTSUPP; 2479 2480 bss_conf->cqm_rssi_thold = rssi_thold; 2481 bss_conf->cqm_rssi_hyst = rssi_hyst; 2482 sdata->u.mgd.last_cqm_event_signal = 0; 2483 2484 /* tell the driver upon association, unless already associated */ 2485 if (sdata->u.mgd.associated && 2486 sdata->vif.driver_flags & IEEE80211_VIF_SUPPORTS_CQM_RSSI) 2487 ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_CQM); 2488 2489 return 0; 2490 } 2491 2492 static int ieee80211_set_bitrate_mask(struct wiphy *wiphy, 2493 struct net_device *dev, 2494 const u8 *addr, 2495 const struct cfg80211_bitrate_mask *mask) 2496 { 2497 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 2498 struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr); 2499 int i, ret; 2500 2501 if (!ieee80211_sdata_running(sdata)) 2502 return -ENETDOWN; 2503 2504 if (ieee80211_hw_check(&local->hw, HAS_RATE_CONTROL)) { 2505 ret = drv_set_bitrate_mask(local, sdata, mask); 2506 if (ret) 2507 return ret; 2508 } 2509 2510 for (i = 0; i < NUM_NL80211_BANDS; i++) { 2511 struct ieee80211_supported_band *sband = wiphy->bands[i]; 2512 int j; 2513 2514 sdata->rc_rateidx_mask[i] = mask->control[i].legacy; 2515 memcpy(sdata->rc_rateidx_mcs_mask[i], mask->control[i].ht_mcs, 2516 sizeof(mask->control[i].ht_mcs)); 2517 memcpy(sdata->rc_rateidx_vht_mcs_mask[i], 2518 mask->control[i].vht_mcs, 2519 sizeof(mask->control[i].vht_mcs)); 2520 2521 sdata->rc_has_mcs_mask[i] = false; 2522 sdata->rc_has_vht_mcs_mask[i] = false; 2523 if (!sband) 2524 continue; 2525 2526 for (j = 0; j < IEEE80211_HT_MCS_MASK_LEN; j++) { 2527 if (~sdata->rc_rateidx_mcs_mask[i][j]) { 2528 sdata->rc_has_mcs_mask[i] = true; 2529 break; 2530 } 2531 } 2532 2533 for (j = 0; j < NL80211_VHT_NSS_MAX; j++) { 2534 if (~sdata->rc_rateidx_vht_mcs_mask[i][j]) { 2535 sdata->rc_has_vht_mcs_mask[i] = true; 2536 break; 2537 } 2538 } 2539 } 2540 2541 return 0; 2542 } 2543 2544 static int ieee80211_start_radar_detection(struct wiphy *wiphy, 2545 struct net_device *dev, 2546 struct cfg80211_chan_def *chandef, 2547 u32 cac_time_ms) 2548 { 2549 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 2550 struct ieee80211_local *local = sdata->local; 2551 int err; 2552 2553 mutex_lock(&local->mtx); 2554 if (!list_empty(&local->roc_list) || local->scanning) { 2555 err = -EBUSY; 2556 goto out_unlock; 2557 } 2558 2559 /* whatever, but channel contexts should not complain about that one */ 2560 sdata->smps_mode = IEEE80211_SMPS_OFF; 2561 sdata->needed_rx_chains = local->rx_chains; 2562 2563 err = ieee80211_vif_use_channel(sdata, chandef, 2564 IEEE80211_CHANCTX_SHARED); 2565 if (err) 2566 goto out_unlock; 2567 2568 ieee80211_queue_delayed_work(&sdata->local->hw, 2569 &sdata->dfs_cac_timer_work, 2570 msecs_to_jiffies(cac_time_ms)); 2571 2572 out_unlock: 2573 mutex_unlock(&local->mtx); 2574 return err; 2575 } 2576 2577 static struct cfg80211_beacon_data * 2578 cfg80211_beacon_dup(struct cfg80211_beacon_data *beacon) 2579 { 2580 struct cfg80211_beacon_data *new_beacon; 2581 u8 *pos; 2582 int len; 2583 2584 len = beacon->head_len + beacon->tail_len + beacon->beacon_ies_len + 2585 beacon->proberesp_ies_len + beacon->assocresp_ies_len + 2586 beacon->probe_resp_len; 2587 2588 new_beacon = kzalloc(sizeof(*new_beacon) + len, GFP_KERNEL); 2589 if (!new_beacon) 2590 return NULL; 2591 2592 pos = (u8 *)(new_beacon + 1); 2593 if (beacon->head_len) { 2594 new_beacon->head_len = beacon->head_len; 2595 new_beacon->head = pos; 2596 memcpy(pos, beacon->head, beacon->head_len); 2597 pos += beacon->head_len; 2598 } 2599 if (beacon->tail_len) { 2600 new_beacon->tail_len = beacon->tail_len; 2601 new_beacon->tail = pos; 2602 memcpy(pos, beacon->tail, beacon->tail_len); 2603 pos += beacon->tail_len; 2604 } 2605 if (beacon->beacon_ies_len) { 2606 new_beacon->beacon_ies_len = beacon->beacon_ies_len; 2607 new_beacon->beacon_ies = pos; 2608 memcpy(pos, beacon->beacon_ies, beacon->beacon_ies_len); 2609 pos += beacon->beacon_ies_len; 2610 } 2611 if (beacon->proberesp_ies_len) { 2612 new_beacon->proberesp_ies_len = beacon->proberesp_ies_len; 2613 new_beacon->proberesp_ies = pos; 2614 memcpy(pos, beacon->proberesp_ies, beacon->proberesp_ies_len); 2615 pos += beacon->proberesp_ies_len; 2616 } 2617 if (beacon->assocresp_ies_len) { 2618 new_beacon->assocresp_ies_len = beacon->assocresp_ies_len; 2619 new_beacon->assocresp_ies = pos; 2620 memcpy(pos, beacon->assocresp_ies, beacon->assocresp_ies_len); 2621 pos += beacon->assocresp_ies_len; 2622 } 2623 if (beacon->probe_resp_len) { 2624 new_beacon->probe_resp_len = beacon->probe_resp_len; 2625 beacon->probe_resp = pos; 2626 memcpy(pos, beacon->probe_resp, beacon->probe_resp_len); 2627 pos += beacon->probe_resp_len; 2628 } 2629 2630 return new_beacon; 2631 } 2632 2633 void ieee80211_csa_finish(struct ieee80211_vif *vif) 2634 { 2635 struct ieee80211_sub_if_data *sdata = vif_to_sdata(vif); 2636 2637 ieee80211_queue_work(&sdata->local->hw, 2638 &sdata->csa_finalize_work); 2639 } 2640 EXPORT_SYMBOL(ieee80211_csa_finish); 2641 2642 static int ieee80211_set_after_csa_beacon(struct ieee80211_sub_if_data *sdata, 2643 u32 *changed) 2644 { 2645 int err; 2646 2647 switch (sdata->vif.type) { 2648 case NL80211_IFTYPE_AP: 2649 err = ieee80211_assign_beacon(sdata, sdata->u.ap.next_beacon, 2650 NULL); 2651 kfree(sdata->u.ap.next_beacon); 2652 sdata->u.ap.next_beacon = NULL; 2653 2654 if (err < 0) 2655 return err; 2656 *changed |= err; 2657 break; 2658 case NL80211_IFTYPE_ADHOC: 2659 err = ieee80211_ibss_finish_csa(sdata); 2660 if (err < 0) 2661 return err; 2662 *changed |= err; 2663 break; 2664 #ifdef CONFIG_MAC80211_MESH 2665 case NL80211_IFTYPE_MESH_POINT: 2666 err = ieee80211_mesh_finish_csa(sdata); 2667 if (err < 0) 2668 return err; 2669 *changed |= err; 2670 break; 2671 #endif 2672 default: 2673 WARN_ON(1); 2674 return -EINVAL; 2675 } 2676 2677 return 0; 2678 } 2679 2680 static int __ieee80211_csa_finalize(struct ieee80211_sub_if_data *sdata) 2681 { 2682 struct ieee80211_local *local = sdata->local; 2683 u32 changed = 0; 2684 int err; 2685 2686 sdata_assert_lock(sdata); 2687 lockdep_assert_held(&local->mtx); 2688 lockdep_assert_held(&local->chanctx_mtx); 2689 2690 /* 2691 * using reservation isn't immediate as it may be deferred until later 2692 * with multi-vif. once reservation is complete it will re-schedule the 2693 * work with no reserved_chanctx so verify chandef to check if it 2694 * completed successfully 2695 */ 2696 2697 if (sdata->reserved_chanctx) { 2698 /* 2699 * with multi-vif csa driver may call ieee80211_csa_finish() 2700 * many times while waiting for other interfaces to use their 2701 * reservations 2702 */ 2703 if (sdata->reserved_ready) 2704 return 0; 2705 2706 return ieee80211_vif_use_reserved_context(sdata); 2707 } 2708 2709 if (!cfg80211_chandef_identical(&sdata->vif.bss_conf.chandef, 2710 &sdata->csa_chandef)) 2711 return -EINVAL; 2712 2713 sdata->vif.csa_active = false; 2714 2715 err = ieee80211_set_after_csa_beacon(sdata, &changed); 2716 if (err) 2717 return err; 2718 2719 ieee80211_bss_info_change_notify(sdata, changed); 2720 2721 if (sdata->csa_block_tx) { 2722 ieee80211_wake_vif_queues(local, sdata, 2723 IEEE80211_QUEUE_STOP_REASON_CSA); 2724 sdata->csa_block_tx = false; 2725 } 2726 2727 err = drv_post_channel_switch(sdata); 2728 if (err) 2729 return err; 2730 2731 cfg80211_ch_switch_notify(sdata->dev, &sdata->csa_chandef); 2732 2733 return 0; 2734 } 2735 2736 static void ieee80211_csa_finalize(struct ieee80211_sub_if_data *sdata) 2737 { 2738 if (__ieee80211_csa_finalize(sdata)) { 2739 sdata_info(sdata, "failed to finalize CSA, disconnecting\n"); 2740 cfg80211_stop_iface(sdata->local->hw.wiphy, &sdata->wdev, 2741 GFP_KERNEL); 2742 } 2743 } 2744 2745 void ieee80211_csa_finalize_work(struct work_struct *work) 2746 { 2747 struct ieee80211_sub_if_data *sdata = 2748 container_of(work, struct ieee80211_sub_if_data, 2749 csa_finalize_work); 2750 struct ieee80211_local *local = sdata->local; 2751 2752 sdata_lock(sdata); 2753 mutex_lock(&local->mtx); 2754 mutex_lock(&local->chanctx_mtx); 2755 2756 /* AP might have been stopped while waiting for the lock. */ 2757 if (!sdata->vif.csa_active) 2758 goto unlock; 2759 2760 if (!ieee80211_sdata_running(sdata)) 2761 goto unlock; 2762 2763 ieee80211_csa_finalize(sdata); 2764 2765 unlock: 2766 mutex_unlock(&local->chanctx_mtx); 2767 mutex_unlock(&local->mtx); 2768 sdata_unlock(sdata); 2769 } 2770 2771 static int ieee80211_set_csa_beacon(struct ieee80211_sub_if_data *sdata, 2772 struct cfg80211_csa_settings *params, 2773 u32 *changed) 2774 { 2775 struct ieee80211_csa_settings csa = {}; 2776 int err; 2777 2778 switch (sdata->vif.type) { 2779 case NL80211_IFTYPE_AP: 2780 sdata->u.ap.next_beacon = 2781 cfg80211_beacon_dup(¶ms->beacon_after); 2782 if (!sdata->u.ap.next_beacon) 2783 return -ENOMEM; 2784 2785 /* 2786 * With a count of 0, we don't have to wait for any 2787 * TBTT before switching, so complete the CSA 2788 * immediately. In theory, with a count == 1 we 2789 * should delay the switch until just before the next 2790 * TBTT, but that would complicate things so we switch 2791 * immediately too. If we would delay the switch 2792 * until the next TBTT, we would have to set the probe 2793 * response here. 2794 * 2795 * TODO: A channel switch with count <= 1 without 2796 * sending a CSA action frame is kind of useless, 2797 * because the clients won't know we're changing 2798 * channels. The action frame must be implemented 2799 * either here or in the userspace. 2800 */ 2801 if (params->count <= 1) 2802 break; 2803 2804 if ((params->n_counter_offsets_beacon > 2805 IEEE80211_MAX_CSA_COUNTERS_NUM) || 2806 (params->n_counter_offsets_presp > 2807 IEEE80211_MAX_CSA_COUNTERS_NUM)) 2808 return -EINVAL; 2809 2810 csa.counter_offsets_beacon = params->counter_offsets_beacon; 2811 csa.counter_offsets_presp = params->counter_offsets_presp; 2812 csa.n_counter_offsets_beacon = params->n_counter_offsets_beacon; 2813 csa.n_counter_offsets_presp = params->n_counter_offsets_presp; 2814 csa.count = params->count; 2815 2816 err = ieee80211_assign_beacon(sdata, ¶ms->beacon_csa, &csa); 2817 if (err < 0) { 2818 kfree(sdata->u.ap.next_beacon); 2819 return err; 2820 } 2821 *changed |= err; 2822 2823 break; 2824 case NL80211_IFTYPE_ADHOC: 2825 if (!sdata->vif.bss_conf.ibss_joined) 2826 return -EINVAL; 2827 2828 if (params->chandef.width != sdata->u.ibss.chandef.width) 2829 return -EINVAL; 2830 2831 switch (params->chandef.width) { 2832 case NL80211_CHAN_WIDTH_40: 2833 if (cfg80211_get_chandef_type(¶ms->chandef) != 2834 cfg80211_get_chandef_type(&sdata->u.ibss.chandef)) 2835 return -EINVAL; 2836 case NL80211_CHAN_WIDTH_5: 2837 case NL80211_CHAN_WIDTH_10: 2838 case NL80211_CHAN_WIDTH_20_NOHT: 2839 case NL80211_CHAN_WIDTH_20: 2840 break; 2841 default: 2842 return -EINVAL; 2843 } 2844 2845 /* changes into another band are not supported */ 2846 if (sdata->u.ibss.chandef.chan->band != 2847 params->chandef.chan->band) 2848 return -EINVAL; 2849 2850 /* see comments in the NL80211_IFTYPE_AP block */ 2851 if (params->count > 1) { 2852 err = ieee80211_ibss_csa_beacon(sdata, params); 2853 if (err < 0) 2854 return err; 2855 *changed |= err; 2856 } 2857 2858 ieee80211_send_action_csa(sdata, params); 2859 2860 break; 2861 #ifdef CONFIG_MAC80211_MESH 2862 case NL80211_IFTYPE_MESH_POINT: { 2863 struct ieee80211_if_mesh *ifmsh = &sdata->u.mesh; 2864 2865 if (params->chandef.width != sdata->vif.bss_conf.chandef.width) 2866 return -EINVAL; 2867 2868 /* changes into another band are not supported */ 2869 if (sdata->vif.bss_conf.chandef.chan->band != 2870 params->chandef.chan->band) 2871 return -EINVAL; 2872 2873 if (ifmsh->csa_role == IEEE80211_MESH_CSA_ROLE_NONE) { 2874 ifmsh->csa_role = IEEE80211_MESH_CSA_ROLE_INIT; 2875 if (!ifmsh->pre_value) 2876 ifmsh->pre_value = 1; 2877 else 2878 ifmsh->pre_value++; 2879 } 2880 2881 /* see comments in the NL80211_IFTYPE_AP block */ 2882 if (params->count > 1) { 2883 err = ieee80211_mesh_csa_beacon(sdata, params); 2884 if (err < 0) { 2885 ifmsh->csa_role = IEEE80211_MESH_CSA_ROLE_NONE; 2886 return err; 2887 } 2888 *changed |= err; 2889 } 2890 2891 if (ifmsh->csa_role == IEEE80211_MESH_CSA_ROLE_INIT) 2892 ieee80211_send_action_csa(sdata, params); 2893 2894 break; 2895 } 2896 #endif 2897 default: 2898 return -EOPNOTSUPP; 2899 } 2900 2901 return 0; 2902 } 2903 2904 static int 2905 __ieee80211_channel_switch(struct wiphy *wiphy, struct net_device *dev, 2906 struct cfg80211_csa_settings *params) 2907 { 2908 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 2909 struct ieee80211_local *local = sdata->local; 2910 struct ieee80211_channel_switch ch_switch; 2911 struct ieee80211_chanctx_conf *conf; 2912 struct ieee80211_chanctx *chanctx; 2913 u32 changed = 0; 2914 int err; 2915 2916 sdata_assert_lock(sdata); 2917 lockdep_assert_held(&local->mtx); 2918 2919 if (!list_empty(&local->roc_list) || local->scanning) 2920 return -EBUSY; 2921 2922 if (sdata->wdev.cac_started) 2923 return -EBUSY; 2924 2925 if (cfg80211_chandef_identical(¶ms->chandef, 2926 &sdata->vif.bss_conf.chandef)) 2927 return -EINVAL; 2928 2929 /* don't allow another channel switch if one is already active. */ 2930 if (sdata->vif.csa_active) 2931 return -EBUSY; 2932 2933 mutex_lock(&local->chanctx_mtx); 2934 conf = rcu_dereference_protected(sdata->vif.chanctx_conf, 2935 lockdep_is_held(&local->chanctx_mtx)); 2936 if (!conf) { 2937 err = -EBUSY; 2938 goto out; 2939 } 2940 2941 chanctx = container_of(conf, struct ieee80211_chanctx, conf); 2942 if (!chanctx) { 2943 err = -EBUSY; 2944 goto out; 2945 } 2946 2947 ch_switch.timestamp = 0; 2948 ch_switch.device_timestamp = 0; 2949 ch_switch.block_tx = params->block_tx; 2950 ch_switch.chandef = params->chandef; 2951 ch_switch.count = params->count; 2952 2953 err = drv_pre_channel_switch(sdata, &ch_switch); 2954 if (err) 2955 goto out; 2956 2957 err = ieee80211_vif_reserve_chanctx(sdata, ¶ms->chandef, 2958 chanctx->mode, 2959 params->radar_required); 2960 if (err) 2961 goto out; 2962 2963 /* if reservation is invalid then this will fail */ 2964 err = ieee80211_check_combinations(sdata, NULL, chanctx->mode, 0); 2965 if (err) { 2966 ieee80211_vif_unreserve_chanctx(sdata); 2967 goto out; 2968 } 2969 2970 err = ieee80211_set_csa_beacon(sdata, params, &changed); 2971 if (err) { 2972 ieee80211_vif_unreserve_chanctx(sdata); 2973 goto out; 2974 } 2975 2976 sdata->csa_chandef = params->chandef; 2977 sdata->csa_block_tx = params->block_tx; 2978 sdata->vif.csa_active = true; 2979 2980 if (sdata->csa_block_tx) 2981 ieee80211_stop_vif_queues(local, sdata, 2982 IEEE80211_QUEUE_STOP_REASON_CSA); 2983 2984 cfg80211_ch_switch_started_notify(sdata->dev, &sdata->csa_chandef, 2985 params->count); 2986 2987 if (changed) { 2988 ieee80211_bss_info_change_notify(sdata, changed); 2989 drv_channel_switch_beacon(sdata, ¶ms->chandef); 2990 } else { 2991 /* if the beacon didn't change, we can finalize immediately */ 2992 ieee80211_csa_finalize(sdata); 2993 } 2994 2995 out: 2996 mutex_unlock(&local->chanctx_mtx); 2997 return err; 2998 } 2999 3000 int ieee80211_channel_switch(struct wiphy *wiphy, struct net_device *dev, 3001 struct cfg80211_csa_settings *params) 3002 { 3003 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 3004 struct ieee80211_local *local = sdata->local; 3005 int err; 3006 3007 mutex_lock(&local->mtx); 3008 err = __ieee80211_channel_switch(wiphy, dev, params); 3009 mutex_unlock(&local->mtx); 3010 3011 return err; 3012 } 3013 3014 u64 ieee80211_mgmt_tx_cookie(struct ieee80211_local *local) 3015 { 3016 lockdep_assert_held(&local->mtx); 3017 3018 local->roc_cookie_counter++; 3019 3020 /* wow, you wrapped 64 bits ... more likely a bug */ 3021 if (WARN_ON(local->roc_cookie_counter == 0)) 3022 local->roc_cookie_counter++; 3023 3024 return local->roc_cookie_counter; 3025 } 3026 3027 int ieee80211_attach_ack_skb(struct ieee80211_local *local, struct sk_buff *skb, 3028 u64 *cookie, gfp_t gfp) 3029 { 3030 unsigned long spin_flags; 3031 struct sk_buff *ack_skb; 3032 int id; 3033 3034 ack_skb = skb_copy(skb, gfp); 3035 if (!ack_skb) 3036 return -ENOMEM; 3037 3038 spin_lock_irqsave(&local->ack_status_lock, spin_flags); 3039 id = idr_alloc(&local->ack_status_frames, ack_skb, 3040 1, 0x10000, GFP_ATOMIC); 3041 spin_unlock_irqrestore(&local->ack_status_lock, spin_flags); 3042 3043 if (id < 0) { 3044 kfree_skb(ack_skb); 3045 return -ENOMEM; 3046 } 3047 3048 IEEE80211_SKB_CB(skb)->ack_frame_id = id; 3049 3050 *cookie = ieee80211_mgmt_tx_cookie(local); 3051 IEEE80211_SKB_CB(ack_skb)->ack.cookie = *cookie; 3052 3053 return 0; 3054 } 3055 3056 static void ieee80211_mgmt_frame_register(struct wiphy *wiphy, 3057 struct wireless_dev *wdev, 3058 u16 frame_type, bool reg) 3059 { 3060 struct ieee80211_local *local = wiphy_priv(wiphy); 3061 struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev); 3062 3063 switch (frame_type) { 3064 case IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_PROBE_REQ: 3065 if (reg) { 3066 local->probe_req_reg++; 3067 sdata->vif.probe_req_reg++; 3068 } else { 3069 if (local->probe_req_reg) 3070 local->probe_req_reg--; 3071 3072 if (sdata->vif.probe_req_reg) 3073 sdata->vif.probe_req_reg--; 3074 } 3075 3076 if (!local->open_count) 3077 break; 3078 3079 if (sdata->vif.probe_req_reg == 1) 3080 drv_config_iface_filter(local, sdata, FIF_PROBE_REQ, 3081 FIF_PROBE_REQ); 3082 else if (sdata->vif.probe_req_reg == 0) 3083 drv_config_iface_filter(local, sdata, 0, 3084 FIF_PROBE_REQ); 3085 3086 ieee80211_configure_filter(local); 3087 break; 3088 default: 3089 break; 3090 } 3091 } 3092 3093 static int ieee80211_set_antenna(struct wiphy *wiphy, u32 tx_ant, u32 rx_ant) 3094 { 3095 struct ieee80211_local *local = wiphy_priv(wiphy); 3096 3097 if (local->started) 3098 return -EOPNOTSUPP; 3099 3100 return drv_set_antenna(local, tx_ant, rx_ant); 3101 } 3102 3103 static int ieee80211_get_antenna(struct wiphy *wiphy, u32 *tx_ant, u32 *rx_ant) 3104 { 3105 struct ieee80211_local *local = wiphy_priv(wiphy); 3106 3107 return drv_get_antenna(local, tx_ant, rx_ant); 3108 } 3109 3110 static int ieee80211_set_rekey_data(struct wiphy *wiphy, 3111 struct net_device *dev, 3112 struct cfg80211_gtk_rekey_data *data) 3113 { 3114 struct ieee80211_local *local = wiphy_priv(wiphy); 3115 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 3116 3117 if (!local->ops->set_rekey_data) 3118 return -EOPNOTSUPP; 3119 3120 drv_set_rekey_data(local, sdata, data); 3121 3122 return 0; 3123 } 3124 3125 static int ieee80211_probe_client(struct wiphy *wiphy, struct net_device *dev, 3126 const u8 *peer, u64 *cookie) 3127 { 3128 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 3129 struct ieee80211_local *local = sdata->local; 3130 struct ieee80211_qos_hdr *nullfunc; 3131 struct sk_buff *skb; 3132 int size = sizeof(*nullfunc); 3133 __le16 fc; 3134 bool qos; 3135 struct ieee80211_tx_info *info; 3136 struct sta_info *sta; 3137 struct ieee80211_chanctx_conf *chanctx_conf; 3138 enum nl80211_band band; 3139 int ret; 3140 3141 /* the lock is needed to assign the cookie later */ 3142 mutex_lock(&local->mtx); 3143 3144 rcu_read_lock(); 3145 chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf); 3146 if (WARN_ON(!chanctx_conf)) { 3147 ret = -EINVAL; 3148 goto unlock; 3149 } 3150 band = chanctx_conf->def.chan->band; 3151 sta = sta_info_get_bss(sdata, peer); 3152 if (sta) { 3153 qos = sta->sta.wme; 3154 } else { 3155 ret = -ENOLINK; 3156 goto unlock; 3157 } 3158 3159 if (qos) { 3160 fc = cpu_to_le16(IEEE80211_FTYPE_DATA | 3161 IEEE80211_STYPE_QOS_NULLFUNC | 3162 IEEE80211_FCTL_FROMDS); 3163 } else { 3164 size -= 2; 3165 fc = cpu_to_le16(IEEE80211_FTYPE_DATA | 3166 IEEE80211_STYPE_NULLFUNC | 3167 IEEE80211_FCTL_FROMDS); 3168 } 3169 3170 skb = dev_alloc_skb(local->hw.extra_tx_headroom + size); 3171 if (!skb) { 3172 ret = -ENOMEM; 3173 goto unlock; 3174 } 3175 3176 skb->dev = dev; 3177 3178 skb_reserve(skb, local->hw.extra_tx_headroom); 3179 3180 nullfunc = (void *) skb_put(skb, size); 3181 nullfunc->frame_control = fc; 3182 nullfunc->duration_id = 0; 3183 memcpy(nullfunc->addr1, sta->sta.addr, ETH_ALEN); 3184 memcpy(nullfunc->addr2, sdata->vif.addr, ETH_ALEN); 3185 memcpy(nullfunc->addr3, sdata->vif.addr, ETH_ALEN); 3186 nullfunc->seq_ctrl = 0; 3187 3188 info = IEEE80211_SKB_CB(skb); 3189 3190 info->flags |= IEEE80211_TX_CTL_REQ_TX_STATUS | 3191 IEEE80211_TX_INTFL_NL80211_FRAME_TX; 3192 info->band = band; 3193 3194 skb_set_queue_mapping(skb, IEEE80211_AC_VO); 3195 skb->priority = 7; 3196 if (qos) 3197 nullfunc->qos_ctrl = cpu_to_le16(7); 3198 3199 ret = ieee80211_attach_ack_skb(local, skb, cookie, GFP_ATOMIC); 3200 if (ret) { 3201 kfree_skb(skb); 3202 goto unlock; 3203 } 3204 3205 local_bh_disable(); 3206 ieee80211_xmit(sdata, sta, skb); 3207 local_bh_enable(); 3208 3209 ret = 0; 3210 unlock: 3211 rcu_read_unlock(); 3212 mutex_unlock(&local->mtx); 3213 3214 return ret; 3215 } 3216 3217 static int ieee80211_cfg_get_channel(struct wiphy *wiphy, 3218 struct wireless_dev *wdev, 3219 struct cfg80211_chan_def *chandef) 3220 { 3221 struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev); 3222 struct ieee80211_local *local = wiphy_priv(wiphy); 3223 struct ieee80211_chanctx_conf *chanctx_conf; 3224 int ret = -ENODATA; 3225 3226 rcu_read_lock(); 3227 chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf); 3228 if (chanctx_conf) { 3229 *chandef = sdata->vif.bss_conf.chandef; 3230 ret = 0; 3231 } else if (local->open_count > 0 && 3232 local->open_count == local->monitors && 3233 sdata->vif.type == NL80211_IFTYPE_MONITOR) { 3234 if (local->use_chanctx) 3235 *chandef = local->monitor_chandef; 3236 else 3237 *chandef = local->_oper_chandef; 3238 ret = 0; 3239 } 3240 rcu_read_unlock(); 3241 3242 return ret; 3243 } 3244 3245 #ifdef CONFIG_PM 3246 static void ieee80211_set_wakeup(struct wiphy *wiphy, bool enabled) 3247 { 3248 drv_set_wakeup(wiphy_priv(wiphy), enabled); 3249 } 3250 #endif 3251 3252 static int ieee80211_set_qos_map(struct wiphy *wiphy, 3253 struct net_device *dev, 3254 struct cfg80211_qos_map *qos_map) 3255 { 3256 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 3257 struct mac80211_qos_map *new_qos_map, *old_qos_map; 3258 3259 if (qos_map) { 3260 new_qos_map = kzalloc(sizeof(*new_qos_map), GFP_KERNEL); 3261 if (!new_qos_map) 3262 return -ENOMEM; 3263 memcpy(&new_qos_map->qos_map, qos_map, sizeof(*qos_map)); 3264 } else { 3265 /* A NULL qos_map was passed to disable QoS mapping */ 3266 new_qos_map = NULL; 3267 } 3268 3269 old_qos_map = sdata_dereference(sdata->qos_map, sdata); 3270 rcu_assign_pointer(sdata->qos_map, new_qos_map); 3271 if (old_qos_map) 3272 kfree_rcu(old_qos_map, rcu_head); 3273 3274 return 0; 3275 } 3276 3277 static int ieee80211_set_ap_chanwidth(struct wiphy *wiphy, 3278 struct net_device *dev, 3279 struct cfg80211_chan_def *chandef) 3280 { 3281 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 3282 int ret; 3283 u32 changed = 0; 3284 3285 ret = ieee80211_vif_change_bandwidth(sdata, chandef, &changed); 3286 if (ret == 0) 3287 ieee80211_bss_info_change_notify(sdata, changed); 3288 3289 return ret; 3290 } 3291 3292 static int ieee80211_add_tx_ts(struct wiphy *wiphy, struct net_device *dev, 3293 u8 tsid, const u8 *peer, u8 up, 3294 u16 admitted_time) 3295 { 3296 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 3297 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; 3298 int ac = ieee802_1d_to_ac[up]; 3299 3300 if (sdata->vif.type != NL80211_IFTYPE_STATION) 3301 return -EOPNOTSUPP; 3302 3303 if (!(sdata->wmm_acm & BIT(up))) 3304 return -EINVAL; 3305 3306 if (ifmgd->tx_tspec[ac].admitted_time) 3307 return -EBUSY; 3308 3309 if (admitted_time) { 3310 ifmgd->tx_tspec[ac].admitted_time = 32 * admitted_time; 3311 ifmgd->tx_tspec[ac].tsid = tsid; 3312 ifmgd->tx_tspec[ac].up = up; 3313 } 3314 3315 return 0; 3316 } 3317 3318 static int ieee80211_del_tx_ts(struct wiphy *wiphy, struct net_device *dev, 3319 u8 tsid, const u8 *peer) 3320 { 3321 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 3322 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; 3323 struct ieee80211_local *local = wiphy_priv(wiphy); 3324 int ac; 3325 3326 for (ac = 0; ac < IEEE80211_NUM_ACS; ac++) { 3327 struct ieee80211_sta_tx_tspec *tx_tspec = &ifmgd->tx_tspec[ac]; 3328 3329 /* skip unused entries */ 3330 if (!tx_tspec->admitted_time) 3331 continue; 3332 3333 if (tx_tspec->tsid != tsid) 3334 continue; 3335 3336 /* due to this new packets will be reassigned to non-ACM ACs */ 3337 tx_tspec->up = -1; 3338 3339 /* Make sure that all packets have been sent to avoid to 3340 * restore the QoS params on packets that are still on the 3341 * queues. 3342 */ 3343 synchronize_net(); 3344 ieee80211_flush_queues(local, sdata, false); 3345 3346 /* restore the normal QoS parameters 3347 * (unconditionally to avoid races) 3348 */ 3349 tx_tspec->action = TX_TSPEC_ACTION_STOP_DOWNGRADE; 3350 tx_tspec->downgraded = false; 3351 ieee80211_sta_handle_tspec_ac_params(sdata); 3352 3353 /* finally clear all the data */ 3354 memset(tx_tspec, 0, sizeof(*tx_tspec)); 3355 3356 return 0; 3357 } 3358 3359 return -ENOENT; 3360 } 3361 3362 const struct cfg80211_ops mac80211_config_ops = { 3363 .add_virtual_intf = ieee80211_add_iface, 3364 .del_virtual_intf = ieee80211_del_iface, 3365 .change_virtual_intf = ieee80211_change_iface, 3366 .start_p2p_device = ieee80211_start_p2p_device, 3367 .stop_p2p_device = ieee80211_stop_p2p_device, 3368 .add_key = ieee80211_add_key, 3369 .del_key = ieee80211_del_key, 3370 .get_key = ieee80211_get_key, 3371 .set_default_key = ieee80211_config_default_key, 3372 .set_default_mgmt_key = ieee80211_config_default_mgmt_key, 3373 .start_ap = ieee80211_start_ap, 3374 .change_beacon = ieee80211_change_beacon, 3375 .stop_ap = ieee80211_stop_ap, 3376 .add_station = ieee80211_add_station, 3377 .del_station = ieee80211_del_station, 3378 .change_station = ieee80211_change_station, 3379 .get_station = ieee80211_get_station, 3380 .dump_station = ieee80211_dump_station, 3381 .dump_survey = ieee80211_dump_survey, 3382 #ifdef CONFIG_MAC80211_MESH 3383 .add_mpath = ieee80211_add_mpath, 3384 .del_mpath = ieee80211_del_mpath, 3385 .change_mpath = ieee80211_change_mpath, 3386 .get_mpath = ieee80211_get_mpath, 3387 .dump_mpath = ieee80211_dump_mpath, 3388 .get_mpp = ieee80211_get_mpp, 3389 .dump_mpp = ieee80211_dump_mpp, 3390 .update_mesh_config = ieee80211_update_mesh_config, 3391 .get_mesh_config = ieee80211_get_mesh_config, 3392 .join_mesh = ieee80211_join_mesh, 3393 .leave_mesh = ieee80211_leave_mesh, 3394 #endif 3395 .join_ocb = ieee80211_join_ocb, 3396 .leave_ocb = ieee80211_leave_ocb, 3397 .change_bss = ieee80211_change_bss, 3398 .set_txq_params = ieee80211_set_txq_params, 3399 .set_monitor_channel = ieee80211_set_monitor_channel, 3400 .suspend = ieee80211_suspend, 3401 .resume = ieee80211_resume, 3402 .scan = ieee80211_scan, 3403 .abort_scan = ieee80211_abort_scan, 3404 .sched_scan_start = ieee80211_sched_scan_start, 3405 .sched_scan_stop = ieee80211_sched_scan_stop, 3406 .auth = ieee80211_auth, 3407 .assoc = ieee80211_assoc, 3408 .deauth = ieee80211_deauth, 3409 .disassoc = ieee80211_disassoc, 3410 .join_ibss = ieee80211_join_ibss, 3411 .leave_ibss = ieee80211_leave_ibss, 3412 .set_mcast_rate = ieee80211_set_mcast_rate, 3413 .set_wiphy_params = ieee80211_set_wiphy_params, 3414 .set_tx_power = ieee80211_set_tx_power, 3415 .get_tx_power = ieee80211_get_tx_power, 3416 .set_wds_peer = ieee80211_set_wds_peer, 3417 .rfkill_poll = ieee80211_rfkill_poll, 3418 CFG80211_TESTMODE_CMD(ieee80211_testmode_cmd) 3419 CFG80211_TESTMODE_DUMP(ieee80211_testmode_dump) 3420 .set_power_mgmt = ieee80211_set_power_mgmt, 3421 .set_bitrate_mask = ieee80211_set_bitrate_mask, 3422 .remain_on_channel = ieee80211_remain_on_channel, 3423 .cancel_remain_on_channel = ieee80211_cancel_remain_on_channel, 3424 .mgmt_tx = ieee80211_mgmt_tx, 3425 .mgmt_tx_cancel_wait = ieee80211_mgmt_tx_cancel_wait, 3426 .set_cqm_rssi_config = ieee80211_set_cqm_rssi_config, 3427 .mgmt_frame_register = ieee80211_mgmt_frame_register, 3428 .set_antenna = ieee80211_set_antenna, 3429 .get_antenna = ieee80211_get_antenna, 3430 .set_rekey_data = ieee80211_set_rekey_data, 3431 .tdls_oper = ieee80211_tdls_oper, 3432 .tdls_mgmt = ieee80211_tdls_mgmt, 3433 .tdls_channel_switch = ieee80211_tdls_channel_switch, 3434 .tdls_cancel_channel_switch = ieee80211_tdls_cancel_channel_switch, 3435 .probe_client = ieee80211_probe_client, 3436 .set_noack_map = ieee80211_set_noack_map, 3437 #ifdef CONFIG_PM 3438 .set_wakeup = ieee80211_set_wakeup, 3439 #endif 3440 .get_channel = ieee80211_cfg_get_channel, 3441 .start_radar_detection = ieee80211_start_radar_detection, 3442 .channel_switch = ieee80211_channel_switch, 3443 .set_qos_map = ieee80211_set_qos_map, 3444 .set_ap_chanwidth = ieee80211_set_ap_chanwidth, 3445 .add_tx_ts = ieee80211_add_tx_ts, 3446 .del_tx_ts = ieee80211_del_tx_ts, 3447 }; 3448