1 // SPDX-License-Identifier: GPL-2.0-only 2 /* 3 * mac80211 configuration hooks for cfg80211 4 * 5 * Copyright 2006-2010 Johannes Berg <johannes@sipsolutions.net> 6 * Copyright 2013-2015 Intel Mobile Communications GmbH 7 * Copyright (C) 2015-2017 Intel Deutschland GmbH 8 * Copyright (C) 2018-2021 Intel Corporation 9 */ 10 11 #include <linux/ieee80211.h> 12 #include <linux/nl80211.h> 13 #include <linux/rtnetlink.h> 14 #include <linux/slab.h> 15 #include <net/net_namespace.h> 16 #include <linux/rcupdate.h> 17 #include <linux/fips.h> 18 #include <linux/if_ether.h> 19 #include <net/cfg80211.h> 20 #include "ieee80211_i.h" 21 #include "driver-ops.h" 22 #include "rate.h" 23 #include "mesh.h" 24 #include "wme.h" 25 26 static void ieee80211_set_mu_mimo_follow(struct ieee80211_sub_if_data *sdata, 27 struct vif_params *params) 28 { 29 bool mu_mimo_groups = false; 30 bool mu_mimo_follow = false; 31 32 if (params->vht_mumimo_groups) { 33 u64 membership; 34 35 BUILD_BUG_ON(sizeof(membership) != WLAN_MEMBERSHIP_LEN); 36 37 memcpy(sdata->vif.bss_conf.mu_group.membership, 38 params->vht_mumimo_groups, WLAN_MEMBERSHIP_LEN); 39 memcpy(sdata->vif.bss_conf.mu_group.position, 40 params->vht_mumimo_groups + WLAN_MEMBERSHIP_LEN, 41 WLAN_USER_POSITION_LEN); 42 ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_MU_GROUPS); 43 /* don't care about endianness - just check for 0 */ 44 memcpy(&membership, params->vht_mumimo_groups, 45 WLAN_MEMBERSHIP_LEN); 46 mu_mimo_groups = membership != 0; 47 } 48 49 if (params->vht_mumimo_follow_addr) { 50 mu_mimo_follow = 51 is_valid_ether_addr(params->vht_mumimo_follow_addr); 52 ether_addr_copy(sdata->u.mntr.mu_follow_addr, 53 params->vht_mumimo_follow_addr); 54 } 55 56 sdata->vif.mu_mimo_owner = mu_mimo_groups || mu_mimo_follow; 57 } 58 59 static int ieee80211_set_mon_options(struct ieee80211_sub_if_data *sdata, 60 struct vif_params *params) 61 { 62 struct ieee80211_local *local = sdata->local; 63 struct ieee80211_sub_if_data *monitor_sdata; 64 65 /* check flags first */ 66 if (params->flags && ieee80211_sdata_running(sdata)) { 67 u32 mask = MONITOR_FLAG_COOK_FRAMES | MONITOR_FLAG_ACTIVE; 68 69 /* 70 * Prohibit MONITOR_FLAG_COOK_FRAMES and 71 * MONITOR_FLAG_ACTIVE to be changed while the 72 * interface is up. 73 * Else we would need to add a lot of cruft 74 * to update everything: 75 * cooked_mntrs, monitor and all fif_* counters 76 * reconfigure hardware 77 */ 78 if ((params->flags & mask) != (sdata->u.mntr.flags & mask)) 79 return -EBUSY; 80 } 81 82 /* also validate MU-MIMO change */ 83 monitor_sdata = wiphy_dereference(local->hw.wiphy, 84 local->monitor_sdata); 85 86 if (!monitor_sdata && 87 (params->vht_mumimo_groups || params->vht_mumimo_follow_addr)) 88 return -EOPNOTSUPP; 89 90 /* apply all changes now - no failures allowed */ 91 92 if (monitor_sdata) 93 ieee80211_set_mu_mimo_follow(monitor_sdata, params); 94 95 if (params->flags) { 96 if (ieee80211_sdata_running(sdata)) { 97 ieee80211_adjust_monitor_flags(sdata, -1); 98 sdata->u.mntr.flags = params->flags; 99 ieee80211_adjust_monitor_flags(sdata, 1); 100 101 ieee80211_configure_filter(local); 102 } else { 103 /* 104 * Because the interface is down, ieee80211_do_stop 105 * and ieee80211_do_open take care of "everything" 106 * mentioned in the comment above. 107 */ 108 sdata->u.mntr.flags = params->flags; 109 } 110 } 111 112 return 0; 113 } 114 115 static int ieee80211_set_ap_mbssid_options(struct ieee80211_sub_if_data *sdata, 116 struct cfg80211_mbssid_config params) 117 { 118 struct ieee80211_sub_if_data *tx_sdata; 119 120 sdata->vif.mbssid_tx_vif = NULL; 121 sdata->vif.bss_conf.bssid_index = 0; 122 sdata->vif.bss_conf.nontransmitted = false; 123 sdata->vif.bss_conf.ema_ap = false; 124 125 if (sdata->vif.type != NL80211_IFTYPE_AP || !params.tx_wdev) 126 return -EINVAL; 127 128 tx_sdata = IEEE80211_WDEV_TO_SUB_IF(params.tx_wdev); 129 if (!tx_sdata) 130 return -EINVAL; 131 132 if (tx_sdata == sdata) { 133 sdata->vif.mbssid_tx_vif = &sdata->vif; 134 } else { 135 sdata->vif.mbssid_tx_vif = &tx_sdata->vif; 136 sdata->vif.bss_conf.nontransmitted = true; 137 sdata->vif.bss_conf.bssid_index = params.index; 138 } 139 if (params.ema) 140 sdata->vif.bss_conf.ema_ap = true; 141 142 return 0; 143 } 144 145 static struct wireless_dev *ieee80211_add_iface(struct wiphy *wiphy, 146 const char *name, 147 unsigned char name_assign_type, 148 enum nl80211_iftype type, 149 struct vif_params *params) 150 { 151 struct ieee80211_local *local = wiphy_priv(wiphy); 152 struct wireless_dev *wdev; 153 struct ieee80211_sub_if_data *sdata; 154 int err; 155 156 err = ieee80211_if_add(local, name, name_assign_type, &wdev, type, params); 157 if (err) 158 return ERR_PTR(err); 159 160 sdata = IEEE80211_WDEV_TO_SUB_IF(wdev); 161 162 if (type == NL80211_IFTYPE_MONITOR) { 163 err = ieee80211_set_mon_options(sdata, params); 164 if (err) { 165 ieee80211_if_remove(sdata); 166 return NULL; 167 } 168 } 169 170 return wdev; 171 } 172 173 static int ieee80211_del_iface(struct wiphy *wiphy, struct wireless_dev *wdev) 174 { 175 ieee80211_if_remove(IEEE80211_WDEV_TO_SUB_IF(wdev)); 176 177 return 0; 178 } 179 180 static int ieee80211_change_iface(struct wiphy *wiphy, 181 struct net_device *dev, 182 enum nl80211_iftype type, 183 struct vif_params *params) 184 { 185 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 186 struct ieee80211_local *local = sdata->local; 187 struct sta_info *sta; 188 int ret; 189 190 ret = ieee80211_if_change_type(sdata, type); 191 if (ret) 192 return ret; 193 194 if (type == NL80211_IFTYPE_AP_VLAN && params->use_4addr == 0) { 195 RCU_INIT_POINTER(sdata->u.vlan.sta, NULL); 196 ieee80211_check_fast_rx_iface(sdata); 197 } else if (type == NL80211_IFTYPE_STATION && params->use_4addr >= 0) { 198 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; 199 200 if (params->use_4addr == ifmgd->use_4addr) 201 return 0; 202 203 sdata->u.mgd.use_4addr = params->use_4addr; 204 if (!ifmgd->associated) 205 return 0; 206 207 mutex_lock(&local->sta_mtx); 208 sta = sta_info_get(sdata, ifmgd->bssid); 209 if (sta) 210 drv_sta_set_4addr(local, sdata, &sta->sta, 211 params->use_4addr); 212 mutex_unlock(&local->sta_mtx); 213 214 if (params->use_4addr) 215 ieee80211_send_4addr_nullfunc(local, sdata); 216 } 217 218 if (sdata->vif.type == NL80211_IFTYPE_MONITOR) { 219 ret = ieee80211_set_mon_options(sdata, params); 220 if (ret) 221 return ret; 222 } 223 224 return 0; 225 } 226 227 static int ieee80211_start_p2p_device(struct wiphy *wiphy, 228 struct wireless_dev *wdev) 229 { 230 struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev); 231 int ret; 232 233 mutex_lock(&sdata->local->chanctx_mtx); 234 ret = ieee80211_check_combinations(sdata, NULL, 0, 0); 235 mutex_unlock(&sdata->local->chanctx_mtx); 236 if (ret < 0) 237 return ret; 238 239 return ieee80211_do_open(wdev, true); 240 } 241 242 static void ieee80211_stop_p2p_device(struct wiphy *wiphy, 243 struct wireless_dev *wdev) 244 { 245 ieee80211_sdata_stop(IEEE80211_WDEV_TO_SUB_IF(wdev)); 246 } 247 248 static int ieee80211_start_nan(struct wiphy *wiphy, 249 struct wireless_dev *wdev, 250 struct cfg80211_nan_conf *conf) 251 { 252 struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev); 253 int ret; 254 255 mutex_lock(&sdata->local->chanctx_mtx); 256 ret = ieee80211_check_combinations(sdata, NULL, 0, 0); 257 mutex_unlock(&sdata->local->chanctx_mtx); 258 if (ret < 0) 259 return ret; 260 261 ret = ieee80211_do_open(wdev, true); 262 if (ret) 263 return ret; 264 265 ret = drv_start_nan(sdata->local, sdata, conf); 266 if (ret) 267 ieee80211_sdata_stop(sdata); 268 269 sdata->u.nan.conf = *conf; 270 271 return ret; 272 } 273 274 static void ieee80211_stop_nan(struct wiphy *wiphy, 275 struct wireless_dev *wdev) 276 { 277 struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev); 278 279 drv_stop_nan(sdata->local, sdata); 280 ieee80211_sdata_stop(sdata); 281 } 282 283 static int ieee80211_nan_change_conf(struct wiphy *wiphy, 284 struct wireless_dev *wdev, 285 struct cfg80211_nan_conf *conf, 286 u32 changes) 287 { 288 struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev); 289 struct cfg80211_nan_conf new_conf; 290 int ret = 0; 291 292 if (sdata->vif.type != NL80211_IFTYPE_NAN) 293 return -EOPNOTSUPP; 294 295 if (!ieee80211_sdata_running(sdata)) 296 return -ENETDOWN; 297 298 new_conf = sdata->u.nan.conf; 299 300 if (changes & CFG80211_NAN_CONF_CHANGED_PREF) 301 new_conf.master_pref = conf->master_pref; 302 303 if (changes & CFG80211_NAN_CONF_CHANGED_BANDS) 304 new_conf.bands = conf->bands; 305 306 ret = drv_nan_change_conf(sdata->local, sdata, &new_conf, changes); 307 if (!ret) 308 sdata->u.nan.conf = new_conf; 309 310 return ret; 311 } 312 313 static int ieee80211_add_nan_func(struct wiphy *wiphy, 314 struct wireless_dev *wdev, 315 struct cfg80211_nan_func *nan_func) 316 { 317 struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev); 318 int ret; 319 320 if (sdata->vif.type != NL80211_IFTYPE_NAN) 321 return -EOPNOTSUPP; 322 323 if (!ieee80211_sdata_running(sdata)) 324 return -ENETDOWN; 325 326 spin_lock_bh(&sdata->u.nan.func_lock); 327 328 ret = idr_alloc(&sdata->u.nan.function_inst_ids, 329 nan_func, 1, sdata->local->hw.max_nan_de_entries + 1, 330 GFP_ATOMIC); 331 spin_unlock_bh(&sdata->u.nan.func_lock); 332 333 if (ret < 0) 334 return ret; 335 336 nan_func->instance_id = ret; 337 338 WARN_ON(nan_func->instance_id == 0); 339 340 ret = drv_add_nan_func(sdata->local, sdata, nan_func); 341 if (ret) { 342 spin_lock_bh(&sdata->u.nan.func_lock); 343 idr_remove(&sdata->u.nan.function_inst_ids, 344 nan_func->instance_id); 345 spin_unlock_bh(&sdata->u.nan.func_lock); 346 } 347 348 return ret; 349 } 350 351 static struct cfg80211_nan_func * 352 ieee80211_find_nan_func_by_cookie(struct ieee80211_sub_if_data *sdata, 353 u64 cookie) 354 { 355 struct cfg80211_nan_func *func; 356 int id; 357 358 lockdep_assert_held(&sdata->u.nan.func_lock); 359 360 idr_for_each_entry(&sdata->u.nan.function_inst_ids, func, id) { 361 if (func->cookie == cookie) 362 return func; 363 } 364 365 return NULL; 366 } 367 368 static void ieee80211_del_nan_func(struct wiphy *wiphy, 369 struct wireless_dev *wdev, u64 cookie) 370 { 371 struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev); 372 struct cfg80211_nan_func *func; 373 u8 instance_id = 0; 374 375 if (sdata->vif.type != NL80211_IFTYPE_NAN || 376 !ieee80211_sdata_running(sdata)) 377 return; 378 379 spin_lock_bh(&sdata->u.nan.func_lock); 380 381 func = ieee80211_find_nan_func_by_cookie(sdata, cookie); 382 if (func) 383 instance_id = func->instance_id; 384 385 spin_unlock_bh(&sdata->u.nan.func_lock); 386 387 if (instance_id) 388 drv_del_nan_func(sdata->local, sdata, instance_id); 389 } 390 391 static int ieee80211_set_noack_map(struct wiphy *wiphy, 392 struct net_device *dev, 393 u16 noack_map) 394 { 395 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 396 397 sdata->noack_map = noack_map; 398 399 ieee80211_check_fast_xmit_iface(sdata); 400 401 return 0; 402 } 403 404 static int ieee80211_set_tx(struct ieee80211_sub_if_data *sdata, 405 const u8 *mac_addr, u8 key_idx) 406 { 407 struct ieee80211_local *local = sdata->local; 408 struct ieee80211_key *key; 409 struct sta_info *sta; 410 int ret = -EINVAL; 411 412 if (!wiphy_ext_feature_isset(local->hw.wiphy, 413 NL80211_EXT_FEATURE_EXT_KEY_ID)) 414 return -EINVAL; 415 416 sta = sta_info_get_bss(sdata, mac_addr); 417 418 if (!sta) 419 return -EINVAL; 420 421 if (sta->ptk_idx == key_idx) 422 return 0; 423 424 mutex_lock(&local->key_mtx); 425 key = key_mtx_dereference(local, sta->ptk[key_idx]); 426 427 if (key && key->conf.flags & IEEE80211_KEY_FLAG_NO_AUTO_TX) 428 ret = ieee80211_set_tx_key(key); 429 430 mutex_unlock(&local->key_mtx); 431 return ret; 432 } 433 434 static int ieee80211_add_key(struct wiphy *wiphy, struct net_device *dev, 435 u8 key_idx, bool pairwise, const u8 *mac_addr, 436 struct key_params *params) 437 { 438 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 439 struct ieee80211_local *local = sdata->local; 440 struct sta_info *sta = NULL; 441 const struct ieee80211_cipher_scheme *cs = NULL; 442 struct ieee80211_key *key; 443 int err; 444 445 if (!ieee80211_sdata_running(sdata)) 446 return -ENETDOWN; 447 448 if (pairwise && params->mode == NL80211_KEY_SET_TX) 449 return ieee80211_set_tx(sdata, mac_addr, key_idx); 450 451 /* reject WEP and TKIP keys if WEP failed to initialize */ 452 switch (params->cipher) { 453 case WLAN_CIPHER_SUITE_WEP40: 454 case WLAN_CIPHER_SUITE_TKIP: 455 case WLAN_CIPHER_SUITE_WEP104: 456 if (WARN_ON_ONCE(fips_enabled)) 457 return -EINVAL; 458 break; 459 case WLAN_CIPHER_SUITE_CCMP: 460 case WLAN_CIPHER_SUITE_CCMP_256: 461 case WLAN_CIPHER_SUITE_AES_CMAC: 462 case WLAN_CIPHER_SUITE_BIP_CMAC_256: 463 case WLAN_CIPHER_SUITE_BIP_GMAC_128: 464 case WLAN_CIPHER_SUITE_BIP_GMAC_256: 465 case WLAN_CIPHER_SUITE_GCMP: 466 case WLAN_CIPHER_SUITE_GCMP_256: 467 break; 468 default: 469 cs = ieee80211_cs_get(local, params->cipher, sdata->vif.type); 470 break; 471 } 472 473 key = ieee80211_key_alloc(params->cipher, key_idx, params->key_len, 474 params->key, params->seq_len, params->seq, 475 cs); 476 if (IS_ERR(key)) 477 return PTR_ERR(key); 478 479 if (pairwise) 480 key->conf.flags |= IEEE80211_KEY_FLAG_PAIRWISE; 481 482 if (params->mode == NL80211_KEY_NO_TX) 483 key->conf.flags |= IEEE80211_KEY_FLAG_NO_AUTO_TX; 484 485 mutex_lock(&local->sta_mtx); 486 487 if (mac_addr) { 488 sta = sta_info_get_bss(sdata, mac_addr); 489 /* 490 * The ASSOC test makes sure the driver is ready to 491 * receive the key. When wpa_supplicant has roamed 492 * using FT, it attempts to set the key before 493 * association has completed, this rejects that attempt 494 * so it will set the key again after association. 495 * 496 * TODO: accept the key if we have a station entry and 497 * add it to the device after the station. 498 */ 499 if (!sta || !test_sta_flag(sta, WLAN_STA_ASSOC)) { 500 ieee80211_key_free_unused(key); 501 err = -ENOENT; 502 goto out_unlock; 503 } 504 } 505 506 switch (sdata->vif.type) { 507 case NL80211_IFTYPE_STATION: 508 if (sdata->u.mgd.mfp != IEEE80211_MFP_DISABLED) 509 key->conf.flags |= IEEE80211_KEY_FLAG_RX_MGMT; 510 break; 511 case NL80211_IFTYPE_AP: 512 case NL80211_IFTYPE_AP_VLAN: 513 /* Keys without a station are used for TX only */ 514 if (sta && test_sta_flag(sta, WLAN_STA_MFP)) 515 key->conf.flags |= IEEE80211_KEY_FLAG_RX_MGMT; 516 break; 517 case NL80211_IFTYPE_ADHOC: 518 /* no MFP (yet) */ 519 break; 520 case NL80211_IFTYPE_MESH_POINT: 521 #ifdef CONFIG_MAC80211_MESH 522 if (sdata->u.mesh.security != IEEE80211_MESH_SEC_NONE) 523 key->conf.flags |= IEEE80211_KEY_FLAG_RX_MGMT; 524 break; 525 #endif 526 case NL80211_IFTYPE_WDS: 527 case NL80211_IFTYPE_MONITOR: 528 case NL80211_IFTYPE_P2P_DEVICE: 529 case NL80211_IFTYPE_NAN: 530 case NL80211_IFTYPE_UNSPECIFIED: 531 case NUM_NL80211_IFTYPES: 532 case NL80211_IFTYPE_P2P_CLIENT: 533 case NL80211_IFTYPE_P2P_GO: 534 case NL80211_IFTYPE_OCB: 535 /* shouldn't happen */ 536 WARN_ON_ONCE(1); 537 break; 538 } 539 540 if (sta) 541 sta->cipher_scheme = cs; 542 543 err = ieee80211_key_link(key, sdata, sta); 544 545 out_unlock: 546 mutex_unlock(&local->sta_mtx); 547 548 return err; 549 } 550 551 static int ieee80211_del_key(struct wiphy *wiphy, struct net_device *dev, 552 u8 key_idx, bool pairwise, const u8 *mac_addr) 553 { 554 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 555 struct ieee80211_local *local = sdata->local; 556 struct sta_info *sta; 557 struct ieee80211_key *key = NULL; 558 int ret; 559 560 mutex_lock(&local->sta_mtx); 561 mutex_lock(&local->key_mtx); 562 563 if (mac_addr) { 564 ret = -ENOENT; 565 566 sta = sta_info_get_bss(sdata, mac_addr); 567 if (!sta) 568 goto out_unlock; 569 570 if (pairwise) 571 key = key_mtx_dereference(local, sta->ptk[key_idx]); 572 else 573 key = key_mtx_dereference(local, sta->gtk[key_idx]); 574 } else 575 key = key_mtx_dereference(local, sdata->keys[key_idx]); 576 577 if (!key) { 578 ret = -ENOENT; 579 goto out_unlock; 580 } 581 582 ieee80211_key_free(key, sdata->vif.type == NL80211_IFTYPE_STATION); 583 584 ret = 0; 585 out_unlock: 586 mutex_unlock(&local->key_mtx); 587 mutex_unlock(&local->sta_mtx); 588 589 return ret; 590 } 591 592 static int ieee80211_get_key(struct wiphy *wiphy, struct net_device *dev, 593 u8 key_idx, bool pairwise, const u8 *mac_addr, 594 void *cookie, 595 void (*callback)(void *cookie, 596 struct key_params *params)) 597 { 598 struct ieee80211_sub_if_data *sdata; 599 struct sta_info *sta = NULL; 600 u8 seq[6] = {0}; 601 struct key_params params; 602 struct ieee80211_key *key = NULL; 603 u64 pn64; 604 u32 iv32; 605 u16 iv16; 606 int err = -ENOENT; 607 struct ieee80211_key_seq kseq = {}; 608 609 sdata = IEEE80211_DEV_TO_SUB_IF(dev); 610 611 rcu_read_lock(); 612 613 if (mac_addr) { 614 sta = sta_info_get_bss(sdata, mac_addr); 615 if (!sta) 616 goto out; 617 618 if (pairwise && key_idx < NUM_DEFAULT_KEYS) 619 key = rcu_dereference(sta->ptk[key_idx]); 620 else if (!pairwise && 621 key_idx < NUM_DEFAULT_KEYS + NUM_DEFAULT_MGMT_KEYS + 622 NUM_DEFAULT_BEACON_KEYS) 623 key = rcu_dereference(sta->gtk[key_idx]); 624 } else 625 key = rcu_dereference(sdata->keys[key_idx]); 626 627 if (!key) 628 goto out; 629 630 memset(¶ms, 0, sizeof(params)); 631 632 params.cipher = key->conf.cipher; 633 634 switch (key->conf.cipher) { 635 case WLAN_CIPHER_SUITE_TKIP: 636 pn64 = atomic64_read(&key->conf.tx_pn); 637 iv32 = TKIP_PN_TO_IV32(pn64); 638 iv16 = TKIP_PN_TO_IV16(pn64); 639 640 if (key->flags & KEY_FLAG_UPLOADED_TO_HARDWARE && 641 !(key->conf.flags & IEEE80211_KEY_FLAG_GENERATE_IV)) { 642 drv_get_key_seq(sdata->local, key, &kseq); 643 iv32 = kseq.tkip.iv32; 644 iv16 = kseq.tkip.iv16; 645 } 646 647 seq[0] = iv16 & 0xff; 648 seq[1] = (iv16 >> 8) & 0xff; 649 seq[2] = iv32 & 0xff; 650 seq[3] = (iv32 >> 8) & 0xff; 651 seq[4] = (iv32 >> 16) & 0xff; 652 seq[5] = (iv32 >> 24) & 0xff; 653 params.seq = seq; 654 params.seq_len = 6; 655 break; 656 case WLAN_CIPHER_SUITE_CCMP: 657 case WLAN_CIPHER_SUITE_CCMP_256: 658 case WLAN_CIPHER_SUITE_AES_CMAC: 659 case WLAN_CIPHER_SUITE_BIP_CMAC_256: 660 BUILD_BUG_ON(offsetof(typeof(kseq), ccmp) != 661 offsetof(typeof(kseq), aes_cmac)); 662 fallthrough; 663 case WLAN_CIPHER_SUITE_BIP_GMAC_128: 664 case WLAN_CIPHER_SUITE_BIP_GMAC_256: 665 BUILD_BUG_ON(offsetof(typeof(kseq), ccmp) != 666 offsetof(typeof(kseq), aes_gmac)); 667 fallthrough; 668 case WLAN_CIPHER_SUITE_GCMP: 669 case WLAN_CIPHER_SUITE_GCMP_256: 670 BUILD_BUG_ON(offsetof(typeof(kseq), ccmp) != 671 offsetof(typeof(kseq), gcmp)); 672 673 if (key->flags & KEY_FLAG_UPLOADED_TO_HARDWARE && 674 !(key->conf.flags & IEEE80211_KEY_FLAG_GENERATE_IV)) { 675 drv_get_key_seq(sdata->local, key, &kseq); 676 memcpy(seq, kseq.ccmp.pn, 6); 677 } else { 678 pn64 = atomic64_read(&key->conf.tx_pn); 679 seq[0] = pn64; 680 seq[1] = pn64 >> 8; 681 seq[2] = pn64 >> 16; 682 seq[3] = pn64 >> 24; 683 seq[4] = pn64 >> 32; 684 seq[5] = pn64 >> 40; 685 } 686 params.seq = seq; 687 params.seq_len = 6; 688 break; 689 default: 690 if (!(key->flags & KEY_FLAG_UPLOADED_TO_HARDWARE)) 691 break; 692 if (WARN_ON(key->conf.flags & IEEE80211_KEY_FLAG_GENERATE_IV)) 693 break; 694 drv_get_key_seq(sdata->local, key, &kseq); 695 params.seq = kseq.hw.seq; 696 params.seq_len = kseq.hw.seq_len; 697 break; 698 } 699 700 params.key = key->conf.key; 701 params.key_len = key->conf.keylen; 702 703 callback(cookie, ¶ms); 704 err = 0; 705 706 out: 707 rcu_read_unlock(); 708 return err; 709 } 710 711 static int ieee80211_config_default_key(struct wiphy *wiphy, 712 struct net_device *dev, 713 u8 key_idx, bool uni, 714 bool multi) 715 { 716 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 717 718 ieee80211_set_default_key(sdata, key_idx, uni, multi); 719 720 return 0; 721 } 722 723 static int ieee80211_config_default_mgmt_key(struct wiphy *wiphy, 724 struct net_device *dev, 725 u8 key_idx) 726 { 727 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 728 729 ieee80211_set_default_mgmt_key(sdata, key_idx); 730 731 return 0; 732 } 733 734 static int ieee80211_config_default_beacon_key(struct wiphy *wiphy, 735 struct net_device *dev, 736 u8 key_idx) 737 { 738 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 739 740 ieee80211_set_default_beacon_key(sdata, key_idx); 741 742 return 0; 743 } 744 745 void sta_set_rate_info_tx(struct sta_info *sta, 746 const struct ieee80211_tx_rate *rate, 747 struct rate_info *rinfo) 748 { 749 rinfo->flags = 0; 750 if (rate->flags & IEEE80211_TX_RC_MCS) { 751 rinfo->flags |= RATE_INFO_FLAGS_MCS; 752 rinfo->mcs = rate->idx; 753 } else if (rate->flags & IEEE80211_TX_RC_VHT_MCS) { 754 rinfo->flags |= RATE_INFO_FLAGS_VHT_MCS; 755 rinfo->mcs = ieee80211_rate_get_vht_mcs(rate); 756 rinfo->nss = ieee80211_rate_get_vht_nss(rate); 757 } else { 758 struct ieee80211_supported_band *sband; 759 int shift = ieee80211_vif_get_shift(&sta->sdata->vif); 760 u16 brate; 761 762 sband = ieee80211_get_sband(sta->sdata); 763 WARN_ON_ONCE(sband && !sband->bitrates); 764 if (sband && sband->bitrates) { 765 brate = sband->bitrates[rate->idx].bitrate; 766 rinfo->legacy = DIV_ROUND_UP(brate, 1 << shift); 767 } 768 } 769 if (rate->flags & IEEE80211_TX_RC_40_MHZ_WIDTH) 770 rinfo->bw = RATE_INFO_BW_40; 771 else if (rate->flags & IEEE80211_TX_RC_80_MHZ_WIDTH) 772 rinfo->bw = RATE_INFO_BW_80; 773 else if (rate->flags & IEEE80211_TX_RC_160_MHZ_WIDTH) 774 rinfo->bw = RATE_INFO_BW_160; 775 else 776 rinfo->bw = RATE_INFO_BW_20; 777 if (rate->flags & IEEE80211_TX_RC_SHORT_GI) 778 rinfo->flags |= RATE_INFO_FLAGS_SHORT_GI; 779 } 780 781 static int ieee80211_dump_station(struct wiphy *wiphy, struct net_device *dev, 782 int idx, u8 *mac, struct station_info *sinfo) 783 { 784 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 785 struct ieee80211_local *local = sdata->local; 786 struct sta_info *sta; 787 int ret = -ENOENT; 788 789 mutex_lock(&local->sta_mtx); 790 791 sta = sta_info_get_by_idx(sdata, idx); 792 if (sta) { 793 ret = 0; 794 memcpy(mac, sta->sta.addr, ETH_ALEN); 795 sta_set_sinfo(sta, sinfo, true); 796 } 797 798 mutex_unlock(&local->sta_mtx); 799 800 return ret; 801 } 802 803 static int ieee80211_dump_survey(struct wiphy *wiphy, struct net_device *dev, 804 int idx, struct survey_info *survey) 805 { 806 struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr); 807 808 return drv_get_survey(local, idx, survey); 809 } 810 811 static int ieee80211_get_station(struct wiphy *wiphy, struct net_device *dev, 812 const u8 *mac, struct station_info *sinfo) 813 { 814 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 815 struct ieee80211_local *local = sdata->local; 816 struct sta_info *sta; 817 int ret = -ENOENT; 818 819 mutex_lock(&local->sta_mtx); 820 821 sta = sta_info_get_bss(sdata, mac); 822 if (sta) { 823 ret = 0; 824 sta_set_sinfo(sta, sinfo, true); 825 } 826 827 mutex_unlock(&local->sta_mtx); 828 829 return ret; 830 } 831 832 static int ieee80211_set_monitor_channel(struct wiphy *wiphy, 833 struct cfg80211_chan_def *chandef) 834 { 835 struct ieee80211_local *local = wiphy_priv(wiphy); 836 struct ieee80211_sub_if_data *sdata; 837 int ret = 0; 838 839 if (cfg80211_chandef_identical(&local->monitor_chandef, chandef)) 840 return 0; 841 842 mutex_lock(&local->mtx); 843 if (local->use_chanctx) { 844 sdata = wiphy_dereference(local->hw.wiphy, 845 local->monitor_sdata); 846 if (sdata) { 847 ieee80211_vif_release_channel(sdata); 848 ret = ieee80211_vif_use_channel(sdata, chandef, 849 IEEE80211_CHANCTX_EXCLUSIVE); 850 } 851 } else if (local->open_count == local->monitors) { 852 local->_oper_chandef = *chandef; 853 ieee80211_hw_config(local, 0); 854 } 855 856 if (ret == 0) 857 local->monitor_chandef = *chandef; 858 mutex_unlock(&local->mtx); 859 860 return ret; 861 } 862 863 static int 864 ieee80211_set_probe_resp(struct ieee80211_sub_if_data *sdata, 865 const u8 *resp, size_t resp_len, 866 const struct ieee80211_csa_settings *csa, 867 const struct ieee80211_color_change_settings *cca) 868 { 869 struct probe_resp *new, *old; 870 871 if (!resp || !resp_len) 872 return 1; 873 874 old = sdata_dereference(sdata->u.ap.probe_resp, sdata); 875 876 new = kzalloc(sizeof(struct probe_resp) + resp_len, GFP_KERNEL); 877 if (!new) 878 return -ENOMEM; 879 880 new->len = resp_len; 881 memcpy(new->data, resp, resp_len); 882 883 if (csa) 884 memcpy(new->cntdwn_counter_offsets, csa->counter_offsets_presp, 885 csa->n_counter_offsets_presp * 886 sizeof(new->cntdwn_counter_offsets[0])); 887 else if (cca) 888 new->cntdwn_counter_offsets[0] = cca->counter_offset_presp; 889 890 rcu_assign_pointer(sdata->u.ap.probe_resp, new); 891 if (old) 892 kfree_rcu(old, rcu_head); 893 894 return 0; 895 } 896 897 static int ieee80211_set_fils_discovery(struct ieee80211_sub_if_data *sdata, 898 struct cfg80211_fils_discovery *params) 899 { 900 struct fils_discovery_data *new, *old = NULL; 901 struct ieee80211_fils_discovery *fd; 902 903 if (!params->tmpl || !params->tmpl_len) 904 return -EINVAL; 905 906 fd = &sdata->vif.bss_conf.fils_discovery; 907 fd->min_interval = params->min_interval; 908 fd->max_interval = params->max_interval; 909 910 old = sdata_dereference(sdata->u.ap.fils_discovery, sdata); 911 new = kzalloc(sizeof(*new) + params->tmpl_len, GFP_KERNEL); 912 if (!new) 913 return -ENOMEM; 914 new->len = params->tmpl_len; 915 memcpy(new->data, params->tmpl, params->tmpl_len); 916 rcu_assign_pointer(sdata->u.ap.fils_discovery, new); 917 918 if (old) 919 kfree_rcu(old, rcu_head); 920 921 return 0; 922 } 923 924 static int 925 ieee80211_set_unsol_bcast_probe_resp(struct ieee80211_sub_if_data *sdata, 926 struct cfg80211_unsol_bcast_probe_resp *params) 927 { 928 struct unsol_bcast_probe_resp_data *new, *old = NULL; 929 930 if (!params->tmpl || !params->tmpl_len) 931 return -EINVAL; 932 933 old = sdata_dereference(sdata->u.ap.unsol_bcast_probe_resp, sdata); 934 new = kzalloc(sizeof(*new) + params->tmpl_len, GFP_KERNEL); 935 if (!new) 936 return -ENOMEM; 937 new->len = params->tmpl_len; 938 memcpy(new->data, params->tmpl, params->tmpl_len); 939 rcu_assign_pointer(sdata->u.ap.unsol_bcast_probe_resp, new); 940 941 if (old) 942 kfree_rcu(old, rcu_head); 943 944 sdata->vif.bss_conf.unsol_bcast_probe_resp_interval = 945 params->interval; 946 947 return 0; 948 } 949 950 static int ieee80211_set_ftm_responder_params( 951 struct ieee80211_sub_if_data *sdata, 952 const u8 *lci, size_t lci_len, 953 const u8 *civicloc, size_t civicloc_len) 954 { 955 struct ieee80211_ftm_responder_params *new, *old; 956 struct ieee80211_bss_conf *bss_conf; 957 u8 *pos; 958 int len; 959 960 if (!lci_len && !civicloc_len) 961 return 0; 962 963 bss_conf = &sdata->vif.bss_conf; 964 old = bss_conf->ftmr_params; 965 len = lci_len + civicloc_len; 966 967 new = kzalloc(sizeof(*new) + len, GFP_KERNEL); 968 if (!new) 969 return -ENOMEM; 970 971 pos = (u8 *)(new + 1); 972 if (lci_len) { 973 new->lci_len = lci_len; 974 new->lci = pos; 975 memcpy(pos, lci, lci_len); 976 pos += lci_len; 977 } 978 979 if (civicloc_len) { 980 new->civicloc_len = civicloc_len; 981 new->civicloc = pos; 982 memcpy(pos, civicloc, civicloc_len); 983 pos += civicloc_len; 984 } 985 986 bss_conf->ftmr_params = new; 987 kfree(old); 988 989 return 0; 990 } 991 992 static int ieee80211_assign_beacon(struct ieee80211_sub_if_data *sdata, 993 struct cfg80211_beacon_data *params, 994 const struct ieee80211_csa_settings *csa, 995 const struct ieee80211_color_change_settings *cca) 996 { 997 struct beacon_data *new, *old; 998 int new_head_len, new_tail_len; 999 int size, err; 1000 u32 changed = BSS_CHANGED_BEACON; 1001 1002 old = sdata_dereference(sdata->u.ap.beacon, sdata); 1003 1004 1005 /* Need to have a beacon head if we don't have one yet */ 1006 if (!params->head && !old) 1007 return -EINVAL; 1008 1009 /* new or old head? */ 1010 if (params->head) 1011 new_head_len = params->head_len; 1012 else 1013 new_head_len = old->head_len; 1014 1015 /* new or old tail? */ 1016 if (params->tail || !old) 1017 /* params->tail_len will be zero for !params->tail */ 1018 new_tail_len = params->tail_len; 1019 else 1020 new_tail_len = old->tail_len; 1021 1022 size = sizeof(*new) + new_head_len + new_tail_len; 1023 1024 new = kzalloc(size, GFP_KERNEL); 1025 if (!new) 1026 return -ENOMEM; 1027 1028 /* start filling the new info now */ 1029 1030 /* 1031 * pointers go into the block we allocated, 1032 * memory is | beacon_data | head | tail | 1033 */ 1034 new->head = ((u8 *) new) + sizeof(*new); 1035 new->tail = new->head + new_head_len; 1036 new->head_len = new_head_len; 1037 new->tail_len = new_tail_len; 1038 1039 if (csa) { 1040 new->cntdwn_current_counter = csa->count; 1041 memcpy(new->cntdwn_counter_offsets, csa->counter_offsets_beacon, 1042 csa->n_counter_offsets_beacon * 1043 sizeof(new->cntdwn_counter_offsets[0])); 1044 } else if (cca) { 1045 new->cntdwn_current_counter = cca->count; 1046 new->cntdwn_counter_offsets[0] = cca->counter_offset_beacon; 1047 } 1048 1049 /* copy in head */ 1050 if (params->head) 1051 memcpy(new->head, params->head, new_head_len); 1052 else 1053 memcpy(new->head, old->head, new_head_len); 1054 1055 /* copy in optional tail */ 1056 if (params->tail) 1057 memcpy(new->tail, params->tail, new_tail_len); 1058 else 1059 if (old) 1060 memcpy(new->tail, old->tail, new_tail_len); 1061 1062 err = ieee80211_set_probe_resp(sdata, params->probe_resp, 1063 params->probe_resp_len, csa, cca); 1064 if (err < 0) { 1065 kfree(new); 1066 return err; 1067 } 1068 if (err == 0) 1069 changed |= BSS_CHANGED_AP_PROBE_RESP; 1070 1071 if (params->ftm_responder != -1) { 1072 sdata->vif.bss_conf.ftm_responder = params->ftm_responder; 1073 err = ieee80211_set_ftm_responder_params(sdata, 1074 params->lci, 1075 params->lci_len, 1076 params->civicloc, 1077 params->civicloc_len); 1078 1079 if (err < 0) { 1080 kfree(new); 1081 return err; 1082 } 1083 1084 changed |= BSS_CHANGED_FTM_RESPONDER; 1085 } 1086 1087 rcu_assign_pointer(sdata->u.ap.beacon, new); 1088 1089 if (old) 1090 kfree_rcu(old, rcu_head); 1091 1092 return changed; 1093 } 1094 1095 static int ieee80211_start_ap(struct wiphy *wiphy, struct net_device *dev, 1096 struct cfg80211_ap_settings *params) 1097 { 1098 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 1099 struct ieee80211_local *local = sdata->local; 1100 struct beacon_data *old; 1101 struct ieee80211_sub_if_data *vlan; 1102 u32 changed = BSS_CHANGED_BEACON_INT | 1103 BSS_CHANGED_BEACON_ENABLED | 1104 BSS_CHANGED_BEACON | 1105 BSS_CHANGED_SSID | 1106 BSS_CHANGED_P2P_PS | 1107 BSS_CHANGED_TXPOWER | 1108 BSS_CHANGED_TWT; 1109 int i, err; 1110 int prev_beacon_int; 1111 1112 old = sdata_dereference(sdata->u.ap.beacon, sdata); 1113 if (old) 1114 return -EALREADY; 1115 1116 if (params->smps_mode != NL80211_SMPS_OFF) 1117 return -ENOTSUPP; 1118 1119 sdata->smps_mode = IEEE80211_SMPS_OFF; 1120 1121 sdata->needed_rx_chains = sdata->local->rx_chains; 1122 1123 prev_beacon_int = sdata->vif.bss_conf.beacon_int; 1124 sdata->vif.bss_conf.beacon_int = params->beacon_interval; 1125 1126 if (params->he_cap && params->he_oper) { 1127 sdata->vif.bss_conf.he_support = true; 1128 sdata->vif.bss_conf.htc_trig_based_pkt_ext = 1129 le32_get_bits(params->he_oper->he_oper_params, 1130 IEEE80211_HE_OPERATION_DFLT_PE_DURATION_MASK); 1131 sdata->vif.bss_conf.frame_time_rts_th = 1132 le32_get_bits(params->he_oper->he_oper_params, 1133 IEEE80211_HE_OPERATION_RTS_THRESHOLD_MASK); 1134 changed |= BSS_CHANGED_HE_OBSS_PD; 1135 1136 if (params->he_bss_color.enabled) 1137 changed |= BSS_CHANGED_HE_BSS_COLOR; 1138 } 1139 1140 if (sdata->vif.type == NL80211_IFTYPE_AP && 1141 params->mbssid_config.tx_wdev) { 1142 err = ieee80211_set_ap_mbssid_options(sdata, 1143 params->mbssid_config); 1144 if (err) 1145 return err; 1146 } 1147 1148 mutex_lock(&local->mtx); 1149 err = ieee80211_vif_use_channel(sdata, ¶ms->chandef, 1150 IEEE80211_CHANCTX_SHARED); 1151 if (!err) 1152 ieee80211_vif_copy_chanctx_to_vlans(sdata, false); 1153 mutex_unlock(&local->mtx); 1154 if (err) { 1155 sdata->vif.bss_conf.beacon_int = prev_beacon_int; 1156 return err; 1157 } 1158 1159 /* 1160 * Apply control port protocol, this allows us to 1161 * not encrypt dynamic WEP control frames. 1162 */ 1163 sdata->control_port_protocol = params->crypto.control_port_ethertype; 1164 sdata->control_port_no_encrypt = params->crypto.control_port_no_encrypt; 1165 sdata->control_port_over_nl80211 = 1166 params->crypto.control_port_over_nl80211; 1167 sdata->control_port_no_preauth = 1168 params->crypto.control_port_no_preauth; 1169 sdata->encrypt_headroom = ieee80211_cs_headroom(sdata->local, 1170 ¶ms->crypto, 1171 sdata->vif.type); 1172 1173 list_for_each_entry(vlan, &sdata->u.ap.vlans, u.vlan.list) { 1174 vlan->control_port_protocol = 1175 params->crypto.control_port_ethertype; 1176 vlan->control_port_no_encrypt = 1177 params->crypto.control_port_no_encrypt; 1178 vlan->control_port_over_nl80211 = 1179 params->crypto.control_port_over_nl80211; 1180 vlan->control_port_no_preauth = 1181 params->crypto.control_port_no_preauth; 1182 vlan->encrypt_headroom = 1183 ieee80211_cs_headroom(sdata->local, 1184 ¶ms->crypto, 1185 vlan->vif.type); 1186 } 1187 1188 sdata->vif.bss_conf.dtim_period = params->dtim_period; 1189 sdata->vif.bss_conf.enable_beacon = true; 1190 sdata->vif.bss_conf.allow_p2p_go_ps = sdata->vif.p2p; 1191 sdata->vif.bss_conf.twt_responder = params->twt_responder; 1192 sdata->vif.bss_conf.he_obss_pd = params->he_obss_pd; 1193 sdata->vif.bss_conf.he_bss_color = params->he_bss_color; 1194 sdata->vif.bss_conf.s1g = params->chandef.chan->band == 1195 NL80211_BAND_S1GHZ; 1196 1197 sdata->vif.bss_conf.ssid_len = params->ssid_len; 1198 if (params->ssid_len) 1199 memcpy(sdata->vif.bss_conf.ssid, params->ssid, 1200 params->ssid_len); 1201 sdata->vif.bss_conf.hidden_ssid = 1202 (params->hidden_ssid != NL80211_HIDDEN_SSID_NOT_IN_USE); 1203 1204 memset(&sdata->vif.bss_conf.p2p_noa_attr, 0, 1205 sizeof(sdata->vif.bss_conf.p2p_noa_attr)); 1206 sdata->vif.bss_conf.p2p_noa_attr.oppps_ctwindow = 1207 params->p2p_ctwindow & IEEE80211_P2P_OPPPS_CTWINDOW_MASK; 1208 if (params->p2p_opp_ps) 1209 sdata->vif.bss_conf.p2p_noa_attr.oppps_ctwindow |= 1210 IEEE80211_P2P_OPPPS_ENABLE_BIT; 1211 1212 sdata->beacon_rate_set = false; 1213 if (wiphy_ext_feature_isset(local->hw.wiphy, 1214 NL80211_EXT_FEATURE_BEACON_RATE_LEGACY)) { 1215 for (i = 0; i < NUM_NL80211_BANDS; i++) { 1216 sdata->beacon_rateidx_mask[i] = 1217 params->beacon_rate.control[i].legacy; 1218 if (sdata->beacon_rateidx_mask[i]) 1219 sdata->beacon_rate_set = true; 1220 } 1221 } 1222 1223 if (ieee80211_hw_check(&local->hw, HAS_RATE_CONTROL)) 1224 sdata->vif.bss_conf.beacon_tx_rate = params->beacon_rate; 1225 1226 err = ieee80211_assign_beacon(sdata, ¶ms->beacon, NULL, NULL); 1227 if (err < 0) 1228 goto error; 1229 changed |= err; 1230 1231 if (params->fils_discovery.max_interval) { 1232 err = ieee80211_set_fils_discovery(sdata, 1233 ¶ms->fils_discovery); 1234 if (err < 0) 1235 goto error; 1236 changed |= BSS_CHANGED_FILS_DISCOVERY; 1237 } 1238 1239 if (params->unsol_bcast_probe_resp.interval) { 1240 err = ieee80211_set_unsol_bcast_probe_resp(sdata, 1241 ¶ms->unsol_bcast_probe_resp); 1242 if (err < 0) 1243 goto error; 1244 changed |= BSS_CHANGED_UNSOL_BCAST_PROBE_RESP; 1245 } 1246 1247 err = drv_start_ap(sdata->local, sdata); 1248 if (err) { 1249 old = sdata_dereference(sdata->u.ap.beacon, sdata); 1250 1251 if (old) 1252 kfree_rcu(old, rcu_head); 1253 RCU_INIT_POINTER(sdata->u.ap.beacon, NULL); 1254 goto error; 1255 } 1256 1257 ieee80211_recalc_dtim(local, sdata); 1258 ieee80211_bss_info_change_notify(sdata, changed); 1259 1260 netif_carrier_on(dev); 1261 list_for_each_entry(vlan, &sdata->u.ap.vlans, u.vlan.list) 1262 netif_carrier_on(vlan->dev); 1263 1264 return 0; 1265 1266 error: 1267 mutex_lock(&local->mtx); 1268 ieee80211_vif_release_channel(sdata); 1269 mutex_unlock(&local->mtx); 1270 1271 return err; 1272 } 1273 1274 static int ieee80211_change_beacon(struct wiphy *wiphy, struct net_device *dev, 1275 struct cfg80211_beacon_data *params) 1276 { 1277 struct ieee80211_sub_if_data *sdata; 1278 struct beacon_data *old; 1279 int err; 1280 1281 sdata = IEEE80211_DEV_TO_SUB_IF(dev); 1282 sdata_assert_lock(sdata); 1283 1284 /* don't allow changing the beacon while a countdown is in place - offset 1285 * of channel switch counter may change 1286 */ 1287 if (sdata->vif.csa_active || sdata->vif.color_change_active) 1288 return -EBUSY; 1289 1290 old = sdata_dereference(sdata->u.ap.beacon, sdata); 1291 if (!old) 1292 return -ENOENT; 1293 1294 err = ieee80211_assign_beacon(sdata, params, NULL, NULL); 1295 if (err < 0) 1296 return err; 1297 ieee80211_bss_info_change_notify(sdata, err); 1298 return 0; 1299 } 1300 1301 static int ieee80211_stop_ap(struct wiphy *wiphy, struct net_device *dev) 1302 { 1303 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 1304 struct ieee80211_sub_if_data *vlan; 1305 struct ieee80211_local *local = sdata->local; 1306 struct beacon_data *old_beacon; 1307 struct probe_resp *old_probe_resp; 1308 struct fils_discovery_data *old_fils_discovery; 1309 struct unsol_bcast_probe_resp_data *old_unsol_bcast_probe_resp; 1310 struct cfg80211_chan_def chandef; 1311 1312 sdata_assert_lock(sdata); 1313 1314 old_beacon = sdata_dereference(sdata->u.ap.beacon, sdata); 1315 if (!old_beacon) 1316 return -ENOENT; 1317 old_probe_resp = sdata_dereference(sdata->u.ap.probe_resp, sdata); 1318 old_fils_discovery = sdata_dereference(sdata->u.ap.fils_discovery, 1319 sdata); 1320 old_unsol_bcast_probe_resp = 1321 sdata_dereference(sdata->u.ap.unsol_bcast_probe_resp, 1322 sdata); 1323 1324 /* abort any running channel switch */ 1325 mutex_lock(&local->mtx); 1326 sdata->vif.csa_active = false; 1327 if (sdata->csa_block_tx) { 1328 ieee80211_wake_vif_queues(local, sdata, 1329 IEEE80211_QUEUE_STOP_REASON_CSA); 1330 sdata->csa_block_tx = false; 1331 } 1332 1333 mutex_unlock(&local->mtx); 1334 1335 kfree(sdata->u.ap.next_beacon); 1336 sdata->u.ap.next_beacon = NULL; 1337 1338 /* turn off carrier for this interface and dependent VLANs */ 1339 list_for_each_entry(vlan, &sdata->u.ap.vlans, u.vlan.list) 1340 netif_carrier_off(vlan->dev); 1341 netif_carrier_off(dev); 1342 1343 /* remove beacon and probe response */ 1344 RCU_INIT_POINTER(sdata->u.ap.beacon, NULL); 1345 RCU_INIT_POINTER(sdata->u.ap.probe_resp, NULL); 1346 RCU_INIT_POINTER(sdata->u.ap.fils_discovery, NULL); 1347 RCU_INIT_POINTER(sdata->u.ap.unsol_bcast_probe_resp, NULL); 1348 kfree_rcu(old_beacon, rcu_head); 1349 if (old_probe_resp) 1350 kfree_rcu(old_probe_resp, rcu_head); 1351 if (old_fils_discovery) 1352 kfree_rcu(old_fils_discovery, rcu_head); 1353 if (old_unsol_bcast_probe_resp) 1354 kfree_rcu(old_unsol_bcast_probe_resp, rcu_head); 1355 1356 kfree(sdata->vif.bss_conf.ftmr_params); 1357 sdata->vif.bss_conf.ftmr_params = NULL; 1358 1359 __sta_info_flush(sdata, true); 1360 ieee80211_free_keys(sdata, true); 1361 1362 sdata->vif.bss_conf.enable_beacon = false; 1363 sdata->beacon_rate_set = false; 1364 sdata->vif.bss_conf.ssid_len = 0; 1365 clear_bit(SDATA_STATE_OFFCHANNEL_BEACON_STOPPED, &sdata->state); 1366 ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_BEACON_ENABLED); 1367 1368 if (sdata->wdev.cac_started) { 1369 chandef = sdata->vif.bss_conf.chandef; 1370 cancel_delayed_work_sync(&sdata->dfs_cac_timer_work); 1371 cfg80211_cac_event(sdata->dev, &chandef, 1372 NL80211_RADAR_CAC_ABORTED, 1373 GFP_KERNEL); 1374 } 1375 1376 drv_stop_ap(sdata->local, sdata); 1377 1378 /* free all potentially still buffered bcast frames */ 1379 local->total_ps_buffered -= skb_queue_len(&sdata->u.ap.ps.bc_buf); 1380 ieee80211_purge_tx_queue(&local->hw, &sdata->u.ap.ps.bc_buf); 1381 1382 mutex_lock(&local->mtx); 1383 ieee80211_vif_copy_chanctx_to_vlans(sdata, true); 1384 ieee80211_vif_release_channel(sdata); 1385 mutex_unlock(&local->mtx); 1386 1387 return 0; 1388 } 1389 1390 static int sta_apply_auth_flags(struct ieee80211_local *local, 1391 struct sta_info *sta, 1392 u32 mask, u32 set) 1393 { 1394 int ret; 1395 1396 if (mask & BIT(NL80211_STA_FLAG_AUTHENTICATED) && 1397 set & BIT(NL80211_STA_FLAG_AUTHENTICATED) && 1398 !test_sta_flag(sta, WLAN_STA_AUTH)) { 1399 ret = sta_info_move_state(sta, IEEE80211_STA_AUTH); 1400 if (ret) 1401 return ret; 1402 } 1403 1404 if (mask & BIT(NL80211_STA_FLAG_ASSOCIATED) && 1405 set & BIT(NL80211_STA_FLAG_ASSOCIATED) && 1406 !test_sta_flag(sta, WLAN_STA_ASSOC)) { 1407 /* 1408 * When peer becomes associated, init rate control as 1409 * well. Some drivers require rate control initialized 1410 * before drv_sta_state() is called. 1411 */ 1412 if (!test_sta_flag(sta, WLAN_STA_RATE_CONTROL)) 1413 rate_control_rate_init(sta); 1414 1415 ret = sta_info_move_state(sta, IEEE80211_STA_ASSOC); 1416 if (ret) 1417 return ret; 1418 } 1419 1420 if (mask & BIT(NL80211_STA_FLAG_AUTHORIZED)) { 1421 if (set & BIT(NL80211_STA_FLAG_AUTHORIZED)) 1422 ret = sta_info_move_state(sta, IEEE80211_STA_AUTHORIZED); 1423 else if (test_sta_flag(sta, WLAN_STA_AUTHORIZED)) 1424 ret = sta_info_move_state(sta, IEEE80211_STA_ASSOC); 1425 else 1426 ret = 0; 1427 if (ret) 1428 return ret; 1429 } 1430 1431 if (mask & BIT(NL80211_STA_FLAG_ASSOCIATED) && 1432 !(set & BIT(NL80211_STA_FLAG_ASSOCIATED)) && 1433 test_sta_flag(sta, WLAN_STA_ASSOC)) { 1434 ret = sta_info_move_state(sta, IEEE80211_STA_AUTH); 1435 if (ret) 1436 return ret; 1437 } 1438 1439 if (mask & BIT(NL80211_STA_FLAG_AUTHENTICATED) && 1440 !(set & BIT(NL80211_STA_FLAG_AUTHENTICATED)) && 1441 test_sta_flag(sta, WLAN_STA_AUTH)) { 1442 ret = sta_info_move_state(sta, IEEE80211_STA_NONE); 1443 if (ret) 1444 return ret; 1445 } 1446 1447 return 0; 1448 } 1449 1450 static void sta_apply_mesh_params(struct ieee80211_local *local, 1451 struct sta_info *sta, 1452 struct station_parameters *params) 1453 { 1454 #ifdef CONFIG_MAC80211_MESH 1455 struct ieee80211_sub_if_data *sdata = sta->sdata; 1456 u32 changed = 0; 1457 1458 if (params->sta_modify_mask & STATION_PARAM_APPLY_PLINK_STATE) { 1459 switch (params->plink_state) { 1460 case NL80211_PLINK_ESTAB: 1461 if (sta->mesh->plink_state != NL80211_PLINK_ESTAB) 1462 changed = mesh_plink_inc_estab_count(sdata); 1463 sta->mesh->plink_state = params->plink_state; 1464 sta->mesh->aid = params->peer_aid; 1465 1466 ieee80211_mps_sta_status_update(sta); 1467 changed |= ieee80211_mps_set_sta_local_pm(sta, 1468 sdata->u.mesh.mshcfg.power_mode); 1469 1470 ewma_mesh_tx_rate_avg_init(&sta->mesh->tx_rate_avg); 1471 /* init at low value */ 1472 ewma_mesh_tx_rate_avg_add(&sta->mesh->tx_rate_avg, 10); 1473 1474 break; 1475 case NL80211_PLINK_LISTEN: 1476 case NL80211_PLINK_BLOCKED: 1477 case NL80211_PLINK_OPN_SNT: 1478 case NL80211_PLINK_OPN_RCVD: 1479 case NL80211_PLINK_CNF_RCVD: 1480 case NL80211_PLINK_HOLDING: 1481 if (sta->mesh->plink_state == NL80211_PLINK_ESTAB) 1482 changed = mesh_plink_dec_estab_count(sdata); 1483 sta->mesh->plink_state = params->plink_state; 1484 1485 ieee80211_mps_sta_status_update(sta); 1486 changed |= ieee80211_mps_set_sta_local_pm(sta, 1487 NL80211_MESH_POWER_UNKNOWN); 1488 break; 1489 default: 1490 /* nothing */ 1491 break; 1492 } 1493 } 1494 1495 switch (params->plink_action) { 1496 case NL80211_PLINK_ACTION_NO_ACTION: 1497 /* nothing */ 1498 break; 1499 case NL80211_PLINK_ACTION_OPEN: 1500 changed |= mesh_plink_open(sta); 1501 break; 1502 case NL80211_PLINK_ACTION_BLOCK: 1503 changed |= mesh_plink_block(sta); 1504 break; 1505 } 1506 1507 if (params->local_pm) 1508 changed |= ieee80211_mps_set_sta_local_pm(sta, 1509 params->local_pm); 1510 1511 ieee80211_mbss_info_change_notify(sdata, changed); 1512 #endif 1513 } 1514 1515 static void sta_apply_airtime_params(struct ieee80211_local *local, 1516 struct sta_info *sta, 1517 struct station_parameters *params) 1518 { 1519 u8 ac; 1520 1521 for (ac = 0; ac < IEEE80211_NUM_ACS; ac++) { 1522 struct airtime_sched_info *air_sched = &local->airtime[ac]; 1523 struct airtime_info *air_info = &sta->airtime[ac]; 1524 struct txq_info *txqi; 1525 u8 tid; 1526 1527 spin_lock_bh(&air_sched->lock); 1528 for (tid = 0; tid < IEEE80211_NUM_TIDS + 1; tid++) { 1529 if (air_info->weight == params->airtime_weight || 1530 !sta->sta.txq[tid] || 1531 ac != ieee80211_ac_from_tid(tid)) 1532 continue; 1533 1534 airtime_weight_set(air_info, params->airtime_weight); 1535 1536 txqi = to_txq_info(sta->sta.txq[tid]); 1537 if (RB_EMPTY_NODE(&txqi->schedule_order)) 1538 continue; 1539 1540 ieee80211_update_airtime_weight(local, air_sched, 1541 0, true); 1542 } 1543 spin_unlock_bh(&air_sched->lock); 1544 } 1545 } 1546 1547 static int sta_apply_parameters(struct ieee80211_local *local, 1548 struct sta_info *sta, 1549 struct station_parameters *params) 1550 { 1551 int ret = 0; 1552 struct ieee80211_supported_band *sband; 1553 struct ieee80211_sub_if_data *sdata = sta->sdata; 1554 u32 mask, set; 1555 1556 sband = ieee80211_get_sband(sdata); 1557 if (!sband) 1558 return -EINVAL; 1559 1560 mask = params->sta_flags_mask; 1561 set = params->sta_flags_set; 1562 1563 if (ieee80211_vif_is_mesh(&sdata->vif)) { 1564 /* 1565 * In mesh mode, ASSOCIATED isn't part of the nl80211 1566 * API but must follow AUTHENTICATED for driver state. 1567 */ 1568 if (mask & BIT(NL80211_STA_FLAG_AUTHENTICATED)) 1569 mask |= BIT(NL80211_STA_FLAG_ASSOCIATED); 1570 if (set & BIT(NL80211_STA_FLAG_AUTHENTICATED)) 1571 set |= BIT(NL80211_STA_FLAG_ASSOCIATED); 1572 } else if (test_sta_flag(sta, WLAN_STA_TDLS_PEER)) { 1573 /* 1574 * TDLS -- everything follows authorized, but 1575 * only becoming authorized is possible, not 1576 * going back 1577 */ 1578 if (set & BIT(NL80211_STA_FLAG_AUTHORIZED)) { 1579 set |= BIT(NL80211_STA_FLAG_AUTHENTICATED) | 1580 BIT(NL80211_STA_FLAG_ASSOCIATED); 1581 mask |= BIT(NL80211_STA_FLAG_AUTHENTICATED) | 1582 BIT(NL80211_STA_FLAG_ASSOCIATED); 1583 } 1584 } 1585 1586 if (mask & BIT(NL80211_STA_FLAG_WME) && 1587 local->hw.queues >= IEEE80211_NUM_ACS) 1588 sta->sta.wme = set & BIT(NL80211_STA_FLAG_WME); 1589 1590 /* auth flags will be set later for TDLS, 1591 * and for unassociated stations that move to associated */ 1592 if (!test_sta_flag(sta, WLAN_STA_TDLS_PEER) && 1593 !((mask & BIT(NL80211_STA_FLAG_ASSOCIATED)) && 1594 (set & BIT(NL80211_STA_FLAG_ASSOCIATED)))) { 1595 ret = sta_apply_auth_flags(local, sta, mask, set); 1596 if (ret) 1597 return ret; 1598 } 1599 1600 if (mask & BIT(NL80211_STA_FLAG_SHORT_PREAMBLE)) { 1601 if (set & BIT(NL80211_STA_FLAG_SHORT_PREAMBLE)) 1602 set_sta_flag(sta, WLAN_STA_SHORT_PREAMBLE); 1603 else 1604 clear_sta_flag(sta, WLAN_STA_SHORT_PREAMBLE); 1605 } 1606 1607 if (mask & BIT(NL80211_STA_FLAG_MFP)) { 1608 sta->sta.mfp = !!(set & BIT(NL80211_STA_FLAG_MFP)); 1609 if (set & BIT(NL80211_STA_FLAG_MFP)) 1610 set_sta_flag(sta, WLAN_STA_MFP); 1611 else 1612 clear_sta_flag(sta, WLAN_STA_MFP); 1613 } 1614 1615 if (mask & BIT(NL80211_STA_FLAG_TDLS_PEER)) { 1616 if (set & BIT(NL80211_STA_FLAG_TDLS_PEER)) 1617 set_sta_flag(sta, WLAN_STA_TDLS_PEER); 1618 else 1619 clear_sta_flag(sta, WLAN_STA_TDLS_PEER); 1620 } 1621 1622 /* mark TDLS channel switch support, if the AP allows it */ 1623 if (test_sta_flag(sta, WLAN_STA_TDLS_PEER) && 1624 !sdata->u.mgd.tdls_chan_switch_prohibited && 1625 params->ext_capab_len >= 4 && 1626 params->ext_capab[3] & WLAN_EXT_CAPA4_TDLS_CHAN_SWITCH) 1627 set_sta_flag(sta, WLAN_STA_TDLS_CHAN_SWITCH); 1628 1629 if (test_sta_flag(sta, WLAN_STA_TDLS_PEER) && 1630 !sdata->u.mgd.tdls_wider_bw_prohibited && 1631 ieee80211_hw_check(&local->hw, TDLS_WIDER_BW) && 1632 params->ext_capab_len >= 8 && 1633 params->ext_capab[7] & WLAN_EXT_CAPA8_TDLS_WIDE_BW_ENABLED) 1634 set_sta_flag(sta, WLAN_STA_TDLS_WIDER_BW); 1635 1636 if (params->sta_modify_mask & STATION_PARAM_APPLY_UAPSD) { 1637 sta->sta.uapsd_queues = params->uapsd_queues; 1638 sta->sta.max_sp = params->max_sp; 1639 } 1640 1641 /* The sender might not have sent the last bit, consider it to be 0 */ 1642 if (params->ext_capab_len >= 8) { 1643 u8 val = (params->ext_capab[7] & 1644 WLAN_EXT_CAPA8_MAX_MSDU_IN_AMSDU_LSB) >> 7; 1645 1646 /* we did get all the bits, take the MSB as well */ 1647 if (params->ext_capab_len >= 9) { 1648 u8 val_msb = params->ext_capab[8] & 1649 WLAN_EXT_CAPA9_MAX_MSDU_IN_AMSDU_MSB; 1650 val_msb <<= 1; 1651 val |= val_msb; 1652 } 1653 1654 switch (val) { 1655 case 1: 1656 sta->sta.max_amsdu_subframes = 32; 1657 break; 1658 case 2: 1659 sta->sta.max_amsdu_subframes = 16; 1660 break; 1661 case 3: 1662 sta->sta.max_amsdu_subframes = 8; 1663 break; 1664 default: 1665 sta->sta.max_amsdu_subframes = 0; 1666 } 1667 } 1668 1669 /* 1670 * cfg80211 validates this (1-2007) and allows setting the AID 1671 * only when creating a new station entry 1672 */ 1673 if (params->aid) 1674 sta->sta.aid = params->aid; 1675 1676 /* 1677 * Some of the following updates would be racy if called on an 1678 * existing station, via ieee80211_change_station(). However, 1679 * all such changes are rejected by cfg80211 except for updates 1680 * changing the supported rates on an existing but not yet used 1681 * TDLS peer. 1682 */ 1683 1684 if (params->listen_interval >= 0) 1685 sta->listen_interval = params->listen_interval; 1686 1687 if (params->sta_modify_mask & STATION_PARAM_APPLY_STA_TXPOWER) { 1688 sta->sta.txpwr.type = params->txpwr.type; 1689 if (params->txpwr.type == NL80211_TX_POWER_LIMITED) 1690 sta->sta.txpwr.power = params->txpwr.power; 1691 ret = drv_sta_set_txpwr(local, sdata, sta); 1692 if (ret) 1693 return ret; 1694 } 1695 1696 if (params->supported_rates && params->supported_rates_len) { 1697 ieee80211_parse_bitrates(&sdata->vif.bss_conf.chandef, 1698 sband, params->supported_rates, 1699 params->supported_rates_len, 1700 &sta->sta.supp_rates[sband->band]); 1701 } 1702 1703 if (params->ht_capa) 1704 ieee80211_ht_cap_ie_to_sta_ht_cap(sdata, sband, 1705 params->ht_capa, sta); 1706 1707 /* VHT can override some HT caps such as the A-MSDU max length */ 1708 if (params->vht_capa) 1709 ieee80211_vht_cap_ie_to_sta_vht_cap(sdata, sband, 1710 params->vht_capa, sta); 1711 1712 if (params->he_capa) 1713 ieee80211_he_cap_ie_to_sta_he_cap(sdata, sband, 1714 (void *)params->he_capa, 1715 params->he_capa_len, 1716 (void *)params->he_6ghz_capa, 1717 sta); 1718 1719 if (params->opmode_notif_used) { 1720 /* returned value is only needed for rc update, but the 1721 * rc isn't initialized here yet, so ignore it 1722 */ 1723 __ieee80211_vht_handle_opmode(sdata, sta, params->opmode_notif, 1724 sband->band); 1725 } 1726 1727 if (params->support_p2p_ps >= 0) 1728 sta->sta.support_p2p_ps = params->support_p2p_ps; 1729 1730 if (ieee80211_vif_is_mesh(&sdata->vif)) 1731 sta_apply_mesh_params(local, sta, params); 1732 1733 if (params->airtime_weight) 1734 sta_apply_airtime_params(local, sta, params); 1735 1736 1737 /* set the STA state after all sta info from usermode has been set */ 1738 if (test_sta_flag(sta, WLAN_STA_TDLS_PEER) || 1739 set & BIT(NL80211_STA_FLAG_ASSOCIATED)) { 1740 ret = sta_apply_auth_flags(local, sta, mask, set); 1741 if (ret) 1742 return ret; 1743 } 1744 1745 return 0; 1746 } 1747 1748 static int ieee80211_add_station(struct wiphy *wiphy, struct net_device *dev, 1749 const u8 *mac, 1750 struct station_parameters *params) 1751 { 1752 struct ieee80211_local *local = wiphy_priv(wiphy); 1753 struct sta_info *sta; 1754 struct ieee80211_sub_if_data *sdata; 1755 int err; 1756 1757 if (params->vlan) { 1758 sdata = IEEE80211_DEV_TO_SUB_IF(params->vlan); 1759 1760 if (sdata->vif.type != NL80211_IFTYPE_AP_VLAN && 1761 sdata->vif.type != NL80211_IFTYPE_AP) 1762 return -EINVAL; 1763 } else 1764 sdata = IEEE80211_DEV_TO_SUB_IF(dev); 1765 1766 if (ether_addr_equal(mac, sdata->vif.addr)) 1767 return -EINVAL; 1768 1769 if (!is_valid_ether_addr(mac)) 1770 return -EINVAL; 1771 1772 if (params->sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER) && 1773 sdata->vif.type == NL80211_IFTYPE_STATION && 1774 !sdata->u.mgd.associated) 1775 return -EINVAL; 1776 1777 sta = sta_info_alloc(sdata, mac, GFP_KERNEL); 1778 if (!sta) 1779 return -ENOMEM; 1780 1781 if (params->sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)) 1782 sta->sta.tdls = true; 1783 1784 err = sta_apply_parameters(local, sta, params); 1785 if (err) { 1786 sta_info_free(local, sta); 1787 return err; 1788 } 1789 1790 /* 1791 * for TDLS and for unassociated station, rate control should be 1792 * initialized only when rates are known and station is marked 1793 * authorized/associated 1794 */ 1795 if (!test_sta_flag(sta, WLAN_STA_TDLS_PEER) && 1796 test_sta_flag(sta, WLAN_STA_ASSOC)) 1797 rate_control_rate_init(sta); 1798 1799 return sta_info_insert(sta); 1800 } 1801 1802 static int ieee80211_del_station(struct wiphy *wiphy, struct net_device *dev, 1803 struct station_del_parameters *params) 1804 { 1805 struct ieee80211_sub_if_data *sdata; 1806 1807 sdata = IEEE80211_DEV_TO_SUB_IF(dev); 1808 1809 if (params->mac) 1810 return sta_info_destroy_addr_bss(sdata, params->mac); 1811 1812 sta_info_flush(sdata); 1813 return 0; 1814 } 1815 1816 static int ieee80211_change_station(struct wiphy *wiphy, 1817 struct net_device *dev, const u8 *mac, 1818 struct station_parameters *params) 1819 { 1820 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 1821 struct ieee80211_local *local = wiphy_priv(wiphy); 1822 struct sta_info *sta; 1823 struct ieee80211_sub_if_data *vlansdata; 1824 enum cfg80211_station_type statype; 1825 int err; 1826 1827 mutex_lock(&local->sta_mtx); 1828 1829 sta = sta_info_get_bss(sdata, mac); 1830 if (!sta) { 1831 err = -ENOENT; 1832 goto out_err; 1833 } 1834 1835 switch (sdata->vif.type) { 1836 case NL80211_IFTYPE_MESH_POINT: 1837 if (sdata->u.mesh.user_mpm) 1838 statype = CFG80211_STA_MESH_PEER_USER; 1839 else 1840 statype = CFG80211_STA_MESH_PEER_KERNEL; 1841 break; 1842 case NL80211_IFTYPE_ADHOC: 1843 statype = CFG80211_STA_IBSS; 1844 break; 1845 case NL80211_IFTYPE_STATION: 1846 if (!test_sta_flag(sta, WLAN_STA_TDLS_PEER)) { 1847 statype = CFG80211_STA_AP_STA; 1848 break; 1849 } 1850 if (test_sta_flag(sta, WLAN_STA_AUTHORIZED)) 1851 statype = CFG80211_STA_TDLS_PEER_ACTIVE; 1852 else 1853 statype = CFG80211_STA_TDLS_PEER_SETUP; 1854 break; 1855 case NL80211_IFTYPE_AP: 1856 case NL80211_IFTYPE_AP_VLAN: 1857 if (test_sta_flag(sta, WLAN_STA_ASSOC)) 1858 statype = CFG80211_STA_AP_CLIENT; 1859 else 1860 statype = CFG80211_STA_AP_CLIENT_UNASSOC; 1861 break; 1862 default: 1863 err = -EOPNOTSUPP; 1864 goto out_err; 1865 } 1866 1867 err = cfg80211_check_station_change(wiphy, params, statype); 1868 if (err) 1869 goto out_err; 1870 1871 if (params->vlan && params->vlan != sta->sdata->dev) { 1872 vlansdata = IEEE80211_DEV_TO_SUB_IF(params->vlan); 1873 1874 if (params->vlan->ieee80211_ptr->use_4addr) { 1875 if (vlansdata->u.vlan.sta) { 1876 err = -EBUSY; 1877 goto out_err; 1878 } 1879 1880 rcu_assign_pointer(vlansdata->u.vlan.sta, sta); 1881 __ieee80211_check_fast_rx_iface(vlansdata); 1882 drv_sta_set_4addr(local, sta->sdata, &sta->sta, true); 1883 } 1884 1885 if (sta->sdata->vif.type == NL80211_IFTYPE_AP_VLAN && 1886 sta->sdata->u.vlan.sta) { 1887 ieee80211_clear_fast_rx(sta); 1888 RCU_INIT_POINTER(sta->sdata->u.vlan.sta, NULL); 1889 } 1890 1891 if (test_sta_flag(sta, WLAN_STA_AUTHORIZED)) 1892 ieee80211_vif_dec_num_mcast(sta->sdata); 1893 1894 sta->sdata = vlansdata; 1895 ieee80211_check_fast_xmit(sta); 1896 1897 if (test_sta_flag(sta, WLAN_STA_AUTHORIZED)) { 1898 ieee80211_vif_inc_num_mcast(sta->sdata); 1899 cfg80211_send_layer2_update(sta->sdata->dev, 1900 sta->sta.addr); 1901 } 1902 } 1903 1904 err = sta_apply_parameters(local, sta, params); 1905 if (err) 1906 goto out_err; 1907 1908 mutex_unlock(&local->sta_mtx); 1909 1910 if (sdata->vif.type == NL80211_IFTYPE_STATION && 1911 params->sta_flags_mask & BIT(NL80211_STA_FLAG_AUTHORIZED)) { 1912 ieee80211_recalc_ps(local); 1913 ieee80211_recalc_ps_vif(sdata); 1914 } 1915 1916 return 0; 1917 out_err: 1918 mutex_unlock(&local->sta_mtx); 1919 return err; 1920 } 1921 1922 #ifdef CONFIG_MAC80211_MESH 1923 static int ieee80211_add_mpath(struct wiphy *wiphy, struct net_device *dev, 1924 const u8 *dst, const u8 *next_hop) 1925 { 1926 struct ieee80211_sub_if_data *sdata; 1927 struct mesh_path *mpath; 1928 struct sta_info *sta; 1929 1930 sdata = IEEE80211_DEV_TO_SUB_IF(dev); 1931 1932 rcu_read_lock(); 1933 sta = sta_info_get(sdata, next_hop); 1934 if (!sta) { 1935 rcu_read_unlock(); 1936 return -ENOENT; 1937 } 1938 1939 mpath = mesh_path_add(sdata, dst); 1940 if (IS_ERR(mpath)) { 1941 rcu_read_unlock(); 1942 return PTR_ERR(mpath); 1943 } 1944 1945 mesh_path_fix_nexthop(mpath, sta); 1946 1947 rcu_read_unlock(); 1948 return 0; 1949 } 1950 1951 static int ieee80211_del_mpath(struct wiphy *wiphy, struct net_device *dev, 1952 const u8 *dst) 1953 { 1954 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 1955 1956 if (dst) 1957 return mesh_path_del(sdata, dst); 1958 1959 mesh_path_flush_by_iface(sdata); 1960 return 0; 1961 } 1962 1963 static int ieee80211_change_mpath(struct wiphy *wiphy, struct net_device *dev, 1964 const u8 *dst, const u8 *next_hop) 1965 { 1966 struct ieee80211_sub_if_data *sdata; 1967 struct mesh_path *mpath; 1968 struct sta_info *sta; 1969 1970 sdata = IEEE80211_DEV_TO_SUB_IF(dev); 1971 1972 rcu_read_lock(); 1973 1974 sta = sta_info_get(sdata, next_hop); 1975 if (!sta) { 1976 rcu_read_unlock(); 1977 return -ENOENT; 1978 } 1979 1980 mpath = mesh_path_lookup(sdata, dst); 1981 if (!mpath) { 1982 rcu_read_unlock(); 1983 return -ENOENT; 1984 } 1985 1986 mesh_path_fix_nexthop(mpath, sta); 1987 1988 rcu_read_unlock(); 1989 return 0; 1990 } 1991 1992 static void mpath_set_pinfo(struct mesh_path *mpath, u8 *next_hop, 1993 struct mpath_info *pinfo) 1994 { 1995 struct sta_info *next_hop_sta = rcu_dereference(mpath->next_hop); 1996 1997 if (next_hop_sta) 1998 memcpy(next_hop, next_hop_sta->sta.addr, ETH_ALEN); 1999 else 2000 eth_zero_addr(next_hop); 2001 2002 memset(pinfo, 0, sizeof(*pinfo)); 2003 2004 pinfo->generation = mpath->sdata->u.mesh.mesh_paths_generation; 2005 2006 pinfo->filled = MPATH_INFO_FRAME_QLEN | 2007 MPATH_INFO_SN | 2008 MPATH_INFO_METRIC | 2009 MPATH_INFO_EXPTIME | 2010 MPATH_INFO_DISCOVERY_TIMEOUT | 2011 MPATH_INFO_DISCOVERY_RETRIES | 2012 MPATH_INFO_FLAGS | 2013 MPATH_INFO_HOP_COUNT | 2014 MPATH_INFO_PATH_CHANGE; 2015 2016 pinfo->frame_qlen = mpath->frame_queue.qlen; 2017 pinfo->sn = mpath->sn; 2018 pinfo->metric = mpath->metric; 2019 if (time_before(jiffies, mpath->exp_time)) 2020 pinfo->exptime = jiffies_to_msecs(mpath->exp_time - jiffies); 2021 pinfo->discovery_timeout = 2022 jiffies_to_msecs(mpath->discovery_timeout); 2023 pinfo->discovery_retries = mpath->discovery_retries; 2024 if (mpath->flags & MESH_PATH_ACTIVE) 2025 pinfo->flags |= NL80211_MPATH_FLAG_ACTIVE; 2026 if (mpath->flags & MESH_PATH_RESOLVING) 2027 pinfo->flags |= NL80211_MPATH_FLAG_RESOLVING; 2028 if (mpath->flags & MESH_PATH_SN_VALID) 2029 pinfo->flags |= NL80211_MPATH_FLAG_SN_VALID; 2030 if (mpath->flags & MESH_PATH_FIXED) 2031 pinfo->flags |= NL80211_MPATH_FLAG_FIXED; 2032 if (mpath->flags & MESH_PATH_RESOLVED) 2033 pinfo->flags |= NL80211_MPATH_FLAG_RESOLVED; 2034 pinfo->hop_count = mpath->hop_count; 2035 pinfo->path_change_count = mpath->path_change_count; 2036 } 2037 2038 static int ieee80211_get_mpath(struct wiphy *wiphy, struct net_device *dev, 2039 u8 *dst, u8 *next_hop, struct mpath_info *pinfo) 2040 2041 { 2042 struct ieee80211_sub_if_data *sdata; 2043 struct mesh_path *mpath; 2044 2045 sdata = IEEE80211_DEV_TO_SUB_IF(dev); 2046 2047 rcu_read_lock(); 2048 mpath = mesh_path_lookup(sdata, dst); 2049 if (!mpath) { 2050 rcu_read_unlock(); 2051 return -ENOENT; 2052 } 2053 memcpy(dst, mpath->dst, ETH_ALEN); 2054 mpath_set_pinfo(mpath, next_hop, pinfo); 2055 rcu_read_unlock(); 2056 return 0; 2057 } 2058 2059 static int ieee80211_dump_mpath(struct wiphy *wiphy, struct net_device *dev, 2060 int idx, u8 *dst, u8 *next_hop, 2061 struct mpath_info *pinfo) 2062 { 2063 struct ieee80211_sub_if_data *sdata; 2064 struct mesh_path *mpath; 2065 2066 sdata = IEEE80211_DEV_TO_SUB_IF(dev); 2067 2068 rcu_read_lock(); 2069 mpath = mesh_path_lookup_by_idx(sdata, idx); 2070 if (!mpath) { 2071 rcu_read_unlock(); 2072 return -ENOENT; 2073 } 2074 memcpy(dst, mpath->dst, ETH_ALEN); 2075 mpath_set_pinfo(mpath, next_hop, pinfo); 2076 rcu_read_unlock(); 2077 return 0; 2078 } 2079 2080 static void mpp_set_pinfo(struct mesh_path *mpath, u8 *mpp, 2081 struct mpath_info *pinfo) 2082 { 2083 memset(pinfo, 0, sizeof(*pinfo)); 2084 memcpy(mpp, mpath->mpp, ETH_ALEN); 2085 2086 pinfo->generation = mpath->sdata->u.mesh.mpp_paths_generation; 2087 } 2088 2089 static int ieee80211_get_mpp(struct wiphy *wiphy, struct net_device *dev, 2090 u8 *dst, u8 *mpp, struct mpath_info *pinfo) 2091 2092 { 2093 struct ieee80211_sub_if_data *sdata; 2094 struct mesh_path *mpath; 2095 2096 sdata = IEEE80211_DEV_TO_SUB_IF(dev); 2097 2098 rcu_read_lock(); 2099 mpath = mpp_path_lookup(sdata, dst); 2100 if (!mpath) { 2101 rcu_read_unlock(); 2102 return -ENOENT; 2103 } 2104 memcpy(dst, mpath->dst, ETH_ALEN); 2105 mpp_set_pinfo(mpath, mpp, pinfo); 2106 rcu_read_unlock(); 2107 return 0; 2108 } 2109 2110 static int ieee80211_dump_mpp(struct wiphy *wiphy, struct net_device *dev, 2111 int idx, u8 *dst, u8 *mpp, 2112 struct mpath_info *pinfo) 2113 { 2114 struct ieee80211_sub_if_data *sdata; 2115 struct mesh_path *mpath; 2116 2117 sdata = IEEE80211_DEV_TO_SUB_IF(dev); 2118 2119 rcu_read_lock(); 2120 mpath = mpp_path_lookup_by_idx(sdata, idx); 2121 if (!mpath) { 2122 rcu_read_unlock(); 2123 return -ENOENT; 2124 } 2125 memcpy(dst, mpath->dst, ETH_ALEN); 2126 mpp_set_pinfo(mpath, mpp, pinfo); 2127 rcu_read_unlock(); 2128 return 0; 2129 } 2130 2131 static int ieee80211_get_mesh_config(struct wiphy *wiphy, 2132 struct net_device *dev, 2133 struct mesh_config *conf) 2134 { 2135 struct ieee80211_sub_if_data *sdata; 2136 sdata = IEEE80211_DEV_TO_SUB_IF(dev); 2137 2138 memcpy(conf, &(sdata->u.mesh.mshcfg), sizeof(struct mesh_config)); 2139 return 0; 2140 } 2141 2142 static inline bool _chg_mesh_attr(enum nl80211_meshconf_params parm, u32 mask) 2143 { 2144 return (mask >> (parm-1)) & 0x1; 2145 } 2146 2147 static int copy_mesh_setup(struct ieee80211_if_mesh *ifmsh, 2148 const struct mesh_setup *setup) 2149 { 2150 u8 *new_ie; 2151 const u8 *old_ie; 2152 struct ieee80211_sub_if_data *sdata = container_of(ifmsh, 2153 struct ieee80211_sub_if_data, u.mesh); 2154 int i; 2155 2156 /* allocate information elements */ 2157 new_ie = NULL; 2158 old_ie = ifmsh->ie; 2159 2160 if (setup->ie_len) { 2161 new_ie = kmemdup(setup->ie, setup->ie_len, 2162 GFP_KERNEL); 2163 if (!new_ie) 2164 return -ENOMEM; 2165 } 2166 ifmsh->ie_len = setup->ie_len; 2167 ifmsh->ie = new_ie; 2168 kfree(old_ie); 2169 2170 /* now copy the rest of the setup parameters */ 2171 ifmsh->mesh_id_len = setup->mesh_id_len; 2172 memcpy(ifmsh->mesh_id, setup->mesh_id, ifmsh->mesh_id_len); 2173 ifmsh->mesh_sp_id = setup->sync_method; 2174 ifmsh->mesh_pp_id = setup->path_sel_proto; 2175 ifmsh->mesh_pm_id = setup->path_metric; 2176 ifmsh->user_mpm = setup->user_mpm; 2177 ifmsh->mesh_auth_id = setup->auth_id; 2178 ifmsh->security = IEEE80211_MESH_SEC_NONE; 2179 ifmsh->userspace_handles_dfs = setup->userspace_handles_dfs; 2180 if (setup->is_authenticated) 2181 ifmsh->security |= IEEE80211_MESH_SEC_AUTHED; 2182 if (setup->is_secure) 2183 ifmsh->security |= IEEE80211_MESH_SEC_SECURED; 2184 2185 /* mcast rate setting in Mesh Node */ 2186 memcpy(sdata->vif.bss_conf.mcast_rate, setup->mcast_rate, 2187 sizeof(setup->mcast_rate)); 2188 sdata->vif.bss_conf.basic_rates = setup->basic_rates; 2189 2190 sdata->vif.bss_conf.beacon_int = setup->beacon_interval; 2191 sdata->vif.bss_conf.dtim_period = setup->dtim_period; 2192 2193 sdata->beacon_rate_set = false; 2194 if (wiphy_ext_feature_isset(sdata->local->hw.wiphy, 2195 NL80211_EXT_FEATURE_BEACON_RATE_LEGACY)) { 2196 for (i = 0; i < NUM_NL80211_BANDS; i++) { 2197 sdata->beacon_rateidx_mask[i] = 2198 setup->beacon_rate.control[i].legacy; 2199 if (sdata->beacon_rateidx_mask[i]) 2200 sdata->beacon_rate_set = true; 2201 } 2202 } 2203 2204 return 0; 2205 } 2206 2207 static int ieee80211_update_mesh_config(struct wiphy *wiphy, 2208 struct net_device *dev, u32 mask, 2209 const struct mesh_config *nconf) 2210 { 2211 struct mesh_config *conf; 2212 struct ieee80211_sub_if_data *sdata; 2213 struct ieee80211_if_mesh *ifmsh; 2214 2215 sdata = IEEE80211_DEV_TO_SUB_IF(dev); 2216 ifmsh = &sdata->u.mesh; 2217 2218 /* Set the config options which we are interested in setting */ 2219 conf = &(sdata->u.mesh.mshcfg); 2220 if (_chg_mesh_attr(NL80211_MESHCONF_RETRY_TIMEOUT, mask)) 2221 conf->dot11MeshRetryTimeout = nconf->dot11MeshRetryTimeout; 2222 if (_chg_mesh_attr(NL80211_MESHCONF_CONFIRM_TIMEOUT, mask)) 2223 conf->dot11MeshConfirmTimeout = nconf->dot11MeshConfirmTimeout; 2224 if (_chg_mesh_attr(NL80211_MESHCONF_HOLDING_TIMEOUT, mask)) 2225 conf->dot11MeshHoldingTimeout = nconf->dot11MeshHoldingTimeout; 2226 if (_chg_mesh_attr(NL80211_MESHCONF_MAX_PEER_LINKS, mask)) 2227 conf->dot11MeshMaxPeerLinks = nconf->dot11MeshMaxPeerLinks; 2228 if (_chg_mesh_attr(NL80211_MESHCONF_MAX_RETRIES, mask)) 2229 conf->dot11MeshMaxRetries = nconf->dot11MeshMaxRetries; 2230 if (_chg_mesh_attr(NL80211_MESHCONF_TTL, mask)) 2231 conf->dot11MeshTTL = nconf->dot11MeshTTL; 2232 if (_chg_mesh_attr(NL80211_MESHCONF_ELEMENT_TTL, mask)) 2233 conf->element_ttl = nconf->element_ttl; 2234 if (_chg_mesh_attr(NL80211_MESHCONF_AUTO_OPEN_PLINKS, mask)) { 2235 if (ifmsh->user_mpm) 2236 return -EBUSY; 2237 conf->auto_open_plinks = nconf->auto_open_plinks; 2238 } 2239 if (_chg_mesh_attr(NL80211_MESHCONF_SYNC_OFFSET_MAX_NEIGHBOR, mask)) 2240 conf->dot11MeshNbrOffsetMaxNeighbor = 2241 nconf->dot11MeshNbrOffsetMaxNeighbor; 2242 if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES, mask)) 2243 conf->dot11MeshHWMPmaxPREQretries = 2244 nconf->dot11MeshHWMPmaxPREQretries; 2245 if (_chg_mesh_attr(NL80211_MESHCONF_PATH_REFRESH_TIME, mask)) 2246 conf->path_refresh_time = nconf->path_refresh_time; 2247 if (_chg_mesh_attr(NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT, mask)) 2248 conf->min_discovery_timeout = nconf->min_discovery_timeout; 2249 if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT, mask)) 2250 conf->dot11MeshHWMPactivePathTimeout = 2251 nconf->dot11MeshHWMPactivePathTimeout; 2252 if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL, mask)) 2253 conf->dot11MeshHWMPpreqMinInterval = 2254 nconf->dot11MeshHWMPpreqMinInterval; 2255 if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_PERR_MIN_INTERVAL, mask)) 2256 conf->dot11MeshHWMPperrMinInterval = 2257 nconf->dot11MeshHWMPperrMinInterval; 2258 if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME, 2259 mask)) 2260 conf->dot11MeshHWMPnetDiameterTraversalTime = 2261 nconf->dot11MeshHWMPnetDiameterTraversalTime; 2262 if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_ROOTMODE, mask)) { 2263 conf->dot11MeshHWMPRootMode = nconf->dot11MeshHWMPRootMode; 2264 ieee80211_mesh_root_setup(ifmsh); 2265 } 2266 if (_chg_mesh_attr(NL80211_MESHCONF_GATE_ANNOUNCEMENTS, mask)) { 2267 /* our current gate announcement implementation rides on root 2268 * announcements, so require this ifmsh to also be a root node 2269 * */ 2270 if (nconf->dot11MeshGateAnnouncementProtocol && 2271 !(conf->dot11MeshHWMPRootMode > IEEE80211_ROOTMODE_ROOT)) { 2272 conf->dot11MeshHWMPRootMode = IEEE80211_PROACTIVE_RANN; 2273 ieee80211_mesh_root_setup(ifmsh); 2274 } 2275 conf->dot11MeshGateAnnouncementProtocol = 2276 nconf->dot11MeshGateAnnouncementProtocol; 2277 } 2278 if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_RANN_INTERVAL, mask)) 2279 conf->dot11MeshHWMPRannInterval = 2280 nconf->dot11MeshHWMPRannInterval; 2281 if (_chg_mesh_attr(NL80211_MESHCONF_FORWARDING, mask)) 2282 conf->dot11MeshForwarding = nconf->dot11MeshForwarding; 2283 if (_chg_mesh_attr(NL80211_MESHCONF_RSSI_THRESHOLD, mask)) { 2284 /* our RSSI threshold implementation is supported only for 2285 * devices that report signal in dBm. 2286 */ 2287 if (!ieee80211_hw_check(&sdata->local->hw, SIGNAL_DBM)) 2288 return -ENOTSUPP; 2289 conf->rssi_threshold = nconf->rssi_threshold; 2290 } 2291 if (_chg_mesh_attr(NL80211_MESHCONF_HT_OPMODE, mask)) { 2292 conf->ht_opmode = nconf->ht_opmode; 2293 sdata->vif.bss_conf.ht_operation_mode = nconf->ht_opmode; 2294 ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_HT); 2295 } 2296 if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_PATH_TO_ROOT_TIMEOUT, mask)) 2297 conf->dot11MeshHWMPactivePathToRootTimeout = 2298 nconf->dot11MeshHWMPactivePathToRootTimeout; 2299 if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_ROOT_INTERVAL, mask)) 2300 conf->dot11MeshHWMProotInterval = 2301 nconf->dot11MeshHWMProotInterval; 2302 if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_CONFIRMATION_INTERVAL, mask)) 2303 conf->dot11MeshHWMPconfirmationInterval = 2304 nconf->dot11MeshHWMPconfirmationInterval; 2305 if (_chg_mesh_attr(NL80211_MESHCONF_POWER_MODE, mask)) { 2306 conf->power_mode = nconf->power_mode; 2307 ieee80211_mps_local_status_update(sdata); 2308 } 2309 if (_chg_mesh_attr(NL80211_MESHCONF_AWAKE_WINDOW, mask)) 2310 conf->dot11MeshAwakeWindowDuration = 2311 nconf->dot11MeshAwakeWindowDuration; 2312 if (_chg_mesh_attr(NL80211_MESHCONF_PLINK_TIMEOUT, mask)) 2313 conf->plink_timeout = nconf->plink_timeout; 2314 if (_chg_mesh_attr(NL80211_MESHCONF_CONNECTED_TO_GATE, mask)) 2315 conf->dot11MeshConnectedToMeshGate = 2316 nconf->dot11MeshConnectedToMeshGate; 2317 if (_chg_mesh_attr(NL80211_MESHCONF_NOLEARN, mask)) 2318 conf->dot11MeshNolearn = nconf->dot11MeshNolearn; 2319 if (_chg_mesh_attr(NL80211_MESHCONF_CONNECTED_TO_AS, mask)) 2320 conf->dot11MeshConnectedToAuthServer = 2321 nconf->dot11MeshConnectedToAuthServer; 2322 ieee80211_mbss_info_change_notify(sdata, BSS_CHANGED_BEACON); 2323 return 0; 2324 } 2325 2326 static int ieee80211_join_mesh(struct wiphy *wiphy, struct net_device *dev, 2327 const struct mesh_config *conf, 2328 const struct mesh_setup *setup) 2329 { 2330 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 2331 struct ieee80211_if_mesh *ifmsh = &sdata->u.mesh; 2332 int err; 2333 2334 memcpy(&ifmsh->mshcfg, conf, sizeof(struct mesh_config)); 2335 err = copy_mesh_setup(ifmsh, setup); 2336 if (err) 2337 return err; 2338 2339 sdata->control_port_over_nl80211 = setup->control_port_over_nl80211; 2340 2341 /* can mesh use other SMPS modes? */ 2342 sdata->smps_mode = IEEE80211_SMPS_OFF; 2343 sdata->needed_rx_chains = sdata->local->rx_chains; 2344 2345 mutex_lock(&sdata->local->mtx); 2346 err = ieee80211_vif_use_channel(sdata, &setup->chandef, 2347 IEEE80211_CHANCTX_SHARED); 2348 mutex_unlock(&sdata->local->mtx); 2349 if (err) 2350 return err; 2351 2352 return ieee80211_start_mesh(sdata); 2353 } 2354 2355 static int ieee80211_leave_mesh(struct wiphy *wiphy, struct net_device *dev) 2356 { 2357 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 2358 2359 ieee80211_stop_mesh(sdata); 2360 mutex_lock(&sdata->local->mtx); 2361 ieee80211_vif_release_channel(sdata); 2362 kfree(sdata->u.mesh.ie); 2363 mutex_unlock(&sdata->local->mtx); 2364 2365 return 0; 2366 } 2367 #endif 2368 2369 static int ieee80211_change_bss(struct wiphy *wiphy, 2370 struct net_device *dev, 2371 struct bss_parameters *params) 2372 { 2373 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 2374 struct ieee80211_supported_band *sband; 2375 u32 changed = 0; 2376 2377 if (!sdata_dereference(sdata->u.ap.beacon, sdata)) 2378 return -ENOENT; 2379 2380 sband = ieee80211_get_sband(sdata); 2381 if (!sband) 2382 return -EINVAL; 2383 2384 if (params->use_cts_prot >= 0) { 2385 sdata->vif.bss_conf.use_cts_prot = params->use_cts_prot; 2386 changed |= BSS_CHANGED_ERP_CTS_PROT; 2387 } 2388 if (params->use_short_preamble >= 0) { 2389 sdata->vif.bss_conf.use_short_preamble = 2390 params->use_short_preamble; 2391 changed |= BSS_CHANGED_ERP_PREAMBLE; 2392 } 2393 2394 if (!sdata->vif.bss_conf.use_short_slot && 2395 (sband->band == NL80211_BAND_5GHZ || 2396 sband->band == NL80211_BAND_6GHZ)) { 2397 sdata->vif.bss_conf.use_short_slot = true; 2398 changed |= BSS_CHANGED_ERP_SLOT; 2399 } 2400 2401 if (params->use_short_slot_time >= 0) { 2402 sdata->vif.bss_conf.use_short_slot = 2403 params->use_short_slot_time; 2404 changed |= BSS_CHANGED_ERP_SLOT; 2405 } 2406 2407 if (params->basic_rates) { 2408 ieee80211_parse_bitrates(&sdata->vif.bss_conf.chandef, 2409 wiphy->bands[sband->band], 2410 params->basic_rates, 2411 params->basic_rates_len, 2412 &sdata->vif.bss_conf.basic_rates); 2413 changed |= BSS_CHANGED_BASIC_RATES; 2414 ieee80211_check_rate_mask(sdata); 2415 } 2416 2417 if (params->ap_isolate >= 0) { 2418 if (params->ap_isolate) 2419 sdata->flags |= IEEE80211_SDATA_DONT_BRIDGE_PACKETS; 2420 else 2421 sdata->flags &= ~IEEE80211_SDATA_DONT_BRIDGE_PACKETS; 2422 ieee80211_check_fast_rx_iface(sdata); 2423 } 2424 2425 if (params->ht_opmode >= 0) { 2426 sdata->vif.bss_conf.ht_operation_mode = 2427 (u16) params->ht_opmode; 2428 changed |= BSS_CHANGED_HT; 2429 } 2430 2431 if (params->p2p_ctwindow >= 0) { 2432 sdata->vif.bss_conf.p2p_noa_attr.oppps_ctwindow &= 2433 ~IEEE80211_P2P_OPPPS_CTWINDOW_MASK; 2434 sdata->vif.bss_conf.p2p_noa_attr.oppps_ctwindow |= 2435 params->p2p_ctwindow & IEEE80211_P2P_OPPPS_CTWINDOW_MASK; 2436 changed |= BSS_CHANGED_P2P_PS; 2437 } 2438 2439 if (params->p2p_opp_ps > 0) { 2440 sdata->vif.bss_conf.p2p_noa_attr.oppps_ctwindow |= 2441 IEEE80211_P2P_OPPPS_ENABLE_BIT; 2442 changed |= BSS_CHANGED_P2P_PS; 2443 } else if (params->p2p_opp_ps == 0) { 2444 sdata->vif.bss_conf.p2p_noa_attr.oppps_ctwindow &= 2445 ~IEEE80211_P2P_OPPPS_ENABLE_BIT; 2446 changed |= BSS_CHANGED_P2P_PS; 2447 } 2448 2449 ieee80211_bss_info_change_notify(sdata, changed); 2450 2451 return 0; 2452 } 2453 2454 static int ieee80211_set_txq_params(struct wiphy *wiphy, 2455 struct net_device *dev, 2456 struct ieee80211_txq_params *params) 2457 { 2458 struct ieee80211_local *local = wiphy_priv(wiphy); 2459 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 2460 struct ieee80211_tx_queue_params p; 2461 2462 if (!local->ops->conf_tx) 2463 return -EOPNOTSUPP; 2464 2465 if (local->hw.queues < IEEE80211_NUM_ACS) 2466 return -EOPNOTSUPP; 2467 2468 memset(&p, 0, sizeof(p)); 2469 p.aifs = params->aifs; 2470 p.cw_max = params->cwmax; 2471 p.cw_min = params->cwmin; 2472 p.txop = params->txop; 2473 2474 /* 2475 * Setting tx queue params disables u-apsd because it's only 2476 * called in master mode. 2477 */ 2478 p.uapsd = false; 2479 2480 ieee80211_regulatory_limit_wmm_params(sdata, &p, params->ac); 2481 2482 sdata->tx_conf[params->ac] = p; 2483 if (drv_conf_tx(local, sdata, params->ac, &p)) { 2484 wiphy_debug(local->hw.wiphy, 2485 "failed to set TX queue parameters for AC %d\n", 2486 params->ac); 2487 return -EINVAL; 2488 } 2489 2490 ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_QOS); 2491 2492 return 0; 2493 } 2494 2495 #ifdef CONFIG_PM 2496 static int ieee80211_suspend(struct wiphy *wiphy, 2497 struct cfg80211_wowlan *wowlan) 2498 { 2499 return __ieee80211_suspend(wiphy_priv(wiphy), wowlan); 2500 } 2501 2502 static int ieee80211_resume(struct wiphy *wiphy) 2503 { 2504 return __ieee80211_resume(wiphy_priv(wiphy)); 2505 } 2506 #else 2507 #define ieee80211_suspend NULL 2508 #define ieee80211_resume NULL 2509 #endif 2510 2511 static int ieee80211_scan(struct wiphy *wiphy, 2512 struct cfg80211_scan_request *req) 2513 { 2514 struct ieee80211_sub_if_data *sdata; 2515 2516 sdata = IEEE80211_WDEV_TO_SUB_IF(req->wdev); 2517 2518 switch (ieee80211_vif_type_p2p(&sdata->vif)) { 2519 case NL80211_IFTYPE_STATION: 2520 case NL80211_IFTYPE_ADHOC: 2521 case NL80211_IFTYPE_MESH_POINT: 2522 case NL80211_IFTYPE_P2P_CLIENT: 2523 case NL80211_IFTYPE_P2P_DEVICE: 2524 break; 2525 case NL80211_IFTYPE_P2P_GO: 2526 if (sdata->local->ops->hw_scan) 2527 break; 2528 /* 2529 * FIXME: implement NoA while scanning in software, 2530 * for now fall through to allow scanning only when 2531 * beaconing hasn't been configured yet 2532 */ 2533 fallthrough; 2534 case NL80211_IFTYPE_AP: 2535 /* 2536 * If the scan has been forced (and the driver supports 2537 * forcing), don't care about being beaconing already. 2538 * This will create problems to the attached stations (e.g. all 2539 * the frames sent while scanning on other channel will be 2540 * lost) 2541 */ 2542 if (sdata->u.ap.beacon && 2543 (!(wiphy->features & NL80211_FEATURE_AP_SCAN) || 2544 !(req->flags & NL80211_SCAN_FLAG_AP))) 2545 return -EOPNOTSUPP; 2546 break; 2547 case NL80211_IFTYPE_NAN: 2548 default: 2549 return -EOPNOTSUPP; 2550 } 2551 2552 return ieee80211_request_scan(sdata, req); 2553 } 2554 2555 static void ieee80211_abort_scan(struct wiphy *wiphy, struct wireless_dev *wdev) 2556 { 2557 ieee80211_scan_cancel(wiphy_priv(wiphy)); 2558 } 2559 2560 static int 2561 ieee80211_sched_scan_start(struct wiphy *wiphy, 2562 struct net_device *dev, 2563 struct cfg80211_sched_scan_request *req) 2564 { 2565 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 2566 2567 if (!sdata->local->ops->sched_scan_start) 2568 return -EOPNOTSUPP; 2569 2570 return ieee80211_request_sched_scan_start(sdata, req); 2571 } 2572 2573 static int 2574 ieee80211_sched_scan_stop(struct wiphy *wiphy, struct net_device *dev, 2575 u64 reqid) 2576 { 2577 struct ieee80211_local *local = wiphy_priv(wiphy); 2578 2579 if (!local->ops->sched_scan_stop) 2580 return -EOPNOTSUPP; 2581 2582 return ieee80211_request_sched_scan_stop(local); 2583 } 2584 2585 static int ieee80211_auth(struct wiphy *wiphy, struct net_device *dev, 2586 struct cfg80211_auth_request *req) 2587 { 2588 return ieee80211_mgd_auth(IEEE80211_DEV_TO_SUB_IF(dev), req); 2589 } 2590 2591 static int ieee80211_assoc(struct wiphy *wiphy, struct net_device *dev, 2592 struct cfg80211_assoc_request *req) 2593 { 2594 return ieee80211_mgd_assoc(IEEE80211_DEV_TO_SUB_IF(dev), req); 2595 } 2596 2597 static int ieee80211_deauth(struct wiphy *wiphy, struct net_device *dev, 2598 struct cfg80211_deauth_request *req) 2599 { 2600 return ieee80211_mgd_deauth(IEEE80211_DEV_TO_SUB_IF(dev), req); 2601 } 2602 2603 static int ieee80211_disassoc(struct wiphy *wiphy, struct net_device *dev, 2604 struct cfg80211_disassoc_request *req) 2605 { 2606 return ieee80211_mgd_disassoc(IEEE80211_DEV_TO_SUB_IF(dev), req); 2607 } 2608 2609 static int ieee80211_join_ibss(struct wiphy *wiphy, struct net_device *dev, 2610 struct cfg80211_ibss_params *params) 2611 { 2612 return ieee80211_ibss_join(IEEE80211_DEV_TO_SUB_IF(dev), params); 2613 } 2614 2615 static int ieee80211_leave_ibss(struct wiphy *wiphy, struct net_device *dev) 2616 { 2617 return ieee80211_ibss_leave(IEEE80211_DEV_TO_SUB_IF(dev)); 2618 } 2619 2620 static int ieee80211_join_ocb(struct wiphy *wiphy, struct net_device *dev, 2621 struct ocb_setup *setup) 2622 { 2623 return ieee80211_ocb_join(IEEE80211_DEV_TO_SUB_IF(dev), setup); 2624 } 2625 2626 static int ieee80211_leave_ocb(struct wiphy *wiphy, struct net_device *dev) 2627 { 2628 return ieee80211_ocb_leave(IEEE80211_DEV_TO_SUB_IF(dev)); 2629 } 2630 2631 static int ieee80211_set_mcast_rate(struct wiphy *wiphy, struct net_device *dev, 2632 int rate[NUM_NL80211_BANDS]) 2633 { 2634 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 2635 2636 memcpy(sdata->vif.bss_conf.mcast_rate, rate, 2637 sizeof(int) * NUM_NL80211_BANDS); 2638 2639 ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_MCAST_RATE); 2640 2641 return 0; 2642 } 2643 2644 static int ieee80211_set_wiphy_params(struct wiphy *wiphy, u32 changed) 2645 { 2646 struct ieee80211_local *local = wiphy_priv(wiphy); 2647 int err; 2648 2649 if (changed & WIPHY_PARAM_FRAG_THRESHOLD) { 2650 ieee80211_check_fast_xmit_all(local); 2651 2652 err = drv_set_frag_threshold(local, wiphy->frag_threshold); 2653 2654 if (err) { 2655 ieee80211_check_fast_xmit_all(local); 2656 return err; 2657 } 2658 } 2659 2660 if ((changed & WIPHY_PARAM_COVERAGE_CLASS) || 2661 (changed & WIPHY_PARAM_DYN_ACK)) { 2662 s16 coverage_class; 2663 2664 coverage_class = changed & WIPHY_PARAM_COVERAGE_CLASS ? 2665 wiphy->coverage_class : -1; 2666 err = drv_set_coverage_class(local, coverage_class); 2667 2668 if (err) 2669 return err; 2670 } 2671 2672 if (changed & WIPHY_PARAM_RTS_THRESHOLD) { 2673 err = drv_set_rts_threshold(local, wiphy->rts_threshold); 2674 2675 if (err) 2676 return err; 2677 } 2678 2679 if (changed & WIPHY_PARAM_RETRY_SHORT) { 2680 if (wiphy->retry_short > IEEE80211_MAX_TX_RETRY) 2681 return -EINVAL; 2682 local->hw.conf.short_frame_max_tx_count = wiphy->retry_short; 2683 } 2684 if (changed & WIPHY_PARAM_RETRY_LONG) { 2685 if (wiphy->retry_long > IEEE80211_MAX_TX_RETRY) 2686 return -EINVAL; 2687 local->hw.conf.long_frame_max_tx_count = wiphy->retry_long; 2688 } 2689 if (changed & 2690 (WIPHY_PARAM_RETRY_SHORT | WIPHY_PARAM_RETRY_LONG)) 2691 ieee80211_hw_config(local, IEEE80211_CONF_CHANGE_RETRY_LIMITS); 2692 2693 if (changed & (WIPHY_PARAM_TXQ_LIMIT | 2694 WIPHY_PARAM_TXQ_MEMORY_LIMIT | 2695 WIPHY_PARAM_TXQ_QUANTUM)) 2696 ieee80211_txq_set_params(local); 2697 2698 return 0; 2699 } 2700 2701 static int ieee80211_set_tx_power(struct wiphy *wiphy, 2702 struct wireless_dev *wdev, 2703 enum nl80211_tx_power_setting type, int mbm) 2704 { 2705 struct ieee80211_local *local = wiphy_priv(wiphy); 2706 struct ieee80211_sub_if_data *sdata; 2707 enum nl80211_tx_power_setting txp_type = type; 2708 bool update_txp_type = false; 2709 bool has_monitor = false; 2710 2711 if (wdev) { 2712 sdata = IEEE80211_WDEV_TO_SUB_IF(wdev); 2713 2714 if (sdata->vif.type == NL80211_IFTYPE_MONITOR) { 2715 sdata = wiphy_dereference(local->hw.wiphy, 2716 local->monitor_sdata); 2717 if (!sdata) 2718 return -EOPNOTSUPP; 2719 } 2720 2721 switch (type) { 2722 case NL80211_TX_POWER_AUTOMATIC: 2723 sdata->user_power_level = IEEE80211_UNSET_POWER_LEVEL; 2724 txp_type = NL80211_TX_POWER_LIMITED; 2725 break; 2726 case NL80211_TX_POWER_LIMITED: 2727 case NL80211_TX_POWER_FIXED: 2728 if (mbm < 0 || (mbm % 100)) 2729 return -EOPNOTSUPP; 2730 sdata->user_power_level = MBM_TO_DBM(mbm); 2731 break; 2732 } 2733 2734 if (txp_type != sdata->vif.bss_conf.txpower_type) { 2735 update_txp_type = true; 2736 sdata->vif.bss_conf.txpower_type = txp_type; 2737 } 2738 2739 ieee80211_recalc_txpower(sdata, update_txp_type); 2740 2741 return 0; 2742 } 2743 2744 switch (type) { 2745 case NL80211_TX_POWER_AUTOMATIC: 2746 local->user_power_level = IEEE80211_UNSET_POWER_LEVEL; 2747 txp_type = NL80211_TX_POWER_LIMITED; 2748 break; 2749 case NL80211_TX_POWER_LIMITED: 2750 case NL80211_TX_POWER_FIXED: 2751 if (mbm < 0 || (mbm % 100)) 2752 return -EOPNOTSUPP; 2753 local->user_power_level = MBM_TO_DBM(mbm); 2754 break; 2755 } 2756 2757 mutex_lock(&local->iflist_mtx); 2758 list_for_each_entry(sdata, &local->interfaces, list) { 2759 if (sdata->vif.type == NL80211_IFTYPE_MONITOR) { 2760 has_monitor = true; 2761 continue; 2762 } 2763 sdata->user_power_level = local->user_power_level; 2764 if (txp_type != sdata->vif.bss_conf.txpower_type) 2765 update_txp_type = true; 2766 sdata->vif.bss_conf.txpower_type = txp_type; 2767 } 2768 list_for_each_entry(sdata, &local->interfaces, list) { 2769 if (sdata->vif.type == NL80211_IFTYPE_MONITOR) 2770 continue; 2771 ieee80211_recalc_txpower(sdata, update_txp_type); 2772 } 2773 mutex_unlock(&local->iflist_mtx); 2774 2775 if (has_monitor) { 2776 sdata = wiphy_dereference(local->hw.wiphy, 2777 local->monitor_sdata); 2778 if (sdata) { 2779 sdata->user_power_level = local->user_power_level; 2780 if (txp_type != sdata->vif.bss_conf.txpower_type) 2781 update_txp_type = true; 2782 sdata->vif.bss_conf.txpower_type = txp_type; 2783 2784 ieee80211_recalc_txpower(sdata, update_txp_type); 2785 } 2786 } 2787 2788 return 0; 2789 } 2790 2791 static int ieee80211_get_tx_power(struct wiphy *wiphy, 2792 struct wireless_dev *wdev, 2793 int *dbm) 2794 { 2795 struct ieee80211_local *local = wiphy_priv(wiphy); 2796 struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev); 2797 2798 if (local->ops->get_txpower) 2799 return drv_get_txpower(local, sdata, dbm); 2800 2801 if (!local->use_chanctx) 2802 *dbm = local->hw.conf.power_level; 2803 else 2804 *dbm = sdata->vif.bss_conf.txpower; 2805 2806 return 0; 2807 } 2808 2809 static void ieee80211_rfkill_poll(struct wiphy *wiphy) 2810 { 2811 struct ieee80211_local *local = wiphy_priv(wiphy); 2812 2813 drv_rfkill_poll(local); 2814 } 2815 2816 #ifdef CONFIG_NL80211_TESTMODE 2817 static int ieee80211_testmode_cmd(struct wiphy *wiphy, 2818 struct wireless_dev *wdev, 2819 void *data, int len) 2820 { 2821 struct ieee80211_local *local = wiphy_priv(wiphy); 2822 struct ieee80211_vif *vif = NULL; 2823 2824 if (!local->ops->testmode_cmd) 2825 return -EOPNOTSUPP; 2826 2827 if (wdev) { 2828 struct ieee80211_sub_if_data *sdata; 2829 2830 sdata = IEEE80211_WDEV_TO_SUB_IF(wdev); 2831 if (sdata->flags & IEEE80211_SDATA_IN_DRIVER) 2832 vif = &sdata->vif; 2833 } 2834 2835 return local->ops->testmode_cmd(&local->hw, vif, data, len); 2836 } 2837 2838 static int ieee80211_testmode_dump(struct wiphy *wiphy, 2839 struct sk_buff *skb, 2840 struct netlink_callback *cb, 2841 void *data, int len) 2842 { 2843 struct ieee80211_local *local = wiphy_priv(wiphy); 2844 2845 if (!local->ops->testmode_dump) 2846 return -EOPNOTSUPP; 2847 2848 return local->ops->testmode_dump(&local->hw, skb, cb, data, len); 2849 } 2850 #endif 2851 2852 int __ieee80211_request_smps_mgd(struct ieee80211_sub_if_data *sdata, 2853 enum ieee80211_smps_mode smps_mode) 2854 { 2855 const u8 *ap; 2856 enum ieee80211_smps_mode old_req; 2857 int err; 2858 struct sta_info *sta; 2859 bool tdls_peer_found = false; 2860 2861 lockdep_assert_held(&sdata->wdev.mtx); 2862 2863 if (WARN_ON_ONCE(sdata->vif.type != NL80211_IFTYPE_STATION)) 2864 return -EINVAL; 2865 2866 old_req = sdata->u.mgd.req_smps; 2867 sdata->u.mgd.req_smps = smps_mode; 2868 2869 if (old_req == smps_mode && 2870 smps_mode != IEEE80211_SMPS_AUTOMATIC) 2871 return 0; 2872 2873 /* 2874 * If not associated, or current association is not an HT 2875 * association, there's no need to do anything, just store 2876 * the new value until we associate. 2877 */ 2878 if (!sdata->u.mgd.associated || 2879 sdata->vif.bss_conf.chandef.width == NL80211_CHAN_WIDTH_20_NOHT) 2880 return 0; 2881 2882 ap = sdata->u.mgd.associated->bssid; 2883 2884 rcu_read_lock(); 2885 list_for_each_entry_rcu(sta, &sdata->local->sta_list, list) { 2886 if (!sta->sta.tdls || sta->sdata != sdata || !sta->uploaded || 2887 !test_sta_flag(sta, WLAN_STA_AUTHORIZED)) 2888 continue; 2889 2890 tdls_peer_found = true; 2891 break; 2892 } 2893 rcu_read_unlock(); 2894 2895 if (smps_mode == IEEE80211_SMPS_AUTOMATIC) { 2896 if (tdls_peer_found || !sdata->u.mgd.powersave) 2897 smps_mode = IEEE80211_SMPS_OFF; 2898 else 2899 smps_mode = IEEE80211_SMPS_DYNAMIC; 2900 } 2901 2902 /* send SM PS frame to AP */ 2903 err = ieee80211_send_smps_action(sdata, smps_mode, 2904 ap, ap); 2905 if (err) 2906 sdata->u.mgd.req_smps = old_req; 2907 else if (smps_mode != IEEE80211_SMPS_OFF && tdls_peer_found) 2908 ieee80211_teardown_tdls_peers(sdata); 2909 2910 return err; 2911 } 2912 2913 static int ieee80211_set_power_mgmt(struct wiphy *wiphy, struct net_device *dev, 2914 bool enabled, int timeout) 2915 { 2916 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 2917 struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr); 2918 2919 if (sdata->vif.type != NL80211_IFTYPE_STATION) 2920 return -EOPNOTSUPP; 2921 2922 if (!ieee80211_hw_check(&local->hw, SUPPORTS_PS)) 2923 return -EOPNOTSUPP; 2924 2925 if (enabled == sdata->u.mgd.powersave && 2926 timeout == local->dynamic_ps_forced_timeout) 2927 return 0; 2928 2929 sdata->u.mgd.powersave = enabled; 2930 local->dynamic_ps_forced_timeout = timeout; 2931 2932 /* no change, but if automatic follow powersave */ 2933 sdata_lock(sdata); 2934 __ieee80211_request_smps_mgd(sdata, sdata->u.mgd.req_smps); 2935 sdata_unlock(sdata); 2936 2937 if (ieee80211_hw_check(&local->hw, SUPPORTS_DYNAMIC_PS)) 2938 ieee80211_hw_config(local, IEEE80211_CONF_CHANGE_PS); 2939 2940 ieee80211_recalc_ps(local); 2941 ieee80211_recalc_ps_vif(sdata); 2942 ieee80211_check_fast_rx_iface(sdata); 2943 2944 return 0; 2945 } 2946 2947 static int ieee80211_set_cqm_rssi_config(struct wiphy *wiphy, 2948 struct net_device *dev, 2949 s32 rssi_thold, u32 rssi_hyst) 2950 { 2951 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 2952 struct ieee80211_vif *vif = &sdata->vif; 2953 struct ieee80211_bss_conf *bss_conf = &vif->bss_conf; 2954 2955 if (rssi_thold == bss_conf->cqm_rssi_thold && 2956 rssi_hyst == bss_conf->cqm_rssi_hyst) 2957 return 0; 2958 2959 if (sdata->vif.driver_flags & IEEE80211_VIF_BEACON_FILTER && 2960 !(sdata->vif.driver_flags & IEEE80211_VIF_SUPPORTS_CQM_RSSI)) 2961 return -EOPNOTSUPP; 2962 2963 bss_conf->cqm_rssi_thold = rssi_thold; 2964 bss_conf->cqm_rssi_hyst = rssi_hyst; 2965 bss_conf->cqm_rssi_low = 0; 2966 bss_conf->cqm_rssi_high = 0; 2967 sdata->u.mgd.last_cqm_event_signal = 0; 2968 2969 /* tell the driver upon association, unless already associated */ 2970 if (sdata->u.mgd.associated && 2971 sdata->vif.driver_flags & IEEE80211_VIF_SUPPORTS_CQM_RSSI) 2972 ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_CQM); 2973 2974 return 0; 2975 } 2976 2977 static int ieee80211_set_cqm_rssi_range_config(struct wiphy *wiphy, 2978 struct net_device *dev, 2979 s32 rssi_low, s32 rssi_high) 2980 { 2981 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 2982 struct ieee80211_vif *vif = &sdata->vif; 2983 struct ieee80211_bss_conf *bss_conf = &vif->bss_conf; 2984 2985 if (sdata->vif.driver_flags & IEEE80211_VIF_BEACON_FILTER) 2986 return -EOPNOTSUPP; 2987 2988 bss_conf->cqm_rssi_low = rssi_low; 2989 bss_conf->cqm_rssi_high = rssi_high; 2990 bss_conf->cqm_rssi_thold = 0; 2991 bss_conf->cqm_rssi_hyst = 0; 2992 sdata->u.mgd.last_cqm_event_signal = 0; 2993 2994 /* tell the driver upon association, unless already associated */ 2995 if (sdata->u.mgd.associated && 2996 sdata->vif.driver_flags & IEEE80211_VIF_SUPPORTS_CQM_RSSI) 2997 ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_CQM); 2998 2999 return 0; 3000 } 3001 3002 static int ieee80211_set_bitrate_mask(struct wiphy *wiphy, 3003 struct net_device *dev, 3004 const u8 *addr, 3005 const struct cfg80211_bitrate_mask *mask) 3006 { 3007 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 3008 struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr); 3009 int i, ret; 3010 3011 if (!ieee80211_sdata_running(sdata)) 3012 return -ENETDOWN; 3013 3014 /* 3015 * If active validate the setting and reject it if it doesn't leave 3016 * at least one basic rate usable, since we really have to be able 3017 * to send something, and if we're an AP we have to be able to do 3018 * so at a basic rate so that all clients can receive it. 3019 */ 3020 if (rcu_access_pointer(sdata->vif.chanctx_conf) && 3021 sdata->vif.bss_conf.chandef.chan) { 3022 u32 basic_rates = sdata->vif.bss_conf.basic_rates; 3023 enum nl80211_band band = sdata->vif.bss_conf.chandef.chan->band; 3024 3025 if (!(mask->control[band].legacy & basic_rates)) 3026 return -EINVAL; 3027 } 3028 3029 if (ieee80211_hw_check(&local->hw, HAS_RATE_CONTROL)) { 3030 ret = drv_set_bitrate_mask(local, sdata, mask); 3031 if (ret) 3032 return ret; 3033 } 3034 3035 for (i = 0; i < NUM_NL80211_BANDS; i++) { 3036 struct ieee80211_supported_band *sband = wiphy->bands[i]; 3037 int j; 3038 3039 sdata->rc_rateidx_mask[i] = mask->control[i].legacy; 3040 memcpy(sdata->rc_rateidx_mcs_mask[i], mask->control[i].ht_mcs, 3041 sizeof(mask->control[i].ht_mcs)); 3042 memcpy(sdata->rc_rateidx_vht_mcs_mask[i], 3043 mask->control[i].vht_mcs, 3044 sizeof(mask->control[i].vht_mcs)); 3045 3046 sdata->rc_has_mcs_mask[i] = false; 3047 sdata->rc_has_vht_mcs_mask[i] = false; 3048 if (!sband) 3049 continue; 3050 3051 for (j = 0; j < IEEE80211_HT_MCS_MASK_LEN; j++) { 3052 if (sdata->rc_rateidx_mcs_mask[i][j] != 0xff) { 3053 sdata->rc_has_mcs_mask[i] = true; 3054 break; 3055 } 3056 } 3057 3058 for (j = 0; j < NL80211_VHT_NSS_MAX; j++) { 3059 if (sdata->rc_rateidx_vht_mcs_mask[i][j] != 0xffff) { 3060 sdata->rc_has_vht_mcs_mask[i] = true; 3061 break; 3062 } 3063 } 3064 } 3065 3066 return 0; 3067 } 3068 3069 static int ieee80211_start_radar_detection(struct wiphy *wiphy, 3070 struct net_device *dev, 3071 struct cfg80211_chan_def *chandef, 3072 u32 cac_time_ms) 3073 { 3074 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 3075 struct ieee80211_local *local = sdata->local; 3076 int err; 3077 3078 mutex_lock(&local->mtx); 3079 if (!list_empty(&local->roc_list) || local->scanning) { 3080 err = -EBUSY; 3081 goto out_unlock; 3082 } 3083 3084 /* whatever, but channel contexts should not complain about that one */ 3085 sdata->smps_mode = IEEE80211_SMPS_OFF; 3086 sdata->needed_rx_chains = local->rx_chains; 3087 3088 err = ieee80211_vif_use_channel(sdata, chandef, 3089 IEEE80211_CHANCTX_SHARED); 3090 if (err) 3091 goto out_unlock; 3092 3093 ieee80211_queue_delayed_work(&sdata->local->hw, 3094 &sdata->dfs_cac_timer_work, 3095 msecs_to_jiffies(cac_time_ms)); 3096 3097 out_unlock: 3098 mutex_unlock(&local->mtx); 3099 return err; 3100 } 3101 3102 static void ieee80211_end_cac(struct wiphy *wiphy, 3103 struct net_device *dev) 3104 { 3105 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 3106 struct ieee80211_local *local = sdata->local; 3107 3108 mutex_lock(&local->mtx); 3109 list_for_each_entry(sdata, &local->interfaces, list) { 3110 /* it might be waiting for the local->mtx, but then 3111 * by the time it gets it, sdata->wdev.cac_started 3112 * will no longer be true 3113 */ 3114 cancel_delayed_work(&sdata->dfs_cac_timer_work); 3115 3116 if (sdata->wdev.cac_started) { 3117 ieee80211_vif_release_channel(sdata); 3118 sdata->wdev.cac_started = false; 3119 } 3120 } 3121 mutex_unlock(&local->mtx); 3122 } 3123 3124 static struct cfg80211_beacon_data * 3125 cfg80211_beacon_dup(struct cfg80211_beacon_data *beacon) 3126 { 3127 struct cfg80211_beacon_data *new_beacon; 3128 u8 *pos; 3129 int len; 3130 3131 len = beacon->head_len + beacon->tail_len + beacon->beacon_ies_len + 3132 beacon->proberesp_ies_len + beacon->assocresp_ies_len + 3133 beacon->probe_resp_len + beacon->lci_len + beacon->civicloc_len; 3134 3135 new_beacon = kzalloc(sizeof(*new_beacon) + len, GFP_KERNEL); 3136 if (!new_beacon) 3137 return NULL; 3138 3139 pos = (u8 *)(new_beacon + 1); 3140 if (beacon->head_len) { 3141 new_beacon->head_len = beacon->head_len; 3142 new_beacon->head = pos; 3143 memcpy(pos, beacon->head, beacon->head_len); 3144 pos += beacon->head_len; 3145 } 3146 if (beacon->tail_len) { 3147 new_beacon->tail_len = beacon->tail_len; 3148 new_beacon->tail = pos; 3149 memcpy(pos, beacon->tail, beacon->tail_len); 3150 pos += beacon->tail_len; 3151 } 3152 if (beacon->beacon_ies_len) { 3153 new_beacon->beacon_ies_len = beacon->beacon_ies_len; 3154 new_beacon->beacon_ies = pos; 3155 memcpy(pos, beacon->beacon_ies, beacon->beacon_ies_len); 3156 pos += beacon->beacon_ies_len; 3157 } 3158 if (beacon->proberesp_ies_len) { 3159 new_beacon->proberesp_ies_len = beacon->proberesp_ies_len; 3160 new_beacon->proberesp_ies = pos; 3161 memcpy(pos, beacon->proberesp_ies, beacon->proberesp_ies_len); 3162 pos += beacon->proberesp_ies_len; 3163 } 3164 if (beacon->assocresp_ies_len) { 3165 new_beacon->assocresp_ies_len = beacon->assocresp_ies_len; 3166 new_beacon->assocresp_ies = pos; 3167 memcpy(pos, beacon->assocresp_ies, beacon->assocresp_ies_len); 3168 pos += beacon->assocresp_ies_len; 3169 } 3170 if (beacon->probe_resp_len) { 3171 new_beacon->probe_resp_len = beacon->probe_resp_len; 3172 new_beacon->probe_resp = pos; 3173 memcpy(pos, beacon->probe_resp, beacon->probe_resp_len); 3174 pos += beacon->probe_resp_len; 3175 } 3176 3177 /* might copy -1, meaning no changes requested */ 3178 new_beacon->ftm_responder = beacon->ftm_responder; 3179 if (beacon->lci) { 3180 new_beacon->lci_len = beacon->lci_len; 3181 new_beacon->lci = pos; 3182 memcpy(pos, beacon->lci, beacon->lci_len); 3183 pos += beacon->lci_len; 3184 } 3185 if (beacon->civicloc) { 3186 new_beacon->civicloc_len = beacon->civicloc_len; 3187 new_beacon->civicloc = pos; 3188 memcpy(pos, beacon->civicloc, beacon->civicloc_len); 3189 pos += beacon->civicloc_len; 3190 } 3191 3192 return new_beacon; 3193 } 3194 3195 void ieee80211_csa_finish(struct ieee80211_vif *vif) 3196 { 3197 struct ieee80211_sub_if_data *sdata = vif_to_sdata(vif); 3198 3199 ieee80211_queue_work(&sdata->local->hw, 3200 &sdata->csa_finalize_work); 3201 } 3202 EXPORT_SYMBOL(ieee80211_csa_finish); 3203 3204 void ieee80211_channel_switch_disconnect(struct ieee80211_vif *vif, bool block_tx) 3205 { 3206 struct ieee80211_sub_if_data *sdata = vif_to_sdata(vif); 3207 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; 3208 struct ieee80211_local *local = sdata->local; 3209 3210 sdata->csa_block_tx = block_tx; 3211 sdata_info(sdata, "channel switch failed, disconnecting\n"); 3212 ieee80211_queue_work(&local->hw, &ifmgd->csa_connection_drop_work); 3213 } 3214 EXPORT_SYMBOL(ieee80211_channel_switch_disconnect); 3215 3216 static int ieee80211_set_after_csa_beacon(struct ieee80211_sub_if_data *sdata, 3217 u32 *changed) 3218 { 3219 int err; 3220 3221 switch (sdata->vif.type) { 3222 case NL80211_IFTYPE_AP: 3223 err = ieee80211_assign_beacon(sdata, sdata->u.ap.next_beacon, 3224 NULL, NULL); 3225 kfree(sdata->u.ap.next_beacon); 3226 sdata->u.ap.next_beacon = NULL; 3227 3228 if (err < 0) 3229 return err; 3230 *changed |= err; 3231 break; 3232 case NL80211_IFTYPE_ADHOC: 3233 err = ieee80211_ibss_finish_csa(sdata); 3234 if (err < 0) 3235 return err; 3236 *changed |= err; 3237 break; 3238 #ifdef CONFIG_MAC80211_MESH 3239 case NL80211_IFTYPE_MESH_POINT: 3240 err = ieee80211_mesh_finish_csa(sdata); 3241 if (err < 0) 3242 return err; 3243 *changed |= err; 3244 break; 3245 #endif 3246 default: 3247 WARN_ON(1); 3248 return -EINVAL; 3249 } 3250 3251 return 0; 3252 } 3253 3254 static int __ieee80211_csa_finalize(struct ieee80211_sub_if_data *sdata) 3255 { 3256 struct ieee80211_local *local = sdata->local; 3257 u32 changed = 0; 3258 int err; 3259 3260 sdata_assert_lock(sdata); 3261 lockdep_assert_held(&local->mtx); 3262 lockdep_assert_held(&local->chanctx_mtx); 3263 3264 /* 3265 * using reservation isn't immediate as it may be deferred until later 3266 * with multi-vif. once reservation is complete it will re-schedule the 3267 * work with no reserved_chanctx so verify chandef to check if it 3268 * completed successfully 3269 */ 3270 3271 if (sdata->reserved_chanctx) { 3272 /* 3273 * with multi-vif csa driver may call ieee80211_csa_finish() 3274 * many times while waiting for other interfaces to use their 3275 * reservations 3276 */ 3277 if (sdata->reserved_ready) 3278 return 0; 3279 3280 return ieee80211_vif_use_reserved_context(sdata); 3281 } 3282 3283 if (!cfg80211_chandef_identical(&sdata->vif.bss_conf.chandef, 3284 &sdata->csa_chandef)) 3285 return -EINVAL; 3286 3287 sdata->vif.csa_active = false; 3288 3289 err = ieee80211_set_after_csa_beacon(sdata, &changed); 3290 if (err) 3291 return err; 3292 3293 ieee80211_bss_info_change_notify(sdata, changed); 3294 3295 if (sdata->csa_block_tx) { 3296 ieee80211_wake_vif_queues(local, sdata, 3297 IEEE80211_QUEUE_STOP_REASON_CSA); 3298 sdata->csa_block_tx = false; 3299 } 3300 3301 err = drv_post_channel_switch(sdata); 3302 if (err) 3303 return err; 3304 3305 cfg80211_ch_switch_notify(sdata->dev, &sdata->csa_chandef); 3306 3307 return 0; 3308 } 3309 3310 static void ieee80211_csa_finalize(struct ieee80211_sub_if_data *sdata) 3311 { 3312 if (__ieee80211_csa_finalize(sdata)) { 3313 sdata_info(sdata, "failed to finalize CSA, disconnecting\n"); 3314 cfg80211_stop_iface(sdata->local->hw.wiphy, &sdata->wdev, 3315 GFP_KERNEL); 3316 } 3317 } 3318 3319 void ieee80211_csa_finalize_work(struct work_struct *work) 3320 { 3321 struct ieee80211_sub_if_data *sdata = 3322 container_of(work, struct ieee80211_sub_if_data, 3323 csa_finalize_work); 3324 struct ieee80211_local *local = sdata->local; 3325 3326 sdata_lock(sdata); 3327 mutex_lock(&local->mtx); 3328 mutex_lock(&local->chanctx_mtx); 3329 3330 /* AP might have been stopped while waiting for the lock. */ 3331 if (!sdata->vif.csa_active) 3332 goto unlock; 3333 3334 if (!ieee80211_sdata_running(sdata)) 3335 goto unlock; 3336 3337 ieee80211_csa_finalize(sdata); 3338 3339 unlock: 3340 mutex_unlock(&local->chanctx_mtx); 3341 mutex_unlock(&local->mtx); 3342 sdata_unlock(sdata); 3343 } 3344 3345 static int ieee80211_set_csa_beacon(struct ieee80211_sub_if_data *sdata, 3346 struct cfg80211_csa_settings *params, 3347 u32 *changed) 3348 { 3349 struct ieee80211_csa_settings csa = {}; 3350 int err; 3351 3352 switch (sdata->vif.type) { 3353 case NL80211_IFTYPE_AP: 3354 sdata->u.ap.next_beacon = 3355 cfg80211_beacon_dup(¶ms->beacon_after); 3356 if (!sdata->u.ap.next_beacon) 3357 return -ENOMEM; 3358 3359 /* 3360 * With a count of 0, we don't have to wait for any 3361 * TBTT before switching, so complete the CSA 3362 * immediately. In theory, with a count == 1 we 3363 * should delay the switch until just before the next 3364 * TBTT, but that would complicate things so we switch 3365 * immediately too. If we would delay the switch 3366 * until the next TBTT, we would have to set the probe 3367 * response here. 3368 * 3369 * TODO: A channel switch with count <= 1 without 3370 * sending a CSA action frame is kind of useless, 3371 * because the clients won't know we're changing 3372 * channels. The action frame must be implemented 3373 * either here or in the userspace. 3374 */ 3375 if (params->count <= 1) 3376 break; 3377 3378 if ((params->n_counter_offsets_beacon > 3379 IEEE80211_MAX_CNTDWN_COUNTERS_NUM) || 3380 (params->n_counter_offsets_presp > 3381 IEEE80211_MAX_CNTDWN_COUNTERS_NUM)) 3382 return -EINVAL; 3383 3384 csa.counter_offsets_beacon = params->counter_offsets_beacon; 3385 csa.counter_offsets_presp = params->counter_offsets_presp; 3386 csa.n_counter_offsets_beacon = params->n_counter_offsets_beacon; 3387 csa.n_counter_offsets_presp = params->n_counter_offsets_presp; 3388 csa.count = params->count; 3389 3390 err = ieee80211_assign_beacon(sdata, ¶ms->beacon_csa, &csa, NULL); 3391 if (err < 0) { 3392 kfree(sdata->u.ap.next_beacon); 3393 return err; 3394 } 3395 *changed |= err; 3396 3397 break; 3398 case NL80211_IFTYPE_ADHOC: 3399 if (!sdata->vif.bss_conf.ibss_joined) 3400 return -EINVAL; 3401 3402 if (params->chandef.width != sdata->u.ibss.chandef.width) 3403 return -EINVAL; 3404 3405 switch (params->chandef.width) { 3406 case NL80211_CHAN_WIDTH_40: 3407 if (cfg80211_get_chandef_type(¶ms->chandef) != 3408 cfg80211_get_chandef_type(&sdata->u.ibss.chandef)) 3409 return -EINVAL; 3410 break; 3411 case NL80211_CHAN_WIDTH_5: 3412 case NL80211_CHAN_WIDTH_10: 3413 case NL80211_CHAN_WIDTH_20_NOHT: 3414 case NL80211_CHAN_WIDTH_20: 3415 break; 3416 default: 3417 return -EINVAL; 3418 } 3419 3420 /* changes into another band are not supported */ 3421 if (sdata->u.ibss.chandef.chan->band != 3422 params->chandef.chan->band) 3423 return -EINVAL; 3424 3425 /* see comments in the NL80211_IFTYPE_AP block */ 3426 if (params->count > 1) { 3427 err = ieee80211_ibss_csa_beacon(sdata, params); 3428 if (err < 0) 3429 return err; 3430 *changed |= err; 3431 } 3432 3433 ieee80211_send_action_csa(sdata, params); 3434 3435 break; 3436 #ifdef CONFIG_MAC80211_MESH 3437 case NL80211_IFTYPE_MESH_POINT: { 3438 struct ieee80211_if_mesh *ifmsh = &sdata->u.mesh; 3439 3440 if (params->chandef.width != sdata->vif.bss_conf.chandef.width) 3441 return -EINVAL; 3442 3443 /* changes into another band are not supported */ 3444 if (sdata->vif.bss_conf.chandef.chan->band != 3445 params->chandef.chan->band) 3446 return -EINVAL; 3447 3448 if (ifmsh->csa_role == IEEE80211_MESH_CSA_ROLE_NONE) { 3449 ifmsh->csa_role = IEEE80211_MESH_CSA_ROLE_INIT; 3450 if (!ifmsh->pre_value) 3451 ifmsh->pre_value = 1; 3452 else 3453 ifmsh->pre_value++; 3454 } 3455 3456 /* see comments in the NL80211_IFTYPE_AP block */ 3457 if (params->count > 1) { 3458 err = ieee80211_mesh_csa_beacon(sdata, params); 3459 if (err < 0) { 3460 ifmsh->csa_role = IEEE80211_MESH_CSA_ROLE_NONE; 3461 return err; 3462 } 3463 *changed |= err; 3464 } 3465 3466 if (ifmsh->csa_role == IEEE80211_MESH_CSA_ROLE_INIT) 3467 ieee80211_send_action_csa(sdata, params); 3468 3469 break; 3470 } 3471 #endif 3472 default: 3473 return -EOPNOTSUPP; 3474 } 3475 3476 return 0; 3477 } 3478 3479 static void ieee80211_color_change_abort(struct ieee80211_sub_if_data *sdata) 3480 { 3481 sdata->vif.color_change_active = false; 3482 kfree(sdata->u.ap.next_beacon); 3483 sdata->u.ap.next_beacon = NULL; 3484 3485 cfg80211_color_change_aborted_notify(sdata->dev); 3486 } 3487 3488 static int 3489 __ieee80211_channel_switch(struct wiphy *wiphy, struct net_device *dev, 3490 struct cfg80211_csa_settings *params) 3491 { 3492 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 3493 struct ieee80211_local *local = sdata->local; 3494 struct ieee80211_channel_switch ch_switch; 3495 struct ieee80211_chanctx_conf *conf; 3496 struct ieee80211_chanctx *chanctx; 3497 u32 changed = 0; 3498 int err; 3499 3500 sdata_assert_lock(sdata); 3501 lockdep_assert_held(&local->mtx); 3502 3503 if (!list_empty(&local->roc_list) || local->scanning) 3504 return -EBUSY; 3505 3506 if (sdata->wdev.cac_started) 3507 return -EBUSY; 3508 3509 if (cfg80211_chandef_identical(¶ms->chandef, 3510 &sdata->vif.bss_conf.chandef)) 3511 return -EINVAL; 3512 3513 /* don't allow another channel switch if one is already active. */ 3514 if (sdata->vif.csa_active) 3515 return -EBUSY; 3516 3517 mutex_lock(&local->chanctx_mtx); 3518 conf = rcu_dereference_protected(sdata->vif.chanctx_conf, 3519 lockdep_is_held(&local->chanctx_mtx)); 3520 if (!conf) { 3521 err = -EBUSY; 3522 goto out; 3523 } 3524 3525 if (params->chandef.chan->freq_offset) { 3526 /* this may work, but is untested */ 3527 err = -EOPNOTSUPP; 3528 goto out; 3529 } 3530 3531 chanctx = container_of(conf, struct ieee80211_chanctx, conf); 3532 3533 ch_switch.timestamp = 0; 3534 ch_switch.device_timestamp = 0; 3535 ch_switch.block_tx = params->block_tx; 3536 ch_switch.chandef = params->chandef; 3537 ch_switch.count = params->count; 3538 3539 err = drv_pre_channel_switch(sdata, &ch_switch); 3540 if (err) 3541 goto out; 3542 3543 err = ieee80211_vif_reserve_chanctx(sdata, ¶ms->chandef, 3544 chanctx->mode, 3545 params->radar_required); 3546 if (err) 3547 goto out; 3548 3549 /* if reservation is invalid then this will fail */ 3550 err = ieee80211_check_combinations(sdata, NULL, chanctx->mode, 0); 3551 if (err) { 3552 ieee80211_vif_unreserve_chanctx(sdata); 3553 goto out; 3554 } 3555 3556 /* if there is a color change in progress, abort it */ 3557 if (sdata->vif.color_change_active) 3558 ieee80211_color_change_abort(sdata); 3559 3560 err = ieee80211_set_csa_beacon(sdata, params, &changed); 3561 if (err) { 3562 ieee80211_vif_unreserve_chanctx(sdata); 3563 goto out; 3564 } 3565 3566 sdata->csa_chandef = params->chandef; 3567 sdata->csa_block_tx = params->block_tx; 3568 sdata->vif.csa_active = true; 3569 3570 if (sdata->csa_block_tx) 3571 ieee80211_stop_vif_queues(local, sdata, 3572 IEEE80211_QUEUE_STOP_REASON_CSA); 3573 3574 cfg80211_ch_switch_started_notify(sdata->dev, &sdata->csa_chandef, 3575 params->count, params->block_tx); 3576 3577 if (changed) { 3578 ieee80211_bss_info_change_notify(sdata, changed); 3579 drv_channel_switch_beacon(sdata, ¶ms->chandef); 3580 } else { 3581 /* if the beacon didn't change, we can finalize immediately */ 3582 ieee80211_csa_finalize(sdata); 3583 } 3584 3585 out: 3586 mutex_unlock(&local->chanctx_mtx); 3587 return err; 3588 } 3589 3590 int ieee80211_channel_switch(struct wiphy *wiphy, struct net_device *dev, 3591 struct cfg80211_csa_settings *params) 3592 { 3593 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 3594 struct ieee80211_local *local = sdata->local; 3595 int err; 3596 3597 mutex_lock(&local->mtx); 3598 err = __ieee80211_channel_switch(wiphy, dev, params); 3599 mutex_unlock(&local->mtx); 3600 3601 return err; 3602 } 3603 3604 u64 ieee80211_mgmt_tx_cookie(struct ieee80211_local *local) 3605 { 3606 lockdep_assert_held(&local->mtx); 3607 3608 local->roc_cookie_counter++; 3609 3610 /* wow, you wrapped 64 bits ... more likely a bug */ 3611 if (WARN_ON(local->roc_cookie_counter == 0)) 3612 local->roc_cookie_counter++; 3613 3614 return local->roc_cookie_counter; 3615 } 3616 3617 int ieee80211_attach_ack_skb(struct ieee80211_local *local, struct sk_buff *skb, 3618 u64 *cookie, gfp_t gfp) 3619 { 3620 unsigned long spin_flags; 3621 struct sk_buff *ack_skb; 3622 int id; 3623 3624 ack_skb = skb_copy(skb, gfp); 3625 if (!ack_skb) 3626 return -ENOMEM; 3627 3628 spin_lock_irqsave(&local->ack_status_lock, spin_flags); 3629 id = idr_alloc(&local->ack_status_frames, ack_skb, 3630 1, 0x2000, GFP_ATOMIC); 3631 spin_unlock_irqrestore(&local->ack_status_lock, spin_flags); 3632 3633 if (id < 0) { 3634 kfree_skb(ack_skb); 3635 return -ENOMEM; 3636 } 3637 3638 IEEE80211_SKB_CB(skb)->ack_frame_id = id; 3639 3640 *cookie = ieee80211_mgmt_tx_cookie(local); 3641 IEEE80211_SKB_CB(ack_skb)->ack.cookie = *cookie; 3642 3643 return 0; 3644 } 3645 3646 static void 3647 ieee80211_update_mgmt_frame_registrations(struct wiphy *wiphy, 3648 struct wireless_dev *wdev, 3649 struct mgmt_frame_regs *upd) 3650 { 3651 struct ieee80211_local *local = wiphy_priv(wiphy); 3652 struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev); 3653 u32 preq_mask = BIT(IEEE80211_STYPE_PROBE_REQ >> 4); 3654 u32 action_mask = BIT(IEEE80211_STYPE_ACTION >> 4); 3655 bool global_change, intf_change; 3656 3657 global_change = 3658 (local->probe_req_reg != !!(upd->global_stypes & preq_mask)) || 3659 (local->rx_mcast_action_reg != 3660 !!(upd->global_mcast_stypes & action_mask)); 3661 local->probe_req_reg = upd->global_stypes & preq_mask; 3662 local->rx_mcast_action_reg = upd->global_mcast_stypes & action_mask; 3663 3664 intf_change = (sdata->vif.probe_req_reg != 3665 !!(upd->interface_stypes & preq_mask)) || 3666 (sdata->vif.rx_mcast_action_reg != 3667 !!(upd->interface_mcast_stypes & action_mask)); 3668 sdata->vif.probe_req_reg = upd->interface_stypes & preq_mask; 3669 sdata->vif.rx_mcast_action_reg = 3670 upd->interface_mcast_stypes & action_mask; 3671 3672 if (!local->open_count) 3673 return; 3674 3675 if (intf_change && ieee80211_sdata_running(sdata)) 3676 drv_config_iface_filter(local, sdata, 3677 sdata->vif.probe_req_reg ? 3678 FIF_PROBE_REQ : 0, 3679 FIF_PROBE_REQ); 3680 3681 if (global_change) 3682 ieee80211_configure_filter(local); 3683 } 3684 3685 static int ieee80211_set_antenna(struct wiphy *wiphy, u32 tx_ant, u32 rx_ant) 3686 { 3687 struct ieee80211_local *local = wiphy_priv(wiphy); 3688 3689 if (local->started) 3690 return -EOPNOTSUPP; 3691 3692 return drv_set_antenna(local, tx_ant, rx_ant); 3693 } 3694 3695 static int ieee80211_get_antenna(struct wiphy *wiphy, u32 *tx_ant, u32 *rx_ant) 3696 { 3697 struct ieee80211_local *local = wiphy_priv(wiphy); 3698 3699 return drv_get_antenna(local, tx_ant, rx_ant); 3700 } 3701 3702 static int ieee80211_set_rekey_data(struct wiphy *wiphy, 3703 struct net_device *dev, 3704 struct cfg80211_gtk_rekey_data *data) 3705 { 3706 struct ieee80211_local *local = wiphy_priv(wiphy); 3707 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 3708 3709 if (!local->ops->set_rekey_data) 3710 return -EOPNOTSUPP; 3711 3712 drv_set_rekey_data(local, sdata, data); 3713 3714 return 0; 3715 } 3716 3717 static int ieee80211_probe_client(struct wiphy *wiphy, struct net_device *dev, 3718 const u8 *peer, u64 *cookie) 3719 { 3720 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 3721 struct ieee80211_local *local = sdata->local; 3722 struct ieee80211_qos_hdr *nullfunc; 3723 struct sk_buff *skb; 3724 int size = sizeof(*nullfunc); 3725 __le16 fc; 3726 bool qos; 3727 struct ieee80211_tx_info *info; 3728 struct sta_info *sta; 3729 struct ieee80211_chanctx_conf *chanctx_conf; 3730 enum nl80211_band band; 3731 int ret; 3732 3733 /* the lock is needed to assign the cookie later */ 3734 mutex_lock(&local->mtx); 3735 3736 rcu_read_lock(); 3737 chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf); 3738 if (WARN_ON(!chanctx_conf)) { 3739 ret = -EINVAL; 3740 goto unlock; 3741 } 3742 band = chanctx_conf->def.chan->band; 3743 sta = sta_info_get_bss(sdata, peer); 3744 if (sta) { 3745 qos = sta->sta.wme; 3746 } else { 3747 ret = -ENOLINK; 3748 goto unlock; 3749 } 3750 3751 if (qos) { 3752 fc = cpu_to_le16(IEEE80211_FTYPE_DATA | 3753 IEEE80211_STYPE_QOS_NULLFUNC | 3754 IEEE80211_FCTL_FROMDS); 3755 } else { 3756 size -= 2; 3757 fc = cpu_to_le16(IEEE80211_FTYPE_DATA | 3758 IEEE80211_STYPE_NULLFUNC | 3759 IEEE80211_FCTL_FROMDS); 3760 } 3761 3762 skb = dev_alloc_skb(local->hw.extra_tx_headroom + size); 3763 if (!skb) { 3764 ret = -ENOMEM; 3765 goto unlock; 3766 } 3767 3768 skb->dev = dev; 3769 3770 skb_reserve(skb, local->hw.extra_tx_headroom); 3771 3772 nullfunc = skb_put(skb, size); 3773 nullfunc->frame_control = fc; 3774 nullfunc->duration_id = 0; 3775 memcpy(nullfunc->addr1, sta->sta.addr, ETH_ALEN); 3776 memcpy(nullfunc->addr2, sdata->vif.addr, ETH_ALEN); 3777 memcpy(nullfunc->addr3, sdata->vif.addr, ETH_ALEN); 3778 nullfunc->seq_ctrl = 0; 3779 3780 info = IEEE80211_SKB_CB(skb); 3781 3782 info->flags |= IEEE80211_TX_CTL_REQ_TX_STATUS | 3783 IEEE80211_TX_INTFL_NL80211_FRAME_TX; 3784 info->band = band; 3785 3786 skb_set_queue_mapping(skb, IEEE80211_AC_VO); 3787 skb->priority = 7; 3788 if (qos) 3789 nullfunc->qos_ctrl = cpu_to_le16(7); 3790 3791 ret = ieee80211_attach_ack_skb(local, skb, cookie, GFP_ATOMIC); 3792 if (ret) { 3793 kfree_skb(skb); 3794 goto unlock; 3795 } 3796 3797 local_bh_disable(); 3798 ieee80211_xmit(sdata, sta, skb); 3799 local_bh_enable(); 3800 3801 ret = 0; 3802 unlock: 3803 rcu_read_unlock(); 3804 mutex_unlock(&local->mtx); 3805 3806 return ret; 3807 } 3808 3809 static int ieee80211_cfg_get_channel(struct wiphy *wiphy, 3810 struct wireless_dev *wdev, 3811 struct cfg80211_chan_def *chandef) 3812 { 3813 struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev); 3814 struct ieee80211_local *local = wiphy_priv(wiphy); 3815 struct ieee80211_chanctx_conf *chanctx_conf; 3816 int ret = -ENODATA; 3817 3818 rcu_read_lock(); 3819 chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf); 3820 if (chanctx_conf) { 3821 *chandef = sdata->vif.bss_conf.chandef; 3822 ret = 0; 3823 } else if (local->open_count > 0 && 3824 local->open_count == local->monitors && 3825 sdata->vif.type == NL80211_IFTYPE_MONITOR) { 3826 if (local->use_chanctx) 3827 *chandef = local->monitor_chandef; 3828 else 3829 *chandef = local->_oper_chandef; 3830 ret = 0; 3831 } 3832 rcu_read_unlock(); 3833 3834 return ret; 3835 } 3836 3837 #ifdef CONFIG_PM 3838 static void ieee80211_set_wakeup(struct wiphy *wiphy, bool enabled) 3839 { 3840 drv_set_wakeup(wiphy_priv(wiphy), enabled); 3841 } 3842 #endif 3843 3844 static int ieee80211_set_qos_map(struct wiphy *wiphy, 3845 struct net_device *dev, 3846 struct cfg80211_qos_map *qos_map) 3847 { 3848 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 3849 struct mac80211_qos_map *new_qos_map, *old_qos_map; 3850 3851 if (qos_map) { 3852 new_qos_map = kzalloc(sizeof(*new_qos_map), GFP_KERNEL); 3853 if (!new_qos_map) 3854 return -ENOMEM; 3855 memcpy(&new_qos_map->qos_map, qos_map, sizeof(*qos_map)); 3856 } else { 3857 /* A NULL qos_map was passed to disable QoS mapping */ 3858 new_qos_map = NULL; 3859 } 3860 3861 old_qos_map = sdata_dereference(sdata->qos_map, sdata); 3862 rcu_assign_pointer(sdata->qos_map, new_qos_map); 3863 if (old_qos_map) 3864 kfree_rcu(old_qos_map, rcu_head); 3865 3866 return 0; 3867 } 3868 3869 static int ieee80211_set_ap_chanwidth(struct wiphy *wiphy, 3870 struct net_device *dev, 3871 struct cfg80211_chan_def *chandef) 3872 { 3873 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 3874 int ret; 3875 u32 changed = 0; 3876 3877 ret = ieee80211_vif_change_bandwidth(sdata, chandef, &changed); 3878 if (ret == 0) 3879 ieee80211_bss_info_change_notify(sdata, changed); 3880 3881 return ret; 3882 } 3883 3884 static int ieee80211_add_tx_ts(struct wiphy *wiphy, struct net_device *dev, 3885 u8 tsid, const u8 *peer, u8 up, 3886 u16 admitted_time) 3887 { 3888 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 3889 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; 3890 int ac = ieee802_1d_to_ac[up]; 3891 3892 if (sdata->vif.type != NL80211_IFTYPE_STATION) 3893 return -EOPNOTSUPP; 3894 3895 if (!(sdata->wmm_acm & BIT(up))) 3896 return -EINVAL; 3897 3898 if (ifmgd->tx_tspec[ac].admitted_time) 3899 return -EBUSY; 3900 3901 if (admitted_time) { 3902 ifmgd->tx_tspec[ac].admitted_time = 32 * admitted_time; 3903 ifmgd->tx_tspec[ac].tsid = tsid; 3904 ifmgd->tx_tspec[ac].up = up; 3905 } 3906 3907 return 0; 3908 } 3909 3910 static int ieee80211_del_tx_ts(struct wiphy *wiphy, struct net_device *dev, 3911 u8 tsid, const u8 *peer) 3912 { 3913 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 3914 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; 3915 struct ieee80211_local *local = wiphy_priv(wiphy); 3916 int ac; 3917 3918 for (ac = 0; ac < IEEE80211_NUM_ACS; ac++) { 3919 struct ieee80211_sta_tx_tspec *tx_tspec = &ifmgd->tx_tspec[ac]; 3920 3921 /* skip unused entries */ 3922 if (!tx_tspec->admitted_time) 3923 continue; 3924 3925 if (tx_tspec->tsid != tsid) 3926 continue; 3927 3928 /* due to this new packets will be reassigned to non-ACM ACs */ 3929 tx_tspec->up = -1; 3930 3931 /* Make sure that all packets have been sent to avoid to 3932 * restore the QoS params on packets that are still on the 3933 * queues. 3934 */ 3935 synchronize_net(); 3936 ieee80211_flush_queues(local, sdata, false); 3937 3938 /* restore the normal QoS parameters 3939 * (unconditionally to avoid races) 3940 */ 3941 tx_tspec->action = TX_TSPEC_ACTION_STOP_DOWNGRADE; 3942 tx_tspec->downgraded = false; 3943 ieee80211_sta_handle_tspec_ac_params(sdata); 3944 3945 /* finally clear all the data */ 3946 memset(tx_tspec, 0, sizeof(*tx_tspec)); 3947 3948 return 0; 3949 } 3950 3951 return -ENOENT; 3952 } 3953 3954 void ieee80211_nan_func_terminated(struct ieee80211_vif *vif, 3955 u8 inst_id, 3956 enum nl80211_nan_func_term_reason reason, 3957 gfp_t gfp) 3958 { 3959 struct ieee80211_sub_if_data *sdata = vif_to_sdata(vif); 3960 struct cfg80211_nan_func *func; 3961 u64 cookie; 3962 3963 if (WARN_ON(vif->type != NL80211_IFTYPE_NAN)) 3964 return; 3965 3966 spin_lock_bh(&sdata->u.nan.func_lock); 3967 3968 func = idr_find(&sdata->u.nan.function_inst_ids, inst_id); 3969 if (WARN_ON(!func)) { 3970 spin_unlock_bh(&sdata->u.nan.func_lock); 3971 return; 3972 } 3973 3974 cookie = func->cookie; 3975 idr_remove(&sdata->u.nan.function_inst_ids, inst_id); 3976 3977 spin_unlock_bh(&sdata->u.nan.func_lock); 3978 3979 cfg80211_free_nan_func(func); 3980 3981 cfg80211_nan_func_terminated(ieee80211_vif_to_wdev(vif), inst_id, 3982 reason, cookie, gfp); 3983 } 3984 EXPORT_SYMBOL(ieee80211_nan_func_terminated); 3985 3986 void ieee80211_nan_func_match(struct ieee80211_vif *vif, 3987 struct cfg80211_nan_match_params *match, 3988 gfp_t gfp) 3989 { 3990 struct ieee80211_sub_if_data *sdata = vif_to_sdata(vif); 3991 struct cfg80211_nan_func *func; 3992 3993 if (WARN_ON(vif->type != NL80211_IFTYPE_NAN)) 3994 return; 3995 3996 spin_lock_bh(&sdata->u.nan.func_lock); 3997 3998 func = idr_find(&sdata->u.nan.function_inst_ids, match->inst_id); 3999 if (WARN_ON(!func)) { 4000 spin_unlock_bh(&sdata->u.nan.func_lock); 4001 return; 4002 } 4003 match->cookie = func->cookie; 4004 4005 spin_unlock_bh(&sdata->u.nan.func_lock); 4006 4007 cfg80211_nan_match(ieee80211_vif_to_wdev(vif), match, gfp); 4008 } 4009 EXPORT_SYMBOL(ieee80211_nan_func_match); 4010 4011 static int ieee80211_set_multicast_to_unicast(struct wiphy *wiphy, 4012 struct net_device *dev, 4013 const bool enabled) 4014 { 4015 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 4016 4017 sdata->u.ap.multicast_to_unicast = enabled; 4018 4019 return 0; 4020 } 4021 4022 void ieee80211_fill_txq_stats(struct cfg80211_txq_stats *txqstats, 4023 struct txq_info *txqi) 4024 { 4025 if (!(txqstats->filled & BIT(NL80211_TXQ_STATS_BACKLOG_BYTES))) { 4026 txqstats->filled |= BIT(NL80211_TXQ_STATS_BACKLOG_BYTES); 4027 txqstats->backlog_bytes = txqi->tin.backlog_bytes; 4028 } 4029 4030 if (!(txqstats->filled & BIT(NL80211_TXQ_STATS_BACKLOG_PACKETS))) { 4031 txqstats->filled |= BIT(NL80211_TXQ_STATS_BACKLOG_PACKETS); 4032 txqstats->backlog_packets = txqi->tin.backlog_packets; 4033 } 4034 4035 if (!(txqstats->filled & BIT(NL80211_TXQ_STATS_FLOWS))) { 4036 txqstats->filled |= BIT(NL80211_TXQ_STATS_FLOWS); 4037 txqstats->flows = txqi->tin.flows; 4038 } 4039 4040 if (!(txqstats->filled & BIT(NL80211_TXQ_STATS_DROPS))) { 4041 txqstats->filled |= BIT(NL80211_TXQ_STATS_DROPS); 4042 txqstats->drops = txqi->cstats.drop_count; 4043 } 4044 4045 if (!(txqstats->filled & BIT(NL80211_TXQ_STATS_ECN_MARKS))) { 4046 txqstats->filled |= BIT(NL80211_TXQ_STATS_ECN_MARKS); 4047 txqstats->ecn_marks = txqi->cstats.ecn_mark; 4048 } 4049 4050 if (!(txqstats->filled & BIT(NL80211_TXQ_STATS_OVERLIMIT))) { 4051 txqstats->filled |= BIT(NL80211_TXQ_STATS_OVERLIMIT); 4052 txqstats->overlimit = txqi->tin.overlimit; 4053 } 4054 4055 if (!(txqstats->filled & BIT(NL80211_TXQ_STATS_COLLISIONS))) { 4056 txqstats->filled |= BIT(NL80211_TXQ_STATS_COLLISIONS); 4057 txqstats->collisions = txqi->tin.collisions; 4058 } 4059 4060 if (!(txqstats->filled & BIT(NL80211_TXQ_STATS_TX_BYTES))) { 4061 txqstats->filled |= BIT(NL80211_TXQ_STATS_TX_BYTES); 4062 txqstats->tx_bytes = txqi->tin.tx_bytes; 4063 } 4064 4065 if (!(txqstats->filled & BIT(NL80211_TXQ_STATS_TX_PACKETS))) { 4066 txqstats->filled |= BIT(NL80211_TXQ_STATS_TX_PACKETS); 4067 txqstats->tx_packets = txqi->tin.tx_packets; 4068 } 4069 } 4070 4071 static int ieee80211_get_txq_stats(struct wiphy *wiphy, 4072 struct wireless_dev *wdev, 4073 struct cfg80211_txq_stats *txqstats) 4074 { 4075 struct ieee80211_local *local = wiphy_priv(wiphy); 4076 struct ieee80211_sub_if_data *sdata; 4077 int ret = 0; 4078 4079 if (!local->ops->wake_tx_queue) 4080 return 1; 4081 4082 spin_lock_bh(&local->fq.lock); 4083 rcu_read_lock(); 4084 4085 if (wdev) { 4086 sdata = IEEE80211_WDEV_TO_SUB_IF(wdev); 4087 if (!sdata->vif.txq) { 4088 ret = 1; 4089 goto out; 4090 } 4091 ieee80211_fill_txq_stats(txqstats, to_txq_info(sdata->vif.txq)); 4092 } else { 4093 /* phy stats */ 4094 txqstats->filled |= BIT(NL80211_TXQ_STATS_BACKLOG_PACKETS) | 4095 BIT(NL80211_TXQ_STATS_BACKLOG_BYTES) | 4096 BIT(NL80211_TXQ_STATS_OVERLIMIT) | 4097 BIT(NL80211_TXQ_STATS_OVERMEMORY) | 4098 BIT(NL80211_TXQ_STATS_COLLISIONS) | 4099 BIT(NL80211_TXQ_STATS_MAX_FLOWS); 4100 txqstats->backlog_packets = local->fq.backlog; 4101 txqstats->backlog_bytes = local->fq.memory_usage; 4102 txqstats->overlimit = local->fq.overlimit; 4103 txqstats->overmemory = local->fq.overmemory; 4104 txqstats->collisions = local->fq.collisions; 4105 txqstats->max_flows = local->fq.flows_cnt; 4106 } 4107 4108 out: 4109 rcu_read_unlock(); 4110 spin_unlock_bh(&local->fq.lock); 4111 4112 return ret; 4113 } 4114 4115 static int 4116 ieee80211_get_ftm_responder_stats(struct wiphy *wiphy, 4117 struct net_device *dev, 4118 struct cfg80211_ftm_responder_stats *ftm_stats) 4119 { 4120 struct ieee80211_local *local = wiphy_priv(wiphy); 4121 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 4122 4123 return drv_get_ftm_responder_stats(local, sdata, ftm_stats); 4124 } 4125 4126 static int 4127 ieee80211_start_pmsr(struct wiphy *wiphy, struct wireless_dev *dev, 4128 struct cfg80211_pmsr_request *request) 4129 { 4130 struct ieee80211_local *local = wiphy_priv(wiphy); 4131 struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(dev); 4132 4133 return drv_start_pmsr(local, sdata, request); 4134 } 4135 4136 static void 4137 ieee80211_abort_pmsr(struct wiphy *wiphy, struct wireless_dev *dev, 4138 struct cfg80211_pmsr_request *request) 4139 { 4140 struct ieee80211_local *local = wiphy_priv(wiphy); 4141 struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(dev); 4142 4143 return drv_abort_pmsr(local, sdata, request); 4144 } 4145 4146 static int ieee80211_set_tid_config(struct wiphy *wiphy, 4147 struct net_device *dev, 4148 struct cfg80211_tid_config *tid_conf) 4149 { 4150 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 4151 struct sta_info *sta; 4152 int ret; 4153 4154 if (!sdata->local->ops->set_tid_config) 4155 return -EOPNOTSUPP; 4156 4157 if (!tid_conf->peer) 4158 return drv_set_tid_config(sdata->local, sdata, NULL, tid_conf); 4159 4160 mutex_lock(&sdata->local->sta_mtx); 4161 sta = sta_info_get_bss(sdata, tid_conf->peer); 4162 if (!sta) { 4163 mutex_unlock(&sdata->local->sta_mtx); 4164 return -ENOENT; 4165 } 4166 4167 ret = drv_set_tid_config(sdata->local, sdata, &sta->sta, tid_conf); 4168 mutex_unlock(&sdata->local->sta_mtx); 4169 4170 return ret; 4171 } 4172 4173 static int ieee80211_reset_tid_config(struct wiphy *wiphy, 4174 struct net_device *dev, 4175 const u8 *peer, u8 tids) 4176 { 4177 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 4178 struct sta_info *sta; 4179 int ret; 4180 4181 if (!sdata->local->ops->reset_tid_config) 4182 return -EOPNOTSUPP; 4183 4184 if (!peer) 4185 return drv_reset_tid_config(sdata->local, sdata, NULL, tids); 4186 4187 mutex_lock(&sdata->local->sta_mtx); 4188 sta = sta_info_get_bss(sdata, peer); 4189 if (!sta) { 4190 mutex_unlock(&sdata->local->sta_mtx); 4191 return -ENOENT; 4192 } 4193 4194 ret = drv_reset_tid_config(sdata->local, sdata, &sta->sta, tids); 4195 mutex_unlock(&sdata->local->sta_mtx); 4196 4197 return ret; 4198 } 4199 4200 static int ieee80211_set_sar_specs(struct wiphy *wiphy, 4201 struct cfg80211_sar_specs *sar) 4202 { 4203 struct ieee80211_local *local = wiphy_priv(wiphy); 4204 4205 if (!local->ops->set_sar_specs) 4206 return -EOPNOTSUPP; 4207 4208 return local->ops->set_sar_specs(&local->hw, sar); 4209 } 4210 4211 static int 4212 ieee80211_set_after_color_change_beacon(struct ieee80211_sub_if_data *sdata, 4213 u32 *changed) 4214 { 4215 switch (sdata->vif.type) { 4216 case NL80211_IFTYPE_AP: { 4217 int ret; 4218 4219 ret = ieee80211_assign_beacon(sdata, sdata->u.ap.next_beacon, 4220 NULL, NULL); 4221 kfree(sdata->u.ap.next_beacon); 4222 sdata->u.ap.next_beacon = NULL; 4223 4224 if (ret < 0) 4225 return ret; 4226 4227 *changed |= ret; 4228 break; 4229 } 4230 default: 4231 WARN_ON_ONCE(1); 4232 return -EINVAL; 4233 } 4234 4235 return 0; 4236 } 4237 4238 static int 4239 ieee80211_set_color_change_beacon(struct ieee80211_sub_if_data *sdata, 4240 struct cfg80211_color_change_settings *params, 4241 u32 *changed) 4242 { 4243 struct ieee80211_color_change_settings color_change = {}; 4244 int err; 4245 4246 switch (sdata->vif.type) { 4247 case NL80211_IFTYPE_AP: 4248 sdata->u.ap.next_beacon = 4249 cfg80211_beacon_dup(¶ms->beacon_next); 4250 if (!sdata->u.ap.next_beacon) 4251 return -ENOMEM; 4252 4253 if (params->count <= 1) 4254 break; 4255 4256 color_change.counter_offset_beacon = 4257 params->counter_offset_beacon; 4258 color_change.counter_offset_presp = 4259 params->counter_offset_presp; 4260 color_change.count = params->count; 4261 4262 err = ieee80211_assign_beacon(sdata, ¶ms->beacon_color_change, 4263 NULL, &color_change); 4264 if (err < 0) { 4265 kfree(sdata->u.ap.next_beacon); 4266 return err; 4267 } 4268 *changed |= err; 4269 break; 4270 default: 4271 return -EOPNOTSUPP; 4272 } 4273 4274 return 0; 4275 } 4276 4277 static void 4278 ieee80211_color_change_bss_config_notify(struct ieee80211_sub_if_data *sdata, 4279 u8 color, int enable, u32 changed) 4280 { 4281 sdata->vif.bss_conf.he_bss_color.color = color; 4282 sdata->vif.bss_conf.he_bss_color.enabled = enable; 4283 changed |= BSS_CHANGED_HE_BSS_COLOR; 4284 4285 ieee80211_bss_info_change_notify(sdata, changed); 4286 4287 if (!sdata->vif.bss_conf.nontransmitted && sdata->vif.mbssid_tx_vif) { 4288 struct ieee80211_sub_if_data *child; 4289 4290 mutex_lock(&sdata->local->iflist_mtx); 4291 list_for_each_entry(child, &sdata->local->interfaces, list) { 4292 if (child != sdata && child->vif.mbssid_tx_vif == &sdata->vif) { 4293 child->vif.bss_conf.he_bss_color.color = color; 4294 child->vif.bss_conf.he_bss_color.enabled = enable; 4295 ieee80211_bss_info_change_notify(child, 4296 BSS_CHANGED_HE_BSS_COLOR); 4297 } 4298 } 4299 mutex_unlock(&sdata->local->iflist_mtx); 4300 } 4301 } 4302 4303 static int ieee80211_color_change_finalize(struct ieee80211_sub_if_data *sdata) 4304 { 4305 struct ieee80211_local *local = sdata->local; 4306 u32 changed = 0; 4307 int err; 4308 4309 sdata_assert_lock(sdata); 4310 lockdep_assert_held(&local->mtx); 4311 4312 sdata->vif.color_change_active = false; 4313 4314 err = ieee80211_set_after_color_change_beacon(sdata, &changed); 4315 if (err) { 4316 cfg80211_color_change_aborted_notify(sdata->dev); 4317 return err; 4318 } 4319 4320 ieee80211_color_change_bss_config_notify(sdata, 4321 sdata->vif.color_change_color, 4322 1, changed); 4323 cfg80211_color_change_notify(sdata->dev); 4324 4325 return 0; 4326 } 4327 4328 void ieee80211_color_change_finalize_work(struct work_struct *work) 4329 { 4330 struct ieee80211_sub_if_data *sdata = 4331 container_of(work, struct ieee80211_sub_if_data, 4332 color_change_finalize_work); 4333 struct ieee80211_local *local = sdata->local; 4334 4335 sdata_lock(sdata); 4336 mutex_lock(&local->mtx); 4337 4338 /* AP might have been stopped while waiting for the lock. */ 4339 if (!sdata->vif.color_change_active) 4340 goto unlock; 4341 4342 if (!ieee80211_sdata_running(sdata)) 4343 goto unlock; 4344 4345 ieee80211_color_change_finalize(sdata); 4346 4347 unlock: 4348 mutex_unlock(&local->mtx); 4349 sdata_unlock(sdata); 4350 } 4351 4352 void ieee80211_color_change_finish(struct ieee80211_vif *vif) 4353 { 4354 struct ieee80211_sub_if_data *sdata = vif_to_sdata(vif); 4355 4356 ieee80211_queue_work(&sdata->local->hw, 4357 &sdata->color_change_finalize_work); 4358 } 4359 EXPORT_SYMBOL_GPL(ieee80211_color_change_finish); 4360 4361 void 4362 ieeee80211_obss_color_collision_notify(struct ieee80211_vif *vif, 4363 u64 color_bitmap) 4364 { 4365 struct ieee80211_sub_if_data *sdata = vif_to_sdata(vif); 4366 4367 if (sdata->vif.color_change_active || sdata->vif.csa_active) 4368 return; 4369 4370 cfg80211_obss_color_collision_notify(sdata->dev, color_bitmap); 4371 } 4372 EXPORT_SYMBOL_GPL(ieeee80211_obss_color_collision_notify); 4373 4374 static int 4375 ieee80211_color_change(struct wiphy *wiphy, struct net_device *dev, 4376 struct cfg80211_color_change_settings *params) 4377 { 4378 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 4379 struct ieee80211_local *local = sdata->local; 4380 u32 changed = 0; 4381 int err; 4382 4383 sdata_assert_lock(sdata); 4384 4385 if (sdata->vif.bss_conf.nontransmitted) 4386 return -EINVAL; 4387 4388 mutex_lock(&local->mtx); 4389 4390 /* don't allow another color change if one is already active or if csa 4391 * is active 4392 */ 4393 if (sdata->vif.color_change_active || sdata->vif.csa_active) { 4394 err = -EBUSY; 4395 goto out; 4396 } 4397 4398 err = ieee80211_set_color_change_beacon(sdata, params, &changed); 4399 if (err) 4400 goto out; 4401 4402 sdata->vif.color_change_active = true; 4403 sdata->vif.color_change_color = params->color; 4404 4405 cfg80211_color_change_started_notify(sdata->dev, params->count); 4406 4407 if (changed) 4408 ieee80211_color_change_bss_config_notify(sdata, 0, 0, changed); 4409 else 4410 /* if the beacon didn't change, we can finalize immediately */ 4411 ieee80211_color_change_finalize(sdata); 4412 4413 out: 4414 mutex_unlock(&local->mtx); 4415 4416 return err; 4417 } 4418 4419 static int 4420 ieee80211_set_radar_background(struct wiphy *wiphy, 4421 struct cfg80211_chan_def *chandef) 4422 { 4423 struct ieee80211_local *local = wiphy_priv(wiphy); 4424 4425 if (!local->ops->set_radar_background) 4426 return -EOPNOTSUPP; 4427 4428 return local->ops->set_radar_background(&local->hw, chandef); 4429 } 4430 4431 const struct cfg80211_ops mac80211_config_ops = { 4432 .add_virtual_intf = ieee80211_add_iface, 4433 .del_virtual_intf = ieee80211_del_iface, 4434 .change_virtual_intf = ieee80211_change_iface, 4435 .start_p2p_device = ieee80211_start_p2p_device, 4436 .stop_p2p_device = ieee80211_stop_p2p_device, 4437 .add_key = ieee80211_add_key, 4438 .del_key = ieee80211_del_key, 4439 .get_key = ieee80211_get_key, 4440 .set_default_key = ieee80211_config_default_key, 4441 .set_default_mgmt_key = ieee80211_config_default_mgmt_key, 4442 .set_default_beacon_key = ieee80211_config_default_beacon_key, 4443 .start_ap = ieee80211_start_ap, 4444 .change_beacon = ieee80211_change_beacon, 4445 .stop_ap = ieee80211_stop_ap, 4446 .add_station = ieee80211_add_station, 4447 .del_station = ieee80211_del_station, 4448 .change_station = ieee80211_change_station, 4449 .get_station = ieee80211_get_station, 4450 .dump_station = ieee80211_dump_station, 4451 .dump_survey = ieee80211_dump_survey, 4452 #ifdef CONFIG_MAC80211_MESH 4453 .add_mpath = ieee80211_add_mpath, 4454 .del_mpath = ieee80211_del_mpath, 4455 .change_mpath = ieee80211_change_mpath, 4456 .get_mpath = ieee80211_get_mpath, 4457 .dump_mpath = ieee80211_dump_mpath, 4458 .get_mpp = ieee80211_get_mpp, 4459 .dump_mpp = ieee80211_dump_mpp, 4460 .update_mesh_config = ieee80211_update_mesh_config, 4461 .get_mesh_config = ieee80211_get_mesh_config, 4462 .join_mesh = ieee80211_join_mesh, 4463 .leave_mesh = ieee80211_leave_mesh, 4464 #endif 4465 .join_ocb = ieee80211_join_ocb, 4466 .leave_ocb = ieee80211_leave_ocb, 4467 .change_bss = ieee80211_change_bss, 4468 .set_txq_params = ieee80211_set_txq_params, 4469 .set_monitor_channel = ieee80211_set_monitor_channel, 4470 .suspend = ieee80211_suspend, 4471 .resume = ieee80211_resume, 4472 .scan = ieee80211_scan, 4473 .abort_scan = ieee80211_abort_scan, 4474 .sched_scan_start = ieee80211_sched_scan_start, 4475 .sched_scan_stop = ieee80211_sched_scan_stop, 4476 .auth = ieee80211_auth, 4477 .assoc = ieee80211_assoc, 4478 .deauth = ieee80211_deauth, 4479 .disassoc = ieee80211_disassoc, 4480 .join_ibss = ieee80211_join_ibss, 4481 .leave_ibss = ieee80211_leave_ibss, 4482 .set_mcast_rate = ieee80211_set_mcast_rate, 4483 .set_wiphy_params = ieee80211_set_wiphy_params, 4484 .set_tx_power = ieee80211_set_tx_power, 4485 .get_tx_power = ieee80211_get_tx_power, 4486 .rfkill_poll = ieee80211_rfkill_poll, 4487 CFG80211_TESTMODE_CMD(ieee80211_testmode_cmd) 4488 CFG80211_TESTMODE_DUMP(ieee80211_testmode_dump) 4489 .set_power_mgmt = ieee80211_set_power_mgmt, 4490 .set_bitrate_mask = ieee80211_set_bitrate_mask, 4491 .remain_on_channel = ieee80211_remain_on_channel, 4492 .cancel_remain_on_channel = ieee80211_cancel_remain_on_channel, 4493 .mgmt_tx = ieee80211_mgmt_tx, 4494 .mgmt_tx_cancel_wait = ieee80211_mgmt_tx_cancel_wait, 4495 .set_cqm_rssi_config = ieee80211_set_cqm_rssi_config, 4496 .set_cqm_rssi_range_config = ieee80211_set_cqm_rssi_range_config, 4497 .update_mgmt_frame_registrations = 4498 ieee80211_update_mgmt_frame_registrations, 4499 .set_antenna = ieee80211_set_antenna, 4500 .get_antenna = ieee80211_get_antenna, 4501 .set_rekey_data = ieee80211_set_rekey_data, 4502 .tdls_oper = ieee80211_tdls_oper, 4503 .tdls_mgmt = ieee80211_tdls_mgmt, 4504 .tdls_channel_switch = ieee80211_tdls_channel_switch, 4505 .tdls_cancel_channel_switch = ieee80211_tdls_cancel_channel_switch, 4506 .probe_client = ieee80211_probe_client, 4507 .set_noack_map = ieee80211_set_noack_map, 4508 #ifdef CONFIG_PM 4509 .set_wakeup = ieee80211_set_wakeup, 4510 #endif 4511 .get_channel = ieee80211_cfg_get_channel, 4512 .start_radar_detection = ieee80211_start_radar_detection, 4513 .end_cac = ieee80211_end_cac, 4514 .channel_switch = ieee80211_channel_switch, 4515 .set_qos_map = ieee80211_set_qos_map, 4516 .set_ap_chanwidth = ieee80211_set_ap_chanwidth, 4517 .add_tx_ts = ieee80211_add_tx_ts, 4518 .del_tx_ts = ieee80211_del_tx_ts, 4519 .start_nan = ieee80211_start_nan, 4520 .stop_nan = ieee80211_stop_nan, 4521 .nan_change_conf = ieee80211_nan_change_conf, 4522 .add_nan_func = ieee80211_add_nan_func, 4523 .del_nan_func = ieee80211_del_nan_func, 4524 .set_multicast_to_unicast = ieee80211_set_multicast_to_unicast, 4525 .tx_control_port = ieee80211_tx_control_port, 4526 .get_txq_stats = ieee80211_get_txq_stats, 4527 .get_ftm_responder_stats = ieee80211_get_ftm_responder_stats, 4528 .start_pmsr = ieee80211_start_pmsr, 4529 .abort_pmsr = ieee80211_abort_pmsr, 4530 .probe_mesh_link = ieee80211_probe_mesh_link, 4531 .set_tid_config = ieee80211_set_tid_config, 4532 .reset_tid_config = ieee80211_reset_tid_config, 4533 .set_sar_specs = ieee80211_set_sar_specs, 4534 .color_change = ieee80211_color_change, 4535 .set_radar_background = ieee80211_set_radar_background, 4536 }; 4537