1// SPDX-License-Identifier: GPL-2.0 OR BSD-3-Clause 2/* 3 * Copyright (C) 2012-2014, 2018-2023 Intel Corporation 4 * Copyright (C) 2013-2014 Intel Mobile Communications GmbH 5 * Copyright (C) 2015-2017 Intel Deutschland GmbH 6 */ 7#include <linux/etherdevice.h> 8#include <linux/crc32.h> 9#include <net/mac80211.h> 10#include "iwl-io.h" 11#include "iwl-prph.h" 12#include "fw-api.h" 13#include "mvm.h" 14#include "time-event.h" 15 16const u8 iwl_mvm_ac_to_tx_fifo[] = { 17 IWL_MVM_TX_FIFO_VO, 18 IWL_MVM_TX_FIFO_VI, 19 IWL_MVM_TX_FIFO_BE, 20 IWL_MVM_TX_FIFO_BK, 21}; 22 23const u8 iwl_mvm_ac_to_gen2_tx_fifo[] = { 24 IWL_GEN2_EDCA_TX_FIFO_VO, 25 IWL_GEN2_EDCA_TX_FIFO_VI, 26 IWL_GEN2_EDCA_TX_FIFO_BE, 27 IWL_GEN2_EDCA_TX_FIFO_BK, 28 IWL_GEN2_TRIG_TX_FIFO_VO, 29 IWL_GEN2_TRIG_TX_FIFO_VI, 30 IWL_GEN2_TRIG_TX_FIFO_BE, 31 IWL_GEN2_TRIG_TX_FIFO_BK, 32}; 33 34struct iwl_mvm_mac_iface_iterator_data { 35 struct iwl_mvm *mvm; 36 struct ieee80211_vif *vif; 37 unsigned long available_mac_ids[BITS_TO_LONGS(NUM_MAC_INDEX_DRIVER)]; 38 unsigned long available_tsf_ids[BITS_TO_LONGS(NUM_TSF_IDS)]; 39 enum iwl_tsf_id preferred_tsf; 40 bool found_vif; 41}; 42 43static void iwl_mvm_mac_tsf_id_iter(void *_data, u8 *mac, 44 struct ieee80211_vif *vif) 45{ 46 struct iwl_mvm_mac_iface_iterator_data *data = _data; 47 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 48 u16 min_bi; 49 50 /* Skip the interface for which we are trying to assign a tsf_id */ 51 if (vif == data->vif) 52 return; 53 54 /* 55 * The TSF is a hardware/firmware resource, there are 4 and 56 * the driver should assign and free them as needed. However, 57 * there are cases where 2 MACs should share the same TSF ID 58 * for the purpose of clock sync, an optimization to avoid 59 * clock drift causing overlapping TBTTs/DTIMs for a GO and 60 * client in the system. 61 * 62 * The firmware will decide according to the MAC type which 63 * will be the leader and follower. Clients that need to sync 64 * with a remote station will be the leader, and an AP or GO 65 * will be the follower. 66 * 67 * Depending on the new interface type it can be following 68 * or become the leader of an existing interface. 69 */ 70 switch (data->vif->type) { 71 case NL80211_IFTYPE_STATION: 72 /* 73 * The new interface is a client, so if the one we're iterating 74 * is an AP, and the beacon interval of the AP is a multiple or 75 * divisor of the beacon interval of the client, the same TSF 76 * should be used to avoid drift between the new client and 77 * existing AP. The existing AP will get drift updates from the 78 * new client context in this case. 79 */ 80 if (vif->type != NL80211_IFTYPE_AP || 81 data->preferred_tsf != NUM_TSF_IDS || 82 !test_bit(mvmvif->tsf_id, data->available_tsf_ids)) 83 break; 84 85 min_bi = min(data->vif->bss_conf.beacon_int, 86 vif->bss_conf.beacon_int); 87 88 if (!min_bi) 89 break; 90 91 if ((data->vif->bss_conf.beacon_int - 92 vif->bss_conf.beacon_int) % min_bi == 0) { 93 data->preferred_tsf = mvmvif->tsf_id; 94 return; 95 } 96 break; 97 98 case NL80211_IFTYPE_AP: 99 /* 100 * The new interface is AP/GO, so if its beacon interval is a 101 * multiple or a divisor of the beacon interval of an existing 102 * interface, it should get drift updates from an existing 103 * client or use the same TSF as an existing GO. There's no 104 * drift between TSFs internally but if they used different 105 * TSFs then a new client MAC could update one of them and 106 * cause drift that way. 107 */ 108 if ((vif->type != NL80211_IFTYPE_AP && 109 vif->type != NL80211_IFTYPE_STATION) || 110 data->preferred_tsf != NUM_TSF_IDS || 111 !test_bit(mvmvif->tsf_id, data->available_tsf_ids)) 112 break; 113 114 min_bi = min(data->vif->bss_conf.beacon_int, 115 vif->bss_conf.beacon_int); 116 117 if (!min_bi) 118 break; 119 120 if ((data->vif->bss_conf.beacon_int - 121 vif->bss_conf.beacon_int) % min_bi == 0) { 122 data->preferred_tsf = mvmvif->tsf_id; 123 return; 124 } 125 break; 126 default: 127 /* 128 * For all other interface types there's no need to 129 * take drift into account. Either they're exclusive 130 * like IBSS and monitor, or we don't care much about 131 * their TSF (like P2P Device), but we won't be able 132 * to share the TSF resource. 133 */ 134 break; 135 } 136 137 /* 138 * Unless we exited above, we can't share the TSF resource 139 * that the virtual interface we're iterating over is using 140 * with the new one, so clear the available bit and if this 141 * was the preferred one, reset that as well. 142 */ 143 __clear_bit(mvmvif->tsf_id, data->available_tsf_ids); 144 145 if (data->preferred_tsf == mvmvif->tsf_id) 146 data->preferred_tsf = NUM_TSF_IDS; 147} 148 149static void iwl_mvm_mac_iface_iterator(void *_data, u8 *mac, 150 struct ieee80211_vif *vif) 151{ 152 struct iwl_mvm_mac_iface_iterator_data *data = _data; 153 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 154 155 /* Iterator may already find the interface being added -- skip it */ 156 if (vif == data->vif) { 157 data->found_vif = true; 158 return; 159 } 160 161 /* Mark MAC IDs as used by clearing the available bit, and 162 * (below) mark TSFs as used if their existing use is not 163 * compatible with the new interface type. 164 * No locking or atomic bit operations are needed since the 165 * data is on the stack of the caller function. 166 */ 167 __clear_bit(mvmvif->id, data->available_mac_ids); 168 169 /* find a suitable tsf_id */ 170 iwl_mvm_mac_tsf_id_iter(_data, mac, vif); 171} 172 173void iwl_mvm_mac_ctxt_recalc_tsf_id(struct iwl_mvm *mvm, 174 struct ieee80211_vif *vif) 175{ 176 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 177 struct iwl_mvm_mac_iface_iterator_data data = { 178 .mvm = mvm, 179 .vif = vif, 180 .available_tsf_ids = { (1 << NUM_TSF_IDS) - 1 }, 181 /* no preference yet */ 182 .preferred_tsf = NUM_TSF_IDS, 183 }; 184 185 ieee80211_iterate_active_interfaces_atomic( 186 mvm->hw, IEEE80211_IFACE_ITER_RESUME_ALL, 187 iwl_mvm_mac_tsf_id_iter, &data); 188 189 if (data.preferred_tsf != NUM_TSF_IDS) 190 mvmvif->tsf_id = data.preferred_tsf; 191 else if (!test_bit(mvmvif->tsf_id, data.available_tsf_ids)) 192 mvmvif->tsf_id = find_first_bit(data.available_tsf_ids, 193 NUM_TSF_IDS); 194} 195 196int iwl_mvm_mac_ctxt_init(struct iwl_mvm *mvm, struct ieee80211_vif *vif) 197{ 198 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 199 struct iwl_mvm_mac_iface_iterator_data data = { 200 .mvm = mvm, 201 .vif = vif, 202 .available_mac_ids = { (1 << NUM_MAC_INDEX_DRIVER) - 1 }, 203 .available_tsf_ids = { (1 << NUM_TSF_IDS) - 1 }, 204 /* no preference yet */ 205 .preferred_tsf = NUM_TSF_IDS, 206 .found_vif = false, 207 }; 208 int ret, i; 209 210 lockdep_assert_held(&mvm->mutex); 211 212 /* 213 * Allocate a MAC ID and a TSF for this MAC, along with the queues 214 * and other resources. 215 */ 216 217 /* 218 * Before the iterator, we start with all MAC IDs and TSFs available. 219 * 220 * During iteration, all MAC IDs are cleared that are in use by other 221 * virtual interfaces, and all TSF IDs are cleared that can't be used 222 * by this new virtual interface because they're used by an interface 223 * that can't share it with the new one. 224 * At the same time, we check if there's a preferred TSF in the case 225 * that we should share it with another interface. 226 */ 227 228 /* MAC ID 0 should be used only for the managed/IBSS vif with non-MLO 229 * FW API 230 */ 231 if (!mvm->mld_api_is_used) { 232 switch (vif->type) { 233 case NL80211_IFTYPE_ADHOC: 234 break; 235 case NL80211_IFTYPE_STATION: 236 if (!vif->p2p) 237 break; 238 fallthrough; 239 default: 240 __clear_bit(0, data.available_mac_ids); 241 } 242 } 243 244 ieee80211_iterate_active_interfaces_atomic( 245 mvm->hw, IEEE80211_IFACE_ITER_RESUME_ALL, 246 iwl_mvm_mac_iface_iterator, &data); 247 248 /* 249 * In the case we're getting here during resume, it's similar to 250 * firmware restart, and with RESUME_ALL the iterator will find 251 * the vif being added already. 252 * We don't want to reassign any IDs in either case since doing 253 * so would probably assign different IDs (as interfaces aren't 254 * necessarily added in the same order), but the old IDs were 255 * preserved anyway, so skip ID assignment for both resume and 256 * recovery. 257 */ 258 if (data.found_vif) 259 return 0; 260 261 /* Therefore, in recovery, we can't get here */ 262 if (WARN_ON_ONCE(test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status))) 263 return -EBUSY; 264 265 mvmvif->id = find_first_bit(data.available_mac_ids, 266 NUM_MAC_INDEX_DRIVER); 267 if (mvmvif->id == NUM_MAC_INDEX_DRIVER) { 268 IWL_ERR(mvm, "Failed to init MAC context - no free ID!\n"); 269 ret = -EIO; 270 goto exit_fail; 271 } 272 273 if (data.preferred_tsf != NUM_TSF_IDS) 274 mvmvif->tsf_id = data.preferred_tsf; 275 else 276 mvmvif->tsf_id = find_first_bit(data.available_tsf_ids, 277 NUM_TSF_IDS); 278 if (mvmvif->tsf_id == NUM_TSF_IDS) { 279 IWL_ERR(mvm, "Failed to init MAC context - no free TSF!\n"); 280 ret = -EIO; 281 goto exit_fail; 282 } 283 284 mvmvif->color = 0; 285 286 INIT_LIST_HEAD(&mvmvif->time_event_data.list); 287 mvmvif->time_event_data.id = TE_MAX; 288 289 /* No need to allocate data queues to P2P Device MAC and NAN.*/ 290 if (vif->type == NL80211_IFTYPE_P2P_DEVICE) 291 return 0; 292 293 /* Allocate the CAB queue for softAP and GO interfaces */ 294 if (vif->type == NL80211_IFTYPE_AP || 295 vif->type == NL80211_IFTYPE_ADHOC) { 296 /* 297 * For TVQM this will be overwritten later with the FW assigned 298 * queue value (when queue is enabled). 299 */ 300 mvmvif->deflink.cab_queue = IWL_MVM_DQA_GCAST_QUEUE; 301 } 302 303 mvmvif->deflink.bcast_sta.sta_id = IWL_MVM_INVALID_STA; 304 mvmvif->deflink.mcast_sta.sta_id = IWL_MVM_INVALID_STA; 305 mvmvif->deflink.ap_sta_id = IWL_MVM_INVALID_STA; 306 307 for (i = 0; i < NUM_IWL_MVM_SMPS_REQ; i++) 308 mvmvif->deflink.smps_requests[i] = IEEE80211_SMPS_AUTOMATIC; 309 310 return 0; 311 312exit_fail: 313 memset(mvmvif, 0, sizeof(struct iwl_mvm_vif)); 314 return ret; 315} 316 317static void iwl_mvm_ack_rates(struct iwl_mvm *mvm, 318 struct ieee80211_vif *vif, 319 enum nl80211_band band, 320 u8 *cck_rates, u8 *ofdm_rates) 321{ 322 struct ieee80211_supported_band *sband; 323 unsigned long basic = vif->bss_conf.basic_rates; 324 int lowest_present_ofdm = 100; 325 int lowest_present_cck = 100; 326 u8 cck = 0; 327 u8 ofdm = 0; 328 int i; 329 330 sband = mvm->hw->wiphy->bands[band]; 331 332 for_each_set_bit(i, &basic, BITS_PER_LONG) { 333 int hw = sband->bitrates[i].hw_value; 334 if (hw >= IWL_FIRST_OFDM_RATE) { 335 ofdm |= BIT(hw - IWL_FIRST_OFDM_RATE); 336 if (lowest_present_ofdm > hw) 337 lowest_present_ofdm = hw; 338 } else { 339 BUILD_BUG_ON(IWL_FIRST_CCK_RATE != 0); 340 341 cck |= BIT(hw); 342 if (lowest_present_cck > hw) 343 lowest_present_cck = hw; 344 } 345 } 346 347 /* 348 * Now we've got the basic rates as bitmaps in the ofdm and cck 349 * variables. This isn't sufficient though, as there might not 350 * be all the right rates in the bitmap. E.g. if the only basic 351 * rates are 5.5 Mbps and 11 Mbps, we still need to add 1 Mbps 352 * and 6 Mbps because the 802.11-2007 standard says in 9.6: 353 * 354 * [...] a STA responding to a received frame shall transmit 355 * its Control Response frame [...] at the highest rate in the 356 * BSSBasicRateSet parameter that is less than or equal to the 357 * rate of the immediately previous frame in the frame exchange 358 * sequence ([...]) and that is of the same modulation class 359 * ([...]) as the received frame. If no rate contained in the 360 * BSSBasicRateSet parameter meets these conditions, then the 361 * control frame sent in response to a received frame shall be 362 * transmitted at the highest mandatory rate of the PHY that is 363 * less than or equal to the rate of the received frame, and 364 * that is of the same modulation class as the received frame. 365 * 366 * As a consequence, we need to add all mandatory rates that are 367 * lower than all of the basic rates to these bitmaps. 368 */ 369 370 if (IWL_RATE_24M_INDEX < lowest_present_ofdm) 371 ofdm |= IWL_RATE_BIT_MSK(24) >> IWL_FIRST_OFDM_RATE; 372 if (IWL_RATE_12M_INDEX < lowest_present_ofdm) 373 ofdm |= IWL_RATE_BIT_MSK(12) >> IWL_FIRST_OFDM_RATE; 374 /* 6M already there or needed so always add */ 375 ofdm |= IWL_RATE_BIT_MSK(6) >> IWL_FIRST_OFDM_RATE; 376 377 /* 378 * CCK is a bit more complex with DSSS vs. HR/DSSS vs. ERP. 379 * Note, however: 380 * - if no CCK rates are basic, it must be ERP since there must 381 * be some basic rates at all, so they're OFDM => ERP PHY 382 * (or we're in 5 GHz, and the cck bitmap will never be used) 383 * - if 11M is a basic rate, it must be ERP as well, so add 5.5M 384 * - if 5.5M is basic, 1M and 2M are mandatory 385 * - if 2M is basic, 1M is mandatory 386 * - if 1M is basic, that's the only valid ACK rate. 387 * As a consequence, it's not as complicated as it sounds, just add 388 * any lower rates to the ACK rate bitmap. 389 */ 390 if (IWL_RATE_11M_INDEX < lowest_present_cck) 391 cck |= IWL_RATE_BIT_MSK(11) >> IWL_FIRST_CCK_RATE; 392 if (IWL_RATE_5M_INDEX < lowest_present_cck) 393 cck |= IWL_RATE_BIT_MSK(5) >> IWL_FIRST_CCK_RATE; 394 if (IWL_RATE_2M_INDEX < lowest_present_cck) 395 cck |= IWL_RATE_BIT_MSK(2) >> IWL_FIRST_CCK_RATE; 396 /* 1M already there or needed so always add */ 397 cck |= IWL_RATE_BIT_MSK(1) >> IWL_FIRST_CCK_RATE; 398 399 *cck_rates = cck; 400 *ofdm_rates = ofdm; 401} 402 403void iwl_mvm_set_fw_basic_rates(struct iwl_mvm *mvm, struct ieee80211_vif *vif, 404 struct ieee80211_bss_conf *link_conf, 405 __le32 *cck_rates, __le32 *ofdm_rates) 406{ 407 struct ieee80211_chanctx_conf *chanctx; 408 u8 cck_ack_rates = 0, ofdm_ack_rates = 0; 409 410 rcu_read_lock(); 411 chanctx = rcu_dereference(link_conf->chanctx_conf); 412 iwl_mvm_ack_rates(mvm, vif, chanctx ? chanctx->def.chan->band 413 : NL80211_BAND_2GHZ, 414 &cck_ack_rates, &ofdm_ack_rates); 415 416 rcu_read_unlock(); 417 418 *cck_rates = cpu_to_le32((u32)cck_ack_rates); 419 *ofdm_rates = cpu_to_le32((u32)ofdm_ack_rates); 420} 421 422void iwl_mvm_set_fw_protection_flags(struct iwl_mvm *mvm, 423 struct ieee80211_vif *vif, 424 struct ieee80211_bss_conf *link_conf, 425 __le32 *protection_flags, u32 ht_flag, 426 u32 tgg_flag) 427{ 428 /* for both sta and ap, ht_operation_mode hold the protection_mode */ 429 u8 protection_mode = link_conf->ht_operation_mode & 430 IEEE80211_HT_OP_MODE_PROTECTION; 431 bool ht_enabled = !!(link_conf->ht_operation_mode & 432 IEEE80211_HT_OP_MODE_PROTECTION); 433 434 if (link_conf->use_cts_prot) 435 *protection_flags |= cpu_to_le32(tgg_flag); 436 437 IWL_DEBUG_RATE(mvm, "use_cts_prot %d, ht_operation_mode %d\n", 438 link_conf->use_cts_prot, 439 link_conf->ht_operation_mode); 440 441 if (!ht_enabled) 442 return; 443 444 IWL_DEBUG_RATE(mvm, "protection mode set to %d\n", protection_mode); 445 /* 446 * See section 9.23.3.1 of IEEE 80211-2012. 447 * Nongreenfield HT STAs Present is not supported. 448 */ 449 switch (protection_mode) { 450 case IEEE80211_HT_OP_MODE_PROTECTION_NONE: 451 break; 452 case IEEE80211_HT_OP_MODE_PROTECTION_NONMEMBER: 453 case IEEE80211_HT_OP_MODE_PROTECTION_NONHT_MIXED: 454 *protection_flags |= cpu_to_le32(ht_flag); 455 break; 456 case IEEE80211_HT_OP_MODE_PROTECTION_20MHZ: 457 /* Protect when channel wider than 20MHz */ 458 if (link_conf->chandef.width > NL80211_CHAN_WIDTH_20) 459 *protection_flags |= cpu_to_le32(ht_flag); 460 break; 461 default: 462 IWL_ERR(mvm, "Illegal protection mode %d\n", 463 protection_mode); 464 break; 465 } 466} 467 468void iwl_mvm_set_fw_qos_params(struct iwl_mvm *mvm, struct ieee80211_vif *vif, 469 struct ieee80211_bss_conf *link_conf, 470 struct iwl_ac_qos *ac, __le32 *qos_flags) 471{ 472 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 473 struct iwl_mvm_vif_link_info *mvm_link = 474 mvmvif->link[link_conf->link_id]; 475 int i; 476 477 if (!mvm_link) 478 return; 479 480 for (i = 0; i < IEEE80211_NUM_ACS; i++) { 481 u8 txf = iwl_mvm_mac_ac_to_tx_fifo(mvm, i); 482 u8 ucode_ac = iwl_mvm_mac80211_ac_to_ucode_ac(i); 483 484 ac[ucode_ac].cw_min = 485 cpu_to_le16(mvm_link->queue_params[i].cw_min); 486 ac[ucode_ac].cw_max = 487 cpu_to_le16(mvm_link->queue_params[i].cw_max); 488 ac[ucode_ac].edca_txop = 489 cpu_to_le16(mvm_link->queue_params[i].txop * 32); 490 ac[ucode_ac].aifsn = mvm_link->queue_params[i].aifs; 491 ac[ucode_ac].fifos_mask = BIT(txf); 492 } 493 494 if (link_conf->qos) 495 *qos_flags |= cpu_to_le32(MAC_QOS_FLG_UPDATE_EDCA); 496 497 if (link_conf->chandef.width != NL80211_CHAN_WIDTH_20_NOHT) 498 *qos_flags |= cpu_to_le32(MAC_QOS_FLG_TGN); 499} 500 501int iwl_mvm_get_mac_type(struct ieee80211_vif *vif) 502{ 503 u32 mac_type = FW_MAC_TYPE_BSS_STA; 504 505 switch (vif->type) { 506 case NL80211_IFTYPE_STATION: 507 if (vif->p2p) 508 mac_type = FW_MAC_TYPE_P2P_STA; 509 else 510 mac_type = FW_MAC_TYPE_BSS_STA; 511 break; 512 case NL80211_IFTYPE_AP: 513 mac_type = FW_MAC_TYPE_GO; 514 break; 515 case NL80211_IFTYPE_MONITOR: 516 mac_type = FW_MAC_TYPE_LISTENER; 517 break; 518 case NL80211_IFTYPE_P2P_DEVICE: 519 mac_type = FW_MAC_TYPE_P2P_DEVICE; 520 break; 521 case NL80211_IFTYPE_ADHOC: 522 mac_type = FW_MAC_TYPE_IBSS; 523 break; 524 default: 525 WARN_ON_ONCE(1); 526 } 527 return mac_type; 528} 529 530static void iwl_mvm_mac_ctxt_cmd_common(struct iwl_mvm *mvm, 531 struct ieee80211_vif *vif, 532 struct iwl_mac_ctx_cmd *cmd, 533 const u8 *bssid_override, 534 u32 action) 535{ 536 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 537 const u8 *bssid = bssid_override ?: vif->bss_conf.bssid; 538 u32 ht_flag; 539 540 cmd->id_and_color = cpu_to_le32(FW_CMD_ID_AND_COLOR(mvmvif->id, 541 mvmvif->color)); 542 cmd->action = cpu_to_le32(action); 543 cmd->mac_type = cpu_to_le32(iwl_mvm_get_mac_type(vif)); 544 545 cmd->tsf_id = cpu_to_le32(mvmvif->tsf_id); 546 547 memcpy(cmd->node_addr, vif->addr, ETH_ALEN); 548 549 if (bssid) 550 memcpy(cmd->bssid_addr, bssid, ETH_ALEN); 551 else 552 eth_broadcast_addr(cmd->bssid_addr); 553 554 iwl_mvm_set_fw_basic_rates(mvm, vif, &vif->bss_conf, &cmd->cck_rates, 555 &cmd->ofdm_rates); 556 557 cmd->cck_short_preamble = 558 cpu_to_le32(vif->bss_conf.use_short_preamble ? 559 MAC_FLG_SHORT_PREAMBLE : 0); 560 cmd->short_slot = 561 cpu_to_le32(vif->bss_conf.use_short_slot ? 562 MAC_FLG_SHORT_SLOT : 0); 563 564 cmd->filter_flags = 0; 565 566 iwl_mvm_set_fw_qos_params(mvm, vif, &vif->bss_conf, cmd->ac, 567 &cmd->qos_flags); 568 569 /* The fw does not distinguish between ht and fat */ 570 ht_flag = MAC_PROT_FLG_HT_PROT | MAC_PROT_FLG_FAT_PROT; 571 iwl_mvm_set_fw_protection_flags(mvm, vif, &vif->bss_conf, 572 &cmd->protection_flags, 573 ht_flag, MAC_PROT_FLG_TGG_PROTECT); 574} 575 576static int iwl_mvm_mac_ctxt_send_cmd(struct iwl_mvm *mvm, 577 struct iwl_mac_ctx_cmd *cmd) 578{ 579 int ret = iwl_mvm_send_cmd_pdu(mvm, MAC_CONTEXT_CMD, 0, 580 sizeof(*cmd), cmd); 581 if (ret) 582 IWL_ERR(mvm, "Failed to send MAC_CONTEXT_CMD (action:%d): %d\n", 583 le32_to_cpu(cmd->action), ret); 584 return ret; 585} 586 587void iwl_mvm_set_fw_dtim_tbtt(struct iwl_mvm *mvm, struct ieee80211_vif *vif, 588 struct ieee80211_bss_conf *link_conf, 589 __le64 *dtim_tsf, __le32 *dtim_time, 590 __le32 *assoc_beacon_arrive_time) 591{ 592 u32 dtim_offs; 593 594 /* 595 * The DTIM count counts down, so when it is N that means N 596 * more beacon intervals happen until the DTIM TBTT. Therefore 597 * add this to the current time. If that ends up being in the 598 * future, the firmware will handle it. 599 * 600 * Also note that the system_timestamp (which we get here as 601 * "sync_device_ts") and TSF timestamp aren't at exactly the 602 * same offset in the frame -- the TSF is at the first symbol 603 * of the TSF, the system timestamp is at signal acquisition 604 * time. This means there's an offset between them of at most 605 * a few hundred microseconds (24 * 8 bits + PLCP time gives 606 * 384us in the longest case), this is currently not relevant 607 * as the firmware wakes up around 2ms before the TBTT. 608 */ 609 dtim_offs = link_conf->sync_dtim_count * 610 link_conf->beacon_int; 611 /* convert TU to usecs */ 612 dtim_offs *= 1024; 613 614 *dtim_tsf = 615 cpu_to_le64(link_conf->sync_tsf + dtim_offs); 616 *dtim_time = 617 cpu_to_le32(link_conf->sync_device_ts + dtim_offs); 618 *assoc_beacon_arrive_time = 619 cpu_to_le32(link_conf->sync_device_ts); 620 621 IWL_DEBUG_INFO(mvm, "DTIM TBTT is 0x%llx/0x%x, offset %d\n", 622 le64_to_cpu(*dtim_tsf), 623 le32_to_cpu(*dtim_time), 624 dtim_offs); 625} 626 627__le32 iwl_mvm_mac_ctxt_cmd_p2p_sta_get_oppps_ctwin(struct iwl_mvm *mvm, 628 struct ieee80211_vif *vif) 629{ 630 struct ieee80211_p2p_noa_attr *noa = 631 &vif->bss_conf.p2p_noa_attr; 632 633 return cpu_to_le32(noa->oppps_ctwindow & 634 IEEE80211_P2P_OPPPS_CTWINDOW_MASK); 635} 636 637u32 iwl_mvm_mac_ctxt_cmd_sta_get_twt_policy(struct iwl_mvm *mvm, 638 struct ieee80211_vif *vif) 639{ 640 u32 twt_policy = 0; 641 642 if (vif->bss_conf.twt_requester && IWL_MVM_USE_TWT) 643 twt_policy |= TWT_SUPPORTED; 644 if (vif->bss_conf.twt_protected) 645 twt_policy |= PROTECTED_TWT_SUPPORTED; 646 if (vif->bss_conf.twt_broadcast) 647 twt_policy |= BROADCAST_TWT_SUPPORTED; 648 649 return twt_policy; 650} 651 652static int iwl_mvm_mac_ctxt_cmd_sta(struct iwl_mvm *mvm, 653 struct ieee80211_vif *vif, 654 u32 action, bool force_assoc_off, 655 const u8 *bssid_override) 656{ 657 struct iwl_mac_ctx_cmd cmd = {}; 658 struct iwl_mac_data_sta *ctxt_sta; 659 660 WARN_ON(vif->type != NL80211_IFTYPE_STATION); 661 662 /* Fill the common data for all mac context types */ 663 iwl_mvm_mac_ctxt_cmd_common(mvm, vif, &cmd, bssid_override, action); 664 665 /* 666 * We always want to hear MCAST frames, if we're not authorized yet, 667 * we'll drop them. 668 */ 669 cmd.filter_flags |= cpu_to_le32(MAC_FILTER_ACCEPT_GRP); 670 671 if (vif->p2p) { 672 cmd.p2p_sta.ctwin = 673 iwl_mvm_mac_ctxt_cmd_p2p_sta_get_oppps_ctwin(mvm, vif); 674 675 ctxt_sta = &cmd.p2p_sta.sta; 676 } else { 677 ctxt_sta = &cmd.sta; 678 } 679 680 /* We need the dtim_period to set the MAC as associated */ 681 if (vif->cfg.assoc && vif->bss_conf.dtim_period && 682 !force_assoc_off) { 683 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 684 685 iwl_mvm_set_fw_dtim_tbtt(mvm, vif, &vif->bss_conf, 686 &ctxt_sta->dtim_tsf, 687 &ctxt_sta->dtim_time, 688 &ctxt_sta->assoc_beacon_arrive_time); 689 690 ctxt_sta->is_assoc = cpu_to_le32(1); 691 692 if (!mvmvif->authorized && 693 fw_has_capa(&mvm->fw->ucode_capa, 694 IWL_UCODE_TLV_CAPA_COEX_HIGH_PRIO)) 695 ctxt_sta->data_policy |= 696 cpu_to_le32(COEX_HIGH_PRIORITY_ENABLE); 697 } else { 698 ctxt_sta->is_assoc = cpu_to_le32(0); 699 700 /* Allow beacons to pass through as long as we are not 701 * associated, or we do not have dtim period information. 702 */ 703 cmd.filter_flags |= cpu_to_le32(MAC_FILTER_IN_BEACON); 704 } 705 706 ctxt_sta->bi = cpu_to_le32(vif->bss_conf.beacon_int); 707 ctxt_sta->dtim_interval = cpu_to_le32(vif->bss_conf.beacon_int * 708 vif->bss_conf.dtim_period); 709 710 ctxt_sta->listen_interval = cpu_to_le32(mvm->hw->conf.listen_interval); 711 ctxt_sta->assoc_id = cpu_to_le32(vif->cfg.aid); 712 713 if (vif->probe_req_reg && vif->cfg.assoc && vif->p2p) 714 cmd.filter_flags |= cpu_to_le32(MAC_FILTER_IN_PROBE_REQUEST); 715 716 if (vif->bss_conf.he_support && !iwlwifi_mod_params.disable_11ax) { 717 cmd.filter_flags |= cpu_to_le32(MAC_FILTER_IN_11AX); 718 ctxt_sta->data_policy |= 719 cpu_to_le32(iwl_mvm_mac_ctxt_cmd_sta_get_twt_policy(mvm, vif)); 720 } 721 722 723 return iwl_mvm_mac_ctxt_send_cmd(mvm, &cmd); 724} 725 726static int iwl_mvm_mac_ctxt_cmd_listener(struct iwl_mvm *mvm, 727 struct ieee80211_vif *vif, 728 u32 action) 729{ 730 struct iwl_mac_ctx_cmd cmd = {}; 731 u32 tfd_queue_msk = 0; 732 int ret; 733 734 WARN_ON(vif->type != NL80211_IFTYPE_MONITOR); 735 736 iwl_mvm_mac_ctxt_cmd_common(mvm, vif, &cmd, NULL, action); 737 738 cmd.filter_flags = cpu_to_le32(MAC_FILTER_IN_PROMISC | 739 MAC_FILTER_IN_CONTROL_AND_MGMT | 740 MAC_FILTER_IN_BEACON | 741 MAC_FILTER_IN_PROBE_REQUEST | 742 MAC_FILTER_IN_CRC32 | 743 MAC_FILTER_ACCEPT_GRP); 744 ieee80211_hw_set(mvm->hw, RX_INCLUDES_FCS); 745 746 /* 747 * the queue mask is only relevant for old TX API, and 748 * mvm->snif_queue isn't set here (it's still set to 749 * IWL_MVM_INVALID_QUEUE so the BIT() of it is UB) 750 */ 751 if (!iwl_mvm_has_new_tx_api(mvm)) 752 tfd_queue_msk = BIT(mvm->snif_queue); 753 754 /* Allocate sniffer station */ 755 ret = iwl_mvm_allocate_int_sta(mvm, &mvm->snif_sta, tfd_queue_msk, 756 vif->type, IWL_STA_GENERAL_PURPOSE); 757 if (ret) 758 return ret; 759 760 return iwl_mvm_mac_ctxt_send_cmd(mvm, &cmd); 761} 762 763static int iwl_mvm_mac_ctxt_cmd_ibss(struct iwl_mvm *mvm, 764 struct ieee80211_vif *vif, 765 u32 action) 766{ 767 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 768 struct iwl_mac_ctx_cmd cmd = {}; 769 770 WARN_ON(vif->type != NL80211_IFTYPE_ADHOC); 771 772 iwl_mvm_mac_ctxt_cmd_common(mvm, vif, &cmd, NULL, action); 773 774 cmd.filter_flags = cpu_to_le32(MAC_FILTER_IN_BEACON | 775 MAC_FILTER_IN_PROBE_REQUEST | 776 MAC_FILTER_ACCEPT_GRP); 777 778 /* cmd.ibss.beacon_time/cmd.ibss.beacon_tsf are curently ignored */ 779 cmd.ibss.bi = cpu_to_le32(vif->bss_conf.beacon_int); 780 781 /* TODO: Assumes that the beacon id == mac context id */ 782 cmd.ibss.beacon_template = cpu_to_le32(mvmvif->id); 783 784 return iwl_mvm_mac_ctxt_send_cmd(mvm, &cmd); 785} 786 787struct iwl_mvm_go_iterator_data { 788 bool go_active; 789}; 790 791static void iwl_mvm_go_iterator(void *_data, u8 *mac, struct ieee80211_vif *vif) 792{ 793 struct iwl_mvm_go_iterator_data *data = _data; 794 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 795 796 if (vif->type == NL80211_IFTYPE_AP && vif->p2p && 797 mvmvif->ap_ibss_active) 798 data->go_active = true; 799} 800 801__le32 iwl_mac_ctxt_p2p_dev_has_extended_disc(struct iwl_mvm *mvm, 802 struct ieee80211_vif *vif) 803{ 804 struct iwl_mvm_go_iterator_data data = {}; 805 806 /* 807 * This flag should be set to true when the P2P Device is 808 * discoverable and there is at least another active P2P GO. Settings 809 * this flag will allow the P2P Device to be discoverable on other 810 * channels in addition to its listen channel. 811 * Note that this flag should not be set in other cases as it opens the 812 * Rx filters on all MAC and increases the number of interrupts. 813 */ 814 ieee80211_iterate_active_interfaces_atomic( 815 mvm->hw, IEEE80211_IFACE_ITER_RESUME_ALL, 816 iwl_mvm_go_iterator, &data); 817 818 return cpu_to_le32(data.go_active ? 1 : 0); 819} 820 821static int iwl_mvm_mac_ctxt_cmd_p2p_device(struct iwl_mvm *mvm, 822 struct ieee80211_vif *vif, 823 u32 action) 824{ 825 struct iwl_mac_ctx_cmd cmd = {}; 826 827 WARN_ON(vif->type != NL80211_IFTYPE_P2P_DEVICE); 828 829 iwl_mvm_mac_ctxt_cmd_common(mvm, vif, &cmd, NULL, action); 830 831 cmd.p2p_dev.is_disc_extended = 832 iwl_mac_ctxt_p2p_dev_has_extended_disc(mvm, vif); 833 834 /* Override the filter flags to accept only probe requests */ 835 cmd.filter_flags = cpu_to_le32(MAC_FILTER_IN_PROBE_REQUEST); 836 837 return iwl_mvm_mac_ctxt_send_cmd(mvm, &cmd); 838} 839 840void iwl_mvm_mac_ctxt_set_tim(struct iwl_mvm *mvm, 841 __le32 *tim_index, __le32 *tim_size, 842 u8 *beacon, u32 frame_size) 843{ 844 u32 tim_idx; 845 struct ieee80211_mgmt *mgmt = (struct ieee80211_mgmt *)beacon; 846 847 /* The index is relative to frame start but we start looking at the 848 * variable-length part of the beacon. */ 849 tim_idx = mgmt->u.beacon.variable - beacon; 850 851 /* Parse variable-length elements of beacon to find WLAN_EID_TIM */ 852 while ((tim_idx < (frame_size - 2)) && 853 (beacon[tim_idx] != WLAN_EID_TIM)) 854 tim_idx += beacon[tim_idx+1] + 2; 855 856 /* If TIM field was found, set variables */ 857 if ((tim_idx < (frame_size - 1)) && (beacon[tim_idx] == WLAN_EID_TIM)) { 858 *tim_index = cpu_to_le32(tim_idx); 859 *tim_size = cpu_to_le32((u32)beacon[tim_idx + 1]); 860 } else { 861 IWL_WARN(mvm, "Unable to find TIM Element in beacon\n"); 862 } 863} 864 865static u32 iwl_mvm_find_ie_offset(u8 *beacon, u8 eid, u32 frame_size) 866{ 867 struct ieee80211_mgmt *mgmt = (void *)beacon; 868 const u8 *ie; 869 870 if (WARN_ON_ONCE(frame_size <= (mgmt->u.beacon.variable - beacon))) 871 return 0; 872 873 frame_size -= mgmt->u.beacon.variable - beacon; 874 875 ie = cfg80211_find_ie(eid, mgmt->u.beacon.variable, frame_size); 876 if (!ie) 877 return 0; 878 879 return ie - beacon; 880} 881 882u8 iwl_mvm_mac_ctxt_get_lowest_rate(struct iwl_mvm *mvm, 883 struct ieee80211_tx_info *info, 884 struct ieee80211_vif *vif) 885{ 886 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 887 struct ieee80211_supported_band *sband; 888 unsigned long basic = vif->bss_conf.basic_rates; 889 u16 lowest_cck = IWL_RATE_COUNT, lowest_ofdm = IWL_RATE_COUNT; 890 u32 link_id = u32_get_bits(info->control.flags, 891 IEEE80211_TX_CTRL_MLO_LINK); 892 u8 band = info->band; 893 u8 rate; 894 u32 i; 895 896 if (link_id == IEEE80211_LINK_UNSPECIFIED && ieee80211_vif_is_mld(vif)) { 897 for (i = 0; i < ARRAY_SIZE(mvmvif->link); i++) { 898 if (!mvmvif->link[i]) 899 continue; 900 /* shouldn't do this when >1 link is active */ 901 WARN_ON_ONCE(link_id != IEEE80211_LINK_UNSPECIFIED); 902 link_id = i; 903 } 904 } 905 906 if (link_id < IEEE80211_LINK_UNSPECIFIED) { 907 struct ieee80211_bss_conf *link_conf; 908 909 rcu_read_lock(); 910 link_conf = rcu_dereference(vif->link_conf[link_id]); 911 if (link_conf) { 912 basic = link_conf->basic_rates; 913 if (link_conf->chandef.chan) 914 band = link_conf->chandef.chan->band; 915 } 916 rcu_read_unlock(); 917 } 918 919 sband = mvm->hw->wiphy->bands[band]; 920 for_each_set_bit(i, &basic, BITS_PER_LONG) { 921 u16 hw = sband->bitrates[i].hw_value; 922 923 if (hw >= IWL_FIRST_OFDM_RATE) { 924 if (lowest_ofdm > hw) 925 lowest_ofdm = hw; 926 } else if (lowest_cck > hw) { 927 lowest_cck = hw; 928 } 929 } 930 931 if (band == NL80211_BAND_2GHZ && !vif->p2p && 932 vif->type != NL80211_IFTYPE_P2P_DEVICE && 933 !(info->flags & IEEE80211_TX_CTL_NO_CCK_RATE)) { 934 if (lowest_cck != IWL_RATE_COUNT) 935 rate = lowest_cck; 936 else if (lowest_ofdm != IWL_RATE_COUNT) 937 rate = lowest_ofdm; 938 else 939 rate = IWL_RATE_1M_INDEX; 940 } else if (lowest_ofdm != IWL_RATE_COUNT) { 941 rate = lowest_ofdm; 942 } else { 943 rate = IWL_RATE_6M_INDEX; 944 } 945 946 return rate; 947} 948 949u16 iwl_mvm_mac_ctxt_get_beacon_flags(const struct iwl_fw *fw, u8 rate_idx) 950{ 951 u16 flags = iwl_mvm_mac80211_idx_to_hwrate(fw, rate_idx); 952 bool is_new_rate = iwl_fw_lookup_cmd_ver(fw, BEACON_TEMPLATE_CMD, 0) > 10; 953 954 if (rate_idx <= IWL_FIRST_CCK_RATE) 955 flags |= is_new_rate ? IWL_MAC_BEACON_CCK 956 : IWL_MAC_BEACON_CCK_V1; 957 958 return flags; 959} 960 961u8 iwl_mvm_mac_ctxt_get_beacon_rate(struct iwl_mvm *mvm, 962 struct ieee80211_tx_info *info, 963 struct ieee80211_vif *vif) 964{ 965 struct ieee80211_supported_band *sband = 966 mvm->hw->wiphy->bands[info->band]; 967 u32 legacy = vif->bss_conf.beacon_tx_rate.control[info->band].legacy; 968 969 /* if beacon rate was configured try using it */ 970 if (hweight32(legacy) == 1) { 971 u32 rate = ffs(legacy) - 1; 972 973 return sband->bitrates[rate].hw_value; 974 } 975 976 return iwl_mvm_mac_ctxt_get_lowest_rate(mvm, info, vif); 977} 978 979static void iwl_mvm_mac_ctxt_set_tx(struct iwl_mvm *mvm, 980 struct ieee80211_vif *vif, 981 struct sk_buff *beacon, 982 struct iwl_tx_cmd *tx) 983{ 984 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 985 struct ieee80211_tx_info *info; 986 u8 rate; 987 u32 tx_flags; 988 989 info = IEEE80211_SKB_CB(beacon); 990 991 /* Set up TX command fields */ 992 tx->len = cpu_to_le16((u16)beacon->len); 993 tx->sta_id = mvmvif->deflink.bcast_sta.sta_id; 994 tx->life_time = cpu_to_le32(TX_CMD_LIFE_TIME_INFINITE); 995 tx_flags = TX_CMD_FLG_SEQ_CTL | TX_CMD_FLG_TSF; 996 tx_flags |= 997 iwl_mvm_bt_coex_tx_prio(mvm, (void *)beacon->data, info, 0) << 998 TX_CMD_FLG_BT_PRIO_POS; 999 tx->tx_flags = cpu_to_le32(tx_flags); 1000 1001 if (!fw_has_capa(&mvm->fw->ucode_capa, 1002 IWL_UCODE_TLV_CAPA_BEACON_ANT_SELECTION)) 1003 iwl_mvm_toggle_tx_ant(mvm, &mvm->mgmt_last_antenna_idx); 1004 1005 tx->rate_n_flags = 1006 cpu_to_le32(BIT(mvm->mgmt_last_antenna_idx) << 1007 RATE_MCS_ANT_POS); 1008 1009 rate = iwl_mvm_mac_ctxt_get_beacon_rate(mvm, info, vif); 1010 1011 tx->rate_n_flags |= 1012 cpu_to_le32(iwl_mvm_mac80211_idx_to_hwrate(mvm->fw, rate)); 1013 if (rate == IWL_FIRST_CCK_RATE) 1014 tx->rate_n_flags |= cpu_to_le32(RATE_MCS_CCK_MSK_V1); 1015 1016} 1017 1018int iwl_mvm_mac_ctxt_send_beacon_cmd(struct iwl_mvm *mvm, 1019 struct sk_buff *beacon, 1020 void *data, int len) 1021{ 1022 struct iwl_host_cmd cmd = { 1023 .id = BEACON_TEMPLATE_CMD, 1024 .flags = CMD_ASYNC, 1025 }; 1026 1027 cmd.len[0] = len; 1028 cmd.data[0] = data; 1029 cmd.dataflags[0] = 0; 1030 cmd.len[1] = beacon->len; 1031 cmd.data[1] = beacon->data; 1032 cmd.dataflags[1] = IWL_HCMD_DFL_DUP; 1033 1034 return iwl_mvm_send_cmd(mvm, &cmd); 1035} 1036 1037static int iwl_mvm_mac_ctxt_send_beacon_v6(struct iwl_mvm *mvm, 1038 struct ieee80211_vif *vif, 1039 struct sk_buff *beacon) 1040{ 1041 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 1042 struct iwl_mac_beacon_cmd_v6 beacon_cmd = {}; 1043 1044 iwl_mvm_mac_ctxt_set_tx(mvm, vif, beacon, &beacon_cmd.tx); 1045 1046 beacon_cmd.template_id = cpu_to_le32((u32)mvmvif->id); 1047 1048 if (vif->type == NL80211_IFTYPE_AP) 1049 iwl_mvm_mac_ctxt_set_tim(mvm, &beacon_cmd.tim_idx, 1050 &beacon_cmd.tim_size, 1051 beacon->data, beacon->len); 1052 1053 return iwl_mvm_mac_ctxt_send_beacon_cmd(mvm, beacon, &beacon_cmd, 1054 sizeof(beacon_cmd)); 1055} 1056 1057static int iwl_mvm_mac_ctxt_send_beacon_v7(struct iwl_mvm *mvm, 1058 struct ieee80211_vif *vif, 1059 struct sk_buff *beacon) 1060{ 1061 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 1062 struct iwl_mac_beacon_cmd_v7 beacon_cmd = {}; 1063 1064 iwl_mvm_mac_ctxt_set_tx(mvm, vif, beacon, &beacon_cmd.tx); 1065 1066 beacon_cmd.template_id = cpu_to_le32((u32)mvmvif->id); 1067 1068 if (vif->type == NL80211_IFTYPE_AP) 1069 iwl_mvm_mac_ctxt_set_tim(mvm, &beacon_cmd.tim_idx, 1070 &beacon_cmd.tim_size, 1071 beacon->data, beacon->len); 1072 1073 beacon_cmd.csa_offset = 1074 cpu_to_le32(iwl_mvm_find_ie_offset(beacon->data, 1075 WLAN_EID_CHANNEL_SWITCH, 1076 beacon->len)); 1077 beacon_cmd.ecsa_offset = 1078 cpu_to_le32(iwl_mvm_find_ie_offset(beacon->data, 1079 WLAN_EID_EXT_CHANSWITCH_ANN, 1080 beacon->len)); 1081 1082 return iwl_mvm_mac_ctxt_send_beacon_cmd(mvm, beacon, &beacon_cmd, 1083 sizeof(beacon_cmd)); 1084} 1085 1086static int iwl_mvm_mac_ctxt_send_beacon_v9(struct iwl_mvm *mvm, 1087 struct ieee80211_vif *vif, 1088 struct sk_buff *beacon, 1089 struct ieee80211_bss_conf *link_conf) 1090{ 1091 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 1092 struct ieee80211_tx_info *info = IEEE80211_SKB_CB(beacon); 1093 struct iwl_mac_beacon_cmd beacon_cmd = {}; 1094 u8 rate = iwl_mvm_mac_ctxt_get_beacon_rate(mvm, info, vif); 1095 u16 flags; 1096 struct ieee80211_chanctx_conf *ctx; 1097 int channel; 1098 flags = iwl_mvm_mac_ctxt_get_beacon_flags(mvm->fw, rate); 1099 1100 /* Enable FILS on PSC channels only */ 1101 rcu_read_lock(); 1102 ctx = rcu_dereference(link_conf->chanctx_conf); 1103 channel = ieee80211_frequency_to_channel(ctx->def.chan->center_freq); 1104 WARN_ON(channel == 0); 1105 if (cfg80211_channel_is_psc(ctx->def.chan) && 1106 !IWL_MVM_DISABLE_AP_FILS) { 1107 flags |= iwl_fw_lookup_cmd_ver(mvm->fw, BEACON_TEMPLATE_CMD, 1108 0) > 10 ? 1109 IWL_MAC_BEACON_FILS : 1110 IWL_MAC_BEACON_FILS_V1; 1111 beacon_cmd.short_ssid = 1112 cpu_to_le32(~crc32_le(~0, vif->cfg.ssid, 1113 vif->cfg.ssid_len)); 1114 } 1115 rcu_read_unlock(); 1116 1117 beacon_cmd.flags = cpu_to_le16(flags); 1118 beacon_cmd.byte_cnt = cpu_to_le16((u16)beacon->len); 1119 1120 if (WARN_ON(!mvmvif->link[link_conf->link_id])) 1121 return -EINVAL; 1122 1123 if (iwl_fw_lookup_cmd_ver(mvm->fw, BEACON_TEMPLATE_CMD, 0) > 12) 1124 beacon_cmd.link_id = 1125 cpu_to_le32(mvmvif->link[link_conf->link_id]->fw_link_id); 1126 else 1127 beacon_cmd.link_id = cpu_to_le32((u32)mvmvif->id); 1128 1129 if (vif->type == NL80211_IFTYPE_AP) 1130 iwl_mvm_mac_ctxt_set_tim(mvm, &beacon_cmd.tim_idx, 1131 &beacon_cmd.tim_size, 1132 beacon->data, beacon->len); 1133 1134 beacon_cmd.csa_offset = 1135 cpu_to_le32(iwl_mvm_find_ie_offset(beacon->data, 1136 WLAN_EID_CHANNEL_SWITCH, 1137 beacon->len)); 1138 beacon_cmd.ecsa_offset = 1139 cpu_to_le32(iwl_mvm_find_ie_offset(beacon->data, 1140 WLAN_EID_EXT_CHANSWITCH_ANN, 1141 beacon->len)); 1142 1143 return iwl_mvm_mac_ctxt_send_beacon_cmd(mvm, beacon, &beacon_cmd, 1144 sizeof(beacon_cmd)); 1145} 1146 1147static int iwl_mvm_mac_ctxt_send_beacon(struct iwl_mvm *mvm, 1148 struct ieee80211_vif *vif, 1149 struct sk_buff *beacon, 1150 struct ieee80211_bss_conf *link_conf) 1151{ 1152 if (WARN_ON(!beacon)) 1153 return -EINVAL; 1154 1155 if (IWL_MVM_NON_TRANSMITTING_AP) 1156 return 0; 1157 1158 if (!fw_has_capa(&mvm->fw->ucode_capa, 1159 IWL_UCODE_TLV_CAPA_CSA_AND_TBTT_OFFLOAD)) 1160 return iwl_mvm_mac_ctxt_send_beacon_v6(mvm, vif, beacon); 1161 1162 if (fw_has_api(&mvm->fw->ucode_capa, 1163 IWL_UCODE_TLV_API_NEW_BEACON_TEMPLATE)) 1164 return iwl_mvm_mac_ctxt_send_beacon_v9(mvm, vif, beacon, 1165 link_conf); 1166 1167 return iwl_mvm_mac_ctxt_send_beacon_v7(mvm, vif, beacon); 1168} 1169 1170/* The beacon template for the AP/GO/IBSS has changed and needs update */ 1171int iwl_mvm_mac_ctxt_beacon_changed(struct iwl_mvm *mvm, 1172 struct ieee80211_vif *vif, 1173 struct ieee80211_bss_conf *link_conf) 1174{ 1175 struct sk_buff *beacon; 1176 int ret; 1177 1178 WARN_ON(vif->type != NL80211_IFTYPE_AP && 1179 vif->type != NL80211_IFTYPE_ADHOC); 1180 1181 beacon = ieee80211_beacon_get_template(mvm->hw, vif, NULL, 1182 link_conf->link_id); 1183 if (!beacon) 1184 return -ENOMEM; 1185 1186#ifdef CONFIG_IWLWIFI_DEBUGFS 1187 if (mvm->beacon_inject_active) { 1188 dev_kfree_skb(beacon); 1189 return -EBUSY; 1190 } 1191#endif 1192 1193 ret = iwl_mvm_mac_ctxt_send_beacon(mvm, vif, beacon, link_conf); 1194 dev_kfree_skb(beacon); 1195 return ret; 1196} 1197 1198struct iwl_mvm_mac_ap_iterator_data { 1199 struct iwl_mvm *mvm; 1200 struct ieee80211_vif *vif; 1201 u32 beacon_device_ts; 1202 u16 beacon_int; 1203}; 1204 1205/* Find the beacon_device_ts and beacon_int for a managed interface */ 1206static void iwl_mvm_mac_ap_iterator(void *_data, u8 *mac, 1207 struct ieee80211_vif *vif) 1208{ 1209 struct iwl_mvm_mac_ap_iterator_data *data = _data; 1210 1211 if (vif->type != NL80211_IFTYPE_STATION || !vif->cfg.assoc) 1212 return; 1213 1214 /* Station client has higher priority over P2P client*/ 1215 if (vif->p2p && data->beacon_device_ts) 1216 return; 1217 1218 data->beacon_device_ts = vif->bss_conf.sync_device_ts; 1219 data->beacon_int = vif->bss_conf.beacon_int; 1220} 1221 1222/* 1223 * Fill the filter flags for mac context of type AP or P2P GO. 1224 */ 1225void iwl_mvm_mac_ctxt_cmd_ap_set_filter_flags(struct iwl_mvm *mvm, 1226 struct iwl_mvm_vif *mvmvif, 1227 __le32 *filter_flags, 1228 int accept_probe_req_flag, 1229 int accept_beacon_flag) 1230{ 1231 /* 1232 * in AP mode, pass probe requests and beacons from other APs 1233 * (needed for ht protection); when there're no any associated 1234 * station don't ask FW to pass beacons to prevent unnecessary 1235 * wake-ups. 1236 */ 1237 *filter_flags |= cpu_to_le32(accept_probe_req_flag); 1238 if (mvmvif->ap_assoc_sta_count || !mvm->drop_bcn_ap_mode) { 1239 *filter_flags |= cpu_to_le32(accept_beacon_flag); 1240 IWL_DEBUG_HC(mvm, "Asking FW to pass beacons\n"); 1241 } else { 1242 IWL_DEBUG_HC(mvm, "No need to receive beacons\n"); 1243 } 1244} 1245 1246/* 1247 * Fill the specific data for mac context of type AP of P2P GO 1248 */ 1249static void iwl_mvm_mac_ctxt_cmd_fill_ap(struct iwl_mvm *mvm, 1250 struct ieee80211_vif *vif, 1251 struct iwl_mac_ctx_cmd *cmd, 1252 struct iwl_mac_data_ap *ctxt_ap, 1253 bool add) 1254{ 1255 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 1256 struct iwl_mvm_mac_ap_iterator_data data = { 1257 .mvm = mvm, 1258 .vif = vif, 1259 .beacon_device_ts = 0 1260 }; 1261 1262 /* in AP mode, the MCAST FIFO takes the EDCA params from VO */ 1263 cmd->ac[IWL_MVM_TX_FIFO_VO].fifos_mask |= BIT(IWL_MVM_TX_FIFO_MCAST); 1264 1265 iwl_mvm_mac_ctxt_cmd_ap_set_filter_flags(mvm, mvmvif, 1266 &cmd->filter_flags, 1267 MAC_FILTER_IN_PROBE_REQUEST, 1268 MAC_FILTER_IN_BEACON); 1269 1270 ctxt_ap->bi = cpu_to_le32(vif->bss_conf.beacon_int); 1271 ctxt_ap->dtim_interval = cpu_to_le32(vif->bss_conf.beacon_int * 1272 vif->bss_conf.dtim_period); 1273 1274 if (!fw_has_api(&mvm->fw->ucode_capa, 1275 IWL_UCODE_TLV_API_STA_TYPE)) 1276 ctxt_ap->mcast_qid = cpu_to_le32(mvmvif->deflink.cab_queue); 1277 1278 /* 1279 * Only set the beacon time when the MAC is being added, when we 1280 * just modify the MAC then we should keep the time -- the firmware 1281 * can otherwise have a "jumping" TBTT. 1282 */ 1283 if (add) { 1284 /* 1285 * If there is a station/P2P client interface which is 1286 * associated, set the AP's TBTT far enough from the station's 1287 * TBTT. Otherwise, set it to the current system time 1288 */ 1289 ieee80211_iterate_active_interfaces_atomic( 1290 mvm->hw, IEEE80211_IFACE_ITER_RESUME_ALL, 1291 iwl_mvm_mac_ap_iterator, &data); 1292 1293 if (data.beacon_device_ts) { 1294 u32 rand = get_random_u32_inclusive(36, 63); 1295 mvmvif->ap_beacon_time = data.beacon_device_ts + 1296 ieee80211_tu_to_usec(data.beacon_int * rand / 1297 100); 1298 } else { 1299 mvmvif->ap_beacon_time = iwl_mvm_get_systime(mvm); 1300 } 1301 } 1302 1303 ctxt_ap->beacon_time = cpu_to_le32(mvmvif->ap_beacon_time); 1304 ctxt_ap->beacon_tsf = 0; /* unused */ 1305 1306 /* TODO: Assume that the beacon id == mac context id */ 1307 ctxt_ap->beacon_template = cpu_to_le32(mvmvif->id); 1308} 1309 1310static int iwl_mvm_mac_ctxt_cmd_ap(struct iwl_mvm *mvm, 1311 struct ieee80211_vif *vif, 1312 u32 action) 1313{ 1314 struct iwl_mac_ctx_cmd cmd = {}; 1315 1316 WARN_ON(vif->type != NL80211_IFTYPE_AP || vif->p2p); 1317 1318 /* Fill the common data for all mac context types */ 1319 iwl_mvm_mac_ctxt_cmd_common(mvm, vif, &cmd, NULL, action); 1320 1321 /* Fill the data specific for ap mode */ 1322 iwl_mvm_mac_ctxt_cmd_fill_ap(mvm, vif, &cmd, &cmd.ap, 1323 action == FW_CTXT_ACTION_ADD); 1324 1325 return iwl_mvm_mac_ctxt_send_cmd(mvm, &cmd); 1326} 1327 1328static int iwl_mvm_mac_ctxt_cmd_go(struct iwl_mvm *mvm, 1329 struct ieee80211_vif *vif, 1330 u32 action) 1331{ 1332 struct iwl_mac_ctx_cmd cmd = {}; 1333 struct ieee80211_p2p_noa_attr *noa = &vif->bss_conf.p2p_noa_attr; 1334 1335 WARN_ON(vif->type != NL80211_IFTYPE_AP || !vif->p2p); 1336 1337 /* Fill the common data for all mac context types */ 1338 iwl_mvm_mac_ctxt_cmd_common(mvm, vif, &cmd, NULL, action); 1339 1340 /* Fill the data specific for GO mode */ 1341 iwl_mvm_mac_ctxt_cmd_fill_ap(mvm, vif, &cmd, &cmd.go.ap, 1342 action == FW_CTXT_ACTION_ADD); 1343 1344 cmd.go.ctwin = cpu_to_le32(noa->oppps_ctwindow & 1345 IEEE80211_P2P_OPPPS_CTWINDOW_MASK); 1346 cmd.go.opp_ps_enabled = 1347 cpu_to_le32(!!(noa->oppps_ctwindow & 1348 IEEE80211_P2P_OPPPS_ENABLE_BIT)); 1349 1350 return iwl_mvm_mac_ctxt_send_cmd(mvm, &cmd); 1351} 1352 1353static int iwl_mvm_mac_ctx_send(struct iwl_mvm *mvm, struct ieee80211_vif *vif, 1354 u32 action, bool force_assoc_off, 1355 const u8 *bssid_override) 1356{ 1357 switch (vif->type) { 1358 case NL80211_IFTYPE_STATION: 1359 return iwl_mvm_mac_ctxt_cmd_sta(mvm, vif, action, 1360 force_assoc_off, 1361 bssid_override); 1362 case NL80211_IFTYPE_AP: 1363 if (!vif->p2p) 1364 return iwl_mvm_mac_ctxt_cmd_ap(mvm, vif, action); 1365 else 1366 return iwl_mvm_mac_ctxt_cmd_go(mvm, vif, action); 1367 case NL80211_IFTYPE_MONITOR: 1368 return iwl_mvm_mac_ctxt_cmd_listener(mvm, vif, action); 1369 case NL80211_IFTYPE_P2P_DEVICE: 1370 return iwl_mvm_mac_ctxt_cmd_p2p_device(mvm, vif, action); 1371 case NL80211_IFTYPE_ADHOC: 1372 return iwl_mvm_mac_ctxt_cmd_ibss(mvm, vif, action); 1373 default: 1374 break; 1375 } 1376 1377 return -EOPNOTSUPP; 1378} 1379 1380int iwl_mvm_mac_ctxt_add(struct iwl_mvm *mvm, struct ieee80211_vif *vif) 1381{ 1382 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 1383 int ret; 1384 1385 if (WARN_ONCE(mvmvif->uploaded, "Adding active MAC %pM/%d\n", 1386 vif->addr, ieee80211_vif_type_p2p(vif))) 1387 return -EIO; 1388 1389 ret = iwl_mvm_mac_ctx_send(mvm, vif, FW_CTXT_ACTION_ADD, 1390 true, NULL); 1391 if (ret) 1392 return ret; 1393 1394 /* will only do anything at resume from D3 time */ 1395 iwl_mvm_set_last_nonqos_seq(mvm, vif); 1396 1397 mvmvif->uploaded = true; 1398 return 0; 1399} 1400 1401int iwl_mvm_mac_ctxt_changed(struct iwl_mvm *mvm, struct ieee80211_vif *vif, 1402 bool force_assoc_off, const u8 *bssid_override) 1403{ 1404 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 1405 1406 if (WARN_ONCE(!mvmvif->uploaded, "Changing inactive MAC %pM/%d\n", 1407 vif->addr, ieee80211_vif_type_p2p(vif))) 1408 return -EIO; 1409 1410 return iwl_mvm_mac_ctx_send(mvm, vif, FW_CTXT_ACTION_MODIFY, 1411 force_assoc_off, bssid_override); 1412} 1413 1414int iwl_mvm_mac_ctxt_remove(struct iwl_mvm *mvm, struct ieee80211_vif *vif) 1415{ 1416 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 1417 struct iwl_mac_ctx_cmd cmd; 1418 int ret; 1419 1420 if (WARN_ONCE(!mvmvif->uploaded, "Removing inactive MAC %pM/%d\n", 1421 vif->addr, ieee80211_vif_type_p2p(vif))) 1422 return -EIO; 1423 1424 memset(&cmd, 0, sizeof(cmd)); 1425 1426 cmd.id_and_color = cpu_to_le32(FW_CMD_ID_AND_COLOR(mvmvif->id, 1427 mvmvif->color)); 1428 cmd.action = cpu_to_le32(FW_CTXT_ACTION_REMOVE); 1429 1430 ret = iwl_mvm_mac_ctxt_send_cmd(mvm, &cmd); 1431 if (ret) 1432 return ret; 1433 1434 mvmvif->uploaded = false; 1435 1436 if (vif->type == NL80211_IFTYPE_MONITOR) { 1437 __clear_bit(IEEE80211_HW_RX_INCLUDES_FCS, mvm->hw->flags); 1438 iwl_mvm_dealloc_snif_sta(mvm); 1439 } 1440 1441 return 0; 1442} 1443 1444static void iwl_mvm_csa_count_down(struct iwl_mvm *mvm, 1445 struct ieee80211_vif *csa_vif, u32 gp2, 1446 bool tx_success) 1447{ 1448 struct iwl_mvm_vif *mvmvif = 1449 iwl_mvm_vif_from_mac80211(csa_vif); 1450 1451 /* Don't start to countdown from a failed beacon */ 1452 if (!tx_success && !mvmvif->csa_countdown) 1453 return; 1454 1455 mvmvif->csa_countdown = true; 1456 1457 if (!ieee80211_beacon_cntdwn_is_complete(csa_vif)) { 1458 int c = ieee80211_beacon_update_cntdwn(csa_vif); 1459 1460 iwl_mvm_mac_ctxt_beacon_changed(mvm, csa_vif, 1461 &csa_vif->bss_conf); 1462 if (csa_vif->p2p && 1463 !iwl_mvm_te_scheduled(&mvmvif->time_event_data) && gp2 && 1464 tx_success) { 1465 u32 rel_time = (c + 1) * 1466 csa_vif->bss_conf.beacon_int - 1467 IWL_MVM_CHANNEL_SWITCH_TIME_GO; 1468 u32 apply_time = gp2 + rel_time * 1024; 1469 1470 iwl_mvm_schedule_csa_period(mvm, csa_vif, 1471 IWL_MVM_CHANNEL_SWITCH_TIME_GO - 1472 IWL_MVM_CHANNEL_SWITCH_MARGIN, 1473 apply_time); 1474 } 1475 } else if (!iwl_mvm_te_scheduled(&mvmvif->time_event_data)) { 1476 /* we don't have CSA NoA scheduled yet, switch now */ 1477 ieee80211_csa_finish(csa_vif); 1478 RCU_INIT_POINTER(mvm->csa_vif, NULL); 1479 } 1480} 1481 1482void iwl_mvm_rx_beacon_notif(struct iwl_mvm *mvm, 1483 struct iwl_rx_cmd_buffer *rxb) 1484{ 1485 struct iwl_rx_packet *pkt = rxb_addr(rxb); 1486 unsigned int pkt_len = iwl_rx_packet_payload_len(pkt); 1487 struct iwl_extended_beacon_notif *beacon = (void *)pkt->data; 1488 struct iwl_extended_beacon_notif_v5 *beacon_v5 = (void *)pkt->data; 1489 struct ieee80211_vif *csa_vif; 1490 struct ieee80211_vif *tx_blocked_vif; 1491 struct agg_tx_status *agg_status; 1492 u16 status; 1493 1494 lockdep_assert_held(&mvm->mutex); 1495 1496 mvm->ap_last_beacon_gp2 = le32_to_cpu(beacon->gp2); 1497 1498 if (!iwl_mvm_is_short_beacon_notif_supported(mvm)) { 1499 struct iwl_mvm_tx_resp *beacon_notify_hdr = 1500 &beacon_v5->beacon_notify_hdr; 1501 1502 if (unlikely(pkt_len < sizeof(*beacon_v5))) 1503 return; 1504 1505 mvm->ibss_manager = beacon_v5->ibss_mgr_status != 0; 1506 agg_status = iwl_mvm_get_agg_status(mvm, beacon_notify_hdr); 1507 status = le16_to_cpu(agg_status->status) & TX_STATUS_MSK; 1508 IWL_DEBUG_RX(mvm, 1509 "beacon status %#x retries:%d tsf:0x%016llX gp2:0x%X rate:%d\n", 1510 status, beacon_notify_hdr->failure_frame, 1511 le64_to_cpu(beacon->tsf), 1512 mvm->ap_last_beacon_gp2, 1513 le32_to_cpu(beacon_notify_hdr->initial_rate)); 1514 } else { 1515 if (unlikely(pkt_len < sizeof(*beacon))) 1516 return; 1517 1518 mvm->ibss_manager = beacon->ibss_mgr_status != 0; 1519 status = le32_to_cpu(beacon->status) & TX_STATUS_MSK; 1520 IWL_DEBUG_RX(mvm, 1521 "beacon status %#x tsf:0x%016llX gp2:0x%X\n", 1522 status, le64_to_cpu(beacon->tsf), 1523 mvm->ap_last_beacon_gp2); 1524 } 1525 1526 csa_vif = rcu_dereference_protected(mvm->csa_vif, 1527 lockdep_is_held(&mvm->mutex)); 1528 if (unlikely(csa_vif && csa_vif->bss_conf.csa_active)) 1529 iwl_mvm_csa_count_down(mvm, csa_vif, mvm->ap_last_beacon_gp2, 1530 (status == TX_STATUS_SUCCESS)); 1531 1532 tx_blocked_vif = rcu_dereference_protected(mvm->csa_tx_blocked_vif, 1533 lockdep_is_held(&mvm->mutex)); 1534 if (unlikely(tx_blocked_vif)) { 1535 struct iwl_mvm_vif *mvmvif = 1536 iwl_mvm_vif_from_mac80211(tx_blocked_vif); 1537 1538 /* 1539 * The channel switch is started and we have blocked the 1540 * stations. If this is the first beacon (the timeout wasn't 1541 * set), set the unblock timeout, otherwise countdown 1542 */ 1543 if (!mvm->csa_tx_block_bcn_timeout) 1544 mvm->csa_tx_block_bcn_timeout = 1545 IWL_MVM_CS_UNBLOCK_TX_TIMEOUT; 1546 else 1547 mvm->csa_tx_block_bcn_timeout--; 1548 1549 /* Check if the timeout is expired, and unblock tx */ 1550 if (mvm->csa_tx_block_bcn_timeout == 0) { 1551 iwl_mvm_modify_all_sta_disable_tx(mvm, mvmvif, false); 1552 RCU_INIT_POINTER(mvm->csa_tx_blocked_vif, NULL); 1553 } 1554 } 1555} 1556 1557void iwl_mvm_rx_missed_beacons_notif(struct iwl_mvm *mvm, 1558 struct iwl_rx_cmd_buffer *rxb) 1559{ 1560 struct iwl_rx_packet *pkt = rxb_addr(rxb); 1561 struct iwl_missed_beacons_notif *mb = (void *)pkt->data; 1562 struct iwl_fw_dbg_trigger_missed_bcon *bcon_trig; 1563 struct iwl_fw_dbg_trigger_tlv *trigger; 1564 u32 stop_trig_missed_bcon, stop_trig_missed_bcon_since_rx; 1565 u32 rx_missed_bcon, rx_missed_bcon_since_rx; 1566 struct ieee80211_vif *vif; 1567 /* Id can be mac/link id depending on the notification version */ 1568 u32 id = le32_to_cpu(mb->link_id); 1569 union iwl_dbg_tlv_tp_data tp_data = { .fw_pkt = pkt }; 1570 u32 mac_type; 1571 u8 notif_ver = iwl_fw_lookup_notif_ver(mvm->fw, LEGACY_GROUP, 1572 MISSED_BEACONS_NOTIFICATION, 1573 0); 1574 1575 rcu_read_lock(); 1576 1577 /* before version four the ID in the notification refers to mac ID */ 1578 if (notif_ver < 4) { 1579 vif = iwl_mvm_rcu_dereference_vif_id(mvm, id, true); 1580 } else { 1581 struct ieee80211_bss_conf *bss_conf = 1582 iwl_mvm_rcu_fw_link_id_to_link_conf(mvm, id, true); 1583 1584 if (!bss_conf) 1585 goto out; 1586 1587 vif = bss_conf->vif; 1588 } 1589 1590 IWL_DEBUG_INFO(mvm, 1591 "missed bcn %s_id=%u, consecutive=%u (%u, %u, %u)\n", 1592 notif_ver < 4 ? "mac" : "link", 1593 id, 1594 le32_to_cpu(mb->consec_missed_beacons), 1595 le32_to_cpu(mb->consec_missed_beacons_since_last_rx), 1596 le32_to_cpu(mb->num_recvd_beacons), 1597 le32_to_cpu(mb->num_expected_beacons)); 1598 1599 if (!vif) 1600 goto out; 1601 1602 mac_type = iwl_mvm_get_mac_type(vif); 1603 1604 IWL_DEBUG_INFO(mvm, "missed beacon mac_type=%u,\n", mac_type); 1605 1606 mvm->trans->dbg.dump_file_name_ext_valid = true; 1607 snprintf(mvm->trans->dbg.dump_file_name_ext, IWL_FW_INI_MAX_NAME, 1608 "MacId_%d_MacType_%d", id, mac_type); 1609 1610 rx_missed_bcon = le32_to_cpu(mb->consec_missed_beacons); 1611 rx_missed_bcon_since_rx = 1612 le32_to_cpu(mb->consec_missed_beacons_since_last_rx); 1613 /* 1614 * TODO: the threshold should be adjusted based on latency conditions, 1615 * and/or in case of a CS flow on one of the other AP vifs. 1616 */ 1617 if (rx_missed_bcon > IWL_MVM_MISSED_BEACONS_THRESHOLD_LONG) 1618 iwl_mvm_connection_loss(mvm, vif, "missed beacons"); 1619 else if (rx_missed_bcon_since_rx > IWL_MVM_MISSED_BEACONS_THRESHOLD) 1620 ieee80211_beacon_loss(vif); 1621 1622 iwl_dbg_tlv_time_point(&mvm->fwrt, 1623 IWL_FW_INI_TIME_POINT_MISSED_BEACONS, &tp_data); 1624 1625 trigger = iwl_fw_dbg_trigger_on(&mvm->fwrt, ieee80211_vif_to_wdev(vif), 1626 FW_DBG_TRIGGER_MISSED_BEACONS); 1627 if (!trigger) 1628 goto out; 1629 1630 bcon_trig = (void *)trigger->data; 1631 stop_trig_missed_bcon = le32_to_cpu(bcon_trig->stop_consec_missed_bcon); 1632 stop_trig_missed_bcon_since_rx = 1633 le32_to_cpu(bcon_trig->stop_consec_missed_bcon_since_rx); 1634 1635 /* TODO: implement start trigger */ 1636 1637 if (rx_missed_bcon_since_rx >= stop_trig_missed_bcon_since_rx || 1638 rx_missed_bcon >= stop_trig_missed_bcon) 1639#if defined(__linux__) 1640 iwl_fw_dbg_collect_trig(&mvm->fwrt, trigger, NULL); 1641#elif defined(__FreeBSD__) 1642 iwl_fw_dbg_collect_trig(&mvm->fwrt, trigger, ""); 1643#endif 1644 1645out: 1646 rcu_read_unlock(); 1647} 1648 1649void iwl_mvm_rx_stored_beacon_notif(struct iwl_mvm *mvm, 1650 struct iwl_rx_cmd_buffer *rxb) 1651{ 1652 struct iwl_rx_packet *pkt = rxb_addr(rxb); 1653 unsigned int pkt_len = iwl_rx_packet_payload_len(pkt); 1654 struct iwl_stored_beacon_notif_common *sb = (void *)pkt->data; 1655 struct ieee80211_rx_status rx_status; 1656 struct sk_buff *skb; 1657 u8 *data; 1658 u32 size = le32_to_cpu(sb->byte_count); 1659 int ver = iwl_fw_lookup_cmd_ver(mvm->fw, 1660 WIDE_ID(PROT_OFFLOAD_GROUP, STORED_BEACON_NTF), 1661 0); 1662 1663 if (size == 0) 1664 return; 1665 1666 /* handle per-version differences */ 1667 if (ver <= 2) { 1668 struct iwl_stored_beacon_notif_v2 *sb_v2 = (void *)pkt->data; 1669 1670 if (pkt_len < struct_size(sb_v2, data, size)) 1671 return; 1672 1673 data = sb_v2->data; 1674 } else { 1675 struct iwl_stored_beacon_notif_v3 *sb_v3 = (void *)pkt->data; 1676 1677 if (pkt_len < struct_size(sb_v3, data, size)) 1678 return; 1679 1680 data = sb_v3->data; 1681 } 1682 1683 skb = alloc_skb(size, GFP_ATOMIC); 1684 if (!skb) { 1685 IWL_ERR(mvm, "alloc_skb failed\n"); 1686 return; 1687 } 1688 1689 /* update rx_status according to the notification's metadata */ 1690 memset(&rx_status, 0, sizeof(rx_status)); 1691 rx_status.mactime = le64_to_cpu(sb->tsf); 1692 /* TSF as indicated by the firmware is at INA time */ 1693 rx_status.flag |= RX_FLAG_MACTIME_PLCP_START; 1694 rx_status.device_timestamp = le32_to_cpu(sb->system_time); 1695 rx_status.band = 1696 (sb->band & cpu_to_le16(RX_RES_PHY_FLAGS_BAND_24)) ? 1697 NL80211_BAND_2GHZ : NL80211_BAND_5GHZ; 1698 rx_status.freq = 1699 ieee80211_channel_to_frequency(le16_to_cpu(sb->channel), 1700 rx_status.band); 1701 1702 /* copy the data */ 1703 skb_put_data(skb, data, size); 1704 memcpy(IEEE80211_SKB_RXCB(skb), &rx_status, sizeof(rx_status)); 1705 1706 /* pass it as regular rx to mac80211 */ 1707 ieee80211_rx_napi(mvm->hw, NULL, skb, NULL); 1708} 1709 1710void iwl_mvm_probe_resp_data_notif(struct iwl_mvm *mvm, 1711 struct iwl_rx_cmd_buffer *rxb) 1712{ 1713 struct iwl_rx_packet *pkt = rxb_addr(rxb); 1714 struct iwl_probe_resp_data_notif *notif = (void *)pkt->data; 1715 struct iwl_probe_resp_data *old_data, *new_data; 1716 u32 id = le32_to_cpu(notif->mac_id); 1717 struct ieee80211_vif *vif; 1718 struct iwl_mvm_vif *mvmvif; 1719 1720 IWL_DEBUG_INFO(mvm, "Probe response data notif: noa %d, csa %d\n", 1721 notif->noa_active, notif->csa_counter); 1722 1723 vif = iwl_mvm_rcu_dereference_vif_id(mvm, id, false); 1724 if (!vif) 1725 return; 1726 1727 mvmvif = iwl_mvm_vif_from_mac80211(vif); 1728 1729 new_data = kzalloc(sizeof(*new_data), GFP_KERNEL); 1730 if (!new_data) 1731 return; 1732 1733 memcpy(&new_data->notif, notif, sizeof(new_data->notif)); 1734 1735 /* noa_attr contains 1 reserved byte, need to substruct it */ 1736 new_data->noa_len = sizeof(struct ieee80211_vendor_ie) + 1737 sizeof(new_data->notif.noa_attr) - 1; 1738 1739 /* 1740 * If it's a one time NoA, only one descriptor is needed, 1741 * adjust the length according to len_low. 1742 */ 1743 if (new_data->notif.noa_attr.len_low == 1744 sizeof(struct ieee80211_p2p_noa_desc) + 2) 1745 new_data->noa_len -= sizeof(struct ieee80211_p2p_noa_desc); 1746 1747 old_data = rcu_dereference_protected(mvmvif->deflink.probe_resp_data, 1748 lockdep_is_held(&mvmvif->mvm->mutex)); 1749 rcu_assign_pointer(mvmvif->deflink.probe_resp_data, new_data); 1750 1751 if (old_data) 1752 kfree_rcu(old_data, rcu_head); 1753 1754 if (notif->csa_counter != IWL_PROBE_RESP_DATA_NO_CSA && 1755 notif->csa_counter >= 1) 1756 ieee80211_beacon_set_cntdwn(vif, notif->csa_counter); 1757} 1758 1759void iwl_mvm_channel_switch_start_notif(struct iwl_mvm *mvm, 1760 struct iwl_rx_cmd_buffer *rxb) 1761{ 1762 struct iwl_rx_packet *pkt = rxb_addr(rxb); 1763 struct ieee80211_vif *csa_vif, *vif; 1764 struct iwl_mvm_vif *mvmvif, *csa_mvmvif; 1765 u32 id_n_color, csa_id; 1766 /* save mac_id or link_id to use later to cancel csa if needed */ 1767 u32 id; 1768 u8 notif_ver = iwl_fw_lookup_notif_ver(mvm->fw, MAC_CONF_GROUP, 1769 CHANNEL_SWITCH_START_NOTIF, 0); 1770 bool csa_active; 1771 1772 rcu_read_lock(); 1773 1774 if (notif_ver < 3) { 1775 struct iwl_channel_switch_start_notif_v1 *notif = (void *)pkt->data; 1776 u32 mac_id; 1777 1778 id_n_color = le32_to_cpu(notif->id_and_color); 1779 mac_id = id_n_color & FW_CTXT_ID_MSK; 1780 1781 vif = iwl_mvm_rcu_dereference_vif_id(mvm, mac_id, true); 1782 if (!vif) 1783 goto out_unlock; 1784 1785 id = mac_id; 1786 csa_active = vif->bss_conf.csa_active; 1787 } else { 1788 struct iwl_channel_switch_start_notif *notif = (void *)pkt->data; 1789 u32 link_id = le32_to_cpu(notif->link_id); 1790 struct ieee80211_bss_conf *bss_conf = 1791 iwl_mvm_rcu_fw_link_id_to_link_conf(mvm, link_id, true); 1792 1793 if (!bss_conf) 1794 goto out_unlock; 1795 1796 id = link_id; 1797 vif = bss_conf->vif; 1798 csa_active = bss_conf->csa_active; 1799 } 1800 1801 mvmvif = iwl_mvm_vif_from_mac80211(vif); 1802 if (notif_ver >= 3) 1803 id_n_color = FW_CMD_ID_AND_COLOR(mvmvif->id, mvmvif->color); 1804 1805 switch (vif->type) { 1806 case NL80211_IFTYPE_AP: 1807 csa_vif = rcu_dereference(mvm->csa_vif); 1808 if (WARN_ON(!csa_vif || !csa_vif->bss_conf.csa_active || 1809 csa_vif != vif)) 1810 goto out_unlock; 1811 1812 csa_mvmvif = iwl_mvm_vif_from_mac80211(csa_vif); 1813 csa_id = FW_CMD_ID_AND_COLOR(csa_mvmvif->id, csa_mvmvif->color); 1814 if (WARN(csa_id != id_n_color, 1815 "channel switch noa notification on unexpected vif (csa_vif=%d, notif=%d)", 1816 csa_id, id_n_color)) 1817 goto out_unlock; 1818 1819 IWL_DEBUG_INFO(mvm, "Channel Switch Started Notification\n"); 1820 1821 schedule_delayed_work(&mvm->cs_tx_unblock_dwork, 1822 msecs_to_jiffies(IWL_MVM_CS_UNBLOCK_TX_TIMEOUT * 1823 csa_vif->bss_conf.beacon_int)); 1824 1825 ieee80211_csa_finish(csa_vif); 1826 1827 rcu_read_unlock(); 1828 1829 RCU_INIT_POINTER(mvm->csa_vif, NULL); 1830 return; 1831 case NL80211_IFTYPE_STATION: 1832 /* 1833 * if we don't know about an ongoing channel switch, 1834 * make sure FW cancels it 1835 */ 1836 if (iwl_fw_lookup_notif_ver(mvm->fw, MAC_CONF_GROUP, 1837 CHANNEL_SWITCH_ERROR_NOTIF, 1838 0) && !csa_active) { 1839 IWL_DEBUG_INFO(mvm, "Channel Switch was canceled\n"); 1840 iwl_mvm_cancel_channel_switch(mvm, vif, id); 1841 break; 1842 } 1843 1844 iwl_mvm_csa_client_absent(mvm, vif); 1845 cancel_delayed_work(&mvmvif->csa_work); 1846 ieee80211_chswitch_done(vif, true); 1847 break; 1848 default: 1849 /* should never happen */ 1850 WARN_ON_ONCE(1); 1851 break; 1852 } 1853out_unlock: 1854 rcu_read_unlock(); 1855} 1856 1857void iwl_mvm_channel_switch_error_notif(struct iwl_mvm *mvm, 1858 struct iwl_rx_cmd_buffer *rxb) 1859{ 1860 struct iwl_rx_packet *pkt = rxb_addr(rxb); 1861 struct iwl_channel_switch_error_notif *notif = (void *)pkt->data; 1862 struct ieee80211_vif *vif; 1863 u32 id = le32_to_cpu(notif->link_id); 1864 u32 csa_err_mask = le32_to_cpu(notif->csa_err_mask); 1865 1866 rcu_read_lock(); 1867 vif = iwl_mvm_rcu_dereference_vif_id(mvm, id, true); 1868 if (!vif) { 1869 rcu_read_unlock(); 1870 return; 1871 } 1872 1873 IWL_DEBUG_INFO(mvm, "FW reports CSA error: id=%u, csa_err_mask=%u\n", 1874 id, csa_err_mask); 1875 if (csa_err_mask & (CS_ERR_COUNT_ERROR | 1876 CS_ERR_LONG_DELAY_AFTER_CS | 1877 CS_ERR_TX_BLOCK_TIMER_EXPIRED)) 1878 ieee80211_channel_switch_disconnect(vif, true); 1879 rcu_read_unlock(); 1880} 1881 1882void iwl_mvm_rx_missed_vap_notif(struct iwl_mvm *mvm, 1883 struct iwl_rx_cmd_buffer *rxb) 1884{ 1885 struct iwl_rx_packet *pkt = rxb_addr(rxb); 1886 struct iwl_missed_vap_notif *mb = (void *)pkt->data; 1887 struct ieee80211_vif *vif; 1888 u32 id = le32_to_cpu(mb->mac_id); 1889 1890 IWL_DEBUG_INFO(mvm, 1891 "missed_vap notify mac_id=%u, num_beacon_intervals_elapsed=%u, profile_periodicity=%u\n", 1892 le32_to_cpu(mb->mac_id), 1893 mb->num_beacon_intervals_elapsed, 1894 mb->profile_periodicity); 1895 1896 rcu_read_lock(); 1897 1898 vif = iwl_mvm_rcu_dereference_vif_id(mvm, id, true); 1899 if (vif) 1900 iwl_mvm_connection_loss(mvm, vif, "missed vap beacon"); 1901 1902 rcu_read_unlock(); 1903} 1904