1 // SPDX-License-Identifier: GPL-2.0 OR BSD-3-Clause 2 /* 3 * Copyright (C) 2012-2014, 2018-2024 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 #include "iwl-utils.h" 16 17 const u8 iwl_mvm_ac_to_tx_fifo[] = { 18 IWL_MVM_TX_FIFO_VO, 19 IWL_MVM_TX_FIFO_VI, 20 IWL_MVM_TX_FIFO_BE, 21 IWL_MVM_TX_FIFO_BK, 22 }; 23 24 const u8 iwl_mvm_ac_to_gen2_tx_fifo[] = { 25 IWL_GEN2_EDCA_TX_FIFO_VO, 26 IWL_GEN2_EDCA_TX_FIFO_VI, 27 IWL_GEN2_EDCA_TX_FIFO_BE, 28 IWL_GEN2_EDCA_TX_FIFO_BK, 29 IWL_GEN2_TRIG_TX_FIFO_VO, 30 IWL_GEN2_TRIG_TX_FIFO_VI, 31 IWL_GEN2_TRIG_TX_FIFO_BE, 32 IWL_GEN2_TRIG_TX_FIFO_BK, 33 }; 34 35 const u8 iwl_mvm_ac_to_bz_tx_fifo[] = { 36 IWL_BZ_EDCA_TX_FIFO_VO, 37 IWL_BZ_EDCA_TX_FIFO_VI, 38 IWL_BZ_EDCA_TX_FIFO_BE, 39 IWL_BZ_EDCA_TX_FIFO_BK, 40 IWL_BZ_TRIG_TX_FIFO_VO, 41 IWL_BZ_TRIG_TX_FIFO_VI, 42 IWL_BZ_TRIG_TX_FIFO_BE, 43 IWL_BZ_TRIG_TX_FIFO_BK, 44 }; 45 46 struct iwl_mvm_mac_iface_iterator_data { 47 struct iwl_mvm *mvm; 48 struct ieee80211_vif *vif; 49 unsigned long available_mac_ids[BITS_TO_LONGS(NUM_MAC_INDEX_DRIVER)]; 50 unsigned long available_tsf_ids[BITS_TO_LONGS(NUM_TSF_IDS)]; 51 enum iwl_tsf_id preferred_tsf; 52 bool found_vif; 53 }; 54 55 static void iwl_mvm_mac_tsf_id_iter(void *_data, u8 *mac, 56 struct ieee80211_vif *vif) 57 { 58 struct iwl_mvm_mac_iface_iterator_data *data = _data; 59 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 60 u16 min_bi; 61 62 /* Skip the interface for which we are trying to assign a tsf_id */ 63 if (vif == data->vif) 64 return; 65 66 /* 67 * The TSF is a hardware/firmware resource, there are 4 and 68 * the driver should assign and free them as needed. However, 69 * there are cases where 2 MACs should share the same TSF ID 70 * for the purpose of clock sync, an optimization to avoid 71 * clock drift causing overlapping TBTTs/DTIMs for a GO and 72 * client in the system. 73 * 74 * The firmware will decide according to the MAC type which 75 * will be the leader and follower. Clients that need to sync 76 * with a remote station will be the leader, and an AP or GO 77 * will be the follower. 78 * 79 * Depending on the new interface type it can be following 80 * or become the leader of an existing interface. 81 */ 82 switch (data->vif->type) { 83 case NL80211_IFTYPE_STATION: 84 /* 85 * The new interface is a client, so if the one we're iterating 86 * is an AP, and the beacon interval of the AP is a multiple or 87 * divisor of the beacon interval of the client, the same TSF 88 * should be used to avoid drift between the new client and 89 * existing AP. The existing AP will get drift updates from the 90 * new client context in this case. 91 */ 92 if (vif->type != NL80211_IFTYPE_AP || 93 data->preferred_tsf != NUM_TSF_IDS || 94 !test_bit(mvmvif->tsf_id, data->available_tsf_ids)) 95 break; 96 97 min_bi = min(data->vif->bss_conf.beacon_int, 98 vif->bss_conf.beacon_int); 99 100 if (!min_bi) 101 break; 102 103 if ((data->vif->bss_conf.beacon_int - 104 vif->bss_conf.beacon_int) % min_bi == 0) { 105 data->preferred_tsf = mvmvif->tsf_id; 106 return; 107 } 108 break; 109 110 case NL80211_IFTYPE_AP: 111 /* 112 * The new interface is AP/GO, so if its beacon interval is a 113 * multiple or a divisor of the beacon interval of an existing 114 * interface, it should get drift updates from an existing 115 * client or use the same TSF as an existing GO. There's no 116 * drift between TSFs internally but if they used different 117 * TSFs then a new client MAC could update one of them and 118 * cause drift that way. 119 */ 120 if ((vif->type != NL80211_IFTYPE_AP && 121 vif->type != NL80211_IFTYPE_STATION) || 122 data->preferred_tsf != NUM_TSF_IDS || 123 !test_bit(mvmvif->tsf_id, data->available_tsf_ids)) 124 break; 125 126 min_bi = min(data->vif->bss_conf.beacon_int, 127 vif->bss_conf.beacon_int); 128 129 if (!min_bi) 130 break; 131 132 if ((data->vif->bss_conf.beacon_int - 133 vif->bss_conf.beacon_int) % min_bi == 0) { 134 data->preferred_tsf = mvmvif->tsf_id; 135 return; 136 } 137 break; 138 default: 139 /* 140 * For all other interface types there's no need to 141 * take drift into account. Either they're exclusive 142 * like IBSS and monitor, or we don't care much about 143 * their TSF (like P2P Device), but we won't be able 144 * to share the TSF resource. 145 */ 146 break; 147 } 148 149 /* 150 * Unless we exited above, we can't share the TSF resource 151 * that the virtual interface we're iterating over is using 152 * with the new one, so clear the available bit and if this 153 * was the preferred one, reset that as well. 154 */ 155 __clear_bit(mvmvif->tsf_id, data->available_tsf_ids); 156 157 if (data->preferred_tsf == mvmvif->tsf_id) 158 data->preferred_tsf = NUM_TSF_IDS; 159 } 160 161 static void iwl_mvm_mac_iface_iterator(void *_data, u8 *mac, 162 struct ieee80211_vif *vif) 163 { 164 struct iwl_mvm_mac_iface_iterator_data *data = _data; 165 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 166 167 /* Iterator may already find the interface being added -- skip it */ 168 if (vif == data->vif) { 169 data->found_vif = true; 170 return; 171 } 172 173 /* Mark MAC IDs as used by clearing the available bit, and 174 * (below) mark TSFs as used if their existing use is not 175 * compatible with the new interface type. 176 * No locking or atomic bit operations are needed since the 177 * data is on the stack of the caller function. 178 */ 179 __clear_bit(mvmvif->id, data->available_mac_ids); 180 181 /* find a suitable tsf_id */ 182 iwl_mvm_mac_tsf_id_iter(_data, mac, vif); 183 } 184 185 void iwl_mvm_mac_ctxt_recalc_tsf_id(struct iwl_mvm *mvm, 186 struct ieee80211_vif *vif) 187 { 188 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 189 struct iwl_mvm_mac_iface_iterator_data data = { 190 .mvm = mvm, 191 .vif = vif, 192 .available_tsf_ids = { (1 << NUM_TSF_IDS) - 1 }, 193 /* no preference yet */ 194 .preferred_tsf = NUM_TSF_IDS, 195 }; 196 197 ieee80211_iterate_active_interfaces_atomic( 198 mvm->hw, IEEE80211_IFACE_ITER_RESUME_ALL, 199 iwl_mvm_mac_tsf_id_iter, &data); 200 201 if (data.preferred_tsf != NUM_TSF_IDS) 202 mvmvif->tsf_id = data.preferred_tsf; 203 else if (!test_bit(mvmvif->tsf_id, data.available_tsf_ids)) 204 mvmvif->tsf_id = find_first_bit(data.available_tsf_ids, 205 NUM_TSF_IDS); 206 } 207 208 int iwl_mvm_mac_ctxt_init(struct iwl_mvm *mvm, struct ieee80211_vif *vif) 209 { 210 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 211 struct iwl_mvm_mac_iface_iterator_data data = { 212 .mvm = mvm, 213 .vif = vif, 214 .available_mac_ids = { (1 << NUM_MAC_INDEX_DRIVER) - 1 }, 215 .available_tsf_ids = { (1 << NUM_TSF_IDS) - 1 }, 216 /* no preference yet */ 217 .preferred_tsf = NUM_TSF_IDS, 218 .found_vif = false, 219 }; 220 int ret; 221 222 lockdep_assert_held(&mvm->mutex); 223 224 /* 225 * Allocate a MAC ID and a TSF for this MAC, along with the queues 226 * and other resources. 227 */ 228 229 /* 230 * Before the iterator, we start with all MAC IDs and TSFs available. 231 * 232 * During iteration, all MAC IDs are cleared that are in use by other 233 * virtual interfaces, and all TSF IDs are cleared that can't be used 234 * by this new virtual interface because they're used by an interface 235 * that can't share it with the new one. 236 * At the same time, we check if there's a preferred TSF in the case 237 * that we should share it with another interface. 238 */ 239 240 /* MAC ID 0 should be used only for the managed/IBSS vif with non-MLO 241 * FW API 242 */ 243 if (!mvm->mld_api_is_used) { 244 switch (vif->type) { 245 case NL80211_IFTYPE_ADHOC: 246 break; 247 case NL80211_IFTYPE_STATION: 248 if (!vif->p2p) 249 break; 250 fallthrough; 251 default: 252 __clear_bit(0, data.available_mac_ids); 253 } 254 } 255 256 ieee80211_iterate_active_interfaces_atomic( 257 mvm->hw, IEEE80211_IFACE_ITER_RESUME_ALL, 258 iwl_mvm_mac_iface_iterator, &data); 259 260 /* 261 * In the case we're getting here during resume, it's similar to 262 * firmware restart, and with RESUME_ALL the iterator will find 263 * the vif being added already. 264 * We don't want to reassign any IDs in either case since doing 265 * so would probably assign different IDs (as interfaces aren't 266 * necessarily added in the same order), but the old IDs were 267 * preserved anyway, so skip ID assignment for both resume and 268 * recovery. 269 */ 270 if (data.found_vif) 271 return 0; 272 273 /* Therefore, in recovery, we can't get here */ 274 if (WARN_ON_ONCE(test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status))) 275 return -EBUSY; 276 277 mvmvif->id = find_first_bit(data.available_mac_ids, 278 NUM_MAC_INDEX_DRIVER); 279 if (mvmvif->id == NUM_MAC_INDEX_DRIVER) { 280 IWL_ERR(mvm, "Failed to init MAC context - no free ID!\n"); 281 ret = -EIO; 282 goto exit_fail; 283 } 284 285 if (data.preferred_tsf != NUM_TSF_IDS) 286 mvmvif->tsf_id = data.preferred_tsf; 287 else 288 mvmvif->tsf_id = find_first_bit(data.available_tsf_ids, 289 NUM_TSF_IDS); 290 if (mvmvif->tsf_id == NUM_TSF_IDS) { 291 IWL_ERR(mvm, "Failed to init MAC context - no free TSF!\n"); 292 ret = -EIO; 293 goto exit_fail; 294 } 295 296 mvmvif->color = 0; 297 298 INIT_LIST_HEAD(&mvmvif->time_event_data.list); 299 mvmvif->time_event_data.id = TE_MAX; 300 mvmvif->roc_activity = ROC_NUM_ACTIVITIES; 301 302 iwl_mvm_init_link(&mvmvif->deflink); 303 304 /* No need to allocate data queues to P2P Device MAC and NAN.*/ 305 if (vif->type == NL80211_IFTYPE_P2P_DEVICE) 306 return 0; 307 308 /* Allocate the CAB queue for softAP and GO interfaces */ 309 if (vif->type == NL80211_IFTYPE_AP || 310 vif->type == NL80211_IFTYPE_ADHOC) { 311 /* 312 * For TVQM this will be overwritten later with the FW assigned 313 * queue value (when queue is enabled). 314 */ 315 mvmvif->deflink.cab_queue = IWL_MVM_DQA_GCAST_QUEUE; 316 } 317 318 return 0; 319 320 exit_fail: 321 memset(mvmvif, 0, sizeof(struct iwl_mvm_vif)); 322 return ret; 323 } 324 325 static void iwl_mvm_ack_rates(struct iwl_mvm *mvm, 326 struct ieee80211_vif *vif, 327 enum nl80211_band band, 328 u8 *cck_rates, u8 *ofdm_rates) 329 { 330 struct ieee80211_supported_band *sband; 331 unsigned long basic = vif->bss_conf.basic_rates; 332 int lowest_present_ofdm = 100; 333 int lowest_present_cck = 100; 334 u8 cck = 0; 335 u8 ofdm = 0; 336 int i; 337 338 sband = mvm->hw->wiphy->bands[band]; 339 340 for_each_set_bit(i, &basic, BITS_PER_LONG) { 341 int hw = sband->bitrates[i].hw_value; 342 if (hw >= IWL_FIRST_OFDM_RATE) { 343 ofdm |= BIT(hw - IWL_FIRST_OFDM_RATE); 344 if (lowest_present_ofdm > hw) 345 lowest_present_ofdm = hw; 346 } else { 347 BUILD_BUG_ON(IWL_FIRST_CCK_RATE != 0); 348 349 cck |= BIT(hw); 350 if (lowest_present_cck > hw) 351 lowest_present_cck = hw; 352 } 353 } 354 355 /* 356 * Now we've got the basic rates as bitmaps in the ofdm and cck 357 * variables. This isn't sufficient though, as there might not 358 * be all the right rates in the bitmap. E.g. if the only basic 359 * rates are 5.5 Mbps and 11 Mbps, we still need to add 1 Mbps 360 * and 6 Mbps because the 802.11-2007 standard says in 9.6: 361 * 362 * [...] a STA responding to a received frame shall transmit 363 * its Control Response frame [...] at the highest rate in the 364 * BSSBasicRateSet parameter that is less than or equal to the 365 * rate of the immediately previous frame in the frame exchange 366 * sequence ([...]) and that is of the same modulation class 367 * ([...]) as the received frame. If no rate contained in the 368 * BSSBasicRateSet parameter meets these conditions, then the 369 * control frame sent in response to a received frame shall be 370 * transmitted at the highest mandatory rate of the PHY that is 371 * less than or equal to the rate of the received frame, and 372 * that is of the same modulation class as the received frame. 373 * 374 * As a consequence, we need to add all mandatory rates that are 375 * lower than all of the basic rates to these bitmaps. 376 */ 377 378 if (IWL_RATE_24M_INDEX < lowest_present_ofdm) 379 ofdm |= IWL_RATE_BIT_MSK(24) >> IWL_FIRST_OFDM_RATE; 380 if (IWL_RATE_12M_INDEX < lowest_present_ofdm) 381 ofdm |= IWL_RATE_BIT_MSK(12) >> IWL_FIRST_OFDM_RATE; 382 /* 6M already there or needed so always add */ 383 ofdm |= IWL_RATE_BIT_MSK(6) >> IWL_FIRST_OFDM_RATE; 384 385 /* 386 * CCK is a bit more complex with DSSS vs. HR/DSSS vs. ERP. 387 * Note, however: 388 * - if no CCK rates are basic, it must be ERP since there must 389 * be some basic rates at all, so they're OFDM => ERP PHY 390 * (or we're in 5 GHz, and the cck bitmap will never be used) 391 * - if 11M is a basic rate, it must be ERP as well, so add 5.5M 392 * - if 5.5M is basic, 1M and 2M are mandatory 393 * - if 2M is basic, 1M is mandatory 394 * - if 1M is basic, that's the only valid ACK rate. 395 * As a consequence, it's not as complicated as it sounds, just add 396 * any lower rates to the ACK rate bitmap. 397 */ 398 if (IWL_RATE_11M_INDEX < lowest_present_cck) 399 cck |= IWL_RATE_BIT_MSK(11) >> IWL_FIRST_CCK_RATE; 400 if (IWL_RATE_5M_INDEX < lowest_present_cck) 401 cck |= IWL_RATE_BIT_MSK(5) >> IWL_FIRST_CCK_RATE; 402 if (IWL_RATE_2M_INDEX < lowest_present_cck) 403 cck |= IWL_RATE_BIT_MSK(2) >> IWL_FIRST_CCK_RATE; 404 /* 1M already there or needed so always add */ 405 cck |= IWL_RATE_BIT_MSK(1) >> IWL_FIRST_CCK_RATE; 406 407 *cck_rates = cck; 408 *ofdm_rates = ofdm; 409 } 410 411 void iwl_mvm_set_fw_basic_rates(struct iwl_mvm *mvm, struct ieee80211_vif *vif, 412 struct iwl_mvm_vif_link_info *link_info, 413 __le32 *cck_rates, __le32 *ofdm_rates) 414 { 415 struct iwl_mvm_phy_ctxt *phy_ctxt; 416 u8 cck_ack_rates = 0, ofdm_ack_rates = 0; 417 enum nl80211_band band = NL80211_BAND_2GHZ; 418 419 phy_ctxt = link_info->phy_ctxt; 420 if (phy_ctxt && phy_ctxt->channel) 421 band = phy_ctxt->channel->band; 422 423 iwl_mvm_ack_rates(mvm, vif, band, &cck_ack_rates, &ofdm_ack_rates); 424 425 *cck_rates = cpu_to_le32((u32)cck_ack_rates); 426 *ofdm_rates = cpu_to_le32((u32)ofdm_ack_rates); 427 } 428 429 void iwl_mvm_set_fw_protection_flags(struct iwl_mvm *mvm, 430 struct ieee80211_vif *vif, 431 struct ieee80211_bss_conf *link_conf, 432 __le32 *protection_flags, u32 ht_flag, 433 u32 tgg_flag) 434 { 435 /* for both sta and ap, ht_operation_mode hold the protection_mode */ 436 u8 protection_mode = link_conf->ht_operation_mode & 437 IEEE80211_HT_OP_MODE_PROTECTION; 438 bool ht_enabled = !!(link_conf->ht_operation_mode & 439 IEEE80211_HT_OP_MODE_PROTECTION); 440 441 if (link_conf->use_cts_prot) 442 *protection_flags |= cpu_to_le32(tgg_flag); 443 444 IWL_DEBUG_RATE(mvm, "use_cts_prot %d, ht_operation_mode %d\n", 445 link_conf->use_cts_prot, 446 link_conf->ht_operation_mode); 447 448 if (!ht_enabled) 449 return; 450 451 IWL_DEBUG_RATE(mvm, "protection mode set to %d\n", protection_mode); 452 /* 453 * See section 9.23.3.1 of IEEE 80211-2012. 454 * Nongreenfield HT STAs Present is not supported. 455 */ 456 switch (protection_mode) { 457 case IEEE80211_HT_OP_MODE_PROTECTION_NONE: 458 break; 459 case IEEE80211_HT_OP_MODE_PROTECTION_NONMEMBER: 460 case IEEE80211_HT_OP_MODE_PROTECTION_NONHT_MIXED: 461 *protection_flags |= cpu_to_le32(ht_flag); 462 break; 463 case IEEE80211_HT_OP_MODE_PROTECTION_20MHZ: 464 /* Protect when channel wider than 20MHz */ 465 if (link_conf->chanreq.oper.width > NL80211_CHAN_WIDTH_20) 466 *protection_flags |= cpu_to_le32(ht_flag); 467 break; 468 default: 469 IWL_ERR(mvm, "Illegal protection mode %d\n", 470 protection_mode); 471 break; 472 } 473 } 474 475 void iwl_mvm_set_fw_qos_params(struct iwl_mvm *mvm, struct ieee80211_vif *vif, 476 struct ieee80211_bss_conf *link_conf, 477 struct iwl_ac_qos *ac, __le32 *qos_flags) 478 { 479 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 480 struct iwl_mvm_vif_link_info *mvm_link = 481 mvmvif->link[link_conf->link_id]; 482 int i; 483 484 if (!mvm_link) 485 return; 486 487 for (i = 0; i < IEEE80211_NUM_ACS; i++) { 488 u8 txf = iwl_mvm_mac_ac_to_tx_fifo(mvm, i); 489 u8 ucode_ac = iwl_mvm_mac80211_ac_to_ucode_ac(i); 490 491 ac[ucode_ac].cw_min = 492 cpu_to_le16(mvm_link->queue_params[i].cw_min); 493 ac[ucode_ac].cw_max = 494 cpu_to_le16(mvm_link->queue_params[i].cw_max); 495 ac[ucode_ac].edca_txop = 496 cpu_to_le16(mvm_link->queue_params[i].txop * 32); 497 ac[ucode_ac].aifsn = mvm_link->queue_params[i].aifs; 498 ac[ucode_ac].fifos_mask = BIT(txf); 499 } 500 501 if (link_conf->qos) 502 *qos_flags |= cpu_to_le32(MAC_QOS_FLG_UPDATE_EDCA); 503 504 if (link_conf->chanreq.oper.width != NL80211_CHAN_WIDTH_20_NOHT) 505 *qos_flags |= cpu_to_le32(MAC_QOS_FLG_TGN); 506 } 507 508 int iwl_mvm_get_mac_type(struct ieee80211_vif *vif) 509 { 510 u32 mac_type = FW_MAC_TYPE_BSS_STA; 511 512 switch (vif->type) { 513 case NL80211_IFTYPE_STATION: 514 if (vif->p2p) 515 mac_type = FW_MAC_TYPE_P2P_STA; 516 else 517 mac_type = FW_MAC_TYPE_BSS_STA; 518 break; 519 case NL80211_IFTYPE_AP: 520 mac_type = FW_MAC_TYPE_GO; 521 break; 522 case NL80211_IFTYPE_MONITOR: 523 mac_type = FW_MAC_TYPE_LISTENER; 524 break; 525 case NL80211_IFTYPE_P2P_DEVICE: 526 mac_type = FW_MAC_TYPE_P2P_DEVICE; 527 break; 528 case NL80211_IFTYPE_ADHOC: 529 mac_type = FW_MAC_TYPE_IBSS; 530 break; 531 default: 532 WARN_ON_ONCE(1); 533 } 534 return mac_type; 535 } 536 537 static void iwl_mvm_mac_ctxt_cmd_common(struct iwl_mvm *mvm, 538 struct ieee80211_vif *vif, 539 struct iwl_mac_ctx_cmd *cmd, 540 const u8 *bssid_override, 541 u32 action) 542 { 543 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 544 const u8 *bssid = bssid_override ?: vif->bss_conf.bssid; 545 u32 ht_flag; 546 547 cmd->id_and_color = cpu_to_le32(FW_CMD_ID_AND_COLOR(mvmvif->id, 548 mvmvif->color)); 549 cmd->action = cpu_to_le32(action); 550 cmd->mac_type = cpu_to_le32(iwl_mvm_get_mac_type(vif)); 551 552 cmd->tsf_id = cpu_to_le32(mvmvif->tsf_id); 553 554 memcpy(cmd->node_addr, vif->addr, ETH_ALEN); 555 556 if (bssid) 557 memcpy(cmd->bssid_addr, bssid, ETH_ALEN); 558 else 559 eth_broadcast_addr(cmd->bssid_addr); 560 561 iwl_mvm_set_fw_basic_rates(mvm, vif, &mvmvif->deflink, &cmd->cck_rates, 562 &cmd->ofdm_rates); 563 564 cmd->cck_short_preamble = 565 cpu_to_le32(vif->bss_conf.use_short_preamble ? 566 MAC_FLG_SHORT_PREAMBLE : 0); 567 cmd->short_slot = 568 cpu_to_le32(vif->bss_conf.use_short_slot ? 569 MAC_FLG_SHORT_SLOT : 0); 570 571 cmd->filter_flags = 0; 572 573 iwl_mvm_set_fw_qos_params(mvm, vif, &vif->bss_conf, cmd->ac, 574 &cmd->qos_flags); 575 576 /* The fw does not distinguish between ht and fat */ 577 ht_flag = MAC_PROT_FLG_HT_PROT | MAC_PROT_FLG_FAT_PROT; 578 iwl_mvm_set_fw_protection_flags(mvm, vif, &vif->bss_conf, 579 &cmd->protection_flags, 580 ht_flag, MAC_PROT_FLG_TGG_PROTECT); 581 } 582 583 static int iwl_mvm_mac_ctxt_send_cmd(struct iwl_mvm *mvm, 584 struct iwl_mac_ctx_cmd *cmd) 585 { 586 int ret = iwl_mvm_send_cmd_pdu(mvm, MAC_CONTEXT_CMD, 0, 587 sizeof(*cmd), cmd); 588 if (ret) 589 IWL_ERR(mvm, "Failed to send MAC_CONTEXT_CMD (action:%d): %d\n", 590 le32_to_cpu(cmd->action), ret); 591 return ret; 592 } 593 594 void iwl_mvm_set_fw_dtim_tbtt(struct iwl_mvm *mvm, struct ieee80211_vif *vif, 595 struct ieee80211_bss_conf *link_conf, 596 __le64 *dtim_tsf, __le32 *dtim_time, 597 __le32 *assoc_beacon_arrive_time) 598 { 599 u32 dtim_offs; 600 601 /* 602 * The DTIM count counts down, so when it is N that means N 603 * more beacon intervals happen until the DTIM TBTT. Therefore 604 * add this to the current time. If that ends up being in the 605 * future, the firmware will handle it. 606 * 607 * Also note that the system_timestamp (which we get here as 608 * "sync_device_ts") and TSF timestamp aren't at exactly the 609 * same offset in the frame -- the TSF is at the first symbol 610 * of the TSF, the system timestamp is at signal acquisition 611 * time. This means there's an offset between them of at most 612 * a few hundred microseconds (24 * 8 bits + PLCP time gives 613 * 384us in the longest case), this is currently not relevant 614 * as the firmware wakes up around 2ms before the TBTT. 615 */ 616 dtim_offs = link_conf->sync_dtim_count * 617 link_conf->beacon_int; 618 /* convert TU to usecs */ 619 dtim_offs *= 1024; 620 621 *dtim_tsf = 622 cpu_to_le64(link_conf->sync_tsf + dtim_offs); 623 *dtim_time = 624 cpu_to_le32(link_conf->sync_device_ts + dtim_offs); 625 *assoc_beacon_arrive_time = 626 cpu_to_le32(link_conf->sync_device_ts); 627 628 IWL_DEBUG_INFO(mvm, "DTIM TBTT is 0x%llx/0x%x, offset %d\n", 629 le64_to_cpu(*dtim_tsf), 630 le32_to_cpu(*dtim_time), 631 dtim_offs); 632 } 633 634 __le32 iwl_mvm_mac_ctxt_cmd_p2p_sta_get_oppps_ctwin(struct iwl_mvm *mvm, 635 struct ieee80211_vif *vif) 636 { 637 struct ieee80211_p2p_noa_attr *noa = 638 &vif->bss_conf.p2p_noa_attr; 639 640 return cpu_to_le32(noa->oppps_ctwindow & 641 IEEE80211_P2P_OPPPS_CTWINDOW_MASK); 642 } 643 644 u32 iwl_mvm_mac_ctxt_cmd_sta_get_twt_policy(struct iwl_mvm *mvm, 645 struct ieee80211_vif *vif) 646 { 647 u32 twt_policy = 0; 648 649 if (vif->bss_conf.twt_requester && IWL_MVM_USE_TWT) 650 twt_policy |= TWT_SUPPORTED; 651 if (vif->bss_conf.twt_protected) 652 twt_policy |= PROTECTED_TWT_SUPPORTED; 653 if (vif->bss_conf.twt_broadcast) 654 twt_policy |= BROADCAST_TWT_SUPPORTED; 655 656 return twt_policy; 657 } 658 659 static int iwl_mvm_mac_ctxt_cmd_sta(struct iwl_mvm *mvm, 660 struct ieee80211_vif *vif, 661 u32 action, bool force_assoc_off, 662 const u8 *bssid_override) 663 { 664 struct iwl_mac_ctx_cmd cmd = {}; 665 struct iwl_mac_data_sta *ctxt_sta; 666 667 WARN_ON(vif->type != NL80211_IFTYPE_STATION); 668 669 /* Fill the common data for all mac context types */ 670 iwl_mvm_mac_ctxt_cmd_common(mvm, vif, &cmd, bssid_override, action); 671 672 /* 673 * We always want to hear MCAST frames, if we're not authorized yet, 674 * we'll drop them. 675 */ 676 cmd.filter_flags |= cpu_to_le32(MAC_FILTER_ACCEPT_GRP); 677 678 if (vif->p2p) { 679 cmd.p2p_sta.ctwin = 680 iwl_mvm_mac_ctxt_cmd_p2p_sta_get_oppps_ctwin(mvm, vif); 681 682 ctxt_sta = &cmd.p2p_sta.sta; 683 } else { 684 ctxt_sta = &cmd.sta; 685 } 686 687 /* We need the dtim_period to set the MAC as associated */ 688 if (vif->cfg.assoc && vif->bss_conf.dtim_period && 689 !force_assoc_off) { 690 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 691 692 iwl_mvm_set_fw_dtim_tbtt(mvm, vif, &vif->bss_conf, 693 &ctxt_sta->dtim_tsf, 694 &ctxt_sta->dtim_time, 695 &ctxt_sta->assoc_beacon_arrive_time); 696 697 ctxt_sta->is_assoc = cpu_to_le32(1); 698 699 if (!mvmvif->authorized && 700 fw_has_capa(&mvm->fw->ucode_capa, 701 IWL_UCODE_TLV_CAPA_COEX_HIGH_PRIO)) 702 ctxt_sta->data_policy |= 703 cpu_to_le32(COEX_HIGH_PRIORITY_ENABLE); 704 } else { 705 ctxt_sta->is_assoc = cpu_to_le32(0); 706 707 /* Allow beacons to pass through as long as we are not 708 * associated, or we do not have dtim period information. 709 */ 710 cmd.filter_flags |= cpu_to_le32(MAC_FILTER_IN_BEACON); 711 } 712 713 ctxt_sta->bi = cpu_to_le32(vif->bss_conf.beacon_int); 714 ctxt_sta->dtim_interval = cpu_to_le32(vif->bss_conf.beacon_int * 715 vif->bss_conf.dtim_period); 716 717 ctxt_sta->listen_interval = cpu_to_le32(mvm->hw->conf.listen_interval); 718 ctxt_sta->assoc_id = cpu_to_le32(vif->cfg.aid); 719 720 if (vif->probe_req_reg && vif->cfg.assoc && vif->p2p) 721 cmd.filter_flags |= cpu_to_le32(MAC_FILTER_IN_PROBE_REQUEST); 722 723 if (vif->bss_conf.he_support && !iwlwifi_mod_params.disable_11ax) { 724 cmd.filter_flags |= cpu_to_le32(MAC_FILTER_IN_11AX); 725 ctxt_sta->data_policy |= 726 cpu_to_le32(iwl_mvm_mac_ctxt_cmd_sta_get_twt_policy(mvm, vif)); 727 } 728 729 730 return iwl_mvm_mac_ctxt_send_cmd(mvm, &cmd); 731 } 732 733 static int iwl_mvm_mac_ctxt_cmd_listener(struct iwl_mvm *mvm, 734 struct ieee80211_vif *vif, 735 u32 action) 736 { 737 struct iwl_mac_ctx_cmd cmd = {}; 738 u32 tfd_queue_msk = 0; 739 int ret; 740 741 WARN_ON(vif->type != NL80211_IFTYPE_MONITOR); 742 743 iwl_mvm_mac_ctxt_cmd_common(mvm, vif, &cmd, NULL, action); 744 745 cmd.filter_flags = cpu_to_le32(MAC_FILTER_IN_PROMISC | 746 MAC_FILTER_IN_CONTROL_AND_MGMT | 747 MAC_FILTER_IN_BEACON | 748 MAC_FILTER_IN_PROBE_REQUEST | 749 MAC_FILTER_IN_CRC32 | 750 MAC_FILTER_ACCEPT_GRP); 751 ieee80211_hw_set(mvm->hw, RX_INCLUDES_FCS); 752 753 /* 754 * the queue mask is only relevant for old TX API, and 755 * mvm->snif_queue isn't set here (it's still set to 756 * IWL_MVM_INVALID_QUEUE so the BIT() of it is UB) 757 */ 758 if (!iwl_mvm_has_new_tx_api(mvm)) 759 tfd_queue_msk = BIT(mvm->snif_queue); 760 761 /* Allocate sniffer station */ 762 ret = iwl_mvm_allocate_int_sta(mvm, &mvm->snif_sta, tfd_queue_msk, 763 vif->type, IWL_STA_GENERAL_PURPOSE); 764 if (ret) 765 return ret; 766 767 return iwl_mvm_mac_ctxt_send_cmd(mvm, &cmd); 768 } 769 770 static int iwl_mvm_mac_ctxt_cmd_ibss(struct iwl_mvm *mvm, 771 struct ieee80211_vif *vif, 772 u32 action) 773 { 774 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 775 struct iwl_mac_ctx_cmd cmd = {}; 776 777 WARN_ON(vif->type != NL80211_IFTYPE_ADHOC); 778 779 iwl_mvm_mac_ctxt_cmd_common(mvm, vif, &cmd, NULL, action); 780 781 cmd.filter_flags = cpu_to_le32(MAC_FILTER_IN_BEACON | 782 MAC_FILTER_IN_PROBE_REQUEST | 783 MAC_FILTER_ACCEPT_GRP); 784 785 /* cmd.ibss.beacon_time/cmd.ibss.beacon_tsf are curently ignored */ 786 cmd.ibss.bi = cpu_to_le32(vif->bss_conf.beacon_int); 787 788 /* TODO: Assumes that the beacon id == mac context id */ 789 cmd.ibss.beacon_template = cpu_to_le32(mvmvif->id); 790 791 return iwl_mvm_mac_ctxt_send_cmd(mvm, &cmd); 792 } 793 794 struct iwl_mvm_go_iterator_data { 795 bool go_active; 796 }; 797 798 static void iwl_mvm_go_iterator(void *_data, u8 *mac, struct ieee80211_vif *vif) 799 { 800 struct iwl_mvm_go_iterator_data *data = _data; 801 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 802 803 if (vif->type == NL80211_IFTYPE_AP && vif->p2p && 804 mvmvif->ap_ibss_active) 805 data->go_active = true; 806 } 807 808 __le32 iwl_mac_ctxt_p2p_dev_has_extended_disc(struct iwl_mvm *mvm, 809 struct ieee80211_vif *vif) 810 { 811 struct iwl_mvm_go_iterator_data data = {}; 812 813 /* 814 * This flag should be set to true when the P2P Device is 815 * discoverable and there is at least another active P2P GO. Settings 816 * this flag will allow the P2P Device to be discoverable on other 817 * channels in addition to its listen channel. 818 * Note that this flag should not be set in other cases as it opens the 819 * Rx filters on all MAC and increases the number of interrupts. 820 */ 821 ieee80211_iterate_active_interfaces_atomic( 822 mvm->hw, IEEE80211_IFACE_ITER_RESUME_ALL, 823 iwl_mvm_go_iterator, &data); 824 825 return cpu_to_le32(data.go_active ? 1 : 0); 826 } 827 828 static int iwl_mvm_mac_ctxt_cmd_p2p_device(struct iwl_mvm *mvm, 829 struct ieee80211_vif *vif, 830 u32 action) 831 { 832 struct iwl_mac_ctx_cmd cmd = {}; 833 834 WARN_ON(vif->type != NL80211_IFTYPE_P2P_DEVICE); 835 836 iwl_mvm_mac_ctxt_cmd_common(mvm, vif, &cmd, NULL, action); 837 838 cmd.p2p_dev.is_disc_extended = 839 iwl_mac_ctxt_p2p_dev_has_extended_disc(mvm, vif); 840 841 /* Override the filter flags to accept only probe requests */ 842 cmd.filter_flags = cpu_to_le32(MAC_FILTER_IN_PROBE_REQUEST); 843 844 return iwl_mvm_mac_ctxt_send_cmd(mvm, &cmd); 845 } 846 847 void iwl_mvm_mac_ctxt_set_tim(struct iwl_mvm *mvm, 848 __le32 *tim_index, __le32 *tim_size, 849 u8 *beacon, u32 frame_size) 850 { 851 u32 tim_idx; 852 struct ieee80211_mgmt *mgmt = (struct ieee80211_mgmt *)beacon; 853 854 /* The index is relative to frame start but we start looking at the 855 * variable-length part of the beacon. */ 856 tim_idx = mgmt->u.beacon.variable - beacon; 857 858 /* Parse variable-length elements of beacon to find WLAN_EID_TIM */ 859 while ((tim_idx < (frame_size - 2)) && 860 (beacon[tim_idx] != WLAN_EID_TIM)) 861 tim_idx += beacon[tim_idx+1] + 2; 862 863 /* If TIM field was found, set variables */ 864 if ((tim_idx < (frame_size - 1)) && (beacon[tim_idx] == WLAN_EID_TIM)) { 865 *tim_index = cpu_to_le32(tim_idx); 866 *tim_size = cpu_to_le32((u32)beacon[tim_idx + 1]); 867 } else { 868 IWL_WARN(mvm, "Unable to find TIM Element in beacon\n"); 869 } 870 } 871 872 u8 iwl_mvm_mac_ctxt_get_lowest_rate(struct iwl_mvm *mvm, 873 struct ieee80211_tx_info *info, 874 struct ieee80211_vif *vif) 875 { 876 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 877 struct ieee80211_supported_band *sband; 878 unsigned long basic = vif->bss_conf.basic_rates; 879 u16 lowest_cck = IWL_RATE_COUNT, lowest_ofdm = IWL_RATE_COUNT; 880 u32 link_id = u32_get_bits(info->control.flags, 881 IEEE80211_TX_CTRL_MLO_LINK); 882 u8 band = info->band; 883 u8 rate; 884 u32 i; 885 886 if (link_id == IEEE80211_LINK_UNSPECIFIED && ieee80211_vif_is_mld(vif)) { 887 for (i = 0; i < ARRAY_SIZE(mvmvif->link); i++) { 888 if (!mvmvif->link[i]) 889 continue; 890 /* shouldn't do this when >1 link is active */ 891 WARN_ON_ONCE(link_id != IEEE80211_LINK_UNSPECIFIED); 892 link_id = i; 893 } 894 } 895 896 if (link_id < IEEE80211_LINK_UNSPECIFIED) { 897 struct ieee80211_bss_conf *link_conf; 898 899 rcu_read_lock(); 900 link_conf = rcu_dereference(vif->link_conf[link_id]); 901 if (link_conf) { 902 basic = link_conf->basic_rates; 903 if (link_conf->chanreq.oper.chan) 904 band = link_conf->chanreq.oper.chan->band; 905 } 906 rcu_read_unlock(); 907 } 908 909 sband = mvm->hw->wiphy->bands[band]; 910 for_each_set_bit(i, &basic, BITS_PER_LONG) { 911 u16 hw = sband->bitrates[i].hw_value; 912 913 if (hw >= IWL_FIRST_OFDM_RATE) { 914 if (lowest_ofdm > hw) 915 lowest_ofdm = hw; 916 } else if (lowest_cck > hw) { 917 lowest_cck = hw; 918 } 919 } 920 921 if (band == NL80211_BAND_2GHZ && !vif->p2p && 922 vif->type != NL80211_IFTYPE_P2P_DEVICE && 923 !(info->flags & IEEE80211_TX_CTL_NO_CCK_RATE)) { 924 if (lowest_cck != IWL_RATE_COUNT) 925 rate = lowest_cck; 926 else if (lowest_ofdm != IWL_RATE_COUNT) 927 rate = lowest_ofdm; 928 else 929 rate = IWL_RATE_1M_INDEX; 930 } else if (lowest_ofdm != IWL_RATE_COUNT) { 931 rate = lowest_ofdm; 932 } else { 933 rate = IWL_RATE_6M_INDEX; 934 } 935 936 return rate; 937 } 938 939 u16 iwl_mvm_mac_ctxt_get_beacon_flags(const struct iwl_fw *fw, u8 rate_idx) 940 { 941 u16 flags = iwl_mvm_mac80211_idx_to_hwrate(fw, rate_idx); 942 bool is_new_rate = iwl_fw_lookup_cmd_ver(fw, BEACON_TEMPLATE_CMD, 0) > 10; 943 944 if (rate_idx <= IWL_FIRST_CCK_RATE) 945 flags |= is_new_rate ? IWL_MAC_BEACON_CCK 946 : IWL_MAC_BEACON_CCK_V1; 947 948 return flags; 949 } 950 951 u8 iwl_mvm_mac_ctxt_get_beacon_rate(struct iwl_mvm *mvm, 952 struct ieee80211_tx_info *info, 953 struct ieee80211_vif *vif) 954 { 955 struct ieee80211_supported_band *sband = 956 mvm->hw->wiphy->bands[info->band]; 957 u32 legacy = vif->bss_conf.beacon_tx_rate.control[info->band].legacy; 958 959 /* if beacon rate was configured try using it */ 960 if (hweight32(legacy) == 1) { 961 u32 rate = ffs(legacy) - 1; 962 963 return sband->bitrates[rate].hw_value; 964 } 965 966 return iwl_mvm_mac_ctxt_get_lowest_rate(mvm, info, vif); 967 } 968 969 static void iwl_mvm_mac_ctxt_set_tx(struct iwl_mvm *mvm, 970 struct ieee80211_vif *vif, 971 struct sk_buff *beacon, 972 struct iwl_tx_cmd *tx) 973 { 974 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 975 struct ieee80211_tx_info *info; 976 u8 rate; 977 u32 tx_flags; 978 979 info = IEEE80211_SKB_CB(beacon); 980 981 /* Set up TX command fields */ 982 tx->len = cpu_to_le16((u16)beacon->len); 983 tx->sta_id = mvmvif->deflink.bcast_sta.sta_id; 984 tx->life_time = cpu_to_le32(TX_CMD_LIFE_TIME_INFINITE); 985 tx_flags = TX_CMD_FLG_SEQ_CTL | TX_CMD_FLG_TSF; 986 tx_flags |= 987 iwl_mvm_bt_coex_tx_prio(mvm, (void *)beacon->data, info, 0) << 988 TX_CMD_FLG_BT_PRIO_POS; 989 tx->tx_flags = cpu_to_le32(tx_flags); 990 991 if (!fw_has_capa(&mvm->fw->ucode_capa, 992 IWL_UCODE_TLV_CAPA_BEACON_ANT_SELECTION)) { 993 iwl_mvm_toggle_tx_ant(mvm, &mvm->mgmt_last_antenna_idx); 994 995 tx->rate_n_flags = 996 cpu_to_le32(BIT(mvm->mgmt_last_antenna_idx) << 997 RATE_MCS_ANT_POS); 998 } 999 1000 rate = iwl_mvm_mac_ctxt_get_beacon_rate(mvm, info, vif); 1001 1002 tx->rate_n_flags |= 1003 cpu_to_le32(iwl_mvm_mac80211_idx_to_hwrate(mvm->fw, rate)); 1004 if (rate == IWL_FIRST_CCK_RATE) 1005 tx->rate_n_flags |= cpu_to_le32(RATE_MCS_CCK_MSK_V1); 1006 1007 } 1008 1009 int iwl_mvm_mac_ctxt_send_beacon_cmd(struct iwl_mvm *mvm, 1010 struct sk_buff *beacon, 1011 void *data, int len) 1012 { 1013 struct iwl_host_cmd cmd = { 1014 .id = BEACON_TEMPLATE_CMD, 1015 .flags = CMD_ASYNC, 1016 }; 1017 1018 cmd.len[0] = len; 1019 cmd.data[0] = data; 1020 cmd.dataflags[0] = 0; 1021 cmd.len[1] = beacon->len; 1022 cmd.data[1] = beacon->data; 1023 cmd.dataflags[1] = IWL_HCMD_DFL_DUP; 1024 1025 return iwl_mvm_send_cmd(mvm, &cmd); 1026 } 1027 1028 static int iwl_mvm_mac_ctxt_send_beacon_v6(struct iwl_mvm *mvm, 1029 struct ieee80211_vif *vif, 1030 struct sk_buff *beacon) 1031 { 1032 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 1033 struct iwl_mac_beacon_cmd_v6 beacon_cmd = {}; 1034 1035 iwl_mvm_mac_ctxt_set_tx(mvm, vif, beacon, &beacon_cmd.tx); 1036 1037 beacon_cmd.template_id = cpu_to_le32((u32)mvmvif->id); 1038 1039 if (vif->type == NL80211_IFTYPE_AP) 1040 iwl_mvm_mac_ctxt_set_tim(mvm, &beacon_cmd.tim_idx, 1041 &beacon_cmd.tim_size, 1042 beacon->data, beacon->len); 1043 1044 return iwl_mvm_mac_ctxt_send_beacon_cmd(mvm, beacon, &beacon_cmd, 1045 sizeof(beacon_cmd)); 1046 } 1047 1048 static int iwl_mvm_mac_ctxt_send_beacon_v7(struct iwl_mvm *mvm, 1049 struct ieee80211_vif *vif, 1050 struct sk_buff *beacon) 1051 { 1052 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 1053 struct iwl_mac_beacon_cmd_v7 beacon_cmd = {}; 1054 1055 iwl_mvm_mac_ctxt_set_tx(mvm, vif, beacon, &beacon_cmd.tx); 1056 1057 beacon_cmd.template_id = cpu_to_le32((u32)mvmvif->id); 1058 1059 if (vif->type == NL80211_IFTYPE_AP) 1060 iwl_mvm_mac_ctxt_set_tim(mvm, &beacon_cmd.tim_idx, 1061 &beacon_cmd.tim_size, 1062 beacon->data, beacon->len); 1063 1064 beacon_cmd.csa_offset = 1065 cpu_to_le32(iwl_find_ie_offset(beacon->data, 1066 WLAN_EID_CHANNEL_SWITCH, 1067 beacon->len)); 1068 beacon_cmd.ecsa_offset = 1069 cpu_to_le32(iwl_find_ie_offset(beacon->data, 1070 WLAN_EID_EXT_CHANSWITCH_ANN, 1071 beacon->len)); 1072 1073 return iwl_mvm_mac_ctxt_send_beacon_cmd(mvm, beacon, &beacon_cmd, 1074 sizeof(beacon_cmd)); 1075 } 1076 1077 bool iwl_mvm_enable_fils(struct iwl_mvm *mvm, 1078 struct ieee80211_vif *vif, 1079 struct ieee80211_chanctx_conf *ctx) 1080 { 1081 if (vif->type != NL80211_IFTYPE_AP || IWL_MVM_DISABLE_AP_FILS) 1082 return false; 1083 1084 if (cfg80211_channel_is_psc(ctx->def.chan)) 1085 return true; 1086 1087 return (ctx->def.chan->band == NL80211_BAND_6GHZ && 1088 ctx->def.width >= NL80211_CHAN_WIDTH_80); 1089 } 1090 1091 static int iwl_mvm_mac_ctxt_send_beacon_v9(struct iwl_mvm *mvm, 1092 struct ieee80211_vif *vif, 1093 struct sk_buff *beacon, 1094 struct ieee80211_bss_conf *link_conf) 1095 { 1096 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 1097 struct ieee80211_tx_info *info = IEEE80211_SKB_CB(beacon); 1098 struct iwl_mac_beacon_cmd beacon_cmd = {}; 1099 u8 rate = iwl_mvm_mac_ctxt_get_beacon_rate(mvm, info, vif); 1100 u16 flags; 1101 struct ieee80211_chanctx_conf *ctx; 1102 int channel; 1103 flags = iwl_mvm_mac_ctxt_get_beacon_flags(mvm->fw, rate); 1104 1105 /* Enable FILS on PSC channels only */ 1106 rcu_read_lock(); 1107 ctx = rcu_dereference(link_conf->chanctx_conf); 1108 channel = ieee80211_frequency_to_channel(ctx->def.chan->center_freq); 1109 WARN_ON(channel == 0); 1110 if (iwl_mvm_enable_fils(mvm, vif, ctx)) { 1111 flags |= iwl_fw_lookup_cmd_ver(mvm->fw, BEACON_TEMPLATE_CMD, 1112 0) > 10 ? 1113 IWL_MAC_BEACON_FILS : 1114 IWL_MAC_BEACON_FILS_V1; 1115 beacon_cmd.short_ssid = 1116 cpu_to_le32(~crc32_le(~0, vif->cfg.ssid, 1117 vif->cfg.ssid_len)); 1118 } 1119 rcu_read_unlock(); 1120 1121 beacon_cmd.flags = cpu_to_le16(flags); 1122 beacon_cmd.byte_cnt = cpu_to_le16((u16)beacon->len); 1123 1124 if (WARN_ON(!mvmvif->link[link_conf->link_id])) 1125 return -EINVAL; 1126 1127 if (iwl_fw_lookup_cmd_ver(mvm->fw, BEACON_TEMPLATE_CMD, 0) > 12) 1128 beacon_cmd.link_id = 1129 cpu_to_le32(mvmvif->link[link_conf->link_id]->fw_link_id); 1130 else 1131 beacon_cmd.link_id = cpu_to_le32((u32)mvmvif->id); 1132 1133 if (vif->type == NL80211_IFTYPE_AP) 1134 iwl_mvm_mac_ctxt_set_tim(mvm, &beacon_cmd.tim_idx, 1135 &beacon_cmd.tim_size, 1136 beacon->data, beacon->len); 1137 1138 beacon_cmd.csa_offset = 1139 cpu_to_le32(iwl_find_ie_offset(beacon->data, 1140 WLAN_EID_CHANNEL_SWITCH, 1141 beacon->len)); 1142 beacon_cmd.ecsa_offset = 1143 cpu_to_le32(iwl_find_ie_offset(beacon->data, 1144 WLAN_EID_EXT_CHANSWITCH_ANN, 1145 beacon->len)); 1146 1147 if (vif->type == NL80211_IFTYPE_AP && 1148 iwl_fw_lookup_cmd_ver(mvm->fw, BEACON_TEMPLATE_CMD, 0) >= 14) 1149 beacon_cmd.btwt_offset = 1150 cpu_to_le32(iwl_find_ie_offset(beacon->data, 1151 WLAN_EID_S1G_TWT, 1152 beacon->len)); 1153 1154 return iwl_mvm_mac_ctxt_send_beacon_cmd(mvm, beacon, &beacon_cmd, 1155 sizeof(beacon_cmd)); 1156 } 1157 1158 static int iwl_mvm_mac_ctxt_send_beacon(struct iwl_mvm *mvm, 1159 struct ieee80211_vif *vif, 1160 struct sk_buff *beacon, 1161 struct ieee80211_bss_conf *link_conf) 1162 { 1163 if (WARN_ON(!beacon)) 1164 return -EINVAL; 1165 1166 if (IWL_MVM_NON_TRANSMITTING_AP) 1167 return 0; 1168 1169 if (!fw_has_capa(&mvm->fw->ucode_capa, 1170 IWL_UCODE_TLV_CAPA_CSA_AND_TBTT_OFFLOAD)) 1171 return iwl_mvm_mac_ctxt_send_beacon_v6(mvm, vif, beacon); 1172 1173 if (fw_has_api(&mvm->fw->ucode_capa, 1174 IWL_UCODE_TLV_API_NEW_BEACON_TEMPLATE)) 1175 return iwl_mvm_mac_ctxt_send_beacon_v9(mvm, vif, beacon, 1176 link_conf); 1177 1178 return iwl_mvm_mac_ctxt_send_beacon_v7(mvm, vif, beacon); 1179 } 1180 1181 /* The beacon template for the AP/GO/IBSS has changed and needs update */ 1182 int iwl_mvm_mac_ctxt_beacon_changed(struct iwl_mvm *mvm, 1183 struct ieee80211_vif *vif, 1184 struct ieee80211_bss_conf *link_conf) 1185 { 1186 struct sk_buff *beacon; 1187 int ret; 1188 1189 WARN_ON(vif->type != NL80211_IFTYPE_AP && 1190 vif->type != NL80211_IFTYPE_ADHOC); 1191 1192 beacon = ieee80211_beacon_get_template(mvm->hw, vif, NULL, 1193 link_conf->link_id); 1194 if (!beacon) 1195 return -ENOMEM; 1196 1197 #ifdef CONFIG_IWLWIFI_DEBUGFS 1198 if (mvm->beacon_inject_active) { 1199 dev_kfree_skb(beacon); 1200 return -EBUSY; 1201 } 1202 #endif 1203 1204 ret = iwl_mvm_mac_ctxt_send_beacon(mvm, vif, beacon, link_conf); 1205 dev_kfree_skb(beacon); 1206 return ret; 1207 } 1208 1209 struct iwl_mvm_mac_ap_iterator_data { 1210 struct iwl_mvm *mvm; 1211 struct ieee80211_vif *vif; 1212 u32 beacon_device_ts; 1213 u16 beacon_int; 1214 }; 1215 1216 /* Find the beacon_device_ts and beacon_int for a managed interface */ 1217 static void iwl_mvm_mac_ap_iterator(void *_data, u8 *mac, 1218 struct ieee80211_vif *vif) 1219 { 1220 struct iwl_mvm_mac_ap_iterator_data *data = _data; 1221 1222 if (vif->type != NL80211_IFTYPE_STATION || !vif->cfg.assoc) 1223 return; 1224 1225 /* Station client has higher priority over P2P client*/ 1226 if (vif->p2p && data->beacon_device_ts) 1227 return; 1228 1229 data->beacon_device_ts = vif->bss_conf.sync_device_ts; 1230 data->beacon_int = vif->bss_conf.beacon_int; 1231 } 1232 1233 /* 1234 * Fill the filter flags for mac context of type AP or P2P GO. 1235 */ 1236 void iwl_mvm_mac_ctxt_cmd_ap_set_filter_flags(struct iwl_mvm *mvm, 1237 struct iwl_mvm_vif *mvmvif, 1238 __le32 *filter_flags, 1239 int accept_probe_req_flag, 1240 int accept_beacon_flag) 1241 { 1242 /* 1243 * in AP mode, pass probe requests and beacons from other APs 1244 * (needed for ht protection); when there're no any associated 1245 * station don't ask FW to pass beacons to prevent unnecessary 1246 * wake-ups. 1247 */ 1248 *filter_flags |= cpu_to_le32(accept_probe_req_flag); 1249 if (mvmvif->ap_assoc_sta_count || !mvm->drop_bcn_ap_mode) { 1250 *filter_flags |= cpu_to_le32(accept_beacon_flag); 1251 IWL_DEBUG_HC(mvm, "Asking FW to pass beacons\n"); 1252 } else { 1253 IWL_DEBUG_HC(mvm, "No need to receive beacons\n"); 1254 } 1255 } 1256 1257 /* 1258 * Fill the specific data for mac context of type AP of P2P GO 1259 */ 1260 static void iwl_mvm_mac_ctxt_cmd_fill_ap(struct iwl_mvm *mvm, 1261 struct ieee80211_vif *vif, 1262 struct iwl_mac_ctx_cmd *cmd, 1263 struct iwl_mac_data_ap *ctxt_ap, 1264 bool add) 1265 { 1266 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 1267 struct iwl_mvm_mac_ap_iterator_data data = { 1268 .mvm = mvm, 1269 .vif = vif, 1270 .beacon_device_ts = 0 1271 }; 1272 1273 /* in AP mode, the MCAST FIFO takes the EDCA params from VO */ 1274 cmd->ac[IWL_MVM_TX_FIFO_VO].fifos_mask |= BIT(IWL_MVM_TX_FIFO_MCAST); 1275 1276 iwl_mvm_mac_ctxt_cmd_ap_set_filter_flags(mvm, mvmvif, 1277 &cmd->filter_flags, 1278 MAC_FILTER_IN_PROBE_REQUEST, 1279 MAC_FILTER_IN_BEACON); 1280 1281 ctxt_ap->bi = cpu_to_le32(vif->bss_conf.beacon_int); 1282 ctxt_ap->dtim_interval = cpu_to_le32(vif->bss_conf.beacon_int * 1283 vif->bss_conf.dtim_period); 1284 1285 if (!fw_has_api(&mvm->fw->ucode_capa, 1286 IWL_UCODE_TLV_API_STA_TYPE)) 1287 ctxt_ap->mcast_qid = cpu_to_le32(mvmvif->deflink.cab_queue); 1288 1289 /* 1290 * Only set the beacon time when the MAC is being added, when we 1291 * just modify the MAC then we should keep the time -- the firmware 1292 * can otherwise have a "jumping" TBTT. 1293 */ 1294 if (add) { 1295 /* 1296 * If there is a station/P2P client interface which is 1297 * associated, set the AP's TBTT far enough from the station's 1298 * TBTT. Otherwise, set it to the current system time 1299 */ 1300 ieee80211_iterate_active_interfaces_atomic( 1301 mvm->hw, IEEE80211_IFACE_ITER_RESUME_ALL, 1302 iwl_mvm_mac_ap_iterator, &data); 1303 1304 if (data.beacon_device_ts) { 1305 u32 rand = get_random_u32_inclusive(36, 63); 1306 mvmvif->ap_beacon_time = data.beacon_device_ts + 1307 ieee80211_tu_to_usec(data.beacon_int * rand / 1308 100); 1309 } else { 1310 mvmvif->ap_beacon_time = iwl_mvm_get_systime(mvm); 1311 } 1312 } 1313 1314 ctxt_ap->beacon_time = cpu_to_le32(mvmvif->ap_beacon_time); 1315 ctxt_ap->beacon_tsf = 0; /* unused */ 1316 1317 /* TODO: Assume that the beacon id == mac context id */ 1318 ctxt_ap->beacon_template = cpu_to_le32(mvmvif->id); 1319 } 1320 1321 static int iwl_mvm_mac_ctxt_cmd_ap(struct iwl_mvm *mvm, 1322 struct ieee80211_vif *vif, 1323 u32 action) 1324 { 1325 struct iwl_mac_ctx_cmd cmd = {}; 1326 1327 WARN_ON(vif->type != NL80211_IFTYPE_AP || vif->p2p); 1328 1329 /* Fill the common data for all mac context types */ 1330 iwl_mvm_mac_ctxt_cmd_common(mvm, vif, &cmd, NULL, action); 1331 1332 /* Fill the data specific for ap mode */ 1333 iwl_mvm_mac_ctxt_cmd_fill_ap(mvm, vif, &cmd, &cmd.ap, 1334 action == FW_CTXT_ACTION_ADD); 1335 1336 return iwl_mvm_mac_ctxt_send_cmd(mvm, &cmd); 1337 } 1338 1339 static int iwl_mvm_mac_ctxt_cmd_go(struct iwl_mvm *mvm, 1340 struct ieee80211_vif *vif, 1341 u32 action) 1342 { 1343 struct iwl_mac_ctx_cmd cmd = {}; 1344 struct ieee80211_p2p_noa_attr *noa = &vif->bss_conf.p2p_noa_attr; 1345 1346 WARN_ON(vif->type != NL80211_IFTYPE_AP || !vif->p2p); 1347 1348 /* Fill the common data for all mac context types */ 1349 iwl_mvm_mac_ctxt_cmd_common(mvm, vif, &cmd, NULL, action); 1350 1351 /* Fill the data specific for GO mode */ 1352 iwl_mvm_mac_ctxt_cmd_fill_ap(mvm, vif, &cmd, &cmd.go.ap, 1353 action == FW_CTXT_ACTION_ADD); 1354 1355 cmd.go.ctwin = cpu_to_le32(noa->oppps_ctwindow & 1356 IEEE80211_P2P_OPPPS_CTWINDOW_MASK); 1357 cmd.go.opp_ps_enabled = 1358 cpu_to_le32(!!(noa->oppps_ctwindow & 1359 IEEE80211_P2P_OPPPS_ENABLE_BIT)); 1360 1361 return iwl_mvm_mac_ctxt_send_cmd(mvm, &cmd); 1362 } 1363 1364 static int iwl_mvm_mac_ctx_send(struct iwl_mvm *mvm, struct ieee80211_vif *vif, 1365 u32 action, bool force_assoc_off, 1366 const u8 *bssid_override) 1367 { 1368 switch (vif->type) { 1369 case NL80211_IFTYPE_STATION: 1370 return iwl_mvm_mac_ctxt_cmd_sta(mvm, vif, action, 1371 force_assoc_off, 1372 bssid_override); 1373 case NL80211_IFTYPE_AP: 1374 if (!vif->p2p) 1375 return iwl_mvm_mac_ctxt_cmd_ap(mvm, vif, action); 1376 else 1377 return iwl_mvm_mac_ctxt_cmd_go(mvm, vif, action); 1378 case NL80211_IFTYPE_MONITOR: 1379 return iwl_mvm_mac_ctxt_cmd_listener(mvm, vif, action); 1380 case NL80211_IFTYPE_P2P_DEVICE: 1381 return iwl_mvm_mac_ctxt_cmd_p2p_device(mvm, vif, action); 1382 case NL80211_IFTYPE_ADHOC: 1383 return iwl_mvm_mac_ctxt_cmd_ibss(mvm, vif, action); 1384 default: 1385 break; 1386 } 1387 1388 return -EOPNOTSUPP; 1389 } 1390 1391 int iwl_mvm_mac_ctxt_add(struct iwl_mvm *mvm, struct ieee80211_vif *vif) 1392 { 1393 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 1394 int ret; 1395 1396 if (WARN_ONCE(mvmvif->uploaded, "Adding active MAC %pM/%d\n", 1397 vif->addr, ieee80211_vif_type_p2p(vif))) 1398 return -EIO; 1399 1400 ret = iwl_mvm_mac_ctx_send(mvm, vif, FW_CTXT_ACTION_ADD, 1401 true, NULL); 1402 if (ret) 1403 return ret; 1404 1405 /* will only do anything at resume from D3 time */ 1406 iwl_mvm_set_last_nonqos_seq(mvm, vif); 1407 1408 mvmvif->uploaded = true; 1409 return 0; 1410 } 1411 1412 int iwl_mvm_mac_ctxt_changed(struct iwl_mvm *mvm, struct ieee80211_vif *vif, 1413 bool force_assoc_off, const u8 *bssid_override) 1414 { 1415 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 1416 1417 if (WARN_ONCE(!mvmvif->uploaded, "Changing inactive MAC %pM/%d\n", 1418 vif->addr, ieee80211_vif_type_p2p(vif))) 1419 return -EIO; 1420 1421 return iwl_mvm_mac_ctx_send(mvm, vif, FW_CTXT_ACTION_MODIFY, 1422 force_assoc_off, bssid_override); 1423 } 1424 1425 int iwl_mvm_mac_ctxt_remove(struct iwl_mvm *mvm, struct ieee80211_vif *vif) 1426 { 1427 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 1428 struct iwl_mac_ctx_cmd cmd; 1429 int ret; 1430 1431 if (WARN_ONCE(!mvmvif->uploaded, "Removing inactive MAC %pM/%d\n", 1432 vif->addr, ieee80211_vif_type_p2p(vif))) 1433 return -EIO; 1434 1435 memset(&cmd, 0, sizeof(cmd)); 1436 1437 cmd.id_and_color = cpu_to_le32(FW_CMD_ID_AND_COLOR(mvmvif->id, 1438 mvmvif->color)); 1439 cmd.action = cpu_to_le32(FW_CTXT_ACTION_REMOVE); 1440 1441 ret = iwl_mvm_mac_ctxt_send_cmd(mvm, &cmd); 1442 if (ret) 1443 return ret; 1444 1445 mvmvif->uploaded = false; 1446 1447 if (vif->type == NL80211_IFTYPE_MONITOR) { 1448 __clear_bit(IEEE80211_HW_RX_INCLUDES_FCS, mvm->hw->flags); 1449 iwl_mvm_dealloc_snif_sta(mvm); 1450 } 1451 1452 return 0; 1453 } 1454 1455 static void iwl_mvm_csa_count_down(struct iwl_mvm *mvm, 1456 struct ieee80211_vif *csa_vif, u32 gp2, 1457 bool tx_success) 1458 { 1459 struct iwl_mvm_vif *mvmvif = 1460 iwl_mvm_vif_from_mac80211(csa_vif); 1461 1462 /* Don't start to countdown from a failed beacon */ 1463 if (!tx_success && !mvmvif->csa_countdown) 1464 return; 1465 1466 mvmvif->csa_countdown = true; 1467 1468 if (!ieee80211_beacon_cntdwn_is_complete(csa_vif, 0)) { 1469 int c = ieee80211_beacon_update_cntdwn(csa_vif, 0); 1470 1471 iwl_mvm_mac_ctxt_beacon_changed(mvm, csa_vif, 1472 &csa_vif->bss_conf); 1473 if (csa_vif->p2p && 1474 !iwl_mvm_te_scheduled(&mvmvif->time_event_data) && gp2 && 1475 tx_success) { 1476 u32 rel_time = (c + 1) * 1477 csa_vif->bss_conf.beacon_int - 1478 IWL_MVM_CHANNEL_SWITCH_TIME_GO; 1479 u32 apply_time = gp2 + rel_time * 1024; 1480 1481 iwl_mvm_schedule_csa_period(mvm, csa_vif, 1482 IWL_MVM_CHANNEL_SWITCH_TIME_GO - 1483 IWL_MVM_CHANNEL_SWITCH_MARGIN, 1484 apply_time); 1485 } 1486 } else if (!iwl_mvm_te_scheduled(&mvmvif->time_event_data)) { 1487 /* we don't have CSA NoA scheduled yet, switch now */ 1488 ieee80211_csa_finish(csa_vif, 0); 1489 RCU_INIT_POINTER(mvm->csa_vif, NULL); 1490 } 1491 } 1492 1493 void iwl_mvm_rx_beacon_notif(struct iwl_mvm *mvm, 1494 struct iwl_rx_cmd_buffer *rxb) 1495 { 1496 struct iwl_rx_packet *pkt = rxb_addr(rxb); 1497 unsigned int pkt_len = iwl_rx_packet_payload_len(pkt); 1498 struct iwl_extended_beacon_notif *beacon = (void *)pkt->data; 1499 struct iwl_extended_beacon_notif_v5 *beacon_v5 = (void *)pkt->data; 1500 struct ieee80211_vif *csa_vif; 1501 struct ieee80211_vif *tx_blocked_vif; 1502 struct agg_tx_status *agg_status; 1503 u16 status; 1504 1505 lockdep_assert_held(&mvm->mutex); 1506 1507 mvm->ap_last_beacon_gp2 = le32_to_cpu(beacon->gp2); 1508 1509 if (!iwl_mvm_is_short_beacon_notif_supported(mvm)) { 1510 struct iwl_tx_resp *beacon_notify_hdr = 1511 &beacon_v5->beacon_notify_hdr; 1512 1513 if (unlikely(pkt_len < sizeof(*beacon_v5))) 1514 return; 1515 1516 mvm->ibss_manager = beacon_v5->ibss_mgr_status != 0; 1517 agg_status = iwl_mvm_get_agg_status(mvm, beacon_notify_hdr); 1518 status = le16_to_cpu(agg_status->status) & TX_STATUS_MSK; 1519 IWL_DEBUG_RX(mvm, 1520 "beacon status %#x retries:%d tsf:0x%016llX gp2:0x%X rate:%d\n", 1521 status, beacon_notify_hdr->failure_frame, 1522 le64_to_cpu(beacon->tsf), 1523 mvm->ap_last_beacon_gp2, 1524 le32_to_cpu(beacon_notify_hdr->initial_rate)); 1525 } else { 1526 if (unlikely(pkt_len < sizeof(*beacon))) 1527 return; 1528 1529 mvm->ibss_manager = beacon->ibss_mgr_status != 0; 1530 status = le32_to_cpu(beacon->status) & TX_STATUS_MSK; 1531 IWL_DEBUG_RX(mvm, 1532 "beacon status %#x tsf:0x%016llX gp2:0x%X\n", 1533 status, le64_to_cpu(beacon->tsf), 1534 mvm->ap_last_beacon_gp2); 1535 } 1536 1537 csa_vif = rcu_dereference_protected(mvm->csa_vif, 1538 lockdep_is_held(&mvm->mutex)); 1539 if (unlikely(csa_vif && csa_vif->bss_conf.csa_active)) 1540 iwl_mvm_csa_count_down(mvm, csa_vif, mvm->ap_last_beacon_gp2, 1541 (status == TX_STATUS_SUCCESS)); 1542 1543 tx_blocked_vif = rcu_dereference_protected(mvm->csa_tx_blocked_vif, 1544 lockdep_is_held(&mvm->mutex)); 1545 if (unlikely(tx_blocked_vif)) { 1546 struct iwl_mvm_vif *mvmvif = 1547 iwl_mvm_vif_from_mac80211(tx_blocked_vif); 1548 1549 /* 1550 * The channel switch is started and we have blocked the 1551 * stations. If this is the first beacon (the timeout wasn't 1552 * set), set the unblock timeout, otherwise countdown 1553 */ 1554 if (!mvm->csa_tx_block_bcn_timeout) 1555 mvm->csa_tx_block_bcn_timeout = 1556 IWL_MVM_CS_UNBLOCK_TX_TIMEOUT; 1557 else 1558 mvm->csa_tx_block_bcn_timeout--; 1559 1560 /* Check if the timeout is expired, and unblock tx */ 1561 if (mvm->csa_tx_block_bcn_timeout == 0) { 1562 iwl_mvm_modify_all_sta_disable_tx(mvm, mvmvif, false); 1563 RCU_INIT_POINTER(mvm->csa_tx_blocked_vif, NULL); 1564 } 1565 } 1566 } 1567 1568 static void 1569 iwl_mvm_handle_missed_beacons_notif(struct iwl_mvm *mvm, 1570 const struct iwl_missed_beacons_notif *mb, 1571 struct iwl_rx_packet *pkt) 1572 { 1573 struct iwl_fw_dbg_trigger_missed_bcon *bcon_trig; 1574 struct iwl_fw_dbg_trigger_tlv *trigger; 1575 u32 stop_trig_missed_bcon, stop_trig_missed_bcon_since_rx; 1576 u32 rx_missed_bcon, rx_missed_bcon_since_rx; 1577 struct ieee80211_vif *vif; 1578 /* Id can be mac/link id depending on the notification version */ 1579 u32 id = le32_to_cpu(mb->link_id); 1580 union iwl_dbg_tlv_tp_data tp_data = { .fw_pkt = pkt }; 1581 u32 mac_type; 1582 int link_id = -1; 1583 u8 notif_ver = iwl_fw_lookup_notif_ver(mvm->fw, LEGACY_GROUP, 1584 MISSED_BEACONS_NOTIFICATION, 1585 0); 1586 u8 new_notif_ver = iwl_fw_lookup_notif_ver(mvm->fw, MAC_CONF_GROUP, 1587 MISSED_BEACONS_NOTIF, 0); 1588 struct ieee80211_bss_conf *bss_conf; 1589 1590 /* If the firmware uses the new notification (from MAC_CONF_GROUP), 1591 * refer to that notification's version. 1592 * Note that the new notification from MAC_CONF_GROUP starts from 1593 * version 5. 1594 */ 1595 if (new_notif_ver) 1596 notif_ver = new_notif_ver; 1597 1598 /* before version four the ID in the notification refers to mac ID */ 1599 if (notif_ver < 4) { 1600 vif = iwl_mvm_rcu_dereference_vif_id(mvm, id, false); 1601 bss_conf = &vif->bss_conf; 1602 } else { 1603 bss_conf = iwl_mvm_rcu_fw_link_id_to_link_conf(mvm, id, false); 1604 1605 if (!bss_conf) 1606 return; 1607 1608 vif = bss_conf->vif; 1609 link_id = bss_conf->link_id; 1610 } 1611 1612 IWL_DEBUG_INFO(mvm, 1613 "missed bcn %s_id=%u, consecutive=%u (%u)\n", 1614 notif_ver < 4 ? "mac" : "link", 1615 id, 1616 le32_to_cpu(mb->consec_missed_beacons), 1617 le32_to_cpu(mb->consec_missed_beacons_since_last_rx)); 1618 1619 if (!vif) 1620 return; 1621 1622 mac_type = iwl_mvm_get_mac_type(vif); 1623 1624 IWL_DEBUG_INFO(mvm, "missed beacon mac_type=%u,\n", mac_type); 1625 1626 mvm->trans->dbg.dump_file_name_ext_valid = true; 1627 snprintf(mvm->trans->dbg.dump_file_name_ext, IWL_FW_INI_MAX_NAME, 1628 "MacId_%d_MacType_%d", id, mac_type); 1629 1630 rx_missed_bcon = le32_to_cpu(mb->consec_missed_beacons); 1631 rx_missed_bcon_since_rx = 1632 le32_to_cpu(mb->consec_missed_beacons_since_last_rx); 1633 /* 1634 * TODO: the threshold should be adjusted based on latency conditions, 1635 * and/or in case of a CS flow on one of the other AP vifs. 1636 */ 1637 if (rx_missed_bcon >= IWL_MVM_MISSED_BEACONS_THRESHOLD_LONG) { 1638 if (rx_missed_bcon_since_rx >= IWL_MVM_MISSED_BEACONS_SINCE_RX_THOLD) { 1639 iwl_mvm_connection_loss(mvm, vif, "missed beacons"); 1640 } else { 1641 IWL_WARN(mvm, 1642 "missed beacons exceeds threshold, but receiving data. Stay connected, Expect bugs.\n"); 1643 IWL_WARN(mvm, 1644 "missed_beacons:%d, missed_beacons_since_rx:%d\n", 1645 rx_missed_bcon, rx_missed_bcon_since_rx); 1646 } 1647 } else if (link_id >= 0 && hweight16(vif->active_links) > 1) { 1648 u32 bss_param_ch_cnt_link_id = 1649 bss_conf->bss_param_ch_cnt_link_id; 1650 u32 scnd_lnk_bcn_lost = 0; 1651 1652 if (notif_ver >= 5 && 1653 !IWL_FW_CHECK(mvm, 1654 le32_to_cpu(mb->other_link_id) == IWL_MVM_FW_LINK_ID_INVALID, 1655 "No data for other link id but we are in EMLSR active_links: 0x%x\n", 1656 vif->active_links)) 1657 scnd_lnk_bcn_lost = 1658 le32_to_cpu(mb->consec_missed_beacons_other_link); 1659 1660 /* Exit EMLSR if we lost more than 1661 * IWL_MVM_MISSED_BEACONS_EXIT_ESR_THRESH beacons on boths links 1662 * OR more than IWL_MVM_BCN_LOSS_EXIT_ESR_THRESH on any link. 1663 * OR more than IWL_MVM_BCN_LOSS_EXIT_ESR_THRESH_BSS_PARAM_CHANGED 1664 * and the link's bss_param_ch_count has changed. 1665 */ 1666 if ((rx_missed_bcon >= IWL_MVM_BCN_LOSS_EXIT_ESR_THRESH_2_LINKS && 1667 scnd_lnk_bcn_lost >= IWL_MVM_BCN_LOSS_EXIT_ESR_THRESH_2_LINKS) || 1668 rx_missed_bcon >= IWL_MVM_BCN_LOSS_EXIT_ESR_THRESH || 1669 (bss_param_ch_cnt_link_id != link_id && 1670 rx_missed_bcon >= IWL_MVM_BCN_LOSS_EXIT_ESR_THRESH_BSS_PARAM_CHANGED)) 1671 iwl_mvm_exit_esr(mvm, vif, 1672 IWL_MVM_ESR_EXIT_MISSED_BEACON, 1673 iwl_mvm_get_primary_link(vif)); 1674 } else if (rx_missed_bcon_since_rx > IWL_MVM_MISSED_BEACONS_THRESHOLD) { 1675 if (!iwl_mvm_has_new_tx_api(mvm)) 1676 ieee80211_beacon_loss(vif); 1677 else 1678 ieee80211_cqm_beacon_loss_notify(vif, GFP_ATOMIC); 1679 1680 /* try to switch links, no-op if we don't have MLO */ 1681 iwl_mvm_int_mlo_scan(mvm, vif); 1682 } 1683 1684 iwl_dbg_tlv_time_point(&mvm->fwrt, 1685 IWL_FW_INI_TIME_POINT_MISSED_BEACONS, &tp_data); 1686 1687 trigger = iwl_fw_dbg_trigger_on(&mvm->fwrt, ieee80211_vif_to_wdev(vif), 1688 FW_DBG_TRIGGER_MISSED_BEACONS); 1689 if (!trigger) 1690 return; 1691 1692 bcon_trig = (void *)trigger->data; 1693 stop_trig_missed_bcon = le32_to_cpu(bcon_trig->stop_consec_missed_bcon); 1694 stop_trig_missed_bcon_since_rx = 1695 le32_to_cpu(bcon_trig->stop_consec_missed_bcon_since_rx); 1696 1697 /* TODO: implement start trigger */ 1698 1699 if (rx_missed_bcon_since_rx >= stop_trig_missed_bcon_since_rx || 1700 rx_missed_bcon >= stop_trig_missed_bcon) 1701 iwl_fw_dbg_collect_trig(&mvm->fwrt, trigger, NULL); 1702 } 1703 1704 void iwl_mvm_rx_missed_beacons_notif(struct iwl_mvm *mvm, 1705 struct iwl_rx_cmd_buffer *rxb) 1706 { 1707 struct iwl_rx_packet *pkt = rxb_addr(rxb); 1708 1709 iwl_mvm_handle_missed_beacons_notif(mvm, (const void *)pkt->data, pkt); 1710 } 1711 1712 void iwl_mvm_rx_missed_beacons_notif_legacy(struct iwl_mvm *mvm, 1713 struct iwl_rx_cmd_buffer *rxb) 1714 { 1715 struct iwl_rx_packet *pkt = rxb_addr(rxb); 1716 const struct iwl_missed_beacons_notif_v4 *mb_v4 = 1717 (const void *)pkt->data; 1718 struct iwl_missed_beacons_notif mb = { 1719 .link_id = mb_v4->link_id, 1720 .consec_missed_beacons = mb_v4->consec_missed_beacons, 1721 .consec_missed_beacons_since_last_rx = 1722 mb_v4->consec_missed_beacons_since_last_rx, 1723 .other_link_id = cpu_to_le32(IWL_MVM_FW_LINK_ID_INVALID), 1724 }; 1725 1726 iwl_mvm_handle_missed_beacons_notif(mvm, &mb, pkt); 1727 } 1728 1729 void iwl_mvm_rx_stored_beacon_notif(struct iwl_mvm *mvm, 1730 struct iwl_rx_cmd_buffer *rxb) 1731 { 1732 struct iwl_rx_packet *pkt = rxb_addr(rxb); 1733 unsigned int pkt_len = iwl_rx_packet_payload_len(pkt); 1734 struct iwl_stored_beacon_notif_common *sb = (void *)pkt->data; 1735 struct ieee80211_rx_status rx_status; 1736 struct sk_buff *skb; 1737 u8 *data; 1738 u32 size = le32_to_cpu(sb->byte_count); 1739 int ver = iwl_fw_lookup_cmd_ver(mvm->fw, 1740 WIDE_ID(PROT_OFFLOAD_GROUP, STORED_BEACON_NTF), 1741 0); 1742 1743 if (size == 0) 1744 return; 1745 1746 /* handle per-version differences */ 1747 if (ver <= 2) { 1748 struct iwl_stored_beacon_notif_v2 *sb_v2 = (void *)pkt->data; 1749 1750 if (pkt_len < struct_size(sb_v2, data, size)) 1751 return; 1752 1753 data = sb_v2->data; 1754 } else { 1755 struct iwl_stored_beacon_notif *sb_v3 = (void *)pkt->data; 1756 1757 if (pkt_len < struct_size(sb_v3, data, size)) 1758 return; 1759 1760 data = sb_v3->data; 1761 } 1762 1763 skb = alloc_skb(size, GFP_ATOMIC); 1764 if (!skb) { 1765 IWL_ERR(mvm, "alloc_skb failed\n"); 1766 return; 1767 } 1768 1769 /* update rx_status according to the notification's metadata */ 1770 memset(&rx_status, 0, sizeof(rx_status)); 1771 rx_status.mactime = le64_to_cpu(sb->tsf); 1772 /* TSF as indicated by the firmware is at INA time */ 1773 rx_status.flag |= RX_FLAG_MACTIME_PLCP_START; 1774 rx_status.device_timestamp = le32_to_cpu(sb->system_time); 1775 rx_status.band = 1776 (sb->band & cpu_to_le16(RX_RES_PHY_FLAGS_BAND_24)) ? 1777 NL80211_BAND_2GHZ : NL80211_BAND_5GHZ; 1778 rx_status.freq = 1779 ieee80211_channel_to_frequency(le16_to_cpu(sb->channel), 1780 rx_status.band); 1781 1782 /* copy the data */ 1783 skb_put_data(skb, data, size); 1784 memcpy(IEEE80211_SKB_RXCB(skb), &rx_status, sizeof(rx_status)); 1785 1786 /* pass it as regular rx to mac80211 */ 1787 ieee80211_rx_napi(mvm->hw, NULL, skb, NULL); 1788 } 1789 1790 void iwl_mvm_probe_resp_data_notif(struct iwl_mvm *mvm, 1791 struct iwl_rx_cmd_buffer *rxb) 1792 { 1793 struct iwl_rx_packet *pkt = rxb_addr(rxb); 1794 struct iwl_probe_resp_data_notif *notif = (void *)pkt->data; 1795 struct iwl_probe_resp_data *old_data, *new_data; 1796 u32 id = le32_to_cpu(notif->mac_id); 1797 struct ieee80211_vif *vif; 1798 struct iwl_mvm_vif *mvmvif; 1799 1800 IWL_DEBUG_INFO(mvm, "Probe response data notif: noa %d, csa %d\n", 1801 notif->noa_active, notif->csa_counter); 1802 1803 vif = iwl_mvm_rcu_dereference_vif_id(mvm, id, false); 1804 if (!vif) 1805 return; 1806 1807 mvmvif = iwl_mvm_vif_from_mac80211(vif); 1808 1809 new_data = kzalloc(sizeof(*new_data), GFP_KERNEL); 1810 if (!new_data) 1811 return; 1812 1813 memcpy(&new_data->notif, notif, sizeof(new_data->notif)); 1814 1815 /* noa_attr contains 1 reserved byte, need to substruct it */ 1816 new_data->noa_len = sizeof(struct ieee80211_vendor_ie) + 1817 sizeof(new_data->notif.noa_attr) - 1; 1818 1819 /* 1820 * If it's a one time NoA, only one descriptor is needed, 1821 * adjust the length according to len_low. 1822 */ 1823 if (new_data->notif.noa_attr.len_low == 1824 sizeof(struct ieee80211_p2p_noa_desc) + 2) 1825 new_data->noa_len -= sizeof(struct ieee80211_p2p_noa_desc); 1826 1827 old_data = rcu_dereference_protected(mvmvif->deflink.probe_resp_data, 1828 lockdep_is_held(&mvmvif->mvm->mutex)); 1829 rcu_assign_pointer(mvmvif->deflink.probe_resp_data, new_data); 1830 1831 if (old_data) 1832 kfree_rcu(old_data, rcu_head); 1833 1834 if (notif->csa_counter != IWL_PROBE_RESP_DATA_NO_CSA && 1835 notif->csa_counter >= 1) 1836 ieee80211_beacon_set_cntdwn(vif, notif->csa_counter); 1837 } 1838 1839 void iwl_mvm_channel_switch_start_notif(struct iwl_mvm *mvm, 1840 struct iwl_rx_cmd_buffer *rxb) 1841 { 1842 struct iwl_rx_packet *pkt = rxb_addr(rxb); 1843 struct ieee80211_vif *csa_vif, *vif; 1844 struct iwl_mvm_vif *mvmvif, *csa_mvmvif; 1845 u32 id_n_color, csa_id; 1846 /* save mac_id or link_id to use later to cancel csa if needed */ 1847 u32 id; 1848 u32 mac_link_id = 0; 1849 u8 notif_ver = iwl_fw_lookup_notif_ver(mvm->fw, MAC_CONF_GROUP, 1850 CHANNEL_SWITCH_START_NOTIF, 0); 1851 bool csa_active; 1852 1853 rcu_read_lock(); 1854 1855 if (notif_ver < 3) { 1856 struct iwl_channel_switch_start_notif_v1 *notif = (void *)pkt->data; 1857 u32 mac_id; 1858 1859 id_n_color = le32_to_cpu(notif->id_and_color); 1860 mac_id = id_n_color & FW_CTXT_ID_MSK; 1861 1862 vif = iwl_mvm_rcu_dereference_vif_id(mvm, mac_id, true); 1863 if (!vif) 1864 goto out_unlock; 1865 1866 id = mac_id; 1867 csa_active = vif->bss_conf.csa_active; 1868 } else { 1869 struct iwl_channel_switch_start_notif *notif = (void *)pkt->data; 1870 u32 link_id = le32_to_cpu(notif->link_id); 1871 struct ieee80211_bss_conf *bss_conf = 1872 iwl_mvm_rcu_fw_link_id_to_link_conf(mvm, link_id, true); 1873 1874 if (!bss_conf) 1875 goto out_unlock; 1876 1877 id = link_id; 1878 mac_link_id = bss_conf->link_id; 1879 vif = bss_conf->vif; 1880 csa_active = bss_conf->csa_active; 1881 } 1882 1883 mvmvif = iwl_mvm_vif_from_mac80211(vif); 1884 if (notif_ver >= 3) 1885 id_n_color = FW_CMD_ID_AND_COLOR(mvmvif->id, mvmvif->color); 1886 1887 switch (vif->type) { 1888 case NL80211_IFTYPE_AP: 1889 csa_vif = rcu_dereference(mvm->csa_vif); 1890 if (WARN_ON(!csa_vif || !csa_vif->bss_conf.csa_active || 1891 csa_vif != vif)) 1892 goto out_unlock; 1893 1894 csa_mvmvif = iwl_mvm_vif_from_mac80211(csa_vif); 1895 csa_id = FW_CMD_ID_AND_COLOR(csa_mvmvif->id, csa_mvmvif->color); 1896 if (WARN(csa_id != id_n_color, 1897 "channel switch noa notification on unexpected vif (csa_vif=%d, notif=%d)", 1898 csa_id, id_n_color)) 1899 goto out_unlock; 1900 1901 IWL_DEBUG_INFO(mvm, "Channel Switch Started Notification\n"); 1902 1903 schedule_delayed_work(&mvm->cs_tx_unblock_dwork, 1904 msecs_to_jiffies(IWL_MVM_CS_UNBLOCK_TX_TIMEOUT * 1905 csa_vif->bss_conf.beacon_int)); 1906 1907 ieee80211_csa_finish(csa_vif, 0); 1908 1909 rcu_read_unlock(); 1910 1911 RCU_INIT_POINTER(mvm->csa_vif, NULL); 1912 return; 1913 case NL80211_IFTYPE_STATION: 1914 /* 1915 * if we don't know about an ongoing channel switch, 1916 * make sure FW cancels it 1917 */ 1918 if (iwl_fw_lookup_notif_ver(mvm->fw, MAC_CONF_GROUP, 1919 CHANNEL_SWITCH_ERROR_NOTIF, 1920 0) && !csa_active) { 1921 IWL_DEBUG_INFO(mvm, "Channel Switch was canceled\n"); 1922 iwl_mvm_cancel_channel_switch(mvm, vif, id); 1923 break; 1924 } 1925 1926 iwl_mvm_csa_client_absent(mvm, vif); 1927 cancel_delayed_work(&mvmvif->csa_work); 1928 ieee80211_chswitch_done(vif, true, mac_link_id); 1929 break; 1930 default: 1931 /* should never happen */ 1932 WARN_ON_ONCE(1); 1933 break; 1934 } 1935 out_unlock: 1936 rcu_read_unlock(); 1937 } 1938 1939 void iwl_mvm_channel_switch_error_notif(struct iwl_mvm *mvm, 1940 struct iwl_rx_cmd_buffer *rxb) 1941 { 1942 struct iwl_rx_packet *pkt = rxb_addr(rxb); 1943 struct iwl_channel_switch_error_notif *notif = (void *)pkt->data; 1944 struct ieee80211_vif *vif; 1945 u32 id = le32_to_cpu(notif->link_id); 1946 u32 csa_err_mask = le32_to_cpu(notif->csa_err_mask); 1947 1948 rcu_read_lock(); 1949 vif = iwl_mvm_rcu_dereference_vif_id(mvm, id, true); 1950 if (!vif) { 1951 rcu_read_unlock(); 1952 return; 1953 } 1954 1955 IWL_DEBUG_INFO(mvm, "FW reports CSA error: id=%u, csa_err_mask=%u\n", 1956 id, csa_err_mask); 1957 if (csa_err_mask & (CS_ERR_COUNT_ERROR | 1958 CS_ERR_LONG_DELAY_AFTER_CS | 1959 CS_ERR_TX_BLOCK_TIMER_EXPIRED)) 1960 ieee80211_channel_switch_disconnect(vif); 1961 rcu_read_unlock(); 1962 } 1963 1964 void iwl_mvm_rx_missed_vap_notif(struct iwl_mvm *mvm, 1965 struct iwl_rx_cmd_buffer *rxb) 1966 { 1967 struct iwl_rx_packet *pkt = rxb_addr(rxb); 1968 struct iwl_missed_vap_notif *mb = (void *)pkt->data; 1969 struct ieee80211_vif *vif; 1970 u32 id = le32_to_cpu(mb->mac_id); 1971 1972 IWL_DEBUG_INFO(mvm, 1973 "missed_vap notify mac_id=%u, num_beacon_intervals_elapsed=%u, profile_periodicity=%u\n", 1974 le32_to_cpu(mb->mac_id), 1975 mb->num_beacon_intervals_elapsed, 1976 mb->profile_periodicity); 1977 1978 rcu_read_lock(); 1979 1980 vif = iwl_mvm_rcu_dereference_vif_id(mvm, id, true); 1981 if (vif) 1982 iwl_mvm_connection_loss(mvm, vif, "missed vap beacon"); 1983 1984 rcu_read_unlock(); 1985 } 1986