1996 lines · c
1// SPDX-License-Identifier: GPL-2.0 OR BSD-3-Clause2/*3 * Copyright (C) 2012-2014, 2018-2024 Intel Corporation4 * Copyright (C) 2013-2014 Intel Mobile Communications GmbH5 * Copyright (C) 2015-2017 Intel Deutschland GmbH6 */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 34const u8 iwl_mvm_ac_to_bz_tx_fifo[] = {35 IWL_BZ_EDCA_TX_FIFO_VO,36 IWL_BZ_EDCA_TX_FIFO_VI,37 IWL_BZ_EDCA_TX_FIFO_BE,38 IWL_BZ_EDCA_TX_FIFO_BK,39 IWL_BZ_TRIG_TX_FIFO_VO,40 IWL_BZ_TRIG_TX_FIFO_VI,41 IWL_BZ_TRIG_TX_FIFO_BE,42 IWL_BZ_TRIG_TX_FIFO_BK,43};44 45struct iwl_mvm_mac_iface_iterator_data {46 struct iwl_mvm *mvm;47 struct ieee80211_vif *vif;48 unsigned long available_mac_ids[BITS_TO_LONGS(NUM_MAC_INDEX_DRIVER)];49 unsigned long available_tsf_ids[BITS_TO_LONGS(NUM_TSF_IDS)];50 enum iwl_tsf_id preferred_tsf;51 bool found_vif;52};53 54static void iwl_mvm_mac_tsf_id_iter(void *_data, u8 *mac,55 struct ieee80211_vif *vif)56{57 struct iwl_mvm_mac_iface_iterator_data *data = _data;58 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);59 u16 min_bi;60 61 /* Skip the interface for which we are trying to assign a tsf_id */62 if (vif == data->vif)63 return;64 65 /*66 * The TSF is a hardware/firmware resource, there are 4 and67 * the driver should assign and free them as needed. However,68 * there are cases where 2 MACs should share the same TSF ID69 * for the purpose of clock sync, an optimization to avoid70 * clock drift causing overlapping TBTTs/DTIMs for a GO and71 * client in the system.72 *73 * The firmware will decide according to the MAC type which74 * will be the leader and follower. Clients that need to sync75 * with a remote station will be the leader, and an AP or GO76 * will be the follower.77 *78 * Depending on the new interface type it can be following79 * or become the leader of an existing interface.80 */81 switch (data->vif->type) {82 case NL80211_IFTYPE_STATION:83 /*84 * The new interface is a client, so if the one we're iterating85 * is an AP, and the beacon interval of the AP is a multiple or86 * divisor of the beacon interval of the client, the same TSF87 * should be used to avoid drift between the new client and88 * existing AP. The existing AP will get drift updates from the89 * new client context in this case.90 */91 if (vif->type != NL80211_IFTYPE_AP ||92 data->preferred_tsf != NUM_TSF_IDS ||93 !test_bit(mvmvif->tsf_id, data->available_tsf_ids))94 break;95 96 min_bi = min(data->vif->bss_conf.beacon_int,97 vif->bss_conf.beacon_int);98 99 if (!min_bi)100 break;101 102 if ((data->vif->bss_conf.beacon_int -103 vif->bss_conf.beacon_int) % min_bi == 0) {104 data->preferred_tsf = mvmvif->tsf_id;105 return;106 }107 break;108 109 case NL80211_IFTYPE_AP:110 /*111 * The new interface is AP/GO, so if its beacon interval is a112 * multiple or a divisor of the beacon interval of an existing113 * interface, it should get drift updates from an existing114 * client or use the same TSF as an existing GO. There's no115 * drift between TSFs internally but if they used different116 * TSFs then a new client MAC could update one of them and117 * cause drift that way.118 */119 if ((vif->type != NL80211_IFTYPE_AP &&120 vif->type != NL80211_IFTYPE_STATION) ||121 data->preferred_tsf != NUM_TSF_IDS ||122 !test_bit(mvmvif->tsf_id, data->available_tsf_ids))123 break;124 125 min_bi = min(data->vif->bss_conf.beacon_int,126 vif->bss_conf.beacon_int);127 128 if (!min_bi)129 break;130 131 if ((data->vif->bss_conf.beacon_int -132 vif->bss_conf.beacon_int) % min_bi == 0) {133 data->preferred_tsf = mvmvif->tsf_id;134 return;135 }136 break;137 default:138 /*139 * For all other interface types there's no need to140 * take drift into account. Either they're exclusive141 * like IBSS and monitor, or we don't care much about142 * their TSF (like P2P Device), but we won't be able143 * to share the TSF resource.144 */145 break;146 }147 148 /*149 * Unless we exited above, we can't share the TSF resource150 * that the virtual interface we're iterating over is using151 * with the new one, so clear the available bit and if this152 * was the preferred one, reset that as well.153 */154 __clear_bit(mvmvif->tsf_id, data->available_tsf_ids);155 156 if (data->preferred_tsf == mvmvif->tsf_id)157 data->preferred_tsf = NUM_TSF_IDS;158}159 160static void iwl_mvm_mac_iface_iterator(void *_data, u8 *mac,161 struct ieee80211_vif *vif)162{163 struct iwl_mvm_mac_iface_iterator_data *data = _data;164 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);165 166 /* Iterator may already find the interface being added -- skip it */167 if (vif == data->vif) {168 data->found_vif = true;169 return;170 }171 172 /* Mark MAC IDs as used by clearing the available bit, and173 * (below) mark TSFs as used if their existing use is not174 * compatible with the new interface type.175 * No locking or atomic bit operations are needed since the176 * data is on the stack of the caller function.177 */178 __clear_bit(mvmvif->id, data->available_mac_ids);179 180 /* find a suitable tsf_id */181 iwl_mvm_mac_tsf_id_iter(_data, mac, vif);182}183 184void iwl_mvm_mac_ctxt_recalc_tsf_id(struct iwl_mvm *mvm,185 struct ieee80211_vif *vif)186{187 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);188 struct iwl_mvm_mac_iface_iterator_data data = {189 .mvm = mvm,190 .vif = vif,191 .available_tsf_ids = { (1 << NUM_TSF_IDS) - 1 },192 /* no preference yet */193 .preferred_tsf = NUM_TSF_IDS,194 };195 196 ieee80211_iterate_active_interfaces_atomic(197 mvm->hw, IEEE80211_IFACE_ITER_RESUME_ALL,198 iwl_mvm_mac_tsf_id_iter, &data);199 200 if (data.preferred_tsf != NUM_TSF_IDS)201 mvmvif->tsf_id = data.preferred_tsf;202 else if (!test_bit(mvmvif->tsf_id, data.available_tsf_ids))203 mvmvif->tsf_id = find_first_bit(data.available_tsf_ids,204 NUM_TSF_IDS);205}206 207int iwl_mvm_mac_ctxt_init(struct iwl_mvm *mvm, struct ieee80211_vif *vif)208{209 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);210 struct iwl_mvm_mac_iface_iterator_data data = {211 .mvm = mvm,212 .vif = vif,213 .available_mac_ids = { (1 << NUM_MAC_INDEX_DRIVER) - 1 },214 .available_tsf_ids = { (1 << NUM_TSF_IDS) - 1 },215 /* no preference yet */216 .preferred_tsf = NUM_TSF_IDS,217 .found_vif = false,218 };219 int ret, i;220 221 lockdep_assert_held(&mvm->mutex);222 223 /*224 * Allocate a MAC ID and a TSF for this MAC, along with the queues225 * and other resources.226 */227 228 /*229 * Before the iterator, we start with all MAC IDs and TSFs available.230 *231 * During iteration, all MAC IDs are cleared that are in use by other232 * virtual interfaces, and all TSF IDs are cleared that can't be used233 * by this new virtual interface because they're used by an interface234 * that can't share it with the new one.235 * At the same time, we check if there's a preferred TSF in the case236 * that we should share it with another interface.237 */238 239 /* MAC ID 0 should be used only for the managed/IBSS vif with non-MLO240 * FW API241 */242 if (!mvm->mld_api_is_used) {243 switch (vif->type) {244 case NL80211_IFTYPE_ADHOC:245 break;246 case NL80211_IFTYPE_STATION:247 if (!vif->p2p)248 break;249 fallthrough;250 default:251 __clear_bit(0, data.available_mac_ids);252 }253 }254 255 ieee80211_iterate_active_interfaces_atomic(256 mvm->hw, IEEE80211_IFACE_ITER_RESUME_ALL,257 iwl_mvm_mac_iface_iterator, &data);258 259 /*260 * In the case we're getting here during resume, it's similar to261 * firmware restart, and with RESUME_ALL the iterator will find262 * the vif being added already.263 * We don't want to reassign any IDs in either case since doing264 * so would probably assign different IDs (as interfaces aren't265 * necessarily added in the same order), but the old IDs were266 * preserved anyway, so skip ID assignment for both resume and267 * recovery.268 */269 if (data.found_vif)270 return 0;271 272 /* Therefore, in recovery, we can't get here */273 if (WARN_ON_ONCE(test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status)))274 return -EBUSY;275 276 mvmvif->id = find_first_bit(data.available_mac_ids,277 NUM_MAC_INDEX_DRIVER);278 if (mvmvif->id == NUM_MAC_INDEX_DRIVER) {279 IWL_ERR(mvm, "Failed to init MAC context - no free ID!\n");280 ret = -EIO;281 goto exit_fail;282 }283 284 if (data.preferred_tsf != NUM_TSF_IDS)285 mvmvif->tsf_id = data.preferred_tsf;286 else287 mvmvif->tsf_id = find_first_bit(data.available_tsf_ids,288 NUM_TSF_IDS);289 if (mvmvif->tsf_id == NUM_TSF_IDS) {290 IWL_ERR(mvm, "Failed to init MAC context - no free TSF!\n");291 ret = -EIO;292 goto exit_fail;293 }294 295 mvmvif->color = 0;296 297 INIT_LIST_HEAD(&mvmvif->time_event_data.list);298 mvmvif->time_event_data.id = TE_MAX;299 mvmvif->roc_activity = ROC_NUM_ACTIVITIES;300 301 mvmvif->deflink.bcast_sta.sta_id = IWL_MVM_INVALID_STA;302 mvmvif->deflink.mcast_sta.sta_id = IWL_MVM_INVALID_STA;303 mvmvif->deflink.ap_sta_id = IWL_MVM_INVALID_STA;304 305 /* No need to allocate data queues to P2P Device MAC and NAN.*/306 if (vif->type == NL80211_IFTYPE_P2P_DEVICE)307 return 0;308 309 /* Allocate the CAB queue for softAP and GO interfaces */310 if (vif->type == NL80211_IFTYPE_AP ||311 vif->type == NL80211_IFTYPE_ADHOC) {312 /*313 * For TVQM this will be overwritten later with the FW assigned314 * queue value (when queue is enabled).315 */316 mvmvif->deflink.cab_queue = IWL_MVM_DQA_GCAST_QUEUE;317 }318 319 for (i = 0; i < NUM_IWL_MVM_SMPS_REQ; i++)320 mvmvif->deflink.smps_requests[i] = IEEE80211_SMPS_AUTOMATIC;321 322 return 0;323 324exit_fail:325 memset(mvmvif, 0, sizeof(struct iwl_mvm_vif));326 return ret;327}328 329static void iwl_mvm_ack_rates(struct iwl_mvm *mvm,330 struct ieee80211_vif *vif,331 enum nl80211_band band,332 u8 *cck_rates, u8 *ofdm_rates)333{334 struct ieee80211_supported_band *sband;335 unsigned long basic = vif->bss_conf.basic_rates;336 int lowest_present_ofdm = 100;337 int lowest_present_cck = 100;338 u8 cck = 0;339 u8 ofdm = 0;340 int i;341 342 sband = mvm->hw->wiphy->bands[band];343 344 for_each_set_bit(i, &basic, BITS_PER_LONG) {345 int hw = sband->bitrates[i].hw_value;346 if (hw >= IWL_FIRST_OFDM_RATE) {347 ofdm |= BIT(hw - IWL_FIRST_OFDM_RATE);348 if (lowest_present_ofdm > hw)349 lowest_present_ofdm = hw;350 } else {351 BUILD_BUG_ON(IWL_FIRST_CCK_RATE != 0);352 353 cck |= BIT(hw);354 if (lowest_present_cck > hw)355 lowest_present_cck = hw;356 }357 }358 359 /*360 * Now we've got the basic rates as bitmaps in the ofdm and cck361 * variables. This isn't sufficient though, as there might not362 * be all the right rates in the bitmap. E.g. if the only basic363 * rates are 5.5 Mbps and 11 Mbps, we still need to add 1 Mbps364 * and 6 Mbps because the 802.11-2007 standard says in 9.6:365 *366 * [...] a STA responding to a received frame shall transmit367 * its Control Response frame [...] at the highest rate in the368 * BSSBasicRateSet parameter that is less than or equal to the369 * rate of the immediately previous frame in the frame exchange370 * sequence ([...]) and that is of the same modulation class371 * ([...]) as the received frame. If no rate contained in the372 * BSSBasicRateSet parameter meets these conditions, then the373 * control frame sent in response to a received frame shall be374 * transmitted at the highest mandatory rate of the PHY that is375 * less than or equal to the rate of the received frame, and376 * that is of the same modulation class as the received frame.377 *378 * As a consequence, we need to add all mandatory rates that are379 * lower than all of the basic rates to these bitmaps.380 */381 382 if (IWL_RATE_24M_INDEX < lowest_present_ofdm)383 ofdm |= IWL_RATE_BIT_MSK(24) >> IWL_FIRST_OFDM_RATE;384 if (IWL_RATE_12M_INDEX < lowest_present_ofdm)385 ofdm |= IWL_RATE_BIT_MSK(12) >> IWL_FIRST_OFDM_RATE;386 /* 6M already there or needed so always add */387 ofdm |= IWL_RATE_BIT_MSK(6) >> IWL_FIRST_OFDM_RATE;388 389 /*390 * CCK is a bit more complex with DSSS vs. HR/DSSS vs. ERP.391 * Note, however:392 * - if no CCK rates are basic, it must be ERP since there must393 * be some basic rates at all, so they're OFDM => ERP PHY394 * (or we're in 5 GHz, and the cck bitmap will never be used)395 * - if 11M is a basic rate, it must be ERP as well, so add 5.5M396 * - if 5.5M is basic, 1M and 2M are mandatory397 * - if 2M is basic, 1M is mandatory398 * - if 1M is basic, that's the only valid ACK rate.399 * As a consequence, it's not as complicated as it sounds, just add400 * any lower rates to the ACK rate bitmap.401 */402 if (IWL_RATE_11M_INDEX < lowest_present_cck)403 cck |= IWL_RATE_BIT_MSK(11) >> IWL_FIRST_CCK_RATE;404 if (IWL_RATE_5M_INDEX < lowest_present_cck)405 cck |= IWL_RATE_BIT_MSK(5) >> IWL_FIRST_CCK_RATE;406 if (IWL_RATE_2M_INDEX < lowest_present_cck)407 cck |= IWL_RATE_BIT_MSK(2) >> IWL_FIRST_CCK_RATE;408 /* 1M already there or needed so always add */409 cck |= IWL_RATE_BIT_MSK(1) >> IWL_FIRST_CCK_RATE;410 411 *cck_rates = cck;412 *ofdm_rates = ofdm;413}414 415void iwl_mvm_set_fw_basic_rates(struct iwl_mvm *mvm, struct ieee80211_vif *vif,416 struct iwl_mvm_vif_link_info *link_info,417 __le32 *cck_rates, __le32 *ofdm_rates)418{419 struct iwl_mvm_phy_ctxt *phy_ctxt;420 u8 cck_ack_rates = 0, ofdm_ack_rates = 0;421 enum nl80211_band band = NL80211_BAND_2GHZ;422 423 phy_ctxt = link_info->phy_ctxt;424 if (phy_ctxt && phy_ctxt->channel)425 band = phy_ctxt->channel->band;426 427 iwl_mvm_ack_rates(mvm, vif, band, &cck_ack_rates, &ofdm_ack_rates);428 429 *cck_rates = cpu_to_le32((u32)cck_ack_rates);430 *ofdm_rates = cpu_to_le32((u32)ofdm_ack_rates);431}432 433void iwl_mvm_set_fw_protection_flags(struct iwl_mvm *mvm,434 struct ieee80211_vif *vif,435 struct ieee80211_bss_conf *link_conf,436 __le32 *protection_flags, u32 ht_flag,437 u32 tgg_flag)438{439 /* for both sta and ap, ht_operation_mode hold the protection_mode */440 u8 protection_mode = link_conf->ht_operation_mode &441 IEEE80211_HT_OP_MODE_PROTECTION;442 bool ht_enabled = !!(link_conf->ht_operation_mode &443 IEEE80211_HT_OP_MODE_PROTECTION);444 445 if (link_conf->use_cts_prot)446 *protection_flags |= cpu_to_le32(tgg_flag);447 448 IWL_DEBUG_RATE(mvm, "use_cts_prot %d, ht_operation_mode %d\n",449 link_conf->use_cts_prot,450 link_conf->ht_operation_mode);451 452 if (!ht_enabled)453 return;454 455 IWL_DEBUG_RATE(mvm, "protection mode set to %d\n", protection_mode);456 /*457 * See section 9.23.3.1 of IEEE 80211-2012.458 * Nongreenfield HT STAs Present is not supported.459 */460 switch (protection_mode) {461 case IEEE80211_HT_OP_MODE_PROTECTION_NONE:462 break;463 case IEEE80211_HT_OP_MODE_PROTECTION_NONMEMBER:464 case IEEE80211_HT_OP_MODE_PROTECTION_NONHT_MIXED:465 *protection_flags |= cpu_to_le32(ht_flag);466 break;467 case IEEE80211_HT_OP_MODE_PROTECTION_20MHZ:468 /* Protect when channel wider than 20MHz */469 if (link_conf->chanreq.oper.width > NL80211_CHAN_WIDTH_20)470 *protection_flags |= cpu_to_le32(ht_flag);471 break;472 default:473 IWL_ERR(mvm, "Illegal protection mode %d\n",474 protection_mode);475 break;476 }477}478 479void iwl_mvm_set_fw_qos_params(struct iwl_mvm *mvm, struct ieee80211_vif *vif,480 struct ieee80211_bss_conf *link_conf,481 struct iwl_ac_qos *ac, __le32 *qos_flags)482{483 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);484 struct iwl_mvm_vif_link_info *mvm_link =485 mvmvif->link[link_conf->link_id];486 int i;487 488 if (!mvm_link)489 return;490 491 for (i = 0; i < IEEE80211_NUM_ACS; i++) {492 u8 txf = iwl_mvm_mac_ac_to_tx_fifo(mvm, i);493 u8 ucode_ac = iwl_mvm_mac80211_ac_to_ucode_ac(i);494 495 ac[ucode_ac].cw_min =496 cpu_to_le16(mvm_link->queue_params[i].cw_min);497 ac[ucode_ac].cw_max =498 cpu_to_le16(mvm_link->queue_params[i].cw_max);499 ac[ucode_ac].edca_txop =500 cpu_to_le16(mvm_link->queue_params[i].txop * 32);501 ac[ucode_ac].aifsn = mvm_link->queue_params[i].aifs;502 ac[ucode_ac].fifos_mask = BIT(txf);503 }504 505 if (link_conf->qos)506 *qos_flags |= cpu_to_le32(MAC_QOS_FLG_UPDATE_EDCA);507 508 if (link_conf->chanreq.oper.width != NL80211_CHAN_WIDTH_20_NOHT)509 *qos_flags |= cpu_to_le32(MAC_QOS_FLG_TGN);510}511 512int iwl_mvm_get_mac_type(struct ieee80211_vif *vif)513{514 u32 mac_type = FW_MAC_TYPE_BSS_STA;515 516 switch (vif->type) {517 case NL80211_IFTYPE_STATION:518 if (vif->p2p)519 mac_type = FW_MAC_TYPE_P2P_STA;520 else521 mac_type = FW_MAC_TYPE_BSS_STA;522 break;523 case NL80211_IFTYPE_AP:524 mac_type = FW_MAC_TYPE_GO;525 break;526 case NL80211_IFTYPE_MONITOR:527 mac_type = FW_MAC_TYPE_LISTENER;528 break;529 case NL80211_IFTYPE_P2P_DEVICE:530 mac_type = FW_MAC_TYPE_P2P_DEVICE;531 break;532 case NL80211_IFTYPE_ADHOC:533 mac_type = FW_MAC_TYPE_IBSS;534 break;535 default:536 WARN_ON_ONCE(1);537 }538 return mac_type;539}540 541static void iwl_mvm_mac_ctxt_cmd_common(struct iwl_mvm *mvm,542 struct ieee80211_vif *vif,543 struct iwl_mac_ctx_cmd *cmd,544 const u8 *bssid_override,545 u32 action)546{547 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);548 const u8 *bssid = bssid_override ?: vif->bss_conf.bssid;549 u32 ht_flag;550 551 cmd->id_and_color = cpu_to_le32(FW_CMD_ID_AND_COLOR(mvmvif->id,552 mvmvif->color));553 cmd->action = cpu_to_le32(action);554 cmd->mac_type = cpu_to_le32(iwl_mvm_get_mac_type(vif));555 556 cmd->tsf_id = cpu_to_le32(mvmvif->tsf_id);557 558 memcpy(cmd->node_addr, vif->addr, ETH_ALEN);559 560 if (bssid)561 memcpy(cmd->bssid_addr, bssid, ETH_ALEN);562 else563 eth_broadcast_addr(cmd->bssid_addr);564 565 iwl_mvm_set_fw_basic_rates(mvm, vif, &mvmvif->deflink, &cmd->cck_rates,566 &cmd->ofdm_rates);567 568 cmd->cck_short_preamble =569 cpu_to_le32(vif->bss_conf.use_short_preamble ?570 MAC_FLG_SHORT_PREAMBLE : 0);571 cmd->short_slot =572 cpu_to_le32(vif->bss_conf.use_short_slot ?573 MAC_FLG_SHORT_SLOT : 0);574 575 cmd->filter_flags = 0;576 577 iwl_mvm_set_fw_qos_params(mvm, vif, &vif->bss_conf, cmd->ac,578 &cmd->qos_flags);579 580 /* The fw does not distinguish between ht and fat */581 ht_flag = MAC_PROT_FLG_HT_PROT | MAC_PROT_FLG_FAT_PROT;582 iwl_mvm_set_fw_protection_flags(mvm, vif, &vif->bss_conf,583 &cmd->protection_flags,584 ht_flag, MAC_PROT_FLG_TGG_PROTECT);585}586 587static int iwl_mvm_mac_ctxt_send_cmd(struct iwl_mvm *mvm,588 struct iwl_mac_ctx_cmd *cmd)589{590 int ret = iwl_mvm_send_cmd_pdu(mvm, MAC_CONTEXT_CMD, 0,591 sizeof(*cmd), cmd);592 if (ret)593 IWL_ERR(mvm, "Failed to send MAC_CONTEXT_CMD (action:%d): %d\n",594 le32_to_cpu(cmd->action), ret);595 return ret;596}597 598void iwl_mvm_set_fw_dtim_tbtt(struct iwl_mvm *mvm, struct ieee80211_vif *vif,599 struct ieee80211_bss_conf *link_conf,600 __le64 *dtim_tsf, __le32 *dtim_time,601 __le32 *assoc_beacon_arrive_time)602{603 u32 dtim_offs;604 605 /*606 * The DTIM count counts down, so when it is N that means N607 * more beacon intervals happen until the DTIM TBTT. Therefore608 * add this to the current time. If that ends up being in the609 * future, the firmware will handle it.610 *611 * Also note that the system_timestamp (which we get here as612 * "sync_device_ts") and TSF timestamp aren't at exactly the613 * same offset in the frame -- the TSF is at the first symbol614 * of the TSF, the system timestamp is at signal acquisition615 * time. This means there's an offset between them of at most616 * a few hundred microseconds (24 * 8 bits + PLCP time gives617 * 384us in the longest case), this is currently not relevant618 * as the firmware wakes up around 2ms before the TBTT.619 */620 dtim_offs = link_conf->sync_dtim_count *621 link_conf->beacon_int;622 /* convert TU to usecs */623 dtim_offs *= 1024;624 625 *dtim_tsf =626 cpu_to_le64(link_conf->sync_tsf + dtim_offs);627 *dtim_time =628 cpu_to_le32(link_conf->sync_device_ts + dtim_offs);629 *assoc_beacon_arrive_time =630 cpu_to_le32(link_conf->sync_device_ts);631 632 IWL_DEBUG_INFO(mvm, "DTIM TBTT is 0x%llx/0x%x, offset %d\n",633 le64_to_cpu(*dtim_tsf),634 le32_to_cpu(*dtim_time),635 dtim_offs);636}637 638__le32 iwl_mvm_mac_ctxt_cmd_p2p_sta_get_oppps_ctwin(struct iwl_mvm *mvm,639 struct ieee80211_vif *vif)640{641 struct ieee80211_p2p_noa_attr *noa =642 &vif->bss_conf.p2p_noa_attr;643 644 return cpu_to_le32(noa->oppps_ctwindow &645 IEEE80211_P2P_OPPPS_CTWINDOW_MASK);646}647 648u32 iwl_mvm_mac_ctxt_cmd_sta_get_twt_policy(struct iwl_mvm *mvm,649 struct ieee80211_vif *vif)650{651 u32 twt_policy = 0;652 653 if (vif->bss_conf.twt_requester && IWL_MVM_USE_TWT)654 twt_policy |= TWT_SUPPORTED;655 if (vif->bss_conf.twt_protected)656 twt_policy |= PROTECTED_TWT_SUPPORTED;657 if (vif->bss_conf.twt_broadcast)658 twt_policy |= BROADCAST_TWT_SUPPORTED;659 660 return twt_policy;661}662 663static int iwl_mvm_mac_ctxt_cmd_sta(struct iwl_mvm *mvm,664 struct ieee80211_vif *vif,665 u32 action, bool force_assoc_off,666 const u8 *bssid_override)667{668 struct iwl_mac_ctx_cmd cmd = {};669 struct iwl_mac_data_sta *ctxt_sta;670 671 WARN_ON(vif->type != NL80211_IFTYPE_STATION);672 673 /* Fill the common data for all mac context types */674 iwl_mvm_mac_ctxt_cmd_common(mvm, vif, &cmd, bssid_override, action);675 676 /*677 * We always want to hear MCAST frames, if we're not authorized yet,678 * we'll drop them.679 */680 cmd.filter_flags |= cpu_to_le32(MAC_FILTER_ACCEPT_GRP);681 682 if (vif->p2p) {683 cmd.p2p_sta.ctwin =684 iwl_mvm_mac_ctxt_cmd_p2p_sta_get_oppps_ctwin(mvm, vif);685 686 ctxt_sta = &cmd.p2p_sta.sta;687 } else {688 ctxt_sta = &cmd.sta;689 }690 691 /* We need the dtim_period to set the MAC as associated */692 if (vif->cfg.assoc && vif->bss_conf.dtim_period &&693 !force_assoc_off) {694 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);695 696 iwl_mvm_set_fw_dtim_tbtt(mvm, vif, &vif->bss_conf,697 &ctxt_sta->dtim_tsf,698 &ctxt_sta->dtim_time,699 &ctxt_sta->assoc_beacon_arrive_time);700 701 ctxt_sta->is_assoc = cpu_to_le32(1);702 703 if (!mvmvif->authorized &&704 fw_has_capa(&mvm->fw->ucode_capa,705 IWL_UCODE_TLV_CAPA_COEX_HIGH_PRIO))706 ctxt_sta->data_policy |=707 cpu_to_le32(COEX_HIGH_PRIORITY_ENABLE);708 } else {709 ctxt_sta->is_assoc = cpu_to_le32(0);710 711 /* Allow beacons to pass through as long as we are not712 * associated, or we do not have dtim period information.713 */714 cmd.filter_flags |= cpu_to_le32(MAC_FILTER_IN_BEACON);715 }716 717 ctxt_sta->bi = cpu_to_le32(vif->bss_conf.beacon_int);718 ctxt_sta->dtim_interval = cpu_to_le32(vif->bss_conf.beacon_int *719 vif->bss_conf.dtim_period);720 721 ctxt_sta->listen_interval = cpu_to_le32(mvm->hw->conf.listen_interval);722 ctxt_sta->assoc_id = cpu_to_le32(vif->cfg.aid);723 724 if (vif->probe_req_reg && vif->cfg.assoc && vif->p2p)725 cmd.filter_flags |= cpu_to_le32(MAC_FILTER_IN_PROBE_REQUEST);726 727 if (vif->bss_conf.he_support && !iwlwifi_mod_params.disable_11ax) {728 cmd.filter_flags |= cpu_to_le32(MAC_FILTER_IN_11AX);729 ctxt_sta->data_policy |=730 cpu_to_le32(iwl_mvm_mac_ctxt_cmd_sta_get_twt_policy(mvm, vif));731 }732 733 734 return iwl_mvm_mac_ctxt_send_cmd(mvm, &cmd);735}736 737static int iwl_mvm_mac_ctxt_cmd_listener(struct iwl_mvm *mvm,738 struct ieee80211_vif *vif,739 u32 action)740{741 struct iwl_mac_ctx_cmd cmd = {};742 u32 tfd_queue_msk = 0;743 int ret;744 745 WARN_ON(vif->type != NL80211_IFTYPE_MONITOR);746 747 iwl_mvm_mac_ctxt_cmd_common(mvm, vif, &cmd, NULL, action);748 749 cmd.filter_flags = cpu_to_le32(MAC_FILTER_IN_PROMISC |750 MAC_FILTER_IN_CONTROL_AND_MGMT |751 MAC_FILTER_IN_BEACON |752 MAC_FILTER_IN_PROBE_REQUEST |753 MAC_FILTER_IN_CRC32 |754 MAC_FILTER_ACCEPT_GRP);755 ieee80211_hw_set(mvm->hw, RX_INCLUDES_FCS);756 757 /*758 * the queue mask is only relevant for old TX API, and759 * mvm->snif_queue isn't set here (it's still set to760 * IWL_MVM_INVALID_QUEUE so the BIT() of it is UB)761 */762 if (!iwl_mvm_has_new_tx_api(mvm))763 tfd_queue_msk = BIT(mvm->snif_queue);764 765 /* Allocate sniffer station */766 ret = iwl_mvm_allocate_int_sta(mvm, &mvm->snif_sta, tfd_queue_msk,767 vif->type, IWL_STA_GENERAL_PURPOSE);768 if (ret)769 return ret;770 771 return iwl_mvm_mac_ctxt_send_cmd(mvm, &cmd);772}773 774static int iwl_mvm_mac_ctxt_cmd_ibss(struct iwl_mvm *mvm,775 struct ieee80211_vif *vif,776 u32 action)777{778 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);779 struct iwl_mac_ctx_cmd cmd = {};780 781 WARN_ON(vif->type != NL80211_IFTYPE_ADHOC);782 783 iwl_mvm_mac_ctxt_cmd_common(mvm, vif, &cmd, NULL, action);784 785 cmd.filter_flags = cpu_to_le32(MAC_FILTER_IN_BEACON |786 MAC_FILTER_IN_PROBE_REQUEST |787 MAC_FILTER_ACCEPT_GRP);788 789 /* cmd.ibss.beacon_time/cmd.ibss.beacon_tsf are curently ignored */790 cmd.ibss.bi = cpu_to_le32(vif->bss_conf.beacon_int);791 792 /* TODO: Assumes that the beacon id == mac context id */793 cmd.ibss.beacon_template = cpu_to_le32(mvmvif->id);794 795 return iwl_mvm_mac_ctxt_send_cmd(mvm, &cmd);796}797 798struct iwl_mvm_go_iterator_data {799 bool go_active;800};801 802static void iwl_mvm_go_iterator(void *_data, u8 *mac, struct ieee80211_vif *vif)803{804 struct iwl_mvm_go_iterator_data *data = _data;805 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);806 807 if (vif->type == NL80211_IFTYPE_AP && vif->p2p &&808 mvmvif->ap_ibss_active)809 data->go_active = true;810}811 812__le32 iwl_mac_ctxt_p2p_dev_has_extended_disc(struct iwl_mvm *mvm,813 struct ieee80211_vif *vif)814{815 struct iwl_mvm_go_iterator_data data = {};816 817 /*818 * This flag should be set to true when the P2P Device is819 * discoverable and there is at least another active P2P GO. Settings820 * this flag will allow the P2P Device to be discoverable on other821 * channels in addition to its listen channel.822 * Note that this flag should not be set in other cases as it opens the823 * Rx filters on all MAC and increases the number of interrupts.824 */825 ieee80211_iterate_active_interfaces_atomic(826 mvm->hw, IEEE80211_IFACE_ITER_RESUME_ALL,827 iwl_mvm_go_iterator, &data);828 829 return cpu_to_le32(data.go_active ? 1 : 0);830}831 832static int iwl_mvm_mac_ctxt_cmd_p2p_device(struct iwl_mvm *mvm,833 struct ieee80211_vif *vif,834 u32 action)835{836 struct iwl_mac_ctx_cmd cmd = {};837 838 WARN_ON(vif->type != NL80211_IFTYPE_P2P_DEVICE);839 840 iwl_mvm_mac_ctxt_cmd_common(mvm, vif, &cmd, NULL, action);841 842 cmd.p2p_dev.is_disc_extended =843 iwl_mac_ctxt_p2p_dev_has_extended_disc(mvm, vif);844 845 /* Override the filter flags to accept only probe requests */846 cmd.filter_flags = cpu_to_le32(MAC_FILTER_IN_PROBE_REQUEST);847 848 return iwl_mvm_mac_ctxt_send_cmd(mvm, &cmd);849}850 851void iwl_mvm_mac_ctxt_set_tim(struct iwl_mvm *mvm,852 __le32 *tim_index, __le32 *tim_size,853 u8 *beacon, u32 frame_size)854{855 u32 tim_idx;856 struct ieee80211_mgmt *mgmt = (struct ieee80211_mgmt *)beacon;857 858 /* The index is relative to frame start but we start looking at the859 * variable-length part of the beacon. */860 tim_idx = mgmt->u.beacon.variable - beacon;861 862 /* Parse variable-length elements of beacon to find WLAN_EID_TIM */863 while ((tim_idx < (frame_size - 2)) &&864 (beacon[tim_idx] != WLAN_EID_TIM))865 tim_idx += beacon[tim_idx+1] + 2;866 867 /* If TIM field was found, set variables */868 if ((tim_idx < (frame_size - 1)) && (beacon[tim_idx] == WLAN_EID_TIM)) {869 *tim_index = cpu_to_le32(tim_idx);870 *tim_size = cpu_to_le32((u32)beacon[tim_idx + 1]);871 } else {872 IWL_WARN(mvm, "Unable to find TIM Element in beacon\n");873 }874}875 876u32 iwl_mvm_find_ie_offset(u8 *beacon, u8 eid, u32 frame_size)877{878 struct ieee80211_mgmt *mgmt = (void *)beacon;879 const u8 *ie;880 881 if (WARN_ON_ONCE(frame_size <= (mgmt->u.beacon.variable - beacon)))882 return 0;883 884 frame_size -= mgmt->u.beacon.variable - beacon;885 886 ie = cfg80211_find_ie(eid, mgmt->u.beacon.variable, frame_size);887 if (!ie)888 return 0;889 890 return ie - beacon;891}892 893u8 iwl_mvm_mac_ctxt_get_lowest_rate(struct iwl_mvm *mvm,894 struct ieee80211_tx_info *info,895 struct ieee80211_vif *vif)896{897 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);898 struct ieee80211_supported_band *sband;899 unsigned long basic = vif->bss_conf.basic_rates;900 u16 lowest_cck = IWL_RATE_COUNT, lowest_ofdm = IWL_RATE_COUNT;901 u32 link_id = u32_get_bits(info->control.flags,902 IEEE80211_TX_CTRL_MLO_LINK);903 u8 band = info->band;904 u8 rate;905 u32 i;906 907 if (link_id == IEEE80211_LINK_UNSPECIFIED && ieee80211_vif_is_mld(vif)) {908 for (i = 0; i < ARRAY_SIZE(mvmvif->link); i++) {909 if (!mvmvif->link[i])910 continue;911 /* shouldn't do this when >1 link is active */912 WARN_ON_ONCE(link_id != IEEE80211_LINK_UNSPECIFIED);913 link_id = i;914 }915 }916 917 if (link_id < IEEE80211_LINK_UNSPECIFIED) {918 struct ieee80211_bss_conf *link_conf;919 920 rcu_read_lock();921 link_conf = rcu_dereference(vif->link_conf[link_id]);922 if (link_conf) {923 basic = link_conf->basic_rates;924 if (link_conf->chanreq.oper.chan)925 band = link_conf->chanreq.oper.chan->band;926 }927 rcu_read_unlock();928 }929 930 sband = mvm->hw->wiphy->bands[band];931 for_each_set_bit(i, &basic, BITS_PER_LONG) {932 u16 hw = sband->bitrates[i].hw_value;933 934 if (hw >= IWL_FIRST_OFDM_RATE) {935 if (lowest_ofdm > hw)936 lowest_ofdm = hw;937 } else if (lowest_cck > hw) {938 lowest_cck = hw;939 }940 }941 942 if (band == NL80211_BAND_2GHZ && !vif->p2p &&943 vif->type != NL80211_IFTYPE_P2P_DEVICE &&944 !(info->flags & IEEE80211_TX_CTL_NO_CCK_RATE)) {945 if (lowest_cck != IWL_RATE_COUNT)946 rate = lowest_cck;947 else if (lowest_ofdm != IWL_RATE_COUNT)948 rate = lowest_ofdm;949 else950 rate = IWL_RATE_1M_INDEX;951 } else if (lowest_ofdm != IWL_RATE_COUNT) {952 rate = lowest_ofdm;953 } else {954 rate = IWL_RATE_6M_INDEX;955 }956 957 return rate;958}959 960u16 iwl_mvm_mac_ctxt_get_beacon_flags(const struct iwl_fw *fw, u8 rate_idx)961{962 u16 flags = iwl_mvm_mac80211_idx_to_hwrate(fw, rate_idx);963 bool is_new_rate = iwl_fw_lookup_cmd_ver(fw, BEACON_TEMPLATE_CMD, 0) > 10;964 965 if (rate_idx <= IWL_FIRST_CCK_RATE)966 flags |= is_new_rate ? IWL_MAC_BEACON_CCK967 : IWL_MAC_BEACON_CCK_V1;968 969 return flags;970}971 972u8 iwl_mvm_mac_ctxt_get_beacon_rate(struct iwl_mvm *mvm,973 struct ieee80211_tx_info *info,974 struct ieee80211_vif *vif)975{976 struct ieee80211_supported_band *sband =977 mvm->hw->wiphy->bands[info->band];978 u32 legacy = vif->bss_conf.beacon_tx_rate.control[info->band].legacy;979 980 /* if beacon rate was configured try using it */981 if (hweight32(legacy) == 1) {982 u32 rate = ffs(legacy) - 1;983 984 return sband->bitrates[rate].hw_value;985 }986 987 return iwl_mvm_mac_ctxt_get_lowest_rate(mvm, info, vif);988}989 990static void iwl_mvm_mac_ctxt_set_tx(struct iwl_mvm *mvm,991 struct ieee80211_vif *vif,992 struct sk_buff *beacon,993 struct iwl_tx_cmd *tx)994{995 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);996 struct ieee80211_tx_info *info;997 u8 rate;998 u32 tx_flags;999 1000 info = IEEE80211_SKB_CB(beacon);1001 1002 /* Set up TX command fields */1003 tx->len = cpu_to_le16((u16)beacon->len);1004 tx->sta_id = mvmvif->deflink.bcast_sta.sta_id;1005 tx->life_time = cpu_to_le32(TX_CMD_LIFE_TIME_INFINITE);1006 tx_flags = TX_CMD_FLG_SEQ_CTL | TX_CMD_FLG_TSF;1007 tx_flags |=1008 iwl_mvm_bt_coex_tx_prio(mvm, (void *)beacon->data, info, 0) <<1009 TX_CMD_FLG_BT_PRIO_POS;1010 tx->tx_flags = cpu_to_le32(tx_flags);1011 1012 if (!fw_has_capa(&mvm->fw->ucode_capa,1013 IWL_UCODE_TLV_CAPA_BEACON_ANT_SELECTION)) {1014 iwl_mvm_toggle_tx_ant(mvm, &mvm->mgmt_last_antenna_idx);1015 1016 tx->rate_n_flags =1017 cpu_to_le32(BIT(mvm->mgmt_last_antenna_idx) <<1018 RATE_MCS_ANT_POS);1019 }1020 1021 rate = iwl_mvm_mac_ctxt_get_beacon_rate(mvm, info, vif);1022 1023 tx->rate_n_flags |=1024 cpu_to_le32(iwl_mvm_mac80211_idx_to_hwrate(mvm->fw, rate));1025 if (rate == IWL_FIRST_CCK_RATE)1026 tx->rate_n_flags |= cpu_to_le32(RATE_MCS_CCK_MSK_V1);1027 1028}1029 1030int iwl_mvm_mac_ctxt_send_beacon_cmd(struct iwl_mvm *mvm,1031 struct sk_buff *beacon,1032 void *data, int len)1033{1034 struct iwl_host_cmd cmd = {1035 .id = BEACON_TEMPLATE_CMD,1036 .flags = CMD_ASYNC,1037 };1038 1039 cmd.len[0] = len;1040 cmd.data[0] = data;1041 cmd.dataflags[0] = 0;1042 cmd.len[1] = beacon->len;1043 cmd.data[1] = beacon->data;1044 cmd.dataflags[1] = IWL_HCMD_DFL_DUP;1045 1046 return iwl_mvm_send_cmd(mvm, &cmd);1047}1048 1049static int iwl_mvm_mac_ctxt_send_beacon_v6(struct iwl_mvm *mvm,1050 struct ieee80211_vif *vif,1051 struct sk_buff *beacon)1052{1053 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);1054 struct iwl_mac_beacon_cmd_v6 beacon_cmd = {};1055 1056 iwl_mvm_mac_ctxt_set_tx(mvm, vif, beacon, &beacon_cmd.tx);1057 1058 beacon_cmd.template_id = cpu_to_le32((u32)mvmvif->id);1059 1060 if (vif->type == NL80211_IFTYPE_AP)1061 iwl_mvm_mac_ctxt_set_tim(mvm, &beacon_cmd.tim_idx,1062 &beacon_cmd.tim_size,1063 beacon->data, beacon->len);1064 1065 return iwl_mvm_mac_ctxt_send_beacon_cmd(mvm, beacon, &beacon_cmd,1066 sizeof(beacon_cmd));1067}1068 1069static int iwl_mvm_mac_ctxt_send_beacon_v7(struct iwl_mvm *mvm,1070 struct ieee80211_vif *vif,1071 struct sk_buff *beacon)1072{1073 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);1074 struct iwl_mac_beacon_cmd_v7 beacon_cmd = {};1075 1076 iwl_mvm_mac_ctxt_set_tx(mvm, vif, beacon, &beacon_cmd.tx);1077 1078 beacon_cmd.template_id = cpu_to_le32((u32)mvmvif->id);1079 1080 if (vif->type == NL80211_IFTYPE_AP)1081 iwl_mvm_mac_ctxt_set_tim(mvm, &beacon_cmd.tim_idx,1082 &beacon_cmd.tim_size,1083 beacon->data, beacon->len);1084 1085 beacon_cmd.csa_offset =1086 cpu_to_le32(iwl_mvm_find_ie_offset(beacon->data,1087 WLAN_EID_CHANNEL_SWITCH,1088 beacon->len));1089 beacon_cmd.ecsa_offset =1090 cpu_to_le32(iwl_mvm_find_ie_offset(beacon->data,1091 WLAN_EID_EXT_CHANSWITCH_ANN,1092 beacon->len));1093 1094 return iwl_mvm_mac_ctxt_send_beacon_cmd(mvm, beacon, &beacon_cmd,1095 sizeof(beacon_cmd));1096}1097 1098bool iwl_mvm_enable_fils(struct iwl_mvm *mvm,1099 struct ieee80211_chanctx_conf *ctx)1100{1101 if (IWL_MVM_DISABLE_AP_FILS)1102 return false;1103 1104 if (cfg80211_channel_is_psc(ctx->def.chan))1105 return true;1106 1107 return (ctx->def.chan->band == NL80211_BAND_6GHZ &&1108 ctx->def.width >= NL80211_CHAN_WIDTH_80);1109}1110 1111static int iwl_mvm_mac_ctxt_send_beacon_v9(struct iwl_mvm *mvm,1112 struct ieee80211_vif *vif,1113 struct sk_buff *beacon,1114 struct ieee80211_bss_conf *link_conf)1115{1116 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);1117 struct ieee80211_tx_info *info = IEEE80211_SKB_CB(beacon);1118 struct iwl_mac_beacon_cmd beacon_cmd = {};1119 u8 rate = iwl_mvm_mac_ctxt_get_beacon_rate(mvm, info, vif);1120 u16 flags;1121 struct ieee80211_chanctx_conf *ctx;1122 int channel;1123 flags = iwl_mvm_mac_ctxt_get_beacon_flags(mvm->fw, rate);1124 1125 /* Enable FILS on PSC channels only */1126 rcu_read_lock();1127 ctx = rcu_dereference(link_conf->chanctx_conf);1128 channel = ieee80211_frequency_to_channel(ctx->def.chan->center_freq);1129 WARN_ON(channel == 0);1130 if (iwl_mvm_enable_fils(mvm, ctx)) {1131 flags |= iwl_fw_lookup_cmd_ver(mvm->fw, BEACON_TEMPLATE_CMD,1132 0) > 10 ?1133 IWL_MAC_BEACON_FILS :1134 IWL_MAC_BEACON_FILS_V1;1135 beacon_cmd.short_ssid =1136 cpu_to_le32(~crc32_le(~0, vif->cfg.ssid,1137 vif->cfg.ssid_len));1138 }1139 rcu_read_unlock();1140 1141 beacon_cmd.flags = cpu_to_le16(flags);1142 beacon_cmd.byte_cnt = cpu_to_le16((u16)beacon->len);1143 1144 if (WARN_ON(!mvmvif->link[link_conf->link_id]))1145 return -EINVAL;1146 1147 if (iwl_fw_lookup_cmd_ver(mvm->fw, BEACON_TEMPLATE_CMD, 0) > 12)1148 beacon_cmd.link_id =1149 cpu_to_le32(mvmvif->link[link_conf->link_id]->fw_link_id);1150 else1151 beacon_cmd.link_id = cpu_to_le32((u32)mvmvif->id);1152 1153 if (vif->type == NL80211_IFTYPE_AP)1154 iwl_mvm_mac_ctxt_set_tim(mvm, &beacon_cmd.tim_idx,1155 &beacon_cmd.tim_size,1156 beacon->data, beacon->len);1157 1158 beacon_cmd.csa_offset =1159 cpu_to_le32(iwl_mvm_find_ie_offset(beacon->data,1160 WLAN_EID_CHANNEL_SWITCH,1161 beacon->len));1162 beacon_cmd.ecsa_offset =1163 cpu_to_le32(iwl_mvm_find_ie_offset(beacon->data,1164 WLAN_EID_EXT_CHANSWITCH_ANN,1165 beacon->len));1166 1167 if (vif->type == NL80211_IFTYPE_AP &&1168 iwl_fw_lookup_cmd_ver(mvm->fw, BEACON_TEMPLATE_CMD, 0) >= 14)1169 beacon_cmd.btwt_offset =1170 cpu_to_le32(iwl_mvm_find_ie_offset(beacon->data,1171 WLAN_EID_S1G_TWT,1172 beacon->len));1173 1174 return iwl_mvm_mac_ctxt_send_beacon_cmd(mvm, beacon, &beacon_cmd,1175 sizeof(beacon_cmd));1176}1177 1178static int iwl_mvm_mac_ctxt_send_beacon(struct iwl_mvm *mvm,1179 struct ieee80211_vif *vif,1180 struct sk_buff *beacon,1181 struct ieee80211_bss_conf *link_conf)1182{1183 if (WARN_ON(!beacon))1184 return -EINVAL;1185 1186 if (IWL_MVM_NON_TRANSMITTING_AP)1187 return 0;1188 1189 if (!fw_has_capa(&mvm->fw->ucode_capa,1190 IWL_UCODE_TLV_CAPA_CSA_AND_TBTT_OFFLOAD))1191 return iwl_mvm_mac_ctxt_send_beacon_v6(mvm, vif, beacon);1192 1193 if (fw_has_api(&mvm->fw->ucode_capa,1194 IWL_UCODE_TLV_API_NEW_BEACON_TEMPLATE))1195 return iwl_mvm_mac_ctxt_send_beacon_v9(mvm, vif, beacon,1196 link_conf);1197 1198 return iwl_mvm_mac_ctxt_send_beacon_v7(mvm, vif, beacon);1199}1200 1201/* The beacon template for the AP/GO/IBSS has changed and needs update */1202int iwl_mvm_mac_ctxt_beacon_changed(struct iwl_mvm *mvm,1203 struct ieee80211_vif *vif,1204 struct ieee80211_bss_conf *link_conf)1205{1206 struct sk_buff *beacon;1207 int ret;1208 1209 WARN_ON(vif->type != NL80211_IFTYPE_AP &&1210 vif->type != NL80211_IFTYPE_ADHOC);1211 1212 beacon = ieee80211_beacon_get_template(mvm->hw, vif, NULL,1213 link_conf->link_id);1214 if (!beacon)1215 return -ENOMEM;1216 1217#ifdef CONFIG_IWLWIFI_DEBUGFS1218 if (mvm->beacon_inject_active) {1219 dev_kfree_skb(beacon);1220 return -EBUSY;1221 }1222#endif1223 1224 ret = iwl_mvm_mac_ctxt_send_beacon(mvm, vif, beacon, link_conf);1225 dev_kfree_skb(beacon);1226 return ret;1227}1228 1229struct iwl_mvm_mac_ap_iterator_data {1230 struct iwl_mvm *mvm;1231 struct ieee80211_vif *vif;1232 u32 beacon_device_ts;1233 u16 beacon_int;1234};1235 1236/* Find the beacon_device_ts and beacon_int for a managed interface */1237static void iwl_mvm_mac_ap_iterator(void *_data, u8 *mac,1238 struct ieee80211_vif *vif)1239{1240 struct iwl_mvm_mac_ap_iterator_data *data = _data;1241 1242 if (vif->type != NL80211_IFTYPE_STATION || !vif->cfg.assoc)1243 return;1244 1245 /* Station client has higher priority over P2P client*/1246 if (vif->p2p && data->beacon_device_ts)1247 return;1248 1249 data->beacon_device_ts = vif->bss_conf.sync_device_ts;1250 data->beacon_int = vif->bss_conf.beacon_int;1251}1252 1253/*1254 * Fill the filter flags for mac context of type AP or P2P GO.1255 */1256void iwl_mvm_mac_ctxt_cmd_ap_set_filter_flags(struct iwl_mvm *mvm,1257 struct iwl_mvm_vif *mvmvif,1258 __le32 *filter_flags,1259 int accept_probe_req_flag,1260 int accept_beacon_flag)1261{1262 /*1263 * in AP mode, pass probe requests and beacons from other APs1264 * (needed for ht protection); when there're no any associated1265 * station don't ask FW to pass beacons to prevent unnecessary1266 * wake-ups.1267 */1268 *filter_flags |= cpu_to_le32(accept_probe_req_flag);1269 if (mvmvif->ap_assoc_sta_count || !mvm->drop_bcn_ap_mode) {1270 *filter_flags |= cpu_to_le32(accept_beacon_flag);1271 IWL_DEBUG_HC(mvm, "Asking FW to pass beacons\n");1272 } else {1273 IWL_DEBUG_HC(mvm, "No need to receive beacons\n");1274 }1275}1276 1277/*1278 * Fill the specific data for mac context of type AP of P2P GO1279 */1280static void iwl_mvm_mac_ctxt_cmd_fill_ap(struct iwl_mvm *mvm,1281 struct ieee80211_vif *vif,1282 struct iwl_mac_ctx_cmd *cmd,1283 struct iwl_mac_data_ap *ctxt_ap,1284 bool add)1285{1286 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);1287 struct iwl_mvm_mac_ap_iterator_data data = {1288 .mvm = mvm,1289 .vif = vif,1290 .beacon_device_ts = 01291 };1292 1293 /* in AP mode, the MCAST FIFO takes the EDCA params from VO */1294 cmd->ac[IWL_MVM_TX_FIFO_VO].fifos_mask |= BIT(IWL_MVM_TX_FIFO_MCAST);1295 1296 iwl_mvm_mac_ctxt_cmd_ap_set_filter_flags(mvm, mvmvif,1297 &cmd->filter_flags,1298 MAC_FILTER_IN_PROBE_REQUEST,1299 MAC_FILTER_IN_BEACON);1300 1301 ctxt_ap->bi = cpu_to_le32(vif->bss_conf.beacon_int);1302 ctxt_ap->dtim_interval = cpu_to_le32(vif->bss_conf.beacon_int *1303 vif->bss_conf.dtim_period);1304 1305 if (!fw_has_api(&mvm->fw->ucode_capa,1306 IWL_UCODE_TLV_API_STA_TYPE))1307 ctxt_ap->mcast_qid = cpu_to_le32(mvmvif->deflink.cab_queue);1308 1309 /*1310 * Only set the beacon time when the MAC is being added, when we1311 * just modify the MAC then we should keep the time -- the firmware1312 * can otherwise have a "jumping" TBTT.1313 */1314 if (add) {1315 /*1316 * If there is a station/P2P client interface which is1317 * associated, set the AP's TBTT far enough from the station's1318 * TBTT. Otherwise, set it to the current system time1319 */1320 ieee80211_iterate_active_interfaces_atomic(1321 mvm->hw, IEEE80211_IFACE_ITER_RESUME_ALL,1322 iwl_mvm_mac_ap_iterator, &data);1323 1324 if (data.beacon_device_ts) {1325 u32 rand = get_random_u32_inclusive(36, 63);1326 mvmvif->ap_beacon_time = data.beacon_device_ts +1327 ieee80211_tu_to_usec(data.beacon_int * rand /1328 100);1329 } else {1330 mvmvif->ap_beacon_time = iwl_mvm_get_systime(mvm);1331 }1332 }1333 1334 ctxt_ap->beacon_time = cpu_to_le32(mvmvif->ap_beacon_time);1335 ctxt_ap->beacon_tsf = 0; /* unused */1336 1337 /* TODO: Assume that the beacon id == mac context id */1338 ctxt_ap->beacon_template = cpu_to_le32(mvmvif->id);1339}1340 1341static int iwl_mvm_mac_ctxt_cmd_ap(struct iwl_mvm *mvm,1342 struct ieee80211_vif *vif,1343 u32 action)1344{1345 struct iwl_mac_ctx_cmd cmd = {};1346 1347 WARN_ON(vif->type != NL80211_IFTYPE_AP || vif->p2p);1348 1349 /* Fill the common data for all mac context types */1350 iwl_mvm_mac_ctxt_cmd_common(mvm, vif, &cmd, NULL, action);1351 1352 /* Fill the data specific for ap mode */1353 iwl_mvm_mac_ctxt_cmd_fill_ap(mvm, vif, &cmd, &cmd.ap,1354 action == FW_CTXT_ACTION_ADD);1355 1356 return iwl_mvm_mac_ctxt_send_cmd(mvm, &cmd);1357}1358 1359static int iwl_mvm_mac_ctxt_cmd_go(struct iwl_mvm *mvm,1360 struct ieee80211_vif *vif,1361 u32 action)1362{1363 struct iwl_mac_ctx_cmd cmd = {};1364 struct ieee80211_p2p_noa_attr *noa = &vif->bss_conf.p2p_noa_attr;1365 1366 WARN_ON(vif->type != NL80211_IFTYPE_AP || !vif->p2p);1367 1368 /* Fill the common data for all mac context types */1369 iwl_mvm_mac_ctxt_cmd_common(mvm, vif, &cmd, NULL, action);1370 1371 /* Fill the data specific for GO mode */1372 iwl_mvm_mac_ctxt_cmd_fill_ap(mvm, vif, &cmd, &cmd.go.ap,1373 action == FW_CTXT_ACTION_ADD);1374 1375 cmd.go.ctwin = cpu_to_le32(noa->oppps_ctwindow &1376 IEEE80211_P2P_OPPPS_CTWINDOW_MASK);1377 cmd.go.opp_ps_enabled =1378 cpu_to_le32(!!(noa->oppps_ctwindow &1379 IEEE80211_P2P_OPPPS_ENABLE_BIT));1380 1381 return iwl_mvm_mac_ctxt_send_cmd(mvm, &cmd);1382}1383 1384static int iwl_mvm_mac_ctx_send(struct iwl_mvm *mvm, struct ieee80211_vif *vif,1385 u32 action, bool force_assoc_off,1386 const u8 *bssid_override)1387{1388 switch (vif->type) {1389 case NL80211_IFTYPE_STATION:1390 return iwl_mvm_mac_ctxt_cmd_sta(mvm, vif, action,1391 force_assoc_off,1392 bssid_override);1393 case NL80211_IFTYPE_AP:1394 if (!vif->p2p)1395 return iwl_mvm_mac_ctxt_cmd_ap(mvm, vif, action);1396 else1397 return iwl_mvm_mac_ctxt_cmd_go(mvm, vif, action);1398 case NL80211_IFTYPE_MONITOR:1399 return iwl_mvm_mac_ctxt_cmd_listener(mvm, vif, action);1400 case NL80211_IFTYPE_P2P_DEVICE:1401 return iwl_mvm_mac_ctxt_cmd_p2p_device(mvm, vif, action);1402 case NL80211_IFTYPE_ADHOC:1403 return iwl_mvm_mac_ctxt_cmd_ibss(mvm, vif, action);1404 default:1405 break;1406 }1407 1408 return -EOPNOTSUPP;1409}1410 1411int iwl_mvm_mac_ctxt_add(struct iwl_mvm *mvm, struct ieee80211_vif *vif)1412{1413 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);1414 int ret;1415 1416 if (WARN_ONCE(mvmvif->uploaded, "Adding active MAC %pM/%d\n",1417 vif->addr, ieee80211_vif_type_p2p(vif)))1418 return -EIO;1419 1420 ret = iwl_mvm_mac_ctx_send(mvm, vif, FW_CTXT_ACTION_ADD,1421 true, NULL);1422 if (ret)1423 return ret;1424 1425 /* will only do anything at resume from D3 time */1426 iwl_mvm_set_last_nonqos_seq(mvm, vif);1427 1428 mvmvif->uploaded = true;1429 return 0;1430}1431 1432int iwl_mvm_mac_ctxt_changed(struct iwl_mvm *mvm, struct ieee80211_vif *vif,1433 bool force_assoc_off, const u8 *bssid_override)1434{1435 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);1436 1437 if (WARN_ONCE(!mvmvif->uploaded, "Changing inactive MAC %pM/%d\n",1438 vif->addr, ieee80211_vif_type_p2p(vif)))1439 return -EIO;1440 1441 return iwl_mvm_mac_ctx_send(mvm, vif, FW_CTXT_ACTION_MODIFY,1442 force_assoc_off, bssid_override);1443}1444 1445int iwl_mvm_mac_ctxt_remove(struct iwl_mvm *mvm, struct ieee80211_vif *vif)1446{1447 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);1448 struct iwl_mac_ctx_cmd cmd;1449 int ret;1450 1451 if (WARN_ONCE(!mvmvif->uploaded, "Removing inactive MAC %pM/%d\n",1452 vif->addr, ieee80211_vif_type_p2p(vif)))1453 return -EIO;1454 1455 memset(&cmd, 0, sizeof(cmd));1456 1457 cmd.id_and_color = cpu_to_le32(FW_CMD_ID_AND_COLOR(mvmvif->id,1458 mvmvif->color));1459 cmd.action = cpu_to_le32(FW_CTXT_ACTION_REMOVE);1460 1461 ret = iwl_mvm_mac_ctxt_send_cmd(mvm, &cmd);1462 if (ret)1463 return ret;1464 1465 mvmvif->uploaded = false;1466 1467 if (vif->type == NL80211_IFTYPE_MONITOR) {1468 __clear_bit(IEEE80211_HW_RX_INCLUDES_FCS, mvm->hw->flags);1469 iwl_mvm_dealloc_snif_sta(mvm);1470 }1471 1472 return 0;1473}1474 1475static void iwl_mvm_csa_count_down(struct iwl_mvm *mvm,1476 struct ieee80211_vif *csa_vif, u32 gp2,1477 bool tx_success)1478{1479 struct iwl_mvm_vif *mvmvif =1480 iwl_mvm_vif_from_mac80211(csa_vif);1481 1482 /* Don't start to countdown from a failed beacon */1483 if (!tx_success && !mvmvif->csa_countdown)1484 return;1485 1486 mvmvif->csa_countdown = true;1487 1488 if (!ieee80211_beacon_cntdwn_is_complete(csa_vif, 0)) {1489 int c = ieee80211_beacon_update_cntdwn(csa_vif, 0);1490 1491 iwl_mvm_mac_ctxt_beacon_changed(mvm, csa_vif,1492 &csa_vif->bss_conf);1493 if (csa_vif->p2p &&1494 !iwl_mvm_te_scheduled(&mvmvif->time_event_data) && gp2 &&1495 tx_success) {1496 u32 rel_time = (c + 1) *1497 csa_vif->bss_conf.beacon_int -1498 IWL_MVM_CHANNEL_SWITCH_TIME_GO;1499 u32 apply_time = gp2 + rel_time * 1024;1500 1501 iwl_mvm_schedule_csa_period(mvm, csa_vif,1502 IWL_MVM_CHANNEL_SWITCH_TIME_GO -1503 IWL_MVM_CHANNEL_SWITCH_MARGIN,1504 apply_time);1505 }1506 } else if (!iwl_mvm_te_scheduled(&mvmvif->time_event_data)) {1507 /* we don't have CSA NoA scheduled yet, switch now */1508 ieee80211_csa_finish(csa_vif, 0);1509 RCU_INIT_POINTER(mvm->csa_vif, NULL);1510 }1511}1512 1513void iwl_mvm_rx_beacon_notif(struct iwl_mvm *mvm,1514 struct iwl_rx_cmd_buffer *rxb)1515{1516 struct iwl_rx_packet *pkt = rxb_addr(rxb);1517 unsigned int pkt_len = iwl_rx_packet_payload_len(pkt);1518 struct iwl_extended_beacon_notif *beacon = (void *)pkt->data;1519 struct iwl_extended_beacon_notif_v5 *beacon_v5 = (void *)pkt->data;1520 struct ieee80211_vif *csa_vif;1521 struct ieee80211_vif *tx_blocked_vif;1522 struct agg_tx_status *agg_status;1523 u16 status;1524 1525 lockdep_assert_held(&mvm->mutex);1526 1527 mvm->ap_last_beacon_gp2 = le32_to_cpu(beacon->gp2);1528 1529 if (!iwl_mvm_is_short_beacon_notif_supported(mvm)) {1530 struct iwl_tx_resp *beacon_notify_hdr =1531 &beacon_v5->beacon_notify_hdr;1532 1533 if (unlikely(pkt_len < sizeof(*beacon_v5)))1534 return;1535 1536 mvm->ibss_manager = beacon_v5->ibss_mgr_status != 0;1537 agg_status = iwl_mvm_get_agg_status(mvm, beacon_notify_hdr);1538 status = le16_to_cpu(agg_status->status) & TX_STATUS_MSK;1539 IWL_DEBUG_RX(mvm,1540 "beacon status %#x retries:%d tsf:0x%016llX gp2:0x%X rate:%d\n",1541 status, beacon_notify_hdr->failure_frame,1542 le64_to_cpu(beacon->tsf),1543 mvm->ap_last_beacon_gp2,1544 le32_to_cpu(beacon_notify_hdr->initial_rate));1545 } else {1546 if (unlikely(pkt_len < sizeof(*beacon)))1547 return;1548 1549 mvm->ibss_manager = beacon->ibss_mgr_status != 0;1550 status = le32_to_cpu(beacon->status) & TX_STATUS_MSK;1551 IWL_DEBUG_RX(mvm,1552 "beacon status %#x tsf:0x%016llX gp2:0x%X\n",1553 status, le64_to_cpu(beacon->tsf),1554 mvm->ap_last_beacon_gp2);1555 }1556 1557 csa_vif = rcu_dereference_protected(mvm->csa_vif,1558 lockdep_is_held(&mvm->mutex));1559 if (unlikely(csa_vif && csa_vif->bss_conf.csa_active))1560 iwl_mvm_csa_count_down(mvm, csa_vif, mvm->ap_last_beacon_gp2,1561 (status == TX_STATUS_SUCCESS));1562 1563 tx_blocked_vif = rcu_dereference_protected(mvm->csa_tx_blocked_vif,1564 lockdep_is_held(&mvm->mutex));1565 if (unlikely(tx_blocked_vif)) {1566 struct iwl_mvm_vif *mvmvif =1567 iwl_mvm_vif_from_mac80211(tx_blocked_vif);1568 1569 /*1570 * The channel switch is started and we have blocked the1571 * stations. If this is the first beacon (the timeout wasn't1572 * set), set the unblock timeout, otherwise countdown1573 */1574 if (!mvm->csa_tx_block_bcn_timeout)1575 mvm->csa_tx_block_bcn_timeout =1576 IWL_MVM_CS_UNBLOCK_TX_TIMEOUT;1577 else1578 mvm->csa_tx_block_bcn_timeout--;1579 1580 /* Check if the timeout is expired, and unblock tx */1581 if (mvm->csa_tx_block_bcn_timeout == 0) {1582 iwl_mvm_modify_all_sta_disable_tx(mvm, mvmvif, false);1583 RCU_INIT_POINTER(mvm->csa_tx_blocked_vif, NULL);1584 }1585 }1586}1587 1588static void1589iwl_mvm_handle_missed_beacons_notif(struct iwl_mvm *mvm,1590 const struct iwl_missed_beacons_notif *mb,1591 struct iwl_rx_packet *pkt)1592{1593 struct iwl_fw_dbg_trigger_missed_bcon *bcon_trig;1594 struct iwl_fw_dbg_trigger_tlv *trigger;1595 u32 stop_trig_missed_bcon, stop_trig_missed_bcon_since_rx;1596 u32 rx_missed_bcon, rx_missed_bcon_since_rx;1597 struct ieee80211_vif *vif;1598 /* Id can be mac/link id depending on the notification version */1599 u32 id = le32_to_cpu(mb->link_id);1600 union iwl_dbg_tlv_tp_data tp_data = { .fw_pkt = pkt };1601 u32 mac_type;1602 int link_id = -1;1603 u8 notif_ver = iwl_fw_lookup_notif_ver(mvm->fw, LEGACY_GROUP,1604 MISSED_BEACONS_NOTIFICATION,1605 0);1606 u8 new_notif_ver = iwl_fw_lookup_notif_ver(mvm->fw, MAC_CONF_GROUP,1607 MISSED_BEACONS_NOTIF, 0);1608 1609 /* If the firmware uses the new notification (from MAC_CONF_GROUP),1610 * refer to that notification's version.1611 * Note that the new notification from MAC_CONF_GROUP starts from1612 * version 5.1613 */1614 if (new_notif_ver)1615 notif_ver = new_notif_ver;1616 1617 /* before version four the ID in the notification refers to mac ID */1618 if (notif_ver < 4) {1619 vif = iwl_mvm_rcu_dereference_vif_id(mvm, id, false);1620 } else {1621 struct ieee80211_bss_conf *bss_conf =1622 iwl_mvm_rcu_fw_link_id_to_link_conf(mvm, id, false);1623 1624 if (!bss_conf)1625 return;1626 1627 vif = bss_conf->vif;1628 link_id = bss_conf->link_id;1629 }1630 1631 IWL_DEBUG_INFO(mvm,1632 "missed bcn %s_id=%u, consecutive=%u (%u)\n",1633 notif_ver < 4 ? "mac" : "link",1634 id,1635 le32_to_cpu(mb->consec_missed_beacons),1636 le32_to_cpu(mb->consec_missed_beacons_since_last_rx));1637 1638 if (!vif)1639 return;1640 1641 mac_type = iwl_mvm_get_mac_type(vif);1642 1643 IWL_DEBUG_INFO(mvm, "missed beacon mac_type=%u,\n", mac_type);1644 1645 mvm->trans->dbg.dump_file_name_ext_valid = true;1646 snprintf(mvm->trans->dbg.dump_file_name_ext, IWL_FW_INI_MAX_NAME,1647 "MacId_%d_MacType_%d", id, mac_type);1648 1649 rx_missed_bcon = le32_to_cpu(mb->consec_missed_beacons);1650 rx_missed_bcon_since_rx =1651 le32_to_cpu(mb->consec_missed_beacons_since_last_rx);1652 /*1653 * TODO: the threshold should be adjusted based on latency conditions,1654 * and/or in case of a CS flow on one of the other AP vifs.1655 */1656 if (rx_missed_bcon >= IWL_MVM_MISSED_BEACONS_THRESHOLD_LONG) {1657 if (rx_missed_bcon_since_rx >= IWL_MVM_MISSED_BEACONS_SINCE_RX_THOLD) {1658 iwl_mvm_connection_loss(mvm, vif, "missed beacons");1659 } else {1660 IWL_WARN(mvm,1661 "missed beacons exceeds threshold, but receiving data. Stay connected, Expect bugs.\n");1662 IWL_WARN(mvm,1663 "missed_beacons:%d, missed_beacons_since_rx:%d\n",1664 rx_missed_bcon, rx_missed_bcon_since_rx);1665 }1666 } else if (link_id >= 0 && hweight16(vif->active_links) > 1) {1667 u32 scnd_lnk_bcn_lost = 0;1668 1669 if (notif_ver >= 5 &&1670 !IWL_FW_CHECK(mvm,1671 le32_to_cpu(mb->other_link_id) == IWL_MVM_FW_LINK_ID_INVALID,1672 "No data for other link id but we are in EMLSR active_links: 0x%x\n",1673 vif->active_links))1674 scnd_lnk_bcn_lost =1675 le32_to_cpu(mb->consec_missed_beacons_other_link);1676 1677 /* Exit EMLSR if we lost more than1678 * IWL_MVM_MISSED_BEACONS_EXIT_ESR_THRESH beacons on boths links1679 * OR more than IWL_MVM_BCN_LOSS_EXIT_ESR_THRESH on any link.1680 */1681 if ((rx_missed_bcon >= IWL_MVM_BCN_LOSS_EXIT_ESR_THRESH_2_LINKS &&1682 scnd_lnk_bcn_lost >= IWL_MVM_BCN_LOSS_EXIT_ESR_THRESH_2_LINKS) ||1683 rx_missed_bcon >= IWL_MVM_BCN_LOSS_EXIT_ESR_THRESH)1684 iwl_mvm_exit_esr(mvm, vif,1685 IWL_MVM_ESR_EXIT_MISSED_BEACON,1686 iwl_mvm_get_primary_link(vif));1687 } else if (rx_missed_bcon_since_rx > IWL_MVM_MISSED_BEACONS_THRESHOLD) {1688 if (!iwl_mvm_has_new_tx_api(mvm))1689 ieee80211_beacon_loss(vif);1690 else1691 ieee80211_cqm_beacon_loss_notify(vif, GFP_ATOMIC);1692 }1693 1694 iwl_dbg_tlv_time_point(&mvm->fwrt,1695 IWL_FW_INI_TIME_POINT_MISSED_BEACONS, &tp_data);1696 1697 trigger = iwl_fw_dbg_trigger_on(&mvm->fwrt, ieee80211_vif_to_wdev(vif),1698 FW_DBG_TRIGGER_MISSED_BEACONS);1699 if (!trigger)1700 return;1701 1702 bcon_trig = (void *)trigger->data;1703 stop_trig_missed_bcon = le32_to_cpu(bcon_trig->stop_consec_missed_bcon);1704 stop_trig_missed_bcon_since_rx =1705 le32_to_cpu(bcon_trig->stop_consec_missed_bcon_since_rx);1706 1707 /* TODO: implement start trigger */1708 1709 if (rx_missed_bcon_since_rx >= stop_trig_missed_bcon_since_rx ||1710 rx_missed_bcon >= stop_trig_missed_bcon)1711 iwl_fw_dbg_collect_trig(&mvm->fwrt, trigger, NULL);1712}1713 1714void iwl_mvm_rx_missed_beacons_notif(struct iwl_mvm *mvm,1715 struct iwl_rx_cmd_buffer *rxb)1716{1717 struct iwl_rx_packet *pkt = rxb_addr(rxb);1718 1719 iwl_mvm_handle_missed_beacons_notif(mvm, (const void *)pkt->data, pkt);1720}1721 1722void iwl_mvm_rx_missed_beacons_notif_legacy(struct iwl_mvm *mvm,1723 struct iwl_rx_cmd_buffer *rxb)1724{1725 struct iwl_rx_packet *pkt = rxb_addr(rxb);1726 const struct iwl_missed_beacons_notif_v4 *mb_v4 =1727 (const void *)pkt->data;1728 struct iwl_missed_beacons_notif mb = {1729 .link_id = mb_v4->link_id,1730 .consec_missed_beacons = mb_v4->consec_missed_beacons,1731 .consec_missed_beacons_since_last_rx =1732 mb_v4->consec_missed_beacons_since_last_rx,1733 .other_link_id = cpu_to_le32(IWL_MVM_FW_LINK_ID_INVALID),1734 };1735 1736 iwl_mvm_handle_missed_beacons_notif(mvm, &mb, pkt);1737}1738 1739void iwl_mvm_rx_stored_beacon_notif(struct iwl_mvm *mvm,1740 struct iwl_rx_cmd_buffer *rxb)1741{1742 struct iwl_rx_packet *pkt = rxb_addr(rxb);1743 unsigned int pkt_len = iwl_rx_packet_payload_len(pkt);1744 struct iwl_stored_beacon_notif_common *sb = (void *)pkt->data;1745 struct ieee80211_rx_status rx_status;1746 struct sk_buff *skb;1747 u8 *data;1748 u32 size = le32_to_cpu(sb->byte_count);1749 int ver = iwl_fw_lookup_cmd_ver(mvm->fw,1750 WIDE_ID(PROT_OFFLOAD_GROUP, STORED_BEACON_NTF),1751 0);1752 1753 if (size == 0)1754 return;1755 1756 /* handle per-version differences */1757 if (ver <= 2) {1758 struct iwl_stored_beacon_notif_v2 *sb_v2 = (void *)pkt->data;1759 1760 if (pkt_len < struct_size(sb_v2, data, size))1761 return;1762 1763 data = sb_v2->data;1764 } else {1765 struct iwl_stored_beacon_notif_v3 *sb_v3 = (void *)pkt->data;1766 1767 if (pkt_len < struct_size(sb_v3, data, size))1768 return;1769 1770 data = sb_v3->data;1771 }1772 1773 skb = alloc_skb(size, GFP_ATOMIC);1774 if (!skb) {1775 IWL_ERR(mvm, "alloc_skb failed\n");1776 return;1777 }1778 1779 /* update rx_status according to the notification's metadata */1780 memset(&rx_status, 0, sizeof(rx_status));1781 rx_status.mactime = le64_to_cpu(sb->tsf);1782 /* TSF as indicated by the firmware is at INA time */1783 rx_status.flag |= RX_FLAG_MACTIME_PLCP_START;1784 rx_status.device_timestamp = le32_to_cpu(sb->system_time);1785 rx_status.band =1786 (sb->band & cpu_to_le16(RX_RES_PHY_FLAGS_BAND_24)) ?1787 NL80211_BAND_2GHZ : NL80211_BAND_5GHZ;1788 rx_status.freq =1789 ieee80211_channel_to_frequency(le16_to_cpu(sb->channel),1790 rx_status.band);1791 1792 /* copy the data */1793 skb_put_data(skb, data, size);1794 memcpy(IEEE80211_SKB_RXCB(skb), &rx_status, sizeof(rx_status));1795 1796 /* pass it as regular rx to mac80211 */1797 ieee80211_rx_napi(mvm->hw, NULL, skb, NULL);1798}1799 1800void iwl_mvm_probe_resp_data_notif(struct iwl_mvm *mvm,1801 struct iwl_rx_cmd_buffer *rxb)1802{1803 struct iwl_rx_packet *pkt = rxb_addr(rxb);1804 struct iwl_probe_resp_data_notif *notif = (void *)pkt->data;1805 struct iwl_probe_resp_data *old_data, *new_data;1806 u32 id = le32_to_cpu(notif->mac_id);1807 struct ieee80211_vif *vif;1808 struct iwl_mvm_vif *mvmvif;1809 1810 IWL_DEBUG_INFO(mvm, "Probe response data notif: noa %d, csa %d\n",1811 notif->noa_active, notif->csa_counter);1812 1813 vif = iwl_mvm_rcu_dereference_vif_id(mvm, id, false);1814 if (!vif)1815 return;1816 1817 mvmvif = iwl_mvm_vif_from_mac80211(vif);1818 1819 new_data = kzalloc(sizeof(*new_data), GFP_KERNEL);1820 if (!new_data)1821 return;1822 1823 memcpy(&new_data->notif, notif, sizeof(new_data->notif));1824 1825 /* noa_attr contains 1 reserved byte, need to substruct it */1826 new_data->noa_len = sizeof(struct ieee80211_vendor_ie) +1827 sizeof(new_data->notif.noa_attr) - 1;1828 1829 /*1830 * If it's a one time NoA, only one descriptor is needed,1831 * adjust the length according to len_low.1832 */1833 if (new_data->notif.noa_attr.len_low ==1834 sizeof(struct ieee80211_p2p_noa_desc) + 2)1835 new_data->noa_len -= sizeof(struct ieee80211_p2p_noa_desc);1836 1837 old_data = rcu_dereference_protected(mvmvif->deflink.probe_resp_data,1838 lockdep_is_held(&mvmvif->mvm->mutex));1839 rcu_assign_pointer(mvmvif->deflink.probe_resp_data, new_data);1840 1841 if (old_data)1842 kfree_rcu(old_data, rcu_head);1843 1844 if (notif->csa_counter != IWL_PROBE_RESP_DATA_NO_CSA &&1845 notif->csa_counter >= 1)1846 ieee80211_beacon_set_cntdwn(vif, notif->csa_counter);1847}1848 1849void iwl_mvm_channel_switch_start_notif(struct iwl_mvm *mvm,1850 struct iwl_rx_cmd_buffer *rxb)1851{1852 struct iwl_rx_packet *pkt = rxb_addr(rxb);1853 struct ieee80211_vif *csa_vif, *vif;1854 struct iwl_mvm_vif *mvmvif, *csa_mvmvif;1855 u32 id_n_color, csa_id;1856 /* save mac_id or link_id to use later to cancel csa if needed */1857 u32 id;1858 u32 mac_link_id = 0;1859 u8 notif_ver = iwl_fw_lookup_notif_ver(mvm->fw, MAC_CONF_GROUP,1860 CHANNEL_SWITCH_START_NOTIF, 0);1861 bool csa_active;1862 1863 rcu_read_lock();1864 1865 if (notif_ver < 3) {1866 struct iwl_channel_switch_start_notif_v1 *notif = (void *)pkt->data;1867 u32 mac_id;1868 1869 id_n_color = le32_to_cpu(notif->id_and_color);1870 mac_id = id_n_color & FW_CTXT_ID_MSK;1871 1872 vif = iwl_mvm_rcu_dereference_vif_id(mvm, mac_id, true);1873 if (!vif)1874 goto out_unlock;1875 1876 id = mac_id;1877 csa_active = vif->bss_conf.csa_active;1878 } else {1879 struct iwl_channel_switch_start_notif *notif = (void *)pkt->data;1880 u32 link_id = le32_to_cpu(notif->link_id);1881 struct ieee80211_bss_conf *bss_conf =1882 iwl_mvm_rcu_fw_link_id_to_link_conf(mvm, link_id, true);1883 1884 if (!bss_conf)1885 goto out_unlock;1886 1887 id = link_id;1888 mac_link_id = bss_conf->link_id;1889 vif = bss_conf->vif;1890 csa_active = bss_conf->csa_active;1891 }1892 1893 mvmvif = iwl_mvm_vif_from_mac80211(vif);1894 if (notif_ver >= 3)1895 id_n_color = FW_CMD_ID_AND_COLOR(mvmvif->id, mvmvif->color);1896 1897 switch (vif->type) {1898 case NL80211_IFTYPE_AP:1899 csa_vif = rcu_dereference(mvm->csa_vif);1900 if (WARN_ON(!csa_vif || !csa_vif->bss_conf.csa_active ||1901 csa_vif != vif))1902 goto out_unlock;1903 1904 csa_mvmvif = iwl_mvm_vif_from_mac80211(csa_vif);1905 csa_id = FW_CMD_ID_AND_COLOR(csa_mvmvif->id, csa_mvmvif->color);1906 if (WARN(csa_id != id_n_color,1907 "channel switch noa notification on unexpected vif (csa_vif=%d, notif=%d)",1908 csa_id, id_n_color))1909 goto out_unlock;1910 1911 IWL_DEBUG_INFO(mvm, "Channel Switch Started Notification\n");1912 1913 schedule_delayed_work(&mvm->cs_tx_unblock_dwork,1914 msecs_to_jiffies(IWL_MVM_CS_UNBLOCK_TX_TIMEOUT *1915 csa_vif->bss_conf.beacon_int));1916 1917 ieee80211_csa_finish(csa_vif, 0);1918 1919 rcu_read_unlock();1920 1921 RCU_INIT_POINTER(mvm->csa_vif, NULL);1922 return;1923 case NL80211_IFTYPE_STATION:1924 /*1925 * if we don't know about an ongoing channel switch,1926 * make sure FW cancels it1927 */1928 if (iwl_fw_lookup_notif_ver(mvm->fw, MAC_CONF_GROUP,1929 CHANNEL_SWITCH_ERROR_NOTIF,1930 0) && !csa_active) {1931 IWL_DEBUG_INFO(mvm, "Channel Switch was canceled\n");1932 iwl_mvm_cancel_channel_switch(mvm, vif, id);1933 break;1934 }1935 1936 iwl_mvm_csa_client_absent(mvm, vif);1937 cancel_delayed_work(&mvmvif->csa_work);1938 ieee80211_chswitch_done(vif, true, mac_link_id);1939 break;1940 default:1941 /* should never happen */1942 WARN_ON_ONCE(1);1943 break;1944 }1945out_unlock:1946 rcu_read_unlock();1947}1948 1949void iwl_mvm_channel_switch_error_notif(struct iwl_mvm *mvm,1950 struct iwl_rx_cmd_buffer *rxb)1951{1952 struct iwl_rx_packet *pkt = rxb_addr(rxb);1953 struct iwl_channel_switch_error_notif *notif = (void *)pkt->data;1954 struct ieee80211_vif *vif;1955 u32 id = le32_to_cpu(notif->link_id);1956 u32 csa_err_mask = le32_to_cpu(notif->csa_err_mask);1957 1958 rcu_read_lock();1959 vif = iwl_mvm_rcu_dereference_vif_id(mvm, id, true);1960 if (!vif) {1961 rcu_read_unlock();1962 return;1963 }1964 1965 IWL_DEBUG_INFO(mvm, "FW reports CSA error: id=%u, csa_err_mask=%u\n",1966 id, csa_err_mask);1967 if (csa_err_mask & (CS_ERR_COUNT_ERROR |1968 CS_ERR_LONG_DELAY_AFTER_CS |1969 CS_ERR_TX_BLOCK_TIMER_EXPIRED))1970 ieee80211_channel_switch_disconnect(vif, true);1971 rcu_read_unlock();1972}1973 1974void iwl_mvm_rx_missed_vap_notif(struct iwl_mvm *mvm,1975 struct iwl_rx_cmd_buffer *rxb)1976{1977 struct iwl_rx_packet *pkt = rxb_addr(rxb);1978 struct iwl_missed_vap_notif *mb = (void *)pkt->data;1979 struct ieee80211_vif *vif;1980 u32 id = le32_to_cpu(mb->mac_id);1981 1982 IWL_DEBUG_INFO(mvm,1983 "missed_vap notify mac_id=%u, num_beacon_intervals_elapsed=%u, profile_periodicity=%u\n",1984 le32_to_cpu(mb->mac_id),1985 mb->num_beacon_intervals_elapsed,1986 mb->profile_periodicity);1987 1988 rcu_read_lock();1989 1990 vif = iwl_mvm_rcu_dereference_vif_id(mvm, id, true);1991 if (vif)1992 iwl_mvm_connection_loss(mvm, vif, "missed vap beacon");1993 1994 rcu_read_unlock();1995}1996