1 // SPDX-License-Identifier: GPL-2.0 OR BSD-3-Clause 2 /* 3 * Copyright (C) 2012-2015, 2018-2022 Intel Corporation 4 * Copyright (C) 2013-2015 Intel Mobile Communications GmbH 5 * Copyright (C) 2016-2017 Intel Deutschland GmbH 6 */ 7 #include <net/mac80211.h> 8 9 #include "mvm.h" 10 #include "sta.h" 11 #include "rs.h" 12 13 /* 14 * New version of ADD_STA_sta command added new fields at the end of the 15 * structure, so sending the size of the relevant API's structure is enough to 16 * support both API versions. 17 */ 18 static inline int iwl_mvm_add_sta_cmd_size(struct iwl_mvm *mvm) 19 { 20 if (iwl_mvm_has_new_rx_api(mvm) || 21 fw_has_api(&mvm->fw->ucode_capa, IWL_UCODE_TLV_API_STA_TYPE)) 22 return sizeof(struct iwl_mvm_add_sta_cmd); 23 else 24 return sizeof(struct iwl_mvm_add_sta_cmd_v7); 25 } 26 27 int iwl_mvm_find_free_sta_id(struct iwl_mvm *mvm, enum nl80211_iftype iftype) 28 { 29 int sta_id; 30 u32 reserved_ids = 0; 31 32 BUILD_BUG_ON(IWL_MVM_STATION_COUNT_MAX > 32); 33 WARN_ON_ONCE(test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status)); 34 35 lockdep_assert_held(&mvm->mutex); 36 37 /* d0i3/d3 assumes the AP's sta_id (of sta vif) is 0. reserve it. */ 38 if (iftype != NL80211_IFTYPE_STATION) 39 reserved_ids = BIT(0); 40 41 /* Don't take rcu_read_lock() since we are protected by mvm->mutex */ 42 for (sta_id = 0; sta_id < mvm->fw->ucode_capa.num_stations; sta_id++) { 43 if (BIT(sta_id) & reserved_ids) 44 continue; 45 46 if (!rcu_dereference_protected(mvm->fw_id_to_mac_id[sta_id], 47 lockdep_is_held(&mvm->mutex))) 48 return sta_id; 49 } 50 return IWL_MVM_INVALID_STA; 51 } 52 53 /* Calculate the ampdu density and max size */ 54 u32 iwl_mvm_get_sta_ampdu_dens(struct ieee80211_link_sta *link_sta, 55 struct ieee80211_bss_conf *link_conf, 56 u32 *_agg_size) 57 { 58 u32 agg_size = 0, mpdu_dens = 0; 59 60 if (WARN_ON(!link_sta)) 61 return 0; 62 63 if (link_sta->ht_cap.ht_supported) 64 mpdu_dens = link_sta->ht_cap.ampdu_density; 65 66 if (link_conf->chandef.chan->band == 67 NL80211_BAND_6GHZ) { 68 mpdu_dens = le16_get_bits(link_sta->he_6ghz_capa.capa, 69 IEEE80211_HE_6GHZ_CAP_MIN_MPDU_START); 70 agg_size = le16_get_bits(link_sta->he_6ghz_capa.capa, 71 IEEE80211_HE_6GHZ_CAP_MAX_AMPDU_LEN_EXP); 72 } else if (link_sta->vht_cap.vht_supported) { 73 agg_size = link_sta->vht_cap.cap & 74 IEEE80211_VHT_CAP_MAX_A_MPDU_LENGTH_EXPONENT_MASK; 75 agg_size >>= 76 IEEE80211_VHT_CAP_MAX_A_MPDU_LENGTH_EXPONENT_SHIFT; 77 } else if (link_sta->ht_cap.ht_supported) { 78 agg_size = link_sta->ht_cap.ampdu_factor; 79 } 80 81 /* D6.0 10.12.2 A-MPDU length limit rules 82 * A STA indicates the maximum length of the A-MPDU preEOF padding 83 * that it can receive in an HE PPDU in the Maximum A-MPDU Length 84 * Exponent field in its HT Capabilities, VHT Capabilities, 85 * and HE 6 GHz Band Capabilities elements (if present) and the 86 * Maximum AMPDU Length Exponent Extension field in its HE 87 * Capabilities element 88 */ 89 if (link_sta->he_cap.has_he) 90 agg_size += 91 u8_get_bits(link_sta->he_cap.he_cap_elem.mac_cap_info[3], 92 IEEE80211_HE_MAC_CAP3_MAX_AMPDU_LEN_EXP_MASK); 93 94 /* Limit to max A-MPDU supported by FW */ 95 if (agg_size > (STA_FLG_MAX_AGG_SIZE_4M >> STA_FLG_MAX_AGG_SIZE_SHIFT)) 96 agg_size = (STA_FLG_MAX_AGG_SIZE_4M >> 97 STA_FLG_MAX_AGG_SIZE_SHIFT); 98 99 *_agg_size = agg_size; 100 return mpdu_dens; 101 } 102 103 u8 iwl_mvm_get_sta_uapsd_acs(struct ieee80211_sta *sta) 104 { 105 u8 uapsd_acs = 0; 106 107 if (sta->uapsd_queues & IEEE80211_WMM_IE_STA_QOSINFO_AC_BK) 108 uapsd_acs |= BIT(AC_BK); 109 if (sta->uapsd_queues & IEEE80211_WMM_IE_STA_QOSINFO_AC_BE) 110 uapsd_acs |= BIT(AC_BE); 111 if (sta->uapsd_queues & IEEE80211_WMM_IE_STA_QOSINFO_AC_VI) 112 uapsd_acs |= BIT(AC_VI); 113 if (sta->uapsd_queues & IEEE80211_WMM_IE_STA_QOSINFO_AC_VO) 114 uapsd_acs |= BIT(AC_VO); 115 116 return uapsd_acs | uapsd_acs << 4; 117 } 118 119 /* send station add/update command to firmware */ 120 int iwl_mvm_sta_send_to_fw(struct iwl_mvm *mvm, struct ieee80211_sta *sta, 121 bool update, unsigned int flags) 122 { 123 struct iwl_mvm_sta *mvm_sta = iwl_mvm_sta_from_mac80211(sta); 124 struct iwl_mvm_add_sta_cmd add_sta_cmd = { 125 .sta_id = mvm_sta->deflink.sta_id, 126 .mac_id_n_color = cpu_to_le32(mvm_sta->mac_id_n_color), 127 .add_modify = update ? 1 : 0, 128 .station_flags_msk = cpu_to_le32(STA_FLG_FAT_EN_MSK | 129 STA_FLG_MIMO_EN_MSK | 130 STA_FLG_RTS_MIMO_PROT), 131 .tid_disable_tx = cpu_to_le16(mvm_sta->tid_disable_agg), 132 }; 133 int ret; 134 u32 status; 135 u32 agg_size = 0, mpdu_dens = 0; 136 137 if (fw_has_api(&mvm->fw->ucode_capa, IWL_UCODE_TLV_API_STA_TYPE)) 138 add_sta_cmd.station_type = mvm_sta->sta_type; 139 140 if (!update || (flags & STA_MODIFY_QUEUES)) { 141 memcpy(&add_sta_cmd.addr, sta->addr, ETH_ALEN); 142 143 if (!iwl_mvm_has_new_tx_api(mvm)) { 144 add_sta_cmd.tfd_queue_msk = 145 cpu_to_le32(mvm_sta->tfd_queue_msk); 146 147 if (flags & STA_MODIFY_QUEUES) 148 add_sta_cmd.modify_mask |= STA_MODIFY_QUEUES; 149 } else { 150 WARN_ON(flags & STA_MODIFY_QUEUES); 151 } 152 } 153 154 switch (sta->deflink.bandwidth) { 155 case IEEE80211_STA_RX_BW_320: 156 case IEEE80211_STA_RX_BW_160: 157 add_sta_cmd.station_flags |= cpu_to_le32(STA_FLG_FAT_EN_160MHZ); 158 fallthrough; 159 case IEEE80211_STA_RX_BW_80: 160 add_sta_cmd.station_flags |= cpu_to_le32(STA_FLG_FAT_EN_80MHZ); 161 fallthrough; 162 case IEEE80211_STA_RX_BW_40: 163 add_sta_cmd.station_flags |= cpu_to_le32(STA_FLG_FAT_EN_40MHZ); 164 fallthrough; 165 case IEEE80211_STA_RX_BW_20: 166 if (sta->deflink.ht_cap.ht_supported) 167 add_sta_cmd.station_flags |= 168 cpu_to_le32(STA_FLG_FAT_EN_20MHZ); 169 break; 170 } 171 172 switch (sta->deflink.rx_nss) { 173 case 1: 174 add_sta_cmd.station_flags |= cpu_to_le32(STA_FLG_MIMO_EN_SISO); 175 break; 176 case 2: 177 add_sta_cmd.station_flags |= cpu_to_le32(STA_FLG_MIMO_EN_MIMO2); 178 break; 179 case 3 ... 8: 180 add_sta_cmd.station_flags |= cpu_to_le32(STA_FLG_MIMO_EN_MIMO3); 181 break; 182 } 183 184 switch (sta->deflink.smps_mode) { 185 case IEEE80211_SMPS_AUTOMATIC: 186 case IEEE80211_SMPS_NUM_MODES: 187 WARN_ON(1); 188 break; 189 case IEEE80211_SMPS_STATIC: 190 /* override NSS */ 191 add_sta_cmd.station_flags &= ~cpu_to_le32(STA_FLG_MIMO_EN_MSK); 192 add_sta_cmd.station_flags |= cpu_to_le32(STA_FLG_MIMO_EN_SISO); 193 break; 194 case IEEE80211_SMPS_DYNAMIC: 195 add_sta_cmd.station_flags |= cpu_to_le32(STA_FLG_RTS_MIMO_PROT); 196 break; 197 case IEEE80211_SMPS_OFF: 198 /* nothing */ 199 break; 200 } 201 202 if (sta->deflink.ht_cap.ht_supported || 203 mvm_sta->vif->bss_conf.chandef.chan->band == NL80211_BAND_6GHZ) 204 add_sta_cmd.station_flags_msk |= 205 cpu_to_le32(STA_FLG_MAX_AGG_SIZE_MSK | 206 STA_FLG_AGG_MPDU_DENS_MSK); 207 208 mpdu_dens = iwl_mvm_get_sta_ampdu_dens(&sta->deflink, 209 &mvm_sta->vif->bss_conf, 210 &agg_size); 211 add_sta_cmd.station_flags |= 212 cpu_to_le32(agg_size << STA_FLG_MAX_AGG_SIZE_SHIFT); 213 add_sta_cmd.station_flags |= 214 cpu_to_le32(mpdu_dens << STA_FLG_AGG_MPDU_DENS_SHIFT); 215 216 if (mvm_sta->sta_state >= IEEE80211_STA_ASSOC) 217 add_sta_cmd.assoc_id = cpu_to_le16(sta->aid); 218 219 if (sta->wme) { 220 add_sta_cmd.modify_mask |= STA_MODIFY_UAPSD_ACS; 221 add_sta_cmd.uapsd_acs = iwl_mvm_get_sta_uapsd_acs(sta); 222 add_sta_cmd.sp_length = sta->max_sp ? sta->max_sp * 2 : 128; 223 } 224 225 status = ADD_STA_SUCCESS; 226 ret = iwl_mvm_send_cmd_pdu_status(mvm, ADD_STA, 227 iwl_mvm_add_sta_cmd_size(mvm), 228 &add_sta_cmd, &status); 229 if (ret) 230 return ret; 231 232 switch (status & IWL_ADD_STA_STATUS_MASK) { 233 case ADD_STA_SUCCESS: 234 IWL_DEBUG_ASSOC(mvm, "ADD_STA PASSED\n"); 235 break; 236 default: 237 ret = -EIO; 238 IWL_ERR(mvm, "ADD_STA failed\n"); 239 break; 240 } 241 242 return ret; 243 } 244 245 static void iwl_mvm_rx_agg_session_expired(struct timer_list *t) 246 { 247 struct iwl_mvm_baid_data *data = 248 from_timer(data, t, session_timer); 249 struct iwl_mvm_baid_data __rcu **rcu_ptr = data->rcu_ptr; 250 struct iwl_mvm_baid_data *ba_data; 251 struct ieee80211_sta *sta; 252 struct iwl_mvm_sta *mvm_sta; 253 unsigned long timeout; 254 unsigned int sta_id; 255 256 rcu_read_lock(); 257 258 ba_data = rcu_dereference(*rcu_ptr); 259 260 if (WARN_ON(!ba_data)) 261 goto unlock; 262 263 if (!ba_data->timeout) 264 goto unlock; 265 266 timeout = ba_data->last_rx + TU_TO_JIFFIES(ba_data->timeout * 2); 267 if (time_is_after_jiffies(timeout)) { 268 mod_timer(&ba_data->session_timer, timeout); 269 goto unlock; 270 } 271 272 /* Timer expired */ 273 sta_id = ffs(ba_data->sta_mask) - 1; /* don't care which one */ 274 sta = rcu_dereference(ba_data->mvm->fw_id_to_mac_id[sta_id]); 275 276 /* 277 * sta should be valid unless the following happens: 278 * The firmware asserts which triggers a reconfig flow, but 279 * the reconfig fails before we set the pointer to sta into 280 * the fw_id_to_mac_id pointer table. Mac80211 can't stop 281 * A-MDPU and hence the timer continues to run. Then, the 282 * timer expires and sta is NULL. 283 */ 284 if (IS_ERR_OR_NULL(sta)) 285 goto unlock; 286 287 mvm_sta = iwl_mvm_sta_from_mac80211(sta); 288 ieee80211_rx_ba_timer_expired(mvm_sta->vif, 289 sta->addr, ba_data->tid); 290 unlock: 291 rcu_read_unlock(); 292 } 293 294 /* Disable aggregations for a bitmap of TIDs for a given station */ 295 static int iwl_mvm_invalidate_sta_queue(struct iwl_mvm *mvm, int queue, 296 unsigned long disable_agg_tids, 297 bool remove_queue) 298 { 299 struct iwl_mvm_add_sta_cmd cmd = {}; 300 struct ieee80211_sta *sta; 301 struct iwl_mvm_sta *mvmsta; 302 u32 status; 303 u8 sta_id; 304 305 if (WARN_ON(iwl_mvm_has_new_tx_api(mvm))) 306 return -EINVAL; 307 308 sta_id = mvm->queue_info[queue].ra_sta_id; 309 310 rcu_read_lock(); 311 312 sta = rcu_dereference(mvm->fw_id_to_mac_id[sta_id]); 313 314 if (WARN_ON_ONCE(IS_ERR_OR_NULL(sta))) { 315 rcu_read_unlock(); 316 return -EINVAL; 317 } 318 319 mvmsta = iwl_mvm_sta_from_mac80211(sta); 320 321 mvmsta->tid_disable_agg |= disable_agg_tids; 322 323 cmd.mac_id_n_color = cpu_to_le32(mvmsta->mac_id_n_color); 324 cmd.sta_id = mvmsta->deflink.sta_id; 325 cmd.add_modify = STA_MODE_MODIFY; 326 cmd.modify_mask = STA_MODIFY_QUEUES; 327 if (disable_agg_tids) 328 cmd.modify_mask |= STA_MODIFY_TID_DISABLE_TX; 329 if (remove_queue) 330 cmd.modify_mask |= STA_MODIFY_QUEUE_REMOVAL; 331 cmd.tfd_queue_msk = cpu_to_le32(mvmsta->tfd_queue_msk); 332 cmd.tid_disable_tx = cpu_to_le16(mvmsta->tid_disable_agg); 333 334 rcu_read_unlock(); 335 336 /* Notify FW of queue removal from the STA queues */ 337 status = ADD_STA_SUCCESS; 338 return iwl_mvm_send_cmd_pdu_status(mvm, ADD_STA, 339 iwl_mvm_add_sta_cmd_size(mvm), 340 &cmd, &status); 341 } 342 343 static int iwl_mvm_disable_txq(struct iwl_mvm *mvm, struct ieee80211_sta *sta, 344 int sta_id, u16 *queueptr, u8 tid) 345 { 346 int queue = *queueptr; 347 struct iwl_scd_txq_cfg_cmd cmd = { 348 .scd_queue = queue, 349 .action = SCD_CFG_DISABLE_QUEUE, 350 }; 351 int ret; 352 353 lockdep_assert_held(&mvm->mutex); 354 355 if (iwl_mvm_has_new_tx_api(mvm)) { 356 if (mvm->sta_remove_requires_queue_remove) { 357 u32 cmd_id = WIDE_ID(DATA_PATH_GROUP, 358 SCD_QUEUE_CONFIG_CMD); 359 struct iwl_scd_queue_cfg_cmd remove_cmd = { 360 .operation = cpu_to_le32(IWL_SCD_QUEUE_REMOVE), 361 .u.remove.sta_mask = cpu_to_le32(BIT(sta_id)), 362 }; 363 364 if (tid == IWL_MAX_TID_COUNT) 365 tid = IWL_MGMT_TID; 366 367 remove_cmd.u.remove.tid = cpu_to_le32(tid); 368 369 ret = iwl_mvm_send_cmd_pdu(mvm, cmd_id, 0, 370 sizeof(remove_cmd), 371 &remove_cmd); 372 } else { 373 ret = 0; 374 } 375 376 iwl_trans_txq_free(mvm->trans, queue); 377 *queueptr = IWL_MVM_INVALID_QUEUE; 378 379 return ret; 380 } 381 382 if (WARN_ON(mvm->queue_info[queue].tid_bitmap == 0)) 383 return 0; 384 385 mvm->queue_info[queue].tid_bitmap &= ~BIT(tid); 386 387 cmd.action = mvm->queue_info[queue].tid_bitmap ? 388 SCD_CFG_ENABLE_QUEUE : SCD_CFG_DISABLE_QUEUE; 389 if (cmd.action == SCD_CFG_DISABLE_QUEUE) 390 mvm->queue_info[queue].status = IWL_MVM_QUEUE_FREE; 391 392 IWL_DEBUG_TX_QUEUES(mvm, 393 "Disabling TXQ #%d tids=0x%x\n", 394 queue, 395 mvm->queue_info[queue].tid_bitmap); 396 397 /* If the queue is still enabled - nothing left to do in this func */ 398 if (cmd.action == SCD_CFG_ENABLE_QUEUE) 399 return 0; 400 401 cmd.sta_id = mvm->queue_info[queue].ra_sta_id; 402 cmd.tid = mvm->queue_info[queue].txq_tid; 403 404 /* Make sure queue info is correct even though we overwrite it */ 405 WARN(mvm->queue_info[queue].tid_bitmap, 406 "TXQ #%d info out-of-sync - tids=0x%x\n", 407 queue, mvm->queue_info[queue].tid_bitmap); 408 409 /* If we are here - the queue is freed and we can zero out these vals */ 410 mvm->queue_info[queue].tid_bitmap = 0; 411 412 if (sta) { 413 struct iwl_mvm_txq *mvmtxq = 414 iwl_mvm_txq_from_tid(sta, tid); 415 416 spin_lock_bh(&mvm->add_stream_lock); 417 list_del_init(&mvmtxq->list); 418 clear_bit(IWL_MVM_TXQ_STATE_READY, &mvmtxq->state); 419 mvmtxq->txq_id = IWL_MVM_INVALID_QUEUE; 420 spin_unlock_bh(&mvm->add_stream_lock); 421 } 422 423 /* Regardless if this is a reserved TXQ for a STA - mark it as false */ 424 mvm->queue_info[queue].reserved = false; 425 426 iwl_trans_txq_disable(mvm->trans, queue, false); 427 ret = iwl_mvm_send_cmd_pdu(mvm, SCD_QUEUE_CFG, 0, 428 sizeof(struct iwl_scd_txq_cfg_cmd), &cmd); 429 430 if (ret) 431 IWL_ERR(mvm, "Failed to disable queue %d (ret=%d)\n", 432 queue, ret); 433 return ret; 434 } 435 436 static int iwl_mvm_get_queue_agg_tids(struct iwl_mvm *mvm, int queue) 437 { 438 struct ieee80211_sta *sta; 439 struct iwl_mvm_sta *mvmsta; 440 unsigned long tid_bitmap; 441 unsigned long agg_tids = 0; 442 u8 sta_id; 443 int tid; 444 445 lockdep_assert_held(&mvm->mutex); 446 447 if (WARN_ON(iwl_mvm_has_new_tx_api(mvm))) 448 return -EINVAL; 449 450 sta_id = mvm->queue_info[queue].ra_sta_id; 451 tid_bitmap = mvm->queue_info[queue].tid_bitmap; 452 453 sta = rcu_dereference_protected(mvm->fw_id_to_mac_id[sta_id], 454 lockdep_is_held(&mvm->mutex)); 455 456 if (WARN_ON_ONCE(IS_ERR_OR_NULL(sta))) 457 return -EINVAL; 458 459 mvmsta = iwl_mvm_sta_from_mac80211(sta); 460 461 spin_lock_bh(&mvmsta->lock); 462 for_each_set_bit(tid, &tid_bitmap, IWL_MAX_TID_COUNT + 1) { 463 if (mvmsta->tid_data[tid].state == IWL_AGG_ON) 464 agg_tids |= BIT(tid); 465 } 466 spin_unlock_bh(&mvmsta->lock); 467 468 return agg_tids; 469 } 470 471 /* 472 * Remove a queue from a station's resources. 473 * Note that this only marks as free. It DOESN'T delete a BA agreement, and 474 * doesn't disable the queue 475 */ 476 static int iwl_mvm_remove_sta_queue_marking(struct iwl_mvm *mvm, int queue) 477 { 478 struct ieee80211_sta *sta; 479 struct iwl_mvm_sta *mvmsta; 480 unsigned long tid_bitmap; 481 unsigned long disable_agg_tids = 0; 482 u8 sta_id; 483 int tid; 484 485 lockdep_assert_held(&mvm->mutex); 486 487 if (WARN_ON(iwl_mvm_has_new_tx_api(mvm))) 488 return -EINVAL; 489 490 sta_id = mvm->queue_info[queue].ra_sta_id; 491 tid_bitmap = mvm->queue_info[queue].tid_bitmap; 492 493 rcu_read_lock(); 494 495 sta = rcu_dereference(mvm->fw_id_to_mac_id[sta_id]); 496 497 if (WARN_ON_ONCE(IS_ERR_OR_NULL(sta))) { 498 rcu_read_unlock(); 499 return 0; 500 } 501 502 mvmsta = iwl_mvm_sta_from_mac80211(sta); 503 504 spin_lock_bh(&mvmsta->lock); 505 /* Unmap MAC queues and TIDs from this queue */ 506 for_each_set_bit(tid, &tid_bitmap, IWL_MAX_TID_COUNT + 1) { 507 struct iwl_mvm_txq *mvmtxq = 508 iwl_mvm_txq_from_tid(sta, tid); 509 510 if (mvmsta->tid_data[tid].state == IWL_AGG_ON) 511 disable_agg_tids |= BIT(tid); 512 mvmsta->tid_data[tid].txq_id = IWL_MVM_INVALID_QUEUE; 513 514 spin_lock_bh(&mvm->add_stream_lock); 515 list_del_init(&mvmtxq->list); 516 clear_bit(IWL_MVM_TXQ_STATE_READY, &mvmtxq->state); 517 mvmtxq->txq_id = IWL_MVM_INVALID_QUEUE; 518 spin_unlock_bh(&mvm->add_stream_lock); 519 } 520 521 mvmsta->tfd_queue_msk &= ~BIT(queue); /* Don't use this queue anymore */ 522 spin_unlock_bh(&mvmsta->lock); 523 524 rcu_read_unlock(); 525 526 /* 527 * The TX path may have been using this TXQ_ID from the tid_data, 528 * so make sure it's no longer running so that we can safely reuse 529 * this TXQ later. We've set all the TIDs to IWL_MVM_INVALID_QUEUE 530 * above, but nothing guarantees we've stopped using them. Thus, 531 * without this, we could get to iwl_mvm_disable_txq() and remove 532 * the queue while still sending frames to it. 533 */ 534 synchronize_net(); 535 536 return disable_agg_tids; 537 } 538 539 static int iwl_mvm_free_inactive_queue(struct iwl_mvm *mvm, int queue, 540 struct ieee80211_sta *old_sta, 541 u8 new_sta_id) 542 { 543 struct iwl_mvm_sta *mvmsta; 544 u8 sta_id, tid; 545 unsigned long disable_agg_tids = 0; 546 bool same_sta; 547 u16 queue_tmp = queue; 548 int ret; 549 550 lockdep_assert_held(&mvm->mutex); 551 552 if (WARN_ON(iwl_mvm_has_new_tx_api(mvm))) 553 return -EINVAL; 554 555 sta_id = mvm->queue_info[queue].ra_sta_id; 556 tid = mvm->queue_info[queue].txq_tid; 557 558 same_sta = sta_id == new_sta_id; 559 560 mvmsta = iwl_mvm_sta_from_staid_protected(mvm, sta_id); 561 if (WARN_ON(!mvmsta)) 562 return -EINVAL; 563 564 disable_agg_tids = iwl_mvm_remove_sta_queue_marking(mvm, queue); 565 /* Disable the queue */ 566 if (disable_agg_tids) 567 iwl_mvm_invalidate_sta_queue(mvm, queue, 568 disable_agg_tids, false); 569 570 ret = iwl_mvm_disable_txq(mvm, old_sta, sta_id, &queue_tmp, tid); 571 if (ret) { 572 IWL_ERR(mvm, 573 "Failed to free inactive queue %d (ret=%d)\n", 574 queue, ret); 575 576 return ret; 577 } 578 579 /* If TXQ is allocated to another STA, update removal in FW */ 580 if (!same_sta) 581 iwl_mvm_invalidate_sta_queue(mvm, queue, 0, true); 582 583 return 0; 584 } 585 586 static int iwl_mvm_get_shared_queue(struct iwl_mvm *mvm, 587 unsigned long tfd_queue_mask, u8 ac) 588 { 589 int queue = 0; 590 u8 ac_to_queue[IEEE80211_NUM_ACS]; 591 int i; 592 593 /* 594 * This protects us against grabbing a queue that's being reconfigured 595 * by the inactivity checker. 596 */ 597 lockdep_assert_held(&mvm->mutex); 598 599 if (WARN_ON(iwl_mvm_has_new_tx_api(mvm))) 600 return -EINVAL; 601 602 memset(&ac_to_queue, IEEE80211_INVAL_HW_QUEUE, sizeof(ac_to_queue)); 603 604 /* See what ACs the existing queues for this STA have */ 605 for_each_set_bit(i, &tfd_queue_mask, IWL_MVM_DQA_MAX_DATA_QUEUE) { 606 /* Only DATA queues can be shared */ 607 if (i < IWL_MVM_DQA_MIN_DATA_QUEUE && 608 i != IWL_MVM_DQA_BSS_CLIENT_QUEUE) 609 continue; 610 611 ac_to_queue[mvm->queue_info[i].mac80211_ac] = i; 612 } 613 614 /* 615 * The queue to share is chosen only from DATA queues as follows (in 616 * descending priority): 617 * 1. An AC_BE queue 618 * 2. Same AC queue 619 * 3. Highest AC queue that is lower than new AC 620 * 4. Any existing AC (there always is at least 1 DATA queue) 621 */ 622 623 /* Priority 1: An AC_BE queue */ 624 if (ac_to_queue[IEEE80211_AC_BE] != IEEE80211_INVAL_HW_QUEUE) 625 queue = ac_to_queue[IEEE80211_AC_BE]; 626 /* Priority 2: Same AC queue */ 627 else if (ac_to_queue[ac] != IEEE80211_INVAL_HW_QUEUE) 628 queue = ac_to_queue[ac]; 629 /* Priority 3a: If new AC is VO and VI exists - use VI */ 630 else if (ac == IEEE80211_AC_VO && 631 ac_to_queue[IEEE80211_AC_VI] != IEEE80211_INVAL_HW_QUEUE) 632 queue = ac_to_queue[IEEE80211_AC_VI]; 633 /* Priority 3b: No BE so only AC less than the new one is BK */ 634 else if (ac_to_queue[IEEE80211_AC_BK] != IEEE80211_INVAL_HW_QUEUE) 635 queue = ac_to_queue[IEEE80211_AC_BK]; 636 /* Priority 4a: No BE nor BK - use VI if exists */ 637 else if (ac_to_queue[IEEE80211_AC_VI] != IEEE80211_INVAL_HW_QUEUE) 638 queue = ac_to_queue[IEEE80211_AC_VI]; 639 /* Priority 4b: No BE, BK nor VI - use VO if exists */ 640 else if (ac_to_queue[IEEE80211_AC_VO] != IEEE80211_INVAL_HW_QUEUE) 641 queue = ac_to_queue[IEEE80211_AC_VO]; 642 643 /* Make sure queue found (or not) is legal */ 644 if (!iwl_mvm_is_dqa_data_queue(mvm, queue) && 645 !iwl_mvm_is_dqa_mgmt_queue(mvm, queue) && 646 (queue != IWL_MVM_DQA_BSS_CLIENT_QUEUE)) { 647 IWL_ERR(mvm, "No DATA queues available to share\n"); 648 return -ENOSPC; 649 } 650 651 return queue; 652 } 653 654 /* Re-configure the SCD for a queue that has already been configured */ 655 static int iwl_mvm_reconfig_scd(struct iwl_mvm *mvm, int queue, int fifo, 656 int sta_id, int tid, int frame_limit, u16 ssn) 657 { 658 struct iwl_scd_txq_cfg_cmd cmd = { 659 .scd_queue = queue, 660 .action = SCD_CFG_ENABLE_QUEUE, 661 .window = frame_limit, 662 .sta_id = sta_id, 663 .ssn = cpu_to_le16(ssn), 664 .tx_fifo = fifo, 665 .aggregate = (queue >= IWL_MVM_DQA_MIN_DATA_QUEUE || 666 queue == IWL_MVM_DQA_BSS_CLIENT_QUEUE), 667 .tid = tid, 668 }; 669 int ret; 670 671 if (WARN_ON(iwl_mvm_has_new_tx_api(mvm))) 672 return -EINVAL; 673 674 if (WARN(mvm->queue_info[queue].tid_bitmap == 0, 675 "Trying to reconfig unallocated queue %d\n", queue)) 676 return -ENXIO; 677 678 IWL_DEBUG_TX_QUEUES(mvm, "Reconfig SCD for TXQ #%d\n", queue); 679 680 ret = iwl_mvm_send_cmd_pdu(mvm, SCD_QUEUE_CFG, 0, sizeof(cmd), &cmd); 681 WARN_ONCE(ret, "Failed to re-configure queue %d on FIFO %d, ret=%d\n", 682 queue, fifo, ret); 683 684 return ret; 685 } 686 687 /* 688 * If a given queue has a higher AC than the TID stream that is being compared 689 * to, the queue needs to be redirected to the lower AC. This function does that 690 * in such a case, otherwise - if no redirection required - it does nothing, 691 * unless the %force param is true. 692 */ 693 static int iwl_mvm_redirect_queue(struct iwl_mvm *mvm, int queue, int tid, 694 int ac, int ssn, unsigned int wdg_timeout, 695 bool force, struct iwl_mvm_txq *txq) 696 { 697 struct iwl_scd_txq_cfg_cmd cmd = { 698 .scd_queue = queue, 699 .action = SCD_CFG_DISABLE_QUEUE, 700 }; 701 bool shared_queue; 702 int ret; 703 704 if (WARN_ON(iwl_mvm_has_new_tx_api(mvm))) 705 return -EINVAL; 706 707 /* 708 * If the AC is lower than current one - FIFO needs to be redirected to 709 * the lowest one of the streams in the queue. Check if this is needed 710 * here. 711 * Notice that the enum ieee80211_ac_numbers is "flipped", so BK is with 712 * value 3 and VO with value 0, so to check if ac X is lower than ac Y 713 * we need to check if the numerical value of X is LARGER than of Y. 714 */ 715 if (ac <= mvm->queue_info[queue].mac80211_ac && !force) { 716 IWL_DEBUG_TX_QUEUES(mvm, 717 "No redirection needed on TXQ #%d\n", 718 queue); 719 return 0; 720 } 721 722 cmd.sta_id = mvm->queue_info[queue].ra_sta_id; 723 cmd.tx_fifo = iwl_mvm_ac_to_tx_fifo[mvm->queue_info[queue].mac80211_ac]; 724 cmd.tid = mvm->queue_info[queue].txq_tid; 725 shared_queue = hweight16(mvm->queue_info[queue].tid_bitmap) > 1; 726 727 IWL_DEBUG_TX_QUEUES(mvm, "Redirecting TXQ #%d to FIFO #%d\n", 728 queue, iwl_mvm_ac_to_tx_fifo[ac]); 729 730 /* Stop the queue and wait for it to empty */ 731 set_bit(IWL_MVM_TXQ_STATE_STOP_REDIRECT, &txq->state); 732 733 ret = iwl_trans_wait_tx_queues_empty(mvm->trans, BIT(queue)); 734 if (ret) { 735 IWL_ERR(mvm, "Error draining queue %d before reconfig\n", 736 queue); 737 ret = -EIO; 738 goto out; 739 } 740 741 /* Before redirecting the queue we need to de-activate it */ 742 iwl_trans_txq_disable(mvm->trans, queue, false); 743 ret = iwl_mvm_send_cmd_pdu(mvm, SCD_QUEUE_CFG, 0, sizeof(cmd), &cmd); 744 if (ret) 745 IWL_ERR(mvm, "Failed SCD disable TXQ %d (ret=%d)\n", queue, 746 ret); 747 748 /* Make sure the SCD wrptr is correctly set before reconfiguring */ 749 iwl_trans_txq_enable_cfg(mvm->trans, queue, ssn, NULL, wdg_timeout); 750 751 /* Update the TID "owner" of the queue */ 752 mvm->queue_info[queue].txq_tid = tid; 753 754 /* TODO: Work-around SCD bug when moving back by multiples of 0x40 */ 755 756 /* Redirect to lower AC */ 757 iwl_mvm_reconfig_scd(mvm, queue, iwl_mvm_ac_to_tx_fifo[ac], 758 cmd.sta_id, tid, IWL_FRAME_LIMIT, ssn); 759 760 /* Update AC marking of the queue */ 761 mvm->queue_info[queue].mac80211_ac = ac; 762 763 /* 764 * Mark queue as shared in transport if shared 765 * Note this has to be done after queue enablement because enablement 766 * can also set this value, and there is no indication there to shared 767 * queues 768 */ 769 if (shared_queue) 770 iwl_trans_txq_set_shared_mode(mvm->trans, queue, true); 771 772 out: 773 /* Continue using the queue */ 774 clear_bit(IWL_MVM_TXQ_STATE_STOP_REDIRECT, &txq->state); 775 776 return ret; 777 } 778 779 static int iwl_mvm_find_free_queue(struct iwl_mvm *mvm, u8 sta_id, 780 u8 minq, u8 maxq) 781 { 782 int i; 783 784 lockdep_assert_held(&mvm->mutex); 785 786 if (WARN(maxq >= mvm->trans->trans_cfg->base_params->num_of_queues, 787 "max queue %d >= num_of_queues (%d)", maxq, 788 mvm->trans->trans_cfg->base_params->num_of_queues)) 789 maxq = mvm->trans->trans_cfg->base_params->num_of_queues - 1; 790 791 /* This should not be hit with new TX path */ 792 if (WARN_ON(iwl_mvm_has_new_tx_api(mvm))) 793 return -ENOSPC; 794 795 /* Start by looking for a free queue */ 796 for (i = minq; i <= maxq; i++) 797 if (mvm->queue_info[i].tid_bitmap == 0 && 798 mvm->queue_info[i].status == IWL_MVM_QUEUE_FREE) 799 return i; 800 801 return -ENOSPC; 802 } 803 804 static int iwl_mvm_get_queue_size(struct ieee80211_sta *sta) 805 { 806 int max_size = IWL_DEFAULT_QUEUE_SIZE; 807 unsigned int link_id; 808 809 /* this queue isn't used for traffic (cab_queue) */ 810 if (!sta) 811 return IWL_MGMT_QUEUE_SIZE; 812 813 rcu_read_lock(); 814 815 for (link_id = 0; link_id < ARRAY_SIZE(sta->link); link_id++) { 816 struct ieee80211_link_sta *link = 817 rcu_dereference(sta->link[link_id]); 818 819 if (!link) 820 continue; 821 822 /* support for 1k ba size */ 823 if (link->eht_cap.has_eht && 824 max_size < IWL_DEFAULT_QUEUE_SIZE_EHT) 825 max_size = IWL_DEFAULT_QUEUE_SIZE_EHT; 826 827 /* support for 256 ba size */ 828 if (link->he_cap.has_he && 829 max_size < IWL_DEFAULT_QUEUE_SIZE_HE) 830 max_size = IWL_DEFAULT_QUEUE_SIZE_HE; 831 } 832 833 rcu_read_unlock(); 834 return max_size; 835 } 836 837 int iwl_mvm_tvqm_enable_txq(struct iwl_mvm *mvm, 838 struct ieee80211_sta *sta, 839 u8 sta_id, u8 tid, unsigned int timeout) 840 { 841 int queue, size; 842 u32 sta_mask = 0; 843 844 if (tid == IWL_MAX_TID_COUNT) { 845 tid = IWL_MGMT_TID; 846 size = max_t(u32, IWL_MGMT_QUEUE_SIZE, 847 mvm->trans->cfg->min_txq_size); 848 } else { 849 size = iwl_mvm_get_queue_size(sta); 850 } 851 852 /* take the min with bc tbl entries allowed */ 853 size = min_t(u32, size, mvm->trans->txqs.bc_tbl_size / sizeof(u16)); 854 855 /* size needs to be power of 2 values for calculating read/write pointers */ 856 size = rounddown_pow_of_two(size); 857 858 if (sta) { 859 struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta); 860 unsigned int link_id; 861 862 for (link_id = 0; 863 link_id < ARRAY_SIZE(mvmsta->link); 864 link_id++) { 865 struct iwl_mvm_link_sta *link = 866 rcu_dereference_protected(mvmsta->link[link_id], 867 lockdep_is_held(&mvm->mutex)); 868 869 if (!link) 870 continue; 871 872 sta_mask |= BIT(link->sta_id); 873 } 874 } else { 875 sta_mask |= BIT(sta_id); 876 } 877 878 if (!sta_mask) 879 return -EINVAL; 880 881 do { 882 queue = iwl_trans_txq_alloc(mvm->trans, 0, sta_mask, 883 tid, size, timeout); 884 885 if (queue < 0) 886 IWL_DEBUG_TX_QUEUES(mvm, 887 "Failed allocating TXQ of size %d for sta mask %x tid %d, ret: %d\n", 888 size, sta_mask, tid, queue); 889 size /= 2; 890 } while (queue < 0 && size >= 16); 891 892 if (queue < 0) 893 return queue; 894 895 IWL_DEBUG_TX_QUEUES(mvm, "Enabling TXQ #%d for sta mask 0x%x tid %d\n", 896 queue, sta_mask, tid); 897 898 return queue; 899 } 900 901 static int iwl_mvm_sta_alloc_queue_tvqm(struct iwl_mvm *mvm, 902 struct ieee80211_sta *sta, u8 ac, 903 int tid) 904 { 905 struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta); 906 struct iwl_mvm_txq *mvmtxq = 907 iwl_mvm_txq_from_tid(sta, tid); 908 unsigned int wdg_timeout = 909 iwl_mvm_get_wd_timeout(mvm, mvmsta->vif, false, false); 910 int queue = -1; 911 912 lockdep_assert_held(&mvm->mutex); 913 914 IWL_DEBUG_TX_QUEUES(mvm, 915 "Allocating queue for sta %d on tid %d\n", 916 mvmsta->deflink.sta_id, tid); 917 queue = iwl_mvm_tvqm_enable_txq(mvm, sta, mvmsta->deflink.sta_id, 918 tid, wdg_timeout); 919 if (queue < 0) 920 return queue; 921 922 mvmtxq->txq_id = queue; 923 mvm->tvqm_info[queue].txq_tid = tid; 924 mvm->tvqm_info[queue].sta_id = mvmsta->deflink.sta_id; 925 926 IWL_DEBUG_TX_QUEUES(mvm, "Allocated queue is %d\n", queue); 927 928 spin_lock_bh(&mvmsta->lock); 929 mvmsta->tid_data[tid].txq_id = queue; 930 spin_unlock_bh(&mvmsta->lock); 931 932 return 0; 933 } 934 935 static bool iwl_mvm_update_txq_mapping(struct iwl_mvm *mvm, 936 struct ieee80211_sta *sta, 937 int queue, u8 sta_id, u8 tid) 938 { 939 bool enable_queue = true; 940 941 /* Make sure this TID isn't already enabled */ 942 if (mvm->queue_info[queue].tid_bitmap & BIT(tid)) { 943 IWL_ERR(mvm, "Trying to enable TXQ %d with existing TID %d\n", 944 queue, tid); 945 return false; 946 } 947 948 /* Update mappings and refcounts */ 949 if (mvm->queue_info[queue].tid_bitmap) 950 enable_queue = false; 951 952 mvm->queue_info[queue].tid_bitmap |= BIT(tid); 953 mvm->queue_info[queue].ra_sta_id = sta_id; 954 955 if (enable_queue) { 956 if (tid != IWL_MAX_TID_COUNT) 957 mvm->queue_info[queue].mac80211_ac = 958 tid_to_mac80211_ac[tid]; 959 else 960 mvm->queue_info[queue].mac80211_ac = IEEE80211_AC_VO; 961 962 mvm->queue_info[queue].txq_tid = tid; 963 } 964 965 if (sta) { 966 struct iwl_mvm_txq *mvmtxq = 967 iwl_mvm_txq_from_tid(sta, tid); 968 969 mvmtxq->txq_id = queue; 970 } 971 972 IWL_DEBUG_TX_QUEUES(mvm, 973 "Enabling TXQ #%d tids=0x%x\n", 974 queue, mvm->queue_info[queue].tid_bitmap); 975 976 return enable_queue; 977 } 978 979 static bool iwl_mvm_enable_txq(struct iwl_mvm *mvm, struct ieee80211_sta *sta, 980 int queue, u16 ssn, 981 const struct iwl_trans_txq_scd_cfg *cfg, 982 unsigned int wdg_timeout) 983 { 984 struct iwl_scd_txq_cfg_cmd cmd = { 985 .scd_queue = queue, 986 .action = SCD_CFG_ENABLE_QUEUE, 987 .window = cfg->frame_limit, 988 .sta_id = cfg->sta_id, 989 .ssn = cpu_to_le16(ssn), 990 .tx_fifo = cfg->fifo, 991 .aggregate = cfg->aggregate, 992 .tid = cfg->tid, 993 }; 994 bool inc_ssn; 995 996 if (WARN_ON(iwl_mvm_has_new_tx_api(mvm))) 997 return false; 998 999 /* Send the enabling command if we need to */ 1000 if (!iwl_mvm_update_txq_mapping(mvm, sta, queue, cfg->sta_id, cfg->tid)) 1001 return false; 1002 1003 inc_ssn = iwl_trans_txq_enable_cfg(mvm->trans, queue, ssn, 1004 NULL, wdg_timeout); 1005 if (inc_ssn) 1006 le16_add_cpu(&cmd.ssn, 1); 1007 1008 WARN(iwl_mvm_send_cmd_pdu(mvm, SCD_QUEUE_CFG, 0, sizeof(cmd), &cmd), 1009 "Failed to configure queue %d on FIFO %d\n", queue, cfg->fifo); 1010 1011 return inc_ssn; 1012 } 1013 1014 static void iwl_mvm_change_queue_tid(struct iwl_mvm *mvm, int queue) 1015 { 1016 struct iwl_scd_txq_cfg_cmd cmd = { 1017 .scd_queue = queue, 1018 .action = SCD_CFG_UPDATE_QUEUE_TID, 1019 }; 1020 int tid; 1021 unsigned long tid_bitmap; 1022 int ret; 1023 1024 lockdep_assert_held(&mvm->mutex); 1025 1026 if (WARN_ON(iwl_mvm_has_new_tx_api(mvm))) 1027 return; 1028 1029 tid_bitmap = mvm->queue_info[queue].tid_bitmap; 1030 1031 if (WARN(!tid_bitmap, "TXQ %d has no tids assigned to it\n", queue)) 1032 return; 1033 1034 /* Find any TID for queue */ 1035 tid = find_first_bit(&tid_bitmap, IWL_MAX_TID_COUNT + 1); 1036 cmd.tid = tid; 1037 cmd.tx_fifo = iwl_mvm_ac_to_tx_fifo[tid_to_mac80211_ac[tid]]; 1038 1039 ret = iwl_mvm_send_cmd_pdu(mvm, SCD_QUEUE_CFG, 0, sizeof(cmd), &cmd); 1040 if (ret) { 1041 IWL_ERR(mvm, "Failed to update owner of TXQ %d (ret=%d)\n", 1042 queue, ret); 1043 return; 1044 } 1045 1046 mvm->queue_info[queue].txq_tid = tid; 1047 IWL_DEBUG_TX_QUEUES(mvm, "Changed TXQ %d ownership to tid %d\n", 1048 queue, tid); 1049 } 1050 1051 static void iwl_mvm_unshare_queue(struct iwl_mvm *mvm, int queue) 1052 { 1053 struct ieee80211_sta *sta; 1054 struct iwl_mvm_sta *mvmsta; 1055 u8 sta_id; 1056 int tid = -1; 1057 unsigned long tid_bitmap; 1058 unsigned int wdg_timeout; 1059 int ssn; 1060 int ret = true; 1061 1062 /* queue sharing is disabled on new TX path */ 1063 if (WARN_ON(iwl_mvm_has_new_tx_api(mvm))) 1064 return; 1065 1066 lockdep_assert_held(&mvm->mutex); 1067 1068 sta_id = mvm->queue_info[queue].ra_sta_id; 1069 tid_bitmap = mvm->queue_info[queue].tid_bitmap; 1070 1071 /* Find TID for queue, and make sure it is the only one on the queue */ 1072 tid = find_first_bit(&tid_bitmap, IWL_MAX_TID_COUNT + 1); 1073 if (tid_bitmap != BIT(tid)) { 1074 IWL_ERR(mvm, "Failed to unshare q %d, active tids=0x%lx\n", 1075 queue, tid_bitmap); 1076 return; 1077 } 1078 1079 IWL_DEBUG_TX_QUEUES(mvm, "Unsharing TXQ %d, keeping tid %d\n", queue, 1080 tid); 1081 1082 sta = rcu_dereference_protected(mvm->fw_id_to_mac_id[sta_id], 1083 lockdep_is_held(&mvm->mutex)); 1084 1085 if (WARN_ON_ONCE(IS_ERR_OR_NULL(sta))) 1086 return; 1087 1088 mvmsta = iwl_mvm_sta_from_mac80211(sta); 1089 wdg_timeout = iwl_mvm_get_wd_timeout(mvm, mvmsta->vif, false, false); 1090 1091 ssn = IEEE80211_SEQ_TO_SN(mvmsta->tid_data[tid].seq_number); 1092 1093 ret = iwl_mvm_redirect_queue(mvm, queue, tid, 1094 tid_to_mac80211_ac[tid], ssn, 1095 wdg_timeout, true, 1096 iwl_mvm_txq_from_tid(sta, tid)); 1097 if (ret) { 1098 IWL_ERR(mvm, "Failed to redirect TXQ %d\n", queue); 1099 return; 1100 } 1101 1102 /* If aggs should be turned back on - do it */ 1103 if (mvmsta->tid_data[tid].state == IWL_AGG_ON) { 1104 struct iwl_mvm_add_sta_cmd cmd = {0}; 1105 1106 mvmsta->tid_disable_agg &= ~BIT(tid); 1107 1108 cmd.mac_id_n_color = cpu_to_le32(mvmsta->mac_id_n_color); 1109 cmd.sta_id = mvmsta->deflink.sta_id; 1110 cmd.add_modify = STA_MODE_MODIFY; 1111 cmd.modify_mask = STA_MODIFY_TID_DISABLE_TX; 1112 cmd.tfd_queue_msk = cpu_to_le32(mvmsta->tfd_queue_msk); 1113 cmd.tid_disable_tx = cpu_to_le16(mvmsta->tid_disable_agg); 1114 1115 ret = iwl_mvm_send_cmd_pdu(mvm, ADD_STA, CMD_ASYNC, 1116 iwl_mvm_add_sta_cmd_size(mvm), &cmd); 1117 if (!ret) { 1118 IWL_DEBUG_TX_QUEUES(mvm, 1119 "TXQ #%d is now aggregated again\n", 1120 queue); 1121 1122 /* Mark queue intenally as aggregating again */ 1123 iwl_trans_txq_set_shared_mode(mvm->trans, queue, false); 1124 } 1125 } 1126 1127 mvm->queue_info[queue].status = IWL_MVM_QUEUE_READY; 1128 } 1129 1130 /* 1131 * Remove inactive TIDs of a given queue. 1132 * If all queue TIDs are inactive - mark the queue as inactive 1133 * If only some the queue TIDs are inactive - unmap them from the queue 1134 * 1135 * Returns %true if all TIDs were removed and the queue could be reused. 1136 */ 1137 static bool iwl_mvm_remove_inactive_tids(struct iwl_mvm *mvm, 1138 struct iwl_mvm_sta *mvmsta, int queue, 1139 unsigned long tid_bitmap, 1140 unsigned long *unshare_queues, 1141 unsigned long *changetid_queues) 1142 { 1143 unsigned int tid; 1144 1145 lockdep_assert_held(&mvmsta->lock); 1146 lockdep_assert_held(&mvm->mutex); 1147 1148 if (WARN_ON(iwl_mvm_has_new_tx_api(mvm))) 1149 return false; 1150 1151 /* Go over all non-active TIDs, incl. IWL_MAX_TID_COUNT (for mgmt) */ 1152 for_each_set_bit(tid, &tid_bitmap, IWL_MAX_TID_COUNT + 1) { 1153 /* If some TFDs are still queued - don't mark TID as inactive */ 1154 if (iwl_mvm_tid_queued(mvm, &mvmsta->tid_data[tid])) 1155 tid_bitmap &= ~BIT(tid); 1156 1157 /* Don't mark as inactive any TID that has an active BA */ 1158 if (mvmsta->tid_data[tid].state != IWL_AGG_OFF) 1159 tid_bitmap &= ~BIT(tid); 1160 } 1161 1162 /* If all TIDs in the queue are inactive - return it can be reused */ 1163 if (tid_bitmap == mvm->queue_info[queue].tid_bitmap) { 1164 IWL_DEBUG_TX_QUEUES(mvm, "Queue %d is inactive\n", queue); 1165 return true; 1166 } 1167 1168 /* 1169 * If we are here, this is a shared queue and not all TIDs timed-out. 1170 * Remove the ones that did. 1171 */ 1172 for_each_set_bit(tid, &tid_bitmap, IWL_MAX_TID_COUNT + 1) { 1173 u16 q_tid_bitmap; 1174 1175 mvmsta->tid_data[tid].txq_id = IWL_MVM_INVALID_QUEUE; 1176 mvm->queue_info[queue].tid_bitmap &= ~BIT(tid); 1177 1178 q_tid_bitmap = mvm->queue_info[queue].tid_bitmap; 1179 1180 /* 1181 * We need to take into account a situation in which a TXQ was 1182 * allocated to TID x, and then turned shared by adding TIDs y 1183 * and z. If TID x becomes inactive and is removed from the TXQ, 1184 * ownership must be given to one of the remaining TIDs. 1185 * This is mainly because if TID x continues - a new queue can't 1186 * be allocated for it as long as it is an owner of another TXQ. 1187 * 1188 * Mark this queue in the right bitmap, we'll send the command 1189 * to the firmware later. 1190 */ 1191 if (!(q_tid_bitmap & BIT(mvm->queue_info[queue].txq_tid))) 1192 set_bit(queue, changetid_queues); 1193 1194 IWL_DEBUG_TX_QUEUES(mvm, 1195 "Removing inactive TID %d from shared Q:%d\n", 1196 tid, queue); 1197 } 1198 1199 IWL_DEBUG_TX_QUEUES(mvm, 1200 "TXQ #%d left with tid bitmap 0x%x\n", queue, 1201 mvm->queue_info[queue].tid_bitmap); 1202 1203 /* 1204 * There may be different TIDs with the same mac queues, so make 1205 * sure all TIDs have existing corresponding mac queues enabled 1206 */ 1207 tid_bitmap = mvm->queue_info[queue].tid_bitmap; 1208 1209 /* If the queue is marked as shared - "unshare" it */ 1210 if (hweight16(mvm->queue_info[queue].tid_bitmap) == 1 && 1211 mvm->queue_info[queue].status == IWL_MVM_QUEUE_SHARED) { 1212 IWL_DEBUG_TX_QUEUES(mvm, "Marking Q:%d for reconfig\n", 1213 queue); 1214 set_bit(queue, unshare_queues); 1215 } 1216 1217 return false; 1218 } 1219 1220 /* 1221 * Check for inactivity - this includes checking if any queue 1222 * can be unshared and finding one (and only one) that can be 1223 * reused. 1224 * This function is also invoked as a sort of clean-up task, 1225 * in which case @alloc_for_sta is IWL_MVM_INVALID_STA. 1226 * 1227 * Returns the queue number, or -ENOSPC. 1228 */ 1229 static int iwl_mvm_inactivity_check(struct iwl_mvm *mvm, u8 alloc_for_sta) 1230 { 1231 unsigned long now = jiffies; 1232 unsigned long unshare_queues = 0; 1233 unsigned long changetid_queues = 0; 1234 int i, ret, free_queue = -ENOSPC; 1235 struct ieee80211_sta *queue_owner = NULL; 1236 1237 lockdep_assert_held(&mvm->mutex); 1238 1239 if (iwl_mvm_has_new_tx_api(mvm)) 1240 return -ENOSPC; 1241 1242 rcu_read_lock(); 1243 1244 /* we skip the CMD queue below by starting at 1 */ 1245 BUILD_BUG_ON(IWL_MVM_DQA_CMD_QUEUE != 0); 1246 1247 for (i = 1; i < IWL_MAX_HW_QUEUES; i++) { 1248 struct ieee80211_sta *sta; 1249 struct iwl_mvm_sta *mvmsta; 1250 u8 sta_id; 1251 int tid; 1252 unsigned long inactive_tid_bitmap = 0; 1253 unsigned long queue_tid_bitmap; 1254 1255 queue_tid_bitmap = mvm->queue_info[i].tid_bitmap; 1256 if (!queue_tid_bitmap) 1257 continue; 1258 1259 /* If TXQ isn't in active use anyway - nothing to do here... */ 1260 if (mvm->queue_info[i].status != IWL_MVM_QUEUE_READY && 1261 mvm->queue_info[i].status != IWL_MVM_QUEUE_SHARED) 1262 continue; 1263 1264 /* Check to see if there are inactive TIDs on this queue */ 1265 for_each_set_bit(tid, &queue_tid_bitmap, 1266 IWL_MAX_TID_COUNT + 1) { 1267 if (time_after(mvm->queue_info[i].last_frame_time[tid] + 1268 IWL_MVM_DQA_QUEUE_TIMEOUT, now)) 1269 continue; 1270 1271 inactive_tid_bitmap |= BIT(tid); 1272 } 1273 1274 /* If all TIDs are active - finish check on this queue */ 1275 if (!inactive_tid_bitmap) 1276 continue; 1277 1278 /* 1279 * If we are here - the queue hadn't been served recently and is 1280 * in use 1281 */ 1282 1283 sta_id = mvm->queue_info[i].ra_sta_id; 1284 sta = rcu_dereference(mvm->fw_id_to_mac_id[sta_id]); 1285 1286 /* 1287 * If the STA doesn't exist anymore, it isn't an error. It could 1288 * be that it was removed since getting the queues, and in this 1289 * case it should've inactivated its queues anyway. 1290 */ 1291 if (IS_ERR_OR_NULL(sta)) 1292 continue; 1293 1294 mvmsta = iwl_mvm_sta_from_mac80211(sta); 1295 1296 spin_lock_bh(&mvmsta->lock); 1297 ret = iwl_mvm_remove_inactive_tids(mvm, mvmsta, i, 1298 inactive_tid_bitmap, 1299 &unshare_queues, 1300 &changetid_queues); 1301 if (ret && free_queue < 0) { 1302 queue_owner = sta; 1303 free_queue = i; 1304 } 1305 /* only unlock sta lock - we still need the queue info lock */ 1306 spin_unlock_bh(&mvmsta->lock); 1307 } 1308 1309 1310 /* Reconfigure queues requiring reconfiguation */ 1311 for_each_set_bit(i, &unshare_queues, IWL_MAX_HW_QUEUES) 1312 iwl_mvm_unshare_queue(mvm, i); 1313 for_each_set_bit(i, &changetid_queues, IWL_MAX_HW_QUEUES) 1314 iwl_mvm_change_queue_tid(mvm, i); 1315 1316 rcu_read_unlock(); 1317 1318 if (free_queue >= 0 && alloc_for_sta != IWL_MVM_INVALID_STA) { 1319 ret = iwl_mvm_free_inactive_queue(mvm, free_queue, queue_owner, 1320 alloc_for_sta); 1321 if (ret) 1322 return ret; 1323 } 1324 1325 return free_queue; 1326 } 1327 1328 static int iwl_mvm_sta_alloc_queue(struct iwl_mvm *mvm, 1329 struct ieee80211_sta *sta, u8 ac, int tid) 1330 { 1331 struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta); 1332 struct iwl_trans_txq_scd_cfg cfg = { 1333 .fifo = iwl_mvm_mac_ac_to_tx_fifo(mvm, ac), 1334 .sta_id = mvmsta->deflink.sta_id, 1335 .tid = tid, 1336 .frame_limit = IWL_FRAME_LIMIT, 1337 }; 1338 unsigned int wdg_timeout = 1339 iwl_mvm_get_wd_timeout(mvm, mvmsta->vif, false, false); 1340 int queue = -1; 1341 u16 queue_tmp; 1342 unsigned long disable_agg_tids = 0; 1343 enum iwl_mvm_agg_state queue_state; 1344 bool shared_queue = false, inc_ssn; 1345 int ssn; 1346 unsigned long tfd_queue_mask; 1347 int ret; 1348 1349 lockdep_assert_held(&mvm->mutex); 1350 1351 if (iwl_mvm_has_new_tx_api(mvm)) 1352 return iwl_mvm_sta_alloc_queue_tvqm(mvm, sta, ac, tid); 1353 1354 spin_lock_bh(&mvmsta->lock); 1355 tfd_queue_mask = mvmsta->tfd_queue_msk; 1356 ssn = IEEE80211_SEQ_TO_SN(mvmsta->tid_data[tid].seq_number); 1357 spin_unlock_bh(&mvmsta->lock); 1358 1359 if (tid == IWL_MAX_TID_COUNT) { 1360 queue = iwl_mvm_find_free_queue(mvm, mvmsta->deflink.sta_id, 1361 IWL_MVM_DQA_MIN_MGMT_QUEUE, 1362 IWL_MVM_DQA_MAX_MGMT_QUEUE); 1363 if (queue >= IWL_MVM_DQA_MIN_MGMT_QUEUE) 1364 IWL_DEBUG_TX_QUEUES(mvm, "Found free MGMT queue #%d\n", 1365 queue); 1366 1367 /* If no such queue is found, we'll use a DATA queue instead */ 1368 } 1369 1370 if ((queue < 0 && mvmsta->reserved_queue != IEEE80211_INVAL_HW_QUEUE) && 1371 (mvm->queue_info[mvmsta->reserved_queue].status == 1372 IWL_MVM_QUEUE_RESERVED)) { 1373 queue = mvmsta->reserved_queue; 1374 mvm->queue_info[queue].reserved = true; 1375 IWL_DEBUG_TX_QUEUES(mvm, "Using reserved queue #%d\n", queue); 1376 } 1377 1378 if (queue < 0) 1379 queue = iwl_mvm_find_free_queue(mvm, mvmsta->deflink.sta_id, 1380 IWL_MVM_DQA_MIN_DATA_QUEUE, 1381 IWL_MVM_DQA_MAX_DATA_QUEUE); 1382 if (queue < 0) { 1383 /* try harder - perhaps kill an inactive queue */ 1384 queue = iwl_mvm_inactivity_check(mvm, mvmsta->deflink.sta_id); 1385 } 1386 1387 /* No free queue - we'll have to share */ 1388 if (queue <= 0) { 1389 queue = iwl_mvm_get_shared_queue(mvm, tfd_queue_mask, ac); 1390 if (queue > 0) { 1391 shared_queue = true; 1392 mvm->queue_info[queue].status = IWL_MVM_QUEUE_SHARED; 1393 } 1394 } 1395 1396 /* 1397 * Mark TXQ as ready, even though it hasn't been fully configured yet, 1398 * to make sure no one else takes it. 1399 * This will allow avoiding re-acquiring the lock at the end of the 1400 * configuration. On error we'll mark it back as free. 1401 */ 1402 if (queue > 0 && !shared_queue) 1403 mvm->queue_info[queue].status = IWL_MVM_QUEUE_READY; 1404 1405 /* This shouldn't happen - out of queues */ 1406 if (WARN_ON(queue <= 0)) { 1407 IWL_ERR(mvm, "No available queues for tid %d on sta_id %d\n", 1408 tid, cfg.sta_id); 1409 return queue; 1410 } 1411 1412 /* 1413 * Actual en/disablement of aggregations is through the ADD_STA HCMD, 1414 * but for configuring the SCD to send A-MPDUs we need to mark the queue 1415 * as aggregatable. 1416 * Mark all DATA queues as allowing to be aggregated at some point 1417 */ 1418 cfg.aggregate = (queue >= IWL_MVM_DQA_MIN_DATA_QUEUE || 1419 queue == IWL_MVM_DQA_BSS_CLIENT_QUEUE); 1420 1421 IWL_DEBUG_TX_QUEUES(mvm, 1422 "Allocating %squeue #%d to sta %d on tid %d\n", 1423 shared_queue ? "shared " : "", queue, 1424 mvmsta->deflink.sta_id, tid); 1425 1426 if (shared_queue) { 1427 /* Disable any open aggs on this queue */ 1428 disable_agg_tids = iwl_mvm_get_queue_agg_tids(mvm, queue); 1429 1430 if (disable_agg_tids) { 1431 IWL_DEBUG_TX_QUEUES(mvm, "Disabling aggs on queue %d\n", 1432 queue); 1433 iwl_mvm_invalidate_sta_queue(mvm, queue, 1434 disable_agg_tids, false); 1435 } 1436 } 1437 1438 inc_ssn = iwl_mvm_enable_txq(mvm, sta, queue, ssn, &cfg, wdg_timeout); 1439 1440 /* 1441 * Mark queue as shared in transport if shared 1442 * Note this has to be done after queue enablement because enablement 1443 * can also set this value, and there is no indication there to shared 1444 * queues 1445 */ 1446 if (shared_queue) 1447 iwl_trans_txq_set_shared_mode(mvm->trans, queue, true); 1448 1449 spin_lock_bh(&mvmsta->lock); 1450 /* 1451 * This looks racy, but it is not. We have only one packet for 1452 * this ra/tid in our Tx path since we stop the Qdisc when we 1453 * need to allocate a new TFD queue. 1454 */ 1455 if (inc_ssn) { 1456 mvmsta->tid_data[tid].seq_number += 0x10; 1457 ssn = (ssn + 1) & IEEE80211_SCTL_SEQ; 1458 } 1459 mvmsta->tid_data[tid].txq_id = queue; 1460 mvmsta->tfd_queue_msk |= BIT(queue); 1461 queue_state = mvmsta->tid_data[tid].state; 1462 1463 if (mvmsta->reserved_queue == queue) 1464 mvmsta->reserved_queue = IEEE80211_INVAL_HW_QUEUE; 1465 spin_unlock_bh(&mvmsta->lock); 1466 1467 if (!shared_queue) { 1468 ret = iwl_mvm_sta_send_to_fw(mvm, sta, true, STA_MODIFY_QUEUES); 1469 if (ret) 1470 goto out_err; 1471 1472 /* If we need to re-enable aggregations... */ 1473 if (queue_state == IWL_AGG_ON) { 1474 ret = iwl_mvm_sta_tx_agg(mvm, sta, tid, queue, true); 1475 if (ret) 1476 goto out_err; 1477 } 1478 } else { 1479 /* Redirect queue, if needed */ 1480 ret = iwl_mvm_redirect_queue(mvm, queue, tid, ac, ssn, 1481 wdg_timeout, false, 1482 iwl_mvm_txq_from_tid(sta, tid)); 1483 if (ret) 1484 goto out_err; 1485 } 1486 1487 return 0; 1488 1489 out_err: 1490 queue_tmp = queue; 1491 iwl_mvm_disable_txq(mvm, sta, mvmsta->deflink.sta_id, &queue_tmp, tid); 1492 1493 return ret; 1494 } 1495 1496 void iwl_mvm_add_new_dqa_stream_wk(struct work_struct *wk) 1497 { 1498 struct iwl_mvm *mvm = container_of(wk, struct iwl_mvm, 1499 add_stream_wk); 1500 1501 mutex_lock(&mvm->mutex); 1502 1503 iwl_mvm_inactivity_check(mvm, IWL_MVM_INVALID_STA); 1504 1505 while (!list_empty(&mvm->add_stream_txqs)) { 1506 struct iwl_mvm_txq *mvmtxq; 1507 struct ieee80211_txq *txq; 1508 u8 tid; 1509 1510 mvmtxq = list_first_entry(&mvm->add_stream_txqs, 1511 struct iwl_mvm_txq, list); 1512 1513 txq = container_of((void *)mvmtxq, struct ieee80211_txq, 1514 drv_priv); 1515 tid = txq->tid; 1516 if (tid == IEEE80211_NUM_TIDS) 1517 tid = IWL_MAX_TID_COUNT; 1518 1519 /* 1520 * We can't really do much here, but if this fails we can't 1521 * transmit anyway - so just don't transmit the frame etc. 1522 * and let them back up ... we've tried our best to allocate 1523 * a queue in the function itself. 1524 */ 1525 if (iwl_mvm_sta_alloc_queue(mvm, txq->sta, txq->ac, tid)) { 1526 spin_lock_bh(&mvm->add_stream_lock); 1527 list_del_init(&mvmtxq->list); 1528 spin_unlock_bh(&mvm->add_stream_lock); 1529 continue; 1530 } 1531 1532 /* now we're ready, any remaining races/concurrency will be 1533 * handled in iwl_mvm_mac_itxq_xmit() 1534 */ 1535 set_bit(IWL_MVM_TXQ_STATE_READY, &mvmtxq->state); 1536 1537 local_bh_disable(); 1538 spin_lock(&mvm->add_stream_lock); 1539 list_del_init(&mvmtxq->list); 1540 spin_unlock(&mvm->add_stream_lock); 1541 1542 iwl_mvm_mac_itxq_xmit(mvm->hw, txq); 1543 local_bh_enable(); 1544 } 1545 1546 mutex_unlock(&mvm->mutex); 1547 } 1548 1549 static int iwl_mvm_reserve_sta_stream(struct iwl_mvm *mvm, 1550 struct ieee80211_sta *sta, 1551 enum nl80211_iftype vif_type) 1552 { 1553 struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta); 1554 int queue; 1555 1556 /* queue reserving is disabled on new TX path */ 1557 if (WARN_ON(iwl_mvm_has_new_tx_api(mvm))) 1558 return 0; 1559 1560 /* run the general cleanup/unsharing of queues */ 1561 iwl_mvm_inactivity_check(mvm, IWL_MVM_INVALID_STA); 1562 1563 /* Make sure we have free resources for this STA */ 1564 if (vif_type == NL80211_IFTYPE_STATION && !sta->tdls && 1565 !mvm->queue_info[IWL_MVM_DQA_BSS_CLIENT_QUEUE].tid_bitmap && 1566 (mvm->queue_info[IWL_MVM_DQA_BSS_CLIENT_QUEUE].status == 1567 IWL_MVM_QUEUE_FREE)) 1568 queue = IWL_MVM_DQA_BSS_CLIENT_QUEUE; 1569 else 1570 queue = iwl_mvm_find_free_queue(mvm, mvmsta->deflink.sta_id, 1571 IWL_MVM_DQA_MIN_DATA_QUEUE, 1572 IWL_MVM_DQA_MAX_DATA_QUEUE); 1573 if (queue < 0) { 1574 /* try again - this time kick out a queue if needed */ 1575 queue = iwl_mvm_inactivity_check(mvm, mvmsta->deflink.sta_id); 1576 if (queue < 0) { 1577 IWL_ERR(mvm, "No available queues for new station\n"); 1578 return -ENOSPC; 1579 } 1580 } 1581 mvm->queue_info[queue].status = IWL_MVM_QUEUE_RESERVED; 1582 1583 mvmsta->reserved_queue = queue; 1584 1585 IWL_DEBUG_TX_QUEUES(mvm, "Reserving data queue #%d for sta_id %d\n", 1586 queue, mvmsta->deflink.sta_id); 1587 1588 return 0; 1589 } 1590 1591 /* 1592 * In DQA mode, after a HW restart the queues should be allocated as before, in 1593 * order to avoid race conditions when there are shared queues. This function 1594 * does the re-mapping and queue allocation. 1595 * 1596 * Note that re-enabling aggregations isn't done in this function. 1597 */ 1598 void iwl_mvm_realloc_queues_after_restart(struct iwl_mvm *mvm, 1599 struct ieee80211_sta *sta) 1600 { 1601 struct iwl_mvm_sta *mvm_sta = iwl_mvm_sta_from_mac80211(sta); 1602 unsigned int wdg = 1603 iwl_mvm_get_wd_timeout(mvm, mvm_sta->vif, false, false); 1604 int i; 1605 struct iwl_trans_txq_scd_cfg cfg = { 1606 .sta_id = mvm_sta->deflink.sta_id, 1607 .frame_limit = IWL_FRAME_LIMIT, 1608 }; 1609 1610 /* Make sure reserved queue is still marked as such (if allocated) */ 1611 if (mvm_sta->reserved_queue != IEEE80211_INVAL_HW_QUEUE) 1612 mvm->queue_info[mvm_sta->reserved_queue].status = 1613 IWL_MVM_QUEUE_RESERVED; 1614 1615 for (i = 0; i <= IWL_MAX_TID_COUNT; i++) { 1616 struct iwl_mvm_tid_data *tid_data = &mvm_sta->tid_data[i]; 1617 int txq_id = tid_data->txq_id; 1618 int ac; 1619 1620 if (txq_id == IWL_MVM_INVALID_QUEUE) 1621 continue; 1622 1623 ac = tid_to_mac80211_ac[i]; 1624 1625 if (iwl_mvm_has_new_tx_api(mvm)) { 1626 IWL_DEBUG_TX_QUEUES(mvm, 1627 "Re-mapping sta %d tid %d\n", 1628 mvm_sta->deflink.sta_id, i); 1629 txq_id = iwl_mvm_tvqm_enable_txq(mvm, sta, 1630 mvm_sta->deflink.sta_id, 1631 i, wdg); 1632 /* 1633 * on failures, just set it to IWL_MVM_INVALID_QUEUE 1634 * to try again later, we have no other good way of 1635 * failing here 1636 */ 1637 if (txq_id < 0) 1638 txq_id = IWL_MVM_INVALID_QUEUE; 1639 tid_data->txq_id = txq_id; 1640 1641 /* 1642 * Since we don't set the seq number after reset, and HW 1643 * sets it now, FW reset will cause the seq num to start 1644 * at 0 again, so driver will need to update it 1645 * internally as well, so it keeps in sync with real val 1646 */ 1647 tid_data->seq_number = 0; 1648 } else { 1649 u16 seq = IEEE80211_SEQ_TO_SN(tid_data->seq_number); 1650 1651 cfg.tid = i; 1652 cfg.fifo = iwl_mvm_mac_ac_to_tx_fifo(mvm, ac); 1653 cfg.aggregate = (txq_id >= IWL_MVM_DQA_MIN_DATA_QUEUE || 1654 txq_id == 1655 IWL_MVM_DQA_BSS_CLIENT_QUEUE); 1656 1657 IWL_DEBUG_TX_QUEUES(mvm, 1658 "Re-mapping sta %d tid %d to queue %d\n", 1659 mvm_sta->deflink.sta_id, i, 1660 txq_id); 1661 1662 iwl_mvm_enable_txq(mvm, sta, txq_id, seq, &cfg, wdg); 1663 mvm->queue_info[txq_id].status = IWL_MVM_QUEUE_READY; 1664 } 1665 } 1666 } 1667 1668 static int iwl_mvm_add_int_sta_common(struct iwl_mvm *mvm, 1669 struct iwl_mvm_int_sta *sta, 1670 const u8 *addr, 1671 u16 mac_id, u16 color) 1672 { 1673 struct iwl_mvm_add_sta_cmd cmd; 1674 int ret; 1675 u32 status = ADD_STA_SUCCESS; 1676 1677 lockdep_assert_held(&mvm->mutex); 1678 1679 memset(&cmd, 0, sizeof(cmd)); 1680 cmd.sta_id = sta->sta_id; 1681 1682 if (iwl_fw_lookup_cmd_ver(mvm->fw, ADD_STA, 0) >= 12 && 1683 sta->type == IWL_STA_AUX_ACTIVITY) 1684 cmd.mac_id_n_color = cpu_to_le32(mac_id); 1685 else 1686 cmd.mac_id_n_color = cpu_to_le32(FW_CMD_ID_AND_COLOR(mac_id, 1687 color)); 1688 1689 if (fw_has_api(&mvm->fw->ucode_capa, IWL_UCODE_TLV_API_STA_TYPE)) 1690 cmd.station_type = sta->type; 1691 1692 if (!iwl_mvm_has_new_tx_api(mvm)) 1693 cmd.tfd_queue_msk = cpu_to_le32(sta->tfd_queue_msk); 1694 cmd.tid_disable_tx = cpu_to_le16(0xffff); 1695 1696 if (addr) 1697 memcpy(cmd.addr, addr, ETH_ALEN); 1698 1699 ret = iwl_mvm_send_cmd_pdu_status(mvm, ADD_STA, 1700 iwl_mvm_add_sta_cmd_size(mvm), 1701 &cmd, &status); 1702 if (ret) 1703 return ret; 1704 1705 switch (status & IWL_ADD_STA_STATUS_MASK) { 1706 case ADD_STA_SUCCESS: 1707 IWL_DEBUG_INFO(mvm, "Internal station added.\n"); 1708 return 0; 1709 default: 1710 ret = -EIO; 1711 IWL_ERR(mvm, "Add internal station failed, status=0x%x\n", 1712 status); 1713 break; 1714 } 1715 return ret; 1716 } 1717 1718 /* Initialize driver data of a new sta */ 1719 int iwl_mvm_sta_init(struct iwl_mvm *mvm, struct ieee80211_vif *vif, 1720 struct ieee80211_sta *sta, int sta_id, u8 sta_type) 1721 { 1722 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 1723 struct iwl_mvm_sta *mvm_sta = iwl_mvm_sta_from_mac80211(sta); 1724 struct iwl_mvm_rxq_dup_data *dup_data; 1725 int i, ret = 0; 1726 1727 lockdep_assert_held(&mvm->mutex); 1728 1729 mvm_sta->mac_id_n_color = FW_CMD_ID_AND_COLOR(mvmvif->id, 1730 mvmvif->color); 1731 mvm_sta->vif = vif; 1732 1733 /* for MLD sta_id(s) should be allocated for each link before calling 1734 * this function 1735 */ 1736 if (!mvm->mld_api_is_used) { 1737 if (WARN_ON(sta_id == IWL_MVM_INVALID_STA)) 1738 return -EINVAL; 1739 1740 mvm_sta->deflink.sta_id = sta_id; 1741 rcu_assign_pointer(mvm_sta->link[0], &mvm_sta->deflink); 1742 1743 if (!mvm->trans->trans_cfg->gen2) 1744 mvm_sta->deflink.lq_sta.rs_drv.pers.max_agg_bufsize = 1745 LINK_QUAL_AGG_FRAME_LIMIT_DEF; 1746 else 1747 mvm_sta->deflink.lq_sta.rs_drv.pers.max_agg_bufsize = 1748 LINK_QUAL_AGG_FRAME_LIMIT_GEN2_DEF; 1749 } 1750 1751 mvm_sta->tt_tx_protection = false; 1752 mvm_sta->sta_type = sta_type; 1753 1754 mvm_sta->tid_disable_agg = 0xffff; /* No aggs at first */ 1755 1756 for (i = 0; i <= IWL_MAX_TID_COUNT; i++) { 1757 /* 1758 * Mark all queues for this STA as unallocated and defer TX 1759 * frames until the queue is allocated 1760 */ 1761 mvm_sta->tid_data[i].txq_id = IWL_MVM_INVALID_QUEUE; 1762 } 1763 1764 for (i = 0; i < ARRAY_SIZE(sta->txq); i++) { 1765 struct iwl_mvm_txq *mvmtxq = 1766 iwl_mvm_txq_from_mac80211(sta->txq[i]); 1767 1768 mvmtxq->txq_id = IWL_MVM_INVALID_QUEUE; 1769 INIT_LIST_HEAD(&mvmtxq->list); 1770 atomic_set(&mvmtxq->tx_request, 0); 1771 } 1772 1773 if (iwl_mvm_has_new_rx_api(mvm)) { 1774 int q; 1775 1776 dup_data = kcalloc(mvm->trans->num_rx_queues, 1777 sizeof(*dup_data), GFP_KERNEL); 1778 if (!dup_data) 1779 return -ENOMEM; 1780 /* 1781 * Initialize all the last_seq values to 0xffff which can never 1782 * compare equal to the frame's seq_ctrl in the check in 1783 * iwl_mvm_is_dup() since the lower 4 bits are the fragment 1784 * number and fragmented packets don't reach that function. 1785 * 1786 * This thus allows receiving a packet with seqno 0 and the 1787 * retry bit set as the very first packet on a new TID. 1788 */ 1789 for (q = 0; q < mvm->trans->num_rx_queues; q++) 1790 memset(dup_data[q].last_seq, 0xff, 1791 sizeof(dup_data[q].last_seq)); 1792 mvm_sta->dup_data = dup_data; 1793 } 1794 1795 if (!iwl_mvm_has_new_tx_api(mvm)) { 1796 ret = iwl_mvm_reserve_sta_stream(mvm, sta, 1797 ieee80211_vif_type_p2p(vif)); 1798 if (ret) 1799 return ret; 1800 } 1801 1802 /* 1803 * if rs is registered with mac80211, then "add station" will be handled 1804 * via the corresponding ops, otherwise need to notify rate scaling here 1805 */ 1806 if (iwl_mvm_has_tlc_offload(mvm)) 1807 iwl_mvm_rs_add_sta(mvm, mvm_sta); 1808 else 1809 spin_lock_init(&mvm_sta->deflink.lq_sta.rs_drv.pers.lock); 1810 1811 iwl_mvm_toggle_tx_ant(mvm, &mvm_sta->tx_ant); 1812 1813 return 0; 1814 } 1815 1816 int iwl_mvm_add_sta(struct iwl_mvm *mvm, 1817 struct ieee80211_vif *vif, 1818 struct ieee80211_sta *sta) 1819 { 1820 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 1821 struct iwl_mvm_sta *mvm_sta = iwl_mvm_sta_from_mac80211(sta); 1822 int ret, sta_id; 1823 bool sta_update = false; 1824 unsigned int sta_flags = 0; 1825 1826 lockdep_assert_held(&mvm->mutex); 1827 1828 if (!test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status)) 1829 sta_id = iwl_mvm_find_free_sta_id(mvm, 1830 ieee80211_vif_type_p2p(vif)); 1831 else 1832 sta_id = mvm_sta->deflink.sta_id; 1833 1834 if (sta_id == IWL_MVM_INVALID_STA) 1835 return -ENOSPC; 1836 1837 spin_lock_init(&mvm_sta->lock); 1838 1839 /* if this is a HW restart re-alloc existing queues */ 1840 if (test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status)) { 1841 struct iwl_mvm_int_sta tmp_sta = { 1842 .sta_id = sta_id, 1843 .type = mvm_sta->sta_type, 1844 }; 1845 1846 /* First add an empty station since allocating 1847 * a queue requires a valid station 1848 */ 1849 ret = iwl_mvm_add_int_sta_common(mvm, &tmp_sta, sta->addr, 1850 mvmvif->id, mvmvif->color); 1851 if (ret) 1852 goto err; 1853 1854 iwl_mvm_realloc_queues_after_restart(mvm, sta); 1855 sta_update = true; 1856 sta_flags = iwl_mvm_has_new_tx_api(mvm) ? 0 : STA_MODIFY_QUEUES; 1857 goto update_fw; 1858 } 1859 1860 ret = iwl_mvm_sta_init(mvm, vif, sta, sta_id, 1861 sta->tdls ? IWL_STA_TDLS_LINK : IWL_STA_LINK); 1862 1863 update_fw: 1864 ret = iwl_mvm_sta_send_to_fw(mvm, sta, sta_update, sta_flags); 1865 if (ret) 1866 goto err; 1867 1868 if (vif->type == NL80211_IFTYPE_STATION) { 1869 if (!sta->tdls) { 1870 WARN_ON(mvmvif->deflink.ap_sta_id != IWL_MVM_INVALID_STA); 1871 mvmvif->deflink.ap_sta_id = sta_id; 1872 } else { 1873 WARN_ON(mvmvif->deflink.ap_sta_id == IWL_MVM_INVALID_STA); 1874 } 1875 } 1876 1877 rcu_assign_pointer(mvm->fw_id_to_mac_id[sta_id], sta); 1878 1879 return 0; 1880 1881 err: 1882 return ret; 1883 } 1884 1885 int iwl_mvm_drain_sta(struct iwl_mvm *mvm, struct iwl_mvm_sta *mvmsta, 1886 bool drain) 1887 { 1888 struct iwl_mvm_add_sta_cmd cmd = {}; 1889 int ret; 1890 u32 status; 1891 1892 lockdep_assert_held(&mvm->mutex); 1893 1894 cmd.mac_id_n_color = cpu_to_le32(mvmsta->mac_id_n_color); 1895 cmd.sta_id = mvmsta->deflink.sta_id; 1896 cmd.add_modify = STA_MODE_MODIFY; 1897 cmd.station_flags = drain ? cpu_to_le32(STA_FLG_DRAIN_FLOW) : 0; 1898 cmd.station_flags_msk = cpu_to_le32(STA_FLG_DRAIN_FLOW); 1899 1900 status = ADD_STA_SUCCESS; 1901 ret = iwl_mvm_send_cmd_pdu_status(mvm, ADD_STA, 1902 iwl_mvm_add_sta_cmd_size(mvm), 1903 &cmd, &status); 1904 if (ret) 1905 return ret; 1906 1907 switch (status & IWL_ADD_STA_STATUS_MASK) { 1908 case ADD_STA_SUCCESS: 1909 IWL_DEBUG_INFO(mvm, "Frames for staid %d will drained in fw\n", 1910 mvmsta->deflink.sta_id); 1911 break; 1912 default: 1913 ret = -EIO; 1914 IWL_ERR(mvm, "Couldn't drain frames for staid %d\n", 1915 mvmsta->deflink.sta_id); 1916 break; 1917 } 1918 1919 return ret; 1920 } 1921 1922 /* 1923 * Remove a station from the FW table. Before sending the command to remove 1924 * the station validate that the station is indeed known to the driver (sanity 1925 * only). 1926 */ 1927 static int iwl_mvm_rm_sta_common(struct iwl_mvm *mvm, u8 sta_id) 1928 { 1929 struct ieee80211_sta *sta; 1930 struct iwl_mvm_rm_sta_cmd rm_sta_cmd = { 1931 .sta_id = sta_id, 1932 }; 1933 int ret; 1934 1935 sta = rcu_dereference_protected(mvm->fw_id_to_mac_id[sta_id], 1936 lockdep_is_held(&mvm->mutex)); 1937 1938 /* Note: internal stations are marked as error values */ 1939 if (!sta) { 1940 IWL_ERR(mvm, "Invalid station id\n"); 1941 return -EINVAL; 1942 } 1943 1944 ret = iwl_mvm_send_cmd_pdu(mvm, REMOVE_STA, 0, 1945 sizeof(rm_sta_cmd), &rm_sta_cmd); 1946 if (ret) { 1947 IWL_ERR(mvm, "Failed to remove station. Id=%d\n", sta_id); 1948 return ret; 1949 } 1950 1951 return 0; 1952 } 1953 1954 static void iwl_mvm_disable_sta_queues(struct iwl_mvm *mvm, 1955 struct ieee80211_vif *vif, 1956 struct ieee80211_sta *sta) 1957 { 1958 struct iwl_mvm_sta *mvm_sta = iwl_mvm_sta_from_mac80211(sta); 1959 int i; 1960 1961 lockdep_assert_held(&mvm->mutex); 1962 1963 for (i = 0; i < ARRAY_SIZE(mvm_sta->tid_data); i++) { 1964 if (mvm_sta->tid_data[i].txq_id == IWL_MVM_INVALID_QUEUE) 1965 continue; 1966 1967 iwl_mvm_disable_txq(mvm, sta, mvm_sta->deflink.sta_id, 1968 &mvm_sta->tid_data[i].txq_id, i); 1969 mvm_sta->tid_data[i].txq_id = IWL_MVM_INVALID_QUEUE; 1970 } 1971 1972 for (i = 0; i < ARRAY_SIZE(sta->txq); i++) { 1973 struct iwl_mvm_txq *mvmtxq = 1974 iwl_mvm_txq_from_mac80211(sta->txq[i]); 1975 1976 spin_lock_bh(&mvm->add_stream_lock); 1977 mvmtxq->txq_id = IWL_MVM_INVALID_QUEUE; 1978 list_del_init(&mvmtxq->list); 1979 clear_bit(IWL_MVM_TXQ_STATE_READY, &mvmtxq->state); 1980 spin_unlock_bh(&mvm->add_stream_lock); 1981 } 1982 } 1983 1984 int iwl_mvm_wait_sta_queues_empty(struct iwl_mvm *mvm, 1985 struct iwl_mvm_sta *mvm_sta) 1986 { 1987 int i; 1988 1989 for (i = 0; i < ARRAY_SIZE(mvm_sta->tid_data); i++) { 1990 u16 txq_id; 1991 int ret; 1992 1993 spin_lock_bh(&mvm_sta->lock); 1994 txq_id = mvm_sta->tid_data[i].txq_id; 1995 spin_unlock_bh(&mvm_sta->lock); 1996 1997 if (txq_id == IWL_MVM_INVALID_QUEUE) 1998 continue; 1999 2000 ret = iwl_trans_wait_txq_empty(mvm->trans, txq_id); 2001 if (ret) 2002 return ret; 2003 } 2004 2005 return 0; 2006 } 2007 2008 /* Execute the common part for both MLD and non-MLD modes. 2009 * Returns if we're done with removing the station, either 2010 * with error or success 2011 */ 2012 bool iwl_mvm_sta_del(struct iwl_mvm *mvm, struct ieee80211_vif *vif, 2013 struct ieee80211_sta *sta, 2014 struct ieee80211_link_sta *link_sta, int *ret) 2015 { 2016 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 2017 struct iwl_mvm_vif_link_info *mvm_link = 2018 mvmvif->link[link_sta->link_id]; 2019 struct iwl_mvm_sta *mvm_sta = iwl_mvm_sta_from_mac80211(sta); 2020 struct iwl_mvm_link_sta *mvm_link_sta; 2021 u8 sta_id; 2022 2023 lockdep_assert_held(&mvm->mutex); 2024 2025 mvm_link_sta = 2026 rcu_dereference_protected(mvm_sta->link[link_sta->link_id], 2027 lockdep_is_held(&mvm->mutex)); 2028 sta_id = mvm_link_sta->sta_id; 2029 2030 /* If there is a TXQ still marked as reserved - free it */ 2031 if (mvm_sta->reserved_queue != IEEE80211_INVAL_HW_QUEUE) { 2032 u8 reserved_txq = mvm_sta->reserved_queue; 2033 enum iwl_mvm_queue_status *status; 2034 2035 /* 2036 * If no traffic has gone through the reserved TXQ - it 2037 * is still marked as IWL_MVM_QUEUE_RESERVED, and 2038 * should be manually marked as free again 2039 */ 2040 status = &mvm->queue_info[reserved_txq].status; 2041 if (WARN((*status != IWL_MVM_QUEUE_RESERVED) && 2042 (*status != IWL_MVM_QUEUE_FREE), 2043 "sta_id %d reserved txq %d status %d", 2044 sta_id, reserved_txq, *status)) { 2045 *ret = -EINVAL; 2046 return true; 2047 } 2048 2049 *status = IWL_MVM_QUEUE_FREE; 2050 } 2051 2052 if (vif->type == NL80211_IFTYPE_STATION) { 2053 /* if associated - we can't remove the AP STA now */ 2054 if (vif->cfg.assoc) 2055 return true; 2056 2057 /* first remove remaining keys */ 2058 iwl_mvm_sec_key_remove_ap(mvm, vif, mvm_link, 0); 2059 2060 /* unassoc - go ahead - remove the AP STA now */ 2061 mvm_link->ap_sta_id = IWL_MVM_INVALID_STA; 2062 } 2063 2064 /* 2065 * This shouldn't happen - the TDLS channel switch should be canceled 2066 * before the STA is removed. 2067 */ 2068 if (WARN_ON_ONCE(mvm->tdls_cs.peer.sta_id == sta_id)) { 2069 mvm->tdls_cs.peer.sta_id = IWL_MVM_INVALID_STA; 2070 cancel_delayed_work(&mvm->tdls_cs.dwork); 2071 } 2072 2073 return false; 2074 } 2075 2076 int iwl_mvm_rm_sta(struct iwl_mvm *mvm, 2077 struct ieee80211_vif *vif, 2078 struct ieee80211_sta *sta) 2079 { 2080 struct iwl_mvm_sta *mvm_sta = iwl_mvm_sta_from_mac80211(sta); 2081 int ret; 2082 2083 lockdep_assert_held(&mvm->mutex); 2084 2085 ret = iwl_mvm_drain_sta(mvm, mvm_sta, true); 2086 if (ret) 2087 return ret; 2088 2089 /* flush its queues here since we are freeing mvm_sta */ 2090 ret = iwl_mvm_flush_sta(mvm, mvm_sta, false); 2091 if (ret) 2092 return ret; 2093 if (iwl_mvm_has_new_tx_api(mvm)) { 2094 ret = iwl_mvm_wait_sta_queues_empty(mvm, mvm_sta); 2095 } else { 2096 u32 q_mask = mvm_sta->tfd_queue_msk; 2097 2098 ret = iwl_trans_wait_tx_queues_empty(mvm->trans, 2099 q_mask); 2100 } 2101 if (ret) 2102 return ret; 2103 2104 ret = iwl_mvm_drain_sta(mvm, mvm_sta, false); 2105 2106 iwl_mvm_disable_sta_queues(mvm, vif, sta); 2107 2108 if (iwl_mvm_sta_del(mvm, vif, sta, &sta->deflink, &ret)) 2109 return ret; 2110 2111 ret = iwl_mvm_rm_sta_common(mvm, mvm_sta->deflink.sta_id); 2112 RCU_INIT_POINTER(mvm->fw_id_to_mac_id[mvm_sta->deflink.sta_id], NULL); 2113 2114 return ret; 2115 } 2116 2117 int iwl_mvm_rm_sta_id(struct iwl_mvm *mvm, 2118 struct ieee80211_vif *vif, 2119 u8 sta_id) 2120 { 2121 int ret = iwl_mvm_rm_sta_common(mvm, sta_id); 2122 2123 lockdep_assert_held(&mvm->mutex); 2124 2125 RCU_INIT_POINTER(mvm->fw_id_to_mac_id[sta_id], NULL); 2126 return ret; 2127 } 2128 2129 int iwl_mvm_allocate_int_sta(struct iwl_mvm *mvm, 2130 struct iwl_mvm_int_sta *sta, 2131 u32 qmask, enum nl80211_iftype iftype, 2132 u8 type) 2133 { 2134 if (!test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status) || 2135 sta->sta_id == IWL_MVM_INVALID_STA) { 2136 sta->sta_id = iwl_mvm_find_free_sta_id(mvm, iftype); 2137 if (WARN_ON_ONCE(sta->sta_id == IWL_MVM_INVALID_STA)) 2138 return -ENOSPC; 2139 } 2140 2141 sta->tfd_queue_msk = qmask; 2142 sta->type = type; 2143 2144 /* put a non-NULL value so iterating over the stations won't stop */ 2145 RCU_INIT_POINTER(mvm->fw_id_to_mac_id[sta->sta_id], ERR_PTR(-EINVAL)); 2146 return 0; 2147 } 2148 2149 void iwl_mvm_dealloc_int_sta(struct iwl_mvm *mvm, struct iwl_mvm_int_sta *sta) 2150 { 2151 RCU_INIT_POINTER(mvm->fw_id_to_mac_id[sta->sta_id], NULL); 2152 memset(sta, 0, sizeof(struct iwl_mvm_int_sta)); 2153 sta->sta_id = IWL_MVM_INVALID_STA; 2154 } 2155 2156 static void iwl_mvm_enable_aux_snif_queue(struct iwl_mvm *mvm, u16 queue, 2157 u8 sta_id, u8 fifo) 2158 { 2159 unsigned int wdg_timeout = 2160 mvm->trans->trans_cfg->base_params->wd_timeout; 2161 struct iwl_trans_txq_scd_cfg cfg = { 2162 .fifo = fifo, 2163 .sta_id = sta_id, 2164 .tid = IWL_MAX_TID_COUNT, 2165 .aggregate = false, 2166 .frame_limit = IWL_FRAME_LIMIT, 2167 }; 2168 2169 WARN_ON(iwl_mvm_has_new_tx_api(mvm)); 2170 2171 iwl_mvm_enable_txq(mvm, NULL, queue, 0, &cfg, wdg_timeout); 2172 } 2173 2174 static int iwl_mvm_enable_aux_snif_queue_tvqm(struct iwl_mvm *mvm, u8 sta_id) 2175 { 2176 unsigned int wdg_timeout = 2177 mvm->trans->trans_cfg->base_params->wd_timeout; 2178 2179 WARN_ON(!iwl_mvm_has_new_tx_api(mvm)); 2180 2181 return iwl_mvm_tvqm_enable_txq(mvm, NULL, sta_id, IWL_MAX_TID_COUNT, 2182 wdg_timeout); 2183 } 2184 2185 static int iwl_mvm_add_int_sta_with_queue(struct iwl_mvm *mvm, int macidx, 2186 int maccolor, u8 *addr, 2187 struct iwl_mvm_int_sta *sta, 2188 u16 *queue, int fifo) 2189 { 2190 int ret; 2191 2192 /* Map queue to fifo - needs to happen before adding station */ 2193 if (!iwl_mvm_has_new_tx_api(mvm)) 2194 iwl_mvm_enable_aux_snif_queue(mvm, *queue, sta->sta_id, fifo); 2195 2196 ret = iwl_mvm_add_int_sta_common(mvm, sta, addr, macidx, maccolor); 2197 if (ret) { 2198 if (!iwl_mvm_has_new_tx_api(mvm)) 2199 iwl_mvm_disable_txq(mvm, NULL, sta->sta_id, queue, 2200 IWL_MAX_TID_COUNT); 2201 return ret; 2202 } 2203 2204 /* 2205 * For 22000 firmware and on we cannot add queue to a station unknown 2206 * to firmware so enable queue here - after the station was added 2207 */ 2208 if (iwl_mvm_has_new_tx_api(mvm)) { 2209 int txq; 2210 2211 txq = iwl_mvm_enable_aux_snif_queue_tvqm(mvm, sta->sta_id); 2212 if (txq < 0) { 2213 iwl_mvm_rm_sta_common(mvm, sta->sta_id); 2214 return txq; 2215 } 2216 2217 *queue = txq; 2218 } 2219 2220 return 0; 2221 } 2222 2223 int iwl_mvm_add_aux_sta(struct iwl_mvm *mvm, u32 lmac_id) 2224 { 2225 int ret; 2226 u32 qmask = mvm->aux_queue == IWL_MVM_INVALID_QUEUE ? 0 : 2227 BIT(mvm->aux_queue); 2228 2229 lockdep_assert_held(&mvm->mutex); 2230 2231 /* Allocate aux station and assign to it the aux queue */ 2232 ret = iwl_mvm_allocate_int_sta(mvm, &mvm->aux_sta, qmask, 2233 NL80211_IFTYPE_UNSPECIFIED, 2234 IWL_STA_AUX_ACTIVITY); 2235 if (ret) 2236 return ret; 2237 2238 /* 2239 * In CDB NICs we need to specify which lmac to use for aux activity 2240 * using the mac_id argument place to send lmac_id to the function 2241 */ 2242 ret = iwl_mvm_add_int_sta_with_queue(mvm, lmac_id, 0, NULL, 2243 &mvm->aux_sta, &mvm->aux_queue, 2244 IWL_MVM_TX_FIFO_MCAST); 2245 if (ret) { 2246 iwl_mvm_dealloc_int_sta(mvm, &mvm->aux_sta); 2247 return ret; 2248 } 2249 2250 return 0; 2251 } 2252 2253 int iwl_mvm_add_snif_sta(struct iwl_mvm *mvm, struct ieee80211_vif *vif) 2254 { 2255 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 2256 2257 lockdep_assert_held(&mvm->mutex); 2258 2259 return iwl_mvm_add_int_sta_with_queue(mvm, mvmvif->id, mvmvif->color, 2260 NULL, &mvm->snif_sta, 2261 &mvm->snif_queue, 2262 IWL_MVM_TX_FIFO_BE); 2263 } 2264 2265 int iwl_mvm_rm_snif_sta(struct iwl_mvm *mvm, struct ieee80211_vif *vif) 2266 { 2267 int ret; 2268 2269 lockdep_assert_held(&mvm->mutex); 2270 2271 if (WARN_ON_ONCE(mvm->snif_sta.sta_id == IWL_MVM_INVALID_STA)) 2272 return -EINVAL; 2273 2274 iwl_mvm_disable_txq(mvm, NULL, mvm->snif_sta.sta_id, 2275 &mvm->snif_queue, IWL_MAX_TID_COUNT); 2276 ret = iwl_mvm_rm_sta_common(mvm, mvm->snif_sta.sta_id); 2277 if (ret) 2278 IWL_WARN(mvm, "Failed sending remove station\n"); 2279 2280 return ret; 2281 } 2282 2283 int iwl_mvm_rm_aux_sta(struct iwl_mvm *mvm) 2284 { 2285 int ret; 2286 2287 lockdep_assert_held(&mvm->mutex); 2288 2289 if (WARN_ON_ONCE(mvm->aux_sta.sta_id == IWL_MVM_INVALID_STA)) 2290 return -EINVAL; 2291 2292 iwl_mvm_disable_txq(mvm, NULL, mvm->aux_sta.sta_id, 2293 &mvm->aux_queue, IWL_MAX_TID_COUNT); 2294 ret = iwl_mvm_rm_sta_common(mvm, mvm->aux_sta.sta_id); 2295 if (ret) 2296 IWL_WARN(mvm, "Failed sending remove station\n"); 2297 iwl_mvm_dealloc_int_sta(mvm, &mvm->aux_sta); 2298 2299 return ret; 2300 } 2301 2302 void iwl_mvm_dealloc_snif_sta(struct iwl_mvm *mvm) 2303 { 2304 iwl_mvm_dealloc_int_sta(mvm, &mvm->snif_sta); 2305 } 2306 2307 /* 2308 * Send the add station command for the vif's broadcast station. 2309 * Assumes that the station was already allocated. 2310 * 2311 * @mvm: the mvm component 2312 * @vif: the interface to which the broadcast station is added 2313 * @bsta: the broadcast station to add. 2314 */ 2315 int iwl_mvm_send_add_bcast_sta(struct iwl_mvm *mvm, struct ieee80211_vif *vif) 2316 { 2317 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 2318 struct iwl_mvm_int_sta *bsta = &mvmvif->deflink.bcast_sta; 2319 static const u8 _baddr[] = {0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF}; 2320 const u8 *baddr = _baddr; 2321 int queue; 2322 int ret; 2323 unsigned int wdg_timeout = 2324 iwl_mvm_get_wd_timeout(mvm, vif, false, false); 2325 struct iwl_trans_txq_scd_cfg cfg = { 2326 .fifo = IWL_MVM_TX_FIFO_VO, 2327 .sta_id = mvmvif->deflink.bcast_sta.sta_id, 2328 .tid = IWL_MAX_TID_COUNT, 2329 .aggregate = false, 2330 .frame_limit = IWL_FRAME_LIMIT, 2331 }; 2332 2333 lockdep_assert_held(&mvm->mutex); 2334 2335 if (!iwl_mvm_has_new_tx_api(mvm)) { 2336 if (vif->type == NL80211_IFTYPE_AP || 2337 vif->type == NL80211_IFTYPE_ADHOC) { 2338 queue = mvm->probe_queue; 2339 } else if (vif->type == NL80211_IFTYPE_P2P_DEVICE) { 2340 queue = mvm->p2p_dev_queue; 2341 } else { 2342 WARN(1, "Missing required TXQ for adding bcast STA\n"); 2343 return -EINVAL; 2344 } 2345 2346 bsta->tfd_queue_msk |= BIT(queue); 2347 2348 iwl_mvm_enable_txq(mvm, NULL, queue, 0, &cfg, wdg_timeout); 2349 } 2350 2351 if (vif->type == NL80211_IFTYPE_ADHOC) 2352 baddr = vif->bss_conf.bssid; 2353 2354 if (WARN_ON_ONCE(bsta->sta_id == IWL_MVM_INVALID_STA)) 2355 return -ENOSPC; 2356 2357 ret = iwl_mvm_add_int_sta_common(mvm, bsta, baddr, 2358 mvmvif->id, mvmvif->color); 2359 if (ret) 2360 return ret; 2361 2362 /* 2363 * For 22000 firmware and on we cannot add queue to a station unknown 2364 * to firmware so enable queue here - after the station was added 2365 */ 2366 if (iwl_mvm_has_new_tx_api(mvm)) { 2367 queue = iwl_mvm_tvqm_enable_txq(mvm, NULL, bsta->sta_id, 2368 IWL_MAX_TID_COUNT, 2369 wdg_timeout); 2370 if (queue < 0) { 2371 iwl_mvm_rm_sta_common(mvm, bsta->sta_id); 2372 return queue; 2373 } 2374 2375 if (vif->type == NL80211_IFTYPE_AP || 2376 vif->type == NL80211_IFTYPE_ADHOC) { 2377 /* for queue management */ 2378 mvm->probe_queue = queue; 2379 /* for use in TX */ 2380 mvmvif->deflink.mgmt_queue = queue; 2381 } else if (vif->type == NL80211_IFTYPE_P2P_DEVICE) { 2382 mvm->p2p_dev_queue = queue; 2383 } 2384 } else if (vif->type == NL80211_IFTYPE_AP || 2385 vif->type == NL80211_IFTYPE_ADHOC) { 2386 /* set it for use in TX */ 2387 mvmvif->deflink.mgmt_queue = mvm->probe_queue; 2388 } 2389 2390 return 0; 2391 } 2392 2393 void iwl_mvm_free_bcast_sta_queues(struct iwl_mvm *mvm, 2394 struct ieee80211_vif *vif) 2395 { 2396 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 2397 u16 *queueptr, queue; 2398 2399 lockdep_assert_held(&mvm->mutex); 2400 2401 iwl_mvm_flush_sta(mvm, &mvmvif->deflink.bcast_sta, true); 2402 2403 switch (vif->type) { 2404 case NL80211_IFTYPE_AP: 2405 case NL80211_IFTYPE_ADHOC: 2406 queueptr = &mvm->probe_queue; 2407 break; 2408 case NL80211_IFTYPE_P2P_DEVICE: 2409 queueptr = &mvm->p2p_dev_queue; 2410 break; 2411 default: 2412 WARN(1, "Can't free bcast queue on vif type %d\n", 2413 vif->type); 2414 return; 2415 } 2416 2417 queue = *queueptr; 2418 iwl_mvm_disable_txq(mvm, NULL, mvmvif->deflink.bcast_sta.sta_id, 2419 queueptr, IWL_MAX_TID_COUNT); 2420 2421 if (vif->type == NL80211_IFTYPE_AP || vif->type == NL80211_IFTYPE_ADHOC) 2422 mvmvif->deflink.mgmt_queue = mvm->probe_queue; 2423 2424 if (iwl_mvm_has_new_tx_api(mvm)) 2425 return; 2426 2427 WARN_ON(!(mvmvif->deflink.bcast_sta.tfd_queue_msk & BIT(queue))); 2428 mvmvif->deflink.bcast_sta.tfd_queue_msk &= ~BIT(queue); 2429 } 2430 2431 /* Send the FW a request to remove the station from it's internal data 2432 * structures, but DO NOT remove the entry from the local data structures. */ 2433 int iwl_mvm_send_rm_bcast_sta(struct iwl_mvm *mvm, struct ieee80211_vif *vif) 2434 { 2435 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 2436 int ret; 2437 2438 lockdep_assert_held(&mvm->mutex); 2439 2440 iwl_mvm_free_bcast_sta_queues(mvm, vif); 2441 2442 ret = iwl_mvm_rm_sta_common(mvm, mvmvif->deflink.bcast_sta.sta_id); 2443 if (ret) 2444 IWL_WARN(mvm, "Failed sending remove station\n"); 2445 return ret; 2446 } 2447 2448 int iwl_mvm_alloc_bcast_sta(struct iwl_mvm *mvm, struct ieee80211_vif *vif) 2449 { 2450 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 2451 2452 lockdep_assert_held(&mvm->mutex); 2453 2454 return iwl_mvm_allocate_int_sta(mvm, &mvmvif->deflink.bcast_sta, 0, 2455 ieee80211_vif_type_p2p(vif), 2456 IWL_STA_GENERAL_PURPOSE); 2457 } 2458 2459 /* Allocate a new station entry for the broadcast station to the given vif, 2460 * and send it to the FW. 2461 * Note that each P2P mac should have its own broadcast station. 2462 * 2463 * @mvm: the mvm component 2464 * @vif: the interface to which the broadcast station is added 2465 * @bsta: the broadcast station to add. */ 2466 int iwl_mvm_add_p2p_bcast_sta(struct iwl_mvm *mvm, struct ieee80211_vif *vif) 2467 { 2468 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 2469 struct iwl_mvm_int_sta *bsta = &mvmvif->deflink.bcast_sta; 2470 int ret; 2471 2472 lockdep_assert_held(&mvm->mutex); 2473 2474 ret = iwl_mvm_alloc_bcast_sta(mvm, vif); 2475 if (ret) 2476 return ret; 2477 2478 ret = iwl_mvm_send_add_bcast_sta(mvm, vif); 2479 2480 if (ret) 2481 iwl_mvm_dealloc_int_sta(mvm, bsta); 2482 2483 return ret; 2484 } 2485 2486 void iwl_mvm_dealloc_bcast_sta(struct iwl_mvm *mvm, struct ieee80211_vif *vif) 2487 { 2488 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 2489 2490 iwl_mvm_dealloc_int_sta(mvm, &mvmvif->deflink.bcast_sta); 2491 } 2492 2493 /* 2494 * Send the FW a request to remove the station from it's internal data 2495 * structures, and in addition remove it from the local data structure. 2496 */ 2497 int iwl_mvm_rm_p2p_bcast_sta(struct iwl_mvm *mvm, struct ieee80211_vif *vif) 2498 { 2499 int ret; 2500 2501 lockdep_assert_held(&mvm->mutex); 2502 2503 ret = iwl_mvm_send_rm_bcast_sta(mvm, vif); 2504 2505 iwl_mvm_dealloc_bcast_sta(mvm, vif); 2506 2507 return ret; 2508 } 2509 2510 /* 2511 * Allocate a new station entry for the multicast station to the given vif, 2512 * and send it to the FW. 2513 * Note that each AP/GO mac should have its own multicast station. 2514 * 2515 * @mvm: the mvm component 2516 * @vif: the interface to which the multicast station is added 2517 */ 2518 int iwl_mvm_add_mcast_sta(struct iwl_mvm *mvm, struct ieee80211_vif *vif) 2519 { 2520 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 2521 struct iwl_mvm_int_sta *msta = &mvmvif->deflink.mcast_sta; 2522 static const u8 _maddr[] = {0x03, 0x00, 0x00, 0x00, 0x00, 0x00}; 2523 const u8 *maddr = _maddr; 2524 struct iwl_trans_txq_scd_cfg cfg = { 2525 .fifo = vif->type == NL80211_IFTYPE_AP ? 2526 IWL_MVM_TX_FIFO_MCAST : IWL_MVM_TX_FIFO_BE, 2527 .sta_id = msta->sta_id, 2528 .tid = 0, 2529 .aggregate = false, 2530 .frame_limit = IWL_FRAME_LIMIT, 2531 }; 2532 unsigned int timeout = iwl_mvm_get_wd_timeout(mvm, vif, false, false); 2533 int ret; 2534 2535 lockdep_assert_held(&mvm->mutex); 2536 2537 if (WARN_ON(vif->type != NL80211_IFTYPE_AP && 2538 vif->type != NL80211_IFTYPE_ADHOC)) 2539 return -ENOTSUPP; 2540 2541 /* 2542 * In IBSS, ieee80211_check_queues() sets the cab_queue to be 2543 * invalid, so make sure we use the queue we want. 2544 * Note that this is done here as we want to avoid making DQA 2545 * changes in mac80211 layer. 2546 */ 2547 if (vif->type == NL80211_IFTYPE_ADHOC) 2548 mvmvif->deflink.cab_queue = IWL_MVM_DQA_GCAST_QUEUE; 2549 2550 /* 2551 * While in previous FWs we had to exclude cab queue from TFD queue 2552 * mask, now it is needed as any other queue. 2553 */ 2554 if (!iwl_mvm_has_new_tx_api(mvm) && 2555 fw_has_api(&mvm->fw->ucode_capa, IWL_UCODE_TLV_API_STA_TYPE)) { 2556 iwl_mvm_enable_txq(mvm, NULL, mvmvif->deflink.cab_queue, 0, 2557 &cfg, 2558 timeout); 2559 msta->tfd_queue_msk |= BIT(mvmvif->deflink.cab_queue); 2560 } 2561 ret = iwl_mvm_add_int_sta_common(mvm, msta, maddr, 2562 mvmvif->id, mvmvif->color); 2563 if (ret) 2564 goto err; 2565 2566 /* 2567 * Enable cab queue after the ADD_STA command is sent. 2568 * This is needed for 22000 firmware which won't accept SCD_QUEUE_CFG 2569 * command with unknown station id, and for FW that doesn't support 2570 * station API since the cab queue is not included in the 2571 * tfd_queue_mask. 2572 */ 2573 if (iwl_mvm_has_new_tx_api(mvm)) { 2574 int queue = iwl_mvm_tvqm_enable_txq(mvm, NULL, msta->sta_id, 2575 0, timeout); 2576 if (queue < 0) { 2577 ret = queue; 2578 goto err; 2579 } 2580 mvmvif->deflink.cab_queue = queue; 2581 } else if (!fw_has_api(&mvm->fw->ucode_capa, 2582 IWL_UCODE_TLV_API_STA_TYPE)) 2583 iwl_mvm_enable_txq(mvm, NULL, mvmvif->deflink.cab_queue, 0, 2584 &cfg, 2585 timeout); 2586 2587 return 0; 2588 err: 2589 iwl_mvm_dealloc_int_sta(mvm, msta); 2590 return ret; 2591 } 2592 2593 static int __iwl_mvm_remove_sta_key(struct iwl_mvm *mvm, u8 sta_id, 2594 struct ieee80211_key_conf *keyconf, 2595 bool mcast) 2596 { 2597 union { 2598 struct iwl_mvm_add_sta_key_cmd_v1 cmd_v1; 2599 struct iwl_mvm_add_sta_key_cmd cmd; 2600 } u = {}; 2601 bool new_api = fw_has_api(&mvm->fw->ucode_capa, 2602 IWL_UCODE_TLV_API_TKIP_MIC_KEYS); 2603 __le16 key_flags; 2604 int ret, size; 2605 u32 status; 2606 2607 /* This is a valid situation for GTK removal */ 2608 if (sta_id == IWL_MVM_INVALID_STA) 2609 return 0; 2610 2611 key_flags = cpu_to_le16((keyconf->keyidx << STA_KEY_FLG_KEYID_POS) & 2612 STA_KEY_FLG_KEYID_MSK); 2613 key_flags |= cpu_to_le16(STA_KEY_FLG_NO_ENC | STA_KEY_FLG_WEP_KEY_MAP); 2614 key_flags |= cpu_to_le16(STA_KEY_NOT_VALID); 2615 2616 if (mcast) 2617 key_flags |= cpu_to_le16(STA_KEY_MULTICAST); 2618 2619 /* 2620 * The fields assigned here are in the same location at the start 2621 * of the command, so we can do this union trick. 2622 */ 2623 u.cmd.common.key_flags = key_flags; 2624 u.cmd.common.key_offset = keyconf->hw_key_idx; 2625 u.cmd.common.sta_id = sta_id; 2626 2627 size = new_api ? sizeof(u.cmd) : sizeof(u.cmd_v1); 2628 2629 status = ADD_STA_SUCCESS; 2630 ret = iwl_mvm_send_cmd_pdu_status(mvm, ADD_STA_KEY, size, &u.cmd, 2631 &status); 2632 2633 switch (status) { 2634 case ADD_STA_SUCCESS: 2635 IWL_DEBUG_WEP(mvm, "MODIFY_STA: remove sta key passed\n"); 2636 break; 2637 default: 2638 ret = -EIO; 2639 IWL_ERR(mvm, "MODIFY_STA: remove sta key failed\n"); 2640 break; 2641 } 2642 2643 return ret; 2644 } 2645 2646 /* 2647 * Send the FW a request to remove the station from it's internal data 2648 * structures, and in addition remove it from the local data structure. 2649 */ 2650 int iwl_mvm_rm_mcast_sta(struct iwl_mvm *mvm, struct ieee80211_vif *vif) 2651 { 2652 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 2653 int ret; 2654 2655 lockdep_assert_held(&mvm->mutex); 2656 2657 iwl_mvm_flush_sta(mvm, &mvmvif->deflink.mcast_sta, true); 2658 2659 iwl_mvm_disable_txq(mvm, NULL, mvmvif->deflink.mcast_sta.sta_id, 2660 &mvmvif->deflink.cab_queue, 0); 2661 2662 ret = iwl_mvm_rm_sta_common(mvm, mvmvif->deflink.mcast_sta.sta_id); 2663 if (ret) 2664 IWL_WARN(mvm, "Failed sending remove station\n"); 2665 2666 return ret; 2667 } 2668 2669 static void iwl_mvm_sync_rxq_del_ba(struct iwl_mvm *mvm, u8 baid) 2670 { 2671 struct iwl_mvm_delba_data notif = { 2672 .baid = baid, 2673 }; 2674 2675 iwl_mvm_sync_rx_queues_internal(mvm, IWL_MVM_RXQ_NOTIF_DEL_BA, true, 2676 ¬if, sizeof(notif)); 2677 }; 2678 2679 static void iwl_mvm_free_reorder(struct iwl_mvm *mvm, 2680 struct iwl_mvm_baid_data *data) 2681 { 2682 int i; 2683 2684 iwl_mvm_sync_rxq_del_ba(mvm, data->baid); 2685 2686 for (i = 0; i < mvm->trans->num_rx_queues; i++) { 2687 int j; 2688 struct iwl_mvm_reorder_buffer *reorder_buf = 2689 &data->reorder_buf[i]; 2690 struct iwl_mvm_reorder_buf_entry *entries = 2691 &data->entries[i * data->entries_per_queue]; 2692 2693 spin_lock_bh(&reorder_buf->lock); 2694 if (likely(!reorder_buf->num_stored)) { 2695 spin_unlock_bh(&reorder_buf->lock); 2696 continue; 2697 } 2698 2699 /* 2700 * This shouldn't happen in regular DELBA since the internal 2701 * delBA notification should trigger a release of all frames in 2702 * the reorder buffer. 2703 */ 2704 WARN_ON(1); 2705 2706 for (j = 0; j < reorder_buf->buf_size; j++) 2707 __skb_queue_purge(&entries[j].e.frames); 2708 /* 2709 * Prevent timer re-arm. This prevents a very far fetched case 2710 * where we timed out on the notification. There may be prior 2711 * RX frames pending in the RX queue before the notification 2712 * that might get processed between now and the actual deletion 2713 * and we would re-arm the timer although we are deleting the 2714 * reorder buffer. 2715 */ 2716 reorder_buf->removed = true; 2717 spin_unlock_bh(&reorder_buf->lock); 2718 del_timer_sync(&reorder_buf->reorder_timer); 2719 } 2720 } 2721 2722 static void iwl_mvm_init_reorder_buffer(struct iwl_mvm *mvm, 2723 struct iwl_mvm_baid_data *data, 2724 u16 ssn, u16 buf_size) 2725 { 2726 int i; 2727 2728 for (i = 0; i < mvm->trans->num_rx_queues; i++) { 2729 struct iwl_mvm_reorder_buffer *reorder_buf = 2730 &data->reorder_buf[i]; 2731 struct iwl_mvm_reorder_buf_entry *entries = 2732 &data->entries[i * data->entries_per_queue]; 2733 int j; 2734 2735 reorder_buf->num_stored = 0; 2736 reorder_buf->head_sn = ssn; 2737 reorder_buf->buf_size = buf_size; 2738 /* rx reorder timer */ 2739 timer_setup(&reorder_buf->reorder_timer, 2740 iwl_mvm_reorder_timer_expired, 0); 2741 spin_lock_init(&reorder_buf->lock); 2742 reorder_buf->mvm = mvm; 2743 reorder_buf->queue = i; 2744 reorder_buf->valid = false; 2745 for (j = 0; j < reorder_buf->buf_size; j++) 2746 __skb_queue_head_init(&entries[j].e.frames); 2747 } 2748 } 2749 2750 static int iwl_mvm_fw_baid_op_sta(struct iwl_mvm *mvm, 2751 struct ieee80211_sta *sta, 2752 bool start, int tid, u16 ssn, 2753 u16 buf_size) 2754 { 2755 struct iwl_mvm_sta *mvm_sta = iwl_mvm_sta_from_mac80211(sta); 2756 struct iwl_mvm_add_sta_cmd cmd = { 2757 .mac_id_n_color = cpu_to_le32(mvm_sta->mac_id_n_color), 2758 .sta_id = mvm_sta->deflink.sta_id, 2759 .add_modify = STA_MODE_MODIFY, 2760 }; 2761 u32 status; 2762 int ret; 2763 2764 if (start) { 2765 cmd.add_immediate_ba_tid = tid; 2766 cmd.add_immediate_ba_ssn = cpu_to_le16(ssn); 2767 cmd.rx_ba_window = cpu_to_le16(buf_size); 2768 cmd.modify_mask = STA_MODIFY_ADD_BA_TID; 2769 } else { 2770 cmd.remove_immediate_ba_tid = tid; 2771 cmd.modify_mask = STA_MODIFY_REMOVE_BA_TID; 2772 } 2773 2774 status = ADD_STA_SUCCESS; 2775 ret = iwl_mvm_send_cmd_pdu_status(mvm, ADD_STA, 2776 iwl_mvm_add_sta_cmd_size(mvm), 2777 &cmd, &status); 2778 if (ret) 2779 return ret; 2780 2781 switch (status & IWL_ADD_STA_STATUS_MASK) { 2782 case ADD_STA_SUCCESS: 2783 IWL_DEBUG_HT(mvm, "RX BA Session %sed in fw\n", 2784 start ? "start" : "stopp"); 2785 if (WARN_ON(start && iwl_mvm_has_new_rx_api(mvm) && 2786 !(status & IWL_ADD_STA_BAID_VALID_MASK))) 2787 return -EINVAL; 2788 return u32_get_bits(status, IWL_ADD_STA_BAID_MASK); 2789 case ADD_STA_IMMEDIATE_BA_FAILURE: 2790 IWL_WARN(mvm, "RX BA Session refused by fw\n"); 2791 return -ENOSPC; 2792 default: 2793 IWL_ERR(mvm, "RX BA Session failed %sing, status 0x%x\n", 2794 start ? "start" : "stopp", status); 2795 return -EIO; 2796 } 2797 } 2798 2799 static int iwl_mvm_fw_baid_op_cmd(struct iwl_mvm *mvm, 2800 struct ieee80211_sta *sta, 2801 bool start, int tid, u16 ssn, 2802 u16 buf_size, int baid) 2803 { 2804 struct iwl_rx_baid_cfg_cmd cmd = { 2805 .action = start ? cpu_to_le32(IWL_RX_BAID_ACTION_ADD) : 2806 cpu_to_le32(IWL_RX_BAID_ACTION_REMOVE), 2807 }; 2808 u32 cmd_id = WIDE_ID(DATA_PATH_GROUP, RX_BAID_ALLOCATION_CONFIG_CMD); 2809 int ret; 2810 2811 BUILD_BUG_ON(sizeof(struct iwl_rx_baid_cfg_resp) != sizeof(baid)); 2812 2813 if (start) { 2814 cmd.alloc.sta_id_mask = 2815 cpu_to_le32(iwl_mvm_sta_fw_id_mask(mvm, sta, -1)); 2816 cmd.alloc.tid = tid; 2817 cmd.alloc.ssn = cpu_to_le16(ssn); 2818 cmd.alloc.win_size = cpu_to_le16(buf_size); 2819 baid = -EIO; 2820 } else if (iwl_fw_lookup_cmd_ver(mvm->fw, cmd_id, 1) == 1) { 2821 cmd.remove_v1.baid = cpu_to_le32(baid); 2822 BUILD_BUG_ON(sizeof(cmd.remove_v1) > sizeof(cmd.remove)); 2823 } else { 2824 cmd.remove.sta_id_mask = 2825 cpu_to_le32(iwl_mvm_sta_fw_id_mask(mvm, sta, -1)); 2826 cmd.remove.tid = cpu_to_le32(tid); 2827 } 2828 2829 ret = iwl_mvm_send_cmd_pdu_status(mvm, cmd_id, sizeof(cmd), 2830 &cmd, &baid); 2831 if (ret) 2832 return ret; 2833 2834 if (!start) { 2835 /* ignore firmware baid on remove */ 2836 baid = 0; 2837 } 2838 2839 IWL_DEBUG_HT(mvm, "RX BA Session %sed in fw\n", 2840 start ? "start" : "stopp"); 2841 2842 if (baid < 0 || baid >= ARRAY_SIZE(mvm->baid_map)) 2843 return -EINVAL; 2844 2845 return baid; 2846 } 2847 2848 static int iwl_mvm_fw_baid_op(struct iwl_mvm *mvm, struct ieee80211_sta *sta, 2849 bool start, int tid, u16 ssn, u16 buf_size, 2850 int baid) 2851 { 2852 if (fw_has_capa(&mvm->fw->ucode_capa, 2853 IWL_UCODE_TLV_CAPA_BAID_ML_SUPPORT)) 2854 return iwl_mvm_fw_baid_op_cmd(mvm, sta, start, 2855 tid, ssn, buf_size, baid); 2856 2857 return iwl_mvm_fw_baid_op_sta(mvm, sta, start, 2858 tid, ssn, buf_size); 2859 } 2860 2861 int iwl_mvm_sta_rx_agg(struct iwl_mvm *mvm, struct ieee80211_sta *sta, 2862 int tid, u16 ssn, bool start, u16 buf_size, u16 timeout) 2863 { 2864 struct iwl_mvm_sta *mvm_sta = iwl_mvm_sta_from_mac80211(sta); 2865 struct iwl_mvm_baid_data *baid_data = NULL; 2866 int ret, baid; 2867 u32 max_ba_id_sessions = iwl_mvm_has_new_tx_api(mvm) ? IWL_MAX_BAID : 2868 IWL_MAX_BAID_OLD; 2869 2870 lockdep_assert_held(&mvm->mutex); 2871 2872 if (start && mvm->rx_ba_sessions >= max_ba_id_sessions) { 2873 IWL_WARN(mvm, "Not enough RX BA SESSIONS\n"); 2874 return -ENOSPC; 2875 } 2876 2877 if (iwl_mvm_has_new_rx_api(mvm) && start) { 2878 u16 reorder_buf_size = buf_size * sizeof(baid_data->entries[0]); 2879 2880 /* sparse doesn't like the __align() so don't check */ 2881 #ifndef __CHECKER__ 2882 /* 2883 * The division below will be OK if either the cache line size 2884 * can be divided by the entry size (ALIGN will round up) or if 2885 * if the entry size can be divided by the cache line size, in 2886 * which case the ALIGN() will do nothing. 2887 */ 2888 BUILD_BUG_ON(SMP_CACHE_BYTES % sizeof(baid_data->entries[0]) && 2889 sizeof(baid_data->entries[0]) % SMP_CACHE_BYTES); 2890 #endif 2891 2892 /* 2893 * Upward align the reorder buffer size to fill an entire cache 2894 * line for each queue, to avoid sharing cache lines between 2895 * different queues. 2896 */ 2897 reorder_buf_size = ALIGN(reorder_buf_size, SMP_CACHE_BYTES); 2898 2899 /* 2900 * Allocate here so if allocation fails we can bail out early 2901 * before starting the BA session in the firmware 2902 */ 2903 baid_data = kzalloc(sizeof(*baid_data) + 2904 mvm->trans->num_rx_queues * 2905 reorder_buf_size, 2906 GFP_KERNEL); 2907 if (!baid_data) 2908 return -ENOMEM; 2909 2910 /* 2911 * This division is why we need the above BUILD_BUG_ON(), 2912 * if that doesn't hold then this will not be right. 2913 */ 2914 baid_data->entries_per_queue = 2915 reorder_buf_size / sizeof(baid_data->entries[0]); 2916 } 2917 2918 if (iwl_mvm_has_new_rx_api(mvm) && !start) { 2919 baid = mvm_sta->tid_to_baid[tid]; 2920 } else { 2921 /* we don't really need it in this case */ 2922 baid = -1; 2923 } 2924 2925 /* Don't send command to remove (start=0) BAID during restart */ 2926 if (start || !test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status)) 2927 baid = iwl_mvm_fw_baid_op(mvm, sta, start, tid, ssn, buf_size, 2928 baid); 2929 2930 if (baid < 0) { 2931 ret = baid; 2932 goto out_free; 2933 } 2934 2935 if (start) { 2936 mvm->rx_ba_sessions++; 2937 2938 if (!iwl_mvm_has_new_rx_api(mvm)) 2939 return 0; 2940 2941 baid_data->baid = baid; 2942 baid_data->timeout = timeout; 2943 baid_data->last_rx = jiffies; 2944 baid_data->rcu_ptr = &mvm->baid_map[baid]; 2945 timer_setup(&baid_data->session_timer, 2946 iwl_mvm_rx_agg_session_expired, 0); 2947 baid_data->mvm = mvm; 2948 baid_data->tid = tid; 2949 baid_data->sta_mask = iwl_mvm_sta_fw_id_mask(mvm, sta, -1); 2950 2951 mvm_sta->tid_to_baid[tid] = baid; 2952 if (timeout) 2953 mod_timer(&baid_data->session_timer, 2954 TU_TO_EXP_TIME(timeout * 2)); 2955 2956 iwl_mvm_init_reorder_buffer(mvm, baid_data, ssn, buf_size); 2957 /* 2958 * protect the BA data with RCU to cover a case where our 2959 * internal RX sync mechanism will timeout (not that it's 2960 * supposed to happen) and we will free the session data while 2961 * RX is being processed in parallel 2962 */ 2963 IWL_DEBUG_HT(mvm, "Sta %d(%d) is assigned to BAID %d\n", 2964 mvm_sta->deflink.sta_id, tid, baid); 2965 WARN_ON(rcu_access_pointer(mvm->baid_map[baid])); 2966 rcu_assign_pointer(mvm->baid_map[baid], baid_data); 2967 } else { 2968 baid = mvm_sta->tid_to_baid[tid]; 2969 2970 if (mvm->rx_ba_sessions > 0) 2971 /* check that restart flow didn't zero the counter */ 2972 mvm->rx_ba_sessions--; 2973 if (!iwl_mvm_has_new_rx_api(mvm)) 2974 return 0; 2975 2976 if (WARN_ON(baid == IWL_RX_REORDER_DATA_INVALID_BAID)) 2977 return -EINVAL; 2978 2979 baid_data = rcu_access_pointer(mvm->baid_map[baid]); 2980 if (WARN_ON(!baid_data)) 2981 return -EINVAL; 2982 2983 /* synchronize all rx queues so we can safely delete */ 2984 iwl_mvm_free_reorder(mvm, baid_data); 2985 timer_shutdown_sync(&baid_data->session_timer); 2986 RCU_INIT_POINTER(mvm->baid_map[baid], NULL); 2987 kfree_rcu(baid_data, rcu_head); 2988 IWL_DEBUG_HT(mvm, "BAID %d is free\n", baid); 2989 2990 /* 2991 * After we've deleted it, do another queue sync 2992 * so if an IWL_MVM_RXQ_NSSN_SYNC was concurrently 2993 * running it won't find a new session in the old 2994 * BAID. It can find the NULL pointer for the BAID, 2995 * but we must not have it find a different session. 2996 */ 2997 iwl_mvm_sync_rx_queues_internal(mvm, IWL_MVM_RXQ_EMPTY, 2998 true, NULL, 0); 2999 } 3000 return 0; 3001 3002 out_free: 3003 kfree(baid_data); 3004 return ret; 3005 } 3006 3007 int iwl_mvm_sta_tx_agg(struct iwl_mvm *mvm, struct ieee80211_sta *sta, 3008 int tid, u8 queue, bool start) 3009 { 3010 struct iwl_mvm_sta *mvm_sta = iwl_mvm_sta_from_mac80211(sta); 3011 struct iwl_mvm_add_sta_cmd cmd = {}; 3012 int ret; 3013 u32 status; 3014 3015 lockdep_assert_held(&mvm->mutex); 3016 3017 if (start) { 3018 mvm_sta->tfd_queue_msk |= BIT(queue); 3019 mvm_sta->tid_disable_agg &= ~BIT(tid); 3020 } else { 3021 /* In DQA-mode the queue isn't removed on agg termination */ 3022 mvm_sta->tid_disable_agg |= BIT(tid); 3023 } 3024 3025 cmd.mac_id_n_color = cpu_to_le32(mvm_sta->mac_id_n_color); 3026 cmd.sta_id = mvm_sta->deflink.sta_id; 3027 cmd.add_modify = STA_MODE_MODIFY; 3028 if (!iwl_mvm_has_new_tx_api(mvm)) 3029 cmd.modify_mask = STA_MODIFY_QUEUES; 3030 cmd.modify_mask |= STA_MODIFY_TID_DISABLE_TX; 3031 cmd.tfd_queue_msk = cpu_to_le32(mvm_sta->tfd_queue_msk); 3032 cmd.tid_disable_tx = cpu_to_le16(mvm_sta->tid_disable_agg); 3033 3034 status = ADD_STA_SUCCESS; 3035 ret = iwl_mvm_send_cmd_pdu_status(mvm, ADD_STA, 3036 iwl_mvm_add_sta_cmd_size(mvm), 3037 &cmd, &status); 3038 if (ret) 3039 return ret; 3040 3041 switch (status & IWL_ADD_STA_STATUS_MASK) { 3042 case ADD_STA_SUCCESS: 3043 break; 3044 default: 3045 ret = -EIO; 3046 IWL_ERR(mvm, "TX BA Session failed %sing, status 0x%x\n", 3047 start ? "start" : "stopp", status); 3048 break; 3049 } 3050 3051 return ret; 3052 } 3053 3054 const u8 tid_to_mac80211_ac[] = { 3055 IEEE80211_AC_BE, 3056 IEEE80211_AC_BK, 3057 IEEE80211_AC_BK, 3058 IEEE80211_AC_BE, 3059 IEEE80211_AC_VI, 3060 IEEE80211_AC_VI, 3061 IEEE80211_AC_VO, 3062 IEEE80211_AC_VO, 3063 IEEE80211_AC_VO, /* We treat MGMT as TID 8, which is set as AC_VO */ 3064 }; 3065 3066 static const u8 tid_to_ucode_ac[] = { 3067 AC_BE, 3068 AC_BK, 3069 AC_BK, 3070 AC_BE, 3071 AC_VI, 3072 AC_VI, 3073 AC_VO, 3074 AC_VO, 3075 }; 3076 3077 int iwl_mvm_sta_tx_agg_start(struct iwl_mvm *mvm, struct ieee80211_vif *vif, 3078 struct ieee80211_sta *sta, u16 tid, u16 *ssn) 3079 { 3080 struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta); 3081 struct iwl_mvm_tid_data *tid_data; 3082 u16 normalized_ssn; 3083 u16 txq_id; 3084 int ret; 3085 3086 if (WARN_ON_ONCE(tid >= IWL_MAX_TID_COUNT)) 3087 return -EINVAL; 3088 3089 if (mvmsta->tid_data[tid].state != IWL_AGG_QUEUED && 3090 mvmsta->tid_data[tid].state != IWL_AGG_OFF) { 3091 IWL_ERR(mvm, 3092 "Start AGG when state is not IWL_AGG_QUEUED or IWL_AGG_OFF %d!\n", 3093 mvmsta->tid_data[tid].state); 3094 return -ENXIO; 3095 } 3096 3097 lockdep_assert_held(&mvm->mutex); 3098 3099 if (mvmsta->tid_data[tid].txq_id == IWL_MVM_INVALID_QUEUE && 3100 iwl_mvm_has_new_tx_api(mvm)) { 3101 u8 ac = tid_to_mac80211_ac[tid]; 3102 3103 ret = iwl_mvm_sta_alloc_queue_tvqm(mvm, sta, ac, tid); 3104 if (ret) 3105 return ret; 3106 } 3107 3108 spin_lock_bh(&mvmsta->lock); 3109 3110 /* 3111 * Note the possible cases: 3112 * 1. An enabled TXQ - TXQ needs to become agg'ed 3113 * 2. The TXQ hasn't yet been enabled, so find a free one and mark 3114 * it as reserved 3115 */ 3116 txq_id = mvmsta->tid_data[tid].txq_id; 3117 if (txq_id == IWL_MVM_INVALID_QUEUE) { 3118 ret = iwl_mvm_find_free_queue(mvm, mvmsta->deflink.sta_id, 3119 IWL_MVM_DQA_MIN_DATA_QUEUE, 3120 IWL_MVM_DQA_MAX_DATA_QUEUE); 3121 if (ret < 0) { 3122 IWL_ERR(mvm, "Failed to allocate agg queue\n"); 3123 goto out; 3124 } 3125 3126 txq_id = ret; 3127 3128 /* TXQ hasn't yet been enabled, so mark it only as reserved */ 3129 mvm->queue_info[txq_id].status = IWL_MVM_QUEUE_RESERVED; 3130 } else if (WARN_ON(txq_id >= IWL_MAX_HW_QUEUES)) { 3131 ret = -ENXIO; 3132 IWL_ERR(mvm, "tid_id %d out of range (0, %d)!\n", 3133 tid, IWL_MAX_HW_QUEUES - 1); 3134 goto out; 3135 3136 } else if (unlikely(mvm->queue_info[txq_id].status == 3137 IWL_MVM_QUEUE_SHARED)) { 3138 ret = -ENXIO; 3139 IWL_DEBUG_TX_QUEUES(mvm, 3140 "Can't start tid %d agg on shared queue!\n", 3141 tid); 3142 goto out; 3143 } 3144 3145 IWL_DEBUG_TX_QUEUES(mvm, 3146 "AGG for tid %d will be on queue #%d\n", 3147 tid, txq_id); 3148 3149 tid_data = &mvmsta->tid_data[tid]; 3150 tid_data->ssn = IEEE80211_SEQ_TO_SN(tid_data->seq_number); 3151 tid_data->txq_id = txq_id; 3152 *ssn = tid_data->ssn; 3153 3154 IWL_DEBUG_TX_QUEUES(mvm, 3155 "Start AGG: sta %d tid %d queue %d - ssn = %d, next_recl = %d\n", 3156 mvmsta->deflink.sta_id, tid, txq_id, 3157 tid_data->ssn, 3158 tid_data->next_reclaimed); 3159 3160 /* 3161 * In 22000 HW, the next_reclaimed index is only 8 bit, so we'll need 3162 * to align the wrap around of ssn so we compare relevant values. 3163 */ 3164 normalized_ssn = tid_data->ssn; 3165 if (mvm->trans->trans_cfg->gen2) 3166 normalized_ssn &= 0xff; 3167 3168 if (normalized_ssn == tid_data->next_reclaimed) { 3169 tid_data->state = IWL_AGG_STARTING; 3170 ret = IEEE80211_AMPDU_TX_START_IMMEDIATE; 3171 } else { 3172 tid_data->state = IWL_EMPTYING_HW_QUEUE_ADDBA; 3173 ret = IEEE80211_AMPDU_TX_START_DELAY_ADDBA; 3174 } 3175 3176 out: 3177 spin_unlock_bh(&mvmsta->lock); 3178 3179 return ret; 3180 } 3181 3182 int iwl_mvm_sta_tx_agg_oper(struct iwl_mvm *mvm, struct ieee80211_vif *vif, 3183 struct ieee80211_sta *sta, u16 tid, u16 buf_size, 3184 bool amsdu) 3185 { 3186 struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta); 3187 struct iwl_mvm_tid_data *tid_data = &mvmsta->tid_data[tid]; 3188 unsigned int wdg_timeout = 3189 iwl_mvm_get_wd_timeout(mvm, vif, sta->tdls, false); 3190 int queue, ret; 3191 bool alloc_queue = true; 3192 enum iwl_mvm_queue_status queue_status; 3193 u16 ssn; 3194 3195 struct iwl_trans_txq_scd_cfg cfg = { 3196 .sta_id = mvmsta->deflink.sta_id, 3197 .tid = tid, 3198 .frame_limit = buf_size, 3199 .aggregate = true, 3200 }; 3201 3202 /* 3203 * When FW supports TLC_OFFLOAD, it also implements Tx aggregation 3204 * manager, so this function should never be called in this case. 3205 */ 3206 if (WARN_ON_ONCE(iwl_mvm_has_tlc_offload(mvm))) 3207 return -EINVAL; 3208 3209 BUILD_BUG_ON((sizeof(mvmsta->agg_tids) * BITS_PER_BYTE) 3210 != IWL_MAX_TID_COUNT); 3211 3212 spin_lock_bh(&mvmsta->lock); 3213 ssn = tid_data->ssn; 3214 queue = tid_data->txq_id; 3215 tid_data->state = IWL_AGG_ON; 3216 mvmsta->agg_tids |= BIT(tid); 3217 tid_data->ssn = 0xffff; 3218 tid_data->amsdu_in_ampdu_allowed = amsdu; 3219 spin_unlock_bh(&mvmsta->lock); 3220 3221 if (iwl_mvm_has_new_tx_api(mvm)) { 3222 /* 3223 * If there is no queue for this tid, iwl_mvm_sta_tx_agg_start() 3224 * would have failed, so if we are here there is no need to 3225 * allocate a queue. 3226 * However, if aggregation size is different than the default 3227 * size, the scheduler should be reconfigured. 3228 * We cannot do this with the new TX API, so return unsupported 3229 * for now, until it will be offloaded to firmware.. 3230 * Note that if SCD default value changes - this condition 3231 * should be updated as well. 3232 */ 3233 if (buf_size < IWL_FRAME_LIMIT) 3234 return -ENOTSUPP; 3235 3236 ret = iwl_mvm_sta_tx_agg(mvm, sta, tid, queue, true); 3237 if (ret) 3238 return -EIO; 3239 goto out; 3240 } 3241 3242 cfg.fifo = iwl_mvm_ac_to_tx_fifo[tid_to_mac80211_ac[tid]]; 3243 3244 queue_status = mvm->queue_info[queue].status; 3245 3246 /* Maybe there is no need to even alloc a queue... */ 3247 if (mvm->queue_info[queue].status == IWL_MVM_QUEUE_READY) 3248 alloc_queue = false; 3249 3250 /* 3251 * Only reconfig the SCD for the queue if the window size has 3252 * changed from current (become smaller) 3253 */ 3254 if (!alloc_queue && buf_size < IWL_FRAME_LIMIT) { 3255 /* 3256 * If reconfiguring an existing queue, it first must be 3257 * drained 3258 */ 3259 ret = iwl_trans_wait_tx_queues_empty(mvm->trans, 3260 BIT(queue)); 3261 if (ret) { 3262 IWL_ERR(mvm, 3263 "Error draining queue before reconfig\n"); 3264 return ret; 3265 } 3266 3267 ret = iwl_mvm_reconfig_scd(mvm, queue, cfg.fifo, 3268 mvmsta->deflink.sta_id, tid, 3269 buf_size, ssn); 3270 if (ret) { 3271 IWL_ERR(mvm, 3272 "Error reconfiguring TXQ #%d\n", queue); 3273 return ret; 3274 } 3275 } 3276 3277 if (alloc_queue) 3278 iwl_mvm_enable_txq(mvm, sta, queue, ssn, 3279 &cfg, wdg_timeout); 3280 3281 /* Send ADD_STA command to enable aggs only if the queue isn't shared */ 3282 if (queue_status != IWL_MVM_QUEUE_SHARED) { 3283 ret = iwl_mvm_sta_tx_agg(mvm, sta, tid, queue, true); 3284 if (ret) 3285 return -EIO; 3286 } 3287 3288 /* No need to mark as reserved */ 3289 mvm->queue_info[queue].status = IWL_MVM_QUEUE_READY; 3290 3291 out: 3292 /* 3293 * Even though in theory the peer could have different 3294 * aggregation reorder buffer sizes for different sessions, 3295 * our ucode doesn't allow for that and has a global limit 3296 * for each station. Therefore, use the minimum of all the 3297 * aggregation sessions and our default value. 3298 */ 3299 mvmsta->deflink.lq_sta.rs_drv.pers.max_agg_bufsize = 3300 min(mvmsta->deflink.lq_sta.rs_drv.pers.max_agg_bufsize, 3301 buf_size); 3302 mvmsta->deflink.lq_sta.rs_drv.lq.agg_frame_cnt_limit = 3303 mvmsta->deflink.lq_sta.rs_drv.pers.max_agg_bufsize; 3304 3305 IWL_DEBUG_HT(mvm, "Tx aggregation enabled on ra = %pM tid = %d\n", 3306 sta->addr, tid); 3307 3308 return iwl_mvm_send_lq_cmd(mvm, &mvmsta->deflink.lq_sta.rs_drv.lq); 3309 } 3310 3311 static void iwl_mvm_unreserve_agg_queue(struct iwl_mvm *mvm, 3312 struct iwl_mvm_sta *mvmsta, 3313 struct iwl_mvm_tid_data *tid_data) 3314 { 3315 u16 txq_id = tid_data->txq_id; 3316 3317 lockdep_assert_held(&mvm->mutex); 3318 3319 if (iwl_mvm_has_new_tx_api(mvm)) 3320 return; 3321 3322 /* 3323 * The TXQ is marked as reserved only if no traffic came through yet 3324 * This means no traffic has been sent on this TID (agg'd or not), so 3325 * we no longer have use for the queue. Since it hasn't even been 3326 * allocated through iwl_mvm_enable_txq, so we can just mark it back as 3327 * free. 3328 */ 3329 if (mvm->queue_info[txq_id].status == IWL_MVM_QUEUE_RESERVED) { 3330 mvm->queue_info[txq_id].status = IWL_MVM_QUEUE_FREE; 3331 tid_data->txq_id = IWL_MVM_INVALID_QUEUE; 3332 } 3333 } 3334 3335 int iwl_mvm_sta_tx_agg_stop(struct iwl_mvm *mvm, struct ieee80211_vif *vif, 3336 struct ieee80211_sta *sta, u16 tid) 3337 { 3338 struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta); 3339 struct iwl_mvm_tid_data *tid_data = &mvmsta->tid_data[tid]; 3340 u16 txq_id; 3341 int err; 3342 3343 /* 3344 * If mac80211 is cleaning its state, then say that we finished since 3345 * our state has been cleared anyway. 3346 */ 3347 if (test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status)) { 3348 ieee80211_stop_tx_ba_cb_irqsafe(vif, sta->addr, tid); 3349 return 0; 3350 } 3351 3352 spin_lock_bh(&mvmsta->lock); 3353 3354 txq_id = tid_data->txq_id; 3355 3356 IWL_DEBUG_TX_QUEUES(mvm, "Stop AGG: sta %d tid %d q %d state %d\n", 3357 mvmsta->deflink.sta_id, tid, txq_id, 3358 tid_data->state); 3359 3360 mvmsta->agg_tids &= ~BIT(tid); 3361 3362 iwl_mvm_unreserve_agg_queue(mvm, mvmsta, tid_data); 3363 3364 switch (tid_data->state) { 3365 case IWL_AGG_ON: 3366 tid_data->ssn = IEEE80211_SEQ_TO_SN(tid_data->seq_number); 3367 3368 IWL_DEBUG_TX_QUEUES(mvm, 3369 "ssn = %d, next_recl = %d\n", 3370 tid_data->ssn, tid_data->next_reclaimed); 3371 3372 tid_data->ssn = 0xffff; 3373 tid_data->state = IWL_AGG_OFF; 3374 spin_unlock_bh(&mvmsta->lock); 3375 3376 ieee80211_stop_tx_ba_cb_irqsafe(vif, sta->addr, tid); 3377 3378 iwl_mvm_sta_tx_agg(mvm, sta, tid, txq_id, false); 3379 return 0; 3380 case IWL_AGG_STARTING: 3381 case IWL_EMPTYING_HW_QUEUE_ADDBA: 3382 /* 3383 * The agg session has been stopped before it was set up. This 3384 * can happen when the AddBA timer times out for example. 3385 */ 3386 3387 /* No barriers since we are under mutex */ 3388 lockdep_assert_held(&mvm->mutex); 3389 3390 ieee80211_stop_tx_ba_cb_irqsafe(vif, sta->addr, tid); 3391 tid_data->state = IWL_AGG_OFF; 3392 err = 0; 3393 break; 3394 default: 3395 IWL_ERR(mvm, 3396 "Stopping AGG while state not ON or starting for %d on %d (%d)\n", 3397 mvmsta->deflink.sta_id, tid, tid_data->state); 3398 IWL_ERR(mvm, 3399 "\ttid_data->txq_id = %d\n", tid_data->txq_id); 3400 err = -EINVAL; 3401 } 3402 3403 spin_unlock_bh(&mvmsta->lock); 3404 3405 return err; 3406 } 3407 3408 int iwl_mvm_sta_tx_agg_flush(struct iwl_mvm *mvm, struct ieee80211_vif *vif, 3409 struct ieee80211_sta *sta, u16 tid) 3410 { 3411 struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta); 3412 struct iwl_mvm_tid_data *tid_data = &mvmsta->tid_data[tid]; 3413 u16 txq_id; 3414 enum iwl_mvm_agg_state old_state; 3415 3416 /* 3417 * First set the agg state to OFF to avoid calling 3418 * ieee80211_stop_tx_ba_cb in iwl_mvm_check_ratid_empty. 3419 */ 3420 spin_lock_bh(&mvmsta->lock); 3421 txq_id = tid_data->txq_id; 3422 IWL_DEBUG_TX_QUEUES(mvm, "Flush AGG: sta %d tid %d q %d state %d\n", 3423 mvmsta->deflink.sta_id, tid, txq_id, 3424 tid_data->state); 3425 old_state = tid_data->state; 3426 tid_data->state = IWL_AGG_OFF; 3427 mvmsta->agg_tids &= ~BIT(tid); 3428 spin_unlock_bh(&mvmsta->lock); 3429 3430 iwl_mvm_unreserve_agg_queue(mvm, mvmsta, tid_data); 3431 3432 if (old_state >= IWL_AGG_ON) { 3433 iwl_mvm_drain_sta(mvm, mvmsta, true); 3434 3435 if (iwl_mvm_has_new_tx_api(mvm)) { 3436 if (iwl_mvm_flush_sta_tids(mvm, mvmsta->deflink.sta_id, 3437 BIT(tid))) 3438 IWL_ERR(mvm, "Couldn't flush the AGG queue\n"); 3439 iwl_trans_wait_txq_empty(mvm->trans, txq_id); 3440 } else { 3441 if (iwl_mvm_flush_tx_path(mvm, BIT(txq_id))) 3442 IWL_ERR(mvm, "Couldn't flush the AGG queue\n"); 3443 iwl_trans_wait_tx_queues_empty(mvm->trans, BIT(txq_id)); 3444 } 3445 3446 iwl_mvm_drain_sta(mvm, mvmsta, false); 3447 3448 iwl_mvm_sta_tx_agg(mvm, sta, tid, txq_id, false); 3449 } 3450 3451 return 0; 3452 } 3453 3454 static int iwl_mvm_set_fw_key_idx(struct iwl_mvm *mvm) 3455 { 3456 int i, max = -1, max_offs = -1; 3457 3458 lockdep_assert_held(&mvm->mutex); 3459 3460 /* Pick the unused key offset with the highest 'deleted' 3461 * counter. Every time a key is deleted, all the counters 3462 * are incremented and the one that was just deleted is 3463 * reset to zero. Thus, the highest counter is the one 3464 * that was deleted longest ago. Pick that one. 3465 */ 3466 for (i = 0; i < STA_KEY_MAX_NUM; i++) { 3467 if (test_bit(i, mvm->fw_key_table)) 3468 continue; 3469 if (mvm->fw_key_deleted[i] > max) { 3470 max = mvm->fw_key_deleted[i]; 3471 max_offs = i; 3472 } 3473 } 3474 3475 if (max_offs < 0) 3476 return STA_KEY_IDX_INVALID; 3477 3478 return max_offs; 3479 } 3480 3481 static struct iwl_mvm_sta *iwl_mvm_get_key_sta(struct iwl_mvm *mvm, 3482 struct ieee80211_vif *vif, 3483 struct ieee80211_sta *sta) 3484 { 3485 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 3486 3487 if (sta) 3488 return iwl_mvm_sta_from_mac80211(sta); 3489 3490 /* 3491 * The device expects GTKs for station interfaces to be 3492 * installed as GTKs for the AP station. If we have no 3493 * station ID, then use AP's station ID. 3494 */ 3495 if (vif->type == NL80211_IFTYPE_STATION && 3496 mvmvif->deflink.ap_sta_id != IWL_MVM_INVALID_STA) { 3497 u8 sta_id = mvmvif->deflink.ap_sta_id; 3498 3499 sta = rcu_dereference_check(mvm->fw_id_to_mac_id[sta_id], 3500 lockdep_is_held(&mvm->mutex)); 3501 3502 /* 3503 * It is possible that the 'sta' parameter is NULL, 3504 * for example when a GTK is removed - the sta_id will then 3505 * be the AP ID, and no station was passed by mac80211. 3506 */ 3507 if (IS_ERR_OR_NULL(sta)) 3508 return NULL; 3509 3510 return iwl_mvm_sta_from_mac80211(sta); 3511 } 3512 3513 return NULL; 3514 } 3515 3516 static int iwl_mvm_pn_cmp(const u8 *pn1, const u8 *pn2, int len) 3517 { 3518 int i; 3519 3520 for (i = len - 1; i >= 0; i--) { 3521 if (pn1[i] > pn2[i]) 3522 return 1; 3523 if (pn1[i] < pn2[i]) 3524 return -1; 3525 } 3526 3527 return 0; 3528 } 3529 3530 static int iwl_mvm_send_sta_key(struct iwl_mvm *mvm, 3531 u32 sta_id, 3532 struct ieee80211_key_conf *key, bool mcast, 3533 u32 tkip_iv32, u16 *tkip_p1k, u32 cmd_flags, 3534 u8 key_offset, bool mfp) 3535 { 3536 union { 3537 struct iwl_mvm_add_sta_key_cmd_v1 cmd_v1; 3538 struct iwl_mvm_add_sta_key_cmd cmd; 3539 } u = {}; 3540 __le16 key_flags; 3541 int ret; 3542 u32 status; 3543 u16 keyidx; 3544 u64 pn = 0; 3545 int i, size; 3546 bool new_api = fw_has_api(&mvm->fw->ucode_capa, 3547 IWL_UCODE_TLV_API_TKIP_MIC_KEYS); 3548 int api_ver = iwl_fw_lookup_cmd_ver(mvm->fw, ADD_STA_KEY, 3549 new_api ? 2 : 1); 3550 3551 if (sta_id == IWL_MVM_INVALID_STA) 3552 return -EINVAL; 3553 3554 keyidx = (key->keyidx << STA_KEY_FLG_KEYID_POS) & 3555 STA_KEY_FLG_KEYID_MSK; 3556 key_flags = cpu_to_le16(keyidx); 3557 key_flags |= cpu_to_le16(STA_KEY_FLG_WEP_KEY_MAP); 3558 3559 switch (key->cipher) { 3560 case WLAN_CIPHER_SUITE_TKIP: 3561 key_flags |= cpu_to_le16(STA_KEY_FLG_TKIP); 3562 if (api_ver >= 2) { 3563 memcpy((void *)&u.cmd.tx_mic_key, 3564 &key->key[NL80211_TKIP_DATA_OFFSET_TX_MIC_KEY], 3565 IWL_MIC_KEY_SIZE); 3566 3567 memcpy((void *)&u.cmd.rx_mic_key, 3568 &key->key[NL80211_TKIP_DATA_OFFSET_RX_MIC_KEY], 3569 IWL_MIC_KEY_SIZE); 3570 pn = atomic64_read(&key->tx_pn); 3571 3572 } else { 3573 u.cmd_v1.tkip_rx_tsc_byte2 = tkip_iv32; 3574 for (i = 0; i < 5; i++) 3575 u.cmd_v1.tkip_rx_ttak[i] = 3576 cpu_to_le16(tkip_p1k[i]); 3577 } 3578 memcpy(u.cmd.common.key, key->key, key->keylen); 3579 break; 3580 case WLAN_CIPHER_SUITE_CCMP: 3581 key_flags |= cpu_to_le16(STA_KEY_FLG_CCM); 3582 memcpy(u.cmd.common.key, key->key, key->keylen); 3583 if (api_ver >= 2) 3584 pn = atomic64_read(&key->tx_pn); 3585 break; 3586 case WLAN_CIPHER_SUITE_WEP104: 3587 key_flags |= cpu_to_le16(STA_KEY_FLG_WEP_13BYTES); 3588 fallthrough; 3589 case WLAN_CIPHER_SUITE_WEP40: 3590 key_flags |= cpu_to_le16(STA_KEY_FLG_WEP); 3591 memcpy(u.cmd.common.key + 3, key->key, key->keylen); 3592 break; 3593 case WLAN_CIPHER_SUITE_GCMP_256: 3594 key_flags |= cpu_to_le16(STA_KEY_FLG_KEY_32BYTES); 3595 fallthrough; 3596 case WLAN_CIPHER_SUITE_GCMP: 3597 key_flags |= cpu_to_le16(STA_KEY_FLG_GCMP); 3598 memcpy(u.cmd.common.key, key->key, key->keylen); 3599 if (api_ver >= 2) 3600 pn = atomic64_read(&key->tx_pn); 3601 break; 3602 default: 3603 key_flags |= cpu_to_le16(STA_KEY_FLG_EXT); 3604 memcpy(u.cmd.common.key, key->key, key->keylen); 3605 } 3606 3607 if (mcast) 3608 key_flags |= cpu_to_le16(STA_KEY_MULTICAST); 3609 if (mfp) 3610 key_flags |= cpu_to_le16(STA_KEY_MFP); 3611 3612 u.cmd.common.key_offset = key_offset; 3613 u.cmd.common.key_flags = key_flags; 3614 u.cmd.common.sta_id = sta_id; 3615 3616 if (key->cipher == WLAN_CIPHER_SUITE_TKIP) 3617 i = 0; 3618 else 3619 i = -1; 3620 3621 for (; i < IEEE80211_NUM_TIDS; i++) { 3622 struct ieee80211_key_seq seq = {}; 3623 u8 _rx_pn[IEEE80211_MAX_PN_LEN] = {}, *rx_pn = _rx_pn; 3624 int rx_pn_len = 8; 3625 /* there's a hole at 2/3 in FW format depending on version */ 3626 int hole = api_ver >= 3 ? 0 : 2; 3627 3628 ieee80211_get_key_rx_seq(key, i, &seq); 3629 3630 if (key->cipher == WLAN_CIPHER_SUITE_TKIP) { 3631 rx_pn[0] = seq.tkip.iv16; 3632 rx_pn[1] = seq.tkip.iv16 >> 8; 3633 rx_pn[2 + hole] = seq.tkip.iv32; 3634 rx_pn[3 + hole] = seq.tkip.iv32 >> 8; 3635 rx_pn[4 + hole] = seq.tkip.iv32 >> 16; 3636 rx_pn[5 + hole] = seq.tkip.iv32 >> 24; 3637 } else if (key_flags & cpu_to_le16(STA_KEY_FLG_EXT)) { 3638 rx_pn = seq.hw.seq; 3639 rx_pn_len = seq.hw.seq_len; 3640 } else { 3641 rx_pn[0] = seq.ccmp.pn[0]; 3642 rx_pn[1] = seq.ccmp.pn[1]; 3643 rx_pn[2 + hole] = seq.ccmp.pn[2]; 3644 rx_pn[3 + hole] = seq.ccmp.pn[3]; 3645 rx_pn[4 + hole] = seq.ccmp.pn[4]; 3646 rx_pn[5 + hole] = seq.ccmp.pn[5]; 3647 } 3648 3649 if (iwl_mvm_pn_cmp(rx_pn, (u8 *)&u.cmd.common.rx_secur_seq_cnt, 3650 rx_pn_len) > 0) 3651 memcpy(&u.cmd.common.rx_secur_seq_cnt, rx_pn, 3652 rx_pn_len); 3653 } 3654 3655 if (api_ver >= 2) { 3656 u.cmd.transmit_seq_cnt = cpu_to_le64(pn); 3657 size = sizeof(u.cmd); 3658 } else { 3659 size = sizeof(u.cmd_v1); 3660 } 3661 3662 status = ADD_STA_SUCCESS; 3663 if (cmd_flags & CMD_ASYNC) 3664 ret = iwl_mvm_send_cmd_pdu(mvm, ADD_STA_KEY, CMD_ASYNC, size, 3665 &u.cmd); 3666 else 3667 ret = iwl_mvm_send_cmd_pdu_status(mvm, ADD_STA_KEY, size, 3668 &u.cmd, &status); 3669 3670 switch (status) { 3671 case ADD_STA_SUCCESS: 3672 IWL_DEBUG_WEP(mvm, "MODIFY_STA: set dynamic key passed\n"); 3673 break; 3674 default: 3675 ret = -EIO; 3676 IWL_ERR(mvm, "MODIFY_STA: set dynamic key failed\n"); 3677 break; 3678 } 3679 3680 return ret; 3681 } 3682 3683 static int iwl_mvm_send_sta_igtk(struct iwl_mvm *mvm, 3684 struct ieee80211_key_conf *keyconf, 3685 u8 sta_id, bool remove_key) 3686 { 3687 struct iwl_mvm_mgmt_mcast_key_cmd igtk_cmd = {}; 3688 3689 /* verify the key details match the required command's expectations */ 3690 if (WARN_ON((keyconf->flags & IEEE80211_KEY_FLAG_PAIRWISE) || 3691 (keyconf->keyidx != 4 && keyconf->keyidx != 5 && 3692 keyconf->keyidx != 6 && keyconf->keyidx != 7) || 3693 (keyconf->cipher != WLAN_CIPHER_SUITE_AES_CMAC && 3694 keyconf->cipher != WLAN_CIPHER_SUITE_BIP_GMAC_128 && 3695 keyconf->cipher != WLAN_CIPHER_SUITE_BIP_GMAC_256))) 3696 return -EINVAL; 3697 3698 if (WARN_ON(!iwl_mvm_has_new_rx_api(mvm) && 3699 keyconf->cipher != WLAN_CIPHER_SUITE_AES_CMAC)) 3700 return -EINVAL; 3701 3702 igtk_cmd.key_id = cpu_to_le32(keyconf->keyidx); 3703 igtk_cmd.sta_id = cpu_to_le32(sta_id); 3704 3705 if (remove_key) { 3706 /* This is a valid situation for IGTK */ 3707 if (sta_id == IWL_MVM_INVALID_STA) 3708 return 0; 3709 3710 igtk_cmd.ctrl_flags |= cpu_to_le32(STA_KEY_NOT_VALID); 3711 } else { 3712 struct ieee80211_key_seq seq; 3713 const u8 *pn; 3714 3715 switch (keyconf->cipher) { 3716 case WLAN_CIPHER_SUITE_AES_CMAC: 3717 igtk_cmd.ctrl_flags |= cpu_to_le32(STA_KEY_FLG_CCM); 3718 break; 3719 case WLAN_CIPHER_SUITE_BIP_GMAC_128: 3720 case WLAN_CIPHER_SUITE_BIP_GMAC_256: 3721 igtk_cmd.ctrl_flags |= cpu_to_le32(STA_KEY_FLG_GCMP); 3722 break; 3723 default: 3724 return -EINVAL; 3725 } 3726 3727 memcpy(igtk_cmd.igtk, keyconf->key, keyconf->keylen); 3728 if (keyconf->cipher == WLAN_CIPHER_SUITE_BIP_GMAC_256) 3729 igtk_cmd.ctrl_flags |= 3730 cpu_to_le32(STA_KEY_FLG_KEY_32BYTES); 3731 ieee80211_get_key_rx_seq(keyconf, 0, &seq); 3732 pn = seq.aes_cmac.pn; 3733 igtk_cmd.receive_seq_cnt = cpu_to_le64(((u64) pn[5] << 0) | 3734 ((u64) pn[4] << 8) | 3735 ((u64) pn[3] << 16) | 3736 ((u64) pn[2] << 24) | 3737 ((u64) pn[1] << 32) | 3738 ((u64) pn[0] << 40)); 3739 } 3740 3741 IWL_DEBUG_INFO(mvm, "%s %sIGTK (%d) for sta %u\n", 3742 remove_key ? "removing" : "installing", 3743 keyconf->keyidx >= 6 ? "B" : "", 3744 keyconf->keyidx, igtk_cmd.sta_id); 3745 3746 if (!iwl_mvm_has_new_rx_api(mvm)) { 3747 struct iwl_mvm_mgmt_mcast_key_cmd_v1 igtk_cmd_v1 = { 3748 .ctrl_flags = igtk_cmd.ctrl_flags, 3749 .key_id = igtk_cmd.key_id, 3750 .sta_id = igtk_cmd.sta_id, 3751 .receive_seq_cnt = igtk_cmd.receive_seq_cnt 3752 }; 3753 3754 memcpy(igtk_cmd_v1.igtk, igtk_cmd.igtk, 3755 ARRAY_SIZE(igtk_cmd_v1.igtk)); 3756 return iwl_mvm_send_cmd_pdu(mvm, MGMT_MCAST_KEY, 0, 3757 sizeof(igtk_cmd_v1), &igtk_cmd_v1); 3758 } 3759 return iwl_mvm_send_cmd_pdu(mvm, MGMT_MCAST_KEY, 0, 3760 sizeof(igtk_cmd), &igtk_cmd); 3761 } 3762 3763 3764 static inline u8 *iwl_mvm_get_mac_addr(struct iwl_mvm *mvm, 3765 struct ieee80211_vif *vif, 3766 struct ieee80211_sta *sta) 3767 { 3768 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 3769 3770 if (sta) 3771 return sta->addr; 3772 3773 if (vif->type == NL80211_IFTYPE_STATION && 3774 mvmvif->deflink.ap_sta_id != IWL_MVM_INVALID_STA) { 3775 u8 sta_id = mvmvif->deflink.ap_sta_id; 3776 sta = rcu_dereference_protected(mvm->fw_id_to_mac_id[sta_id], 3777 lockdep_is_held(&mvm->mutex)); 3778 if (WARN_ON_ONCE(IS_ERR_OR_NULL(sta))) 3779 return NULL; 3780 3781 return sta->addr; 3782 } 3783 3784 3785 return NULL; 3786 } 3787 3788 static int __iwl_mvm_set_sta_key(struct iwl_mvm *mvm, 3789 struct ieee80211_vif *vif, 3790 struct ieee80211_sta *sta, 3791 struct ieee80211_key_conf *keyconf, 3792 u8 key_offset, 3793 bool mcast) 3794 { 3795 const u8 *addr; 3796 struct ieee80211_key_seq seq; 3797 u16 p1k[5]; 3798 u32 sta_id; 3799 bool mfp = false; 3800 3801 if (sta) { 3802 struct iwl_mvm_sta *mvm_sta = iwl_mvm_sta_from_mac80211(sta); 3803 3804 sta_id = mvm_sta->deflink.sta_id; 3805 mfp = sta->mfp; 3806 } else if (vif->type == NL80211_IFTYPE_AP && 3807 !(keyconf->flags & IEEE80211_KEY_FLAG_PAIRWISE)) { 3808 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 3809 3810 sta_id = mvmvif->deflink.mcast_sta.sta_id; 3811 } else { 3812 IWL_ERR(mvm, "Failed to find station id\n"); 3813 return -EINVAL; 3814 } 3815 3816 if (keyconf->cipher == WLAN_CIPHER_SUITE_TKIP) { 3817 addr = iwl_mvm_get_mac_addr(mvm, vif, sta); 3818 if (!addr) { 3819 IWL_ERR(mvm, "Failed to find mac address\n"); 3820 return -EINVAL; 3821 } 3822 3823 /* get phase 1 key from mac80211 */ 3824 ieee80211_get_key_rx_seq(keyconf, 0, &seq); 3825 ieee80211_get_tkip_rx_p1k(keyconf, addr, seq.tkip.iv32, p1k); 3826 3827 return iwl_mvm_send_sta_key(mvm, sta_id, keyconf, mcast, 3828 seq.tkip.iv32, p1k, 0, key_offset, 3829 mfp); 3830 } 3831 3832 return iwl_mvm_send_sta_key(mvm, sta_id, keyconf, mcast, 3833 0, NULL, 0, key_offset, mfp); 3834 } 3835 3836 int iwl_mvm_set_sta_key(struct iwl_mvm *mvm, 3837 struct ieee80211_vif *vif, 3838 struct ieee80211_sta *sta, 3839 struct ieee80211_key_conf *keyconf, 3840 u8 key_offset) 3841 { 3842 bool mcast = !(keyconf->flags & IEEE80211_KEY_FLAG_PAIRWISE); 3843 struct iwl_mvm_sta *mvm_sta; 3844 u8 sta_id = IWL_MVM_INVALID_STA; 3845 int ret; 3846 static const u8 __maybe_unused zero_addr[ETH_ALEN] = {0}; 3847 3848 lockdep_assert_held(&mvm->mutex); 3849 3850 if (vif->type != NL80211_IFTYPE_AP || 3851 keyconf->flags & IEEE80211_KEY_FLAG_PAIRWISE) { 3852 /* Get the station id from the mvm local station table */ 3853 mvm_sta = iwl_mvm_get_key_sta(mvm, vif, sta); 3854 if (!mvm_sta) { 3855 IWL_ERR(mvm, "Failed to find station\n"); 3856 return -EINVAL; 3857 } 3858 sta_id = mvm_sta->deflink.sta_id; 3859 3860 /* 3861 * It is possible that the 'sta' parameter is NULL, and thus 3862 * there is a need to retrieve the sta from the local station 3863 * table. 3864 */ 3865 if (!sta) { 3866 sta = rcu_dereference_protected( 3867 mvm->fw_id_to_mac_id[sta_id], 3868 lockdep_is_held(&mvm->mutex)); 3869 if (IS_ERR_OR_NULL(sta)) { 3870 IWL_ERR(mvm, "Invalid station id\n"); 3871 return -EINVAL; 3872 } 3873 } 3874 3875 if (WARN_ON_ONCE(iwl_mvm_sta_from_mac80211(sta)->vif != vif)) 3876 return -EINVAL; 3877 } else { 3878 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 3879 3880 sta_id = mvmvif->deflink.mcast_sta.sta_id; 3881 } 3882 3883 if (keyconf->cipher == WLAN_CIPHER_SUITE_AES_CMAC || 3884 keyconf->cipher == WLAN_CIPHER_SUITE_BIP_GMAC_128 || 3885 keyconf->cipher == WLAN_CIPHER_SUITE_BIP_GMAC_256) { 3886 ret = iwl_mvm_send_sta_igtk(mvm, keyconf, sta_id, false); 3887 goto end; 3888 } 3889 3890 /* If the key_offset is not pre-assigned, we need to find a 3891 * new offset to use. In normal cases, the offset is not 3892 * pre-assigned, but during HW_RESTART we want to reuse the 3893 * same indices, so we pass them when this function is called. 3894 * 3895 * In D3 entry, we need to hardcoded the indices (because the 3896 * firmware hardcodes the PTK offset to 0). In this case, we 3897 * need to make sure we don't overwrite the hw_key_idx in the 3898 * keyconf structure, because otherwise we cannot configure 3899 * the original ones back when resuming. 3900 */ 3901 if (key_offset == STA_KEY_IDX_INVALID) { 3902 key_offset = iwl_mvm_set_fw_key_idx(mvm); 3903 if (key_offset == STA_KEY_IDX_INVALID) 3904 return -ENOSPC; 3905 keyconf->hw_key_idx = key_offset; 3906 } 3907 3908 ret = __iwl_mvm_set_sta_key(mvm, vif, sta, keyconf, key_offset, mcast); 3909 if (ret) 3910 goto end; 3911 3912 /* 3913 * For WEP, the same key is used for multicast and unicast. Upload it 3914 * again, using the same key offset, and now pointing the other one 3915 * to the same key slot (offset). 3916 * If this fails, remove the original as well. 3917 */ 3918 if ((keyconf->cipher == WLAN_CIPHER_SUITE_WEP40 || 3919 keyconf->cipher == WLAN_CIPHER_SUITE_WEP104) && 3920 sta) { 3921 ret = __iwl_mvm_set_sta_key(mvm, vif, sta, keyconf, 3922 key_offset, !mcast); 3923 if (ret) { 3924 __iwl_mvm_remove_sta_key(mvm, sta_id, keyconf, mcast); 3925 goto end; 3926 } 3927 } 3928 3929 __set_bit(key_offset, mvm->fw_key_table); 3930 3931 end: 3932 IWL_DEBUG_WEP(mvm, "key: cipher=%x len=%d idx=%d sta=%pM ret=%d\n", 3933 keyconf->cipher, keyconf->keylen, keyconf->keyidx, 3934 sta ? sta->addr : zero_addr, ret); 3935 return ret; 3936 } 3937 3938 int iwl_mvm_remove_sta_key(struct iwl_mvm *mvm, 3939 struct ieee80211_vif *vif, 3940 struct ieee80211_sta *sta, 3941 struct ieee80211_key_conf *keyconf) 3942 { 3943 bool mcast = !(keyconf->flags & IEEE80211_KEY_FLAG_PAIRWISE); 3944 struct iwl_mvm_sta *mvm_sta; 3945 u8 sta_id = IWL_MVM_INVALID_STA; 3946 int ret, i; 3947 3948 lockdep_assert_held(&mvm->mutex); 3949 3950 /* Get the station from the mvm local station table */ 3951 mvm_sta = iwl_mvm_get_key_sta(mvm, vif, sta); 3952 if (mvm_sta) 3953 sta_id = mvm_sta->deflink.sta_id; 3954 else if (!sta && vif->type == NL80211_IFTYPE_AP && mcast) 3955 sta_id = iwl_mvm_vif_from_mac80211(vif)->deflink.mcast_sta.sta_id; 3956 3957 3958 IWL_DEBUG_WEP(mvm, "mvm remove dynamic key: idx=%d sta=%d\n", 3959 keyconf->keyidx, sta_id); 3960 3961 if (keyconf->cipher == WLAN_CIPHER_SUITE_AES_CMAC || 3962 keyconf->cipher == WLAN_CIPHER_SUITE_BIP_GMAC_128 || 3963 keyconf->cipher == WLAN_CIPHER_SUITE_BIP_GMAC_256) 3964 return iwl_mvm_send_sta_igtk(mvm, keyconf, sta_id, true); 3965 3966 if (!__test_and_clear_bit(keyconf->hw_key_idx, mvm->fw_key_table)) { 3967 IWL_ERR(mvm, "offset %d not used in fw key table.\n", 3968 keyconf->hw_key_idx); 3969 return -ENOENT; 3970 } 3971 3972 /* track which key was deleted last */ 3973 for (i = 0; i < STA_KEY_MAX_NUM; i++) { 3974 if (mvm->fw_key_deleted[i] < U8_MAX) 3975 mvm->fw_key_deleted[i]++; 3976 } 3977 mvm->fw_key_deleted[keyconf->hw_key_idx] = 0; 3978 3979 if (sta && !mvm_sta) { 3980 IWL_DEBUG_WEP(mvm, "station non-existent, early return.\n"); 3981 return 0; 3982 } 3983 3984 ret = __iwl_mvm_remove_sta_key(mvm, sta_id, keyconf, mcast); 3985 if (ret) 3986 return ret; 3987 3988 /* delete WEP key twice to get rid of (now useless) offset */ 3989 if (keyconf->cipher == WLAN_CIPHER_SUITE_WEP40 || 3990 keyconf->cipher == WLAN_CIPHER_SUITE_WEP104) 3991 ret = __iwl_mvm_remove_sta_key(mvm, sta_id, keyconf, !mcast); 3992 3993 return ret; 3994 } 3995 3996 void iwl_mvm_update_tkip_key(struct iwl_mvm *mvm, 3997 struct ieee80211_vif *vif, 3998 struct ieee80211_key_conf *keyconf, 3999 struct ieee80211_sta *sta, u32 iv32, 4000 u16 *phase1key) 4001 { 4002 struct iwl_mvm_sta *mvm_sta; 4003 bool mcast = !(keyconf->flags & IEEE80211_KEY_FLAG_PAIRWISE); 4004 bool mfp = sta ? sta->mfp : false; 4005 4006 rcu_read_lock(); 4007 4008 mvm_sta = iwl_mvm_get_key_sta(mvm, vif, sta); 4009 if (WARN_ON_ONCE(!mvm_sta)) 4010 goto unlock; 4011 iwl_mvm_send_sta_key(mvm, mvm_sta->deflink.sta_id, keyconf, mcast, 4012 iv32, phase1key, CMD_ASYNC, keyconf->hw_key_idx, 4013 mfp); 4014 4015 unlock: 4016 rcu_read_unlock(); 4017 } 4018 4019 void iwl_mvm_sta_modify_ps_wake(struct iwl_mvm *mvm, 4020 struct ieee80211_sta *sta) 4021 { 4022 struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta); 4023 struct iwl_mvm_add_sta_cmd cmd = { 4024 .add_modify = STA_MODE_MODIFY, 4025 .sta_id = mvmsta->deflink.sta_id, 4026 .station_flags_msk = cpu_to_le32(STA_FLG_PS), 4027 .mac_id_n_color = cpu_to_le32(mvmsta->mac_id_n_color), 4028 }; 4029 int ret; 4030 4031 ret = iwl_mvm_send_cmd_pdu(mvm, ADD_STA, CMD_ASYNC, 4032 iwl_mvm_add_sta_cmd_size(mvm), &cmd); 4033 if (ret) 4034 IWL_ERR(mvm, "Failed to send ADD_STA command (%d)\n", ret); 4035 } 4036 4037 void iwl_mvm_sta_modify_sleep_tx_count(struct iwl_mvm *mvm, 4038 struct ieee80211_sta *sta, 4039 enum ieee80211_frame_release_type reason, 4040 u16 cnt, u16 tids, bool more_data, 4041 bool single_sta_queue) 4042 { 4043 struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta); 4044 struct iwl_mvm_add_sta_cmd cmd = { 4045 .add_modify = STA_MODE_MODIFY, 4046 .sta_id = mvmsta->deflink.sta_id, 4047 .modify_mask = STA_MODIFY_SLEEPING_STA_TX_COUNT, 4048 .sleep_tx_count = cpu_to_le16(cnt), 4049 .mac_id_n_color = cpu_to_le32(mvmsta->mac_id_n_color), 4050 }; 4051 int tid, ret; 4052 unsigned long _tids = tids; 4053 4054 /* convert TIDs to ACs - we don't support TSPEC so that's OK 4055 * Note that this field is reserved and unused by firmware not 4056 * supporting GO uAPSD, so it's safe to always do this. 4057 */ 4058 for_each_set_bit(tid, &_tids, IWL_MAX_TID_COUNT) 4059 cmd.awake_acs |= BIT(tid_to_ucode_ac[tid]); 4060 4061 /* If we're releasing frames from aggregation or dqa queues then check 4062 * if all the queues that we're releasing frames from, combined, have: 4063 * - more frames than the service period, in which case more_data 4064 * needs to be set 4065 * - fewer than 'cnt' frames, in which case we need to adjust the 4066 * firmware command (but do that unconditionally) 4067 */ 4068 if (single_sta_queue) { 4069 int remaining = cnt; 4070 int sleep_tx_count; 4071 4072 spin_lock_bh(&mvmsta->lock); 4073 for_each_set_bit(tid, &_tids, IWL_MAX_TID_COUNT) { 4074 struct iwl_mvm_tid_data *tid_data; 4075 u16 n_queued; 4076 4077 tid_data = &mvmsta->tid_data[tid]; 4078 4079 n_queued = iwl_mvm_tid_queued(mvm, tid_data); 4080 if (n_queued > remaining) { 4081 more_data = true; 4082 remaining = 0; 4083 break; 4084 } 4085 remaining -= n_queued; 4086 } 4087 sleep_tx_count = cnt - remaining; 4088 if (reason == IEEE80211_FRAME_RELEASE_UAPSD) 4089 mvmsta->sleep_tx_count = sleep_tx_count; 4090 spin_unlock_bh(&mvmsta->lock); 4091 4092 cmd.sleep_tx_count = cpu_to_le16(sleep_tx_count); 4093 if (WARN_ON(cnt - remaining == 0)) { 4094 ieee80211_sta_eosp(sta); 4095 return; 4096 } 4097 } 4098 4099 /* Note: this is ignored by firmware not supporting GO uAPSD */ 4100 if (more_data) 4101 cmd.sleep_state_flags |= STA_SLEEP_STATE_MOREDATA; 4102 4103 if (reason == IEEE80211_FRAME_RELEASE_PSPOLL) { 4104 mvmsta->next_status_eosp = true; 4105 cmd.sleep_state_flags |= STA_SLEEP_STATE_PS_POLL; 4106 } else { 4107 cmd.sleep_state_flags |= STA_SLEEP_STATE_UAPSD; 4108 } 4109 4110 /* block the Tx queues until the FW updated the sleep Tx count */ 4111 iwl_trans_block_txq_ptrs(mvm->trans, true); 4112 4113 ret = iwl_mvm_send_cmd_pdu(mvm, ADD_STA, 4114 CMD_ASYNC | CMD_WANT_ASYNC_CALLBACK, 4115 iwl_mvm_add_sta_cmd_size(mvm), &cmd); 4116 if (ret) 4117 IWL_ERR(mvm, "Failed to send ADD_STA command (%d)\n", ret); 4118 } 4119 4120 void iwl_mvm_rx_eosp_notif(struct iwl_mvm *mvm, 4121 struct iwl_rx_cmd_buffer *rxb) 4122 { 4123 struct iwl_rx_packet *pkt = rxb_addr(rxb); 4124 struct iwl_mvm_eosp_notification *notif = (void *)pkt->data; 4125 struct ieee80211_sta *sta; 4126 u32 sta_id = le32_to_cpu(notif->sta_id); 4127 4128 if (WARN_ON_ONCE(sta_id >= mvm->fw->ucode_capa.num_stations)) 4129 return; 4130 4131 rcu_read_lock(); 4132 sta = rcu_dereference(mvm->fw_id_to_mac_id[sta_id]); 4133 if (!IS_ERR_OR_NULL(sta)) 4134 ieee80211_sta_eosp(sta); 4135 rcu_read_unlock(); 4136 } 4137 4138 void iwl_mvm_sta_modify_disable_tx(struct iwl_mvm *mvm, 4139 struct iwl_mvm_sta *mvmsta, 4140 bool disable) 4141 { 4142 struct iwl_mvm_add_sta_cmd cmd = { 4143 .add_modify = STA_MODE_MODIFY, 4144 .sta_id = mvmsta->deflink.sta_id, 4145 .station_flags = disable ? cpu_to_le32(STA_FLG_DISABLE_TX) : 0, 4146 .station_flags_msk = cpu_to_le32(STA_FLG_DISABLE_TX), 4147 .mac_id_n_color = cpu_to_le32(mvmsta->mac_id_n_color), 4148 }; 4149 int ret; 4150 4151 if (mvm->mld_api_is_used) { 4152 iwl_mvm_mld_sta_modify_disable_tx(mvm, mvmsta, disable); 4153 return; 4154 } 4155 4156 ret = iwl_mvm_send_cmd_pdu(mvm, ADD_STA, CMD_ASYNC, 4157 iwl_mvm_add_sta_cmd_size(mvm), &cmd); 4158 if (ret) 4159 IWL_ERR(mvm, "Failed to send ADD_STA command (%d)\n", ret); 4160 } 4161 4162 void iwl_mvm_sta_modify_disable_tx_ap(struct iwl_mvm *mvm, 4163 struct ieee80211_sta *sta, 4164 bool disable) 4165 { 4166 struct iwl_mvm_sta *mvm_sta = iwl_mvm_sta_from_mac80211(sta); 4167 4168 if (mvm->mld_api_is_used) { 4169 iwl_mvm_mld_sta_modify_disable_tx_ap(mvm, sta, disable); 4170 return; 4171 } 4172 4173 spin_lock_bh(&mvm_sta->lock); 4174 4175 if (mvm_sta->disable_tx == disable) { 4176 spin_unlock_bh(&mvm_sta->lock); 4177 return; 4178 } 4179 4180 mvm_sta->disable_tx = disable; 4181 4182 /* 4183 * If sta PS state is handled by mac80211, tell it to start/stop 4184 * queuing tx for this station. 4185 */ 4186 if (!ieee80211_hw_check(mvm->hw, AP_LINK_PS)) 4187 ieee80211_sta_block_awake(mvm->hw, sta, disable); 4188 4189 iwl_mvm_sta_modify_disable_tx(mvm, mvm_sta, disable); 4190 4191 spin_unlock_bh(&mvm_sta->lock); 4192 } 4193 4194 static void iwl_mvm_int_sta_modify_disable_tx(struct iwl_mvm *mvm, 4195 struct iwl_mvm_vif *mvmvif, 4196 struct iwl_mvm_int_sta *sta, 4197 bool disable) 4198 { 4199 u32 id = FW_CMD_ID_AND_COLOR(mvmvif->id, mvmvif->color); 4200 struct iwl_mvm_add_sta_cmd cmd = { 4201 .add_modify = STA_MODE_MODIFY, 4202 .sta_id = sta->sta_id, 4203 .station_flags = disable ? cpu_to_le32(STA_FLG_DISABLE_TX) : 0, 4204 .station_flags_msk = cpu_to_le32(STA_FLG_DISABLE_TX), 4205 .mac_id_n_color = cpu_to_le32(id), 4206 }; 4207 int ret; 4208 4209 ret = iwl_mvm_send_cmd_pdu(mvm, ADD_STA, CMD_ASYNC, 4210 iwl_mvm_add_sta_cmd_size(mvm), &cmd); 4211 if (ret) 4212 IWL_ERR(mvm, "Failed to send ADD_STA command (%d)\n", ret); 4213 } 4214 4215 void iwl_mvm_modify_all_sta_disable_tx(struct iwl_mvm *mvm, 4216 struct iwl_mvm_vif *mvmvif, 4217 bool disable) 4218 { 4219 struct ieee80211_sta *sta; 4220 struct iwl_mvm_sta *mvm_sta; 4221 int i; 4222 4223 if (mvm->mld_api_is_used) { 4224 iwl_mvm_mld_modify_all_sta_disable_tx(mvm, mvmvif, disable); 4225 return; 4226 } 4227 4228 rcu_read_lock(); 4229 4230 /* Block/unblock all the stations of the given mvmvif */ 4231 for (i = 0; i < mvm->fw->ucode_capa.num_stations; i++) { 4232 sta = rcu_dereference(mvm->fw_id_to_mac_id[i]); 4233 if (IS_ERR_OR_NULL(sta)) 4234 continue; 4235 4236 mvm_sta = iwl_mvm_sta_from_mac80211(sta); 4237 if (mvm_sta->mac_id_n_color != 4238 FW_CMD_ID_AND_COLOR(mvmvif->id, mvmvif->color)) 4239 continue; 4240 4241 iwl_mvm_sta_modify_disable_tx_ap(mvm, sta, disable); 4242 } 4243 4244 rcu_read_unlock(); 4245 4246 if (!fw_has_api(&mvm->fw->ucode_capa, IWL_UCODE_TLV_API_STA_TYPE)) 4247 return; 4248 4249 /* Need to block/unblock also multicast station */ 4250 if (mvmvif->deflink.mcast_sta.sta_id != IWL_MVM_INVALID_STA) 4251 iwl_mvm_int_sta_modify_disable_tx(mvm, mvmvif, 4252 &mvmvif->deflink.mcast_sta, 4253 disable); 4254 4255 /* 4256 * Only unblock the broadcast station (FW blocks it for immediate 4257 * quiet, not the driver) 4258 */ 4259 if (!disable && mvmvif->deflink.bcast_sta.sta_id != IWL_MVM_INVALID_STA) 4260 iwl_mvm_int_sta_modify_disable_tx(mvm, mvmvif, 4261 &mvmvif->deflink.bcast_sta, 4262 disable); 4263 } 4264 4265 void iwl_mvm_csa_client_absent(struct iwl_mvm *mvm, struct ieee80211_vif *vif) 4266 { 4267 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 4268 struct iwl_mvm_sta *mvmsta; 4269 4270 rcu_read_lock(); 4271 4272 mvmsta = iwl_mvm_sta_from_staid_rcu(mvm, mvmvif->deflink.ap_sta_id); 4273 4274 if (mvmsta) 4275 iwl_mvm_sta_modify_disable_tx(mvm, mvmsta, true); 4276 4277 rcu_read_unlock(); 4278 } 4279 4280 u16 iwl_mvm_tid_queued(struct iwl_mvm *mvm, struct iwl_mvm_tid_data *tid_data) 4281 { 4282 u16 sn = IEEE80211_SEQ_TO_SN(tid_data->seq_number); 4283 4284 /* 4285 * In 22000 HW, the next_reclaimed index is only 8 bit, so we'll need 4286 * to align the wrap around of ssn so we compare relevant values. 4287 */ 4288 if (mvm->trans->trans_cfg->gen2) 4289 sn &= 0xff; 4290 4291 return ieee80211_sn_sub(sn, tid_data->next_reclaimed); 4292 } 4293 4294 int iwl_mvm_add_pasn_sta(struct iwl_mvm *mvm, struct ieee80211_vif *vif, 4295 struct iwl_mvm_int_sta *sta, u8 *addr, u32 cipher, 4296 u8 *key, u32 key_len) 4297 { 4298 int ret; 4299 u16 queue; 4300 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 4301 struct ieee80211_key_conf *keyconf; 4302 unsigned int wdg_timeout = 4303 iwl_mvm_get_wd_timeout(mvm, vif, false, false); 4304 bool mld = iwl_mvm_has_mld_api(mvm->fw); 4305 u32 type = mld ? STATION_TYPE_PEER : IWL_STA_LINK; 4306 4307 ret = iwl_mvm_allocate_int_sta(mvm, sta, 0, 4308 NL80211_IFTYPE_UNSPECIFIED, type); 4309 if (ret) 4310 return ret; 4311 4312 if (mld) 4313 ret = iwl_mvm_mld_add_int_sta_with_queue(mvm, sta, addr, 4314 mvmvif->deflink.fw_link_id, 4315 &queue, 4316 IWL_MAX_TID_COUNT, 4317 &wdg_timeout); 4318 else 4319 ret = iwl_mvm_add_int_sta_with_queue(mvm, mvmvif->id, 4320 mvmvif->color, addr, sta, 4321 &queue, 4322 IWL_MVM_TX_FIFO_BE); 4323 if (ret) 4324 goto out; 4325 4326 keyconf = kzalloc(sizeof(*keyconf) + key_len, GFP_KERNEL); 4327 if (!keyconf) { 4328 ret = -ENOBUFS; 4329 goto out; 4330 } 4331 4332 keyconf->cipher = cipher; 4333 memcpy(keyconf->key, key, key_len); 4334 keyconf->keylen = key_len; 4335 keyconf->flags = IEEE80211_KEY_FLAG_PAIRWISE; 4336 4337 if (mld) { 4338 /* The MFP flag is set according to the station mfp field. Since 4339 * we don't have a station, set it manually. 4340 */ 4341 u32 key_flags = 4342 iwl_mvm_get_sec_flags(mvm, vif, NULL, keyconf) | 4343 IWL_SEC_KEY_FLAG_MFP; 4344 u32 sta_mask = BIT(sta->sta_id); 4345 4346 ret = iwl_mvm_mld_send_key(mvm, sta_mask, key_flags, keyconf); 4347 } else { 4348 ret = iwl_mvm_send_sta_key(mvm, sta->sta_id, keyconf, false, 4349 0, NULL, 0, 0, true); 4350 } 4351 4352 kfree(keyconf); 4353 return 0; 4354 out: 4355 iwl_mvm_dealloc_int_sta(mvm, sta); 4356 return ret; 4357 } 4358 4359 void iwl_mvm_cancel_channel_switch(struct iwl_mvm *mvm, 4360 struct ieee80211_vif *vif, 4361 u32 id) 4362 { 4363 struct iwl_cancel_channel_switch_cmd cancel_channel_switch_cmd = { 4364 .id = cpu_to_le32(id), 4365 }; 4366 int ret; 4367 4368 ret = iwl_mvm_send_cmd_pdu(mvm, 4369 WIDE_ID(MAC_CONF_GROUP, CANCEL_CHANNEL_SWITCH_CMD), 4370 CMD_ASYNC, 4371 sizeof(cancel_channel_switch_cmd), 4372 &cancel_channel_switch_cmd); 4373 if (ret) 4374 IWL_ERR(mvm, "Failed to cancel the channel switch\n"); 4375 } 4376