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