1e705c121SKalle Valo /****************************************************************************** 2e705c121SKalle Valo * 3e705c121SKalle Valo * This file is provided under a dual BSD/GPLv2 license. When using or 4e705c121SKalle Valo * redistributing this file, you may do so under either license. 5e705c121SKalle Valo * 6e705c121SKalle Valo * GPL LICENSE SUMMARY 7e705c121SKalle Valo * 8e705c121SKalle Valo * Copyright(c) 2012 - 2015 Intel Corporation. All rights reserved. 9e705c121SKalle Valo * Copyright(c) 2013 - 2015 Intel Mobile Communications GmbH 10854c5705SSara Sharon * Copyright(c) 2016 Intel Deutschland GmbH 11e705c121SKalle Valo * 12e705c121SKalle Valo * This program is free software; you can redistribute it and/or modify 13e705c121SKalle Valo * it under the terms of version 2 of the GNU General Public License as 14e705c121SKalle Valo * published by the Free Software Foundation. 15e705c121SKalle Valo * 16e705c121SKalle Valo * This program is distributed in the hope that it will be useful, but 17e705c121SKalle Valo * WITHOUT ANY WARRANTY; without even the implied warranty of 18e705c121SKalle Valo * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 19e705c121SKalle Valo * General Public License for more details. 20e705c121SKalle Valo * 21e705c121SKalle Valo * You should have received a copy of the GNU General Public License 22e705c121SKalle Valo * along with this program; if not, write to the Free Software 23e705c121SKalle Valo * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110, 24e705c121SKalle Valo * USA 25e705c121SKalle Valo * 26e705c121SKalle Valo * The full GNU General Public License is included in this distribution 27e705c121SKalle Valo * in the file called COPYING. 28e705c121SKalle Valo * 29e705c121SKalle Valo * Contact Information: 30cb2f8277SEmmanuel Grumbach * Intel Linux Wireless <linuxwifi@intel.com> 31e705c121SKalle Valo * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497 32e705c121SKalle Valo * 33e705c121SKalle Valo * BSD LICENSE 34e705c121SKalle Valo * 35e705c121SKalle Valo * Copyright(c) 2012 - 2015 Intel Corporation. All rights reserved. 36e705c121SKalle Valo * Copyright(c) 2013 - 2015 Intel Mobile Communications GmbH 37854c5705SSara Sharon * Copyright(c) 2016 Intel Deutschland GmbH 38e705c121SKalle Valo * All rights reserved. 39e705c121SKalle Valo * 40e705c121SKalle Valo * Redistribution and use in source and binary forms, with or without 41e705c121SKalle Valo * modification, are permitted provided that the following conditions 42e705c121SKalle Valo * are met: 43e705c121SKalle Valo * 44e705c121SKalle Valo * * Redistributions of source code must retain the above copyright 45e705c121SKalle Valo * notice, this list of conditions and the following disclaimer. 46e705c121SKalle Valo * * Redistributions in binary form must reproduce the above copyright 47e705c121SKalle Valo * notice, this list of conditions and the following disclaimer in 48e705c121SKalle Valo * the documentation and/or other materials provided with the 49e705c121SKalle Valo * distribution. 50e705c121SKalle Valo * * Neither the name Intel Corporation nor the names of its 51e705c121SKalle Valo * contributors may be used to endorse or promote products derived 52e705c121SKalle Valo * from this software without specific prior written permission. 53e705c121SKalle Valo * 54e705c121SKalle Valo * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 55e705c121SKalle Valo * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 56e705c121SKalle Valo * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 57e705c121SKalle Valo * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 58e705c121SKalle Valo * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 59e705c121SKalle Valo * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 60e705c121SKalle Valo * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 61e705c121SKalle Valo * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 62e705c121SKalle Valo * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 63e705c121SKalle Valo * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 64e705c121SKalle Valo * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 65e705c121SKalle Valo * 66e705c121SKalle Valo *****************************************************************************/ 67e705c121SKalle Valo #include <net/mac80211.h> 68e705c121SKalle Valo 69e705c121SKalle Valo #include "mvm.h" 70e705c121SKalle Valo #include "sta.h" 71e705c121SKalle Valo #include "rs.h" 72e705c121SKalle Valo 73854c5705SSara Sharon /* 74854c5705SSara Sharon * New version of ADD_STA_sta command added new fields at the end of the 75854c5705SSara Sharon * structure, so sending the size of the relevant API's structure is enough to 76854c5705SSara Sharon * support both API versions. 77854c5705SSara Sharon */ 78854c5705SSara Sharon static inline int iwl_mvm_add_sta_cmd_size(struct iwl_mvm *mvm) 79854c5705SSara Sharon { 80854c5705SSara Sharon return iwl_mvm_has_new_rx_api(mvm) ? 81854c5705SSara Sharon sizeof(struct iwl_mvm_add_sta_cmd) : 82854c5705SSara Sharon sizeof(struct iwl_mvm_add_sta_cmd_v7); 83854c5705SSara Sharon } 84854c5705SSara Sharon 85e705c121SKalle Valo static int iwl_mvm_find_free_sta_id(struct iwl_mvm *mvm, 86e705c121SKalle Valo enum nl80211_iftype iftype) 87e705c121SKalle Valo { 88e705c121SKalle Valo int sta_id; 89e705c121SKalle Valo u32 reserved_ids = 0; 90e705c121SKalle Valo 91e705c121SKalle Valo BUILD_BUG_ON(IWL_MVM_STATION_COUNT > 32); 92e705c121SKalle Valo WARN_ON_ONCE(test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status)); 93e705c121SKalle Valo 94e705c121SKalle Valo lockdep_assert_held(&mvm->mutex); 95e705c121SKalle Valo 96e705c121SKalle Valo /* d0i3/d3 assumes the AP's sta_id (of sta vif) is 0. reserve it. */ 97e705c121SKalle Valo if (iftype != NL80211_IFTYPE_STATION) 98e705c121SKalle Valo reserved_ids = BIT(0); 99e705c121SKalle Valo 100e705c121SKalle Valo /* Don't take rcu_read_lock() since we are protected by mvm->mutex */ 101e705c121SKalle Valo for (sta_id = 0; sta_id < IWL_MVM_STATION_COUNT; sta_id++) { 102e705c121SKalle Valo if (BIT(sta_id) & reserved_ids) 103e705c121SKalle Valo continue; 104e705c121SKalle Valo 105e705c121SKalle Valo if (!rcu_dereference_protected(mvm->fw_id_to_mac_id[sta_id], 106e705c121SKalle Valo lockdep_is_held(&mvm->mutex))) 107e705c121SKalle Valo return sta_id; 108e705c121SKalle Valo } 109e705c121SKalle Valo return IWL_MVM_STATION_COUNT; 110e705c121SKalle Valo } 111e705c121SKalle Valo 112e705c121SKalle Valo /* send station add/update command to firmware */ 113e705c121SKalle Valo int iwl_mvm_sta_send_to_fw(struct iwl_mvm *mvm, struct ieee80211_sta *sta, 11424afba76SLiad Kaufman bool update, unsigned int flags) 115e705c121SKalle Valo { 116e705c121SKalle Valo struct iwl_mvm_sta *mvm_sta = iwl_mvm_sta_from_mac80211(sta); 117e705c121SKalle Valo struct iwl_mvm_add_sta_cmd add_sta_cmd = { 118e705c121SKalle Valo .sta_id = mvm_sta->sta_id, 119e705c121SKalle Valo .mac_id_n_color = cpu_to_le32(mvm_sta->mac_id_n_color), 120e705c121SKalle Valo .add_modify = update ? 1 : 0, 121e705c121SKalle Valo .station_flags_msk = cpu_to_le32(STA_FLG_FAT_EN_MSK | 122e705c121SKalle Valo STA_FLG_MIMO_EN_MSK), 123cf0cda19SLiad Kaufman .tid_disable_tx = cpu_to_le16(mvm_sta->tid_disable_agg), 124e705c121SKalle Valo }; 125e705c121SKalle Valo int ret; 126e705c121SKalle Valo u32 status; 127e705c121SKalle Valo u32 agg_size = 0, mpdu_dens = 0; 128e705c121SKalle Valo 12924afba76SLiad Kaufman if (!update || (flags & STA_MODIFY_QUEUES)) { 130e705c121SKalle Valo add_sta_cmd.tfd_queue_msk = cpu_to_le32(mvm_sta->tfd_queue_msk); 131e705c121SKalle Valo memcpy(&add_sta_cmd.addr, sta->addr, ETH_ALEN); 13224afba76SLiad Kaufman 13324afba76SLiad Kaufman if (flags & STA_MODIFY_QUEUES) 13424afba76SLiad Kaufman add_sta_cmd.modify_mask |= STA_MODIFY_QUEUES; 135e705c121SKalle Valo } 136e705c121SKalle Valo 137e705c121SKalle Valo switch (sta->bandwidth) { 138e705c121SKalle Valo case IEEE80211_STA_RX_BW_160: 139e705c121SKalle Valo add_sta_cmd.station_flags |= cpu_to_le32(STA_FLG_FAT_EN_160MHZ); 140e705c121SKalle Valo /* fall through */ 141e705c121SKalle Valo case IEEE80211_STA_RX_BW_80: 142e705c121SKalle Valo add_sta_cmd.station_flags |= cpu_to_le32(STA_FLG_FAT_EN_80MHZ); 143e705c121SKalle Valo /* fall through */ 144e705c121SKalle Valo case IEEE80211_STA_RX_BW_40: 145e705c121SKalle Valo add_sta_cmd.station_flags |= cpu_to_le32(STA_FLG_FAT_EN_40MHZ); 146e705c121SKalle Valo /* fall through */ 147e705c121SKalle Valo case IEEE80211_STA_RX_BW_20: 148e705c121SKalle Valo if (sta->ht_cap.ht_supported) 149e705c121SKalle Valo add_sta_cmd.station_flags |= 150e705c121SKalle Valo cpu_to_le32(STA_FLG_FAT_EN_20MHZ); 151e705c121SKalle Valo break; 152e705c121SKalle Valo } 153e705c121SKalle Valo 154e705c121SKalle Valo switch (sta->rx_nss) { 155e705c121SKalle Valo case 1: 156e705c121SKalle Valo add_sta_cmd.station_flags |= cpu_to_le32(STA_FLG_MIMO_EN_SISO); 157e705c121SKalle Valo break; 158e705c121SKalle Valo case 2: 159e705c121SKalle Valo add_sta_cmd.station_flags |= cpu_to_le32(STA_FLG_MIMO_EN_MIMO2); 160e705c121SKalle Valo break; 161e705c121SKalle Valo case 3 ... 8: 162e705c121SKalle Valo add_sta_cmd.station_flags |= cpu_to_le32(STA_FLG_MIMO_EN_MIMO3); 163e705c121SKalle Valo break; 164e705c121SKalle Valo } 165e705c121SKalle Valo 166e705c121SKalle Valo switch (sta->smps_mode) { 167e705c121SKalle Valo case IEEE80211_SMPS_AUTOMATIC: 168e705c121SKalle Valo case IEEE80211_SMPS_NUM_MODES: 169e705c121SKalle Valo WARN_ON(1); 170e705c121SKalle Valo break; 171e705c121SKalle Valo case IEEE80211_SMPS_STATIC: 172e705c121SKalle Valo /* override NSS */ 173e705c121SKalle Valo add_sta_cmd.station_flags &= ~cpu_to_le32(STA_FLG_MIMO_EN_MSK); 174e705c121SKalle Valo add_sta_cmd.station_flags |= cpu_to_le32(STA_FLG_MIMO_EN_SISO); 175e705c121SKalle Valo break; 176e705c121SKalle Valo case IEEE80211_SMPS_DYNAMIC: 177e705c121SKalle Valo add_sta_cmd.station_flags |= cpu_to_le32(STA_FLG_RTS_MIMO_PROT); 178e705c121SKalle Valo break; 179e705c121SKalle Valo case IEEE80211_SMPS_OFF: 180e705c121SKalle Valo /* nothing */ 181e705c121SKalle Valo break; 182e705c121SKalle Valo } 183e705c121SKalle Valo 184e705c121SKalle Valo if (sta->ht_cap.ht_supported) { 185e705c121SKalle Valo add_sta_cmd.station_flags_msk |= 186e705c121SKalle Valo cpu_to_le32(STA_FLG_MAX_AGG_SIZE_MSK | 187e705c121SKalle Valo STA_FLG_AGG_MPDU_DENS_MSK); 188e705c121SKalle Valo 189e705c121SKalle Valo mpdu_dens = sta->ht_cap.ampdu_density; 190e705c121SKalle Valo } 191e705c121SKalle Valo 192e705c121SKalle Valo if (sta->vht_cap.vht_supported) { 193e705c121SKalle Valo agg_size = sta->vht_cap.cap & 194e705c121SKalle Valo IEEE80211_VHT_CAP_MAX_A_MPDU_LENGTH_EXPONENT_MASK; 195e705c121SKalle Valo agg_size >>= 196e705c121SKalle Valo IEEE80211_VHT_CAP_MAX_A_MPDU_LENGTH_EXPONENT_SHIFT; 197e705c121SKalle Valo } else if (sta->ht_cap.ht_supported) { 198e705c121SKalle Valo agg_size = sta->ht_cap.ampdu_factor; 199e705c121SKalle Valo } 200e705c121SKalle Valo 201e705c121SKalle Valo add_sta_cmd.station_flags |= 202e705c121SKalle Valo cpu_to_le32(agg_size << STA_FLG_MAX_AGG_SIZE_SHIFT); 203e705c121SKalle Valo add_sta_cmd.station_flags |= 204e705c121SKalle Valo cpu_to_le32(mpdu_dens << STA_FLG_AGG_MPDU_DENS_SHIFT); 205e705c121SKalle Valo 206e705c121SKalle Valo status = ADD_STA_SUCCESS; 207854c5705SSara Sharon ret = iwl_mvm_send_cmd_pdu_status(mvm, ADD_STA, 208854c5705SSara Sharon iwl_mvm_add_sta_cmd_size(mvm), 209e705c121SKalle Valo &add_sta_cmd, &status); 210e705c121SKalle Valo if (ret) 211e705c121SKalle Valo return ret; 212e705c121SKalle Valo 213837c4da9SSara Sharon switch (status & IWL_ADD_STA_STATUS_MASK) { 214e705c121SKalle Valo case ADD_STA_SUCCESS: 215e705c121SKalle Valo IWL_DEBUG_ASSOC(mvm, "ADD_STA PASSED\n"); 216e705c121SKalle Valo break; 217e705c121SKalle Valo default: 218e705c121SKalle Valo ret = -EIO; 219e705c121SKalle Valo IWL_ERR(mvm, "ADD_STA failed\n"); 220e705c121SKalle Valo break; 221e705c121SKalle Valo } 222e705c121SKalle Valo 223e705c121SKalle Valo return ret; 224e705c121SKalle Valo } 225e705c121SKalle Valo 22610b2b201SSara Sharon static void iwl_mvm_rx_agg_session_expired(unsigned long data) 22710b2b201SSara Sharon { 22810b2b201SSara Sharon struct iwl_mvm_baid_data __rcu **rcu_ptr = (void *)data; 22910b2b201SSara Sharon struct iwl_mvm_baid_data *ba_data; 23010b2b201SSara Sharon struct ieee80211_sta *sta; 23110b2b201SSara Sharon struct iwl_mvm_sta *mvm_sta; 23210b2b201SSara Sharon unsigned long timeout; 23310b2b201SSara Sharon 23410b2b201SSara Sharon rcu_read_lock(); 23510b2b201SSara Sharon 23610b2b201SSara Sharon ba_data = rcu_dereference(*rcu_ptr); 23710b2b201SSara Sharon 23810b2b201SSara Sharon if (WARN_ON(!ba_data)) 23910b2b201SSara Sharon goto unlock; 24010b2b201SSara Sharon 24110b2b201SSara Sharon if (!ba_data->timeout) 24210b2b201SSara Sharon goto unlock; 24310b2b201SSara Sharon 24410b2b201SSara Sharon timeout = ba_data->last_rx + TU_TO_JIFFIES(ba_data->timeout * 2); 24510b2b201SSara Sharon if (time_is_after_jiffies(timeout)) { 24610b2b201SSara Sharon mod_timer(&ba_data->session_timer, timeout); 24710b2b201SSara Sharon goto unlock; 24810b2b201SSara Sharon } 24910b2b201SSara Sharon 25010b2b201SSara Sharon /* Timer expired */ 25110b2b201SSara Sharon sta = rcu_dereference(ba_data->mvm->fw_id_to_mac_id[ba_data->sta_id]); 25210b2b201SSara Sharon mvm_sta = iwl_mvm_sta_from_mac80211(sta); 25310b2b201SSara Sharon ieee80211_stop_rx_ba_session_offl(mvm_sta->vif, 25410b2b201SSara Sharon sta->addr, ba_data->tid); 25510b2b201SSara Sharon unlock: 25610b2b201SSara Sharon rcu_read_unlock(); 25710b2b201SSara Sharon } 25810b2b201SSara Sharon 259e705c121SKalle Valo static int iwl_mvm_tdls_sta_init(struct iwl_mvm *mvm, 260e705c121SKalle Valo struct ieee80211_sta *sta) 261e705c121SKalle Valo { 262e705c121SKalle Valo unsigned long used_hw_queues; 263e705c121SKalle Valo struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta); 264e705c121SKalle Valo unsigned int wdg_timeout = 265e705c121SKalle Valo iwl_mvm_get_wd_timeout(mvm, NULL, true, false); 266e705c121SKalle Valo u32 ac; 267e705c121SKalle Valo 268e705c121SKalle Valo lockdep_assert_held(&mvm->mutex); 269e705c121SKalle Valo 270e705c121SKalle Valo used_hw_queues = iwl_mvm_get_used_hw_queues(mvm, NULL); 271e705c121SKalle Valo 272e705c121SKalle Valo /* Find available queues, and allocate them to the ACs */ 273e705c121SKalle Valo for (ac = 0; ac < IEEE80211_NUM_ACS; ac++) { 274e705c121SKalle Valo u8 queue = find_first_zero_bit(&used_hw_queues, 275e705c121SKalle Valo mvm->first_agg_queue); 276e705c121SKalle Valo 277e705c121SKalle Valo if (queue >= mvm->first_agg_queue) { 278e705c121SKalle Valo IWL_ERR(mvm, "Failed to allocate STA queue\n"); 279e705c121SKalle Valo return -EBUSY; 280e705c121SKalle Valo } 281e705c121SKalle Valo 282e705c121SKalle Valo __set_bit(queue, &used_hw_queues); 283e705c121SKalle Valo mvmsta->hw_queue[ac] = queue; 284e705c121SKalle Valo } 285e705c121SKalle Valo 286e705c121SKalle Valo /* Found a place for all queues - enable them */ 287e705c121SKalle Valo for (ac = 0; ac < IEEE80211_NUM_ACS; ac++) { 288e705c121SKalle Valo iwl_mvm_enable_ac_txq(mvm, mvmsta->hw_queue[ac], 289e705c121SKalle Valo mvmsta->hw_queue[ac], 290e705c121SKalle Valo iwl_mvm_ac_to_tx_fifo[ac], 0, 291e705c121SKalle Valo wdg_timeout); 292e705c121SKalle Valo mvmsta->tfd_queue_msk |= BIT(mvmsta->hw_queue[ac]); 293e705c121SKalle Valo } 294e705c121SKalle Valo 295e705c121SKalle Valo return 0; 296e705c121SKalle Valo } 297e705c121SKalle Valo 298e705c121SKalle Valo static void iwl_mvm_tdls_sta_deinit(struct iwl_mvm *mvm, 299e705c121SKalle Valo struct ieee80211_sta *sta) 300e705c121SKalle Valo { 301e705c121SKalle Valo struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta); 302e705c121SKalle Valo unsigned long sta_msk; 303e705c121SKalle Valo int i; 304e705c121SKalle Valo 305e705c121SKalle Valo lockdep_assert_held(&mvm->mutex); 306e705c121SKalle Valo 307e705c121SKalle Valo /* disable the TDLS STA-specific queues */ 308e705c121SKalle Valo sta_msk = mvmsta->tfd_queue_msk; 309e705c121SKalle Valo for_each_set_bit(i, &sta_msk, sizeof(sta_msk) * BITS_PER_BYTE) 310e705c121SKalle Valo iwl_mvm_disable_txq(mvm, i, i, IWL_MAX_TID_COUNT, 0); 311e705c121SKalle Valo } 312e705c121SKalle Valo 3139794c64fSLiad Kaufman /* Disable aggregations for a bitmap of TIDs for a given station */ 3149794c64fSLiad Kaufman static int iwl_mvm_invalidate_sta_queue(struct iwl_mvm *mvm, int queue, 3159794c64fSLiad Kaufman unsigned long disable_agg_tids, 3169794c64fSLiad Kaufman bool remove_queue) 3179794c64fSLiad Kaufman { 3189794c64fSLiad Kaufman struct iwl_mvm_add_sta_cmd cmd = {}; 3199794c64fSLiad Kaufman struct ieee80211_sta *sta; 3209794c64fSLiad Kaufman struct iwl_mvm_sta *mvmsta; 3219794c64fSLiad Kaufman u32 status; 3229794c64fSLiad Kaufman u8 sta_id; 3239794c64fSLiad Kaufman int ret; 3249794c64fSLiad Kaufman 3259794c64fSLiad Kaufman spin_lock_bh(&mvm->queue_info_lock); 3269794c64fSLiad Kaufman sta_id = mvm->queue_info[queue].ra_sta_id; 3279794c64fSLiad Kaufman spin_unlock_bh(&mvm->queue_info_lock); 3289794c64fSLiad Kaufman 3299794c64fSLiad Kaufman rcu_read_lock(); 3309794c64fSLiad Kaufman 3319794c64fSLiad Kaufman sta = rcu_dereference(mvm->fw_id_to_mac_id[sta_id]); 3329794c64fSLiad Kaufman 3339794c64fSLiad Kaufman if (WARN_ON_ONCE(IS_ERR_OR_NULL(sta))) { 3349794c64fSLiad Kaufman rcu_read_unlock(); 3359794c64fSLiad Kaufman return -EINVAL; 3369794c64fSLiad Kaufman } 3379794c64fSLiad Kaufman 3389794c64fSLiad Kaufman mvmsta = iwl_mvm_sta_from_mac80211(sta); 3399794c64fSLiad Kaufman 3409794c64fSLiad Kaufman mvmsta->tid_disable_agg |= disable_agg_tids; 3419794c64fSLiad Kaufman 3429794c64fSLiad Kaufman cmd.mac_id_n_color = cpu_to_le32(mvmsta->mac_id_n_color); 3439794c64fSLiad Kaufman cmd.sta_id = mvmsta->sta_id; 3449794c64fSLiad Kaufman cmd.add_modify = STA_MODE_MODIFY; 3459794c64fSLiad Kaufman cmd.modify_mask = STA_MODIFY_QUEUES; 3469794c64fSLiad Kaufman if (disable_agg_tids) 3479794c64fSLiad Kaufman cmd.modify_mask |= STA_MODIFY_TID_DISABLE_TX; 3489794c64fSLiad Kaufman if (remove_queue) 3499794c64fSLiad Kaufman cmd.modify_mask |= STA_MODIFY_QUEUE_REMOVAL; 3509794c64fSLiad Kaufman cmd.tfd_queue_msk = cpu_to_le32(mvmsta->tfd_queue_msk); 3519794c64fSLiad Kaufman cmd.tid_disable_tx = cpu_to_le16(mvmsta->tid_disable_agg); 3529794c64fSLiad Kaufman 3539794c64fSLiad Kaufman rcu_read_unlock(); 3549794c64fSLiad Kaufman 3559794c64fSLiad Kaufman /* Notify FW of queue removal from the STA queues */ 3569794c64fSLiad Kaufman status = ADD_STA_SUCCESS; 3579794c64fSLiad Kaufman ret = iwl_mvm_send_cmd_pdu_status(mvm, ADD_STA, 3589794c64fSLiad Kaufman iwl_mvm_add_sta_cmd_size(mvm), 3599794c64fSLiad Kaufman &cmd, &status); 3609794c64fSLiad Kaufman 3619794c64fSLiad Kaufman return ret; 3629794c64fSLiad Kaufman } 3639794c64fSLiad Kaufman 36442db09c1SLiad Kaufman static int iwl_mvm_get_queue_agg_tids(struct iwl_mvm *mvm, int queue) 36542db09c1SLiad Kaufman { 36642db09c1SLiad Kaufman struct ieee80211_sta *sta; 36742db09c1SLiad Kaufman struct iwl_mvm_sta *mvmsta; 36842db09c1SLiad Kaufman unsigned long tid_bitmap; 36942db09c1SLiad Kaufman unsigned long agg_tids = 0; 37042db09c1SLiad Kaufman s8 sta_id; 37142db09c1SLiad Kaufman int tid; 37242db09c1SLiad Kaufman 37342db09c1SLiad Kaufman lockdep_assert_held(&mvm->mutex); 37442db09c1SLiad Kaufman 37542db09c1SLiad Kaufman spin_lock_bh(&mvm->queue_info_lock); 37642db09c1SLiad Kaufman sta_id = mvm->queue_info[queue].ra_sta_id; 37742db09c1SLiad Kaufman tid_bitmap = mvm->queue_info[queue].tid_bitmap; 37842db09c1SLiad Kaufman spin_unlock_bh(&mvm->queue_info_lock); 37942db09c1SLiad Kaufman 38042db09c1SLiad Kaufman sta = rcu_dereference_protected(mvm->fw_id_to_mac_id[sta_id], 38142db09c1SLiad Kaufman lockdep_is_held(&mvm->mutex)); 38242db09c1SLiad Kaufman 38342db09c1SLiad Kaufman if (WARN_ON_ONCE(IS_ERR_OR_NULL(sta))) 38442db09c1SLiad Kaufman return -EINVAL; 38542db09c1SLiad Kaufman 38642db09c1SLiad Kaufman mvmsta = iwl_mvm_sta_from_mac80211(sta); 38742db09c1SLiad Kaufman 38842db09c1SLiad Kaufman spin_lock_bh(&mvmsta->lock); 38942db09c1SLiad Kaufman for_each_set_bit(tid, &tid_bitmap, IWL_MAX_TID_COUNT + 1) { 39042db09c1SLiad Kaufman if (mvmsta->tid_data[tid].state == IWL_AGG_ON) 39142db09c1SLiad Kaufman agg_tids |= BIT(tid); 39242db09c1SLiad Kaufman } 39342db09c1SLiad Kaufman spin_unlock_bh(&mvmsta->lock); 39442db09c1SLiad Kaufman 39542db09c1SLiad Kaufman return agg_tids; 39642db09c1SLiad Kaufman } 39742db09c1SLiad Kaufman 3989794c64fSLiad Kaufman /* 3999794c64fSLiad Kaufman * Remove a queue from a station's resources. 4009794c64fSLiad Kaufman * Note that this only marks as free. It DOESN'T delete a BA agreement, and 4019794c64fSLiad Kaufman * doesn't disable the queue 4029794c64fSLiad Kaufman */ 4039794c64fSLiad Kaufman static int iwl_mvm_remove_sta_queue_marking(struct iwl_mvm *mvm, int queue) 4049794c64fSLiad Kaufman { 4059794c64fSLiad Kaufman struct ieee80211_sta *sta; 4069794c64fSLiad Kaufman struct iwl_mvm_sta *mvmsta; 4079794c64fSLiad Kaufman unsigned long tid_bitmap; 4089794c64fSLiad Kaufman unsigned long disable_agg_tids = 0; 4099794c64fSLiad Kaufman u8 sta_id; 4109794c64fSLiad Kaufman int tid; 4119794c64fSLiad Kaufman 4129794c64fSLiad Kaufman lockdep_assert_held(&mvm->mutex); 4139794c64fSLiad Kaufman 4149794c64fSLiad Kaufman spin_lock_bh(&mvm->queue_info_lock); 4159794c64fSLiad Kaufman sta_id = mvm->queue_info[queue].ra_sta_id; 4169794c64fSLiad Kaufman tid_bitmap = mvm->queue_info[queue].tid_bitmap; 4179794c64fSLiad Kaufman spin_unlock_bh(&mvm->queue_info_lock); 4189794c64fSLiad Kaufman 4199794c64fSLiad Kaufman rcu_read_lock(); 4209794c64fSLiad Kaufman 4219794c64fSLiad Kaufman sta = rcu_dereference(mvm->fw_id_to_mac_id[sta_id]); 4229794c64fSLiad Kaufman 4239794c64fSLiad Kaufman if (WARN_ON_ONCE(IS_ERR_OR_NULL(sta))) { 4249794c64fSLiad Kaufman rcu_read_unlock(); 4259794c64fSLiad Kaufman return 0; 4269794c64fSLiad Kaufman } 4279794c64fSLiad Kaufman 4289794c64fSLiad Kaufman mvmsta = iwl_mvm_sta_from_mac80211(sta); 4299794c64fSLiad Kaufman 4309794c64fSLiad Kaufman spin_lock_bh(&mvmsta->lock); 43142db09c1SLiad Kaufman /* Unmap MAC queues and TIDs from this queue */ 4329794c64fSLiad Kaufman for_each_set_bit(tid, &tid_bitmap, IWL_MAX_TID_COUNT + 1) { 4339794c64fSLiad Kaufman if (mvmsta->tid_data[tid].state == IWL_AGG_ON) 4349794c64fSLiad Kaufman disable_agg_tids |= BIT(tid); 43542db09c1SLiad Kaufman mvmsta->tid_data[tid].txq_id = IEEE80211_INVAL_HW_QUEUE; 4369794c64fSLiad Kaufman } 4379794c64fSLiad Kaufman 43842db09c1SLiad Kaufman mvmsta->tfd_queue_msk &= ~BIT(queue); /* Don't use this queue anymore */ 4399794c64fSLiad Kaufman spin_unlock_bh(&mvmsta->lock); 4409794c64fSLiad Kaufman 4419794c64fSLiad Kaufman rcu_read_unlock(); 4429794c64fSLiad Kaufman 44342db09c1SLiad Kaufman spin_lock_bh(&mvm->queue_info_lock); 4449794c64fSLiad Kaufman /* Unmap MAC queues and TIDs from this queue */ 4459794c64fSLiad Kaufman mvm->queue_info[queue].hw_queue_to_mac80211 = 0; 4469794c64fSLiad Kaufman mvm->queue_info[queue].hw_queue_refcount = 0; 4479794c64fSLiad Kaufman mvm->queue_info[queue].tid_bitmap = 0; 44842db09c1SLiad Kaufman spin_unlock_bh(&mvm->queue_info_lock); 4499794c64fSLiad Kaufman 4509794c64fSLiad Kaufman return disable_agg_tids; 4519794c64fSLiad Kaufman } 4529794c64fSLiad Kaufman 45342db09c1SLiad Kaufman static int iwl_mvm_get_shared_queue(struct iwl_mvm *mvm, 45442db09c1SLiad Kaufman unsigned long tfd_queue_mask, u8 ac) 45542db09c1SLiad Kaufman { 45642db09c1SLiad Kaufman int queue = 0; 45742db09c1SLiad Kaufman u8 ac_to_queue[IEEE80211_NUM_ACS]; 45842db09c1SLiad Kaufman int i; 45942db09c1SLiad Kaufman 46042db09c1SLiad Kaufman lockdep_assert_held(&mvm->queue_info_lock); 46142db09c1SLiad Kaufman 46242db09c1SLiad Kaufman memset(&ac_to_queue, IEEE80211_INVAL_HW_QUEUE, sizeof(ac_to_queue)); 46342db09c1SLiad Kaufman 46442db09c1SLiad Kaufman /* See what ACs the existing queues for this STA have */ 46542db09c1SLiad Kaufman for_each_set_bit(i, &tfd_queue_mask, IWL_MVM_DQA_MAX_DATA_QUEUE) { 46642db09c1SLiad Kaufman /* Only DATA queues can be shared */ 46742db09c1SLiad Kaufman if (i < IWL_MVM_DQA_MIN_DATA_QUEUE && 46842db09c1SLiad Kaufman i != IWL_MVM_DQA_BSS_CLIENT_QUEUE) 46942db09c1SLiad Kaufman continue; 47042db09c1SLiad Kaufman 4719f9af3d7SLiad Kaufman /* Don't try and take queues being reconfigured */ 4729f9af3d7SLiad Kaufman if (mvm->queue_info[queue].status == 4739f9af3d7SLiad Kaufman IWL_MVM_QUEUE_RECONFIGURING) 4749f9af3d7SLiad Kaufman continue; 4759f9af3d7SLiad Kaufman 47642db09c1SLiad Kaufman ac_to_queue[mvm->queue_info[i].mac80211_ac] = i; 47742db09c1SLiad Kaufman } 47842db09c1SLiad Kaufman 47942db09c1SLiad Kaufman /* 48042db09c1SLiad Kaufman * The queue to share is chosen only from DATA queues as follows (in 48142db09c1SLiad Kaufman * descending priority): 48242db09c1SLiad Kaufman * 1. An AC_BE queue 48342db09c1SLiad Kaufman * 2. Same AC queue 48442db09c1SLiad Kaufman * 3. Highest AC queue that is lower than new AC 48542db09c1SLiad Kaufman * 4. Any existing AC (there always is at least 1 DATA queue) 48642db09c1SLiad Kaufman */ 48742db09c1SLiad Kaufman 48842db09c1SLiad Kaufman /* Priority 1: An AC_BE queue */ 48942db09c1SLiad Kaufman if (ac_to_queue[IEEE80211_AC_BE] != IEEE80211_INVAL_HW_QUEUE) 49042db09c1SLiad Kaufman queue = ac_to_queue[IEEE80211_AC_BE]; 49142db09c1SLiad Kaufman /* Priority 2: Same AC queue */ 49242db09c1SLiad Kaufman else if (ac_to_queue[ac] != IEEE80211_INVAL_HW_QUEUE) 49342db09c1SLiad Kaufman queue = ac_to_queue[ac]; 49442db09c1SLiad Kaufman /* Priority 3a: If new AC is VO and VI exists - use VI */ 49542db09c1SLiad Kaufman else if (ac == IEEE80211_AC_VO && 49642db09c1SLiad Kaufman ac_to_queue[IEEE80211_AC_VI] != IEEE80211_INVAL_HW_QUEUE) 49742db09c1SLiad Kaufman queue = ac_to_queue[IEEE80211_AC_VI]; 49842db09c1SLiad Kaufman /* Priority 3b: No BE so only AC less than the new one is BK */ 49942db09c1SLiad Kaufman else if (ac_to_queue[IEEE80211_AC_BK] != IEEE80211_INVAL_HW_QUEUE) 50042db09c1SLiad Kaufman queue = ac_to_queue[IEEE80211_AC_BK]; 50142db09c1SLiad Kaufman /* Priority 4a: No BE nor BK - use VI if exists */ 50242db09c1SLiad Kaufman else if (ac_to_queue[IEEE80211_AC_VI] != IEEE80211_INVAL_HW_QUEUE) 50342db09c1SLiad Kaufman queue = ac_to_queue[IEEE80211_AC_VI]; 50442db09c1SLiad Kaufman /* Priority 4b: No BE, BK nor VI - use VO if exists */ 50542db09c1SLiad Kaufman else if (ac_to_queue[IEEE80211_AC_VO] != IEEE80211_INVAL_HW_QUEUE) 50642db09c1SLiad Kaufman queue = ac_to_queue[IEEE80211_AC_VO]; 50742db09c1SLiad Kaufman 50842db09c1SLiad Kaufman /* Make sure queue found (or not) is legal */ 5099f9af3d7SLiad Kaufman if (!iwl_mvm_is_dqa_data_queue(mvm, queue) && 5109f9af3d7SLiad Kaufman !iwl_mvm_is_dqa_mgmt_queue(mvm, queue) && 5119f9af3d7SLiad Kaufman (queue != IWL_MVM_DQA_BSS_CLIENT_QUEUE)) { 51242db09c1SLiad Kaufman IWL_ERR(mvm, "No DATA queues available to share\n"); 5139f9af3d7SLiad Kaufman return -ENOSPC; 5149f9af3d7SLiad Kaufman } 5159f9af3d7SLiad Kaufman 5169f9af3d7SLiad Kaufman /* Make sure the queue isn't in the middle of being reconfigured */ 5179f9af3d7SLiad Kaufman if (mvm->queue_info[queue].status == IWL_MVM_QUEUE_RECONFIGURING) { 5189f9af3d7SLiad Kaufman IWL_ERR(mvm, 5199f9af3d7SLiad Kaufman "TXQ %d is in the middle of re-config - try again\n", 5209f9af3d7SLiad Kaufman queue); 5219f9af3d7SLiad Kaufman return -EBUSY; 52242db09c1SLiad Kaufman } 52342db09c1SLiad Kaufman 52442db09c1SLiad Kaufman return queue; 52542db09c1SLiad Kaufman } 52642db09c1SLiad Kaufman 52758f2cc57SLiad Kaufman /* 5289f9af3d7SLiad Kaufman * If a given queue has a higher AC than the TID stream that is being compared 5299f9af3d7SLiad Kaufman * to, the queue needs to be redirected to the lower AC. This function does that 53058f2cc57SLiad Kaufman * in such a case, otherwise - if no redirection required - it does nothing, 53158f2cc57SLiad Kaufman * unless the %force param is true. 53258f2cc57SLiad Kaufman */ 5339f9af3d7SLiad Kaufman int iwl_mvm_scd_queue_redirect(struct iwl_mvm *mvm, int queue, int tid, 53458f2cc57SLiad Kaufman int ac, int ssn, unsigned int wdg_timeout, 53558f2cc57SLiad Kaufman bool force) 53658f2cc57SLiad Kaufman { 53758f2cc57SLiad Kaufman struct iwl_scd_txq_cfg_cmd cmd = { 53858f2cc57SLiad Kaufman .scd_queue = queue, 53958f2cc57SLiad Kaufman .enable = 0, 54058f2cc57SLiad Kaufman }; 54158f2cc57SLiad Kaufman bool shared_queue; 54258f2cc57SLiad Kaufman unsigned long mq; 54358f2cc57SLiad Kaufman int ret; 54458f2cc57SLiad Kaufman 54558f2cc57SLiad Kaufman /* 54658f2cc57SLiad Kaufman * If the AC is lower than current one - FIFO needs to be redirected to 54758f2cc57SLiad Kaufman * the lowest one of the streams in the queue. Check if this is needed 54858f2cc57SLiad Kaufman * here. 54958f2cc57SLiad Kaufman * Notice that the enum ieee80211_ac_numbers is "flipped", so BK is with 55058f2cc57SLiad Kaufman * value 3 and VO with value 0, so to check if ac X is lower than ac Y 55158f2cc57SLiad Kaufman * we need to check if the numerical value of X is LARGER than of Y. 55258f2cc57SLiad Kaufman */ 55358f2cc57SLiad Kaufman spin_lock_bh(&mvm->queue_info_lock); 55458f2cc57SLiad Kaufman if (ac <= mvm->queue_info[queue].mac80211_ac && !force) { 55558f2cc57SLiad Kaufman spin_unlock_bh(&mvm->queue_info_lock); 55658f2cc57SLiad Kaufman 55758f2cc57SLiad Kaufman IWL_DEBUG_TX_QUEUES(mvm, 55858f2cc57SLiad Kaufman "No redirection needed on TXQ #%d\n", 55958f2cc57SLiad Kaufman queue); 56058f2cc57SLiad Kaufman return 0; 56158f2cc57SLiad Kaufman } 56258f2cc57SLiad Kaufman 56358f2cc57SLiad Kaufman cmd.sta_id = mvm->queue_info[queue].ra_sta_id; 56458f2cc57SLiad Kaufman cmd.tx_fifo = iwl_mvm_ac_to_tx_fifo[mvm->queue_info[queue].mac80211_ac]; 565edbe961cSLiad Kaufman cmd.tid = mvm->queue_info[queue].txq_tid; 56658f2cc57SLiad Kaufman mq = mvm->queue_info[queue].hw_queue_to_mac80211; 56758f2cc57SLiad Kaufman shared_queue = (mvm->queue_info[queue].hw_queue_refcount > 1); 56858f2cc57SLiad Kaufman spin_unlock_bh(&mvm->queue_info_lock); 56958f2cc57SLiad Kaufman 5709f9af3d7SLiad Kaufman IWL_DEBUG_TX_QUEUES(mvm, "Redirecting TXQ #%d to FIFO #%d\n", 57158f2cc57SLiad Kaufman queue, iwl_mvm_ac_to_tx_fifo[ac]); 57258f2cc57SLiad Kaufman 57358f2cc57SLiad Kaufman /* Stop MAC queues and wait for this queue to empty */ 57458f2cc57SLiad Kaufman iwl_mvm_stop_mac_queues(mvm, mq); 57558f2cc57SLiad Kaufman ret = iwl_trans_wait_tx_queue_empty(mvm->trans, BIT(queue)); 57658f2cc57SLiad Kaufman if (ret) { 57758f2cc57SLiad Kaufman IWL_ERR(mvm, "Error draining queue %d before reconfig\n", 57858f2cc57SLiad Kaufman queue); 57958f2cc57SLiad Kaufman ret = -EIO; 58058f2cc57SLiad Kaufman goto out; 58158f2cc57SLiad Kaufman } 58258f2cc57SLiad Kaufman 58358f2cc57SLiad Kaufman /* Before redirecting the queue we need to de-activate it */ 58458f2cc57SLiad Kaufman iwl_trans_txq_disable(mvm->trans, queue, false); 58558f2cc57SLiad Kaufman ret = iwl_mvm_send_cmd_pdu(mvm, SCD_QUEUE_CFG, 0, sizeof(cmd), &cmd); 58658f2cc57SLiad Kaufman if (ret) 58758f2cc57SLiad Kaufman IWL_ERR(mvm, "Failed SCD disable TXQ %d (ret=%d)\n", queue, 58858f2cc57SLiad Kaufman ret); 58958f2cc57SLiad Kaufman 59058f2cc57SLiad Kaufman /* Make sure the SCD wrptr is correctly set before reconfiguring */ 59158f2cc57SLiad Kaufman iwl_trans_txq_enable(mvm->trans, queue, iwl_mvm_ac_to_tx_fifo[ac], 59258f2cc57SLiad Kaufman cmd.sta_id, tid, LINK_QUAL_AGG_FRAME_LIMIT_DEF, 59358f2cc57SLiad Kaufman ssn, wdg_timeout); 59458f2cc57SLiad Kaufman 595edbe961cSLiad Kaufman /* Update the TID "owner" of the queue */ 596edbe961cSLiad Kaufman spin_lock_bh(&mvm->queue_info_lock); 597edbe961cSLiad Kaufman mvm->queue_info[queue].txq_tid = tid; 598edbe961cSLiad Kaufman spin_unlock_bh(&mvm->queue_info_lock); 599edbe961cSLiad Kaufman 60058f2cc57SLiad Kaufman /* TODO: Work-around SCD bug when moving back by multiples of 0x40 */ 60158f2cc57SLiad Kaufman 60258f2cc57SLiad Kaufman /* Redirect to lower AC */ 60358f2cc57SLiad Kaufman iwl_mvm_reconfig_scd(mvm, queue, iwl_mvm_ac_to_tx_fifo[ac], 60458f2cc57SLiad Kaufman cmd.sta_id, tid, LINK_QUAL_AGG_FRAME_LIMIT_DEF, 60558f2cc57SLiad Kaufman ssn); 60658f2cc57SLiad Kaufman 60758f2cc57SLiad Kaufman /* Update AC marking of the queue */ 60858f2cc57SLiad Kaufman spin_lock_bh(&mvm->queue_info_lock); 60958f2cc57SLiad Kaufman mvm->queue_info[queue].mac80211_ac = ac; 61058f2cc57SLiad Kaufman spin_unlock_bh(&mvm->queue_info_lock); 61158f2cc57SLiad Kaufman 61258f2cc57SLiad Kaufman /* 61358f2cc57SLiad Kaufman * Mark queue as shared in transport if shared 61458f2cc57SLiad Kaufman * Note this has to be done after queue enablement because enablement 61558f2cc57SLiad Kaufman * can also set this value, and there is no indication there to shared 61658f2cc57SLiad Kaufman * queues 61758f2cc57SLiad Kaufman */ 61858f2cc57SLiad Kaufman if (shared_queue) 61958f2cc57SLiad Kaufman iwl_trans_txq_set_shared_mode(mvm->trans, queue, true); 62058f2cc57SLiad Kaufman 62158f2cc57SLiad Kaufman out: 62258f2cc57SLiad Kaufman /* Continue using the MAC queues */ 62358f2cc57SLiad Kaufman iwl_mvm_start_mac_queues(mvm, mq); 62458f2cc57SLiad Kaufman 62558f2cc57SLiad Kaufman return ret; 62658f2cc57SLiad Kaufman } 62758f2cc57SLiad Kaufman 62824afba76SLiad Kaufman static int iwl_mvm_sta_alloc_queue(struct iwl_mvm *mvm, 62924afba76SLiad Kaufman struct ieee80211_sta *sta, u8 ac, int tid, 63024afba76SLiad Kaufman struct ieee80211_hdr *hdr) 63124afba76SLiad Kaufman { 63224afba76SLiad Kaufman struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta); 63324afba76SLiad Kaufman struct iwl_trans_txq_scd_cfg cfg = { 63424afba76SLiad Kaufman .fifo = iwl_mvm_ac_to_tx_fifo[ac], 63524afba76SLiad Kaufman .sta_id = mvmsta->sta_id, 63624afba76SLiad Kaufman .tid = tid, 63724afba76SLiad Kaufman .frame_limit = IWL_FRAME_LIMIT, 63824afba76SLiad Kaufman }; 63924afba76SLiad Kaufman unsigned int wdg_timeout = 64024afba76SLiad Kaufman iwl_mvm_get_wd_timeout(mvm, mvmsta->vif, false, false); 64124afba76SLiad Kaufman u8 mac_queue = mvmsta->vif->hw_queue[ac]; 64224afba76SLiad Kaufman int queue = -1; 6439794c64fSLiad Kaufman bool using_inactive_queue = false; 6449794c64fSLiad Kaufman unsigned long disable_agg_tids = 0; 6459794c64fSLiad Kaufman enum iwl_mvm_agg_state queue_state; 64642db09c1SLiad Kaufman bool shared_queue = false; 64724afba76SLiad Kaufman int ssn; 64842db09c1SLiad Kaufman unsigned long tfd_queue_mask; 649cf961e16SLiad Kaufman int ret; 65024afba76SLiad Kaufman 65124afba76SLiad Kaufman lockdep_assert_held(&mvm->mutex); 65224afba76SLiad Kaufman 65342db09c1SLiad Kaufman spin_lock_bh(&mvmsta->lock); 65442db09c1SLiad Kaufman tfd_queue_mask = mvmsta->tfd_queue_msk; 65542db09c1SLiad Kaufman spin_unlock_bh(&mvmsta->lock); 65642db09c1SLiad Kaufman 657d2515a99SLiad Kaufman spin_lock_bh(&mvm->queue_info_lock); 65824afba76SLiad Kaufman 65924afba76SLiad Kaufman /* 66024afba76SLiad Kaufman * Non-QoS, QoS NDP and MGMT frames should go to a MGMT queue, if one 66124afba76SLiad Kaufman * exists 66224afba76SLiad Kaufman */ 66324afba76SLiad Kaufman if (!ieee80211_is_data_qos(hdr->frame_control) || 66424afba76SLiad Kaufman ieee80211_is_qos_nullfunc(hdr->frame_control)) { 6659794c64fSLiad Kaufman queue = iwl_mvm_find_free_queue(mvm, mvmsta->sta_id, 6669794c64fSLiad Kaufman IWL_MVM_DQA_MIN_MGMT_QUEUE, 66724afba76SLiad Kaufman IWL_MVM_DQA_MAX_MGMT_QUEUE); 66824afba76SLiad Kaufman if (queue >= IWL_MVM_DQA_MIN_MGMT_QUEUE) 66924afba76SLiad Kaufman IWL_DEBUG_TX_QUEUES(mvm, "Found free MGMT queue #%d\n", 67024afba76SLiad Kaufman queue); 67124afba76SLiad Kaufman 67224afba76SLiad Kaufman /* If no such queue is found, we'll use a DATA queue instead */ 67324afba76SLiad Kaufman } 67424afba76SLiad Kaufman 6759794c64fSLiad Kaufman if ((queue < 0 && mvmsta->reserved_queue != IEEE80211_INVAL_HW_QUEUE) && 6769794c64fSLiad Kaufman (mvm->queue_info[mvmsta->reserved_queue].status == 6779794c64fSLiad Kaufman IWL_MVM_QUEUE_RESERVED || 6789794c64fSLiad Kaufman mvm->queue_info[mvmsta->reserved_queue].status == 6799794c64fSLiad Kaufman IWL_MVM_QUEUE_INACTIVE)) { 68024afba76SLiad Kaufman queue = mvmsta->reserved_queue; 6819794c64fSLiad Kaufman mvm->queue_info[queue].reserved = true; 68224afba76SLiad Kaufman IWL_DEBUG_TX_QUEUES(mvm, "Using reserved queue #%d\n", queue); 68324afba76SLiad Kaufman } 68424afba76SLiad Kaufman 68524afba76SLiad Kaufman if (queue < 0) 6869794c64fSLiad Kaufman queue = iwl_mvm_find_free_queue(mvm, mvmsta->sta_id, 6879794c64fSLiad Kaufman IWL_MVM_DQA_MIN_DATA_QUEUE, 68824afba76SLiad Kaufman IWL_MVM_DQA_MAX_DATA_QUEUE); 689cf961e16SLiad Kaufman 690cf961e16SLiad Kaufman /* 6919794c64fSLiad Kaufman * Check if this queue is already allocated but inactive. 6929794c64fSLiad Kaufman * In such a case, we'll need to first free this queue before enabling 6939794c64fSLiad Kaufman * it again, so we'll mark it as reserved to make sure no new traffic 6949794c64fSLiad Kaufman * arrives on it 6959794c64fSLiad Kaufman */ 6969794c64fSLiad Kaufman if (queue > 0 && 6979794c64fSLiad Kaufman mvm->queue_info[queue].status == IWL_MVM_QUEUE_INACTIVE) { 6989794c64fSLiad Kaufman mvm->queue_info[queue].status = IWL_MVM_QUEUE_RESERVED; 6999794c64fSLiad Kaufman using_inactive_queue = true; 7009794c64fSLiad Kaufman IWL_DEBUG_TX_QUEUES(mvm, 7019794c64fSLiad Kaufman "Re-assigning TXQ %d: sta_id=%d, tid=%d\n", 7029794c64fSLiad Kaufman queue, mvmsta->sta_id, tid); 7039794c64fSLiad Kaufman } 7049794c64fSLiad Kaufman 70542db09c1SLiad Kaufman /* No free queue - we'll have to share */ 70642db09c1SLiad Kaufman if (queue <= 0) { 70742db09c1SLiad Kaufman queue = iwl_mvm_get_shared_queue(mvm, tfd_queue_mask, ac); 70842db09c1SLiad Kaufman if (queue > 0) { 70942db09c1SLiad Kaufman shared_queue = true; 71042db09c1SLiad Kaufman mvm->queue_info[queue].status = IWL_MVM_QUEUE_SHARED; 71142db09c1SLiad Kaufman } 71242db09c1SLiad Kaufman } 71342db09c1SLiad Kaufman 7149794c64fSLiad Kaufman /* 715cf961e16SLiad Kaufman * Mark TXQ as ready, even though it hasn't been fully configured yet, 716cf961e16SLiad Kaufman * to make sure no one else takes it. 717cf961e16SLiad Kaufman * This will allow avoiding re-acquiring the lock at the end of the 718cf961e16SLiad Kaufman * configuration. On error we'll mark it back as free. 719cf961e16SLiad Kaufman */ 72042db09c1SLiad Kaufman if ((queue > 0) && !shared_queue) 721cf961e16SLiad Kaufman mvm->queue_info[queue].status = IWL_MVM_QUEUE_READY; 72224afba76SLiad Kaufman 723d2515a99SLiad Kaufman spin_unlock_bh(&mvm->queue_info_lock); 72424afba76SLiad Kaufman 72542db09c1SLiad Kaufman /* This shouldn't happen - out of queues */ 72642db09c1SLiad Kaufman if (WARN_ON(queue <= 0)) { 72742db09c1SLiad Kaufman IWL_ERR(mvm, "No available queues for tid %d on sta_id %d\n", 72842db09c1SLiad Kaufman tid, cfg.sta_id); 7299f9af3d7SLiad Kaufman return queue; 73042db09c1SLiad Kaufman } 73124afba76SLiad Kaufman 73224afba76SLiad Kaufman /* 73324afba76SLiad Kaufman * Actual en/disablement of aggregations is through the ADD_STA HCMD, 73424afba76SLiad Kaufman * but for configuring the SCD to send A-MPDUs we need to mark the queue 73524afba76SLiad Kaufman * as aggregatable. 73624afba76SLiad Kaufman * Mark all DATA queues as allowing to be aggregated at some point 73724afba76SLiad Kaufman */ 738d5216a28SLiad Kaufman cfg.aggregate = (queue >= IWL_MVM_DQA_MIN_DATA_QUEUE || 739d5216a28SLiad Kaufman queue == IWL_MVM_DQA_BSS_CLIENT_QUEUE); 74024afba76SLiad Kaufman 7419794c64fSLiad Kaufman /* 7429794c64fSLiad Kaufman * If this queue was previously inactive (idle) - we need to free it 7439794c64fSLiad Kaufman * first 7449794c64fSLiad Kaufman */ 7459794c64fSLiad Kaufman if (using_inactive_queue) { 7469794c64fSLiad Kaufman struct iwl_scd_txq_cfg_cmd cmd = { 7479794c64fSLiad Kaufman .scd_queue = queue, 7489794c64fSLiad Kaufman .enable = 0, 7499794c64fSLiad Kaufman }; 75093f436e2SLiad Kaufman u8 ac; 7519794c64fSLiad Kaufman 7529794c64fSLiad Kaufman disable_agg_tids = iwl_mvm_remove_sta_queue_marking(mvm, queue); 7539794c64fSLiad Kaufman 75493f436e2SLiad Kaufman spin_lock_bh(&mvm->queue_info_lock); 75593f436e2SLiad Kaufman ac = mvm->queue_info[queue].mac80211_ac; 75693f436e2SLiad Kaufman cmd.sta_id = mvm->queue_info[queue].ra_sta_id; 75793f436e2SLiad Kaufman cmd.tx_fifo = iwl_mvm_ac_to_tx_fifo[ac]; 758edbe961cSLiad Kaufman cmd.tid = mvm->queue_info[queue].txq_tid; 75993f436e2SLiad Kaufman spin_unlock_bh(&mvm->queue_info_lock); 76093f436e2SLiad Kaufman 7619794c64fSLiad Kaufman /* Disable the queue */ 7629794c64fSLiad Kaufman iwl_mvm_invalidate_sta_queue(mvm, queue, disable_agg_tids, 7639794c64fSLiad Kaufman true); 7649794c64fSLiad Kaufman iwl_trans_txq_disable(mvm->trans, queue, false); 7659794c64fSLiad Kaufman ret = iwl_mvm_send_cmd_pdu(mvm, SCD_QUEUE_CFG, 0, sizeof(cmd), 7669794c64fSLiad Kaufman &cmd); 7679794c64fSLiad Kaufman if (ret) { 7689794c64fSLiad Kaufman IWL_ERR(mvm, 7699794c64fSLiad Kaufman "Failed to free inactive queue %d (ret=%d)\n", 7709794c64fSLiad Kaufman queue, ret); 7719794c64fSLiad Kaufman 7729794c64fSLiad Kaufman /* Re-mark the inactive queue as inactive */ 7739794c64fSLiad Kaufman spin_lock_bh(&mvm->queue_info_lock); 7749794c64fSLiad Kaufman mvm->queue_info[queue].status = IWL_MVM_QUEUE_INACTIVE; 7759794c64fSLiad Kaufman spin_unlock_bh(&mvm->queue_info_lock); 7769794c64fSLiad Kaufman 7779794c64fSLiad Kaufman return ret; 7789794c64fSLiad Kaufman } 7799794c64fSLiad Kaufman } 7809794c64fSLiad Kaufman 78142db09c1SLiad Kaufman IWL_DEBUG_TX_QUEUES(mvm, 78242db09c1SLiad Kaufman "Allocating %squeue #%d to sta %d on tid %d\n", 78342db09c1SLiad Kaufman shared_queue ? "shared " : "", queue, 78442db09c1SLiad Kaufman mvmsta->sta_id, tid); 78542db09c1SLiad Kaufman 78642db09c1SLiad Kaufman if (shared_queue) { 78742db09c1SLiad Kaufman /* Disable any open aggs on this queue */ 78842db09c1SLiad Kaufman disable_agg_tids = iwl_mvm_get_queue_agg_tids(mvm, queue); 78942db09c1SLiad Kaufman 79042db09c1SLiad Kaufman if (disable_agg_tids) { 79142db09c1SLiad Kaufman IWL_DEBUG_TX_QUEUES(mvm, "Disabling aggs on queue %d\n", 79242db09c1SLiad Kaufman queue); 79342db09c1SLiad Kaufman iwl_mvm_invalidate_sta_queue(mvm, queue, 79442db09c1SLiad Kaufman disable_agg_tids, false); 79542db09c1SLiad Kaufman } 79642db09c1SLiad Kaufman } 79724afba76SLiad Kaufman 79824afba76SLiad Kaufman ssn = IEEE80211_SEQ_TO_SN(le16_to_cpu(hdr->seq_ctrl)); 79924afba76SLiad Kaufman iwl_mvm_enable_txq(mvm, queue, mac_queue, ssn, &cfg, 80024afba76SLiad Kaufman wdg_timeout); 80124afba76SLiad Kaufman 80258f2cc57SLiad Kaufman /* 80358f2cc57SLiad Kaufman * Mark queue as shared in transport if shared 80458f2cc57SLiad Kaufman * Note this has to be done after queue enablement because enablement 80558f2cc57SLiad Kaufman * can also set this value, and there is no indication there to shared 80658f2cc57SLiad Kaufman * queues 80758f2cc57SLiad Kaufman */ 80858f2cc57SLiad Kaufman if (shared_queue) 80958f2cc57SLiad Kaufman iwl_trans_txq_set_shared_mode(mvm->trans, queue, true); 81058f2cc57SLiad Kaufman 81124afba76SLiad Kaufman spin_lock_bh(&mvmsta->lock); 81224afba76SLiad Kaufman mvmsta->tid_data[tid].txq_id = queue; 8139794c64fSLiad Kaufman mvmsta->tid_data[tid].is_tid_active = true; 81424afba76SLiad Kaufman mvmsta->tfd_queue_msk |= BIT(queue); 8159794c64fSLiad Kaufman queue_state = mvmsta->tid_data[tid].state; 81624afba76SLiad Kaufman 81724afba76SLiad Kaufman if (mvmsta->reserved_queue == queue) 81824afba76SLiad Kaufman mvmsta->reserved_queue = IEEE80211_INVAL_HW_QUEUE; 81924afba76SLiad Kaufman spin_unlock_bh(&mvmsta->lock); 82024afba76SLiad Kaufman 82142db09c1SLiad Kaufman if (!shared_queue) { 822cf961e16SLiad Kaufman ret = iwl_mvm_sta_send_to_fw(mvm, sta, true, STA_MODIFY_QUEUES); 823cf961e16SLiad Kaufman if (ret) 824cf961e16SLiad Kaufman goto out_err; 825cf961e16SLiad Kaufman 8269794c64fSLiad Kaufman /* If we need to re-enable aggregations... */ 82742db09c1SLiad Kaufman if (queue_state == IWL_AGG_ON) { 8289794c64fSLiad Kaufman ret = iwl_mvm_sta_tx_agg(mvm, sta, tid, queue, true); 82942db09c1SLiad Kaufman if (ret) 83042db09c1SLiad Kaufman goto out_err; 83142db09c1SLiad Kaufman } 83258f2cc57SLiad Kaufman } else { 83358f2cc57SLiad Kaufman /* Redirect queue, if needed */ 83458f2cc57SLiad Kaufman ret = iwl_mvm_scd_queue_redirect(mvm, queue, tid, ac, ssn, 83558f2cc57SLiad Kaufman wdg_timeout, false); 83658f2cc57SLiad Kaufman if (ret) 83758f2cc57SLiad Kaufman goto out_err; 83842db09c1SLiad Kaufman } 8399794c64fSLiad Kaufman 84042db09c1SLiad Kaufman return 0; 841cf961e16SLiad Kaufman 842cf961e16SLiad Kaufman out_err: 843cf961e16SLiad Kaufman iwl_mvm_disable_txq(mvm, queue, mac_queue, tid, 0); 844cf961e16SLiad Kaufman 845cf961e16SLiad Kaufman return ret; 84624afba76SLiad Kaufman } 84724afba76SLiad Kaufman 8489f9af3d7SLiad Kaufman static void iwl_mvm_unshare_queue(struct iwl_mvm *mvm, int queue) 8499f9af3d7SLiad Kaufman { 8509f9af3d7SLiad Kaufman struct ieee80211_sta *sta; 8519f9af3d7SLiad Kaufman struct iwl_mvm_sta *mvmsta; 8529f9af3d7SLiad Kaufman s8 sta_id; 8539f9af3d7SLiad Kaufman int tid = -1; 8549f9af3d7SLiad Kaufman unsigned long tid_bitmap; 8559f9af3d7SLiad Kaufman unsigned int wdg_timeout; 8569f9af3d7SLiad Kaufman int ssn; 8579f9af3d7SLiad Kaufman int ret = true; 8589f9af3d7SLiad Kaufman 8599f9af3d7SLiad Kaufman lockdep_assert_held(&mvm->mutex); 8609f9af3d7SLiad Kaufman 8619f9af3d7SLiad Kaufman spin_lock_bh(&mvm->queue_info_lock); 8629f9af3d7SLiad Kaufman sta_id = mvm->queue_info[queue].ra_sta_id; 8639f9af3d7SLiad Kaufman tid_bitmap = mvm->queue_info[queue].tid_bitmap; 8649f9af3d7SLiad Kaufman spin_unlock_bh(&mvm->queue_info_lock); 8659f9af3d7SLiad Kaufman 8669f9af3d7SLiad Kaufman /* Find TID for queue, and make sure it is the only one on the queue */ 8679f9af3d7SLiad Kaufman tid = find_first_bit(&tid_bitmap, IWL_MAX_TID_COUNT + 1); 8689f9af3d7SLiad Kaufman if (tid_bitmap != BIT(tid)) { 8699f9af3d7SLiad Kaufman IWL_ERR(mvm, "Failed to unshare q %d, active tids=0x%lx\n", 8709f9af3d7SLiad Kaufman queue, tid_bitmap); 8719f9af3d7SLiad Kaufman return; 8729f9af3d7SLiad Kaufman } 8739f9af3d7SLiad Kaufman 8749f9af3d7SLiad Kaufman IWL_DEBUG_TX_QUEUES(mvm, "Unsharing TXQ %d, keeping tid %d\n", queue, 8759f9af3d7SLiad Kaufman tid); 8769f9af3d7SLiad Kaufman 8779f9af3d7SLiad Kaufman sta = rcu_dereference_protected(mvm->fw_id_to_mac_id[sta_id], 8789f9af3d7SLiad Kaufman lockdep_is_held(&mvm->mutex)); 8799f9af3d7SLiad Kaufman 8809f9af3d7SLiad Kaufman if (WARN_ON_ONCE(IS_ERR_OR_NULL(sta))) 8819f9af3d7SLiad Kaufman return; 8829f9af3d7SLiad Kaufman 8839f9af3d7SLiad Kaufman mvmsta = iwl_mvm_sta_from_mac80211(sta); 8849f9af3d7SLiad Kaufman wdg_timeout = iwl_mvm_get_wd_timeout(mvm, mvmsta->vif, false, false); 8859f9af3d7SLiad Kaufman 8869f9af3d7SLiad Kaufman ssn = IEEE80211_SEQ_TO_SN(mvmsta->tid_data[tid].seq_number); 8879f9af3d7SLiad Kaufman 8889f9af3d7SLiad Kaufman ret = iwl_mvm_scd_queue_redirect(mvm, queue, tid, 8899f9af3d7SLiad Kaufman tid_to_mac80211_ac[tid], ssn, 8909f9af3d7SLiad Kaufman wdg_timeout, true); 8919f9af3d7SLiad Kaufman if (ret) { 8929f9af3d7SLiad Kaufman IWL_ERR(mvm, "Failed to redirect TXQ %d\n", queue); 8939f9af3d7SLiad Kaufman return; 8949f9af3d7SLiad Kaufman } 8959f9af3d7SLiad Kaufman 8969f9af3d7SLiad Kaufman /* If aggs should be turned back on - do it */ 8979f9af3d7SLiad Kaufman if (mvmsta->tid_data[tid].state == IWL_AGG_ON) { 8989f9af3d7SLiad Kaufman struct iwl_mvm_add_sta_cmd cmd; 8999f9af3d7SLiad Kaufman 9009f9af3d7SLiad Kaufman mvmsta->tid_disable_agg &= ~BIT(tid); 9019f9af3d7SLiad Kaufman 9029f9af3d7SLiad Kaufman cmd.mac_id_n_color = cpu_to_le32(mvmsta->mac_id_n_color); 9039f9af3d7SLiad Kaufman cmd.sta_id = mvmsta->sta_id; 9049f9af3d7SLiad Kaufman cmd.add_modify = STA_MODE_MODIFY; 9059f9af3d7SLiad Kaufman cmd.modify_mask = STA_MODIFY_TID_DISABLE_TX; 9069f9af3d7SLiad Kaufman cmd.tfd_queue_msk = cpu_to_le32(mvmsta->tfd_queue_msk); 9079f9af3d7SLiad Kaufman cmd.tid_disable_tx = cpu_to_le16(mvmsta->tid_disable_agg); 9089f9af3d7SLiad Kaufman 9099f9af3d7SLiad Kaufman ret = iwl_mvm_send_cmd_pdu(mvm, ADD_STA, CMD_ASYNC, 9109f9af3d7SLiad Kaufman iwl_mvm_add_sta_cmd_size(mvm), &cmd); 9119f9af3d7SLiad Kaufman if (!ret) { 9129f9af3d7SLiad Kaufman IWL_DEBUG_TX_QUEUES(mvm, 9139f9af3d7SLiad Kaufman "TXQ #%d is now aggregated again\n", 9149f9af3d7SLiad Kaufman queue); 9159f9af3d7SLiad Kaufman 9169f9af3d7SLiad Kaufman /* Mark queue intenally as aggregating again */ 9179f9af3d7SLiad Kaufman iwl_trans_txq_set_shared_mode(mvm->trans, queue, false); 9189f9af3d7SLiad Kaufman } 9199f9af3d7SLiad Kaufman } 9209f9af3d7SLiad Kaufman 9219f9af3d7SLiad Kaufman spin_lock_bh(&mvm->queue_info_lock); 9229f9af3d7SLiad Kaufman mvm->queue_info[queue].status = IWL_MVM_QUEUE_READY; 9239f9af3d7SLiad Kaufman spin_unlock_bh(&mvm->queue_info_lock); 9249f9af3d7SLiad Kaufman } 9259f9af3d7SLiad Kaufman 92624afba76SLiad Kaufman static inline u8 iwl_mvm_tid_to_ac_queue(int tid) 92724afba76SLiad Kaufman { 92824afba76SLiad Kaufman if (tid == IWL_MAX_TID_COUNT) 92924afba76SLiad Kaufman return IEEE80211_AC_VO; /* MGMT */ 93024afba76SLiad Kaufman 93124afba76SLiad Kaufman return tid_to_mac80211_ac[tid]; 93224afba76SLiad Kaufman } 93324afba76SLiad Kaufman 93424afba76SLiad Kaufman static void iwl_mvm_tx_deferred_stream(struct iwl_mvm *mvm, 93524afba76SLiad Kaufman struct ieee80211_sta *sta, int tid) 93624afba76SLiad Kaufman { 93724afba76SLiad Kaufman struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta); 93824afba76SLiad Kaufman struct iwl_mvm_tid_data *tid_data = &mvmsta->tid_data[tid]; 93924afba76SLiad Kaufman struct sk_buff *skb; 94024afba76SLiad Kaufman struct ieee80211_hdr *hdr; 94124afba76SLiad Kaufman struct sk_buff_head deferred_tx; 94224afba76SLiad Kaufman u8 mac_queue; 94324afba76SLiad Kaufman bool no_queue = false; /* Marks if there is a problem with the queue */ 94424afba76SLiad Kaufman u8 ac; 94524afba76SLiad Kaufman 94624afba76SLiad Kaufman lockdep_assert_held(&mvm->mutex); 94724afba76SLiad Kaufman 94824afba76SLiad Kaufman skb = skb_peek(&tid_data->deferred_tx_frames); 94924afba76SLiad Kaufman if (!skb) 95024afba76SLiad Kaufman return; 95124afba76SLiad Kaufman hdr = (void *)skb->data; 95224afba76SLiad Kaufman 95324afba76SLiad Kaufman ac = iwl_mvm_tid_to_ac_queue(tid); 95424afba76SLiad Kaufman mac_queue = IEEE80211_SKB_CB(skb)->hw_queue; 95524afba76SLiad Kaufman 95624afba76SLiad Kaufman if (tid_data->txq_id == IEEE80211_INVAL_HW_QUEUE && 95724afba76SLiad Kaufman iwl_mvm_sta_alloc_queue(mvm, sta, ac, tid, hdr)) { 95824afba76SLiad Kaufman IWL_ERR(mvm, 95924afba76SLiad Kaufman "Can't alloc TXQ for sta %d tid %d - dropping frame\n", 96024afba76SLiad Kaufman mvmsta->sta_id, tid); 96124afba76SLiad Kaufman 96224afba76SLiad Kaufman /* 96324afba76SLiad Kaufman * Mark queue as problematic so later the deferred traffic is 96424afba76SLiad Kaufman * freed, as we can do nothing with it 96524afba76SLiad Kaufman */ 96624afba76SLiad Kaufman no_queue = true; 96724afba76SLiad Kaufman } 96824afba76SLiad Kaufman 96924afba76SLiad Kaufman __skb_queue_head_init(&deferred_tx); 97024afba76SLiad Kaufman 971d2515a99SLiad Kaufman /* Disable bottom-halves when entering TX path */ 972d2515a99SLiad Kaufman local_bh_disable(); 97324afba76SLiad Kaufman spin_lock(&mvmsta->lock); 97424afba76SLiad Kaufman skb_queue_splice_init(&tid_data->deferred_tx_frames, &deferred_tx); 97524afba76SLiad Kaufman spin_unlock(&mvmsta->lock); 97624afba76SLiad Kaufman 97724afba76SLiad Kaufman while ((skb = __skb_dequeue(&deferred_tx))) 97824afba76SLiad Kaufman if (no_queue || iwl_mvm_tx_skb(mvm, skb, sta)) 97924afba76SLiad Kaufman ieee80211_free_txskb(mvm->hw, skb); 98024afba76SLiad Kaufman local_bh_enable(); 98124afba76SLiad Kaufman 98224afba76SLiad Kaufman /* Wake queue */ 98324afba76SLiad Kaufman iwl_mvm_start_mac_queues(mvm, BIT(mac_queue)); 98424afba76SLiad Kaufman } 98524afba76SLiad Kaufman 98624afba76SLiad Kaufman void iwl_mvm_add_new_dqa_stream_wk(struct work_struct *wk) 98724afba76SLiad Kaufman { 98824afba76SLiad Kaufman struct iwl_mvm *mvm = container_of(wk, struct iwl_mvm, 98924afba76SLiad Kaufman add_stream_wk); 99024afba76SLiad Kaufman struct ieee80211_sta *sta; 99124afba76SLiad Kaufman struct iwl_mvm_sta *mvmsta; 99224afba76SLiad Kaufman unsigned long deferred_tid_traffic; 9939f9af3d7SLiad Kaufman int queue, sta_id, tid; 99424afba76SLiad Kaufman 9959794c64fSLiad Kaufman /* Check inactivity of queues */ 9969794c64fSLiad Kaufman iwl_mvm_inactivity_check(mvm); 9979794c64fSLiad Kaufman 99824afba76SLiad Kaufman mutex_lock(&mvm->mutex); 99924afba76SLiad Kaufman 10009f9af3d7SLiad Kaufman /* Reconfigure queues requiring reconfiguation */ 10019f9af3d7SLiad Kaufman for (queue = 0; queue < IWL_MAX_HW_QUEUES; queue++) { 10029f9af3d7SLiad Kaufman bool reconfig; 10039f9af3d7SLiad Kaufman 10049f9af3d7SLiad Kaufman spin_lock_bh(&mvm->queue_info_lock); 10059f9af3d7SLiad Kaufman reconfig = (mvm->queue_info[queue].status == 10069f9af3d7SLiad Kaufman IWL_MVM_QUEUE_RECONFIGURING); 10079f9af3d7SLiad Kaufman spin_unlock_bh(&mvm->queue_info_lock); 10089f9af3d7SLiad Kaufman 10099f9af3d7SLiad Kaufman if (reconfig) 10109f9af3d7SLiad Kaufman iwl_mvm_unshare_queue(mvm, queue); 10119f9af3d7SLiad Kaufman } 10129f9af3d7SLiad Kaufman 101324afba76SLiad Kaufman /* Go over all stations with deferred traffic */ 101424afba76SLiad Kaufman for_each_set_bit(sta_id, mvm->sta_deferred_frames, 101524afba76SLiad Kaufman IWL_MVM_STATION_COUNT) { 101624afba76SLiad Kaufman clear_bit(sta_id, mvm->sta_deferred_frames); 101724afba76SLiad Kaufman sta = rcu_dereference_protected(mvm->fw_id_to_mac_id[sta_id], 101824afba76SLiad Kaufman lockdep_is_held(&mvm->mutex)); 101924afba76SLiad Kaufman if (IS_ERR_OR_NULL(sta)) 102024afba76SLiad Kaufman continue; 102124afba76SLiad Kaufman 102224afba76SLiad Kaufman mvmsta = iwl_mvm_sta_from_mac80211(sta); 102324afba76SLiad Kaufman deferred_tid_traffic = mvmsta->deferred_traffic_tid_map; 102424afba76SLiad Kaufman 102524afba76SLiad Kaufman for_each_set_bit(tid, &deferred_tid_traffic, 102624afba76SLiad Kaufman IWL_MAX_TID_COUNT + 1) 102724afba76SLiad Kaufman iwl_mvm_tx_deferred_stream(mvm, sta, tid); 102824afba76SLiad Kaufman } 102924afba76SLiad Kaufman 103024afba76SLiad Kaufman mutex_unlock(&mvm->mutex); 103124afba76SLiad Kaufman } 103224afba76SLiad Kaufman 103324afba76SLiad Kaufman static int iwl_mvm_reserve_sta_stream(struct iwl_mvm *mvm, 1034d5216a28SLiad Kaufman struct ieee80211_sta *sta, 1035d5216a28SLiad Kaufman enum nl80211_iftype vif_type) 103624afba76SLiad Kaufman { 103724afba76SLiad Kaufman struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta); 103824afba76SLiad Kaufman int queue; 103924afba76SLiad Kaufman 10409794c64fSLiad Kaufman /* 10419794c64fSLiad Kaufman * Check for inactive queues, so we don't reach a situation where we 10429794c64fSLiad Kaufman * can't add a STA due to a shortage in queues that doesn't really exist 10439794c64fSLiad Kaufman */ 10449794c64fSLiad Kaufman iwl_mvm_inactivity_check(mvm); 10459794c64fSLiad Kaufman 104624afba76SLiad Kaufman spin_lock_bh(&mvm->queue_info_lock); 104724afba76SLiad Kaufman 104824afba76SLiad Kaufman /* Make sure we have free resources for this STA */ 1049d5216a28SLiad Kaufman if (vif_type == NL80211_IFTYPE_STATION && !sta->tdls && 1050d5216a28SLiad Kaufman !mvm->queue_info[IWL_MVM_DQA_BSS_CLIENT_QUEUE].hw_queue_refcount && 1051cf961e16SLiad Kaufman (mvm->queue_info[IWL_MVM_DQA_BSS_CLIENT_QUEUE].status == 1052cf961e16SLiad Kaufman IWL_MVM_QUEUE_FREE)) 1053d5216a28SLiad Kaufman queue = IWL_MVM_DQA_BSS_CLIENT_QUEUE; 1054d5216a28SLiad Kaufman else 10559794c64fSLiad Kaufman queue = iwl_mvm_find_free_queue(mvm, mvmsta->sta_id, 10569794c64fSLiad Kaufman IWL_MVM_DQA_MIN_DATA_QUEUE, 105724afba76SLiad Kaufman IWL_MVM_DQA_MAX_DATA_QUEUE); 105824afba76SLiad Kaufman if (queue < 0) { 105924afba76SLiad Kaufman spin_unlock_bh(&mvm->queue_info_lock); 106024afba76SLiad Kaufman IWL_ERR(mvm, "No available queues for new station\n"); 106124afba76SLiad Kaufman return -ENOSPC; 106224afba76SLiad Kaufman } 1063cf961e16SLiad Kaufman mvm->queue_info[queue].status = IWL_MVM_QUEUE_RESERVED; 106424afba76SLiad Kaufman 106524afba76SLiad Kaufman spin_unlock_bh(&mvm->queue_info_lock); 106624afba76SLiad Kaufman 106724afba76SLiad Kaufman mvmsta->reserved_queue = queue; 106824afba76SLiad Kaufman 106924afba76SLiad Kaufman IWL_DEBUG_TX_QUEUES(mvm, "Reserving data queue #%d for sta_id %d\n", 107024afba76SLiad Kaufman queue, mvmsta->sta_id); 107124afba76SLiad Kaufman 107224afba76SLiad Kaufman return 0; 107324afba76SLiad Kaufman } 107424afba76SLiad Kaufman 1075e705c121SKalle Valo int iwl_mvm_add_sta(struct iwl_mvm *mvm, 1076e705c121SKalle Valo struct ieee80211_vif *vif, 1077e705c121SKalle Valo struct ieee80211_sta *sta) 1078e705c121SKalle Valo { 1079e705c121SKalle Valo struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 1080e705c121SKalle Valo struct iwl_mvm_sta *mvm_sta = iwl_mvm_sta_from_mac80211(sta); 1081a571f5f6SSara Sharon struct iwl_mvm_rxq_dup_data *dup_data; 1082e705c121SKalle Valo int i, ret, sta_id; 1083e705c121SKalle Valo 1084e705c121SKalle Valo lockdep_assert_held(&mvm->mutex); 1085e705c121SKalle Valo 1086e705c121SKalle Valo if (!test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status)) 1087e705c121SKalle Valo sta_id = iwl_mvm_find_free_sta_id(mvm, 1088e705c121SKalle Valo ieee80211_vif_type_p2p(vif)); 1089e705c121SKalle Valo else 1090e705c121SKalle Valo sta_id = mvm_sta->sta_id; 1091e705c121SKalle Valo 1092e705c121SKalle Valo if (sta_id == IWL_MVM_STATION_COUNT) 1093e705c121SKalle Valo return -ENOSPC; 1094e705c121SKalle Valo 1095e705c121SKalle Valo spin_lock_init(&mvm_sta->lock); 1096e705c121SKalle Valo 1097e705c121SKalle Valo mvm_sta->sta_id = sta_id; 1098e705c121SKalle Valo mvm_sta->mac_id_n_color = FW_CMD_ID_AND_COLOR(mvmvif->id, 1099e705c121SKalle Valo mvmvif->color); 1100e705c121SKalle Valo mvm_sta->vif = vif; 1101e705c121SKalle Valo mvm_sta->max_agg_bufsize = LINK_QUAL_AGG_FRAME_LIMIT_DEF; 1102e705c121SKalle Valo mvm_sta->tx_protection = 0; 1103e705c121SKalle Valo mvm_sta->tt_tx_protection = false; 1104e705c121SKalle Valo 1105e705c121SKalle Valo /* HW restart, don't assume the memory has been zeroed */ 1106e705c121SKalle Valo atomic_set(&mvm->pending_frames[sta_id], 0); 1107e705c121SKalle Valo mvm_sta->tid_disable_agg = 0xffff; /* No aggs at first */ 1108e705c121SKalle Valo mvm_sta->tfd_queue_msk = 0; 1109e705c121SKalle Valo 1110e3118ad7SLiad Kaufman /* 1111e3118ad7SLiad Kaufman * Allocate new queues for a TDLS station, unless we're in DQA mode, 1112e3118ad7SLiad Kaufman * and then they'll be allocated dynamically 1113e3118ad7SLiad Kaufman */ 1114e3118ad7SLiad Kaufman if (!iwl_mvm_is_dqa_supported(mvm) && sta->tdls) { 1115e705c121SKalle Valo ret = iwl_mvm_tdls_sta_init(mvm, sta); 1116e705c121SKalle Valo if (ret) 1117e705c121SKalle Valo return ret; 111824afba76SLiad Kaufman } else if (!iwl_mvm_is_dqa_supported(mvm)) { 1119e705c121SKalle Valo for (i = 0; i < IEEE80211_NUM_ACS; i++) 1120e705c121SKalle Valo if (vif->hw_queue[i] != IEEE80211_INVAL_HW_QUEUE) 1121e705c121SKalle Valo mvm_sta->tfd_queue_msk |= BIT(vif->hw_queue[i]); 1122e705c121SKalle Valo } 1123e705c121SKalle Valo 1124e705c121SKalle Valo /* for HW restart - reset everything but the sequence number */ 112524afba76SLiad Kaufman for (i = 0; i <= IWL_MAX_TID_COUNT; i++) { 1126e705c121SKalle Valo u16 seq = mvm_sta->tid_data[i].seq_number; 1127e705c121SKalle Valo memset(&mvm_sta->tid_data[i], 0, sizeof(mvm_sta->tid_data[i])); 1128e705c121SKalle Valo mvm_sta->tid_data[i].seq_number = seq; 112924afba76SLiad Kaufman 113024afba76SLiad Kaufman if (!iwl_mvm_is_dqa_supported(mvm)) 113124afba76SLiad Kaufman continue; 113224afba76SLiad Kaufman 113324afba76SLiad Kaufman /* 113424afba76SLiad Kaufman * Mark all queues for this STA as unallocated and defer TX 113524afba76SLiad Kaufman * frames until the queue is allocated 113624afba76SLiad Kaufman */ 113724afba76SLiad Kaufman mvm_sta->tid_data[i].txq_id = IEEE80211_INVAL_HW_QUEUE; 113824afba76SLiad Kaufman skb_queue_head_init(&mvm_sta->tid_data[i].deferred_tx_frames); 1139e705c121SKalle Valo } 114024afba76SLiad Kaufman mvm_sta->deferred_traffic_tid_map = 0; 1141e705c121SKalle Valo mvm_sta->agg_tids = 0; 1142e705c121SKalle Valo 1143a571f5f6SSara Sharon if (iwl_mvm_has_new_rx_api(mvm) && 1144a571f5f6SSara Sharon !test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status)) { 1145a571f5f6SSara Sharon dup_data = kcalloc(mvm->trans->num_rx_queues, 1146a571f5f6SSara Sharon sizeof(*dup_data), 1147a571f5f6SSara Sharon GFP_KERNEL); 1148a571f5f6SSara Sharon if (!dup_data) 1149a571f5f6SSara Sharon return -ENOMEM; 1150a571f5f6SSara Sharon mvm_sta->dup_data = dup_data; 1151a571f5f6SSara Sharon } 1152a571f5f6SSara Sharon 115324afba76SLiad Kaufman if (iwl_mvm_is_dqa_supported(mvm)) { 1154d5216a28SLiad Kaufman ret = iwl_mvm_reserve_sta_stream(mvm, sta, 1155d5216a28SLiad Kaufman ieee80211_vif_type_p2p(vif)); 115624afba76SLiad Kaufman if (ret) 115724afba76SLiad Kaufman goto err; 115824afba76SLiad Kaufman } 115924afba76SLiad Kaufman 116024afba76SLiad Kaufman ret = iwl_mvm_sta_send_to_fw(mvm, sta, false, 0); 1161e705c121SKalle Valo if (ret) 1162e705c121SKalle Valo goto err; 1163e705c121SKalle Valo 1164e705c121SKalle Valo if (vif->type == NL80211_IFTYPE_STATION) { 1165e705c121SKalle Valo if (!sta->tdls) { 1166e705c121SKalle Valo WARN_ON(mvmvif->ap_sta_id != IWL_MVM_STATION_COUNT); 1167e705c121SKalle Valo mvmvif->ap_sta_id = sta_id; 1168e705c121SKalle Valo } else { 1169e705c121SKalle Valo WARN_ON(mvmvif->ap_sta_id == IWL_MVM_STATION_COUNT); 1170e705c121SKalle Valo } 1171e705c121SKalle Valo } 1172e705c121SKalle Valo 1173e705c121SKalle Valo rcu_assign_pointer(mvm->fw_id_to_mac_id[sta_id], sta); 1174e705c121SKalle Valo 1175e705c121SKalle Valo return 0; 1176e705c121SKalle Valo 1177e705c121SKalle Valo err: 1178e3118ad7SLiad Kaufman if (!iwl_mvm_is_dqa_supported(mvm) && sta->tdls) 1179e705c121SKalle Valo iwl_mvm_tdls_sta_deinit(mvm, sta); 1180e705c121SKalle Valo return ret; 1181e705c121SKalle Valo } 1182e705c121SKalle Valo 1183e705c121SKalle Valo int iwl_mvm_update_sta(struct iwl_mvm *mvm, 1184e705c121SKalle Valo struct ieee80211_vif *vif, 1185e705c121SKalle Valo struct ieee80211_sta *sta) 1186e705c121SKalle Valo { 118724afba76SLiad Kaufman return iwl_mvm_sta_send_to_fw(mvm, sta, true, 0); 1188e705c121SKalle Valo } 1189e705c121SKalle Valo 1190e705c121SKalle Valo int iwl_mvm_drain_sta(struct iwl_mvm *mvm, struct iwl_mvm_sta *mvmsta, 1191e705c121SKalle Valo bool drain) 1192e705c121SKalle Valo { 1193e705c121SKalle Valo struct iwl_mvm_add_sta_cmd cmd = {}; 1194e705c121SKalle Valo int ret; 1195e705c121SKalle Valo u32 status; 1196e705c121SKalle Valo 1197e705c121SKalle Valo lockdep_assert_held(&mvm->mutex); 1198e705c121SKalle Valo 1199e705c121SKalle Valo cmd.mac_id_n_color = cpu_to_le32(mvmsta->mac_id_n_color); 1200e705c121SKalle Valo cmd.sta_id = mvmsta->sta_id; 1201e705c121SKalle Valo cmd.add_modify = STA_MODE_MODIFY; 1202e705c121SKalle Valo cmd.station_flags = drain ? cpu_to_le32(STA_FLG_DRAIN_FLOW) : 0; 1203e705c121SKalle Valo cmd.station_flags_msk = cpu_to_le32(STA_FLG_DRAIN_FLOW); 1204e705c121SKalle Valo 1205e705c121SKalle Valo status = ADD_STA_SUCCESS; 1206854c5705SSara Sharon ret = iwl_mvm_send_cmd_pdu_status(mvm, ADD_STA, 1207854c5705SSara Sharon iwl_mvm_add_sta_cmd_size(mvm), 1208e705c121SKalle Valo &cmd, &status); 1209e705c121SKalle Valo if (ret) 1210e705c121SKalle Valo return ret; 1211e705c121SKalle Valo 1212837c4da9SSara Sharon switch (status & IWL_ADD_STA_STATUS_MASK) { 1213e705c121SKalle Valo case ADD_STA_SUCCESS: 1214e705c121SKalle Valo IWL_DEBUG_INFO(mvm, "Frames for staid %d will drained in fw\n", 1215e705c121SKalle Valo mvmsta->sta_id); 1216e705c121SKalle Valo break; 1217e705c121SKalle Valo default: 1218e705c121SKalle Valo ret = -EIO; 1219e705c121SKalle Valo IWL_ERR(mvm, "Couldn't drain frames for staid %d\n", 1220e705c121SKalle Valo mvmsta->sta_id); 1221e705c121SKalle Valo break; 1222e705c121SKalle Valo } 1223e705c121SKalle Valo 1224e705c121SKalle Valo return ret; 1225e705c121SKalle Valo } 1226e705c121SKalle Valo 1227e705c121SKalle Valo /* 1228e705c121SKalle Valo * Remove a station from the FW table. Before sending the command to remove 1229e705c121SKalle Valo * the station validate that the station is indeed known to the driver (sanity 1230e705c121SKalle Valo * only). 1231e705c121SKalle Valo */ 1232e705c121SKalle Valo static int iwl_mvm_rm_sta_common(struct iwl_mvm *mvm, u8 sta_id) 1233e705c121SKalle Valo { 1234e705c121SKalle Valo struct ieee80211_sta *sta; 1235e705c121SKalle Valo struct iwl_mvm_rm_sta_cmd rm_sta_cmd = { 1236e705c121SKalle Valo .sta_id = sta_id, 1237e705c121SKalle Valo }; 1238e705c121SKalle Valo int ret; 1239e705c121SKalle Valo 1240e705c121SKalle Valo sta = rcu_dereference_protected(mvm->fw_id_to_mac_id[sta_id], 1241e705c121SKalle Valo lockdep_is_held(&mvm->mutex)); 1242e705c121SKalle Valo 1243e705c121SKalle Valo /* Note: internal stations are marked as error values */ 1244e705c121SKalle Valo if (!sta) { 1245e705c121SKalle Valo IWL_ERR(mvm, "Invalid station id\n"); 1246e705c121SKalle Valo return -EINVAL; 1247e705c121SKalle Valo } 1248e705c121SKalle Valo 1249e705c121SKalle Valo ret = iwl_mvm_send_cmd_pdu(mvm, REMOVE_STA, 0, 1250e705c121SKalle Valo sizeof(rm_sta_cmd), &rm_sta_cmd); 1251e705c121SKalle Valo if (ret) { 1252e705c121SKalle Valo IWL_ERR(mvm, "Failed to remove station. Id=%d\n", sta_id); 1253e705c121SKalle Valo return ret; 1254e705c121SKalle Valo } 1255e705c121SKalle Valo 1256e705c121SKalle Valo return 0; 1257e705c121SKalle Valo } 1258e705c121SKalle Valo 1259e705c121SKalle Valo void iwl_mvm_sta_drained_wk(struct work_struct *wk) 1260e705c121SKalle Valo { 1261e705c121SKalle Valo struct iwl_mvm *mvm = container_of(wk, struct iwl_mvm, sta_drained_wk); 1262e705c121SKalle Valo u8 sta_id; 1263e705c121SKalle Valo 1264e705c121SKalle Valo /* 1265e705c121SKalle Valo * The mutex is needed because of the SYNC cmd, but not only: if the 1266e705c121SKalle Valo * work would run concurrently with iwl_mvm_rm_sta, it would run before 1267e705c121SKalle Valo * iwl_mvm_rm_sta sets the station as busy, and exit. Then 1268e705c121SKalle Valo * iwl_mvm_rm_sta would set the station as busy, and nobody will clean 1269e705c121SKalle Valo * that later. 1270e705c121SKalle Valo */ 1271e705c121SKalle Valo mutex_lock(&mvm->mutex); 1272e705c121SKalle Valo 1273e705c121SKalle Valo for_each_set_bit(sta_id, mvm->sta_drained, IWL_MVM_STATION_COUNT) { 1274e705c121SKalle Valo int ret; 1275e705c121SKalle Valo struct ieee80211_sta *sta = 1276e705c121SKalle Valo rcu_dereference_protected(mvm->fw_id_to_mac_id[sta_id], 1277e705c121SKalle Valo lockdep_is_held(&mvm->mutex)); 1278e705c121SKalle Valo 1279e705c121SKalle Valo /* 1280e705c121SKalle Valo * This station is in use or RCU-removed; the latter happens in 1281e705c121SKalle Valo * managed mode, where mac80211 removes the station before we 1282e705c121SKalle Valo * can remove it from firmware (we can only do that after the 1283e705c121SKalle Valo * MAC is marked unassociated), and possibly while the deauth 1284e705c121SKalle Valo * frame to disconnect from the AP is still queued. Then, the 1285e705c121SKalle Valo * station pointer is -ENOENT when the last skb is reclaimed. 1286e705c121SKalle Valo */ 1287e705c121SKalle Valo if (!IS_ERR(sta) || PTR_ERR(sta) == -ENOENT) 1288e705c121SKalle Valo continue; 1289e705c121SKalle Valo 1290e705c121SKalle Valo if (PTR_ERR(sta) == -EINVAL) { 1291e705c121SKalle Valo IWL_ERR(mvm, "Drained sta %d, but it is internal?\n", 1292e705c121SKalle Valo sta_id); 1293e705c121SKalle Valo continue; 1294e705c121SKalle Valo } 1295e705c121SKalle Valo 1296e705c121SKalle Valo if (!sta) { 1297e705c121SKalle Valo IWL_ERR(mvm, "Drained sta %d, but it was NULL?\n", 1298e705c121SKalle Valo sta_id); 1299e705c121SKalle Valo continue; 1300e705c121SKalle Valo } 1301e705c121SKalle Valo 1302e705c121SKalle Valo WARN_ON(PTR_ERR(sta) != -EBUSY); 1303e705c121SKalle Valo /* This station was removed and we waited until it got drained, 1304e705c121SKalle Valo * we can now proceed and remove it. 1305e705c121SKalle Valo */ 1306e705c121SKalle Valo ret = iwl_mvm_rm_sta_common(mvm, sta_id); 1307e705c121SKalle Valo if (ret) { 1308e705c121SKalle Valo IWL_ERR(mvm, 1309e705c121SKalle Valo "Couldn't remove sta %d after it was drained\n", 1310e705c121SKalle Valo sta_id); 1311e705c121SKalle Valo continue; 1312e705c121SKalle Valo } 1313e705c121SKalle Valo RCU_INIT_POINTER(mvm->fw_id_to_mac_id[sta_id], NULL); 1314e705c121SKalle Valo clear_bit(sta_id, mvm->sta_drained); 1315e705c121SKalle Valo 1316e705c121SKalle Valo if (mvm->tfd_drained[sta_id]) { 1317e705c121SKalle Valo unsigned long i, msk = mvm->tfd_drained[sta_id]; 1318e705c121SKalle Valo 1319e705c121SKalle Valo for_each_set_bit(i, &msk, sizeof(msk) * BITS_PER_BYTE) 1320e705c121SKalle Valo iwl_mvm_disable_txq(mvm, i, i, 1321e705c121SKalle Valo IWL_MAX_TID_COUNT, 0); 1322e705c121SKalle Valo 1323e705c121SKalle Valo mvm->tfd_drained[sta_id] = 0; 1324e705c121SKalle Valo IWL_DEBUG_TDLS(mvm, "Drained sta %d, with queues %ld\n", 1325e705c121SKalle Valo sta_id, msk); 1326e705c121SKalle Valo } 1327e705c121SKalle Valo } 1328e705c121SKalle Valo 1329e705c121SKalle Valo mutex_unlock(&mvm->mutex); 1330e705c121SKalle Valo } 1331e705c121SKalle Valo 133224afba76SLiad Kaufman static void iwl_mvm_disable_sta_queues(struct iwl_mvm *mvm, 133324afba76SLiad Kaufman struct ieee80211_vif *vif, 133424afba76SLiad Kaufman struct iwl_mvm_sta *mvm_sta) 133524afba76SLiad Kaufman { 133624afba76SLiad Kaufman int ac; 133724afba76SLiad Kaufman int i; 133824afba76SLiad Kaufman 133924afba76SLiad Kaufman lockdep_assert_held(&mvm->mutex); 134024afba76SLiad Kaufman 134124afba76SLiad Kaufman for (i = 0; i < ARRAY_SIZE(mvm_sta->tid_data); i++) { 134224afba76SLiad Kaufman if (mvm_sta->tid_data[i].txq_id == IEEE80211_INVAL_HW_QUEUE) 134324afba76SLiad Kaufman continue; 134424afba76SLiad Kaufman 134524afba76SLiad Kaufman ac = iwl_mvm_tid_to_ac_queue(i); 134624afba76SLiad Kaufman iwl_mvm_disable_txq(mvm, mvm_sta->tid_data[i].txq_id, 134724afba76SLiad Kaufman vif->hw_queue[ac], i, 0); 134824afba76SLiad Kaufman mvm_sta->tid_data[i].txq_id = IEEE80211_INVAL_HW_QUEUE; 134924afba76SLiad Kaufman } 135024afba76SLiad Kaufman } 135124afba76SLiad Kaufman 1352e705c121SKalle Valo int iwl_mvm_rm_sta(struct iwl_mvm *mvm, 1353e705c121SKalle Valo struct ieee80211_vif *vif, 1354e705c121SKalle Valo struct ieee80211_sta *sta) 1355e705c121SKalle Valo { 1356e705c121SKalle Valo struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 1357e705c121SKalle Valo struct iwl_mvm_sta *mvm_sta = iwl_mvm_sta_from_mac80211(sta); 1358e705c121SKalle Valo int ret; 1359e705c121SKalle Valo 1360e705c121SKalle Valo lockdep_assert_held(&mvm->mutex); 1361e705c121SKalle Valo 1362a571f5f6SSara Sharon if (iwl_mvm_has_new_rx_api(mvm)) 1363a571f5f6SSara Sharon kfree(mvm_sta->dup_data); 1364a571f5f6SSara Sharon 1365a6f035a0SLiad Kaufman if ((vif->type == NL80211_IFTYPE_STATION && 1366a6f035a0SLiad Kaufman mvmvif->ap_sta_id == mvm_sta->sta_id) || 1367a6f035a0SLiad Kaufman iwl_mvm_is_dqa_supported(mvm)){ 1368e705c121SKalle Valo ret = iwl_mvm_drain_sta(mvm, mvm_sta, true); 1369e705c121SKalle Valo if (ret) 1370e705c121SKalle Valo return ret; 1371e705c121SKalle Valo /* flush its queues here since we are freeing mvm_sta */ 1372e705c121SKalle Valo ret = iwl_mvm_flush_tx_path(mvm, mvm_sta->tfd_queue_msk, 0); 1373e705c121SKalle Valo if (ret) 1374e705c121SKalle Valo return ret; 1375e705c121SKalle Valo ret = iwl_trans_wait_tx_queue_empty(mvm->trans, 1376e705c121SKalle Valo mvm_sta->tfd_queue_msk); 1377e705c121SKalle Valo if (ret) 1378e705c121SKalle Valo return ret; 1379e705c121SKalle Valo ret = iwl_mvm_drain_sta(mvm, mvm_sta, false); 1380e705c121SKalle Valo 138124afba76SLiad Kaufman /* If DQA is supported - the queues can be disabled now */ 138224afba76SLiad Kaufman if (iwl_mvm_is_dqa_supported(mvm)) 138324afba76SLiad Kaufman iwl_mvm_disable_sta_queues(mvm, vif, mvm_sta); 138424afba76SLiad Kaufman 1385e3118ad7SLiad Kaufman if (vif->type == NL80211_IFTYPE_STATION && 1386e3118ad7SLiad Kaufman mvmvif->ap_sta_id == mvm_sta->sta_id) { 1387e3118ad7SLiad Kaufman /* if associated - we can't remove the AP STA now */ 1388e705c121SKalle Valo if (vif->bss_conf.assoc) 1389e705c121SKalle Valo return ret; 1390e705c121SKalle Valo 1391e705c121SKalle Valo /* unassoc - go ahead - remove the AP STA now */ 1392e705c121SKalle Valo mvmvif->ap_sta_id = IWL_MVM_STATION_COUNT; 1393e705c121SKalle Valo 1394e705c121SKalle Valo /* clear d0i3_ap_sta_id if no longer relevant */ 1395e705c121SKalle Valo if (mvm->d0i3_ap_sta_id == mvm_sta->sta_id) 1396e705c121SKalle Valo mvm->d0i3_ap_sta_id = IWL_MVM_STATION_COUNT; 1397e705c121SKalle Valo } 1398e3118ad7SLiad Kaufman } 1399e705c121SKalle Valo 1400e705c121SKalle Valo /* 1401e705c121SKalle Valo * This shouldn't happen - the TDLS channel switch should be canceled 1402e705c121SKalle Valo * before the STA is removed. 1403e705c121SKalle Valo */ 1404e705c121SKalle Valo if (WARN_ON_ONCE(mvm->tdls_cs.peer.sta_id == mvm_sta->sta_id)) { 1405e705c121SKalle Valo mvm->tdls_cs.peer.sta_id = IWL_MVM_STATION_COUNT; 1406e705c121SKalle Valo cancel_delayed_work(&mvm->tdls_cs.dwork); 1407e705c121SKalle Valo } 1408e705c121SKalle Valo 1409e705c121SKalle Valo /* 1410e705c121SKalle Valo * Make sure that the tx response code sees the station as -EBUSY and 1411e705c121SKalle Valo * calls the drain worker. 1412e705c121SKalle Valo */ 1413e705c121SKalle Valo spin_lock_bh(&mvm_sta->lock); 1414e705c121SKalle Valo /* 1415e705c121SKalle Valo * There are frames pending on the AC queues for this station. 1416e705c121SKalle Valo * We need to wait until all the frames are drained... 1417e705c121SKalle Valo */ 1418e705c121SKalle Valo if (atomic_read(&mvm->pending_frames[mvm_sta->sta_id])) { 1419e705c121SKalle Valo rcu_assign_pointer(mvm->fw_id_to_mac_id[mvm_sta->sta_id], 1420e705c121SKalle Valo ERR_PTR(-EBUSY)); 1421e705c121SKalle Valo spin_unlock_bh(&mvm_sta->lock); 1422e705c121SKalle Valo 1423e705c121SKalle Valo /* disable TDLS sta queues on drain complete */ 1424e705c121SKalle Valo if (sta->tdls) { 1425e705c121SKalle Valo mvm->tfd_drained[mvm_sta->sta_id] = 1426e705c121SKalle Valo mvm_sta->tfd_queue_msk; 1427e705c121SKalle Valo IWL_DEBUG_TDLS(mvm, "Draining TDLS sta %d\n", 1428e705c121SKalle Valo mvm_sta->sta_id); 1429e705c121SKalle Valo } 1430e705c121SKalle Valo 1431e705c121SKalle Valo ret = iwl_mvm_drain_sta(mvm, mvm_sta, true); 1432e705c121SKalle Valo } else { 1433e705c121SKalle Valo spin_unlock_bh(&mvm_sta->lock); 1434e705c121SKalle Valo 1435e3118ad7SLiad Kaufman if (!iwl_mvm_is_dqa_supported(mvm) && sta->tdls) 1436e705c121SKalle Valo iwl_mvm_tdls_sta_deinit(mvm, sta); 1437e705c121SKalle Valo 1438e705c121SKalle Valo ret = iwl_mvm_rm_sta_common(mvm, mvm_sta->sta_id); 1439e705c121SKalle Valo RCU_INIT_POINTER(mvm->fw_id_to_mac_id[mvm_sta->sta_id], NULL); 1440e705c121SKalle Valo } 1441e705c121SKalle Valo 1442e705c121SKalle Valo return ret; 1443e705c121SKalle Valo } 1444e705c121SKalle Valo 1445e705c121SKalle Valo int iwl_mvm_rm_sta_id(struct iwl_mvm *mvm, 1446e705c121SKalle Valo struct ieee80211_vif *vif, 1447e705c121SKalle Valo u8 sta_id) 1448e705c121SKalle Valo { 1449e705c121SKalle Valo int ret = iwl_mvm_rm_sta_common(mvm, sta_id); 1450e705c121SKalle Valo 1451e705c121SKalle Valo lockdep_assert_held(&mvm->mutex); 1452e705c121SKalle Valo 1453e705c121SKalle Valo RCU_INIT_POINTER(mvm->fw_id_to_mac_id[sta_id], NULL); 1454e705c121SKalle Valo return ret; 1455e705c121SKalle Valo } 1456e705c121SKalle Valo 14570e39eb03SChaya Rachel Ivgi int iwl_mvm_allocate_int_sta(struct iwl_mvm *mvm, 1458e705c121SKalle Valo struct iwl_mvm_int_sta *sta, 1459e705c121SKalle Valo u32 qmask, enum nl80211_iftype iftype) 1460e705c121SKalle Valo { 1461e705c121SKalle Valo if (!test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status)) { 1462e705c121SKalle Valo sta->sta_id = iwl_mvm_find_free_sta_id(mvm, iftype); 1463e705c121SKalle Valo if (WARN_ON_ONCE(sta->sta_id == IWL_MVM_STATION_COUNT)) 1464e705c121SKalle Valo return -ENOSPC; 1465e705c121SKalle Valo } 1466e705c121SKalle Valo 1467e705c121SKalle Valo sta->tfd_queue_msk = qmask; 1468e705c121SKalle Valo 1469e705c121SKalle Valo /* put a non-NULL value so iterating over the stations won't stop */ 1470e705c121SKalle Valo rcu_assign_pointer(mvm->fw_id_to_mac_id[sta->sta_id], ERR_PTR(-EINVAL)); 1471e705c121SKalle Valo return 0; 1472e705c121SKalle Valo } 1473e705c121SKalle Valo 1474e705c121SKalle Valo static void iwl_mvm_dealloc_int_sta(struct iwl_mvm *mvm, 1475e705c121SKalle Valo struct iwl_mvm_int_sta *sta) 1476e705c121SKalle Valo { 1477e705c121SKalle Valo RCU_INIT_POINTER(mvm->fw_id_to_mac_id[sta->sta_id], NULL); 1478e705c121SKalle Valo memset(sta, 0, sizeof(struct iwl_mvm_int_sta)); 1479e705c121SKalle Valo sta->sta_id = IWL_MVM_STATION_COUNT; 1480e705c121SKalle Valo } 1481e705c121SKalle Valo 1482e705c121SKalle Valo static int iwl_mvm_add_int_sta_common(struct iwl_mvm *mvm, 1483e705c121SKalle Valo struct iwl_mvm_int_sta *sta, 1484e705c121SKalle Valo const u8 *addr, 1485e705c121SKalle Valo u16 mac_id, u16 color) 1486e705c121SKalle Valo { 1487e705c121SKalle Valo struct iwl_mvm_add_sta_cmd cmd; 1488e705c121SKalle Valo int ret; 1489e705c121SKalle Valo u32 status; 1490e705c121SKalle Valo 1491e705c121SKalle Valo lockdep_assert_held(&mvm->mutex); 1492e705c121SKalle Valo 1493e705c121SKalle Valo memset(&cmd, 0, sizeof(cmd)); 1494e705c121SKalle Valo cmd.sta_id = sta->sta_id; 1495e705c121SKalle Valo cmd.mac_id_n_color = cpu_to_le32(FW_CMD_ID_AND_COLOR(mac_id, 1496e705c121SKalle Valo color)); 1497e705c121SKalle Valo 1498e705c121SKalle Valo cmd.tfd_queue_msk = cpu_to_le32(sta->tfd_queue_msk); 1499cf0cda19SLiad Kaufman cmd.tid_disable_tx = cpu_to_le16(0xffff); 1500e705c121SKalle Valo 1501e705c121SKalle Valo if (addr) 1502e705c121SKalle Valo memcpy(cmd.addr, addr, ETH_ALEN); 1503e705c121SKalle Valo 1504854c5705SSara Sharon ret = iwl_mvm_send_cmd_pdu_status(mvm, ADD_STA, 1505854c5705SSara Sharon iwl_mvm_add_sta_cmd_size(mvm), 1506e705c121SKalle Valo &cmd, &status); 1507e705c121SKalle Valo if (ret) 1508e705c121SKalle Valo return ret; 1509e705c121SKalle Valo 1510837c4da9SSara Sharon switch (status & IWL_ADD_STA_STATUS_MASK) { 1511e705c121SKalle Valo case ADD_STA_SUCCESS: 1512e705c121SKalle Valo IWL_DEBUG_INFO(mvm, "Internal station added.\n"); 1513e705c121SKalle Valo return 0; 1514e705c121SKalle Valo default: 1515e705c121SKalle Valo ret = -EIO; 1516e705c121SKalle Valo IWL_ERR(mvm, "Add internal station failed, status=0x%x\n", 1517e705c121SKalle Valo status); 1518e705c121SKalle Valo break; 1519e705c121SKalle Valo } 1520e705c121SKalle Valo return ret; 1521e705c121SKalle Valo } 1522e705c121SKalle Valo 1523e705c121SKalle Valo int iwl_mvm_add_aux_sta(struct iwl_mvm *mvm) 1524e705c121SKalle Valo { 1525e705c121SKalle Valo unsigned int wdg_timeout = iwlmvm_mod_params.tfd_q_hang_detect ? 1526e705c121SKalle Valo mvm->cfg->base_params->wd_timeout : 1527e705c121SKalle Valo IWL_WATCHDOG_DISABLED; 1528e705c121SKalle Valo int ret; 1529e705c121SKalle Valo 1530e705c121SKalle Valo lockdep_assert_held(&mvm->mutex); 1531e705c121SKalle Valo 1532e705c121SKalle Valo /* Map Aux queue to fifo - needs to happen before adding Aux station */ 153328d0793eSLiad Kaufman if (!iwl_mvm_is_dqa_supported(mvm)) 1534e705c121SKalle Valo iwl_mvm_enable_ac_txq(mvm, mvm->aux_queue, mvm->aux_queue, 1535e705c121SKalle Valo IWL_MVM_TX_FIFO_MCAST, 0, wdg_timeout); 1536e705c121SKalle Valo 1537e705c121SKalle Valo /* Allocate aux station and assign to it the aux queue */ 1538e705c121SKalle Valo ret = iwl_mvm_allocate_int_sta(mvm, &mvm->aux_sta, BIT(mvm->aux_queue), 1539e705c121SKalle Valo NL80211_IFTYPE_UNSPECIFIED); 1540e705c121SKalle Valo if (ret) 1541e705c121SKalle Valo return ret; 1542e705c121SKalle Valo 154328d0793eSLiad Kaufman if (iwl_mvm_is_dqa_supported(mvm)) { 154428d0793eSLiad Kaufman struct iwl_trans_txq_scd_cfg cfg = { 154528d0793eSLiad Kaufman .fifo = IWL_MVM_TX_FIFO_MCAST, 154628d0793eSLiad Kaufman .sta_id = mvm->aux_sta.sta_id, 154728d0793eSLiad Kaufman .tid = IWL_MAX_TID_COUNT, 154828d0793eSLiad Kaufman .aggregate = false, 154928d0793eSLiad Kaufman .frame_limit = IWL_FRAME_LIMIT, 155028d0793eSLiad Kaufman }; 155128d0793eSLiad Kaufman 155228d0793eSLiad Kaufman iwl_mvm_enable_txq(mvm, mvm->aux_queue, mvm->aux_queue, 0, &cfg, 155328d0793eSLiad Kaufman wdg_timeout); 155428d0793eSLiad Kaufman } 155528d0793eSLiad Kaufman 1556e705c121SKalle Valo ret = iwl_mvm_add_int_sta_common(mvm, &mvm->aux_sta, NULL, 1557e705c121SKalle Valo MAC_INDEX_AUX, 0); 1558e705c121SKalle Valo 1559e705c121SKalle Valo if (ret) 1560e705c121SKalle Valo iwl_mvm_dealloc_int_sta(mvm, &mvm->aux_sta); 1561e705c121SKalle Valo return ret; 1562e705c121SKalle Valo } 1563e705c121SKalle Valo 15640e39eb03SChaya Rachel Ivgi int iwl_mvm_add_snif_sta(struct iwl_mvm *mvm, struct ieee80211_vif *vif) 15650e39eb03SChaya Rachel Ivgi { 15660e39eb03SChaya Rachel Ivgi struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 15670e39eb03SChaya Rachel Ivgi 15680e39eb03SChaya Rachel Ivgi lockdep_assert_held(&mvm->mutex); 15690e39eb03SChaya Rachel Ivgi return iwl_mvm_add_int_sta_common(mvm, &mvm->snif_sta, vif->addr, 15700e39eb03SChaya Rachel Ivgi mvmvif->id, 0); 15710e39eb03SChaya Rachel Ivgi } 15720e39eb03SChaya Rachel Ivgi 15730e39eb03SChaya Rachel Ivgi int iwl_mvm_rm_snif_sta(struct iwl_mvm *mvm, struct ieee80211_vif *vif) 15740e39eb03SChaya Rachel Ivgi { 15750e39eb03SChaya Rachel Ivgi int ret; 15760e39eb03SChaya Rachel Ivgi 15770e39eb03SChaya Rachel Ivgi lockdep_assert_held(&mvm->mutex); 15780e39eb03SChaya Rachel Ivgi 15790e39eb03SChaya Rachel Ivgi ret = iwl_mvm_rm_sta_common(mvm, mvm->snif_sta.sta_id); 15800e39eb03SChaya Rachel Ivgi if (ret) 15810e39eb03SChaya Rachel Ivgi IWL_WARN(mvm, "Failed sending remove station\n"); 15820e39eb03SChaya Rachel Ivgi 15830e39eb03SChaya Rachel Ivgi return ret; 15840e39eb03SChaya Rachel Ivgi } 15850e39eb03SChaya Rachel Ivgi 15860e39eb03SChaya Rachel Ivgi void iwl_mvm_dealloc_snif_sta(struct iwl_mvm *mvm) 15870e39eb03SChaya Rachel Ivgi { 15880e39eb03SChaya Rachel Ivgi iwl_mvm_dealloc_int_sta(mvm, &mvm->snif_sta); 15890e39eb03SChaya Rachel Ivgi } 15900e39eb03SChaya Rachel Ivgi 1591e705c121SKalle Valo void iwl_mvm_del_aux_sta(struct iwl_mvm *mvm) 1592e705c121SKalle Valo { 1593e705c121SKalle Valo lockdep_assert_held(&mvm->mutex); 1594e705c121SKalle Valo 1595e705c121SKalle Valo iwl_mvm_dealloc_int_sta(mvm, &mvm->aux_sta); 1596e705c121SKalle Valo } 1597e705c121SKalle Valo 1598e705c121SKalle Valo /* 1599e705c121SKalle Valo * Send the add station command for the vif's broadcast station. 1600e705c121SKalle Valo * Assumes that the station was already allocated. 1601e705c121SKalle Valo * 1602e705c121SKalle Valo * @mvm: the mvm component 1603e705c121SKalle Valo * @vif: the interface to which the broadcast station is added 1604e705c121SKalle Valo * @bsta: the broadcast station to add. 1605e705c121SKalle Valo */ 1606e705c121SKalle Valo int iwl_mvm_send_add_bcast_sta(struct iwl_mvm *mvm, struct ieee80211_vif *vif) 1607e705c121SKalle Valo { 1608e705c121SKalle Valo struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 1609e705c121SKalle Valo struct iwl_mvm_int_sta *bsta = &mvmvif->bcast_sta; 1610e705c121SKalle Valo static const u8 _baddr[] = {0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF}; 1611e705c121SKalle Valo const u8 *baddr = _baddr; 1612e705c121SKalle Valo 1613e705c121SKalle Valo lockdep_assert_held(&mvm->mutex); 1614e705c121SKalle Valo 1615de24f638SLiad Kaufman if (iwl_mvm_is_dqa_supported(mvm)) { 1616de24f638SLiad Kaufman struct iwl_trans_txq_scd_cfg cfg = { 1617de24f638SLiad Kaufman .fifo = IWL_MVM_TX_FIFO_VO, 1618de24f638SLiad Kaufman .sta_id = mvmvif->bcast_sta.sta_id, 1619de24f638SLiad Kaufman .tid = IWL_MAX_TID_COUNT, 1620de24f638SLiad Kaufman .aggregate = false, 1621de24f638SLiad Kaufman .frame_limit = IWL_FRAME_LIMIT, 1622de24f638SLiad Kaufman }; 1623de24f638SLiad Kaufman unsigned int wdg_timeout = 1624de24f638SLiad Kaufman iwl_mvm_get_wd_timeout(mvm, vif, false, false); 1625de24f638SLiad Kaufman int queue; 1626de24f638SLiad Kaufman 1627de24f638SLiad Kaufman if ((vif->type == NL80211_IFTYPE_AP) && 1628de24f638SLiad Kaufman (mvmvif->bcast_sta.tfd_queue_msk & 1629de24f638SLiad Kaufman BIT(IWL_MVM_DQA_AP_PROBE_RESP_QUEUE))) 1630de24f638SLiad Kaufman queue = IWL_MVM_DQA_AP_PROBE_RESP_QUEUE; 16314c965139SLiad Kaufman else if ((vif->type == NL80211_IFTYPE_P2P_DEVICE) && 16324c965139SLiad Kaufman (mvmvif->bcast_sta.tfd_queue_msk & 16334c965139SLiad Kaufman BIT(IWL_MVM_DQA_P2P_DEVICE_QUEUE))) 16344c965139SLiad Kaufman queue = IWL_MVM_DQA_P2P_DEVICE_QUEUE; 1635de24f638SLiad Kaufman else if (WARN(1, "Missed required TXQ for adding bcast STA\n")) 1636de24f638SLiad Kaufman return -EINVAL; 1637de24f638SLiad Kaufman 1638de24f638SLiad Kaufman iwl_mvm_enable_txq(mvm, queue, vif->hw_queue[0], 0, &cfg, 1639de24f638SLiad Kaufman wdg_timeout); 1640de24f638SLiad Kaufman } 1641de24f638SLiad Kaufman 1642e705c121SKalle Valo if (vif->type == NL80211_IFTYPE_ADHOC) 1643e705c121SKalle Valo baddr = vif->bss_conf.bssid; 1644e705c121SKalle Valo 1645e705c121SKalle Valo if (WARN_ON_ONCE(bsta->sta_id == IWL_MVM_STATION_COUNT)) 1646e705c121SKalle Valo return -ENOSPC; 1647e705c121SKalle Valo 1648e705c121SKalle Valo return iwl_mvm_add_int_sta_common(mvm, bsta, baddr, 1649e705c121SKalle Valo mvmvif->id, mvmvif->color); 1650e705c121SKalle Valo } 1651e705c121SKalle Valo 1652e705c121SKalle Valo /* Send the FW a request to remove the station from it's internal data 1653e705c121SKalle Valo * structures, but DO NOT remove the entry from the local data structures. */ 1654e705c121SKalle Valo int iwl_mvm_send_rm_bcast_sta(struct iwl_mvm *mvm, struct ieee80211_vif *vif) 1655e705c121SKalle Valo { 1656e705c121SKalle Valo struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 1657e705c121SKalle Valo int ret; 1658e705c121SKalle Valo 1659e705c121SKalle Valo lockdep_assert_held(&mvm->mutex); 1660e705c121SKalle Valo 1661e705c121SKalle Valo ret = iwl_mvm_rm_sta_common(mvm, mvmvif->bcast_sta.sta_id); 1662e705c121SKalle Valo if (ret) 1663e705c121SKalle Valo IWL_WARN(mvm, "Failed sending remove station\n"); 1664e705c121SKalle Valo return ret; 1665e705c121SKalle Valo } 1666e705c121SKalle Valo 1667e705c121SKalle Valo int iwl_mvm_alloc_bcast_sta(struct iwl_mvm *mvm, struct ieee80211_vif *vif) 1668e705c121SKalle Valo { 1669e705c121SKalle Valo struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 1670de24f638SLiad Kaufman u32 qmask = 0; 1671e705c121SKalle Valo 1672e705c121SKalle Valo lockdep_assert_held(&mvm->mutex); 1673e705c121SKalle Valo 1674de24f638SLiad Kaufman if (!iwl_mvm_is_dqa_supported(mvm)) 1675e705c121SKalle Valo qmask = iwl_mvm_mac_get_queues_mask(vif); 1676e705c121SKalle Valo 1677de24f638SLiad Kaufman if (vif->type == NL80211_IFTYPE_AP) { 1678e705c121SKalle Valo /* 1679e705c121SKalle Valo * The firmware defines the TFD queue mask to only be relevant 1680e705c121SKalle Valo * for *unicast* queues, so the multicast (CAB) queue shouldn't 1681e705c121SKalle Valo * be included. 1682e705c121SKalle Valo */ 1683e705c121SKalle Valo qmask &= ~BIT(vif->cab_queue); 1684e705c121SKalle Valo 1685de24f638SLiad Kaufman if (iwl_mvm_is_dqa_supported(mvm)) 1686de24f638SLiad Kaufman qmask |= BIT(IWL_MVM_DQA_AP_PROBE_RESP_QUEUE); 16874c965139SLiad Kaufman } else if (iwl_mvm_is_dqa_supported(mvm) && 16884c965139SLiad Kaufman vif->type == NL80211_IFTYPE_P2P_DEVICE) { 16894c965139SLiad Kaufman qmask |= BIT(IWL_MVM_DQA_P2P_DEVICE_QUEUE); 1690de24f638SLiad Kaufman } 1691de24f638SLiad Kaufman 1692e705c121SKalle Valo return iwl_mvm_allocate_int_sta(mvm, &mvmvif->bcast_sta, qmask, 1693e705c121SKalle Valo ieee80211_vif_type_p2p(vif)); 1694e705c121SKalle Valo } 1695e705c121SKalle Valo 1696e705c121SKalle Valo /* Allocate a new station entry for the broadcast station to the given vif, 1697e705c121SKalle Valo * and send it to the FW. 1698e705c121SKalle Valo * Note that each P2P mac should have its own broadcast station. 1699e705c121SKalle Valo * 1700e705c121SKalle Valo * @mvm: the mvm component 1701e705c121SKalle Valo * @vif: the interface to which the broadcast station is added 1702e705c121SKalle Valo * @bsta: the broadcast station to add. */ 1703e705c121SKalle Valo int iwl_mvm_add_bcast_sta(struct iwl_mvm *mvm, struct ieee80211_vif *vif) 1704e705c121SKalle Valo { 1705e705c121SKalle Valo struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 1706e705c121SKalle Valo struct iwl_mvm_int_sta *bsta = &mvmvif->bcast_sta; 1707e705c121SKalle Valo int ret; 1708e705c121SKalle Valo 1709e705c121SKalle Valo lockdep_assert_held(&mvm->mutex); 1710e705c121SKalle Valo 1711e705c121SKalle Valo ret = iwl_mvm_alloc_bcast_sta(mvm, vif); 1712e705c121SKalle Valo if (ret) 1713e705c121SKalle Valo return ret; 1714e705c121SKalle Valo 1715e705c121SKalle Valo ret = iwl_mvm_send_add_bcast_sta(mvm, vif); 1716e705c121SKalle Valo 1717e705c121SKalle Valo if (ret) 1718e705c121SKalle Valo iwl_mvm_dealloc_int_sta(mvm, bsta); 1719e705c121SKalle Valo 1720e705c121SKalle Valo return ret; 1721e705c121SKalle Valo } 1722e705c121SKalle Valo 1723e705c121SKalle Valo void iwl_mvm_dealloc_bcast_sta(struct iwl_mvm *mvm, struct ieee80211_vif *vif) 1724e705c121SKalle Valo { 1725e705c121SKalle Valo struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 1726e705c121SKalle Valo 1727e705c121SKalle Valo iwl_mvm_dealloc_int_sta(mvm, &mvmvif->bcast_sta); 1728e705c121SKalle Valo } 1729e705c121SKalle Valo 1730e705c121SKalle Valo /* 1731e705c121SKalle Valo * Send the FW a request to remove the station from it's internal data 1732e705c121SKalle Valo * structures, and in addition remove it from the local data structure. 1733e705c121SKalle Valo */ 1734e705c121SKalle Valo int iwl_mvm_rm_bcast_sta(struct iwl_mvm *mvm, struct ieee80211_vif *vif) 1735e705c121SKalle Valo { 1736e705c121SKalle Valo int ret; 1737e705c121SKalle Valo 1738e705c121SKalle Valo lockdep_assert_held(&mvm->mutex); 1739e705c121SKalle Valo 1740e705c121SKalle Valo ret = iwl_mvm_send_rm_bcast_sta(mvm, vif); 1741e705c121SKalle Valo 1742e705c121SKalle Valo iwl_mvm_dealloc_bcast_sta(mvm, vif); 1743e705c121SKalle Valo 1744e705c121SKalle Valo return ret; 1745e705c121SKalle Valo } 1746e705c121SKalle Valo 1747e705c121SKalle Valo #define IWL_MAX_RX_BA_SESSIONS 16 1748e705c121SKalle Valo 1749b915c101SSara Sharon static void iwl_mvm_sync_rxq_del_ba(struct iwl_mvm *mvm, u8 baid) 175010b2b201SSara Sharon { 1751b915c101SSara Sharon struct iwl_mvm_delba_notif notif = { 1752b915c101SSara Sharon .metadata.type = IWL_MVM_RXQ_NOTIF_DEL_BA, 1753b915c101SSara Sharon .metadata.sync = 1, 1754b915c101SSara Sharon .delba.baid = baid, 1755b915c101SSara Sharon }; 1756b915c101SSara Sharon iwl_mvm_sync_rx_queues_internal(mvm, (void *)¬if, sizeof(notif)); 175710b2b201SSara Sharon }; 175810b2b201SSara Sharon 1759b915c101SSara Sharon static void iwl_mvm_free_reorder(struct iwl_mvm *mvm, 1760b915c101SSara Sharon struct iwl_mvm_baid_data *data) 1761b915c101SSara Sharon { 1762b915c101SSara Sharon int i; 1763b915c101SSara Sharon 1764b915c101SSara Sharon iwl_mvm_sync_rxq_del_ba(mvm, data->baid); 1765b915c101SSara Sharon 1766b915c101SSara Sharon for (i = 0; i < mvm->trans->num_rx_queues; i++) { 1767b915c101SSara Sharon int j; 1768b915c101SSara Sharon struct iwl_mvm_reorder_buffer *reorder_buf = 1769b915c101SSara Sharon &data->reorder_buf[i]; 1770b915c101SSara Sharon 17710690405fSSara Sharon spin_lock_bh(&reorder_buf->lock); 17720690405fSSara Sharon if (likely(!reorder_buf->num_stored)) { 17730690405fSSara Sharon spin_unlock_bh(&reorder_buf->lock); 1774b915c101SSara Sharon continue; 17750690405fSSara Sharon } 1776b915c101SSara Sharon 1777b915c101SSara Sharon /* 1778b915c101SSara Sharon * This shouldn't happen in regular DELBA since the internal 1779b915c101SSara Sharon * delBA notification should trigger a release of all frames in 1780b915c101SSara Sharon * the reorder buffer. 1781b915c101SSara Sharon */ 1782b915c101SSara Sharon WARN_ON(1); 1783b915c101SSara Sharon 1784b915c101SSara Sharon for (j = 0; j < reorder_buf->buf_size; j++) 1785b915c101SSara Sharon __skb_queue_purge(&reorder_buf->entries[j]); 17860690405fSSara Sharon /* 17870690405fSSara Sharon * Prevent timer re-arm. This prevents a very far fetched case 17880690405fSSara Sharon * where we timed out on the notification. There may be prior 17890690405fSSara Sharon * RX frames pending in the RX queue before the notification 17900690405fSSara Sharon * that might get processed between now and the actual deletion 17910690405fSSara Sharon * and we would re-arm the timer although we are deleting the 17920690405fSSara Sharon * reorder buffer. 17930690405fSSara Sharon */ 17940690405fSSara Sharon reorder_buf->removed = true; 17950690405fSSara Sharon spin_unlock_bh(&reorder_buf->lock); 17960690405fSSara Sharon del_timer_sync(&reorder_buf->reorder_timer); 1797b915c101SSara Sharon } 1798b915c101SSara Sharon } 1799b915c101SSara Sharon 1800b915c101SSara Sharon static void iwl_mvm_init_reorder_buffer(struct iwl_mvm *mvm, 1801b915c101SSara Sharon u32 sta_id, 1802b915c101SSara Sharon struct iwl_mvm_baid_data *data, 1803b915c101SSara Sharon u16 ssn, u8 buf_size) 1804b915c101SSara Sharon { 1805b915c101SSara Sharon int i; 1806b915c101SSara Sharon 1807b915c101SSara Sharon for (i = 0; i < mvm->trans->num_rx_queues; i++) { 1808b915c101SSara Sharon struct iwl_mvm_reorder_buffer *reorder_buf = 1809b915c101SSara Sharon &data->reorder_buf[i]; 1810b915c101SSara Sharon int j; 1811b915c101SSara Sharon 1812b915c101SSara Sharon reorder_buf->num_stored = 0; 1813b915c101SSara Sharon reorder_buf->head_sn = ssn; 1814b915c101SSara Sharon reorder_buf->buf_size = buf_size; 18150690405fSSara Sharon /* rx reorder timer */ 18160690405fSSara Sharon reorder_buf->reorder_timer.function = 18170690405fSSara Sharon iwl_mvm_reorder_timer_expired; 18180690405fSSara Sharon reorder_buf->reorder_timer.data = (unsigned long)reorder_buf; 18190690405fSSara Sharon init_timer(&reorder_buf->reorder_timer); 18200690405fSSara Sharon spin_lock_init(&reorder_buf->lock); 18210690405fSSara Sharon reorder_buf->mvm = mvm; 1822b915c101SSara Sharon reorder_buf->queue = i; 1823b915c101SSara Sharon reorder_buf->sta_id = sta_id; 1824b915c101SSara Sharon for (j = 0; j < reorder_buf->buf_size; j++) 1825b915c101SSara Sharon __skb_queue_head_init(&reorder_buf->entries[j]); 1826b915c101SSara Sharon } 182710b2b201SSara Sharon } 182810b2b201SSara Sharon 1829e705c121SKalle Valo int iwl_mvm_sta_rx_agg(struct iwl_mvm *mvm, struct ieee80211_sta *sta, 183010b2b201SSara Sharon int tid, u16 ssn, bool start, u8 buf_size, u16 timeout) 1831e705c121SKalle Valo { 1832e705c121SKalle Valo struct iwl_mvm_sta *mvm_sta = iwl_mvm_sta_from_mac80211(sta); 1833e705c121SKalle Valo struct iwl_mvm_add_sta_cmd cmd = {}; 183410b2b201SSara Sharon struct iwl_mvm_baid_data *baid_data = NULL; 1835e705c121SKalle Valo int ret; 1836e705c121SKalle Valo u32 status; 1837e705c121SKalle Valo 1838e705c121SKalle Valo lockdep_assert_held(&mvm->mutex); 1839e705c121SKalle Valo 1840e705c121SKalle Valo if (start && mvm->rx_ba_sessions >= IWL_MAX_RX_BA_SESSIONS) { 1841e705c121SKalle Valo IWL_WARN(mvm, "Not enough RX BA SESSIONS\n"); 1842e705c121SKalle Valo return -ENOSPC; 1843e705c121SKalle Valo } 1844e705c121SKalle Valo 184510b2b201SSara Sharon if (iwl_mvm_has_new_rx_api(mvm) && start) { 184610b2b201SSara Sharon /* 184710b2b201SSara Sharon * Allocate here so if allocation fails we can bail out early 184810b2b201SSara Sharon * before starting the BA session in the firmware 184910b2b201SSara Sharon */ 1850b915c101SSara Sharon baid_data = kzalloc(sizeof(*baid_data) + 1851b915c101SSara Sharon mvm->trans->num_rx_queues * 1852b915c101SSara Sharon sizeof(baid_data->reorder_buf[0]), 1853b915c101SSara Sharon GFP_KERNEL); 185410b2b201SSara Sharon if (!baid_data) 185510b2b201SSara Sharon return -ENOMEM; 185610b2b201SSara Sharon } 185710b2b201SSara Sharon 1858e705c121SKalle Valo cmd.mac_id_n_color = cpu_to_le32(mvm_sta->mac_id_n_color); 1859e705c121SKalle Valo cmd.sta_id = mvm_sta->sta_id; 1860e705c121SKalle Valo cmd.add_modify = STA_MODE_MODIFY; 1861e705c121SKalle Valo if (start) { 1862e705c121SKalle Valo cmd.add_immediate_ba_tid = (u8) tid; 1863e705c121SKalle Valo cmd.add_immediate_ba_ssn = cpu_to_le16(ssn); 1864854c5705SSara Sharon cmd.rx_ba_window = cpu_to_le16((u16)buf_size); 1865e705c121SKalle Valo } else { 1866e705c121SKalle Valo cmd.remove_immediate_ba_tid = (u8) tid; 1867e705c121SKalle Valo } 1868e705c121SKalle Valo cmd.modify_mask = start ? STA_MODIFY_ADD_BA_TID : 1869e705c121SKalle Valo STA_MODIFY_REMOVE_BA_TID; 1870e705c121SKalle Valo 1871e705c121SKalle Valo status = ADD_STA_SUCCESS; 1872854c5705SSara Sharon ret = iwl_mvm_send_cmd_pdu_status(mvm, ADD_STA, 1873854c5705SSara Sharon iwl_mvm_add_sta_cmd_size(mvm), 1874e705c121SKalle Valo &cmd, &status); 1875e705c121SKalle Valo if (ret) 187610b2b201SSara Sharon goto out_free; 1877e705c121SKalle Valo 1878837c4da9SSara Sharon switch (status & IWL_ADD_STA_STATUS_MASK) { 1879e705c121SKalle Valo case ADD_STA_SUCCESS: 188035263a03SSara Sharon IWL_DEBUG_HT(mvm, "RX BA Session %sed in fw\n", 1881e705c121SKalle Valo start ? "start" : "stopp"); 1882e705c121SKalle Valo break; 1883e705c121SKalle Valo case ADD_STA_IMMEDIATE_BA_FAILURE: 1884e705c121SKalle Valo IWL_WARN(mvm, "RX BA Session refused by fw\n"); 1885e705c121SKalle Valo ret = -ENOSPC; 1886e705c121SKalle Valo break; 1887e705c121SKalle Valo default: 1888e705c121SKalle Valo ret = -EIO; 1889e705c121SKalle Valo IWL_ERR(mvm, "RX BA Session failed %sing, status 0x%x\n", 1890e705c121SKalle Valo start ? "start" : "stopp", status); 1891e705c121SKalle Valo break; 1892e705c121SKalle Valo } 1893e705c121SKalle Valo 189410b2b201SSara Sharon if (ret) 189510b2b201SSara Sharon goto out_free; 189610b2b201SSara Sharon 189710b2b201SSara Sharon if (start) { 189810b2b201SSara Sharon u8 baid; 189910b2b201SSara Sharon 1900e705c121SKalle Valo mvm->rx_ba_sessions++; 190110b2b201SSara Sharon 190210b2b201SSara Sharon if (!iwl_mvm_has_new_rx_api(mvm)) 190310b2b201SSara Sharon return 0; 190410b2b201SSara Sharon 190510b2b201SSara Sharon if (WARN_ON(!(status & IWL_ADD_STA_BAID_VALID_MASK))) { 190610b2b201SSara Sharon ret = -EINVAL; 190710b2b201SSara Sharon goto out_free; 190810b2b201SSara Sharon } 190910b2b201SSara Sharon baid = (u8)((status & IWL_ADD_STA_BAID_MASK) >> 191010b2b201SSara Sharon IWL_ADD_STA_BAID_SHIFT); 191110b2b201SSara Sharon baid_data->baid = baid; 191210b2b201SSara Sharon baid_data->timeout = timeout; 191310b2b201SSara Sharon baid_data->last_rx = jiffies; 191410b2b201SSara Sharon init_timer(&baid_data->session_timer); 191510b2b201SSara Sharon baid_data->session_timer.function = 191610b2b201SSara Sharon iwl_mvm_rx_agg_session_expired; 191710b2b201SSara Sharon baid_data->session_timer.data = 191810b2b201SSara Sharon (unsigned long)&mvm->baid_map[baid]; 191910b2b201SSara Sharon baid_data->mvm = mvm; 192010b2b201SSara Sharon baid_data->tid = tid; 192110b2b201SSara Sharon baid_data->sta_id = mvm_sta->sta_id; 192210b2b201SSara Sharon 192310b2b201SSara Sharon mvm_sta->tid_to_baid[tid] = baid; 192410b2b201SSara Sharon if (timeout) 192510b2b201SSara Sharon mod_timer(&baid_data->session_timer, 192610b2b201SSara Sharon TU_TO_EXP_TIME(timeout * 2)); 192710b2b201SSara Sharon 1928b915c101SSara Sharon iwl_mvm_init_reorder_buffer(mvm, mvm_sta->sta_id, 1929b915c101SSara Sharon baid_data, ssn, buf_size); 193010b2b201SSara Sharon /* 193110b2b201SSara Sharon * protect the BA data with RCU to cover a case where our 193210b2b201SSara Sharon * internal RX sync mechanism will timeout (not that it's 193310b2b201SSara Sharon * supposed to happen) and we will free the session data while 193410b2b201SSara Sharon * RX is being processed in parallel 193510b2b201SSara Sharon */ 193635263a03SSara Sharon IWL_DEBUG_HT(mvm, "Sta %d(%d) is assigned to BAID %d\n", 193735263a03SSara Sharon mvm_sta->sta_id, tid, baid); 193810b2b201SSara Sharon WARN_ON(rcu_access_pointer(mvm->baid_map[baid])); 193910b2b201SSara Sharon rcu_assign_pointer(mvm->baid_map[baid], baid_data); 194060dec523SSara Sharon } else { 194110b2b201SSara Sharon u8 baid = mvm_sta->tid_to_baid[tid]; 194210b2b201SSara Sharon 194360dec523SSara Sharon if (mvm->rx_ba_sessions > 0) 1944e705c121SKalle Valo /* check that restart flow didn't zero the counter */ 1945e705c121SKalle Valo mvm->rx_ba_sessions--; 194610b2b201SSara Sharon if (!iwl_mvm_has_new_rx_api(mvm)) 194710b2b201SSara Sharon return 0; 1948e705c121SKalle Valo 194910b2b201SSara Sharon if (WARN_ON(baid == IWL_RX_REORDER_DATA_INVALID_BAID)) 195010b2b201SSara Sharon return -EINVAL; 195110b2b201SSara Sharon 195210b2b201SSara Sharon baid_data = rcu_access_pointer(mvm->baid_map[baid]); 195310b2b201SSara Sharon if (WARN_ON(!baid_data)) 195410b2b201SSara Sharon return -EINVAL; 195510b2b201SSara Sharon 195610b2b201SSara Sharon /* synchronize all rx queues so we can safely delete */ 1957b915c101SSara Sharon iwl_mvm_free_reorder(mvm, baid_data); 195810b2b201SSara Sharon del_timer_sync(&baid_data->session_timer); 195910b2b201SSara Sharon RCU_INIT_POINTER(mvm->baid_map[baid], NULL); 196010b2b201SSara Sharon kfree_rcu(baid_data, rcu_head); 196135263a03SSara Sharon IWL_DEBUG_HT(mvm, "BAID %d is free\n", baid); 196210b2b201SSara Sharon } 196310b2b201SSara Sharon return 0; 196410b2b201SSara Sharon 196510b2b201SSara Sharon out_free: 196610b2b201SSara Sharon kfree(baid_data); 1967e705c121SKalle Valo return ret; 1968e705c121SKalle Valo } 1969e705c121SKalle Valo 19709794c64fSLiad Kaufman int iwl_mvm_sta_tx_agg(struct iwl_mvm *mvm, struct ieee80211_sta *sta, 1971e705c121SKalle Valo int tid, u8 queue, bool start) 1972e705c121SKalle Valo { 1973e705c121SKalle Valo struct iwl_mvm_sta *mvm_sta = iwl_mvm_sta_from_mac80211(sta); 1974e705c121SKalle Valo struct iwl_mvm_add_sta_cmd cmd = {}; 1975e705c121SKalle Valo int ret; 1976e705c121SKalle Valo u32 status; 1977e705c121SKalle Valo 1978e705c121SKalle Valo lockdep_assert_held(&mvm->mutex); 1979e705c121SKalle Valo 1980e705c121SKalle Valo if (start) { 1981e705c121SKalle Valo mvm_sta->tfd_queue_msk |= BIT(queue); 1982e705c121SKalle Valo mvm_sta->tid_disable_agg &= ~BIT(tid); 1983e705c121SKalle Valo } else { 1984cf961e16SLiad Kaufman /* In DQA-mode the queue isn't removed on agg termination */ 1985cf961e16SLiad Kaufman if (!iwl_mvm_is_dqa_supported(mvm)) 1986e705c121SKalle Valo mvm_sta->tfd_queue_msk &= ~BIT(queue); 1987e705c121SKalle Valo mvm_sta->tid_disable_agg |= BIT(tid); 1988e705c121SKalle Valo } 1989e705c121SKalle Valo 1990e705c121SKalle Valo cmd.mac_id_n_color = cpu_to_le32(mvm_sta->mac_id_n_color); 1991e705c121SKalle Valo cmd.sta_id = mvm_sta->sta_id; 1992e705c121SKalle Valo cmd.add_modify = STA_MODE_MODIFY; 1993e705c121SKalle Valo cmd.modify_mask = STA_MODIFY_QUEUES | STA_MODIFY_TID_DISABLE_TX; 1994e705c121SKalle Valo cmd.tfd_queue_msk = cpu_to_le32(mvm_sta->tfd_queue_msk); 1995e705c121SKalle Valo cmd.tid_disable_tx = cpu_to_le16(mvm_sta->tid_disable_agg); 1996e705c121SKalle Valo 1997e705c121SKalle Valo status = ADD_STA_SUCCESS; 1998854c5705SSara Sharon ret = iwl_mvm_send_cmd_pdu_status(mvm, ADD_STA, 1999854c5705SSara Sharon iwl_mvm_add_sta_cmd_size(mvm), 2000e705c121SKalle Valo &cmd, &status); 2001e705c121SKalle Valo if (ret) 2002e705c121SKalle Valo return ret; 2003e705c121SKalle Valo 2004837c4da9SSara Sharon switch (status & IWL_ADD_STA_STATUS_MASK) { 2005e705c121SKalle Valo case ADD_STA_SUCCESS: 2006e705c121SKalle Valo break; 2007e705c121SKalle Valo default: 2008e705c121SKalle Valo ret = -EIO; 2009e705c121SKalle Valo IWL_ERR(mvm, "TX BA Session failed %sing, status 0x%x\n", 2010e705c121SKalle Valo start ? "start" : "stopp", status); 2011e705c121SKalle Valo break; 2012e705c121SKalle Valo } 2013e705c121SKalle Valo 2014e705c121SKalle Valo return ret; 2015e705c121SKalle Valo } 2016e705c121SKalle Valo 2017e705c121SKalle Valo const u8 tid_to_mac80211_ac[] = { 2018e705c121SKalle Valo IEEE80211_AC_BE, 2019e705c121SKalle Valo IEEE80211_AC_BK, 2020e705c121SKalle Valo IEEE80211_AC_BK, 2021e705c121SKalle Valo IEEE80211_AC_BE, 2022e705c121SKalle Valo IEEE80211_AC_VI, 2023e705c121SKalle Valo IEEE80211_AC_VI, 2024e705c121SKalle Valo IEEE80211_AC_VO, 2025e705c121SKalle Valo IEEE80211_AC_VO, 20269794c64fSLiad Kaufman IEEE80211_AC_VO, /* We treat MGMT as TID 8, which is set as AC_VO */ 2027e705c121SKalle Valo }; 2028e705c121SKalle Valo 2029e705c121SKalle Valo static const u8 tid_to_ucode_ac[] = { 2030e705c121SKalle Valo AC_BE, 2031e705c121SKalle Valo AC_BK, 2032e705c121SKalle Valo AC_BK, 2033e705c121SKalle Valo AC_BE, 2034e705c121SKalle Valo AC_VI, 2035e705c121SKalle Valo AC_VI, 2036e705c121SKalle Valo AC_VO, 2037e705c121SKalle Valo AC_VO, 2038e705c121SKalle Valo }; 2039e705c121SKalle Valo 2040e705c121SKalle Valo int iwl_mvm_sta_tx_agg_start(struct iwl_mvm *mvm, struct ieee80211_vif *vif, 2041e705c121SKalle Valo struct ieee80211_sta *sta, u16 tid, u16 *ssn) 2042e705c121SKalle Valo { 2043e705c121SKalle Valo struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta); 2044e705c121SKalle Valo struct iwl_mvm_tid_data *tid_data; 2045e705c121SKalle Valo int txq_id; 2046e705c121SKalle Valo int ret; 2047e705c121SKalle Valo 2048e705c121SKalle Valo if (WARN_ON_ONCE(tid >= IWL_MAX_TID_COUNT)) 2049e705c121SKalle Valo return -EINVAL; 2050e705c121SKalle Valo 2051e705c121SKalle Valo if (mvmsta->tid_data[tid].state != IWL_AGG_OFF) { 2052e705c121SKalle Valo IWL_ERR(mvm, "Start AGG when state is not IWL_AGG_OFF %d!\n", 2053e705c121SKalle Valo mvmsta->tid_data[tid].state); 2054e705c121SKalle Valo return -ENXIO; 2055e705c121SKalle Valo } 2056e705c121SKalle Valo 2057e705c121SKalle Valo lockdep_assert_held(&mvm->mutex); 2058e705c121SKalle Valo 2059e705c121SKalle Valo spin_lock_bh(&mvmsta->lock); 2060e705c121SKalle Valo 2061e705c121SKalle Valo /* possible race condition - we entered D0i3 while starting agg */ 2062e705c121SKalle Valo if (test_bit(IWL_MVM_STATUS_IN_D0I3, &mvm->status)) { 2063e705c121SKalle Valo spin_unlock_bh(&mvmsta->lock); 2064e705c121SKalle Valo IWL_ERR(mvm, "Entered D0i3 while starting Tx agg\n"); 2065e705c121SKalle Valo return -EIO; 2066e705c121SKalle Valo } 2067e705c121SKalle Valo 20689f9af3d7SLiad Kaufman spin_lock(&mvm->queue_info_lock); 2069e705c121SKalle Valo 2070cf961e16SLiad Kaufman /* 2071cf961e16SLiad Kaufman * Note the possible cases: 2072cf961e16SLiad Kaufman * 1. In DQA mode with an enabled TXQ - TXQ needs to become agg'ed 2073cf961e16SLiad Kaufman * 2. Non-DQA mode: the TXQ hasn't yet been enabled, so find a free 2074cf961e16SLiad Kaufman * one and mark it as reserved 2075cf961e16SLiad Kaufman * 3. In DQA mode, but no traffic yet on this TID: same treatment as in 2076cf961e16SLiad Kaufman * non-DQA mode, since the TXQ hasn't yet been allocated 2077cf961e16SLiad Kaufman */ 2078cf961e16SLiad Kaufman txq_id = mvmsta->tid_data[tid].txq_id; 20799f9af3d7SLiad Kaufman if (iwl_mvm_is_dqa_supported(mvm) && 20809f9af3d7SLiad Kaufman unlikely(mvm->queue_info[txq_id].status == IWL_MVM_QUEUE_SHARED)) { 20819f9af3d7SLiad Kaufman ret = -ENXIO; 20829f9af3d7SLiad Kaufman IWL_DEBUG_TX_QUEUES(mvm, 20839f9af3d7SLiad Kaufman "Can't start tid %d agg on shared queue!\n", 20849f9af3d7SLiad Kaufman tid); 20859f9af3d7SLiad Kaufman goto release_locks; 20869f9af3d7SLiad Kaufman } else if (!iwl_mvm_is_dqa_supported(mvm) || 2087cf961e16SLiad Kaufman mvm->queue_info[txq_id].status != IWL_MVM_QUEUE_READY) { 20889794c64fSLiad Kaufman txq_id = iwl_mvm_find_free_queue(mvm, mvmsta->sta_id, 20899794c64fSLiad Kaufman mvm->first_agg_queue, 2090e705c121SKalle Valo mvm->last_agg_queue); 2091e705c121SKalle Valo if (txq_id < 0) { 2092e705c121SKalle Valo ret = txq_id; 2093e705c121SKalle Valo IWL_ERR(mvm, "Failed to allocate agg queue\n"); 2094e705c121SKalle Valo goto release_locks; 2095e705c121SKalle Valo } 2096cf961e16SLiad Kaufman 2097cf961e16SLiad Kaufman /* TXQ hasn't yet been enabled, so mark it only as reserved */ 2098cf961e16SLiad Kaufman mvm->queue_info[txq_id].status = IWL_MVM_QUEUE_RESERVED; 2099cf961e16SLiad Kaufman } 21009f9af3d7SLiad Kaufman 21019f9af3d7SLiad Kaufman spin_unlock(&mvm->queue_info_lock); 2102e705c121SKalle Valo 2103cf961e16SLiad Kaufman IWL_DEBUG_TX_QUEUES(mvm, 2104cf961e16SLiad Kaufman "AGG for tid %d will be on queue #%d\n", 2105cf961e16SLiad Kaufman tid, txq_id); 2106cf961e16SLiad Kaufman 2107e705c121SKalle Valo tid_data = &mvmsta->tid_data[tid]; 2108e705c121SKalle Valo tid_data->ssn = IEEE80211_SEQ_TO_SN(tid_data->seq_number); 2109e705c121SKalle Valo tid_data->txq_id = txq_id; 2110e705c121SKalle Valo *ssn = tid_data->ssn; 2111e705c121SKalle Valo 2112e705c121SKalle Valo IWL_DEBUG_TX_QUEUES(mvm, 2113e705c121SKalle Valo "Start AGG: sta %d tid %d queue %d - ssn = %d, next_recl = %d\n", 2114e705c121SKalle Valo mvmsta->sta_id, tid, txq_id, tid_data->ssn, 2115e705c121SKalle Valo tid_data->next_reclaimed); 2116e705c121SKalle Valo 2117e705c121SKalle Valo if (tid_data->ssn == tid_data->next_reclaimed) { 2118e705c121SKalle Valo tid_data->state = IWL_AGG_STARTING; 2119e705c121SKalle Valo ieee80211_start_tx_ba_cb_irqsafe(vif, sta->addr, tid); 2120e705c121SKalle Valo } else { 2121e705c121SKalle Valo tid_data->state = IWL_EMPTYING_HW_QUEUE_ADDBA; 2122e705c121SKalle Valo } 2123e705c121SKalle Valo 2124e705c121SKalle Valo ret = 0; 21259f9af3d7SLiad Kaufman goto out; 2126e705c121SKalle Valo 2127e705c121SKalle Valo release_locks: 21289f9af3d7SLiad Kaufman spin_unlock(&mvm->queue_info_lock); 21299f9af3d7SLiad Kaufman out: 2130e705c121SKalle Valo spin_unlock_bh(&mvmsta->lock); 2131e705c121SKalle Valo 2132e705c121SKalle Valo return ret; 2133e705c121SKalle Valo } 2134e705c121SKalle Valo 2135e705c121SKalle Valo int iwl_mvm_sta_tx_agg_oper(struct iwl_mvm *mvm, struct ieee80211_vif *vif, 2136bb81bb68SEmmanuel Grumbach struct ieee80211_sta *sta, u16 tid, u8 buf_size, 2137bb81bb68SEmmanuel Grumbach bool amsdu) 2138e705c121SKalle Valo { 2139e705c121SKalle Valo struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta); 2140e705c121SKalle Valo struct iwl_mvm_tid_data *tid_data = &mvmsta->tid_data[tid]; 2141e705c121SKalle Valo unsigned int wdg_timeout = 2142e705c121SKalle Valo iwl_mvm_get_wd_timeout(mvm, vif, sta->tdls, false); 2143eea76c36SEmmanuel Grumbach int queue, ret; 2144cf961e16SLiad Kaufman bool alloc_queue = true; 21459f9af3d7SLiad Kaufman enum iwl_mvm_queue_status queue_status; 2146e705c121SKalle Valo u16 ssn; 2147e705c121SKalle Valo 2148eea76c36SEmmanuel Grumbach struct iwl_trans_txq_scd_cfg cfg = { 2149eea76c36SEmmanuel Grumbach .sta_id = mvmsta->sta_id, 2150eea76c36SEmmanuel Grumbach .tid = tid, 2151eea76c36SEmmanuel Grumbach .frame_limit = buf_size, 2152eea76c36SEmmanuel Grumbach .aggregate = true, 2153eea76c36SEmmanuel Grumbach }; 2154eea76c36SEmmanuel Grumbach 2155e705c121SKalle Valo BUILD_BUG_ON((sizeof(mvmsta->agg_tids) * BITS_PER_BYTE) 2156e705c121SKalle Valo != IWL_MAX_TID_COUNT); 2157e705c121SKalle Valo 2158e705c121SKalle Valo buf_size = min_t(int, buf_size, LINK_QUAL_AGG_FRAME_LIMIT_DEF); 2159e705c121SKalle Valo 2160e705c121SKalle Valo spin_lock_bh(&mvmsta->lock); 2161e705c121SKalle Valo ssn = tid_data->ssn; 2162e705c121SKalle Valo queue = tid_data->txq_id; 2163e705c121SKalle Valo tid_data->state = IWL_AGG_ON; 2164e705c121SKalle Valo mvmsta->agg_tids |= BIT(tid); 2165e705c121SKalle Valo tid_data->ssn = 0xffff; 2166bb81bb68SEmmanuel Grumbach tid_data->amsdu_in_ampdu_allowed = amsdu; 2167e705c121SKalle Valo spin_unlock_bh(&mvmsta->lock); 2168e705c121SKalle Valo 2169eea76c36SEmmanuel Grumbach cfg.fifo = iwl_mvm_ac_to_tx_fifo[tid_to_mac80211_ac[tid]]; 2170e705c121SKalle Valo 21719f9af3d7SLiad Kaufman spin_lock_bh(&mvm->queue_info_lock); 21729f9af3d7SLiad Kaufman queue_status = mvm->queue_info[queue].status; 21739f9af3d7SLiad Kaufman spin_unlock_bh(&mvm->queue_info_lock); 21749f9af3d7SLiad Kaufman 2175cf961e16SLiad Kaufman /* In DQA mode, the existing queue might need to be reconfigured */ 2176cf961e16SLiad Kaufman if (iwl_mvm_is_dqa_supported(mvm)) { 2177cf961e16SLiad Kaufman /* Maybe there is no need to even alloc a queue... */ 2178cf961e16SLiad Kaufman if (mvm->queue_info[queue].status == IWL_MVM_QUEUE_READY) 2179cf961e16SLiad Kaufman alloc_queue = false; 2180cf961e16SLiad Kaufman 2181cf961e16SLiad Kaufman /* 2182cf961e16SLiad Kaufman * Only reconfig the SCD for the queue if the window size has 2183cf961e16SLiad Kaufman * changed from current (become smaller) 2184cf961e16SLiad Kaufman */ 2185cf961e16SLiad Kaufman if (!alloc_queue && buf_size < mvmsta->max_agg_bufsize) { 2186cf961e16SLiad Kaufman /* 2187cf961e16SLiad Kaufman * If reconfiguring an existing queue, it first must be 2188cf961e16SLiad Kaufman * drained 2189cf961e16SLiad Kaufman */ 2190cf961e16SLiad Kaufman ret = iwl_trans_wait_tx_queue_empty(mvm->trans, 2191cf961e16SLiad Kaufman BIT(queue)); 2192cf961e16SLiad Kaufman if (ret) { 2193cf961e16SLiad Kaufman IWL_ERR(mvm, 2194cf961e16SLiad Kaufman "Error draining queue before reconfig\n"); 2195cf961e16SLiad Kaufman return ret; 2196cf961e16SLiad Kaufman } 2197cf961e16SLiad Kaufman 2198cf961e16SLiad Kaufman ret = iwl_mvm_reconfig_scd(mvm, queue, cfg.fifo, 2199cf961e16SLiad Kaufman mvmsta->sta_id, tid, 2200cf961e16SLiad Kaufman buf_size, ssn); 2201cf961e16SLiad Kaufman if (ret) { 2202cf961e16SLiad Kaufman IWL_ERR(mvm, 2203cf961e16SLiad Kaufman "Error reconfiguring TXQ #%d\n", queue); 2204cf961e16SLiad Kaufman return ret; 2205cf961e16SLiad Kaufman } 2206cf961e16SLiad Kaufman } 2207cf961e16SLiad Kaufman } 2208cf961e16SLiad Kaufman 2209cf961e16SLiad Kaufman if (alloc_queue) 2210cf961e16SLiad Kaufman iwl_mvm_enable_txq(mvm, queue, 2211cf961e16SLiad Kaufman vif->hw_queue[tid_to_mac80211_ac[tid]], ssn, 2212cf961e16SLiad Kaufman &cfg, wdg_timeout); 2213e705c121SKalle Valo 22149f9af3d7SLiad Kaufman /* Send ADD_STA command to enable aggs only if the queue isn't shared */ 22159f9af3d7SLiad Kaufman if (queue_status != IWL_MVM_QUEUE_SHARED) { 2216e705c121SKalle Valo ret = iwl_mvm_sta_tx_agg(mvm, sta, tid, queue, true); 2217e705c121SKalle Valo if (ret) 2218e705c121SKalle Valo return -EIO; 22199f9af3d7SLiad Kaufman } 2220e705c121SKalle Valo 2221e705c121SKalle Valo /* No need to mark as reserved */ 2222e705c121SKalle Valo spin_lock_bh(&mvm->queue_info_lock); 2223cf961e16SLiad Kaufman mvm->queue_info[queue].status = IWL_MVM_QUEUE_READY; 2224e705c121SKalle Valo spin_unlock_bh(&mvm->queue_info_lock); 2225e705c121SKalle Valo 2226e705c121SKalle Valo /* 2227e705c121SKalle Valo * Even though in theory the peer could have different 2228e705c121SKalle Valo * aggregation reorder buffer sizes for different sessions, 2229e705c121SKalle Valo * our ucode doesn't allow for that and has a global limit 2230e705c121SKalle Valo * for each station. Therefore, use the minimum of all the 2231e705c121SKalle Valo * aggregation sessions and our default value. 2232e705c121SKalle Valo */ 2233e705c121SKalle Valo mvmsta->max_agg_bufsize = 2234e705c121SKalle Valo min(mvmsta->max_agg_bufsize, buf_size); 2235e705c121SKalle Valo mvmsta->lq_sta.lq.agg_frame_cnt_limit = mvmsta->max_agg_bufsize; 2236e705c121SKalle Valo 2237e705c121SKalle Valo IWL_DEBUG_HT(mvm, "Tx aggregation enabled on ra = %pM tid = %d\n", 2238e705c121SKalle Valo sta->addr, tid); 2239e705c121SKalle Valo 2240e705c121SKalle Valo return iwl_mvm_send_lq_cmd(mvm, &mvmsta->lq_sta.lq, false); 2241e705c121SKalle Valo } 2242e705c121SKalle Valo 2243e705c121SKalle Valo int iwl_mvm_sta_tx_agg_stop(struct iwl_mvm *mvm, struct ieee80211_vif *vif, 2244e705c121SKalle Valo struct ieee80211_sta *sta, u16 tid) 2245e705c121SKalle Valo { 2246e705c121SKalle Valo struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta); 2247e705c121SKalle Valo struct iwl_mvm_tid_data *tid_data = &mvmsta->tid_data[tid]; 2248e705c121SKalle Valo u16 txq_id; 2249e705c121SKalle Valo int err; 2250e705c121SKalle Valo 2251e705c121SKalle Valo /* 2252e705c121SKalle Valo * If mac80211 is cleaning its state, then say that we finished since 2253e705c121SKalle Valo * our state has been cleared anyway. 2254e705c121SKalle Valo */ 2255e705c121SKalle Valo if (test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status)) { 2256e705c121SKalle Valo ieee80211_stop_tx_ba_cb_irqsafe(vif, sta->addr, tid); 2257e705c121SKalle Valo return 0; 2258e705c121SKalle Valo } 2259e705c121SKalle Valo 2260e705c121SKalle Valo spin_lock_bh(&mvmsta->lock); 2261e705c121SKalle Valo 2262e705c121SKalle Valo txq_id = tid_data->txq_id; 2263e705c121SKalle Valo 2264e705c121SKalle Valo IWL_DEBUG_TX_QUEUES(mvm, "Stop AGG: sta %d tid %d q %d state %d\n", 2265e705c121SKalle Valo mvmsta->sta_id, tid, txq_id, tid_data->state); 2266e705c121SKalle Valo 2267e705c121SKalle Valo mvmsta->agg_tids &= ~BIT(tid); 2268e705c121SKalle Valo 2269e705c121SKalle Valo spin_lock_bh(&mvm->queue_info_lock); 2270cf961e16SLiad Kaufman /* 2271cf961e16SLiad Kaufman * The TXQ is marked as reserved only if no traffic came through yet 2272cf961e16SLiad Kaufman * This means no traffic has been sent on this TID (agg'd or not), so 2273cf961e16SLiad Kaufman * we no longer have use for the queue. Since it hasn't even been 2274cf961e16SLiad Kaufman * allocated through iwl_mvm_enable_txq, so we can just mark it back as 2275cf961e16SLiad Kaufman * free. 2276cf961e16SLiad Kaufman */ 2277cf961e16SLiad Kaufman if (mvm->queue_info[txq_id].status == IWL_MVM_QUEUE_RESERVED) 2278cf961e16SLiad Kaufman mvm->queue_info[txq_id].status = IWL_MVM_QUEUE_FREE; 22799f9af3d7SLiad Kaufman 2280e705c121SKalle Valo spin_unlock_bh(&mvm->queue_info_lock); 2281e705c121SKalle Valo 2282e705c121SKalle Valo switch (tid_data->state) { 2283e705c121SKalle Valo case IWL_AGG_ON: 2284e705c121SKalle Valo tid_data->ssn = IEEE80211_SEQ_TO_SN(tid_data->seq_number); 2285e705c121SKalle Valo 2286e705c121SKalle Valo IWL_DEBUG_TX_QUEUES(mvm, 2287e705c121SKalle Valo "ssn = %d, next_recl = %d\n", 2288e705c121SKalle Valo tid_data->ssn, tid_data->next_reclaimed); 2289e705c121SKalle Valo 2290e705c121SKalle Valo /* There are still packets for this RA / TID in the HW */ 2291e705c121SKalle Valo if (tid_data->ssn != tid_data->next_reclaimed) { 2292e705c121SKalle Valo tid_data->state = IWL_EMPTYING_HW_QUEUE_DELBA; 2293e705c121SKalle Valo err = 0; 2294e705c121SKalle Valo break; 2295e705c121SKalle Valo } 2296e705c121SKalle Valo 2297e705c121SKalle Valo tid_data->ssn = 0xffff; 2298e705c121SKalle Valo tid_data->state = IWL_AGG_OFF; 2299e705c121SKalle Valo spin_unlock_bh(&mvmsta->lock); 2300e705c121SKalle Valo 2301e705c121SKalle Valo ieee80211_stop_tx_ba_cb_irqsafe(vif, sta->addr, tid); 2302e705c121SKalle Valo 2303e705c121SKalle Valo iwl_mvm_sta_tx_agg(mvm, sta, tid, txq_id, false); 2304e705c121SKalle Valo 2305cf961e16SLiad Kaufman if (!iwl_mvm_is_dqa_supported(mvm)) { 2306cf961e16SLiad Kaufman int mac_queue = vif->hw_queue[tid_to_mac80211_ac[tid]]; 2307cf961e16SLiad Kaufman 2308cf961e16SLiad Kaufman iwl_mvm_disable_txq(mvm, txq_id, mac_queue, tid, 0); 2309cf961e16SLiad Kaufman } 2310e705c121SKalle Valo return 0; 2311e705c121SKalle Valo case IWL_AGG_STARTING: 2312e705c121SKalle Valo case IWL_EMPTYING_HW_QUEUE_ADDBA: 2313e705c121SKalle Valo /* 2314e705c121SKalle Valo * The agg session has been stopped before it was set up. This 2315e705c121SKalle Valo * can happen when the AddBA timer times out for example. 2316e705c121SKalle Valo */ 2317e705c121SKalle Valo 2318e705c121SKalle Valo /* No barriers since we are under mutex */ 2319e705c121SKalle Valo lockdep_assert_held(&mvm->mutex); 2320e705c121SKalle Valo 2321e705c121SKalle Valo ieee80211_stop_tx_ba_cb_irqsafe(vif, sta->addr, tid); 2322e705c121SKalle Valo tid_data->state = IWL_AGG_OFF; 2323e705c121SKalle Valo err = 0; 2324e705c121SKalle Valo break; 2325e705c121SKalle Valo default: 2326e705c121SKalle Valo IWL_ERR(mvm, 2327e705c121SKalle Valo "Stopping AGG while state not ON or starting for %d on %d (%d)\n", 2328e705c121SKalle Valo mvmsta->sta_id, tid, tid_data->state); 2329e705c121SKalle Valo IWL_ERR(mvm, 2330e705c121SKalle Valo "\ttid_data->txq_id = %d\n", tid_data->txq_id); 2331e705c121SKalle Valo err = -EINVAL; 2332e705c121SKalle Valo } 2333e705c121SKalle Valo 2334e705c121SKalle Valo spin_unlock_bh(&mvmsta->lock); 2335e705c121SKalle Valo 2336e705c121SKalle Valo return err; 2337e705c121SKalle Valo } 2338e705c121SKalle Valo 2339e705c121SKalle Valo int iwl_mvm_sta_tx_agg_flush(struct iwl_mvm *mvm, struct ieee80211_vif *vif, 2340e705c121SKalle Valo struct ieee80211_sta *sta, u16 tid) 2341e705c121SKalle Valo { 2342e705c121SKalle Valo struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta); 2343e705c121SKalle Valo struct iwl_mvm_tid_data *tid_data = &mvmsta->tid_data[tid]; 2344e705c121SKalle Valo u16 txq_id; 2345e705c121SKalle Valo enum iwl_mvm_agg_state old_state; 2346e705c121SKalle Valo 2347e705c121SKalle Valo /* 2348e705c121SKalle Valo * First set the agg state to OFF to avoid calling 2349e705c121SKalle Valo * ieee80211_stop_tx_ba_cb in iwl_mvm_check_ratid_empty. 2350e705c121SKalle Valo */ 2351e705c121SKalle Valo spin_lock_bh(&mvmsta->lock); 2352e705c121SKalle Valo txq_id = tid_data->txq_id; 2353e705c121SKalle Valo IWL_DEBUG_TX_QUEUES(mvm, "Flush AGG: sta %d tid %d q %d state %d\n", 2354e705c121SKalle Valo mvmsta->sta_id, tid, txq_id, tid_data->state); 2355e705c121SKalle Valo old_state = tid_data->state; 2356e705c121SKalle Valo tid_data->state = IWL_AGG_OFF; 2357e705c121SKalle Valo mvmsta->agg_tids &= ~BIT(tid); 2358e705c121SKalle Valo spin_unlock_bh(&mvmsta->lock); 2359e705c121SKalle Valo 2360e705c121SKalle Valo spin_lock_bh(&mvm->queue_info_lock); 2361cf961e16SLiad Kaufman /* 2362cf961e16SLiad Kaufman * The TXQ is marked as reserved only if no traffic came through yet 2363cf961e16SLiad Kaufman * This means no traffic has been sent on this TID (agg'd or not), so 2364cf961e16SLiad Kaufman * we no longer have use for the queue. Since it hasn't even been 2365cf961e16SLiad Kaufman * allocated through iwl_mvm_enable_txq, so we can just mark it back as 2366cf961e16SLiad Kaufman * free. 2367cf961e16SLiad Kaufman */ 2368cf961e16SLiad Kaufman if (mvm->queue_info[txq_id].status == IWL_MVM_QUEUE_RESERVED) 2369cf961e16SLiad Kaufman mvm->queue_info[txq_id].status = IWL_MVM_QUEUE_FREE; 2370e705c121SKalle Valo spin_unlock_bh(&mvm->queue_info_lock); 2371e705c121SKalle Valo 2372e705c121SKalle Valo if (old_state >= IWL_AGG_ON) { 2373e705c121SKalle Valo iwl_mvm_drain_sta(mvm, mvmsta, true); 2374e705c121SKalle Valo if (iwl_mvm_flush_tx_path(mvm, BIT(txq_id), 0)) 2375e705c121SKalle Valo IWL_ERR(mvm, "Couldn't flush the AGG queue\n"); 2376e705c121SKalle Valo iwl_trans_wait_tx_queue_empty(mvm->trans, 2377e705c121SKalle Valo mvmsta->tfd_queue_msk); 2378e705c121SKalle Valo iwl_mvm_drain_sta(mvm, mvmsta, false); 2379e705c121SKalle Valo 2380e705c121SKalle Valo iwl_mvm_sta_tx_agg(mvm, sta, tid, txq_id, false); 2381e705c121SKalle Valo 2382cf961e16SLiad Kaufman if (!iwl_mvm_is_dqa_supported(mvm)) { 2383cf961e16SLiad Kaufman int mac_queue = vif->hw_queue[tid_to_mac80211_ac[tid]]; 2384cf961e16SLiad Kaufman 2385cf961e16SLiad Kaufman iwl_mvm_disable_txq(mvm, tid_data->txq_id, mac_queue, 2386cf961e16SLiad Kaufman tid, 0); 2387cf961e16SLiad Kaufman } 2388e705c121SKalle Valo } 2389e705c121SKalle Valo 2390e705c121SKalle Valo return 0; 2391e705c121SKalle Valo } 2392e705c121SKalle Valo 2393e705c121SKalle Valo static int iwl_mvm_set_fw_key_idx(struct iwl_mvm *mvm) 2394e705c121SKalle Valo { 2395e705c121SKalle Valo int i, max = -1, max_offs = -1; 2396e705c121SKalle Valo 2397e705c121SKalle Valo lockdep_assert_held(&mvm->mutex); 2398e705c121SKalle Valo 2399e705c121SKalle Valo /* Pick the unused key offset with the highest 'deleted' 2400e705c121SKalle Valo * counter. Every time a key is deleted, all the counters 2401e705c121SKalle Valo * are incremented and the one that was just deleted is 2402e705c121SKalle Valo * reset to zero. Thus, the highest counter is the one 2403e705c121SKalle Valo * that was deleted longest ago. Pick that one. 2404e705c121SKalle Valo */ 2405e705c121SKalle Valo for (i = 0; i < STA_KEY_MAX_NUM; i++) { 2406e705c121SKalle Valo if (test_bit(i, mvm->fw_key_table)) 2407e705c121SKalle Valo continue; 2408e705c121SKalle Valo if (mvm->fw_key_deleted[i] > max) { 2409e705c121SKalle Valo max = mvm->fw_key_deleted[i]; 2410e705c121SKalle Valo max_offs = i; 2411e705c121SKalle Valo } 2412e705c121SKalle Valo } 2413e705c121SKalle Valo 2414e705c121SKalle Valo if (max_offs < 0) 2415e705c121SKalle Valo return STA_KEY_IDX_INVALID; 2416e705c121SKalle Valo 2417e705c121SKalle Valo return max_offs; 2418e705c121SKalle Valo } 2419e705c121SKalle Valo 24205f7a1847SJohannes Berg static struct iwl_mvm_sta *iwl_mvm_get_key_sta(struct iwl_mvm *mvm, 24214615fd15SEmmanuel Grumbach struct ieee80211_vif *vif, 2422e705c121SKalle Valo struct ieee80211_sta *sta) 2423e705c121SKalle Valo { 2424e705c121SKalle Valo struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 2425e705c121SKalle Valo 24265f7a1847SJohannes Berg if (sta) 24275f7a1847SJohannes Berg return iwl_mvm_sta_from_mac80211(sta); 2428e705c121SKalle Valo 2429e705c121SKalle Valo /* 2430e705c121SKalle Valo * The device expects GTKs for station interfaces to be 2431e705c121SKalle Valo * installed as GTKs for the AP station. If we have no 2432e705c121SKalle Valo * station ID, then use AP's station ID. 2433e705c121SKalle Valo */ 2434e705c121SKalle Valo if (vif->type == NL80211_IFTYPE_STATION && 24354615fd15SEmmanuel Grumbach mvmvif->ap_sta_id != IWL_MVM_STATION_COUNT) { 24364615fd15SEmmanuel Grumbach u8 sta_id = mvmvif->ap_sta_id; 24374615fd15SEmmanuel Grumbach 24387d6a1ab6SEmmanuel Grumbach sta = rcu_dereference_check(mvm->fw_id_to_mac_id[sta_id], 24397d6a1ab6SEmmanuel Grumbach lockdep_is_held(&mvm->mutex)); 24407d6a1ab6SEmmanuel Grumbach 24414615fd15SEmmanuel Grumbach /* 24424615fd15SEmmanuel Grumbach * It is possible that the 'sta' parameter is NULL, 24434615fd15SEmmanuel Grumbach * for example when a GTK is removed - the sta_id will then 24444615fd15SEmmanuel Grumbach * be the AP ID, and no station was passed by mac80211. 24454615fd15SEmmanuel Grumbach */ 24467d6a1ab6SEmmanuel Grumbach if (IS_ERR_OR_NULL(sta)) 24477d6a1ab6SEmmanuel Grumbach return NULL; 24487d6a1ab6SEmmanuel Grumbach 24497d6a1ab6SEmmanuel Grumbach return iwl_mvm_sta_from_mac80211(sta); 24504615fd15SEmmanuel Grumbach } 2451e705c121SKalle Valo 24525f7a1847SJohannes Berg return NULL; 2453e705c121SKalle Valo } 2454e705c121SKalle Valo 2455e705c121SKalle Valo static int iwl_mvm_send_sta_key(struct iwl_mvm *mvm, 2456e705c121SKalle Valo struct iwl_mvm_sta *mvm_sta, 2457e705c121SKalle Valo struct ieee80211_key_conf *keyconf, bool mcast, 24584615fd15SEmmanuel Grumbach u32 tkip_iv32, u16 *tkip_p1k, u32 cmd_flags, 24594615fd15SEmmanuel Grumbach u8 key_offset) 2460e705c121SKalle Valo { 2461e705c121SKalle Valo struct iwl_mvm_add_sta_key_cmd cmd = {}; 2462e705c121SKalle Valo __le16 key_flags; 2463e705c121SKalle Valo int ret; 2464e705c121SKalle Valo u32 status; 2465e705c121SKalle Valo u16 keyidx; 2466e705c121SKalle Valo int i; 2467e705c121SKalle Valo u8 sta_id = mvm_sta->sta_id; 2468e705c121SKalle Valo 2469e705c121SKalle Valo keyidx = (keyconf->keyidx << STA_KEY_FLG_KEYID_POS) & 2470e705c121SKalle Valo STA_KEY_FLG_KEYID_MSK; 2471e705c121SKalle Valo key_flags = cpu_to_le16(keyidx); 2472e705c121SKalle Valo key_flags |= cpu_to_le16(STA_KEY_FLG_WEP_KEY_MAP); 2473e705c121SKalle Valo 2474e705c121SKalle Valo switch (keyconf->cipher) { 2475e705c121SKalle Valo case WLAN_CIPHER_SUITE_TKIP: 2476e705c121SKalle Valo key_flags |= cpu_to_le16(STA_KEY_FLG_TKIP); 2477e705c121SKalle Valo cmd.tkip_rx_tsc_byte2 = tkip_iv32; 2478e705c121SKalle Valo for (i = 0; i < 5; i++) 2479e705c121SKalle Valo cmd.tkip_rx_ttak[i] = cpu_to_le16(tkip_p1k[i]); 2480e705c121SKalle Valo memcpy(cmd.key, keyconf->key, keyconf->keylen); 2481e705c121SKalle Valo break; 2482e705c121SKalle Valo case WLAN_CIPHER_SUITE_CCMP: 2483e705c121SKalle Valo key_flags |= cpu_to_le16(STA_KEY_FLG_CCM); 2484e705c121SKalle Valo memcpy(cmd.key, keyconf->key, keyconf->keylen); 2485e705c121SKalle Valo break; 2486e705c121SKalle Valo case WLAN_CIPHER_SUITE_WEP104: 2487e705c121SKalle Valo key_flags |= cpu_to_le16(STA_KEY_FLG_WEP_13BYTES); 2488e705c121SKalle Valo /* fall through */ 2489e705c121SKalle Valo case WLAN_CIPHER_SUITE_WEP40: 2490e705c121SKalle Valo key_flags |= cpu_to_le16(STA_KEY_FLG_WEP); 2491e705c121SKalle Valo memcpy(cmd.key + 3, keyconf->key, keyconf->keylen); 2492e705c121SKalle Valo break; 24932a53d166SAyala Beker case WLAN_CIPHER_SUITE_GCMP_256: 24942a53d166SAyala Beker key_flags |= cpu_to_le16(STA_KEY_FLG_KEY_32BYTES); 24952a53d166SAyala Beker /* fall through */ 24962a53d166SAyala Beker case WLAN_CIPHER_SUITE_GCMP: 24972a53d166SAyala Beker key_flags |= cpu_to_le16(STA_KEY_FLG_GCMP); 24982a53d166SAyala Beker memcpy(cmd.key, keyconf->key, keyconf->keylen); 24992a53d166SAyala Beker break; 2500e705c121SKalle Valo default: 2501e705c121SKalle Valo key_flags |= cpu_to_le16(STA_KEY_FLG_EXT); 2502e705c121SKalle Valo memcpy(cmd.key, keyconf->key, keyconf->keylen); 2503e705c121SKalle Valo } 2504e705c121SKalle Valo 2505e705c121SKalle Valo if (mcast) 2506e705c121SKalle Valo key_flags |= cpu_to_le16(STA_KEY_MULTICAST); 2507e705c121SKalle Valo 25084615fd15SEmmanuel Grumbach cmd.key_offset = key_offset; 2509e705c121SKalle Valo cmd.key_flags = key_flags; 2510e705c121SKalle Valo cmd.sta_id = sta_id; 2511e705c121SKalle Valo 2512e705c121SKalle Valo status = ADD_STA_SUCCESS; 2513e705c121SKalle Valo if (cmd_flags & CMD_ASYNC) 2514e705c121SKalle Valo ret = iwl_mvm_send_cmd_pdu(mvm, ADD_STA_KEY, CMD_ASYNC, 2515e705c121SKalle Valo sizeof(cmd), &cmd); 2516e705c121SKalle Valo else 2517e705c121SKalle Valo ret = iwl_mvm_send_cmd_pdu_status(mvm, ADD_STA_KEY, sizeof(cmd), 2518e705c121SKalle Valo &cmd, &status); 2519e705c121SKalle Valo 2520e705c121SKalle Valo switch (status) { 2521e705c121SKalle Valo case ADD_STA_SUCCESS: 2522e705c121SKalle Valo IWL_DEBUG_WEP(mvm, "MODIFY_STA: set dynamic key passed\n"); 2523e705c121SKalle Valo break; 2524e705c121SKalle Valo default: 2525e705c121SKalle Valo ret = -EIO; 2526e705c121SKalle Valo IWL_ERR(mvm, "MODIFY_STA: set dynamic key failed\n"); 2527e705c121SKalle Valo break; 2528e705c121SKalle Valo } 2529e705c121SKalle Valo 2530e705c121SKalle Valo return ret; 2531e705c121SKalle Valo } 2532e705c121SKalle Valo 2533e705c121SKalle Valo static int iwl_mvm_send_sta_igtk(struct iwl_mvm *mvm, 2534e705c121SKalle Valo struct ieee80211_key_conf *keyconf, 2535e705c121SKalle Valo u8 sta_id, bool remove_key) 2536e705c121SKalle Valo { 2537e705c121SKalle Valo struct iwl_mvm_mgmt_mcast_key_cmd igtk_cmd = {}; 2538e705c121SKalle Valo 2539e705c121SKalle Valo /* verify the key details match the required command's expectations */ 25408e160ab8SAyala Beker if (WARN_ON((keyconf->flags & IEEE80211_KEY_FLAG_PAIRWISE) || 25418e160ab8SAyala Beker (keyconf->keyidx != 4 && keyconf->keyidx != 5) || 25428e160ab8SAyala Beker (keyconf->cipher != WLAN_CIPHER_SUITE_AES_CMAC && 25438e160ab8SAyala Beker keyconf->cipher != WLAN_CIPHER_SUITE_BIP_GMAC_128 && 25448e160ab8SAyala Beker keyconf->cipher != WLAN_CIPHER_SUITE_BIP_GMAC_256))) 25458e160ab8SAyala Beker return -EINVAL; 25468e160ab8SAyala Beker 25478e160ab8SAyala Beker if (WARN_ON(!iwl_mvm_has_new_rx_api(mvm) && 25488e160ab8SAyala Beker keyconf->cipher != WLAN_CIPHER_SUITE_AES_CMAC)) 2549e705c121SKalle Valo return -EINVAL; 2550e705c121SKalle Valo 2551e705c121SKalle Valo igtk_cmd.key_id = cpu_to_le32(keyconf->keyidx); 2552e705c121SKalle Valo igtk_cmd.sta_id = cpu_to_le32(sta_id); 2553e705c121SKalle Valo 2554e705c121SKalle Valo if (remove_key) { 2555e705c121SKalle Valo igtk_cmd.ctrl_flags |= cpu_to_le32(STA_KEY_NOT_VALID); 2556e705c121SKalle Valo } else { 2557e705c121SKalle Valo struct ieee80211_key_seq seq; 2558e705c121SKalle Valo const u8 *pn; 2559e705c121SKalle Valo 2560aa950524SAyala Beker switch (keyconf->cipher) { 2561aa950524SAyala Beker case WLAN_CIPHER_SUITE_AES_CMAC: 2562aa950524SAyala Beker igtk_cmd.ctrl_flags |= cpu_to_le32(STA_KEY_FLG_CCM); 2563aa950524SAyala Beker break; 25648e160ab8SAyala Beker case WLAN_CIPHER_SUITE_BIP_GMAC_128: 25658e160ab8SAyala Beker case WLAN_CIPHER_SUITE_BIP_GMAC_256: 25668e160ab8SAyala Beker igtk_cmd.ctrl_flags |= cpu_to_le32(STA_KEY_FLG_GCMP); 25678e160ab8SAyala Beker break; 2568aa950524SAyala Beker default: 2569aa950524SAyala Beker return -EINVAL; 2570aa950524SAyala Beker } 2571aa950524SAyala Beker 25728e160ab8SAyala Beker memcpy(igtk_cmd.igtk, keyconf->key, keyconf->keylen); 25738e160ab8SAyala Beker if (keyconf->cipher == WLAN_CIPHER_SUITE_BIP_GMAC_256) 25748e160ab8SAyala Beker igtk_cmd.ctrl_flags |= 25758e160ab8SAyala Beker cpu_to_le32(STA_KEY_FLG_KEY_32BYTES); 2576e705c121SKalle Valo ieee80211_get_key_rx_seq(keyconf, 0, &seq); 2577e705c121SKalle Valo pn = seq.aes_cmac.pn; 2578e705c121SKalle Valo igtk_cmd.receive_seq_cnt = cpu_to_le64(((u64) pn[5] << 0) | 2579e705c121SKalle Valo ((u64) pn[4] << 8) | 2580e705c121SKalle Valo ((u64) pn[3] << 16) | 2581e705c121SKalle Valo ((u64) pn[2] << 24) | 2582e705c121SKalle Valo ((u64) pn[1] << 32) | 2583e705c121SKalle Valo ((u64) pn[0] << 40)); 2584e705c121SKalle Valo } 2585e705c121SKalle Valo 2586e705c121SKalle Valo IWL_DEBUG_INFO(mvm, "%s igtk for sta %u\n", 2587e705c121SKalle Valo remove_key ? "removing" : "installing", 2588e705c121SKalle Valo igtk_cmd.sta_id); 2589e705c121SKalle Valo 25908e160ab8SAyala Beker if (!iwl_mvm_has_new_rx_api(mvm)) { 25918e160ab8SAyala Beker struct iwl_mvm_mgmt_mcast_key_cmd_v1 igtk_cmd_v1 = { 25928e160ab8SAyala Beker .ctrl_flags = igtk_cmd.ctrl_flags, 25938e160ab8SAyala Beker .key_id = igtk_cmd.key_id, 25948e160ab8SAyala Beker .sta_id = igtk_cmd.sta_id, 25958e160ab8SAyala Beker .receive_seq_cnt = igtk_cmd.receive_seq_cnt 25968e160ab8SAyala Beker }; 25978e160ab8SAyala Beker 25988e160ab8SAyala Beker memcpy(igtk_cmd_v1.igtk, igtk_cmd.igtk, 25998e160ab8SAyala Beker ARRAY_SIZE(igtk_cmd_v1.igtk)); 26008e160ab8SAyala Beker return iwl_mvm_send_cmd_pdu(mvm, MGMT_MCAST_KEY, 0, 26018e160ab8SAyala Beker sizeof(igtk_cmd_v1), &igtk_cmd_v1); 26028e160ab8SAyala Beker } 2603e705c121SKalle Valo return iwl_mvm_send_cmd_pdu(mvm, MGMT_MCAST_KEY, 0, 2604e705c121SKalle Valo sizeof(igtk_cmd), &igtk_cmd); 2605e705c121SKalle Valo } 2606e705c121SKalle Valo 2607e705c121SKalle Valo 2608e705c121SKalle Valo static inline u8 *iwl_mvm_get_mac_addr(struct iwl_mvm *mvm, 2609e705c121SKalle Valo struct ieee80211_vif *vif, 2610e705c121SKalle Valo struct ieee80211_sta *sta) 2611e705c121SKalle Valo { 2612e705c121SKalle Valo struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 2613e705c121SKalle Valo 2614e705c121SKalle Valo if (sta) 2615e705c121SKalle Valo return sta->addr; 2616e705c121SKalle Valo 2617e705c121SKalle Valo if (vif->type == NL80211_IFTYPE_STATION && 2618e705c121SKalle Valo mvmvif->ap_sta_id != IWL_MVM_STATION_COUNT) { 2619e705c121SKalle Valo u8 sta_id = mvmvif->ap_sta_id; 2620e705c121SKalle Valo sta = rcu_dereference_protected(mvm->fw_id_to_mac_id[sta_id], 2621e705c121SKalle Valo lockdep_is_held(&mvm->mutex)); 2622e705c121SKalle Valo return sta->addr; 2623e705c121SKalle Valo } 2624e705c121SKalle Valo 2625e705c121SKalle Valo 2626e705c121SKalle Valo return NULL; 2627e705c121SKalle Valo } 2628e705c121SKalle Valo 2629e705c121SKalle Valo static int __iwl_mvm_set_sta_key(struct iwl_mvm *mvm, 2630e705c121SKalle Valo struct ieee80211_vif *vif, 2631e705c121SKalle Valo struct ieee80211_sta *sta, 2632e705c121SKalle Valo struct ieee80211_key_conf *keyconf, 26334615fd15SEmmanuel Grumbach u8 key_offset, 2634e705c121SKalle Valo bool mcast) 2635e705c121SKalle Valo { 2636e705c121SKalle Valo struct iwl_mvm_sta *mvm_sta = iwl_mvm_sta_from_mac80211(sta); 2637e705c121SKalle Valo int ret; 2638e705c121SKalle Valo const u8 *addr; 2639e705c121SKalle Valo struct ieee80211_key_seq seq; 2640e705c121SKalle Valo u16 p1k[5]; 2641e705c121SKalle Valo 2642e705c121SKalle Valo switch (keyconf->cipher) { 2643e705c121SKalle Valo case WLAN_CIPHER_SUITE_TKIP: 2644e705c121SKalle Valo addr = iwl_mvm_get_mac_addr(mvm, vif, sta); 2645e705c121SKalle Valo /* get phase 1 key from mac80211 */ 2646e705c121SKalle Valo ieee80211_get_key_rx_seq(keyconf, 0, &seq); 2647e705c121SKalle Valo ieee80211_get_tkip_rx_p1k(keyconf, addr, seq.tkip.iv32, p1k); 2648e705c121SKalle Valo ret = iwl_mvm_send_sta_key(mvm, mvm_sta, keyconf, mcast, 26494615fd15SEmmanuel Grumbach seq.tkip.iv32, p1k, 0, key_offset); 2650e705c121SKalle Valo break; 2651e705c121SKalle Valo case WLAN_CIPHER_SUITE_CCMP: 2652e705c121SKalle Valo case WLAN_CIPHER_SUITE_WEP40: 2653e705c121SKalle Valo case WLAN_CIPHER_SUITE_WEP104: 26542a53d166SAyala Beker case WLAN_CIPHER_SUITE_GCMP: 26552a53d166SAyala Beker case WLAN_CIPHER_SUITE_GCMP_256: 2656e705c121SKalle Valo ret = iwl_mvm_send_sta_key(mvm, mvm_sta, keyconf, mcast, 26574615fd15SEmmanuel Grumbach 0, NULL, 0, key_offset); 2658e705c121SKalle Valo break; 2659e705c121SKalle Valo default: 2660e705c121SKalle Valo ret = iwl_mvm_send_sta_key(mvm, mvm_sta, keyconf, mcast, 26614615fd15SEmmanuel Grumbach 0, NULL, 0, key_offset); 2662e705c121SKalle Valo } 2663e705c121SKalle Valo 2664e705c121SKalle Valo return ret; 2665e705c121SKalle Valo } 2666e705c121SKalle Valo 2667e705c121SKalle Valo static int __iwl_mvm_remove_sta_key(struct iwl_mvm *mvm, u8 sta_id, 2668e705c121SKalle Valo struct ieee80211_key_conf *keyconf, 2669e705c121SKalle Valo bool mcast) 2670e705c121SKalle Valo { 2671e705c121SKalle Valo struct iwl_mvm_add_sta_key_cmd cmd = {}; 2672e705c121SKalle Valo __le16 key_flags; 2673e705c121SKalle Valo int ret; 2674e705c121SKalle Valo u32 status; 2675e705c121SKalle Valo 2676e705c121SKalle Valo key_flags = cpu_to_le16((keyconf->keyidx << STA_KEY_FLG_KEYID_POS) & 2677e705c121SKalle Valo STA_KEY_FLG_KEYID_MSK); 2678e705c121SKalle Valo key_flags |= cpu_to_le16(STA_KEY_FLG_NO_ENC | STA_KEY_FLG_WEP_KEY_MAP); 2679e705c121SKalle Valo key_flags |= cpu_to_le16(STA_KEY_NOT_VALID); 2680e705c121SKalle Valo 2681e705c121SKalle Valo if (mcast) 2682e705c121SKalle Valo key_flags |= cpu_to_le16(STA_KEY_MULTICAST); 2683e705c121SKalle Valo 2684e705c121SKalle Valo cmd.key_flags = key_flags; 2685e705c121SKalle Valo cmd.key_offset = keyconf->hw_key_idx; 2686e705c121SKalle Valo cmd.sta_id = sta_id; 2687e705c121SKalle Valo 2688e705c121SKalle Valo status = ADD_STA_SUCCESS; 2689e705c121SKalle Valo ret = iwl_mvm_send_cmd_pdu_status(mvm, ADD_STA_KEY, sizeof(cmd), 2690e705c121SKalle Valo &cmd, &status); 2691e705c121SKalle Valo 2692e705c121SKalle Valo switch (status) { 2693e705c121SKalle Valo case ADD_STA_SUCCESS: 2694e705c121SKalle Valo IWL_DEBUG_WEP(mvm, "MODIFY_STA: remove sta key passed\n"); 2695e705c121SKalle Valo break; 2696e705c121SKalle Valo default: 2697e705c121SKalle Valo ret = -EIO; 2698e705c121SKalle Valo IWL_ERR(mvm, "MODIFY_STA: remove sta key failed\n"); 2699e705c121SKalle Valo break; 2700e705c121SKalle Valo } 2701e705c121SKalle Valo 2702e705c121SKalle Valo return ret; 2703e705c121SKalle Valo } 2704e705c121SKalle Valo 2705e705c121SKalle Valo int iwl_mvm_set_sta_key(struct iwl_mvm *mvm, 2706e705c121SKalle Valo struct ieee80211_vif *vif, 2707e705c121SKalle Valo struct ieee80211_sta *sta, 2708e705c121SKalle Valo struct ieee80211_key_conf *keyconf, 27094615fd15SEmmanuel Grumbach u8 key_offset) 2710e705c121SKalle Valo { 2711e705c121SKalle Valo bool mcast = !(keyconf->flags & IEEE80211_KEY_FLAG_PAIRWISE); 27125f7a1847SJohannes Berg struct iwl_mvm_sta *mvm_sta; 2713e705c121SKalle Valo u8 sta_id; 2714e705c121SKalle Valo int ret; 2715e705c121SKalle Valo static const u8 __maybe_unused zero_addr[ETH_ALEN] = {0}; 2716e705c121SKalle Valo 2717e705c121SKalle Valo lockdep_assert_held(&mvm->mutex); 2718e705c121SKalle Valo 2719e705c121SKalle Valo /* Get the station id from the mvm local station table */ 27205f7a1847SJohannes Berg mvm_sta = iwl_mvm_get_key_sta(mvm, vif, sta); 27215f7a1847SJohannes Berg if (!mvm_sta) { 27225f7a1847SJohannes Berg IWL_ERR(mvm, "Failed to find station\n"); 2723e705c121SKalle Valo return -EINVAL; 2724e705c121SKalle Valo } 27255f7a1847SJohannes Berg sta_id = mvm_sta->sta_id; 2726e705c121SKalle Valo 27278e160ab8SAyala Beker if (keyconf->cipher == WLAN_CIPHER_SUITE_AES_CMAC || 27288e160ab8SAyala Beker keyconf->cipher == WLAN_CIPHER_SUITE_BIP_GMAC_128 || 27298e160ab8SAyala Beker keyconf->cipher == WLAN_CIPHER_SUITE_BIP_GMAC_256) { 2730e705c121SKalle Valo ret = iwl_mvm_send_sta_igtk(mvm, keyconf, sta_id, false); 2731e705c121SKalle Valo goto end; 2732e705c121SKalle Valo } 2733e705c121SKalle Valo 2734e705c121SKalle Valo /* 2735e705c121SKalle Valo * It is possible that the 'sta' parameter is NULL, and thus 2736e705c121SKalle Valo * there is a need to retrieve the sta from the local station table. 2737e705c121SKalle Valo */ 2738e705c121SKalle Valo if (!sta) { 2739e705c121SKalle Valo sta = rcu_dereference_protected(mvm->fw_id_to_mac_id[sta_id], 2740e705c121SKalle Valo lockdep_is_held(&mvm->mutex)); 2741e705c121SKalle Valo if (IS_ERR_OR_NULL(sta)) { 2742e705c121SKalle Valo IWL_ERR(mvm, "Invalid station id\n"); 2743e705c121SKalle Valo return -EINVAL; 2744e705c121SKalle Valo } 2745e705c121SKalle Valo } 2746e705c121SKalle Valo 2747e705c121SKalle Valo if (WARN_ON_ONCE(iwl_mvm_sta_from_mac80211(sta)->vif != vif)) 2748e705c121SKalle Valo return -EINVAL; 2749e705c121SKalle Valo 27504615fd15SEmmanuel Grumbach /* If the key_offset is not pre-assigned, we need to find a 27514615fd15SEmmanuel Grumbach * new offset to use. In normal cases, the offset is not 27524615fd15SEmmanuel Grumbach * pre-assigned, but during HW_RESTART we want to reuse the 27534615fd15SEmmanuel Grumbach * same indices, so we pass them when this function is called. 27544615fd15SEmmanuel Grumbach * 27554615fd15SEmmanuel Grumbach * In D3 entry, we need to hardcoded the indices (because the 27564615fd15SEmmanuel Grumbach * firmware hardcodes the PTK offset to 0). In this case, we 27574615fd15SEmmanuel Grumbach * need to make sure we don't overwrite the hw_key_idx in the 27584615fd15SEmmanuel Grumbach * keyconf structure, because otherwise we cannot configure 27594615fd15SEmmanuel Grumbach * the original ones back when resuming. 2760e705c121SKalle Valo */ 27614615fd15SEmmanuel Grumbach if (key_offset == STA_KEY_IDX_INVALID) { 27624615fd15SEmmanuel Grumbach key_offset = iwl_mvm_set_fw_key_idx(mvm); 27634615fd15SEmmanuel Grumbach if (key_offset == STA_KEY_IDX_INVALID) 2764e705c121SKalle Valo return -ENOSPC; 27654615fd15SEmmanuel Grumbach keyconf->hw_key_idx = key_offset; 2766e705c121SKalle Valo } 2767e705c121SKalle Valo 27684615fd15SEmmanuel Grumbach ret = __iwl_mvm_set_sta_key(mvm, vif, sta, keyconf, key_offset, mcast); 27699c3deeb5SLuca Coelho if (ret) 2770e705c121SKalle Valo goto end; 2771e705c121SKalle Valo 2772e705c121SKalle Valo /* 2773e705c121SKalle Valo * For WEP, the same key is used for multicast and unicast. Upload it 2774e705c121SKalle Valo * again, using the same key offset, and now pointing the other one 2775e705c121SKalle Valo * to the same key slot (offset). 2776e705c121SKalle Valo * If this fails, remove the original as well. 2777e705c121SKalle Valo */ 2778e705c121SKalle Valo if (keyconf->cipher == WLAN_CIPHER_SUITE_WEP40 || 2779e705c121SKalle Valo keyconf->cipher == WLAN_CIPHER_SUITE_WEP104) { 27804615fd15SEmmanuel Grumbach ret = __iwl_mvm_set_sta_key(mvm, vif, sta, keyconf, 27814615fd15SEmmanuel Grumbach key_offset, !mcast); 2782e705c121SKalle Valo if (ret) { 2783e705c121SKalle Valo __iwl_mvm_remove_sta_key(mvm, sta_id, keyconf, mcast); 27849c3deeb5SLuca Coelho goto end; 2785e705c121SKalle Valo } 2786e705c121SKalle Valo } 2787e705c121SKalle Valo 27889c3deeb5SLuca Coelho __set_bit(key_offset, mvm->fw_key_table); 27899c3deeb5SLuca Coelho 2790e705c121SKalle Valo end: 2791e705c121SKalle Valo IWL_DEBUG_WEP(mvm, "key: cipher=%x len=%d idx=%d sta=%pM ret=%d\n", 2792e705c121SKalle Valo keyconf->cipher, keyconf->keylen, keyconf->keyidx, 2793e705c121SKalle Valo sta ? sta->addr : zero_addr, ret); 2794e705c121SKalle Valo return ret; 2795e705c121SKalle Valo } 2796e705c121SKalle Valo 2797e705c121SKalle Valo int iwl_mvm_remove_sta_key(struct iwl_mvm *mvm, 2798e705c121SKalle Valo struct ieee80211_vif *vif, 2799e705c121SKalle Valo struct ieee80211_sta *sta, 2800e705c121SKalle Valo struct ieee80211_key_conf *keyconf) 2801e705c121SKalle Valo { 2802e705c121SKalle Valo bool mcast = !(keyconf->flags & IEEE80211_KEY_FLAG_PAIRWISE); 28035f7a1847SJohannes Berg struct iwl_mvm_sta *mvm_sta; 28045f7a1847SJohannes Berg u8 sta_id = IWL_MVM_STATION_COUNT; 2805e705c121SKalle Valo int ret, i; 2806e705c121SKalle Valo 2807e705c121SKalle Valo lockdep_assert_held(&mvm->mutex); 2808e705c121SKalle Valo 28095f7a1847SJohannes Berg /* Get the station from the mvm local station table */ 28105f7a1847SJohannes Berg mvm_sta = iwl_mvm_get_key_sta(mvm, vif, sta); 2811e705c121SKalle Valo 2812e705c121SKalle Valo IWL_DEBUG_WEP(mvm, "mvm remove dynamic key: idx=%d sta=%d\n", 2813e705c121SKalle Valo keyconf->keyidx, sta_id); 2814e705c121SKalle Valo 28158e160ab8SAyala Beker if (keyconf->cipher == WLAN_CIPHER_SUITE_AES_CMAC || 28168e160ab8SAyala Beker keyconf->cipher == WLAN_CIPHER_SUITE_BIP_GMAC_128 || 28178e160ab8SAyala Beker keyconf->cipher == WLAN_CIPHER_SUITE_BIP_GMAC_256) 2818e705c121SKalle Valo return iwl_mvm_send_sta_igtk(mvm, keyconf, sta_id, true); 2819e705c121SKalle Valo 2820e705c121SKalle Valo if (!__test_and_clear_bit(keyconf->hw_key_idx, mvm->fw_key_table)) { 2821e705c121SKalle Valo IWL_ERR(mvm, "offset %d not used in fw key table.\n", 2822e705c121SKalle Valo keyconf->hw_key_idx); 2823e705c121SKalle Valo return -ENOENT; 2824e705c121SKalle Valo } 2825e705c121SKalle Valo 2826e705c121SKalle Valo /* track which key was deleted last */ 2827e705c121SKalle Valo for (i = 0; i < STA_KEY_MAX_NUM; i++) { 2828e705c121SKalle Valo if (mvm->fw_key_deleted[i] < U8_MAX) 2829e705c121SKalle Valo mvm->fw_key_deleted[i]++; 2830e705c121SKalle Valo } 2831e705c121SKalle Valo mvm->fw_key_deleted[keyconf->hw_key_idx] = 0; 2832e705c121SKalle Valo 28335f7a1847SJohannes Berg if (!mvm_sta) { 2834e705c121SKalle Valo IWL_DEBUG_WEP(mvm, "station non-existent, early return.\n"); 2835e705c121SKalle Valo return 0; 2836e705c121SKalle Valo } 2837e705c121SKalle Valo 28385f7a1847SJohannes Berg sta_id = mvm_sta->sta_id; 28395f7a1847SJohannes Berg 2840e705c121SKalle Valo ret = __iwl_mvm_remove_sta_key(mvm, sta_id, keyconf, mcast); 2841e705c121SKalle Valo if (ret) 2842e705c121SKalle Valo return ret; 2843e705c121SKalle Valo 2844e705c121SKalle Valo /* delete WEP key twice to get rid of (now useless) offset */ 2845e705c121SKalle Valo if (keyconf->cipher == WLAN_CIPHER_SUITE_WEP40 || 2846e705c121SKalle Valo keyconf->cipher == WLAN_CIPHER_SUITE_WEP104) 2847e705c121SKalle Valo ret = __iwl_mvm_remove_sta_key(mvm, sta_id, keyconf, !mcast); 2848e705c121SKalle Valo 2849e705c121SKalle Valo return ret; 2850e705c121SKalle Valo } 2851e705c121SKalle Valo 2852e705c121SKalle Valo void iwl_mvm_update_tkip_key(struct iwl_mvm *mvm, 2853e705c121SKalle Valo struct ieee80211_vif *vif, 2854e705c121SKalle Valo struct ieee80211_key_conf *keyconf, 2855e705c121SKalle Valo struct ieee80211_sta *sta, u32 iv32, 2856e705c121SKalle Valo u16 *phase1key) 2857e705c121SKalle Valo { 2858e705c121SKalle Valo struct iwl_mvm_sta *mvm_sta; 2859e705c121SKalle Valo bool mcast = !(keyconf->flags & IEEE80211_KEY_FLAG_PAIRWISE); 2860e705c121SKalle Valo 2861e705c121SKalle Valo rcu_read_lock(); 2862e705c121SKalle Valo 28635f7a1847SJohannes Berg mvm_sta = iwl_mvm_get_key_sta(mvm, vif, sta); 28645f7a1847SJohannes Berg if (WARN_ON_ONCE(!mvm_sta)) 286512f17211SEmmanuel Grumbach goto unlock; 2866e705c121SKalle Valo iwl_mvm_send_sta_key(mvm, mvm_sta, keyconf, mcast, 28674615fd15SEmmanuel Grumbach iv32, phase1key, CMD_ASYNC, keyconf->hw_key_idx); 286812f17211SEmmanuel Grumbach 286912f17211SEmmanuel Grumbach unlock: 2870e705c121SKalle Valo rcu_read_unlock(); 2871e705c121SKalle Valo } 2872e705c121SKalle Valo 2873e705c121SKalle Valo void iwl_mvm_sta_modify_ps_wake(struct iwl_mvm *mvm, 2874e705c121SKalle Valo struct ieee80211_sta *sta) 2875e705c121SKalle Valo { 2876e705c121SKalle Valo struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta); 2877e705c121SKalle Valo struct iwl_mvm_add_sta_cmd cmd = { 2878e705c121SKalle Valo .add_modify = STA_MODE_MODIFY, 2879e705c121SKalle Valo .sta_id = mvmsta->sta_id, 2880e705c121SKalle Valo .station_flags_msk = cpu_to_le32(STA_FLG_PS), 2881e705c121SKalle Valo .mac_id_n_color = cpu_to_le32(mvmsta->mac_id_n_color), 2882e705c121SKalle Valo }; 2883e705c121SKalle Valo int ret; 2884e705c121SKalle Valo 2885854c5705SSara Sharon ret = iwl_mvm_send_cmd_pdu(mvm, ADD_STA, CMD_ASYNC, 2886854c5705SSara Sharon iwl_mvm_add_sta_cmd_size(mvm), &cmd); 2887e705c121SKalle Valo if (ret) 2888e705c121SKalle Valo IWL_ERR(mvm, "Failed to send ADD_STA command (%d)\n", ret); 2889e705c121SKalle Valo } 2890e705c121SKalle Valo 2891e705c121SKalle Valo void iwl_mvm_sta_modify_sleep_tx_count(struct iwl_mvm *mvm, 2892e705c121SKalle Valo struct ieee80211_sta *sta, 2893e705c121SKalle Valo enum ieee80211_frame_release_type reason, 2894e705c121SKalle Valo u16 cnt, u16 tids, bool more_data, 2895e705c121SKalle Valo bool agg) 2896e705c121SKalle Valo { 2897e705c121SKalle Valo struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta); 2898e705c121SKalle Valo struct iwl_mvm_add_sta_cmd cmd = { 2899e705c121SKalle Valo .add_modify = STA_MODE_MODIFY, 2900e705c121SKalle Valo .sta_id = mvmsta->sta_id, 2901e705c121SKalle Valo .modify_mask = STA_MODIFY_SLEEPING_STA_TX_COUNT, 2902e705c121SKalle Valo .sleep_tx_count = cpu_to_le16(cnt), 2903e705c121SKalle Valo .mac_id_n_color = cpu_to_le32(mvmsta->mac_id_n_color), 2904e705c121SKalle Valo }; 2905e705c121SKalle Valo int tid, ret; 2906e705c121SKalle Valo unsigned long _tids = tids; 2907e705c121SKalle Valo 2908e705c121SKalle Valo /* convert TIDs to ACs - we don't support TSPEC so that's OK 2909e705c121SKalle Valo * Note that this field is reserved and unused by firmware not 2910e705c121SKalle Valo * supporting GO uAPSD, so it's safe to always do this. 2911e705c121SKalle Valo */ 2912e705c121SKalle Valo for_each_set_bit(tid, &_tids, IWL_MAX_TID_COUNT) 2913e705c121SKalle Valo cmd.awake_acs |= BIT(tid_to_ucode_ac[tid]); 2914e705c121SKalle Valo 2915e705c121SKalle Valo /* If we're releasing frames from aggregation queues then check if the 2916e705c121SKalle Valo * all queues combined that we're releasing frames from have 2917e705c121SKalle Valo * - more frames than the service period, in which case more_data 2918e705c121SKalle Valo * needs to be set 2919e705c121SKalle Valo * - fewer than 'cnt' frames, in which case we need to adjust the 2920e705c121SKalle Valo * firmware command (but do that unconditionally) 2921e705c121SKalle Valo */ 2922e705c121SKalle Valo if (agg) { 2923e705c121SKalle Valo int remaining = cnt; 292436be0eb6SEmmanuel Grumbach int sleep_tx_count; 2925e705c121SKalle Valo 2926e705c121SKalle Valo spin_lock_bh(&mvmsta->lock); 2927e705c121SKalle Valo for_each_set_bit(tid, &_tids, IWL_MAX_TID_COUNT) { 2928e705c121SKalle Valo struct iwl_mvm_tid_data *tid_data; 2929e705c121SKalle Valo u16 n_queued; 2930e705c121SKalle Valo 2931e705c121SKalle Valo tid_data = &mvmsta->tid_data[tid]; 2932e705c121SKalle Valo if (WARN(tid_data->state != IWL_AGG_ON && 2933e705c121SKalle Valo tid_data->state != IWL_EMPTYING_HW_QUEUE_DELBA, 2934e705c121SKalle Valo "TID %d state is %d\n", 2935e705c121SKalle Valo tid, tid_data->state)) { 2936e705c121SKalle Valo spin_unlock_bh(&mvmsta->lock); 2937e705c121SKalle Valo ieee80211_sta_eosp(sta); 2938e705c121SKalle Valo return; 2939e705c121SKalle Valo } 2940e705c121SKalle Valo 2941e705c121SKalle Valo n_queued = iwl_mvm_tid_queued(tid_data); 2942e705c121SKalle Valo if (n_queued > remaining) { 2943e705c121SKalle Valo more_data = true; 2944e705c121SKalle Valo remaining = 0; 2945e705c121SKalle Valo break; 2946e705c121SKalle Valo } 2947e705c121SKalle Valo remaining -= n_queued; 2948e705c121SKalle Valo } 294936be0eb6SEmmanuel Grumbach sleep_tx_count = cnt - remaining; 295036be0eb6SEmmanuel Grumbach if (reason == IEEE80211_FRAME_RELEASE_UAPSD) 295136be0eb6SEmmanuel Grumbach mvmsta->sleep_tx_count = sleep_tx_count; 2952e705c121SKalle Valo spin_unlock_bh(&mvmsta->lock); 2953e705c121SKalle Valo 295436be0eb6SEmmanuel Grumbach cmd.sleep_tx_count = cpu_to_le16(sleep_tx_count); 2955e705c121SKalle Valo if (WARN_ON(cnt - remaining == 0)) { 2956e705c121SKalle Valo ieee80211_sta_eosp(sta); 2957e705c121SKalle Valo return; 2958e705c121SKalle Valo } 2959e705c121SKalle Valo } 2960e705c121SKalle Valo 2961e705c121SKalle Valo /* Note: this is ignored by firmware not supporting GO uAPSD */ 2962e705c121SKalle Valo if (more_data) 2963e705c121SKalle Valo cmd.sleep_state_flags |= cpu_to_le16(STA_SLEEP_STATE_MOREDATA); 2964e705c121SKalle Valo 2965e705c121SKalle Valo if (reason == IEEE80211_FRAME_RELEASE_PSPOLL) { 2966e705c121SKalle Valo mvmsta->next_status_eosp = true; 2967e705c121SKalle Valo cmd.sleep_state_flags |= cpu_to_le16(STA_SLEEP_STATE_PS_POLL); 2968e705c121SKalle Valo } else { 2969e705c121SKalle Valo cmd.sleep_state_flags |= cpu_to_le16(STA_SLEEP_STATE_UAPSD); 2970e705c121SKalle Valo } 2971e705c121SKalle Valo 2972156f92f2SEmmanuel Grumbach /* block the Tx queues until the FW updated the sleep Tx count */ 2973156f92f2SEmmanuel Grumbach iwl_trans_block_txq_ptrs(mvm->trans, true); 2974156f92f2SEmmanuel Grumbach 2975156f92f2SEmmanuel Grumbach ret = iwl_mvm_send_cmd_pdu(mvm, ADD_STA, 2976156f92f2SEmmanuel Grumbach CMD_ASYNC | CMD_WANT_ASYNC_CALLBACK, 2977854c5705SSara Sharon iwl_mvm_add_sta_cmd_size(mvm), &cmd); 2978e705c121SKalle Valo if (ret) 2979e705c121SKalle Valo IWL_ERR(mvm, "Failed to send ADD_STA command (%d)\n", ret); 2980e705c121SKalle Valo } 2981e705c121SKalle Valo 2982e705c121SKalle Valo void iwl_mvm_rx_eosp_notif(struct iwl_mvm *mvm, 2983e705c121SKalle Valo struct iwl_rx_cmd_buffer *rxb) 2984e705c121SKalle Valo { 2985e705c121SKalle Valo struct iwl_rx_packet *pkt = rxb_addr(rxb); 2986e705c121SKalle Valo struct iwl_mvm_eosp_notification *notif = (void *)pkt->data; 2987e705c121SKalle Valo struct ieee80211_sta *sta; 2988e705c121SKalle Valo u32 sta_id = le32_to_cpu(notif->sta_id); 2989e705c121SKalle Valo 2990e705c121SKalle Valo if (WARN_ON_ONCE(sta_id >= IWL_MVM_STATION_COUNT)) 2991e705c121SKalle Valo return; 2992e705c121SKalle Valo 2993e705c121SKalle Valo rcu_read_lock(); 2994e705c121SKalle Valo sta = rcu_dereference(mvm->fw_id_to_mac_id[sta_id]); 2995e705c121SKalle Valo if (!IS_ERR_OR_NULL(sta)) 2996e705c121SKalle Valo ieee80211_sta_eosp(sta); 2997e705c121SKalle Valo rcu_read_unlock(); 2998e705c121SKalle Valo } 2999e705c121SKalle Valo 3000e705c121SKalle Valo void iwl_mvm_sta_modify_disable_tx(struct iwl_mvm *mvm, 3001e705c121SKalle Valo struct iwl_mvm_sta *mvmsta, bool disable) 3002e705c121SKalle Valo { 3003e705c121SKalle Valo struct iwl_mvm_add_sta_cmd cmd = { 3004e705c121SKalle Valo .add_modify = STA_MODE_MODIFY, 3005e705c121SKalle Valo .sta_id = mvmsta->sta_id, 3006e705c121SKalle Valo .station_flags = disable ? cpu_to_le32(STA_FLG_DISABLE_TX) : 0, 3007e705c121SKalle Valo .station_flags_msk = cpu_to_le32(STA_FLG_DISABLE_TX), 3008e705c121SKalle Valo .mac_id_n_color = cpu_to_le32(mvmsta->mac_id_n_color), 3009e705c121SKalle Valo }; 3010e705c121SKalle Valo int ret; 3011e705c121SKalle Valo 3012854c5705SSara Sharon ret = iwl_mvm_send_cmd_pdu(mvm, ADD_STA, CMD_ASYNC, 3013854c5705SSara Sharon iwl_mvm_add_sta_cmd_size(mvm), &cmd); 3014e705c121SKalle Valo if (ret) 3015e705c121SKalle Valo IWL_ERR(mvm, "Failed to send ADD_STA command (%d)\n", ret); 3016e705c121SKalle Valo } 3017e705c121SKalle Valo 3018e705c121SKalle Valo void iwl_mvm_sta_modify_disable_tx_ap(struct iwl_mvm *mvm, 3019e705c121SKalle Valo struct ieee80211_sta *sta, 3020e705c121SKalle Valo bool disable) 3021e705c121SKalle Valo { 3022e705c121SKalle Valo struct iwl_mvm_sta *mvm_sta = iwl_mvm_sta_from_mac80211(sta); 3023e705c121SKalle Valo 3024e705c121SKalle Valo spin_lock_bh(&mvm_sta->lock); 3025e705c121SKalle Valo 3026e705c121SKalle Valo if (mvm_sta->disable_tx == disable) { 3027e705c121SKalle Valo spin_unlock_bh(&mvm_sta->lock); 3028e705c121SKalle Valo return; 3029e705c121SKalle Valo } 3030e705c121SKalle Valo 3031e705c121SKalle Valo mvm_sta->disable_tx = disable; 3032e705c121SKalle Valo 3033e705c121SKalle Valo /* 3034e705c121SKalle Valo * Tell mac80211 to start/stop queuing tx for this station, 3035e705c121SKalle Valo * but don't stop queuing if there are still pending frames 3036e705c121SKalle Valo * for this station. 3037e705c121SKalle Valo */ 3038e705c121SKalle Valo if (disable || !atomic_read(&mvm->pending_frames[mvm_sta->sta_id])) 3039e705c121SKalle Valo ieee80211_sta_block_awake(mvm->hw, sta, disable); 3040e705c121SKalle Valo 3041e705c121SKalle Valo iwl_mvm_sta_modify_disable_tx(mvm, mvm_sta, disable); 3042e705c121SKalle Valo 3043e705c121SKalle Valo spin_unlock_bh(&mvm_sta->lock); 3044e705c121SKalle Valo } 3045e705c121SKalle Valo 3046e705c121SKalle Valo void iwl_mvm_modify_all_sta_disable_tx(struct iwl_mvm *mvm, 3047e705c121SKalle Valo struct iwl_mvm_vif *mvmvif, 3048e705c121SKalle Valo bool disable) 3049e705c121SKalle Valo { 3050e705c121SKalle Valo struct ieee80211_sta *sta; 3051e705c121SKalle Valo struct iwl_mvm_sta *mvm_sta; 3052e705c121SKalle Valo int i; 3053e705c121SKalle Valo 3054e705c121SKalle Valo lockdep_assert_held(&mvm->mutex); 3055e705c121SKalle Valo 3056e705c121SKalle Valo /* Block/unblock all the stations of the given mvmvif */ 3057e705c121SKalle Valo for (i = 0; i < IWL_MVM_STATION_COUNT; i++) { 3058e705c121SKalle Valo sta = rcu_dereference_protected(mvm->fw_id_to_mac_id[i], 3059e705c121SKalle Valo lockdep_is_held(&mvm->mutex)); 3060e705c121SKalle Valo if (IS_ERR_OR_NULL(sta)) 3061e705c121SKalle Valo continue; 3062e705c121SKalle Valo 3063e705c121SKalle Valo mvm_sta = iwl_mvm_sta_from_mac80211(sta); 3064e705c121SKalle Valo if (mvm_sta->mac_id_n_color != 3065e705c121SKalle Valo FW_CMD_ID_AND_COLOR(mvmvif->id, mvmvif->color)) 3066e705c121SKalle Valo continue; 3067e705c121SKalle Valo 3068e705c121SKalle Valo iwl_mvm_sta_modify_disable_tx_ap(mvm, sta, disable); 3069e705c121SKalle Valo } 3070e705c121SKalle Valo } 3071e705c121SKalle Valo 3072e705c121SKalle Valo void iwl_mvm_csa_client_absent(struct iwl_mvm *mvm, struct ieee80211_vif *vif) 3073e705c121SKalle Valo { 3074e705c121SKalle Valo struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 3075e705c121SKalle Valo struct iwl_mvm_sta *mvmsta; 3076e705c121SKalle Valo 3077e705c121SKalle Valo rcu_read_lock(); 3078e705c121SKalle Valo 3079e705c121SKalle Valo mvmsta = iwl_mvm_sta_from_staid_rcu(mvm, mvmvif->ap_sta_id); 3080e705c121SKalle Valo 3081e705c121SKalle Valo if (!WARN_ON(!mvmsta)) 3082e705c121SKalle Valo iwl_mvm_sta_modify_disable_tx(mvm, mvmsta, true); 3083e705c121SKalle Valo 3084e705c121SKalle Valo rcu_read_unlock(); 3085e705c121SKalle Valo } 3086