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 47142db09c1SLiad Kaufman ac_to_queue[mvm->queue_info[i].mac80211_ac] = i; 47242db09c1SLiad Kaufman } 47342db09c1SLiad Kaufman 47442db09c1SLiad Kaufman /* 47542db09c1SLiad Kaufman * The queue to share is chosen only from DATA queues as follows (in 47642db09c1SLiad Kaufman * descending priority): 47742db09c1SLiad Kaufman * 1. An AC_BE queue 47842db09c1SLiad Kaufman * 2. Same AC queue 47942db09c1SLiad Kaufman * 3. Highest AC queue that is lower than new AC 48042db09c1SLiad Kaufman * 4. Any existing AC (there always is at least 1 DATA queue) 48142db09c1SLiad Kaufman */ 48242db09c1SLiad Kaufman 48342db09c1SLiad Kaufman /* Priority 1: An AC_BE queue */ 48442db09c1SLiad Kaufman if (ac_to_queue[IEEE80211_AC_BE] != IEEE80211_INVAL_HW_QUEUE) 48542db09c1SLiad Kaufman queue = ac_to_queue[IEEE80211_AC_BE]; 48642db09c1SLiad Kaufman /* Priority 2: Same AC queue */ 48742db09c1SLiad Kaufman else if (ac_to_queue[ac] != IEEE80211_INVAL_HW_QUEUE) 48842db09c1SLiad Kaufman queue = ac_to_queue[ac]; 48942db09c1SLiad Kaufman /* Priority 3a: If new AC is VO and VI exists - use VI */ 49042db09c1SLiad Kaufman else if (ac == IEEE80211_AC_VO && 49142db09c1SLiad Kaufman ac_to_queue[IEEE80211_AC_VI] != IEEE80211_INVAL_HW_QUEUE) 49242db09c1SLiad Kaufman queue = ac_to_queue[IEEE80211_AC_VI]; 49342db09c1SLiad Kaufman /* Priority 3b: No BE so only AC less than the new one is BK */ 49442db09c1SLiad Kaufman else if (ac_to_queue[IEEE80211_AC_BK] != IEEE80211_INVAL_HW_QUEUE) 49542db09c1SLiad Kaufman queue = ac_to_queue[IEEE80211_AC_BK]; 49642db09c1SLiad Kaufman /* Priority 4a: No BE nor BK - use VI if exists */ 49742db09c1SLiad Kaufman else if (ac_to_queue[IEEE80211_AC_VI] != IEEE80211_INVAL_HW_QUEUE) 49842db09c1SLiad Kaufman queue = ac_to_queue[IEEE80211_AC_VI]; 49942db09c1SLiad Kaufman /* Priority 4b: No BE, BK nor VI - use VO if exists */ 50042db09c1SLiad Kaufman else if (ac_to_queue[IEEE80211_AC_VO] != IEEE80211_INVAL_HW_QUEUE) 50142db09c1SLiad Kaufman queue = ac_to_queue[IEEE80211_AC_VO]; 50242db09c1SLiad Kaufman 50342db09c1SLiad Kaufman /* Make sure queue found (or not) is legal */ 50442db09c1SLiad Kaufman if (!((queue >= IWL_MVM_DQA_MIN_MGMT_QUEUE && 50542db09c1SLiad Kaufman queue <= IWL_MVM_DQA_MAX_MGMT_QUEUE) || 50642db09c1SLiad Kaufman (queue >= IWL_MVM_DQA_MIN_DATA_QUEUE && 50742db09c1SLiad Kaufman queue <= IWL_MVM_DQA_MAX_DATA_QUEUE) || 50842db09c1SLiad Kaufman (queue == IWL_MVM_DQA_BSS_CLIENT_QUEUE))) { 50942db09c1SLiad Kaufman IWL_ERR(mvm, "No DATA queues available to share\n"); 51042db09c1SLiad Kaufman queue = -ENOSPC; 51142db09c1SLiad Kaufman } 51242db09c1SLiad Kaufman 51342db09c1SLiad Kaufman return queue; 51442db09c1SLiad Kaufman } 51542db09c1SLiad Kaufman 51624afba76SLiad Kaufman static int iwl_mvm_sta_alloc_queue(struct iwl_mvm *mvm, 51724afba76SLiad Kaufman struct ieee80211_sta *sta, u8 ac, int tid, 51824afba76SLiad Kaufman struct ieee80211_hdr *hdr) 51924afba76SLiad Kaufman { 52024afba76SLiad Kaufman struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta); 52124afba76SLiad Kaufman struct iwl_trans_txq_scd_cfg cfg = { 52224afba76SLiad Kaufman .fifo = iwl_mvm_ac_to_tx_fifo[ac], 52324afba76SLiad Kaufman .sta_id = mvmsta->sta_id, 52424afba76SLiad Kaufman .tid = tid, 52524afba76SLiad Kaufman .frame_limit = IWL_FRAME_LIMIT, 52624afba76SLiad Kaufman }; 52724afba76SLiad Kaufman unsigned int wdg_timeout = 52824afba76SLiad Kaufman iwl_mvm_get_wd_timeout(mvm, mvmsta->vif, false, false); 52924afba76SLiad Kaufman u8 mac_queue = mvmsta->vif->hw_queue[ac]; 53024afba76SLiad Kaufman int queue = -1; 5319794c64fSLiad Kaufman bool using_inactive_queue = false; 5329794c64fSLiad Kaufman unsigned long disable_agg_tids = 0; 5339794c64fSLiad Kaufman enum iwl_mvm_agg_state queue_state; 53442db09c1SLiad Kaufman bool shared_queue = false; 53524afba76SLiad Kaufman int ssn; 53642db09c1SLiad Kaufman unsigned long tfd_queue_mask; 537cf961e16SLiad Kaufman int ret; 53824afba76SLiad Kaufman 53924afba76SLiad Kaufman lockdep_assert_held(&mvm->mutex); 54024afba76SLiad Kaufman 54142db09c1SLiad Kaufman spin_lock_bh(&mvmsta->lock); 54242db09c1SLiad Kaufman tfd_queue_mask = mvmsta->tfd_queue_msk; 54342db09c1SLiad Kaufman spin_unlock_bh(&mvmsta->lock); 54442db09c1SLiad Kaufman 545d2515a99SLiad Kaufman spin_lock_bh(&mvm->queue_info_lock); 54624afba76SLiad Kaufman 54724afba76SLiad Kaufman /* 54824afba76SLiad Kaufman * Non-QoS, QoS NDP and MGMT frames should go to a MGMT queue, if one 54924afba76SLiad Kaufman * exists 55024afba76SLiad Kaufman */ 55124afba76SLiad Kaufman if (!ieee80211_is_data_qos(hdr->frame_control) || 55224afba76SLiad Kaufman ieee80211_is_qos_nullfunc(hdr->frame_control)) { 5539794c64fSLiad Kaufman queue = iwl_mvm_find_free_queue(mvm, mvmsta->sta_id, 5549794c64fSLiad Kaufman IWL_MVM_DQA_MIN_MGMT_QUEUE, 55524afba76SLiad Kaufman IWL_MVM_DQA_MAX_MGMT_QUEUE); 55624afba76SLiad Kaufman if (queue >= IWL_MVM_DQA_MIN_MGMT_QUEUE) 55724afba76SLiad Kaufman IWL_DEBUG_TX_QUEUES(mvm, "Found free MGMT queue #%d\n", 55824afba76SLiad Kaufman queue); 55924afba76SLiad Kaufman 56024afba76SLiad Kaufman /* If no such queue is found, we'll use a DATA queue instead */ 56124afba76SLiad Kaufman } 56224afba76SLiad Kaufman 5639794c64fSLiad Kaufman if ((queue < 0 && mvmsta->reserved_queue != IEEE80211_INVAL_HW_QUEUE) && 5649794c64fSLiad Kaufman (mvm->queue_info[mvmsta->reserved_queue].status == 5659794c64fSLiad Kaufman IWL_MVM_QUEUE_RESERVED || 5669794c64fSLiad Kaufman mvm->queue_info[mvmsta->reserved_queue].status == 5679794c64fSLiad Kaufman IWL_MVM_QUEUE_INACTIVE)) { 56824afba76SLiad Kaufman queue = mvmsta->reserved_queue; 5699794c64fSLiad Kaufman mvm->queue_info[queue].reserved = true; 57024afba76SLiad Kaufman IWL_DEBUG_TX_QUEUES(mvm, "Using reserved queue #%d\n", queue); 57124afba76SLiad Kaufman } 57224afba76SLiad Kaufman 57324afba76SLiad Kaufman if (queue < 0) 5749794c64fSLiad Kaufman queue = iwl_mvm_find_free_queue(mvm, mvmsta->sta_id, 5759794c64fSLiad Kaufman IWL_MVM_DQA_MIN_DATA_QUEUE, 57624afba76SLiad Kaufman IWL_MVM_DQA_MAX_DATA_QUEUE); 577cf961e16SLiad Kaufman 578cf961e16SLiad Kaufman /* 5799794c64fSLiad Kaufman * Check if this queue is already allocated but inactive. 5809794c64fSLiad Kaufman * In such a case, we'll need to first free this queue before enabling 5819794c64fSLiad Kaufman * it again, so we'll mark it as reserved to make sure no new traffic 5829794c64fSLiad Kaufman * arrives on it 5839794c64fSLiad Kaufman */ 5849794c64fSLiad Kaufman if (queue > 0 && 5859794c64fSLiad Kaufman mvm->queue_info[queue].status == IWL_MVM_QUEUE_INACTIVE) { 5869794c64fSLiad Kaufman mvm->queue_info[queue].status = IWL_MVM_QUEUE_RESERVED; 5879794c64fSLiad Kaufman using_inactive_queue = true; 5889794c64fSLiad Kaufman IWL_DEBUG_TX_QUEUES(mvm, 5899794c64fSLiad Kaufman "Re-assigning TXQ %d: sta_id=%d, tid=%d\n", 5909794c64fSLiad Kaufman queue, mvmsta->sta_id, tid); 5919794c64fSLiad Kaufman } 5929794c64fSLiad Kaufman 59342db09c1SLiad Kaufman /* No free queue - we'll have to share */ 59442db09c1SLiad Kaufman if (queue <= 0) { 59542db09c1SLiad Kaufman queue = iwl_mvm_get_shared_queue(mvm, tfd_queue_mask, ac); 59642db09c1SLiad Kaufman if (queue > 0) { 59742db09c1SLiad Kaufman shared_queue = true; 59842db09c1SLiad Kaufman mvm->queue_info[queue].status = IWL_MVM_QUEUE_SHARED; 59942db09c1SLiad Kaufman } 60042db09c1SLiad Kaufman } 60142db09c1SLiad Kaufman 6029794c64fSLiad Kaufman /* 603cf961e16SLiad Kaufman * Mark TXQ as ready, even though it hasn't been fully configured yet, 604cf961e16SLiad Kaufman * to make sure no one else takes it. 605cf961e16SLiad Kaufman * This will allow avoiding re-acquiring the lock at the end of the 606cf961e16SLiad Kaufman * configuration. On error we'll mark it back as free. 607cf961e16SLiad Kaufman */ 60842db09c1SLiad Kaufman if ((queue > 0) && !shared_queue) 609cf961e16SLiad Kaufman mvm->queue_info[queue].status = IWL_MVM_QUEUE_READY; 61024afba76SLiad Kaufman 611d2515a99SLiad Kaufman spin_unlock_bh(&mvm->queue_info_lock); 61224afba76SLiad Kaufman 61342db09c1SLiad Kaufman /* This shouldn't happen - out of queues */ 61442db09c1SLiad Kaufman if (WARN_ON(queue <= 0)) { 61542db09c1SLiad Kaufman IWL_ERR(mvm, "No available queues for tid %d on sta_id %d\n", 61642db09c1SLiad Kaufman tid, cfg.sta_id); 61724afba76SLiad Kaufman return -ENOSPC; 61842db09c1SLiad Kaufman } 61924afba76SLiad Kaufman 62024afba76SLiad Kaufman /* 62124afba76SLiad Kaufman * Actual en/disablement of aggregations is through the ADD_STA HCMD, 62224afba76SLiad Kaufman * but for configuring the SCD to send A-MPDUs we need to mark the queue 62324afba76SLiad Kaufman * as aggregatable. 62424afba76SLiad Kaufman * Mark all DATA queues as allowing to be aggregated at some point 62524afba76SLiad Kaufman */ 626d5216a28SLiad Kaufman cfg.aggregate = (queue >= IWL_MVM_DQA_MIN_DATA_QUEUE || 627d5216a28SLiad Kaufman queue == IWL_MVM_DQA_BSS_CLIENT_QUEUE); 62824afba76SLiad Kaufman 6299794c64fSLiad Kaufman /* 6309794c64fSLiad Kaufman * If this queue was previously inactive (idle) - we need to free it 6319794c64fSLiad Kaufman * first 6329794c64fSLiad Kaufman */ 6339794c64fSLiad Kaufman if (using_inactive_queue) { 6349794c64fSLiad Kaufman struct iwl_scd_txq_cfg_cmd cmd = { 6359794c64fSLiad Kaufman .scd_queue = queue, 6369794c64fSLiad Kaufman .enable = 0, 6379794c64fSLiad Kaufman }; 63893f436e2SLiad Kaufman u8 ac; 6399794c64fSLiad Kaufman 6409794c64fSLiad Kaufman disable_agg_tids = iwl_mvm_remove_sta_queue_marking(mvm, queue); 6419794c64fSLiad Kaufman 64293f436e2SLiad Kaufman spin_lock_bh(&mvm->queue_info_lock); 64393f436e2SLiad Kaufman ac = mvm->queue_info[queue].mac80211_ac; 64493f436e2SLiad Kaufman cmd.sta_id = mvm->queue_info[queue].ra_sta_id; 64593f436e2SLiad Kaufman cmd.tx_fifo = iwl_mvm_ac_to_tx_fifo[ac]; 64693f436e2SLiad Kaufman spin_unlock_bh(&mvm->queue_info_lock); 64793f436e2SLiad Kaufman 6489794c64fSLiad Kaufman /* Disable the queue */ 6499794c64fSLiad Kaufman iwl_mvm_invalidate_sta_queue(mvm, queue, disable_agg_tids, 6509794c64fSLiad Kaufman true); 6519794c64fSLiad Kaufman iwl_trans_txq_disable(mvm->trans, queue, false); 6529794c64fSLiad Kaufman ret = iwl_mvm_send_cmd_pdu(mvm, SCD_QUEUE_CFG, 0, sizeof(cmd), 6539794c64fSLiad Kaufman &cmd); 6549794c64fSLiad Kaufman if (ret) { 6559794c64fSLiad Kaufman IWL_ERR(mvm, 6569794c64fSLiad Kaufman "Failed to free inactive queue %d (ret=%d)\n", 6579794c64fSLiad Kaufman queue, ret); 6589794c64fSLiad Kaufman 6599794c64fSLiad Kaufman /* Re-mark the inactive queue as inactive */ 6609794c64fSLiad Kaufman spin_lock_bh(&mvm->queue_info_lock); 6619794c64fSLiad Kaufman mvm->queue_info[queue].status = IWL_MVM_QUEUE_INACTIVE; 6629794c64fSLiad Kaufman spin_unlock_bh(&mvm->queue_info_lock); 6639794c64fSLiad Kaufman 6649794c64fSLiad Kaufman return ret; 6659794c64fSLiad Kaufman } 6669794c64fSLiad Kaufman } 6679794c64fSLiad Kaufman 66842db09c1SLiad Kaufman IWL_DEBUG_TX_QUEUES(mvm, 66942db09c1SLiad Kaufman "Allocating %squeue #%d to sta %d on tid %d\n", 67042db09c1SLiad Kaufman shared_queue ? "shared " : "", queue, 67142db09c1SLiad Kaufman mvmsta->sta_id, tid); 67242db09c1SLiad Kaufman 67342db09c1SLiad Kaufman if (shared_queue) { 67442db09c1SLiad Kaufman /* Disable any open aggs on this queue */ 67542db09c1SLiad Kaufman disable_agg_tids = iwl_mvm_get_queue_agg_tids(mvm, queue); 67642db09c1SLiad Kaufman 67742db09c1SLiad Kaufman if (disable_agg_tids) { 67842db09c1SLiad Kaufman IWL_DEBUG_TX_QUEUES(mvm, "Disabling aggs on queue %d\n", 67942db09c1SLiad Kaufman queue); 68042db09c1SLiad Kaufman iwl_mvm_invalidate_sta_queue(mvm, queue, 68142db09c1SLiad Kaufman disable_agg_tids, false); 68242db09c1SLiad Kaufman } 68342db09c1SLiad Kaufman 68442db09c1SLiad Kaufman /* Mark queue as shared in transport */ 68542db09c1SLiad Kaufman iwl_trans_txq_set_shared_mode(mvm->trans, queue, true); 68642db09c1SLiad Kaufman 68742db09c1SLiad Kaufman /* TODO: a redirection may be required - DQA phase 2 */ 68842db09c1SLiad Kaufman } 68924afba76SLiad Kaufman 69024afba76SLiad Kaufman ssn = IEEE80211_SEQ_TO_SN(le16_to_cpu(hdr->seq_ctrl)); 69124afba76SLiad Kaufman iwl_mvm_enable_txq(mvm, queue, mac_queue, ssn, &cfg, 69224afba76SLiad Kaufman wdg_timeout); 69324afba76SLiad Kaufman 69424afba76SLiad Kaufman spin_lock_bh(&mvmsta->lock); 69524afba76SLiad Kaufman mvmsta->tid_data[tid].txq_id = queue; 6969794c64fSLiad Kaufman mvmsta->tid_data[tid].is_tid_active = true; 69724afba76SLiad Kaufman mvmsta->tfd_queue_msk |= BIT(queue); 6989794c64fSLiad Kaufman queue_state = mvmsta->tid_data[tid].state; 69924afba76SLiad Kaufman 70024afba76SLiad Kaufman if (mvmsta->reserved_queue == queue) 70124afba76SLiad Kaufman mvmsta->reserved_queue = IEEE80211_INVAL_HW_QUEUE; 70224afba76SLiad Kaufman spin_unlock_bh(&mvmsta->lock); 70324afba76SLiad Kaufman 70442db09c1SLiad Kaufman if (!shared_queue) { 705cf961e16SLiad Kaufman ret = iwl_mvm_sta_send_to_fw(mvm, sta, true, STA_MODIFY_QUEUES); 706cf961e16SLiad Kaufman if (ret) 707cf961e16SLiad Kaufman goto out_err; 708cf961e16SLiad Kaufman 7099794c64fSLiad Kaufman /* If we need to re-enable aggregations... */ 71042db09c1SLiad Kaufman if (queue_state == IWL_AGG_ON) { 7119794c64fSLiad Kaufman ret = iwl_mvm_sta_tx_agg(mvm, sta, tid, queue, true); 71242db09c1SLiad Kaufman if (ret) 71342db09c1SLiad Kaufman goto out_err; 71442db09c1SLiad Kaufman } 71542db09c1SLiad Kaufman } 7169794c64fSLiad Kaufman 71742db09c1SLiad Kaufman return 0; 718cf961e16SLiad Kaufman 719cf961e16SLiad Kaufman out_err: 720cf961e16SLiad Kaufman iwl_mvm_disable_txq(mvm, queue, mac_queue, tid, 0); 721cf961e16SLiad Kaufman 722cf961e16SLiad Kaufman return ret; 72324afba76SLiad Kaufman } 72424afba76SLiad Kaufman 72524afba76SLiad Kaufman static inline u8 iwl_mvm_tid_to_ac_queue(int tid) 72624afba76SLiad Kaufman { 72724afba76SLiad Kaufman if (tid == IWL_MAX_TID_COUNT) 72824afba76SLiad Kaufman return IEEE80211_AC_VO; /* MGMT */ 72924afba76SLiad Kaufman 73024afba76SLiad Kaufman return tid_to_mac80211_ac[tid]; 73124afba76SLiad Kaufman } 73224afba76SLiad Kaufman 73324afba76SLiad Kaufman static void iwl_mvm_tx_deferred_stream(struct iwl_mvm *mvm, 73424afba76SLiad Kaufman struct ieee80211_sta *sta, int tid) 73524afba76SLiad Kaufman { 73624afba76SLiad Kaufman struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta); 73724afba76SLiad Kaufman struct iwl_mvm_tid_data *tid_data = &mvmsta->tid_data[tid]; 73824afba76SLiad Kaufman struct sk_buff *skb; 73924afba76SLiad Kaufman struct ieee80211_hdr *hdr; 74024afba76SLiad Kaufman struct sk_buff_head deferred_tx; 74124afba76SLiad Kaufman u8 mac_queue; 74224afba76SLiad Kaufman bool no_queue = false; /* Marks if there is a problem with the queue */ 74324afba76SLiad Kaufman u8 ac; 74424afba76SLiad Kaufman 74524afba76SLiad Kaufman lockdep_assert_held(&mvm->mutex); 74624afba76SLiad Kaufman 74724afba76SLiad Kaufman skb = skb_peek(&tid_data->deferred_tx_frames); 74824afba76SLiad Kaufman if (!skb) 74924afba76SLiad Kaufman return; 75024afba76SLiad Kaufman hdr = (void *)skb->data; 75124afba76SLiad Kaufman 75224afba76SLiad Kaufman ac = iwl_mvm_tid_to_ac_queue(tid); 75324afba76SLiad Kaufman mac_queue = IEEE80211_SKB_CB(skb)->hw_queue; 75424afba76SLiad Kaufman 75524afba76SLiad Kaufman if (tid_data->txq_id == IEEE80211_INVAL_HW_QUEUE && 75624afba76SLiad Kaufman iwl_mvm_sta_alloc_queue(mvm, sta, ac, tid, hdr)) { 75724afba76SLiad Kaufman IWL_ERR(mvm, 75824afba76SLiad Kaufman "Can't alloc TXQ for sta %d tid %d - dropping frame\n", 75924afba76SLiad Kaufman mvmsta->sta_id, tid); 76024afba76SLiad Kaufman 76124afba76SLiad Kaufman /* 76224afba76SLiad Kaufman * Mark queue as problematic so later the deferred traffic is 76324afba76SLiad Kaufman * freed, as we can do nothing with it 76424afba76SLiad Kaufman */ 76524afba76SLiad Kaufman no_queue = true; 76624afba76SLiad Kaufman } 76724afba76SLiad Kaufman 76824afba76SLiad Kaufman __skb_queue_head_init(&deferred_tx); 76924afba76SLiad Kaufman 770d2515a99SLiad Kaufman /* Disable bottom-halves when entering TX path */ 771d2515a99SLiad Kaufman local_bh_disable(); 77224afba76SLiad Kaufman spin_lock(&mvmsta->lock); 77324afba76SLiad Kaufman skb_queue_splice_init(&tid_data->deferred_tx_frames, &deferred_tx); 77424afba76SLiad Kaufman spin_unlock(&mvmsta->lock); 77524afba76SLiad Kaufman 77624afba76SLiad Kaufman while ((skb = __skb_dequeue(&deferred_tx))) 77724afba76SLiad Kaufman if (no_queue || iwl_mvm_tx_skb(mvm, skb, sta)) 77824afba76SLiad Kaufman ieee80211_free_txskb(mvm->hw, skb); 77924afba76SLiad Kaufman local_bh_enable(); 78024afba76SLiad Kaufman 78124afba76SLiad Kaufman /* Wake queue */ 78224afba76SLiad Kaufman iwl_mvm_start_mac_queues(mvm, BIT(mac_queue)); 78324afba76SLiad Kaufman } 78424afba76SLiad Kaufman 78524afba76SLiad Kaufman void iwl_mvm_add_new_dqa_stream_wk(struct work_struct *wk) 78624afba76SLiad Kaufman { 78724afba76SLiad Kaufman struct iwl_mvm *mvm = container_of(wk, struct iwl_mvm, 78824afba76SLiad Kaufman add_stream_wk); 78924afba76SLiad Kaufman struct ieee80211_sta *sta; 79024afba76SLiad Kaufman struct iwl_mvm_sta *mvmsta; 79124afba76SLiad Kaufman unsigned long deferred_tid_traffic; 79224afba76SLiad Kaufman int sta_id, tid; 79324afba76SLiad Kaufman 7949794c64fSLiad Kaufman /* Check inactivity of queues */ 7959794c64fSLiad Kaufman iwl_mvm_inactivity_check(mvm); 7969794c64fSLiad Kaufman 79724afba76SLiad Kaufman mutex_lock(&mvm->mutex); 79824afba76SLiad Kaufman 79924afba76SLiad Kaufman /* Go over all stations with deferred traffic */ 80024afba76SLiad Kaufman for_each_set_bit(sta_id, mvm->sta_deferred_frames, 80124afba76SLiad Kaufman IWL_MVM_STATION_COUNT) { 80224afba76SLiad Kaufman clear_bit(sta_id, mvm->sta_deferred_frames); 80324afba76SLiad Kaufman sta = rcu_dereference_protected(mvm->fw_id_to_mac_id[sta_id], 80424afba76SLiad Kaufman lockdep_is_held(&mvm->mutex)); 80524afba76SLiad Kaufman if (IS_ERR_OR_NULL(sta)) 80624afba76SLiad Kaufman continue; 80724afba76SLiad Kaufman 80824afba76SLiad Kaufman mvmsta = iwl_mvm_sta_from_mac80211(sta); 80924afba76SLiad Kaufman deferred_tid_traffic = mvmsta->deferred_traffic_tid_map; 81024afba76SLiad Kaufman 81124afba76SLiad Kaufman for_each_set_bit(tid, &deferred_tid_traffic, 81224afba76SLiad Kaufman IWL_MAX_TID_COUNT + 1) 81324afba76SLiad Kaufman iwl_mvm_tx_deferred_stream(mvm, sta, tid); 81424afba76SLiad Kaufman } 81524afba76SLiad Kaufman 81624afba76SLiad Kaufman mutex_unlock(&mvm->mutex); 81724afba76SLiad Kaufman } 81824afba76SLiad Kaufman 81924afba76SLiad Kaufman static int iwl_mvm_reserve_sta_stream(struct iwl_mvm *mvm, 820d5216a28SLiad Kaufman struct ieee80211_sta *sta, 821d5216a28SLiad Kaufman enum nl80211_iftype vif_type) 82224afba76SLiad Kaufman { 82324afba76SLiad Kaufman struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta); 82424afba76SLiad Kaufman int queue; 82524afba76SLiad Kaufman 8269794c64fSLiad Kaufman /* 8279794c64fSLiad Kaufman * Check for inactive queues, so we don't reach a situation where we 8289794c64fSLiad Kaufman * can't add a STA due to a shortage in queues that doesn't really exist 8299794c64fSLiad Kaufman */ 8309794c64fSLiad Kaufman iwl_mvm_inactivity_check(mvm); 8319794c64fSLiad Kaufman 83224afba76SLiad Kaufman spin_lock_bh(&mvm->queue_info_lock); 83324afba76SLiad Kaufman 83424afba76SLiad Kaufman /* Make sure we have free resources for this STA */ 835d5216a28SLiad Kaufman if (vif_type == NL80211_IFTYPE_STATION && !sta->tdls && 836d5216a28SLiad Kaufman !mvm->queue_info[IWL_MVM_DQA_BSS_CLIENT_QUEUE].hw_queue_refcount && 837cf961e16SLiad Kaufman (mvm->queue_info[IWL_MVM_DQA_BSS_CLIENT_QUEUE].status == 838cf961e16SLiad Kaufman IWL_MVM_QUEUE_FREE)) 839d5216a28SLiad Kaufman queue = IWL_MVM_DQA_BSS_CLIENT_QUEUE; 840d5216a28SLiad Kaufman else 8419794c64fSLiad Kaufman queue = iwl_mvm_find_free_queue(mvm, mvmsta->sta_id, 8429794c64fSLiad Kaufman IWL_MVM_DQA_MIN_DATA_QUEUE, 84324afba76SLiad Kaufman IWL_MVM_DQA_MAX_DATA_QUEUE); 84424afba76SLiad Kaufman if (queue < 0) { 84524afba76SLiad Kaufman spin_unlock_bh(&mvm->queue_info_lock); 84624afba76SLiad Kaufman IWL_ERR(mvm, "No available queues for new station\n"); 84724afba76SLiad Kaufman return -ENOSPC; 84824afba76SLiad Kaufman } 849cf961e16SLiad Kaufman mvm->queue_info[queue].status = IWL_MVM_QUEUE_RESERVED; 85024afba76SLiad Kaufman 85124afba76SLiad Kaufman spin_unlock_bh(&mvm->queue_info_lock); 85224afba76SLiad Kaufman 85324afba76SLiad Kaufman mvmsta->reserved_queue = queue; 85424afba76SLiad Kaufman 85524afba76SLiad Kaufman IWL_DEBUG_TX_QUEUES(mvm, "Reserving data queue #%d for sta_id %d\n", 85624afba76SLiad Kaufman queue, mvmsta->sta_id); 85724afba76SLiad Kaufman 85824afba76SLiad Kaufman return 0; 85924afba76SLiad Kaufman } 86024afba76SLiad Kaufman 861e705c121SKalle Valo int iwl_mvm_add_sta(struct iwl_mvm *mvm, 862e705c121SKalle Valo struct ieee80211_vif *vif, 863e705c121SKalle Valo struct ieee80211_sta *sta) 864e705c121SKalle Valo { 865e705c121SKalle Valo struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 866e705c121SKalle Valo struct iwl_mvm_sta *mvm_sta = iwl_mvm_sta_from_mac80211(sta); 867a571f5f6SSara Sharon struct iwl_mvm_rxq_dup_data *dup_data; 868e705c121SKalle Valo int i, ret, sta_id; 869e705c121SKalle Valo 870e705c121SKalle Valo lockdep_assert_held(&mvm->mutex); 871e705c121SKalle Valo 872e705c121SKalle Valo if (!test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status)) 873e705c121SKalle Valo sta_id = iwl_mvm_find_free_sta_id(mvm, 874e705c121SKalle Valo ieee80211_vif_type_p2p(vif)); 875e705c121SKalle Valo else 876e705c121SKalle Valo sta_id = mvm_sta->sta_id; 877e705c121SKalle Valo 878e705c121SKalle Valo if (sta_id == IWL_MVM_STATION_COUNT) 879e705c121SKalle Valo return -ENOSPC; 880e705c121SKalle Valo 881e705c121SKalle Valo spin_lock_init(&mvm_sta->lock); 882e705c121SKalle Valo 883e705c121SKalle Valo mvm_sta->sta_id = sta_id; 884e705c121SKalle Valo mvm_sta->mac_id_n_color = FW_CMD_ID_AND_COLOR(mvmvif->id, 885e705c121SKalle Valo mvmvif->color); 886e705c121SKalle Valo mvm_sta->vif = vif; 887e705c121SKalle Valo mvm_sta->max_agg_bufsize = LINK_QUAL_AGG_FRAME_LIMIT_DEF; 888e705c121SKalle Valo mvm_sta->tx_protection = 0; 889e705c121SKalle Valo mvm_sta->tt_tx_protection = false; 890e705c121SKalle Valo 891e705c121SKalle Valo /* HW restart, don't assume the memory has been zeroed */ 892e705c121SKalle Valo atomic_set(&mvm->pending_frames[sta_id], 0); 893e705c121SKalle Valo mvm_sta->tid_disable_agg = 0xffff; /* No aggs at first */ 894e705c121SKalle Valo mvm_sta->tfd_queue_msk = 0; 895e705c121SKalle Valo 896e3118ad7SLiad Kaufman /* 897e3118ad7SLiad Kaufman * Allocate new queues for a TDLS station, unless we're in DQA mode, 898e3118ad7SLiad Kaufman * and then they'll be allocated dynamically 899e3118ad7SLiad Kaufman */ 900e3118ad7SLiad Kaufman if (!iwl_mvm_is_dqa_supported(mvm) && sta->tdls) { 901e705c121SKalle Valo ret = iwl_mvm_tdls_sta_init(mvm, sta); 902e705c121SKalle Valo if (ret) 903e705c121SKalle Valo return ret; 90424afba76SLiad Kaufman } else if (!iwl_mvm_is_dqa_supported(mvm)) { 905e705c121SKalle Valo for (i = 0; i < IEEE80211_NUM_ACS; i++) 906e705c121SKalle Valo if (vif->hw_queue[i] != IEEE80211_INVAL_HW_QUEUE) 907e705c121SKalle Valo mvm_sta->tfd_queue_msk |= BIT(vif->hw_queue[i]); 908e705c121SKalle Valo } 909e705c121SKalle Valo 910e705c121SKalle Valo /* for HW restart - reset everything but the sequence number */ 91124afba76SLiad Kaufman for (i = 0; i <= IWL_MAX_TID_COUNT; i++) { 912e705c121SKalle Valo u16 seq = mvm_sta->tid_data[i].seq_number; 913e705c121SKalle Valo memset(&mvm_sta->tid_data[i], 0, sizeof(mvm_sta->tid_data[i])); 914e705c121SKalle Valo mvm_sta->tid_data[i].seq_number = seq; 91524afba76SLiad Kaufman 91624afba76SLiad Kaufman if (!iwl_mvm_is_dqa_supported(mvm)) 91724afba76SLiad Kaufman continue; 91824afba76SLiad Kaufman 91924afba76SLiad Kaufman /* 92024afba76SLiad Kaufman * Mark all queues for this STA as unallocated and defer TX 92124afba76SLiad Kaufman * frames until the queue is allocated 92224afba76SLiad Kaufman */ 92324afba76SLiad Kaufman mvm_sta->tid_data[i].txq_id = IEEE80211_INVAL_HW_QUEUE; 92424afba76SLiad Kaufman skb_queue_head_init(&mvm_sta->tid_data[i].deferred_tx_frames); 925e705c121SKalle Valo } 92624afba76SLiad Kaufman mvm_sta->deferred_traffic_tid_map = 0; 927e705c121SKalle Valo mvm_sta->agg_tids = 0; 928e705c121SKalle Valo 929a571f5f6SSara Sharon if (iwl_mvm_has_new_rx_api(mvm) && 930a571f5f6SSara Sharon !test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status)) { 931a571f5f6SSara Sharon dup_data = kcalloc(mvm->trans->num_rx_queues, 932a571f5f6SSara Sharon sizeof(*dup_data), 933a571f5f6SSara Sharon GFP_KERNEL); 934a571f5f6SSara Sharon if (!dup_data) 935a571f5f6SSara Sharon return -ENOMEM; 936a571f5f6SSara Sharon mvm_sta->dup_data = dup_data; 937a571f5f6SSara Sharon } 938a571f5f6SSara Sharon 93924afba76SLiad Kaufman if (iwl_mvm_is_dqa_supported(mvm)) { 940d5216a28SLiad Kaufman ret = iwl_mvm_reserve_sta_stream(mvm, sta, 941d5216a28SLiad Kaufman ieee80211_vif_type_p2p(vif)); 94224afba76SLiad Kaufman if (ret) 94324afba76SLiad Kaufman goto err; 94424afba76SLiad Kaufman } 94524afba76SLiad Kaufman 94624afba76SLiad Kaufman ret = iwl_mvm_sta_send_to_fw(mvm, sta, false, 0); 947e705c121SKalle Valo if (ret) 948e705c121SKalle Valo goto err; 949e705c121SKalle Valo 950e705c121SKalle Valo if (vif->type == NL80211_IFTYPE_STATION) { 951e705c121SKalle Valo if (!sta->tdls) { 952e705c121SKalle Valo WARN_ON(mvmvif->ap_sta_id != IWL_MVM_STATION_COUNT); 953e705c121SKalle Valo mvmvif->ap_sta_id = sta_id; 954e705c121SKalle Valo } else { 955e705c121SKalle Valo WARN_ON(mvmvif->ap_sta_id == IWL_MVM_STATION_COUNT); 956e705c121SKalle Valo } 957e705c121SKalle Valo } 958e705c121SKalle Valo 959e705c121SKalle Valo rcu_assign_pointer(mvm->fw_id_to_mac_id[sta_id], sta); 960e705c121SKalle Valo 961e705c121SKalle Valo return 0; 962e705c121SKalle Valo 963e705c121SKalle Valo err: 964e3118ad7SLiad Kaufman if (!iwl_mvm_is_dqa_supported(mvm) && sta->tdls) 965e705c121SKalle Valo iwl_mvm_tdls_sta_deinit(mvm, sta); 966e705c121SKalle Valo return ret; 967e705c121SKalle Valo } 968e705c121SKalle Valo 969e705c121SKalle Valo int iwl_mvm_update_sta(struct iwl_mvm *mvm, 970e705c121SKalle Valo struct ieee80211_vif *vif, 971e705c121SKalle Valo struct ieee80211_sta *sta) 972e705c121SKalle Valo { 97324afba76SLiad Kaufman return iwl_mvm_sta_send_to_fw(mvm, sta, true, 0); 974e705c121SKalle Valo } 975e705c121SKalle Valo 976e705c121SKalle Valo int iwl_mvm_drain_sta(struct iwl_mvm *mvm, struct iwl_mvm_sta *mvmsta, 977e705c121SKalle Valo bool drain) 978e705c121SKalle Valo { 979e705c121SKalle Valo struct iwl_mvm_add_sta_cmd cmd = {}; 980e705c121SKalle Valo int ret; 981e705c121SKalle Valo u32 status; 982e705c121SKalle Valo 983e705c121SKalle Valo lockdep_assert_held(&mvm->mutex); 984e705c121SKalle Valo 985e705c121SKalle Valo cmd.mac_id_n_color = cpu_to_le32(mvmsta->mac_id_n_color); 986e705c121SKalle Valo cmd.sta_id = mvmsta->sta_id; 987e705c121SKalle Valo cmd.add_modify = STA_MODE_MODIFY; 988e705c121SKalle Valo cmd.station_flags = drain ? cpu_to_le32(STA_FLG_DRAIN_FLOW) : 0; 989e705c121SKalle Valo cmd.station_flags_msk = cpu_to_le32(STA_FLG_DRAIN_FLOW); 990e705c121SKalle Valo 991e705c121SKalle Valo status = ADD_STA_SUCCESS; 992854c5705SSara Sharon ret = iwl_mvm_send_cmd_pdu_status(mvm, ADD_STA, 993854c5705SSara Sharon iwl_mvm_add_sta_cmd_size(mvm), 994e705c121SKalle Valo &cmd, &status); 995e705c121SKalle Valo if (ret) 996e705c121SKalle Valo return ret; 997e705c121SKalle Valo 998837c4da9SSara Sharon switch (status & IWL_ADD_STA_STATUS_MASK) { 999e705c121SKalle Valo case ADD_STA_SUCCESS: 1000e705c121SKalle Valo IWL_DEBUG_INFO(mvm, "Frames for staid %d will drained in fw\n", 1001e705c121SKalle Valo mvmsta->sta_id); 1002e705c121SKalle Valo break; 1003e705c121SKalle Valo default: 1004e705c121SKalle Valo ret = -EIO; 1005e705c121SKalle Valo IWL_ERR(mvm, "Couldn't drain frames for staid %d\n", 1006e705c121SKalle Valo mvmsta->sta_id); 1007e705c121SKalle Valo break; 1008e705c121SKalle Valo } 1009e705c121SKalle Valo 1010e705c121SKalle Valo return ret; 1011e705c121SKalle Valo } 1012e705c121SKalle Valo 1013e705c121SKalle Valo /* 1014e705c121SKalle Valo * Remove a station from the FW table. Before sending the command to remove 1015e705c121SKalle Valo * the station validate that the station is indeed known to the driver (sanity 1016e705c121SKalle Valo * only). 1017e705c121SKalle Valo */ 1018e705c121SKalle Valo static int iwl_mvm_rm_sta_common(struct iwl_mvm *mvm, u8 sta_id) 1019e705c121SKalle Valo { 1020e705c121SKalle Valo struct ieee80211_sta *sta; 1021e705c121SKalle Valo struct iwl_mvm_rm_sta_cmd rm_sta_cmd = { 1022e705c121SKalle Valo .sta_id = sta_id, 1023e705c121SKalle Valo }; 1024e705c121SKalle Valo int ret; 1025e705c121SKalle Valo 1026e705c121SKalle Valo sta = rcu_dereference_protected(mvm->fw_id_to_mac_id[sta_id], 1027e705c121SKalle Valo lockdep_is_held(&mvm->mutex)); 1028e705c121SKalle Valo 1029e705c121SKalle Valo /* Note: internal stations are marked as error values */ 1030e705c121SKalle Valo if (!sta) { 1031e705c121SKalle Valo IWL_ERR(mvm, "Invalid station id\n"); 1032e705c121SKalle Valo return -EINVAL; 1033e705c121SKalle Valo } 1034e705c121SKalle Valo 1035e705c121SKalle Valo ret = iwl_mvm_send_cmd_pdu(mvm, REMOVE_STA, 0, 1036e705c121SKalle Valo sizeof(rm_sta_cmd), &rm_sta_cmd); 1037e705c121SKalle Valo if (ret) { 1038e705c121SKalle Valo IWL_ERR(mvm, "Failed to remove station. Id=%d\n", sta_id); 1039e705c121SKalle Valo return ret; 1040e705c121SKalle Valo } 1041e705c121SKalle Valo 1042e705c121SKalle Valo return 0; 1043e705c121SKalle Valo } 1044e705c121SKalle Valo 1045e705c121SKalle Valo void iwl_mvm_sta_drained_wk(struct work_struct *wk) 1046e705c121SKalle Valo { 1047e705c121SKalle Valo struct iwl_mvm *mvm = container_of(wk, struct iwl_mvm, sta_drained_wk); 1048e705c121SKalle Valo u8 sta_id; 1049e705c121SKalle Valo 1050e705c121SKalle Valo /* 1051e705c121SKalle Valo * The mutex is needed because of the SYNC cmd, but not only: if the 1052e705c121SKalle Valo * work would run concurrently with iwl_mvm_rm_sta, it would run before 1053e705c121SKalle Valo * iwl_mvm_rm_sta sets the station as busy, and exit. Then 1054e705c121SKalle Valo * iwl_mvm_rm_sta would set the station as busy, and nobody will clean 1055e705c121SKalle Valo * that later. 1056e705c121SKalle Valo */ 1057e705c121SKalle Valo mutex_lock(&mvm->mutex); 1058e705c121SKalle Valo 1059e705c121SKalle Valo for_each_set_bit(sta_id, mvm->sta_drained, IWL_MVM_STATION_COUNT) { 1060e705c121SKalle Valo int ret; 1061e705c121SKalle Valo struct ieee80211_sta *sta = 1062e705c121SKalle Valo rcu_dereference_protected(mvm->fw_id_to_mac_id[sta_id], 1063e705c121SKalle Valo lockdep_is_held(&mvm->mutex)); 1064e705c121SKalle Valo 1065e705c121SKalle Valo /* 1066e705c121SKalle Valo * This station is in use or RCU-removed; the latter happens in 1067e705c121SKalle Valo * managed mode, where mac80211 removes the station before we 1068e705c121SKalle Valo * can remove it from firmware (we can only do that after the 1069e705c121SKalle Valo * MAC is marked unassociated), and possibly while the deauth 1070e705c121SKalle Valo * frame to disconnect from the AP is still queued. Then, the 1071e705c121SKalle Valo * station pointer is -ENOENT when the last skb is reclaimed. 1072e705c121SKalle Valo */ 1073e705c121SKalle Valo if (!IS_ERR(sta) || PTR_ERR(sta) == -ENOENT) 1074e705c121SKalle Valo continue; 1075e705c121SKalle Valo 1076e705c121SKalle Valo if (PTR_ERR(sta) == -EINVAL) { 1077e705c121SKalle Valo IWL_ERR(mvm, "Drained sta %d, but it is internal?\n", 1078e705c121SKalle Valo sta_id); 1079e705c121SKalle Valo continue; 1080e705c121SKalle Valo } 1081e705c121SKalle Valo 1082e705c121SKalle Valo if (!sta) { 1083e705c121SKalle Valo IWL_ERR(mvm, "Drained sta %d, but it was NULL?\n", 1084e705c121SKalle Valo sta_id); 1085e705c121SKalle Valo continue; 1086e705c121SKalle Valo } 1087e705c121SKalle Valo 1088e705c121SKalle Valo WARN_ON(PTR_ERR(sta) != -EBUSY); 1089e705c121SKalle Valo /* This station was removed and we waited until it got drained, 1090e705c121SKalle Valo * we can now proceed and remove it. 1091e705c121SKalle Valo */ 1092e705c121SKalle Valo ret = iwl_mvm_rm_sta_common(mvm, sta_id); 1093e705c121SKalle Valo if (ret) { 1094e705c121SKalle Valo IWL_ERR(mvm, 1095e705c121SKalle Valo "Couldn't remove sta %d after it was drained\n", 1096e705c121SKalle Valo sta_id); 1097e705c121SKalle Valo continue; 1098e705c121SKalle Valo } 1099e705c121SKalle Valo RCU_INIT_POINTER(mvm->fw_id_to_mac_id[sta_id], NULL); 1100e705c121SKalle Valo clear_bit(sta_id, mvm->sta_drained); 1101e705c121SKalle Valo 1102e705c121SKalle Valo if (mvm->tfd_drained[sta_id]) { 1103e705c121SKalle Valo unsigned long i, msk = mvm->tfd_drained[sta_id]; 1104e705c121SKalle Valo 1105e705c121SKalle Valo for_each_set_bit(i, &msk, sizeof(msk) * BITS_PER_BYTE) 1106e705c121SKalle Valo iwl_mvm_disable_txq(mvm, i, i, 1107e705c121SKalle Valo IWL_MAX_TID_COUNT, 0); 1108e705c121SKalle Valo 1109e705c121SKalle Valo mvm->tfd_drained[sta_id] = 0; 1110e705c121SKalle Valo IWL_DEBUG_TDLS(mvm, "Drained sta %d, with queues %ld\n", 1111e705c121SKalle Valo sta_id, msk); 1112e705c121SKalle Valo } 1113e705c121SKalle Valo } 1114e705c121SKalle Valo 1115e705c121SKalle Valo mutex_unlock(&mvm->mutex); 1116e705c121SKalle Valo } 1117e705c121SKalle Valo 111824afba76SLiad Kaufman static void iwl_mvm_disable_sta_queues(struct iwl_mvm *mvm, 111924afba76SLiad Kaufman struct ieee80211_vif *vif, 112024afba76SLiad Kaufman struct iwl_mvm_sta *mvm_sta) 112124afba76SLiad Kaufman { 112224afba76SLiad Kaufman int ac; 112324afba76SLiad Kaufman int i; 112424afba76SLiad Kaufman 112524afba76SLiad Kaufman lockdep_assert_held(&mvm->mutex); 112624afba76SLiad Kaufman 112724afba76SLiad Kaufman for (i = 0; i < ARRAY_SIZE(mvm_sta->tid_data); i++) { 112824afba76SLiad Kaufman if (mvm_sta->tid_data[i].txq_id == IEEE80211_INVAL_HW_QUEUE) 112924afba76SLiad Kaufman continue; 113024afba76SLiad Kaufman 113124afba76SLiad Kaufman ac = iwl_mvm_tid_to_ac_queue(i); 113224afba76SLiad Kaufman iwl_mvm_disable_txq(mvm, mvm_sta->tid_data[i].txq_id, 113324afba76SLiad Kaufman vif->hw_queue[ac], i, 0); 113424afba76SLiad Kaufman mvm_sta->tid_data[i].txq_id = IEEE80211_INVAL_HW_QUEUE; 113524afba76SLiad Kaufman } 113624afba76SLiad Kaufman } 113724afba76SLiad Kaufman 1138e705c121SKalle Valo int iwl_mvm_rm_sta(struct iwl_mvm *mvm, 1139e705c121SKalle Valo struct ieee80211_vif *vif, 1140e705c121SKalle Valo struct ieee80211_sta *sta) 1141e705c121SKalle Valo { 1142e705c121SKalle Valo struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 1143e705c121SKalle Valo struct iwl_mvm_sta *mvm_sta = iwl_mvm_sta_from_mac80211(sta); 1144e705c121SKalle Valo int ret; 1145e705c121SKalle Valo 1146e705c121SKalle Valo lockdep_assert_held(&mvm->mutex); 1147e705c121SKalle Valo 1148a571f5f6SSara Sharon if (iwl_mvm_has_new_rx_api(mvm)) 1149a571f5f6SSara Sharon kfree(mvm_sta->dup_data); 1150a571f5f6SSara Sharon 1151a6f035a0SLiad Kaufman if ((vif->type == NL80211_IFTYPE_STATION && 1152a6f035a0SLiad Kaufman mvmvif->ap_sta_id == mvm_sta->sta_id) || 1153a6f035a0SLiad Kaufman iwl_mvm_is_dqa_supported(mvm)){ 1154e705c121SKalle Valo ret = iwl_mvm_drain_sta(mvm, mvm_sta, true); 1155e705c121SKalle Valo if (ret) 1156e705c121SKalle Valo return ret; 1157e705c121SKalle Valo /* flush its queues here since we are freeing mvm_sta */ 1158e705c121SKalle Valo ret = iwl_mvm_flush_tx_path(mvm, mvm_sta->tfd_queue_msk, 0); 1159e705c121SKalle Valo if (ret) 1160e705c121SKalle Valo return ret; 1161e705c121SKalle Valo ret = iwl_trans_wait_tx_queue_empty(mvm->trans, 1162e705c121SKalle Valo mvm_sta->tfd_queue_msk); 1163e705c121SKalle Valo if (ret) 1164e705c121SKalle Valo return ret; 1165e705c121SKalle Valo ret = iwl_mvm_drain_sta(mvm, mvm_sta, false); 1166e705c121SKalle Valo 116724afba76SLiad Kaufman /* If DQA is supported - the queues can be disabled now */ 116824afba76SLiad Kaufman if (iwl_mvm_is_dqa_supported(mvm)) 116924afba76SLiad Kaufman iwl_mvm_disable_sta_queues(mvm, vif, mvm_sta); 117024afba76SLiad Kaufman 1171e3118ad7SLiad Kaufman if (vif->type == NL80211_IFTYPE_STATION && 1172e3118ad7SLiad Kaufman mvmvif->ap_sta_id == mvm_sta->sta_id) { 1173e3118ad7SLiad Kaufman /* if associated - we can't remove the AP STA now */ 1174e705c121SKalle Valo if (vif->bss_conf.assoc) 1175e705c121SKalle Valo return ret; 1176e705c121SKalle Valo 1177e705c121SKalle Valo /* unassoc - go ahead - remove the AP STA now */ 1178e705c121SKalle Valo mvmvif->ap_sta_id = IWL_MVM_STATION_COUNT; 1179e705c121SKalle Valo 1180e705c121SKalle Valo /* clear d0i3_ap_sta_id if no longer relevant */ 1181e705c121SKalle Valo if (mvm->d0i3_ap_sta_id == mvm_sta->sta_id) 1182e705c121SKalle Valo mvm->d0i3_ap_sta_id = IWL_MVM_STATION_COUNT; 1183e705c121SKalle Valo } 1184e3118ad7SLiad Kaufman } 1185e705c121SKalle Valo 1186e705c121SKalle Valo /* 1187e705c121SKalle Valo * This shouldn't happen - the TDLS channel switch should be canceled 1188e705c121SKalle Valo * before the STA is removed. 1189e705c121SKalle Valo */ 1190e705c121SKalle Valo if (WARN_ON_ONCE(mvm->tdls_cs.peer.sta_id == mvm_sta->sta_id)) { 1191e705c121SKalle Valo mvm->tdls_cs.peer.sta_id = IWL_MVM_STATION_COUNT; 1192e705c121SKalle Valo cancel_delayed_work(&mvm->tdls_cs.dwork); 1193e705c121SKalle Valo } 1194e705c121SKalle Valo 1195e705c121SKalle Valo /* 1196e705c121SKalle Valo * Make sure that the tx response code sees the station as -EBUSY and 1197e705c121SKalle Valo * calls the drain worker. 1198e705c121SKalle Valo */ 1199e705c121SKalle Valo spin_lock_bh(&mvm_sta->lock); 1200e705c121SKalle Valo /* 1201e705c121SKalle Valo * There are frames pending on the AC queues for this station. 1202e705c121SKalle Valo * We need to wait until all the frames are drained... 1203e705c121SKalle Valo */ 1204e705c121SKalle Valo if (atomic_read(&mvm->pending_frames[mvm_sta->sta_id])) { 1205e705c121SKalle Valo rcu_assign_pointer(mvm->fw_id_to_mac_id[mvm_sta->sta_id], 1206e705c121SKalle Valo ERR_PTR(-EBUSY)); 1207e705c121SKalle Valo spin_unlock_bh(&mvm_sta->lock); 1208e705c121SKalle Valo 1209e705c121SKalle Valo /* disable TDLS sta queues on drain complete */ 1210e705c121SKalle Valo if (sta->tdls) { 1211e705c121SKalle Valo mvm->tfd_drained[mvm_sta->sta_id] = 1212e705c121SKalle Valo mvm_sta->tfd_queue_msk; 1213e705c121SKalle Valo IWL_DEBUG_TDLS(mvm, "Draining TDLS sta %d\n", 1214e705c121SKalle Valo mvm_sta->sta_id); 1215e705c121SKalle Valo } 1216e705c121SKalle Valo 1217e705c121SKalle Valo ret = iwl_mvm_drain_sta(mvm, mvm_sta, true); 1218e705c121SKalle Valo } else { 1219e705c121SKalle Valo spin_unlock_bh(&mvm_sta->lock); 1220e705c121SKalle Valo 1221e3118ad7SLiad Kaufman if (!iwl_mvm_is_dqa_supported(mvm) && sta->tdls) 1222e705c121SKalle Valo iwl_mvm_tdls_sta_deinit(mvm, sta); 1223e705c121SKalle Valo 1224e705c121SKalle Valo ret = iwl_mvm_rm_sta_common(mvm, mvm_sta->sta_id); 1225e705c121SKalle Valo RCU_INIT_POINTER(mvm->fw_id_to_mac_id[mvm_sta->sta_id], NULL); 1226e705c121SKalle Valo } 1227e705c121SKalle Valo 1228e705c121SKalle Valo return ret; 1229e705c121SKalle Valo } 1230e705c121SKalle Valo 1231e705c121SKalle Valo int iwl_mvm_rm_sta_id(struct iwl_mvm *mvm, 1232e705c121SKalle Valo struct ieee80211_vif *vif, 1233e705c121SKalle Valo u8 sta_id) 1234e705c121SKalle Valo { 1235e705c121SKalle Valo int ret = iwl_mvm_rm_sta_common(mvm, sta_id); 1236e705c121SKalle Valo 1237e705c121SKalle Valo lockdep_assert_held(&mvm->mutex); 1238e705c121SKalle Valo 1239e705c121SKalle Valo RCU_INIT_POINTER(mvm->fw_id_to_mac_id[sta_id], NULL); 1240e705c121SKalle Valo return ret; 1241e705c121SKalle Valo } 1242e705c121SKalle Valo 12430e39eb03SChaya Rachel Ivgi int iwl_mvm_allocate_int_sta(struct iwl_mvm *mvm, 1244e705c121SKalle Valo struct iwl_mvm_int_sta *sta, 1245e705c121SKalle Valo u32 qmask, enum nl80211_iftype iftype) 1246e705c121SKalle Valo { 1247e705c121SKalle Valo if (!test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status)) { 1248e705c121SKalle Valo sta->sta_id = iwl_mvm_find_free_sta_id(mvm, iftype); 1249e705c121SKalle Valo if (WARN_ON_ONCE(sta->sta_id == IWL_MVM_STATION_COUNT)) 1250e705c121SKalle Valo return -ENOSPC; 1251e705c121SKalle Valo } 1252e705c121SKalle Valo 1253e705c121SKalle Valo sta->tfd_queue_msk = qmask; 1254e705c121SKalle Valo 1255e705c121SKalle Valo /* put a non-NULL value so iterating over the stations won't stop */ 1256e705c121SKalle Valo rcu_assign_pointer(mvm->fw_id_to_mac_id[sta->sta_id], ERR_PTR(-EINVAL)); 1257e705c121SKalle Valo return 0; 1258e705c121SKalle Valo } 1259e705c121SKalle Valo 1260e705c121SKalle Valo static void iwl_mvm_dealloc_int_sta(struct iwl_mvm *mvm, 1261e705c121SKalle Valo struct iwl_mvm_int_sta *sta) 1262e705c121SKalle Valo { 1263e705c121SKalle Valo RCU_INIT_POINTER(mvm->fw_id_to_mac_id[sta->sta_id], NULL); 1264e705c121SKalle Valo memset(sta, 0, sizeof(struct iwl_mvm_int_sta)); 1265e705c121SKalle Valo sta->sta_id = IWL_MVM_STATION_COUNT; 1266e705c121SKalle Valo } 1267e705c121SKalle Valo 1268e705c121SKalle Valo static int iwl_mvm_add_int_sta_common(struct iwl_mvm *mvm, 1269e705c121SKalle Valo struct iwl_mvm_int_sta *sta, 1270e705c121SKalle Valo const u8 *addr, 1271e705c121SKalle Valo u16 mac_id, u16 color) 1272e705c121SKalle Valo { 1273e705c121SKalle Valo struct iwl_mvm_add_sta_cmd cmd; 1274e705c121SKalle Valo int ret; 1275e705c121SKalle Valo u32 status; 1276e705c121SKalle Valo 1277e705c121SKalle Valo lockdep_assert_held(&mvm->mutex); 1278e705c121SKalle Valo 1279e705c121SKalle Valo memset(&cmd, 0, sizeof(cmd)); 1280e705c121SKalle Valo cmd.sta_id = sta->sta_id; 1281e705c121SKalle Valo cmd.mac_id_n_color = cpu_to_le32(FW_CMD_ID_AND_COLOR(mac_id, 1282e705c121SKalle Valo color)); 1283e705c121SKalle Valo 1284e705c121SKalle Valo cmd.tfd_queue_msk = cpu_to_le32(sta->tfd_queue_msk); 1285cf0cda19SLiad Kaufman cmd.tid_disable_tx = cpu_to_le16(0xffff); 1286e705c121SKalle Valo 1287e705c121SKalle Valo if (addr) 1288e705c121SKalle Valo memcpy(cmd.addr, addr, ETH_ALEN); 1289e705c121SKalle Valo 1290854c5705SSara Sharon ret = iwl_mvm_send_cmd_pdu_status(mvm, ADD_STA, 1291854c5705SSara Sharon iwl_mvm_add_sta_cmd_size(mvm), 1292e705c121SKalle Valo &cmd, &status); 1293e705c121SKalle Valo if (ret) 1294e705c121SKalle Valo return ret; 1295e705c121SKalle Valo 1296837c4da9SSara Sharon switch (status & IWL_ADD_STA_STATUS_MASK) { 1297e705c121SKalle Valo case ADD_STA_SUCCESS: 1298e705c121SKalle Valo IWL_DEBUG_INFO(mvm, "Internal station added.\n"); 1299e705c121SKalle Valo return 0; 1300e705c121SKalle Valo default: 1301e705c121SKalle Valo ret = -EIO; 1302e705c121SKalle Valo IWL_ERR(mvm, "Add internal station failed, status=0x%x\n", 1303e705c121SKalle Valo status); 1304e705c121SKalle Valo break; 1305e705c121SKalle Valo } 1306e705c121SKalle Valo return ret; 1307e705c121SKalle Valo } 1308e705c121SKalle Valo 1309e705c121SKalle Valo int iwl_mvm_add_aux_sta(struct iwl_mvm *mvm) 1310e705c121SKalle Valo { 1311e705c121SKalle Valo unsigned int wdg_timeout = iwlmvm_mod_params.tfd_q_hang_detect ? 1312e705c121SKalle Valo mvm->cfg->base_params->wd_timeout : 1313e705c121SKalle Valo IWL_WATCHDOG_DISABLED; 1314e705c121SKalle Valo int ret; 1315e705c121SKalle Valo 1316e705c121SKalle Valo lockdep_assert_held(&mvm->mutex); 1317e705c121SKalle Valo 1318e705c121SKalle Valo /* Map Aux queue to fifo - needs to happen before adding Aux station */ 131928d0793eSLiad Kaufman if (!iwl_mvm_is_dqa_supported(mvm)) 1320e705c121SKalle Valo iwl_mvm_enable_ac_txq(mvm, mvm->aux_queue, mvm->aux_queue, 1321e705c121SKalle Valo IWL_MVM_TX_FIFO_MCAST, 0, wdg_timeout); 1322e705c121SKalle Valo 1323e705c121SKalle Valo /* Allocate aux station and assign to it the aux queue */ 1324e705c121SKalle Valo ret = iwl_mvm_allocate_int_sta(mvm, &mvm->aux_sta, BIT(mvm->aux_queue), 1325e705c121SKalle Valo NL80211_IFTYPE_UNSPECIFIED); 1326e705c121SKalle Valo if (ret) 1327e705c121SKalle Valo return ret; 1328e705c121SKalle Valo 132928d0793eSLiad Kaufman if (iwl_mvm_is_dqa_supported(mvm)) { 133028d0793eSLiad Kaufman struct iwl_trans_txq_scd_cfg cfg = { 133128d0793eSLiad Kaufman .fifo = IWL_MVM_TX_FIFO_MCAST, 133228d0793eSLiad Kaufman .sta_id = mvm->aux_sta.sta_id, 133328d0793eSLiad Kaufman .tid = IWL_MAX_TID_COUNT, 133428d0793eSLiad Kaufman .aggregate = false, 133528d0793eSLiad Kaufman .frame_limit = IWL_FRAME_LIMIT, 133628d0793eSLiad Kaufman }; 133728d0793eSLiad Kaufman 133828d0793eSLiad Kaufman iwl_mvm_enable_txq(mvm, mvm->aux_queue, mvm->aux_queue, 0, &cfg, 133928d0793eSLiad Kaufman wdg_timeout); 134028d0793eSLiad Kaufman } 134128d0793eSLiad Kaufman 1342e705c121SKalle Valo ret = iwl_mvm_add_int_sta_common(mvm, &mvm->aux_sta, NULL, 1343e705c121SKalle Valo MAC_INDEX_AUX, 0); 1344e705c121SKalle Valo 1345e705c121SKalle Valo if (ret) 1346e705c121SKalle Valo iwl_mvm_dealloc_int_sta(mvm, &mvm->aux_sta); 1347e705c121SKalle Valo return ret; 1348e705c121SKalle Valo } 1349e705c121SKalle Valo 13500e39eb03SChaya Rachel Ivgi int iwl_mvm_add_snif_sta(struct iwl_mvm *mvm, struct ieee80211_vif *vif) 13510e39eb03SChaya Rachel Ivgi { 13520e39eb03SChaya Rachel Ivgi struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 13530e39eb03SChaya Rachel Ivgi 13540e39eb03SChaya Rachel Ivgi lockdep_assert_held(&mvm->mutex); 13550e39eb03SChaya Rachel Ivgi return iwl_mvm_add_int_sta_common(mvm, &mvm->snif_sta, vif->addr, 13560e39eb03SChaya Rachel Ivgi mvmvif->id, 0); 13570e39eb03SChaya Rachel Ivgi } 13580e39eb03SChaya Rachel Ivgi 13590e39eb03SChaya Rachel Ivgi int iwl_mvm_rm_snif_sta(struct iwl_mvm *mvm, struct ieee80211_vif *vif) 13600e39eb03SChaya Rachel Ivgi { 13610e39eb03SChaya Rachel Ivgi int ret; 13620e39eb03SChaya Rachel Ivgi 13630e39eb03SChaya Rachel Ivgi lockdep_assert_held(&mvm->mutex); 13640e39eb03SChaya Rachel Ivgi 13650e39eb03SChaya Rachel Ivgi ret = iwl_mvm_rm_sta_common(mvm, mvm->snif_sta.sta_id); 13660e39eb03SChaya Rachel Ivgi if (ret) 13670e39eb03SChaya Rachel Ivgi IWL_WARN(mvm, "Failed sending remove station\n"); 13680e39eb03SChaya Rachel Ivgi 13690e39eb03SChaya Rachel Ivgi return ret; 13700e39eb03SChaya Rachel Ivgi } 13710e39eb03SChaya Rachel Ivgi 13720e39eb03SChaya Rachel Ivgi void iwl_mvm_dealloc_snif_sta(struct iwl_mvm *mvm) 13730e39eb03SChaya Rachel Ivgi { 13740e39eb03SChaya Rachel Ivgi iwl_mvm_dealloc_int_sta(mvm, &mvm->snif_sta); 13750e39eb03SChaya Rachel Ivgi } 13760e39eb03SChaya Rachel Ivgi 1377e705c121SKalle Valo void iwl_mvm_del_aux_sta(struct iwl_mvm *mvm) 1378e705c121SKalle Valo { 1379e705c121SKalle Valo lockdep_assert_held(&mvm->mutex); 1380e705c121SKalle Valo 1381e705c121SKalle Valo iwl_mvm_dealloc_int_sta(mvm, &mvm->aux_sta); 1382e705c121SKalle Valo } 1383e705c121SKalle Valo 1384e705c121SKalle Valo /* 1385e705c121SKalle Valo * Send the add station command for the vif's broadcast station. 1386e705c121SKalle Valo * Assumes that the station was already allocated. 1387e705c121SKalle Valo * 1388e705c121SKalle Valo * @mvm: the mvm component 1389e705c121SKalle Valo * @vif: the interface to which the broadcast station is added 1390e705c121SKalle Valo * @bsta: the broadcast station to add. 1391e705c121SKalle Valo */ 1392e705c121SKalle Valo int iwl_mvm_send_add_bcast_sta(struct iwl_mvm *mvm, struct ieee80211_vif *vif) 1393e705c121SKalle Valo { 1394e705c121SKalle Valo struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 1395e705c121SKalle Valo struct iwl_mvm_int_sta *bsta = &mvmvif->bcast_sta; 1396e705c121SKalle Valo static const u8 _baddr[] = {0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF}; 1397e705c121SKalle Valo const u8 *baddr = _baddr; 1398e705c121SKalle Valo 1399e705c121SKalle Valo lockdep_assert_held(&mvm->mutex); 1400e705c121SKalle Valo 1401de24f638SLiad Kaufman if (iwl_mvm_is_dqa_supported(mvm)) { 1402de24f638SLiad Kaufman struct iwl_trans_txq_scd_cfg cfg = { 1403de24f638SLiad Kaufman .fifo = IWL_MVM_TX_FIFO_VO, 1404de24f638SLiad Kaufman .sta_id = mvmvif->bcast_sta.sta_id, 1405de24f638SLiad Kaufman .tid = IWL_MAX_TID_COUNT, 1406de24f638SLiad Kaufman .aggregate = false, 1407de24f638SLiad Kaufman .frame_limit = IWL_FRAME_LIMIT, 1408de24f638SLiad Kaufman }; 1409de24f638SLiad Kaufman unsigned int wdg_timeout = 1410de24f638SLiad Kaufman iwl_mvm_get_wd_timeout(mvm, vif, false, false); 1411de24f638SLiad Kaufman int queue; 1412de24f638SLiad Kaufman 1413de24f638SLiad Kaufman if ((vif->type == NL80211_IFTYPE_AP) && 1414de24f638SLiad Kaufman (mvmvif->bcast_sta.tfd_queue_msk & 1415de24f638SLiad Kaufman BIT(IWL_MVM_DQA_AP_PROBE_RESP_QUEUE))) 1416de24f638SLiad Kaufman queue = IWL_MVM_DQA_AP_PROBE_RESP_QUEUE; 14174c965139SLiad Kaufman else if ((vif->type == NL80211_IFTYPE_P2P_DEVICE) && 14184c965139SLiad Kaufman (mvmvif->bcast_sta.tfd_queue_msk & 14194c965139SLiad Kaufman BIT(IWL_MVM_DQA_P2P_DEVICE_QUEUE))) 14204c965139SLiad Kaufman queue = IWL_MVM_DQA_P2P_DEVICE_QUEUE; 1421de24f638SLiad Kaufman else if (WARN(1, "Missed required TXQ for adding bcast STA\n")) 1422de24f638SLiad Kaufman return -EINVAL; 1423de24f638SLiad Kaufman 1424de24f638SLiad Kaufman iwl_mvm_enable_txq(mvm, queue, vif->hw_queue[0], 0, &cfg, 1425de24f638SLiad Kaufman wdg_timeout); 1426de24f638SLiad Kaufman } 1427de24f638SLiad Kaufman 1428e705c121SKalle Valo if (vif->type == NL80211_IFTYPE_ADHOC) 1429e705c121SKalle Valo baddr = vif->bss_conf.bssid; 1430e705c121SKalle Valo 1431e705c121SKalle Valo if (WARN_ON_ONCE(bsta->sta_id == IWL_MVM_STATION_COUNT)) 1432e705c121SKalle Valo return -ENOSPC; 1433e705c121SKalle Valo 1434e705c121SKalle Valo return iwl_mvm_add_int_sta_common(mvm, bsta, baddr, 1435e705c121SKalle Valo mvmvif->id, mvmvif->color); 1436e705c121SKalle Valo } 1437e705c121SKalle Valo 1438e705c121SKalle Valo /* Send the FW a request to remove the station from it's internal data 1439e705c121SKalle Valo * structures, but DO NOT remove the entry from the local data structures. */ 1440e705c121SKalle Valo int iwl_mvm_send_rm_bcast_sta(struct iwl_mvm *mvm, struct ieee80211_vif *vif) 1441e705c121SKalle Valo { 1442e705c121SKalle Valo struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 1443e705c121SKalle Valo int ret; 1444e705c121SKalle Valo 1445e705c121SKalle Valo lockdep_assert_held(&mvm->mutex); 1446e705c121SKalle Valo 1447e705c121SKalle Valo ret = iwl_mvm_rm_sta_common(mvm, mvmvif->bcast_sta.sta_id); 1448e705c121SKalle Valo if (ret) 1449e705c121SKalle Valo IWL_WARN(mvm, "Failed sending remove station\n"); 1450e705c121SKalle Valo return ret; 1451e705c121SKalle Valo } 1452e705c121SKalle Valo 1453e705c121SKalle Valo int iwl_mvm_alloc_bcast_sta(struct iwl_mvm *mvm, struct ieee80211_vif *vif) 1454e705c121SKalle Valo { 1455e705c121SKalle Valo struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 1456de24f638SLiad Kaufman u32 qmask = 0; 1457e705c121SKalle Valo 1458e705c121SKalle Valo lockdep_assert_held(&mvm->mutex); 1459e705c121SKalle Valo 1460de24f638SLiad Kaufman if (!iwl_mvm_is_dqa_supported(mvm)) 1461e705c121SKalle Valo qmask = iwl_mvm_mac_get_queues_mask(vif); 1462e705c121SKalle Valo 1463de24f638SLiad Kaufman if (vif->type == NL80211_IFTYPE_AP) { 1464e705c121SKalle Valo /* 1465e705c121SKalle Valo * The firmware defines the TFD queue mask to only be relevant 1466e705c121SKalle Valo * for *unicast* queues, so the multicast (CAB) queue shouldn't 1467e705c121SKalle Valo * be included. 1468e705c121SKalle Valo */ 1469e705c121SKalle Valo qmask &= ~BIT(vif->cab_queue); 1470e705c121SKalle Valo 1471de24f638SLiad Kaufman if (iwl_mvm_is_dqa_supported(mvm)) 1472de24f638SLiad Kaufman qmask |= BIT(IWL_MVM_DQA_AP_PROBE_RESP_QUEUE); 14734c965139SLiad Kaufman } else if (iwl_mvm_is_dqa_supported(mvm) && 14744c965139SLiad Kaufman vif->type == NL80211_IFTYPE_P2P_DEVICE) { 14754c965139SLiad Kaufman qmask |= BIT(IWL_MVM_DQA_P2P_DEVICE_QUEUE); 1476de24f638SLiad Kaufman } 1477de24f638SLiad Kaufman 1478e705c121SKalle Valo return iwl_mvm_allocate_int_sta(mvm, &mvmvif->bcast_sta, qmask, 1479e705c121SKalle Valo ieee80211_vif_type_p2p(vif)); 1480e705c121SKalle Valo } 1481e705c121SKalle Valo 1482e705c121SKalle Valo /* Allocate a new station entry for the broadcast station to the given vif, 1483e705c121SKalle Valo * and send it to the FW. 1484e705c121SKalle Valo * Note that each P2P mac should have its own broadcast station. 1485e705c121SKalle Valo * 1486e705c121SKalle Valo * @mvm: the mvm component 1487e705c121SKalle Valo * @vif: the interface to which the broadcast station is added 1488e705c121SKalle Valo * @bsta: the broadcast station to add. */ 1489e705c121SKalle Valo int iwl_mvm_add_bcast_sta(struct iwl_mvm *mvm, struct ieee80211_vif *vif) 1490e705c121SKalle Valo { 1491e705c121SKalle Valo struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 1492e705c121SKalle Valo struct iwl_mvm_int_sta *bsta = &mvmvif->bcast_sta; 1493e705c121SKalle Valo int ret; 1494e705c121SKalle Valo 1495e705c121SKalle Valo lockdep_assert_held(&mvm->mutex); 1496e705c121SKalle Valo 1497e705c121SKalle Valo ret = iwl_mvm_alloc_bcast_sta(mvm, vif); 1498e705c121SKalle Valo if (ret) 1499e705c121SKalle Valo return ret; 1500e705c121SKalle Valo 1501e705c121SKalle Valo ret = iwl_mvm_send_add_bcast_sta(mvm, vif); 1502e705c121SKalle Valo 1503e705c121SKalle Valo if (ret) 1504e705c121SKalle Valo iwl_mvm_dealloc_int_sta(mvm, bsta); 1505e705c121SKalle Valo 1506e705c121SKalle Valo return ret; 1507e705c121SKalle Valo } 1508e705c121SKalle Valo 1509e705c121SKalle Valo void iwl_mvm_dealloc_bcast_sta(struct iwl_mvm *mvm, struct ieee80211_vif *vif) 1510e705c121SKalle Valo { 1511e705c121SKalle Valo struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 1512e705c121SKalle Valo 1513e705c121SKalle Valo iwl_mvm_dealloc_int_sta(mvm, &mvmvif->bcast_sta); 1514e705c121SKalle Valo } 1515e705c121SKalle Valo 1516e705c121SKalle Valo /* 1517e705c121SKalle Valo * Send the FW a request to remove the station from it's internal data 1518e705c121SKalle Valo * structures, and in addition remove it from the local data structure. 1519e705c121SKalle Valo */ 1520e705c121SKalle Valo int iwl_mvm_rm_bcast_sta(struct iwl_mvm *mvm, struct ieee80211_vif *vif) 1521e705c121SKalle Valo { 1522e705c121SKalle Valo int ret; 1523e705c121SKalle Valo 1524e705c121SKalle Valo lockdep_assert_held(&mvm->mutex); 1525e705c121SKalle Valo 1526e705c121SKalle Valo ret = iwl_mvm_send_rm_bcast_sta(mvm, vif); 1527e705c121SKalle Valo 1528e705c121SKalle Valo iwl_mvm_dealloc_bcast_sta(mvm, vif); 1529e705c121SKalle Valo 1530e705c121SKalle Valo return ret; 1531e705c121SKalle Valo } 1532e705c121SKalle Valo 1533e705c121SKalle Valo #define IWL_MAX_RX_BA_SESSIONS 16 1534e705c121SKalle Valo 1535b915c101SSara Sharon static void iwl_mvm_sync_rxq_del_ba(struct iwl_mvm *mvm, u8 baid) 153610b2b201SSara Sharon { 1537b915c101SSara Sharon struct iwl_mvm_delba_notif notif = { 1538b915c101SSara Sharon .metadata.type = IWL_MVM_RXQ_NOTIF_DEL_BA, 1539b915c101SSara Sharon .metadata.sync = 1, 1540b915c101SSara Sharon .delba.baid = baid, 1541b915c101SSara Sharon }; 1542b915c101SSara Sharon iwl_mvm_sync_rx_queues_internal(mvm, (void *)¬if, sizeof(notif)); 154310b2b201SSara Sharon }; 154410b2b201SSara Sharon 1545b915c101SSara Sharon static void iwl_mvm_free_reorder(struct iwl_mvm *mvm, 1546b915c101SSara Sharon struct iwl_mvm_baid_data *data) 1547b915c101SSara Sharon { 1548b915c101SSara Sharon int i; 1549b915c101SSara Sharon 1550b915c101SSara Sharon iwl_mvm_sync_rxq_del_ba(mvm, data->baid); 1551b915c101SSara Sharon 1552b915c101SSara Sharon for (i = 0; i < mvm->trans->num_rx_queues; i++) { 1553b915c101SSara Sharon int j; 1554b915c101SSara Sharon struct iwl_mvm_reorder_buffer *reorder_buf = 1555b915c101SSara Sharon &data->reorder_buf[i]; 1556b915c101SSara Sharon 15570690405fSSara Sharon spin_lock_bh(&reorder_buf->lock); 15580690405fSSara Sharon if (likely(!reorder_buf->num_stored)) { 15590690405fSSara Sharon spin_unlock_bh(&reorder_buf->lock); 1560b915c101SSara Sharon continue; 15610690405fSSara Sharon } 1562b915c101SSara Sharon 1563b915c101SSara Sharon /* 1564b915c101SSara Sharon * This shouldn't happen in regular DELBA since the internal 1565b915c101SSara Sharon * delBA notification should trigger a release of all frames in 1566b915c101SSara Sharon * the reorder buffer. 1567b915c101SSara Sharon */ 1568b915c101SSara Sharon WARN_ON(1); 1569b915c101SSara Sharon 1570b915c101SSara Sharon for (j = 0; j < reorder_buf->buf_size; j++) 1571b915c101SSara Sharon __skb_queue_purge(&reorder_buf->entries[j]); 15720690405fSSara Sharon /* 15730690405fSSara Sharon * Prevent timer re-arm. This prevents a very far fetched case 15740690405fSSara Sharon * where we timed out on the notification. There may be prior 15750690405fSSara Sharon * RX frames pending in the RX queue before the notification 15760690405fSSara Sharon * that might get processed between now and the actual deletion 15770690405fSSara Sharon * and we would re-arm the timer although we are deleting the 15780690405fSSara Sharon * reorder buffer. 15790690405fSSara Sharon */ 15800690405fSSara Sharon reorder_buf->removed = true; 15810690405fSSara Sharon spin_unlock_bh(&reorder_buf->lock); 15820690405fSSara Sharon del_timer_sync(&reorder_buf->reorder_timer); 1583b915c101SSara Sharon } 1584b915c101SSara Sharon } 1585b915c101SSara Sharon 1586b915c101SSara Sharon static void iwl_mvm_init_reorder_buffer(struct iwl_mvm *mvm, 1587b915c101SSara Sharon u32 sta_id, 1588b915c101SSara Sharon struct iwl_mvm_baid_data *data, 1589b915c101SSara Sharon u16 ssn, u8 buf_size) 1590b915c101SSara Sharon { 1591b915c101SSara Sharon int i; 1592b915c101SSara Sharon 1593b915c101SSara Sharon for (i = 0; i < mvm->trans->num_rx_queues; i++) { 1594b915c101SSara Sharon struct iwl_mvm_reorder_buffer *reorder_buf = 1595b915c101SSara Sharon &data->reorder_buf[i]; 1596b915c101SSara Sharon int j; 1597b915c101SSara Sharon 1598b915c101SSara Sharon reorder_buf->num_stored = 0; 1599b915c101SSara Sharon reorder_buf->head_sn = ssn; 1600b915c101SSara Sharon reorder_buf->buf_size = buf_size; 16010690405fSSara Sharon /* rx reorder timer */ 16020690405fSSara Sharon reorder_buf->reorder_timer.function = 16030690405fSSara Sharon iwl_mvm_reorder_timer_expired; 16040690405fSSara Sharon reorder_buf->reorder_timer.data = (unsigned long)reorder_buf; 16050690405fSSara Sharon init_timer(&reorder_buf->reorder_timer); 16060690405fSSara Sharon spin_lock_init(&reorder_buf->lock); 16070690405fSSara Sharon reorder_buf->mvm = mvm; 1608b915c101SSara Sharon reorder_buf->queue = i; 1609b915c101SSara Sharon reorder_buf->sta_id = sta_id; 1610b915c101SSara Sharon for (j = 0; j < reorder_buf->buf_size; j++) 1611b915c101SSara Sharon __skb_queue_head_init(&reorder_buf->entries[j]); 1612b915c101SSara Sharon } 161310b2b201SSara Sharon } 161410b2b201SSara Sharon 1615e705c121SKalle Valo int iwl_mvm_sta_rx_agg(struct iwl_mvm *mvm, struct ieee80211_sta *sta, 161610b2b201SSara Sharon int tid, u16 ssn, bool start, u8 buf_size, u16 timeout) 1617e705c121SKalle Valo { 1618e705c121SKalle Valo struct iwl_mvm_sta *mvm_sta = iwl_mvm_sta_from_mac80211(sta); 1619e705c121SKalle Valo struct iwl_mvm_add_sta_cmd cmd = {}; 162010b2b201SSara Sharon struct iwl_mvm_baid_data *baid_data = NULL; 1621e705c121SKalle Valo int ret; 1622e705c121SKalle Valo u32 status; 1623e705c121SKalle Valo 1624e705c121SKalle Valo lockdep_assert_held(&mvm->mutex); 1625e705c121SKalle Valo 1626e705c121SKalle Valo if (start && mvm->rx_ba_sessions >= IWL_MAX_RX_BA_SESSIONS) { 1627e705c121SKalle Valo IWL_WARN(mvm, "Not enough RX BA SESSIONS\n"); 1628e705c121SKalle Valo return -ENOSPC; 1629e705c121SKalle Valo } 1630e705c121SKalle Valo 163110b2b201SSara Sharon if (iwl_mvm_has_new_rx_api(mvm) && start) { 163210b2b201SSara Sharon /* 163310b2b201SSara Sharon * Allocate here so if allocation fails we can bail out early 163410b2b201SSara Sharon * before starting the BA session in the firmware 163510b2b201SSara Sharon */ 1636b915c101SSara Sharon baid_data = kzalloc(sizeof(*baid_data) + 1637b915c101SSara Sharon mvm->trans->num_rx_queues * 1638b915c101SSara Sharon sizeof(baid_data->reorder_buf[0]), 1639b915c101SSara Sharon GFP_KERNEL); 164010b2b201SSara Sharon if (!baid_data) 164110b2b201SSara Sharon return -ENOMEM; 164210b2b201SSara Sharon } 164310b2b201SSara Sharon 1644e705c121SKalle Valo cmd.mac_id_n_color = cpu_to_le32(mvm_sta->mac_id_n_color); 1645e705c121SKalle Valo cmd.sta_id = mvm_sta->sta_id; 1646e705c121SKalle Valo cmd.add_modify = STA_MODE_MODIFY; 1647e705c121SKalle Valo if (start) { 1648e705c121SKalle Valo cmd.add_immediate_ba_tid = (u8) tid; 1649e705c121SKalle Valo cmd.add_immediate_ba_ssn = cpu_to_le16(ssn); 1650854c5705SSara Sharon cmd.rx_ba_window = cpu_to_le16((u16)buf_size); 1651e705c121SKalle Valo } else { 1652e705c121SKalle Valo cmd.remove_immediate_ba_tid = (u8) tid; 1653e705c121SKalle Valo } 1654e705c121SKalle Valo cmd.modify_mask = start ? STA_MODIFY_ADD_BA_TID : 1655e705c121SKalle Valo STA_MODIFY_REMOVE_BA_TID; 1656e705c121SKalle Valo 1657e705c121SKalle Valo status = ADD_STA_SUCCESS; 1658854c5705SSara Sharon ret = iwl_mvm_send_cmd_pdu_status(mvm, ADD_STA, 1659854c5705SSara Sharon iwl_mvm_add_sta_cmd_size(mvm), 1660e705c121SKalle Valo &cmd, &status); 1661e705c121SKalle Valo if (ret) 166210b2b201SSara Sharon goto out_free; 1663e705c121SKalle Valo 1664837c4da9SSara Sharon switch (status & IWL_ADD_STA_STATUS_MASK) { 1665e705c121SKalle Valo case ADD_STA_SUCCESS: 1666e705c121SKalle Valo IWL_DEBUG_INFO(mvm, "RX BA Session %sed in fw\n", 1667e705c121SKalle Valo start ? "start" : "stopp"); 1668e705c121SKalle Valo break; 1669e705c121SKalle Valo case ADD_STA_IMMEDIATE_BA_FAILURE: 1670e705c121SKalle Valo IWL_WARN(mvm, "RX BA Session refused by fw\n"); 1671e705c121SKalle Valo ret = -ENOSPC; 1672e705c121SKalle Valo break; 1673e705c121SKalle Valo default: 1674e705c121SKalle Valo ret = -EIO; 1675e705c121SKalle Valo IWL_ERR(mvm, "RX BA Session failed %sing, status 0x%x\n", 1676e705c121SKalle Valo start ? "start" : "stopp", status); 1677e705c121SKalle Valo break; 1678e705c121SKalle Valo } 1679e705c121SKalle Valo 168010b2b201SSara Sharon if (ret) 168110b2b201SSara Sharon goto out_free; 168210b2b201SSara Sharon 168310b2b201SSara Sharon if (start) { 168410b2b201SSara Sharon u8 baid; 168510b2b201SSara Sharon 1686e705c121SKalle Valo mvm->rx_ba_sessions++; 168710b2b201SSara Sharon 168810b2b201SSara Sharon if (!iwl_mvm_has_new_rx_api(mvm)) 168910b2b201SSara Sharon return 0; 169010b2b201SSara Sharon 169110b2b201SSara Sharon if (WARN_ON(!(status & IWL_ADD_STA_BAID_VALID_MASK))) { 169210b2b201SSara Sharon ret = -EINVAL; 169310b2b201SSara Sharon goto out_free; 169410b2b201SSara Sharon } 169510b2b201SSara Sharon baid = (u8)((status & IWL_ADD_STA_BAID_MASK) >> 169610b2b201SSara Sharon IWL_ADD_STA_BAID_SHIFT); 169710b2b201SSara Sharon baid_data->baid = baid; 169810b2b201SSara Sharon baid_data->timeout = timeout; 169910b2b201SSara Sharon baid_data->last_rx = jiffies; 170010b2b201SSara Sharon init_timer(&baid_data->session_timer); 170110b2b201SSara Sharon baid_data->session_timer.function = 170210b2b201SSara Sharon iwl_mvm_rx_agg_session_expired; 170310b2b201SSara Sharon baid_data->session_timer.data = 170410b2b201SSara Sharon (unsigned long)&mvm->baid_map[baid]; 170510b2b201SSara Sharon baid_data->mvm = mvm; 170610b2b201SSara Sharon baid_data->tid = tid; 170710b2b201SSara Sharon baid_data->sta_id = mvm_sta->sta_id; 170810b2b201SSara Sharon 170910b2b201SSara Sharon mvm_sta->tid_to_baid[tid] = baid; 171010b2b201SSara Sharon if (timeout) 171110b2b201SSara Sharon mod_timer(&baid_data->session_timer, 171210b2b201SSara Sharon TU_TO_EXP_TIME(timeout * 2)); 171310b2b201SSara Sharon 1714b915c101SSara Sharon iwl_mvm_init_reorder_buffer(mvm, mvm_sta->sta_id, 1715b915c101SSara Sharon baid_data, ssn, buf_size); 171610b2b201SSara Sharon /* 171710b2b201SSara Sharon * protect the BA data with RCU to cover a case where our 171810b2b201SSara Sharon * internal RX sync mechanism will timeout (not that it's 171910b2b201SSara Sharon * supposed to happen) and we will free the session data while 172010b2b201SSara Sharon * RX is being processed in parallel 172110b2b201SSara Sharon */ 172210b2b201SSara Sharon WARN_ON(rcu_access_pointer(mvm->baid_map[baid])); 172310b2b201SSara Sharon rcu_assign_pointer(mvm->baid_map[baid], baid_data); 172410b2b201SSara Sharon } else if (mvm->rx_ba_sessions > 0) { 172510b2b201SSara Sharon u8 baid = mvm_sta->tid_to_baid[tid]; 172610b2b201SSara Sharon 1727e705c121SKalle Valo /* check that restart flow didn't zero the counter */ 1728e705c121SKalle Valo mvm->rx_ba_sessions--; 172910b2b201SSara Sharon if (!iwl_mvm_has_new_rx_api(mvm)) 173010b2b201SSara Sharon return 0; 1731e705c121SKalle Valo 173210b2b201SSara Sharon if (WARN_ON(baid == IWL_RX_REORDER_DATA_INVALID_BAID)) 173310b2b201SSara Sharon return -EINVAL; 173410b2b201SSara Sharon 173510b2b201SSara Sharon baid_data = rcu_access_pointer(mvm->baid_map[baid]); 173610b2b201SSara Sharon if (WARN_ON(!baid_data)) 173710b2b201SSara Sharon return -EINVAL; 173810b2b201SSara Sharon 173910b2b201SSara Sharon /* synchronize all rx queues so we can safely delete */ 1740b915c101SSara Sharon iwl_mvm_free_reorder(mvm, baid_data); 174110b2b201SSara Sharon del_timer_sync(&baid_data->session_timer); 174210b2b201SSara Sharon RCU_INIT_POINTER(mvm->baid_map[baid], NULL); 174310b2b201SSara Sharon kfree_rcu(baid_data, rcu_head); 174410b2b201SSara Sharon } 174510b2b201SSara Sharon return 0; 174610b2b201SSara Sharon 174710b2b201SSara Sharon out_free: 174810b2b201SSara Sharon kfree(baid_data); 1749e705c121SKalle Valo return ret; 1750e705c121SKalle Valo } 1751e705c121SKalle Valo 17529794c64fSLiad Kaufman int iwl_mvm_sta_tx_agg(struct iwl_mvm *mvm, struct ieee80211_sta *sta, 1753e705c121SKalle Valo int tid, u8 queue, bool start) 1754e705c121SKalle Valo { 1755e705c121SKalle Valo struct iwl_mvm_sta *mvm_sta = iwl_mvm_sta_from_mac80211(sta); 1756e705c121SKalle Valo struct iwl_mvm_add_sta_cmd cmd = {}; 1757e705c121SKalle Valo int ret; 1758e705c121SKalle Valo u32 status; 1759e705c121SKalle Valo 1760e705c121SKalle Valo lockdep_assert_held(&mvm->mutex); 1761e705c121SKalle Valo 1762e705c121SKalle Valo if (start) { 1763e705c121SKalle Valo mvm_sta->tfd_queue_msk |= BIT(queue); 1764e705c121SKalle Valo mvm_sta->tid_disable_agg &= ~BIT(tid); 1765e705c121SKalle Valo } else { 1766cf961e16SLiad Kaufman /* In DQA-mode the queue isn't removed on agg termination */ 1767cf961e16SLiad Kaufman if (!iwl_mvm_is_dqa_supported(mvm)) 1768e705c121SKalle Valo mvm_sta->tfd_queue_msk &= ~BIT(queue); 1769e705c121SKalle Valo mvm_sta->tid_disable_agg |= BIT(tid); 1770e705c121SKalle Valo } 1771e705c121SKalle Valo 1772e705c121SKalle Valo cmd.mac_id_n_color = cpu_to_le32(mvm_sta->mac_id_n_color); 1773e705c121SKalle Valo cmd.sta_id = mvm_sta->sta_id; 1774e705c121SKalle Valo cmd.add_modify = STA_MODE_MODIFY; 1775e705c121SKalle Valo cmd.modify_mask = STA_MODIFY_QUEUES | STA_MODIFY_TID_DISABLE_TX; 1776e705c121SKalle Valo cmd.tfd_queue_msk = cpu_to_le32(mvm_sta->tfd_queue_msk); 1777e705c121SKalle Valo cmd.tid_disable_tx = cpu_to_le16(mvm_sta->tid_disable_agg); 1778e705c121SKalle Valo 1779e705c121SKalle Valo status = ADD_STA_SUCCESS; 1780854c5705SSara Sharon ret = iwl_mvm_send_cmd_pdu_status(mvm, ADD_STA, 1781854c5705SSara Sharon iwl_mvm_add_sta_cmd_size(mvm), 1782e705c121SKalle Valo &cmd, &status); 1783e705c121SKalle Valo if (ret) 1784e705c121SKalle Valo return ret; 1785e705c121SKalle Valo 1786837c4da9SSara Sharon switch (status & IWL_ADD_STA_STATUS_MASK) { 1787e705c121SKalle Valo case ADD_STA_SUCCESS: 1788e705c121SKalle Valo break; 1789e705c121SKalle Valo default: 1790e705c121SKalle Valo ret = -EIO; 1791e705c121SKalle Valo IWL_ERR(mvm, "TX BA Session failed %sing, status 0x%x\n", 1792e705c121SKalle Valo start ? "start" : "stopp", status); 1793e705c121SKalle Valo break; 1794e705c121SKalle Valo } 1795e705c121SKalle Valo 1796e705c121SKalle Valo return ret; 1797e705c121SKalle Valo } 1798e705c121SKalle Valo 1799e705c121SKalle Valo const u8 tid_to_mac80211_ac[] = { 1800e705c121SKalle Valo IEEE80211_AC_BE, 1801e705c121SKalle Valo IEEE80211_AC_BK, 1802e705c121SKalle Valo IEEE80211_AC_BK, 1803e705c121SKalle Valo IEEE80211_AC_BE, 1804e705c121SKalle Valo IEEE80211_AC_VI, 1805e705c121SKalle Valo IEEE80211_AC_VI, 1806e705c121SKalle Valo IEEE80211_AC_VO, 1807e705c121SKalle Valo IEEE80211_AC_VO, 18089794c64fSLiad Kaufman IEEE80211_AC_VO, /* We treat MGMT as TID 8, which is set as AC_VO */ 1809e705c121SKalle Valo }; 1810e705c121SKalle Valo 1811e705c121SKalle Valo static const u8 tid_to_ucode_ac[] = { 1812e705c121SKalle Valo AC_BE, 1813e705c121SKalle Valo AC_BK, 1814e705c121SKalle Valo AC_BK, 1815e705c121SKalle Valo AC_BE, 1816e705c121SKalle Valo AC_VI, 1817e705c121SKalle Valo AC_VI, 1818e705c121SKalle Valo AC_VO, 1819e705c121SKalle Valo AC_VO, 1820e705c121SKalle Valo }; 1821e705c121SKalle Valo 1822e705c121SKalle Valo int iwl_mvm_sta_tx_agg_start(struct iwl_mvm *mvm, struct ieee80211_vif *vif, 1823e705c121SKalle Valo struct ieee80211_sta *sta, u16 tid, u16 *ssn) 1824e705c121SKalle Valo { 1825e705c121SKalle Valo struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta); 1826e705c121SKalle Valo struct iwl_mvm_tid_data *tid_data; 1827e705c121SKalle Valo int txq_id; 1828e705c121SKalle Valo int ret; 1829e705c121SKalle Valo 1830e705c121SKalle Valo if (WARN_ON_ONCE(tid >= IWL_MAX_TID_COUNT)) 1831e705c121SKalle Valo return -EINVAL; 1832e705c121SKalle Valo 1833e705c121SKalle Valo if (mvmsta->tid_data[tid].state != IWL_AGG_OFF) { 1834e705c121SKalle Valo IWL_ERR(mvm, "Start AGG when state is not IWL_AGG_OFF %d!\n", 1835e705c121SKalle Valo mvmsta->tid_data[tid].state); 1836e705c121SKalle Valo return -ENXIO; 1837e705c121SKalle Valo } 1838e705c121SKalle Valo 1839e705c121SKalle Valo lockdep_assert_held(&mvm->mutex); 1840e705c121SKalle Valo 1841e705c121SKalle Valo spin_lock_bh(&mvmsta->lock); 1842e705c121SKalle Valo 1843e705c121SKalle Valo /* possible race condition - we entered D0i3 while starting agg */ 1844e705c121SKalle Valo if (test_bit(IWL_MVM_STATUS_IN_D0I3, &mvm->status)) { 1845e705c121SKalle Valo spin_unlock_bh(&mvmsta->lock); 1846e705c121SKalle Valo IWL_ERR(mvm, "Entered D0i3 while starting Tx agg\n"); 1847e705c121SKalle Valo return -EIO; 1848e705c121SKalle Valo } 1849e705c121SKalle Valo 1850e705c121SKalle Valo spin_lock_bh(&mvm->queue_info_lock); 1851e705c121SKalle Valo 1852cf961e16SLiad Kaufman /* 1853cf961e16SLiad Kaufman * Note the possible cases: 1854cf961e16SLiad Kaufman * 1. In DQA mode with an enabled TXQ - TXQ needs to become agg'ed 1855cf961e16SLiad Kaufman * 2. Non-DQA mode: the TXQ hasn't yet been enabled, so find a free 1856cf961e16SLiad Kaufman * one and mark it as reserved 1857cf961e16SLiad Kaufman * 3. In DQA mode, but no traffic yet on this TID: same treatment as in 1858cf961e16SLiad Kaufman * non-DQA mode, since the TXQ hasn't yet been allocated 1859cf961e16SLiad Kaufman */ 1860cf961e16SLiad Kaufman txq_id = mvmsta->tid_data[tid].txq_id; 1861cf961e16SLiad Kaufman if (!iwl_mvm_is_dqa_supported(mvm) || 1862cf961e16SLiad Kaufman mvm->queue_info[txq_id].status != IWL_MVM_QUEUE_READY) { 18639794c64fSLiad Kaufman txq_id = iwl_mvm_find_free_queue(mvm, mvmsta->sta_id, 18649794c64fSLiad Kaufman mvm->first_agg_queue, 1865e705c121SKalle Valo mvm->last_agg_queue); 1866e705c121SKalle Valo if (txq_id < 0) { 1867e705c121SKalle Valo ret = txq_id; 1868e705c121SKalle Valo spin_unlock_bh(&mvm->queue_info_lock); 1869e705c121SKalle Valo IWL_ERR(mvm, "Failed to allocate agg queue\n"); 1870e705c121SKalle Valo goto release_locks; 1871e705c121SKalle Valo } 1872cf961e16SLiad Kaufman 1873cf961e16SLiad Kaufman /* TXQ hasn't yet been enabled, so mark it only as reserved */ 1874cf961e16SLiad Kaufman mvm->queue_info[txq_id].status = IWL_MVM_QUEUE_RESERVED; 1875cf961e16SLiad Kaufman } 1876e705c121SKalle Valo spin_unlock_bh(&mvm->queue_info_lock); 1877e705c121SKalle Valo 1878cf961e16SLiad Kaufman IWL_DEBUG_TX_QUEUES(mvm, 1879cf961e16SLiad Kaufman "AGG for tid %d will be on queue #%d\n", 1880cf961e16SLiad Kaufman tid, txq_id); 1881cf961e16SLiad Kaufman 1882e705c121SKalle Valo tid_data = &mvmsta->tid_data[tid]; 1883e705c121SKalle Valo tid_data->ssn = IEEE80211_SEQ_TO_SN(tid_data->seq_number); 1884e705c121SKalle Valo tid_data->txq_id = txq_id; 1885e705c121SKalle Valo *ssn = tid_data->ssn; 1886e705c121SKalle Valo 1887e705c121SKalle Valo IWL_DEBUG_TX_QUEUES(mvm, 1888e705c121SKalle Valo "Start AGG: sta %d tid %d queue %d - ssn = %d, next_recl = %d\n", 1889e705c121SKalle Valo mvmsta->sta_id, tid, txq_id, tid_data->ssn, 1890e705c121SKalle Valo tid_data->next_reclaimed); 1891e705c121SKalle Valo 1892e705c121SKalle Valo if (tid_data->ssn == tid_data->next_reclaimed) { 1893e705c121SKalle Valo tid_data->state = IWL_AGG_STARTING; 1894e705c121SKalle Valo ieee80211_start_tx_ba_cb_irqsafe(vif, sta->addr, tid); 1895e705c121SKalle Valo } else { 1896e705c121SKalle Valo tid_data->state = IWL_EMPTYING_HW_QUEUE_ADDBA; 1897e705c121SKalle Valo } 1898e705c121SKalle Valo 1899e705c121SKalle Valo ret = 0; 1900e705c121SKalle Valo 1901e705c121SKalle Valo release_locks: 1902e705c121SKalle Valo spin_unlock_bh(&mvmsta->lock); 1903e705c121SKalle Valo 1904e705c121SKalle Valo return ret; 1905e705c121SKalle Valo } 1906e705c121SKalle Valo 1907e705c121SKalle Valo int iwl_mvm_sta_tx_agg_oper(struct iwl_mvm *mvm, struct ieee80211_vif *vif, 1908bb81bb68SEmmanuel Grumbach struct ieee80211_sta *sta, u16 tid, u8 buf_size, 1909bb81bb68SEmmanuel Grumbach bool amsdu) 1910e705c121SKalle Valo { 1911e705c121SKalle Valo struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta); 1912e705c121SKalle Valo struct iwl_mvm_tid_data *tid_data = &mvmsta->tid_data[tid]; 1913e705c121SKalle Valo unsigned int wdg_timeout = 1914e705c121SKalle Valo iwl_mvm_get_wd_timeout(mvm, vif, sta->tdls, false); 1915eea76c36SEmmanuel Grumbach int queue, ret; 1916cf961e16SLiad Kaufman bool alloc_queue = true; 1917e705c121SKalle Valo u16 ssn; 1918e705c121SKalle Valo 1919eea76c36SEmmanuel Grumbach struct iwl_trans_txq_scd_cfg cfg = { 1920eea76c36SEmmanuel Grumbach .sta_id = mvmsta->sta_id, 1921eea76c36SEmmanuel Grumbach .tid = tid, 1922eea76c36SEmmanuel Grumbach .frame_limit = buf_size, 1923eea76c36SEmmanuel Grumbach .aggregate = true, 1924eea76c36SEmmanuel Grumbach }; 1925eea76c36SEmmanuel Grumbach 1926e705c121SKalle Valo BUILD_BUG_ON((sizeof(mvmsta->agg_tids) * BITS_PER_BYTE) 1927e705c121SKalle Valo != IWL_MAX_TID_COUNT); 1928e705c121SKalle Valo 1929e705c121SKalle Valo buf_size = min_t(int, buf_size, LINK_QUAL_AGG_FRAME_LIMIT_DEF); 1930e705c121SKalle Valo 1931e705c121SKalle Valo spin_lock_bh(&mvmsta->lock); 1932e705c121SKalle Valo ssn = tid_data->ssn; 1933e705c121SKalle Valo queue = tid_data->txq_id; 1934e705c121SKalle Valo tid_data->state = IWL_AGG_ON; 1935e705c121SKalle Valo mvmsta->agg_tids |= BIT(tid); 1936e705c121SKalle Valo tid_data->ssn = 0xffff; 1937bb81bb68SEmmanuel Grumbach tid_data->amsdu_in_ampdu_allowed = amsdu; 1938e705c121SKalle Valo spin_unlock_bh(&mvmsta->lock); 1939e705c121SKalle Valo 1940eea76c36SEmmanuel Grumbach cfg.fifo = iwl_mvm_ac_to_tx_fifo[tid_to_mac80211_ac[tid]]; 1941e705c121SKalle Valo 1942cf961e16SLiad Kaufman /* In DQA mode, the existing queue might need to be reconfigured */ 1943cf961e16SLiad Kaufman if (iwl_mvm_is_dqa_supported(mvm)) { 1944cf961e16SLiad Kaufman spin_lock_bh(&mvm->queue_info_lock); 1945cf961e16SLiad Kaufman /* Maybe there is no need to even alloc a queue... */ 1946cf961e16SLiad Kaufman if (mvm->queue_info[queue].status == IWL_MVM_QUEUE_READY) 1947cf961e16SLiad Kaufman alloc_queue = false; 1948cf961e16SLiad Kaufman spin_unlock_bh(&mvm->queue_info_lock); 1949cf961e16SLiad Kaufman 1950cf961e16SLiad Kaufman /* 1951cf961e16SLiad Kaufman * Only reconfig the SCD for the queue if the window size has 1952cf961e16SLiad Kaufman * changed from current (become smaller) 1953cf961e16SLiad Kaufman */ 1954cf961e16SLiad Kaufman if (!alloc_queue && buf_size < mvmsta->max_agg_bufsize) { 1955cf961e16SLiad Kaufman /* 1956cf961e16SLiad Kaufman * If reconfiguring an existing queue, it first must be 1957cf961e16SLiad Kaufman * drained 1958cf961e16SLiad Kaufman */ 1959cf961e16SLiad Kaufman ret = iwl_trans_wait_tx_queue_empty(mvm->trans, 1960cf961e16SLiad Kaufman BIT(queue)); 1961cf961e16SLiad Kaufman if (ret) { 1962cf961e16SLiad Kaufman IWL_ERR(mvm, 1963cf961e16SLiad Kaufman "Error draining queue before reconfig\n"); 1964cf961e16SLiad Kaufman return ret; 1965cf961e16SLiad Kaufman } 1966cf961e16SLiad Kaufman 1967cf961e16SLiad Kaufman ret = iwl_mvm_reconfig_scd(mvm, queue, cfg.fifo, 1968cf961e16SLiad Kaufman mvmsta->sta_id, tid, 1969cf961e16SLiad Kaufman buf_size, ssn); 1970cf961e16SLiad Kaufman if (ret) { 1971cf961e16SLiad Kaufman IWL_ERR(mvm, 1972cf961e16SLiad Kaufman "Error reconfiguring TXQ #%d\n", queue); 1973cf961e16SLiad Kaufman return ret; 1974cf961e16SLiad Kaufman } 1975cf961e16SLiad Kaufman } 1976cf961e16SLiad Kaufman } 1977cf961e16SLiad Kaufman 1978cf961e16SLiad Kaufman if (alloc_queue) 1979cf961e16SLiad Kaufman iwl_mvm_enable_txq(mvm, queue, 1980cf961e16SLiad Kaufman vif->hw_queue[tid_to_mac80211_ac[tid]], ssn, 1981cf961e16SLiad Kaufman &cfg, wdg_timeout); 1982e705c121SKalle Valo 1983e705c121SKalle Valo ret = iwl_mvm_sta_tx_agg(mvm, sta, tid, queue, true); 1984e705c121SKalle Valo if (ret) 1985e705c121SKalle Valo return -EIO; 1986e705c121SKalle Valo 1987e705c121SKalle Valo /* No need to mark as reserved */ 1988e705c121SKalle Valo spin_lock_bh(&mvm->queue_info_lock); 1989cf961e16SLiad Kaufman mvm->queue_info[queue].status = IWL_MVM_QUEUE_READY; 1990e705c121SKalle Valo spin_unlock_bh(&mvm->queue_info_lock); 1991e705c121SKalle Valo 1992e705c121SKalle Valo /* 1993e705c121SKalle Valo * Even though in theory the peer could have different 1994e705c121SKalle Valo * aggregation reorder buffer sizes for different sessions, 1995e705c121SKalle Valo * our ucode doesn't allow for that and has a global limit 1996e705c121SKalle Valo * for each station. Therefore, use the minimum of all the 1997e705c121SKalle Valo * aggregation sessions and our default value. 1998e705c121SKalle Valo */ 1999e705c121SKalle Valo mvmsta->max_agg_bufsize = 2000e705c121SKalle Valo min(mvmsta->max_agg_bufsize, buf_size); 2001e705c121SKalle Valo mvmsta->lq_sta.lq.agg_frame_cnt_limit = mvmsta->max_agg_bufsize; 2002e705c121SKalle Valo 2003e705c121SKalle Valo IWL_DEBUG_HT(mvm, "Tx aggregation enabled on ra = %pM tid = %d\n", 2004e705c121SKalle Valo sta->addr, tid); 2005e705c121SKalle Valo 2006e705c121SKalle Valo return iwl_mvm_send_lq_cmd(mvm, &mvmsta->lq_sta.lq, false); 2007e705c121SKalle Valo } 2008e705c121SKalle Valo 2009e705c121SKalle Valo int iwl_mvm_sta_tx_agg_stop(struct iwl_mvm *mvm, struct ieee80211_vif *vif, 2010e705c121SKalle Valo struct ieee80211_sta *sta, u16 tid) 2011e705c121SKalle Valo { 2012e705c121SKalle Valo struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta); 2013e705c121SKalle Valo struct iwl_mvm_tid_data *tid_data = &mvmsta->tid_data[tid]; 2014e705c121SKalle Valo u16 txq_id; 2015e705c121SKalle Valo int err; 2016e705c121SKalle Valo 2017e705c121SKalle Valo 2018e705c121SKalle Valo /* 2019e705c121SKalle Valo * If mac80211 is cleaning its state, then say that we finished since 2020e705c121SKalle Valo * our state has been cleared anyway. 2021e705c121SKalle Valo */ 2022e705c121SKalle Valo if (test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status)) { 2023e705c121SKalle Valo ieee80211_stop_tx_ba_cb_irqsafe(vif, sta->addr, tid); 2024e705c121SKalle Valo return 0; 2025e705c121SKalle Valo } 2026e705c121SKalle Valo 2027e705c121SKalle Valo spin_lock_bh(&mvmsta->lock); 2028e705c121SKalle Valo 2029e705c121SKalle Valo txq_id = tid_data->txq_id; 2030e705c121SKalle Valo 2031e705c121SKalle Valo IWL_DEBUG_TX_QUEUES(mvm, "Stop AGG: sta %d tid %d q %d state %d\n", 2032e705c121SKalle Valo mvmsta->sta_id, tid, txq_id, tid_data->state); 2033e705c121SKalle Valo 2034e705c121SKalle Valo mvmsta->agg_tids &= ~BIT(tid); 2035e705c121SKalle Valo 2036e705c121SKalle Valo spin_lock_bh(&mvm->queue_info_lock); 2037cf961e16SLiad Kaufman /* 2038cf961e16SLiad Kaufman * The TXQ is marked as reserved only if no traffic came through yet 2039cf961e16SLiad Kaufman * This means no traffic has been sent on this TID (agg'd or not), so 2040cf961e16SLiad Kaufman * we no longer have use for the queue. Since it hasn't even been 2041cf961e16SLiad Kaufman * allocated through iwl_mvm_enable_txq, so we can just mark it back as 2042cf961e16SLiad Kaufman * free. 2043cf961e16SLiad Kaufman */ 2044cf961e16SLiad Kaufman if (mvm->queue_info[txq_id].status == IWL_MVM_QUEUE_RESERVED) 2045cf961e16SLiad Kaufman mvm->queue_info[txq_id].status = IWL_MVM_QUEUE_FREE; 2046e705c121SKalle Valo spin_unlock_bh(&mvm->queue_info_lock); 2047e705c121SKalle Valo 2048e705c121SKalle Valo switch (tid_data->state) { 2049e705c121SKalle Valo case IWL_AGG_ON: 2050e705c121SKalle Valo tid_data->ssn = IEEE80211_SEQ_TO_SN(tid_data->seq_number); 2051e705c121SKalle Valo 2052e705c121SKalle Valo IWL_DEBUG_TX_QUEUES(mvm, 2053e705c121SKalle Valo "ssn = %d, next_recl = %d\n", 2054e705c121SKalle Valo tid_data->ssn, tid_data->next_reclaimed); 2055e705c121SKalle Valo 2056e705c121SKalle Valo /* There are still packets for this RA / TID in the HW */ 2057e705c121SKalle Valo if (tid_data->ssn != tid_data->next_reclaimed) { 2058e705c121SKalle Valo tid_data->state = IWL_EMPTYING_HW_QUEUE_DELBA; 2059e705c121SKalle Valo err = 0; 2060e705c121SKalle Valo break; 2061e705c121SKalle Valo } 2062e705c121SKalle Valo 2063e705c121SKalle Valo tid_data->ssn = 0xffff; 2064e705c121SKalle Valo tid_data->state = IWL_AGG_OFF; 2065e705c121SKalle Valo spin_unlock_bh(&mvmsta->lock); 2066e705c121SKalle Valo 2067e705c121SKalle Valo ieee80211_stop_tx_ba_cb_irqsafe(vif, sta->addr, tid); 2068e705c121SKalle Valo 2069e705c121SKalle Valo iwl_mvm_sta_tx_agg(mvm, sta, tid, txq_id, false); 2070e705c121SKalle Valo 2071cf961e16SLiad Kaufman if (!iwl_mvm_is_dqa_supported(mvm)) { 2072cf961e16SLiad Kaufman int mac_queue = vif->hw_queue[tid_to_mac80211_ac[tid]]; 2073cf961e16SLiad Kaufman 2074cf961e16SLiad Kaufman iwl_mvm_disable_txq(mvm, txq_id, mac_queue, tid, 0); 2075cf961e16SLiad Kaufman } 2076e705c121SKalle Valo return 0; 2077e705c121SKalle Valo case IWL_AGG_STARTING: 2078e705c121SKalle Valo case IWL_EMPTYING_HW_QUEUE_ADDBA: 2079e705c121SKalle Valo /* 2080e705c121SKalle Valo * The agg session has been stopped before it was set up. This 2081e705c121SKalle Valo * can happen when the AddBA timer times out for example. 2082e705c121SKalle Valo */ 2083e705c121SKalle Valo 2084e705c121SKalle Valo /* No barriers since we are under mutex */ 2085e705c121SKalle Valo lockdep_assert_held(&mvm->mutex); 2086e705c121SKalle Valo 2087e705c121SKalle Valo ieee80211_stop_tx_ba_cb_irqsafe(vif, sta->addr, tid); 2088e705c121SKalle Valo tid_data->state = IWL_AGG_OFF; 2089e705c121SKalle Valo err = 0; 2090e705c121SKalle Valo break; 2091e705c121SKalle Valo default: 2092e705c121SKalle Valo IWL_ERR(mvm, 2093e705c121SKalle Valo "Stopping AGG while state not ON or starting for %d on %d (%d)\n", 2094e705c121SKalle Valo mvmsta->sta_id, tid, tid_data->state); 2095e705c121SKalle Valo IWL_ERR(mvm, 2096e705c121SKalle Valo "\ttid_data->txq_id = %d\n", tid_data->txq_id); 2097e705c121SKalle Valo err = -EINVAL; 2098e705c121SKalle Valo } 2099e705c121SKalle Valo 2100e705c121SKalle Valo spin_unlock_bh(&mvmsta->lock); 2101e705c121SKalle Valo 2102e705c121SKalle Valo return err; 2103e705c121SKalle Valo } 2104e705c121SKalle Valo 2105e705c121SKalle Valo int iwl_mvm_sta_tx_agg_flush(struct iwl_mvm *mvm, struct ieee80211_vif *vif, 2106e705c121SKalle Valo struct ieee80211_sta *sta, u16 tid) 2107e705c121SKalle Valo { 2108e705c121SKalle Valo struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta); 2109e705c121SKalle Valo struct iwl_mvm_tid_data *tid_data = &mvmsta->tid_data[tid]; 2110e705c121SKalle Valo u16 txq_id; 2111e705c121SKalle Valo enum iwl_mvm_agg_state old_state; 2112e705c121SKalle Valo 2113e705c121SKalle Valo /* 2114e705c121SKalle Valo * First set the agg state to OFF to avoid calling 2115e705c121SKalle Valo * ieee80211_stop_tx_ba_cb in iwl_mvm_check_ratid_empty. 2116e705c121SKalle Valo */ 2117e705c121SKalle Valo spin_lock_bh(&mvmsta->lock); 2118e705c121SKalle Valo txq_id = tid_data->txq_id; 2119e705c121SKalle Valo IWL_DEBUG_TX_QUEUES(mvm, "Flush AGG: sta %d tid %d q %d state %d\n", 2120e705c121SKalle Valo mvmsta->sta_id, tid, txq_id, tid_data->state); 2121e705c121SKalle Valo old_state = tid_data->state; 2122e705c121SKalle Valo tid_data->state = IWL_AGG_OFF; 2123e705c121SKalle Valo mvmsta->agg_tids &= ~BIT(tid); 2124e705c121SKalle Valo spin_unlock_bh(&mvmsta->lock); 2125e705c121SKalle Valo 2126e705c121SKalle Valo spin_lock_bh(&mvm->queue_info_lock); 2127cf961e16SLiad Kaufman /* 2128cf961e16SLiad Kaufman * The TXQ is marked as reserved only if no traffic came through yet 2129cf961e16SLiad Kaufman * This means no traffic has been sent on this TID (agg'd or not), so 2130cf961e16SLiad Kaufman * we no longer have use for the queue. Since it hasn't even been 2131cf961e16SLiad Kaufman * allocated through iwl_mvm_enable_txq, so we can just mark it back as 2132cf961e16SLiad Kaufman * free. 2133cf961e16SLiad Kaufman */ 2134cf961e16SLiad Kaufman if (mvm->queue_info[txq_id].status == IWL_MVM_QUEUE_RESERVED) 2135cf961e16SLiad Kaufman mvm->queue_info[txq_id].status = IWL_MVM_QUEUE_FREE; 2136e705c121SKalle Valo spin_unlock_bh(&mvm->queue_info_lock); 2137e705c121SKalle Valo 2138e705c121SKalle Valo if (old_state >= IWL_AGG_ON) { 2139e705c121SKalle Valo iwl_mvm_drain_sta(mvm, mvmsta, true); 2140e705c121SKalle Valo if (iwl_mvm_flush_tx_path(mvm, BIT(txq_id), 0)) 2141e705c121SKalle Valo IWL_ERR(mvm, "Couldn't flush the AGG queue\n"); 2142e705c121SKalle Valo iwl_trans_wait_tx_queue_empty(mvm->trans, 2143e705c121SKalle Valo mvmsta->tfd_queue_msk); 2144e705c121SKalle Valo iwl_mvm_drain_sta(mvm, mvmsta, false); 2145e705c121SKalle Valo 2146e705c121SKalle Valo iwl_mvm_sta_tx_agg(mvm, sta, tid, txq_id, false); 2147e705c121SKalle Valo 2148cf961e16SLiad Kaufman if (!iwl_mvm_is_dqa_supported(mvm)) { 2149cf961e16SLiad Kaufman int mac_queue = vif->hw_queue[tid_to_mac80211_ac[tid]]; 2150cf961e16SLiad Kaufman 2151cf961e16SLiad Kaufman iwl_mvm_disable_txq(mvm, tid_data->txq_id, mac_queue, 2152cf961e16SLiad Kaufman tid, 0); 2153cf961e16SLiad Kaufman } 2154e705c121SKalle Valo } 2155e705c121SKalle Valo 2156e705c121SKalle Valo return 0; 2157e705c121SKalle Valo } 2158e705c121SKalle Valo 2159e705c121SKalle Valo static int iwl_mvm_set_fw_key_idx(struct iwl_mvm *mvm) 2160e705c121SKalle Valo { 2161e705c121SKalle Valo int i, max = -1, max_offs = -1; 2162e705c121SKalle Valo 2163e705c121SKalle Valo lockdep_assert_held(&mvm->mutex); 2164e705c121SKalle Valo 2165e705c121SKalle Valo /* Pick the unused key offset with the highest 'deleted' 2166e705c121SKalle Valo * counter. Every time a key is deleted, all the counters 2167e705c121SKalle Valo * are incremented and the one that was just deleted is 2168e705c121SKalle Valo * reset to zero. Thus, the highest counter is the one 2169e705c121SKalle Valo * that was deleted longest ago. Pick that one. 2170e705c121SKalle Valo */ 2171e705c121SKalle Valo for (i = 0; i < STA_KEY_MAX_NUM; i++) { 2172e705c121SKalle Valo if (test_bit(i, mvm->fw_key_table)) 2173e705c121SKalle Valo continue; 2174e705c121SKalle Valo if (mvm->fw_key_deleted[i] > max) { 2175e705c121SKalle Valo max = mvm->fw_key_deleted[i]; 2176e705c121SKalle Valo max_offs = i; 2177e705c121SKalle Valo } 2178e705c121SKalle Valo } 2179e705c121SKalle Valo 2180e705c121SKalle Valo if (max_offs < 0) 2181e705c121SKalle Valo return STA_KEY_IDX_INVALID; 2182e705c121SKalle Valo 2183e705c121SKalle Valo return max_offs; 2184e705c121SKalle Valo } 2185e705c121SKalle Valo 21865f7a1847SJohannes Berg static struct iwl_mvm_sta *iwl_mvm_get_key_sta(struct iwl_mvm *mvm, 21874615fd15SEmmanuel Grumbach struct ieee80211_vif *vif, 2188e705c121SKalle Valo struct ieee80211_sta *sta) 2189e705c121SKalle Valo { 2190e705c121SKalle Valo struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 2191e705c121SKalle Valo 21925f7a1847SJohannes Berg if (sta) 21935f7a1847SJohannes Berg return iwl_mvm_sta_from_mac80211(sta); 2194e705c121SKalle Valo 2195e705c121SKalle Valo /* 2196e705c121SKalle Valo * The device expects GTKs for station interfaces to be 2197e705c121SKalle Valo * installed as GTKs for the AP station. If we have no 2198e705c121SKalle Valo * station ID, then use AP's station ID. 2199e705c121SKalle Valo */ 2200e705c121SKalle Valo if (vif->type == NL80211_IFTYPE_STATION && 22014615fd15SEmmanuel Grumbach mvmvif->ap_sta_id != IWL_MVM_STATION_COUNT) { 22024615fd15SEmmanuel Grumbach u8 sta_id = mvmvif->ap_sta_id; 22034615fd15SEmmanuel Grumbach 22044615fd15SEmmanuel Grumbach /* 22054615fd15SEmmanuel Grumbach * It is possible that the 'sta' parameter is NULL, 22064615fd15SEmmanuel Grumbach * for example when a GTK is removed - the sta_id will then 22074615fd15SEmmanuel Grumbach * be the AP ID, and no station was passed by mac80211. 22084615fd15SEmmanuel Grumbach */ 220913303c0fSSara Sharon return iwl_mvm_sta_from_staid_protected(mvm, sta_id); 22104615fd15SEmmanuel Grumbach } 2211e705c121SKalle Valo 22125f7a1847SJohannes Berg return NULL; 2213e705c121SKalle Valo } 2214e705c121SKalle Valo 2215e705c121SKalle Valo static int iwl_mvm_send_sta_key(struct iwl_mvm *mvm, 2216e705c121SKalle Valo struct iwl_mvm_sta *mvm_sta, 2217e705c121SKalle Valo struct ieee80211_key_conf *keyconf, bool mcast, 22184615fd15SEmmanuel Grumbach u32 tkip_iv32, u16 *tkip_p1k, u32 cmd_flags, 22194615fd15SEmmanuel Grumbach u8 key_offset) 2220e705c121SKalle Valo { 2221e705c121SKalle Valo struct iwl_mvm_add_sta_key_cmd cmd = {}; 2222e705c121SKalle Valo __le16 key_flags; 2223e705c121SKalle Valo int ret; 2224e705c121SKalle Valo u32 status; 2225e705c121SKalle Valo u16 keyidx; 2226e705c121SKalle Valo int i; 2227e705c121SKalle Valo u8 sta_id = mvm_sta->sta_id; 2228e705c121SKalle Valo 2229e705c121SKalle Valo keyidx = (keyconf->keyidx << STA_KEY_FLG_KEYID_POS) & 2230e705c121SKalle Valo STA_KEY_FLG_KEYID_MSK; 2231e705c121SKalle Valo key_flags = cpu_to_le16(keyidx); 2232e705c121SKalle Valo key_flags |= cpu_to_le16(STA_KEY_FLG_WEP_KEY_MAP); 2233e705c121SKalle Valo 2234e705c121SKalle Valo switch (keyconf->cipher) { 2235e705c121SKalle Valo case WLAN_CIPHER_SUITE_TKIP: 2236e705c121SKalle Valo key_flags |= cpu_to_le16(STA_KEY_FLG_TKIP); 2237e705c121SKalle Valo cmd.tkip_rx_tsc_byte2 = tkip_iv32; 2238e705c121SKalle Valo for (i = 0; i < 5; i++) 2239e705c121SKalle Valo cmd.tkip_rx_ttak[i] = cpu_to_le16(tkip_p1k[i]); 2240e705c121SKalle Valo memcpy(cmd.key, keyconf->key, keyconf->keylen); 2241e705c121SKalle Valo break; 2242e705c121SKalle Valo case WLAN_CIPHER_SUITE_CCMP: 2243e705c121SKalle Valo key_flags |= cpu_to_le16(STA_KEY_FLG_CCM); 2244e705c121SKalle Valo memcpy(cmd.key, keyconf->key, keyconf->keylen); 2245e705c121SKalle Valo break; 2246e705c121SKalle Valo case WLAN_CIPHER_SUITE_WEP104: 2247e705c121SKalle Valo key_flags |= cpu_to_le16(STA_KEY_FLG_WEP_13BYTES); 2248e705c121SKalle Valo /* fall through */ 2249e705c121SKalle Valo case WLAN_CIPHER_SUITE_WEP40: 2250e705c121SKalle Valo key_flags |= cpu_to_le16(STA_KEY_FLG_WEP); 2251e705c121SKalle Valo memcpy(cmd.key + 3, keyconf->key, keyconf->keylen); 2252e705c121SKalle Valo break; 22532a53d166SAyala Beker case WLAN_CIPHER_SUITE_GCMP_256: 22542a53d166SAyala Beker key_flags |= cpu_to_le16(STA_KEY_FLG_KEY_32BYTES); 22552a53d166SAyala Beker /* fall through */ 22562a53d166SAyala Beker case WLAN_CIPHER_SUITE_GCMP: 22572a53d166SAyala Beker key_flags |= cpu_to_le16(STA_KEY_FLG_GCMP); 22582a53d166SAyala Beker memcpy(cmd.key, keyconf->key, keyconf->keylen); 22592a53d166SAyala Beker break; 2260e705c121SKalle Valo default: 2261e705c121SKalle Valo key_flags |= cpu_to_le16(STA_KEY_FLG_EXT); 2262e705c121SKalle Valo memcpy(cmd.key, keyconf->key, keyconf->keylen); 2263e705c121SKalle Valo } 2264e705c121SKalle Valo 2265e705c121SKalle Valo if (mcast) 2266e705c121SKalle Valo key_flags |= cpu_to_le16(STA_KEY_MULTICAST); 2267e705c121SKalle Valo 22684615fd15SEmmanuel Grumbach cmd.key_offset = key_offset; 2269e705c121SKalle Valo cmd.key_flags = key_flags; 2270e705c121SKalle Valo cmd.sta_id = sta_id; 2271e705c121SKalle Valo 2272e705c121SKalle Valo status = ADD_STA_SUCCESS; 2273e705c121SKalle Valo if (cmd_flags & CMD_ASYNC) 2274e705c121SKalle Valo ret = iwl_mvm_send_cmd_pdu(mvm, ADD_STA_KEY, CMD_ASYNC, 2275e705c121SKalle Valo sizeof(cmd), &cmd); 2276e705c121SKalle Valo else 2277e705c121SKalle Valo ret = iwl_mvm_send_cmd_pdu_status(mvm, ADD_STA_KEY, sizeof(cmd), 2278e705c121SKalle Valo &cmd, &status); 2279e705c121SKalle Valo 2280e705c121SKalle Valo switch (status) { 2281e705c121SKalle Valo case ADD_STA_SUCCESS: 2282e705c121SKalle Valo IWL_DEBUG_WEP(mvm, "MODIFY_STA: set dynamic key passed\n"); 2283e705c121SKalle Valo break; 2284e705c121SKalle Valo default: 2285e705c121SKalle Valo ret = -EIO; 2286e705c121SKalle Valo IWL_ERR(mvm, "MODIFY_STA: set dynamic key failed\n"); 2287e705c121SKalle Valo break; 2288e705c121SKalle Valo } 2289e705c121SKalle Valo 2290e705c121SKalle Valo return ret; 2291e705c121SKalle Valo } 2292e705c121SKalle Valo 2293e705c121SKalle Valo static int iwl_mvm_send_sta_igtk(struct iwl_mvm *mvm, 2294e705c121SKalle Valo struct ieee80211_key_conf *keyconf, 2295e705c121SKalle Valo u8 sta_id, bool remove_key) 2296e705c121SKalle Valo { 2297e705c121SKalle Valo struct iwl_mvm_mgmt_mcast_key_cmd igtk_cmd = {}; 2298e705c121SKalle Valo 2299e705c121SKalle Valo /* verify the key details match the required command's expectations */ 2300e705c121SKalle Valo if (WARN_ON((keyconf->cipher != WLAN_CIPHER_SUITE_AES_CMAC) || 2301e705c121SKalle Valo (keyconf->flags & IEEE80211_KEY_FLAG_PAIRWISE) || 2302e705c121SKalle Valo (keyconf->keyidx != 4 && keyconf->keyidx != 5))) 2303e705c121SKalle Valo return -EINVAL; 2304e705c121SKalle Valo 2305e705c121SKalle Valo igtk_cmd.key_id = cpu_to_le32(keyconf->keyidx); 2306e705c121SKalle Valo igtk_cmd.sta_id = cpu_to_le32(sta_id); 2307e705c121SKalle Valo 2308e705c121SKalle Valo if (remove_key) { 2309e705c121SKalle Valo igtk_cmd.ctrl_flags |= cpu_to_le32(STA_KEY_NOT_VALID); 2310e705c121SKalle Valo } else { 2311e705c121SKalle Valo struct ieee80211_key_seq seq; 2312e705c121SKalle Valo const u8 *pn; 2313e705c121SKalle Valo 2314e705c121SKalle Valo memcpy(igtk_cmd.IGTK, keyconf->key, keyconf->keylen); 2315e705c121SKalle Valo ieee80211_get_key_rx_seq(keyconf, 0, &seq); 2316e705c121SKalle Valo pn = seq.aes_cmac.pn; 2317e705c121SKalle Valo igtk_cmd.receive_seq_cnt = cpu_to_le64(((u64) pn[5] << 0) | 2318e705c121SKalle Valo ((u64) pn[4] << 8) | 2319e705c121SKalle Valo ((u64) pn[3] << 16) | 2320e705c121SKalle Valo ((u64) pn[2] << 24) | 2321e705c121SKalle Valo ((u64) pn[1] << 32) | 2322e705c121SKalle Valo ((u64) pn[0] << 40)); 2323e705c121SKalle Valo } 2324e705c121SKalle Valo 2325e705c121SKalle Valo IWL_DEBUG_INFO(mvm, "%s igtk for sta %u\n", 2326e705c121SKalle Valo remove_key ? "removing" : "installing", 2327e705c121SKalle Valo igtk_cmd.sta_id); 2328e705c121SKalle Valo 2329e705c121SKalle Valo return iwl_mvm_send_cmd_pdu(mvm, MGMT_MCAST_KEY, 0, 2330e705c121SKalle Valo sizeof(igtk_cmd), &igtk_cmd); 2331e705c121SKalle Valo } 2332e705c121SKalle Valo 2333e705c121SKalle Valo 2334e705c121SKalle Valo static inline u8 *iwl_mvm_get_mac_addr(struct iwl_mvm *mvm, 2335e705c121SKalle Valo struct ieee80211_vif *vif, 2336e705c121SKalle Valo struct ieee80211_sta *sta) 2337e705c121SKalle Valo { 2338e705c121SKalle Valo struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 2339e705c121SKalle Valo 2340e705c121SKalle Valo if (sta) 2341e705c121SKalle Valo return sta->addr; 2342e705c121SKalle Valo 2343e705c121SKalle Valo if (vif->type == NL80211_IFTYPE_STATION && 2344e705c121SKalle Valo mvmvif->ap_sta_id != IWL_MVM_STATION_COUNT) { 2345e705c121SKalle Valo u8 sta_id = mvmvif->ap_sta_id; 2346e705c121SKalle Valo sta = rcu_dereference_protected(mvm->fw_id_to_mac_id[sta_id], 2347e705c121SKalle Valo lockdep_is_held(&mvm->mutex)); 2348e705c121SKalle Valo return sta->addr; 2349e705c121SKalle Valo } 2350e705c121SKalle Valo 2351e705c121SKalle Valo 2352e705c121SKalle Valo return NULL; 2353e705c121SKalle Valo } 2354e705c121SKalle Valo 2355e705c121SKalle Valo static int __iwl_mvm_set_sta_key(struct iwl_mvm *mvm, 2356e705c121SKalle Valo struct ieee80211_vif *vif, 2357e705c121SKalle Valo struct ieee80211_sta *sta, 2358e705c121SKalle Valo struct ieee80211_key_conf *keyconf, 23594615fd15SEmmanuel Grumbach u8 key_offset, 2360e705c121SKalle Valo bool mcast) 2361e705c121SKalle Valo { 2362e705c121SKalle Valo struct iwl_mvm_sta *mvm_sta = iwl_mvm_sta_from_mac80211(sta); 2363e705c121SKalle Valo int ret; 2364e705c121SKalle Valo const u8 *addr; 2365e705c121SKalle Valo struct ieee80211_key_seq seq; 2366e705c121SKalle Valo u16 p1k[5]; 2367e705c121SKalle Valo 2368e705c121SKalle Valo switch (keyconf->cipher) { 2369e705c121SKalle Valo case WLAN_CIPHER_SUITE_TKIP: 2370e705c121SKalle Valo addr = iwl_mvm_get_mac_addr(mvm, vif, sta); 2371e705c121SKalle Valo /* get phase 1 key from mac80211 */ 2372e705c121SKalle Valo ieee80211_get_key_rx_seq(keyconf, 0, &seq); 2373e705c121SKalle Valo ieee80211_get_tkip_rx_p1k(keyconf, addr, seq.tkip.iv32, p1k); 2374e705c121SKalle Valo ret = iwl_mvm_send_sta_key(mvm, mvm_sta, keyconf, mcast, 23754615fd15SEmmanuel Grumbach seq.tkip.iv32, p1k, 0, key_offset); 2376e705c121SKalle Valo break; 2377e705c121SKalle Valo case WLAN_CIPHER_SUITE_CCMP: 2378e705c121SKalle Valo case WLAN_CIPHER_SUITE_WEP40: 2379e705c121SKalle Valo case WLAN_CIPHER_SUITE_WEP104: 23802a53d166SAyala Beker case WLAN_CIPHER_SUITE_GCMP: 23812a53d166SAyala Beker case WLAN_CIPHER_SUITE_GCMP_256: 2382e705c121SKalle Valo ret = iwl_mvm_send_sta_key(mvm, mvm_sta, keyconf, mcast, 23834615fd15SEmmanuel Grumbach 0, NULL, 0, key_offset); 2384e705c121SKalle Valo break; 2385e705c121SKalle Valo default: 2386e705c121SKalle Valo ret = iwl_mvm_send_sta_key(mvm, mvm_sta, keyconf, mcast, 23874615fd15SEmmanuel Grumbach 0, NULL, 0, key_offset); 2388e705c121SKalle Valo } 2389e705c121SKalle Valo 2390e705c121SKalle Valo return ret; 2391e705c121SKalle Valo } 2392e705c121SKalle Valo 2393e705c121SKalle Valo static int __iwl_mvm_remove_sta_key(struct iwl_mvm *mvm, u8 sta_id, 2394e705c121SKalle Valo struct ieee80211_key_conf *keyconf, 2395e705c121SKalle Valo bool mcast) 2396e705c121SKalle Valo { 2397e705c121SKalle Valo struct iwl_mvm_add_sta_key_cmd cmd = {}; 2398e705c121SKalle Valo __le16 key_flags; 2399e705c121SKalle Valo int ret; 2400e705c121SKalle Valo u32 status; 2401e705c121SKalle Valo 2402e705c121SKalle Valo key_flags = cpu_to_le16((keyconf->keyidx << STA_KEY_FLG_KEYID_POS) & 2403e705c121SKalle Valo STA_KEY_FLG_KEYID_MSK); 2404e705c121SKalle Valo key_flags |= cpu_to_le16(STA_KEY_FLG_NO_ENC | STA_KEY_FLG_WEP_KEY_MAP); 2405e705c121SKalle Valo key_flags |= cpu_to_le16(STA_KEY_NOT_VALID); 2406e705c121SKalle Valo 2407e705c121SKalle Valo if (mcast) 2408e705c121SKalle Valo key_flags |= cpu_to_le16(STA_KEY_MULTICAST); 2409e705c121SKalle Valo 2410e705c121SKalle Valo cmd.key_flags = key_flags; 2411e705c121SKalle Valo cmd.key_offset = keyconf->hw_key_idx; 2412e705c121SKalle Valo cmd.sta_id = sta_id; 2413e705c121SKalle Valo 2414e705c121SKalle Valo status = ADD_STA_SUCCESS; 2415e705c121SKalle Valo ret = iwl_mvm_send_cmd_pdu_status(mvm, ADD_STA_KEY, sizeof(cmd), 2416e705c121SKalle Valo &cmd, &status); 2417e705c121SKalle Valo 2418e705c121SKalle Valo switch (status) { 2419e705c121SKalle Valo case ADD_STA_SUCCESS: 2420e705c121SKalle Valo IWL_DEBUG_WEP(mvm, "MODIFY_STA: remove sta key passed\n"); 2421e705c121SKalle Valo break; 2422e705c121SKalle Valo default: 2423e705c121SKalle Valo ret = -EIO; 2424e705c121SKalle Valo IWL_ERR(mvm, "MODIFY_STA: remove sta key failed\n"); 2425e705c121SKalle Valo break; 2426e705c121SKalle Valo } 2427e705c121SKalle Valo 2428e705c121SKalle Valo return ret; 2429e705c121SKalle Valo } 2430e705c121SKalle Valo 2431e705c121SKalle Valo int iwl_mvm_set_sta_key(struct iwl_mvm *mvm, 2432e705c121SKalle Valo struct ieee80211_vif *vif, 2433e705c121SKalle Valo struct ieee80211_sta *sta, 2434e705c121SKalle Valo struct ieee80211_key_conf *keyconf, 24354615fd15SEmmanuel Grumbach u8 key_offset) 2436e705c121SKalle Valo { 2437e705c121SKalle Valo bool mcast = !(keyconf->flags & IEEE80211_KEY_FLAG_PAIRWISE); 24385f7a1847SJohannes Berg struct iwl_mvm_sta *mvm_sta; 2439e705c121SKalle Valo u8 sta_id; 2440e705c121SKalle Valo int ret; 2441e705c121SKalle Valo static const u8 __maybe_unused zero_addr[ETH_ALEN] = {0}; 2442e705c121SKalle Valo 2443e705c121SKalle Valo lockdep_assert_held(&mvm->mutex); 2444e705c121SKalle Valo 2445e705c121SKalle Valo /* Get the station id from the mvm local station table */ 24465f7a1847SJohannes Berg mvm_sta = iwl_mvm_get_key_sta(mvm, vif, sta); 24475f7a1847SJohannes Berg if (!mvm_sta) { 24485f7a1847SJohannes Berg IWL_ERR(mvm, "Failed to find station\n"); 2449e705c121SKalle Valo return -EINVAL; 2450e705c121SKalle Valo } 24515f7a1847SJohannes Berg sta_id = mvm_sta->sta_id; 2452e705c121SKalle Valo 2453e705c121SKalle Valo if (keyconf->cipher == WLAN_CIPHER_SUITE_AES_CMAC) { 2454e705c121SKalle Valo ret = iwl_mvm_send_sta_igtk(mvm, keyconf, sta_id, false); 2455e705c121SKalle Valo goto end; 2456e705c121SKalle Valo } 2457e705c121SKalle Valo 2458e705c121SKalle Valo /* 2459e705c121SKalle Valo * It is possible that the 'sta' parameter is NULL, and thus 2460e705c121SKalle Valo * there is a need to retrieve the sta from the local station table. 2461e705c121SKalle Valo */ 2462e705c121SKalle Valo if (!sta) { 2463e705c121SKalle Valo sta = rcu_dereference_protected(mvm->fw_id_to_mac_id[sta_id], 2464e705c121SKalle Valo lockdep_is_held(&mvm->mutex)); 2465e705c121SKalle Valo if (IS_ERR_OR_NULL(sta)) { 2466e705c121SKalle Valo IWL_ERR(mvm, "Invalid station id\n"); 2467e705c121SKalle Valo return -EINVAL; 2468e705c121SKalle Valo } 2469e705c121SKalle Valo } 2470e705c121SKalle Valo 2471e705c121SKalle Valo if (WARN_ON_ONCE(iwl_mvm_sta_from_mac80211(sta)->vif != vif)) 2472e705c121SKalle Valo return -EINVAL; 2473e705c121SKalle Valo 24744615fd15SEmmanuel Grumbach /* If the key_offset is not pre-assigned, we need to find a 24754615fd15SEmmanuel Grumbach * new offset to use. In normal cases, the offset is not 24764615fd15SEmmanuel Grumbach * pre-assigned, but during HW_RESTART we want to reuse the 24774615fd15SEmmanuel Grumbach * same indices, so we pass them when this function is called. 24784615fd15SEmmanuel Grumbach * 24794615fd15SEmmanuel Grumbach * In D3 entry, we need to hardcoded the indices (because the 24804615fd15SEmmanuel Grumbach * firmware hardcodes the PTK offset to 0). In this case, we 24814615fd15SEmmanuel Grumbach * need to make sure we don't overwrite the hw_key_idx in the 24824615fd15SEmmanuel Grumbach * keyconf structure, because otherwise we cannot configure 24834615fd15SEmmanuel Grumbach * the original ones back when resuming. 2484e705c121SKalle Valo */ 24854615fd15SEmmanuel Grumbach if (key_offset == STA_KEY_IDX_INVALID) { 24864615fd15SEmmanuel Grumbach key_offset = iwl_mvm_set_fw_key_idx(mvm); 24874615fd15SEmmanuel Grumbach if (key_offset == STA_KEY_IDX_INVALID) 2488e705c121SKalle Valo return -ENOSPC; 24894615fd15SEmmanuel Grumbach keyconf->hw_key_idx = key_offset; 2490e705c121SKalle Valo } 2491e705c121SKalle Valo 24924615fd15SEmmanuel Grumbach ret = __iwl_mvm_set_sta_key(mvm, vif, sta, keyconf, key_offset, mcast); 24939c3deeb5SLuca Coelho if (ret) 2494e705c121SKalle Valo goto end; 2495e705c121SKalle Valo 2496e705c121SKalle Valo /* 2497e705c121SKalle Valo * For WEP, the same key is used for multicast and unicast. Upload it 2498e705c121SKalle Valo * again, using the same key offset, and now pointing the other one 2499e705c121SKalle Valo * to the same key slot (offset). 2500e705c121SKalle Valo * If this fails, remove the original as well. 2501e705c121SKalle Valo */ 2502e705c121SKalle Valo if (keyconf->cipher == WLAN_CIPHER_SUITE_WEP40 || 2503e705c121SKalle Valo keyconf->cipher == WLAN_CIPHER_SUITE_WEP104) { 25044615fd15SEmmanuel Grumbach ret = __iwl_mvm_set_sta_key(mvm, vif, sta, keyconf, 25054615fd15SEmmanuel Grumbach key_offset, !mcast); 2506e705c121SKalle Valo if (ret) { 2507e705c121SKalle Valo __iwl_mvm_remove_sta_key(mvm, sta_id, keyconf, mcast); 25089c3deeb5SLuca Coelho goto end; 2509e705c121SKalle Valo } 2510e705c121SKalle Valo } 2511e705c121SKalle Valo 25129c3deeb5SLuca Coelho __set_bit(key_offset, mvm->fw_key_table); 25139c3deeb5SLuca Coelho 2514e705c121SKalle Valo end: 2515e705c121SKalle Valo IWL_DEBUG_WEP(mvm, "key: cipher=%x len=%d idx=%d sta=%pM ret=%d\n", 2516e705c121SKalle Valo keyconf->cipher, keyconf->keylen, keyconf->keyidx, 2517e705c121SKalle Valo sta ? sta->addr : zero_addr, ret); 2518e705c121SKalle Valo return ret; 2519e705c121SKalle Valo } 2520e705c121SKalle Valo 2521e705c121SKalle Valo int iwl_mvm_remove_sta_key(struct iwl_mvm *mvm, 2522e705c121SKalle Valo struct ieee80211_vif *vif, 2523e705c121SKalle Valo struct ieee80211_sta *sta, 2524e705c121SKalle Valo struct ieee80211_key_conf *keyconf) 2525e705c121SKalle Valo { 2526e705c121SKalle Valo bool mcast = !(keyconf->flags & IEEE80211_KEY_FLAG_PAIRWISE); 25275f7a1847SJohannes Berg struct iwl_mvm_sta *mvm_sta; 25285f7a1847SJohannes Berg u8 sta_id = IWL_MVM_STATION_COUNT; 2529e705c121SKalle Valo int ret, i; 2530e705c121SKalle Valo 2531e705c121SKalle Valo lockdep_assert_held(&mvm->mutex); 2532e705c121SKalle Valo 25335f7a1847SJohannes Berg /* Get the station from the mvm local station table */ 25345f7a1847SJohannes Berg mvm_sta = iwl_mvm_get_key_sta(mvm, vif, sta); 2535e705c121SKalle Valo 2536e705c121SKalle Valo IWL_DEBUG_WEP(mvm, "mvm remove dynamic key: idx=%d sta=%d\n", 2537e705c121SKalle Valo keyconf->keyidx, sta_id); 2538e705c121SKalle Valo 2539e705c121SKalle Valo if (keyconf->cipher == WLAN_CIPHER_SUITE_AES_CMAC) 2540e705c121SKalle Valo return iwl_mvm_send_sta_igtk(mvm, keyconf, sta_id, true); 2541e705c121SKalle Valo 2542e705c121SKalle Valo if (!__test_and_clear_bit(keyconf->hw_key_idx, mvm->fw_key_table)) { 2543e705c121SKalle Valo IWL_ERR(mvm, "offset %d not used in fw key table.\n", 2544e705c121SKalle Valo keyconf->hw_key_idx); 2545e705c121SKalle Valo return -ENOENT; 2546e705c121SKalle Valo } 2547e705c121SKalle Valo 2548e705c121SKalle Valo /* track which key was deleted last */ 2549e705c121SKalle Valo for (i = 0; i < STA_KEY_MAX_NUM; i++) { 2550e705c121SKalle Valo if (mvm->fw_key_deleted[i] < U8_MAX) 2551e705c121SKalle Valo mvm->fw_key_deleted[i]++; 2552e705c121SKalle Valo } 2553e705c121SKalle Valo mvm->fw_key_deleted[keyconf->hw_key_idx] = 0; 2554e705c121SKalle Valo 25555f7a1847SJohannes Berg if (!mvm_sta) { 2556e705c121SKalle Valo IWL_DEBUG_WEP(mvm, "station non-existent, early return.\n"); 2557e705c121SKalle Valo return 0; 2558e705c121SKalle Valo } 2559e705c121SKalle Valo 25605f7a1847SJohannes Berg sta_id = mvm_sta->sta_id; 25615f7a1847SJohannes Berg 2562e705c121SKalle Valo ret = __iwl_mvm_remove_sta_key(mvm, sta_id, keyconf, mcast); 2563e705c121SKalle Valo if (ret) 2564e705c121SKalle Valo return ret; 2565e705c121SKalle Valo 2566e705c121SKalle Valo /* delete WEP key twice to get rid of (now useless) offset */ 2567e705c121SKalle Valo if (keyconf->cipher == WLAN_CIPHER_SUITE_WEP40 || 2568e705c121SKalle Valo keyconf->cipher == WLAN_CIPHER_SUITE_WEP104) 2569e705c121SKalle Valo ret = __iwl_mvm_remove_sta_key(mvm, sta_id, keyconf, !mcast); 2570e705c121SKalle Valo 2571e705c121SKalle Valo return ret; 2572e705c121SKalle Valo } 2573e705c121SKalle Valo 2574e705c121SKalle Valo void iwl_mvm_update_tkip_key(struct iwl_mvm *mvm, 2575e705c121SKalle Valo struct ieee80211_vif *vif, 2576e705c121SKalle Valo struct ieee80211_key_conf *keyconf, 2577e705c121SKalle Valo struct ieee80211_sta *sta, u32 iv32, 2578e705c121SKalle Valo u16 *phase1key) 2579e705c121SKalle Valo { 2580e705c121SKalle Valo struct iwl_mvm_sta *mvm_sta; 2581e705c121SKalle Valo bool mcast = !(keyconf->flags & IEEE80211_KEY_FLAG_PAIRWISE); 2582e705c121SKalle Valo 2583e705c121SKalle Valo rcu_read_lock(); 2584e705c121SKalle Valo 25855f7a1847SJohannes Berg mvm_sta = iwl_mvm_get_key_sta(mvm, vif, sta); 25865f7a1847SJohannes Berg if (WARN_ON_ONCE(!mvm_sta)) 258712f17211SEmmanuel Grumbach goto unlock; 2588e705c121SKalle Valo iwl_mvm_send_sta_key(mvm, mvm_sta, keyconf, mcast, 25894615fd15SEmmanuel Grumbach iv32, phase1key, CMD_ASYNC, keyconf->hw_key_idx); 259012f17211SEmmanuel Grumbach 259112f17211SEmmanuel Grumbach unlock: 2592e705c121SKalle Valo rcu_read_unlock(); 2593e705c121SKalle Valo } 2594e705c121SKalle Valo 2595e705c121SKalle Valo void iwl_mvm_sta_modify_ps_wake(struct iwl_mvm *mvm, 2596e705c121SKalle Valo struct ieee80211_sta *sta) 2597e705c121SKalle Valo { 2598e705c121SKalle Valo struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta); 2599e705c121SKalle Valo struct iwl_mvm_add_sta_cmd cmd = { 2600e705c121SKalle Valo .add_modify = STA_MODE_MODIFY, 2601e705c121SKalle Valo .sta_id = mvmsta->sta_id, 2602e705c121SKalle Valo .station_flags_msk = cpu_to_le32(STA_FLG_PS), 2603e705c121SKalle Valo .mac_id_n_color = cpu_to_le32(mvmsta->mac_id_n_color), 2604e705c121SKalle Valo }; 2605e705c121SKalle Valo int ret; 2606e705c121SKalle Valo 2607854c5705SSara Sharon ret = iwl_mvm_send_cmd_pdu(mvm, ADD_STA, CMD_ASYNC, 2608854c5705SSara Sharon iwl_mvm_add_sta_cmd_size(mvm), &cmd); 2609e705c121SKalle Valo if (ret) 2610e705c121SKalle Valo IWL_ERR(mvm, "Failed to send ADD_STA command (%d)\n", ret); 2611e705c121SKalle Valo } 2612e705c121SKalle Valo 2613e705c121SKalle Valo void iwl_mvm_sta_modify_sleep_tx_count(struct iwl_mvm *mvm, 2614e705c121SKalle Valo struct ieee80211_sta *sta, 2615e705c121SKalle Valo enum ieee80211_frame_release_type reason, 2616e705c121SKalle Valo u16 cnt, u16 tids, bool more_data, 2617e705c121SKalle Valo bool agg) 2618e705c121SKalle Valo { 2619e705c121SKalle Valo struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta); 2620e705c121SKalle Valo struct iwl_mvm_add_sta_cmd cmd = { 2621e705c121SKalle Valo .add_modify = STA_MODE_MODIFY, 2622e705c121SKalle Valo .sta_id = mvmsta->sta_id, 2623e705c121SKalle Valo .modify_mask = STA_MODIFY_SLEEPING_STA_TX_COUNT, 2624e705c121SKalle Valo .sleep_tx_count = cpu_to_le16(cnt), 2625e705c121SKalle Valo .mac_id_n_color = cpu_to_le32(mvmsta->mac_id_n_color), 2626e705c121SKalle Valo }; 2627e705c121SKalle Valo int tid, ret; 2628e705c121SKalle Valo unsigned long _tids = tids; 2629e705c121SKalle Valo 2630e705c121SKalle Valo /* convert TIDs to ACs - we don't support TSPEC so that's OK 2631e705c121SKalle Valo * Note that this field is reserved and unused by firmware not 2632e705c121SKalle Valo * supporting GO uAPSD, so it's safe to always do this. 2633e705c121SKalle Valo */ 2634e705c121SKalle Valo for_each_set_bit(tid, &_tids, IWL_MAX_TID_COUNT) 2635e705c121SKalle Valo cmd.awake_acs |= BIT(tid_to_ucode_ac[tid]); 2636e705c121SKalle Valo 2637e705c121SKalle Valo /* If we're releasing frames from aggregation queues then check if the 2638e705c121SKalle Valo * all queues combined that we're releasing frames from have 2639e705c121SKalle Valo * - more frames than the service period, in which case more_data 2640e705c121SKalle Valo * needs to be set 2641e705c121SKalle Valo * - fewer than 'cnt' frames, in which case we need to adjust the 2642e705c121SKalle Valo * firmware command (but do that unconditionally) 2643e705c121SKalle Valo */ 2644e705c121SKalle Valo if (agg) { 2645e705c121SKalle Valo int remaining = cnt; 264636be0eb6SEmmanuel Grumbach int sleep_tx_count; 2647e705c121SKalle Valo 2648e705c121SKalle Valo spin_lock_bh(&mvmsta->lock); 2649e705c121SKalle Valo for_each_set_bit(tid, &_tids, IWL_MAX_TID_COUNT) { 2650e705c121SKalle Valo struct iwl_mvm_tid_data *tid_data; 2651e705c121SKalle Valo u16 n_queued; 2652e705c121SKalle Valo 2653e705c121SKalle Valo tid_data = &mvmsta->tid_data[tid]; 2654e705c121SKalle Valo if (WARN(tid_data->state != IWL_AGG_ON && 2655e705c121SKalle Valo tid_data->state != IWL_EMPTYING_HW_QUEUE_DELBA, 2656e705c121SKalle Valo "TID %d state is %d\n", 2657e705c121SKalle Valo tid, tid_data->state)) { 2658e705c121SKalle Valo spin_unlock_bh(&mvmsta->lock); 2659e705c121SKalle Valo ieee80211_sta_eosp(sta); 2660e705c121SKalle Valo return; 2661e705c121SKalle Valo } 2662e705c121SKalle Valo 2663e705c121SKalle Valo n_queued = iwl_mvm_tid_queued(tid_data); 2664e705c121SKalle Valo if (n_queued > remaining) { 2665e705c121SKalle Valo more_data = true; 2666e705c121SKalle Valo remaining = 0; 2667e705c121SKalle Valo break; 2668e705c121SKalle Valo } 2669e705c121SKalle Valo remaining -= n_queued; 2670e705c121SKalle Valo } 267136be0eb6SEmmanuel Grumbach sleep_tx_count = cnt - remaining; 267236be0eb6SEmmanuel Grumbach if (reason == IEEE80211_FRAME_RELEASE_UAPSD) 267336be0eb6SEmmanuel Grumbach mvmsta->sleep_tx_count = sleep_tx_count; 2674e705c121SKalle Valo spin_unlock_bh(&mvmsta->lock); 2675e705c121SKalle Valo 267636be0eb6SEmmanuel Grumbach cmd.sleep_tx_count = cpu_to_le16(sleep_tx_count); 2677e705c121SKalle Valo if (WARN_ON(cnt - remaining == 0)) { 2678e705c121SKalle Valo ieee80211_sta_eosp(sta); 2679e705c121SKalle Valo return; 2680e705c121SKalle Valo } 2681e705c121SKalle Valo } 2682e705c121SKalle Valo 2683e705c121SKalle Valo /* Note: this is ignored by firmware not supporting GO uAPSD */ 2684e705c121SKalle Valo if (more_data) 2685e705c121SKalle Valo cmd.sleep_state_flags |= cpu_to_le16(STA_SLEEP_STATE_MOREDATA); 2686e705c121SKalle Valo 2687e705c121SKalle Valo if (reason == IEEE80211_FRAME_RELEASE_PSPOLL) { 2688e705c121SKalle Valo mvmsta->next_status_eosp = true; 2689e705c121SKalle Valo cmd.sleep_state_flags |= cpu_to_le16(STA_SLEEP_STATE_PS_POLL); 2690e705c121SKalle Valo } else { 2691e705c121SKalle Valo cmd.sleep_state_flags |= cpu_to_le16(STA_SLEEP_STATE_UAPSD); 2692e705c121SKalle Valo } 2693e705c121SKalle Valo 2694156f92f2SEmmanuel Grumbach /* block the Tx queues until the FW updated the sleep Tx count */ 2695156f92f2SEmmanuel Grumbach iwl_trans_block_txq_ptrs(mvm->trans, true); 2696156f92f2SEmmanuel Grumbach 2697156f92f2SEmmanuel Grumbach ret = iwl_mvm_send_cmd_pdu(mvm, ADD_STA, 2698156f92f2SEmmanuel Grumbach CMD_ASYNC | CMD_WANT_ASYNC_CALLBACK, 2699854c5705SSara Sharon iwl_mvm_add_sta_cmd_size(mvm), &cmd); 2700e705c121SKalle Valo if (ret) 2701e705c121SKalle Valo IWL_ERR(mvm, "Failed to send ADD_STA command (%d)\n", ret); 2702e705c121SKalle Valo } 2703e705c121SKalle Valo 2704e705c121SKalle Valo void iwl_mvm_rx_eosp_notif(struct iwl_mvm *mvm, 2705e705c121SKalle Valo struct iwl_rx_cmd_buffer *rxb) 2706e705c121SKalle Valo { 2707e705c121SKalle Valo struct iwl_rx_packet *pkt = rxb_addr(rxb); 2708e705c121SKalle Valo struct iwl_mvm_eosp_notification *notif = (void *)pkt->data; 2709e705c121SKalle Valo struct ieee80211_sta *sta; 2710e705c121SKalle Valo u32 sta_id = le32_to_cpu(notif->sta_id); 2711e705c121SKalle Valo 2712e705c121SKalle Valo if (WARN_ON_ONCE(sta_id >= IWL_MVM_STATION_COUNT)) 2713e705c121SKalle Valo return; 2714e705c121SKalle Valo 2715e705c121SKalle Valo rcu_read_lock(); 2716e705c121SKalle Valo sta = rcu_dereference(mvm->fw_id_to_mac_id[sta_id]); 2717e705c121SKalle Valo if (!IS_ERR_OR_NULL(sta)) 2718e705c121SKalle Valo ieee80211_sta_eosp(sta); 2719e705c121SKalle Valo rcu_read_unlock(); 2720e705c121SKalle Valo } 2721e705c121SKalle Valo 2722e705c121SKalle Valo void iwl_mvm_sta_modify_disable_tx(struct iwl_mvm *mvm, 2723e705c121SKalle Valo struct iwl_mvm_sta *mvmsta, bool disable) 2724e705c121SKalle Valo { 2725e705c121SKalle Valo struct iwl_mvm_add_sta_cmd cmd = { 2726e705c121SKalle Valo .add_modify = STA_MODE_MODIFY, 2727e705c121SKalle Valo .sta_id = mvmsta->sta_id, 2728e705c121SKalle Valo .station_flags = disable ? cpu_to_le32(STA_FLG_DISABLE_TX) : 0, 2729e705c121SKalle Valo .station_flags_msk = cpu_to_le32(STA_FLG_DISABLE_TX), 2730e705c121SKalle Valo .mac_id_n_color = cpu_to_le32(mvmsta->mac_id_n_color), 2731e705c121SKalle Valo }; 2732e705c121SKalle Valo int ret; 2733e705c121SKalle Valo 2734854c5705SSara Sharon ret = iwl_mvm_send_cmd_pdu(mvm, ADD_STA, CMD_ASYNC, 2735854c5705SSara Sharon iwl_mvm_add_sta_cmd_size(mvm), &cmd); 2736e705c121SKalle Valo if (ret) 2737e705c121SKalle Valo IWL_ERR(mvm, "Failed to send ADD_STA command (%d)\n", ret); 2738e705c121SKalle Valo } 2739e705c121SKalle Valo 2740e705c121SKalle Valo void iwl_mvm_sta_modify_disable_tx_ap(struct iwl_mvm *mvm, 2741e705c121SKalle Valo struct ieee80211_sta *sta, 2742e705c121SKalle Valo bool disable) 2743e705c121SKalle Valo { 2744e705c121SKalle Valo struct iwl_mvm_sta *mvm_sta = iwl_mvm_sta_from_mac80211(sta); 2745e705c121SKalle Valo 2746e705c121SKalle Valo spin_lock_bh(&mvm_sta->lock); 2747e705c121SKalle Valo 2748e705c121SKalle Valo if (mvm_sta->disable_tx == disable) { 2749e705c121SKalle Valo spin_unlock_bh(&mvm_sta->lock); 2750e705c121SKalle Valo return; 2751e705c121SKalle Valo } 2752e705c121SKalle Valo 2753e705c121SKalle Valo mvm_sta->disable_tx = disable; 2754e705c121SKalle Valo 2755e705c121SKalle Valo /* 2756e705c121SKalle Valo * Tell mac80211 to start/stop queuing tx for this station, 2757e705c121SKalle Valo * but don't stop queuing if there are still pending frames 2758e705c121SKalle Valo * for this station. 2759e705c121SKalle Valo */ 2760e705c121SKalle Valo if (disable || !atomic_read(&mvm->pending_frames[mvm_sta->sta_id])) 2761e705c121SKalle Valo ieee80211_sta_block_awake(mvm->hw, sta, disable); 2762e705c121SKalle Valo 2763e705c121SKalle Valo iwl_mvm_sta_modify_disable_tx(mvm, mvm_sta, disable); 2764e705c121SKalle Valo 2765e705c121SKalle Valo spin_unlock_bh(&mvm_sta->lock); 2766e705c121SKalle Valo } 2767e705c121SKalle Valo 2768e705c121SKalle Valo void iwl_mvm_modify_all_sta_disable_tx(struct iwl_mvm *mvm, 2769e705c121SKalle Valo struct iwl_mvm_vif *mvmvif, 2770e705c121SKalle Valo bool disable) 2771e705c121SKalle Valo { 2772e705c121SKalle Valo struct ieee80211_sta *sta; 2773e705c121SKalle Valo struct iwl_mvm_sta *mvm_sta; 2774e705c121SKalle Valo int i; 2775e705c121SKalle Valo 2776e705c121SKalle Valo lockdep_assert_held(&mvm->mutex); 2777e705c121SKalle Valo 2778e705c121SKalle Valo /* Block/unblock all the stations of the given mvmvif */ 2779e705c121SKalle Valo for (i = 0; i < IWL_MVM_STATION_COUNT; i++) { 2780e705c121SKalle Valo sta = rcu_dereference_protected(mvm->fw_id_to_mac_id[i], 2781e705c121SKalle Valo lockdep_is_held(&mvm->mutex)); 2782e705c121SKalle Valo if (IS_ERR_OR_NULL(sta)) 2783e705c121SKalle Valo continue; 2784e705c121SKalle Valo 2785e705c121SKalle Valo mvm_sta = iwl_mvm_sta_from_mac80211(sta); 2786e705c121SKalle Valo if (mvm_sta->mac_id_n_color != 2787e705c121SKalle Valo FW_CMD_ID_AND_COLOR(mvmvif->id, mvmvif->color)) 2788e705c121SKalle Valo continue; 2789e705c121SKalle Valo 2790e705c121SKalle Valo iwl_mvm_sta_modify_disable_tx_ap(mvm, sta, disable); 2791e705c121SKalle Valo } 2792e705c121SKalle Valo } 2793e705c121SKalle Valo 2794e705c121SKalle Valo void iwl_mvm_csa_client_absent(struct iwl_mvm *mvm, struct ieee80211_vif *vif) 2795e705c121SKalle Valo { 2796e705c121SKalle Valo struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 2797e705c121SKalle Valo struct iwl_mvm_sta *mvmsta; 2798e705c121SKalle Valo 2799e705c121SKalle Valo rcu_read_lock(); 2800e705c121SKalle Valo 2801e705c121SKalle Valo mvmsta = iwl_mvm_sta_from_staid_rcu(mvm, mvmvif->ap_sta_id); 2802e705c121SKalle Valo 2803e705c121SKalle Valo if (!WARN_ON(!mvmsta)) 2804e705c121SKalle Valo iwl_mvm_sta_modify_disable_tx(mvm, mvmsta, true); 2805e705c121SKalle Valo 2806e705c121SKalle Valo rcu_read_unlock(); 2807e705c121SKalle Valo } 2808