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 3649794c64fSLiad Kaufman /* 3659794c64fSLiad Kaufman * Remove a queue from a station's resources. 3669794c64fSLiad Kaufman * Note that this only marks as free. It DOESN'T delete a BA agreement, and 3679794c64fSLiad Kaufman * doesn't disable the queue 3689794c64fSLiad Kaufman */ 3699794c64fSLiad Kaufman static int iwl_mvm_remove_sta_queue_marking(struct iwl_mvm *mvm, int queue) 3709794c64fSLiad Kaufman { 3719794c64fSLiad Kaufman struct ieee80211_sta *sta; 3729794c64fSLiad Kaufman struct iwl_mvm_sta *mvmsta; 3739794c64fSLiad Kaufman unsigned long tid_bitmap; 3749794c64fSLiad Kaufman unsigned long disable_agg_tids = 0; 3759794c64fSLiad Kaufman u8 sta_id; 3769794c64fSLiad Kaufman int tid; 3779794c64fSLiad Kaufman 3789794c64fSLiad Kaufman lockdep_assert_held(&mvm->mutex); 3799794c64fSLiad Kaufman 3809794c64fSLiad Kaufman spin_lock_bh(&mvm->queue_info_lock); 3819794c64fSLiad Kaufman sta_id = mvm->queue_info[queue].ra_sta_id; 3829794c64fSLiad Kaufman tid_bitmap = mvm->queue_info[queue].tid_bitmap; 3839794c64fSLiad Kaufman spin_unlock_bh(&mvm->queue_info_lock); 3849794c64fSLiad Kaufman 3859794c64fSLiad Kaufman rcu_read_lock(); 3869794c64fSLiad Kaufman 3879794c64fSLiad Kaufman sta = rcu_dereference(mvm->fw_id_to_mac_id[sta_id]); 3889794c64fSLiad Kaufman 3899794c64fSLiad Kaufman if (WARN_ON_ONCE(IS_ERR_OR_NULL(sta))) { 3909794c64fSLiad Kaufman rcu_read_unlock(); 3919794c64fSLiad Kaufman return 0; 3929794c64fSLiad Kaufman } 3939794c64fSLiad Kaufman 3949794c64fSLiad Kaufman mvmsta = iwl_mvm_sta_from_mac80211(sta); 3959794c64fSLiad Kaufman 3969794c64fSLiad Kaufman spin_lock_bh(&mvmsta->lock); 3979794c64fSLiad Kaufman for_each_set_bit(tid, &tid_bitmap, IWL_MAX_TID_COUNT + 1) { 3989794c64fSLiad Kaufman mvmsta->tid_data[tid].txq_id = IEEE80211_INVAL_HW_QUEUE; 3999794c64fSLiad Kaufman 4009794c64fSLiad Kaufman if (mvmsta->tid_data[tid].state == IWL_AGG_ON) 4019794c64fSLiad Kaufman disable_agg_tids |= BIT(tid); 4029794c64fSLiad Kaufman } 4039794c64fSLiad Kaufman mvmsta->tfd_queue_msk &= ~BIT(queue); /* Don't use this queue anymore */ 4049794c64fSLiad Kaufman 4059794c64fSLiad Kaufman spin_unlock_bh(&mvmsta->lock); 4069794c64fSLiad Kaufman 4079794c64fSLiad Kaufman rcu_read_unlock(); 4089794c64fSLiad Kaufman 4099794c64fSLiad Kaufman spin_lock(&mvm->queue_info_lock); 4109794c64fSLiad Kaufman /* Unmap MAC queues and TIDs from this queue */ 4119794c64fSLiad Kaufman mvm->queue_info[queue].hw_queue_to_mac80211 = 0; 4129794c64fSLiad Kaufman mvm->queue_info[queue].hw_queue_refcount = 0; 4139794c64fSLiad Kaufman mvm->queue_info[queue].tid_bitmap = 0; 4149794c64fSLiad Kaufman spin_unlock(&mvm->queue_info_lock); 4159794c64fSLiad Kaufman 4169794c64fSLiad Kaufman return disable_agg_tids; 4179794c64fSLiad Kaufman } 4189794c64fSLiad Kaufman 41924afba76SLiad Kaufman static int iwl_mvm_sta_alloc_queue(struct iwl_mvm *mvm, 42024afba76SLiad Kaufman struct ieee80211_sta *sta, u8 ac, int tid, 42124afba76SLiad Kaufman struct ieee80211_hdr *hdr) 42224afba76SLiad Kaufman { 42324afba76SLiad Kaufman struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta); 42424afba76SLiad Kaufman struct iwl_trans_txq_scd_cfg cfg = { 42524afba76SLiad Kaufman .fifo = iwl_mvm_ac_to_tx_fifo[ac], 42624afba76SLiad Kaufman .sta_id = mvmsta->sta_id, 42724afba76SLiad Kaufman .tid = tid, 42824afba76SLiad Kaufman .frame_limit = IWL_FRAME_LIMIT, 42924afba76SLiad Kaufman }; 43024afba76SLiad Kaufman unsigned int wdg_timeout = 43124afba76SLiad Kaufman iwl_mvm_get_wd_timeout(mvm, mvmsta->vif, false, false); 43224afba76SLiad Kaufman u8 mac_queue = mvmsta->vif->hw_queue[ac]; 43324afba76SLiad Kaufman int queue = -1; 4349794c64fSLiad Kaufman bool using_inactive_queue = false; 4359794c64fSLiad Kaufman unsigned long disable_agg_tids = 0; 4369794c64fSLiad Kaufman enum iwl_mvm_agg_state queue_state; 43724afba76SLiad Kaufman int ssn; 438cf961e16SLiad Kaufman int ret; 43924afba76SLiad Kaufman 44024afba76SLiad Kaufman lockdep_assert_held(&mvm->mutex); 44124afba76SLiad Kaufman 442d2515a99SLiad Kaufman spin_lock_bh(&mvm->queue_info_lock); 44324afba76SLiad Kaufman 44424afba76SLiad Kaufman /* 44524afba76SLiad Kaufman * Non-QoS, QoS NDP and MGMT frames should go to a MGMT queue, if one 44624afba76SLiad Kaufman * exists 44724afba76SLiad Kaufman */ 44824afba76SLiad Kaufman if (!ieee80211_is_data_qos(hdr->frame_control) || 44924afba76SLiad Kaufman ieee80211_is_qos_nullfunc(hdr->frame_control)) { 4509794c64fSLiad Kaufman queue = iwl_mvm_find_free_queue(mvm, mvmsta->sta_id, 4519794c64fSLiad Kaufman IWL_MVM_DQA_MIN_MGMT_QUEUE, 45224afba76SLiad Kaufman IWL_MVM_DQA_MAX_MGMT_QUEUE); 45324afba76SLiad Kaufman if (queue >= IWL_MVM_DQA_MIN_MGMT_QUEUE) 45424afba76SLiad Kaufman IWL_DEBUG_TX_QUEUES(mvm, "Found free MGMT queue #%d\n", 45524afba76SLiad Kaufman queue); 45624afba76SLiad Kaufman 45724afba76SLiad Kaufman /* If no such queue is found, we'll use a DATA queue instead */ 45824afba76SLiad Kaufman } 45924afba76SLiad Kaufman 4609794c64fSLiad Kaufman if ((queue < 0 && mvmsta->reserved_queue != IEEE80211_INVAL_HW_QUEUE) && 4619794c64fSLiad Kaufman (mvm->queue_info[mvmsta->reserved_queue].status == 4629794c64fSLiad Kaufman IWL_MVM_QUEUE_RESERVED || 4639794c64fSLiad Kaufman mvm->queue_info[mvmsta->reserved_queue].status == 4649794c64fSLiad Kaufman IWL_MVM_QUEUE_INACTIVE)) { 46524afba76SLiad Kaufman queue = mvmsta->reserved_queue; 4669794c64fSLiad Kaufman mvm->queue_info[queue].reserved = true; 46724afba76SLiad Kaufman IWL_DEBUG_TX_QUEUES(mvm, "Using reserved queue #%d\n", queue); 46824afba76SLiad Kaufman } 46924afba76SLiad Kaufman 47024afba76SLiad Kaufman if (queue < 0) 4719794c64fSLiad Kaufman queue = iwl_mvm_find_free_queue(mvm, mvmsta->sta_id, 4729794c64fSLiad Kaufman IWL_MVM_DQA_MIN_DATA_QUEUE, 47324afba76SLiad Kaufman IWL_MVM_DQA_MAX_DATA_QUEUE); 474cf961e16SLiad Kaufman 475cf961e16SLiad Kaufman /* 4769794c64fSLiad Kaufman * Check if this queue is already allocated but inactive. 4779794c64fSLiad Kaufman * In such a case, we'll need to first free this queue before enabling 4789794c64fSLiad Kaufman * it again, so we'll mark it as reserved to make sure no new traffic 4799794c64fSLiad Kaufman * arrives on it 4809794c64fSLiad Kaufman */ 4819794c64fSLiad Kaufman if (queue > 0 && 4829794c64fSLiad Kaufman mvm->queue_info[queue].status == IWL_MVM_QUEUE_INACTIVE) { 4839794c64fSLiad Kaufman mvm->queue_info[queue].status = IWL_MVM_QUEUE_RESERVED; 4849794c64fSLiad Kaufman using_inactive_queue = true; 4859794c64fSLiad Kaufman IWL_DEBUG_TX_QUEUES(mvm, 4869794c64fSLiad Kaufman "Re-assigning TXQ %d: sta_id=%d, tid=%d\n", 4879794c64fSLiad Kaufman queue, mvmsta->sta_id, tid); 4889794c64fSLiad Kaufman } 4899794c64fSLiad Kaufman 4909794c64fSLiad Kaufman /* 491cf961e16SLiad Kaufman * Mark TXQ as ready, even though it hasn't been fully configured yet, 492cf961e16SLiad Kaufman * to make sure no one else takes it. 493cf961e16SLiad Kaufman * This will allow avoiding re-acquiring the lock at the end of the 494cf961e16SLiad Kaufman * configuration. On error we'll mark it back as free. 495cf961e16SLiad Kaufman */ 49624afba76SLiad Kaufman if (queue >= 0) 497cf961e16SLiad Kaufman mvm->queue_info[queue].status = IWL_MVM_QUEUE_READY; 49824afba76SLiad Kaufman 499d2515a99SLiad Kaufman spin_unlock_bh(&mvm->queue_info_lock); 50024afba76SLiad Kaufman 50124afba76SLiad Kaufman /* TODO: support shared queues for same RA */ 50224afba76SLiad Kaufman if (queue < 0) 50324afba76SLiad Kaufman return -ENOSPC; 50424afba76SLiad Kaufman 50524afba76SLiad Kaufman /* 50624afba76SLiad Kaufman * Actual en/disablement of aggregations is through the ADD_STA HCMD, 50724afba76SLiad Kaufman * but for configuring the SCD to send A-MPDUs we need to mark the queue 50824afba76SLiad Kaufman * as aggregatable. 50924afba76SLiad Kaufman * Mark all DATA queues as allowing to be aggregated at some point 51024afba76SLiad Kaufman */ 511d5216a28SLiad Kaufman cfg.aggregate = (queue >= IWL_MVM_DQA_MIN_DATA_QUEUE || 512d5216a28SLiad Kaufman queue == IWL_MVM_DQA_BSS_CLIENT_QUEUE); 51324afba76SLiad Kaufman 5149794c64fSLiad Kaufman /* 5159794c64fSLiad Kaufman * If this queue was previously inactive (idle) - we need to free it 5169794c64fSLiad Kaufman * first 5179794c64fSLiad Kaufman */ 5189794c64fSLiad Kaufman if (using_inactive_queue) { 5199794c64fSLiad Kaufman struct iwl_scd_txq_cfg_cmd cmd = { 5209794c64fSLiad Kaufman .scd_queue = queue, 5219794c64fSLiad Kaufman .enable = 0, 5229794c64fSLiad Kaufman }; 5239794c64fSLiad Kaufman 5249794c64fSLiad Kaufman disable_agg_tids = iwl_mvm_remove_sta_queue_marking(mvm, queue); 5259794c64fSLiad Kaufman 5269794c64fSLiad Kaufman /* Disable the queue */ 5279794c64fSLiad Kaufman iwl_mvm_invalidate_sta_queue(mvm, queue, disable_agg_tids, 5289794c64fSLiad Kaufman true); 5299794c64fSLiad Kaufman iwl_trans_txq_disable(mvm->trans, queue, false); 5309794c64fSLiad Kaufman ret = iwl_mvm_send_cmd_pdu(mvm, SCD_QUEUE_CFG, 0, sizeof(cmd), 5319794c64fSLiad Kaufman &cmd); 5329794c64fSLiad Kaufman if (ret) { 5339794c64fSLiad Kaufman IWL_ERR(mvm, 5349794c64fSLiad Kaufman "Failed to free inactive queue %d (ret=%d)\n", 5359794c64fSLiad Kaufman queue, ret); 5369794c64fSLiad Kaufman 5379794c64fSLiad Kaufman /* Re-mark the inactive queue as inactive */ 5389794c64fSLiad Kaufman spin_lock_bh(&mvm->queue_info_lock); 5399794c64fSLiad Kaufman mvm->queue_info[queue].status = IWL_MVM_QUEUE_INACTIVE; 5409794c64fSLiad Kaufman spin_unlock_bh(&mvm->queue_info_lock); 5419794c64fSLiad Kaufman 5429794c64fSLiad Kaufman return ret; 5439794c64fSLiad Kaufman } 5449794c64fSLiad Kaufman } 5459794c64fSLiad Kaufman 54624afba76SLiad Kaufman IWL_DEBUG_TX_QUEUES(mvm, "Allocating queue #%d to sta %d on tid %d\n", 54724afba76SLiad Kaufman queue, mvmsta->sta_id, tid); 54824afba76SLiad Kaufman 54924afba76SLiad Kaufman ssn = IEEE80211_SEQ_TO_SN(le16_to_cpu(hdr->seq_ctrl)); 55024afba76SLiad Kaufman iwl_mvm_enable_txq(mvm, queue, mac_queue, ssn, &cfg, 55124afba76SLiad Kaufman wdg_timeout); 55224afba76SLiad Kaufman 55324afba76SLiad Kaufman spin_lock_bh(&mvmsta->lock); 55424afba76SLiad Kaufman mvmsta->tid_data[tid].txq_id = queue; 5559794c64fSLiad Kaufman mvmsta->tid_data[tid].is_tid_active = true; 55624afba76SLiad Kaufman mvmsta->tfd_queue_msk |= BIT(queue); 5579794c64fSLiad Kaufman queue_state = mvmsta->tid_data[tid].state; 55824afba76SLiad Kaufman 55924afba76SLiad Kaufman if (mvmsta->reserved_queue == queue) 56024afba76SLiad Kaufman mvmsta->reserved_queue = IEEE80211_INVAL_HW_QUEUE; 56124afba76SLiad Kaufman spin_unlock_bh(&mvmsta->lock); 56224afba76SLiad Kaufman 563cf961e16SLiad Kaufman ret = iwl_mvm_sta_send_to_fw(mvm, sta, true, STA_MODIFY_QUEUES); 564cf961e16SLiad Kaufman if (ret) 565cf961e16SLiad Kaufman goto out_err; 566cf961e16SLiad Kaufman 5679794c64fSLiad Kaufman /* If we need to re-enable aggregations... */ 5689794c64fSLiad Kaufman if (queue_state == IWL_AGG_ON) 5699794c64fSLiad Kaufman ret = iwl_mvm_sta_tx_agg(mvm, sta, tid, queue, true); 5709794c64fSLiad Kaufman 5719794c64fSLiad Kaufman return ret; 572cf961e16SLiad Kaufman 573cf961e16SLiad Kaufman out_err: 574cf961e16SLiad Kaufman iwl_mvm_disable_txq(mvm, queue, mac_queue, tid, 0); 575cf961e16SLiad Kaufman 576cf961e16SLiad Kaufman return ret; 57724afba76SLiad Kaufman } 57824afba76SLiad Kaufman 57924afba76SLiad Kaufman static inline u8 iwl_mvm_tid_to_ac_queue(int tid) 58024afba76SLiad Kaufman { 58124afba76SLiad Kaufman if (tid == IWL_MAX_TID_COUNT) 58224afba76SLiad Kaufman return IEEE80211_AC_VO; /* MGMT */ 58324afba76SLiad Kaufman 58424afba76SLiad Kaufman return tid_to_mac80211_ac[tid]; 58524afba76SLiad Kaufman } 58624afba76SLiad Kaufman 58724afba76SLiad Kaufman static void iwl_mvm_tx_deferred_stream(struct iwl_mvm *mvm, 58824afba76SLiad Kaufman struct ieee80211_sta *sta, int tid) 58924afba76SLiad Kaufman { 59024afba76SLiad Kaufman struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta); 59124afba76SLiad Kaufman struct iwl_mvm_tid_data *tid_data = &mvmsta->tid_data[tid]; 59224afba76SLiad Kaufman struct sk_buff *skb; 59324afba76SLiad Kaufman struct ieee80211_hdr *hdr; 59424afba76SLiad Kaufman struct sk_buff_head deferred_tx; 59524afba76SLiad Kaufman u8 mac_queue; 59624afba76SLiad Kaufman bool no_queue = false; /* Marks if there is a problem with the queue */ 59724afba76SLiad Kaufman u8 ac; 59824afba76SLiad Kaufman 59924afba76SLiad Kaufman lockdep_assert_held(&mvm->mutex); 60024afba76SLiad Kaufman 60124afba76SLiad Kaufman skb = skb_peek(&tid_data->deferred_tx_frames); 60224afba76SLiad Kaufman if (!skb) 60324afba76SLiad Kaufman return; 60424afba76SLiad Kaufman hdr = (void *)skb->data; 60524afba76SLiad Kaufman 60624afba76SLiad Kaufman ac = iwl_mvm_tid_to_ac_queue(tid); 60724afba76SLiad Kaufman mac_queue = IEEE80211_SKB_CB(skb)->hw_queue; 60824afba76SLiad Kaufman 60924afba76SLiad Kaufman if (tid_data->txq_id == IEEE80211_INVAL_HW_QUEUE && 61024afba76SLiad Kaufman iwl_mvm_sta_alloc_queue(mvm, sta, ac, tid, hdr)) { 61124afba76SLiad Kaufman IWL_ERR(mvm, 61224afba76SLiad Kaufman "Can't alloc TXQ for sta %d tid %d - dropping frame\n", 61324afba76SLiad Kaufman mvmsta->sta_id, tid); 61424afba76SLiad Kaufman 61524afba76SLiad Kaufman /* 61624afba76SLiad Kaufman * Mark queue as problematic so later the deferred traffic is 61724afba76SLiad Kaufman * freed, as we can do nothing with it 61824afba76SLiad Kaufman */ 61924afba76SLiad Kaufman no_queue = true; 62024afba76SLiad Kaufman } 62124afba76SLiad Kaufman 62224afba76SLiad Kaufman __skb_queue_head_init(&deferred_tx); 62324afba76SLiad Kaufman 624d2515a99SLiad Kaufman /* Disable bottom-halves when entering TX path */ 625d2515a99SLiad Kaufman local_bh_disable(); 62624afba76SLiad Kaufman spin_lock(&mvmsta->lock); 62724afba76SLiad Kaufman skb_queue_splice_init(&tid_data->deferred_tx_frames, &deferred_tx); 62824afba76SLiad Kaufman spin_unlock(&mvmsta->lock); 62924afba76SLiad Kaufman 63024afba76SLiad Kaufman while ((skb = __skb_dequeue(&deferred_tx))) 63124afba76SLiad Kaufman if (no_queue || iwl_mvm_tx_skb(mvm, skb, sta)) 63224afba76SLiad Kaufman ieee80211_free_txskb(mvm->hw, skb); 63324afba76SLiad Kaufman local_bh_enable(); 63424afba76SLiad Kaufman 63524afba76SLiad Kaufman /* Wake queue */ 63624afba76SLiad Kaufman iwl_mvm_start_mac_queues(mvm, BIT(mac_queue)); 63724afba76SLiad Kaufman } 63824afba76SLiad Kaufman 63924afba76SLiad Kaufman void iwl_mvm_add_new_dqa_stream_wk(struct work_struct *wk) 64024afba76SLiad Kaufman { 64124afba76SLiad Kaufman struct iwl_mvm *mvm = container_of(wk, struct iwl_mvm, 64224afba76SLiad Kaufman add_stream_wk); 64324afba76SLiad Kaufman struct ieee80211_sta *sta; 64424afba76SLiad Kaufman struct iwl_mvm_sta *mvmsta; 64524afba76SLiad Kaufman unsigned long deferred_tid_traffic; 64624afba76SLiad Kaufman int sta_id, tid; 64724afba76SLiad Kaufman 6489794c64fSLiad Kaufman /* Check inactivity of queues */ 6499794c64fSLiad Kaufman iwl_mvm_inactivity_check(mvm); 6509794c64fSLiad Kaufman 65124afba76SLiad Kaufman mutex_lock(&mvm->mutex); 65224afba76SLiad Kaufman 65324afba76SLiad Kaufman /* Go over all stations with deferred traffic */ 65424afba76SLiad Kaufman for_each_set_bit(sta_id, mvm->sta_deferred_frames, 65524afba76SLiad Kaufman IWL_MVM_STATION_COUNT) { 65624afba76SLiad Kaufman clear_bit(sta_id, mvm->sta_deferred_frames); 65724afba76SLiad Kaufman sta = rcu_dereference_protected(mvm->fw_id_to_mac_id[sta_id], 65824afba76SLiad Kaufman lockdep_is_held(&mvm->mutex)); 65924afba76SLiad Kaufman if (IS_ERR_OR_NULL(sta)) 66024afba76SLiad Kaufman continue; 66124afba76SLiad Kaufman 66224afba76SLiad Kaufman mvmsta = iwl_mvm_sta_from_mac80211(sta); 66324afba76SLiad Kaufman deferred_tid_traffic = mvmsta->deferred_traffic_tid_map; 66424afba76SLiad Kaufman 66524afba76SLiad Kaufman for_each_set_bit(tid, &deferred_tid_traffic, 66624afba76SLiad Kaufman IWL_MAX_TID_COUNT + 1) 66724afba76SLiad Kaufman iwl_mvm_tx_deferred_stream(mvm, sta, tid); 66824afba76SLiad Kaufman } 66924afba76SLiad Kaufman 67024afba76SLiad Kaufman mutex_unlock(&mvm->mutex); 67124afba76SLiad Kaufman } 67224afba76SLiad Kaufman 67324afba76SLiad Kaufman static int iwl_mvm_reserve_sta_stream(struct iwl_mvm *mvm, 674d5216a28SLiad Kaufman struct ieee80211_sta *sta, 675d5216a28SLiad Kaufman enum nl80211_iftype vif_type) 67624afba76SLiad Kaufman { 67724afba76SLiad Kaufman struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta); 67824afba76SLiad Kaufman int queue; 67924afba76SLiad Kaufman 6809794c64fSLiad Kaufman /* 6819794c64fSLiad Kaufman * Check for inactive queues, so we don't reach a situation where we 6829794c64fSLiad Kaufman * can't add a STA due to a shortage in queues that doesn't really exist 6839794c64fSLiad Kaufman */ 6849794c64fSLiad Kaufman iwl_mvm_inactivity_check(mvm); 6859794c64fSLiad Kaufman 68624afba76SLiad Kaufman spin_lock_bh(&mvm->queue_info_lock); 68724afba76SLiad Kaufman 68824afba76SLiad Kaufman /* Make sure we have free resources for this STA */ 689d5216a28SLiad Kaufman if (vif_type == NL80211_IFTYPE_STATION && !sta->tdls && 690d5216a28SLiad Kaufman !mvm->queue_info[IWL_MVM_DQA_BSS_CLIENT_QUEUE].hw_queue_refcount && 691cf961e16SLiad Kaufman (mvm->queue_info[IWL_MVM_DQA_BSS_CLIENT_QUEUE].status == 692cf961e16SLiad Kaufman IWL_MVM_QUEUE_FREE)) 693d5216a28SLiad Kaufman queue = IWL_MVM_DQA_BSS_CLIENT_QUEUE; 694d5216a28SLiad Kaufman else 6959794c64fSLiad Kaufman queue = iwl_mvm_find_free_queue(mvm, mvmsta->sta_id, 6969794c64fSLiad Kaufman IWL_MVM_DQA_MIN_DATA_QUEUE, 69724afba76SLiad Kaufman IWL_MVM_DQA_MAX_DATA_QUEUE); 69824afba76SLiad Kaufman if (queue < 0) { 69924afba76SLiad Kaufman spin_unlock_bh(&mvm->queue_info_lock); 70024afba76SLiad Kaufman IWL_ERR(mvm, "No available queues for new station\n"); 70124afba76SLiad Kaufman return -ENOSPC; 70224afba76SLiad Kaufman } 703cf961e16SLiad Kaufman mvm->queue_info[queue].status = IWL_MVM_QUEUE_RESERVED; 70424afba76SLiad Kaufman 70524afba76SLiad Kaufman spin_unlock_bh(&mvm->queue_info_lock); 70624afba76SLiad Kaufman 70724afba76SLiad Kaufman mvmsta->reserved_queue = queue; 70824afba76SLiad Kaufman 70924afba76SLiad Kaufman IWL_DEBUG_TX_QUEUES(mvm, "Reserving data queue #%d for sta_id %d\n", 71024afba76SLiad Kaufman queue, mvmsta->sta_id); 71124afba76SLiad Kaufman 71224afba76SLiad Kaufman return 0; 71324afba76SLiad Kaufman } 71424afba76SLiad Kaufman 715e705c121SKalle Valo int iwl_mvm_add_sta(struct iwl_mvm *mvm, 716e705c121SKalle Valo struct ieee80211_vif *vif, 717e705c121SKalle Valo struct ieee80211_sta *sta) 718e705c121SKalle Valo { 719e705c121SKalle Valo struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 720e705c121SKalle Valo struct iwl_mvm_sta *mvm_sta = iwl_mvm_sta_from_mac80211(sta); 721a571f5f6SSara Sharon struct iwl_mvm_rxq_dup_data *dup_data; 722e705c121SKalle Valo int i, ret, sta_id; 723e705c121SKalle Valo 724e705c121SKalle Valo lockdep_assert_held(&mvm->mutex); 725e705c121SKalle Valo 726e705c121SKalle Valo if (!test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status)) 727e705c121SKalle Valo sta_id = iwl_mvm_find_free_sta_id(mvm, 728e705c121SKalle Valo ieee80211_vif_type_p2p(vif)); 729e705c121SKalle Valo else 730e705c121SKalle Valo sta_id = mvm_sta->sta_id; 731e705c121SKalle Valo 732e705c121SKalle Valo if (sta_id == IWL_MVM_STATION_COUNT) 733e705c121SKalle Valo return -ENOSPC; 734e705c121SKalle Valo 735e705c121SKalle Valo spin_lock_init(&mvm_sta->lock); 736e705c121SKalle Valo 737e705c121SKalle Valo mvm_sta->sta_id = sta_id; 738e705c121SKalle Valo mvm_sta->mac_id_n_color = FW_CMD_ID_AND_COLOR(mvmvif->id, 739e705c121SKalle Valo mvmvif->color); 740e705c121SKalle Valo mvm_sta->vif = vif; 741e705c121SKalle Valo mvm_sta->max_agg_bufsize = LINK_QUAL_AGG_FRAME_LIMIT_DEF; 742e705c121SKalle Valo mvm_sta->tx_protection = 0; 743e705c121SKalle Valo mvm_sta->tt_tx_protection = false; 744e705c121SKalle Valo 745e705c121SKalle Valo /* HW restart, don't assume the memory has been zeroed */ 746e705c121SKalle Valo atomic_set(&mvm->pending_frames[sta_id], 0); 747e705c121SKalle Valo mvm_sta->tid_disable_agg = 0xffff; /* No aggs at first */ 748e705c121SKalle Valo mvm_sta->tfd_queue_msk = 0; 749e705c121SKalle Valo 750e705c121SKalle Valo /* allocate new queues for a TDLS station */ 751e705c121SKalle Valo if (sta->tdls) { 752e705c121SKalle Valo ret = iwl_mvm_tdls_sta_init(mvm, sta); 753e705c121SKalle Valo if (ret) 754e705c121SKalle Valo return ret; 75524afba76SLiad Kaufman } else if (!iwl_mvm_is_dqa_supported(mvm)) { 756e705c121SKalle Valo for (i = 0; i < IEEE80211_NUM_ACS; i++) 757e705c121SKalle Valo if (vif->hw_queue[i] != IEEE80211_INVAL_HW_QUEUE) 758e705c121SKalle Valo mvm_sta->tfd_queue_msk |= BIT(vif->hw_queue[i]); 759e705c121SKalle Valo } 760e705c121SKalle Valo 761e705c121SKalle Valo /* for HW restart - reset everything but the sequence number */ 76224afba76SLiad Kaufman for (i = 0; i <= IWL_MAX_TID_COUNT; i++) { 763e705c121SKalle Valo u16 seq = mvm_sta->tid_data[i].seq_number; 764e705c121SKalle Valo memset(&mvm_sta->tid_data[i], 0, sizeof(mvm_sta->tid_data[i])); 765e705c121SKalle Valo mvm_sta->tid_data[i].seq_number = seq; 76624afba76SLiad Kaufman 76724afba76SLiad Kaufman if (!iwl_mvm_is_dqa_supported(mvm)) 76824afba76SLiad Kaufman continue; 76924afba76SLiad Kaufman 77024afba76SLiad Kaufman /* 77124afba76SLiad Kaufman * Mark all queues for this STA as unallocated and defer TX 77224afba76SLiad Kaufman * frames until the queue is allocated 77324afba76SLiad Kaufman */ 77424afba76SLiad Kaufman mvm_sta->tid_data[i].txq_id = IEEE80211_INVAL_HW_QUEUE; 77524afba76SLiad Kaufman skb_queue_head_init(&mvm_sta->tid_data[i].deferred_tx_frames); 776e705c121SKalle Valo } 77724afba76SLiad Kaufman mvm_sta->deferred_traffic_tid_map = 0; 778e705c121SKalle Valo mvm_sta->agg_tids = 0; 779e705c121SKalle Valo 780a571f5f6SSara Sharon if (iwl_mvm_has_new_rx_api(mvm) && 781a571f5f6SSara Sharon !test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status)) { 782a571f5f6SSara Sharon dup_data = kcalloc(mvm->trans->num_rx_queues, 783a571f5f6SSara Sharon sizeof(*dup_data), 784a571f5f6SSara Sharon GFP_KERNEL); 785a571f5f6SSara Sharon if (!dup_data) 786a571f5f6SSara Sharon return -ENOMEM; 787a571f5f6SSara Sharon mvm_sta->dup_data = dup_data; 788a571f5f6SSara Sharon } 789a571f5f6SSara Sharon 79024afba76SLiad Kaufman if (iwl_mvm_is_dqa_supported(mvm)) { 791d5216a28SLiad Kaufman ret = iwl_mvm_reserve_sta_stream(mvm, sta, 792d5216a28SLiad Kaufman ieee80211_vif_type_p2p(vif)); 79324afba76SLiad Kaufman if (ret) 79424afba76SLiad Kaufman goto err; 79524afba76SLiad Kaufman } 79624afba76SLiad Kaufman 79724afba76SLiad Kaufman ret = iwl_mvm_sta_send_to_fw(mvm, sta, false, 0); 798e705c121SKalle Valo if (ret) 799e705c121SKalle Valo goto err; 800e705c121SKalle Valo 801e705c121SKalle Valo if (vif->type == NL80211_IFTYPE_STATION) { 802e705c121SKalle Valo if (!sta->tdls) { 803e705c121SKalle Valo WARN_ON(mvmvif->ap_sta_id != IWL_MVM_STATION_COUNT); 804e705c121SKalle Valo mvmvif->ap_sta_id = sta_id; 805e705c121SKalle Valo } else { 806e705c121SKalle Valo WARN_ON(mvmvif->ap_sta_id == IWL_MVM_STATION_COUNT); 807e705c121SKalle Valo } 808e705c121SKalle Valo } 809e705c121SKalle Valo 810e705c121SKalle Valo rcu_assign_pointer(mvm->fw_id_to_mac_id[sta_id], sta); 811e705c121SKalle Valo 812e705c121SKalle Valo return 0; 813e705c121SKalle Valo 814e705c121SKalle Valo err: 815e705c121SKalle Valo iwl_mvm_tdls_sta_deinit(mvm, sta); 816e705c121SKalle Valo return ret; 817e705c121SKalle Valo } 818e705c121SKalle Valo 819e705c121SKalle Valo int iwl_mvm_update_sta(struct iwl_mvm *mvm, 820e705c121SKalle Valo struct ieee80211_vif *vif, 821e705c121SKalle Valo struct ieee80211_sta *sta) 822e705c121SKalle Valo { 82324afba76SLiad Kaufman return iwl_mvm_sta_send_to_fw(mvm, sta, true, 0); 824e705c121SKalle Valo } 825e705c121SKalle Valo 826e705c121SKalle Valo int iwl_mvm_drain_sta(struct iwl_mvm *mvm, struct iwl_mvm_sta *mvmsta, 827e705c121SKalle Valo bool drain) 828e705c121SKalle Valo { 829e705c121SKalle Valo struct iwl_mvm_add_sta_cmd cmd = {}; 830e705c121SKalle Valo int ret; 831e705c121SKalle Valo u32 status; 832e705c121SKalle Valo 833e705c121SKalle Valo lockdep_assert_held(&mvm->mutex); 834e705c121SKalle Valo 835e705c121SKalle Valo cmd.mac_id_n_color = cpu_to_le32(mvmsta->mac_id_n_color); 836e705c121SKalle Valo cmd.sta_id = mvmsta->sta_id; 837e705c121SKalle Valo cmd.add_modify = STA_MODE_MODIFY; 838e705c121SKalle Valo cmd.station_flags = drain ? cpu_to_le32(STA_FLG_DRAIN_FLOW) : 0; 839e705c121SKalle Valo cmd.station_flags_msk = cpu_to_le32(STA_FLG_DRAIN_FLOW); 840e705c121SKalle Valo 841e705c121SKalle Valo status = ADD_STA_SUCCESS; 842854c5705SSara Sharon ret = iwl_mvm_send_cmd_pdu_status(mvm, ADD_STA, 843854c5705SSara Sharon iwl_mvm_add_sta_cmd_size(mvm), 844e705c121SKalle Valo &cmd, &status); 845e705c121SKalle Valo if (ret) 846e705c121SKalle Valo return ret; 847e705c121SKalle Valo 848837c4da9SSara Sharon switch (status & IWL_ADD_STA_STATUS_MASK) { 849e705c121SKalle Valo case ADD_STA_SUCCESS: 850e705c121SKalle Valo IWL_DEBUG_INFO(mvm, "Frames for staid %d will drained in fw\n", 851e705c121SKalle Valo mvmsta->sta_id); 852e705c121SKalle Valo break; 853e705c121SKalle Valo default: 854e705c121SKalle Valo ret = -EIO; 855e705c121SKalle Valo IWL_ERR(mvm, "Couldn't drain frames for staid %d\n", 856e705c121SKalle Valo mvmsta->sta_id); 857e705c121SKalle Valo break; 858e705c121SKalle Valo } 859e705c121SKalle Valo 860e705c121SKalle Valo return ret; 861e705c121SKalle Valo } 862e705c121SKalle Valo 863e705c121SKalle Valo /* 864e705c121SKalle Valo * Remove a station from the FW table. Before sending the command to remove 865e705c121SKalle Valo * the station validate that the station is indeed known to the driver (sanity 866e705c121SKalle Valo * only). 867e705c121SKalle Valo */ 868e705c121SKalle Valo static int iwl_mvm_rm_sta_common(struct iwl_mvm *mvm, u8 sta_id) 869e705c121SKalle Valo { 870e705c121SKalle Valo struct ieee80211_sta *sta; 871e705c121SKalle Valo struct iwl_mvm_rm_sta_cmd rm_sta_cmd = { 872e705c121SKalle Valo .sta_id = sta_id, 873e705c121SKalle Valo }; 874e705c121SKalle Valo int ret; 875e705c121SKalle Valo 876e705c121SKalle Valo sta = rcu_dereference_protected(mvm->fw_id_to_mac_id[sta_id], 877e705c121SKalle Valo lockdep_is_held(&mvm->mutex)); 878e705c121SKalle Valo 879e705c121SKalle Valo /* Note: internal stations are marked as error values */ 880e705c121SKalle Valo if (!sta) { 881e705c121SKalle Valo IWL_ERR(mvm, "Invalid station id\n"); 882e705c121SKalle Valo return -EINVAL; 883e705c121SKalle Valo } 884e705c121SKalle Valo 885e705c121SKalle Valo ret = iwl_mvm_send_cmd_pdu(mvm, REMOVE_STA, 0, 886e705c121SKalle Valo sizeof(rm_sta_cmd), &rm_sta_cmd); 887e705c121SKalle Valo if (ret) { 888e705c121SKalle Valo IWL_ERR(mvm, "Failed to remove station. Id=%d\n", sta_id); 889e705c121SKalle Valo return ret; 890e705c121SKalle Valo } 891e705c121SKalle Valo 892e705c121SKalle Valo return 0; 893e705c121SKalle Valo } 894e705c121SKalle Valo 895e705c121SKalle Valo void iwl_mvm_sta_drained_wk(struct work_struct *wk) 896e705c121SKalle Valo { 897e705c121SKalle Valo struct iwl_mvm *mvm = container_of(wk, struct iwl_mvm, sta_drained_wk); 898e705c121SKalle Valo u8 sta_id; 899e705c121SKalle Valo 900e705c121SKalle Valo /* 901e705c121SKalle Valo * The mutex is needed because of the SYNC cmd, but not only: if the 902e705c121SKalle Valo * work would run concurrently with iwl_mvm_rm_sta, it would run before 903e705c121SKalle Valo * iwl_mvm_rm_sta sets the station as busy, and exit. Then 904e705c121SKalle Valo * iwl_mvm_rm_sta would set the station as busy, and nobody will clean 905e705c121SKalle Valo * that later. 906e705c121SKalle Valo */ 907e705c121SKalle Valo mutex_lock(&mvm->mutex); 908e705c121SKalle Valo 909e705c121SKalle Valo for_each_set_bit(sta_id, mvm->sta_drained, IWL_MVM_STATION_COUNT) { 910e705c121SKalle Valo int ret; 911e705c121SKalle Valo struct ieee80211_sta *sta = 912e705c121SKalle Valo rcu_dereference_protected(mvm->fw_id_to_mac_id[sta_id], 913e705c121SKalle Valo lockdep_is_held(&mvm->mutex)); 914e705c121SKalle Valo 915e705c121SKalle Valo /* 916e705c121SKalle Valo * This station is in use or RCU-removed; the latter happens in 917e705c121SKalle Valo * managed mode, where mac80211 removes the station before we 918e705c121SKalle Valo * can remove it from firmware (we can only do that after the 919e705c121SKalle Valo * MAC is marked unassociated), and possibly while the deauth 920e705c121SKalle Valo * frame to disconnect from the AP is still queued. Then, the 921e705c121SKalle Valo * station pointer is -ENOENT when the last skb is reclaimed. 922e705c121SKalle Valo */ 923e705c121SKalle Valo if (!IS_ERR(sta) || PTR_ERR(sta) == -ENOENT) 924e705c121SKalle Valo continue; 925e705c121SKalle Valo 926e705c121SKalle Valo if (PTR_ERR(sta) == -EINVAL) { 927e705c121SKalle Valo IWL_ERR(mvm, "Drained sta %d, but it is internal?\n", 928e705c121SKalle Valo sta_id); 929e705c121SKalle Valo continue; 930e705c121SKalle Valo } 931e705c121SKalle Valo 932e705c121SKalle Valo if (!sta) { 933e705c121SKalle Valo IWL_ERR(mvm, "Drained sta %d, but it was NULL?\n", 934e705c121SKalle Valo sta_id); 935e705c121SKalle Valo continue; 936e705c121SKalle Valo } 937e705c121SKalle Valo 938e705c121SKalle Valo WARN_ON(PTR_ERR(sta) != -EBUSY); 939e705c121SKalle Valo /* This station was removed and we waited until it got drained, 940e705c121SKalle Valo * we can now proceed and remove it. 941e705c121SKalle Valo */ 942e705c121SKalle Valo ret = iwl_mvm_rm_sta_common(mvm, sta_id); 943e705c121SKalle Valo if (ret) { 944e705c121SKalle Valo IWL_ERR(mvm, 945e705c121SKalle Valo "Couldn't remove sta %d after it was drained\n", 946e705c121SKalle Valo sta_id); 947e705c121SKalle Valo continue; 948e705c121SKalle Valo } 949e705c121SKalle Valo RCU_INIT_POINTER(mvm->fw_id_to_mac_id[sta_id], NULL); 950e705c121SKalle Valo clear_bit(sta_id, mvm->sta_drained); 951e705c121SKalle Valo 952e705c121SKalle Valo if (mvm->tfd_drained[sta_id]) { 953e705c121SKalle Valo unsigned long i, msk = mvm->tfd_drained[sta_id]; 954e705c121SKalle Valo 955e705c121SKalle Valo for_each_set_bit(i, &msk, sizeof(msk) * BITS_PER_BYTE) 956e705c121SKalle Valo iwl_mvm_disable_txq(mvm, i, i, 957e705c121SKalle Valo IWL_MAX_TID_COUNT, 0); 958e705c121SKalle Valo 959e705c121SKalle Valo mvm->tfd_drained[sta_id] = 0; 960e705c121SKalle Valo IWL_DEBUG_TDLS(mvm, "Drained sta %d, with queues %ld\n", 961e705c121SKalle Valo sta_id, msk); 962e705c121SKalle Valo } 963e705c121SKalle Valo } 964e705c121SKalle Valo 965e705c121SKalle Valo mutex_unlock(&mvm->mutex); 966e705c121SKalle Valo } 967e705c121SKalle Valo 96824afba76SLiad Kaufman static void iwl_mvm_disable_sta_queues(struct iwl_mvm *mvm, 96924afba76SLiad Kaufman struct ieee80211_vif *vif, 97024afba76SLiad Kaufman struct iwl_mvm_sta *mvm_sta) 97124afba76SLiad Kaufman { 97224afba76SLiad Kaufman int ac; 97324afba76SLiad Kaufman int i; 97424afba76SLiad Kaufman 97524afba76SLiad Kaufman lockdep_assert_held(&mvm->mutex); 97624afba76SLiad Kaufman 97724afba76SLiad Kaufman for (i = 0; i < ARRAY_SIZE(mvm_sta->tid_data); i++) { 97824afba76SLiad Kaufman if (mvm_sta->tid_data[i].txq_id == IEEE80211_INVAL_HW_QUEUE) 97924afba76SLiad Kaufman continue; 98024afba76SLiad Kaufman 98124afba76SLiad Kaufman ac = iwl_mvm_tid_to_ac_queue(i); 98224afba76SLiad Kaufman iwl_mvm_disable_txq(mvm, mvm_sta->tid_data[i].txq_id, 98324afba76SLiad Kaufman vif->hw_queue[ac], i, 0); 98424afba76SLiad Kaufman mvm_sta->tid_data[i].txq_id = IEEE80211_INVAL_HW_QUEUE; 98524afba76SLiad Kaufman } 98624afba76SLiad Kaufman } 98724afba76SLiad Kaufman 988e705c121SKalle Valo int iwl_mvm_rm_sta(struct iwl_mvm *mvm, 989e705c121SKalle Valo struct ieee80211_vif *vif, 990e705c121SKalle Valo struct ieee80211_sta *sta) 991e705c121SKalle Valo { 992e705c121SKalle Valo struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 993e705c121SKalle Valo struct iwl_mvm_sta *mvm_sta = iwl_mvm_sta_from_mac80211(sta); 994e705c121SKalle Valo int ret; 995e705c121SKalle Valo 996e705c121SKalle Valo lockdep_assert_held(&mvm->mutex); 997e705c121SKalle Valo 998a571f5f6SSara Sharon if (iwl_mvm_has_new_rx_api(mvm)) 999a571f5f6SSara Sharon kfree(mvm_sta->dup_data); 1000a571f5f6SSara Sharon 1001a6f035a0SLiad Kaufman if ((vif->type == NL80211_IFTYPE_STATION && 1002a6f035a0SLiad Kaufman mvmvif->ap_sta_id == mvm_sta->sta_id) || 1003a6f035a0SLiad Kaufman iwl_mvm_is_dqa_supported(mvm)){ 1004e705c121SKalle Valo ret = iwl_mvm_drain_sta(mvm, mvm_sta, true); 1005e705c121SKalle Valo if (ret) 1006e705c121SKalle Valo return ret; 1007e705c121SKalle Valo /* flush its queues here since we are freeing mvm_sta */ 1008e705c121SKalle Valo ret = iwl_mvm_flush_tx_path(mvm, mvm_sta->tfd_queue_msk, 0); 1009e705c121SKalle Valo if (ret) 1010e705c121SKalle Valo return ret; 1011e705c121SKalle Valo ret = iwl_trans_wait_tx_queue_empty(mvm->trans, 1012e705c121SKalle Valo mvm_sta->tfd_queue_msk); 1013e705c121SKalle Valo if (ret) 1014e705c121SKalle Valo return ret; 1015e705c121SKalle Valo ret = iwl_mvm_drain_sta(mvm, mvm_sta, false); 1016e705c121SKalle Valo 101724afba76SLiad Kaufman /* If DQA is supported - the queues can be disabled now */ 101824afba76SLiad Kaufman if (iwl_mvm_is_dqa_supported(mvm)) 101924afba76SLiad Kaufman iwl_mvm_disable_sta_queues(mvm, vif, mvm_sta); 102024afba76SLiad Kaufman 1021e705c121SKalle Valo /* if we are associated - we can't remove the AP STA now */ 1022e705c121SKalle Valo if (vif->bss_conf.assoc) 1023e705c121SKalle Valo return ret; 1024e705c121SKalle Valo 1025e705c121SKalle Valo /* unassoc - go ahead - remove the AP STA now */ 1026e705c121SKalle Valo mvmvif->ap_sta_id = IWL_MVM_STATION_COUNT; 1027e705c121SKalle Valo 1028e705c121SKalle Valo /* clear d0i3_ap_sta_id if no longer relevant */ 1029e705c121SKalle Valo if (mvm->d0i3_ap_sta_id == mvm_sta->sta_id) 1030e705c121SKalle Valo mvm->d0i3_ap_sta_id = IWL_MVM_STATION_COUNT; 1031e705c121SKalle Valo } 1032e705c121SKalle Valo 1033e705c121SKalle Valo /* 1034e705c121SKalle Valo * This shouldn't happen - the TDLS channel switch should be canceled 1035e705c121SKalle Valo * before the STA is removed. 1036e705c121SKalle Valo */ 1037e705c121SKalle Valo if (WARN_ON_ONCE(mvm->tdls_cs.peer.sta_id == mvm_sta->sta_id)) { 1038e705c121SKalle Valo mvm->tdls_cs.peer.sta_id = IWL_MVM_STATION_COUNT; 1039e705c121SKalle Valo cancel_delayed_work(&mvm->tdls_cs.dwork); 1040e705c121SKalle Valo } 1041e705c121SKalle Valo 1042e705c121SKalle Valo /* 1043e705c121SKalle Valo * Make sure that the tx response code sees the station as -EBUSY and 1044e705c121SKalle Valo * calls the drain worker. 1045e705c121SKalle Valo */ 1046e705c121SKalle Valo spin_lock_bh(&mvm_sta->lock); 1047e705c121SKalle Valo /* 1048e705c121SKalle Valo * There are frames pending on the AC queues for this station. 1049e705c121SKalle Valo * We need to wait until all the frames are drained... 1050e705c121SKalle Valo */ 1051e705c121SKalle Valo if (atomic_read(&mvm->pending_frames[mvm_sta->sta_id])) { 1052e705c121SKalle Valo rcu_assign_pointer(mvm->fw_id_to_mac_id[mvm_sta->sta_id], 1053e705c121SKalle Valo ERR_PTR(-EBUSY)); 1054e705c121SKalle Valo spin_unlock_bh(&mvm_sta->lock); 1055e705c121SKalle Valo 1056e705c121SKalle Valo /* disable TDLS sta queues on drain complete */ 1057e705c121SKalle Valo if (sta->tdls) { 1058e705c121SKalle Valo mvm->tfd_drained[mvm_sta->sta_id] = 1059e705c121SKalle Valo mvm_sta->tfd_queue_msk; 1060e705c121SKalle Valo IWL_DEBUG_TDLS(mvm, "Draining TDLS sta %d\n", 1061e705c121SKalle Valo mvm_sta->sta_id); 1062e705c121SKalle Valo } 1063e705c121SKalle Valo 1064e705c121SKalle Valo ret = iwl_mvm_drain_sta(mvm, mvm_sta, true); 1065e705c121SKalle Valo } else { 1066e705c121SKalle Valo spin_unlock_bh(&mvm_sta->lock); 1067e705c121SKalle Valo 1068e705c121SKalle Valo if (sta->tdls) 1069e705c121SKalle Valo iwl_mvm_tdls_sta_deinit(mvm, sta); 1070e705c121SKalle Valo 1071e705c121SKalle Valo ret = iwl_mvm_rm_sta_common(mvm, mvm_sta->sta_id); 1072e705c121SKalle Valo RCU_INIT_POINTER(mvm->fw_id_to_mac_id[mvm_sta->sta_id], NULL); 1073e705c121SKalle Valo } 1074e705c121SKalle Valo 1075e705c121SKalle Valo return ret; 1076e705c121SKalle Valo } 1077e705c121SKalle Valo 1078e705c121SKalle Valo int iwl_mvm_rm_sta_id(struct iwl_mvm *mvm, 1079e705c121SKalle Valo struct ieee80211_vif *vif, 1080e705c121SKalle Valo u8 sta_id) 1081e705c121SKalle Valo { 1082e705c121SKalle Valo int ret = iwl_mvm_rm_sta_common(mvm, sta_id); 1083e705c121SKalle Valo 1084e705c121SKalle Valo lockdep_assert_held(&mvm->mutex); 1085e705c121SKalle Valo 1086e705c121SKalle Valo RCU_INIT_POINTER(mvm->fw_id_to_mac_id[sta_id], NULL); 1087e705c121SKalle Valo return ret; 1088e705c121SKalle Valo } 1089e705c121SKalle Valo 10900e39eb03SChaya Rachel Ivgi int iwl_mvm_allocate_int_sta(struct iwl_mvm *mvm, 1091e705c121SKalle Valo struct iwl_mvm_int_sta *sta, 1092e705c121SKalle Valo u32 qmask, enum nl80211_iftype iftype) 1093e705c121SKalle Valo { 1094e705c121SKalle Valo if (!test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status)) { 1095e705c121SKalle Valo sta->sta_id = iwl_mvm_find_free_sta_id(mvm, iftype); 1096e705c121SKalle Valo if (WARN_ON_ONCE(sta->sta_id == IWL_MVM_STATION_COUNT)) 1097e705c121SKalle Valo return -ENOSPC; 1098e705c121SKalle Valo } 1099e705c121SKalle Valo 1100e705c121SKalle Valo sta->tfd_queue_msk = qmask; 1101e705c121SKalle Valo 1102e705c121SKalle Valo /* put a non-NULL value so iterating over the stations won't stop */ 1103e705c121SKalle Valo rcu_assign_pointer(mvm->fw_id_to_mac_id[sta->sta_id], ERR_PTR(-EINVAL)); 1104e705c121SKalle Valo return 0; 1105e705c121SKalle Valo } 1106e705c121SKalle Valo 1107e705c121SKalle Valo static void iwl_mvm_dealloc_int_sta(struct iwl_mvm *mvm, 1108e705c121SKalle Valo struct iwl_mvm_int_sta *sta) 1109e705c121SKalle Valo { 1110e705c121SKalle Valo RCU_INIT_POINTER(mvm->fw_id_to_mac_id[sta->sta_id], NULL); 1111e705c121SKalle Valo memset(sta, 0, sizeof(struct iwl_mvm_int_sta)); 1112e705c121SKalle Valo sta->sta_id = IWL_MVM_STATION_COUNT; 1113e705c121SKalle Valo } 1114e705c121SKalle Valo 1115e705c121SKalle Valo static int iwl_mvm_add_int_sta_common(struct iwl_mvm *mvm, 1116e705c121SKalle Valo struct iwl_mvm_int_sta *sta, 1117e705c121SKalle Valo const u8 *addr, 1118e705c121SKalle Valo u16 mac_id, u16 color) 1119e705c121SKalle Valo { 1120e705c121SKalle Valo struct iwl_mvm_add_sta_cmd cmd; 1121e705c121SKalle Valo int ret; 1122e705c121SKalle Valo u32 status; 1123e705c121SKalle Valo 1124e705c121SKalle Valo lockdep_assert_held(&mvm->mutex); 1125e705c121SKalle Valo 1126e705c121SKalle Valo memset(&cmd, 0, sizeof(cmd)); 1127e705c121SKalle Valo cmd.sta_id = sta->sta_id; 1128e705c121SKalle Valo cmd.mac_id_n_color = cpu_to_le32(FW_CMD_ID_AND_COLOR(mac_id, 1129e705c121SKalle Valo color)); 1130e705c121SKalle Valo 1131e705c121SKalle Valo cmd.tfd_queue_msk = cpu_to_le32(sta->tfd_queue_msk); 1132cf0cda19SLiad Kaufman cmd.tid_disable_tx = cpu_to_le16(0xffff); 1133e705c121SKalle Valo 1134e705c121SKalle Valo if (addr) 1135e705c121SKalle Valo memcpy(cmd.addr, addr, ETH_ALEN); 1136e705c121SKalle Valo 1137854c5705SSara Sharon ret = iwl_mvm_send_cmd_pdu_status(mvm, ADD_STA, 1138854c5705SSara Sharon iwl_mvm_add_sta_cmd_size(mvm), 1139e705c121SKalle Valo &cmd, &status); 1140e705c121SKalle Valo if (ret) 1141e705c121SKalle Valo return ret; 1142e705c121SKalle Valo 1143837c4da9SSara Sharon switch (status & IWL_ADD_STA_STATUS_MASK) { 1144e705c121SKalle Valo case ADD_STA_SUCCESS: 1145e705c121SKalle Valo IWL_DEBUG_INFO(mvm, "Internal station added.\n"); 1146e705c121SKalle Valo return 0; 1147e705c121SKalle Valo default: 1148e705c121SKalle Valo ret = -EIO; 1149e705c121SKalle Valo IWL_ERR(mvm, "Add internal station failed, status=0x%x\n", 1150e705c121SKalle Valo status); 1151e705c121SKalle Valo break; 1152e705c121SKalle Valo } 1153e705c121SKalle Valo return ret; 1154e705c121SKalle Valo } 1155e705c121SKalle Valo 1156e705c121SKalle Valo int iwl_mvm_add_aux_sta(struct iwl_mvm *mvm) 1157e705c121SKalle Valo { 1158e705c121SKalle Valo unsigned int wdg_timeout = iwlmvm_mod_params.tfd_q_hang_detect ? 1159e705c121SKalle Valo mvm->cfg->base_params->wd_timeout : 1160e705c121SKalle Valo IWL_WATCHDOG_DISABLED; 1161e705c121SKalle Valo int ret; 1162e705c121SKalle Valo 1163e705c121SKalle Valo lockdep_assert_held(&mvm->mutex); 1164e705c121SKalle Valo 1165e705c121SKalle Valo /* Map Aux queue to fifo - needs to happen before adding Aux station */ 1166e705c121SKalle Valo iwl_mvm_enable_ac_txq(mvm, mvm->aux_queue, mvm->aux_queue, 1167e705c121SKalle Valo IWL_MVM_TX_FIFO_MCAST, 0, wdg_timeout); 1168e705c121SKalle Valo 1169e705c121SKalle Valo /* Allocate aux station and assign to it the aux queue */ 1170e705c121SKalle Valo ret = iwl_mvm_allocate_int_sta(mvm, &mvm->aux_sta, BIT(mvm->aux_queue), 1171e705c121SKalle Valo NL80211_IFTYPE_UNSPECIFIED); 1172e705c121SKalle Valo if (ret) 1173e705c121SKalle Valo return ret; 1174e705c121SKalle Valo 1175e705c121SKalle Valo ret = iwl_mvm_add_int_sta_common(mvm, &mvm->aux_sta, NULL, 1176e705c121SKalle Valo MAC_INDEX_AUX, 0); 1177e705c121SKalle Valo 1178e705c121SKalle Valo if (ret) 1179e705c121SKalle Valo iwl_mvm_dealloc_int_sta(mvm, &mvm->aux_sta); 1180e705c121SKalle Valo return ret; 1181e705c121SKalle Valo } 1182e705c121SKalle Valo 11830e39eb03SChaya Rachel Ivgi int iwl_mvm_add_snif_sta(struct iwl_mvm *mvm, struct ieee80211_vif *vif) 11840e39eb03SChaya Rachel Ivgi { 11850e39eb03SChaya Rachel Ivgi struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 11860e39eb03SChaya Rachel Ivgi 11870e39eb03SChaya Rachel Ivgi lockdep_assert_held(&mvm->mutex); 11880e39eb03SChaya Rachel Ivgi return iwl_mvm_add_int_sta_common(mvm, &mvm->snif_sta, vif->addr, 11890e39eb03SChaya Rachel Ivgi mvmvif->id, 0); 11900e39eb03SChaya Rachel Ivgi } 11910e39eb03SChaya Rachel Ivgi 11920e39eb03SChaya Rachel Ivgi int iwl_mvm_rm_snif_sta(struct iwl_mvm *mvm, struct ieee80211_vif *vif) 11930e39eb03SChaya Rachel Ivgi { 11940e39eb03SChaya Rachel Ivgi int ret; 11950e39eb03SChaya Rachel Ivgi 11960e39eb03SChaya Rachel Ivgi lockdep_assert_held(&mvm->mutex); 11970e39eb03SChaya Rachel Ivgi 11980e39eb03SChaya Rachel Ivgi ret = iwl_mvm_rm_sta_common(mvm, mvm->snif_sta.sta_id); 11990e39eb03SChaya Rachel Ivgi if (ret) 12000e39eb03SChaya Rachel Ivgi IWL_WARN(mvm, "Failed sending remove station\n"); 12010e39eb03SChaya Rachel Ivgi 12020e39eb03SChaya Rachel Ivgi return ret; 12030e39eb03SChaya Rachel Ivgi } 12040e39eb03SChaya Rachel Ivgi 12050e39eb03SChaya Rachel Ivgi void iwl_mvm_dealloc_snif_sta(struct iwl_mvm *mvm) 12060e39eb03SChaya Rachel Ivgi { 12070e39eb03SChaya Rachel Ivgi iwl_mvm_dealloc_int_sta(mvm, &mvm->snif_sta); 12080e39eb03SChaya Rachel Ivgi } 12090e39eb03SChaya Rachel Ivgi 1210e705c121SKalle Valo void iwl_mvm_del_aux_sta(struct iwl_mvm *mvm) 1211e705c121SKalle Valo { 1212e705c121SKalle Valo lockdep_assert_held(&mvm->mutex); 1213e705c121SKalle Valo 1214e705c121SKalle Valo iwl_mvm_dealloc_int_sta(mvm, &mvm->aux_sta); 1215e705c121SKalle Valo } 1216e705c121SKalle Valo 1217e705c121SKalle Valo /* 1218e705c121SKalle Valo * Send the add station command for the vif's broadcast station. 1219e705c121SKalle Valo * Assumes that the station was already allocated. 1220e705c121SKalle Valo * 1221e705c121SKalle Valo * @mvm: the mvm component 1222e705c121SKalle Valo * @vif: the interface to which the broadcast station is added 1223e705c121SKalle Valo * @bsta: the broadcast station to add. 1224e705c121SKalle Valo */ 1225e705c121SKalle Valo int iwl_mvm_send_add_bcast_sta(struct iwl_mvm *mvm, struct ieee80211_vif *vif) 1226e705c121SKalle Valo { 1227e705c121SKalle Valo struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 1228e705c121SKalle Valo struct iwl_mvm_int_sta *bsta = &mvmvif->bcast_sta; 1229e705c121SKalle Valo static const u8 _baddr[] = {0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF}; 1230e705c121SKalle Valo const u8 *baddr = _baddr; 1231e705c121SKalle Valo 1232e705c121SKalle Valo lockdep_assert_held(&mvm->mutex); 1233e705c121SKalle Valo 1234de24f638SLiad Kaufman if (iwl_mvm_is_dqa_supported(mvm)) { 1235de24f638SLiad Kaufman struct iwl_trans_txq_scd_cfg cfg = { 1236de24f638SLiad Kaufman .fifo = IWL_MVM_TX_FIFO_VO, 1237de24f638SLiad Kaufman .sta_id = mvmvif->bcast_sta.sta_id, 1238de24f638SLiad Kaufman .tid = IWL_MAX_TID_COUNT, 1239de24f638SLiad Kaufman .aggregate = false, 1240de24f638SLiad Kaufman .frame_limit = IWL_FRAME_LIMIT, 1241de24f638SLiad Kaufman }; 1242de24f638SLiad Kaufman unsigned int wdg_timeout = 1243de24f638SLiad Kaufman iwl_mvm_get_wd_timeout(mvm, vif, false, false); 1244de24f638SLiad Kaufman int queue; 1245de24f638SLiad Kaufman 1246de24f638SLiad Kaufman if ((vif->type == NL80211_IFTYPE_AP) && 1247de24f638SLiad Kaufman (mvmvif->bcast_sta.tfd_queue_msk & 1248de24f638SLiad Kaufman BIT(IWL_MVM_DQA_AP_PROBE_RESP_QUEUE))) 1249de24f638SLiad Kaufman queue = IWL_MVM_DQA_AP_PROBE_RESP_QUEUE; 12504c965139SLiad Kaufman else if ((vif->type == NL80211_IFTYPE_P2P_DEVICE) && 12514c965139SLiad Kaufman (mvmvif->bcast_sta.tfd_queue_msk & 12524c965139SLiad Kaufman BIT(IWL_MVM_DQA_P2P_DEVICE_QUEUE))) 12534c965139SLiad Kaufman queue = IWL_MVM_DQA_P2P_DEVICE_QUEUE; 1254de24f638SLiad Kaufman else if (WARN(1, "Missed required TXQ for adding bcast STA\n")) 1255de24f638SLiad Kaufman return -EINVAL; 1256de24f638SLiad Kaufman 1257de24f638SLiad Kaufman iwl_mvm_enable_txq(mvm, queue, vif->hw_queue[0], 0, &cfg, 1258de24f638SLiad Kaufman wdg_timeout); 1259de24f638SLiad Kaufman } 1260de24f638SLiad Kaufman 1261e705c121SKalle Valo if (vif->type == NL80211_IFTYPE_ADHOC) 1262e705c121SKalle Valo baddr = vif->bss_conf.bssid; 1263e705c121SKalle Valo 1264e705c121SKalle Valo if (WARN_ON_ONCE(bsta->sta_id == IWL_MVM_STATION_COUNT)) 1265e705c121SKalle Valo return -ENOSPC; 1266e705c121SKalle Valo 1267e705c121SKalle Valo return iwl_mvm_add_int_sta_common(mvm, bsta, baddr, 1268e705c121SKalle Valo mvmvif->id, mvmvif->color); 1269e705c121SKalle Valo } 1270e705c121SKalle Valo 1271e705c121SKalle Valo /* Send the FW a request to remove the station from it's internal data 1272e705c121SKalle Valo * structures, but DO NOT remove the entry from the local data structures. */ 1273e705c121SKalle Valo int iwl_mvm_send_rm_bcast_sta(struct iwl_mvm *mvm, struct ieee80211_vif *vif) 1274e705c121SKalle Valo { 1275e705c121SKalle Valo struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 1276e705c121SKalle Valo int ret; 1277e705c121SKalle Valo 1278e705c121SKalle Valo lockdep_assert_held(&mvm->mutex); 1279e705c121SKalle Valo 1280e705c121SKalle Valo ret = iwl_mvm_rm_sta_common(mvm, mvmvif->bcast_sta.sta_id); 1281e705c121SKalle Valo if (ret) 1282e705c121SKalle Valo IWL_WARN(mvm, "Failed sending remove station\n"); 1283e705c121SKalle Valo return ret; 1284e705c121SKalle Valo } 1285e705c121SKalle Valo 1286e705c121SKalle Valo int iwl_mvm_alloc_bcast_sta(struct iwl_mvm *mvm, struct ieee80211_vif *vif) 1287e705c121SKalle Valo { 1288e705c121SKalle Valo struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 1289de24f638SLiad Kaufman u32 qmask = 0; 1290e705c121SKalle Valo 1291e705c121SKalle Valo lockdep_assert_held(&mvm->mutex); 1292e705c121SKalle Valo 1293de24f638SLiad Kaufman if (!iwl_mvm_is_dqa_supported(mvm)) 1294e705c121SKalle Valo qmask = iwl_mvm_mac_get_queues_mask(vif); 1295e705c121SKalle Valo 1296de24f638SLiad Kaufman if (vif->type == NL80211_IFTYPE_AP) { 1297e705c121SKalle Valo /* 1298e705c121SKalle Valo * The firmware defines the TFD queue mask to only be relevant 1299e705c121SKalle Valo * for *unicast* queues, so the multicast (CAB) queue shouldn't 1300e705c121SKalle Valo * be included. 1301e705c121SKalle Valo */ 1302e705c121SKalle Valo qmask &= ~BIT(vif->cab_queue); 1303e705c121SKalle Valo 1304de24f638SLiad Kaufman if (iwl_mvm_is_dqa_supported(mvm)) 1305de24f638SLiad Kaufman qmask |= BIT(IWL_MVM_DQA_AP_PROBE_RESP_QUEUE); 13064c965139SLiad Kaufman } else if (iwl_mvm_is_dqa_supported(mvm) && 13074c965139SLiad Kaufman vif->type == NL80211_IFTYPE_P2P_DEVICE) { 13084c965139SLiad Kaufman qmask |= BIT(IWL_MVM_DQA_P2P_DEVICE_QUEUE); 1309de24f638SLiad Kaufman } 1310de24f638SLiad Kaufman 1311e705c121SKalle Valo return iwl_mvm_allocate_int_sta(mvm, &mvmvif->bcast_sta, qmask, 1312e705c121SKalle Valo ieee80211_vif_type_p2p(vif)); 1313e705c121SKalle Valo } 1314e705c121SKalle Valo 1315e705c121SKalle Valo /* Allocate a new station entry for the broadcast station to the given vif, 1316e705c121SKalle Valo * and send it to the FW. 1317e705c121SKalle Valo * Note that each P2P mac should have its own broadcast station. 1318e705c121SKalle Valo * 1319e705c121SKalle Valo * @mvm: the mvm component 1320e705c121SKalle Valo * @vif: the interface to which the broadcast station is added 1321e705c121SKalle Valo * @bsta: the broadcast station to add. */ 1322e705c121SKalle Valo int iwl_mvm_add_bcast_sta(struct iwl_mvm *mvm, struct ieee80211_vif *vif) 1323e705c121SKalle Valo { 1324e705c121SKalle Valo struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 1325e705c121SKalle Valo struct iwl_mvm_int_sta *bsta = &mvmvif->bcast_sta; 1326e705c121SKalle Valo int ret; 1327e705c121SKalle Valo 1328e705c121SKalle Valo lockdep_assert_held(&mvm->mutex); 1329e705c121SKalle Valo 1330e705c121SKalle Valo ret = iwl_mvm_alloc_bcast_sta(mvm, vif); 1331e705c121SKalle Valo if (ret) 1332e705c121SKalle Valo return ret; 1333e705c121SKalle Valo 1334e705c121SKalle Valo ret = iwl_mvm_send_add_bcast_sta(mvm, vif); 1335e705c121SKalle Valo 1336e705c121SKalle Valo if (ret) 1337e705c121SKalle Valo iwl_mvm_dealloc_int_sta(mvm, bsta); 1338e705c121SKalle Valo 1339e705c121SKalle Valo return ret; 1340e705c121SKalle Valo } 1341e705c121SKalle Valo 1342e705c121SKalle Valo void iwl_mvm_dealloc_bcast_sta(struct iwl_mvm *mvm, struct ieee80211_vif *vif) 1343e705c121SKalle Valo { 1344e705c121SKalle Valo struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 1345e705c121SKalle Valo 1346e705c121SKalle Valo iwl_mvm_dealloc_int_sta(mvm, &mvmvif->bcast_sta); 1347e705c121SKalle Valo } 1348e705c121SKalle Valo 1349e705c121SKalle Valo /* 1350e705c121SKalle Valo * Send the FW a request to remove the station from it's internal data 1351e705c121SKalle Valo * structures, and in addition remove it from the local data structure. 1352e705c121SKalle Valo */ 1353e705c121SKalle Valo int iwl_mvm_rm_bcast_sta(struct iwl_mvm *mvm, struct ieee80211_vif *vif) 1354e705c121SKalle Valo { 1355e705c121SKalle Valo int ret; 1356e705c121SKalle Valo 1357e705c121SKalle Valo lockdep_assert_held(&mvm->mutex); 1358e705c121SKalle Valo 1359e705c121SKalle Valo ret = iwl_mvm_send_rm_bcast_sta(mvm, vif); 1360e705c121SKalle Valo 1361e705c121SKalle Valo iwl_mvm_dealloc_bcast_sta(mvm, vif); 1362e705c121SKalle Valo 1363e705c121SKalle Valo return ret; 1364e705c121SKalle Valo } 1365e705c121SKalle Valo 1366e705c121SKalle Valo #define IWL_MAX_RX_BA_SESSIONS 16 1367e705c121SKalle Valo 1368b915c101SSara Sharon static void iwl_mvm_sync_rxq_del_ba(struct iwl_mvm *mvm, u8 baid) 136910b2b201SSara Sharon { 1370b915c101SSara Sharon struct iwl_mvm_delba_notif notif = { 1371b915c101SSara Sharon .metadata.type = IWL_MVM_RXQ_NOTIF_DEL_BA, 1372b915c101SSara Sharon .metadata.sync = 1, 1373b915c101SSara Sharon .delba.baid = baid, 1374b915c101SSara Sharon }; 1375b915c101SSara Sharon iwl_mvm_sync_rx_queues_internal(mvm, (void *)¬if, sizeof(notif)); 137610b2b201SSara Sharon }; 137710b2b201SSara Sharon 1378b915c101SSara Sharon static void iwl_mvm_free_reorder(struct iwl_mvm *mvm, 1379b915c101SSara Sharon struct iwl_mvm_baid_data *data) 1380b915c101SSara Sharon { 1381b915c101SSara Sharon int i; 1382b915c101SSara Sharon 1383b915c101SSara Sharon iwl_mvm_sync_rxq_del_ba(mvm, data->baid); 1384b915c101SSara Sharon 1385b915c101SSara Sharon for (i = 0; i < mvm->trans->num_rx_queues; i++) { 1386b915c101SSara Sharon int j; 1387b915c101SSara Sharon struct iwl_mvm_reorder_buffer *reorder_buf = 1388b915c101SSara Sharon &data->reorder_buf[i]; 1389b915c101SSara Sharon 13900690405fSSara Sharon spin_lock_bh(&reorder_buf->lock); 13910690405fSSara Sharon if (likely(!reorder_buf->num_stored)) { 13920690405fSSara Sharon spin_unlock_bh(&reorder_buf->lock); 1393b915c101SSara Sharon continue; 13940690405fSSara Sharon } 1395b915c101SSara Sharon 1396b915c101SSara Sharon /* 1397b915c101SSara Sharon * This shouldn't happen in regular DELBA since the internal 1398b915c101SSara Sharon * delBA notification should trigger a release of all frames in 1399b915c101SSara Sharon * the reorder buffer. 1400b915c101SSara Sharon */ 1401b915c101SSara Sharon WARN_ON(1); 1402b915c101SSara Sharon 1403b915c101SSara Sharon for (j = 0; j < reorder_buf->buf_size; j++) 1404b915c101SSara Sharon __skb_queue_purge(&reorder_buf->entries[j]); 14050690405fSSara Sharon /* 14060690405fSSara Sharon * Prevent timer re-arm. This prevents a very far fetched case 14070690405fSSara Sharon * where we timed out on the notification. There may be prior 14080690405fSSara Sharon * RX frames pending in the RX queue before the notification 14090690405fSSara Sharon * that might get processed between now and the actual deletion 14100690405fSSara Sharon * and we would re-arm the timer although we are deleting the 14110690405fSSara Sharon * reorder buffer. 14120690405fSSara Sharon */ 14130690405fSSara Sharon reorder_buf->removed = true; 14140690405fSSara Sharon spin_unlock_bh(&reorder_buf->lock); 14150690405fSSara Sharon del_timer_sync(&reorder_buf->reorder_timer); 1416b915c101SSara Sharon } 1417b915c101SSara Sharon } 1418b915c101SSara Sharon 1419b915c101SSara Sharon static void iwl_mvm_init_reorder_buffer(struct iwl_mvm *mvm, 1420b915c101SSara Sharon u32 sta_id, 1421b915c101SSara Sharon struct iwl_mvm_baid_data *data, 1422b915c101SSara Sharon u16 ssn, u8 buf_size) 1423b915c101SSara Sharon { 1424b915c101SSara Sharon int i; 1425b915c101SSara Sharon 1426b915c101SSara Sharon for (i = 0; i < mvm->trans->num_rx_queues; i++) { 1427b915c101SSara Sharon struct iwl_mvm_reorder_buffer *reorder_buf = 1428b915c101SSara Sharon &data->reorder_buf[i]; 1429b915c101SSara Sharon int j; 1430b915c101SSara Sharon 1431b915c101SSara Sharon reorder_buf->num_stored = 0; 1432b915c101SSara Sharon reorder_buf->head_sn = ssn; 1433b915c101SSara Sharon reorder_buf->buf_size = buf_size; 14340690405fSSara Sharon /* rx reorder timer */ 14350690405fSSara Sharon reorder_buf->reorder_timer.function = 14360690405fSSara Sharon iwl_mvm_reorder_timer_expired; 14370690405fSSara Sharon reorder_buf->reorder_timer.data = (unsigned long)reorder_buf; 14380690405fSSara Sharon init_timer(&reorder_buf->reorder_timer); 14390690405fSSara Sharon spin_lock_init(&reorder_buf->lock); 14400690405fSSara Sharon reorder_buf->mvm = mvm; 1441b915c101SSara Sharon reorder_buf->queue = i; 1442b915c101SSara Sharon reorder_buf->sta_id = sta_id; 1443b915c101SSara Sharon for (j = 0; j < reorder_buf->buf_size; j++) 1444b915c101SSara Sharon __skb_queue_head_init(&reorder_buf->entries[j]); 1445b915c101SSara Sharon } 144610b2b201SSara Sharon } 144710b2b201SSara Sharon 1448e705c121SKalle Valo int iwl_mvm_sta_rx_agg(struct iwl_mvm *mvm, struct ieee80211_sta *sta, 144910b2b201SSara Sharon int tid, u16 ssn, bool start, u8 buf_size, u16 timeout) 1450e705c121SKalle Valo { 1451e705c121SKalle Valo struct iwl_mvm_sta *mvm_sta = iwl_mvm_sta_from_mac80211(sta); 1452e705c121SKalle Valo struct iwl_mvm_add_sta_cmd cmd = {}; 145310b2b201SSara Sharon struct iwl_mvm_baid_data *baid_data = NULL; 1454e705c121SKalle Valo int ret; 1455e705c121SKalle Valo u32 status; 1456e705c121SKalle Valo 1457e705c121SKalle Valo lockdep_assert_held(&mvm->mutex); 1458e705c121SKalle Valo 1459e705c121SKalle Valo if (start && mvm->rx_ba_sessions >= IWL_MAX_RX_BA_SESSIONS) { 1460e705c121SKalle Valo IWL_WARN(mvm, "Not enough RX BA SESSIONS\n"); 1461e705c121SKalle Valo return -ENOSPC; 1462e705c121SKalle Valo } 1463e705c121SKalle Valo 146410b2b201SSara Sharon if (iwl_mvm_has_new_rx_api(mvm) && start) { 146510b2b201SSara Sharon /* 146610b2b201SSara Sharon * Allocate here so if allocation fails we can bail out early 146710b2b201SSara Sharon * before starting the BA session in the firmware 146810b2b201SSara Sharon */ 1469b915c101SSara Sharon baid_data = kzalloc(sizeof(*baid_data) + 1470b915c101SSara Sharon mvm->trans->num_rx_queues * 1471b915c101SSara Sharon sizeof(baid_data->reorder_buf[0]), 1472b915c101SSara Sharon GFP_KERNEL); 147310b2b201SSara Sharon if (!baid_data) 147410b2b201SSara Sharon return -ENOMEM; 147510b2b201SSara Sharon } 147610b2b201SSara Sharon 1477e705c121SKalle Valo cmd.mac_id_n_color = cpu_to_le32(mvm_sta->mac_id_n_color); 1478e705c121SKalle Valo cmd.sta_id = mvm_sta->sta_id; 1479e705c121SKalle Valo cmd.add_modify = STA_MODE_MODIFY; 1480e705c121SKalle Valo if (start) { 1481e705c121SKalle Valo cmd.add_immediate_ba_tid = (u8) tid; 1482e705c121SKalle Valo cmd.add_immediate_ba_ssn = cpu_to_le16(ssn); 1483854c5705SSara Sharon cmd.rx_ba_window = cpu_to_le16((u16)buf_size); 1484e705c121SKalle Valo } else { 1485e705c121SKalle Valo cmd.remove_immediate_ba_tid = (u8) tid; 1486e705c121SKalle Valo } 1487e705c121SKalle Valo cmd.modify_mask = start ? STA_MODIFY_ADD_BA_TID : 1488e705c121SKalle Valo STA_MODIFY_REMOVE_BA_TID; 1489e705c121SKalle Valo 1490e705c121SKalle Valo status = ADD_STA_SUCCESS; 1491854c5705SSara Sharon ret = iwl_mvm_send_cmd_pdu_status(mvm, ADD_STA, 1492854c5705SSara Sharon iwl_mvm_add_sta_cmd_size(mvm), 1493e705c121SKalle Valo &cmd, &status); 1494e705c121SKalle Valo if (ret) 149510b2b201SSara Sharon goto out_free; 1496e705c121SKalle Valo 1497837c4da9SSara Sharon switch (status & IWL_ADD_STA_STATUS_MASK) { 1498e705c121SKalle Valo case ADD_STA_SUCCESS: 1499e705c121SKalle Valo IWL_DEBUG_INFO(mvm, "RX BA Session %sed in fw\n", 1500e705c121SKalle Valo start ? "start" : "stopp"); 1501e705c121SKalle Valo break; 1502e705c121SKalle Valo case ADD_STA_IMMEDIATE_BA_FAILURE: 1503e705c121SKalle Valo IWL_WARN(mvm, "RX BA Session refused by fw\n"); 1504e705c121SKalle Valo ret = -ENOSPC; 1505e705c121SKalle Valo break; 1506e705c121SKalle Valo default: 1507e705c121SKalle Valo ret = -EIO; 1508e705c121SKalle Valo IWL_ERR(mvm, "RX BA Session failed %sing, status 0x%x\n", 1509e705c121SKalle Valo start ? "start" : "stopp", status); 1510e705c121SKalle Valo break; 1511e705c121SKalle Valo } 1512e705c121SKalle Valo 151310b2b201SSara Sharon if (ret) 151410b2b201SSara Sharon goto out_free; 151510b2b201SSara Sharon 151610b2b201SSara Sharon if (start) { 151710b2b201SSara Sharon u8 baid; 151810b2b201SSara Sharon 1519e705c121SKalle Valo mvm->rx_ba_sessions++; 152010b2b201SSara Sharon 152110b2b201SSara Sharon if (!iwl_mvm_has_new_rx_api(mvm)) 152210b2b201SSara Sharon return 0; 152310b2b201SSara Sharon 152410b2b201SSara Sharon if (WARN_ON(!(status & IWL_ADD_STA_BAID_VALID_MASK))) { 152510b2b201SSara Sharon ret = -EINVAL; 152610b2b201SSara Sharon goto out_free; 152710b2b201SSara Sharon } 152810b2b201SSara Sharon baid = (u8)((status & IWL_ADD_STA_BAID_MASK) >> 152910b2b201SSara Sharon IWL_ADD_STA_BAID_SHIFT); 153010b2b201SSara Sharon baid_data->baid = baid; 153110b2b201SSara Sharon baid_data->timeout = timeout; 153210b2b201SSara Sharon baid_data->last_rx = jiffies; 153310b2b201SSara Sharon init_timer(&baid_data->session_timer); 153410b2b201SSara Sharon baid_data->session_timer.function = 153510b2b201SSara Sharon iwl_mvm_rx_agg_session_expired; 153610b2b201SSara Sharon baid_data->session_timer.data = 153710b2b201SSara Sharon (unsigned long)&mvm->baid_map[baid]; 153810b2b201SSara Sharon baid_data->mvm = mvm; 153910b2b201SSara Sharon baid_data->tid = tid; 154010b2b201SSara Sharon baid_data->sta_id = mvm_sta->sta_id; 154110b2b201SSara Sharon 154210b2b201SSara Sharon mvm_sta->tid_to_baid[tid] = baid; 154310b2b201SSara Sharon if (timeout) 154410b2b201SSara Sharon mod_timer(&baid_data->session_timer, 154510b2b201SSara Sharon TU_TO_EXP_TIME(timeout * 2)); 154610b2b201SSara Sharon 1547b915c101SSara Sharon iwl_mvm_init_reorder_buffer(mvm, mvm_sta->sta_id, 1548b915c101SSara Sharon baid_data, ssn, buf_size); 154910b2b201SSara Sharon /* 155010b2b201SSara Sharon * protect the BA data with RCU to cover a case where our 155110b2b201SSara Sharon * internal RX sync mechanism will timeout (not that it's 155210b2b201SSara Sharon * supposed to happen) and we will free the session data while 155310b2b201SSara Sharon * RX is being processed in parallel 155410b2b201SSara Sharon */ 155510b2b201SSara Sharon WARN_ON(rcu_access_pointer(mvm->baid_map[baid])); 155610b2b201SSara Sharon rcu_assign_pointer(mvm->baid_map[baid], baid_data); 155710b2b201SSara Sharon } else if (mvm->rx_ba_sessions > 0) { 155810b2b201SSara Sharon u8 baid = mvm_sta->tid_to_baid[tid]; 155910b2b201SSara Sharon 1560e705c121SKalle Valo /* check that restart flow didn't zero the counter */ 1561e705c121SKalle Valo mvm->rx_ba_sessions--; 156210b2b201SSara Sharon if (!iwl_mvm_has_new_rx_api(mvm)) 156310b2b201SSara Sharon return 0; 1564e705c121SKalle Valo 156510b2b201SSara Sharon if (WARN_ON(baid == IWL_RX_REORDER_DATA_INVALID_BAID)) 156610b2b201SSara Sharon return -EINVAL; 156710b2b201SSara Sharon 156810b2b201SSara Sharon baid_data = rcu_access_pointer(mvm->baid_map[baid]); 156910b2b201SSara Sharon if (WARN_ON(!baid_data)) 157010b2b201SSara Sharon return -EINVAL; 157110b2b201SSara Sharon 157210b2b201SSara Sharon /* synchronize all rx queues so we can safely delete */ 1573b915c101SSara Sharon iwl_mvm_free_reorder(mvm, baid_data); 157410b2b201SSara Sharon del_timer_sync(&baid_data->session_timer); 157510b2b201SSara Sharon RCU_INIT_POINTER(mvm->baid_map[baid], NULL); 157610b2b201SSara Sharon kfree_rcu(baid_data, rcu_head); 157710b2b201SSara Sharon } 157810b2b201SSara Sharon return 0; 157910b2b201SSara Sharon 158010b2b201SSara Sharon out_free: 158110b2b201SSara Sharon kfree(baid_data); 1582e705c121SKalle Valo return ret; 1583e705c121SKalle Valo } 1584e705c121SKalle Valo 15859794c64fSLiad Kaufman int iwl_mvm_sta_tx_agg(struct iwl_mvm *mvm, struct ieee80211_sta *sta, 1586e705c121SKalle Valo int tid, u8 queue, bool start) 1587e705c121SKalle Valo { 1588e705c121SKalle Valo struct iwl_mvm_sta *mvm_sta = iwl_mvm_sta_from_mac80211(sta); 1589e705c121SKalle Valo struct iwl_mvm_add_sta_cmd cmd = {}; 1590e705c121SKalle Valo int ret; 1591e705c121SKalle Valo u32 status; 1592e705c121SKalle Valo 1593e705c121SKalle Valo lockdep_assert_held(&mvm->mutex); 1594e705c121SKalle Valo 1595e705c121SKalle Valo if (start) { 1596e705c121SKalle Valo mvm_sta->tfd_queue_msk |= BIT(queue); 1597e705c121SKalle Valo mvm_sta->tid_disable_agg &= ~BIT(tid); 1598e705c121SKalle Valo } else { 1599cf961e16SLiad Kaufman /* In DQA-mode the queue isn't removed on agg termination */ 1600cf961e16SLiad Kaufman if (!iwl_mvm_is_dqa_supported(mvm)) 1601e705c121SKalle Valo mvm_sta->tfd_queue_msk &= ~BIT(queue); 1602e705c121SKalle Valo mvm_sta->tid_disable_agg |= BIT(tid); 1603e705c121SKalle Valo } 1604e705c121SKalle Valo 1605e705c121SKalle Valo cmd.mac_id_n_color = cpu_to_le32(mvm_sta->mac_id_n_color); 1606e705c121SKalle Valo cmd.sta_id = mvm_sta->sta_id; 1607e705c121SKalle Valo cmd.add_modify = STA_MODE_MODIFY; 1608e705c121SKalle Valo cmd.modify_mask = STA_MODIFY_QUEUES | STA_MODIFY_TID_DISABLE_TX; 1609e705c121SKalle Valo cmd.tfd_queue_msk = cpu_to_le32(mvm_sta->tfd_queue_msk); 1610e705c121SKalle Valo cmd.tid_disable_tx = cpu_to_le16(mvm_sta->tid_disable_agg); 1611e705c121SKalle Valo 1612e705c121SKalle Valo status = ADD_STA_SUCCESS; 1613854c5705SSara Sharon ret = iwl_mvm_send_cmd_pdu_status(mvm, ADD_STA, 1614854c5705SSara Sharon iwl_mvm_add_sta_cmd_size(mvm), 1615e705c121SKalle Valo &cmd, &status); 1616e705c121SKalle Valo if (ret) 1617e705c121SKalle Valo return ret; 1618e705c121SKalle Valo 1619837c4da9SSara Sharon switch (status & IWL_ADD_STA_STATUS_MASK) { 1620e705c121SKalle Valo case ADD_STA_SUCCESS: 1621e705c121SKalle Valo break; 1622e705c121SKalle Valo default: 1623e705c121SKalle Valo ret = -EIO; 1624e705c121SKalle Valo IWL_ERR(mvm, "TX BA Session failed %sing, status 0x%x\n", 1625e705c121SKalle Valo start ? "start" : "stopp", status); 1626e705c121SKalle Valo break; 1627e705c121SKalle Valo } 1628e705c121SKalle Valo 1629e705c121SKalle Valo return ret; 1630e705c121SKalle Valo } 1631e705c121SKalle Valo 1632e705c121SKalle Valo const u8 tid_to_mac80211_ac[] = { 1633e705c121SKalle Valo IEEE80211_AC_BE, 1634e705c121SKalle Valo IEEE80211_AC_BK, 1635e705c121SKalle Valo IEEE80211_AC_BK, 1636e705c121SKalle Valo IEEE80211_AC_BE, 1637e705c121SKalle Valo IEEE80211_AC_VI, 1638e705c121SKalle Valo IEEE80211_AC_VI, 1639e705c121SKalle Valo IEEE80211_AC_VO, 1640e705c121SKalle Valo IEEE80211_AC_VO, 16419794c64fSLiad Kaufman IEEE80211_AC_VO, /* We treat MGMT as TID 8, which is set as AC_VO */ 1642e705c121SKalle Valo }; 1643e705c121SKalle Valo 1644e705c121SKalle Valo static const u8 tid_to_ucode_ac[] = { 1645e705c121SKalle Valo AC_BE, 1646e705c121SKalle Valo AC_BK, 1647e705c121SKalle Valo AC_BK, 1648e705c121SKalle Valo AC_BE, 1649e705c121SKalle Valo AC_VI, 1650e705c121SKalle Valo AC_VI, 1651e705c121SKalle Valo AC_VO, 1652e705c121SKalle Valo AC_VO, 1653e705c121SKalle Valo }; 1654e705c121SKalle Valo 1655e705c121SKalle Valo int iwl_mvm_sta_tx_agg_start(struct iwl_mvm *mvm, struct ieee80211_vif *vif, 1656e705c121SKalle Valo struct ieee80211_sta *sta, u16 tid, u16 *ssn) 1657e705c121SKalle Valo { 1658e705c121SKalle Valo struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta); 1659e705c121SKalle Valo struct iwl_mvm_tid_data *tid_data; 1660e705c121SKalle Valo int txq_id; 1661e705c121SKalle Valo int ret; 1662e705c121SKalle Valo 1663e705c121SKalle Valo if (WARN_ON_ONCE(tid >= IWL_MAX_TID_COUNT)) 1664e705c121SKalle Valo return -EINVAL; 1665e705c121SKalle Valo 1666e705c121SKalle Valo if (mvmsta->tid_data[tid].state != IWL_AGG_OFF) { 1667e705c121SKalle Valo IWL_ERR(mvm, "Start AGG when state is not IWL_AGG_OFF %d!\n", 1668e705c121SKalle Valo mvmsta->tid_data[tid].state); 1669e705c121SKalle Valo return -ENXIO; 1670e705c121SKalle Valo } 1671e705c121SKalle Valo 1672e705c121SKalle Valo lockdep_assert_held(&mvm->mutex); 1673e705c121SKalle Valo 1674e705c121SKalle Valo spin_lock_bh(&mvmsta->lock); 1675e705c121SKalle Valo 1676e705c121SKalle Valo /* possible race condition - we entered D0i3 while starting agg */ 1677e705c121SKalle Valo if (test_bit(IWL_MVM_STATUS_IN_D0I3, &mvm->status)) { 1678e705c121SKalle Valo spin_unlock_bh(&mvmsta->lock); 1679e705c121SKalle Valo IWL_ERR(mvm, "Entered D0i3 while starting Tx agg\n"); 1680e705c121SKalle Valo return -EIO; 1681e705c121SKalle Valo } 1682e705c121SKalle Valo 1683e705c121SKalle Valo spin_lock_bh(&mvm->queue_info_lock); 1684e705c121SKalle Valo 1685cf961e16SLiad Kaufman /* 1686cf961e16SLiad Kaufman * Note the possible cases: 1687cf961e16SLiad Kaufman * 1. In DQA mode with an enabled TXQ - TXQ needs to become agg'ed 1688cf961e16SLiad Kaufman * 2. Non-DQA mode: the TXQ hasn't yet been enabled, so find a free 1689cf961e16SLiad Kaufman * one and mark it as reserved 1690cf961e16SLiad Kaufman * 3. In DQA mode, but no traffic yet on this TID: same treatment as in 1691cf961e16SLiad Kaufman * non-DQA mode, since the TXQ hasn't yet been allocated 1692cf961e16SLiad Kaufman */ 1693cf961e16SLiad Kaufman txq_id = mvmsta->tid_data[tid].txq_id; 1694cf961e16SLiad Kaufman if (!iwl_mvm_is_dqa_supported(mvm) || 1695cf961e16SLiad Kaufman mvm->queue_info[txq_id].status != IWL_MVM_QUEUE_READY) { 16969794c64fSLiad Kaufman txq_id = iwl_mvm_find_free_queue(mvm, mvmsta->sta_id, 16979794c64fSLiad Kaufman mvm->first_agg_queue, 1698e705c121SKalle Valo mvm->last_agg_queue); 1699e705c121SKalle Valo if (txq_id < 0) { 1700e705c121SKalle Valo ret = txq_id; 1701e705c121SKalle Valo spin_unlock_bh(&mvm->queue_info_lock); 1702e705c121SKalle Valo IWL_ERR(mvm, "Failed to allocate agg queue\n"); 1703e705c121SKalle Valo goto release_locks; 1704e705c121SKalle Valo } 1705cf961e16SLiad Kaufman 1706cf961e16SLiad Kaufman /* TXQ hasn't yet been enabled, so mark it only as reserved */ 1707cf961e16SLiad Kaufman mvm->queue_info[txq_id].status = IWL_MVM_QUEUE_RESERVED; 1708cf961e16SLiad Kaufman } 1709e705c121SKalle Valo spin_unlock_bh(&mvm->queue_info_lock); 1710e705c121SKalle Valo 1711cf961e16SLiad Kaufman IWL_DEBUG_TX_QUEUES(mvm, 1712cf961e16SLiad Kaufman "AGG for tid %d will be on queue #%d\n", 1713cf961e16SLiad Kaufman tid, txq_id); 1714cf961e16SLiad Kaufman 1715e705c121SKalle Valo tid_data = &mvmsta->tid_data[tid]; 1716e705c121SKalle Valo tid_data->ssn = IEEE80211_SEQ_TO_SN(tid_data->seq_number); 1717e705c121SKalle Valo tid_data->txq_id = txq_id; 1718e705c121SKalle Valo *ssn = tid_data->ssn; 1719e705c121SKalle Valo 1720e705c121SKalle Valo IWL_DEBUG_TX_QUEUES(mvm, 1721e705c121SKalle Valo "Start AGG: sta %d tid %d queue %d - ssn = %d, next_recl = %d\n", 1722e705c121SKalle Valo mvmsta->sta_id, tid, txq_id, tid_data->ssn, 1723e705c121SKalle Valo tid_data->next_reclaimed); 1724e705c121SKalle Valo 1725e705c121SKalle Valo if (tid_data->ssn == tid_data->next_reclaimed) { 1726e705c121SKalle Valo tid_data->state = IWL_AGG_STARTING; 1727e705c121SKalle Valo ieee80211_start_tx_ba_cb_irqsafe(vif, sta->addr, tid); 1728e705c121SKalle Valo } else { 1729e705c121SKalle Valo tid_data->state = IWL_EMPTYING_HW_QUEUE_ADDBA; 1730e705c121SKalle Valo } 1731e705c121SKalle Valo 1732e705c121SKalle Valo ret = 0; 1733e705c121SKalle Valo 1734e705c121SKalle Valo release_locks: 1735e705c121SKalle Valo spin_unlock_bh(&mvmsta->lock); 1736e705c121SKalle Valo 1737e705c121SKalle Valo return ret; 1738e705c121SKalle Valo } 1739e705c121SKalle Valo 1740e705c121SKalle Valo int iwl_mvm_sta_tx_agg_oper(struct iwl_mvm *mvm, struct ieee80211_vif *vif, 1741bb81bb68SEmmanuel Grumbach struct ieee80211_sta *sta, u16 tid, u8 buf_size, 1742bb81bb68SEmmanuel Grumbach bool amsdu) 1743e705c121SKalle Valo { 1744e705c121SKalle Valo struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta); 1745e705c121SKalle Valo struct iwl_mvm_tid_data *tid_data = &mvmsta->tid_data[tid]; 1746e705c121SKalle Valo unsigned int wdg_timeout = 1747e705c121SKalle Valo iwl_mvm_get_wd_timeout(mvm, vif, sta->tdls, false); 1748eea76c36SEmmanuel Grumbach int queue, ret; 1749cf961e16SLiad Kaufman bool alloc_queue = true; 1750e705c121SKalle Valo u16 ssn; 1751e705c121SKalle Valo 1752eea76c36SEmmanuel Grumbach struct iwl_trans_txq_scd_cfg cfg = { 1753eea76c36SEmmanuel Grumbach .sta_id = mvmsta->sta_id, 1754eea76c36SEmmanuel Grumbach .tid = tid, 1755eea76c36SEmmanuel Grumbach .frame_limit = buf_size, 1756eea76c36SEmmanuel Grumbach .aggregate = true, 1757eea76c36SEmmanuel Grumbach }; 1758eea76c36SEmmanuel Grumbach 1759e705c121SKalle Valo BUILD_BUG_ON((sizeof(mvmsta->agg_tids) * BITS_PER_BYTE) 1760e705c121SKalle Valo != IWL_MAX_TID_COUNT); 1761e705c121SKalle Valo 1762e705c121SKalle Valo buf_size = min_t(int, buf_size, LINK_QUAL_AGG_FRAME_LIMIT_DEF); 1763e705c121SKalle Valo 1764e705c121SKalle Valo spin_lock_bh(&mvmsta->lock); 1765e705c121SKalle Valo ssn = tid_data->ssn; 1766e705c121SKalle Valo queue = tid_data->txq_id; 1767e705c121SKalle Valo tid_data->state = IWL_AGG_ON; 1768e705c121SKalle Valo mvmsta->agg_tids |= BIT(tid); 1769e705c121SKalle Valo tid_data->ssn = 0xffff; 1770bb81bb68SEmmanuel Grumbach tid_data->amsdu_in_ampdu_allowed = amsdu; 1771e705c121SKalle Valo spin_unlock_bh(&mvmsta->lock); 1772e705c121SKalle Valo 1773eea76c36SEmmanuel Grumbach cfg.fifo = iwl_mvm_ac_to_tx_fifo[tid_to_mac80211_ac[tid]]; 1774e705c121SKalle Valo 1775cf961e16SLiad Kaufman /* In DQA mode, the existing queue might need to be reconfigured */ 1776cf961e16SLiad Kaufman if (iwl_mvm_is_dqa_supported(mvm)) { 1777cf961e16SLiad Kaufman spin_lock_bh(&mvm->queue_info_lock); 1778cf961e16SLiad Kaufman /* Maybe there is no need to even alloc a queue... */ 1779cf961e16SLiad Kaufman if (mvm->queue_info[queue].status == IWL_MVM_QUEUE_READY) 1780cf961e16SLiad Kaufman alloc_queue = false; 1781cf961e16SLiad Kaufman spin_unlock_bh(&mvm->queue_info_lock); 1782cf961e16SLiad Kaufman 1783cf961e16SLiad Kaufman /* 1784cf961e16SLiad Kaufman * Only reconfig the SCD for the queue if the window size has 1785cf961e16SLiad Kaufman * changed from current (become smaller) 1786cf961e16SLiad Kaufman */ 1787cf961e16SLiad Kaufman if (!alloc_queue && buf_size < mvmsta->max_agg_bufsize) { 1788cf961e16SLiad Kaufman /* 1789cf961e16SLiad Kaufman * If reconfiguring an existing queue, it first must be 1790cf961e16SLiad Kaufman * drained 1791cf961e16SLiad Kaufman */ 1792cf961e16SLiad Kaufman ret = iwl_trans_wait_tx_queue_empty(mvm->trans, 1793cf961e16SLiad Kaufman BIT(queue)); 1794cf961e16SLiad Kaufman if (ret) { 1795cf961e16SLiad Kaufman IWL_ERR(mvm, 1796cf961e16SLiad Kaufman "Error draining queue before reconfig\n"); 1797cf961e16SLiad Kaufman return ret; 1798cf961e16SLiad Kaufman } 1799cf961e16SLiad Kaufman 1800cf961e16SLiad Kaufman ret = iwl_mvm_reconfig_scd(mvm, queue, cfg.fifo, 1801cf961e16SLiad Kaufman mvmsta->sta_id, tid, 1802cf961e16SLiad Kaufman buf_size, ssn); 1803cf961e16SLiad Kaufman if (ret) { 1804cf961e16SLiad Kaufman IWL_ERR(mvm, 1805cf961e16SLiad Kaufman "Error reconfiguring TXQ #%d\n", queue); 1806cf961e16SLiad Kaufman return ret; 1807cf961e16SLiad Kaufman } 1808cf961e16SLiad Kaufman } 1809cf961e16SLiad Kaufman } 1810cf961e16SLiad Kaufman 1811cf961e16SLiad Kaufman if (alloc_queue) 1812cf961e16SLiad Kaufman iwl_mvm_enable_txq(mvm, queue, 1813cf961e16SLiad Kaufman vif->hw_queue[tid_to_mac80211_ac[tid]], ssn, 1814cf961e16SLiad Kaufman &cfg, wdg_timeout); 1815e705c121SKalle Valo 1816e705c121SKalle Valo ret = iwl_mvm_sta_tx_agg(mvm, sta, tid, queue, true); 1817e705c121SKalle Valo if (ret) 1818e705c121SKalle Valo return -EIO; 1819e705c121SKalle Valo 1820e705c121SKalle Valo /* No need to mark as reserved */ 1821e705c121SKalle Valo spin_lock_bh(&mvm->queue_info_lock); 1822cf961e16SLiad Kaufman mvm->queue_info[queue].status = IWL_MVM_QUEUE_READY; 1823e705c121SKalle Valo spin_unlock_bh(&mvm->queue_info_lock); 1824e705c121SKalle Valo 1825e705c121SKalle Valo /* 1826e705c121SKalle Valo * Even though in theory the peer could have different 1827e705c121SKalle Valo * aggregation reorder buffer sizes for different sessions, 1828e705c121SKalle Valo * our ucode doesn't allow for that and has a global limit 1829e705c121SKalle Valo * for each station. Therefore, use the minimum of all the 1830e705c121SKalle Valo * aggregation sessions and our default value. 1831e705c121SKalle Valo */ 1832e705c121SKalle Valo mvmsta->max_agg_bufsize = 1833e705c121SKalle Valo min(mvmsta->max_agg_bufsize, buf_size); 1834e705c121SKalle Valo mvmsta->lq_sta.lq.agg_frame_cnt_limit = mvmsta->max_agg_bufsize; 1835e705c121SKalle Valo 1836e705c121SKalle Valo IWL_DEBUG_HT(mvm, "Tx aggregation enabled on ra = %pM tid = %d\n", 1837e705c121SKalle Valo sta->addr, tid); 1838e705c121SKalle Valo 1839e705c121SKalle Valo return iwl_mvm_send_lq_cmd(mvm, &mvmsta->lq_sta.lq, false); 1840e705c121SKalle Valo } 1841e705c121SKalle Valo 1842e705c121SKalle Valo int iwl_mvm_sta_tx_agg_stop(struct iwl_mvm *mvm, struct ieee80211_vif *vif, 1843e705c121SKalle Valo struct ieee80211_sta *sta, u16 tid) 1844e705c121SKalle Valo { 1845e705c121SKalle Valo struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta); 1846e705c121SKalle Valo struct iwl_mvm_tid_data *tid_data = &mvmsta->tid_data[tid]; 1847e705c121SKalle Valo u16 txq_id; 1848e705c121SKalle Valo int err; 1849e705c121SKalle Valo 1850e705c121SKalle Valo 1851e705c121SKalle Valo /* 1852e705c121SKalle Valo * If mac80211 is cleaning its state, then say that we finished since 1853e705c121SKalle Valo * our state has been cleared anyway. 1854e705c121SKalle Valo */ 1855e705c121SKalle Valo if (test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status)) { 1856e705c121SKalle Valo ieee80211_stop_tx_ba_cb_irqsafe(vif, sta->addr, tid); 1857e705c121SKalle Valo return 0; 1858e705c121SKalle Valo } 1859e705c121SKalle Valo 1860e705c121SKalle Valo spin_lock_bh(&mvmsta->lock); 1861e705c121SKalle Valo 1862e705c121SKalle Valo txq_id = tid_data->txq_id; 1863e705c121SKalle Valo 1864e705c121SKalle Valo IWL_DEBUG_TX_QUEUES(mvm, "Stop AGG: sta %d tid %d q %d state %d\n", 1865e705c121SKalle Valo mvmsta->sta_id, tid, txq_id, tid_data->state); 1866e705c121SKalle Valo 1867e705c121SKalle Valo mvmsta->agg_tids &= ~BIT(tid); 1868e705c121SKalle Valo 1869e705c121SKalle Valo spin_lock_bh(&mvm->queue_info_lock); 1870cf961e16SLiad Kaufman /* 1871cf961e16SLiad Kaufman * The TXQ is marked as reserved only if no traffic came through yet 1872cf961e16SLiad Kaufman * This means no traffic has been sent on this TID (agg'd or not), so 1873cf961e16SLiad Kaufman * we no longer have use for the queue. Since it hasn't even been 1874cf961e16SLiad Kaufman * allocated through iwl_mvm_enable_txq, so we can just mark it back as 1875cf961e16SLiad Kaufman * free. 1876cf961e16SLiad Kaufman */ 1877cf961e16SLiad Kaufman if (mvm->queue_info[txq_id].status == IWL_MVM_QUEUE_RESERVED) 1878cf961e16SLiad Kaufman mvm->queue_info[txq_id].status = IWL_MVM_QUEUE_FREE; 1879e705c121SKalle Valo spin_unlock_bh(&mvm->queue_info_lock); 1880e705c121SKalle Valo 1881e705c121SKalle Valo switch (tid_data->state) { 1882e705c121SKalle Valo case IWL_AGG_ON: 1883e705c121SKalle Valo tid_data->ssn = IEEE80211_SEQ_TO_SN(tid_data->seq_number); 1884e705c121SKalle Valo 1885e705c121SKalle Valo IWL_DEBUG_TX_QUEUES(mvm, 1886e705c121SKalle Valo "ssn = %d, next_recl = %d\n", 1887e705c121SKalle Valo tid_data->ssn, tid_data->next_reclaimed); 1888e705c121SKalle Valo 1889e705c121SKalle Valo /* There are still packets for this RA / TID in the HW */ 1890e705c121SKalle Valo if (tid_data->ssn != tid_data->next_reclaimed) { 1891e705c121SKalle Valo tid_data->state = IWL_EMPTYING_HW_QUEUE_DELBA; 1892e705c121SKalle Valo err = 0; 1893e705c121SKalle Valo break; 1894e705c121SKalle Valo } 1895e705c121SKalle Valo 1896e705c121SKalle Valo tid_data->ssn = 0xffff; 1897e705c121SKalle Valo tid_data->state = IWL_AGG_OFF; 1898e705c121SKalle Valo spin_unlock_bh(&mvmsta->lock); 1899e705c121SKalle Valo 1900e705c121SKalle Valo ieee80211_stop_tx_ba_cb_irqsafe(vif, sta->addr, tid); 1901e705c121SKalle Valo 1902e705c121SKalle Valo iwl_mvm_sta_tx_agg(mvm, sta, tid, txq_id, false); 1903e705c121SKalle Valo 1904cf961e16SLiad Kaufman if (!iwl_mvm_is_dqa_supported(mvm)) { 1905cf961e16SLiad Kaufman int mac_queue = vif->hw_queue[tid_to_mac80211_ac[tid]]; 1906cf961e16SLiad Kaufman 1907cf961e16SLiad Kaufman iwl_mvm_disable_txq(mvm, txq_id, mac_queue, tid, 0); 1908cf961e16SLiad Kaufman } 1909e705c121SKalle Valo return 0; 1910e705c121SKalle Valo case IWL_AGG_STARTING: 1911e705c121SKalle Valo case IWL_EMPTYING_HW_QUEUE_ADDBA: 1912e705c121SKalle Valo /* 1913e705c121SKalle Valo * The agg session has been stopped before it was set up. This 1914e705c121SKalle Valo * can happen when the AddBA timer times out for example. 1915e705c121SKalle Valo */ 1916e705c121SKalle Valo 1917e705c121SKalle Valo /* No barriers since we are under mutex */ 1918e705c121SKalle Valo lockdep_assert_held(&mvm->mutex); 1919e705c121SKalle Valo 1920e705c121SKalle Valo ieee80211_stop_tx_ba_cb_irqsafe(vif, sta->addr, tid); 1921e705c121SKalle Valo tid_data->state = IWL_AGG_OFF; 1922e705c121SKalle Valo err = 0; 1923e705c121SKalle Valo break; 1924e705c121SKalle Valo default: 1925e705c121SKalle Valo IWL_ERR(mvm, 1926e705c121SKalle Valo "Stopping AGG while state not ON or starting for %d on %d (%d)\n", 1927e705c121SKalle Valo mvmsta->sta_id, tid, tid_data->state); 1928e705c121SKalle Valo IWL_ERR(mvm, 1929e705c121SKalle Valo "\ttid_data->txq_id = %d\n", tid_data->txq_id); 1930e705c121SKalle Valo err = -EINVAL; 1931e705c121SKalle Valo } 1932e705c121SKalle Valo 1933e705c121SKalle Valo spin_unlock_bh(&mvmsta->lock); 1934e705c121SKalle Valo 1935e705c121SKalle Valo return err; 1936e705c121SKalle Valo } 1937e705c121SKalle Valo 1938e705c121SKalle Valo int iwl_mvm_sta_tx_agg_flush(struct iwl_mvm *mvm, struct ieee80211_vif *vif, 1939e705c121SKalle Valo struct ieee80211_sta *sta, u16 tid) 1940e705c121SKalle Valo { 1941e705c121SKalle Valo struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta); 1942e705c121SKalle Valo struct iwl_mvm_tid_data *tid_data = &mvmsta->tid_data[tid]; 1943e705c121SKalle Valo u16 txq_id; 1944e705c121SKalle Valo enum iwl_mvm_agg_state old_state; 1945e705c121SKalle Valo 1946e705c121SKalle Valo /* 1947e705c121SKalle Valo * First set the agg state to OFF to avoid calling 1948e705c121SKalle Valo * ieee80211_stop_tx_ba_cb in iwl_mvm_check_ratid_empty. 1949e705c121SKalle Valo */ 1950e705c121SKalle Valo spin_lock_bh(&mvmsta->lock); 1951e705c121SKalle Valo txq_id = tid_data->txq_id; 1952e705c121SKalle Valo IWL_DEBUG_TX_QUEUES(mvm, "Flush AGG: sta %d tid %d q %d state %d\n", 1953e705c121SKalle Valo mvmsta->sta_id, tid, txq_id, tid_data->state); 1954e705c121SKalle Valo old_state = tid_data->state; 1955e705c121SKalle Valo tid_data->state = IWL_AGG_OFF; 1956e705c121SKalle Valo mvmsta->agg_tids &= ~BIT(tid); 1957e705c121SKalle Valo spin_unlock_bh(&mvmsta->lock); 1958e705c121SKalle Valo 1959e705c121SKalle Valo spin_lock_bh(&mvm->queue_info_lock); 1960cf961e16SLiad Kaufman /* 1961cf961e16SLiad Kaufman * The TXQ is marked as reserved only if no traffic came through yet 1962cf961e16SLiad Kaufman * This means no traffic has been sent on this TID (agg'd or not), so 1963cf961e16SLiad Kaufman * we no longer have use for the queue. Since it hasn't even been 1964cf961e16SLiad Kaufman * allocated through iwl_mvm_enable_txq, so we can just mark it back as 1965cf961e16SLiad Kaufman * free. 1966cf961e16SLiad Kaufman */ 1967cf961e16SLiad Kaufman if (mvm->queue_info[txq_id].status == IWL_MVM_QUEUE_RESERVED) 1968cf961e16SLiad Kaufman mvm->queue_info[txq_id].status = IWL_MVM_QUEUE_FREE; 1969e705c121SKalle Valo spin_unlock_bh(&mvm->queue_info_lock); 1970e705c121SKalle Valo 1971e705c121SKalle Valo if (old_state >= IWL_AGG_ON) { 1972e705c121SKalle Valo iwl_mvm_drain_sta(mvm, mvmsta, true); 1973e705c121SKalle Valo if (iwl_mvm_flush_tx_path(mvm, BIT(txq_id), 0)) 1974e705c121SKalle Valo IWL_ERR(mvm, "Couldn't flush the AGG queue\n"); 1975e705c121SKalle Valo iwl_trans_wait_tx_queue_empty(mvm->trans, 1976e705c121SKalle Valo mvmsta->tfd_queue_msk); 1977e705c121SKalle Valo iwl_mvm_drain_sta(mvm, mvmsta, false); 1978e705c121SKalle Valo 1979e705c121SKalle Valo iwl_mvm_sta_tx_agg(mvm, sta, tid, txq_id, false); 1980e705c121SKalle Valo 1981cf961e16SLiad Kaufman if (!iwl_mvm_is_dqa_supported(mvm)) { 1982cf961e16SLiad Kaufman int mac_queue = vif->hw_queue[tid_to_mac80211_ac[tid]]; 1983cf961e16SLiad Kaufman 1984cf961e16SLiad Kaufman iwl_mvm_disable_txq(mvm, tid_data->txq_id, mac_queue, 1985cf961e16SLiad Kaufman tid, 0); 1986cf961e16SLiad Kaufman } 1987e705c121SKalle Valo } 1988e705c121SKalle Valo 1989e705c121SKalle Valo return 0; 1990e705c121SKalle Valo } 1991e705c121SKalle Valo 1992e705c121SKalle Valo static int iwl_mvm_set_fw_key_idx(struct iwl_mvm *mvm) 1993e705c121SKalle Valo { 1994e705c121SKalle Valo int i, max = -1, max_offs = -1; 1995e705c121SKalle Valo 1996e705c121SKalle Valo lockdep_assert_held(&mvm->mutex); 1997e705c121SKalle Valo 1998e705c121SKalle Valo /* Pick the unused key offset with the highest 'deleted' 1999e705c121SKalle Valo * counter. Every time a key is deleted, all the counters 2000e705c121SKalle Valo * are incremented and the one that was just deleted is 2001e705c121SKalle Valo * reset to zero. Thus, the highest counter is the one 2002e705c121SKalle Valo * that was deleted longest ago. Pick that one. 2003e705c121SKalle Valo */ 2004e705c121SKalle Valo for (i = 0; i < STA_KEY_MAX_NUM; i++) { 2005e705c121SKalle Valo if (test_bit(i, mvm->fw_key_table)) 2006e705c121SKalle Valo continue; 2007e705c121SKalle Valo if (mvm->fw_key_deleted[i] > max) { 2008e705c121SKalle Valo max = mvm->fw_key_deleted[i]; 2009e705c121SKalle Valo max_offs = i; 2010e705c121SKalle Valo } 2011e705c121SKalle Valo } 2012e705c121SKalle Valo 2013e705c121SKalle Valo if (max_offs < 0) 2014e705c121SKalle Valo return STA_KEY_IDX_INVALID; 2015e705c121SKalle Valo 2016e705c121SKalle Valo return max_offs; 2017e705c121SKalle Valo } 2018e705c121SKalle Valo 20195f7a1847SJohannes Berg static struct iwl_mvm_sta *iwl_mvm_get_key_sta(struct iwl_mvm *mvm, 20204615fd15SEmmanuel Grumbach struct ieee80211_vif *vif, 2021e705c121SKalle Valo struct ieee80211_sta *sta) 2022e705c121SKalle Valo { 2023e705c121SKalle Valo struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 2024e705c121SKalle Valo 20255f7a1847SJohannes Berg if (sta) 20265f7a1847SJohannes Berg return iwl_mvm_sta_from_mac80211(sta); 2027e705c121SKalle Valo 2028e705c121SKalle Valo /* 2029e705c121SKalle Valo * The device expects GTKs for station interfaces to be 2030e705c121SKalle Valo * installed as GTKs for the AP station. If we have no 2031e705c121SKalle Valo * station ID, then use AP's station ID. 2032e705c121SKalle Valo */ 2033e705c121SKalle Valo if (vif->type == NL80211_IFTYPE_STATION && 20344615fd15SEmmanuel Grumbach mvmvif->ap_sta_id != IWL_MVM_STATION_COUNT) { 20354615fd15SEmmanuel Grumbach u8 sta_id = mvmvif->ap_sta_id; 20364615fd15SEmmanuel Grumbach 20374615fd15SEmmanuel Grumbach /* 20384615fd15SEmmanuel Grumbach * It is possible that the 'sta' parameter is NULL, 20394615fd15SEmmanuel Grumbach * for example when a GTK is removed - the sta_id will then 20404615fd15SEmmanuel Grumbach * be the AP ID, and no station was passed by mac80211. 20414615fd15SEmmanuel Grumbach */ 204213303c0fSSara Sharon return iwl_mvm_sta_from_staid_protected(mvm, sta_id); 20434615fd15SEmmanuel Grumbach } 2044e705c121SKalle Valo 20455f7a1847SJohannes Berg return NULL; 2046e705c121SKalle Valo } 2047e705c121SKalle Valo 2048e705c121SKalle Valo static int iwl_mvm_send_sta_key(struct iwl_mvm *mvm, 2049e705c121SKalle Valo struct iwl_mvm_sta *mvm_sta, 2050e705c121SKalle Valo struct ieee80211_key_conf *keyconf, bool mcast, 20514615fd15SEmmanuel Grumbach u32 tkip_iv32, u16 *tkip_p1k, u32 cmd_flags, 20524615fd15SEmmanuel Grumbach u8 key_offset) 2053e705c121SKalle Valo { 2054e705c121SKalle Valo struct iwl_mvm_add_sta_key_cmd cmd = {}; 2055e705c121SKalle Valo __le16 key_flags; 2056e705c121SKalle Valo int ret; 2057e705c121SKalle Valo u32 status; 2058e705c121SKalle Valo u16 keyidx; 2059e705c121SKalle Valo int i; 2060e705c121SKalle Valo u8 sta_id = mvm_sta->sta_id; 2061e705c121SKalle Valo 2062e705c121SKalle Valo keyidx = (keyconf->keyidx << STA_KEY_FLG_KEYID_POS) & 2063e705c121SKalle Valo STA_KEY_FLG_KEYID_MSK; 2064e705c121SKalle Valo key_flags = cpu_to_le16(keyidx); 2065e705c121SKalle Valo key_flags |= cpu_to_le16(STA_KEY_FLG_WEP_KEY_MAP); 2066e705c121SKalle Valo 2067e705c121SKalle Valo switch (keyconf->cipher) { 2068e705c121SKalle Valo case WLAN_CIPHER_SUITE_TKIP: 2069e705c121SKalle Valo key_flags |= cpu_to_le16(STA_KEY_FLG_TKIP); 2070e705c121SKalle Valo cmd.tkip_rx_tsc_byte2 = tkip_iv32; 2071e705c121SKalle Valo for (i = 0; i < 5; i++) 2072e705c121SKalle Valo cmd.tkip_rx_ttak[i] = cpu_to_le16(tkip_p1k[i]); 2073e705c121SKalle Valo memcpy(cmd.key, keyconf->key, keyconf->keylen); 2074e705c121SKalle Valo break; 2075e705c121SKalle Valo case WLAN_CIPHER_SUITE_CCMP: 2076e705c121SKalle Valo key_flags |= cpu_to_le16(STA_KEY_FLG_CCM); 2077e705c121SKalle Valo memcpy(cmd.key, keyconf->key, keyconf->keylen); 2078e705c121SKalle Valo break; 2079e705c121SKalle Valo case WLAN_CIPHER_SUITE_WEP104: 2080e705c121SKalle Valo key_flags |= cpu_to_le16(STA_KEY_FLG_WEP_13BYTES); 2081e705c121SKalle Valo /* fall through */ 2082e705c121SKalle Valo case WLAN_CIPHER_SUITE_WEP40: 2083e705c121SKalle Valo key_flags |= cpu_to_le16(STA_KEY_FLG_WEP); 2084e705c121SKalle Valo memcpy(cmd.key + 3, keyconf->key, keyconf->keylen); 2085e705c121SKalle Valo break; 2086e705c121SKalle Valo default: 2087e705c121SKalle Valo key_flags |= cpu_to_le16(STA_KEY_FLG_EXT); 2088e705c121SKalle Valo memcpy(cmd.key, keyconf->key, keyconf->keylen); 2089e705c121SKalle Valo } 2090e705c121SKalle Valo 2091e705c121SKalle Valo if (mcast) 2092e705c121SKalle Valo key_flags |= cpu_to_le16(STA_KEY_MULTICAST); 2093e705c121SKalle Valo 20944615fd15SEmmanuel Grumbach cmd.key_offset = key_offset; 2095e705c121SKalle Valo cmd.key_flags = key_flags; 2096e705c121SKalle Valo cmd.sta_id = sta_id; 2097e705c121SKalle Valo 2098e705c121SKalle Valo status = ADD_STA_SUCCESS; 2099e705c121SKalle Valo if (cmd_flags & CMD_ASYNC) 2100e705c121SKalle Valo ret = iwl_mvm_send_cmd_pdu(mvm, ADD_STA_KEY, CMD_ASYNC, 2101e705c121SKalle Valo sizeof(cmd), &cmd); 2102e705c121SKalle Valo else 2103e705c121SKalle Valo ret = iwl_mvm_send_cmd_pdu_status(mvm, ADD_STA_KEY, sizeof(cmd), 2104e705c121SKalle Valo &cmd, &status); 2105e705c121SKalle Valo 2106e705c121SKalle Valo switch (status) { 2107e705c121SKalle Valo case ADD_STA_SUCCESS: 2108e705c121SKalle Valo IWL_DEBUG_WEP(mvm, "MODIFY_STA: set dynamic key passed\n"); 2109e705c121SKalle Valo break; 2110e705c121SKalle Valo default: 2111e705c121SKalle Valo ret = -EIO; 2112e705c121SKalle Valo IWL_ERR(mvm, "MODIFY_STA: set dynamic key failed\n"); 2113e705c121SKalle Valo break; 2114e705c121SKalle Valo } 2115e705c121SKalle Valo 2116e705c121SKalle Valo return ret; 2117e705c121SKalle Valo } 2118e705c121SKalle Valo 2119e705c121SKalle Valo static int iwl_mvm_send_sta_igtk(struct iwl_mvm *mvm, 2120e705c121SKalle Valo struct ieee80211_key_conf *keyconf, 2121e705c121SKalle Valo u8 sta_id, bool remove_key) 2122e705c121SKalle Valo { 2123e705c121SKalle Valo struct iwl_mvm_mgmt_mcast_key_cmd igtk_cmd = {}; 2124e705c121SKalle Valo 2125e705c121SKalle Valo /* verify the key details match the required command's expectations */ 2126e705c121SKalle Valo if (WARN_ON((keyconf->cipher != WLAN_CIPHER_SUITE_AES_CMAC) || 2127e705c121SKalle Valo (keyconf->flags & IEEE80211_KEY_FLAG_PAIRWISE) || 2128e705c121SKalle Valo (keyconf->keyidx != 4 && keyconf->keyidx != 5))) 2129e705c121SKalle Valo return -EINVAL; 2130e705c121SKalle Valo 2131e705c121SKalle Valo igtk_cmd.key_id = cpu_to_le32(keyconf->keyidx); 2132e705c121SKalle Valo igtk_cmd.sta_id = cpu_to_le32(sta_id); 2133e705c121SKalle Valo 2134e705c121SKalle Valo if (remove_key) { 2135e705c121SKalle Valo igtk_cmd.ctrl_flags |= cpu_to_le32(STA_KEY_NOT_VALID); 2136e705c121SKalle Valo } else { 2137e705c121SKalle Valo struct ieee80211_key_seq seq; 2138e705c121SKalle Valo const u8 *pn; 2139e705c121SKalle Valo 2140e705c121SKalle Valo memcpy(igtk_cmd.IGTK, keyconf->key, keyconf->keylen); 2141e705c121SKalle Valo ieee80211_get_key_rx_seq(keyconf, 0, &seq); 2142e705c121SKalle Valo pn = seq.aes_cmac.pn; 2143e705c121SKalle Valo igtk_cmd.receive_seq_cnt = cpu_to_le64(((u64) pn[5] << 0) | 2144e705c121SKalle Valo ((u64) pn[4] << 8) | 2145e705c121SKalle Valo ((u64) pn[3] << 16) | 2146e705c121SKalle Valo ((u64) pn[2] << 24) | 2147e705c121SKalle Valo ((u64) pn[1] << 32) | 2148e705c121SKalle Valo ((u64) pn[0] << 40)); 2149e705c121SKalle Valo } 2150e705c121SKalle Valo 2151e705c121SKalle Valo IWL_DEBUG_INFO(mvm, "%s igtk for sta %u\n", 2152e705c121SKalle Valo remove_key ? "removing" : "installing", 2153e705c121SKalle Valo igtk_cmd.sta_id); 2154e705c121SKalle Valo 2155e705c121SKalle Valo return iwl_mvm_send_cmd_pdu(mvm, MGMT_MCAST_KEY, 0, 2156e705c121SKalle Valo sizeof(igtk_cmd), &igtk_cmd); 2157e705c121SKalle Valo } 2158e705c121SKalle Valo 2159e705c121SKalle Valo 2160e705c121SKalle Valo static inline u8 *iwl_mvm_get_mac_addr(struct iwl_mvm *mvm, 2161e705c121SKalle Valo struct ieee80211_vif *vif, 2162e705c121SKalle Valo struct ieee80211_sta *sta) 2163e705c121SKalle Valo { 2164e705c121SKalle Valo struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 2165e705c121SKalle Valo 2166e705c121SKalle Valo if (sta) 2167e705c121SKalle Valo return sta->addr; 2168e705c121SKalle Valo 2169e705c121SKalle Valo if (vif->type == NL80211_IFTYPE_STATION && 2170e705c121SKalle Valo mvmvif->ap_sta_id != IWL_MVM_STATION_COUNT) { 2171e705c121SKalle Valo u8 sta_id = mvmvif->ap_sta_id; 2172e705c121SKalle Valo sta = rcu_dereference_protected(mvm->fw_id_to_mac_id[sta_id], 2173e705c121SKalle Valo lockdep_is_held(&mvm->mutex)); 2174e705c121SKalle Valo return sta->addr; 2175e705c121SKalle Valo } 2176e705c121SKalle Valo 2177e705c121SKalle Valo 2178e705c121SKalle Valo return NULL; 2179e705c121SKalle Valo } 2180e705c121SKalle Valo 2181e705c121SKalle Valo static int __iwl_mvm_set_sta_key(struct iwl_mvm *mvm, 2182e705c121SKalle Valo struct ieee80211_vif *vif, 2183e705c121SKalle Valo struct ieee80211_sta *sta, 2184e705c121SKalle Valo struct ieee80211_key_conf *keyconf, 21854615fd15SEmmanuel Grumbach u8 key_offset, 2186e705c121SKalle Valo bool mcast) 2187e705c121SKalle Valo { 2188e705c121SKalle Valo struct iwl_mvm_sta *mvm_sta = iwl_mvm_sta_from_mac80211(sta); 2189e705c121SKalle Valo int ret; 2190e705c121SKalle Valo const u8 *addr; 2191e705c121SKalle Valo struct ieee80211_key_seq seq; 2192e705c121SKalle Valo u16 p1k[5]; 2193e705c121SKalle Valo 2194e705c121SKalle Valo switch (keyconf->cipher) { 2195e705c121SKalle Valo case WLAN_CIPHER_SUITE_TKIP: 2196e705c121SKalle Valo addr = iwl_mvm_get_mac_addr(mvm, vif, sta); 2197e705c121SKalle Valo /* get phase 1 key from mac80211 */ 2198e705c121SKalle Valo ieee80211_get_key_rx_seq(keyconf, 0, &seq); 2199e705c121SKalle Valo ieee80211_get_tkip_rx_p1k(keyconf, addr, seq.tkip.iv32, p1k); 2200e705c121SKalle Valo ret = iwl_mvm_send_sta_key(mvm, mvm_sta, keyconf, mcast, 22014615fd15SEmmanuel Grumbach seq.tkip.iv32, p1k, 0, key_offset); 2202e705c121SKalle Valo break; 2203e705c121SKalle Valo case WLAN_CIPHER_SUITE_CCMP: 2204e705c121SKalle Valo case WLAN_CIPHER_SUITE_WEP40: 2205e705c121SKalle Valo case WLAN_CIPHER_SUITE_WEP104: 2206e705c121SKalle Valo ret = iwl_mvm_send_sta_key(mvm, mvm_sta, keyconf, mcast, 22074615fd15SEmmanuel Grumbach 0, NULL, 0, key_offset); 2208e705c121SKalle Valo break; 2209e705c121SKalle Valo default: 2210e705c121SKalle Valo ret = iwl_mvm_send_sta_key(mvm, mvm_sta, keyconf, mcast, 22114615fd15SEmmanuel Grumbach 0, NULL, 0, key_offset); 2212e705c121SKalle Valo } 2213e705c121SKalle Valo 2214e705c121SKalle Valo return ret; 2215e705c121SKalle Valo } 2216e705c121SKalle Valo 2217e705c121SKalle Valo static int __iwl_mvm_remove_sta_key(struct iwl_mvm *mvm, u8 sta_id, 2218e705c121SKalle Valo struct ieee80211_key_conf *keyconf, 2219e705c121SKalle Valo bool mcast) 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 2226e705c121SKalle Valo key_flags = cpu_to_le16((keyconf->keyidx << STA_KEY_FLG_KEYID_POS) & 2227e705c121SKalle Valo STA_KEY_FLG_KEYID_MSK); 2228e705c121SKalle Valo key_flags |= cpu_to_le16(STA_KEY_FLG_NO_ENC | STA_KEY_FLG_WEP_KEY_MAP); 2229e705c121SKalle Valo key_flags |= cpu_to_le16(STA_KEY_NOT_VALID); 2230e705c121SKalle Valo 2231e705c121SKalle Valo if (mcast) 2232e705c121SKalle Valo key_flags |= cpu_to_le16(STA_KEY_MULTICAST); 2233e705c121SKalle Valo 2234e705c121SKalle Valo cmd.key_flags = key_flags; 2235e705c121SKalle Valo cmd.key_offset = keyconf->hw_key_idx; 2236e705c121SKalle Valo cmd.sta_id = sta_id; 2237e705c121SKalle Valo 2238e705c121SKalle Valo status = ADD_STA_SUCCESS; 2239e705c121SKalle Valo ret = iwl_mvm_send_cmd_pdu_status(mvm, ADD_STA_KEY, sizeof(cmd), 2240e705c121SKalle Valo &cmd, &status); 2241e705c121SKalle Valo 2242e705c121SKalle Valo switch (status) { 2243e705c121SKalle Valo case ADD_STA_SUCCESS: 2244e705c121SKalle Valo IWL_DEBUG_WEP(mvm, "MODIFY_STA: remove sta key passed\n"); 2245e705c121SKalle Valo break; 2246e705c121SKalle Valo default: 2247e705c121SKalle Valo ret = -EIO; 2248e705c121SKalle Valo IWL_ERR(mvm, "MODIFY_STA: remove sta key failed\n"); 2249e705c121SKalle Valo break; 2250e705c121SKalle Valo } 2251e705c121SKalle Valo 2252e705c121SKalle Valo return ret; 2253e705c121SKalle Valo } 2254e705c121SKalle Valo 2255e705c121SKalle Valo int iwl_mvm_set_sta_key(struct iwl_mvm *mvm, 2256e705c121SKalle Valo struct ieee80211_vif *vif, 2257e705c121SKalle Valo struct ieee80211_sta *sta, 2258e705c121SKalle Valo struct ieee80211_key_conf *keyconf, 22594615fd15SEmmanuel Grumbach u8 key_offset) 2260e705c121SKalle Valo { 2261e705c121SKalle Valo bool mcast = !(keyconf->flags & IEEE80211_KEY_FLAG_PAIRWISE); 22625f7a1847SJohannes Berg struct iwl_mvm_sta *mvm_sta; 2263e705c121SKalle Valo u8 sta_id; 2264e705c121SKalle Valo int ret; 2265e705c121SKalle Valo static const u8 __maybe_unused zero_addr[ETH_ALEN] = {0}; 2266e705c121SKalle Valo 2267e705c121SKalle Valo lockdep_assert_held(&mvm->mutex); 2268e705c121SKalle Valo 2269e705c121SKalle Valo /* Get the station id from the mvm local station table */ 22705f7a1847SJohannes Berg mvm_sta = iwl_mvm_get_key_sta(mvm, vif, sta); 22715f7a1847SJohannes Berg if (!mvm_sta) { 22725f7a1847SJohannes Berg IWL_ERR(mvm, "Failed to find station\n"); 2273e705c121SKalle Valo return -EINVAL; 2274e705c121SKalle Valo } 22755f7a1847SJohannes Berg sta_id = mvm_sta->sta_id; 2276e705c121SKalle Valo 2277e705c121SKalle Valo if (keyconf->cipher == WLAN_CIPHER_SUITE_AES_CMAC) { 2278e705c121SKalle Valo ret = iwl_mvm_send_sta_igtk(mvm, keyconf, sta_id, false); 2279e705c121SKalle Valo goto end; 2280e705c121SKalle Valo } 2281e705c121SKalle Valo 2282e705c121SKalle Valo /* 2283e705c121SKalle Valo * It is possible that the 'sta' parameter is NULL, and thus 2284e705c121SKalle Valo * there is a need to retrieve the sta from the local station table. 2285e705c121SKalle Valo */ 2286e705c121SKalle Valo if (!sta) { 2287e705c121SKalle Valo sta = rcu_dereference_protected(mvm->fw_id_to_mac_id[sta_id], 2288e705c121SKalle Valo lockdep_is_held(&mvm->mutex)); 2289e705c121SKalle Valo if (IS_ERR_OR_NULL(sta)) { 2290e705c121SKalle Valo IWL_ERR(mvm, "Invalid station id\n"); 2291e705c121SKalle Valo return -EINVAL; 2292e705c121SKalle Valo } 2293e705c121SKalle Valo } 2294e705c121SKalle Valo 2295e705c121SKalle Valo if (WARN_ON_ONCE(iwl_mvm_sta_from_mac80211(sta)->vif != vif)) 2296e705c121SKalle Valo return -EINVAL; 2297e705c121SKalle Valo 22984615fd15SEmmanuel Grumbach /* If the key_offset is not pre-assigned, we need to find a 22994615fd15SEmmanuel Grumbach * new offset to use. In normal cases, the offset is not 23004615fd15SEmmanuel Grumbach * pre-assigned, but during HW_RESTART we want to reuse the 23014615fd15SEmmanuel Grumbach * same indices, so we pass them when this function is called. 23024615fd15SEmmanuel Grumbach * 23034615fd15SEmmanuel Grumbach * In D3 entry, we need to hardcoded the indices (because the 23044615fd15SEmmanuel Grumbach * firmware hardcodes the PTK offset to 0). In this case, we 23054615fd15SEmmanuel Grumbach * need to make sure we don't overwrite the hw_key_idx in the 23064615fd15SEmmanuel Grumbach * keyconf structure, because otherwise we cannot configure 23074615fd15SEmmanuel Grumbach * the original ones back when resuming. 2308e705c121SKalle Valo */ 23094615fd15SEmmanuel Grumbach if (key_offset == STA_KEY_IDX_INVALID) { 23104615fd15SEmmanuel Grumbach key_offset = iwl_mvm_set_fw_key_idx(mvm); 23114615fd15SEmmanuel Grumbach if (key_offset == STA_KEY_IDX_INVALID) 2312e705c121SKalle Valo return -ENOSPC; 23134615fd15SEmmanuel Grumbach keyconf->hw_key_idx = key_offset; 2314e705c121SKalle Valo } 2315e705c121SKalle Valo 23164615fd15SEmmanuel Grumbach ret = __iwl_mvm_set_sta_key(mvm, vif, sta, keyconf, key_offset, mcast); 23179c3deeb5SLuca Coelho if (ret) 2318e705c121SKalle Valo goto end; 2319e705c121SKalle Valo 2320e705c121SKalle Valo /* 2321e705c121SKalle Valo * For WEP, the same key is used for multicast and unicast. Upload it 2322e705c121SKalle Valo * again, using the same key offset, and now pointing the other one 2323e705c121SKalle Valo * to the same key slot (offset). 2324e705c121SKalle Valo * If this fails, remove the original as well. 2325e705c121SKalle Valo */ 2326e705c121SKalle Valo if (keyconf->cipher == WLAN_CIPHER_SUITE_WEP40 || 2327e705c121SKalle Valo keyconf->cipher == WLAN_CIPHER_SUITE_WEP104) { 23284615fd15SEmmanuel Grumbach ret = __iwl_mvm_set_sta_key(mvm, vif, sta, keyconf, 23294615fd15SEmmanuel Grumbach key_offset, !mcast); 2330e705c121SKalle Valo if (ret) { 2331e705c121SKalle Valo __iwl_mvm_remove_sta_key(mvm, sta_id, keyconf, mcast); 23329c3deeb5SLuca Coelho goto end; 2333e705c121SKalle Valo } 2334e705c121SKalle Valo } 2335e705c121SKalle Valo 23369c3deeb5SLuca Coelho __set_bit(key_offset, mvm->fw_key_table); 23379c3deeb5SLuca Coelho 2338e705c121SKalle Valo end: 2339e705c121SKalle Valo IWL_DEBUG_WEP(mvm, "key: cipher=%x len=%d idx=%d sta=%pM ret=%d\n", 2340e705c121SKalle Valo keyconf->cipher, keyconf->keylen, keyconf->keyidx, 2341e705c121SKalle Valo sta ? sta->addr : zero_addr, ret); 2342e705c121SKalle Valo return ret; 2343e705c121SKalle Valo } 2344e705c121SKalle Valo 2345e705c121SKalle Valo int iwl_mvm_remove_sta_key(struct iwl_mvm *mvm, 2346e705c121SKalle Valo struct ieee80211_vif *vif, 2347e705c121SKalle Valo struct ieee80211_sta *sta, 2348e705c121SKalle Valo struct ieee80211_key_conf *keyconf) 2349e705c121SKalle Valo { 2350e705c121SKalle Valo bool mcast = !(keyconf->flags & IEEE80211_KEY_FLAG_PAIRWISE); 23515f7a1847SJohannes Berg struct iwl_mvm_sta *mvm_sta; 23525f7a1847SJohannes Berg u8 sta_id = IWL_MVM_STATION_COUNT; 2353e705c121SKalle Valo int ret, i; 2354e705c121SKalle Valo 2355e705c121SKalle Valo lockdep_assert_held(&mvm->mutex); 2356e705c121SKalle Valo 23575f7a1847SJohannes Berg /* Get the station from the mvm local station table */ 23585f7a1847SJohannes Berg mvm_sta = iwl_mvm_get_key_sta(mvm, vif, sta); 2359e705c121SKalle Valo 2360e705c121SKalle Valo IWL_DEBUG_WEP(mvm, "mvm remove dynamic key: idx=%d sta=%d\n", 2361e705c121SKalle Valo keyconf->keyidx, sta_id); 2362e705c121SKalle Valo 2363e705c121SKalle Valo if (keyconf->cipher == WLAN_CIPHER_SUITE_AES_CMAC) 2364e705c121SKalle Valo return iwl_mvm_send_sta_igtk(mvm, keyconf, sta_id, true); 2365e705c121SKalle Valo 2366e705c121SKalle Valo if (!__test_and_clear_bit(keyconf->hw_key_idx, mvm->fw_key_table)) { 2367e705c121SKalle Valo IWL_ERR(mvm, "offset %d not used in fw key table.\n", 2368e705c121SKalle Valo keyconf->hw_key_idx); 2369e705c121SKalle Valo return -ENOENT; 2370e705c121SKalle Valo } 2371e705c121SKalle Valo 2372e705c121SKalle Valo /* track which key was deleted last */ 2373e705c121SKalle Valo for (i = 0; i < STA_KEY_MAX_NUM; i++) { 2374e705c121SKalle Valo if (mvm->fw_key_deleted[i] < U8_MAX) 2375e705c121SKalle Valo mvm->fw_key_deleted[i]++; 2376e705c121SKalle Valo } 2377e705c121SKalle Valo mvm->fw_key_deleted[keyconf->hw_key_idx] = 0; 2378e705c121SKalle Valo 23795f7a1847SJohannes Berg if (!mvm_sta) { 2380e705c121SKalle Valo IWL_DEBUG_WEP(mvm, "station non-existent, early return.\n"); 2381e705c121SKalle Valo return 0; 2382e705c121SKalle Valo } 2383e705c121SKalle Valo 23845f7a1847SJohannes Berg sta_id = mvm_sta->sta_id; 23855f7a1847SJohannes Berg 2386e705c121SKalle Valo ret = __iwl_mvm_remove_sta_key(mvm, sta_id, keyconf, mcast); 2387e705c121SKalle Valo if (ret) 2388e705c121SKalle Valo return ret; 2389e705c121SKalle Valo 2390e705c121SKalle Valo /* delete WEP key twice to get rid of (now useless) offset */ 2391e705c121SKalle Valo if (keyconf->cipher == WLAN_CIPHER_SUITE_WEP40 || 2392e705c121SKalle Valo keyconf->cipher == WLAN_CIPHER_SUITE_WEP104) 2393e705c121SKalle Valo ret = __iwl_mvm_remove_sta_key(mvm, sta_id, keyconf, !mcast); 2394e705c121SKalle Valo 2395e705c121SKalle Valo return ret; 2396e705c121SKalle Valo } 2397e705c121SKalle Valo 2398e705c121SKalle Valo void iwl_mvm_update_tkip_key(struct iwl_mvm *mvm, 2399e705c121SKalle Valo struct ieee80211_vif *vif, 2400e705c121SKalle Valo struct ieee80211_key_conf *keyconf, 2401e705c121SKalle Valo struct ieee80211_sta *sta, u32 iv32, 2402e705c121SKalle Valo u16 *phase1key) 2403e705c121SKalle Valo { 2404e705c121SKalle Valo struct iwl_mvm_sta *mvm_sta; 2405e705c121SKalle Valo bool mcast = !(keyconf->flags & IEEE80211_KEY_FLAG_PAIRWISE); 2406e705c121SKalle Valo 2407e705c121SKalle Valo rcu_read_lock(); 2408e705c121SKalle Valo 24095f7a1847SJohannes Berg mvm_sta = iwl_mvm_get_key_sta(mvm, vif, sta); 24105f7a1847SJohannes Berg if (WARN_ON_ONCE(!mvm_sta)) 241112f17211SEmmanuel Grumbach goto unlock; 2412e705c121SKalle Valo iwl_mvm_send_sta_key(mvm, mvm_sta, keyconf, mcast, 24134615fd15SEmmanuel Grumbach iv32, phase1key, CMD_ASYNC, keyconf->hw_key_idx); 241412f17211SEmmanuel Grumbach 241512f17211SEmmanuel Grumbach unlock: 2416e705c121SKalle Valo rcu_read_unlock(); 2417e705c121SKalle Valo } 2418e705c121SKalle Valo 2419e705c121SKalle Valo void iwl_mvm_sta_modify_ps_wake(struct iwl_mvm *mvm, 2420e705c121SKalle Valo struct ieee80211_sta *sta) 2421e705c121SKalle Valo { 2422e705c121SKalle Valo struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta); 2423e705c121SKalle Valo struct iwl_mvm_add_sta_cmd cmd = { 2424e705c121SKalle Valo .add_modify = STA_MODE_MODIFY, 2425e705c121SKalle Valo .sta_id = mvmsta->sta_id, 2426e705c121SKalle Valo .station_flags_msk = cpu_to_le32(STA_FLG_PS), 2427e705c121SKalle Valo .mac_id_n_color = cpu_to_le32(mvmsta->mac_id_n_color), 2428e705c121SKalle Valo }; 2429e705c121SKalle Valo int ret; 2430e705c121SKalle Valo 2431854c5705SSara Sharon ret = iwl_mvm_send_cmd_pdu(mvm, ADD_STA, CMD_ASYNC, 2432854c5705SSara Sharon iwl_mvm_add_sta_cmd_size(mvm), &cmd); 2433e705c121SKalle Valo if (ret) 2434e705c121SKalle Valo IWL_ERR(mvm, "Failed to send ADD_STA command (%d)\n", ret); 2435e705c121SKalle Valo } 2436e705c121SKalle Valo 2437e705c121SKalle Valo void iwl_mvm_sta_modify_sleep_tx_count(struct iwl_mvm *mvm, 2438e705c121SKalle Valo struct ieee80211_sta *sta, 2439e705c121SKalle Valo enum ieee80211_frame_release_type reason, 2440e705c121SKalle Valo u16 cnt, u16 tids, bool more_data, 2441e705c121SKalle Valo bool agg) 2442e705c121SKalle Valo { 2443e705c121SKalle Valo struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta); 2444e705c121SKalle Valo struct iwl_mvm_add_sta_cmd cmd = { 2445e705c121SKalle Valo .add_modify = STA_MODE_MODIFY, 2446e705c121SKalle Valo .sta_id = mvmsta->sta_id, 2447e705c121SKalle Valo .modify_mask = STA_MODIFY_SLEEPING_STA_TX_COUNT, 2448e705c121SKalle Valo .sleep_tx_count = cpu_to_le16(cnt), 2449e705c121SKalle Valo .mac_id_n_color = cpu_to_le32(mvmsta->mac_id_n_color), 2450e705c121SKalle Valo }; 2451e705c121SKalle Valo int tid, ret; 2452e705c121SKalle Valo unsigned long _tids = tids; 2453e705c121SKalle Valo 2454e705c121SKalle Valo /* convert TIDs to ACs - we don't support TSPEC so that's OK 2455e705c121SKalle Valo * Note that this field is reserved and unused by firmware not 2456e705c121SKalle Valo * supporting GO uAPSD, so it's safe to always do this. 2457e705c121SKalle Valo */ 2458e705c121SKalle Valo for_each_set_bit(tid, &_tids, IWL_MAX_TID_COUNT) 2459e705c121SKalle Valo cmd.awake_acs |= BIT(tid_to_ucode_ac[tid]); 2460e705c121SKalle Valo 2461e705c121SKalle Valo /* If we're releasing frames from aggregation queues then check if the 2462e705c121SKalle Valo * all queues combined that we're releasing frames from have 2463e705c121SKalle Valo * - more frames than the service period, in which case more_data 2464e705c121SKalle Valo * needs to be set 2465e705c121SKalle Valo * - fewer than 'cnt' frames, in which case we need to adjust the 2466e705c121SKalle Valo * firmware command (but do that unconditionally) 2467e705c121SKalle Valo */ 2468e705c121SKalle Valo if (agg) { 2469e705c121SKalle Valo int remaining = cnt; 247036be0eb6SEmmanuel Grumbach int sleep_tx_count; 2471e705c121SKalle Valo 2472e705c121SKalle Valo spin_lock_bh(&mvmsta->lock); 2473e705c121SKalle Valo for_each_set_bit(tid, &_tids, IWL_MAX_TID_COUNT) { 2474e705c121SKalle Valo struct iwl_mvm_tid_data *tid_data; 2475e705c121SKalle Valo u16 n_queued; 2476e705c121SKalle Valo 2477e705c121SKalle Valo tid_data = &mvmsta->tid_data[tid]; 2478e705c121SKalle Valo if (WARN(tid_data->state != IWL_AGG_ON && 2479e705c121SKalle Valo tid_data->state != IWL_EMPTYING_HW_QUEUE_DELBA, 2480e705c121SKalle Valo "TID %d state is %d\n", 2481e705c121SKalle Valo tid, tid_data->state)) { 2482e705c121SKalle Valo spin_unlock_bh(&mvmsta->lock); 2483e705c121SKalle Valo ieee80211_sta_eosp(sta); 2484e705c121SKalle Valo return; 2485e705c121SKalle Valo } 2486e705c121SKalle Valo 2487e705c121SKalle Valo n_queued = iwl_mvm_tid_queued(tid_data); 2488e705c121SKalle Valo if (n_queued > remaining) { 2489e705c121SKalle Valo more_data = true; 2490e705c121SKalle Valo remaining = 0; 2491e705c121SKalle Valo break; 2492e705c121SKalle Valo } 2493e705c121SKalle Valo remaining -= n_queued; 2494e705c121SKalle Valo } 249536be0eb6SEmmanuel Grumbach sleep_tx_count = cnt - remaining; 249636be0eb6SEmmanuel Grumbach if (reason == IEEE80211_FRAME_RELEASE_UAPSD) 249736be0eb6SEmmanuel Grumbach mvmsta->sleep_tx_count = sleep_tx_count; 2498e705c121SKalle Valo spin_unlock_bh(&mvmsta->lock); 2499e705c121SKalle Valo 250036be0eb6SEmmanuel Grumbach cmd.sleep_tx_count = cpu_to_le16(sleep_tx_count); 2501e705c121SKalle Valo if (WARN_ON(cnt - remaining == 0)) { 2502e705c121SKalle Valo ieee80211_sta_eosp(sta); 2503e705c121SKalle Valo return; 2504e705c121SKalle Valo } 2505e705c121SKalle Valo } 2506e705c121SKalle Valo 2507e705c121SKalle Valo /* Note: this is ignored by firmware not supporting GO uAPSD */ 2508e705c121SKalle Valo if (more_data) 2509e705c121SKalle Valo cmd.sleep_state_flags |= cpu_to_le16(STA_SLEEP_STATE_MOREDATA); 2510e705c121SKalle Valo 2511e705c121SKalle Valo if (reason == IEEE80211_FRAME_RELEASE_PSPOLL) { 2512e705c121SKalle Valo mvmsta->next_status_eosp = true; 2513e705c121SKalle Valo cmd.sleep_state_flags |= cpu_to_le16(STA_SLEEP_STATE_PS_POLL); 2514e705c121SKalle Valo } else { 2515e705c121SKalle Valo cmd.sleep_state_flags |= cpu_to_le16(STA_SLEEP_STATE_UAPSD); 2516e705c121SKalle Valo } 2517e705c121SKalle Valo 2518156f92f2SEmmanuel Grumbach /* block the Tx queues until the FW updated the sleep Tx count */ 2519156f92f2SEmmanuel Grumbach iwl_trans_block_txq_ptrs(mvm->trans, true); 2520156f92f2SEmmanuel Grumbach 2521156f92f2SEmmanuel Grumbach ret = iwl_mvm_send_cmd_pdu(mvm, ADD_STA, 2522156f92f2SEmmanuel Grumbach CMD_ASYNC | CMD_WANT_ASYNC_CALLBACK, 2523854c5705SSara Sharon iwl_mvm_add_sta_cmd_size(mvm), &cmd); 2524e705c121SKalle Valo if (ret) 2525e705c121SKalle Valo IWL_ERR(mvm, "Failed to send ADD_STA command (%d)\n", ret); 2526e705c121SKalle Valo } 2527e705c121SKalle Valo 2528e705c121SKalle Valo void iwl_mvm_rx_eosp_notif(struct iwl_mvm *mvm, 2529e705c121SKalle Valo struct iwl_rx_cmd_buffer *rxb) 2530e705c121SKalle Valo { 2531e705c121SKalle Valo struct iwl_rx_packet *pkt = rxb_addr(rxb); 2532e705c121SKalle Valo struct iwl_mvm_eosp_notification *notif = (void *)pkt->data; 2533e705c121SKalle Valo struct ieee80211_sta *sta; 2534e705c121SKalle Valo u32 sta_id = le32_to_cpu(notif->sta_id); 2535e705c121SKalle Valo 2536e705c121SKalle Valo if (WARN_ON_ONCE(sta_id >= IWL_MVM_STATION_COUNT)) 2537e705c121SKalle Valo return; 2538e705c121SKalle Valo 2539e705c121SKalle Valo rcu_read_lock(); 2540e705c121SKalle Valo sta = rcu_dereference(mvm->fw_id_to_mac_id[sta_id]); 2541e705c121SKalle Valo if (!IS_ERR_OR_NULL(sta)) 2542e705c121SKalle Valo ieee80211_sta_eosp(sta); 2543e705c121SKalle Valo rcu_read_unlock(); 2544e705c121SKalle Valo } 2545e705c121SKalle Valo 2546e705c121SKalle Valo void iwl_mvm_sta_modify_disable_tx(struct iwl_mvm *mvm, 2547e705c121SKalle Valo struct iwl_mvm_sta *mvmsta, bool disable) 2548e705c121SKalle Valo { 2549e705c121SKalle Valo struct iwl_mvm_add_sta_cmd cmd = { 2550e705c121SKalle Valo .add_modify = STA_MODE_MODIFY, 2551e705c121SKalle Valo .sta_id = mvmsta->sta_id, 2552e705c121SKalle Valo .station_flags = disable ? cpu_to_le32(STA_FLG_DISABLE_TX) : 0, 2553e705c121SKalle Valo .station_flags_msk = cpu_to_le32(STA_FLG_DISABLE_TX), 2554e705c121SKalle Valo .mac_id_n_color = cpu_to_le32(mvmsta->mac_id_n_color), 2555e705c121SKalle Valo }; 2556e705c121SKalle Valo int ret; 2557e705c121SKalle Valo 2558854c5705SSara Sharon ret = iwl_mvm_send_cmd_pdu(mvm, ADD_STA, CMD_ASYNC, 2559854c5705SSara Sharon iwl_mvm_add_sta_cmd_size(mvm), &cmd); 2560e705c121SKalle Valo if (ret) 2561e705c121SKalle Valo IWL_ERR(mvm, "Failed to send ADD_STA command (%d)\n", ret); 2562e705c121SKalle Valo } 2563e705c121SKalle Valo 2564e705c121SKalle Valo void iwl_mvm_sta_modify_disable_tx_ap(struct iwl_mvm *mvm, 2565e705c121SKalle Valo struct ieee80211_sta *sta, 2566e705c121SKalle Valo bool disable) 2567e705c121SKalle Valo { 2568e705c121SKalle Valo struct iwl_mvm_sta *mvm_sta = iwl_mvm_sta_from_mac80211(sta); 2569e705c121SKalle Valo 2570e705c121SKalle Valo spin_lock_bh(&mvm_sta->lock); 2571e705c121SKalle Valo 2572e705c121SKalle Valo if (mvm_sta->disable_tx == disable) { 2573e705c121SKalle Valo spin_unlock_bh(&mvm_sta->lock); 2574e705c121SKalle Valo return; 2575e705c121SKalle Valo } 2576e705c121SKalle Valo 2577e705c121SKalle Valo mvm_sta->disable_tx = disable; 2578e705c121SKalle Valo 2579e705c121SKalle Valo /* 2580e705c121SKalle Valo * Tell mac80211 to start/stop queuing tx for this station, 2581e705c121SKalle Valo * but don't stop queuing if there are still pending frames 2582e705c121SKalle Valo * for this station. 2583e705c121SKalle Valo */ 2584e705c121SKalle Valo if (disable || !atomic_read(&mvm->pending_frames[mvm_sta->sta_id])) 2585e705c121SKalle Valo ieee80211_sta_block_awake(mvm->hw, sta, disable); 2586e705c121SKalle Valo 2587e705c121SKalle Valo iwl_mvm_sta_modify_disable_tx(mvm, mvm_sta, disable); 2588e705c121SKalle Valo 2589e705c121SKalle Valo spin_unlock_bh(&mvm_sta->lock); 2590e705c121SKalle Valo } 2591e705c121SKalle Valo 2592e705c121SKalle Valo void iwl_mvm_modify_all_sta_disable_tx(struct iwl_mvm *mvm, 2593e705c121SKalle Valo struct iwl_mvm_vif *mvmvif, 2594e705c121SKalle Valo bool disable) 2595e705c121SKalle Valo { 2596e705c121SKalle Valo struct ieee80211_sta *sta; 2597e705c121SKalle Valo struct iwl_mvm_sta *mvm_sta; 2598e705c121SKalle Valo int i; 2599e705c121SKalle Valo 2600e705c121SKalle Valo lockdep_assert_held(&mvm->mutex); 2601e705c121SKalle Valo 2602e705c121SKalle Valo /* Block/unblock all the stations of the given mvmvif */ 2603e705c121SKalle Valo for (i = 0; i < IWL_MVM_STATION_COUNT; i++) { 2604e705c121SKalle Valo sta = rcu_dereference_protected(mvm->fw_id_to_mac_id[i], 2605e705c121SKalle Valo lockdep_is_held(&mvm->mutex)); 2606e705c121SKalle Valo if (IS_ERR_OR_NULL(sta)) 2607e705c121SKalle Valo continue; 2608e705c121SKalle Valo 2609e705c121SKalle Valo mvm_sta = iwl_mvm_sta_from_mac80211(sta); 2610e705c121SKalle Valo if (mvm_sta->mac_id_n_color != 2611e705c121SKalle Valo FW_CMD_ID_AND_COLOR(mvmvif->id, mvmvif->color)) 2612e705c121SKalle Valo continue; 2613e705c121SKalle Valo 2614e705c121SKalle Valo iwl_mvm_sta_modify_disable_tx_ap(mvm, sta, disable); 2615e705c121SKalle Valo } 2616e705c121SKalle Valo } 2617e705c121SKalle Valo 2618e705c121SKalle Valo void iwl_mvm_csa_client_absent(struct iwl_mvm *mvm, struct ieee80211_vif *vif) 2619e705c121SKalle Valo { 2620e705c121SKalle Valo struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 2621e705c121SKalle Valo struct iwl_mvm_sta *mvmsta; 2622e705c121SKalle Valo 2623e705c121SKalle Valo rcu_read_lock(); 2624e705c121SKalle Valo 2625e705c121SKalle Valo mvmsta = iwl_mvm_sta_from_staid_rcu(mvm, mvmvif->ap_sta_id); 2626e705c121SKalle Valo 2627e705c121SKalle Valo if (!WARN_ON(!mvmsta)) 2628e705c121SKalle Valo iwl_mvm_sta_modify_disable_tx(mvm, mvmsta, true); 2629e705c121SKalle Valo 2630e705c121SKalle Valo rcu_read_unlock(); 2631e705c121SKalle Valo } 2632