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 1026d6c16bSSara Sharon * Copyright(c) 2016 - 2017 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 3726d6c16bSSara Sharon * Copyright(c) 2016 - 2017 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 */ 1010ae98812SSara Sharon for (sta_id = 0; sta_id < ARRAY_SIZE(mvm->fw_id_to_mac_id); 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 } 1090ae98812SSara Sharon return IWL_MVM_INVALID_STA; 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 memcpy(&add_sta_cmd.addr, sta->addr, ETH_ALEN); 13124afba76SLiad Kaufman 132bb49701bSSara Sharon if (!iwl_mvm_has_new_tx_api(mvm)) { 133bb49701bSSara Sharon add_sta_cmd.tfd_queue_msk = 134bb49701bSSara Sharon cpu_to_le32(mvm_sta->tfd_queue_msk); 135bb49701bSSara Sharon 13624afba76SLiad Kaufman if (flags & STA_MODIFY_QUEUES) 13724afba76SLiad Kaufman add_sta_cmd.modify_mask |= STA_MODIFY_QUEUES; 138bb49701bSSara Sharon } else { 139bb49701bSSara Sharon WARN_ON(flags & STA_MODIFY_QUEUES); 140bb49701bSSara Sharon } 141e705c121SKalle Valo } 142e705c121SKalle Valo 143e705c121SKalle Valo switch (sta->bandwidth) { 144e705c121SKalle Valo case IEEE80211_STA_RX_BW_160: 145e705c121SKalle Valo add_sta_cmd.station_flags |= cpu_to_le32(STA_FLG_FAT_EN_160MHZ); 146e705c121SKalle Valo /* fall through */ 147e705c121SKalle Valo case IEEE80211_STA_RX_BW_80: 148e705c121SKalle Valo add_sta_cmd.station_flags |= cpu_to_le32(STA_FLG_FAT_EN_80MHZ); 149e705c121SKalle Valo /* fall through */ 150e705c121SKalle Valo case IEEE80211_STA_RX_BW_40: 151e705c121SKalle Valo add_sta_cmd.station_flags |= cpu_to_le32(STA_FLG_FAT_EN_40MHZ); 152e705c121SKalle Valo /* fall through */ 153e705c121SKalle Valo case IEEE80211_STA_RX_BW_20: 154e705c121SKalle Valo if (sta->ht_cap.ht_supported) 155e705c121SKalle Valo add_sta_cmd.station_flags |= 156e705c121SKalle Valo cpu_to_le32(STA_FLG_FAT_EN_20MHZ); 157e705c121SKalle Valo break; 158e705c121SKalle Valo } 159e705c121SKalle Valo 160e705c121SKalle Valo switch (sta->rx_nss) { 161e705c121SKalle Valo case 1: 162e705c121SKalle Valo add_sta_cmd.station_flags |= cpu_to_le32(STA_FLG_MIMO_EN_SISO); 163e705c121SKalle Valo break; 164e705c121SKalle Valo case 2: 165e705c121SKalle Valo add_sta_cmd.station_flags |= cpu_to_le32(STA_FLG_MIMO_EN_MIMO2); 166e705c121SKalle Valo break; 167e705c121SKalle Valo case 3 ... 8: 168e705c121SKalle Valo add_sta_cmd.station_flags |= cpu_to_le32(STA_FLG_MIMO_EN_MIMO3); 169e705c121SKalle Valo break; 170e705c121SKalle Valo } 171e705c121SKalle Valo 172e705c121SKalle Valo switch (sta->smps_mode) { 173e705c121SKalle Valo case IEEE80211_SMPS_AUTOMATIC: 174e705c121SKalle Valo case IEEE80211_SMPS_NUM_MODES: 175e705c121SKalle Valo WARN_ON(1); 176e705c121SKalle Valo break; 177e705c121SKalle Valo case IEEE80211_SMPS_STATIC: 178e705c121SKalle Valo /* override NSS */ 179e705c121SKalle Valo add_sta_cmd.station_flags &= ~cpu_to_le32(STA_FLG_MIMO_EN_MSK); 180e705c121SKalle Valo add_sta_cmd.station_flags |= cpu_to_le32(STA_FLG_MIMO_EN_SISO); 181e705c121SKalle Valo break; 182e705c121SKalle Valo case IEEE80211_SMPS_DYNAMIC: 183e705c121SKalle Valo add_sta_cmd.station_flags |= cpu_to_le32(STA_FLG_RTS_MIMO_PROT); 184e705c121SKalle Valo break; 185e705c121SKalle Valo case IEEE80211_SMPS_OFF: 186e705c121SKalle Valo /* nothing */ 187e705c121SKalle Valo break; 188e705c121SKalle Valo } 189e705c121SKalle Valo 190e705c121SKalle Valo if (sta->ht_cap.ht_supported) { 191e705c121SKalle Valo add_sta_cmd.station_flags_msk |= 192e705c121SKalle Valo cpu_to_le32(STA_FLG_MAX_AGG_SIZE_MSK | 193e705c121SKalle Valo STA_FLG_AGG_MPDU_DENS_MSK); 194e705c121SKalle Valo 195e705c121SKalle Valo mpdu_dens = sta->ht_cap.ampdu_density; 196e705c121SKalle Valo } 197e705c121SKalle Valo 198e705c121SKalle Valo if (sta->vht_cap.vht_supported) { 199e705c121SKalle Valo agg_size = sta->vht_cap.cap & 200e705c121SKalle Valo IEEE80211_VHT_CAP_MAX_A_MPDU_LENGTH_EXPONENT_MASK; 201e705c121SKalle Valo agg_size >>= 202e705c121SKalle Valo IEEE80211_VHT_CAP_MAX_A_MPDU_LENGTH_EXPONENT_SHIFT; 203e705c121SKalle Valo } else if (sta->ht_cap.ht_supported) { 204e705c121SKalle Valo agg_size = sta->ht_cap.ampdu_factor; 205e705c121SKalle Valo } 206e705c121SKalle Valo 207e705c121SKalle Valo add_sta_cmd.station_flags |= 208e705c121SKalle Valo cpu_to_le32(agg_size << STA_FLG_MAX_AGG_SIZE_SHIFT); 209e705c121SKalle Valo add_sta_cmd.station_flags |= 210e705c121SKalle Valo cpu_to_le32(mpdu_dens << STA_FLG_AGG_MPDU_DENS_SHIFT); 2116ea29ce5SJohannes Berg if (mvm_sta->associated) 21219c52f46SEmmanuel Grumbach add_sta_cmd.assoc_id = cpu_to_le16(sta->aid); 213e705c121SKalle Valo 21465e25482SJohannes Berg if (sta->wme) { 21565e25482SJohannes Berg add_sta_cmd.modify_mask |= STA_MODIFY_UAPSD_ACS; 21665e25482SJohannes Berg 21765e25482SJohannes Berg if (sta->uapsd_queues & IEEE80211_WMM_IE_STA_QOSINFO_AC_BK) 218c80eb570SEmmanuel Grumbach add_sta_cmd.uapsd_acs |= BIT(AC_BK); 21965e25482SJohannes Berg if (sta->uapsd_queues & IEEE80211_WMM_IE_STA_QOSINFO_AC_BE) 220c80eb570SEmmanuel Grumbach add_sta_cmd.uapsd_acs |= BIT(AC_BE); 22165e25482SJohannes Berg if (sta->uapsd_queues & IEEE80211_WMM_IE_STA_QOSINFO_AC_VI) 222c80eb570SEmmanuel Grumbach add_sta_cmd.uapsd_acs |= BIT(AC_VI); 22365e25482SJohannes Berg if (sta->uapsd_queues & IEEE80211_WMM_IE_STA_QOSINFO_AC_VO) 224c80eb570SEmmanuel Grumbach add_sta_cmd.uapsd_acs |= BIT(AC_VO); 225c80eb570SEmmanuel Grumbach add_sta_cmd.uapsd_acs |= add_sta_cmd.uapsd_acs << 4; 226c80eb570SEmmanuel Grumbach add_sta_cmd.sp_length = sta->max_sp; 22765e25482SJohannes Berg } 22865e25482SJohannes Berg 229e705c121SKalle Valo status = ADD_STA_SUCCESS; 230854c5705SSara Sharon ret = iwl_mvm_send_cmd_pdu_status(mvm, ADD_STA, 231854c5705SSara Sharon iwl_mvm_add_sta_cmd_size(mvm), 232e705c121SKalle Valo &add_sta_cmd, &status); 233e705c121SKalle Valo if (ret) 234e705c121SKalle Valo return ret; 235e705c121SKalle Valo 236837c4da9SSara Sharon switch (status & IWL_ADD_STA_STATUS_MASK) { 237e705c121SKalle Valo case ADD_STA_SUCCESS: 238e705c121SKalle Valo IWL_DEBUG_ASSOC(mvm, "ADD_STA PASSED\n"); 239e705c121SKalle Valo break; 240e705c121SKalle Valo default: 241e705c121SKalle Valo ret = -EIO; 242e705c121SKalle Valo IWL_ERR(mvm, "ADD_STA failed\n"); 243e705c121SKalle Valo break; 244e705c121SKalle Valo } 245e705c121SKalle Valo 246e705c121SKalle Valo return ret; 247e705c121SKalle Valo } 248e705c121SKalle Valo 24910b2b201SSara Sharon static void iwl_mvm_rx_agg_session_expired(unsigned long data) 25010b2b201SSara Sharon { 25110b2b201SSara Sharon struct iwl_mvm_baid_data __rcu **rcu_ptr = (void *)data; 25210b2b201SSara Sharon struct iwl_mvm_baid_data *ba_data; 25310b2b201SSara Sharon struct ieee80211_sta *sta; 25410b2b201SSara Sharon struct iwl_mvm_sta *mvm_sta; 25510b2b201SSara Sharon unsigned long timeout; 25610b2b201SSara Sharon 25710b2b201SSara Sharon rcu_read_lock(); 25810b2b201SSara Sharon 25910b2b201SSara Sharon ba_data = rcu_dereference(*rcu_ptr); 26010b2b201SSara Sharon 26110b2b201SSara Sharon if (WARN_ON(!ba_data)) 26210b2b201SSara Sharon goto unlock; 26310b2b201SSara Sharon 26410b2b201SSara Sharon if (!ba_data->timeout) 26510b2b201SSara Sharon goto unlock; 26610b2b201SSara Sharon 26710b2b201SSara Sharon timeout = ba_data->last_rx + TU_TO_JIFFIES(ba_data->timeout * 2); 26810b2b201SSara Sharon if (time_is_after_jiffies(timeout)) { 26910b2b201SSara Sharon mod_timer(&ba_data->session_timer, timeout); 27010b2b201SSara Sharon goto unlock; 27110b2b201SSara Sharon } 27210b2b201SSara Sharon 27310b2b201SSara Sharon /* Timer expired */ 27410b2b201SSara Sharon sta = rcu_dereference(ba_data->mvm->fw_id_to_mac_id[ba_data->sta_id]); 27510b2b201SSara Sharon mvm_sta = iwl_mvm_sta_from_mac80211(sta); 27610b2b201SSara Sharon ieee80211_stop_rx_ba_session_offl(mvm_sta->vif, 27710b2b201SSara Sharon sta->addr, ba_data->tid); 27810b2b201SSara Sharon unlock: 27910b2b201SSara Sharon rcu_read_unlock(); 28010b2b201SSara Sharon } 28110b2b201SSara Sharon 282e705c121SKalle Valo static int iwl_mvm_tdls_sta_init(struct iwl_mvm *mvm, 283e705c121SKalle Valo struct ieee80211_sta *sta) 284e705c121SKalle Valo { 285e705c121SKalle Valo unsigned long used_hw_queues; 286e705c121SKalle Valo struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta); 287e705c121SKalle Valo unsigned int wdg_timeout = 288e705c121SKalle Valo iwl_mvm_get_wd_timeout(mvm, NULL, true, false); 289e705c121SKalle Valo u32 ac; 290e705c121SKalle Valo 291e705c121SKalle Valo lockdep_assert_held(&mvm->mutex); 292e705c121SKalle Valo 293e705c121SKalle Valo used_hw_queues = iwl_mvm_get_used_hw_queues(mvm, NULL); 294e705c121SKalle Valo 295e705c121SKalle Valo /* Find available queues, and allocate them to the ACs */ 296e705c121SKalle Valo for (ac = 0; ac < IEEE80211_NUM_ACS; ac++) { 297e705c121SKalle Valo u8 queue = find_first_zero_bit(&used_hw_queues, 298e705c121SKalle Valo mvm->first_agg_queue); 299e705c121SKalle Valo 300e705c121SKalle Valo if (queue >= mvm->first_agg_queue) { 301e705c121SKalle Valo IWL_ERR(mvm, "Failed to allocate STA queue\n"); 302e705c121SKalle Valo return -EBUSY; 303e705c121SKalle Valo } 304e705c121SKalle Valo 305e705c121SKalle Valo __set_bit(queue, &used_hw_queues); 306e705c121SKalle Valo mvmsta->hw_queue[ac] = queue; 307e705c121SKalle Valo } 308e705c121SKalle Valo 309e705c121SKalle Valo /* Found a place for all queues - enable them */ 310e705c121SKalle Valo for (ac = 0; ac < IEEE80211_NUM_ACS; ac++) { 311e705c121SKalle Valo iwl_mvm_enable_ac_txq(mvm, mvmsta->hw_queue[ac], 312e705c121SKalle Valo mvmsta->hw_queue[ac], 313e705c121SKalle Valo iwl_mvm_ac_to_tx_fifo[ac], 0, 314e705c121SKalle Valo wdg_timeout); 315e705c121SKalle Valo mvmsta->tfd_queue_msk |= BIT(mvmsta->hw_queue[ac]); 316e705c121SKalle Valo } 317e705c121SKalle Valo 318e705c121SKalle Valo return 0; 319e705c121SKalle Valo } 320e705c121SKalle Valo 321e705c121SKalle Valo static void iwl_mvm_tdls_sta_deinit(struct iwl_mvm *mvm, 322e705c121SKalle Valo struct ieee80211_sta *sta) 323e705c121SKalle Valo { 324e705c121SKalle Valo struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta); 325e705c121SKalle Valo unsigned long sta_msk; 326e705c121SKalle Valo int i; 327e705c121SKalle Valo 328e705c121SKalle Valo lockdep_assert_held(&mvm->mutex); 329e705c121SKalle Valo 330e705c121SKalle Valo /* disable the TDLS STA-specific queues */ 331e705c121SKalle Valo sta_msk = mvmsta->tfd_queue_msk; 332e705c121SKalle Valo for_each_set_bit(i, &sta_msk, sizeof(sta_msk) * BITS_PER_BYTE) 333e705c121SKalle Valo iwl_mvm_disable_txq(mvm, i, i, IWL_MAX_TID_COUNT, 0); 334e705c121SKalle Valo } 335e705c121SKalle Valo 3369794c64fSLiad Kaufman /* Disable aggregations for a bitmap of TIDs for a given station */ 3379794c64fSLiad Kaufman static int iwl_mvm_invalidate_sta_queue(struct iwl_mvm *mvm, int queue, 3389794c64fSLiad Kaufman unsigned long disable_agg_tids, 3399794c64fSLiad Kaufman bool remove_queue) 3409794c64fSLiad Kaufman { 3419794c64fSLiad Kaufman struct iwl_mvm_add_sta_cmd cmd = {}; 3429794c64fSLiad Kaufman struct ieee80211_sta *sta; 3439794c64fSLiad Kaufman struct iwl_mvm_sta *mvmsta; 3449794c64fSLiad Kaufman u32 status; 3459794c64fSLiad Kaufman u8 sta_id; 3469794c64fSLiad Kaufman int ret; 3479794c64fSLiad Kaufman 348bb49701bSSara Sharon if (WARN_ON(iwl_mvm_has_new_tx_api(mvm))) 349bb49701bSSara Sharon return -EINVAL; 350bb49701bSSara Sharon 3519794c64fSLiad Kaufman spin_lock_bh(&mvm->queue_info_lock); 3529794c64fSLiad Kaufman sta_id = mvm->queue_info[queue].ra_sta_id; 3539794c64fSLiad Kaufman spin_unlock_bh(&mvm->queue_info_lock); 3549794c64fSLiad Kaufman 3559794c64fSLiad Kaufman rcu_read_lock(); 3569794c64fSLiad Kaufman 3579794c64fSLiad Kaufman sta = rcu_dereference(mvm->fw_id_to_mac_id[sta_id]); 3589794c64fSLiad Kaufman 3599794c64fSLiad Kaufman if (WARN_ON_ONCE(IS_ERR_OR_NULL(sta))) { 3609794c64fSLiad Kaufman rcu_read_unlock(); 3619794c64fSLiad Kaufman return -EINVAL; 3629794c64fSLiad Kaufman } 3639794c64fSLiad Kaufman 3649794c64fSLiad Kaufman mvmsta = iwl_mvm_sta_from_mac80211(sta); 3659794c64fSLiad Kaufman 3669794c64fSLiad Kaufman mvmsta->tid_disable_agg |= disable_agg_tids; 3679794c64fSLiad Kaufman 3689794c64fSLiad Kaufman cmd.mac_id_n_color = cpu_to_le32(mvmsta->mac_id_n_color); 3699794c64fSLiad Kaufman cmd.sta_id = mvmsta->sta_id; 3709794c64fSLiad Kaufman cmd.add_modify = STA_MODE_MODIFY; 3719794c64fSLiad Kaufman cmd.modify_mask = STA_MODIFY_QUEUES; 3729794c64fSLiad Kaufman if (disable_agg_tids) 3739794c64fSLiad Kaufman cmd.modify_mask |= STA_MODIFY_TID_DISABLE_TX; 3749794c64fSLiad Kaufman if (remove_queue) 3759794c64fSLiad Kaufman cmd.modify_mask |= STA_MODIFY_QUEUE_REMOVAL; 3769794c64fSLiad Kaufman cmd.tfd_queue_msk = cpu_to_le32(mvmsta->tfd_queue_msk); 3779794c64fSLiad Kaufman cmd.tid_disable_tx = cpu_to_le16(mvmsta->tid_disable_agg); 3789794c64fSLiad Kaufman 3799794c64fSLiad Kaufman rcu_read_unlock(); 3809794c64fSLiad Kaufman 3819794c64fSLiad Kaufman /* Notify FW of queue removal from the STA queues */ 3829794c64fSLiad Kaufman status = ADD_STA_SUCCESS; 3839794c64fSLiad Kaufman ret = iwl_mvm_send_cmd_pdu_status(mvm, ADD_STA, 3849794c64fSLiad Kaufman iwl_mvm_add_sta_cmd_size(mvm), 3859794c64fSLiad Kaufman &cmd, &status); 3869794c64fSLiad Kaufman 3879794c64fSLiad Kaufman return ret; 3889794c64fSLiad Kaufman } 3899794c64fSLiad Kaufman 39042db09c1SLiad Kaufman static int iwl_mvm_get_queue_agg_tids(struct iwl_mvm *mvm, int queue) 39142db09c1SLiad Kaufman { 39242db09c1SLiad Kaufman struct ieee80211_sta *sta; 39342db09c1SLiad Kaufman struct iwl_mvm_sta *mvmsta; 39442db09c1SLiad Kaufman unsigned long tid_bitmap; 39542db09c1SLiad Kaufman unsigned long agg_tids = 0; 39642db09c1SLiad Kaufman s8 sta_id; 39742db09c1SLiad Kaufman int tid; 39842db09c1SLiad Kaufman 39942db09c1SLiad Kaufman lockdep_assert_held(&mvm->mutex); 40042db09c1SLiad Kaufman 401bb49701bSSara Sharon if (WARN_ON(iwl_mvm_has_new_tx_api(mvm))) 402bb49701bSSara Sharon return -EINVAL; 403bb49701bSSara Sharon 40442db09c1SLiad Kaufman spin_lock_bh(&mvm->queue_info_lock); 40542db09c1SLiad Kaufman sta_id = mvm->queue_info[queue].ra_sta_id; 40642db09c1SLiad Kaufman tid_bitmap = mvm->queue_info[queue].tid_bitmap; 40742db09c1SLiad Kaufman spin_unlock_bh(&mvm->queue_info_lock); 40842db09c1SLiad Kaufman 40942db09c1SLiad Kaufman sta = rcu_dereference_protected(mvm->fw_id_to_mac_id[sta_id], 41042db09c1SLiad Kaufman lockdep_is_held(&mvm->mutex)); 41142db09c1SLiad Kaufman 41242db09c1SLiad Kaufman if (WARN_ON_ONCE(IS_ERR_OR_NULL(sta))) 41342db09c1SLiad Kaufman return -EINVAL; 41442db09c1SLiad Kaufman 41542db09c1SLiad Kaufman mvmsta = iwl_mvm_sta_from_mac80211(sta); 41642db09c1SLiad Kaufman 41742db09c1SLiad Kaufman spin_lock_bh(&mvmsta->lock); 41842db09c1SLiad Kaufman for_each_set_bit(tid, &tid_bitmap, IWL_MAX_TID_COUNT + 1) { 41942db09c1SLiad Kaufman if (mvmsta->tid_data[tid].state == IWL_AGG_ON) 42042db09c1SLiad Kaufman agg_tids |= BIT(tid); 42142db09c1SLiad Kaufman } 42242db09c1SLiad Kaufman spin_unlock_bh(&mvmsta->lock); 42342db09c1SLiad Kaufman 42442db09c1SLiad Kaufman return agg_tids; 42542db09c1SLiad Kaufman } 42642db09c1SLiad Kaufman 4279794c64fSLiad Kaufman /* 4289794c64fSLiad Kaufman * Remove a queue from a station's resources. 4299794c64fSLiad Kaufman * Note that this only marks as free. It DOESN'T delete a BA agreement, and 4309794c64fSLiad Kaufman * doesn't disable the queue 4319794c64fSLiad Kaufman */ 4329794c64fSLiad Kaufman static int iwl_mvm_remove_sta_queue_marking(struct iwl_mvm *mvm, int queue) 4339794c64fSLiad Kaufman { 4349794c64fSLiad Kaufman struct ieee80211_sta *sta; 4359794c64fSLiad Kaufman struct iwl_mvm_sta *mvmsta; 4369794c64fSLiad Kaufman unsigned long tid_bitmap; 4379794c64fSLiad Kaufman unsigned long disable_agg_tids = 0; 4389794c64fSLiad Kaufman u8 sta_id; 4399794c64fSLiad Kaufman int tid; 4409794c64fSLiad Kaufman 4419794c64fSLiad Kaufman lockdep_assert_held(&mvm->mutex); 4429794c64fSLiad Kaufman 443bb49701bSSara Sharon if (WARN_ON(iwl_mvm_has_new_tx_api(mvm))) 444bb49701bSSara Sharon return -EINVAL; 445bb49701bSSara Sharon 4469794c64fSLiad Kaufman spin_lock_bh(&mvm->queue_info_lock); 4479794c64fSLiad Kaufman sta_id = mvm->queue_info[queue].ra_sta_id; 4489794c64fSLiad Kaufman tid_bitmap = mvm->queue_info[queue].tid_bitmap; 4499794c64fSLiad Kaufman spin_unlock_bh(&mvm->queue_info_lock); 4509794c64fSLiad Kaufman 4519794c64fSLiad Kaufman rcu_read_lock(); 4529794c64fSLiad Kaufman 4539794c64fSLiad Kaufman sta = rcu_dereference(mvm->fw_id_to_mac_id[sta_id]); 4549794c64fSLiad Kaufman 4559794c64fSLiad Kaufman if (WARN_ON_ONCE(IS_ERR_OR_NULL(sta))) { 4569794c64fSLiad Kaufman rcu_read_unlock(); 4579794c64fSLiad Kaufman return 0; 4589794c64fSLiad Kaufman } 4599794c64fSLiad Kaufman 4609794c64fSLiad Kaufman mvmsta = iwl_mvm_sta_from_mac80211(sta); 4619794c64fSLiad Kaufman 4629794c64fSLiad Kaufman spin_lock_bh(&mvmsta->lock); 46342db09c1SLiad Kaufman /* Unmap MAC queues and TIDs from this queue */ 4649794c64fSLiad Kaufman for_each_set_bit(tid, &tid_bitmap, IWL_MAX_TID_COUNT + 1) { 4659794c64fSLiad Kaufman if (mvmsta->tid_data[tid].state == IWL_AGG_ON) 4669794c64fSLiad Kaufman disable_agg_tids |= BIT(tid); 46742db09c1SLiad Kaufman mvmsta->tid_data[tid].txq_id = IEEE80211_INVAL_HW_QUEUE; 4689794c64fSLiad Kaufman } 4699794c64fSLiad Kaufman 47042db09c1SLiad Kaufman mvmsta->tfd_queue_msk &= ~BIT(queue); /* Don't use this queue anymore */ 4719794c64fSLiad Kaufman spin_unlock_bh(&mvmsta->lock); 4729794c64fSLiad Kaufman 4739794c64fSLiad Kaufman rcu_read_unlock(); 4749794c64fSLiad Kaufman 4759794c64fSLiad Kaufman return disable_agg_tids; 4769794c64fSLiad Kaufman } 4779794c64fSLiad Kaufman 47801796ff2SSara Sharon static int iwl_mvm_free_inactive_queue(struct iwl_mvm *mvm, int queue, 47901796ff2SSara Sharon bool same_sta) 48001796ff2SSara Sharon { 48101796ff2SSara Sharon struct iwl_mvm_sta *mvmsta; 48201796ff2SSara Sharon u8 txq_curr_ac, sta_id, tid; 48301796ff2SSara Sharon unsigned long disable_agg_tids = 0; 48401796ff2SSara Sharon int ret; 48501796ff2SSara Sharon 48601796ff2SSara Sharon lockdep_assert_held(&mvm->mutex); 48701796ff2SSara Sharon 488bb49701bSSara Sharon if (WARN_ON(iwl_mvm_has_new_tx_api(mvm))) 489bb49701bSSara Sharon return -EINVAL; 490bb49701bSSara Sharon 49101796ff2SSara Sharon spin_lock_bh(&mvm->queue_info_lock); 49201796ff2SSara Sharon txq_curr_ac = mvm->queue_info[queue].mac80211_ac; 49301796ff2SSara Sharon sta_id = mvm->queue_info[queue].ra_sta_id; 49401796ff2SSara Sharon tid = mvm->queue_info[queue].txq_tid; 49501796ff2SSara Sharon spin_unlock_bh(&mvm->queue_info_lock); 49601796ff2SSara Sharon 49701796ff2SSara Sharon mvmsta = iwl_mvm_sta_from_staid_protected(mvm, sta_id); 49801796ff2SSara Sharon 49901796ff2SSara Sharon disable_agg_tids = iwl_mvm_remove_sta_queue_marking(mvm, queue); 50001796ff2SSara Sharon /* Disable the queue */ 50101796ff2SSara Sharon if (disable_agg_tids) 50201796ff2SSara Sharon iwl_mvm_invalidate_sta_queue(mvm, queue, 50301796ff2SSara Sharon disable_agg_tids, false); 50401796ff2SSara Sharon 50501796ff2SSara Sharon ret = iwl_mvm_disable_txq(mvm, queue, 50601796ff2SSara Sharon mvmsta->vif->hw_queue[txq_curr_ac], 50701796ff2SSara Sharon tid, 0); 50801796ff2SSara Sharon if (ret) { 50901796ff2SSara Sharon /* Re-mark the inactive queue as inactive */ 51001796ff2SSara Sharon spin_lock_bh(&mvm->queue_info_lock); 51101796ff2SSara Sharon mvm->queue_info[queue].status = IWL_MVM_QUEUE_INACTIVE; 51201796ff2SSara Sharon spin_unlock_bh(&mvm->queue_info_lock); 51301796ff2SSara Sharon IWL_ERR(mvm, 51401796ff2SSara Sharon "Failed to free inactive queue %d (ret=%d)\n", 51501796ff2SSara Sharon queue, ret); 51601796ff2SSara Sharon 51701796ff2SSara Sharon return ret; 51801796ff2SSara Sharon } 51901796ff2SSara Sharon 52001796ff2SSara Sharon /* If TXQ is allocated to another STA, update removal in FW */ 52101796ff2SSara Sharon if (!same_sta) 52201796ff2SSara Sharon iwl_mvm_invalidate_sta_queue(mvm, queue, 0, true); 52301796ff2SSara Sharon 52401796ff2SSara Sharon return 0; 52501796ff2SSara Sharon } 52601796ff2SSara Sharon 52742db09c1SLiad Kaufman static int iwl_mvm_get_shared_queue(struct iwl_mvm *mvm, 52842db09c1SLiad Kaufman unsigned long tfd_queue_mask, u8 ac) 52942db09c1SLiad Kaufman { 53042db09c1SLiad Kaufman int queue = 0; 53142db09c1SLiad Kaufman u8 ac_to_queue[IEEE80211_NUM_ACS]; 53242db09c1SLiad Kaufman int i; 53342db09c1SLiad Kaufman 53442db09c1SLiad Kaufman lockdep_assert_held(&mvm->queue_info_lock); 535bb49701bSSara Sharon if (WARN_ON(iwl_mvm_has_new_tx_api(mvm))) 536bb49701bSSara Sharon return -EINVAL; 53742db09c1SLiad Kaufman 53842db09c1SLiad Kaufman memset(&ac_to_queue, IEEE80211_INVAL_HW_QUEUE, sizeof(ac_to_queue)); 53942db09c1SLiad Kaufman 54042db09c1SLiad Kaufman /* See what ACs the existing queues for this STA have */ 54142db09c1SLiad Kaufman for_each_set_bit(i, &tfd_queue_mask, IWL_MVM_DQA_MAX_DATA_QUEUE) { 54242db09c1SLiad Kaufman /* Only DATA queues can be shared */ 54342db09c1SLiad Kaufman if (i < IWL_MVM_DQA_MIN_DATA_QUEUE && 54442db09c1SLiad Kaufman i != IWL_MVM_DQA_BSS_CLIENT_QUEUE) 54542db09c1SLiad Kaufman continue; 54642db09c1SLiad Kaufman 5479f9af3d7SLiad Kaufman /* Don't try and take queues being reconfigured */ 5489f9af3d7SLiad Kaufman if (mvm->queue_info[queue].status == 5499f9af3d7SLiad Kaufman IWL_MVM_QUEUE_RECONFIGURING) 5509f9af3d7SLiad Kaufman continue; 5519f9af3d7SLiad Kaufman 55242db09c1SLiad Kaufman ac_to_queue[mvm->queue_info[i].mac80211_ac] = i; 55342db09c1SLiad Kaufman } 55442db09c1SLiad Kaufman 55542db09c1SLiad Kaufman /* 55642db09c1SLiad Kaufman * The queue to share is chosen only from DATA queues as follows (in 55742db09c1SLiad Kaufman * descending priority): 55842db09c1SLiad Kaufman * 1. An AC_BE queue 55942db09c1SLiad Kaufman * 2. Same AC queue 56042db09c1SLiad Kaufman * 3. Highest AC queue that is lower than new AC 56142db09c1SLiad Kaufman * 4. Any existing AC (there always is at least 1 DATA queue) 56242db09c1SLiad Kaufman */ 56342db09c1SLiad Kaufman 56442db09c1SLiad Kaufman /* Priority 1: An AC_BE queue */ 56542db09c1SLiad Kaufman if (ac_to_queue[IEEE80211_AC_BE] != IEEE80211_INVAL_HW_QUEUE) 56642db09c1SLiad Kaufman queue = ac_to_queue[IEEE80211_AC_BE]; 56742db09c1SLiad Kaufman /* Priority 2: Same AC queue */ 56842db09c1SLiad Kaufman else if (ac_to_queue[ac] != IEEE80211_INVAL_HW_QUEUE) 56942db09c1SLiad Kaufman queue = ac_to_queue[ac]; 57042db09c1SLiad Kaufman /* Priority 3a: If new AC is VO and VI exists - use VI */ 57142db09c1SLiad Kaufman else if (ac == IEEE80211_AC_VO && 57242db09c1SLiad Kaufman ac_to_queue[IEEE80211_AC_VI] != IEEE80211_INVAL_HW_QUEUE) 57342db09c1SLiad Kaufman queue = ac_to_queue[IEEE80211_AC_VI]; 57442db09c1SLiad Kaufman /* Priority 3b: No BE so only AC less than the new one is BK */ 57542db09c1SLiad Kaufman else if (ac_to_queue[IEEE80211_AC_BK] != IEEE80211_INVAL_HW_QUEUE) 57642db09c1SLiad Kaufman queue = ac_to_queue[IEEE80211_AC_BK]; 57742db09c1SLiad Kaufman /* Priority 4a: No BE nor BK - use VI if exists */ 57842db09c1SLiad Kaufman else if (ac_to_queue[IEEE80211_AC_VI] != IEEE80211_INVAL_HW_QUEUE) 57942db09c1SLiad Kaufman queue = ac_to_queue[IEEE80211_AC_VI]; 58042db09c1SLiad Kaufman /* Priority 4b: No BE, BK nor VI - use VO if exists */ 58142db09c1SLiad Kaufman else if (ac_to_queue[IEEE80211_AC_VO] != IEEE80211_INVAL_HW_QUEUE) 58242db09c1SLiad Kaufman queue = ac_to_queue[IEEE80211_AC_VO]; 58342db09c1SLiad Kaufman 58442db09c1SLiad Kaufman /* Make sure queue found (or not) is legal */ 5859f9af3d7SLiad Kaufman if (!iwl_mvm_is_dqa_data_queue(mvm, queue) && 5869f9af3d7SLiad Kaufman !iwl_mvm_is_dqa_mgmt_queue(mvm, queue) && 5879f9af3d7SLiad Kaufman (queue != IWL_MVM_DQA_BSS_CLIENT_QUEUE)) { 58842db09c1SLiad Kaufman IWL_ERR(mvm, "No DATA queues available to share\n"); 5899f9af3d7SLiad Kaufman return -ENOSPC; 5909f9af3d7SLiad Kaufman } 5919f9af3d7SLiad Kaufman 5929f9af3d7SLiad Kaufman /* Make sure the queue isn't in the middle of being reconfigured */ 5939f9af3d7SLiad Kaufman if (mvm->queue_info[queue].status == IWL_MVM_QUEUE_RECONFIGURING) { 5949f9af3d7SLiad Kaufman IWL_ERR(mvm, 5959f9af3d7SLiad Kaufman "TXQ %d is in the middle of re-config - try again\n", 5969f9af3d7SLiad Kaufman queue); 5979f9af3d7SLiad Kaufman return -EBUSY; 59842db09c1SLiad Kaufman } 59942db09c1SLiad Kaufman 60042db09c1SLiad Kaufman return queue; 60142db09c1SLiad Kaufman } 60242db09c1SLiad Kaufman 60358f2cc57SLiad Kaufman /* 6049f9af3d7SLiad Kaufman * If a given queue has a higher AC than the TID stream that is being compared 6059f9af3d7SLiad Kaufman * to, the queue needs to be redirected to the lower AC. This function does that 60658f2cc57SLiad Kaufman * in such a case, otherwise - if no redirection required - it does nothing, 60758f2cc57SLiad Kaufman * unless the %force param is true. 60858f2cc57SLiad Kaufman */ 6099f9af3d7SLiad Kaufman int iwl_mvm_scd_queue_redirect(struct iwl_mvm *mvm, int queue, int tid, 61058f2cc57SLiad Kaufman int ac, int ssn, unsigned int wdg_timeout, 61158f2cc57SLiad Kaufman bool force) 61258f2cc57SLiad Kaufman { 61358f2cc57SLiad Kaufman struct iwl_scd_txq_cfg_cmd cmd = { 61458f2cc57SLiad Kaufman .scd_queue = queue, 615f7c692deSLiad Kaufman .action = SCD_CFG_DISABLE_QUEUE, 61658f2cc57SLiad Kaufman }; 61758f2cc57SLiad Kaufman bool shared_queue; 61858f2cc57SLiad Kaufman unsigned long mq; 61958f2cc57SLiad Kaufman int ret; 62058f2cc57SLiad Kaufman 621bb49701bSSara Sharon if (WARN_ON(iwl_mvm_has_new_tx_api(mvm))) 622bb49701bSSara Sharon return -EINVAL; 623bb49701bSSara Sharon 62458f2cc57SLiad Kaufman /* 62558f2cc57SLiad Kaufman * If the AC is lower than current one - FIFO needs to be redirected to 62658f2cc57SLiad Kaufman * the lowest one of the streams in the queue. Check if this is needed 62758f2cc57SLiad Kaufman * here. 62858f2cc57SLiad Kaufman * Notice that the enum ieee80211_ac_numbers is "flipped", so BK is with 62958f2cc57SLiad Kaufman * value 3 and VO with value 0, so to check if ac X is lower than ac Y 63058f2cc57SLiad Kaufman * we need to check if the numerical value of X is LARGER than of Y. 63158f2cc57SLiad Kaufman */ 63258f2cc57SLiad Kaufman spin_lock_bh(&mvm->queue_info_lock); 63358f2cc57SLiad Kaufman if (ac <= mvm->queue_info[queue].mac80211_ac && !force) { 63458f2cc57SLiad Kaufman spin_unlock_bh(&mvm->queue_info_lock); 63558f2cc57SLiad Kaufman 63658f2cc57SLiad Kaufman IWL_DEBUG_TX_QUEUES(mvm, 63758f2cc57SLiad Kaufman "No redirection needed on TXQ #%d\n", 63858f2cc57SLiad Kaufman queue); 63958f2cc57SLiad Kaufman return 0; 64058f2cc57SLiad Kaufman } 64158f2cc57SLiad Kaufman 64258f2cc57SLiad Kaufman cmd.sta_id = mvm->queue_info[queue].ra_sta_id; 64358f2cc57SLiad Kaufman cmd.tx_fifo = iwl_mvm_ac_to_tx_fifo[mvm->queue_info[queue].mac80211_ac]; 644edbe961cSLiad Kaufman cmd.tid = mvm->queue_info[queue].txq_tid; 64558f2cc57SLiad Kaufman mq = mvm->queue_info[queue].hw_queue_to_mac80211; 64658f2cc57SLiad Kaufman shared_queue = (mvm->queue_info[queue].hw_queue_refcount > 1); 64758f2cc57SLiad Kaufman spin_unlock_bh(&mvm->queue_info_lock); 64858f2cc57SLiad Kaufman 6499f9af3d7SLiad Kaufman IWL_DEBUG_TX_QUEUES(mvm, "Redirecting TXQ #%d to FIFO #%d\n", 65058f2cc57SLiad Kaufman queue, iwl_mvm_ac_to_tx_fifo[ac]); 65158f2cc57SLiad Kaufman 65258f2cc57SLiad Kaufman /* Stop MAC queues and wait for this queue to empty */ 65358f2cc57SLiad Kaufman iwl_mvm_stop_mac_queues(mvm, mq); 65458f2cc57SLiad Kaufman ret = iwl_trans_wait_tx_queue_empty(mvm->trans, BIT(queue)); 65558f2cc57SLiad Kaufman if (ret) { 65658f2cc57SLiad Kaufman IWL_ERR(mvm, "Error draining queue %d before reconfig\n", 65758f2cc57SLiad Kaufman queue); 65858f2cc57SLiad Kaufman ret = -EIO; 65958f2cc57SLiad Kaufman goto out; 66058f2cc57SLiad Kaufman } 66158f2cc57SLiad Kaufman 66258f2cc57SLiad Kaufman /* Before redirecting the queue we need to de-activate it */ 66358f2cc57SLiad Kaufman iwl_trans_txq_disable(mvm->trans, queue, false); 66458f2cc57SLiad Kaufman ret = iwl_mvm_send_cmd_pdu(mvm, SCD_QUEUE_CFG, 0, sizeof(cmd), &cmd); 66558f2cc57SLiad Kaufman if (ret) 66658f2cc57SLiad Kaufman IWL_ERR(mvm, "Failed SCD disable TXQ %d (ret=%d)\n", queue, 66758f2cc57SLiad Kaufman ret); 66858f2cc57SLiad Kaufman 66958f2cc57SLiad Kaufman /* Make sure the SCD wrptr is correctly set before reconfiguring */ 670ca3b9c6bSSara Sharon iwl_trans_txq_enable_cfg(mvm->trans, queue, ssn, NULL, wdg_timeout); 67158f2cc57SLiad Kaufman 672edbe961cSLiad Kaufman /* Update the TID "owner" of the queue */ 673edbe961cSLiad Kaufman spin_lock_bh(&mvm->queue_info_lock); 674edbe961cSLiad Kaufman mvm->queue_info[queue].txq_tid = tid; 675edbe961cSLiad Kaufman spin_unlock_bh(&mvm->queue_info_lock); 676edbe961cSLiad Kaufman 67758f2cc57SLiad Kaufman /* TODO: Work-around SCD bug when moving back by multiples of 0x40 */ 67858f2cc57SLiad Kaufman 67958f2cc57SLiad Kaufman /* Redirect to lower AC */ 68058f2cc57SLiad Kaufman iwl_mvm_reconfig_scd(mvm, queue, iwl_mvm_ac_to_tx_fifo[ac], 68158f2cc57SLiad Kaufman cmd.sta_id, tid, LINK_QUAL_AGG_FRAME_LIMIT_DEF, 68258f2cc57SLiad Kaufman ssn); 68358f2cc57SLiad Kaufman 68458f2cc57SLiad Kaufman /* Update AC marking of the queue */ 68558f2cc57SLiad Kaufman spin_lock_bh(&mvm->queue_info_lock); 68658f2cc57SLiad Kaufman mvm->queue_info[queue].mac80211_ac = ac; 68758f2cc57SLiad Kaufman spin_unlock_bh(&mvm->queue_info_lock); 68858f2cc57SLiad Kaufman 68958f2cc57SLiad Kaufman /* 69058f2cc57SLiad Kaufman * Mark queue as shared in transport if shared 69158f2cc57SLiad Kaufman * Note this has to be done after queue enablement because enablement 69258f2cc57SLiad Kaufman * can also set this value, and there is no indication there to shared 69358f2cc57SLiad Kaufman * queues 69458f2cc57SLiad Kaufman */ 69558f2cc57SLiad Kaufman if (shared_queue) 69658f2cc57SLiad Kaufman iwl_trans_txq_set_shared_mode(mvm->trans, queue, true); 69758f2cc57SLiad Kaufman 69858f2cc57SLiad Kaufman out: 69958f2cc57SLiad Kaufman /* Continue using the MAC queues */ 70058f2cc57SLiad Kaufman iwl_mvm_start_mac_queues(mvm, mq); 70158f2cc57SLiad Kaufman 70258f2cc57SLiad Kaufman return ret; 70358f2cc57SLiad Kaufman } 70458f2cc57SLiad Kaufman 705310181ecSSara Sharon static int iwl_mvm_sta_alloc_queue_tvqm(struct iwl_mvm *mvm, 706310181ecSSara Sharon struct ieee80211_sta *sta, u8 ac, 707310181ecSSara Sharon int tid) 708310181ecSSara Sharon { 709310181ecSSara Sharon struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta); 710310181ecSSara Sharon unsigned int wdg_timeout = 711310181ecSSara Sharon iwl_mvm_get_wd_timeout(mvm, mvmsta->vif, false, false); 712310181ecSSara Sharon u8 mac_queue = mvmsta->vif->hw_queue[ac]; 713310181ecSSara Sharon int queue = -1; 714310181ecSSara Sharon 715310181ecSSara Sharon lockdep_assert_held(&mvm->mutex); 716310181ecSSara Sharon 717310181ecSSara Sharon IWL_DEBUG_TX_QUEUES(mvm, 718310181ecSSara Sharon "Allocating queue for sta %d on tid %d\n", 719310181ecSSara Sharon mvmsta->sta_id, tid); 720310181ecSSara Sharon queue = iwl_mvm_tvqm_enable_txq(mvm, mac_queue, mvmsta->sta_id, tid, 721310181ecSSara Sharon wdg_timeout); 722310181ecSSara Sharon if (queue < 0) 723310181ecSSara Sharon return queue; 724310181ecSSara Sharon 725310181ecSSara Sharon IWL_DEBUG_TX_QUEUES(mvm, "Allocated queue is %d\n", queue); 726310181ecSSara Sharon 727310181ecSSara Sharon spin_lock_bh(&mvmsta->lock); 728310181ecSSara Sharon mvmsta->tid_data[tid].txq_id = queue; 729310181ecSSara Sharon mvmsta->tid_data[tid].is_tid_active = true; 730310181ecSSara Sharon mvmsta->tfd_queue_msk |= BIT(queue); 731310181ecSSara Sharon spin_unlock_bh(&mvmsta->lock); 732310181ecSSara Sharon 733310181ecSSara Sharon spin_lock_bh(&mvm->queue_info_lock); 734310181ecSSara Sharon mvm->queue_info[queue].status = IWL_MVM_QUEUE_READY; 735310181ecSSara Sharon spin_unlock_bh(&mvm->queue_info_lock); 736310181ecSSara Sharon 737310181ecSSara Sharon return 0; 738310181ecSSara Sharon } 739310181ecSSara Sharon 74024afba76SLiad Kaufman static int iwl_mvm_sta_alloc_queue(struct iwl_mvm *mvm, 74124afba76SLiad Kaufman struct ieee80211_sta *sta, u8 ac, int tid, 74224afba76SLiad Kaufman struct ieee80211_hdr *hdr) 74324afba76SLiad Kaufman { 74424afba76SLiad Kaufman struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta); 74524afba76SLiad Kaufman struct iwl_trans_txq_scd_cfg cfg = { 74624afba76SLiad Kaufman .fifo = iwl_mvm_ac_to_tx_fifo[ac], 74724afba76SLiad Kaufman .sta_id = mvmsta->sta_id, 74824afba76SLiad Kaufman .tid = tid, 74924afba76SLiad Kaufman .frame_limit = IWL_FRAME_LIMIT, 75024afba76SLiad Kaufman }; 75124afba76SLiad Kaufman unsigned int wdg_timeout = 75224afba76SLiad Kaufman iwl_mvm_get_wd_timeout(mvm, mvmsta->vif, false, false); 75324afba76SLiad Kaufman u8 mac_queue = mvmsta->vif->hw_queue[ac]; 75424afba76SLiad Kaufman int queue = -1; 75501796ff2SSara Sharon bool using_inactive_queue = false, same_sta = false; 7569794c64fSLiad Kaufman unsigned long disable_agg_tids = 0; 7579794c64fSLiad Kaufman enum iwl_mvm_agg_state queue_state; 75842db09c1SLiad Kaufman bool shared_queue = false; 75924afba76SLiad Kaufman int ssn; 76042db09c1SLiad Kaufman unsigned long tfd_queue_mask; 761cf961e16SLiad Kaufman int ret; 76224afba76SLiad Kaufman 76324afba76SLiad Kaufman lockdep_assert_held(&mvm->mutex); 76424afba76SLiad Kaufman 765310181ecSSara Sharon if (iwl_mvm_has_new_tx_api(mvm)) 766310181ecSSara Sharon return iwl_mvm_sta_alloc_queue_tvqm(mvm, sta, ac, tid); 767310181ecSSara Sharon 76842db09c1SLiad Kaufman spin_lock_bh(&mvmsta->lock); 76942db09c1SLiad Kaufman tfd_queue_mask = mvmsta->tfd_queue_msk; 77042db09c1SLiad Kaufman spin_unlock_bh(&mvmsta->lock); 77142db09c1SLiad Kaufman 772d2515a99SLiad Kaufman spin_lock_bh(&mvm->queue_info_lock); 77324afba76SLiad Kaufman 77424afba76SLiad Kaufman /* 77524afba76SLiad Kaufman * Non-QoS, QoS NDP and MGMT frames should go to a MGMT queue, if one 77624afba76SLiad Kaufman * exists 77724afba76SLiad Kaufman */ 77824afba76SLiad Kaufman if (!ieee80211_is_data_qos(hdr->frame_control) || 77924afba76SLiad Kaufman ieee80211_is_qos_nullfunc(hdr->frame_control)) { 7809794c64fSLiad Kaufman queue = iwl_mvm_find_free_queue(mvm, mvmsta->sta_id, 7819794c64fSLiad Kaufman IWL_MVM_DQA_MIN_MGMT_QUEUE, 78224afba76SLiad Kaufman IWL_MVM_DQA_MAX_MGMT_QUEUE); 78324afba76SLiad Kaufman if (queue >= IWL_MVM_DQA_MIN_MGMT_QUEUE) 78424afba76SLiad Kaufman IWL_DEBUG_TX_QUEUES(mvm, "Found free MGMT queue #%d\n", 78524afba76SLiad Kaufman queue); 78624afba76SLiad Kaufman 78724afba76SLiad Kaufman /* If no such queue is found, we'll use a DATA queue instead */ 78824afba76SLiad Kaufman } 78924afba76SLiad Kaufman 7909794c64fSLiad Kaufman if ((queue < 0 && mvmsta->reserved_queue != IEEE80211_INVAL_HW_QUEUE) && 7919794c64fSLiad Kaufman (mvm->queue_info[mvmsta->reserved_queue].status == 7929794c64fSLiad Kaufman IWL_MVM_QUEUE_RESERVED || 7939794c64fSLiad Kaufman mvm->queue_info[mvmsta->reserved_queue].status == 7949794c64fSLiad Kaufman IWL_MVM_QUEUE_INACTIVE)) { 79524afba76SLiad Kaufman queue = mvmsta->reserved_queue; 7969794c64fSLiad Kaufman mvm->queue_info[queue].reserved = true; 79724afba76SLiad Kaufman IWL_DEBUG_TX_QUEUES(mvm, "Using reserved queue #%d\n", queue); 79824afba76SLiad Kaufman } 79924afba76SLiad Kaufman 80024afba76SLiad Kaufman if (queue < 0) 8019794c64fSLiad Kaufman queue = iwl_mvm_find_free_queue(mvm, mvmsta->sta_id, 8029794c64fSLiad Kaufman IWL_MVM_DQA_MIN_DATA_QUEUE, 80324afba76SLiad Kaufman IWL_MVM_DQA_MAX_DATA_QUEUE); 804cf961e16SLiad Kaufman 805cf961e16SLiad Kaufman /* 8069794c64fSLiad Kaufman * Check if this queue is already allocated but inactive. 8079794c64fSLiad Kaufman * In such a case, we'll need to first free this queue before enabling 8089794c64fSLiad Kaufman * it again, so we'll mark it as reserved to make sure no new traffic 8099794c64fSLiad Kaufman * arrives on it 8109794c64fSLiad Kaufman */ 8119794c64fSLiad Kaufman if (queue > 0 && 8129794c64fSLiad Kaufman mvm->queue_info[queue].status == IWL_MVM_QUEUE_INACTIVE) { 8139794c64fSLiad Kaufman mvm->queue_info[queue].status = IWL_MVM_QUEUE_RESERVED; 8149794c64fSLiad Kaufman using_inactive_queue = true; 81501796ff2SSara Sharon same_sta = mvm->queue_info[queue].ra_sta_id == mvmsta->sta_id; 8169794c64fSLiad Kaufman IWL_DEBUG_TX_QUEUES(mvm, 8179794c64fSLiad Kaufman "Re-assigning TXQ %d: sta_id=%d, tid=%d\n", 8189794c64fSLiad Kaufman queue, mvmsta->sta_id, tid); 8199794c64fSLiad Kaufman } 8209794c64fSLiad Kaufman 82142db09c1SLiad Kaufman /* No free queue - we'll have to share */ 82242db09c1SLiad Kaufman if (queue <= 0) { 82342db09c1SLiad Kaufman queue = iwl_mvm_get_shared_queue(mvm, tfd_queue_mask, ac); 82442db09c1SLiad Kaufman if (queue > 0) { 82542db09c1SLiad Kaufman shared_queue = true; 82642db09c1SLiad Kaufman mvm->queue_info[queue].status = IWL_MVM_QUEUE_SHARED; 82742db09c1SLiad Kaufman } 82842db09c1SLiad Kaufman } 82942db09c1SLiad Kaufman 8309794c64fSLiad Kaufman /* 831cf961e16SLiad Kaufman * Mark TXQ as ready, even though it hasn't been fully configured yet, 832cf961e16SLiad Kaufman * to make sure no one else takes it. 833cf961e16SLiad Kaufman * This will allow avoiding re-acquiring the lock at the end of the 834cf961e16SLiad Kaufman * configuration. On error we'll mark it back as free. 835cf961e16SLiad Kaufman */ 83642db09c1SLiad Kaufman if ((queue > 0) && !shared_queue) 837cf961e16SLiad Kaufman mvm->queue_info[queue].status = IWL_MVM_QUEUE_READY; 83824afba76SLiad Kaufman 839d2515a99SLiad Kaufman spin_unlock_bh(&mvm->queue_info_lock); 84024afba76SLiad Kaufman 84142db09c1SLiad Kaufman /* This shouldn't happen - out of queues */ 84242db09c1SLiad Kaufman if (WARN_ON(queue <= 0)) { 84342db09c1SLiad Kaufman IWL_ERR(mvm, "No available queues for tid %d on sta_id %d\n", 84442db09c1SLiad Kaufman tid, cfg.sta_id); 8459f9af3d7SLiad Kaufman return queue; 84642db09c1SLiad Kaufman } 84724afba76SLiad Kaufman 84824afba76SLiad Kaufman /* 84924afba76SLiad Kaufman * Actual en/disablement of aggregations is through the ADD_STA HCMD, 85024afba76SLiad Kaufman * but for configuring the SCD to send A-MPDUs we need to mark the queue 85124afba76SLiad Kaufman * as aggregatable. 85224afba76SLiad Kaufman * Mark all DATA queues as allowing to be aggregated at some point 85324afba76SLiad Kaufman */ 854d5216a28SLiad Kaufman cfg.aggregate = (queue >= IWL_MVM_DQA_MIN_DATA_QUEUE || 855d5216a28SLiad Kaufman queue == IWL_MVM_DQA_BSS_CLIENT_QUEUE); 85624afba76SLiad Kaufman 8579794c64fSLiad Kaufman /* 8589794c64fSLiad Kaufman * If this queue was previously inactive (idle) - we need to free it 8599794c64fSLiad Kaufman * first 8609794c64fSLiad Kaufman */ 8619794c64fSLiad Kaufman if (using_inactive_queue) { 86201796ff2SSara Sharon ret = iwl_mvm_free_inactive_queue(mvm, queue, same_sta); 86301796ff2SSara Sharon if (ret) 8649794c64fSLiad Kaufman return ret; 8659794c64fSLiad Kaufman } 8668d98ae6eSLiad Kaufman 86742db09c1SLiad Kaufman IWL_DEBUG_TX_QUEUES(mvm, 86842db09c1SLiad Kaufman "Allocating %squeue #%d to sta %d on tid %d\n", 86942db09c1SLiad Kaufman shared_queue ? "shared " : "", queue, 87042db09c1SLiad Kaufman mvmsta->sta_id, tid); 87142db09c1SLiad Kaufman 87242db09c1SLiad Kaufman if (shared_queue) { 87342db09c1SLiad Kaufman /* Disable any open aggs on this queue */ 87442db09c1SLiad Kaufman disable_agg_tids = iwl_mvm_get_queue_agg_tids(mvm, queue); 87542db09c1SLiad Kaufman 87642db09c1SLiad Kaufman if (disable_agg_tids) { 87742db09c1SLiad Kaufman IWL_DEBUG_TX_QUEUES(mvm, "Disabling aggs on queue %d\n", 87842db09c1SLiad Kaufman queue); 87942db09c1SLiad Kaufman iwl_mvm_invalidate_sta_queue(mvm, queue, 88042db09c1SLiad Kaufman disable_agg_tids, false); 88142db09c1SLiad Kaufman } 88242db09c1SLiad Kaufman } 88324afba76SLiad Kaufman 88424afba76SLiad Kaufman ssn = IEEE80211_SEQ_TO_SN(le16_to_cpu(hdr->seq_ctrl)); 88524afba76SLiad Kaufman iwl_mvm_enable_txq(mvm, queue, mac_queue, ssn, &cfg, 88624afba76SLiad Kaufman wdg_timeout); 88724afba76SLiad Kaufman 88858f2cc57SLiad Kaufman /* 88958f2cc57SLiad Kaufman * Mark queue as shared in transport if shared 89058f2cc57SLiad Kaufman * Note this has to be done after queue enablement because enablement 89158f2cc57SLiad Kaufman * can also set this value, and there is no indication there to shared 89258f2cc57SLiad Kaufman * queues 89358f2cc57SLiad Kaufman */ 89458f2cc57SLiad Kaufman if (shared_queue) 89558f2cc57SLiad Kaufman iwl_trans_txq_set_shared_mode(mvm->trans, queue, true); 89658f2cc57SLiad Kaufman 89724afba76SLiad Kaufman spin_lock_bh(&mvmsta->lock); 89824afba76SLiad Kaufman mvmsta->tid_data[tid].txq_id = queue; 8999794c64fSLiad Kaufman mvmsta->tid_data[tid].is_tid_active = true; 90024afba76SLiad Kaufman mvmsta->tfd_queue_msk |= BIT(queue); 9019794c64fSLiad Kaufman queue_state = mvmsta->tid_data[tid].state; 90224afba76SLiad Kaufman 90324afba76SLiad Kaufman if (mvmsta->reserved_queue == queue) 90424afba76SLiad Kaufman mvmsta->reserved_queue = IEEE80211_INVAL_HW_QUEUE; 90524afba76SLiad Kaufman spin_unlock_bh(&mvmsta->lock); 90624afba76SLiad Kaufman 90742db09c1SLiad Kaufman if (!shared_queue) { 908cf961e16SLiad Kaufman ret = iwl_mvm_sta_send_to_fw(mvm, sta, true, STA_MODIFY_QUEUES); 909cf961e16SLiad Kaufman if (ret) 910cf961e16SLiad Kaufman goto out_err; 911cf961e16SLiad Kaufman 9129794c64fSLiad Kaufman /* If we need to re-enable aggregations... */ 91342db09c1SLiad Kaufman if (queue_state == IWL_AGG_ON) { 9149794c64fSLiad Kaufman ret = iwl_mvm_sta_tx_agg(mvm, sta, tid, queue, true); 91542db09c1SLiad Kaufman if (ret) 91642db09c1SLiad Kaufman goto out_err; 91742db09c1SLiad Kaufman } 91858f2cc57SLiad Kaufman } else { 91958f2cc57SLiad Kaufman /* Redirect queue, if needed */ 92058f2cc57SLiad Kaufman ret = iwl_mvm_scd_queue_redirect(mvm, queue, tid, ac, ssn, 92158f2cc57SLiad Kaufman wdg_timeout, false); 92258f2cc57SLiad Kaufman if (ret) 92358f2cc57SLiad Kaufman goto out_err; 92442db09c1SLiad Kaufman } 9259794c64fSLiad Kaufman 92642db09c1SLiad Kaufman return 0; 927cf961e16SLiad Kaufman 928cf961e16SLiad Kaufman out_err: 929cf961e16SLiad Kaufman iwl_mvm_disable_txq(mvm, queue, mac_queue, tid, 0); 930cf961e16SLiad Kaufman 931cf961e16SLiad Kaufman return ret; 93224afba76SLiad Kaufman } 93324afba76SLiad Kaufman 93419aefa45SLiad Kaufman static void iwl_mvm_change_queue_owner(struct iwl_mvm *mvm, int queue) 93519aefa45SLiad Kaufman { 93619aefa45SLiad Kaufman struct iwl_scd_txq_cfg_cmd cmd = { 93719aefa45SLiad Kaufman .scd_queue = queue, 93819aefa45SLiad Kaufman .action = SCD_CFG_UPDATE_QUEUE_TID, 93919aefa45SLiad Kaufman }; 94019aefa45SLiad Kaufman int tid; 94119aefa45SLiad Kaufman unsigned long tid_bitmap; 94219aefa45SLiad Kaufman int ret; 94319aefa45SLiad Kaufman 94419aefa45SLiad Kaufman lockdep_assert_held(&mvm->mutex); 94519aefa45SLiad Kaufman 946bb49701bSSara Sharon if (WARN_ON(iwl_mvm_has_new_tx_api(mvm))) 947bb49701bSSara Sharon return; 948bb49701bSSara Sharon 94919aefa45SLiad Kaufman spin_lock_bh(&mvm->queue_info_lock); 95019aefa45SLiad Kaufman tid_bitmap = mvm->queue_info[queue].tid_bitmap; 95119aefa45SLiad Kaufman spin_unlock_bh(&mvm->queue_info_lock); 95219aefa45SLiad Kaufman 95319aefa45SLiad Kaufman if (WARN(!tid_bitmap, "TXQ %d has no tids assigned to it\n", queue)) 95419aefa45SLiad Kaufman return; 95519aefa45SLiad Kaufman 95619aefa45SLiad Kaufman /* Find any TID for queue */ 95719aefa45SLiad Kaufman tid = find_first_bit(&tid_bitmap, IWL_MAX_TID_COUNT + 1); 95819aefa45SLiad Kaufman cmd.tid = tid; 95919aefa45SLiad Kaufman cmd.tx_fifo = iwl_mvm_ac_to_tx_fifo[tid_to_mac80211_ac[tid]]; 96019aefa45SLiad Kaufman 96119aefa45SLiad Kaufman ret = iwl_mvm_send_cmd_pdu(mvm, SCD_QUEUE_CFG, 0, sizeof(cmd), &cmd); 962341ca402SLiad Kaufman if (ret) { 96319aefa45SLiad Kaufman IWL_ERR(mvm, "Failed to update owner of TXQ %d (ret=%d)\n", 96419aefa45SLiad Kaufman queue, ret); 965341ca402SLiad Kaufman return; 966341ca402SLiad Kaufman } 967341ca402SLiad Kaufman 968341ca402SLiad Kaufman spin_lock_bh(&mvm->queue_info_lock); 969341ca402SLiad Kaufman mvm->queue_info[queue].txq_tid = tid; 970341ca402SLiad Kaufman spin_unlock_bh(&mvm->queue_info_lock); 97119aefa45SLiad Kaufman IWL_DEBUG_TX_QUEUES(mvm, "Changed TXQ %d ownership to tid %d\n", 97219aefa45SLiad Kaufman queue, tid); 97319aefa45SLiad Kaufman } 97419aefa45SLiad Kaufman 9759f9af3d7SLiad Kaufman static void iwl_mvm_unshare_queue(struct iwl_mvm *mvm, int queue) 9769f9af3d7SLiad Kaufman { 9779f9af3d7SLiad Kaufman struct ieee80211_sta *sta; 9789f9af3d7SLiad Kaufman struct iwl_mvm_sta *mvmsta; 9799f9af3d7SLiad Kaufman s8 sta_id; 9809f9af3d7SLiad Kaufman int tid = -1; 9819f9af3d7SLiad Kaufman unsigned long tid_bitmap; 9829f9af3d7SLiad Kaufman unsigned int wdg_timeout; 9839f9af3d7SLiad Kaufman int ssn; 9849f9af3d7SLiad Kaufman int ret = true; 9859f9af3d7SLiad Kaufman 986bb49701bSSara Sharon /* queue sharing is disabled on new TX path */ 987bb49701bSSara Sharon if (WARN_ON(iwl_mvm_has_new_tx_api(mvm))) 988bb49701bSSara Sharon return; 989bb49701bSSara Sharon 9909f9af3d7SLiad Kaufman lockdep_assert_held(&mvm->mutex); 9919f9af3d7SLiad Kaufman 9929f9af3d7SLiad Kaufman spin_lock_bh(&mvm->queue_info_lock); 9939f9af3d7SLiad Kaufman sta_id = mvm->queue_info[queue].ra_sta_id; 9949f9af3d7SLiad Kaufman tid_bitmap = mvm->queue_info[queue].tid_bitmap; 9959f9af3d7SLiad Kaufman spin_unlock_bh(&mvm->queue_info_lock); 9969f9af3d7SLiad Kaufman 9979f9af3d7SLiad Kaufman /* Find TID for queue, and make sure it is the only one on the queue */ 9989f9af3d7SLiad Kaufman tid = find_first_bit(&tid_bitmap, IWL_MAX_TID_COUNT + 1); 9999f9af3d7SLiad Kaufman if (tid_bitmap != BIT(tid)) { 10009f9af3d7SLiad Kaufman IWL_ERR(mvm, "Failed to unshare q %d, active tids=0x%lx\n", 10019f9af3d7SLiad Kaufman queue, tid_bitmap); 10029f9af3d7SLiad Kaufman return; 10039f9af3d7SLiad Kaufman } 10049f9af3d7SLiad Kaufman 10059f9af3d7SLiad Kaufman IWL_DEBUG_TX_QUEUES(mvm, "Unsharing TXQ %d, keeping tid %d\n", queue, 10069f9af3d7SLiad Kaufman tid); 10079f9af3d7SLiad Kaufman 10089f9af3d7SLiad Kaufman sta = rcu_dereference_protected(mvm->fw_id_to_mac_id[sta_id], 10099f9af3d7SLiad Kaufman lockdep_is_held(&mvm->mutex)); 10109f9af3d7SLiad Kaufman 10119f9af3d7SLiad Kaufman if (WARN_ON_ONCE(IS_ERR_OR_NULL(sta))) 10129f9af3d7SLiad Kaufman return; 10139f9af3d7SLiad Kaufman 10149f9af3d7SLiad Kaufman mvmsta = iwl_mvm_sta_from_mac80211(sta); 10159f9af3d7SLiad Kaufman wdg_timeout = iwl_mvm_get_wd_timeout(mvm, mvmsta->vif, false, false); 10169f9af3d7SLiad Kaufman 10179f9af3d7SLiad Kaufman ssn = IEEE80211_SEQ_TO_SN(mvmsta->tid_data[tid].seq_number); 10189f9af3d7SLiad Kaufman 10199f9af3d7SLiad Kaufman ret = iwl_mvm_scd_queue_redirect(mvm, queue, tid, 10209f9af3d7SLiad Kaufman tid_to_mac80211_ac[tid], ssn, 10219f9af3d7SLiad Kaufman wdg_timeout, true); 10229f9af3d7SLiad Kaufman if (ret) { 10239f9af3d7SLiad Kaufman IWL_ERR(mvm, "Failed to redirect TXQ %d\n", queue); 10249f9af3d7SLiad Kaufman return; 10259f9af3d7SLiad Kaufman } 10269f9af3d7SLiad Kaufman 10279f9af3d7SLiad Kaufman /* If aggs should be turned back on - do it */ 10289f9af3d7SLiad Kaufman if (mvmsta->tid_data[tid].state == IWL_AGG_ON) { 10299cd70e80SEmmanuel Grumbach struct iwl_mvm_add_sta_cmd cmd = {0}; 10309f9af3d7SLiad Kaufman 10319f9af3d7SLiad Kaufman mvmsta->tid_disable_agg &= ~BIT(tid); 10329f9af3d7SLiad Kaufman 10339f9af3d7SLiad Kaufman cmd.mac_id_n_color = cpu_to_le32(mvmsta->mac_id_n_color); 10349f9af3d7SLiad Kaufman cmd.sta_id = mvmsta->sta_id; 10359f9af3d7SLiad Kaufman cmd.add_modify = STA_MODE_MODIFY; 10369f9af3d7SLiad Kaufman cmd.modify_mask = STA_MODIFY_TID_DISABLE_TX; 10379f9af3d7SLiad Kaufman cmd.tfd_queue_msk = cpu_to_le32(mvmsta->tfd_queue_msk); 10389f9af3d7SLiad Kaufman cmd.tid_disable_tx = cpu_to_le16(mvmsta->tid_disable_agg); 10399f9af3d7SLiad Kaufman 10409f9af3d7SLiad Kaufman ret = iwl_mvm_send_cmd_pdu(mvm, ADD_STA, CMD_ASYNC, 10419f9af3d7SLiad Kaufman iwl_mvm_add_sta_cmd_size(mvm), &cmd); 10429f9af3d7SLiad Kaufman if (!ret) { 10439f9af3d7SLiad Kaufman IWL_DEBUG_TX_QUEUES(mvm, 10449f9af3d7SLiad Kaufman "TXQ #%d is now aggregated again\n", 10459f9af3d7SLiad Kaufman queue); 10469f9af3d7SLiad Kaufman 10479f9af3d7SLiad Kaufman /* Mark queue intenally as aggregating again */ 10489f9af3d7SLiad Kaufman iwl_trans_txq_set_shared_mode(mvm->trans, queue, false); 10499f9af3d7SLiad Kaufman } 10509f9af3d7SLiad Kaufman } 10519f9af3d7SLiad Kaufman 10529f9af3d7SLiad Kaufman spin_lock_bh(&mvm->queue_info_lock); 10539f9af3d7SLiad Kaufman mvm->queue_info[queue].status = IWL_MVM_QUEUE_READY; 10549f9af3d7SLiad Kaufman spin_unlock_bh(&mvm->queue_info_lock); 10559f9af3d7SLiad Kaufman } 10569f9af3d7SLiad Kaufman 105724afba76SLiad Kaufman static inline u8 iwl_mvm_tid_to_ac_queue(int tid) 105824afba76SLiad Kaufman { 105924afba76SLiad Kaufman if (tid == IWL_MAX_TID_COUNT) 106024afba76SLiad Kaufman return IEEE80211_AC_VO; /* MGMT */ 106124afba76SLiad Kaufman 106224afba76SLiad Kaufman return tid_to_mac80211_ac[tid]; 106324afba76SLiad Kaufman } 106424afba76SLiad Kaufman 106524afba76SLiad Kaufman static void iwl_mvm_tx_deferred_stream(struct iwl_mvm *mvm, 106624afba76SLiad Kaufman struct ieee80211_sta *sta, int tid) 106724afba76SLiad Kaufman { 106824afba76SLiad Kaufman struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta); 106924afba76SLiad Kaufman struct iwl_mvm_tid_data *tid_data = &mvmsta->tid_data[tid]; 107024afba76SLiad Kaufman struct sk_buff *skb; 107124afba76SLiad Kaufman struct ieee80211_hdr *hdr; 107224afba76SLiad Kaufman struct sk_buff_head deferred_tx; 107324afba76SLiad Kaufman u8 mac_queue; 107424afba76SLiad Kaufman bool no_queue = false; /* Marks if there is a problem with the queue */ 107524afba76SLiad Kaufman u8 ac; 107624afba76SLiad Kaufman 107724afba76SLiad Kaufman lockdep_assert_held(&mvm->mutex); 107824afba76SLiad Kaufman 107924afba76SLiad Kaufman skb = skb_peek(&tid_data->deferred_tx_frames); 108024afba76SLiad Kaufman if (!skb) 108124afba76SLiad Kaufman return; 108224afba76SLiad Kaufman hdr = (void *)skb->data; 108324afba76SLiad Kaufman 108424afba76SLiad Kaufman ac = iwl_mvm_tid_to_ac_queue(tid); 108524afba76SLiad Kaufman mac_queue = IEEE80211_SKB_CB(skb)->hw_queue; 108624afba76SLiad Kaufman 108724afba76SLiad Kaufman if (tid_data->txq_id == IEEE80211_INVAL_HW_QUEUE && 108824afba76SLiad Kaufman iwl_mvm_sta_alloc_queue(mvm, sta, ac, tid, hdr)) { 108924afba76SLiad Kaufman IWL_ERR(mvm, 109024afba76SLiad Kaufman "Can't alloc TXQ for sta %d tid %d - dropping frame\n", 109124afba76SLiad Kaufman mvmsta->sta_id, tid); 109224afba76SLiad Kaufman 109324afba76SLiad Kaufman /* 109424afba76SLiad Kaufman * Mark queue as problematic so later the deferred traffic is 109524afba76SLiad Kaufman * freed, as we can do nothing with it 109624afba76SLiad Kaufman */ 109724afba76SLiad Kaufman no_queue = true; 109824afba76SLiad Kaufman } 109924afba76SLiad Kaufman 110024afba76SLiad Kaufman __skb_queue_head_init(&deferred_tx); 110124afba76SLiad Kaufman 1102d2515a99SLiad Kaufman /* Disable bottom-halves when entering TX path */ 1103d2515a99SLiad Kaufman local_bh_disable(); 110424afba76SLiad Kaufman spin_lock(&mvmsta->lock); 110524afba76SLiad Kaufman skb_queue_splice_init(&tid_data->deferred_tx_frames, &deferred_tx); 1106ad5de737SLiad Kaufman mvmsta->deferred_traffic_tid_map &= ~BIT(tid); 110724afba76SLiad Kaufman spin_unlock(&mvmsta->lock); 110824afba76SLiad Kaufman 110924afba76SLiad Kaufman while ((skb = __skb_dequeue(&deferred_tx))) 111024afba76SLiad Kaufman if (no_queue || iwl_mvm_tx_skb(mvm, skb, sta)) 111124afba76SLiad Kaufman ieee80211_free_txskb(mvm->hw, skb); 111224afba76SLiad Kaufman local_bh_enable(); 111324afba76SLiad Kaufman 111424afba76SLiad Kaufman /* Wake queue */ 111524afba76SLiad Kaufman iwl_mvm_start_mac_queues(mvm, BIT(mac_queue)); 111624afba76SLiad Kaufman } 111724afba76SLiad Kaufman 111824afba76SLiad Kaufman void iwl_mvm_add_new_dqa_stream_wk(struct work_struct *wk) 111924afba76SLiad Kaufman { 112024afba76SLiad Kaufman struct iwl_mvm *mvm = container_of(wk, struct iwl_mvm, 112124afba76SLiad Kaufman add_stream_wk); 112224afba76SLiad Kaufman struct ieee80211_sta *sta; 112324afba76SLiad Kaufman struct iwl_mvm_sta *mvmsta; 112424afba76SLiad Kaufman unsigned long deferred_tid_traffic; 11259f9af3d7SLiad Kaufman int queue, sta_id, tid; 112624afba76SLiad Kaufman 11279794c64fSLiad Kaufman /* Check inactivity of queues */ 11289794c64fSLiad Kaufman iwl_mvm_inactivity_check(mvm); 11299794c64fSLiad Kaufman 113024afba76SLiad Kaufman mutex_lock(&mvm->mutex); 113124afba76SLiad Kaufman 11329f9af3d7SLiad Kaufman /* Reconfigure queues requiring reconfiguation */ 11339f9af3d7SLiad Kaufman for (queue = 0; queue < IWL_MAX_HW_QUEUES; queue++) { 11349f9af3d7SLiad Kaufman bool reconfig; 113519aefa45SLiad Kaufman bool change_owner; 11369f9af3d7SLiad Kaufman 11379f9af3d7SLiad Kaufman spin_lock_bh(&mvm->queue_info_lock); 11389f9af3d7SLiad Kaufman reconfig = (mvm->queue_info[queue].status == 11399f9af3d7SLiad Kaufman IWL_MVM_QUEUE_RECONFIGURING); 114019aefa45SLiad Kaufman 114119aefa45SLiad Kaufman /* 114219aefa45SLiad Kaufman * We need to take into account a situation in which a TXQ was 114319aefa45SLiad Kaufman * allocated to TID x, and then turned shared by adding TIDs y 114419aefa45SLiad Kaufman * and z. If TID x becomes inactive and is removed from the TXQ, 114519aefa45SLiad Kaufman * ownership must be given to one of the remaining TIDs. 114619aefa45SLiad Kaufman * This is mainly because if TID x continues - a new queue can't 114719aefa45SLiad Kaufman * be allocated for it as long as it is an owner of another TXQ. 114819aefa45SLiad Kaufman */ 114919aefa45SLiad Kaufman change_owner = !(mvm->queue_info[queue].tid_bitmap & 115019aefa45SLiad Kaufman BIT(mvm->queue_info[queue].txq_tid)) && 115119aefa45SLiad Kaufman (mvm->queue_info[queue].status == 115219aefa45SLiad Kaufman IWL_MVM_QUEUE_SHARED); 11539f9af3d7SLiad Kaufman spin_unlock_bh(&mvm->queue_info_lock); 11549f9af3d7SLiad Kaufman 11559f9af3d7SLiad Kaufman if (reconfig) 11569f9af3d7SLiad Kaufman iwl_mvm_unshare_queue(mvm, queue); 115719aefa45SLiad Kaufman else if (change_owner) 115819aefa45SLiad Kaufman iwl_mvm_change_queue_owner(mvm, queue); 11599f9af3d7SLiad Kaufman } 11609f9af3d7SLiad Kaufman 116124afba76SLiad Kaufman /* Go over all stations with deferred traffic */ 116224afba76SLiad Kaufman for_each_set_bit(sta_id, mvm->sta_deferred_frames, 116324afba76SLiad Kaufman IWL_MVM_STATION_COUNT) { 116424afba76SLiad Kaufman clear_bit(sta_id, mvm->sta_deferred_frames); 116524afba76SLiad Kaufman sta = rcu_dereference_protected(mvm->fw_id_to_mac_id[sta_id], 116624afba76SLiad Kaufman lockdep_is_held(&mvm->mutex)); 116724afba76SLiad Kaufman if (IS_ERR_OR_NULL(sta)) 116824afba76SLiad Kaufman continue; 116924afba76SLiad Kaufman 117024afba76SLiad Kaufman mvmsta = iwl_mvm_sta_from_mac80211(sta); 117124afba76SLiad Kaufman deferred_tid_traffic = mvmsta->deferred_traffic_tid_map; 117224afba76SLiad Kaufman 117324afba76SLiad Kaufman for_each_set_bit(tid, &deferred_tid_traffic, 117424afba76SLiad Kaufman IWL_MAX_TID_COUNT + 1) 117524afba76SLiad Kaufman iwl_mvm_tx_deferred_stream(mvm, sta, tid); 117624afba76SLiad Kaufman } 117724afba76SLiad Kaufman 117824afba76SLiad Kaufman mutex_unlock(&mvm->mutex); 117924afba76SLiad Kaufman } 118024afba76SLiad Kaufman 118124afba76SLiad Kaufman static int iwl_mvm_reserve_sta_stream(struct iwl_mvm *mvm, 1182d5216a28SLiad Kaufman struct ieee80211_sta *sta, 1183d5216a28SLiad Kaufman enum nl80211_iftype vif_type) 118424afba76SLiad Kaufman { 118524afba76SLiad Kaufman struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta); 118624afba76SLiad Kaufman int queue; 118701796ff2SSara Sharon bool using_inactive_queue = false, same_sta = false; 118824afba76SLiad Kaufman 11899794c64fSLiad Kaufman /* 11909794c64fSLiad Kaufman * Check for inactive queues, so we don't reach a situation where we 11919794c64fSLiad Kaufman * can't add a STA due to a shortage in queues that doesn't really exist 11929794c64fSLiad Kaufman */ 11939794c64fSLiad Kaufman iwl_mvm_inactivity_check(mvm); 11949794c64fSLiad Kaufman 119524afba76SLiad Kaufman spin_lock_bh(&mvm->queue_info_lock); 119624afba76SLiad Kaufman 119724afba76SLiad Kaufman /* Make sure we have free resources for this STA */ 1198d5216a28SLiad Kaufman if (vif_type == NL80211_IFTYPE_STATION && !sta->tdls && 1199d5216a28SLiad Kaufman !mvm->queue_info[IWL_MVM_DQA_BSS_CLIENT_QUEUE].hw_queue_refcount && 1200cf961e16SLiad Kaufman (mvm->queue_info[IWL_MVM_DQA_BSS_CLIENT_QUEUE].status == 1201cf961e16SLiad Kaufman IWL_MVM_QUEUE_FREE)) 1202d5216a28SLiad Kaufman queue = IWL_MVM_DQA_BSS_CLIENT_QUEUE; 1203d5216a28SLiad Kaufman else 12049794c64fSLiad Kaufman queue = iwl_mvm_find_free_queue(mvm, mvmsta->sta_id, 12059794c64fSLiad Kaufman IWL_MVM_DQA_MIN_DATA_QUEUE, 120624afba76SLiad Kaufman IWL_MVM_DQA_MAX_DATA_QUEUE); 120724afba76SLiad Kaufman if (queue < 0) { 120824afba76SLiad Kaufman spin_unlock_bh(&mvm->queue_info_lock); 120924afba76SLiad Kaufman IWL_ERR(mvm, "No available queues for new station\n"); 121024afba76SLiad Kaufman return -ENOSPC; 121101796ff2SSara Sharon } else if (mvm->queue_info[queue].status == IWL_MVM_QUEUE_INACTIVE) { 121201796ff2SSara Sharon /* 121301796ff2SSara Sharon * If this queue is already allocated but inactive we'll need to 121401796ff2SSara Sharon * first free this queue before enabling it again, we'll mark 121501796ff2SSara Sharon * it as reserved to make sure no new traffic arrives on it 121601796ff2SSara Sharon */ 121701796ff2SSara Sharon using_inactive_queue = true; 121801796ff2SSara Sharon same_sta = mvm->queue_info[queue].ra_sta_id == mvmsta->sta_id; 121924afba76SLiad Kaufman } 1220cf961e16SLiad Kaufman mvm->queue_info[queue].status = IWL_MVM_QUEUE_RESERVED; 122124afba76SLiad Kaufman 122224afba76SLiad Kaufman spin_unlock_bh(&mvm->queue_info_lock); 122324afba76SLiad Kaufman 122424afba76SLiad Kaufman mvmsta->reserved_queue = queue; 122524afba76SLiad Kaufman 122601796ff2SSara Sharon if (using_inactive_queue) 122701796ff2SSara Sharon iwl_mvm_free_inactive_queue(mvm, queue, same_sta); 122801796ff2SSara Sharon 122924afba76SLiad Kaufman IWL_DEBUG_TX_QUEUES(mvm, "Reserving data queue #%d for sta_id %d\n", 123024afba76SLiad Kaufman queue, mvmsta->sta_id); 123124afba76SLiad Kaufman 123224afba76SLiad Kaufman return 0; 123324afba76SLiad Kaufman } 123424afba76SLiad Kaufman 12358d98ae6eSLiad Kaufman /* 12368d98ae6eSLiad Kaufman * In DQA mode, after a HW restart the queues should be allocated as before, in 12378d98ae6eSLiad Kaufman * order to avoid race conditions when there are shared queues. This function 12388d98ae6eSLiad Kaufman * does the re-mapping and queue allocation. 12398d98ae6eSLiad Kaufman * 12408d98ae6eSLiad Kaufman * Note that re-enabling aggregations isn't done in this function. 12418d98ae6eSLiad Kaufman */ 12428d98ae6eSLiad Kaufman static void iwl_mvm_realloc_queues_after_restart(struct iwl_mvm *mvm, 12438d98ae6eSLiad Kaufman struct iwl_mvm_sta *mvm_sta) 12448d98ae6eSLiad Kaufman { 12458d98ae6eSLiad Kaufman unsigned int wdg_timeout = 12468d98ae6eSLiad Kaufman iwl_mvm_get_wd_timeout(mvm, mvm_sta->vif, false, false); 12478d98ae6eSLiad Kaufman int i; 12488d98ae6eSLiad Kaufman struct iwl_trans_txq_scd_cfg cfg = { 12498d98ae6eSLiad Kaufman .sta_id = mvm_sta->sta_id, 12508d98ae6eSLiad Kaufman .frame_limit = IWL_FRAME_LIMIT, 12518d98ae6eSLiad Kaufman }; 12528d98ae6eSLiad Kaufman 125303c902bfSJohannes Berg /* Make sure reserved queue is still marked as such (if allocated) */ 125403c902bfSJohannes Berg if (mvm_sta->reserved_queue != IEEE80211_INVAL_HW_QUEUE) 12558d98ae6eSLiad Kaufman mvm->queue_info[mvm_sta->reserved_queue].status = 12568d98ae6eSLiad Kaufman IWL_MVM_QUEUE_RESERVED; 12578d98ae6eSLiad Kaufman 12588d98ae6eSLiad Kaufman for (i = 0; i <= IWL_MAX_TID_COUNT; i++) { 12598d98ae6eSLiad Kaufman struct iwl_mvm_tid_data *tid_data = &mvm_sta->tid_data[i]; 12608d98ae6eSLiad Kaufman int txq_id = tid_data->txq_id; 12618d98ae6eSLiad Kaufman int ac; 12628d98ae6eSLiad Kaufman u8 mac_queue; 12638d98ae6eSLiad Kaufman 12648d98ae6eSLiad Kaufman if (txq_id == IEEE80211_INVAL_HW_QUEUE) 12658d98ae6eSLiad Kaufman continue; 12668d98ae6eSLiad Kaufman 12678d98ae6eSLiad Kaufman skb_queue_head_init(&tid_data->deferred_tx_frames); 12688d98ae6eSLiad Kaufman 12698d98ae6eSLiad Kaufman ac = tid_to_mac80211_ac[i]; 12708d98ae6eSLiad Kaufman mac_queue = mvm_sta->vif->hw_queue[ac]; 12718d98ae6eSLiad Kaufman 1272310181ecSSara Sharon if (iwl_mvm_has_new_tx_api(mvm)) { 1273310181ecSSara Sharon IWL_DEBUG_TX_QUEUES(mvm, 1274310181ecSSara Sharon "Re-mapping sta %d tid %d\n", 1275310181ecSSara Sharon mvm_sta->sta_id, i); 1276310181ecSSara Sharon txq_id = iwl_mvm_tvqm_enable_txq(mvm, mac_queue, 1277310181ecSSara Sharon mvm_sta->sta_id, 1278310181ecSSara Sharon i, wdg_timeout); 1279310181ecSSara Sharon tid_data->txq_id = txq_id; 1280310181ecSSara Sharon } else { 1281310181ecSSara Sharon u16 seq = IEEE80211_SEQ_TO_SN(tid_data->seq_number); 1282310181ecSSara Sharon 12838d98ae6eSLiad Kaufman cfg.tid = i; 12848d98ae6eSLiad Kaufman cfg.fifo = iwl_mvm_ac_to_tx_fifo[ac]; 12858d98ae6eSLiad Kaufman cfg.aggregate = (txq_id >= IWL_MVM_DQA_MIN_DATA_QUEUE || 1286310181ecSSara Sharon txq_id == 1287310181ecSSara Sharon IWL_MVM_DQA_BSS_CLIENT_QUEUE); 12888d98ae6eSLiad Kaufman 12898d98ae6eSLiad Kaufman IWL_DEBUG_TX_QUEUES(mvm, 12908d98ae6eSLiad Kaufman "Re-mapping sta %d tid %d to queue %d\n", 12918d98ae6eSLiad Kaufman mvm_sta->sta_id, i, txq_id); 12928d98ae6eSLiad Kaufman 1293310181ecSSara Sharon iwl_mvm_enable_txq(mvm, txq_id, mac_queue, seq, &cfg, 1294310181ecSSara Sharon wdg_timeout); 1295310181ecSSara Sharon } 12968d98ae6eSLiad Kaufman 12978d98ae6eSLiad Kaufman mvm->queue_info[txq_id].status = IWL_MVM_QUEUE_READY; 12988d98ae6eSLiad Kaufman } 12998d98ae6eSLiad Kaufman 13008d98ae6eSLiad Kaufman atomic_set(&mvm->pending_frames[mvm_sta->sta_id], 0); 13018d98ae6eSLiad Kaufman } 13028d98ae6eSLiad Kaufman 1303e705c121SKalle Valo int iwl_mvm_add_sta(struct iwl_mvm *mvm, 1304e705c121SKalle Valo struct ieee80211_vif *vif, 1305e705c121SKalle Valo struct ieee80211_sta *sta) 1306e705c121SKalle Valo { 1307e705c121SKalle Valo struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 1308e705c121SKalle Valo struct iwl_mvm_sta *mvm_sta = iwl_mvm_sta_from_mac80211(sta); 1309a571f5f6SSara Sharon struct iwl_mvm_rxq_dup_data *dup_data; 1310e705c121SKalle Valo int i, ret, sta_id; 1311e705c121SKalle Valo 1312e705c121SKalle Valo lockdep_assert_held(&mvm->mutex); 1313e705c121SKalle Valo 1314e705c121SKalle Valo if (!test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status)) 1315e705c121SKalle Valo sta_id = iwl_mvm_find_free_sta_id(mvm, 1316e705c121SKalle Valo ieee80211_vif_type_p2p(vif)); 1317e705c121SKalle Valo else 1318e705c121SKalle Valo sta_id = mvm_sta->sta_id; 1319e705c121SKalle Valo 13200ae98812SSara Sharon if (sta_id == IWL_MVM_INVALID_STA) 1321e705c121SKalle Valo return -ENOSPC; 1322e705c121SKalle Valo 1323e705c121SKalle Valo spin_lock_init(&mvm_sta->lock); 1324e705c121SKalle Valo 13258d98ae6eSLiad Kaufman /* In DQA mode, if this is a HW restart, re-alloc existing queues */ 13268d98ae6eSLiad Kaufman if (iwl_mvm_is_dqa_supported(mvm) && 13278d98ae6eSLiad Kaufman test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status)) { 13288d98ae6eSLiad Kaufman iwl_mvm_realloc_queues_after_restart(mvm, mvm_sta); 13298d98ae6eSLiad Kaufman goto update_fw; 13308d98ae6eSLiad Kaufman } 13318d98ae6eSLiad Kaufman 1332e705c121SKalle Valo mvm_sta->sta_id = sta_id; 1333e705c121SKalle Valo mvm_sta->mac_id_n_color = FW_CMD_ID_AND_COLOR(mvmvif->id, 1334e705c121SKalle Valo mvmvif->color); 1335e705c121SKalle Valo mvm_sta->vif = vif; 1336e705c121SKalle Valo mvm_sta->max_agg_bufsize = LINK_QUAL_AGG_FRAME_LIMIT_DEF; 1337e705c121SKalle Valo mvm_sta->tx_protection = 0; 1338e705c121SKalle Valo mvm_sta->tt_tx_protection = false; 1339e705c121SKalle Valo 1340e705c121SKalle Valo /* HW restart, don't assume the memory has been zeroed */ 1341e705c121SKalle Valo atomic_set(&mvm->pending_frames[sta_id], 0); 1342e705c121SKalle Valo mvm_sta->tid_disable_agg = 0xffff; /* No aggs at first */ 1343e705c121SKalle Valo mvm_sta->tfd_queue_msk = 0; 1344e705c121SKalle Valo 1345e3118ad7SLiad Kaufman /* 1346e3118ad7SLiad Kaufman * Allocate new queues for a TDLS station, unless we're in DQA mode, 1347e3118ad7SLiad Kaufman * and then they'll be allocated dynamically 1348e3118ad7SLiad Kaufman */ 1349e3118ad7SLiad Kaufman if (!iwl_mvm_is_dqa_supported(mvm) && sta->tdls) { 1350e705c121SKalle Valo ret = iwl_mvm_tdls_sta_init(mvm, sta); 1351e705c121SKalle Valo if (ret) 1352e705c121SKalle Valo return ret; 135324afba76SLiad Kaufman } else if (!iwl_mvm_is_dqa_supported(mvm)) { 1354e705c121SKalle Valo for (i = 0; i < IEEE80211_NUM_ACS; i++) 1355e705c121SKalle Valo if (vif->hw_queue[i] != IEEE80211_INVAL_HW_QUEUE) 1356e705c121SKalle Valo mvm_sta->tfd_queue_msk |= BIT(vif->hw_queue[i]); 1357e705c121SKalle Valo } 1358e705c121SKalle Valo 1359e705c121SKalle Valo /* for HW restart - reset everything but the sequence number */ 136024afba76SLiad Kaufman for (i = 0; i <= IWL_MAX_TID_COUNT; i++) { 1361e705c121SKalle Valo u16 seq = mvm_sta->tid_data[i].seq_number; 1362e705c121SKalle Valo memset(&mvm_sta->tid_data[i], 0, sizeof(mvm_sta->tid_data[i])); 1363e705c121SKalle Valo mvm_sta->tid_data[i].seq_number = seq; 136424afba76SLiad Kaufman 136524afba76SLiad Kaufman if (!iwl_mvm_is_dqa_supported(mvm)) 136624afba76SLiad Kaufman continue; 136724afba76SLiad Kaufman 136824afba76SLiad Kaufman /* 136924afba76SLiad Kaufman * Mark all queues for this STA as unallocated and defer TX 137024afba76SLiad Kaufman * frames until the queue is allocated 137124afba76SLiad Kaufman */ 137224afba76SLiad Kaufman mvm_sta->tid_data[i].txq_id = IEEE80211_INVAL_HW_QUEUE; 137324afba76SLiad Kaufman skb_queue_head_init(&mvm_sta->tid_data[i].deferred_tx_frames); 1374e705c121SKalle Valo } 137524afba76SLiad Kaufman mvm_sta->deferred_traffic_tid_map = 0; 1376e705c121SKalle Valo mvm_sta->agg_tids = 0; 1377e705c121SKalle Valo 1378a571f5f6SSara Sharon if (iwl_mvm_has_new_rx_api(mvm) && 1379a571f5f6SSara Sharon !test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status)) { 1380a571f5f6SSara Sharon dup_data = kcalloc(mvm->trans->num_rx_queues, 1381a571f5f6SSara Sharon sizeof(*dup_data), 1382a571f5f6SSara Sharon GFP_KERNEL); 1383a571f5f6SSara Sharon if (!dup_data) 1384a571f5f6SSara Sharon return -ENOMEM; 1385a571f5f6SSara Sharon mvm_sta->dup_data = dup_data; 1386a571f5f6SSara Sharon } 1387a571f5f6SSara Sharon 138824afba76SLiad Kaufman if (iwl_mvm_is_dqa_supported(mvm)) { 1389d5216a28SLiad Kaufman ret = iwl_mvm_reserve_sta_stream(mvm, sta, 1390d5216a28SLiad Kaufman ieee80211_vif_type_p2p(vif)); 139124afba76SLiad Kaufman if (ret) 139224afba76SLiad Kaufman goto err; 139324afba76SLiad Kaufman } 139424afba76SLiad Kaufman 13958d98ae6eSLiad Kaufman update_fw: 139624afba76SLiad Kaufman ret = iwl_mvm_sta_send_to_fw(mvm, sta, false, 0); 1397e705c121SKalle Valo if (ret) 1398e705c121SKalle Valo goto err; 1399e705c121SKalle Valo 1400e705c121SKalle Valo if (vif->type == NL80211_IFTYPE_STATION) { 1401e705c121SKalle Valo if (!sta->tdls) { 14020ae98812SSara Sharon WARN_ON(mvmvif->ap_sta_id != IWL_MVM_INVALID_STA); 1403e705c121SKalle Valo mvmvif->ap_sta_id = sta_id; 1404e705c121SKalle Valo } else { 14050ae98812SSara Sharon WARN_ON(mvmvif->ap_sta_id == IWL_MVM_INVALID_STA); 1406e705c121SKalle Valo } 1407e705c121SKalle Valo } 1408e705c121SKalle Valo 1409e705c121SKalle Valo rcu_assign_pointer(mvm->fw_id_to_mac_id[sta_id], sta); 1410e705c121SKalle Valo 1411e705c121SKalle Valo return 0; 1412e705c121SKalle Valo 1413e705c121SKalle Valo err: 1414e3118ad7SLiad Kaufman if (!iwl_mvm_is_dqa_supported(mvm) && sta->tdls) 1415e705c121SKalle Valo iwl_mvm_tdls_sta_deinit(mvm, sta); 1416e705c121SKalle Valo return ret; 1417e705c121SKalle Valo } 1418e705c121SKalle Valo 1419e705c121SKalle Valo int iwl_mvm_drain_sta(struct iwl_mvm *mvm, struct iwl_mvm_sta *mvmsta, 1420e705c121SKalle Valo bool drain) 1421e705c121SKalle Valo { 1422e705c121SKalle Valo struct iwl_mvm_add_sta_cmd cmd = {}; 1423e705c121SKalle Valo int ret; 1424e705c121SKalle Valo u32 status; 1425e705c121SKalle Valo 1426e705c121SKalle Valo lockdep_assert_held(&mvm->mutex); 1427e705c121SKalle Valo 1428e705c121SKalle Valo cmd.mac_id_n_color = cpu_to_le32(mvmsta->mac_id_n_color); 1429e705c121SKalle Valo cmd.sta_id = mvmsta->sta_id; 1430e705c121SKalle Valo cmd.add_modify = STA_MODE_MODIFY; 1431e705c121SKalle Valo cmd.station_flags = drain ? cpu_to_le32(STA_FLG_DRAIN_FLOW) : 0; 1432e705c121SKalle Valo cmd.station_flags_msk = cpu_to_le32(STA_FLG_DRAIN_FLOW); 1433e705c121SKalle Valo 1434e705c121SKalle Valo status = ADD_STA_SUCCESS; 1435854c5705SSara Sharon ret = iwl_mvm_send_cmd_pdu_status(mvm, ADD_STA, 1436854c5705SSara Sharon iwl_mvm_add_sta_cmd_size(mvm), 1437e705c121SKalle Valo &cmd, &status); 1438e705c121SKalle Valo if (ret) 1439e705c121SKalle Valo return ret; 1440e705c121SKalle Valo 1441837c4da9SSara Sharon switch (status & IWL_ADD_STA_STATUS_MASK) { 1442e705c121SKalle Valo case ADD_STA_SUCCESS: 1443e705c121SKalle Valo IWL_DEBUG_INFO(mvm, "Frames for staid %d will drained in fw\n", 1444e705c121SKalle Valo mvmsta->sta_id); 1445e705c121SKalle Valo break; 1446e705c121SKalle Valo default: 1447e705c121SKalle Valo ret = -EIO; 1448e705c121SKalle Valo IWL_ERR(mvm, "Couldn't drain frames for staid %d\n", 1449e705c121SKalle Valo mvmsta->sta_id); 1450e705c121SKalle Valo break; 1451e705c121SKalle Valo } 1452e705c121SKalle Valo 1453e705c121SKalle Valo return ret; 1454e705c121SKalle Valo } 1455e705c121SKalle Valo 1456e705c121SKalle Valo /* 1457e705c121SKalle Valo * Remove a station from the FW table. Before sending the command to remove 1458e705c121SKalle Valo * the station validate that the station is indeed known to the driver (sanity 1459e705c121SKalle Valo * only). 1460e705c121SKalle Valo */ 1461e705c121SKalle Valo static int iwl_mvm_rm_sta_common(struct iwl_mvm *mvm, u8 sta_id) 1462e705c121SKalle Valo { 1463e705c121SKalle Valo struct ieee80211_sta *sta; 1464e705c121SKalle Valo struct iwl_mvm_rm_sta_cmd rm_sta_cmd = { 1465e705c121SKalle Valo .sta_id = sta_id, 1466e705c121SKalle Valo }; 1467e705c121SKalle Valo int ret; 1468e705c121SKalle Valo 1469e705c121SKalle Valo sta = rcu_dereference_protected(mvm->fw_id_to_mac_id[sta_id], 1470e705c121SKalle Valo lockdep_is_held(&mvm->mutex)); 1471e705c121SKalle Valo 1472e705c121SKalle Valo /* Note: internal stations are marked as error values */ 1473e705c121SKalle Valo if (!sta) { 1474e705c121SKalle Valo IWL_ERR(mvm, "Invalid station id\n"); 1475e705c121SKalle Valo return -EINVAL; 1476e705c121SKalle Valo } 1477e705c121SKalle Valo 1478e705c121SKalle Valo ret = iwl_mvm_send_cmd_pdu(mvm, REMOVE_STA, 0, 1479e705c121SKalle Valo sizeof(rm_sta_cmd), &rm_sta_cmd); 1480e705c121SKalle Valo if (ret) { 1481e705c121SKalle Valo IWL_ERR(mvm, "Failed to remove station. Id=%d\n", sta_id); 1482e705c121SKalle Valo return ret; 1483e705c121SKalle Valo } 1484e705c121SKalle Valo 1485e705c121SKalle Valo return 0; 1486e705c121SKalle Valo } 1487e705c121SKalle Valo 1488e705c121SKalle Valo void iwl_mvm_sta_drained_wk(struct work_struct *wk) 1489e705c121SKalle Valo { 1490e705c121SKalle Valo struct iwl_mvm *mvm = container_of(wk, struct iwl_mvm, sta_drained_wk); 1491e705c121SKalle Valo u8 sta_id; 1492e705c121SKalle Valo 1493e705c121SKalle Valo /* 1494e705c121SKalle Valo * The mutex is needed because of the SYNC cmd, but not only: if the 1495e705c121SKalle Valo * work would run concurrently with iwl_mvm_rm_sta, it would run before 1496e705c121SKalle Valo * iwl_mvm_rm_sta sets the station as busy, and exit. Then 1497e705c121SKalle Valo * iwl_mvm_rm_sta would set the station as busy, and nobody will clean 1498e705c121SKalle Valo * that later. 1499e705c121SKalle Valo */ 1500e705c121SKalle Valo mutex_lock(&mvm->mutex); 1501e705c121SKalle Valo 1502e705c121SKalle Valo for_each_set_bit(sta_id, mvm->sta_drained, IWL_MVM_STATION_COUNT) { 1503e705c121SKalle Valo int ret; 1504e705c121SKalle Valo struct ieee80211_sta *sta = 1505e705c121SKalle Valo rcu_dereference_protected(mvm->fw_id_to_mac_id[sta_id], 1506e705c121SKalle Valo lockdep_is_held(&mvm->mutex)); 1507e705c121SKalle Valo 1508e705c121SKalle Valo /* 1509e705c121SKalle Valo * This station is in use or RCU-removed; the latter happens in 1510e705c121SKalle Valo * managed mode, where mac80211 removes the station before we 1511e705c121SKalle Valo * can remove it from firmware (we can only do that after the 1512e705c121SKalle Valo * MAC is marked unassociated), and possibly while the deauth 1513e705c121SKalle Valo * frame to disconnect from the AP is still queued. Then, the 1514e705c121SKalle Valo * station pointer is -ENOENT when the last skb is reclaimed. 1515e705c121SKalle Valo */ 1516e705c121SKalle Valo if (!IS_ERR(sta) || PTR_ERR(sta) == -ENOENT) 1517e705c121SKalle Valo continue; 1518e705c121SKalle Valo 1519e705c121SKalle Valo if (PTR_ERR(sta) == -EINVAL) { 1520e705c121SKalle Valo IWL_ERR(mvm, "Drained sta %d, but it is internal?\n", 1521e705c121SKalle Valo sta_id); 1522e705c121SKalle Valo continue; 1523e705c121SKalle Valo } 1524e705c121SKalle Valo 1525e705c121SKalle Valo if (!sta) { 1526e705c121SKalle Valo IWL_ERR(mvm, "Drained sta %d, but it was NULL?\n", 1527e705c121SKalle Valo sta_id); 1528e705c121SKalle Valo continue; 1529e705c121SKalle Valo } 1530e705c121SKalle Valo 1531e705c121SKalle Valo WARN_ON(PTR_ERR(sta) != -EBUSY); 1532e705c121SKalle Valo /* This station was removed and we waited until it got drained, 1533e705c121SKalle Valo * we can now proceed and remove it. 1534e705c121SKalle Valo */ 1535e705c121SKalle Valo ret = iwl_mvm_rm_sta_common(mvm, sta_id); 1536e705c121SKalle Valo if (ret) { 1537e705c121SKalle Valo IWL_ERR(mvm, 1538e705c121SKalle Valo "Couldn't remove sta %d after it was drained\n", 1539e705c121SKalle Valo sta_id); 1540e705c121SKalle Valo continue; 1541e705c121SKalle Valo } 1542e705c121SKalle Valo RCU_INIT_POINTER(mvm->fw_id_to_mac_id[sta_id], NULL); 1543e705c121SKalle Valo clear_bit(sta_id, mvm->sta_drained); 1544e705c121SKalle Valo 1545e705c121SKalle Valo if (mvm->tfd_drained[sta_id]) { 1546e705c121SKalle Valo unsigned long i, msk = mvm->tfd_drained[sta_id]; 1547e705c121SKalle Valo 1548e705c121SKalle Valo for_each_set_bit(i, &msk, sizeof(msk) * BITS_PER_BYTE) 1549e705c121SKalle Valo iwl_mvm_disable_txq(mvm, i, i, 1550e705c121SKalle Valo IWL_MAX_TID_COUNT, 0); 1551e705c121SKalle Valo 1552e705c121SKalle Valo mvm->tfd_drained[sta_id] = 0; 1553e705c121SKalle Valo IWL_DEBUG_TDLS(mvm, "Drained sta %d, with queues %ld\n", 1554e705c121SKalle Valo sta_id, msk); 1555e705c121SKalle Valo } 1556e705c121SKalle Valo } 1557e705c121SKalle Valo 1558e705c121SKalle Valo mutex_unlock(&mvm->mutex); 1559e705c121SKalle Valo } 1560e705c121SKalle Valo 156124afba76SLiad Kaufman static void iwl_mvm_disable_sta_queues(struct iwl_mvm *mvm, 156224afba76SLiad Kaufman struct ieee80211_vif *vif, 156324afba76SLiad Kaufman struct iwl_mvm_sta *mvm_sta) 156424afba76SLiad Kaufman { 156524afba76SLiad Kaufman int ac; 156624afba76SLiad Kaufman int i; 156724afba76SLiad Kaufman 156824afba76SLiad Kaufman lockdep_assert_held(&mvm->mutex); 156924afba76SLiad Kaufman 157024afba76SLiad Kaufman for (i = 0; i < ARRAY_SIZE(mvm_sta->tid_data); i++) { 157124afba76SLiad Kaufman if (mvm_sta->tid_data[i].txq_id == IEEE80211_INVAL_HW_QUEUE) 157224afba76SLiad Kaufman continue; 157324afba76SLiad Kaufman 157424afba76SLiad Kaufman ac = iwl_mvm_tid_to_ac_queue(i); 157524afba76SLiad Kaufman iwl_mvm_disable_txq(mvm, mvm_sta->tid_data[i].txq_id, 157624afba76SLiad Kaufman vif->hw_queue[ac], i, 0); 157724afba76SLiad Kaufman mvm_sta->tid_data[i].txq_id = IEEE80211_INVAL_HW_QUEUE; 157824afba76SLiad Kaufman } 157924afba76SLiad Kaufman } 158024afba76SLiad Kaufman 1581e705c121SKalle Valo int iwl_mvm_rm_sta(struct iwl_mvm *mvm, 1582e705c121SKalle Valo struct ieee80211_vif *vif, 1583e705c121SKalle Valo struct ieee80211_sta *sta) 1584e705c121SKalle Valo { 1585e705c121SKalle Valo struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 1586e705c121SKalle Valo struct iwl_mvm_sta *mvm_sta = iwl_mvm_sta_from_mac80211(sta); 158794c3e614SSara Sharon u8 sta_id = mvm_sta->sta_id; 1588e705c121SKalle Valo int ret; 1589e705c121SKalle Valo 1590e705c121SKalle Valo lockdep_assert_held(&mvm->mutex); 1591e705c121SKalle Valo 1592a571f5f6SSara Sharon if (iwl_mvm_has_new_rx_api(mvm)) 1593a571f5f6SSara Sharon kfree(mvm_sta->dup_data); 1594a571f5f6SSara Sharon 1595a6f035a0SLiad Kaufman if ((vif->type == NL80211_IFTYPE_STATION && 159694c3e614SSara Sharon mvmvif->ap_sta_id == sta_id) || 1597a6f035a0SLiad Kaufman iwl_mvm_is_dqa_supported(mvm)){ 1598e705c121SKalle Valo ret = iwl_mvm_drain_sta(mvm, mvm_sta, true); 1599e705c121SKalle Valo if (ret) 1600e705c121SKalle Valo return ret; 1601e705c121SKalle Valo /* flush its queues here since we are freeing mvm_sta */ 1602e705c121SKalle Valo ret = iwl_mvm_flush_tx_path(mvm, mvm_sta->tfd_queue_msk, 0); 1603e705c121SKalle Valo if (ret) 1604e705c121SKalle Valo return ret; 1605e705c121SKalle Valo ret = iwl_trans_wait_tx_queue_empty(mvm->trans, 1606e705c121SKalle Valo mvm_sta->tfd_queue_msk); 1607e705c121SKalle Valo if (ret) 1608e705c121SKalle Valo return ret; 1609e705c121SKalle Valo ret = iwl_mvm_drain_sta(mvm, mvm_sta, false); 1610e705c121SKalle Valo 161124afba76SLiad Kaufman /* If DQA is supported - the queues can be disabled now */ 161294c3e614SSara Sharon if (iwl_mvm_is_dqa_supported(mvm)) { 161356214749SLiad Kaufman iwl_mvm_disable_sta_queues(mvm, vif, mvm_sta); 161494c3e614SSara Sharon /* 161594c3e614SSara Sharon * If pending_frames is set at this point - it must be 161694c3e614SSara Sharon * driver internal logic error, since queues are empty 161794c3e614SSara Sharon * and removed successuly. 161894c3e614SSara Sharon * warn on it but set it to 0 anyway to avoid station 161994c3e614SSara Sharon * not being removed later in the function 162094c3e614SSara Sharon */ 162194c3e614SSara Sharon WARN_ON(atomic_xchg(&mvm->pending_frames[sta_id], 0)); 162294c3e614SSara Sharon } 162356214749SLiad Kaufman 162456214749SLiad Kaufman /* If there is a TXQ still marked as reserved - free it */ 162556214749SLiad Kaufman if (iwl_mvm_is_dqa_supported(mvm) && 162656214749SLiad Kaufman mvm_sta->reserved_queue != IEEE80211_INVAL_HW_QUEUE) { 1627a0315deaSLiad Kaufman u8 reserved_txq = mvm_sta->reserved_queue; 1628a0315deaSLiad Kaufman enum iwl_mvm_queue_status *status; 1629a0315deaSLiad Kaufman 1630a0315deaSLiad Kaufman /* 1631a0315deaSLiad Kaufman * If no traffic has gone through the reserved TXQ - it 1632a0315deaSLiad Kaufman * is still marked as IWL_MVM_QUEUE_RESERVED, and 1633a0315deaSLiad Kaufman * should be manually marked as free again 1634a0315deaSLiad Kaufman */ 1635a0315deaSLiad Kaufman spin_lock_bh(&mvm->queue_info_lock); 1636a0315deaSLiad Kaufman status = &mvm->queue_info[reserved_txq].status; 1637a0315deaSLiad Kaufman if (WARN((*status != IWL_MVM_QUEUE_RESERVED) && 1638a0315deaSLiad Kaufman (*status != IWL_MVM_QUEUE_FREE), 1639a0315deaSLiad Kaufman "sta_id %d reserved txq %d status %d", 164094c3e614SSara Sharon sta_id, reserved_txq, *status)) { 1641a0315deaSLiad Kaufman spin_unlock_bh(&mvm->queue_info_lock); 1642a0315deaSLiad Kaufman return -EINVAL; 1643a0315deaSLiad Kaufman } 1644a0315deaSLiad Kaufman 1645a0315deaSLiad Kaufman *status = IWL_MVM_QUEUE_FREE; 1646a0315deaSLiad Kaufman spin_unlock_bh(&mvm->queue_info_lock); 1647a0315deaSLiad Kaufman } 1648a0315deaSLiad Kaufman 1649e3118ad7SLiad Kaufman if (vif->type == NL80211_IFTYPE_STATION && 165094c3e614SSara Sharon mvmvif->ap_sta_id == sta_id) { 1651e3118ad7SLiad Kaufman /* if associated - we can't remove the AP STA now */ 1652e705c121SKalle Valo if (vif->bss_conf.assoc) 1653e705c121SKalle Valo return ret; 1654e705c121SKalle Valo 1655e705c121SKalle Valo /* unassoc - go ahead - remove the AP STA now */ 16560ae98812SSara Sharon mvmvif->ap_sta_id = IWL_MVM_INVALID_STA; 1657e705c121SKalle Valo 1658e705c121SKalle Valo /* clear d0i3_ap_sta_id if no longer relevant */ 165994c3e614SSara Sharon if (mvm->d0i3_ap_sta_id == sta_id) 16600ae98812SSara Sharon mvm->d0i3_ap_sta_id = IWL_MVM_INVALID_STA; 1661e705c121SKalle Valo } 1662e3118ad7SLiad Kaufman } 1663e705c121SKalle Valo 1664e705c121SKalle Valo /* 1665e705c121SKalle Valo * This shouldn't happen - the TDLS channel switch should be canceled 1666e705c121SKalle Valo * before the STA is removed. 1667e705c121SKalle Valo */ 166894c3e614SSara Sharon if (WARN_ON_ONCE(mvm->tdls_cs.peer.sta_id == sta_id)) { 16690ae98812SSara Sharon mvm->tdls_cs.peer.sta_id = IWL_MVM_INVALID_STA; 1670e705c121SKalle Valo cancel_delayed_work(&mvm->tdls_cs.dwork); 1671e705c121SKalle Valo } 1672e705c121SKalle Valo 1673e705c121SKalle Valo /* 1674e705c121SKalle Valo * Make sure that the tx response code sees the station as -EBUSY and 1675e705c121SKalle Valo * calls the drain worker. 1676e705c121SKalle Valo */ 1677e705c121SKalle Valo spin_lock_bh(&mvm_sta->lock); 167894c3e614SSara Sharon 1679e705c121SKalle Valo /* 1680e705c121SKalle Valo * There are frames pending on the AC queues for this station. 1681e705c121SKalle Valo * We need to wait until all the frames are drained... 1682e705c121SKalle Valo */ 168394c3e614SSara Sharon if (atomic_read(&mvm->pending_frames[sta_id])) { 168494c3e614SSara Sharon rcu_assign_pointer(mvm->fw_id_to_mac_id[sta_id], 1685e705c121SKalle Valo ERR_PTR(-EBUSY)); 1686e705c121SKalle Valo spin_unlock_bh(&mvm_sta->lock); 1687e705c121SKalle Valo 1688e705c121SKalle Valo /* disable TDLS sta queues on drain complete */ 1689e705c121SKalle Valo if (sta->tdls) { 169094c3e614SSara Sharon mvm->tfd_drained[sta_id] = mvm_sta->tfd_queue_msk; 169194c3e614SSara Sharon IWL_DEBUG_TDLS(mvm, "Draining TDLS sta %d\n", sta_id); 1692e705c121SKalle Valo } 1693e705c121SKalle Valo 1694e705c121SKalle Valo ret = iwl_mvm_drain_sta(mvm, mvm_sta, true); 1695e705c121SKalle Valo } else { 1696e705c121SKalle Valo spin_unlock_bh(&mvm_sta->lock); 1697e705c121SKalle Valo 1698e3118ad7SLiad Kaufman if (!iwl_mvm_is_dqa_supported(mvm) && sta->tdls) 1699e705c121SKalle Valo iwl_mvm_tdls_sta_deinit(mvm, sta); 1700e705c121SKalle Valo 1701e705c121SKalle Valo ret = iwl_mvm_rm_sta_common(mvm, mvm_sta->sta_id); 1702e705c121SKalle Valo RCU_INIT_POINTER(mvm->fw_id_to_mac_id[mvm_sta->sta_id], NULL); 1703e705c121SKalle Valo } 1704e705c121SKalle Valo 1705e705c121SKalle Valo return ret; 1706e705c121SKalle Valo } 1707e705c121SKalle Valo 1708e705c121SKalle Valo int iwl_mvm_rm_sta_id(struct iwl_mvm *mvm, 1709e705c121SKalle Valo struct ieee80211_vif *vif, 1710e705c121SKalle Valo u8 sta_id) 1711e705c121SKalle Valo { 1712e705c121SKalle Valo int ret = iwl_mvm_rm_sta_common(mvm, sta_id); 1713e705c121SKalle Valo 1714e705c121SKalle Valo lockdep_assert_held(&mvm->mutex); 1715e705c121SKalle Valo 1716e705c121SKalle Valo RCU_INIT_POINTER(mvm->fw_id_to_mac_id[sta_id], NULL); 1717e705c121SKalle Valo return ret; 1718e705c121SKalle Valo } 1719e705c121SKalle Valo 17200e39eb03SChaya Rachel Ivgi int iwl_mvm_allocate_int_sta(struct iwl_mvm *mvm, 1721e705c121SKalle Valo struct iwl_mvm_int_sta *sta, 1722e705c121SKalle Valo u32 qmask, enum nl80211_iftype iftype) 1723e705c121SKalle Valo { 1724e705c121SKalle Valo if (!test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status)) { 1725e705c121SKalle Valo sta->sta_id = iwl_mvm_find_free_sta_id(mvm, iftype); 17260ae98812SSara Sharon if (WARN_ON_ONCE(sta->sta_id == IWL_MVM_INVALID_STA)) 1727e705c121SKalle Valo return -ENOSPC; 1728e705c121SKalle Valo } 1729e705c121SKalle Valo 1730e705c121SKalle Valo sta->tfd_queue_msk = qmask; 1731e705c121SKalle Valo 1732e705c121SKalle Valo /* put a non-NULL value so iterating over the stations won't stop */ 1733e705c121SKalle Valo rcu_assign_pointer(mvm->fw_id_to_mac_id[sta->sta_id], ERR_PTR(-EINVAL)); 1734e705c121SKalle Valo return 0; 1735e705c121SKalle Valo } 1736e705c121SKalle Valo 173726d6c16bSSara Sharon void iwl_mvm_dealloc_int_sta(struct iwl_mvm *mvm, struct iwl_mvm_int_sta *sta) 1738e705c121SKalle Valo { 1739e705c121SKalle Valo RCU_INIT_POINTER(mvm->fw_id_to_mac_id[sta->sta_id], NULL); 1740e705c121SKalle Valo memset(sta, 0, sizeof(struct iwl_mvm_int_sta)); 17410ae98812SSara Sharon sta->sta_id = IWL_MVM_INVALID_STA; 1742e705c121SKalle Valo } 1743e705c121SKalle Valo 1744e705c121SKalle Valo static int iwl_mvm_add_int_sta_common(struct iwl_mvm *mvm, 1745e705c121SKalle Valo struct iwl_mvm_int_sta *sta, 1746e705c121SKalle Valo const u8 *addr, 1747e705c121SKalle Valo u16 mac_id, u16 color) 1748e705c121SKalle Valo { 1749e705c121SKalle Valo struct iwl_mvm_add_sta_cmd cmd; 1750e705c121SKalle Valo int ret; 1751e705c121SKalle Valo u32 status; 1752e705c121SKalle Valo 1753e705c121SKalle Valo lockdep_assert_held(&mvm->mutex); 1754e705c121SKalle Valo 1755e705c121SKalle Valo memset(&cmd, 0, sizeof(cmd)); 1756e705c121SKalle Valo cmd.sta_id = sta->sta_id; 1757e705c121SKalle Valo cmd.mac_id_n_color = cpu_to_le32(FW_CMD_ID_AND_COLOR(mac_id, 1758e705c121SKalle Valo color)); 1759e705c121SKalle Valo 1760bb49701bSSara Sharon if (!iwl_mvm_has_new_tx_api(mvm)) 1761e705c121SKalle Valo cmd.tfd_queue_msk = cpu_to_le32(sta->tfd_queue_msk); 1762cf0cda19SLiad Kaufman cmd.tid_disable_tx = cpu_to_le16(0xffff); 1763e705c121SKalle Valo 1764e705c121SKalle Valo if (addr) 1765e705c121SKalle Valo memcpy(cmd.addr, addr, ETH_ALEN); 1766e705c121SKalle Valo 1767854c5705SSara Sharon ret = iwl_mvm_send_cmd_pdu_status(mvm, ADD_STA, 1768854c5705SSara Sharon iwl_mvm_add_sta_cmd_size(mvm), 1769e705c121SKalle Valo &cmd, &status); 1770e705c121SKalle Valo if (ret) 1771e705c121SKalle Valo return ret; 1772e705c121SKalle Valo 1773837c4da9SSara Sharon switch (status & IWL_ADD_STA_STATUS_MASK) { 1774e705c121SKalle Valo case ADD_STA_SUCCESS: 1775e705c121SKalle Valo IWL_DEBUG_INFO(mvm, "Internal station added.\n"); 1776e705c121SKalle Valo return 0; 1777e705c121SKalle Valo default: 1778e705c121SKalle Valo ret = -EIO; 1779e705c121SKalle Valo IWL_ERR(mvm, "Add internal station failed, status=0x%x\n", 1780e705c121SKalle Valo status); 1781e705c121SKalle Valo break; 1782e705c121SKalle Valo } 1783e705c121SKalle Valo return ret; 1784e705c121SKalle Valo } 1785e705c121SKalle Valo 1786c5a719eeSSara Sharon static void iwl_mvm_enable_aux_queue(struct iwl_mvm *mvm) 1787e705c121SKalle Valo { 1788e705c121SKalle Valo unsigned int wdg_timeout = iwlmvm_mod_params.tfd_q_hang_detect ? 1789e705c121SKalle Valo mvm->cfg->base_params->wd_timeout : 1790e705c121SKalle Valo IWL_WATCHDOG_DISABLED; 1791e705c121SKalle Valo 1792310181ecSSara Sharon if (iwl_mvm_has_new_tx_api(mvm)) { 1793310181ecSSara Sharon int queue = iwl_mvm_tvqm_enable_txq(mvm, mvm->aux_queue, 1794310181ecSSara Sharon mvm->aux_sta.sta_id, 1795310181ecSSara Sharon IWL_MAX_TID_COUNT, 1796310181ecSSara Sharon wdg_timeout); 1797310181ecSSara Sharon mvm->aux_queue = queue; 1798310181ecSSara Sharon } else if (iwl_mvm_is_dqa_supported(mvm)) { 179928d0793eSLiad Kaufman struct iwl_trans_txq_scd_cfg cfg = { 180028d0793eSLiad Kaufman .fifo = IWL_MVM_TX_FIFO_MCAST, 180128d0793eSLiad Kaufman .sta_id = mvm->aux_sta.sta_id, 180228d0793eSLiad Kaufman .tid = IWL_MAX_TID_COUNT, 180328d0793eSLiad Kaufman .aggregate = false, 180428d0793eSLiad Kaufman .frame_limit = IWL_FRAME_LIMIT, 180528d0793eSLiad Kaufman }; 180628d0793eSLiad Kaufman 180728d0793eSLiad Kaufman iwl_mvm_enable_txq(mvm, mvm->aux_queue, mvm->aux_queue, 0, &cfg, 180828d0793eSLiad Kaufman wdg_timeout); 1809c5a719eeSSara Sharon } else { 1810c5a719eeSSara Sharon iwl_mvm_enable_ac_txq(mvm, mvm->aux_queue, mvm->aux_queue, 1811c5a719eeSSara Sharon IWL_MVM_TX_FIFO_MCAST, 0, wdg_timeout); 181228d0793eSLiad Kaufman } 1813c5a719eeSSara Sharon } 1814c5a719eeSSara Sharon 1815c5a719eeSSara Sharon int iwl_mvm_add_aux_sta(struct iwl_mvm *mvm) 1816c5a719eeSSara Sharon { 1817c5a719eeSSara Sharon int ret; 1818c5a719eeSSara Sharon 1819c5a719eeSSara Sharon lockdep_assert_held(&mvm->mutex); 1820c5a719eeSSara Sharon 1821c5a719eeSSara Sharon /* Allocate aux station and assign to it the aux queue */ 1822c5a719eeSSara Sharon ret = iwl_mvm_allocate_int_sta(mvm, &mvm->aux_sta, BIT(mvm->aux_queue), 1823c5a719eeSSara Sharon NL80211_IFTYPE_UNSPECIFIED); 1824c5a719eeSSara Sharon if (ret) 1825c5a719eeSSara Sharon return ret; 1826c5a719eeSSara Sharon 1827c5a719eeSSara Sharon /* Map Aux queue to fifo - needs to happen before adding Aux station */ 1828c5a719eeSSara Sharon if (!iwl_mvm_has_new_tx_api(mvm)) 1829c5a719eeSSara Sharon iwl_mvm_enable_aux_queue(mvm); 183028d0793eSLiad Kaufman 1831e705c121SKalle Valo ret = iwl_mvm_add_int_sta_common(mvm, &mvm->aux_sta, NULL, 1832e705c121SKalle Valo MAC_INDEX_AUX, 0); 1833c5a719eeSSara Sharon if (ret) { 1834e705c121SKalle Valo iwl_mvm_dealloc_int_sta(mvm, &mvm->aux_sta); 1835e705c121SKalle Valo return ret; 1836e705c121SKalle Valo } 1837e705c121SKalle Valo 1838c5a719eeSSara Sharon /* 1839c5a719eeSSara Sharon * For a000 firmware and on we cannot add queue to a station unknown 1840c5a719eeSSara Sharon * to firmware so enable queue here - after the station was added 1841c5a719eeSSara Sharon */ 1842c5a719eeSSara Sharon if (iwl_mvm_has_new_tx_api(mvm)) 1843c5a719eeSSara Sharon iwl_mvm_enable_aux_queue(mvm); 1844c5a719eeSSara Sharon 1845c5a719eeSSara Sharon return 0; 1846c5a719eeSSara Sharon } 1847c5a719eeSSara Sharon 18480e39eb03SChaya Rachel Ivgi int iwl_mvm_add_snif_sta(struct iwl_mvm *mvm, struct ieee80211_vif *vif) 18490e39eb03SChaya Rachel Ivgi { 18500e39eb03SChaya Rachel Ivgi struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 18510e39eb03SChaya Rachel Ivgi 18520e39eb03SChaya Rachel Ivgi lockdep_assert_held(&mvm->mutex); 18530e39eb03SChaya Rachel Ivgi return iwl_mvm_add_int_sta_common(mvm, &mvm->snif_sta, vif->addr, 18540e39eb03SChaya Rachel Ivgi mvmvif->id, 0); 18550e39eb03SChaya Rachel Ivgi } 18560e39eb03SChaya Rachel Ivgi 18570e39eb03SChaya Rachel Ivgi int iwl_mvm_rm_snif_sta(struct iwl_mvm *mvm, struct ieee80211_vif *vif) 18580e39eb03SChaya Rachel Ivgi { 18590e39eb03SChaya Rachel Ivgi int ret; 18600e39eb03SChaya Rachel Ivgi 18610e39eb03SChaya Rachel Ivgi lockdep_assert_held(&mvm->mutex); 18620e39eb03SChaya Rachel Ivgi 18630e39eb03SChaya Rachel Ivgi ret = iwl_mvm_rm_sta_common(mvm, mvm->snif_sta.sta_id); 18640e39eb03SChaya Rachel Ivgi if (ret) 18650e39eb03SChaya Rachel Ivgi IWL_WARN(mvm, "Failed sending remove station\n"); 18660e39eb03SChaya Rachel Ivgi 18670e39eb03SChaya Rachel Ivgi return ret; 18680e39eb03SChaya Rachel Ivgi } 18690e39eb03SChaya Rachel Ivgi 18700e39eb03SChaya Rachel Ivgi void iwl_mvm_dealloc_snif_sta(struct iwl_mvm *mvm) 18710e39eb03SChaya Rachel Ivgi { 18720e39eb03SChaya Rachel Ivgi iwl_mvm_dealloc_int_sta(mvm, &mvm->snif_sta); 18730e39eb03SChaya Rachel Ivgi } 18740e39eb03SChaya Rachel Ivgi 1875e705c121SKalle Valo void iwl_mvm_del_aux_sta(struct iwl_mvm *mvm) 1876e705c121SKalle Valo { 1877e705c121SKalle Valo lockdep_assert_held(&mvm->mutex); 1878e705c121SKalle Valo 1879e705c121SKalle Valo iwl_mvm_dealloc_int_sta(mvm, &mvm->aux_sta); 1880e705c121SKalle Valo } 1881e705c121SKalle Valo 1882e705c121SKalle Valo /* 1883e705c121SKalle Valo * Send the add station command for the vif's broadcast station. 1884e705c121SKalle Valo * Assumes that the station was already allocated. 1885e705c121SKalle Valo * 1886e705c121SKalle Valo * @mvm: the mvm component 1887e705c121SKalle Valo * @vif: the interface to which the broadcast station is added 1888e705c121SKalle Valo * @bsta: the broadcast station to add. 1889e705c121SKalle Valo */ 1890e705c121SKalle Valo int iwl_mvm_send_add_bcast_sta(struct iwl_mvm *mvm, struct ieee80211_vif *vif) 1891e705c121SKalle Valo { 1892e705c121SKalle Valo struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 1893e705c121SKalle Valo struct iwl_mvm_int_sta *bsta = &mvmvif->bcast_sta; 1894e705c121SKalle Valo static const u8 _baddr[] = {0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF}; 1895e705c121SKalle Valo const u8 *baddr = _baddr; 1896c5a719eeSSara Sharon int queue = 0; 1897df88c08dSLiad Kaufman int ret; 1898c5a719eeSSara Sharon unsigned int wdg_timeout = 1899c5a719eeSSara Sharon iwl_mvm_get_wd_timeout(mvm, vif, false, false); 1900de24f638SLiad Kaufman struct iwl_trans_txq_scd_cfg cfg = { 1901de24f638SLiad Kaufman .fifo = IWL_MVM_TX_FIFO_VO, 1902de24f638SLiad Kaufman .sta_id = mvmvif->bcast_sta.sta_id, 1903de24f638SLiad Kaufman .tid = IWL_MAX_TID_COUNT, 1904de24f638SLiad Kaufman .aggregate = false, 1905de24f638SLiad Kaufman .frame_limit = IWL_FRAME_LIMIT, 1906de24f638SLiad Kaufman }; 1907de24f638SLiad Kaufman 1908c5a719eeSSara Sharon lockdep_assert_held(&mvm->mutex); 1909c5a719eeSSara Sharon 1910310181ecSSara Sharon if (iwl_mvm_is_dqa_supported(mvm) && !iwl_mvm_has_new_tx_api(mvm)) { 19114d339989SLiad Kaufman if (vif->type == NL80211_IFTYPE_AP || 19124d339989SLiad Kaufman vif->type == NL80211_IFTYPE_ADHOC) 191349f71713SSara Sharon queue = mvm->probe_queue; 1914df88c08dSLiad Kaufman else if (vif->type == NL80211_IFTYPE_P2P_DEVICE) 191549f71713SSara Sharon queue = mvm->p2p_dev_queue; 1916df88c08dSLiad Kaufman else if (WARN(1, "Missing required TXQ for adding bcast STA\n")) 1917de24f638SLiad Kaufman return -EINVAL; 1918de24f638SLiad Kaufman 1919df88c08dSLiad Kaufman bsta->tfd_queue_msk |= BIT(queue); 1920c5a719eeSSara Sharon 1921c5a719eeSSara Sharon iwl_mvm_enable_txq(mvm, queue, vif->hw_queue[0], 0, 1922c5a719eeSSara Sharon &cfg, wdg_timeout); 1923de24f638SLiad Kaufman } 1924de24f638SLiad Kaufman 1925e705c121SKalle Valo if (vif->type == NL80211_IFTYPE_ADHOC) 1926e705c121SKalle Valo baddr = vif->bss_conf.bssid; 1927e705c121SKalle Valo 19280ae98812SSara Sharon if (WARN_ON_ONCE(bsta->sta_id == IWL_MVM_INVALID_STA)) 1929e705c121SKalle Valo return -ENOSPC; 1930e705c121SKalle Valo 1931df88c08dSLiad Kaufman ret = iwl_mvm_add_int_sta_common(mvm, bsta, baddr, 1932e705c121SKalle Valo mvmvif->id, mvmvif->color); 1933df88c08dSLiad Kaufman if (ret) 1934df88c08dSLiad Kaufman return ret; 1935df88c08dSLiad Kaufman 1936df88c08dSLiad Kaufman /* 1937c5a719eeSSara Sharon * For a000 firmware and on we cannot add queue to a station unknown 1938c5a719eeSSara Sharon * to firmware so enable queue here - after the station was added 1939df88c08dSLiad Kaufman */ 1940310181ecSSara Sharon if (iwl_mvm_has_new_tx_api(mvm)) { 1941310181ecSSara Sharon int queue = iwl_mvm_tvqm_enable_txq(mvm, vif->hw_queue[0], 1942310181ecSSara Sharon bsta->sta_id, 1943310181ecSSara Sharon IWL_MAX_TID_COUNT, 1944c5a719eeSSara Sharon wdg_timeout); 1945310181ecSSara Sharon if (vif->type == NL80211_IFTYPE_AP) 1946310181ecSSara Sharon mvm->probe_queue = queue; 1947310181ecSSara Sharon else if (vif->type == NL80211_IFTYPE_P2P_DEVICE) 1948310181ecSSara Sharon mvm->p2p_dev_queue = queue; 1949310181ecSSara Sharon 1950310181ecSSara Sharon bsta->tfd_queue_msk |= BIT(queue); 1951310181ecSSara Sharon } 1952df88c08dSLiad Kaufman 1953df88c08dSLiad Kaufman return 0; 1954df88c08dSLiad Kaufman } 1955df88c08dSLiad Kaufman 1956df88c08dSLiad Kaufman static void iwl_mvm_free_bcast_sta_queues(struct iwl_mvm *mvm, 1957df88c08dSLiad Kaufman struct ieee80211_vif *vif) 1958df88c08dSLiad Kaufman { 1959df88c08dSLiad Kaufman struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 1960df88c08dSLiad Kaufman 1961df88c08dSLiad Kaufman lockdep_assert_held(&mvm->mutex); 1962df88c08dSLiad Kaufman 19634d339989SLiad Kaufman if (vif->type == NL80211_IFTYPE_AP || 19644d339989SLiad Kaufman vif->type == NL80211_IFTYPE_ADHOC) 1965df88c08dSLiad Kaufman iwl_mvm_disable_txq(mvm, vif->cab_queue, vif->cab_queue, 1966df88c08dSLiad Kaufman IWL_MAX_TID_COUNT, 0); 1967df88c08dSLiad Kaufman 196849f71713SSara Sharon if (mvmvif->bcast_sta.tfd_queue_msk & BIT(mvm->probe_queue)) { 196949f71713SSara Sharon iwl_mvm_disable_txq(mvm, mvm->probe_queue, 1970df88c08dSLiad Kaufman vif->hw_queue[0], IWL_MAX_TID_COUNT, 1971df88c08dSLiad Kaufman 0); 197249f71713SSara Sharon mvmvif->bcast_sta.tfd_queue_msk &= ~BIT(mvm->probe_queue); 1973df88c08dSLiad Kaufman } 1974df88c08dSLiad Kaufman 197549f71713SSara Sharon if (mvmvif->bcast_sta.tfd_queue_msk & BIT(mvm->p2p_dev_queue)) { 197649f71713SSara Sharon iwl_mvm_disable_txq(mvm, mvm->p2p_dev_queue, 1977df88c08dSLiad Kaufman vif->hw_queue[0], IWL_MAX_TID_COUNT, 1978df88c08dSLiad Kaufman 0); 197949f71713SSara Sharon mvmvif->bcast_sta.tfd_queue_msk &= ~BIT(mvm->p2p_dev_queue); 1980df88c08dSLiad Kaufman } 1981e705c121SKalle Valo } 1982e705c121SKalle Valo 1983e705c121SKalle Valo /* Send the FW a request to remove the station from it's internal data 1984e705c121SKalle Valo * structures, but DO NOT remove the entry from the local data structures. */ 1985e705c121SKalle Valo int iwl_mvm_send_rm_bcast_sta(struct iwl_mvm *mvm, struct ieee80211_vif *vif) 1986e705c121SKalle Valo { 1987e705c121SKalle Valo struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 1988e705c121SKalle Valo int ret; 1989e705c121SKalle Valo 1990e705c121SKalle Valo lockdep_assert_held(&mvm->mutex); 1991e705c121SKalle Valo 1992df88c08dSLiad Kaufman if (iwl_mvm_is_dqa_supported(mvm)) 1993df88c08dSLiad Kaufman iwl_mvm_free_bcast_sta_queues(mvm, vif); 1994df88c08dSLiad Kaufman 1995e705c121SKalle Valo ret = iwl_mvm_rm_sta_common(mvm, mvmvif->bcast_sta.sta_id); 1996e705c121SKalle Valo if (ret) 1997e705c121SKalle Valo IWL_WARN(mvm, "Failed sending remove station\n"); 1998e705c121SKalle Valo return ret; 1999e705c121SKalle Valo } 2000e705c121SKalle Valo 2001e705c121SKalle Valo int iwl_mvm_alloc_bcast_sta(struct iwl_mvm *mvm, struct ieee80211_vif *vif) 2002e705c121SKalle Valo { 2003e705c121SKalle Valo struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 2004de24f638SLiad Kaufman u32 qmask = 0; 2005e705c121SKalle Valo 2006e705c121SKalle Valo lockdep_assert_held(&mvm->mutex); 2007e705c121SKalle Valo 2008df88c08dSLiad Kaufman if (!iwl_mvm_is_dqa_supported(mvm)) { 2009e705c121SKalle Valo qmask = iwl_mvm_mac_get_queues_mask(vif); 2010e705c121SKalle Valo 2011e705c121SKalle Valo /* 2012e705c121SKalle Valo * The firmware defines the TFD queue mask to only be relevant 2013e705c121SKalle Valo * for *unicast* queues, so the multicast (CAB) queue shouldn't 2014df88c08dSLiad Kaufman * be included. This only happens in NL80211_IFTYPE_AP vif type, 2015df88c08dSLiad Kaufman * so the next line will only have an effect there. 2016e705c121SKalle Valo */ 2017e705c121SKalle Valo qmask &= ~BIT(vif->cab_queue); 2018de24f638SLiad Kaufman } 2019de24f638SLiad Kaufman 2020e705c121SKalle Valo return iwl_mvm_allocate_int_sta(mvm, &mvmvif->bcast_sta, qmask, 2021e705c121SKalle Valo ieee80211_vif_type_p2p(vif)); 2022e705c121SKalle Valo } 2023e705c121SKalle Valo 2024e705c121SKalle Valo /* Allocate a new station entry for the broadcast station to the given vif, 2025e705c121SKalle Valo * and send it to the FW. 2026e705c121SKalle Valo * Note that each P2P mac should have its own broadcast station. 2027e705c121SKalle Valo * 2028e705c121SKalle Valo * @mvm: the mvm component 2029e705c121SKalle Valo * @vif: the interface to which the broadcast station is added 2030e705c121SKalle Valo * @bsta: the broadcast station to add. */ 2031e705c121SKalle Valo int iwl_mvm_add_bcast_sta(struct iwl_mvm *mvm, struct ieee80211_vif *vif) 2032e705c121SKalle Valo { 2033e705c121SKalle Valo struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 2034e705c121SKalle Valo struct iwl_mvm_int_sta *bsta = &mvmvif->bcast_sta; 2035e705c121SKalle Valo int ret; 2036e705c121SKalle Valo 2037e705c121SKalle Valo lockdep_assert_held(&mvm->mutex); 2038e705c121SKalle Valo 2039e705c121SKalle Valo ret = iwl_mvm_alloc_bcast_sta(mvm, vif); 2040e705c121SKalle Valo if (ret) 2041e705c121SKalle Valo return ret; 2042e705c121SKalle Valo 2043e705c121SKalle Valo ret = iwl_mvm_send_add_bcast_sta(mvm, vif); 2044e705c121SKalle Valo 2045e705c121SKalle Valo if (ret) 2046e705c121SKalle Valo iwl_mvm_dealloc_int_sta(mvm, bsta); 2047e705c121SKalle Valo 2048e705c121SKalle Valo return ret; 2049e705c121SKalle Valo } 2050e705c121SKalle Valo 2051e705c121SKalle Valo void iwl_mvm_dealloc_bcast_sta(struct iwl_mvm *mvm, struct ieee80211_vif *vif) 2052e705c121SKalle Valo { 2053e705c121SKalle Valo struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 2054e705c121SKalle Valo 2055e705c121SKalle Valo iwl_mvm_dealloc_int_sta(mvm, &mvmvif->bcast_sta); 2056e705c121SKalle Valo } 2057e705c121SKalle Valo 2058e705c121SKalle Valo /* 2059e705c121SKalle Valo * Send the FW a request to remove the station from it's internal data 2060e705c121SKalle Valo * structures, and in addition remove it from the local data structure. 2061e705c121SKalle Valo */ 2062e705c121SKalle Valo int iwl_mvm_rm_bcast_sta(struct iwl_mvm *mvm, struct ieee80211_vif *vif) 2063e705c121SKalle Valo { 2064e705c121SKalle Valo int ret; 2065e705c121SKalle Valo 2066e705c121SKalle Valo lockdep_assert_held(&mvm->mutex); 2067e705c121SKalle Valo 2068e705c121SKalle Valo ret = iwl_mvm_send_rm_bcast_sta(mvm, vif); 2069e705c121SKalle Valo 2070e705c121SKalle Valo iwl_mvm_dealloc_bcast_sta(mvm, vif); 2071e705c121SKalle Valo 2072e705c121SKalle Valo return ret; 2073e705c121SKalle Valo } 2074e705c121SKalle Valo 207526d6c16bSSara Sharon /* 207626d6c16bSSara Sharon * Allocate a new station entry for the multicast station to the given vif, 207726d6c16bSSara Sharon * and send it to the FW. 207826d6c16bSSara Sharon * Note that each AP/GO mac should have its own multicast station. 207926d6c16bSSara Sharon * 208026d6c16bSSara Sharon * @mvm: the mvm component 208126d6c16bSSara Sharon * @vif: the interface to which the multicast station is added 208226d6c16bSSara Sharon */ 208326d6c16bSSara Sharon int iwl_mvm_add_mcast_sta(struct iwl_mvm *mvm, struct ieee80211_vif *vif) 208426d6c16bSSara Sharon { 208526d6c16bSSara Sharon struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 208626d6c16bSSara Sharon struct iwl_mvm_int_sta *msta = &mvmvif->mcast_sta; 208726d6c16bSSara Sharon static const u8 _maddr[] = {0x03, 0x00, 0x00, 0x00, 0x00, 0x00}; 208826d6c16bSSara Sharon const u8 *maddr = _maddr; 208926d6c16bSSara Sharon struct iwl_trans_txq_scd_cfg cfg = { 209026d6c16bSSara Sharon .fifo = IWL_MVM_TX_FIFO_MCAST, 209126d6c16bSSara Sharon .sta_id = msta->sta_id, 209226d6c16bSSara Sharon .tid = IWL_MAX_TID_COUNT, 209326d6c16bSSara Sharon .aggregate = false, 209426d6c16bSSara Sharon .frame_limit = IWL_FRAME_LIMIT, 209526d6c16bSSara Sharon }; 209626d6c16bSSara Sharon unsigned int timeout = iwl_mvm_get_wd_timeout(mvm, vif, false, false); 209726d6c16bSSara Sharon int ret; 209826d6c16bSSara Sharon 209926d6c16bSSara Sharon lockdep_assert_held(&mvm->mutex); 210026d6c16bSSara Sharon 210126d6c16bSSara Sharon if (!iwl_mvm_is_dqa_supported(mvm)) 210226d6c16bSSara Sharon return 0; 210326d6c16bSSara Sharon 210426d6c16bSSara Sharon if (WARN_ON(vif->type != NL80211_IFTYPE_AP)) 210526d6c16bSSara Sharon return -ENOTSUPP; 210626d6c16bSSara Sharon 210726d6c16bSSara Sharon ret = iwl_mvm_add_int_sta_common(mvm, msta, maddr, 210826d6c16bSSara Sharon mvmvif->id, mvmvif->color); 210926d6c16bSSara Sharon if (ret) { 211026d6c16bSSara Sharon iwl_mvm_dealloc_int_sta(mvm, msta); 211126d6c16bSSara Sharon return ret; 211226d6c16bSSara Sharon } 211326d6c16bSSara Sharon 211426d6c16bSSara Sharon /* 211526d6c16bSSara Sharon * Enable cab queue after the ADD_STA command is sent. 211626d6c16bSSara Sharon * This is needed for a000 firmware which won't accept SCD_QUEUE_CFG 211726d6c16bSSara Sharon * command with unknown station id. 211826d6c16bSSara Sharon */ 2119310181ecSSara Sharon if (iwl_mvm_has_new_tx_api(mvm)) { 2120310181ecSSara Sharon int queue = iwl_mvm_tvqm_enable_txq(mvm, vif->cab_queue, 2121310181ecSSara Sharon msta->sta_id, 2122310181ecSSara Sharon IWL_MAX_TID_COUNT, 212326d6c16bSSara Sharon timeout); 2124310181ecSSara Sharon vif->cab_queue = queue; 2125310181ecSSara Sharon } else { 2126310181ecSSara Sharon iwl_mvm_enable_txq(mvm, vif->cab_queue, vif->cab_queue, 0, 2127310181ecSSara Sharon &cfg, timeout); 2128310181ecSSara Sharon } 212926d6c16bSSara Sharon 213026d6c16bSSara Sharon return 0; 213126d6c16bSSara Sharon } 213226d6c16bSSara Sharon 213326d6c16bSSara Sharon /* 213426d6c16bSSara Sharon * Send the FW a request to remove the station from it's internal data 213526d6c16bSSara Sharon * structures, and in addition remove it from the local data structure. 213626d6c16bSSara Sharon */ 213726d6c16bSSara Sharon int iwl_mvm_rm_mcast_sta(struct iwl_mvm *mvm, struct ieee80211_vif *vif) 213826d6c16bSSara Sharon { 213926d6c16bSSara Sharon struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 214026d6c16bSSara Sharon int ret; 214126d6c16bSSara Sharon 214226d6c16bSSara Sharon lockdep_assert_held(&mvm->mutex); 214326d6c16bSSara Sharon 214426d6c16bSSara Sharon if (!iwl_mvm_is_dqa_supported(mvm)) 214526d6c16bSSara Sharon return 0; 214626d6c16bSSara Sharon 214726d6c16bSSara Sharon iwl_mvm_disable_txq(mvm, vif->cab_queue, vif->cab_queue, 214826d6c16bSSara Sharon IWL_MAX_TID_COUNT, 0); 214926d6c16bSSara Sharon 215026d6c16bSSara Sharon ret = iwl_mvm_rm_sta_common(mvm, mvmvif->mcast_sta.sta_id); 215126d6c16bSSara Sharon if (ret) 215226d6c16bSSara Sharon IWL_WARN(mvm, "Failed sending remove station\n"); 215326d6c16bSSara Sharon 215426d6c16bSSara Sharon return ret; 215526d6c16bSSara Sharon } 215626d6c16bSSara Sharon 2157e705c121SKalle Valo #define IWL_MAX_RX_BA_SESSIONS 16 2158e705c121SKalle Valo 2159b915c101SSara Sharon static void iwl_mvm_sync_rxq_del_ba(struct iwl_mvm *mvm, u8 baid) 216010b2b201SSara Sharon { 2161b915c101SSara Sharon struct iwl_mvm_delba_notif notif = { 2162b915c101SSara Sharon .metadata.type = IWL_MVM_RXQ_NOTIF_DEL_BA, 2163b915c101SSara Sharon .metadata.sync = 1, 2164b915c101SSara Sharon .delba.baid = baid, 2165b915c101SSara Sharon }; 2166b915c101SSara Sharon iwl_mvm_sync_rx_queues_internal(mvm, (void *)¬if, sizeof(notif)); 216710b2b201SSara Sharon }; 216810b2b201SSara Sharon 2169b915c101SSara Sharon static void iwl_mvm_free_reorder(struct iwl_mvm *mvm, 2170b915c101SSara Sharon struct iwl_mvm_baid_data *data) 2171b915c101SSara Sharon { 2172b915c101SSara Sharon int i; 2173b915c101SSara Sharon 2174b915c101SSara Sharon iwl_mvm_sync_rxq_del_ba(mvm, data->baid); 2175b915c101SSara Sharon 2176b915c101SSara Sharon for (i = 0; i < mvm->trans->num_rx_queues; i++) { 2177b915c101SSara Sharon int j; 2178b915c101SSara Sharon struct iwl_mvm_reorder_buffer *reorder_buf = 2179b915c101SSara Sharon &data->reorder_buf[i]; 2180b915c101SSara Sharon 21810690405fSSara Sharon spin_lock_bh(&reorder_buf->lock); 21820690405fSSara Sharon if (likely(!reorder_buf->num_stored)) { 21830690405fSSara Sharon spin_unlock_bh(&reorder_buf->lock); 2184b915c101SSara Sharon continue; 21850690405fSSara Sharon } 2186b915c101SSara Sharon 2187b915c101SSara Sharon /* 2188b915c101SSara Sharon * This shouldn't happen in regular DELBA since the internal 2189b915c101SSara Sharon * delBA notification should trigger a release of all frames in 2190b915c101SSara Sharon * the reorder buffer. 2191b915c101SSara Sharon */ 2192b915c101SSara Sharon WARN_ON(1); 2193b915c101SSara Sharon 2194b915c101SSara Sharon for (j = 0; j < reorder_buf->buf_size; j++) 2195b915c101SSara Sharon __skb_queue_purge(&reorder_buf->entries[j]); 21960690405fSSara Sharon /* 21970690405fSSara Sharon * Prevent timer re-arm. This prevents a very far fetched case 21980690405fSSara Sharon * where we timed out on the notification. There may be prior 21990690405fSSara Sharon * RX frames pending in the RX queue before the notification 22000690405fSSara Sharon * that might get processed between now and the actual deletion 22010690405fSSara Sharon * and we would re-arm the timer although we are deleting the 22020690405fSSara Sharon * reorder buffer. 22030690405fSSara Sharon */ 22040690405fSSara Sharon reorder_buf->removed = true; 22050690405fSSara Sharon spin_unlock_bh(&reorder_buf->lock); 22060690405fSSara Sharon del_timer_sync(&reorder_buf->reorder_timer); 2207b915c101SSara Sharon } 2208b915c101SSara Sharon } 2209b915c101SSara Sharon 2210b915c101SSara Sharon static void iwl_mvm_init_reorder_buffer(struct iwl_mvm *mvm, 2211b915c101SSara Sharon u32 sta_id, 2212b915c101SSara Sharon struct iwl_mvm_baid_data *data, 2213b915c101SSara Sharon u16 ssn, u8 buf_size) 2214b915c101SSara Sharon { 2215b915c101SSara Sharon int i; 2216b915c101SSara Sharon 2217b915c101SSara Sharon for (i = 0; i < mvm->trans->num_rx_queues; i++) { 2218b915c101SSara Sharon struct iwl_mvm_reorder_buffer *reorder_buf = 2219b915c101SSara Sharon &data->reorder_buf[i]; 2220b915c101SSara Sharon int j; 2221b915c101SSara Sharon 2222b915c101SSara Sharon reorder_buf->num_stored = 0; 2223b915c101SSara Sharon reorder_buf->head_sn = ssn; 2224b915c101SSara Sharon reorder_buf->buf_size = buf_size; 22250690405fSSara Sharon /* rx reorder timer */ 22260690405fSSara Sharon reorder_buf->reorder_timer.function = 22270690405fSSara Sharon iwl_mvm_reorder_timer_expired; 22280690405fSSara Sharon reorder_buf->reorder_timer.data = (unsigned long)reorder_buf; 22290690405fSSara Sharon init_timer(&reorder_buf->reorder_timer); 22300690405fSSara Sharon spin_lock_init(&reorder_buf->lock); 22310690405fSSara Sharon reorder_buf->mvm = mvm; 2232b915c101SSara Sharon reorder_buf->queue = i; 2233b915c101SSara Sharon reorder_buf->sta_id = sta_id; 2234b915c101SSara Sharon for (j = 0; j < reorder_buf->buf_size; j++) 2235b915c101SSara Sharon __skb_queue_head_init(&reorder_buf->entries[j]); 2236b915c101SSara Sharon } 223710b2b201SSara Sharon } 223810b2b201SSara Sharon 2239e705c121SKalle Valo int iwl_mvm_sta_rx_agg(struct iwl_mvm *mvm, struct ieee80211_sta *sta, 224010b2b201SSara Sharon int tid, u16 ssn, bool start, u8 buf_size, u16 timeout) 2241e705c121SKalle Valo { 2242e705c121SKalle Valo struct iwl_mvm_sta *mvm_sta = iwl_mvm_sta_from_mac80211(sta); 2243e705c121SKalle Valo struct iwl_mvm_add_sta_cmd cmd = {}; 224410b2b201SSara Sharon struct iwl_mvm_baid_data *baid_data = NULL; 2245e705c121SKalle Valo int ret; 2246e705c121SKalle Valo u32 status; 2247e705c121SKalle Valo 2248e705c121SKalle Valo lockdep_assert_held(&mvm->mutex); 2249e705c121SKalle Valo 2250e705c121SKalle Valo if (start && mvm->rx_ba_sessions >= IWL_MAX_RX_BA_SESSIONS) { 2251e705c121SKalle Valo IWL_WARN(mvm, "Not enough RX BA SESSIONS\n"); 2252e705c121SKalle Valo return -ENOSPC; 2253e705c121SKalle Valo } 2254e705c121SKalle Valo 225510b2b201SSara Sharon if (iwl_mvm_has_new_rx_api(mvm) && start) { 225610b2b201SSara Sharon /* 225710b2b201SSara Sharon * Allocate here so if allocation fails we can bail out early 225810b2b201SSara Sharon * before starting the BA session in the firmware 225910b2b201SSara Sharon */ 2260b915c101SSara Sharon baid_data = kzalloc(sizeof(*baid_data) + 2261b915c101SSara Sharon mvm->trans->num_rx_queues * 2262b915c101SSara Sharon sizeof(baid_data->reorder_buf[0]), 2263b915c101SSara Sharon GFP_KERNEL); 226410b2b201SSara Sharon if (!baid_data) 226510b2b201SSara Sharon return -ENOMEM; 226610b2b201SSara Sharon } 226710b2b201SSara Sharon 2268e705c121SKalle Valo cmd.mac_id_n_color = cpu_to_le32(mvm_sta->mac_id_n_color); 2269e705c121SKalle Valo cmd.sta_id = mvm_sta->sta_id; 2270e705c121SKalle Valo cmd.add_modify = STA_MODE_MODIFY; 2271e705c121SKalle Valo if (start) { 2272e705c121SKalle Valo cmd.add_immediate_ba_tid = (u8) tid; 2273e705c121SKalle Valo cmd.add_immediate_ba_ssn = cpu_to_le16(ssn); 2274854c5705SSara Sharon cmd.rx_ba_window = cpu_to_le16((u16)buf_size); 2275e705c121SKalle Valo } else { 2276e705c121SKalle Valo cmd.remove_immediate_ba_tid = (u8) tid; 2277e705c121SKalle Valo } 2278e705c121SKalle Valo cmd.modify_mask = start ? STA_MODIFY_ADD_BA_TID : 2279e705c121SKalle Valo STA_MODIFY_REMOVE_BA_TID; 2280e705c121SKalle Valo 2281e705c121SKalle Valo status = ADD_STA_SUCCESS; 2282854c5705SSara Sharon ret = iwl_mvm_send_cmd_pdu_status(mvm, ADD_STA, 2283854c5705SSara Sharon iwl_mvm_add_sta_cmd_size(mvm), 2284e705c121SKalle Valo &cmd, &status); 2285e705c121SKalle Valo if (ret) 228610b2b201SSara Sharon goto out_free; 2287e705c121SKalle Valo 2288837c4da9SSara Sharon switch (status & IWL_ADD_STA_STATUS_MASK) { 2289e705c121SKalle Valo case ADD_STA_SUCCESS: 229035263a03SSara Sharon IWL_DEBUG_HT(mvm, "RX BA Session %sed in fw\n", 2291e705c121SKalle Valo start ? "start" : "stopp"); 2292e705c121SKalle Valo break; 2293e705c121SKalle Valo case ADD_STA_IMMEDIATE_BA_FAILURE: 2294e705c121SKalle Valo IWL_WARN(mvm, "RX BA Session refused by fw\n"); 2295e705c121SKalle Valo ret = -ENOSPC; 2296e705c121SKalle Valo break; 2297e705c121SKalle Valo default: 2298e705c121SKalle Valo ret = -EIO; 2299e705c121SKalle Valo IWL_ERR(mvm, "RX BA Session failed %sing, status 0x%x\n", 2300e705c121SKalle Valo start ? "start" : "stopp", status); 2301e705c121SKalle Valo break; 2302e705c121SKalle Valo } 2303e705c121SKalle Valo 230410b2b201SSara Sharon if (ret) 230510b2b201SSara Sharon goto out_free; 230610b2b201SSara Sharon 230710b2b201SSara Sharon if (start) { 230810b2b201SSara Sharon u8 baid; 230910b2b201SSara Sharon 2310e705c121SKalle Valo mvm->rx_ba_sessions++; 231110b2b201SSara Sharon 231210b2b201SSara Sharon if (!iwl_mvm_has_new_rx_api(mvm)) 231310b2b201SSara Sharon return 0; 231410b2b201SSara Sharon 231510b2b201SSara Sharon if (WARN_ON(!(status & IWL_ADD_STA_BAID_VALID_MASK))) { 231610b2b201SSara Sharon ret = -EINVAL; 231710b2b201SSara Sharon goto out_free; 231810b2b201SSara Sharon } 231910b2b201SSara Sharon baid = (u8)((status & IWL_ADD_STA_BAID_MASK) >> 232010b2b201SSara Sharon IWL_ADD_STA_BAID_SHIFT); 232110b2b201SSara Sharon baid_data->baid = baid; 232210b2b201SSara Sharon baid_data->timeout = timeout; 232310b2b201SSara Sharon baid_data->last_rx = jiffies; 232472c240feSWei Yongjun setup_timer(&baid_data->session_timer, 232572c240feSWei Yongjun iwl_mvm_rx_agg_session_expired, 232672c240feSWei Yongjun (unsigned long)&mvm->baid_map[baid]); 232710b2b201SSara Sharon baid_data->mvm = mvm; 232810b2b201SSara Sharon baid_data->tid = tid; 232910b2b201SSara Sharon baid_data->sta_id = mvm_sta->sta_id; 233010b2b201SSara Sharon 233110b2b201SSara Sharon mvm_sta->tid_to_baid[tid] = baid; 233210b2b201SSara Sharon if (timeout) 233310b2b201SSara Sharon mod_timer(&baid_data->session_timer, 233410b2b201SSara Sharon TU_TO_EXP_TIME(timeout * 2)); 233510b2b201SSara Sharon 2336b915c101SSara Sharon iwl_mvm_init_reorder_buffer(mvm, mvm_sta->sta_id, 2337b915c101SSara Sharon baid_data, ssn, buf_size); 233810b2b201SSara Sharon /* 233910b2b201SSara Sharon * protect the BA data with RCU to cover a case where our 234010b2b201SSara Sharon * internal RX sync mechanism will timeout (not that it's 234110b2b201SSara Sharon * supposed to happen) and we will free the session data while 234210b2b201SSara Sharon * RX is being processed in parallel 234310b2b201SSara Sharon */ 234435263a03SSara Sharon IWL_DEBUG_HT(mvm, "Sta %d(%d) is assigned to BAID %d\n", 234535263a03SSara Sharon mvm_sta->sta_id, tid, baid); 234610b2b201SSara Sharon WARN_ON(rcu_access_pointer(mvm->baid_map[baid])); 234710b2b201SSara Sharon rcu_assign_pointer(mvm->baid_map[baid], baid_data); 234860dec523SSara Sharon } else { 234910b2b201SSara Sharon u8 baid = mvm_sta->tid_to_baid[tid]; 235010b2b201SSara Sharon 235160dec523SSara Sharon if (mvm->rx_ba_sessions > 0) 2352e705c121SKalle Valo /* check that restart flow didn't zero the counter */ 2353e705c121SKalle Valo mvm->rx_ba_sessions--; 235410b2b201SSara Sharon if (!iwl_mvm_has_new_rx_api(mvm)) 235510b2b201SSara Sharon return 0; 2356e705c121SKalle Valo 235710b2b201SSara Sharon if (WARN_ON(baid == IWL_RX_REORDER_DATA_INVALID_BAID)) 235810b2b201SSara Sharon return -EINVAL; 235910b2b201SSara Sharon 236010b2b201SSara Sharon baid_data = rcu_access_pointer(mvm->baid_map[baid]); 236110b2b201SSara Sharon if (WARN_ON(!baid_data)) 236210b2b201SSara Sharon return -EINVAL; 236310b2b201SSara Sharon 236410b2b201SSara Sharon /* synchronize all rx queues so we can safely delete */ 2365b915c101SSara Sharon iwl_mvm_free_reorder(mvm, baid_data); 236610b2b201SSara Sharon del_timer_sync(&baid_data->session_timer); 236710b2b201SSara Sharon RCU_INIT_POINTER(mvm->baid_map[baid], NULL); 236810b2b201SSara Sharon kfree_rcu(baid_data, rcu_head); 236935263a03SSara Sharon IWL_DEBUG_HT(mvm, "BAID %d is free\n", baid); 237010b2b201SSara Sharon } 237110b2b201SSara Sharon return 0; 237210b2b201SSara Sharon 237310b2b201SSara Sharon out_free: 237410b2b201SSara Sharon kfree(baid_data); 2375e705c121SKalle Valo return ret; 2376e705c121SKalle Valo } 2377e705c121SKalle Valo 23789794c64fSLiad Kaufman int iwl_mvm_sta_tx_agg(struct iwl_mvm *mvm, struct ieee80211_sta *sta, 2379e705c121SKalle Valo int tid, u8 queue, bool start) 2380e705c121SKalle Valo { 2381e705c121SKalle Valo struct iwl_mvm_sta *mvm_sta = iwl_mvm_sta_from_mac80211(sta); 2382e705c121SKalle Valo struct iwl_mvm_add_sta_cmd cmd = {}; 2383e705c121SKalle Valo int ret; 2384e705c121SKalle Valo u32 status; 2385e705c121SKalle Valo 2386e705c121SKalle Valo lockdep_assert_held(&mvm->mutex); 2387e705c121SKalle Valo 2388e705c121SKalle Valo if (start) { 2389e705c121SKalle Valo mvm_sta->tfd_queue_msk |= BIT(queue); 2390e705c121SKalle Valo mvm_sta->tid_disable_agg &= ~BIT(tid); 2391e705c121SKalle Valo } else { 2392cf961e16SLiad Kaufman /* In DQA-mode the queue isn't removed on agg termination */ 2393cf961e16SLiad Kaufman if (!iwl_mvm_is_dqa_supported(mvm)) 2394e705c121SKalle Valo mvm_sta->tfd_queue_msk &= ~BIT(queue); 2395e705c121SKalle Valo mvm_sta->tid_disable_agg |= BIT(tid); 2396e705c121SKalle Valo } 2397e705c121SKalle Valo 2398e705c121SKalle Valo cmd.mac_id_n_color = cpu_to_le32(mvm_sta->mac_id_n_color); 2399e705c121SKalle Valo cmd.sta_id = mvm_sta->sta_id; 2400e705c121SKalle Valo cmd.add_modify = STA_MODE_MODIFY; 2401bb49701bSSara Sharon if (!iwl_mvm_has_new_tx_api(mvm)) 2402bb49701bSSara Sharon cmd.modify_mask = STA_MODIFY_QUEUES; 2403bb49701bSSara Sharon cmd.modify_mask |= STA_MODIFY_TID_DISABLE_TX; 2404e705c121SKalle Valo cmd.tfd_queue_msk = cpu_to_le32(mvm_sta->tfd_queue_msk); 2405e705c121SKalle Valo cmd.tid_disable_tx = cpu_to_le16(mvm_sta->tid_disable_agg); 2406e705c121SKalle Valo 2407e705c121SKalle Valo status = ADD_STA_SUCCESS; 2408854c5705SSara Sharon ret = iwl_mvm_send_cmd_pdu_status(mvm, ADD_STA, 2409854c5705SSara Sharon iwl_mvm_add_sta_cmd_size(mvm), 2410e705c121SKalle Valo &cmd, &status); 2411e705c121SKalle Valo if (ret) 2412e705c121SKalle Valo return ret; 2413e705c121SKalle Valo 2414837c4da9SSara Sharon switch (status & IWL_ADD_STA_STATUS_MASK) { 2415e705c121SKalle Valo case ADD_STA_SUCCESS: 2416e705c121SKalle Valo break; 2417e705c121SKalle Valo default: 2418e705c121SKalle Valo ret = -EIO; 2419e705c121SKalle Valo IWL_ERR(mvm, "TX BA Session failed %sing, status 0x%x\n", 2420e705c121SKalle Valo start ? "start" : "stopp", status); 2421e705c121SKalle Valo break; 2422e705c121SKalle Valo } 2423e705c121SKalle Valo 2424e705c121SKalle Valo return ret; 2425e705c121SKalle Valo } 2426e705c121SKalle Valo 2427e705c121SKalle Valo const u8 tid_to_mac80211_ac[] = { 2428e705c121SKalle Valo IEEE80211_AC_BE, 2429e705c121SKalle Valo IEEE80211_AC_BK, 2430e705c121SKalle Valo IEEE80211_AC_BK, 2431e705c121SKalle Valo IEEE80211_AC_BE, 2432e705c121SKalle Valo IEEE80211_AC_VI, 2433e705c121SKalle Valo IEEE80211_AC_VI, 2434e705c121SKalle Valo IEEE80211_AC_VO, 2435e705c121SKalle Valo IEEE80211_AC_VO, 24369794c64fSLiad Kaufman IEEE80211_AC_VO, /* We treat MGMT as TID 8, which is set as AC_VO */ 2437e705c121SKalle Valo }; 2438e705c121SKalle Valo 2439e705c121SKalle Valo static const u8 tid_to_ucode_ac[] = { 2440e705c121SKalle Valo AC_BE, 2441e705c121SKalle Valo AC_BK, 2442e705c121SKalle Valo AC_BK, 2443e705c121SKalle Valo AC_BE, 2444e705c121SKalle Valo AC_VI, 2445e705c121SKalle Valo AC_VI, 2446e705c121SKalle Valo AC_VO, 2447e705c121SKalle Valo AC_VO, 2448e705c121SKalle Valo }; 2449e705c121SKalle Valo 2450e705c121SKalle Valo int iwl_mvm_sta_tx_agg_start(struct iwl_mvm *mvm, struct ieee80211_vif *vif, 2451e705c121SKalle Valo struct ieee80211_sta *sta, u16 tid, u16 *ssn) 2452e705c121SKalle Valo { 2453e705c121SKalle Valo struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta); 2454e705c121SKalle Valo struct iwl_mvm_tid_data *tid_data; 2455e705c121SKalle Valo int txq_id; 2456e705c121SKalle Valo int ret; 2457e705c121SKalle Valo 2458e705c121SKalle Valo if (WARN_ON_ONCE(tid >= IWL_MAX_TID_COUNT)) 2459e705c121SKalle Valo return -EINVAL; 2460e705c121SKalle Valo 2461e705c121SKalle Valo if (mvmsta->tid_data[tid].state != IWL_AGG_OFF) { 2462e705c121SKalle Valo IWL_ERR(mvm, "Start AGG when state is not IWL_AGG_OFF %d!\n", 2463e705c121SKalle Valo mvmsta->tid_data[tid].state); 2464e705c121SKalle Valo return -ENXIO; 2465e705c121SKalle Valo } 2466e705c121SKalle Valo 2467e705c121SKalle Valo lockdep_assert_held(&mvm->mutex); 2468e705c121SKalle Valo 2469e705c121SKalle Valo spin_lock_bh(&mvmsta->lock); 2470e705c121SKalle Valo 2471e705c121SKalle Valo /* possible race condition - we entered D0i3 while starting agg */ 2472e705c121SKalle Valo if (test_bit(IWL_MVM_STATUS_IN_D0I3, &mvm->status)) { 2473e705c121SKalle Valo spin_unlock_bh(&mvmsta->lock); 2474e705c121SKalle Valo IWL_ERR(mvm, "Entered D0i3 while starting Tx agg\n"); 2475e705c121SKalle Valo return -EIO; 2476e705c121SKalle Valo } 2477e705c121SKalle Valo 24789f9af3d7SLiad Kaufman spin_lock(&mvm->queue_info_lock); 2479e705c121SKalle Valo 2480cf961e16SLiad Kaufman /* 2481cf961e16SLiad Kaufman * Note the possible cases: 2482cf961e16SLiad Kaufman * 1. In DQA mode with an enabled TXQ - TXQ needs to become agg'ed 2483cf961e16SLiad Kaufman * 2. Non-DQA mode: the TXQ hasn't yet been enabled, so find a free 2484cf961e16SLiad Kaufman * one and mark it as reserved 2485cf961e16SLiad Kaufman * 3. In DQA mode, but no traffic yet on this TID: same treatment as in 2486cf961e16SLiad Kaufman * non-DQA mode, since the TXQ hasn't yet been allocated 2487cf961e16SLiad Kaufman */ 2488cf961e16SLiad Kaufman txq_id = mvmsta->tid_data[tid].txq_id; 24899f9af3d7SLiad Kaufman if (iwl_mvm_is_dqa_supported(mvm) && 24909f9af3d7SLiad Kaufman unlikely(mvm->queue_info[txq_id].status == IWL_MVM_QUEUE_SHARED)) { 24919f9af3d7SLiad Kaufman ret = -ENXIO; 24929f9af3d7SLiad Kaufman IWL_DEBUG_TX_QUEUES(mvm, 24939f9af3d7SLiad Kaufman "Can't start tid %d agg on shared queue!\n", 24949f9af3d7SLiad Kaufman tid); 24959f9af3d7SLiad Kaufman goto release_locks; 24969f9af3d7SLiad Kaufman } else if (!iwl_mvm_is_dqa_supported(mvm) || 2497cf961e16SLiad Kaufman mvm->queue_info[txq_id].status != IWL_MVM_QUEUE_READY) { 24989794c64fSLiad Kaufman txq_id = iwl_mvm_find_free_queue(mvm, mvmsta->sta_id, 24999794c64fSLiad Kaufman mvm->first_agg_queue, 2500e705c121SKalle Valo mvm->last_agg_queue); 2501e705c121SKalle Valo if (txq_id < 0) { 2502e705c121SKalle Valo ret = txq_id; 2503e705c121SKalle Valo IWL_ERR(mvm, "Failed to allocate agg queue\n"); 2504e705c121SKalle Valo goto release_locks; 2505e705c121SKalle Valo } 250601796ff2SSara Sharon /* 250701796ff2SSara Sharon * TXQ shouldn't be in inactive mode for non-DQA, so getting 250801796ff2SSara Sharon * an inactive queue from iwl_mvm_find_free_queue() is 250901796ff2SSara Sharon * certainly a bug 251001796ff2SSara Sharon */ 251101796ff2SSara Sharon WARN_ON(mvm->queue_info[txq_id].status == 251201796ff2SSara Sharon IWL_MVM_QUEUE_INACTIVE); 2513cf961e16SLiad Kaufman 2514cf961e16SLiad Kaufman /* TXQ hasn't yet been enabled, so mark it only as reserved */ 2515cf961e16SLiad Kaufman mvm->queue_info[txq_id].status = IWL_MVM_QUEUE_RESERVED; 2516cf961e16SLiad Kaufman } 25179f9af3d7SLiad Kaufman 25189f9af3d7SLiad Kaufman spin_unlock(&mvm->queue_info_lock); 2519e705c121SKalle Valo 2520cf961e16SLiad Kaufman IWL_DEBUG_TX_QUEUES(mvm, 2521cf961e16SLiad Kaufman "AGG for tid %d will be on queue #%d\n", 2522cf961e16SLiad Kaufman tid, txq_id); 2523cf961e16SLiad Kaufman 2524e705c121SKalle Valo tid_data = &mvmsta->tid_data[tid]; 2525e705c121SKalle Valo tid_data->ssn = IEEE80211_SEQ_TO_SN(tid_data->seq_number); 2526e705c121SKalle Valo tid_data->txq_id = txq_id; 2527e705c121SKalle Valo *ssn = tid_data->ssn; 2528e705c121SKalle Valo 2529e705c121SKalle Valo IWL_DEBUG_TX_QUEUES(mvm, 2530e705c121SKalle Valo "Start AGG: sta %d tid %d queue %d - ssn = %d, next_recl = %d\n", 2531e705c121SKalle Valo mvmsta->sta_id, tid, txq_id, tid_data->ssn, 2532e705c121SKalle Valo tid_data->next_reclaimed); 2533e705c121SKalle Valo 2534e705c121SKalle Valo if (tid_data->ssn == tid_data->next_reclaimed) { 2535e705c121SKalle Valo tid_data->state = IWL_AGG_STARTING; 2536e705c121SKalle Valo ieee80211_start_tx_ba_cb_irqsafe(vif, sta->addr, tid); 2537e705c121SKalle Valo } else { 2538e705c121SKalle Valo tid_data->state = IWL_EMPTYING_HW_QUEUE_ADDBA; 2539e705c121SKalle Valo } 2540e705c121SKalle Valo 2541e705c121SKalle Valo ret = 0; 25429f9af3d7SLiad Kaufman goto out; 2543e705c121SKalle Valo 2544e705c121SKalle Valo release_locks: 25459f9af3d7SLiad Kaufman spin_unlock(&mvm->queue_info_lock); 25469f9af3d7SLiad Kaufman out: 2547e705c121SKalle Valo spin_unlock_bh(&mvmsta->lock); 2548e705c121SKalle Valo 2549e705c121SKalle Valo return ret; 2550e705c121SKalle Valo } 2551e705c121SKalle Valo 2552e705c121SKalle Valo int iwl_mvm_sta_tx_agg_oper(struct iwl_mvm *mvm, struct ieee80211_vif *vif, 2553bb81bb68SEmmanuel Grumbach struct ieee80211_sta *sta, u16 tid, u8 buf_size, 2554bb81bb68SEmmanuel Grumbach bool amsdu) 2555e705c121SKalle Valo { 2556e705c121SKalle Valo struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta); 2557e705c121SKalle Valo struct iwl_mvm_tid_data *tid_data = &mvmsta->tid_data[tid]; 2558e705c121SKalle Valo unsigned int wdg_timeout = 2559e705c121SKalle Valo iwl_mvm_get_wd_timeout(mvm, vif, sta->tdls, false); 2560eea76c36SEmmanuel Grumbach int queue, ret; 2561cf961e16SLiad Kaufman bool alloc_queue = true; 25629f9af3d7SLiad Kaufman enum iwl_mvm_queue_status queue_status; 2563e705c121SKalle Valo u16 ssn; 2564e705c121SKalle Valo 2565eea76c36SEmmanuel Grumbach struct iwl_trans_txq_scd_cfg cfg = { 2566eea76c36SEmmanuel Grumbach .sta_id = mvmsta->sta_id, 2567eea76c36SEmmanuel Grumbach .tid = tid, 2568eea76c36SEmmanuel Grumbach .frame_limit = buf_size, 2569eea76c36SEmmanuel Grumbach .aggregate = true, 2570eea76c36SEmmanuel Grumbach }; 2571eea76c36SEmmanuel Grumbach 2572e705c121SKalle Valo BUILD_BUG_ON((sizeof(mvmsta->agg_tids) * BITS_PER_BYTE) 2573e705c121SKalle Valo != IWL_MAX_TID_COUNT); 2574e705c121SKalle Valo 2575e705c121SKalle Valo buf_size = min_t(int, buf_size, LINK_QUAL_AGG_FRAME_LIMIT_DEF); 2576e705c121SKalle Valo 2577e705c121SKalle Valo spin_lock_bh(&mvmsta->lock); 2578e705c121SKalle Valo ssn = tid_data->ssn; 2579e705c121SKalle Valo queue = tid_data->txq_id; 2580e705c121SKalle Valo tid_data->state = IWL_AGG_ON; 2581e705c121SKalle Valo mvmsta->agg_tids |= BIT(tid); 2582e705c121SKalle Valo tid_data->ssn = 0xffff; 2583bb81bb68SEmmanuel Grumbach tid_data->amsdu_in_ampdu_allowed = amsdu; 2584e705c121SKalle Valo spin_unlock_bh(&mvmsta->lock); 2585e705c121SKalle Valo 2586eea76c36SEmmanuel Grumbach cfg.fifo = iwl_mvm_ac_to_tx_fifo[tid_to_mac80211_ac[tid]]; 2587e705c121SKalle Valo 25889f9af3d7SLiad Kaufman spin_lock_bh(&mvm->queue_info_lock); 25899f9af3d7SLiad Kaufman queue_status = mvm->queue_info[queue].status; 25909f9af3d7SLiad Kaufman spin_unlock_bh(&mvm->queue_info_lock); 25919f9af3d7SLiad Kaufman 2592cf961e16SLiad Kaufman /* In DQA mode, the existing queue might need to be reconfigured */ 2593cf961e16SLiad Kaufman if (iwl_mvm_is_dqa_supported(mvm)) { 2594cf961e16SLiad Kaufman /* Maybe there is no need to even alloc a queue... */ 2595cf961e16SLiad Kaufman if (mvm->queue_info[queue].status == IWL_MVM_QUEUE_READY) 2596cf961e16SLiad Kaufman alloc_queue = false; 2597cf961e16SLiad Kaufman 2598cf961e16SLiad Kaufman /* 2599cf961e16SLiad Kaufman * Only reconfig the SCD for the queue if the window size has 2600cf961e16SLiad Kaufman * changed from current (become smaller) 2601cf961e16SLiad Kaufman */ 2602cf961e16SLiad Kaufman if (!alloc_queue && buf_size < mvmsta->max_agg_bufsize) { 2603cf961e16SLiad Kaufman /* 2604bb49701bSSara Sharon * On new TX API rs and BA manager are offloaded. 2605bb49701bSSara Sharon * For now though, just don't support being reconfigured 2606bb49701bSSara Sharon */ 2607bb49701bSSara Sharon if (iwl_mvm_has_new_tx_api(mvm)) 2608bb49701bSSara Sharon return -ENOTSUPP; 2609bb49701bSSara Sharon 2610bb49701bSSara Sharon /* 2611cf961e16SLiad Kaufman * If reconfiguring an existing queue, it first must be 2612cf961e16SLiad Kaufman * drained 2613cf961e16SLiad Kaufman */ 2614cf961e16SLiad Kaufman ret = iwl_trans_wait_tx_queue_empty(mvm->trans, 2615cf961e16SLiad Kaufman BIT(queue)); 2616cf961e16SLiad Kaufman if (ret) { 2617cf961e16SLiad Kaufman IWL_ERR(mvm, 2618cf961e16SLiad Kaufman "Error draining queue before reconfig\n"); 2619cf961e16SLiad Kaufman return ret; 2620cf961e16SLiad Kaufman } 2621cf961e16SLiad Kaufman 2622cf961e16SLiad Kaufman ret = iwl_mvm_reconfig_scd(mvm, queue, cfg.fifo, 2623cf961e16SLiad Kaufman mvmsta->sta_id, tid, 2624cf961e16SLiad Kaufman buf_size, ssn); 2625cf961e16SLiad Kaufman if (ret) { 2626cf961e16SLiad Kaufman IWL_ERR(mvm, 2627cf961e16SLiad Kaufman "Error reconfiguring TXQ #%d\n", queue); 2628cf961e16SLiad Kaufman return ret; 2629cf961e16SLiad Kaufman } 2630cf961e16SLiad Kaufman } 2631cf961e16SLiad Kaufman } 2632cf961e16SLiad Kaufman 2633cf961e16SLiad Kaufman if (alloc_queue) 2634cf961e16SLiad Kaufman iwl_mvm_enable_txq(mvm, queue, 2635cf961e16SLiad Kaufman vif->hw_queue[tid_to_mac80211_ac[tid]], ssn, 2636cf961e16SLiad Kaufman &cfg, wdg_timeout); 2637e705c121SKalle Valo 26389f9af3d7SLiad Kaufman /* Send ADD_STA command to enable aggs only if the queue isn't shared */ 26399f9af3d7SLiad Kaufman if (queue_status != IWL_MVM_QUEUE_SHARED) { 2640e705c121SKalle Valo ret = iwl_mvm_sta_tx_agg(mvm, sta, tid, queue, true); 2641e705c121SKalle Valo if (ret) 2642e705c121SKalle Valo return -EIO; 26439f9af3d7SLiad Kaufman } 2644e705c121SKalle Valo 2645e705c121SKalle Valo /* No need to mark as reserved */ 2646e705c121SKalle Valo spin_lock_bh(&mvm->queue_info_lock); 2647cf961e16SLiad Kaufman mvm->queue_info[queue].status = IWL_MVM_QUEUE_READY; 2648e705c121SKalle Valo spin_unlock_bh(&mvm->queue_info_lock); 2649e705c121SKalle Valo 2650e705c121SKalle Valo /* 2651e705c121SKalle Valo * Even though in theory the peer could have different 2652e705c121SKalle Valo * aggregation reorder buffer sizes for different sessions, 2653e705c121SKalle Valo * our ucode doesn't allow for that and has a global limit 2654e705c121SKalle Valo * for each station. Therefore, use the minimum of all the 2655e705c121SKalle Valo * aggregation sessions and our default value. 2656e705c121SKalle Valo */ 2657e705c121SKalle Valo mvmsta->max_agg_bufsize = 2658e705c121SKalle Valo min(mvmsta->max_agg_bufsize, buf_size); 2659e705c121SKalle Valo mvmsta->lq_sta.lq.agg_frame_cnt_limit = mvmsta->max_agg_bufsize; 2660e705c121SKalle Valo 2661e705c121SKalle Valo IWL_DEBUG_HT(mvm, "Tx aggregation enabled on ra = %pM tid = %d\n", 2662e705c121SKalle Valo sta->addr, tid); 2663e705c121SKalle Valo 2664e705c121SKalle Valo return iwl_mvm_send_lq_cmd(mvm, &mvmsta->lq_sta.lq, false); 2665e705c121SKalle Valo } 2666e705c121SKalle Valo 2667e705c121SKalle Valo int iwl_mvm_sta_tx_agg_stop(struct iwl_mvm *mvm, struct ieee80211_vif *vif, 2668e705c121SKalle Valo struct ieee80211_sta *sta, u16 tid) 2669e705c121SKalle Valo { 2670e705c121SKalle Valo struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta); 2671e705c121SKalle Valo struct iwl_mvm_tid_data *tid_data = &mvmsta->tid_data[tid]; 2672e705c121SKalle Valo u16 txq_id; 2673e705c121SKalle Valo int err; 2674e705c121SKalle Valo 2675e705c121SKalle Valo /* 2676e705c121SKalle Valo * If mac80211 is cleaning its state, then say that we finished since 2677e705c121SKalle Valo * our state has been cleared anyway. 2678e705c121SKalle Valo */ 2679e705c121SKalle Valo if (test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status)) { 2680e705c121SKalle Valo ieee80211_stop_tx_ba_cb_irqsafe(vif, sta->addr, tid); 2681e705c121SKalle Valo return 0; 2682e705c121SKalle Valo } 2683e705c121SKalle Valo 2684e705c121SKalle Valo spin_lock_bh(&mvmsta->lock); 2685e705c121SKalle Valo 2686e705c121SKalle Valo txq_id = tid_data->txq_id; 2687e705c121SKalle Valo 2688e705c121SKalle Valo IWL_DEBUG_TX_QUEUES(mvm, "Stop AGG: sta %d tid %d q %d state %d\n", 2689e705c121SKalle Valo mvmsta->sta_id, tid, txq_id, tid_data->state); 2690e705c121SKalle Valo 2691e705c121SKalle Valo mvmsta->agg_tids &= ~BIT(tid); 2692e705c121SKalle Valo 2693e705c121SKalle Valo spin_lock_bh(&mvm->queue_info_lock); 2694cf961e16SLiad Kaufman /* 2695cf961e16SLiad Kaufman * The TXQ is marked as reserved only if no traffic came through yet 2696cf961e16SLiad Kaufman * This means no traffic has been sent on this TID (agg'd or not), so 2697cf961e16SLiad Kaufman * we no longer have use for the queue. Since it hasn't even been 2698cf961e16SLiad Kaufman * allocated through iwl_mvm_enable_txq, so we can just mark it back as 2699cf961e16SLiad Kaufman * free. 2700cf961e16SLiad Kaufman */ 2701cf961e16SLiad Kaufman if (mvm->queue_info[txq_id].status == IWL_MVM_QUEUE_RESERVED) 2702cf961e16SLiad Kaufman mvm->queue_info[txq_id].status = IWL_MVM_QUEUE_FREE; 27039f9af3d7SLiad Kaufman 2704e705c121SKalle Valo spin_unlock_bh(&mvm->queue_info_lock); 2705e705c121SKalle Valo 2706e705c121SKalle Valo switch (tid_data->state) { 2707e705c121SKalle Valo case IWL_AGG_ON: 2708e705c121SKalle Valo tid_data->ssn = IEEE80211_SEQ_TO_SN(tid_data->seq_number); 2709e705c121SKalle Valo 2710e705c121SKalle Valo IWL_DEBUG_TX_QUEUES(mvm, 2711e705c121SKalle Valo "ssn = %d, next_recl = %d\n", 2712e705c121SKalle Valo tid_data->ssn, tid_data->next_reclaimed); 2713e705c121SKalle Valo 2714e705c121SKalle Valo /* There are still packets for this RA / TID in the HW */ 2715e705c121SKalle Valo if (tid_data->ssn != tid_data->next_reclaimed) { 2716e705c121SKalle Valo tid_data->state = IWL_EMPTYING_HW_QUEUE_DELBA; 2717e705c121SKalle Valo err = 0; 2718e705c121SKalle Valo break; 2719e705c121SKalle Valo } 2720e705c121SKalle Valo 2721e705c121SKalle Valo tid_data->ssn = 0xffff; 2722e705c121SKalle Valo tid_data->state = IWL_AGG_OFF; 2723e705c121SKalle Valo spin_unlock_bh(&mvmsta->lock); 2724e705c121SKalle Valo 2725e705c121SKalle Valo ieee80211_stop_tx_ba_cb_irqsafe(vif, sta->addr, tid); 2726e705c121SKalle Valo 2727e705c121SKalle Valo iwl_mvm_sta_tx_agg(mvm, sta, tid, txq_id, false); 2728e705c121SKalle Valo 2729cf961e16SLiad Kaufman if (!iwl_mvm_is_dqa_supported(mvm)) { 2730cf961e16SLiad Kaufman int mac_queue = vif->hw_queue[tid_to_mac80211_ac[tid]]; 2731cf961e16SLiad Kaufman 2732cf961e16SLiad Kaufman iwl_mvm_disable_txq(mvm, txq_id, mac_queue, tid, 0); 2733cf961e16SLiad Kaufman } 2734e705c121SKalle Valo return 0; 2735e705c121SKalle Valo case IWL_AGG_STARTING: 2736e705c121SKalle Valo case IWL_EMPTYING_HW_QUEUE_ADDBA: 2737e705c121SKalle Valo /* 2738e705c121SKalle Valo * The agg session has been stopped before it was set up. This 2739e705c121SKalle Valo * can happen when the AddBA timer times out for example. 2740e705c121SKalle Valo */ 2741e705c121SKalle Valo 2742e705c121SKalle Valo /* No barriers since we are under mutex */ 2743e705c121SKalle Valo lockdep_assert_held(&mvm->mutex); 2744e705c121SKalle Valo 2745e705c121SKalle Valo ieee80211_stop_tx_ba_cb_irqsafe(vif, sta->addr, tid); 2746e705c121SKalle Valo tid_data->state = IWL_AGG_OFF; 2747e705c121SKalle Valo err = 0; 2748e705c121SKalle Valo break; 2749e705c121SKalle Valo default: 2750e705c121SKalle Valo IWL_ERR(mvm, 2751e705c121SKalle Valo "Stopping AGG while state not ON or starting for %d on %d (%d)\n", 2752e705c121SKalle Valo mvmsta->sta_id, tid, tid_data->state); 2753e705c121SKalle Valo IWL_ERR(mvm, 2754e705c121SKalle Valo "\ttid_data->txq_id = %d\n", tid_data->txq_id); 2755e705c121SKalle Valo err = -EINVAL; 2756e705c121SKalle Valo } 2757e705c121SKalle Valo 2758e705c121SKalle Valo spin_unlock_bh(&mvmsta->lock); 2759e705c121SKalle Valo 2760e705c121SKalle Valo return err; 2761e705c121SKalle Valo } 2762e705c121SKalle Valo 2763e705c121SKalle Valo int iwl_mvm_sta_tx_agg_flush(struct iwl_mvm *mvm, struct ieee80211_vif *vif, 2764e705c121SKalle Valo struct ieee80211_sta *sta, u16 tid) 2765e705c121SKalle Valo { 2766e705c121SKalle Valo struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta); 2767e705c121SKalle Valo struct iwl_mvm_tid_data *tid_data = &mvmsta->tid_data[tid]; 2768e705c121SKalle Valo u16 txq_id; 2769e705c121SKalle Valo enum iwl_mvm_agg_state old_state; 2770e705c121SKalle Valo 2771e705c121SKalle Valo /* 2772e705c121SKalle Valo * First set the agg state to OFF to avoid calling 2773e705c121SKalle Valo * ieee80211_stop_tx_ba_cb in iwl_mvm_check_ratid_empty. 2774e705c121SKalle Valo */ 2775e705c121SKalle Valo spin_lock_bh(&mvmsta->lock); 2776e705c121SKalle Valo txq_id = tid_data->txq_id; 2777e705c121SKalle Valo IWL_DEBUG_TX_QUEUES(mvm, "Flush AGG: sta %d tid %d q %d state %d\n", 2778e705c121SKalle Valo mvmsta->sta_id, tid, txq_id, tid_data->state); 2779e705c121SKalle Valo old_state = tid_data->state; 2780e705c121SKalle Valo tid_data->state = IWL_AGG_OFF; 2781e705c121SKalle Valo mvmsta->agg_tids &= ~BIT(tid); 2782e705c121SKalle Valo spin_unlock_bh(&mvmsta->lock); 2783e705c121SKalle Valo 2784e705c121SKalle Valo spin_lock_bh(&mvm->queue_info_lock); 2785cf961e16SLiad Kaufman /* 2786cf961e16SLiad Kaufman * The TXQ is marked as reserved only if no traffic came through yet 2787cf961e16SLiad Kaufman * This means no traffic has been sent on this TID (agg'd or not), so 2788cf961e16SLiad Kaufman * we no longer have use for the queue. Since it hasn't even been 2789cf961e16SLiad Kaufman * allocated through iwl_mvm_enable_txq, so we can just mark it back as 2790cf961e16SLiad Kaufman * free. 2791cf961e16SLiad Kaufman */ 2792cf961e16SLiad Kaufman if (mvm->queue_info[txq_id].status == IWL_MVM_QUEUE_RESERVED) 2793cf961e16SLiad Kaufman mvm->queue_info[txq_id].status = IWL_MVM_QUEUE_FREE; 2794e705c121SKalle Valo spin_unlock_bh(&mvm->queue_info_lock); 2795e705c121SKalle Valo 2796e705c121SKalle Valo if (old_state >= IWL_AGG_ON) { 2797e705c121SKalle Valo iwl_mvm_drain_sta(mvm, mvmsta, true); 2798e705c121SKalle Valo if (iwl_mvm_flush_tx_path(mvm, BIT(txq_id), 0)) 2799e705c121SKalle Valo IWL_ERR(mvm, "Couldn't flush the AGG queue\n"); 2800e705c121SKalle Valo iwl_trans_wait_tx_queue_empty(mvm->trans, 2801e705c121SKalle Valo mvmsta->tfd_queue_msk); 2802e705c121SKalle Valo iwl_mvm_drain_sta(mvm, mvmsta, false); 2803e705c121SKalle Valo 2804e705c121SKalle Valo iwl_mvm_sta_tx_agg(mvm, sta, tid, txq_id, false); 2805e705c121SKalle Valo 2806cf961e16SLiad Kaufman if (!iwl_mvm_is_dqa_supported(mvm)) { 2807cf961e16SLiad Kaufman int mac_queue = vif->hw_queue[tid_to_mac80211_ac[tid]]; 2808cf961e16SLiad Kaufman 2809cf961e16SLiad Kaufman iwl_mvm_disable_txq(mvm, tid_data->txq_id, mac_queue, 2810cf961e16SLiad Kaufman tid, 0); 2811cf961e16SLiad Kaufman } 2812e705c121SKalle Valo } 2813e705c121SKalle Valo 2814e705c121SKalle Valo return 0; 2815e705c121SKalle Valo } 2816e705c121SKalle Valo 2817e705c121SKalle Valo static int iwl_mvm_set_fw_key_idx(struct iwl_mvm *mvm) 2818e705c121SKalle Valo { 2819e705c121SKalle Valo int i, max = -1, max_offs = -1; 2820e705c121SKalle Valo 2821e705c121SKalle Valo lockdep_assert_held(&mvm->mutex); 2822e705c121SKalle Valo 2823e705c121SKalle Valo /* Pick the unused key offset with the highest 'deleted' 2824e705c121SKalle Valo * counter. Every time a key is deleted, all the counters 2825e705c121SKalle Valo * are incremented and the one that was just deleted is 2826e705c121SKalle Valo * reset to zero. Thus, the highest counter is the one 2827e705c121SKalle Valo * that was deleted longest ago. Pick that one. 2828e705c121SKalle Valo */ 2829e705c121SKalle Valo for (i = 0; i < STA_KEY_MAX_NUM; i++) { 2830e705c121SKalle Valo if (test_bit(i, mvm->fw_key_table)) 2831e705c121SKalle Valo continue; 2832e705c121SKalle Valo if (mvm->fw_key_deleted[i] > max) { 2833e705c121SKalle Valo max = mvm->fw_key_deleted[i]; 2834e705c121SKalle Valo max_offs = i; 2835e705c121SKalle Valo } 2836e705c121SKalle Valo } 2837e705c121SKalle Valo 2838e705c121SKalle Valo if (max_offs < 0) 2839e705c121SKalle Valo return STA_KEY_IDX_INVALID; 2840e705c121SKalle Valo 2841e705c121SKalle Valo return max_offs; 2842e705c121SKalle Valo } 2843e705c121SKalle Valo 28445f7a1847SJohannes Berg static struct iwl_mvm_sta *iwl_mvm_get_key_sta(struct iwl_mvm *mvm, 28454615fd15SEmmanuel Grumbach struct ieee80211_vif *vif, 2846e705c121SKalle Valo struct ieee80211_sta *sta) 2847e705c121SKalle Valo { 2848e705c121SKalle Valo struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 2849e705c121SKalle Valo 28505f7a1847SJohannes Berg if (sta) 28515f7a1847SJohannes Berg return iwl_mvm_sta_from_mac80211(sta); 2852e705c121SKalle Valo 2853e705c121SKalle Valo /* 2854e705c121SKalle Valo * The device expects GTKs for station interfaces to be 2855e705c121SKalle Valo * installed as GTKs for the AP station. If we have no 2856e705c121SKalle Valo * station ID, then use AP's station ID. 2857e705c121SKalle Valo */ 2858e705c121SKalle Valo if (vif->type == NL80211_IFTYPE_STATION && 28590ae98812SSara Sharon mvmvif->ap_sta_id != IWL_MVM_INVALID_STA) { 28604615fd15SEmmanuel Grumbach u8 sta_id = mvmvif->ap_sta_id; 28614615fd15SEmmanuel Grumbach 28627d6a1ab6SEmmanuel Grumbach sta = rcu_dereference_check(mvm->fw_id_to_mac_id[sta_id], 28637d6a1ab6SEmmanuel Grumbach lockdep_is_held(&mvm->mutex)); 28647d6a1ab6SEmmanuel Grumbach 28654615fd15SEmmanuel Grumbach /* 28664615fd15SEmmanuel Grumbach * It is possible that the 'sta' parameter is NULL, 28674615fd15SEmmanuel Grumbach * for example when a GTK is removed - the sta_id will then 28684615fd15SEmmanuel Grumbach * be the AP ID, and no station was passed by mac80211. 28694615fd15SEmmanuel Grumbach */ 28707d6a1ab6SEmmanuel Grumbach if (IS_ERR_OR_NULL(sta)) 28717d6a1ab6SEmmanuel Grumbach return NULL; 28727d6a1ab6SEmmanuel Grumbach 28737d6a1ab6SEmmanuel Grumbach return iwl_mvm_sta_from_mac80211(sta); 28744615fd15SEmmanuel Grumbach } 2875e705c121SKalle Valo 28765f7a1847SJohannes Berg return NULL; 2877e705c121SKalle Valo } 2878e705c121SKalle Valo 2879e705c121SKalle Valo static int iwl_mvm_send_sta_key(struct iwl_mvm *mvm, 2880e705c121SKalle Valo struct iwl_mvm_sta *mvm_sta, 288145c458b4SSara Sharon struct ieee80211_key_conf *key, bool mcast, 28824615fd15SEmmanuel Grumbach u32 tkip_iv32, u16 *tkip_p1k, u32 cmd_flags, 28834615fd15SEmmanuel Grumbach u8 key_offset) 2884e705c121SKalle Valo { 288545c458b4SSara Sharon union { 288645c458b4SSara Sharon struct iwl_mvm_add_sta_key_cmd_v1 cmd_v1; 288745c458b4SSara Sharon struct iwl_mvm_add_sta_key_cmd cmd; 288845c458b4SSara Sharon } u = {}; 2889e705c121SKalle Valo __le16 key_flags; 2890e705c121SKalle Valo int ret; 2891e705c121SKalle Valo u32 status; 2892e705c121SKalle Valo u16 keyidx; 289345c458b4SSara Sharon u64 pn = 0; 289445c458b4SSara Sharon int i, size; 289545c458b4SSara Sharon bool new_api = fw_has_api(&mvm->fw->ucode_capa, 289645c458b4SSara Sharon IWL_UCODE_TLV_API_TKIP_MIC_KEYS); 2897e705c121SKalle Valo 289845c458b4SSara Sharon keyidx = (key->keyidx << STA_KEY_FLG_KEYID_POS) & 2899e705c121SKalle Valo STA_KEY_FLG_KEYID_MSK; 2900e705c121SKalle Valo key_flags = cpu_to_le16(keyidx); 2901e705c121SKalle Valo key_flags |= cpu_to_le16(STA_KEY_FLG_WEP_KEY_MAP); 2902e705c121SKalle Valo 290345c458b4SSara Sharon switch (key->cipher) { 2904e705c121SKalle Valo case WLAN_CIPHER_SUITE_TKIP: 2905e705c121SKalle Valo key_flags |= cpu_to_le16(STA_KEY_FLG_TKIP); 290645c458b4SSara Sharon if (new_api) { 290745c458b4SSara Sharon memcpy((void *)&u.cmd.tx_mic_key, 290845c458b4SSara Sharon &key->key[NL80211_TKIP_DATA_OFFSET_TX_MIC_KEY], 290945c458b4SSara Sharon IWL_MIC_KEY_SIZE); 291045c458b4SSara Sharon 291145c458b4SSara Sharon memcpy((void *)&u.cmd.rx_mic_key, 291245c458b4SSara Sharon &key->key[NL80211_TKIP_DATA_OFFSET_RX_MIC_KEY], 291345c458b4SSara Sharon IWL_MIC_KEY_SIZE); 291445c458b4SSara Sharon pn = atomic64_read(&key->tx_pn); 291545c458b4SSara Sharon 291645c458b4SSara Sharon } else { 291745c458b4SSara Sharon u.cmd_v1.tkip_rx_tsc_byte2 = tkip_iv32; 2918e705c121SKalle Valo for (i = 0; i < 5; i++) 291945c458b4SSara Sharon u.cmd_v1.tkip_rx_ttak[i] = 292045c458b4SSara Sharon cpu_to_le16(tkip_p1k[i]); 292145c458b4SSara Sharon } 292245c458b4SSara Sharon memcpy(u.cmd.common.key, key->key, key->keylen); 2923e705c121SKalle Valo break; 2924e705c121SKalle Valo case WLAN_CIPHER_SUITE_CCMP: 2925e705c121SKalle Valo key_flags |= cpu_to_le16(STA_KEY_FLG_CCM); 292645c458b4SSara Sharon memcpy(u.cmd.common.key, key->key, key->keylen); 292745c458b4SSara Sharon if (new_api) 292845c458b4SSara Sharon pn = atomic64_read(&key->tx_pn); 2929e705c121SKalle Valo break; 2930e705c121SKalle Valo case WLAN_CIPHER_SUITE_WEP104: 2931e705c121SKalle Valo key_flags |= cpu_to_le16(STA_KEY_FLG_WEP_13BYTES); 2932e705c121SKalle Valo /* fall through */ 2933e705c121SKalle Valo case WLAN_CIPHER_SUITE_WEP40: 2934e705c121SKalle Valo key_flags |= cpu_to_le16(STA_KEY_FLG_WEP); 293545c458b4SSara Sharon memcpy(u.cmd.common.key + 3, key->key, key->keylen); 2936e705c121SKalle Valo break; 29372a53d166SAyala Beker case WLAN_CIPHER_SUITE_GCMP_256: 29382a53d166SAyala Beker key_flags |= cpu_to_le16(STA_KEY_FLG_KEY_32BYTES); 29392a53d166SAyala Beker /* fall through */ 29402a53d166SAyala Beker case WLAN_CIPHER_SUITE_GCMP: 29412a53d166SAyala Beker key_flags |= cpu_to_le16(STA_KEY_FLG_GCMP); 294245c458b4SSara Sharon memcpy(u.cmd.common.key, key->key, key->keylen); 294345c458b4SSara Sharon if (new_api) 294445c458b4SSara Sharon pn = atomic64_read(&key->tx_pn); 29452a53d166SAyala Beker break; 2946e705c121SKalle Valo default: 2947e705c121SKalle Valo key_flags |= cpu_to_le16(STA_KEY_FLG_EXT); 294845c458b4SSara Sharon memcpy(u.cmd.common.key, key->key, key->keylen); 2949e705c121SKalle Valo } 2950e705c121SKalle Valo 2951e705c121SKalle Valo if (mcast) 2952e705c121SKalle Valo key_flags |= cpu_to_le16(STA_KEY_MULTICAST); 2953e705c121SKalle Valo 295445c458b4SSara Sharon u.cmd.common.key_offset = key_offset; 295545c458b4SSara Sharon u.cmd.common.key_flags = key_flags; 295645c458b4SSara Sharon u.cmd.common.sta_id = mvm_sta->sta_id; 295745c458b4SSara Sharon 295845c458b4SSara Sharon if (new_api) { 295945c458b4SSara Sharon u.cmd.transmit_seq_cnt = cpu_to_le64(pn); 296045c458b4SSara Sharon size = sizeof(u.cmd); 296145c458b4SSara Sharon } else { 296245c458b4SSara Sharon size = sizeof(u.cmd_v1); 296345c458b4SSara Sharon } 2964e705c121SKalle Valo 2965e705c121SKalle Valo status = ADD_STA_SUCCESS; 2966e705c121SKalle Valo if (cmd_flags & CMD_ASYNC) 296745c458b4SSara Sharon ret = iwl_mvm_send_cmd_pdu(mvm, ADD_STA_KEY, CMD_ASYNC, size, 296845c458b4SSara Sharon &u.cmd); 2969e705c121SKalle Valo else 297045c458b4SSara Sharon ret = iwl_mvm_send_cmd_pdu_status(mvm, ADD_STA_KEY, size, 297145c458b4SSara Sharon &u.cmd, &status); 2972e705c121SKalle Valo 2973e705c121SKalle Valo switch (status) { 2974e705c121SKalle Valo case ADD_STA_SUCCESS: 2975e705c121SKalle Valo IWL_DEBUG_WEP(mvm, "MODIFY_STA: set dynamic key passed\n"); 2976e705c121SKalle Valo break; 2977e705c121SKalle Valo default: 2978e705c121SKalle Valo ret = -EIO; 2979e705c121SKalle Valo IWL_ERR(mvm, "MODIFY_STA: set dynamic key failed\n"); 2980e705c121SKalle Valo break; 2981e705c121SKalle Valo } 2982e705c121SKalle Valo 2983e705c121SKalle Valo return ret; 2984e705c121SKalle Valo } 2985e705c121SKalle Valo 2986e705c121SKalle Valo static int iwl_mvm_send_sta_igtk(struct iwl_mvm *mvm, 2987e705c121SKalle Valo struct ieee80211_key_conf *keyconf, 2988e705c121SKalle Valo u8 sta_id, bool remove_key) 2989e705c121SKalle Valo { 2990e705c121SKalle Valo struct iwl_mvm_mgmt_mcast_key_cmd igtk_cmd = {}; 2991e705c121SKalle Valo 2992e705c121SKalle Valo /* verify the key details match the required command's expectations */ 29938e160ab8SAyala Beker if (WARN_ON((keyconf->flags & IEEE80211_KEY_FLAG_PAIRWISE) || 29948e160ab8SAyala Beker (keyconf->keyidx != 4 && keyconf->keyidx != 5) || 29958e160ab8SAyala Beker (keyconf->cipher != WLAN_CIPHER_SUITE_AES_CMAC && 29968e160ab8SAyala Beker keyconf->cipher != WLAN_CIPHER_SUITE_BIP_GMAC_128 && 29978e160ab8SAyala Beker keyconf->cipher != WLAN_CIPHER_SUITE_BIP_GMAC_256))) 29988e160ab8SAyala Beker return -EINVAL; 29998e160ab8SAyala Beker 30008e160ab8SAyala Beker if (WARN_ON(!iwl_mvm_has_new_rx_api(mvm) && 30018e160ab8SAyala Beker keyconf->cipher != WLAN_CIPHER_SUITE_AES_CMAC)) 3002e705c121SKalle Valo return -EINVAL; 3003e705c121SKalle Valo 3004e705c121SKalle Valo igtk_cmd.key_id = cpu_to_le32(keyconf->keyidx); 3005e705c121SKalle Valo igtk_cmd.sta_id = cpu_to_le32(sta_id); 3006e705c121SKalle Valo 3007e705c121SKalle Valo if (remove_key) { 3008e705c121SKalle Valo igtk_cmd.ctrl_flags |= cpu_to_le32(STA_KEY_NOT_VALID); 3009e705c121SKalle Valo } else { 3010e705c121SKalle Valo struct ieee80211_key_seq seq; 3011e705c121SKalle Valo const u8 *pn; 3012e705c121SKalle Valo 3013aa950524SAyala Beker switch (keyconf->cipher) { 3014aa950524SAyala Beker case WLAN_CIPHER_SUITE_AES_CMAC: 3015aa950524SAyala Beker igtk_cmd.ctrl_flags |= cpu_to_le32(STA_KEY_FLG_CCM); 3016aa950524SAyala Beker break; 30178e160ab8SAyala Beker case WLAN_CIPHER_SUITE_BIP_GMAC_128: 30188e160ab8SAyala Beker case WLAN_CIPHER_SUITE_BIP_GMAC_256: 30198e160ab8SAyala Beker igtk_cmd.ctrl_flags |= cpu_to_le32(STA_KEY_FLG_GCMP); 30208e160ab8SAyala Beker break; 3021aa950524SAyala Beker default: 3022aa950524SAyala Beker return -EINVAL; 3023aa950524SAyala Beker } 3024aa950524SAyala Beker 30258e160ab8SAyala Beker memcpy(igtk_cmd.igtk, keyconf->key, keyconf->keylen); 30268e160ab8SAyala Beker if (keyconf->cipher == WLAN_CIPHER_SUITE_BIP_GMAC_256) 30278e160ab8SAyala Beker igtk_cmd.ctrl_flags |= 30288e160ab8SAyala Beker cpu_to_le32(STA_KEY_FLG_KEY_32BYTES); 3029e705c121SKalle Valo ieee80211_get_key_rx_seq(keyconf, 0, &seq); 3030e705c121SKalle Valo pn = seq.aes_cmac.pn; 3031e705c121SKalle Valo igtk_cmd.receive_seq_cnt = cpu_to_le64(((u64) pn[5] << 0) | 3032e705c121SKalle Valo ((u64) pn[4] << 8) | 3033e705c121SKalle Valo ((u64) pn[3] << 16) | 3034e705c121SKalle Valo ((u64) pn[2] << 24) | 3035e705c121SKalle Valo ((u64) pn[1] << 32) | 3036e705c121SKalle Valo ((u64) pn[0] << 40)); 3037e705c121SKalle Valo } 3038e705c121SKalle Valo 3039e705c121SKalle Valo IWL_DEBUG_INFO(mvm, "%s igtk for sta %u\n", 3040e705c121SKalle Valo remove_key ? "removing" : "installing", 3041e705c121SKalle Valo igtk_cmd.sta_id); 3042e705c121SKalle Valo 30438e160ab8SAyala Beker if (!iwl_mvm_has_new_rx_api(mvm)) { 30448e160ab8SAyala Beker struct iwl_mvm_mgmt_mcast_key_cmd_v1 igtk_cmd_v1 = { 30458e160ab8SAyala Beker .ctrl_flags = igtk_cmd.ctrl_flags, 30468e160ab8SAyala Beker .key_id = igtk_cmd.key_id, 30478e160ab8SAyala Beker .sta_id = igtk_cmd.sta_id, 30488e160ab8SAyala Beker .receive_seq_cnt = igtk_cmd.receive_seq_cnt 30498e160ab8SAyala Beker }; 30508e160ab8SAyala Beker 30518e160ab8SAyala Beker memcpy(igtk_cmd_v1.igtk, igtk_cmd.igtk, 30528e160ab8SAyala Beker ARRAY_SIZE(igtk_cmd_v1.igtk)); 30538e160ab8SAyala Beker return iwl_mvm_send_cmd_pdu(mvm, MGMT_MCAST_KEY, 0, 30548e160ab8SAyala Beker sizeof(igtk_cmd_v1), &igtk_cmd_v1); 30558e160ab8SAyala Beker } 3056e705c121SKalle Valo return iwl_mvm_send_cmd_pdu(mvm, MGMT_MCAST_KEY, 0, 3057e705c121SKalle Valo sizeof(igtk_cmd), &igtk_cmd); 3058e705c121SKalle Valo } 3059e705c121SKalle Valo 3060e705c121SKalle Valo 3061e705c121SKalle Valo static inline u8 *iwl_mvm_get_mac_addr(struct iwl_mvm *mvm, 3062e705c121SKalle Valo struct ieee80211_vif *vif, 3063e705c121SKalle Valo struct ieee80211_sta *sta) 3064e705c121SKalle Valo { 3065e705c121SKalle Valo struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 3066e705c121SKalle Valo 3067e705c121SKalle Valo if (sta) 3068e705c121SKalle Valo return sta->addr; 3069e705c121SKalle Valo 3070e705c121SKalle Valo if (vif->type == NL80211_IFTYPE_STATION && 30710ae98812SSara Sharon mvmvif->ap_sta_id != IWL_MVM_INVALID_STA) { 3072e705c121SKalle Valo u8 sta_id = mvmvif->ap_sta_id; 3073e705c121SKalle Valo sta = rcu_dereference_protected(mvm->fw_id_to_mac_id[sta_id], 3074e705c121SKalle Valo lockdep_is_held(&mvm->mutex)); 3075e705c121SKalle Valo return sta->addr; 3076e705c121SKalle Valo } 3077e705c121SKalle Valo 3078e705c121SKalle Valo 3079e705c121SKalle Valo return NULL; 3080e705c121SKalle Valo } 3081e705c121SKalle Valo 3082e705c121SKalle Valo static int __iwl_mvm_set_sta_key(struct iwl_mvm *mvm, 3083e705c121SKalle Valo struct ieee80211_vif *vif, 3084e705c121SKalle Valo struct ieee80211_sta *sta, 3085e705c121SKalle Valo struct ieee80211_key_conf *keyconf, 30864615fd15SEmmanuel Grumbach u8 key_offset, 3087e705c121SKalle Valo bool mcast) 3088e705c121SKalle Valo { 3089e705c121SKalle Valo struct iwl_mvm_sta *mvm_sta = iwl_mvm_sta_from_mac80211(sta); 3090e705c121SKalle Valo int ret; 3091e705c121SKalle Valo const u8 *addr; 3092e705c121SKalle Valo struct ieee80211_key_seq seq; 3093e705c121SKalle Valo u16 p1k[5]; 3094e705c121SKalle Valo 3095e705c121SKalle Valo switch (keyconf->cipher) { 3096e705c121SKalle Valo case WLAN_CIPHER_SUITE_TKIP: 3097e705c121SKalle Valo addr = iwl_mvm_get_mac_addr(mvm, vif, sta); 3098e705c121SKalle Valo /* get phase 1 key from mac80211 */ 3099e705c121SKalle Valo ieee80211_get_key_rx_seq(keyconf, 0, &seq); 3100e705c121SKalle Valo ieee80211_get_tkip_rx_p1k(keyconf, addr, seq.tkip.iv32, p1k); 3101e705c121SKalle Valo ret = iwl_mvm_send_sta_key(mvm, mvm_sta, keyconf, mcast, 31024615fd15SEmmanuel Grumbach seq.tkip.iv32, p1k, 0, key_offset); 3103e705c121SKalle Valo break; 3104e705c121SKalle Valo case WLAN_CIPHER_SUITE_CCMP: 3105e705c121SKalle Valo case WLAN_CIPHER_SUITE_WEP40: 3106e705c121SKalle Valo case WLAN_CIPHER_SUITE_WEP104: 31072a53d166SAyala Beker case WLAN_CIPHER_SUITE_GCMP: 31082a53d166SAyala Beker case WLAN_CIPHER_SUITE_GCMP_256: 3109e705c121SKalle Valo ret = iwl_mvm_send_sta_key(mvm, mvm_sta, keyconf, mcast, 31104615fd15SEmmanuel Grumbach 0, NULL, 0, key_offset); 3111e705c121SKalle Valo break; 3112e705c121SKalle Valo default: 3113e705c121SKalle Valo ret = iwl_mvm_send_sta_key(mvm, mvm_sta, keyconf, mcast, 31144615fd15SEmmanuel Grumbach 0, NULL, 0, key_offset); 3115e705c121SKalle Valo } 3116e705c121SKalle Valo 3117e705c121SKalle Valo return ret; 3118e705c121SKalle Valo } 3119e705c121SKalle Valo 3120e705c121SKalle Valo static int __iwl_mvm_remove_sta_key(struct iwl_mvm *mvm, u8 sta_id, 3121e705c121SKalle Valo struct ieee80211_key_conf *keyconf, 3122e705c121SKalle Valo bool mcast) 3123e705c121SKalle Valo { 312445c458b4SSara Sharon union { 312545c458b4SSara Sharon struct iwl_mvm_add_sta_key_cmd_v1 cmd_v1; 312645c458b4SSara Sharon struct iwl_mvm_add_sta_key_cmd cmd; 312745c458b4SSara Sharon } u = {}; 312845c458b4SSara Sharon bool new_api = fw_has_api(&mvm->fw->ucode_capa, 312945c458b4SSara Sharon IWL_UCODE_TLV_API_TKIP_MIC_KEYS); 3130e705c121SKalle Valo __le16 key_flags; 313145c458b4SSara Sharon int ret, size; 3132e705c121SKalle Valo u32 status; 3133e705c121SKalle Valo 3134e705c121SKalle Valo key_flags = cpu_to_le16((keyconf->keyidx << STA_KEY_FLG_KEYID_POS) & 3135e705c121SKalle Valo STA_KEY_FLG_KEYID_MSK); 3136e705c121SKalle Valo key_flags |= cpu_to_le16(STA_KEY_FLG_NO_ENC | STA_KEY_FLG_WEP_KEY_MAP); 3137e705c121SKalle Valo key_flags |= cpu_to_le16(STA_KEY_NOT_VALID); 3138e705c121SKalle Valo 3139e705c121SKalle Valo if (mcast) 3140e705c121SKalle Valo key_flags |= cpu_to_le16(STA_KEY_MULTICAST); 3141e705c121SKalle Valo 314245c458b4SSara Sharon /* 314345c458b4SSara Sharon * The fields assigned here are in the same location at the start 314445c458b4SSara Sharon * of the command, so we can do this union trick. 314545c458b4SSara Sharon */ 314645c458b4SSara Sharon u.cmd.common.key_flags = key_flags; 314745c458b4SSara Sharon u.cmd.common.key_offset = keyconf->hw_key_idx; 314845c458b4SSara Sharon u.cmd.common.sta_id = sta_id; 314945c458b4SSara Sharon 315045c458b4SSara Sharon size = new_api ? sizeof(u.cmd) : sizeof(u.cmd_v1); 3151e705c121SKalle Valo 3152e705c121SKalle Valo status = ADD_STA_SUCCESS; 315345c458b4SSara Sharon ret = iwl_mvm_send_cmd_pdu_status(mvm, ADD_STA_KEY, size, &u.cmd, 315445c458b4SSara Sharon &status); 3155e705c121SKalle Valo 3156e705c121SKalle Valo switch (status) { 3157e705c121SKalle Valo case ADD_STA_SUCCESS: 3158e705c121SKalle Valo IWL_DEBUG_WEP(mvm, "MODIFY_STA: remove sta key passed\n"); 3159e705c121SKalle Valo break; 3160e705c121SKalle Valo default: 3161e705c121SKalle Valo ret = -EIO; 3162e705c121SKalle Valo IWL_ERR(mvm, "MODIFY_STA: remove sta key failed\n"); 3163e705c121SKalle Valo break; 3164e705c121SKalle Valo } 3165e705c121SKalle Valo 3166e705c121SKalle Valo return ret; 3167e705c121SKalle Valo } 3168e705c121SKalle Valo 3169e705c121SKalle Valo int iwl_mvm_set_sta_key(struct iwl_mvm *mvm, 3170e705c121SKalle Valo struct ieee80211_vif *vif, 3171e705c121SKalle Valo struct ieee80211_sta *sta, 3172e705c121SKalle Valo struct ieee80211_key_conf *keyconf, 31734615fd15SEmmanuel Grumbach u8 key_offset) 3174e705c121SKalle Valo { 3175e705c121SKalle Valo bool mcast = !(keyconf->flags & IEEE80211_KEY_FLAG_PAIRWISE); 31765f7a1847SJohannes Berg struct iwl_mvm_sta *mvm_sta; 3177e705c121SKalle Valo u8 sta_id; 3178e705c121SKalle Valo int ret; 3179e705c121SKalle Valo static const u8 __maybe_unused zero_addr[ETH_ALEN] = {0}; 3180e705c121SKalle Valo 3181e705c121SKalle Valo lockdep_assert_held(&mvm->mutex); 3182e705c121SKalle Valo 3183e705c121SKalle Valo /* Get the station id from the mvm local station table */ 31845f7a1847SJohannes Berg mvm_sta = iwl_mvm_get_key_sta(mvm, vif, sta); 31855f7a1847SJohannes Berg if (!mvm_sta) { 31865f7a1847SJohannes Berg IWL_ERR(mvm, "Failed to find station\n"); 3187e705c121SKalle Valo return -EINVAL; 3188e705c121SKalle Valo } 31895f7a1847SJohannes Berg sta_id = mvm_sta->sta_id; 3190e705c121SKalle Valo 31918e160ab8SAyala Beker if (keyconf->cipher == WLAN_CIPHER_SUITE_AES_CMAC || 31928e160ab8SAyala Beker keyconf->cipher == WLAN_CIPHER_SUITE_BIP_GMAC_128 || 31938e160ab8SAyala Beker keyconf->cipher == WLAN_CIPHER_SUITE_BIP_GMAC_256) { 3194e705c121SKalle Valo ret = iwl_mvm_send_sta_igtk(mvm, keyconf, sta_id, false); 3195e705c121SKalle Valo goto end; 3196e705c121SKalle Valo } 3197e705c121SKalle Valo 3198e705c121SKalle Valo /* 3199e705c121SKalle Valo * It is possible that the 'sta' parameter is NULL, and thus 3200e705c121SKalle Valo * there is a need to retrieve the sta from the local station table. 3201e705c121SKalle Valo */ 3202e705c121SKalle Valo if (!sta) { 3203e705c121SKalle Valo sta = rcu_dereference_protected(mvm->fw_id_to_mac_id[sta_id], 3204e705c121SKalle Valo lockdep_is_held(&mvm->mutex)); 3205e705c121SKalle Valo if (IS_ERR_OR_NULL(sta)) { 3206e705c121SKalle Valo IWL_ERR(mvm, "Invalid station id\n"); 3207e705c121SKalle Valo return -EINVAL; 3208e705c121SKalle Valo } 3209e705c121SKalle Valo } 3210e705c121SKalle Valo 3211e705c121SKalle Valo if (WARN_ON_ONCE(iwl_mvm_sta_from_mac80211(sta)->vif != vif)) 3212e705c121SKalle Valo return -EINVAL; 3213e705c121SKalle Valo 32144615fd15SEmmanuel Grumbach /* If the key_offset is not pre-assigned, we need to find a 32154615fd15SEmmanuel Grumbach * new offset to use. In normal cases, the offset is not 32164615fd15SEmmanuel Grumbach * pre-assigned, but during HW_RESTART we want to reuse the 32174615fd15SEmmanuel Grumbach * same indices, so we pass them when this function is called. 32184615fd15SEmmanuel Grumbach * 32194615fd15SEmmanuel Grumbach * In D3 entry, we need to hardcoded the indices (because the 32204615fd15SEmmanuel Grumbach * firmware hardcodes the PTK offset to 0). In this case, we 32214615fd15SEmmanuel Grumbach * need to make sure we don't overwrite the hw_key_idx in the 32224615fd15SEmmanuel Grumbach * keyconf structure, because otherwise we cannot configure 32234615fd15SEmmanuel Grumbach * the original ones back when resuming. 3224e705c121SKalle Valo */ 32254615fd15SEmmanuel Grumbach if (key_offset == STA_KEY_IDX_INVALID) { 32264615fd15SEmmanuel Grumbach key_offset = iwl_mvm_set_fw_key_idx(mvm); 32274615fd15SEmmanuel Grumbach if (key_offset == STA_KEY_IDX_INVALID) 3228e705c121SKalle Valo return -ENOSPC; 32294615fd15SEmmanuel Grumbach keyconf->hw_key_idx = key_offset; 3230e705c121SKalle Valo } 3231e705c121SKalle Valo 32324615fd15SEmmanuel Grumbach ret = __iwl_mvm_set_sta_key(mvm, vif, sta, keyconf, key_offset, mcast); 32339c3deeb5SLuca Coelho if (ret) 3234e705c121SKalle Valo goto end; 3235e705c121SKalle Valo 3236e705c121SKalle Valo /* 3237e705c121SKalle Valo * For WEP, the same key is used for multicast and unicast. Upload it 3238e705c121SKalle Valo * again, using the same key offset, and now pointing the other one 3239e705c121SKalle Valo * to the same key slot (offset). 3240e705c121SKalle Valo * If this fails, remove the original as well. 3241e705c121SKalle Valo */ 3242e705c121SKalle Valo if (keyconf->cipher == WLAN_CIPHER_SUITE_WEP40 || 3243e705c121SKalle Valo keyconf->cipher == WLAN_CIPHER_SUITE_WEP104) { 32444615fd15SEmmanuel Grumbach ret = __iwl_mvm_set_sta_key(mvm, vif, sta, keyconf, 32454615fd15SEmmanuel Grumbach key_offset, !mcast); 3246e705c121SKalle Valo if (ret) { 3247e705c121SKalle Valo __iwl_mvm_remove_sta_key(mvm, sta_id, keyconf, mcast); 32489c3deeb5SLuca Coelho goto end; 3249e705c121SKalle Valo } 3250e705c121SKalle Valo } 3251e705c121SKalle Valo 32529c3deeb5SLuca Coelho __set_bit(key_offset, mvm->fw_key_table); 32539c3deeb5SLuca Coelho 3254e705c121SKalle Valo end: 3255e705c121SKalle Valo IWL_DEBUG_WEP(mvm, "key: cipher=%x len=%d idx=%d sta=%pM ret=%d\n", 3256e705c121SKalle Valo keyconf->cipher, keyconf->keylen, keyconf->keyidx, 3257e705c121SKalle Valo sta ? sta->addr : zero_addr, ret); 3258e705c121SKalle Valo return ret; 3259e705c121SKalle Valo } 3260e705c121SKalle Valo 3261e705c121SKalle Valo int iwl_mvm_remove_sta_key(struct iwl_mvm *mvm, 3262e705c121SKalle Valo struct ieee80211_vif *vif, 3263e705c121SKalle Valo struct ieee80211_sta *sta, 3264e705c121SKalle Valo struct ieee80211_key_conf *keyconf) 3265e705c121SKalle Valo { 3266e705c121SKalle Valo bool mcast = !(keyconf->flags & IEEE80211_KEY_FLAG_PAIRWISE); 32675f7a1847SJohannes Berg struct iwl_mvm_sta *mvm_sta; 32680ae98812SSara Sharon u8 sta_id = IWL_MVM_INVALID_STA; 3269e705c121SKalle Valo int ret, i; 3270e705c121SKalle Valo 3271e705c121SKalle Valo lockdep_assert_held(&mvm->mutex); 3272e705c121SKalle Valo 32735f7a1847SJohannes Berg /* Get the station from the mvm local station table */ 32745f7a1847SJohannes Berg mvm_sta = iwl_mvm_get_key_sta(mvm, vif, sta); 3275cd4d23c1SIlan Peer if (!mvm_sta) { 3276cd4d23c1SIlan Peer IWL_ERR(mvm, "Failed to find station\n"); 3277cd4d23c1SIlan Peer return -EINVAL; 3278cd4d23c1SIlan Peer } 3279cd4d23c1SIlan Peer sta_id = mvm_sta->sta_id; 3280e705c121SKalle Valo 3281e705c121SKalle Valo IWL_DEBUG_WEP(mvm, "mvm remove dynamic key: idx=%d sta=%d\n", 3282e705c121SKalle Valo keyconf->keyidx, sta_id); 3283e705c121SKalle Valo 32848e160ab8SAyala Beker if (keyconf->cipher == WLAN_CIPHER_SUITE_AES_CMAC || 32858e160ab8SAyala Beker keyconf->cipher == WLAN_CIPHER_SUITE_BIP_GMAC_128 || 32868e160ab8SAyala Beker keyconf->cipher == WLAN_CIPHER_SUITE_BIP_GMAC_256) 3287e705c121SKalle Valo return iwl_mvm_send_sta_igtk(mvm, keyconf, sta_id, true); 3288e705c121SKalle Valo 3289e705c121SKalle Valo if (!__test_and_clear_bit(keyconf->hw_key_idx, mvm->fw_key_table)) { 3290e705c121SKalle Valo IWL_ERR(mvm, "offset %d not used in fw key table.\n", 3291e705c121SKalle Valo keyconf->hw_key_idx); 3292e705c121SKalle Valo return -ENOENT; 3293e705c121SKalle Valo } 3294e705c121SKalle Valo 3295e705c121SKalle Valo /* track which key was deleted last */ 3296e705c121SKalle Valo for (i = 0; i < STA_KEY_MAX_NUM; i++) { 3297e705c121SKalle Valo if (mvm->fw_key_deleted[i] < U8_MAX) 3298e705c121SKalle Valo mvm->fw_key_deleted[i]++; 3299e705c121SKalle Valo } 3300e705c121SKalle Valo mvm->fw_key_deleted[keyconf->hw_key_idx] = 0; 3301e705c121SKalle Valo 33025f7a1847SJohannes Berg if (!mvm_sta) { 3303e705c121SKalle Valo IWL_DEBUG_WEP(mvm, "station non-existent, early return.\n"); 3304e705c121SKalle Valo return 0; 3305e705c121SKalle Valo } 3306e705c121SKalle Valo 3307e705c121SKalle Valo ret = __iwl_mvm_remove_sta_key(mvm, sta_id, keyconf, mcast); 3308e705c121SKalle Valo if (ret) 3309e705c121SKalle Valo return ret; 3310e705c121SKalle Valo 3311e705c121SKalle Valo /* delete WEP key twice to get rid of (now useless) offset */ 3312e705c121SKalle Valo if (keyconf->cipher == WLAN_CIPHER_SUITE_WEP40 || 3313e705c121SKalle Valo keyconf->cipher == WLAN_CIPHER_SUITE_WEP104) 3314e705c121SKalle Valo ret = __iwl_mvm_remove_sta_key(mvm, sta_id, keyconf, !mcast); 3315e705c121SKalle Valo 3316e705c121SKalle Valo return ret; 3317e705c121SKalle Valo } 3318e705c121SKalle Valo 3319e705c121SKalle Valo void iwl_mvm_update_tkip_key(struct iwl_mvm *mvm, 3320e705c121SKalle Valo struct ieee80211_vif *vif, 3321e705c121SKalle Valo struct ieee80211_key_conf *keyconf, 3322e705c121SKalle Valo struct ieee80211_sta *sta, u32 iv32, 3323e705c121SKalle Valo u16 *phase1key) 3324e705c121SKalle Valo { 3325e705c121SKalle Valo struct iwl_mvm_sta *mvm_sta; 3326e705c121SKalle Valo bool mcast = !(keyconf->flags & IEEE80211_KEY_FLAG_PAIRWISE); 3327e705c121SKalle Valo 3328e705c121SKalle Valo rcu_read_lock(); 3329e705c121SKalle Valo 33305f7a1847SJohannes Berg mvm_sta = iwl_mvm_get_key_sta(mvm, vif, sta); 33315f7a1847SJohannes Berg if (WARN_ON_ONCE(!mvm_sta)) 333212f17211SEmmanuel Grumbach goto unlock; 3333e705c121SKalle Valo iwl_mvm_send_sta_key(mvm, mvm_sta, keyconf, mcast, 33344615fd15SEmmanuel Grumbach iv32, phase1key, CMD_ASYNC, keyconf->hw_key_idx); 333512f17211SEmmanuel Grumbach 333612f17211SEmmanuel Grumbach unlock: 3337e705c121SKalle Valo rcu_read_unlock(); 3338e705c121SKalle Valo } 3339e705c121SKalle Valo 3340e705c121SKalle Valo void iwl_mvm_sta_modify_ps_wake(struct iwl_mvm *mvm, 3341e705c121SKalle Valo struct ieee80211_sta *sta) 3342e705c121SKalle Valo { 3343e705c121SKalle Valo struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta); 3344e705c121SKalle Valo struct iwl_mvm_add_sta_cmd cmd = { 3345e705c121SKalle Valo .add_modify = STA_MODE_MODIFY, 3346e705c121SKalle Valo .sta_id = mvmsta->sta_id, 3347e705c121SKalle Valo .station_flags_msk = cpu_to_le32(STA_FLG_PS), 3348e705c121SKalle Valo .mac_id_n_color = cpu_to_le32(mvmsta->mac_id_n_color), 3349e705c121SKalle Valo }; 3350e705c121SKalle Valo int ret; 3351e705c121SKalle Valo 3352854c5705SSara Sharon ret = iwl_mvm_send_cmd_pdu(mvm, ADD_STA, CMD_ASYNC, 3353854c5705SSara Sharon iwl_mvm_add_sta_cmd_size(mvm), &cmd); 3354e705c121SKalle Valo if (ret) 3355e705c121SKalle Valo IWL_ERR(mvm, "Failed to send ADD_STA command (%d)\n", ret); 3356e705c121SKalle Valo } 3357e705c121SKalle Valo 3358e705c121SKalle Valo void iwl_mvm_sta_modify_sleep_tx_count(struct iwl_mvm *mvm, 3359e705c121SKalle Valo struct ieee80211_sta *sta, 3360e705c121SKalle Valo enum ieee80211_frame_release_type reason, 3361e705c121SKalle Valo u16 cnt, u16 tids, bool more_data, 33629a3fcf91SSara Sharon bool single_sta_queue) 3363e705c121SKalle Valo { 3364e705c121SKalle Valo struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta); 3365e705c121SKalle Valo struct iwl_mvm_add_sta_cmd cmd = { 3366e705c121SKalle Valo .add_modify = STA_MODE_MODIFY, 3367e705c121SKalle Valo .sta_id = mvmsta->sta_id, 3368e705c121SKalle Valo .modify_mask = STA_MODIFY_SLEEPING_STA_TX_COUNT, 3369e705c121SKalle Valo .sleep_tx_count = cpu_to_le16(cnt), 3370e705c121SKalle Valo .mac_id_n_color = cpu_to_le32(mvmsta->mac_id_n_color), 3371e705c121SKalle Valo }; 3372e705c121SKalle Valo int tid, ret; 3373e705c121SKalle Valo unsigned long _tids = tids; 3374e705c121SKalle Valo 3375e705c121SKalle Valo /* convert TIDs to ACs - we don't support TSPEC so that's OK 3376e705c121SKalle Valo * Note that this field is reserved and unused by firmware not 3377e705c121SKalle Valo * supporting GO uAPSD, so it's safe to always do this. 3378e705c121SKalle Valo */ 3379e705c121SKalle Valo for_each_set_bit(tid, &_tids, IWL_MAX_TID_COUNT) 3380e705c121SKalle Valo cmd.awake_acs |= BIT(tid_to_ucode_ac[tid]); 3381e705c121SKalle Valo 33829a3fcf91SSara Sharon /* If we're releasing frames from aggregation or dqa queues then check 33839a3fcf91SSara Sharon * if all the queues that we're releasing frames from, combined, have: 3384e705c121SKalle Valo * - more frames than the service period, in which case more_data 3385e705c121SKalle Valo * needs to be set 3386e705c121SKalle Valo * - fewer than 'cnt' frames, in which case we need to adjust the 3387e705c121SKalle Valo * firmware command (but do that unconditionally) 3388e705c121SKalle Valo */ 33899a3fcf91SSara Sharon if (single_sta_queue) { 3390e705c121SKalle Valo int remaining = cnt; 339136be0eb6SEmmanuel Grumbach int sleep_tx_count; 3392e705c121SKalle Valo 3393e705c121SKalle Valo spin_lock_bh(&mvmsta->lock); 3394e705c121SKalle Valo for_each_set_bit(tid, &_tids, IWL_MAX_TID_COUNT) { 3395e705c121SKalle Valo struct iwl_mvm_tid_data *tid_data; 3396e705c121SKalle Valo u16 n_queued; 3397e705c121SKalle Valo 3398e705c121SKalle Valo tid_data = &mvmsta->tid_data[tid]; 33999a3fcf91SSara Sharon if (WARN(!iwl_mvm_is_dqa_supported(mvm) && 34009a3fcf91SSara Sharon tid_data->state != IWL_AGG_ON && 3401e705c121SKalle Valo tid_data->state != IWL_EMPTYING_HW_QUEUE_DELBA, 3402e705c121SKalle Valo "TID %d state is %d\n", 3403e705c121SKalle Valo tid, tid_data->state)) { 3404e705c121SKalle Valo spin_unlock_bh(&mvmsta->lock); 3405e705c121SKalle Valo ieee80211_sta_eosp(sta); 3406e705c121SKalle Valo return; 3407e705c121SKalle Valo } 3408e705c121SKalle Valo 3409e705c121SKalle Valo n_queued = iwl_mvm_tid_queued(tid_data); 3410e705c121SKalle Valo if (n_queued > remaining) { 3411e705c121SKalle Valo more_data = true; 3412e705c121SKalle Valo remaining = 0; 3413e705c121SKalle Valo break; 3414e705c121SKalle Valo } 3415e705c121SKalle Valo remaining -= n_queued; 3416e705c121SKalle Valo } 341736be0eb6SEmmanuel Grumbach sleep_tx_count = cnt - remaining; 341836be0eb6SEmmanuel Grumbach if (reason == IEEE80211_FRAME_RELEASE_UAPSD) 341936be0eb6SEmmanuel Grumbach mvmsta->sleep_tx_count = sleep_tx_count; 3420e705c121SKalle Valo spin_unlock_bh(&mvmsta->lock); 3421e705c121SKalle Valo 342236be0eb6SEmmanuel Grumbach cmd.sleep_tx_count = cpu_to_le16(sleep_tx_count); 3423e705c121SKalle Valo if (WARN_ON(cnt - remaining == 0)) { 3424e705c121SKalle Valo ieee80211_sta_eosp(sta); 3425e705c121SKalle Valo return; 3426e705c121SKalle Valo } 3427e705c121SKalle Valo } 3428e705c121SKalle Valo 3429e705c121SKalle Valo /* Note: this is ignored by firmware not supporting GO uAPSD */ 3430e705c121SKalle Valo if (more_data) 3431e705c121SKalle Valo cmd.sleep_state_flags |= cpu_to_le16(STA_SLEEP_STATE_MOREDATA); 3432e705c121SKalle Valo 3433e705c121SKalle Valo if (reason == IEEE80211_FRAME_RELEASE_PSPOLL) { 3434e705c121SKalle Valo mvmsta->next_status_eosp = true; 3435e705c121SKalle Valo cmd.sleep_state_flags |= cpu_to_le16(STA_SLEEP_STATE_PS_POLL); 3436e705c121SKalle Valo } else { 3437e705c121SKalle Valo cmd.sleep_state_flags |= cpu_to_le16(STA_SLEEP_STATE_UAPSD); 3438e705c121SKalle Valo } 3439e705c121SKalle Valo 3440156f92f2SEmmanuel Grumbach /* block the Tx queues until the FW updated the sleep Tx count */ 3441156f92f2SEmmanuel Grumbach iwl_trans_block_txq_ptrs(mvm->trans, true); 3442156f92f2SEmmanuel Grumbach 3443156f92f2SEmmanuel Grumbach ret = iwl_mvm_send_cmd_pdu(mvm, ADD_STA, 3444156f92f2SEmmanuel Grumbach CMD_ASYNC | CMD_WANT_ASYNC_CALLBACK, 3445854c5705SSara Sharon iwl_mvm_add_sta_cmd_size(mvm), &cmd); 3446e705c121SKalle Valo if (ret) 3447e705c121SKalle Valo IWL_ERR(mvm, "Failed to send ADD_STA command (%d)\n", ret); 3448e705c121SKalle Valo } 3449e705c121SKalle Valo 3450e705c121SKalle Valo void iwl_mvm_rx_eosp_notif(struct iwl_mvm *mvm, 3451e705c121SKalle Valo struct iwl_rx_cmd_buffer *rxb) 3452e705c121SKalle Valo { 3453e705c121SKalle Valo struct iwl_rx_packet *pkt = rxb_addr(rxb); 3454e705c121SKalle Valo struct iwl_mvm_eosp_notification *notif = (void *)pkt->data; 3455e705c121SKalle Valo struct ieee80211_sta *sta; 3456e705c121SKalle Valo u32 sta_id = le32_to_cpu(notif->sta_id); 3457e705c121SKalle Valo 3458e705c121SKalle Valo if (WARN_ON_ONCE(sta_id >= IWL_MVM_STATION_COUNT)) 3459e705c121SKalle Valo return; 3460e705c121SKalle Valo 3461e705c121SKalle Valo rcu_read_lock(); 3462e705c121SKalle Valo sta = rcu_dereference(mvm->fw_id_to_mac_id[sta_id]); 3463e705c121SKalle Valo if (!IS_ERR_OR_NULL(sta)) 3464e705c121SKalle Valo ieee80211_sta_eosp(sta); 3465e705c121SKalle Valo rcu_read_unlock(); 3466e705c121SKalle Valo } 3467e705c121SKalle Valo 3468e705c121SKalle Valo void iwl_mvm_sta_modify_disable_tx(struct iwl_mvm *mvm, 3469e705c121SKalle Valo struct iwl_mvm_sta *mvmsta, bool disable) 3470e705c121SKalle Valo { 3471e705c121SKalle Valo struct iwl_mvm_add_sta_cmd cmd = { 3472e705c121SKalle Valo .add_modify = STA_MODE_MODIFY, 3473e705c121SKalle Valo .sta_id = mvmsta->sta_id, 3474e705c121SKalle Valo .station_flags = disable ? cpu_to_le32(STA_FLG_DISABLE_TX) : 0, 3475e705c121SKalle Valo .station_flags_msk = cpu_to_le32(STA_FLG_DISABLE_TX), 3476e705c121SKalle Valo .mac_id_n_color = cpu_to_le32(mvmsta->mac_id_n_color), 3477e705c121SKalle Valo }; 3478e705c121SKalle Valo int ret; 3479e705c121SKalle Valo 3480854c5705SSara Sharon ret = iwl_mvm_send_cmd_pdu(mvm, ADD_STA, CMD_ASYNC, 3481854c5705SSara Sharon iwl_mvm_add_sta_cmd_size(mvm), &cmd); 3482e705c121SKalle Valo if (ret) 3483e705c121SKalle Valo IWL_ERR(mvm, "Failed to send ADD_STA command (%d)\n", ret); 3484e705c121SKalle Valo } 3485e705c121SKalle Valo 3486e705c121SKalle Valo void iwl_mvm_sta_modify_disable_tx_ap(struct iwl_mvm *mvm, 3487e705c121SKalle Valo struct ieee80211_sta *sta, 3488e705c121SKalle Valo bool disable) 3489e705c121SKalle Valo { 3490e705c121SKalle Valo struct iwl_mvm_sta *mvm_sta = iwl_mvm_sta_from_mac80211(sta); 3491e705c121SKalle Valo 3492e705c121SKalle Valo spin_lock_bh(&mvm_sta->lock); 3493e705c121SKalle Valo 3494e705c121SKalle Valo if (mvm_sta->disable_tx == disable) { 3495e705c121SKalle Valo spin_unlock_bh(&mvm_sta->lock); 3496e705c121SKalle Valo return; 3497e705c121SKalle Valo } 3498e705c121SKalle Valo 3499e705c121SKalle Valo mvm_sta->disable_tx = disable; 3500e705c121SKalle Valo 3501e705c121SKalle Valo /* 3502e705c121SKalle Valo * Tell mac80211 to start/stop queuing tx for this station, 3503e705c121SKalle Valo * but don't stop queuing if there are still pending frames 3504e705c121SKalle Valo * for this station. 3505e705c121SKalle Valo */ 3506e705c121SKalle Valo if (disable || !atomic_read(&mvm->pending_frames[mvm_sta->sta_id])) 3507e705c121SKalle Valo ieee80211_sta_block_awake(mvm->hw, sta, disable); 3508e705c121SKalle Valo 3509e705c121SKalle Valo iwl_mvm_sta_modify_disable_tx(mvm, mvm_sta, disable); 3510e705c121SKalle Valo 3511e705c121SKalle Valo spin_unlock_bh(&mvm_sta->lock); 3512e705c121SKalle Valo } 3513e705c121SKalle Valo 3514e705c121SKalle Valo void iwl_mvm_modify_all_sta_disable_tx(struct iwl_mvm *mvm, 3515e705c121SKalle Valo struct iwl_mvm_vif *mvmvif, 3516e705c121SKalle Valo bool disable) 3517e705c121SKalle Valo { 3518e705c121SKalle Valo struct ieee80211_sta *sta; 3519e705c121SKalle Valo struct iwl_mvm_sta *mvm_sta; 3520e705c121SKalle Valo int i; 3521e705c121SKalle Valo 3522e705c121SKalle Valo lockdep_assert_held(&mvm->mutex); 3523e705c121SKalle Valo 3524e705c121SKalle Valo /* Block/unblock all the stations of the given mvmvif */ 35250ae98812SSara Sharon for (i = 0; i < ARRAY_SIZE(mvm->fw_id_to_mac_id); i++) { 3526e705c121SKalle Valo sta = rcu_dereference_protected(mvm->fw_id_to_mac_id[i], 3527e705c121SKalle Valo lockdep_is_held(&mvm->mutex)); 3528e705c121SKalle Valo if (IS_ERR_OR_NULL(sta)) 3529e705c121SKalle Valo continue; 3530e705c121SKalle Valo 3531e705c121SKalle Valo mvm_sta = iwl_mvm_sta_from_mac80211(sta); 3532e705c121SKalle Valo if (mvm_sta->mac_id_n_color != 3533e705c121SKalle Valo FW_CMD_ID_AND_COLOR(mvmvif->id, mvmvif->color)) 3534e705c121SKalle Valo continue; 3535e705c121SKalle Valo 3536e705c121SKalle Valo iwl_mvm_sta_modify_disable_tx_ap(mvm, sta, disable); 3537e705c121SKalle Valo } 3538e705c121SKalle Valo } 3539e705c121SKalle Valo 3540e705c121SKalle Valo void iwl_mvm_csa_client_absent(struct iwl_mvm *mvm, struct ieee80211_vif *vif) 3541e705c121SKalle Valo { 3542e705c121SKalle Valo struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 3543e705c121SKalle Valo struct iwl_mvm_sta *mvmsta; 3544e705c121SKalle Valo 3545e705c121SKalle Valo rcu_read_lock(); 3546e705c121SKalle Valo 3547e705c121SKalle Valo mvmsta = iwl_mvm_sta_from_staid_rcu(mvm, mvmvif->ap_sta_id); 3548e705c121SKalle Valo 3549e705c121SKalle Valo if (!WARN_ON(!mvmsta)) 3550e705c121SKalle Valo iwl_mvm_sta_modify_disable_tx(mvm, mvmsta, true); 3551e705c121SKalle Valo 3552e705c121SKalle Valo rcu_read_unlock(); 3553e705c121SKalle Valo } 3554