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; 226e71ca5eaSEmmanuel Grumbach add_sta_cmd.sp_length = sta->max_sp ? sta->max_sp * 2 : 128; 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); 498e3df1e4bSSharon Dvir if (WARN_ON(!mvmsta)) 499e3df1e4bSSharon Dvir return -EINVAL; 50001796ff2SSara Sharon 50101796ff2SSara Sharon disable_agg_tids = iwl_mvm_remove_sta_queue_marking(mvm, queue); 50201796ff2SSara Sharon /* Disable the queue */ 50301796ff2SSara Sharon if (disable_agg_tids) 50401796ff2SSara Sharon iwl_mvm_invalidate_sta_queue(mvm, queue, 50501796ff2SSara Sharon disable_agg_tids, false); 50601796ff2SSara Sharon 50701796ff2SSara Sharon ret = iwl_mvm_disable_txq(mvm, queue, 50801796ff2SSara Sharon mvmsta->vif->hw_queue[txq_curr_ac], 50901796ff2SSara Sharon tid, 0); 51001796ff2SSara Sharon if (ret) { 51101796ff2SSara Sharon /* Re-mark the inactive queue as inactive */ 51201796ff2SSara Sharon spin_lock_bh(&mvm->queue_info_lock); 51301796ff2SSara Sharon mvm->queue_info[queue].status = IWL_MVM_QUEUE_INACTIVE; 51401796ff2SSara Sharon spin_unlock_bh(&mvm->queue_info_lock); 51501796ff2SSara Sharon IWL_ERR(mvm, 51601796ff2SSara Sharon "Failed to free inactive queue %d (ret=%d)\n", 51701796ff2SSara Sharon queue, ret); 51801796ff2SSara Sharon 51901796ff2SSara Sharon return ret; 52001796ff2SSara Sharon } 52101796ff2SSara Sharon 52201796ff2SSara Sharon /* If TXQ is allocated to another STA, update removal in FW */ 52301796ff2SSara Sharon if (!same_sta) 52401796ff2SSara Sharon iwl_mvm_invalidate_sta_queue(mvm, queue, 0, true); 52501796ff2SSara Sharon 52601796ff2SSara Sharon return 0; 52701796ff2SSara Sharon } 52801796ff2SSara Sharon 52942db09c1SLiad Kaufman static int iwl_mvm_get_shared_queue(struct iwl_mvm *mvm, 53042db09c1SLiad Kaufman unsigned long tfd_queue_mask, u8 ac) 53142db09c1SLiad Kaufman { 53242db09c1SLiad Kaufman int queue = 0; 53342db09c1SLiad Kaufman u8 ac_to_queue[IEEE80211_NUM_ACS]; 53442db09c1SLiad Kaufman int i; 53542db09c1SLiad Kaufman 53642db09c1SLiad Kaufman lockdep_assert_held(&mvm->queue_info_lock); 537bb49701bSSara Sharon if (WARN_ON(iwl_mvm_has_new_tx_api(mvm))) 538bb49701bSSara Sharon return -EINVAL; 53942db09c1SLiad Kaufman 54042db09c1SLiad Kaufman memset(&ac_to_queue, IEEE80211_INVAL_HW_QUEUE, sizeof(ac_to_queue)); 54142db09c1SLiad Kaufman 54242db09c1SLiad Kaufman /* See what ACs the existing queues for this STA have */ 54342db09c1SLiad Kaufman for_each_set_bit(i, &tfd_queue_mask, IWL_MVM_DQA_MAX_DATA_QUEUE) { 54442db09c1SLiad Kaufman /* Only DATA queues can be shared */ 54542db09c1SLiad Kaufman if (i < IWL_MVM_DQA_MIN_DATA_QUEUE && 54642db09c1SLiad Kaufman i != IWL_MVM_DQA_BSS_CLIENT_QUEUE) 54742db09c1SLiad Kaufman continue; 54842db09c1SLiad Kaufman 5499f9af3d7SLiad Kaufman /* Don't try and take queues being reconfigured */ 5509f9af3d7SLiad Kaufman if (mvm->queue_info[queue].status == 5519f9af3d7SLiad Kaufman IWL_MVM_QUEUE_RECONFIGURING) 5529f9af3d7SLiad Kaufman continue; 5539f9af3d7SLiad Kaufman 55442db09c1SLiad Kaufman ac_to_queue[mvm->queue_info[i].mac80211_ac] = i; 55542db09c1SLiad Kaufman } 55642db09c1SLiad Kaufman 55742db09c1SLiad Kaufman /* 55842db09c1SLiad Kaufman * The queue to share is chosen only from DATA queues as follows (in 55942db09c1SLiad Kaufman * descending priority): 56042db09c1SLiad Kaufman * 1. An AC_BE queue 56142db09c1SLiad Kaufman * 2. Same AC queue 56242db09c1SLiad Kaufman * 3. Highest AC queue that is lower than new AC 56342db09c1SLiad Kaufman * 4. Any existing AC (there always is at least 1 DATA queue) 56442db09c1SLiad Kaufman */ 56542db09c1SLiad Kaufman 56642db09c1SLiad Kaufman /* Priority 1: An AC_BE queue */ 56742db09c1SLiad Kaufman if (ac_to_queue[IEEE80211_AC_BE] != IEEE80211_INVAL_HW_QUEUE) 56842db09c1SLiad Kaufman queue = ac_to_queue[IEEE80211_AC_BE]; 56942db09c1SLiad Kaufman /* Priority 2: Same AC queue */ 57042db09c1SLiad Kaufman else if (ac_to_queue[ac] != IEEE80211_INVAL_HW_QUEUE) 57142db09c1SLiad Kaufman queue = ac_to_queue[ac]; 57242db09c1SLiad Kaufman /* Priority 3a: If new AC is VO and VI exists - use VI */ 57342db09c1SLiad Kaufman else if (ac == IEEE80211_AC_VO && 57442db09c1SLiad Kaufman ac_to_queue[IEEE80211_AC_VI] != IEEE80211_INVAL_HW_QUEUE) 57542db09c1SLiad Kaufman queue = ac_to_queue[IEEE80211_AC_VI]; 57642db09c1SLiad Kaufman /* Priority 3b: No BE so only AC less than the new one is BK */ 57742db09c1SLiad Kaufman else if (ac_to_queue[IEEE80211_AC_BK] != IEEE80211_INVAL_HW_QUEUE) 57842db09c1SLiad Kaufman queue = ac_to_queue[IEEE80211_AC_BK]; 57942db09c1SLiad Kaufman /* Priority 4a: No BE nor BK - use VI if exists */ 58042db09c1SLiad Kaufman else if (ac_to_queue[IEEE80211_AC_VI] != IEEE80211_INVAL_HW_QUEUE) 58142db09c1SLiad Kaufman queue = ac_to_queue[IEEE80211_AC_VI]; 58242db09c1SLiad Kaufman /* Priority 4b: No BE, BK nor VI - use VO if exists */ 58342db09c1SLiad Kaufman else if (ac_to_queue[IEEE80211_AC_VO] != IEEE80211_INVAL_HW_QUEUE) 58442db09c1SLiad Kaufman queue = ac_to_queue[IEEE80211_AC_VO]; 58542db09c1SLiad Kaufman 58642db09c1SLiad Kaufman /* Make sure queue found (or not) is legal */ 5879f9af3d7SLiad Kaufman if (!iwl_mvm_is_dqa_data_queue(mvm, queue) && 5889f9af3d7SLiad Kaufman !iwl_mvm_is_dqa_mgmt_queue(mvm, queue) && 5899f9af3d7SLiad Kaufman (queue != IWL_MVM_DQA_BSS_CLIENT_QUEUE)) { 59042db09c1SLiad Kaufman IWL_ERR(mvm, "No DATA queues available to share\n"); 5919f9af3d7SLiad Kaufman return -ENOSPC; 5929f9af3d7SLiad Kaufman } 5939f9af3d7SLiad Kaufman 5949f9af3d7SLiad Kaufman /* Make sure the queue isn't in the middle of being reconfigured */ 5959f9af3d7SLiad Kaufman if (mvm->queue_info[queue].status == IWL_MVM_QUEUE_RECONFIGURING) { 5969f9af3d7SLiad Kaufman IWL_ERR(mvm, 5979f9af3d7SLiad Kaufman "TXQ %d is in the middle of re-config - try again\n", 5989f9af3d7SLiad Kaufman queue); 5999f9af3d7SLiad Kaufman return -EBUSY; 60042db09c1SLiad Kaufman } 60142db09c1SLiad Kaufman 60242db09c1SLiad Kaufman return queue; 60342db09c1SLiad Kaufman } 60442db09c1SLiad Kaufman 60558f2cc57SLiad Kaufman /* 6069f9af3d7SLiad Kaufman * If a given queue has a higher AC than the TID stream that is being compared 6079f9af3d7SLiad Kaufman * to, the queue needs to be redirected to the lower AC. This function does that 60858f2cc57SLiad Kaufman * in such a case, otherwise - if no redirection required - it does nothing, 60958f2cc57SLiad Kaufman * unless the %force param is true. 61058f2cc57SLiad Kaufman */ 6119f9af3d7SLiad Kaufman int iwl_mvm_scd_queue_redirect(struct iwl_mvm *mvm, int queue, int tid, 61258f2cc57SLiad Kaufman int ac, int ssn, unsigned int wdg_timeout, 61358f2cc57SLiad Kaufman bool force) 61458f2cc57SLiad Kaufman { 61558f2cc57SLiad Kaufman struct iwl_scd_txq_cfg_cmd cmd = { 61658f2cc57SLiad Kaufman .scd_queue = queue, 617f7c692deSLiad Kaufman .action = SCD_CFG_DISABLE_QUEUE, 61858f2cc57SLiad Kaufman }; 61958f2cc57SLiad Kaufman bool shared_queue; 62058f2cc57SLiad Kaufman unsigned long mq; 62158f2cc57SLiad Kaufman int ret; 62258f2cc57SLiad Kaufman 623bb49701bSSara Sharon if (WARN_ON(iwl_mvm_has_new_tx_api(mvm))) 624bb49701bSSara Sharon return -EINVAL; 625bb49701bSSara Sharon 62658f2cc57SLiad Kaufman /* 62758f2cc57SLiad Kaufman * If the AC is lower than current one - FIFO needs to be redirected to 62858f2cc57SLiad Kaufman * the lowest one of the streams in the queue. Check if this is needed 62958f2cc57SLiad Kaufman * here. 63058f2cc57SLiad Kaufman * Notice that the enum ieee80211_ac_numbers is "flipped", so BK is with 63158f2cc57SLiad Kaufman * value 3 and VO with value 0, so to check if ac X is lower than ac Y 63258f2cc57SLiad Kaufman * we need to check if the numerical value of X is LARGER than of Y. 63358f2cc57SLiad Kaufman */ 63458f2cc57SLiad Kaufman spin_lock_bh(&mvm->queue_info_lock); 63558f2cc57SLiad Kaufman if (ac <= mvm->queue_info[queue].mac80211_ac && !force) { 63658f2cc57SLiad Kaufman spin_unlock_bh(&mvm->queue_info_lock); 63758f2cc57SLiad Kaufman 63858f2cc57SLiad Kaufman IWL_DEBUG_TX_QUEUES(mvm, 63958f2cc57SLiad Kaufman "No redirection needed on TXQ #%d\n", 64058f2cc57SLiad Kaufman queue); 64158f2cc57SLiad Kaufman return 0; 64258f2cc57SLiad Kaufman } 64358f2cc57SLiad Kaufman 64458f2cc57SLiad Kaufman cmd.sta_id = mvm->queue_info[queue].ra_sta_id; 64558f2cc57SLiad Kaufman cmd.tx_fifo = iwl_mvm_ac_to_tx_fifo[mvm->queue_info[queue].mac80211_ac]; 646edbe961cSLiad Kaufman cmd.tid = mvm->queue_info[queue].txq_tid; 64758f2cc57SLiad Kaufman mq = mvm->queue_info[queue].hw_queue_to_mac80211; 64858f2cc57SLiad Kaufman shared_queue = (mvm->queue_info[queue].hw_queue_refcount > 1); 64958f2cc57SLiad Kaufman spin_unlock_bh(&mvm->queue_info_lock); 65058f2cc57SLiad Kaufman 6519f9af3d7SLiad Kaufman IWL_DEBUG_TX_QUEUES(mvm, "Redirecting TXQ #%d to FIFO #%d\n", 65258f2cc57SLiad Kaufman queue, iwl_mvm_ac_to_tx_fifo[ac]); 65358f2cc57SLiad Kaufman 65458f2cc57SLiad Kaufman /* Stop MAC queues and wait for this queue to empty */ 65558f2cc57SLiad Kaufman iwl_mvm_stop_mac_queues(mvm, mq); 65658f2cc57SLiad Kaufman ret = iwl_trans_wait_tx_queue_empty(mvm->trans, BIT(queue)); 65758f2cc57SLiad Kaufman if (ret) { 65858f2cc57SLiad Kaufman IWL_ERR(mvm, "Error draining queue %d before reconfig\n", 65958f2cc57SLiad Kaufman queue); 66058f2cc57SLiad Kaufman ret = -EIO; 66158f2cc57SLiad Kaufman goto out; 66258f2cc57SLiad Kaufman } 66358f2cc57SLiad Kaufman 66458f2cc57SLiad Kaufman /* Before redirecting the queue we need to de-activate it */ 66558f2cc57SLiad Kaufman iwl_trans_txq_disable(mvm->trans, queue, false); 66658f2cc57SLiad Kaufman ret = iwl_mvm_send_cmd_pdu(mvm, SCD_QUEUE_CFG, 0, sizeof(cmd), &cmd); 66758f2cc57SLiad Kaufman if (ret) 66858f2cc57SLiad Kaufman IWL_ERR(mvm, "Failed SCD disable TXQ %d (ret=%d)\n", queue, 66958f2cc57SLiad Kaufman ret); 67058f2cc57SLiad Kaufman 67158f2cc57SLiad Kaufman /* Make sure the SCD wrptr is correctly set before reconfiguring */ 672ca3b9c6bSSara Sharon iwl_trans_txq_enable_cfg(mvm->trans, queue, ssn, NULL, wdg_timeout); 67358f2cc57SLiad Kaufman 674edbe961cSLiad Kaufman /* Update the TID "owner" of the queue */ 675edbe961cSLiad Kaufman spin_lock_bh(&mvm->queue_info_lock); 676edbe961cSLiad Kaufman mvm->queue_info[queue].txq_tid = tid; 677edbe961cSLiad Kaufman spin_unlock_bh(&mvm->queue_info_lock); 678edbe961cSLiad Kaufman 67958f2cc57SLiad Kaufman /* TODO: Work-around SCD bug when moving back by multiples of 0x40 */ 68058f2cc57SLiad Kaufman 68158f2cc57SLiad Kaufman /* Redirect to lower AC */ 68258f2cc57SLiad Kaufman iwl_mvm_reconfig_scd(mvm, queue, iwl_mvm_ac_to_tx_fifo[ac], 68358f2cc57SLiad Kaufman cmd.sta_id, tid, LINK_QUAL_AGG_FRAME_LIMIT_DEF, 68458f2cc57SLiad Kaufman ssn); 68558f2cc57SLiad Kaufman 68658f2cc57SLiad Kaufman /* Update AC marking of the queue */ 68758f2cc57SLiad Kaufman spin_lock_bh(&mvm->queue_info_lock); 68858f2cc57SLiad Kaufman mvm->queue_info[queue].mac80211_ac = ac; 68958f2cc57SLiad Kaufman spin_unlock_bh(&mvm->queue_info_lock); 69058f2cc57SLiad Kaufman 69158f2cc57SLiad Kaufman /* 69258f2cc57SLiad Kaufman * Mark queue as shared in transport if shared 69358f2cc57SLiad Kaufman * Note this has to be done after queue enablement because enablement 69458f2cc57SLiad Kaufman * can also set this value, and there is no indication there to shared 69558f2cc57SLiad Kaufman * queues 69658f2cc57SLiad Kaufman */ 69758f2cc57SLiad Kaufman if (shared_queue) 69858f2cc57SLiad Kaufman iwl_trans_txq_set_shared_mode(mvm->trans, queue, true); 69958f2cc57SLiad Kaufman 70058f2cc57SLiad Kaufman out: 70158f2cc57SLiad Kaufman /* Continue using the MAC queues */ 70258f2cc57SLiad Kaufman iwl_mvm_start_mac_queues(mvm, mq); 70358f2cc57SLiad Kaufman 70458f2cc57SLiad Kaufman return ret; 70558f2cc57SLiad Kaufman } 70658f2cc57SLiad Kaufman 707310181ecSSara Sharon static int iwl_mvm_sta_alloc_queue_tvqm(struct iwl_mvm *mvm, 708310181ecSSara Sharon struct ieee80211_sta *sta, u8 ac, 709310181ecSSara Sharon int tid) 710310181ecSSara Sharon { 711310181ecSSara Sharon struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta); 712310181ecSSara Sharon unsigned int wdg_timeout = 713310181ecSSara Sharon iwl_mvm_get_wd_timeout(mvm, mvmsta->vif, false, false); 714310181ecSSara Sharon u8 mac_queue = mvmsta->vif->hw_queue[ac]; 715310181ecSSara Sharon int queue = -1; 716310181ecSSara Sharon 717310181ecSSara Sharon lockdep_assert_held(&mvm->mutex); 718310181ecSSara Sharon 719310181ecSSara Sharon IWL_DEBUG_TX_QUEUES(mvm, 720310181ecSSara Sharon "Allocating queue for sta %d on tid %d\n", 721310181ecSSara Sharon mvmsta->sta_id, tid); 722310181ecSSara Sharon queue = iwl_mvm_tvqm_enable_txq(mvm, mac_queue, mvmsta->sta_id, tid, 723310181ecSSara Sharon wdg_timeout); 724310181ecSSara Sharon if (queue < 0) 725310181ecSSara Sharon return queue; 726310181ecSSara Sharon 727310181ecSSara Sharon IWL_DEBUG_TX_QUEUES(mvm, "Allocated queue is %d\n", queue); 728310181ecSSara Sharon 729310181ecSSara Sharon spin_lock_bh(&mvmsta->lock); 730310181ecSSara Sharon mvmsta->tid_data[tid].txq_id = queue; 731310181ecSSara Sharon mvmsta->tid_data[tid].is_tid_active = true; 732310181ecSSara Sharon mvmsta->tfd_queue_msk |= BIT(queue); 733310181ecSSara Sharon spin_unlock_bh(&mvmsta->lock); 734310181ecSSara Sharon 735310181ecSSara Sharon spin_lock_bh(&mvm->queue_info_lock); 736310181ecSSara Sharon mvm->queue_info[queue].status = IWL_MVM_QUEUE_READY; 737310181ecSSara Sharon spin_unlock_bh(&mvm->queue_info_lock); 738310181ecSSara Sharon 739310181ecSSara Sharon return 0; 740310181ecSSara Sharon } 741310181ecSSara Sharon 74224afba76SLiad Kaufman static int iwl_mvm_sta_alloc_queue(struct iwl_mvm *mvm, 74324afba76SLiad Kaufman struct ieee80211_sta *sta, u8 ac, int tid, 74424afba76SLiad Kaufman struct ieee80211_hdr *hdr) 74524afba76SLiad Kaufman { 74624afba76SLiad Kaufman struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta); 74724afba76SLiad Kaufman struct iwl_trans_txq_scd_cfg cfg = { 74824afba76SLiad Kaufman .fifo = iwl_mvm_ac_to_tx_fifo[ac], 74924afba76SLiad Kaufman .sta_id = mvmsta->sta_id, 75024afba76SLiad Kaufman .tid = tid, 75124afba76SLiad Kaufman .frame_limit = IWL_FRAME_LIMIT, 75224afba76SLiad Kaufman }; 75324afba76SLiad Kaufman unsigned int wdg_timeout = 75424afba76SLiad Kaufman iwl_mvm_get_wd_timeout(mvm, mvmsta->vif, false, false); 75524afba76SLiad Kaufman u8 mac_queue = mvmsta->vif->hw_queue[ac]; 75624afba76SLiad Kaufman int queue = -1; 75701796ff2SSara Sharon bool using_inactive_queue = false, same_sta = false; 7589794c64fSLiad Kaufman unsigned long disable_agg_tids = 0; 7599794c64fSLiad Kaufman enum iwl_mvm_agg_state queue_state; 76042db09c1SLiad Kaufman bool shared_queue = false; 76124afba76SLiad Kaufman int ssn; 76242db09c1SLiad Kaufman unsigned long tfd_queue_mask; 763cf961e16SLiad Kaufman int ret; 76424afba76SLiad Kaufman 76524afba76SLiad Kaufman lockdep_assert_held(&mvm->mutex); 76624afba76SLiad Kaufman 767310181ecSSara Sharon if (iwl_mvm_has_new_tx_api(mvm)) 768310181ecSSara Sharon return iwl_mvm_sta_alloc_queue_tvqm(mvm, sta, ac, tid); 769310181ecSSara Sharon 77042db09c1SLiad Kaufman spin_lock_bh(&mvmsta->lock); 77142db09c1SLiad Kaufman tfd_queue_mask = mvmsta->tfd_queue_msk; 77242db09c1SLiad Kaufman spin_unlock_bh(&mvmsta->lock); 77342db09c1SLiad Kaufman 774d2515a99SLiad Kaufman spin_lock_bh(&mvm->queue_info_lock); 77524afba76SLiad Kaufman 77624afba76SLiad Kaufman /* 77724afba76SLiad Kaufman * Non-QoS, QoS NDP and MGMT frames should go to a MGMT queue, if one 77824afba76SLiad Kaufman * exists 77924afba76SLiad Kaufman */ 78024afba76SLiad Kaufman if (!ieee80211_is_data_qos(hdr->frame_control) || 78124afba76SLiad Kaufman ieee80211_is_qos_nullfunc(hdr->frame_control)) { 7829794c64fSLiad Kaufman queue = iwl_mvm_find_free_queue(mvm, mvmsta->sta_id, 7839794c64fSLiad Kaufman IWL_MVM_DQA_MIN_MGMT_QUEUE, 78424afba76SLiad Kaufman IWL_MVM_DQA_MAX_MGMT_QUEUE); 78524afba76SLiad Kaufman if (queue >= IWL_MVM_DQA_MIN_MGMT_QUEUE) 78624afba76SLiad Kaufman IWL_DEBUG_TX_QUEUES(mvm, "Found free MGMT queue #%d\n", 78724afba76SLiad Kaufman queue); 78824afba76SLiad Kaufman 78924afba76SLiad Kaufman /* If no such queue is found, we'll use a DATA queue instead */ 79024afba76SLiad Kaufman } 79124afba76SLiad Kaufman 7929794c64fSLiad Kaufman if ((queue < 0 && mvmsta->reserved_queue != IEEE80211_INVAL_HW_QUEUE) && 7939794c64fSLiad Kaufman (mvm->queue_info[mvmsta->reserved_queue].status == 7949794c64fSLiad Kaufman IWL_MVM_QUEUE_RESERVED || 7959794c64fSLiad Kaufman mvm->queue_info[mvmsta->reserved_queue].status == 7969794c64fSLiad Kaufman IWL_MVM_QUEUE_INACTIVE)) { 79724afba76SLiad Kaufman queue = mvmsta->reserved_queue; 7989794c64fSLiad Kaufman mvm->queue_info[queue].reserved = true; 79924afba76SLiad Kaufman IWL_DEBUG_TX_QUEUES(mvm, "Using reserved queue #%d\n", queue); 80024afba76SLiad Kaufman } 80124afba76SLiad Kaufman 80224afba76SLiad Kaufman if (queue < 0) 8039794c64fSLiad Kaufman queue = iwl_mvm_find_free_queue(mvm, mvmsta->sta_id, 8049794c64fSLiad Kaufman IWL_MVM_DQA_MIN_DATA_QUEUE, 80524afba76SLiad Kaufman IWL_MVM_DQA_MAX_DATA_QUEUE); 806cf961e16SLiad Kaufman 807cf961e16SLiad Kaufman /* 8089794c64fSLiad Kaufman * Check if this queue is already allocated but inactive. 8099794c64fSLiad Kaufman * In such a case, we'll need to first free this queue before enabling 8109794c64fSLiad Kaufman * it again, so we'll mark it as reserved to make sure no new traffic 8119794c64fSLiad Kaufman * arrives on it 8129794c64fSLiad Kaufman */ 8139794c64fSLiad Kaufman if (queue > 0 && 8149794c64fSLiad Kaufman mvm->queue_info[queue].status == IWL_MVM_QUEUE_INACTIVE) { 8159794c64fSLiad Kaufman mvm->queue_info[queue].status = IWL_MVM_QUEUE_RESERVED; 8169794c64fSLiad Kaufman using_inactive_queue = true; 81701796ff2SSara Sharon same_sta = mvm->queue_info[queue].ra_sta_id == mvmsta->sta_id; 8189794c64fSLiad Kaufman IWL_DEBUG_TX_QUEUES(mvm, 8199794c64fSLiad Kaufman "Re-assigning TXQ %d: sta_id=%d, tid=%d\n", 8209794c64fSLiad Kaufman queue, mvmsta->sta_id, tid); 8219794c64fSLiad Kaufman } 8229794c64fSLiad Kaufman 82342db09c1SLiad Kaufman /* No free queue - we'll have to share */ 82442db09c1SLiad Kaufman if (queue <= 0) { 82542db09c1SLiad Kaufman queue = iwl_mvm_get_shared_queue(mvm, tfd_queue_mask, ac); 82642db09c1SLiad Kaufman if (queue > 0) { 82742db09c1SLiad Kaufman shared_queue = true; 82842db09c1SLiad Kaufman mvm->queue_info[queue].status = IWL_MVM_QUEUE_SHARED; 82942db09c1SLiad Kaufman } 83042db09c1SLiad Kaufman } 83142db09c1SLiad Kaufman 8329794c64fSLiad Kaufman /* 833cf961e16SLiad Kaufman * Mark TXQ as ready, even though it hasn't been fully configured yet, 834cf961e16SLiad Kaufman * to make sure no one else takes it. 835cf961e16SLiad Kaufman * This will allow avoiding re-acquiring the lock at the end of the 836cf961e16SLiad Kaufman * configuration. On error we'll mark it back as free. 837cf961e16SLiad Kaufman */ 83842db09c1SLiad Kaufman if ((queue > 0) && !shared_queue) 839cf961e16SLiad Kaufman mvm->queue_info[queue].status = IWL_MVM_QUEUE_READY; 84024afba76SLiad Kaufman 841d2515a99SLiad Kaufman spin_unlock_bh(&mvm->queue_info_lock); 84224afba76SLiad Kaufman 84342db09c1SLiad Kaufman /* This shouldn't happen - out of queues */ 84442db09c1SLiad Kaufman if (WARN_ON(queue <= 0)) { 84542db09c1SLiad Kaufman IWL_ERR(mvm, "No available queues for tid %d on sta_id %d\n", 84642db09c1SLiad Kaufman tid, cfg.sta_id); 8479f9af3d7SLiad Kaufman return queue; 84842db09c1SLiad Kaufman } 84924afba76SLiad Kaufman 85024afba76SLiad Kaufman /* 85124afba76SLiad Kaufman * Actual en/disablement of aggregations is through the ADD_STA HCMD, 85224afba76SLiad Kaufman * but for configuring the SCD to send A-MPDUs we need to mark the queue 85324afba76SLiad Kaufman * as aggregatable. 85424afba76SLiad Kaufman * Mark all DATA queues as allowing to be aggregated at some point 85524afba76SLiad Kaufman */ 856d5216a28SLiad Kaufman cfg.aggregate = (queue >= IWL_MVM_DQA_MIN_DATA_QUEUE || 857d5216a28SLiad Kaufman queue == IWL_MVM_DQA_BSS_CLIENT_QUEUE); 85824afba76SLiad Kaufman 8599794c64fSLiad Kaufman /* 8609794c64fSLiad Kaufman * If this queue was previously inactive (idle) - we need to free it 8619794c64fSLiad Kaufman * first 8629794c64fSLiad Kaufman */ 8639794c64fSLiad Kaufman if (using_inactive_queue) { 86401796ff2SSara Sharon ret = iwl_mvm_free_inactive_queue(mvm, queue, same_sta); 86501796ff2SSara Sharon if (ret) 8669794c64fSLiad Kaufman return ret; 8679794c64fSLiad Kaufman } 8688d98ae6eSLiad Kaufman 86942db09c1SLiad Kaufman IWL_DEBUG_TX_QUEUES(mvm, 87042db09c1SLiad Kaufman "Allocating %squeue #%d to sta %d on tid %d\n", 87142db09c1SLiad Kaufman shared_queue ? "shared " : "", queue, 87242db09c1SLiad Kaufman mvmsta->sta_id, tid); 87342db09c1SLiad Kaufman 87442db09c1SLiad Kaufman if (shared_queue) { 87542db09c1SLiad Kaufman /* Disable any open aggs on this queue */ 87642db09c1SLiad Kaufman disable_agg_tids = iwl_mvm_get_queue_agg_tids(mvm, queue); 87742db09c1SLiad Kaufman 87842db09c1SLiad Kaufman if (disable_agg_tids) { 87942db09c1SLiad Kaufman IWL_DEBUG_TX_QUEUES(mvm, "Disabling aggs on queue %d\n", 88042db09c1SLiad Kaufman queue); 88142db09c1SLiad Kaufman iwl_mvm_invalidate_sta_queue(mvm, queue, 88242db09c1SLiad Kaufman disable_agg_tids, false); 88342db09c1SLiad Kaufman } 88442db09c1SLiad Kaufman } 88524afba76SLiad Kaufman 88624afba76SLiad Kaufman ssn = IEEE80211_SEQ_TO_SN(le16_to_cpu(hdr->seq_ctrl)); 88724afba76SLiad Kaufman iwl_mvm_enable_txq(mvm, queue, mac_queue, ssn, &cfg, 88824afba76SLiad Kaufman wdg_timeout); 88924afba76SLiad Kaufman 89058f2cc57SLiad Kaufman /* 89158f2cc57SLiad Kaufman * Mark queue as shared in transport if shared 89258f2cc57SLiad Kaufman * Note this has to be done after queue enablement because enablement 89358f2cc57SLiad Kaufman * can also set this value, and there is no indication there to shared 89458f2cc57SLiad Kaufman * queues 89558f2cc57SLiad Kaufman */ 89658f2cc57SLiad Kaufman if (shared_queue) 89758f2cc57SLiad Kaufman iwl_trans_txq_set_shared_mode(mvm->trans, queue, true); 89858f2cc57SLiad Kaufman 89924afba76SLiad Kaufman spin_lock_bh(&mvmsta->lock); 90024afba76SLiad Kaufman mvmsta->tid_data[tid].txq_id = queue; 9019794c64fSLiad Kaufman mvmsta->tid_data[tid].is_tid_active = true; 90224afba76SLiad Kaufman mvmsta->tfd_queue_msk |= BIT(queue); 9039794c64fSLiad Kaufman queue_state = mvmsta->tid_data[tid].state; 90424afba76SLiad Kaufman 90524afba76SLiad Kaufman if (mvmsta->reserved_queue == queue) 90624afba76SLiad Kaufman mvmsta->reserved_queue = IEEE80211_INVAL_HW_QUEUE; 90724afba76SLiad Kaufman spin_unlock_bh(&mvmsta->lock); 90824afba76SLiad Kaufman 90942db09c1SLiad Kaufman if (!shared_queue) { 910cf961e16SLiad Kaufman ret = iwl_mvm_sta_send_to_fw(mvm, sta, true, STA_MODIFY_QUEUES); 911cf961e16SLiad Kaufman if (ret) 912cf961e16SLiad Kaufman goto out_err; 913cf961e16SLiad Kaufman 9149794c64fSLiad Kaufman /* If we need to re-enable aggregations... */ 91542db09c1SLiad Kaufman if (queue_state == IWL_AGG_ON) { 9169794c64fSLiad Kaufman ret = iwl_mvm_sta_tx_agg(mvm, sta, tid, queue, true); 91742db09c1SLiad Kaufman if (ret) 91842db09c1SLiad Kaufman goto out_err; 91942db09c1SLiad Kaufman } 92058f2cc57SLiad Kaufman } else { 92158f2cc57SLiad Kaufman /* Redirect queue, if needed */ 92258f2cc57SLiad Kaufman ret = iwl_mvm_scd_queue_redirect(mvm, queue, tid, ac, ssn, 92358f2cc57SLiad Kaufman wdg_timeout, false); 92458f2cc57SLiad Kaufman if (ret) 92558f2cc57SLiad Kaufman goto out_err; 92642db09c1SLiad Kaufman } 9279794c64fSLiad Kaufman 92842db09c1SLiad Kaufman return 0; 929cf961e16SLiad Kaufman 930cf961e16SLiad Kaufman out_err: 931cf961e16SLiad Kaufman iwl_mvm_disable_txq(mvm, queue, mac_queue, tid, 0); 932cf961e16SLiad Kaufman 933cf961e16SLiad Kaufman return ret; 93424afba76SLiad Kaufman } 93524afba76SLiad Kaufman 93619aefa45SLiad Kaufman static void iwl_mvm_change_queue_owner(struct iwl_mvm *mvm, int queue) 93719aefa45SLiad Kaufman { 93819aefa45SLiad Kaufman struct iwl_scd_txq_cfg_cmd cmd = { 93919aefa45SLiad Kaufman .scd_queue = queue, 94019aefa45SLiad Kaufman .action = SCD_CFG_UPDATE_QUEUE_TID, 94119aefa45SLiad Kaufman }; 94219aefa45SLiad Kaufman int tid; 94319aefa45SLiad Kaufman unsigned long tid_bitmap; 94419aefa45SLiad Kaufman int ret; 94519aefa45SLiad Kaufman 94619aefa45SLiad Kaufman lockdep_assert_held(&mvm->mutex); 94719aefa45SLiad Kaufman 948bb49701bSSara Sharon if (WARN_ON(iwl_mvm_has_new_tx_api(mvm))) 949bb49701bSSara Sharon return; 950bb49701bSSara Sharon 95119aefa45SLiad Kaufman spin_lock_bh(&mvm->queue_info_lock); 95219aefa45SLiad Kaufman tid_bitmap = mvm->queue_info[queue].tid_bitmap; 95319aefa45SLiad Kaufman spin_unlock_bh(&mvm->queue_info_lock); 95419aefa45SLiad Kaufman 95519aefa45SLiad Kaufman if (WARN(!tid_bitmap, "TXQ %d has no tids assigned to it\n", queue)) 95619aefa45SLiad Kaufman return; 95719aefa45SLiad Kaufman 95819aefa45SLiad Kaufman /* Find any TID for queue */ 95919aefa45SLiad Kaufman tid = find_first_bit(&tid_bitmap, IWL_MAX_TID_COUNT + 1); 96019aefa45SLiad Kaufman cmd.tid = tid; 96119aefa45SLiad Kaufman cmd.tx_fifo = iwl_mvm_ac_to_tx_fifo[tid_to_mac80211_ac[tid]]; 96219aefa45SLiad Kaufman 96319aefa45SLiad Kaufman ret = iwl_mvm_send_cmd_pdu(mvm, SCD_QUEUE_CFG, 0, sizeof(cmd), &cmd); 964341ca402SLiad Kaufman if (ret) { 96519aefa45SLiad Kaufman IWL_ERR(mvm, "Failed to update owner of TXQ %d (ret=%d)\n", 96619aefa45SLiad Kaufman queue, ret); 967341ca402SLiad Kaufman return; 968341ca402SLiad Kaufman } 969341ca402SLiad Kaufman 970341ca402SLiad Kaufman spin_lock_bh(&mvm->queue_info_lock); 971341ca402SLiad Kaufman mvm->queue_info[queue].txq_tid = tid; 972341ca402SLiad Kaufman spin_unlock_bh(&mvm->queue_info_lock); 97319aefa45SLiad Kaufman IWL_DEBUG_TX_QUEUES(mvm, "Changed TXQ %d ownership to tid %d\n", 97419aefa45SLiad Kaufman queue, tid); 97519aefa45SLiad Kaufman } 97619aefa45SLiad Kaufman 9779f9af3d7SLiad Kaufman static void iwl_mvm_unshare_queue(struct iwl_mvm *mvm, int queue) 9789f9af3d7SLiad Kaufman { 9799f9af3d7SLiad Kaufman struct ieee80211_sta *sta; 9809f9af3d7SLiad Kaufman struct iwl_mvm_sta *mvmsta; 9819f9af3d7SLiad Kaufman s8 sta_id; 9829f9af3d7SLiad Kaufman int tid = -1; 9839f9af3d7SLiad Kaufman unsigned long tid_bitmap; 9849f9af3d7SLiad Kaufman unsigned int wdg_timeout; 9859f9af3d7SLiad Kaufman int ssn; 9869f9af3d7SLiad Kaufman int ret = true; 9879f9af3d7SLiad Kaufman 988bb49701bSSara Sharon /* queue sharing is disabled on new TX path */ 989bb49701bSSara Sharon if (WARN_ON(iwl_mvm_has_new_tx_api(mvm))) 990bb49701bSSara Sharon return; 991bb49701bSSara Sharon 9929f9af3d7SLiad Kaufman lockdep_assert_held(&mvm->mutex); 9939f9af3d7SLiad Kaufman 9949f9af3d7SLiad Kaufman spin_lock_bh(&mvm->queue_info_lock); 9959f9af3d7SLiad Kaufman sta_id = mvm->queue_info[queue].ra_sta_id; 9969f9af3d7SLiad Kaufman tid_bitmap = mvm->queue_info[queue].tid_bitmap; 9979f9af3d7SLiad Kaufman spin_unlock_bh(&mvm->queue_info_lock); 9989f9af3d7SLiad Kaufman 9999f9af3d7SLiad Kaufman /* Find TID for queue, and make sure it is the only one on the queue */ 10009f9af3d7SLiad Kaufman tid = find_first_bit(&tid_bitmap, IWL_MAX_TID_COUNT + 1); 10019f9af3d7SLiad Kaufman if (tid_bitmap != BIT(tid)) { 10029f9af3d7SLiad Kaufman IWL_ERR(mvm, "Failed to unshare q %d, active tids=0x%lx\n", 10039f9af3d7SLiad Kaufman queue, tid_bitmap); 10049f9af3d7SLiad Kaufman return; 10059f9af3d7SLiad Kaufman } 10069f9af3d7SLiad Kaufman 10079f9af3d7SLiad Kaufman IWL_DEBUG_TX_QUEUES(mvm, "Unsharing TXQ %d, keeping tid %d\n", queue, 10089f9af3d7SLiad Kaufman tid); 10099f9af3d7SLiad Kaufman 10109f9af3d7SLiad Kaufman sta = rcu_dereference_protected(mvm->fw_id_to_mac_id[sta_id], 10119f9af3d7SLiad Kaufman lockdep_is_held(&mvm->mutex)); 10129f9af3d7SLiad Kaufman 10139f9af3d7SLiad Kaufman if (WARN_ON_ONCE(IS_ERR_OR_NULL(sta))) 10149f9af3d7SLiad Kaufman return; 10159f9af3d7SLiad Kaufman 10169f9af3d7SLiad Kaufman mvmsta = iwl_mvm_sta_from_mac80211(sta); 10179f9af3d7SLiad Kaufman wdg_timeout = iwl_mvm_get_wd_timeout(mvm, mvmsta->vif, false, false); 10189f9af3d7SLiad Kaufman 10199f9af3d7SLiad Kaufman ssn = IEEE80211_SEQ_TO_SN(mvmsta->tid_data[tid].seq_number); 10209f9af3d7SLiad Kaufman 10219f9af3d7SLiad Kaufman ret = iwl_mvm_scd_queue_redirect(mvm, queue, tid, 10229f9af3d7SLiad Kaufman tid_to_mac80211_ac[tid], ssn, 10239f9af3d7SLiad Kaufman wdg_timeout, true); 10249f9af3d7SLiad Kaufman if (ret) { 10259f9af3d7SLiad Kaufman IWL_ERR(mvm, "Failed to redirect TXQ %d\n", queue); 10269f9af3d7SLiad Kaufman return; 10279f9af3d7SLiad Kaufman } 10289f9af3d7SLiad Kaufman 10299f9af3d7SLiad Kaufman /* If aggs should be turned back on - do it */ 10309f9af3d7SLiad Kaufman if (mvmsta->tid_data[tid].state == IWL_AGG_ON) { 10319cd70e80SEmmanuel Grumbach struct iwl_mvm_add_sta_cmd cmd = {0}; 10329f9af3d7SLiad Kaufman 10339f9af3d7SLiad Kaufman mvmsta->tid_disable_agg &= ~BIT(tid); 10349f9af3d7SLiad Kaufman 10359f9af3d7SLiad Kaufman cmd.mac_id_n_color = cpu_to_le32(mvmsta->mac_id_n_color); 10369f9af3d7SLiad Kaufman cmd.sta_id = mvmsta->sta_id; 10379f9af3d7SLiad Kaufman cmd.add_modify = STA_MODE_MODIFY; 10389f9af3d7SLiad Kaufman cmd.modify_mask = STA_MODIFY_TID_DISABLE_TX; 10399f9af3d7SLiad Kaufman cmd.tfd_queue_msk = cpu_to_le32(mvmsta->tfd_queue_msk); 10409f9af3d7SLiad Kaufman cmd.tid_disable_tx = cpu_to_le16(mvmsta->tid_disable_agg); 10419f9af3d7SLiad Kaufman 10429f9af3d7SLiad Kaufman ret = iwl_mvm_send_cmd_pdu(mvm, ADD_STA, CMD_ASYNC, 10439f9af3d7SLiad Kaufman iwl_mvm_add_sta_cmd_size(mvm), &cmd); 10449f9af3d7SLiad Kaufman if (!ret) { 10459f9af3d7SLiad Kaufman IWL_DEBUG_TX_QUEUES(mvm, 10469f9af3d7SLiad Kaufman "TXQ #%d is now aggregated again\n", 10479f9af3d7SLiad Kaufman queue); 10489f9af3d7SLiad Kaufman 10499f9af3d7SLiad Kaufman /* Mark queue intenally as aggregating again */ 10509f9af3d7SLiad Kaufman iwl_trans_txq_set_shared_mode(mvm->trans, queue, false); 10519f9af3d7SLiad Kaufman } 10529f9af3d7SLiad Kaufman } 10539f9af3d7SLiad Kaufman 10549f9af3d7SLiad Kaufman spin_lock_bh(&mvm->queue_info_lock); 10559f9af3d7SLiad Kaufman mvm->queue_info[queue].status = IWL_MVM_QUEUE_READY; 10569f9af3d7SLiad Kaufman spin_unlock_bh(&mvm->queue_info_lock); 10579f9af3d7SLiad Kaufman } 10589f9af3d7SLiad Kaufman 105924afba76SLiad Kaufman static inline u8 iwl_mvm_tid_to_ac_queue(int tid) 106024afba76SLiad Kaufman { 106124afba76SLiad Kaufman if (tid == IWL_MAX_TID_COUNT) 106224afba76SLiad Kaufman return IEEE80211_AC_VO; /* MGMT */ 106324afba76SLiad Kaufman 106424afba76SLiad Kaufman return tid_to_mac80211_ac[tid]; 106524afba76SLiad Kaufman } 106624afba76SLiad Kaufman 106724afba76SLiad Kaufman static void iwl_mvm_tx_deferred_stream(struct iwl_mvm *mvm, 106824afba76SLiad Kaufman struct ieee80211_sta *sta, int tid) 106924afba76SLiad Kaufman { 107024afba76SLiad Kaufman struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta); 107124afba76SLiad Kaufman struct iwl_mvm_tid_data *tid_data = &mvmsta->tid_data[tid]; 107224afba76SLiad Kaufman struct sk_buff *skb; 107324afba76SLiad Kaufman struct ieee80211_hdr *hdr; 107424afba76SLiad Kaufman struct sk_buff_head deferred_tx; 107524afba76SLiad Kaufman u8 mac_queue; 107624afba76SLiad Kaufman bool no_queue = false; /* Marks if there is a problem with the queue */ 107724afba76SLiad Kaufman u8 ac; 107824afba76SLiad Kaufman 107924afba76SLiad Kaufman lockdep_assert_held(&mvm->mutex); 108024afba76SLiad Kaufman 108124afba76SLiad Kaufman skb = skb_peek(&tid_data->deferred_tx_frames); 108224afba76SLiad Kaufman if (!skb) 108324afba76SLiad Kaufman return; 108424afba76SLiad Kaufman hdr = (void *)skb->data; 108524afba76SLiad Kaufman 108624afba76SLiad Kaufman ac = iwl_mvm_tid_to_ac_queue(tid); 108724afba76SLiad Kaufman mac_queue = IEEE80211_SKB_CB(skb)->hw_queue; 108824afba76SLiad Kaufman 108924afba76SLiad Kaufman if (tid_data->txq_id == IEEE80211_INVAL_HW_QUEUE && 109024afba76SLiad Kaufman iwl_mvm_sta_alloc_queue(mvm, sta, ac, tid, hdr)) { 109124afba76SLiad Kaufman IWL_ERR(mvm, 109224afba76SLiad Kaufman "Can't alloc TXQ for sta %d tid %d - dropping frame\n", 109324afba76SLiad Kaufman mvmsta->sta_id, tid); 109424afba76SLiad Kaufman 109524afba76SLiad Kaufman /* 109624afba76SLiad Kaufman * Mark queue as problematic so later the deferred traffic is 109724afba76SLiad Kaufman * freed, as we can do nothing with it 109824afba76SLiad Kaufman */ 109924afba76SLiad Kaufman no_queue = true; 110024afba76SLiad Kaufman } 110124afba76SLiad Kaufman 110224afba76SLiad Kaufman __skb_queue_head_init(&deferred_tx); 110324afba76SLiad Kaufman 1104d2515a99SLiad Kaufman /* Disable bottom-halves when entering TX path */ 1105d2515a99SLiad Kaufman local_bh_disable(); 110624afba76SLiad Kaufman spin_lock(&mvmsta->lock); 110724afba76SLiad Kaufman skb_queue_splice_init(&tid_data->deferred_tx_frames, &deferred_tx); 1108ad5de737SLiad Kaufman mvmsta->deferred_traffic_tid_map &= ~BIT(tid); 110924afba76SLiad Kaufman spin_unlock(&mvmsta->lock); 111024afba76SLiad Kaufman 111124afba76SLiad Kaufman while ((skb = __skb_dequeue(&deferred_tx))) 111224afba76SLiad Kaufman if (no_queue || iwl_mvm_tx_skb(mvm, skb, sta)) 111324afba76SLiad Kaufman ieee80211_free_txskb(mvm->hw, skb); 111424afba76SLiad Kaufman local_bh_enable(); 111524afba76SLiad Kaufman 111624afba76SLiad Kaufman /* Wake queue */ 111724afba76SLiad Kaufman iwl_mvm_start_mac_queues(mvm, BIT(mac_queue)); 111824afba76SLiad Kaufman } 111924afba76SLiad Kaufman 112024afba76SLiad Kaufman void iwl_mvm_add_new_dqa_stream_wk(struct work_struct *wk) 112124afba76SLiad Kaufman { 112224afba76SLiad Kaufman struct iwl_mvm *mvm = container_of(wk, struct iwl_mvm, 112324afba76SLiad Kaufman add_stream_wk); 112424afba76SLiad Kaufman struct ieee80211_sta *sta; 112524afba76SLiad Kaufman struct iwl_mvm_sta *mvmsta; 112624afba76SLiad Kaufman unsigned long deferred_tid_traffic; 11279f9af3d7SLiad Kaufman int queue, sta_id, tid; 112824afba76SLiad Kaufman 11299794c64fSLiad Kaufman /* Check inactivity of queues */ 11309794c64fSLiad Kaufman iwl_mvm_inactivity_check(mvm); 11319794c64fSLiad Kaufman 113224afba76SLiad Kaufman mutex_lock(&mvm->mutex); 113324afba76SLiad Kaufman 11349f9af3d7SLiad Kaufman /* Reconfigure queues requiring reconfiguation */ 11359f9af3d7SLiad Kaufman for (queue = 0; queue < IWL_MAX_HW_QUEUES; queue++) { 11369f9af3d7SLiad Kaufman bool reconfig; 113719aefa45SLiad Kaufman bool change_owner; 11389f9af3d7SLiad Kaufman 11399f9af3d7SLiad Kaufman spin_lock_bh(&mvm->queue_info_lock); 11409f9af3d7SLiad Kaufman reconfig = (mvm->queue_info[queue].status == 11419f9af3d7SLiad Kaufman IWL_MVM_QUEUE_RECONFIGURING); 114219aefa45SLiad Kaufman 114319aefa45SLiad Kaufman /* 114419aefa45SLiad Kaufman * We need to take into account a situation in which a TXQ was 114519aefa45SLiad Kaufman * allocated to TID x, and then turned shared by adding TIDs y 114619aefa45SLiad Kaufman * and z. If TID x becomes inactive and is removed from the TXQ, 114719aefa45SLiad Kaufman * ownership must be given to one of the remaining TIDs. 114819aefa45SLiad Kaufman * This is mainly because if TID x continues - a new queue can't 114919aefa45SLiad Kaufman * be allocated for it as long as it is an owner of another TXQ. 115019aefa45SLiad Kaufman */ 115119aefa45SLiad Kaufman change_owner = !(mvm->queue_info[queue].tid_bitmap & 115219aefa45SLiad Kaufman BIT(mvm->queue_info[queue].txq_tid)) && 115319aefa45SLiad Kaufman (mvm->queue_info[queue].status == 115419aefa45SLiad Kaufman IWL_MVM_QUEUE_SHARED); 11559f9af3d7SLiad Kaufman spin_unlock_bh(&mvm->queue_info_lock); 11569f9af3d7SLiad Kaufman 11579f9af3d7SLiad Kaufman if (reconfig) 11589f9af3d7SLiad Kaufman iwl_mvm_unshare_queue(mvm, queue); 115919aefa45SLiad Kaufman else if (change_owner) 116019aefa45SLiad Kaufman iwl_mvm_change_queue_owner(mvm, queue); 11619f9af3d7SLiad Kaufman } 11629f9af3d7SLiad Kaufman 116324afba76SLiad Kaufman /* Go over all stations with deferred traffic */ 116424afba76SLiad Kaufman for_each_set_bit(sta_id, mvm->sta_deferred_frames, 116524afba76SLiad Kaufman IWL_MVM_STATION_COUNT) { 116624afba76SLiad Kaufman clear_bit(sta_id, mvm->sta_deferred_frames); 116724afba76SLiad Kaufman sta = rcu_dereference_protected(mvm->fw_id_to_mac_id[sta_id], 116824afba76SLiad Kaufman lockdep_is_held(&mvm->mutex)); 116924afba76SLiad Kaufman if (IS_ERR_OR_NULL(sta)) 117024afba76SLiad Kaufman continue; 117124afba76SLiad Kaufman 117224afba76SLiad Kaufman mvmsta = iwl_mvm_sta_from_mac80211(sta); 117324afba76SLiad Kaufman deferred_tid_traffic = mvmsta->deferred_traffic_tid_map; 117424afba76SLiad Kaufman 117524afba76SLiad Kaufman for_each_set_bit(tid, &deferred_tid_traffic, 117624afba76SLiad Kaufman IWL_MAX_TID_COUNT + 1) 117724afba76SLiad Kaufman iwl_mvm_tx_deferred_stream(mvm, sta, tid); 117824afba76SLiad Kaufman } 117924afba76SLiad Kaufman 118024afba76SLiad Kaufman mutex_unlock(&mvm->mutex); 118124afba76SLiad Kaufman } 118224afba76SLiad Kaufman 118324afba76SLiad Kaufman static int iwl_mvm_reserve_sta_stream(struct iwl_mvm *mvm, 1184d5216a28SLiad Kaufman struct ieee80211_sta *sta, 1185d5216a28SLiad Kaufman enum nl80211_iftype vif_type) 118624afba76SLiad Kaufman { 118724afba76SLiad Kaufman struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta); 118824afba76SLiad Kaufman int queue; 118901796ff2SSara Sharon bool using_inactive_queue = false, same_sta = false; 119024afba76SLiad Kaufman 1191396952eeSSara Sharon /* queue reserving is disabled on new TX path */ 1192396952eeSSara Sharon if (WARN_ON(iwl_mvm_has_new_tx_api(mvm))) 1193396952eeSSara Sharon return 0; 1194396952eeSSara Sharon 11959794c64fSLiad Kaufman /* 11969794c64fSLiad Kaufman * Check for inactive queues, so we don't reach a situation where we 11979794c64fSLiad Kaufman * can't add a STA due to a shortage in queues that doesn't really exist 11989794c64fSLiad Kaufman */ 11999794c64fSLiad Kaufman iwl_mvm_inactivity_check(mvm); 12009794c64fSLiad Kaufman 120124afba76SLiad Kaufman spin_lock_bh(&mvm->queue_info_lock); 120224afba76SLiad Kaufman 120324afba76SLiad Kaufman /* Make sure we have free resources for this STA */ 1204d5216a28SLiad Kaufman if (vif_type == NL80211_IFTYPE_STATION && !sta->tdls && 1205d5216a28SLiad Kaufman !mvm->queue_info[IWL_MVM_DQA_BSS_CLIENT_QUEUE].hw_queue_refcount && 1206cf961e16SLiad Kaufman (mvm->queue_info[IWL_MVM_DQA_BSS_CLIENT_QUEUE].status == 1207cf961e16SLiad Kaufman IWL_MVM_QUEUE_FREE)) 1208d5216a28SLiad Kaufman queue = IWL_MVM_DQA_BSS_CLIENT_QUEUE; 1209d5216a28SLiad Kaufman else 12109794c64fSLiad Kaufman queue = iwl_mvm_find_free_queue(mvm, mvmsta->sta_id, 12119794c64fSLiad Kaufman IWL_MVM_DQA_MIN_DATA_QUEUE, 121224afba76SLiad Kaufman IWL_MVM_DQA_MAX_DATA_QUEUE); 121324afba76SLiad Kaufman if (queue < 0) { 121424afba76SLiad Kaufman spin_unlock_bh(&mvm->queue_info_lock); 121524afba76SLiad Kaufman IWL_ERR(mvm, "No available queues for new station\n"); 121624afba76SLiad Kaufman return -ENOSPC; 121701796ff2SSara Sharon } else if (mvm->queue_info[queue].status == IWL_MVM_QUEUE_INACTIVE) { 121801796ff2SSara Sharon /* 121901796ff2SSara Sharon * If this queue is already allocated but inactive we'll need to 122001796ff2SSara Sharon * first free this queue before enabling it again, we'll mark 122101796ff2SSara Sharon * it as reserved to make sure no new traffic arrives on it 122201796ff2SSara Sharon */ 122301796ff2SSara Sharon using_inactive_queue = true; 122401796ff2SSara Sharon same_sta = mvm->queue_info[queue].ra_sta_id == mvmsta->sta_id; 122524afba76SLiad Kaufman } 1226cf961e16SLiad Kaufman mvm->queue_info[queue].status = IWL_MVM_QUEUE_RESERVED; 122724afba76SLiad Kaufman 122824afba76SLiad Kaufman spin_unlock_bh(&mvm->queue_info_lock); 122924afba76SLiad Kaufman 123024afba76SLiad Kaufman mvmsta->reserved_queue = queue; 123124afba76SLiad Kaufman 123201796ff2SSara Sharon if (using_inactive_queue) 123301796ff2SSara Sharon iwl_mvm_free_inactive_queue(mvm, queue, same_sta); 123401796ff2SSara Sharon 123524afba76SLiad Kaufman IWL_DEBUG_TX_QUEUES(mvm, "Reserving data queue #%d for sta_id %d\n", 123624afba76SLiad Kaufman queue, mvmsta->sta_id); 123724afba76SLiad Kaufman 123824afba76SLiad Kaufman return 0; 123924afba76SLiad Kaufman } 124024afba76SLiad Kaufman 12418d98ae6eSLiad Kaufman /* 12428d98ae6eSLiad Kaufman * In DQA mode, after a HW restart the queues should be allocated as before, in 12438d98ae6eSLiad Kaufman * order to avoid race conditions when there are shared queues. This function 12448d98ae6eSLiad Kaufman * does the re-mapping and queue allocation. 12458d98ae6eSLiad Kaufman * 12468d98ae6eSLiad Kaufman * Note that re-enabling aggregations isn't done in this function. 12478d98ae6eSLiad Kaufman */ 12488d98ae6eSLiad Kaufman static void iwl_mvm_realloc_queues_after_restart(struct iwl_mvm *mvm, 12498d98ae6eSLiad Kaufman struct iwl_mvm_sta *mvm_sta) 12508d98ae6eSLiad Kaufman { 12518d98ae6eSLiad Kaufman unsigned int wdg_timeout = 12528d98ae6eSLiad Kaufman iwl_mvm_get_wd_timeout(mvm, mvm_sta->vif, false, false); 12538d98ae6eSLiad Kaufman int i; 12548d98ae6eSLiad Kaufman struct iwl_trans_txq_scd_cfg cfg = { 12558d98ae6eSLiad Kaufman .sta_id = mvm_sta->sta_id, 12568d98ae6eSLiad Kaufman .frame_limit = IWL_FRAME_LIMIT, 12578d98ae6eSLiad Kaufman }; 12588d98ae6eSLiad Kaufman 125903c902bfSJohannes Berg /* Make sure reserved queue is still marked as such (if allocated) */ 126003c902bfSJohannes Berg if (mvm_sta->reserved_queue != IEEE80211_INVAL_HW_QUEUE) 12618d98ae6eSLiad Kaufman mvm->queue_info[mvm_sta->reserved_queue].status = 12628d98ae6eSLiad Kaufman IWL_MVM_QUEUE_RESERVED; 12638d98ae6eSLiad Kaufman 12648d98ae6eSLiad Kaufman for (i = 0; i <= IWL_MAX_TID_COUNT; i++) { 12658d98ae6eSLiad Kaufman struct iwl_mvm_tid_data *tid_data = &mvm_sta->tid_data[i]; 12668d98ae6eSLiad Kaufman int txq_id = tid_data->txq_id; 12678d98ae6eSLiad Kaufman int ac; 12688d98ae6eSLiad Kaufman u8 mac_queue; 12698d98ae6eSLiad Kaufman 12708d98ae6eSLiad Kaufman if (txq_id == IEEE80211_INVAL_HW_QUEUE) 12718d98ae6eSLiad Kaufman continue; 12728d98ae6eSLiad Kaufman 12738d98ae6eSLiad Kaufman skb_queue_head_init(&tid_data->deferred_tx_frames); 12748d98ae6eSLiad Kaufman 12758d98ae6eSLiad Kaufman ac = tid_to_mac80211_ac[i]; 12768d98ae6eSLiad Kaufman mac_queue = mvm_sta->vif->hw_queue[ac]; 12778d98ae6eSLiad Kaufman 1278310181ecSSara Sharon if (iwl_mvm_has_new_tx_api(mvm)) { 1279310181ecSSara Sharon IWL_DEBUG_TX_QUEUES(mvm, 1280310181ecSSara Sharon "Re-mapping sta %d tid %d\n", 1281310181ecSSara Sharon mvm_sta->sta_id, i); 1282310181ecSSara Sharon txq_id = iwl_mvm_tvqm_enable_txq(mvm, mac_queue, 1283310181ecSSara Sharon mvm_sta->sta_id, 1284310181ecSSara Sharon i, wdg_timeout); 1285310181ecSSara Sharon tid_data->txq_id = txq_id; 1286310181ecSSara Sharon } else { 1287310181ecSSara Sharon u16 seq = IEEE80211_SEQ_TO_SN(tid_data->seq_number); 1288310181ecSSara Sharon 12898d98ae6eSLiad Kaufman cfg.tid = i; 12908d98ae6eSLiad Kaufman cfg.fifo = iwl_mvm_ac_to_tx_fifo[ac]; 12918d98ae6eSLiad Kaufman cfg.aggregate = (txq_id >= IWL_MVM_DQA_MIN_DATA_QUEUE || 1292310181ecSSara Sharon txq_id == 1293310181ecSSara Sharon IWL_MVM_DQA_BSS_CLIENT_QUEUE); 12948d98ae6eSLiad Kaufman 12958d98ae6eSLiad Kaufman IWL_DEBUG_TX_QUEUES(mvm, 12968d98ae6eSLiad Kaufman "Re-mapping sta %d tid %d to queue %d\n", 12978d98ae6eSLiad Kaufman mvm_sta->sta_id, i, txq_id); 12988d98ae6eSLiad Kaufman 1299310181ecSSara Sharon iwl_mvm_enable_txq(mvm, txq_id, mac_queue, seq, &cfg, 1300310181ecSSara Sharon wdg_timeout); 1301310181ecSSara Sharon } 13028d98ae6eSLiad Kaufman 13038d98ae6eSLiad Kaufman mvm->queue_info[txq_id].status = IWL_MVM_QUEUE_READY; 13048d98ae6eSLiad Kaufman } 13058d98ae6eSLiad Kaufman 13068d98ae6eSLiad Kaufman atomic_set(&mvm->pending_frames[mvm_sta->sta_id], 0); 13078d98ae6eSLiad Kaufman } 13088d98ae6eSLiad Kaufman 1309e705c121SKalle Valo int iwl_mvm_add_sta(struct iwl_mvm *mvm, 1310e705c121SKalle Valo struct ieee80211_vif *vif, 1311e705c121SKalle Valo struct ieee80211_sta *sta) 1312e705c121SKalle Valo { 1313e705c121SKalle Valo struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 1314e705c121SKalle Valo struct iwl_mvm_sta *mvm_sta = iwl_mvm_sta_from_mac80211(sta); 1315a571f5f6SSara Sharon struct iwl_mvm_rxq_dup_data *dup_data; 1316e705c121SKalle Valo int i, ret, sta_id; 1317e705c121SKalle Valo 1318e705c121SKalle Valo lockdep_assert_held(&mvm->mutex); 1319e705c121SKalle Valo 1320e705c121SKalle Valo if (!test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status)) 1321e705c121SKalle Valo sta_id = iwl_mvm_find_free_sta_id(mvm, 1322e705c121SKalle Valo ieee80211_vif_type_p2p(vif)); 1323e705c121SKalle Valo else 1324e705c121SKalle Valo sta_id = mvm_sta->sta_id; 1325e705c121SKalle Valo 13260ae98812SSara Sharon if (sta_id == IWL_MVM_INVALID_STA) 1327e705c121SKalle Valo return -ENOSPC; 1328e705c121SKalle Valo 1329e705c121SKalle Valo spin_lock_init(&mvm_sta->lock); 1330e705c121SKalle Valo 13318d98ae6eSLiad Kaufman /* In DQA mode, if this is a HW restart, re-alloc existing queues */ 13328d98ae6eSLiad Kaufman if (iwl_mvm_is_dqa_supported(mvm) && 13338d98ae6eSLiad Kaufman test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status)) { 13348d98ae6eSLiad Kaufman iwl_mvm_realloc_queues_after_restart(mvm, mvm_sta); 13358d98ae6eSLiad Kaufman goto update_fw; 13368d98ae6eSLiad Kaufman } 13378d98ae6eSLiad Kaufman 1338e705c121SKalle Valo mvm_sta->sta_id = sta_id; 1339e705c121SKalle Valo mvm_sta->mac_id_n_color = FW_CMD_ID_AND_COLOR(mvmvif->id, 1340e705c121SKalle Valo mvmvif->color); 1341e705c121SKalle Valo mvm_sta->vif = vif; 1342e705c121SKalle Valo mvm_sta->max_agg_bufsize = LINK_QUAL_AGG_FRAME_LIMIT_DEF; 1343e705c121SKalle Valo mvm_sta->tx_protection = 0; 1344e705c121SKalle Valo mvm_sta->tt_tx_protection = false; 1345e705c121SKalle Valo 1346e705c121SKalle Valo /* HW restart, don't assume the memory has been zeroed */ 1347e705c121SKalle Valo atomic_set(&mvm->pending_frames[sta_id], 0); 1348e705c121SKalle Valo mvm_sta->tid_disable_agg = 0xffff; /* No aggs at first */ 1349e705c121SKalle Valo mvm_sta->tfd_queue_msk = 0; 1350e705c121SKalle Valo 1351e3118ad7SLiad Kaufman /* 1352e3118ad7SLiad Kaufman * Allocate new queues for a TDLS station, unless we're in DQA mode, 1353e3118ad7SLiad Kaufman * and then they'll be allocated dynamically 1354e3118ad7SLiad Kaufman */ 1355e3118ad7SLiad Kaufman if (!iwl_mvm_is_dqa_supported(mvm) && sta->tdls) { 1356e705c121SKalle Valo ret = iwl_mvm_tdls_sta_init(mvm, sta); 1357e705c121SKalle Valo if (ret) 1358e705c121SKalle Valo return ret; 135924afba76SLiad Kaufman } else if (!iwl_mvm_is_dqa_supported(mvm)) { 1360e705c121SKalle Valo for (i = 0; i < IEEE80211_NUM_ACS; i++) 1361e705c121SKalle Valo if (vif->hw_queue[i] != IEEE80211_INVAL_HW_QUEUE) 1362e705c121SKalle Valo mvm_sta->tfd_queue_msk |= BIT(vif->hw_queue[i]); 1363e705c121SKalle Valo } 1364e705c121SKalle Valo 1365e705c121SKalle Valo /* for HW restart - reset everything but the sequence number */ 136624afba76SLiad Kaufman for (i = 0; i <= IWL_MAX_TID_COUNT; i++) { 1367e705c121SKalle Valo u16 seq = mvm_sta->tid_data[i].seq_number; 1368e705c121SKalle Valo memset(&mvm_sta->tid_data[i], 0, sizeof(mvm_sta->tid_data[i])); 1369e705c121SKalle Valo mvm_sta->tid_data[i].seq_number = seq; 137024afba76SLiad Kaufman 137124afba76SLiad Kaufman if (!iwl_mvm_is_dqa_supported(mvm)) 137224afba76SLiad Kaufman continue; 137324afba76SLiad Kaufman 137424afba76SLiad Kaufman /* 137524afba76SLiad Kaufman * Mark all queues for this STA as unallocated and defer TX 137624afba76SLiad Kaufman * frames until the queue is allocated 137724afba76SLiad Kaufman */ 137824afba76SLiad Kaufman mvm_sta->tid_data[i].txq_id = IEEE80211_INVAL_HW_QUEUE; 137924afba76SLiad Kaufman skb_queue_head_init(&mvm_sta->tid_data[i].deferred_tx_frames); 1380e705c121SKalle Valo } 138124afba76SLiad Kaufman mvm_sta->deferred_traffic_tid_map = 0; 1382e705c121SKalle Valo mvm_sta->agg_tids = 0; 1383e705c121SKalle Valo 1384a571f5f6SSara Sharon if (iwl_mvm_has_new_rx_api(mvm) && 1385a571f5f6SSara Sharon !test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status)) { 1386a571f5f6SSara Sharon dup_data = kcalloc(mvm->trans->num_rx_queues, 1387a571f5f6SSara Sharon sizeof(*dup_data), 1388a571f5f6SSara Sharon GFP_KERNEL); 1389a571f5f6SSara Sharon if (!dup_data) 1390a571f5f6SSara Sharon return -ENOMEM; 1391a571f5f6SSara Sharon mvm_sta->dup_data = dup_data; 1392a571f5f6SSara Sharon } 1393a571f5f6SSara Sharon 1394396952eeSSara Sharon if (iwl_mvm_is_dqa_supported(mvm) && !iwl_mvm_has_new_tx_api(mvm)) { 1395d5216a28SLiad Kaufman ret = iwl_mvm_reserve_sta_stream(mvm, sta, 1396d5216a28SLiad Kaufman ieee80211_vif_type_p2p(vif)); 139724afba76SLiad Kaufman if (ret) 139824afba76SLiad Kaufman goto err; 139924afba76SLiad Kaufman } 140024afba76SLiad Kaufman 14018d98ae6eSLiad Kaufman update_fw: 140224afba76SLiad Kaufman ret = iwl_mvm_sta_send_to_fw(mvm, sta, false, 0); 1403e705c121SKalle Valo if (ret) 1404e705c121SKalle Valo goto err; 1405e705c121SKalle Valo 1406e705c121SKalle Valo if (vif->type == NL80211_IFTYPE_STATION) { 1407e705c121SKalle Valo if (!sta->tdls) { 14080ae98812SSara Sharon WARN_ON(mvmvif->ap_sta_id != IWL_MVM_INVALID_STA); 1409e705c121SKalle Valo mvmvif->ap_sta_id = sta_id; 1410e705c121SKalle Valo } else { 14110ae98812SSara Sharon WARN_ON(mvmvif->ap_sta_id == IWL_MVM_INVALID_STA); 1412e705c121SKalle Valo } 1413e705c121SKalle Valo } 1414e705c121SKalle Valo 1415e705c121SKalle Valo rcu_assign_pointer(mvm->fw_id_to_mac_id[sta_id], sta); 1416e705c121SKalle Valo 1417e705c121SKalle Valo return 0; 1418e705c121SKalle Valo 1419e705c121SKalle Valo err: 1420e3118ad7SLiad Kaufman if (!iwl_mvm_is_dqa_supported(mvm) && sta->tdls) 1421e705c121SKalle Valo iwl_mvm_tdls_sta_deinit(mvm, sta); 1422e705c121SKalle Valo return ret; 1423e705c121SKalle Valo } 1424e705c121SKalle Valo 1425e705c121SKalle Valo int iwl_mvm_drain_sta(struct iwl_mvm *mvm, struct iwl_mvm_sta *mvmsta, 1426e705c121SKalle Valo bool drain) 1427e705c121SKalle Valo { 1428e705c121SKalle Valo struct iwl_mvm_add_sta_cmd cmd = {}; 1429e705c121SKalle Valo int ret; 1430e705c121SKalle Valo u32 status; 1431e705c121SKalle Valo 1432e705c121SKalle Valo lockdep_assert_held(&mvm->mutex); 1433e705c121SKalle Valo 1434e705c121SKalle Valo cmd.mac_id_n_color = cpu_to_le32(mvmsta->mac_id_n_color); 1435e705c121SKalle Valo cmd.sta_id = mvmsta->sta_id; 1436e705c121SKalle Valo cmd.add_modify = STA_MODE_MODIFY; 1437e705c121SKalle Valo cmd.station_flags = drain ? cpu_to_le32(STA_FLG_DRAIN_FLOW) : 0; 1438e705c121SKalle Valo cmd.station_flags_msk = cpu_to_le32(STA_FLG_DRAIN_FLOW); 1439e705c121SKalle Valo 1440e705c121SKalle Valo status = ADD_STA_SUCCESS; 1441854c5705SSara Sharon ret = iwl_mvm_send_cmd_pdu_status(mvm, ADD_STA, 1442854c5705SSara Sharon iwl_mvm_add_sta_cmd_size(mvm), 1443e705c121SKalle Valo &cmd, &status); 1444e705c121SKalle Valo if (ret) 1445e705c121SKalle Valo return ret; 1446e705c121SKalle Valo 1447837c4da9SSara Sharon switch (status & IWL_ADD_STA_STATUS_MASK) { 1448e705c121SKalle Valo case ADD_STA_SUCCESS: 1449e705c121SKalle Valo IWL_DEBUG_INFO(mvm, "Frames for staid %d will drained in fw\n", 1450e705c121SKalle Valo mvmsta->sta_id); 1451e705c121SKalle Valo break; 1452e705c121SKalle Valo default: 1453e705c121SKalle Valo ret = -EIO; 1454e705c121SKalle Valo IWL_ERR(mvm, "Couldn't drain frames for staid %d\n", 1455e705c121SKalle Valo mvmsta->sta_id); 1456e705c121SKalle Valo break; 1457e705c121SKalle Valo } 1458e705c121SKalle Valo 1459e705c121SKalle Valo return ret; 1460e705c121SKalle Valo } 1461e705c121SKalle Valo 1462e705c121SKalle Valo /* 1463e705c121SKalle Valo * Remove a station from the FW table. Before sending the command to remove 1464e705c121SKalle Valo * the station validate that the station is indeed known to the driver (sanity 1465e705c121SKalle Valo * only). 1466e705c121SKalle Valo */ 1467e705c121SKalle Valo static int iwl_mvm_rm_sta_common(struct iwl_mvm *mvm, u8 sta_id) 1468e705c121SKalle Valo { 1469e705c121SKalle Valo struct ieee80211_sta *sta; 1470e705c121SKalle Valo struct iwl_mvm_rm_sta_cmd rm_sta_cmd = { 1471e705c121SKalle Valo .sta_id = sta_id, 1472e705c121SKalle Valo }; 1473e705c121SKalle Valo int ret; 1474e705c121SKalle Valo 1475e705c121SKalle Valo sta = rcu_dereference_protected(mvm->fw_id_to_mac_id[sta_id], 1476e705c121SKalle Valo lockdep_is_held(&mvm->mutex)); 1477e705c121SKalle Valo 1478e705c121SKalle Valo /* Note: internal stations are marked as error values */ 1479e705c121SKalle Valo if (!sta) { 1480e705c121SKalle Valo IWL_ERR(mvm, "Invalid station id\n"); 1481e705c121SKalle Valo return -EINVAL; 1482e705c121SKalle Valo } 1483e705c121SKalle Valo 1484e705c121SKalle Valo ret = iwl_mvm_send_cmd_pdu(mvm, REMOVE_STA, 0, 1485e705c121SKalle Valo sizeof(rm_sta_cmd), &rm_sta_cmd); 1486e705c121SKalle Valo if (ret) { 1487e705c121SKalle Valo IWL_ERR(mvm, "Failed to remove station. Id=%d\n", sta_id); 1488e705c121SKalle Valo return ret; 1489e705c121SKalle Valo } 1490e705c121SKalle Valo 1491e705c121SKalle Valo return 0; 1492e705c121SKalle Valo } 1493e705c121SKalle Valo 1494e705c121SKalle Valo void iwl_mvm_sta_drained_wk(struct work_struct *wk) 1495e705c121SKalle Valo { 1496e705c121SKalle Valo struct iwl_mvm *mvm = container_of(wk, struct iwl_mvm, sta_drained_wk); 1497e705c121SKalle Valo u8 sta_id; 1498e705c121SKalle Valo 1499e705c121SKalle Valo /* 1500e705c121SKalle Valo * The mutex is needed because of the SYNC cmd, but not only: if the 1501e705c121SKalle Valo * work would run concurrently with iwl_mvm_rm_sta, it would run before 1502e705c121SKalle Valo * iwl_mvm_rm_sta sets the station as busy, and exit. Then 1503e705c121SKalle Valo * iwl_mvm_rm_sta would set the station as busy, and nobody will clean 1504e705c121SKalle Valo * that later. 1505e705c121SKalle Valo */ 1506e705c121SKalle Valo mutex_lock(&mvm->mutex); 1507e705c121SKalle Valo 1508e705c121SKalle Valo for_each_set_bit(sta_id, mvm->sta_drained, IWL_MVM_STATION_COUNT) { 1509e705c121SKalle Valo int ret; 1510e705c121SKalle Valo struct ieee80211_sta *sta = 1511e705c121SKalle Valo rcu_dereference_protected(mvm->fw_id_to_mac_id[sta_id], 1512e705c121SKalle Valo lockdep_is_held(&mvm->mutex)); 1513e705c121SKalle Valo 1514e705c121SKalle Valo /* 1515e705c121SKalle Valo * This station is in use or RCU-removed; the latter happens in 1516e705c121SKalle Valo * managed mode, where mac80211 removes the station before we 1517e705c121SKalle Valo * can remove it from firmware (we can only do that after the 1518e705c121SKalle Valo * MAC is marked unassociated), and possibly while the deauth 1519e705c121SKalle Valo * frame to disconnect from the AP is still queued. Then, the 1520e705c121SKalle Valo * station pointer is -ENOENT when the last skb is reclaimed. 1521e705c121SKalle Valo */ 1522e705c121SKalle Valo if (!IS_ERR(sta) || PTR_ERR(sta) == -ENOENT) 1523e705c121SKalle Valo continue; 1524e705c121SKalle Valo 1525e705c121SKalle Valo if (PTR_ERR(sta) == -EINVAL) { 1526e705c121SKalle Valo IWL_ERR(mvm, "Drained sta %d, but it is internal?\n", 1527e705c121SKalle Valo sta_id); 1528e705c121SKalle Valo continue; 1529e705c121SKalle Valo } 1530e705c121SKalle Valo 1531e705c121SKalle Valo if (!sta) { 1532e705c121SKalle Valo IWL_ERR(mvm, "Drained sta %d, but it was NULL?\n", 1533e705c121SKalle Valo sta_id); 1534e705c121SKalle Valo continue; 1535e705c121SKalle Valo } 1536e705c121SKalle Valo 1537e705c121SKalle Valo WARN_ON(PTR_ERR(sta) != -EBUSY); 1538e705c121SKalle Valo /* This station was removed and we waited until it got drained, 1539e705c121SKalle Valo * we can now proceed and remove it. 1540e705c121SKalle Valo */ 1541e705c121SKalle Valo ret = iwl_mvm_rm_sta_common(mvm, sta_id); 1542e705c121SKalle Valo if (ret) { 1543e705c121SKalle Valo IWL_ERR(mvm, 1544e705c121SKalle Valo "Couldn't remove sta %d after it was drained\n", 1545e705c121SKalle Valo sta_id); 1546e705c121SKalle Valo continue; 1547e705c121SKalle Valo } 1548e705c121SKalle Valo RCU_INIT_POINTER(mvm->fw_id_to_mac_id[sta_id], NULL); 1549e705c121SKalle Valo clear_bit(sta_id, mvm->sta_drained); 1550e705c121SKalle Valo 1551e705c121SKalle Valo if (mvm->tfd_drained[sta_id]) { 1552e705c121SKalle Valo unsigned long i, msk = mvm->tfd_drained[sta_id]; 1553e705c121SKalle Valo 1554e705c121SKalle Valo for_each_set_bit(i, &msk, sizeof(msk) * BITS_PER_BYTE) 1555e705c121SKalle Valo iwl_mvm_disable_txq(mvm, i, i, 1556e705c121SKalle Valo IWL_MAX_TID_COUNT, 0); 1557e705c121SKalle Valo 1558e705c121SKalle Valo mvm->tfd_drained[sta_id] = 0; 1559e705c121SKalle Valo IWL_DEBUG_TDLS(mvm, "Drained sta %d, with queues %ld\n", 1560e705c121SKalle Valo sta_id, msk); 1561e705c121SKalle Valo } 1562e705c121SKalle Valo } 1563e705c121SKalle Valo 1564e705c121SKalle Valo mutex_unlock(&mvm->mutex); 1565e705c121SKalle Valo } 1566e705c121SKalle Valo 156724afba76SLiad Kaufman static void iwl_mvm_disable_sta_queues(struct iwl_mvm *mvm, 156824afba76SLiad Kaufman struct ieee80211_vif *vif, 156924afba76SLiad Kaufman struct iwl_mvm_sta *mvm_sta) 157024afba76SLiad Kaufman { 157124afba76SLiad Kaufman int ac; 157224afba76SLiad Kaufman int i; 157324afba76SLiad Kaufman 157424afba76SLiad Kaufman lockdep_assert_held(&mvm->mutex); 157524afba76SLiad Kaufman 157624afba76SLiad Kaufman for (i = 0; i < ARRAY_SIZE(mvm_sta->tid_data); i++) { 157724afba76SLiad Kaufman if (mvm_sta->tid_data[i].txq_id == IEEE80211_INVAL_HW_QUEUE) 157824afba76SLiad Kaufman continue; 157924afba76SLiad Kaufman 158024afba76SLiad Kaufman ac = iwl_mvm_tid_to_ac_queue(i); 158124afba76SLiad Kaufman iwl_mvm_disable_txq(mvm, mvm_sta->tid_data[i].txq_id, 158224afba76SLiad Kaufman vif->hw_queue[ac], i, 0); 158324afba76SLiad Kaufman mvm_sta->tid_data[i].txq_id = IEEE80211_INVAL_HW_QUEUE; 158424afba76SLiad Kaufman } 158524afba76SLiad Kaufman } 158624afba76SLiad Kaufman 1587e705c121SKalle Valo int iwl_mvm_rm_sta(struct iwl_mvm *mvm, 1588e705c121SKalle Valo struct ieee80211_vif *vif, 1589e705c121SKalle Valo struct ieee80211_sta *sta) 1590e705c121SKalle Valo { 1591e705c121SKalle Valo struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 1592e705c121SKalle Valo struct iwl_mvm_sta *mvm_sta = iwl_mvm_sta_from_mac80211(sta); 159394c3e614SSara Sharon u8 sta_id = mvm_sta->sta_id; 1594e705c121SKalle Valo int ret; 1595e705c121SKalle Valo 1596e705c121SKalle Valo lockdep_assert_held(&mvm->mutex); 1597e705c121SKalle Valo 1598a571f5f6SSara Sharon if (iwl_mvm_has_new_rx_api(mvm)) 1599a571f5f6SSara Sharon kfree(mvm_sta->dup_data); 1600a571f5f6SSara Sharon 1601a6f035a0SLiad Kaufman if ((vif->type == NL80211_IFTYPE_STATION && 160294c3e614SSara Sharon mvmvif->ap_sta_id == sta_id) || 1603a6f035a0SLiad Kaufman iwl_mvm_is_dqa_supported(mvm)){ 1604e705c121SKalle Valo ret = iwl_mvm_drain_sta(mvm, mvm_sta, true); 1605e705c121SKalle Valo if (ret) 1606e705c121SKalle Valo return ret; 1607e705c121SKalle Valo /* flush its queues here since we are freeing mvm_sta */ 1608e705c121SKalle Valo ret = iwl_mvm_flush_tx_path(mvm, mvm_sta->tfd_queue_msk, 0); 1609e705c121SKalle Valo if (ret) 1610e705c121SKalle Valo return ret; 1611e705c121SKalle Valo ret = iwl_trans_wait_tx_queue_empty(mvm->trans, 1612e705c121SKalle Valo mvm_sta->tfd_queue_msk); 1613e705c121SKalle Valo if (ret) 1614e705c121SKalle Valo return ret; 1615e705c121SKalle Valo ret = iwl_mvm_drain_sta(mvm, mvm_sta, false); 1616e705c121SKalle Valo 161724afba76SLiad Kaufman /* If DQA is supported - the queues can be disabled now */ 161894c3e614SSara Sharon if (iwl_mvm_is_dqa_supported(mvm)) { 161956214749SLiad Kaufman iwl_mvm_disable_sta_queues(mvm, vif, mvm_sta); 162094c3e614SSara Sharon /* 162194c3e614SSara Sharon * If pending_frames is set at this point - it must be 162294c3e614SSara Sharon * driver internal logic error, since queues are empty 162394c3e614SSara Sharon * and removed successuly. 162494c3e614SSara Sharon * warn on it but set it to 0 anyway to avoid station 162594c3e614SSara Sharon * not being removed later in the function 162694c3e614SSara Sharon */ 162794c3e614SSara Sharon WARN_ON(atomic_xchg(&mvm->pending_frames[sta_id], 0)); 162894c3e614SSara Sharon } 162956214749SLiad Kaufman 163056214749SLiad Kaufman /* If there is a TXQ still marked as reserved - free it */ 163156214749SLiad Kaufman if (iwl_mvm_is_dqa_supported(mvm) && 163256214749SLiad Kaufman mvm_sta->reserved_queue != IEEE80211_INVAL_HW_QUEUE) { 1633a0315deaSLiad Kaufman u8 reserved_txq = mvm_sta->reserved_queue; 1634a0315deaSLiad Kaufman enum iwl_mvm_queue_status *status; 1635a0315deaSLiad Kaufman 1636a0315deaSLiad Kaufman /* 1637a0315deaSLiad Kaufman * If no traffic has gone through the reserved TXQ - it 1638a0315deaSLiad Kaufman * is still marked as IWL_MVM_QUEUE_RESERVED, and 1639a0315deaSLiad Kaufman * should be manually marked as free again 1640a0315deaSLiad Kaufman */ 1641a0315deaSLiad Kaufman spin_lock_bh(&mvm->queue_info_lock); 1642a0315deaSLiad Kaufman status = &mvm->queue_info[reserved_txq].status; 1643a0315deaSLiad Kaufman if (WARN((*status != IWL_MVM_QUEUE_RESERVED) && 1644a0315deaSLiad Kaufman (*status != IWL_MVM_QUEUE_FREE), 1645a0315deaSLiad Kaufman "sta_id %d reserved txq %d status %d", 164694c3e614SSara Sharon sta_id, reserved_txq, *status)) { 1647a0315deaSLiad Kaufman spin_unlock_bh(&mvm->queue_info_lock); 1648a0315deaSLiad Kaufman return -EINVAL; 1649a0315deaSLiad Kaufman } 1650a0315deaSLiad Kaufman 1651a0315deaSLiad Kaufman *status = IWL_MVM_QUEUE_FREE; 1652a0315deaSLiad Kaufman spin_unlock_bh(&mvm->queue_info_lock); 1653a0315deaSLiad Kaufman } 1654a0315deaSLiad Kaufman 1655e3118ad7SLiad Kaufman if (vif->type == NL80211_IFTYPE_STATION && 165694c3e614SSara Sharon mvmvif->ap_sta_id == sta_id) { 1657e3118ad7SLiad Kaufman /* if associated - we can't remove the AP STA now */ 1658e705c121SKalle Valo if (vif->bss_conf.assoc) 1659e705c121SKalle Valo return ret; 1660e705c121SKalle Valo 1661e705c121SKalle Valo /* unassoc - go ahead - remove the AP STA now */ 16620ae98812SSara Sharon mvmvif->ap_sta_id = IWL_MVM_INVALID_STA; 1663e705c121SKalle Valo 1664e705c121SKalle Valo /* clear d0i3_ap_sta_id if no longer relevant */ 166594c3e614SSara Sharon if (mvm->d0i3_ap_sta_id == sta_id) 16660ae98812SSara Sharon mvm->d0i3_ap_sta_id = IWL_MVM_INVALID_STA; 1667e705c121SKalle Valo } 1668e3118ad7SLiad Kaufman } 1669e705c121SKalle Valo 1670e705c121SKalle Valo /* 1671e705c121SKalle Valo * This shouldn't happen - the TDLS channel switch should be canceled 1672e705c121SKalle Valo * before the STA is removed. 1673e705c121SKalle Valo */ 167494c3e614SSara Sharon if (WARN_ON_ONCE(mvm->tdls_cs.peer.sta_id == sta_id)) { 16750ae98812SSara Sharon mvm->tdls_cs.peer.sta_id = IWL_MVM_INVALID_STA; 1676e705c121SKalle Valo cancel_delayed_work(&mvm->tdls_cs.dwork); 1677e705c121SKalle Valo } 1678e705c121SKalle Valo 1679e705c121SKalle Valo /* 1680e705c121SKalle Valo * Make sure that the tx response code sees the station as -EBUSY and 1681e705c121SKalle Valo * calls the drain worker. 1682e705c121SKalle Valo */ 1683e705c121SKalle Valo spin_lock_bh(&mvm_sta->lock); 168494c3e614SSara Sharon 1685e705c121SKalle Valo /* 1686e705c121SKalle Valo * There are frames pending on the AC queues for this station. 1687e705c121SKalle Valo * We need to wait until all the frames are drained... 1688e705c121SKalle Valo */ 168994c3e614SSara Sharon if (atomic_read(&mvm->pending_frames[sta_id])) { 169094c3e614SSara Sharon rcu_assign_pointer(mvm->fw_id_to_mac_id[sta_id], 1691e705c121SKalle Valo ERR_PTR(-EBUSY)); 1692e705c121SKalle Valo spin_unlock_bh(&mvm_sta->lock); 1693e705c121SKalle Valo 1694e705c121SKalle Valo /* disable TDLS sta queues on drain complete */ 1695e705c121SKalle Valo if (sta->tdls) { 169694c3e614SSara Sharon mvm->tfd_drained[sta_id] = mvm_sta->tfd_queue_msk; 169794c3e614SSara Sharon IWL_DEBUG_TDLS(mvm, "Draining TDLS sta %d\n", sta_id); 1698e705c121SKalle Valo } 1699e705c121SKalle Valo 1700e705c121SKalle Valo ret = iwl_mvm_drain_sta(mvm, mvm_sta, true); 1701e705c121SKalle Valo } else { 1702e705c121SKalle Valo spin_unlock_bh(&mvm_sta->lock); 1703e705c121SKalle Valo 1704e3118ad7SLiad Kaufman if (!iwl_mvm_is_dqa_supported(mvm) && sta->tdls) 1705e705c121SKalle Valo iwl_mvm_tdls_sta_deinit(mvm, sta); 1706e705c121SKalle Valo 1707e705c121SKalle Valo ret = iwl_mvm_rm_sta_common(mvm, mvm_sta->sta_id); 1708e705c121SKalle Valo RCU_INIT_POINTER(mvm->fw_id_to_mac_id[mvm_sta->sta_id], NULL); 1709e705c121SKalle Valo } 1710e705c121SKalle Valo 1711e705c121SKalle Valo return ret; 1712e705c121SKalle Valo } 1713e705c121SKalle Valo 1714e705c121SKalle Valo int iwl_mvm_rm_sta_id(struct iwl_mvm *mvm, 1715e705c121SKalle Valo struct ieee80211_vif *vif, 1716e705c121SKalle Valo u8 sta_id) 1717e705c121SKalle Valo { 1718e705c121SKalle Valo int ret = iwl_mvm_rm_sta_common(mvm, sta_id); 1719e705c121SKalle Valo 1720e705c121SKalle Valo lockdep_assert_held(&mvm->mutex); 1721e705c121SKalle Valo 1722e705c121SKalle Valo RCU_INIT_POINTER(mvm->fw_id_to_mac_id[sta_id], NULL); 1723e705c121SKalle Valo return ret; 1724e705c121SKalle Valo } 1725e705c121SKalle Valo 17260e39eb03SChaya Rachel Ivgi int iwl_mvm_allocate_int_sta(struct iwl_mvm *mvm, 1727e705c121SKalle Valo struct iwl_mvm_int_sta *sta, 1728e705c121SKalle Valo u32 qmask, enum nl80211_iftype iftype) 1729e705c121SKalle Valo { 1730e705c121SKalle Valo if (!test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status)) { 1731e705c121SKalle Valo sta->sta_id = iwl_mvm_find_free_sta_id(mvm, iftype); 17320ae98812SSara Sharon if (WARN_ON_ONCE(sta->sta_id == IWL_MVM_INVALID_STA)) 1733e705c121SKalle Valo return -ENOSPC; 1734e705c121SKalle Valo } 1735e705c121SKalle Valo 1736e705c121SKalle Valo sta->tfd_queue_msk = qmask; 1737e705c121SKalle Valo 1738e705c121SKalle Valo /* put a non-NULL value so iterating over the stations won't stop */ 1739e705c121SKalle Valo rcu_assign_pointer(mvm->fw_id_to_mac_id[sta->sta_id], ERR_PTR(-EINVAL)); 1740e705c121SKalle Valo return 0; 1741e705c121SKalle Valo } 1742e705c121SKalle Valo 174326d6c16bSSara Sharon void iwl_mvm_dealloc_int_sta(struct iwl_mvm *mvm, struct iwl_mvm_int_sta *sta) 1744e705c121SKalle Valo { 1745e705c121SKalle Valo RCU_INIT_POINTER(mvm->fw_id_to_mac_id[sta->sta_id], NULL); 1746e705c121SKalle Valo memset(sta, 0, sizeof(struct iwl_mvm_int_sta)); 17470ae98812SSara Sharon sta->sta_id = IWL_MVM_INVALID_STA; 1748e705c121SKalle Valo } 1749e705c121SKalle Valo 1750e705c121SKalle Valo static int iwl_mvm_add_int_sta_common(struct iwl_mvm *mvm, 1751e705c121SKalle Valo struct iwl_mvm_int_sta *sta, 1752e705c121SKalle Valo const u8 *addr, 1753e705c121SKalle Valo u16 mac_id, u16 color) 1754e705c121SKalle Valo { 1755e705c121SKalle Valo struct iwl_mvm_add_sta_cmd cmd; 1756e705c121SKalle Valo int ret; 1757e705c121SKalle Valo u32 status; 1758e705c121SKalle Valo 1759e705c121SKalle Valo lockdep_assert_held(&mvm->mutex); 1760e705c121SKalle Valo 1761e705c121SKalle Valo memset(&cmd, 0, sizeof(cmd)); 1762e705c121SKalle Valo cmd.sta_id = sta->sta_id; 1763e705c121SKalle Valo cmd.mac_id_n_color = cpu_to_le32(FW_CMD_ID_AND_COLOR(mac_id, 1764e705c121SKalle Valo color)); 1765e705c121SKalle Valo 1766bb49701bSSara Sharon if (!iwl_mvm_has_new_tx_api(mvm)) 1767e705c121SKalle Valo cmd.tfd_queue_msk = cpu_to_le32(sta->tfd_queue_msk); 1768cf0cda19SLiad Kaufman cmd.tid_disable_tx = cpu_to_le16(0xffff); 1769e705c121SKalle Valo 1770e705c121SKalle Valo if (addr) 1771e705c121SKalle Valo memcpy(cmd.addr, addr, ETH_ALEN); 1772e705c121SKalle Valo 1773854c5705SSara Sharon ret = iwl_mvm_send_cmd_pdu_status(mvm, ADD_STA, 1774854c5705SSara Sharon iwl_mvm_add_sta_cmd_size(mvm), 1775e705c121SKalle Valo &cmd, &status); 1776e705c121SKalle Valo if (ret) 1777e705c121SKalle Valo return ret; 1778e705c121SKalle Valo 1779837c4da9SSara Sharon switch (status & IWL_ADD_STA_STATUS_MASK) { 1780e705c121SKalle Valo case ADD_STA_SUCCESS: 1781e705c121SKalle Valo IWL_DEBUG_INFO(mvm, "Internal station added.\n"); 1782e705c121SKalle Valo return 0; 1783e705c121SKalle Valo default: 1784e705c121SKalle Valo ret = -EIO; 1785e705c121SKalle Valo IWL_ERR(mvm, "Add internal station failed, status=0x%x\n", 1786e705c121SKalle Valo status); 1787e705c121SKalle Valo break; 1788e705c121SKalle Valo } 1789e705c121SKalle Valo return ret; 1790e705c121SKalle Valo } 1791e705c121SKalle Valo 1792c5a719eeSSara Sharon static void iwl_mvm_enable_aux_queue(struct iwl_mvm *mvm) 1793e705c121SKalle Valo { 1794e705c121SKalle Valo unsigned int wdg_timeout = iwlmvm_mod_params.tfd_q_hang_detect ? 1795e705c121SKalle Valo mvm->cfg->base_params->wd_timeout : 1796e705c121SKalle Valo IWL_WATCHDOG_DISABLED; 1797e705c121SKalle Valo 1798310181ecSSara Sharon if (iwl_mvm_has_new_tx_api(mvm)) { 1799310181ecSSara Sharon int queue = iwl_mvm_tvqm_enable_txq(mvm, mvm->aux_queue, 1800310181ecSSara Sharon mvm->aux_sta.sta_id, 1801310181ecSSara Sharon IWL_MAX_TID_COUNT, 1802310181ecSSara Sharon wdg_timeout); 1803310181ecSSara Sharon mvm->aux_queue = queue; 1804310181ecSSara Sharon } else if (iwl_mvm_is_dqa_supported(mvm)) { 180528d0793eSLiad Kaufman struct iwl_trans_txq_scd_cfg cfg = { 180628d0793eSLiad Kaufman .fifo = IWL_MVM_TX_FIFO_MCAST, 180728d0793eSLiad Kaufman .sta_id = mvm->aux_sta.sta_id, 180828d0793eSLiad Kaufman .tid = IWL_MAX_TID_COUNT, 180928d0793eSLiad Kaufman .aggregate = false, 181028d0793eSLiad Kaufman .frame_limit = IWL_FRAME_LIMIT, 181128d0793eSLiad Kaufman }; 181228d0793eSLiad Kaufman 181328d0793eSLiad Kaufman iwl_mvm_enable_txq(mvm, mvm->aux_queue, mvm->aux_queue, 0, &cfg, 181428d0793eSLiad Kaufman wdg_timeout); 1815c5a719eeSSara Sharon } else { 1816c5a719eeSSara Sharon iwl_mvm_enable_ac_txq(mvm, mvm->aux_queue, mvm->aux_queue, 1817c5a719eeSSara Sharon IWL_MVM_TX_FIFO_MCAST, 0, wdg_timeout); 181828d0793eSLiad Kaufman } 1819c5a719eeSSara Sharon } 1820c5a719eeSSara Sharon 1821c5a719eeSSara Sharon int iwl_mvm_add_aux_sta(struct iwl_mvm *mvm) 1822c5a719eeSSara Sharon { 1823c5a719eeSSara Sharon int ret; 1824c5a719eeSSara Sharon 1825c5a719eeSSara Sharon lockdep_assert_held(&mvm->mutex); 1826c5a719eeSSara Sharon 1827c5a719eeSSara Sharon /* Allocate aux station and assign to it the aux queue */ 1828c5a719eeSSara Sharon ret = iwl_mvm_allocate_int_sta(mvm, &mvm->aux_sta, BIT(mvm->aux_queue), 1829c5a719eeSSara Sharon NL80211_IFTYPE_UNSPECIFIED); 1830c5a719eeSSara Sharon if (ret) 1831c5a719eeSSara Sharon return ret; 1832c5a719eeSSara Sharon 1833c5a719eeSSara Sharon /* Map Aux queue to fifo - needs to happen before adding Aux station */ 1834c5a719eeSSara Sharon if (!iwl_mvm_has_new_tx_api(mvm)) 1835c5a719eeSSara Sharon iwl_mvm_enable_aux_queue(mvm); 183628d0793eSLiad Kaufman 1837e705c121SKalle Valo ret = iwl_mvm_add_int_sta_common(mvm, &mvm->aux_sta, NULL, 1838e705c121SKalle Valo MAC_INDEX_AUX, 0); 1839c5a719eeSSara Sharon if (ret) { 1840e705c121SKalle Valo iwl_mvm_dealloc_int_sta(mvm, &mvm->aux_sta); 1841e705c121SKalle Valo return ret; 1842e705c121SKalle Valo } 1843e705c121SKalle Valo 1844c5a719eeSSara Sharon /* 1845c5a719eeSSara Sharon * For a000 firmware and on we cannot add queue to a station unknown 1846c5a719eeSSara Sharon * to firmware so enable queue here - after the station was added 1847c5a719eeSSara Sharon */ 1848c5a719eeSSara Sharon if (iwl_mvm_has_new_tx_api(mvm)) 1849c5a719eeSSara Sharon iwl_mvm_enable_aux_queue(mvm); 1850c5a719eeSSara Sharon 1851c5a719eeSSara Sharon return 0; 1852c5a719eeSSara Sharon } 1853c5a719eeSSara Sharon 18540e39eb03SChaya Rachel Ivgi int iwl_mvm_add_snif_sta(struct iwl_mvm *mvm, struct ieee80211_vif *vif) 18550e39eb03SChaya Rachel Ivgi { 18560e39eb03SChaya Rachel Ivgi struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 18570e39eb03SChaya Rachel Ivgi 18580e39eb03SChaya Rachel Ivgi lockdep_assert_held(&mvm->mutex); 18590e39eb03SChaya Rachel Ivgi return iwl_mvm_add_int_sta_common(mvm, &mvm->snif_sta, vif->addr, 18600e39eb03SChaya Rachel Ivgi mvmvif->id, 0); 18610e39eb03SChaya Rachel Ivgi } 18620e39eb03SChaya Rachel Ivgi 18630e39eb03SChaya Rachel Ivgi int iwl_mvm_rm_snif_sta(struct iwl_mvm *mvm, struct ieee80211_vif *vif) 18640e39eb03SChaya Rachel Ivgi { 18650e39eb03SChaya Rachel Ivgi int ret; 18660e39eb03SChaya Rachel Ivgi 18670e39eb03SChaya Rachel Ivgi lockdep_assert_held(&mvm->mutex); 18680e39eb03SChaya Rachel Ivgi 18690e39eb03SChaya Rachel Ivgi ret = iwl_mvm_rm_sta_common(mvm, mvm->snif_sta.sta_id); 18700e39eb03SChaya Rachel Ivgi if (ret) 18710e39eb03SChaya Rachel Ivgi IWL_WARN(mvm, "Failed sending remove station\n"); 18720e39eb03SChaya Rachel Ivgi 18730e39eb03SChaya Rachel Ivgi return ret; 18740e39eb03SChaya Rachel Ivgi } 18750e39eb03SChaya Rachel Ivgi 18760e39eb03SChaya Rachel Ivgi void iwl_mvm_dealloc_snif_sta(struct iwl_mvm *mvm) 18770e39eb03SChaya Rachel Ivgi { 18780e39eb03SChaya Rachel Ivgi iwl_mvm_dealloc_int_sta(mvm, &mvm->snif_sta); 18790e39eb03SChaya Rachel Ivgi } 18800e39eb03SChaya Rachel Ivgi 1881e705c121SKalle Valo void iwl_mvm_del_aux_sta(struct iwl_mvm *mvm) 1882e705c121SKalle Valo { 1883e705c121SKalle Valo lockdep_assert_held(&mvm->mutex); 1884e705c121SKalle Valo 1885e705c121SKalle Valo iwl_mvm_dealloc_int_sta(mvm, &mvm->aux_sta); 1886e705c121SKalle Valo } 1887e705c121SKalle Valo 1888e705c121SKalle Valo /* 1889e705c121SKalle Valo * Send the add station command for the vif's broadcast station. 1890e705c121SKalle Valo * Assumes that the station was already allocated. 1891e705c121SKalle Valo * 1892e705c121SKalle Valo * @mvm: the mvm component 1893e705c121SKalle Valo * @vif: the interface to which the broadcast station is added 1894e705c121SKalle Valo * @bsta: the broadcast station to add. 1895e705c121SKalle Valo */ 1896e705c121SKalle Valo int iwl_mvm_send_add_bcast_sta(struct iwl_mvm *mvm, struct ieee80211_vif *vif) 1897e705c121SKalle Valo { 1898e705c121SKalle Valo struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 1899e705c121SKalle Valo struct iwl_mvm_int_sta *bsta = &mvmvif->bcast_sta; 1900e705c121SKalle Valo static const u8 _baddr[] = {0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF}; 1901e705c121SKalle Valo const u8 *baddr = _baddr; 19027daa7624SJohannes Berg int queue; 1903df88c08dSLiad Kaufman int ret; 1904c5a719eeSSara Sharon unsigned int wdg_timeout = 1905c5a719eeSSara Sharon iwl_mvm_get_wd_timeout(mvm, vif, false, false); 1906de24f638SLiad Kaufman struct iwl_trans_txq_scd_cfg cfg = { 1907de24f638SLiad Kaufman .fifo = IWL_MVM_TX_FIFO_VO, 1908de24f638SLiad Kaufman .sta_id = mvmvif->bcast_sta.sta_id, 1909de24f638SLiad Kaufman .tid = IWL_MAX_TID_COUNT, 1910de24f638SLiad Kaufman .aggregate = false, 1911de24f638SLiad Kaufman .frame_limit = IWL_FRAME_LIMIT, 1912de24f638SLiad Kaufman }; 1913de24f638SLiad Kaufman 1914c5a719eeSSara Sharon lockdep_assert_held(&mvm->mutex); 1915c5a719eeSSara Sharon 1916310181ecSSara Sharon if (iwl_mvm_is_dqa_supported(mvm) && !iwl_mvm_has_new_tx_api(mvm)) { 19174d339989SLiad Kaufman if (vif->type == NL80211_IFTYPE_AP || 19184d339989SLiad Kaufman vif->type == NL80211_IFTYPE_ADHOC) 191949f71713SSara Sharon queue = mvm->probe_queue; 1920df88c08dSLiad Kaufman else if (vif->type == NL80211_IFTYPE_P2P_DEVICE) 192149f71713SSara Sharon queue = mvm->p2p_dev_queue; 1922df88c08dSLiad Kaufman else if (WARN(1, "Missing required TXQ for adding bcast STA\n")) 1923de24f638SLiad Kaufman return -EINVAL; 1924de24f638SLiad Kaufman 1925df88c08dSLiad Kaufman bsta->tfd_queue_msk |= BIT(queue); 1926c5a719eeSSara Sharon 1927c5a719eeSSara Sharon iwl_mvm_enable_txq(mvm, queue, vif->hw_queue[0], 0, 1928c5a719eeSSara Sharon &cfg, wdg_timeout); 1929de24f638SLiad Kaufman } 1930de24f638SLiad Kaufman 1931e705c121SKalle Valo if (vif->type == NL80211_IFTYPE_ADHOC) 1932e705c121SKalle Valo baddr = vif->bss_conf.bssid; 1933e705c121SKalle Valo 19340ae98812SSara Sharon if (WARN_ON_ONCE(bsta->sta_id == IWL_MVM_INVALID_STA)) 1935e705c121SKalle Valo return -ENOSPC; 1936e705c121SKalle Valo 1937df88c08dSLiad Kaufman ret = iwl_mvm_add_int_sta_common(mvm, bsta, baddr, 1938e705c121SKalle Valo mvmvif->id, mvmvif->color); 1939df88c08dSLiad Kaufman if (ret) 1940df88c08dSLiad Kaufman return ret; 1941df88c08dSLiad Kaufman 1942df88c08dSLiad Kaufman /* 1943c5a719eeSSara Sharon * For a000 firmware and on we cannot add queue to a station unknown 1944c5a719eeSSara Sharon * to firmware so enable queue here - after the station was added 1945df88c08dSLiad Kaufman */ 1946310181ecSSara Sharon if (iwl_mvm_has_new_tx_api(mvm)) { 19477daa7624SJohannes Berg queue = iwl_mvm_tvqm_enable_txq(mvm, vif->hw_queue[0], 1948310181ecSSara Sharon bsta->sta_id, 1949310181ecSSara Sharon IWL_MAX_TID_COUNT, 1950c5a719eeSSara Sharon wdg_timeout); 19517daa7624SJohannes Berg 1952310181ecSSara Sharon if (vif->type == NL80211_IFTYPE_AP) 1953310181ecSSara Sharon mvm->probe_queue = queue; 1954310181ecSSara Sharon else if (vif->type == NL80211_IFTYPE_P2P_DEVICE) 1955310181ecSSara Sharon mvm->p2p_dev_queue = queue; 1956310181ecSSara Sharon 1957310181ecSSara Sharon bsta->tfd_queue_msk |= BIT(queue); 1958310181ecSSara Sharon } 1959df88c08dSLiad Kaufman 1960df88c08dSLiad Kaufman return 0; 1961df88c08dSLiad Kaufman } 1962df88c08dSLiad Kaufman 1963df88c08dSLiad Kaufman static void iwl_mvm_free_bcast_sta_queues(struct iwl_mvm *mvm, 1964df88c08dSLiad Kaufman struct ieee80211_vif *vif) 1965df88c08dSLiad Kaufman { 1966df88c08dSLiad Kaufman struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 1967df88c08dSLiad Kaufman 1968df88c08dSLiad Kaufman lockdep_assert_held(&mvm->mutex); 1969df88c08dSLiad Kaufman 19704d339989SLiad Kaufman if (vif->type == NL80211_IFTYPE_AP || 19714d339989SLiad Kaufman vif->type == NL80211_IFTYPE_ADHOC) 1972df88c08dSLiad Kaufman iwl_mvm_disable_txq(mvm, vif->cab_queue, vif->cab_queue, 1973df88c08dSLiad Kaufman IWL_MAX_TID_COUNT, 0); 1974df88c08dSLiad Kaufman 197549f71713SSara Sharon if (mvmvif->bcast_sta.tfd_queue_msk & BIT(mvm->probe_queue)) { 197649f71713SSara Sharon iwl_mvm_disable_txq(mvm, mvm->probe_queue, 1977df88c08dSLiad Kaufman vif->hw_queue[0], IWL_MAX_TID_COUNT, 1978df88c08dSLiad Kaufman 0); 197949f71713SSara Sharon mvmvif->bcast_sta.tfd_queue_msk &= ~BIT(mvm->probe_queue); 1980df88c08dSLiad Kaufman } 1981df88c08dSLiad Kaufman 198249f71713SSara Sharon if (mvmvif->bcast_sta.tfd_queue_msk & BIT(mvm->p2p_dev_queue)) { 198349f71713SSara Sharon iwl_mvm_disable_txq(mvm, mvm->p2p_dev_queue, 1984df88c08dSLiad Kaufman vif->hw_queue[0], IWL_MAX_TID_COUNT, 1985df88c08dSLiad Kaufman 0); 198649f71713SSara Sharon mvmvif->bcast_sta.tfd_queue_msk &= ~BIT(mvm->p2p_dev_queue); 1987df88c08dSLiad Kaufman } 1988e705c121SKalle Valo } 1989e705c121SKalle Valo 1990e705c121SKalle Valo /* Send the FW a request to remove the station from it's internal data 1991e705c121SKalle Valo * structures, but DO NOT remove the entry from the local data structures. */ 1992e705c121SKalle Valo int iwl_mvm_send_rm_bcast_sta(struct iwl_mvm *mvm, struct ieee80211_vif *vif) 1993e705c121SKalle Valo { 1994e705c121SKalle Valo struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 1995e705c121SKalle Valo int ret; 1996e705c121SKalle Valo 1997e705c121SKalle Valo lockdep_assert_held(&mvm->mutex); 1998e705c121SKalle Valo 1999df88c08dSLiad Kaufman if (iwl_mvm_is_dqa_supported(mvm)) 2000df88c08dSLiad Kaufman iwl_mvm_free_bcast_sta_queues(mvm, vif); 2001df88c08dSLiad Kaufman 2002e705c121SKalle Valo ret = iwl_mvm_rm_sta_common(mvm, mvmvif->bcast_sta.sta_id); 2003e705c121SKalle Valo if (ret) 2004e705c121SKalle Valo IWL_WARN(mvm, "Failed sending remove station\n"); 2005e705c121SKalle Valo return ret; 2006e705c121SKalle Valo } 2007e705c121SKalle Valo 2008e705c121SKalle Valo int iwl_mvm_alloc_bcast_sta(struct iwl_mvm *mvm, struct ieee80211_vif *vif) 2009e705c121SKalle Valo { 2010e705c121SKalle Valo struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 2011de24f638SLiad Kaufman u32 qmask = 0; 2012e705c121SKalle Valo 2013e705c121SKalle Valo lockdep_assert_held(&mvm->mutex); 2014e705c121SKalle Valo 2015df88c08dSLiad Kaufman if (!iwl_mvm_is_dqa_supported(mvm)) { 2016e705c121SKalle Valo qmask = iwl_mvm_mac_get_queues_mask(vif); 2017e705c121SKalle Valo 2018e705c121SKalle Valo /* 2019e705c121SKalle Valo * The firmware defines the TFD queue mask to only be relevant 2020e705c121SKalle Valo * for *unicast* queues, so the multicast (CAB) queue shouldn't 2021df88c08dSLiad Kaufman * be included. This only happens in NL80211_IFTYPE_AP vif type, 2022df88c08dSLiad Kaufman * so the next line will only have an effect there. 2023e705c121SKalle Valo */ 2024e705c121SKalle Valo qmask &= ~BIT(vif->cab_queue); 2025de24f638SLiad Kaufman } 2026de24f638SLiad Kaufman 2027e705c121SKalle Valo return iwl_mvm_allocate_int_sta(mvm, &mvmvif->bcast_sta, qmask, 2028e705c121SKalle Valo ieee80211_vif_type_p2p(vif)); 2029e705c121SKalle Valo } 2030e705c121SKalle Valo 2031e705c121SKalle Valo /* Allocate a new station entry for the broadcast station to the given vif, 2032e705c121SKalle Valo * and send it to the FW. 2033e705c121SKalle Valo * Note that each P2P mac should have its own broadcast station. 2034e705c121SKalle Valo * 2035e705c121SKalle Valo * @mvm: the mvm component 2036e705c121SKalle Valo * @vif: the interface to which the broadcast station is added 2037e705c121SKalle Valo * @bsta: the broadcast station to add. */ 2038e705c121SKalle Valo int iwl_mvm_add_bcast_sta(struct iwl_mvm *mvm, struct ieee80211_vif *vif) 2039e705c121SKalle Valo { 2040e705c121SKalle Valo struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 2041e705c121SKalle Valo struct iwl_mvm_int_sta *bsta = &mvmvif->bcast_sta; 2042e705c121SKalle Valo int ret; 2043e705c121SKalle Valo 2044e705c121SKalle Valo lockdep_assert_held(&mvm->mutex); 2045e705c121SKalle Valo 2046e705c121SKalle Valo ret = iwl_mvm_alloc_bcast_sta(mvm, vif); 2047e705c121SKalle Valo if (ret) 2048e705c121SKalle Valo return ret; 2049e705c121SKalle Valo 2050e705c121SKalle Valo ret = iwl_mvm_send_add_bcast_sta(mvm, vif); 2051e705c121SKalle Valo 2052e705c121SKalle Valo if (ret) 2053e705c121SKalle Valo iwl_mvm_dealloc_int_sta(mvm, bsta); 2054e705c121SKalle Valo 2055e705c121SKalle Valo return ret; 2056e705c121SKalle Valo } 2057e705c121SKalle Valo 2058e705c121SKalle Valo void iwl_mvm_dealloc_bcast_sta(struct iwl_mvm *mvm, struct ieee80211_vif *vif) 2059e705c121SKalle Valo { 2060e705c121SKalle Valo struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 2061e705c121SKalle Valo 2062e705c121SKalle Valo iwl_mvm_dealloc_int_sta(mvm, &mvmvif->bcast_sta); 2063e705c121SKalle Valo } 2064e705c121SKalle Valo 2065e705c121SKalle Valo /* 2066e705c121SKalle Valo * Send the FW a request to remove the station from it's internal data 2067e705c121SKalle Valo * structures, and in addition remove it from the local data structure. 2068e705c121SKalle Valo */ 2069e705c121SKalle Valo int iwl_mvm_rm_bcast_sta(struct iwl_mvm *mvm, struct ieee80211_vif *vif) 2070e705c121SKalle Valo { 2071e705c121SKalle Valo int ret; 2072e705c121SKalle Valo 2073e705c121SKalle Valo lockdep_assert_held(&mvm->mutex); 2074e705c121SKalle Valo 2075e705c121SKalle Valo ret = iwl_mvm_send_rm_bcast_sta(mvm, vif); 2076e705c121SKalle Valo 2077e705c121SKalle Valo iwl_mvm_dealloc_bcast_sta(mvm, vif); 2078e705c121SKalle Valo 2079e705c121SKalle Valo return ret; 2080e705c121SKalle Valo } 2081e705c121SKalle Valo 208226d6c16bSSara Sharon /* 208326d6c16bSSara Sharon * Allocate a new station entry for the multicast station to the given vif, 208426d6c16bSSara Sharon * and send it to the FW. 208526d6c16bSSara Sharon * Note that each AP/GO mac should have its own multicast station. 208626d6c16bSSara Sharon * 208726d6c16bSSara Sharon * @mvm: the mvm component 208826d6c16bSSara Sharon * @vif: the interface to which the multicast station is added 208926d6c16bSSara Sharon */ 209026d6c16bSSara Sharon int iwl_mvm_add_mcast_sta(struct iwl_mvm *mvm, struct ieee80211_vif *vif) 209126d6c16bSSara Sharon { 209226d6c16bSSara Sharon struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 209326d6c16bSSara Sharon struct iwl_mvm_int_sta *msta = &mvmvif->mcast_sta; 209426d6c16bSSara Sharon static const u8 _maddr[] = {0x03, 0x00, 0x00, 0x00, 0x00, 0x00}; 209526d6c16bSSara Sharon const u8 *maddr = _maddr; 209626d6c16bSSara Sharon struct iwl_trans_txq_scd_cfg cfg = { 209726d6c16bSSara Sharon .fifo = IWL_MVM_TX_FIFO_MCAST, 209826d6c16bSSara Sharon .sta_id = msta->sta_id, 209926d6c16bSSara Sharon .tid = IWL_MAX_TID_COUNT, 210026d6c16bSSara Sharon .aggregate = false, 210126d6c16bSSara Sharon .frame_limit = IWL_FRAME_LIMIT, 210226d6c16bSSara Sharon }; 210326d6c16bSSara Sharon unsigned int timeout = iwl_mvm_get_wd_timeout(mvm, vif, false, false); 210426d6c16bSSara Sharon int ret; 210526d6c16bSSara Sharon 210626d6c16bSSara Sharon lockdep_assert_held(&mvm->mutex); 210726d6c16bSSara Sharon 210826d6c16bSSara Sharon if (!iwl_mvm_is_dqa_supported(mvm)) 210926d6c16bSSara Sharon return 0; 211026d6c16bSSara Sharon 211126d6c16bSSara Sharon if (WARN_ON(vif->type != NL80211_IFTYPE_AP)) 211226d6c16bSSara Sharon return -ENOTSUPP; 211326d6c16bSSara Sharon 211426d6c16bSSara Sharon ret = iwl_mvm_add_int_sta_common(mvm, msta, maddr, 211526d6c16bSSara Sharon mvmvif->id, mvmvif->color); 211626d6c16bSSara Sharon if (ret) { 211726d6c16bSSara Sharon iwl_mvm_dealloc_int_sta(mvm, msta); 211826d6c16bSSara Sharon return ret; 211926d6c16bSSara Sharon } 212026d6c16bSSara Sharon 212126d6c16bSSara Sharon /* 212226d6c16bSSara Sharon * Enable cab queue after the ADD_STA command is sent. 212326d6c16bSSara Sharon * This is needed for a000 firmware which won't accept SCD_QUEUE_CFG 212426d6c16bSSara Sharon * command with unknown station id. 212526d6c16bSSara Sharon */ 2126310181ecSSara Sharon if (iwl_mvm_has_new_tx_api(mvm)) { 2127310181ecSSara Sharon int queue = iwl_mvm_tvqm_enable_txq(mvm, vif->cab_queue, 2128310181ecSSara Sharon msta->sta_id, 2129310181ecSSara Sharon IWL_MAX_TID_COUNT, 213026d6c16bSSara Sharon timeout); 2131310181ecSSara Sharon vif->cab_queue = queue; 2132310181ecSSara Sharon } else { 2133310181ecSSara Sharon iwl_mvm_enable_txq(mvm, vif->cab_queue, vif->cab_queue, 0, 2134310181ecSSara Sharon &cfg, timeout); 2135310181ecSSara Sharon } 213626d6c16bSSara Sharon 213726d6c16bSSara Sharon return 0; 213826d6c16bSSara Sharon } 213926d6c16bSSara Sharon 214026d6c16bSSara Sharon /* 214126d6c16bSSara Sharon * Send the FW a request to remove the station from it's internal data 214226d6c16bSSara Sharon * structures, and in addition remove it from the local data structure. 214326d6c16bSSara Sharon */ 214426d6c16bSSara Sharon int iwl_mvm_rm_mcast_sta(struct iwl_mvm *mvm, struct ieee80211_vif *vif) 214526d6c16bSSara Sharon { 214626d6c16bSSara Sharon struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 214726d6c16bSSara Sharon int ret; 214826d6c16bSSara Sharon 214926d6c16bSSara Sharon lockdep_assert_held(&mvm->mutex); 215026d6c16bSSara Sharon 215126d6c16bSSara Sharon if (!iwl_mvm_is_dqa_supported(mvm)) 215226d6c16bSSara Sharon return 0; 215326d6c16bSSara Sharon 215426d6c16bSSara Sharon iwl_mvm_disable_txq(mvm, vif->cab_queue, vif->cab_queue, 215526d6c16bSSara Sharon IWL_MAX_TID_COUNT, 0); 215626d6c16bSSara Sharon 215726d6c16bSSara Sharon ret = iwl_mvm_rm_sta_common(mvm, mvmvif->mcast_sta.sta_id); 215826d6c16bSSara Sharon if (ret) 215926d6c16bSSara Sharon IWL_WARN(mvm, "Failed sending remove station\n"); 216026d6c16bSSara Sharon 216126d6c16bSSara Sharon return ret; 216226d6c16bSSara Sharon } 216326d6c16bSSara Sharon 2164e705c121SKalle Valo #define IWL_MAX_RX_BA_SESSIONS 16 2165e705c121SKalle Valo 2166b915c101SSara Sharon static void iwl_mvm_sync_rxq_del_ba(struct iwl_mvm *mvm, u8 baid) 216710b2b201SSara Sharon { 2168b915c101SSara Sharon struct iwl_mvm_delba_notif notif = { 2169b915c101SSara Sharon .metadata.type = IWL_MVM_RXQ_NOTIF_DEL_BA, 2170b915c101SSara Sharon .metadata.sync = 1, 2171b915c101SSara Sharon .delba.baid = baid, 2172b915c101SSara Sharon }; 2173b915c101SSara Sharon iwl_mvm_sync_rx_queues_internal(mvm, (void *)¬if, sizeof(notif)); 217410b2b201SSara Sharon }; 217510b2b201SSara Sharon 2176b915c101SSara Sharon static void iwl_mvm_free_reorder(struct iwl_mvm *mvm, 2177b915c101SSara Sharon struct iwl_mvm_baid_data *data) 2178b915c101SSara Sharon { 2179b915c101SSara Sharon int i; 2180b915c101SSara Sharon 2181b915c101SSara Sharon iwl_mvm_sync_rxq_del_ba(mvm, data->baid); 2182b915c101SSara Sharon 2183b915c101SSara Sharon for (i = 0; i < mvm->trans->num_rx_queues; i++) { 2184b915c101SSara Sharon int j; 2185b915c101SSara Sharon struct iwl_mvm_reorder_buffer *reorder_buf = 2186b915c101SSara Sharon &data->reorder_buf[i]; 2187b915c101SSara Sharon 21880690405fSSara Sharon spin_lock_bh(&reorder_buf->lock); 21890690405fSSara Sharon if (likely(!reorder_buf->num_stored)) { 21900690405fSSara Sharon spin_unlock_bh(&reorder_buf->lock); 2191b915c101SSara Sharon continue; 21920690405fSSara Sharon } 2193b915c101SSara Sharon 2194b915c101SSara Sharon /* 2195b915c101SSara Sharon * This shouldn't happen in regular DELBA since the internal 2196b915c101SSara Sharon * delBA notification should trigger a release of all frames in 2197b915c101SSara Sharon * the reorder buffer. 2198b915c101SSara Sharon */ 2199b915c101SSara Sharon WARN_ON(1); 2200b915c101SSara Sharon 2201b915c101SSara Sharon for (j = 0; j < reorder_buf->buf_size; j++) 2202b915c101SSara Sharon __skb_queue_purge(&reorder_buf->entries[j]); 22030690405fSSara Sharon /* 22040690405fSSara Sharon * Prevent timer re-arm. This prevents a very far fetched case 22050690405fSSara Sharon * where we timed out on the notification. There may be prior 22060690405fSSara Sharon * RX frames pending in the RX queue before the notification 22070690405fSSara Sharon * that might get processed between now and the actual deletion 22080690405fSSara Sharon * and we would re-arm the timer although we are deleting the 22090690405fSSara Sharon * reorder buffer. 22100690405fSSara Sharon */ 22110690405fSSara Sharon reorder_buf->removed = true; 22120690405fSSara Sharon spin_unlock_bh(&reorder_buf->lock); 22130690405fSSara Sharon del_timer_sync(&reorder_buf->reorder_timer); 2214b915c101SSara Sharon } 2215b915c101SSara Sharon } 2216b915c101SSara Sharon 2217b915c101SSara Sharon static void iwl_mvm_init_reorder_buffer(struct iwl_mvm *mvm, 2218b915c101SSara Sharon u32 sta_id, 2219b915c101SSara Sharon struct iwl_mvm_baid_data *data, 2220b915c101SSara Sharon u16 ssn, u8 buf_size) 2221b915c101SSara Sharon { 2222b915c101SSara Sharon int i; 2223b915c101SSara Sharon 2224b915c101SSara Sharon for (i = 0; i < mvm->trans->num_rx_queues; i++) { 2225b915c101SSara Sharon struct iwl_mvm_reorder_buffer *reorder_buf = 2226b915c101SSara Sharon &data->reorder_buf[i]; 2227b915c101SSara Sharon int j; 2228b915c101SSara Sharon 2229b915c101SSara Sharon reorder_buf->num_stored = 0; 2230b915c101SSara Sharon reorder_buf->head_sn = ssn; 2231b915c101SSara Sharon reorder_buf->buf_size = buf_size; 22320690405fSSara Sharon /* rx reorder timer */ 22330690405fSSara Sharon reorder_buf->reorder_timer.function = 22340690405fSSara Sharon iwl_mvm_reorder_timer_expired; 22350690405fSSara Sharon reorder_buf->reorder_timer.data = (unsigned long)reorder_buf; 22360690405fSSara Sharon init_timer(&reorder_buf->reorder_timer); 22370690405fSSara Sharon spin_lock_init(&reorder_buf->lock); 22380690405fSSara Sharon reorder_buf->mvm = mvm; 2239b915c101SSara Sharon reorder_buf->queue = i; 2240b915c101SSara Sharon reorder_buf->sta_id = sta_id; 22415d43eab6SSara Sharon reorder_buf->valid = false; 2242b915c101SSara Sharon for (j = 0; j < reorder_buf->buf_size; j++) 2243b915c101SSara Sharon __skb_queue_head_init(&reorder_buf->entries[j]); 2244b915c101SSara Sharon } 224510b2b201SSara Sharon } 224610b2b201SSara Sharon 2247e705c121SKalle Valo int iwl_mvm_sta_rx_agg(struct iwl_mvm *mvm, struct ieee80211_sta *sta, 224810b2b201SSara Sharon int tid, u16 ssn, bool start, u8 buf_size, u16 timeout) 2249e705c121SKalle Valo { 2250e705c121SKalle Valo struct iwl_mvm_sta *mvm_sta = iwl_mvm_sta_from_mac80211(sta); 2251e705c121SKalle Valo struct iwl_mvm_add_sta_cmd cmd = {}; 225210b2b201SSara Sharon struct iwl_mvm_baid_data *baid_data = NULL; 2253e705c121SKalle Valo int ret; 2254e705c121SKalle Valo u32 status; 2255e705c121SKalle Valo 2256e705c121SKalle Valo lockdep_assert_held(&mvm->mutex); 2257e705c121SKalle Valo 2258e705c121SKalle Valo if (start && mvm->rx_ba_sessions >= IWL_MAX_RX_BA_SESSIONS) { 2259e705c121SKalle Valo IWL_WARN(mvm, "Not enough RX BA SESSIONS\n"); 2260e705c121SKalle Valo return -ENOSPC; 2261e705c121SKalle Valo } 2262e705c121SKalle Valo 226310b2b201SSara Sharon if (iwl_mvm_has_new_rx_api(mvm) && start) { 226410b2b201SSara Sharon /* 226510b2b201SSara Sharon * Allocate here so if allocation fails we can bail out early 226610b2b201SSara Sharon * before starting the BA session in the firmware 226710b2b201SSara Sharon */ 2268b915c101SSara Sharon baid_data = kzalloc(sizeof(*baid_data) + 2269b915c101SSara Sharon mvm->trans->num_rx_queues * 2270b915c101SSara Sharon sizeof(baid_data->reorder_buf[0]), 2271b915c101SSara Sharon GFP_KERNEL); 227210b2b201SSara Sharon if (!baid_data) 227310b2b201SSara Sharon return -ENOMEM; 227410b2b201SSara Sharon } 227510b2b201SSara Sharon 2276e705c121SKalle Valo cmd.mac_id_n_color = cpu_to_le32(mvm_sta->mac_id_n_color); 2277e705c121SKalle Valo cmd.sta_id = mvm_sta->sta_id; 2278e705c121SKalle Valo cmd.add_modify = STA_MODE_MODIFY; 2279e705c121SKalle Valo if (start) { 2280e705c121SKalle Valo cmd.add_immediate_ba_tid = (u8) tid; 2281e705c121SKalle Valo cmd.add_immediate_ba_ssn = cpu_to_le16(ssn); 2282854c5705SSara Sharon cmd.rx_ba_window = cpu_to_le16((u16)buf_size); 2283e705c121SKalle Valo } else { 2284e705c121SKalle Valo cmd.remove_immediate_ba_tid = (u8) tid; 2285e705c121SKalle Valo } 2286e705c121SKalle Valo cmd.modify_mask = start ? STA_MODIFY_ADD_BA_TID : 2287e705c121SKalle Valo STA_MODIFY_REMOVE_BA_TID; 2288e705c121SKalle Valo 2289e705c121SKalle Valo status = ADD_STA_SUCCESS; 2290854c5705SSara Sharon ret = iwl_mvm_send_cmd_pdu_status(mvm, ADD_STA, 2291854c5705SSara Sharon iwl_mvm_add_sta_cmd_size(mvm), 2292e705c121SKalle Valo &cmd, &status); 2293e705c121SKalle Valo if (ret) 229410b2b201SSara Sharon goto out_free; 2295e705c121SKalle Valo 2296837c4da9SSara Sharon switch (status & IWL_ADD_STA_STATUS_MASK) { 2297e705c121SKalle Valo case ADD_STA_SUCCESS: 229835263a03SSara Sharon IWL_DEBUG_HT(mvm, "RX BA Session %sed in fw\n", 2299e705c121SKalle Valo start ? "start" : "stopp"); 2300e705c121SKalle Valo break; 2301e705c121SKalle Valo case ADD_STA_IMMEDIATE_BA_FAILURE: 2302e705c121SKalle Valo IWL_WARN(mvm, "RX BA Session refused by fw\n"); 2303e705c121SKalle Valo ret = -ENOSPC; 2304e705c121SKalle Valo break; 2305e705c121SKalle Valo default: 2306e705c121SKalle Valo ret = -EIO; 2307e705c121SKalle Valo IWL_ERR(mvm, "RX BA Session failed %sing, status 0x%x\n", 2308e705c121SKalle Valo start ? "start" : "stopp", status); 2309e705c121SKalle Valo break; 2310e705c121SKalle Valo } 2311e705c121SKalle Valo 231210b2b201SSara Sharon if (ret) 231310b2b201SSara Sharon goto out_free; 231410b2b201SSara Sharon 231510b2b201SSara Sharon if (start) { 231610b2b201SSara Sharon u8 baid; 231710b2b201SSara Sharon 2318e705c121SKalle Valo mvm->rx_ba_sessions++; 231910b2b201SSara Sharon 232010b2b201SSara Sharon if (!iwl_mvm_has_new_rx_api(mvm)) 232110b2b201SSara Sharon return 0; 232210b2b201SSara Sharon 232310b2b201SSara Sharon if (WARN_ON(!(status & IWL_ADD_STA_BAID_VALID_MASK))) { 232410b2b201SSara Sharon ret = -EINVAL; 232510b2b201SSara Sharon goto out_free; 232610b2b201SSara Sharon } 232710b2b201SSara Sharon baid = (u8)((status & IWL_ADD_STA_BAID_MASK) >> 232810b2b201SSara Sharon IWL_ADD_STA_BAID_SHIFT); 232910b2b201SSara Sharon baid_data->baid = baid; 233010b2b201SSara Sharon baid_data->timeout = timeout; 233110b2b201SSara Sharon baid_data->last_rx = jiffies; 233272c240feSWei Yongjun setup_timer(&baid_data->session_timer, 233372c240feSWei Yongjun iwl_mvm_rx_agg_session_expired, 233472c240feSWei Yongjun (unsigned long)&mvm->baid_map[baid]); 233510b2b201SSara Sharon baid_data->mvm = mvm; 233610b2b201SSara Sharon baid_data->tid = tid; 233710b2b201SSara Sharon baid_data->sta_id = mvm_sta->sta_id; 233810b2b201SSara Sharon 233910b2b201SSara Sharon mvm_sta->tid_to_baid[tid] = baid; 234010b2b201SSara Sharon if (timeout) 234110b2b201SSara Sharon mod_timer(&baid_data->session_timer, 234210b2b201SSara Sharon TU_TO_EXP_TIME(timeout * 2)); 234310b2b201SSara Sharon 2344b915c101SSara Sharon iwl_mvm_init_reorder_buffer(mvm, mvm_sta->sta_id, 2345b915c101SSara Sharon baid_data, ssn, buf_size); 234610b2b201SSara Sharon /* 234710b2b201SSara Sharon * protect the BA data with RCU to cover a case where our 234810b2b201SSara Sharon * internal RX sync mechanism will timeout (not that it's 234910b2b201SSara Sharon * supposed to happen) and we will free the session data while 235010b2b201SSara Sharon * RX is being processed in parallel 235110b2b201SSara Sharon */ 235235263a03SSara Sharon IWL_DEBUG_HT(mvm, "Sta %d(%d) is assigned to BAID %d\n", 235335263a03SSara Sharon mvm_sta->sta_id, tid, baid); 235410b2b201SSara Sharon WARN_ON(rcu_access_pointer(mvm->baid_map[baid])); 235510b2b201SSara Sharon rcu_assign_pointer(mvm->baid_map[baid], baid_data); 235660dec523SSara Sharon } else { 235710b2b201SSara Sharon u8 baid = mvm_sta->tid_to_baid[tid]; 235810b2b201SSara Sharon 235960dec523SSara Sharon if (mvm->rx_ba_sessions > 0) 2360e705c121SKalle Valo /* check that restart flow didn't zero the counter */ 2361e705c121SKalle Valo mvm->rx_ba_sessions--; 236210b2b201SSara Sharon if (!iwl_mvm_has_new_rx_api(mvm)) 236310b2b201SSara Sharon return 0; 2364e705c121SKalle Valo 236510b2b201SSara Sharon if (WARN_ON(baid == IWL_RX_REORDER_DATA_INVALID_BAID)) 236610b2b201SSara Sharon return -EINVAL; 236710b2b201SSara Sharon 236810b2b201SSara Sharon baid_data = rcu_access_pointer(mvm->baid_map[baid]); 236910b2b201SSara Sharon if (WARN_ON(!baid_data)) 237010b2b201SSara Sharon return -EINVAL; 237110b2b201SSara Sharon 237210b2b201SSara Sharon /* synchronize all rx queues so we can safely delete */ 2373b915c101SSara Sharon iwl_mvm_free_reorder(mvm, baid_data); 237410b2b201SSara Sharon del_timer_sync(&baid_data->session_timer); 237510b2b201SSara Sharon RCU_INIT_POINTER(mvm->baid_map[baid], NULL); 237610b2b201SSara Sharon kfree_rcu(baid_data, rcu_head); 237735263a03SSara Sharon IWL_DEBUG_HT(mvm, "BAID %d is free\n", baid); 237810b2b201SSara Sharon } 237910b2b201SSara Sharon return 0; 238010b2b201SSara Sharon 238110b2b201SSara Sharon out_free: 238210b2b201SSara Sharon kfree(baid_data); 2383e705c121SKalle Valo return ret; 2384e705c121SKalle Valo } 2385e705c121SKalle Valo 23869794c64fSLiad Kaufman int iwl_mvm_sta_tx_agg(struct iwl_mvm *mvm, struct ieee80211_sta *sta, 2387e705c121SKalle Valo int tid, u8 queue, bool start) 2388e705c121SKalle Valo { 2389e705c121SKalle Valo struct iwl_mvm_sta *mvm_sta = iwl_mvm_sta_from_mac80211(sta); 2390e705c121SKalle Valo struct iwl_mvm_add_sta_cmd cmd = {}; 2391e705c121SKalle Valo int ret; 2392e705c121SKalle Valo u32 status; 2393e705c121SKalle Valo 2394e705c121SKalle Valo lockdep_assert_held(&mvm->mutex); 2395e705c121SKalle Valo 2396e705c121SKalle Valo if (start) { 2397e705c121SKalle Valo mvm_sta->tfd_queue_msk |= BIT(queue); 2398e705c121SKalle Valo mvm_sta->tid_disable_agg &= ~BIT(tid); 2399e705c121SKalle Valo } else { 2400cf961e16SLiad Kaufman /* In DQA-mode the queue isn't removed on agg termination */ 2401cf961e16SLiad Kaufman if (!iwl_mvm_is_dqa_supported(mvm)) 2402e705c121SKalle Valo mvm_sta->tfd_queue_msk &= ~BIT(queue); 2403e705c121SKalle Valo mvm_sta->tid_disable_agg |= BIT(tid); 2404e705c121SKalle Valo } 2405e705c121SKalle Valo 2406e705c121SKalle Valo cmd.mac_id_n_color = cpu_to_le32(mvm_sta->mac_id_n_color); 2407e705c121SKalle Valo cmd.sta_id = mvm_sta->sta_id; 2408e705c121SKalle Valo cmd.add_modify = STA_MODE_MODIFY; 2409bb49701bSSara Sharon if (!iwl_mvm_has_new_tx_api(mvm)) 2410bb49701bSSara Sharon cmd.modify_mask = STA_MODIFY_QUEUES; 2411bb49701bSSara Sharon cmd.modify_mask |= STA_MODIFY_TID_DISABLE_TX; 2412e705c121SKalle Valo cmd.tfd_queue_msk = cpu_to_le32(mvm_sta->tfd_queue_msk); 2413e705c121SKalle Valo cmd.tid_disable_tx = cpu_to_le16(mvm_sta->tid_disable_agg); 2414e705c121SKalle Valo 2415e705c121SKalle Valo status = ADD_STA_SUCCESS; 2416854c5705SSara Sharon ret = iwl_mvm_send_cmd_pdu_status(mvm, ADD_STA, 2417854c5705SSara Sharon iwl_mvm_add_sta_cmd_size(mvm), 2418e705c121SKalle Valo &cmd, &status); 2419e705c121SKalle Valo if (ret) 2420e705c121SKalle Valo return ret; 2421e705c121SKalle Valo 2422837c4da9SSara Sharon switch (status & IWL_ADD_STA_STATUS_MASK) { 2423e705c121SKalle Valo case ADD_STA_SUCCESS: 2424e705c121SKalle Valo break; 2425e705c121SKalle Valo default: 2426e705c121SKalle Valo ret = -EIO; 2427e705c121SKalle Valo IWL_ERR(mvm, "TX BA Session failed %sing, status 0x%x\n", 2428e705c121SKalle Valo start ? "start" : "stopp", status); 2429e705c121SKalle Valo break; 2430e705c121SKalle Valo } 2431e705c121SKalle Valo 2432e705c121SKalle Valo return ret; 2433e705c121SKalle Valo } 2434e705c121SKalle Valo 2435e705c121SKalle Valo const u8 tid_to_mac80211_ac[] = { 2436e705c121SKalle Valo IEEE80211_AC_BE, 2437e705c121SKalle Valo IEEE80211_AC_BK, 2438e705c121SKalle Valo IEEE80211_AC_BK, 2439e705c121SKalle Valo IEEE80211_AC_BE, 2440e705c121SKalle Valo IEEE80211_AC_VI, 2441e705c121SKalle Valo IEEE80211_AC_VI, 2442e705c121SKalle Valo IEEE80211_AC_VO, 2443e705c121SKalle Valo IEEE80211_AC_VO, 24449794c64fSLiad Kaufman IEEE80211_AC_VO, /* We treat MGMT as TID 8, which is set as AC_VO */ 2445e705c121SKalle Valo }; 2446e705c121SKalle Valo 2447e705c121SKalle Valo static const u8 tid_to_ucode_ac[] = { 2448e705c121SKalle Valo AC_BE, 2449e705c121SKalle Valo AC_BK, 2450e705c121SKalle Valo AC_BK, 2451e705c121SKalle Valo AC_BE, 2452e705c121SKalle Valo AC_VI, 2453e705c121SKalle Valo AC_VI, 2454e705c121SKalle Valo AC_VO, 2455e705c121SKalle Valo AC_VO, 2456e705c121SKalle Valo }; 2457e705c121SKalle Valo 2458e705c121SKalle Valo int iwl_mvm_sta_tx_agg_start(struct iwl_mvm *mvm, struct ieee80211_vif *vif, 2459e705c121SKalle Valo struct ieee80211_sta *sta, u16 tid, u16 *ssn) 2460e705c121SKalle Valo { 2461e705c121SKalle Valo struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta); 2462e705c121SKalle Valo struct iwl_mvm_tid_data *tid_data; 2463e705c121SKalle Valo int txq_id; 2464e705c121SKalle Valo int ret; 2465e705c121SKalle Valo 2466e705c121SKalle Valo if (WARN_ON_ONCE(tid >= IWL_MAX_TID_COUNT)) 2467e705c121SKalle Valo return -EINVAL; 2468e705c121SKalle Valo 2469e705c121SKalle Valo if (mvmsta->tid_data[tid].state != IWL_AGG_OFF) { 2470e705c121SKalle Valo IWL_ERR(mvm, "Start AGG when state is not IWL_AGG_OFF %d!\n", 2471e705c121SKalle Valo mvmsta->tid_data[tid].state); 2472e705c121SKalle Valo return -ENXIO; 2473e705c121SKalle Valo } 2474e705c121SKalle Valo 2475e705c121SKalle Valo lockdep_assert_held(&mvm->mutex); 2476e705c121SKalle Valo 2477e705c121SKalle Valo spin_lock_bh(&mvmsta->lock); 2478e705c121SKalle Valo 2479e705c121SKalle Valo /* possible race condition - we entered D0i3 while starting agg */ 2480e705c121SKalle Valo if (test_bit(IWL_MVM_STATUS_IN_D0I3, &mvm->status)) { 2481e705c121SKalle Valo spin_unlock_bh(&mvmsta->lock); 2482e705c121SKalle Valo IWL_ERR(mvm, "Entered D0i3 while starting Tx agg\n"); 2483e705c121SKalle Valo return -EIO; 2484e705c121SKalle Valo } 2485e705c121SKalle Valo 24869f9af3d7SLiad Kaufman spin_lock(&mvm->queue_info_lock); 2487e705c121SKalle Valo 2488cf961e16SLiad Kaufman /* 2489cf961e16SLiad Kaufman * Note the possible cases: 2490cf961e16SLiad Kaufman * 1. In DQA mode with an enabled TXQ - TXQ needs to become agg'ed 2491cf961e16SLiad Kaufman * 2. Non-DQA mode: the TXQ hasn't yet been enabled, so find a free 2492cf961e16SLiad Kaufman * one and mark it as reserved 2493cf961e16SLiad Kaufman * 3. In DQA mode, but no traffic yet on this TID: same treatment as in 2494cf961e16SLiad Kaufman * non-DQA mode, since the TXQ hasn't yet been allocated 2495cf961e16SLiad Kaufman */ 2496cf961e16SLiad Kaufman txq_id = mvmsta->tid_data[tid].txq_id; 24979f9af3d7SLiad Kaufman if (iwl_mvm_is_dqa_supported(mvm) && 24989f9af3d7SLiad Kaufman unlikely(mvm->queue_info[txq_id].status == IWL_MVM_QUEUE_SHARED)) { 24999f9af3d7SLiad Kaufman ret = -ENXIO; 25009f9af3d7SLiad Kaufman IWL_DEBUG_TX_QUEUES(mvm, 25019f9af3d7SLiad Kaufman "Can't start tid %d agg on shared queue!\n", 25029f9af3d7SLiad Kaufman tid); 25039f9af3d7SLiad Kaufman goto release_locks; 25049f9af3d7SLiad Kaufman } else if (!iwl_mvm_is_dqa_supported(mvm) || 2505cf961e16SLiad Kaufman mvm->queue_info[txq_id].status != IWL_MVM_QUEUE_READY) { 25069794c64fSLiad Kaufman txq_id = iwl_mvm_find_free_queue(mvm, mvmsta->sta_id, 25079794c64fSLiad Kaufman mvm->first_agg_queue, 2508e705c121SKalle Valo mvm->last_agg_queue); 2509e705c121SKalle Valo if (txq_id < 0) { 2510e705c121SKalle Valo ret = txq_id; 2511e705c121SKalle Valo IWL_ERR(mvm, "Failed to allocate agg queue\n"); 2512e705c121SKalle Valo goto release_locks; 2513e705c121SKalle Valo } 251401796ff2SSara Sharon /* 251501796ff2SSara Sharon * TXQ shouldn't be in inactive mode for non-DQA, so getting 251601796ff2SSara Sharon * an inactive queue from iwl_mvm_find_free_queue() is 251701796ff2SSara Sharon * certainly a bug 251801796ff2SSara Sharon */ 251901796ff2SSara Sharon WARN_ON(mvm->queue_info[txq_id].status == 252001796ff2SSara Sharon IWL_MVM_QUEUE_INACTIVE); 2521cf961e16SLiad Kaufman 2522cf961e16SLiad Kaufman /* TXQ hasn't yet been enabled, so mark it only as reserved */ 2523cf961e16SLiad Kaufman mvm->queue_info[txq_id].status = IWL_MVM_QUEUE_RESERVED; 2524cf961e16SLiad Kaufman } 25259f9af3d7SLiad Kaufman 25269f9af3d7SLiad Kaufman spin_unlock(&mvm->queue_info_lock); 2527e705c121SKalle Valo 2528cf961e16SLiad Kaufman IWL_DEBUG_TX_QUEUES(mvm, 2529cf961e16SLiad Kaufman "AGG for tid %d will be on queue #%d\n", 2530cf961e16SLiad Kaufman tid, txq_id); 2531cf961e16SLiad Kaufman 2532e705c121SKalle Valo tid_data = &mvmsta->tid_data[tid]; 2533e705c121SKalle Valo tid_data->ssn = IEEE80211_SEQ_TO_SN(tid_data->seq_number); 2534e705c121SKalle Valo tid_data->txq_id = txq_id; 2535e705c121SKalle Valo *ssn = tid_data->ssn; 2536e705c121SKalle Valo 2537e705c121SKalle Valo IWL_DEBUG_TX_QUEUES(mvm, 2538e705c121SKalle Valo "Start AGG: sta %d tid %d queue %d - ssn = %d, next_recl = %d\n", 2539e705c121SKalle Valo mvmsta->sta_id, tid, txq_id, tid_data->ssn, 2540e705c121SKalle Valo tid_data->next_reclaimed); 2541e705c121SKalle Valo 2542e705c121SKalle Valo if (tid_data->ssn == tid_data->next_reclaimed) { 2543e705c121SKalle Valo tid_data->state = IWL_AGG_STARTING; 2544e705c121SKalle Valo ieee80211_start_tx_ba_cb_irqsafe(vif, sta->addr, tid); 2545e705c121SKalle Valo } else { 2546e705c121SKalle Valo tid_data->state = IWL_EMPTYING_HW_QUEUE_ADDBA; 2547e705c121SKalle Valo } 2548e705c121SKalle Valo 2549e705c121SKalle Valo ret = 0; 25509f9af3d7SLiad Kaufman goto out; 2551e705c121SKalle Valo 2552e705c121SKalle Valo release_locks: 25539f9af3d7SLiad Kaufman spin_unlock(&mvm->queue_info_lock); 25549f9af3d7SLiad Kaufman out: 2555e705c121SKalle Valo spin_unlock_bh(&mvmsta->lock); 2556e705c121SKalle Valo 2557e705c121SKalle Valo return ret; 2558e705c121SKalle Valo } 2559e705c121SKalle Valo 2560e705c121SKalle Valo int iwl_mvm_sta_tx_agg_oper(struct iwl_mvm *mvm, struct ieee80211_vif *vif, 2561bb81bb68SEmmanuel Grumbach struct ieee80211_sta *sta, u16 tid, u8 buf_size, 2562bb81bb68SEmmanuel Grumbach bool amsdu) 2563e705c121SKalle Valo { 2564e705c121SKalle Valo struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta); 2565e705c121SKalle Valo struct iwl_mvm_tid_data *tid_data = &mvmsta->tid_data[tid]; 2566e705c121SKalle Valo unsigned int wdg_timeout = 2567e705c121SKalle Valo iwl_mvm_get_wd_timeout(mvm, vif, sta->tdls, false); 2568eea76c36SEmmanuel Grumbach int queue, ret; 2569cf961e16SLiad Kaufman bool alloc_queue = true; 25709f9af3d7SLiad Kaufman enum iwl_mvm_queue_status queue_status; 2571e705c121SKalle Valo u16 ssn; 2572e705c121SKalle Valo 2573eea76c36SEmmanuel Grumbach struct iwl_trans_txq_scd_cfg cfg = { 2574eea76c36SEmmanuel Grumbach .sta_id = mvmsta->sta_id, 2575eea76c36SEmmanuel Grumbach .tid = tid, 2576eea76c36SEmmanuel Grumbach .frame_limit = buf_size, 2577eea76c36SEmmanuel Grumbach .aggregate = true, 2578eea76c36SEmmanuel Grumbach }; 2579eea76c36SEmmanuel Grumbach 2580e705c121SKalle Valo BUILD_BUG_ON((sizeof(mvmsta->agg_tids) * BITS_PER_BYTE) 2581e705c121SKalle Valo != IWL_MAX_TID_COUNT); 2582e705c121SKalle Valo 2583e705c121SKalle Valo buf_size = min_t(int, buf_size, LINK_QUAL_AGG_FRAME_LIMIT_DEF); 2584e705c121SKalle Valo 2585e705c121SKalle Valo spin_lock_bh(&mvmsta->lock); 2586e705c121SKalle Valo ssn = tid_data->ssn; 2587e705c121SKalle Valo queue = tid_data->txq_id; 2588e705c121SKalle Valo tid_data->state = IWL_AGG_ON; 2589e705c121SKalle Valo mvmsta->agg_tids |= BIT(tid); 2590e705c121SKalle Valo tid_data->ssn = 0xffff; 2591bb81bb68SEmmanuel Grumbach tid_data->amsdu_in_ampdu_allowed = amsdu; 2592e705c121SKalle Valo spin_unlock_bh(&mvmsta->lock); 2593e705c121SKalle Valo 2594eea76c36SEmmanuel Grumbach cfg.fifo = iwl_mvm_ac_to_tx_fifo[tid_to_mac80211_ac[tid]]; 2595e705c121SKalle Valo 25969f9af3d7SLiad Kaufman spin_lock_bh(&mvm->queue_info_lock); 25979f9af3d7SLiad Kaufman queue_status = mvm->queue_info[queue].status; 25989f9af3d7SLiad Kaufman spin_unlock_bh(&mvm->queue_info_lock); 25999f9af3d7SLiad Kaufman 2600cf961e16SLiad Kaufman /* In DQA mode, the existing queue might need to be reconfigured */ 2601cf961e16SLiad Kaufman if (iwl_mvm_is_dqa_supported(mvm)) { 2602cf961e16SLiad Kaufman /* Maybe there is no need to even alloc a queue... */ 2603cf961e16SLiad Kaufman if (mvm->queue_info[queue].status == IWL_MVM_QUEUE_READY) 2604cf961e16SLiad Kaufman alloc_queue = false; 2605cf961e16SLiad Kaufman 2606cf961e16SLiad Kaufman /* 2607cf961e16SLiad Kaufman * Only reconfig the SCD for the queue if the window size has 2608cf961e16SLiad Kaufman * changed from current (become smaller) 2609cf961e16SLiad Kaufman */ 2610cf961e16SLiad Kaufman if (!alloc_queue && buf_size < mvmsta->max_agg_bufsize) { 2611cf961e16SLiad Kaufman /* 2612bb49701bSSara Sharon * On new TX API rs and BA manager are offloaded. 2613bb49701bSSara Sharon * For now though, just don't support being reconfigured 2614bb49701bSSara Sharon */ 2615bb49701bSSara Sharon if (iwl_mvm_has_new_tx_api(mvm)) 2616bb49701bSSara Sharon return -ENOTSUPP; 2617bb49701bSSara Sharon 2618bb49701bSSara Sharon /* 2619cf961e16SLiad Kaufman * If reconfiguring an existing queue, it first must be 2620cf961e16SLiad Kaufman * drained 2621cf961e16SLiad Kaufman */ 2622cf961e16SLiad Kaufman ret = iwl_trans_wait_tx_queue_empty(mvm->trans, 2623cf961e16SLiad Kaufman BIT(queue)); 2624cf961e16SLiad Kaufman if (ret) { 2625cf961e16SLiad Kaufman IWL_ERR(mvm, 2626cf961e16SLiad Kaufman "Error draining queue before reconfig\n"); 2627cf961e16SLiad Kaufman return ret; 2628cf961e16SLiad Kaufman } 2629cf961e16SLiad Kaufman 2630cf961e16SLiad Kaufman ret = iwl_mvm_reconfig_scd(mvm, queue, cfg.fifo, 2631cf961e16SLiad Kaufman mvmsta->sta_id, tid, 2632cf961e16SLiad Kaufman buf_size, ssn); 2633cf961e16SLiad Kaufman if (ret) { 2634cf961e16SLiad Kaufman IWL_ERR(mvm, 2635cf961e16SLiad Kaufman "Error reconfiguring TXQ #%d\n", queue); 2636cf961e16SLiad Kaufman return ret; 2637cf961e16SLiad Kaufman } 2638cf961e16SLiad Kaufman } 2639cf961e16SLiad Kaufman } 2640cf961e16SLiad Kaufman 2641cf961e16SLiad Kaufman if (alloc_queue) 2642cf961e16SLiad Kaufman iwl_mvm_enable_txq(mvm, queue, 2643cf961e16SLiad Kaufman vif->hw_queue[tid_to_mac80211_ac[tid]], ssn, 2644cf961e16SLiad Kaufman &cfg, wdg_timeout); 2645e705c121SKalle Valo 26469f9af3d7SLiad Kaufman /* Send ADD_STA command to enable aggs only if the queue isn't shared */ 26479f9af3d7SLiad Kaufman if (queue_status != IWL_MVM_QUEUE_SHARED) { 2648e705c121SKalle Valo ret = iwl_mvm_sta_tx_agg(mvm, sta, tid, queue, true); 2649e705c121SKalle Valo if (ret) 2650e705c121SKalle Valo return -EIO; 26519f9af3d7SLiad Kaufman } 2652e705c121SKalle Valo 2653e705c121SKalle Valo /* No need to mark as reserved */ 2654e705c121SKalle Valo spin_lock_bh(&mvm->queue_info_lock); 2655cf961e16SLiad Kaufman mvm->queue_info[queue].status = IWL_MVM_QUEUE_READY; 2656e705c121SKalle Valo spin_unlock_bh(&mvm->queue_info_lock); 2657e705c121SKalle Valo 2658e705c121SKalle Valo /* 2659e705c121SKalle Valo * Even though in theory the peer could have different 2660e705c121SKalle Valo * aggregation reorder buffer sizes for different sessions, 2661e705c121SKalle Valo * our ucode doesn't allow for that and has a global limit 2662e705c121SKalle Valo * for each station. Therefore, use the minimum of all the 2663e705c121SKalle Valo * aggregation sessions and our default value. 2664e705c121SKalle Valo */ 2665e705c121SKalle Valo mvmsta->max_agg_bufsize = 2666e705c121SKalle Valo min(mvmsta->max_agg_bufsize, buf_size); 2667e705c121SKalle Valo mvmsta->lq_sta.lq.agg_frame_cnt_limit = mvmsta->max_agg_bufsize; 2668e705c121SKalle Valo 2669e705c121SKalle Valo IWL_DEBUG_HT(mvm, "Tx aggregation enabled on ra = %pM tid = %d\n", 2670e705c121SKalle Valo sta->addr, tid); 2671e705c121SKalle Valo 2672e705c121SKalle Valo return iwl_mvm_send_lq_cmd(mvm, &mvmsta->lq_sta.lq, false); 2673e705c121SKalle Valo } 2674e705c121SKalle Valo 2675e705c121SKalle Valo int iwl_mvm_sta_tx_agg_stop(struct iwl_mvm *mvm, struct ieee80211_vif *vif, 2676e705c121SKalle Valo struct ieee80211_sta *sta, u16 tid) 2677e705c121SKalle Valo { 2678e705c121SKalle Valo struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta); 2679e705c121SKalle Valo struct iwl_mvm_tid_data *tid_data = &mvmsta->tid_data[tid]; 2680e705c121SKalle Valo u16 txq_id; 2681e705c121SKalle Valo int err; 2682e705c121SKalle Valo 2683e705c121SKalle Valo /* 2684e705c121SKalle Valo * If mac80211 is cleaning its state, then say that we finished since 2685e705c121SKalle Valo * our state has been cleared anyway. 2686e705c121SKalle Valo */ 2687e705c121SKalle Valo if (test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status)) { 2688e705c121SKalle Valo ieee80211_stop_tx_ba_cb_irqsafe(vif, sta->addr, tid); 2689e705c121SKalle Valo return 0; 2690e705c121SKalle Valo } 2691e705c121SKalle Valo 2692e705c121SKalle Valo spin_lock_bh(&mvmsta->lock); 2693e705c121SKalle Valo 2694e705c121SKalle Valo txq_id = tid_data->txq_id; 2695e705c121SKalle Valo 2696e705c121SKalle Valo IWL_DEBUG_TX_QUEUES(mvm, "Stop AGG: sta %d tid %d q %d state %d\n", 2697e705c121SKalle Valo mvmsta->sta_id, tid, txq_id, tid_data->state); 2698e705c121SKalle Valo 2699e705c121SKalle Valo mvmsta->agg_tids &= ~BIT(tid); 2700e705c121SKalle Valo 2701e705c121SKalle Valo spin_lock_bh(&mvm->queue_info_lock); 2702cf961e16SLiad Kaufman /* 2703cf961e16SLiad Kaufman * The TXQ is marked as reserved only if no traffic came through yet 2704cf961e16SLiad Kaufman * This means no traffic has been sent on this TID (agg'd or not), so 2705cf961e16SLiad Kaufman * we no longer have use for the queue. Since it hasn't even been 2706cf961e16SLiad Kaufman * allocated through iwl_mvm_enable_txq, so we can just mark it back as 2707cf961e16SLiad Kaufman * free. 2708cf961e16SLiad Kaufman */ 2709cf961e16SLiad Kaufman if (mvm->queue_info[txq_id].status == IWL_MVM_QUEUE_RESERVED) 2710cf961e16SLiad Kaufman mvm->queue_info[txq_id].status = IWL_MVM_QUEUE_FREE; 27119f9af3d7SLiad Kaufman 2712e705c121SKalle Valo spin_unlock_bh(&mvm->queue_info_lock); 2713e705c121SKalle Valo 2714e705c121SKalle Valo switch (tid_data->state) { 2715e705c121SKalle Valo case IWL_AGG_ON: 2716e705c121SKalle Valo tid_data->ssn = IEEE80211_SEQ_TO_SN(tid_data->seq_number); 2717e705c121SKalle Valo 2718e705c121SKalle Valo IWL_DEBUG_TX_QUEUES(mvm, 2719e705c121SKalle Valo "ssn = %d, next_recl = %d\n", 2720e705c121SKalle Valo tid_data->ssn, tid_data->next_reclaimed); 2721e705c121SKalle Valo 2722e705c121SKalle Valo /* There are still packets for this RA / TID in the HW */ 2723e705c121SKalle Valo if (tid_data->ssn != tid_data->next_reclaimed) { 2724e705c121SKalle Valo tid_data->state = IWL_EMPTYING_HW_QUEUE_DELBA; 2725e705c121SKalle Valo err = 0; 2726e705c121SKalle Valo break; 2727e705c121SKalle Valo } 2728e705c121SKalle Valo 2729e705c121SKalle Valo tid_data->ssn = 0xffff; 2730e705c121SKalle Valo tid_data->state = IWL_AGG_OFF; 2731e705c121SKalle Valo spin_unlock_bh(&mvmsta->lock); 2732e705c121SKalle Valo 2733e705c121SKalle Valo ieee80211_stop_tx_ba_cb_irqsafe(vif, sta->addr, tid); 2734e705c121SKalle Valo 2735e705c121SKalle Valo iwl_mvm_sta_tx_agg(mvm, sta, tid, txq_id, false); 2736e705c121SKalle Valo 2737cf961e16SLiad Kaufman if (!iwl_mvm_is_dqa_supported(mvm)) { 2738cf961e16SLiad Kaufman int mac_queue = vif->hw_queue[tid_to_mac80211_ac[tid]]; 2739cf961e16SLiad Kaufman 2740cf961e16SLiad Kaufman iwl_mvm_disable_txq(mvm, txq_id, mac_queue, tid, 0); 2741cf961e16SLiad Kaufman } 2742e705c121SKalle Valo return 0; 2743e705c121SKalle Valo case IWL_AGG_STARTING: 2744e705c121SKalle Valo case IWL_EMPTYING_HW_QUEUE_ADDBA: 2745e705c121SKalle Valo /* 2746e705c121SKalle Valo * The agg session has been stopped before it was set up. This 2747e705c121SKalle Valo * can happen when the AddBA timer times out for example. 2748e705c121SKalle Valo */ 2749e705c121SKalle Valo 2750e705c121SKalle Valo /* No barriers since we are under mutex */ 2751e705c121SKalle Valo lockdep_assert_held(&mvm->mutex); 2752e705c121SKalle Valo 2753e705c121SKalle Valo ieee80211_stop_tx_ba_cb_irqsafe(vif, sta->addr, tid); 2754e705c121SKalle Valo tid_data->state = IWL_AGG_OFF; 2755e705c121SKalle Valo err = 0; 2756e705c121SKalle Valo break; 2757e705c121SKalle Valo default: 2758e705c121SKalle Valo IWL_ERR(mvm, 2759e705c121SKalle Valo "Stopping AGG while state not ON or starting for %d on %d (%d)\n", 2760e705c121SKalle Valo mvmsta->sta_id, tid, tid_data->state); 2761e705c121SKalle Valo IWL_ERR(mvm, 2762e705c121SKalle Valo "\ttid_data->txq_id = %d\n", tid_data->txq_id); 2763e705c121SKalle Valo err = -EINVAL; 2764e705c121SKalle Valo } 2765e705c121SKalle Valo 2766e705c121SKalle Valo spin_unlock_bh(&mvmsta->lock); 2767e705c121SKalle Valo 2768e705c121SKalle Valo return err; 2769e705c121SKalle Valo } 2770e705c121SKalle Valo 2771e705c121SKalle Valo int iwl_mvm_sta_tx_agg_flush(struct iwl_mvm *mvm, struct ieee80211_vif *vif, 2772e705c121SKalle Valo struct ieee80211_sta *sta, u16 tid) 2773e705c121SKalle Valo { 2774e705c121SKalle Valo struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta); 2775e705c121SKalle Valo struct iwl_mvm_tid_data *tid_data = &mvmsta->tid_data[tid]; 2776e705c121SKalle Valo u16 txq_id; 2777e705c121SKalle Valo enum iwl_mvm_agg_state old_state; 2778e705c121SKalle Valo 2779e705c121SKalle Valo /* 2780e705c121SKalle Valo * First set the agg state to OFF to avoid calling 2781e705c121SKalle Valo * ieee80211_stop_tx_ba_cb in iwl_mvm_check_ratid_empty. 2782e705c121SKalle Valo */ 2783e705c121SKalle Valo spin_lock_bh(&mvmsta->lock); 2784e705c121SKalle Valo txq_id = tid_data->txq_id; 2785e705c121SKalle Valo IWL_DEBUG_TX_QUEUES(mvm, "Flush AGG: sta %d tid %d q %d state %d\n", 2786e705c121SKalle Valo mvmsta->sta_id, tid, txq_id, tid_data->state); 2787e705c121SKalle Valo old_state = tid_data->state; 2788e705c121SKalle Valo tid_data->state = IWL_AGG_OFF; 2789e705c121SKalle Valo mvmsta->agg_tids &= ~BIT(tid); 2790e705c121SKalle Valo spin_unlock_bh(&mvmsta->lock); 2791e705c121SKalle Valo 2792e705c121SKalle Valo spin_lock_bh(&mvm->queue_info_lock); 2793cf961e16SLiad Kaufman /* 2794cf961e16SLiad Kaufman * The TXQ is marked as reserved only if no traffic came through yet 2795cf961e16SLiad Kaufman * This means no traffic has been sent on this TID (agg'd or not), so 2796cf961e16SLiad Kaufman * we no longer have use for the queue. Since it hasn't even been 2797cf961e16SLiad Kaufman * allocated through iwl_mvm_enable_txq, so we can just mark it back as 2798cf961e16SLiad Kaufman * free. 2799cf961e16SLiad Kaufman */ 2800cf961e16SLiad Kaufman if (mvm->queue_info[txq_id].status == IWL_MVM_QUEUE_RESERVED) 2801cf961e16SLiad Kaufman mvm->queue_info[txq_id].status = IWL_MVM_QUEUE_FREE; 2802e705c121SKalle Valo spin_unlock_bh(&mvm->queue_info_lock); 2803e705c121SKalle Valo 2804e705c121SKalle Valo if (old_state >= IWL_AGG_ON) { 2805e705c121SKalle Valo iwl_mvm_drain_sta(mvm, mvmsta, true); 2806e705c121SKalle Valo if (iwl_mvm_flush_tx_path(mvm, BIT(txq_id), 0)) 2807e705c121SKalle Valo IWL_ERR(mvm, "Couldn't flush the AGG queue\n"); 2808e705c121SKalle Valo iwl_trans_wait_tx_queue_empty(mvm->trans, 2809e705c121SKalle Valo mvmsta->tfd_queue_msk); 2810e705c121SKalle Valo iwl_mvm_drain_sta(mvm, mvmsta, false); 2811e705c121SKalle Valo 2812e705c121SKalle Valo iwl_mvm_sta_tx_agg(mvm, sta, tid, txq_id, false); 2813e705c121SKalle Valo 2814cf961e16SLiad Kaufman if (!iwl_mvm_is_dqa_supported(mvm)) { 2815cf961e16SLiad Kaufman int mac_queue = vif->hw_queue[tid_to_mac80211_ac[tid]]; 2816cf961e16SLiad Kaufman 2817cf961e16SLiad Kaufman iwl_mvm_disable_txq(mvm, tid_data->txq_id, mac_queue, 2818cf961e16SLiad Kaufman tid, 0); 2819cf961e16SLiad Kaufman } 2820e705c121SKalle Valo } 2821e705c121SKalle Valo 2822e705c121SKalle Valo return 0; 2823e705c121SKalle Valo } 2824e705c121SKalle Valo 2825e705c121SKalle Valo static int iwl_mvm_set_fw_key_idx(struct iwl_mvm *mvm) 2826e705c121SKalle Valo { 2827e705c121SKalle Valo int i, max = -1, max_offs = -1; 2828e705c121SKalle Valo 2829e705c121SKalle Valo lockdep_assert_held(&mvm->mutex); 2830e705c121SKalle Valo 2831e705c121SKalle Valo /* Pick the unused key offset with the highest 'deleted' 2832e705c121SKalle Valo * counter. Every time a key is deleted, all the counters 2833e705c121SKalle Valo * are incremented and the one that was just deleted is 2834e705c121SKalle Valo * reset to zero. Thus, the highest counter is the one 2835e705c121SKalle Valo * that was deleted longest ago. Pick that one. 2836e705c121SKalle Valo */ 2837e705c121SKalle Valo for (i = 0; i < STA_KEY_MAX_NUM; i++) { 2838e705c121SKalle Valo if (test_bit(i, mvm->fw_key_table)) 2839e705c121SKalle Valo continue; 2840e705c121SKalle Valo if (mvm->fw_key_deleted[i] > max) { 2841e705c121SKalle Valo max = mvm->fw_key_deleted[i]; 2842e705c121SKalle Valo max_offs = i; 2843e705c121SKalle Valo } 2844e705c121SKalle Valo } 2845e705c121SKalle Valo 2846e705c121SKalle Valo if (max_offs < 0) 2847e705c121SKalle Valo return STA_KEY_IDX_INVALID; 2848e705c121SKalle Valo 2849e705c121SKalle Valo return max_offs; 2850e705c121SKalle Valo } 2851e705c121SKalle Valo 28525f7a1847SJohannes Berg static struct iwl_mvm_sta *iwl_mvm_get_key_sta(struct iwl_mvm *mvm, 28534615fd15SEmmanuel Grumbach struct ieee80211_vif *vif, 2854e705c121SKalle Valo struct ieee80211_sta *sta) 2855e705c121SKalle Valo { 2856e705c121SKalle Valo struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 2857e705c121SKalle Valo 28585f7a1847SJohannes Berg if (sta) 28595f7a1847SJohannes Berg return iwl_mvm_sta_from_mac80211(sta); 2860e705c121SKalle Valo 2861e705c121SKalle Valo /* 2862e705c121SKalle Valo * The device expects GTKs for station interfaces to be 2863e705c121SKalle Valo * installed as GTKs for the AP station. If we have no 2864e705c121SKalle Valo * station ID, then use AP's station ID. 2865e705c121SKalle Valo */ 2866e705c121SKalle Valo if (vif->type == NL80211_IFTYPE_STATION && 28670ae98812SSara Sharon mvmvif->ap_sta_id != IWL_MVM_INVALID_STA) { 28684615fd15SEmmanuel Grumbach u8 sta_id = mvmvif->ap_sta_id; 28694615fd15SEmmanuel Grumbach 28707d6a1ab6SEmmanuel Grumbach sta = rcu_dereference_check(mvm->fw_id_to_mac_id[sta_id], 28717d6a1ab6SEmmanuel Grumbach lockdep_is_held(&mvm->mutex)); 28727d6a1ab6SEmmanuel Grumbach 28734615fd15SEmmanuel Grumbach /* 28744615fd15SEmmanuel Grumbach * It is possible that the 'sta' parameter is NULL, 28754615fd15SEmmanuel Grumbach * for example when a GTK is removed - the sta_id will then 28764615fd15SEmmanuel Grumbach * be the AP ID, and no station was passed by mac80211. 28774615fd15SEmmanuel Grumbach */ 28787d6a1ab6SEmmanuel Grumbach if (IS_ERR_OR_NULL(sta)) 28797d6a1ab6SEmmanuel Grumbach return NULL; 28807d6a1ab6SEmmanuel Grumbach 28817d6a1ab6SEmmanuel Grumbach return iwl_mvm_sta_from_mac80211(sta); 28824615fd15SEmmanuel Grumbach } 2883e705c121SKalle Valo 28845f7a1847SJohannes Berg return NULL; 2885e705c121SKalle Valo } 2886e705c121SKalle Valo 2887e705c121SKalle Valo static int iwl_mvm_send_sta_key(struct iwl_mvm *mvm, 2888e705c121SKalle Valo struct iwl_mvm_sta *mvm_sta, 288945c458b4SSara Sharon struct ieee80211_key_conf *key, bool mcast, 28904615fd15SEmmanuel Grumbach u32 tkip_iv32, u16 *tkip_p1k, u32 cmd_flags, 28914615fd15SEmmanuel Grumbach u8 key_offset) 2892e705c121SKalle Valo { 289345c458b4SSara Sharon union { 289445c458b4SSara Sharon struct iwl_mvm_add_sta_key_cmd_v1 cmd_v1; 289545c458b4SSara Sharon struct iwl_mvm_add_sta_key_cmd cmd; 289645c458b4SSara Sharon } u = {}; 2897e705c121SKalle Valo __le16 key_flags; 2898e705c121SKalle Valo int ret; 2899e705c121SKalle Valo u32 status; 2900e705c121SKalle Valo u16 keyidx; 290145c458b4SSara Sharon u64 pn = 0; 290245c458b4SSara Sharon int i, size; 290345c458b4SSara Sharon bool new_api = fw_has_api(&mvm->fw->ucode_capa, 290445c458b4SSara Sharon IWL_UCODE_TLV_API_TKIP_MIC_KEYS); 2905e705c121SKalle Valo 290645c458b4SSara Sharon keyidx = (key->keyidx << STA_KEY_FLG_KEYID_POS) & 2907e705c121SKalle Valo STA_KEY_FLG_KEYID_MSK; 2908e705c121SKalle Valo key_flags = cpu_to_le16(keyidx); 2909e705c121SKalle Valo key_flags |= cpu_to_le16(STA_KEY_FLG_WEP_KEY_MAP); 2910e705c121SKalle Valo 291145c458b4SSara Sharon switch (key->cipher) { 2912e705c121SKalle Valo case WLAN_CIPHER_SUITE_TKIP: 2913e705c121SKalle Valo key_flags |= cpu_to_le16(STA_KEY_FLG_TKIP); 291445c458b4SSara Sharon if (new_api) { 291545c458b4SSara Sharon memcpy((void *)&u.cmd.tx_mic_key, 291645c458b4SSara Sharon &key->key[NL80211_TKIP_DATA_OFFSET_TX_MIC_KEY], 291745c458b4SSara Sharon IWL_MIC_KEY_SIZE); 291845c458b4SSara Sharon 291945c458b4SSara Sharon memcpy((void *)&u.cmd.rx_mic_key, 292045c458b4SSara Sharon &key->key[NL80211_TKIP_DATA_OFFSET_RX_MIC_KEY], 292145c458b4SSara Sharon IWL_MIC_KEY_SIZE); 292245c458b4SSara Sharon pn = atomic64_read(&key->tx_pn); 292345c458b4SSara Sharon 292445c458b4SSara Sharon } else { 292545c458b4SSara Sharon u.cmd_v1.tkip_rx_tsc_byte2 = tkip_iv32; 2926e705c121SKalle Valo for (i = 0; i < 5; i++) 292745c458b4SSara Sharon u.cmd_v1.tkip_rx_ttak[i] = 292845c458b4SSara Sharon cpu_to_le16(tkip_p1k[i]); 292945c458b4SSara Sharon } 293045c458b4SSara Sharon memcpy(u.cmd.common.key, key->key, key->keylen); 2931e705c121SKalle Valo break; 2932e705c121SKalle Valo case WLAN_CIPHER_SUITE_CCMP: 2933e705c121SKalle Valo key_flags |= cpu_to_le16(STA_KEY_FLG_CCM); 293445c458b4SSara Sharon memcpy(u.cmd.common.key, key->key, key->keylen); 293545c458b4SSara Sharon if (new_api) 293645c458b4SSara Sharon pn = atomic64_read(&key->tx_pn); 2937e705c121SKalle Valo break; 2938e705c121SKalle Valo case WLAN_CIPHER_SUITE_WEP104: 2939e705c121SKalle Valo key_flags |= cpu_to_le16(STA_KEY_FLG_WEP_13BYTES); 2940e705c121SKalle Valo /* fall through */ 2941e705c121SKalle Valo case WLAN_CIPHER_SUITE_WEP40: 2942e705c121SKalle Valo key_flags |= cpu_to_le16(STA_KEY_FLG_WEP); 294345c458b4SSara Sharon memcpy(u.cmd.common.key + 3, key->key, key->keylen); 2944e705c121SKalle Valo break; 29452a53d166SAyala Beker case WLAN_CIPHER_SUITE_GCMP_256: 29462a53d166SAyala Beker key_flags |= cpu_to_le16(STA_KEY_FLG_KEY_32BYTES); 29472a53d166SAyala Beker /* fall through */ 29482a53d166SAyala Beker case WLAN_CIPHER_SUITE_GCMP: 29492a53d166SAyala Beker key_flags |= cpu_to_le16(STA_KEY_FLG_GCMP); 295045c458b4SSara Sharon memcpy(u.cmd.common.key, key->key, key->keylen); 295145c458b4SSara Sharon if (new_api) 295245c458b4SSara Sharon pn = atomic64_read(&key->tx_pn); 29532a53d166SAyala Beker break; 2954e705c121SKalle Valo default: 2955e705c121SKalle Valo key_flags |= cpu_to_le16(STA_KEY_FLG_EXT); 295645c458b4SSara Sharon memcpy(u.cmd.common.key, key->key, key->keylen); 2957e705c121SKalle Valo } 2958e705c121SKalle Valo 2959e705c121SKalle Valo if (mcast) 2960e705c121SKalle Valo key_flags |= cpu_to_le16(STA_KEY_MULTICAST); 2961e705c121SKalle Valo 296245c458b4SSara Sharon u.cmd.common.key_offset = key_offset; 296345c458b4SSara Sharon u.cmd.common.key_flags = key_flags; 296445c458b4SSara Sharon u.cmd.common.sta_id = mvm_sta->sta_id; 296545c458b4SSara Sharon 296645c458b4SSara Sharon if (new_api) { 296745c458b4SSara Sharon u.cmd.transmit_seq_cnt = cpu_to_le64(pn); 296845c458b4SSara Sharon size = sizeof(u.cmd); 296945c458b4SSara Sharon } else { 297045c458b4SSara Sharon size = sizeof(u.cmd_v1); 297145c458b4SSara Sharon } 2972e705c121SKalle Valo 2973e705c121SKalle Valo status = ADD_STA_SUCCESS; 2974e705c121SKalle Valo if (cmd_flags & CMD_ASYNC) 297545c458b4SSara Sharon ret = iwl_mvm_send_cmd_pdu(mvm, ADD_STA_KEY, CMD_ASYNC, size, 297645c458b4SSara Sharon &u.cmd); 2977e705c121SKalle Valo else 297845c458b4SSara Sharon ret = iwl_mvm_send_cmd_pdu_status(mvm, ADD_STA_KEY, size, 297945c458b4SSara Sharon &u.cmd, &status); 2980e705c121SKalle Valo 2981e705c121SKalle Valo switch (status) { 2982e705c121SKalle Valo case ADD_STA_SUCCESS: 2983e705c121SKalle Valo IWL_DEBUG_WEP(mvm, "MODIFY_STA: set dynamic key passed\n"); 2984e705c121SKalle Valo break; 2985e705c121SKalle Valo default: 2986e705c121SKalle Valo ret = -EIO; 2987e705c121SKalle Valo IWL_ERR(mvm, "MODIFY_STA: set dynamic key failed\n"); 2988e705c121SKalle Valo break; 2989e705c121SKalle Valo } 2990e705c121SKalle Valo 2991e705c121SKalle Valo return ret; 2992e705c121SKalle Valo } 2993e705c121SKalle Valo 2994e705c121SKalle Valo static int iwl_mvm_send_sta_igtk(struct iwl_mvm *mvm, 2995e705c121SKalle Valo struct ieee80211_key_conf *keyconf, 2996e705c121SKalle Valo u8 sta_id, bool remove_key) 2997e705c121SKalle Valo { 2998e705c121SKalle Valo struct iwl_mvm_mgmt_mcast_key_cmd igtk_cmd = {}; 2999e705c121SKalle Valo 3000e705c121SKalle Valo /* verify the key details match the required command's expectations */ 30018e160ab8SAyala Beker if (WARN_ON((keyconf->flags & IEEE80211_KEY_FLAG_PAIRWISE) || 30028e160ab8SAyala Beker (keyconf->keyidx != 4 && keyconf->keyidx != 5) || 30038e160ab8SAyala Beker (keyconf->cipher != WLAN_CIPHER_SUITE_AES_CMAC && 30048e160ab8SAyala Beker keyconf->cipher != WLAN_CIPHER_SUITE_BIP_GMAC_128 && 30058e160ab8SAyala Beker keyconf->cipher != WLAN_CIPHER_SUITE_BIP_GMAC_256))) 30068e160ab8SAyala Beker return -EINVAL; 30078e160ab8SAyala Beker 30088e160ab8SAyala Beker if (WARN_ON(!iwl_mvm_has_new_rx_api(mvm) && 30098e160ab8SAyala Beker keyconf->cipher != WLAN_CIPHER_SUITE_AES_CMAC)) 3010e705c121SKalle Valo return -EINVAL; 3011e705c121SKalle Valo 3012e705c121SKalle Valo igtk_cmd.key_id = cpu_to_le32(keyconf->keyidx); 3013e705c121SKalle Valo igtk_cmd.sta_id = cpu_to_le32(sta_id); 3014e705c121SKalle Valo 3015e705c121SKalle Valo if (remove_key) { 3016e705c121SKalle Valo igtk_cmd.ctrl_flags |= cpu_to_le32(STA_KEY_NOT_VALID); 3017e705c121SKalle Valo } else { 3018e705c121SKalle Valo struct ieee80211_key_seq seq; 3019e705c121SKalle Valo const u8 *pn; 3020e705c121SKalle Valo 3021aa950524SAyala Beker switch (keyconf->cipher) { 3022aa950524SAyala Beker case WLAN_CIPHER_SUITE_AES_CMAC: 3023aa950524SAyala Beker igtk_cmd.ctrl_flags |= cpu_to_le32(STA_KEY_FLG_CCM); 3024aa950524SAyala Beker break; 30258e160ab8SAyala Beker case WLAN_CIPHER_SUITE_BIP_GMAC_128: 30268e160ab8SAyala Beker case WLAN_CIPHER_SUITE_BIP_GMAC_256: 30278e160ab8SAyala Beker igtk_cmd.ctrl_flags |= cpu_to_le32(STA_KEY_FLG_GCMP); 30288e160ab8SAyala Beker break; 3029aa950524SAyala Beker default: 3030aa950524SAyala Beker return -EINVAL; 3031aa950524SAyala Beker } 3032aa950524SAyala Beker 30338e160ab8SAyala Beker memcpy(igtk_cmd.igtk, keyconf->key, keyconf->keylen); 30348e160ab8SAyala Beker if (keyconf->cipher == WLAN_CIPHER_SUITE_BIP_GMAC_256) 30358e160ab8SAyala Beker igtk_cmd.ctrl_flags |= 30368e160ab8SAyala Beker cpu_to_le32(STA_KEY_FLG_KEY_32BYTES); 3037e705c121SKalle Valo ieee80211_get_key_rx_seq(keyconf, 0, &seq); 3038e705c121SKalle Valo pn = seq.aes_cmac.pn; 3039e705c121SKalle Valo igtk_cmd.receive_seq_cnt = cpu_to_le64(((u64) pn[5] << 0) | 3040e705c121SKalle Valo ((u64) pn[4] << 8) | 3041e705c121SKalle Valo ((u64) pn[3] << 16) | 3042e705c121SKalle Valo ((u64) pn[2] << 24) | 3043e705c121SKalle Valo ((u64) pn[1] << 32) | 3044e705c121SKalle Valo ((u64) pn[0] << 40)); 3045e705c121SKalle Valo } 3046e705c121SKalle Valo 3047e705c121SKalle Valo IWL_DEBUG_INFO(mvm, "%s igtk for sta %u\n", 3048e705c121SKalle Valo remove_key ? "removing" : "installing", 3049e705c121SKalle Valo igtk_cmd.sta_id); 3050e705c121SKalle Valo 30518e160ab8SAyala Beker if (!iwl_mvm_has_new_rx_api(mvm)) { 30528e160ab8SAyala Beker struct iwl_mvm_mgmt_mcast_key_cmd_v1 igtk_cmd_v1 = { 30538e160ab8SAyala Beker .ctrl_flags = igtk_cmd.ctrl_flags, 30548e160ab8SAyala Beker .key_id = igtk_cmd.key_id, 30558e160ab8SAyala Beker .sta_id = igtk_cmd.sta_id, 30568e160ab8SAyala Beker .receive_seq_cnt = igtk_cmd.receive_seq_cnt 30578e160ab8SAyala Beker }; 30588e160ab8SAyala Beker 30598e160ab8SAyala Beker memcpy(igtk_cmd_v1.igtk, igtk_cmd.igtk, 30608e160ab8SAyala Beker ARRAY_SIZE(igtk_cmd_v1.igtk)); 30618e160ab8SAyala Beker return iwl_mvm_send_cmd_pdu(mvm, MGMT_MCAST_KEY, 0, 30628e160ab8SAyala Beker sizeof(igtk_cmd_v1), &igtk_cmd_v1); 30638e160ab8SAyala Beker } 3064e705c121SKalle Valo return iwl_mvm_send_cmd_pdu(mvm, MGMT_MCAST_KEY, 0, 3065e705c121SKalle Valo sizeof(igtk_cmd), &igtk_cmd); 3066e705c121SKalle Valo } 3067e705c121SKalle Valo 3068e705c121SKalle Valo 3069e705c121SKalle Valo static inline u8 *iwl_mvm_get_mac_addr(struct iwl_mvm *mvm, 3070e705c121SKalle Valo struct ieee80211_vif *vif, 3071e705c121SKalle Valo struct ieee80211_sta *sta) 3072e705c121SKalle Valo { 3073e705c121SKalle Valo struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 3074e705c121SKalle Valo 3075e705c121SKalle Valo if (sta) 3076e705c121SKalle Valo return sta->addr; 3077e705c121SKalle Valo 3078e705c121SKalle Valo if (vif->type == NL80211_IFTYPE_STATION && 30790ae98812SSara Sharon mvmvif->ap_sta_id != IWL_MVM_INVALID_STA) { 3080e705c121SKalle Valo u8 sta_id = mvmvif->ap_sta_id; 3081e705c121SKalle Valo sta = rcu_dereference_protected(mvm->fw_id_to_mac_id[sta_id], 3082e705c121SKalle Valo lockdep_is_held(&mvm->mutex)); 3083e705c121SKalle Valo return sta->addr; 3084e705c121SKalle Valo } 3085e705c121SKalle Valo 3086e705c121SKalle Valo 3087e705c121SKalle Valo return NULL; 3088e705c121SKalle Valo } 3089e705c121SKalle Valo 3090e705c121SKalle Valo static int __iwl_mvm_set_sta_key(struct iwl_mvm *mvm, 3091e705c121SKalle Valo struct ieee80211_vif *vif, 3092e705c121SKalle Valo struct ieee80211_sta *sta, 3093e705c121SKalle Valo struct ieee80211_key_conf *keyconf, 30944615fd15SEmmanuel Grumbach u8 key_offset, 3095e705c121SKalle Valo bool mcast) 3096e705c121SKalle Valo { 3097e705c121SKalle Valo struct iwl_mvm_sta *mvm_sta = iwl_mvm_sta_from_mac80211(sta); 3098e705c121SKalle Valo int ret; 3099e705c121SKalle Valo const u8 *addr; 3100e705c121SKalle Valo struct ieee80211_key_seq seq; 3101e705c121SKalle Valo u16 p1k[5]; 3102e705c121SKalle Valo 3103e705c121SKalle Valo switch (keyconf->cipher) { 3104e705c121SKalle Valo case WLAN_CIPHER_SUITE_TKIP: 3105e705c121SKalle Valo addr = iwl_mvm_get_mac_addr(mvm, vif, sta); 3106e705c121SKalle Valo /* get phase 1 key from mac80211 */ 3107e705c121SKalle Valo ieee80211_get_key_rx_seq(keyconf, 0, &seq); 3108e705c121SKalle Valo ieee80211_get_tkip_rx_p1k(keyconf, addr, seq.tkip.iv32, p1k); 3109e705c121SKalle Valo ret = iwl_mvm_send_sta_key(mvm, mvm_sta, keyconf, mcast, 31104615fd15SEmmanuel Grumbach seq.tkip.iv32, p1k, 0, key_offset); 3111e705c121SKalle Valo break; 3112e705c121SKalle Valo case WLAN_CIPHER_SUITE_CCMP: 3113e705c121SKalle Valo case WLAN_CIPHER_SUITE_WEP40: 3114e705c121SKalle Valo case WLAN_CIPHER_SUITE_WEP104: 31152a53d166SAyala Beker case WLAN_CIPHER_SUITE_GCMP: 31162a53d166SAyala Beker case WLAN_CIPHER_SUITE_GCMP_256: 3117e705c121SKalle Valo ret = iwl_mvm_send_sta_key(mvm, mvm_sta, keyconf, mcast, 31184615fd15SEmmanuel Grumbach 0, NULL, 0, key_offset); 3119e705c121SKalle Valo break; 3120e705c121SKalle Valo default: 3121e705c121SKalle Valo ret = iwl_mvm_send_sta_key(mvm, mvm_sta, keyconf, mcast, 31224615fd15SEmmanuel Grumbach 0, NULL, 0, key_offset); 3123e705c121SKalle Valo } 3124e705c121SKalle Valo 3125e705c121SKalle Valo return ret; 3126e705c121SKalle Valo } 3127e705c121SKalle Valo 3128e705c121SKalle Valo static int __iwl_mvm_remove_sta_key(struct iwl_mvm *mvm, u8 sta_id, 3129e705c121SKalle Valo struct ieee80211_key_conf *keyconf, 3130e705c121SKalle Valo bool mcast) 3131e705c121SKalle Valo { 313245c458b4SSara Sharon union { 313345c458b4SSara Sharon struct iwl_mvm_add_sta_key_cmd_v1 cmd_v1; 313445c458b4SSara Sharon struct iwl_mvm_add_sta_key_cmd cmd; 313545c458b4SSara Sharon } u = {}; 313645c458b4SSara Sharon bool new_api = fw_has_api(&mvm->fw->ucode_capa, 313745c458b4SSara Sharon IWL_UCODE_TLV_API_TKIP_MIC_KEYS); 3138e705c121SKalle Valo __le16 key_flags; 313945c458b4SSara Sharon int ret, size; 3140e705c121SKalle Valo u32 status; 3141e705c121SKalle Valo 3142e705c121SKalle Valo key_flags = cpu_to_le16((keyconf->keyidx << STA_KEY_FLG_KEYID_POS) & 3143e705c121SKalle Valo STA_KEY_FLG_KEYID_MSK); 3144e705c121SKalle Valo key_flags |= cpu_to_le16(STA_KEY_FLG_NO_ENC | STA_KEY_FLG_WEP_KEY_MAP); 3145e705c121SKalle Valo key_flags |= cpu_to_le16(STA_KEY_NOT_VALID); 3146e705c121SKalle Valo 3147e705c121SKalle Valo if (mcast) 3148e705c121SKalle Valo key_flags |= cpu_to_le16(STA_KEY_MULTICAST); 3149e705c121SKalle Valo 315045c458b4SSara Sharon /* 315145c458b4SSara Sharon * The fields assigned here are in the same location at the start 315245c458b4SSara Sharon * of the command, so we can do this union trick. 315345c458b4SSara Sharon */ 315445c458b4SSara Sharon u.cmd.common.key_flags = key_flags; 315545c458b4SSara Sharon u.cmd.common.key_offset = keyconf->hw_key_idx; 315645c458b4SSara Sharon u.cmd.common.sta_id = sta_id; 315745c458b4SSara Sharon 315845c458b4SSara Sharon size = new_api ? sizeof(u.cmd) : sizeof(u.cmd_v1); 3159e705c121SKalle Valo 3160e705c121SKalle Valo status = ADD_STA_SUCCESS; 316145c458b4SSara Sharon ret = iwl_mvm_send_cmd_pdu_status(mvm, ADD_STA_KEY, size, &u.cmd, 316245c458b4SSara Sharon &status); 3163e705c121SKalle Valo 3164e705c121SKalle Valo switch (status) { 3165e705c121SKalle Valo case ADD_STA_SUCCESS: 3166e705c121SKalle Valo IWL_DEBUG_WEP(mvm, "MODIFY_STA: remove sta key passed\n"); 3167e705c121SKalle Valo break; 3168e705c121SKalle Valo default: 3169e705c121SKalle Valo ret = -EIO; 3170e705c121SKalle Valo IWL_ERR(mvm, "MODIFY_STA: remove sta key failed\n"); 3171e705c121SKalle Valo break; 3172e705c121SKalle Valo } 3173e705c121SKalle Valo 3174e705c121SKalle Valo return ret; 3175e705c121SKalle Valo } 3176e705c121SKalle Valo 3177e705c121SKalle Valo int iwl_mvm_set_sta_key(struct iwl_mvm *mvm, 3178e705c121SKalle Valo struct ieee80211_vif *vif, 3179e705c121SKalle Valo struct ieee80211_sta *sta, 3180e705c121SKalle Valo struct ieee80211_key_conf *keyconf, 31814615fd15SEmmanuel Grumbach u8 key_offset) 3182e705c121SKalle Valo { 3183e705c121SKalle Valo bool mcast = !(keyconf->flags & IEEE80211_KEY_FLAG_PAIRWISE); 31845f7a1847SJohannes Berg struct iwl_mvm_sta *mvm_sta; 3185e705c121SKalle Valo u8 sta_id; 3186e705c121SKalle Valo int ret; 3187e705c121SKalle Valo static const u8 __maybe_unused zero_addr[ETH_ALEN] = {0}; 3188e705c121SKalle Valo 3189e705c121SKalle Valo lockdep_assert_held(&mvm->mutex); 3190e705c121SKalle Valo 3191e705c121SKalle Valo /* Get the station id from the mvm local station table */ 31925f7a1847SJohannes Berg mvm_sta = iwl_mvm_get_key_sta(mvm, vif, sta); 31935f7a1847SJohannes Berg if (!mvm_sta) { 31945f7a1847SJohannes Berg IWL_ERR(mvm, "Failed to find station\n"); 3195e705c121SKalle Valo return -EINVAL; 3196e705c121SKalle Valo } 31975f7a1847SJohannes Berg sta_id = mvm_sta->sta_id; 3198e705c121SKalle Valo 31998e160ab8SAyala Beker if (keyconf->cipher == WLAN_CIPHER_SUITE_AES_CMAC || 32008e160ab8SAyala Beker keyconf->cipher == WLAN_CIPHER_SUITE_BIP_GMAC_128 || 32018e160ab8SAyala Beker keyconf->cipher == WLAN_CIPHER_SUITE_BIP_GMAC_256) { 3202e705c121SKalle Valo ret = iwl_mvm_send_sta_igtk(mvm, keyconf, sta_id, false); 3203e705c121SKalle Valo goto end; 3204e705c121SKalle Valo } 3205e705c121SKalle Valo 3206e705c121SKalle Valo /* 3207e705c121SKalle Valo * It is possible that the 'sta' parameter is NULL, and thus 3208e705c121SKalle Valo * there is a need to retrieve the sta from the local station table. 3209e705c121SKalle Valo */ 3210e705c121SKalle Valo if (!sta) { 3211e705c121SKalle Valo sta = rcu_dereference_protected(mvm->fw_id_to_mac_id[sta_id], 3212e705c121SKalle Valo lockdep_is_held(&mvm->mutex)); 3213e705c121SKalle Valo if (IS_ERR_OR_NULL(sta)) { 3214e705c121SKalle Valo IWL_ERR(mvm, "Invalid station id\n"); 3215e705c121SKalle Valo return -EINVAL; 3216e705c121SKalle Valo } 3217e705c121SKalle Valo } 3218e705c121SKalle Valo 3219e705c121SKalle Valo if (WARN_ON_ONCE(iwl_mvm_sta_from_mac80211(sta)->vif != vif)) 3220e705c121SKalle Valo return -EINVAL; 3221e705c121SKalle Valo 32224615fd15SEmmanuel Grumbach /* If the key_offset is not pre-assigned, we need to find a 32234615fd15SEmmanuel Grumbach * new offset to use. In normal cases, the offset is not 32244615fd15SEmmanuel Grumbach * pre-assigned, but during HW_RESTART we want to reuse the 32254615fd15SEmmanuel Grumbach * same indices, so we pass them when this function is called. 32264615fd15SEmmanuel Grumbach * 32274615fd15SEmmanuel Grumbach * In D3 entry, we need to hardcoded the indices (because the 32284615fd15SEmmanuel Grumbach * firmware hardcodes the PTK offset to 0). In this case, we 32294615fd15SEmmanuel Grumbach * need to make sure we don't overwrite the hw_key_idx in the 32304615fd15SEmmanuel Grumbach * keyconf structure, because otherwise we cannot configure 32314615fd15SEmmanuel Grumbach * the original ones back when resuming. 3232e705c121SKalle Valo */ 32334615fd15SEmmanuel Grumbach if (key_offset == STA_KEY_IDX_INVALID) { 32344615fd15SEmmanuel Grumbach key_offset = iwl_mvm_set_fw_key_idx(mvm); 32354615fd15SEmmanuel Grumbach if (key_offset == STA_KEY_IDX_INVALID) 3236e705c121SKalle Valo return -ENOSPC; 32374615fd15SEmmanuel Grumbach keyconf->hw_key_idx = key_offset; 3238e705c121SKalle Valo } 3239e705c121SKalle Valo 32404615fd15SEmmanuel Grumbach ret = __iwl_mvm_set_sta_key(mvm, vif, sta, keyconf, key_offset, mcast); 32419c3deeb5SLuca Coelho if (ret) 3242e705c121SKalle Valo goto end; 3243e705c121SKalle Valo 3244e705c121SKalle Valo /* 3245e705c121SKalle Valo * For WEP, the same key is used for multicast and unicast. Upload it 3246e705c121SKalle Valo * again, using the same key offset, and now pointing the other one 3247e705c121SKalle Valo * to the same key slot (offset). 3248e705c121SKalle Valo * If this fails, remove the original as well. 3249e705c121SKalle Valo */ 3250e705c121SKalle Valo if (keyconf->cipher == WLAN_CIPHER_SUITE_WEP40 || 3251e705c121SKalle Valo keyconf->cipher == WLAN_CIPHER_SUITE_WEP104) { 32524615fd15SEmmanuel Grumbach ret = __iwl_mvm_set_sta_key(mvm, vif, sta, keyconf, 32534615fd15SEmmanuel Grumbach key_offset, !mcast); 3254e705c121SKalle Valo if (ret) { 3255e705c121SKalle Valo __iwl_mvm_remove_sta_key(mvm, sta_id, keyconf, mcast); 32569c3deeb5SLuca Coelho goto end; 3257e705c121SKalle Valo } 3258e705c121SKalle Valo } 3259e705c121SKalle Valo 32609c3deeb5SLuca Coelho __set_bit(key_offset, mvm->fw_key_table); 32619c3deeb5SLuca Coelho 3262e705c121SKalle Valo end: 3263e705c121SKalle Valo IWL_DEBUG_WEP(mvm, "key: cipher=%x len=%d idx=%d sta=%pM ret=%d\n", 3264e705c121SKalle Valo keyconf->cipher, keyconf->keylen, keyconf->keyidx, 3265e705c121SKalle Valo sta ? sta->addr : zero_addr, ret); 3266e705c121SKalle Valo return ret; 3267e705c121SKalle Valo } 3268e705c121SKalle Valo 3269e705c121SKalle Valo int iwl_mvm_remove_sta_key(struct iwl_mvm *mvm, 3270e705c121SKalle Valo struct ieee80211_vif *vif, 3271e705c121SKalle Valo struct ieee80211_sta *sta, 3272e705c121SKalle Valo struct ieee80211_key_conf *keyconf) 3273e705c121SKalle Valo { 3274e705c121SKalle Valo bool mcast = !(keyconf->flags & IEEE80211_KEY_FLAG_PAIRWISE); 32755f7a1847SJohannes Berg struct iwl_mvm_sta *mvm_sta; 32760ae98812SSara Sharon u8 sta_id = IWL_MVM_INVALID_STA; 3277e705c121SKalle Valo int ret, i; 3278e705c121SKalle Valo 3279e705c121SKalle Valo lockdep_assert_held(&mvm->mutex); 3280e705c121SKalle Valo 32815f7a1847SJohannes Berg /* Get the station from the mvm local station table */ 32825f7a1847SJohannes Berg mvm_sta = iwl_mvm_get_key_sta(mvm, vif, sta); 3283cd4d23c1SIlan Peer if (!mvm_sta) { 3284cd4d23c1SIlan Peer IWL_ERR(mvm, "Failed to find station\n"); 3285cd4d23c1SIlan Peer return -EINVAL; 3286cd4d23c1SIlan Peer } 3287cd4d23c1SIlan Peer sta_id = mvm_sta->sta_id; 3288e705c121SKalle Valo 3289e705c121SKalle Valo IWL_DEBUG_WEP(mvm, "mvm remove dynamic key: idx=%d sta=%d\n", 3290e705c121SKalle Valo keyconf->keyidx, sta_id); 3291e705c121SKalle Valo 32928e160ab8SAyala Beker if (keyconf->cipher == WLAN_CIPHER_SUITE_AES_CMAC || 32938e160ab8SAyala Beker keyconf->cipher == WLAN_CIPHER_SUITE_BIP_GMAC_128 || 32948e160ab8SAyala Beker keyconf->cipher == WLAN_CIPHER_SUITE_BIP_GMAC_256) 3295e705c121SKalle Valo return iwl_mvm_send_sta_igtk(mvm, keyconf, sta_id, true); 3296e705c121SKalle Valo 3297e705c121SKalle Valo if (!__test_and_clear_bit(keyconf->hw_key_idx, mvm->fw_key_table)) { 3298e705c121SKalle Valo IWL_ERR(mvm, "offset %d not used in fw key table.\n", 3299e705c121SKalle Valo keyconf->hw_key_idx); 3300e705c121SKalle Valo return -ENOENT; 3301e705c121SKalle Valo } 3302e705c121SKalle Valo 3303e705c121SKalle Valo /* track which key was deleted last */ 3304e705c121SKalle Valo for (i = 0; i < STA_KEY_MAX_NUM; i++) { 3305e705c121SKalle Valo if (mvm->fw_key_deleted[i] < U8_MAX) 3306e705c121SKalle Valo mvm->fw_key_deleted[i]++; 3307e705c121SKalle Valo } 3308e705c121SKalle Valo mvm->fw_key_deleted[keyconf->hw_key_idx] = 0; 3309e705c121SKalle Valo 33105f7a1847SJohannes Berg if (!mvm_sta) { 3311e705c121SKalle Valo IWL_DEBUG_WEP(mvm, "station non-existent, early return.\n"); 3312e705c121SKalle Valo return 0; 3313e705c121SKalle Valo } 3314e705c121SKalle Valo 3315e705c121SKalle Valo ret = __iwl_mvm_remove_sta_key(mvm, sta_id, keyconf, mcast); 3316e705c121SKalle Valo if (ret) 3317e705c121SKalle Valo return ret; 3318e705c121SKalle Valo 3319e705c121SKalle Valo /* delete WEP key twice to get rid of (now useless) offset */ 3320e705c121SKalle Valo if (keyconf->cipher == WLAN_CIPHER_SUITE_WEP40 || 3321e705c121SKalle Valo keyconf->cipher == WLAN_CIPHER_SUITE_WEP104) 3322e705c121SKalle Valo ret = __iwl_mvm_remove_sta_key(mvm, sta_id, keyconf, !mcast); 3323e705c121SKalle Valo 3324e705c121SKalle Valo return ret; 3325e705c121SKalle Valo } 3326e705c121SKalle Valo 3327e705c121SKalle Valo void iwl_mvm_update_tkip_key(struct iwl_mvm *mvm, 3328e705c121SKalle Valo struct ieee80211_vif *vif, 3329e705c121SKalle Valo struct ieee80211_key_conf *keyconf, 3330e705c121SKalle Valo struct ieee80211_sta *sta, u32 iv32, 3331e705c121SKalle Valo u16 *phase1key) 3332e705c121SKalle Valo { 3333e705c121SKalle Valo struct iwl_mvm_sta *mvm_sta; 3334e705c121SKalle Valo bool mcast = !(keyconf->flags & IEEE80211_KEY_FLAG_PAIRWISE); 3335e705c121SKalle Valo 3336e705c121SKalle Valo rcu_read_lock(); 3337e705c121SKalle Valo 33385f7a1847SJohannes Berg mvm_sta = iwl_mvm_get_key_sta(mvm, vif, sta); 33395f7a1847SJohannes Berg if (WARN_ON_ONCE(!mvm_sta)) 334012f17211SEmmanuel Grumbach goto unlock; 3341e705c121SKalle Valo iwl_mvm_send_sta_key(mvm, mvm_sta, keyconf, mcast, 33424615fd15SEmmanuel Grumbach iv32, phase1key, CMD_ASYNC, keyconf->hw_key_idx); 334312f17211SEmmanuel Grumbach 334412f17211SEmmanuel Grumbach unlock: 3345e705c121SKalle Valo rcu_read_unlock(); 3346e705c121SKalle Valo } 3347e705c121SKalle Valo 3348e705c121SKalle Valo void iwl_mvm_sta_modify_ps_wake(struct iwl_mvm *mvm, 3349e705c121SKalle Valo struct ieee80211_sta *sta) 3350e705c121SKalle Valo { 3351e705c121SKalle Valo struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta); 3352e705c121SKalle Valo struct iwl_mvm_add_sta_cmd cmd = { 3353e705c121SKalle Valo .add_modify = STA_MODE_MODIFY, 3354e705c121SKalle Valo .sta_id = mvmsta->sta_id, 3355e705c121SKalle Valo .station_flags_msk = cpu_to_le32(STA_FLG_PS), 3356e705c121SKalle Valo .mac_id_n_color = cpu_to_le32(mvmsta->mac_id_n_color), 3357e705c121SKalle Valo }; 3358e705c121SKalle Valo int ret; 3359e705c121SKalle Valo 3360854c5705SSara Sharon ret = iwl_mvm_send_cmd_pdu(mvm, ADD_STA, CMD_ASYNC, 3361854c5705SSara Sharon iwl_mvm_add_sta_cmd_size(mvm), &cmd); 3362e705c121SKalle Valo if (ret) 3363e705c121SKalle Valo IWL_ERR(mvm, "Failed to send ADD_STA command (%d)\n", ret); 3364e705c121SKalle Valo } 3365e705c121SKalle Valo 3366e705c121SKalle Valo void iwl_mvm_sta_modify_sleep_tx_count(struct iwl_mvm *mvm, 3367e705c121SKalle Valo struct ieee80211_sta *sta, 3368e705c121SKalle Valo enum ieee80211_frame_release_type reason, 3369e705c121SKalle Valo u16 cnt, u16 tids, bool more_data, 33709a3fcf91SSara Sharon bool single_sta_queue) 3371e705c121SKalle Valo { 3372e705c121SKalle Valo struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta); 3373e705c121SKalle Valo struct iwl_mvm_add_sta_cmd cmd = { 3374e705c121SKalle Valo .add_modify = STA_MODE_MODIFY, 3375e705c121SKalle Valo .sta_id = mvmsta->sta_id, 3376e705c121SKalle Valo .modify_mask = STA_MODIFY_SLEEPING_STA_TX_COUNT, 3377e705c121SKalle Valo .sleep_tx_count = cpu_to_le16(cnt), 3378e705c121SKalle Valo .mac_id_n_color = cpu_to_le32(mvmsta->mac_id_n_color), 3379e705c121SKalle Valo }; 3380e705c121SKalle Valo int tid, ret; 3381e705c121SKalle Valo unsigned long _tids = tids; 3382e705c121SKalle Valo 3383e705c121SKalle Valo /* convert TIDs to ACs - we don't support TSPEC so that's OK 3384e705c121SKalle Valo * Note that this field is reserved and unused by firmware not 3385e705c121SKalle Valo * supporting GO uAPSD, so it's safe to always do this. 3386e705c121SKalle Valo */ 3387e705c121SKalle Valo for_each_set_bit(tid, &_tids, IWL_MAX_TID_COUNT) 3388e705c121SKalle Valo cmd.awake_acs |= BIT(tid_to_ucode_ac[tid]); 3389e705c121SKalle Valo 33909a3fcf91SSara Sharon /* If we're releasing frames from aggregation or dqa queues then check 33919a3fcf91SSara Sharon * if all the queues that we're releasing frames from, combined, have: 3392e705c121SKalle Valo * - more frames than the service period, in which case more_data 3393e705c121SKalle Valo * needs to be set 3394e705c121SKalle Valo * - fewer than 'cnt' frames, in which case we need to adjust the 3395e705c121SKalle Valo * firmware command (but do that unconditionally) 3396e705c121SKalle Valo */ 33979a3fcf91SSara Sharon if (single_sta_queue) { 3398e705c121SKalle Valo int remaining = cnt; 339936be0eb6SEmmanuel Grumbach int sleep_tx_count; 3400e705c121SKalle Valo 3401e705c121SKalle Valo spin_lock_bh(&mvmsta->lock); 3402e705c121SKalle Valo for_each_set_bit(tid, &_tids, IWL_MAX_TID_COUNT) { 3403e705c121SKalle Valo struct iwl_mvm_tid_data *tid_data; 3404e705c121SKalle Valo u16 n_queued; 3405e705c121SKalle Valo 3406e705c121SKalle Valo tid_data = &mvmsta->tid_data[tid]; 34079a3fcf91SSara Sharon if (WARN(!iwl_mvm_is_dqa_supported(mvm) && 34089a3fcf91SSara Sharon tid_data->state != IWL_AGG_ON && 3409e705c121SKalle Valo tid_data->state != IWL_EMPTYING_HW_QUEUE_DELBA, 3410e705c121SKalle Valo "TID %d state is %d\n", 3411e705c121SKalle Valo tid, tid_data->state)) { 3412e705c121SKalle Valo spin_unlock_bh(&mvmsta->lock); 3413e705c121SKalle Valo ieee80211_sta_eosp(sta); 3414e705c121SKalle Valo return; 3415e705c121SKalle Valo } 3416e705c121SKalle Valo 3417e705c121SKalle Valo n_queued = iwl_mvm_tid_queued(tid_data); 3418e705c121SKalle Valo if (n_queued > remaining) { 3419e705c121SKalle Valo more_data = true; 3420e705c121SKalle Valo remaining = 0; 3421e705c121SKalle Valo break; 3422e705c121SKalle Valo } 3423e705c121SKalle Valo remaining -= n_queued; 3424e705c121SKalle Valo } 342536be0eb6SEmmanuel Grumbach sleep_tx_count = cnt - remaining; 342636be0eb6SEmmanuel Grumbach if (reason == IEEE80211_FRAME_RELEASE_UAPSD) 342736be0eb6SEmmanuel Grumbach mvmsta->sleep_tx_count = sleep_tx_count; 3428e705c121SKalle Valo spin_unlock_bh(&mvmsta->lock); 3429e705c121SKalle Valo 343036be0eb6SEmmanuel Grumbach cmd.sleep_tx_count = cpu_to_le16(sleep_tx_count); 3431e705c121SKalle Valo if (WARN_ON(cnt - remaining == 0)) { 3432e705c121SKalle Valo ieee80211_sta_eosp(sta); 3433e705c121SKalle Valo return; 3434e705c121SKalle Valo } 3435e705c121SKalle Valo } 3436e705c121SKalle Valo 3437e705c121SKalle Valo /* Note: this is ignored by firmware not supporting GO uAPSD */ 3438e705c121SKalle Valo if (more_data) 3439e705c121SKalle Valo cmd.sleep_state_flags |= cpu_to_le16(STA_SLEEP_STATE_MOREDATA); 3440e705c121SKalle Valo 3441e705c121SKalle Valo if (reason == IEEE80211_FRAME_RELEASE_PSPOLL) { 3442e705c121SKalle Valo mvmsta->next_status_eosp = true; 3443e705c121SKalle Valo cmd.sleep_state_flags |= cpu_to_le16(STA_SLEEP_STATE_PS_POLL); 3444e705c121SKalle Valo } else { 3445e705c121SKalle Valo cmd.sleep_state_flags |= cpu_to_le16(STA_SLEEP_STATE_UAPSD); 3446e705c121SKalle Valo } 3447e705c121SKalle Valo 3448156f92f2SEmmanuel Grumbach /* block the Tx queues until the FW updated the sleep Tx count */ 3449156f92f2SEmmanuel Grumbach iwl_trans_block_txq_ptrs(mvm->trans, true); 3450156f92f2SEmmanuel Grumbach 3451156f92f2SEmmanuel Grumbach ret = iwl_mvm_send_cmd_pdu(mvm, ADD_STA, 3452156f92f2SEmmanuel Grumbach CMD_ASYNC | CMD_WANT_ASYNC_CALLBACK, 3453854c5705SSara Sharon iwl_mvm_add_sta_cmd_size(mvm), &cmd); 3454e705c121SKalle Valo if (ret) 3455e705c121SKalle Valo IWL_ERR(mvm, "Failed to send ADD_STA command (%d)\n", ret); 3456e705c121SKalle Valo } 3457e705c121SKalle Valo 3458e705c121SKalle Valo void iwl_mvm_rx_eosp_notif(struct iwl_mvm *mvm, 3459e705c121SKalle Valo struct iwl_rx_cmd_buffer *rxb) 3460e705c121SKalle Valo { 3461e705c121SKalle Valo struct iwl_rx_packet *pkt = rxb_addr(rxb); 3462e705c121SKalle Valo struct iwl_mvm_eosp_notification *notif = (void *)pkt->data; 3463e705c121SKalle Valo struct ieee80211_sta *sta; 3464e705c121SKalle Valo u32 sta_id = le32_to_cpu(notif->sta_id); 3465e705c121SKalle Valo 3466e705c121SKalle Valo if (WARN_ON_ONCE(sta_id >= IWL_MVM_STATION_COUNT)) 3467e705c121SKalle Valo return; 3468e705c121SKalle Valo 3469e705c121SKalle Valo rcu_read_lock(); 3470e705c121SKalle Valo sta = rcu_dereference(mvm->fw_id_to_mac_id[sta_id]); 3471e705c121SKalle Valo if (!IS_ERR_OR_NULL(sta)) 3472e705c121SKalle Valo ieee80211_sta_eosp(sta); 3473e705c121SKalle Valo rcu_read_unlock(); 3474e705c121SKalle Valo } 3475e705c121SKalle Valo 3476e705c121SKalle Valo void iwl_mvm_sta_modify_disable_tx(struct iwl_mvm *mvm, 3477e705c121SKalle Valo struct iwl_mvm_sta *mvmsta, bool disable) 3478e705c121SKalle Valo { 3479e705c121SKalle Valo struct iwl_mvm_add_sta_cmd cmd = { 3480e705c121SKalle Valo .add_modify = STA_MODE_MODIFY, 3481e705c121SKalle Valo .sta_id = mvmsta->sta_id, 3482e705c121SKalle Valo .station_flags = disable ? cpu_to_le32(STA_FLG_DISABLE_TX) : 0, 3483e705c121SKalle Valo .station_flags_msk = cpu_to_le32(STA_FLG_DISABLE_TX), 3484e705c121SKalle Valo .mac_id_n_color = cpu_to_le32(mvmsta->mac_id_n_color), 3485e705c121SKalle Valo }; 3486e705c121SKalle Valo int ret; 3487e705c121SKalle Valo 3488854c5705SSara Sharon ret = iwl_mvm_send_cmd_pdu(mvm, ADD_STA, CMD_ASYNC, 3489854c5705SSara Sharon iwl_mvm_add_sta_cmd_size(mvm), &cmd); 3490e705c121SKalle Valo if (ret) 3491e705c121SKalle Valo IWL_ERR(mvm, "Failed to send ADD_STA command (%d)\n", ret); 3492e705c121SKalle Valo } 3493e705c121SKalle Valo 3494e705c121SKalle Valo void iwl_mvm_sta_modify_disable_tx_ap(struct iwl_mvm *mvm, 3495e705c121SKalle Valo struct ieee80211_sta *sta, 3496e705c121SKalle Valo bool disable) 3497e705c121SKalle Valo { 3498e705c121SKalle Valo struct iwl_mvm_sta *mvm_sta = iwl_mvm_sta_from_mac80211(sta); 3499e705c121SKalle Valo 3500e705c121SKalle Valo spin_lock_bh(&mvm_sta->lock); 3501e705c121SKalle Valo 3502e705c121SKalle Valo if (mvm_sta->disable_tx == disable) { 3503e705c121SKalle Valo spin_unlock_bh(&mvm_sta->lock); 3504e705c121SKalle Valo return; 3505e705c121SKalle Valo } 3506e705c121SKalle Valo 3507e705c121SKalle Valo mvm_sta->disable_tx = disable; 3508e705c121SKalle Valo 3509e705c121SKalle Valo /* 3510e705c121SKalle Valo * Tell mac80211 to start/stop queuing tx for this station, 3511e705c121SKalle Valo * but don't stop queuing if there are still pending frames 3512e705c121SKalle Valo * for this station. 3513e705c121SKalle Valo */ 3514e705c121SKalle Valo if (disable || !atomic_read(&mvm->pending_frames[mvm_sta->sta_id])) 3515e705c121SKalle Valo ieee80211_sta_block_awake(mvm->hw, sta, disable); 3516e705c121SKalle Valo 3517e705c121SKalle Valo iwl_mvm_sta_modify_disable_tx(mvm, mvm_sta, disable); 3518e705c121SKalle Valo 3519e705c121SKalle Valo spin_unlock_bh(&mvm_sta->lock); 3520e705c121SKalle Valo } 3521e705c121SKalle Valo 3522e705c121SKalle Valo void iwl_mvm_modify_all_sta_disable_tx(struct iwl_mvm *mvm, 3523e705c121SKalle Valo struct iwl_mvm_vif *mvmvif, 3524e705c121SKalle Valo bool disable) 3525e705c121SKalle Valo { 3526e705c121SKalle Valo struct ieee80211_sta *sta; 3527e705c121SKalle Valo struct iwl_mvm_sta *mvm_sta; 3528e705c121SKalle Valo int i; 3529e705c121SKalle Valo 3530e705c121SKalle Valo lockdep_assert_held(&mvm->mutex); 3531e705c121SKalle Valo 3532e705c121SKalle Valo /* Block/unblock all the stations of the given mvmvif */ 35330ae98812SSara Sharon for (i = 0; i < ARRAY_SIZE(mvm->fw_id_to_mac_id); i++) { 3534e705c121SKalle Valo sta = rcu_dereference_protected(mvm->fw_id_to_mac_id[i], 3535e705c121SKalle Valo lockdep_is_held(&mvm->mutex)); 3536e705c121SKalle Valo if (IS_ERR_OR_NULL(sta)) 3537e705c121SKalle Valo continue; 3538e705c121SKalle Valo 3539e705c121SKalle Valo mvm_sta = iwl_mvm_sta_from_mac80211(sta); 3540e705c121SKalle Valo if (mvm_sta->mac_id_n_color != 3541e705c121SKalle Valo FW_CMD_ID_AND_COLOR(mvmvif->id, mvmvif->color)) 3542e705c121SKalle Valo continue; 3543e705c121SKalle Valo 3544e705c121SKalle Valo iwl_mvm_sta_modify_disable_tx_ap(mvm, sta, disable); 3545e705c121SKalle Valo } 3546e705c121SKalle Valo } 3547e705c121SKalle Valo 3548e705c121SKalle Valo void iwl_mvm_csa_client_absent(struct iwl_mvm *mvm, struct ieee80211_vif *vif) 3549e705c121SKalle Valo { 3550e705c121SKalle Valo struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 3551e705c121SKalle Valo struct iwl_mvm_sta *mvmsta; 3552e705c121SKalle Valo 3553e705c121SKalle Valo rcu_read_lock(); 3554e705c121SKalle Valo 3555e705c121SKalle Valo mvmsta = iwl_mvm_sta_from_staid_rcu(mvm, mvmvif->ap_sta_id); 3556e705c121SKalle Valo 3557e705c121SKalle Valo if (!WARN_ON(!mvmsta)) 3558e705c121SKalle Valo iwl_mvm_sta_modify_disable_tx(mvm, mvmsta, true); 3559e705c121SKalle Valo 3560e705c121SKalle Valo rcu_read_unlock(); 3561e705c121SKalle Valo } 3562