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 { 80ced19f26SSara Sharon if (iwl_mvm_has_new_rx_api(mvm) || 81ced19f26SSara Sharon fw_has_api(&mvm->fw->ucode_capa, IWL_UCODE_TLV_API_STA_TYPE)) 82ced19f26SSara Sharon return sizeof(struct iwl_mvm_add_sta_cmd); 83ced19f26SSara Sharon else 84ced19f26SSara Sharon return sizeof(struct iwl_mvm_add_sta_cmd_v7); 85854c5705SSara Sharon } 86854c5705SSara Sharon 87e705c121SKalle Valo static int iwl_mvm_find_free_sta_id(struct iwl_mvm *mvm, 88e705c121SKalle Valo enum nl80211_iftype iftype) 89e705c121SKalle Valo { 90e705c121SKalle Valo int sta_id; 91e705c121SKalle Valo u32 reserved_ids = 0; 92e705c121SKalle Valo 93e705c121SKalle Valo BUILD_BUG_ON(IWL_MVM_STATION_COUNT > 32); 94e705c121SKalle Valo WARN_ON_ONCE(test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status)); 95e705c121SKalle Valo 96e705c121SKalle Valo lockdep_assert_held(&mvm->mutex); 97e705c121SKalle Valo 98e705c121SKalle Valo /* d0i3/d3 assumes the AP's sta_id (of sta vif) is 0. reserve it. */ 99e705c121SKalle Valo if (iftype != NL80211_IFTYPE_STATION) 100e705c121SKalle Valo reserved_ids = BIT(0); 101e705c121SKalle Valo 102e705c121SKalle Valo /* Don't take rcu_read_lock() since we are protected by mvm->mutex */ 1030ae98812SSara Sharon for (sta_id = 0; sta_id < ARRAY_SIZE(mvm->fw_id_to_mac_id); sta_id++) { 104e705c121SKalle Valo if (BIT(sta_id) & reserved_ids) 105e705c121SKalle Valo continue; 106e705c121SKalle Valo 107e705c121SKalle Valo if (!rcu_dereference_protected(mvm->fw_id_to_mac_id[sta_id], 108e705c121SKalle Valo lockdep_is_held(&mvm->mutex))) 109e705c121SKalle Valo return sta_id; 110e705c121SKalle Valo } 1110ae98812SSara Sharon return IWL_MVM_INVALID_STA; 112e705c121SKalle Valo } 113e705c121SKalle Valo 114e705c121SKalle Valo /* send station add/update command to firmware */ 115e705c121SKalle Valo int iwl_mvm_sta_send_to_fw(struct iwl_mvm *mvm, struct ieee80211_sta *sta, 11624afba76SLiad Kaufman bool update, unsigned int flags) 117e705c121SKalle Valo { 118e705c121SKalle Valo struct iwl_mvm_sta *mvm_sta = iwl_mvm_sta_from_mac80211(sta); 119e705c121SKalle Valo struct iwl_mvm_add_sta_cmd add_sta_cmd = { 120e705c121SKalle Valo .sta_id = mvm_sta->sta_id, 121e705c121SKalle Valo .mac_id_n_color = cpu_to_le32(mvm_sta->mac_id_n_color), 122e705c121SKalle Valo .add_modify = update ? 1 : 0, 123e705c121SKalle Valo .station_flags_msk = cpu_to_le32(STA_FLG_FAT_EN_MSK | 124e705c121SKalle Valo STA_FLG_MIMO_EN_MSK), 125cf0cda19SLiad Kaufman .tid_disable_tx = cpu_to_le16(mvm_sta->tid_disable_agg), 126e705c121SKalle Valo }; 127e705c121SKalle Valo int ret; 128e705c121SKalle Valo u32 status; 129e705c121SKalle Valo u32 agg_size = 0, mpdu_dens = 0; 130e705c121SKalle Valo 131ced19f26SSara Sharon if (fw_has_api(&mvm->fw->ucode_capa, IWL_UCODE_TLV_API_STA_TYPE)) 132ced19f26SSara Sharon add_sta_cmd.station_type = mvm_sta->sta_type; 133ced19f26SSara Sharon 13424afba76SLiad Kaufman if (!update || (flags & STA_MODIFY_QUEUES)) { 135e705c121SKalle Valo memcpy(&add_sta_cmd.addr, sta->addr, ETH_ALEN); 13624afba76SLiad Kaufman 137bb49701bSSara Sharon if (!iwl_mvm_has_new_tx_api(mvm)) { 138bb49701bSSara Sharon add_sta_cmd.tfd_queue_msk = 139bb49701bSSara Sharon cpu_to_le32(mvm_sta->tfd_queue_msk); 140bb49701bSSara Sharon 14124afba76SLiad Kaufman if (flags & STA_MODIFY_QUEUES) 14224afba76SLiad Kaufman add_sta_cmd.modify_mask |= STA_MODIFY_QUEUES; 143bb49701bSSara Sharon } else { 144bb49701bSSara Sharon WARN_ON(flags & STA_MODIFY_QUEUES); 145bb49701bSSara Sharon } 146e705c121SKalle Valo } 147e705c121SKalle Valo 148e705c121SKalle Valo switch (sta->bandwidth) { 149e705c121SKalle Valo case IEEE80211_STA_RX_BW_160: 150e705c121SKalle Valo add_sta_cmd.station_flags |= cpu_to_le32(STA_FLG_FAT_EN_160MHZ); 151e705c121SKalle Valo /* fall through */ 152e705c121SKalle Valo case IEEE80211_STA_RX_BW_80: 153e705c121SKalle Valo add_sta_cmd.station_flags |= cpu_to_le32(STA_FLG_FAT_EN_80MHZ); 154e705c121SKalle Valo /* fall through */ 155e705c121SKalle Valo case IEEE80211_STA_RX_BW_40: 156e705c121SKalle Valo add_sta_cmd.station_flags |= cpu_to_le32(STA_FLG_FAT_EN_40MHZ); 157e705c121SKalle Valo /* fall through */ 158e705c121SKalle Valo case IEEE80211_STA_RX_BW_20: 159e705c121SKalle Valo if (sta->ht_cap.ht_supported) 160e705c121SKalle Valo add_sta_cmd.station_flags |= 161e705c121SKalle Valo cpu_to_le32(STA_FLG_FAT_EN_20MHZ); 162e705c121SKalle Valo break; 163e705c121SKalle Valo } 164e705c121SKalle Valo 165e705c121SKalle Valo switch (sta->rx_nss) { 166e705c121SKalle Valo case 1: 167e705c121SKalle Valo add_sta_cmd.station_flags |= cpu_to_le32(STA_FLG_MIMO_EN_SISO); 168e705c121SKalle Valo break; 169e705c121SKalle Valo case 2: 170e705c121SKalle Valo add_sta_cmd.station_flags |= cpu_to_le32(STA_FLG_MIMO_EN_MIMO2); 171e705c121SKalle Valo break; 172e705c121SKalle Valo case 3 ... 8: 173e705c121SKalle Valo add_sta_cmd.station_flags |= cpu_to_le32(STA_FLG_MIMO_EN_MIMO3); 174e705c121SKalle Valo break; 175e705c121SKalle Valo } 176e705c121SKalle Valo 177e705c121SKalle Valo switch (sta->smps_mode) { 178e705c121SKalle Valo case IEEE80211_SMPS_AUTOMATIC: 179e705c121SKalle Valo case IEEE80211_SMPS_NUM_MODES: 180e705c121SKalle Valo WARN_ON(1); 181e705c121SKalle Valo break; 182e705c121SKalle Valo case IEEE80211_SMPS_STATIC: 183e705c121SKalle Valo /* override NSS */ 184e705c121SKalle Valo add_sta_cmd.station_flags &= ~cpu_to_le32(STA_FLG_MIMO_EN_MSK); 185e705c121SKalle Valo add_sta_cmd.station_flags |= cpu_to_le32(STA_FLG_MIMO_EN_SISO); 186e705c121SKalle Valo break; 187e705c121SKalle Valo case IEEE80211_SMPS_DYNAMIC: 188e705c121SKalle Valo add_sta_cmd.station_flags |= cpu_to_le32(STA_FLG_RTS_MIMO_PROT); 189e705c121SKalle Valo break; 190e705c121SKalle Valo case IEEE80211_SMPS_OFF: 191e705c121SKalle Valo /* nothing */ 192e705c121SKalle Valo break; 193e705c121SKalle Valo } 194e705c121SKalle Valo 195e705c121SKalle Valo if (sta->ht_cap.ht_supported) { 196e705c121SKalle Valo add_sta_cmd.station_flags_msk |= 197e705c121SKalle Valo cpu_to_le32(STA_FLG_MAX_AGG_SIZE_MSK | 198e705c121SKalle Valo STA_FLG_AGG_MPDU_DENS_MSK); 199e705c121SKalle Valo 200e705c121SKalle Valo mpdu_dens = sta->ht_cap.ampdu_density; 201e705c121SKalle Valo } 202e705c121SKalle Valo 203e705c121SKalle Valo if (sta->vht_cap.vht_supported) { 204e705c121SKalle Valo agg_size = sta->vht_cap.cap & 205e705c121SKalle Valo IEEE80211_VHT_CAP_MAX_A_MPDU_LENGTH_EXPONENT_MASK; 206e705c121SKalle Valo agg_size >>= 207e705c121SKalle Valo IEEE80211_VHT_CAP_MAX_A_MPDU_LENGTH_EXPONENT_SHIFT; 208e705c121SKalle Valo } else if (sta->ht_cap.ht_supported) { 209e705c121SKalle Valo agg_size = sta->ht_cap.ampdu_factor; 210e705c121SKalle Valo } 211e705c121SKalle Valo 212e705c121SKalle Valo add_sta_cmd.station_flags |= 213e705c121SKalle Valo cpu_to_le32(agg_size << STA_FLG_MAX_AGG_SIZE_SHIFT); 214e705c121SKalle Valo add_sta_cmd.station_flags |= 215e705c121SKalle Valo cpu_to_le32(mpdu_dens << STA_FLG_AGG_MPDU_DENS_SHIFT); 2166ea29ce5SJohannes Berg if (mvm_sta->associated) 21719c52f46SEmmanuel Grumbach add_sta_cmd.assoc_id = cpu_to_le16(sta->aid); 218e705c121SKalle Valo 21965e25482SJohannes Berg if (sta->wme) { 22065e25482SJohannes Berg add_sta_cmd.modify_mask |= STA_MODIFY_UAPSD_ACS; 22165e25482SJohannes Berg 22265e25482SJohannes Berg if (sta->uapsd_queues & IEEE80211_WMM_IE_STA_QOSINFO_AC_BK) 223c80eb570SEmmanuel Grumbach add_sta_cmd.uapsd_acs |= BIT(AC_BK); 22465e25482SJohannes Berg if (sta->uapsd_queues & IEEE80211_WMM_IE_STA_QOSINFO_AC_BE) 225c80eb570SEmmanuel Grumbach add_sta_cmd.uapsd_acs |= BIT(AC_BE); 22665e25482SJohannes Berg if (sta->uapsd_queues & IEEE80211_WMM_IE_STA_QOSINFO_AC_VI) 227c80eb570SEmmanuel Grumbach add_sta_cmd.uapsd_acs |= BIT(AC_VI); 22865e25482SJohannes Berg if (sta->uapsd_queues & IEEE80211_WMM_IE_STA_QOSINFO_AC_VO) 229c80eb570SEmmanuel Grumbach add_sta_cmd.uapsd_acs |= BIT(AC_VO); 230c80eb570SEmmanuel Grumbach add_sta_cmd.uapsd_acs |= add_sta_cmd.uapsd_acs << 4; 231e71ca5eaSEmmanuel Grumbach add_sta_cmd.sp_length = sta->max_sp ? sta->max_sp * 2 : 128; 23265e25482SJohannes Berg } 23365e25482SJohannes Berg 234e705c121SKalle Valo status = ADD_STA_SUCCESS; 235854c5705SSara Sharon ret = iwl_mvm_send_cmd_pdu_status(mvm, ADD_STA, 236854c5705SSara Sharon iwl_mvm_add_sta_cmd_size(mvm), 237e705c121SKalle Valo &add_sta_cmd, &status); 238e705c121SKalle Valo if (ret) 239e705c121SKalle Valo return ret; 240e705c121SKalle Valo 241837c4da9SSara Sharon switch (status & IWL_ADD_STA_STATUS_MASK) { 242e705c121SKalle Valo case ADD_STA_SUCCESS: 243e705c121SKalle Valo IWL_DEBUG_ASSOC(mvm, "ADD_STA PASSED\n"); 244e705c121SKalle Valo break; 245e705c121SKalle Valo default: 246e705c121SKalle Valo ret = -EIO; 247e705c121SKalle Valo IWL_ERR(mvm, "ADD_STA failed\n"); 248e705c121SKalle Valo break; 249e705c121SKalle Valo } 250e705c121SKalle Valo 251e705c121SKalle Valo return ret; 252e705c121SKalle Valo } 253e705c121SKalle Valo 25410b2b201SSara Sharon static void iwl_mvm_rx_agg_session_expired(unsigned long data) 25510b2b201SSara Sharon { 25610b2b201SSara Sharon struct iwl_mvm_baid_data __rcu **rcu_ptr = (void *)data; 25710b2b201SSara Sharon struct iwl_mvm_baid_data *ba_data; 25810b2b201SSara Sharon struct ieee80211_sta *sta; 25910b2b201SSara Sharon struct iwl_mvm_sta *mvm_sta; 26010b2b201SSara Sharon unsigned long timeout; 26110b2b201SSara Sharon 26210b2b201SSara Sharon rcu_read_lock(); 26310b2b201SSara Sharon 26410b2b201SSara Sharon ba_data = rcu_dereference(*rcu_ptr); 26510b2b201SSara Sharon 26610b2b201SSara Sharon if (WARN_ON(!ba_data)) 26710b2b201SSara Sharon goto unlock; 26810b2b201SSara Sharon 26910b2b201SSara Sharon if (!ba_data->timeout) 27010b2b201SSara Sharon goto unlock; 27110b2b201SSara Sharon 27210b2b201SSara Sharon timeout = ba_data->last_rx + TU_TO_JIFFIES(ba_data->timeout * 2); 27310b2b201SSara Sharon if (time_is_after_jiffies(timeout)) { 27410b2b201SSara Sharon mod_timer(&ba_data->session_timer, timeout); 27510b2b201SSara Sharon goto unlock; 27610b2b201SSara Sharon } 27710b2b201SSara Sharon 27810b2b201SSara Sharon /* Timer expired */ 27910b2b201SSara Sharon sta = rcu_dereference(ba_data->mvm->fw_id_to_mac_id[ba_data->sta_id]); 28010b2b201SSara Sharon mvm_sta = iwl_mvm_sta_from_mac80211(sta); 28110b2b201SSara Sharon ieee80211_stop_rx_ba_session_offl(mvm_sta->vif, 28210b2b201SSara Sharon sta->addr, ba_data->tid); 28310b2b201SSara Sharon unlock: 28410b2b201SSara Sharon rcu_read_unlock(); 28510b2b201SSara Sharon } 28610b2b201SSara Sharon 287e705c121SKalle Valo static int iwl_mvm_tdls_sta_init(struct iwl_mvm *mvm, 288e705c121SKalle Valo struct ieee80211_sta *sta) 289e705c121SKalle Valo { 290e705c121SKalle Valo unsigned long used_hw_queues; 291e705c121SKalle Valo struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta); 292e705c121SKalle Valo unsigned int wdg_timeout = 293e705c121SKalle Valo iwl_mvm_get_wd_timeout(mvm, NULL, true, false); 294e705c121SKalle Valo u32 ac; 295e705c121SKalle Valo 296e705c121SKalle Valo lockdep_assert_held(&mvm->mutex); 297e705c121SKalle Valo 298e705c121SKalle Valo used_hw_queues = iwl_mvm_get_used_hw_queues(mvm, NULL); 299e705c121SKalle Valo 300e705c121SKalle Valo /* Find available queues, and allocate them to the ACs */ 301e705c121SKalle Valo for (ac = 0; ac < IEEE80211_NUM_ACS; ac++) { 302e705c121SKalle Valo u8 queue = find_first_zero_bit(&used_hw_queues, 303e705c121SKalle Valo mvm->first_agg_queue); 304e705c121SKalle Valo 305e705c121SKalle Valo if (queue >= mvm->first_agg_queue) { 306e705c121SKalle Valo IWL_ERR(mvm, "Failed to allocate STA queue\n"); 307e705c121SKalle Valo return -EBUSY; 308e705c121SKalle Valo } 309e705c121SKalle Valo 310e705c121SKalle Valo __set_bit(queue, &used_hw_queues); 311e705c121SKalle Valo mvmsta->hw_queue[ac] = queue; 312e705c121SKalle Valo } 313e705c121SKalle Valo 314e705c121SKalle Valo /* Found a place for all queues - enable them */ 315e705c121SKalle Valo for (ac = 0; ac < IEEE80211_NUM_ACS; ac++) { 316e705c121SKalle Valo iwl_mvm_enable_ac_txq(mvm, mvmsta->hw_queue[ac], 317e705c121SKalle Valo mvmsta->hw_queue[ac], 318e705c121SKalle Valo iwl_mvm_ac_to_tx_fifo[ac], 0, 319e705c121SKalle Valo wdg_timeout); 320e705c121SKalle Valo mvmsta->tfd_queue_msk |= BIT(mvmsta->hw_queue[ac]); 321e705c121SKalle Valo } 322e705c121SKalle Valo 323e705c121SKalle Valo return 0; 324e705c121SKalle Valo } 325e705c121SKalle Valo 326e705c121SKalle Valo static void iwl_mvm_tdls_sta_deinit(struct iwl_mvm *mvm, 327e705c121SKalle Valo struct ieee80211_sta *sta) 328e705c121SKalle Valo { 329e705c121SKalle Valo struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta); 330e705c121SKalle Valo unsigned long sta_msk; 331e705c121SKalle Valo int i; 332e705c121SKalle Valo 333e705c121SKalle Valo lockdep_assert_held(&mvm->mutex); 334e705c121SKalle Valo 335e705c121SKalle Valo /* disable the TDLS STA-specific queues */ 336e705c121SKalle Valo sta_msk = mvmsta->tfd_queue_msk; 337e705c121SKalle Valo for_each_set_bit(i, &sta_msk, sizeof(sta_msk) * BITS_PER_BYTE) 338e705c121SKalle Valo iwl_mvm_disable_txq(mvm, i, i, IWL_MAX_TID_COUNT, 0); 339e705c121SKalle Valo } 340e705c121SKalle Valo 3419794c64fSLiad Kaufman /* Disable aggregations for a bitmap of TIDs for a given station */ 3429794c64fSLiad Kaufman static int iwl_mvm_invalidate_sta_queue(struct iwl_mvm *mvm, int queue, 3439794c64fSLiad Kaufman unsigned long disable_agg_tids, 3449794c64fSLiad Kaufman bool remove_queue) 3459794c64fSLiad Kaufman { 3469794c64fSLiad Kaufman struct iwl_mvm_add_sta_cmd cmd = {}; 3479794c64fSLiad Kaufman struct ieee80211_sta *sta; 3489794c64fSLiad Kaufman struct iwl_mvm_sta *mvmsta; 3499794c64fSLiad Kaufman u32 status; 3509794c64fSLiad Kaufman u8 sta_id; 3519794c64fSLiad Kaufman int ret; 3529794c64fSLiad Kaufman 353bb49701bSSara Sharon if (WARN_ON(iwl_mvm_has_new_tx_api(mvm))) 354bb49701bSSara Sharon return -EINVAL; 355bb49701bSSara Sharon 3569794c64fSLiad Kaufman spin_lock_bh(&mvm->queue_info_lock); 3579794c64fSLiad Kaufman sta_id = mvm->queue_info[queue].ra_sta_id; 3589794c64fSLiad Kaufman spin_unlock_bh(&mvm->queue_info_lock); 3599794c64fSLiad Kaufman 3609794c64fSLiad Kaufman rcu_read_lock(); 3619794c64fSLiad Kaufman 3629794c64fSLiad Kaufman sta = rcu_dereference(mvm->fw_id_to_mac_id[sta_id]); 3639794c64fSLiad Kaufman 3649794c64fSLiad Kaufman if (WARN_ON_ONCE(IS_ERR_OR_NULL(sta))) { 3659794c64fSLiad Kaufman rcu_read_unlock(); 3669794c64fSLiad Kaufman return -EINVAL; 3679794c64fSLiad Kaufman } 3689794c64fSLiad Kaufman 3699794c64fSLiad Kaufman mvmsta = iwl_mvm_sta_from_mac80211(sta); 3709794c64fSLiad Kaufman 3719794c64fSLiad Kaufman mvmsta->tid_disable_agg |= disable_agg_tids; 3729794c64fSLiad Kaufman 3739794c64fSLiad Kaufman cmd.mac_id_n_color = cpu_to_le32(mvmsta->mac_id_n_color); 3749794c64fSLiad Kaufman cmd.sta_id = mvmsta->sta_id; 3759794c64fSLiad Kaufman cmd.add_modify = STA_MODE_MODIFY; 3769794c64fSLiad Kaufman cmd.modify_mask = STA_MODIFY_QUEUES; 3779794c64fSLiad Kaufman if (disable_agg_tids) 3789794c64fSLiad Kaufman cmd.modify_mask |= STA_MODIFY_TID_DISABLE_TX; 3799794c64fSLiad Kaufman if (remove_queue) 3809794c64fSLiad Kaufman cmd.modify_mask |= STA_MODIFY_QUEUE_REMOVAL; 3819794c64fSLiad Kaufman cmd.tfd_queue_msk = cpu_to_le32(mvmsta->tfd_queue_msk); 3829794c64fSLiad Kaufman cmd.tid_disable_tx = cpu_to_le16(mvmsta->tid_disable_agg); 3839794c64fSLiad Kaufman 3849794c64fSLiad Kaufman rcu_read_unlock(); 3859794c64fSLiad Kaufman 3869794c64fSLiad Kaufman /* Notify FW of queue removal from the STA queues */ 3879794c64fSLiad Kaufman status = ADD_STA_SUCCESS; 3889794c64fSLiad Kaufman ret = iwl_mvm_send_cmd_pdu_status(mvm, ADD_STA, 3899794c64fSLiad Kaufman iwl_mvm_add_sta_cmd_size(mvm), 3909794c64fSLiad Kaufman &cmd, &status); 3919794c64fSLiad Kaufman 3929794c64fSLiad Kaufman return ret; 3939794c64fSLiad Kaufman } 3949794c64fSLiad Kaufman 39542db09c1SLiad Kaufman static int iwl_mvm_get_queue_agg_tids(struct iwl_mvm *mvm, int queue) 39642db09c1SLiad Kaufman { 39742db09c1SLiad Kaufman struct ieee80211_sta *sta; 39842db09c1SLiad Kaufman struct iwl_mvm_sta *mvmsta; 39942db09c1SLiad Kaufman unsigned long tid_bitmap; 40042db09c1SLiad Kaufman unsigned long agg_tids = 0; 40142db09c1SLiad Kaufman s8 sta_id; 40242db09c1SLiad Kaufman int tid; 40342db09c1SLiad Kaufman 40442db09c1SLiad Kaufman lockdep_assert_held(&mvm->mutex); 40542db09c1SLiad Kaufman 406bb49701bSSara Sharon if (WARN_ON(iwl_mvm_has_new_tx_api(mvm))) 407bb49701bSSara Sharon return -EINVAL; 408bb49701bSSara Sharon 40942db09c1SLiad Kaufman spin_lock_bh(&mvm->queue_info_lock); 41042db09c1SLiad Kaufman sta_id = mvm->queue_info[queue].ra_sta_id; 41142db09c1SLiad Kaufman tid_bitmap = mvm->queue_info[queue].tid_bitmap; 41242db09c1SLiad Kaufman spin_unlock_bh(&mvm->queue_info_lock); 41342db09c1SLiad Kaufman 41442db09c1SLiad Kaufman sta = rcu_dereference_protected(mvm->fw_id_to_mac_id[sta_id], 41542db09c1SLiad Kaufman lockdep_is_held(&mvm->mutex)); 41642db09c1SLiad Kaufman 41742db09c1SLiad Kaufman if (WARN_ON_ONCE(IS_ERR_OR_NULL(sta))) 41842db09c1SLiad Kaufman return -EINVAL; 41942db09c1SLiad Kaufman 42042db09c1SLiad Kaufman mvmsta = iwl_mvm_sta_from_mac80211(sta); 42142db09c1SLiad Kaufman 42242db09c1SLiad Kaufman spin_lock_bh(&mvmsta->lock); 42342db09c1SLiad Kaufman for_each_set_bit(tid, &tid_bitmap, IWL_MAX_TID_COUNT + 1) { 42442db09c1SLiad Kaufman if (mvmsta->tid_data[tid].state == IWL_AGG_ON) 42542db09c1SLiad Kaufman agg_tids |= BIT(tid); 42642db09c1SLiad Kaufman } 42742db09c1SLiad Kaufman spin_unlock_bh(&mvmsta->lock); 42842db09c1SLiad Kaufman 42942db09c1SLiad Kaufman return agg_tids; 43042db09c1SLiad Kaufman } 43142db09c1SLiad Kaufman 4329794c64fSLiad Kaufman /* 4339794c64fSLiad Kaufman * Remove a queue from a station's resources. 4349794c64fSLiad Kaufman * Note that this only marks as free. It DOESN'T delete a BA agreement, and 4359794c64fSLiad Kaufman * doesn't disable the queue 4369794c64fSLiad Kaufman */ 4379794c64fSLiad Kaufman static int iwl_mvm_remove_sta_queue_marking(struct iwl_mvm *mvm, int queue) 4389794c64fSLiad Kaufman { 4399794c64fSLiad Kaufman struct ieee80211_sta *sta; 4409794c64fSLiad Kaufman struct iwl_mvm_sta *mvmsta; 4419794c64fSLiad Kaufman unsigned long tid_bitmap; 4429794c64fSLiad Kaufman unsigned long disable_agg_tids = 0; 4439794c64fSLiad Kaufman u8 sta_id; 4449794c64fSLiad Kaufman int tid; 4459794c64fSLiad Kaufman 4469794c64fSLiad Kaufman lockdep_assert_held(&mvm->mutex); 4479794c64fSLiad Kaufman 448bb49701bSSara Sharon if (WARN_ON(iwl_mvm_has_new_tx_api(mvm))) 449bb49701bSSara Sharon return -EINVAL; 450bb49701bSSara Sharon 4519794c64fSLiad Kaufman spin_lock_bh(&mvm->queue_info_lock); 4529794c64fSLiad Kaufman sta_id = mvm->queue_info[queue].ra_sta_id; 4539794c64fSLiad Kaufman tid_bitmap = mvm->queue_info[queue].tid_bitmap; 4549794c64fSLiad Kaufman spin_unlock_bh(&mvm->queue_info_lock); 4559794c64fSLiad Kaufman 4569794c64fSLiad Kaufman rcu_read_lock(); 4579794c64fSLiad Kaufman 4589794c64fSLiad Kaufman sta = rcu_dereference(mvm->fw_id_to_mac_id[sta_id]); 4599794c64fSLiad Kaufman 4609794c64fSLiad Kaufman if (WARN_ON_ONCE(IS_ERR_OR_NULL(sta))) { 4619794c64fSLiad Kaufman rcu_read_unlock(); 4629794c64fSLiad Kaufman return 0; 4639794c64fSLiad Kaufman } 4649794c64fSLiad Kaufman 4659794c64fSLiad Kaufman mvmsta = iwl_mvm_sta_from_mac80211(sta); 4669794c64fSLiad Kaufman 4679794c64fSLiad Kaufman spin_lock_bh(&mvmsta->lock); 46842db09c1SLiad Kaufman /* Unmap MAC queues and TIDs from this queue */ 4699794c64fSLiad Kaufman for_each_set_bit(tid, &tid_bitmap, IWL_MAX_TID_COUNT + 1) { 4709794c64fSLiad Kaufman if (mvmsta->tid_data[tid].state == IWL_AGG_ON) 4719794c64fSLiad Kaufman disable_agg_tids |= BIT(tid); 4726862fceeSSara Sharon mvmsta->tid_data[tid].txq_id = IWL_MVM_INVALID_QUEUE; 4739794c64fSLiad Kaufman } 4749794c64fSLiad Kaufman 47542db09c1SLiad Kaufman mvmsta->tfd_queue_msk &= ~BIT(queue); /* Don't use this queue anymore */ 4769794c64fSLiad Kaufman spin_unlock_bh(&mvmsta->lock); 4779794c64fSLiad Kaufman 4789794c64fSLiad Kaufman rcu_read_unlock(); 4799794c64fSLiad Kaufman 4809794c64fSLiad Kaufman return disable_agg_tids; 4819794c64fSLiad Kaufman } 4829794c64fSLiad Kaufman 48301796ff2SSara Sharon static int iwl_mvm_free_inactive_queue(struct iwl_mvm *mvm, int queue, 48401796ff2SSara Sharon bool same_sta) 48501796ff2SSara Sharon { 48601796ff2SSara Sharon struct iwl_mvm_sta *mvmsta; 48701796ff2SSara Sharon u8 txq_curr_ac, sta_id, tid; 48801796ff2SSara Sharon unsigned long disable_agg_tids = 0; 48901796ff2SSara Sharon int ret; 49001796ff2SSara Sharon 49101796ff2SSara Sharon lockdep_assert_held(&mvm->mutex); 49201796ff2SSara Sharon 493bb49701bSSara Sharon if (WARN_ON(iwl_mvm_has_new_tx_api(mvm))) 494bb49701bSSara Sharon return -EINVAL; 495bb49701bSSara Sharon 49601796ff2SSara Sharon spin_lock_bh(&mvm->queue_info_lock); 49701796ff2SSara Sharon txq_curr_ac = mvm->queue_info[queue].mac80211_ac; 49801796ff2SSara Sharon sta_id = mvm->queue_info[queue].ra_sta_id; 49901796ff2SSara Sharon tid = mvm->queue_info[queue].txq_tid; 50001796ff2SSara Sharon spin_unlock_bh(&mvm->queue_info_lock); 50101796ff2SSara Sharon 50201796ff2SSara Sharon mvmsta = iwl_mvm_sta_from_staid_protected(mvm, sta_id); 503e3df1e4bSSharon Dvir if (WARN_ON(!mvmsta)) 504e3df1e4bSSharon Dvir return -EINVAL; 50501796ff2SSara Sharon 50601796ff2SSara Sharon disable_agg_tids = iwl_mvm_remove_sta_queue_marking(mvm, queue); 50701796ff2SSara Sharon /* Disable the queue */ 50801796ff2SSara Sharon if (disable_agg_tids) 50901796ff2SSara Sharon iwl_mvm_invalidate_sta_queue(mvm, queue, 51001796ff2SSara Sharon disable_agg_tids, false); 51101796ff2SSara Sharon 51201796ff2SSara Sharon ret = iwl_mvm_disable_txq(mvm, queue, 51301796ff2SSara Sharon mvmsta->vif->hw_queue[txq_curr_ac], 51401796ff2SSara Sharon tid, 0); 51501796ff2SSara Sharon if (ret) { 51601796ff2SSara Sharon /* Re-mark the inactive queue as inactive */ 51701796ff2SSara Sharon spin_lock_bh(&mvm->queue_info_lock); 51801796ff2SSara Sharon mvm->queue_info[queue].status = IWL_MVM_QUEUE_INACTIVE; 51901796ff2SSara Sharon spin_unlock_bh(&mvm->queue_info_lock); 52001796ff2SSara Sharon IWL_ERR(mvm, 52101796ff2SSara Sharon "Failed to free inactive queue %d (ret=%d)\n", 52201796ff2SSara Sharon queue, ret); 52301796ff2SSara Sharon 52401796ff2SSara Sharon return ret; 52501796ff2SSara Sharon } 52601796ff2SSara Sharon 52701796ff2SSara Sharon /* If TXQ is allocated to another STA, update removal in FW */ 52801796ff2SSara Sharon if (!same_sta) 52901796ff2SSara Sharon iwl_mvm_invalidate_sta_queue(mvm, queue, 0, true); 53001796ff2SSara Sharon 53101796ff2SSara Sharon return 0; 53201796ff2SSara Sharon } 53301796ff2SSara Sharon 53442db09c1SLiad Kaufman static int iwl_mvm_get_shared_queue(struct iwl_mvm *mvm, 53542db09c1SLiad Kaufman unsigned long tfd_queue_mask, u8 ac) 53642db09c1SLiad Kaufman { 53742db09c1SLiad Kaufman int queue = 0; 53842db09c1SLiad Kaufman u8 ac_to_queue[IEEE80211_NUM_ACS]; 53942db09c1SLiad Kaufman int i; 54042db09c1SLiad Kaufman 54142db09c1SLiad Kaufman lockdep_assert_held(&mvm->queue_info_lock); 542bb49701bSSara Sharon if (WARN_ON(iwl_mvm_has_new_tx_api(mvm))) 543bb49701bSSara Sharon return -EINVAL; 54442db09c1SLiad Kaufman 54542db09c1SLiad Kaufman memset(&ac_to_queue, IEEE80211_INVAL_HW_QUEUE, sizeof(ac_to_queue)); 54642db09c1SLiad Kaufman 54742db09c1SLiad Kaufman /* See what ACs the existing queues for this STA have */ 54842db09c1SLiad Kaufman for_each_set_bit(i, &tfd_queue_mask, IWL_MVM_DQA_MAX_DATA_QUEUE) { 54942db09c1SLiad Kaufman /* Only DATA queues can be shared */ 55042db09c1SLiad Kaufman if (i < IWL_MVM_DQA_MIN_DATA_QUEUE && 55142db09c1SLiad Kaufman i != IWL_MVM_DQA_BSS_CLIENT_QUEUE) 55242db09c1SLiad Kaufman continue; 55342db09c1SLiad Kaufman 5549f9af3d7SLiad Kaufman /* Don't try and take queues being reconfigured */ 5559f9af3d7SLiad Kaufman if (mvm->queue_info[queue].status == 5569f9af3d7SLiad Kaufman IWL_MVM_QUEUE_RECONFIGURING) 5579f9af3d7SLiad Kaufman continue; 5589f9af3d7SLiad Kaufman 55942db09c1SLiad Kaufman ac_to_queue[mvm->queue_info[i].mac80211_ac] = i; 56042db09c1SLiad Kaufman } 56142db09c1SLiad Kaufman 56242db09c1SLiad Kaufman /* 56342db09c1SLiad Kaufman * The queue to share is chosen only from DATA queues as follows (in 56442db09c1SLiad Kaufman * descending priority): 56542db09c1SLiad Kaufman * 1. An AC_BE queue 56642db09c1SLiad Kaufman * 2. Same AC queue 56742db09c1SLiad Kaufman * 3. Highest AC queue that is lower than new AC 56842db09c1SLiad Kaufman * 4. Any existing AC (there always is at least 1 DATA queue) 56942db09c1SLiad Kaufman */ 57042db09c1SLiad Kaufman 57142db09c1SLiad Kaufman /* Priority 1: An AC_BE queue */ 57242db09c1SLiad Kaufman if (ac_to_queue[IEEE80211_AC_BE] != IEEE80211_INVAL_HW_QUEUE) 57342db09c1SLiad Kaufman queue = ac_to_queue[IEEE80211_AC_BE]; 57442db09c1SLiad Kaufman /* Priority 2: Same AC queue */ 57542db09c1SLiad Kaufman else if (ac_to_queue[ac] != IEEE80211_INVAL_HW_QUEUE) 57642db09c1SLiad Kaufman queue = ac_to_queue[ac]; 57742db09c1SLiad Kaufman /* Priority 3a: If new AC is VO and VI exists - use VI */ 57842db09c1SLiad Kaufman else if (ac == IEEE80211_AC_VO && 57942db09c1SLiad Kaufman ac_to_queue[IEEE80211_AC_VI] != IEEE80211_INVAL_HW_QUEUE) 58042db09c1SLiad Kaufman queue = ac_to_queue[IEEE80211_AC_VI]; 58142db09c1SLiad Kaufman /* Priority 3b: No BE so only AC less than the new one is BK */ 58242db09c1SLiad Kaufman else if (ac_to_queue[IEEE80211_AC_BK] != IEEE80211_INVAL_HW_QUEUE) 58342db09c1SLiad Kaufman queue = ac_to_queue[IEEE80211_AC_BK]; 58442db09c1SLiad Kaufman /* Priority 4a: No BE nor BK - use VI if exists */ 58542db09c1SLiad Kaufman else if (ac_to_queue[IEEE80211_AC_VI] != IEEE80211_INVAL_HW_QUEUE) 58642db09c1SLiad Kaufman queue = ac_to_queue[IEEE80211_AC_VI]; 58742db09c1SLiad Kaufman /* Priority 4b: No BE, BK nor VI - use VO if exists */ 58842db09c1SLiad Kaufman else if (ac_to_queue[IEEE80211_AC_VO] != IEEE80211_INVAL_HW_QUEUE) 58942db09c1SLiad Kaufman queue = ac_to_queue[IEEE80211_AC_VO]; 59042db09c1SLiad Kaufman 59142db09c1SLiad Kaufman /* Make sure queue found (or not) is legal */ 5929f9af3d7SLiad Kaufman if (!iwl_mvm_is_dqa_data_queue(mvm, queue) && 5939f9af3d7SLiad Kaufman !iwl_mvm_is_dqa_mgmt_queue(mvm, queue) && 5949f9af3d7SLiad Kaufman (queue != IWL_MVM_DQA_BSS_CLIENT_QUEUE)) { 59542db09c1SLiad Kaufman IWL_ERR(mvm, "No DATA queues available to share\n"); 5969f9af3d7SLiad Kaufman return -ENOSPC; 5979f9af3d7SLiad Kaufman } 5989f9af3d7SLiad Kaufman 5999f9af3d7SLiad Kaufman /* Make sure the queue isn't in the middle of being reconfigured */ 6009f9af3d7SLiad Kaufman if (mvm->queue_info[queue].status == IWL_MVM_QUEUE_RECONFIGURING) { 6019f9af3d7SLiad Kaufman IWL_ERR(mvm, 6029f9af3d7SLiad Kaufman "TXQ %d is in the middle of re-config - try again\n", 6039f9af3d7SLiad Kaufman queue); 6049f9af3d7SLiad Kaufman return -EBUSY; 60542db09c1SLiad Kaufman } 60642db09c1SLiad Kaufman 60742db09c1SLiad Kaufman return queue; 60842db09c1SLiad Kaufman } 60942db09c1SLiad Kaufman 61058f2cc57SLiad Kaufman /* 6119f9af3d7SLiad Kaufman * If a given queue has a higher AC than the TID stream that is being compared 6129f9af3d7SLiad Kaufman * to, the queue needs to be redirected to the lower AC. This function does that 61358f2cc57SLiad Kaufman * in such a case, otherwise - if no redirection required - it does nothing, 61458f2cc57SLiad Kaufman * unless the %force param is true. 61558f2cc57SLiad Kaufman */ 6169f9af3d7SLiad Kaufman int iwl_mvm_scd_queue_redirect(struct iwl_mvm *mvm, int queue, int tid, 61758f2cc57SLiad Kaufman int ac, int ssn, unsigned int wdg_timeout, 61858f2cc57SLiad Kaufman bool force) 61958f2cc57SLiad Kaufman { 62058f2cc57SLiad Kaufman struct iwl_scd_txq_cfg_cmd cmd = { 62158f2cc57SLiad Kaufman .scd_queue = queue, 622f7c692deSLiad Kaufman .action = SCD_CFG_DISABLE_QUEUE, 62358f2cc57SLiad Kaufman }; 62458f2cc57SLiad Kaufman bool shared_queue; 62558f2cc57SLiad Kaufman unsigned long mq; 62658f2cc57SLiad Kaufman int ret; 62758f2cc57SLiad Kaufman 628bb49701bSSara Sharon if (WARN_ON(iwl_mvm_has_new_tx_api(mvm))) 629bb49701bSSara Sharon return -EINVAL; 630bb49701bSSara Sharon 63158f2cc57SLiad Kaufman /* 63258f2cc57SLiad Kaufman * If the AC is lower than current one - FIFO needs to be redirected to 63358f2cc57SLiad Kaufman * the lowest one of the streams in the queue. Check if this is needed 63458f2cc57SLiad Kaufman * here. 63558f2cc57SLiad Kaufman * Notice that the enum ieee80211_ac_numbers is "flipped", so BK is with 63658f2cc57SLiad Kaufman * value 3 and VO with value 0, so to check if ac X is lower than ac Y 63758f2cc57SLiad Kaufman * we need to check if the numerical value of X is LARGER than of Y. 63858f2cc57SLiad Kaufman */ 63958f2cc57SLiad Kaufman spin_lock_bh(&mvm->queue_info_lock); 64058f2cc57SLiad Kaufman if (ac <= mvm->queue_info[queue].mac80211_ac && !force) { 64158f2cc57SLiad Kaufman spin_unlock_bh(&mvm->queue_info_lock); 64258f2cc57SLiad Kaufman 64358f2cc57SLiad Kaufman IWL_DEBUG_TX_QUEUES(mvm, 64458f2cc57SLiad Kaufman "No redirection needed on TXQ #%d\n", 64558f2cc57SLiad Kaufman queue); 64658f2cc57SLiad Kaufman return 0; 64758f2cc57SLiad Kaufman } 64858f2cc57SLiad Kaufman 64958f2cc57SLiad Kaufman cmd.sta_id = mvm->queue_info[queue].ra_sta_id; 65058f2cc57SLiad Kaufman cmd.tx_fifo = iwl_mvm_ac_to_tx_fifo[mvm->queue_info[queue].mac80211_ac]; 651edbe961cSLiad Kaufman cmd.tid = mvm->queue_info[queue].txq_tid; 65234e10860SSara Sharon mq = mvm->hw_queue_to_mac80211[queue]; 65358f2cc57SLiad Kaufman shared_queue = (mvm->queue_info[queue].hw_queue_refcount > 1); 65458f2cc57SLiad Kaufman spin_unlock_bh(&mvm->queue_info_lock); 65558f2cc57SLiad Kaufman 6569f9af3d7SLiad Kaufman IWL_DEBUG_TX_QUEUES(mvm, "Redirecting TXQ #%d to FIFO #%d\n", 65758f2cc57SLiad Kaufman queue, iwl_mvm_ac_to_tx_fifo[ac]); 65858f2cc57SLiad Kaufman 65958f2cc57SLiad Kaufman /* Stop MAC queues and wait for this queue to empty */ 66058f2cc57SLiad Kaufman iwl_mvm_stop_mac_queues(mvm, mq); 661a1a57877SSara Sharon ret = iwl_trans_wait_tx_queues_empty(mvm->trans, BIT(queue)); 66258f2cc57SLiad Kaufman if (ret) { 66358f2cc57SLiad Kaufman IWL_ERR(mvm, "Error draining queue %d before reconfig\n", 66458f2cc57SLiad Kaufman queue); 66558f2cc57SLiad Kaufman ret = -EIO; 66658f2cc57SLiad Kaufman goto out; 66758f2cc57SLiad Kaufman } 66858f2cc57SLiad Kaufman 66958f2cc57SLiad Kaufman /* Before redirecting the queue we need to de-activate it */ 67058f2cc57SLiad Kaufman iwl_trans_txq_disable(mvm->trans, queue, false); 67158f2cc57SLiad Kaufman ret = iwl_mvm_send_cmd_pdu(mvm, SCD_QUEUE_CFG, 0, sizeof(cmd), &cmd); 67258f2cc57SLiad Kaufman if (ret) 67358f2cc57SLiad Kaufman IWL_ERR(mvm, "Failed SCD disable TXQ %d (ret=%d)\n", queue, 67458f2cc57SLiad Kaufman ret); 67558f2cc57SLiad Kaufman 67658f2cc57SLiad Kaufman /* Make sure the SCD wrptr is correctly set before reconfiguring */ 677ca3b9c6bSSara Sharon iwl_trans_txq_enable_cfg(mvm->trans, queue, ssn, NULL, wdg_timeout); 67858f2cc57SLiad Kaufman 679edbe961cSLiad Kaufman /* Update the TID "owner" of the queue */ 680edbe961cSLiad Kaufman spin_lock_bh(&mvm->queue_info_lock); 681edbe961cSLiad Kaufman mvm->queue_info[queue].txq_tid = tid; 682edbe961cSLiad Kaufman spin_unlock_bh(&mvm->queue_info_lock); 683edbe961cSLiad Kaufman 68458f2cc57SLiad Kaufman /* TODO: Work-around SCD bug when moving back by multiples of 0x40 */ 68558f2cc57SLiad Kaufman 68658f2cc57SLiad Kaufman /* Redirect to lower AC */ 68758f2cc57SLiad Kaufman iwl_mvm_reconfig_scd(mvm, queue, iwl_mvm_ac_to_tx_fifo[ac], 68858f2cc57SLiad Kaufman cmd.sta_id, tid, LINK_QUAL_AGG_FRAME_LIMIT_DEF, 68958f2cc57SLiad Kaufman ssn); 69058f2cc57SLiad Kaufman 69158f2cc57SLiad Kaufman /* Update AC marking of the queue */ 69258f2cc57SLiad Kaufman spin_lock_bh(&mvm->queue_info_lock); 69358f2cc57SLiad Kaufman mvm->queue_info[queue].mac80211_ac = ac; 69458f2cc57SLiad Kaufman spin_unlock_bh(&mvm->queue_info_lock); 69558f2cc57SLiad Kaufman 69658f2cc57SLiad Kaufman /* 69758f2cc57SLiad Kaufman * Mark queue as shared in transport if shared 69858f2cc57SLiad Kaufman * Note this has to be done after queue enablement because enablement 69958f2cc57SLiad Kaufman * can also set this value, and there is no indication there to shared 70058f2cc57SLiad Kaufman * queues 70158f2cc57SLiad Kaufman */ 70258f2cc57SLiad Kaufman if (shared_queue) 70358f2cc57SLiad Kaufman iwl_trans_txq_set_shared_mode(mvm->trans, queue, true); 70458f2cc57SLiad Kaufman 70558f2cc57SLiad Kaufman out: 70658f2cc57SLiad Kaufman /* Continue using the MAC queues */ 70758f2cc57SLiad Kaufman iwl_mvm_start_mac_queues(mvm, mq); 70858f2cc57SLiad Kaufman 70958f2cc57SLiad Kaufman return ret; 71058f2cc57SLiad Kaufman } 71158f2cc57SLiad Kaufman 712310181ecSSara Sharon static int iwl_mvm_sta_alloc_queue_tvqm(struct iwl_mvm *mvm, 713310181ecSSara Sharon struct ieee80211_sta *sta, u8 ac, 714310181ecSSara Sharon int tid) 715310181ecSSara Sharon { 716310181ecSSara Sharon struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta); 717310181ecSSara Sharon unsigned int wdg_timeout = 718310181ecSSara Sharon iwl_mvm_get_wd_timeout(mvm, mvmsta->vif, false, false); 719310181ecSSara Sharon u8 mac_queue = mvmsta->vif->hw_queue[ac]; 720310181ecSSara Sharon int queue = -1; 721310181ecSSara Sharon 722310181ecSSara Sharon lockdep_assert_held(&mvm->mutex); 723310181ecSSara Sharon 724310181ecSSara Sharon IWL_DEBUG_TX_QUEUES(mvm, 725310181ecSSara Sharon "Allocating queue for sta %d on tid %d\n", 726310181ecSSara Sharon mvmsta->sta_id, tid); 727310181ecSSara Sharon queue = iwl_mvm_tvqm_enable_txq(mvm, mac_queue, mvmsta->sta_id, tid, 728310181ecSSara Sharon wdg_timeout); 729310181ecSSara Sharon if (queue < 0) 730310181ecSSara Sharon return queue; 731310181ecSSara Sharon 732310181ecSSara Sharon IWL_DEBUG_TX_QUEUES(mvm, "Allocated queue is %d\n", queue); 733310181ecSSara Sharon 734310181ecSSara Sharon spin_lock_bh(&mvmsta->lock); 735310181ecSSara Sharon mvmsta->tid_data[tid].txq_id = queue; 736310181ecSSara Sharon mvmsta->tid_data[tid].is_tid_active = true; 737310181ecSSara Sharon mvmsta->tfd_queue_msk |= BIT(queue); 738310181ecSSara Sharon spin_unlock_bh(&mvmsta->lock); 739310181ecSSara Sharon 740310181ecSSara Sharon return 0; 741310181ecSSara Sharon } 742310181ecSSara Sharon 74324afba76SLiad Kaufman static int iwl_mvm_sta_alloc_queue(struct iwl_mvm *mvm, 74424afba76SLiad Kaufman struct ieee80211_sta *sta, u8 ac, int tid, 74524afba76SLiad Kaufman struct ieee80211_hdr *hdr) 74624afba76SLiad Kaufman { 74724afba76SLiad Kaufman struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta); 74824afba76SLiad Kaufman struct iwl_trans_txq_scd_cfg cfg = { 74924afba76SLiad Kaufman .fifo = iwl_mvm_ac_to_tx_fifo[ac], 75024afba76SLiad Kaufman .sta_id = mvmsta->sta_id, 75124afba76SLiad Kaufman .tid = tid, 75224afba76SLiad Kaufman .frame_limit = IWL_FRAME_LIMIT, 75324afba76SLiad Kaufman }; 75424afba76SLiad Kaufman unsigned int wdg_timeout = 75524afba76SLiad Kaufman iwl_mvm_get_wd_timeout(mvm, mvmsta->vif, false, false); 75624afba76SLiad Kaufman u8 mac_queue = mvmsta->vif->hw_queue[ac]; 75724afba76SLiad Kaufman int queue = -1; 75801796ff2SSara Sharon bool using_inactive_queue = false, same_sta = false; 7599794c64fSLiad Kaufman unsigned long disable_agg_tids = 0; 7609794c64fSLiad Kaufman enum iwl_mvm_agg_state queue_state; 76142db09c1SLiad Kaufman bool shared_queue = false; 76224afba76SLiad Kaufman int ssn; 76342db09c1SLiad Kaufman unsigned long tfd_queue_mask; 764cf961e16SLiad Kaufman int ret; 76524afba76SLiad Kaufman 76624afba76SLiad Kaufman lockdep_assert_held(&mvm->mutex); 76724afba76SLiad Kaufman 768310181ecSSara Sharon if (iwl_mvm_has_new_tx_api(mvm)) 769310181ecSSara Sharon return iwl_mvm_sta_alloc_queue_tvqm(mvm, sta, ac, tid); 770310181ecSSara Sharon 77142db09c1SLiad Kaufman spin_lock_bh(&mvmsta->lock); 77242db09c1SLiad Kaufman tfd_queue_mask = mvmsta->tfd_queue_msk; 77342db09c1SLiad Kaufman spin_unlock_bh(&mvmsta->lock); 77442db09c1SLiad Kaufman 775d2515a99SLiad Kaufman spin_lock_bh(&mvm->queue_info_lock); 77624afba76SLiad Kaufman 77724afba76SLiad Kaufman /* 77824afba76SLiad Kaufman * Non-QoS, QoS NDP and MGMT frames should go to a MGMT queue, if one 77924afba76SLiad Kaufman * exists 78024afba76SLiad Kaufman */ 78124afba76SLiad Kaufman if (!ieee80211_is_data_qos(hdr->frame_control) || 78224afba76SLiad Kaufman ieee80211_is_qos_nullfunc(hdr->frame_control)) { 7839794c64fSLiad Kaufman queue = iwl_mvm_find_free_queue(mvm, mvmsta->sta_id, 7849794c64fSLiad Kaufman IWL_MVM_DQA_MIN_MGMT_QUEUE, 78524afba76SLiad Kaufman IWL_MVM_DQA_MAX_MGMT_QUEUE); 78624afba76SLiad Kaufman if (queue >= IWL_MVM_DQA_MIN_MGMT_QUEUE) 78724afba76SLiad Kaufman IWL_DEBUG_TX_QUEUES(mvm, "Found free MGMT queue #%d\n", 78824afba76SLiad Kaufman queue); 78924afba76SLiad Kaufman 79024afba76SLiad Kaufman /* If no such queue is found, we'll use a DATA queue instead */ 79124afba76SLiad Kaufman } 79224afba76SLiad Kaufman 7939794c64fSLiad Kaufman if ((queue < 0 && mvmsta->reserved_queue != IEEE80211_INVAL_HW_QUEUE) && 7949794c64fSLiad Kaufman (mvm->queue_info[mvmsta->reserved_queue].status == 7959794c64fSLiad Kaufman IWL_MVM_QUEUE_RESERVED || 7969794c64fSLiad Kaufman mvm->queue_info[mvmsta->reserved_queue].status == 7979794c64fSLiad Kaufman IWL_MVM_QUEUE_INACTIVE)) { 79824afba76SLiad Kaufman queue = mvmsta->reserved_queue; 7999794c64fSLiad Kaufman mvm->queue_info[queue].reserved = true; 80024afba76SLiad Kaufman IWL_DEBUG_TX_QUEUES(mvm, "Using reserved queue #%d\n", queue); 80124afba76SLiad Kaufman } 80224afba76SLiad Kaufman 80324afba76SLiad Kaufman if (queue < 0) 8049794c64fSLiad Kaufman queue = iwl_mvm_find_free_queue(mvm, mvmsta->sta_id, 8059794c64fSLiad Kaufman IWL_MVM_DQA_MIN_DATA_QUEUE, 80624afba76SLiad Kaufman IWL_MVM_DQA_MAX_DATA_QUEUE); 807cf961e16SLiad Kaufman 808cf961e16SLiad Kaufman /* 8099794c64fSLiad Kaufman * Check if this queue is already allocated but inactive. 8109794c64fSLiad Kaufman * In such a case, we'll need to first free this queue before enabling 8119794c64fSLiad Kaufman * it again, so we'll mark it as reserved to make sure no new traffic 8129794c64fSLiad Kaufman * arrives on it 8139794c64fSLiad Kaufman */ 8149794c64fSLiad Kaufman if (queue > 0 && 8159794c64fSLiad Kaufman mvm->queue_info[queue].status == IWL_MVM_QUEUE_INACTIVE) { 8169794c64fSLiad Kaufman mvm->queue_info[queue].status = IWL_MVM_QUEUE_RESERVED; 8179794c64fSLiad Kaufman using_inactive_queue = true; 81801796ff2SSara Sharon same_sta = mvm->queue_info[queue].ra_sta_id == mvmsta->sta_id; 8199794c64fSLiad Kaufman IWL_DEBUG_TX_QUEUES(mvm, 8209794c64fSLiad Kaufman "Re-assigning TXQ %d: sta_id=%d, tid=%d\n", 8219794c64fSLiad Kaufman queue, mvmsta->sta_id, tid); 8229794c64fSLiad Kaufman } 8239794c64fSLiad Kaufman 82442db09c1SLiad Kaufman /* No free queue - we'll have to share */ 82542db09c1SLiad Kaufman if (queue <= 0) { 82642db09c1SLiad Kaufman queue = iwl_mvm_get_shared_queue(mvm, tfd_queue_mask, ac); 82742db09c1SLiad Kaufman if (queue > 0) { 82842db09c1SLiad Kaufman shared_queue = true; 82942db09c1SLiad Kaufman mvm->queue_info[queue].status = IWL_MVM_QUEUE_SHARED; 83042db09c1SLiad Kaufman } 83142db09c1SLiad Kaufman } 83242db09c1SLiad Kaufman 8339794c64fSLiad Kaufman /* 834cf961e16SLiad Kaufman * Mark TXQ as ready, even though it hasn't been fully configured yet, 835cf961e16SLiad Kaufman * to make sure no one else takes it. 836cf961e16SLiad Kaufman * This will allow avoiding re-acquiring the lock at the end of the 837cf961e16SLiad Kaufman * configuration. On error we'll mark it back as free. 838cf961e16SLiad Kaufman */ 83942db09c1SLiad Kaufman if ((queue > 0) && !shared_queue) 840cf961e16SLiad Kaufman mvm->queue_info[queue].status = IWL_MVM_QUEUE_READY; 84124afba76SLiad Kaufman 842d2515a99SLiad Kaufman spin_unlock_bh(&mvm->queue_info_lock); 84324afba76SLiad Kaufman 84442db09c1SLiad Kaufman /* This shouldn't happen - out of queues */ 84542db09c1SLiad Kaufman if (WARN_ON(queue <= 0)) { 84642db09c1SLiad Kaufman IWL_ERR(mvm, "No available queues for tid %d on sta_id %d\n", 84742db09c1SLiad Kaufman tid, cfg.sta_id); 8489f9af3d7SLiad Kaufman return queue; 84942db09c1SLiad Kaufman } 85024afba76SLiad Kaufman 85124afba76SLiad Kaufman /* 85224afba76SLiad Kaufman * Actual en/disablement of aggregations is through the ADD_STA HCMD, 85324afba76SLiad Kaufman * but for configuring the SCD to send A-MPDUs we need to mark the queue 85424afba76SLiad Kaufman * as aggregatable. 85524afba76SLiad Kaufman * Mark all DATA queues as allowing to be aggregated at some point 85624afba76SLiad Kaufman */ 857d5216a28SLiad Kaufman cfg.aggregate = (queue >= IWL_MVM_DQA_MIN_DATA_QUEUE || 858d5216a28SLiad Kaufman queue == IWL_MVM_DQA_BSS_CLIENT_QUEUE); 85924afba76SLiad Kaufman 8609794c64fSLiad Kaufman /* 8619794c64fSLiad Kaufman * If this queue was previously inactive (idle) - we need to free it 8629794c64fSLiad Kaufman * first 8639794c64fSLiad Kaufman */ 8649794c64fSLiad Kaufman if (using_inactive_queue) { 86501796ff2SSara Sharon ret = iwl_mvm_free_inactive_queue(mvm, queue, same_sta); 86601796ff2SSara Sharon if (ret) 8679794c64fSLiad Kaufman return ret; 8689794c64fSLiad Kaufman } 8698d98ae6eSLiad Kaufman 87042db09c1SLiad Kaufman IWL_DEBUG_TX_QUEUES(mvm, 87142db09c1SLiad Kaufman "Allocating %squeue #%d to sta %d on tid %d\n", 87242db09c1SLiad Kaufman shared_queue ? "shared " : "", queue, 87342db09c1SLiad Kaufman mvmsta->sta_id, tid); 87442db09c1SLiad Kaufman 87542db09c1SLiad Kaufman if (shared_queue) { 87642db09c1SLiad Kaufman /* Disable any open aggs on this queue */ 87742db09c1SLiad Kaufman disable_agg_tids = iwl_mvm_get_queue_agg_tids(mvm, queue); 87842db09c1SLiad Kaufman 87942db09c1SLiad Kaufman if (disable_agg_tids) { 88042db09c1SLiad Kaufman IWL_DEBUG_TX_QUEUES(mvm, "Disabling aggs on queue %d\n", 88142db09c1SLiad Kaufman queue); 88242db09c1SLiad Kaufman iwl_mvm_invalidate_sta_queue(mvm, queue, 88342db09c1SLiad Kaufman disable_agg_tids, false); 88442db09c1SLiad Kaufman } 88542db09c1SLiad Kaufman } 88624afba76SLiad Kaufman 88724afba76SLiad Kaufman ssn = IEEE80211_SEQ_TO_SN(le16_to_cpu(hdr->seq_ctrl)); 88824afba76SLiad Kaufman iwl_mvm_enable_txq(mvm, queue, mac_queue, ssn, &cfg, 88924afba76SLiad Kaufman wdg_timeout); 89024afba76SLiad Kaufman 89158f2cc57SLiad Kaufman /* 89258f2cc57SLiad Kaufman * Mark queue as shared in transport if shared 89358f2cc57SLiad Kaufman * Note this has to be done after queue enablement because enablement 89458f2cc57SLiad Kaufman * can also set this value, and there is no indication there to shared 89558f2cc57SLiad Kaufman * queues 89658f2cc57SLiad Kaufman */ 89758f2cc57SLiad Kaufman if (shared_queue) 89858f2cc57SLiad Kaufman iwl_trans_txq_set_shared_mode(mvm->trans, queue, true); 89958f2cc57SLiad Kaufman 90024afba76SLiad Kaufman spin_lock_bh(&mvmsta->lock); 90124afba76SLiad Kaufman mvmsta->tid_data[tid].txq_id = queue; 9029794c64fSLiad Kaufman mvmsta->tid_data[tid].is_tid_active = true; 90324afba76SLiad Kaufman mvmsta->tfd_queue_msk |= BIT(queue); 9049794c64fSLiad Kaufman queue_state = mvmsta->tid_data[tid].state; 90524afba76SLiad Kaufman 90624afba76SLiad Kaufman if (mvmsta->reserved_queue == queue) 90724afba76SLiad Kaufman mvmsta->reserved_queue = IEEE80211_INVAL_HW_QUEUE; 90824afba76SLiad Kaufman spin_unlock_bh(&mvmsta->lock); 90924afba76SLiad Kaufman 91042db09c1SLiad Kaufman if (!shared_queue) { 911cf961e16SLiad Kaufman ret = iwl_mvm_sta_send_to_fw(mvm, sta, true, STA_MODIFY_QUEUES); 912cf961e16SLiad Kaufman if (ret) 913cf961e16SLiad Kaufman goto out_err; 914cf961e16SLiad Kaufman 9159794c64fSLiad Kaufman /* If we need to re-enable aggregations... */ 91642db09c1SLiad Kaufman if (queue_state == IWL_AGG_ON) { 9179794c64fSLiad Kaufman ret = iwl_mvm_sta_tx_agg(mvm, sta, tid, queue, true); 91842db09c1SLiad Kaufman if (ret) 91942db09c1SLiad Kaufman goto out_err; 92042db09c1SLiad Kaufman } 92158f2cc57SLiad Kaufman } else { 92258f2cc57SLiad Kaufman /* Redirect queue, if needed */ 92358f2cc57SLiad Kaufman ret = iwl_mvm_scd_queue_redirect(mvm, queue, tid, ac, ssn, 92458f2cc57SLiad Kaufman wdg_timeout, false); 92558f2cc57SLiad Kaufman if (ret) 92658f2cc57SLiad Kaufman goto out_err; 92742db09c1SLiad Kaufman } 9289794c64fSLiad Kaufman 92942db09c1SLiad Kaufman return 0; 930cf961e16SLiad Kaufman 931cf961e16SLiad Kaufman out_err: 932cf961e16SLiad Kaufman iwl_mvm_disable_txq(mvm, queue, mac_queue, tid, 0); 933cf961e16SLiad Kaufman 934cf961e16SLiad Kaufman return ret; 93524afba76SLiad Kaufman } 93624afba76SLiad Kaufman 93719aefa45SLiad Kaufman static void iwl_mvm_change_queue_owner(struct iwl_mvm *mvm, int queue) 93819aefa45SLiad Kaufman { 93919aefa45SLiad Kaufman struct iwl_scd_txq_cfg_cmd cmd = { 94019aefa45SLiad Kaufman .scd_queue = queue, 94119aefa45SLiad Kaufman .action = SCD_CFG_UPDATE_QUEUE_TID, 94219aefa45SLiad Kaufman }; 94319aefa45SLiad Kaufman int tid; 94419aefa45SLiad Kaufman unsigned long tid_bitmap; 94519aefa45SLiad Kaufman int ret; 94619aefa45SLiad Kaufman 94719aefa45SLiad Kaufman lockdep_assert_held(&mvm->mutex); 94819aefa45SLiad Kaufman 949bb49701bSSara Sharon if (WARN_ON(iwl_mvm_has_new_tx_api(mvm))) 950bb49701bSSara Sharon return; 951bb49701bSSara Sharon 95219aefa45SLiad Kaufman spin_lock_bh(&mvm->queue_info_lock); 95319aefa45SLiad Kaufman tid_bitmap = mvm->queue_info[queue].tid_bitmap; 95419aefa45SLiad Kaufman spin_unlock_bh(&mvm->queue_info_lock); 95519aefa45SLiad Kaufman 95619aefa45SLiad Kaufman if (WARN(!tid_bitmap, "TXQ %d has no tids assigned to it\n", queue)) 95719aefa45SLiad Kaufman return; 95819aefa45SLiad Kaufman 95919aefa45SLiad Kaufman /* Find any TID for queue */ 96019aefa45SLiad Kaufman tid = find_first_bit(&tid_bitmap, IWL_MAX_TID_COUNT + 1); 96119aefa45SLiad Kaufman cmd.tid = tid; 96219aefa45SLiad Kaufman cmd.tx_fifo = iwl_mvm_ac_to_tx_fifo[tid_to_mac80211_ac[tid]]; 96319aefa45SLiad Kaufman 96419aefa45SLiad Kaufman ret = iwl_mvm_send_cmd_pdu(mvm, SCD_QUEUE_CFG, 0, sizeof(cmd), &cmd); 965341ca402SLiad Kaufman if (ret) { 96619aefa45SLiad Kaufman IWL_ERR(mvm, "Failed to update owner of TXQ %d (ret=%d)\n", 96719aefa45SLiad Kaufman queue, ret); 968341ca402SLiad Kaufman return; 969341ca402SLiad Kaufman } 970341ca402SLiad Kaufman 971341ca402SLiad Kaufman spin_lock_bh(&mvm->queue_info_lock); 972341ca402SLiad Kaufman mvm->queue_info[queue].txq_tid = tid; 973341ca402SLiad Kaufman spin_unlock_bh(&mvm->queue_info_lock); 97419aefa45SLiad Kaufman IWL_DEBUG_TX_QUEUES(mvm, "Changed TXQ %d ownership to tid %d\n", 97519aefa45SLiad Kaufman queue, tid); 97619aefa45SLiad Kaufman } 97719aefa45SLiad Kaufman 9789f9af3d7SLiad Kaufman static void iwl_mvm_unshare_queue(struct iwl_mvm *mvm, int queue) 9799f9af3d7SLiad Kaufman { 9809f9af3d7SLiad Kaufman struct ieee80211_sta *sta; 9819f9af3d7SLiad Kaufman struct iwl_mvm_sta *mvmsta; 9829f9af3d7SLiad Kaufman s8 sta_id; 9839f9af3d7SLiad Kaufman int tid = -1; 9849f9af3d7SLiad Kaufman unsigned long tid_bitmap; 9859f9af3d7SLiad Kaufman unsigned int wdg_timeout; 9869f9af3d7SLiad Kaufman int ssn; 9879f9af3d7SLiad Kaufman int ret = true; 9889f9af3d7SLiad Kaufman 989bb49701bSSara Sharon /* queue sharing is disabled on new TX path */ 990bb49701bSSara Sharon if (WARN_ON(iwl_mvm_has_new_tx_api(mvm))) 991bb49701bSSara Sharon return; 992bb49701bSSara Sharon 9939f9af3d7SLiad Kaufman lockdep_assert_held(&mvm->mutex); 9949f9af3d7SLiad Kaufman 9959f9af3d7SLiad Kaufman spin_lock_bh(&mvm->queue_info_lock); 9969f9af3d7SLiad Kaufman sta_id = mvm->queue_info[queue].ra_sta_id; 9979f9af3d7SLiad Kaufman tid_bitmap = mvm->queue_info[queue].tid_bitmap; 9989f9af3d7SLiad Kaufman spin_unlock_bh(&mvm->queue_info_lock); 9999f9af3d7SLiad Kaufman 10009f9af3d7SLiad Kaufman /* Find TID for queue, and make sure it is the only one on the queue */ 10019f9af3d7SLiad Kaufman tid = find_first_bit(&tid_bitmap, IWL_MAX_TID_COUNT + 1); 10029f9af3d7SLiad Kaufman if (tid_bitmap != BIT(tid)) { 10039f9af3d7SLiad Kaufman IWL_ERR(mvm, "Failed to unshare q %d, active tids=0x%lx\n", 10049f9af3d7SLiad Kaufman queue, tid_bitmap); 10059f9af3d7SLiad Kaufman return; 10069f9af3d7SLiad Kaufman } 10079f9af3d7SLiad Kaufman 10089f9af3d7SLiad Kaufman IWL_DEBUG_TX_QUEUES(mvm, "Unsharing TXQ %d, keeping tid %d\n", queue, 10099f9af3d7SLiad Kaufman tid); 10109f9af3d7SLiad Kaufman 10119f9af3d7SLiad Kaufman sta = rcu_dereference_protected(mvm->fw_id_to_mac_id[sta_id], 10129f9af3d7SLiad Kaufman lockdep_is_held(&mvm->mutex)); 10139f9af3d7SLiad Kaufman 10149f9af3d7SLiad Kaufman if (WARN_ON_ONCE(IS_ERR_OR_NULL(sta))) 10159f9af3d7SLiad Kaufman return; 10169f9af3d7SLiad Kaufman 10179f9af3d7SLiad Kaufman mvmsta = iwl_mvm_sta_from_mac80211(sta); 10189f9af3d7SLiad Kaufman wdg_timeout = iwl_mvm_get_wd_timeout(mvm, mvmsta->vif, false, false); 10199f9af3d7SLiad Kaufman 10209f9af3d7SLiad Kaufman ssn = IEEE80211_SEQ_TO_SN(mvmsta->tid_data[tid].seq_number); 10219f9af3d7SLiad Kaufman 10229f9af3d7SLiad Kaufman ret = iwl_mvm_scd_queue_redirect(mvm, queue, tid, 10239f9af3d7SLiad Kaufman tid_to_mac80211_ac[tid], ssn, 10249f9af3d7SLiad Kaufman wdg_timeout, true); 10259f9af3d7SLiad Kaufman if (ret) { 10269f9af3d7SLiad Kaufman IWL_ERR(mvm, "Failed to redirect TXQ %d\n", queue); 10279f9af3d7SLiad Kaufman return; 10289f9af3d7SLiad Kaufman } 10299f9af3d7SLiad Kaufman 10309f9af3d7SLiad Kaufman /* If aggs should be turned back on - do it */ 10319f9af3d7SLiad Kaufman if (mvmsta->tid_data[tid].state == IWL_AGG_ON) { 10329cd70e80SEmmanuel Grumbach struct iwl_mvm_add_sta_cmd cmd = {0}; 10339f9af3d7SLiad Kaufman 10349f9af3d7SLiad Kaufman mvmsta->tid_disable_agg &= ~BIT(tid); 10359f9af3d7SLiad Kaufman 10369f9af3d7SLiad Kaufman cmd.mac_id_n_color = cpu_to_le32(mvmsta->mac_id_n_color); 10379f9af3d7SLiad Kaufman cmd.sta_id = mvmsta->sta_id; 10389f9af3d7SLiad Kaufman cmd.add_modify = STA_MODE_MODIFY; 10399f9af3d7SLiad Kaufman cmd.modify_mask = STA_MODIFY_TID_DISABLE_TX; 10409f9af3d7SLiad Kaufman cmd.tfd_queue_msk = cpu_to_le32(mvmsta->tfd_queue_msk); 10419f9af3d7SLiad Kaufman cmd.tid_disable_tx = cpu_to_le16(mvmsta->tid_disable_agg); 10429f9af3d7SLiad Kaufman 10439f9af3d7SLiad Kaufman ret = iwl_mvm_send_cmd_pdu(mvm, ADD_STA, CMD_ASYNC, 10449f9af3d7SLiad Kaufman iwl_mvm_add_sta_cmd_size(mvm), &cmd); 10459f9af3d7SLiad Kaufman if (!ret) { 10469f9af3d7SLiad Kaufman IWL_DEBUG_TX_QUEUES(mvm, 10479f9af3d7SLiad Kaufman "TXQ #%d is now aggregated again\n", 10489f9af3d7SLiad Kaufman queue); 10499f9af3d7SLiad Kaufman 10509f9af3d7SLiad Kaufman /* Mark queue intenally as aggregating again */ 10519f9af3d7SLiad Kaufman iwl_trans_txq_set_shared_mode(mvm->trans, queue, false); 10529f9af3d7SLiad Kaufman } 10539f9af3d7SLiad Kaufman } 10549f9af3d7SLiad Kaufman 10559f9af3d7SLiad Kaufman spin_lock_bh(&mvm->queue_info_lock); 10569f9af3d7SLiad Kaufman mvm->queue_info[queue].status = IWL_MVM_QUEUE_READY; 10579f9af3d7SLiad Kaufman spin_unlock_bh(&mvm->queue_info_lock); 10589f9af3d7SLiad Kaufman } 10599f9af3d7SLiad Kaufman 106024afba76SLiad Kaufman static inline u8 iwl_mvm_tid_to_ac_queue(int tid) 106124afba76SLiad Kaufman { 106224afba76SLiad Kaufman if (tid == IWL_MAX_TID_COUNT) 106324afba76SLiad Kaufman return IEEE80211_AC_VO; /* MGMT */ 106424afba76SLiad Kaufman 106524afba76SLiad Kaufman return tid_to_mac80211_ac[tid]; 106624afba76SLiad Kaufman } 106724afba76SLiad Kaufman 106824afba76SLiad Kaufman static void iwl_mvm_tx_deferred_stream(struct iwl_mvm *mvm, 106924afba76SLiad Kaufman struct ieee80211_sta *sta, int tid) 107024afba76SLiad Kaufman { 107124afba76SLiad Kaufman struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta); 107224afba76SLiad Kaufman struct iwl_mvm_tid_data *tid_data = &mvmsta->tid_data[tid]; 107324afba76SLiad Kaufman struct sk_buff *skb; 107424afba76SLiad Kaufman struct ieee80211_hdr *hdr; 107524afba76SLiad Kaufman struct sk_buff_head deferred_tx; 107624afba76SLiad Kaufman u8 mac_queue; 107724afba76SLiad Kaufman bool no_queue = false; /* Marks if there is a problem with the queue */ 107824afba76SLiad Kaufman u8 ac; 107924afba76SLiad Kaufman 108024afba76SLiad Kaufman lockdep_assert_held(&mvm->mutex); 108124afba76SLiad Kaufman 108224afba76SLiad Kaufman skb = skb_peek(&tid_data->deferred_tx_frames); 108324afba76SLiad Kaufman if (!skb) 108424afba76SLiad Kaufman return; 108524afba76SLiad Kaufman hdr = (void *)skb->data; 108624afba76SLiad Kaufman 108724afba76SLiad Kaufman ac = iwl_mvm_tid_to_ac_queue(tid); 108824afba76SLiad Kaufman mac_queue = IEEE80211_SKB_CB(skb)->hw_queue; 108924afba76SLiad Kaufman 10906862fceeSSara Sharon if (tid_data->txq_id == IWL_MVM_INVALID_QUEUE && 109124afba76SLiad Kaufman iwl_mvm_sta_alloc_queue(mvm, sta, ac, tid, hdr)) { 109224afba76SLiad Kaufman IWL_ERR(mvm, 109324afba76SLiad Kaufman "Can't alloc TXQ for sta %d tid %d - dropping frame\n", 109424afba76SLiad Kaufman mvmsta->sta_id, tid); 109524afba76SLiad Kaufman 109624afba76SLiad Kaufman /* 109724afba76SLiad Kaufman * Mark queue as problematic so later the deferred traffic is 109824afba76SLiad Kaufman * freed, as we can do nothing with it 109924afba76SLiad Kaufman */ 110024afba76SLiad Kaufman no_queue = true; 110124afba76SLiad Kaufman } 110224afba76SLiad Kaufman 110324afba76SLiad Kaufman __skb_queue_head_init(&deferred_tx); 110424afba76SLiad Kaufman 1105d2515a99SLiad Kaufman /* Disable bottom-halves when entering TX path */ 1106d2515a99SLiad Kaufman local_bh_disable(); 110724afba76SLiad Kaufman spin_lock(&mvmsta->lock); 110824afba76SLiad Kaufman skb_queue_splice_init(&tid_data->deferred_tx_frames, &deferred_tx); 1109ad5de737SLiad Kaufman mvmsta->deferred_traffic_tid_map &= ~BIT(tid); 111024afba76SLiad Kaufman spin_unlock(&mvmsta->lock); 111124afba76SLiad Kaufman 111224afba76SLiad Kaufman while ((skb = __skb_dequeue(&deferred_tx))) 111324afba76SLiad Kaufman if (no_queue || iwl_mvm_tx_skb(mvm, skb, sta)) 111424afba76SLiad Kaufman ieee80211_free_txskb(mvm->hw, skb); 111524afba76SLiad Kaufman local_bh_enable(); 111624afba76SLiad Kaufman 111724afba76SLiad Kaufman /* Wake queue */ 111824afba76SLiad Kaufman iwl_mvm_start_mac_queues(mvm, BIT(mac_queue)); 111924afba76SLiad Kaufman } 112024afba76SLiad Kaufman 112124afba76SLiad Kaufman void iwl_mvm_add_new_dqa_stream_wk(struct work_struct *wk) 112224afba76SLiad Kaufman { 112324afba76SLiad Kaufman struct iwl_mvm *mvm = container_of(wk, struct iwl_mvm, 112424afba76SLiad Kaufman add_stream_wk); 112524afba76SLiad Kaufman struct ieee80211_sta *sta; 112624afba76SLiad Kaufman struct iwl_mvm_sta *mvmsta; 112724afba76SLiad Kaufman unsigned long deferred_tid_traffic; 11289f9af3d7SLiad Kaufman int queue, sta_id, tid; 112924afba76SLiad Kaufman 11309794c64fSLiad Kaufman /* Check inactivity of queues */ 11319794c64fSLiad Kaufman iwl_mvm_inactivity_check(mvm); 11329794c64fSLiad Kaufman 113324afba76SLiad Kaufman mutex_lock(&mvm->mutex); 113424afba76SLiad Kaufman 113534e10860SSara Sharon /* No queue reconfiguration in TVQM mode */ 113634e10860SSara Sharon if (iwl_mvm_has_new_tx_api(mvm)) 113734e10860SSara Sharon goto alloc_queues; 113834e10860SSara Sharon 11399f9af3d7SLiad Kaufman /* Reconfigure queues requiring reconfiguation */ 114034e10860SSara Sharon for (queue = 0; queue < ARRAY_SIZE(mvm->queue_info); queue++) { 11419f9af3d7SLiad Kaufman bool reconfig; 114219aefa45SLiad Kaufman bool change_owner; 11439f9af3d7SLiad Kaufman 11449f9af3d7SLiad Kaufman spin_lock_bh(&mvm->queue_info_lock); 11459f9af3d7SLiad Kaufman reconfig = (mvm->queue_info[queue].status == 11469f9af3d7SLiad Kaufman IWL_MVM_QUEUE_RECONFIGURING); 114719aefa45SLiad Kaufman 114819aefa45SLiad Kaufman /* 114919aefa45SLiad Kaufman * We need to take into account a situation in which a TXQ was 115019aefa45SLiad Kaufman * allocated to TID x, and then turned shared by adding TIDs y 115119aefa45SLiad Kaufman * and z. If TID x becomes inactive and is removed from the TXQ, 115219aefa45SLiad Kaufman * ownership must be given to one of the remaining TIDs. 115319aefa45SLiad Kaufman * This is mainly because if TID x continues - a new queue can't 115419aefa45SLiad Kaufman * be allocated for it as long as it is an owner of another TXQ. 115519aefa45SLiad Kaufman */ 115619aefa45SLiad Kaufman change_owner = !(mvm->queue_info[queue].tid_bitmap & 115719aefa45SLiad Kaufman BIT(mvm->queue_info[queue].txq_tid)) && 115819aefa45SLiad Kaufman (mvm->queue_info[queue].status == 115919aefa45SLiad Kaufman IWL_MVM_QUEUE_SHARED); 11609f9af3d7SLiad Kaufman spin_unlock_bh(&mvm->queue_info_lock); 11619f9af3d7SLiad Kaufman 11629f9af3d7SLiad Kaufman if (reconfig) 11639f9af3d7SLiad Kaufman iwl_mvm_unshare_queue(mvm, queue); 116419aefa45SLiad Kaufman else if (change_owner) 116519aefa45SLiad Kaufman iwl_mvm_change_queue_owner(mvm, queue); 11669f9af3d7SLiad Kaufman } 11679f9af3d7SLiad Kaufman 116834e10860SSara Sharon alloc_queues: 116924afba76SLiad Kaufman /* Go over all stations with deferred traffic */ 117024afba76SLiad Kaufman for_each_set_bit(sta_id, mvm->sta_deferred_frames, 117124afba76SLiad Kaufman IWL_MVM_STATION_COUNT) { 117224afba76SLiad Kaufman clear_bit(sta_id, mvm->sta_deferred_frames); 117324afba76SLiad Kaufman sta = rcu_dereference_protected(mvm->fw_id_to_mac_id[sta_id], 117424afba76SLiad Kaufman lockdep_is_held(&mvm->mutex)); 117524afba76SLiad Kaufman if (IS_ERR_OR_NULL(sta)) 117624afba76SLiad Kaufman continue; 117724afba76SLiad Kaufman 117824afba76SLiad Kaufman mvmsta = iwl_mvm_sta_from_mac80211(sta); 117924afba76SLiad Kaufman deferred_tid_traffic = mvmsta->deferred_traffic_tid_map; 118024afba76SLiad Kaufman 118124afba76SLiad Kaufman for_each_set_bit(tid, &deferred_tid_traffic, 118224afba76SLiad Kaufman IWL_MAX_TID_COUNT + 1) 118324afba76SLiad Kaufman iwl_mvm_tx_deferred_stream(mvm, sta, tid); 118424afba76SLiad Kaufman } 118524afba76SLiad Kaufman 118624afba76SLiad Kaufman mutex_unlock(&mvm->mutex); 118724afba76SLiad Kaufman } 118824afba76SLiad Kaufman 118924afba76SLiad Kaufman static int iwl_mvm_reserve_sta_stream(struct iwl_mvm *mvm, 1190d5216a28SLiad Kaufman struct ieee80211_sta *sta, 1191d5216a28SLiad Kaufman enum nl80211_iftype vif_type) 119224afba76SLiad Kaufman { 119324afba76SLiad Kaufman struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta); 119424afba76SLiad Kaufman int queue; 119501796ff2SSara Sharon bool using_inactive_queue = false, same_sta = false; 119624afba76SLiad Kaufman 1197396952eeSSara Sharon /* queue reserving is disabled on new TX path */ 1198396952eeSSara Sharon if (WARN_ON(iwl_mvm_has_new_tx_api(mvm))) 1199396952eeSSara Sharon return 0; 1200396952eeSSara Sharon 12019794c64fSLiad Kaufman /* 12029794c64fSLiad Kaufman * Check for inactive queues, so we don't reach a situation where we 12039794c64fSLiad Kaufman * can't add a STA due to a shortage in queues that doesn't really exist 12049794c64fSLiad Kaufman */ 12059794c64fSLiad Kaufman iwl_mvm_inactivity_check(mvm); 12069794c64fSLiad Kaufman 120724afba76SLiad Kaufman spin_lock_bh(&mvm->queue_info_lock); 120824afba76SLiad Kaufman 120924afba76SLiad Kaufman /* Make sure we have free resources for this STA */ 1210d5216a28SLiad Kaufman if (vif_type == NL80211_IFTYPE_STATION && !sta->tdls && 1211d5216a28SLiad Kaufman !mvm->queue_info[IWL_MVM_DQA_BSS_CLIENT_QUEUE].hw_queue_refcount && 1212cf961e16SLiad Kaufman (mvm->queue_info[IWL_MVM_DQA_BSS_CLIENT_QUEUE].status == 1213cf961e16SLiad Kaufman IWL_MVM_QUEUE_FREE)) 1214d5216a28SLiad Kaufman queue = IWL_MVM_DQA_BSS_CLIENT_QUEUE; 1215d5216a28SLiad Kaufman else 12169794c64fSLiad Kaufman queue = iwl_mvm_find_free_queue(mvm, mvmsta->sta_id, 12179794c64fSLiad Kaufman IWL_MVM_DQA_MIN_DATA_QUEUE, 121824afba76SLiad Kaufman IWL_MVM_DQA_MAX_DATA_QUEUE); 121924afba76SLiad Kaufman if (queue < 0) { 122024afba76SLiad Kaufman spin_unlock_bh(&mvm->queue_info_lock); 122124afba76SLiad Kaufman IWL_ERR(mvm, "No available queues for new station\n"); 122224afba76SLiad Kaufman return -ENOSPC; 122301796ff2SSara Sharon } else if (mvm->queue_info[queue].status == IWL_MVM_QUEUE_INACTIVE) { 122401796ff2SSara Sharon /* 122501796ff2SSara Sharon * If this queue is already allocated but inactive we'll need to 122601796ff2SSara Sharon * first free this queue before enabling it again, we'll mark 122701796ff2SSara Sharon * it as reserved to make sure no new traffic arrives on it 122801796ff2SSara Sharon */ 122901796ff2SSara Sharon using_inactive_queue = true; 123001796ff2SSara Sharon same_sta = mvm->queue_info[queue].ra_sta_id == mvmsta->sta_id; 123124afba76SLiad Kaufman } 1232cf961e16SLiad Kaufman mvm->queue_info[queue].status = IWL_MVM_QUEUE_RESERVED; 123324afba76SLiad Kaufman 123424afba76SLiad Kaufman spin_unlock_bh(&mvm->queue_info_lock); 123524afba76SLiad Kaufman 123624afba76SLiad Kaufman mvmsta->reserved_queue = queue; 123724afba76SLiad Kaufman 123801796ff2SSara Sharon if (using_inactive_queue) 123901796ff2SSara Sharon iwl_mvm_free_inactive_queue(mvm, queue, same_sta); 124001796ff2SSara Sharon 124124afba76SLiad Kaufman IWL_DEBUG_TX_QUEUES(mvm, "Reserving data queue #%d for sta_id %d\n", 124224afba76SLiad Kaufman queue, mvmsta->sta_id); 124324afba76SLiad Kaufman 124424afba76SLiad Kaufman return 0; 124524afba76SLiad Kaufman } 124624afba76SLiad Kaufman 12478d98ae6eSLiad Kaufman /* 12488d98ae6eSLiad Kaufman * In DQA mode, after a HW restart the queues should be allocated as before, in 12498d98ae6eSLiad Kaufman * order to avoid race conditions when there are shared queues. This function 12508d98ae6eSLiad Kaufman * does the re-mapping and queue allocation. 12518d98ae6eSLiad Kaufman * 12528d98ae6eSLiad Kaufman * Note that re-enabling aggregations isn't done in this function. 12538d98ae6eSLiad Kaufman */ 12548d98ae6eSLiad Kaufman static void iwl_mvm_realloc_queues_after_restart(struct iwl_mvm *mvm, 12558d98ae6eSLiad Kaufman struct iwl_mvm_sta *mvm_sta) 12568d98ae6eSLiad Kaufman { 12578d98ae6eSLiad Kaufman unsigned int wdg_timeout = 12588d98ae6eSLiad Kaufman iwl_mvm_get_wd_timeout(mvm, mvm_sta->vif, false, false); 12598d98ae6eSLiad Kaufman int i; 12608d98ae6eSLiad Kaufman struct iwl_trans_txq_scd_cfg cfg = { 12618d98ae6eSLiad Kaufman .sta_id = mvm_sta->sta_id, 12628d98ae6eSLiad Kaufman .frame_limit = IWL_FRAME_LIMIT, 12638d98ae6eSLiad Kaufman }; 12648d98ae6eSLiad Kaufman 126503c902bfSJohannes Berg /* Make sure reserved queue is still marked as such (if allocated) */ 126603c902bfSJohannes Berg if (mvm_sta->reserved_queue != IEEE80211_INVAL_HW_QUEUE) 12678d98ae6eSLiad Kaufman mvm->queue_info[mvm_sta->reserved_queue].status = 12688d98ae6eSLiad Kaufman IWL_MVM_QUEUE_RESERVED; 12698d98ae6eSLiad Kaufman 12708d98ae6eSLiad Kaufman for (i = 0; i <= IWL_MAX_TID_COUNT; i++) { 12718d98ae6eSLiad Kaufman struct iwl_mvm_tid_data *tid_data = &mvm_sta->tid_data[i]; 12728d98ae6eSLiad Kaufman int txq_id = tid_data->txq_id; 12738d98ae6eSLiad Kaufman int ac; 12748d98ae6eSLiad Kaufman u8 mac_queue; 12758d98ae6eSLiad Kaufman 12766862fceeSSara Sharon if (txq_id == IWL_MVM_INVALID_QUEUE) 12778d98ae6eSLiad Kaufman continue; 12788d98ae6eSLiad Kaufman 12798d98ae6eSLiad Kaufman skb_queue_head_init(&tid_data->deferred_tx_frames); 12808d98ae6eSLiad Kaufman 12818d98ae6eSLiad Kaufman ac = tid_to_mac80211_ac[i]; 12828d98ae6eSLiad Kaufman mac_queue = mvm_sta->vif->hw_queue[ac]; 12838d98ae6eSLiad Kaufman 1284310181ecSSara Sharon if (iwl_mvm_has_new_tx_api(mvm)) { 1285310181ecSSara Sharon IWL_DEBUG_TX_QUEUES(mvm, 1286310181ecSSara Sharon "Re-mapping sta %d tid %d\n", 1287310181ecSSara Sharon mvm_sta->sta_id, i); 1288310181ecSSara Sharon txq_id = iwl_mvm_tvqm_enable_txq(mvm, mac_queue, 1289310181ecSSara Sharon mvm_sta->sta_id, 1290310181ecSSara Sharon i, wdg_timeout); 1291310181ecSSara Sharon tid_data->txq_id = txq_id; 1292310181ecSSara Sharon } else { 1293310181ecSSara Sharon u16 seq = IEEE80211_SEQ_TO_SN(tid_data->seq_number); 1294310181ecSSara Sharon 12958d98ae6eSLiad Kaufman cfg.tid = i; 12968d98ae6eSLiad Kaufman cfg.fifo = iwl_mvm_ac_to_tx_fifo[ac]; 12978d98ae6eSLiad Kaufman cfg.aggregate = (txq_id >= IWL_MVM_DQA_MIN_DATA_QUEUE || 1298310181ecSSara Sharon txq_id == 1299310181ecSSara Sharon IWL_MVM_DQA_BSS_CLIENT_QUEUE); 13008d98ae6eSLiad Kaufman 13018d98ae6eSLiad Kaufman IWL_DEBUG_TX_QUEUES(mvm, 13028d98ae6eSLiad Kaufman "Re-mapping sta %d tid %d to queue %d\n", 13038d98ae6eSLiad Kaufman mvm_sta->sta_id, i, txq_id); 13048d98ae6eSLiad Kaufman 1305310181ecSSara Sharon iwl_mvm_enable_txq(mvm, txq_id, mac_queue, seq, &cfg, 1306310181ecSSara Sharon wdg_timeout); 13078d98ae6eSLiad Kaufman mvm->queue_info[txq_id].status = IWL_MVM_QUEUE_READY; 13088d98ae6eSLiad Kaufman } 130934e10860SSara Sharon } 13108d98ae6eSLiad Kaufman 13118d98ae6eSLiad Kaufman atomic_set(&mvm->pending_frames[mvm_sta->sta_id], 0); 13128d98ae6eSLiad Kaufman } 13138d98ae6eSLiad Kaufman 1314e705c121SKalle Valo int iwl_mvm_add_sta(struct iwl_mvm *mvm, 1315e705c121SKalle Valo struct ieee80211_vif *vif, 1316e705c121SKalle Valo struct ieee80211_sta *sta) 1317e705c121SKalle Valo { 1318e705c121SKalle Valo struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 1319e705c121SKalle Valo struct iwl_mvm_sta *mvm_sta = iwl_mvm_sta_from_mac80211(sta); 1320a571f5f6SSara Sharon struct iwl_mvm_rxq_dup_data *dup_data; 1321e705c121SKalle Valo int i, ret, sta_id; 1322e705c121SKalle Valo 1323e705c121SKalle Valo lockdep_assert_held(&mvm->mutex); 1324e705c121SKalle Valo 1325e705c121SKalle Valo if (!test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status)) 1326e705c121SKalle Valo sta_id = iwl_mvm_find_free_sta_id(mvm, 1327e705c121SKalle Valo ieee80211_vif_type_p2p(vif)); 1328e705c121SKalle Valo else 1329e705c121SKalle Valo sta_id = mvm_sta->sta_id; 1330e705c121SKalle Valo 13310ae98812SSara Sharon if (sta_id == IWL_MVM_INVALID_STA) 1332e705c121SKalle Valo return -ENOSPC; 1333e705c121SKalle Valo 1334e705c121SKalle Valo spin_lock_init(&mvm_sta->lock); 1335e705c121SKalle Valo 13368d98ae6eSLiad Kaufman /* In DQA mode, if this is a HW restart, re-alloc existing queues */ 13378d98ae6eSLiad Kaufman if (iwl_mvm_is_dqa_supported(mvm) && 13388d98ae6eSLiad Kaufman test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status)) { 13398d98ae6eSLiad Kaufman iwl_mvm_realloc_queues_after_restart(mvm, mvm_sta); 13408d98ae6eSLiad Kaufman goto update_fw; 13418d98ae6eSLiad Kaufman } 13428d98ae6eSLiad Kaufman 1343e705c121SKalle Valo mvm_sta->sta_id = sta_id; 1344e705c121SKalle Valo mvm_sta->mac_id_n_color = FW_CMD_ID_AND_COLOR(mvmvif->id, 1345e705c121SKalle Valo mvmvif->color); 1346e705c121SKalle Valo mvm_sta->vif = vif; 1347e705c121SKalle Valo mvm_sta->max_agg_bufsize = LINK_QUAL_AGG_FRAME_LIMIT_DEF; 1348e705c121SKalle Valo mvm_sta->tx_protection = 0; 1349e705c121SKalle Valo mvm_sta->tt_tx_protection = false; 1350ced19f26SSara Sharon mvm_sta->sta_type = sta->tdls ? IWL_STA_TDLS_LINK : IWL_STA_LINK; 1351e705c121SKalle Valo 1352e705c121SKalle Valo /* HW restart, don't assume the memory has been zeroed */ 1353e705c121SKalle Valo atomic_set(&mvm->pending_frames[sta_id], 0); 1354e705c121SKalle Valo mvm_sta->tid_disable_agg = 0xffff; /* No aggs at first */ 1355e705c121SKalle Valo mvm_sta->tfd_queue_msk = 0; 1356e705c121SKalle Valo 1357e3118ad7SLiad Kaufman /* 1358e3118ad7SLiad Kaufman * Allocate new queues for a TDLS station, unless we're in DQA mode, 1359e3118ad7SLiad Kaufman * and then they'll be allocated dynamically 1360e3118ad7SLiad Kaufman */ 1361e3118ad7SLiad Kaufman if (!iwl_mvm_is_dqa_supported(mvm) && sta->tdls) { 1362e705c121SKalle Valo ret = iwl_mvm_tdls_sta_init(mvm, sta); 1363e705c121SKalle Valo if (ret) 1364e705c121SKalle Valo return ret; 136524afba76SLiad Kaufman } else if (!iwl_mvm_is_dqa_supported(mvm)) { 1366e705c121SKalle Valo for (i = 0; i < IEEE80211_NUM_ACS; i++) 1367e705c121SKalle Valo if (vif->hw_queue[i] != IEEE80211_INVAL_HW_QUEUE) 1368e705c121SKalle Valo mvm_sta->tfd_queue_msk |= BIT(vif->hw_queue[i]); 1369e705c121SKalle Valo } 1370e705c121SKalle Valo 1371e705c121SKalle Valo /* for HW restart - reset everything but the sequence number */ 137224afba76SLiad Kaufman for (i = 0; i <= IWL_MAX_TID_COUNT; i++) { 1373e705c121SKalle Valo u16 seq = mvm_sta->tid_data[i].seq_number; 1374e705c121SKalle Valo memset(&mvm_sta->tid_data[i], 0, sizeof(mvm_sta->tid_data[i])); 1375e705c121SKalle Valo mvm_sta->tid_data[i].seq_number = seq; 137624afba76SLiad Kaufman 137724afba76SLiad Kaufman if (!iwl_mvm_is_dqa_supported(mvm)) 137824afba76SLiad Kaufman continue; 137924afba76SLiad Kaufman 138024afba76SLiad Kaufman /* 138124afba76SLiad Kaufman * Mark all queues for this STA as unallocated and defer TX 138224afba76SLiad Kaufman * frames until the queue is allocated 138324afba76SLiad Kaufman */ 13846862fceeSSara Sharon mvm_sta->tid_data[i].txq_id = IWL_MVM_INVALID_QUEUE; 138524afba76SLiad Kaufman skb_queue_head_init(&mvm_sta->tid_data[i].deferred_tx_frames); 1386e705c121SKalle Valo } 138724afba76SLiad Kaufman mvm_sta->deferred_traffic_tid_map = 0; 1388e705c121SKalle Valo mvm_sta->agg_tids = 0; 1389e705c121SKalle Valo 1390a571f5f6SSara Sharon if (iwl_mvm_has_new_rx_api(mvm) && 1391a571f5f6SSara Sharon !test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status)) { 1392a571f5f6SSara Sharon dup_data = kcalloc(mvm->trans->num_rx_queues, 1393a571f5f6SSara Sharon sizeof(*dup_data), 1394a571f5f6SSara Sharon GFP_KERNEL); 1395a571f5f6SSara Sharon if (!dup_data) 1396a571f5f6SSara Sharon return -ENOMEM; 1397a571f5f6SSara Sharon mvm_sta->dup_data = dup_data; 1398a571f5f6SSara Sharon } 1399a571f5f6SSara Sharon 1400396952eeSSara Sharon if (iwl_mvm_is_dqa_supported(mvm) && !iwl_mvm_has_new_tx_api(mvm)) { 1401d5216a28SLiad Kaufman ret = iwl_mvm_reserve_sta_stream(mvm, sta, 1402d5216a28SLiad Kaufman ieee80211_vif_type_p2p(vif)); 140324afba76SLiad Kaufman if (ret) 140424afba76SLiad Kaufman goto err; 140524afba76SLiad Kaufman } 140624afba76SLiad Kaufman 14078d98ae6eSLiad Kaufman update_fw: 140824afba76SLiad Kaufman ret = iwl_mvm_sta_send_to_fw(mvm, sta, false, 0); 1409e705c121SKalle Valo if (ret) 1410e705c121SKalle Valo goto err; 1411e705c121SKalle Valo 1412e705c121SKalle Valo if (vif->type == NL80211_IFTYPE_STATION) { 1413e705c121SKalle Valo if (!sta->tdls) { 14140ae98812SSara Sharon WARN_ON(mvmvif->ap_sta_id != IWL_MVM_INVALID_STA); 1415e705c121SKalle Valo mvmvif->ap_sta_id = sta_id; 1416e705c121SKalle Valo } else { 14170ae98812SSara Sharon WARN_ON(mvmvif->ap_sta_id == IWL_MVM_INVALID_STA); 1418e705c121SKalle Valo } 1419e705c121SKalle Valo } 1420e705c121SKalle Valo 1421e705c121SKalle Valo rcu_assign_pointer(mvm->fw_id_to_mac_id[sta_id], sta); 1422e705c121SKalle Valo 1423e705c121SKalle Valo return 0; 1424e705c121SKalle Valo 1425e705c121SKalle Valo err: 1426e3118ad7SLiad Kaufman if (!iwl_mvm_is_dqa_supported(mvm) && sta->tdls) 1427e705c121SKalle Valo iwl_mvm_tdls_sta_deinit(mvm, sta); 1428e705c121SKalle Valo return ret; 1429e705c121SKalle Valo } 1430e705c121SKalle Valo 1431e705c121SKalle Valo int iwl_mvm_drain_sta(struct iwl_mvm *mvm, struct iwl_mvm_sta *mvmsta, 1432e705c121SKalle Valo bool drain) 1433e705c121SKalle Valo { 1434e705c121SKalle Valo struct iwl_mvm_add_sta_cmd cmd = {}; 1435e705c121SKalle Valo int ret; 1436e705c121SKalle Valo u32 status; 1437e705c121SKalle Valo 1438e705c121SKalle Valo lockdep_assert_held(&mvm->mutex); 1439e705c121SKalle Valo 1440e705c121SKalle Valo cmd.mac_id_n_color = cpu_to_le32(mvmsta->mac_id_n_color); 1441e705c121SKalle Valo cmd.sta_id = mvmsta->sta_id; 1442e705c121SKalle Valo cmd.add_modify = STA_MODE_MODIFY; 1443e705c121SKalle Valo cmd.station_flags = drain ? cpu_to_le32(STA_FLG_DRAIN_FLOW) : 0; 1444e705c121SKalle Valo cmd.station_flags_msk = cpu_to_le32(STA_FLG_DRAIN_FLOW); 1445e705c121SKalle Valo 1446e705c121SKalle Valo status = ADD_STA_SUCCESS; 1447854c5705SSara Sharon ret = iwl_mvm_send_cmd_pdu_status(mvm, ADD_STA, 1448854c5705SSara Sharon iwl_mvm_add_sta_cmd_size(mvm), 1449e705c121SKalle Valo &cmd, &status); 1450e705c121SKalle Valo if (ret) 1451e705c121SKalle Valo return ret; 1452e705c121SKalle Valo 1453837c4da9SSara Sharon switch (status & IWL_ADD_STA_STATUS_MASK) { 1454e705c121SKalle Valo case ADD_STA_SUCCESS: 1455e705c121SKalle Valo IWL_DEBUG_INFO(mvm, "Frames for staid %d will drained in fw\n", 1456e705c121SKalle Valo mvmsta->sta_id); 1457e705c121SKalle Valo break; 1458e705c121SKalle Valo default: 1459e705c121SKalle Valo ret = -EIO; 1460e705c121SKalle Valo IWL_ERR(mvm, "Couldn't drain frames for staid %d\n", 1461e705c121SKalle Valo mvmsta->sta_id); 1462e705c121SKalle Valo break; 1463e705c121SKalle Valo } 1464e705c121SKalle Valo 1465e705c121SKalle Valo return ret; 1466e705c121SKalle Valo } 1467e705c121SKalle Valo 1468e705c121SKalle Valo /* 1469e705c121SKalle Valo * Remove a station from the FW table. Before sending the command to remove 1470e705c121SKalle Valo * the station validate that the station is indeed known to the driver (sanity 1471e705c121SKalle Valo * only). 1472e705c121SKalle Valo */ 1473e705c121SKalle Valo static int iwl_mvm_rm_sta_common(struct iwl_mvm *mvm, u8 sta_id) 1474e705c121SKalle Valo { 1475e705c121SKalle Valo struct ieee80211_sta *sta; 1476e705c121SKalle Valo struct iwl_mvm_rm_sta_cmd rm_sta_cmd = { 1477e705c121SKalle Valo .sta_id = sta_id, 1478e705c121SKalle Valo }; 1479e705c121SKalle Valo int ret; 1480e705c121SKalle Valo 1481e705c121SKalle Valo sta = rcu_dereference_protected(mvm->fw_id_to_mac_id[sta_id], 1482e705c121SKalle Valo lockdep_is_held(&mvm->mutex)); 1483e705c121SKalle Valo 1484e705c121SKalle Valo /* Note: internal stations are marked as error values */ 1485e705c121SKalle Valo if (!sta) { 1486e705c121SKalle Valo IWL_ERR(mvm, "Invalid station id\n"); 1487e705c121SKalle Valo return -EINVAL; 1488e705c121SKalle Valo } 1489e705c121SKalle Valo 1490e705c121SKalle Valo ret = iwl_mvm_send_cmd_pdu(mvm, REMOVE_STA, 0, 1491e705c121SKalle Valo sizeof(rm_sta_cmd), &rm_sta_cmd); 1492e705c121SKalle Valo if (ret) { 1493e705c121SKalle Valo IWL_ERR(mvm, "Failed to remove station. Id=%d\n", sta_id); 1494e705c121SKalle Valo return ret; 1495e705c121SKalle Valo } 1496e705c121SKalle Valo 1497e705c121SKalle Valo return 0; 1498e705c121SKalle Valo } 1499e705c121SKalle Valo 1500e705c121SKalle Valo void iwl_mvm_sta_drained_wk(struct work_struct *wk) 1501e705c121SKalle Valo { 1502e705c121SKalle Valo struct iwl_mvm *mvm = container_of(wk, struct iwl_mvm, sta_drained_wk); 1503e705c121SKalle Valo u8 sta_id; 1504e705c121SKalle Valo 1505e705c121SKalle Valo /* 1506e705c121SKalle Valo * The mutex is needed because of the SYNC cmd, but not only: if the 1507e705c121SKalle Valo * work would run concurrently with iwl_mvm_rm_sta, it would run before 1508e705c121SKalle Valo * iwl_mvm_rm_sta sets the station as busy, and exit. Then 1509e705c121SKalle Valo * iwl_mvm_rm_sta would set the station as busy, and nobody will clean 1510e705c121SKalle Valo * that later. 1511e705c121SKalle Valo */ 1512e705c121SKalle Valo mutex_lock(&mvm->mutex); 1513e705c121SKalle Valo 1514e705c121SKalle Valo for_each_set_bit(sta_id, mvm->sta_drained, IWL_MVM_STATION_COUNT) { 1515e705c121SKalle Valo int ret; 1516e705c121SKalle Valo struct ieee80211_sta *sta = 1517e705c121SKalle Valo rcu_dereference_protected(mvm->fw_id_to_mac_id[sta_id], 1518e705c121SKalle Valo lockdep_is_held(&mvm->mutex)); 1519e705c121SKalle Valo 1520e705c121SKalle Valo /* 1521e705c121SKalle Valo * This station is in use or RCU-removed; the latter happens in 1522e705c121SKalle Valo * managed mode, where mac80211 removes the station before we 1523e705c121SKalle Valo * can remove it from firmware (we can only do that after the 1524e705c121SKalle Valo * MAC is marked unassociated), and possibly while the deauth 1525e705c121SKalle Valo * frame to disconnect from the AP is still queued. Then, the 1526e705c121SKalle Valo * station pointer is -ENOENT when the last skb is reclaimed. 1527e705c121SKalle Valo */ 1528e705c121SKalle Valo if (!IS_ERR(sta) || PTR_ERR(sta) == -ENOENT) 1529e705c121SKalle Valo continue; 1530e705c121SKalle Valo 1531e705c121SKalle Valo if (PTR_ERR(sta) == -EINVAL) { 1532e705c121SKalle Valo IWL_ERR(mvm, "Drained sta %d, but it is internal?\n", 1533e705c121SKalle Valo sta_id); 1534e705c121SKalle Valo continue; 1535e705c121SKalle Valo } 1536e705c121SKalle Valo 1537e705c121SKalle Valo if (!sta) { 1538e705c121SKalle Valo IWL_ERR(mvm, "Drained sta %d, but it was NULL?\n", 1539e705c121SKalle Valo sta_id); 1540e705c121SKalle Valo continue; 1541e705c121SKalle Valo } 1542e705c121SKalle Valo 1543e705c121SKalle Valo WARN_ON(PTR_ERR(sta) != -EBUSY); 1544e705c121SKalle Valo /* This station was removed and we waited until it got drained, 1545e705c121SKalle Valo * we can now proceed and remove it. 1546e705c121SKalle Valo */ 1547e705c121SKalle Valo ret = iwl_mvm_rm_sta_common(mvm, sta_id); 1548e705c121SKalle Valo if (ret) { 1549e705c121SKalle Valo IWL_ERR(mvm, 1550e705c121SKalle Valo "Couldn't remove sta %d after it was drained\n", 1551e705c121SKalle Valo sta_id); 1552e705c121SKalle Valo continue; 1553e705c121SKalle Valo } 1554e705c121SKalle Valo RCU_INIT_POINTER(mvm->fw_id_to_mac_id[sta_id], NULL); 1555e705c121SKalle Valo clear_bit(sta_id, mvm->sta_drained); 1556e705c121SKalle Valo 1557e705c121SKalle Valo if (mvm->tfd_drained[sta_id]) { 1558e705c121SKalle Valo unsigned long i, msk = mvm->tfd_drained[sta_id]; 1559e705c121SKalle Valo 1560e705c121SKalle Valo for_each_set_bit(i, &msk, sizeof(msk) * BITS_PER_BYTE) 1561e705c121SKalle Valo iwl_mvm_disable_txq(mvm, i, i, 1562e705c121SKalle Valo IWL_MAX_TID_COUNT, 0); 1563e705c121SKalle Valo 1564e705c121SKalle Valo mvm->tfd_drained[sta_id] = 0; 1565e705c121SKalle Valo IWL_DEBUG_TDLS(mvm, "Drained sta %d, with queues %ld\n", 1566e705c121SKalle Valo sta_id, msk); 1567e705c121SKalle Valo } 1568e705c121SKalle Valo } 1569e705c121SKalle Valo 1570e705c121SKalle Valo mutex_unlock(&mvm->mutex); 1571e705c121SKalle Valo } 1572e705c121SKalle Valo 157324afba76SLiad Kaufman static void iwl_mvm_disable_sta_queues(struct iwl_mvm *mvm, 157424afba76SLiad Kaufman struct ieee80211_vif *vif, 157524afba76SLiad Kaufman struct iwl_mvm_sta *mvm_sta) 157624afba76SLiad Kaufman { 157724afba76SLiad Kaufman int ac; 157824afba76SLiad Kaufman int i; 157924afba76SLiad Kaufman 158024afba76SLiad Kaufman lockdep_assert_held(&mvm->mutex); 158124afba76SLiad Kaufman 158224afba76SLiad Kaufman for (i = 0; i < ARRAY_SIZE(mvm_sta->tid_data); i++) { 15836862fceeSSara Sharon if (mvm_sta->tid_data[i].txq_id == IWL_MVM_INVALID_QUEUE) 158424afba76SLiad Kaufman continue; 158524afba76SLiad Kaufman 158624afba76SLiad Kaufman ac = iwl_mvm_tid_to_ac_queue(i); 158724afba76SLiad Kaufman iwl_mvm_disable_txq(mvm, mvm_sta->tid_data[i].txq_id, 158824afba76SLiad Kaufman vif->hw_queue[ac], i, 0); 15896862fceeSSara Sharon mvm_sta->tid_data[i].txq_id = IWL_MVM_INVALID_QUEUE; 159024afba76SLiad Kaufman } 159124afba76SLiad Kaufman } 159224afba76SLiad Kaufman 1593e705c121SKalle Valo int iwl_mvm_rm_sta(struct iwl_mvm *mvm, 1594e705c121SKalle Valo struct ieee80211_vif *vif, 1595e705c121SKalle Valo struct ieee80211_sta *sta) 1596e705c121SKalle Valo { 1597e705c121SKalle Valo struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 1598e705c121SKalle Valo struct iwl_mvm_sta *mvm_sta = iwl_mvm_sta_from_mac80211(sta); 159994c3e614SSara Sharon u8 sta_id = mvm_sta->sta_id; 1600e705c121SKalle Valo int ret; 1601e705c121SKalle Valo 1602e705c121SKalle Valo lockdep_assert_held(&mvm->mutex); 1603e705c121SKalle Valo 1604a571f5f6SSara Sharon if (iwl_mvm_has_new_rx_api(mvm)) 1605a571f5f6SSara Sharon kfree(mvm_sta->dup_data); 1606a571f5f6SSara Sharon 1607a6f035a0SLiad Kaufman if ((vif->type == NL80211_IFTYPE_STATION && 160894c3e614SSara Sharon mvmvif->ap_sta_id == sta_id) || 1609a6f035a0SLiad Kaufman iwl_mvm_is_dqa_supported(mvm)){ 1610e705c121SKalle Valo ret = iwl_mvm_drain_sta(mvm, mvm_sta, true); 1611e705c121SKalle Valo if (ret) 1612e705c121SKalle Valo return ret; 1613e705c121SKalle Valo /* flush its queues here since we are freeing mvm_sta */ 1614e705c121SKalle Valo ret = iwl_mvm_flush_tx_path(mvm, mvm_sta->tfd_queue_msk, 0); 1615e705c121SKalle Valo if (ret) 1616e705c121SKalle Valo return ret; 1617a1a57877SSara Sharon ret = iwl_trans_wait_tx_queues_empty(mvm->trans, 1618e705c121SKalle Valo mvm_sta->tfd_queue_msk); 1619e705c121SKalle Valo if (ret) 1620e705c121SKalle Valo return ret; 1621e705c121SKalle Valo ret = iwl_mvm_drain_sta(mvm, mvm_sta, false); 1622e705c121SKalle Valo 162324afba76SLiad Kaufman /* If DQA is supported - the queues can be disabled now */ 162494c3e614SSara Sharon if (iwl_mvm_is_dqa_supported(mvm)) { 162556214749SLiad Kaufman iwl_mvm_disable_sta_queues(mvm, vif, mvm_sta); 162694c3e614SSara Sharon /* 162794c3e614SSara Sharon * If pending_frames is set at this point - it must be 162894c3e614SSara Sharon * driver internal logic error, since queues are empty 162994c3e614SSara Sharon * and removed successuly. 163094c3e614SSara Sharon * warn on it but set it to 0 anyway to avoid station 163194c3e614SSara Sharon * not being removed later in the function 163294c3e614SSara Sharon */ 163394c3e614SSara Sharon WARN_ON(atomic_xchg(&mvm->pending_frames[sta_id], 0)); 163494c3e614SSara Sharon } 163556214749SLiad Kaufman 163656214749SLiad Kaufman /* If there is a TXQ still marked as reserved - free it */ 163756214749SLiad Kaufman if (iwl_mvm_is_dqa_supported(mvm) && 163856214749SLiad Kaufman mvm_sta->reserved_queue != IEEE80211_INVAL_HW_QUEUE) { 1639a0315deaSLiad Kaufman u8 reserved_txq = mvm_sta->reserved_queue; 1640a0315deaSLiad Kaufman enum iwl_mvm_queue_status *status; 1641a0315deaSLiad Kaufman 1642a0315deaSLiad Kaufman /* 1643a0315deaSLiad Kaufman * If no traffic has gone through the reserved TXQ - it 1644a0315deaSLiad Kaufman * is still marked as IWL_MVM_QUEUE_RESERVED, and 1645a0315deaSLiad Kaufman * should be manually marked as free again 1646a0315deaSLiad Kaufman */ 1647a0315deaSLiad Kaufman spin_lock_bh(&mvm->queue_info_lock); 1648a0315deaSLiad Kaufman status = &mvm->queue_info[reserved_txq].status; 1649a0315deaSLiad Kaufman if (WARN((*status != IWL_MVM_QUEUE_RESERVED) && 1650a0315deaSLiad Kaufman (*status != IWL_MVM_QUEUE_FREE), 1651a0315deaSLiad Kaufman "sta_id %d reserved txq %d status %d", 165294c3e614SSara Sharon sta_id, reserved_txq, *status)) { 1653a0315deaSLiad Kaufman spin_unlock_bh(&mvm->queue_info_lock); 1654a0315deaSLiad Kaufman return -EINVAL; 1655a0315deaSLiad Kaufman } 1656a0315deaSLiad Kaufman 1657a0315deaSLiad Kaufman *status = IWL_MVM_QUEUE_FREE; 1658a0315deaSLiad Kaufman spin_unlock_bh(&mvm->queue_info_lock); 1659a0315deaSLiad Kaufman } 1660a0315deaSLiad Kaufman 1661e3118ad7SLiad Kaufman if (vif->type == NL80211_IFTYPE_STATION && 166294c3e614SSara Sharon mvmvif->ap_sta_id == sta_id) { 1663e3118ad7SLiad Kaufman /* if associated - we can't remove the AP STA now */ 1664e705c121SKalle Valo if (vif->bss_conf.assoc) 1665e705c121SKalle Valo return ret; 1666e705c121SKalle Valo 1667e705c121SKalle Valo /* unassoc - go ahead - remove the AP STA now */ 16680ae98812SSara Sharon mvmvif->ap_sta_id = IWL_MVM_INVALID_STA; 1669e705c121SKalle Valo 1670e705c121SKalle Valo /* clear d0i3_ap_sta_id if no longer relevant */ 167194c3e614SSara Sharon if (mvm->d0i3_ap_sta_id == sta_id) 16720ae98812SSara Sharon mvm->d0i3_ap_sta_id = IWL_MVM_INVALID_STA; 1673e705c121SKalle Valo } 1674e3118ad7SLiad Kaufman } 1675e705c121SKalle Valo 1676e705c121SKalle Valo /* 1677e705c121SKalle Valo * This shouldn't happen - the TDLS channel switch should be canceled 1678e705c121SKalle Valo * before the STA is removed. 1679e705c121SKalle Valo */ 168094c3e614SSara Sharon if (WARN_ON_ONCE(mvm->tdls_cs.peer.sta_id == sta_id)) { 16810ae98812SSara Sharon mvm->tdls_cs.peer.sta_id = IWL_MVM_INVALID_STA; 1682e705c121SKalle Valo cancel_delayed_work(&mvm->tdls_cs.dwork); 1683e705c121SKalle Valo } 1684e705c121SKalle Valo 1685e705c121SKalle Valo /* 1686e705c121SKalle Valo * Make sure that the tx response code sees the station as -EBUSY and 1687e705c121SKalle Valo * calls the drain worker. 1688e705c121SKalle Valo */ 1689e705c121SKalle Valo spin_lock_bh(&mvm_sta->lock); 169094c3e614SSara Sharon 1691e705c121SKalle Valo /* 1692e705c121SKalle Valo * There are frames pending on the AC queues for this station. 1693e705c121SKalle Valo * We need to wait until all the frames are drained... 1694e705c121SKalle Valo */ 169594c3e614SSara Sharon if (atomic_read(&mvm->pending_frames[sta_id])) { 169694c3e614SSara Sharon rcu_assign_pointer(mvm->fw_id_to_mac_id[sta_id], 1697e705c121SKalle Valo ERR_PTR(-EBUSY)); 1698e705c121SKalle Valo spin_unlock_bh(&mvm_sta->lock); 1699e705c121SKalle Valo 1700e705c121SKalle Valo /* disable TDLS sta queues on drain complete */ 1701e705c121SKalle Valo if (sta->tdls) { 170294c3e614SSara Sharon mvm->tfd_drained[sta_id] = mvm_sta->tfd_queue_msk; 170394c3e614SSara Sharon IWL_DEBUG_TDLS(mvm, "Draining TDLS sta %d\n", sta_id); 1704e705c121SKalle Valo } 1705e705c121SKalle Valo 1706e705c121SKalle Valo ret = iwl_mvm_drain_sta(mvm, mvm_sta, true); 1707e705c121SKalle Valo } else { 1708e705c121SKalle Valo spin_unlock_bh(&mvm_sta->lock); 1709e705c121SKalle Valo 1710e3118ad7SLiad Kaufman if (!iwl_mvm_is_dqa_supported(mvm) && sta->tdls) 1711e705c121SKalle Valo iwl_mvm_tdls_sta_deinit(mvm, sta); 1712e705c121SKalle Valo 1713e705c121SKalle Valo ret = iwl_mvm_rm_sta_common(mvm, mvm_sta->sta_id); 1714e705c121SKalle Valo RCU_INIT_POINTER(mvm->fw_id_to_mac_id[mvm_sta->sta_id], NULL); 1715e705c121SKalle Valo } 1716e705c121SKalle Valo 1717e705c121SKalle Valo return ret; 1718e705c121SKalle Valo } 1719e705c121SKalle Valo 1720e705c121SKalle Valo int iwl_mvm_rm_sta_id(struct iwl_mvm *mvm, 1721e705c121SKalle Valo struct ieee80211_vif *vif, 1722e705c121SKalle Valo u8 sta_id) 1723e705c121SKalle Valo { 1724e705c121SKalle Valo int ret = iwl_mvm_rm_sta_common(mvm, sta_id); 1725e705c121SKalle Valo 1726e705c121SKalle Valo lockdep_assert_held(&mvm->mutex); 1727e705c121SKalle Valo 1728e705c121SKalle Valo RCU_INIT_POINTER(mvm->fw_id_to_mac_id[sta_id], NULL); 1729e705c121SKalle Valo return ret; 1730e705c121SKalle Valo } 1731e705c121SKalle Valo 17320e39eb03SChaya Rachel Ivgi int iwl_mvm_allocate_int_sta(struct iwl_mvm *mvm, 1733e705c121SKalle Valo struct iwl_mvm_int_sta *sta, 1734ced19f26SSara Sharon u32 qmask, enum nl80211_iftype iftype, 1735ced19f26SSara Sharon enum iwl_sta_type type) 1736e705c121SKalle Valo { 1737e705c121SKalle Valo if (!test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status)) { 1738e705c121SKalle Valo sta->sta_id = iwl_mvm_find_free_sta_id(mvm, iftype); 17390ae98812SSara Sharon if (WARN_ON_ONCE(sta->sta_id == IWL_MVM_INVALID_STA)) 1740e705c121SKalle Valo return -ENOSPC; 1741e705c121SKalle Valo } 1742e705c121SKalle Valo 1743e705c121SKalle Valo sta->tfd_queue_msk = qmask; 1744ced19f26SSara Sharon sta->type = type; 1745e705c121SKalle Valo 1746e705c121SKalle Valo /* put a non-NULL value so iterating over the stations won't stop */ 1747e705c121SKalle Valo rcu_assign_pointer(mvm->fw_id_to_mac_id[sta->sta_id], ERR_PTR(-EINVAL)); 1748e705c121SKalle Valo return 0; 1749e705c121SKalle Valo } 1750e705c121SKalle Valo 175126d6c16bSSara Sharon void iwl_mvm_dealloc_int_sta(struct iwl_mvm *mvm, struct iwl_mvm_int_sta *sta) 1752e705c121SKalle Valo { 1753e705c121SKalle Valo RCU_INIT_POINTER(mvm->fw_id_to_mac_id[sta->sta_id], NULL); 1754e705c121SKalle Valo memset(sta, 0, sizeof(struct iwl_mvm_int_sta)); 17550ae98812SSara Sharon sta->sta_id = IWL_MVM_INVALID_STA; 1756e705c121SKalle Valo } 1757e705c121SKalle Valo 1758e705c121SKalle Valo static int iwl_mvm_add_int_sta_common(struct iwl_mvm *mvm, 1759e705c121SKalle Valo struct iwl_mvm_int_sta *sta, 1760e705c121SKalle Valo const u8 *addr, 1761e705c121SKalle Valo u16 mac_id, u16 color) 1762e705c121SKalle Valo { 1763e705c121SKalle Valo struct iwl_mvm_add_sta_cmd cmd; 1764e705c121SKalle Valo int ret; 1765e705c121SKalle Valo u32 status; 1766e705c121SKalle Valo 1767e705c121SKalle Valo lockdep_assert_held(&mvm->mutex); 1768e705c121SKalle Valo 1769e705c121SKalle Valo memset(&cmd, 0, sizeof(cmd)); 1770e705c121SKalle Valo cmd.sta_id = sta->sta_id; 1771e705c121SKalle Valo cmd.mac_id_n_color = cpu_to_le32(FW_CMD_ID_AND_COLOR(mac_id, 1772e705c121SKalle Valo color)); 1773ced19f26SSara Sharon if (fw_has_api(&mvm->fw->ucode_capa, IWL_UCODE_TLV_API_STA_TYPE)) 1774ced19f26SSara Sharon cmd.station_type = sta->type; 1775e705c121SKalle Valo 1776bb49701bSSara Sharon if (!iwl_mvm_has_new_tx_api(mvm)) 1777e705c121SKalle Valo cmd.tfd_queue_msk = cpu_to_le32(sta->tfd_queue_msk); 1778cf0cda19SLiad Kaufman cmd.tid_disable_tx = cpu_to_le16(0xffff); 1779e705c121SKalle Valo 1780e705c121SKalle Valo if (addr) 1781e705c121SKalle Valo memcpy(cmd.addr, addr, ETH_ALEN); 1782e705c121SKalle Valo 1783854c5705SSara Sharon ret = iwl_mvm_send_cmd_pdu_status(mvm, ADD_STA, 1784854c5705SSara Sharon iwl_mvm_add_sta_cmd_size(mvm), 1785e705c121SKalle Valo &cmd, &status); 1786e705c121SKalle Valo if (ret) 1787e705c121SKalle Valo return ret; 1788e705c121SKalle Valo 1789837c4da9SSara Sharon switch (status & IWL_ADD_STA_STATUS_MASK) { 1790e705c121SKalle Valo case ADD_STA_SUCCESS: 1791e705c121SKalle Valo IWL_DEBUG_INFO(mvm, "Internal station added.\n"); 1792e705c121SKalle Valo return 0; 1793e705c121SKalle Valo default: 1794e705c121SKalle Valo ret = -EIO; 1795e705c121SKalle Valo IWL_ERR(mvm, "Add internal station failed, status=0x%x\n", 1796e705c121SKalle Valo status); 1797e705c121SKalle Valo break; 1798e705c121SKalle Valo } 1799e705c121SKalle Valo return ret; 1800e705c121SKalle Valo } 1801e705c121SKalle Valo 1802c5a719eeSSara Sharon static void iwl_mvm_enable_aux_queue(struct iwl_mvm *mvm) 1803e705c121SKalle Valo { 1804e705c121SKalle Valo unsigned int wdg_timeout = iwlmvm_mod_params.tfd_q_hang_detect ? 1805e705c121SKalle Valo mvm->cfg->base_params->wd_timeout : 1806e705c121SKalle Valo IWL_WATCHDOG_DISABLED; 1807e705c121SKalle Valo 1808310181ecSSara Sharon if (iwl_mvm_has_new_tx_api(mvm)) { 1809310181ecSSara Sharon int queue = iwl_mvm_tvqm_enable_txq(mvm, mvm->aux_queue, 1810310181ecSSara Sharon mvm->aux_sta.sta_id, 1811310181ecSSara Sharon IWL_MAX_TID_COUNT, 1812310181ecSSara Sharon wdg_timeout); 1813310181ecSSara Sharon mvm->aux_queue = queue; 1814310181ecSSara Sharon } else if (iwl_mvm_is_dqa_supported(mvm)) { 181528d0793eSLiad Kaufman struct iwl_trans_txq_scd_cfg cfg = { 181628d0793eSLiad Kaufman .fifo = IWL_MVM_TX_FIFO_MCAST, 181728d0793eSLiad Kaufman .sta_id = mvm->aux_sta.sta_id, 181828d0793eSLiad Kaufman .tid = IWL_MAX_TID_COUNT, 181928d0793eSLiad Kaufman .aggregate = false, 182028d0793eSLiad Kaufman .frame_limit = IWL_FRAME_LIMIT, 182128d0793eSLiad Kaufman }; 182228d0793eSLiad Kaufman 182328d0793eSLiad Kaufman iwl_mvm_enable_txq(mvm, mvm->aux_queue, mvm->aux_queue, 0, &cfg, 182428d0793eSLiad Kaufman wdg_timeout); 1825c5a719eeSSara Sharon } else { 1826c5a719eeSSara Sharon iwl_mvm_enable_ac_txq(mvm, mvm->aux_queue, mvm->aux_queue, 1827c5a719eeSSara Sharon IWL_MVM_TX_FIFO_MCAST, 0, wdg_timeout); 182828d0793eSLiad Kaufman } 1829c5a719eeSSara Sharon } 1830c5a719eeSSara Sharon 1831c5a719eeSSara Sharon int iwl_mvm_add_aux_sta(struct iwl_mvm *mvm) 1832c5a719eeSSara Sharon { 1833c5a719eeSSara Sharon int ret; 1834c5a719eeSSara Sharon 1835c5a719eeSSara Sharon lockdep_assert_held(&mvm->mutex); 1836c5a719eeSSara Sharon 1837c5a719eeSSara Sharon /* Allocate aux station and assign to it the aux queue */ 1838c5a719eeSSara Sharon ret = iwl_mvm_allocate_int_sta(mvm, &mvm->aux_sta, BIT(mvm->aux_queue), 1839ced19f26SSara Sharon NL80211_IFTYPE_UNSPECIFIED, 1840ced19f26SSara Sharon IWL_STA_AUX_ACTIVITY); 1841c5a719eeSSara Sharon if (ret) 1842c5a719eeSSara Sharon return ret; 1843c5a719eeSSara Sharon 1844c5a719eeSSara Sharon /* Map Aux queue to fifo - needs to happen before adding Aux station */ 1845c5a719eeSSara Sharon if (!iwl_mvm_has_new_tx_api(mvm)) 1846c5a719eeSSara Sharon iwl_mvm_enable_aux_queue(mvm); 184728d0793eSLiad Kaufman 1848e705c121SKalle Valo ret = iwl_mvm_add_int_sta_common(mvm, &mvm->aux_sta, NULL, 1849e705c121SKalle Valo MAC_INDEX_AUX, 0); 1850c5a719eeSSara Sharon if (ret) { 1851e705c121SKalle Valo iwl_mvm_dealloc_int_sta(mvm, &mvm->aux_sta); 1852e705c121SKalle Valo return ret; 1853e705c121SKalle Valo } 1854e705c121SKalle Valo 1855c5a719eeSSara Sharon /* 1856c5a719eeSSara Sharon * For a000 firmware and on we cannot add queue to a station unknown 1857c5a719eeSSara Sharon * to firmware so enable queue here - after the station was added 1858c5a719eeSSara Sharon */ 1859c5a719eeSSara Sharon if (iwl_mvm_has_new_tx_api(mvm)) 1860c5a719eeSSara Sharon iwl_mvm_enable_aux_queue(mvm); 1861c5a719eeSSara Sharon 1862c5a719eeSSara Sharon return 0; 1863c5a719eeSSara Sharon } 1864c5a719eeSSara Sharon 18650e39eb03SChaya Rachel Ivgi int iwl_mvm_add_snif_sta(struct iwl_mvm *mvm, struct ieee80211_vif *vif) 18660e39eb03SChaya Rachel Ivgi { 18670e39eb03SChaya Rachel Ivgi struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 18680e39eb03SChaya Rachel Ivgi 18690e39eb03SChaya Rachel Ivgi lockdep_assert_held(&mvm->mutex); 18700e39eb03SChaya Rachel Ivgi return iwl_mvm_add_int_sta_common(mvm, &mvm->snif_sta, vif->addr, 18710e39eb03SChaya Rachel Ivgi mvmvif->id, 0); 18720e39eb03SChaya Rachel Ivgi } 18730e39eb03SChaya Rachel Ivgi 18740e39eb03SChaya Rachel Ivgi int iwl_mvm_rm_snif_sta(struct iwl_mvm *mvm, struct ieee80211_vif *vif) 18750e39eb03SChaya Rachel Ivgi { 18760e39eb03SChaya Rachel Ivgi int ret; 18770e39eb03SChaya Rachel Ivgi 18780e39eb03SChaya Rachel Ivgi lockdep_assert_held(&mvm->mutex); 18790e39eb03SChaya Rachel Ivgi 18800e39eb03SChaya Rachel Ivgi ret = iwl_mvm_rm_sta_common(mvm, mvm->snif_sta.sta_id); 18810e39eb03SChaya Rachel Ivgi if (ret) 18820e39eb03SChaya Rachel Ivgi IWL_WARN(mvm, "Failed sending remove station\n"); 18830e39eb03SChaya Rachel Ivgi 18840e39eb03SChaya Rachel Ivgi return ret; 18850e39eb03SChaya Rachel Ivgi } 18860e39eb03SChaya Rachel Ivgi 18870e39eb03SChaya Rachel Ivgi void iwl_mvm_dealloc_snif_sta(struct iwl_mvm *mvm) 18880e39eb03SChaya Rachel Ivgi { 18890e39eb03SChaya Rachel Ivgi iwl_mvm_dealloc_int_sta(mvm, &mvm->snif_sta); 18900e39eb03SChaya Rachel Ivgi } 18910e39eb03SChaya Rachel Ivgi 1892e705c121SKalle Valo void iwl_mvm_del_aux_sta(struct iwl_mvm *mvm) 1893e705c121SKalle Valo { 1894e705c121SKalle Valo lockdep_assert_held(&mvm->mutex); 1895e705c121SKalle Valo 1896e705c121SKalle Valo iwl_mvm_dealloc_int_sta(mvm, &mvm->aux_sta); 1897e705c121SKalle Valo } 1898e705c121SKalle Valo 1899e705c121SKalle Valo /* 1900e705c121SKalle Valo * Send the add station command for the vif's broadcast station. 1901e705c121SKalle Valo * Assumes that the station was already allocated. 1902e705c121SKalle Valo * 1903e705c121SKalle Valo * @mvm: the mvm component 1904e705c121SKalle Valo * @vif: the interface to which the broadcast station is added 1905e705c121SKalle Valo * @bsta: the broadcast station to add. 1906e705c121SKalle Valo */ 1907e705c121SKalle Valo int iwl_mvm_send_add_bcast_sta(struct iwl_mvm *mvm, struct ieee80211_vif *vif) 1908e705c121SKalle Valo { 1909e705c121SKalle Valo struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 1910e705c121SKalle Valo struct iwl_mvm_int_sta *bsta = &mvmvif->bcast_sta; 1911e705c121SKalle Valo static const u8 _baddr[] = {0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF}; 1912e705c121SKalle Valo const u8 *baddr = _baddr; 19137daa7624SJohannes Berg int queue; 1914df88c08dSLiad Kaufman int ret; 1915c5a719eeSSara Sharon unsigned int wdg_timeout = 1916c5a719eeSSara Sharon iwl_mvm_get_wd_timeout(mvm, vif, false, false); 1917de24f638SLiad Kaufman struct iwl_trans_txq_scd_cfg cfg = { 1918de24f638SLiad Kaufman .fifo = IWL_MVM_TX_FIFO_VO, 1919de24f638SLiad Kaufman .sta_id = mvmvif->bcast_sta.sta_id, 1920de24f638SLiad Kaufman .tid = IWL_MAX_TID_COUNT, 1921de24f638SLiad Kaufman .aggregate = false, 1922de24f638SLiad Kaufman .frame_limit = IWL_FRAME_LIMIT, 1923de24f638SLiad Kaufman }; 1924de24f638SLiad Kaufman 1925c5a719eeSSara Sharon lockdep_assert_held(&mvm->mutex); 1926c5a719eeSSara Sharon 1927310181ecSSara Sharon if (iwl_mvm_is_dqa_supported(mvm) && !iwl_mvm_has_new_tx_api(mvm)) { 19284d339989SLiad Kaufman if (vif->type == NL80211_IFTYPE_AP || 19294d339989SLiad Kaufman vif->type == NL80211_IFTYPE_ADHOC) 193049f71713SSara Sharon queue = mvm->probe_queue; 1931df88c08dSLiad Kaufman else if (vif->type == NL80211_IFTYPE_P2P_DEVICE) 193249f71713SSara Sharon queue = mvm->p2p_dev_queue; 1933df88c08dSLiad Kaufman else if (WARN(1, "Missing required TXQ for adding bcast STA\n")) 1934de24f638SLiad Kaufman return -EINVAL; 1935de24f638SLiad Kaufman 1936df88c08dSLiad Kaufman bsta->tfd_queue_msk |= BIT(queue); 1937c5a719eeSSara Sharon 1938c5a719eeSSara Sharon iwl_mvm_enable_txq(mvm, queue, vif->hw_queue[0], 0, 1939c5a719eeSSara Sharon &cfg, wdg_timeout); 1940de24f638SLiad Kaufman } 1941de24f638SLiad Kaufman 1942e705c121SKalle Valo if (vif->type == NL80211_IFTYPE_ADHOC) 1943e705c121SKalle Valo baddr = vif->bss_conf.bssid; 1944e705c121SKalle Valo 19450ae98812SSara Sharon if (WARN_ON_ONCE(bsta->sta_id == IWL_MVM_INVALID_STA)) 1946e705c121SKalle Valo return -ENOSPC; 1947e705c121SKalle Valo 1948df88c08dSLiad Kaufman ret = iwl_mvm_add_int_sta_common(mvm, bsta, baddr, 1949e705c121SKalle Valo mvmvif->id, mvmvif->color); 1950df88c08dSLiad Kaufman if (ret) 1951df88c08dSLiad Kaufman return ret; 1952df88c08dSLiad Kaufman 1953df88c08dSLiad Kaufman /* 1954c5a719eeSSara Sharon * For a000 firmware and on we cannot add queue to a station unknown 1955c5a719eeSSara Sharon * to firmware so enable queue here - after the station was added 1956df88c08dSLiad Kaufman */ 1957310181ecSSara Sharon if (iwl_mvm_has_new_tx_api(mvm)) { 19587daa7624SJohannes Berg queue = iwl_mvm_tvqm_enable_txq(mvm, vif->hw_queue[0], 1959310181ecSSara Sharon bsta->sta_id, 1960310181ecSSara Sharon IWL_MAX_TID_COUNT, 1961c5a719eeSSara Sharon wdg_timeout); 19627daa7624SJohannes Berg 1963310181ecSSara Sharon if (vif->type == NL80211_IFTYPE_AP) 1964310181ecSSara Sharon mvm->probe_queue = queue; 1965310181ecSSara Sharon else if (vif->type == NL80211_IFTYPE_P2P_DEVICE) 1966310181ecSSara Sharon mvm->p2p_dev_queue = queue; 1967310181ecSSara Sharon 1968310181ecSSara Sharon bsta->tfd_queue_msk |= BIT(queue); 1969310181ecSSara Sharon } 1970df88c08dSLiad Kaufman 1971df88c08dSLiad Kaufman return 0; 1972df88c08dSLiad Kaufman } 1973df88c08dSLiad Kaufman 1974df88c08dSLiad Kaufman static void iwl_mvm_free_bcast_sta_queues(struct iwl_mvm *mvm, 1975df88c08dSLiad Kaufman struct ieee80211_vif *vif) 1976df88c08dSLiad Kaufman { 1977df88c08dSLiad Kaufman struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 1978df88c08dSLiad Kaufman 1979df88c08dSLiad Kaufman lockdep_assert_held(&mvm->mutex); 1980df88c08dSLiad Kaufman 19814d339989SLiad Kaufman if (vif->type == NL80211_IFTYPE_AP || 19824d339989SLiad Kaufman vif->type == NL80211_IFTYPE_ADHOC) 1983df88c08dSLiad Kaufman iwl_mvm_disable_txq(mvm, vif->cab_queue, vif->cab_queue, 1984df88c08dSLiad Kaufman IWL_MAX_TID_COUNT, 0); 1985df88c08dSLiad Kaufman 198649f71713SSara Sharon if (mvmvif->bcast_sta.tfd_queue_msk & BIT(mvm->probe_queue)) { 198749f71713SSara Sharon iwl_mvm_disable_txq(mvm, mvm->probe_queue, 1988df88c08dSLiad Kaufman vif->hw_queue[0], IWL_MAX_TID_COUNT, 1989df88c08dSLiad Kaufman 0); 199049f71713SSara Sharon mvmvif->bcast_sta.tfd_queue_msk &= ~BIT(mvm->probe_queue); 1991df88c08dSLiad Kaufman } 1992df88c08dSLiad Kaufman 199349f71713SSara Sharon if (mvmvif->bcast_sta.tfd_queue_msk & BIT(mvm->p2p_dev_queue)) { 199449f71713SSara Sharon iwl_mvm_disable_txq(mvm, mvm->p2p_dev_queue, 1995df88c08dSLiad Kaufman vif->hw_queue[0], IWL_MAX_TID_COUNT, 1996df88c08dSLiad Kaufman 0); 199749f71713SSara Sharon mvmvif->bcast_sta.tfd_queue_msk &= ~BIT(mvm->p2p_dev_queue); 1998df88c08dSLiad Kaufman } 1999e705c121SKalle Valo } 2000e705c121SKalle Valo 2001e705c121SKalle Valo /* Send the FW a request to remove the station from it's internal data 2002e705c121SKalle Valo * structures, but DO NOT remove the entry from the local data structures. */ 2003e705c121SKalle Valo int iwl_mvm_send_rm_bcast_sta(struct iwl_mvm *mvm, struct ieee80211_vif *vif) 2004e705c121SKalle Valo { 2005e705c121SKalle Valo struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 2006e705c121SKalle Valo int ret; 2007e705c121SKalle Valo 2008e705c121SKalle Valo lockdep_assert_held(&mvm->mutex); 2009e705c121SKalle Valo 2010df88c08dSLiad Kaufman if (iwl_mvm_is_dqa_supported(mvm)) 2011df88c08dSLiad Kaufman iwl_mvm_free_bcast_sta_queues(mvm, vif); 2012df88c08dSLiad Kaufman 2013e705c121SKalle Valo ret = iwl_mvm_rm_sta_common(mvm, mvmvif->bcast_sta.sta_id); 2014e705c121SKalle Valo if (ret) 2015e705c121SKalle Valo IWL_WARN(mvm, "Failed sending remove station\n"); 2016e705c121SKalle Valo return ret; 2017e705c121SKalle Valo } 2018e705c121SKalle Valo 2019e705c121SKalle Valo int iwl_mvm_alloc_bcast_sta(struct iwl_mvm *mvm, struct ieee80211_vif *vif) 2020e705c121SKalle Valo { 2021e705c121SKalle Valo struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 2022de24f638SLiad Kaufman u32 qmask = 0; 2023e705c121SKalle Valo 2024e705c121SKalle Valo lockdep_assert_held(&mvm->mutex); 2025e705c121SKalle Valo 2026df88c08dSLiad Kaufman if (!iwl_mvm_is_dqa_supported(mvm)) { 2027e705c121SKalle Valo qmask = iwl_mvm_mac_get_queues_mask(vif); 2028e705c121SKalle Valo 2029e705c121SKalle Valo /* 2030e705c121SKalle Valo * The firmware defines the TFD queue mask to only be relevant 2031e705c121SKalle Valo * for *unicast* queues, so the multicast (CAB) queue shouldn't 2032df88c08dSLiad Kaufman * be included. This only happens in NL80211_IFTYPE_AP vif type, 2033df88c08dSLiad Kaufman * so the next line will only have an effect there. 2034e705c121SKalle Valo */ 2035e705c121SKalle Valo qmask &= ~BIT(vif->cab_queue); 2036de24f638SLiad Kaufman } 2037de24f638SLiad Kaufman 2038e705c121SKalle Valo return iwl_mvm_allocate_int_sta(mvm, &mvmvif->bcast_sta, qmask, 2039ced19f26SSara Sharon ieee80211_vif_type_p2p(vif), 2040ced19f26SSara Sharon IWL_STA_GENERAL_PURPOSE); 2041e705c121SKalle Valo } 2042e705c121SKalle Valo 2043e705c121SKalle Valo /* Allocate a new station entry for the broadcast station to the given vif, 2044e705c121SKalle Valo * and send it to the FW. 2045e705c121SKalle Valo * Note that each P2P mac should have its own broadcast station. 2046e705c121SKalle Valo * 2047e705c121SKalle Valo * @mvm: the mvm component 2048e705c121SKalle Valo * @vif: the interface to which the broadcast station is added 2049e705c121SKalle Valo * @bsta: the broadcast station to add. */ 2050e705c121SKalle Valo int iwl_mvm_add_bcast_sta(struct iwl_mvm *mvm, struct ieee80211_vif *vif) 2051e705c121SKalle Valo { 2052e705c121SKalle Valo struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 2053e705c121SKalle Valo struct iwl_mvm_int_sta *bsta = &mvmvif->bcast_sta; 2054e705c121SKalle Valo int ret; 2055e705c121SKalle Valo 2056e705c121SKalle Valo lockdep_assert_held(&mvm->mutex); 2057e705c121SKalle Valo 2058e705c121SKalle Valo ret = iwl_mvm_alloc_bcast_sta(mvm, vif); 2059e705c121SKalle Valo if (ret) 2060e705c121SKalle Valo return ret; 2061e705c121SKalle Valo 2062e705c121SKalle Valo ret = iwl_mvm_send_add_bcast_sta(mvm, vif); 2063e705c121SKalle Valo 2064e705c121SKalle Valo if (ret) 2065e705c121SKalle Valo iwl_mvm_dealloc_int_sta(mvm, bsta); 2066e705c121SKalle Valo 2067e705c121SKalle Valo return ret; 2068e705c121SKalle Valo } 2069e705c121SKalle Valo 2070e705c121SKalle Valo void iwl_mvm_dealloc_bcast_sta(struct iwl_mvm *mvm, struct ieee80211_vif *vif) 2071e705c121SKalle Valo { 2072e705c121SKalle Valo struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 2073e705c121SKalle Valo 2074e705c121SKalle Valo iwl_mvm_dealloc_int_sta(mvm, &mvmvif->bcast_sta); 2075e705c121SKalle Valo } 2076e705c121SKalle Valo 2077e705c121SKalle Valo /* 2078e705c121SKalle Valo * Send the FW a request to remove the station from it's internal data 2079e705c121SKalle Valo * structures, and in addition remove it from the local data structure. 2080e705c121SKalle Valo */ 2081e705c121SKalle Valo int iwl_mvm_rm_bcast_sta(struct iwl_mvm *mvm, struct ieee80211_vif *vif) 2082e705c121SKalle Valo { 2083e705c121SKalle Valo int ret; 2084e705c121SKalle Valo 2085e705c121SKalle Valo lockdep_assert_held(&mvm->mutex); 2086e705c121SKalle Valo 2087e705c121SKalle Valo ret = iwl_mvm_send_rm_bcast_sta(mvm, vif); 2088e705c121SKalle Valo 2089e705c121SKalle Valo iwl_mvm_dealloc_bcast_sta(mvm, vif); 2090e705c121SKalle Valo 2091e705c121SKalle Valo return ret; 2092e705c121SKalle Valo } 2093e705c121SKalle Valo 209426d6c16bSSara Sharon /* 209526d6c16bSSara Sharon * Allocate a new station entry for the multicast station to the given vif, 209626d6c16bSSara Sharon * and send it to the FW. 209726d6c16bSSara Sharon * Note that each AP/GO mac should have its own multicast station. 209826d6c16bSSara Sharon * 209926d6c16bSSara Sharon * @mvm: the mvm component 210026d6c16bSSara Sharon * @vif: the interface to which the multicast station is added 210126d6c16bSSara Sharon */ 210226d6c16bSSara Sharon int iwl_mvm_add_mcast_sta(struct iwl_mvm *mvm, struct ieee80211_vif *vif) 210326d6c16bSSara Sharon { 210426d6c16bSSara Sharon struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 210526d6c16bSSara Sharon struct iwl_mvm_int_sta *msta = &mvmvif->mcast_sta; 210626d6c16bSSara Sharon static const u8 _maddr[] = {0x03, 0x00, 0x00, 0x00, 0x00, 0x00}; 210726d6c16bSSara Sharon const u8 *maddr = _maddr; 210826d6c16bSSara Sharon struct iwl_trans_txq_scd_cfg cfg = { 210926d6c16bSSara Sharon .fifo = IWL_MVM_TX_FIFO_MCAST, 211026d6c16bSSara Sharon .sta_id = msta->sta_id, 211126d6c16bSSara Sharon .tid = IWL_MAX_TID_COUNT, 211226d6c16bSSara Sharon .aggregate = false, 211326d6c16bSSara Sharon .frame_limit = IWL_FRAME_LIMIT, 211426d6c16bSSara Sharon }; 211526d6c16bSSara Sharon unsigned int timeout = iwl_mvm_get_wd_timeout(mvm, vif, false, false); 211626d6c16bSSara Sharon int ret; 211726d6c16bSSara Sharon 211826d6c16bSSara Sharon lockdep_assert_held(&mvm->mutex); 211926d6c16bSSara Sharon 212026d6c16bSSara Sharon if (!iwl_mvm_is_dqa_supported(mvm)) 212126d6c16bSSara Sharon return 0; 212226d6c16bSSara Sharon 2123ee48b722SLiad Kaufman if (WARN_ON(vif->type != NL80211_IFTYPE_AP && 2124ee48b722SLiad Kaufman vif->type != NL80211_IFTYPE_ADHOC)) 212526d6c16bSSara Sharon return -ENOTSUPP; 212626d6c16bSSara Sharon 2127ced19f26SSara Sharon /* 2128ced19f26SSara Sharon * While in previous FWs we had to exclude cab queue from TFD queue 2129ced19f26SSara Sharon * mask, now it is needed as any other queue. 2130ced19f26SSara Sharon */ 2131ced19f26SSara Sharon if (!iwl_mvm_has_new_tx_api(mvm) && 2132ced19f26SSara Sharon fw_has_api(&mvm->fw->ucode_capa, IWL_UCODE_TLV_API_STA_TYPE)) { 2133ced19f26SSara Sharon iwl_mvm_enable_txq(mvm, vif->cab_queue, vif->cab_queue, 0, 2134ced19f26SSara Sharon &cfg, timeout); 2135ced19f26SSara Sharon msta->tfd_queue_msk |= BIT(vif->cab_queue); 2136ced19f26SSara Sharon } 213726d6c16bSSara Sharon ret = iwl_mvm_add_int_sta_common(mvm, msta, maddr, 213826d6c16bSSara Sharon mvmvif->id, mvmvif->color); 213926d6c16bSSara Sharon if (ret) { 214026d6c16bSSara Sharon iwl_mvm_dealloc_int_sta(mvm, msta); 214126d6c16bSSara Sharon return ret; 214226d6c16bSSara Sharon } 214326d6c16bSSara Sharon 214426d6c16bSSara Sharon /* 214526d6c16bSSara Sharon * Enable cab queue after the ADD_STA command is sent. 214626d6c16bSSara Sharon * This is needed for a000 firmware which won't accept SCD_QUEUE_CFG 2147ced19f26SSara Sharon * command with unknown station id, and for FW that doesn't support 2148ced19f26SSara Sharon * station API since the cab queue is not included in the 2149ced19f26SSara Sharon * tfd_queue_mask. 215026d6c16bSSara Sharon */ 2151310181ecSSara Sharon if (iwl_mvm_has_new_tx_api(mvm)) { 2152310181ecSSara Sharon int queue = iwl_mvm_tvqm_enable_txq(mvm, vif->cab_queue, 2153310181ecSSara Sharon msta->sta_id, 2154310181ecSSara Sharon IWL_MAX_TID_COUNT, 215526d6c16bSSara Sharon timeout); 2156e2af3fabSSara Sharon mvmvif->cab_queue = queue; 2157ced19f26SSara Sharon } else if (!fw_has_api(&mvm->fw->ucode_capa, 2158ced19f26SSara Sharon IWL_UCODE_TLV_API_STA_TYPE)) { 2159ee48b722SLiad Kaufman /* 2160ee48b722SLiad Kaufman * In IBSS, ieee80211_check_queues() sets the cab_queue to be 2161ee48b722SLiad Kaufman * invalid, so make sure we use the queue we want. 2162ee48b722SLiad Kaufman * Note that this is done here as we want to avoid making DQA 2163ee48b722SLiad Kaufman * changes in mac80211 layer. 2164ee48b722SLiad Kaufman */ 2165ee48b722SLiad Kaufman if (vif->type == NL80211_IFTYPE_ADHOC) { 2166ee48b722SLiad Kaufman vif->cab_queue = IWL_MVM_DQA_GCAST_QUEUE; 2167ee48b722SLiad Kaufman mvmvif->cab_queue = vif->cab_queue; 2168ee48b722SLiad Kaufman } 2169310181ecSSara Sharon iwl_mvm_enable_txq(mvm, vif->cab_queue, vif->cab_queue, 0, 2170310181ecSSara Sharon &cfg, timeout); 2171310181ecSSara Sharon } 217226d6c16bSSara Sharon 217326d6c16bSSara Sharon return 0; 217426d6c16bSSara Sharon } 217526d6c16bSSara Sharon 217626d6c16bSSara Sharon /* 217726d6c16bSSara Sharon * Send the FW a request to remove the station from it's internal data 217826d6c16bSSara Sharon * structures, and in addition remove it from the local data structure. 217926d6c16bSSara Sharon */ 218026d6c16bSSara Sharon int iwl_mvm_rm_mcast_sta(struct iwl_mvm *mvm, struct ieee80211_vif *vif) 218126d6c16bSSara Sharon { 218226d6c16bSSara Sharon struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 218326d6c16bSSara Sharon int ret; 218426d6c16bSSara Sharon 218526d6c16bSSara Sharon lockdep_assert_held(&mvm->mutex); 218626d6c16bSSara Sharon 218726d6c16bSSara Sharon if (!iwl_mvm_is_dqa_supported(mvm)) 218826d6c16bSSara Sharon return 0; 218926d6c16bSSara Sharon 2190e2af3fabSSara Sharon iwl_mvm_disable_txq(mvm, mvmvif->cab_queue, vif->cab_queue, 219126d6c16bSSara Sharon IWL_MAX_TID_COUNT, 0); 219226d6c16bSSara Sharon 219326d6c16bSSara Sharon ret = iwl_mvm_rm_sta_common(mvm, mvmvif->mcast_sta.sta_id); 219426d6c16bSSara Sharon if (ret) 219526d6c16bSSara Sharon IWL_WARN(mvm, "Failed sending remove station\n"); 219626d6c16bSSara Sharon 219726d6c16bSSara Sharon return ret; 219826d6c16bSSara Sharon } 219926d6c16bSSara Sharon 2200e705c121SKalle Valo #define IWL_MAX_RX_BA_SESSIONS 16 2201e705c121SKalle Valo 2202b915c101SSara Sharon static void iwl_mvm_sync_rxq_del_ba(struct iwl_mvm *mvm, u8 baid) 220310b2b201SSara Sharon { 2204b915c101SSara Sharon struct iwl_mvm_delba_notif notif = { 2205b915c101SSara Sharon .metadata.type = IWL_MVM_RXQ_NOTIF_DEL_BA, 2206b915c101SSara Sharon .metadata.sync = 1, 2207b915c101SSara Sharon .delba.baid = baid, 2208b915c101SSara Sharon }; 2209b915c101SSara Sharon iwl_mvm_sync_rx_queues_internal(mvm, (void *)¬if, sizeof(notif)); 221010b2b201SSara Sharon }; 221110b2b201SSara Sharon 2212b915c101SSara Sharon static void iwl_mvm_free_reorder(struct iwl_mvm *mvm, 2213b915c101SSara Sharon struct iwl_mvm_baid_data *data) 2214b915c101SSara Sharon { 2215b915c101SSara Sharon int i; 2216b915c101SSara Sharon 2217b915c101SSara Sharon iwl_mvm_sync_rxq_del_ba(mvm, data->baid); 2218b915c101SSara Sharon 2219b915c101SSara Sharon for (i = 0; i < mvm->trans->num_rx_queues; i++) { 2220b915c101SSara Sharon int j; 2221b915c101SSara Sharon struct iwl_mvm_reorder_buffer *reorder_buf = 2222b915c101SSara Sharon &data->reorder_buf[i]; 2223b915c101SSara Sharon 22240690405fSSara Sharon spin_lock_bh(&reorder_buf->lock); 22250690405fSSara Sharon if (likely(!reorder_buf->num_stored)) { 22260690405fSSara Sharon spin_unlock_bh(&reorder_buf->lock); 2227b915c101SSara Sharon continue; 22280690405fSSara Sharon } 2229b915c101SSara Sharon 2230b915c101SSara Sharon /* 2231b915c101SSara Sharon * This shouldn't happen in regular DELBA since the internal 2232b915c101SSara Sharon * delBA notification should trigger a release of all frames in 2233b915c101SSara Sharon * the reorder buffer. 2234b915c101SSara Sharon */ 2235b915c101SSara Sharon WARN_ON(1); 2236b915c101SSara Sharon 2237b915c101SSara Sharon for (j = 0; j < reorder_buf->buf_size; j++) 2238b915c101SSara Sharon __skb_queue_purge(&reorder_buf->entries[j]); 22390690405fSSara Sharon /* 22400690405fSSara Sharon * Prevent timer re-arm. This prevents a very far fetched case 22410690405fSSara Sharon * where we timed out on the notification. There may be prior 22420690405fSSara Sharon * RX frames pending in the RX queue before the notification 22430690405fSSara Sharon * that might get processed between now and the actual deletion 22440690405fSSara Sharon * and we would re-arm the timer although we are deleting the 22450690405fSSara Sharon * reorder buffer. 22460690405fSSara Sharon */ 22470690405fSSara Sharon reorder_buf->removed = true; 22480690405fSSara Sharon spin_unlock_bh(&reorder_buf->lock); 22490690405fSSara Sharon del_timer_sync(&reorder_buf->reorder_timer); 2250b915c101SSara Sharon } 2251b915c101SSara Sharon } 2252b915c101SSara Sharon 2253b915c101SSara Sharon static void iwl_mvm_init_reorder_buffer(struct iwl_mvm *mvm, 2254b915c101SSara Sharon u32 sta_id, 2255b915c101SSara Sharon struct iwl_mvm_baid_data *data, 2256b915c101SSara Sharon u16 ssn, u8 buf_size) 2257b915c101SSara Sharon { 2258b915c101SSara Sharon int i; 2259b915c101SSara Sharon 2260b915c101SSara Sharon for (i = 0; i < mvm->trans->num_rx_queues; i++) { 2261b915c101SSara Sharon struct iwl_mvm_reorder_buffer *reorder_buf = 2262b915c101SSara Sharon &data->reorder_buf[i]; 2263b915c101SSara Sharon int j; 2264b915c101SSara Sharon 2265b915c101SSara Sharon reorder_buf->num_stored = 0; 2266b915c101SSara Sharon reorder_buf->head_sn = ssn; 2267b915c101SSara Sharon reorder_buf->buf_size = buf_size; 22680690405fSSara Sharon /* rx reorder timer */ 22690690405fSSara Sharon reorder_buf->reorder_timer.function = 22700690405fSSara Sharon iwl_mvm_reorder_timer_expired; 22710690405fSSara Sharon reorder_buf->reorder_timer.data = (unsigned long)reorder_buf; 22720690405fSSara Sharon init_timer(&reorder_buf->reorder_timer); 22730690405fSSara Sharon spin_lock_init(&reorder_buf->lock); 22740690405fSSara Sharon reorder_buf->mvm = mvm; 2275b915c101SSara Sharon reorder_buf->queue = i; 2276b915c101SSara Sharon reorder_buf->sta_id = sta_id; 22775d43eab6SSara Sharon reorder_buf->valid = false; 2278b915c101SSara Sharon for (j = 0; j < reorder_buf->buf_size; j++) 2279b915c101SSara Sharon __skb_queue_head_init(&reorder_buf->entries[j]); 2280b915c101SSara Sharon } 228110b2b201SSara Sharon } 228210b2b201SSara Sharon 2283e705c121SKalle Valo int iwl_mvm_sta_rx_agg(struct iwl_mvm *mvm, struct ieee80211_sta *sta, 228410b2b201SSara Sharon int tid, u16 ssn, bool start, u8 buf_size, u16 timeout) 2285e705c121SKalle Valo { 2286e705c121SKalle Valo struct iwl_mvm_sta *mvm_sta = iwl_mvm_sta_from_mac80211(sta); 2287e705c121SKalle Valo struct iwl_mvm_add_sta_cmd cmd = {}; 228810b2b201SSara Sharon struct iwl_mvm_baid_data *baid_data = NULL; 2289e705c121SKalle Valo int ret; 2290e705c121SKalle Valo u32 status; 2291e705c121SKalle Valo 2292e705c121SKalle Valo lockdep_assert_held(&mvm->mutex); 2293e705c121SKalle Valo 2294e705c121SKalle Valo if (start && mvm->rx_ba_sessions >= IWL_MAX_RX_BA_SESSIONS) { 2295e705c121SKalle Valo IWL_WARN(mvm, "Not enough RX BA SESSIONS\n"); 2296e705c121SKalle Valo return -ENOSPC; 2297e705c121SKalle Valo } 2298e705c121SKalle Valo 229910b2b201SSara Sharon if (iwl_mvm_has_new_rx_api(mvm) && start) { 230010b2b201SSara Sharon /* 230110b2b201SSara Sharon * Allocate here so if allocation fails we can bail out early 230210b2b201SSara Sharon * before starting the BA session in the firmware 230310b2b201SSara Sharon */ 2304b915c101SSara Sharon baid_data = kzalloc(sizeof(*baid_data) + 2305b915c101SSara Sharon mvm->trans->num_rx_queues * 2306b915c101SSara Sharon sizeof(baid_data->reorder_buf[0]), 2307b915c101SSara Sharon GFP_KERNEL); 230810b2b201SSara Sharon if (!baid_data) 230910b2b201SSara Sharon return -ENOMEM; 231010b2b201SSara Sharon } 231110b2b201SSara Sharon 2312e705c121SKalle Valo cmd.mac_id_n_color = cpu_to_le32(mvm_sta->mac_id_n_color); 2313e705c121SKalle Valo cmd.sta_id = mvm_sta->sta_id; 2314e705c121SKalle Valo cmd.add_modify = STA_MODE_MODIFY; 2315e705c121SKalle Valo if (start) { 2316e705c121SKalle Valo cmd.add_immediate_ba_tid = (u8) tid; 2317e705c121SKalle Valo cmd.add_immediate_ba_ssn = cpu_to_le16(ssn); 2318854c5705SSara Sharon cmd.rx_ba_window = cpu_to_le16((u16)buf_size); 2319e705c121SKalle Valo } else { 2320e705c121SKalle Valo cmd.remove_immediate_ba_tid = (u8) tid; 2321e705c121SKalle Valo } 2322e705c121SKalle Valo cmd.modify_mask = start ? STA_MODIFY_ADD_BA_TID : 2323e705c121SKalle Valo STA_MODIFY_REMOVE_BA_TID; 2324e705c121SKalle Valo 2325e705c121SKalle Valo status = ADD_STA_SUCCESS; 2326854c5705SSara Sharon ret = iwl_mvm_send_cmd_pdu_status(mvm, ADD_STA, 2327854c5705SSara Sharon iwl_mvm_add_sta_cmd_size(mvm), 2328e705c121SKalle Valo &cmd, &status); 2329e705c121SKalle Valo if (ret) 233010b2b201SSara Sharon goto out_free; 2331e705c121SKalle Valo 2332837c4da9SSara Sharon switch (status & IWL_ADD_STA_STATUS_MASK) { 2333e705c121SKalle Valo case ADD_STA_SUCCESS: 233435263a03SSara Sharon IWL_DEBUG_HT(mvm, "RX BA Session %sed in fw\n", 2335e705c121SKalle Valo start ? "start" : "stopp"); 2336e705c121SKalle Valo break; 2337e705c121SKalle Valo case ADD_STA_IMMEDIATE_BA_FAILURE: 2338e705c121SKalle Valo IWL_WARN(mvm, "RX BA Session refused by fw\n"); 2339e705c121SKalle Valo ret = -ENOSPC; 2340e705c121SKalle Valo break; 2341e705c121SKalle Valo default: 2342e705c121SKalle Valo ret = -EIO; 2343e705c121SKalle Valo IWL_ERR(mvm, "RX BA Session failed %sing, status 0x%x\n", 2344e705c121SKalle Valo start ? "start" : "stopp", status); 2345e705c121SKalle Valo break; 2346e705c121SKalle Valo } 2347e705c121SKalle Valo 234810b2b201SSara Sharon if (ret) 234910b2b201SSara Sharon goto out_free; 235010b2b201SSara Sharon 235110b2b201SSara Sharon if (start) { 235210b2b201SSara Sharon u8 baid; 235310b2b201SSara Sharon 2354e705c121SKalle Valo mvm->rx_ba_sessions++; 235510b2b201SSara Sharon 235610b2b201SSara Sharon if (!iwl_mvm_has_new_rx_api(mvm)) 235710b2b201SSara Sharon return 0; 235810b2b201SSara Sharon 235910b2b201SSara Sharon if (WARN_ON(!(status & IWL_ADD_STA_BAID_VALID_MASK))) { 236010b2b201SSara Sharon ret = -EINVAL; 236110b2b201SSara Sharon goto out_free; 236210b2b201SSara Sharon } 236310b2b201SSara Sharon baid = (u8)((status & IWL_ADD_STA_BAID_MASK) >> 236410b2b201SSara Sharon IWL_ADD_STA_BAID_SHIFT); 236510b2b201SSara Sharon baid_data->baid = baid; 236610b2b201SSara Sharon baid_data->timeout = timeout; 236710b2b201SSara Sharon baid_data->last_rx = jiffies; 236872c240feSWei Yongjun setup_timer(&baid_data->session_timer, 236972c240feSWei Yongjun iwl_mvm_rx_agg_session_expired, 237072c240feSWei Yongjun (unsigned long)&mvm->baid_map[baid]); 237110b2b201SSara Sharon baid_data->mvm = mvm; 237210b2b201SSara Sharon baid_data->tid = tid; 237310b2b201SSara Sharon baid_data->sta_id = mvm_sta->sta_id; 237410b2b201SSara Sharon 237510b2b201SSara Sharon mvm_sta->tid_to_baid[tid] = baid; 237610b2b201SSara Sharon if (timeout) 237710b2b201SSara Sharon mod_timer(&baid_data->session_timer, 237810b2b201SSara Sharon TU_TO_EXP_TIME(timeout * 2)); 237910b2b201SSara Sharon 2380b915c101SSara Sharon iwl_mvm_init_reorder_buffer(mvm, mvm_sta->sta_id, 2381b915c101SSara Sharon baid_data, ssn, buf_size); 238210b2b201SSara Sharon /* 238310b2b201SSara Sharon * protect the BA data with RCU to cover a case where our 238410b2b201SSara Sharon * internal RX sync mechanism will timeout (not that it's 238510b2b201SSara Sharon * supposed to happen) and we will free the session data while 238610b2b201SSara Sharon * RX is being processed in parallel 238710b2b201SSara Sharon */ 238835263a03SSara Sharon IWL_DEBUG_HT(mvm, "Sta %d(%d) is assigned to BAID %d\n", 238935263a03SSara Sharon mvm_sta->sta_id, tid, baid); 239010b2b201SSara Sharon WARN_ON(rcu_access_pointer(mvm->baid_map[baid])); 239110b2b201SSara Sharon rcu_assign_pointer(mvm->baid_map[baid], baid_data); 239260dec523SSara Sharon } else { 239310b2b201SSara Sharon u8 baid = mvm_sta->tid_to_baid[tid]; 239410b2b201SSara Sharon 239560dec523SSara Sharon if (mvm->rx_ba_sessions > 0) 2396e705c121SKalle Valo /* check that restart flow didn't zero the counter */ 2397e705c121SKalle Valo mvm->rx_ba_sessions--; 239810b2b201SSara Sharon if (!iwl_mvm_has_new_rx_api(mvm)) 239910b2b201SSara Sharon return 0; 2400e705c121SKalle Valo 240110b2b201SSara Sharon if (WARN_ON(baid == IWL_RX_REORDER_DATA_INVALID_BAID)) 240210b2b201SSara Sharon return -EINVAL; 240310b2b201SSara Sharon 240410b2b201SSara Sharon baid_data = rcu_access_pointer(mvm->baid_map[baid]); 240510b2b201SSara Sharon if (WARN_ON(!baid_data)) 240610b2b201SSara Sharon return -EINVAL; 240710b2b201SSara Sharon 240810b2b201SSara Sharon /* synchronize all rx queues so we can safely delete */ 2409b915c101SSara Sharon iwl_mvm_free_reorder(mvm, baid_data); 241010b2b201SSara Sharon del_timer_sync(&baid_data->session_timer); 241110b2b201SSara Sharon RCU_INIT_POINTER(mvm->baid_map[baid], NULL); 241210b2b201SSara Sharon kfree_rcu(baid_data, rcu_head); 241335263a03SSara Sharon IWL_DEBUG_HT(mvm, "BAID %d is free\n", baid); 241410b2b201SSara Sharon } 241510b2b201SSara Sharon return 0; 241610b2b201SSara Sharon 241710b2b201SSara Sharon out_free: 241810b2b201SSara Sharon kfree(baid_data); 2419e705c121SKalle Valo return ret; 2420e705c121SKalle Valo } 2421e705c121SKalle Valo 24229794c64fSLiad Kaufman int iwl_mvm_sta_tx_agg(struct iwl_mvm *mvm, struct ieee80211_sta *sta, 2423e705c121SKalle Valo int tid, u8 queue, bool start) 2424e705c121SKalle Valo { 2425e705c121SKalle Valo struct iwl_mvm_sta *mvm_sta = iwl_mvm_sta_from_mac80211(sta); 2426e705c121SKalle Valo struct iwl_mvm_add_sta_cmd cmd = {}; 2427e705c121SKalle Valo int ret; 2428e705c121SKalle Valo u32 status; 2429e705c121SKalle Valo 2430e705c121SKalle Valo lockdep_assert_held(&mvm->mutex); 2431e705c121SKalle Valo 2432e705c121SKalle Valo if (start) { 2433e705c121SKalle Valo mvm_sta->tfd_queue_msk |= BIT(queue); 2434e705c121SKalle Valo mvm_sta->tid_disable_agg &= ~BIT(tid); 2435e705c121SKalle Valo } else { 2436cf961e16SLiad Kaufman /* In DQA-mode the queue isn't removed on agg termination */ 2437cf961e16SLiad Kaufman if (!iwl_mvm_is_dqa_supported(mvm)) 2438e705c121SKalle Valo mvm_sta->tfd_queue_msk &= ~BIT(queue); 2439e705c121SKalle Valo mvm_sta->tid_disable_agg |= BIT(tid); 2440e705c121SKalle Valo } 2441e705c121SKalle Valo 2442e705c121SKalle Valo cmd.mac_id_n_color = cpu_to_le32(mvm_sta->mac_id_n_color); 2443e705c121SKalle Valo cmd.sta_id = mvm_sta->sta_id; 2444e705c121SKalle Valo cmd.add_modify = STA_MODE_MODIFY; 2445bb49701bSSara Sharon if (!iwl_mvm_has_new_tx_api(mvm)) 2446bb49701bSSara Sharon cmd.modify_mask = STA_MODIFY_QUEUES; 2447bb49701bSSara Sharon cmd.modify_mask |= STA_MODIFY_TID_DISABLE_TX; 2448e705c121SKalle Valo cmd.tfd_queue_msk = cpu_to_le32(mvm_sta->tfd_queue_msk); 2449e705c121SKalle Valo cmd.tid_disable_tx = cpu_to_le16(mvm_sta->tid_disable_agg); 2450e705c121SKalle Valo 2451e705c121SKalle Valo status = ADD_STA_SUCCESS; 2452854c5705SSara Sharon ret = iwl_mvm_send_cmd_pdu_status(mvm, ADD_STA, 2453854c5705SSara Sharon iwl_mvm_add_sta_cmd_size(mvm), 2454e705c121SKalle Valo &cmd, &status); 2455e705c121SKalle Valo if (ret) 2456e705c121SKalle Valo return ret; 2457e705c121SKalle Valo 2458837c4da9SSara Sharon switch (status & IWL_ADD_STA_STATUS_MASK) { 2459e705c121SKalle Valo case ADD_STA_SUCCESS: 2460e705c121SKalle Valo break; 2461e705c121SKalle Valo default: 2462e705c121SKalle Valo ret = -EIO; 2463e705c121SKalle Valo IWL_ERR(mvm, "TX BA Session failed %sing, status 0x%x\n", 2464e705c121SKalle Valo start ? "start" : "stopp", status); 2465e705c121SKalle Valo break; 2466e705c121SKalle Valo } 2467e705c121SKalle Valo 2468e705c121SKalle Valo return ret; 2469e705c121SKalle Valo } 2470e705c121SKalle Valo 2471e705c121SKalle Valo const u8 tid_to_mac80211_ac[] = { 2472e705c121SKalle Valo IEEE80211_AC_BE, 2473e705c121SKalle Valo IEEE80211_AC_BK, 2474e705c121SKalle Valo IEEE80211_AC_BK, 2475e705c121SKalle Valo IEEE80211_AC_BE, 2476e705c121SKalle Valo IEEE80211_AC_VI, 2477e705c121SKalle Valo IEEE80211_AC_VI, 2478e705c121SKalle Valo IEEE80211_AC_VO, 2479e705c121SKalle Valo IEEE80211_AC_VO, 24809794c64fSLiad Kaufman IEEE80211_AC_VO, /* We treat MGMT as TID 8, which is set as AC_VO */ 2481e705c121SKalle Valo }; 2482e705c121SKalle Valo 2483e705c121SKalle Valo static const u8 tid_to_ucode_ac[] = { 2484e705c121SKalle Valo AC_BE, 2485e705c121SKalle Valo AC_BK, 2486e705c121SKalle Valo AC_BK, 2487e705c121SKalle Valo AC_BE, 2488e705c121SKalle Valo AC_VI, 2489e705c121SKalle Valo AC_VI, 2490e705c121SKalle Valo AC_VO, 2491e705c121SKalle Valo AC_VO, 2492e705c121SKalle Valo }; 2493e705c121SKalle Valo 2494e705c121SKalle Valo int iwl_mvm_sta_tx_agg_start(struct iwl_mvm *mvm, struct ieee80211_vif *vif, 2495e705c121SKalle Valo struct ieee80211_sta *sta, u16 tid, u16 *ssn) 2496e705c121SKalle Valo { 2497e705c121SKalle Valo struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta); 2498e705c121SKalle Valo struct iwl_mvm_tid_data *tid_data; 2499e705c121SKalle Valo int txq_id; 2500e705c121SKalle Valo int ret; 2501e705c121SKalle Valo 2502e705c121SKalle Valo if (WARN_ON_ONCE(tid >= IWL_MAX_TID_COUNT)) 2503e705c121SKalle Valo return -EINVAL; 2504e705c121SKalle Valo 2505e705c121SKalle Valo if (mvmsta->tid_data[tid].state != IWL_AGG_OFF) { 2506e705c121SKalle Valo IWL_ERR(mvm, "Start AGG when state is not IWL_AGG_OFF %d!\n", 2507e705c121SKalle Valo mvmsta->tid_data[tid].state); 2508e705c121SKalle Valo return -ENXIO; 2509e705c121SKalle Valo } 2510e705c121SKalle Valo 2511e705c121SKalle Valo lockdep_assert_held(&mvm->mutex); 2512e705c121SKalle Valo 2513e705c121SKalle Valo spin_lock_bh(&mvmsta->lock); 2514e705c121SKalle Valo 2515e705c121SKalle Valo /* possible race condition - we entered D0i3 while starting agg */ 2516e705c121SKalle Valo if (test_bit(IWL_MVM_STATUS_IN_D0I3, &mvm->status)) { 2517e705c121SKalle Valo spin_unlock_bh(&mvmsta->lock); 2518e705c121SKalle Valo IWL_ERR(mvm, "Entered D0i3 while starting Tx agg\n"); 2519e705c121SKalle Valo return -EIO; 2520e705c121SKalle Valo } 2521e705c121SKalle Valo 25229f9af3d7SLiad Kaufman spin_lock(&mvm->queue_info_lock); 2523e705c121SKalle Valo 2524cf961e16SLiad Kaufman /* 2525cf961e16SLiad Kaufman * Note the possible cases: 2526cf961e16SLiad Kaufman * 1. In DQA mode with an enabled TXQ - TXQ needs to become agg'ed 2527cf961e16SLiad Kaufman * 2. Non-DQA mode: the TXQ hasn't yet been enabled, so find a free 2528cf961e16SLiad Kaufman * one and mark it as reserved 2529cf961e16SLiad Kaufman * 3. In DQA mode, but no traffic yet on this TID: same treatment as in 2530cf961e16SLiad Kaufman * non-DQA mode, since the TXQ hasn't yet been allocated 253134e10860SSara Sharon * Don't support case 3 for new TX path as it is not expected to happen 253234e10860SSara Sharon * and aggregation will be offloaded soon anyway 2533cf961e16SLiad Kaufman */ 2534cf961e16SLiad Kaufman txq_id = mvmsta->tid_data[tid].txq_id; 253534e10860SSara Sharon if (iwl_mvm_has_new_tx_api(mvm)) { 253634e10860SSara Sharon if (txq_id == IWL_MVM_INVALID_QUEUE) { 253734e10860SSara Sharon ret = -ENXIO; 253834e10860SSara Sharon goto release_locks; 253934e10860SSara Sharon } 254034e10860SSara Sharon } else if (iwl_mvm_is_dqa_supported(mvm) && 254134e10860SSara Sharon unlikely(mvm->queue_info[txq_id].status == 254234e10860SSara Sharon IWL_MVM_QUEUE_SHARED)) { 25439f9af3d7SLiad Kaufman ret = -ENXIO; 25449f9af3d7SLiad Kaufman IWL_DEBUG_TX_QUEUES(mvm, 25459f9af3d7SLiad Kaufman "Can't start tid %d agg on shared queue!\n", 25469f9af3d7SLiad Kaufman tid); 25479f9af3d7SLiad Kaufman goto release_locks; 25489f9af3d7SLiad Kaufman } else if (!iwl_mvm_is_dqa_supported(mvm) || 2549cf961e16SLiad Kaufman mvm->queue_info[txq_id].status != IWL_MVM_QUEUE_READY) { 25509794c64fSLiad Kaufman txq_id = iwl_mvm_find_free_queue(mvm, mvmsta->sta_id, 25519794c64fSLiad Kaufman mvm->first_agg_queue, 2552e705c121SKalle Valo mvm->last_agg_queue); 2553e705c121SKalle Valo if (txq_id < 0) { 2554e705c121SKalle Valo ret = txq_id; 2555e705c121SKalle Valo IWL_ERR(mvm, "Failed to allocate agg queue\n"); 2556e705c121SKalle Valo goto release_locks; 2557e705c121SKalle Valo } 255801796ff2SSara Sharon /* 255901796ff2SSara Sharon * TXQ shouldn't be in inactive mode for non-DQA, so getting 256001796ff2SSara Sharon * an inactive queue from iwl_mvm_find_free_queue() is 256101796ff2SSara Sharon * certainly a bug 256201796ff2SSara Sharon */ 256301796ff2SSara Sharon WARN_ON(mvm->queue_info[txq_id].status == 256401796ff2SSara Sharon IWL_MVM_QUEUE_INACTIVE); 2565cf961e16SLiad Kaufman 2566cf961e16SLiad Kaufman /* TXQ hasn't yet been enabled, so mark it only as reserved */ 2567cf961e16SLiad Kaufman mvm->queue_info[txq_id].status = IWL_MVM_QUEUE_RESERVED; 2568cf961e16SLiad Kaufman } 25699f9af3d7SLiad Kaufman 25709f9af3d7SLiad Kaufman spin_unlock(&mvm->queue_info_lock); 2571e705c121SKalle Valo 2572cf961e16SLiad Kaufman IWL_DEBUG_TX_QUEUES(mvm, 2573cf961e16SLiad Kaufman "AGG for tid %d will be on queue #%d\n", 2574cf961e16SLiad Kaufman tid, txq_id); 2575cf961e16SLiad Kaufman 2576e705c121SKalle Valo tid_data = &mvmsta->tid_data[tid]; 2577e705c121SKalle Valo tid_data->ssn = IEEE80211_SEQ_TO_SN(tid_data->seq_number); 2578e705c121SKalle Valo tid_data->txq_id = txq_id; 2579e705c121SKalle Valo *ssn = tid_data->ssn; 2580e705c121SKalle Valo 2581e705c121SKalle Valo IWL_DEBUG_TX_QUEUES(mvm, 2582e705c121SKalle Valo "Start AGG: sta %d tid %d queue %d - ssn = %d, next_recl = %d\n", 2583e705c121SKalle Valo mvmsta->sta_id, tid, txq_id, tid_data->ssn, 2584e705c121SKalle Valo tid_data->next_reclaimed); 2585e705c121SKalle Valo 2586e705c121SKalle Valo if (tid_data->ssn == tid_data->next_reclaimed) { 2587e705c121SKalle Valo tid_data->state = IWL_AGG_STARTING; 2588e705c121SKalle Valo ieee80211_start_tx_ba_cb_irqsafe(vif, sta->addr, tid); 2589e705c121SKalle Valo } else { 2590e705c121SKalle Valo tid_data->state = IWL_EMPTYING_HW_QUEUE_ADDBA; 2591e705c121SKalle Valo } 2592e705c121SKalle Valo 2593e705c121SKalle Valo ret = 0; 25949f9af3d7SLiad Kaufman goto out; 2595e705c121SKalle Valo 2596e705c121SKalle Valo release_locks: 25979f9af3d7SLiad Kaufman spin_unlock(&mvm->queue_info_lock); 25989f9af3d7SLiad Kaufman out: 2599e705c121SKalle Valo spin_unlock_bh(&mvmsta->lock); 2600e705c121SKalle Valo 2601e705c121SKalle Valo return ret; 2602e705c121SKalle Valo } 2603e705c121SKalle Valo 2604e705c121SKalle Valo int iwl_mvm_sta_tx_agg_oper(struct iwl_mvm *mvm, struct ieee80211_vif *vif, 2605bb81bb68SEmmanuel Grumbach struct ieee80211_sta *sta, u16 tid, u8 buf_size, 2606bb81bb68SEmmanuel Grumbach bool amsdu) 2607e705c121SKalle Valo { 2608e705c121SKalle Valo struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta); 2609e705c121SKalle Valo struct iwl_mvm_tid_data *tid_data = &mvmsta->tid_data[tid]; 2610e705c121SKalle Valo unsigned int wdg_timeout = 2611e705c121SKalle Valo iwl_mvm_get_wd_timeout(mvm, vif, sta->tdls, false); 2612eea76c36SEmmanuel Grumbach int queue, ret; 2613cf961e16SLiad Kaufman bool alloc_queue = true; 26149f9af3d7SLiad Kaufman enum iwl_mvm_queue_status queue_status; 2615e705c121SKalle Valo u16 ssn; 2616e705c121SKalle Valo 2617eea76c36SEmmanuel Grumbach struct iwl_trans_txq_scd_cfg cfg = { 2618eea76c36SEmmanuel Grumbach .sta_id = mvmsta->sta_id, 2619eea76c36SEmmanuel Grumbach .tid = tid, 2620eea76c36SEmmanuel Grumbach .frame_limit = buf_size, 2621eea76c36SEmmanuel Grumbach .aggregate = true, 2622eea76c36SEmmanuel Grumbach }; 2623eea76c36SEmmanuel Grumbach 2624e705c121SKalle Valo BUILD_BUG_ON((sizeof(mvmsta->agg_tids) * BITS_PER_BYTE) 2625e705c121SKalle Valo != IWL_MAX_TID_COUNT); 2626e705c121SKalle Valo 2627e705c121SKalle Valo buf_size = min_t(int, buf_size, LINK_QUAL_AGG_FRAME_LIMIT_DEF); 2628e705c121SKalle Valo 2629e705c121SKalle Valo spin_lock_bh(&mvmsta->lock); 2630e705c121SKalle Valo ssn = tid_data->ssn; 2631e705c121SKalle Valo queue = tid_data->txq_id; 2632e705c121SKalle Valo tid_data->state = IWL_AGG_ON; 2633e705c121SKalle Valo mvmsta->agg_tids |= BIT(tid); 2634e705c121SKalle Valo tid_data->ssn = 0xffff; 2635bb81bb68SEmmanuel Grumbach tid_data->amsdu_in_ampdu_allowed = amsdu; 2636e705c121SKalle Valo spin_unlock_bh(&mvmsta->lock); 2637e705c121SKalle Valo 263834e10860SSara Sharon if (iwl_mvm_has_new_tx_api(mvm)) { 263934e10860SSara Sharon /* 264034e10860SSara Sharon * If no queue iwl_mvm_sta_tx_agg_start() would have failed so 264134e10860SSara Sharon * no need to check queue's status 264234e10860SSara Sharon */ 264334e10860SSara Sharon if (buf_size < mvmsta->max_agg_bufsize) 264434e10860SSara Sharon return -ENOTSUPP; 264534e10860SSara Sharon 264634e10860SSara Sharon ret = iwl_mvm_sta_tx_agg(mvm, sta, tid, queue, true); 264734e10860SSara Sharon if (ret) 264834e10860SSara Sharon return -EIO; 264934e10860SSara Sharon goto out; 265034e10860SSara Sharon } 265134e10860SSara Sharon 2652eea76c36SEmmanuel Grumbach cfg.fifo = iwl_mvm_ac_to_tx_fifo[tid_to_mac80211_ac[tid]]; 2653e705c121SKalle Valo 26549f9af3d7SLiad Kaufman spin_lock_bh(&mvm->queue_info_lock); 26559f9af3d7SLiad Kaufman queue_status = mvm->queue_info[queue].status; 26569f9af3d7SLiad Kaufman spin_unlock_bh(&mvm->queue_info_lock); 26579f9af3d7SLiad Kaufman 2658cf961e16SLiad Kaufman /* In DQA mode, the existing queue might need to be reconfigured */ 2659cf961e16SLiad Kaufman if (iwl_mvm_is_dqa_supported(mvm)) { 2660cf961e16SLiad Kaufman /* Maybe there is no need to even alloc a queue... */ 2661cf961e16SLiad Kaufman if (mvm->queue_info[queue].status == IWL_MVM_QUEUE_READY) 2662cf961e16SLiad Kaufman alloc_queue = false; 2663cf961e16SLiad Kaufman 2664cf961e16SLiad Kaufman /* 2665cf961e16SLiad Kaufman * Only reconfig the SCD for the queue if the window size has 2666cf961e16SLiad Kaufman * changed from current (become smaller) 2667cf961e16SLiad Kaufman */ 2668cf961e16SLiad Kaufman if (!alloc_queue && buf_size < mvmsta->max_agg_bufsize) { 2669cf961e16SLiad Kaufman /* 2670cf961e16SLiad Kaufman * If reconfiguring an existing queue, it first must be 2671cf961e16SLiad Kaufman * drained 2672cf961e16SLiad Kaufman */ 2673a1a57877SSara Sharon ret = iwl_trans_wait_tx_queues_empty(mvm->trans, 2674cf961e16SLiad Kaufman BIT(queue)); 2675cf961e16SLiad Kaufman if (ret) { 2676cf961e16SLiad Kaufman IWL_ERR(mvm, 2677cf961e16SLiad Kaufman "Error draining queue before reconfig\n"); 2678cf961e16SLiad Kaufman return ret; 2679cf961e16SLiad Kaufman } 2680cf961e16SLiad Kaufman 2681cf961e16SLiad Kaufman ret = iwl_mvm_reconfig_scd(mvm, queue, cfg.fifo, 2682cf961e16SLiad Kaufman mvmsta->sta_id, tid, 2683cf961e16SLiad Kaufman buf_size, ssn); 2684cf961e16SLiad Kaufman if (ret) { 2685cf961e16SLiad Kaufman IWL_ERR(mvm, 2686cf961e16SLiad Kaufman "Error reconfiguring TXQ #%d\n", queue); 2687cf961e16SLiad Kaufman return ret; 2688cf961e16SLiad Kaufman } 2689cf961e16SLiad Kaufman } 2690cf961e16SLiad Kaufman } 2691cf961e16SLiad Kaufman 2692cf961e16SLiad Kaufman if (alloc_queue) 2693cf961e16SLiad Kaufman iwl_mvm_enable_txq(mvm, queue, 2694cf961e16SLiad Kaufman vif->hw_queue[tid_to_mac80211_ac[tid]], ssn, 2695cf961e16SLiad Kaufman &cfg, wdg_timeout); 2696e705c121SKalle Valo 26979f9af3d7SLiad Kaufman /* Send ADD_STA command to enable aggs only if the queue isn't shared */ 26989f9af3d7SLiad Kaufman if (queue_status != IWL_MVM_QUEUE_SHARED) { 2699e705c121SKalle Valo ret = iwl_mvm_sta_tx_agg(mvm, sta, tid, queue, true); 2700e705c121SKalle Valo if (ret) 2701e705c121SKalle Valo return -EIO; 27029f9af3d7SLiad Kaufman } 2703e705c121SKalle Valo 2704e705c121SKalle Valo /* No need to mark as reserved */ 2705e705c121SKalle Valo spin_lock_bh(&mvm->queue_info_lock); 2706cf961e16SLiad Kaufman mvm->queue_info[queue].status = IWL_MVM_QUEUE_READY; 2707e705c121SKalle Valo spin_unlock_bh(&mvm->queue_info_lock); 2708e705c121SKalle Valo 270934e10860SSara Sharon out: 2710e705c121SKalle Valo /* 2711e705c121SKalle Valo * Even though in theory the peer could have different 2712e705c121SKalle Valo * aggregation reorder buffer sizes for different sessions, 2713e705c121SKalle Valo * our ucode doesn't allow for that and has a global limit 2714e705c121SKalle Valo * for each station. Therefore, use the minimum of all the 2715e705c121SKalle Valo * aggregation sessions and our default value. 2716e705c121SKalle Valo */ 2717e705c121SKalle Valo mvmsta->max_agg_bufsize = 2718e705c121SKalle Valo min(mvmsta->max_agg_bufsize, buf_size); 2719e705c121SKalle Valo mvmsta->lq_sta.lq.agg_frame_cnt_limit = mvmsta->max_agg_bufsize; 2720e705c121SKalle Valo 2721e705c121SKalle Valo IWL_DEBUG_HT(mvm, "Tx aggregation enabled on ra = %pM tid = %d\n", 2722e705c121SKalle Valo sta->addr, tid); 2723e705c121SKalle Valo 2724e705c121SKalle Valo return iwl_mvm_send_lq_cmd(mvm, &mvmsta->lq_sta.lq, false); 2725e705c121SKalle Valo } 2726e705c121SKalle Valo 272734e10860SSara Sharon static void iwl_mvm_unreserve_agg_queue(struct iwl_mvm *mvm, 272834e10860SSara Sharon struct iwl_mvm_sta *mvmsta, 272934e10860SSara Sharon u16 txq_id) 273034e10860SSara Sharon { 273134e10860SSara Sharon if (iwl_mvm_has_new_tx_api(mvm)) 273234e10860SSara Sharon return; 273334e10860SSara Sharon 273434e10860SSara Sharon spin_lock_bh(&mvm->queue_info_lock); 273534e10860SSara Sharon /* 273634e10860SSara Sharon * The TXQ is marked as reserved only if no traffic came through yet 273734e10860SSara Sharon * This means no traffic has been sent on this TID (agg'd or not), so 273834e10860SSara Sharon * we no longer have use for the queue. Since it hasn't even been 273934e10860SSara Sharon * allocated through iwl_mvm_enable_txq, so we can just mark it back as 274034e10860SSara Sharon * free. 274134e10860SSara Sharon */ 274234e10860SSara Sharon if (mvm->queue_info[txq_id].status == IWL_MVM_QUEUE_RESERVED) 274334e10860SSara Sharon mvm->queue_info[txq_id].status = IWL_MVM_QUEUE_FREE; 274434e10860SSara Sharon 274534e10860SSara Sharon spin_unlock_bh(&mvm->queue_info_lock); 274634e10860SSara Sharon } 274734e10860SSara Sharon 2748e705c121SKalle Valo int iwl_mvm_sta_tx_agg_stop(struct iwl_mvm *mvm, struct ieee80211_vif *vif, 2749e705c121SKalle Valo struct ieee80211_sta *sta, u16 tid) 2750e705c121SKalle Valo { 2751e705c121SKalle Valo struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta); 2752e705c121SKalle Valo struct iwl_mvm_tid_data *tid_data = &mvmsta->tid_data[tid]; 2753e705c121SKalle Valo u16 txq_id; 2754e705c121SKalle Valo int err; 2755e705c121SKalle Valo 2756e705c121SKalle Valo /* 2757e705c121SKalle Valo * If mac80211 is cleaning its state, then say that we finished since 2758e705c121SKalle Valo * our state has been cleared anyway. 2759e705c121SKalle Valo */ 2760e705c121SKalle Valo if (test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status)) { 2761e705c121SKalle Valo ieee80211_stop_tx_ba_cb_irqsafe(vif, sta->addr, tid); 2762e705c121SKalle Valo return 0; 2763e705c121SKalle Valo } 2764e705c121SKalle Valo 2765e705c121SKalle Valo spin_lock_bh(&mvmsta->lock); 2766e705c121SKalle Valo 2767e705c121SKalle Valo txq_id = tid_data->txq_id; 2768e705c121SKalle Valo 2769e705c121SKalle Valo IWL_DEBUG_TX_QUEUES(mvm, "Stop AGG: sta %d tid %d q %d state %d\n", 2770e705c121SKalle Valo mvmsta->sta_id, tid, txq_id, tid_data->state); 2771e705c121SKalle Valo 2772e705c121SKalle Valo mvmsta->agg_tids &= ~BIT(tid); 2773e705c121SKalle Valo 277434e10860SSara Sharon iwl_mvm_unreserve_agg_queue(mvm, mvmsta, txq_id); 2775e705c121SKalle Valo 2776e705c121SKalle Valo switch (tid_data->state) { 2777e705c121SKalle Valo case IWL_AGG_ON: 2778e705c121SKalle Valo tid_data->ssn = IEEE80211_SEQ_TO_SN(tid_data->seq_number); 2779e705c121SKalle Valo 2780e705c121SKalle Valo IWL_DEBUG_TX_QUEUES(mvm, 2781e705c121SKalle Valo "ssn = %d, next_recl = %d\n", 2782e705c121SKalle Valo tid_data->ssn, tid_data->next_reclaimed); 2783e705c121SKalle Valo 2784e705c121SKalle Valo /* There are still packets for this RA / TID in the HW */ 2785e705c121SKalle Valo if (tid_data->ssn != tid_data->next_reclaimed) { 2786e705c121SKalle Valo tid_data->state = IWL_EMPTYING_HW_QUEUE_DELBA; 2787e705c121SKalle Valo err = 0; 2788e705c121SKalle Valo break; 2789e705c121SKalle Valo } 2790e705c121SKalle Valo 2791e705c121SKalle Valo tid_data->ssn = 0xffff; 2792e705c121SKalle Valo tid_data->state = IWL_AGG_OFF; 2793e705c121SKalle Valo spin_unlock_bh(&mvmsta->lock); 2794e705c121SKalle Valo 2795e705c121SKalle Valo ieee80211_stop_tx_ba_cb_irqsafe(vif, sta->addr, tid); 2796e705c121SKalle Valo 2797e705c121SKalle Valo iwl_mvm_sta_tx_agg(mvm, sta, tid, txq_id, false); 2798e705c121SKalle Valo 2799cf961e16SLiad Kaufman if (!iwl_mvm_is_dqa_supported(mvm)) { 2800cf961e16SLiad Kaufman int mac_queue = vif->hw_queue[tid_to_mac80211_ac[tid]]; 2801cf961e16SLiad Kaufman 2802cf961e16SLiad Kaufman iwl_mvm_disable_txq(mvm, txq_id, mac_queue, tid, 0); 2803cf961e16SLiad Kaufman } 2804e705c121SKalle Valo return 0; 2805e705c121SKalle Valo case IWL_AGG_STARTING: 2806e705c121SKalle Valo case IWL_EMPTYING_HW_QUEUE_ADDBA: 2807e705c121SKalle Valo /* 2808e705c121SKalle Valo * The agg session has been stopped before it was set up. This 2809e705c121SKalle Valo * can happen when the AddBA timer times out for example. 2810e705c121SKalle Valo */ 2811e705c121SKalle Valo 2812e705c121SKalle Valo /* No barriers since we are under mutex */ 2813e705c121SKalle Valo lockdep_assert_held(&mvm->mutex); 2814e705c121SKalle Valo 2815e705c121SKalle Valo ieee80211_stop_tx_ba_cb_irqsafe(vif, sta->addr, tid); 2816e705c121SKalle Valo tid_data->state = IWL_AGG_OFF; 2817e705c121SKalle Valo err = 0; 2818e705c121SKalle Valo break; 2819e705c121SKalle Valo default: 2820e705c121SKalle Valo IWL_ERR(mvm, 2821e705c121SKalle Valo "Stopping AGG while state not ON or starting for %d on %d (%d)\n", 2822e705c121SKalle Valo mvmsta->sta_id, tid, tid_data->state); 2823e705c121SKalle Valo IWL_ERR(mvm, 2824e705c121SKalle Valo "\ttid_data->txq_id = %d\n", tid_data->txq_id); 2825e705c121SKalle Valo err = -EINVAL; 2826e705c121SKalle Valo } 2827e705c121SKalle Valo 2828e705c121SKalle Valo spin_unlock_bh(&mvmsta->lock); 2829e705c121SKalle Valo 2830e705c121SKalle Valo return err; 2831e705c121SKalle Valo } 2832e705c121SKalle Valo 2833e705c121SKalle Valo int iwl_mvm_sta_tx_agg_flush(struct iwl_mvm *mvm, struct ieee80211_vif *vif, 2834e705c121SKalle Valo struct ieee80211_sta *sta, u16 tid) 2835e705c121SKalle Valo { 2836e705c121SKalle Valo struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta); 2837e705c121SKalle Valo struct iwl_mvm_tid_data *tid_data = &mvmsta->tid_data[tid]; 2838e705c121SKalle Valo u16 txq_id; 2839e705c121SKalle Valo enum iwl_mvm_agg_state old_state; 2840e705c121SKalle Valo 2841e705c121SKalle Valo /* 2842e705c121SKalle Valo * First set the agg state to OFF to avoid calling 2843e705c121SKalle Valo * ieee80211_stop_tx_ba_cb in iwl_mvm_check_ratid_empty. 2844e705c121SKalle Valo */ 2845e705c121SKalle Valo spin_lock_bh(&mvmsta->lock); 2846e705c121SKalle Valo txq_id = tid_data->txq_id; 2847e705c121SKalle Valo IWL_DEBUG_TX_QUEUES(mvm, "Flush AGG: sta %d tid %d q %d state %d\n", 2848e705c121SKalle Valo mvmsta->sta_id, tid, txq_id, tid_data->state); 2849e705c121SKalle Valo old_state = tid_data->state; 2850e705c121SKalle Valo tid_data->state = IWL_AGG_OFF; 2851e705c121SKalle Valo mvmsta->agg_tids &= ~BIT(tid); 2852e705c121SKalle Valo spin_unlock_bh(&mvmsta->lock); 2853e705c121SKalle Valo 285434e10860SSara Sharon iwl_mvm_unreserve_agg_queue(mvm, mvmsta, txq_id); 2855e705c121SKalle Valo 2856e705c121SKalle Valo if (old_state >= IWL_AGG_ON) { 2857e705c121SKalle Valo iwl_mvm_drain_sta(mvm, mvmsta, true); 2858e705c121SKalle Valo if (iwl_mvm_flush_tx_path(mvm, BIT(txq_id), 0)) 2859e705c121SKalle Valo IWL_ERR(mvm, "Couldn't flush the AGG queue\n"); 2860a1a57877SSara Sharon iwl_trans_wait_tx_queues_empty(mvm->trans, 2861e705c121SKalle Valo mvmsta->tfd_queue_msk); 2862e705c121SKalle Valo iwl_mvm_drain_sta(mvm, mvmsta, false); 2863e705c121SKalle Valo 2864e705c121SKalle Valo iwl_mvm_sta_tx_agg(mvm, sta, tid, txq_id, false); 2865e705c121SKalle Valo 2866cf961e16SLiad Kaufman if (!iwl_mvm_is_dqa_supported(mvm)) { 2867cf961e16SLiad Kaufman int mac_queue = vif->hw_queue[tid_to_mac80211_ac[tid]]; 2868cf961e16SLiad Kaufman 2869cf961e16SLiad Kaufman iwl_mvm_disable_txq(mvm, tid_data->txq_id, mac_queue, 2870cf961e16SLiad Kaufman tid, 0); 2871cf961e16SLiad Kaufman } 2872e705c121SKalle Valo } 2873e705c121SKalle Valo 2874e705c121SKalle Valo return 0; 2875e705c121SKalle Valo } 2876e705c121SKalle Valo 2877e705c121SKalle Valo static int iwl_mvm_set_fw_key_idx(struct iwl_mvm *mvm) 2878e705c121SKalle Valo { 2879e705c121SKalle Valo int i, max = -1, max_offs = -1; 2880e705c121SKalle Valo 2881e705c121SKalle Valo lockdep_assert_held(&mvm->mutex); 2882e705c121SKalle Valo 2883e705c121SKalle Valo /* Pick the unused key offset with the highest 'deleted' 2884e705c121SKalle Valo * counter. Every time a key is deleted, all the counters 2885e705c121SKalle Valo * are incremented and the one that was just deleted is 2886e705c121SKalle Valo * reset to zero. Thus, the highest counter is the one 2887e705c121SKalle Valo * that was deleted longest ago. Pick that one. 2888e705c121SKalle Valo */ 2889e705c121SKalle Valo for (i = 0; i < STA_KEY_MAX_NUM; i++) { 2890e705c121SKalle Valo if (test_bit(i, mvm->fw_key_table)) 2891e705c121SKalle Valo continue; 2892e705c121SKalle Valo if (mvm->fw_key_deleted[i] > max) { 2893e705c121SKalle Valo max = mvm->fw_key_deleted[i]; 2894e705c121SKalle Valo max_offs = i; 2895e705c121SKalle Valo } 2896e705c121SKalle Valo } 2897e705c121SKalle Valo 2898e705c121SKalle Valo if (max_offs < 0) 2899e705c121SKalle Valo return STA_KEY_IDX_INVALID; 2900e705c121SKalle Valo 2901e705c121SKalle Valo return max_offs; 2902e705c121SKalle Valo } 2903e705c121SKalle Valo 29045f7a1847SJohannes Berg static struct iwl_mvm_sta *iwl_mvm_get_key_sta(struct iwl_mvm *mvm, 29054615fd15SEmmanuel Grumbach struct ieee80211_vif *vif, 2906e705c121SKalle Valo struct ieee80211_sta *sta) 2907e705c121SKalle Valo { 2908e705c121SKalle Valo struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 2909e705c121SKalle Valo 29105f7a1847SJohannes Berg if (sta) 29115f7a1847SJohannes Berg return iwl_mvm_sta_from_mac80211(sta); 2912e705c121SKalle Valo 2913e705c121SKalle Valo /* 2914e705c121SKalle Valo * The device expects GTKs for station interfaces to be 2915e705c121SKalle Valo * installed as GTKs for the AP station. If we have no 2916e705c121SKalle Valo * station ID, then use AP's station ID. 2917e705c121SKalle Valo */ 2918e705c121SKalle Valo if (vif->type == NL80211_IFTYPE_STATION && 29190ae98812SSara Sharon mvmvif->ap_sta_id != IWL_MVM_INVALID_STA) { 29204615fd15SEmmanuel Grumbach u8 sta_id = mvmvif->ap_sta_id; 29214615fd15SEmmanuel Grumbach 29227d6a1ab6SEmmanuel Grumbach sta = rcu_dereference_check(mvm->fw_id_to_mac_id[sta_id], 29237d6a1ab6SEmmanuel Grumbach lockdep_is_held(&mvm->mutex)); 29247d6a1ab6SEmmanuel Grumbach 29254615fd15SEmmanuel Grumbach /* 29264615fd15SEmmanuel Grumbach * It is possible that the 'sta' parameter is NULL, 29274615fd15SEmmanuel Grumbach * for example when a GTK is removed - the sta_id will then 29284615fd15SEmmanuel Grumbach * be the AP ID, and no station was passed by mac80211. 29294615fd15SEmmanuel Grumbach */ 29307d6a1ab6SEmmanuel Grumbach if (IS_ERR_OR_NULL(sta)) 29317d6a1ab6SEmmanuel Grumbach return NULL; 29327d6a1ab6SEmmanuel Grumbach 29337d6a1ab6SEmmanuel Grumbach return iwl_mvm_sta_from_mac80211(sta); 29344615fd15SEmmanuel Grumbach } 2935e705c121SKalle Valo 29365f7a1847SJohannes Berg return NULL; 2937e705c121SKalle Valo } 2938e705c121SKalle Valo 2939e705c121SKalle Valo static int iwl_mvm_send_sta_key(struct iwl_mvm *mvm, 2940e705c121SKalle Valo struct iwl_mvm_sta *mvm_sta, 294145c458b4SSara Sharon struct ieee80211_key_conf *key, bool mcast, 29424615fd15SEmmanuel Grumbach u32 tkip_iv32, u16 *tkip_p1k, u32 cmd_flags, 29434615fd15SEmmanuel Grumbach u8 key_offset) 2944e705c121SKalle Valo { 294545c458b4SSara Sharon union { 294645c458b4SSara Sharon struct iwl_mvm_add_sta_key_cmd_v1 cmd_v1; 294745c458b4SSara Sharon struct iwl_mvm_add_sta_key_cmd cmd; 294845c458b4SSara Sharon } u = {}; 2949e705c121SKalle Valo __le16 key_flags; 2950e705c121SKalle Valo int ret; 2951e705c121SKalle Valo u32 status; 2952e705c121SKalle Valo u16 keyidx; 295345c458b4SSara Sharon u64 pn = 0; 295445c458b4SSara Sharon int i, size; 295545c458b4SSara Sharon bool new_api = fw_has_api(&mvm->fw->ucode_capa, 295645c458b4SSara Sharon IWL_UCODE_TLV_API_TKIP_MIC_KEYS); 2957e705c121SKalle Valo 295845c458b4SSara Sharon keyidx = (key->keyidx << STA_KEY_FLG_KEYID_POS) & 2959e705c121SKalle Valo STA_KEY_FLG_KEYID_MSK; 2960e705c121SKalle Valo key_flags = cpu_to_le16(keyidx); 2961e705c121SKalle Valo key_flags |= cpu_to_le16(STA_KEY_FLG_WEP_KEY_MAP); 2962e705c121SKalle Valo 296345c458b4SSara Sharon switch (key->cipher) { 2964e705c121SKalle Valo case WLAN_CIPHER_SUITE_TKIP: 2965e705c121SKalle Valo key_flags |= cpu_to_le16(STA_KEY_FLG_TKIP); 296645c458b4SSara Sharon if (new_api) { 296745c458b4SSara Sharon memcpy((void *)&u.cmd.tx_mic_key, 296845c458b4SSara Sharon &key->key[NL80211_TKIP_DATA_OFFSET_TX_MIC_KEY], 296945c458b4SSara Sharon IWL_MIC_KEY_SIZE); 297045c458b4SSara Sharon 297145c458b4SSara Sharon memcpy((void *)&u.cmd.rx_mic_key, 297245c458b4SSara Sharon &key->key[NL80211_TKIP_DATA_OFFSET_RX_MIC_KEY], 297345c458b4SSara Sharon IWL_MIC_KEY_SIZE); 297445c458b4SSara Sharon pn = atomic64_read(&key->tx_pn); 297545c458b4SSara Sharon 297645c458b4SSara Sharon } else { 297745c458b4SSara Sharon u.cmd_v1.tkip_rx_tsc_byte2 = tkip_iv32; 2978e705c121SKalle Valo for (i = 0; i < 5; i++) 297945c458b4SSara Sharon u.cmd_v1.tkip_rx_ttak[i] = 298045c458b4SSara Sharon cpu_to_le16(tkip_p1k[i]); 298145c458b4SSara Sharon } 298245c458b4SSara Sharon memcpy(u.cmd.common.key, key->key, key->keylen); 2983e705c121SKalle Valo break; 2984e705c121SKalle Valo case WLAN_CIPHER_SUITE_CCMP: 2985e705c121SKalle Valo key_flags |= cpu_to_le16(STA_KEY_FLG_CCM); 298645c458b4SSara Sharon memcpy(u.cmd.common.key, key->key, key->keylen); 298745c458b4SSara Sharon if (new_api) 298845c458b4SSara Sharon pn = atomic64_read(&key->tx_pn); 2989e705c121SKalle Valo break; 2990e705c121SKalle Valo case WLAN_CIPHER_SUITE_WEP104: 2991e705c121SKalle Valo key_flags |= cpu_to_le16(STA_KEY_FLG_WEP_13BYTES); 2992e705c121SKalle Valo /* fall through */ 2993e705c121SKalle Valo case WLAN_CIPHER_SUITE_WEP40: 2994e705c121SKalle Valo key_flags |= cpu_to_le16(STA_KEY_FLG_WEP); 299545c458b4SSara Sharon memcpy(u.cmd.common.key + 3, key->key, key->keylen); 2996e705c121SKalle Valo break; 29972a53d166SAyala Beker case WLAN_CIPHER_SUITE_GCMP_256: 29982a53d166SAyala Beker key_flags |= cpu_to_le16(STA_KEY_FLG_KEY_32BYTES); 29992a53d166SAyala Beker /* fall through */ 30002a53d166SAyala Beker case WLAN_CIPHER_SUITE_GCMP: 30012a53d166SAyala Beker key_flags |= cpu_to_le16(STA_KEY_FLG_GCMP); 300245c458b4SSara Sharon memcpy(u.cmd.common.key, key->key, key->keylen); 300345c458b4SSara Sharon if (new_api) 300445c458b4SSara Sharon pn = atomic64_read(&key->tx_pn); 30052a53d166SAyala Beker break; 3006e705c121SKalle Valo default: 3007e705c121SKalle Valo key_flags |= cpu_to_le16(STA_KEY_FLG_EXT); 300845c458b4SSara Sharon memcpy(u.cmd.common.key, key->key, key->keylen); 3009e705c121SKalle Valo } 3010e705c121SKalle Valo 3011e705c121SKalle Valo if (mcast) 3012e705c121SKalle Valo key_flags |= cpu_to_le16(STA_KEY_MULTICAST); 3013e705c121SKalle Valo 301445c458b4SSara Sharon u.cmd.common.key_offset = key_offset; 301545c458b4SSara Sharon u.cmd.common.key_flags = key_flags; 301645c458b4SSara Sharon u.cmd.common.sta_id = mvm_sta->sta_id; 301745c458b4SSara Sharon 301845c458b4SSara Sharon if (new_api) { 301945c458b4SSara Sharon u.cmd.transmit_seq_cnt = cpu_to_le64(pn); 302045c458b4SSara Sharon size = sizeof(u.cmd); 302145c458b4SSara Sharon } else { 302245c458b4SSara Sharon size = sizeof(u.cmd_v1); 302345c458b4SSara Sharon } 3024e705c121SKalle Valo 3025e705c121SKalle Valo status = ADD_STA_SUCCESS; 3026e705c121SKalle Valo if (cmd_flags & CMD_ASYNC) 302745c458b4SSara Sharon ret = iwl_mvm_send_cmd_pdu(mvm, ADD_STA_KEY, CMD_ASYNC, size, 302845c458b4SSara Sharon &u.cmd); 3029e705c121SKalle Valo else 303045c458b4SSara Sharon ret = iwl_mvm_send_cmd_pdu_status(mvm, ADD_STA_KEY, size, 303145c458b4SSara Sharon &u.cmd, &status); 3032e705c121SKalle Valo 3033e705c121SKalle Valo switch (status) { 3034e705c121SKalle Valo case ADD_STA_SUCCESS: 3035e705c121SKalle Valo IWL_DEBUG_WEP(mvm, "MODIFY_STA: set dynamic key passed\n"); 3036e705c121SKalle Valo break; 3037e705c121SKalle Valo default: 3038e705c121SKalle Valo ret = -EIO; 3039e705c121SKalle Valo IWL_ERR(mvm, "MODIFY_STA: set dynamic key failed\n"); 3040e705c121SKalle Valo break; 3041e705c121SKalle Valo } 3042e705c121SKalle Valo 3043e705c121SKalle Valo return ret; 3044e705c121SKalle Valo } 3045e705c121SKalle Valo 3046e705c121SKalle Valo static int iwl_mvm_send_sta_igtk(struct iwl_mvm *mvm, 3047e705c121SKalle Valo struct ieee80211_key_conf *keyconf, 3048e705c121SKalle Valo u8 sta_id, bool remove_key) 3049e705c121SKalle Valo { 3050e705c121SKalle Valo struct iwl_mvm_mgmt_mcast_key_cmd igtk_cmd = {}; 3051e705c121SKalle Valo 3052e705c121SKalle Valo /* verify the key details match the required command's expectations */ 30538e160ab8SAyala Beker if (WARN_ON((keyconf->flags & IEEE80211_KEY_FLAG_PAIRWISE) || 30548e160ab8SAyala Beker (keyconf->keyidx != 4 && keyconf->keyidx != 5) || 30558e160ab8SAyala Beker (keyconf->cipher != WLAN_CIPHER_SUITE_AES_CMAC && 30568e160ab8SAyala Beker keyconf->cipher != WLAN_CIPHER_SUITE_BIP_GMAC_128 && 30578e160ab8SAyala Beker keyconf->cipher != WLAN_CIPHER_SUITE_BIP_GMAC_256))) 30588e160ab8SAyala Beker return -EINVAL; 30598e160ab8SAyala Beker 30608e160ab8SAyala Beker if (WARN_ON(!iwl_mvm_has_new_rx_api(mvm) && 30618e160ab8SAyala Beker keyconf->cipher != WLAN_CIPHER_SUITE_AES_CMAC)) 3062e705c121SKalle Valo return -EINVAL; 3063e705c121SKalle Valo 3064e705c121SKalle Valo igtk_cmd.key_id = cpu_to_le32(keyconf->keyidx); 3065e705c121SKalle Valo igtk_cmd.sta_id = cpu_to_le32(sta_id); 3066e705c121SKalle Valo 3067e705c121SKalle Valo if (remove_key) { 3068e705c121SKalle Valo igtk_cmd.ctrl_flags |= cpu_to_le32(STA_KEY_NOT_VALID); 3069e705c121SKalle Valo } else { 3070e705c121SKalle Valo struct ieee80211_key_seq seq; 3071e705c121SKalle Valo const u8 *pn; 3072e705c121SKalle Valo 3073aa950524SAyala Beker switch (keyconf->cipher) { 3074aa950524SAyala Beker case WLAN_CIPHER_SUITE_AES_CMAC: 3075aa950524SAyala Beker igtk_cmd.ctrl_flags |= cpu_to_le32(STA_KEY_FLG_CCM); 3076aa950524SAyala Beker break; 30778e160ab8SAyala Beker case WLAN_CIPHER_SUITE_BIP_GMAC_128: 30788e160ab8SAyala Beker case WLAN_CIPHER_SUITE_BIP_GMAC_256: 30798e160ab8SAyala Beker igtk_cmd.ctrl_flags |= cpu_to_le32(STA_KEY_FLG_GCMP); 30808e160ab8SAyala Beker break; 3081aa950524SAyala Beker default: 3082aa950524SAyala Beker return -EINVAL; 3083aa950524SAyala Beker } 3084aa950524SAyala Beker 30858e160ab8SAyala Beker memcpy(igtk_cmd.igtk, keyconf->key, keyconf->keylen); 30868e160ab8SAyala Beker if (keyconf->cipher == WLAN_CIPHER_SUITE_BIP_GMAC_256) 30878e160ab8SAyala Beker igtk_cmd.ctrl_flags |= 30888e160ab8SAyala Beker cpu_to_le32(STA_KEY_FLG_KEY_32BYTES); 3089e705c121SKalle Valo ieee80211_get_key_rx_seq(keyconf, 0, &seq); 3090e705c121SKalle Valo pn = seq.aes_cmac.pn; 3091e705c121SKalle Valo igtk_cmd.receive_seq_cnt = cpu_to_le64(((u64) pn[5] << 0) | 3092e705c121SKalle Valo ((u64) pn[4] << 8) | 3093e705c121SKalle Valo ((u64) pn[3] << 16) | 3094e705c121SKalle Valo ((u64) pn[2] << 24) | 3095e705c121SKalle Valo ((u64) pn[1] << 32) | 3096e705c121SKalle Valo ((u64) pn[0] << 40)); 3097e705c121SKalle Valo } 3098e705c121SKalle Valo 3099e705c121SKalle Valo IWL_DEBUG_INFO(mvm, "%s igtk for sta %u\n", 3100e705c121SKalle Valo remove_key ? "removing" : "installing", 3101e705c121SKalle Valo igtk_cmd.sta_id); 3102e705c121SKalle Valo 31038e160ab8SAyala Beker if (!iwl_mvm_has_new_rx_api(mvm)) { 31048e160ab8SAyala Beker struct iwl_mvm_mgmt_mcast_key_cmd_v1 igtk_cmd_v1 = { 31058e160ab8SAyala Beker .ctrl_flags = igtk_cmd.ctrl_flags, 31068e160ab8SAyala Beker .key_id = igtk_cmd.key_id, 31078e160ab8SAyala Beker .sta_id = igtk_cmd.sta_id, 31088e160ab8SAyala Beker .receive_seq_cnt = igtk_cmd.receive_seq_cnt 31098e160ab8SAyala Beker }; 31108e160ab8SAyala Beker 31118e160ab8SAyala Beker memcpy(igtk_cmd_v1.igtk, igtk_cmd.igtk, 31128e160ab8SAyala Beker ARRAY_SIZE(igtk_cmd_v1.igtk)); 31138e160ab8SAyala Beker return iwl_mvm_send_cmd_pdu(mvm, MGMT_MCAST_KEY, 0, 31148e160ab8SAyala Beker sizeof(igtk_cmd_v1), &igtk_cmd_v1); 31158e160ab8SAyala Beker } 3116e705c121SKalle Valo return iwl_mvm_send_cmd_pdu(mvm, MGMT_MCAST_KEY, 0, 3117e705c121SKalle Valo sizeof(igtk_cmd), &igtk_cmd); 3118e705c121SKalle Valo } 3119e705c121SKalle Valo 3120e705c121SKalle Valo 3121e705c121SKalle Valo static inline u8 *iwl_mvm_get_mac_addr(struct iwl_mvm *mvm, 3122e705c121SKalle Valo struct ieee80211_vif *vif, 3123e705c121SKalle Valo struct ieee80211_sta *sta) 3124e705c121SKalle Valo { 3125e705c121SKalle Valo struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 3126e705c121SKalle Valo 3127e705c121SKalle Valo if (sta) 3128e705c121SKalle Valo return sta->addr; 3129e705c121SKalle Valo 3130e705c121SKalle Valo if (vif->type == NL80211_IFTYPE_STATION && 31310ae98812SSara Sharon mvmvif->ap_sta_id != IWL_MVM_INVALID_STA) { 3132e705c121SKalle Valo u8 sta_id = mvmvif->ap_sta_id; 3133e705c121SKalle Valo sta = rcu_dereference_protected(mvm->fw_id_to_mac_id[sta_id], 3134e705c121SKalle Valo lockdep_is_held(&mvm->mutex)); 3135e705c121SKalle Valo return sta->addr; 3136e705c121SKalle Valo } 3137e705c121SKalle Valo 3138e705c121SKalle Valo 3139e705c121SKalle Valo return NULL; 3140e705c121SKalle Valo } 3141e705c121SKalle Valo 3142e705c121SKalle Valo static int __iwl_mvm_set_sta_key(struct iwl_mvm *mvm, 3143e705c121SKalle Valo struct ieee80211_vif *vif, 3144e705c121SKalle Valo struct ieee80211_sta *sta, 3145e705c121SKalle Valo struct ieee80211_key_conf *keyconf, 31464615fd15SEmmanuel Grumbach u8 key_offset, 3147e705c121SKalle Valo bool mcast) 3148e705c121SKalle Valo { 3149e705c121SKalle Valo struct iwl_mvm_sta *mvm_sta = iwl_mvm_sta_from_mac80211(sta); 3150e705c121SKalle Valo int ret; 3151e705c121SKalle Valo const u8 *addr; 3152e705c121SKalle Valo struct ieee80211_key_seq seq; 3153e705c121SKalle Valo u16 p1k[5]; 3154e705c121SKalle Valo 3155e705c121SKalle Valo switch (keyconf->cipher) { 3156e705c121SKalle Valo case WLAN_CIPHER_SUITE_TKIP: 3157e705c121SKalle Valo addr = iwl_mvm_get_mac_addr(mvm, vif, sta); 3158e705c121SKalle Valo /* get phase 1 key from mac80211 */ 3159e705c121SKalle Valo ieee80211_get_key_rx_seq(keyconf, 0, &seq); 3160e705c121SKalle Valo ieee80211_get_tkip_rx_p1k(keyconf, addr, seq.tkip.iv32, p1k); 3161e705c121SKalle Valo ret = iwl_mvm_send_sta_key(mvm, mvm_sta, keyconf, mcast, 31624615fd15SEmmanuel Grumbach seq.tkip.iv32, p1k, 0, key_offset); 3163e705c121SKalle Valo break; 3164e705c121SKalle Valo case WLAN_CIPHER_SUITE_CCMP: 3165e705c121SKalle Valo case WLAN_CIPHER_SUITE_WEP40: 3166e705c121SKalle Valo case WLAN_CIPHER_SUITE_WEP104: 31672a53d166SAyala Beker case WLAN_CIPHER_SUITE_GCMP: 31682a53d166SAyala Beker case WLAN_CIPHER_SUITE_GCMP_256: 3169e705c121SKalle Valo ret = iwl_mvm_send_sta_key(mvm, mvm_sta, keyconf, mcast, 31704615fd15SEmmanuel Grumbach 0, NULL, 0, key_offset); 3171e705c121SKalle Valo break; 3172e705c121SKalle Valo default: 3173e705c121SKalle Valo ret = iwl_mvm_send_sta_key(mvm, mvm_sta, keyconf, mcast, 31744615fd15SEmmanuel Grumbach 0, NULL, 0, key_offset); 3175e705c121SKalle Valo } 3176e705c121SKalle Valo 3177e705c121SKalle Valo return ret; 3178e705c121SKalle Valo } 3179e705c121SKalle Valo 3180e705c121SKalle Valo static int __iwl_mvm_remove_sta_key(struct iwl_mvm *mvm, u8 sta_id, 3181e705c121SKalle Valo struct ieee80211_key_conf *keyconf, 3182e705c121SKalle Valo bool mcast) 3183e705c121SKalle Valo { 318445c458b4SSara Sharon union { 318545c458b4SSara Sharon struct iwl_mvm_add_sta_key_cmd_v1 cmd_v1; 318645c458b4SSara Sharon struct iwl_mvm_add_sta_key_cmd cmd; 318745c458b4SSara Sharon } u = {}; 318845c458b4SSara Sharon bool new_api = fw_has_api(&mvm->fw->ucode_capa, 318945c458b4SSara Sharon IWL_UCODE_TLV_API_TKIP_MIC_KEYS); 3190e705c121SKalle Valo __le16 key_flags; 319145c458b4SSara Sharon int ret, size; 3192e705c121SKalle Valo u32 status; 3193e705c121SKalle Valo 3194e705c121SKalle Valo key_flags = cpu_to_le16((keyconf->keyidx << STA_KEY_FLG_KEYID_POS) & 3195e705c121SKalle Valo STA_KEY_FLG_KEYID_MSK); 3196e705c121SKalle Valo key_flags |= cpu_to_le16(STA_KEY_FLG_NO_ENC | STA_KEY_FLG_WEP_KEY_MAP); 3197e705c121SKalle Valo key_flags |= cpu_to_le16(STA_KEY_NOT_VALID); 3198e705c121SKalle Valo 3199e705c121SKalle Valo if (mcast) 3200e705c121SKalle Valo key_flags |= cpu_to_le16(STA_KEY_MULTICAST); 3201e705c121SKalle Valo 320245c458b4SSara Sharon /* 320345c458b4SSara Sharon * The fields assigned here are in the same location at the start 320445c458b4SSara Sharon * of the command, so we can do this union trick. 320545c458b4SSara Sharon */ 320645c458b4SSara Sharon u.cmd.common.key_flags = key_flags; 320745c458b4SSara Sharon u.cmd.common.key_offset = keyconf->hw_key_idx; 320845c458b4SSara Sharon u.cmd.common.sta_id = sta_id; 320945c458b4SSara Sharon 321045c458b4SSara Sharon size = new_api ? sizeof(u.cmd) : sizeof(u.cmd_v1); 3211e705c121SKalle Valo 3212e705c121SKalle Valo status = ADD_STA_SUCCESS; 321345c458b4SSara Sharon ret = iwl_mvm_send_cmd_pdu_status(mvm, ADD_STA_KEY, size, &u.cmd, 321445c458b4SSara Sharon &status); 3215e705c121SKalle Valo 3216e705c121SKalle Valo switch (status) { 3217e705c121SKalle Valo case ADD_STA_SUCCESS: 3218e705c121SKalle Valo IWL_DEBUG_WEP(mvm, "MODIFY_STA: remove sta key passed\n"); 3219e705c121SKalle Valo break; 3220e705c121SKalle Valo default: 3221e705c121SKalle Valo ret = -EIO; 3222e705c121SKalle Valo IWL_ERR(mvm, "MODIFY_STA: remove sta key failed\n"); 3223e705c121SKalle Valo break; 3224e705c121SKalle Valo } 3225e705c121SKalle Valo 3226e705c121SKalle Valo return ret; 3227e705c121SKalle Valo } 3228e705c121SKalle Valo 3229e705c121SKalle Valo int iwl_mvm_set_sta_key(struct iwl_mvm *mvm, 3230e705c121SKalle Valo struct ieee80211_vif *vif, 3231e705c121SKalle Valo struct ieee80211_sta *sta, 3232e705c121SKalle Valo struct ieee80211_key_conf *keyconf, 32334615fd15SEmmanuel Grumbach u8 key_offset) 3234e705c121SKalle Valo { 3235e705c121SKalle Valo bool mcast = !(keyconf->flags & IEEE80211_KEY_FLAG_PAIRWISE); 32365f7a1847SJohannes Berg struct iwl_mvm_sta *mvm_sta; 3237e705c121SKalle Valo u8 sta_id; 3238e705c121SKalle Valo int ret; 3239e705c121SKalle Valo static const u8 __maybe_unused zero_addr[ETH_ALEN] = {0}; 3240e705c121SKalle Valo 3241e705c121SKalle Valo lockdep_assert_held(&mvm->mutex); 3242e705c121SKalle Valo 3243e705c121SKalle Valo /* Get the station id from the mvm local station table */ 32445f7a1847SJohannes Berg mvm_sta = iwl_mvm_get_key_sta(mvm, vif, sta); 32455f7a1847SJohannes Berg if (!mvm_sta) { 32465f7a1847SJohannes Berg IWL_ERR(mvm, "Failed to find station\n"); 3247e705c121SKalle Valo return -EINVAL; 3248e705c121SKalle Valo } 32495f7a1847SJohannes Berg sta_id = mvm_sta->sta_id; 3250e705c121SKalle Valo 32518e160ab8SAyala Beker if (keyconf->cipher == WLAN_CIPHER_SUITE_AES_CMAC || 32528e160ab8SAyala Beker keyconf->cipher == WLAN_CIPHER_SUITE_BIP_GMAC_128 || 32538e160ab8SAyala Beker keyconf->cipher == WLAN_CIPHER_SUITE_BIP_GMAC_256) { 3254e705c121SKalle Valo ret = iwl_mvm_send_sta_igtk(mvm, keyconf, sta_id, false); 3255e705c121SKalle Valo goto end; 3256e705c121SKalle Valo } 3257e705c121SKalle Valo 3258e705c121SKalle Valo /* 3259e705c121SKalle Valo * It is possible that the 'sta' parameter is NULL, and thus 3260e705c121SKalle Valo * there is a need to retrieve the sta from the local station table. 3261e705c121SKalle Valo */ 3262e705c121SKalle Valo if (!sta) { 3263e705c121SKalle Valo sta = rcu_dereference_protected(mvm->fw_id_to_mac_id[sta_id], 3264e705c121SKalle Valo lockdep_is_held(&mvm->mutex)); 3265e705c121SKalle Valo if (IS_ERR_OR_NULL(sta)) { 3266e705c121SKalle Valo IWL_ERR(mvm, "Invalid station id\n"); 3267e705c121SKalle Valo return -EINVAL; 3268e705c121SKalle Valo } 3269e705c121SKalle Valo } 3270e705c121SKalle Valo 3271e705c121SKalle Valo if (WARN_ON_ONCE(iwl_mvm_sta_from_mac80211(sta)->vif != vif)) 3272e705c121SKalle Valo return -EINVAL; 3273e705c121SKalle Valo 32744615fd15SEmmanuel Grumbach /* If the key_offset is not pre-assigned, we need to find a 32754615fd15SEmmanuel Grumbach * new offset to use. In normal cases, the offset is not 32764615fd15SEmmanuel Grumbach * pre-assigned, but during HW_RESTART we want to reuse the 32774615fd15SEmmanuel Grumbach * same indices, so we pass them when this function is called. 32784615fd15SEmmanuel Grumbach * 32794615fd15SEmmanuel Grumbach * In D3 entry, we need to hardcoded the indices (because the 32804615fd15SEmmanuel Grumbach * firmware hardcodes the PTK offset to 0). In this case, we 32814615fd15SEmmanuel Grumbach * need to make sure we don't overwrite the hw_key_idx in the 32824615fd15SEmmanuel Grumbach * keyconf structure, because otherwise we cannot configure 32834615fd15SEmmanuel Grumbach * the original ones back when resuming. 3284e705c121SKalle Valo */ 32854615fd15SEmmanuel Grumbach if (key_offset == STA_KEY_IDX_INVALID) { 32864615fd15SEmmanuel Grumbach key_offset = iwl_mvm_set_fw_key_idx(mvm); 32874615fd15SEmmanuel Grumbach if (key_offset == STA_KEY_IDX_INVALID) 3288e705c121SKalle Valo return -ENOSPC; 32894615fd15SEmmanuel Grumbach keyconf->hw_key_idx = key_offset; 3290e705c121SKalle Valo } 3291e705c121SKalle Valo 32924615fd15SEmmanuel Grumbach ret = __iwl_mvm_set_sta_key(mvm, vif, sta, keyconf, key_offset, mcast); 32939c3deeb5SLuca Coelho if (ret) 3294e705c121SKalle Valo goto end; 3295e705c121SKalle Valo 3296e705c121SKalle Valo /* 3297e705c121SKalle Valo * For WEP, the same key is used for multicast and unicast. Upload it 3298e705c121SKalle Valo * again, using the same key offset, and now pointing the other one 3299e705c121SKalle Valo * to the same key slot (offset). 3300e705c121SKalle Valo * If this fails, remove the original as well. 3301e705c121SKalle Valo */ 3302e705c121SKalle Valo if (keyconf->cipher == WLAN_CIPHER_SUITE_WEP40 || 3303e705c121SKalle Valo keyconf->cipher == WLAN_CIPHER_SUITE_WEP104) { 33044615fd15SEmmanuel Grumbach ret = __iwl_mvm_set_sta_key(mvm, vif, sta, keyconf, 33054615fd15SEmmanuel Grumbach key_offset, !mcast); 3306e705c121SKalle Valo if (ret) { 3307e705c121SKalle Valo __iwl_mvm_remove_sta_key(mvm, sta_id, keyconf, mcast); 33089c3deeb5SLuca Coelho goto end; 3309e705c121SKalle Valo } 3310e705c121SKalle Valo } 3311e705c121SKalle Valo 33129c3deeb5SLuca Coelho __set_bit(key_offset, mvm->fw_key_table); 33139c3deeb5SLuca Coelho 3314e705c121SKalle Valo end: 3315e705c121SKalle Valo IWL_DEBUG_WEP(mvm, "key: cipher=%x len=%d idx=%d sta=%pM ret=%d\n", 3316e705c121SKalle Valo keyconf->cipher, keyconf->keylen, keyconf->keyidx, 3317e705c121SKalle Valo sta ? sta->addr : zero_addr, ret); 3318e705c121SKalle Valo return ret; 3319e705c121SKalle Valo } 3320e705c121SKalle Valo 3321e705c121SKalle Valo int iwl_mvm_remove_sta_key(struct iwl_mvm *mvm, 3322e705c121SKalle Valo struct ieee80211_vif *vif, 3323e705c121SKalle Valo struct ieee80211_sta *sta, 3324e705c121SKalle Valo struct ieee80211_key_conf *keyconf) 3325e705c121SKalle Valo { 3326e705c121SKalle Valo bool mcast = !(keyconf->flags & IEEE80211_KEY_FLAG_PAIRWISE); 33275f7a1847SJohannes Berg struct iwl_mvm_sta *mvm_sta; 33280ae98812SSara Sharon u8 sta_id = IWL_MVM_INVALID_STA; 3329e705c121SKalle Valo int ret, i; 3330e705c121SKalle Valo 3331e705c121SKalle Valo lockdep_assert_held(&mvm->mutex); 3332e705c121SKalle Valo 33335f7a1847SJohannes Berg /* Get the station from the mvm local station table */ 33345f7a1847SJohannes Berg mvm_sta = iwl_mvm_get_key_sta(mvm, vif, sta); 3335cd4d23c1SIlan Peer if (!mvm_sta) { 3336cd4d23c1SIlan Peer IWL_ERR(mvm, "Failed to find station\n"); 3337cd4d23c1SIlan Peer return -EINVAL; 3338cd4d23c1SIlan Peer } 3339cd4d23c1SIlan Peer sta_id = mvm_sta->sta_id; 3340e705c121SKalle Valo 3341e705c121SKalle Valo IWL_DEBUG_WEP(mvm, "mvm remove dynamic key: idx=%d sta=%d\n", 3342e705c121SKalle Valo keyconf->keyidx, sta_id); 3343e705c121SKalle Valo 33448e160ab8SAyala Beker if (keyconf->cipher == WLAN_CIPHER_SUITE_AES_CMAC || 33458e160ab8SAyala Beker keyconf->cipher == WLAN_CIPHER_SUITE_BIP_GMAC_128 || 33468e160ab8SAyala Beker keyconf->cipher == WLAN_CIPHER_SUITE_BIP_GMAC_256) 3347e705c121SKalle Valo return iwl_mvm_send_sta_igtk(mvm, keyconf, sta_id, true); 3348e705c121SKalle Valo 3349e705c121SKalle Valo if (!__test_and_clear_bit(keyconf->hw_key_idx, mvm->fw_key_table)) { 3350e705c121SKalle Valo IWL_ERR(mvm, "offset %d not used in fw key table.\n", 3351e705c121SKalle Valo keyconf->hw_key_idx); 3352e705c121SKalle Valo return -ENOENT; 3353e705c121SKalle Valo } 3354e705c121SKalle Valo 3355e705c121SKalle Valo /* track which key was deleted last */ 3356e705c121SKalle Valo for (i = 0; i < STA_KEY_MAX_NUM; i++) { 3357e705c121SKalle Valo if (mvm->fw_key_deleted[i] < U8_MAX) 3358e705c121SKalle Valo mvm->fw_key_deleted[i]++; 3359e705c121SKalle Valo } 3360e705c121SKalle Valo mvm->fw_key_deleted[keyconf->hw_key_idx] = 0; 3361e705c121SKalle Valo 33625f7a1847SJohannes Berg if (!mvm_sta) { 3363e705c121SKalle Valo IWL_DEBUG_WEP(mvm, "station non-existent, early return.\n"); 3364e705c121SKalle Valo return 0; 3365e705c121SKalle Valo } 3366e705c121SKalle Valo 3367e705c121SKalle Valo ret = __iwl_mvm_remove_sta_key(mvm, sta_id, keyconf, mcast); 3368e705c121SKalle Valo if (ret) 3369e705c121SKalle Valo return ret; 3370e705c121SKalle Valo 3371e705c121SKalle Valo /* delete WEP key twice to get rid of (now useless) offset */ 3372e705c121SKalle Valo if (keyconf->cipher == WLAN_CIPHER_SUITE_WEP40 || 3373e705c121SKalle Valo keyconf->cipher == WLAN_CIPHER_SUITE_WEP104) 3374e705c121SKalle Valo ret = __iwl_mvm_remove_sta_key(mvm, sta_id, keyconf, !mcast); 3375e705c121SKalle Valo 3376e705c121SKalle Valo return ret; 3377e705c121SKalle Valo } 3378e705c121SKalle Valo 3379e705c121SKalle Valo void iwl_mvm_update_tkip_key(struct iwl_mvm *mvm, 3380e705c121SKalle Valo struct ieee80211_vif *vif, 3381e705c121SKalle Valo struct ieee80211_key_conf *keyconf, 3382e705c121SKalle Valo struct ieee80211_sta *sta, u32 iv32, 3383e705c121SKalle Valo u16 *phase1key) 3384e705c121SKalle Valo { 3385e705c121SKalle Valo struct iwl_mvm_sta *mvm_sta; 3386e705c121SKalle Valo bool mcast = !(keyconf->flags & IEEE80211_KEY_FLAG_PAIRWISE); 3387e705c121SKalle Valo 3388e705c121SKalle Valo rcu_read_lock(); 3389e705c121SKalle Valo 33905f7a1847SJohannes Berg mvm_sta = iwl_mvm_get_key_sta(mvm, vif, sta); 33915f7a1847SJohannes Berg if (WARN_ON_ONCE(!mvm_sta)) 339212f17211SEmmanuel Grumbach goto unlock; 3393e705c121SKalle Valo iwl_mvm_send_sta_key(mvm, mvm_sta, keyconf, mcast, 33944615fd15SEmmanuel Grumbach iv32, phase1key, CMD_ASYNC, keyconf->hw_key_idx); 339512f17211SEmmanuel Grumbach 339612f17211SEmmanuel Grumbach unlock: 3397e705c121SKalle Valo rcu_read_unlock(); 3398e705c121SKalle Valo } 3399e705c121SKalle Valo 3400e705c121SKalle Valo void iwl_mvm_sta_modify_ps_wake(struct iwl_mvm *mvm, 3401e705c121SKalle Valo struct ieee80211_sta *sta) 3402e705c121SKalle Valo { 3403e705c121SKalle Valo struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta); 3404e705c121SKalle Valo struct iwl_mvm_add_sta_cmd cmd = { 3405e705c121SKalle Valo .add_modify = STA_MODE_MODIFY, 3406e705c121SKalle Valo .sta_id = mvmsta->sta_id, 3407e705c121SKalle Valo .station_flags_msk = cpu_to_le32(STA_FLG_PS), 3408e705c121SKalle Valo .mac_id_n_color = cpu_to_le32(mvmsta->mac_id_n_color), 3409e705c121SKalle Valo }; 3410e705c121SKalle Valo int ret; 3411e705c121SKalle Valo 3412854c5705SSara Sharon ret = iwl_mvm_send_cmd_pdu(mvm, ADD_STA, CMD_ASYNC, 3413854c5705SSara Sharon iwl_mvm_add_sta_cmd_size(mvm), &cmd); 3414e705c121SKalle Valo if (ret) 3415e705c121SKalle Valo IWL_ERR(mvm, "Failed to send ADD_STA command (%d)\n", ret); 3416e705c121SKalle Valo } 3417e705c121SKalle Valo 3418e705c121SKalle Valo void iwl_mvm_sta_modify_sleep_tx_count(struct iwl_mvm *mvm, 3419e705c121SKalle Valo struct ieee80211_sta *sta, 3420e705c121SKalle Valo enum ieee80211_frame_release_type reason, 3421e705c121SKalle Valo u16 cnt, u16 tids, bool more_data, 34229a3fcf91SSara Sharon bool single_sta_queue) 3423e705c121SKalle Valo { 3424e705c121SKalle Valo struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta); 3425e705c121SKalle Valo struct iwl_mvm_add_sta_cmd cmd = { 3426e705c121SKalle Valo .add_modify = STA_MODE_MODIFY, 3427e705c121SKalle Valo .sta_id = mvmsta->sta_id, 3428e705c121SKalle Valo .modify_mask = STA_MODIFY_SLEEPING_STA_TX_COUNT, 3429e705c121SKalle Valo .sleep_tx_count = cpu_to_le16(cnt), 3430e705c121SKalle Valo .mac_id_n_color = cpu_to_le32(mvmsta->mac_id_n_color), 3431e705c121SKalle Valo }; 3432e705c121SKalle Valo int tid, ret; 3433e705c121SKalle Valo unsigned long _tids = tids; 3434e705c121SKalle Valo 3435e705c121SKalle Valo /* convert TIDs to ACs - we don't support TSPEC so that's OK 3436e705c121SKalle Valo * Note that this field is reserved and unused by firmware not 3437e705c121SKalle Valo * supporting GO uAPSD, so it's safe to always do this. 3438e705c121SKalle Valo */ 3439e705c121SKalle Valo for_each_set_bit(tid, &_tids, IWL_MAX_TID_COUNT) 3440e705c121SKalle Valo cmd.awake_acs |= BIT(tid_to_ucode_ac[tid]); 3441e705c121SKalle Valo 34429a3fcf91SSara Sharon /* If we're releasing frames from aggregation or dqa queues then check 34439a3fcf91SSara Sharon * if all the queues that we're releasing frames from, combined, have: 3444e705c121SKalle Valo * - more frames than the service period, in which case more_data 3445e705c121SKalle Valo * needs to be set 3446e705c121SKalle Valo * - fewer than 'cnt' frames, in which case we need to adjust the 3447e705c121SKalle Valo * firmware command (but do that unconditionally) 3448e705c121SKalle Valo */ 34499a3fcf91SSara Sharon if (single_sta_queue) { 3450e705c121SKalle Valo int remaining = cnt; 345136be0eb6SEmmanuel Grumbach int sleep_tx_count; 3452e705c121SKalle Valo 3453e705c121SKalle Valo spin_lock_bh(&mvmsta->lock); 3454e705c121SKalle Valo for_each_set_bit(tid, &_tids, IWL_MAX_TID_COUNT) { 3455e705c121SKalle Valo struct iwl_mvm_tid_data *tid_data; 3456e705c121SKalle Valo u16 n_queued; 3457e705c121SKalle Valo 3458e705c121SKalle Valo tid_data = &mvmsta->tid_data[tid]; 34599a3fcf91SSara Sharon if (WARN(!iwl_mvm_is_dqa_supported(mvm) && 34609a3fcf91SSara Sharon tid_data->state != IWL_AGG_ON && 3461e705c121SKalle Valo tid_data->state != IWL_EMPTYING_HW_QUEUE_DELBA, 3462e705c121SKalle Valo "TID %d state is %d\n", 3463e705c121SKalle Valo tid, tid_data->state)) { 3464e705c121SKalle Valo spin_unlock_bh(&mvmsta->lock); 3465e705c121SKalle Valo ieee80211_sta_eosp(sta); 3466e705c121SKalle Valo return; 3467e705c121SKalle Valo } 3468e705c121SKalle Valo 3469e705c121SKalle Valo n_queued = iwl_mvm_tid_queued(tid_data); 3470e705c121SKalle Valo if (n_queued > remaining) { 3471e705c121SKalle Valo more_data = true; 3472e705c121SKalle Valo remaining = 0; 3473e705c121SKalle Valo break; 3474e705c121SKalle Valo } 3475e705c121SKalle Valo remaining -= n_queued; 3476e705c121SKalle Valo } 347736be0eb6SEmmanuel Grumbach sleep_tx_count = cnt - remaining; 347836be0eb6SEmmanuel Grumbach if (reason == IEEE80211_FRAME_RELEASE_UAPSD) 347936be0eb6SEmmanuel Grumbach mvmsta->sleep_tx_count = sleep_tx_count; 3480e705c121SKalle Valo spin_unlock_bh(&mvmsta->lock); 3481e705c121SKalle Valo 348236be0eb6SEmmanuel Grumbach cmd.sleep_tx_count = cpu_to_le16(sleep_tx_count); 3483e705c121SKalle Valo if (WARN_ON(cnt - remaining == 0)) { 3484e705c121SKalle Valo ieee80211_sta_eosp(sta); 3485e705c121SKalle Valo return; 3486e705c121SKalle Valo } 3487e705c121SKalle Valo } 3488e705c121SKalle Valo 3489e705c121SKalle Valo /* Note: this is ignored by firmware not supporting GO uAPSD */ 3490e705c121SKalle Valo if (more_data) 3491ced19f26SSara Sharon cmd.sleep_state_flags |= STA_SLEEP_STATE_MOREDATA; 3492e705c121SKalle Valo 3493e705c121SKalle Valo if (reason == IEEE80211_FRAME_RELEASE_PSPOLL) { 3494e705c121SKalle Valo mvmsta->next_status_eosp = true; 3495ced19f26SSara Sharon cmd.sleep_state_flags |= STA_SLEEP_STATE_PS_POLL; 3496e705c121SKalle Valo } else { 3497ced19f26SSara Sharon cmd.sleep_state_flags |= STA_SLEEP_STATE_UAPSD; 3498e705c121SKalle Valo } 3499e705c121SKalle Valo 3500156f92f2SEmmanuel Grumbach /* block the Tx queues until the FW updated the sleep Tx count */ 3501156f92f2SEmmanuel Grumbach iwl_trans_block_txq_ptrs(mvm->trans, true); 3502156f92f2SEmmanuel Grumbach 3503156f92f2SEmmanuel Grumbach ret = iwl_mvm_send_cmd_pdu(mvm, ADD_STA, 3504156f92f2SEmmanuel Grumbach CMD_ASYNC | CMD_WANT_ASYNC_CALLBACK, 3505854c5705SSara Sharon iwl_mvm_add_sta_cmd_size(mvm), &cmd); 3506e705c121SKalle Valo if (ret) 3507e705c121SKalle Valo IWL_ERR(mvm, "Failed to send ADD_STA command (%d)\n", ret); 3508e705c121SKalle Valo } 3509e705c121SKalle Valo 3510e705c121SKalle Valo void iwl_mvm_rx_eosp_notif(struct iwl_mvm *mvm, 3511e705c121SKalle Valo struct iwl_rx_cmd_buffer *rxb) 3512e705c121SKalle Valo { 3513e705c121SKalle Valo struct iwl_rx_packet *pkt = rxb_addr(rxb); 3514e705c121SKalle Valo struct iwl_mvm_eosp_notification *notif = (void *)pkt->data; 3515e705c121SKalle Valo struct ieee80211_sta *sta; 3516e705c121SKalle Valo u32 sta_id = le32_to_cpu(notif->sta_id); 3517e705c121SKalle Valo 3518e705c121SKalle Valo if (WARN_ON_ONCE(sta_id >= IWL_MVM_STATION_COUNT)) 3519e705c121SKalle Valo return; 3520e705c121SKalle Valo 3521e705c121SKalle Valo rcu_read_lock(); 3522e705c121SKalle Valo sta = rcu_dereference(mvm->fw_id_to_mac_id[sta_id]); 3523e705c121SKalle Valo if (!IS_ERR_OR_NULL(sta)) 3524e705c121SKalle Valo ieee80211_sta_eosp(sta); 3525e705c121SKalle Valo rcu_read_unlock(); 3526e705c121SKalle Valo } 3527e705c121SKalle Valo 3528e705c121SKalle Valo void iwl_mvm_sta_modify_disable_tx(struct iwl_mvm *mvm, 3529e705c121SKalle Valo struct iwl_mvm_sta *mvmsta, bool disable) 3530e705c121SKalle Valo { 3531e705c121SKalle Valo struct iwl_mvm_add_sta_cmd cmd = { 3532e705c121SKalle Valo .add_modify = STA_MODE_MODIFY, 3533e705c121SKalle Valo .sta_id = mvmsta->sta_id, 3534e705c121SKalle Valo .station_flags = disable ? cpu_to_le32(STA_FLG_DISABLE_TX) : 0, 3535e705c121SKalle Valo .station_flags_msk = cpu_to_le32(STA_FLG_DISABLE_TX), 3536e705c121SKalle Valo .mac_id_n_color = cpu_to_le32(mvmsta->mac_id_n_color), 3537e705c121SKalle Valo }; 3538e705c121SKalle Valo int ret; 3539e705c121SKalle Valo 3540854c5705SSara Sharon ret = iwl_mvm_send_cmd_pdu(mvm, ADD_STA, CMD_ASYNC, 3541854c5705SSara Sharon iwl_mvm_add_sta_cmd_size(mvm), &cmd); 3542e705c121SKalle Valo if (ret) 3543e705c121SKalle Valo IWL_ERR(mvm, "Failed to send ADD_STA command (%d)\n", ret); 3544e705c121SKalle Valo } 3545e705c121SKalle Valo 3546e705c121SKalle Valo void iwl_mvm_sta_modify_disable_tx_ap(struct iwl_mvm *mvm, 3547e705c121SKalle Valo struct ieee80211_sta *sta, 3548e705c121SKalle Valo bool disable) 3549e705c121SKalle Valo { 3550e705c121SKalle Valo struct iwl_mvm_sta *mvm_sta = iwl_mvm_sta_from_mac80211(sta); 3551e705c121SKalle Valo 3552e705c121SKalle Valo spin_lock_bh(&mvm_sta->lock); 3553e705c121SKalle Valo 3554e705c121SKalle Valo if (mvm_sta->disable_tx == disable) { 3555e705c121SKalle Valo spin_unlock_bh(&mvm_sta->lock); 3556e705c121SKalle Valo return; 3557e705c121SKalle Valo } 3558e705c121SKalle Valo 3559e705c121SKalle Valo mvm_sta->disable_tx = disable; 3560e705c121SKalle Valo 3561e705c121SKalle Valo /* 3562e705c121SKalle Valo * Tell mac80211 to start/stop queuing tx for this station, 3563e705c121SKalle Valo * but don't stop queuing if there are still pending frames 3564e705c121SKalle Valo * for this station. 3565e705c121SKalle Valo */ 3566e705c121SKalle Valo if (disable || !atomic_read(&mvm->pending_frames[mvm_sta->sta_id])) 3567e705c121SKalle Valo ieee80211_sta_block_awake(mvm->hw, sta, disable); 3568e705c121SKalle Valo 3569e705c121SKalle Valo iwl_mvm_sta_modify_disable_tx(mvm, mvm_sta, disable); 3570e705c121SKalle Valo 3571e705c121SKalle Valo spin_unlock_bh(&mvm_sta->lock); 3572e705c121SKalle Valo } 3573e705c121SKalle Valo 3574ced19f26SSara Sharon static void iwl_mvm_int_sta_modify_disable_tx(struct iwl_mvm *mvm, 3575ced19f26SSara Sharon struct iwl_mvm_vif *mvmvif, 3576ced19f26SSara Sharon struct iwl_mvm_int_sta *sta, 3577ced19f26SSara Sharon bool disable) 3578ced19f26SSara Sharon { 3579ced19f26SSara Sharon u32 id = FW_CMD_ID_AND_COLOR(mvmvif->id, mvmvif->color); 3580ced19f26SSara Sharon struct iwl_mvm_add_sta_cmd cmd = { 3581ced19f26SSara Sharon .add_modify = STA_MODE_MODIFY, 3582ced19f26SSara Sharon .sta_id = sta->sta_id, 3583ced19f26SSara Sharon .station_flags = disable ? cpu_to_le32(STA_FLG_DISABLE_TX) : 0, 3584ced19f26SSara Sharon .station_flags_msk = cpu_to_le32(STA_FLG_DISABLE_TX), 3585ced19f26SSara Sharon .mac_id_n_color = cpu_to_le32(id), 3586ced19f26SSara Sharon }; 3587ced19f26SSara Sharon int ret; 3588ced19f26SSara Sharon 3589ced19f26SSara Sharon ret = iwl_mvm_send_cmd_pdu(mvm, ADD_STA, 0, 3590ced19f26SSara Sharon iwl_mvm_add_sta_cmd_size(mvm), &cmd); 3591ced19f26SSara Sharon if (ret) 3592ced19f26SSara Sharon IWL_ERR(mvm, "Failed to send ADD_STA command (%d)\n", ret); 3593ced19f26SSara Sharon } 3594ced19f26SSara Sharon 3595e705c121SKalle Valo void iwl_mvm_modify_all_sta_disable_tx(struct iwl_mvm *mvm, 3596e705c121SKalle Valo struct iwl_mvm_vif *mvmvif, 3597e705c121SKalle Valo bool disable) 3598e705c121SKalle Valo { 3599e705c121SKalle Valo struct ieee80211_sta *sta; 3600e705c121SKalle Valo struct iwl_mvm_sta *mvm_sta; 3601e705c121SKalle Valo int i; 3602e705c121SKalle Valo 3603e705c121SKalle Valo lockdep_assert_held(&mvm->mutex); 3604e705c121SKalle Valo 3605e705c121SKalle Valo /* Block/unblock all the stations of the given mvmvif */ 36060ae98812SSara Sharon for (i = 0; i < ARRAY_SIZE(mvm->fw_id_to_mac_id); i++) { 3607e705c121SKalle Valo sta = rcu_dereference_protected(mvm->fw_id_to_mac_id[i], 3608e705c121SKalle Valo lockdep_is_held(&mvm->mutex)); 3609e705c121SKalle Valo if (IS_ERR_OR_NULL(sta)) 3610e705c121SKalle Valo continue; 3611e705c121SKalle Valo 3612e705c121SKalle Valo mvm_sta = iwl_mvm_sta_from_mac80211(sta); 3613e705c121SKalle Valo if (mvm_sta->mac_id_n_color != 3614e705c121SKalle Valo FW_CMD_ID_AND_COLOR(mvmvif->id, mvmvif->color)) 3615e705c121SKalle Valo continue; 3616e705c121SKalle Valo 3617e705c121SKalle Valo iwl_mvm_sta_modify_disable_tx_ap(mvm, sta, disable); 3618e705c121SKalle Valo } 3619ced19f26SSara Sharon 3620ced19f26SSara Sharon if (!fw_has_api(&mvm->fw->ucode_capa, IWL_UCODE_TLV_API_STA_TYPE)) 3621ced19f26SSara Sharon return; 3622ced19f26SSara Sharon 3623ced19f26SSara Sharon /* Need to block/unblock also multicast station */ 3624ced19f26SSara Sharon if (mvmvif->mcast_sta.sta_id != IWL_MVM_INVALID_STA) 3625ced19f26SSara Sharon iwl_mvm_int_sta_modify_disable_tx(mvm, mvmvif, 3626ced19f26SSara Sharon &mvmvif->mcast_sta, disable); 3627ced19f26SSara Sharon 3628ced19f26SSara Sharon /* 3629ced19f26SSara Sharon * Only unblock the broadcast station (FW blocks it for immediate 3630ced19f26SSara Sharon * quiet, not the driver) 3631ced19f26SSara Sharon */ 3632ced19f26SSara Sharon if (!disable && mvmvif->bcast_sta.sta_id != IWL_MVM_INVALID_STA) 3633ced19f26SSara Sharon iwl_mvm_int_sta_modify_disable_tx(mvm, mvmvif, 3634ced19f26SSara Sharon &mvmvif->bcast_sta, disable); 3635e705c121SKalle Valo } 3636e705c121SKalle Valo 3637e705c121SKalle Valo void iwl_mvm_csa_client_absent(struct iwl_mvm *mvm, struct ieee80211_vif *vif) 3638e705c121SKalle Valo { 3639e705c121SKalle Valo struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 3640e705c121SKalle Valo struct iwl_mvm_sta *mvmsta; 3641e705c121SKalle Valo 3642e705c121SKalle Valo rcu_read_lock(); 3643e705c121SKalle Valo 3644e705c121SKalle Valo mvmsta = iwl_mvm_sta_from_staid_rcu(mvm, mvmvif->ap_sta_id); 3645e705c121SKalle Valo 3646e705c121SKalle Valo if (!WARN_ON(!mvmsta)) 3647e705c121SKalle Valo iwl_mvm_sta_modify_disable_tx(mvm, mvmsta, true); 3648e705c121SKalle Valo 3649e705c121SKalle Valo rcu_read_unlock(); 3650e705c121SKalle Valo } 3651