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 | 1248addabf8SNaftali Goldstein STA_FLG_MIMO_EN_MSK | 1258addabf8SNaftali Goldstein STA_FLG_RTS_MIMO_PROT), 126cf0cda19SLiad Kaufman .tid_disable_tx = cpu_to_le16(mvm_sta->tid_disable_agg), 127e705c121SKalle Valo }; 128e705c121SKalle Valo int ret; 129e705c121SKalle Valo u32 status; 130e705c121SKalle Valo u32 agg_size = 0, mpdu_dens = 0; 131e705c121SKalle Valo 132ced19f26SSara Sharon if (fw_has_api(&mvm->fw->ucode_capa, IWL_UCODE_TLV_API_STA_TYPE)) 133ced19f26SSara Sharon add_sta_cmd.station_type = mvm_sta->sta_type; 134ced19f26SSara Sharon 13524afba76SLiad Kaufman if (!update || (flags & STA_MODIFY_QUEUES)) { 136e705c121SKalle Valo memcpy(&add_sta_cmd.addr, sta->addr, ETH_ALEN); 13724afba76SLiad Kaufman 138bb49701bSSara Sharon if (!iwl_mvm_has_new_tx_api(mvm)) { 139bb49701bSSara Sharon add_sta_cmd.tfd_queue_msk = 140bb49701bSSara Sharon cpu_to_le32(mvm_sta->tfd_queue_msk); 141bb49701bSSara Sharon 14224afba76SLiad Kaufman if (flags & STA_MODIFY_QUEUES) 14324afba76SLiad Kaufman add_sta_cmd.modify_mask |= STA_MODIFY_QUEUES; 144bb49701bSSara Sharon } else { 145bb49701bSSara Sharon WARN_ON(flags & STA_MODIFY_QUEUES); 146bb49701bSSara Sharon } 147e705c121SKalle Valo } 148e705c121SKalle Valo 149e705c121SKalle Valo switch (sta->bandwidth) { 150e705c121SKalle Valo case IEEE80211_STA_RX_BW_160: 151e705c121SKalle Valo add_sta_cmd.station_flags |= cpu_to_le32(STA_FLG_FAT_EN_160MHZ); 152e705c121SKalle Valo /* fall through */ 153e705c121SKalle Valo case IEEE80211_STA_RX_BW_80: 154e705c121SKalle Valo add_sta_cmd.station_flags |= cpu_to_le32(STA_FLG_FAT_EN_80MHZ); 155e705c121SKalle Valo /* fall through */ 156e705c121SKalle Valo case IEEE80211_STA_RX_BW_40: 157e705c121SKalle Valo add_sta_cmd.station_flags |= cpu_to_le32(STA_FLG_FAT_EN_40MHZ); 158e705c121SKalle Valo /* fall through */ 159e705c121SKalle Valo case IEEE80211_STA_RX_BW_20: 160e705c121SKalle Valo if (sta->ht_cap.ht_supported) 161e705c121SKalle Valo add_sta_cmd.station_flags |= 162e705c121SKalle Valo cpu_to_le32(STA_FLG_FAT_EN_20MHZ); 163e705c121SKalle Valo break; 164e705c121SKalle Valo } 165e705c121SKalle Valo 166e705c121SKalle Valo switch (sta->rx_nss) { 167e705c121SKalle Valo case 1: 168e705c121SKalle Valo add_sta_cmd.station_flags |= cpu_to_le32(STA_FLG_MIMO_EN_SISO); 169e705c121SKalle Valo break; 170e705c121SKalle Valo case 2: 171e705c121SKalle Valo add_sta_cmd.station_flags |= cpu_to_le32(STA_FLG_MIMO_EN_MIMO2); 172e705c121SKalle Valo break; 173e705c121SKalle Valo case 3 ... 8: 174e705c121SKalle Valo add_sta_cmd.station_flags |= cpu_to_le32(STA_FLG_MIMO_EN_MIMO3); 175e705c121SKalle Valo break; 176e705c121SKalle Valo } 177e705c121SKalle Valo 178e705c121SKalle Valo switch (sta->smps_mode) { 179e705c121SKalle Valo case IEEE80211_SMPS_AUTOMATIC: 180e705c121SKalle Valo case IEEE80211_SMPS_NUM_MODES: 181e705c121SKalle Valo WARN_ON(1); 182e705c121SKalle Valo break; 183e705c121SKalle Valo case IEEE80211_SMPS_STATIC: 184e705c121SKalle Valo /* override NSS */ 185e705c121SKalle Valo add_sta_cmd.station_flags &= ~cpu_to_le32(STA_FLG_MIMO_EN_MSK); 186e705c121SKalle Valo add_sta_cmd.station_flags |= cpu_to_le32(STA_FLG_MIMO_EN_SISO); 187e705c121SKalle Valo break; 188e705c121SKalle Valo case IEEE80211_SMPS_DYNAMIC: 189e705c121SKalle Valo add_sta_cmd.station_flags |= cpu_to_le32(STA_FLG_RTS_MIMO_PROT); 190e705c121SKalle Valo break; 191e705c121SKalle Valo case IEEE80211_SMPS_OFF: 192e705c121SKalle Valo /* nothing */ 193e705c121SKalle Valo break; 194e705c121SKalle Valo } 195e705c121SKalle Valo 196e705c121SKalle Valo if (sta->ht_cap.ht_supported) { 197e705c121SKalle Valo add_sta_cmd.station_flags_msk |= 198e705c121SKalle Valo cpu_to_le32(STA_FLG_MAX_AGG_SIZE_MSK | 199e705c121SKalle Valo STA_FLG_AGG_MPDU_DENS_MSK); 200e705c121SKalle Valo 201e705c121SKalle Valo mpdu_dens = sta->ht_cap.ampdu_density; 202e705c121SKalle Valo } 203e705c121SKalle Valo 204e705c121SKalle Valo if (sta->vht_cap.vht_supported) { 205e705c121SKalle Valo agg_size = sta->vht_cap.cap & 206e705c121SKalle Valo IEEE80211_VHT_CAP_MAX_A_MPDU_LENGTH_EXPONENT_MASK; 207e705c121SKalle Valo agg_size >>= 208e705c121SKalle Valo IEEE80211_VHT_CAP_MAX_A_MPDU_LENGTH_EXPONENT_SHIFT; 209e705c121SKalle Valo } else if (sta->ht_cap.ht_supported) { 210e705c121SKalle Valo agg_size = sta->ht_cap.ampdu_factor; 211e705c121SKalle Valo } 212e705c121SKalle Valo 213e705c121SKalle Valo add_sta_cmd.station_flags |= 214e705c121SKalle Valo cpu_to_le32(agg_size << STA_FLG_MAX_AGG_SIZE_SHIFT); 215e705c121SKalle Valo add_sta_cmd.station_flags |= 216e705c121SKalle Valo cpu_to_le32(mpdu_dens << STA_FLG_AGG_MPDU_DENS_SHIFT); 2176ea29ce5SJohannes Berg if (mvm_sta->associated) 21819c52f46SEmmanuel Grumbach add_sta_cmd.assoc_id = cpu_to_le16(sta->aid); 219e705c121SKalle Valo 22065e25482SJohannes Berg if (sta->wme) { 22165e25482SJohannes Berg add_sta_cmd.modify_mask |= STA_MODIFY_UAPSD_ACS; 22265e25482SJohannes Berg 22365e25482SJohannes Berg if (sta->uapsd_queues & IEEE80211_WMM_IE_STA_QOSINFO_AC_BK) 224c80eb570SEmmanuel Grumbach add_sta_cmd.uapsd_acs |= BIT(AC_BK); 22565e25482SJohannes Berg if (sta->uapsd_queues & IEEE80211_WMM_IE_STA_QOSINFO_AC_BE) 226c80eb570SEmmanuel Grumbach add_sta_cmd.uapsd_acs |= BIT(AC_BE); 22765e25482SJohannes Berg if (sta->uapsd_queues & IEEE80211_WMM_IE_STA_QOSINFO_AC_VI) 228c80eb570SEmmanuel Grumbach add_sta_cmd.uapsd_acs |= BIT(AC_VI); 22965e25482SJohannes Berg if (sta->uapsd_queues & IEEE80211_WMM_IE_STA_QOSINFO_AC_VO) 230c80eb570SEmmanuel Grumbach add_sta_cmd.uapsd_acs |= BIT(AC_VO); 231c80eb570SEmmanuel Grumbach add_sta_cmd.uapsd_acs |= add_sta_cmd.uapsd_acs << 4; 232e71ca5eaSEmmanuel Grumbach add_sta_cmd.sp_length = sta->max_sp ? sta->max_sp * 2 : 128; 23365e25482SJohannes Berg } 23465e25482SJohannes Berg 235e705c121SKalle Valo status = ADD_STA_SUCCESS; 236854c5705SSara Sharon ret = iwl_mvm_send_cmd_pdu_status(mvm, ADD_STA, 237854c5705SSara Sharon iwl_mvm_add_sta_cmd_size(mvm), 238e705c121SKalle Valo &add_sta_cmd, &status); 239e705c121SKalle Valo if (ret) 240e705c121SKalle Valo return ret; 241e705c121SKalle Valo 242837c4da9SSara Sharon switch (status & IWL_ADD_STA_STATUS_MASK) { 243e705c121SKalle Valo case ADD_STA_SUCCESS: 244e705c121SKalle Valo IWL_DEBUG_ASSOC(mvm, "ADD_STA PASSED\n"); 245e705c121SKalle Valo break; 246e705c121SKalle Valo default: 247e705c121SKalle Valo ret = -EIO; 248e705c121SKalle Valo IWL_ERR(mvm, "ADD_STA failed\n"); 249e705c121SKalle Valo break; 250e705c121SKalle Valo } 251e705c121SKalle Valo 252e705c121SKalle Valo return ret; 253e705c121SKalle Valo } 254e705c121SKalle Valo 2558cef5344SKees Cook static void iwl_mvm_rx_agg_session_expired(struct timer_list *t) 25610b2b201SSara Sharon { 2578cef5344SKees Cook struct iwl_mvm_baid_data *data = 2588cef5344SKees Cook from_timer(data, t, session_timer); 2598cef5344SKees Cook struct iwl_mvm_baid_data __rcu **rcu_ptr = data->rcu_ptr; 26010b2b201SSara Sharon struct iwl_mvm_baid_data *ba_data; 26110b2b201SSara Sharon struct ieee80211_sta *sta; 26210b2b201SSara Sharon struct iwl_mvm_sta *mvm_sta; 26310b2b201SSara Sharon unsigned long timeout; 26410b2b201SSara Sharon 26510b2b201SSara Sharon rcu_read_lock(); 26610b2b201SSara Sharon 26710b2b201SSara Sharon ba_data = rcu_dereference(*rcu_ptr); 26810b2b201SSara Sharon 26910b2b201SSara Sharon if (WARN_ON(!ba_data)) 27010b2b201SSara Sharon goto unlock; 27110b2b201SSara Sharon 27210b2b201SSara Sharon if (!ba_data->timeout) 27310b2b201SSara Sharon goto unlock; 27410b2b201SSara Sharon 27510b2b201SSara Sharon timeout = ba_data->last_rx + TU_TO_JIFFIES(ba_data->timeout * 2); 27610b2b201SSara Sharon if (time_is_after_jiffies(timeout)) { 27710b2b201SSara Sharon mod_timer(&ba_data->session_timer, timeout); 27810b2b201SSara Sharon goto unlock; 27910b2b201SSara Sharon } 28010b2b201SSara Sharon 28110b2b201SSara Sharon /* Timer expired */ 28210b2b201SSara Sharon sta = rcu_dereference(ba_data->mvm->fw_id_to_mac_id[ba_data->sta_id]); 28361dd8a8aSEmmanuel Grumbach 28461dd8a8aSEmmanuel Grumbach /* 28561dd8a8aSEmmanuel Grumbach * sta should be valid unless the following happens: 28661dd8a8aSEmmanuel Grumbach * The firmware asserts which triggers a reconfig flow, but 28761dd8a8aSEmmanuel Grumbach * the reconfig fails before we set the pointer to sta into 28861dd8a8aSEmmanuel Grumbach * the fw_id_to_mac_id pointer table. Mac80211 can't stop 28961dd8a8aSEmmanuel Grumbach * A-MDPU and hence the timer continues to run. Then, the 29061dd8a8aSEmmanuel Grumbach * timer expires and sta is NULL. 29161dd8a8aSEmmanuel Grumbach */ 29261dd8a8aSEmmanuel Grumbach if (!sta) 29361dd8a8aSEmmanuel Grumbach goto unlock; 29461dd8a8aSEmmanuel Grumbach 29510b2b201SSara Sharon mvm_sta = iwl_mvm_sta_from_mac80211(sta); 29620fc690fSNaftali Goldstein ieee80211_rx_ba_timer_expired(mvm_sta->vif, 29710b2b201SSara Sharon sta->addr, ba_data->tid); 29810b2b201SSara Sharon unlock: 29910b2b201SSara Sharon rcu_read_unlock(); 30010b2b201SSara Sharon } 30110b2b201SSara Sharon 3029794c64fSLiad Kaufman /* Disable aggregations for a bitmap of TIDs for a given station */ 3039794c64fSLiad Kaufman static int iwl_mvm_invalidate_sta_queue(struct iwl_mvm *mvm, int queue, 3049794c64fSLiad Kaufman unsigned long disable_agg_tids, 3059794c64fSLiad Kaufman bool remove_queue) 3069794c64fSLiad Kaufman { 3079794c64fSLiad Kaufman struct iwl_mvm_add_sta_cmd cmd = {}; 3089794c64fSLiad Kaufman struct ieee80211_sta *sta; 3099794c64fSLiad Kaufman struct iwl_mvm_sta *mvmsta; 3109794c64fSLiad Kaufman u32 status; 3119794c64fSLiad Kaufman u8 sta_id; 3129794c64fSLiad Kaufman int ret; 3139794c64fSLiad Kaufman 314bb49701bSSara Sharon if (WARN_ON(iwl_mvm_has_new_tx_api(mvm))) 315bb49701bSSara Sharon return -EINVAL; 316bb49701bSSara Sharon 3179794c64fSLiad Kaufman spin_lock_bh(&mvm->queue_info_lock); 3189794c64fSLiad Kaufman sta_id = mvm->queue_info[queue].ra_sta_id; 3199794c64fSLiad Kaufman spin_unlock_bh(&mvm->queue_info_lock); 3209794c64fSLiad Kaufman 3219794c64fSLiad Kaufman rcu_read_lock(); 3229794c64fSLiad Kaufman 3239794c64fSLiad Kaufman sta = rcu_dereference(mvm->fw_id_to_mac_id[sta_id]); 3249794c64fSLiad Kaufman 3259794c64fSLiad Kaufman if (WARN_ON_ONCE(IS_ERR_OR_NULL(sta))) { 3269794c64fSLiad Kaufman rcu_read_unlock(); 3279794c64fSLiad Kaufman return -EINVAL; 3289794c64fSLiad Kaufman } 3299794c64fSLiad Kaufman 3309794c64fSLiad Kaufman mvmsta = iwl_mvm_sta_from_mac80211(sta); 3319794c64fSLiad Kaufman 3329794c64fSLiad Kaufman mvmsta->tid_disable_agg |= disable_agg_tids; 3339794c64fSLiad Kaufman 3349794c64fSLiad Kaufman cmd.mac_id_n_color = cpu_to_le32(mvmsta->mac_id_n_color); 3359794c64fSLiad Kaufman cmd.sta_id = mvmsta->sta_id; 3369794c64fSLiad Kaufman cmd.add_modify = STA_MODE_MODIFY; 3379794c64fSLiad Kaufman cmd.modify_mask = STA_MODIFY_QUEUES; 3389794c64fSLiad Kaufman if (disable_agg_tids) 3399794c64fSLiad Kaufman cmd.modify_mask |= STA_MODIFY_TID_DISABLE_TX; 3409794c64fSLiad Kaufman if (remove_queue) 3419794c64fSLiad Kaufman cmd.modify_mask |= STA_MODIFY_QUEUE_REMOVAL; 3429794c64fSLiad Kaufman cmd.tfd_queue_msk = cpu_to_le32(mvmsta->tfd_queue_msk); 3439794c64fSLiad Kaufman cmd.tid_disable_tx = cpu_to_le16(mvmsta->tid_disable_agg); 3449794c64fSLiad Kaufman 3459794c64fSLiad Kaufman rcu_read_unlock(); 3469794c64fSLiad Kaufman 3479794c64fSLiad Kaufman /* Notify FW of queue removal from the STA queues */ 3489794c64fSLiad Kaufman status = ADD_STA_SUCCESS; 3499794c64fSLiad Kaufman ret = iwl_mvm_send_cmd_pdu_status(mvm, ADD_STA, 3509794c64fSLiad Kaufman iwl_mvm_add_sta_cmd_size(mvm), 3519794c64fSLiad Kaufman &cmd, &status); 3529794c64fSLiad Kaufman 3539794c64fSLiad Kaufman return ret; 3549794c64fSLiad Kaufman } 3559794c64fSLiad Kaufman 35642db09c1SLiad Kaufman static int iwl_mvm_get_queue_agg_tids(struct iwl_mvm *mvm, int queue) 35742db09c1SLiad Kaufman { 35842db09c1SLiad Kaufman struct ieee80211_sta *sta; 35942db09c1SLiad Kaufman struct iwl_mvm_sta *mvmsta; 36042db09c1SLiad Kaufman unsigned long tid_bitmap; 36142db09c1SLiad Kaufman unsigned long agg_tids = 0; 362806911daSSharon Dvir u8 sta_id; 36342db09c1SLiad Kaufman int tid; 36442db09c1SLiad Kaufman 36542db09c1SLiad Kaufman lockdep_assert_held(&mvm->mutex); 36642db09c1SLiad Kaufman 367bb49701bSSara Sharon if (WARN_ON(iwl_mvm_has_new_tx_api(mvm))) 368bb49701bSSara Sharon return -EINVAL; 369bb49701bSSara Sharon 37042db09c1SLiad Kaufman spin_lock_bh(&mvm->queue_info_lock); 37142db09c1SLiad Kaufman sta_id = mvm->queue_info[queue].ra_sta_id; 37242db09c1SLiad Kaufman tid_bitmap = mvm->queue_info[queue].tid_bitmap; 37342db09c1SLiad Kaufman spin_unlock_bh(&mvm->queue_info_lock); 37442db09c1SLiad Kaufman 37542db09c1SLiad Kaufman sta = rcu_dereference_protected(mvm->fw_id_to_mac_id[sta_id], 37642db09c1SLiad Kaufman lockdep_is_held(&mvm->mutex)); 37742db09c1SLiad Kaufman 37842db09c1SLiad Kaufman if (WARN_ON_ONCE(IS_ERR_OR_NULL(sta))) 37942db09c1SLiad Kaufman return -EINVAL; 38042db09c1SLiad Kaufman 38142db09c1SLiad Kaufman mvmsta = iwl_mvm_sta_from_mac80211(sta); 38242db09c1SLiad Kaufman 38342db09c1SLiad Kaufman spin_lock_bh(&mvmsta->lock); 38442db09c1SLiad Kaufman for_each_set_bit(tid, &tid_bitmap, IWL_MAX_TID_COUNT + 1) { 38542db09c1SLiad Kaufman if (mvmsta->tid_data[tid].state == IWL_AGG_ON) 38642db09c1SLiad Kaufman agg_tids |= BIT(tid); 38742db09c1SLiad Kaufman } 38842db09c1SLiad Kaufman spin_unlock_bh(&mvmsta->lock); 38942db09c1SLiad Kaufman 39042db09c1SLiad Kaufman return agg_tids; 39142db09c1SLiad Kaufman } 39242db09c1SLiad Kaufman 3939794c64fSLiad Kaufman /* 3949794c64fSLiad Kaufman * Remove a queue from a station's resources. 3959794c64fSLiad Kaufman * Note that this only marks as free. It DOESN'T delete a BA agreement, and 3969794c64fSLiad Kaufman * doesn't disable the queue 3979794c64fSLiad Kaufman */ 3989794c64fSLiad Kaufman static int iwl_mvm_remove_sta_queue_marking(struct iwl_mvm *mvm, int queue) 3999794c64fSLiad Kaufman { 4009794c64fSLiad Kaufman struct ieee80211_sta *sta; 4019794c64fSLiad Kaufman struct iwl_mvm_sta *mvmsta; 4029794c64fSLiad Kaufman unsigned long tid_bitmap; 4039794c64fSLiad Kaufman unsigned long disable_agg_tids = 0; 4049794c64fSLiad Kaufman u8 sta_id; 4059794c64fSLiad Kaufman int tid; 4069794c64fSLiad Kaufman 4079794c64fSLiad Kaufman lockdep_assert_held(&mvm->mutex); 4089794c64fSLiad Kaufman 409bb49701bSSara Sharon if (WARN_ON(iwl_mvm_has_new_tx_api(mvm))) 410bb49701bSSara Sharon return -EINVAL; 411bb49701bSSara Sharon 4129794c64fSLiad Kaufman spin_lock_bh(&mvm->queue_info_lock); 4139794c64fSLiad Kaufman sta_id = mvm->queue_info[queue].ra_sta_id; 4149794c64fSLiad Kaufman tid_bitmap = mvm->queue_info[queue].tid_bitmap; 4159794c64fSLiad Kaufman spin_unlock_bh(&mvm->queue_info_lock); 4169794c64fSLiad Kaufman 4179794c64fSLiad Kaufman rcu_read_lock(); 4189794c64fSLiad Kaufman 4199794c64fSLiad Kaufman sta = rcu_dereference(mvm->fw_id_to_mac_id[sta_id]); 4209794c64fSLiad Kaufman 4219794c64fSLiad Kaufman if (WARN_ON_ONCE(IS_ERR_OR_NULL(sta))) { 4229794c64fSLiad Kaufman rcu_read_unlock(); 4239794c64fSLiad Kaufman return 0; 4249794c64fSLiad Kaufman } 4259794c64fSLiad Kaufman 4269794c64fSLiad Kaufman mvmsta = iwl_mvm_sta_from_mac80211(sta); 4279794c64fSLiad Kaufman 4289794c64fSLiad Kaufman spin_lock_bh(&mvmsta->lock); 42942db09c1SLiad Kaufman /* Unmap MAC queues and TIDs from this queue */ 4309794c64fSLiad Kaufman for_each_set_bit(tid, &tid_bitmap, IWL_MAX_TID_COUNT + 1) { 4319794c64fSLiad Kaufman if (mvmsta->tid_data[tid].state == IWL_AGG_ON) 4329794c64fSLiad Kaufman disable_agg_tids |= BIT(tid); 4336862fceeSSara Sharon mvmsta->tid_data[tid].txq_id = IWL_MVM_INVALID_QUEUE; 4349794c64fSLiad Kaufman } 4359794c64fSLiad Kaufman 43642db09c1SLiad Kaufman mvmsta->tfd_queue_msk &= ~BIT(queue); /* Don't use this queue anymore */ 4379794c64fSLiad Kaufman spin_unlock_bh(&mvmsta->lock); 4389794c64fSLiad Kaufman 4399794c64fSLiad Kaufman rcu_read_unlock(); 4409794c64fSLiad Kaufman 4419794c64fSLiad Kaufman return disable_agg_tids; 4429794c64fSLiad Kaufman } 4439794c64fSLiad Kaufman 44401796ff2SSara Sharon static int iwl_mvm_free_inactive_queue(struct iwl_mvm *mvm, int queue, 44501796ff2SSara Sharon bool same_sta) 44601796ff2SSara Sharon { 44701796ff2SSara Sharon struct iwl_mvm_sta *mvmsta; 44801796ff2SSara Sharon u8 txq_curr_ac, sta_id, tid; 44901796ff2SSara Sharon unsigned long disable_agg_tids = 0; 45001796ff2SSara Sharon int ret; 45101796ff2SSara Sharon 45201796ff2SSara Sharon lockdep_assert_held(&mvm->mutex); 45301796ff2SSara Sharon 454bb49701bSSara Sharon if (WARN_ON(iwl_mvm_has_new_tx_api(mvm))) 455bb49701bSSara Sharon return -EINVAL; 456bb49701bSSara Sharon 45701796ff2SSara Sharon spin_lock_bh(&mvm->queue_info_lock); 45801796ff2SSara Sharon txq_curr_ac = mvm->queue_info[queue].mac80211_ac; 45901796ff2SSara Sharon sta_id = mvm->queue_info[queue].ra_sta_id; 46001796ff2SSara Sharon tid = mvm->queue_info[queue].txq_tid; 46101796ff2SSara Sharon spin_unlock_bh(&mvm->queue_info_lock); 46201796ff2SSara Sharon 46301796ff2SSara Sharon mvmsta = iwl_mvm_sta_from_staid_protected(mvm, sta_id); 464e3df1e4bSSharon Dvir if (WARN_ON(!mvmsta)) 465e3df1e4bSSharon Dvir return -EINVAL; 46601796ff2SSara Sharon 46701796ff2SSara Sharon disable_agg_tids = iwl_mvm_remove_sta_queue_marking(mvm, queue); 46801796ff2SSara Sharon /* Disable the queue */ 46901796ff2SSara Sharon if (disable_agg_tids) 47001796ff2SSara Sharon iwl_mvm_invalidate_sta_queue(mvm, queue, 47101796ff2SSara Sharon disable_agg_tids, false); 47201796ff2SSara Sharon 47301796ff2SSara Sharon ret = iwl_mvm_disable_txq(mvm, queue, 47401796ff2SSara Sharon mvmsta->vif->hw_queue[txq_curr_ac], 47501796ff2SSara Sharon tid, 0); 47601796ff2SSara Sharon if (ret) { 47701796ff2SSara Sharon /* Re-mark the inactive queue as inactive */ 47801796ff2SSara Sharon spin_lock_bh(&mvm->queue_info_lock); 47901796ff2SSara Sharon mvm->queue_info[queue].status = IWL_MVM_QUEUE_INACTIVE; 48001796ff2SSara Sharon spin_unlock_bh(&mvm->queue_info_lock); 48101796ff2SSara Sharon IWL_ERR(mvm, 48201796ff2SSara Sharon "Failed to free inactive queue %d (ret=%d)\n", 48301796ff2SSara Sharon queue, ret); 48401796ff2SSara Sharon 48501796ff2SSara Sharon return ret; 48601796ff2SSara Sharon } 48701796ff2SSara Sharon 48801796ff2SSara Sharon /* If TXQ is allocated to another STA, update removal in FW */ 48901796ff2SSara Sharon if (!same_sta) 49001796ff2SSara Sharon iwl_mvm_invalidate_sta_queue(mvm, queue, 0, true); 49101796ff2SSara Sharon 49201796ff2SSara Sharon return 0; 49301796ff2SSara Sharon } 49401796ff2SSara Sharon 49542db09c1SLiad Kaufman static int iwl_mvm_get_shared_queue(struct iwl_mvm *mvm, 49642db09c1SLiad Kaufman unsigned long tfd_queue_mask, u8 ac) 49742db09c1SLiad Kaufman { 49842db09c1SLiad Kaufman int queue = 0; 49942db09c1SLiad Kaufman u8 ac_to_queue[IEEE80211_NUM_ACS]; 50042db09c1SLiad Kaufman int i; 50142db09c1SLiad Kaufman 50242db09c1SLiad Kaufman lockdep_assert_held(&mvm->queue_info_lock); 503bb49701bSSara Sharon if (WARN_ON(iwl_mvm_has_new_tx_api(mvm))) 504bb49701bSSara Sharon return -EINVAL; 50542db09c1SLiad Kaufman 50642db09c1SLiad Kaufman memset(&ac_to_queue, IEEE80211_INVAL_HW_QUEUE, sizeof(ac_to_queue)); 50742db09c1SLiad Kaufman 50842db09c1SLiad Kaufman /* See what ACs the existing queues for this STA have */ 50942db09c1SLiad Kaufman for_each_set_bit(i, &tfd_queue_mask, IWL_MVM_DQA_MAX_DATA_QUEUE) { 51042db09c1SLiad Kaufman /* Only DATA queues can be shared */ 51142db09c1SLiad Kaufman if (i < IWL_MVM_DQA_MIN_DATA_QUEUE && 51242db09c1SLiad Kaufman i != IWL_MVM_DQA_BSS_CLIENT_QUEUE) 51342db09c1SLiad Kaufman continue; 51442db09c1SLiad Kaufman 5159f9af3d7SLiad Kaufman /* Don't try and take queues being reconfigured */ 5169f9af3d7SLiad Kaufman if (mvm->queue_info[queue].status == 5179f9af3d7SLiad Kaufman IWL_MVM_QUEUE_RECONFIGURING) 5189f9af3d7SLiad Kaufman continue; 5199f9af3d7SLiad Kaufman 52042db09c1SLiad Kaufman ac_to_queue[mvm->queue_info[i].mac80211_ac] = i; 52142db09c1SLiad Kaufman } 52242db09c1SLiad Kaufman 52342db09c1SLiad Kaufman /* 52442db09c1SLiad Kaufman * The queue to share is chosen only from DATA queues as follows (in 52542db09c1SLiad Kaufman * descending priority): 52642db09c1SLiad Kaufman * 1. An AC_BE queue 52742db09c1SLiad Kaufman * 2. Same AC queue 52842db09c1SLiad Kaufman * 3. Highest AC queue that is lower than new AC 52942db09c1SLiad Kaufman * 4. Any existing AC (there always is at least 1 DATA queue) 53042db09c1SLiad Kaufman */ 53142db09c1SLiad Kaufman 53242db09c1SLiad Kaufman /* Priority 1: An AC_BE queue */ 53342db09c1SLiad Kaufman if (ac_to_queue[IEEE80211_AC_BE] != IEEE80211_INVAL_HW_QUEUE) 53442db09c1SLiad Kaufman queue = ac_to_queue[IEEE80211_AC_BE]; 53542db09c1SLiad Kaufman /* Priority 2: Same AC queue */ 53642db09c1SLiad Kaufman else if (ac_to_queue[ac] != IEEE80211_INVAL_HW_QUEUE) 53742db09c1SLiad Kaufman queue = ac_to_queue[ac]; 53842db09c1SLiad Kaufman /* Priority 3a: If new AC is VO and VI exists - use VI */ 53942db09c1SLiad Kaufman else if (ac == IEEE80211_AC_VO && 54042db09c1SLiad Kaufman ac_to_queue[IEEE80211_AC_VI] != IEEE80211_INVAL_HW_QUEUE) 54142db09c1SLiad Kaufman queue = ac_to_queue[IEEE80211_AC_VI]; 54242db09c1SLiad Kaufman /* Priority 3b: No BE so only AC less than the new one is BK */ 54342db09c1SLiad Kaufman else if (ac_to_queue[IEEE80211_AC_BK] != IEEE80211_INVAL_HW_QUEUE) 54442db09c1SLiad Kaufman queue = ac_to_queue[IEEE80211_AC_BK]; 54542db09c1SLiad Kaufman /* Priority 4a: No BE nor BK - use VI if exists */ 54642db09c1SLiad Kaufman else if (ac_to_queue[IEEE80211_AC_VI] != IEEE80211_INVAL_HW_QUEUE) 54742db09c1SLiad Kaufman queue = ac_to_queue[IEEE80211_AC_VI]; 54842db09c1SLiad Kaufman /* Priority 4b: No BE, BK nor VI - use VO if exists */ 54942db09c1SLiad Kaufman else if (ac_to_queue[IEEE80211_AC_VO] != IEEE80211_INVAL_HW_QUEUE) 55042db09c1SLiad Kaufman queue = ac_to_queue[IEEE80211_AC_VO]; 55142db09c1SLiad Kaufman 55242db09c1SLiad Kaufman /* Make sure queue found (or not) is legal */ 5539f9af3d7SLiad Kaufman if (!iwl_mvm_is_dqa_data_queue(mvm, queue) && 5549f9af3d7SLiad Kaufman !iwl_mvm_is_dqa_mgmt_queue(mvm, queue) && 5559f9af3d7SLiad Kaufman (queue != IWL_MVM_DQA_BSS_CLIENT_QUEUE)) { 55642db09c1SLiad Kaufman IWL_ERR(mvm, "No DATA queues available to share\n"); 5579f9af3d7SLiad Kaufman return -ENOSPC; 5589f9af3d7SLiad Kaufman } 5599f9af3d7SLiad Kaufman 5609f9af3d7SLiad Kaufman /* Make sure the queue isn't in the middle of being reconfigured */ 5619f9af3d7SLiad Kaufman if (mvm->queue_info[queue].status == IWL_MVM_QUEUE_RECONFIGURING) { 5629f9af3d7SLiad Kaufman IWL_ERR(mvm, 5639f9af3d7SLiad Kaufman "TXQ %d is in the middle of re-config - try again\n", 5649f9af3d7SLiad Kaufman queue); 5659f9af3d7SLiad Kaufman return -EBUSY; 56642db09c1SLiad Kaufman } 56742db09c1SLiad Kaufman 56842db09c1SLiad Kaufman return queue; 56942db09c1SLiad Kaufman } 57042db09c1SLiad Kaufman 57158f2cc57SLiad Kaufman /* 5729f9af3d7SLiad Kaufman * If a given queue has a higher AC than the TID stream that is being compared 5739f9af3d7SLiad Kaufman * to, the queue needs to be redirected to the lower AC. This function does that 57458f2cc57SLiad Kaufman * in such a case, otherwise - if no redirection required - it does nothing, 57558f2cc57SLiad Kaufman * unless the %force param is true. 57658f2cc57SLiad Kaufman */ 5779f9af3d7SLiad Kaufman int iwl_mvm_scd_queue_redirect(struct iwl_mvm *mvm, int queue, int tid, 57858f2cc57SLiad Kaufman int ac, int ssn, unsigned int wdg_timeout, 57958f2cc57SLiad Kaufman bool force) 58058f2cc57SLiad Kaufman { 58158f2cc57SLiad Kaufman struct iwl_scd_txq_cfg_cmd cmd = { 58258f2cc57SLiad Kaufman .scd_queue = queue, 583f7c692deSLiad Kaufman .action = SCD_CFG_DISABLE_QUEUE, 58458f2cc57SLiad Kaufman }; 58558f2cc57SLiad Kaufman bool shared_queue; 58658f2cc57SLiad Kaufman unsigned long mq; 58758f2cc57SLiad Kaufman int ret; 58858f2cc57SLiad Kaufman 589bb49701bSSara Sharon if (WARN_ON(iwl_mvm_has_new_tx_api(mvm))) 590bb49701bSSara Sharon return -EINVAL; 591bb49701bSSara Sharon 59258f2cc57SLiad Kaufman /* 59358f2cc57SLiad Kaufman * If the AC is lower than current one - FIFO needs to be redirected to 59458f2cc57SLiad Kaufman * the lowest one of the streams in the queue. Check if this is needed 59558f2cc57SLiad Kaufman * here. 59658f2cc57SLiad Kaufman * Notice that the enum ieee80211_ac_numbers is "flipped", so BK is with 59758f2cc57SLiad Kaufman * value 3 and VO with value 0, so to check if ac X is lower than ac Y 59858f2cc57SLiad Kaufman * we need to check if the numerical value of X is LARGER than of Y. 59958f2cc57SLiad Kaufman */ 60058f2cc57SLiad Kaufman spin_lock_bh(&mvm->queue_info_lock); 60158f2cc57SLiad Kaufman if (ac <= mvm->queue_info[queue].mac80211_ac && !force) { 60258f2cc57SLiad Kaufman spin_unlock_bh(&mvm->queue_info_lock); 60358f2cc57SLiad Kaufman 60458f2cc57SLiad Kaufman IWL_DEBUG_TX_QUEUES(mvm, 60558f2cc57SLiad Kaufman "No redirection needed on TXQ #%d\n", 60658f2cc57SLiad Kaufman queue); 60758f2cc57SLiad Kaufman return 0; 60858f2cc57SLiad Kaufman } 60958f2cc57SLiad Kaufman 61058f2cc57SLiad Kaufman cmd.sta_id = mvm->queue_info[queue].ra_sta_id; 61158f2cc57SLiad Kaufman cmd.tx_fifo = iwl_mvm_ac_to_tx_fifo[mvm->queue_info[queue].mac80211_ac]; 612edbe961cSLiad Kaufman cmd.tid = mvm->queue_info[queue].txq_tid; 61334e10860SSara Sharon mq = mvm->hw_queue_to_mac80211[queue]; 61458f2cc57SLiad Kaufman shared_queue = (mvm->queue_info[queue].hw_queue_refcount > 1); 61558f2cc57SLiad Kaufman spin_unlock_bh(&mvm->queue_info_lock); 61658f2cc57SLiad Kaufman 6179f9af3d7SLiad Kaufman IWL_DEBUG_TX_QUEUES(mvm, "Redirecting TXQ #%d to FIFO #%d\n", 61858f2cc57SLiad Kaufman queue, iwl_mvm_ac_to_tx_fifo[ac]); 61958f2cc57SLiad Kaufman 62058f2cc57SLiad Kaufman /* Stop MAC queues and wait for this queue to empty */ 62158f2cc57SLiad Kaufman iwl_mvm_stop_mac_queues(mvm, mq); 622a1a57877SSara Sharon ret = iwl_trans_wait_tx_queues_empty(mvm->trans, BIT(queue)); 62358f2cc57SLiad Kaufman if (ret) { 62458f2cc57SLiad Kaufman IWL_ERR(mvm, "Error draining queue %d before reconfig\n", 62558f2cc57SLiad Kaufman queue); 62658f2cc57SLiad Kaufman ret = -EIO; 62758f2cc57SLiad Kaufman goto out; 62858f2cc57SLiad Kaufman } 62958f2cc57SLiad Kaufman 63058f2cc57SLiad Kaufman /* Before redirecting the queue we need to de-activate it */ 63158f2cc57SLiad Kaufman iwl_trans_txq_disable(mvm->trans, queue, false); 63258f2cc57SLiad Kaufman ret = iwl_mvm_send_cmd_pdu(mvm, SCD_QUEUE_CFG, 0, sizeof(cmd), &cmd); 63358f2cc57SLiad Kaufman if (ret) 63458f2cc57SLiad Kaufman IWL_ERR(mvm, "Failed SCD disable TXQ %d (ret=%d)\n", queue, 63558f2cc57SLiad Kaufman ret); 63658f2cc57SLiad Kaufman 63758f2cc57SLiad Kaufman /* Make sure the SCD wrptr is correctly set before reconfiguring */ 638ca3b9c6bSSara Sharon iwl_trans_txq_enable_cfg(mvm->trans, queue, ssn, NULL, wdg_timeout); 63958f2cc57SLiad Kaufman 640edbe961cSLiad Kaufman /* Update the TID "owner" of the queue */ 641edbe961cSLiad Kaufman spin_lock_bh(&mvm->queue_info_lock); 642edbe961cSLiad Kaufman mvm->queue_info[queue].txq_tid = tid; 643edbe961cSLiad Kaufman spin_unlock_bh(&mvm->queue_info_lock); 644edbe961cSLiad Kaufman 64558f2cc57SLiad Kaufman /* TODO: Work-around SCD bug when moving back by multiples of 0x40 */ 64658f2cc57SLiad Kaufman 64758f2cc57SLiad Kaufman /* Redirect to lower AC */ 64858f2cc57SLiad Kaufman iwl_mvm_reconfig_scd(mvm, queue, iwl_mvm_ac_to_tx_fifo[ac], 6490ec9257bSSara Sharon cmd.sta_id, tid, IWL_FRAME_LIMIT, ssn); 65058f2cc57SLiad Kaufman 65158f2cc57SLiad Kaufman /* Update AC marking of the queue */ 65258f2cc57SLiad Kaufman spin_lock_bh(&mvm->queue_info_lock); 65358f2cc57SLiad Kaufman mvm->queue_info[queue].mac80211_ac = ac; 65458f2cc57SLiad Kaufman spin_unlock_bh(&mvm->queue_info_lock); 65558f2cc57SLiad Kaufman 65658f2cc57SLiad Kaufman /* 65758f2cc57SLiad Kaufman * Mark queue as shared in transport if shared 65858f2cc57SLiad Kaufman * Note this has to be done after queue enablement because enablement 65958f2cc57SLiad Kaufman * can also set this value, and there is no indication there to shared 66058f2cc57SLiad Kaufman * queues 66158f2cc57SLiad Kaufman */ 66258f2cc57SLiad Kaufman if (shared_queue) 66358f2cc57SLiad Kaufman iwl_trans_txq_set_shared_mode(mvm->trans, queue, true); 66458f2cc57SLiad Kaufman 66558f2cc57SLiad Kaufman out: 66658f2cc57SLiad Kaufman /* Continue using the MAC queues */ 66758f2cc57SLiad Kaufman iwl_mvm_start_mac_queues(mvm, mq); 66858f2cc57SLiad Kaufman 66958f2cc57SLiad Kaufman return ret; 67058f2cc57SLiad Kaufman } 67158f2cc57SLiad Kaufman 672310181ecSSara Sharon static int iwl_mvm_sta_alloc_queue_tvqm(struct iwl_mvm *mvm, 673310181ecSSara Sharon struct ieee80211_sta *sta, u8 ac, 674310181ecSSara Sharon int tid) 675310181ecSSara Sharon { 676310181ecSSara Sharon struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta); 677310181ecSSara Sharon unsigned int wdg_timeout = 678310181ecSSara Sharon iwl_mvm_get_wd_timeout(mvm, mvmsta->vif, false, false); 679310181ecSSara Sharon u8 mac_queue = mvmsta->vif->hw_queue[ac]; 680310181ecSSara Sharon int queue = -1; 681310181ecSSara Sharon 682310181ecSSara Sharon lockdep_assert_held(&mvm->mutex); 683310181ecSSara Sharon 684310181ecSSara Sharon IWL_DEBUG_TX_QUEUES(mvm, 685310181ecSSara Sharon "Allocating queue for sta %d on tid %d\n", 686310181ecSSara Sharon mvmsta->sta_id, tid); 687310181ecSSara Sharon queue = iwl_mvm_tvqm_enable_txq(mvm, mac_queue, mvmsta->sta_id, tid, 688310181ecSSara Sharon wdg_timeout); 689310181ecSSara Sharon if (queue < 0) 690310181ecSSara Sharon return queue; 691310181ecSSara Sharon 692310181ecSSara Sharon IWL_DEBUG_TX_QUEUES(mvm, "Allocated queue is %d\n", queue); 693310181ecSSara Sharon 694310181ecSSara Sharon spin_lock_bh(&mvmsta->lock); 695310181ecSSara Sharon mvmsta->tid_data[tid].txq_id = queue; 696310181ecSSara Sharon mvmsta->tid_data[tid].is_tid_active = true; 697310181ecSSara Sharon spin_unlock_bh(&mvmsta->lock); 698310181ecSSara Sharon 699310181ecSSara Sharon return 0; 700310181ecSSara Sharon } 701310181ecSSara Sharon 70224afba76SLiad Kaufman static int iwl_mvm_sta_alloc_queue(struct iwl_mvm *mvm, 70324afba76SLiad Kaufman struct ieee80211_sta *sta, u8 ac, int tid, 70424afba76SLiad Kaufman struct ieee80211_hdr *hdr) 70524afba76SLiad Kaufman { 70624afba76SLiad Kaufman struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta); 70724afba76SLiad Kaufman struct iwl_trans_txq_scd_cfg cfg = { 708cf6c6ea3SEmmanuel Grumbach .fifo = iwl_mvm_mac_ac_to_tx_fifo(mvm, ac), 70924afba76SLiad Kaufman .sta_id = mvmsta->sta_id, 71024afba76SLiad Kaufman .tid = tid, 71124afba76SLiad Kaufman .frame_limit = IWL_FRAME_LIMIT, 71224afba76SLiad Kaufman }; 71324afba76SLiad Kaufman unsigned int wdg_timeout = 71424afba76SLiad Kaufman iwl_mvm_get_wd_timeout(mvm, mvmsta->vif, false, false); 71524afba76SLiad Kaufman u8 mac_queue = mvmsta->vif->hw_queue[ac]; 71624afba76SLiad Kaufman int queue = -1; 71701796ff2SSara Sharon bool using_inactive_queue = false, same_sta = false; 7189794c64fSLiad Kaufman unsigned long disable_agg_tids = 0; 7199794c64fSLiad Kaufman enum iwl_mvm_agg_state queue_state; 720dcfbd67bSEmmanuel Grumbach bool shared_queue = false, inc_ssn; 72124afba76SLiad Kaufman int ssn; 72242db09c1SLiad Kaufman unsigned long tfd_queue_mask; 723cf961e16SLiad Kaufman int ret; 72424afba76SLiad Kaufman 72524afba76SLiad Kaufman lockdep_assert_held(&mvm->mutex); 72624afba76SLiad Kaufman 727310181ecSSara Sharon if (iwl_mvm_has_new_tx_api(mvm)) 728310181ecSSara Sharon return iwl_mvm_sta_alloc_queue_tvqm(mvm, sta, ac, tid); 729310181ecSSara Sharon 73042db09c1SLiad Kaufman spin_lock_bh(&mvmsta->lock); 73142db09c1SLiad Kaufman tfd_queue_mask = mvmsta->tfd_queue_msk; 73242db09c1SLiad Kaufman spin_unlock_bh(&mvmsta->lock); 73342db09c1SLiad Kaufman 734d2515a99SLiad Kaufman spin_lock_bh(&mvm->queue_info_lock); 73524afba76SLiad Kaufman 73624afba76SLiad Kaufman /* 73724afba76SLiad Kaufman * Non-QoS, QoS NDP and MGMT frames should go to a MGMT queue, if one 73824afba76SLiad Kaufman * exists 73924afba76SLiad Kaufman */ 74024afba76SLiad Kaufman if (!ieee80211_is_data_qos(hdr->frame_control) || 74124afba76SLiad Kaufman ieee80211_is_qos_nullfunc(hdr->frame_control)) { 7429794c64fSLiad Kaufman queue = iwl_mvm_find_free_queue(mvm, mvmsta->sta_id, 7439794c64fSLiad Kaufman IWL_MVM_DQA_MIN_MGMT_QUEUE, 74424afba76SLiad Kaufman IWL_MVM_DQA_MAX_MGMT_QUEUE); 74524afba76SLiad Kaufman if (queue >= IWL_MVM_DQA_MIN_MGMT_QUEUE) 74624afba76SLiad Kaufman IWL_DEBUG_TX_QUEUES(mvm, "Found free MGMT queue #%d\n", 74724afba76SLiad Kaufman queue); 74824afba76SLiad Kaufman 74924afba76SLiad Kaufman /* If no such queue is found, we'll use a DATA queue instead */ 75024afba76SLiad Kaufman } 75124afba76SLiad Kaufman 7529794c64fSLiad Kaufman if ((queue < 0 && mvmsta->reserved_queue != IEEE80211_INVAL_HW_QUEUE) && 7539794c64fSLiad Kaufman (mvm->queue_info[mvmsta->reserved_queue].status == 7549794c64fSLiad Kaufman IWL_MVM_QUEUE_RESERVED || 7559794c64fSLiad Kaufman mvm->queue_info[mvmsta->reserved_queue].status == 7569794c64fSLiad Kaufman IWL_MVM_QUEUE_INACTIVE)) { 75724afba76SLiad Kaufman queue = mvmsta->reserved_queue; 7589794c64fSLiad Kaufman mvm->queue_info[queue].reserved = true; 75924afba76SLiad Kaufman IWL_DEBUG_TX_QUEUES(mvm, "Using reserved queue #%d\n", queue); 76024afba76SLiad Kaufman } 76124afba76SLiad Kaufman 76224afba76SLiad Kaufman if (queue < 0) 7639794c64fSLiad Kaufman queue = iwl_mvm_find_free_queue(mvm, mvmsta->sta_id, 7649794c64fSLiad Kaufman IWL_MVM_DQA_MIN_DATA_QUEUE, 76524afba76SLiad Kaufman IWL_MVM_DQA_MAX_DATA_QUEUE); 766cf961e16SLiad Kaufman 767cf961e16SLiad Kaufman /* 7689794c64fSLiad Kaufman * Check if this queue is already allocated but inactive. 7699794c64fSLiad Kaufman * In such a case, we'll need to first free this queue before enabling 7709794c64fSLiad Kaufman * it again, so we'll mark it as reserved to make sure no new traffic 7719794c64fSLiad Kaufman * arrives on it 7729794c64fSLiad Kaufman */ 7739794c64fSLiad Kaufman if (queue > 0 && 7749794c64fSLiad Kaufman mvm->queue_info[queue].status == IWL_MVM_QUEUE_INACTIVE) { 7759794c64fSLiad Kaufman mvm->queue_info[queue].status = IWL_MVM_QUEUE_RESERVED; 7769794c64fSLiad Kaufman using_inactive_queue = true; 77701796ff2SSara Sharon same_sta = mvm->queue_info[queue].ra_sta_id == mvmsta->sta_id; 7789794c64fSLiad Kaufman IWL_DEBUG_TX_QUEUES(mvm, 7799794c64fSLiad Kaufman "Re-assigning TXQ %d: sta_id=%d, tid=%d\n", 7809794c64fSLiad Kaufman queue, mvmsta->sta_id, tid); 7819794c64fSLiad Kaufman } 7829794c64fSLiad Kaufman 78342db09c1SLiad Kaufman /* No free queue - we'll have to share */ 78442db09c1SLiad Kaufman if (queue <= 0) { 78542db09c1SLiad Kaufman queue = iwl_mvm_get_shared_queue(mvm, tfd_queue_mask, ac); 78642db09c1SLiad Kaufman if (queue > 0) { 78742db09c1SLiad Kaufman shared_queue = true; 78842db09c1SLiad Kaufman mvm->queue_info[queue].status = IWL_MVM_QUEUE_SHARED; 78942db09c1SLiad Kaufman } 79042db09c1SLiad Kaufman } 79142db09c1SLiad Kaufman 7929794c64fSLiad Kaufman /* 793cf961e16SLiad Kaufman * Mark TXQ as ready, even though it hasn't been fully configured yet, 794cf961e16SLiad Kaufman * to make sure no one else takes it. 795cf961e16SLiad Kaufman * This will allow avoiding re-acquiring the lock at the end of the 796cf961e16SLiad Kaufman * configuration. On error we'll mark it back as free. 797cf961e16SLiad Kaufman */ 79842db09c1SLiad Kaufman if ((queue > 0) && !shared_queue) 799cf961e16SLiad Kaufman mvm->queue_info[queue].status = IWL_MVM_QUEUE_READY; 80024afba76SLiad Kaufman 801d2515a99SLiad Kaufman spin_unlock_bh(&mvm->queue_info_lock); 80224afba76SLiad Kaufman 80342db09c1SLiad Kaufman /* This shouldn't happen - out of queues */ 80442db09c1SLiad Kaufman if (WARN_ON(queue <= 0)) { 80542db09c1SLiad Kaufman IWL_ERR(mvm, "No available queues for tid %d on sta_id %d\n", 80642db09c1SLiad Kaufman tid, cfg.sta_id); 8079f9af3d7SLiad Kaufman return queue; 80842db09c1SLiad Kaufman } 80924afba76SLiad Kaufman 81024afba76SLiad Kaufman /* 81124afba76SLiad Kaufman * Actual en/disablement of aggregations is through the ADD_STA HCMD, 81224afba76SLiad Kaufman * but for configuring the SCD to send A-MPDUs we need to mark the queue 81324afba76SLiad Kaufman * as aggregatable. 81424afba76SLiad Kaufman * Mark all DATA queues as allowing to be aggregated at some point 81524afba76SLiad Kaufman */ 816d5216a28SLiad Kaufman cfg.aggregate = (queue >= IWL_MVM_DQA_MIN_DATA_QUEUE || 817d5216a28SLiad Kaufman queue == IWL_MVM_DQA_BSS_CLIENT_QUEUE); 81824afba76SLiad Kaufman 8199794c64fSLiad Kaufman /* 8209794c64fSLiad Kaufman * If this queue was previously inactive (idle) - we need to free it 8219794c64fSLiad Kaufman * first 8229794c64fSLiad Kaufman */ 8239794c64fSLiad Kaufman if (using_inactive_queue) { 82401796ff2SSara Sharon ret = iwl_mvm_free_inactive_queue(mvm, queue, same_sta); 82501796ff2SSara Sharon if (ret) 8269794c64fSLiad Kaufman return ret; 8279794c64fSLiad Kaufman } 8288d98ae6eSLiad Kaufman 82942db09c1SLiad Kaufman IWL_DEBUG_TX_QUEUES(mvm, 83042db09c1SLiad Kaufman "Allocating %squeue #%d to sta %d on tid %d\n", 83142db09c1SLiad Kaufman shared_queue ? "shared " : "", queue, 83242db09c1SLiad Kaufman mvmsta->sta_id, tid); 83342db09c1SLiad Kaufman 83442db09c1SLiad Kaufman if (shared_queue) { 83542db09c1SLiad Kaufman /* Disable any open aggs on this queue */ 83642db09c1SLiad Kaufman disable_agg_tids = iwl_mvm_get_queue_agg_tids(mvm, queue); 83742db09c1SLiad Kaufman 83842db09c1SLiad Kaufman if (disable_agg_tids) { 83942db09c1SLiad Kaufman IWL_DEBUG_TX_QUEUES(mvm, "Disabling aggs on queue %d\n", 84042db09c1SLiad Kaufman queue); 84142db09c1SLiad Kaufman iwl_mvm_invalidate_sta_queue(mvm, queue, 84242db09c1SLiad Kaufman disable_agg_tids, false); 84342db09c1SLiad Kaufman } 84442db09c1SLiad Kaufman } 84524afba76SLiad Kaufman 84624afba76SLiad Kaufman ssn = IEEE80211_SEQ_TO_SN(le16_to_cpu(hdr->seq_ctrl)); 847dcfbd67bSEmmanuel Grumbach inc_ssn = iwl_mvm_enable_txq(mvm, queue, mac_queue, 848dcfbd67bSEmmanuel Grumbach ssn, &cfg, wdg_timeout); 849dcfbd67bSEmmanuel Grumbach if (inc_ssn) { 850dcfbd67bSEmmanuel Grumbach ssn = (ssn + 1) & IEEE80211_SCTL_SEQ; 851dcfbd67bSEmmanuel Grumbach le16_add_cpu(&hdr->seq_ctrl, 0x10); 852dcfbd67bSEmmanuel Grumbach } 85324afba76SLiad Kaufman 85458f2cc57SLiad Kaufman /* 85558f2cc57SLiad Kaufman * Mark queue as shared in transport if shared 85658f2cc57SLiad Kaufman * Note this has to be done after queue enablement because enablement 85758f2cc57SLiad Kaufman * can also set this value, and there is no indication there to shared 85858f2cc57SLiad Kaufman * queues 85958f2cc57SLiad Kaufman */ 86058f2cc57SLiad Kaufman if (shared_queue) 86158f2cc57SLiad Kaufman iwl_trans_txq_set_shared_mode(mvm->trans, queue, true); 86258f2cc57SLiad Kaufman 86324afba76SLiad Kaufman spin_lock_bh(&mvmsta->lock); 864dcfbd67bSEmmanuel Grumbach /* 865dcfbd67bSEmmanuel Grumbach * This looks racy, but it is not. We have only one packet for 866dcfbd67bSEmmanuel Grumbach * this ra/tid in our Tx path since we stop the Qdisc when we 867dcfbd67bSEmmanuel Grumbach * need to allocate a new TFD queue. 868dcfbd67bSEmmanuel Grumbach */ 869dcfbd67bSEmmanuel Grumbach if (inc_ssn) 870dcfbd67bSEmmanuel Grumbach mvmsta->tid_data[tid].seq_number += 0x10; 87124afba76SLiad Kaufman mvmsta->tid_data[tid].txq_id = queue; 8729794c64fSLiad Kaufman mvmsta->tid_data[tid].is_tid_active = true; 87324afba76SLiad Kaufman mvmsta->tfd_queue_msk |= BIT(queue); 8749794c64fSLiad Kaufman queue_state = mvmsta->tid_data[tid].state; 87524afba76SLiad Kaufman 87624afba76SLiad Kaufman if (mvmsta->reserved_queue == queue) 87724afba76SLiad Kaufman mvmsta->reserved_queue = IEEE80211_INVAL_HW_QUEUE; 87824afba76SLiad Kaufman spin_unlock_bh(&mvmsta->lock); 87924afba76SLiad Kaufman 88042db09c1SLiad Kaufman if (!shared_queue) { 881cf961e16SLiad Kaufman ret = iwl_mvm_sta_send_to_fw(mvm, sta, true, STA_MODIFY_QUEUES); 882cf961e16SLiad Kaufman if (ret) 883cf961e16SLiad Kaufman goto out_err; 884cf961e16SLiad Kaufman 8859794c64fSLiad Kaufman /* If we need to re-enable aggregations... */ 88642db09c1SLiad Kaufman if (queue_state == IWL_AGG_ON) { 8879794c64fSLiad Kaufman ret = iwl_mvm_sta_tx_agg(mvm, sta, tid, queue, true); 88842db09c1SLiad Kaufman if (ret) 88942db09c1SLiad Kaufman goto out_err; 89042db09c1SLiad Kaufman } 89158f2cc57SLiad Kaufman } else { 89258f2cc57SLiad Kaufman /* Redirect queue, if needed */ 89358f2cc57SLiad Kaufman ret = iwl_mvm_scd_queue_redirect(mvm, queue, tid, ac, ssn, 89458f2cc57SLiad Kaufman wdg_timeout, false); 89558f2cc57SLiad Kaufman if (ret) 89658f2cc57SLiad Kaufman goto out_err; 89742db09c1SLiad Kaufman } 8989794c64fSLiad Kaufman 89942db09c1SLiad Kaufman return 0; 900cf961e16SLiad Kaufman 901cf961e16SLiad Kaufman out_err: 902cf961e16SLiad Kaufman iwl_mvm_disable_txq(mvm, queue, mac_queue, tid, 0); 903cf961e16SLiad Kaufman 904cf961e16SLiad Kaufman return ret; 90524afba76SLiad Kaufman } 90624afba76SLiad Kaufman 90719aefa45SLiad Kaufman static void iwl_mvm_change_queue_owner(struct iwl_mvm *mvm, int queue) 90819aefa45SLiad Kaufman { 90919aefa45SLiad Kaufman struct iwl_scd_txq_cfg_cmd cmd = { 91019aefa45SLiad Kaufman .scd_queue = queue, 91119aefa45SLiad Kaufman .action = SCD_CFG_UPDATE_QUEUE_TID, 91219aefa45SLiad Kaufman }; 91319aefa45SLiad Kaufman int tid; 91419aefa45SLiad Kaufman unsigned long tid_bitmap; 91519aefa45SLiad Kaufman int ret; 91619aefa45SLiad Kaufman 91719aefa45SLiad Kaufman lockdep_assert_held(&mvm->mutex); 91819aefa45SLiad Kaufman 919bb49701bSSara Sharon if (WARN_ON(iwl_mvm_has_new_tx_api(mvm))) 920bb49701bSSara Sharon return; 921bb49701bSSara Sharon 92219aefa45SLiad Kaufman spin_lock_bh(&mvm->queue_info_lock); 92319aefa45SLiad Kaufman tid_bitmap = mvm->queue_info[queue].tid_bitmap; 92419aefa45SLiad Kaufman spin_unlock_bh(&mvm->queue_info_lock); 92519aefa45SLiad Kaufman 92619aefa45SLiad Kaufman if (WARN(!tid_bitmap, "TXQ %d has no tids assigned to it\n", queue)) 92719aefa45SLiad Kaufman return; 92819aefa45SLiad Kaufman 92919aefa45SLiad Kaufman /* Find any TID for queue */ 93019aefa45SLiad Kaufman tid = find_first_bit(&tid_bitmap, IWL_MAX_TID_COUNT + 1); 93119aefa45SLiad Kaufman cmd.tid = tid; 93219aefa45SLiad Kaufman cmd.tx_fifo = iwl_mvm_ac_to_tx_fifo[tid_to_mac80211_ac[tid]]; 93319aefa45SLiad Kaufman 93419aefa45SLiad Kaufman ret = iwl_mvm_send_cmd_pdu(mvm, SCD_QUEUE_CFG, 0, sizeof(cmd), &cmd); 935341ca402SLiad Kaufman if (ret) { 93619aefa45SLiad Kaufman IWL_ERR(mvm, "Failed to update owner of TXQ %d (ret=%d)\n", 93719aefa45SLiad Kaufman queue, ret); 938341ca402SLiad Kaufman return; 939341ca402SLiad Kaufman } 940341ca402SLiad Kaufman 941341ca402SLiad Kaufman spin_lock_bh(&mvm->queue_info_lock); 942341ca402SLiad Kaufman mvm->queue_info[queue].txq_tid = tid; 943341ca402SLiad Kaufman spin_unlock_bh(&mvm->queue_info_lock); 94419aefa45SLiad Kaufman IWL_DEBUG_TX_QUEUES(mvm, "Changed TXQ %d ownership to tid %d\n", 94519aefa45SLiad Kaufman queue, tid); 94619aefa45SLiad Kaufman } 94719aefa45SLiad Kaufman 9489f9af3d7SLiad Kaufman static void iwl_mvm_unshare_queue(struct iwl_mvm *mvm, int queue) 9499f9af3d7SLiad Kaufman { 9509f9af3d7SLiad Kaufman struct ieee80211_sta *sta; 9519f9af3d7SLiad Kaufman struct iwl_mvm_sta *mvmsta; 952806911daSSharon Dvir u8 sta_id; 9539f9af3d7SLiad Kaufman int tid = -1; 9549f9af3d7SLiad Kaufman unsigned long tid_bitmap; 9559f9af3d7SLiad Kaufman unsigned int wdg_timeout; 9569f9af3d7SLiad Kaufman int ssn; 9579f9af3d7SLiad Kaufman int ret = true; 9589f9af3d7SLiad Kaufman 959bb49701bSSara Sharon /* queue sharing is disabled on new TX path */ 960bb49701bSSara Sharon if (WARN_ON(iwl_mvm_has_new_tx_api(mvm))) 961bb49701bSSara Sharon return; 962bb49701bSSara Sharon 9639f9af3d7SLiad Kaufman lockdep_assert_held(&mvm->mutex); 9649f9af3d7SLiad Kaufman 9659f9af3d7SLiad Kaufman spin_lock_bh(&mvm->queue_info_lock); 9669f9af3d7SLiad Kaufman sta_id = mvm->queue_info[queue].ra_sta_id; 9679f9af3d7SLiad Kaufman tid_bitmap = mvm->queue_info[queue].tid_bitmap; 9689f9af3d7SLiad Kaufman spin_unlock_bh(&mvm->queue_info_lock); 9699f9af3d7SLiad Kaufman 9709f9af3d7SLiad Kaufman /* Find TID for queue, and make sure it is the only one on the queue */ 9719f9af3d7SLiad Kaufman tid = find_first_bit(&tid_bitmap, IWL_MAX_TID_COUNT + 1); 9729f9af3d7SLiad Kaufman if (tid_bitmap != BIT(tid)) { 9739f9af3d7SLiad Kaufman IWL_ERR(mvm, "Failed to unshare q %d, active tids=0x%lx\n", 9749f9af3d7SLiad Kaufman queue, tid_bitmap); 9759f9af3d7SLiad Kaufman return; 9769f9af3d7SLiad Kaufman } 9779f9af3d7SLiad Kaufman 9789f9af3d7SLiad Kaufman IWL_DEBUG_TX_QUEUES(mvm, "Unsharing TXQ %d, keeping tid %d\n", queue, 9799f9af3d7SLiad Kaufman tid); 9809f9af3d7SLiad Kaufman 9819f9af3d7SLiad Kaufman sta = rcu_dereference_protected(mvm->fw_id_to_mac_id[sta_id], 9829f9af3d7SLiad Kaufman lockdep_is_held(&mvm->mutex)); 9839f9af3d7SLiad Kaufman 9849f9af3d7SLiad Kaufman if (WARN_ON_ONCE(IS_ERR_OR_NULL(sta))) 9859f9af3d7SLiad Kaufman return; 9869f9af3d7SLiad Kaufman 9879f9af3d7SLiad Kaufman mvmsta = iwl_mvm_sta_from_mac80211(sta); 9889f9af3d7SLiad Kaufman wdg_timeout = iwl_mvm_get_wd_timeout(mvm, mvmsta->vif, false, false); 9899f9af3d7SLiad Kaufman 9909f9af3d7SLiad Kaufman ssn = IEEE80211_SEQ_TO_SN(mvmsta->tid_data[tid].seq_number); 9919f9af3d7SLiad Kaufman 9929f9af3d7SLiad Kaufman ret = iwl_mvm_scd_queue_redirect(mvm, queue, tid, 9939f9af3d7SLiad Kaufman tid_to_mac80211_ac[tid], ssn, 9949f9af3d7SLiad Kaufman wdg_timeout, true); 9959f9af3d7SLiad Kaufman if (ret) { 9969f9af3d7SLiad Kaufman IWL_ERR(mvm, "Failed to redirect TXQ %d\n", queue); 9979f9af3d7SLiad Kaufman return; 9989f9af3d7SLiad Kaufman } 9999f9af3d7SLiad Kaufman 10009f9af3d7SLiad Kaufman /* If aggs should be turned back on - do it */ 10019f9af3d7SLiad Kaufman if (mvmsta->tid_data[tid].state == IWL_AGG_ON) { 10029cd70e80SEmmanuel Grumbach struct iwl_mvm_add_sta_cmd cmd = {0}; 10039f9af3d7SLiad Kaufman 10049f9af3d7SLiad Kaufman mvmsta->tid_disable_agg &= ~BIT(tid); 10059f9af3d7SLiad Kaufman 10069f9af3d7SLiad Kaufman cmd.mac_id_n_color = cpu_to_le32(mvmsta->mac_id_n_color); 10079f9af3d7SLiad Kaufman cmd.sta_id = mvmsta->sta_id; 10089f9af3d7SLiad Kaufman cmd.add_modify = STA_MODE_MODIFY; 10099f9af3d7SLiad Kaufman cmd.modify_mask = STA_MODIFY_TID_DISABLE_TX; 10109f9af3d7SLiad Kaufman cmd.tfd_queue_msk = cpu_to_le32(mvmsta->tfd_queue_msk); 10119f9af3d7SLiad Kaufman cmd.tid_disable_tx = cpu_to_le16(mvmsta->tid_disable_agg); 10129f9af3d7SLiad Kaufman 10139f9af3d7SLiad Kaufman ret = iwl_mvm_send_cmd_pdu(mvm, ADD_STA, CMD_ASYNC, 10149f9af3d7SLiad Kaufman iwl_mvm_add_sta_cmd_size(mvm), &cmd); 10159f9af3d7SLiad Kaufman if (!ret) { 10169f9af3d7SLiad Kaufman IWL_DEBUG_TX_QUEUES(mvm, 10179f9af3d7SLiad Kaufman "TXQ #%d is now aggregated again\n", 10189f9af3d7SLiad Kaufman queue); 10199f9af3d7SLiad Kaufman 10209f9af3d7SLiad Kaufman /* Mark queue intenally as aggregating again */ 10219f9af3d7SLiad Kaufman iwl_trans_txq_set_shared_mode(mvm->trans, queue, false); 10229f9af3d7SLiad Kaufman } 10239f9af3d7SLiad Kaufman } 10249f9af3d7SLiad Kaufman 10259f9af3d7SLiad Kaufman spin_lock_bh(&mvm->queue_info_lock); 10269f9af3d7SLiad Kaufman mvm->queue_info[queue].status = IWL_MVM_QUEUE_READY; 10279f9af3d7SLiad Kaufman spin_unlock_bh(&mvm->queue_info_lock); 10289f9af3d7SLiad Kaufman } 10299f9af3d7SLiad Kaufman 103024afba76SLiad Kaufman static inline u8 iwl_mvm_tid_to_ac_queue(int tid) 103124afba76SLiad Kaufman { 103224afba76SLiad Kaufman if (tid == IWL_MAX_TID_COUNT) 103324afba76SLiad Kaufman return IEEE80211_AC_VO; /* MGMT */ 103424afba76SLiad Kaufman 103524afba76SLiad Kaufman return tid_to_mac80211_ac[tid]; 103624afba76SLiad Kaufman } 103724afba76SLiad Kaufman 103824afba76SLiad Kaufman static void iwl_mvm_tx_deferred_stream(struct iwl_mvm *mvm, 103924afba76SLiad Kaufman struct ieee80211_sta *sta, int tid) 104024afba76SLiad Kaufman { 104124afba76SLiad Kaufman struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta); 104224afba76SLiad Kaufman struct iwl_mvm_tid_data *tid_data = &mvmsta->tid_data[tid]; 104324afba76SLiad Kaufman struct sk_buff *skb; 104424afba76SLiad Kaufman struct ieee80211_hdr *hdr; 104524afba76SLiad Kaufman struct sk_buff_head deferred_tx; 104624afba76SLiad Kaufman u8 mac_queue; 104724afba76SLiad Kaufman bool no_queue = false; /* Marks if there is a problem with the queue */ 104824afba76SLiad Kaufman u8 ac; 104924afba76SLiad Kaufman 105024afba76SLiad Kaufman lockdep_assert_held(&mvm->mutex); 105124afba76SLiad Kaufman 105224afba76SLiad Kaufman skb = skb_peek(&tid_data->deferred_tx_frames); 105324afba76SLiad Kaufman if (!skb) 105424afba76SLiad Kaufman return; 105524afba76SLiad Kaufman hdr = (void *)skb->data; 105624afba76SLiad Kaufman 105724afba76SLiad Kaufman ac = iwl_mvm_tid_to_ac_queue(tid); 105824afba76SLiad Kaufman mac_queue = IEEE80211_SKB_CB(skb)->hw_queue; 105924afba76SLiad Kaufman 10606862fceeSSara Sharon if (tid_data->txq_id == IWL_MVM_INVALID_QUEUE && 106124afba76SLiad Kaufman iwl_mvm_sta_alloc_queue(mvm, sta, ac, tid, hdr)) { 106224afba76SLiad Kaufman IWL_ERR(mvm, 106324afba76SLiad Kaufman "Can't alloc TXQ for sta %d tid %d - dropping frame\n", 106424afba76SLiad Kaufman mvmsta->sta_id, tid); 106524afba76SLiad Kaufman 106624afba76SLiad Kaufman /* 106724afba76SLiad Kaufman * Mark queue as problematic so later the deferred traffic is 106824afba76SLiad Kaufman * freed, as we can do nothing with it 106924afba76SLiad Kaufman */ 107024afba76SLiad Kaufman no_queue = true; 107124afba76SLiad Kaufman } 107224afba76SLiad Kaufman 107324afba76SLiad Kaufman __skb_queue_head_init(&deferred_tx); 107424afba76SLiad Kaufman 1075d2515a99SLiad Kaufman /* Disable bottom-halves when entering TX path */ 1076d2515a99SLiad Kaufman local_bh_disable(); 107724afba76SLiad Kaufman spin_lock(&mvmsta->lock); 107824afba76SLiad Kaufman skb_queue_splice_init(&tid_data->deferred_tx_frames, &deferred_tx); 1079ad5de737SLiad Kaufman mvmsta->deferred_traffic_tid_map &= ~BIT(tid); 108024afba76SLiad Kaufman spin_unlock(&mvmsta->lock); 108124afba76SLiad Kaufman 108224afba76SLiad Kaufman while ((skb = __skb_dequeue(&deferred_tx))) 108324afba76SLiad Kaufman if (no_queue || iwl_mvm_tx_skb(mvm, skb, sta)) 108424afba76SLiad Kaufman ieee80211_free_txskb(mvm->hw, skb); 108524afba76SLiad Kaufman local_bh_enable(); 108624afba76SLiad Kaufman 108724afba76SLiad Kaufman /* Wake queue */ 108824afba76SLiad Kaufman iwl_mvm_start_mac_queues(mvm, BIT(mac_queue)); 108924afba76SLiad Kaufman } 109024afba76SLiad Kaufman 109124afba76SLiad Kaufman void iwl_mvm_add_new_dqa_stream_wk(struct work_struct *wk) 109224afba76SLiad Kaufman { 109324afba76SLiad Kaufman struct iwl_mvm *mvm = container_of(wk, struct iwl_mvm, 109424afba76SLiad Kaufman add_stream_wk); 109524afba76SLiad Kaufman struct ieee80211_sta *sta; 109624afba76SLiad Kaufman struct iwl_mvm_sta *mvmsta; 109724afba76SLiad Kaufman unsigned long deferred_tid_traffic; 10989f9af3d7SLiad Kaufman int queue, sta_id, tid; 109924afba76SLiad Kaufman 11009794c64fSLiad Kaufman /* Check inactivity of queues */ 11019794c64fSLiad Kaufman iwl_mvm_inactivity_check(mvm); 11029794c64fSLiad Kaufman 110324afba76SLiad Kaufman mutex_lock(&mvm->mutex); 110424afba76SLiad Kaufman 110534e10860SSara Sharon /* No queue reconfiguration in TVQM mode */ 110634e10860SSara Sharon if (iwl_mvm_has_new_tx_api(mvm)) 110734e10860SSara Sharon goto alloc_queues; 110834e10860SSara Sharon 11099f9af3d7SLiad Kaufman /* Reconfigure queues requiring reconfiguation */ 111034e10860SSara Sharon for (queue = 0; queue < ARRAY_SIZE(mvm->queue_info); queue++) { 11119f9af3d7SLiad Kaufman bool reconfig; 111219aefa45SLiad Kaufman bool change_owner; 11139f9af3d7SLiad Kaufman 11149f9af3d7SLiad Kaufman spin_lock_bh(&mvm->queue_info_lock); 11159f9af3d7SLiad Kaufman reconfig = (mvm->queue_info[queue].status == 11169f9af3d7SLiad Kaufman IWL_MVM_QUEUE_RECONFIGURING); 111719aefa45SLiad Kaufman 111819aefa45SLiad Kaufman /* 111919aefa45SLiad Kaufman * We need to take into account a situation in which a TXQ was 112019aefa45SLiad Kaufman * allocated to TID x, and then turned shared by adding TIDs y 112119aefa45SLiad Kaufman * and z. If TID x becomes inactive and is removed from the TXQ, 112219aefa45SLiad Kaufman * ownership must be given to one of the remaining TIDs. 112319aefa45SLiad Kaufman * This is mainly because if TID x continues - a new queue can't 112419aefa45SLiad Kaufman * be allocated for it as long as it is an owner of another TXQ. 112519aefa45SLiad Kaufman */ 112619aefa45SLiad Kaufman change_owner = !(mvm->queue_info[queue].tid_bitmap & 112719aefa45SLiad Kaufman BIT(mvm->queue_info[queue].txq_tid)) && 112819aefa45SLiad Kaufman (mvm->queue_info[queue].status == 112919aefa45SLiad Kaufman IWL_MVM_QUEUE_SHARED); 11309f9af3d7SLiad Kaufman spin_unlock_bh(&mvm->queue_info_lock); 11319f9af3d7SLiad Kaufman 11329f9af3d7SLiad Kaufman if (reconfig) 11339f9af3d7SLiad Kaufman iwl_mvm_unshare_queue(mvm, queue); 113419aefa45SLiad Kaufman else if (change_owner) 113519aefa45SLiad Kaufman iwl_mvm_change_queue_owner(mvm, queue); 11369f9af3d7SLiad Kaufman } 11379f9af3d7SLiad Kaufman 113834e10860SSara Sharon alloc_queues: 113924afba76SLiad Kaufman /* Go over all stations with deferred traffic */ 114024afba76SLiad Kaufman for_each_set_bit(sta_id, mvm->sta_deferred_frames, 114124afba76SLiad Kaufman IWL_MVM_STATION_COUNT) { 114224afba76SLiad Kaufman clear_bit(sta_id, mvm->sta_deferred_frames); 114324afba76SLiad Kaufman sta = rcu_dereference_protected(mvm->fw_id_to_mac_id[sta_id], 114424afba76SLiad Kaufman lockdep_is_held(&mvm->mutex)); 114524afba76SLiad Kaufman if (IS_ERR_OR_NULL(sta)) 114624afba76SLiad Kaufman continue; 114724afba76SLiad Kaufman 114824afba76SLiad Kaufman mvmsta = iwl_mvm_sta_from_mac80211(sta); 114924afba76SLiad Kaufman deferred_tid_traffic = mvmsta->deferred_traffic_tid_map; 115024afba76SLiad Kaufman 115124afba76SLiad Kaufman for_each_set_bit(tid, &deferred_tid_traffic, 115224afba76SLiad Kaufman IWL_MAX_TID_COUNT + 1) 115324afba76SLiad Kaufman iwl_mvm_tx_deferred_stream(mvm, sta, tid); 115424afba76SLiad Kaufman } 115524afba76SLiad Kaufman 115624afba76SLiad Kaufman mutex_unlock(&mvm->mutex); 115724afba76SLiad Kaufman } 115824afba76SLiad Kaufman 115924afba76SLiad Kaufman static int iwl_mvm_reserve_sta_stream(struct iwl_mvm *mvm, 1160d5216a28SLiad Kaufman struct ieee80211_sta *sta, 1161d5216a28SLiad Kaufman enum nl80211_iftype vif_type) 116224afba76SLiad Kaufman { 116324afba76SLiad Kaufman struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta); 116424afba76SLiad Kaufman int queue; 116501796ff2SSara Sharon bool using_inactive_queue = false, same_sta = false; 116624afba76SLiad Kaufman 1167396952eeSSara Sharon /* queue reserving is disabled on new TX path */ 1168396952eeSSara Sharon if (WARN_ON(iwl_mvm_has_new_tx_api(mvm))) 1169396952eeSSara Sharon return 0; 1170396952eeSSara Sharon 11719794c64fSLiad Kaufman /* 11729794c64fSLiad Kaufman * Check for inactive queues, so we don't reach a situation where we 11739794c64fSLiad Kaufman * can't add a STA due to a shortage in queues that doesn't really exist 11749794c64fSLiad Kaufman */ 11759794c64fSLiad Kaufman iwl_mvm_inactivity_check(mvm); 11769794c64fSLiad Kaufman 117724afba76SLiad Kaufman spin_lock_bh(&mvm->queue_info_lock); 117824afba76SLiad Kaufman 117924afba76SLiad Kaufman /* Make sure we have free resources for this STA */ 1180d5216a28SLiad Kaufman if (vif_type == NL80211_IFTYPE_STATION && !sta->tdls && 1181d5216a28SLiad Kaufman !mvm->queue_info[IWL_MVM_DQA_BSS_CLIENT_QUEUE].hw_queue_refcount && 1182cf961e16SLiad Kaufman (mvm->queue_info[IWL_MVM_DQA_BSS_CLIENT_QUEUE].status == 1183cf961e16SLiad Kaufman IWL_MVM_QUEUE_FREE)) 1184d5216a28SLiad Kaufman queue = IWL_MVM_DQA_BSS_CLIENT_QUEUE; 1185d5216a28SLiad Kaufman else 11869794c64fSLiad Kaufman queue = iwl_mvm_find_free_queue(mvm, mvmsta->sta_id, 11879794c64fSLiad Kaufman IWL_MVM_DQA_MIN_DATA_QUEUE, 118824afba76SLiad Kaufman IWL_MVM_DQA_MAX_DATA_QUEUE); 118924afba76SLiad Kaufman if (queue < 0) { 119024afba76SLiad Kaufman spin_unlock_bh(&mvm->queue_info_lock); 119124afba76SLiad Kaufman IWL_ERR(mvm, "No available queues for new station\n"); 119224afba76SLiad Kaufman return -ENOSPC; 119301796ff2SSara Sharon } else if (mvm->queue_info[queue].status == IWL_MVM_QUEUE_INACTIVE) { 119401796ff2SSara Sharon /* 119501796ff2SSara Sharon * If this queue is already allocated but inactive we'll need to 119601796ff2SSara Sharon * first free this queue before enabling it again, we'll mark 119701796ff2SSara Sharon * it as reserved to make sure no new traffic arrives on it 119801796ff2SSara Sharon */ 119901796ff2SSara Sharon using_inactive_queue = true; 120001796ff2SSara Sharon same_sta = mvm->queue_info[queue].ra_sta_id == mvmsta->sta_id; 120124afba76SLiad Kaufman } 1202cf961e16SLiad Kaufman mvm->queue_info[queue].status = IWL_MVM_QUEUE_RESERVED; 120324afba76SLiad Kaufman 120424afba76SLiad Kaufman spin_unlock_bh(&mvm->queue_info_lock); 120524afba76SLiad Kaufman 120624afba76SLiad Kaufman mvmsta->reserved_queue = queue; 120724afba76SLiad Kaufman 120801796ff2SSara Sharon if (using_inactive_queue) 120901796ff2SSara Sharon iwl_mvm_free_inactive_queue(mvm, queue, same_sta); 121001796ff2SSara Sharon 121124afba76SLiad Kaufman IWL_DEBUG_TX_QUEUES(mvm, "Reserving data queue #%d for sta_id %d\n", 121224afba76SLiad Kaufman queue, mvmsta->sta_id); 121324afba76SLiad Kaufman 121424afba76SLiad Kaufman return 0; 121524afba76SLiad Kaufman } 121624afba76SLiad Kaufman 12178d98ae6eSLiad Kaufman /* 12188d98ae6eSLiad Kaufman * In DQA mode, after a HW restart the queues should be allocated as before, in 12198d98ae6eSLiad Kaufman * order to avoid race conditions when there are shared queues. This function 12208d98ae6eSLiad Kaufman * does the re-mapping and queue allocation. 12218d98ae6eSLiad Kaufman * 12228d98ae6eSLiad Kaufman * Note that re-enabling aggregations isn't done in this function. 12238d98ae6eSLiad Kaufman */ 12248d98ae6eSLiad Kaufman static void iwl_mvm_realloc_queues_after_restart(struct iwl_mvm *mvm, 12258d98ae6eSLiad Kaufman struct iwl_mvm_sta *mvm_sta) 12268d98ae6eSLiad Kaufman { 12278d98ae6eSLiad Kaufman unsigned int wdg_timeout = 12288d98ae6eSLiad Kaufman iwl_mvm_get_wd_timeout(mvm, mvm_sta->vif, false, false); 12298d98ae6eSLiad Kaufman int i; 12308d98ae6eSLiad Kaufman struct iwl_trans_txq_scd_cfg cfg = { 12318d98ae6eSLiad Kaufman .sta_id = mvm_sta->sta_id, 12328d98ae6eSLiad Kaufman .frame_limit = IWL_FRAME_LIMIT, 12338d98ae6eSLiad Kaufman }; 12348d98ae6eSLiad Kaufman 123503c902bfSJohannes Berg /* Make sure reserved queue is still marked as such (if allocated) */ 123603c902bfSJohannes Berg if (mvm_sta->reserved_queue != IEEE80211_INVAL_HW_QUEUE) 12378d98ae6eSLiad Kaufman mvm->queue_info[mvm_sta->reserved_queue].status = 12388d98ae6eSLiad Kaufman IWL_MVM_QUEUE_RESERVED; 12398d98ae6eSLiad Kaufman 12408d98ae6eSLiad Kaufman for (i = 0; i <= IWL_MAX_TID_COUNT; i++) { 12418d98ae6eSLiad Kaufman struct iwl_mvm_tid_data *tid_data = &mvm_sta->tid_data[i]; 12428d98ae6eSLiad Kaufman int txq_id = tid_data->txq_id; 12438d98ae6eSLiad Kaufman int ac; 12448d98ae6eSLiad Kaufman u8 mac_queue; 12458d98ae6eSLiad Kaufman 12466862fceeSSara Sharon if (txq_id == IWL_MVM_INVALID_QUEUE) 12478d98ae6eSLiad Kaufman continue; 12488d98ae6eSLiad Kaufman 12498d98ae6eSLiad Kaufman skb_queue_head_init(&tid_data->deferred_tx_frames); 12508d98ae6eSLiad Kaufman 12518d98ae6eSLiad Kaufman ac = tid_to_mac80211_ac[i]; 12528d98ae6eSLiad Kaufman mac_queue = mvm_sta->vif->hw_queue[ac]; 12538d98ae6eSLiad Kaufman 1254310181ecSSara Sharon if (iwl_mvm_has_new_tx_api(mvm)) { 1255310181ecSSara Sharon IWL_DEBUG_TX_QUEUES(mvm, 1256310181ecSSara Sharon "Re-mapping sta %d tid %d\n", 1257310181ecSSara Sharon mvm_sta->sta_id, i); 1258310181ecSSara Sharon txq_id = iwl_mvm_tvqm_enable_txq(mvm, mac_queue, 1259310181ecSSara Sharon mvm_sta->sta_id, 1260310181ecSSara Sharon i, wdg_timeout); 1261310181ecSSara Sharon tid_data->txq_id = txq_id; 12625d39051aSLiad Kaufman 12635d39051aSLiad Kaufman /* 12645d39051aSLiad Kaufman * Since we don't set the seq number after reset, and HW 12655d39051aSLiad Kaufman * sets it now, FW reset will cause the seq num to start 12665d39051aSLiad Kaufman * at 0 again, so driver will need to update it 12675d39051aSLiad Kaufman * internally as well, so it keeps in sync with real val 12685d39051aSLiad Kaufman */ 12695d39051aSLiad Kaufman tid_data->seq_number = 0; 1270310181ecSSara Sharon } else { 1271310181ecSSara Sharon u16 seq = IEEE80211_SEQ_TO_SN(tid_data->seq_number); 1272310181ecSSara Sharon 12738d98ae6eSLiad Kaufman cfg.tid = i; 1274cf6c6ea3SEmmanuel Grumbach cfg.fifo = iwl_mvm_mac_ac_to_tx_fifo(mvm, ac); 12758d98ae6eSLiad Kaufman cfg.aggregate = (txq_id >= IWL_MVM_DQA_MIN_DATA_QUEUE || 1276310181ecSSara Sharon txq_id == 1277310181ecSSara Sharon IWL_MVM_DQA_BSS_CLIENT_QUEUE); 12788d98ae6eSLiad Kaufman 12798d98ae6eSLiad Kaufman IWL_DEBUG_TX_QUEUES(mvm, 12808d98ae6eSLiad Kaufman "Re-mapping sta %d tid %d to queue %d\n", 12818d98ae6eSLiad Kaufman mvm_sta->sta_id, i, txq_id); 12828d98ae6eSLiad Kaufman 1283310181ecSSara Sharon iwl_mvm_enable_txq(mvm, txq_id, mac_queue, seq, &cfg, 1284310181ecSSara Sharon wdg_timeout); 12858d98ae6eSLiad Kaufman mvm->queue_info[txq_id].status = IWL_MVM_QUEUE_READY; 12868d98ae6eSLiad Kaufman } 128734e10860SSara Sharon } 12888d98ae6eSLiad Kaufman } 12898d98ae6eSLiad Kaufman 1290732d06e9SShaul Triebitz static int iwl_mvm_add_int_sta_common(struct iwl_mvm *mvm, 1291732d06e9SShaul Triebitz struct iwl_mvm_int_sta *sta, 1292732d06e9SShaul Triebitz const u8 *addr, 1293732d06e9SShaul Triebitz u16 mac_id, u16 color) 1294732d06e9SShaul Triebitz { 1295732d06e9SShaul Triebitz struct iwl_mvm_add_sta_cmd cmd; 1296732d06e9SShaul Triebitz int ret; 12973f497de9SLuca Coelho u32 status = ADD_STA_SUCCESS; 1298732d06e9SShaul Triebitz 1299732d06e9SShaul Triebitz lockdep_assert_held(&mvm->mutex); 1300732d06e9SShaul Triebitz 1301732d06e9SShaul Triebitz memset(&cmd, 0, sizeof(cmd)); 1302732d06e9SShaul Triebitz cmd.sta_id = sta->sta_id; 1303732d06e9SShaul Triebitz cmd.mac_id_n_color = cpu_to_le32(FW_CMD_ID_AND_COLOR(mac_id, 1304732d06e9SShaul Triebitz color)); 1305732d06e9SShaul Triebitz if (fw_has_api(&mvm->fw->ucode_capa, IWL_UCODE_TLV_API_STA_TYPE)) 1306732d06e9SShaul Triebitz cmd.station_type = sta->type; 1307732d06e9SShaul Triebitz 1308732d06e9SShaul Triebitz if (!iwl_mvm_has_new_tx_api(mvm)) 1309732d06e9SShaul Triebitz cmd.tfd_queue_msk = cpu_to_le32(sta->tfd_queue_msk); 1310732d06e9SShaul Triebitz cmd.tid_disable_tx = cpu_to_le16(0xffff); 1311732d06e9SShaul Triebitz 1312732d06e9SShaul Triebitz if (addr) 1313732d06e9SShaul Triebitz memcpy(cmd.addr, addr, ETH_ALEN); 1314732d06e9SShaul Triebitz 1315732d06e9SShaul Triebitz ret = iwl_mvm_send_cmd_pdu_status(mvm, ADD_STA, 1316732d06e9SShaul Triebitz iwl_mvm_add_sta_cmd_size(mvm), 1317732d06e9SShaul Triebitz &cmd, &status); 1318732d06e9SShaul Triebitz if (ret) 1319732d06e9SShaul Triebitz return ret; 1320732d06e9SShaul Triebitz 1321732d06e9SShaul Triebitz switch (status & IWL_ADD_STA_STATUS_MASK) { 1322732d06e9SShaul Triebitz case ADD_STA_SUCCESS: 1323732d06e9SShaul Triebitz IWL_DEBUG_INFO(mvm, "Internal station added.\n"); 1324732d06e9SShaul Triebitz return 0; 1325732d06e9SShaul Triebitz default: 1326732d06e9SShaul Triebitz ret = -EIO; 1327732d06e9SShaul Triebitz IWL_ERR(mvm, "Add internal station failed, status=0x%x\n", 1328732d06e9SShaul Triebitz status); 1329732d06e9SShaul Triebitz break; 1330732d06e9SShaul Triebitz } 1331732d06e9SShaul Triebitz return ret; 1332732d06e9SShaul Triebitz } 1333732d06e9SShaul Triebitz 1334e705c121SKalle Valo int iwl_mvm_add_sta(struct iwl_mvm *mvm, 1335e705c121SKalle Valo struct ieee80211_vif *vif, 1336e705c121SKalle Valo struct ieee80211_sta *sta) 1337e705c121SKalle Valo { 1338e705c121SKalle Valo struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 1339e705c121SKalle Valo struct iwl_mvm_sta *mvm_sta = iwl_mvm_sta_from_mac80211(sta); 1340a571f5f6SSara Sharon struct iwl_mvm_rxq_dup_data *dup_data; 1341e705c121SKalle Valo int i, ret, sta_id; 1342732d06e9SShaul Triebitz bool sta_update = false; 1343732d06e9SShaul Triebitz unsigned int sta_flags = 0; 1344e705c121SKalle Valo 1345e705c121SKalle Valo lockdep_assert_held(&mvm->mutex); 1346e705c121SKalle Valo 1347e705c121SKalle Valo if (!test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status)) 1348e705c121SKalle Valo sta_id = iwl_mvm_find_free_sta_id(mvm, 1349e705c121SKalle Valo ieee80211_vif_type_p2p(vif)); 1350e705c121SKalle Valo else 1351e705c121SKalle Valo sta_id = mvm_sta->sta_id; 1352e705c121SKalle Valo 13530ae98812SSara Sharon if (sta_id == IWL_MVM_INVALID_STA) 1354e705c121SKalle Valo return -ENOSPC; 1355e705c121SKalle Valo 1356e705c121SKalle Valo spin_lock_init(&mvm_sta->lock); 1357e705c121SKalle Valo 1358c8f54701SJohannes Berg /* if this is a HW restart re-alloc existing queues */ 1359c8f54701SJohannes Berg if (test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status)) { 1360732d06e9SShaul Triebitz struct iwl_mvm_int_sta tmp_sta = { 1361732d06e9SShaul Triebitz .sta_id = sta_id, 1362732d06e9SShaul Triebitz .type = mvm_sta->sta_type, 1363732d06e9SShaul Triebitz }; 1364732d06e9SShaul Triebitz 1365732d06e9SShaul Triebitz /* 1366732d06e9SShaul Triebitz * First add an empty station since allocating 1367732d06e9SShaul Triebitz * a queue requires a valid station 1368732d06e9SShaul Triebitz */ 1369732d06e9SShaul Triebitz ret = iwl_mvm_add_int_sta_common(mvm, &tmp_sta, sta->addr, 1370732d06e9SShaul Triebitz mvmvif->id, mvmvif->color); 1371732d06e9SShaul Triebitz if (ret) 1372732d06e9SShaul Triebitz goto err; 1373732d06e9SShaul Triebitz 13748d98ae6eSLiad Kaufman iwl_mvm_realloc_queues_after_restart(mvm, mvm_sta); 1375732d06e9SShaul Triebitz sta_update = true; 1376732d06e9SShaul Triebitz sta_flags = iwl_mvm_has_new_tx_api(mvm) ? 0 : STA_MODIFY_QUEUES; 13778d98ae6eSLiad Kaufman goto update_fw; 13788d98ae6eSLiad Kaufman } 13798d98ae6eSLiad Kaufman 1380e705c121SKalle Valo mvm_sta->sta_id = sta_id; 1381e705c121SKalle Valo mvm_sta->mac_id_n_color = FW_CMD_ID_AND_COLOR(mvmvif->id, 1382e705c121SKalle Valo mvmvif->color); 1383e705c121SKalle Valo mvm_sta->vif = vif; 1384a58bb468SLiad Kaufman if (!mvm->trans->cfg->gen2) 1385e705c121SKalle Valo mvm_sta->max_agg_bufsize = LINK_QUAL_AGG_FRAME_LIMIT_DEF; 1386a58bb468SLiad Kaufman else 1387a58bb468SLiad Kaufman mvm_sta->max_agg_bufsize = LINK_QUAL_AGG_FRAME_LIMIT_GEN2_DEF; 1388e705c121SKalle Valo mvm_sta->tx_protection = 0; 1389e705c121SKalle Valo mvm_sta->tt_tx_protection = false; 1390ced19f26SSara Sharon mvm_sta->sta_type = sta->tdls ? IWL_STA_TDLS_LINK : IWL_STA_LINK; 1391e705c121SKalle Valo 1392e705c121SKalle Valo /* HW restart, don't assume the memory has been zeroed */ 1393e705c121SKalle Valo mvm_sta->tid_disable_agg = 0xffff; /* No aggs at first */ 1394e705c121SKalle Valo mvm_sta->tfd_queue_msk = 0; 1395e705c121SKalle Valo 1396e705c121SKalle Valo /* for HW restart - reset everything but the sequence number */ 139724afba76SLiad Kaufman for (i = 0; i <= IWL_MAX_TID_COUNT; i++) { 1398e705c121SKalle Valo u16 seq = mvm_sta->tid_data[i].seq_number; 1399e705c121SKalle Valo memset(&mvm_sta->tid_data[i], 0, sizeof(mvm_sta->tid_data[i])); 1400e705c121SKalle Valo mvm_sta->tid_data[i].seq_number = seq; 140124afba76SLiad Kaufman 140224afba76SLiad Kaufman /* 140324afba76SLiad Kaufman * Mark all queues for this STA as unallocated and defer TX 140424afba76SLiad Kaufman * frames until the queue is allocated 140524afba76SLiad Kaufman */ 14066862fceeSSara Sharon mvm_sta->tid_data[i].txq_id = IWL_MVM_INVALID_QUEUE; 140724afba76SLiad Kaufman skb_queue_head_init(&mvm_sta->tid_data[i].deferred_tx_frames); 1408e705c121SKalle Valo } 140924afba76SLiad Kaufman mvm_sta->deferred_traffic_tid_map = 0; 1410e705c121SKalle Valo mvm_sta->agg_tids = 0; 1411e705c121SKalle Valo 1412a571f5f6SSara Sharon if (iwl_mvm_has_new_rx_api(mvm) && 1413a571f5f6SSara Sharon !test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status)) { 141492c4dca6SJohannes Berg int q; 141592c4dca6SJohannes Berg 1416a571f5f6SSara Sharon dup_data = kcalloc(mvm->trans->num_rx_queues, 141792c4dca6SJohannes Berg sizeof(*dup_data), GFP_KERNEL); 1418a571f5f6SSara Sharon if (!dup_data) 1419a571f5f6SSara Sharon return -ENOMEM; 142092c4dca6SJohannes Berg /* 142192c4dca6SJohannes Berg * Initialize all the last_seq values to 0xffff which can never 142292c4dca6SJohannes Berg * compare equal to the frame's seq_ctrl in the check in 142392c4dca6SJohannes Berg * iwl_mvm_is_dup() since the lower 4 bits are the fragment 142492c4dca6SJohannes Berg * number and fragmented packets don't reach that function. 142592c4dca6SJohannes Berg * 142692c4dca6SJohannes Berg * This thus allows receiving a packet with seqno 0 and the 142792c4dca6SJohannes Berg * retry bit set as the very first packet on a new TID. 142892c4dca6SJohannes Berg */ 142992c4dca6SJohannes Berg for (q = 0; q < mvm->trans->num_rx_queues; q++) 143092c4dca6SJohannes Berg memset(dup_data[q].last_seq, 0xff, 143192c4dca6SJohannes Berg sizeof(dup_data[q].last_seq)); 1432a571f5f6SSara Sharon mvm_sta->dup_data = dup_data; 1433a571f5f6SSara Sharon } 1434a571f5f6SSara Sharon 1435c8f54701SJohannes Berg if (!iwl_mvm_has_new_tx_api(mvm)) { 1436d5216a28SLiad Kaufman ret = iwl_mvm_reserve_sta_stream(mvm, sta, 1437d5216a28SLiad Kaufman ieee80211_vif_type_p2p(vif)); 143824afba76SLiad Kaufman if (ret) 143924afba76SLiad Kaufman goto err; 144024afba76SLiad Kaufman } 144124afba76SLiad Kaufman 14429f66a397SGregory Greenman /* 14439f66a397SGregory Greenman * if rs is registered with mac80211, then "add station" will be handled 14449f66a397SGregory Greenman * via the corresponding ops, otherwise need to notify rate scaling here 14459f66a397SGregory Greenman */ 14464243edb4SEmmanuel Grumbach if (iwl_mvm_has_tlc_offload(mvm)) 14479f66a397SGregory Greenman iwl_mvm_rs_add_sta(mvm, mvm_sta); 14489f66a397SGregory Greenman 14498d98ae6eSLiad Kaufman update_fw: 1450732d06e9SShaul Triebitz ret = iwl_mvm_sta_send_to_fw(mvm, sta, sta_update, sta_flags); 1451e705c121SKalle Valo if (ret) 1452e705c121SKalle Valo goto err; 1453e705c121SKalle Valo 1454e705c121SKalle Valo if (vif->type == NL80211_IFTYPE_STATION) { 1455e705c121SKalle Valo if (!sta->tdls) { 14560ae98812SSara Sharon WARN_ON(mvmvif->ap_sta_id != IWL_MVM_INVALID_STA); 1457e705c121SKalle Valo mvmvif->ap_sta_id = sta_id; 1458e705c121SKalle Valo } else { 14590ae98812SSara Sharon WARN_ON(mvmvif->ap_sta_id == IWL_MVM_INVALID_STA); 1460e705c121SKalle Valo } 1461e705c121SKalle Valo } 1462e705c121SKalle Valo 1463e705c121SKalle Valo rcu_assign_pointer(mvm->fw_id_to_mac_id[sta_id], sta); 1464e705c121SKalle Valo 1465e705c121SKalle Valo return 0; 1466e705c121SKalle Valo 1467e705c121SKalle Valo err: 1468e705c121SKalle Valo return ret; 1469e705c121SKalle Valo } 1470e705c121SKalle Valo 1471e705c121SKalle Valo int iwl_mvm_drain_sta(struct iwl_mvm *mvm, struct iwl_mvm_sta *mvmsta, 1472e705c121SKalle Valo bool drain) 1473e705c121SKalle Valo { 1474e705c121SKalle Valo struct iwl_mvm_add_sta_cmd cmd = {}; 1475e705c121SKalle Valo int ret; 1476e705c121SKalle Valo u32 status; 1477e705c121SKalle Valo 1478e705c121SKalle Valo lockdep_assert_held(&mvm->mutex); 1479e705c121SKalle Valo 1480e705c121SKalle Valo cmd.mac_id_n_color = cpu_to_le32(mvmsta->mac_id_n_color); 1481e705c121SKalle Valo cmd.sta_id = mvmsta->sta_id; 1482e705c121SKalle Valo cmd.add_modify = STA_MODE_MODIFY; 1483e705c121SKalle Valo cmd.station_flags = drain ? cpu_to_le32(STA_FLG_DRAIN_FLOW) : 0; 1484e705c121SKalle Valo cmd.station_flags_msk = cpu_to_le32(STA_FLG_DRAIN_FLOW); 1485e705c121SKalle Valo 1486e705c121SKalle Valo status = ADD_STA_SUCCESS; 1487854c5705SSara Sharon ret = iwl_mvm_send_cmd_pdu_status(mvm, ADD_STA, 1488854c5705SSara Sharon iwl_mvm_add_sta_cmd_size(mvm), 1489e705c121SKalle Valo &cmd, &status); 1490e705c121SKalle Valo if (ret) 1491e705c121SKalle Valo return ret; 1492e705c121SKalle Valo 1493837c4da9SSara Sharon switch (status & IWL_ADD_STA_STATUS_MASK) { 1494e705c121SKalle Valo case ADD_STA_SUCCESS: 1495e705c121SKalle Valo IWL_DEBUG_INFO(mvm, "Frames for staid %d will drained in fw\n", 1496e705c121SKalle Valo mvmsta->sta_id); 1497e705c121SKalle Valo break; 1498e705c121SKalle Valo default: 1499e705c121SKalle Valo ret = -EIO; 1500e705c121SKalle Valo IWL_ERR(mvm, "Couldn't drain frames for staid %d\n", 1501e705c121SKalle Valo mvmsta->sta_id); 1502e705c121SKalle Valo break; 1503e705c121SKalle Valo } 1504e705c121SKalle Valo 1505e705c121SKalle Valo return ret; 1506e705c121SKalle Valo } 1507e705c121SKalle Valo 1508e705c121SKalle Valo /* 1509e705c121SKalle Valo * Remove a station from the FW table. Before sending the command to remove 1510e705c121SKalle Valo * the station validate that the station is indeed known to the driver (sanity 1511e705c121SKalle Valo * only). 1512e705c121SKalle Valo */ 1513e705c121SKalle Valo static int iwl_mvm_rm_sta_common(struct iwl_mvm *mvm, u8 sta_id) 1514e705c121SKalle Valo { 1515e705c121SKalle Valo struct ieee80211_sta *sta; 1516e705c121SKalle Valo struct iwl_mvm_rm_sta_cmd rm_sta_cmd = { 1517e705c121SKalle Valo .sta_id = sta_id, 1518e705c121SKalle Valo }; 1519e705c121SKalle Valo int ret; 1520e705c121SKalle Valo 1521e705c121SKalle Valo sta = rcu_dereference_protected(mvm->fw_id_to_mac_id[sta_id], 1522e705c121SKalle Valo lockdep_is_held(&mvm->mutex)); 1523e705c121SKalle Valo 1524e705c121SKalle Valo /* Note: internal stations are marked as error values */ 1525e705c121SKalle Valo if (!sta) { 1526e705c121SKalle Valo IWL_ERR(mvm, "Invalid station id\n"); 1527e705c121SKalle Valo return -EINVAL; 1528e705c121SKalle Valo } 1529e705c121SKalle Valo 1530e705c121SKalle Valo ret = iwl_mvm_send_cmd_pdu(mvm, REMOVE_STA, 0, 1531e705c121SKalle Valo sizeof(rm_sta_cmd), &rm_sta_cmd); 1532e705c121SKalle Valo if (ret) { 1533e705c121SKalle Valo IWL_ERR(mvm, "Failed to remove station. Id=%d\n", sta_id); 1534e705c121SKalle Valo return ret; 1535e705c121SKalle Valo } 1536e705c121SKalle Valo 1537e705c121SKalle Valo return 0; 1538e705c121SKalle Valo } 1539e705c121SKalle Valo 154024afba76SLiad Kaufman static void iwl_mvm_disable_sta_queues(struct iwl_mvm *mvm, 154124afba76SLiad Kaufman struct ieee80211_vif *vif, 154224afba76SLiad Kaufman struct iwl_mvm_sta *mvm_sta) 154324afba76SLiad Kaufman { 154424afba76SLiad Kaufman int ac; 154524afba76SLiad Kaufman int i; 154624afba76SLiad Kaufman 154724afba76SLiad Kaufman lockdep_assert_held(&mvm->mutex); 154824afba76SLiad Kaufman 154924afba76SLiad Kaufman for (i = 0; i < ARRAY_SIZE(mvm_sta->tid_data); i++) { 15506862fceeSSara Sharon if (mvm_sta->tid_data[i].txq_id == IWL_MVM_INVALID_QUEUE) 155124afba76SLiad Kaufman continue; 155224afba76SLiad Kaufman 155324afba76SLiad Kaufman ac = iwl_mvm_tid_to_ac_queue(i); 155424afba76SLiad Kaufman iwl_mvm_disable_txq(mvm, mvm_sta->tid_data[i].txq_id, 155524afba76SLiad Kaufman vif->hw_queue[ac], i, 0); 15566862fceeSSara Sharon mvm_sta->tid_data[i].txq_id = IWL_MVM_INVALID_QUEUE; 155724afba76SLiad Kaufman } 155824afba76SLiad Kaufman } 155924afba76SLiad Kaufman 1560d6d517b7SSara Sharon int iwl_mvm_wait_sta_queues_empty(struct iwl_mvm *mvm, 1561d6d517b7SSara Sharon struct iwl_mvm_sta *mvm_sta) 1562d6d517b7SSara Sharon { 1563bec9522aSSharon Dvir int i; 1564d6d517b7SSara Sharon 1565d6d517b7SSara Sharon for (i = 0; i < ARRAY_SIZE(mvm_sta->tid_data); i++) { 1566d6d517b7SSara Sharon u16 txq_id; 1567bec9522aSSharon Dvir int ret; 1568d6d517b7SSara Sharon 1569d6d517b7SSara Sharon spin_lock_bh(&mvm_sta->lock); 1570d6d517b7SSara Sharon txq_id = mvm_sta->tid_data[i].txq_id; 1571d6d517b7SSara Sharon spin_unlock_bh(&mvm_sta->lock); 1572d6d517b7SSara Sharon 1573d6d517b7SSara Sharon if (txq_id == IWL_MVM_INVALID_QUEUE) 1574d6d517b7SSara Sharon continue; 1575d6d517b7SSara Sharon 1576d6d517b7SSara Sharon ret = iwl_trans_wait_txq_empty(mvm->trans, txq_id); 1577d6d517b7SSara Sharon if (ret) 1578bec9522aSSharon Dvir return ret; 1579d6d517b7SSara Sharon } 1580d6d517b7SSara Sharon 1581bec9522aSSharon Dvir return 0; 1582d6d517b7SSara Sharon } 1583d6d517b7SSara Sharon 1584e705c121SKalle Valo int iwl_mvm_rm_sta(struct iwl_mvm *mvm, 1585e705c121SKalle Valo struct ieee80211_vif *vif, 1586e705c121SKalle Valo struct ieee80211_sta *sta) 1587e705c121SKalle Valo { 1588e705c121SKalle Valo struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 1589e705c121SKalle Valo struct iwl_mvm_sta *mvm_sta = iwl_mvm_sta_from_mac80211(sta); 159094c3e614SSara Sharon u8 sta_id = mvm_sta->sta_id; 1591e705c121SKalle Valo int ret; 1592e705c121SKalle Valo 1593e705c121SKalle Valo lockdep_assert_held(&mvm->mutex); 1594e705c121SKalle Valo 1595a571f5f6SSara Sharon if (iwl_mvm_has_new_rx_api(mvm)) 1596a571f5f6SSara Sharon kfree(mvm_sta->dup_data); 1597a571f5f6SSara Sharon 1598e705c121SKalle Valo ret = iwl_mvm_drain_sta(mvm, mvm_sta, true); 1599e705c121SKalle Valo if (ret) 1600e705c121SKalle Valo return ret; 1601c8f54701SJohannes Berg 1602e705c121SKalle Valo /* flush its queues here since we are freeing mvm_sta */ 1603d49394a1SSara Sharon ret = iwl_mvm_flush_sta(mvm, mvm_sta, false, 0); 1604e705c121SKalle Valo if (ret) 1605e705c121SKalle Valo return ret; 1606d6d517b7SSara Sharon if (iwl_mvm_has_new_tx_api(mvm)) { 1607d6d517b7SSara Sharon ret = iwl_mvm_wait_sta_queues_empty(mvm, mvm_sta); 1608d6d517b7SSara Sharon } else { 1609d6d517b7SSara Sharon u32 q_mask = mvm_sta->tfd_queue_msk; 1610d6d517b7SSara Sharon 1611a1a57877SSara Sharon ret = iwl_trans_wait_tx_queues_empty(mvm->trans, 1612d6d517b7SSara Sharon q_mask); 1613d6d517b7SSara Sharon } 1614e705c121SKalle Valo if (ret) 1615e705c121SKalle Valo return ret; 1616c8f54701SJohannes Berg 1617e705c121SKalle Valo ret = iwl_mvm_drain_sta(mvm, mvm_sta, false); 1618e705c121SKalle Valo 161956214749SLiad Kaufman iwl_mvm_disable_sta_queues(mvm, vif, mvm_sta); 162056214749SLiad Kaufman 162156214749SLiad Kaufman /* If there is a TXQ still marked as reserved - free it */ 1622c8f54701SJohannes Berg if (mvm_sta->reserved_queue != IEEE80211_INVAL_HW_QUEUE) { 1623a0315deaSLiad Kaufman u8 reserved_txq = mvm_sta->reserved_queue; 1624a0315deaSLiad Kaufman enum iwl_mvm_queue_status *status; 1625a0315deaSLiad Kaufman 1626a0315deaSLiad Kaufman /* 1627a0315deaSLiad Kaufman * If no traffic has gone through the reserved TXQ - it 1628a0315deaSLiad Kaufman * is still marked as IWL_MVM_QUEUE_RESERVED, and 1629a0315deaSLiad Kaufman * should be manually marked as free again 1630a0315deaSLiad Kaufman */ 1631a0315deaSLiad Kaufman spin_lock_bh(&mvm->queue_info_lock); 1632a0315deaSLiad Kaufman status = &mvm->queue_info[reserved_txq].status; 1633a0315deaSLiad Kaufman if (WARN((*status != IWL_MVM_QUEUE_RESERVED) && 1634a0315deaSLiad Kaufman (*status != IWL_MVM_QUEUE_FREE), 1635a0315deaSLiad Kaufman "sta_id %d reserved txq %d status %d", 163694c3e614SSara Sharon sta_id, reserved_txq, *status)) { 1637a0315deaSLiad Kaufman spin_unlock_bh(&mvm->queue_info_lock); 1638a0315deaSLiad Kaufman return -EINVAL; 1639a0315deaSLiad Kaufman } 1640a0315deaSLiad Kaufman 1641a0315deaSLiad Kaufman *status = IWL_MVM_QUEUE_FREE; 1642a0315deaSLiad Kaufman spin_unlock_bh(&mvm->queue_info_lock); 1643a0315deaSLiad Kaufman } 1644a0315deaSLiad Kaufman 1645e3118ad7SLiad Kaufman if (vif->type == NL80211_IFTYPE_STATION && 164694c3e614SSara Sharon mvmvif->ap_sta_id == sta_id) { 1647e3118ad7SLiad Kaufman /* if associated - we can't remove the AP STA now */ 1648e705c121SKalle Valo if (vif->bss_conf.assoc) 1649e705c121SKalle Valo return ret; 1650e705c121SKalle Valo 1651e705c121SKalle Valo /* unassoc - go ahead - remove the AP STA now */ 16520ae98812SSara Sharon mvmvif->ap_sta_id = IWL_MVM_INVALID_STA; 1653e705c121SKalle Valo 1654e705c121SKalle Valo /* clear d0i3_ap_sta_id if no longer relevant */ 165594c3e614SSara Sharon if (mvm->d0i3_ap_sta_id == sta_id) 16560ae98812SSara Sharon mvm->d0i3_ap_sta_id = IWL_MVM_INVALID_STA; 1657e705c121SKalle Valo } 1658e705c121SKalle Valo 1659e705c121SKalle Valo /* 1660e705c121SKalle Valo * This shouldn't happen - the TDLS channel switch should be canceled 1661e705c121SKalle Valo * before the STA is removed. 1662e705c121SKalle Valo */ 166394c3e614SSara Sharon if (WARN_ON_ONCE(mvm->tdls_cs.peer.sta_id == sta_id)) { 16640ae98812SSara Sharon mvm->tdls_cs.peer.sta_id = IWL_MVM_INVALID_STA; 1665e705c121SKalle Valo cancel_delayed_work(&mvm->tdls_cs.dwork); 1666e705c121SKalle Valo } 1667e705c121SKalle Valo 1668e705c121SKalle Valo /* 1669e705c121SKalle Valo * Make sure that the tx response code sees the station as -EBUSY and 1670e705c121SKalle Valo * calls the drain worker. 1671e705c121SKalle Valo */ 1672e705c121SKalle Valo spin_lock_bh(&mvm_sta->lock); 1673e705c121SKalle Valo spin_unlock_bh(&mvm_sta->lock); 1674e705c121SKalle Valo 1675e705c121SKalle Valo ret = iwl_mvm_rm_sta_common(mvm, mvm_sta->sta_id); 1676e705c121SKalle Valo RCU_INIT_POINTER(mvm->fw_id_to_mac_id[mvm_sta->sta_id], NULL); 1677e705c121SKalle Valo 1678e705c121SKalle Valo return ret; 1679e705c121SKalle Valo } 1680e705c121SKalle Valo 1681e705c121SKalle Valo int iwl_mvm_rm_sta_id(struct iwl_mvm *mvm, 1682e705c121SKalle Valo struct ieee80211_vif *vif, 1683e705c121SKalle Valo u8 sta_id) 1684e705c121SKalle Valo { 1685e705c121SKalle Valo int ret = iwl_mvm_rm_sta_common(mvm, sta_id); 1686e705c121SKalle Valo 1687e705c121SKalle Valo lockdep_assert_held(&mvm->mutex); 1688e705c121SKalle Valo 1689e705c121SKalle Valo RCU_INIT_POINTER(mvm->fw_id_to_mac_id[sta_id], NULL); 1690e705c121SKalle Valo return ret; 1691e705c121SKalle Valo } 1692e705c121SKalle Valo 16930e39eb03SChaya Rachel Ivgi int iwl_mvm_allocate_int_sta(struct iwl_mvm *mvm, 1694e705c121SKalle Valo struct iwl_mvm_int_sta *sta, 1695ced19f26SSara Sharon u32 qmask, enum nl80211_iftype iftype, 1696ced19f26SSara Sharon enum iwl_sta_type type) 1697e705c121SKalle Valo { 1698e705c121SKalle Valo if (!test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status)) { 1699e705c121SKalle Valo sta->sta_id = iwl_mvm_find_free_sta_id(mvm, iftype); 17000ae98812SSara Sharon if (WARN_ON_ONCE(sta->sta_id == IWL_MVM_INVALID_STA)) 1701e705c121SKalle Valo return -ENOSPC; 1702e705c121SKalle Valo } 1703e705c121SKalle Valo 1704e705c121SKalle Valo sta->tfd_queue_msk = qmask; 1705ced19f26SSara Sharon sta->type = type; 1706e705c121SKalle Valo 1707e705c121SKalle Valo /* put a non-NULL value so iterating over the stations won't stop */ 1708e705c121SKalle Valo rcu_assign_pointer(mvm->fw_id_to_mac_id[sta->sta_id], ERR_PTR(-EINVAL)); 1709e705c121SKalle Valo return 0; 1710e705c121SKalle Valo } 1711e705c121SKalle Valo 171226d6c16bSSara Sharon void iwl_mvm_dealloc_int_sta(struct iwl_mvm *mvm, struct iwl_mvm_int_sta *sta) 1713e705c121SKalle Valo { 1714e705c121SKalle Valo RCU_INIT_POINTER(mvm->fw_id_to_mac_id[sta->sta_id], NULL); 1715e705c121SKalle Valo memset(sta, 0, sizeof(struct iwl_mvm_int_sta)); 17160ae98812SSara Sharon sta->sta_id = IWL_MVM_INVALID_STA; 1717e705c121SKalle Valo } 1718e705c121SKalle Valo 1719b13f43a4SEmmanuel Grumbach static void iwl_mvm_enable_aux_snif_queue(struct iwl_mvm *mvm, u16 *queue, 1720b13f43a4SEmmanuel Grumbach u8 sta_id, u8 fifo) 1721e705c121SKalle Valo { 1722e705c121SKalle Valo unsigned int wdg_timeout = iwlmvm_mod_params.tfd_q_hang_detect ? 1723e705c121SKalle Valo mvm->cfg->base_params->wd_timeout : 1724e705c121SKalle Valo IWL_WATCHDOG_DISABLED; 1725e705c121SKalle Valo 1726310181ecSSara Sharon if (iwl_mvm_has_new_tx_api(mvm)) { 1727b13f43a4SEmmanuel Grumbach int tvqm_queue = 1728b13f43a4SEmmanuel Grumbach iwl_mvm_tvqm_enable_txq(mvm, *queue, sta_id, 1729310181ecSSara Sharon IWL_MAX_TID_COUNT, 1730310181ecSSara Sharon wdg_timeout); 1731b13f43a4SEmmanuel Grumbach *queue = tvqm_queue; 1732c8f54701SJohannes Berg } else { 173328d0793eSLiad Kaufman struct iwl_trans_txq_scd_cfg cfg = { 1734b13f43a4SEmmanuel Grumbach .fifo = fifo, 1735b13f43a4SEmmanuel Grumbach .sta_id = sta_id, 173628d0793eSLiad Kaufman .tid = IWL_MAX_TID_COUNT, 173728d0793eSLiad Kaufman .aggregate = false, 173828d0793eSLiad Kaufman .frame_limit = IWL_FRAME_LIMIT, 173928d0793eSLiad Kaufman }; 174028d0793eSLiad Kaufman 1741b13f43a4SEmmanuel Grumbach iwl_mvm_enable_txq(mvm, *queue, *queue, 0, &cfg, wdg_timeout); 174228d0793eSLiad Kaufman } 1743c5a719eeSSara Sharon } 1744c5a719eeSSara Sharon 1745c5a719eeSSara Sharon int iwl_mvm_add_aux_sta(struct iwl_mvm *mvm) 1746c5a719eeSSara Sharon { 1747c5a719eeSSara Sharon int ret; 1748c5a719eeSSara Sharon 1749c5a719eeSSara Sharon lockdep_assert_held(&mvm->mutex); 1750c5a719eeSSara Sharon 1751c5a719eeSSara Sharon /* Allocate aux station and assign to it the aux queue */ 1752c5a719eeSSara Sharon ret = iwl_mvm_allocate_int_sta(mvm, &mvm->aux_sta, BIT(mvm->aux_queue), 1753ced19f26SSara Sharon NL80211_IFTYPE_UNSPECIFIED, 1754ced19f26SSara Sharon IWL_STA_AUX_ACTIVITY); 1755c5a719eeSSara Sharon if (ret) 1756c5a719eeSSara Sharon return ret; 1757c5a719eeSSara Sharon 1758c5a719eeSSara Sharon /* Map Aux queue to fifo - needs to happen before adding Aux station */ 1759c5a719eeSSara Sharon if (!iwl_mvm_has_new_tx_api(mvm)) 1760b13f43a4SEmmanuel Grumbach iwl_mvm_enable_aux_snif_queue(mvm, &mvm->aux_queue, 1761b13f43a4SEmmanuel Grumbach mvm->aux_sta.sta_id, 1762b13f43a4SEmmanuel Grumbach IWL_MVM_TX_FIFO_MCAST); 176328d0793eSLiad Kaufman 1764e705c121SKalle Valo ret = iwl_mvm_add_int_sta_common(mvm, &mvm->aux_sta, NULL, 1765e705c121SKalle Valo MAC_INDEX_AUX, 0); 1766c5a719eeSSara Sharon if (ret) { 1767e705c121SKalle Valo iwl_mvm_dealloc_int_sta(mvm, &mvm->aux_sta); 1768e705c121SKalle Valo return ret; 1769e705c121SKalle Valo } 1770e705c121SKalle Valo 1771c5a719eeSSara Sharon /* 17722f7a3863SLuca Coelho * For 22000 firmware and on we cannot add queue to a station unknown 1773c5a719eeSSara Sharon * to firmware so enable queue here - after the station was added 1774c5a719eeSSara Sharon */ 1775c5a719eeSSara Sharon if (iwl_mvm_has_new_tx_api(mvm)) 1776b13f43a4SEmmanuel Grumbach iwl_mvm_enable_aux_snif_queue(mvm, &mvm->aux_queue, 1777b13f43a4SEmmanuel Grumbach mvm->aux_sta.sta_id, 1778b13f43a4SEmmanuel Grumbach IWL_MVM_TX_FIFO_MCAST); 1779c5a719eeSSara Sharon 1780c5a719eeSSara Sharon return 0; 1781c5a719eeSSara Sharon } 1782c5a719eeSSara Sharon 17830e39eb03SChaya Rachel Ivgi int iwl_mvm_add_snif_sta(struct iwl_mvm *mvm, struct ieee80211_vif *vif) 17840e39eb03SChaya Rachel Ivgi { 17850e39eb03SChaya Rachel Ivgi struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 1786b13f43a4SEmmanuel Grumbach int ret; 17870e39eb03SChaya Rachel Ivgi 17880e39eb03SChaya Rachel Ivgi lockdep_assert_held(&mvm->mutex); 1789b13f43a4SEmmanuel Grumbach 1790b13f43a4SEmmanuel Grumbach /* Map snif queue to fifo - must happen before adding snif station */ 1791b13f43a4SEmmanuel Grumbach if (!iwl_mvm_has_new_tx_api(mvm)) 1792b13f43a4SEmmanuel Grumbach iwl_mvm_enable_aux_snif_queue(mvm, &mvm->snif_queue, 1793b13f43a4SEmmanuel Grumbach mvm->snif_sta.sta_id, 1794b13f43a4SEmmanuel Grumbach IWL_MVM_TX_FIFO_BE); 1795b13f43a4SEmmanuel Grumbach 1796b13f43a4SEmmanuel Grumbach ret = iwl_mvm_add_int_sta_common(mvm, &mvm->snif_sta, vif->addr, 17970e39eb03SChaya Rachel Ivgi mvmvif->id, 0); 1798b13f43a4SEmmanuel Grumbach if (ret) 1799b13f43a4SEmmanuel Grumbach return ret; 1800b13f43a4SEmmanuel Grumbach 1801b13f43a4SEmmanuel Grumbach /* 1802b13f43a4SEmmanuel Grumbach * For 22000 firmware and on we cannot add queue to a station unknown 1803b13f43a4SEmmanuel Grumbach * to firmware so enable queue here - after the station was added 1804b13f43a4SEmmanuel Grumbach */ 1805b13f43a4SEmmanuel Grumbach if (iwl_mvm_has_new_tx_api(mvm)) 1806b13f43a4SEmmanuel Grumbach iwl_mvm_enable_aux_snif_queue(mvm, &mvm->snif_queue, 1807b13f43a4SEmmanuel Grumbach mvm->snif_sta.sta_id, 1808b13f43a4SEmmanuel Grumbach IWL_MVM_TX_FIFO_BE); 1809b13f43a4SEmmanuel Grumbach 1810b13f43a4SEmmanuel Grumbach return 0; 18110e39eb03SChaya Rachel Ivgi } 18120e39eb03SChaya Rachel Ivgi 18130e39eb03SChaya Rachel Ivgi int iwl_mvm_rm_snif_sta(struct iwl_mvm *mvm, struct ieee80211_vif *vif) 18140e39eb03SChaya Rachel Ivgi { 18150e39eb03SChaya Rachel Ivgi int ret; 18160e39eb03SChaya Rachel Ivgi 18170e39eb03SChaya Rachel Ivgi lockdep_assert_held(&mvm->mutex); 18180e39eb03SChaya Rachel Ivgi 1819b13f43a4SEmmanuel Grumbach iwl_mvm_disable_txq(mvm, mvm->snif_queue, mvm->snif_queue, 1820b13f43a4SEmmanuel Grumbach IWL_MAX_TID_COUNT, 0); 18210e39eb03SChaya Rachel Ivgi ret = iwl_mvm_rm_sta_common(mvm, mvm->snif_sta.sta_id); 18220e39eb03SChaya Rachel Ivgi if (ret) 18230e39eb03SChaya Rachel Ivgi IWL_WARN(mvm, "Failed sending remove station\n"); 18240e39eb03SChaya Rachel Ivgi 18250e39eb03SChaya Rachel Ivgi return ret; 18260e39eb03SChaya Rachel Ivgi } 18270e39eb03SChaya Rachel Ivgi 18280e39eb03SChaya Rachel Ivgi void iwl_mvm_dealloc_snif_sta(struct iwl_mvm *mvm) 18290e39eb03SChaya Rachel Ivgi { 18300e39eb03SChaya Rachel Ivgi iwl_mvm_dealloc_int_sta(mvm, &mvm->snif_sta); 18310e39eb03SChaya Rachel Ivgi } 18320e39eb03SChaya Rachel Ivgi 1833e705c121SKalle Valo void iwl_mvm_del_aux_sta(struct iwl_mvm *mvm) 1834e705c121SKalle Valo { 1835e705c121SKalle Valo lockdep_assert_held(&mvm->mutex); 1836e705c121SKalle Valo 1837e705c121SKalle Valo iwl_mvm_dealloc_int_sta(mvm, &mvm->aux_sta); 1838e705c121SKalle Valo } 1839e705c121SKalle Valo 1840e705c121SKalle Valo /* 1841e705c121SKalle Valo * Send the add station command for the vif's broadcast station. 1842e705c121SKalle Valo * Assumes that the station was already allocated. 1843e705c121SKalle Valo * 1844e705c121SKalle Valo * @mvm: the mvm component 1845e705c121SKalle Valo * @vif: the interface to which the broadcast station is added 1846e705c121SKalle Valo * @bsta: the broadcast station to add. 1847e705c121SKalle Valo */ 1848e705c121SKalle Valo int iwl_mvm_send_add_bcast_sta(struct iwl_mvm *mvm, struct ieee80211_vif *vif) 1849e705c121SKalle Valo { 1850e705c121SKalle Valo struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 1851e705c121SKalle Valo struct iwl_mvm_int_sta *bsta = &mvmvif->bcast_sta; 1852e705c121SKalle Valo static const u8 _baddr[] = {0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF}; 1853e705c121SKalle Valo const u8 *baddr = _baddr; 18547daa7624SJohannes Berg int queue; 1855df88c08dSLiad Kaufman int ret; 1856c5a719eeSSara Sharon unsigned int wdg_timeout = 1857c5a719eeSSara Sharon iwl_mvm_get_wd_timeout(mvm, vif, false, false); 1858de24f638SLiad Kaufman struct iwl_trans_txq_scd_cfg cfg = { 1859de24f638SLiad Kaufman .fifo = IWL_MVM_TX_FIFO_VO, 1860de24f638SLiad Kaufman .sta_id = mvmvif->bcast_sta.sta_id, 1861de24f638SLiad Kaufman .tid = IWL_MAX_TID_COUNT, 1862de24f638SLiad Kaufman .aggregate = false, 1863de24f638SLiad Kaufman .frame_limit = IWL_FRAME_LIMIT, 1864de24f638SLiad Kaufman }; 1865de24f638SLiad Kaufman 1866c5a719eeSSara Sharon lockdep_assert_held(&mvm->mutex); 1867c5a719eeSSara Sharon 1868c8f54701SJohannes Berg if (!iwl_mvm_has_new_tx_api(mvm)) { 18694d339989SLiad Kaufman if (vif->type == NL80211_IFTYPE_AP || 18704d339989SLiad Kaufman vif->type == NL80211_IFTYPE_ADHOC) 187149f71713SSara Sharon queue = mvm->probe_queue; 1872df88c08dSLiad Kaufman else if (vif->type == NL80211_IFTYPE_P2P_DEVICE) 187349f71713SSara Sharon queue = mvm->p2p_dev_queue; 1874df88c08dSLiad Kaufman else if (WARN(1, "Missing required TXQ for adding bcast STA\n")) 1875de24f638SLiad Kaufman return -EINVAL; 1876de24f638SLiad Kaufman 1877df88c08dSLiad Kaufman bsta->tfd_queue_msk |= BIT(queue); 1878c5a719eeSSara Sharon 1879c5a719eeSSara Sharon iwl_mvm_enable_txq(mvm, queue, vif->hw_queue[0], 0, 1880c5a719eeSSara Sharon &cfg, wdg_timeout); 1881de24f638SLiad Kaufman } 1882de24f638SLiad Kaufman 1883e705c121SKalle Valo if (vif->type == NL80211_IFTYPE_ADHOC) 1884e705c121SKalle Valo baddr = vif->bss_conf.bssid; 1885e705c121SKalle Valo 18860ae98812SSara Sharon if (WARN_ON_ONCE(bsta->sta_id == IWL_MVM_INVALID_STA)) 1887e705c121SKalle Valo return -ENOSPC; 1888e705c121SKalle Valo 1889df88c08dSLiad Kaufman ret = iwl_mvm_add_int_sta_common(mvm, bsta, baddr, 1890e705c121SKalle Valo mvmvif->id, mvmvif->color); 1891df88c08dSLiad Kaufman if (ret) 1892df88c08dSLiad Kaufman return ret; 1893df88c08dSLiad Kaufman 1894df88c08dSLiad Kaufman /* 18952f7a3863SLuca Coelho * For 22000 firmware and on we cannot add queue to a station unknown 1896c5a719eeSSara Sharon * to firmware so enable queue here - after the station was added 1897df88c08dSLiad Kaufman */ 1898310181ecSSara Sharon if (iwl_mvm_has_new_tx_api(mvm)) { 18997daa7624SJohannes Berg queue = iwl_mvm_tvqm_enable_txq(mvm, vif->hw_queue[0], 1900310181ecSSara Sharon bsta->sta_id, 1901310181ecSSara Sharon IWL_MAX_TID_COUNT, 1902c5a719eeSSara Sharon wdg_timeout); 19037daa7624SJohannes Berg 19047b758a11SLuca Coelho if (vif->type == NL80211_IFTYPE_AP || 19057b758a11SLuca Coelho vif->type == NL80211_IFTYPE_ADHOC) 1906310181ecSSara Sharon mvm->probe_queue = queue; 1907310181ecSSara Sharon else if (vif->type == NL80211_IFTYPE_P2P_DEVICE) 1908310181ecSSara Sharon mvm->p2p_dev_queue = queue; 1909310181ecSSara Sharon } 1910df88c08dSLiad Kaufman 1911df88c08dSLiad Kaufman return 0; 1912df88c08dSLiad Kaufman } 1913df88c08dSLiad Kaufman 1914df88c08dSLiad Kaufman static void iwl_mvm_free_bcast_sta_queues(struct iwl_mvm *mvm, 1915df88c08dSLiad Kaufman struct ieee80211_vif *vif) 1916df88c08dSLiad Kaufman { 1917df88c08dSLiad Kaufman struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 1918d167e81aSMordechai Goodstein int queue; 1919df88c08dSLiad Kaufman 1920df88c08dSLiad Kaufman lockdep_assert_held(&mvm->mutex); 1921df88c08dSLiad Kaufman 1922d49394a1SSara Sharon iwl_mvm_flush_sta(mvm, &mvmvif->bcast_sta, true, 0); 1923d49394a1SSara Sharon 1924d167e81aSMordechai Goodstein switch (vif->type) { 1925d167e81aSMordechai Goodstein case NL80211_IFTYPE_AP: 1926d167e81aSMordechai Goodstein case NL80211_IFTYPE_ADHOC: 1927d167e81aSMordechai Goodstein queue = mvm->probe_queue; 1928d167e81aSMordechai Goodstein break; 1929d167e81aSMordechai Goodstein case NL80211_IFTYPE_P2P_DEVICE: 1930d167e81aSMordechai Goodstein queue = mvm->p2p_dev_queue; 1931d167e81aSMordechai Goodstein break; 1932d167e81aSMordechai Goodstein default: 1933d167e81aSMordechai Goodstein WARN(1, "Can't free bcast queue on vif type %d\n", 1934d167e81aSMordechai Goodstein vif->type); 1935d167e81aSMordechai Goodstein return; 1936df88c08dSLiad Kaufman } 1937df88c08dSLiad Kaufman 1938d167e81aSMordechai Goodstein iwl_mvm_disable_txq(mvm, queue, vif->hw_queue[0], IWL_MAX_TID_COUNT, 0); 1939d167e81aSMordechai Goodstein if (iwl_mvm_has_new_tx_api(mvm)) 1940d167e81aSMordechai Goodstein return; 1941d167e81aSMordechai Goodstein 1942d167e81aSMordechai Goodstein WARN_ON(!(mvmvif->bcast_sta.tfd_queue_msk & BIT(queue))); 1943d167e81aSMordechai Goodstein mvmvif->bcast_sta.tfd_queue_msk &= ~BIT(queue); 1944e705c121SKalle Valo } 1945e705c121SKalle Valo 1946e705c121SKalle Valo /* Send the FW a request to remove the station from it's internal data 1947e705c121SKalle Valo * structures, but DO NOT remove the entry from the local data structures. */ 1948e705c121SKalle Valo int iwl_mvm_send_rm_bcast_sta(struct iwl_mvm *mvm, struct ieee80211_vif *vif) 1949e705c121SKalle Valo { 1950e705c121SKalle Valo struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 1951e705c121SKalle Valo int ret; 1952e705c121SKalle Valo 1953e705c121SKalle Valo lockdep_assert_held(&mvm->mutex); 1954e705c121SKalle Valo 1955df88c08dSLiad Kaufman iwl_mvm_free_bcast_sta_queues(mvm, vif); 1956df88c08dSLiad Kaufman 1957e705c121SKalle Valo ret = iwl_mvm_rm_sta_common(mvm, mvmvif->bcast_sta.sta_id); 1958e705c121SKalle Valo if (ret) 1959e705c121SKalle Valo IWL_WARN(mvm, "Failed sending remove station\n"); 1960e705c121SKalle Valo return ret; 1961e705c121SKalle Valo } 1962e705c121SKalle Valo 1963e705c121SKalle Valo int iwl_mvm_alloc_bcast_sta(struct iwl_mvm *mvm, struct ieee80211_vif *vif) 1964e705c121SKalle Valo { 1965e705c121SKalle Valo struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 1966e705c121SKalle Valo 1967e705c121SKalle Valo lockdep_assert_held(&mvm->mutex); 1968e705c121SKalle Valo 1969c8f54701SJohannes Berg return iwl_mvm_allocate_int_sta(mvm, &mvmvif->bcast_sta, 0, 1970ced19f26SSara Sharon ieee80211_vif_type_p2p(vif), 1971ced19f26SSara Sharon IWL_STA_GENERAL_PURPOSE); 1972e705c121SKalle Valo } 1973e705c121SKalle Valo 1974e705c121SKalle Valo /* Allocate a new station entry for the broadcast station to the given vif, 1975e705c121SKalle Valo * and send it to the FW. 1976e705c121SKalle Valo * Note that each P2P mac should have its own broadcast station. 1977e705c121SKalle Valo * 1978e705c121SKalle Valo * @mvm: the mvm component 1979e705c121SKalle Valo * @vif: the interface to which the broadcast station is added 1980e705c121SKalle Valo * @bsta: the broadcast station to add. */ 1981d197358bSLuca Coelho int iwl_mvm_add_p2p_bcast_sta(struct iwl_mvm *mvm, struct ieee80211_vif *vif) 1982e705c121SKalle Valo { 1983e705c121SKalle Valo struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 1984e705c121SKalle Valo struct iwl_mvm_int_sta *bsta = &mvmvif->bcast_sta; 1985e705c121SKalle Valo int ret; 1986e705c121SKalle Valo 1987e705c121SKalle Valo lockdep_assert_held(&mvm->mutex); 1988e705c121SKalle Valo 1989e705c121SKalle Valo ret = iwl_mvm_alloc_bcast_sta(mvm, vif); 1990e705c121SKalle Valo if (ret) 1991e705c121SKalle Valo return ret; 1992e705c121SKalle Valo 1993e705c121SKalle Valo ret = iwl_mvm_send_add_bcast_sta(mvm, vif); 1994e705c121SKalle Valo 1995e705c121SKalle Valo if (ret) 1996e705c121SKalle Valo iwl_mvm_dealloc_int_sta(mvm, bsta); 1997e705c121SKalle Valo 1998e705c121SKalle Valo return ret; 1999e705c121SKalle Valo } 2000e705c121SKalle Valo 2001e705c121SKalle Valo void iwl_mvm_dealloc_bcast_sta(struct iwl_mvm *mvm, struct ieee80211_vif *vif) 2002e705c121SKalle Valo { 2003e705c121SKalle Valo struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 2004e705c121SKalle Valo 2005e705c121SKalle Valo iwl_mvm_dealloc_int_sta(mvm, &mvmvif->bcast_sta); 2006e705c121SKalle Valo } 2007e705c121SKalle Valo 2008e705c121SKalle Valo /* 2009e705c121SKalle Valo * Send the FW a request to remove the station from it's internal data 2010e705c121SKalle Valo * structures, and in addition remove it from the local data structure. 2011e705c121SKalle Valo */ 2012d197358bSLuca Coelho int iwl_mvm_rm_p2p_bcast_sta(struct iwl_mvm *mvm, struct ieee80211_vif *vif) 2013e705c121SKalle Valo { 2014e705c121SKalle Valo int ret; 2015e705c121SKalle Valo 2016e705c121SKalle Valo lockdep_assert_held(&mvm->mutex); 2017e705c121SKalle Valo 2018e705c121SKalle Valo ret = iwl_mvm_send_rm_bcast_sta(mvm, vif); 2019e705c121SKalle Valo 2020e705c121SKalle Valo iwl_mvm_dealloc_bcast_sta(mvm, vif); 2021e705c121SKalle Valo 2022e705c121SKalle Valo return ret; 2023e705c121SKalle Valo } 2024e705c121SKalle Valo 202526d6c16bSSara Sharon /* 202626d6c16bSSara Sharon * Allocate a new station entry for the multicast station to the given vif, 202726d6c16bSSara Sharon * and send it to the FW. 202826d6c16bSSara Sharon * Note that each AP/GO mac should have its own multicast station. 202926d6c16bSSara Sharon * 203026d6c16bSSara Sharon * @mvm: the mvm component 203126d6c16bSSara Sharon * @vif: the interface to which the multicast station is added 203226d6c16bSSara Sharon */ 203326d6c16bSSara Sharon int iwl_mvm_add_mcast_sta(struct iwl_mvm *mvm, struct ieee80211_vif *vif) 203426d6c16bSSara Sharon { 203526d6c16bSSara Sharon struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 203626d6c16bSSara Sharon struct iwl_mvm_int_sta *msta = &mvmvif->mcast_sta; 203726d6c16bSSara Sharon static const u8 _maddr[] = {0x03, 0x00, 0x00, 0x00, 0x00, 0x00}; 203826d6c16bSSara Sharon const u8 *maddr = _maddr; 203926d6c16bSSara Sharon struct iwl_trans_txq_scd_cfg cfg = { 204026d6c16bSSara Sharon .fifo = IWL_MVM_TX_FIFO_MCAST, 204126d6c16bSSara Sharon .sta_id = msta->sta_id, 204226d6c16bSSara Sharon .tid = IWL_MAX_TID_COUNT, 204326d6c16bSSara Sharon .aggregate = false, 204426d6c16bSSara Sharon .frame_limit = IWL_FRAME_LIMIT, 204526d6c16bSSara Sharon }; 204626d6c16bSSara Sharon unsigned int timeout = iwl_mvm_get_wd_timeout(mvm, vif, false, false); 204726d6c16bSSara Sharon int ret; 204826d6c16bSSara Sharon 204926d6c16bSSara Sharon lockdep_assert_held(&mvm->mutex); 205026d6c16bSSara Sharon 2051ee48b722SLiad Kaufman if (WARN_ON(vif->type != NL80211_IFTYPE_AP && 2052ee48b722SLiad Kaufman vif->type != NL80211_IFTYPE_ADHOC)) 205326d6c16bSSara Sharon return -ENOTSUPP; 205426d6c16bSSara Sharon 2055ced19f26SSara Sharon /* 2056fc07bd8cSSara Sharon * In IBSS, ieee80211_check_queues() sets the cab_queue to be 2057fc07bd8cSSara Sharon * invalid, so make sure we use the queue we want. 2058fc07bd8cSSara Sharon * Note that this is done here as we want to avoid making DQA 2059fc07bd8cSSara Sharon * changes in mac80211 layer. 2060fc07bd8cSSara Sharon */ 2061fc07bd8cSSara Sharon if (vif->type == NL80211_IFTYPE_ADHOC) { 2062fc07bd8cSSara Sharon vif->cab_queue = IWL_MVM_DQA_GCAST_QUEUE; 2063fc07bd8cSSara Sharon mvmvif->cab_queue = vif->cab_queue; 2064fc07bd8cSSara Sharon } 2065fc07bd8cSSara Sharon 2066fc07bd8cSSara Sharon /* 2067ced19f26SSara Sharon * While in previous FWs we had to exclude cab queue from TFD queue 2068ced19f26SSara Sharon * mask, now it is needed as any other queue. 2069ced19f26SSara Sharon */ 2070ced19f26SSara Sharon if (!iwl_mvm_has_new_tx_api(mvm) && 2071ced19f26SSara Sharon fw_has_api(&mvm->fw->ucode_capa, IWL_UCODE_TLV_API_STA_TYPE)) { 2072ced19f26SSara Sharon iwl_mvm_enable_txq(mvm, vif->cab_queue, vif->cab_queue, 0, 2073ced19f26SSara Sharon &cfg, timeout); 2074ced19f26SSara Sharon msta->tfd_queue_msk |= BIT(vif->cab_queue); 2075ced19f26SSara Sharon } 207626d6c16bSSara Sharon ret = iwl_mvm_add_int_sta_common(mvm, msta, maddr, 207726d6c16bSSara Sharon mvmvif->id, mvmvif->color); 207826d6c16bSSara Sharon if (ret) { 207926d6c16bSSara Sharon iwl_mvm_dealloc_int_sta(mvm, msta); 208026d6c16bSSara Sharon return ret; 208126d6c16bSSara Sharon } 208226d6c16bSSara Sharon 208326d6c16bSSara Sharon /* 208426d6c16bSSara Sharon * Enable cab queue after the ADD_STA command is sent. 20852f7a3863SLuca Coelho * This is needed for 22000 firmware which won't accept SCD_QUEUE_CFG 2086ced19f26SSara Sharon * command with unknown station id, and for FW that doesn't support 2087ced19f26SSara Sharon * station API since the cab queue is not included in the 2088ced19f26SSara Sharon * tfd_queue_mask. 208926d6c16bSSara Sharon */ 2090310181ecSSara Sharon if (iwl_mvm_has_new_tx_api(mvm)) { 2091310181ecSSara Sharon int queue = iwl_mvm_tvqm_enable_txq(mvm, vif->cab_queue, 2092310181ecSSara Sharon msta->sta_id, 2093310181ecSSara Sharon IWL_MAX_TID_COUNT, 209426d6c16bSSara Sharon timeout); 2095e2af3fabSSara Sharon mvmvif->cab_queue = queue; 2096ced19f26SSara Sharon } else if (!fw_has_api(&mvm->fw->ucode_capa, 2097fc07bd8cSSara Sharon IWL_UCODE_TLV_API_STA_TYPE)) 2098310181ecSSara Sharon iwl_mvm_enable_txq(mvm, vif->cab_queue, vif->cab_queue, 0, 2099310181ecSSara Sharon &cfg, timeout); 210026d6c16bSSara Sharon 210126d6c16bSSara Sharon return 0; 210226d6c16bSSara Sharon } 210326d6c16bSSara Sharon 210426d6c16bSSara Sharon /* 210526d6c16bSSara Sharon * Send the FW a request to remove the station from it's internal data 210626d6c16bSSara Sharon * structures, and in addition remove it from the local data structure. 210726d6c16bSSara Sharon */ 210826d6c16bSSara Sharon int iwl_mvm_rm_mcast_sta(struct iwl_mvm *mvm, struct ieee80211_vif *vif) 210926d6c16bSSara Sharon { 211026d6c16bSSara Sharon struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 211126d6c16bSSara Sharon int ret; 211226d6c16bSSara Sharon 211326d6c16bSSara Sharon lockdep_assert_held(&mvm->mutex); 211426d6c16bSSara Sharon 2115d49394a1SSara Sharon iwl_mvm_flush_sta(mvm, &mvmvif->mcast_sta, true, 0); 2116d49394a1SSara Sharon 2117e2af3fabSSara Sharon iwl_mvm_disable_txq(mvm, mvmvif->cab_queue, vif->cab_queue, 211826d6c16bSSara Sharon IWL_MAX_TID_COUNT, 0); 211926d6c16bSSara Sharon 212026d6c16bSSara Sharon ret = iwl_mvm_rm_sta_common(mvm, mvmvif->mcast_sta.sta_id); 212126d6c16bSSara Sharon if (ret) 212226d6c16bSSara Sharon IWL_WARN(mvm, "Failed sending remove station\n"); 212326d6c16bSSara Sharon 212426d6c16bSSara Sharon return ret; 212526d6c16bSSara Sharon } 212626d6c16bSSara Sharon 2127e705c121SKalle Valo #define IWL_MAX_RX_BA_SESSIONS 16 2128e705c121SKalle Valo 2129b915c101SSara Sharon static void iwl_mvm_sync_rxq_del_ba(struct iwl_mvm *mvm, u8 baid) 213010b2b201SSara Sharon { 2131b915c101SSara Sharon struct iwl_mvm_delba_notif notif = { 2132b915c101SSara Sharon .metadata.type = IWL_MVM_RXQ_NOTIF_DEL_BA, 2133b915c101SSara Sharon .metadata.sync = 1, 2134b915c101SSara Sharon .delba.baid = baid, 2135b915c101SSara Sharon }; 2136b915c101SSara Sharon iwl_mvm_sync_rx_queues_internal(mvm, (void *)¬if, sizeof(notif)); 213710b2b201SSara Sharon }; 213810b2b201SSara Sharon 2139b915c101SSara Sharon static void iwl_mvm_free_reorder(struct iwl_mvm *mvm, 2140b915c101SSara Sharon struct iwl_mvm_baid_data *data) 2141b915c101SSara Sharon { 2142b915c101SSara Sharon int i; 2143b915c101SSara Sharon 2144b915c101SSara Sharon iwl_mvm_sync_rxq_del_ba(mvm, data->baid); 2145b915c101SSara Sharon 2146b915c101SSara Sharon for (i = 0; i < mvm->trans->num_rx_queues; i++) { 2147b915c101SSara Sharon int j; 2148b915c101SSara Sharon struct iwl_mvm_reorder_buffer *reorder_buf = 2149b915c101SSara Sharon &data->reorder_buf[i]; 2150dfdddd92SJohannes Berg struct iwl_mvm_reorder_buf_entry *entries = 2151dfdddd92SJohannes Berg &data->entries[i * data->entries_per_queue]; 2152b915c101SSara Sharon 21530690405fSSara Sharon spin_lock_bh(&reorder_buf->lock); 21540690405fSSara Sharon if (likely(!reorder_buf->num_stored)) { 21550690405fSSara Sharon spin_unlock_bh(&reorder_buf->lock); 2156b915c101SSara Sharon continue; 21570690405fSSara Sharon } 2158b915c101SSara Sharon 2159b915c101SSara Sharon /* 2160b915c101SSara Sharon * This shouldn't happen in regular DELBA since the internal 2161b915c101SSara Sharon * delBA notification should trigger a release of all frames in 2162b915c101SSara Sharon * the reorder buffer. 2163b915c101SSara Sharon */ 2164b915c101SSara Sharon WARN_ON(1); 2165b915c101SSara Sharon 2166b915c101SSara Sharon for (j = 0; j < reorder_buf->buf_size; j++) 2167dfdddd92SJohannes Berg __skb_queue_purge(&entries[j].e.frames); 21680690405fSSara Sharon /* 21690690405fSSara Sharon * Prevent timer re-arm. This prevents a very far fetched case 21700690405fSSara Sharon * where we timed out on the notification. There may be prior 21710690405fSSara Sharon * RX frames pending in the RX queue before the notification 21720690405fSSara Sharon * that might get processed between now and the actual deletion 21730690405fSSara Sharon * and we would re-arm the timer although we are deleting the 21740690405fSSara Sharon * reorder buffer. 21750690405fSSara Sharon */ 21760690405fSSara Sharon reorder_buf->removed = true; 21770690405fSSara Sharon spin_unlock_bh(&reorder_buf->lock); 21780690405fSSara Sharon del_timer_sync(&reorder_buf->reorder_timer); 2179b915c101SSara Sharon } 2180b915c101SSara Sharon } 2181b915c101SSara Sharon 2182b915c101SSara Sharon static void iwl_mvm_init_reorder_buffer(struct iwl_mvm *mvm, 2183b915c101SSara Sharon struct iwl_mvm_baid_data *data, 2184b915c101SSara Sharon u16 ssn, u8 buf_size) 2185b915c101SSara Sharon { 2186b915c101SSara Sharon int i; 2187b915c101SSara Sharon 2188b915c101SSara Sharon for (i = 0; i < mvm->trans->num_rx_queues; i++) { 2189b915c101SSara Sharon struct iwl_mvm_reorder_buffer *reorder_buf = 2190b915c101SSara Sharon &data->reorder_buf[i]; 2191dfdddd92SJohannes Berg struct iwl_mvm_reorder_buf_entry *entries = 2192dfdddd92SJohannes Berg &data->entries[i * data->entries_per_queue]; 2193b915c101SSara Sharon int j; 2194b915c101SSara Sharon 2195b915c101SSara Sharon reorder_buf->num_stored = 0; 2196b915c101SSara Sharon reorder_buf->head_sn = ssn; 2197b915c101SSara Sharon reorder_buf->buf_size = buf_size; 21980690405fSSara Sharon /* rx reorder timer */ 21998cef5344SKees Cook timer_setup(&reorder_buf->reorder_timer, 22008cef5344SKees Cook iwl_mvm_reorder_timer_expired, 0); 22010690405fSSara Sharon spin_lock_init(&reorder_buf->lock); 22020690405fSSara Sharon reorder_buf->mvm = mvm; 2203b915c101SSara Sharon reorder_buf->queue = i; 22045d43eab6SSara Sharon reorder_buf->valid = false; 2205b915c101SSara Sharon for (j = 0; j < reorder_buf->buf_size; j++) 2206dfdddd92SJohannes Berg __skb_queue_head_init(&entries[j].e.frames); 2207b915c101SSara Sharon } 220810b2b201SSara Sharon } 220910b2b201SSara Sharon 2210e705c121SKalle Valo int iwl_mvm_sta_rx_agg(struct iwl_mvm *mvm, struct ieee80211_sta *sta, 221110b2b201SSara Sharon int tid, u16 ssn, bool start, u8 buf_size, u16 timeout) 2212e705c121SKalle Valo { 2213e705c121SKalle Valo struct iwl_mvm_sta *mvm_sta = iwl_mvm_sta_from_mac80211(sta); 2214e705c121SKalle Valo struct iwl_mvm_add_sta_cmd cmd = {}; 221510b2b201SSara Sharon struct iwl_mvm_baid_data *baid_data = NULL; 2216e705c121SKalle Valo int ret; 2217e705c121SKalle Valo u32 status; 2218e705c121SKalle Valo 2219e705c121SKalle Valo lockdep_assert_held(&mvm->mutex); 2220e705c121SKalle Valo 2221e705c121SKalle Valo if (start && mvm->rx_ba_sessions >= IWL_MAX_RX_BA_SESSIONS) { 2222e705c121SKalle Valo IWL_WARN(mvm, "Not enough RX BA SESSIONS\n"); 2223e705c121SKalle Valo return -ENOSPC; 2224e705c121SKalle Valo } 2225e705c121SKalle Valo 222610b2b201SSara Sharon if (iwl_mvm_has_new_rx_api(mvm) && start) { 2227dfdddd92SJohannes Berg u16 reorder_buf_size = buf_size * sizeof(baid_data->entries[0]); 2228dfdddd92SJohannes Berg 2229dfdddd92SJohannes Berg /* sparse doesn't like the __align() so don't check */ 2230dfdddd92SJohannes Berg #ifndef __CHECKER__ 2231dfdddd92SJohannes Berg /* 2232dfdddd92SJohannes Berg * The division below will be OK if either the cache line size 2233dfdddd92SJohannes Berg * can be divided by the entry size (ALIGN will round up) or if 2234dfdddd92SJohannes Berg * if the entry size can be divided by the cache line size, in 2235dfdddd92SJohannes Berg * which case the ALIGN() will do nothing. 2236dfdddd92SJohannes Berg */ 2237dfdddd92SJohannes Berg BUILD_BUG_ON(SMP_CACHE_BYTES % sizeof(baid_data->entries[0]) && 2238dfdddd92SJohannes Berg sizeof(baid_data->entries[0]) % SMP_CACHE_BYTES); 2239dfdddd92SJohannes Berg #endif 2240dfdddd92SJohannes Berg 2241dfdddd92SJohannes Berg /* 2242dfdddd92SJohannes Berg * Upward align the reorder buffer size to fill an entire cache 2243dfdddd92SJohannes Berg * line for each queue, to avoid sharing cache lines between 2244dfdddd92SJohannes Berg * different queues. 2245dfdddd92SJohannes Berg */ 2246dfdddd92SJohannes Berg reorder_buf_size = ALIGN(reorder_buf_size, SMP_CACHE_BYTES); 2247dfdddd92SJohannes Berg 224810b2b201SSara Sharon /* 224910b2b201SSara Sharon * Allocate here so if allocation fails we can bail out early 225010b2b201SSara Sharon * before starting the BA session in the firmware 225110b2b201SSara Sharon */ 2252b915c101SSara Sharon baid_data = kzalloc(sizeof(*baid_data) + 2253b915c101SSara Sharon mvm->trans->num_rx_queues * 2254dfdddd92SJohannes Berg reorder_buf_size, 2255b915c101SSara Sharon GFP_KERNEL); 225610b2b201SSara Sharon if (!baid_data) 225710b2b201SSara Sharon return -ENOMEM; 2258dfdddd92SJohannes Berg 2259dfdddd92SJohannes Berg /* 2260dfdddd92SJohannes Berg * This division is why we need the above BUILD_BUG_ON(), 2261dfdddd92SJohannes Berg * if that doesn't hold then this will not be right. 2262dfdddd92SJohannes Berg */ 2263dfdddd92SJohannes Berg baid_data->entries_per_queue = 2264dfdddd92SJohannes Berg reorder_buf_size / sizeof(baid_data->entries[0]); 226510b2b201SSara Sharon } 226610b2b201SSara Sharon 2267e705c121SKalle Valo cmd.mac_id_n_color = cpu_to_le32(mvm_sta->mac_id_n_color); 2268e705c121SKalle Valo cmd.sta_id = mvm_sta->sta_id; 2269e705c121SKalle Valo cmd.add_modify = STA_MODE_MODIFY; 2270e705c121SKalle Valo if (start) { 2271e705c121SKalle Valo cmd.add_immediate_ba_tid = (u8) tid; 2272e705c121SKalle Valo cmd.add_immediate_ba_ssn = cpu_to_le16(ssn); 2273854c5705SSara Sharon cmd.rx_ba_window = cpu_to_le16((u16)buf_size); 2274e705c121SKalle Valo } else { 2275e705c121SKalle Valo cmd.remove_immediate_ba_tid = (u8) tid; 2276e705c121SKalle Valo } 2277e705c121SKalle Valo cmd.modify_mask = start ? STA_MODIFY_ADD_BA_TID : 2278e705c121SKalle Valo STA_MODIFY_REMOVE_BA_TID; 2279e705c121SKalle Valo 2280e705c121SKalle Valo status = ADD_STA_SUCCESS; 2281854c5705SSara Sharon ret = iwl_mvm_send_cmd_pdu_status(mvm, ADD_STA, 2282854c5705SSara Sharon iwl_mvm_add_sta_cmd_size(mvm), 2283e705c121SKalle Valo &cmd, &status); 2284e705c121SKalle Valo if (ret) 228510b2b201SSara Sharon goto out_free; 2286e705c121SKalle Valo 2287837c4da9SSara Sharon switch (status & IWL_ADD_STA_STATUS_MASK) { 2288e705c121SKalle Valo case ADD_STA_SUCCESS: 228935263a03SSara Sharon IWL_DEBUG_HT(mvm, "RX BA Session %sed in fw\n", 2290e705c121SKalle Valo start ? "start" : "stopp"); 2291e705c121SKalle Valo break; 2292e705c121SKalle Valo case ADD_STA_IMMEDIATE_BA_FAILURE: 2293e705c121SKalle Valo IWL_WARN(mvm, "RX BA Session refused by fw\n"); 2294e705c121SKalle Valo ret = -ENOSPC; 2295e705c121SKalle Valo break; 2296e705c121SKalle Valo default: 2297e705c121SKalle Valo ret = -EIO; 2298e705c121SKalle Valo IWL_ERR(mvm, "RX BA Session failed %sing, status 0x%x\n", 2299e705c121SKalle Valo start ? "start" : "stopp", status); 2300e705c121SKalle Valo break; 2301e705c121SKalle Valo } 2302e705c121SKalle Valo 230310b2b201SSara Sharon if (ret) 230410b2b201SSara Sharon goto out_free; 230510b2b201SSara Sharon 230610b2b201SSara Sharon if (start) { 230710b2b201SSara Sharon u8 baid; 230810b2b201SSara Sharon 2309e705c121SKalle Valo mvm->rx_ba_sessions++; 231010b2b201SSara Sharon 231110b2b201SSara Sharon if (!iwl_mvm_has_new_rx_api(mvm)) 231210b2b201SSara Sharon return 0; 231310b2b201SSara Sharon 231410b2b201SSara Sharon if (WARN_ON(!(status & IWL_ADD_STA_BAID_VALID_MASK))) { 231510b2b201SSara Sharon ret = -EINVAL; 231610b2b201SSara Sharon goto out_free; 231710b2b201SSara Sharon } 231810b2b201SSara Sharon baid = (u8)((status & IWL_ADD_STA_BAID_MASK) >> 231910b2b201SSara Sharon IWL_ADD_STA_BAID_SHIFT); 232010b2b201SSara Sharon baid_data->baid = baid; 232110b2b201SSara Sharon baid_data->timeout = timeout; 232210b2b201SSara Sharon baid_data->last_rx = jiffies; 23238cef5344SKees Cook baid_data->rcu_ptr = &mvm->baid_map[baid]; 23248cef5344SKees Cook timer_setup(&baid_data->session_timer, 23258cef5344SKees Cook iwl_mvm_rx_agg_session_expired, 0); 232610b2b201SSara Sharon baid_data->mvm = mvm; 232710b2b201SSara Sharon baid_data->tid = tid; 232810b2b201SSara Sharon baid_data->sta_id = mvm_sta->sta_id; 232910b2b201SSara Sharon 233010b2b201SSara Sharon mvm_sta->tid_to_baid[tid] = baid; 233110b2b201SSara Sharon if (timeout) 233210b2b201SSara Sharon mod_timer(&baid_data->session_timer, 233310b2b201SSara Sharon TU_TO_EXP_TIME(timeout * 2)); 233410b2b201SSara Sharon 23353f1c4c58SSara Sharon iwl_mvm_init_reorder_buffer(mvm, baid_data, ssn, buf_size); 233610b2b201SSara Sharon /* 233710b2b201SSara Sharon * protect the BA data with RCU to cover a case where our 233810b2b201SSara Sharon * internal RX sync mechanism will timeout (not that it's 233910b2b201SSara Sharon * supposed to happen) and we will free the session data while 234010b2b201SSara Sharon * RX is being processed in parallel 234110b2b201SSara Sharon */ 234235263a03SSara Sharon IWL_DEBUG_HT(mvm, "Sta %d(%d) is assigned to BAID %d\n", 234335263a03SSara Sharon mvm_sta->sta_id, tid, baid); 234410b2b201SSara Sharon WARN_ON(rcu_access_pointer(mvm->baid_map[baid])); 234510b2b201SSara Sharon rcu_assign_pointer(mvm->baid_map[baid], baid_data); 234660dec523SSara Sharon } else { 234710b2b201SSara Sharon u8 baid = mvm_sta->tid_to_baid[tid]; 234810b2b201SSara Sharon 234960dec523SSara Sharon if (mvm->rx_ba_sessions > 0) 2350e705c121SKalle Valo /* check that restart flow didn't zero the counter */ 2351e705c121SKalle Valo mvm->rx_ba_sessions--; 235210b2b201SSara Sharon if (!iwl_mvm_has_new_rx_api(mvm)) 235310b2b201SSara Sharon return 0; 2354e705c121SKalle Valo 235510b2b201SSara Sharon if (WARN_ON(baid == IWL_RX_REORDER_DATA_INVALID_BAID)) 235610b2b201SSara Sharon return -EINVAL; 235710b2b201SSara Sharon 235810b2b201SSara Sharon baid_data = rcu_access_pointer(mvm->baid_map[baid]); 235910b2b201SSara Sharon if (WARN_ON(!baid_data)) 236010b2b201SSara Sharon return -EINVAL; 236110b2b201SSara Sharon 236210b2b201SSara Sharon /* synchronize all rx queues so we can safely delete */ 2363b915c101SSara Sharon iwl_mvm_free_reorder(mvm, baid_data); 236410b2b201SSara Sharon del_timer_sync(&baid_data->session_timer); 236510b2b201SSara Sharon RCU_INIT_POINTER(mvm->baid_map[baid], NULL); 236610b2b201SSara Sharon kfree_rcu(baid_data, rcu_head); 236735263a03SSara Sharon IWL_DEBUG_HT(mvm, "BAID %d is free\n", baid); 236810b2b201SSara Sharon } 236910b2b201SSara Sharon return 0; 237010b2b201SSara Sharon 237110b2b201SSara Sharon out_free: 237210b2b201SSara Sharon kfree(baid_data); 2373e705c121SKalle Valo return ret; 2374e705c121SKalle Valo } 2375e705c121SKalle Valo 23769794c64fSLiad Kaufman int iwl_mvm_sta_tx_agg(struct iwl_mvm *mvm, struct ieee80211_sta *sta, 2377e705c121SKalle Valo int tid, u8 queue, bool start) 2378e705c121SKalle Valo { 2379e705c121SKalle Valo struct iwl_mvm_sta *mvm_sta = iwl_mvm_sta_from_mac80211(sta); 2380e705c121SKalle Valo struct iwl_mvm_add_sta_cmd cmd = {}; 2381e705c121SKalle Valo int ret; 2382e705c121SKalle Valo u32 status; 2383e705c121SKalle Valo 2384e705c121SKalle Valo lockdep_assert_held(&mvm->mutex); 2385e705c121SKalle Valo 2386e705c121SKalle Valo if (start) { 2387e705c121SKalle Valo mvm_sta->tfd_queue_msk |= BIT(queue); 2388e705c121SKalle Valo mvm_sta->tid_disable_agg &= ~BIT(tid); 2389e705c121SKalle Valo } else { 2390cf961e16SLiad Kaufman /* In DQA-mode the queue isn't removed on agg termination */ 2391e705c121SKalle Valo mvm_sta->tid_disable_agg |= BIT(tid); 2392e705c121SKalle Valo } 2393e705c121SKalle Valo 2394e705c121SKalle Valo cmd.mac_id_n_color = cpu_to_le32(mvm_sta->mac_id_n_color); 2395e705c121SKalle Valo cmd.sta_id = mvm_sta->sta_id; 2396e705c121SKalle Valo cmd.add_modify = STA_MODE_MODIFY; 2397bb49701bSSara Sharon if (!iwl_mvm_has_new_tx_api(mvm)) 2398bb49701bSSara Sharon cmd.modify_mask = STA_MODIFY_QUEUES; 2399bb49701bSSara Sharon cmd.modify_mask |= STA_MODIFY_TID_DISABLE_TX; 2400e705c121SKalle Valo cmd.tfd_queue_msk = cpu_to_le32(mvm_sta->tfd_queue_msk); 2401e705c121SKalle Valo cmd.tid_disable_tx = cpu_to_le16(mvm_sta->tid_disable_agg); 2402e705c121SKalle Valo 2403e705c121SKalle Valo status = ADD_STA_SUCCESS; 2404854c5705SSara Sharon ret = iwl_mvm_send_cmd_pdu_status(mvm, ADD_STA, 2405854c5705SSara Sharon iwl_mvm_add_sta_cmd_size(mvm), 2406e705c121SKalle Valo &cmd, &status); 2407e705c121SKalle Valo if (ret) 2408e705c121SKalle Valo return ret; 2409e705c121SKalle Valo 2410837c4da9SSara Sharon switch (status & IWL_ADD_STA_STATUS_MASK) { 2411e705c121SKalle Valo case ADD_STA_SUCCESS: 2412e705c121SKalle Valo break; 2413e705c121SKalle Valo default: 2414e705c121SKalle Valo ret = -EIO; 2415e705c121SKalle Valo IWL_ERR(mvm, "TX BA Session failed %sing, status 0x%x\n", 2416e705c121SKalle Valo start ? "start" : "stopp", status); 2417e705c121SKalle Valo break; 2418e705c121SKalle Valo } 2419e705c121SKalle Valo 2420e705c121SKalle Valo return ret; 2421e705c121SKalle Valo } 2422e705c121SKalle Valo 2423e705c121SKalle Valo const u8 tid_to_mac80211_ac[] = { 2424e705c121SKalle Valo IEEE80211_AC_BE, 2425e705c121SKalle Valo IEEE80211_AC_BK, 2426e705c121SKalle Valo IEEE80211_AC_BK, 2427e705c121SKalle Valo IEEE80211_AC_BE, 2428e705c121SKalle Valo IEEE80211_AC_VI, 2429e705c121SKalle Valo IEEE80211_AC_VI, 2430e705c121SKalle Valo IEEE80211_AC_VO, 2431e705c121SKalle Valo IEEE80211_AC_VO, 24329794c64fSLiad Kaufman IEEE80211_AC_VO, /* We treat MGMT as TID 8, which is set as AC_VO */ 2433e705c121SKalle Valo }; 2434e705c121SKalle Valo 2435e705c121SKalle Valo static const u8 tid_to_ucode_ac[] = { 2436e705c121SKalle Valo AC_BE, 2437e705c121SKalle Valo AC_BK, 2438e705c121SKalle Valo AC_BK, 2439e705c121SKalle Valo AC_BE, 2440e705c121SKalle Valo AC_VI, 2441e705c121SKalle Valo AC_VI, 2442e705c121SKalle Valo AC_VO, 2443e705c121SKalle Valo AC_VO, 2444e705c121SKalle Valo }; 2445e705c121SKalle Valo 2446e705c121SKalle Valo int iwl_mvm_sta_tx_agg_start(struct iwl_mvm *mvm, struct ieee80211_vif *vif, 2447e705c121SKalle Valo struct ieee80211_sta *sta, u16 tid, u16 *ssn) 2448e705c121SKalle Valo { 2449e705c121SKalle Valo struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta); 2450e705c121SKalle Valo struct iwl_mvm_tid_data *tid_data; 2451dd32162dSLiad Kaufman u16 normalized_ssn; 2452e705c121SKalle Valo int txq_id; 2453e705c121SKalle Valo int ret; 2454e705c121SKalle Valo 2455e705c121SKalle Valo if (WARN_ON_ONCE(tid >= IWL_MAX_TID_COUNT)) 2456e705c121SKalle Valo return -EINVAL; 2457e705c121SKalle Valo 2458bd800e41SNaftali Goldstein if (mvmsta->tid_data[tid].state != IWL_AGG_QUEUED && 2459bd800e41SNaftali Goldstein mvmsta->tid_data[tid].state != IWL_AGG_OFF) { 2460bd800e41SNaftali Goldstein IWL_ERR(mvm, 2461bd800e41SNaftali Goldstein "Start AGG when state is not IWL_AGG_QUEUED or IWL_AGG_OFF %d!\n", 2462e705c121SKalle Valo mvmsta->tid_data[tid].state); 2463e705c121SKalle Valo return -ENXIO; 2464e705c121SKalle Valo } 2465e705c121SKalle Valo 2466e705c121SKalle Valo lockdep_assert_held(&mvm->mutex); 2467e705c121SKalle Valo 2468e705c121SKalle Valo spin_lock_bh(&mvmsta->lock); 2469e705c121SKalle Valo 2470e705c121SKalle Valo /* possible race condition - we entered D0i3 while starting agg */ 2471e705c121SKalle Valo if (test_bit(IWL_MVM_STATUS_IN_D0I3, &mvm->status)) { 2472e705c121SKalle Valo spin_unlock_bh(&mvmsta->lock); 2473e705c121SKalle Valo IWL_ERR(mvm, "Entered D0i3 while starting Tx agg\n"); 2474e705c121SKalle Valo return -EIO; 2475e705c121SKalle Valo } 2476e705c121SKalle Valo 24779f9af3d7SLiad Kaufman spin_lock(&mvm->queue_info_lock); 2478e705c121SKalle Valo 2479cf961e16SLiad Kaufman /* 2480cf961e16SLiad Kaufman * Note the possible cases: 2481cf961e16SLiad Kaufman * 1. In DQA mode with an enabled TXQ - TXQ needs to become agg'ed 2482cf961e16SLiad Kaufman * 2. Non-DQA mode: the TXQ hasn't yet been enabled, so find a free 2483cf961e16SLiad Kaufman * one and mark it as reserved 2484cf961e16SLiad Kaufman * 3. In DQA mode, but no traffic yet on this TID: same treatment as in 2485cf961e16SLiad Kaufman * non-DQA mode, since the TXQ hasn't yet been allocated 248634e10860SSara Sharon * Don't support case 3 for new TX path as it is not expected to happen 248734e10860SSara Sharon * and aggregation will be offloaded soon anyway 2488cf961e16SLiad Kaufman */ 2489cf961e16SLiad Kaufman txq_id = mvmsta->tid_data[tid].txq_id; 249034e10860SSara Sharon if (iwl_mvm_has_new_tx_api(mvm)) { 249134e10860SSara Sharon if (txq_id == IWL_MVM_INVALID_QUEUE) { 249234e10860SSara Sharon ret = -ENXIO; 249334e10860SSara Sharon goto release_locks; 249434e10860SSara Sharon } 2495c8f54701SJohannes Berg } else if (unlikely(mvm->queue_info[txq_id].status == 249634e10860SSara Sharon IWL_MVM_QUEUE_SHARED)) { 24979f9af3d7SLiad Kaufman ret = -ENXIO; 24989f9af3d7SLiad Kaufman IWL_DEBUG_TX_QUEUES(mvm, 24999f9af3d7SLiad Kaufman "Can't start tid %d agg on shared queue!\n", 25009f9af3d7SLiad Kaufman tid); 25019f9af3d7SLiad Kaufman goto release_locks; 2502c8f54701SJohannes Berg } else if (mvm->queue_info[txq_id].status != IWL_MVM_QUEUE_READY) { 25039794c64fSLiad Kaufman txq_id = iwl_mvm_find_free_queue(mvm, mvmsta->sta_id, 2504c8f54701SJohannes Berg IWL_MVM_DQA_MIN_DATA_QUEUE, 2505c8f54701SJohannes Berg IWL_MVM_DQA_MAX_DATA_QUEUE); 2506e705c121SKalle Valo if (txq_id < 0) { 2507e705c121SKalle Valo ret = txq_id; 2508e705c121SKalle Valo IWL_ERR(mvm, "Failed to allocate agg queue\n"); 2509e705c121SKalle Valo goto release_locks; 2510e705c121SKalle Valo } 251101796ff2SSara Sharon /* 251201796ff2SSara Sharon * TXQ shouldn't be in inactive mode for non-DQA, so getting 251301796ff2SSara Sharon * an inactive queue from iwl_mvm_find_free_queue() is 251401796ff2SSara Sharon * certainly a bug 251501796ff2SSara Sharon */ 251601796ff2SSara Sharon WARN_ON(mvm->queue_info[txq_id].status == 251701796ff2SSara Sharon IWL_MVM_QUEUE_INACTIVE); 2518cf961e16SLiad Kaufman 2519cf961e16SLiad Kaufman /* TXQ hasn't yet been enabled, so mark it only as reserved */ 2520cf961e16SLiad Kaufman mvm->queue_info[txq_id].status = IWL_MVM_QUEUE_RESERVED; 2521cf961e16SLiad Kaufman } 25229f9af3d7SLiad Kaufman 25239f9af3d7SLiad Kaufman spin_unlock(&mvm->queue_info_lock); 2524e705c121SKalle Valo 2525cf961e16SLiad Kaufman IWL_DEBUG_TX_QUEUES(mvm, 2526cf961e16SLiad Kaufman "AGG for tid %d will be on queue #%d\n", 2527cf961e16SLiad Kaufman tid, txq_id); 2528cf961e16SLiad Kaufman 2529e705c121SKalle Valo tid_data = &mvmsta->tid_data[tid]; 2530e705c121SKalle Valo tid_data->ssn = IEEE80211_SEQ_TO_SN(tid_data->seq_number); 2531e705c121SKalle Valo tid_data->txq_id = txq_id; 2532e705c121SKalle Valo *ssn = tid_data->ssn; 2533e705c121SKalle Valo 2534e705c121SKalle Valo IWL_DEBUG_TX_QUEUES(mvm, 2535e705c121SKalle Valo "Start AGG: sta %d tid %d queue %d - ssn = %d, next_recl = %d\n", 2536e705c121SKalle Valo mvmsta->sta_id, tid, txq_id, tid_data->ssn, 2537e705c121SKalle Valo tid_data->next_reclaimed); 2538e705c121SKalle Valo 2539dd32162dSLiad Kaufman /* 25402f7a3863SLuca Coelho * In 22000 HW, the next_reclaimed index is only 8 bit, so we'll need 2541dd32162dSLiad Kaufman * to align the wrap around of ssn so we compare relevant values. 2542dd32162dSLiad Kaufman */ 2543dd32162dSLiad Kaufman normalized_ssn = tid_data->ssn; 2544dd32162dSLiad Kaufman if (mvm->trans->cfg->gen2) 2545dd32162dSLiad Kaufman normalized_ssn &= 0xff; 2546dd32162dSLiad Kaufman 2547dd32162dSLiad Kaufman if (normalized_ssn == tid_data->next_reclaimed) { 2548e705c121SKalle Valo tid_data->state = IWL_AGG_STARTING; 2549e705c121SKalle Valo ieee80211_start_tx_ba_cb_irqsafe(vif, sta->addr, tid); 2550e705c121SKalle Valo } else { 2551e705c121SKalle Valo tid_data->state = IWL_EMPTYING_HW_QUEUE_ADDBA; 2552e705c121SKalle Valo } 2553e705c121SKalle Valo 2554e705c121SKalle Valo ret = 0; 25559f9af3d7SLiad Kaufman goto out; 2556e705c121SKalle Valo 2557e705c121SKalle Valo release_locks: 25589f9af3d7SLiad Kaufman spin_unlock(&mvm->queue_info_lock); 25599f9af3d7SLiad Kaufman out: 2560e705c121SKalle Valo spin_unlock_bh(&mvmsta->lock); 2561e705c121SKalle Valo 2562e705c121SKalle Valo return ret; 2563e705c121SKalle Valo } 2564e705c121SKalle Valo 2565e705c121SKalle Valo int iwl_mvm_sta_tx_agg_oper(struct iwl_mvm *mvm, struct ieee80211_vif *vif, 2566bb81bb68SEmmanuel Grumbach struct ieee80211_sta *sta, u16 tid, u8 buf_size, 2567bb81bb68SEmmanuel Grumbach bool amsdu) 2568e705c121SKalle Valo { 2569e705c121SKalle Valo struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta); 2570e705c121SKalle Valo struct iwl_mvm_tid_data *tid_data = &mvmsta->tid_data[tid]; 2571e705c121SKalle Valo unsigned int wdg_timeout = 2572e705c121SKalle Valo iwl_mvm_get_wd_timeout(mvm, vif, sta->tdls, false); 2573eea76c36SEmmanuel Grumbach int queue, ret; 2574cf961e16SLiad Kaufman bool alloc_queue = true; 25759f9af3d7SLiad Kaufman enum iwl_mvm_queue_status queue_status; 2576e705c121SKalle Valo u16 ssn; 2577e705c121SKalle Valo 2578eea76c36SEmmanuel Grumbach struct iwl_trans_txq_scd_cfg cfg = { 2579eea76c36SEmmanuel Grumbach .sta_id = mvmsta->sta_id, 2580eea76c36SEmmanuel Grumbach .tid = tid, 2581eea76c36SEmmanuel Grumbach .frame_limit = buf_size, 2582eea76c36SEmmanuel Grumbach .aggregate = true, 2583eea76c36SEmmanuel Grumbach }; 2584eea76c36SEmmanuel Grumbach 2585ecaf71deSGregory Greenman /* 2586ecaf71deSGregory Greenman * When FW supports TLC_OFFLOAD, it also implements Tx aggregation 2587ecaf71deSGregory Greenman * manager, so this function should never be called in this case. 2588ecaf71deSGregory Greenman */ 25894243edb4SEmmanuel Grumbach if (WARN_ON_ONCE(iwl_mvm_has_tlc_offload(mvm))) 2590ecaf71deSGregory Greenman return -EINVAL; 2591ecaf71deSGregory Greenman 2592e705c121SKalle Valo BUILD_BUG_ON((sizeof(mvmsta->agg_tids) * BITS_PER_BYTE) 2593e705c121SKalle Valo != IWL_MAX_TID_COUNT); 2594e705c121SKalle Valo 2595e705c121SKalle Valo spin_lock_bh(&mvmsta->lock); 2596e705c121SKalle Valo ssn = tid_data->ssn; 2597e705c121SKalle Valo queue = tid_data->txq_id; 2598e705c121SKalle Valo tid_data->state = IWL_AGG_ON; 2599e705c121SKalle Valo mvmsta->agg_tids |= BIT(tid); 2600e705c121SKalle Valo tid_data->ssn = 0xffff; 2601bb81bb68SEmmanuel Grumbach tid_data->amsdu_in_ampdu_allowed = amsdu; 2602e705c121SKalle Valo spin_unlock_bh(&mvmsta->lock); 2603e705c121SKalle Valo 260434e10860SSara Sharon if (iwl_mvm_has_new_tx_api(mvm)) { 260534e10860SSara Sharon /* 26060ec9257bSSara Sharon * If there is no queue for this tid, iwl_mvm_sta_tx_agg_start() 26070ec9257bSSara Sharon * would have failed, so if we are here there is no need to 26080ec9257bSSara Sharon * allocate a queue. 26090ec9257bSSara Sharon * However, if aggregation size is different than the default 26100ec9257bSSara Sharon * size, the scheduler should be reconfigured. 26110ec9257bSSara Sharon * We cannot do this with the new TX API, so return unsupported 26120ec9257bSSara Sharon * for now, until it will be offloaded to firmware.. 26130ec9257bSSara Sharon * Note that if SCD default value changes - this condition 26140ec9257bSSara Sharon * should be updated as well. 261534e10860SSara Sharon */ 26160ec9257bSSara Sharon if (buf_size < IWL_FRAME_LIMIT) 261734e10860SSara Sharon return -ENOTSUPP; 261834e10860SSara Sharon 261934e10860SSara Sharon ret = iwl_mvm_sta_tx_agg(mvm, sta, tid, queue, true); 262034e10860SSara Sharon if (ret) 262134e10860SSara Sharon return -EIO; 262234e10860SSara Sharon goto out; 262334e10860SSara Sharon } 262434e10860SSara Sharon 2625eea76c36SEmmanuel Grumbach cfg.fifo = iwl_mvm_ac_to_tx_fifo[tid_to_mac80211_ac[tid]]; 2626e705c121SKalle Valo 26279f9af3d7SLiad Kaufman spin_lock_bh(&mvm->queue_info_lock); 26289f9af3d7SLiad Kaufman queue_status = mvm->queue_info[queue].status; 26299f9af3d7SLiad Kaufman spin_unlock_bh(&mvm->queue_info_lock); 26309f9af3d7SLiad Kaufman 2631cf961e16SLiad Kaufman /* Maybe there is no need to even alloc a queue... */ 2632cf961e16SLiad Kaufman if (mvm->queue_info[queue].status == IWL_MVM_QUEUE_READY) 2633cf961e16SLiad Kaufman alloc_queue = false; 2634cf961e16SLiad Kaufman 2635cf961e16SLiad Kaufman /* 2636cf961e16SLiad Kaufman * Only reconfig the SCD for the queue if the window size has 2637cf961e16SLiad Kaufman * changed from current (become smaller) 2638cf961e16SLiad Kaufman */ 26390ec9257bSSara Sharon if (!alloc_queue && buf_size < IWL_FRAME_LIMIT) { 2640cf961e16SLiad Kaufman /* 2641cf961e16SLiad Kaufman * If reconfiguring an existing queue, it first must be 2642cf961e16SLiad Kaufman * drained 2643cf961e16SLiad Kaufman */ 2644a1a57877SSara Sharon ret = iwl_trans_wait_tx_queues_empty(mvm->trans, 2645cf961e16SLiad Kaufman BIT(queue)); 2646cf961e16SLiad Kaufman if (ret) { 2647cf961e16SLiad Kaufman IWL_ERR(mvm, 2648cf961e16SLiad Kaufman "Error draining queue before reconfig\n"); 2649cf961e16SLiad Kaufman return ret; 2650cf961e16SLiad Kaufman } 2651cf961e16SLiad Kaufman 2652cf961e16SLiad Kaufman ret = iwl_mvm_reconfig_scd(mvm, queue, cfg.fifo, 2653cf961e16SLiad Kaufman mvmsta->sta_id, tid, 2654cf961e16SLiad Kaufman buf_size, ssn); 2655cf961e16SLiad Kaufman if (ret) { 2656cf961e16SLiad Kaufman IWL_ERR(mvm, 2657cf961e16SLiad Kaufman "Error reconfiguring TXQ #%d\n", queue); 2658cf961e16SLiad Kaufman return ret; 2659cf961e16SLiad Kaufman } 2660cf961e16SLiad Kaufman } 2661cf961e16SLiad Kaufman 2662cf961e16SLiad Kaufman if (alloc_queue) 2663cf961e16SLiad Kaufman iwl_mvm_enable_txq(mvm, queue, 2664cf961e16SLiad Kaufman vif->hw_queue[tid_to_mac80211_ac[tid]], ssn, 2665cf961e16SLiad Kaufman &cfg, wdg_timeout); 2666e705c121SKalle Valo 26679f9af3d7SLiad Kaufman /* Send ADD_STA command to enable aggs only if the queue isn't shared */ 26689f9af3d7SLiad Kaufman if (queue_status != IWL_MVM_QUEUE_SHARED) { 2669e705c121SKalle Valo ret = iwl_mvm_sta_tx_agg(mvm, sta, tid, queue, true); 2670e705c121SKalle Valo if (ret) 2671e705c121SKalle Valo return -EIO; 26729f9af3d7SLiad Kaufman } 2673e705c121SKalle Valo 2674e705c121SKalle Valo /* No need to mark as reserved */ 2675e705c121SKalle Valo spin_lock_bh(&mvm->queue_info_lock); 2676cf961e16SLiad Kaufman mvm->queue_info[queue].status = IWL_MVM_QUEUE_READY; 2677e705c121SKalle Valo spin_unlock_bh(&mvm->queue_info_lock); 2678e705c121SKalle Valo 267934e10860SSara Sharon out: 2680e705c121SKalle Valo /* 2681e705c121SKalle Valo * Even though in theory the peer could have different 2682e705c121SKalle Valo * aggregation reorder buffer sizes for different sessions, 2683e705c121SKalle Valo * our ucode doesn't allow for that and has a global limit 2684e705c121SKalle Valo * for each station. Therefore, use the minimum of all the 2685e705c121SKalle Valo * aggregation sessions and our default value. 2686e705c121SKalle Valo */ 2687e705c121SKalle Valo mvmsta->max_agg_bufsize = 2688e705c121SKalle Valo min(mvmsta->max_agg_bufsize, buf_size); 2689ecaf71deSGregory Greenman mvmsta->lq_sta.rs_drv.lq.agg_frame_cnt_limit = mvmsta->max_agg_bufsize; 2690e705c121SKalle Valo 2691e705c121SKalle Valo IWL_DEBUG_HT(mvm, "Tx aggregation enabled on ra = %pM tid = %d\n", 2692e705c121SKalle Valo sta->addr, tid); 2693e705c121SKalle Valo 2694ecaf71deSGregory Greenman return iwl_mvm_send_lq_cmd(mvm, &mvmsta->lq_sta.rs_drv.lq, false); 2695e705c121SKalle Valo } 2696e705c121SKalle Valo 269734e10860SSara Sharon static void iwl_mvm_unreserve_agg_queue(struct iwl_mvm *mvm, 269834e10860SSara Sharon struct iwl_mvm_sta *mvmsta, 269934e10860SSara Sharon u16 txq_id) 270034e10860SSara Sharon { 270134e10860SSara Sharon if (iwl_mvm_has_new_tx_api(mvm)) 270234e10860SSara Sharon return; 270334e10860SSara Sharon 270434e10860SSara Sharon spin_lock_bh(&mvm->queue_info_lock); 270534e10860SSara Sharon /* 270634e10860SSara Sharon * The TXQ is marked as reserved only if no traffic came through yet 270734e10860SSara Sharon * This means no traffic has been sent on this TID (agg'd or not), so 270834e10860SSara Sharon * we no longer have use for the queue. Since it hasn't even been 270934e10860SSara Sharon * allocated through iwl_mvm_enable_txq, so we can just mark it back as 271034e10860SSara Sharon * free. 271134e10860SSara Sharon */ 271234e10860SSara Sharon if (mvm->queue_info[txq_id].status == IWL_MVM_QUEUE_RESERVED) 271334e10860SSara Sharon mvm->queue_info[txq_id].status = IWL_MVM_QUEUE_FREE; 271434e10860SSara Sharon 271534e10860SSara Sharon spin_unlock_bh(&mvm->queue_info_lock); 271634e10860SSara Sharon } 271734e10860SSara Sharon 2718e705c121SKalle Valo int iwl_mvm_sta_tx_agg_stop(struct iwl_mvm *mvm, struct ieee80211_vif *vif, 2719e705c121SKalle Valo struct ieee80211_sta *sta, u16 tid) 2720e705c121SKalle Valo { 2721e705c121SKalle Valo struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta); 2722e705c121SKalle Valo struct iwl_mvm_tid_data *tid_data = &mvmsta->tid_data[tid]; 2723e705c121SKalle Valo u16 txq_id; 2724e705c121SKalle Valo int err; 2725e705c121SKalle Valo 2726e705c121SKalle Valo /* 2727e705c121SKalle Valo * If mac80211 is cleaning its state, then say that we finished since 2728e705c121SKalle Valo * our state has been cleared anyway. 2729e705c121SKalle Valo */ 2730e705c121SKalle Valo if (test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status)) { 2731e705c121SKalle Valo ieee80211_stop_tx_ba_cb_irqsafe(vif, sta->addr, tid); 2732e705c121SKalle Valo return 0; 2733e705c121SKalle Valo } 2734e705c121SKalle Valo 2735e705c121SKalle Valo spin_lock_bh(&mvmsta->lock); 2736e705c121SKalle Valo 2737e705c121SKalle Valo txq_id = tid_data->txq_id; 2738e705c121SKalle Valo 2739e705c121SKalle Valo IWL_DEBUG_TX_QUEUES(mvm, "Stop AGG: sta %d tid %d q %d state %d\n", 2740e705c121SKalle Valo mvmsta->sta_id, tid, txq_id, tid_data->state); 2741e705c121SKalle Valo 2742e705c121SKalle Valo mvmsta->agg_tids &= ~BIT(tid); 2743e705c121SKalle Valo 274434e10860SSara Sharon iwl_mvm_unreserve_agg_queue(mvm, mvmsta, txq_id); 2745e705c121SKalle Valo 2746e705c121SKalle Valo switch (tid_data->state) { 2747e705c121SKalle Valo case IWL_AGG_ON: 2748e705c121SKalle Valo tid_data->ssn = IEEE80211_SEQ_TO_SN(tid_data->seq_number); 2749e705c121SKalle Valo 2750e705c121SKalle Valo IWL_DEBUG_TX_QUEUES(mvm, 2751e705c121SKalle Valo "ssn = %d, next_recl = %d\n", 2752e705c121SKalle Valo tid_data->ssn, tid_data->next_reclaimed); 2753e705c121SKalle Valo 2754e705c121SKalle Valo tid_data->ssn = 0xffff; 2755e705c121SKalle Valo tid_data->state = IWL_AGG_OFF; 2756e705c121SKalle Valo spin_unlock_bh(&mvmsta->lock); 2757e705c121SKalle Valo 2758e705c121SKalle Valo ieee80211_stop_tx_ba_cb_irqsafe(vif, sta->addr, tid); 2759e705c121SKalle Valo 2760e705c121SKalle Valo iwl_mvm_sta_tx_agg(mvm, sta, tid, txq_id, false); 2761e705c121SKalle Valo return 0; 2762e705c121SKalle Valo case IWL_AGG_STARTING: 2763e705c121SKalle Valo case IWL_EMPTYING_HW_QUEUE_ADDBA: 2764e705c121SKalle Valo /* 2765e705c121SKalle Valo * The agg session has been stopped before it was set up. This 2766e705c121SKalle Valo * can happen when the AddBA timer times out for example. 2767e705c121SKalle Valo */ 2768e705c121SKalle Valo 2769e705c121SKalle Valo /* No barriers since we are under mutex */ 2770e705c121SKalle Valo lockdep_assert_held(&mvm->mutex); 2771e705c121SKalle Valo 2772e705c121SKalle Valo ieee80211_stop_tx_ba_cb_irqsafe(vif, sta->addr, tid); 2773e705c121SKalle Valo tid_data->state = IWL_AGG_OFF; 2774e705c121SKalle Valo err = 0; 2775e705c121SKalle Valo break; 2776e705c121SKalle Valo default: 2777e705c121SKalle Valo IWL_ERR(mvm, 2778e705c121SKalle Valo "Stopping AGG while state not ON or starting for %d on %d (%d)\n", 2779e705c121SKalle Valo mvmsta->sta_id, tid, tid_data->state); 2780e705c121SKalle Valo IWL_ERR(mvm, 2781e705c121SKalle Valo "\ttid_data->txq_id = %d\n", tid_data->txq_id); 2782e705c121SKalle Valo err = -EINVAL; 2783e705c121SKalle Valo } 2784e705c121SKalle Valo 2785e705c121SKalle Valo spin_unlock_bh(&mvmsta->lock); 2786e705c121SKalle Valo 2787e705c121SKalle Valo return err; 2788e705c121SKalle Valo } 2789e705c121SKalle Valo 2790e705c121SKalle Valo int iwl_mvm_sta_tx_agg_flush(struct iwl_mvm *mvm, struct ieee80211_vif *vif, 2791e705c121SKalle Valo struct ieee80211_sta *sta, u16 tid) 2792e705c121SKalle Valo { 2793e705c121SKalle Valo struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta); 2794e705c121SKalle Valo struct iwl_mvm_tid_data *tid_data = &mvmsta->tid_data[tid]; 2795e705c121SKalle Valo u16 txq_id; 2796e705c121SKalle Valo enum iwl_mvm_agg_state old_state; 2797e705c121SKalle Valo 2798e705c121SKalle Valo /* 2799e705c121SKalle Valo * First set the agg state to OFF to avoid calling 2800e705c121SKalle Valo * ieee80211_stop_tx_ba_cb in iwl_mvm_check_ratid_empty. 2801e705c121SKalle Valo */ 2802e705c121SKalle Valo spin_lock_bh(&mvmsta->lock); 2803e705c121SKalle Valo txq_id = tid_data->txq_id; 2804e705c121SKalle Valo IWL_DEBUG_TX_QUEUES(mvm, "Flush AGG: sta %d tid %d q %d state %d\n", 2805e705c121SKalle Valo mvmsta->sta_id, tid, txq_id, tid_data->state); 2806e705c121SKalle Valo old_state = tid_data->state; 2807e705c121SKalle Valo tid_data->state = IWL_AGG_OFF; 2808e705c121SKalle Valo mvmsta->agg_tids &= ~BIT(tid); 2809e705c121SKalle Valo spin_unlock_bh(&mvmsta->lock); 2810e705c121SKalle Valo 281134e10860SSara Sharon iwl_mvm_unreserve_agg_queue(mvm, mvmsta, txq_id); 2812e705c121SKalle Valo 2813e705c121SKalle Valo if (old_state >= IWL_AGG_ON) { 2814e705c121SKalle Valo iwl_mvm_drain_sta(mvm, mvmsta, true); 2815d167e81aSMordechai Goodstein 2816d167e81aSMordechai Goodstein if (iwl_mvm_has_new_tx_api(mvm)) { 2817d167e81aSMordechai Goodstein if (iwl_mvm_flush_sta_tids(mvm, mvmsta->sta_id, 2818d167e81aSMordechai Goodstein BIT(tid), 0)) 2819d167e81aSMordechai Goodstein IWL_ERR(mvm, "Couldn't flush the AGG queue\n"); 2820d167e81aSMordechai Goodstein iwl_trans_wait_txq_empty(mvm->trans, txq_id); 2821d167e81aSMordechai Goodstein } else { 2822e705c121SKalle Valo if (iwl_mvm_flush_tx_path(mvm, BIT(txq_id), 0)) 2823e705c121SKalle Valo IWL_ERR(mvm, "Couldn't flush the AGG queue\n"); 28240b90964aSSara Sharon iwl_trans_wait_tx_queues_empty(mvm->trans, BIT(txq_id)); 2825d167e81aSMordechai Goodstein } 2826d6d517b7SSara Sharon 2827e705c121SKalle Valo iwl_mvm_drain_sta(mvm, mvmsta, false); 2828e705c121SKalle Valo 2829e705c121SKalle Valo iwl_mvm_sta_tx_agg(mvm, sta, tid, txq_id, false); 2830e705c121SKalle Valo } 2831e705c121SKalle Valo 2832e705c121SKalle Valo return 0; 2833e705c121SKalle Valo } 2834e705c121SKalle Valo 2835e705c121SKalle Valo static int iwl_mvm_set_fw_key_idx(struct iwl_mvm *mvm) 2836e705c121SKalle Valo { 2837e705c121SKalle Valo int i, max = -1, max_offs = -1; 2838e705c121SKalle Valo 2839e705c121SKalle Valo lockdep_assert_held(&mvm->mutex); 2840e705c121SKalle Valo 2841e705c121SKalle Valo /* Pick the unused key offset with the highest 'deleted' 2842e705c121SKalle Valo * counter. Every time a key is deleted, all the counters 2843e705c121SKalle Valo * are incremented and the one that was just deleted is 2844e705c121SKalle Valo * reset to zero. Thus, the highest counter is the one 2845e705c121SKalle Valo * that was deleted longest ago. Pick that one. 2846e705c121SKalle Valo */ 2847e705c121SKalle Valo for (i = 0; i < STA_KEY_MAX_NUM; i++) { 2848e705c121SKalle Valo if (test_bit(i, mvm->fw_key_table)) 2849e705c121SKalle Valo continue; 2850e705c121SKalle Valo if (mvm->fw_key_deleted[i] > max) { 2851e705c121SKalle Valo max = mvm->fw_key_deleted[i]; 2852e705c121SKalle Valo max_offs = i; 2853e705c121SKalle Valo } 2854e705c121SKalle Valo } 2855e705c121SKalle Valo 2856e705c121SKalle Valo if (max_offs < 0) 2857e705c121SKalle Valo return STA_KEY_IDX_INVALID; 2858e705c121SKalle Valo 2859e705c121SKalle Valo return max_offs; 2860e705c121SKalle Valo } 2861e705c121SKalle Valo 28625f7a1847SJohannes Berg static struct iwl_mvm_sta *iwl_mvm_get_key_sta(struct iwl_mvm *mvm, 28634615fd15SEmmanuel Grumbach struct ieee80211_vif *vif, 2864e705c121SKalle Valo struct ieee80211_sta *sta) 2865e705c121SKalle Valo { 2866e705c121SKalle Valo struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 2867e705c121SKalle Valo 28685f7a1847SJohannes Berg if (sta) 28695f7a1847SJohannes Berg return iwl_mvm_sta_from_mac80211(sta); 2870e705c121SKalle Valo 2871e705c121SKalle Valo /* 2872e705c121SKalle Valo * The device expects GTKs for station interfaces to be 2873e705c121SKalle Valo * installed as GTKs for the AP station. If we have no 2874e705c121SKalle Valo * station ID, then use AP's station ID. 2875e705c121SKalle Valo */ 2876e705c121SKalle Valo if (vif->type == NL80211_IFTYPE_STATION && 28770ae98812SSara Sharon mvmvif->ap_sta_id != IWL_MVM_INVALID_STA) { 28784615fd15SEmmanuel Grumbach u8 sta_id = mvmvif->ap_sta_id; 28794615fd15SEmmanuel Grumbach 28807d6a1ab6SEmmanuel Grumbach sta = rcu_dereference_check(mvm->fw_id_to_mac_id[sta_id], 28817d6a1ab6SEmmanuel Grumbach lockdep_is_held(&mvm->mutex)); 28827d6a1ab6SEmmanuel Grumbach 28834615fd15SEmmanuel Grumbach /* 28844615fd15SEmmanuel Grumbach * It is possible that the 'sta' parameter is NULL, 28854615fd15SEmmanuel Grumbach * for example when a GTK is removed - the sta_id will then 28864615fd15SEmmanuel Grumbach * be the AP ID, and no station was passed by mac80211. 28874615fd15SEmmanuel Grumbach */ 28887d6a1ab6SEmmanuel Grumbach if (IS_ERR_OR_NULL(sta)) 28897d6a1ab6SEmmanuel Grumbach return NULL; 28907d6a1ab6SEmmanuel Grumbach 28917d6a1ab6SEmmanuel Grumbach return iwl_mvm_sta_from_mac80211(sta); 28924615fd15SEmmanuel Grumbach } 2893e705c121SKalle Valo 28945f7a1847SJohannes Berg return NULL; 2895e705c121SKalle Valo } 2896e705c121SKalle Valo 2897e705c121SKalle Valo static int iwl_mvm_send_sta_key(struct iwl_mvm *mvm, 289885aeb58cSDavid Spinadel u32 sta_id, 289945c458b4SSara Sharon struct ieee80211_key_conf *key, bool mcast, 29004615fd15SEmmanuel Grumbach u32 tkip_iv32, u16 *tkip_p1k, u32 cmd_flags, 29014615fd15SEmmanuel Grumbach u8 key_offset) 2902e705c121SKalle Valo { 290345c458b4SSara Sharon union { 290445c458b4SSara Sharon struct iwl_mvm_add_sta_key_cmd_v1 cmd_v1; 290545c458b4SSara Sharon struct iwl_mvm_add_sta_key_cmd cmd; 290645c458b4SSara Sharon } u = {}; 2907e705c121SKalle Valo __le16 key_flags; 2908e705c121SKalle Valo int ret; 2909e705c121SKalle Valo u32 status; 2910e705c121SKalle Valo u16 keyidx; 291145c458b4SSara Sharon u64 pn = 0; 291245c458b4SSara Sharon int i, size; 291345c458b4SSara Sharon bool new_api = fw_has_api(&mvm->fw->ucode_capa, 291445c458b4SSara Sharon IWL_UCODE_TLV_API_TKIP_MIC_KEYS); 2915e705c121SKalle Valo 291685aeb58cSDavid Spinadel if (sta_id == IWL_MVM_INVALID_STA) 291785aeb58cSDavid Spinadel return -EINVAL; 291885aeb58cSDavid Spinadel 291945c458b4SSara Sharon keyidx = (key->keyidx << STA_KEY_FLG_KEYID_POS) & 2920e705c121SKalle Valo STA_KEY_FLG_KEYID_MSK; 2921e705c121SKalle Valo key_flags = cpu_to_le16(keyidx); 2922e705c121SKalle Valo key_flags |= cpu_to_le16(STA_KEY_FLG_WEP_KEY_MAP); 2923e705c121SKalle Valo 292445c458b4SSara Sharon switch (key->cipher) { 2925e705c121SKalle Valo case WLAN_CIPHER_SUITE_TKIP: 2926e705c121SKalle Valo key_flags |= cpu_to_le16(STA_KEY_FLG_TKIP); 292745c458b4SSara Sharon if (new_api) { 292845c458b4SSara Sharon memcpy((void *)&u.cmd.tx_mic_key, 292945c458b4SSara Sharon &key->key[NL80211_TKIP_DATA_OFFSET_TX_MIC_KEY], 293045c458b4SSara Sharon IWL_MIC_KEY_SIZE); 293145c458b4SSara Sharon 293245c458b4SSara Sharon memcpy((void *)&u.cmd.rx_mic_key, 293345c458b4SSara Sharon &key->key[NL80211_TKIP_DATA_OFFSET_RX_MIC_KEY], 293445c458b4SSara Sharon IWL_MIC_KEY_SIZE); 293545c458b4SSara Sharon pn = atomic64_read(&key->tx_pn); 293645c458b4SSara Sharon 293745c458b4SSara Sharon } else { 293845c458b4SSara Sharon u.cmd_v1.tkip_rx_tsc_byte2 = tkip_iv32; 2939e705c121SKalle Valo for (i = 0; i < 5; i++) 294045c458b4SSara Sharon u.cmd_v1.tkip_rx_ttak[i] = 294145c458b4SSara Sharon cpu_to_le16(tkip_p1k[i]); 294245c458b4SSara Sharon } 294345c458b4SSara Sharon memcpy(u.cmd.common.key, key->key, key->keylen); 2944e705c121SKalle Valo break; 2945e705c121SKalle Valo case WLAN_CIPHER_SUITE_CCMP: 2946e705c121SKalle Valo key_flags |= cpu_to_le16(STA_KEY_FLG_CCM); 294745c458b4SSara Sharon memcpy(u.cmd.common.key, key->key, key->keylen); 294845c458b4SSara Sharon if (new_api) 294945c458b4SSara Sharon pn = atomic64_read(&key->tx_pn); 2950e705c121SKalle Valo break; 2951e705c121SKalle Valo case WLAN_CIPHER_SUITE_WEP104: 2952e705c121SKalle Valo key_flags |= cpu_to_le16(STA_KEY_FLG_WEP_13BYTES); 2953e705c121SKalle Valo /* fall through */ 2954e705c121SKalle Valo case WLAN_CIPHER_SUITE_WEP40: 2955e705c121SKalle Valo key_flags |= cpu_to_le16(STA_KEY_FLG_WEP); 295645c458b4SSara Sharon memcpy(u.cmd.common.key + 3, key->key, key->keylen); 2957e705c121SKalle Valo break; 29582a53d166SAyala Beker case WLAN_CIPHER_SUITE_GCMP_256: 29592a53d166SAyala Beker key_flags |= cpu_to_le16(STA_KEY_FLG_KEY_32BYTES); 29602a53d166SAyala Beker /* fall through */ 29612a53d166SAyala Beker case WLAN_CIPHER_SUITE_GCMP: 29622a53d166SAyala Beker key_flags |= cpu_to_le16(STA_KEY_FLG_GCMP); 296345c458b4SSara Sharon memcpy(u.cmd.common.key, key->key, key->keylen); 296445c458b4SSara Sharon if (new_api) 296545c458b4SSara Sharon pn = atomic64_read(&key->tx_pn); 29662a53d166SAyala Beker break; 2967e705c121SKalle Valo default: 2968e705c121SKalle Valo key_flags |= cpu_to_le16(STA_KEY_FLG_EXT); 296945c458b4SSara Sharon memcpy(u.cmd.common.key, key->key, key->keylen); 2970e705c121SKalle Valo } 2971e705c121SKalle Valo 2972e705c121SKalle Valo if (mcast) 2973e705c121SKalle Valo key_flags |= cpu_to_le16(STA_KEY_MULTICAST); 2974e705c121SKalle Valo 297545c458b4SSara Sharon u.cmd.common.key_offset = key_offset; 297645c458b4SSara Sharon u.cmd.common.key_flags = key_flags; 297785aeb58cSDavid Spinadel u.cmd.common.sta_id = sta_id; 297845c458b4SSara Sharon 297945c458b4SSara Sharon if (new_api) { 298045c458b4SSara Sharon u.cmd.transmit_seq_cnt = cpu_to_le64(pn); 298145c458b4SSara Sharon size = sizeof(u.cmd); 298245c458b4SSara Sharon } else { 298345c458b4SSara Sharon size = sizeof(u.cmd_v1); 298445c458b4SSara Sharon } 2985e705c121SKalle Valo 2986e705c121SKalle Valo status = ADD_STA_SUCCESS; 2987e705c121SKalle Valo if (cmd_flags & CMD_ASYNC) 298845c458b4SSara Sharon ret = iwl_mvm_send_cmd_pdu(mvm, ADD_STA_KEY, CMD_ASYNC, size, 298945c458b4SSara Sharon &u.cmd); 2990e705c121SKalle Valo else 299145c458b4SSara Sharon ret = iwl_mvm_send_cmd_pdu_status(mvm, ADD_STA_KEY, size, 299245c458b4SSara Sharon &u.cmd, &status); 2993e705c121SKalle Valo 2994e705c121SKalle Valo switch (status) { 2995e705c121SKalle Valo case ADD_STA_SUCCESS: 2996e705c121SKalle Valo IWL_DEBUG_WEP(mvm, "MODIFY_STA: set dynamic key passed\n"); 2997e705c121SKalle Valo break; 2998e705c121SKalle Valo default: 2999e705c121SKalle Valo ret = -EIO; 3000e705c121SKalle Valo IWL_ERR(mvm, "MODIFY_STA: set dynamic key failed\n"); 3001e705c121SKalle Valo break; 3002e705c121SKalle Valo } 3003e705c121SKalle Valo 3004e705c121SKalle Valo return ret; 3005e705c121SKalle Valo } 3006e705c121SKalle Valo 3007e705c121SKalle Valo static int iwl_mvm_send_sta_igtk(struct iwl_mvm *mvm, 3008e705c121SKalle Valo struct ieee80211_key_conf *keyconf, 3009e705c121SKalle Valo u8 sta_id, bool remove_key) 3010e705c121SKalle Valo { 3011e705c121SKalle Valo struct iwl_mvm_mgmt_mcast_key_cmd igtk_cmd = {}; 3012e705c121SKalle Valo 3013e705c121SKalle Valo /* verify the key details match the required command's expectations */ 30148e160ab8SAyala Beker if (WARN_ON((keyconf->flags & IEEE80211_KEY_FLAG_PAIRWISE) || 30158e160ab8SAyala Beker (keyconf->keyidx != 4 && keyconf->keyidx != 5) || 30168e160ab8SAyala Beker (keyconf->cipher != WLAN_CIPHER_SUITE_AES_CMAC && 30178e160ab8SAyala Beker keyconf->cipher != WLAN_CIPHER_SUITE_BIP_GMAC_128 && 30188e160ab8SAyala Beker keyconf->cipher != WLAN_CIPHER_SUITE_BIP_GMAC_256))) 30198e160ab8SAyala Beker return -EINVAL; 30208e160ab8SAyala Beker 30218e160ab8SAyala Beker if (WARN_ON(!iwl_mvm_has_new_rx_api(mvm) && 30228e160ab8SAyala Beker keyconf->cipher != WLAN_CIPHER_SUITE_AES_CMAC)) 3023e705c121SKalle Valo return -EINVAL; 3024e705c121SKalle Valo 3025e705c121SKalle Valo igtk_cmd.key_id = cpu_to_le32(keyconf->keyidx); 3026e705c121SKalle Valo igtk_cmd.sta_id = cpu_to_le32(sta_id); 3027e705c121SKalle Valo 3028e705c121SKalle Valo if (remove_key) { 3029e705c121SKalle Valo igtk_cmd.ctrl_flags |= cpu_to_le32(STA_KEY_NOT_VALID); 3030e705c121SKalle Valo } else { 3031e705c121SKalle Valo struct ieee80211_key_seq seq; 3032e705c121SKalle Valo const u8 *pn; 3033e705c121SKalle Valo 3034aa950524SAyala Beker switch (keyconf->cipher) { 3035aa950524SAyala Beker case WLAN_CIPHER_SUITE_AES_CMAC: 3036aa950524SAyala Beker igtk_cmd.ctrl_flags |= cpu_to_le32(STA_KEY_FLG_CCM); 3037aa950524SAyala Beker break; 30388e160ab8SAyala Beker case WLAN_CIPHER_SUITE_BIP_GMAC_128: 30398e160ab8SAyala Beker case WLAN_CIPHER_SUITE_BIP_GMAC_256: 30408e160ab8SAyala Beker igtk_cmd.ctrl_flags |= cpu_to_le32(STA_KEY_FLG_GCMP); 30418e160ab8SAyala Beker break; 3042aa950524SAyala Beker default: 3043aa950524SAyala Beker return -EINVAL; 3044aa950524SAyala Beker } 3045aa950524SAyala Beker 30468e160ab8SAyala Beker memcpy(igtk_cmd.igtk, keyconf->key, keyconf->keylen); 30478e160ab8SAyala Beker if (keyconf->cipher == WLAN_CIPHER_SUITE_BIP_GMAC_256) 30488e160ab8SAyala Beker igtk_cmd.ctrl_flags |= 30498e160ab8SAyala Beker cpu_to_le32(STA_KEY_FLG_KEY_32BYTES); 3050e705c121SKalle Valo ieee80211_get_key_rx_seq(keyconf, 0, &seq); 3051e705c121SKalle Valo pn = seq.aes_cmac.pn; 3052e705c121SKalle Valo igtk_cmd.receive_seq_cnt = cpu_to_le64(((u64) pn[5] << 0) | 3053e705c121SKalle Valo ((u64) pn[4] << 8) | 3054e705c121SKalle Valo ((u64) pn[3] << 16) | 3055e705c121SKalle Valo ((u64) pn[2] << 24) | 3056e705c121SKalle Valo ((u64) pn[1] << 32) | 3057e705c121SKalle Valo ((u64) pn[0] << 40)); 3058e705c121SKalle Valo } 3059e705c121SKalle Valo 3060e705c121SKalle Valo IWL_DEBUG_INFO(mvm, "%s igtk for sta %u\n", 3061e705c121SKalle Valo remove_key ? "removing" : "installing", 3062e705c121SKalle Valo igtk_cmd.sta_id); 3063e705c121SKalle Valo 30648e160ab8SAyala Beker if (!iwl_mvm_has_new_rx_api(mvm)) { 30658e160ab8SAyala Beker struct iwl_mvm_mgmt_mcast_key_cmd_v1 igtk_cmd_v1 = { 30668e160ab8SAyala Beker .ctrl_flags = igtk_cmd.ctrl_flags, 30678e160ab8SAyala Beker .key_id = igtk_cmd.key_id, 30688e160ab8SAyala Beker .sta_id = igtk_cmd.sta_id, 30698e160ab8SAyala Beker .receive_seq_cnt = igtk_cmd.receive_seq_cnt 30708e160ab8SAyala Beker }; 30718e160ab8SAyala Beker 30728e160ab8SAyala Beker memcpy(igtk_cmd_v1.igtk, igtk_cmd.igtk, 30738e160ab8SAyala Beker ARRAY_SIZE(igtk_cmd_v1.igtk)); 30748e160ab8SAyala Beker return iwl_mvm_send_cmd_pdu(mvm, MGMT_MCAST_KEY, 0, 30758e160ab8SAyala Beker sizeof(igtk_cmd_v1), &igtk_cmd_v1); 30768e160ab8SAyala Beker } 3077e705c121SKalle Valo return iwl_mvm_send_cmd_pdu(mvm, MGMT_MCAST_KEY, 0, 3078e705c121SKalle Valo sizeof(igtk_cmd), &igtk_cmd); 3079e705c121SKalle Valo } 3080e705c121SKalle Valo 3081e705c121SKalle Valo 3082e705c121SKalle Valo static inline u8 *iwl_mvm_get_mac_addr(struct iwl_mvm *mvm, 3083e705c121SKalle Valo struct ieee80211_vif *vif, 3084e705c121SKalle Valo struct ieee80211_sta *sta) 3085e705c121SKalle Valo { 3086e705c121SKalle Valo struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 3087e705c121SKalle Valo 3088e705c121SKalle Valo if (sta) 3089e705c121SKalle Valo return sta->addr; 3090e705c121SKalle Valo 3091e705c121SKalle Valo if (vif->type == NL80211_IFTYPE_STATION && 30920ae98812SSara Sharon mvmvif->ap_sta_id != IWL_MVM_INVALID_STA) { 3093e705c121SKalle Valo u8 sta_id = mvmvif->ap_sta_id; 3094e705c121SKalle Valo sta = rcu_dereference_protected(mvm->fw_id_to_mac_id[sta_id], 3095e705c121SKalle Valo lockdep_is_held(&mvm->mutex)); 3096e705c121SKalle Valo return sta->addr; 3097e705c121SKalle Valo } 3098e705c121SKalle Valo 3099e705c121SKalle Valo 3100e705c121SKalle Valo return NULL; 3101e705c121SKalle Valo } 3102e705c121SKalle Valo 3103e705c121SKalle Valo static int __iwl_mvm_set_sta_key(struct iwl_mvm *mvm, 3104e705c121SKalle Valo struct ieee80211_vif *vif, 3105e705c121SKalle Valo struct ieee80211_sta *sta, 3106e705c121SKalle Valo struct ieee80211_key_conf *keyconf, 31074615fd15SEmmanuel Grumbach u8 key_offset, 3108e705c121SKalle Valo bool mcast) 3109e705c121SKalle Valo { 3110e705c121SKalle Valo int ret; 3111e705c121SKalle Valo const u8 *addr; 3112e705c121SKalle Valo struct ieee80211_key_seq seq; 3113e705c121SKalle Valo u16 p1k[5]; 311485aeb58cSDavid Spinadel u32 sta_id; 311585aeb58cSDavid Spinadel 311685aeb58cSDavid Spinadel if (sta) { 311785aeb58cSDavid Spinadel struct iwl_mvm_sta *mvm_sta = iwl_mvm_sta_from_mac80211(sta); 311885aeb58cSDavid Spinadel 311985aeb58cSDavid Spinadel sta_id = mvm_sta->sta_id; 312085aeb58cSDavid Spinadel } else if (vif->type == NL80211_IFTYPE_AP && 312185aeb58cSDavid Spinadel !(keyconf->flags & IEEE80211_KEY_FLAG_PAIRWISE)) { 312285aeb58cSDavid Spinadel struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 312385aeb58cSDavid Spinadel 312485aeb58cSDavid Spinadel sta_id = mvmvif->mcast_sta.sta_id; 312585aeb58cSDavid Spinadel } else { 312685aeb58cSDavid Spinadel IWL_ERR(mvm, "Failed to find station id\n"); 312785aeb58cSDavid Spinadel return -EINVAL; 312885aeb58cSDavid Spinadel } 3129e705c121SKalle Valo 3130e705c121SKalle Valo switch (keyconf->cipher) { 3131e705c121SKalle Valo case WLAN_CIPHER_SUITE_TKIP: 313285aeb58cSDavid Spinadel if (vif->type == NL80211_IFTYPE_AP) { 313385aeb58cSDavid Spinadel ret = -EINVAL; 313485aeb58cSDavid Spinadel break; 313585aeb58cSDavid Spinadel } 3136e705c121SKalle Valo addr = iwl_mvm_get_mac_addr(mvm, vif, sta); 3137e705c121SKalle Valo /* get phase 1 key from mac80211 */ 3138e705c121SKalle Valo ieee80211_get_key_rx_seq(keyconf, 0, &seq); 3139e705c121SKalle Valo ieee80211_get_tkip_rx_p1k(keyconf, addr, seq.tkip.iv32, p1k); 314085aeb58cSDavid Spinadel ret = iwl_mvm_send_sta_key(mvm, sta_id, keyconf, mcast, 31414615fd15SEmmanuel Grumbach seq.tkip.iv32, p1k, 0, key_offset); 3142e705c121SKalle Valo break; 3143e705c121SKalle Valo case WLAN_CIPHER_SUITE_CCMP: 3144e705c121SKalle Valo case WLAN_CIPHER_SUITE_WEP40: 3145e705c121SKalle Valo case WLAN_CIPHER_SUITE_WEP104: 31462a53d166SAyala Beker case WLAN_CIPHER_SUITE_GCMP: 31472a53d166SAyala Beker case WLAN_CIPHER_SUITE_GCMP_256: 314885aeb58cSDavid Spinadel ret = iwl_mvm_send_sta_key(mvm, sta_id, keyconf, mcast, 31494615fd15SEmmanuel Grumbach 0, NULL, 0, key_offset); 3150e705c121SKalle Valo break; 3151e705c121SKalle Valo default: 315285aeb58cSDavid Spinadel ret = iwl_mvm_send_sta_key(mvm, sta_id, keyconf, mcast, 31534615fd15SEmmanuel Grumbach 0, NULL, 0, key_offset); 3154e705c121SKalle Valo } 3155e705c121SKalle Valo 3156e705c121SKalle Valo return ret; 3157e705c121SKalle Valo } 3158e705c121SKalle Valo 3159e705c121SKalle Valo static int __iwl_mvm_remove_sta_key(struct iwl_mvm *mvm, u8 sta_id, 3160e705c121SKalle Valo struct ieee80211_key_conf *keyconf, 3161e705c121SKalle Valo bool mcast) 3162e705c121SKalle Valo { 316345c458b4SSara Sharon union { 316445c458b4SSara Sharon struct iwl_mvm_add_sta_key_cmd_v1 cmd_v1; 316545c458b4SSara Sharon struct iwl_mvm_add_sta_key_cmd cmd; 316645c458b4SSara Sharon } u = {}; 316745c458b4SSara Sharon bool new_api = fw_has_api(&mvm->fw->ucode_capa, 316845c458b4SSara Sharon IWL_UCODE_TLV_API_TKIP_MIC_KEYS); 3169e705c121SKalle Valo __le16 key_flags; 317045c458b4SSara Sharon int ret, size; 3171e705c121SKalle Valo u32 status; 3172e705c121SKalle Valo 3173e4f13ad0SSara Sharon /* This is a valid situation for GTK removal */ 317485aeb58cSDavid Spinadel if (sta_id == IWL_MVM_INVALID_STA) 3175e4f13ad0SSara Sharon return 0; 317685aeb58cSDavid Spinadel 3177e705c121SKalle Valo key_flags = cpu_to_le16((keyconf->keyidx << STA_KEY_FLG_KEYID_POS) & 3178e705c121SKalle Valo STA_KEY_FLG_KEYID_MSK); 3179e705c121SKalle Valo key_flags |= cpu_to_le16(STA_KEY_FLG_NO_ENC | STA_KEY_FLG_WEP_KEY_MAP); 3180e705c121SKalle Valo key_flags |= cpu_to_le16(STA_KEY_NOT_VALID); 3181e705c121SKalle Valo 3182e705c121SKalle Valo if (mcast) 3183e705c121SKalle Valo key_flags |= cpu_to_le16(STA_KEY_MULTICAST); 3184e705c121SKalle Valo 318545c458b4SSara Sharon /* 318645c458b4SSara Sharon * The fields assigned here are in the same location at the start 318745c458b4SSara Sharon * of the command, so we can do this union trick. 318845c458b4SSara Sharon */ 318945c458b4SSara Sharon u.cmd.common.key_flags = key_flags; 319045c458b4SSara Sharon u.cmd.common.key_offset = keyconf->hw_key_idx; 319145c458b4SSara Sharon u.cmd.common.sta_id = sta_id; 319245c458b4SSara Sharon 319345c458b4SSara Sharon size = new_api ? sizeof(u.cmd) : sizeof(u.cmd_v1); 3194e705c121SKalle Valo 3195e705c121SKalle Valo status = ADD_STA_SUCCESS; 319645c458b4SSara Sharon ret = iwl_mvm_send_cmd_pdu_status(mvm, ADD_STA_KEY, size, &u.cmd, 319745c458b4SSara Sharon &status); 3198e705c121SKalle Valo 3199e705c121SKalle Valo switch (status) { 3200e705c121SKalle Valo case ADD_STA_SUCCESS: 3201e705c121SKalle Valo IWL_DEBUG_WEP(mvm, "MODIFY_STA: remove sta key passed\n"); 3202e705c121SKalle Valo break; 3203e705c121SKalle Valo default: 3204e705c121SKalle Valo ret = -EIO; 3205e705c121SKalle Valo IWL_ERR(mvm, "MODIFY_STA: remove sta key failed\n"); 3206e705c121SKalle Valo break; 3207e705c121SKalle Valo } 3208e705c121SKalle Valo 3209e705c121SKalle Valo return ret; 3210e705c121SKalle Valo } 3211e705c121SKalle Valo 3212e705c121SKalle Valo int iwl_mvm_set_sta_key(struct iwl_mvm *mvm, 3213e705c121SKalle Valo struct ieee80211_vif *vif, 3214e705c121SKalle Valo struct ieee80211_sta *sta, 3215e705c121SKalle Valo struct ieee80211_key_conf *keyconf, 32164615fd15SEmmanuel Grumbach u8 key_offset) 3217e705c121SKalle Valo { 3218e705c121SKalle Valo bool mcast = !(keyconf->flags & IEEE80211_KEY_FLAG_PAIRWISE); 32195f7a1847SJohannes Berg struct iwl_mvm_sta *mvm_sta; 322085aeb58cSDavid Spinadel u8 sta_id = IWL_MVM_INVALID_STA; 3221e705c121SKalle Valo int ret; 3222e705c121SKalle Valo static const u8 __maybe_unused zero_addr[ETH_ALEN] = {0}; 3223e705c121SKalle Valo 3224e705c121SKalle Valo lockdep_assert_held(&mvm->mutex); 3225e705c121SKalle Valo 322685aeb58cSDavid Spinadel if (vif->type != NL80211_IFTYPE_AP || 322785aeb58cSDavid Spinadel keyconf->flags & IEEE80211_KEY_FLAG_PAIRWISE) { 3228e705c121SKalle Valo /* Get the station id from the mvm local station table */ 32295f7a1847SJohannes Berg mvm_sta = iwl_mvm_get_key_sta(mvm, vif, sta); 32305f7a1847SJohannes Berg if (!mvm_sta) { 32315f7a1847SJohannes Berg IWL_ERR(mvm, "Failed to find station\n"); 3232e705c121SKalle Valo return -EINVAL; 3233e705c121SKalle Valo } 32345f7a1847SJohannes Berg sta_id = mvm_sta->sta_id; 3235e705c121SKalle Valo 32368e160ab8SAyala Beker if (keyconf->cipher == WLAN_CIPHER_SUITE_AES_CMAC || 32378e160ab8SAyala Beker keyconf->cipher == WLAN_CIPHER_SUITE_BIP_GMAC_128 || 32388e160ab8SAyala Beker keyconf->cipher == WLAN_CIPHER_SUITE_BIP_GMAC_256) { 323985aeb58cSDavid Spinadel ret = iwl_mvm_send_sta_igtk(mvm, keyconf, sta_id, 324085aeb58cSDavid Spinadel false); 3241e705c121SKalle Valo goto end; 3242e705c121SKalle Valo } 3243e705c121SKalle Valo 3244e705c121SKalle Valo /* 3245e705c121SKalle Valo * It is possible that the 'sta' parameter is NULL, and thus 324685aeb58cSDavid Spinadel * there is a need to retrieve the sta from the local station 324785aeb58cSDavid Spinadel * table. 3248e705c121SKalle Valo */ 3249e705c121SKalle Valo if (!sta) { 325085aeb58cSDavid Spinadel sta = rcu_dereference_protected( 325185aeb58cSDavid Spinadel mvm->fw_id_to_mac_id[sta_id], 3252e705c121SKalle Valo lockdep_is_held(&mvm->mutex)); 3253e705c121SKalle Valo if (IS_ERR_OR_NULL(sta)) { 3254e705c121SKalle Valo IWL_ERR(mvm, "Invalid station id\n"); 3255e705c121SKalle Valo return -EINVAL; 3256e705c121SKalle Valo } 3257e705c121SKalle Valo } 3258e705c121SKalle Valo 3259e705c121SKalle Valo if (WARN_ON_ONCE(iwl_mvm_sta_from_mac80211(sta)->vif != vif)) 3260e705c121SKalle Valo return -EINVAL; 326185aeb58cSDavid Spinadel } 3262e705c121SKalle Valo 32634615fd15SEmmanuel Grumbach /* If the key_offset is not pre-assigned, we need to find a 32644615fd15SEmmanuel Grumbach * new offset to use. In normal cases, the offset is not 32654615fd15SEmmanuel Grumbach * pre-assigned, but during HW_RESTART we want to reuse the 32664615fd15SEmmanuel Grumbach * same indices, so we pass them when this function is called. 32674615fd15SEmmanuel Grumbach * 32684615fd15SEmmanuel Grumbach * In D3 entry, we need to hardcoded the indices (because the 32694615fd15SEmmanuel Grumbach * firmware hardcodes the PTK offset to 0). In this case, we 32704615fd15SEmmanuel Grumbach * need to make sure we don't overwrite the hw_key_idx in the 32714615fd15SEmmanuel Grumbach * keyconf structure, because otherwise we cannot configure 32724615fd15SEmmanuel Grumbach * the original ones back when resuming. 3273e705c121SKalle Valo */ 32744615fd15SEmmanuel Grumbach if (key_offset == STA_KEY_IDX_INVALID) { 32754615fd15SEmmanuel Grumbach key_offset = iwl_mvm_set_fw_key_idx(mvm); 32764615fd15SEmmanuel Grumbach if (key_offset == STA_KEY_IDX_INVALID) 3277e705c121SKalle Valo return -ENOSPC; 32784615fd15SEmmanuel Grumbach keyconf->hw_key_idx = key_offset; 3279e705c121SKalle Valo } 3280e705c121SKalle Valo 32814615fd15SEmmanuel Grumbach ret = __iwl_mvm_set_sta_key(mvm, vif, sta, keyconf, key_offset, mcast); 32829c3deeb5SLuca Coelho if (ret) 3283e705c121SKalle Valo goto end; 3284e705c121SKalle Valo 3285e705c121SKalle Valo /* 3286e705c121SKalle Valo * For WEP, the same key is used for multicast and unicast. Upload it 3287e705c121SKalle Valo * again, using the same key offset, and now pointing the other one 3288e705c121SKalle Valo * to the same key slot (offset). 3289e705c121SKalle Valo * If this fails, remove the original as well. 3290e705c121SKalle Valo */ 329185aeb58cSDavid Spinadel if ((keyconf->cipher == WLAN_CIPHER_SUITE_WEP40 || 329285aeb58cSDavid Spinadel keyconf->cipher == WLAN_CIPHER_SUITE_WEP104) && 329385aeb58cSDavid Spinadel sta) { 32944615fd15SEmmanuel Grumbach ret = __iwl_mvm_set_sta_key(mvm, vif, sta, keyconf, 32954615fd15SEmmanuel Grumbach key_offset, !mcast); 3296e705c121SKalle Valo if (ret) { 3297e705c121SKalle Valo __iwl_mvm_remove_sta_key(mvm, sta_id, keyconf, mcast); 32989c3deeb5SLuca Coelho goto end; 3299e705c121SKalle Valo } 3300e705c121SKalle Valo } 3301e705c121SKalle Valo 33029c3deeb5SLuca Coelho __set_bit(key_offset, mvm->fw_key_table); 33039c3deeb5SLuca Coelho 3304e705c121SKalle Valo end: 3305e705c121SKalle Valo IWL_DEBUG_WEP(mvm, "key: cipher=%x len=%d idx=%d sta=%pM ret=%d\n", 3306e705c121SKalle Valo keyconf->cipher, keyconf->keylen, keyconf->keyidx, 3307e705c121SKalle Valo sta ? sta->addr : zero_addr, ret); 3308e705c121SKalle Valo return ret; 3309e705c121SKalle Valo } 3310e705c121SKalle Valo 3311e705c121SKalle Valo int iwl_mvm_remove_sta_key(struct iwl_mvm *mvm, 3312e705c121SKalle Valo struct ieee80211_vif *vif, 3313e705c121SKalle Valo struct ieee80211_sta *sta, 3314e705c121SKalle Valo struct ieee80211_key_conf *keyconf) 3315e705c121SKalle Valo { 3316e705c121SKalle Valo bool mcast = !(keyconf->flags & IEEE80211_KEY_FLAG_PAIRWISE); 33175f7a1847SJohannes Berg struct iwl_mvm_sta *mvm_sta; 33180ae98812SSara Sharon u8 sta_id = IWL_MVM_INVALID_STA; 3319e705c121SKalle Valo int ret, i; 3320e705c121SKalle Valo 3321e705c121SKalle Valo lockdep_assert_held(&mvm->mutex); 3322e705c121SKalle Valo 33235f7a1847SJohannes Berg /* Get the station from the mvm local station table */ 33245f7a1847SJohannes Berg mvm_sta = iwl_mvm_get_key_sta(mvm, vif, sta); 332571793b7dSLuca Coelho if (mvm_sta) 3326cd4d23c1SIlan Peer sta_id = mvm_sta->sta_id; 332785aeb58cSDavid Spinadel else if (!sta && vif->type == NL80211_IFTYPE_AP && mcast) 332885aeb58cSDavid Spinadel sta_id = iwl_mvm_vif_from_mac80211(vif)->mcast_sta.sta_id; 332985aeb58cSDavid Spinadel 3330e705c121SKalle Valo 3331e705c121SKalle Valo IWL_DEBUG_WEP(mvm, "mvm remove dynamic key: idx=%d sta=%d\n", 3332e705c121SKalle Valo keyconf->keyidx, sta_id); 3333e705c121SKalle Valo 333471793b7dSLuca Coelho if (mvm_sta && (keyconf->cipher == WLAN_CIPHER_SUITE_AES_CMAC || 33358e160ab8SAyala Beker keyconf->cipher == WLAN_CIPHER_SUITE_BIP_GMAC_128 || 333671793b7dSLuca Coelho keyconf->cipher == WLAN_CIPHER_SUITE_BIP_GMAC_256)) 3337e705c121SKalle Valo return iwl_mvm_send_sta_igtk(mvm, keyconf, sta_id, true); 3338e705c121SKalle Valo 3339e705c121SKalle Valo if (!__test_and_clear_bit(keyconf->hw_key_idx, mvm->fw_key_table)) { 3340e705c121SKalle Valo IWL_ERR(mvm, "offset %d not used in fw key table.\n", 3341e705c121SKalle Valo keyconf->hw_key_idx); 3342e705c121SKalle Valo return -ENOENT; 3343e705c121SKalle Valo } 3344e705c121SKalle Valo 3345e705c121SKalle Valo /* track which key was deleted last */ 3346e705c121SKalle Valo for (i = 0; i < STA_KEY_MAX_NUM; i++) { 3347e705c121SKalle Valo if (mvm->fw_key_deleted[i] < U8_MAX) 3348e705c121SKalle Valo mvm->fw_key_deleted[i]++; 3349e705c121SKalle Valo } 3350e705c121SKalle Valo mvm->fw_key_deleted[keyconf->hw_key_idx] = 0; 3351e705c121SKalle Valo 335285aeb58cSDavid Spinadel if (sta && !mvm_sta) { 3353e705c121SKalle Valo IWL_DEBUG_WEP(mvm, "station non-existent, early return.\n"); 3354e705c121SKalle Valo return 0; 3355e705c121SKalle Valo } 3356e705c121SKalle Valo 3357e705c121SKalle Valo ret = __iwl_mvm_remove_sta_key(mvm, sta_id, keyconf, mcast); 3358e705c121SKalle Valo if (ret) 3359e705c121SKalle Valo return ret; 3360e705c121SKalle Valo 3361e705c121SKalle Valo /* delete WEP key twice to get rid of (now useless) offset */ 3362e705c121SKalle Valo if (keyconf->cipher == WLAN_CIPHER_SUITE_WEP40 || 3363e705c121SKalle Valo keyconf->cipher == WLAN_CIPHER_SUITE_WEP104) 3364e705c121SKalle Valo ret = __iwl_mvm_remove_sta_key(mvm, sta_id, keyconf, !mcast); 3365e705c121SKalle Valo 3366e705c121SKalle Valo return ret; 3367e705c121SKalle Valo } 3368e705c121SKalle Valo 3369e705c121SKalle Valo void iwl_mvm_update_tkip_key(struct iwl_mvm *mvm, 3370e705c121SKalle Valo struct ieee80211_vif *vif, 3371e705c121SKalle Valo struct ieee80211_key_conf *keyconf, 3372e705c121SKalle Valo struct ieee80211_sta *sta, u32 iv32, 3373e705c121SKalle Valo u16 *phase1key) 3374e705c121SKalle Valo { 3375e705c121SKalle Valo struct iwl_mvm_sta *mvm_sta; 3376e705c121SKalle Valo bool mcast = !(keyconf->flags & IEEE80211_KEY_FLAG_PAIRWISE); 3377e705c121SKalle Valo 3378e705c121SKalle Valo rcu_read_lock(); 3379e705c121SKalle Valo 33805f7a1847SJohannes Berg mvm_sta = iwl_mvm_get_key_sta(mvm, vif, sta); 33815f7a1847SJohannes Berg if (WARN_ON_ONCE(!mvm_sta)) 338212f17211SEmmanuel Grumbach goto unlock; 338385aeb58cSDavid Spinadel iwl_mvm_send_sta_key(mvm, mvm_sta->sta_id, keyconf, mcast, 33844615fd15SEmmanuel Grumbach iv32, phase1key, CMD_ASYNC, keyconf->hw_key_idx); 338512f17211SEmmanuel Grumbach 338612f17211SEmmanuel Grumbach unlock: 3387e705c121SKalle Valo rcu_read_unlock(); 3388e705c121SKalle Valo } 3389e705c121SKalle Valo 3390e705c121SKalle Valo void iwl_mvm_sta_modify_ps_wake(struct iwl_mvm *mvm, 3391e705c121SKalle Valo struct ieee80211_sta *sta) 3392e705c121SKalle Valo { 3393e705c121SKalle Valo struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta); 3394e705c121SKalle Valo struct iwl_mvm_add_sta_cmd cmd = { 3395e705c121SKalle Valo .add_modify = STA_MODE_MODIFY, 3396e705c121SKalle Valo .sta_id = mvmsta->sta_id, 3397e705c121SKalle Valo .station_flags_msk = cpu_to_le32(STA_FLG_PS), 3398e705c121SKalle Valo .mac_id_n_color = cpu_to_le32(mvmsta->mac_id_n_color), 3399e705c121SKalle Valo }; 3400e705c121SKalle Valo int ret; 3401e705c121SKalle Valo 3402854c5705SSara Sharon ret = iwl_mvm_send_cmd_pdu(mvm, ADD_STA, CMD_ASYNC, 3403854c5705SSara Sharon iwl_mvm_add_sta_cmd_size(mvm), &cmd); 3404e705c121SKalle Valo if (ret) 3405e705c121SKalle Valo IWL_ERR(mvm, "Failed to send ADD_STA command (%d)\n", ret); 3406e705c121SKalle Valo } 3407e705c121SKalle Valo 3408e705c121SKalle Valo void iwl_mvm_sta_modify_sleep_tx_count(struct iwl_mvm *mvm, 3409e705c121SKalle Valo struct ieee80211_sta *sta, 3410e705c121SKalle Valo enum ieee80211_frame_release_type reason, 3411e705c121SKalle Valo u16 cnt, u16 tids, bool more_data, 34129a3fcf91SSara Sharon bool single_sta_queue) 3413e705c121SKalle Valo { 3414e705c121SKalle Valo struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta); 3415e705c121SKalle Valo struct iwl_mvm_add_sta_cmd cmd = { 3416e705c121SKalle Valo .add_modify = STA_MODE_MODIFY, 3417e705c121SKalle Valo .sta_id = mvmsta->sta_id, 3418e705c121SKalle Valo .modify_mask = STA_MODIFY_SLEEPING_STA_TX_COUNT, 3419e705c121SKalle Valo .sleep_tx_count = cpu_to_le16(cnt), 3420e705c121SKalle Valo .mac_id_n_color = cpu_to_le32(mvmsta->mac_id_n_color), 3421e705c121SKalle Valo }; 3422e705c121SKalle Valo int tid, ret; 3423e705c121SKalle Valo unsigned long _tids = tids; 3424e705c121SKalle Valo 3425e705c121SKalle Valo /* convert TIDs to ACs - we don't support TSPEC so that's OK 3426e705c121SKalle Valo * Note that this field is reserved and unused by firmware not 3427e705c121SKalle Valo * supporting GO uAPSD, so it's safe to always do this. 3428e705c121SKalle Valo */ 3429e705c121SKalle Valo for_each_set_bit(tid, &_tids, IWL_MAX_TID_COUNT) 3430e705c121SKalle Valo cmd.awake_acs |= BIT(tid_to_ucode_ac[tid]); 3431e705c121SKalle Valo 34329a3fcf91SSara Sharon /* If we're releasing frames from aggregation or dqa queues then check 34339a3fcf91SSara Sharon * if all the queues that we're releasing frames from, combined, have: 3434e705c121SKalle Valo * - more frames than the service period, in which case more_data 3435e705c121SKalle Valo * needs to be set 3436e705c121SKalle Valo * - fewer than 'cnt' frames, in which case we need to adjust the 3437e705c121SKalle Valo * firmware command (but do that unconditionally) 3438e705c121SKalle Valo */ 34399a3fcf91SSara Sharon if (single_sta_queue) { 3440e705c121SKalle Valo int remaining = cnt; 344136be0eb6SEmmanuel Grumbach int sleep_tx_count; 3442e705c121SKalle Valo 3443e705c121SKalle Valo spin_lock_bh(&mvmsta->lock); 3444e705c121SKalle Valo for_each_set_bit(tid, &_tids, IWL_MAX_TID_COUNT) { 3445e705c121SKalle Valo struct iwl_mvm_tid_data *tid_data; 3446e705c121SKalle Valo u16 n_queued; 3447e705c121SKalle Valo 3448e705c121SKalle Valo tid_data = &mvmsta->tid_data[tid]; 3449e705c121SKalle Valo 3450dd32162dSLiad Kaufman n_queued = iwl_mvm_tid_queued(mvm, tid_data); 3451e705c121SKalle Valo if (n_queued > remaining) { 3452e705c121SKalle Valo more_data = true; 3453e705c121SKalle Valo remaining = 0; 3454e705c121SKalle Valo break; 3455e705c121SKalle Valo } 3456e705c121SKalle Valo remaining -= n_queued; 3457e705c121SKalle Valo } 345836be0eb6SEmmanuel Grumbach sleep_tx_count = cnt - remaining; 345936be0eb6SEmmanuel Grumbach if (reason == IEEE80211_FRAME_RELEASE_UAPSD) 346036be0eb6SEmmanuel Grumbach mvmsta->sleep_tx_count = sleep_tx_count; 3461e705c121SKalle Valo spin_unlock_bh(&mvmsta->lock); 3462e705c121SKalle Valo 346336be0eb6SEmmanuel Grumbach cmd.sleep_tx_count = cpu_to_le16(sleep_tx_count); 3464e705c121SKalle Valo if (WARN_ON(cnt - remaining == 0)) { 3465e705c121SKalle Valo ieee80211_sta_eosp(sta); 3466e705c121SKalle Valo return; 3467e705c121SKalle Valo } 3468e705c121SKalle Valo } 3469e705c121SKalle Valo 3470e705c121SKalle Valo /* Note: this is ignored by firmware not supporting GO uAPSD */ 3471e705c121SKalle Valo if (more_data) 3472ced19f26SSara Sharon cmd.sleep_state_flags |= STA_SLEEP_STATE_MOREDATA; 3473e705c121SKalle Valo 3474e705c121SKalle Valo if (reason == IEEE80211_FRAME_RELEASE_PSPOLL) { 3475e705c121SKalle Valo mvmsta->next_status_eosp = true; 3476ced19f26SSara Sharon cmd.sleep_state_flags |= STA_SLEEP_STATE_PS_POLL; 3477e705c121SKalle Valo } else { 3478ced19f26SSara Sharon cmd.sleep_state_flags |= STA_SLEEP_STATE_UAPSD; 3479e705c121SKalle Valo } 3480e705c121SKalle Valo 3481156f92f2SEmmanuel Grumbach /* block the Tx queues until the FW updated the sleep Tx count */ 3482156f92f2SEmmanuel Grumbach iwl_trans_block_txq_ptrs(mvm->trans, true); 3483156f92f2SEmmanuel Grumbach 3484156f92f2SEmmanuel Grumbach ret = iwl_mvm_send_cmd_pdu(mvm, ADD_STA, 3485156f92f2SEmmanuel Grumbach CMD_ASYNC | CMD_WANT_ASYNC_CALLBACK, 3486854c5705SSara Sharon iwl_mvm_add_sta_cmd_size(mvm), &cmd); 3487e705c121SKalle Valo if (ret) 3488e705c121SKalle Valo IWL_ERR(mvm, "Failed to send ADD_STA command (%d)\n", ret); 3489e705c121SKalle Valo } 3490e705c121SKalle Valo 3491e705c121SKalle Valo void iwl_mvm_rx_eosp_notif(struct iwl_mvm *mvm, 3492e705c121SKalle Valo struct iwl_rx_cmd_buffer *rxb) 3493e705c121SKalle Valo { 3494e705c121SKalle Valo struct iwl_rx_packet *pkt = rxb_addr(rxb); 3495e705c121SKalle Valo struct iwl_mvm_eosp_notification *notif = (void *)pkt->data; 3496e705c121SKalle Valo struct ieee80211_sta *sta; 3497e705c121SKalle Valo u32 sta_id = le32_to_cpu(notif->sta_id); 3498e705c121SKalle Valo 3499e705c121SKalle Valo if (WARN_ON_ONCE(sta_id >= IWL_MVM_STATION_COUNT)) 3500e705c121SKalle Valo return; 3501e705c121SKalle Valo 3502e705c121SKalle Valo rcu_read_lock(); 3503e705c121SKalle Valo sta = rcu_dereference(mvm->fw_id_to_mac_id[sta_id]); 3504e705c121SKalle Valo if (!IS_ERR_OR_NULL(sta)) 3505e705c121SKalle Valo ieee80211_sta_eosp(sta); 3506e705c121SKalle Valo rcu_read_unlock(); 3507e705c121SKalle Valo } 3508e705c121SKalle Valo 3509e705c121SKalle Valo void iwl_mvm_sta_modify_disable_tx(struct iwl_mvm *mvm, 3510e705c121SKalle Valo struct iwl_mvm_sta *mvmsta, bool disable) 3511e705c121SKalle Valo { 3512e705c121SKalle Valo struct iwl_mvm_add_sta_cmd cmd = { 3513e705c121SKalle Valo .add_modify = STA_MODE_MODIFY, 3514e705c121SKalle Valo .sta_id = mvmsta->sta_id, 3515e705c121SKalle Valo .station_flags = disable ? cpu_to_le32(STA_FLG_DISABLE_TX) : 0, 3516e705c121SKalle Valo .station_flags_msk = cpu_to_le32(STA_FLG_DISABLE_TX), 3517e705c121SKalle Valo .mac_id_n_color = cpu_to_le32(mvmsta->mac_id_n_color), 3518e705c121SKalle Valo }; 3519e705c121SKalle Valo int ret; 3520e705c121SKalle Valo 3521854c5705SSara Sharon ret = iwl_mvm_send_cmd_pdu(mvm, ADD_STA, CMD_ASYNC, 3522854c5705SSara Sharon iwl_mvm_add_sta_cmd_size(mvm), &cmd); 3523e705c121SKalle Valo if (ret) 3524e705c121SKalle Valo IWL_ERR(mvm, "Failed to send ADD_STA command (%d)\n", ret); 3525e705c121SKalle Valo } 3526e705c121SKalle Valo 3527e705c121SKalle Valo void iwl_mvm_sta_modify_disable_tx_ap(struct iwl_mvm *mvm, 3528e705c121SKalle Valo struct ieee80211_sta *sta, 3529e705c121SKalle Valo bool disable) 3530e705c121SKalle Valo { 3531e705c121SKalle Valo struct iwl_mvm_sta *mvm_sta = iwl_mvm_sta_from_mac80211(sta); 3532e705c121SKalle Valo 3533e705c121SKalle Valo spin_lock_bh(&mvm_sta->lock); 3534e705c121SKalle Valo 3535e705c121SKalle Valo if (mvm_sta->disable_tx == disable) { 3536e705c121SKalle Valo spin_unlock_bh(&mvm_sta->lock); 3537e705c121SKalle Valo return; 3538e705c121SKalle Valo } 3539e705c121SKalle Valo 3540e705c121SKalle Valo mvm_sta->disable_tx = disable; 3541e705c121SKalle Valo 3542c8f54701SJohannes Berg /* Tell mac80211 to start/stop queuing tx for this station */ 3543e705c121SKalle Valo ieee80211_sta_block_awake(mvm->hw, sta, disable); 3544e705c121SKalle Valo 3545e705c121SKalle Valo iwl_mvm_sta_modify_disable_tx(mvm, mvm_sta, disable); 3546e705c121SKalle Valo 3547e705c121SKalle Valo spin_unlock_bh(&mvm_sta->lock); 3548e705c121SKalle Valo } 3549e705c121SKalle Valo 3550ced19f26SSara Sharon static void iwl_mvm_int_sta_modify_disable_tx(struct iwl_mvm *mvm, 3551ced19f26SSara Sharon struct iwl_mvm_vif *mvmvif, 3552ced19f26SSara Sharon struct iwl_mvm_int_sta *sta, 3553ced19f26SSara Sharon bool disable) 3554ced19f26SSara Sharon { 3555ced19f26SSara Sharon u32 id = FW_CMD_ID_AND_COLOR(mvmvif->id, mvmvif->color); 3556ced19f26SSara Sharon struct iwl_mvm_add_sta_cmd cmd = { 3557ced19f26SSara Sharon .add_modify = STA_MODE_MODIFY, 3558ced19f26SSara Sharon .sta_id = sta->sta_id, 3559ced19f26SSara Sharon .station_flags = disable ? cpu_to_le32(STA_FLG_DISABLE_TX) : 0, 3560ced19f26SSara Sharon .station_flags_msk = cpu_to_le32(STA_FLG_DISABLE_TX), 3561ced19f26SSara Sharon .mac_id_n_color = cpu_to_le32(id), 3562ced19f26SSara Sharon }; 3563ced19f26SSara Sharon int ret; 3564ced19f26SSara Sharon 3565ced19f26SSara Sharon ret = iwl_mvm_send_cmd_pdu(mvm, ADD_STA, 0, 3566ced19f26SSara Sharon iwl_mvm_add_sta_cmd_size(mvm), &cmd); 3567ced19f26SSara Sharon if (ret) 3568ced19f26SSara Sharon IWL_ERR(mvm, "Failed to send ADD_STA command (%d)\n", ret); 3569ced19f26SSara Sharon } 3570ced19f26SSara Sharon 3571e705c121SKalle Valo void iwl_mvm_modify_all_sta_disable_tx(struct iwl_mvm *mvm, 3572e705c121SKalle Valo struct iwl_mvm_vif *mvmvif, 3573e705c121SKalle Valo bool disable) 3574e705c121SKalle Valo { 3575e705c121SKalle Valo struct ieee80211_sta *sta; 3576e705c121SKalle Valo struct iwl_mvm_sta *mvm_sta; 3577e705c121SKalle Valo int i; 3578e705c121SKalle Valo 3579e705c121SKalle Valo lockdep_assert_held(&mvm->mutex); 3580e705c121SKalle Valo 3581e705c121SKalle Valo /* Block/unblock all the stations of the given mvmvif */ 35820ae98812SSara Sharon for (i = 0; i < ARRAY_SIZE(mvm->fw_id_to_mac_id); i++) { 3583e705c121SKalle Valo sta = rcu_dereference_protected(mvm->fw_id_to_mac_id[i], 3584e705c121SKalle Valo lockdep_is_held(&mvm->mutex)); 3585e705c121SKalle Valo if (IS_ERR_OR_NULL(sta)) 3586e705c121SKalle Valo continue; 3587e705c121SKalle Valo 3588e705c121SKalle Valo mvm_sta = iwl_mvm_sta_from_mac80211(sta); 3589e705c121SKalle Valo if (mvm_sta->mac_id_n_color != 3590e705c121SKalle Valo FW_CMD_ID_AND_COLOR(mvmvif->id, mvmvif->color)) 3591e705c121SKalle Valo continue; 3592e705c121SKalle Valo 3593e705c121SKalle Valo iwl_mvm_sta_modify_disable_tx_ap(mvm, sta, disable); 3594e705c121SKalle Valo } 3595ced19f26SSara Sharon 3596ced19f26SSara Sharon if (!fw_has_api(&mvm->fw->ucode_capa, IWL_UCODE_TLV_API_STA_TYPE)) 3597ced19f26SSara Sharon return; 3598ced19f26SSara Sharon 3599ced19f26SSara Sharon /* Need to block/unblock also multicast station */ 3600ced19f26SSara Sharon if (mvmvif->mcast_sta.sta_id != IWL_MVM_INVALID_STA) 3601ced19f26SSara Sharon iwl_mvm_int_sta_modify_disable_tx(mvm, mvmvif, 3602ced19f26SSara Sharon &mvmvif->mcast_sta, disable); 3603ced19f26SSara Sharon 3604ced19f26SSara Sharon /* 3605ced19f26SSara Sharon * Only unblock the broadcast station (FW blocks it for immediate 3606ced19f26SSara Sharon * quiet, not the driver) 3607ced19f26SSara Sharon */ 3608ced19f26SSara Sharon if (!disable && mvmvif->bcast_sta.sta_id != IWL_MVM_INVALID_STA) 3609ced19f26SSara Sharon iwl_mvm_int_sta_modify_disable_tx(mvm, mvmvif, 3610ced19f26SSara Sharon &mvmvif->bcast_sta, disable); 3611e705c121SKalle Valo } 3612e705c121SKalle Valo 3613e705c121SKalle Valo void iwl_mvm_csa_client_absent(struct iwl_mvm *mvm, struct ieee80211_vif *vif) 3614e705c121SKalle Valo { 3615e705c121SKalle Valo struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 3616e705c121SKalle Valo struct iwl_mvm_sta *mvmsta; 3617e705c121SKalle Valo 3618e705c121SKalle Valo rcu_read_lock(); 3619e705c121SKalle Valo 3620e705c121SKalle Valo mvmsta = iwl_mvm_sta_from_staid_rcu(mvm, mvmvif->ap_sta_id); 3621e705c121SKalle Valo 3622e705c121SKalle Valo if (!WARN_ON(!mvmsta)) 3623e705c121SKalle Valo iwl_mvm_sta_modify_disable_tx(mvm, mvmsta, true); 3624e705c121SKalle Valo 3625e705c121SKalle Valo rcu_read_unlock(); 3626e705c121SKalle Valo } 3627dd32162dSLiad Kaufman 3628dd32162dSLiad Kaufman u16 iwl_mvm_tid_queued(struct iwl_mvm *mvm, struct iwl_mvm_tid_data *tid_data) 3629dd32162dSLiad Kaufman { 3630dd32162dSLiad Kaufman u16 sn = IEEE80211_SEQ_TO_SN(tid_data->seq_number); 3631dd32162dSLiad Kaufman 3632dd32162dSLiad Kaufman /* 36332f7a3863SLuca Coelho * In 22000 HW, the next_reclaimed index is only 8 bit, so we'll need 3634dd32162dSLiad Kaufman * to align the wrap around of ssn so we compare relevant values. 3635dd32162dSLiad Kaufman */ 3636dd32162dSLiad Kaufman if (mvm->trans->cfg->gen2) 3637dd32162dSLiad Kaufman sn &= 0xff; 3638dd32162dSLiad Kaufman 3639dd32162dSLiad Kaufman return ieee80211_sn_sub(sn, tid_data->next_reclaimed); 3640dd32162dSLiad Kaufman } 3641