1e705c121SKalle Valo /****************************************************************************** 2e705c121SKalle Valo * 3e705c121SKalle Valo * This file is provided under a dual BSD/GPLv2 license. When using or 4e705c121SKalle Valo * redistributing this file, you may do so under either license. 5e705c121SKalle Valo * 6e705c121SKalle Valo * GPL LICENSE SUMMARY 7e705c121SKalle Valo * 8e705c121SKalle Valo * Copyright(c) 2012 - 2015 Intel Corporation. All rights reserved. 9e705c121SKalle Valo * Copyright(c) 2013 - 2015 Intel Mobile Communications GmbH 10854c5705SSara Sharon * Copyright(c) 2016 Intel Deutschland GmbH 11e705c121SKalle Valo * 12e705c121SKalle Valo * This program is free software; you can redistribute it and/or modify 13e705c121SKalle Valo * it under the terms of version 2 of the GNU General Public License as 14e705c121SKalle Valo * published by the Free Software Foundation. 15e705c121SKalle Valo * 16e705c121SKalle Valo * This program is distributed in the hope that it will be useful, but 17e705c121SKalle Valo * WITHOUT ANY WARRANTY; without even the implied warranty of 18e705c121SKalle Valo * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 19e705c121SKalle Valo * General Public License for more details. 20e705c121SKalle Valo * 21e705c121SKalle Valo * You should have received a copy of the GNU General Public License 22e705c121SKalle Valo * along with this program; if not, write to the Free Software 23e705c121SKalle Valo * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110, 24e705c121SKalle Valo * USA 25e705c121SKalle Valo * 26e705c121SKalle Valo * The full GNU General Public License is included in this distribution 27e705c121SKalle Valo * in the file called COPYING. 28e705c121SKalle Valo * 29e705c121SKalle Valo * Contact Information: 30cb2f8277SEmmanuel Grumbach * Intel Linux Wireless <linuxwifi@intel.com> 31e705c121SKalle Valo * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497 32e705c121SKalle Valo * 33e705c121SKalle Valo * BSD LICENSE 34e705c121SKalle Valo * 35e705c121SKalle Valo * Copyright(c) 2012 - 2015 Intel Corporation. All rights reserved. 36e705c121SKalle Valo * Copyright(c) 2013 - 2015 Intel Mobile Communications GmbH 37854c5705SSara Sharon * Copyright(c) 2016 Intel Deutschland GmbH 38e705c121SKalle Valo * All rights reserved. 39e705c121SKalle Valo * 40e705c121SKalle Valo * Redistribution and use in source and binary forms, with or without 41e705c121SKalle Valo * modification, are permitted provided that the following conditions 42e705c121SKalle Valo * are met: 43e705c121SKalle Valo * 44e705c121SKalle Valo * * Redistributions of source code must retain the above copyright 45e705c121SKalle Valo * notice, this list of conditions and the following disclaimer. 46e705c121SKalle Valo * * Redistributions in binary form must reproduce the above copyright 47e705c121SKalle Valo * notice, this list of conditions and the following disclaimer in 48e705c121SKalle Valo * the documentation and/or other materials provided with the 49e705c121SKalle Valo * distribution. 50e705c121SKalle Valo * * Neither the name Intel Corporation nor the names of its 51e705c121SKalle Valo * contributors may be used to endorse or promote products derived 52e705c121SKalle Valo * from this software without specific prior written permission. 53e705c121SKalle Valo * 54e705c121SKalle Valo * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 55e705c121SKalle Valo * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 56e705c121SKalle Valo * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 57e705c121SKalle Valo * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 58e705c121SKalle Valo * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 59e705c121SKalle Valo * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 60e705c121SKalle Valo * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 61e705c121SKalle Valo * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 62e705c121SKalle Valo * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 63e705c121SKalle Valo * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 64e705c121SKalle Valo * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 65e705c121SKalle Valo * 66e705c121SKalle Valo *****************************************************************************/ 67e705c121SKalle Valo #include <net/mac80211.h> 68e705c121SKalle Valo 69e705c121SKalle Valo #include "mvm.h" 70e705c121SKalle Valo #include "sta.h" 71e705c121SKalle Valo #include "rs.h" 72e705c121SKalle Valo 73854c5705SSara Sharon /* 74854c5705SSara Sharon * New version of ADD_STA_sta command added new fields at the end of the 75854c5705SSara Sharon * structure, so sending the size of the relevant API's structure is enough to 76854c5705SSara Sharon * support both API versions. 77854c5705SSara Sharon */ 78854c5705SSara Sharon static inline int iwl_mvm_add_sta_cmd_size(struct iwl_mvm *mvm) 79854c5705SSara Sharon { 80854c5705SSara Sharon return iwl_mvm_has_new_rx_api(mvm) ? 81854c5705SSara Sharon sizeof(struct iwl_mvm_add_sta_cmd) : 82854c5705SSara Sharon sizeof(struct iwl_mvm_add_sta_cmd_v7); 83854c5705SSara Sharon } 84854c5705SSara Sharon 85e705c121SKalle Valo static int iwl_mvm_find_free_sta_id(struct iwl_mvm *mvm, 86e705c121SKalle Valo enum nl80211_iftype iftype) 87e705c121SKalle Valo { 88e705c121SKalle Valo int sta_id; 89e705c121SKalle Valo u32 reserved_ids = 0; 90e705c121SKalle Valo 91e705c121SKalle Valo BUILD_BUG_ON(IWL_MVM_STATION_COUNT > 32); 92e705c121SKalle Valo WARN_ON_ONCE(test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status)); 93e705c121SKalle Valo 94e705c121SKalle Valo lockdep_assert_held(&mvm->mutex); 95e705c121SKalle Valo 96e705c121SKalle Valo /* d0i3/d3 assumes the AP's sta_id (of sta vif) is 0. reserve it. */ 97e705c121SKalle Valo if (iftype != NL80211_IFTYPE_STATION) 98e705c121SKalle Valo reserved_ids = BIT(0); 99e705c121SKalle Valo 100e705c121SKalle Valo /* Don't take rcu_read_lock() since we are protected by mvm->mutex */ 101e705c121SKalle Valo for (sta_id = 0; sta_id < IWL_MVM_STATION_COUNT; sta_id++) { 102e705c121SKalle Valo if (BIT(sta_id) & reserved_ids) 103e705c121SKalle Valo continue; 104e705c121SKalle Valo 105e705c121SKalle Valo if (!rcu_dereference_protected(mvm->fw_id_to_mac_id[sta_id], 106e705c121SKalle Valo lockdep_is_held(&mvm->mutex))) 107e705c121SKalle Valo return sta_id; 108e705c121SKalle Valo } 109e705c121SKalle Valo return IWL_MVM_STATION_COUNT; 110e705c121SKalle Valo } 111e705c121SKalle Valo 112e705c121SKalle Valo /* send station add/update command to firmware */ 113e705c121SKalle Valo int iwl_mvm_sta_send_to_fw(struct iwl_mvm *mvm, struct ieee80211_sta *sta, 11424afba76SLiad Kaufman bool update, unsigned int flags) 115e705c121SKalle Valo { 116e705c121SKalle Valo struct iwl_mvm_sta *mvm_sta = iwl_mvm_sta_from_mac80211(sta); 117e705c121SKalle Valo struct iwl_mvm_add_sta_cmd add_sta_cmd = { 118e705c121SKalle Valo .sta_id = mvm_sta->sta_id, 119e705c121SKalle Valo .mac_id_n_color = cpu_to_le32(mvm_sta->mac_id_n_color), 120e705c121SKalle Valo .add_modify = update ? 1 : 0, 121e705c121SKalle Valo .station_flags_msk = cpu_to_le32(STA_FLG_FAT_EN_MSK | 122e705c121SKalle Valo STA_FLG_MIMO_EN_MSK), 123cf0cda19SLiad Kaufman .tid_disable_tx = cpu_to_le16(mvm_sta->tid_disable_agg), 124e705c121SKalle Valo }; 125e705c121SKalle Valo int ret; 126e705c121SKalle Valo u32 status; 127e705c121SKalle Valo u32 agg_size = 0, mpdu_dens = 0; 128e705c121SKalle Valo 12924afba76SLiad Kaufman if (!update || (flags & STA_MODIFY_QUEUES)) { 130e705c121SKalle Valo add_sta_cmd.tfd_queue_msk = cpu_to_le32(mvm_sta->tfd_queue_msk); 131e705c121SKalle Valo memcpy(&add_sta_cmd.addr, sta->addr, ETH_ALEN); 13224afba76SLiad Kaufman 13324afba76SLiad Kaufman if (flags & STA_MODIFY_QUEUES) 13424afba76SLiad Kaufman add_sta_cmd.modify_mask |= STA_MODIFY_QUEUES; 135e705c121SKalle Valo } 136e705c121SKalle Valo 137e705c121SKalle Valo switch (sta->bandwidth) { 138e705c121SKalle Valo case IEEE80211_STA_RX_BW_160: 139e705c121SKalle Valo add_sta_cmd.station_flags |= cpu_to_le32(STA_FLG_FAT_EN_160MHZ); 140e705c121SKalle Valo /* fall through */ 141e705c121SKalle Valo case IEEE80211_STA_RX_BW_80: 142e705c121SKalle Valo add_sta_cmd.station_flags |= cpu_to_le32(STA_FLG_FAT_EN_80MHZ); 143e705c121SKalle Valo /* fall through */ 144e705c121SKalle Valo case IEEE80211_STA_RX_BW_40: 145e705c121SKalle Valo add_sta_cmd.station_flags |= cpu_to_le32(STA_FLG_FAT_EN_40MHZ); 146e705c121SKalle Valo /* fall through */ 147e705c121SKalle Valo case IEEE80211_STA_RX_BW_20: 148e705c121SKalle Valo if (sta->ht_cap.ht_supported) 149e705c121SKalle Valo add_sta_cmd.station_flags |= 150e705c121SKalle Valo cpu_to_le32(STA_FLG_FAT_EN_20MHZ); 151e705c121SKalle Valo break; 152e705c121SKalle Valo } 153e705c121SKalle Valo 154e705c121SKalle Valo switch (sta->rx_nss) { 155e705c121SKalle Valo case 1: 156e705c121SKalle Valo add_sta_cmd.station_flags |= cpu_to_le32(STA_FLG_MIMO_EN_SISO); 157e705c121SKalle Valo break; 158e705c121SKalle Valo case 2: 159e705c121SKalle Valo add_sta_cmd.station_flags |= cpu_to_le32(STA_FLG_MIMO_EN_MIMO2); 160e705c121SKalle Valo break; 161e705c121SKalle Valo case 3 ... 8: 162e705c121SKalle Valo add_sta_cmd.station_flags |= cpu_to_le32(STA_FLG_MIMO_EN_MIMO3); 163e705c121SKalle Valo break; 164e705c121SKalle Valo } 165e705c121SKalle Valo 166e705c121SKalle Valo switch (sta->smps_mode) { 167e705c121SKalle Valo case IEEE80211_SMPS_AUTOMATIC: 168e705c121SKalle Valo case IEEE80211_SMPS_NUM_MODES: 169e705c121SKalle Valo WARN_ON(1); 170e705c121SKalle Valo break; 171e705c121SKalle Valo case IEEE80211_SMPS_STATIC: 172e705c121SKalle Valo /* override NSS */ 173e705c121SKalle Valo add_sta_cmd.station_flags &= ~cpu_to_le32(STA_FLG_MIMO_EN_MSK); 174e705c121SKalle Valo add_sta_cmd.station_flags |= cpu_to_le32(STA_FLG_MIMO_EN_SISO); 175e705c121SKalle Valo break; 176e705c121SKalle Valo case IEEE80211_SMPS_DYNAMIC: 177e705c121SKalle Valo add_sta_cmd.station_flags |= cpu_to_le32(STA_FLG_RTS_MIMO_PROT); 178e705c121SKalle Valo break; 179e705c121SKalle Valo case IEEE80211_SMPS_OFF: 180e705c121SKalle Valo /* nothing */ 181e705c121SKalle Valo break; 182e705c121SKalle Valo } 183e705c121SKalle Valo 184e705c121SKalle Valo if (sta->ht_cap.ht_supported) { 185e705c121SKalle Valo add_sta_cmd.station_flags_msk |= 186e705c121SKalle Valo cpu_to_le32(STA_FLG_MAX_AGG_SIZE_MSK | 187e705c121SKalle Valo STA_FLG_AGG_MPDU_DENS_MSK); 188e705c121SKalle Valo 189e705c121SKalle Valo mpdu_dens = sta->ht_cap.ampdu_density; 190e705c121SKalle Valo } 191e705c121SKalle Valo 192e705c121SKalle Valo if (sta->vht_cap.vht_supported) { 193e705c121SKalle Valo agg_size = sta->vht_cap.cap & 194e705c121SKalle Valo IEEE80211_VHT_CAP_MAX_A_MPDU_LENGTH_EXPONENT_MASK; 195e705c121SKalle Valo agg_size >>= 196e705c121SKalle Valo IEEE80211_VHT_CAP_MAX_A_MPDU_LENGTH_EXPONENT_SHIFT; 197e705c121SKalle Valo } else if (sta->ht_cap.ht_supported) { 198e705c121SKalle Valo agg_size = sta->ht_cap.ampdu_factor; 199e705c121SKalle Valo } 200e705c121SKalle Valo 201e705c121SKalle Valo add_sta_cmd.station_flags |= 202e705c121SKalle Valo cpu_to_le32(agg_size << STA_FLG_MAX_AGG_SIZE_SHIFT); 203e705c121SKalle Valo add_sta_cmd.station_flags |= 204e705c121SKalle Valo cpu_to_le32(mpdu_dens << STA_FLG_AGG_MPDU_DENS_SHIFT); 205e705c121SKalle Valo 206e705c121SKalle Valo status = ADD_STA_SUCCESS; 207854c5705SSara Sharon ret = iwl_mvm_send_cmd_pdu_status(mvm, ADD_STA, 208854c5705SSara Sharon iwl_mvm_add_sta_cmd_size(mvm), 209e705c121SKalle Valo &add_sta_cmd, &status); 210e705c121SKalle Valo if (ret) 211e705c121SKalle Valo return ret; 212e705c121SKalle Valo 213837c4da9SSara Sharon switch (status & IWL_ADD_STA_STATUS_MASK) { 214e705c121SKalle Valo case ADD_STA_SUCCESS: 215e705c121SKalle Valo IWL_DEBUG_ASSOC(mvm, "ADD_STA PASSED\n"); 216e705c121SKalle Valo break; 217e705c121SKalle Valo default: 218e705c121SKalle Valo ret = -EIO; 219e705c121SKalle Valo IWL_ERR(mvm, "ADD_STA failed\n"); 220e705c121SKalle Valo break; 221e705c121SKalle Valo } 222e705c121SKalle Valo 223e705c121SKalle Valo return ret; 224e705c121SKalle Valo } 225e705c121SKalle Valo 226e705c121SKalle Valo static int iwl_mvm_tdls_sta_init(struct iwl_mvm *mvm, 227e705c121SKalle Valo struct ieee80211_sta *sta) 228e705c121SKalle Valo { 229e705c121SKalle Valo unsigned long used_hw_queues; 230e705c121SKalle Valo struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta); 231e705c121SKalle Valo unsigned int wdg_timeout = 232e705c121SKalle Valo iwl_mvm_get_wd_timeout(mvm, NULL, true, false); 233e705c121SKalle Valo u32 ac; 234e705c121SKalle Valo 235e705c121SKalle Valo lockdep_assert_held(&mvm->mutex); 236e705c121SKalle Valo 237e705c121SKalle Valo used_hw_queues = iwl_mvm_get_used_hw_queues(mvm, NULL); 238e705c121SKalle Valo 239e705c121SKalle Valo /* Find available queues, and allocate them to the ACs */ 240e705c121SKalle Valo for (ac = 0; ac < IEEE80211_NUM_ACS; ac++) { 241e705c121SKalle Valo u8 queue = find_first_zero_bit(&used_hw_queues, 242e705c121SKalle Valo mvm->first_agg_queue); 243e705c121SKalle Valo 244e705c121SKalle Valo if (queue >= mvm->first_agg_queue) { 245e705c121SKalle Valo IWL_ERR(mvm, "Failed to allocate STA queue\n"); 246e705c121SKalle Valo return -EBUSY; 247e705c121SKalle Valo } 248e705c121SKalle Valo 249e705c121SKalle Valo __set_bit(queue, &used_hw_queues); 250e705c121SKalle Valo mvmsta->hw_queue[ac] = queue; 251e705c121SKalle Valo } 252e705c121SKalle Valo 253e705c121SKalle Valo /* Found a place for all queues - enable them */ 254e705c121SKalle Valo for (ac = 0; ac < IEEE80211_NUM_ACS; ac++) { 255e705c121SKalle Valo iwl_mvm_enable_ac_txq(mvm, mvmsta->hw_queue[ac], 256e705c121SKalle Valo mvmsta->hw_queue[ac], 257e705c121SKalle Valo iwl_mvm_ac_to_tx_fifo[ac], 0, 258e705c121SKalle Valo wdg_timeout); 259e705c121SKalle Valo mvmsta->tfd_queue_msk |= BIT(mvmsta->hw_queue[ac]); 260e705c121SKalle Valo } 261e705c121SKalle Valo 262e705c121SKalle Valo return 0; 263e705c121SKalle Valo } 264e705c121SKalle Valo 265e705c121SKalle Valo static void iwl_mvm_tdls_sta_deinit(struct iwl_mvm *mvm, 266e705c121SKalle Valo struct ieee80211_sta *sta) 267e705c121SKalle Valo { 268e705c121SKalle Valo struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta); 269e705c121SKalle Valo unsigned long sta_msk; 270e705c121SKalle Valo int i; 271e705c121SKalle Valo 272e705c121SKalle Valo lockdep_assert_held(&mvm->mutex); 273e705c121SKalle Valo 274e705c121SKalle Valo /* disable the TDLS STA-specific queues */ 275e705c121SKalle Valo sta_msk = mvmsta->tfd_queue_msk; 276e705c121SKalle Valo for_each_set_bit(i, &sta_msk, sizeof(sta_msk) * BITS_PER_BYTE) 277e705c121SKalle Valo iwl_mvm_disable_txq(mvm, i, i, IWL_MAX_TID_COUNT, 0); 278e705c121SKalle Valo } 279e705c121SKalle Valo 28024afba76SLiad Kaufman static int iwl_mvm_sta_alloc_queue(struct iwl_mvm *mvm, 28124afba76SLiad Kaufman struct ieee80211_sta *sta, u8 ac, int tid, 28224afba76SLiad Kaufman struct ieee80211_hdr *hdr) 28324afba76SLiad Kaufman { 28424afba76SLiad Kaufman struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta); 28524afba76SLiad Kaufman struct iwl_trans_txq_scd_cfg cfg = { 28624afba76SLiad Kaufman .fifo = iwl_mvm_ac_to_tx_fifo[ac], 28724afba76SLiad Kaufman .sta_id = mvmsta->sta_id, 28824afba76SLiad Kaufman .tid = tid, 28924afba76SLiad Kaufman .frame_limit = IWL_FRAME_LIMIT, 29024afba76SLiad Kaufman }; 29124afba76SLiad Kaufman unsigned int wdg_timeout = 29224afba76SLiad Kaufman iwl_mvm_get_wd_timeout(mvm, mvmsta->vif, false, false); 29324afba76SLiad Kaufman u8 mac_queue = mvmsta->vif->hw_queue[ac]; 29424afba76SLiad Kaufman int queue = -1; 29524afba76SLiad Kaufman int ssn; 29624afba76SLiad Kaufman 29724afba76SLiad Kaufman lockdep_assert_held(&mvm->mutex); 29824afba76SLiad Kaufman 299d2515a99SLiad Kaufman spin_lock_bh(&mvm->queue_info_lock); 30024afba76SLiad Kaufman 30124afba76SLiad Kaufman /* 30224afba76SLiad Kaufman * Non-QoS, QoS NDP and MGMT frames should go to a MGMT queue, if one 30324afba76SLiad Kaufman * exists 30424afba76SLiad Kaufman */ 30524afba76SLiad Kaufman if (!ieee80211_is_data_qos(hdr->frame_control) || 30624afba76SLiad Kaufman ieee80211_is_qos_nullfunc(hdr->frame_control)) { 30724afba76SLiad Kaufman queue = iwl_mvm_find_free_queue(mvm, IWL_MVM_DQA_MIN_MGMT_QUEUE, 30824afba76SLiad Kaufman IWL_MVM_DQA_MAX_MGMT_QUEUE); 30924afba76SLiad Kaufman if (queue >= IWL_MVM_DQA_MIN_MGMT_QUEUE) 31024afba76SLiad Kaufman IWL_DEBUG_TX_QUEUES(mvm, "Found free MGMT queue #%d\n", 31124afba76SLiad Kaufman queue); 31224afba76SLiad Kaufman 31324afba76SLiad Kaufman /* If no such queue is found, we'll use a DATA queue instead */ 31424afba76SLiad Kaufman } 31524afba76SLiad Kaufman 31624afba76SLiad Kaufman if (queue < 0 && mvmsta->reserved_queue != IEEE80211_INVAL_HW_QUEUE) { 31724afba76SLiad Kaufman queue = mvmsta->reserved_queue; 31824afba76SLiad Kaufman IWL_DEBUG_TX_QUEUES(mvm, "Using reserved queue #%d\n", queue); 31924afba76SLiad Kaufman } 32024afba76SLiad Kaufman 32124afba76SLiad Kaufman if (queue < 0) 32224afba76SLiad Kaufman queue = iwl_mvm_find_free_queue(mvm, IWL_MVM_DQA_MIN_DATA_QUEUE, 32324afba76SLiad Kaufman IWL_MVM_DQA_MAX_DATA_QUEUE); 32424afba76SLiad Kaufman if (queue >= 0) 32524afba76SLiad Kaufman mvm->queue_info[queue].setup_reserved = false; 32624afba76SLiad Kaufman 327d2515a99SLiad Kaufman spin_unlock_bh(&mvm->queue_info_lock); 32824afba76SLiad Kaufman 32924afba76SLiad Kaufman /* TODO: support shared queues for same RA */ 33024afba76SLiad Kaufman if (queue < 0) 33124afba76SLiad Kaufman return -ENOSPC; 33224afba76SLiad Kaufman 33324afba76SLiad Kaufman /* 33424afba76SLiad Kaufman * Actual en/disablement of aggregations is through the ADD_STA HCMD, 33524afba76SLiad Kaufman * but for configuring the SCD to send A-MPDUs we need to mark the queue 33624afba76SLiad Kaufman * as aggregatable. 33724afba76SLiad Kaufman * Mark all DATA queues as allowing to be aggregated at some point 33824afba76SLiad Kaufman */ 339d5216a28SLiad Kaufman cfg.aggregate = (queue >= IWL_MVM_DQA_MIN_DATA_QUEUE || 340d5216a28SLiad Kaufman queue == IWL_MVM_DQA_BSS_CLIENT_QUEUE); 34124afba76SLiad Kaufman 34224afba76SLiad Kaufman IWL_DEBUG_TX_QUEUES(mvm, "Allocating queue #%d to sta %d on tid %d\n", 34324afba76SLiad Kaufman queue, mvmsta->sta_id, tid); 34424afba76SLiad Kaufman 34524afba76SLiad Kaufman ssn = IEEE80211_SEQ_TO_SN(le16_to_cpu(hdr->seq_ctrl)); 34624afba76SLiad Kaufman iwl_mvm_enable_txq(mvm, queue, mac_queue, ssn, &cfg, 34724afba76SLiad Kaufman wdg_timeout); 34824afba76SLiad Kaufman 34924afba76SLiad Kaufman spin_lock_bh(&mvmsta->lock); 35024afba76SLiad Kaufman mvmsta->tid_data[tid].txq_id = queue; 35124afba76SLiad Kaufman mvmsta->tfd_queue_msk |= BIT(queue); 35224afba76SLiad Kaufman 35324afba76SLiad Kaufman if (mvmsta->reserved_queue == queue) 35424afba76SLiad Kaufman mvmsta->reserved_queue = IEEE80211_INVAL_HW_QUEUE; 35524afba76SLiad Kaufman spin_unlock_bh(&mvmsta->lock); 35624afba76SLiad Kaufman 35724afba76SLiad Kaufman return iwl_mvm_sta_send_to_fw(mvm, sta, true, STA_MODIFY_QUEUES); 35824afba76SLiad Kaufman } 35924afba76SLiad Kaufman 36024afba76SLiad Kaufman static inline u8 iwl_mvm_tid_to_ac_queue(int tid) 36124afba76SLiad Kaufman { 36224afba76SLiad Kaufman if (tid == IWL_MAX_TID_COUNT) 36324afba76SLiad Kaufman return IEEE80211_AC_VO; /* MGMT */ 36424afba76SLiad Kaufman 36524afba76SLiad Kaufman return tid_to_mac80211_ac[tid]; 36624afba76SLiad Kaufman } 36724afba76SLiad Kaufman 36824afba76SLiad Kaufman static void iwl_mvm_tx_deferred_stream(struct iwl_mvm *mvm, 36924afba76SLiad Kaufman struct ieee80211_sta *sta, int tid) 37024afba76SLiad Kaufman { 37124afba76SLiad Kaufman struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta); 37224afba76SLiad Kaufman struct iwl_mvm_tid_data *tid_data = &mvmsta->tid_data[tid]; 37324afba76SLiad Kaufman struct sk_buff *skb; 37424afba76SLiad Kaufman struct ieee80211_hdr *hdr; 37524afba76SLiad Kaufman struct sk_buff_head deferred_tx; 37624afba76SLiad Kaufman u8 mac_queue; 37724afba76SLiad Kaufman bool no_queue = false; /* Marks if there is a problem with the queue */ 37824afba76SLiad Kaufman u8 ac; 37924afba76SLiad Kaufman 38024afba76SLiad Kaufman lockdep_assert_held(&mvm->mutex); 38124afba76SLiad Kaufman 38224afba76SLiad Kaufman skb = skb_peek(&tid_data->deferred_tx_frames); 38324afba76SLiad Kaufman if (!skb) 38424afba76SLiad Kaufman return; 38524afba76SLiad Kaufman hdr = (void *)skb->data; 38624afba76SLiad Kaufman 38724afba76SLiad Kaufman ac = iwl_mvm_tid_to_ac_queue(tid); 38824afba76SLiad Kaufman mac_queue = IEEE80211_SKB_CB(skb)->hw_queue; 38924afba76SLiad Kaufman 39024afba76SLiad Kaufman if (tid_data->txq_id == IEEE80211_INVAL_HW_QUEUE && 39124afba76SLiad Kaufman iwl_mvm_sta_alloc_queue(mvm, sta, ac, tid, hdr)) { 39224afba76SLiad Kaufman IWL_ERR(mvm, 39324afba76SLiad Kaufman "Can't alloc TXQ for sta %d tid %d - dropping frame\n", 39424afba76SLiad Kaufman mvmsta->sta_id, tid); 39524afba76SLiad Kaufman 39624afba76SLiad Kaufman /* 39724afba76SLiad Kaufman * Mark queue as problematic so later the deferred traffic is 39824afba76SLiad Kaufman * freed, as we can do nothing with it 39924afba76SLiad Kaufman */ 40024afba76SLiad Kaufman no_queue = true; 40124afba76SLiad Kaufman } 40224afba76SLiad Kaufman 40324afba76SLiad Kaufman __skb_queue_head_init(&deferred_tx); 40424afba76SLiad Kaufman 405d2515a99SLiad Kaufman /* Disable bottom-halves when entering TX path */ 406d2515a99SLiad Kaufman local_bh_disable(); 40724afba76SLiad Kaufman spin_lock(&mvmsta->lock); 40824afba76SLiad Kaufman skb_queue_splice_init(&tid_data->deferred_tx_frames, &deferred_tx); 40924afba76SLiad Kaufman spin_unlock(&mvmsta->lock); 41024afba76SLiad Kaufman 41124afba76SLiad Kaufman while ((skb = __skb_dequeue(&deferred_tx))) 41224afba76SLiad Kaufman if (no_queue || iwl_mvm_tx_skb(mvm, skb, sta)) 41324afba76SLiad Kaufman ieee80211_free_txskb(mvm->hw, skb); 41424afba76SLiad Kaufman local_bh_enable(); 41524afba76SLiad Kaufman 41624afba76SLiad Kaufman /* Wake queue */ 41724afba76SLiad Kaufman iwl_mvm_start_mac_queues(mvm, BIT(mac_queue)); 41824afba76SLiad Kaufman } 41924afba76SLiad Kaufman 42024afba76SLiad Kaufman void iwl_mvm_add_new_dqa_stream_wk(struct work_struct *wk) 42124afba76SLiad Kaufman { 42224afba76SLiad Kaufman struct iwl_mvm *mvm = container_of(wk, struct iwl_mvm, 42324afba76SLiad Kaufman add_stream_wk); 42424afba76SLiad Kaufman struct ieee80211_sta *sta; 42524afba76SLiad Kaufman struct iwl_mvm_sta *mvmsta; 42624afba76SLiad Kaufman unsigned long deferred_tid_traffic; 42724afba76SLiad Kaufman int sta_id, tid; 42824afba76SLiad Kaufman 42924afba76SLiad Kaufman mutex_lock(&mvm->mutex); 43024afba76SLiad Kaufman 43124afba76SLiad Kaufman /* Go over all stations with deferred traffic */ 43224afba76SLiad Kaufman for_each_set_bit(sta_id, mvm->sta_deferred_frames, 43324afba76SLiad Kaufman IWL_MVM_STATION_COUNT) { 43424afba76SLiad Kaufman clear_bit(sta_id, mvm->sta_deferred_frames); 43524afba76SLiad Kaufman sta = rcu_dereference_protected(mvm->fw_id_to_mac_id[sta_id], 43624afba76SLiad Kaufman lockdep_is_held(&mvm->mutex)); 43724afba76SLiad Kaufman if (IS_ERR_OR_NULL(sta)) 43824afba76SLiad Kaufman continue; 43924afba76SLiad Kaufman 44024afba76SLiad Kaufman mvmsta = iwl_mvm_sta_from_mac80211(sta); 44124afba76SLiad Kaufman deferred_tid_traffic = mvmsta->deferred_traffic_tid_map; 44224afba76SLiad Kaufman 44324afba76SLiad Kaufman for_each_set_bit(tid, &deferred_tid_traffic, 44424afba76SLiad Kaufman IWL_MAX_TID_COUNT + 1) 44524afba76SLiad Kaufman iwl_mvm_tx_deferred_stream(mvm, sta, tid); 44624afba76SLiad Kaufman } 44724afba76SLiad Kaufman 44824afba76SLiad Kaufman mutex_unlock(&mvm->mutex); 44924afba76SLiad Kaufman } 45024afba76SLiad Kaufman 45124afba76SLiad Kaufman static int iwl_mvm_reserve_sta_stream(struct iwl_mvm *mvm, 452d5216a28SLiad Kaufman struct ieee80211_sta *sta, 453d5216a28SLiad Kaufman enum nl80211_iftype vif_type) 45424afba76SLiad Kaufman { 45524afba76SLiad Kaufman struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta); 45624afba76SLiad Kaufman int queue; 45724afba76SLiad Kaufman 45824afba76SLiad Kaufman spin_lock_bh(&mvm->queue_info_lock); 45924afba76SLiad Kaufman 46024afba76SLiad Kaufman /* Make sure we have free resources for this STA */ 461d5216a28SLiad Kaufman if (vif_type == NL80211_IFTYPE_STATION && !sta->tdls && 462d5216a28SLiad Kaufman !mvm->queue_info[IWL_MVM_DQA_BSS_CLIENT_QUEUE].hw_queue_refcount && 463d5216a28SLiad Kaufman !mvm->queue_info[IWL_MVM_DQA_BSS_CLIENT_QUEUE].setup_reserved) 464d5216a28SLiad Kaufman queue = IWL_MVM_DQA_BSS_CLIENT_QUEUE; 465d5216a28SLiad Kaufman else 46624afba76SLiad Kaufman queue = iwl_mvm_find_free_queue(mvm, IWL_MVM_DQA_MIN_DATA_QUEUE, 46724afba76SLiad Kaufman IWL_MVM_DQA_MAX_DATA_QUEUE); 46824afba76SLiad Kaufman if (queue < 0) { 46924afba76SLiad Kaufman spin_unlock_bh(&mvm->queue_info_lock); 47024afba76SLiad Kaufman IWL_ERR(mvm, "No available queues for new station\n"); 47124afba76SLiad Kaufman return -ENOSPC; 47224afba76SLiad Kaufman } 47324afba76SLiad Kaufman mvm->queue_info[queue].setup_reserved = true; 47424afba76SLiad Kaufman 47524afba76SLiad Kaufman spin_unlock_bh(&mvm->queue_info_lock); 47624afba76SLiad Kaufman 47724afba76SLiad Kaufman mvmsta->reserved_queue = queue; 47824afba76SLiad Kaufman 47924afba76SLiad Kaufman IWL_DEBUG_TX_QUEUES(mvm, "Reserving data queue #%d for sta_id %d\n", 48024afba76SLiad Kaufman queue, mvmsta->sta_id); 48124afba76SLiad Kaufman 48224afba76SLiad Kaufman return 0; 48324afba76SLiad Kaufman } 48424afba76SLiad Kaufman 485e705c121SKalle Valo int iwl_mvm_add_sta(struct iwl_mvm *mvm, 486e705c121SKalle Valo struct ieee80211_vif *vif, 487e705c121SKalle Valo struct ieee80211_sta *sta) 488e705c121SKalle Valo { 489e705c121SKalle Valo struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 490e705c121SKalle Valo struct iwl_mvm_sta *mvm_sta = iwl_mvm_sta_from_mac80211(sta); 491a571f5f6SSara Sharon struct iwl_mvm_rxq_dup_data *dup_data; 492e705c121SKalle Valo int i, ret, sta_id; 493e705c121SKalle Valo 494e705c121SKalle Valo lockdep_assert_held(&mvm->mutex); 495e705c121SKalle Valo 496e705c121SKalle Valo if (!test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status)) 497e705c121SKalle Valo sta_id = iwl_mvm_find_free_sta_id(mvm, 498e705c121SKalle Valo ieee80211_vif_type_p2p(vif)); 499e705c121SKalle Valo else 500e705c121SKalle Valo sta_id = mvm_sta->sta_id; 501e705c121SKalle Valo 502e705c121SKalle Valo if (sta_id == IWL_MVM_STATION_COUNT) 503e705c121SKalle Valo return -ENOSPC; 504e705c121SKalle Valo 505e705c121SKalle Valo spin_lock_init(&mvm_sta->lock); 506e705c121SKalle Valo 507e705c121SKalle Valo mvm_sta->sta_id = sta_id; 508e705c121SKalle Valo mvm_sta->mac_id_n_color = FW_CMD_ID_AND_COLOR(mvmvif->id, 509e705c121SKalle Valo mvmvif->color); 510e705c121SKalle Valo mvm_sta->vif = vif; 511e705c121SKalle Valo mvm_sta->max_agg_bufsize = LINK_QUAL_AGG_FRAME_LIMIT_DEF; 512e705c121SKalle Valo mvm_sta->tx_protection = 0; 513e705c121SKalle Valo mvm_sta->tt_tx_protection = false; 514e705c121SKalle Valo 515e705c121SKalle Valo /* HW restart, don't assume the memory has been zeroed */ 516e705c121SKalle Valo atomic_set(&mvm->pending_frames[sta_id], 0); 517e705c121SKalle Valo mvm_sta->tid_disable_agg = 0xffff; /* No aggs at first */ 518e705c121SKalle Valo mvm_sta->tfd_queue_msk = 0; 519e705c121SKalle Valo 520e705c121SKalle Valo /* allocate new queues for a TDLS station */ 521e705c121SKalle Valo if (sta->tdls) { 522e705c121SKalle Valo ret = iwl_mvm_tdls_sta_init(mvm, sta); 523e705c121SKalle Valo if (ret) 524e705c121SKalle Valo return ret; 52524afba76SLiad Kaufman } else if (!iwl_mvm_is_dqa_supported(mvm)) { 526e705c121SKalle Valo for (i = 0; i < IEEE80211_NUM_ACS; i++) 527e705c121SKalle Valo if (vif->hw_queue[i] != IEEE80211_INVAL_HW_QUEUE) 528e705c121SKalle Valo mvm_sta->tfd_queue_msk |= BIT(vif->hw_queue[i]); 529e705c121SKalle Valo } 530e705c121SKalle Valo 531e705c121SKalle Valo /* for HW restart - reset everything but the sequence number */ 53224afba76SLiad Kaufman for (i = 0; i <= IWL_MAX_TID_COUNT; i++) { 533e705c121SKalle Valo u16 seq = mvm_sta->tid_data[i].seq_number; 534e705c121SKalle Valo memset(&mvm_sta->tid_data[i], 0, sizeof(mvm_sta->tid_data[i])); 535e705c121SKalle Valo mvm_sta->tid_data[i].seq_number = seq; 53624afba76SLiad Kaufman 53724afba76SLiad Kaufman if (!iwl_mvm_is_dqa_supported(mvm)) 53824afba76SLiad Kaufman continue; 53924afba76SLiad Kaufman 54024afba76SLiad Kaufman /* 54124afba76SLiad Kaufman * Mark all queues for this STA as unallocated and defer TX 54224afba76SLiad Kaufman * frames until the queue is allocated 54324afba76SLiad Kaufman */ 54424afba76SLiad Kaufman mvm_sta->tid_data[i].txq_id = IEEE80211_INVAL_HW_QUEUE; 54524afba76SLiad Kaufman skb_queue_head_init(&mvm_sta->tid_data[i].deferred_tx_frames); 546e705c121SKalle Valo } 54724afba76SLiad Kaufman mvm_sta->deferred_traffic_tid_map = 0; 548e705c121SKalle Valo mvm_sta->agg_tids = 0; 549e705c121SKalle Valo 550a571f5f6SSara Sharon if (iwl_mvm_has_new_rx_api(mvm) && 551a571f5f6SSara Sharon !test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status)) { 552a571f5f6SSara Sharon dup_data = kcalloc(mvm->trans->num_rx_queues, 553a571f5f6SSara Sharon sizeof(*dup_data), 554a571f5f6SSara Sharon GFP_KERNEL); 555a571f5f6SSara Sharon if (!dup_data) 556a571f5f6SSara Sharon return -ENOMEM; 557a571f5f6SSara Sharon mvm_sta->dup_data = dup_data; 558a571f5f6SSara Sharon } 559a571f5f6SSara Sharon 56024afba76SLiad Kaufman if (iwl_mvm_is_dqa_supported(mvm)) { 561d5216a28SLiad Kaufman ret = iwl_mvm_reserve_sta_stream(mvm, sta, 562d5216a28SLiad Kaufman ieee80211_vif_type_p2p(vif)); 56324afba76SLiad Kaufman if (ret) 56424afba76SLiad Kaufman goto err; 56524afba76SLiad Kaufman } 56624afba76SLiad Kaufman 56724afba76SLiad Kaufman ret = iwl_mvm_sta_send_to_fw(mvm, sta, false, 0); 568e705c121SKalle Valo if (ret) 569e705c121SKalle Valo goto err; 570e705c121SKalle Valo 571e705c121SKalle Valo if (vif->type == NL80211_IFTYPE_STATION) { 572e705c121SKalle Valo if (!sta->tdls) { 573e705c121SKalle Valo WARN_ON(mvmvif->ap_sta_id != IWL_MVM_STATION_COUNT); 574e705c121SKalle Valo mvmvif->ap_sta_id = sta_id; 575e705c121SKalle Valo } else { 576e705c121SKalle Valo WARN_ON(mvmvif->ap_sta_id == IWL_MVM_STATION_COUNT); 577e705c121SKalle Valo } 578e705c121SKalle Valo } 579e705c121SKalle Valo 580e705c121SKalle Valo rcu_assign_pointer(mvm->fw_id_to_mac_id[sta_id], sta); 581e705c121SKalle Valo 582e705c121SKalle Valo return 0; 583e705c121SKalle Valo 584e705c121SKalle Valo err: 585e705c121SKalle Valo iwl_mvm_tdls_sta_deinit(mvm, sta); 586e705c121SKalle Valo return ret; 587e705c121SKalle Valo } 588e705c121SKalle Valo 589e705c121SKalle Valo int iwl_mvm_update_sta(struct iwl_mvm *mvm, 590e705c121SKalle Valo struct ieee80211_vif *vif, 591e705c121SKalle Valo struct ieee80211_sta *sta) 592e705c121SKalle Valo { 59324afba76SLiad Kaufman return iwl_mvm_sta_send_to_fw(mvm, sta, true, 0); 594e705c121SKalle Valo } 595e705c121SKalle Valo 596e705c121SKalle Valo int iwl_mvm_drain_sta(struct iwl_mvm *mvm, struct iwl_mvm_sta *mvmsta, 597e705c121SKalle Valo bool drain) 598e705c121SKalle Valo { 599e705c121SKalle Valo struct iwl_mvm_add_sta_cmd cmd = {}; 600e705c121SKalle Valo int ret; 601e705c121SKalle Valo u32 status; 602e705c121SKalle Valo 603e705c121SKalle Valo lockdep_assert_held(&mvm->mutex); 604e705c121SKalle Valo 605e705c121SKalle Valo cmd.mac_id_n_color = cpu_to_le32(mvmsta->mac_id_n_color); 606e705c121SKalle Valo cmd.sta_id = mvmsta->sta_id; 607e705c121SKalle Valo cmd.add_modify = STA_MODE_MODIFY; 608e705c121SKalle Valo cmd.station_flags = drain ? cpu_to_le32(STA_FLG_DRAIN_FLOW) : 0; 609e705c121SKalle Valo cmd.station_flags_msk = cpu_to_le32(STA_FLG_DRAIN_FLOW); 610e705c121SKalle Valo 611e705c121SKalle Valo status = ADD_STA_SUCCESS; 612854c5705SSara Sharon ret = iwl_mvm_send_cmd_pdu_status(mvm, ADD_STA, 613854c5705SSara Sharon iwl_mvm_add_sta_cmd_size(mvm), 614e705c121SKalle Valo &cmd, &status); 615e705c121SKalle Valo if (ret) 616e705c121SKalle Valo return ret; 617e705c121SKalle Valo 618837c4da9SSara Sharon switch (status & IWL_ADD_STA_STATUS_MASK) { 619e705c121SKalle Valo case ADD_STA_SUCCESS: 620e705c121SKalle Valo IWL_DEBUG_INFO(mvm, "Frames for staid %d will drained in fw\n", 621e705c121SKalle Valo mvmsta->sta_id); 622e705c121SKalle Valo break; 623e705c121SKalle Valo default: 624e705c121SKalle Valo ret = -EIO; 625e705c121SKalle Valo IWL_ERR(mvm, "Couldn't drain frames for staid %d\n", 626e705c121SKalle Valo mvmsta->sta_id); 627e705c121SKalle Valo break; 628e705c121SKalle Valo } 629e705c121SKalle Valo 630e705c121SKalle Valo return ret; 631e705c121SKalle Valo } 632e705c121SKalle Valo 633e705c121SKalle Valo /* 634e705c121SKalle Valo * Remove a station from the FW table. Before sending the command to remove 635e705c121SKalle Valo * the station validate that the station is indeed known to the driver (sanity 636e705c121SKalle Valo * only). 637e705c121SKalle Valo */ 638e705c121SKalle Valo static int iwl_mvm_rm_sta_common(struct iwl_mvm *mvm, u8 sta_id) 639e705c121SKalle Valo { 640e705c121SKalle Valo struct ieee80211_sta *sta; 641e705c121SKalle Valo struct iwl_mvm_rm_sta_cmd rm_sta_cmd = { 642e705c121SKalle Valo .sta_id = sta_id, 643e705c121SKalle Valo }; 644e705c121SKalle Valo int ret; 645e705c121SKalle Valo 646e705c121SKalle Valo sta = rcu_dereference_protected(mvm->fw_id_to_mac_id[sta_id], 647e705c121SKalle Valo lockdep_is_held(&mvm->mutex)); 648e705c121SKalle Valo 649e705c121SKalle Valo /* Note: internal stations are marked as error values */ 650e705c121SKalle Valo if (!sta) { 651e705c121SKalle Valo IWL_ERR(mvm, "Invalid station id\n"); 652e705c121SKalle Valo return -EINVAL; 653e705c121SKalle Valo } 654e705c121SKalle Valo 655e705c121SKalle Valo ret = iwl_mvm_send_cmd_pdu(mvm, REMOVE_STA, 0, 656e705c121SKalle Valo sizeof(rm_sta_cmd), &rm_sta_cmd); 657e705c121SKalle Valo if (ret) { 658e705c121SKalle Valo IWL_ERR(mvm, "Failed to remove station. Id=%d\n", sta_id); 659e705c121SKalle Valo return ret; 660e705c121SKalle Valo } 661e705c121SKalle Valo 662e705c121SKalle Valo return 0; 663e705c121SKalle Valo } 664e705c121SKalle Valo 665e705c121SKalle Valo void iwl_mvm_sta_drained_wk(struct work_struct *wk) 666e705c121SKalle Valo { 667e705c121SKalle Valo struct iwl_mvm *mvm = container_of(wk, struct iwl_mvm, sta_drained_wk); 668e705c121SKalle Valo u8 sta_id; 669e705c121SKalle Valo 670e705c121SKalle Valo /* 671e705c121SKalle Valo * The mutex is needed because of the SYNC cmd, but not only: if the 672e705c121SKalle Valo * work would run concurrently with iwl_mvm_rm_sta, it would run before 673e705c121SKalle Valo * iwl_mvm_rm_sta sets the station as busy, and exit. Then 674e705c121SKalle Valo * iwl_mvm_rm_sta would set the station as busy, and nobody will clean 675e705c121SKalle Valo * that later. 676e705c121SKalle Valo */ 677e705c121SKalle Valo mutex_lock(&mvm->mutex); 678e705c121SKalle Valo 679e705c121SKalle Valo for_each_set_bit(sta_id, mvm->sta_drained, IWL_MVM_STATION_COUNT) { 680e705c121SKalle Valo int ret; 681e705c121SKalle Valo struct ieee80211_sta *sta = 682e705c121SKalle Valo rcu_dereference_protected(mvm->fw_id_to_mac_id[sta_id], 683e705c121SKalle Valo lockdep_is_held(&mvm->mutex)); 684e705c121SKalle Valo 685e705c121SKalle Valo /* 686e705c121SKalle Valo * This station is in use or RCU-removed; the latter happens in 687e705c121SKalle Valo * managed mode, where mac80211 removes the station before we 688e705c121SKalle Valo * can remove it from firmware (we can only do that after the 689e705c121SKalle Valo * MAC is marked unassociated), and possibly while the deauth 690e705c121SKalle Valo * frame to disconnect from the AP is still queued. Then, the 691e705c121SKalle Valo * station pointer is -ENOENT when the last skb is reclaimed. 692e705c121SKalle Valo */ 693e705c121SKalle Valo if (!IS_ERR(sta) || PTR_ERR(sta) == -ENOENT) 694e705c121SKalle Valo continue; 695e705c121SKalle Valo 696e705c121SKalle Valo if (PTR_ERR(sta) == -EINVAL) { 697e705c121SKalle Valo IWL_ERR(mvm, "Drained sta %d, but it is internal?\n", 698e705c121SKalle Valo sta_id); 699e705c121SKalle Valo continue; 700e705c121SKalle Valo } 701e705c121SKalle Valo 702e705c121SKalle Valo if (!sta) { 703e705c121SKalle Valo IWL_ERR(mvm, "Drained sta %d, but it was NULL?\n", 704e705c121SKalle Valo sta_id); 705e705c121SKalle Valo continue; 706e705c121SKalle Valo } 707e705c121SKalle Valo 708e705c121SKalle Valo WARN_ON(PTR_ERR(sta) != -EBUSY); 709e705c121SKalle Valo /* This station was removed and we waited until it got drained, 710e705c121SKalle Valo * we can now proceed and remove it. 711e705c121SKalle Valo */ 712e705c121SKalle Valo ret = iwl_mvm_rm_sta_common(mvm, sta_id); 713e705c121SKalle Valo if (ret) { 714e705c121SKalle Valo IWL_ERR(mvm, 715e705c121SKalle Valo "Couldn't remove sta %d after it was drained\n", 716e705c121SKalle Valo sta_id); 717e705c121SKalle Valo continue; 718e705c121SKalle Valo } 719e705c121SKalle Valo RCU_INIT_POINTER(mvm->fw_id_to_mac_id[sta_id], NULL); 720e705c121SKalle Valo clear_bit(sta_id, mvm->sta_drained); 721e705c121SKalle Valo 722e705c121SKalle Valo if (mvm->tfd_drained[sta_id]) { 723e705c121SKalle Valo unsigned long i, msk = mvm->tfd_drained[sta_id]; 724e705c121SKalle Valo 725e705c121SKalle Valo for_each_set_bit(i, &msk, sizeof(msk) * BITS_PER_BYTE) 726e705c121SKalle Valo iwl_mvm_disable_txq(mvm, i, i, 727e705c121SKalle Valo IWL_MAX_TID_COUNT, 0); 728e705c121SKalle Valo 729e705c121SKalle Valo mvm->tfd_drained[sta_id] = 0; 730e705c121SKalle Valo IWL_DEBUG_TDLS(mvm, "Drained sta %d, with queues %ld\n", 731e705c121SKalle Valo sta_id, msk); 732e705c121SKalle Valo } 733e705c121SKalle Valo } 734e705c121SKalle Valo 735e705c121SKalle Valo mutex_unlock(&mvm->mutex); 736e705c121SKalle Valo } 737e705c121SKalle Valo 73824afba76SLiad Kaufman static void iwl_mvm_disable_sta_queues(struct iwl_mvm *mvm, 73924afba76SLiad Kaufman struct ieee80211_vif *vif, 74024afba76SLiad Kaufman struct iwl_mvm_sta *mvm_sta) 74124afba76SLiad Kaufman { 74224afba76SLiad Kaufman int ac; 74324afba76SLiad Kaufman int i; 74424afba76SLiad Kaufman 74524afba76SLiad Kaufman lockdep_assert_held(&mvm->mutex); 74624afba76SLiad Kaufman 74724afba76SLiad Kaufman for (i = 0; i < ARRAY_SIZE(mvm_sta->tid_data); i++) { 74824afba76SLiad Kaufman if (mvm_sta->tid_data[i].txq_id == IEEE80211_INVAL_HW_QUEUE) 74924afba76SLiad Kaufman continue; 75024afba76SLiad Kaufman 75124afba76SLiad Kaufman ac = iwl_mvm_tid_to_ac_queue(i); 75224afba76SLiad Kaufman iwl_mvm_disable_txq(mvm, mvm_sta->tid_data[i].txq_id, 75324afba76SLiad Kaufman vif->hw_queue[ac], i, 0); 75424afba76SLiad Kaufman mvm_sta->tid_data[i].txq_id = IEEE80211_INVAL_HW_QUEUE; 75524afba76SLiad Kaufman } 75624afba76SLiad Kaufman } 75724afba76SLiad Kaufman 758e705c121SKalle Valo int iwl_mvm_rm_sta(struct iwl_mvm *mvm, 759e705c121SKalle Valo struct ieee80211_vif *vif, 760e705c121SKalle Valo struct ieee80211_sta *sta) 761e705c121SKalle Valo { 762e705c121SKalle Valo struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 763e705c121SKalle Valo struct iwl_mvm_sta *mvm_sta = iwl_mvm_sta_from_mac80211(sta); 764e705c121SKalle Valo int ret; 765e705c121SKalle Valo 766e705c121SKalle Valo lockdep_assert_held(&mvm->mutex); 767e705c121SKalle Valo 768a571f5f6SSara Sharon if (iwl_mvm_has_new_rx_api(mvm)) 769a571f5f6SSara Sharon kfree(mvm_sta->dup_data); 770a571f5f6SSara Sharon 771e705c121SKalle Valo if (vif->type == NL80211_IFTYPE_STATION && 772e705c121SKalle Valo mvmvif->ap_sta_id == mvm_sta->sta_id) { 773e705c121SKalle Valo ret = iwl_mvm_drain_sta(mvm, mvm_sta, true); 774e705c121SKalle Valo if (ret) 775e705c121SKalle Valo return ret; 776e705c121SKalle Valo /* flush its queues here since we are freeing mvm_sta */ 777e705c121SKalle Valo ret = iwl_mvm_flush_tx_path(mvm, mvm_sta->tfd_queue_msk, 0); 778e705c121SKalle Valo if (ret) 779e705c121SKalle Valo return ret; 780e705c121SKalle Valo ret = iwl_trans_wait_tx_queue_empty(mvm->trans, 781e705c121SKalle Valo mvm_sta->tfd_queue_msk); 782e705c121SKalle Valo if (ret) 783e705c121SKalle Valo return ret; 784e705c121SKalle Valo ret = iwl_mvm_drain_sta(mvm, mvm_sta, false); 785e705c121SKalle Valo 78624afba76SLiad Kaufman /* If DQA is supported - the queues can be disabled now */ 78724afba76SLiad Kaufman if (iwl_mvm_is_dqa_supported(mvm)) 78824afba76SLiad Kaufman iwl_mvm_disable_sta_queues(mvm, vif, mvm_sta); 78924afba76SLiad Kaufman 790e705c121SKalle Valo /* if we are associated - we can't remove the AP STA now */ 791e705c121SKalle Valo if (vif->bss_conf.assoc) 792e705c121SKalle Valo return ret; 793e705c121SKalle Valo 794e705c121SKalle Valo /* unassoc - go ahead - remove the AP STA now */ 795e705c121SKalle Valo mvmvif->ap_sta_id = IWL_MVM_STATION_COUNT; 796e705c121SKalle Valo 797e705c121SKalle Valo /* clear d0i3_ap_sta_id if no longer relevant */ 798e705c121SKalle Valo if (mvm->d0i3_ap_sta_id == mvm_sta->sta_id) 799e705c121SKalle Valo mvm->d0i3_ap_sta_id = IWL_MVM_STATION_COUNT; 800e705c121SKalle Valo } 801e705c121SKalle Valo 802e705c121SKalle Valo /* 803e705c121SKalle Valo * This shouldn't happen - the TDLS channel switch should be canceled 804e705c121SKalle Valo * before the STA is removed. 805e705c121SKalle Valo */ 806e705c121SKalle Valo if (WARN_ON_ONCE(mvm->tdls_cs.peer.sta_id == mvm_sta->sta_id)) { 807e705c121SKalle Valo mvm->tdls_cs.peer.sta_id = IWL_MVM_STATION_COUNT; 808e705c121SKalle Valo cancel_delayed_work(&mvm->tdls_cs.dwork); 809e705c121SKalle Valo } 810e705c121SKalle Valo 811e705c121SKalle Valo /* 812e705c121SKalle Valo * Make sure that the tx response code sees the station as -EBUSY and 813e705c121SKalle Valo * calls the drain worker. 814e705c121SKalle Valo */ 815e705c121SKalle Valo spin_lock_bh(&mvm_sta->lock); 816e705c121SKalle Valo /* 817e705c121SKalle Valo * There are frames pending on the AC queues for this station. 818e705c121SKalle Valo * We need to wait until all the frames are drained... 819e705c121SKalle Valo */ 820e705c121SKalle Valo if (atomic_read(&mvm->pending_frames[mvm_sta->sta_id])) { 821e705c121SKalle Valo rcu_assign_pointer(mvm->fw_id_to_mac_id[mvm_sta->sta_id], 822e705c121SKalle Valo ERR_PTR(-EBUSY)); 823e705c121SKalle Valo spin_unlock_bh(&mvm_sta->lock); 824e705c121SKalle Valo 825e705c121SKalle Valo /* disable TDLS sta queues on drain complete */ 826e705c121SKalle Valo if (sta->tdls) { 827e705c121SKalle Valo mvm->tfd_drained[mvm_sta->sta_id] = 828e705c121SKalle Valo mvm_sta->tfd_queue_msk; 829e705c121SKalle Valo IWL_DEBUG_TDLS(mvm, "Draining TDLS sta %d\n", 830e705c121SKalle Valo mvm_sta->sta_id); 831e705c121SKalle Valo } 832e705c121SKalle Valo 833e705c121SKalle Valo ret = iwl_mvm_drain_sta(mvm, mvm_sta, true); 834e705c121SKalle Valo } else { 835e705c121SKalle Valo spin_unlock_bh(&mvm_sta->lock); 836e705c121SKalle Valo 837e705c121SKalle Valo if (sta->tdls) 838e705c121SKalle Valo iwl_mvm_tdls_sta_deinit(mvm, sta); 839e705c121SKalle Valo 840e705c121SKalle Valo ret = iwl_mvm_rm_sta_common(mvm, mvm_sta->sta_id); 841e705c121SKalle Valo RCU_INIT_POINTER(mvm->fw_id_to_mac_id[mvm_sta->sta_id], NULL); 842e705c121SKalle Valo } 843e705c121SKalle Valo 844e705c121SKalle Valo return ret; 845e705c121SKalle Valo } 846e705c121SKalle Valo 847e705c121SKalle Valo int iwl_mvm_rm_sta_id(struct iwl_mvm *mvm, 848e705c121SKalle Valo struct ieee80211_vif *vif, 849e705c121SKalle Valo u8 sta_id) 850e705c121SKalle Valo { 851e705c121SKalle Valo int ret = iwl_mvm_rm_sta_common(mvm, sta_id); 852e705c121SKalle Valo 853e705c121SKalle Valo lockdep_assert_held(&mvm->mutex); 854e705c121SKalle Valo 855e705c121SKalle Valo RCU_INIT_POINTER(mvm->fw_id_to_mac_id[sta_id], NULL); 856e705c121SKalle Valo return ret; 857e705c121SKalle Valo } 858e705c121SKalle Valo 8590e39eb03SChaya Rachel Ivgi int iwl_mvm_allocate_int_sta(struct iwl_mvm *mvm, 860e705c121SKalle Valo struct iwl_mvm_int_sta *sta, 861e705c121SKalle Valo u32 qmask, enum nl80211_iftype iftype) 862e705c121SKalle Valo { 863e705c121SKalle Valo if (!test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status)) { 864e705c121SKalle Valo sta->sta_id = iwl_mvm_find_free_sta_id(mvm, iftype); 865e705c121SKalle Valo if (WARN_ON_ONCE(sta->sta_id == IWL_MVM_STATION_COUNT)) 866e705c121SKalle Valo return -ENOSPC; 867e705c121SKalle Valo } 868e705c121SKalle Valo 869e705c121SKalle Valo sta->tfd_queue_msk = qmask; 870e705c121SKalle Valo 871e705c121SKalle Valo /* put a non-NULL value so iterating over the stations won't stop */ 872e705c121SKalle Valo rcu_assign_pointer(mvm->fw_id_to_mac_id[sta->sta_id], ERR_PTR(-EINVAL)); 873e705c121SKalle Valo return 0; 874e705c121SKalle Valo } 875e705c121SKalle Valo 876e705c121SKalle Valo static void iwl_mvm_dealloc_int_sta(struct iwl_mvm *mvm, 877e705c121SKalle Valo struct iwl_mvm_int_sta *sta) 878e705c121SKalle Valo { 879e705c121SKalle Valo RCU_INIT_POINTER(mvm->fw_id_to_mac_id[sta->sta_id], NULL); 880e705c121SKalle Valo memset(sta, 0, sizeof(struct iwl_mvm_int_sta)); 881e705c121SKalle Valo sta->sta_id = IWL_MVM_STATION_COUNT; 882e705c121SKalle Valo } 883e705c121SKalle Valo 884e705c121SKalle Valo static int iwl_mvm_add_int_sta_common(struct iwl_mvm *mvm, 885e705c121SKalle Valo struct iwl_mvm_int_sta *sta, 886e705c121SKalle Valo const u8 *addr, 887e705c121SKalle Valo u16 mac_id, u16 color) 888e705c121SKalle Valo { 889e705c121SKalle Valo struct iwl_mvm_add_sta_cmd cmd; 890e705c121SKalle Valo int ret; 891e705c121SKalle Valo u32 status; 892e705c121SKalle Valo 893e705c121SKalle Valo lockdep_assert_held(&mvm->mutex); 894e705c121SKalle Valo 895e705c121SKalle Valo memset(&cmd, 0, sizeof(cmd)); 896e705c121SKalle Valo cmd.sta_id = sta->sta_id; 897e705c121SKalle Valo cmd.mac_id_n_color = cpu_to_le32(FW_CMD_ID_AND_COLOR(mac_id, 898e705c121SKalle Valo color)); 899e705c121SKalle Valo 900e705c121SKalle Valo cmd.tfd_queue_msk = cpu_to_le32(sta->tfd_queue_msk); 901cf0cda19SLiad Kaufman cmd.tid_disable_tx = cpu_to_le16(0xffff); 902e705c121SKalle Valo 903e705c121SKalle Valo if (addr) 904e705c121SKalle Valo memcpy(cmd.addr, addr, ETH_ALEN); 905e705c121SKalle Valo 906854c5705SSara Sharon ret = iwl_mvm_send_cmd_pdu_status(mvm, ADD_STA, 907854c5705SSara Sharon iwl_mvm_add_sta_cmd_size(mvm), 908e705c121SKalle Valo &cmd, &status); 909e705c121SKalle Valo if (ret) 910e705c121SKalle Valo return ret; 911e705c121SKalle Valo 912837c4da9SSara Sharon switch (status & IWL_ADD_STA_STATUS_MASK) { 913e705c121SKalle Valo case ADD_STA_SUCCESS: 914e705c121SKalle Valo IWL_DEBUG_INFO(mvm, "Internal station added.\n"); 915e705c121SKalle Valo return 0; 916e705c121SKalle Valo default: 917e705c121SKalle Valo ret = -EIO; 918e705c121SKalle Valo IWL_ERR(mvm, "Add internal station failed, status=0x%x\n", 919e705c121SKalle Valo status); 920e705c121SKalle Valo break; 921e705c121SKalle Valo } 922e705c121SKalle Valo return ret; 923e705c121SKalle Valo } 924e705c121SKalle Valo 925e705c121SKalle Valo int iwl_mvm_add_aux_sta(struct iwl_mvm *mvm) 926e705c121SKalle Valo { 927e705c121SKalle Valo unsigned int wdg_timeout = iwlmvm_mod_params.tfd_q_hang_detect ? 928e705c121SKalle Valo mvm->cfg->base_params->wd_timeout : 929e705c121SKalle Valo IWL_WATCHDOG_DISABLED; 930e705c121SKalle Valo int ret; 931e705c121SKalle Valo 932e705c121SKalle Valo lockdep_assert_held(&mvm->mutex); 933e705c121SKalle Valo 934e705c121SKalle Valo /* Map Aux queue to fifo - needs to happen before adding Aux station */ 935e705c121SKalle Valo iwl_mvm_enable_ac_txq(mvm, mvm->aux_queue, mvm->aux_queue, 936e705c121SKalle Valo IWL_MVM_TX_FIFO_MCAST, 0, wdg_timeout); 937e705c121SKalle Valo 938e705c121SKalle Valo /* Allocate aux station and assign to it the aux queue */ 939e705c121SKalle Valo ret = iwl_mvm_allocate_int_sta(mvm, &mvm->aux_sta, BIT(mvm->aux_queue), 940e705c121SKalle Valo NL80211_IFTYPE_UNSPECIFIED); 941e705c121SKalle Valo if (ret) 942e705c121SKalle Valo return ret; 943e705c121SKalle Valo 944e705c121SKalle Valo ret = iwl_mvm_add_int_sta_common(mvm, &mvm->aux_sta, NULL, 945e705c121SKalle Valo MAC_INDEX_AUX, 0); 946e705c121SKalle Valo 947e705c121SKalle Valo if (ret) 948e705c121SKalle Valo iwl_mvm_dealloc_int_sta(mvm, &mvm->aux_sta); 949e705c121SKalle Valo return ret; 950e705c121SKalle Valo } 951e705c121SKalle Valo 9520e39eb03SChaya Rachel Ivgi int iwl_mvm_add_snif_sta(struct iwl_mvm *mvm, struct ieee80211_vif *vif) 9530e39eb03SChaya Rachel Ivgi { 9540e39eb03SChaya Rachel Ivgi struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 9550e39eb03SChaya Rachel Ivgi 9560e39eb03SChaya Rachel Ivgi lockdep_assert_held(&mvm->mutex); 9570e39eb03SChaya Rachel Ivgi return iwl_mvm_add_int_sta_common(mvm, &mvm->snif_sta, vif->addr, 9580e39eb03SChaya Rachel Ivgi mvmvif->id, 0); 9590e39eb03SChaya Rachel Ivgi } 9600e39eb03SChaya Rachel Ivgi 9610e39eb03SChaya Rachel Ivgi int iwl_mvm_rm_snif_sta(struct iwl_mvm *mvm, struct ieee80211_vif *vif) 9620e39eb03SChaya Rachel Ivgi { 9630e39eb03SChaya Rachel Ivgi int ret; 9640e39eb03SChaya Rachel Ivgi 9650e39eb03SChaya Rachel Ivgi lockdep_assert_held(&mvm->mutex); 9660e39eb03SChaya Rachel Ivgi 9670e39eb03SChaya Rachel Ivgi ret = iwl_mvm_rm_sta_common(mvm, mvm->snif_sta.sta_id); 9680e39eb03SChaya Rachel Ivgi if (ret) 9690e39eb03SChaya Rachel Ivgi IWL_WARN(mvm, "Failed sending remove station\n"); 9700e39eb03SChaya Rachel Ivgi 9710e39eb03SChaya Rachel Ivgi return ret; 9720e39eb03SChaya Rachel Ivgi } 9730e39eb03SChaya Rachel Ivgi 9740e39eb03SChaya Rachel Ivgi void iwl_mvm_dealloc_snif_sta(struct iwl_mvm *mvm) 9750e39eb03SChaya Rachel Ivgi { 9760e39eb03SChaya Rachel Ivgi iwl_mvm_dealloc_int_sta(mvm, &mvm->snif_sta); 9770e39eb03SChaya Rachel Ivgi } 9780e39eb03SChaya Rachel Ivgi 979e705c121SKalle Valo void iwl_mvm_del_aux_sta(struct iwl_mvm *mvm) 980e705c121SKalle Valo { 981e705c121SKalle Valo lockdep_assert_held(&mvm->mutex); 982e705c121SKalle Valo 983e705c121SKalle Valo iwl_mvm_dealloc_int_sta(mvm, &mvm->aux_sta); 984e705c121SKalle Valo } 985e705c121SKalle Valo 986e705c121SKalle Valo /* 987e705c121SKalle Valo * Send the add station command for the vif's broadcast station. 988e705c121SKalle Valo * Assumes that the station was already allocated. 989e705c121SKalle Valo * 990e705c121SKalle Valo * @mvm: the mvm component 991e705c121SKalle Valo * @vif: the interface to which the broadcast station is added 992e705c121SKalle Valo * @bsta: the broadcast station to add. 993e705c121SKalle Valo */ 994e705c121SKalle Valo int iwl_mvm_send_add_bcast_sta(struct iwl_mvm *mvm, struct ieee80211_vif *vif) 995e705c121SKalle Valo { 996e705c121SKalle Valo struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 997e705c121SKalle Valo struct iwl_mvm_int_sta *bsta = &mvmvif->bcast_sta; 998e705c121SKalle Valo static const u8 _baddr[] = {0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF}; 999e705c121SKalle Valo const u8 *baddr = _baddr; 1000e705c121SKalle Valo 1001e705c121SKalle Valo lockdep_assert_held(&mvm->mutex); 1002e705c121SKalle Valo 1003de24f638SLiad Kaufman if (iwl_mvm_is_dqa_supported(mvm)) { 1004de24f638SLiad Kaufman struct iwl_trans_txq_scd_cfg cfg = { 1005de24f638SLiad Kaufman .fifo = IWL_MVM_TX_FIFO_VO, 1006de24f638SLiad Kaufman .sta_id = mvmvif->bcast_sta.sta_id, 1007de24f638SLiad Kaufman .tid = IWL_MAX_TID_COUNT, 1008de24f638SLiad Kaufman .aggregate = false, 1009de24f638SLiad Kaufman .frame_limit = IWL_FRAME_LIMIT, 1010de24f638SLiad Kaufman }; 1011de24f638SLiad Kaufman unsigned int wdg_timeout = 1012de24f638SLiad Kaufman iwl_mvm_get_wd_timeout(mvm, vif, false, false); 1013de24f638SLiad Kaufman int queue; 1014de24f638SLiad Kaufman 1015de24f638SLiad Kaufman if ((vif->type == NL80211_IFTYPE_AP) && 1016de24f638SLiad Kaufman (mvmvif->bcast_sta.tfd_queue_msk & 1017de24f638SLiad Kaufman BIT(IWL_MVM_DQA_AP_PROBE_RESP_QUEUE))) 1018de24f638SLiad Kaufman queue = IWL_MVM_DQA_AP_PROBE_RESP_QUEUE; 1019de24f638SLiad Kaufman else if (WARN(1, "Missed required TXQ for adding bcast STA\n")) 1020de24f638SLiad Kaufman return -EINVAL; 1021de24f638SLiad Kaufman 1022de24f638SLiad Kaufman iwl_mvm_enable_txq(mvm, queue, vif->hw_queue[0], 0, &cfg, 1023de24f638SLiad Kaufman wdg_timeout); 1024de24f638SLiad Kaufman } 1025de24f638SLiad Kaufman 1026e705c121SKalle Valo if (vif->type == NL80211_IFTYPE_ADHOC) 1027e705c121SKalle Valo baddr = vif->bss_conf.bssid; 1028e705c121SKalle Valo 1029e705c121SKalle Valo if (WARN_ON_ONCE(bsta->sta_id == IWL_MVM_STATION_COUNT)) 1030e705c121SKalle Valo return -ENOSPC; 1031e705c121SKalle Valo 1032e705c121SKalle Valo return iwl_mvm_add_int_sta_common(mvm, bsta, baddr, 1033e705c121SKalle Valo mvmvif->id, mvmvif->color); 1034e705c121SKalle Valo } 1035e705c121SKalle Valo 1036e705c121SKalle Valo /* Send the FW a request to remove the station from it's internal data 1037e705c121SKalle Valo * structures, but DO NOT remove the entry from the local data structures. */ 1038e705c121SKalle Valo int iwl_mvm_send_rm_bcast_sta(struct iwl_mvm *mvm, struct ieee80211_vif *vif) 1039e705c121SKalle Valo { 1040e705c121SKalle Valo struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 1041e705c121SKalle Valo int ret; 1042e705c121SKalle Valo 1043e705c121SKalle Valo lockdep_assert_held(&mvm->mutex); 1044e705c121SKalle Valo 1045e705c121SKalle Valo ret = iwl_mvm_rm_sta_common(mvm, mvmvif->bcast_sta.sta_id); 1046e705c121SKalle Valo if (ret) 1047e705c121SKalle Valo IWL_WARN(mvm, "Failed sending remove station\n"); 1048e705c121SKalle Valo return ret; 1049e705c121SKalle Valo } 1050e705c121SKalle Valo 1051e705c121SKalle Valo int iwl_mvm_alloc_bcast_sta(struct iwl_mvm *mvm, struct ieee80211_vif *vif) 1052e705c121SKalle Valo { 1053e705c121SKalle Valo struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 1054de24f638SLiad Kaufman u32 qmask = 0; 1055e705c121SKalle Valo 1056e705c121SKalle Valo lockdep_assert_held(&mvm->mutex); 1057e705c121SKalle Valo 1058de24f638SLiad Kaufman if (!iwl_mvm_is_dqa_supported(mvm)) 1059e705c121SKalle Valo qmask = iwl_mvm_mac_get_queues_mask(vif); 1060e705c121SKalle Valo 1061de24f638SLiad Kaufman if (vif->type == NL80211_IFTYPE_AP) { 1062e705c121SKalle Valo /* 1063e705c121SKalle Valo * The firmware defines the TFD queue mask to only be relevant 1064e705c121SKalle Valo * for *unicast* queues, so the multicast (CAB) queue shouldn't 1065e705c121SKalle Valo * be included. 1066e705c121SKalle Valo */ 1067e705c121SKalle Valo qmask &= ~BIT(vif->cab_queue); 1068e705c121SKalle Valo 1069de24f638SLiad Kaufman if (iwl_mvm_is_dqa_supported(mvm)) 1070de24f638SLiad Kaufman qmask |= BIT(IWL_MVM_DQA_AP_PROBE_RESP_QUEUE); 1071de24f638SLiad Kaufman } 1072de24f638SLiad Kaufman 1073e705c121SKalle Valo return iwl_mvm_allocate_int_sta(mvm, &mvmvif->bcast_sta, qmask, 1074e705c121SKalle Valo ieee80211_vif_type_p2p(vif)); 1075e705c121SKalle Valo } 1076e705c121SKalle Valo 1077e705c121SKalle Valo /* Allocate a new station entry for the broadcast station to the given vif, 1078e705c121SKalle Valo * and send it to the FW. 1079e705c121SKalle Valo * Note that each P2P mac should have its own broadcast station. 1080e705c121SKalle Valo * 1081e705c121SKalle Valo * @mvm: the mvm component 1082e705c121SKalle Valo * @vif: the interface to which the broadcast station is added 1083e705c121SKalle Valo * @bsta: the broadcast station to add. */ 1084e705c121SKalle Valo int iwl_mvm_add_bcast_sta(struct iwl_mvm *mvm, struct ieee80211_vif *vif) 1085e705c121SKalle Valo { 1086e705c121SKalle Valo struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 1087e705c121SKalle Valo struct iwl_mvm_int_sta *bsta = &mvmvif->bcast_sta; 1088e705c121SKalle Valo int ret; 1089e705c121SKalle Valo 1090e705c121SKalle Valo lockdep_assert_held(&mvm->mutex); 1091e705c121SKalle Valo 1092e705c121SKalle Valo ret = iwl_mvm_alloc_bcast_sta(mvm, vif); 1093e705c121SKalle Valo if (ret) 1094e705c121SKalle Valo return ret; 1095e705c121SKalle Valo 1096e705c121SKalle Valo ret = iwl_mvm_send_add_bcast_sta(mvm, vif); 1097e705c121SKalle Valo 1098e705c121SKalle Valo if (ret) 1099e705c121SKalle Valo iwl_mvm_dealloc_int_sta(mvm, bsta); 1100e705c121SKalle Valo 1101e705c121SKalle Valo return ret; 1102e705c121SKalle Valo } 1103e705c121SKalle Valo 1104e705c121SKalle Valo void iwl_mvm_dealloc_bcast_sta(struct iwl_mvm *mvm, struct ieee80211_vif *vif) 1105e705c121SKalle Valo { 1106e705c121SKalle Valo struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 1107e705c121SKalle Valo 1108e705c121SKalle Valo iwl_mvm_dealloc_int_sta(mvm, &mvmvif->bcast_sta); 1109e705c121SKalle Valo } 1110e705c121SKalle Valo 1111e705c121SKalle Valo /* 1112e705c121SKalle Valo * Send the FW a request to remove the station from it's internal data 1113e705c121SKalle Valo * structures, and in addition remove it from the local data structure. 1114e705c121SKalle Valo */ 1115e705c121SKalle Valo int iwl_mvm_rm_bcast_sta(struct iwl_mvm *mvm, struct ieee80211_vif *vif) 1116e705c121SKalle Valo { 1117e705c121SKalle Valo int ret; 1118e705c121SKalle Valo 1119e705c121SKalle Valo lockdep_assert_held(&mvm->mutex); 1120e705c121SKalle Valo 1121e705c121SKalle Valo ret = iwl_mvm_send_rm_bcast_sta(mvm, vif); 1122e705c121SKalle Valo 1123e705c121SKalle Valo iwl_mvm_dealloc_bcast_sta(mvm, vif); 1124e705c121SKalle Valo 1125e705c121SKalle Valo return ret; 1126e705c121SKalle Valo } 1127e705c121SKalle Valo 1128e705c121SKalle Valo #define IWL_MAX_RX_BA_SESSIONS 16 1129e705c121SKalle Valo 1130e705c121SKalle Valo int iwl_mvm_sta_rx_agg(struct iwl_mvm *mvm, struct ieee80211_sta *sta, 1131854c5705SSara Sharon int tid, u16 ssn, bool start, u8 buf_size) 1132e705c121SKalle Valo { 1133e705c121SKalle Valo struct iwl_mvm_sta *mvm_sta = iwl_mvm_sta_from_mac80211(sta); 1134e705c121SKalle Valo struct iwl_mvm_add_sta_cmd cmd = {}; 1135e705c121SKalle Valo int ret; 1136e705c121SKalle Valo u32 status; 1137e705c121SKalle Valo 1138e705c121SKalle Valo lockdep_assert_held(&mvm->mutex); 1139e705c121SKalle Valo 1140e705c121SKalle Valo if (start && mvm->rx_ba_sessions >= IWL_MAX_RX_BA_SESSIONS) { 1141e705c121SKalle Valo IWL_WARN(mvm, "Not enough RX BA SESSIONS\n"); 1142e705c121SKalle Valo return -ENOSPC; 1143e705c121SKalle Valo } 1144e705c121SKalle Valo 1145e705c121SKalle Valo cmd.mac_id_n_color = cpu_to_le32(mvm_sta->mac_id_n_color); 1146e705c121SKalle Valo cmd.sta_id = mvm_sta->sta_id; 1147e705c121SKalle Valo cmd.add_modify = STA_MODE_MODIFY; 1148e705c121SKalle Valo if (start) { 1149e705c121SKalle Valo cmd.add_immediate_ba_tid = (u8) tid; 1150e705c121SKalle Valo cmd.add_immediate_ba_ssn = cpu_to_le16(ssn); 1151854c5705SSara Sharon cmd.rx_ba_window = cpu_to_le16((u16)buf_size); 1152e705c121SKalle Valo } else { 1153e705c121SKalle Valo cmd.remove_immediate_ba_tid = (u8) tid; 1154e705c121SKalle Valo } 1155e705c121SKalle Valo cmd.modify_mask = start ? STA_MODIFY_ADD_BA_TID : 1156e705c121SKalle Valo STA_MODIFY_REMOVE_BA_TID; 1157e705c121SKalle Valo 1158e705c121SKalle Valo status = ADD_STA_SUCCESS; 1159854c5705SSara Sharon ret = iwl_mvm_send_cmd_pdu_status(mvm, ADD_STA, 1160854c5705SSara Sharon iwl_mvm_add_sta_cmd_size(mvm), 1161e705c121SKalle Valo &cmd, &status); 1162e705c121SKalle Valo if (ret) 1163e705c121SKalle Valo return ret; 1164e705c121SKalle Valo 1165837c4da9SSara Sharon switch (status & IWL_ADD_STA_STATUS_MASK) { 1166e705c121SKalle Valo case ADD_STA_SUCCESS: 1167e705c121SKalle Valo IWL_DEBUG_INFO(mvm, "RX BA Session %sed in fw\n", 1168e705c121SKalle Valo start ? "start" : "stopp"); 1169e705c121SKalle Valo break; 1170e705c121SKalle Valo case ADD_STA_IMMEDIATE_BA_FAILURE: 1171e705c121SKalle Valo IWL_WARN(mvm, "RX BA Session refused by fw\n"); 1172e705c121SKalle Valo ret = -ENOSPC; 1173e705c121SKalle Valo break; 1174e705c121SKalle Valo default: 1175e705c121SKalle Valo ret = -EIO; 1176e705c121SKalle Valo IWL_ERR(mvm, "RX BA Session failed %sing, status 0x%x\n", 1177e705c121SKalle Valo start ? "start" : "stopp", status); 1178e705c121SKalle Valo break; 1179e705c121SKalle Valo } 1180e705c121SKalle Valo 1181e705c121SKalle Valo if (!ret) { 1182e705c121SKalle Valo if (start) 1183e705c121SKalle Valo mvm->rx_ba_sessions++; 1184e705c121SKalle Valo else if (mvm->rx_ba_sessions > 0) 1185e705c121SKalle Valo /* check that restart flow didn't zero the counter */ 1186e705c121SKalle Valo mvm->rx_ba_sessions--; 1187e705c121SKalle Valo } 1188e705c121SKalle Valo 1189e705c121SKalle Valo return ret; 1190e705c121SKalle Valo } 1191e705c121SKalle Valo 1192e705c121SKalle Valo static int iwl_mvm_sta_tx_agg(struct iwl_mvm *mvm, struct ieee80211_sta *sta, 1193e705c121SKalle Valo int tid, u8 queue, bool start) 1194e705c121SKalle Valo { 1195e705c121SKalle Valo struct iwl_mvm_sta *mvm_sta = iwl_mvm_sta_from_mac80211(sta); 1196e705c121SKalle Valo struct iwl_mvm_add_sta_cmd cmd = {}; 1197e705c121SKalle Valo int ret; 1198e705c121SKalle Valo u32 status; 1199e705c121SKalle Valo 1200e705c121SKalle Valo lockdep_assert_held(&mvm->mutex); 1201e705c121SKalle Valo 1202e705c121SKalle Valo if (start) { 1203e705c121SKalle Valo mvm_sta->tfd_queue_msk |= BIT(queue); 1204e705c121SKalle Valo mvm_sta->tid_disable_agg &= ~BIT(tid); 1205e705c121SKalle Valo } else { 1206e705c121SKalle Valo mvm_sta->tfd_queue_msk &= ~BIT(queue); 1207e705c121SKalle Valo mvm_sta->tid_disable_agg |= BIT(tid); 1208e705c121SKalle Valo } 1209e705c121SKalle Valo 1210e705c121SKalle Valo cmd.mac_id_n_color = cpu_to_le32(mvm_sta->mac_id_n_color); 1211e705c121SKalle Valo cmd.sta_id = mvm_sta->sta_id; 1212e705c121SKalle Valo cmd.add_modify = STA_MODE_MODIFY; 1213e705c121SKalle Valo cmd.modify_mask = STA_MODIFY_QUEUES | STA_MODIFY_TID_DISABLE_TX; 1214e705c121SKalle Valo cmd.tfd_queue_msk = cpu_to_le32(mvm_sta->tfd_queue_msk); 1215e705c121SKalle Valo cmd.tid_disable_tx = cpu_to_le16(mvm_sta->tid_disable_agg); 1216e705c121SKalle Valo 1217e705c121SKalle Valo status = ADD_STA_SUCCESS; 1218854c5705SSara Sharon ret = iwl_mvm_send_cmd_pdu_status(mvm, ADD_STA, 1219854c5705SSara Sharon iwl_mvm_add_sta_cmd_size(mvm), 1220e705c121SKalle Valo &cmd, &status); 1221e705c121SKalle Valo if (ret) 1222e705c121SKalle Valo return ret; 1223e705c121SKalle Valo 1224837c4da9SSara Sharon switch (status & IWL_ADD_STA_STATUS_MASK) { 1225e705c121SKalle Valo case ADD_STA_SUCCESS: 1226e705c121SKalle Valo break; 1227e705c121SKalle Valo default: 1228e705c121SKalle Valo ret = -EIO; 1229e705c121SKalle Valo IWL_ERR(mvm, "TX BA Session failed %sing, status 0x%x\n", 1230e705c121SKalle Valo start ? "start" : "stopp", status); 1231e705c121SKalle Valo break; 1232e705c121SKalle Valo } 1233e705c121SKalle Valo 1234e705c121SKalle Valo return ret; 1235e705c121SKalle Valo } 1236e705c121SKalle Valo 1237e705c121SKalle Valo const u8 tid_to_mac80211_ac[] = { 1238e705c121SKalle Valo IEEE80211_AC_BE, 1239e705c121SKalle Valo IEEE80211_AC_BK, 1240e705c121SKalle Valo IEEE80211_AC_BK, 1241e705c121SKalle Valo IEEE80211_AC_BE, 1242e705c121SKalle Valo IEEE80211_AC_VI, 1243e705c121SKalle Valo IEEE80211_AC_VI, 1244e705c121SKalle Valo IEEE80211_AC_VO, 1245e705c121SKalle Valo IEEE80211_AC_VO, 1246e705c121SKalle Valo }; 1247e705c121SKalle Valo 1248e705c121SKalle Valo static const u8 tid_to_ucode_ac[] = { 1249e705c121SKalle Valo AC_BE, 1250e705c121SKalle Valo AC_BK, 1251e705c121SKalle Valo AC_BK, 1252e705c121SKalle Valo AC_BE, 1253e705c121SKalle Valo AC_VI, 1254e705c121SKalle Valo AC_VI, 1255e705c121SKalle Valo AC_VO, 1256e705c121SKalle Valo AC_VO, 1257e705c121SKalle Valo }; 1258e705c121SKalle Valo 1259e705c121SKalle Valo int iwl_mvm_sta_tx_agg_start(struct iwl_mvm *mvm, struct ieee80211_vif *vif, 1260e705c121SKalle Valo struct ieee80211_sta *sta, u16 tid, u16 *ssn) 1261e705c121SKalle Valo { 1262e705c121SKalle Valo struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta); 1263e705c121SKalle Valo struct iwl_mvm_tid_data *tid_data; 1264e705c121SKalle Valo int txq_id; 1265e705c121SKalle Valo int ret; 1266e705c121SKalle Valo 1267e705c121SKalle Valo if (WARN_ON_ONCE(tid >= IWL_MAX_TID_COUNT)) 1268e705c121SKalle Valo return -EINVAL; 1269e705c121SKalle Valo 1270e705c121SKalle Valo if (mvmsta->tid_data[tid].state != IWL_AGG_OFF) { 1271e705c121SKalle Valo IWL_ERR(mvm, "Start AGG when state is not IWL_AGG_OFF %d!\n", 1272e705c121SKalle Valo mvmsta->tid_data[tid].state); 1273e705c121SKalle Valo return -ENXIO; 1274e705c121SKalle Valo } 1275e705c121SKalle Valo 1276e705c121SKalle Valo lockdep_assert_held(&mvm->mutex); 1277e705c121SKalle Valo 1278e705c121SKalle Valo spin_lock_bh(&mvmsta->lock); 1279e705c121SKalle Valo 1280e705c121SKalle Valo /* possible race condition - we entered D0i3 while starting agg */ 1281e705c121SKalle Valo if (test_bit(IWL_MVM_STATUS_IN_D0I3, &mvm->status)) { 1282e705c121SKalle Valo spin_unlock_bh(&mvmsta->lock); 1283e705c121SKalle Valo IWL_ERR(mvm, "Entered D0i3 while starting Tx agg\n"); 1284e705c121SKalle Valo return -EIO; 1285e705c121SKalle Valo } 1286e705c121SKalle Valo 1287e705c121SKalle Valo spin_lock_bh(&mvm->queue_info_lock); 1288e705c121SKalle Valo 1289e705c121SKalle Valo txq_id = iwl_mvm_find_free_queue(mvm, mvm->first_agg_queue, 1290e705c121SKalle Valo mvm->last_agg_queue); 1291e705c121SKalle Valo if (txq_id < 0) { 1292e705c121SKalle Valo ret = txq_id; 1293e705c121SKalle Valo spin_unlock_bh(&mvm->queue_info_lock); 1294e705c121SKalle Valo IWL_ERR(mvm, "Failed to allocate agg queue\n"); 1295e705c121SKalle Valo goto release_locks; 1296e705c121SKalle Valo } 1297e705c121SKalle Valo mvm->queue_info[txq_id].setup_reserved = true; 1298e705c121SKalle Valo spin_unlock_bh(&mvm->queue_info_lock); 1299e705c121SKalle Valo 1300e705c121SKalle Valo tid_data = &mvmsta->tid_data[tid]; 1301e705c121SKalle Valo tid_data->ssn = IEEE80211_SEQ_TO_SN(tid_data->seq_number); 1302e705c121SKalle Valo tid_data->txq_id = txq_id; 1303e705c121SKalle Valo *ssn = tid_data->ssn; 1304e705c121SKalle Valo 1305e705c121SKalle Valo IWL_DEBUG_TX_QUEUES(mvm, 1306e705c121SKalle Valo "Start AGG: sta %d tid %d queue %d - ssn = %d, next_recl = %d\n", 1307e705c121SKalle Valo mvmsta->sta_id, tid, txq_id, tid_data->ssn, 1308e705c121SKalle Valo tid_data->next_reclaimed); 1309e705c121SKalle Valo 1310e705c121SKalle Valo if (tid_data->ssn == tid_data->next_reclaimed) { 1311e705c121SKalle Valo tid_data->state = IWL_AGG_STARTING; 1312e705c121SKalle Valo ieee80211_start_tx_ba_cb_irqsafe(vif, sta->addr, tid); 1313e705c121SKalle Valo } else { 1314e705c121SKalle Valo tid_data->state = IWL_EMPTYING_HW_QUEUE_ADDBA; 1315e705c121SKalle Valo } 1316e705c121SKalle Valo 1317e705c121SKalle Valo ret = 0; 1318e705c121SKalle Valo 1319e705c121SKalle Valo release_locks: 1320e705c121SKalle Valo spin_unlock_bh(&mvmsta->lock); 1321e705c121SKalle Valo 1322e705c121SKalle Valo return ret; 1323e705c121SKalle Valo } 1324e705c121SKalle Valo 1325e705c121SKalle Valo int iwl_mvm_sta_tx_agg_oper(struct iwl_mvm *mvm, struct ieee80211_vif *vif, 1326bb81bb68SEmmanuel Grumbach struct ieee80211_sta *sta, u16 tid, u8 buf_size, 1327bb81bb68SEmmanuel Grumbach bool amsdu) 1328e705c121SKalle Valo { 1329e705c121SKalle Valo struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta); 1330e705c121SKalle Valo struct iwl_mvm_tid_data *tid_data = &mvmsta->tid_data[tid]; 1331e705c121SKalle Valo unsigned int wdg_timeout = 1332e705c121SKalle Valo iwl_mvm_get_wd_timeout(mvm, vif, sta->tdls, false); 1333eea76c36SEmmanuel Grumbach int queue, ret; 1334e705c121SKalle Valo u16 ssn; 1335e705c121SKalle Valo 1336eea76c36SEmmanuel Grumbach struct iwl_trans_txq_scd_cfg cfg = { 1337eea76c36SEmmanuel Grumbach .sta_id = mvmsta->sta_id, 1338eea76c36SEmmanuel Grumbach .tid = tid, 1339eea76c36SEmmanuel Grumbach .frame_limit = buf_size, 1340eea76c36SEmmanuel Grumbach .aggregate = true, 1341eea76c36SEmmanuel Grumbach }; 1342eea76c36SEmmanuel Grumbach 1343e705c121SKalle Valo BUILD_BUG_ON((sizeof(mvmsta->agg_tids) * BITS_PER_BYTE) 1344e705c121SKalle Valo != IWL_MAX_TID_COUNT); 1345e705c121SKalle Valo 1346e705c121SKalle Valo buf_size = min_t(int, buf_size, LINK_QUAL_AGG_FRAME_LIMIT_DEF); 1347e705c121SKalle Valo 1348e705c121SKalle Valo spin_lock_bh(&mvmsta->lock); 1349e705c121SKalle Valo ssn = tid_data->ssn; 1350e705c121SKalle Valo queue = tid_data->txq_id; 1351e705c121SKalle Valo tid_data->state = IWL_AGG_ON; 1352e705c121SKalle Valo mvmsta->agg_tids |= BIT(tid); 1353e705c121SKalle Valo tid_data->ssn = 0xffff; 1354bb81bb68SEmmanuel Grumbach tid_data->amsdu_in_ampdu_allowed = amsdu; 1355e705c121SKalle Valo spin_unlock_bh(&mvmsta->lock); 1356e705c121SKalle Valo 1357eea76c36SEmmanuel Grumbach cfg.fifo = iwl_mvm_ac_to_tx_fifo[tid_to_mac80211_ac[tid]]; 1358e705c121SKalle Valo 1359eea76c36SEmmanuel Grumbach iwl_mvm_enable_txq(mvm, queue, vif->hw_queue[tid_to_mac80211_ac[tid]], 1360eea76c36SEmmanuel Grumbach ssn, &cfg, wdg_timeout); 1361e705c121SKalle Valo 1362e705c121SKalle Valo ret = iwl_mvm_sta_tx_agg(mvm, sta, tid, queue, true); 1363e705c121SKalle Valo if (ret) 1364e705c121SKalle Valo return -EIO; 1365e705c121SKalle Valo 1366e705c121SKalle Valo /* No need to mark as reserved */ 1367e705c121SKalle Valo spin_lock_bh(&mvm->queue_info_lock); 1368e705c121SKalle Valo mvm->queue_info[queue].setup_reserved = false; 1369e705c121SKalle Valo spin_unlock_bh(&mvm->queue_info_lock); 1370e705c121SKalle Valo 1371e705c121SKalle Valo /* 1372e705c121SKalle Valo * Even though in theory the peer could have different 1373e705c121SKalle Valo * aggregation reorder buffer sizes for different sessions, 1374e705c121SKalle Valo * our ucode doesn't allow for that and has a global limit 1375e705c121SKalle Valo * for each station. Therefore, use the minimum of all the 1376e705c121SKalle Valo * aggregation sessions and our default value. 1377e705c121SKalle Valo */ 1378e705c121SKalle Valo mvmsta->max_agg_bufsize = 1379e705c121SKalle Valo min(mvmsta->max_agg_bufsize, buf_size); 1380e705c121SKalle Valo mvmsta->lq_sta.lq.agg_frame_cnt_limit = mvmsta->max_agg_bufsize; 1381e705c121SKalle Valo 1382e705c121SKalle Valo IWL_DEBUG_HT(mvm, "Tx aggregation enabled on ra = %pM tid = %d\n", 1383e705c121SKalle Valo sta->addr, tid); 1384e705c121SKalle Valo 1385e705c121SKalle Valo return iwl_mvm_send_lq_cmd(mvm, &mvmsta->lq_sta.lq, false); 1386e705c121SKalle Valo } 1387e705c121SKalle Valo 1388e705c121SKalle Valo int iwl_mvm_sta_tx_agg_stop(struct iwl_mvm *mvm, struct ieee80211_vif *vif, 1389e705c121SKalle Valo struct ieee80211_sta *sta, u16 tid) 1390e705c121SKalle Valo { 1391e705c121SKalle Valo struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta); 1392e705c121SKalle Valo struct iwl_mvm_tid_data *tid_data = &mvmsta->tid_data[tid]; 1393e705c121SKalle Valo u16 txq_id; 1394e705c121SKalle Valo int err; 1395e705c121SKalle Valo 1396e705c121SKalle Valo 1397e705c121SKalle Valo /* 1398e705c121SKalle Valo * If mac80211 is cleaning its state, then say that we finished since 1399e705c121SKalle Valo * our state has been cleared anyway. 1400e705c121SKalle Valo */ 1401e705c121SKalle Valo if (test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status)) { 1402e705c121SKalle Valo ieee80211_stop_tx_ba_cb_irqsafe(vif, sta->addr, tid); 1403e705c121SKalle Valo return 0; 1404e705c121SKalle Valo } 1405e705c121SKalle Valo 1406e705c121SKalle Valo spin_lock_bh(&mvmsta->lock); 1407e705c121SKalle Valo 1408e705c121SKalle Valo txq_id = tid_data->txq_id; 1409e705c121SKalle Valo 1410e705c121SKalle Valo IWL_DEBUG_TX_QUEUES(mvm, "Stop AGG: sta %d tid %d q %d state %d\n", 1411e705c121SKalle Valo mvmsta->sta_id, tid, txq_id, tid_data->state); 1412e705c121SKalle Valo 1413e705c121SKalle Valo mvmsta->agg_tids &= ~BIT(tid); 1414e705c121SKalle Valo 1415e705c121SKalle Valo /* No need to mark as reserved anymore */ 1416e705c121SKalle Valo spin_lock_bh(&mvm->queue_info_lock); 1417e705c121SKalle Valo mvm->queue_info[txq_id].setup_reserved = false; 1418e705c121SKalle Valo spin_unlock_bh(&mvm->queue_info_lock); 1419e705c121SKalle Valo 1420e705c121SKalle Valo switch (tid_data->state) { 1421e705c121SKalle Valo case IWL_AGG_ON: 1422e705c121SKalle Valo tid_data->ssn = IEEE80211_SEQ_TO_SN(tid_data->seq_number); 1423e705c121SKalle Valo 1424e705c121SKalle Valo IWL_DEBUG_TX_QUEUES(mvm, 1425e705c121SKalle Valo "ssn = %d, next_recl = %d\n", 1426e705c121SKalle Valo tid_data->ssn, tid_data->next_reclaimed); 1427e705c121SKalle Valo 1428e705c121SKalle Valo /* There are still packets for this RA / TID in the HW */ 1429e705c121SKalle Valo if (tid_data->ssn != tid_data->next_reclaimed) { 1430e705c121SKalle Valo tid_data->state = IWL_EMPTYING_HW_QUEUE_DELBA; 1431e705c121SKalle Valo err = 0; 1432e705c121SKalle Valo break; 1433e705c121SKalle Valo } 1434e705c121SKalle Valo 1435e705c121SKalle Valo tid_data->ssn = 0xffff; 1436e705c121SKalle Valo tid_data->state = IWL_AGG_OFF; 1437e705c121SKalle Valo spin_unlock_bh(&mvmsta->lock); 1438e705c121SKalle Valo 1439e705c121SKalle Valo ieee80211_stop_tx_ba_cb_irqsafe(vif, sta->addr, tid); 1440e705c121SKalle Valo 1441e705c121SKalle Valo iwl_mvm_sta_tx_agg(mvm, sta, tid, txq_id, false); 1442e705c121SKalle Valo 1443e705c121SKalle Valo iwl_mvm_disable_txq(mvm, txq_id, 1444e705c121SKalle Valo vif->hw_queue[tid_to_mac80211_ac[tid]], tid, 1445e705c121SKalle Valo 0); 1446e705c121SKalle Valo return 0; 1447e705c121SKalle Valo case IWL_AGG_STARTING: 1448e705c121SKalle Valo case IWL_EMPTYING_HW_QUEUE_ADDBA: 1449e705c121SKalle Valo /* 1450e705c121SKalle Valo * The agg session has been stopped before it was set up. This 1451e705c121SKalle Valo * can happen when the AddBA timer times out for example. 1452e705c121SKalle Valo */ 1453e705c121SKalle Valo 1454e705c121SKalle Valo /* No barriers since we are under mutex */ 1455e705c121SKalle Valo lockdep_assert_held(&mvm->mutex); 1456e705c121SKalle Valo 1457e705c121SKalle Valo ieee80211_stop_tx_ba_cb_irqsafe(vif, sta->addr, tid); 1458e705c121SKalle Valo tid_data->state = IWL_AGG_OFF; 1459e705c121SKalle Valo err = 0; 1460e705c121SKalle Valo break; 1461e705c121SKalle Valo default: 1462e705c121SKalle Valo IWL_ERR(mvm, 1463e705c121SKalle Valo "Stopping AGG while state not ON or starting for %d on %d (%d)\n", 1464e705c121SKalle Valo mvmsta->sta_id, tid, tid_data->state); 1465e705c121SKalle Valo IWL_ERR(mvm, 1466e705c121SKalle Valo "\ttid_data->txq_id = %d\n", tid_data->txq_id); 1467e705c121SKalle Valo err = -EINVAL; 1468e705c121SKalle Valo } 1469e705c121SKalle Valo 1470e705c121SKalle Valo spin_unlock_bh(&mvmsta->lock); 1471e705c121SKalle Valo 1472e705c121SKalle Valo return err; 1473e705c121SKalle Valo } 1474e705c121SKalle Valo 1475e705c121SKalle Valo int iwl_mvm_sta_tx_agg_flush(struct iwl_mvm *mvm, struct ieee80211_vif *vif, 1476e705c121SKalle Valo struct ieee80211_sta *sta, u16 tid) 1477e705c121SKalle Valo { 1478e705c121SKalle Valo struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta); 1479e705c121SKalle Valo struct iwl_mvm_tid_data *tid_data = &mvmsta->tid_data[tid]; 1480e705c121SKalle Valo u16 txq_id; 1481e705c121SKalle Valo enum iwl_mvm_agg_state old_state; 1482e705c121SKalle Valo 1483e705c121SKalle Valo /* 1484e705c121SKalle Valo * First set the agg state to OFF to avoid calling 1485e705c121SKalle Valo * ieee80211_stop_tx_ba_cb in iwl_mvm_check_ratid_empty. 1486e705c121SKalle Valo */ 1487e705c121SKalle Valo spin_lock_bh(&mvmsta->lock); 1488e705c121SKalle Valo txq_id = tid_data->txq_id; 1489e705c121SKalle Valo IWL_DEBUG_TX_QUEUES(mvm, "Flush AGG: sta %d tid %d q %d state %d\n", 1490e705c121SKalle Valo mvmsta->sta_id, tid, txq_id, tid_data->state); 1491e705c121SKalle Valo old_state = tid_data->state; 1492e705c121SKalle Valo tid_data->state = IWL_AGG_OFF; 1493e705c121SKalle Valo mvmsta->agg_tids &= ~BIT(tid); 1494e705c121SKalle Valo spin_unlock_bh(&mvmsta->lock); 1495e705c121SKalle Valo 1496e705c121SKalle Valo /* No need to mark as reserved */ 1497e705c121SKalle Valo spin_lock_bh(&mvm->queue_info_lock); 1498e705c121SKalle Valo mvm->queue_info[txq_id].setup_reserved = false; 1499e705c121SKalle Valo spin_unlock_bh(&mvm->queue_info_lock); 1500e705c121SKalle Valo 1501e705c121SKalle Valo if (old_state >= IWL_AGG_ON) { 1502e705c121SKalle Valo iwl_mvm_drain_sta(mvm, mvmsta, true); 1503e705c121SKalle Valo if (iwl_mvm_flush_tx_path(mvm, BIT(txq_id), 0)) 1504e705c121SKalle Valo IWL_ERR(mvm, "Couldn't flush the AGG queue\n"); 1505e705c121SKalle Valo iwl_trans_wait_tx_queue_empty(mvm->trans, 1506e705c121SKalle Valo mvmsta->tfd_queue_msk); 1507e705c121SKalle Valo iwl_mvm_drain_sta(mvm, mvmsta, false); 1508e705c121SKalle Valo 1509e705c121SKalle Valo iwl_mvm_sta_tx_agg(mvm, sta, tid, txq_id, false); 1510e705c121SKalle Valo 1511e705c121SKalle Valo iwl_mvm_disable_txq(mvm, tid_data->txq_id, 1512e705c121SKalle Valo vif->hw_queue[tid_to_mac80211_ac[tid]], tid, 1513e705c121SKalle Valo 0); 1514e705c121SKalle Valo } 1515e705c121SKalle Valo 1516e705c121SKalle Valo return 0; 1517e705c121SKalle Valo } 1518e705c121SKalle Valo 1519e705c121SKalle Valo static int iwl_mvm_set_fw_key_idx(struct iwl_mvm *mvm) 1520e705c121SKalle Valo { 1521e705c121SKalle Valo int i, max = -1, max_offs = -1; 1522e705c121SKalle Valo 1523e705c121SKalle Valo lockdep_assert_held(&mvm->mutex); 1524e705c121SKalle Valo 1525e705c121SKalle Valo /* Pick the unused key offset with the highest 'deleted' 1526e705c121SKalle Valo * counter. Every time a key is deleted, all the counters 1527e705c121SKalle Valo * are incremented and the one that was just deleted is 1528e705c121SKalle Valo * reset to zero. Thus, the highest counter is the one 1529e705c121SKalle Valo * that was deleted longest ago. Pick that one. 1530e705c121SKalle Valo */ 1531e705c121SKalle Valo for (i = 0; i < STA_KEY_MAX_NUM; i++) { 1532e705c121SKalle Valo if (test_bit(i, mvm->fw_key_table)) 1533e705c121SKalle Valo continue; 1534e705c121SKalle Valo if (mvm->fw_key_deleted[i] > max) { 1535e705c121SKalle Valo max = mvm->fw_key_deleted[i]; 1536e705c121SKalle Valo max_offs = i; 1537e705c121SKalle Valo } 1538e705c121SKalle Valo } 1539e705c121SKalle Valo 1540e705c121SKalle Valo if (max_offs < 0) 1541e705c121SKalle Valo return STA_KEY_IDX_INVALID; 1542e705c121SKalle Valo 1543e705c121SKalle Valo return max_offs; 1544e705c121SKalle Valo } 1545e705c121SKalle Valo 15465f7a1847SJohannes Berg static struct iwl_mvm_sta *iwl_mvm_get_key_sta(struct iwl_mvm *mvm, 15474615fd15SEmmanuel Grumbach struct ieee80211_vif *vif, 1548e705c121SKalle Valo struct ieee80211_sta *sta) 1549e705c121SKalle Valo { 1550e705c121SKalle Valo struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 1551e705c121SKalle Valo 15525f7a1847SJohannes Berg if (sta) 15535f7a1847SJohannes Berg return iwl_mvm_sta_from_mac80211(sta); 1554e705c121SKalle Valo 1555e705c121SKalle Valo /* 1556e705c121SKalle Valo * The device expects GTKs for station interfaces to be 1557e705c121SKalle Valo * installed as GTKs for the AP station. If we have no 1558e705c121SKalle Valo * station ID, then use AP's station ID. 1559e705c121SKalle Valo */ 1560e705c121SKalle Valo if (vif->type == NL80211_IFTYPE_STATION && 15614615fd15SEmmanuel Grumbach mvmvif->ap_sta_id != IWL_MVM_STATION_COUNT) { 15624615fd15SEmmanuel Grumbach u8 sta_id = mvmvif->ap_sta_id; 15634615fd15SEmmanuel Grumbach 156412f17211SEmmanuel Grumbach sta = rcu_dereference_check(mvm->fw_id_to_mac_id[sta_id], 15654615fd15SEmmanuel Grumbach lockdep_is_held(&mvm->mutex)); 15664615fd15SEmmanuel Grumbach /* 15674615fd15SEmmanuel Grumbach * It is possible that the 'sta' parameter is NULL, 15684615fd15SEmmanuel Grumbach * for example when a GTK is removed - the sta_id will then 15694615fd15SEmmanuel Grumbach * be the AP ID, and no station was passed by mac80211. 15704615fd15SEmmanuel Grumbach */ 15714615fd15SEmmanuel Grumbach if (IS_ERR_OR_NULL(sta)) 15725f7a1847SJohannes Berg return NULL; 15734615fd15SEmmanuel Grumbach 15745f7a1847SJohannes Berg return iwl_mvm_sta_from_mac80211(sta); 15754615fd15SEmmanuel Grumbach } 1576e705c121SKalle Valo 15775f7a1847SJohannes Berg return NULL; 1578e705c121SKalle Valo } 1579e705c121SKalle Valo 1580e705c121SKalle Valo static int iwl_mvm_send_sta_key(struct iwl_mvm *mvm, 1581e705c121SKalle Valo struct iwl_mvm_sta *mvm_sta, 1582e705c121SKalle Valo struct ieee80211_key_conf *keyconf, bool mcast, 15834615fd15SEmmanuel Grumbach u32 tkip_iv32, u16 *tkip_p1k, u32 cmd_flags, 15844615fd15SEmmanuel Grumbach u8 key_offset) 1585e705c121SKalle Valo { 1586e705c121SKalle Valo struct iwl_mvm_add_sta_key_cmd cmd = {}; 1587e705c121SKalle Valo __le16 key_flags; 1588e705c121SKalle Valo int ret; 1589e705c121SKalle Valo u32 status; 1590e705c121SKalle Valo u16 keyidx; 1591e705c121SKalle Valo int i; 1592e705c121SKalle Valo u8 sta_id = mvm_sta->sta_id; 1593e705c121SKalle Valo 1594e705c121SKalle Valo keyidx = (keyconf->keyidx << STA_KEY_FLG_KEYID_POS) & 1595e705c121SKalle Valo STA_KEY_FLG_KEYID_MSK; 1596e705c121SKalle Valo key_flags = cpu_to_le16(keyidx); 1597e705c121SKalle Valo key_flags |= cpu_to_le16(STA_KEY_FLG_WEP_KEY_MAP); 1598e705c121SKalle Valo 1599e705c121SKalle Valo switch (keyconf->cipher) { 1600e705c121SKalle Valo case WLAN_CIPHER_SUITE_TKIP: 1601e705c121SKalle Valo key_flags |= cpu_to_le16(STA_KEY_FLG_TKIP); 1602e705c121SKalle Valo cmd.tkip_rx_tsc_byte2 = tkip_iv32; 1603e705c121SKalle Valo for (i = 0; i < 5; i++) 1604e705c121SKalle Valo cmd.tkip_rx_ttak[i] = cpu_to_le16(tkip_p1k[i]); 1605e705c121SKalle Valo memcpy(cmd.key, keyconf->key, keyconf->keylen); 1606e705c121SKalle Valo break; 1607e705c121SKalle Valo case WLAN_CIPHER_SUITE_CCMP: 1608e705c121SKalle Valo key_flags |= cpu_to_le16(STA_KEY_FLG_CCM); 1609e705c121SKalle Valo memcpy(cmd.key, keyconf->key, keyconf->keylen); 1610e705c121SKalle Valo break; 1611e705c121SKalle Valo case WLAN_CIPHER_SUITE_WEP104: 1612e705c121SKalle Valo key_flags |= cpu_to_le16(STA_KEY_FLG_WEP_13BYTES); 1613e705c121SKalle Valo /* fall through */ 1614e705c121SKalle Valo case WLAN_CIPHER_SUITE_WEP40: 1615e705c121SKalle Valo key_flags |= cpu_to_le16(STA_KEY_FLG_WEP); 1616e705c121SKalle Valo memcpy(cmd.key + 3, keyconf->key, keyconf->keylen); 1617e705c121SKalle Valo break; 1618e705c121SKalle Valo default: 1619e705c121SKalle Valo key_flags |= cpu_to_le16(STA_KEY_FLG_EXT); 1620e705c121SKalle Valo memcpy(cmd.key, keyconf->key, keyconf->keylen); 1621e705c121SKalle Valo } 1622e705c121SKalle Valo 1623e705c121SKalle Valo if (mcast) 1624e705c121SKalle Valo key_flags |= cpu_to_le16(STA_KEY_MULTICAST); 1625e705c121SKalle Valo 16264615fd15SEmmanuel Grumbach cmd.key_offset = key_offset; 1627e705c121SKalle Valo cmd.key_flags = key_flags; 1628e705c121SKalle Valo cmd.sta_id = sta_id; 1629e705c121SKalle Valo 1630e705c121SKalle Valo status = ADD_STA_SUCCESS; 1631e705c121SKalle Valo if (cmd_flags & CMD_ASYNC) 1632e705c121SKalle Valo ret = iwl_mvm_send_cmd_pdu(mvm, ADD_STA_KEY, CMD_ASYNC, 1633e705c121SKalle Valo sizeof(cmd), &cmd); 1634e705c121SKalle Valo else 1635e705c121SKalle Valo ret = iwl_mvm_send_cmd_pdu_status(mvm, ADD_STA_KEY, sizeof(cmd), 1636e705c121SKalle Valo &cmd, &status); 1637e705c121SKalle Valo 1638e705c121SKalle Valo switch (status) { 1639e705c121SKalle Valo case ADD_STA_SUCCESS: 1640e705c121SKalle Valo IWL_DEBUG_WEP(mvm, "MODIFY_STA: set dynamic key passed\n"); 1641e705c121SKalle Valo break; 1642e705c121SKalle Valo default: 1643e705c121SKalle Valo ret = -EIO; 1644e705c121SKalle Valo IWL_ERR(mvm, "MODIFY_STA: set dynamic key failed\n"); 1645e705c121SKalle Valo break; 1646e705c121SKalle Valo } 1647e705c121SKalle Valo 1648e705c121SKalle Valo return ret; 1649e705c121SKalle Valo } 1650e705c121SKalle Valo 1651e705c121SKalle Valo static int iwl_mvm_send_sta_igtk(struct iwl_mvm *mvm, 1652e705c121SKalle Valo struct ieee80211_key_conf *keyconf, 1653e705c121SKalle Valo u8 sta_id, bool remove_key) 1654e705c121SKalle Valo { 1655e705c121SKalle Valo struct iwl_mvm_mgmt_mcast_key_cmd igtk_cmd = {}; 1656e705c121SKalle Valo 1657e705c121SKalle Valo /* verify the key details match the required command's expectations */ 1658e705c121SKalle Valo if (WARN_ON((keyconf->cipher != WLAN_CIPHER_SUITE_AES_CMAC) || 1659e705c121SKalle Valo (keyconf->flags & IEEE80211_KEY_FLAG_PAIRWISE) || 1660e705c121SKalle Valo (keyconf->keyidx != 4 && keyconf->keyidx != 5))) 1661e705c121SKalle Valo return -EINVAL; 1662e705c121SKalle Valo 1663e705c121SKalle Valo igtk_cmd.key_id = cpu_to_le32(keyconf->keyidx); 1664e705c121SKalle Valo igtk_cmd.sta_id = cpu_to_le32(sta_id); 1665e705c121SKalle Valo 1666e705c121SKalle Valo if (remove_key) { 1667e705c121SKalle Valo igtk_cmd.ctrl_flags |= cpu_to_le32(STA_KEY_NOT_VALID); 1668e705c121SKalle Valo } else { 1669e705c121SKalle Valo struct ieee80211_key_seq seq; 1670e705c121SKalle Valo const u8 *pn; 1671e705c121SKalle Valo 1672e705c121SKalle Valo memcpy(igtk_cmd.IGTK, keyconf->key, keyconf->keylen); 1673e705c121SKalle Valo ieee80211_get_key_rx_seq(keyconf, 0, &seq); 1674e705c121SKalle Valo pn = seq.aes_cmac.pn; 1675e705c121SKalle Valo igtk_cmd.receive_seq_cnt = cpu_to_le64(((u64) pn[5] << 0) | 1676e705c121SKalle Valo ((u64) pn[4] << 8) | 1677e705c121SKalle Valo ((u64) pn[3] << 16) | 1678e705c121SKalle Valo ((u64) pn[2] << 24) | 1679e705c121SKalle Valo ((u64) pn[1] << 32) | 1680e705c121SKalle Valo ((u64) pn[0] << 40)); 1681e705c121SKalle Valo } 1682e705c121SKalle Valo 1683e705c121SKalle Valo IWL_DEBUG_INFO(mvm, "%s igtk for sta %u\n", 1684e705c121SKalle Valo remove_key ? "removing" : "installing", 1685e705c121SKalle Valo igtk_cmd.sta_id); 1686e705c121SKalle Valo 1687e705c121SKalle Valo return iwl_mvm_send_cmd_pdu(mvm, MGMT_MCAST_KEY, 0, 1688e705c121SKalle Valo sizeof(igtk_cmd), &igtk_cmd); 1689e705c121SKalle Valo } 1690e705c121SKalle Valo 1691e705c121SKalle Valo 1692e705c121SKalle Valo static inline u8 *iwl_mvm_get_mac_addr(struct iwl_mvm *mvm, 1693e705c121SKalle Valo struct ieee80211_vif *vif, 1694e705c121SKalle Valo struct ieee80211_sta *sta) 1695e705c121SKalle Valo { 1696e705c121SKalle Valo struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 1697e705c121SKalle Valo 1698e705c121SKalle Valo if (sta) 1699e705c121SKalle Valo return sta->addr; 1700e705c121SKalle Valo 1701e705c121SKalle Valo if (vif->type == NL80211_IFTYPE_STATION && 1702e705c121SKalle Valo mvmvif->ap_sta_id != IWL_MVM_STATION_COUNT) { 1703e705c121SKalle Valo u8 sta_id = mvmvif->ap_sta_id; 1704e705c121SKalle Valo sta = rcu_dereference_protected(mvm->fw_id_to_mac_id[sta_id], 1705e705c121SKalle Valo lockdep_is_held(&mvm->mutex)); 1706e705c121SKalle Valo return sta->addr; 1707e705c121SKalle Valo } 1708e705c121SKalle Valo 1709e705c121SKalle Valo 1710e705c121SKalle Valo return NULL; 1711e705c121SKalle Valo } 1712e705c121SKalle Valo 1713e705c121SKalle Valo static int __iwl_mvm_set_sta_key(struct iwl_mvm *mvm, 1714e705c121SKalle Valo struct ieee80211_vif *vif, 1715e705c121SKalle Valo struct ieee80211_sta *sta, 1716e705c121SKalle Valo struct ieee80211_key_conf *keyconf, 17174615fd15SEmmanuel Grumbach u8 key_offset, 1718e705c121SKalle Valo bool mcast) 1719e705c121SKalle Valo { 1720e705c121SKalle Valo struct iwl_mvm_sta *mvm_sta = iwl_mvm_sta_from_mac80211(sta); 1721e705c121SKalle Valo int ret; 1722e705c121SKalle Valo const u8 *addr; 1723e705c121SKalle Valo struct ieee80211_key_seq seq; 1724e705c121SKalle Valo u16 p1k[5]; 1725e705c121SKalle Valo 1726e705c121SKalle Valo switch (keyconf->cipher) { 1727e705c121SKalle Valo case WLAN_CIPHER_SUITE_TKIP: 1728e705c121SKalle Valo addr = iwl_mvm_get_mac_addr(mvm, vif, sta); 1729e705c121SKalle Valo /* get phase 1 key from mac80211 */ 1730e705c121SKalle Valo ieee80211_get_key_rx_seq(keyconf, 0, &seq); 1731e705c121SKalle Valo ieee80211_get_tkip_rx_p1k(keyconf, addr, seq.tkip.iv32, p1k); 1732e705c121SKalle Valo ret = iwl_mvm_send_sta_key(mvm, mvm_sta, keyconf, mcast, 17334615fd15SEmmanuel Grumbach seq.tkip.iv32, p1k, 0, key_offset); 1734e705c121SKalle Valo break; 1735e705c121SKalle Valo case WLAN_CIPHER_SUITE_CCMP: 1736e705c121SKalle Valo case WLAN_CIPHER_SUITE_WEP40: 1737e705c121SKalle Valo case WLAN_CIPHER_SUITE_WEP104: 1738e705c121SKalle Valo ret = iwl_mvm_send_sta_key(mvm, mvm_sta, keyconf, mcast, 17394615fd15SEmmanuel Grumbach 0, NULL, 0, key_offset); 1740e705c121SKalle Valo break; 1741e705c121SKalle Valo default: 1742e705c121SKalle Valo ret = iwl_mvm_send_sta_key(mvm, mvm_sta, keyconf, mcast, 17434615fd15SEmmanuel Grumbach 0, NULL, 0, key_offset); 1744e705c121SKalle Valo } 1745e705c121SKalle Valo 1746e705c121SKalle Valo return ret; 1747e705c121SKalle Valo } 1748e705c121SKalle Valo 1749e705c121SKalle Valo static int __iwl_mvm_remove_sta_key(struct iwl_mvm *mvm, u8 sta_id, 1750e705c121SKalle Valo struct ieee80211_key_conf *keyconf, 1751e705c121SKalle Valo bool mcast) 1752e705c121SKalle Valo { 1753e705c121SKalle Valo struct iwl_mvm_add_sta_key_cmd cmd = {}; 1754e705c121SKalle Valo __le16 key_flags; 1755e705c121SKalle Valo int ret; 1756e705c121SKalle Valo u32 status; 1757e705c121SKalle Valo 1758e705c121SKalle Valo key_flags = cpu_to_le16((keyconf->keyidx << STA_KEY_FLG_KEYID_POS) & 1759e705c121SKalle Valo STA_KEY_FLG_KEYID_MSK); 1760e705c121SKalle Valo key_flags |= cpu_to_le16(STA_KEY_FLG_NO_ENC | STA_KEY_FLG_WEP_KEY_MAP); 1761e705c121SKalle Valo key_flags |= cpu_to_le16(STA_KEY_NOT_VALID); 1762e705c121SKalle Valo 1763e705c121SKalle Valo if (mcast) 1764e705c121SKalle Valo key_flags |= cpu_to_le16(STA_KEY_MULTICAST); 1765e705c121SKalle Valo 1766e705c121SKalle Valo cmd.key_flags = key_flags; 1767e705c121SKalle Valo cmd.key_offset = keyconf->hw_key_idx; 1768e705c121SKalle Valo cmd.sta_id = sta_id; 1769e705c121SKalle Valo 1770e705c121SKalle Valo status = ADD_STA_SUCCESS; 1771e705c121SKalle Valo ret = iwl_mvm_send_cmd_pdu_status(mvm, ADD_STA_KEY, sizeof(cmd), 1772e705c121SKalle Valo &cmd, &status); 1773e705c121SKalle Valo 1774e705c121SKalle Valo switch (status) { 1775e705c121SKalle Valo case ADD_STA_SUCCESS: 1776e705c121SKalle Valo IWL_DEBUG_WEP(mvm, "MODIFY_STA: remove sta key passed\n"); 1777e705c121SKalle Valo break; 1778e705c121SKalle Valo default: 1779e705c121SKalle Valo ret = -EIO; 1780e705c121SKalle Valo IWL_ERR(mvm, "MODIFY_STA: remove sta key failed\n"); 1781e705c121SKalle Valo break; 1782e705c121SKalle Valo } 1783e705c121SKalle Valo 1784e705c121SKalle Valo return ret; 1785e705c121SKalle Valo } 1786e705c121SKalle Valo 1787e705c121SKalle Valo int iwl_mvm_set_sta_key(struct iwl_mvm *mvm, 1788e705c121SKalle Valo struct ieee80211_vif *vif, 1789e705c121SKalle Valo struct ieee80211_sta *sta, 1790e705c121SKalle Valo struct ieee80211_key_conf *keyconf, 17914615fd15SEmmanuel Grumbach u8 key_offset) 1792e705c121SKalle Valo { 1793e705c121SKalle Valo bool mcast = !(keyconf->flags & IEEE80211_KEY_FLAG_PAIRWISE); 17945f7a1847SJohannes Berg struct iwl_mvm_sta *mvm_sta; 1795e705c121SKalle Valo u8 sta_id; 1796e705c121SKalle Valo int ret; 1797e705c121SKalle Valo static const u8 __maybe_unused zero_addr[ETH_ALEN] = {0}; 1798e705c121SKalle Valo 1799e705c121SKalle Valo lockdep_assert_held(&mvm->mutex); 1800e705c121SKalle Valo 1801e705c121SKalle Valo /* Get the station id from the mvm local station table */ 18025f7a1847SJohannes Berg mvm_sta = iwl_mvm_get_key_sta(mvm, vif, sta); 18035f7a1847SJohannes Berg if (!mvm_sta) { 18045f7a1847SJohannes Berg IWL_ERR(mvm, "Failed to find station\n"); 1805e705c121SKalle Valo return -EINVAL; 1806e705c121SKalle Valo } 18075f7a1847SJohannes Berg sta_id = mvm_sta->sta_id; 1808e705c121SKalle Valo 1809e705c121SKalle Valo if (keyconf->cipher == WLAN_CIPHER_SUITE_AES_CMAC) { 1810e705c121SKalle Valo ret = iwl_mvm_send_sta_igtk(mvm, keyconf, sta_id, false); 1811e705c121SKalle Valo goto end; 1812e705c121SKalle Valo } 1813e705c121SKalle Valo 1814e705c121SKalle Valo /* 1815e705c121SKalle Valo * It is possible that the 'sta' parameter is NULL, and thus 1816e705c121SKalle Valo * there is a need to retrieve the sta from the local station table. 1817e705c121SKalle Valo */ 1818e705c121SKalle Valo if (!sta) { 1819e705c121SKalle Valo sta = rcu_dereference_protected(mvm->fw_id_to_mac_id[sta_id], 1820e705c121SKalle Valo lockdep_is_held(&mvm->mutex)); 1821e705c121SKalle Valo if (IS_ERR_OR_NULL(sta)) { 1822e705c121SKalle Valo IWL_ERR(mvm, "Invalid station id\n"); 1823e705c121SKalle Valo return -EINVAL; 1824e705c121SKalle Valo } 1825e705c121SKalle Valo } 1826e705c121SKalle Valo 1827e705c121SKalle Valo if (WARN_ON_ONCE(iwl_mvm_sta_from_mac80211(sta)->vif != vif)) 1828e705c121SKalle Valo return -EINVAL; 1829e705c121SKalle Valo 18304615fd15SEmmanuel Grumbach /* If the key_offset is not pre-assigned, we need to find a 18314615fd15SEmmanuel Grumbach * new offset to use. In normal cases, the offset is not 18324615fd15SEmmanuel Grumbach * pre-assigned, but during HW_RESTART we want to reuse the 18334615fd15SEmmanuel Grumbach * same indices, so we pass them when this function is called. 18344615fd15SEmmanuel Grumbach * 18354615fd15SEmmanuel Grumbach * In D3 entry, we need to hardcoded the indices (because the 18364615fd15SEmmanuel Grumbach * firmware hardcodes the PTK offset to 0). In this case, we 18374615fd15SEmmanuel Grumbach * need to make sure we don't overwrite the hw_key_idx in the 18384615fd15SEmmanuel Grumbach * keyconf structure, because otherwise we cannot configure 18394615fd15SEmmanuel Grumbach * the original ones back when resuming. 1840e705c121SKalle Valo */ 18414615fd15SEmmanuel Grumbach if (key_offset == STA_KEY_IDX_INVALID) { 18424615fd15SEmmanuel Grumbach key_offset = iwl_mvm_set_fw_key_idx(mvm); 18434615fd15SEmmanuel Grumbach if (key_offset == STA_KEY_IDX_INVALID) 1844e705c121SKalle Valo return -ENOSPC; 18454615fd15SEmmanuel Grumbach keyconf->hw_key_idx = key_offset; 1846e705c121SKalle Valo } 1847e705c121SKalle Valo 18484615fd15SEmmanuel Grumbach ret = __iwl_mvm_set_sta_key(mvm, vif, sta, keyconf, key_offset, mcast); 18499c3deeb5SLuca Coelho if (ret) 1850e705c121SKalle Valo goto end; 1851e705c121SKalle Valo 1852e705c121SKalle Valo /* 1853e705c121SKalle Valo * For WEP, the same key is used for multicast and unicast. Upload it 1854e705c121SKalle Valo * again, using the same key offset, and now pointing the other one 1855e705c121SKalle Valo * to the same key slot (offset). 1856e705c121SKalle Valo * If this fails, remove the original as well. 1857e705c121SKalle Valo */ 1858e705c121SKalle Valo if (keyconf->cipher == WLAN_CIPHER_SUITE_WEP40 || 1859e705c121SKalle Valo keyconf->cipher == WLAN_CIPHER_SUITE_WEP104) { 18604615fd15SEmmanuel Grumbach ret = __iwl_mvm_set_sta_key(mvm, vif, sta, keyconf, 18614615fd15SEmmanuel Grumbach key_offset, !mcast); 1862e705c121SKalle Valo if (ret) { 1863e705c121SKalle Valo __iwl_mvm_remove_sta_key(mvm, sta_id, keyconf, mcast); 18649c3deeb5SLuca Coelho goto end; 1865e705c121SKalle Valo } 1866e705c121SKalle Valo } 1867e705c121SKalle Valo 18689c3deeb5SLuca Coelho __set_bit(key_offset, mvm->fw_key_table); 18699c3deeb5SLuca Coelho 1870e705c121SKalle Valo end: 1871e705c121SKalle Valo IWL_DEBUG_WEP(mvm, "key: cipher=%x len=%d idx=%d sta=%pM ret=%d\n", 1872e705c121SKalle Valo keyconf->cipher, keyconf->keylen, keyconf->keyidx, 1873e705c121SKalle Valo sta ? sta->addr : zero_addr, ret); 1874e705c121SKalle Valo return ret; 1875e705c121SKalle Valo } 1876e705c121SKalle Valo 1877e705c121SKalle Valo int iwl_mvm_remove_sta_key(struct iwl_mvm *mvm, 1878e705c121SKalle Valo struct ieee80211_vif *vif, 1879e705c121SKalle Valo struct ieee80211_sta *sta, 1880e705c121SKalle Valo struct ieee80211_key_conf *keyconf) 1881e705c121SKalle Valo { 1882e705c121SKalle Valo bool mcast = !(keyconf->flags & IEEE80211_KEY_FLAG_PAIRWISE); 18835f7a1847SJohannes Berg struct iwl_mvm_sta *mvm_sta; 18845f7a1847SJohannes Berg u8 sta_id = IWL_MVM_STATION_COUNT; 1885e705c121SKalle Valo int ret, i; 1886e705c121SKalle Valo 1887e705c121SKalle Valo lockdep_assert_held(&mvm->mutex); 1888e705c121SKalle Valo 18895f7a1847SJohannes Berg /* Get the station from the mvm local station table */ 18905f7a1847SJohannes Berg mvm_sta = iwl_mvm_get_key_sta(mvm, vif, sta); 1891e705c121SKalle Valo 1892e705c121SKalle Valo IWL_DEBUG_WEP(mvm, "mvm remove dynamic key: idx=%d sta=%d\n", 1893e705c121SKalle Valo keyconf->keyidx, sta_id); 1894e705c121SKalle Valo 1895e705c121SKalle Valo if (keyconf->cipher == WLAN_CIPHER_SUITE_AES_CMAC) 1896e705c121SKalle Valo return iwl_mvm_send_sta_igtk(mvm, keyconf, sta_id, true); 1897e705c121SKalle Valo 1898e705c121SKalle Valo if (!__test_and_clear_bit(keyconf->hw_key_idx, mvm->fw_key_table)) { 1899e705c121SKalle Valo IWL_ERR(mvm, "offset %d not used in fw key table.\n", 1900e705c121SKalle Valo keyconf->hw_key_idx); 1901e705c121SKalle Valo return -ENOENT; 1902e705c121SKalle Valo } 1903e705c121SKalle Valo 1904e705c121SKalle Valo /* track which key was deleted last */ 1905e705c121SKalle Valo for (i = 0; i < STA_KEY_MAX_NUM; i++) { 1906e705c121SKalle Valo if (mvm->fw_key_deleted[i] < U8_MAX) 1907e705c121SKalle Valo mvm->fw_key_deleted[i]++; 1908e705c121SKalle Valo } 1909e705c121SKalle Valo mvm->fw_key_deleted[keyconf->hw_key_idx] = 0; 1910e705c121SKalle Valo 19115f7a1847SJohannes Berg if (!mvm_sta) { 1912e705c121SKalle Valo IWL_DEBUG_WEP(mvm, "station non-existent, early return.\n"); 1913e705c121SKalle Valo return 0; 1914e705c121SKalle Valo } 1915e705c121SKalle Valo 19165f7a1847SJohannes Berg sta_id = mvm_sta->sta_id; 19175f7a1847SJohannes Berg 1918e705c121SKalle Valo ret = __iwl_mvm_remove_sta_key(mvm, sta_id, keyconf, mcast); 1919e705c121SKalle Valo if (ret) 1920e705c121SKalle Valo return ret; 1921e705c121SKalle Valo 1922e705c121SKalle Valo /* delete WEP key twice to get rid of (now useless) offset */ 1923e705c121SKalle Valo if (keyconf->cipher == WLAN_CIPHER_SUITE_WEP40 || 1924e705c121SKalle Valo keyconf->cipher == WLAN_CIPHER_SUITE_WEP104) 1925e705c121SKalle Valo ret = __iwl_mvm_remove_sta_key(mvm, sta_id, keyconf, !mcast); 1926e705c121SKalle Valo 1927e705c121SKalle Valo return ret; 1928e705c121SKalle Valo } 1929e705c121SKalle Valo 1930e705c121SKalle Valo void iwl_mvm_update_tkip_key(struct iwl_mvm *mvm, 1931e705c121SKalle Valo struct ieee80211_vif *vif, 1932e705c121SKalle Valo struct ieee80211_key_conf *keyconf, 1933e705c121SKalle Valo struct ieee80211_sta *sta, u32 iv32, 1934e705c121SKalle Valo u16 *phase1key) 1935e705c121SKalle Valo { 1936e705c121SKalle Valo struct iwl_mvm_sta *mvm_sta; 1937e705c121SKalle Valo bool mcast = !(keyconf->flags & IEEE80211_KEY_FLAG_PAIRWISE); 1938e705c121SKalle Valo 1939e705c121SKalle Valo rcu_read_lock(); 1940e705c121SKalle Valo 19415f7a1847SJohannes Berg mvm_sta = iwl_mvm_get_key_sta(mvm, vif, sta); 19425f7a1847SJohannes Berg if (WARN_ON_ONCE(!mvm_sta)) 194312f17211SEmmanuel Grumbach goto unlock; 1944e705c121SKalle Valo iwl_mvm_send_sta_key(mvm, mvm_sta, keyconf, mcast, 19454615fd15SEmmanuel Grumbach iv32, phase1key, CMD_ASYNC, keyconf->hw_key_idx); 194612f17211SEmmanuel Grumbach 194712f17211SEmmanuel Grumbach unlock: 1948e705c121SKalle Valo rcu_read_unlock(); 1949e705c121SKalle Valo } 1950e705c121SKalle Valo 1951e705c121SKalle Valo void iwl_mvm_sta_modify_ps_wake(struct iwl_mvm *mvm, 1952e705c121SKalle Valo struct ieee80211_sta *sta) 1953e705c121SKalle Valo { 1954e705c121SKalle Valo struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta); 1955e705c121SKalle Valo struct iwl_mvm_add_sta_cmd cmd = { 1956e705c121SKalle Valo .add_modify = STA_MODE_MODIFY, 1957e705c121SKalle Valo .sta_id = mvmsta->sta_id, 1958e705c121SKalle Valo .station_flags_msk = cpu_to_le32(STA_FLG_PS), 1959e705c121SKalle Valo .mac_id_n_color = cpu_to_le32(mvmsta->mac_id_n_color), 1960e705c121SKalle Valo }; 1961e705c121SKalle Valo int ret; 1962e705c121SKalle Valo 1963854c5705SSara Sharon ret = iwl_mvm_send_cmd_pdu(mvm, ADD_STA, CMD_ASYNC, 1964854c5705SSara Sharon iwl_mvm_add_sta_cmd_size(mvm), &cmd); 1965e705c121SKalle Valo if (ret) 1966e705c121SKalle Valo IWL_ERR(mvm, "Failed to send ADD_STA command (%d)\n", ret); 1967e705c121SKalle Valo } 1968e705c121SKalle Valo 1969e705c121SKalle Valo void iwl_mvm_sta_modify_sleep_tx_count(struct iwl_mvm *mvm, 1970e705c121SKalle Valo struct ieee80211_sta *sta, 1971e705c121SKalle Valo enum ieee80211_frame_release_type reason, 1972e705c121SKalle Valo u16 cnt, u16 tids, bool more_data, 1973e705c121SKalle Valo bool agg) 1974e705c121SKalle Valo { 1975e705c121SKalle Valo struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta); 1976e705c121SKalle Valo struct iwl_mvm_add_sta_cmd cmd = { 1977e705c121SKalle Valo .add_modify = STA_MODE_MODIFY, 1978e705c121SKalle Valo .sta_id = mvmsta->sta_id, 1979e705c121SKalle Valo .modify_mask = STA_MODIFY_SLEEPING_STA_TX_COUNT, 1980e705c121SKalle Valo .sleep_tx_count = cpu_to_le16(cnt), 1981e705c121SKalle Valo .mac_id_n_color = cpu_to_le32(mvmsta->mac_id_n_color), 1982e705c121SKalle Valo }; 1983e705c121SKalle Valo int tid, ret; 1984e705c121SKalle Valo unsigned long _tids = tids; 1985e705c121SKalle Valo 1986e705c121SKalle Valo /* convert TIDs to ACs - we don't support TSPEC so that's OK 1987e705c121SKalle Valo * Note that this field is reserved and unused by firmware not 1988e705c121SKalle Valo * supporting GO uAPSD, so it's safe to always do this. 1989e705c121SKalle Valo */ 1990e705c121SKalle Valo for_each_set_bit(tid, &_tids, IWL_MAX_TID_COUNT) 1991e705c121SKalle Valo cmd.awake_acs |= BIT(tid_to_ucode_ac[tid]); 1992e705c121SKalle Valo 1993e705c121SKalle Valo /* If we're releasing frames from aggregation queues then check if the 1994e705c121SKalle Valo * all queues combined that we're releasing frames from have 1995e705c121SKalle Valo * - more frames than the service period, in which case more_data 1996e705c121SKalle Valo * needs to be set 1997e705c121SKalle Valo * - fewer than 'cnt' frames, in which case we need to adjust the 1998e705c121SKalle Valo * firmware command (but do that unconditionally) 1999e705c121SKalle Valo */ 2000e705c121SKalle Valo if (agg) { 2001e705c121SKalle Valo int remaining = cnt; 200236be0eb6SEmmanuel Grumbach int sleep_tx_count; 2003e705c121SKalle Valo 2004e705c121SKalle Valo spin_lock_bh(&mvmsta->lock); 2005e705c121SKalle Valo for_each_set_bit(tid, &_tids, IWL_MAX_TID_COUNT) { 2006e705c121SKalle Valo struct iwl_mvm_tid_data *tid_data; 2007e705c121SKalle Valo u16 n_queued; 2008e705c121SKalle Valo 2009e705c121SKalle Valo tid_data = &mvmsta->tid_data[tid]; 2010e705c121SKalle Valo if (WARN(tid_data->state != IWL_AGG_ON && 2011e705c121SKalle Valo tid_data->state != IWL_EMPTYING_HW_QUEUE_DELBA, 2012e705c121SKalle Valo "TID %d state is %d\n", 2013e705c121SKalle Valo tid, tid_data->state)) { 2014e705c121SKalle Valo spin_unlock_bh(&mvmsta->lock); 2015e705c121SKalle Valo ieee80211_sta_eosp(sta); 2016e705c121SKalle Valo return; 2017e705c121SKalle Valo } 2018e705c121SKalle Valo 2019e705c121SKalle Valo n_queued = iwl_mvm_tid_queued(tid_data); 2020e705c121SKalle Valo if (n_queued > remaining) { 2021e705c121SKalle Valo more_data = true; 2022e705c121SKalle Valo remaining = 0; 2023e705c121SKalle Valo break; 2024e705c121SKalle Valo } 2025e705c121SKalle Valo remaining -= n_queued; 2026e705c121SKalle Valo } 202736be0eb6SEmmanuel Grumbach sleep_tx_count = cnt - remaining; 202836be0eb6SEmmanuel Grumbach if (reason == IEEE80211_FRAME_RELEASE_UAPSD) 202936be0eb6SEmmanuel Grumbach mvmsta->sleep_tx_count = sleep_tx_count; 2030e705c121SKalle Valo spin_unlock_bh(&mvmsta->lock); 2031e705c121SKalle Valo 203236be0eb6SEmmanuel Grumbach cmd.sleep_tx_count = cpu_to_le16(sleep_tx_count); 2033e705c121SKalle Valo if (WARN_ON(cnt - remaining == 0)) { 2034e705c121SKalle Valo ieee80211_sta_eosp(sta); 2035e705c121SKalle Valo return; 2036e705c121SKalle Valo } 2037e705c121SKalle Valo } 2038e705c121SKalle Valo 2039e705c121SKalle Valo /* Note: this is ignored by firmware not supporting GO uAPSD */ 2040e705c121SKalle Valo if (more_data) 2041e705c121SKalle Valo cmd.sleep_state_flags |= cpu_to_le16(STA_SLEEP_STATE_MOREDATA); 2042e705c121SKalle Valo 2043e705c121SKalle Valo if (reason == IEEE80211_FRAME_RELEASE_PSPOLL) { 2044e705c121SKalle Valo mvmsta->next_status_eosp = true; 2045e705c121SKalle Valo cmd.sleep_state_flags |= cpu_to_le16(STA_SLEEP_STATE_PS_POLL); 2046e705c121SKalle Valo } else { 2047e705c121SKalle Valo cmd.sleep_state_flags |= cpu_to_le16(STA_SLEEP_STATE_UAPSD); 2048e705c121SKalle Valo } 2049e705c121SKalle Valo 2050156f92f2SEmmanuel Grumbach /* block the Tx queues until the FW updated the sleep Tx count */ 2051156f92f2SEmmanuel Grumbach iwl_trans_block_txq_ptrs(mvm->trans, true); 2052156f92f2SEmmanuel Grumbach 2053156f92f2SEmmanuel Grumbach ret = iwl_mvm_send_cmd_pdu(mvm, ADD_STA, 2054156f92f2SEmmanuel Grumbach CMD_ASYNC | CMD_WANT_ASYNC_CALLBACK, 2055854c5705SSara Sharon iwl_mvm_add_sta_cmd_size(mvm), &cmd); 2056e705c121SKalle Valo if (ret) 2057e705c121SKalle Valo IWL_ERR(mvm, "Failed to send ADD_STA command (%d)\n", ret); 2058e705c121SKalle Valo } 2059e705c121SKalle Valo 2060e705c121SKalle Valo void iwl_mvm_rx_eosp_notif(struct iwl_mvm *mvm, 2061e705c121SKalle Valo struct iwl_rx_cmd_buffer *rxb) 2062e705c121SKalle Valo { 2063e705c121SKalle Valo struct iwl_rx_packet *pkt = rxb_addr(rxb); 2064e705c121SKalle Valo struct iwl_mvm_eosp_notification *notif = (void *)pkt->data; 2065e705c121SKalle Valo struct ieee80211_sta *sta; 2066e705c121SKalle Valo u32 sta_id = le32_to_cpu(notif->sta_id); 2067e705c121SKalle Valo 2068e705c121SKalle Valo if (WARN_ON_ONCE(sta_id >= IWL_MVM_STATION_COUNT)) 2069e705c121SKalle Valo return; 2070e705c121SKalle Valo 2071e705c121SKalle Valo rcu_read_lock(); 2072e705c121SKalle Valo sta = rcu_dereference(mvm->fw_id_to_mac_id[sta_id]); 2073e705c121SKalle Valo if (!IS_ERR_OR_NULL(sta)) 2074e705c121SKalle Valo ieee80211_sta_eosp(sta); 2075e705c121SKalle Valo rcu_read_unlock(); 2076e705c121SKalle Valo } 2077e705c121SKalle Valo 2078e705c121SKalle Valo void iwl_mvm_sta_modify_disable_tx(struct iwl_mvm *mvm, 2079e705c121SKalle Valo struct iwl_mvm_sta *mvmsta, bool disable) 2080e705c121SKalle Valo { 2081e705c121SKalle Valo struct iwl_mvm_add_sta_cmd cmd = { 2082e705c121SKalle Valo .add_modify = STA_MODE_MODIFY, 2083e705c121SKalle Valo .sta_id = mvmsta->sta_id, 2084e705c121SKalle Valo .station_flags = disable ? cpu_to_le32(STA_FLG_DISABLE_TX) : 0, 2085e705c121SKalle Valo .station_flags_msk = cpu_to_le32(STA_FLG_DISABLE_TX), 2086e705c121SKalle Valo .mac_id_n_color = cpu_to_le32(mvmsta->mac_id_n_color), 2087e705c121SKalle Valo }; 2088e705c121SKalle Valo int ret; 2089e705c121SKalle Valo 2090854c5705SSara Sharon ret = iwl_mvm_send_cmd_pdu(mvm, ADD_STA, CMD_ASYNC, 2091854c5705SSara Sharon iwl_mvm_add_sta_cmd_size(mvm), &cmd); 2092e705c121SKalle Valo if (ret) 2093e705c121SKalle Valo IWL_ERR(mvm, "Failed to send ADD_STA command (%d)\n", ret); 2094e705c121SKalle Valo } 2095e705c121SKalle Valo 2096e705c121SKalle Valo void iwl_mvm_sta_modify_disable_tx_ap(struct iwl_mvm *mvm, 2097e705c121SKalle Valo struct ieee80211_sta *sta, 2098e705c121SKalle Valo bool disable) 2099e705c121SKalle Valo { 2100e705c121SKalle Valo struct iwl_mvm_sta *mvm_sta = iwl_mvm_sta_from_mac80211(sta); 2101e705c121SKalle Valo 2102e705c121SKalle Valo spin_lock_bh(&mvm_sta->lock); 2103e705c121SKalle Valo 2104e705c121SKalle Valo if (mvm_sta->disable_tx == disable) { 2105e705c121SKalle Valo spin_unlock_bh(&mvm_sta->lock); 2106e705c121SKalle Valo return; 2107e705c121SKalle Valo } 2108e705c121SKalle Valo 2109e705c121SKalle Valo mvm_sta->disable_tx = disable; 2110e705c121SKalle Valo 2111e705c121SKalle Valo /* 2112e705c121SKalle Valo * Tell mac80211 to start/stop queuing tx for this station, 2113e705c121SKalle Valo * but don't stop queuing if there are still pending frames 2114e705c121SKalle Valo * for this station. 2115e705c121SKalle Valo */ 2116e705c121SKalle Valo if (disable || !atomic_read(&mvm->pending_frames[mvm_sta->sta_id])) 2117e705c121SKalle Valo ieee80211_sta_block_awake(mvm->hw, sta, disable); 2118e705c121SKalle Valo 2119e705c121SKalle Valo iwl_mvm_sta_modify_disable_tx(mvm, mvm_sta, disable); 2120e705c121SKalle Valo 2121e705c121SKalle Valo spin_unlock_bh(&mvm_sta->lock); 2122e705c121SKalle Valo } 2123e705c121SKalle Valo 2124e705c121SKalle Valo void iwl_mvm_modify_all_sta_disable_tx(struct iwl_mvm *mvm, 2125e705c121SKalle Valo struct iwl_mvm_vif *mvmvif, 2126e705c121SKalle Valo bool disable) 2127e705c121SKalle Valo { 2128e705c121SKalle Valo struct ieee80211_sta *sta; 2129e705c121SKalle Valo struct iwl_mvm_sta *mvm_sta; 2130e705c121SKalle Valo int i; 2131e705c121SKalle Valo 2132e705c121SKalle Valo lockdep_assert_held(&mvm->mutex); 2133e705c121SKalle Valo 2134e705c121SKalle Valo /* Block/unblock all the stations of the given mvmvif */ 2135e705c121SKalle Valo for (i = 0; i < IWL_MVM_STATION_COUNT; i++) { 2136e705c121SKalle Valo sta = rcu_dereference_protected(mvm->fw_id_to_mac_id[i], 2137e705c121SKalle Valo lockdep_is_held(&mvm->mutex)); 2138e705c121SKalle Valo if (IS_ERR_OR_NULL(sta)) 2139e705c121SKalle Valo continue; 2140e705c121SKalle Valo 2141e705c121SKalle Valo mvm_sta = iwl_mvm_sta_from_mac80211(sta); 2142e705c121SKalle Valo if (mvm_sta->mac_id_n_color != 2143e705c121SKalle Valo FW_CMD_ID_AND_COLOR(mvmvif->id, mvmvif->color)) 2144e705c121SKalle Valo continue; 2145e705c121SKalle Valo 2146e705c121SKalle Valo iwl_mvm_sta_modify_disable_tx_ap(mvm, sta, disable); 2147e705c121SKalle Valo } 2148e705c121SKalle Valo } 2149e705c121SKalle Valo 2150e705c121SKalle Valo void iwl_mvm_csa_client_absent(struct iwl_mvm *mvm, struct ieee80211_vif *vif) 2151e705c121SKalle Valo { 2152e705c121SKalle Valo struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 2153e705c121SKalle Valo struct iwl_mvm_sta *mvmsta; 2154e705c121SKalle Valo 2155e705c121SKalle Valo rcu_read_lock(); 2156e705c121SKalle Valo 2157e705c121SKalle Valo mvmsta = iwl_mvm_sta_from_staid_rcu(mvm, mvmvif->ap_sta_id); 2158e705c121SKalle Valo 2159e705c121SKalle Valo if (!WARN_ON(!mvmsta)) 2160e705c121SKalle Valo iwl_mvm_sta_modify_disable_tx(mvm, mvmsta, true); 2161e705c121SKalle Valo 2162e705c121SKalle Valo rcu_read_unlock(); 2163e705c121SKalle Valo } 2164