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, 114e705c121SKalle Valo bool update) 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 129e705c121SKalle Valo if (!update) { 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); 132e705c121SKalle Valo } 133e705c121SKalle Valo 134e705c121SKalle Valo switch (sta->bandwidth) { 135e705c121SKalle Valo case IEEE80211_STA_RX_BW_160: 136e705c121SKalle Valo add_sta_cmd.station_flags |= cpu_to_le32(STA_FLG_FAT_EN_160MHZ); 137e705c121SKalle Valo /* fall through */ 138e705c121SKalle Valo case IEEE80211_STA_RX_BW_80: 139e705c121SKalle Valo add_sta_cmd.station_flags |= cpu_to_le32(STA_FLG_FAT_EN_80MHZ); 140e705c121SKalle Valo /* fall through */ 141e705c121SKalle Valo case IEEE80211_STA_RX_BW_40: 142e705c121SKalle Valo add_sta_cmd.station_flags |= cpu_to_le32(STA_FLG_FAT_EN_40MHZ); 143e705c121SKalle Valo /* fall through */ 144e705c121SKalle Valo case IEEE80211_STA_RX_BW_20: 145e705c121SKalle Valo if (sta->ht_cap.ht_supported) 146e705c121SKalle Valo add_sta_cmd.station_flags |= 147e705c121SKalle Valo cpu_to_le32(STA_FLG_FAT_EN_20MHZ); 148e705c121SKalle Valo break; 149e705c121SKalle Valo } 150e705c121SKalle Valo 151e705c121SKalle Valo switch (sta->rx_nss) { 152e705c121SKalle Valo case 1: 153e705c121SKalle Valo add_sta_cmd.station_flags |= cpu_to_le32(STA_FLG_MIMO_EN_SISO); 154e705c121SKalle Valo break; 155e705c121SKalle Valo case 2: 156e705c121SKalle Valo add_sta_cmd.station_flags |= cpu_to_le32(STA_FLG_MIMO_EN_MIMO2); 157e705c121SKalle Valo break; 158e705c121SKalle Valo case 3 ... 8: 159e705c121SKalle Valo add_sta_cmd.station_flags |= cpu_to_le32(STA_FLG_MIMO_EN_MIMO3); 160e705c121SKalle Valo break; 161e705c121SKalle Valo } 162e705c121SKalle Valo 163e705c121SKalle Valo switch (sta->smps_mode) { 164e705c121SKalle Valo case IEEE80211_SMPS_AUTOMATIC: 165e705c121SKalle Valo case IEEE80211_SMPS_NUM_MODES: 166e705c121SKalle Valo WARN_ON(1); 167e705c121SKalle Valo break; 168e705c121SKalle Valo case IEEE80211_SMPS_STATIC: 169e705c121SKalle Valo /* override NSS */ 170e705c121SKalle Valo add_sta_cmd.station_flags &= ~cpu_to_le32(STA_FLG_MIMO_EN_MSK); 171e705c121SKalle Valo add_sta_cmd.station_flags |= cpu_to_le32(STA_FLG_MIMO_EN_SISO); 172e705c121SKalle Valo break; 173e705c121SKalle Valo case IEEE80211_SMPS_DYNAMIC: 174e705c121SKalle Valo add_sta_cmd.station_flags |= cpu_to_le32(STA_FLG_RTS_MIMO_PROT); 175e705c121SKalle Valo break; 176e705c121SKalle Valo case IEEE80211_SMPS_OFF: 177e705c121SKalle Valo /* nothing */ 178e705c121SKalle Valo break; 179e705c121SKalle Valo } 180e705c121SKalle Valo 181e705c121SKalle Valo if (sta->ht_cap.ht_supported) { 182e705c121SKalle Valo add_sta_cmd.station_flags_msk |= 183e705c121SKalle Valo cpu_to_le32(STA_FLG_MAX_AGG_SIZE_MSK | 184e705c121SKalle Valo STA_FLG_AGG_MPDU_DENS_MSK); 185e705c121SKalle Valo 186e705c121SKalle Valo mpdu_dens = sta->ht_cap.ampdu_density; 187e705c121SKalle Valo } 188e705c121SKalle Valo 189e705c121SKalle Valo if (sta->vht_cap.vht_supported) { 190e705c121SKalle Valo agg_size = sta->vht_cap.cap & 191e705c121SKalle Valo IEEE80211_VHT_CAP_MAX_A_MPDU_LENGTH_EXPONENT_MASK; 192e705c121SKalle Valo agg_size >>= 193e705c121SKalle Valo IEEE80211_VHT_CAP_MAX_A_MPDU_LENGTH_EXPONENT_SHIFT; 194e705c121SKalle Valo } else if (sta->ht_cap.ht_supported) { 195e705c121SKalle Valo agg_size = sta->ht_cap.ampdu_factor; 196e705c121SKalle Valo } 197e705c121SKalle Valo 198e705c121SKalle Valo add_sta_cmd.station_flags |= 199e705c121SKalle Valo cpu_to_le32(agg_size << STA_FLG_MAX_AGG_SIZE_SHIFT); 200e705c121SKalle Valo add_sta_cmd.station_flags |= 201e705c121SKalle Valo cpu_to_le32(mpdu_dens << STA_FLG_AGG_MPDU_DENS_SHIFT); 202e705c121SKalle Valo 203e705c121SKalle Valo status = ADD_STA_SUCCESS; 204854c5705SSara Sharon ret = iwl_mvm_send_cmd_pdu_status(mvm, ADD_STA, 205854c5705SSara Sharon iwl_mvm_add_sta_cmd_size(mvm), 206e705c121SKalle Valo &add_sta_cmd, &status); 207e705c121SKalle Valo if (ret) 208e705c121SKalle Valo return ret; 209e705c121SKalle Valo 210837c4da9SSara Sharon switch (status & IWL_ADD_STA_STATUS_MASK) { 211e705c121SKalle Valo case ADD_STA_SUCCESS: 212e705c121SKalle Valo IWL_DEBUG_ASSOC(mvm, "ADD_STA PASSED\n"); 213e705c121SKalle Valo break; 214e705c121SKalle Valo default: 215e705c121SKalle Valo ret = -EIO; 216e705c121SKalle Valo IWL_ERR(mvm, "ADD_STA failed\n"); 217e705c121SKalle Valo break; 218e705c121SKalle Valo } 219e705c121SKalle Valo 220e705c121SKalle Valo return ret; 221e705c121SKalle Valo } 222e705c121SKalle Valo 223e705c121SKalle Valo static int iwl_mvm_tdls_sta_init(struct iwl_mvm *mvm, 224e705c121SKalle Valo struct ieee80211_sta *sta) 225e705c121SKalle Valo { 226e705c121SKalle Valo unsigned long used_hw_queues; 227e705c121SKalle Valo struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta); 228e705c121SKalle Valo unsigned int wdg_timeout = 229e705c121SKalle Valo iwl_mvm_get_wd_timeout(mvm, NULL, true, false); 230e705c121SKalle Valo u32 ac; 231e705c121SKalle Valo 232e705c121SKalle Valo lockdep_assert_held(&mvm->mutex); 233e705c121SKalle Valo 234e705c121SKalle Valo used_hw_queues = iwl_mvm_get_used_hw_queues(mvm, NULL); 235e705c121SKalle Valo 236e705c121SKalle Valo /* Find available queues, and allocate them to the ACs */ 237e705c121SKalle Valo for (ac = 0; ac < IEEE80211_NUM_ACS; ac++) { 238e705c121SKalle Valo u8 queue = find_first_zero_bit(&used_hw_queues, 239e705c121SKalle Valo mvm->first_agg_queue); 240e705c121SKalle Valo 241e705c121SKalle Valo if (queue >= mvm->first_agg_queue) { 242e705c121SKalle Valo IWL_ERR(mvm, "Failed to allocate STA queue\n"); 243e705c121SKalle Valo return -EBUSY; 244e705c121SKalle Valo } 245e705c121SKalle Valo 246e705c121SKalle Valo __set_bit(queue, &used_hw_queues); 247e705c121SKalle Valo mvmsta->hw_queue[ac] = queue; 248e705c121SKalle Valo } 249e705c121SKalle Valo 250e705c121SKalle Valo /* Found a place for all queues - enable them */ 251e705c121SKalle Valo for (ac = 0; ac < IEEE80211_NUM_ACS; ac++) { 252e705c121SKalle Valo iwl_mvm_enable_ac_txq(mvm, mvmsta->hw_queue[ac], 253e705c121SKalle Valo mvmsta->hw_queue[ac], 254e705c121SKalle Valo iwl_mvm_ac_to_tx_fifo[ac], 0, 255e705c121SKalle Valo wdg_timeout); 256e705c121SKalle Valo mvmsta->tfd_queue_msk |= BIT(mvmsta->hw_queue[ac]); 257e705c121SKalle Valo } 258e705c121SKalle Valo 259e705c121SKalle Valo return 0; 260e705c121SKalle Valo } 261e705c121SKalle Valo 262e705c121SKalle Valo static void iwl_mvm_tdls_sta_deinit(struct iwl_mvm *mvm, 263e705c121SKalle Valo struct ieee80211_sta *sta) 264e705c121SKalle Valo { 265e705c121SKalle Valo struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta); 266e705c121SKalle Valo unsigned long sta_msk; 267e705c121SKalle Valo int i; 268e705c121SKalle Valo 269e705c121SKalle Valo lockdep_assert_held(&mvm->mutex); 270e705c121SKalle Valo 271e705c121SKalle Valo /* disable the TDLS STA-specific queues */ 272e705c121SKalle Valo sta_msk = mvmsta->tfd_queue_msk; 273e705c121SKalle Valo for_each_set_bit(i, &sta_msk, sizeof(sta_msk) * BITS_PER_BYTE) 274e705c121SKalle Valo iwl_mvm_disable_txq(mvm, i, i, IWL_MAX_TID_COUNT, 0); 275e705c121SKalle Valo } 276e705c121SKalle Valo 277e705c121SKalle Valo int iwl_mvm_add_sta(struct iwl_mvm *mvm, 278e705c121SKalle Valo struct ieee80211_vif *vif, 279e705c121SKalle Valo struct ieee80211_sta *sta) 280e705c121SKalle Valo { 281e705c121SKalle Valo struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 282e705c121SKalle Valo struct iwl_mvm_sta *mvm_sta = iwl_mvm_sta_from_mac80211(sta); 283e705c121SKalle Valo int i, ret, sta_id; 284e705c121SKalle Valo 285e705c121SKalle Valo lockdep_assert_held(&mvm->mutex); 286e705c121SKalle Valo 287e705c121SKalle Valo if (!test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status)) 288e705c121SKalle Valo sta_id = iwl_mvm_find_free_sta_id(mvm, 289e705c121SKalle Valo ieee80211_vif_type_p2p(vif)); 290e705c121SKalle Valo else 291e705c121SKalle Valo sta_id = mvm_sta->sta_id; 292e705c121SKalle Valo 293e705c121SKalle Valo if (sta_id == IWL_MVM_STATION_COUNT) 294e705c121SKalle Valo return -ENOSPC; 295e705c121SKalle Valo 296e705c121SKalle Valo spin_lock_init(&mvm_sta->lock); 297e705c121SKalle Valo 298e705c121SKalle Valo mvm_sta->sta_id = sta_id; 299e705c121SKalle Valo mvm_sta->mac_id_n_color = FW_CMD_ID_AND_COLOR(mvmvif->id, 300e705c121SKalle Valo mvmvif->color); 301e705c121SKalle Valo mvm_sta->vif = vif; 302e705c121SKalle Valo mvm_sta->max_agg_bufsize = LINK_QUAL_AGG_FRAME_LIMIT_DEF; 303e705c121SKalle Valo mvm_sta->tx_protection = 0; 304e705c121SKalle Valo mvm_sta->tt_tx_protection = false; 305e705c121SKalle Valo 306e705c121SKalle Valo /* HW restart, don't assume the memory has been zeroed */ 307e705c121SKalle Valo atomic_set(&mvm->pending_frames[sta_id], 0); 308e705c121SKalle Valo mvm_sta->tid_disable_agg = 0xffff; /* No aggs at first */ 309e705c121SKalle Valo mvm_sta->tfd_queue_msk = 0; 310e705c121SKalle Valo 311e705c121SKalle Valo /* allocate new queues for a TDLS station */ 312e705c121SKalle Valo if (sta->tdls) { 313e705c121SKalle Valo ret = iwl_mvm_tdls_sta_init(mvm, sta); 314e705c121SKalle Valo if (ret) 315e705c121SKalle Valo return ret; 316e705c121SKalle Valo } else { 317e705c121SKalle Valo for (i = 0; i < IEEE80211_NUM_ACS; i++) 318e705c121SKalle Valo if (vif->hw_queue[i] != IEEE80211_INVAL_HW_QUEUE) 319e705c121SKalle Valo mvm_sta->tfd_queue_msk |= BIT(vif->hw_queue[i]); 320e705c121SKalle Valo } 321e705c121SKalle Valo 322e705c121SKalle Valo /* for HW restart - reset everything but the sequence number */ 323e705c121SKalle Valo for (i = 0; i < IWL_MAX_TID_COUNT; i++) { 324e705c121SKalle Valo u16 seq = mvm_sta->tid_data[i].seq_number; 325e705c121SKalle Valo memset(&mvm_sta->tid_data[i], 0, sizeof(mvm_sta->tid_data[i])); 326e705c121SKalle Valo mvm_sta->tid_data[i].seq_number = seq; 327e705c121SKalle Valo } 328e705c121SKalle Valo mvm_sta->agg_tids = 0; 329e705c121SKalle Valo 330e705c121SKalle Valo ret = iwl_mvm_sta_send_to_fw(mvm, sta, false); 331e705c121SKalle Valo if (ret) 332e705c121SKalle Valo goto err; 333e705c121SKalle Valo 334e705c121SKalle Valo if (vif->type == NL80211_IFTYPE_STATION) { 335e705c121SKalle Valo if (!sta->tdls) { 336e705c121SKalle Valo WARN_ON(mvmvif->ap_sta_id != IWL_MVM_STATION_COUNT); 337e705c121SKalle Valo mvmvif->ap_sta_id = sta_id; 338e705c121SKalle Valo } else { 339e705c121SKalle Valo WARN_ON(mvmvif->ap_sta_id == IWL_MVM_STATION_COUNT); 340e705c121SKalle Valo } 341e705c121SKalle Valo } 342e705c121SKalle Valo 343e705c121SKalle Valo rcu_assign_pointer(mvm->fw_id_to_mac_id[sta_id], sta); 344e705c121SKalle Valo 345e705c121SKalle Valo return 0; 346e705c121SKalle Valo 347e705c121SKalle Valo err: 348e705c121SKalle Valo iwl_mvm_tdls_sta_deinit(mvm, sta); 349e705c121SKalle Valo return ret; 350e705c121SKalle Valo } 351e705c121SKalle Valo 352e705c121SKalle Valo int iwl_mvm_update_sta(struct iwl_mvm *mvm, 353e705c121SKalle Valo struct ieee80211_vif *vif, 354e705c121SKalle Valo struct ieee80211_sta *sta) 355e705c121SKalle Valo { 356e705c121SKalle Valo return iwl_mvm_sta_send_to_fw(mvm, sta, true); 357e705c121SKalle Valo } 358e705c121SKalle Valo 359e705c121SKalle Valo int iwl_mvm_drain_sta(struct iwl_mvm *mvm, struct iwl_mvm_sta *mvmsta, 360e705c121SKalle Valo bool drain) 361e705c121SKalle Valo { 362e705c121SKalle Valo struct iwl_mvm_add_sta_cmd cmd = {}; 363e705c121SKalle Valo int ret; 364e705c121SKalle Valo u32 status; 365e705c121SKalle Valo 366e705c121SKalle Valo lockdep_assert_held(&mvm->mutex); 367e705c121SKalle Valo 368e705c121SKalle Valo cmd.mac_id_n_color = cpu_to_le32(mvmsta->mac_id_n_color); 369e705c121SKalle Valo cmd.sta_id = mvmsta->sta_id; 370e705c121SKalle Valo cmd.add_modify = STA_MODE_MODIFY; 371e705c121SKalle Valo cmd.station_flags = drain ? cpu_to_le32(STA_FLG_DRAIN_FLOW) : 0; 372e705c121SKalle Valo cmd.station_flags_msk = cpu_to_le32(STA_FLG_DRAIN_FLOW); 373e705c121SKalle Valo 374e705c121SKalle Valo status = ADD_STA_SUCCESS; 375854c5705SSara Sharon ret = iwl_mvm_send_cmd_pdu_status(mvm, ADD_STA, 376854c5705SSara Sharon iwl_mvm_add_sta_cmd_size(mvm), 377e705c121SKalle Valo &cmd, &status); 378e705c121SKalle Valo if (ret) 379e705c121SKalle Valo return ret; 380e705c121SKalle Valo 381837c4da9SSara Sharon switch (status & IWL_ADD_STA_STATUS_MASK) { 382e705c121SKalle Valo case ADD_STA_SUCCESS: 383e705c121SKalle Valo IWL_DEBUG_INFO(mvm, "Frames for staid %d will drained in fw\n", 384e705c121SKalle Valo mvmsta->sta_id); 385e705c121SKalle Valo break; 386e705c121SKalle Valo default: 387e705c121SKalle Valo ret = -EIO; 388e705c121SKalle Valo IWL_ERR(mvm, "Couldn't drain frames for staid %d\n", 389e705c121SKalle Valo mvmsta->sta_id); 390e705c121SKalle Valo break; 391e705c121SKalle Valo } 392e705c121SKalle Valo 393e705c121SKalle Valo return ret; 394e705c121SKalle Valo } 395e705c121SKalle Valo 396e705c121SKalle Valo /* 397e705c121SKalle Valo * Remove a station from the FW table. Before sending the command to remove 398e705c121SKalle Valo * the station validate that the station is indeed known to the driver (sanity 399e705c121SKalle Valo * only). 400e705c121SKalle Valo */ 401e705c121SKalle Valo static int iwl_mvm_rm_sta_common(struct iwl_mvm *mvm, u8 sta_id) 402e705c121SKalle Valo { 403e705c121SKalle Valo struct ieee80211_sta *sta; 404e705c121SKalle Valo struct iwl_mvm_rm_sta_cmd rm_sta_cmd = { 405e705c121SKalle Valo .sta_id = sta_id, 406e705c121SKalle Valo }; 407e705c121SKalle Valo int ret; 408e705c121SKalle Valo 409e705c121SKalle Valo sta = rcu_dereference_protected(mvm->fw_id_to_mac_id[sta_id], 410e705c121SKalle Valo lockdep_is_held(&mvm->mutex)); 411e705c121SKalle Valo 412e705c121SKalle Valo /* Note: internal stations are marked as error values */ 413e705c121SKalle Valo if (!sta) { 414e705c121SKalle Valo IWL_ERR(mvm, "Invalid station id\n"); 415e705c121SKalle Valo return -EINVAL; 416e705c121SKalle Valo } 417e705c121SKalle Valo 418e705c121SKalle Valo ret = iwl_mvm_send_cmd_pdu(mvm, REMOVE_STA, 0, 419e705c121SKalle Valo sizeof(rm_sta_cmd), &rm_sta_cmd); 420e705c121SKalle Valo if (ret) { 421e705c121SKalle Valo IWL_ERR(mvm, "Failed to remove station. Id=%d\n", sta_id); 422e705c121SKalle Valo return ret; 423e705c121SKalle Valo } 424e705c121SKalle Valo 425e705c121SKalle Valo return 0; 426e705c121SKalle Valo } 427e705c121SKalle Valo 428e705c121SKalle Valo void iwl_mvm_sta_drained_wk(struct work_struct *wk) 429e705c121SKalle Valo { 430e705c121SKalle Valo struct iwl_mvm *mvm = container_of(wk, struct iwl_mvm, sta_drained_wk); 431e705c121SKalle Valo u8 sta_id; 432e705c121SKalle Valo 433e705c121SKalle Valo /* 434e705c121SKalle Valo * The mutex is needed because of the SYNC cmd, but not only: if the 435e705c121SKalle Valo * work would run concurrently with iwl_mvm_rm_sta, it would run before 436e705c121SKalle Valo * iwl_mvm_rm_sta sets the station as busy, and exit. Then 437e705c121SKalle Valo * iwl_mvm_rm_sta would set the station as busy, and nobody will clean 438e705c121SKalle Valo * that later. 439e705c121SKalle Valo */ 440e705c121SKalle Valo mutex_lock(&mvm->mutex); 441e705c121SKalle Valo 442e705c121SKalle Valo for_each_set_bit(sta_id, mvm->sta_drained, IWL_MVM_STATION_COUNT) { 443e705c121SKalle Valo int ret; 444e705c121SKalle Valo struct ieee80211_sta *sta = 445e705c121SKalle Valo rcu_dereference_protected(mvm->fw_id_to_mac_id[sta_id], 446e705c121SKalle Valo lockdep_is_held(&mvm->mutex)); 447e705c121SKalle Valo 448e705c121SKalle Valo /* 449e705c121SKalle Valo * This station is in use or RCU-removed; the latter happens in 450e705c121SKalle Valo * managed mode, where mac80211 removes the station before we 451e705c121SKalle Valo * can remove it from firmware (we can only do that after the 452e705c121SKalle Valo * MAC is marked unassociated), and possibly while the deauth 453e705c121SKalle Valo * frame to disconnect from the AP is still queued. Then, the 454e705c121SKalle Valo * station pointer is -ENOENT when the last skb is reclaimed. 455e705c121SKalle Valo */ 456e705c121SKalle Valo if (!IS_ERR(sta) || PTR_ERR(sta) == -ENOENT) 457e705c121SKalle Valo continue; 458e705c121SKalle Valo 459e705c121SKalle Valo if (PTR_ERR(sta) == -EINVAL) { 460e705c121SKalle Valo IWL_ERR(mvm, "Drained sta %d, but it is internal?\n", 461e705c121SKalle Valo sta_id); 462e705c121SKalle Valo continue; 463e705c121SKalle Valo } 464e705c121SKalle Valo 465e705c121SKalle Valo if (!sta) { 466e705c121SKalle Valo IWL_ERR(mvm, "Drained sta %d, but it was NULL?\n", 467e705c121SKalle Valo sta_id); 468e705c121SKalle Valo continue; 469e705c121SKalle Valo } 470e705c121SKalle Valo 471e705c121SKalle Valo WARN_ON(PTR_ERR(sta) != -EBUSY); 472e705c121SKalle Valo /* This station was removed and we waited until it got drained, 473e705c121SKalle Valo * we can now proceed and remove it. 474e705c121SKalle Valo */ 475e705c121SKalle Valo ret = iwl_mvm_rm_sta_common(mvm, sta_id); 476e705c121SKalle Valo if (ret) { 477e705c121SKalle Valo IWL_ERR(mvm, 478e705c121SKalle Valo "Couldn't remove sta %d after it was drained\n", 479e705c121SKalle Valo sta_id); 480e705c121SKalle Valo continue; 481e705c121SKalle Valo } 482e705c121SKalle Valo RCU_INIT_POINTER(mvm->fw_id_to_mac_id[sta_id], NULL); 483e705c121SKalle Valo clear_bit(sta_id, mvm->sta_drained); 484e705c121SKalle Valo 485e705c121SKalle Valo if (mvm->tfd_drained[sta_id]) { 486e705c121SKalle Valo unsigned long i, msk = mvm->tfd_drained[sta_id]; 487e705c121SKalle Valo 488e705c121SKalle Valo for_each_set_bit(i, &msk, sizeof(msk) * BITS_PER_BYTE) 489e705c121SKalle Valo iwl_mvm_disable_txq(mvm, i, i, 490e705c121SKalle Valo IWL_MAX_TID_COUNT, 0); 491e705c121SKalle Valo 492e705c121SKalle Valo mvm->tfd_drained[sta_id] = 0; 493e705c121SKalle Valo IWL_DEBUG_TDLS(mvm, "Drained sta %d, with queues %ld\n", 494e705c121SKalle Valo sta_id, msk); 495e705c121SKalle Valo } 496e705c121SKalle Valo } 497e705c121SKalle Valo 498e705c121SKalle Valo mutex_unlock(&mvm->mutex); 499e705c121SKalle Valo } 500e705c121SKalle Valo 501e705c121SKalle Valo int iwl_mvm_rm_sta(struct iwl_mvm *mvm, 502e705c121SKalle Valo struct ieee80211_vif *vif, 503e705c121SKalle Valo struct ieee80211_sta *sta) 504e705c121SKalle Valo { 505e705c121SKalle Valo struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 506e705c121SKalle Valo struct iwl_mvm_sta *mvm_sta = iwl_mvm_sta_from_mac80211(sta); 507e705c121SKalle Valo int ret; 508e705c121SKalle Valo 509e705c121SKalle Valo lockdep_assert_held(&mvm->mutex); 510e705c121SKalle Valo 511e705c121SKalle Valo if (vif->type == NL80211_IFTYPE_STATION && 512e705c121SKalle Valo mvmvif->ap_sta_id == mvm_sta->sta_id) { 513e705c121SKalle Valo ret = iwl_mvm_drain_sta(mvm, mvm_sta, true); 514e705c121SKalle Valo if (ret) 515e705c121SKalle Valo return ret; 516e705c121SKalle Valo /* flush its queues here since we are freeing mvm_sta */ 517e705c121SKalle Valo ret = iwl_mvm_flush_tx_path(mvm, mvm_sta->tfd_queue_msk, 0); 518e705c121SKalle Valo if (ret) 519e705c121SKalle Valo return ret; 520e705c121SKalle Valo ret = iwl_trans_wait_tx_queue_empty(mvm->trans, 521e705c121SKalle Valo mvm_sta->tfd_queue_msk); 522e705c121SKalle Valo if (ret) 523e705c121SKalle Valo return ret; 524e705c121SKalle Valo ret = iwl_mvm_drain_sta(mvm, mvm_sta, false); 525e705c121SKalle Valo 526e705c121SKalle Valo /* if we are associated - we can't remove the AP STA now */ 527e705c121SKalle Valo if (vif->bss_conf.assoc) 528e705c121SKalle Valo return ret; 529e705c121SKalle Valo 530e705c121SKalle Valo /* unassoc - go ahead - remove the AP STA now */ 531e705c121SKalle Valo mvmvif->ap_sta_id = IWL_MVM_STATION_COUNT; 532e705c121SKalle Valo 533e705c121SKalle Valo /* clear d0i3_ap_sta_id if no longer relevant */ 534e705c121SKalle Valo if (mvm->d0i3_ap_sta_id == mvm_sta->sta_id) 535e705c121SKalle Valo mvm->d0i3_ap_sta_id = IWL_MVM_STATION_COUNT; 536e705c121SKalle Valo } 537e705c121SKalle Valo 538e705c121SKalle Valo /* 539e705c121SKalle Valo * This shouldn't happen - the TDLS channel switch should be canceled 540e705c121SKalle Valo * before the STA is removed. 541e705c121SKalle Valo */ 542e705c121SKalle Valo if (WARN_ON_ONCE(mvm->tdls_cs.peer.sta_id == mvm_sta->sta_id)) { 543e705c121SKalle Valo mvm->tdls_cs.peer.sta_id = IWL_MVM_STATION_COUNT; 544e705c121SKalle Valo cancel_delayed_work(&mvm->tdls_cs.dwork); 545e705c121SKalle Valo } 546e705c121SKalle Valo 547e705c121SKalle Valo /* 548e705c121SKalle Valo * Make sure that the tx response code sees the station as -EBUSY and 549e705c121SKalle Valo * calls the drain worker. 550e705c121SKalle Valo */ 551e705c121SKalle Valo spin_lock_bh(&mvm_sta->lock); 552e705c121SKalle Valo /* 553e705c121SKalle Valo * There are frames pending on the AC queues for this station. 554e705c121SKalle Valo * We need to wait until all the frames are drained... 555e705c121SKalle Valo */ 556e705c121SKalle Valo if (atomic_read(&mvm->pending_frames[mvm_sta->sta_id])) { 557e705c121SKalle Valo rcu_assign_pointer(mvm->fw_id_to_mac_id[mvm_sta->sta_id], 558e705c121SKalle Valo ERR_PTR(-EBUSY)); 559e705c121SKalle Valo spin_unlock_bh(&mvm_sta->lock); 560e705c121SKalle Valo 561e705c121SKalle Valo /* disable TDLS sta queues on drain complete */ 562e705c121SKalle Valo if (sta->tdls) { 563e705c121SKalle Valo mvm->tfd_drained[mvm_sta->sta_id] = 564e705c121SKalle Valo mvm_sta->tfd_queue_msk; 565e705c121SKalle Valo IWL_DEBUG_TDLS(mvm, "Draining TDLS sta %d\n", 566e705c121SKalle Valo mvm_sta->sta_id); 567e705c121SKalle Valo } 568e705c121SKalle Valo 569e705c121SKalle Valo ret = iwl_mvm_drain_sta(mvm, mvm_sta, true); 570e705c121SKalle Valo } else { 571e705c121SKalle Valo spin_unlock_bh(&mvm_sta->lock); 572e705c121SKalle Valo 573e705c121SKalle Valo if (sta->tdls) 574e705c121SKalle Valo iwl_mvm_tdls_sta_deinit(mvm, sta); 575e705c121SKalle Valo 576e705c121SKalle Valo ret = iwl_mvm_rm_sta_common(mvm, mvm_sta->sta_id); 577e705c121SKalle Valo RCU_INIT_POINTER(mvm->fw_id_to_mac_id[mvm_sta->sta_id], NULL); 578e705c121SKalle Valo } 579e705c121SKalle Valo 580e705c121SKalle Valo return ret; 581e705c121SKalle Valo } 582e705c121SKalle Valo 583e705c121SKalle Valo int iwl_mvm_rm_sta_id(struct iwl_mvm *mvm, 584e705c121SKalle Valo struct ieee80211_vif *vif, 585e705c121SKalle Valo u8 sta_id) 586e705c121SKalle Valo { 587e705c121SKalle Valo int ret = iwl_mvm_rm_sta_common(mvm, sta_id); 588e705c121SKalle Valo 589e705c121SKalle Valo lockdep_assert_held(&mvm->mutex); 590e705c121SKalle Valo 591e705c121SKalle Valo RCU_INIT_POINTER(mvm->fw_id_to_mac_id[sta_id], NULL); 592e705c121SKalle Valo return ret; 593e705c121SKalle Valo } 594e705c121SKalle Valo 5950e39eb03SChaya Rachel Ivgi int iwl_mvm_allocate_int_sta(struct iwl_mvm *mvm, 596e705c121SKalle Valo struct iwl_mvm_int_sta *sta, 597e705c121SKalle Valo u32 qmask, enum nl80211_iftype iftype) 598e705c121SKalle Valo { 599e705c121SKalle Valo if (!test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status)) { 600e705c121SKalle Valo sta->sta_id = iwl_mvm_find_free_sta_id(mvm, iftype); 601e705c121SKalle Valo if (WARN_ON_ONCE(sta->sta_id == IWL_MVM_STATION_COUNT)) 602e705c121SKalle Valo return -ENOSPC; 603e705c121SKalle Valo } 604e705c121SKalle Valo 605e705c121SKalle Valo sta->tfd_queue_msk = qmask; 606e705c121SKalle Valo 607e705c121SKalle Valo /* put a non-NULL value so iterating over the stations won't stop */ 608e705c121SKalle Valo rcu_assign_pointer(mvm->fw_id_to_mac_id[sta->sta_id], ERR_PTR(-EINVAL)); 609e705c121SKalle Valo return 0; 610e705c121SKalle Valo } 611e705c121SKalle Valo 612e705c121SKalle Valo static void iwl_mvm_dealloc_int_sta(struct iwl_mvm *mvm, 613e705c121SKalle Valo struct iwl_mvm_int_sta *sta) 614e705c121SKalle Valo { 615e705c121SKalle Valo RCU_INIT_POINTER(mvm->fw_id_to_mac_id[sta->sta_id], NULL); 616e705c121SKalle Valo memset(sta, 0, sizeof(struct iwl_mvm_int_sta)); 617e705c121SKalle Valo sta->sta_id = IWL_MVM_STATION_COUNT; 618e705c121SKalle Valo } 619e705c121SKalle Valo 620e705c121SKalle Valo static int iwl_mvm_add_int_sta_common(struct iwl_mvm *mvm, 621e705c121SKalle Valo struct iwl_mvm_int_sta *sta, 622e705c121SKalle Valo const u8 *addr, 623e705c121SKalle Valo u16 mac_id, u16 color) 624e705c121SKalle Valo { 625e705c121SKalle Valo struct iwl_mvm_add_sta_cmd cmd; 626e705c121SKalle Valo int ret; 627e705c121SKalle Valo u32 status; 628e705c121SKalle Valo 629e705c121SKalle Valo lockdep_assert_held(&mvm->mutex); 630e705c121SKalle Valo 631e705c121SKalle Valo memset(&cmd, 0, sizeof(cmd)); 632e705c121SKalle Valo cmd.sta_id = sta->sta_id; 633e705c121SKalle Valo cmd.mac_id_n_color = cpu_to_le32(FW_CMD_ID_AND_COLOR(mac_id, 634e705c121SKalle Valo color)); 635e705c121SKalle Valo 636e705c121SKalle Valo cmd.tfd_queue_msk = cpu_to_le32(sta->tfd_queue_msk); 637cf0cda19SLiad Kaufman cmd.tid_disable_tx = cpu_to_le16(0xffff); 638e705c121SKalle Valo 639e705c121SKalle Valo if (addr) 640e705c121SKalle Valo memcpy(cmd.addr, addr, ETH_ALEN); 641e705c121SKalle Valo 642854c5705SSara Sharon ret = iwl_mvm_send_cmd_pdu_status(mvm, ADD_STA, 643854c5705SSara Sharon iwl_mvm_add_sta_cmd_size(mvm), 644e705c121SKalle Valo &cmd, &status); 645e705c121SKalle Valo if (ret) 646e705c121SKalle Valo return ret; 647e705c121SKalle Valo 648837c4da9SSara Sharon switch (status & IWL_ADD_STA_STATUS_MASK) { 649e705c121SKalle Valo case ADD_STA_SUCCESS: 650e705c121SKalle Valo IWL_DEBUG_INFO(mvm, "Internal station added.\n"); 651e705c121SKalle Valo return 0; 652e705c121SKalle Valo default: 653e705c121SKalle Valo ret = -EIO; 654e705c121SKalle Valo IWL_ERR(mvm, "Add internal station failed, status=0x%x\n", 655e705c121SKalle Valo status); 656e705c121SKalle Valo break; 657e705c121SKalle Valo } 658e705c121SKalle Valo return ret; 659e705c121SKalle Valo } 660e705c121SKalle Valo 661e705c121SKalle Valo int iwl_mvm_add_aux_sta(struct iwl_mvm *mvm) 662e705c121SKalle Valo { 663e705c121SKalle Valo unsigned int wdg_timeout = iwlmvm_mod_params.tfd_q_hang_detect ? 664e705c121SKalle Valo mvm->cfg->base_params->wd_timeout : 665e705c121SKalle Valo IWL_WATCHDOG_DISABLED; 666e705c121SKalle Valo int ret; 667e705c121SKalle Valo 668e705c121SKalle Valo lockdep_assert_held(&mvm->mutex); 669e705c121SKalle Valo 670e705c121SKalle Valo /* Map Aux queue to fifo - needs to happen before adding Aux station */ 671e705c121SKalle Valo iwl_mvm_enable_ac_txq(mvm, mvm->aux_queue, mvm->aux_queue, 672e705c121SKalle Valo IWL_MVM_TX_FIFO_MCAST, 0, wdg_timeout); 673e705c121SKalle Valo 674e705c121SKalle Valo /* Allocate aux station and assign to it the aux queue */ 675e705c121SKalle Valo ret = iwl_mvm_allocate_int_sta(mvm, &mvm->aux_sta, BIT(mvm->aux_queue), 676e705c121SKalle Valo NL80211_IFTYPE_UNSPECIFIED); 677e705c121SKalle Valo if (ret) 678e705c121SKalle Valo return ret; 679e705c121SKalle Valo 680e705c121SKalle Valo ret = iwl_mvm_add_int_sta_common(mvm, &mvm->aux_sta, NULL, 681e705c121SKalle Valo MAC_INDEX_AUX, 0); 682e705c121SKalle Valo 683e705c121SKalle Valo if (ret) 684e705c121SKalle Valo iwl_mvm_dealloc_int_sta(mvm, &mvm->aux_sta); 685e705c121SKalle Valo return ret; 686e705c121SKalle Valo } 687e705c121SKalle Valo 6880e39eb03SChaya Rachel Ivgi int iwl_mvm_add_snif_sta(struct iwl_mvm *mvm, struct ieee80211_vif *vif) 6890e39eb03SChaya Rachel Ivgi { 6900e39eb03SChaya Rachel Ivgi struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 6910e39eb03SChaya Rachel Ivgi 6920e39eb03SChaya Rachel Ivgi lockdep_assert_held(&mvm->mutex); 6930e39eb03SChaya Rachel Ivgi return iwl_mvm_add_int_sta_common(mvm, &mvm->snif_sta, vif->addr, 6940e39eb03SChaya Rachel Ivgi mvmvif->id, 0); 6950e39eb03SChaya Rachel Ivgi } 6960e39eb03SChaya Rachel Ivgi 6970e39eb03SChaya Rachel Ivgi int iwl_mvm_rm_snif_sta(struct iwl_mvm *mvm, struct ieee80211_vif *vif) 6980e39eb03SChaya Rachel Ivgi { 6990e39eb03SChaya Rachel Ivgi int ret; 7000e39eb03SChaya Rachel Ivgi 7010e39eb03SChaya Rachel Ivgi lockdep_assert_held(&mvm->mutex); 7020e39eb03SChaya Rachel Ivgi 7030e39eb03SChaya Rachel Ivgi ret = iwl_mvm_rm_sta_common(mvm, mvm->snif_sta.sta_id); 7040e39eb03SChaya Rachel Ivgi if (ret) 7050e39eb03SChaya Rachel Ivgi IWL_WARN(mvm, "Failed sending remove station\n"); 7060e39eb03SChaya Rachel Ivgi 7070e39eb03SChaya Rachel Ivgi return ret; 7080e39eb03SChaya Rachel Ivgi } 7090e39eb03SChaya Rachel Ivgi 7100e39eb03SChaya Rachel Ivgi void iwl_mvm_dealloc_snif_sta(struct iwl_mvm *mvm) 7110e39eb03SChaya Rachel Ivgi { 7120e39eb03SChaya Rachel Ivgi iwl_mvm_dealloc_int_sta(mvm, &mvm->snif_sta); 7130e39eb03SChaya Rachel Ivgi } 7140e39eb03SChaya Rachel Ivgi 715e705c121SKalle Valo void iwl_mvm_del_aux_sta(struct iwl_mvm *mvm) 716e705c121SKalle Valo { 717e705c121SKalle Valo lockdep_assert_held(&mvm->mutex); 718e705c121SKalle Valo 719e705c121SKalle Valo iwl_mvm_dealloc_int_sta(mvm, &mvm->aux_sta); 720e705c121SKalle Valo } 721e705c121SKalle Valo 722e705c121SKalle Valo /* 723e705c121SKalle Valo * Send the add station command for the vif's broadcast station. 724e705c121SKalle Valo * Assumes that the station was already allocated. 725e705c121SKalle Valo * 726e705c121SKalle Valo * @mvm: the mvm component 727e705c121SKalle Valo * @vif: the interface to which the broadcast station is added 728e705c121SKalle Valo * @bsta: the broadcast station to add. 729e705c121SKalle Valo */ 730e705c121SKalle Valo int iwl_mvm_send_add_bcast_sta(struct iwl_mvm *mvm, struct ieee80211_vif *vif) 731e705c121SKalle Valo { 732e705c121SKalle Valo struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 733e705c121SKalle Valo struct iwl_mvm_int_sta *bsta = &mvmvif->bcast_sta; 734e705c121SKalle Valo static const u8 _baddr[] = {0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF}; 735e705c121SKalle Valo const u8 *baddr = _baddr; 736e705c121SKalle Valo 737e705c121SKalle Valo lockdep_assert_held(&mvm->mutex); 738e705c121SKalle Valo 739e705c121SKalle Valo if (vif->type == NL80211_IFTYPE_ADHOC) 740e705c121SKalle Valo baddr = vif->bss_conf.bssid; 741e705c121SKalle Valo 742e705c121SKalle Valo if (WARN_ON_ONCE(bsta->sta_id == IWL_MVM_STATION_COUNT)) 743e705c121SKalle Valo return -ENOSPC; 744e705c121SKalle Valo 745e705c121SKalle Valo return iwl_mvm_add_int_sta_common(mvm, bsta, baddr, 746e705c121SKalle Valo mvmvif->id, mvmvif->color); 747e705c121SKalle Valo } 748e705c121SKalle Valo 749e705c121SKalle Valo /* Send the FW a request to remove the station from it's internal data 750e705c121SKalle Valo * structures, but DO NOT remove the entry from the local data structures. */ 751e705c121SKalle Valo int iwl_mvm_send_rm_bcast_sta(struct iwl_mvm *mvm, struct ieee80211_vif *vif) 752e705c121SKalle Valo { 753e705c121SKalle Valo struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 754e705c121SKalle Valo int ret; 755e705c121SKalle Valo 756e705c121SKalle Valo lockdep_assert_held(&mvm->mutex); 757e705c121SKalle Valo 758e705c121SKalle Valo ret = iwl_mvm_rm_sta_common(mvm, mvmvif->bcast_sta.sta_id); 759e705c121SKalle Valo if (ret) 760e705c121SKalle Valo IWL_WARN(mvm, "Failed sending remove station\n"); 761e705c121SKalle Valo return ret; 762e705c121SKalle Valo } 763e705c121SKalle Valo 764e705c121SKalle Valo int iwl_mvm_alloc_bcast_sta(struct iwl_mvm *mvm, struct ieee80211_vif *vif) 765e705c121SKalle Valo { 766e705c121SKalle Valo struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 767e705c121SKalle Valo u32 qmask; 768e705c121SKalle Valo 769e705c121SKalle Valo lockdep_assert_held(&mvm->mutex); 770e705c121SKalle Valo 771e705c121SKalle Valo qmask = iwl_mvm_mac_get_queues_mask(vif); 772e705c121SKalle Valo 773e705c121SKalle Valo /* 774e705c121SKalle Valo * The firmware defines the TFD queue mask to only be relevant 775e705c121SKalle Valo * for *unicast* queues, so the multicast (CAB) queue shouldn't 776e705c121SKalle Valo * be included. 777e705c121SKalle Valo */ 778e705c121SKalle Valo if (vif->type == NL80211_IFTYPE_AP) 779e705c121SKalle Valo qmask &= ~BIT(vif->cab_queue); 780e705c121SKalle Valo 781e705c121SKalle Valo return iwl_mvm_allocate_int_sta(mvm, &mvmvif->bcast_sta, qmask, 782e705c121SKalle Valo ieee80211_vif_type_p2p(vif)); 783e705c121SKalle Valo } 784e705c121SKalle Valo 785e705c121SKalle Valo /* Allocate a new station entry for the broadcast station to the given vif, 786e705c121SKalle Valo * and send it to the FW. 787e705c121SKalle Valo * Note that each P2P mac should have its own broadcast station. 788e705c121SKalle Valo * 789e705c121SKalle Valo * @mvm: the mvm component 790e705c121SKalle Valo * @vif: the interface to which the broadcast station is added 791e705c121SKalle Valo * @bsta: the broadcast station to add. */ 792e705c121SKalle Valo int iwl_mvm_add_bcast_sta(struct iwl_mvm *mvm, struct ieee80211_vif *vif) 793e705c121SKalle Valo { 794e705c121SKalle Valo struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 795e705c121SKalle Valo struct iwl_mvm_int_sta *bsta = &mvmvif->bcast_sta; 796e705c121SKalle Valo int ret; 797e705c121SKalle Valo 798e705c121SKalle Valo lockdep_assert_held(&mvm->mutex); 799e705c121SKalle Valo 800e705c121SKalle Valo ret = iwl_mvm_alloc_bcast_sta(mvm, vif); 801e705c121SKalle Valo if (ret) 802e705c121SKalle Valo return ret; 803e705c121SKalle Valo 804e705c121SKalle Valo ret = iwl_mvm_send_add_bcast_sta(mvm, vif); 805e705c121SKalle Valo 806e705c121SKalle Valo if (ret) 807e705c121SKalle Valo iwl_mvm_dealloc_int_sta(mvm, bsta); 808e705c121SKalle Valo 809e705c121SKalle Valo return ret; 810e705c121SKalle Valo } 811e705c121SKalle Valo 812e705c121SKalle Valo void iwl_mvm_dealloc_bcast_sta(struct iwl_mvm *mvm, struct ieee80211_vif *vif) 813e705c121SKalle Valo { 814e705c121SKalle Valo struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 815e705c121SKalle Valo 816e705c121SKalle Valo iwl_mvm_dealloc_int_sta(mvm, &mvmvif->bcast_sta); 817e705c121SKalle Valo } 818e705c121SKalle Valo 819e705c121SKalle Valo /* 820e705c121SKalle Valo * Send the FW a request to remove the station from it's internal data 821e705c121SKalle Valo * structures, and in addition remove it from the local data structure. 822e705c121SKalle Valo */ 823e705c121SKalle Valo int iwl_mvm_rm_bcast_sta(struct iwl_mvm *mvm, struct ieee80211_vif *vif) 824e705c121SKalle Valo { 825e705c121SKalle Valo int ret; 826e705c121SKalle Valo 827e705c121SKalle Valo lockdep_assert_held(&mvm->mutex); 828e705c121SKalle Valo 829e705c121SKalle Valo ret = iwl_mvm_send_rm_bcast_sta(mvm, vif); 830e705c121SKalle Valo 831e705c121SKalle Valo iwl_mvm_dealloc_bcast_sta(mvm, vif); 832e705c121SKalle Valo 833e705c121SKalle Valo return ret; 834e705c121SKalle Valo } 835e705c121SKalle Valo 836e705c121SKalle Valo #define IWL_MAX_RX_BA_SESSIONS 16 837e705c121SKalle Valo 838e705c121SKalle Valo int iwl_mvm_sta_rx_agg(struct iwl_mvm *mvm, struct ieee80211_sta *sta, 839854c5705SSara Sharon int tid, u16 ssn, bool start, u8 buf_size) 840e705c121SKalle Valo { 841e705c121SKalle Valo struct iwl_mvm_sta *mvm_sta = iwl_mvm_sta_from_mac80211(sta); 842e705c121SKalle Valo struct iwl_mvm_add_sta_cmd cmd = {}; 843e705c121SKalle Valo int ret; 844e705c121SKalle Valo u32 status; 845e705c121SKalle Valo 846e705c121SKalle Valo lockdep_assert_held(&mvm->mutex); 847e705c121SKalle Valo 848e705c121SKalle Valo if (start && mvm->rx_ba_sessions >= IWL_MAX_RX_BA_SESSIONS) { 849e705c121SKalle Valo IWL_WARN(mvm, "Not enough RX BA SESSIONS\n"); 850e705c121SKalle Valo return -ENOSPC; 851e705c121SKalle Valo } 852e705c121SKalle Valo 853e705c121SKalle Valo cmd.mac_id_n_color = cpu_to_le32(mvm_sta->mac_id_n_color); 854e705c121SKalle Valo cmd.sta_id = mvm_sta->sta_id; 855e705c121SKalle Valo cmd.add_modify = STA_MODE_MODIFY; 856e705c121SKalle Valo if (start) { 857e705c121SKalle Valo cmd.add_immediate_ba_tid = (u8) tid; 858e705c121SKalle Valo cmd.add_immediate_ba_ssn = cpu_to_le16(ssn); 859854c5705SSara Sharon cmd.rx_ba_window = cpu_to_le16((u16)buf_size); 860e705c121SKalle Valo } else { 861e705c121SKalle Valo cmd.remove_immediate_ba_tid = (u8) tid; 862e705c121SKalle Valo } 863e705c121SKalle Valo cmd.modify_mask = start ? STA_MODIFY_ADD_BA_TID : 864e705c121SKalle Valo STA_MODIFY_REMOVE_BA_TID; 865e705c121SKalle Valo 866e705c121SKalle Valo status = ADD_STA_SUCCESS; 867854c5705SSara Sharon ret = iwl_mvm_send_cmd_pdu_status(mvm, ADD_STA, 868854c5705SSara Sharon iwl_mvm_add_sta_cmd_size(mvm), 869e705c121SKalle Valo &cmd, &status); 870e705c121SKalle Valo if (ret) 871e705c121SKalle Valo return ret; 872e705c121SKalle Valo 873837c4da9SSara Sharon switch (status & IWL_ADD_STA_STATUS_MASK) { 874e705c121SKalle Valo case ADD_STA_SUCCESS: 875e705c121SKalle Valo IWL_DEBUG_INFO(mvm, "RX BA Session %sed in fw\n", 876e705c121SKalle Valo start ? "start" : "stopp"); 877e705c121SKalle Valo break; 878e705c121SKalle Valo case ADD_STA_IMMEDIATE_BA_FAILURE: 879e705c121SKalle Valo IWL_WARN(mvm, "RX BA Session refused by fw\n"); 880e705c121SKalle Valo ret = -ENOSPC; 881e705c121SKalle Valo break; 882e705c121SKalle Valo default: 883e705c121SKalle Valo ret = -EIO; 884e705c121SKalle Valo IWL_ERR(mvm, "RX BA Session failed %sing, status 0x%x\n", 885e705c121SKalle Valo start ? "start" : "stopp", status); 886e705c121SKalle Valo break; 887e705c121SKalle Valo } 888e705c121SKalle Valo 889e705c121SKalle Valo if (!ret) { 890e705c121SKalle Valo if (start) 891e705c121SKalle Valo mvm->rx_ba_sessions++; 892e705c121SKalle Valo else if (mvm->rx_ba_sessions > 0) 893e705c121SKalle Valo /* check that restart flow didn't zero the counter */ 894e705c121SKalle Valo mvm->rx_ba_sessions--; 895e705c121SKalle Valo } 896e705c121SKalle Valo 897e705c121SKalle Valo return ret; 898e705c121SKalle Valo } 899e705c121SKalle Valo 900e705c121SKalle Valo static int iwl_mvm_sta_tx_agg(struct iwl_mvm *mvm, struct ieee80211_sta *sta, 901e705c121SKalle Valo int tid, u8 queue, bool start) 902e705c121SKalle Valo { 903e705c121SKalle Valo struct iwl_mvm_sta *mvm_sta = iwl_mvm_sta_from_mac80211(sta); 904e705c121SKalle Valo struct iwl_mvm_add_sta_cmd cmd = {}; 905e705c121SKalle Valo int ret; 906e705c121SKalle Valo u32 status; 907e705c121SKalle Valo 908e705c121SKalle Valo lockdep_assert_held(&mvm->mutex); 909e705c121SKalle Valo 910e705c121SKalle Valo if (start) { 911e705c121SKalle Valo mvm_sta->tfd_queue_msk |= BIT(queue); 912e705c121SKalle Valo mvm_sta->tid_disable_agg &= ~BIT(tid); 913e705c121SKalle Valo } else { 914e705c121SKalle Valo mvm_sta->tfd_queue_msk &= ~BIT(queue); 915e705c121SKalle Valo mvm_sta->tid_disable_agg |= BIT(tid); 916e705c121SKalle Valo } 917e705c121SKalle Valo 918e705c121SKalle Valo cmd.mac_id_n_color = cpu_to_le32(mvm_sta->mac_id_n_color); 919e705c121SKalle Valo cmd.sta_id = mvm_sta->sta_id; 920e705c121SKalle Valo cmd.add_modify = STA_MODE_MODIFY; 921e705c121SKalle Valo cmd.modify_mask = STA_MODIFY_QUEUES | STA_MODIFY_TID_DISABLE_TX; 922e705c121SKalle Valo cmd.tfd_queue_msk = cpu_to_le32(mvm_sta->tfd_queue_msk); 923e705c121SKalle Valo cmd.tid_disable_tx = cpu_to_le16(mvm_sta->tid_disable_agg); 924e705c121SKalle Valo 925e705c121SKalle Valo status = ADD_STA_SUCCESS; 926854c5705SSara Sharon ret = iwl_mvm_send_cmd_pdu_status(mvm, ADD_STA, 927854c5705SSara Sharon iwl_mvm_add_sta_cmd_size(mvm), 928e705c121SKalle Valo &cmd, &status); 929e705c121SKalle Valo if (ret) 930e705c121SKalle Valo return ret; 931e705c121SKalle Valo 932837c4da9SSara Sharon switch (status & IWL_ADD_STA_STATUS_MASK) { 933e705c121SKalle Valo case ADD_STA_SUCCESS: 934e705c121SKalle Valo break; 935e705c121SKalle Valo default: 936e705c121SKalle Valo ret = -EIO; 937e705c121SKalle Valo IWL_ERR(mvm, "TX BA Session failed %sing, status 0x%x\n", 938e705c121SKalle Valo start ? "start" : "stopp", status); 939e705c121SKalle Valo break; 940e705c121SKalle Valo } 941e705c121SKalle Valo 942e705c121SKalle Valo return ret; 943e705c121SKalle Valo } 944e705c121SKalle Valo 945e705c121SKalle Valo const u8 tid_to_mac80211_ac[] = { 946e705c121SKalle Valo IEEE80211_AC_BE, 947e705c121SKalle Valo IEEE80211_AC_BK, 948e705c121SKalle Valo IEEE80211_AC_BK, 949e705c121SKalle Valo IEEE80211_AC_BE, 950e705c121SKalle Valo IEEE80211_AC_VI, 951e705c121SKalle Valo IEEE80211_AC_VI, 952e705c121SKalle Valo IEEE80211_AC_VO, 953e705c121SKalle Valo IEEE80211_AC_VO, 954e705c121SKalle Valo }; 955e705c121SKalle Valo 956e705c121SKalle Valo static const u8 tid_to_ucode_ac[] = { 957e705c121SKalle Valo AC_BE, 958e705c121SKalle Valo AC_BK, 959e705c121SKalle Valo AC_BK, 960e705c121SKalle Valo AC_BE, 961e705c121SKalle Valo AC_VI, 962e705c121SKalle Valo AC_VI, 963e705c121SKalle Valo AC_VO, 964e705c121SKalle Valo AC_VO, 965e705c121SKalle Valo }; 966e705c121SKalle Valo 967e705c121SKalle Valo int iwl_mvm_sta_tx_agg_start(struct iwl_mvm *mvm, struct ieee80211_vif *vif, 968e705c121SKalle Valo struct ieee80211_sta *sta, u16 tid, u16 *ssn) 969e705c121SKalle Valo { 970e705c121SKalle Valo struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta); 971e705c121SKalle Valo struct iwl_mvm_tid_data *tid_data; 972e705c121SKalle Valo int txq_id; 973e705c121SKalle Valo int ret; 974e705c121SKalle Valo 975e705c121SKalle Valo if (WARN_ON_ONCE(tid >= IWL_MAX_TID_COUNT)) 976e705c121SKalle Valo return -EINVAL; 977e705c121SKalle Valo 978e705c121SKalle Valo if (mvmsta->tid_data[tid].state != IWL_AGG_OFF) { 979e705c121SKalle Valo IWL_ERR(mvm, "Start AGG when state is not IWL_AGG_OFF %d!\n", 980e705c121SKalle Valo mvmsta->tid_data[tid].state); 981e705c121SKalle Valo return -ENXIO; 982e705c121SKalle Valo } 983e705c121SKalle Valo 984e705c121SKalle Valo lockdep_assert_held(&mvm->mutex); 985e705c121SKalle Valo 986e705c121SKalle Valo spin_lock_bh(&mvmsta->lock); 987e705c121SKalle Valo 988e705c121SKalle Valo /* possible race condition - we entered D0i3 while starting agg */ 989e705c121SKalle Valo if (test_bit(IWL_MVM_STATUS_IN_D0I3, &mvm->status)) { 990e705c121SKalle Valo spin_unlock_bh(&mvmsta->lock); 991e705c121SKalle Valo IWL_ERR(mvm, "Entered D0i3 while starting Tx agg\n"); 992e705c121SKalle Valo return -EIO; 993e705c121SKalle Valo } 994e705c121SKalle Valo 995e705c121SKalle Valo spin_lock_bh(&mvm->queue_info_lock); 996e705c121SKalle Valo 997e705c121SKalle Valo txq_id = iwl_mvm_find_free_queue(mvm, mvm->first_agg_queue, 998e705c121SKalle Valo mvm->last_agg_queue); 999e705c121SKalle Valo if (txq_id < 0) { 1000e705c121SKalle Valo ret = txq_id; 1001e705c121SKalle Valo spin_unlock_bh(&mvm->queue_info_lock); 1002e705c121SKalle Valo IWL_ERR(mvm, "Failed to allocate agg queue\n"); 1003e705c121SKalle Valo goto release_locks; 1004e705c121SKalle Valo } 1005e705c121SKalle Valo mvm->queue_info[txq_id].setup_reserved = true; 1006e705c121SKalle Valo spin_unlock_bh(&mvm->queue_info_lock); 1007e705c121SKalle Valo 1008e705c121SKalle Valo tid_data = &mvmsta->tid_data[tid]; 1009e705c121SKalle Valo tid_data->ssn = IEEE80211_SEQ_TO_SN(tid_data->seq_number); 1010e705c121SKalle Valo tid_data->txq_id = txq_id; 1011e705c121SKalle Valo *ssn = tid_data->ssn; 1012e705c121SKalle Valo 1013e705c121SKalle Valo IWL_DEBUG_TX_QUEUES(mvm, 1014e705c121SKalle Valo "Start AGG: sta %d tid %d queue %d - ssn = %d, next_recl = %d\n", 1015e705c121SKalle Valo mvmsta->sta_id, tid, txq_id, tid_data->ssn, 1016e705c121SKalle Valo tid_data->next_reclaimed); 1017e705c121SKalle Valo 1018e705c121SKalle Valo if (tid_data->ssn == tid_data->next_reclaimed) { 1019e705c121SKalle Valo tid_data->state = IWL_AGG_STARTING; 1020e705c121SKalle Valo ieee80211_start_tx_ba_cb_irqsafe(vif, sta->addr, tid); 1021e705c121SKalle Valo } else { 1022e705c121SKalle Valo tid_data->state = IWL_EMPTYING_HW_QUEUE_ADDBA; 1023e705c121SKalle Valo } 1024e705c121SKalle Valo 1025e705c121SKalle Valo ret = 0; 1026e705c121SKalle Valo 1027e705c121SKalle Valo release_locks: 1028e705c121SKalle Valo spin_unlock_bh(&mvmsta->lock); 1029e705c121SKalle Valo 1030e705c121SKalle Valo return ret; 1031e705c121SKalle Valo } 1032e705c121SKalle Valo 1033e705c121SKalle Valo int iwl_mvm_sta_tx_agg_oper(struct iwl_mvm *mvm, struct ieee80211_vif *vif, 1034bb81bb68SEmmanuel Grumbach struct ieee80211_sta *sta, u16 tid, u8 buf_size, 1035bb81bb68SEmmanuel Grumbach bool amsdu) 1036e705c121SKalle Valo { 1037e705c121SKalle Valo struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta); 1038e705c121SKalle Valo struct iwl_mvm_tid_data *tid_data = &mvmsta->tid_data[tid]; 1039e705c121SKalle Valo unsigned int wdg_timeout = 1040e705c121SKalle Valo iwl_mvm_get_wd_timeout(mvm, vif, sta->tdls, false); 1041e705c121SKalle Valo int queue, fifo, ret; 1042e705c121SKalle Valo u16 ssn; 1043e705c121SKalle Valo 1044e705c121SKalle Valo BUILD_BUG_ON((sizeof(mvmsta->agg_tids) * BITS_PER_BYTE) 1045e705c121SKalle Valo != IWL_MAX_TID_COUNT); 1046e705c121SKalle Valo 1047e705c121SKalle Valo buf_size = min_t(int, buf_size, LINK_QUAL_AGG_FRAME_LIMIT_DEF); 1048e705c121SKalle Valo 1049e705c121SKalle Valo spin_lock_bh(&mvmsta->lock); 1050e705c121SKalle Valo ssn = tid_data->ssn; 1051e705c121SKalle Valo queue = tid_data->txq_id; 1052e705c121SKalle Valo tid_data->state = IWL_AGG_ON; 1053e705c121SKalle Valo mvmsta->agg_tids |= BIT(tid); 1054e705c121SKalle Valo tid_data->ssn = 0xffff; 1055bb81bb68SEmmanuel Grumbach tid_data->amsdu_in_ampdu_allowed = amsdu; 1056e705c121SKalle Valo spin_unlock_bh(&mvmsta->lock); 1057e705c121SKalle Valo 1058e705c121SKalle Valo fifo = iwl_mvm_ac_to_tx_fifo[tid_to_mac80211_ac[tid]]; 1059e705c121SKalle Valo 1060e705c121SKalle Valo iwl_mvm_enable_agg_txq(mvm, queue, 1061e705c121SKalle Valo vif->hw_queue[tid_to_mac80211_ac[tid]], fifo, 1062e705c121SKalle Valo mvmsta->sta_id, tid, buf_size, ssn, wdg_timeout); 1063e705c121SKalle Valo 1064e705c121SKalle Valo ret = iwl_mvm_sta_tx_agg(mvm, sta, tid, queue, true); 1065e705c121SKalle Valo if (ret) 1066e705c121SKalle Valo return -EIO; 1067e705c121SKalle Valo 1068e705c121SKalle Valo /* No need to mark as reserved */ 1069e705c121SKalle Valo spin_lock_bh(&mvm->queue_info_lock); 1070e705c121SKalle Valo mvm->queue_info[queue].setup_reserved = false; 1071e705c121SKalle Valo spin_unlock_bh(&mvm->queue_info_lock); 1072e705c121SKalle Valo 1073e705c121SKalle Valo /* 1074e705c121SKalle Valo * Even though in theory the peer could have different 1075e705c121SKalle Valo * aggregation reorder buffer sizes for different sessions, 1076e705c121SKalle Valo * our ucode doesn't allow for that and has a global limit 1077e705c121SKalle Valo * for each station. Therefore, use the minimum of all the 1078e705c121SKalle Valo * aggregation sessions and our default value. 1079e705c121SKalle Valo */ 1080e705c121SKalle Valo mvmsta->max_agg_bufsize = 1081e705c121SKalle Valo min(mvmsta->max_agg_bufsize, buf_size); 1082e705c121SKalle Valo mvmsta->lq_sta.lq.agg_frame_cnt_limit = mvmsta->max_agg_bufsize; 1083e705c121SKalle Valo 1084e705c121SKalle Valo IWL_DEBUG_HT(mvm, "Tx aggregation enabled on ra = %pM tid = %d\n", 1085e705c121SKalle Valo sta->addr, tid); 1086e705c121SKalle Valo 1087e705c121SKalle Valo return iwl_mvm_send_lq_cmd(mvm, &mvmsta->lq_sta.lq, false); 1088e705c121SKalle Valo } 1089e705c121SKalle Valo 1090e705c121SKalle Valo int iwl_mvm_sta_tx_agg_stop(struct iwl_mvm *mvm, struct ieee80211_vif *vif, 1091e705c121SKalle Valo struct ieee80211_sta *sta, u16 tid) 1092e705c121SKalle Valo { 1093e705c121SKalle Valo struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta); 1094e705c121SKalle Valo struct iwl_mvm_tid_data *tid_data = &mvmsta->tid_data[tid]; 1095e705c121SKalle Valo u16 txq_id; 1096e705c121SKalle Valo int err; 1097e705c121SKalle Valo 1098e705c121SKalle Valo 1099e705c121SKalle Valo /* 1100e705c121SKalle Valo * If mac80211 is cleaning its state, then say that we finished since 1101e705c121SKalle Valo * our state has been cleared anyway. 1102e705c121SKalle Valo */ 1103e705c121SKalle Valo if (test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status)) { 1104e705c121SKalle Valo ieee80211_stop_tx_ba_cb_irqsafe(vif, sta->addr, tid); 1105e705c121SKalle Valo return 0; 1106e705c121SKalle Valo } 1107e705c121SKalle Valo 1108e705c121SKalle Valo spin_lock_bh(&mvmsta->lock); 1109e705c121SKalle Valo 1110e705c121SKalle Valo txq_id = tid_data->txq_id; 1111e705c121SKalle Valo 1112e705c121SKalle Valo IWL_DEBUG_TX_QUEUES(mvm, "Stop AGG: sta %d tid %d q %d state %d\n", 1113e705c121SKalle Valo mvmsta->sta_id, tid, txq_id, tid_data->state); 1114e705c121SKalle Valo 1115e705c121SKalle Valo mvmsta->agg_tids &= ~BIT(tid); 1116e705c121SKalle Valo 1117e705c121SKalle Valo /* No need to mark as reserved anymore */ 1118e705c121SKalle Valo spin_lock_bh(&mvm->queue_info_lock); 1119e705c121SKalle Valo mvm->queue_info[txq_id].setup_reserved = false; 1120e705c121SKalle Valo spin_unlock_bh(&mvm->queue_info_lock); 1121e705c121SKalle Valo 1122e705c121SKalle Valo switch (tid_data->state) { 1123e705c121SKalle Valo case IWL_AGG_ON: 1124e705c121SKalle Valo tid_data->ssn = IEEE80211_SEQ_TO_SN(tid_data->seq_number); 1125e705c121SKalle Valo 1126e705c121SKalle Valo IWL_DEBUG_TX_QUEUES(mvm, 1127e705c121SKalle Valo "ssn = %d, next_recl = %d\n", 1128e705c121SKalle Valo tid_data->ssn, tid_data->next_reclaimed); 1129e705c121SKalle Valo 1130e705c121SKalle Valo /* There are still packets for this RA / TID in the HW */ 1131e705c121SKalle Valo if (tid_data->ssn != tid_data->next_reclaimed) { 1132e705c121SKalle Valo tid_data->state = IWL_EMPTYING_HW_QUEUE_DELBA; 1133e705c121SKalle Valo err = 0; 1134e705c121SKalle Valo break; 1135e705c121SKalle Valo } 1136e705c121SKalle Valo 1137e705c121SKalle Valo tid_data->ssn = 0xffff; 1138e705c121SKalle Valo tid_data->state = IWL_AGG_OFF; 1139e705c121SKalle Valo spin_unlock_bh(&mvmsta->lock); 1140e705c121SKalle Valo 1141e705c121SKalle Valo ieee80211_stop_tx_ba_cb_irqsafe(vif, sta->addr, tid); 1142e705c121SKalle Valo 1143e705c121SKalle Valo iwl_mvm_sta_tx_agg(mvm, sta, tid, txq_id, false); 1144e705c121SKalle Valo 1145e705c121SKalle Valo iwl_mvm_disable_txq(mvm, txq_id, 1146e705c121SKalle Valo vif->hw_queue[tid_to_mac80211_ac[tid]], tid, 1147e705c121SKalle Valo 0); 1148e705c121SKalle Valo return 0; 1149e705c121SKalle Valo case IWL_AGG_STARTING: 1150e705c121SKalle Valo case IWL_EMPTYING_HW_QUEUE_ADDBA: 1151e705c121SKalle Valo /* 1152e705c121SKalle Valo * The agg session has been stopped before it was set up. This 1153e705c121SKalle Valo * can happen when the AddBA timer times out for example. 1154e705c121SKalle Valo */ 1155e705c121SKalle Valo 1156e705c121SKalle Valo /* No barriers since we are under mutex */ 1157e705c121SKalle Valo lockdep_assert_held(&mvm->mutex); 1158e705c121SKalle Valo 1159e705c121SKalle Valo ieee80211_stop_tx_ba_cb_irqsafe(vif, sta->addr, tid); 1160e705c121SKalle Valo tid_data->state = IWL_AGG_OFF; 1161e705c121SKalle Valo err = 0; 1162e705c121SKalle Valo break; 1163e705c121SKalle Valo default: 1164e705c121SKalle Valo IWL_ERR(mvm, 1165e705c121SKalle Valo "Stopping AGG while state not ON or starting for %d on %d (%d)\n", 1166e705c121SKalle Valo mvmsta->sta_id, tid, tid_data->state); 1167e705c121SKalle Valo IWL_ERR(mvm, 1168e705c121SKalle Valo "\ttid_data->txq_id = %d\n", tid_data->txq_id); 1169e705c121SKalle Valo err = -EINVAL; 1170e705c121SKalle Valo } 1171e705c121SKalle Valo 1172e705c121SKalle Valo spin_unlock_bh(&mvmsta->lock); 1173e705c121SKalle Valo 1174e705c121SKalle Valo return err; 1175e705c121SKalle Valo } 1176e705c121SKalle Valo 1177e705c121SKalle Valo int iwl_mvm_sta_tx_agg_flush(struct iwl_mvm *mvm, struct ieee80211_vif *vif, 1178e705c121SKalle Valo struct ieee80211_sta *sta, u16 tid) 1179e705c121SKalle Valo { 1180e705c121SKalle Valo struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta); 1181e705c121SKalle Valo struct iwl_mvm_tid_data *tid_data = &mvmsta->tid_data[tid]; 1182e705c121SKalle Valo u16 txq_id; 1183e705c121SKalle Valo enum iwl_mvm_agg_state old_state; 1184e705c121SKalle Valo 1185e705c121SKalle Valo /* 1186e705c121SKalle Valo * First set the agg state to OFF to avoid calling 1187e705c121SKalle Valo * ieee80211_stop_tx_ba_cb in iwl_mvm_check_ratid_empty. 1188e705c121SKalle Valo */ 1189e705c121SKalle Valo spin_lock_bh(&mvmsta->lock); 1190e705c121SKalle Valo txq_id = tid_data->txq_id; 1191e705c121SKalle Valo IWL_DEBUG_TX_QUEUES(mvm, "Flush AGG: sta %d tid %d q %d state %d\n", 1192e705c121SKalle Valo mvmsta->sta_id, tid, txq_id, tid_data->state); 1193e705c121SKalle Valo old_state = tid_data->state; 1194e705c121SKalle Valo tid_data->state = IWL_AGG_OFF; 1195e705c121SKalle Valo mvmsta->agg_tids &= ~BIT(tid); 1196e705c121SKalle Valo spin_unlock_bh(&mvmsta->lock); 1197e705c121SKalle Valo 1198e705c121SKalle Valo /* No need to mark as reserved */ 1199e705c121SKalle Valo spin_lock_bh(&mvm->queue_info_lock); 1200e705c121SKalle Valo mvm->queue_info[txq_id].setup_reserved = false; 1201e705c121SKalle Valo spin_unlock_bh(&mvm->queue_info_lock); 1202e705c121SKalle Valo 1203e705c121SKalle Valo if (old_state >= IWL_AGG_ON) { 1204e705c121SKalle Valo iwl_mvm_drain_sta(mvm, mvmsta, true); 1205e705c121SKalle Valo if (iwl_mvm_flush_tx_path(mvm, BIT(txq_id), 0)) 1206e705c121SKalle Valo IWL_ERR(mvm, "Couldn't flush the AGG queue\n"); 1207e705c121SKalle Valo iwl_trans_wait_tx_queue_empty(mvm->trans, 1208e705c121SKalle Valo mvmsta->tfd_queue_msk); 1209e705c121SKalle Valo iwl_mvm_drain_sta(mvm, mvmsta, false); 1210e705c121SKalle Valo 1211e705c121SKalle Valo iwl_mvm_sta_tx_agg(mvm, sta, tid, txq_id, false); 1212e705c121SKalle Valo 1213e705c121SKalle Valo iwl_mvm_disable_txq(mvm, tid_data->txq_id, 1214e705c121SKalle Valo vif->hw_queue[tid_to_mac80211_ac[tid]], tid, 1215e705c121SKalle Valo 0); 1216e705c121SKalle Valo } 1217e705c121SKalle Valo 1218e705c121SKalle Valo return 0; 1219e705c121SKalle Valo } 1220e705c121SKalle Valo 1221e705c121SKalle Valo static int iwl_mvm_set_fw_key_idx(struct iwl_mvm *mvm) 1222e705c121SKalle Valo { 1223e705c121SKalle Valo int i, max = -1, max_offs = -1; 1224e705c121SKalle Valo 1225e705c121SKalle Valo lockdep_assert_held(&mvm->mutex); 1226e705c121SKalle Valo 1227e705c121SKalle Valo /* Pick the unused key offset with the highest 'deleted' 1228e705c121SKalle Valo * counter. Every time a key is deleted, all the counters 1229e705c121SKalle Valo * are incremented and the one that was just deleted is 1230e705c121SKalle Valo * reset to zero. Thus, the highest counter is the one 1231e705c121SKalle Valo * that was deleted longest ago. Pick that one. 1232e705c121SKalle Valo */ 1233e705c121SKalle Valo for (i = 0; i < STA_KEY_MAX_NUM; i++) { 1234e705c121SKalle Valo if (test_bit(i, mvm->fw_key_table)) 1235e705c121SKalle Valo continue; 1236e705c121SKalle Valo if (mvm->fw_key_deleted[i] > max) { 1237e705c121SKalle Valo max = mvm->fw_key_deleted[i]; 1238e705c121SKalle Valo max_offs = i; 1239e705c121SKalle Valo } 1240e705c121SKalle Valo } 1241e705c121SKalle Valo 1242e705c121SKalle Valo if (max_offs < 0) 1243e705c121SKalle Valo return STA_KEY_IDX_INVALID; 1244e705c121SKalle Valo 1245e705c121SKalle Valo return max_offs; 1246e705c121SKalle Valo } 1247e705c121SKalle Valo 12485f7a1847SJohannes Berg static struct iwl_mvm_sta *iwl_mvm_get_key_sta(struct iwl_mvm *mvm, 12494615fd15SEmmanuel Grumbach struct ieee80211_vif *vif, 1250e705c121SKalle Valo struct ieee80211_sta *sta) 1251e705c121SKalle Valo { 1252e705c121SKalle Valo struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 1253e705c121SKalle Valo 12545f7a1847SJohannes Berg if (sta) 12555f7a1847SJohannes Berg return iwl_mvm_sta_from_mac80211(sta); 1256e705c121SKalle Valo 1257e705c121SKalle Valo /* 1258e705c121SKalle Valo * The device expects GTKs for station interfaces to be 1259e705c121SKalle Valo * installed as GTKs for the AP station. If we have no 1260e705c121SKalle Valo * station ID, then use AP's station ID. 1261e705c121SKalle Valo */ 1262e705c121SKalle Valo if (vif->type == NL80211_IFTYPE_STATION && 12634615fd15SEmmanuel Grumbach mvmvif->ap_sta_id != IWL_MVM_STATION_COUNT) { 12644615fd15SEmmanuel Grumbach u8 sta_id = mvmvif->ap_sta_id; 12654615fd15SEmmanuel Grumbach 126612f17211SEmmanuel Grumbach sta = rcu_dereference_check(mvm->fw_id_to_mac_id[sta_id], 12674615fd15SEmmanuel Grumbach lockdep_is_held(&mvm->mutex)); 12684615fd15SEmmanuel Grumbach /* 12694615fd15SEmmanuel Grumbach * It is possible that the 'sta' parameter is NULL, 12704615fd15SEmmanuel Grumbach * for example when a GTK is removed - the sta_id will then 12714615fd15SEmmanuel Grumbach * be the AP ID, and no station was passed by mac80211. 12724615fd15SEmmanuel Grumbach */ 12734615fd15SEmmanuel Grumbach if (IS_ERR_OR_NULL(sta)) 12745f7a1847SJohannes Berg return NULL; 12754615fd15SEmmanuel Grumbach 12765f7a1847SJohannes Berg return iwl_mvm_sta_from_mac80211(sta); 12774615fd15SEmmanuel Grumbach } 1278e705c121SKalle Valo 12795f7a1847SJohannes Berg return NULL; 1280e705c121SKalle Valo } 1281e705c121SKalle Valo 1282e705c121SKalle Valo static int iwl_mvm_send_sta_key(struct iwl_mvm *mvm, 1283e705c121SKalle Valo struct iwl_mvm_sta *mvm_sta, 1284e705c121SKalle Valo struct ieee80211_key_conf *keyconf, bool mcast, 12854615fd15SEmmanuel Grumbach u32 tkip_iv32, u16 *tkip_p1k, u32 cmd_flags, 12864615fd15SEmmanuel Grumbach u8 key_offset) 1287e705c121SKalle Valo { 1288e705c121SKalle Valo struct iwl_mvm_add_sta_key_cmd cmd = {}; 1289e705c121SKalle Valo __le16 key_flags; 1290e705c121SKalle Valo int ret; 1291e705c121SKalle Valo u32 status; 1292e705c121SKalle Valo u16 keyidx; 1293e705c121SKalle Valo int i; 1294e705c121SKalle Valo u8 sta_id = mvm_sta->sta_id; 1295e705c121SKalle Valo 1296e705c121SKalle Valo keyidx = (keyconf->keyidx << STA_KEY_FLG_KEYID_POS) & 1297e705c121SKalle Valo STA_KEY_FLG_KEYID_MSK; 1298e705c121SKalle Valo key_flags = cpu_to_le16(keyidx); 1299e705c121SKalle Valo key_flags |= cpu_to_le16(STA_KEY_FLG_WEP_KEY_MAP); 1300e705c121SKalle Valo 1301e705c121SKalle Valo switch (keyconf->cipher) { 1302e705c121SKalle Valo case WLAN_CIPHER_SUITE_TKIP: 1303e705c121SKalle Valo key_flags |= cpu_to_le16(STA_KEY_FLG_TKIP); 1304e705c121SKalle Valo cmd.tkip_rx_tsc_byte2 = tkip_iv32; 1305e705c121SKalle Valo for (i = 0; i < 5; i++) 1306e705c121SKalle Valo cmd.tkip_rx_ttak[i] = cpu_to_le16(tkip_p1k[i]); 1307e705c121SKalle Valo memcpy(cmd.key, keyconf->key, keyconf->keylen); 1308e705c121SKalle Valo break; 1309e705c121SKalle Valo case WLAN_CIPHER_SUITE_CCMP: 1310e705c121SKalle Valo key_flags |= cpu_to_le16(STA_KEY_FLG_CCM); 1311e705c121SKalle Valo memcpy(cmd.key, keyconf->key, keyconf->keylen); 1312e705c121SKalle Valo break; 1313e705c121SKalle Valo case WLAN_CIPHER_SUITE_WEP104: 1314e705c121SKalle Valo key_flags |= cpu_to_le16(STA_KEY_FLG_WEP_13BYTES); 1315e705c121SKalle Valo /* fall through */ 1316e705c121SKalle Valo case WLAN_CIPHER_SUITE_WEP40: 1317e705c121SKalle Valo key_flags |= cpu_to_le16(STA_KEY_FLG_WEP); 1318e705c121SKalle Valo memcpy(cmd.key + 3, keyconf->key, keyconf->keylen); 1319e705c121SKalle Valo break; 1320e705c121SKalle Valo default: 1321e705c121SKalle Valo key_flags |= cpu_to_le16(STA_KEY_FLG_EXT); 1322e705c121SKalle Valo memcpy(cmd.key, keyconf->key, keyconf->keylen); 1323e705c121SKalle Valo } 1324e705c121SKalle Valo 1325e705c121SKalle Valo if (mcast) 1326e705c121SKalle Valo key_flags |= cpu_to_le16(STA_KEY_MULTICAST); 1327e705c121SKalle Valo 13284615fd15SEmmanuel Grumbach cmd.key_offset = key_offset; 1329e705c121SKalle Valo cmd.key_flags = key_flags; 1330e705c121SKalle Valo cmd.sta_id = sta_id; 1331e705c121SKalle Valo 1332e705c121SKalle Valo status = ADD_STA_SUCCESS; 1333e705c121SKalle Valo if (cmd_flags & CMD_ASYNC) 1334e705c121SKalle Valo ret = iwl_mvm_send_cmd_pdu(mvm, ADD_STA_KEY, CMD_ASYNC, 1335e705c121SKalle Valo sizeof(cmd), &cmd); 1336e705c121SKalle Valo else 1337e705c121SKalle Valo ret = iwl_mvm_send_cmd_pdu_status(mvm, ADD_STA_KEY, sizeof(cmd), 1338e705c121SKalle Valo &cmd, &status); 1339e705c121SKalle Valo 1340e705c121SKalle Valo switch (status) { 1341e705c121SKalle Valo case ADD_STA_SUCCESS: 1342e705c121SKalle Valo IWL_DEBUG_WEP(mvm, "MODIFY_STA: set dynamic key passed\n"); 1343e705c121SKalle Valo break; 1344e705c121SKalle Valo default: 1345e705c121SKalle Valo ret = -EIO; 1346e705c121SKalle Valo IWL_ERR(mvm, "MODIFY_STA: set dynamic key failed\n"); 1347e705c121SKalle Valo break; 1348e705c121SKalle Valo } 1349e705c121SKalle Valo 1350e705c121SKalle Valo return ret; 1351e705c121SKalle Valo } 1352e705c121SKalle Valo 1353e705c121SKalle Valo static int iwl_mvm_send_sta_igtk(struct iwl_mvm *mvm, 1354e705c121SKalle Valo struct ieee80211_key_conf *keyconf, 1355e705c121SKalle Valo u8 sta_id, bool remove_key) 1356e705c121SKalle Valo { 1357e705c121SKalle Valo struct iwl_mvm_mgmt_mcast_key_cmd igtk_cmd = {}; 1358e705c121SKalle Valo 1359e705c121SKalle Valo /* verify the key details match the required command's expectations */ 1360e705c121SKalle Valo if (WARN_ON((keyconf->cipher != WLAN_CIPHER_SUITE_AES_CMAC) || 1361e705c121SKalle Valo (keyconf->flags & IEEE80211_KEY_FLAG_PAIRWISE) || 1362e705c121SKalle Valo (keyconf->keyidx != 4 && keyconf->keyidx != 5))) 1363e705c121SKalle Valo return -EINVAL; 1364e705c121SKalle Valo 1365e705c121SKalle Valo igtk_cmd.key_id = cpu_to_le32(keyconf->keyidx); 1366e705c121SKalle Valo igtk_cmd.sta_id = cpu_to_le32(sta_id); 1367e705c121SKalle Valo 1368e705c121SKalle Valo if (remove_key) { 1369e705c121SKalle Valo igtk_cmd.ctrl_flags |= cpu_to_le32(STA_KEY_NOT_VALID); 1370e705c121SKalle Valo } else { 1371e705c121SKalle Valo struct ieee80211_key_seq seq; 1372e705c121SKalle Valo const u8 *pn; 1373e705c121SKalle Valo 1374e705c121SKalle Valo memcpy(igtk_cmd.IGTK, keyconf->key, keyconf->keylen); 1375e705c121SKalle Valo ieee80211_get_key_rx_seq(keyconf, 0, &seq); 1376e705c121SKalle Valo pn = seq.aes_cmac.pn; 1377e705c121SKalle Valo igtk_cmd.receive_seq_cnt = cpu_to_le64(((u64) pn[5] << 0) | 1378e705c121SKalle Valo ((u64) pn[4] << 8) | 1379e705c121SKalle Valo ((u64) pn[3] << 16) | 1380e705c121SKalle Valo ((u64) pn[2] << 24) | 1381e705c121SKalle Valo ((u64) pn[1] << 32) | 1382e705c121SKalle Valo ((u64) pn[0] << 40)); 1383e705c121SKalle Valo } 1384e705c121SKalle Valo 1385e705c121SKalle Valo IWL_DEBUG_INFO(mvm, "%s igtk for sta %u\n", 1386e705c121SKalle Valo remove_key ? "removing" : "installing", 1387e705c121SKalle Valo igtk_cmd.sta_id); 1388e705c121SKalle Valo 1389e705c121SKalle Valo return iwl_mvm_send_cmd_pdu(mvm, MGMT_MCAST_KEY, 0, 1390e705c121SKalle Valo sizeof(igtk_cmd), &igtk_cmd); 1391e705c121SKalle Valo } 1392e705c121SKalle Valo 1393e705c121SKalle Valo 1394e705c121SKalle Valo static inline u8 *iwl_mvm_get_mac_addr(struct iwl_mvm *mvm, 1395e705c121SKalle Valo struct ieee80211_vif *vif, 1396e705c121SKalle Valo struct ieee80211_sta *sta) 1397e705c121SKalle Valo { 1398e705c121SKalle Valo struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 1399e705c121SKalle Valo 1400e705c121SKalle Valo if (sta) 1401e705c121SKalle Valo return sta->addr; 1402e705c121SKalle Valo 1403e705c121SKalle Valo if (vif->type == NL80211_IFTYPE_STATION && 1404e705c121SKalle Valo mvmvif->ap_sta_id != IWL_MVM_STATION_COUNT) { 1405e705c121SKalle Valo u8 sta_id = mvmvif->ap_sta_id; 1406e705c121SKalle Valo sta = rcu_dereference_protected(mvm->fw_id_to_mac_id[sta_id], 1407e705c121SKalle Valo lockdep_is_held(&mvm->mutex)); 1408e705c121SKalle Valo return sta->addr; 1409e705c121SKalle Valo } 1410e705c121SKalle Valo 1411e705c121SKalle Valo 1412e705c121SKalle Valo return NULL; 1413e705c121SKalle Valo } 1414e705c121SKalle Valo 1415e705c121SKalle Valo static int __iwl_mvm_set_sta_key(struct iwl_mvm *mvm, 1416e705c121SKalle Valo struct ieee80211_vif *vif, 1417e705c121SKalle Valo struct ieee80211_sta *sta, 1418e705c121SKalle Valo struct ieee80211_key_conf *keyconf, 14194615fd15SEmmanuel Grumbach u8 key_offset, 1420e705c121SKalle Valo bool mcast) 1421e705c121SKalle Valo { 1422e705c121SKalle Valo struct iwl_mvm_sta *mvm_sta = iwl_mvm_sta_from_mac80211(sta); 1423e705c121SKalle Valo int ret; 1424e705c121SKalle Valo const u8 *addr; 1425e705c121SKalle Valo struct ieee80211_key_seq seq; 1426e705c121SKalle Valo u16 p1k[5]; 1427e705c121SKalle Valo 1428e705c121SKalle Valo switch (keyconf->cipher) { 1429e705c121SKalle Valo case WLAN_CIPHER_SUITE_TKIP: 1430e705c121SKalle Valo addr = iwl_mvm_get_mac_addr(mvm, vif, sta); 1431e705c121SKalle Valo /* get phase 1 key from mac80211 */ 1432e705c121SKalle Valo ieee80211_get_key_rx_seq(keyconf, 0, &seq); 1433e705c121SKalle Valo ieee80211_get_tkip_rx_p1k(keyconf, addr, seq.tkip.iv32, p1k); 1434e705c121SKalle Valo ret = iwl_mvm_send_sta_key(mvm, mvm_sta, keyconf, mcast, 14354615fd15SEmmanuel Grumbach seq.tkip.iv32, p1k, 0, key_offset); 1436e705c121SKalle Valo break; 1437e705c121SKalle Valo case WLAN_CIPHER_SUITE_CCMP: 1438e705c121SKalle Valo case WLAN_CIPHER_SUITE_WEP40: 1439e705c121SKalle Valo case WLAN_CIPHER_SUITE_WEP104: 1440e705c121SKalle Valo ret = iwl_mvm_send_sta_key(mvm, mvm_sta, keyconf, mcast, 14414615fd15SEmmanuel Grumbach 0, NULL, 0, key_offset); 1442e705c121SKalle Valo break; 1443e705c121SKalle Valo default: 1444e705c121SKalle Valo ret = iwl_mvm_send_sta_key(mvm, mvm_sta, keyconf, mcast, 14454615fd15SEmmanuel Grumbach 0, NULL, 0, key_offset); 1446e705c121SKalle Valo } 1447e705c121SKalle Valo 1448e705c121SKalle Valo return ret; 1449e705c121SKalle Valo } 1450e705c121SKalle Valo 1451e705c121SKalle Valo static int __iwl_mvm_remove_sta_key(struct iwl_mvm *mvm, u8 sta_id, 1452e705c121SKalle Valo struct ieee80211_key_conf *keyconf, 1453e705c121SKalle Valo bool mcast) 1454e705c121SKalle Valo { 1455e705c121SKalle Valo struct iwl_mvm_add_sta_key_cmd cmd = {}; 1456e705c121SKalle Valo __le16 key_flags; 1457e705c121SKalle Valo int ret; 1458e705c121SKalle Valo u32 status; 1459e705c121SKalle Valo 1460e705c121SKalle Valo key_flags = cpu_to_le16((keyconf->keyidx << STA_KEY_FLG_KEYID_POS) & 1461e705c121SKalle Valo STA_KEY_FLG_KEYID_MSK); 1462e705c121SKalle Valo key_flags |= cpu_to_le16(STA_KEY_FLG_NO_ENC | STA_KEY_FLG_WEP_KEY_MAP); 1463e705c121SKalle Valo key_flags |= cpu_to_le16(STA_KEY_NOT_VALID); 1464e705c121SKalle Valo 1465e705c121SKalle Valo if (mcast) 1466e705c121SKalle Valo key_flags |= cpu_to_le16(STA_KEY_MULTICAST); 1467e705c121SKalle Valo 1468e705c121SKalle Valo cmd.key_flags = key_flags; 1469e705c121SKalle Valo cmd.key_offset = keyconf->hw_key_idx; 1470e705c121SKalle Valo cmd.sta_id = sta_id; 1471e705c121SKalle Valo 1472e705c121SKalle Valo status = ADD_STA_SUCCESS; 1473e705c121SKalle Valo ret = iwl_mvm_send_cmd_pdu_status(mvm, ADD_STA_KEY, sizeof(cmd), 1474e705c121SKalle Valo &cmd, &status); 1475e705c121SKalle Valo 1476e705c121SKalle Valo switch (status) { 1477e705c121SKalle Valo case ADD_STA_SUCCESS: 1478e705c121SKalle Valo IWL_DEBUG_WEP(mvm, "MODIFY_STA: remove sta key passed\n"); 1479e705c121SKalle Valo break; 1480e705c121SKalle Valo default: 1481e705c121SKalle Valo ret = -EIO; 1482e705c121SKalle Valo IWL_ERR(mvm, "MODIFY_STA: remove sta key failed\n"); 1483e705c121SKalle Valo break; 1484e705c121SKalle Valo } 1485e705c121SKalle Valo 1486e705c121SKalle Valo return ret; 1487e705c121SKalle Valo } 1488e705c121SKalle Valo 1489e705c121SKalle Valo int iwl_mvm_set_sta_key(struct iwl_mvm *mvm, 1490e705c121SKalle Valo struct ieee80211_vif *vif, 1491e705c121SKalle Valo struct ieee80211_sta *sta, 1492e705c121SKalle Valo struct ieee80211_key_conf *keyconf, 14934615fd15SEmmanuel Grumbach u8 key_offset) 1494e705c121SKalle Valo { 1495e705c121SKalle Valo bool mcast = !(keyconf->flags & IEEE80211_KEY_FLAG_PAIRWISE); 14965f7a1847SJohannes Berg struct iwl_mvm_sta *mvm_sta; 1497e705c121SKalle Valo u8 sta_id; 1498e705c121SKalle Valo int ret; 1499e705c121SKalle Valo static const u8 __maybe_unused zero_addr[ETH_ALEN] = {0}; 1500e705c121SKalle Valo 1501e705c121SKalle Valo lockdep_assert_held(&mvm->mutex); 1502e705c121SKalle Valo 1503e705c121SKalle Valo /* Get the station id from the mvm local station table */ 15045f7a1847SJohannes Berg mvm_sta = iwl_mvm_get_key_sta(mvm, vif, sta); 15055f7a1847SJohannes Berg if (!mvm_sta) { 15065f7a1847SJohannes Berg IWL_ERR(mvm, "Failed to find station\n"); 1507e705c121SKalle Valo return -EINVAL; 1508e705c121SKalle Valo } 15095f7a1847SJohannes Berg sta_id = mvm_sta->sta_id; 1510e705c121SKalle Valo 1511e705c121SKalle Valo if (keyconf->cipher == WLAN_CIPHER_SUITE_AES_CMAC) { 1512e705c121SKalle Valo ret = iwl_mvm_send_sta_igtk(mvm, keyconf, sta_id, false); 1513e705c121SKalle Valo goto end; 1514e705c121SKalle Valo } 1515e705c121SKalle Valo 1516e705c121SKalle Valo /* 1517e705c121SKalle Valo * It is possible that the 'sta' parameter is NULL, and thus 1518e705c121SKalle Valo * there is a need to retrieve the sta from the local station table. 1519e705c121SKalle Valo */ 1520e705c121SKalle Valo if (!sta) { 1521e705c121SKalle Valo sta = rcu_dereference_protected(mvm->fw_id_to_mac_id[sta_id], 1522e705c121SKalle Valo lockdep_is_held(&mvm->mutex)); 1523e705c121SKalle Valo if (IS_ERR_OR_NULL(sta)) { 1524e705c121SKalle Valo IWL_ERR(mvm, "Invalid station id\n"); 1525e705c121SKalle Valo return -EINVAL; 1526e705c121SKalle Valo } 1527e705c121SKalle Valo } 1528e705c121SKalle Valo 1529e705c121SKalle Valo if (WARN_ON_ONCE(iwl_mvm_sta_from_mac80211(sta)->vif != vif)) 1530e705c121SKalle Valo return -EINVAL; 1531e705c121SKalle Valo 15324615fd15SEmmanuel Grumbach /* If the key_offset is not pre-assigned, we need to find a 15334615fd15SEmmanuel Grumbach * new offset to use. In normal cases, the offset is not 15344615fd15SEmmanuel Grumbach * pre-assigned, but during HW_RESTART we want to reuse the 15354615fd15SEmmanuel Grumbach * same indices, so we pass them when this function is called. 15364615fd15SEmmanuel Grumbach * 15374615fd15SEmmanuel Grumbach * In D3 entry, we need to hardcoded the indices (because the 15384615fd15SEmmanuel Grumbach * firmware hardcodes the PTK offset to 0). In this case, we 15394615fd15SEmmanuel Grumbach * need to make sure we don't overwrite the hw_key_idx in the 15404615fd15SEmmanuel Grumbach * keyconf structure, because otherwise we cannot configure 15414615fd15SEmmanuel Grumbach * the original ones back when resuming. 1542e705c121SKalle Valo */ 15434615fd15SEmmanuel Grumbach if (key_offset == STA_KEY_IDX_INVALID) { 15444615fd15SEmmanuel Grumbach key_offset = iwl_mvm_set_fw_key_idx(mvm); 15454615fd15SEmmanuel Grumbach if (key_offset == STA_KEY_IDX_INVALID) 1546e705c121SKalle Valo return -ENOSPC; 15474615fd15SEmmanuel Grumbach keyconf->hw_key_idx = key_offset; 1548e705c121SKalle Valo } 1549e705c121SKalle Valo 15504615fd15SEmmanuel Grumbach ret = __iwl_mvm_set_sta_key(mvm, vif, sta, keyconf, key_offset, mcast); 15519c3deeb5SLuca Coelho if (ret) 1552e705c121SKalle Valo goto end; 1553e705c121SKalle Valo 1554e705c121SKalle Valo /* 1555e705c121SKalle Valo * For WEP, the same key is used for multicast and unicast. Upload it 1556e705c121SKalle Valo * again, using the same key offset, and now pointing the other one 1557e705c121SKalle Valo * to the same key slot (offset). 1558e705c121SKalle Valo * If this fails, remove the original as well. 1559e705c121SKalle Valo */ 1560e705c121SKalle Valo if (keyconf->cipher == WLAN_CIPHER_SUITE_WEP40 || 1561e705c121SKalle Valo keyconf->cipher == WLAN_CIPHER_SUITE_WEP104) { 15624615fd15SEmmanuel Grumbach ret = __iwl_mvm_set_sta_key(mvm, vif, sta, keyconf, 15634615fd15SEmmanuel Grumbach key_offset, !mcast); 1564e705c121SKalle Valo if (ret) { 1565e705c121SKalle Valo __iwl_mvm_remove_sta_key(mvm, sta_id, keyconf, mcast); 15669c3deeb5SLuca Coelho goto end; 1567e705c121SKalle Valo } 1568e705c121SKalle Valo } 1569e705c121SKalle Valo 15709c3deeb5SLuca Coelho __set_bit(key_offset, mvm->fw_key_table); 15719c3deeb5SLuca Coelho 1572e705c121SKalle Valo end: 1573e705c121SKalle Valo IWL_DEBUG_WEP(mvm, "key: cipher=%x len=%d idx=%d sta=%pM ret=%d\n", 1574e705c121SKalle Valo keyconf->cipher, keyconf->keylen, keyconf->keyidx, 1575e705c121SKalle Valo sta ? sta->addr : zero_addr, ret); 1576e705c121SKalle Valo return ret; 1577e705c121SKalle Valo } 1578e705c121SKalle Valo 1579e705c121SKalle Valo int iwl_mvm_remove_sta_key(struct iwl_mvm *mvm, 1580e705c121SKalle Valo struct ieee80211_vif *vif, 1581e705c121SKalle Valo struct ieee80211_sta *sta, 1582e705c121SKalle Valo struct ieee80211_key_conf *keyconf) 1583e705c121SKalle Valo { 1584e705c121SKalle Valo bool mcast = !(keyconf->flags & IEEE80211_KEY_FLAG_PAIRWISE); 15855f7a1847SJohannes Berg struct iwl_mvm_sta *mvm_sta; 15865f7a1847SJohannes Berg u8 sta_id = IWL_MVM_STATION_COUNT; 1587e705c121SKalle Valo int ret, i; 1588e705c121SKalle Valo 1589e705c121SKalle Valo lockdep_assert_held(&mvm->mutex); 1590e705c121SKalle Valo 15915f7a1847SJohannes Berg /* Get the station from the mvm local station table */ 15925f7a1847SJohannes Berg mvm_sta = iwl_mvm_get_key_sta(mvm, vif, sta); 1593e705c121SKalle Valo 1594e705c121SKalle Valo IWL_DEBUG_WEP(mvm, "mvm remove dynamic key: idx=%d sta=%d\n", 1595e705c121SKalle Valo keyconf->keyidx, sta_id); 1596e705c121SKalle Valo 1597e705c121SKalle Valo if (keyconf->cipher == WLAN_CIPHER_SUITE_AES_CMAC) 1598e705c121SKalle Valo return iwl_mvm_send_sta_igtk(mvm, keyconf, sta_id, true); 1599e705c121SKalle Valo 1600e705c121SKalle Valo if (!__test_and_clear_bit(keyconf->hw_key_idx, mvm->fw_key_table)) { 1601e705c121SKalle Valo IWL_ERR(mvm, "offset %d not used in fw key table.\n", 1602e705c121SKalle Valo keyconf->hw_key_idx); 1603e705c121SKalle Valo return -ENOENT; 1604e705c121SKalle Valo } 1605e705c121SKalle Valo 1606e705c121SKalle Valo /* track which key was deleted last */ 1607e705c121SKalle Valo for (i = 0; i < STA_KEY_MAX_NUM; i++) { 1608e705c121SKalle Valo if (mvm->fw_key_deleted[i] < U8_MAX) 1609e705c121SKalle Valo mvm->fw_key_deleted[i]++; 1610e705c121SKalle Valo } 1611e705c121SKalle Valo mvm->fw_key_deleted[keyconf->hw_key_idx] = 0; 1612e705c121SKalle Valo 16135f7a1847SJohannes Berg if (!mvm_sta) { 1614e705c121SKalle Valo IWL_DEBUG_WEP(mvm, "station non-existent, early return.\n"); 1615e705c121SKalle Valo return 0; 1616e705c121SKalle Valo } 1617e705c121SKalle Valo 16185f7a1847SJohannes Berg sta_id = mvm_sta->sta_id; 16195f7a1847SJohannes Berg 1620e705c121SKalle Valo ret = __iwl_mvm_remove_sta_key(mvm, sta_id, keyconf, mcast); 1621e705c121SKalle Valo if (ret) 1622e705c121SKalle Valo return ret; 1623e705c121SKalle Valo 1624e705c121SKalle Valo /* delete WEP key twice to get rid of (now useless) offset */ 1625e705c121SKalle Valo if (keyconf->cipher == WLAN_CIPHER_SUITE_WEP40 || 1626e705c121SKalle Valo keyconf->cipher == WLAN_CIPHER_SUITE_WEP104) 1627e705c121SKalle Valo ret = __iwl_mvm_remove_sta_key(mvm, sta_id, keyconf, !mcast); 1628e705c121SKalle Valo 1629e705c121SKalle Valo return ret; 1630e705c121SKalle Valo } 1631e705c121SKalle Valo 1632e705c121SKalle Valo void iwl_mvm_update_tkip_key(struct iwl_mvm *mvm, 1633e705c121SKalle Valo struct ieee80211_vif *vif, 1634e705c121SKalle Valo struct ieee80211_key_conf *keyconf, 1635e705c121SKalle Valo struct ieee80211_sta *sta, u32 iv32, 1636e705c121SKalle Valo u16 *phase1key) 1637e705c121SKalle Valo { 1638e705c121SKalle Valo struct iwl_mvm_sta *mvm_sta; 1639e705c121SKalle Valo bool mcast = !(keyconf->flags & IEEE80211_KEY_FLAG_PAIRWISE); 1640e705c121SKalle Valo 1641e705c121SKalle Valo rcu_read_lock(); 1642e705c121SKalle Valo 16435f7a1847SJohannes Berg mvm_sta = iwl_mvm_get_key_sta(mvm, vif, sta); 16445f7a1847SJohannes Berg if (WARN_ON_ONCE(!mvm_sta)) 164512f17211SEmmanuel Grumbach goto unlock; 1646e705c121SKalle Valo iwl_mvm_send_sta_key(mvm, mvm_sta, keyconf, mcast, 16474615fd15SEmmanuel Grumbach iv32, phase1key, CMD_ASYNC, keyconf->hw_key_idx); 164812f17211SEmmanuel Grumbach 164912f17211SEmmanuel Grumbach unlock: 1650e705c121SKalle Valo rcu_read_unlock(); 1651e705c121SKalle Valo } 1652e705c121SKalle Valo 1653e705c121SKalle Valo void iwl_mvm_sta_modify_ps_wake(struct iwl_mvm *mvm, 1654e705c121SKalle Valo struct ieee80211_sta *sta) 1655e705c121SKalle Valo { 1656e705c121SKalle Valo struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta); 1657e705c121SKalle Valo struct iwl_mvm_add_sta_cmd cmd = { 1658e705c121SKalle Valo .add_modify = STA_MODE_MODIFY, 1659e705c121SKalle Valo .sta_id = mvmsta->sta_id, 1660e705c121SKalle Valo .station_flags_msk = cpu_to_le32(STA_FLG_PS), 1661e705c121SKalle Valo .mac_id_n_color = cpu_to_le32(mvmsta->mac_id_n_color), 1662e705c121SKalle Valo }; 1663e705c121SKalle Valo int ret; 1664e705c121SKalle Valo 1665854c5705SSara Sharon ret = iwl_mvm_send_cmd_pdu(mvm, ADD_STA, CMD_ASYNC, 1666854c5705SSara Sharon iwl_mvm_add_sta_cmd_size(mvm), &cmd); 1667e705c121SKalle Valo if (ret) 1668e705c121SKalle Valo IWL_ERR(mvm, "Failed to send ADD_STA command (%d)\n", ret); 1669e705c121SKalle Valo } 1670e705c121SKalle Valo 1671e705c121SKalle Valo void iwl_mvm_sta_modify_sleep_tx_count(struct iwl_mvm *mvm, 1672e705c121SKalle Valo struct ieee80211_sta *sta, 1673e705c121SKalle Valo enum ieee80211_frame_release_type reason, 1674e705c121SKalle Valo u16 cnt, u16 tids, bool more_data, 1675e705c121SKalle Valo bool agg) 1676e705c121SKalle Valo { 1677e705c121SKalle Valo struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta); 1678e705c121SKalle Valo struct iwl_mvm_add_sta_cmd cmd = { 1679e705c121SKalle Valo .add_modify = STA_MODE_MODIFY, 1680e705c121SKalle Valo .sta_id = mvmsta->sta_id, 1681e705c121SKalle Valo .modify_mask = STA_MODIFY_SLEEPING_STA_TX_COUNT, 1682e705c121SKalle Valo .sleep_tx_count = cpu_to_le16(cnt), 1683e705c121SKalle Valo .mac_id_n_color = cpu_to_le32(mvmsta->mac_id_n_color), 1684e705c121SKalle Valo }; 1685e705c121SKalle Valo int tid, ret; 1686e705c121SKalle Valo unsigned long _tids = tids; 1687e705c121SKalle Valo 1688e705c121SKalle Valo /* convert TIDs to ACs - we don't support TSPEC so that's OK 1689e705c121SKalle Valo * Note that this field is reserved and unused by firmware not 1690e705c121SKalle Valo * supporting GO uAPSD, so it's safe to always do this. 1691e705c121SKalle Valo */ 1692e705c121SKalle Valo for_each_set_bit(tid, &_tids, IWL_MAX_TID_COUNT) 1693e705c121SKalle Valo cmd.awake_acs |= BIT(tid_to_ucode_ac[tid]); 1694e705c121SKalle Valo 1695e705c121SKalle Valo /* If we're releasing frames from aggregation queues then check if the 1696e705c121SKalle Valo * all queues combined that we're releasing frames from have 1697e705c121SKalle Valo * - more frames than the service period, in which case more_data 1698e705c121SKalle Valo * needs to be set 1699e705c121SKalle Valo * - fewer than 'cnt' frames, in which case we need to adjust the 1700e705c121SKalle Valo * firmware command (but do that unconditionally) 1701e705c121SKalle Valo */ 1702e705c121SKalle Valo if (agg) { 1703e705c121SKalle Valo int remaining = cnt; 170436be0eb6SEmmanuel Grumbach int sleep_tx_count; 1705e705c121SKalle Valo 1706e705c121SKalle Valo spin_lock_bh(&mvmsta->lock); 1707e705c121SKalle Valo for_each_set_bit(tid, &_tids, IWL_MAX_TID_COUNT) { 1708e705c121SKalle Valo struct iwl_mvm_tid_data *tid_data; 1709e705c121SKalle Valo u16 n_queued; 1710e705c121SKalle Valo 1711e705c121SKalle Valo tid_data = &mvmsta->tid_data[tid]; 1712e705c121SKalle Valo if (WARN(tid_data->state != IWL_AGG_ON && 1713e705c121SKalle Valo tid_data->state != IWL_EMPTYING_HW_QUEUE_DELBA, 1714e705c121SKalle Valo "TID %d state is %d\n", 1715e705c121SKalle Valo tid, tid_data->state)) { 1716e705c121SKalle Valo spin_unlock_bh(&mvmsta->lock); 1717e705c121SKalle Valo ieee80211_sta_eosp(sta); 1718e705c121SKalle Valo return; 1719e705c121SKalle Valo } 1720e705c121SKalle Valo 1721e705c121SKalle Valo n_queued = iwl_mvm_tid_queued(tid_data); 1722e705c121SKalle Valo if (n_queued > remaining) { 1723e705c121SKalle Valo more_data = true; 1724e705c121SKalle Valo remaining = 0; 1725e705c121SKalle Valo break; 1726e705c121SKalle Valo } 1727e705c121SKalle Valo remaining -= n_queued; 1728e705c121SKalle Valo } 172936be0eb6SEmmanuel Grumbach sleep_tx_count = cnt - remaining; 173036be0eb6SEmmanuel Grumbach if (reason == IEEE80211_FRAME_RELEASE_UAPSD) 173136be0eb6SEmmanuel Grumbach mvmsta->sleep_tx_count = sleep_tx_count; 1732e705c121SKalle Valo spin_unlock_bh(&mvmsta->lock); 1733e705c121SKalle Valo 173436be0eb6SEmmanuel Grumbach cmd.sleep_tx_count = cpu_to_le16(sleep_tx_count); 1735e705c121SKalle Valo if (WARN_ON(cnt - remaining == 0)) { 1736e705c121SKalle Valo ieee80211_sta_eosp(sta); 1737e705c121SKalle Valo return; 1738e705c121SKalle Valo } 1739e705c121SKalle Valo } 1740e705c121SKalle Valo 1741e705c121SKalle Valo /* Note: this is ignored by firmware not supporting GO uAPSD */ 1742e705c121SKalle Valo if (more_data) 1743e705c121SKalle Valo cmd.sleep_state_flags |= cpu_to_le16(STA_SLEEP_STATE_MOREDATA); 1744e705c121SKalle Valo 1745e705c121SKalle Valo if (reason == IEEE80211_FRAME_RELEASE_PSPOLL) { 1746e705c121SKalle Valo mvmsta->next_status_eosp = true; 1747e705c121SKalle Valo cmd.sleep_state_flags |= cpu_to_le16(STA_SLEEP_STATE_PS_POLL); 1748e705c121SKalle Valo } else { 1749e705c121SKalle Valo cmd.sleep_state_flags |= cpu_to_le16(STA_SLEEP_STATE_UAPSD); 1750e705c121SKalle Valo } 1751e705c121SKalle Valo 1752156f92f2SEmmanuel Grumbach /* block the Tx queues until the FW updated the sleep Tx count */ 1753156f92f2SEmmanuel Grumbach iwl_trans_block_txq_ptrs(mvm->trans, true); 1754156f92f2SEmmanuel Grumbach 1755156f92f2SEmmanuel Grumbach ret = iwl_mvm_send_cmd_pdu(mvm, ADD_STA, 1756156f92f2SEmmanuel Grumbach CMD_ASYNC | CMD_WANT_ASYNC_CALLBACK, 1757854c5705SSara Sharon iwl_mvm_add_sta_cmd_size(mvm), &cmd); 1758e705c121SKalle Valo if (ret) 1759e705c121SKalle Valo IWL_ERR(mvm, "Failed to send ADD_STA command (%d)\n", ret); 1760e705c121SKalle Valo } 1761e705c121SKalle Valo 1762e705c121SKalle Valo void iwl_mvm_rx_eosp_notif(struct iwl_mvm *mvm, 1763e705c121SKalle Valo struct iwl_rx_cmd_buffer *rxb) 1764e705c121SKalle Valo { 1765e705c121SKalle Valo struct iwl_rx_packet *pkt = rxb_addr(rxb); 1766e705c121SKalle Valo struct iwl_mvm_eosp_notification *notif = (void *)pkt->data; 1767e705c121SKalle Valo struct ieee80211_sta *sta; 1768e705c121SKalle Valo u32 sta_id = le32_to_cpu(notif->sta_id); 1769e705c121SKalle Valo 1770e705c121SKalle Valo if (WARN_ON_ONCE(sta_id >= IWL_MVM_STATION_COUNT)) 1771e705c121SKalle Valo return; 1772e705c121SKalle Valo 1773e705c121SKalle Valo rcu_read_lock(); 1774e705c121SKalle Valo sta = rcu_dereference(mvm->fw_id_to_mac_id[sta_id]); 1775e705c121SKalle Valo if (!IS_ERR_OR_NULL(sta)) 1776e705c121SKalle Valo ieee80211_sta_eosp(sta); 1777e705c121SKalle Valo rcu_read_unlock(); 1778e705c121SKalle Valo } 1779e705c121SKalle Valo 1780e705c121SKalle Valo void iwl_mvm_sta_modify_disable_tx(struct iwl_mvm *mvm, 1781e705c121SKalle Valo struct iwl_mvm_sta *mvmsta, bool disable) 1782e705c121SKalle Valo { 1783e705c121SKalle Valo struct iwl_mvm_add_sta_cmd cmd = { 1784e705c121SKalle Valo .add_modify = STA_MODE_MODIFY, 1785e705c121SKalle Valo .sta_id = mvmsta->sta_id, 1786e705c121SKalle Valo .station_flags = disable ? cpu_to_le32(STA_FLG_DISABLE_TX) : 0, 1787e705c121SKalle Valo .station_flags_msk = cpu_to_le32(STA_FLG_DISABLE_TX), 1788e705c121SKalle Valo .mac_id_n_color = cpu_to_le32(mvmsta->mac_id_n_color), 1789e705c121SKalle Valo }; 1790e705c121SKalle Valo int ret; 1791e705c121SKalle Valo 1792854c5705SSara Sharon ret = iwl_mvm_send_cmd_pdu(mvm, ADD_STA, CMD_ASYNC, 1793854c5705SSara Sharon iwl_mvm_add_sta_cmd_size(mvm), &cmd); 1794e705c121SKalle Valo if (ret) 1795e705c121SKalle Valo IWL_ERR(mvm, "Failed to send ADD_STA command (%d)\n", ret); 1796e705c121SKalle Valo } 1797e705c121SKalle Valo 1798e705c121SKalle Valo void iwl_mvm_sta_modify_disable_tx_ap(struct iwl_mvm *mvm, 1799e705c121SKalle Valo struct ieee80211_sta *sta, 1800e705c121SKalle Valo bool disable) 1801e705c121SKalle Valo { 1802e705c121SKalle Valo struct iwl_mvm_sta *mvm_sta = iwl_mvm_sta_from_mac80211(sta); 1803e705c121SKalle Valo 1804e705c121SKalle Valo spin_lock_bh(&mvm_sta->lock); 1805e705c121SKalle Valo 1806e705c121SKalle Valo if (mvm_sta->disable_tx == disable) { 1807e705c121SKalle Valo spin_unlock_bh(&mvm_sta->lock); 1808e705c121SKalle Valo return; 1809e705c121SKalle Valo } 1810e705c121SKalle Valo 1811e705c121SKalle Valo mvm_sta->disable_tx = disable; 1812e705c121SKalle Valo 1813e705c121SKalle Valo /* 1814e705c121SKalle Valo * Tell mac80211 to start/stop queuing tx for this station, 1815e705c121SKalle Valo * but don't stop queuing if there are still pending frames 1816e705c121SKalle Valo * for this station. 1817e705c121SKalle Valo */ 1818e705c121SKalle Valo if (disable || !atomic_read(&mvm->pending_frames[mvm_sta->sta_id])) 1819e705c121SKalle Valo ieee80211_sta_block_awake(mvm->hw, sta, disable); 1820e705c121SKalle Valo 1821e705c121SKalle Valo iwl_mvm_sta_modify_disable_tx(mvm, mvm_sta, disable); 1822e705c121SKalle Valo 1823e705c121SKalle Valo spin_unlock_bh(&mvm_sta->lock); 1824e705c121SKalle Valo } 1825e705c121SKalle Valo 1826e705c121SKalle Valo void iwl_mvm_modify_all_sta_disable_tx(struct iwl_mvm *mvm, 1827e705c121SKalle Valo struct iwl_mvm_vif *mvmvif, 1828e705c121SKalle Valo bool disable) 1829e705c121SKalle Valo { 1830e705c121SKalle Valo struct ieee80211_sta *sta; 1831e705c121SKalle Valo struct iwl_mvm_sta *mvm_sta; 1832e705c121SKalle Valo int i; 1833e705c121SKalle Valo 1834e705c121SKalle Valo lockdep_assert_held(&mvm->mutex); 1835e705c121SKalle Valo 1836e705c121SKalle Valo /* Block/unblock all the stations of the given mvmvif */ 1837e705c121SKalle Valo for (i = 0; i < IWL_MVM_STATION_COUNT; i++) { 1838e705c121SKalle Valo sta = rcu_dereference_protected(mvm->fw_id_to_mac_id[i], 1839e705c121SKalle Valo lockdep_is_held(&mvm->mutex)); 1840e705c121SKalle Valo if (IS_ERR_OR_NULL(sta)) 1841e705c121SKalle Valo continue; 1842e705c121SKalle Valo 1843e705c121SKalle Valo mvm_sta = iwl_mvm_sta_from_mac80211(sta); 1844e705c121SKalle Valo if (mvm_sta->mac_id_n_color != 1845e705c121SKalle Valo FW_CMD_ID_AND_COLOR(mvmvif->id, mvmvif->color)) 1846e705c121SKalle Valo continue; 1847e705c121SKalle Valo 1848e705c121SKalle Valo iwl_mvm_sta_modify_disable_tx_ap(mvm, sta, disable); 1849e705c121SKalle Valo } 1850e705c121SKalle Valo } 1851e705c121SKalle Valo 1852e705c121SKalle Valo void iwl_mvm_csa_client_absent(struct iwl_mvm *mvm, struct ieee80211_vif *vif) 1853e705c121SKalle Valo { 1854e705c121SKalle Valo struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 1855e705c121SKalle Valo struct iwl_mvm_sta *mvmsta; 1856e705c121SKalle Valo 1857e705c121SKalle Valo rcu_read_lock(); 1858e705c121SKalle Valo 1859e705c121SKalle Valo mvmsta = iwl_mvm_sta_from_staid_rcu(mvm, mvmvif->ap_sta_id); 1860e705c121SKalle Valo 1861e705c121SKalle Valo if (!WARN_ON(!mvmsta)) 1862e705c121SKalle Valo iwl_mvm_sta_modify_disable_tx(mvm, mvmsta, true); 1863e705c121SKalle Valo 1864e705c121SKalle Valo rcu_read_unlock(); 1865e705c121SKalle Valo } 1866