diff options
Diffstat (limited to 'drivers/net/wireless/iwlwifi/mvm/sta.c')
| -rw-r--r-- | drivers/net/wireless/iwlwifi/mvm/sta.c | 1329 |
1 files changed, 0 insertions, 1329 deletions
diff --git a/drivers/net/wireless/iwlwifi/mvm/sta.c b/drivers/net/wireless/iwlwifi/mvm/sta.c deleted file mode 100644 index 62fe5209093b..000000000000 --- a/drivers/net/wireless/iwlwifi/mvm/sta.c +++ /dev/null @@ -1,1329 +0,0 @@ -/****************************************************************************** - * - * This file is provided under a dual BSD/GPLv2 license. When using or - * redistributing this file, you may do so under either license. - * - * GPL LICENSE SUMMARY - * - * Copyright(c) 2012 - 2013 Intel Corporation. All rights reserved. - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of version 2 of the GNU General Public License as - * published by the Free Software Foundation. - * - * This program is distributed in the hope that it will be useful, but - * WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU - * General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with this program; if not, write to the Free Software - * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110, - * USA - * - * The full GNU General Public License is included in this distribution - * in the file called COPYING. - * - * Contact Information: - * Intel Linux Wireless <ilw@linux.intel.com> - * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497 - * - * BSD LICENSE - * - * Copyright(c) 2012 - 2013 Intel Corporation. All rights reserved. - * All rights reserved. - * - * Redistribution and use in source and binary forms, with or without - * modification, are permitted provided that the following conditions - * are met: - * - * * Redistributions of source code must retain the above copyright - * notice, this list of conditions and the following disclaimer. - * * Redistributions in binary form must reproduce the above copyright - * notice, this list of conditions and the following disclaimer in - * the documentation and/or other materials provided with the - * distribution. - * * Neither the name Intel Corporation nor the names of its - * contributors may be used to endorse or promote products derived - * from this software without specific prior written permission. - * - * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS - * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT - * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR - * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT - * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, - * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT - * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, - * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY - * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT - * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE - * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. - * - *****************************************************************************/ -#include <net/mac80211.h> - -#include "mvm.h" -#include "sta.h" -#include "rs.h" - -static int iwl_mvm_find_free_sta_id(struct iwl_mvm *mvm) -{ - int sta_id; - - WARN_ON_ONCE(test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status)); - - lockdep_assert_held(&mvm->mutex); - - /* Don't take rcu_read_lock() since we are protected by mvm->mutex */ - for (sta_id = 0; sta_id < IWL_MVM_STATION_COUNT; sta_id++) - if (!rcu_dereference_protected(mvm->fw_id_to_mac_id[sta_id], - lockdep_is_held(&mvm->mutex))) - return sta_id; - return IWL_MVM_STATION_COUNT; -} - -/* send station add/update command to firmware */ -int iwl_mvm_sta_send_to_fw(struct iwl_mvm *mvm, struct ieee80211_sta *sta, - bool update) -{ - struct iwl_mvm_sta *mvm_sta = (void *)sta->drv_priv; - struct iwl_mvm_add_sta_cmd add_sta_cmd; - int ret; - u32 status; - u32 agg_size = 0, mpdu_dens = 0; - - memset(&add_sta_cmd, 0, sizeof(add_sta_cmd)); - - add_sta_cmd.sta_id = mvm_sta->sta_id; - add_sta_cmd.mac_id_n_color = cpu_to_le32(mvm_sta->mac_id_n_color); - if (!update) { - add_sta_cmd.tfd_queue_msk = cpu_to_le32(mvm_sta->tfd_queue_msk); - memcpy(&add_sta_cmd.addr, sta->addr, ETH_ALEN); - } - add_sta_cmd.add_modify = update ? 1 : 0; - - add_sta_cmd.station_flags_msk |= cpu_to_le32(STA_FLG_FAT_EN_MSK | - STA_FLG_MIMO_EN_MSK); - - switch (sta->bandwidth) { - case IEEE80211_STA_RX_BW_160: - add_sta_cmd.station_flags |= cpu_to_le32(STA_FLG_FAT_EN_160MHZ); - /* fall through */ - case IEEE80211_STA_RX_BW_80: - add_sta_cmd.station_flags |= cpu_to_le32(STA_FLG_FAT_EN_80MHZ); - /* fall through */ - case IEEE80211_STA_RX_BW_40: - add_sta_cmd.station_flags |= cpu_to_le32(STA_FLG_FAT_EN_40MHZ); - /* fall through */ - case IEEE80211_STA_RX_BW_20: - if (sta->ht_cap.ht_supported) - add_sta_cmd.station_flags |= - cpu_to_le32(STA_FLG_FAT_EN_20MHZ); - break; - } - - switch (sta->rx_nss) { - case 1: - add_sta_cmd.station_flags |= cpu_to_le32(STA_FLG_MIMO_EN_SISO); - break; - case 2: - add_sta_cmd.station_flags |= cpu_to_le32(STA_FLG_MIMO_EN_MIMO2); - break; - case 3 ... 8: - add_sta_cmd.station_flags |= cpu_to_le32(STA_FLG_MIMO_EN_MIMO3); - break; - } - - switch (sta->smps_mode) { - case IEEE80211_SMPS_AUTOMATIC: - case IEEE80211_SMPS_NUM_MODES: - WARN_ON(1); - break; - case IEEE80211_SMPS_STATIC: - /* override NSS */ - add_sta_cmd.station_flags &= ~cpu_to_le32(STA_FLG_MIMO_EN_MSK); - add_sta_cmd.station_flags |= cpu_to_le32(STA_FLG_MIMO_EN_SISO); - break; - case IEEE80211_SMPS_DYNAMIC: - add_sta_cmd.station_flags |= cpu_to_le32(STA_FLG_RTS_MIMO_PROT); - break; - case IEEE80211_SMPS_OFF: - /* nothing */ - break; - } - - if (sta->ht_cap.ht_supported) { - add_sta_cmd.station_flags_msk |= - cpu_to_le32(STA_FLG_MAX_AGG_SIZE_MSK | - STA_FLG_AGG_MPDU_DENS_MSK); - - mpdu_dens = sta->ht_cap.ampdu_density; - } - - if (sta->vht_cap.vht_supported) { - agg_size = sta->vht_cap.cap & - IEEE80211_VHT_CAP_MAX_A_MPDU_LENGTH_EXPONENT_MASK; - agg_size >>= - IEEE80211_VHT_CAP_MAX_A_MPDU_LENGTH_EXPONENT_SHIFT; - } else if (sta->ht_cap.ht_supported) { - agg_size = sta->ht_cap.ampdu_factor; - } - - add_sta_cmd.station_flags |= - cpu_to_le32(agg_size << STA_FLG_MAX_AGG_SIZE_SHIFT); - add_sta_cmd.station_flags |= - cpu_to_le32(mpdu_dens << STA_FLG_AGG_MPDU_DENS_SHIFT); - - status = ADD_STA_SUCCESS; - ret = iwl_mvm_send_cmd_pdu_status(mvm, ADD_STA, sizeof(add_sta_cmd), - &add_sta_cmd, &status); - if (ret) - return ret; - - switch (status) { - case ADD_STA_SUCCESS: - IWL_DEBUG_ASSOC(mvm, "ADD_STA PASSED\n"); - break; - default: - ret = -EIO; - IWL_ERR(mvm, "ADD_STA failed\n"); - break; - } - - return ret; -} - -int iwl_mvm_add_sta(struct iwl_mvm *mvm, - struct ieee80211_vif *vif, - struct ieee80211_sta *sta) -{ - struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); - struct iwl_mvm_sta *mvm_sta = (void *)sta->drv_priv; - int i, ret, sta_id; - - lockdep_assert_held(&mvm->mutex); - - if (!test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status)) - sta_id = iwl_mvm_find_free_sta_id(mvm); - else - sta_id = mvm_sta->sta_id; - - if (WARN_ON_ONCE(sta_id == IWL_MVM_STATION_COUNT)) - return -ENOSPC; - - spin_lock_init(&mvm_sta->lock); - - mvm_sta->sta_id = sta_id; - mvm_sta->mac_id_n_color = FW_CMD_ID_AND_COLOR(mvmvif->id, - mvmvif->color); - mvm_sta->vif = vif; - mvm_sta->max_agg_bufsize = LINK_QUAL_AGG_FRAME_LIMIT_DEF; - mvm_sta->tx_protection = 0; - mvm_sta->tt_tx_protection = false; - - /* HW restart, don't assume the memory has been zeroed */ - atomic_set(&mvm->pending_frames[sta_id], 0); - mvm_sta->tid_disable_agg = 0; - mvm_sta->tfd_queue_msk = 0; - for (i = 0; i < IEEE80211_NUM_ACS; i++) - if (vif->hw_queue[i] != IEEE80211_INVAL_HW_QUEUE) - mvm_sta->tfd_queue_msk |= BIT(vif->hw_queue[i]); - - /* for HW restart - need to reset the seq_number etc... */ - memset(mvm_sta->tid_data, 0, sizeof(mvm_sta->tid_data)); - - ret = iwl_mvm_sta_send_to_fw(mvm, sta, false); - if (ret) - return ret; - - /* The first station added is the AP, the others are TDLS STAs */ - if (vif->type == NL80211_IFTYPE_STATION && - mvmvif->ap_sta_id == IWL_MVM_STATION_COUNT) - mvmvif->ap_sta_id = sta_id; - - rcu_assign_pointer(mvm->fw_id_to_mac_id[sta_id], sta); - - return 0; -} - -int iwl_mvm_update_sta(struct iwl_mvm *mvm, - struct ieee80211_vif *vif, - struct ieee80211_sta *sta) -{ - return iwl_mvm_sta_send_to_fw(mvm, sta, true); -} - -int iwl_mvm_drain_sta(struct iwl_mvm *mvm, struct iwl_mvm_sta *mvmsta, - bool drain) -{ - struct iwl_mvm_add_sta_cmd cmd = {}; - int ret; - u32 status; - - lockdep_assert_held(&mvm->mutex); - - cmd.mac_id_n_color = cpu_to_le32(mvmsta->mac_id_n_color); - cmd.sta_id = mvmsta->sta_id; - cmd.add_modify = STA_MODE_MODIFY; - cmd.station_flags = drain ? cpu_to_le32(STA_FLG_DRAIN_FLOW) : 0; - cmd.station_flags_msk = cpu_to_le32(STA_FLG_DRAIN_FLOW); - - status = ADD_STA_SUCCESS; - ret = iwl_mvm_send_cmd_pdu_status(mvm, ADD_STA, sizeof(cmd), - &cmd, &status); - if (ret) - return ret; - - switch (status) { - case ADD_STA_SUCCESS: - IWL_DEBUG_INFO(mvm, "Frames for staid %d will drained in fw\n", - mvmsta->sta_id); - break; - default: - ret = -EIO; - IWL_ERR(mvm, "Couldn't drain frames for staid %d\n", - mvmsta->sta_id); - break; - } - - return ret; -} - -/* - * Remove a station from the FW table. Before sending the command to remove - * the station validate that the station is indeed known to the driver (sanity - * only). - */ -static int iwl_mvm_rm_sta_common(struct iwl_mvm *mvm, u8 sta_id) -{ - struct ieee80211_sta *sta; - struct iwl_mvm_rm_sta_cmd rm_sta_cmd = { - .sta_id = sta_id, - }; - int ret; - - sta = rcu_dereference_protected(mvm->fw_id_to_mac_id[sta_id], - lockdep_is_held(&mvm->mutex)); - - /* Note: internal stations are marked as error values */ - if (!sta) { - IWL_ERR(mvm, "Invalid station id\n"); - return -EINVAL; - } - - ret = iwl_mvm_send_cmd_pdu(mvm, REMOVE_STA, CMD_SYNC, - sizeof(rm_sta_cmd), &rm_sta_cmd); - if (ret) { - IWL_ERR(mvm, "Failed to remove station. Id=%d\n", sta_id); - return ret; - } - - return 0; -} - -void iwl_mvm_sta_drained_wk(struct work_struct *wk) -{ - struct iwl_mvm *mvm = container_of(wk, struct iwl_mvm, sta_drained_wk); - u8 sta_id; - - /* - * The mutex is needed because of the SYNC cmd, but not only: if the - * work would run concurrently with iwl_mvm_rm_sta, it would run before - * iwl_mvm_rm_sta sets the station as busy, and exit. Then - * iwl_mvm_rm_sta would set the station as busy, and nobody will clean - * that later. - */ - mutex_lock(&mvm->mutex); - - for_each_set_bit(sta_id, mvm->sta_drained, IWL_MVM_STATION_COUNT) { - int ret; - struct ieee80211_sta *sta = - rcu_dereference_protected(mvm->fw_id_to_mac_id[sta_id], - lockdep_is_held(&mvm->mutex)); - - /* This station is in use */ - if (!IS_ERR(sta)) - continue; - - if (PTR_ERR(sta) == -EINVAL) { - IWL_ERR(mvm, "Drained sta %d, but it is internal?\n", - sta_id); - continue; - } - - if (!sta) { - IWL_ERR(mvm, "Drained sta %d, but it was NULL?\n", - sta_id); - continue; - } - - WARN_ON(PTR_ERR(sta) != -EBUSY); - /* This station was removed and we waited until it got drained, - * we can now proceed and remove it. - */ - ret = iwl_mvm_rm_sta_common(mvm, sta_id); - if (ret) { - IWL_ERR(mvm, - "Couldn't remove sta %d after it was drained\n", - sta_id); - continue; - } - rcu_assign_pointer(mvm->fw_id_to_mac_id[sta_id], NULL); - clear_bit(sta_id, mvm->sta_drained); - } - - mutex_unlock(&mvm->mutex); -} - -int iwl_mvm_rm_sta(struct iwl_mvm *mvm, - struct ieee80211_vif *vif, - struct ieee80211_sta *sta) -{ - struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); - struct iwl_mvm_sta *mvm_sta = (void *)sta->drv_priv; - int ret; - - lockdep_assert_held(&mvm->mutex); - - if (vif->type == NL80211_IFTYPE_STATION && - mvmvif->ap_sta_id == mvm_sta->sta_id) { - /* flush its queues here since we are freeing mvm_sta */ - ret = iwl_mvm_flush_tx_path(mvm, mvm_sta->tfd_queue_msk, true); - - /* - * Put a non-NULL since the fw station isn't removed. - * It will be removed after the MAC will be set as - * unassoc. - */ - rcu_assign_pointer(mvm->fw_id_to_mac_id[mvm_sta->sta_id], - ERR_PTR(-EINVAL)); - - /* if we are associated - we can't remove the AP STA now */ - if (vif->bss_conf.assoc) - return ret; - - /* unassoc - go ahead - remove the AP STA now */ - mvmvif->ap_sta_id = IWL_MVM_STATION_COUNT; - } - - /* - * Make sure that the tx response code sees the station as -EBUSY and - * calls the drain worker. - */ - spin_lock_bh(&mvm_sta->lock); - /* - * There are frames pending on the AC queues for this station. - * We need to wait until all the frames are drained... - */ - if (atomic_read(&mvm->pending_frames[mvm_sta->sta_id])) { - rcu_assign_pointer(mvm->fw_id_to_mac_id[mvm_sta->sta_id], - ERR_PTR(-EBUSY)); - spin_unlock_bh(&mvm_sta->lock); - ret = iwl_mvm_drain_sta(mvm, mvm_sta, true); - } else { - spin_unlock_bh(&mvm_sta->lock); - ret = iwl_mvm_rm_sta_common(mvm, mvm_sta->sta_id); - rcu_assign_pointer(mvm->fw_id_to_mac_id[mvm_sta->sta_id], NULL); - } - - return ret; -} - -int iwl_mvm_rm_sta_id(struct iwl_mvm *mvm, - struct ieee80211_vif *vif, - u8 sta_id) -{ - int ret = iwl_mvm_rm_sta_common(mvm, sta_id); - - lockdep_assert_held(&mvm->mutex); - - rcu_assign_pointer(mvm->fw_id_to_mac_id[sta_id], NULL); - return ret; -} - -int iwl_mvm_allocate_int_sta(struct iwl_mvm *mvm, struct iwl_mvm_int_sta *sta, - u32 qmask) -{ - if (!test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status)) { - sta->sta_id = iwl_mvm_find_free_sta_id(mvm); - if (WARN_ON_ONCE(sta->sta_id == IWL_MVM_STATION_COUNT)) - return -ENOSPC; - } - - sta->tfd_queue_msk = qmask; - - /* put a non-NULL value so iterating over the stations won't stop */ - rcu_assign_pointer(mvm->fw_id_to_mac_id[sta->sta_id], ERR_PTR(-EINVAL)); - return 0; -} - -void iwl_mvm_dealloc_int_sta(struct iwl_mvm *mvm, struct iwl_mvm_int_sta *sta) -{ - rcu_assign_pointer(mvm->fw_id_to_mac_id[sta->sta_id], NULL); - memset(sta, 0, sizeof(struct iwl_mvm_int_sta)); - sta->sta_id = IWL_MVM_STATION_COUNT; -} - -static int iwl_mvm_add_int_sta_common(struct iwl_mvm *mvm, - struct iwl_mvm_int_sta *sta, - const u8 *addr, - u16 mac_id, u16 color) -{ - struct iwl_mvm_add_sta_cmd cmd; - int ret; - u32 status; - - lockdep_assert_held(&mvm->mutex); - - memset(&cmd, 0, sizeof(struct iwl_mvm_add_sta_cmd)); - cmd.sta_id = sta->sta_id; - cmd.mac_id_n_color = cpu_to_le32(FW_CMD_ID_AND_COLOR(mac_id, - color)); - - cmd.tfd_queue_msk = cpu_to_le32(sta->tfd_queue_msk); - - if (addr) - memcpy(cmd.addr, addr, ETH_ALEN); - - ret = iwl_mvm_send_cmd_pdu_status(mvm, ADD_STA, sizeof(cmd), - &cmd, &status); - if (ret) - return ret; - - switch (status) { - case ADD_STA_SUCCESS: - IWL_DEBUG_INFO(mvm, "Internal station added.\n"); - return 0; - default: - ret = -EIO; - IWL_ERR(mvm, "Add internal station failed, status=0x%x\n", - status); - break; - } - return ret; -} - -int iwl_mvm_add_aux_sta(struct iwl_mvm *mvm) -{ - int ret; - - lockdep_assert_held(&mvm->mutex); - - /* Add the aux station, but without any queues */ - ret = iwl_mvm_allocate_int_sta(mvm, &mvm->aux_sta, 0); - if (ret) - return ret; - - ret = iwl_mvm_add_int_sta_common(mvm, &mvm->aux_sta, NULL, - MAC_INDEX_AUX, 0); - - if (ret) - iwl_mvm_dealloc_int_sta(mvm, &mvm->aux_sta); - return ret; -} - -/* - * Send the add station command for the vif's broadcast station. - * Assumes that the station was already allocated. - * - * @mvm: the mvm component - * @vif: the interface to which the broadcast station is added - * @bsta: the broadcast station to add. - */ -int iwl_mvm_send_bcast_sta(struct iwl_mvm *mvm, struct ieee80211_vif *vif, - struct iwl_mvm_int_sta *bsta) -{ - struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); - static const u8 baddr[] = {0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF}; - - lockdep_assert_held(&mvm->mutex); - - if (WARN_ON_ONCE(bsta->sta_id == IWL_MVM_STATION_COUNT)) - return -ENOSPC; - - return iwl_mvm_add_int_sta_common(mvm, bsta, baddr, - mvmvif->id, mvmvif->color); -} - -/* Send the FW a request to remove the station from it's internal data - * structures, but DO NOT remove the entry from the local data structures. */ -int iwl_mvm_send_rm_bcast_sta(struct iwl_mvm *mvm, - struct iwl_mvm_int_sta *bsta) -{ - int ret; - - lockdep_assert_held(&mvm->mutex); - - ret = iwl_mvm_rm_sta_common(mvm, bsta->sta_id); - if (ret) - IWL_WARN(mvm, "Failed sending remove station\n"); - return ret; -} - -/* Allocate a new station entry for the broadcast station to the given vif, - * and send it to the FW. - * Note that each P2P mac should have its own broadcast station. - * - * @mvm: the mvm component - * @vif: the interface to which the broadcast station is added - * @bsta: the broadcast station to add. */ -int iwl_mvm_add_bcast_sta(struct iwl_mvm *mvm, struct ieee80211_vif *vif, - struct iwl_mvm_int_sta *bsta) -{ - struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); - static const u8 baddr[] = {0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF}; - u32 qmask; - int ret; - - lockdep_assert_held(&mvm->mutex); - - qmask = iwl_mvm_mac_get_queues_mask(mvm, vif); - ret = iwl_mvm_allocate_int_sta(mvm, bsta, qmask); - if (ret) - return ret; - - ret = iwl_mvm_add_int_sta_common(mvm, bsta, baddr, - mvmvif->id, mvmvif->color); - - if (ret) - iwl_mvm_dealloc_int_sta(mvm, bsta); - return ret; -} - -/* - * Send the FW a request to remove the station from it's internal data - * structures, and in addition remove it from the local data structure. - */ -int iwl_mvm_rm_bcast_sta(struct iwl_mvm *mvm, struct iwl_mvm_int_sta *bsta) -{ - int ret; - - lockdep_assert_held(&mvm->mutex); - - ret = iwl_mvm_rm_sta_common(mvm, bsta->sta_id); - if (ret) - return ret; - - iwl_mvm_dealloc_int_sta(mvm, bsta); - return ret; -} - -int iwl_mvm_sta_rx_agg(struct iwl_mvm *mvm, struct ieee80211_sta *sta, - int tid, u16 ssn, bool start) -{ - struct iwl_mvm_sta *mvm_sta = (void *)sta->drv_priv; - struct iwl_mvm_add_sta_cmd cmd = {}; - int ret; - u32 status; - - lockdep_assert_held(&mvm->mutex); - - cmd.mac_id_n_color = cpu_to_le32(mvm_sta->mac_id_n_color); - cmd.sta_id = mvm_sta->sta_id; - cmd.add_modify = STA_MODE_MODIFY; - cmd.add_immediate_ba_tid = (u8) tid; - cmd.add_immediate_ba_ssn = cpu_to_le16(ssn); - cmd.modify_mask = start ? STA_MODIFY_ADD_BA_TID : - STA_MODIFY_REMOVE_BA_TID; - - status = ADD_STA_SUCCESS; - ret = iwl_mvm_send_cmd_pdu_status(mvm, ADD_STA, sizeof(cmd), - &cmd, &status); - if (ret) - return ret; - - switch (status) { - case ADD_STA_SUCCESS: - IWL_DEBUG_INFO(mvm, "RX BA Session %sed in fw\n", - start ? "start" : "stopp"); - break; - case ADD_STA_IMMEDIATE_BA_FAILURE: - IWL_WARN(mvm, "RX BA Session refused by fw\n"); - ret = -ENOSPC; - break; - default: - ret = -EIO; - IWL_ERR(mvm, "RX BA Session failed %sing, status 0x%x\n", - start ? "start" : "stopp", status); - break; - } - - return ret; -} - -static int iwl_mvm_sta_tx_agg(struct iwl_mvm *mvm, struct ieee80211_sta *sta, - int tid, u8 queue, bool start) -{ - struct iwl_mvm_sta *mvm_sta = (void *)sta->drv_priv; - struct iwl_mvm_add_sta_cmd cmd = {}; - int ret; - u32 status; - - lockdep_assert_held(&mvm->mutex); - - if (start) { - mvm_sta->tfd_queue_msk |= BIT(queue); - mvm_sta->tid_disable_agg &= ~BIT(tid); - } else { - mvm_sta->tfd_queue_msk &= ~BIT(queue); - mvm_sta->tid_disable_agg |= BIT(tid); - } - - cmd.mac_id_n_color = cpu_to_le32(mvm_sta->mac_id_n_color); - cmd.sta_id = mvm_sta->sta_id; - cmd.add_modify = STA_MODE_MODIFY; - cmd.modify_mask = STA_MODIFY_QUEUES | STA_MODIFY_TID_DISABLE_TX; - cmd.tfd_queue_msk = cpu_to_le32(mvm_sta->tfd_queue_msk); - cmd.tid_disable_tx = cpu_to_le16(mvm_sta->tid_disable_agg); - - status = ADD_STA_SUCCESS; - ret = iwl_mvm_send_cmd_pdu_status(mvm, ADD_STA, sizeof(cmd), - &cmd, &status); - if (ret) - return ret; - - switch (status) { - case ADD_STA_SUCCESS: - break; - default: - ret = -EIO; - IWL_ERR(mvm, "TX BA Session failed %sing, status 0x%x\n", - start ? "start" : "stopp", status); - break; - } - - return ret; -} - -static const u8 tid_to_ac[] = { - IEEE80211_AC_BE, - IEEE80211_AC_BK, - IEEE80211_AC_BK, - IEEE80211_AC_BE, - IEEE80211_AC_VI, - IEEE80211_AC_VI, - IEEE80211_AC_VO, - IEEE80211_AC_VO, -}; - -int iwl_mvm_sta_tx_agg_start(struct iwl_mvm *mvm, struct ieee80211_vif *vif, - struct ieee80211_sta *sta, u16 tid, u16 *ssn) -{ - struct iwl_mvm_sta *mvmsta = (void *)sta->drv_priv; - struct iwl_mvm_tid_data *tid_data; - int txq_id; - - if (WARN_ON_ONCE(tid >= IWL_MAX_TID_COUNT)) - return -EINVAL; - - if (mvmsta->tid_data[tid].state != IWL_AGG_OFF) { - IWL_ERR(mvm, "Start AGG when state is not IWL_AGG_OFF %d!\n", - mvmsta->tid_data[tid].state); - return -ENXIO; - } - - lockdep_assert_held(&mvm->mutex); - - for (txq_id = IWL_MVM_FIRST_AGG_QUEUE; - txq_id <= IWL_MVM_LAST_AGG_QUEUE; txq_id++) - if (mvm->queue_to_mac80211[txq_id] == - IWL_INVALID_MAC80211_QUEUE) - break; - - if (txq_id > IWL_MVM_LAST_AGG_QUEUE) { - IWL_ERR(mvm, "Failed to allocate agg queue\n"); - return -EIO; - } - - /* the new tx queue is still connected to the same mac80211 queue */ - mvm->queue_to_mac80211[txq_id] = vif->hw_queue[tid_to_ac[tid]]; - - spin_lock_bh(&mvmsta->lock); - tid_data = &mvmsta->tid_data[tid]; - tid_data->ssn = IEEE80211_SEQ_TO_SN(tid_data->seq_number); - tid_data->txq_id = txq_id; - *ssn = tid_data->ssn; - - IWL_DEBUG_TX_QUEUES(mvm, - "Start AGG: sta %d tid %d queue %d - ssn = %d, next_recl = %d\n", - mvmsta->sta_id, tid, txq_id, tid_data->ssn, - tid_data->next_reclaimed); - - if (tid_data->ssn == tid_data->next_reclaimed) { - tid_data->state = IWL_AGG_STARTING; - ieee80211_start_tx_ba_cb_irqsafe(vif, sta->addr, tid); - } else { - tid_data->state = IWL_EMPTYING_HW_QUEUE_ADDBA; - } - - spin_unlock_bh(&mvmsta->lock); - - return 0; -} - -int iwl_mvm_sta_tx_agg_oper(struct iwl_mvm *mvm, struct ieee80211_vif *vif, - struct ieee80211_sta *sta, u16 tid, u8 buf_size) -{ - struct iwl_mvm_sta *mvmsta = (void *)sta->drv_priv; - struct iwl_mvm_tid_data *tid_data = &mvmsta->tid_data[tid]; - int queue, fifo, ret; - u16 ssn; - - buf_size = min_t(int, buf_size, LINK_QUAL_AGG_FRAME_LIMIT_DEF); - - spin_lock_bh(&mvmsta->lock); - ssn = tid_data->ssn; - queue = tid_data->txq_id; - tid_data->state = IWL_AGG_ON; - tid_data->ssn = 0xffff; - spin_unlock_bh(&mvmsta->lock); - - fifo = iwl_mvm_ac_to_tx_fifo[tid_to_ac[tid]]; - - ret = iwl_mvm_sta_tx_agg(mvm, sta, tid, queue, true); - if (ret) - return -EIO; - - iwl_trans_txq_enable(mvm->trans, queue, fifo, mvmsta->sta_id, tid, - buf_size, ssn); - - /* - * Even though in theory the peer could have different - * aggregation reorder buffer sizes for different sessions, - * our ucode doesn't allow for that and has a global limit - * for each station. Therefore, use the minimum of all the - * aggregation sessions and our default value. - */ - mvmsta->max_agg_bufsize = - min(mvmsta->max_agg_bufsize, buf_size); - mvmsta->lq_sta.lq.agg_frame_cnt_limit = mvmsta->max_agg_bufsize; - - IWL_DEBUG_HT(mvm, "Tx aggregation enabled on ra = %pM tid = %d\n", - sta->addr, tid); - - if (mvm->cfg->ht_params->use_rts_for_aggregation) { - /* - * switch to RTS/CTS if it is the prefer protection - * method for HT traffic - * this function also sends the LQ command - */ - return iwl_mvm_tx_protection(mvm, &mvmsta->lq_sta.lq, - mvmsta, true); - /* - * TODO: remove the TLC_RTS flag when we tear down the last - * AGG session (agg_tids_count in DVM) - */ - } - - return iwl_mvm_send_lq_cmd(mvm, &mvmsta->lq_sta.lq, CMD_ASYNC, false); -} - -int iwl_mvm_sta_tx_agg_stop(struct iwl_mvm *mvm, struct ieee80211_vif *vif, - struct ieee80211_sta *sta, u16 tid) -{ - struct iwl_mvm_sta *mvmsta = (void *)sta->drv_priv; - struct iwl_mvm_tid_data *tid_data = &mvmsta->tid_data[tid]; - u16 txq_id; - int err; - - - /* - * If mac80211 is cleaning its state, then say that we finished since - * our state has been cleared anyway. - */ - if (test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status)) { - ieee80211_stop_tx_ba_cb_irqsafe(vif, sta->addr, tid); - return 0; - } - - spin_lock_bh(&mvmsta->lock); - - txq_id = tid_data->txq_id; - - IWL_DEBUG_TX_QUEUES(mvm, "Stop AGG: sta %d tid %d q %d state %d\n", - mvmsta->sta_id, tid, txq_id, tid_data->state); - - switch (tid_data->state) { - case IWL_AGG_ON: - tid_data->ssn = IEEE80211_SEQ_TO_SN(tid_data->seq_number); - - IWL_DEBUG_TX_QUEUES(mvm, - "ssn = %d, next_recl = %d\n", - tid_data->ssn, tid_data->next_reclaimed); - - /* There are still packets for this RA / TID in the HW */ - if (tid_data->ssn != tid_data->next_reclaimed) { - tid_data->state = IWL_EMPTYING_HW_QUEUE_DELBA; - err = 0; - break; - } - - tid_data->ssn = 0xffff; - iwl_trans_txq_disable(mvm->trans, txq_id); - /* fall through */ - case IWL_AGG_STARTING: - case IWL_EMPTYING_HW_QUEUE_ADDBA: - /* - * The agg session has been stopped before it was set up. This - * can happen when the AddBA timer times out for example. - */ - - /* No barriers since we are under mutex */ - lockdep_assert_held(&mvm->mutex); - mvm->queue_to_mac80211[txq_id] = IWL_INVALID_MAC80211_QUEUE; - - ieee80211_stop_tx_ba_cb_irqsafe(vif, sta->addr, tid); - tid_data->state = IWL_AGG_OFF; - err = 0; - break; - default: - IWL_ERR(mvm, - "Stopping AGG while state not ON or starting for %d on %d (%d)\n", - mvmsta->sta_id, tid, tid_data->state); - IWL_ERR(mvm, - "\ttid_data->txq_id = %d\n", tid_data->txq_id); - err = -EINVAL; - } - - spin_unlock_bh(&mvmsta->lock); - - return err; -} - -int iwl_mvm_sta_tx_agg_flush(struct iwl_mvm *mvm, struct ieee80211_vif *vif, - struct ieee80211_sta *sta, u16 tid) -{ - struct iwl_mvm_sta *mvmsta = (void *)sta->drv_priv; - struct iwl_mvm_tid_data *tid_data = &mvmsta->tid_data[tid]; - u16 txq_id; - - /* - * First set the agg state to OFF to avoid calling - * ieee80211_stop_tx_ba_cb in iwl_mvm_check_ratid_empty. - */ - spin_lock_bh(&mvmsta->lock); - txq_id = tid_data->txq_id; - IWL_DEBUG_TX_QUEUES(mvm, "Flush AGG: sta %d tid %d q %d state %d\n", - mvmsta->sta_id, tid, txq_id, tid_data->state); - tid_data->state = IWL_AGG_OFF; - spin_unlock_bh(&mvmsta->lock); - - if (iwl_mvm_flush_tx_path(mvm, BIT(txq_id), true)) - IWL_ERR(mvm, "Couldn't flush the AGG queue\n"); - - iwl_trans_txq_disable(mvm->trans, tid_data->txq_id); - mvm->queue_to_mac80211[tid_data->txq_id] = - IWL_INVALID_MAC80211_QUEUE; - - return 0; -} - -static int iwl_mvm_set_fw_key_idx(struct iwl_mvm *mvm) -{ - int i; - - lockdep_assert_held(&mvm->mutex); - - i = find_first_zero_bit(mvm->fw_key_table, STA_KEY_MAX_NUM); - - if (i == STA_KEY_MAX_NUM) - return STA_KEY_IDX_INVALID; - - __set_bit(i, mvm->fw_key_table); - - return i; -} - -static u8 iwl_mvm_get_key_sta_id(struct ieee80211_vif *vif, - struct ieee80211_sta *sta) -{ - struct iwl_mvm_vif *mvmvif = (void *)vif->drv_priv; - - if (sta) { - struct iwl_mvm_sta *mvm_sta = (void *)sta->drv_priv; - - return mvm_sta->sta_id; - } - - /* - * The device expects GTKs for station interfaces to be - * installed as GTKs for the AP station. If we have no - * station ID, then use AP's station ID. - */ - if (vif->type == NL80211_IFTYPE_STATION && - mvmvif->ap_sta_id != IWL_MVM_STATION_COUNT) - return mvmvif->ap_sta_id; - - return IWL_MVM_STATION_COUNT; -} - -static int iwl_mvm_send_sta_key(struct iwl_mvm *mvm, - struct iwl_mvm_sta *mvm_sta, - struct ieee80211_key_conf *keyconf, - u8 sta_id, u32 tkip_iv32, u16 *tkip_p1k, - u32 cmd_flags) -{ - __le16 key_flags; - struct iwl_mvm_add_sta_cmd cmd = {}; - int ret, status; - u16 keyidx; - int i; - - keyidx = (keyconf->keyidx << STA_KEY_FLG_KEYID_POS) & - STA_KEY_FLG_KEYID_MSK; - key_flags = cpu_to_le16(keyidx); - key_flags |= cpu_to_le16(STA_KEY_FLG_WEP_KEY_MAP); - - switch (keyconf->cipher) { - case WLAN_CIPHER_SUITE_TKIP: - key_flags |= cpu_to_le16(STA_KEY_FLG_TKIP); - cmd.key.tkip_rx_tsc_byte2 = tkip_iv32; - for (i = 0; i < 5; i++) - cmd.key.tkip_rx_ttak[i] = cpu_to_le16(tkip_p1k[i]); - memcpy(cmd.key.key, keyconf->key, keyconf->keylen); - break; - case WLAN_CIPHER_SUITE_CCMP: - key_flags |= cpu_to_le16(STA_KEY_FLG_CCM); - memcpy(cmd.key.key, keyconf->key, keyconf->keylen); - break; - default: - WARN_ON(1); - return -EINVAL; - } - - if (!(keyconf->flags & IEEE80211_KEY_FLAG_PAIRWISE)) - key_flags |= cpu_to_le16(STA_KEY_MULTICAST); - - cmd.mac_id_n_color = cpu_to_le32(mvm_sta->mac_id_n_color); - cmd.key.key_offset = keyconf->hw_key_idx; - cmd.key.key_flags = key_flags; - cmd.add_modify = STA_MODE_MODIFY; - cmd.modify_mask = STA_MODIFY_KEY; - cmd.sta_id = sta_id; - - status = ADD_STA_SUCCESS; - if (cmd_flags == CMD_SYNC) - ret = iwl_mvm_send_cmd_pdu_status(mvm, ADD_STA, sizeof(cmd), - &cmd, &status); - else - ret = iwl_mvm_send_cmd_pdu(mvm, ADD_STA, CMD_ASYNC, - sizeof(cmd), &cmd); - - switch (status) { - case ADD_STA_SUCCESS: - IWL_DEBUG_WEP(mvm, "MODIFY_STA: set dynamic key passed\n"); - break; - default: - ret = -EIO; - IWL_ERR(mvm, "MODIFY_STA: set dynamic key failed\n"); - break; - } - - return ret; -} - -static int iwl_mvm_send_sta_igtk(struct iwl_mvm *mvm, - struct ieee80211_key_conf *keyconf, - u8 sta_id, bool remove_key) -{ - struct iwl_mvm_mgmt_mcast_key_cmd igtk_cmd = {}; - - /* verify the key details match the required command's expectations */ - if (WARN_ON((keyconf->cipher != WLAN_CIPHER_SUITE_AES_CMAC) || - (keyconf->flags & IEEE80211_KEY_FLAG_PAIRWISE) || - (keyconf->keyidx != 4 && keyconf->keyidx != 5))) - return -EINVAL; - - igtk_cmd.key_id = cpu_to_le32(keyconf->keyidx); - igtk_cmd.sta_id = cpu_to_le32(sta_id); - - if (remove_key) { - igtk_cmd.ctrl_flags |= cpu_to_le32(STA_KEY_NOT_VALID); - } else { - struct ieee80211_key_seq seq; - const u8 *pn; - - memcpy(igtk_cmd.IGTK, keyconf->key, keyconf->keylen); - ieee80211_aes_cmac_calculate_k1_k2(keyconf, - igtk_cmd.K1, igtk_cmd.K2); - ieee80211_get_key_rx_seq(keyconf, 0, &seq); - pn = seq.aes_cmac.pn; - igtk_cmd.receive_seq_cnt = cpu_to_le64(((u64) pn[5] << 0) | - ((u64) pn[4] << 8) | - ((u64) pn[3] << 16) | - ((u64) pn[2] << 24) | - ((u64) pn[1] << 32) | - ((u64) pn[0] << 40)); - } - - IWL_DEBUG_INFO(mvm, "%s igtk for sta %u\n", - remove_key ? "removing" : "installing", - igtk_cmd.sta_id); - - return iwl_mvm_send_cmd_pdu(mvm, MGMT_MCAST_KEY, CMD_SYNC, - sizeof(igtk_cmd), &igtk_cmd); -} - - -static inline u8 *iwl_mvm_get_mac_addr(struct iwl_mvm *mvm, - struct ieee80211_vif *vif, - struct ieee80211_sta *sta) -{ - struct iwl_mvm_vif *mvmvif = (void *)vif->drv_priv; - - if (sta) - return sta->addr; - - if (vif->type == NL80211_IFTYPE_STATION && - mvmvif->ap_sta_id != IWL_MVM_STATION_COUNT) { - u8 sta_id = mvmvif->ap_sta_id; - sta = rcu_dereference_protected(mvm->fw_id_to_mac_id[sta_id], - lockdep_is_held(&mvm->mutex)); - return sta->addr; - } - - - return NULL; -} - -int iwl_mvm_set_sta_key(struct iwl_mvm *mvm, - struct ieee80211_vif *vif, - struct ieee80211_sta *sta, - struct ieee80211_key_conf *keyconf, - bool have_key_offset) -{ - struct iwl_mvm_sta *mvm_sta; - int ret; - u8 *addr, sta_id; - struct ieee80211_key_seq seq; - u16 p1k[5]; - - lockdep_assert_held(&mvm->mutex); - - /* Get the station id from the mvm local station table */ - sta_id = iwl_mvm_get_key_sta_id(vif, sta); - if (sta_id == IWL_MVM_STATION_COUNT) { - IWL_ERR(mvm, "Failed to find station id\n"); - return -EINVAL; - } - - if (keyconf->cipher == WLAN_CIPHER_SUITE_AES_CMAC) { - ret = iwl_mvm_send_sta_igtk(mvm, keyconf, sta_id, false); - goto end; - } - - /* - * It is possible that the 'sta' parameter is NULL, and thus - * there is a need to retrieve the sta from the local station table. - */ - if (!sta) { - sta = rcu_dereference_protected(mvm->fw_id_to_mac_id[sta_id], - lockdep_is_held(&mvm->mutex)); - if (IS_ERR_OR_NULL(sta)) { - IWL_ERR(mvm, "Invalid station id\n"); - return -EINVAL; - } - } - - mvm_sta = (struct iwl_mvm_sta *)sta->drv_priv; - if (WARN_ON_ONCE(mvm_sta->vif != vif)) - return -EINVAL; - - if (!have_key_offset) { - /* - * The D3 firmware hardcodes the PTK offset to 0, so we have to - * configure it there. As a result, this workaround exists to - * let the caller set the key offset (hw_key_idx), see d3.c. - */ - keyconf->hw_key_idx = iwl_mvm_set_fw_key_idx(mvm); - if (keyconf->hw_key_idx == STA_KEY_IDX_INVALID) - return -ENOSPC; - } - - switch (keyconf->cipher) { - case WLAN_CIPHER_SUITE_TKIP: - addr = iwl_mvm_get_mac_addr(mvm, vif, sta); - /* get phase 1 key from mac80211 */ - ieee80211_get_key_rx_seq(keyconf, 0, &seq); - ieee80211_get_tkip_rx_p1k(keyconf, addr, seq.tkip.iv32, p1k); - ret = iwl_mvm_send_sta_key(mvm, mvm_sta, keyconf, sta_id, - seq.tkip.iv32, p1k, CMD_SYNC); - break; - case WLAN_CIPHER_SUITE_CCMP: - ret = iwl_mvm_send_sta_key(mvm, mvm_sta, keyconf, sta_id, - 0, NULL, CMD_SYNC); - break; - default: - IWL_ERR(mvm, "Unknown cipher %x\n", keyconf->cipher); - ret = -EINVAL; - } - - if (ret) - __clear_bit(keyconf->hw_key_idx, mvm->fw_key_table); - -end: - IWL_DEBUG_WEP(mvm, "key: cipher=%x len=%d idx=%d sta=%pM ret=%d\n", - keyconf->cipher, keyconf->keylen, keyconf->keyidx, - sta->addr, ret); - return ret; -} - -int iwl_mvm_remove_sta_key(struct iwl_mvm *mvm, - struct ieee80211_vif *vif, - struct ieee80211_sta *sta, - struct ieee80211_key_conf *keyconf) -{ - struct iwl_mvm_sta *mvm_sta; - struct iwl_mvm_add_sta_cmd cmd = {}; - __le16 key_flags; - int ret, status; - u8 sta_id; - - lockdep_assert_held(&mvm->mutex); - - /* Get the station id from the mvm local station table */ - sta_id = iwl_mvm_get_key_sta_id(vif, sta); - - IWL_DEBUG_WEP(mvm, "mvm remove dynamic key: idx=%d sta=%d\n", - keyconf->keyidx, sta_id); - - if (keyconf->cipher == WLAN_CIPHER_SUITE_AES_CMAC) - return iwl_mvm_send_sta_igtk(mvm, keyconf, sta_id, true); - - ret = __test_and_clear_bit(keyconf->hw_key_idx, mvm->fw_key_table); - if (!ret) { - IWL_ERR(mvm, "offset %d not used in fw key table.\n", - keyconf->hw_key_idx); - return -ENOENT; - } - - if (sta_id == IWL_MVM_STATION_COUNT) { - IWL_DEBUG_WEP(mvm, "station non-existent, early return.\n"); - return 0; - } - - /* - * It is possible that the 'sta' parameter is NULL, and thus - * there is a need to retrieve the sta from the local station table, - * for example when a GTK is removed (where the sta_id will then be - * the AP ID, and no station was passed by mac80211.) - */ - if (!sta) { - sta = rcu_dereference_protected(mvm->fw_id_to_mac_id[sta_id], - lockdep_is_held(&mvm->mutex)); - if (!sta) { - IWL_ERR(mvm, "Invalid station id\n"); - return -EINVAL; - } - } - - mvm_sta = (struct iwl_mvm_sta *)sta->drv_priv; - if (WARN_ON_ONCE(mvm_sta->vif != vif)) - return -EINVAL; - - key_flags = cpu_to_le16((keyconf->keyidx << STA_KEY_FLG_KEYID_POS) & - STA_KEY_FLG_KEYID_MSK); - key_flags |= cpu_to_le16(STA_KEY_FLG_NO_ENC | STA_KEY_FLG_WEP_KEY_MAP); - key_flags |= cpu_to_le16(STA_KEY_NOT_VALID); - - if (!(keyconf->flags & IEEE80211_KEY_FLAG_PAIRWISE)) - key_flags |= cpu_to_le16(STA_KEY_MULTICAST); - - cmd.mac_id_n_color = cpu_to_le32(mvm_sta->mac_id_n_color); - cmd.key.key_flags = key_flags; - cmd.key.key_offset = keyconf->hw_key_idx; - cmd.sta_id = sta_id; - - cmd.modify_mask = STA_MODIFY_KEY; - cmd.add_modify = STA_MODE_MODIFY; - - status = ADD_STA_SUCCESS; - ret = iwl_mvm_send_cmd_pdu_status(mvm, ADD_STA, sizeof(cmd), - &cmd, &status); - - switch (status) { - case ADD_STA_SUCCESS: - IWL_DEBUG_WEP(mvm, "MODIFY_STA: remove sta key passed\n"); - break; - default: - ret = -EIO; - IWL_ERR(mvm, "MODIFY_STA: remove sta key failed\n"); - break; - } - - return ret; -} - -void iwl_mvm_update_tkip_key(struct iwl_mvm *mvm, - struct ieee80211_vif *vif, - struct ieee80211_key_conf *keyconf, - struct ieee80211_sta *sta, u32 iv32, - u16 *phase1key) -{ - struct iwl_mvm_sta *mvm_sta; - u8 sta_id = iwl_mvm_get_key_sta_id(vif, sta); - - if (WARN_ON_ONCE(sta_id == IWL_MVM_STATION_COUNT)) - return; - - rcu_read_lock(); - - if (!sta) { - sta = rcu_dereference(mvm->fw_id_to_mac_id[sta_id]); - if (WARN_ON(IS_ERR_OR_NULL(sta))) { - rcu_read_unlock(); - return; - } - } - - mvm_sta = (void *)sta->drv_priv; - iwl_mvm_send_sta_key(mvm, mvm_sta, keyconf, sta_id, - iv32, phase1key, CMD_ASYNC); - rcu_read_unlock(); -} - -void iwl_mvm_sta_modify_ps_wake(struct iwl_mvm *mvm, - struct ieee80211_sta *sta) -{ - struct iwl_mvm_sta *mvmsta = (void *)sta->drv_priv; - struct iwl_mvm_add_sta_cmd cmd = { - .add_modify = STA_MODE_MODIFY, - .sta_id = mvmsta->sta_id, - .station_flags_msk = cpu_to_le32(STA_FLG_PS), - .mac_id_n_color = cpu_to_le32(mvmsta->mac_id_n_color), - }; - int ret; - - ret = iwl_mvm_send_cmd_pdu(mvm, ADD_STA, CMD_ASYNC, sizeof(cmd), &cmd); - if (ret) - IWL_ERR(mvm, "Failed to send ADD_STA command (%d)\n", ret); -} - -void iwl_mvm_sta_modify_sleep_tx_count(struct iwl_mvm *mvm, - struct ieee80211_sta *sta, - enum ieee80211_frame_release_type reason, - u16 cnt) -{ - u16 sleep_state_flags = - (reason == IEEE80211_FRAME_RELEASE_UAPSD) ? - STA_SLEEP_STATE_UAPSD : STA_SLEEP_STATE_PS_POLL; - struct iwl_mvm_sta *mvmsta = (void *)sta->drv_priv; - struct iwl_mvm_add_sta_cmd cmd = { - .add_modify = STA_MODE_MODIFY, - .sta_id = mvmsta->sta_id, - .modify_mask = STA_MODIFY_SLEEPING_STA_TX_COUNT, - .sleep_tx_count = cpu_to_le16(cnt), - .mac_id_n_color = cpu_to_le32(mvmsta->mac_id_n_color), - /* - * Same modify mask for sleep_tx_count and sleep_state_flags so - * we must set the sleep_state_flags too. - */ - .sleep_state_flags = cpu_to_le16(sleep_state_flags), - }; - int ret; - - /* TODO: somehow the fw doesn't seem to take PS_POLL into account */ - ret = iwl_mvm_send_cmd_pdu(mvm, ADD_STA, CMD_ASYNC, sizeof(cmd), &cmd); - if (ret) - IWL_ERR(mvm, "Failed to send ADD_STA command (%d)\n", ret); -} |