+++ /dev/null
-/******************************************************************************
- *
- * 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 - 2015 Intel Corporation. All rights reserved.
- * Copyright(c) 2013 - 2015 Intel Mobile Communications GmbH
- *
- * 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 - 2015 Intel Corporation. All rights reserved.
- * Copyright(c) 2013 - 2015 Intel Mobile Communications GmbH
- * 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,
- enum nl80211_iftype iftype)
-{
- int sta_id;
- u32 reserved_ids = 0;
-
- BUILD_BUG_ON(IWL_MVM_STATION_COUNT > 32);
- WARN_ON_ONCE(test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status));
-
- lockdep_assert_held(&mvm->mutex);
-
- /* d0i3/d3 assumes the AP's sta_id (of sta vif) is 0. reserve it. */
- if (iftype != NL80211_IFTYPE_STATION)
- reserved_ids = BIT(0);
-
- /* 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 (BIT(sta_id) & reserved_ids)
- continue;
-
- 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 = iwl_mvm_sta_from_mac80211(sta);
- struct iwl_mvm_add_sta_cmd add_sta_cmd = {
- .sta_id = mvm_sta->sta_id,
- .mac_id_n_color = cpu_to_le32(mvm_sta->mac_id_n_color),
- .add_modify = update ? 1 : 0,
- .station_flags_msk = cpu_to_le32(STA_FLG_FAT_EN_MSK |
- STA_FLG_MIMO_EN_MSK),
- };
- int ret;
- u32 status;
- u32 agg_size = 0, mpdu_dens = 0;
-
- 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);
- }
-
- 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;
-}
-
-static int iwl_mvm_tdls_sta_init(struct iwl_mvm *mvm,
- struct ieee80211_sta *sta)
-{
- unsigned long used_hw_queues;
- struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta);
- unsigned int wdg_timeout =
- iwl_mvm_get_wd_timeout(mvm, NULL, true, false);
- u32 ac;
-
- lockdep_assert_held(&mvm->mutex);
-
- used_hw_queues = iwl_mvm_get_used_hw_queues(mvm, NULL);
-
- /* Find available queues, and allocate them to the ACs */
- for (ac = 0; ac < IEEE80211_NUM_ACS; ac++) {
- u8 queue = find_first_zero_bit(&used_hw_queues,
- mvm->first_agg_queue);
-
- if (queue >= mvm->first_agg_queue) {
- IWL_ERR(mvm, "Failed to allocate STA queue\n");
- return -EBUSY;
- }
-
- __set_bit(queue, &used_hw_queues);
- mvmsta->hw_queue[ac] = queue;
- }
-
- /* Found a place for all queues - enable them */
- for (ac = 0; ac < IEEE80211_NUM_ACS; ac++) {
- iwl_mvm_enable_ac_txq(mvm, mvmsta->hw_queue[ac],
- mvmsta->hw_queue[ac],
- iwl_mvm_ac_to_tx_fifo[ac], 0,
- wdg_timeout);
- mvmsta->tfd_queue_msk |= BIT(mvmsta->hw_queue[ac]);
- }
-
- return 0;
-}
-
-static void iwl_mvm_tdls_sta_deinit(struct iwl_mvm *mvm,
- struct ieee80211_sta *sta)
-{
- struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta);
- unsigned long sta_msk;
- int i;
-
- lockdep_assert_held(&mvm->mutex);
-
- /* disable the TDLS STA-specific queues */
- sta_msk = mvmsta->tfd_queue_msk;
- for_each_set_bit(i, &sta_msk, sizeof(sta_msk) * BITS_PER_BYTE)
- iwl_mvm_disable_txq(mvm, i, i, IWL_MAX_TID_COUNT, 0);
-}
-
-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 = iwl_mvm_sta_from_mac80211(sta);
- 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,
- ieee80211_vif_type_p2p(vif));
- else
- sta_id = mvm_sta->sta_id;
-
- if (sta_id == IWL_MVM_STATION_COUNT)
- return -ENOSPC;
-
- if (vif->type == NL80211_IFTYPE_AP) {
- mvmvif->ap_assoc_sta_count++;
- iwl_mvm_mac_ctxt_changed(mvm, vif, false, NULL);
- }
-
- 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 = 0xffff; /* No aggs at first */
- mvm_sta->tfd_queue_msk = 0;
-
- /* allocate new queues for a TDLS station */
- if (sta->tdls) {
- ret = iwl_mvm_tdls_sta_init(mvm, sta);
- if (ret)
- return ret;
- } else {
- 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 - reset everything but the sequence number */
- for (i = 0; i < IWL_MAX_TID_COUNT; i++) {
- u16 seq = mvm_sta->tid_data[i].seq_number;
- memset(&mvm_sta->tid_data[i], 0, sizeof(mvm_sta->tid_data[i]));
- mvm_sta->tid_data[i].seq_number = seq;
- }
- mvm_sta->agg_tids = 0;
-
- ret = iwl_mvm_sta_send_to_fw(mvm, sta, false);
- if (ret)
- goto err;
-
- if (vif->type == NL80211_IFTYPE_STATION) {
- if (!sta->tdls) {
- WARN_ON(mvmvif->ap_sta_id != IWL_MVM_STATION_COUNT);
- mvmvif->ap_sta_id = sta_id;
- } else {
- WARN_ON(mvmvif->ap_sta_id == IWL_MVM_STATION_COUNT);
- }
- }
-
- rcu_assign_pointer(mvm->fw_id_to_mac_id[sta_id], sta);
-
- return 0;
-
-err:
- iwl_mvm_tdls_sta_deinit(mvm, sta);
- return ret;
-}
-
-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, 0,
- 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 or RCU-removed; the latter happens in
- * managed mode, where mac80211 removes the station before we
- * can remove it from firmware (we can only do that after the
- * MAC is marked unassociated), and possibly while the deauth
- * frame to disconnect from the AP is still queued. Then, the
- * station pointer is -ENOENT when the last skb is reclaimed.
- */
- if (!IS_ERR(sta) || PTR_ERR(sta) == -ENOENT)
- 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_INIT_POINTER(mvm->fw_id_to_mac_id[sta_id], NULL);
- clear_bit(sta_id, mvm->sta_drained);
-
- if (mvm->tfd_drained[sta_id]) {
- unsigned long i, msk = mvm->tfd_drained[sta_id];
-
- for_each_set_bit(i, &msk, sizeof(msk) * BITS_PER_BYTE)
- iwl_mvm_disable_txq(mvm, i, i,
- IWL_MAX_TID_COUNT, 0);
-
- mvm->tfd_drained[sta_id] = 0;
- IWL_DEBUG_TDLS(mvm, "Drained sta %d, with queues %ld\n",
- sta_id, msk);
- }
- }
-
- 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 = iwl_mvm_sta_from_mac80211(sta);
- int ret;
-
- lockdep_assert_held(&mvm->mutex);
-
- if (vif->type == NL80211_IFTYPE_STATION &&
- mvmvif->ap_sta_id == mvm_sta->sta_id) {
- ret = iwl_mvm_drain_sta(mvm, mvm_sta, true);
- if (ret)
- return ret;
- /* flush its queues here since we are freeing mvm_sta */
- ret = iwl_mvm_flush_tx_path(mvm, mvm_sta->tfd_queue_msk, 0);
- if (ret)
- return ret;
- ret = iwl_trans_wait_tx_queue_empty(mvm->trans,
- mvm_sta->tfd_queue_msk);
- if (ret)
- return ret;
- ret = iwl_mvm_drain_sta(mvm, mvm_sta, false);
-
- /* 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;
-
- /* clear d0i3_ap_sta_id if no longer relevant */
- if (mvm->d0i3_ap_sta_id == mvm_sta->sta_id)
- mvm->d0i3_ap_sta_id = IWL_MVM_STATION_COUNT;
- }
-
- /*
- * This shouldn't happen - the TDLS channel switch should be canceled
- * before the STA is removed.
- */
- if (WARN_ON_ONCE(mvm->tdls_cs.peer.sta_id == mvm_sta->sta_id)) {
- mvm->tdls_cs.peer.sta_id = IWL_MVM_STATION_COUNT;
- cancel_delayed_work(&mvm->tdls_cs.dwork);
- }
-
- /*
- * 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);
-
- /* disable TDLS sta queues on drain complete */
- if (sta->tdls) {
- mvm->tfd_drained[mvm_sta->sta_id] =
- mvm_sta->tfd_queue_msk;
- IWL_DEBUG_TDLS(mvm, "Draining TDLS sta %d\n",
- mvm_sta->sta_id);
- }
-
- ret = iwl_mvm_drain_sta(mvm, mvm_sta, true);
- } else {
- spin_unlock_bh(&mvm_sta->lock);
-
- if (sta->tdls)
- iwl_mvm_tdls_sta_deinit(mvm, sta);
-
- ret = iwl_mvm_rm_sta_common(mvm, mvm_sta->sta_id);
- RCU_INIT_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_INIT_POINTER(mvm->fw_id_to_mac_id[sta_id], NULL);
- return ret;
-}
-
-static int iwl_mvm_allocate_int_sta(struct iwl_mvm *mvm,
- struct iwl_mvm_int_sta *sta,
- u32 qmask, enum nl80211_iftype iftype)
-{
- if (!test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status)) {
- sta->sta_id = iwl_mvm_find_free_sta_id(mvm, iftype);
- 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;
-}
-
-static void iwl_mvm_dealloc_int_sta(struct iwl_mvm *mvm,
- struct iwl_mvm_int_sta *sta)
-{
- RCU_INIT_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(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)
-{
- unsigned int wdg_timeout = iwlmvm_mod_params.tfd_q_hang_detect ?
- mvm->cfg->base_params->wd_timeout :
- IWL_WATCHDOG_DISABLED;
- int ret;
-
- lockdep_assert_held(&mvm->mutex);
-
- /* Map Aux queue to fifo - needs to happen before adding Aux station */
- iwl_mvm_enable_ac_txq(mvm, mvm->aux_queue, mvm->aux_queue,
- IWL_MVM_TX_FIFO_MCAST, 0, wdg_timeout);
-
- /* Allocate aux station and assign to it the aux queue */
- ret = iwl_mvm_allocate_int_sta(mvm, &mvm->aux_sta, BIT(mvm->aux_queue),
- NL80211_IFTYPE_UNSPECIFIED);
- 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;
-}
-
-void iwl_mvm_del_aux_sta(struct iwl_mvm *mvm)
-{
- lockdep_assert_held(&mvm->mutex);
-
- iwl_mvm_dealloc_int_sta(mvm, &mvm->aux_sta);
-}
-
-/*
- * 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_add_bcast_sta(struct iwl_mvm *mvm, struct ieee80211_vif *vif)
-{
- struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
- struct iwl_mvm_int_sta *bsta = &mvmvif->bcast_sta;
- static const u8 _baddr[] = {0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF};
- const u8 *baddr = _baddr;
-
- lockdep_assert_held(&mvm->mutex);
-
- if (vif->type == NL80211_IFTYPE_ADHOC)
- baddr = vif->bss_conf.bssid;
-
- 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 ieee80211_vif *vif)
-{
- struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
- int ret;
-
- lockdep_assert_held(&mvm->mutex);
-
- ret = iwl_mvm_rm_sta_common(mvm, mvmvif->bcast_sta.sta_id);
- if (ret)
- IWL_WARN(mvm, "Failed sending remove station\n");
- return ret;
-}
-
-int iwl_mvm_alloc_bcast_sta(struct iwl_mvm *mvm, struct ieee80211_vif *vif)
-{
- struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
- u32 qmask;
-
- lockdep_assert_held(&mvm->mutex);
-
- qmask = iwl_mvm_mac_get_queues_mask(vif);
-
- /*
- * The firmware defines the TFD queue mask to only be relevant
- * for *unicast* queues, so the multicast (CAB) queue shouldn't
- * be included.
- */
- if (vif->type == NL80211_IFTYPE_AP)
- qmask &= ~BIT(vif->cab_queue);
-
- return iwl_mvm_allocate_int_sta(mvm, &mvmvif->bcast_sta, qmask,
- ieee80211_vif_type_p2p(vif));
-}
-
-/* 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_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
- struct iwl_mvm_int_sta *bsta = &mvmvif->bcast_sta;
- int ret;
-
- lockdep_assert_held(&mvm->mutex);
-
- ret = iwl_mvm_alloc_bcast_sta(mvm, vif);
- if (ret)
- return ret;
-
- ret = iwl_mvm_send_add_bcast_sta(mvm, vif);
-
- if (ret)
- iwl_mvm_dealloc_int_sta(mvm, bsta);
-
- return ret;
-}
-
-void iwl_mvm_dealloc_bcast_sta(struct iwl_mvm *mvm, struct ieee80211_vif *vif)
-{
- struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
-
- iwl_mvm_dealloc_int_sta(mvm, &mvmvif->bcast_sta);
-}
-
-/*
- * 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 ieee80211_vif *vif)
-{
- int ret;
-
- lockdep_assert_held(&mvm->mutex);
-
- ret = iwl_mvm_send_rm_bcast_sta(mvm, vif);
-
- iwl_mvm_dealloc_bcast_sta(mvm, vif);
-
- return ret;
-}
-
-#define IWL_MAX_RX_BA_SESSIONS 16
-
-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 = iwl_mvm_sta_from_mac80211(sta);
- struct iwl_mvm_add_sta_cmd cmd = {};
- int ret;
- u32 status;
-
- lockdep_assert_held(&mvm->mutex);
-
- if (start && mvm->rx_ba_sessions >= IWL_MAX_RX_BA_SESSIONS) {
- IWL_WARN(mvm, "Not enough RX BA SESSIONS\n");
- return -ENOSPC;
- }
-
- 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;
- if (start) {
- cmd.add_immediate_ba_tid = (u8) tid;
- cmd.add_immediate_ba_ssn = cpu_to_le16(ssn);
- } else {
- cmd.remove_immediate_ba_tid = (u8) tid;
- }
- 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;
- }
-
- if (!ret) {
- if (start)
- mvm->rx_ba_sessions++;
- else if (mvm->rx_ba_sessions > 0)
- /* check that restart flow didn't zero the counter */
- mvm->rx_ba_sessions--;
- }
-
- 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 = iwl_mvm_sta_from_mac80211(sta);
- 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;
-}
-
-const u8 tid_to_mac80211_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,
-};
-
-static const u8 tid_to_ucode_ac[] = {
- AC_BE,
- AC_BK,
- AC_BK,
- AC_BE,
- AC_VI,
- AC_VI,
- AC_VO,
- 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 = iwl_mvm_sta_from_mac80211(sta);
- struct iwl_mvm_tid_data *tid_data;
- int txq_id;
- int ret;
-
- 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);
-
- spin_lock_bh(&mvmsta->lock);
-
- /* possible race condition - we entered D0i3 while starting agg */
- if (test_bit(IWL_MVM_STATUS_IN_D0I3, &mvm->status)) {
- spin_unlock_bh(&mvmsta->lock);
- IWL_ERR(mvm, "Entered D0i3 while starting Tx agg\n");
- return -EIO;
- }
-
- spin_lock_bh(&mvm->queue_info_lock);
-
- txq_id = iwl_mvm_find_free_queue(mvm, mvm->first_agg_queue,
- mvm->last_agg_queue);
- if (txq_id < 0) {
- ret = txq_id;
- spin_unlock_bh(&mvm->queue_info_lock);
- IWL_ERR(mvm, "Failed to allocate agg queue\n");
- goto release_locks;
- }
- mvm->queue_info[txq_id].setup_reserved = true;
- spin_unlock_bh(&mvm->queue_info_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;
- }
-
- ret = 0;
-
-release_locks:
- spin_unlock_bh(&mvmsta->lock);
-
- return ret;
-}
-
-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 = iwl_mvm_sta_from_mac80211(sta);
- struct iwl_mvm_tid_data *tid_data = &mvmsta->tid_data[tid];
- unsigned int wdg_timeout =
- iwl_mvm_get_wd_timeout(mvm, vif, sta->tdls, false);
- int queue, fifo, ret;
- u16 ssn;
-
- BUILD_BUG_ON((sizeof(mvmsta->agg_tids) * BITS_PER_BYTE)
- != IWL_MAX_TID_COUNT);
-
- 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;
- mvmsta->agg_tids |= BIT(tid);
- tid_data->ssn = 0xffff;
- spin_unlock_bh(&mvmsta->lock);
-
- fifo = iwl_mvm_ac_to_tx_fifo[tid_to_mac80211_ac[tid]];
-
- iwl_mvm_enable_agg_txq(mvm, queue,
- vif->hw_queue[tid_to_mac80211_ac[tid]], fifo,
- mvmsta->sta_id, tid, buf_size, ssn, wdg_timeout);
-
- ret = iwl_mvm_sta_tx_agg(mvm, sta, tid, queue, true);
- if (ret)
- return -EIO;
-
- /* No need to mark as reserved */
- spin_lock_bh(&mvm->queue_info_lock);
- mvm->queue_info[queue].setup_reserved = false;
- spin_unlock_bh(&mvm->queue_info_lock);
-
- /*
- * 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);
-
- return iwl_mvm_send_lq_cmd(mvm, &mvmsta->lq_sta.lq, 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 = iwl_mvm_sta_from_mac80211(sta);
- 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);
-
- mvmsta->agg_tids &= ~BIT(tid);
-
- /* No need to mark as reserved anymore */
- spin_lock_bh(&mvm->queue_info_lock);
- mvm->queue_info[txq_id].setup_reserved = false;
- spin_unlock_bh(&mvm->queue_info_lock);
-
- 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;
- tid_data->state = IWL_AGG_OFF;
- spin_unlock_bh(&mvmsta->lock);
-
- ieee80211_stop_tx_ba_cb_irqsafe(vif, sta->addr, tid);
-
- iwl_mvm_sta_tx_agg(mvm, sta, tid, txq_id, false);
-
- iwl_mvm_disable_txq(mvm, txq_id,
- vif->hw_queue[tid_to_mac80211_ac[tid]], tid,
- 0);
- return 0;
- 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);
-
- 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 = iwl_mvm_sta_from_mac80211(sta);
- struct iwl_mvm_tid_data *tid_data = &mvmsta->tid_data[tid];
- u16 txq_id;
- enum iwl_mvm_agg_state old_state;
-
- /*
- * 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);
- old_state = tid_data->state;
- tid_data->state = IWL_AGG_OFF;
- mvmsta->agg_tids &= ~BIT(tid);
- spin_unlock_bh(&mvmsta->lock);
-
- /* No need to mark as reserved */
- spin_lock_bh(&mvm->queue_info_lock);
- mvm->queue_info[txq_id].setup_reserved = false;
- spin_unlock_bh(&mvm->queue_info_lock);
-
- if (old_state >= IWL_AGG_ON) {
- iwl_mvm_drain_sta(mvm, mvmsta, true);
- if (iwl_mvm_flush_tx_path(mvm, BIT(txq_id), 0))
- IWL_ERR(mvm, "Couldn't flush the AGG queue\n");
- iwl_trans_wait_tx_queue_empty(mvm->trans,
- mvmsta->tfd_queue_msk);
- iwl_mvm_drain_sta(mvm, mvmsta, false);
-
- iwl_mvm_sta_tx_agg(mvm, sta, tid, txq_id, false);
-
- iwl_mvm_disable_txq(mvm, tid_data->txq_id,
- vif->hw_queue[tid_to_mac80211_ac[tid]], tid,
- 0);
- }
-
- return 0;
-}
-
-static int iwl_mvm_set_fw_key_idx(struct iwl_mvm *mvm)
-{
- int i, max = -1, max_offs = -1;
-
- lockdep_assert_held(&mvm->mutex);
-
- /* Pick the unused key offset with the highest 'deleted'
- * counter. Every time a key is deleted, all the counters
- * are incremented and the one that was just deleted is
- * reset to zero. Thus, the highest counter is the one
- * that was deleted longest ago. Pick that one.
- */
- for (i = 0; i < STA_KEY_MAX_NUM; i++) {
- if (test_bit(i, mvm->fw_key_table))
- continue;
- if (mvm->fw_key_deleted[i] > max) {
- max = mvm->fw_key_deleted[i];
- max_offs = i;
- }
- }
-
- if (max_offs < 0)
- return STA_KEY_IDX_INVALID;
-
- __set_bit(max_offs, mvm->fw_key_table);
-
- return max_offs;
-}
-
-static u8 iwl_mvm_get_key_sta_id(struct ieee80211_vif *vif,
- struct ieee80211_sta *sta)
-{
- struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
-
- if (sta) {
- struct iwl_mvm_sta *mvm_sta = iwl_mvm_sta_from_mac80211(sta);
-
- 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, bool mcast,
- u32 tkip_iv32, u16 *tkip_p1k, u32 cmd_flags)
-{
- struct iwl_mvm_add_sta_key_cmd cmd = {};
- __le16 key_flags;
- int ret;
- u32 status;
- u16 keyidx;
- int i;
- u8 sta_id = mvm_sta->sta_id;
-
- 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.tkip_rx_tsc_byte2 = tkip_iv32;
- for (i = 0; i < 5; i++)
- cmd.tkip_rx_ttak[i] = cpu_to_le16(tkip_p1k[i]);
- memcpy(cmd.key, keyconf->key, keyconf->keylen);
- break;
- case WLAN_CIPHER_SUITE_CCMP:
- key_flags |= cpu_to_le16(STA_KEY_FLG_CCM);
- memcpy(cmd.key, keyconf->key, keyconf->keylen);
- break;
- case WLAN_CIPHER_SUITE_WEP104:
- key_flags |= cpu_to_le16(STA_KEY_FLG_WEP_13BYTES);
- /* fall through */
- case WLAN_CIPHER_SUITE_WEP40:
- key_flags |= cpu_to_le16(STA_KEY_FLG_WEP);
- memcpy(cmd.key + 3, keyconf->key, keyconf->keylen);
- break;
- default:
- key_flags |= cpu_to_le16(STA_KEY_FLG_EXT);
- memcpy(cmd.key, keyconf->key, keyconf->keylen);
- }
-
- if (mcast)
- key_flags |= cpu_to_le16(STA_KEY_MULTICAST);
-
- cmd.key_offset = keyconf->hw_key_idx;
- cmd.key_flags = key_flags;
- cmd.sta_id = sta_id;
-
- status = ADD_STA_SUCCESS;
- if (cmd_flags & CMD_ASYNC)
- ret = iwl_mvm_send_cmd_pdu(mvm, ADD_STA_KEY, CMD_ASYNC,
- sizeof(cmd), &cmd);
- else
- ret = iwl_mvm_send_cmd_pdu_status(mvm, ADD_STA_KEY, sizeof(cmd),
- &cmd, &status);
-
- 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_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, 0,
- 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 = iwl_mvm_vif_from_mac80211(vif);
-
- 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;
-}
-
-static int __iwl_mvm_set_sta_key(struct iwl_mvm *mvm,
- struct ieee80211_vif *vif,
- struct ieee80211_sta *sta,
- struct ieee80211_key_conf *keyconf,
- bool mcast)
-{
- struct iwl_mvm_sta *mvm_sta = iwl_mvm_sta_from_mac80211(sta);
- int ret;
- const u8 *addr;
- struct ieee80211_key_seq seq;
- u16 p1k[5];
-
- 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, mcast,
- seq.tkip.iv32, p1k, 0);
- break;
- case WLAN_CIPHER_SUITE_CCMP:
- case WLAN_CIPHER_SUITE_WEP40:
- case WLAN_CIPHER_SUITE_WEP104:
- ret = iwl_mvm_send_sta_key(mvm, mvm_sta, keyconf, mcast,
- 0, NULL, 0);
- break;
- default:
- ret = iwl_mvm_send_sta_key(mvm, mvm_sta, keyconf, mcast,
- 0, NULL, 0);
- }
-
- return ret;
-}
-
-static int __iwl_mvm_remove_sta_key(struct iwl_mvm *mvm, u8 sta_id,
- struct ieee80211_key_conf *keyconf,
- bool mcast)
-{
- struct iwl_mvm_add_sta_key_cmd cmd = {};
- __le16 key_flags;
- int ret;
- u32 status;
-
- 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 (mcast)
- key_flags |= cpu_to_le16(STA_KEY_MULTICAST);
-
- cmd.key_flags = key_flags;
- cmd.key_offset = keyconf->hw_key_idx;
- cmd.sta_id = sta_id;
-
- status = ADD_STA_SUCCESS;
- ret = iwl_mvm_send_cmd_pdu_status(mvm, ADD_STA_KEY, 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;
-}
-
-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)
-{
- bool mcast = !(keyconf->flags & IEEE80211_KEY_FLAG_PAIRWISE);
- u8 sta_id;
- int ret;
- static const u8 __maybe_unused zero_addr[ETH_ALEN] = {0};
-
- 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;
- }
- }
-
- if (WARN_ON_ONCE(iwl_mvm_sta_from_mac80211(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;
- }
-
- ret = __iwl_mvm_set_sta_key(mvm, vif, sta, keyconf, mcast);
- if (ret) {
- __clear_bit(keyconf->hw_key_idx, mvm->fw_key_table);
- goto end;
- }
-
- /*
- * For WEP, the same key is used for multicast and unicast. Upload it
- * again, using the same key offset, and now pointing the other one
- * to the same key slot (offset).
- * If this fails, remove the original as well.
- */
- if (keyconf->cipher == WLAN_CIPHER_SUITE_WEP40 ||
- keyconf->cipher == WLAN_CIPHER_SUITE_WEP104) {
- ret = __iwl_mvm_set_sta_key(mvm, vif, sta, keyconf, !mcast);
- if (ret) {
- __clear_bit(keyconf->hw_key_idx, mvm->fw_key_table);
- __iwl_mvm_remove_sta_key(mvm, sta_id, keyconf, mcast);
- }
- }
-
-end:
- IWL_DEBUG_WEP(mvm, "key: cipher=%x len=%d idx=%d sta=%pM ret=%d\n",
- keyconf->cipher, keyconf->keylen, keyconf->keyidx,
- sta ? sta->addr : zero_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)
-{
- bool mcast = !(keyconf->flags & IEEE80211_KEY_FLAG_PAIRWISE);
- u8 sta_id;
- int ret, i;
-
- 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);
-
- if (!__test_and_clear_bit(keyconf->hw_key_idx, mvm->fw_key_table)) {
- IWL_ERR(mvm, "offset %d not used in fw key table.\n",
- keyconf->hw_key_idx);
- return -ENOENT;
- }
-
- /* track which key was deleted last */
- for (i = 0; i < STA_KEY_MAX_NUM; i++) {
- if (mvm->fw_key_deleted[i] < U8_MAX)
- mvm->fw_key_deleted[i]++;
- }
- mvm->fw_key_deleted[keyconf->hw_key_idx] = 0;
-
- 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;
- }
- }
-
- if (WARN_ON_ONCE(iwl_mvm_sta_from_mac80211(sta)->vif != vif))
- return -EINVAL;
-
- ret = __iwl_mvm_remove_sta_key(mvm, sta_id, keyconf, mcast);
- if (ret)
- return ret;
-
- /* delete WEP key twice to get rid of (now useless) offset */
- if (keyconf->cipher == WLAN_CIPHER_SUITE_WEP40 ||
- keyconf->cipher == WLAN_CIPHER_SUITE_WEP104)
- ret = __iwl_mvm_remove_sta_key(mvm, sta_id, keyconf, !mcast);
-
- 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);
- bool mcast = !(keyconf->flags & IEEE80211_KEY_FLAG_PAIRWISE);
-
- 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 = iwl_mvm_sta_from_mac80211(sta);
- iwl_mvm_send_sta_key(mvm, mvm_sta, keyconf, mcast,
- 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 = iwl_mvm_sta_from_mac80211(sta);
- 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 tids, bool more_data,
- bool agg)
-{
- struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta);
- 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),
- };
- int tid, ret;
- unsigned long _tids = tids;
-
- /* convert TIDs to ACs - we don't support TSPEC so that's OK
- * Note that this field is reserved and unused by firmware not
- * supporting GO uAPSD, so it's safe to always do this.
- */
- for_each_set_bit(tid, &_tids, IWL_MAX_TID_COUNT)
- cmd.awake_acs |= BIT(tid_to_ucode_ac[tid]);
-
- /* If we're releasing frames from aggregation queues then check if the
- * all queues combined that we're releasing frames from have
- * - more frames than the service period, in which case more_data
- * needs to be set
- * - fewer than 'cnt' frames, in which case we need to adjust the
- * firmware command (but do that unconditionally)
- */
- if (agg) {
- int remaining = cnt;
-
- spin_lock_bh(&mvmsta->lock);
- for_each_set_bit(tid, &_tids, IWL_MAX_TID_COUNT) {
- struct iwl_mvm_tid_data *tid_data;
- u16 n_queued;
-
- tid_data = &mvmsta->tid_data[tid];
- if (WARN(tid_data->state != IWL_AGG_ON &&
- tid_data->state != IWL_EMPTYING_HW_QUEUE_DELBA,
- "TID %d state is %d\n",
- tid, tid_data->state)) {
- spin_unlock_bh(&mvmsta->lock);
- ieee80211_sta_eosp(sta);
- return;
- }
-
- n_queued = iwl_mvm_tid_queued(tid_data);
- if (n_queued > remaining) {
- more_data = true;
- remaining = 0;
- break;
- }
- remaining -= n_queued;
- }
- spin_unlock_bh(&mvmsta->lock);
-
- cmd.sleep_tx_count = cpu_to_le16(cnt - remaining);
- if (WARN_ON(cnt - remaining == 0)) {
- ieee80211_sta_eosp(sta);
- return;
- }
- }
-
- /* Note: this is ignored by firmware not supporting GO uAPSD */
- if (more_data)
- cmd.sleep_state_flags |= cpu_to_le16(STA_SLEEP_STATE_MOREDATA);
-
- if (reason == IEEE80211_FRAME_RELEASE_PSPOLL) {
- mvmsta->next_status_eosp = true;
- cmd.sleep_state_flags |= cpu_to_le16(STA_SLEEP_STATE_PS_POLL);
- } else {
- cmd.sleep_state_flags |= cpu_to_le16(STA_SLEEP_STATE_UAPSD);
- }
-
- 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_rx_eosp_notif(struct iwl_mvm *mvm,
- struct iwl_rx_cmd_buffer *rxb)
-{
- struct iwl_rx_packet *pkt = rxb_addr(rxb);
- struct iwl_mvm_eosp_notification *notif = (void *)pkt->data;
- struct ieee80211_sta *sta;
- u32 sta_id = le32_to_cpu(notif->sta_id);
-
- if (WARN_ON_ONCE(sta_id >= IWL_MVM_STATION_COUNT))
- return;
-
- rcu_read_lock();
- sta = rcu_dereference(mvm->fw_id_to_mac_id[sta_id]);
- if (!IS_ERR_OR_NULL(sta))
- ieee80211_sta_eosp(sta);
- rcu_read_unlock();
-}
-
-void iwl_mvm_sta_modify_disable_tx(struct iwl_mvm *mvm,
- struct iwl_mvm_sta *mvmsta, bool disable)
-{
- struct iwl_mvm_add_sta_cmd cmd = {
- .add_modify = STA_MODE_MODIFY,
- .sta_id = mvmsta->sta_id,
- .station_flags = disable ? cpu_to_le32(STA_FLG_DISABLE_TX) : 0,
- .station_flags_msk = cpu_to_le32(STA_FLG_DISABLE_TX),
- .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_disable_tx_ap(struct iwl_mvm *mvm,
- struct ieee80211_sta *sta,
- bool disable)
-{
- struct iwl_mvm_sta *mvm_sta = iwl_mvm_sta_from_mac80211(sta);
-
- spin_lock_bh(&mvm_sta->lock);
-
- if (mvm_sta->disable_tx == disable) {
- spin_unlock_bh(&mvm_sta->lock);
- return;
- }
-
- mvm_sta->disable_tx = disable;
-
- /*
- * Tell mac80211 to start/stop queuing tx for this station,
- * but don't stop queuing if there are still pending frames
- * for this station.
- */
- if (disable || !atomic_read(&mvm->pending_frames[mvm_sta->sta_id]))
- ieee80211_sta_block_awake(mvm->hw, sta, disable);
-
- iwl_mvm_sta_modify_disable_tx(mvm, mvm_sta, disable);
-
- spin_unlock_bh(&mvm_sta->lock);
-}
-
-void iwl_mvm_modify_all_sta_disable_tx(struct iwl_mvm *mvm,
- struct iwl_mvm_vif *mvmvif,
- bool disable)
-{
- struct ieee80211_sta *sta;
- struct iwl_mvm_sta *mvm_sta;
- int i;
-
- lockdep_assert_held(&mvm->mutex);
-
- /* Block/unblock all the stations of the given mvmvif */
- for (i = 0; i < IWL_MVM_STATION_COUNT; i++) {
- sta = rcu_dereference_protected(mvm->fw_id_to_mac_id[i],
- lockdep_is_held(&mvm->mutex));
- if (IS_ERR_OR_NULL(sta))
- continue;
-
- mvm_sta = iwl_mvm_sta_from_mac80211(sta);
- if (mvm_sta->mac_id_n_color !=
- FW_CMD_ID_AND_COLOR(mvmvif->id, mvmvif->color))
- continue;
-
- iwl_mvm_sta_modify_disable_tx_ap(mvm, sta, disable);
- }
-}
-
-void iwl_mvm_csa_client_absent(struct iwl_mvm *mvm, struct ieee80211_vif *vif)
-{
- struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
- struct iwl_mvm_sta *mvmsta;
-
- rcu_read_lock();
-
- mvmsta = iwl_mvm_sta_from_staid_rcu(mvm, mvmvif->ap_sta_id);
-
- if (!WARN_ON(!mvmsta))
- iwl_mvm_sta_modify_disable_tx(mvm, mvmsta, true);
-
- rcu_read_unlock();
-}
projects / cascardo / linux.git / blobdiff