+++ /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 - 2014 Intel Corporation. All rights reserved.
- * Copyright(c) 2013 - 2014 Intel Mobile Communications GmbH
- * Copyright(c) 2015 Intel Deutschland 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 - 2014 Intel Corporation. All rights reserved.
- * Copyright(c) 2013 - 2014 Intel Mobile Communications GmbH
- * Copyright(c) 2015 Intel Deutschland 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 <linux/etherdevice.h>
-#include <net/mac80211.h>
-#include "iwl-io.h"
-#include "iwl-prph.h"
-#include "fw-api.h"
-#include "mvm.h"
-#include "time-event.h"
-
-const u8 iwl_mvm_ac_to_tx_fifo[] = {
- IWL_MVM_TX_FIFO_VO,
- IWL_MVM_TX_FIFO_VI,
- IWL_MVM_TX_FIFO_BE,
- IWL_MVM_TX_FIFO_BK,
-};
-
-struct iwl_mvm_mac_iface_iterator_data {
- struct iwl_mvm *mvm;
- struct ieee80211_vif *vif;
- unsigned long available_mac_ids[BITS_TO_LONGS(NUM_MAC_INDEX_DRIVER)];
- unsigned long available_tsf_ids[BITS_TO_LONGS(NUM_TSF_IDS)];
- enum iwl_tsf_id preferred_tsf;
- bool found_vif;
-};
-
-struct iwl_mvm_hw_queues_iface_iterator_data {
- struct ieee80211_vif *exclude_vif;
- unsigned long used_hw_queues;
-};
-
-static void iwl_mvm_mac_tsf_id_iter(void *_data, u8 *mac,
- struct ieee80211_vif *vif)
-{
- struct iwl_mvm_mac_iface_iterator_data *data = _data;
- struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
- u16 min_bi;
-
- /* Skip the interface for which we are trying to assign a tsf_id */
- if (vif == data->vif)
- return;
-
- /*
- * The TSF is a hardware/firmware resource, there are 4 and
- * the driver should assign and free them as needed. However,
- * there are cases where 2 MACs should share the same TSF ID
- * for the purpose of clock sync, an optimization to avoid
- * clock drift causing overlapping TBTTs/DTIMs for a GO and
- * client in the system.
- *
- * The firmware will decide according to the MAC type which
- * will be the master and slave. Clients that need to sync
- * with a remote station will be the master, and an AP or GO
- * will be the slave.
- *
- * Depending on the new interface type it can be slaved to
- * or become the master of an existing interface.
- */
- switch (data->vif->type) {
- case NL80211_IFTYPE_STATION:
- /*
- * The new interface is a client, so if the one we're iterating
- * is an AP, and the beacon interval of the AP is a multiple or
- * divisor of the beacon interval of the client, the same TSF
- * should be used to avoid drift between the new client and
- * existing AP. The existing AP will get drift updates from the
- * new client context in this case.
- */
- if (vif->type != NL80211_IFTYPE_AP ||
- data->preferred_tsf != NUM_TSF_IDS ||
- !test_bit(mvmvif->tsf_id, data->available_tsf_ids))
- break;
-
- min_bi = min(data->vif->bss_conf.beacon_int,
- vif->bss_conf.beacon_int);
-
- if (!min_bi)
- break;
-
- if ((data->vif->bss_conf.beacon_int -
- vif->bss_conf.beacon_int) % min_bi == 0) {
- data->preferred_tsf = mvmvif->tsf_id;
- return;
- }
- break;
-
- case NL80211_IFTYPE_AP:
- /*
- * The new interface is AP/GO, so if its beacon interval is a
- * multiple or a divisor of the beacon interval of an existing
- * interface, it should get drift updates from an existing
- * client or use the same TSF as an existing GO. There's no
- * drift between TSFs internally but if they used different
- * TSFs then a new client MAC could update one of them and
- * cause drift that way.
- */
- if ((vif->type != NL80211_IFTYPE_AP &&
- vif->type != NL80211_IFTYPE_STATION) ||
- data->preferred_tsf != NUM_TSF_IDS ||
- !test_bit(mvmvif->tsf_id, data->available_tsf_ids))
- break;
-
- min_bi = min(data->vif->bss_conf.beacon_int,
- vif->bss_conf.beacon_int);
-
- if (!min_bi)
- break;
-
- if ((data->vif->bss_conf.beacon_int -
- vif->bss_conf.beacon_int) % min_bi == 0) {
- data->preferred_tsf = mvmvif->tsf_id;
- return;
- }
- break;
- default:
- /*
- * For all other interface types there's no need to
- * take drift into account. Either they're exclusive
- * like IBSS and monitor, or we don't care much about
- * their TSF (like P2P Device), but we won't be able
- * to share the TSF resource.
- */
- break;
- }
-
- /*
- * Unless we exited above, we can't share the TSF resource
- * that the virtual interface we're iterating over is using
- * with the new one, so clear the available bit and if this
- * was the preferred one, reset that as well.
- */
- __clear_bit(mvmvif->tsf_id, data->available_tsf_ids);
-
- if (data->preferred_tsf == mvmvif->tsf_id)
- data->preferred_tsf = NUM_TSF_IDS;
-}
-
-/*
- * Get the mask of the queues used by the vif
- */
-u32 iwl_mvm_mac_get_queues_mask(struct ieee80211_vif *vif)
-{
- u32 qmask = 0, ac;
-
- if (vif->type == NL80211_IFTYPE_P2P_DEVICE)
- return BIT(IWL_MVM_OFFCHANNEL_QUEUE);
-
- for (ac = 0; ac < IEEE80211_NUM_ACS; ac++) {
- if (vif->hw_queue[ac] != IEEE80211_INVAL_HW_QUEUE)
- qmask |= BIT(vif->hw_queue[ac]);
- }
-
- if (vif->type == NL80211_IFTYPE_AP)
- qmask |= BIT(vif->cab_queue);
-
- return qmask;
-}
-
-static void iwl_mvm_iface_hw_queues_iter(void *_data, u8 *mac,
- struct ieee80211_vif *vif)
-{
- struct iwl_mvm_hw_queues_iface_iterator_data *data = _data;
-
- /* exclude the given vif */
- if (vif == data->exclude_vif)
- return;
-
- data->used_hw_queues |= iwl_mvm_mac_get_queues_mask(vif);
-}
-
-static void iwl_mvm_mac_sta_hw_queues_iter(void *_data,
- struct ieee80211_sta *sta)
-{
- struct iwl_mvm_hw_queues_iface_iterator_data *data = _data;
- struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta);
-
- /* Mark the queues used by the sta */
- data->used_hw_queues |= mvmsta->tfd_queue_msk;
-}
-
-unsigned long iwl_mvm_get_used_hw_queues(struct iwl_mvm *mvm,
- struct ieee80211_vif *exclude_vif)
-{
- u8 sta_id;
- struct iwl_mvm_hw_queues_iface_iterator_data data = {
- .exclude_vif = exclude_vif,
- .used_hw_queues =
- BIT(IWL_MVM_OFFCHANNEL_QUEUE) |
- BIT(mvm->aux_queue) |
- BIT(IWL_MVM_CMD_QUEUE),
- };
-
- lockdep_assert_held(&mvm->mutex);
-
- /* mark all VIF used hw queues */
- ieee80211_iterate_active_interfaces_atomic(
- mvm->hw, IEEE80211_IFACE_ITER_RESUME_ALL,
- iwl_mvm_iface_hw_queues_iter, &data);
-
- /* don't assign the same hw queues as TDLS stations */
- ieee80211_iterate_stations_atomic(mvm->hw,
- iwl_mvm_mac_sta_hw_queues_iter,
- &data);
-
- /*
- * Some TDLS stations may be removed but are in the process of being
- * drained. Don't touch their queues.
- */
- for_each_set_bit(sta_id, mvm->sta_drained, IWL_MVM_STATION_COUNT)
- data.used_hw_queues |= mvm->tfd_drained[sta_id];
-
- return data.used_hw_queues;
-}
-
-static void iwl_mvm_mac_iface_iterator(void *_data, u8 *mac,
- struct ieee80211_vif *vif)
-{
- struct iwl_mvm_mac_iface_iterator_data *data = _data;
- struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
-
- /* Iterator may already find the interface being added -- skip it */
- if (vif == data->vif) {
- data->found_vif = true;
- return;
- }
-
- /* Mark MAC IDs as used by clearing the available bit, and
- * (below) mark TSFs as used if their existing use is not
- * compatible with the new interface type.
- * No locking or atomic bit operations are needed since the
- * data is on the stack of the caller function.
- */
- __clear_bit(mvmvif->id, data->available_mac_ids);
-
- /* find a suitable tsf_id */
- iwl_mvm_mac_tsf_id_iter(_data, mac, vif);
-}
-
-void iwl_mvm_mac_ctxt_recalc_tsf_id(struct iwl_mvm *mvm,
- struct ieee80211_vif *vif)
-{
- struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
- struct iwl_mvm_mac_iface_iterator_data data = {
- .mvm = mvm,
- .vif = vif,
- .available_tsf_ids = { (1 << NUM_TSF_IDS) - 1 },
- /* no preference yet */
- .preferred_tsf = NUM_TSF_IDS,
- };
-
- ieee80211_iterate_active_interfaces_atomic(
- mvm->hw, IEEE80211_IFACE_ITER_RESUME_ALL,
- iwl_mvm_mac_tsf_id_iter, &data);
-
- if (data.preferred_tsf != NUM_TSF_IDS)
- mvmvif->tsf_id = data.preferred_tsf;
- else if (!test_bit(mvmvif->tsf_id, data.available_tsf_ids))
- mvmvif->tsf_id = find_first_bit(data.available_tsf_ids,
- NUM_TSF_IDS);
-}
-
-static int iwl_mvm_mac_ctxt_allocate_resources(struct iwl_mvm *mvm,
- struct ieee80211_vif *vif)
-{
- struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
- struct iwl_mvm_mac_iface_iterator_data data = {
- .mvm = mvm,
- .vif = vif,
- .available_mac_ids = { (1 << NUM_MAC_INDEX_DRIVER) - 1 },
- .available_tsf_ids = { (1 << NUM_TSF_IDS) - 1 },
- /* no preference yet */
- .preferred_tsf = NUM_TSF_IDS,
- .found_vif = false,
- };
- u32 ac;
- int ret, i;
- unsigned long used_hw_queues;
-
- /*
- * Allocate a MAC ID and a TSF for this MAC, along with the queues
- * and other resources.
- */
-
- /*
- * Before the iterator, we start with all MAC IDs and TSFs available.
- *
- * During iteration, all MAC IDs are cleared that are in use by other
- * virtual interfaces, and all TSF IDs are cleared that can't be used
- * by this new virtual interface because they're used by an interface
- * that can't share it with the new one.
- * At the same time, we check if there's a preferred TSF in the case
- * that we should share it with another interface.
- */
-
- /* Currently, MAC ID 0 should be used only for the managed/IBSS vif */
- switch (vif->type) {
- case NL80211_IFTYPE_ADHOC:
- break;
- case NL80211_IFTYPE_STATION:
- if (!vif->p2p)
- break;
- /* fall through */
- default:
- __clear_bit(0, data.available_mac_ids);
- }
-
- ieee80211_iterate_active_interfaces_atomic(
- mvm->hw, IEEE80211_IFACE_ITER_RESUME_ALL,
- iwl_mvm_mac_iface_iterator, &data);
-
- used_hw_queues = iwl_mvm_get_used_hw_queues(mvm, vif);
-
- /*
- * In the case we're getting here during resume, it's similar to
- * firmware restart, and with RESUME_ALL the iterator will find
- * the vif being added already.
- * We don't want to reassign any IDs in either case since doing
- * so would probably assign different IDs (as interfaces aren't
- * necessarily added in the same order), but the old IDs were
- * preserved anyway, so skip ID assignment for both resume and
- * recovery.
- */
- if (data.found_vif)
- return 0;
-
- /* Therefore, in recovery, we can't get here */
- if (WARN_ON_ONCE(test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status)))
- return -EBUSY;
-
- mvmvif->id = find_first_bit(data.available_mac_ids,
- NUM_MAC_INDEX_DRIVER);
- if (mvmvif->id == NUM_MAC_INDEX_DRIVER) {
- IWL_ERR(mvm, "Failed to init MAC context - no free ID!\n");
- ret = -EIO;
- goto exit_fail;
- }
-
- if (data.preferred_tsf != NUM_TSF_IDS)
- mvmvif->tsf_id = data.preferred_tsf;
- else
- mvmvif->tsf_id = find_first_bit(data.available_tsf_ids,
- NUM_TSF_IDS);
- if (mvmvif->tsf_id == NUM_TSF_IDS) {
- IWL_ERR(mvm, "Failed to init MAC context - no free TSF!\n");
- ret = -EIO;
- goto exit_fail;
- }
-
- mvmvif->color = 0;
-
- INIT_LIST_HEAD(&mvmvif->time_event_data.list);
- mvmvif->time_event_data.id = TE_MAX;
-
- /* No need to allocate data queues to P2P Device MAC.*/
- if (vif->type == NL80211_IFTYPE_P2P_DEVICE) {
- for (ac = 0; ac < IEEE80211_NUM_ACS; ac++)
- vif->hw_queue[ac] = IEEE80211_INVAL_HW_QUEUE;
-
- return 0;
- }
-
- /* 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 queue\n");
- ret = -EIO;
- goto exit_fail;
- }
-
- __set_bit(queue, &used_hw_queues);
- vif->hw_queue[ac] = queue;
- }
-
- /* Allocate the CAB queue for softAP and GO interfaces */
- if (vif->type == NL80211_IFTYPE_AP) {
- 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 cab queue\n");
- ret = -EIO;
- goto exit_fail;
- }
-
- vif->cab_queue = queue;
- } else {
- vif->cab_queue = IEEE80211_INVAL_HW_QUEUE;
- }
-
- mvmvif->bcast_sta.sta_id = IWL_MVM_STATION_COUNT;
- mvmvif->ap_sta_id = IWL_MVM_STATION_COUNT;
-
- for (i = 0; i < NUM_IWL_MVM_SMPS_REQ; i++)
- mvmvif->smps_requests[i] = IEEE80211_SMPS_AUTOMATIC;
-
- return 0;
-
-exit_fail:
- memset(mvmvif, 0, sizeof(struct iwl_mvm_vif));
- memset(vif->hw_queue, IEEE80211_INVAL_HW_QUEUE, sizeof(vif->hw_queue));
- vif->cab_queue = IEEE80211_INVAL_HW_QUEUE;
- return ret;
-}
-
-int iwl_mvm_mac_ctxt_init(struct iwl_mvm *mvm, struct ieee80211_vif *vif)
-{
- unsigned int wdg_timeout =
- iwl_mvm_get_wd_timeout(mvm, vif, false, false);
- u32 ac;
- int ret;
-
- lockdep_assert_held(&mvm->mutex);
-
- ret = iwl_mvm_mac_ctxt_allocate_resources(mvm, vif);
- if (ret)
- return ret;
-
- switch (vif->type) {
- case NL80211_IFTYPE_P2P_DEVICE:
- iwl_mvm_enable_ac_txq(mvm, IWL_MVM_OFFCHANNEL_QUEUE,
- IWL_MVM_OFFCHANNEL_QUEUE,
- IWL_MVM_TX_FIFO_VO, 0, wdg_timeout);
- break;
- case NL80211_IFTYPE_AP:
- iwl_mvm_enable_ac_txq(mvm, vif->cab_queue, vif->cab_queue,
- IWL_MVM_TX_FIFO_MCAST, 0, wdg_timeout);
- /* fall through */
- default:
- for (ac = 0; ac < IEEE80211_NUM_ACS; ac++)
- iwl_mvm_enable_ac_txq(mvm, vif->hw_queue[ac],
- vif->hw_queue[ac],
- iwl_mvm_ac_to_tx_fifo[ac], 0,
- wdg_timeout);
- break;
- }
-
- return 0;
-}
-
-void iwl_mvm_mac_ctxt_release(struct iwl_mvm *mvm, struct ieee80211_vif *vif)
-{
- int ac;
-
- lockdep_assert_held(&mvm->mutex);
-
- switch (vif->type) {
- case NL80211_IFTYPE_P2P_DEVICE:
- iwl_mvm_disable_txq(mvm, IWL_MVM_OFFCHANNEL_QUEUE,
- IWL_MVM_OFFCHANNEL_QUEUE, IWL_MAX_TID_COUNT,
- 0);
- break;
- case NL80211_IFTYPE_AP:
- iwl_mvm_disable_txq(mvm, vif->cab_queue, vif->cab_queue,
- IWL_MAX_TID_COUNT, 0);
- /* fall through */
- default:
- for (ac = 0; ac < IEEE80211_NUM_ACS; ac++)
- iwl_mvm_disable_txq(mvm, vif->hw_queue[ac],
- vif->hw_queue[ac],
- IWL_MAX_TID_COUNT, 0);
- }
-}
-
-static void iwl_mvm_ack_rates(struct iwl_mvm *mvm,
- struct ieee80211_vif *vif,
- enum ieee80211_band band,
- u8 *cck_rates, u8 *ofdm_rates)
-{
- struct ieee80211_supported_band *sband;
- unsigned long basic = vif->bss_conf.basic_rates;
- int lowest_present_ofdm = 100;
- int lowest_present_cck = 100;
- u8 cck = 0;
- u8 ofdm = 0;
- int i;
-
- sband = mvm->hw->wiphy->bands[band];
-
- for_each_set_bit(i, &basic, BITS_PER_LONG) {
- int hw = sband->bitrates[i].hw_value;
- if (hw >= IWL_FIRST_OFDM_RATE) {
- ofdm |= BIT(hw - IWL_FIRST_OFDM_RATE);
- if (lowest_present_ofdm > hw)
- lowest_present_ofdm = hw;
- } else {
- BUILD_BUG_ON(IWL_FIRST_CCK_RATE != 0);
-
- cck |= BIT(hw);
- if (lowest_present_cck > hw)
- lowest_present_cck = hw;
- }
- }
-
- /*
- * Now we've got the basic rates as bitmaps in the ofdm and cck
- * variables. This isn't sufficient though, as there might not
- * be all the right rates in the bitmap. E.g. if the only basic
- * rates are 5.5 Mbps and 11 Mbps, we still need to add 1 Mbps
- * and 6 Mbps because the 802.11-2007 standard says in 9.6:
- *
- * [...] a STA responding to a received frame shall transmit
- * its Control Response frame [...] at the highest rate in the
- * BSSBasicRateSet parameter that is less than or equal to the
- * rate of the immediately previous frame in the frame exchange
- * sequence ([...]) and that is of the same modulation class
- * ([...]) as the received frame. If no rate contained in the
- * BSSBasicRateSet parameter meets these conditions, then the
- * control frame sent in response to a received frame shall be
- * transmitted at the highest mandatory rate of the PHY that is
- * less than or equal to the rate of the received frame, and
- * that is of the same modulation class as the received frame.
- *
- * As a consequence, we need to add all mandatory rates that are
- * lower than all of the basic rates to these bitmaps.
- */
-
- if (IWL_RATE_24M_INDEX < lowest_present_ofdm)
- ofdm |= IWL_RATE_BIT_MSK(24) >> IWL_FIRST_OFDM_RATE;
- if (IWL_RATE_12M_INDEX < lowest_present_ofdm)
- ofdm |= IWL_RATE_BIT_MSK(12) >> IWL_FIRST_OFDM_RATE;
- /* 6M already there or needed so always add */
- ofdm |= IWL_RATE_BIT_MSK(6) >> IWL_FIRST_OFDM_RATE;
-
- /*
- * CCK is a bit more complex with DSSS vs. HR/DSSS vs. ERP.
- * Note, however:
- * - if no CCK rates are basic, it must be ERP since there must
- * be some basic rates at all, so they're OFDM => ERP PHY
- * (or we're in 5 GHz, and the cck bitmap will never be used)
- * - if 11M is a basic rate, it must be ERP as well, so add 5.5M
- * - if 5.5M is basic, 1M and 2M are mandatory
- * - if 2M is basic, 1M is mandatory
- * - if 1M is basic, that's the only valid ACK rate.
- * As a consequence, it's not as complicated as it sounds, just add
- * any lower rates to the ACK rate bitmap.
- */
- if (IWL_RATE_11M_INDEX < lowest_present_cck)
- cck |= IWL_RATE_BIT_MSK(11) >> IWL_FIRST_CCK_RATE;
- if (IWL_RATE_5M_INDEX < lowest_present_cck)
- cck |= IWL_RATE_BIT_MSK(5) >> IWL_FIRST_CCK_RATE;
- if (IWL_RATE_2M_INDEX < lowest_present_cck)
- cck |= IWL_RATE_BIT_MSK(2) >> IWL_FIRST_CCK_RATE;
- /* 1M already there or needed so always add */
- cck |= IWL_RATE_BIT_MSK(1) >> IWL_FIRST_CCK_RATE;
-
- *cck_rates = cck;
- *ofdm_rates = ofdm;
-}
-
-static void iwl_mvm_mac_ctxt_set_ht_flags(struct iwl_mvm *mvm,
- struct ieee80211_vif *vif,
- struct iwl_mac_ctx_cmd *cmd)
-{
- /* for both sta and ap, ht_operation_mode hold the protection_mode */
- u8 protection_mode = vif->bss_conf.ht_operation_mode &
- IEEE80211_HT_OP_MODE_PROTECTION;
- /* The fw does not distinguish between ht and fat */
- u32 ht_flag = MAC_PROT_FLG_HT_PROT | MAC_PROT_FLG_FAT_PROT;
-
- IWL_DEBUG_RATE(mvm, "protection mode set to %d\n", protection_mode);
- /*
- * See section 9.23.3.1 of IEEE 80211-2012.
- * Nongreenfield HT STAs Present is not supported.
- */
- switch (protection_mode) {
- case IEEE80211_HT_OP_MODE_PROTECTION_NONE:
- break;
- case IEEE80211_HT_OP_MODE_PROTECTION_NONMEMBER:
- case IEEE80211_HT_OP_MODE_PROTECTION_NONHT_MIXED:
- cmd->protection_flags |= cpu_to_le32(ht_flag);
- break;
- case IEEE80211_HT_OP_MODE_PROTECTION_20MHZ:
- /* Protect when channel wider than 20MHz */
- if (vif->bss_conf.chandef.width > NL80211_CHAN_WIDTH_20)
- cmd->protection_flags |= cpu_to_le32(ht_flag);
- break;
- default:
- IWL_ERR(mvm, "Illegal protection mode %d\n",
- protection_mode);
- break;
- }
-}
-
-static void iwl_mvm_mac_ctxt_cmd_common(struct iwl_mvm *mvm,
- struct ieee80211_vif *vif,
- struct iwl_mac_ctx_cmd *cmd,
- const u8 *bssid_override,
- u32 action)
-{
- struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
- struct ieee80211_chanctx_conf *chanctx;
- bool ht_enabled = !!(vif->bss_conf.ht_operation_mode &
- IEEE80211_HT_OP_MODE_PROTECTION);
- u8 cck_ack_rates, ofdm_ack_rates;
- const u8 *bssid = bssid_override ?: vif->bss_conf.bssid;
- int i;
-
- cmd->id_and_color = cpu_to_le32(FW_CMD_ID_AND_COLOR(mvmvif->id,
- mvmvif->color));
- cmd->action = cpu_to_le32(action);
-
- switch (vif->type) {
- case NL80211_IFTYPE_STATION:
- if (vif->p2p)
- cmd->mac_type = cpu_to_le32(FW_MAC_TYPE_P2P_STA);
- else
- cmd->mac_type = cpu_to_le32(FW_MAC_TYPE_BSS_STA);
- break;
- case NL80211_IFTYPE_AP:
- cmd->mac_type = cpu_to_le32(FW_MAC_TYPE_GO);
- break;
- case NL80211_IFTYPE_MONITOR:
- cmd->mac_type = cpu_to_le32(FW_MAC_TYPE_LISTENER);
- break;
- case NL80211_IFTYPE_P2P_DEVICE:
- cmd->mac_type = cpu_to_le32(FW_MAC_TYPE_P2P_DEVICE);
- break;
- case NL80211_IFTYPE_ADHOC:
- cmd->mac_type = cpu_to_le32(FW_MAC_TYPE_IBSS);
- break;
- default:
- WARN_ON_ONCE(1);
- }
-
- cmd->tsf_id = cpu_to_le32(mvmvif->tsf_id);
-
- memcpy(cmd->node_addr, vif->addr, ETH_ALEN);
-
- if (bssid)
- memcpy(cmd->bssid_addr, bssid, ETH_ALEN);
- else
- eth_broadcast_addr(cmd->bssid_addr);
-
- rcu_read_lock();
- chanctx = rcu_dereference(vif->chanctx_conf);
- iwl_mvm_ack_rates(mvm, vif, chanctx ? chanctx->def.chan->band
- : IEEE80211_BAND_2GHZ,
- &cck_ack_rates, &ofdm_ack_rates);
- rcu_read_unlock();
-
- cmd->cck_rates = cpu_to_le32((u32)cck_ack_rates);
- cmd->ofdm_rates = cpu_to_le32((u32)ofdm_ack_rates);
-
- cmd->cck_short_preamble =
- cpu_to_le32(vif->bss_conf.use_short_preamble ?
- MAC_FLG_SHORT_PREAMBLE : 0);
- cmd->short_slot =
- cpu_to_le32(vif->bss_conf.use_short_slot ?
- MAC_FLG_SHORT_SLOT : 0);
-
- for (i = 0; i < IEEE80211_NUM_ACS; i++) {
- u8 txf = iwl_mvm_ac_to_tx_fifo[i];
-
- cmd->ac[txf].cw_min =
- cpu_to_le16(mvmvif->queue_params[i].cw_min);
- cmd->ac[txf].cw_max =
- cpu_to_le16(mvmvif->queue_params[i].cw_max);
- cmd->ac[txf].edca_txop =
- cpu_to_le16(mvmvif->queue_params[i].txop * 32);
- cmd->ac[txf].aifsn = mvmvif->queue_params[i].aifs;
- cmd->ac[txf].fifos_mask = BIT(txf);
- }
-
- /* in AP mode, the MCAST FIFO takes the EDCA params from VO */
- if (vif->type == NL80211_IFTYPE_AP)
- cmd->ac[IWL_MVM_TX_FIFO_VO].fifos_mask |=
- BIT(IWL_MVM_TX_FIFO_MCAST);
-
- if (vif->bss_conf.qos)
- cmd->qos_flags |= cpu_to_le32(MAC_QOS_FLG_UPDATE_EDCA);
-
- if (vif->bss_conf.use_cts_prot)
- cmd->protection_flags |= cpu_to_le32(MAC_PROT_FLG_TGG_PROTECT);
-
- IWL_DEBUG_RATE(mvm, "use_cts_prot %d, ht_operation_mode %d\n",
- vif->bss_conf.use_cts_prot,
- vif->bss_conf.ht_operation_mode);
- if (vif->bss_conf.chandef.width != NL80211_CHAN_WIDTH_20_NOHT)
- cmd->qos_flags |= cpu_to_le32(MAC_QOS_FLG_TGN);
- if (ht_enabled)
- iwl_mvm_mac_ctxt_set_ht_flags(mvm, vif, cmd);
-
- cmd->filter_flags = cpu_to_le32(MAC_FILTER_ACCEPT_GRP);
-}
-
-static int iwl_mvm_mac_ctxt_send_cmd(struct iwl_mvm *mvm,
- struct iwl_mac_ctx_cmd *cmd)
-{
- int ret = iwl_mvm_send_cmd_pdu(mvm, MAC_CONTEXT_CMD, 0,
- sizeof(*cmd), cmd);
- if (ret)
- IWL_ERR(mvm, "Failed to send MAC context (action:%d): %d\n",
- le32_to_cpu(cmd->action), ret);
- return ret;
-}
-
-static int iwl_mvm_mac_ctxt_cmd_sta(struct iwl_mvm *mvm,
- struct ieee80211_vif *vif,
- u32 action, bool force_assoc_off,
- const u8 *bssid_override)
-{
- struct iwl_mac_ctx_cmd cmd = {};
- struct iwl_mac_data_sta *ctxt_sta;
-
- WARN_ON(vif->type != NL80211_IFTYPE_STATION);
-
- /* Fill the common data for all mac context types */
- iwl_mvm_mac_ctxt_cmd_common(mvm, vif, &cmd, bssid_override, action);
-
- if (vif->p2p) {
- struct ieee80211_p2p_noa_attr *noa =
- &vif->bss_conf.p2p_noa_attr;
-
- cmd.p2p_sta.ctwin = cpu_to_le32(noa->oppps_ctwindow &
- IEEE80211_P2P_OPPPS_CTWINDOW_MASK);
- ctxt_sta = &cmd.p2p_sta.sta;
- } else {
- ctxt_sta = &cmd.sta;
- }
-
- /* We need the dtim_period to set the MAC as associated */
- if (vif->bss_conf.assoc && vif->bss_conf.dtim_period &&
- !force_assoc_off) {
- u32 dtim_offs;
-
- /*
- * The DTIM count counts down, so when it is N that means N
- * more beacon intervals happen until the DTIM TBTT. Therefore
- * add this to the current time. If that ends up being in the
- * future, the firmware will handle it.
- *
- * Also note that the system_timestamp (which we get here as
- * "sync_device_ts") and TSF timestamp aren't at exactly the
- * same offset in the frame -- the TSF is at the first symbol
- * of the TSF, the system timestamp is at signal acquisition
- * time. This means there's an offset between them of at most
- * a few hundred microseconds (24 * 8 bits + PLCP time gives
- * 384us in the longest case), this is currently not relevant
- * as the firmware wakes up around 2ms before the TBTT.
- */
- dtim_offs = vif->bss_conf.sync_dtim_count *
- vif->bss_conf.beacon_int;
- /* convert TU to usecs */
- dtim_offs *= 1024;
-
- ctxt_sta->dtim_tsf =
- cpu_to_le64(vif->bss_conf.sync_tsf + dtim_offs);
- ctxt_sta->dtim_time =
- cpu_to_le32(vif->bss_conf.sync_device_ts + dtim_offs);
-
- IWL_DEBUG_INFO(mvm, "DTIM TBTT is 0x%llx/0x%x, offset %d\n",
- le64_to_cpu(ctxt_sta->dtim_tsf),
- le32_to_cpu(ctxt_sta->dtim_time),
- dtim_offs);
-
- ctxt_sta->is_assoc = cpu_to_le32(1);
- } else {
- ctxt_sta->is_assoc = cpu_to_le32(0);
-
- /* Allow beacons to pass through as long as we are not
- * associated, or we do not have dtim period information.
- */
- cmd.filter_flags |= cpu_to_le32(MAC_FILTER_IN_BEACON);
- }
-
- ctxt_sta->bi = cpu_to_le32(vif->bss_conf.beacon_int);
- ctxt_sta->bi_reciprocal =
- cpu_to_le32(iwl_mvm_reciprocal(vif->bss_conf.beacon_int));
- ctxt_sta->dtim_interval = cpu_to_le32(vif->bss_conf.beacon_int *
- vif->bss_conf.dtim_period);
- ctxt_sta->dtim_reciprocal =
- cpu_to_le32(iwl_mvm_reciprocal(vif->bss_conf.beacon_int *
- vif->bss_conf.dtim_period));
-
- ctxt_sta->listen_interval = cpu_to_le32(mvm->hw->conf.listen_interval);
- ctxt_sta->assoc_id = cpu_to_le32(vif->bss_conf.aid);
-
- if (vif->probe_req_reg && vif->bss_conf.assoc && vif->p2p)
- cmd.filter_flags |= cpu_to_le32(MAC_FILTER_IN_PROBE_REQUEST);
-
- return iwl_mvm_mac_ctxt_send_cmd(mvm, &cmd);
-}
-
-static int iwl_mvm_mac_ctxt_cmd_listener(struct iwl_mvm *mvm,
- struct ieee80211_vif *vif,
- u32 action)
-{
- struct iwl_mac_ctx_cmd cmd = {};
-
- WARN_ON(vif->type != NL80211_IFTYPE_MONITOR);
-
- iwl_mvm_mac_ctxt_cmd_common(mvm, vif, &cmd, NULL, action);
-
- cmd.filter_flags = cpu_to_le32(MAC_FILTER_IN_PROMISC |
- MAC_FILTER_IN_CONTROL_AND_MGMT |
- MAC_FILTER_IN_BEACON |
- MAC_FILTER_IN_PROBE_REQUEST |
- MAC_FILTER_IN_CRC32);
- ieee80211_hw_set(mvm->hw, RX_INCLUDES_FCS);
-
- return iwl_mvm_mac_ctxt_send_cmd(mvm, &cmd);
-}
-
-static int iwl_mvm_mac_ctxt_cmd_ibss(struct iwl_mvm *mvm,
- struct ieee80211_vif *vif,
- u32 action)
-{
- struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
- struct iwl_mac_ctx_cmd cmd = {};
-
- WARN_ON(vif->type != NL80211_IFTYPE_ADHOC);
-
- iwl_mvm_mac_ctxt_cmd_common(mvm, vif, &cmd, NULL, action);
-
- cmd.filter_flags = cpu_to_le32(MAC_FILTER_IN_BEACON |
- MAC_FILTER_IN_PROBE_REQUEST);
-
- /* cmd.ibss.beacon_time/cmd.ibss.beacon_tsf are curently ignored */
- cmd.ibss.bi = cpu_to_le32(vif->bss_conf.beacon_int);
- cmd.ibss.bi_reciprocal =
- cpu_to_le32(iwl_mvm_reciprocal(vif->bss_conf.beacon_int));
-
- /* TODO: Assumes that the beacon id == mac context id */
- cmd.ibss.beacon_template = cpu_to_le32(mvmvif->id);
-
- return iwl_mvm_mac_ctxt_send_cmd(mvm, &cmd);
-}
-
-struct iwl_mvm_go_iterator_data {
- bool go_active;
-};
-
-static void iwl_mvm_go_iterator(void *_data, u8 *mac, struct ieee80211_vif *vif)
-{
- struct iwl_mvm_go_iterator_data *data = _data;
- struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
-
- if (vif->type == NL80211_IFTYPE_AP && vif->p2p &&
- mvmvif->ap_ibss_active)
- data->go_active = true;
-}
-
-static int iwl_mvm_mac_ctxt_cmd_p2p_device(struct iwl_mvm *mvm,
- struct ieee80211_vif *vif,
- u32 action)
-{
- struct iwl_mac_ctx_cmd cmd = {};
- struct iwl_mvm_go_iterator_data data = {};
-
- WARN_ON(vif->type != NL80211_IFTYPE_P2P_DEVICE);
-
- iwl_mvm_mac_ctxt_cmd_common(mvm, vif, &cmd, NULL, action);
-
- cmd.protection_flags |= cpu_to_le32(MAC_PROT_FLG_TGG_PROTECT);
-
- /* Override the filter flags to accept only probe requests */
- cmd.filter_flags = cpu_to_le32(MAC_FILTER_IN_PROBE_REQUEST);
-
- /*
- * This flag should be set to true when the P2P Device is
- * discoverable and there is at least another active P2P GO. Settings
- * this flag will allow the P2P Device to be discoverable on other
- * channels in addition to its listen channel.
- * Note that this flag should not be set in other cases as it opens the
- * Rx filters on all MAC and increases the number of interrupts.
- */
- ieee80211_iterate_active_interfaces_atomic(
- mvm->hw, IEEE80211_IFACE_ITER_RESUME_ALL,
- iwl_mvm_go_iterator, &data);
-
- cmd.p2p_dev.is_disc_extended = cpu_to_le32(data.go_active ? 1 : 0);
- return iwl_mvm_mac_ctxt_send_cmd(mvm, &cmd);
-}
-
-static void iwl_mvm_mac_ctxt_set_tim(struct iwl_mvm *mvm,
- struct iwl_mac_beacon_cmd *beacon_cmd,
- u8 *beacon, u32 frame_size)
-{
- u32 tim_idx;
- struct ieee80211_mgmt *mgmt = (struct ieee80211_mgmt *)beacon;
-
- /* The index is relative to frame start but we start looking at the
- * variable-length part of the beacon. */
- tim_idx = mgmt->u.beacon.variable - beacon;
-
- /* Parse variable-length elements of beacon to find WLAN_EID_TIM */
- while ((tim_idx < (frame_size - 2)) &&
- (beacon[tim_idx] != WLAN_EID_TIM))
- tim_idx += beacon[tim_idx+1] + 2;
-
- /* If TIM field was found, set variables */
- if ((tim_idx < (frame_size - 1)) && (beacon[tim_idx] == WLAN_EID_TIM)) {
- beacon_cmd->tim_idx = cpu_to_le32(tim_idx);
- beacon_cmd->tim_size = cpu_to_le32((u32)beacon[tim_idx+1]);
- } else {
- IWL_WARN(mvm, "Unable to find TIM Element in beacon\n");
- }
-}
-
-static int iwl_mvm_mac_ctxt_send_beacon(struct iwl_mvm *mvm,
- struct ieee80211_vif *vif,
- struct sk_buff *beacon)
-{
- struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
- struct iwl_host_cmd cmd = {
- .id = BEACON_TEMPLATE_CMD,
- .flags = CMD_ASYNC,
- };
- struct iwl_mac_beacon_cmd beacon_cmd = {};
- struct ieee80211_tx_info *info;
- u32 beacon_skb_len;
- u32 rate, tx_flags;
-
- if (WARN_ON(!beacon))
- return -EINVAL;
-
- beacon_skb_len = beacon->len;
-
- /* TODO: for now the beacon template id is set to be the mac context id.
- * Might be better to handle it as another resource ... */
- beacon_cmd.template_id = cpu_to_le32((u32)mvmvif->id);
- info = IEEE80211_SKB_CB(beacon);
-
- /* Set up TX command fields */
- beacon_cmd.tx.len = cpu_to_le16((u16)beacon_skb_len);
- beacon_cmd.tx.sta_id = mvmvif->bcast_sta.sta_id;
- beacon_cmd.tx.life_time = cpu_to_le32(TX_CMD_LIFE_TIME_INFINITE);
- tx_flags = TX_CMD_FLG_SEQ_CTL | TX_CMD_FLG_TSF;
- tx_flags |=
- iwl_mvm_bt_coex_tx_prio(mvm, (void *)beacon->data, info, 0) <<
- TX_CMD_FLG_BT_PRIO_POS;
- beacon_cmd.tx.tx_flags = cpu_to_le32(tx_flags);
-
- mvm->mgmt_last_antenna_idx =
- iwl_mvm_next_antenna(mvm, iwl_mvm_get_valid_tx_ant(mvm),
- mvm->mgmt_last_antenna_idx);
-
- beacon_cmd.tx.rate_n_flags =
- cpu_to_le32(BIT(mvm->mgmt_last_antenna_idx) <<
- RATE_MCS_ANT_POS);
-
- if (info->band == IEEE80211_BAND_5GHZ || vif->p2p) {
- rate = IWL_FIRST_OFDM_RATE;
- } else {
- rate = IWL_FIRST_CCK_RATE;
- beacon_cmd.tx.rate_n_flags |= cpu_to_le32(RATE_MCS_CCK_MSK);
- }
- beacon_cmd.tx.rate_n_flags |=
- cpu_to_le32(iwl_mvm_mac80211_idx_to_hwrate(rate));
-
- /* Set up TX beacon command fields */
- if (vif->type == NL80211_IFTYPE_AP)
- iwl_mvm_mac_ctxt_set_tim(mvm, &beacon_cmd,
- beacon->data,
- beacon_skb_len);
-
- /* Submit command */
- cmd.len[0] = sizeof(beacon_cmd);
- cmd.data[0] = &beacon_cmd;
- cmd.dataflags[0] = 0;
- cmd.len[1] = beacon_skb_len;
- cmd.data[1] = beacon->data;
- cmd.dataflags[1] = IWL_HCMD_DFL_DUP;
-
- return iwl_mvm_send_cmd(mvm, &cmd);
-}
-
-/* The beacon template for the AP/GO/IBSS has changed and needs update */
-int iwl_mvm_mac_ctxt_beacon_changed(struct iwl_mvm *mvm,
- struct ieee80211_vif *vif)
-{
- struct sk_buff *beacon;
- int ret;
-
- WARN_ON(vif->type != NL80211_IFTYPE_AP &&
- vif->type != NL80211_IFTYPE_ADHOC);
-
- beacon = ieee80211_beacon_get_template(mvm->hw, vif, NULL);
- if (!beacon)
- return -ENOMEM;
-
- ret = iwl_mvm_mac_ctxt_send_beacon(mvm, vif, beacon);
- dev_kfree_skb(beacon);
- return ret;
-}
-
-struct iwl_mvm_mac_ap_iterator_data {
- struct iwl_mvm *mvm;
- struct ieee80211_vif *vif;
- u32 beacon_device_ts;
- u16 beacon_int;
-};
-
-/* Find the beacon_device_ts and beacon_int for a managed interface */
-static void iwl_mvm_mac_ap_iterator(void *_data, u8 *mac,
- struct ieee80211_vif *vif)
-{
- struct iwl_mvm_mac_ap_iterator_data *data = _data;
-
- if (vif->type != NL80211_IFTYPE_STATION || !vif->bss_conf.assoc)
- return;
-
- /* Station client has higher priority over P2P client*/
- if (vif->p2p && data->beacon_device_ts)
- return;
-
- data->beacon_device_ts = vif->bss_conf.sync_device_ts;
- data->beacon_int = vif->bss_conf.beacon_int;
-}
-
-/*
- * Fill the specific data for mac context of type AP of P2P GO
- */
-static void iwl_mvm_mac_ctxt_cmd_fill_ap(struct iwl_mvm *mvm,
- struct ieee80211_vif *vif,
- struct iwl_mac_data_ap *ctxt_ap,
- bool add)
-{
- struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
- struct iwl_mvm_mac_ap_iterator_data data = {
- .mvm = mvm,
- .vif = vif,
- .beacon_device_ts = 0
- };
-
- ctxt_ap->bi = cpu_to_le32(vif->bss_conf.beacon_int);
- ctxt_ap->bi_reciprocal =
- cpu_to_le32(iwl_mvm_reciprocal(vif->bss_conf.beacon_int));
- ctxt_ap->dtim_interval = cpu_to_le32(vif->bss_conf.beacon_int *
- vif->bss_conf.dtim_period);
- ctxt_ap->dtim_reciprocal =
- cpu_to_le32(iwl_mvm_reciprocal(vif->bss_conf.beacon_int *
- vif->bss_conf.dtim_period));
-
- ctxt_ap->mcast_qid = cpu_to_le32(vif->cab_queue);
-
- /*
- * Only set the beacon time when the MAC is being added, when we
- * just modify the MAC then we should keep the time -- the firmware
- * can otherwise have a "jumping" TBTT.
- */
- if (add) {
- /*
- * If there is a station/P2P client interface which is
- * associated, set the AP's TBTT far enough from the station's
- * TBTT. Otherwise, set it to the current system time
- */
- ieee80211_iterate_active_interfaces_atomic(
- mvm->hw, IEEE80211_IFACE_ITER_RESUME_ALL,
- iwl_mvm_mac_ap_iterator, &data);
-
- if (data.beacon_device_ts) {
- u32 rand = (prandom_u32() % (64 - 36)) + 36;
- mvmvif->ap_beacon_time = data.beacon_device_ts +
- ieee80211_tu_to_usec(data.beacon_int * rand /
- 100);
- } else {
- mvmvif->ap_beacon_time =
- iwl_read_prph(mvm->trans,
- DEVICE_SYSTEM_TIME_REG);
- }
- }
-
- ctxt_ap->beacon_time = cpu_to_le32(mvmvif->ap_beacon_time);
- ctxt_ap->beacon_tsf = 0; /* unused */
-
- /* TODO: Assume that the beacon id == mac context id */
- ctxt_ap->beacon_template = cpu_to_le32(mvmvif->id);
-}
-
-static int iwl_mvm_mac_ctxt_cmd_ap(struct iwl_mvm *mvm,
- struct ieee80211_vif *vif,
- u32 action)
-{
- struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
- struct iwl_mac_ctx_cmd cmd = {};
-
- WARN_ON(vif->type != NL80211_IFTYPE_AP || vif->p2p);
-
- /* Fill the common data for all mac context types */
- iwl_mvm_mac_ctxt_cmd_common(mvm, vif, &cmd, NULL, action);
-
- /*
- * pass probe requests and beacons from other APs (needed
- * for ht protection); when there're no any associated station
- * don't ask FW to pass beacons to prevent unnecessary wake-ups.
- */
- cmd.filter_flags |= cpu_to_le32(MAC_FILTER_IN_PROBE_REQUEST);
- if (mvmvif->ap_assoc_sta_count) {
- cmd.filter_flags |= cpu_to_le32(MAC_FILTER_IN_BEACON);
- IWL_DEBUG_HC(mvm, "Asking FW to pass beacons\n");
- } else {
- IWL_DEBUG_HC(mvm, "No need to receive beacons\n");
- }
-
- /* Fill the data specific for ap mode */
- iwl_mvm_mac_ctxt_cmd_fill_ap(mvm, vif, &cmd.ap,
- action == FW_CTXT_ACTION_ADD);
-
- return iwl_mvm_mac_ctxt_send_cmd(mvm, &cmd);
-}
-
-static int iwl_mvm_mac_ctxt_cmd_go(struct iwl_mvm *mvm,
- struct ieee80211_vif *vif,
- u32 action)
-{
- struct iwl_mac_ctx_cmd cmd = {};
- struct ieee80211_p2p_noa_attr *noa = &vif->bss_conf.p2p_noa_attr;
-
- WARN_ON(vif->type != NL80211_IFTYPE_AP || !vif->p2p);
-
- /* Fill the common data for all mac context types */
- iwl_mvm_mac_ctxt_cmd_common(mvm, vif, &cmd, NULL, action);
-
- /*
- * pass probe requests and beacons from other APs (needed
- * for ht protection)
- */
- cmd.filter_flags |= cpu_to_le32(MAC_FILTER_IN_PROBE_REQUEST |
- MAC_FILTER_IN_BEACON);
-
- /* Fill the data specific for GO mode */
- iwl_mvm_mac_ctxt_cmd_fill_ap(mvm, vif, &cmd.go.ap,
- action == FW_CTXT_ACTION_ADD);
-
- cmd.go.ctwin = cpu_to_le32(noa->oppps_ctwindow &
- IEEE80211_P2P_OPPPS_CTWINDOW_MASK);
- cmd.go.opp_ps_enabled =
- cpu_to_le32(!!(noa->oppps_ctwindow &
- IEEE80211_P2P_OPPPS_ENABLE_BIT));
-
- return iwl_mvm_mac_ctxt_send_cmd(mvm, &cmd);
-}
-
-static int iwl_mvm_mac_ctx_send(struct iwl_mvm *mvm, struct ieee80211_vif *vif,
- u32 action, bool force_assoc_off,
- const u8 *bssid_override)
-{
- switch (vif->type) {
- case NL80211_IFTYPE_STATION:
- return iwl_mvm_mac_ctxt_cmd_sta(mvm, vif, action,
- force_assoc_off,
- bssid_override);
- break;
- case NL80211_IFTYPE_AP:
- if (!vif->p2p)
- return iwl_mvm_mac_ctxt_cmd_ap(mvm, vif, action);
- else
- return iwl_mvm_mac_ctxt_cmd_go(mvm, vif, action);
- break;
- case NL80211_IFTYPE_MONITOR:
- return iwl_mvm_mac_ctxt_cmd_listener(mvm, vif, action);
- case NL80211_IFTYPE_P2P_DEVICE:
- return iwl_mvm_mac_ctxt_cmd_p2p_device(mvm, vif, action);
- case NL80211_IFTYPE_ADHOC:
- return iwl_mvm_mac_ctxt_cmd_ibss(mvm, vif, action);
- default:
- break;
- }
-
- return -EOPNOTSUPP;
-}
-
-int iwl_mvm_mac_ctxt_add(struct iwl_mvm *mvm, struct ieee80211_vif *vif)
-{
- struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
- int ret;
-
- if (WARN_ONCE(mvmvif->uploaded, "Adding active MAC %pM/%d\n",
- vif->addr, ieee80211_vif_type_p2p(vif)))
- return -EIO;
-
- ret = iwl_mvm_mac_ctx_send(mvm, vif, FW_CTXT_ACTION_ADD,
- true, NULL);
- if (ret)
- return ret;
-
- /* will only do anything at resume from D3 time */
- iwl_mvm_set_last_nonqos_seq(mvm, vif);
-
- mvmvif->uploaded = true;
- return 0;
-}
-
-int iwl_mvm_mac_ctxt_changed(struct iwl_mvm *mvm, struct ieee80211_vif *vif,
- bool force_assoc_off, const u8 *bssid_override)
-{
- struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
-
- if (WARN_ONCE(!mvmvif->uploaded, "Changing inactive MAC %pM/%d\n",
- vif->addr, ieee80211_vif_type_p2p(vif)))
- return -EIO;
-
- return iwl_mvm_mac_ctx_send(mvm, vif, FW_CTXT_ACTION_MODIFY,
- force_assoc_off, bssid_override);
-}
-
-int iwl_mvm_mac_ctxt_remove(struct iwl_mvm *mvm, struct ieee80211_vif *vif)
-{
- struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
- struct iwl_mac_ctx_cmd cmd;
- int ret;
-
- if (WARN_ONCE(!mvmvif->uploaded, "Removing inactive MAC %pM/%d\n",
- vif->addr, ieee80211_vif_type_p2p(vif)))
- return -EIO;
-
- memset(&cmd, 0, sizeof(cmd));
-
- cmd.id_and_color = cpu_to_le32(FW_CMD_ID_AND_COLOR(mvmvif->id,
- mvmvif->color));
- cmd.action = cpu_to_le32(FW_CTXT_ACTION_REMOVE);
-
- ret = iwl_mvm_send_cmd_pdu(mvm, MAC_CONTEXT_CMD, 0,
- sizeof(cmd), &cmd);
- if (ret) {
- IWL_ERR(mvm, "Failed to remove MAC context: %d\n", ret);
- return ret;
- }
-
- mvmvif->uploaded = false;
-
- if (vif->type == NL80211_IFTYPE_MONITOR)
- __clear_bit(IEEE80211_HW_RX_INCLUDES_FCS, mvm->hw->flags);
-
- return 0;
-}
-
-static void iwl_mvm_csa_count_down(struct iwl_mvm *mvm,
- struct ieee80211_vif *csa_vif, u32 gp2,
- bool tx_success)
-{
- struct iwl_mvm_vif *mvmvif =
- iwl_mvm_vif_from_mac80211(csa_vif);
-
- /* Don't start to countdown from a failed beacon */
- if (!tx_success && !mvmvif->csa_countdown)
- return;
-
- mvmvif->csa_countdown = true;
-
- if (!ieee80211_csa_is_complete(csa_vif)) {
- int c = ieee80211_csa_update_counter(csa_vif);
-
- iwl_mvm_mac_ctxt_beacon_changed(mvm, csa_vif);
- if (csa_vif->p2p &&
- !iwl_mvm_te_scheduled(&mvmvif->time_event_data) && gp2 &&
- tx_success) {
- u32 rel_time = (c + 1) *
- csa_vif->bss_conf.beacon_int -
- IWL_MVM_CHANNEL_SWITCH_TIME_GO;
- u32 apply_time = gp2 + rel_time * 1024;
-
- iwl_mvm_schedule_csa_period(mvm, csa_vif,
- IWL_MVM_CHANNEL_SWITCH_TIME_GO -
- IWL_MVM_CHANNEL_SWITCH_MARGIN,
- apply_time);
- }
- } else if (!iwl_mvm_te_scheduled(&mvmvif->time_event_data)) {
- /* we don't have CSA NoA scheduled yet, switch now */
- ieee80211_csa_finish(csa_vif);
- RCU_INIT_POINTER(mvm->csa_vif, NULL);
- }
-}
-
-void iwl_mvm_rx_beacon_notif(struct iwl_mvm *mvm,
- struct iwl_rx_cmd_buffer *rxb)
-{
- struct iwl_rx_packet *pkt = rxb_addr(rxb);
- struct iwl_extended_beacon_notif *beacon = (void *)pkt->data;
- struct iwl_mvm_tx_resp *beacon_notify_hdr;
- struct ieee80211_vif *csa_vif;
- struct ieee80211_vif *tx_blocked_vif;
- u16 status;
-
- lockdep_assert_held(&mvm->mutex);
-
- beacon_notify_hdr = &beacon->beacon_notify_hdr;
- mvm->ap_last_beacon_gp2 = le32_to_cpu(beacon->gp2);
-
- status = le16_to_cpu(beacon_notify_hdr->status.status) & TX_STATUS_MSK;
- IWL_DEBUG_RX(mvm,
- "beacon status %#x retries:%d tsf:0x%16llX gp2:0x%X rate:%d\n",
- status, beacon_notify_hdr->failure_frame,
- le64_to_cpu(beacon->tsf),
- mvm->ap_last_beacon_gp2,
- le32_to_cpu(beacon_notify_hdr->initial_rate));
-
- csa_vif = rcu_dereference_protected(mvm->csa_vif,
- lockdep_is_held(&mvm->mutex));
- if (unlikely(csa_vif && csa_vif->csa_active))
- iwl_mvm_csa_count_down(mvm, csa_vif, mvm->ap_last_beacon_gp2,
- (status == TX_STATUS_SUCCESS));
-
- tx_blocked_vif = rcu_dereference_protected(mvm->csa_tx_blocked_vif,
- lockdep_is_held(&mvm->mutex));
- if (unlikely(tx_blocked_vif)) {
- struct iwl_mvm_vif *mvmvif =
- iwl_mvm_vif_from_mac80211(tx_blocked_vif);
-
- /*
- * The channel switch is started and we have blocked the
- * stations. If this is the first beacon (the timeout wasn't
- * set), set the unblock timeout, otherwise countdown
- */
- if (!mvm->csa_tx_block_bcn_timeout)
- mvm->csa_tx_block_bcn_timeout =
- IWL_MVM_CS_UNBLOCK_TX_TIMEOUT;
- else
- mvm->csa_tx_block_bcn_timeout--;
-
- /* Check if the timeout is expired, and unblock tx */
- if (mvm->csa_tx_block_bcn_timeout == 0) {
- iwl_mvm_modify_all_sta_disable_tx(mvm, mvmvif, false);
- RCU_INIT_POINTER(mvm->csa_tx_blocked_vif, NULL);
- }
- }
-}
-
-static void iwl_mvm_beacon_loss_iterator(void *_data, u8 *mac,
- struct ieee80211_vif *vif)
-{
- struct iwl_missed_beacons_notif *missed_beacons = _data;
- struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
- struct iwl_mvm *mvm = mvmvif->mvm;
- struct iwl_fw_dbg_trigger_missed_bcon *bcon_trig;
- struct iwl_fw_dbg_trigger_tlv *trigger;
- u32 stop_trig_missed_bcon, stop_trig_missed_bcon_since_rx;
- u32 rx_missed_bcon, rx_missed_bcon_since_rx;
-
- if (mvmvif->id != (u16)le32_to_cpu(missed_beacons->mac_id))
- return;
-
- rx_missed_bcon = le32_to_cpu(missed_beacons->consec_missed_beacons);
- rx_missed_bcon_since_rx =
- le32_to_cpu(missed_beacons->consec_missed_beacons_since_last_rx);
- /*
- * TODO: the threshold should be adjusted based on latency conditions,
- * and/or in case of a CS flow on one of the other AP vifs.
- */
- if (le32_to_cpu(missed_beacons->consec_missed_beacons_since_last_rx) >
- IWL_MVM_MISSED_BEACONS_THRESHOLD)
- ieee80211_beacon_loss(vif);
-
- if (!iwl_fw_dbg_trigger_enabled(mvm->fw,
- FW_DBG_TRIGGER_MISSED_BEACONS))
- return;
-
- trigger = iwl_fw_dbg_get_trigger(mvm->fw,
- FW_DBG_TRIGGER_MISSED_BEACONS);
- bcon_trig = (void *)trigger->data;
- stop_trig_missed_bcon = le32_to_cpu(bcon_trig->stop_consec_missed_bcon);
- stop_trig_missed_bcon_since_rx =
- le32_to_cpu(bcon_trig->stop_consec_missed_bcon_since_rx);
-
- /* TODO: implement start trigger */
-
- if (!iwl_fw_dbg_trigger_check_stop(mvm, vif, trigger))
- return;
-
- if (rx_missed_bcon_since_rx >= stop_trig_missed_bcon_since_rx ||
- rx_missed_bcon >= stop_trig_missed_bcon)
- iwl_mvm_fw_dbg_collect_trig(mvm, trigger, NULL);
-}
-
-void iwl_mvm_rx_missed_beacons_notif(struct iwl_mvm *mvm,
- struct iwl_rx_cmd_buffer *rxb)
-{
- struct iwl_rx_packet *pkt = rxb_addr(rxb);
- struct iwl_missed_beacons_notif *mb = (void *)pkt->data;
-
- IWL_DEBUG_INFO(mvm,
- "missed bcn mac_id=%u, consecutive=%u (%u, %u, %u)\n",
- le32_to_cpu(mb->mac_id),
- le32_to_cpu(mb->consec_missed_beacons),
- le32_to_cpu(mb->consec_missed_beacons_since_last_rx),
- le32_to_cpu(mb->num_recvd_beacons),
- le32_to_cpu(mb->num_expected_beacons));
-
- ieee80211_iterate_active_interfaces_atomic(mvm->hw,
- IEEE80211_IFACE_ITER_NORMAL,
- iwl_mvm_beacon_loss_iterator,
- mb);
-}
projects / cascardo / linux.git / blobdiff