text: /******************************************************************************
   *
   * 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 - 2017 Intel Deutschland GmbH
   * Copyright(c) 2018 - 2019 Intel Corporation
   *
   * 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.
   *
   * The full GNU General Public License is included in this distribution
   * in the file called COPYING.
   *
   * Contact Information:
   *  Intel Linux Wireless <linuxwifi@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 - 2017 Intel Deutschland GmbH
   * Copyright(c) 2018 - 2019 Intel Corporation
   * 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,
  };
  
  const u8 iwl_mvm_ac_to_gen2_tx_fifo[] = {
  	IWL_GEN2_EDCA_TX_FIFO_VO,
  	IWL_GEN2_EDCA_TX_FIFO_VI,
  	IWL_GEN2_EDCA_TX_FIFO_BE,
  	IWL_GEN2_EDCA_TX_FIFO_BK,
  	IWL_GEN2_TRIG_TX_FIFO_VO,
  	IWL_GEN2_TRIG_TX_FIFO_VI,
  	IWL_GEN2_TRIG_TX_FIFO_BE,
  	IWL_GEN2_TRIG_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;
  };
  
  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;
  }
  
  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);
  }
  
  int iwl_mvm_mac_ctxt_init(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,
  	};
  	int ret, i;
  
  	lockdep_assert_held(&mvm->mutex);
  
  	/*
  	 * 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);
  
  	/*
  	 * 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 and NAN.*/
  	if (vif->type == NL80211_IFTYPE_P2P_DEVICE)
  		return 0;
  
  	/* Allocate the CAB queue for softAP and GO interfaces */
  	if (vif->type == NL80211_IFTYPE_AP ||
  	    vif->type == NL80211_IFTYPE_ADHOC) {
  		/*
  		 * For TVQM this will be overwritten later with the FW assigned
  		 * queue value (when queue is enabled).
  		 */
  		mvmvif->cab_queue = IWL_MVM_DQA_GCAST_QUEUE;
  	}
  
  	mvmvif->bcast_sta.sta_id = IWL_MVM_INVALID_STA;
  	mvmvif->mcast_sta.sta_id = IWL_MVM_INVALID_STA;
  	mvmvif->ap_sta_id = IWL_MVM_INVALID_STA;
  
  	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));
  	return ret;
  }
  
  static void iwl_mvm_ack_rates(struct iwl_mvm *mvm,
  			      struct ieee80211_vif *vif,
  			      enum nl80211_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
  					    : NL80211_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);
  
  	cmd->filter_flags = 0;
  
  	for (i = 0; i < IEEE80211_NUM_ACS; i++) {
  		u8 txf = iwl_mvm_mac_ac_to_tx_fifo(mvm, i);
  		u8 ucode_ac = iwl_mvm_mac80211_ac_to_ucode_ac(i);
  
  		cmd->ac[ucode_ac].cw_min =
  			cpu_to_le16(mvmvif->queue_params[i].cw_min);
  		cmd->ac[ucode_ac].cw_max =
  			cpu_to_le16(mvmvif->queue_params[i].cw_max);
  		cmd->ac[ucode_ac].edca_txop =
  			cpu_to_le16(mvmvif->queue_params[i].txop * 32);
  		cmd->ac[ucode_ac].aifsn = mvmvif->queue_params[i].aifs;
  		cmd->ac[ucode_ac].fifos_mask = BIT(txf);
  	}
  
  	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);
  }
  
  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) {
  		struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
  		u8 ap_sta_id = mvmvif->ap_sta_id;
  		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);
  		ctxt_sta->assoc_beacon_arrive_time =
  			cpu_to_le32(vif->bss_conf.sync_device_ts);
  
  		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);
  
  		/*
  		 * allow multicast data frames only as long as the station is
  		 * authorized, i.e., GTK keys are already installed (if needed)
  		 */
  		if (ap_sta_id < IWL_MVM_STATION_COUNT) {
  			struct ieee80211_sta *sta;
  
  			rcu_read_lock();
  
  			sta = rcu_dereference(mvm->fw_id_to_mac_id[ap_sta_id]);
  			if (!IS_ERR_OR_NULL(sta)) {
  				struct iwl_mvm_sta *mvmsta =
  					iwl_mvm_sta_from_mac80211(sta);
  
  				if (mvmsta->sta_state ==
  				    IEEE80211_STA_AUTHORIZED)
  					cmd.filter_flags |=
  						cpu_to_le32(MAC_FILTER_ACCEPT_GRP);
  			}
  
  			rcu_read_unlock();
  		}
  	} 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->dtim_interval = cpu_to_le32(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);
  
  	if (vif->bss_conf.he_support && !iwlwifi_mod_params.disable_11ax) {
  		cmd.filter_flags |= cpu_to_le32(MAC_FILTER_IN_11AX);
  		if (vif->bss_conf.twt_requester && IWL_MVM_USE_TWT)
  			ctxt_sta->data_policy |= cpu_to_le32(TWT_SUPPORTED);
  	}
  
  
  	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 = {};
  	u32 tfd_queue_msk = BIT(mvm->snif_queue);
  	int ret;
  
  	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 |
  				       MAC_FILTER_ACCEPT_GRP);
  	ieee80211_hw_set(mvm->hw, RX_INCLUDES_FCS);
  
  	/* Allocate sniffer station */
  	ret = iwl_mvm_allocate_int_sta(mvm, &mvm->snif_sta, tfd_queue_msk,
  				       vif->type, IWL_STA_GENERAL_PURPOSE);
  	if (ret)
  		return ret;
  
  	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 |
  				       MAC_FILTER_ACCEPT_GRP);
  
  	/* cmd.ibss.beacon_time/cmd.ibss.beacon_tsf are curently ignored */
  	cmd.ibss.bi = cpu_to_le32(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);
  
  	/* 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);
  }
  
  void iwl_mvm_mac_ctxt_set_tim(struct iwl_mvm *mvm,
  			      __le32 *tim_index, __le32 *tim_size,
  			      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)) {
  		*tim_index = cpu_to_le32(tim_idx);
  		*tim_size = cpu_to_le32((u32)beacon[tim_idx + 1]);
  	} else {
  		IWL_WARN(mvm, "Unable to find TIM Element in beacon\n");
  	}
  }
  
  static u32 iwl_mvm_find_ie_offset(u8 *beacon, u8 eid, u32 frame_size)
  {
  	struct ieee80211_mgmt *mgmt = (void *)beacon;
  	const u8 *ie;
  
  	if (WARN_ON_ONCE(frame_size <= (mgmt->u.beacon.variable - beacon)))
  		return 0;
  
  	frame_size -= mgmt->u.beacon.variable - beacon;
  
  	ie = cfg80211_find_ie(eid, mgmt->u.beacon.variable, frame_size);
  	if (!ie)
  		return 0;
  
  	return ie - beacon;
  }
  
  u8 iwl_mvm_mac_ctxt_get_lowest_rate(struct ieee80211_tx_info *info,
  				    struct ieee80211_vif *vif)
  {
  	u8 rate;
  	if (info->band == NL80211_BAND_2GHZ && !vif->p2p)
  		rate = IWL_FIRST_CCK_RATE;
  	else
  		rate = IWL_FIRST_OFDM_RATE;
  
  	return rate;
  }
  
  static void iwl_mvm_mac_ctxt_set_tx(struct iwl_mvm *mvm,
  				    struct ieee80211_vif *vif,
  				    struct sk_buff *beacon,
  				    struct iwl_tx_cmd *tx)
  {
  	struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
  	struct ieee80211_tx_info *info;
  	u8 rate;
  	u32 tx_flags;
  
  	info = IEEE80211_SKB_CB(beacon);
  
  	/* Set up TX command fields */
  	tx->len = cpu_to_le16((u16)beacon->len);
  	tx->sta_id = mvmvif->bcast_sta.sta_id;
  	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;
  	tx->tx_flags = cpu_to_le32(tx_flags);
  
  	if (!fw_has_capa(&mvm->fw->ucode_capa,
  			 IWL_UCODE_TLV_CAPA_BEACON_ANT_SELECTION))
  		iwl_mvm_toggle_tx_ant(mvm, &mvm->mgmt_last_antenna_idx);
  
  	tx->rate_n_flags =
  		cpu_to_le32(BIT(mvm->mgmt_last_antenna_idx) <<
  			    RATE_MCS_ANT_POS);
  
  	rate = iwl_mvm_mac_ctxt_get_lowest_rate(info, vif);
  
  	tx->rate_n_flags |= cpu_to_le32(iwl_mvm_mac80211_idx_to_hwrate(rate));
  	if (rate == IWL_FIRST_CCK_RATE)
  		tx->rate_n_flags |= cpu_to_le32(RATE_MCS_CCK_MSK);
  
  }
  
  int iwl_mvm_mac_ctxt_send_beacon_cmd(struct iwl_mvm *mvm,
  				     struct sk_buff *beacon,
  				     void *data, int len)
  {
  	struct iwl_host_cmd cmd = {
  		.id = BEACON_TEMPLATE_CMD,
  		.flags = CMD_ASYNC,
  	};
  
  	cmd.len[0] = len;
  	cmd.data[0] = data;
  	cmd.dataflags[0] = 0;
  	cmd.len[1] = beacon->len;
  	cmd.data[1] = beacon->data;
  	cmd.dataflags[1] = IWL_HCMD_DFL_DUP;
  
  	return iwl_mvm_send_cmd(mvm, &cmd);
  }
  
  static int iwl_mvm_mac_ctxt_send_beacon_v6(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_mac_beacon_cmd_v6 beacon_cmd = {};
  
  	iwl_mvm_mac_ctxt_set_tx(mvm, vif, beacon, &beacon_cmd.tx);
  
  	beacon_cmd.template_id = cpu_to_le32((u32)mvmvif->id);
  
  	if (vif->type == NL80211_IFTYPE_AP)
  		iwl_mvm_mac_ctxt_set_tim(mvm, &beacon_cmd.tim_idx,
  					 &beacon_cmd.tim_size,
  					 beacon->data, beacon->len);
  
  	return iwl_mvm_mac_ctxt_send_beacon_cmd(mvm, beacon, &beacon_cmd,
  						sizeof(beacon_cmd));
  }
  
  static int iwl_mvm_mac_ctxt_send_beacon_v7(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_mac_beacon_cmd_v7 beacon_cmd = {};
  
  	iwl_mvm_mac_ctxt_set_tx(mvm, vif, beacon, &beacon_cmd.tx);
  
  	beacon_cmd.template_id = cpu_to_le32((u32)mvmvif->id);
  
  	if (vif->type == NL80211_IFTYPE_AP)
  		iwl_mvm_mac_ctxt_set_tim(mvm, &beacon_cmd.tim_idx,
  					 &beacon_cmd.tim_size,
  					 beacon->data, beacon->len);
  
  	beacon_cmd.csa_offset =
  		cpu_to_le32(iwl_mvm_find_ie_offset(beacon->data,
  						   WLAN_EID_CHANNEL_SWITCH,
  						   beacon->len));
  	beacon_cmd.ecsa_offset =
  		cpu_to_le32(iwl_mvm_find_ie_offset(beacon->data,
  						   WLAN_EID_EXT_CHANSWITCH_ANN,
  						   beacon->len));
  
  	return iwl_mvm_mac_ctxt_send_beacon_cmd(mvm, beacon, &beacon_cmd,
  						sizeof(beacon_cmd));
  }
  
  static int iwl_mvm_mac_ctxt_send_beacon_v9(struct iwl_mvm *mvm,
  					   struct ieee80211_vif *vif,
  					   struct sk_buff *beacon)
  {
  	struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
  	struct ieee80211_tx_info *info = IEEE80211_SKB_CB(beacon);
  	struct iwl_mac_beacon_cmd beacon_cmd = {};
  	u8 rate = iwl_mvm_mac_ctxt_get_lowest_rate(info, vif);
  	u16 flags;
  
  	flags = iwl_mvm_mac80211_idx_to_hwrate(rate);
  
  	if (rate == IWL_FIRST_CCK_RATE)
  		flags |= IWL_MAC_BEACON_CCK;
  
  	beacon_cmd.flags = cpu_to_le16(flags);
  	beacon_cmd.byte_cnt = cpu_to_le16((u16)beacon->len);
  	beacon_cmd.template_id = cpu_to_le32((u32)mvmvif->id);
  
  	if (vif->type == NL80211_IFTYPE_AP)
  		iwl_mvm_mac_ctxt_set_tim(mvm, &beacon_cmd.tim_idx,
  					 &beacon_cmd.tim_size,
  					 beacon->data, beacon->len);
  
  	beacon_cmd.csa_offset =
  		cpu_to_le32(iwl_mvm_find_ie_offset(beacon->data,
  						   WLAN_EID_CHANNEL_SWITCH,
  						   beacon->len));
  	beacon_cmd.ecsa_offset =
  		cpu_to_le32(iwl_mvm_find_ie_offset(beacon->data,
  						   WLAN_EID_EXT_CHANSWITCH_ANN,
  						   beacon->len));
  
  	return iwl_mvm_mac_ctxt_send_beacon_cmd(mvm, beacon, &beacon_cmd,
  						sizeof(beacon_cmd));
  }
  
  int iwl_mvm_mac_ctxt_send_beacon(struct iwl_mvm *mvm,
  				 struct ieee80211_vif *vif,
  				 struct sk_buff *beacon)
  {
  	if (WARN_ON(!beacon))
  		return -EINVAL;
  
  	if (IWL_MVM_NON_TRANSMITTING_AP)
  		return 0;
  
  	if (!fw_has_capa(&mvm->fw->ucode_capa,
  			 IWL_UCODE_TLV_CAPA_CSA_AND_TBTT_OFFLOAD))
  		return iwl_mvm_mac_ctxt_send_beacon_v6(mvm, vif, beacon);
  
  	if (fw_has_api(&mvm->fw->ucode_capa,
  		       IWL_UCODE_TLV_API_NEW_BEACON_TEMPLATE))
  		return iwl_mvm_mac_ctxt_send_beacon_v9(mvm, vif, beacon);
  
  	return iwl_mvm_mac_ctxt_send_beacon_v7(mvm, vif, beacon);
  }
  
  /* 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;
  
  #ifdef CONFIG_IWLWIFI_DEBUGFS
  	if (mvm->beacon_inject_active)
  		return -EBUSY;
  #endif
  
  	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_ctx_cmd *cmd,
  					 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
  	};
  
  	/* in AP mode, the MCAST FIFO takes the EDCA params from VO */
  	cmd->ac[IWL_MVM_TX_FIFO_VO].fifos_mask |= BIT(IWL_MVM_TX_FIFO_MCAST);
  
  	/*
  	 * in AP mode, 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 || !mvm->drop_bcn_ap_mode) {
  		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");
  	}
  
  	ctxt_ap->bi = cpu_to_le32(vif->bss_conf.beacon_int);
  	ctxt_ap->dtim_interval = cpu_to_le32(vif->bss_conf.beacon_int *
  					     vif->bss_conf.dtim_period);
  
  	if (!fw_has_api(&mvm->fw->ucode_capa,
  			IWL_UCODE_TLV_API_STA_TYPE))
  		ctxt_ap->mcast_qid = cpu_to_le32(mvmvif->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_mvm_get_systime(mvm);
  		}
  	}
  
  	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_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);
  
  	/* Fill the data specific for ap mode */
  	iwl_mvm_mac_ctxt_cmd_fill_ap(mvm, vif, &cmd, &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);
  
  	/* Fill the data specific for GO mode */
  	iwl_mvm_mac_ctxt_cmd_fill_ap(mvm, vif, &cmd, &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);
  		iwl_mvm_dealloc_snif_sta(mvm);
  	}
  
  	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_extended_beacon_notif_v5 *beacon_v5 = (void *)pkt->data;
  	struct ieee80211_vif *csa_vif;
  	struct ieee80211_vif *tx_blocked_vif;
  	struct agg_tx_status *agg_status;
  	u16 status;
  
  	lockdep_assert_held(&mvm->mutex);
  
  	mvm->ap_last_beacon_gp2 = le32_to_cpu(beacon->gp2);
  
  	if (!iwl_mvm_is_short_beacon_notif_supported(mvm)) {
  		struct iwl_mvm_tx_resp *beacon_notify_hdr =
  			&beacon_v5->beacon_notify_hdr;
  
  		mvm->ibss_manager = beacon_v5->ibss_mgr_status != 0;
  		agg_status = iwl_mvm_get_agg_status(mvm, beacon_notify_hdr);
  		status = le16_to_cpu(agg_status->status) & TX_STATUS_MSK;
  		IWL_DEBUG_RX(mvm,
  			     "beacon status %#x retries:%d tsf:0x%016llX 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));
  	} else {
  		mvm->ibss_manager = beacon->ibss_mgr_status != 0;
  		status = le32_to_cpu(beacon->status) & TX_STATUS_MSK;
  		IWL_DEBUG_RX(mvm,
  			     "beacon status %#x tsf:0x%016llX gp2:0x%X\n",
  			     status, le64_to_cpu(beacon->tsf),
  			     mvm->ap_last_beacon_gp2);
  	}
  
  	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);
  		}
  	}
  }
  
  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;
  	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;
  	struct ieee80211_vif *vif;
  	u32 id = le32_to_cpu(mb->mac_id);
  	union iwl_dbg_tlv_tp_data tp_data = { .fw_pkt = pkt };
  
  	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));
  
  	rcu_read_lock();
  
  	vif = iwl_mvm_rcu_dereference_vif_id(mvm, id, true);
  	if (!vif)
  		goto out;
  
  	rx_missed_bcon = le32_to_cpu(mb->consec_missed_beacons);
  	rx_missed_bcon_since_rx =
  		le32_to_cpu(mb->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 (rx_missed_bcon > IWL_MVM_MISSED_BEACONS_THRESHOLD_LONG)
  		iwl_mvm_connection_loss(mvm, vif, "missed beacons");
  	else if (rx_missed_bcon_since_rx > IWL_MVM_MISSED_BEACONS_THRESHOLD)
  		ieee80211_beacon_loss(vif);
  
  	iwl_dbg_tlv_time_point(&mvm->fwrt,
  			       IWL_FW_INI_TIME_POINT_MISSED_BEACONS, &tp_data);
  
  	trigger = iwl_fw_dbg_trigger_on(&mvm->fwrt, ieee80211_vif_to_wdev(vif),
  					FW_DBG_TRIGGER_MISSED_BEACONS);
  	if (!trigger)
  		goto out;
  
  	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 (rx_missed_bcon_since_rx >= stop_trig_missed_bcon_since_rx ||
  	    rx_missed_bcon >= stop_trig_missed_bcon)
  		iwl_fw_dbg_collect_trig(&mvm->fwrt, trigger, NULL);
  
  out:
  	rcu_read_unlock();
  }
  
  void iwl_mvm_rx_stored_beacon_notif(struct iwl_mvm *mvm,
  				    struct iwl_rx_cmd_buffer *rxb)
  {
  	struct iwl_rx_packet *pkt = rxb_addr(rxb);
  	struct iwl_stored_beacon_notif *sb = (void *)pkt->data;
  	struct ieee80211_rx_status rx_status;
  	struct sk_buff *skb;
  	u32 size = le32_to_cpu(sb->byte_count);
  
  	if (size == 0)
  		return;
  
  	skb = alloc_skb(size, GFP_ATOMIC);
  	if (!skb) {
  		IWL_ERR(mvm, "alloc_skb failed\n");
  		return;
  	}
  
  	/* update rx_status according to the notification's metadata */
  	memset(&rx_status, 0, sizeof(rx_status));
  	rx_status.mactime = le64_to_cpu(sb->tsf);
  	/* TSF as indicated by the firmware  is at INA time */
  	rx_status.flag |= RX_FLAG_MACTIME_PLCP_START;
  	rx_status.device_timestamp = le32_to_cpu(sb->system_time);
  	rx_status.band =
  		(sb->band & cpu_to_le16(RX_RES_PHY_FLAGS_BAND_24)) ?
  				NL80211_BAND_2GHZ : NL80211_BAND_5GHZ;
  	rx_status.freq =
  		ieee80211_channel_to_frequency(le16_to_cpu(sb->channel),
  					       rx_status.band);
  
  	/* copy the data */
  	skb_put_data(skb, sb->data, size);
  	memcpy(IEEE80211_SKB_RXCB(skb), &rx_status, sizeof(rx_status));
  
  	/* pass it as regular rx to mac80211 */
  	ieee80211_rx_napi(mvm->hw, NULL, skb, NULL);
  }
  
  void iwl_mvm_probe_resp_data_notif(struct iwl_mvm *mvm,
  				   struct iwl_rx_cmd_buffer *rxb)
  {
  	struct iwl_rx_packet *pkt = rxb_addr(rxb);
  	struct iwl_probe_resp_data_notif *notif = (void *)pkt->data;
  	struct iwl_probe_resp_data *old_data, *new_data;
  	int len = iwl_rx_packet_payload_len(pkt);
  	u32 id = le32_to_cpu(notif->mac_id);
  	struct ieee80211_vif *vif;
  	struct iwl_mvm_vif *mvmvif;
  
  	if (WARN_ON_ONCE(len < sizeof(*notif)))
  		return;
  
  	IWL_DEBUG_INFO(mvm, "Probe response data notif: noa %d, csa %d\n",
  		       notif->noa_active, notif->csa_counter);
  
  	vif = iwl_mvm_rcu_dereference_vif_id(mvm, id, false);
  	if (!vif)
  		return;
  
  	mvmvif = iwl_mvm_vif_from_mac80211(vif);
  
  	new_data = kzalloc(sizeof(*new_data), GFP_KERNEL);
  	if (!new_data)
  		return;
  
  	memcpy(&new_data->notif, notif, sizeof(new_data->notif));
  
  	/* noa_attr contains 1 reserved byte, need to substruct it */
  	new_data->noa_len = sizeof(struct ieee80211_vendor_ie) +
  			    sizeof(new_data->notif.noa_attr) - 1;
  
  	/*
  	 * If it's a one time NoA, only one descriptor is needed,
  	 * adjust the length according to len_low.
  	 */
  	if (new_data->notif.noa_attr.len_low ==
  	    sizeof(struct ieee80211_p2p_noa_desc) + 2)
  		new_data->noa_len -= sizeof(struct ieee80211_p2p_noa_desc);
  
  	old_data = rcu_dereference_protected(mvmvif->probe_resp_data,
  					lockdep_is_held(&mvmvif->mvm->mutex));
  	rcu_assign_pointer(mvmvif->probe_resp_data, new_data);
  
  	if (old_data)
  		kfree_rcu(old_data, rcu_head);
  
  	if (notif->csa_counter != IWL_PROBE_RESP_DATA_NO_CSA &&
  	    notif->csa_counter >= 1)
  		ieee80211_csa_set_counter(vif, notif->csa_counter);
  }
  
  void iwl_mvm_channel_switch_noa_notif(struct iwl_mvm *mvm,
  				      struct iwl_rx_cmd_buffer *rxb)
  {
  	struct iwl_rx_packet *pkt = rxb_addr(rxb);
  	struct iwl_channel_switch_noa_notif *notif = (void *)pkt->data;
  	struct ieee80211_vif *csa_vif, *vif;
  	struct iwl_mvm_vif *mvmvif;
  	int len = iwl_rx_packet_payload_len(pkt);
  	u32 id_n_color, csa_id, mac_id;
  
  	if (WARN_ON_ONCE(len < sizeof(*notif)))
  		return;
  
  	id_n_color = le32_to_cpu(notif->id_and_color);
  	mac_id = id_n_color & FW_CTXT_ID_MSK;
  
  	if (WARN_ON_ONCE(mac_id >= NUM_MAC_INDEX_DRIVER))
  		return;
  
  	rcu_read_lock();
  	vif = rcu_dereference(mvm->vif_id_to_mac[mac_id]);
  	mvmvif = iwl_mvm_vif_from_mac80211(vif);
  
  	switch (vif->type) {
  	case NL80211_IFTYPE_AP:
  		csa_vif = rcu_dereference(mvm->csa_vif);
  		if (WARN_ON(!csa_vif || !csa_vif->csa_active ||
  			    csa_vif != vif))
  			goto out_unlock;
  
  		csa_id = FW_CMD_ID_AND_COLOR(mvmvif->id, mvmvif->color);
  		if (WARN(csa_id != id_n_color,
  			 "channel switch noa notification on unexpected vif (csa_vif=%d, notif=%d)",
  			 csa_id, id_n_color))
  			goto out_unlock;
  
  		IWL_DEBUG_INFO(mvm, "Channel Switch Started Notification\n");
  
  		schedule_delayed_work(&mvm->cs_tx_unblock_dwork,
  				      msecs_to_jiffies(IWL_MVM_CS_UNBLOCK_TX_TIMEOUT *
  						       csa_vif->bss_conf.beacon_int));
  
  		ieee80211_csa_finish(csa_vif);
  
  		rcu_read_unlock();
  
  		RCU_INIT_POINTER(mvm->csa_vif, NULL);
  		return;
  	case NL80211_IFTYPE_STATION:
  		if (!fw_has_capa(&mvm->fw->ucode_capa,
  				 IWL_UCODE_TLV_CAPA_CHANNEL_SWITCH_CMD))
  			iwl_mvm_csa_client_absent(mvm, vif);
  		cancel_delayed_work(&mvmvif->csa_work);
  		ieee80211_chswitch_done(vif, true);
  		break;
  	default:
  		/* should never happen */
  		WARN_ON_ONCE(1);
  		break;
  	}
  out_unlock:
  	rcu_read_unlock();
  }
  
  void iwl_mvm_rx_missed_vap_notif(struct iwl_mvm *mvm,
  				 struct iwl_rx_cmd_buffer *rxb)
  {
  	struct iwl_rx_packet *pkt = rxb_addr(rxb);
  	struct iwl_missed_vap_notif *mb = (void *)pkt->data;
  	struct ieee80211_vif *vif;
  	u32 id = le32_to_cpu(mb->mac_id);
  
  	IWL_DEBUG_INFO(mvm,
  		       "missed_vap notify mac_id=%u, num_beacon_intervals_elapsed=%u, profile_periodicity=%u\n",
  		       le32_to_cpu(mb->mac_id),
  		       mb->num_beacon_intervals_elapsed,
  		       mb->profile_periodicity);
  
  	rcu_read_lock();
  
  	vif = iwl_mvm_rcu_dereference_vif_id(mvm, id, true);
  	if (vif)
  		iwl_mvm_connection_loss(mvm, vif, "missed vap beacon");
  
  	rcu_read_unlock();
  }
  