mac80211.c 127.8 KB
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/******************************************************************************
 *
 * 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
 *
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 * Copyright(c) 2012 - 2014 Intel Corporation. All rights reserved.
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 * Copyright(c) 2013 - 2015 Intel Mobile Communications GmbH
 * Copyright(c) 2016 - 2017 Intel Deutschland GmbH
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 * Copyright(c) 2018        Intel Corporation
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 *
 * 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
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 * in the file called COPYING.
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 *
 * Contact Information:
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 *  Intel Linux Wireless <linuxwifi@intel.com>
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 * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
 *
 * BSD LICENSE
 *
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 * Copyright(c) 2012 - 2014 Intel Corporation. All rights reserved.
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 * Copyright(c) 2013 - 2015 Intel Mobile Communications GmbH
 * Copyright(c) 2016 - 2017 Intel Deutschland GmbH
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 * Copyright(c) 2018        Intel Corporation
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 * 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/kernel.h>
#include <linux/slab.h>
#include <linux/skbuff.h>
#include <linux/netdevice.h>
#include <linux/etherdevice.h>
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#include <linux/ip.h>
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#include <linux/if_arp.h>
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#include <linux/time.h>
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#include <net/mac80211.h>
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#include <net/ieee80211_radiotap.h>
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#include <net/tcp.h>
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#include "iwl-op-mode.h"
#include "iwl-io.h"
#include "mvm.h"
#include "sta.h"
#include "time-event.h"
#include "iwl-eeprom-parse.h"
#include "iwl-phy-db.h"
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#include "testmode.h"
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#include "fw/error-dump.h"
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#include "iwl-prph.h"
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#include "iwl-nvm-parse.h"
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static const struct ieee80211_iface_limit iwl_mvm_limits[] = {
	{
		.max = 1,
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		.types = BIT(NL80211_IFTYPE_STATION),
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	},
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	{
		.max = 1,
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		.types = BIT(NL80211_IFTYPE_AP) |
			BIT(NL80211_IFTYPE_P2P_CLIENT) |
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			BIT(NL80211_IFTYPE_P2P_GO),
	},
	{
		.max = 1,
		.types = BIT(NL80211_IFTYPE_P2P_DEVICE),
	},
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};

static const struct ieee80211_iface_combination iwl_mvm_iface_combinations[] = {
	{
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		.num_different_channels = 2,
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		.max_interfaces = 3,
		.limits = iwl_mvm_limits,
		.n_limits = ARRAY_SIZE(iwl_mvm_limits),
	},
};

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#ifdef CONFIG_IWLWIFI_BCAST_FILTERING
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/*
 * Use the reserved field to indicate magic values.
 * these values will only be used internally by the driver,
 * and won't make it to the fw (reserved will be 0).
 * BC_FILTER_MAGIC_IP - configure the val of this attribute to
 *	be the vif's ip address. in case there is not a single
 *	ip address (0, or more than 1), this attribute will
 *	be skipped.
 * BC_FILTER_MAGIC_MAC - set the val of this attribute to
 *	the LSB bytes of the vif's mac address
 */
enum {
	BC_FILTER_MAGIC_NONE = 0,
	BC_FILTER_MAGIC_IP,
	BC_FILTER_MAGIC_MAC,
};

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static const struct iwl_fw_bcast_filter iwl_mvm_default_bcast_filters[] = {
	{
		/* arp */
		.discard = 0,
		.frame_type = BCAST_FILTER_FRAME_TYPE_ALL,
		.attrs = {
			{
				/* frame type - arp, hw type - ethernet */
				.offset_type =
					BCAST_FILTER_OFFSET_PAYLOAD_START,
				.offset = sizeof(rfc1042_header),
				.val = cpu_to_be32(0x08060001),
				.mask = cpu_to_be32(0xffffffff),
			},
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			{
				/* arp dest ip */
				.offset_type =
					BCAST_FILTER_OFFSET_PAYLOAD_START,
				.offset = sizeof(rfc1042_header) + 2 +
					  sizeof(struct arphdr) +
					  ETH_ALEN + sizeof(__be32) +
					  ETH_ALEN,
				.mask = cpu_to_be32(0xffffffff),
				/* mark it as special field */
				.reserved1 = cpu_to_le16(BC_FILTER_MAGIC_IP),
			},
		},
	},
	{
		/* dhcp offer bcast */
		.discard = 0,
		.frame_type = BCAST_FILTER_FRAME_TYPE_IPV4,
		.attrs = {
			{
				/* udp dest port - 68 (bootp client)*/
				.offset_type = BCAST_FILTER_OFFSET_IP_END,
				.offset = offsetof(struct udphdr, dest),
				.val = cpu_to_be32(0x00440000),
				.mask = cpu_to_be32(0xffff0000),
			},
			{
				/* dhcp - lsb bytes of client hw address */
				.offset_type = BCAST_FILTER_OFFSET_IP_END,
				.offset = 38,
				.mask = cpu_to_be32(0xffffffff),
				/* mark it as special field */
				.reserved1 = cpu_to_le16(BC_FILTER_MAGIC_MAC),
			},
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		},
	},
	/* last filter must be empty */
	{},
};
#endif

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void iwl_mvm_ref(struct iwl_mvm *mvm, enum iwl_mvm_ref_type ref_type)
{
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	if (!iwl_mvm_is_d0i3_supported(mvm))
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		return;

	IWL_DEBUG_RPM(mvm, "Take mvm reference - type %d\n", ref_type);
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	spin_lock_bh(&mvm->refs_lock);
	mvm->refs[ref_type]++;
	spin_unlock_bh(&mvm->refs_lock);
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	iwl_trans_ref(mvm->trans);
}

void iwl_mvm_unref(struct iwl_mvm *mvm, enum iwl_mvm_ref_type ref_type)
{
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	if (!iwl_mvm_is_d0i3_supported(mvm))
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		return;

	IWL_DEBUG_RPM(mvm, "Leave mvm reference - type %d\n", ref_type);
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	spin_lock_bh(&mvm->refs_lock);
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	if (WARN_ON(!mvm->refs[ref_type])) {
		spin_unlock_bh(&mvm->refs_lock);
		return;
	}
	mvm->refs[ref_type]--;
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	spin_unlock_bh(&mvm->refs_lock);
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	iwl_trans_unref(mvm->trans);
}

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static void iwl_mvm_unref_all_except(struct iwl_mvm *mvm,
				     enum iwl_mvm_ref_type except_ref)
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{
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	int i, j;
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	if (!iwl_mvm_is_d0i3_supported(mvm))
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		return;

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	spin_lock_bh(&mvm->refs_lock);
	for (i = 0; i < IWL_MVM_REF_COUNT; i++) {
		if (except_ref == i || !mvm->refs[i])
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			continue;

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		IWL_DEBUG_RPM(mvm, "Cleanup: remove mvm ref type %d (%d)\n",
			      i, mvm->refs[i]);
		for (j = 0; j < mvm->refs[i]; j++)
			iwl_trans_unref(mvm->trans);
		mvm->refs[i] = 0;
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	}
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	spin_unlock_bh(&mvm->refs_lock);
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}

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bool iwl_mvm_ref_taken(struct iwl_mvm *mvm)
{
	int i;
	bool taken = false;

	if (!iwl_mvm_is_d0i3_supported(mvm))
		return true;

	spin_lock_bh(&mvm->refs_lock);
	for (i = 0; i < IWL_MVM_REF_COUNT; i++) {
		if (mvm->refs[i]) {
			taken = true;
			break;
		}
	}
	spin_unlock_bh(&mvm->refs_lock);

	return taken;
}

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int iwl_mvm_ref_sync(struct iwl_mvm *mvm, enum iwl_mvm_ref_type ref_type)
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{
	iwl_mvm_ref(mvm, ref_type);

	if (!wait_event_timeout(mvm->d0i3_exit_waitq,
				!test_bit(IWL_MVM_STATUS_IN_D0I3, &mvm->status),
				HZ)) {
		WARN_ON_ONCE(1);
		iwl_mvm_unref(mvm, ref_type);
		return -EIO;
	}

	return 0;
}

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static void iwl_mvm_reset_phy_ctxts(struct iwl_mvm *mvm)
{
	int i;

	memset(mvm->phy_ctxts, 0, sizeof(mvm->phy_ctxts));
	for (i = 0; i < NUM_PHY_CTX; i++) {
		mvm->phy_ctxts[i].id = i;
		mvm->phy_ctxts[i].ref = 0;
	}
}

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struct ieee80211_regdomain *iwl_mvm_get_regdomain(struct wiphy *wiphy,
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						  const char *alpha2,
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						  enum iwl_mcc_source src_id,
						  bool *changed)
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{
	struct ieee80211_regdomain *regd = NULL;
	struct ieee80211_hw *hw = wiphy_to_ieee80211_hw(wiphy);
	struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
	struct iwl_mcc_update_resp *resp;

	IWL_DEBUG_LAR(mvm, "Getting regdomain data for %s from FW\n", alpha2);

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	lockdep_assert_held(&mvm->mutex);
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	resp = iwl_mvm_update_mcc(mvm, alpha2, src_id);
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	if (IS_ERR_OR_NULL(resp)) {
		IWL_DEBUG_LAR(mvm, "Could not get update from FW %d\n",
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			      PTR_ERR_OR_ZERO(resp));
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		goto out;
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	}

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	if (changed)
		*changed = (resp->status == MCC_RESP_NEW_CHAN_PROFILE);

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	regd = iwl_parse_nvm_mcc_info(mvm->trans->dev, mvm->cfg,
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				      __le32_to_cpu(resp->n_channels),
				      resp->channels,
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				      __le16_to_cpu(resp->mcc),
				      __le16_to_cpu(resp->geo_info));
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	/* Store the return source id */
	src_id = resp->source_id;
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	kfree(resp);
	if (IS_ERR_OR_NULL(regd)) {
		IWL_DEBUG_LAR(mvm, "Could not get parse update from FW %d\n",
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			      PTR_ERR_OR_ZERO(regd));
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		goto out;
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	}

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	IWL_DEBUG_LAR(mvm, "setting alpha2 from FW to %s (0x%x, 0x%x) src=%d\n",
		      regd->alpha2, regd->alpha2[0], regd->alpha2[1], src_id);
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	mvm->lar_regdom_set = true;
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	mvm->mcc_src = src_id;
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out:
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	return regd;
}

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void iwl_mvm_update_changed_regdom(struct iwl_mvm *mvm)
{
	bool changed;
	struct ieee80211_regdomain *regd;

	if (!iwl_mvm_is_lar_supported(mvm))
		return;

	regd = iwl_mvm_get_current_regdomain(mvm, &changed);
	if (!IS_ERR_OR_NULL(regd)) {
		/* only update the regulatory core if changed */
		if (changed)
			regulatory_set_wiphy_regd(mvm->hw->wiphy, regd);

		kfree(regd);
	}
}

struct ieee80211_regdomain *iwl_mvm_get_current_regdomain(struct iwl_mvm *mvm,
							  bool *changed)
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{
	return iwl_mvm_get_regdomain(mvm->hw->wiphy, "ZZ",
				     iwl_mvm_is_wifi_mcc_supported(mvm) ?
				     MCC_SOURCE_GET_CURRENT :
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				     MCC_SOURCE_OLD_FW, changed);
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}

int iwl_mvm_init_fw_regd(struct iwl_mvm *mvm)
{
	enum iwl_mcc_source used_src;
	struct ieee80211_regdomain *regd;
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	int ret;
	bool changed;
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	const struct ieee80211_regdomain *r =
			rtnl_dereference(mvm->hw->wiphy->regd);

	if (!r)
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		return -ENOENT;
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	/* save the last source in case we overwrite it below */
	used_src = mvm->mcc_src;
	if (iwl_mvm_is_wifi_mcc_supported(mvm)) {
		/* Notify the firmware we support wifi location updates */
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		regd = iwl_mvm_get_current_regdomain(mvm, NULL);
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		if (!IS_ERR_OR_NULL(regd))
			kfree(regd);
	}

	/* Now set our last stored MCC and source */
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	regd = iwl_mvm_get_regdomain(mvm->hw->wiphy, r->alpha2, used_src,
				     &changed);
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	if (IS_ERR_OR_NULL(regd))
		return -EIO;

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	/* update cfg80211 if the regdomain was changed */
	if (changed)
		ret = regulatory_set_wiphy_regd_sync_rtnl(mvm->hw->wiphy, regd);
	else
		ret = 0;
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	kfree(regd);
	return ret;
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}

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int iwl_mvm_mac_setup_register(struct iwl_mvm *mvm)
{
	struct ieee80211_hw *hw = mvm->hw;
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	int num_mac, ret, i;
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	static const u32 mvm_ciphers[] = {
		WLAN_CIPHER_SUITE_WEP40,
		WLAN_CIPHER_SUITE_WEP104,
		WLAN_CIPHER_SUITE_TKIP,
		WLAN_CIPHER_SUITE_CCMP,
	};
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	/* Tell mac80211 our characteristics */
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	ieee80211_hw_set(hw, SIGNAL_DBM);
	ieee80211_hw_set(hw, SPECTRUM_MGMT);
	ieee80211_hw_set(hw, REPORTS_TX_ACK_STATUS);
	ieee80211_hw_set(hw, QUEUE_CONTROL);
	ieee80211_hw_set(hw, WANT_MONITOR_VIF);
	ieee80211_hw_set(hw, SUPPORTS_PS);
	ieee80211_hw_set(hw, SUPPORTS_DYNAMIC_PS);
	ieee80211_hw_set(hw, AMPDU_AGGREGATION);
	ieee80211_hw_set(hw, TIMING_BEACON_ONLY);
	ieee80211_hw_set(hw, CONNECTION_MONITOR);
	ieee80211_hw_set(hw, CHANCTX_STA_CSA);
	ieee80211_hw_set(hw, SUPPORT_FAST_XMIT);
	ieee80211_hw_set(hw, SUPPORTS_CLONED_SKBS);
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	ieee80211_hw_set(hw, SUPPORTS_AMSDU_IN_AMPDU);
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	ieee80211_hw_set(hw, NEEDS_UNIQUE_STA_ADDR);
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	ieee80211_hw_set(hw, DEAUTH_NEED_MGD_TX_PREP);
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	if (iwl_mvm_has_tlc_offload(mvm)) {
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		ieee80211_hw_set(hw, TX_AMPDU_SETUP_IN_HW);
		ieee80211_hw_set(hw, HAS_RATE_CONTROL);
	}

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	if (iwl_mvm_has_new_rx_api(mvm))
		ieee80211_hw_set(hw, SUPPORTS_REORDERING_BUFFER);
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	if (fw_has_capa(&mvm->fw->ucode_capa,
			IWL_UCODE_TLV_CAPA_STA_PM_NOTIF)) {
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		ieee80211_hw_set(hw, AP_LINK_PS);
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	} else if (WARN_ON(iwl_mvm_has_new_tx_api(mvm))) {
		/*
		 * we absolutely need this for the new TX API since that comes
		 * with many more queues than the current code can deal with
		 * for station powersave
		 */
		return -EINVAL;
	}
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	if (mvm->trans->num_rx_queues > 1)
		ieee80211_hw_set(hw, USES_RSS);

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	if (mvm->trans->max_skb_frags)
		hw->netdev_features = NETIF_F_HIGHDMA | NETIF_F_SG;

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	hw->queues = IEEE80211_MAX_QUEUES;
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	hw->offchannel_tx_hw_queue = IWL_MVM_OFFCHANNEL_QUEUE;
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	hw->radiotap_mcs_details |= IEEE80211_RADIOTAP_MCS_HAVE_FEC |
				    IEEE80211_RADIOTAP_MCS_HAVE_STBC;
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	hw->radiotap_vht_details |= IEEE80211_RADIOTAP_VHT_KNOWN_STBC |
		IEEE80211_RADIOTAP_VHT_KNOWN_BEAMFORMED;
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	hw->radiotap_timestamp.units_pos =
		IEEE80211_RADIOTAP_TIMESTAMP_UNIT_US |
		IEEE80211_RADIOTAP_TIMESTAMP_SPOS_PLCP_SIG_ACQ;
	/* this is the case for CCK frames, it's better (only 8) for OFDM */
	hw->radiotap_timestamp.accuracy = 22;

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	if (!iwl_mvm_has_tlc_offload(mvm))
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		hw->rate_control_algorithm = RS_NAME;

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	hw->uapsd_queues = IWL_MVM_UAPSD_QUEUES;
	hw->uapsd_max_sp_len = IWL_UAPSD_MAX_SP;
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	BUILD_BUG_ON(ARRAY_SIZE(mvm->ciphers) < ARRAY_SIZE(mvm_ciphers) + 6);
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	memcpy(mvm->ciphers, mvm_ciphers, sizeof(mvm_ciphers));
	hw->wiphy->n_cipher_suites = ARRAY_SIZE(mvm_ciphers);
	hw->wiphy->cipher_suites = mvm->ciphers;

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	if (iwl_mvm_has_new_rx_api(mvm)) {
		mvm->ciphers[hw->wiphy->n_cipher_suites] =
			WLAN_CIPHER_SUITE_GCMP;
		hw->wiphy->n_cipher_suites++;
		mvm->ciphers[hw->wiphy->n_cipher_suites] =
			WLAN_CIPHER_SUITE_GCMP_256;
		hw->wiphy->n_cipher_suites++;
	}

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	/* Enable 11w if software crypto is not enabled (as the
	 * firmware will interpret some mgmt packets, so enabling it
	 * with software crypto isn't safe).
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	 */
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	if (!iwlwifi_mod_params.swcrypto) {
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		ieee80211_hw_set(hw, MFP_CAPABLE);
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		mvm->ciphers[hw->wiphy->n_cipher_suites] =
			WLAN_CIPHER_SUITE_AES_CMAC;
		hw->wiphy->n_cipher_suites++;
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		if (iwl_mvm_has_new_rx_api(mvm)) {
			mvm->ciphers[hw->wiphy->n_cipher_suites] =
				WLAN_CIPHER_SUITE_BIP_GMAC_128;
			hw->wiphy->n_cipher_suites++;
			mvm->ciphers[hw->wiphy->n_cipher_suites] =
				WLAN_CIPHER_SUITE_BIP_GMAC_256;
			hw->wiphy->n_cipher_suites++;
		}
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	}

	/* currently FW API supports only one optional cipher scheme */
	if (mvm->fw->cs[0].cipher) {
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		const struct iwl_fw_cipher_scheme *fwcs = &mvm->fw->cs[0];
		struct ieee80211_cipher_scheme *cs = &mvm->cs[0];

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		mvm->hw->n_cipher_schemes = 1;
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		cs->cipher = le32_to_cpu(fwcs->cipher);
		cs->iftype = BIT(NL80211_IFTYPE_STATION);
		cs->hdr_len = fwcs->hdr_len;
		cs->pn_len = fwcs->pn_len;
		cs->pn_off = fwcs->pn_off;
		cs->key_idx_off = fwcs->key_idx_off;
		cs->key_idx_mask = fwcs->key_idx_mask;
		cs->key_idx_shift = fwcs->key_idx_shift;
		cs->mic_len = fwcs->mic_len;

		mvm->hw->cipher_schemes = mvm->cs;
		mvm->ciphers[hw->wiphy->n_cipher_suites] = cs->cipher;
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		hw->wiphy->n_cipher_suites++;
	}
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	ieee80211_hw_set(hw, SINGLE_SCAN_ON_ALL_BANDS);
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	hw->wiphy->features |=
		NL80211_FEATURE_SCHED_SCAN_RANDOM_MAC_ADDR |
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		NL80211_FEATURE_SCAN_RANDOM_MAC_ADDR |
		NL80211_FEATURE_ND_RANDOM_MAC_ADDR;
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	hw->sta_data_size = sizeof(struct iwl_mvm_sta);
	hw->vif_data_size = sizeof(struct iwl_mvm_vif);
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	hw->chanctx_data_size = sizeof(u16);
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	hw->wiphy->interface_modes = BIT(NL80211_IFTYPE_STATION) |
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		BIT(NL80211_IFTYPE_P2P_CLIENT) |
		BIT(NL80211_IFTYPE_AP) |
		BIT(NL80211_IFTYPE_P2P_GO) |
542 543
		BIT(NL80211_IFTYPE_P2P_DEVICE) |
		BIT(NL80211_IFTYPE_ADHOC);
J
Johannes Berg 已提交
544

545
	hw->wiphy->flags |= WIPHY_FLAG_IBSS_RSN;
546 547 548 549 550 551
	hw->wiphy->regulatory_flags |= REGULATORY_ENABLE_RELAX_NO_IR;
	if (iwl_mvm_is_lar_supported(mvm))
		hw->wiphy->regulatory_flags |= REGULATORY_WIPHY_SELF_MANAGED;
	else
		hw->wiphy->regulatory_flags |= REGULATORY_CUSTOM_REG |
					       REGULATORY_DISABLE_BEACON_HINTS;
J
Johannes Berg 已提交
552

553
	hw->wiphy->flags |= WIPHY_FLAG_AP_UAPSD;
554
	hw->wiphy->flags |= WIPHY_FLAG_HAS_CHANNEL_SWITCH;
555

J
Johannes Berg 已提交
556 557 558 559
	hw->wiphy->iface_combinations = iwl_mvm_iface_combinations;
	hw->wiphy->n_iface_combinations =
		ARRAY_SIZE(iwl_mvm_iface_combinations);

560
	hw->wiphy->max_remain_on_channel_duration = 10000;
J
Johannes Berg 已提交
561
	hw->max_listen_interval = IWL_CONN_MAX_LISTEN_INTERVAL;
562 563
	/* we can compensate an offset of up to 3 channels = 15 MHz */
	hw->wiphy->max_adj_channel_rssi_comp = 3 * 5;
J
Johannes Berg 已提交
564 565 566 567 568

	/* Extract MAC address */
	memcpy(mvm->addresses[0].addr, mvm->nvm_data->hw_addr, ETH_ALEN);
	hw->wiphy->addresses = mvm->addresses;
	hw->wiphy->n_addresses = 1;
569 570 571 572 573 574 575

	/* Extract additional MAC addresses if available */
	num_mac = (mvm->nvm_data->n_hw_addrs > 1) ?
		min(IWL_MVM_MAX_ADDRESSES, mvm->nvm_data->n_hw_addrs) : 1;

	for (i = 1; i < num_mac; i++) {
		memcpy(mvm->addresses[i].addr, mvm->addresses[i-1].addr,
J
Johannes Berg 已提交
576
		       ETH_ALEN);
577
		mvm->addresses[i].addr[5]++;
J
Johannes Berg 已提交
578 579 580
		hw->wiphy->n_addresses++;
	}

581 582
	iwl_mvm_reset_phy_ctxts(mvm);

583
	hw->wiphy->max_scan_ie_len = iwl_mvm_max_scan_ie_len(mvm);
584

J
Johannes Berg 已提交
585 586
	hw->wiphy->max_scan_ssids = PROBE_OPTION_MAX;

587
	BUILD_BUG_ON(IWL_MVM_SCAN_STOPPING_MASK & IWL_MVM_SCAN_MASK);
588 589 590
	BUILD_BUG_ON(IWL_MVM_MAX_UMAC_SCANS > HWEIGHT32(IWL_MVM_SCAN_MASK) ||
		     IWL_MVM_MAX_LMAC_SCANS > HWEIGHT32(IWL_MVM_SCAN_MASK));

591
	if (fw_has_capa(&mvm->fw->ucode_capa, IWL_UCODE_TLV_CAPA_UMAC_SCAN))
592 593 594 595
		mvm->max_scans = IWL_MVM_MAX_UMAC_SCANS;
	else
		mvm->max_scans = IWL_MVM_MAX_LMAC_SCANS;

596 597 598 599 600 601
	if (mvm->nvm_data->bands[NL80211_BAND_2GHZ].n_channels)
		hw->wiphy->bands[NL80211_BAND_2GHZ] =
			&mvm->nvm_data->bands[NL80211_BAND_2GHZ];
	if (mvm->nvm_data->bands[NL80211_BAND_5GHZ].n_channels) {
		hw->wiphy->bands[NL80211_BAND_5GHZ] =
			&mvm->nvm_data->bands[NL80211_BAND_5GHZ];
J
Johannes Berg 已提交
602

603 604 605 606
		if (fw_has_capa(&mvm->fw->ucode_capa,
				IWL_UCODE_TLV_CAPA_BEAMFORMER) &&
		    fw_has_api(&mvm->fw->ucode_capa,
			       IWL_UCODE_TLV_API_LQ_SS_PARAMS))
607
			hw->wiphy->bands[NL80211_BAND_5GHZ]->vht_cap.cap |=
608 609 610
				IEEE80211_VHT_CAP_SU_BEAMFORMER_CAPABLE;
	}

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611 612
	hw->wiphy->hw_version = mvm->trans->hw_id;

613
	if (iwlmvm_mod_params.power_scheme != IWL_POWER_SCHEME_CAM)
J
Johannes Berg 已提交
614 615 616 617
		hw->wiphy->flags |= WIPHY_FLAG_PS_ON_BY_DEFAULT;
	else
		hw->wiphy->flags &= ~WIPHY_FLAG_PS_ON_BY_DEFAULT;

618
	hw->wiphy->max_sched_scan_reqs = 1;
619 620 621 622 623
	hw->wiphy->max_sched_scan_ssids = PROBE_OPTION_MAX;
	hw->wiphy->max_match_sets = IWL_SCAN_MAX_PROFILES;
	/* we create the 802.11 header and zero length SSID IE. */
	hw->wiphy->max_sched_scan_ie_len =
		SCAN_OFFLOAD_PROBE_REQ_SIZE - 24 - 2;
624 625 626 627 628 629 630 631
	hw->wiphy->max_sched_scan_plans = IWL_MAX_SCHED_SCAN_PLANS;
	hw->wiphy->max_sched_scan_plan_interval = U16_MAX;

	/*
	 * the firmware uses u8 for num of iterations, but 0xff is saved for
	 * infinite loop, so the maximum number of iterations is actually 254.
	 */
	hw->wiphy->max_sched_scan_plan_iterations = 254;
632

J
Johannes Berg 已提交
633
	hw->wiphy->features |= NL80211_FEATURE_P2P_GO_CTWIN |
634
			       NL80211_FEATURE_LOW_PRIORITY_SCAN |
635
			       NL80211_FEATURE_P2P_GO_OPPPS |
636
			       NL80211_FEATURE_AP_MODE_CHAN_WIDTH_CHANGE |
637
			       NL80211_FEATURE_DYNAMIC_SMPS |
638 639
			       NL80211_FEATURE_STATIC_SMPS |
			       NL80211_FEATURE_SUPPORTS_WMM_ADMISSION;
J
Johannes Berg 已提交
640

641 642
	if (fw_has_capa(&mvm->fw->ucode_capa,
			IWL_UCODE_TLV_CAPA_TXPOWER_INSERTION_SUPPORT))
643
		hw->wiphy->features |= NL80211_FEATURE_TX_POWER_INSERTION;
644 645
	if (fw_has_capa(&mvm->fw->ucode_capa,
			IWL_UCODE_TLV_CAPA_QUIET_PERIOD_SUPPORT))
646
		hw->wiphy->features |= NL80211_FEATURE_QUIET;
647

648 649
	if (fw_has_capa(&mvm->fw->ucode_capa,
			IWL_UCODE_TLV_CAPA_DS_PARAM_SET_IE_SUPPORT))
650 651 652
		hw->wiphy->features |=
			NL80211_FEATURE_DS_PARAM_SET_IE_IN_PROBES;

653 654
	if (fw_has_capa(&mvm->fw->ucode_capa,
			IWL_UCODE_TLV_CAPA_WFA_TPC_REP_IE_SUPPORT))
655 656
		hw->wiphy->features |= NL80211_FEATURE_WFA_TPC_IE_IN_PROBES;

657 658 659 660 661 662 663 664 665 666
	if (fw_has_api(&mvm->fw->ucode_capa,
		       IWL_UCODE_TLV_API_SCAN_TSF_REPORT)) {
		wiphy_ext_feature_set(hw->wiphy,
				      NL80211_EXT_FEATURE_SCAN_START_TIME);
		wiphy_ext_feature_set(hw->wiphy,
				      NL80211_EXT_FEATURE_BSS_PARENT_TSF);
		wiphy_ext_feature_set(hw->wiphy,
				      NL80211_EXT_FEATURE_SET_SCAN_DWELL);
	}

Z
Zamir, Roee 已提交
667 668 669 670 671 672 673 674 675 676 677
	if (iwl_mvm_is_oce_supported(mvm)) {
		wiphy_ext_feature_set(hw->wiphy,
			NL80211_EXT_FEATURE_ACCEPT_BCAST_PROBE_RESP);
		wiphy_ext_feature_set(hw->wiphy,
			NL80211_EXT_FEATURE_FILS_MAX_CHANNEL_TIME);
		wiphy_ext_feature_set(hw->wiphy,
			NL80211_EXT_FEATURE_OCE_PROBE_REQ_DEFERRAL_SUPPRESSION);
		wiphy_ext_feature_set(hw->wiphy,
			NL80211_EXT_FEATURE_OCE_PROBE_REQ_HIGH_TX_RATE);
	}

J
Johannes Berg 已提交
678 679 680
	mvm->rts_threshold = IEEE80211_MAX_RTS_THRESHOLD;

#ifdef CONFIG_PM_SLEEP
681 682 683 684
	if (iwl_mvm_is_d0i3_supported(mvm) &&
	    device_can_wakeup(mvm->trans->dev)) {
		mvm->wowlan.flags = WIPHY_WOWLAN_ANY;
		hw->wiphy->wowlan = &mvm->wowlan;
685 686
	}

687
	if (mvm->fw->img[IWL_UCODE_WOWLAN].num_sec &&
J
Johannes Berg 已提交
688 689 690
	    mvm->trans->ops->d3_suspend &&
	    mvm->trans->ops->d3_resume &&
	    device_can_wakeup(mvm->trans->dev)) {
691 692 693 694 695
		mvm->wowlan.flags |= WIPHY_WOWLAN_MAGIC_PKT |
				     WIPHY_WOWLAN_DISCONNECT |
				     WIPHY_WOWLAN_EAP_IDENTITY_REQ |
				     WIPHY_WOWLAN_RFKILL_RELEASE |
				     WIPHY_WOWLAN_NET_DETECT;
696
		if (!iwlwifi_mod_params.swcrypto)
697 698 699 700 701 702 703
			mvm->wowlan.flags |= WIPHY_WOWLAN_SUPPORTS_GTK_REKEY |
					     WIPHY_WOWLAN_GTK_REKEY_FAILURE |
					     WIPHY_WOWLAN_4WAY_HANDSHAKE;

		mvm->wowlan.n_patterns = IWL_WOWLAN_MAX_PATTERNS;
		mvm->wowlan.pattern_min_len = IWL_WOWLAN_MIN_PATTERN_LEN;
		mvm->wowlan.pattern_max_len = IWL_WOWLAN_MAX_PATTERN_LEN;
704
		mvm->wowlan.max_nd_match_sets = IWL_SCAN_MAX_PROFILES;
705
		hw->wiphy->wowlan = &mvm->wowlan;
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Johannes Berg 已提交
706 707 708
	}
#endif

709 710 711 712 713
#ifdef CONFIG_IWLWIFI_BCAST_FILTERING
	/* assign default bcast filtering configuration */
	mvm->bcast_filters = iwl_mvm_default_bcast_filters;
#endif

J
Johannes Berg 已提交
714 715 716 717
	ret = iwl_mvm_leds_init(mvm);
	if (ret)
		return ret;

718 719
	if (fw_has_capa(&mvm->fw->ucode_capa,
			IWL_UCODE_TLV_CAPA_TDLS_SUPPORT)) {
A
Arik Nemtsov 已提交
720 721
		IWL_DEBUG_TDLS(mvm, "TDLS supported\n");
		hw->wiphy->flags |= WIPHY_FLAG_SUPPORTS_TDLS;
722
		ieee80211_hw_set(hw, TDLS_WIDER_BW);
A
Arik Nemtsov 已提交
723 724
	}

725 726
	if (fw_has_capa(&mvm->fw->ucode_capa,
			IWL_UCODE_TLV_CAPA_TDLS_CHANNEL_SWITCH)) {
727 728 729 730
		IWL_DEBUG_TDLS(mvm, "TDLS channel switch supported\n");
		hw->wiphy->features |= NL80211_FEATURE_TDLS_CHANNEL_SWITCH;
	}

731
	hw->netdev_features |= mvm->cfg->features;
732 733 734 735 736 737 738
	if (!iwl_mvm_is_csum_supported(mvm)) {
		hw->netdev_features &= ~(IWL_TX_CSUM_NETIF_FLAGS |
					 NETIF_F_RXCSUM);
		/* We may support SW TX CSUM */
		if (IWL_MVM_SW_TX_CSUM_OFFLOAD)
			hw->netdev_features |= IWL_TX_CSUM_NETIF_FLAGS;
	}
739

740 741 742
	ret = ieee80211_register_hw(mvm->hw);
	if (ret)
		iwl_mvm_leds_exit(mvm);
743
	mvm->init_status |= IWL_MVM_INIT_STATUS_REG_HW_INIT_COMPLETE;
744

745 746 747 748
	if (mvm->cfg->vht_mu_mimo_supported)
		wiphy_ext_feature_set(hw->wiphy,
				      NL80211_EXT_FEATURE_MU_MIMO_AIR_SNIFFER);

749
	return ret;
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Johannes Berg 已提交
750 751
}

752 753 754 755 756 757 758 759 760 761 762 763 764 765 766 767 768 769 770 771 772 773 774 775
static bool iwl_mvm_defer_tx(struct iwl_mvm *mvm,
			     struct ieee80211_sta *sta,
			     struct sk_buff *skb)
{
	struct iwl_mvm_sta *mvmsta;
	bool defer = false;

	/*
	 * double check the IN_D0I3 flag both before and after
	 * taking the spinlock, in order to prevent taking
	 * the spinlock when not needed.
	 */
	if (likely(!test_bit(IWL_MVM_STATUS_IN_D0I3, &mvm->status)))
		return false;

	spin_lock(&mvm->d0i3_tx_lock);
	/*
	 * testing the flag again ensures the skb dequeue
	 * loop (on d0i3 exit) hasn't run yet.
	 */
	if (!test_bit(IWL_MVM_STATUS_IN_D0I3, &mvm->status))
		goto out;

	mvmsta = iwl_mvm_sta_from_mac80211(sta);
776
	if (mvmsta->sta_id == IWL_MVM_INVALID_STA ||
777 778 779 780 781 782 783 784 785 786 787 788 789 790 791 792
	    mvmsta->sta_id != mvm->d0i3_ap_sta_id)
		goto out;

	__skb_queue_tail(&mvm->d0i3_tx, skb);
	ieee80211_stop_queues(mvm->hw);

	/* trigger wakeup */
	iwl_mvm_ref(mvm, IWL_MVM_REF_TX);
	iwl_mvm_unref(mvm, IWL_MVM_REF_TX);

	defer = true;
out:
	spin_unlock(&mvm->d0i3_tx_lock);
	return defer;
}

J
Johannes Berg 已提交
793 794 795 796 797
static void iwl_mvm_mac_tx(struct ieee80211_hw *hw,
			   struct ieee80211_tx_control *control,
			   struct sk_buff *skb)
{
	struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
798 799 800
	struct ieee80211_sta *sta = control->sta;
	struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
	struct ieee80211_hdr *hdr = (void *)skb->data;
J
Johannes Berg 已提交
801

802 803
	if (iwl_mvm_is_radio_killed(mvm)) {
		IWL_DEBUG_DROP(mvm, "Dropping - RF/CT KILL\n");
J
Johannes Berg 已提交
804 805 806
		goto drop;
	}

807
	if (info->hw_queue == IWL_MVM_OFFCHANNEL_QUEUE &&
808 809
	    !test_bit(IWL_MVM_STATUS_ROC_RUNNING, &mvm->status) &&
	    !test_bit(IWL_MVM_STATUS_ROC_AUX_RUNNING, &mvm->status))
J
Johannes Berg 已提交
810 811
		goto drop;

812 813 814 815 816
	/* treat non-bufferable MMPDUs on AP interfaces as broadcast */
	if ((info->control.vif->type == NL80211_IFTYPE_AP ||
	     info->control.vif->type == NL80211_IFTYPE_ADHOC) &&
	    ieee80211_is_mgmt(hdr->frame_control) &&
	    !ieee80211_is_bufferable_mmpdu(hdr->frame_control))
817 818 819
		sta = NULL;

	if (sta) {
820 821
		if (iwl_mvm_defer_tx(mvm, sta, skb))
			return;
822
		if (iwl_mvm_tx_skb(mvm, skb, sta))
J
Johannes Berg 已提交
823 824 825 826 827 828 829 830 831 832 833
			goto drop;
		return;
	}

	if (iwl_mvm_tx_skb_non_sta(mvm, skb))
		goto drop;
	return;
 drop:
	ieee80211_free_txskb(hw, skb);
}

834 835 836 837 838 839 840 841 842 843 844 845 846 847 848 849 850 851
static inline bool iwl_enable_rx_ampdu(const struct iwl_cfg *cfg)
{
	if (iwlwifi_mod_params.disable_11n & IWL_DISABLE_HT_RXAGG)
		return false;
	return true;
}

static inline bool iwl_enable_tx_ampdu(const struct iwl_cfg *cfg)
{
	if (iwlwifi_mod_params.disable_11n & IWL_DISABLE_HT_TXAGG)
		return false;
	if (iwlwifi_mod_params.disable_11n & IWL_ENABLE_HT_TXAGG)
		return true;

	/* enabled by default */
	return true;
}

852 853 854 855 856
#define CHECK_BA_TRIGGER(_mvm, _trig, _tid_bm, _tid, _fmt...)		\
	do {								\
		if (!(le16_to_cpu(_tid_bm) & BIT(_tid)))		\
			break;						\
		iwl_fw_dbg_collect_trig(&(_mvm)->fwrt, _trig, _fmt);	\
857 858 859 860 861 862 863 864 865 866 867 868 869 870 871 872
	} while (0)

static void
iwl_mvm_ampdu_check_trigger(struct iwl_mvm *mvm, struct ieee80211_vif *vif,
			    struct ieee80211_sta *sta, u16 tid, u16 rx_ba_ssn,
			    enum ieee80211_ampdu_mlme_action action)
{
	struct iwl_fw_dbg_trigger_tlv *trig;
	struct iwl_fw_dbg_trigger_ba *ba_trig;

	if (!iwl_fw_dbg_trigger_enabled(mvm->fw, FW_DBG_TRIGGER_BA))
		return;

	trig = iwl_fw_dbg_get_trigger(mvm->fw, FW_DBG_TRIGGER_BA);
	ba_trig = (void *)trig->data;

873 874
	if (!iwl_fw_dbg_trigger_check_stop(&mvm->fwrt,
					   ieee80211_vif_to_wdev(vif), trig))
875 876 877 878 879 880 881 882 883 884 885 886 887 888 889 890 891 892 893 894 895 896 897 898 899 900 901 902 903 904 905 906
		return;

	switch (action) {
	case IEEE80211_AMPDU_TX_OPERATIONAL: {
		struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta);
		struct iwl_mvm_tid_data *tid_data = &mvmsta->tid_data[tid];

		CHECK_BA_TRIGGER(mvm, trig, ba_trig->tx_ba_start, tid,
				 "TX AGG START: MAC %pM tid %d ssn %d\n",
				 sta->addr, tid, tid_data->ssn);
		break;
		}
	case IEEE80211_AMPDU_TX_STOP_CONT:
		CHECK_BA_TRIGGER(mvm, trig, ba_trig->tx_ba_stop, tid,
				 "TX AGG STOP: MAC %pM tid %d\n",
				 sta->addr, tid);
		break;
	case IEEE80211_AMPDU_RX_START:
		CHECK_BA_TRIGGER(mvm, trig, ba_trig->rx_ba_start, tid,
				 "RX AGG START: MAC %pM tid %d ssn %d\n",
				 sta->addr, tid, rx_ba_ssn);
		break;
	case IEEE80211_AMPDU_RX_STOP:
		CHECK_BA_TRIGGER(mvm, trig, ba_trig->rx_ba_stop, tid,
				 "RX AGG STOP: MAC %pM tid %d\n",
				 sta->addr, tid);
		break;
	default:
		break;
	}
}

J
Johannes Berg 已提交
907 908
static int iwl_mvm_mac_ampdu_action(struct ieee80211_hw *hw,
				    struct ieee80211_vif *vif,
909
				    struct ieee80211_ampdu_params *params)
J
Johannes Berg 已提交
910 911 912
{
	struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
	int ret;
913
	bool tx_agg_ref = false;
914 915 916 917
	struct ieee80211_sta *sta = params->sta;
	enum ieee80211_ampdu_mlme_action action = params->action;
	u16 tid = params->tid;
	u16 *ssn = &params->ssn;
918
	u16 buf_size = params->buf_size;
919
	bool amsdu = params->amsdu;
920
	u16 timeout = params->timeout;
J
Johannes Berg 已提交
921 922 923 924 925 926 927

	IWL_DEBUG_HT(mvm, "A-MPDU action on addr %pM tid %d: action %d\n",
		     sta->addr, tid, action);

	if (!(mvm->nvm_data->sku_cap_11n_enable))
		return -EACCES;

928
	/* return from D0i3 before starting a new Tx aggregation */
929 930 931 932 933 934
	switch (action) {
	case IEEE80211_AMPDU_TX_START:
	case IEEE80211_AMPDU_TX_STOP_CONT:
	case IEEE80211_AMPDU_TX_STOP_FLUSH:
	case IEEE80211_AMPDU_TX_STOP_FLUSH_CONT:
	case IEEE80211_AMPDU_TX_OPERATIONAL:
935
		/*
936 937 938 939 940 941
		 * for tx start, wait synchronously until D0i3 exit to
		 * get the correct sequence number for the tid.
		 * additionally, some other ampdu actions use direct
		 * target access, which is not handled automatically
		 * by the trans layer (unlike commands), so wait for
		 * d0i3 exit in these cases as well.
942
		 */
943 944 945 946 947
		ret = iwl_mvm_ref_sync(mvm, IWL_MVM_REF_TX_AGG);
		if (ret)
			return ret;

		tx_agg_ref = true;
948 949 950
		break;
	default:
		break;
951 952
	}

J
Johannes Berg 已提交
953 954 955 956
	mutex_lock(&mvm->mutex);

	switch (action) {
	case IEEE80211_AMPDU_RX_START:
957 958 959 960 961 962 963 964 965 966
		if (iwl_mvm_vif_from_mac80211(vif)->ap_sta_id ==
				iwl_mvm_sta_from_mac80211(sta)->sta_id) {
			struct iwl_mvm_vif *mvmvif;
			u16 macid = iwl_mvm_vif_from_mac80211(vif)->id;
			struct iwl_mvm_tcm_mac *mdata = &mvm->tcm.data[macid];

			mdata->opened_rx_ba_sessions = true;
			mvmvif = iwl_mvm_vif_from_mac80211(vif);
			cancel_delayed_work(&mvmvif->uapsd_nonagg_detected_wk);
		}
967
		if (!iwl_enable_rx_ampdu(mvm->cfg)) {
J
Johannes Berg 已提交
968 969 970
			ret = -EINVAL;
			break;
		}
971 972
		ret = iwl_mvm_sta_rx_agg(mvm, sta, tid, *ssn, true, buf_size,
					 timeout);
J
Johannes Berg 已提交
973 974
		break;
	case IEEE80211_AMPDU_RX_STOP:
975 976
		ret = iwl_mvm_sta_rx_agg(mvm, sta, tid, 0, false, buf_size,
					 timeout);
J
Johannes Berg 已提交
977 978
		break;
	case IEEE80211_AMPDU_TX_START:
979
		if (!iwl_enable_tx_ampdu(mvm->cfg)) {
980 981 982
			ret = -EINVAL;
			break;
		}
J
Johannes Berg 已提交
983 984 985
		ret = iwl_mvm_sta_tx_agg_start(mvm, vif, sta, tid, ssn);
		break;
	case IEEE80211_AMPDU_TX_STOP_CONT:
986 987
		ret = iwl_mvm_sta_tx_agg_stop(mvm, vif, sta, tid);
		break;
J
Johannes Berg 已提交
988 989
	case IEEE80211_AMPDU_TX_STOP_FLUSH:
	case IEEE80211_AMPDU_TX_STOP_FLUSH_CONT:
990
		ret = iwl_mvm_sta_tx_agg_flush(mvm, vif, sta, tid);
J
Johannes Berg 已提交
991 992
		break;
	case IEEE80211_AMPDU_TX_OPERATIONAL:
993 994
		ret = iwl_mvm_sta_tx_agg_oper(mvm, vif, sta, tid,
					      buf_size, amsdu);
J
Johannes Berg 已提交
995 996 997 998 999 1000
		break;
	default:
		WARN_ON_ONCE(1);
		ret = -EINVAL;
		break;
	}
1001 1002 1003 1004 1005 1006 1007 1008 1009 1010

	if (!ret) {
		u16 rx_ba_ssn = 0;

		if (action == IEEE80211_AMPDU_RX_START)
			rx_ba_ssn = *ssn;

		iwl_mvm_ampdu_check_trigger(mvm, vif, sta, tid,
					    rx_ba_ssn, action);
	}
J
Johannes Berg 已提交
1011 1012
	mutex_unlock(&mvm->mutex);

1013 1014 1015 1016 1017 1018 1019
	/*
	 * If the tid is marked as started, we won't use it for offloaded
	 * traffic on the next D0i3 entry. It's safe to unref.
	 */
	if (tx_agg_ref)
		iwl_mvm_unref(mvm, IWL_MVM_REF_TX_AGG);

J
Johannes Berg 已提交
1020 1021 1022 1023 1024 1025 1026 1027 1028 1029
	return ret;
}

static void iwl_mvm_cleanup_iterator(void *data, u8 *mac,
				     struct ieee80211_vif *vif)
{
	struct iwl_mvm *mvm = data;
	struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);

	mvmvif->uploaded = false;
1030
	mvmvif->ap_sta_id = IWL_MVM_INVALID_STA;
J
Johannes Berg 已提交
1031 1032 1033 1034 1035

	spin_lock_bh(&mvm->time_event_lock);
	iwl_mvm_te_clear_data(mvm, &mvmvif->time_event_data);
	spin_unlock_bh(&mvm->time_event_lock);

1036
	mvmvif->phy_ctxt = NULL;
1037
	memset(&mvmvif->bf_data, 0, sizeof(mvmvif->bf_data));
J
Johannes Berg 已提交
1038 1039 1040 1041
}

static void iwl_mvm_restart_cleanup(struct iwl_mvm *mvm)
{
1042 1043 1044 1045
	/* clear the D3 reconfig, we only need it to avoid dumping a
	 * firmware coredump on reconfiguration, we shouldn't do that
	 * on D3->D0 transition
	 */
1046
	if (!test_and_clear_bit(IWL_MVM_STATUS_D3_RECONFIG, &mvm->status)) {
1047 1048
		mvm->fwrt.dump.desc = &iwl_dump_desc_assert;
		iwl_fw_error_dump(&mvm->fwrt);
1049
	}
1050

1051 1052 1053 1054 1055
	/* cleanup all stale references (scan, roc), but keep the
	 * ucode_down ref until reconfig is complete
	 */
	iwl_mvm_unref_all_except(mvm, IWL_MVM_REF_UCODE_DOWN);

1056
	iwl_mvm_stop_device(mvm);
J
Johannes Berg 已提交
1057

1058
	mvm->scan_status = 0;
1059
	mvm->ps_disabled = false;
1060
	mvm->calibrating = false;
J
Johannes Berg 已提交
1061 1062

	/* just in case one was running */
1063
	iwl_mvm_cleanup_roc_te(mvm);
J
Johannes Berg 已提交
1064 1065
	ieee80211_remain_on_channel_expired(mvm->hw);

1066 1067 1068 1069 1070
	/*
	 * cleanup all interfaces, even inactive ones, as some might have
	 * gone down during the HW restart
	 */
	ieee80211_iterate_interfaces(mvm->hw, 0, iwl_mvm_cleanup_iterator, mvm);
J
Johannes Berg 已提交
1071

1072
	mvm->p2p_device_vif = NULL;
1073
	mvm->d0i3_ap_sta_id = IWL_MVM_INVALID_STA;
1074 1075

	iwl_mvm_reset_phy_ctxts(mvm);
1076
	memset(mvm->fw_key_table, 0, sizeof(mvm->fw_key_table));
1077
	memset(mvm->sta_deferred_frames, 0, sizeof(mvm->sta_deferred_frames));
1078 1079
	memset(&mvm->last_bt_notif, 0, sizeof(mvm->last_bt_notif));
	memset(&mvm->last_bt_ci_cmd, 0, sizeof(mvm->last_bt_ci_cmd));
J
Johannes Berg 已提交
1080 1081 1082

	ieee80211_wake_queues(mvm->hw);

1083 1084 1085
	/* clear any stale d0i3 state */
	clear_bit(IWL_MVM_STATUS_IN_D0I3, &mvm->status);

J
Johannes Berg 已提交
1086
	mvm->vif_count = 0;
1087
	mvm->rx_ba_sessions = 0;
1088
	mvm->fwrt.dump.conf = FW_DBG_INVALID;
1089
	mvm->monitor_on = false;
1090 1091 1092

	/* keep statistics ticking */
	iwl_mvm_accu_radio_stats(mvm);
J
Johannes Berg 已提交
1093 1094
}

1095
int __iwl_mvm_mac_start(struct iwl_mvm *mvm)
J
Johannes Berg 已提交
1096 1097 1098
{
	int ret;

1099
	lockdep_assert_held(&mvm->mutex);
J
Johannes Berg 已提交
1100

1101 1102 1103 1104 1105 1106 1107
	if (test_bit(IWL_MVM_STATUS_HW_RESTART_REQUESTED, &mvm->status)) {
		/*
		 * Now convert the HW_RESTART_REQUESTED flag to IN_HW_RESTART
		 * so later code will - from now on - see that we're doing it.
		 */
		set_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status);
		clear_bit(IWL_MVM_STATUS_HW_RESTART_REQUESTED, &mvm->status);
1108
		/* Clean up some internal and mac80211 state on restart */
J
Johannes Berg 已提交
1109
		iwl_mvm_restart_cleanup(mvm);
1110 1111 1112 1113 1114 1115 1116 1117 1118
	} else {
		/* Hold the reference to prevent runtime suspend while
		 * the start procedure runs.  It's a bit confusing
		 * that the UCODE_DOWN reference is taken, but it just
		 * means "UCODE is not UP yet". ( TODO: rename this
		 * reference).
		 */
		iwl_mvm_ref(mvm, IWL_MVM_REF_UCODE_DOWN);
	}
J
Johannes Berg 已提交
1119
	ret = iwl_mvm_up(mvm);
1120 1121 1122 1123 1124 1125 1126 1127 1128 1129

	if (ret && test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status)) {
		/* Something went wrong - we need to finish some cleanup
		 * that normally iwl_mvm_mac_restart_complete() below
		 * would do.
		 */
		clear_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status);
		iwl_mvm_d0i3_enable_tx(mvm, NULL);
	}

1130 1131 1132 1133 1134 1135 1136 1137
	return ret;
}

static int iwl_mvm_mac_start(struct ieee80211_hw *hw)
{
	struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
	int ret;

1138 1139 1140 1141 1142 1143 1144 1145 1146 1147 1148 1149 1150
	/* Some hw restart cleanups must not hold the mutex */
	if (test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status)) {
		/*
		 * Make sure we are out of d0i3. This is needed
		 * to make sure the reference accounting is correct
		 * (and there is no stale d0i3_exit_work).
		 */
		wait_event_timeout(mvm->d0i3_exit_waitq,
				   !test_bit(IWL_MVM_STATUS_IN_D0I3,
					     &mvm->status),
				   HZ);
	}

1151 1152
	mutex_lock(&mvm->mutex);
	ret = __iwl_mvm_mac_start(mvm);
J
Johannes Berg 已提交
1153 1154 1155 1156 1157
	mutex_unlock(&mvm->mutex);

	return ret;
}

1158
static void iwl_mvm_restart_complete(struct iwl_mvm *mvm)
J
Johannes Berg 已提交
1159 1160 1161 1162 1163 1164
{
	int ret;

	mutex_lock(&mvm->mutex);

	clear_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status);
1165
	iwl_mvm_d0i3_enable_tx(mvm, NULL);
1166
	ret = iwl_mvm_update_quotas(mvm, true, NULL);
J
Johannes Berg 已提交
1167 1168 1169 1170
	if (ret)
		IWL_ERR(mvm, "Failed to update quotas after restart (%d)\n",
			ret);

1171 1172 1173
	/* allow transport/FW low power modes */
	iwl_mvm_unref(mvm, IWL_MVM_REF_UCODE_DOWN);

1174 1175 1176 1177 1178 1179
	/*
	 * If we have TDLS peers, remove them. We don't know the last seqno/PN
	 * of packets the FW sent out, so we must reconnect.
	 */
	iwl_mvm_teardown_tdls_peers(mvm);

J
Johannes Berg 已提交
1180 1181 1182
	mutex_unlock(&mvm->mutex);
}

1183 1184
static void iwl_mvm_resume_complete(struct iwl_mvm *mvm)
{
1185 1186 1187 1188 1189 1190 1191
	if (iwl_mvm_is_d0i3_supported(mvm) &&
	    iwl_mvm_enter_d0i3_on_suspend(mvm))
		WARN_ONCE(!wait_event_timeout(mvm->d0i3_exit_waitq,
					      !test_bit(IWL_MVM_STATUS_IN_D0I3,
							&mvm->status),
					      HZ),
			  "D0i3 exit on resume timed out\n");
1192 1193
}

1194 1195 1196 1197 1198 1199 1200 1201 1202 1203 1204
static void
iwl_mvm_mac_reconfig_complete(struct ieee80211_hw *hw,
			      enum ieee80211_reconfig_type reconfig_type)
{
	struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);

	switch (reconfig_type) {
	case IEEE80211_RECONFIG_TYPE_RESTART:
		iwl_mvm_restart_complete(mvm);
		break;
	case IEEE80211_RECONFIG_TYPE_SUSPEND:
1205
		iwl_mvm_resume_complete(mvm);
1206 1207 1208 1209
		break;
	}
}

1210
void __iwl_mvm_mac_stop(struct iwl_mvm *mvm)
J
Johannes Berg 已提交
1211
{
1212
	lockdep_assert_held(&mvm->mutex);
1213

1214 1215 1216 1217 1218
	/* firmware counters are obviously reset now, but we shouldn't
	 * partially track so also clear the fw_reset_accu counters.
	 */
	memset(&mvm->accu_radio_stats, 0, sizeof(mvm->accu_radio_stats));

J
Johannes Berg 已提交
1219 1220 1221 1222 1223 1224
	/* async_handlers_wk is now blocked */

	/*
	 * The work item could be running or queued if the
	 * ROC time event stops just as we get here.
	 */
1225
	flush_work(&mvm->roc_done_wk);
J
Johannes Berg 已提交
1226

1227
	iwl_mvm_stop_device(mvm);
J
Johannes Berg 已提交
1228 1229 1230 1231 1232

	iwl_mvm_async_handlers_purge(mvm);
	/* async_handlers_list is empty and will stay empty: HW is stopped */

	/* the fw is stopped, the aux sta is dead: clean up driver state */
1233
	iwl_mvm_del_aux_sta(mvm);
J
Johannes Berg 已提交
1234

1235 1236 1237
	/*
	 * Clear IN_HW_RESTART flag when stopping the hw (as restart_complete()
	 * won't be called in this case).
1238 1239
	 * But make sure to cleanup interfaces that have gone down before/during
	 * HW restart was requested.
1240
	 */
1241 1242 1243
	if (test_and_clear_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status))
		ieee80211_iterate_interfaces(mvm->hw, 0,
					     iwl_mvm_cleanup_iterator, mvm);
1244

1245 1246 1247
	/* We shouldn't have any UIDs still set.  Loop over all the UIDs to
	 * make sure there's nothing left there and warn if any is found.
	 */
1248
	if (fw_has_capa(&mvm->fw->ucode_capa, IWL_UCODE_TLV_CAPA_UMAC_SCAN)) {
1249 1250
		int i;

1251
		for (i = 0; i < mvm->max_scans; i++) {
1252 1253 1254 1255
			if (WARN_ONCE(mvm->scan_uid_status[i],
				      "UMAC scan UID %d status was not cleaned\n",
				      i))
				mvm->scan_uid_status[i] = 0;
1256 1257
		}
	}
1258
}
1259

1260 1261 1262 1263 1264 1265
static void iwl_mvm_mac_stop(struct ieee80211_hw *hw)
{
	struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);

	flush_work(&mvm->d0i3_exit_work);
	flush_work(&mvm->async_handlers_wk);
1266
	flush_work(&mvm->add_stream_wk);
1267 1268 1269 1270 1271

	/*
	 * Lock and clear the firmware running bit here already, so that
	 * new commands coming in elsewhere, e.g. from debugfs, will not
	 * be able to proceed. This is important here because one of those
1272
	 * debugfs files causes the firmware dump to be triggered, and if we
1273 1274 1275 1276 1277
	 * don't stop debugfs accesses before canceling that it could be
	 * retriggered after we flush it but before we've cleared the bit.
	 */
	clear_bit(IWL_MVM_STATUS_FIRMWARE_RUNNING, &mvm->status);

1278
	iwl_fw_cancel_dump(&mvm->fwrt);
1279
	cancel_delayed_work_sync(&mvm->cs_tx_unblock_dwork);
1280
	cancel_delayed_work_sync(&mvm->scan_timeout_dwork);
1281
	iwl_fw_free_dump_desc(&mvm->fwrt);
1282 1283 1284

	mutex_lock(&mvm->mutex);
	__iwl_mvm_mac_stop(mvm);
J
Johannes Berg 已提交
1285 1286 1287 1288 1289 1290 1291 1292 1293
	mutex_unlock(&mvm->mutex);

	/*
	 * The worker might have been waiting for the mutex, let it run and
	 * discover that its list is now empty.
	 */
	cancel_work_sync(&mvm->async_handlers_wk);
}

1294 1295 1296 1297 1298 1299 1300 1301 1302 1303 1304 1305 1306 1307
static struct iwl_mvm_phy_ctxt *iwl_mvm_get_free_phy_ctxt(struct iwl_mvm *mvm)
{
	u16 i;

	lockdep_assert_held(&mvm->mutex);

	for (i = 0; i < NUM_PHY_CTX; i++)
		if (!mvm->phy_ctxts[i].ref)
			return &mvm->phy_ctxts[i];

	IWL_ERR(mvm, "No available PHY context\n");
	return NULL;
}

1308 1309 1310 1311
static int iwl_mvm_set_tx_power(struct iwl_mvm *mvm, struct ieee80211_vif *vif,
				s16 tx_power)
{
	struct iwl_dev_tx_power_cmd cmd = {
1312 1313
		.v3.set_mode = cpu_to_le32(IWL_TX_POWER_MODE_SET_MAC),
		.v3.mac_context_id =
1314
			cpu_to_le32(iwl_mvm_vif_from_mac80211(vif)->id),
1315
		.v3.pwr_restriction = cpu_to_le16(8 * tx_power),
1316
	};
1317
	int len = sizeof(cmd);
1318 1319

	if (tx_power == IWL_DEFAULT_MAX_TX_POWER)
1320
		cmd.v3.pwr_restriction = cpu_to_le16(IWL_DEV_MAX_TX_POWER);
1321

1322 1323
	if (!fw_has_capa(&mvm->fw->ucode_capa, IWL_UCODE_TLV_CAPA_TX_POWER_ACK))
		len = sizeof(cmd.v3);
1324 1325

	return iwl_mvm_send_cmd_pdu(mvm, REDUCE_TX_POWER_CMD, 0, len, &cmd);
1326 1327
}

J
Johannes Berg 已提交
1328 1329 1330 1331 1332 1333 1334
static int iwl_mvm_mac_add_interface(struct ieee80211_hw *hw,
				     struct ieee80211_vif *vif)
{
	struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
	struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
	int ret;

1335 1336
	mvmvif->mvm = mvm;

1337 1338 1339 1340 1341 1342 1343 1344 1345
	/*
	 * make sure D0i3 exit is completed, otherwise a target access
	 * during tx queue configuration could be done when still in
	 * D0i3 state.
	 */
	ret = iwl_mvm_ref_sync(mvm, IWL_MVM_REF_ADD_IF);
	if (ret)
		return ret;

J
Johannes Berg 已提交
1346 1347 1348 1349 1350 1351 1352 1353
	/*
	 * Not much to do here. The stack will not allow interface
	 * types or combinations that we didn't advertise, so we
	 * don't really have to check the types.
	 */

	mutex_lock(&mvm->mutex);

1354 1355 1356 1357 1358
	/* make sure that beacon statistics don't go backwards with FW reset */
	if (test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status))
		mvmvif->beacon_stats.accu_num_beacons +=
			mvmvif->beacon_stats.num_beacons;

1359
	/* Allocate resources for the MAC context, and add it to the fw  */
J
Johannes Berg 已提交
1360 1361 1362 1363
	ret = iwl_mvm_mac_ctxt_init(mvm, vif);
	if (ret)
		goto out_unlock;

1364
	/* Counting number of interfaces is needed for legacy PM */
1365 1366 1367
	if (vif->type != NL80211_IFTYPE_P2P_DEVICE)
		mvm->vif_count++;

J
Johannes Berg 已提交
1368 1369 1370 1371 1372 1373 1374 1375 1376 1377 1378
	/*
	 * The AP binding flow can be done only after the beacon
	 * template is configured (which happens only in the mac80211
	 * start_ap() flow), and adding the broadcast station can happen
	 * only after the binding.
	 * In addition, since modifying the MAC before adding a bcast
	 * station is not allowed by the FW, delay the adding of MAC context to
	 * the point where we can also add the bcast station.
	 * In short: there's not much we can do at this point, other than
	 * allocating resources :)
	 */
J
Johannes Berg 已提交
1379 1380
	if (vif->type == NL80211_IFTYPE_AP ||
	    vif->type == NL80211_IFTYPE_ADHOC) {
1381
		ret = iwl_mvm_alloc_bcast_sta(mvm, vif);
J
Johannes Berg 已提交
1382 1383 1384 1385 1386
		if (ret) {
			IWL_ERR(mvm, "Failed to allocate bcast sta\n");
			goto out_release;
		}

1387 1388 1389 1390 1391 1392 1393 1394 1395
		/*
		 * Only queue for this station is the mcast queue,
		 * which shouldn't be in TFD mask anyway
		 */
		ret = iwl_mvm_allocate_int_sta(mvm, &mvmvif->mcast_sta,
					       0, vif->type,
					       IWL_STA_MULTICAST);
		if (ret)
			goto out_release;
1396

1397
		iwl_mvm_vif_dbgfs_register(mvm, vif);
J
Johannes Berg 已提交
1398 1399 1400
		goto out_unlock;
	}

1401 1402
	mvmvif->features |= hw->netdev_features;

J
Johannes Berg 已提交
1403 1404 1405 1406
	ret = iwl_mvm_mac_ctxt_add(mvm, vif);
	if (ret)
		goto out_release;

1407
	ret = iwl_mvm_power_update_mac(mvm);
1408
	if (ret)
1409
		goto out_remove_mac;
J
Johannes Berg 已提交
1410

1411
	/* beacon filtering */
E
Emmanuel Grumbach 已提交
1412
	ret = iwl_mvm_disable_beacon_filter(mvm, vif, 0);
1413 1414 1415
	if (ret)
		goto out_remove_mac;

1416
	if (!mvm->bf_allowed_vif &&
1417
	    vif->type == NL80211_IFTYPE_STATION && !vif->p2p) {
1418
		mvm->bf_allowed_vif = mvmvif;
1419 1420
		vif->driver_flags |= IEEE80211_VIF_BEACON_FILTER |
				     IEEE80211_VIF_SUPPORTS_CQM_RSSI;
1421 1422
	}

J
Johannes Berg 已提交
1423 1424 1425 1426 1427 1428 1429
	/*
	 * P2P_DEVICE interface does not have a channel context assigned to it,
	 * so a dedicated PHY context is allocated to it and the corresponding
	 * MAC context is bound to it at this stage.
	 */
	if (vif->type == NL80211_IFTYPE_P2P_DEVICE) {

1430 1431 1432
		mvmvif->phy_ctxt = iwl_mvm_get_free_phy_ctxt(mvm);
		if (!mvmvif->phy_ctxt) {
			ret = -ENOSPC;
1433
			goto out_free_bf;
1434
		}
J
Johannes Berg 已提交
1435

1436
		iwl_mvm_phy_ctxt_ref(mvm, mvmvif->phy_ctxt);
J
Johannes Berg 已提交
1437 1438
		ret = iwl_mvm_binding_add_vif(mvm, vif);
		if (ret)
1439
			goto out_unref_phy;
J
Johannes Berg 已提交
1440

1441
		ret = iwl_mvm_add_p2p_bcast_sta(mvm, vif);
J
Johannes Berg 已提交
1442 1443 1444 1445 1446 1447 1448 1449
		if (ret)
			goto out_unbind;

		/* Save a pointer to p2p device vif, so it can later be used to
		 * update the p2p device MAC when a GO is started/stopped */
		mvm->p2p_device_vif = vif;
	}

1450 1451
	iwl_mvm_tcm_add_vif(mvm, vif);

1452 1453 1454
	if (vif->type == NL80211_IFTYPE_MONITOR)
		mvm->monitor_on = true;

1455
	iwl_mvm_vif_dbgfs_register(mvm, vif);
J
Johannes Berg 已提交
1456 1457 1458 1459
	goto out_unlock;

 out_unbind:
	iwl_mvm_binding_remove_vif(mvm, vif);
1460
 out_unref_phy:
1461
	iwl_mvm_phy_ctxt_unref(mvm, mvmvif->phy_ctxt);
1462 1463 1464
 out_free_bf:
	if (mvm->bf_allowed_vif == mvmvif) {
		mvm->bf_allowed_vif = NULL;
1465 1466
		vif->driver_flags &= ~(IEEE80211_VIF_BEACON_FILTER |
				       IEEE80211_VIF_SUPPORTS_CQM_RSSI);
1467
	}
J
Johannes Berg 已提交
1468 1469 1470 1471
 out_remove_mac:
	mvmvif->phy_ctxt = NULL;
	iwl_mvm_mac_ctxt_remove(mvm, vif);
 out_release:
1472 1473
	if (vif->type != NL80211_IFTYPE_P2P_DEVICE)
		mvm->vif_count--;
J
Johannes Berg 已提交
1474 1475 1476
 out_unlock:
	mutex_unlock(&mvm->mutex);

1477 1478
	iwl_mvm_unref(mvm, IWL_MVM_REF_ADD_IF);

J
Johannes Berg 已提交
1479 1480 1481
	return ret;
}

1482 1483
static void iwl_mvm_prepare_mac_removal(struct iwl_mvm *mvm,
					struct ieee80211_vif *vif)
J
Johannes Berg 已提交
1484 1485 1486 1487 1488 1489 1490 1491 1492
{
	if (vif->type == NL80211_IFTYPE_P2P_DEVICE) {
		/*
		 * Flush the ROC worker which will flush the OFFCHANNEL queue.
		 * We assume here that all the packets sent to the OFFCHANNEL
		 * queue are sent in ROC session.
		 */
		flush_work(&mvm->roc_done_wk);
	}
1493 1494 1495 1496 1497 1498 1499 1500 1501
}

static void iwl_mvm_mac_remove_interface(struct ieee80211_hw *hw,
					 struct ieee80211_vif *vif)
{
	struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
	struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);

	iwl_mvm_prepare_mac_removal(mvm, vif);
J
Johannes Berg 已提交
1502

1503 1504 1505 1506
	if (!(vif->type == NL80211_IFTYPE_AP ||
	      vif->type == NL80211_IFTYPE_ADHOC))
		iwl_mvm_tcm_rm_vif(mvm, vif);

J
Johannes Berg 已提交
1507 1508
	mutex_lock(&mvm->mutex);

1509 1510
	if (mvm->bf_allowed_vif == mvmvif) {
		mvm->bf_allowed_vif = NULL;
1511 1512
		vif->driver_flags &= ~(IEEE80211_VIF_BEACON_FILTER |
				       IEEE80211_VIF_SUPPORTS_CQM_RSSI);
1513 1514
	}

1515 1516
	iwl_mvm_vif_dbgfs_clean(mvm, vif);

J
Johannes Berg 已提交
1517 1518
	/*
	 * For AP/GO interface, the tear down of the resources allocated to the
1519
	 * interface is be handled as part of the stop_ap flow.
J
Johannes Berg 已提交
1520
	 */
J
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1521 1522
	if (vif->type == NL80211_IFTYPE_AP ||
	    vif->type == NL80211_IFTYPE_ADHOC) {
1523 1524 1525 1526 1527 1528
#ifdef CONFIG_NL80211_TESTMODE
		if (vif == mvm->noa_vif) {
			mvm->noa_vif = NULL;
			mvm->noa_duration = 0;
		}
#endif
1529
		iwl_mvm_dealloc_int_sta(mvm, &mvmvif->mcast_sta);
1530
		iwl_mvm_dealloc_bcast_sta(mvm, vif);
J
Johannes Berg 已提交
1531 1532 1533 1534 1535
		goto out_release;
	}

	if (vif->type == NL80211_IFTYPE_P2P_DEVICE) {
		mvm->p2p_device_vif = NULL;
1536
		iwl_mvm_rm_p2p_bcast_sta(mvm, vif);
J
Johannes Berg 已提交
1537
		iwl_mvm_binding_remove_vif(mvm, vif);
1538
		iwl_mvm_phy_ctxt_unref(mvm, mvmvif->phy_ctxt);
J
Johannes Berg 已提交
1539 1540 1541
		mvmvif->phy_ctxt = NULL;
	}

1542
	if (mvm->vif_count && vif->type != NL80211_IFTYPE_P2P_DEVICE)
J
Johannes Berg 已提交
1543
		mvm->vif_count--;
1544

1545
	iwl_mvm_power_update_mac(mvm);
J
Johannes Berg 已提交
1546 1547
	iwl_mvm_mac_ctxt_remove(mvm, vif);

1548 1549 1550
	if (vif->type == NL80211_IFTYPE_MONITOR)
		mvm->monitor_on = false;

J
Johannes Berg 已提交
1551 1552 1553 1554 1555
out_release:
	mutex_unlock(&mvm->mutex);
}

static int iwl_mvm_mac_config(struct ieee80211_hw *hw, u32 changed)
1556
{
J
Johannes Berg 已提交
1557 1558 1559
	return 0;
}

1560 1561 1562 1563 1564 1565 1566 1567 1568 1569 1570
struct iwl_mvm_mc_iter_data {
	struct iwl_mvm *mvm;
	int port_id;
};

static void iwl_mvm_mc_iface_iterator(void *_data, u8 *mac,
				      struct ieee80211_vif *vif)
{
	struct iwl_mvm_mc_iter_data *data = _data;
	struct iwl_mvm *mvm = data->mvm;
	struct iwl_mcast_filter_cmd *cmd = mvm->mcast_filter_cmd;
1571 1572 1573 1574 1575
	struct iwl_host_cmd hcmd = {
		.id = MCAST_FILTER_CMD,
		.flags = CMD_ASYNC,
		.dataflags[0] = IWL_HCMD_DFL_NOCOPY,
	};
1576 1577 1578 1579 1580 1581 1582 1583 1584 1585 1586 1587 1588 1589
	int ret, len;

	/* if we don't have free ports, mcast frames will be dropped */
	if (WARN_ON_ONCE(data->port_id >= MAX_PORT_ID_NUM))
		return;

	if (vif->type != NL80211_IFTYPE_STATION ||
	    !vif->bss_conf.assoc)
		return;

	cmd->port_id = data->port_id++;
	memcpy(cmd->bssid, vif->bss_conf.bssid, ETH_ALEN);
	len = roundup(sizeof(*cmd) + cmd->count * ETH_ALEN, 4);

1590 1591 1592 1593
	hcmd.len[0] = len;
	hcmd.data[0] = cmd;

	ret = iwl_mvm_send_cmd(mvm, &hcmd);
1594 1595 1596 1597 1598 1599 1600 1601
	if (ret)
		IWL_ERR(mvm, "mcast filter cmd error. ret=%d\n", ret);
}

static void iwl_mvm_recalc_multicast(struct iwl_mvm *mvm)
{
	struct iwl_mvm_mc_iter_data iter_data = {
		.mvm = mvm,
1602 1603
	};

1604 1605 1606 1607 1608
	lockdep_assert_held(&mvm->mutex);

	if (WARN_ON_ONCE(!mvm->mcast_filter_cmd))
		return;

1609
	ieee80211_iterate_active_interfaces_atomic(
1610 1611
		mvm->hw, IEEE80211_IFACE_ITER_NORMAL,
		iwl_mvm_mc_iface_iterator, &iter_data);
1612 1613
}

1614 1615
static u64 iwl_mvm_prepare_multicast(struct ieee80211_hw *hw,
				     struct netdev_hw_addr_list *mc_list)
J
Johannes Berg 已提交
1616
{
1617 1618 1619
	struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
	struct iwl_mcast_filter_cmd *cmd;
	struct netdev_hw_addr *addr;
1620 1621
	int addr_count;
	bool pass_all;
1622 1623
	int len;

1624 1625 1626 1627
	addr_count = netdev_hw_addr_list_count(mc_list);
	pass_all = addr_count > MAX_MCAST_FILTERING_ADDRESSES ||
		   IWL_MVM_FW_MCAST_FILTER_PASS_ALL;
	if (pass_all)
1628 1629 1630 1631 1632 1633 1634 1635 1636 1637 1638 1639 1640 1641 1642 1643 1644 1645 1646 1647 1648
		addr_count = 0;

	len = roundup(sizeof(*cmd) + addr_count * ETH_ALEN, 4);
	cmd = kzalloc(len, GFP_ATOMIC);
	if (!cmd)
		return 0;

	if (pass_all) {
		cmd->pass_all = 1;
		return (u64)(unsigned long)cmd;
	}

	netdev_hw_addr_list_for_each(addr, mc_list) {
		IWL_DEBUG_MAC80211(mvm, "mcast addr (%d): %pM\n",
				   cmd->count, addr->addr);
		memcpy(&cmd->addr_list[cmd->count * ETH_ALEN],
		       addr->addr, ETH_ALEN);
		cmd->count++;
	}

	return (u64)(unsigned long)cmd;
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Johannes Berg 已提交
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}

static void iwl_mvm_configure_filter(struct ieee80211_hw *hw,
				     unsigned int changed_flags,
				     unsigned int *total_flags,
				     u64 multicast)
{
1656 1657
	struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
	struct iwl_mcast_filter_cmd *cmd = (void *)(unsigned long)multicast;
J
Johannes Berg 已提交
1658

1659
	mutex_lock(&mvm->mutex);
1660

1661 1662 1663
	/* replace previous configuration */
	kfree(mvm->mcast_filter_cmd);
	mvm->mcast_filter_cmd = cmd;
1664

1665 1666
	if (!cmd)
		goto out;
1667

1668 1669 1670 1671 1672 1673
	if (changed_flags & FIF_ALLMULTI)
		cmd->pass_all = !!(*total_flags & FIF_ALLMULTI);

	if (cmd->pass_all)
		cmd->count = 0;

1674 1675 1676 1677
	iwl_mvm_recalc_multicast(mvm);
out:
	mutex_unlock(&mvm->mutex);
	*total_flags = 0;
1678 1679
}

1680 1681 1682 1683 1684 1685 1686 1687 1688 1689 1690 1691 1692 1693 1694 1695 1696 1697 1698 1699 1700
static void iwl_mvm_config_iface_filter(struct ieee80211_hw *hw,
					struct ieee80211_vif *vif,
					unsigned int filter_flags,
					unsigned int changed_flags)
{
	struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);

	/* We support only filter for probe requests */
	if (!(changed_flags & FIF_PROBE_REQ))
		return;

	/* Supported only for p2p client interfaces */
	if (vif->type != NL80211_IFTYPE_STATION || !vif->bss_conf.assoc ||
	    !vif->p2p)
		return;

	mutex_lock(&mvm->mutex);
	iwl_mvm_mac_ctxt_changed(mvm, vif, false, NULL);
	mutex_unlock(&mvm->mutex);
}

1701 1702 1703 1704 1705 1706 1707 1708 1709 1710 1711 1712 1713 1714 1715 1716 1717 1718 1719 1720 1721 1722 1723
#ifdef CONFIG_IWLWIFI_BCAST_FILTERING
struct iwl_bcast_iter_data {
	struct iwl_mvm *mvm;
	struct iwl_bcast_filter_cmd *cmd;
	u8 current_filter;
};

static void
iwl_mvm_set_bcast_filter(struct ieee80211_vif *vif,
			 const struct iwl_fw_bcast_filter *in_filter,
			 struct iwl_fw_bcast_filter *out_filter)
{
	struct iwl_fw_bcast_filter_attr *attr;
	int i;

	memcpy(out_filter, in_filter, sizeof(*out_filter));

	for (i = 0; i < ARRAY_SIZE(out_filter->attrs); i++) {
		attr = &out_filter->attrs[i];

		if (!attr->mask)
			break;

1724 1725 1726 1727 1728 1729 1730 1731 1732 1733 1734 1735 1736 1737 1738 1739
		switch (attr->reserved1) {
		case cpu_to_le16(BC_FILTER_MAGIC_IP):
			if (vif->bss_conf.arp_addr_cnt != 1) {
				attr->mask = 0;
				continue;
			}

			attr->val = vif->bss_conf.arp_addr_list[0];
			break;
		case cpu_to_le16(BC_FILTER_MAGIC_MAC):
			attr->val = *(__be32 *)&vif->addr[2];
			break;
		default:
			break;
		}
		attr->reserved1 = 0;
1740 1741 1742 1743 1744 1745 1746 1747 1748 1749 1750 1751 1752 1753 1754 1755 1756 1757 1758
		out_filter->num_attrs++;
	}
}

static void iwl_mvm_bcast_filter_iterator(void *_data, u8 *mac,
					  struct ieee80211_vif *vif)
{
	struct iwl_bcast_iter_data *data = _data;
	struct iwl_mvm *mvm = data->mvm;
	struct iwl_bcast_filter_cmd *cmd = data->cmd;
	struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
	struct iwl_fw_bcast_mac *bcast_mac;
	int i;

	if (WARN_ON(mvmvif->id >= ARRAY_SIZE(cmd->macs)))
		return;

	bcast_mac = &cmd->macs[mvmvif->id];

1759 1760 1761 1762 1763 1764
	/*
	 * enable filtering only for associated stations, but not for P2P
	 * Clients
	 */
	if (vif->type != NL80211_IFTYPE_STATION || vif->p2p ||
	    !vif->bss_conf.assoc)
1765 1766 1767 1768 1769 1770 1771 1772 1773 1774 1775 1776 1777 1778 1779 1780 1781 1782 1783 1784 1785 1786 1787 1788 1789 1790 1791 1792 1793 1794 1795 1796 1797 1798
		return;

	bcast_mac->default_discard = 1;

	/* copy all configured filters */
	for (i = 0; mvm->bcast_filters[i].attrs[0].mask; i++) {
		/*
		 * Make sure we don't exceed our filters limit.
		 * if there is still a valid filter to be configured,
		 * be on the safe side and just allow bcast for this mac.
		 */
		if (WARN_ON_ONCE(data->current_filter >=
				 ARRAY_SIZE(cmd->filters))) {
			bcast_mac->default_discard = 0;
			bcast_mac->attached_filters = 0;
			break;
		}

		iwl_mvm_set_bcast_filter(vif,
					 &mvm->bcast_filters[i],
					 &cmd->filters[data->current_filter]);

		/* skip current filter if it contains no attributes */
		if (!cmd->filters[data->current_filter].num_attrs)
			continue;

		/* attach the filter to current mac */
		bcast_mac->attached_filters |=
				cpu_to_le16(BIT(data->current_filter));

		data->current_filter++;
	}
}

1799 1800
bool iwl_mvm_bcast_filter_build_cmd(struct iwl_mvm *mvm,
				    struct iwl_bcast_filter_cmd *cmd)
1801 1802 1803
{
	struct iwl_bcast_iter_data iter_data = {
		.mvm = mvm,
1804
		.cmd = cmd,
1805 1806
	};

1807 1808 1809
	if (IWL_MVM_FW_BCAST_FILTER_PASS_ALL)
		return false;

1810 1811 1812 1813 1814 1815 1816 1817 1818 1819 1820 1821 1822 1823
	memset(cmd, 0, sizeof(*cmd));
	cmd->max_bcast_filters = ARRAY_SIZE(cmd->filters);
	cmd->max_macs = ARRAY_SIZE(cmd->macs);

#ifdef CONFIG_IWLWIFI_DEBUGFS
	/* use debugfs filters/macs if override is configured */
	if (mvm->dbgfs_bcast_filtering.override) {
		memcpy(cmd->filters, &mvm->dbgfs_bcast_filtering.cmd.filters,
		       sizeof(cmd->filters));
		memcpy(cmd->macs, &mvm->dbgfs_bcast_filtering.cmd.macs,
		       sizeof(cmd->macs));
		return true;
	}
#endif
1824 1825 1826

	/* if no filters are configured, do nothing */
	if (!mvm->bcast_filters)
1827
		return false;
1828 1829 1830 1831 1832 1833

	/* configure and attach these filters for each associated sta vif */
	ieee80211_iterate_active_interfaces(
		mvm->hw, IEEE80211_IFACE_ITER_NORMAL,
		iwl_mvm_bcast_filter_iterator, &iter_data);

1834 1835
	return true;
}
1836 1837

static int iwl_mvm_configure_bcast_filter(struct iwl_mvm *mvm)
1838 1839 1840 1841 1842 1843 1844 1845 1846
{
	struct iwl_bcast_filter_cmd cmd;

	if (!(mvm->fw->ucode_capa.flags & IWL_UCODE_TLV_FLAGS_BCAST_FILTERING))
		return 0;

	if (!iwl_mvm_bcast_filter_build_cmd(mvm, &cmd))
		return 0;

E
Emmanuel Grumbach 已提交
1847
	return iwl_mvm_send_cmd_pdu(mvm, BCAST_FILTER_CMD, 0,
1848 1849 1850
				    sizeof(cmd), &cmd);
}
#else
1851
static inline int iwl_mvm_configure_bcast_filter(struct iwl_mvm *mvm)
1852 1853 1854 1855 1856
{
	return 0;
}
#endif

1857 1858 1859 1860 1861 1862 1863 1864 1865 1866 1867 1868 1869 1870 1871 1872
static int iwl_mvm_update_mu_groups(struct iwl_mvm *mvm,
				    struct ieee80211_vif *vif)
{
	struct iwl_mu_group_mgmt_cmd cmd = {};

	memcpy(cmd.membership_status, vif->bss_conf.mu_group.membership,
	       WLAN_MEMBERSHIP_LEN);
	memcpy(cmd.user_position, vif->bss_conf.mu_group.position,
	       WLAN_USER_POSITION_LEN);

	return iwl_mvm_send_cmd_pdu(mvm,
				    WIDE_ID(DATA_PATH_GROUP,
					    UPDATE_MU_GROUPS_CMD),
				    0, sizeof(cmd), &cmd);
}

1873 1874 1875 1876 1877 1878 1879 1880 1881 1882 1883 1884 1885 1886 1887 1888 1889 1890 1891 1892 1893 1894 1895 1896 1897 1898 1899 1900
static void iwl_mvm_mu_mimo_iface_iterator(void *_data, u8 *mac,
					   struct ieee80211_vif *vif)
{
	if (vif->mu_mimo_owner) {
		struct iwl_mu_group_mgmt_notif *notif = _data;

		/*
		 * MU-MIMO Group Id action frame is little endian. We treat
		 * the data received from firmware as if it came from the
		 * action frame, so no conversion is needed.
		 */
		ieee80211_update_mu_groups(vif,
					   (u8 *)&notif->membership_status,
					   (u8 *)&notif->user_position);
	}
}

void iwl_mvm_mu_mimo_grp_notif(struct iwl_mvm *mvm,
			       struct iwl_rx_cmd_buffer *rxb)
{
	struct iwl_rx_packet *pkt = rxb_addr(rxb);
	struct iwl_mu_group_mgmt_notif *notif = (void *)pkt->data;

	ieee80211_iterate_active_interfaces_atomic(
			mvm->hw, IEEE80211_IFACE_ITER_NORMAL,
			iwl_mvm_mu_mimo_iface_iterator, notif);
}

1901 1902 1903 1904 1905 1906 1907 1908 1909 1910 1911 1912 1913 1914 1915 1916 1917 1918 1919 1920 1921 1922 1923 1924 1925 1926 1927 1928 1929 1930 1931 1932 1933 1934 1935 1936 1937 1938 1939 1940 1941 1942 1943 1944 1945 1946 1947 1948 1949 1950 1951 1952 1953 1954 1955 1956 1957 1958 1959 1960 1961 1962 1963 1964 1965 1966 1967 1968 1969 1970 1971 1972 1973 1974 1975 1976 1977 1978 1979 1980 1981 1982 1983 1984 1985 1986 1987 1988 1989 1990 1991 1992 1993 1994 1995 1996 1997 1998 1999 2000 2001 2002 2003 2004 2005 2006 2007 2008 2009 2010 2011 2012 2013 2014 2015 2016 2017 2018 2019 2020 2021 2022 2023 2024 2025 2026 2027 2028 2029 2030 2031 2032 2033 2034 2035 2036 2037 2038 2039 2040 2041 2042 2043 2044 2045 2046 2047 2048 2049 2050 2051 2052 2053 2054 2055 2056 2057 2058 2059 2060 2061 2062 2063 2064 2065 2066 2067 2068 2069 2070 2071 2072 2073 2074 2075 2076 2077 2078 2079 2080 2081 2082 2083 2084 2085 2086 2087 2088
static u8 iwl_mvm_he_get_ppe_val(u8 *ppe, u8 ppe_pos_bit)
{
	u8 byte_num = ppe_pos_bit / 8;
	u8 bit_num = ppe_pos_bit % 8;
	u8 residue_bits;
	u8 res;

	if (bit_num <= 5)
		return (ppe[byte_num] >> bit_num) &
		       (BIT(IEEE80211_PPE_THRES_INFO_PPET_SIZE) - 1);

	/*
	 * If bit_num > 5, we have to combine bits with next byte.
	 * Calculate how many bits we need to take from current byte (called
	 * here "residue_bits"), and add them to bits from next byte.
	 */

	residue_bits = 8 - bit_num;

	res = (ppe[byte_num + 1] &
	       (BIT(IEEE80211_PPE_THRES_INFO_PPET_SIZE - residue_bits) - 1)) <<
	      residue_bits;
	res += (ppe[byte_num] >> bit_num) & (BIT(residue_bits) - 1);

	return res;
}

static void iwl_mvm_cfg_he_sta(struct iwl_mvm *mvm,
			       struct ieee80211_vif *vif, u8 sta_id)
{
	struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
	struct iwl_he_sta_context_cmd sta_ctxt_cmd = {
		.sta_id = sta_id,
		.tid_limit = IWL_MAX_TID_COUNT,
		.bss_color = vif->bss_conf.bss_color,
		.htc_trig_based_pkt_ext = vif->bss_conf.htc_trig_based_pkt_ext,
		.frame_time_rts_th =
			cpu_to_le16(vif->bss_conf.frame_time_rts_th),
	};
	struct ieee80211_sta *sta;
	u32 flags;
	int i;

	rcu_read_lock();

	sta = rcu_dereference(mvm->fw_id_to_mac_id[sta_ctxt_cmd.sta_id]);
	if (IS_ERR(sta)) {
		rcu_read_unlock();
		WARN(1, "Can't find STA to configure HE\n");
		return;
	}

	if (!sta->he_cap.has_he) {
		rcu_read_unlock();
		return;
	}

	flags = 0;

	/* HTC flags */
	if (sta->he_cap.he_cap_elem.mac_cap_info[0] &
	    IEEE80211_HE_MAC_CAP0_HTC_HE)
		sta_ctxt_cmd.htc_flags |= cpu_to_le32(IWL_HE_HTC_SUPPORT);
	if ((sta->he_cap.he_cap_elem.mac_cap_info[1] &
	      IEEE80211_HE_MAC_CAP1_LINK_ADAPTATION) ||
	    (sta->he_cap.he_cap_elem.mac_cap_info[2] &
	      IEEE80211_HE_MAC_CAP2_LINK_ADAPTATION)) {
		u8 link_adap =
			((sta->he_cap.he_cap_elem.mac_cap_info[2] &
			  IEEE80211_HE_MAC_CAP2_LINK_ADAPTATION) << 1) +
			 (sta->he_cap.he_cap_elem.mac_cap_info[1] &
			  IEEE80211_HE_MAC_CAP1_LINK_ADAPTATION);

		if (link_adap == 2)
			sta_ctxt_cmd.htc_flags |=
				cpu_to_le32(IWL_HE_HTC_LINK_ADAP_UNSOLICITED);
		else if (link_adap == 3)
			sta_ctxt_cmd.htc_flags |=
				cpu_to_le32(IWL_HE_HTC_LINK_ADAP_BOTH);
	}
	if (sta->he_cap.he_cap_elem.mac_cap_info[2] &
	    IEEE80211_HE_MAC_CAP2_UL_MU_RESP_SCHED)
		sta_ctxt_cmd.htc_flags |=
			cpu_to_le32(IWL_HE_HTC_UL_MU_RESP_SCHED);
	if (sta->he_cap.he_cap_elem.mac_cap_info[2] & IEEE80211_HE_MAC_CAP2_BSR)
		sta_ctxt_cmd.htc_flags |= cpu_to_le32(IWL_HE_HTC_BSR_SUPP);
	if (sta->he_cap.he_cap_elem.mac_cap_info[3] &
	    IEEE80211_HE_MAC_CAP3_OMI_CONTROL)
		sta_ctxt_cmd.htc_flags |= cpu_to_le32(IWL_HE_HTC_OMI_SUPP);
	if (sta->he_cap.he_cap_elem.mac_cap_info[4] & IEEE80211_HE_MAC_CAP4_BQR)
		sta_ctxt_cmd.htc_flags |= cpu_to_le32(IWL_HE_HTC_BQR_SUPP);

	/* If PPE Thresholds exist, parse them into a FW-familiar format */
	if (sta->he_cap.he_cap_elem.phy_cap_info[6] &
	    IEEE80211_HE_PHY_CAP6_PPE_THRESHOLD_PRESENT) {
		u8 nss = (sta->he_cap.ppe_thres[0] &
			  IEEE80211_PPE_THRES_NSS_MASK) + 1;
		u8 ru_index_bitmap =
			(sta->he_cap.ppe_thres[0] &
			 IEEE80211_PPE_THRES_RU_INDEX_BITMASK_MASK) >>
			IEEE80211_PPE_THRES_RU_INDEX_BITMASK_POS;
		u8 *ppe = &sta->he_cap.ppe_thres[0];
		u8 ppe_pos_bit = 7; /* Starting after PPE header */

		/*
		 * FW currently supports only nss == MAX_HE_SUPP_NSS
		 *
		 * If nss > MAX: we can ignore values we don't support
		 * If nss < MAX: we can set zeros in other streams
		 */
		if (nss > MAX_HE_SUPP_NSS) {
			IWL_INFO(mvm, "Got NSS = %d - trimming to %d\n", nss,
				 MAX_HE_SUPP_NSS);
			nss = MAX_HE_SUPP_NSS;
		}

		for (i = 0; i < nss; i++) {
			u8 ru_index_tmp = ru_index_bitmap << 1;
			u8 bw;

			for (bw = 0; bw < MAX_HE_CHANNEL_BW_INDX; bw++) {
				ru_index_tmp >>= 1;
				if (!(ru_index_tmp & 1))
					continue;

				sta_ctxt_cmd.pkt_ext.pkt_ext_qam_th[i][bw][1] =
					iwl_mvm_he_get_ppe_val(ppe,
							       ppe_pos_bit);
				ppe_pos_bit +=
					IEEE80211_PPE_THRES_INFO_PPET_SIZE;
				sta_ctxt_cmd.pkt_ext.pkt_ext_qam_th[i][bw][0] =
					iwl_mvm_he_get_ppe_val(ppe,
							       ppe_pos_bit);
				ppe_pos_bit +=
					IEEE80211_PPE_THRES_INFO_PPET_SIZE;
			}
		}

		flags |= STA_CTXT_HE_PACKET_EXT;
	}
	rcu_read_unlock();

	/* Mark MU EDCA as enabled, unless none detected on some AC */
	flags |= STA_CTXT_HE_MU_EDCA_CW;
	for (i = 0; i < AC_NUM; i++) {
		struct ieee80211_he_mu_edca_param_ac_rec *mu_edca =
			&mvmvif->queue_params[i].mu_edca_param_rec;

		if (!mvmvif->queue_params[i].mu_edca) {
			flags &= ~STA_CTXT_HE_MU_EDCA_CW;
			break;
		}

		sta_ctxt_cmd.trig_based_txf[i].cwmin =
			cpu_to_le16(mu_edca->ecw_min_max & 0xf);
		sta_ctxt_cmd.trig_based_txf[i].cwmax =
			cpu_to_le16((mu_edca->ecw_min_max & 0xf0) >> 4);
		sta_ctxt_cmd.trig_based_txf[i].aifsn =
			cpu_to_le16(mu_edca->aifsn);
		sta_ctxt_cmd.trig_based_txf[i].mu_time =
			cpu_to_le16(mu_edca->mu_edca_timer);
	}

	if (vif->bss_conf.multi_sta_back_32bit)
		flags |= STA_CTXT_HE_32BIT_BA_BITMAP;

	if (vif->bss_conf.ack_enabled)
		flags |= STA_CTXT_HE_ACK_ENABLED;

	if (vif->bss_conf.uora_exists) {
		flags |= STA_CTXT_HE_TRIG_RND_ALLOC;

		sta_ctxt_cmd.rand_alloc_ecwmin =
			vif->bss_conf.uora_ocw_range & 0x7;
		sta_ctxt_cmd.rand_alloc_ecwmax =
			(vif->bss_conf.uora_ocw_range >> 3) & 0x7;
	}

	/* TODO: support Multi BSSID IE */

	sta_ctxt_cmd.flags = cpu_to_le32(flags);

	if (iwl_mvm_send_cmd_pdu(mvm, iwl_cmd_id(STA_HE_CTXT_CMD,
						 DATA_PATH_GROUP, 0),
				 0, sizeof(sta_ctxt_cmd), &sta_ctxt_cmd))
		IWL_ERR(mvm, "Failed to config FW to work HE!\n");
}

J
Johannes Berg 已提交
2089 2090 2091 2092 2093 2094 2095 2096
static void iwl_mvm_bss_info_changed_station(struct iwl_mvm *mvm,
					     struct ieee80211_vif *vif,
					     struct ieee80211_bss_conf *bss_conf,
					     u32 changes)
{
	struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
	int ret;

2097 2098 2099 2100 2101
	/*
	 * Re-calculate the tsf id, as the master-slave relations depend on the
	 * beacon interval, which was not known when the station interface was
	 * added.
	 */
2102 2103 2104 2105
	if (changes & BSS_CHANGED_ASSOC && bss_conf->assoc) {
		if (vif->bss_conf.he_support)
			iwl_mvm_cfg_he_sta(mvm, vif, mvmvif->ap_sta_id);

2106
		iwl_mvm_mac_ctxt_recalc_tsf_id(mvm, vif);
2107
	}
2108

2109 2110 2111 2112 2113 2114 2115 2116 2117 2118
	/*
	 * If we're not associated yet, take the (new) BSSID before associating
	 * so the firmware knows. If we're already associated, then use the old
	 * BSSID here, and we'll send a cleared one later in the CHANGED_ASSOC
	 * branch for disassociation below.
	 */
	if (changes & BSS_CHANGED_BSSID && !mvmvif->associated)
		memcpy(mvmvif->bssid, bss_conf->bssid, ETH_ALEN);

	ret = iwl_mvm_mac_ctxt_changed(mvm, vif, false, mvmvif->bssid);
J
Johannes Berg 已提交
2119 2120 2121
	if (ret)
		IWL_ERR(mvm, "failed to update MAC %pM\n", vif->addr);

2122 2123 2124 2125
	/* after sending it once, adopt mac80211 data */
	memcpy(mvmvif->bssid, bss_conf->bssid, ETH_ALEN);
	mvmvif->associated = bss_conf->assoc;

J
Johannes Berg 已提交
2126 2127
	if (changes & BSS_CHANGED_ASSOC) {
		if (bss_conf->assoc) {
2128 2129 2130 2131 2132
			/* clear statistics to get clean beacon counter */
			iwl_mvm_request_statistics(mvm, true);
			memset(&mvmvif->beacon_stats, 0,
			       sizeof(mvmvif->beacon_stats));

J
Johannes Berg 已提交
2133
			/* add quota for this interface */
2134
			ret = iwl_mvm_update_quotas(mvm, true, NULL);
J
Johannes Berg 已提交
2135 2136 2137 2138
			if (ret) {
				IWL_ERR(mvm, "failed to update quotas\n");
				return;
			}
2139 2140 2141 2142 2143 2144 2145 2146 2147 2148 2149 2150 2151 2152 2153 2154 2155 2156 2157

			if (test_bit(IWL_MVM_STATUS_IN_HW_RESTART,
				     &mvm->status)) {
				/*
				 * If we're restarting then the firmware will
				 * obviously have lost synchronisation with
				 * the AP. It will attempt to synchronise by
				 * itself, but we can make it more reliable by
				 * scheduling a session protection time event.
				 *
				 * The firmware needs to receive a beacon to
				 * catch up with synchronisation, use 110% of
				 * the beacon interval.
				 *
				 * Set a large maximum delay to allow for more
				 * than a single interface.
				 */
				u32 dur = (11 * vif->bss_conf.beacon_int) / 10;
				iwl_mvm_protect_session(mvm, vif, dur, dur,
2158
							5 * dur, false);
2159
			}
2160 2161

			iwl_mvm_sf_update(mvm, vif, false);
2162
			iwl_mvm_power_vif_assoc(mvm, vif);
2163
			if (vif->p2p) {
2164
				iwl_mvm_ref(mvm, IWL_MVM_REF_P2P_CLIENT);
2165 2166 2167 2168
				iwl_mvm_update_smps(mvm, vif,
						    IWL_MVM_SMPS_REQ_PROT,
						    IEEE80211_SMPS_DYNAMIC);
			}
2169
		} else if (mvmvif->ap_sta_id != IWL_MVM_INVALID_STA) {
2170 2171 2172 2173 2174 2175 2176
			/*
			 * If update fails - SF might be running in associated
			 * mode while disassociated - which is forbidden.
			 */
			WARN_ONCE(iwl_mvm_sf_update(mvm, vif, false),
				  "Failed to update SF upon disassociation\n");

2177 2178 2179 2180 2181 2182 2183 2184 2185 2186 2187 2188 2189 2190 2191 2192 2193 2194 2195 2196 2197 2198 2199 2200 2201
			/*
			 * If we get an assert during the connection (after the
			 * station has been added, but before the vif is set
			 * to associated), mac80211 will re-add the station and
			 * then configure the vif. Since the vif is not
			 * associated, we would remove the station here and
			 * this would fail the recovery.
			 */
			if (!test_bit(IWL_MVM_STATUS_IN_HW_RESTART,
				      &mvm->status)) {
				/*
				 * Remove AP station now that
				 * the MAC is unassoc
				 */
				ret = iwl_mvm_rm_sta_id(mvm, vif,
							mvmvif->ap_sta_id);
				if (ret)
					IWL_ERR(mvm,
						"failed to remove AP station\n");

				if (mvm->d0i3_ap_sta_id == mvmvif->ap_sta_id)
					mvm->d0i3_ap_sta_id =
						IWL_MVM_INVALID_STA;
				mvmvif->ap_sta_id = IWL_MVM_INVALID_STA;
			}
2202

J
Johannes Berg 已提交
2203
			/* remove quota for this interface */
2204
			ret = iwl_mvm_update_quotas(mvm, false, NULL);
J
Johannes Berg 已提交
2205 2206
			if (ret)
				IWL_ERR(mvm, "failed to update quotas\n");
2207 2208 2209

			if (vif->p2p)
				iwl_mvm_unref(mvm, IWL_MVM_REF_P2P_CLIENT);
2210 2211 2212 2213 2214 2215 2216

			/* this will take the cleared BSSID from bss_conf */
			ret = iwl_mvm_mac_ctxt_changed(mvm, vif, false, NULL);
			if (ret)
				IWL_ERR(mvm,
					"failed to update MAC %pM (clear after unassoc)\n",
					vif->addr);
J
Johannes Berg 已提交
2217
		}
2218

2219 2220
		/*
		 * The firmware tracks the MU-MIMO group on its own.
2221
		 * However, on HW restart we should restore this data.
2222 2223
		 */
		if (test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status) &&
2224
		    (changes & BSS_CHANGED_MU_GROUPS) && vif->mu_mimo_owner) {
2225 2226 2227 2228 2229 2230
			ret = iwl_mvm_update_mu_groups(mvm, vif);
			if (ret)
				IWL_ERR(mvm,
					"failed to update VHT MU_MIMO groups\n");
		}

2231
		iwl_mvm_recalc_multicast(mvm);
2232
		iwl_mvm_configure_bcast_filter(mvm);
2233

2234 2235 2236
		/* reset rssi values */
		mvmvif->bf_data.ave_beacon_signal = 0;

2237
		iwl_mvm_bt_coex_vif_change(mvm);
2238 2239
		iwl_mvm_update_smps(mvm, vif, IWL_MVM_SMPS_REQ_TT,
				    IEEE80211_SMPS_AUTOMATIC);
2240 2241 2242
		if (fw_has_capa(&mvm->fw->ucode_capa,
				IWL_UCODE_TLV_CAPA_UMAC_SCAN))
			iwl_mvm_config_scan(mvm);
2243 2244 2245
	}

	if (changes & BSS_CHANGED_BEACON_INFO) {
2246
		/*
2247
		 * We received a beacon from the associated AP so
2248 2249
		 * remove the session protection.
		 */
2250
		iwl_mvm_stop_session_protection(mvm, vif);
2251 2252 2253 2254 2255

		iwl_mvm_sf_update(mvm, vif, false);
		WARN_ON(iwl_mvm_enable_beacon_filter(mvm, vif, 0));
	}

2256 2257 2258 2259 2260 2261
	if (changes & (BSS_CHANGED_PS | BSS_CHANGED_P2P_PS | BSS_CHANGED_QOS |
		       /*
			* Send power command on every beacon change,
			* because we may have not enabled beacon abort yet.
			*/
		       BSS_CHANGED_BEACON_INFO)) {
2262 2263 2264 2265 2266
		ret = iwl_mvm_power_update_mac(mvm);
		if (ret)
			IWL_ERR(mvm, "failed to update power mode\n");
	}

2267 2268 2269 2270 2271
	if (changes & BSS_CHANGED_TXPOWER) {
		IWL_DEBUG_CALIB(mvm, "Changing TX Power to %d\n",
				bss_conf->txpower);
		iwl_mvm_set_tx_power(mvm, vif, bss_conf->txpower);
	}
2272 2273

	if (changes & BSS_CHANGED_CQM) {
2274
		IWL_DEBUG_MAC80211(mvm, "cqm info_changed\n");
2275 2276
		/* reset cqm events tracking */
		mvmvif->bf_data.last_cqm_event = 0;
2277 2278 2279 2280 2281 2282
		if (mvmvif->bf_data.bf_enabled) {
			ret = iwl_mvm_enable_beacon_filter(mvm, vif, 0);
			if (ret)
				IWL_ERR(mvm,
					"failed to update CQM thresholds\n");
		}
2283
	}
2284 2285

	if (changes & BSS_CHANGED_ARP_FILTER) {
2286
		IWL_DEBUG_MAC80211(mvm, "arp filter changed\n");
2287
		iwl_mvm_configure_bcast_filter(mvm);
2288
	}
J
Johannes Berg 已提交
2289 2290
}

J
Johannes Berg 已提交
2291 2292
static int iwl_mvm_start_ap_ibss(struct ieee80211_hw *hw,
				 struct ieee80211_vif *vif)
J
Johannes Berg 已提交
2293 2294 2295 2296 2297
{
	struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
	struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
	int ret;

2298 2299 2300 2301 2302 2303 2304 2305
	/*
	 * iwl_mvm_mac_ctxt_add() might read directly from the device
	 * (the system time), so make sure it is available.
	 */
	ret = iwl_mvm_ref_sync(mvm, IWL_MVM_REF_START_AP);
	if (ret)
		return ret;

J
Johannes Berg 已提交
2306 2307 2308 2309 2310 2311 2312
	mutex_lock(&mvm->mutex);

	/* Send the beacon template */
	ret = iwl_mvm_mac_ctxt_beacon_changed(mvm, vif);
	if (ret)
		goto out_unlock;

2313 2314 2315 2316 2317 2318 2319
	/*
	 * Re-calculate the tsf id, as the master-slave relations depend on the
	 * beacon interval, which was not known when the AP interface was added.
	 */
	if (vif->type == NL80211_IFTYPE_AP)
		iwl_mvm_mac_ctxt_recalc_tsf_id(mvm, vif);

2320 2321
	mvmvif->ap_assoc_sta_count = 0;

J
Johannes Berg 已提交
2322 2323 2324 2325 2326 2327 2328 2329 2330 2331
	/* Add the mac context */
	ret = iwl_mvm_mac_ctxt_add(mvm, vif);
	if (ret)
		goto out_unlock;

	/* Perform the binding */
	ret = iwl_mvm_binding_add_vif(mvm, vif);
	if (ret)
		goto out_remove;

2332 2333 2334 2335 2336 2337 2338 2339 2340 2341 2342 2343 2344 2345 2346 2347 2348 2349 2350 2351 2352 2353 2354 2355 2356
	/*
	 * This is not very nice, but the simplest:
	 * For older FWs adding the mcast sta before the bcast station may
	 * cause assert 0x2b00.
	 * This is fixed in later FW so make the order of removal depend on
	 * the TLV
	 */
	if (fw_has_api(&mvm->fw->ucode_capa, IWL_UCODE_TLV_API_STA_TYPE)) {
		ret = iwl_mvm_add_mcast_sta(mvm, vif);
		if (ret)
			goto out_unbind;
		/*
		 * Send the bcast station. At this stage the TBTT and DTIM time
		 * events are added and applied to the scheduler
		 */
		ret = iwl_mvm_send_add_bcast_sta(mvm, vif);
		if (ret) {
			iwl_mvm_rm_mcast_sta(mvm, vif);
			goto out_unbind;
		}
	} else {
		/*
		 * Send the bcast station. At this stage the TBTT and DTIM time
		 * events are added and applied to the scheduler
		 */
2357
		ret = iwl_mvm_send_add_bcast_sta(mvm, vif);
2358 2359
		if (ret)
			goto out_unbind;
2360
		ret = iwl_mvm_add_mcast_sta(mvm, vif);
2361 2362 2363 2364 2365
		if (ret) {
			iwl_mvm_send_rm_bcast_sta(mvm, vif);
			goto out_unbind;
		}
	}
2366

2367 2368 2369
	/* must be set before quota calculations */
	mvmvif->ap_ibss_active = true;

2370
	/* power updated needs to be done before quotas */
2371
	iwl_mvm_power_update_mac(mvm);
2372

2373
	ret = iwl_mvm_update_quotas(mvm, false, NULL);
J
Johannes Berg 已提交
2374
	if (ret)
2375
		goto out_quota_failed;
J
Johannes Berg 已提交
2376

J
Johannes Berg 已提交
2377
	/* Need to update the P2P Device MAC (only GO, IBSS is single vif) */
J
Johannes Berg 已提交
2378
	if (vif->p2p && mvm->p2p_device_vif)
2379
		iwl_mvm_mac_ctxt_changed(mvm, mvm->p2p_device_vif, false, NULL);
J
Johannes Berg 已提交
2380

2381 2382
	iwl_mvm_ref(mvm, IWL_MVM_REF_AP_IBSS);

2383
	iwl_mvm_bt_coex_vif_change(mvm);
E
Emmanuel Grumbach 已提交
2384

2385 2386 2387 2388
	/* we don't support TDLS during DCM */
	if (iwl_mvm_phy_ctx_count(mvm) > 1)
		iwl_mvm_teardown_tdls_peers(mvm);

2389
	goto out_unlock;
J
Johannes Berg 已提交
2390

2391
out_quota_failed:
2392
	iwl_mvm_power_update_mac(mvm);
2393
	mvmvif->ap_ibss_active = false;
2394
	iwl_mvm_send_rm_bcast_sta(mvm, vif);
2395
	iwl_mvm_rm_mcast_sta(mvm, vif);
J
Johannes Berg 已提交
2396 2397 2398 2399 2400 2401
out_unbind:
	iwl_mvm_binding_remove_vif(mvm, vif);
out_remove:
	iwl_mvm_mac_ctxt_remove(mvm, vif);
out_unlock:
	mutex_unlock(&mvm->mutex);
2402
	iwl_mvm_unref(mvm, IWL_MVM_REF_START_AP);
J
Johannes Berg 已提交
2403 2404 2405
	return ret;
}

J
Johannes Berg 已提交
2406 2407
static void iwl_mvm_stop_ap_ibss(struct ieee80211_hw *hw,
				 struct ieee80211_vif *vif)
J
Johannes Berg 已提交
2408 2409 2410 2411
{
	struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
	struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);

2412 2413
	iwl_mvm_prepare_mac_removal(mvm, vif);

J
Johannes Berg 已提交
2414 2415
	mutex_lock(&mvm->mutex);

2416
	/* Handle AP stop while in CSA */
2417 2418 2419
	if (rcu_access_pointer(mvm->csa_vif) == vif) {
		iwl_mvm_remove_time_event(mvm, mvmvif,
					  &mvmvif->time_event_data);
2420
		RCU_INIT_POINTER(mvm->csa_vif, NULL);
2421
		mvmvif->csa_countdown = false;
2422
	}
2423

2424 2425 2426 2427 2428
	if (rcu_access_pointer(mvm->csa_tx_blocked_vif) == vif) {
		RCU_INIT_POINTER(mvm->csa_tx_blocked_vif, NULL);
		mvm->csa_tx_block_bcn_timeout = 0;
	}

J
Johannes Berg 已提交
2429
	mvmvif->ap_ibss_active = false;
2430
	mvm->ap_last_beacon_gp2 = 0;
J
Johannes Berg 已提交
2431

2432
	iwl_mvm_bt_coex_vif_change(mvm);
E
Emmanuel Grumbach 已提交
2433

2434 2435
	iwl_mvm_unref(mvm, IWL_MVM_REF_AP_IBSS);

J
Johannes Berg 已提交
2436
	/* Need to update the P2P Device MAC (only GO, IBSS is single vif) */
J
Johannes Berg 已提交
2437
	if (vif->p2p && mvm->p2p_device_vif)
2438
		iwl_mvm_mac_ctxt_changed(mvm, mvm->p2p_device_vif, false, NULL);
J
Johannes Berg 已提交
2439

2440
	iwl_mvm_update_quotas(mvm, false, NULL);
2441 2442 2443 2444 2445 2446 2447 2448 2449 2450 2451

	/*
	 * This is not very nice, but the simplest:
	 * For older FWs removing the mcast sta before the bcast station may
	 * cause assert 0x2b00.
	 * This is fixed in later FW (which will stop beaconing when removing
	 * bcast station).
	 * So make the order of removal depend on the TLV
	 */
	if (!fw_has_api(&mvm->fw->ucode_capa, IWL_UCODE_TLV_API_STA_TYPE))
		iwl_mvm_rm_mcast_sta(mvm, vif);
2452
	iwl_mvm_send_rm_bcast_sta(mvm, vif);
2453 2454
	if (fw_has_api(&mvm->fw->ucode_capa, IWL_UCODE_TLV_API_STA_TYPE))
		iwl_mvm_rm_mcast_sta(mvm, vif);
J
Johannes Berg 已提交
2455
	iwl_mvm_binding_remove_vif(mvm, vif);
2456

2457
	iwl_mvm_power_update_mac(mvm);
2458

J
Johannes Berg 已提交
2459 2460 2461 2462 2463
	iwl_mvm_mac_ctxt_remove(mvm, vif);

	mutex_unlock(&mvm->mutex);
}

J
Johannes Berg 已提交
2464 2465 2466 2467 2468
static void
iwl_mvm_bss_info_changed_ap_ibss(struct iwl_mvm *mvm,
				 struct ieee80211_vif *vif,
				 struct ieee80211_bss_conf *bss_conf,
				 u32 changes)
J
Johannes Berg 已提交
2469
{
2470
	struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
2471

2472 2473 2474 2475
	/* Changes will be applied when the AP/IBSS is started */
	if (!mvmvif->ap_ibss_active)
		return;

2476
	if (changes & (BSS_CHANGED_ERP_CTS_PROT | BSS_CHANGED_HT |
2477
		       BSS_CHANGED_BANDWIDTH | BSS_CHANGED_QOS) &&
2478
	    iwl_mvm_mac_ctxt_changed(mvm, vif, false, NULL))
2479
		IWL_ERR(mvm, "failed to update MAC %pM\n", vif->addr);
2480

J
Johannes Berg 已提交
2481
	/* Need to send a new beacon template to the FW */
2482 2483 2484
	if (changes & BSS_CHANGED_BEACON &&
	    iwl_mvm_mac_ctxt_beacon_changed(mvm, vif))
		IWL_WARN(mvm, "Failed updating beacon data\n");
2485 2486 2487 2488 2489 2490

	if (changes & BSS_CHANGED_TXPOWER) {
		IWL_DEBUG_CALIB(mvm, "Changing TX Power to %d\n",
				bss_conf->txpower);
		iwl_mvm_set_tx_power(mvm, vif, bss_conf->txpower);
	}
J
Johannes Berg 已提交
2491 2492 2493 2494 2495 2496 2497 2498 2499
}

static void iwl_mvm_bss_info_changed(struct ieee80211_hw *hw,
				     struct ieee80211_vif *vif,
				     struct ieee80211_bss_conf *bss_conf,
				     u32 changes)
{
	struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);

2500 2501 2502 2503 2504 2505 2506 2507
	/*
	 * iwl_mvm_bss_info_changed_station() might call
	 * iwl_mvm_protect_session(), which reads directly from
	 * the device (the system time), so make sure it is available.
	 */
	if (iwl_mvm_ref_sync(mvm, IWL_MVM_REF_BSS_CHANGED))
		return;

J
Johannes Berg 已提交
2508 2509
	mutex_lock(&mvm->mutex);

2510
	if (changes & BSS_CHANGED_IDLE && !bss_conf->idle)
2511
		iwl_mvm_scan_stop(mvm, IWL_MVM_SCAN_SCHED, true);
2512

J
Johannes Berg 已提交
2513 2514 2515 2516 2517
	switch (vif->type) {
	case NL80211_IFTYPE_STATION:
		iwl_mvm_bss_info_changed_station(mvm, vif, bss_conf, changes);
		break;
	case NL80211_IFTYPE_AP:
J
Johannes Berg 已提交
2518 2519
	case NL80211_IFTYPE_ADHOC:
		iwl_mvm_bss_info_changed_ap_ibss(mvm, vif, bss_conf, changes);
J
Johannes Berg 已提交
2520
		break;
2521 2522 2523 2524
	case NL80211_IFTYPE_MONITOR:
		if (changes & BSS_CHANGED_MU_GROUPS)
			iwl_mvm_update_mu_groups(mvm, vif);
		break;
J
Johannes Berg 已提交
2525 2526 2527 2528 2529 2530
	default:
		/* shouldn't happen */
		WARN_ON_ONCE(1);
	}

	mutex_unlock(&mvm->mutex);
2531
	iwl_mvm_unref(mvm, IWL_MVM_REF_BSS_CHANGED);
J
Johannes Berg 已提交
2532 2533 2534 2535
}

static int iwl_mvm_mac_hw_scan(struct ieee80211_hw *hw,
			       struct ieee80211_vif *vif,
2536
			       struct ieee80211_scan_request *hw_req)
J
Johannes Berg 已提交
2537 2538 2539 2540
{
	struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
	int ret;

2541 2542
	if (hw_req->req.n_channels == 0 ||
	    hw_req->req.n_channels > mvm->fw->ucode_capa.n_scan_channels)
J
Johannes Berg 已提交
2543 2544 2545
		return -EINVAL;

	mutex_lock(&mvm->mutex);
2546
	ret = iwl_mvm_reg_scan_start(mvm, vif, &hw_req->req, &hw_req->ies);
J
Johannes Berg 已提交
2547
	mutex_unlock(&mvm->mutex);
2548

J
Johannes Berg 已提交
2549 2550 2551 2552 2553 2554 2555 2556 2557 2558
	return ret;
}

static void iwl_mvm_mac_cancel_hw_scan(struct ieee80211_hw *hw,
				       struct ieee80211_vif *vif)
{
	struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);

	mutex_lock(&mvm->mutex);

2559 2560 2561 2562 2563 2564 2565
	/* Due to a race condition, it's possible that mac80211 asks
	 * us to stop a hw_scan when it's already stopped.  This can
	 * happen, for instance, if we stopped the scan ourselves,
	 * called ieee80211_scan_completed() and the userspace called
	 * cancel scan scan before ieee80211_scan_work() could run.
	 * To handle that, simply return if the scan is not running.
	*/
2566
	if (mvm->scan_status & IWL_MVM_SCAN_REGULAR)
2567
		iwl_mvm_scan_stop(mvm, IWL_MVM_SCAN_REGULAR, true);
J
Johannes Berg 已提交
2568 2569 2570 2571 2572 2573

	mutex_unlock(&mvm->mutex);
}

static void
iwl_mvm_mac_allow_buffered_frames(struct ieee80211_hw *hw,
2574
				  struct ieee80211_sta *sta, u16 tids,
J
Johannes Berg 已提交
2575 2576 2577 2578 2579 2580
				  int num_frames,
				  enum ieee80211_frame_release_type reason,
				  bool more_data)
{
	struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);

2581
	/* Called when we need to transmit (a) frame(s) from mac80211 */
J
Johannes Berg 已提交
2582

2583 2584 2585 2586 2587 2588 2589 2590 2591 2592 2593 2594 2595
	iwl_mvm_sta_modify_sleep_tx_count(mvm, sta, reason, num_frames,
					  tids, more_data, false);
}

static void
iwl_mvm_mac_release_buffered_frames(struct ieee80211_hw *hw,
				    struct ieee80211_sta *sta, u16 tids,
				    int num_frames,
				    enum ieee80211_frame_release_type reason,
				    bool more_data)
{
	struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);

2596
	/* Called when we need to transmit (a) frame(s) from agg or dqa queue */
2597 2598 2599

	iwl_mvm_sta_modify_sleep_tx_count(mvm, sta, reason, num_frames,
					  tids, more_data, true);
J
Johannes Berg 已提交
2600 2601
}

2602 2603 2604
static void __iwl_mvm_mac_sta_notify(struct ieee80211_hw *hw,
				     enum sta_notify_cmd cmd,
				     struct ieee80211_sta *sta)
J
Johannes Berg 已提交
2605 2606
{
	struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2607
	struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta);
2608
	unsigned long txqs = 0, tids = 0;
2609
	int tid;
J
Johannes Berg 已提交
2610

2611 2612 2613 2614 2615 2616 2617 2618
	/*
	 * If we have TVQM then we get too high queue numbers - luckily
	 * we really shouldn't get here with that because such hardware
	 * should have firmware supporting buffer station offload.
	 */
	if (WARN_ON(iwl_mvm_has_new_tx_api(mvm)))
		return;

2619 2620 2621 2622
	spin_lock_bh(&mvmsta->lock);
	for (tid = 0; tid < IWL_MAX_TID_COUNT; tid++) {
		struct iwl_mvm_tid_data *tid_data = &mvmsta->tid_data[tid];

2623
		if (tid_data->txq_id == IWL_MVM_INVALID_QUEUE)
2624 2625
			continue;

2626 2627
		__set_bit(tid_data->txq_id, &txqs);

2628
		if (iwl_mvm_tid_queued(mvm, tid_data) == 0)
2629 2630 2631 2632 2633
			continue;

		__set_bit(tid, &tids);
	}

J
Johannes Berg 已提交
2634 2635
	switch (cmd) {
	case STA_NOTIFY_SLEEP:
2636
		for_each_set_bit(tid, &tids, IWL_MAX_TID_COUNT)
2637
			ieee80211_sta_set_buffered(sta, tid, true);
2638 2639 2640

		if (txqs)
			iwl_trans_freeze_txq_timer(mvm->trans, txqs, true);
J
Johannes Berg 已提交
2641 2642 2643 2644 2645 2646 2647
		/*
		 * The fw updates the STA to be asleep. Tx packets on the Tx
		 * queues to this station will not be transmitted. The fw will
		 * send a Tx response with TX_STATUS_FAIL_DEST_PS.
		 */
		break;
	case STA_NOTIFY_AWAKE:
2648
		if (WARN_ON(mvmsta->sta_id == IWL_MVM_INVALID_STA))
J
Johannes Berg 已提交
2649
			break;
2650 2651 2652

		if (txqs)
			iwl_trans_freeze_txq_timer(mvm->trans, txqs, false);
2653
		iwl_mvm_sta_modify_ps_wake(mvm, sta);
J
Johannes Berg 已提交
2654 2655 2656 2657
		break;
	default:
		break;
	}
2658
	spin_unlock_bh(&mvmsta->lock);
J
Johannes Berg 已提交
2659 2660
}

2661 2662 2663 2664 2665 2666 2667 2668 2669 2670 2671 2672 2673 2674 2675 2676 2677 2678 2679 2680
static void iwl_mvm_mac_sta_notify(struct ieee80211_hw *hw,
				   struct ieee80211_vif *vif,
				   enum sta_notify_cmd cmd,
				   struct ieee80211_sta *sta)
{
	__iwl_mvm_mac_sta_notify(hw, cmd, sta);
}

void iwl_mvm_sta_pm_notif(struct iwl_mvm *mvm, struct iwl_rx_cmd_buffer *rxb)
{
	struct iwl_rx_packet *pkt = rxb_addr(rxb);
	struct iwl_mvm_pm_state_notification *notif = (void *)pkt->data;
	struct ieee80211_sta *sta;
	struct iwl_mvm_sta *mvmsta;
	bool sleeping = (notif->type != IWL_MVM_PM_EVENT_AWAKE);

	if (WARN_ON(notif->sta_id >= ARRAY_SIZE(mvm->fw_id_to_mac_id)))
		return;

	rcu_read_lock();
2681
	sta = rcu_dereference(mvm->fw_id_to_mac_id[notif->sta_id]);
2682 2683 2684 2685 2686 2687 2688 2689 2690 2691 2692 2693 2694 2695 2696 2697 2698 2699 2700 2701 2702 2703 2704 2705 2706 2707 2708 2709 2710 2711 2712 2713 2714 2715 2716 2717 2718 2719 2720 2721
	if (WARN_ON(IS_ERR_OR_NULL(sta))) {
		rcu_read_unlock();
		return;
	}

	mvmsta = iwl_mvm_sta_from_mac80211(sta);

	if (!mvmsta->vif ||
	    mvmsta->vif->type != NL80211_IFTYPE_AP) {
		rcu_read_unlock();
		return;
	}

	if (mvmsta->sleeping != sleeping) {
		mvmsta->sleeping = sleeping;
		__iwl_mvm_mac_sta_notify(mvm->hw,
			sleeping ? STA_NOTIFY_SLEEP : STA_NOTIFY_AWAKE,
			sta);
		ieee80211_sta_ps_transition(sta, sleeping);
	}

	if (sleeping) {
		switch (notif->type) {
		case IWL_MVM_PM_EVENT_AWAKE:
		case IWL_MVM_PM_EVENT_ASLEEP:
			break;
		case IWL_MVM_PM_EVENT_UAPSD:
			ieee80211_sta_uapsd_trigger(sta, IEEE80211_NUM_TIDS);
			break;
		case IWL_MVM_PM_EVENT_PS_POLL:
			ieee80211_sta_pspoll(sta);
			break;
		default:
			break;
		}
	}

	rcu_read_unlock();
}

2722 2723 2724 2725 2726
static void iwl_mvm_sta_pre_rcu_remove(struct ieee80211_hw *hw,
				       struct ieee80211_vif *vif,
				       struct ieee80211_sta *sta)
{
	struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2727
	struct iwl_mvm_sta *mvm_sta = iwl_mvm_sta_from_mac80211(sta);
2728 2729 2730 2731 2732 2733 2734 2735 2736 2737 2738 2739 2740

	/*
	 * This is called before mac80211 does RCU synchronisation,
	 * so here we already invalidate our internal RCU-protected
	 * station pointer. The rest of the code will thus no longer
	 * be able to find the station this way, and we don't rely
	 * on further RCU synchronisation after the sta_state()
	 * callback deleted the station.
	 */
	mutex_lock(&mvm->mutex);
	if (sta == rcu_access_pointer(mvm->fw_id_to_mac_id[mvm_sta->sta_id]))
		rcu_assign_pointer(mvm->fw_id_to_mac_id[mvm_sta->sta_id],
				   ERR_PTR(-ENOENT));
2741

2742 2743 2744
	mutex_unlock(&mvm->mutex);
}

2745 2746 2747
static void iwl_mvm_check_uapsd(struct iwl_mvm *mvm, struct ieee80211_vif *vif,
				const u8 *bssid)
{
2748 2749 2750 2751 2752 2753 2754 2755 2756 2757
	int i;

	if (!test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status)) {
		struct iwl_mvm_tcm_mac *mdata;

		mdata = &mvm->tcm.data[iwl_mvm_vif_from_mac80211(vif)->id];
		ewma_rate_init(&mdata->uapsd_nonagg_detect.rate);
		mdata->opened_rx_ba_sessions = false;
	}

2758 2759 2760
	if (!(mvm->fw->ucode_capa.flags & IWL_UCODE_TLV_FLAGS_UAPSD_SUPPORT))
		return;

2761
	if (vif->p2p && !iwl_mvm_is_p2p_scm_uapsd_supported(mvm)) {
2762 2763 2764 2765
		vif->driver_flags &= ~IEEE80211_VIF_SUPPORTS_UAPSD;
		return;
	}

2766 2767
	if (!vif->p2p &&
	    (iwlwifi_mod_params.uapsd_disable & IWL_DISABLE_UAPSD_BSS)) {
2768 2769 2770 2771
		vif->driver_flags &= ~IEEE80211_VIF_SUPPORTS_UAPSD;
		return;
	}

2772 2773 2774 2775 2776 2777 2778
	for (i = 0; i < IWL_MVM_UAPSD_NOAGG_LIST_LEN; i++) {
		if (ether_addr_equal(mvm->uapsd_noagg_bssids[i].addr, bssid)) {
			vif->driver_flags &= ~IEEE80211_VIF_SUPPORTS_UAPSD;
			return;
		}
	}

2779 2780 2781
	vif->driver_flags |= IEEE80211_VIF_SUPPORTS_UAPSD;
}

2782 2783 2784 2785 2786 2787 2788 2789 2790 2791 2792 2793 2794
static void
iwl_mvm_tdls_check_trigger(struct iwl_mvm *mvm,
			   struct ieee80211_vif *vif, u8 *peer_addr,
			   enum nl80211_tdls_operation action)
{
	struct iwl_fw_dbg_trigger_tlv *trig;
	struct iwl_fw_dbg_trigger_tdls *tdls_trig;

	if (!iwl_fw_dbg_trigger_enabled(mvm->fw, FW_DBG_TRIGGER_TDLS))
		return;

	trig = iwl_fw_dbg_get_trigger(mvm->fw, FW_DBG_TRIGGER_TDLS);
	tdls_trig = (void *)trig->data;
2795 2796
	if (!iwl_fw_dbg_trigger_check_stop(&mvm->fwrt,
					   ieee80211_vif_to_wdev(vif), trig))
2797 2798 2799 2800 2801 2802 2803 2804 2805
		return;

	if (!(tdls_trig->action_bitmap & BIT(action)))
		return;

	if (tdls_trig->peer_mode &&
	    memcmp(tdls_trig->peer, peer_addr, ETH_ALEN) != 0)
		return;

2806 2807 2808
	iwl_fw_dbg_collect_trig(&mvm->fwrt, trig,
				"TDLS event occurred, peer %pM, action %d",
				peer_addr, action);
2809 2810
}

2811 2812 2813 2814 2815 2816 2817 2818 2819 2820
static void iwl_mvm_purge_deferred_tx_frames(struct iwl_mvm *mvm,
					     struct iwl_mvm_sta *mvm_sta)
{
	struct iwl_mvm_tid_data *tid_data;
	struct sk_buff *skb;
	int i;

	spin_lock_bh(&mvm_sta->lock);
	for (i = 0; i <= IWL_MAX_TID_COUNT; i++) {
		tid_data = &mvm_sta->tid_data[i];
2821 2822 2823 2824 2825 2826 2827 2828 2829

		while ((skb = __skb_dequeue(&tid_data->deferred_tx_frames))) {
			struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);

			/*
			 * The first deferred frame should've stopped the MAC
			 * queues, so we should never get a second deferred
			 * frame for the RA/TID.
			 */
2830
			iwl_mvm_start_mac_queues(mvm, BIT(info->hw_queue));
2831
			ieee80211_free_txskb(mvm->hw, skb);
2832
		}
2833 2834 2835 2836
	}
	spin_unlock_bh(&mvm_sta->lock);
}

J
Johannes Berg 已提交
2837 2838 2839 2840 2841 2842 2843 2844
static int iwl_mvm_mac_sta_state(struct ieee80211_hw *hw,
				 struct ieee80211_vif *vif,
				 struct ieee80211_sta *sta,
				 enum ieee80211_sta_state old_state,
				 enum ieee80211_sta_state new_state)
{
	struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
	struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
2845
	struct iwl_mvm_sta *mvm_sta = iwl_mvm_sta_from_mac80211(sta);
J
Johannes Berg 已提交
2846 2847 2848 2849 2850 2851 2852 2853 2854
	int ret;

	IWL_DEBUG_MAC80211(mvm, "station %pM state change %d->%d\n",
			   sta->addr, old_state, new_state);

	/* this would be a mac80211 bug ... but don't crash */
	if (WARN_ON_ONCE(!mvmvif->phy_ctxt))
		return -EINVAL;

2855 2856 2857 2858 2859 2860 2861 2862 2863 2864 2865 2866 2867 2868
	/*
	 * If we are in a STA removal flow and in DQA mode:
	 *
	 * This is after the sync_rcu part, so the queues have already been
	 * flushed. No more TXs on their way in mac80211's path, and no more in
	 * the queues.
	 * Also, we won't be getting any new TX frames for this station.
	 * What we might have are deferred TX frames that need to be taken care
	 * of.
	 *
	 * Drop any still-queued deferred-frame before removing the STA, and
	 * make sure the worker is no longer handling frames for this STA.
	 */
	if (old_state == IEEE80211_STA_NONE &&
2869
	    new_state == IEEE80211_STA_NOTEXIST) {
2870 2871 2872 2873 2874 2875 2876 2877 2878
		iwl_mvm_purge_deferred_tx_frames(mvm, mvm_sta);
		flush_work(&mvm->add_stream_wk);

		/*
		 * No need to make sure deferred TX indication is off since the
		 * worker will already remove it if it was on
		 */
	}

J
Johannes Berg 已提交
2879
	mutex_lock(&mvm->mutex);
2880
	/* track whether or not the station is associated */
2881
	mvm_sta->sta_state = new_state;
2882

J
Johannes Berg 已提交
2883 2884
	if (old_state == IEEE80211_STA_NOTEXIST &&
	    new_state == IEEE80211_STA_NONE) {
2885 2886 2887 2888 2889 2890 2891 2892 2893 2894 2895 2896 2897 2898 2899
		/*
		 * Firmware bug - it'll crash if the beacon interval is less
		 * than 16. We can't avoid connecting at all, so refuse the
		 * station state change, this will cause mac80211 to abandon
		 * attempts to connect to this AP, and eventually wpa_s will
		 * blacklist the AP...
		 */
		if (vif->type == NL80211_IFTYPE_STATION &&
		    vif->bss_conf.beacon_int < 16) {
			IWL_ERR(mvm,
				"AP %pM beacon interval is %d, refusing due to firmware bug!\n",
				sta->addr, vif->bss_conf.beacon_int);
			ret = -EINVAL;
			goto out_unlock;
		}
2900 2901 2902

		if (sta->tdls &&
		    (vif->p2p ||
2903 2904
		     iwl_mvm_tdls_sta_count(mvm, NULL) ==
						IWL_MVM_TDLS_STA_COUNT ||
2905 2906 2907 2908 2909 2910
		     iwl_mvm_phy_ctx_count(mvm) > 1)) {
			IWL_DEBUG_MAC80211(mvm, "refusing TDLS sta\n");
			ret = -EBUSY;
			goto out_unlock;
		}

J
Johannes Berg 已提交
2911
		ret = iwl_mvm_add_sta(mvm, vif, sta);
2912
		if (sta->tdls && ret == 0) {
2913
			iwl_mvm_recalc_tdls_state(mvm, vif, true);
2914 2915 2916
			iwl_mvm_tdls_check_trigger(mvm, vif, sta->addr,
						   NL80211_TDLS_SETUP);
		}
J
Johannes Berg 已提交
2917 2918
	} else if (old_state == IEEE80211_STA_NONE &&
		   new_state == IEEE80211_STA_AUTH) {
2919 2920 2921 2922 2923
		/*
		 * EBS may be disabled due to previous failures reported by FW.
		 * Reset EBS status here assuming environment has been changed.
		 */
		mvm->last_ebs_successful = true;
2924
		iwl_mvm_check_uapsd(mvm, vif, sta->addr);
J
Johannes Berg 已提交
2925 2926 2927
		ret = 0;
	} else if (old_state == IEEE80211_STA_AUTH &&
		   new_state == IEEE80211_STA_ASSOC) {
2928 2929 2930 2931
		if (vif->type == NL80211_IFTYPE_AP) {
			mvmvif->ap_assoc_sta_count++;
			iwl_mvm_mac_ctxt_changed(mvm, vif, false, NULL);
		}
2932

2933
		iwl_mvm_rs_rate_init(mvm, sta, mvmvif->phy_ctxt->channel->band);
2934
		ret = iwl_mvm_update_sta(mvm, vif, sta);
J
Johannes Berg 已提交
2935 2936
	} else if (old_state == IEEE80211_STA_ASSOC &&
		   new_state == IEEE80211_STA_AUTHORIZED) {
2937 2938 2939 2940 2941

		/* we don't support TDLS during DCM */
		if (iwl_mvm_phy_ctx_count(mvm) > 1)
			iwl_mvm_teardown_tdls_peers(mvm);

2942 2943 2944 2945
		if (sta->tdls)
			iwl_mvm_tdls_check_trigger(mvm, vif, sta->addr,
						   NL80211_TDLS_ENABLE_LINK);

2946
		/* enable beacon filtering */
2947
		WARN_ON(iwl_mvm_enable_beacon_filter(mvm, vif, 0));
2948

2949
		iwl_mvm_rs_rate_init(mvm, sta, mvmvif->phy_ctxt->channel->band);
2950

J
Johannes Berg 已提交
2951 2952 2953
		ret = 0;
	} else if (old_state == IEEE80211_STA_AUTHORIZED &&
		   new_state == IEEE80211_STA_ASSOC) {
2954
		/* disable beacon filtering */
E
Emmanuel Grumbach 已提交
2955
		WARN_ON(iwl_mvm_disable_beacon_filter(mvm, vif, 0));
J
Johannes Berg 已提交
2956 2957 2958
		ret = 0;
	} else if (old_state == IEEE80211_STA_ASSOC &&
		   new_state == IEEE80211_STA_AUTH) {
2959 2960 2961 2962
		if (vif->type == NL80211_IFTYPE_AP) {
			mvmvif->ap_assoc_sta_count--;
			iwl_mvm_mac_ctxt_changed(mvm, vif, false, NULL);
		}
J
Johannes Berg 已提交
2963 2964 2965 2966 2967 2968 2969
		ret = 0;
	} else if (old_state == IEEE80211_STA_AUTH &&
		   new_state == IEEE80211_STA_NONE) {
		ret = 0;
	} else if (old_state == IEEE80211_STA_NONE &&
		   new_state == IEEE80211_STA_NOTEXIST) {
		ret = iwl_mvm_rm_sta(mvm, vif, sta);
2970
		if (sta->tdls) {
2971
			iwl_mvm_recalc_tdls_state(mvm, vif, false);
2972 2973 2974
			iwl_mvm_tdls_check_trigger(mvm, vif, sta->addr,
						   NL80211_TDLS_DISABLE_LINK);
		}
J
Johannes Berg 已提交
2975 2976 2977
	} else {
		ret = -EIO;
	}
2978
 out_unlock:
J
Johannes Berg 已提交
2979 2980
	mutex_unlock(&mvm->mutex);

2981 2982 2983 2984 2985 2986 2987 2988 2989
	if (sta->tdls && ret == 0) {
		if (old_state == IEEE80211_STA_NOTEXIST &&
		    new_state == IEEE80211_STA_NONE)
			ieee80211_reserve_tid(sta, IWL_MVM_TDLS_FW_TID);
		else if (old_state == IEEE80211_STA_NONE &&
			 new_state == IEEE80211_STA_NOTEXIST)
			ieee80211_unreserve_tid(sta, IWL_MVM_TDLS_FW_TID);
	}

J
Johannes Berg 已提交
2990 2991 2992 2993 2994 2995 2996 2997 2998 2999 3000 3001
	return ret;
}

static int iwl_mvm_mac_set_rts_threshold(struct ieee80211_hw *hw, u32 value)
{
	struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);

	mvm->rts_threshold = value;

	return 0;
}

3002 3003 3004 3005 3006 3007 3008 3009 3010 3011 3012
static void iwl_mvm_sta_rc_update(struct ieee80211_hw *hw,
				  struct ieee80211_vif *vif,
				  struct ieee80211_sta *sta, u32 changed)
{
	struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);

	if (vif->type == NL80211_IFTYPE_STATION &&
	    changed & IEEE80211_RC_NSS_CHANGED)
		iwl_mvm_sf_update(mvm, vif, false);
}

J
Johannes Berg 已提交
3013 3014 3015 3016 3017 3018 3019 3020 3021 3022 3023 3024 3025 3026 3027 3028 3029
static int iwl_mvm_mac_conf_tx(struct ieee80211_hw *hw,
			       struct ieee80211_vif *vif, u16 ac,
			       const struct ieee80211_tx_queue_params *params)
{
	struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
	struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);

	mvmvif->queue_params[ac] = *params;

	/*
	 * No need to update right away, we'll get BSS_CHANGED_QOS
	 * The exception is P2P_DEVICE interface which needs immediate update.
	 */
	if (vif->type == NL80211_IFTYPE_P2P_DEVICE) {
		int ret;

		mutex_lock(&mvm->mutex);
3030
		ret = iwl_mvm_mac_ctxt_changed(mvm, vif, false, NULL);
J
Johannes Berg 已提交
3031 3032 3033 3034 3035 3036 3037
		mutex_unlock(&mvm->mutex);
		return ret;
	}
	return 0;
}

static void iwl_mvm_mac_mgd_prepare_tx(struct ieee80211_hw *hw,
3038 3039
				       struct ieee80211_vif *vif,
				       u16 req_duration)
J
Johannes Berg 已提交
3040 3041
{
	struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3042 3043
	u32 duration = IWL_MVM_TE_SESSION_PROTECTION_MAX_TIME_MS;
	u32 min_duration = IWL_MVM_TE_SESSION_PROTECTION_MIN_TIME_MS;
J
Johannes Berg 已提交
3044

3045 3046 3047 3048 3049 3050 3051
	/*
	 * iwl_mvm_protect_session() reads directly from the device
	 * (the system time), so make sure it is available.
	 */
	if (iwl_mvm_ref_sync(mvm, IWL_MVM_REF_PREPARE_TX))
		return;

3052 3053 3054
	if (req_duration > duration)
		duration = req_duration;

J
Johannes Berg 已提交
3055 3056
	mutex_lock(&mvm->mutex);
	/* Try really hard to protect the session and hear a beacon */
3057
	iwl_mvm_protect_session(mvm, vif, duration, min_duration, 500, false);
J
Johannes Berg 已提交
3058
	mutex_unlock(&mvm->mutex);
3059 3060

	iwl_mvm_unref(mvm, IWL_MVM_REF_PREPARE_TX);
J
Johannes Berg 已提交
3061 3062
}

3063 3064 3065
static int iwl_mvm_mac_sched_scan_start(struct ieee80211_hw *hw,
					struct ieee80211_vif *vif,
					struct cfg80211_sched_scan_request *req,
D
David Spinadel 已提交
3066
					struct ieee80211_scan_ies *ies)
3067 3068 3069 3070
{
	struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);

	int ret;
3071

3072 3073
	mutex_lock(&mvm->mutex);

3074
	if (!vif->bss_conf.idle) {
3075 3076 3077 3078
		ret = -EBUSY;
		goto out;
	}

3079
	ret = iwl_mvm_sched_scan_start(mvm, vif, req, ies, IWL_MVM_SCAN_SCHED);
3080

3081 3082 3083 3084 3085
out:
	mutex_unlock(&mvm->mutex);
	return ret;
}

3086 3087
static int iwl_mvm_mac_sched_scan_stop(struct ieee80211_hw *hw,
				       struct ieee80211_vif *vif)
3088 3089
{
	struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3090
	int ret;
3091 3092

	mutex_lock(&mvm->mutex);
3093 3094 3095 3096 3097 3098 3099 3100 3101

	/* Due to a race condition, it's possible that mac80211 asks
	 * us to stop a sched_scan when it's already stopped.  This
	 * can happen, for instance, if we stopped the scan ourselves,
	 * called ieee80211_sched_scan_stopped() and the userspace called
	 * stop sched scan scan before ieee80211_sched_scan_stopped_work()
	 * could run.  To handle this, simply return if the scan is
	 * not running.
	*/
3102
	if (!(mvm->scan_status & IWL_MVM_SCAN_SCHED)) {
3103 3104 3105 3106
		mutex_unlock(&mvm->mutex);
		return 0;
	}

3107
	ret = iwl_mvm_scan_stop(mvm, IWL_MVM_SCAN_SCHED, false);
3108
	mutex_unlock(&mvm->mutex);
3109
	iwl_mvm_wait_for_async_handlers(mvm);
3110

3111
	return ret;
3112 3113
}

J
Johannes Berg 已提交
3114 3115 3116 3117 3118 3119 3120
static int iwl_mvm_mac_set_key(struct ieee80211_hw *hw,
			       enum set_key_cmd cmd,
			       struct ieee80211_vif *vif,
			       struct ieee80211_sta *sta,
			       struct ieee80211_key_conf *key)
{
	struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3121 3122 3123
	struct iwl_mvm_sta *mvmsta;
	struct iwl_mvm_key_pn *ptk_pn;
	int keyidx = key->keyidx;
J
Johannes Berg 已提交
3124
	int ret;
3125
	u8 key_offset;
J
Johannes Berg 已提交
3126

3127
	if (iwlwifi_mod_params.swcrypto) {
J
Johannes Berg 已提交
3128 3129 3130 3131 3132 3133 3134
		IWL_DEBUG_MAC80211(mvm, "leave - hwcrypto disabled\n");
		return -EOPNOTSUPP;
	}

	switch (key->cipher) {
	case WLAN_CIPHER_SUITE_TKIP:
		key->flags |= IEEE80211_KEY_FLAG_GENERATE_MMIC;
3135
		key->flags |= IEEE80211_KEY_FLAG_PUT_IV_SPACE;
J
Johannes Berg 已提交
3136
		break;
3137
	case WLAN_CIPHER_SUITE_CCMP:
3138 3139
	case WLAN_CIPHER_SUITE_GCMP:
	case WLAN_CIPHER_SUITE_GCMP_256:
3140 3141
		if (!iwl_mvm_has_new_tx_api(mvm))
			key->flags |= IEEE80211_KEY_FLAG_PUT_IV_SPACE;
3142
		break;
J
Johannes Berg 已提交
3143
	case WLAN_CIPHER_SUITE_AES_CMAC:
3144 3145
	case WLAN_CIPHER_SUITE_BIP_GMAC_128:
	case WLAN_CIPHER_SUITE_BIP_GMAC_256:
3146
		WARN_ON_ONCE(!ieee80211_hw_check(hw, MFP_CAPABLE));
J
Johannes Berg 已提交
3147 3148 3149
		break;
	case WLAN_CIPHER_SUITE_WEP40:
	case WLAN_CIPHER_SUITE_WEP104:
3150 3151 3152 3153 3154 3155
		/* For non-client mode, only use WEP keys for TX as we probably
		 * don't have a station yet anyway and would then have to keep
		 * track of the keys, linking them to each of the clients/peers
		 * as they appear. For now, don't do that, for performance WEP
		 * offload doesn't really matter much, but we need it for some
		 * other offload features in client mode.
J
Johannes Berg 已提交
3156
		 */
3157 3158 3159
		if (vif->type != NL80211_IFTYPE_STATION)
			return 0;
		break;
J
Johannes Berg 已提交
3160
	default:
3161 3162 3163 3164 3165 3166
		/* currently FW supports only one optional cipher scheme */
		if (hw->n_cipher_schemes &&
		    hw->cipher_schemes->cipher == key->cipher)
			key->flags |= IEEE80211_KEY_FLAG_PUT_IV_SPACE;
		else
			return -EOPNOTSUPP;
J
Johannes Berg 已提交
3167 3168 3169 3170 3171 3172
	}

	mutex_lock(&mvm->mutex);

	switch (cmd) {
	case SET_KEY:
J
Johannes Berg 已提交
3173 3174 3175 3176 3177 3178
		if ((vif->type == NL80211_IFTYPE_ADHOC ||
		     vif->type == NL80211_IFTYPE_AP) && !sta) {
			/*
			 * GTK on AP interface is a TX-only key, return 0;
			 * on IBSS they're per-station and because we're lazy
			 * we don't support them for RX, so do the same.
3179
			 * CMAC/GMAC in AP/IBSS modes must be done in software.
J
Johannes Berg 已提交
3180
			 */
3181 3182 3183
			if (key->cipher == WLAN_CIPHER_SUITE_AES_CMAC ||
			    key->cipher == WLAN_CIPHER_SUITE_BIP_GMAC_128 ||
			    key->cipher == WLAN_CIPHER_SUITE_BIP_GMAC_256)
3184 3185 3186
				ret = -EOPNOTSUPP;
			else
				ret = 0;
3187 3188 3189 3190 3191 3192 3193

			if (key->cipher != WLAN_CIPHER_SUITE_GCMP &&
			    key->cipher != WLAN_CIPHER_SUITE_GCMP_256 &&
			    !iwl_mvm_has_new_tx_api(mvm)) {
				key->hw_key_idx = STA_KEY_IDX_INVALID;
				break;
			}
3194 3195
		}

3196 3197 3198 3199 3200 3201 3202 3203 3204 3205 3206
		/* During FW restart, in order to restore the state as it was,
		 * don't try to reprogram keys we previously failed for.
		 */
		if (test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status) &&
		    key->hw_key_idx == STA_KEY_IDX_INVALID) {
			IWL_DEBUG_MAC80211(mvm,
					   "skip invalid idx key programming during restart\n");
			ret = 0;
			break;
		}

3207 3208 3209 3210
		if (!test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status) &&
		    sta && iwl_mvm_has_new_rx_api(mvm) &&
		    key->flags & IEEE80211_KEY_FLAG_PAIRWISE &&
		    (key->cipher == WLAN_CIPHER_SUITE_CCMP ||
3211 3212
		     key->cipher == WLAN_CIPHER_SUITE_GCMP ||
		     key->cipher == WLAN_CIPHER_SUITE_GCMP_256)) {
3213 3214 3215 3216 3217
			struct ieee80211_key_seq seq;
			int tid, q;

			mvmsta = iwl_mvm_sta_from_mac80211(sta);
			WARN_ON(rcu_access_pointer(mvmsta->ptk_pn[keyidx]));
3218 3219
			ptk_pn = kzalloc(struct_size(ptk_pn, q,
						     mvm->trans->num_rx_queues),
3220 3221 3222 3223 3224 3225 3226 3227 3228 3229 3230 3231 3232 3233 3234 3235 3236
					 GFP_KERNEL);
			if (!ptk_pn) {
				ret = -ENOMEM;
				break;
			}

			for (tid = 0; tid < IWL_MAX_TID_COUNT; tid++) {
				ieee80211_get_key_rx_seq(key, tid, &seq);
				for (q = 0; q < mvm->trans->num_rx_queues; q++)
					memcpy(ptk_pn->q[q].pn[tid],
					       seq.ccmp.pn,
					       IEEE80211_CCMP_PN_LEN);
			}

			rcu_assign_pointer(mvmsta->ptk_pn[keyidx], ptk_pn);
		}

3237 3238 3239 3240 3241 3242
		/* in HW restart reuse the index, otherwise request a new one */
		if (test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status))
			key_offset = key->hw_key_idx;
		else
			key_offset = STA_KEY_IDX_INVALID;

J
Johannes Berg 已提交
3243
		IWL_DEBUG_MAC80211(mvm, "set hwcrypto key\n");
3244
		ret = iwl_mvm_set_sta_key(mvm, vif, sta, key, key_offset);
J
Johannes Berg 已提交
3245 3246 3247 3248 3249 3250
		if (ret) {
			IWL_WARN(mvm, "set key failed\n");
			/*
			 * can't add key for RX, but we don't need it
			 * in the device for TX so still return 0
			 */
3251
			key->hw_key_idx = STA_KEY_IDX_INVALID;
J
Johannes Berg 已提交
3252 3253 3254 3255 3256
			ret = 0;
		}

		break;
	case DISABLE_KEY:
3257 3258 3259 3260 3261
		if (key->hw_key_idx == STA_KEY_IDX_INVALID) {
			ret = 0;
			break;
		}

3262 3263 3264
		if (sta && iwl_mvm_has_new_rx_api(mvm) &&
		    key->flags & IEEE80211_KEY_FLAG_PAIRWISE &&
		    (key->cipher == WLAN_CIPHER_SUITE_CCMP ||
3265 3266
		     key->cipher == WLAN_CIPHER_SUITE_GCMP ||
		     key->cipher == WLAN_CIPHER_SUITE_GCMP_256)) {
3267 3268 3269 3270 3271 3272 3273 3274 3275
			mvmsta = iwl_mvm_sta_from_mac80211(sta);
			ptk_pn = rcu_dereference_protected(
						mvmsta->ptk_pn[keyidx],
						lockdep_is_held(&mvm->mutex));
			RCU_INIT_POINTER(mvmsta->ptk_pn[keyidx], NULL);
			if (ptk_pn)
				kfree_rcu(ptk_pn, rcu_head);
		}

J
Johannes Berg 已提交
3276 3277 3278 3279 3280 3281 3282 3283 3284 3285 3286 3287 3288 3289 3290 3291 3292 3293 3294
		IWL_DEBUG_MAC80211(mvm, "disable hwcrypto key\n");
		ret = iwl_mvm_remove_sta_key(mvm, vif, sta, key);
		break;
	default:
		ret = -EINVAL;
	}

	mutex_unlock(&mvm->mutex);
	return ret;
}

static void iwl_mvm_mac_update_tkip_key(struct ieee80211_hw *hw,
					struct ieee80211_vif *vif,
					struct ieee80211_key_conf *keyconf,
					struct ieee80211_sta *sta,
					u32 iv32, u16 *phase1key)
{
	struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);

J
Johannes Berg 已提交
3295 3296 3297
	if (keyconf->hw_key_idx == STA_KEY_IDX_INVALID)
		return;

J
Johannes Berg 已提交
3298 3299 3300 3301
	iwl_mvm_update_tkip_key(mvm, vif, keyconf, sta, iv32, phase1key);
}


3302 3303 3304 3305 3306 3307 3308 3309 3310 3311 3312 3313 3314 3315 3316 3317 3318 3319 3320 3321 3322 3323 3324 3325 3326 3327 3328 3329 3330 3331 3332 3333 3334 3335
static bool iwl_mvm_rx_aux_roc(struct iwl_notif_wait_data *notif_wait,
			       struct iwl_rx_packet *pkt, void *data)
{
	struct iwl_mvm *mvm =
		container_of(notif_wait, struct iwl_mvm, notif_wait);
	struct iwl_hs20_roc_res *resp;
	int resp_len = iwl_rx_packet_payload_len(pkt);
	struct iwl_mvm_time_event_data *te_data = data;

	if (WARN_ON(pkt->hdr.cmd != HOT_SPOT_CMD))
		return true;

	if (WARN_ON_ONCE(resp_len != sizeof(*resp))) {
		IWL_ERR(mvm, "Invalid HOT_SPOT_CMD response\n");
		return true;
	}

	resp = (void *)pkt->data;

	IWL_DEBUG_TE(mvm,
		     "Aux ROC: Recieved response from ucode: status=%d uid=%d\n",
		     resp->status, resp->event_unique_id);

	te_data->uid = le32_to_cpu(resp->event_unique_id);
	IWL_DEBUG_TE(mvm, "TIME_EVENT_CMD response - UID = 0x%x\n",
		     te_data->uid);

	spin_lock_bh(&mvm->time_event_lock);
	list_add_tail(&te_data->list, &mvm->aux_roc_te_list);
	spin_unlock_bh(&mvm->time_event_lock);

	return true;
}

3336 3337 3338 3339 3340
#define AUX_ROC_MIN_DURATION MSEC_TO_TU(100)
#define AUX_ROC_MIN_DELAY MSEC_TO_TU(200)
#define AUX_ROC_MAX_DELAY MSEC_TO_TU(600)
#define AUX_ROC_SAFETY_BUFFER MSEC_TO_TU(20)
#define AUX_ROC_MIN_SAFETY_BUFFER MSEC_TO_TU(10)
3341 3342 3343 3344 3345 3346 3347 3348
static int iwl_mvm_send_aux_roc_cmd(struct iwl_mvm *mvm,
				    struct ieee80211_channel *channel,
				    struct ieee80211_vif *vif,
				    int duration)
{
	int res, time_reg = DEVICE_SYSTEM_TIME_REG;
	struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
	struct iwl_mvm_time_event_data *te_data = &mvmvif->hs_time_event_data;
3349
	static const u16 time_event_response[] = { HOT_SPOT_CMD };
3350
	struct iwl_notification_wait wait_time_event;
3351 3352 3353
	u32 dtim_interval = vif->bss_conf.dtim_period *
		vif->bss_conf.beacon_int;
	u32 req_dur, delay;
3354 3355 3356 3357 3358 3359
	struct iwl_hs20_roc_req aux_roc_req = {
		.action = cpu_to_le32(FW_CTXT_ACTION_ADD),
		.id_and_color =
			cpu_to_le32(FW_CMD_ID_AND_COLOR(MAC_INDEX_AUX, 0)),
		.sta_id_and_color = cpu_to_le32(mvm->aux_sta.sta_id),
		/* Set the channel info data */
3360
		.channel_info.band = (channel->band == NL80211_BAND_2GHZ) ?
3361 3362 3363 3364 3365 3366 3367
			PHY_BAND_24 : PHY_BAND_5,
		.channel_info.channel = channel->hw_value,
		.channel_info.width = PHY_VHT_CHANNEL_MODE20,
		/* Set the time and duration */
		.apply_time = cpu_to_le32(iwl_read_prph(mvm->trans, time_reg)),
	 };

3368 3369 3370 3371 3372 3373 3374 3375 3376 3377 3378 3379 3380 3381 3382 3383 3384 3385 3386 3387 3388 3389 3390 3391 3392 3393 3394 3395 3396 3397
	delay = AUX_ROC_MIN_DELAY;
	req_dur = MSEC_TO_TU(duration);

	/*
	 * If we are associated we want the delay time to be at least one
	 * dtim interval so that the FW can wait until after the DTIM and
	 * then start the time event, this will potentially allow us to
	 * remain off-channel for the max duration.
	 * Since we want to use almost a whole dtim interval we would also
	 * like the delay to be for 2-3 dtim intervals, in case there are
	 * other time events with higher priority.
	 */
	if (vif->bss_conf.assoc) {
		delay = min_t(u32, dtim_interval * 3, AUX_ROC_MAX_DELAY);
		/* We cannot remain off-channel longer than the DTIM interval */
		if (dtim_interval <= req_dur) {
			req_dur = dtim_interval - AUX_ROC_SAFETY_BUFFER;
			if (req_dur <= AUX_ROC_MIN_DURATION)
				req_dur = dtim_interval -
					AUX_ROC_MIN_SAFETY_BUFFER;
		}
	}

	aux_roc_req.duration = cpu_to_le32(req_dur);
	aux_roc_req.apply_time_max_delay = cpu_to_le32(delay);

	IWL_DEBUG_TE(mvm,
		     "ROC: Requesting to remain on channel %u for %ums (requested = %ums, max_delay = %ums, dtim_interval = %ums)\n",
		     channel->hw_value, req_dur, duration, delay,
		     dtim_interval);
3398 3399 3400
	/* Set the node address */
	memcpy(aux_roc_req.node_addr, vif->addr, ETH_ALEN);

3401 3402 3403 3404 3405 3406 3407 3408 3409
	lockdep_assert_held(&mvm->mutex);

	spin_lock_bh(&mvm->time_event_lock);

	if (WARN_ON(te_data->id == HOT_SPOT_CMD)) {
		spin_unlock_bh(&mvm->time_event_lock);
		return -EIO;
	}

3410 3411 3412 3413 3414 3415 3416 3417 3418 3419 3420 3421 3422 3423 3424 3425 3426 3427 3428 3429 3430 3431 3432 3433 3434 3435 3436 3437 3438 3439 3440 3441 3442 3443 3444 3445 3446 3447 3448 3449 3450 3451 3452 3453
	te_data->vif = vif;
	te_data->duration = duration;
	te_data->id = HOT_SPOT_CMD;

	spin_unlock_bh(&mvm->time_event_lock);

	/*
	 * Use a notification wait, which really just processes the
	 * command response and doesn't wait for anything, in order
	 * to be able to process the response and get the UID inside
	 * the RX path. Using CMD_WANT_SKB doesn't work because it
	 * stores the buffer and then wakes up this thread, by which
	 * time another notification (that the time event started)
	 * might already be processed unsuccessfully.
	 */
	iwl_init_notification_wait(&mvm->notif_wait, &wait_time_event,
				   time_event_response,
				   ARRAY_SIZE(time_event_response),
				   iwl_mvm_rx_aux_roc, te_data);

	res = iwl_mvm_send_cmd_pdu(mvm, HOT_SPOT_CMD, 0, sizeof(aux_roc_req),
				   &aux_roc_req);

	if (res) {
		IWL_ERR(mvm, "Couldn't send HOT_SPOT_CMD: %d\n", res);
		iwl_remove_notification(&mvm->notif_wait, &wait_time_event);
		goto out_clear_te;
	}

	/* No need to wait for anything, so just pass 1 (0 isn't valid) */
	res = iwl_wait_notification(&mvm->notif_wait, &wait_time_event, 1);
	/* should never fail */
	WARN_ON_ONCE(res);

	if (res) {
 out_clear_te:
		spin_lock_bh(&mvm->time_event_lock);
		iwl_mvm_te_clear_data(mvm, te_data);
		spin_unlock_bh(&mvm->time_event_lock);
	}

	return res;
}

J
Johannes Berg 已提交
3454 3455 3456
static int iwl_mvm_roc(struct ieee80211_hw *hw,
		       struct ieee80211_vif *vif,
		       struct ieee80211_channel *channel,
3457 3458
		       int duration,
		       enum ieee80211_roc_type type)
J
Johannes Berg 已提交
3459 3460
{
	struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3461
	struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
J
Johannes Berg 已提交
3462
	struct cfg80211_chan_def chandef;
3463 3464 3465 3466 3467
	struct iwl_mvm_phy_ctxt *phy_ctxt;
	int ret, i;

	IWL_DEBUG_MAC80211(mvm, "enter (%d, %d, %d)\n", channel->hw_value,
			   duration, type);
J
Johannes Berg 已提交
3468

3469 3470 3471 3472
	/*
	 * Flush the done work, just in case it's still pending, so that
	 * the work it does can complete and we can accept new frames.
	 */
3473 3474
	flush_work(&mvm->roc_done_wk);

3475 3476
	mutex_lock(&mvm->mutex);

3477 3478
	switch (vif->type) {
	case NL80211_IFTYPE_STATION:
3479 3480
		if (fw_has_capa(&mvm->fw->ucode_capa,
				IWL_UCODE_TLV_CAPA_HOTSPOT_SUPPORT)) {
3481 3482 3483 3484 3485 3486 3487
			/* Use aux roc framework (HS20) */
			ret = iwl_mvm_send_aux_roc_cmd(mvm, channel,
						       vif, duration);
			goto out_unlock;
		}
		IWL_ERR(mvm, "hotspot not supported\n");
		ret = -EINVAL;
3488
		goto out_unlock;
3489 3490 3491 3492 3493
	case NL80211_IFTYPE_P2P_DEVICE:
		/* handle below */
		break;
	default:
		IWL_ERR(mvm, "vif isn't P2P_DEVICE: %d\n", vif->type);
3494 3495
		ret = -EINVAL;
		goto out_unlock;
J
Johannes Berg 已提交
3496 3497
	}

3498 3499 3500 3501 3502 3503 3504 3505 3506 3507 3508 3509 3510 3511 3512 3513 3514 3515 3516 3517 3518 3519 3520 3521 3522 3523 3524 3525 3526 3527 3528 3529
	for (i = 0; i < NUM_PHY_CTX; i++) {
		phy_ctxt = &mvm->phy_ctxts[i];
		if (phy_ctxt->ref == 0 || mvmvif->phy_ctxt == phy_ctxt)
			continue;

		if (phy_ctxt->ref && channel == phy_ctxt->channel) {
			/*
			 * Unbind the P2P_DEVICE from the current PHY context,
			 * and if the PHY context is not used remove it.
			 */
			ret = iwl_mvm_binding_remove_vif(mvm, vif);
			if (WARN(ret, "Failed unbinding P2P_DEVICE\n"))
				goto out_unlock;

			iwl_mvm_phy_ctxt_unref(mvm, mvmvif->phy_ctxt);

			/* Bind the P2P_DEVICE to the current PHY Context */
			mvmvif->phy_ctxt = phy_ctxt;

			ret = iwl_mvm_binding_add_vif(mvm, vif);
			if (WARN(ret, "Failed binding P2P_DEVICE\n"))
				goto out_unlock;

			iwl_mvm_phy_ctxt_ref(mvm, mvmvif->phy_ctxt);
			goto schedule_time_event;
		}
	}

	/* Need to update the PHY context only if the ROC channel changed */
	if (channel == mvmvif->phy_ctxt->channel)
		goto schedule_time_event;

J
Johannes Berg 已提交
3530 3531
	cfg80211_chandef_create(&chandef, channel, NL80211_CHAN_NO_HT);

3532 3533 3534 3535 3536 3537 3538 3539 3540 3541 3542 3543 3544 3545 3546 3547 3548 3549 3550 3551 3552 3553 3554 3555 3556 3557 3558 3559 3560 3561 3562 3563 3564 3565 3566 3567 3568 3569 3570 3571 3572 3573 3574 3575 3576 3577
	/*
	 * Change the PHY context configuration as it is currently referenced
	 * only by the P2P Device MAC
	 */
	if (mvmvif->phy_ctxt->ref == 1) {
		ret = iwl_mvm_phy_ctxt_changed(mvm, mvmvif->phy_ctxt,
					       &chandef, 1, 1);
		if (ret)
			goto out_unlock;
	} else {
		/*
		 * The PHY context is shared with other MACs. Need to remove the
		 * P2P Device from the binding, allocate an new PHY context and
		 * create a new binding
		 */
		phy_ctxt = iwl_mvm_get_free_phy_ctxt(mvm);
		if (!phy_ctxt) {
			ret = -ENOSPC;
			goto out_unlock;
		}

		ret = iwl_mvm_phy_ctxt_changed(mvm, phy_ctxt, &chandef,
					       1, 1);
		if (ret) {
			IWL_ERR(mvm, "Failed to change PHY context\n");
			goto out_unlock;
		}

		/* Unbind the P2P_DEVICE from the current PHY context */
		ret = iwl_mvm_binding_remove_vif(mvm, vif);
		if (WARN(ret, "Failed unbinding P2P_DEVICE\n"))
			goto out_unlock;

		iwl_mvm_phy_ctxt_unref(mvm, mvmvif->phy_ctxt);

		/* Bind the P2P_DEVICE to the new allocated PHY context */
		mvmvif->phy_ctxt = phy_ctxt;

		ret = iwl_mvm_binding_add_vif(mvm, vif);
		if (WARN(ret, "Failed binding P2P_DEVICE\n"))
			goto out_unlock;

		iwl_mvm_phy_ctxt_ref(mvm, mvmvif->phy_ctxt);
	}

schedule_time_event:
J
Johannes Berg 已提交
3578
	/* Schedule the time events */
3579
	ret = iwl_mvm_start_p2p_roc(mvm, vif, duration, type);
J
Johannes Berg 已提交
3580

3581
out_unlock:
J
Johannes Berg 已提交
3582 3583 3584 3585 3586 3587 3588 3589 3590 3591 3592 3593
	mutex_unlock(&mvm->mutex);
	IWL_DEBUG_MAC80211(mvm, "leave\n");
	return ret;
}

static int iwl_mvm_cancel_roc(struct ieee80211_hw *hw)
{
	struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);

	IWL_DEBUG_MAC80211(mvm, "enter\n");

	mutex_lock(&mvm->mutex);
3594
	iwl_mvm_stop_roc(mvm);
J
Johannes Berg 已提交
3595 3596 3597 3598 3599 3600
	mutex_unlock(&mvm->mutex);

	IWL_DEBUG_MAC80211(mvm, "leave\n");
	return 0;
}

3601 3602
static int __iwl_mvm_add_chanctx(struct iwl_mvm *mvm,
				 struct ieee80211_chanctx_conf *ctx)
J
Johannes Berg 已提交
3603
{
3604 3605
	u16 *phy_ctxt_id = (u16 *)ctx->drv_priv;
	struct iwl_mvm_phy_ctxt *phy_ctxt;
J
Johannes Berg 已提交
3606 3607
	int ret;

3608 3609
	lockdep_assert_held(&mvm->mutex);

3610
	IWL_DEBUG_MAC80211(mvm, "Add channel context\n");
3611 3612 3613 3614 3615 3616

	phy_ctxt = iwl_mvm_get_free_phy_ctxt(mvm);
	if (!phy_ctxt) {
		ret = -ENOSPC;
		goto out;
	}
J
Johannes Berg 已提交
3617

3618
	ret = iwl_mvm_phy_ctxt_changed(mvm, phy_ctxt, &ctx->min_def,
3619 3620
				       ctx->rx_chains_static,
				       ctx->rx_chains_dynamic);
3621 3622 3623 3624 3625
	if (ret) {
		IWL_ERR(mvm, "Failed to add PHY context\n");
		goto out;
	}

3626
	iwl_mvm_phy_ctxt_ref(mvm, phy_ctxt);
3627 3628
	*phy_ctxt_id = phy_ctxt->id;
out:
3629 3630 3631 3632 3633 3634 3635 3636 3637 3638 3639
	return ret;
}

static int iwl_mvm_add_chanctx(struct ieee80211_hw *hw,
			       struct ieee80211_chanctx_conf *ctx)
{
	struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
	int ret;

	mutex_lock(&mvm->mutex);
	ret = __iwl_mvm_add_chanctx(mvm, ctx);
J
Johannes Berg 已提交
3640
	mutex_unlock(&mvm->mutex);
3641

J
Johannes Berg 已提交
3642 3643 3644
	return ret;
}

3645 3646 3647 3648 3649 3650 3651 3652 3653 3654 3655
static void __iwl_mvm_remove_chanctx(struct iwl_mvm *mvm,
				     struct ieee80211_chanctx_conf *ctx)
{
	u16 *phy_ctxt_id = (u16 *)ctx->drv_priv;
	struct iwl_mvm_phy_ctxt *phy_ctxt = &mvm->phy_ctxts[*phy_ctxt_id];

	lockdep_assert_held(&mvm->mutex);

	iwl_mvm_phy_ctxt_unref(mvm, phy_ctxt);
}

J
Johannes Berg 已提交
3656 3657 3658 3659 3660 3661
static void iwl_mvm_remove_chanctx(struct ieee80211_hw *hw,
				   struct ieee80211_chanctx_conf *ctx)
{
	struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);

	mutex_lock(&mvm->mutex);
3662
	__iwl_mvm_remove_chanctx(mvm, ctx);
J
Johannes Berg 已提交
3663 3664 3665 3666 3667 3668 3669 3670
	mutex_unlock(&mvm->mutex);
}

static void iwl_mvm_change_chanctx(struct ieee80211_hw *hw,
				   struct ieee80211_chanctx_conf *ctx,
				   u32 changed)
{
	struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3671 3672
	u16 *phy_ctxt_id = (u16 *)ctx->drv_priv;
	struct iwl_mvm_phy_ctxt *phy_ctxt = &mvm->phy_ctxts[*phy_ctxt_id];
J
Johannes Berg 已提交
3673

3674 3675 3676
	if (WARN_ONCE((phy_ctxt->ref > 1) &&
		      (changed & ~(IEEE80211_CHANCTX_CHANGE_WIDTH |
				   IEEE80211_CHANCTX_CHANGE_RX_CHAINS |
3677 3678
				   IEEE80211_CHANCTX_CHANGE_RADAR |
				   IEEE80211_CHANCTX_CHANGE_MIN_WIDTH)),
3679 3680 3681 3682
		      "Cannot change PHY. Ref=%d, changed=0x%X\n",
		      phy_ctxt->ref, changed))
		return;

J
Johannes Berg 已提交
3683
	mutex_lock(&mvm->mutex);
3684 3685 3686 3687 3688 3689 3690 3691 3692 3693 3694 3695

	/* we are only changing the min_width, may be a noop */
	if (changed == IEEE80211_CHANCTX_CHANGE_MIN_WIDTH) {
		if (phy_ctxt->width == ctx->min_def.width)
			goto out_unlock;

		/* we are just toggling between 20_NOHT and 20 */
		if (phy_ctxt->width <= NL80211_CHAN_WIDTH_20 &&
		    ctx->min_def.width <= NL80211_CHAN_WIDTH_20)
			goto out_unlock;
	}

3696
	iwl_mvm_bt_coex_vif_change(mvm);
3697
	iwl_mvm_phy_ctxt_changed(mvm, phy_ctxt, &ctx->min_def,
J
Johannes Berg 已提交
3698 3699
				 ctx->rx_chains_static,
				 ctx->rx_chains_dynamic);
3700 3701

out_unlock:
J
Johannes Berg 已提交
3702 3703 3704
	mutex_unlock(&mvm->mutex);
}

3705 3706
static int __iwl_mvm_assign_vif_chanctx(struct iwl_mvm *mvm,
					struct ieee80211_vif *vif,
3707 3708
					struct ieee80211_chanctx_conf *ctx,
					bool switching_chanctx)
J
Johannes Berg 已提交
3709
{
3710 3711
	u16 *phy_ctxt_id = (u16 *)ctx->drv_priv;
	struct iwl_mvm_phy_ctxt *phy_ctxt = &mvm->phy_ctxts[*phy_ctxt_id];
J
Johannes Berg 已提交
3712 3713 3714
	struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
	int ret;

3715
	lockdep_assert_held(&mvm->mutex);
J
Johannes Berg 已提交
3716

3717
	mvmvif->phy_ctxt = phy_ctxt;
J
Johannes Berg 已提交
3718 3719 3720

	switch (vif->type) {
	case NL80211_IFTYPE_AP:
3721 3722
		/* only needed if we're switching chanctx (i.e. during CSA) */
		if (switching_chanctx) {
3723 3724 3725
			mvmvif->ap_ibss_active = true;
			break;
		}
J
Johannes Berg 已提交
3726
	case NL80211_IFTYPE_ADHOC:
J
Johannes Berg 已提交
3727 3728
		/*
		 * The AP binding flow is handled as part of the start_ap flow
J
Johannes Berg 已提交
3729
		 * (in bss_info_changed), similarly for IBSS.
J
Johannes Berg 已提交
3730 3731
		 */
		ret = 0;
3732
		goto out;
J
Johannes Berg 已提交
3733
	case NL80211_IFTYPE_STATION:
3734
		mvmvif->csa_bcn_pending = false;
3735
		break;
J
Johannes Berg 已提交
3736
	case NL80211_IFTYPE_MONITOR:
3737 3738
		/* always disable PS when a monitor interface is active */
		mvmvif->ps_disabled = true;
J
Johannes Berg 已提交
3739 3740 3741
		break;
	default:
		ret = -EINVAL;
3742
		goto out;
J
Johannes Berg 已提交
3743 3744 3745 3746
	}

	ret = iwl_mvm_binding_add_vif(mvm, vif);
	if (ret)
3747
		goto out;
J
Johannes Berg 已提交
3748 3749

	/*
3750 3751 3752
	 * Power state must be updated before quotas,
	 * otherwise fw will complain.
	 */
3753
	iwl_mvm_power_update_mac(mvm);
3754 3755

	/* Setting the quota at this stage is only required for monitor
J
Johannes Berg 已提交
3756 3757 3758 3759
	 * interfaces. For the other types, the bss_info changed flow
	 * will handle quota settings.
	 */
	if (vif->type == NL80211_IFTYPE_MONITOR) {
3760
		mvmvif->monitor_active = true;
3761
		ret = iwl_mvm_update_quotas(mvm, false, NULL);
J
Johannes Berg 已提交
3762 3763
		if (ret)
			goto out_remove_binding;
3764 3765 3766 3767 3768

		ret = iwl_mvm_add_snif_sta(mvm, vif);
		if (ret)
			goto out_remove_binding;

J
Johannes Berg 已提交
3769 3770
	}

3771
	/* Handle binding during CSA */
3772
	if (vif->type == NL80211_IFTYPE_AP) {
3773
		iwl_mvm_update_quotas(mvm, false, NULL);
3774
		iwl_mvm_mac_ctxt_changed(mvm, vif, false, NULL);
3775 3776
	}

3777
	if (switching_chanctx && vif->type == NL80211_IFTYPE_STATION) {
3778
		u32 duration = 3 * vif->bss_conf.beacon_int;
3779 3780 3781 3782 3783 3784 3785 3786 3787 3788 3789 3790

		/* iwl_mvm_protect_session() reads directly from the
		 * device (the system time), so make sure it is
		 * available.
		 */
		ret = iwl_mvm_ref_sync(mvm, IWL_MVM_REF_PROTECT_CSA);
		if (ret)
			goto out_remove_binding;

		/* Protect the session to make sure we hear the first
		 * beacon on the new channel.
		 */
3791
		mvmvif->csa_bcn_pending = true;
3792 3793 3794 3795 3796 3797
		iwl_mvm_protect_session(mvm, vif, duration, duration,
					vif->bss_conf.beacon_int / 2,
					true);

		iwl_mvm_unref(mvm, IWL_MVM_REF_PROTECT_CSA);

3798
		iwl_mvm_update_quotas(mvm, false, NULL);
3799 3800
	}

3801
	goto out;
J
Johannes Berg 已提交
3802

3803
out_remove_binding:
J
Johannes Berg 已提交
3804
	iwl_mvm_binding_remove_vif(mvm, vif);
3805
	iwl_mvm_power_update_mac(mvm);
3806
out:
J
Johannes Berg 已提交
3807 3808 3809 3810
	if (ret)
		mvmvif->phy_ctxt = NULL;
	return ret;
}
3811 3812 3813
static int iwl_mvm_assign_vif_chanctx(struct ieee80211_hw *hw,
				      struct ieee80211_vif *vif,
				      struct ieee80211_chanctx_conf *ctx)
J
Johannes Berg 已提交
3814 3815
{
	struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3816
	int ret;
J
Johannes Berg 已提交
3817 3818

	mutex_lock(&mvm->mutex);
3819
	ret = __iwl_mvm_assign_vif_chanctx(mvm, vif, ctx, false);
3820 3821 3822 3823 3824 3825 3826
	mutex_unlock(&mvm->mutex);

	return ret;
}

static void __iwl_mvm_unassign_vif_chanctx(struct iwl_mvm *mvm,
					   struct ieee80211_vif *vif,
3827 3828
					   struct ieee80211_chanctx_conf *ctx,
					   bool switching_chanctx)
3829 3830
{
	struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
3831
	struct ieee80211_vif *disabled_vif = NULL;
3832 3833

	lockdep_assert_held(&mvm->mutex);
J
Johannes Berg 已提交
3834 3835 3836 3837

	iwl_mvm_remove_time_event(mvm, mvmvif, &mvmvif->time_event_data);

	switch (vif->type) {
J
Johannes Berg 已提交
3838
	case NL80211_IFTYPE_ADHOC:
3839
		goto out;
J
Johannes Berg 已提交
3840
	case NL80211_IFTYPE_MONITOR:
3841
		mvmvif->monitor_active = false;
3842
		mvmvif->ps_disabled = false;
3843
		iwl_mvm_rm_snif_sta(mvm, vif);
J
Johannes Berg 已提交
3844
		break;
3845 3846
	case NL80211_IFTYPE_AP:
		/* This part is triggered only during CSA */
3847
		if (!switching_chanctx || !mvmvif->ap_ibss_active)
3848
			goto out;
3849

3850 3851
		mvmvif->csa_countdown = false;

3852 3853 3854 3855 3856 3857
		/* Set CS bit on all the stations */
		iwl_mvm_modify_all_sta_disable_tx(mvm, mvmvif, true);

		/* Save blocked iface, the timeout is set on the next beacon */
		rcu_assign_pointer(mvm->csa_tx_blocked_vif, vif);

3858
		mvmvif->ap_ibss_active = false;
3859 3860 3861 3862 3863 3864 3865
		break;
	case NL80211_IFTYPE_STATION:
		if (!switching_chanctx)
			break;

		disabled_vif = vif;

3866
		iwl_mvm_mac_ctxt_changed(mvm, vif, true, NULL);
3867
		break;
J
Johannes Berg 已提交
3868 3869 3870 3871
	default:
		break;
	}

3872
	iwl_mvm_update_quotas(mvm, false, disabled_vif);
3873
	iwl_mvm_binding_remove_vif(mvm, vif);
3874

3875
out:
3876
	mvmvif->phy_ctxt = NULL;
3877
	iwl_mvm_power_update_mac(mvm);
3878 3879 3880 3881 3882 3883 3884 3885 3886
}

static void iwl_mvm_unassign_vif_chanctx(struct ieee80211_hw *hw,
					 struct ieee80211_vif *vif,
					 struct ieee80211_chanctx_conf *ctx)
{
	struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);

	mutex_lock(&mvm->mutex);
3887
	__iwl_mvm_unassign_vif_chanctx(mvm, vif, ctx, false);
J
Johannes Berg 已提交
3888 3889 3890
	mutex_unlock(&mvm->mutex);
}

3891 3892 3893
static int
iwl_mvm_switch_vif_chanctx_swap(struct iwl_mvm *mvm,
				struct ieee80211_vif_chanctx_switch *vifs)
3894 3895 3896 3897
{
	int ret;

	mutex_lock(&mvm->mutex);
3898
	__iwl_mvm_unassign_vif_chanctx(mvm, vifs[0].vif, vifs[0].old_ctx, true);
3899 3900 3901 3902 3903 3904 3905 3906
	__iwl_mvm_remove_chanctx(mvm, vifs[0].old_ctx);

	ret = __iwl_mvm_add_chanctx(mvm, vifs[0].new_ctx);
	if (ret) {
		IWL_ERR(mvm, "failed to add new_ctx during channel switch\n");
		goto out_reassign;
	}

3907 3908
	ret = __iwl_mvm_assign_vif_chanctx(mvm, vifs[0].vif, vifs[0].new_ctx,
					   true);
3909 3910 3911 3912 3913 3914
	if (ret) {
		IWL_ERR(mvm,
			"failed to assign new_ctx during channel switch\n");
		goto out_remove;
	}

3915 3916 3917 3918
	/* we don't support TDLS during DCM - can be caused by channel switch */
	if (iwl_mvm_phy_ctx_count(mvm) > 1)
		iwl_mvm_teardown_tdls_peers(mvm);

3919 3920 3921 3922 3923 3924
	goto out;

out_remove:
	__iwl_mvm_remove_chanctx(mvm, vifs[0].new_ctx);

out_reassign:
3925
	if (__iwl_mvm_add_chanctx(mvm, vifs[0].old_ctx)) {
3926 3927 3928 3929
		IWL_ERR(mvm, "failed to add old_ctx back after failure.\n");
		goto out_restart;
	}

3930 3931
	if (__iwl_mvm_assign_vif_chanctx(mvm, vifs[0].vif, vifs[0].old_ctx,
					 true)) {
3932 3933 3934 3935 3936 3937 3938 3939 3940 3941 3942 3943
		IWL_ERR(mvm, "failed to reassign old_ctx after failure.\n");
		goto out_restart;
	}

	goto out;

out_restart:
	/* things keep failing, better restart the hw */
	iwl_mvm_nic_restart(mvm, false);

out:
	mutex_unlock(&mvm->mutex);
3944 3945 3946 3947

	return ret;
}

3948 3949 3950 3951 3952 3953 3954 3955 3956 3957 3958 3959 3960 3961 3962 3963 3964 3965 3966 3967 3968 3969 3970 3971 3972 3973 3974 3975 3976 3977 3978 3979 3980 3981 3982 3983 3984 3985
static int
iwl_mvm_switch_vif_chanctx_reassign(struct iwl_mvm *mvm,
				    struct ieee80211_vif_chanctx_switch *vifs)
{
	int ret;

	mutex_lock(&mvm->mutex);
	__iwl_mvm_unassign_vif_chanctx(mvm, vifs[0].vif, vifs[0].old_ctx, true);

	ret = __iwl_mvm_assign_vif_chanctx(mvm, vifs[0].vif, vifs[0].new_ctx,
					   true);
	if (ret) {
		IWL_ERR(mvm,
			"failed to assign new_ctx during channel switch\n");
		goto out_reassign;
	}

	goto out;

out_reassign:
	if (__iwl_mvm_assign_vif_chanctx(mvm, vifs[0].vif, vifs[0].old_ctx,
					 true)) {
		IWL_ERR(mvm, "failed to reassign old_ctx after failure.\n");
		goto out_restart;
	}

	goto out;

out_restart:
	/* things keep failing, better restart the hw */
	iwl_mvm_nic_restart(mvm, false);

out:
	mutex_unlock(&mvm->mutex);

	return ret;
}

3986 3987 3988 3989 3990 3991 3992 3993 3994 3995 3996 3997 3998 3999 4000 4001 4002
static int iwl_mvm_switch_vif_chanctx(struct ieee80211_hw *hw,
				      struct ieee80211_vif_chanctx_switch *vifs,
				      int n_vifs,
				      enum ieee80211_chanctx_switch_mode mode)
{
	struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
	int ret;

	/* we only support a single-vif right now */
	if (n_vifs > 1)
		return -EOPNOTSUPP;

	switch (mode) {
	case CHANCTX_SWMODE_SWAP_CONTEXTS:
		ret = iwl_mvm_switch_vif_chanctx_swap(mvm, vifs);
		break;
	case CHANCTX_SWMODE_REASSIGN_VIF:
4003
		ret = iwl_mvm_switch_vif_chanctx_reassign(mvm, vifs);
4004 4005 4006 4007 4008 4009
		break;
	default:
		ret = -EOPNOTSUPP;
		break;
	}

4010 4011 4012
	return ret;
}

4013 4014 4015 4016 4017 4018 4019
static int iwl_mvm_tx_last_beacon(struct ieee80211_hw *hw)
{
	struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);

	return mvm->ibss_manager;
}

J
Johannes Berg 已提交
4020 4021 4022 4023 4024
static int iwl_mvm_set_tim(struct ieee80211_hw *hw,
			   struct ieee80211_sta *sta,
			   bool set)
{
	struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
4025
	struct iwl_mvm_sta *mvm_sta = iwl_mvm_sta_from_mac80211(sta);
J
Johannes Berg 已提交
4026 4027 4028 4029 4030 4031 4032 4033 4034

	if (!mvm_sta || !mvm_sta->vif) {
		IWL_ERR(mvm, "Station is not associated to a vif\n");
		return -EINVAL;
	}

	return iwl_mvm_mac_ctxt_beacon_changed(mvm, mvm_sta->vif);
}

4035 4036 4037 4038
#ifdef CONFIG_NL80211_TESTMODE
static const struct nla_policy iwl_mvm_tm_policy[IWL_MVM_TM_ATTR_MAX + 1] = {
	[IWL_MVM_TM_ATTR_CMD] = { .type = NLA_U32 },
	[IWL_MVM_TM_ATTR_NOA_DURATION] = { .type = NLA_U32 },
4039
	[IWL_MVM_TM_ATTR_BEACON_FILTER_STATE] = { .type = NLA_U32 },
4040 4041 4042 4043 4044 4045 4046 4047 4048 4049
};

static int __iwl_mvm_mac_testmode_cmd(struct iwl_mvm *mvm,
				      struct ieee80211_vif *vif,
				      void *data, int len)
{
	struct nlattr *tb[IWL_MVM_TM_ATTR_MAX + 1];
	int err;
	u32 noa_duration;

4050 4051
	err = nla_parse(tb, IWL_MVM_TM_ATTR_MAX, data, len, iwl_mvm_tm_policy,
			NULL);
4052 4053 4054 4055 4056 4057 4058 4059 4060 4061 4062 4063 4064 4065 4066 4067 4068 4069 4070 4071
	if (err)
		return err;

	if (!tb[IWL_MVM_TM_ATTR_CMD])
		return -EINVAL;

	switch (nla_get_u32(tb[IWL_MVM_TM_ATTR_CMD])) {
	case IWL_MVM_TM_CMD_SET_NOA:
		if (!vif || vif->type != NL80211_IFTYPE_AP || !vif->p2p ||
		    !vif->bss_conf.enable_beacon ||
		    !tb[IWL_MVM_TM_ATTR_NOA_DURATION])
			return -EINVAL;

		noa_duration = nla_get_u32(tb[IWL_MVM_TM_ATTR_NOA_DURATION]);
		if (noa_duration >= vif->bss_conf.beacon_int)
			return -EINVAL;

		mvm->noa_duration = noa_duration;
		mvm->noa_vif = vif;

4072
		return iwl_mvm_update_quotas(mvm, true, NULL);
4073 4074 4075 4076 4077 4078 4079 4080
	case IWL_MVM_TM_CMD_SET_BEACON_FILTER:
		/* must be associated client vif - ignore authorized */
		if (!vif || vif->type != NL80211_IFTYPE_STATION ||
		    !vif->bss_conf.assoc || !vif->bss_conf.dtim_period ||
		    !tb[IWL_MVM_TM_ATTR_BEACON_FILTER_STATE])
			return -EINVAL;

		if (nla_get_u32(tb[IWL_MVM_TM_ATTR_BEACON_FILTER_STATE]))
E
Emmanuel Grumbach 已提交
4081 4082
			return iwl_mvm_enable_beacon_filter(mvm, vif, 0);
		return iwl_mvm_disable_beacon_filter(mvm, vif, 0);
4083 4084 4085 4086 4087 4088 4089 4090 4091 4092 4093 4094 4095 4096 4097 4098 4099 4100 4101 4102
	}

	return -EOPNOTSUPP;
}

static int iwl_mvm_mac_testmode_cmd(struct ieee80211_hw *hw,
				    struct ieee80211_vif *vif,
				    void *data, int len)
{
	struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
	int err;

	mutex_lock(&mvm->mutex);
	err = __iwl_mvm_mac_testmode_cmd(mvm, vif, data, len);
	mutex_unlock(&mvm->mutex);

	return err;
}
#endif

4103 4104 4105 4106 4107 4108 4109 4110 4111 4112 4113 4114 4115 4116
static void iwl_mvm_channel_switch(struct ieee80211_hw *hw,
				   struct ieee80211_vif *vif,
				   struct ieee80211_channel_switch *chsw)
{
	/* By implementing this operation, we prevent mac80211 from
	 * starting its own channel switch timer, so that we can call
	 * ieee80211_chswitch_done() ourselves at the right time
	 * (which is when the absence time event starts).
	 */

	IWL_DEBUG_MAC80211(IWL_MAC80211_GET_MVM(hw),
			   "dummy channel switch op\n");
}

4117 4118 4119
static int iwl_mvm_pre_channel_switch(struct ieee80211_hw *hw,
				      struct ieee80211_vif *vif,
				      struct ieee80211_channel_switch *chsw)
4120 4121
{
	struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
4122
	struct ieee80211_vif *csa_vif;
4123
	struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
4124
	u32 apply_time;
4125
	int ret;
4126 4127

	mutex_lock(&mvm->mutex);
4128

4129 4130
	mvmvif->csa_failed = false;

4131
	IWL_DEBUG_MAC80211(mvm, "pre CSA to freq %d\n",
4132
			   chsw->chandef.center_freq1);
4133

4134 4135 4136
	iwl_fw_dbg_trigger_simple_stop(&mvm->fwrt,
				       ieee80211_vif_to_wdev(vif),
				       FW_DBG_TRIGGER_CHANNEL_SWITCH);
4137

4138 4139 4140 4141 4142 4143 4144 4145 4146 4147 4148
	switch (vif->type) {
	case NL80211_IFTYPE_AP:
		csa_vif =
			rcu_dereference_protected(mvm->csa_vif,
						  lockdep_is_held(&mvm->mutex));
		if (WARN_ONCE(csa_vif && csa_vif->csa_active,
			      "Another CSA is already in progress")) {
			ret = -EBUSY;
			goto out_unlock;
		}

4149 4150 4151 4152 4153 4154 4155
		/* we still didn't unblock tx. prevent new CS meanwhile */
		if (rcu_dereference_protected(mvm->csa_tx_blocked_vif,
					      lockdep_is_held(&mvm->mutex))) {
			ret = -EBUSY;
			goto out_unlock;
		}

4156
		rcu_assign_pointer(mvm->csa_vif, vif);
4157 4158 4159 4160 4161 4162 4163

		if (WARN_ONCE(mvmvif->csa_countdown,
			      "Previous CSA countdown didn't complete")) {
			ret = -EBUSY;
			goto out_unlock;
		}

4164 4165
		mvmvif->csa_target_freq = chsw->chandef.chan->center_freq;

4166
		break;
4167
	case NL80211_IFTYPE_STATION:
4168 4169
		/* Schedule the time event to a bit before beacon 1,
		 * to make sure we're in the new channel when the
4170 4171 4172
		 * GO/AP arrives. In case count <= 1 immediately schedule the
		 * TE (this might result with some packet loss or connection
		 * loss).
4173
		 */
4174 4175 4176 4177 4178 4179
		if (chsw->count <= 1)
			apply_time = 0;
		else
			apply_time = chsw->device_timestamp +
				((vif->bss_conf.beacon_int * (chsw->count - 1) -
				  IWL_MVM_CHANNEL_SWITCH_TIME_CLIENT) * 1024);
4180 4181 4182 4183

		if (chsw->block_tx)
			iwl_mvm_csa_client_absent(mvm, vif);

4184
		iwl_mvm_schedule_csa_period(mvm, vif, vif->bss_conf.beacon_int,
4185
					    apply_time);
4186 4187 4188 4189 4190 4191
		if (mvmvif->bf_data.bf_enabled) {
			ret = iwl_mvm_disable_beacon_filter(mvm, vif, 0);
			if (ret)
				goto out_unlock;
		}

4192
		break;
4193 4194 4195
	default:
		break;
	}
4196

4197 4198 4199 4200 4201
	mvmvif->ps_disabled = true;

	ret = iwl_mvm_power_update_ps(mvm);
	if (ret)
		goto out_unlock;
4202

4203 4204 4205
	/* we won't be on this channel any longer */
	iwl_mvm_teardown_tdls_peers(mvm);

4206 4207
out_unlock:
	mutex_unlock(&mvm->mutex);
4208 4209

	return ret;
4210 4211
}

4212 4213 4214 4215 4216 4217 4218 4219 4220
static int iwl_mvm_post_channel_switch(struct ieee80211_hw *hw,
				       struct ieee80211_vif *vif)
{
	struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
	struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
	int ret;

	mutex_lock(&mvm->mutex);

4221 4222 4223 4224 4225 4226
	if (mvmvif->csa_failed) {
		mvmvif->csa_failed = false;
		ret = -EIO;
		goto out_unlock;
	}

4227 4228 4229
	if (vif->type == NL80211_IFTYPE_STATION) {
		struct iwl_mvm_sta *mvmsta;

4230
		mvmvif->csa_bcn_pending = false;
4231 4232 4233 4234 4235 4236 4237 4238 4239 4240 4241
		mvmsta = iwl_mvm_sta_from_staid_protected(mvm,
							  mvmvif->ap_sta_id);

		if (WARN_ON(!mvmsta)) {
			ret = -EIO;
			goto out_unlock;
		}

		iwl_mvm_sta_modify_disable_tx(mvm, mvmsta, false);

		iwl_mvm_mac_ctxt_changed(mvm, vif, false, NULL);
4242 4243 4244 4245

		ret = iwl_mvm_enable_beacon_filter(mvm, vif, 0);
		if (ret)
			goto out_unlock;
4246 4247

		iwl_mvm_stop_session_protection(mvm, vif);
4248 4249
	}

4250 4251 4252 4253
	mvmvif->ps_disabled = false;

	ret = iwl_mvm_power_update_ps(mvm);

4254
out_unlock:
4255 4256 4257 4258 4259
	mutex_unlock(&mvm->mutex);

	return ret;
}

4260 4261
static void iwl_mvm_flush_no_vif(struct iwl_mvm *mvm, u32 queues, bool drop)
{
4262 4263
	int i;

4264
	if (!iwl_mvm_has_new_tx_api(mvm)) {
4265 4266
		if (drop) {
			mutex_lock(&mvm->mutex);
4267
			iwl_mvm_flush_tx_path(mvm,
4268
				iwl_mvm_flushable_queues(mvm) & queues, 0);
4269 4270
			mutex_unlock(&mvm->mutex);
		} else {
4271
			iwl_trans_wait_tx_queues_empty(mvm->trans, queues);
4272
		}
4273 4274
		return;
	}
4275

4276 4277 4278
	mutex_lock(&mvm->mutex);
	for (i = 0; i < ARRAY_SIZE(mvm->fw_id_to_mac_id); i++) {
		struct ieee80211_sta *sta;
4279

4280 4281 4282 4283
		sta = rcu_dereference_protected(mvm->fw_id_to_mac_id[i],
						lockdep_is_held(&mvm->mutex));
		if (IS_ERR_OR_NULL(sta))
			continue;
4284

4285 4286 4287 4288 4289
		if (drop)
			iwl_mvm_flush_sta_tids(mvm, i, 0xFF, 0);
		else
			iwl_mvm_wait_sta_queues_empty(mvm,
					iwl_mvm_sta_from_mac80211(sta));
4290
	}
4291
	mutex_unlock(&mvm->mutex);
4292 4293
}

4294 4295 4296 4297 4298 4299
static void iwl_mvm_mac_flush(struct ieee80211_hw *hw,
			      struct ieee80211_vif *vif, u32 queues, bool drop)
{
	struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
	struct iwl_mvm_vif *mvmvif;
	struct iwl_mvm_sta *mvmsta;
4300 4301 4302
	struct ieee80211_sta *sta;
	int i;
	u32 msk = 0;
4303

4304 4305 4306 4307 4308 4309
	if (!vif) {
		iwl_mvm_flush_no_vif(mvm, queues, drop);
		return;
	}

	if (vif->type != NL80211_IFTYPE_STATION)
4310 4311
		return;

4312
	/* Make sure we're done with the deferred traffic before flushing */
4313
	flush_work(&mvm->add_stream_wk);
4314

4315 4316 4317
	mutex_lock(&mvm->mutex);
	mvmvif = iwl_mvm_vif_from_mac80211(vif);

4318
	/* flush the AP-station and all TDLS peers */
4319
	for (i = 0; i < ARRAY_SIZE(mvm->fw_id_to_mac_id); i++) {
4320 4321 4322 4323 4324 4325 4326 4327 4328 4329 4330 4331
		sta = rcu_dereference_protected(mvm->fw_id_to_mac_id[i],
						lockdep_is_held(&mvm->mutex));
		if (IS_ERR_OR_NULL(sta))
			continue;

		mvmsta = iwl_mvm_sta_from_mac80211(sta);
		if (mvmsta->vif != vif)
			continue;

		/* make sure only TDLS peers or the AP are flushed */
		WARN_ON(i != mvmvif->ap_sta_id && !sta->tdls);

4332 4333 4334 4335 4336
		if (drop) {
			if (iwl_mvm_flush_sta(mvm, mvmsta, false, 0))
				IWL_ERR(mvm, "flush request fail\n");
		} else {
			msk |= mvmsta->tfd_queue_msk;
4337 4338
			if (iwl_mvm_has_new_tx_api(mvm))
				iwl_mvm_wait_sta_queues_empty(mvm, mvmsta);
4339
		}
4340
	}
4341

4342
	mutex_unlock(&mvm->mutex);
4343

4344 4345 4346
	/* this can take a while, and we may need/want other operations
	 * to succeed while doing this, so do it without the mutex held
	 */
4347
	if (!drop && !iwl_mvm_has_new_tx_api(mvm))
4348
		iwl_trans_wait_tx_queues_empty(mvm->trans, msk);
4349 4350
}

4351 4352 4353 4354 4355 4356 4357 4358 4359 4360 4361 4362
static int iwl_mvm_mac_get_survey(struct ieee80211_hw *hw, int idx,
				  struct survey_info *survey)
{
	struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
	int ret;

	memset(survey, 0, sizeof(*survey));

	/* only support global statistics right now */
	if (idx != 0)
		return -ENOENT;

4363 4364
	if (!fw_has_capa(&mvm->fw->ucode_capa,
			 IWL_UCODE_TLV_CAPA_RADIO_BEACON_STATS))
4365 4366 4367 4368
		return -ENOENT;

	mutex_lock(&mvm->mutex);

4369
	if (iwl_mvm_firmware_running(mvm)) {
4370
		ret = iwl_mvm_request_statistics(mvm, false);
4371 4372 4373 4374 4375 4376 4377 4378 4379 4380 4381 4382 4383 4384 4385 4386 4387 4388 4389 4390 4391 4392 4393 4394
		if (ret)
			goto out;
	}

	survey->filled = SURVEY_INFO_TIME |
			 SURVEY_INFO_TIME_RX |
			 SURVEY_INFO_TIME_TX |
			 SURVEY_INFO_TIME_SCAN;
	survey->time = mvm->accu_radio_stats.on_time_rf +
		       mvm->radio_stats.on_time_rf;
	do_div(survey->time, USEC_PER_MSEC);

	survey->time_rx = mvm->accu_radio_stats.rx_time +
			  mvm->radio_stats.rx_time;
	do_div(survey->time_rx, USEC_PER_MSEC);

	survey->time_tx = mvm->accu_radio_stats.tx_time +
			  mvm->radio_stats.tx_time;
	do_div(survey->time_tx, USEC_PER_MSEC);

	survey->time_scan = mvm->accu_radio_stats.on_time_scan +
			    mvm->radio_stats.on_time_scan;
	do_div(survey->time_scan, USEC_PER_MSEC);

4395
	ret = 0;
4396 4397 4398 4399 4400
 out:
	mutex_unlock(&mvm->mutex);
	return ret;
}

4401 4402 4403 4404 4405 4406 4407 4408 4409
static void iwl_mvm_mac_sta_statistics(struct ieee80211_hw *hw,
				       struct ieee80211_vif *vif,
				       struct ieee80211_sta *sta,
				       struct station_info *sinfo)
{
	struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
	struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
	struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta);

4410 4411
	if (mvmsta->avg_energy) {
		sinfo->signal_avg = mvmsta->avg_energy;
4412
		sinfo->filled |= BIT_ULL(NL80211_STA_INFO_SIGNAL_AVG);
4413 4414
	}

4415 4416
	if (!fw_has_capa(&mvm->fw->ucode_capa,
			 IWL_UCODE_TLV_CAPA_RADIO_BEACON_STATS))
4417 4418 4419 4420 4421 4422 4423 4424 4425 4426 4427 4428 4429 4430 4431 4432 4433 4434 4435
		return;

	/* if beacon filtering isn't on mac80211 does it anyway */
	if (!(vif->driver_flags & IEEE80211_VIF_BEACON_FILTER))
		return;

	if (!vif->bss_conf.assoc)
		return;

	mutex_lock(&mvm->mutex);

	if (mvmvif->ap_sta_id != mvmsta->sta_id)
		goto unlock;

	if (iwl_mvm_request_statistics(mvm, false))
		goto unlock;

	sinfo->rx_beacon = mvmvif->beacon_stats.num_beacons +
			   mvmvif->beacon_stats.accu_num_beacons;
4436
	sinfo->filled |= BIT_ULL(NL80211_STA_INFO_BEACON_RX);
4437 4438 4439
	if (mvmvif->beacon_stats.avg_signal) {
		/* firmware only reports a value after RXing a few beacons */
		sinfo->rx_beacon_signal_avg = mvmvif->beacon_stats.avg_signal;
4440
		sinfo->filled |= BIT_ULL(NL80211_STA_INFO_BEACON_SIGNAL_AVG);
4441 4442 4443 4444 4445
	}
 unlock:
	mutex_unlock(&mvm->mutex);
}

4446 4447 4448
static void iwl_mvm_event_mlme_callback(struct iwl_mvm *mvm,
					struct ieee80211_vif *vif,
					const struct ieee80211_event *event)
4449
{
4450 4451 4452 4453 4454
#define CHECK_MLME_TRIGGER(_cnt, _fmt...)				\
	do {								\
		if ((trig_mlme->_cnt) && --(trig_mlme->_cnt))		\
			break;						\
		iwl_fw_dbg_collect_trig(&(mvm)->fwrt, trig, _fmt);	\
4455 4456 4457 4458 4459 4460 4461 4462 4463 4464
	} while (0)

	struct iwl_fw_dbg_trigger_tlv *trig;
	struct iwl_fw_dbg_trigger_mlme *trig_mlme;

	if (!iwl_fw_dbg_trigger_enabled(mvm->fw, FW_DBG_TRIGGER_MLME))
		return;

	trig = iwl_fw_dbg_get_trigger(mvm->fw, FW_DBG_TRIGGER_MLME);
	trig_mlme = (void *)trig->data;
4465 4466
	if (!iwl_fw_dbg_trigger_check_stop(&mvm->fwrt,
					   ieee80211_vif_to_wdev(vif), trig))
4467 4468 4469 4470
		return;

	if (event->u.mlme.data == ASSOC_EVENT) {
		if (event->u.mlme.status == MLME_DENIED)
4471
			CHECK_MLME_TRIGGER(stop_assoc_denied,
4472 4473 4474
					   "DENIED ASSOC: reason %d",
					    event->u.mlme.reason);
		else if (event->u.mlme.status == MLME_TIMEOUT)
4475
			CHECK_MLME_TRIGGER(stop_assoc_timeout,
4476 4477 4478
					   "ASSOC TIMEOUT");
	} else if (event->u.mlme.data == AUTH_EVENT) {
		if (event->u.mlme.status == MLME_DENIED)
4479
			CHECK_MLME_TRIGGER(stop_auth_denied,
4480 4481 4482
					   "DENIED AUTH: reason %d",
					   event->u.mlme.reason);
		else if (event->u.mlme.status == MLME_TIMEOUT)
4483
			CHECK_MLME_TRIGGER(stop_auth_timeout,
4484 4485
					   "AUTH TIMEOUT");
	} else if (event->u.mlme.data == DEAUTH_RX_EVENT) {
4486
		CHECK_MLME_TRIGGER(stop_rx_deauth,
4487 4488
				   "DEAUTH RX %d", event->u.mlme.reason);
	} else if (event->u.mlme.data == DEAUTH_TX_EVENT) {
4489
		CHECK_MLME_TRIGGER(stop_tx_deauth,
4490 4491 4492 4493 4494
				   "DEAUTH TX %d", event->u.mlme.reason);
	}
#undef CHECK_MLME_TRIGGER
}

4495 4496 4497 4498 4499 4500 4501 4502 4503 4504 4505 4506
static void iwl_mvm_event_bar_rx_callback(struct iwl_mvm *mvm,
					  struct ieee80211_vif *vif,
					  const struct ieee80211_event *event)
{
	struct iwl_fw_dbg_trigger_tlv *trig;
	struct iwl_fw_dbg_trigger_ba *ba_trig;

	if (!iwl_fw_dbg_trigger_enabled(mvm->fw, FW_DBG_TRIGGER_BA))
		return;

	trig = iwl_fw_dbg_get_trigger(mvm->fw, FW_DBG_TRIGGER_BA);
	ba_trig = (void *)trig->data;
4507 4508
	if (!iwl_fw_dbg_trigger_check_stop(&mvm->fwrt,
					   ieee80211_vif_to_wdev(vif), trig))
4509 4510 4511 4512 4513
		return;

	if (!(le16_to_cpu(ba_trig->rx_bar) & BIT(event->u.ba.tid)))
		return;

4514 4515 4516 4517
	iwl_fw_dbg_collect_trig(&mvm->fwrt, trig,
				"BAR received from %pM, tid %d, ssn %d",
				event->u.ba.sta->addr, event->u.ba.tid,
				event->u.ba.ssn);
4518 4519 4520 4521 4522 4523 4524 4525 4526 4527 4528 4529 4530 4531 4532 4533
}

static void iwl_mvm_mac_event_callback(struct ieee80211_hw *hw,
				       struct ieee80211_vif *vif,
				       const struct ieee80211_event *event)
{
	struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);

	switch (event->type) {
	case MLME_EVENT:
		iwl_mvm_event_mlme_callback(mvm, vif, event);
		break;
	case BAR_RX_EVENT:
		iwl_mvm_event_bar_rx_callback(mvm, vif, event);
		break;
	case BA_FRAME_TIMEOUT:
4534 4535
		iwl_mvm_event_frame_timeout_callback(mvm, vif, event->u.ba.sta,
						     event->u.ba.tid);
4536 4537 4538 4539 4540 4541
		break;
	default:
		break;
	}
}

4542 4543 4544
void iwl_mvm_sync_rx_queues_internal(struct iwl_mvm *mvm,
				     struct iwl_mvm_internal_rxq_notif *notif,
				     u32 size)
4545 4546 4547 4548 4549 4550
{
	u32 qmask = BIT(mvm->trans->num_rx_queues) - 1;
	int ret;

	lockdep_assert_held(&mvm->mutex);

4551
	if (!iwl_mvm_has_new_rx_api(mvm))
4552 4553
		return;

4554 4555 4556 4557 4558
	notif->cookie = mvm->queue_sync_cookie;

	if (notif->sync)
		atomic_set(&mvm->queue_sync_counter,
			   mvm->trans->num_rx_queues);
4559

4560
	/* TODO - remove this when we have RXQ config API */
4561
	if (mvm->trans->cfg->device_family == IWL_DEVICE_FAMILY_22000) {
4562 4563 4564 4565 4566
		qmask = BIT(0);
		if (notif->sync)
			atomic_set(&mvm->queue_sync_counter, 1);
	}

4567
	ret = iwl_mvm_notify_rx_queue(mvm, qmask, (u8 *)notif, size);
4568 4569 4570 4571
	if (ret) {
		IWL_ERR(mvm, "Failed to trigger RX queues sync (%d)\n", ret);
		goto out;
	}
4572

4573
	if (notif->sync) {
4574
		ret = wait_event_timeout(mvm->rx_sync_waitq,
4575 4576
					 atomic_read(&mvm->queue_sync_counter) == 0 ||
					 iwl_mvm_is_radio_killed(mvm),
4577
					 HZ);
4578 4579
		WARN_ON_ONCE(!ret && !iwl_mvm_is_radio_killed(mvm));
	}
4580 4581 4582 4583 4584 4585 4586 4587 4588

out:
	atomic_set(&mvm->queue_sync_counter, 0);
	mvm->queue_sync_cookie++;
}

static void iwl_mvm_sync_rx_queues(struct ieee80211_hw *hw)
{
	struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
4589 4590 4591 4592
	struct iwl_mvm_internal_rxq_notif data = {
		.type = IWL_MVM_RXQ_EMPTY,
		.sync = 1,
	};
4593 4594

	mutex_lock(&mvm->mutex);
4595
	iwl_mvm_sync_rx_queues_internal(mvm, &data, sizeof(data));
4596 4597 4598
	mutex_unlock(&mvm->mutex);
}

4599
const struct ieee80211_ops iwl_mvm_hw_ops = {
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4600 4601 4602
	.tx = iwl_mvm_mac_tx,
	.ampdu_action = iwl_mvm_mac_ampdu_action,
	.start = iwl_mvm_mac_start,
4603
	.reconfig_complete = iwl_mvm_mac_reconfig_complete,
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4604 4605 4606 4607
	.stop = iwl_mvm_mac_stop,
	.add_interface = iwl_mvm_mac_add_interface,
	.remove_interface = iwl_mvm_mac_remove_interface,
	.config = iwl_mvm_mac_config,
4608
	.prepare_multicast = iwl_mvm_prepare_multicast,
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4609
	.configure_filter = iwl_mvm_configure_filter,
4610
	.config_iface_filter = iwl_mvm_config_iface_filter,
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4611 4612 4613
	.bss_info_changed = iwl_mvm_bss_info_changed,
	.hw_scan = iwl_mvm_mac_hw_scan,
	.cancel_hw_scan = iwl_mvm_mac_cancel_hw_scan,
4614
	.sta_pre_rcu_remove = iwl_mvm_sta_pre_rcu_remove,
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4615 4616 4617
	.sta_state = iwl_mvm_mac_sta_state,
	.sta_notify = iwl_mvm_mac_sta_notify,
	.allow_buffered_frames = iwl_mvm_mac_allow_buffered_frames,
4618
	.release_buffered_frames = iwl_mvm_mac_release_buffered_frames,
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4619
	.set_rts_threshold = iwl_mvm_mac_set_rts_threshold,
4620
	.sta_rc_update = iwl_mvm_sta_rc_update,
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4621 4622
	.conf_tx = iwl_mvm_mac_conf_tx,
	.mgd_prepare_tx = iwl_mvm_mac_mgd_prepare_tx,
4623
	.mgd_protect_tdls_discover = iwl_mvm_mac_mgd_protect_tdls_discover,
4624
	.flush = iwl_mvm_mac_flush,
4625 4626
	.sched_scan_start = iwl_mvm_mac_sched_scan_start,
	.sched_scan_stop = iwl_mvm_mac_sched_scan_stop,
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4627 4628 4629 4630 4631 4632 4633 4634 4635
	.set_key = iwl_mvm_mac_set_key,
	.update_tkip_key = iwl_mvm_mac_update_tkip_key,
	.remain_on_channel = iwl_mvm_roc,
	.cancel_remain_on_channel = iwl_mvm_cancel_roc,
	.add_chanctx = iwl_mvm_add_chanctx,
	.remove_chanctx = iwl_mvm_remove_chanctx,
	.change_chanctx = iwl_mvm_change_chanctx,
	.assign_vif_chanctx = iwl_mvm_assign_vif_chanctx,
	.unassign_vif_chanctx = iwl_mvm_unassign_vif_chanctx,
4636
	.switch_vif_chanctx = iwl_mvm_switch_vif_chanctx,
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4637

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4638 4639 4640 4641
	.start_ap = iwl_mvm_start_ap_ibss,
	.stop_ap = iwl_mvm_stop_ap_ibss,
	.join_ibss = iwl_mvm_start_ap_ibss,
	.leave_ibss = iwl_mvm_stop_ap_ibss,
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4642

4643 4644
	.tx_last_beacon = iwl_mvm_tx_last_beacon,

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4645 4646
	.set_tim = iwl_mvm_set_tim,

4647
	.channel_switch = iwl_mvm_channel_switch,
4648
	.pre_channel_switch = iwl_mvm_pre_channel_switch,
4649
	.post_channel_switch = iwl_mvm_post_channel_switch,
4650

4651 4652 4653 4654
	.tdls_channel_switch = iwl_mvm_tdls_channel_switch,
	.tdls_cancel_channel_switch = iwl_mvm_tdls_cancel_channel_switch,
	.tdls_recv_channel_switch = iwl_mvm_tdls_recv_channel_switch,

4655 4656
	.event_callback = iwl_mvm_mac_event_callback,

4657 4658
	.sync_rx_queues = iwl_mvm_sync_rx_queues,

4659 4660
	CFG80211_TESTMODE_CMD(iwl_mvm_mac_testmode_cmd)

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4661 4662 4663 4664 4665 4666 4667 4668 4669 4670 4671
#ifdef CONFIG_PM_SLEEP
	/* look at d3.c */
	.suspend = iwl_mvm_suspend,
	.resume = iwl_mvm_resume,
	.set_wakeup = iwl_mvm_set_wakeup,
	.set_rekey_data = iwl_mvm_set_rekey_data,
#if IS_ENABLED(CONFIG_IPV6)
	.ipv6_addr_change = iwl_mvm_ipv6_addr_change,
#endif
	.set_default_unicast_key = iwl_mvm_set_default_unicast_key,
#endif
4672
	.get_survey = iwl_mvm_mac_get_survey,
4673
	.sta_statistics = iwl_mvm_mac_sta_statistics,
4674 4675 4676
#ifdef CONFIG_IWLWIFI_DEBUGFS
	.sta_add_debugfs = iwl_mvm_sta_add_debugfs,
#endif
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4677
};