mac80211.c 119.1 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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 *
 * 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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 * 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_PM_SLEEP
static const struct nl80211_wowlan_tcp_data_token_feature
iwl_mvm_wowlan_tcp_token_feature = {
	.min_len = 0,
	.max_len = 255,
	.bufsize = IWL_WOWLAN_REMOTE_WAKE_MAX_TOKENS,
};

static const struct wiphy_wowlan_tcp_support iwl_mvm_wowlan_tcp_support = {
	.tok = &iwl_mvm_wowlan_tcp_token_feature,
	.data_payload_max = IWL_WOWLAN_TCP_MAX_PACKET_LEN -
			    sizeof(struct ethhdr) -
			    sizeof(struct iphdr) -
			    sizeof(struct tcphdr),
	.data_interval_max = 65535, /* __le16 in API */
	.wake_payload_max = IWL_WOWLAN_REMOTE_WAKE_MAX_PACKET_LEN -
			    sizeof(struct ethhdr) -
			    sizeof(struct iphdr) -
			    sizeof(struct tcphdr),
	.seq = true,
};
#endif

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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,
				      __le16_to_cpu(resp->mcc));
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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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	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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	hw->rate_control_algorithm = "iwl-mvm-rs";
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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);
547
	hw->chanctx_data_size = sizeof(u16);
J
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548 549

	hw->wiphy->interface_modes = BIT(NL80211_IFTYPE_STATION) |
550 551 552
		BIT(NL80211_IFTYPE_P2P_CLIENT) |
		BIT(NL80211_IFTYPE_AP) |
		BIT(NL80211_IFTYPE_P2P_GO) |
553 554
		BIT(NL80211_IFTYPE_P2P_DEVICE) |
		BIT(NL80211_IFTYPE_ADHOC);
J
Johannes Berg 已提交
555

556
	hw->wiphy->flags |= WIPHY_FLAG_IBSS_RSN;
557 558 559 560 561 562
	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;
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Johannes Berg 已提交
563

564
	hw->wiphy->flags |= WIPHY_FLAG_AP_UAPSD;
565
	hw->wiphy->flags |= WIPHY_FLAG_HAS_CHANNEL_SWITCH;
566

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567 568 569 570
	hw->wiphy->iface_combinations = iwl_mvm_iface_combinations;
	hw->wiphy->n_iface_combinations =
		ARRAY_SIZE(iwl_mvm_iface_combinations);

571
	hw->wiphy->max_remain_on_channel_duration = 10000;
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572
	hw->max_listen_interval = IWL_CONN_MAX_LISTEN_INTERVAL;
573 574
	/* we can compensate an offset of up to 3 channels = 15 MHz */
	hw->wiphy->max_adj_channel_rssi_comp = 3 * 5;
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575 576 577 578 579

	/* 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;
580 581 582 583 584 585 586

	/* 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
587
		       ETH_ALEN);
588
		mvm->addresses[i].addr[5]++;
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589 590 591
		hw->wiphy->n_addresses++;
	}

592 593
	iwl_mvm_reset_phy_ctxts(mvm);

594
	hw->wiphy->max_scan_ie_len = iwl_mvm_max_scan_ie_len(mvm);
595

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596 597
	hw->wiphy->max_scan_ssids = PROBE_OPTION_MAX;

598
	BUILD_BUG_ON(IWL_MVM_SCAN_STOPPING_MASK & IWL_MVM_SCAN_MASK);
599 600 601
	BUILD_BUG_ON(IWL_MVM_MAX_UMAC_SCANS > HWEIGHT32(IWL_MVM_SCAN_MASK) ||
		     IWL_MVM_MAX_LMAC_SCANS > HWEIGHT32(IWL_MVM_SCAN_MASK));

602
	if (fw_has_capa(&mvm->fw->ucode_capa, IWL_UCODE_TLV_CAPA_UMAC_SCAN))
603 604 605 606
		mvm->max_scans = IWL_MVM_MAX_UMAC_SCANS;
	else
		mvm->max_scans = IWL_MVM_MAX_LMAC_SCANS;

607 608 609 610 611 612
	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];
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613

614 615 616 617
		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))
618
			hw->wiphy->bands[NL80211_BAND_5GHZ]->vht_cap.cap |=
619 620 621
				IEEE80211_VHT_CAP_SU_BEAMFORMER_CAPABLE;
	}

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622 623
	hw->wiphy->hw_version = mvm->trans->hw_id;

624
	if (iwlmvm_mod_params.power_scheme != IWL_POWER_SCHEME_CAM)
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625 626 627 628
		hw->wiphy->flags |= WIPHY_FLAG_PS_ON_BY_DEFAULT;
	else
		hw->wiphy->flags &= ~WIPHY_FLAG_PS_ON_BY_DEFAULT;

629
	hw->wiphy->max_sched_scan_reqs = 1;
630 631 632 633 634
	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;
635 636 637 638 639 640 641 642
	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;
643

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644
	hw->wiphy->features |= NL80211_FEATURE_P2P_GO_CTWIN |
645
			       NL80211_FEATURE_LOW_PRIORITY_SCAN |
646
			       NL80211_FEATURE_P2P_GO_OPPPS |
647
			       NL80211_FEATURE_AP_MODE_CHAN_WIDTH_CHANGE |
648
			       NL80211_FEATURE_DYNAMIC_SMPS |
649 650
			       NL80211_FEATURE_STATIC_SMPS |
			       NL80211_FEATURE_SUPPORTS_WMM_ADMISSION;
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651

652 653
	if (fw_has_capa(&mvm->fw->ucode_capa,
			IWL_UCODE_TLV_CAPA_TXPOWER_INSERTION_SUPPORT))
654
		hw->wiphy->features |= NL80211_FEATURE_TX_POWER_INSERTION;
655 656
	if (fw_has_capa(&mvm->fw->ucode_capa,
			IWL_UCODE_TLV_CAPA_QUIET_PERIOD_SUPPORT))
657
		hw->wiphy->features |= NL80211_FEATURE_QUIET;
658

659 660
	if (fw_has_capa(&mvm->fw->ucode_capa,
			IWL_UCODE_TLV_CAPA_DS_PARAM_SET_IE_SUPPORT))
661 662 663
		hw->wiphy->features |=
			NL80211_FEATURE_DS_PARAM_SET_IE_IN_PROBES;

664 665
	if (fw_has_capa(&mvm->fw->ucode_capa,
			IWL_UCODE_TLV_CAPA_WFA_TPC_REP_IE_SUPPORT))
666 667
		hw->wiphy->features |= NL80211_FEATURE_WFA_TPC_IE_IN_PROBES;

668 669 670 671 672 673 674 675 676 677
	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);
	}

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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 &&
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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;
705 706
		mvm->wowlan.tcp = &iwl_mvm_wowlan_tcp_support;
		hw->wiphy->wowlan = &mvm->wowlan;
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707 708 709
	}
#endif

710 711 712 713 714
#ifdef CONFIG_IWLWIFI_BCAST_FILTERING
	/* assign default bcast filtering configuration */
	mvm->bcast_filters = iwl_mvm_default_bcast_filters;
#endif

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715 716 717 718
	ret = iwl_mvm_leds_init(mvm);
	if (ret)
		return ret;

719 720
	if (fw_has_capa(&mvm->fw->ucode_capa,
			IWL_UCODE_TLV_CAPA_TDLS_SUPPORT)) {
A
Arik Nemtsov 已提交
721 722
		IWL_DEBUG_TDLS(mvm, "TDLS supported\n");
		hw->wiphy->flags |= WIPHY_FLAG_SUPPORTS_TDLS;
723
		ieee80211_hw_set(hw, TDLS_WIDER_BW);
A
Arik Nemtsov 已提交
724 725
	}

726 727
	if (fw_has_capa(&mvm->fw->ucode_capa,
			IWL_UCODE_TLV_CAPA_TDLS_CHANNEL_SWITCH)) {
728 729 730 731
		IWL_DEBUG_TDLS(mvm, "TDLS channel switch supported\n");
		hw->wiphy->features |= NL80211_FEATURE_TDLS_CHANNEL_SWITCH;
	}

732
	hw->netdev_features |= mvm->cfg->features;
733 734 735 736 737 738 739
	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;
	}
740

741 742 743
	ret = ieee80211_register_hw(mvm->hw);
	if (ret)
		iwl_mvm_leds_exit(mvm);
744
	mvm->init_status |= IWL_MVM_INIT_STATUS_REG_HW_INIT_COMPLETE;
745

746 747 748 749
	if (mvm->cfg->vht_mu_mimo_supported)
		wiphy_ext_feature_set(hw->wiphy,
				      NL80211_EXT_FEATURE_MU_MIMO_AIR_SNIFFER);

750
	return ret;
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751 752
}

753 754 755 756 757 758 759 760 761 762 763 764 765 766 767 768 769 770 771 772 773 774 775 776
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);
777
	if (mvmsta->sta_id == IWL_MVM_INVALID_STA ||
778 779 780 781 782 783 784 785 786 787 788 789 790 791 792 793
	    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;
}

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794 795 796 797 798
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);
799 800 801
	struct ieee80211_sta *sta = control->sta;
	struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
	struct ieee80211_hdr *hdr = (void *)skb->data;
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Johannes Berg 已提交
802

803 804
	if (iwl_mvm_is_radio_killed(mvm)) {
		IWL_DEBUG_DROP(mvm, "Dropping - RF/CT KILL\n");
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Johannes Berg 已提交
805 806 807
		goto drop;
	}

808
	if (info->hw_queue == IWL_MVM_OFFCHANNEL_QUEUE &&
809 810
	    !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
811 812
		goto drop;

813 814 815
	/* treat non-bufferable MMPDUs as broadcast if sta is sleeping */
	if (unlikely(info->flags & IEEE80211_TX_CTL_NO_PS_BUFFER &&
		     ieee80211_is_mgmt(hdr->frame_control) &&
816
		     !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))
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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;
	}
}

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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;
914 915 916 917 918
	struct ieee80211_sta *sta = params->sta;
	enum ieee80211_ampdu_mlme_action action = params->action;
	u16 tid = params->tid;
	u16 *ssn = &params->ssn;
	u8 buf_size = params->buf_size;
919
	bool amsdu = params->amsdu;
920
	u16 timeout = params->timeout;
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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
	}

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

	switch (action) {
	case IEEE80211_AMPDU_RX_START:
957
		if (!iwl_enable_rx_ampdu(mvm->cfg)) {
J
Johannes Berg 已提交
958 959 960
			ret = -EINVAL;
			break;
		}
961 962
		ret = iwl_mvm_sta_rx_agg(mvm, sta, tid, *ssn, true, buf_size,
					 timeout);
J
Johannes Berg 已提交
963 964
		break;
	case IEEE80211_AMPDU_RX_STOP:
965 966
		ret = iwl_mvm_sta_rx_agg(mvm, sta, tid, 0, false, buf_size,
					 timeout);
J
Johannes Berg 已提交
967 968
		break;
	case IEEE80211_AMPDU_TX_START:
969
		if (!iwl_enable_tx_ampdu(mvm->cfg)) {
970 971 972
			ret = -EINVAL;
			break;
		}
J
Johannes Berg 已提交
973 974 975
		ret = iwl_mvm_sta_tx_agg_start(mvm, vif, sta, tid, ssn);
		break;
	case IEEE80211_AMPDU_TX_STOP_CONT:
976 977
		ret = iwl_mvm_sta_tx_agg_stop(mvm, vif, sta, tid);
		break;
J
Johannes Berg 已提交
978 979
	case IEEE80211_AMPDU_TX_STOP_FLUSH:
	case IEEE80211_AMPDU_TX_STOP_FLUSH_CONT:
980
		ret = iwl_mvm_sta_tx_agg_flush(mvm, vif, sta, tid);
J
Johannes Berg 已提交
981 982
		break;
	case IEEE80211_AMPDU_TX_OPERATIONAL:
983 984
		ret = iwl_mvm_sta_tx_agg_oper(mvm, vif, sta, tid,
					      buf_size, amsdu);
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Johannes Berg 已提交
985 986 987 988 989 990
		break;
	default:
		WARN_ON_ONCE(1);
		ret = -EINVAL;
		break;
	}
991 992 993 994 995 996 997 998 999 1000

	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
1001 1002
	mutex_unlock(&mvm->mutex);

1003 1004 1005 1006 1007 1008 1009
	/*
	 * 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
1010 1011 1012 1013 1014 1015 1016 1017 1018 1019
	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;
1020
	mvmvif->ap_sta_id = IWL_MVM_INVALID_STA;
J
Johannes Berg 已提交
1021 1022 1023 1024 1025

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

1026
	mvmvif->phy_ctxt = NULL;
1027
	memset(&mvmvif->bf_data, 0, sizeof(mvmvif->bf_data));
J
Johannes Berg 已提交
1028 1029 1030 1031
}

static void iwl_mvm_restart_cleanup(struct iwl_mvm *mvm)
{
1032 1033 1034 1035
	/* 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
	 */
1036
	if (!test_and_clear_bit(IWL_MVM_STATUS_D3_RECONFIG, &mvm->status)) {
1037 1038
		mvm->fwrt.dump.desc = &iwl_dump_desc_assert;
		iwl_fw_error_dump(&mvm->fwrt);
1039
	}
1040

1041 1042 1043 1044 1045
	/* 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);

1046
	iwl_mvm_stop_device(mvm);
J
Johannes Berg 已提交
1047

1048
	mvm->scan_status = 0;
1049
	mvm->ps_disabled = false;
1050
	mvm->calibrating = false;
J
Johannes Berg 已提交
1051 1052

	/* just in case one was running */
1053
	iwl_mvm_cleanup_roc_te(mvm);
J
Johannes Berg 已提交
1054 1055
	ieee80211_remain_on_channel_expired(mvm->hw);

1056 1057 1058 1059 1060
	/*
	 * 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
1061

1062
	mvm->p2p_device_vif = NULL;
1063
	mvm->d0i3_ap_sta_id = IWL_MVM_INVALID_STA;
1064 1065

	iwl_mvm_reset_phy_ctxts(mvm);
1066
	memset(mvm->fw_key_table, 0, sizeof(mvm->fw_key_table));
1067
	memset(mvm->sta_deferred_frames, 0, sizeof(mvm->sta_deferred_frames));
1068 1069
	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
1070 1071 1072

	ieee80211_wake_queues(mvm->hw);

1073 1074 1075
	/* clear any stale d0i3 state */
	clear_bit(IWL_MVM_STATUS_IN_D0I3, &mvm->status);

J
Johannes Berg 已提交
1076
	mvm->vif_count = 0;
1077
	mvm->rx_ba_sessions = 0;
1078
	mvm->fwrt.dump.conf = FW_DBG_INVALID;
1079 1080 1081

	/* keep statistics ticking */
	iwl_mvm_accu_radio_stats(mvm);
J
Johannes Berg 已提交
1082 1083
}

1084
int __iwl_mvm_mac_start(struct iwl_mvm *mvm)
J
Johannes Berg 已提交
1085 1086 1087
{
	int ret;

1088
	lockdep_assert_held(&mvm->mutex);
J
Johannes Berg 已提交
1089

1090 1091 1092 1093 1094 1095 1096
	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);
1097
		/* Clean up some internal and mac80211 state on restart */
J
Johannes Berg 已提交
1098
		iwl_mvm_restart_cleanup(mvm);
1099 1100 1101 1102 1103 1104 1105 1106 1107
	} 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
1108
	ret = iwl_mvm_up(mvm);
1109 1110 1111 1112 1113 1114 1115 1116 1117 1118

	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);
	}

1119 1120 1121 1122 1123 1124 1125 1126
	return ret;
}

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

1127 1128 1129 1130 1131 1132 1133 1134 1135 1136 1137 1138 1139
	/* 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);
	}

1140 1141
	mutex_lock(&mvm->mutex);
	ret = __iwl_mvm_mac_start(mvm);
J
Johannes Berg 已提交
1142 1143 1144 1145 1146
	mutex_unlock(&mvm->mutex);

	return ret;
}

1147
static void iwl_mvm_restart_complete(struct iwl_mvm *mvm)
J
Johannes Berg 已提交
1148 1149 1150 1151 1152 1153
{
	int ret;

	mutex_lock(&mvm->mutex);

	clear_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status);
1154
	iwl_mvm_d0i3_enable_tx(mvm, NULL);
1155
	ret = iwl_mvm_update_quotas(mvm, true, NULL);
J
Johannes Berg 已提交
1156 1157 1158 1159
	if (ret)
		IWL_ERR(mvm, "Failed to update quotas after restart (%d)\n",
			ret);

1160 1161 1162
	/* allow transport/FW low power modes */
	iwl_mvm_unref(mvm, IWL_MVM_REF_UCODE_DOWN);

1163 1164 1165 1166 1167 1168
	/*
	 * 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
1169 1170 1171
	mutex_unlock(&mvm->mutex);
}

1172 1173
static void iwl_mvm_resume_complete(struct iwl_mvm *mvm)
{
1174 1175 1176 1177 1178 1179 1180
	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");
1181 1182
}

1183 1184 1185 1186 1187 1188 1189 1190 1191 1192 1193
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:
1194
		iwl_mvm_resume_complete(mvm);
1195 1196 1197 1198
		break;
	}
}

1199
void __iwl_mvm_mac_stop(struct iwl_mvm *mvm)
J
Johannes Berg 已提交
1200
{
1201
	lockdep_assert_held(&mvm->mutex);
1202

1203 1204 1205 1206 1207
	/* 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
1208 1209 1210 1211 1212 1213
	/* 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.
	 */
1214
	flush_work(&mvm->roc_done_wk);
J
Johannes Berg 已提交
1215

1216
	iwl_mvm_stop_device(mvm);
J
Johannes Berg 已提交
1217 1218 1219 1220 1221

	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 */
1222
	iwl_mvm_del_aux_sta(mvm);
J
Johannes Berg 已提交
1223

1224 1225 1226
	/*
	 * Clear IN_HW_RESTART flag when stopping the hw (as restart_complete()
	 * won't be called in this case).
1227 1228
	 * But make sure to cleanup interfaces that have gone down before/during
	 * HW restart was requested.
1229
	 */
1230 1231 1232
	if (test_and_clear_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status))
		ieee80211_iterate_interfaces(mvm->hw, 0,
					     iwl_mvm_cleanup_iterator, mvm);
1233

1234 1235 1236
	/* 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.
	 */
1237
	if (fw_has_capa(&mvm->fw->ucode_capa, IWL_UCODE_TLV_CAPA_UMAC_SCAN)) {
1238 1239
		int i;

1240
		for (i = 0; i < mvm->max_scans; i++) {
1241 1242 1243 1244
			if (WARN_ONCE(mvm->scan_uid_status[i],
				      "UMAC scan UID %d status was not cleaned\n",
				      i))
				mvm->scan_uid_status[i] = 0;
1245 1246
		}
	}
1247
}
1248

1249 1250 1251 1252 1253 1254
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);
1255
	flush_work(&mvm->add_stream_wk);
1256 1257 1258 1259 1260

	/*
	 * 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
1261
	 * debugfs files causes the firmware dump to be triggered, and if we
1262 1263 1264 1265 1266
	 * 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);

1267
	iwl_fw_cancel_dump(&mvm->fwrt);
1268
	cancel_delayed_work_sync(&mvm->cs_tx_unblock_dwork);
1269
	cancel_delayed_work_sync(&mvm->scan_timeout_dwork);
1270
	iwl_fw_free_dump_desc(&mvm->fwrt);
1271 1272 1273

	mutex_lock(&mvm->mutex);
	__iwl_mvm_mac_stop(mvm);
J
Johannes Berg 已提交
1274 1275 1276 1277 1278 1279 1280 1281 1282
	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);
}

1283 1284 1285 1286 1287 1288 1289 1290 1291 1292 1293 1294 1295 1296
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;
}

1297 1298 1299 1300
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 = {
1301 1302
		.v3.set_mode = cpu_to_le32(IWL_TX_POWER_MODE_SET_MAC),
		.v3.mac_context_id =
1303
			cpu_to_le32(iwl_mvm_vif_from_mac80211(vif)->id),
1304
		.v3.pwr_restriction = cpu_to_le16(8 * tx_power),
1305
	};
1306
	int len = sizeof(cmd);
1307 1308

	if (tx_power == IWL_DEFAULT_MAX_TX_POWER)
1309
		cmd.v3.pwr_restriction = cpu_to_le16(IWL_DEV_MAX_TX_POWER);
1310

1311 1312
	if (!fw_has_capa(&mvm->fw->ucode_capa, IWL_UCODE_TLV_CAPA_TX_POWER_ACK))
		len = sizeof(cmd.v3);
1313 1314

	return iwl_mvm_send_cmd_pdu(mvm, REDUCE_TX_POWER_CMD, 0, len, &cmd);
1315 1316
}

J
Johannes Berg 已提交
1317 1318 1319 1320 1321 1322 1323
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;

1324 1325
	mvmvif->mvm = mvm;

1326 1327 1328 1329 1330 1331 1332 1333 1334
	/*
	 * 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
1335 1336 1337 1338 1339 1340 1341 1342
	/*
	 * 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);

1343 1344 1345 1346 1347
	/* 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;

1348
	/* Allocate resources for the MAC context, and add it to the fw  */
J
Johannes Berg 已提交
1349 1350 1351 1352
	ret = iwl_mvm_mac_ctxt_init(mvm, vif);
	if (ret)
		goto out_unlock;

1353
	/* Counting number of interfaces is needed for legacy PM */
1354 1355 1356
	if (vif->type != NL80211_IFTYPE_P2P_DEVICE)
		mvm->vif_count++;

J
Johannes Berg 已提交
1357 1358 1359 1360 1361 1362 1363 1364 1365 1366 1367
	/*
	 * 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
1368 1369
	if (vif->type == NL80211_IFTYPE_AP ||
	    vif->type == NL80211_IFTYPE_ADHOC) {
1370
		ret = iwl_mvm_alloc_bcast_sta(mvm, vif);
J
Johannes Berg 已提交
1371 1372 1373 1374 1375
		if (ret) {
			IWL_ERR(mvm, "Failed to allocate bcast sta\n");
			goto out_release;
		}

1376 1377 1378 1379 1380 1381 1382 1383 1384
		/*
		 * 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;
1385

1386
		iwl_mvm_vif_dbgfs_register(mvm, vif);
J
Johannes Berg 已提交
1387 1388 1389
		goto out_unlock;
	}

1390 1391
	mvmvif->features |= hw->netdev_features;

J
Johannes Berg 已提交
1392 1393 1394 1395
	ret = iwl_mvm_mac_ctxt_add(mvm, vif);
	if (ret)
		goto out_release;

1396
	ret = iwl_mvm_power_update_mac(mvm);
1397
	if (ret)
1398
		goto out_remove_mac;
J
Johannes Berg 已提交
1399

1400
	/* beacon filtering */
E
Emmanuel Grumbach 已提交
1401
	ret = iwl_mvm_disable_beacon_filter(mvm, vif, 0);
1402 1403 1404
	if (ret)
		goto out_remove_mac;

1405
	if (!mvm->bf_allowed_vif &&
1406
	    vif->type == NL80211_IFTYPE_STATION && !vif->p2p) {
1407
		mvm->bf_allowed_vif = mvmvif;
1408 1409
		vif->driver_flags |= IEEE80211_VIF_BEACON_FILTER |
				     IEEE80211_VIF_SUPPORTS_CQM_RSSI;
1410 1411
	}

J
Johannes Berg 已提交
1412 1413 1414 1415 1416 1417 1418
	/*
	 * 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) {

1419 1420 1421
		mvmvif->phy_ctxt = iwl_mvm_get_free_phy_ctxt(mvm);
		if (!mvmvif->phy_ctxt) {
			ret = -ENOSPC;
1422
			goto out_free_bf;
1423
		}
J
Johannes Berg 已提交
1424

1425
		iwl_mvm_phy_ctxt_ref(mvm, mvmvif->phy_ctxt);
J
Johannes Berg 已提交
1426 1427
		ret = iwl_mvm_binding_add_vif(mvm, vif);
		if (ret)
1428
			goto out_unref_phy;
J
Johannes Berg 已提交
1429

1430
		ret = iwl_mvm_add_p2p_bcast_sta(mvm, vif);
J
Johannes Berg 已提交
1431 1432 1433 1434 1435 1436 1437 1438
		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;
	}

1439
	iwl_mvm_vif_dbgfs_register(mvm, vif);
J
Johannes Berg 已提交
1440 1441 1442 1443
	goto out_unlock;

 out_unbind:
	iwl_mvm_binding_remove_vif(mvm, vif);
1444
 out_unref_phy:
1445
	iwl_mvm_phy_ctxt_unref(mvm, mvmvif->phy_ctxt);
1446 1447 1448
 out_free_bf:
	if (mvm->bf_allowed_vif == mvmvif) {
		mvm->bf_allowed_vif = NULL;
1449 1450
		vif->driver_flags &= ~(IEEE80211_VIF_BEACON_FILTER |
				       IEEE80211_VIF_SUPPORTS_CQM_RSSI);
1451
	}
J
Johannes Berg 已提交
1452 1453 1454 1455
 out_remove_mac:
	mvmvif->phy_ctxt = NULL;
	iwl_mvm_mac_ctxt_remove(mvm, vif);
 out_release:
1456 1457
	if (vif->type != NL80211_IFTYPE_P2P_DEVICE)
		mvm->vif_count--;
J
Johannes Berg 已提交
1458 1459 1460
 out_unlock:
	mutex_unlock(&mvm->mutex);

1461 1462
	iwl_mvm_unref(mvm, IWL_MVM_REF_ADD_IF);

J
Johannes Berg 已提交
1463 1464 1465
	return ret;
}

1466 1467
static void iwl_mvm_prepare_mac_removal(struct iwl_mvm *mvm,
					struct ieee80211_vif *vif)
J
Johannes Berg 已提交
1468 1469 1470 1471 1472 1473 1474 1475 1476
{
	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);
	}
1477 1478 1479 1480 1481 1482 1483 1484 1485
}

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
1486 1487 1488

	mutex_lock(&mvm->mutex);

1489 1490
	if (mvm->bf_allowed_vif == mvmvif) {
		mvm->bf_allowed_vif = NULL;
1491 1492
		vif->driver_flags &= ~(IEEE80211_VIF_BEACON_FILTER |
				       IEEE80211_VIF_SUPPORTS_CQM_RSSI);
1493 1494
	}

1495 1496
	iwl_mvm_vif_dbgfs_clean(mvm, vif);

J
Johannes Berg 已提交
1497 1498
	/*
	 * For AP/GO interface, the tear down of the resources allocated to the
1499
	 * interface is be handled as part of the stop_ap flow.
J
Johannes Berg 已提交
1500
	 */
J
Johannes Berg 已提交
1501 1502
	if (vif->type == NL80211_IFTYPE_AP ||
	    vif->type == NL80211_IFTYPE_ADHOC) {
1503 1504 1505 1506 1507 1508
#ifdef CONFIG_NL80211_TESTMODE
		if (vif == mvm->noa_vif) {
			mvm->noa_vif = NULL;
			mvm->noa_duration = 0;
		}
#endif
1509
		iwl_mvm_dealloc_int_sta(mvm, &mvmvif->mcast_sta);
1510
		iwl_mvm_dealloc_bcast_sta(mvm, vif);
J
Johannes Berg 已提交
1511 1512 1513 1514 1515
		goto out_release;
	}

	if (vif->type == NL80211_IFTYPE_P2P_DEVICE) {
		mvm->p2p_device_vif = NULL;
1516
		iwl_mvm_rm_p2p_bcast_sta(mvm, vif);
J
Johannes Berg 已提交
1517
		iwl_mvm_binding_remove_vif(mvm, vif);
1518
		iwl_mvm_phy_ctxt_unref(mvm, mvmvif->phy_ctxt);
J
Johannes Berg 已提交
1519 1520 1521
		mvmvif->phy_ctxt = NULL;
	}

1522
	if (mvm->vif_count && vif->type != NL80211_IFTYPE_P2P_DEVICE)
J
Johannes Berg 已提交
1523
		mvm->vif_count--;
1524

1525
	iwl_mvm_power_update_mac(mvm);
J
Johannes Berg 已提交
1526 1527 1528 1529 1530 1531 1532
	iwl_mvm_mac_ctxt_remove(mvm, vif);

out_release:
	mutex_unlock(&mvm->mutex);
}

static int iwl_mvm_mac_config(struct ieee80211_hw *hw, u32 changed)
1533
{
J
Johannes Berg 已提交
1534 1535 1536
	return 0;
}

1537 1538 1539 1540 1541 1542 1543 1544 1545 1546 1547 1548 1549 1550 1551 1552 1553 1554 1555 1556 1557 1558 1559 1560 1561
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;
	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);

1562
	ret = iwl_mvm_send_cmd_pdu(mvm, MCAST_FILTER_CMD, CMD_ASYNC, len, cmd);
1563 1564 1565 1566 1567 1568 1569 1570
	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,
1571 1572
	};

1573 1574 1575 1576 1577
	lockdep_assert_held(&mvm->mutex);

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

1578
	ieee80211_iterate_active_interfaces_atomic(
1579 1580
		mvm->hw, IEEE80211_IFACE_ITER_NORMAL,
		iwl_mvm_mc_iface_iterator, &iter_data);
1581 1582
}

1583 1584
static u64 iwl_mvm_prepare_multicast(struct ieee80211_hw *hw,
				     struct netdev_hw_addr_list *mc_list)
J
Johannes Berg 已提交
1585
{
1586 1587 1588
	struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
	struct iwl_mcast_filter_cmd *cmd;
	struct netdev_hw_addr *addr;
1589 1590
	int addr_count;
	bool pass_all;
1591 1592
	int len;

1593 1594 1595 1596
	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)
1597 1598 1599 1600 1601 1602 1603 1604 1605 1606 1607 1608 1609 1610 1611 1612 1613 1614 1615 1616 1617
		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;
J
Johannes Berg 已提交
1618 1619 1620 1621 1622 1623 1624
}

static void iwl_mvm_configure_filter(struct ieee80211_hw *hw,
				     unsigned int changed_flags,
				     unsigned int *total_flags,
				     u64 multicast)
{
1625 1626
	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
1627

1628
	mutex_lock(&mvm->mutex);
1629

1630 1631 1632
	/* replace previous configuration */
	kfree(mvm->mcast_filter_cmd);
	mvm->mcast_filter_cmd = cmd;
1633

1634 1635
	if (!cmd)
		goto out;
1636

1637 1638 1639 1640
	iwl_mvm_recalc_multicast(mvm);
out:
	mutex_unlock(&mvm->mutex);
	*total_flags = 0;
1641 1642
}

1643 1644 1645 1646 1647 1648 1649 1650 1651 1652 1653 1654 1655 1656 1657 1658 1659 1660 1661 1662 1663
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);
}

1664 1665 1666 1667 1668 1669 1670 1671 1672 1673 1674 1675 1676 1677 1678 1679 1680 1681 1682 1683 1684 1685 1686
#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;

1687 1688 1689 1690 1691 1692 1693 1694 1695 1696 1697 1698 1699 1700 1701 1702
		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;
1703 1704 1705 1706 1707 1708 1709 1710 1711 1712 1713 1714 1715 1716 1717 1718 1719 1720 1721
		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];

1722 1723 1724 1725 1726 1727
	/*
	 * enable filtering only for associated stations, but not for P2P
	 * Clients
	 */
	if (vif->type != NL80211_IFTYPE_STATION || vif->p2p ||
	    !vif->bss_conf.assoc)
1728 1729 1730 1731 1732 1733 1734 1735 1736 1737 1738 1739 1740 1741 1742 1743 1744 1745 1746 1747 1748 1749 1750 1751 1752 1753 1754 1755 1756 1757 1758 1759 1760 1761
		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++;
	}
}

1762 1763
bool iwl_mvm_bcast_filter_build_cmd(struct iwl_mvm *mvm,
				    struct iwl_bcast_filter_cmd *cmd)
1764 1765 1766
{
	struct iwl_bcast_iter_data iter_data = {
		.mvm = mvm,
1767
		.cmd = cmd,
1768 1769
	};

1770 1771 1772
	if (IWL_MVM_FW_BCAST_FILTER_PASS_ALL)
		return false;

1773 1774 1775 1776 1777 1778 1779 1780 1781 1782 1783 1784 1785 1786
	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
1787 1788 1789

	/* if no filters are configured, do nothing */
	if (!mvm->bcast_filters)
1790
		return false;
1791 1792 1793 1794 1795 1796

	/* 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);

1797 1798
	return true;
}
1799 1800

static int iwl_mvm_configure_bcast_filter(struct iwl_mvm *mvm)
1801 1802 1803 1804 1805 1806 1807 1808 1809
{
	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
1810
	return iwl_mvm_send_cmd_pdu(mvm, BCAST_FILTER_CMD, 0,
1811 1812 1813
				    sizeof(cmd), &cmd);
}
#else
1814
static inline int iwl_mvm_configure_bcast_filter(struct iwl_mvm *mvm)
1815 1816 1817 1818 1819
{
	return 0;
}
#endif

1820 1821 1822 1823 1824 1825 1826 1827 1828 1829 1830 1831 1832 1833 1834 1835
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);
}

1836 1837 1838 1839 1840 1841 1842 1843 1844 1845 1846 1847 1848 1849 1850 1851 1852 1853 1854 1855 1856 1857 1858 1859 1860 1861 1862 1863
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);
}

J
Johannes Berg 已提交
1864 1865 1866 1867 1868 1869 1870 1871
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;

1872 1873 1874 1875 1876 1877 1878 1879
	/*
	 * 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.
	 */
	if (changes & BSS_CHANGED_ASSOC && bss_conf->assoc)
		iwl_mvm_mac_ctxt_recalc_tsf_id(mvm, vif);

1880 1881 1882 1883 1884
	if (changes & BSS_CHANGED_ASSOC && !bss_conf->assoc &&
	    mvmvif->lqm_active)
		iwl_mvm_send_lqm_cmd(vif, LQM_CMD_OPERATION_STOP_MEASUREMENT,
				     0, 0);

1885 1886 1887 1888 1889 1890 1891 1892 1893 1894
	/*
	 * 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
1895 1896 1897
	if (ret)
		IWL_ERR(mvm, "failed to update MAC %pM\n", vif->addr);

1898 1899 1900 1901
	/* 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
1902 1903
	if (changes & BSS_CHANGED_ASSOC) {
		if (bss_conf->assoc) {
1904 1905 1906 1907 1908
			/* 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
1909
			/* add quota for this interface */
1910
			ret = iwl_mvm_update_quotas(mvm, true, NULL);
J
Johannes Berg 已提交
1911 1912 1913 1914
			if (ret) {
				IWL_ERR(mvm, "failed to update quotas\n");
				return;
			}
1915 1916 1917 1918 1919 1920 1921 1922 1923 1924 1925 1926 1927 1928 1929 1930 1931 1932 1933

			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,
1934
							5 * dur, false);
1935
			}
1936 1937

			iwl_mvm_sf_update(mvm, vif, false);
1938
			iwl_mvm_power_vif_assoc(mvm, vif);
1939
			if (vif->p2p) {
1940
				iwl_mvm_ref(mvm, IWL_MVM_REF_P2P_CLIENT);
1941 1942 1943 1944
				iwl_mvm_update_smps(mvm, vif,
						    IWL_MVM_SMPS_REQ_PROT,
						    IEEE80211_SMPS_DYNAMIC);
			}
1945
		} else if (mvmvif->ap_sta_id != IWL_MVM_INVALID_STA) {
1946 1947 1948 1949 1950 1951 1952
			/*
			 * 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");

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
			/*
			 * 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;
			}
1978

J
Johannes Berg 已提交
1979
			/* remove quota for this interface */
1980
			ret = iwl_mvm_update_quotas(mvm, false, NULL);
J
Johannes Berg 已提交
1981 1982
			if (ret)
				IWL_ERR(mvm, "failed to update quotas\n");
1983 1984 1985

			if (vif->p2p)
				iwl_mvm_unref(mvm, IWL_MVM_REF_P2P_CLIENT);
1986 1987 1988 1989 1990 1991 1992

			/* 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
1993
		}
1994

1995 1996
		/*
		 * The firmware tracks the MU-MIMO group on its own.
1997
		 * However, on HW restart we should restore this data.
1998 1999
		 */
		if (test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status) &&
2000
		    (changes & BSS_CHANGED_MU_GROUPS) && vif->mu_mimo_owner) {
2001 2002 2003 2004 2005 2006
			ret = iwl_mvm_update_mu_groups(mvm, vif);
			if (ret)
				IWL_ERR(mvm,
					"failed to update VHT MU_MIMO groups\n");
		}

2007
		iwl_mvm_recalc_multicast(mvm);
2008
		iwl_mvm_configure_bcast_filter(mvm);
2009

2010 2011 2012
		/* reset rssi values */
		mvmvif->bf_data.ave_beacon_signal = 0;

2013
		iwl_mvm_bt_coex_vif_change(mvm);
2014 2015
		iwl_mvm_update_smps(mvm, vif, IWL_MVM_SMPS_REQ_TT,
				    IEEE80211_SMPS_AUTOMATIC);
2016 2017 2018
		if (fw_has_capa(&mvm->fw->ucode_capa,
				IWL_UCODE_TLV_CAPA_UMAC_SCAN))
			iwl_mvm_config_scan(mvm);
2019 2020 2021
	}

	if (changes & BSS_CHANGED_BEACON_INFO) {
2022
		/*
2023
		 * We received a beacon from the associated AP so
2024 2025
		 * remove the session protection.
		 */
2026
		iwl_mvm_stop_session_protection(mvm, vif);
2027 2028 2029 2030 2031

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

2032 2033 2034 2035 2036 2037
	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)) {
2038 2039 2040 2041 2042
		ret = iwl_mvm_power_update_mac(mvm);
		if (ret)
			IWL_ERR(mvm, "failed to update power mode\n");
	}

2043 2044 2045 2046 2047
	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);
	}
2048 2049

	if (changes & BSS_CHANGED_CQM) {
2050
		IWL_DEBUG_MAC80211(mvm, "cqm info_changed\n");
2051 2052
		/* reset cqm events tracking */
		mvmvif->bf_data.last_cqm_event = 0;
2053 2054 2055 2056 2057 2058
		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");
		}
2059
	}
2060 2061

	if (changes & BSS_CHANGED_ARP_FILTER) {
2062
		IWL_DEBUG_MAC80211(mvm, "arp filter changed\n");
2063
		iwl_mvm_configure_bcast_filter(mvm);
2064
	}
J
Johannes Berg 已提交
2065 2066
}

J
Johannes Berg 已提交
2067 2068
static int iwl_mvm_start_ap_ibss(struct ieee80211_hw *hw,
				 struct ieee80211_vif *vif)
J
Johannes Berg 已提交
2069 2070 2071 2072 2073
{
	struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
	struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
	int ret;

2074 2075 2076 2077 2078 2079 2080 2081
	/*
	 * 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
2082 2083 2084 2085 2086 2087 2088
	mutex_lock(&mvm->mutex);

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

2089 2090 2091 2092 2093 2094 2095
	/*
	 * 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);

2096 2097
	mvmvif->ap_assoc_sta_count = 0;

J
Johannes Berg 已提交
2098 2099 2100 2101 2102 2103 2104 2105 2106 2107
	/* 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;

2108
	ret = iwl_mvm_add_mcast_sta(mvm, vif);
J
Johannes Berg 已提交
2109 2110 2111
	if (ret)
		goto out_unbind;

2112 2113 2114
	/* 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);
2115
	if (ret)
2116
		goto out_rm_mcast;
2117

2118 2119 2120
	/* must be set before quota calculations */
	mvmvif->ap_ibss_active = true;

2121
	/* power updated needs to be done before quotas */
2122
	iwl_mvm_power_update_mac(mvm);
2123

2124
	ret = iwl_mvm_update_quotas(mvm, false, NULL);
J
Johannes Berg 已提交
2125
	if (ret)
2126
		goto out_quota_failed;
J
Johannes Berg 已提交
2127

J
Johannes Berg 已提交
2128
	/* Need to update the P2P Device MAC (only GO, IBSS is single vif) */
J
Johannes Berg 已提交
2129
	if (vif->p2p && mvm->p2p_device_vif)
2130
		iwl_mvm_mac_ctxt_changed(mvm, mvm->p2p_device_vif, false, NULL);
J
Johannes Berg 已提交
2131

2132 2133
	iwl_mvm_ref(mvm, IWL_MVM_REF_AP_IBSS);

2134
	iwl_mvm_bt_coex_vif_change(mvm);
E
Emmanuel Grumbach 已提交
2135

2136 2137 2138 2139
	/* we don't support TDLS during DCM */
	if (iwl_mvm_phy_ctx_count(mvm) > 1)
		iwl_mvm_teardown_tdls_peers(mvm);

2140
	goto out_unlock;
J
Johannes Berg 已提交
2141

2142
out_quota_failed:
2143
	iwl_mvm_power_update_mac(mvm);
2144
	mvmvif->ap_ibss_active = false;
2145
	iwl_mvm_send_rm_bcast_sta(mvm, vif);
2146 2147
out_rm_mcast:
	iwl_mvm_rm_mcast_sta(mvm, vif);
J
Johannes Berg 已提交
2148 2149 2150 2151 2152 2153
out_unbind:
	iwl_mvm_binding_remove_vif(mvm, vif);
out_remove:
	iwl_mvm_mac_ctxt_remove(mvm, vif);
out_unlock:
	mutex_unlock(&mvm->mutex);
2154
	iwl_mvm_unref(mvm, IWL_MVM_REF_START_AP);
J
Johannes Berg 已提交
2155 2156 2157
	return ret;
}

J
Johannes Berg 已提交
2158 2159
static void iwl_mvm_stop_ap_ibss(struct ieee80211_hw *hw,
				 struct ieee80211_vif *vif)
J
Johannes Berg 已提交
2160 2161 2162 2163
{
	struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
	struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);

2164 2165
	iwl_mvm_prepare_mac_removal(mvm, vif);

J
Johannes Berg 已提交
2166 2167
	mutex_lock(&mvm->mutex);

2168
	/* Handle AP stop while in CSA */
2169 2170 2171
	if (rcu_access_pointer(mvm->csa_vif) == vif) {
		iwl_mvm_remove_time_event(mvm, mvmvif,
					  &mvmvif->time_event_data);
2172
		RCU_INIT_POINTER(mvm->csa_vif, NULL);
2173
		mvmvif->csa_countdown = false;
2174
	}
2175

2176 2177 2178 2179 2180
	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
2181
	mvmvif->ap_ibss_active = false;
2182
	mvm->ap_last_beacon_gp2 = 0;
J
Johannes Berg 已提交
2183

2184
	iwl_mvm_bt_coex_vif_change(mvm);
E
Emmanuel Grumbach 已提交
2185

2186 2187
	iwl_mvm_unref(mvm, IWL_MVM_REF_AP_IBSS);

J
Johannes Berg 已提交
2188
	/* Need to update the P2P Device MAC (only GO, IBSS is single vif) */
J
Johannes Berg 已提交
2189
	if (vif->p2p && mvm->p2p_device_vif)
2190
		iwl_mvm_mac_ctxt_changed(mvm, mvm->p2p_device_vif, false, NULL);
J
Johannes Berg 已提交
2191

2192
	iwl_mvm_update_quotas(mvm, false, NULL);
2193 2194 2195 2196 2197 2198 2199 2200 2201 2202 2203

	/*
	 * 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);
2204
	iwl_mvm_send_rm_bcast_sta(mvm, vif);
2205 2206
	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
2207
	iwl_mvm_binding_remove_vif(mvm, vif);
2208

2209
	iwl_mvm_power_update_mac(mvm);
2210

J
Johannes Berg 已提交
2211 2212 2213 2214 2215
	iwl_mvm_mac_ctxt_remove(mvm, vif);

	mutex_unlock(&mvm->mutex);
}

J
Johannes Berg 已提交
2216 2217 2218 2219 2220
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
2221
{
2222
	struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
2223

2224 2225 2226 2227
	/* Changes will be applied when the AP/IBSS is started */
	if (!mvmvif->ap_ibss_active)
		return;

2228
	if (changes & (BSS_CHANGED_ERP_CTS_PROT | BSS_CHANGED_HT |
2229
		       BSS_CHANGED_BANDWIDTH | BSS_CHANGED_QOS) &&
2230
	    iwl_mvm_mac_ctxt_changed(mvm, vif, false, NULL))
2231
		IWL_ERR(mvm, "failed to update MAC %pM\n", vif->addr);
2232

J
Johannes Berg 已提交
2233
	/* Need to send a new beacon template to the FW */
2234 2235 2236
	if (changes & BSS_CHANGED_BEACON &&
	    iwl_mvm_mac_ctxt_beacon_changed(mvm, vif))
		IWL_WARN(mvm, "Failed updating beacon data\n");
2237 2238 2239 2240 2241 2242

	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
2243 2244 2245 2246 2247 2248 2249 2250 2251
}

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);

2252 2253 2254 2255 2256 2257 2258 2259
	/*
	 * 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
2260 2261
	mutex_lock(&mvm->mutex);

2262
	if (changes & BSS_CHANGED_IDLE && !bss_conf->idle)
2263
		iwl_mvm_scan_stop(mvm, IWL_MVM_SCAN_SCHED, true);
2264

J
Johannes Berg 已提交
2265 2266 2267 2268 2269
	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
2270 2271
	case NL80211_IFTYPE_ADHOC:
		iwl_mvm_bss_info_changed_ap_ibss(mvm, vif, bss_conf, changes);
J
Johannes Berg 已提交
2272
		break;
2273 2274 2275 2276
	case NL80211_IFTYPE_MONITOR:
		if (changes & BSS_CHANGED_MU_GROUPS)
			iwl_mvm_update_mu_groups(mvm, vif);
		break;
J
Johannes Berg 已提交
2277 2278 2279 2280 2281 2282
	default:
		/* shouldn't happen */
		WARN_ON_ONCE(1);
	}

	mutex_unlock(&mvm->mutex);
2283
	iwl_mvm_unref(mvm, IWL_MVM_REF_BSS_CHANGED);
J
Johannes Berg 已提交
2284 2285 2286 2287
}

static int iwl_mvm_mac_hw_scan(struct ieee80211_hw *hw,
			       struct ieee80211_vif *vif,
2288
			       struct ieee80211_scan_request *hw_req)
J
Johannes Berg 已提交
2289 2290 2291 2292
{
	struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
	int ret;

2293 2294
	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
2295 2296 2297
		return -EINVAL;

	mutex_lock(&mvm->mutex);
2298
	ret = iwl_mvm_reg_scan_start(mvm, vif, &hw_req->req, &hw_req->ies);
J
Johannes Berg 已提交
2299
	mutex_unlock(&mvm->mutex);
2300

J
Johannes Berg 已提交
2301 2302 2303 2304 2305 2306 2307 2308 2309 2310
	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);

2311 2312 2313 2314 2315 2316 2317
	/* 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.
	*/
2318
	if (mvm->scan_status & IWL_MVM_SCAN_REGULAR)
2319
		iwl_mvm_scan_stop(mvm, IWL_MVM_SCAN_REGULAR, true);
J
Johannes Berg 已提交
2320 2321 2322 2323 2324 2325

	mutex_unlock(&mvm->mutex);
}

static void
iwl_mvm_mac_allow_buffered_frames(struct ieee80211_hw *hw,
2326
				  struct ieee80211_sta *sta, u16 tids,
J
Johannes Berg 已提交
2327 2328 2329 2330 2331 2332
				  int num_frames,
				  enum ieee80211_frame_release_type reason,
				  bool more_data)
{
	struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);

2333
	/* Called when we need to transmit (a) frame(s) from mac80211 */
J
Johannes Berg 已提交
2334

2335 2336 2337 2338 2339 2340 2341 2342 2343 2344 2345 2346 2347
	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);

2348
	/* Called when we need to transmit (a) frame(s) from agg or dqa queue */
2349 2350 2351

	iwl_mvm_sta_modify_sleep_tx_count(mvm, sta, reason, num_frames,
					  tids, more_data, true);
J
Johannes Berg 已提交
2352 2353
}

2354 2355 2356
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
2357 2358
{
	struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2359
	struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta);
2360
	unsigned long txqs = 0, tids = 0;
2361
	int tid;
J
Johannes Berg 已提交
2362

2363 2364 2365 2366 2367 2368 2369 2370
	/*
	 * 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;

2371 2372 2373 2374
	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];

2375
		if (tid_data->txq_id == IWL_MVM_INVALID_QUEUE)
2376 2377
			continue;

2378 2379
		__set_bit(tid_data->txq_id, &txqs);

2380
		if (iwl_mvm_tid_queued(mvm, tid_data) == 0)
2381 2382 2383 2384 2385
			continue;

		__set_bit(tid, &tids);
	}

J
Johannes Berg 已提交
2386 2387
	switch (cmd) {
	case STA_NOTIFY_SLEEP:
2388
		for_each_set_bit(tid, &tids, IWL_MAX_TID_COUNT)
2389
			ieee80211_sta_set_buffered(sta, tid, true);
2390 2391 2392

		if (txqs)
			iwl_trans_freeze_txq_timer(mvm->trans, txqs, true);
J
Johannes Berg 已提交
2393 2394 2395 2396 2397 2398 2399
		/*
		 * 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:
2400
		if (WARN_ON(mvmsta->sta_id == IWL_MVM_INVALID_STA))
J
Johannes Berg 已提交
2401
			break;
2402 2403 2404

		if (txqs)
			iwl_trans_freeze_txq_timer(mvm->trans, txqs, false);
2405
		iwl_mvm_sta_modify_ps_wake(mvm, sta);
J
Johannes Berg 已提交
2406 2407 2408 2409
		break;
	default:
		break;
	}
2410
	spin_unlock_bh(&mvmsta->lock);
J
Johannes Berg 已提交
2411 2412
}

2413 2414 2415 2416 2417 2418 2419 2420 2421 2422 2423 2424 2425 2426 2427 2428 2429 2430 2431 2432
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();
2433
	sta = rcu_dereference(mvm->fw_id_to_mac_id[notif->sta_id]);
2434 2435 2436 2437 2438 2439 2440 2441 2442 2443 2444 2445 2446 2447 2448 2449 2450 2451 2452 2453 2454 2455 2456 2457 2458 2459 2460 2461 2462 2463 2464 2465 2466 2467 2468 2469 2470 2471 2472 2473
	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();
}

2474 2475 2476 2477 2478
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);
2479
	struct iwl_mvm_sta *mvm_sta = iwl_mvm_sta_from_mac80211(sta);
2480 2481 2482 2483 2484 2485 2486 2487 2488 2489 2490 2491 2492

	/*
	 * 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));
2493

2494 2495 2496
	mutex_unlock(&mvm->mutex);
}

2497 2498 2499 2500 2501 2502
static void iwl_mvm_check_uapsd(struct iwl_mvm *mvm, struct ieee80211_vif *vif,
				const u8 *bssid)
{
	if (!(mvm->fw->ucode_capa.flags & IWL_UCODE_TLV_FLAGS_UAPSD_SUPPORT))
		return;

2503
	if (vif->p2p && !iwl_mvm_is_p2p_scm_uapsd_supported(mvm)) {
2504 2505 2506 2507
		vif->driver_flags &= ~IEEE80211_VIF_SUPPORTS_UAPSD;
		return;
	}

2508 2509
	if (!vif->p2p &&
	    (iwlwifi_mod_params.uapsd_disable & IWL_DISABLE_UAPSD_BSS)) {
2510 2511 2512 2513 2514 2515 2516
		vif->driver_flags &= ~IEEE80211_VIF_SUPPORTS_UAPSD;
		return;
	}

	vif->driver_flags |= IEEE80211_VIF_SUPPORTS_UAPSD;
}

2517 2518 2519 2520 2521 2522 2523 2524 2525 2526 2527 2528 2529
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;
2530 2531
	if (!iwl_fw_dbg_trigger_check_stop(&mvm->fwrt,
					   ieee80211_vif_to_wdev(vif), trig))
2532 2533 2534 2535 2536 2537 2538 2539 2540
		return;

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

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

2541 2542 2543
	iwl_fw_dbg_collect_trig(&mvm->fwrt, trig,
				"TDLS event occurred, peer %pM, action %d",
				peer_addr, action);
2544 2545
}

2546 2547 2548 2549 2550 2551 2552 2553 2554 2555 2556 2557 2558 2559 2560 2561
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];
		while ((skb = __skb_dequeue(&tid_data->deferred_tx_frames)))
			ieee80211_free_txskb(mvm->hw, skb);
	}
	spin_unlock_bh(&mvm_sta->lock);
}

J
Johannes Berg 已提交
2562 2563 2564 2565 2566 2567 2568 2569
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);
2570
	struct iwl_mvm_sta *mvm_sta = iwl_mvm_sta_from_mac80211(sta);
J
Johannes Berg 已提交
2571 2572 2573 2574 2575 2576 2577 2578 2579
	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;

2580 2581 2582 2583 2584 2585 2586 2587 2588 2589 2590 2591 2592 2593
	/*
	 * 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 &&
2594
	    new_state == IEEE80211_STA_NOTEXIST) {
2595 2596 2597 2598 2599 2600 2601 2602 2603
		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
2604
	mutex_lock(&mvm->mutex);
2605 2606 2607
	/* track whether or not the station is associated */
	mvm_sta->associated = new_state >= IEEE80211_STA_ASSOC;

J
Johannes Berg 已提交
2608 2609
	if (old_state == IEEE80211_STA_NOTEXIST &&
	    new_state == IEEE80211_STA_NONE) {
2610 2611 2612 2613 2614 2615 2616 2617 2618 2619 2620 2621 2622 2623 2624
		/*
		 * 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;
		}
2625 2626 2627

		if (sta->tdls &&
		    (vif->p2p ||
2628 2629
		     iwl_mvm_tdls_sta_count(mvm, NULL) ==
						IWL_MVM_TDLS_STA_COUNT ||
2630 2631 2632 2633 2634 2635
		     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
2636
		ret = iwl_mvm_add_sta(mvm, vif, sta);
2637
		if (sta->tdls && ret == 0) {
2638
			iwl_mvm_recalc_tdls_state(mvm, vif, true);
2639 2640 2641
			iwl_mvm_tdls_check_trigger(mvm, vif, sta->addr,
						   NL80211_TDLS_SETUP);
		}
J
Johannes Berg 已提交
2642 2643
	} else if (old_state == IEEE80211_STA_NONE &&
		   new_state == IEEE80211_STA_AUTH) {
2644 2645 2646 2647 2648
		/*
		 * 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;
2649
		iwl_mvm_check_uapsd(mvm, vif, sta->addr);
J
Johannes Berg 已提交
2650 2651 2652
		ret = 0;
	} else if (old_state == IEEE80211_STA_AUTH &&
		   new_state == IEEE80211_STA_ASSOC) {
2653 2654 2655 2656
		if (vif->type == NL80211_IFTYPE_AP) {
			mvmvif->ap_assoc_sta_count++;
			iwl_mvm_mac_ctxt_changed(mvm, vif, false, NULL);
		}
2657 2658 2659

		iwl_mvm_rs_rate_init(mvm, sta, mvmvif->phy_ctxt->channel->band,
				     true);
2660
		ret = iwl_mvm_update_sta(mvm, vif, sta);
J
Johannes Berg 已提交
2661 2662
	} else if (old_state == IEEE80211_STA_ASSOC &&
		   new_state == IEEE80211_STA_AUTHORIZED) {
2663 2664 2665 2666 2667

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

2668 2669 2670 2671
		if (sta->tdls)
			iwl_mvm_tdls_check_trigger(mvm, vif, sta->addr,
						   NL80211_TDLS_ENABLE_LINK);

2672
		/* enable beacon filtering */
2673
		WARN_ON(iwl_mvm_enable_beacon_filter(mvm, vif, 0));
J
Johannes Berg 已提交
2674 2675 2676
		ret = 0;
	} else if (old_state == IEEE80211_STA_AUTHORIZED &&
		   new_state == IEEE80211_STA_ASSOC) {
2677
		/* disable beacon filtering */
E
Emmanuel Grumbach 已提交
2678
		WARN_ON(iwl_mvm_disable_beacon_filter(mvm, vif, 0));
J
Johannes Berg 已提交
2679 2680 2681
		ret = 0;
	} else if (old_state == IEEE80211_STA_ASSOC &&
		   new_state == IEEE80211_STA_AUTH) {
2682 2683 2684 2685
		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
2686 2687 2688 2689 2690 2691 2692
		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);
2693
		if (sta->tdls) {
2694
			iwl_mvm_recalc_tdls_state(mvm, vif, false);
2695 2696 2697
			iwl_mvm_tdls_check_trigger(mvm, vif, sta->addr,
						   NL80211_TDLS_DISABLE_LINK);
		}
J
Johannes Berg 已提交
2698 2699 2700
	} else {
		ret = -EIO;
	}
2701
 out_unlock:
J
Johannes Berg 已提交
2702 2703
	mutex_unlock(&mvm->mutex);

2704 2705 2706 2707 2708 2709 2710 2711 2712
	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
2713 2714 2715 2716 2717 2718 2719 2720 2721 2722 2723 2724
	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;
}

2725 2726 2727 2728 2729 2730 2731 2732 2733 2734 2735
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
2736 2737 2738 2739 2740 2741 2742 2743 2744 2745 2746 2747 2748 2749 2750 2751 2752
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);
2753
		ret = iwl_mvm_mac_ctxt_changed(mvm, vif, false, NULL);
J
Johannes Berg 已提交
2754 2755 2756 2757 2758 2759 2760 2761 2762 2763
		mutex_unlock(&mvm->mutex);
		return ret;
	}
	return 0;
}

static void iwl_mvm_mac_mgd_prepare_tx(struct ieee80211_hw *hw,
				      struct ieee80211_vif *vif)
{
	struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2764 2765
	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
2766 2767 2768 2769

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

2770 2771 2772 2773 2774 2775 2776
	/*
	 * 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;

J
Johannes Berg 已提交
2777 2778
	mutex_lock(&mvm->mutex);
	/* Try really hard to protect the session and hear a beacon */
2779
	iwl_mvm_protect_session(mvm, vif, duration, min_duration, 500, false);
J
Johannes Berg 已提交
2780
	mutex_unlock(&mvm->mutex);
2781 2782

	iwl_mvm_unref(mvm, IWL_MVM_REF_PREPARE_TX);
J
Johannes Berg 已提交
2783 2784
}

2785 2786 2787
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
2788
					struct ieee80211_scan_ies *ies)
2789 2790 2791 2792
{
	struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);

	int ret;
2793

2794 2795
	mutex_lock(&mvm->mutex);

2796
	if (!vif->bss_conf.idle) {
2797 2798 2799 2800
		ret = -EBUSY;
		goto out;
	}

2801
	ret = iwl_mvm_sched_scan_start(mvm, vif, req, ies, IWL_MVM_SCAN_SCHED);
2802

2803 2804 2805 2806 2807
out:
	mutex_unlock(&mvm->mutex);
	return ret;
}

2808 2809
static int iwl_mvm_mac_sched_scan_stop(struct ieee80211_hw *hw,
				       struct ieee80211_vif *vif)
2810 2811
{
	struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2812
	int ret;
2813 2814

	mutex_lock(&mvm->mutex);
2815 2816 2817 2818 2819 2820 2821 2822 2823

	/* 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.
	*/
2824
	if (!(mvm->scan_status & IWL_MVM_SCAN_SCHED)) {
2825 2826 2827 2828
		mutex_unlock(&mvm->mutex);
		return 0;
	}

2829
	ret = iwl_mvm_scan_stop(mvm, IWL_MVM_SCAN_SCHED, false);
2830
	mutex_unlock(&mvm->mutex);
2831
	iwl_mvm_wait_for_async_handlers(mvm);
2832

2833
	return ret;
2834 2835
}

J
Johannes Berg 已提交
2836 2837 2838 2839 2840 2841 2842
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);
2843 2844 2845
	struct iwl_mvm_sta *mvmsta;
	struct iwl_mvm_key_pn *ptk_pn;
	int keyidx = key->keyidx;
J
Johannes Berg 已提交
2846
	int ret;
2847
	u8 key_offset;
J
Johannes Berg 已提交
2848

2849
	if (iwlwifi_mod_params.swcrypto) {
J
Johannes Berg 已提交
2850 2851 2852 2853 2854 2855 2856
		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;
2857
		key->flags |= IEEE80211_KEY_FLAG_PUT_IV_SPACE;
J
Johannes Berg 已提交
2858
		break;
2859
	case WLAN_CIPHER_SUITE_CCMP:
2860 2861
	case WLAN_CIPHER_SUITE_GCMP:
	case WLAN_CIPHER_SUITE_GCMP_256:
2862 2863
		if (!iwl_mvm_has_new_tx_api(mvm))
			key->flags |= IEEE80211_KEY_FLAG_PUT_IV_SPACE;
2864
		break;
J
Johannes Berg 已提交
2865
	case WLAN_CIPHER_SUITE_AES_CMAC:
2866 2867
	case WLAN_CIPHER_SUITE_BIP_GMAC_128:
	case WLAN_CIPHER_SUITE_BIP_GMAC_256:
2868
		WARN_ON_ONCE(!ieee80211_hw_check(hw, MFP_CAPABLE));
J
Johannes Berg 已提交
2869 2870 2871
		break;
	case WLAN_CIPHER_SUITE_WEP40:
	case WLAN_CIPHER_SUITE_WEP104:
2872 2873 2874 2875 2876 2877
		/* 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
2878
		 */
2879 2880 2881
		if (vif->type != NL80211_IFTYPE_STATION)
			return 0;
		break;
J
Johannes Berg 已提交
2882
	default:
2883 2884 2885 2886 2887 2888
		/* 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
2889 2890 2891 2892 2893 2894
	}

	mutex_lock(&mvm->mutex);

	switch (cmd) {
	case SET_KEY:
J
Johannes Berg 已提交
2895 2896 2897 2898 2899 2900
		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.
2901
			 * CMAC/GMAC in AP/IBSS modes must be done in software.
J
Johannes Berg 已提交
2902
			 */
2903 2904 2905
			if (key->cipher == WLAN_CIPHER_SUITE_AES_CMAC ||
			    key->cipher == WLAN_CIPHER_SUITE_BIP_GMAC_128 ||
			    key->cipher == WLAN_CIPHER_SUITE_BIP_GMAC_256)
2906 2907 2908
				ret = -EOPNOTSUPP;
			else
				ret = 0;
2909 2910 2911 2912 2913 2914 2915

			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;
			}
2916 2917
		}

2918 2919 2920 2921 2922 2923 2924 2925 2926 2927 2928
		/* 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;
		}

2929 2930 2931 2932
		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 ||
2933 2934
		     key->cipher == WLAN_CIPHER_SUITE_GCMP ||
		     key->cipher == WLAN_CIPHER_SUITE_GCMP_256)) {
2935 2936 2937 2938 2939 2940 2941 2942 2943 2944 2945 2946 2947 2948 2949 2950 2951 2952 2953 2954 2955 2956 2957 2958 2959
			struct ieee80211_key_seq seq;
			int tid, q;

			mvmsta = iwl_mvm_sta_from_mac80211(sta);
			WARN_ON(rcu_access_pointer(mvmsta->ptk_pn[keyidx]));
			ptk_pn = kzalloc(sizeof(*ptk_pn) +
					 mvm->trans->num_rx_queues *
						sizeof(ptk_pn->q[0]),
					 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);
		}

2960 2961 2962 2963 2964 2965
		/* 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
2966
		IWL_DEBUG_MAC80211(mvm, "set hwcrypto key\n");
2967
		ret = iwl_mvm_set_sta_key(mvm, vif, sta, key, key_offset);
J
Johannes Berg 已提交
2968 2969 2970 2971 2972 2973
		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
			 */
2974
			key->hw_key_idx = STA_KEY_IDX_INVALID;
J
Johannes Berg 已提交
2975 2976 2977 2978 2979
			ret = 0;
		}

		break;
	case DISABLE_KEY:
2980 2981 2982 2983 2984
		if (key->hw_key_idx == STA_KEY_IDX_INVALID) {
			ret = 0;
			break;
		}

2985 2986 2987
		if (sta && iwl_mvm_has_new_rx_api(mvm) &&
		    key->flags & IEEE80211_KEY_FLAG_PAIRWISE &&
		    (key->cipher == WLAN_CIPHER_SUITE_CCMP ||
2988 2989
		     key->cipher == WLAN_CIPHER_SUITE_GCMP ||
		     key->cipher == WLAN_CIPHER_SUITE_GCMP_256)) {
2990 2991 2992 2993 2994 2995 2996 2997 2998
			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
2999 3000 3001 3002 3003 3004 3005 3006 3007 3008 3009 3010 3011 3012 3013 3014 3015 3016 3017
		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
3018 3019 3020
	if (keyconf->hw_key_idx == STA_KEY_IDX_INVALID)
		return;

J
Johannes Berg 已提交
3021 3022 3023 3024
	iwl_mvm_update_tkip_key(mvm, vif, keyconf, sta, iv32, phase1key);
}


3025 3026 3027 3028 3029 3030 3031 3032 3033 3034 3035 3036 3037 3038 3039 3040 3041 3042 3043 3044 3045 3046 3047 3048 3049 3050 3051 3052 3053 3054 3055 3056 3057 3058
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;
}

3059 3060 3061 3062 3063
#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)
3064 3065 3066 3067 3068 3069 3070 3071
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;
3072
	static const u16 time_event_response[] = { HOT_SPOT_CMD };
3073
	struct iwl_notification_wait wait_time_event;
3074 3075 3076
	u32 dtim_interval = vif->bss_conf.dtim_period *
		vif->bss_conf.beacon_int;
	u32 req_dur, delay;
3077 3078 3079 3080 3081 3082
	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 */
3083
		.channel_info.band = (channel->band == NL80211_BAND_2GHZ) ?
3084 3085 3086 3087 3088 3089 3090
			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)),
	 };

3091 3092 3093 3094 3095 3096 3097 3098 3099 3100 3101 3102 3103 3104 3105 3106 3107 3108 3109 3110 3111 3112 3113 3114 3115 3116 3117 3118 3119 3120
	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);
3121 3122 3123
	/* Set the node address */
	memcpy(aux_roc_req.node_addr, vif->addr, ETH_ALEN);

3124 3125 3126 3127 3128 3129 3130 3131 3132
	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;
	}

3133 3134 3135 3136 3137 3138 3139 3140 3141 3142 3143 3144 3145 3146 3147 3148 3149 3150 3151 3152 3153 3154 3155 3156 3157 3158 3159 3160 3161 3162 3163 3164 3165 3166 3167 3168 3169 3170 3171 3172 3173 3174 3175 3176
	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
3177 3178 3179
static int iwl_mvm_roc(struct ieee80211_hw *hw,
		       struct ieee80211_vif *vif,
		       struct ieee80211_channel *channel,
3180 3181
		       int duration,
		       enum ieee80211_roc_type type)
J
Johannes Berg 已提交
3182 3183
{
	struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3184
	struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
J
Johannes Berg 已提交
3185
	struct cfg80211_chan_def chandef;
3186 3187 3188 3189 3190
	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
3191

3192 3193
	flush_work(&mvm->roc_done_wk);

3194 3195
	mutex_lock(&mvm->mutex);

3196 3197
	switch (vif->type) {
	case NL80211_IFTYPE_STATION:
3198 3199
		if (fw_has_capa(&mvm->fw->ucode_capa,
				IWL_UCODE_TLV_CAPA_HOTSPOT_SUPPORT)) {
3200 3201 3202 3203 3204 3205 3206
			/* 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;
3207
		goto out_unlock;
3208 3209 3210 3211 3212
	case NL80211_IFTYPE_P2P_DEVICE:
		/* handle below */
		break;
	default:
		IWL_ERR(mvm, "vif isn't P2P_DEVICE: %d\n", vif->type);
3213 3214
		ret = -EINVAL;
		goto out_unlock;
J
Johannes Berg 已提交
3215 3216
	}

3217 3218 3219 3220 3221 3222 3223 3224 3225 3226 3227 3228 3229 3230 3231 3232 3233 3234 3235 3236 3237 3238 3239 3240 3241 3242 3243 3244 3245 3246 3247 3248
	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
3249 3250
	cfg80211_chandef_create(&chandef, channel, NL80211_CHAN_NO_HT);

3251 3252 3253 3254 3255 3256 3257 3258 3259 3260 3261 3262 3263 3264 3265 3266 3267 3268 3269 3270 3271 3272 3273 3274 3275 3276 3277 3278 3279 3280 3281 3282 3283 3284 3285 3286 3287 3288 3289 3290 3291 3292 3293 3294 3295 3296
	/*
	 * 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
3297
	/* Schedule the time events */
3298
	ret = iwl_mvm_start_p2p_roc(mvm, vif, duration, type);
J
Johannes Berg 已提交
3299

3300
out_unlock:
J
Johannes Berg 已提交
3301 3302 3303 3304 3305 3306 3307 3308 3309 3310 3311 3312
	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);
3313
	iwl_mvm_stop_roc(mvm);
J
Johannes Berg 已提交
3314 3315 3316 3317 3318 3319
	mutex_unlock(&mvm->mutex);

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

3320 3321
static int __iwl_mvm_add_chanctx(struct iwl_mvm *mvm,
				 struct ieee80211_chanctx_conf *ctx)
J
Johannes Berg 已提交
3322
{
3323 3324
	u16 *phy_ctxt_id = (u16 *)ctx->drv_priv;
	struct iwl_mvm_phy_ctxt *phy_ctxt;
J
Johannes Berg 已提交
3325 3326
	int ret;

3327 3328
	lockdep_assert_held(&mvm->mutex);

3329
	IWL_DEBUG_MAC80211(mvm, "Add channel context\n");
3330 3331 3332 3333 3334 3335

	phy_ctxt = iwl_mvm_get_free_phy_ctxt(mvm);
	if (!phy_ctxt) {
		ret = -ENOSPC;
		goto out;
	}
J
Johannes Berg 已提交
3336

3337
	ret = iwl_mvm_phy_ctxt_changed(mvm, phy_ctxt, &ctx->min_def,
3338 3339
				       ctx->rx_chains_static,
				       ctx->rx_chains_dynamic);
3340 3341 3342 3343 3344
	if (ret) {
		IWL_ERR(mvm, "Failed to add PHY context\n");
		goto out;
	}

3345
	iwl_mvm_phy_ctxt_ref(mvm, phy_ctxt);
3346 3347
	*phy_ctxt_id = phy_ctxt->id;
out:
3348 3349 3350 3351 3352 3353 3354 3355 3356 3357 3358
	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
3359
	mutex_unlock(&mvm->mutex);
3360

J
Johannes Berg 已提交
3361 3362 3363
	return ret;
}

3364 3365 3366 3367 3368 3369 3370 3371 3372 3373 3374
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
3375 3376 3377 3378 3379 3380
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);
3381
	__iwl_mvm_remove_chanctx(mvm, ctx);
J
Johannes Berg 已提交
3382 3383 3384 3385 3386 3387 3388 3389
	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);
3390 3391
	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
3392

3393 3394 3395
	if (WARN_ONCE((phy_ctxt->ref > 1) &&
		      (changed & ~(IEEE80211_CHANCTX_CHANGE_WIDTH |
				   IEEE80211_CHANCTX_CHANGE_RX_CHAINS |
3396 3397
				   IEEE80211_CHANCTX_CHANGE_RADAR |
				   IEEE80211_CHANCTX_CHANGE_MIN_WIDTH)),
3398 3399 3400 3401
		      "Cannot change PHY. Ref=%d, changed=0x%X\n",
		      phy_ctxt->ref, changed))
		return;

J
Johannes Berg 已提交
3402
	mutex_lock(&mvm->mutex);
3403
	iwl_mvm_bt_coex_vif_change(mvm);
3404
	iwl_mvm_phy_ctxt_changed(mvm, phy_ctxt, &ctx->min_def,
J
Johannes Berg 已提交
3405 3406 3407 3408 3409
				 ctx->rx_chains_static,
				 ctx->rx_chains_dynamic);
	mutex_unlock(&mvm->mutex);
}

3410 3411
static int __iwl_mvm_assign_vif_chanctx(struct iwl_mvm *mvm,
					struct ieee80211_vif *vif,
3412 3413
					struct ieee80211_chanctx_conf *ctx,
					bool switching_chanctx)
J
Johannes Berg 已提交
3414
{
3415 3416
	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
3417 3418 3419
	struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
	int ret;

3420
	lockdep_assert_held(&mvm->mutex);
J
Johannes Berg 已提交
3421

3422
	mvmvif->phy_ctxt = phy_ctxt;
J
Johannes Berg 已提交
3423 3424 3425

	switch (vif->type) {
	case NL80211_IFTYPE_AP:
3426 3427
		/* only needed if we're switching chanctx (i.e. during CSA) */
		if (switching_chanctx) {
3428 3429 3430
			mvmvif->ap_ibss_active = true;
			break;
		}
J
Johannes Berg 已提交
3431
	case NL80211_IFTYPE_ADHOC:
J
Johannes Berg 已提交
3432 3433
		/*
		 * The AP binding flow is handled as part of the start_ap flow
J
Johannes Berg 已提交
3434
		 * (in bss_info_changed), similarly for IBSS.
J
Johannes Berg 已提交
3435 3436
		 */
		ret = 0;
3437
		goto out;
J
Johannes Berg 已提交
3438
	case NL80211_IFTYPE_STATION:
3439
		break;
J
Johannes Berg 已提交
3440
	case NL80211_IFTYPE_MONITOR:
3441 3442
		/* always disable PS when a monitor interface is active */
		mvmvif->ps_disabled = true;
J
Johannes Berg 已提交
3443 3444 3445
		break;
	default:
		ret = -EINVAL;
3446
		goto out;
J
Johannes Berg 已提交
3447 3448 3449 3450
	}

	ret = iwl_mvm_binding_add_vif(mvm, vif);
	if (ret)
3451
		goto out;
J
Johannes Berg 已提交
3452 3453

	/*
3454 3455 3456
	 * Power state must be updated before quotas,
	 * otherwise fw will complain.
	 */
3457
	iwl_mvm_power_update_mac(mvm);
3458 3459

	/* Setting the quota at this stage is only required for monitor
J
Johannes Berg 已提交
3460 3461 3462 3463
	 * interfaces. For the other types, the bss_info changed flow
	 * will handle quota settings.
	 */
	if (vif->type == NL80211_IFTYPE_MONITOR) {
3464
		mvmvif->monitor_active = true;
3465
		ret = iwl_mvm_update_quotas(mvm, false, NULL);
J
Johannes Berg 已提交
3466 3467
		if (ret)
			goto out_remove_binding;
3468 3469 3470 3471 3472

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

J
Johannes Berg 已提交
3473 3474
	}

3475
	/* Handle binding during CSA */
3476
	if (vif->type == NL80211_IFTYPE_AP) {
3477
		iwl_mvm_update_quotas(mvm, false, NULL);
3478
		iwl_mvm_mac_ctxt_changed(mvm, vif, false, NULL);
3479 3480
	}

3481
	if (switching_chanctx && vif->type == NL80211_IFTYPE_STATION) {
3482 3483 3484 3485 3486 3487 3488 3489 3490 3491 3492 3493 3494 3495 3496 3497 3498 3499 3500
		u32 duration = 2 * vif->bss_conf.beacon_int;

		/* 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.
		 */
		iwl_mvm_protect_session(mvm, vif, duration, duration,
					vif->bss_conf.beacon_int / 2,
					true);

		iwl_mvm_unref(mvm, IWL_MVM_REF_PROTECT_CSA);

3501
		iwl_mvm_update_quotas(mvm, false, NULL);
3502 3503
	}

3504
	goto out;
J
Johannes Berg 已提交
3505

3506
out_remove_binding:
J
Johannes Berg 已提交
3507
	iwl_mvm_binding_remove_vif(mvm, vif);
3508
	iwl_mvm_power_update_mac(mvm);
3509
out:
J
Johannes Berg 已提交
3510 3511 3512 3513
	if (ret)
		mvmvif->phy_ctxt = NULL;
	return ret;
}
3514 3515 3516
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
3517 3518
{
	struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3519
	int ret;
J
Johannes Berg 已提交
3520 3521

	mutex_lock(&mvm->mutex);
3522
	ret = __iwl_mvm_assign_vif_chanctx(mvm, vif, ctx, false);
3523 3524 3525 3526 3527 3528 3529
	mutex_unlock(&mvm->mutex);

	return ret;
}

static void __iwl_mvm_unassign_vif_chanctx(struct iwl_mvm *mvm,
					   struct ieee80211_vif *vif,
3530 3531
					   struct ieee80211_chanctx_conf *ctx,
					   bool switching_chanctx)
3532 3533
{
	struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
3534
	struct ieee80211_vif *disabled_vif = NULL;
3535 3536

	lockdep_assert_held(&mvm->mutex);
J
Johannes Berg 已提交
3537 3538 3539 3540

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

	switch (vif->type) {
J
Johannes Berg 已提交
3541
	case NL80211_IFTYPE_ADHOC:
3542
		goto out;
J
Johannes Berg 已提交
3543
	case NL80211_IFTYPE_MONITOR:
3544
		mvmvif->monitor_active = false;
3545
		mvmvif->ps_disabled = false;
3546
		iwl_mvm_rm_snif_sta(mvm, vif);
J
Johannes Berg 已提交
3547
		break;
3548 3549
	case NL80211_IFTYPE_AP:
		/* This part is triggered only during CSA */
3550
		if (!switching_chanctx || !mvmvif->ap_ibss_active)
3551
			goto out;
3552

3553 3554
		mvmvif->csa_countdown = false;

3555 3556 3557 3558 3559 3560
		/* 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);

3561
		mvmvif->ap_ibss_active = false;
3562 3563 3564 3565 3566 3567 3568
		break;
	case NL80211_IFTYPE_STATION:
		if (!switching_chanctx)
			break;

		disabled_vif = vif;

3569
		iwl_mvm_mac_ctxt_changed(mvm, vif, true, NULL);
3570
		break;
J
Johannes Berg 已提交
3571 3572 3573 3574
	default:
		break;
	}

3575
	iwl_mvm_update_quotas(mvm, false, disabled_vif);
3576
	iwl_mvm_binding_remove_vif(mvm, vif);
3577

3578
out:
3579
	mvmvif->phy_ctxt = NULL;
3580
	iwl_mvm_power_update_mac(mvm);
3581 3582 3583 3584 3585 3586 3587 3588 3589
}

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);
3590
	__iwl_mvm_unassign_vif_chanctx(mvm, vif, ctx, false);
J
Johannes Berg 已提交
3591 3592 3593
	mutex_unlock(&mvm->mutex);
}

3594 3595 3596
static int
iwl_mvm_switch_vif_chanctx_swap(struct iwl_mvm *mvm,
				struct ieee80211_vif_chanctx_switch *vifs)
3597 3598 3599 3600
{
	int ret;

	mutex_lock(&mvm->mutex);
3601
	__iwl_mvm_unassign_vif_chanctx(mvm, vifs[0].vif, vifs[0].old_ctx, true);
3602 3603 3604 3605 3606 3607 3608 3609
	__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;
	}

3610 3611
	ret = __iwl_mvm_assign_vif_chanctx(mvm, vifs[0].vif, vifs[0].new_ctx,
					   true);
3612 3613 3614 3615 3616 3617
	if (ret) {
		IWL_ERR(mvm,
			"failed to assign new_ctx during channel switch\n");
		goto out_remove;
	}

3618 3619 3620 3621
	/* 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);

3622 3623 3624 3625 3626 3627
	goto out;

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

out_reassign:
3628
	if (__iwl_mvm_add_chanctx(mvm, vifs[0].old_ctx)) {
3629 3630 3631 3632
		IWL_ERR(mvm, "failed to add old_ctx back after failure.\n");
		goto out_restart;
	}

3633 3634
	if (__iwl_mvm_assign_vif_chanctx(mvm, vifs[0].vif, vifs[0].old_ctx,
					 true)) {
3635 3636 3637 3638 3639 3640 3641 3642 3643 3644 3645 3646
		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);
3647 3648 3649 3650

	return ret;
}

3651 3652 3653 3654 3655 3656 3657 3658 3659 3660 3661 3662 3663 3664 3665 3666 3667 3668 3669 3670 3671 3672 3673 3674 3675 3676 3677 3678 3679 3680 3681 3682 3683 3684 3685 3686 3687 3688
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;
}

3689 3690 3691 3692 3693 3694 3695 3696 3697 3698 3699 3700 3701 3702 3703 3704 3705
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:
3706
		ret = iwl_mvm_switch_vif_chanctx_reassign(mvm, vifs);
3707 3708 3709 3710 3711 3712
		break;
	default:
		ret = -EOPNOTSUPP;
		break;
	}

3713 3714 3715
	return ret;
}

3716 3717 3718 3719 3720 3721 3722
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
3723 3724 3725 3726 3727
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);
3728
	struct iwl_mvm_sta *mvm_sta = iwl_mvm_sta_from_mac80211(sta);
J
Johannes Berg 已提交
3729 3730 3731 3732 3733 3734 3735 3736 3737

	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);
}

3738 3739 3740 3741
#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 },
3742
	[IWL_MVM_TM_ATTR_BEACON_FILTER_STATE] = { .type = NLA_U32 },
3743 3744 3745 3746 3747 3748 3749 3750 3751 3752
};

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;

3753 3754
	err = nla_parse(tb, IWL_MVM_TM_ATTR_MAX, data, len, iwl_mvm_tm_policy,
			NULL);
3755 3756 3757 3758 3759 3760 3761 3762 3763 3764 3765 3766 3767 3768 3769 3770 3771 3772 3773 3774
	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;

3775
		return iwl_mvm_update_quotas(mvm, false, NULL);
3776 3777 3778 3779 3780 3781 3782 3783
	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
3784 3785
			return iwl_mvm_enable_beacon_filter(mvm, vif, 0);
		return iwl_mvm_disable_beacon_filter(mvm, vif, 0);
3786 3787 3788 3789 3790 3791 3792 3793 3794 3795 3796 3797 3798 3799 3800 3801 3802 3803 3804 3805
	}

	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

3806 3807 3808 3809 3810 3811 3812 3813 3814 3815 3816 3817 3818 3819
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");
}

3820 3821 3822
static int iwl_mvm_pre_channel_switch(struct ieee80211_hw *hw,
				      struct ieee80211_vif *vif,
				      struct ieee80211_channel_switch *chsw)
3823 3824
{
	struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3825
	struct ieee80211_vif *csa_vif;
3826
	struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
3827
	u32 apply_time;
3828
	int ret;
3829 3830

	mutex_lock(&mvm->mutex);
3831

3832 3833
	mvmvif->csa_failed = false;

3834
	IWL_DEBUG_MAC80211(mvm, "pre CSA to freq %d\n",
3835
			   chsw->chandef.center_freq1);
3836

3837 3838 3839
	iwl_fw_dbg_trigger_simple_stop(&mvm->fwrt,
				       ieee80211_vif_to_wdev(vif),
				       FW_DBG_TRIGGER_CHANNEL_SWITCH);
3840

3841 3842 3843 3844 3845 3846 3847 3848 3849 3850 3851
	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;
		}

3852 3853 3854 3855 3856 3857 3858
		/* 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;
		}

3859
		rcu_assign_pointer(mvm->csa_vif, vif);
3860 3861 3862 3863 3864 3865 3866

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

3867 3868
		mvmvif->csa_target_freq = chsw->chandef.chan->center_freq;

3869
		break;
3870
	case NL80211_IFTYPE_STATION:
3871 3872 3873 3874 3875
		if (mvmvif->lqm_active)
			iwl_mvm_send_lqm_cmd(vif,
					     LQM_CMD_OPERATION_STOP_MEASUREMENT,
					     0, 0);

3876 3877 3878 3879 3880 3881 3882
		/* Schedule the time event to a bit before beacon 1,
		 * to make sure we're in the new channel when the
		 * GO/AP arrives.
		 */
		apply_time = chsw->device_timestamp +
			((vif->bss_conf.beacon_int * (chsw->count - 1) -
			  IWL_MVM_CHANNEL_SWITCH_TIME_CLIENT) * 1024);
3883 3884 3885 3886

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

3887
		iwl_mvm_schedule_csa_period(mvm, vif, vif->bss_conf.beacon_int,
3888
					    apply_time);
3889 3890 3891 3892 3893 3894
		if (mvmvif->bf_data.bf_enabled) {
			ret = iwl_mvm_disable_beacon_filter(mvm, vif, 0);
			if (ret)
				goto out_unlock;
		}

3895
		break;
3896 3897 3898
	default:
		break;
	}
3899

3900 3901 3902 3903 3904
	mvmvif->ps_disabled = true;

	ret = iwl_mvm_power_update_ps(mvm);
	if (ret)
		goto out_unlock;
3905

3906 3907 3908
	/* we won't be on this channel any longer */
	iwl_mvm_teardown_tdls_peers(mvm);

3909 3910
out_unlock:
	mutex_unlock(&mvm->mutex);
3911 3912

	return ret;
3913 3914
}

3915 3916 3917 3918 3919 3920 3921 3922 3923
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);

3924 3925 3926 3927 3928 3929
	if (mvmvif->csa_failed) {
		mvmvif->csa_failed = false;
		ret = -EIO;
		goto out_unlock;
	}

3930 3931 3932 3933 3934 3935 3936 3937 3938 3939 3940 3941 3942 3943
	if (vif->type == NL80211_IFTYPE_STATION) {
		struct iwl_mvm_sta *mvmsta;

		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);
3944 3945 3946 3947

		ret = iwl_mvm_enable_beacon_filter(mvm, vif, 0);
		if (ret)
			goto out_unlock;
3948 3949

		iwl_mvm_stop_session_protection(mvm, vif);
3950 3951
	}

3952 3953 3954 3955
	mvmvif->ps_disabled = false;

	ret = iwl_mvm_power_update_ps(mvm);

3956
out_unlock:
3957 3958 3959 3960 3961
	mutex_unlock(&mvm->mutex);

	return ret;
}

3962 3963 3964 3965 3966 3967
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;
3968 3969 3970
	struct ieee80211_sta *sta;
	int i;
	u32 msk = 0;
3971 3972 3973 3974

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

3975
	/* Make sure we're done with the deferred traffic before flushing */
3976
	flush_work(&mvm->add_stream_wk);
3977

3978 3979 3980
	mutex_lock(&mvm->mutex);
	mvmvif = iwl_mvm_vif_from_mac80211(vif);

3981
	/* flush the AP-station and all TDLS peers */
3982
	for (i = 0; i < ARRAY_SIZE(mvm->fw_id_to_mac_id); i++) {
3983 3984 3985 3986 3987 3988 3989 3990 3991 3992 3993 3994
		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);

3995 3996 3997 3998 3999
		if (drop) {
			if (iwl_mvm_flush_sta(mvm, mvmsta, false, 0))
				IWL_ERR(mvm, "flush request fail\n");
		} else {
			msk |= mvmsta->tfd_queue_msk;
4000 4001
			if (iwl_mvm_has_new_tx_api(mvm))
				iwl_mvm_wait_sta_queues_empty(mvm, mvmsta);
4002
		}
4003
	}
4004

4005
	mutex_unlock(&mvm->mutex);
4006

4007 4008 4009
	/* this can take a while, and we may need/want other operations
	 * to succeed while doing this, so do it without the mutex held
	 */
4010
	if (!drop && !iwl_mvm_has_new_tx_api(mvm))
4011
		iwl_trans_wait_tx_queues_empty(mvm->trans, msk);
4012 4013
}

4014 4015 4016 4017 4018 4019 4020 4021 4022 4023 4024 4025
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;

4026 4027
	if (!fw_has_capa(&mvm->fw->ucode_capa,
			 IWL_UCODE_TLV_CAPA_RADIO_BEACON_STATS))
4028 4029 4030 4031
		return -ENOENT;

	mutex_lock(&mvm->mutex);

4032
	if (iwl_mvm_firmware_running(mvm)) {
4033
		ret = iwl_mvm_request_statistics(mvm, false);
4034 4035 4036 4037 4038 4039 4040 4041 4042 4043 4044 4045 4046 4047 4048 4049 4050 4051 4052 4053 4054 4055 4056 4057
		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);

4058
	ret = 0;
4059 4060 4061 4062 4063
 out:
	mutex_unlock(&mvm->mutex);
	return ret;
}

4064 4065 4066 4067 4068 4069 4070 4071 4072
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);

4073 4074 4075 4076 4077
	if (mvmsta->avg_energy) {
		sinfo->signal_avg = mvmsta->avg_energy;
		sinfo->filled |= BIT(NL80211_STA_INFO_SIGNAL_AVG);
	}

4078 4079
	if (!fw_has_capa(&mvm->fw->ucode_capa,
			 IWL_UCODE_TLV_CAPA_RADIO_BEACON_STATS))
4080 4081 4082 4083 4084 4085 4086 4087 4088 4089 4090 4091 4092 4093 4094 4095 4096 4097 4098 4099 4100 4101 4102 4103 4104 4105 4106 4107 4108
		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;
	sinfo->filled |= BIT(NL80211_STA_INFO_BEACON_RX);
	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;
		sinfo->filled |= BIT(NL80211_STA_INFO_BEACON_SIGNAL_AVG);
	}
 unlock:
	mutex_unlock(&mvm->mutex);
}

4109 4110 4111
static void iwl_mvm_event_mlme_callback(struct iwl_mvm *mvm,
					struct ieee80211_vif *vif,
					const struct ieee80211_event *event)
4112
{
4113 4114 4115 4116 4117
#define CHECK_MLME_TRIGGER(_cnt, _fmt...)				\
	do {								\
		if ((trig_mlme->_cnt) && --(trig_mlme->_cnt))		\
			break;						\
		iwl_fw_dbg_collect_trig(&(mvm)->fwrt, trig, _fmt);	\
4118 4119 4120 4121 4122 4123 4124 4125 4126 4127
	} 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;
4128 4129
	if (!iwl_fw_dbg_trigger_check_stop(&mvm->fwrt,
					   ieee80211_vif_to_wdev(vif), trig))
4130 4131 4132 4133
		return;

	if (event->u.mlme.data == ASSOC_EVENT) {
		if (event->u.mlme.status == MLME_DENIED)
4134
			CHECK_MLME_TRIGGER(stop_assoc_denied,
4135 4136 4137
					   "DENIED ASSOC: reason %d",
					    event->u.mlme.reason);
		else if (event->u.mlme.status == MLME_TIMEOUT)
4138
			CHECK_MLME_TRIGGER(stop_assoc_timeout,
4139 4140 4141
					   "ASSOC TIMEOUT");
	} else if (event->u.mlme.data == AUTH_EVENT) {
		if (event->u.mlme.status == MLME_DENIED)
4142
			CHECK_MLME_TRIGGER(stop_auth_denied,
4143 4144 4145
					   "DENIED AUTH: reason %d",
					   event->u.mlme.reason);
		else if (event->u.mlme.status == MLME_TIMEOUT)
4146
			CHECK_MLME_TRIGGER(stop_auth_timeout,
4147 4148
					   "AUTH TIMEOUT");
	} else if (event->u.mlme.data == DEAUTH_RX_EVENT) {
4149
		CHECK_MLME_TRIGGER(stop_rx_deauth,
4150 4151
				   "DEAUTH RX %d", event->u.mlme.reason);
	} else if (event->u.mlme.data == DEAUTH_TX_EVENT) {
4152
		CHECK_MLME_TRIGGER(stop_tx_deauth,
4153 4154 4155 4156 4157
				   "DEAUTH TX %d", event->u.mlme.reason);
	}
#undef CHECK_MLME_TRIGGER
}

4158 4159 4160 4161 4162 4163 4164 4165 4166 4167 4168 4169
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;
4170 4171
	if (!iwl_fw_dbg_trigger_check_stop(&mvm->fwrt,
					   ieee80211_vif_to_wdev(vif), trig))
4172 4173 4174 4175 4176
		return;

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

4177 4178 4179 4180
	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);
4181 4182 4183 4184 4185 4186 4187 4188 4189 4190 4191 4192 4193 4194 4195
}

static void
iwl_mvm_event_frame_timeout_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;
4196 4197
	if (!iwl_fw_dbg_trigger_check_stop(&mvm->fwrt,
					   ieee80211_vif_to_wdev(vif), trig))
4198 4199 4200 4201 4202
		return;

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

4203 4204 4205
	iwl_fw_dbg_collect_trig(&mvm->fwrt, trig,
				"Frame from %pM timed out, tid %d",
				event->u.ba.sta->addr, event->u.ba.tid);
4206 4207 4208 4209 4210 4211 4212 4213 4214 4215 4216 4217 4218 4219 4220 4221 4222 4223 4224 4225 4226 4227 4228
}

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:
		iwl_mvm_event_frame_timeout_callback(mvm, vif, event);
		break;
	default:
		break;
	}
}

4229 4230 4231
void iwl_mvm_sync_rx_queues_internal(struct iwl_mvm *mvm,
				     struct iwl_mvm_internal_rxq_notif *notif,
				     u32 size)
4232 4233 4234 4235 4236 4237
{
	u32 qmask = BIT(mvm->trans->num_rx_queues) - 1;
	int ret;

	lockdep_assert_held(&mvm->mutex);

4238
	/* TODO - remove a000 disablement when we have RXQ config API */
4239 4240
	if (!iwl_mvm_has_new_rx_api(mvm) ||
	    mvm->trans->cfg->device_family == IWL_DEVICE_FAMILY_A000)
4241 4242
		return;

4243 4244 4245 4246 4247
	notif->cookie = mvm->queue_sync_cookie;

	if (notif->sync)
		atomic_set(&mvm->queue_sync_counter,
			   mvm->trans->num_rx_queues);
4248

4249
	ret = iwl_mvm_notify_rx_queue(mvm, qmask, (u8 *)notif, size);
4250 4251 4252 4253
	if (ret) {
		IWL_ERR(mvm, "Failed to trigger RX queues sync (%d)\n", ret);
		goto out;
	}
4254

4255
	if (notif->sync) {
4256
		ret = wait_event_timeout(mvm->rx_sync_waitq,
4257 4258
					 atomic_read(&mvm->queue_sync_counter) == 0 ||
					 iwl_mvm_is_radio_killed(mvm),
4259
					 HZ);
4260 4261
		WARN_ON_ONCE(!ret && !iwl_mvm_is_radio_killed(mvm));
	}
4262 4263 4264 4265 4266 4267 4268 4269 4270

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);
4271 4272 4273 4274
	struct iwl_mvm_internal_rxq_notif data = {
		.type = IWL_MVM_RXQ_EMPTY,
		.sync = 1,
	};
4275 4276

	mutex_lock(&mvm->mutex);
4277
	iwl_mvm_sync_rx_queues_internal(mvm, &data, sizeof(data));
4278 4279 4280
	mutex_unlock(&mvm->mutex);
}

4281
const struct ieee80211_ops iwl_mvm_hw_ops = {
J
Johannes Berg 已提交
4282 4283 4284
	.tx = iwl_mvm_mac_tx,
	.ampdu_action = iwl_mvm_mac_ampdu_action,
	.start = iwl_mvm_mac_start,
4285
	.reconfig_complete = iwl_mvm_mac_reconfig_complete,
J
Johannes Berg 已提交
4286 4287 4288 4289
	.stop = iwl_mvm_mac_stop,
	.add_interface = iwl_mvm_mac_add_interface,
	.remove_interface = iwl_mvm_mac_remove_interface,
	.config = iwl_mvm_mac_config,
4290
	.prepare_multicast = iwl_mvm_prepare_multicast,
J
Johannes Berg 已提交
4291
	.configure_filter = iwl_mvm_configure_filter,
4292
	.config_iface_filter = iwl_mvm_config_iface_filter,
J
Johannes Berg 已提交
4293 4294 4295
	.bss_info_changed = iwl_mvm_bss_info_changed,
	.hw_scan = iwl_mvm_mac_hw_scan,
	.cancel_hw_scan = iwl_mvm_mac_cancel_hw_scan,
4296
	.sta_pre_rcu_remove = iwl_mvm_sta_pre_rcu_remove,
J
Johannes Berg 已提交
4297 4298 4299
	.sta_state = iwl_mvm_mac_sta_state,
	.sta_notify = iwl_mvm_mac_sta_notify,
	.allow_buffered_frames = iwl_mvm_mac_allow_buffered_frames,
4300
	.release_buffered_frames = iwl_mvm_mac_release_buffered_frames,
J
Johannes Berg 已提交
4301
	.set_rts_threshold = iwl_mvm_mac_set_rts_threshold,
4302
	.sta_rc_update = iwl_mvm_sta_rc_update,
J
Johannes Berg 已提交
4303 4304
	.conf_tx = iwl_mvm_mac_conf_tx,
	.mgd_prepare_tx = iwl_mvm_mac_mgd_prepare_tx,
4305
	.mgd_protect_tdls_discover = iwl_mvm_mac_mgd_protect_tdls_discover,
4306
	.flush = iwl_mvm_mac_flush,
4307 4308
	.sched_scan_start = iwl_mvm_mac_sched_scan_start,
	.sched_scan_stop = iwl_mvm_mac_sched_scan_stop,
J
Johannes Berg 已提交
4309 4310 4311 4312 4313 4314 4315 4316 4317
	.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,
4318
	.switch_vif_chanctx = iwl_mvm_switch_vif_chanctx,
J
Johannes Berg 已提交
4319

J
Johannes Berg 已提交
4320 4321 4322 4323
	.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,
J
Johannes Berg 已提交
4324

4325 4326
	.tx_last_beacon = iwl_mvm_tx_last_beacon,

J
Johannes Berg 已提交
4327 4328
	.set_tim = iwl_mvm_set_tim,

4329
	.channel_switch = iwl_mvm_channel_switch,
4330
	.pre_channel_switch = iwl_mvm_pre_channel_switch,
4331
	.post_channel_switch = iwl_mvm_post_channel_switch,
4332

4333 4334 4335 4336
	.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,

4337 4338
	.event_callback = iwl_mvm_mac_event_callback,

4339 4340
	.sync_rx_queues = iwl_mvm_sync_rx_queues,

4341 4342
	CFG80211_TESTMODE_CMD(iwl_mvm_mac_testmode_cmd)

J
Johannes Berg 已提交
4343 4344 4345 4346 4347 4348 4349 4350 4351 4352 4353
#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
4354
	.get_survey = iwl_mvm_mac_get_survey,
4355
	.sta_statistics = iwl_mvm_mac_sta_statistics,
J
Johannes Berg 已提交
4356
};