mac80211.c 128.8 KB
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/******************************************************************************
 *
 * This file is provided under a dual BSD/GPLv2 license.  When using or
 * redistributing this file, you may do so under either license.
 *
 * GPL LICENSE SUMMARY
 *
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 * Copyright(c) 2012 - 2014 Intel Corporation. All rights reserved.
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 * Copyright(c) 2013 - 2015 Intel Mobile Communications GmbH
 * Copyright(c) 2016 - 2017 Intel Deutschland GmbH
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 * Copyright(c) 2018        Intel Corporation
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 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of version 2 of the GNU General Public License as
 * published by the Free Software Foundation.
 *
 * This program is distributed in the hope that it will be useful, but
 * WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 * General Public License for more details.
 *
 * The full GNU General Public License is included in this distribution
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 * in the file called COPYING.
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 *
 * Contact Information:
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 *  Intel Linux Wireless <linuxwifi@intel.com>
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 * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
 *
 * BSD LICENSE
 *
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 * Copyright(c) 2012 - 2014 Intel Corporation. All rights reserved.
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 * Copyright(c) 2013 - 2015 Intel Mobile Communications GmbH
 * Copyright(c) 2016 - 2017 Intel Deutschland GmbH
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 * Copyright(c) 2018        Intel Corporation
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 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 *
 *  * Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 *  * Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in
 *    the documentation and/or other materials provided with the
 *    distribution.
 *  * Neither the name Intel Corporation nor the names of its
 *    contributors may be used to endorse or promote products derived
 *    from this software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 *
 *****************************************************************************/
#include <linux/kernel.h>
#include <linux/slab.h>
#include <linux/skbuff.h>
#include <linux/netdevice.h>
#include <linux/etherdevice.h>
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#include <linux/ip.h>
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#include <linux/if_arp.h>
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#include <linux/time.h>
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#include <net/mac80211.h>
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#include <net/ieee80211_radiotap.h>
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#include <net/tcp.h>
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#include "iwl-op-mode.h"
#include "iwl-io.h"
#include "mvm.h"
#include "sta.h"
#include "time-event.h"
#include "iwl-eeprom-parse.h"
#include "iwl-phy-db.h"
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#include "testmode.h"
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#include "fw/error-dump.h"
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#include "iwl-prph.h"
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#include "iwl-nvm-parse.h"
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static const struct ieee80211_iface_limit iwl_mvm_limits[] = {
	{
		.max = 1,
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		.types = BIT(NL80211_IFTYPE_STATION),
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	},
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	{
		.max = 1,
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		.types = BIT(NL80211_IFTYPE_AP) |
			BIT(NL80211_IFTYPE_P2P_CLIENT) |
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			BIT(NL80211_IFTYPE_P2P_GO),
	},
	{
		.max = 1,
		.types = BIT(NL80211_IFTYPE_P2P_DEVICE),
	},
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};

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

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

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

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

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

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

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

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

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

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

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

	if (!iwl_mvm_is_d0i3_supported(mvm))
		return true;

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

	return taken;
}

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

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

	return 0;
}

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

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

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

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

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

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

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

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

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

	if (!iwl_mvm_is_lar_supported(mvm))
		return;

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

		kfree(regd);
	}
}

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

		mvm->hw->cipher_schemes = mvm->cs;
		mvm->ciphers[hw->wiphy->n_cipher_suites] = cs->cipher;
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		hw->wiphy->n_cipher_suites++;
	}
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	ieee80211_hw_set(hw, SINGLE_SCAN_ON_ALL_BANDS);
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	hw->wiphy->features |=
		NL80211_FEATURE_SCHED_SCAN_RANDOM_MAC_ADDR |
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		NL80211_FEATURE_SCAN_RANDOM_MAC_ADDR |
		NL80211_FEATURE_ND_RANDOM_MAC_ADDR;
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	hw->sta_data_size = sizeof(struct iwl_mvm_sta);
	hw->vif_data_size = sizeof(struct iwl_mvm_vif);
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	hw->chanctx_data_size = sizeof(u16);
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	hw->wiphy->interface_modes = BIT(NL80211_IFTYPE_STATION) |
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		BIT(NL80211_IFTYPE_P2P_CLIENT) |
		BIT(NL80211_IFTYPE_AP) |
		BIT(NL80211_IFTYPE_P2P_GO) |
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		BIT(NL80211_IFTYPE_P2P_DEVICE) |
		BIT(NL80211_IFTYPE_ADHOC);
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540
	hw->wiphy->flags |= WIPHY_FLAG_IBSS_RSN;
541 542 543 544 545 546
	hw->wiphy->regulatory_flags |= REGULATORY_ENABLE_RELAX_NO_IR;
	if (iwl_mvm_is_lar_supported(mvm))
		hw->wiphy->regulatory_flags |= REGULATORY_WIPHY_SELF_MANAGED;
	else
		hw->wiphy->regulatory_flags |= REGULATORY_CUSTOM_REG |
					       REGULATORY_DISABLE_BEACON_HINTS;
J
Johannes Berg 已提交
547

548
	hw->wiphy->flags |= WIPHY_FLAG_AP_UAPSD;
549
	hw->wiphy->flags |= WIPHY_FLAG_HAS_CHANNEL_SWITCH;
550

J
Johannes Berg 已提交
551 552 553 554
	hw->wiphy->iface_combinations = iwl_mvm_iface_combinations;
	hw->wiphy->n_iface_combinations =
		ARRAY_SIZE(iwl_mvm_iface_combinations);

555
	hw->wiphy->max_remain_on_channel_duration = 10000;
J
Johannes Berg 已提交
556 557 558 559 560 561
	hw->max_listen_interval = IWL_CONN_MAX_LISTEN_INTERVAL;

	/* 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;
562 563 564 565 566 567 568

	/* 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
569
		       ETH_ALEN);
570
		mvm->addresses[i].addr[5]++;
J
Johannes Berg 已提交
571 572 573
		hw->wiphy->n_addresses++;
	}

574 575
	iwl_mvm_reset_phy_ctxts(mvm);

576
	hw->wiphy->max_scan_ie_len = iwl_mvm_max_scan_ie_len(mvm);
577

J
Johannes Berg 已提交
578 579
	hw->wiphy->max_scan_ssids = PROBE_OPTION_MAX;

580
	BUILD_BUG_ON(IWL_MVM_SCAN_STOPPING_MASK & IWL_MVM_SCAN_MASK);
581 582 583
	BUILD_BUG_ON(IWL_MVM_MAX_UMAC_SCANS > HWEIGHT32(IWL_MVM_SCAN_MASK) ||
		     IWL_MVM_MAX_LMAC_SCANS > HWEIGHT32(IWL_MVM_SCAN_MASK));

584
	if (fw_has_capa(&mvm->fw->ucode_capa, IWL_UCODE_TLV_CAPA_UMAC_SCAN))
585 586 587 588
		mvm->max_scans = IWL_MVM_MAX_UMAC_SCANS;
	else
		mvm->max_scans = IWL_MVM_MAX_LMAC_SCANS;

589 590 591 592 593 594
	if (mvm->nvm_data->bands[NL80211_BAND_2GHZ].n_channels)
		hw->wiphy->bands[NL80211_BAND_2GHZ] =
			&mvm->nvm_data->bands[NL80211_BAND_2GHZ];
	if (mvm->nvm_data->bands[NL80211_BAND_5GHZ].n_channels) {
		hw->wiphy->bands[NL80211_BAND_5GHZ] =
			&mvm->nvm_data->bands[NL80211_BAND_5GHZ];
J
Johannes Berg 已提交
595

596 597 598 599
		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))
600
			hw->wiphy->bands[NL80211_BAND_5GHZ]->vht_cap.cap |=
601 602 603
				IEEE80211_VHT_CAP_SU_BEAMFORMER_CAPABLE;
	}

J
Johannes Berg 已提交
604 605
	hw->wiphy->hw_version = mvm->trans->hw_id;

606
	if (iwlmvm_mod_params.power_scheme != IWL_POWER_SCHEME_CAM)
J
Johannes Berg 已提交
607 608 609 610
		hw->wiphy->flags |= WIPHY_FLAG_PS_ON_BY_DEFAULT;
	else
		hw->wiphy->flags &= ~WIPHY_FLAG_PS_ON_BY_DEFAULT;

611
	hw->wiphy->max_sched_scan_reqs = 1;
612 613 614 615 616
	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;
617 618 619 620 621 622 623 624
	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;
625

J
Johannes Berg 已提交
626
	hw->wiphy->features |= NL80211_FEATURE_P2P_GO_CTWIN |
627
			       NL80211_FEATURE_LOW_PRIORITY_SCAN |
628
			       NL80211_FEATURE_P2P_GO_OPPPS |
629
			       NL80211_FEATURE_AP_MODE_CHAN_WIDTH_CHANGE |
630
			       NL80211_FEATURE_DYNAMIC_SMPS |
631 632
			       NL80211_FEATURE_STATIC_SMPS |
			       NL80211_FEATURE_SUPPORTS_WMM_ADMISSION;
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Johannes Berg 已提交
633

634 635
	if (fw_has_capa(&mvm->fw->ucode_capa,
			IWL_UCODE_TLV_CAPA_TXPOWER_INSERTION_SUPPORT))
636
		hw->wiphy->features |= NL80211_FEATURE_TX_POWER_INSERTION;
637 638
	if (fw_has_capa(&mvm->fw->ucode_capa,
			IWL_UCODE_TLV_CAPA_QUIET_PERIOD_SUPPORT))
639
		hw->wiphy->features |= NL80211_FEATURE_QUIET;
640

641 642
	if (fw_has_capa(&mvm->fw->ucode_capa,
			IWL_UCODE_TLV_CAPA_DS_PARAM_SET_IE_SUPPORT))
643 644 645
		hw->wiphy->features |=
			NL80211_FEATURE_DS_PARAM_SET_IE_IN_PROBES;

646 647
	if (fw_has_capa(&mvm->fw->ucode_capa,
			IWL_UCODE_TLV_CAPA_WFA_TPC_REP_IE_SUPPORT))
648 649
		hw->wiphy->features |= NL80211_FEATURE_WFA_TPC_IE_IN_PROBES;

650 651 652 653 654 655 656 657 658 659
	if (fw_has_api(&mvm->fw->ucode_capa,
		       IWL_UCODE_TLV_API_SCAN_TSF_REPORT)) {
		wiphy_ext_feature_set(hw->wiphy,
				      NL80211_EXT_FEATURE_SCAN_START_TIME);
		wiphy_ext_feature_set(hw->wiphy,
				      NL80211_EXT_FEATURE_BSS_PARENT_TSF);
		wiphy_ext_feature_set(hw->wiphy,
				      NL80211_EXT_FEATURE_SET_SCAN_DWELL);
	}

Z
Zamir, Roee 已提交
660 661 662 663 664 665 666 667 668 669 670
	if (iwl_mvm_is_oce_supported(mvm)) {
		wiphy_ext_feature_set(hw->wiphy,
			NL80211_EXT_FEATURE_ACCEPT_BCAST_PROBE_RESP);
		wiphy_ext_feature_set(hw->wiphy,
			NL80211_EXT_FEATURE_FILS_MAX_CHANNEL_TIME);
		wiphy_ext_feature_set(hw->wiphy,
			NL80211_EXT_FEATURE_OCE_PROBE_REQ_DEFERRAL_SUPPRESSION);
		wiphy_ext_feature_set(hw->wiphy,
			NL80211_EXT_FEATURE_OCE_PROBE_REQ_HIGH_TX_RATE);
	}

J
Johannes Berg 已提交
671 672 673
	mvm->rts_threshold = IEEE80211_MAX_RTS_THRESHOLD;

#ifdef CONFIG_PM_SLEEP
674 675 676 677
	if (iwl_mvm_is_d0i3_supported(mvm) &&
	    device_can_wakeup(mvm->trans->dev)) {
		mvm->wowlan.flags = WIPHY_WOWLAN_ANY;
		hw->wiphy->wowlan = &mvm->wowlan;
678 679
	}

680
	if (mvm->fw->img[IWL_UCODE_WOWLAN].num_sec &&
J
Johannes Berg 已提交
681 682 683
	    mvm->trans->ops->d3_suspend &&
	    mvm->trans->ops->d3_resume &&
	    device_can_wakeup(mvm->trans->dev)) {
684 685 686 687 688
		mvm->wowlan.flags |= WIPHY_WOWLAN_MAGIC_PKT |
				     WIPHY_WOWLAN_DISCONNECT |
				     WIPHY_WOWLAN_EAP_IDENTITY_REQ |
				     WIPHY_WOWLAN_RFKILL_RELEASE |
				     WIPHY_WOWLAN_NET_DETECT;
689
		if (!iwlwifi_mod_params.swcrypto)
690 691 692 693 694 695 696
			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;
697
		mvm->wowlan.max_nd_match_sets = IWL_SCAN_MAX_PROFILES;
698
		hw->wiphy->wowlan = &mvm->wowlan;
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Johannes Berg 已提交
699 700 701
	}
#endif

702 703 704 705 706
#ifdef CONFIG_IWLWIFI_BCAST_FILTERING
	/* assign default bcast filtering configuration */
	mvm->bcast_filters = iwl_mvm_default_bcast_filters;
#endif

J
Johannes Berg 已提交
707 708 709 710
	ret = iwl_mvm_leds_init(mvm);
	if (ret)
		return ret;

711 712
	if (fw_has_capa(&mvm->fw->ucode_capa,
			IWL_UCODE_TLV_CAPA_TDLS_SUPPORT)) {
A
Arik Nemtsov 已提交
713 714
		IWL_DEBUG_TDLS(mvm, "TDLS supported\n");
		hw->wiphy->flags |= WIPHY_FLAG_SUPPORTS_TDLS;
715
		ieee80211_hw_set(hw, TDLS_WIDER_BW);
A
Arik Nemtsov 已提交
716 717
	}

718 719
	if (fw_has_capa(&mvm->fw->ucode_capa,
			IWL_UCODE_TLV_CAPA_TDLS_CHANNEL_SWITCH)) {
720 721 722 723
		IWL_DEBUG_TDLS(mvm, "TDLS channel switch supported\n");
		hw->wiphy->features |= NL80211_FEATURE_TDLS_CHANNEL_SWITCH;
	}

724
	hw->netdev_features |= mvm->cfg->features;
725 726 727 728 729 730 731
	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;
	}
732

733 734 735
	ret = ieee80211_register_hw(mvm->hw);
	if (ret)
		iwl_mvm_leds_exit(mvm);
736
	mvm->init_status |= IWL_MVM_INIT_STATUS_REG_HW_INIT_COMPLETE;
737

738 739 740 741
	if (mvm->cfg->vht_mu_mimo_supported)
		wiphy_ext_feature_set(hw->wiphy,
				      NL80211_EXT_FEATURE_MU_MIMO_AIR_SNIFFER);

742
	return ret;
J
Johannes Berg 已提交
743 744
}

745 746 747 748 749 750 751 752 753 754 755 756 757 758 759 760 761 762 763 764 765 766 767 768
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);
769
	if (mvmsta->sta_id == IWL_MVM_INVALID_STA ||
770 771 772 773 774 775 776 777 778 779 780 781 782 783 784 785
	    mvmsta->sta_id != mvm->d0i3_ap_sta_id)
		goto out;

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

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

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

J
Johannes Berg 已提交
786 787 788 789 790
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);
791 792 793
	struct ieee80211_sta *sta = control->sta;
	struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
	struct ieee80211_hdr *hdr = (void *)skb->data;
J
Johannes Berg 已提交
794

795 796
	if (iwl_mvm_is_radio_killed(mvm)) {
		IWL_DEBUG_DROP(mvm, "Dropping - RF/CT KILL\n");
J
Johannes Berg 已提交
797 798 799
		goto drop;
	}

800
	if (info->hw_queue == IWL_MVM_OFFCHANNEL_QUEUE &&
801 802
	    !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
803 804
		goto drop;

805 806 807 808 809
	/* treat non-bufferable MMPDUs on AP interfaces as broadcast */
	if ((info->control.vif->type == NL80211_IFTYPE_AP ||
	     info->control.vif->type == NL80211_IFTYPE_ADHOC) &&
	    ieee80211_is_mgmt(hdr->frame_control) &&
	    !ieee80211_is_bufferable_mmpdu(hdr->frame_control))
810 811
		sta = NULL;

812 813 814 815 816 817 818 819 820 821 822 823 824 825 826
	/* If there is no sta, and it's not offchannel - send through AP */
	if (info->control.vif->type == NL80211_IFTYPE_STATION &&
	    info->hw_queue != IWL_MVM_OFFCHANNEL_QUEUE && !sta) {
		struct iwl_mvm_vif *mvmvif =
			iwl_mvm_vif_from_mac80211(info->control.vif);
		u8 ap_sta_id = READ_ONCE(mvmvif->ap_sta_id);

		if (ap_sta_id < IWL_MVM_STATION_COUNT) {
			/* mac80211 holds rcu read lock */
			sta = rcu_dereference(mvm->fw_id_to_mac_id[ap_sta_id]);
			if (IS_ERR_OR_NULL(sta))
				goto drop;
		}
	}

827
	if (sta) {
828 829
		if (iwl_mvm_defer_tx(mvm, sta, skb))
			return;
830
		if (iwl_mvm_tx_skb(mvm, skb, sta))
J
Johannes Berg 已提交
831 832 833 834 835 836 837 838 839 840 841
			goto drop;
		return;
	}

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

842 843 844 845 846 847 848 849 850 851 852 853 854 855 856 857 858 859
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;
}

860 861 862 863 864
#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);	\
865 866 867 868 869 870 871 872 873 874
	} 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;

875 876 877
	trig = iwl_fw_dbg_trigger_on(&mvm->fwrt, ieee80211_vif_to_wdev(vif),
				     FW_DBG_TRIGGER_BA);
	if (!trig)
878 879 880 881 882 883 884 885 886 887 888 889 890 891 892 893 894 895 896 897 898 899 900 901 902 903 904 905 906 907 908 909 910 911
		return;

	ba_trig = (void *)trig->data;

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

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

J
Johannes Berg 已提交
912 913
static int iwl_mvm_mac_ampdu_action(struct ieee80211_hw *hw,
				    struct ieee80211_vif *vif,
914
				    struct ieee80211_ampdu_params *params)
J
Johannes Berg 已提交
915 916 917
{
	struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
	int ret;
918
	bool tx_agg_ref = false;
919 920 921 922
	struct ieee80211_sta *sta = params->sta;
	enum ieee80211_ampdu_mlme_action action = params->action;
	u16 tid = params->tid;
	u16 *ssn = &params->ssn;
923
	u16 buf_size = params->buf_size;
924
	bool amsdu = params->amsdu;
925
	u16 timeout = params->timeout;
J
Johannes Berg 已提交
926 927 928 929 930 931 932

	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;

933
	/* return from D0i3 before starting a new Tx aggregation */
934 935 936 937 938 939
	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:
940
		/*
941 942 943 944 945 946
		 * 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.
947
		 */
948 949 950 951 952
		ret = iwl_mvm_ref_sync(mvm, IWL_MVM_REF_TX_AGG);
		if (ret)
			return ret;

		tx_agg_ref = true;
953 954 955
		break;
	default:
		break;
956 957
	}

J
Johannes Berg 已提交
958 959 960 961
	mutex_lock(&mvm->mutex);

	switch (action) {
	case IEEE80211_AMPDU_RX_START:
962 963 964 965 966 967 968 969 970 971
		if (iwl_mvm_vif_from_mac80211(vif)->ap_sta_id ==
				iwl_mvm_sta_from_mac80211(sta)->sta_id) {
			struct iwl_mvm_vif *mvmvif;
			u16 macid = iwl_mvm_vif_from_mac80211(vif)->id;
			struct iwl_mvm_tcm_mac *mdata = &mvm->tcm.data[macid];

			mdata->opened_rx_ba_sessions = true;
			mvmvif = iwl_mvm_vif_from_mac80211(vif);
			cancel_delayed_work(&mvmvif->uapsd_nonagg_detected_wk);
		}
972
		if (!iwl_enable_rx_ampdu(mvm->cfg)) {
J
Johannes Berg 已提交
973 974 975
			ret = -EINVAL;
			break;
		}
976 977
		ret = iwl_mvm_sta_rx_agg(mvm, sta, tid, *ssn, true, buf_size,
					 timeout);
J
Johannes Berg 已提交
978 979
		break;
	case IEEE80211_AMPDU_RX_STOP:
980 981
		ret = iwl_mvm_sta_rx_agg(mvm, sta, tid, 0, false, buf_size,
					 timeout);
J
Johannes Berg 已提交
982 983
		break;
	case IEEE80211_AMPDU_TX_START:
984
		if (!iwl_enable_tx_ampdu(mvm->cfg)) {
985 986 987
			ret = -EINVAL;
			break;
		}
J
Johannes Berg 已提交
988 989 990
		ret = iwl_mvm_sta_tx_agg_start(mvm, vif, sta, tid, ssn);
		break;
	case IEEE80211_AMPDU_TX_STOP_CONT:
991 992
		ret = iwl_mvm_sta_tx_agg_stop(mvm, vif, sta, tid);
		break;
J
Johannes Berg 已提交
993 994
	case IEEE80211_AMPDU_TX_STOP_FLUSH:
	case IEEE80211_AMPDU_TX_STOP_FLUSH_CONT:
995
		ret = iwl_mvm_sta_tx_agg_flush(mvm, vif, sta, tid);
J
Johannes Berg 已提交
996 997
		break;
	case IEEE80211_AMPDU_TX_OPERATIONAL:
998 999
		ret = iwl_mvm_sta_tx_agg_oper(mvm, vif, sta, tid,
					      buf_size, amsdu);
J
Johannes Berg 已提交
1000 1001 1002 1003 1004 1005
		break;
	default:
		WARN_ON_ONCE(1);
		ret = -EINVAL;
		break;
	}
1006 1007 1008 1009 1010 1011 1012 1013 1014 1015

	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
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1016 1017
	mutex_unlock(&mvm->mutex);

1018 1019 1020 1021 1022 1023 1024
	/*
	 * 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
1025 1026 1027 1028 1029 1030 1031 1032 1033 1034
	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;
1035
	mvmvif->ap_sta_id = IWL_MVM_INVALID_STA;
J
Johannes Berg 已提交
1036 1037 1038 1039 1040

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

1041
	mvmvif->phy_ctxt = NULL;
1042
	memset(&mvmvif->bf_data, 0, sizeof(mvmvif->bf_data));
1043
	memset(&mvmvif->probe_resp_data, 0, sizeof(mvmvif->probe_resp_data));
J
Johannes Berg 已提交
1044 1045 1046 1047
}

static void iwl_mvm_restart_cleanup(struct iwl_mvm *mvm)
{
1048 1049 1050 1051
	/* 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
	 */
1052
	if (!test_and_clear_bit(IWL_MVM_STATUS_D3_RECONFIG, &mvm->status)) {
1053 1054
		mvm->fwrt.dump.desc = &iwl_dump_desc_assert;
		iwl_fw_error_dump(&mvm->fwrt);
1055
	}
1056

1057 1058 1059 1060 1061
	/* 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);

1062
	iwl_mvm_stop_device(mvm);
J
Johannes Berg 已提交
1063

1064
	mvm->scan_status = 0;
1065
	mvm->ps_disabled = false;
1066
	mvm->calibrating = false;
J
Johannes Berg 已提交
1067 1068

	/* just in case one was running */
1069
	iwl_mvm_cleanup_roc_te(mvm);
J
Johannes Berg 已提交
1070 1071
	ieee80211_remain_on_channel_expired(mvm->hw);

1072 1073 1074 1075 1076
	/*
	 * 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
1077

1078
	mvm->p2p_device_vif = NULL;
1079
	mvm->d0i3_ap_sta_id = IWL_MVM_INVALID_STA;
1080 1081

	iwl_mvm_reset_phy_ctxts(mvm);
1082
	memset(mvm->fw_key_table, 0, sizeof(mvm->fw_key_table));
1083
	memset(mvm->sta_deferred_frames, 0, sizeof(mvm->sta_deferred_frames));
1084 1085
	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
1086 1087 1088

	ieee80211_wake_queues(mvm->hw);

1089 1090 1091
	/* clear any stale d0i3 state */
	clear_bit(IWL_MVM_STATUS_IN_D0I3, &mvm->status);

J
Johannes Berg 已提交
1092
	mvm->vif_count = 0;
1093
	mvm->rx_ba_sessions = 0;
1094
	mvm->fwrt.dump.conf = FW_DBG_INVALID;
1095
	mvm->monitor_on = false;
1096 1097 1098

	/* keep statistics ticking */
	iwl_mvm_accu_radio_stats(mvm);
J
Johannes Berg 已提交
1099 1100
}

1101
int __iwl_mvm_mac_start(struct iwl_mvm *mvm)
J
Johannes Berg 已提交
1102 1103 1104
{
	int ret;

1105
	lockdep_assert_held(&mvm->mutex);
J
Johannes Berg 已提交
1106

1107 1108 1109 1110 1111 1112 1113
	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);
1114
		/* Clean up some internal and mac80211 state on restart */
J
Johannes Berg 已提交
1115
		iwl_mvm_restart_cleanup(mvm);
1116 1117 1118 1119 1120 1121 1122 1123 1124
	} 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
1125
	ret = iwl_mvm_up(mvm);
1126 1127 1128 1129 1130 1131 1132

	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);
1133
#ifdef CONFIG_PM
1134
		iwl_mvm_d0i3_enable_tx(mvm, NULL);
1135
#endif
1136 1137
	}

1138 1139 1140 1141 1142 1143 1144 1145
	return ret;
}

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

1146 1147 1148 1149 1150 1151 1152 1153 1154 1155 1156 1157 1158
	/* 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);
	}

1159 1160
	mutex_lock(&mvm->mutex);
	ret = __iwl_mvm_mac_start(mvm);
J
Johannes Berg 已提交
1161 1162 1163 1164 1165
	mutex_unlock(&mvm->mutex);

	return ret;
}

1166
static void iwl_mvm_restart_complete(struct iwl_mvm *mvm)
J
Johannes Berg 已提交
1167 1168 1169 1170 1171 1172
{
	int ret;

	mutex_lock(&mvm->mutex);

	clear_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status);
1173
#ifdef CONFIG_PM
1174
	iwl_mvm_d0i3_enable_tx(mvm, NULL);
1175
#endif
1176
	ret = iwl_mvm_update_quotas(mvm, true, NULL);
J
Johannes Berg 已提交
1177 1178 1179 1180
	if (ret)
		IWL_ERR(mvm, "Failed to update quotas after restart (%d)\n",
			ret);

1181 1182 1183
	/* allow transport/FW low power modes */
	iwl_mvm_unref(mvm, IWL_MVM_REF_UCODE_DOWN);

1184 1185 1186 1187 1188 1189
	/*
	 * 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
1190 1191 1192
	mutex_unlock(&mvm->mutex);
}

1193 1194
static void iwl_mvm_resume_complete(struct iwl_mvm *mvm)
{
1195 1196 1197 1198 1199 1200 1201
	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");
1202 1203
}

1204 1205 1206 1207 1208 1209 1210 1211 1212 1213 1214
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:
1215
		iwl_mvm_resume_complete(mvm);
1216 1217 1218 1219
		break;
	}
}

1220
void __iwl_mvm_mac_stop(struct iwl_mvm *mvm)
J
Johannes Berg 已提交
1221
{
1222
	lockdep_assert_held(&mvm->mutex);
1223

1224 1225 1226 1227 1228
	/* 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
1229 1230 1231 1232 1233 1234
	/* 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.
	 */
1235
	flush_work(&mvm->roc_done_wk);
J
Johannes Berg 已提交
1236

1237
	iwl_mvm_stop_device(mvm);
J
Johannes Berg 已提交
1238 1239 1240 1241 1242

	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 */
1243
	iwl_mvm_del_aux_sta(mvm);
J
Johannes Berg 已提交
1244

1245
	/*
1246 1247 1248
	 * Clear IN_HW_RESTART and HW_RESTART_REQUESTED flag when stopping the
	 * hw (as restart_complete() won't be called in this case) and mac80211
	 * won't execute the restart.
1249 1250
	 * But make sure to cleanup interfaces that have gone down before/during
	 * HW restart was requested.
1251
	 */
1252 1253 1254
	if (test_and_clear_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status) ||
	    test_and_clear_bit(IWL_MVM_STATUS_HW_RESTART_REQUESTED,
			       &mvm->status))
1255 1256
		ieee80211_iterate_interfaces(mvm->hw, 0,
					     iwl_mvm_cleanup_iterator, mvm);
1257

1258 1259 1260
	/* 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.
	 */
1261
	if (fw_has_capa(&mvm->fw->ucode_capa, IWL_UCODE_TLV_CAPA_UMAC_SCAN)) {
1262 1263
		int i;

1264
		for (i = 0; i < mvm->max_scans; i++) {
1265 1266 1267 1268
			if (WARN_ONCE(mvm->scan_uid_status[i],
				      "UMAC scan UID %d status was not cleaned\n",
				      i))
				mvm->scan_uid_status[i] = 0;
1269 1270
		}
	}
1271
}
1272

1273 1274 1275 1276 1277 1278
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);
1279
	flush_work(&mvm->add_stream_wk);
1280 1281 1282 1283 1284

	/*
	 * 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
1285
	 * debugfs files causes the firmware dump to be triggered, and if we
1286 1287 1288 1289 1290
	 * 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);

1291
	iwl_fw_cancel_dump(&mvm->fwrt);
1292
	cancel_delayed_work_sync(&mvm->cs_tx_unblock_dwork);
1293
	cancel_delayed_work_sync(&mvm->scan_timeout_dwork);
1294
	iwl_fw_free_dump_desc(&mvm->fwrt);
1295 1296 1297

	mutex_lock(&mvm->mutex);
	__iwl_mvm_mac_stop(mvm);
J
Johannes Berg 已提交
1298 1299 1300 1301 1302 1303 1304 1305 1306
	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);
}

1307 1308 1309 1310 1311 1312 1313 1314 1315 1316 1317 1318 1319 1320
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;
}

1321 1322 1323
static int iwl_mvm_set_tx_power(struct iwl_mvm *mvm, struct ieee80211_vif *vif,
				s16 tx_power)
{
1324 1325 1326 1327 1328 1329 1330
	int len;
	union {
		struct iwl_dev_tx_power_cmd v5;
		struct iwl_dev_tx_power_cmd_v4 v4;
	} cmd = {
		.v5.v3.set_mode = cpu_to_le32(IWL_TX_POWER_MODE_SET_MAC),
		.v5.v3.mac_context_id =
1331
			cpu_to_le32(iwl_mvm_vif_from_mac80211(vif)->id),
1332
		.v5.v3.pwr_restriction = cpu_to_le16(8 * tx_power),
1333 1334 1335
	};

	if (tx_power == IWL_DEFAULT_MAX_TX_POWER)
1336
		cmd.v5.v3.pwr_restriction = cpu_to_le16(IWL_DEV_MAX_TX_POWER);
1337

1338 1339 1340 1341 1342 1343 1344 1345
	if (fw_has_api(&mvm->fw->ucode_capa,
		       IWL_UCODE_TLV_API_REDUCE_TX_POWER))
		len = sizeof(cmd.v5);
	else if (fw_has_capa(&mvm->fw->ucode_capa,
			     IWL_UCODE_TLV_CAPA_TX_POWER_ACK))
		len = sizeof(cmd.v4);
	else
		len = sizeof(cmd.v4.v3);
1346 1347

	return iwl_mvm_send_cmd_pdu(mvm, REDUCE_TX_POWER_CMD, 0, len, &cmd);
1348 1349
}

J
Johannes Berg 已提交
1350 1351 1352 1353 1354 1355 1356
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;

1357
	mvmvif->mvm = mvm;
1358
	RCU_INIT_POINTER(mvmvif->probe_resp_data, NULL);
1359

1360 1361 1362 1363 1364 1365 1366 1367 1368
	/*
	 * 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
1369 1370 1371 1372 1373 1374 1375 1376
	/*
	 * 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);

1377 1378 1379 1380 1381
	/* 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;

1382
	/* Allocate resources for the MAC context, and add it to the fw  */
J
Johannes Berg 已提交
1383 1384 1385 1386
	ret = iwl_mvm_mac_ctxt_init(mvm, vif);
	if (ret)
		goto out_unlock;

1387
	/* Counting number of interfaces is needed for legacy PM */
1388 1389 1390
	if (vif->type != NL80211_IFTYPE_P2P_DEVICE)
		mvm->vif_count++;

J
Johannes Berg 已提交
1391 1392 1393 1394 1395 1396 1397 1398 1399 1400 1401
	/*
	 * 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
1402 1403
	if (vif->type == NL80211_IFTYPE_AP ||
	    vif->type == NL80211_IFTYPE_ADHOC) {
1404
		ret = iwl_mvm_alloc_bcast_sta(mvm, vif);
J
Johannes Berg 已提交
1405 1406 1407 1408 1409
		if (ret) {
			IWL_ERR(mvm, "Failed to allocate bcast sta\n");
			goto out_release;
		}

1410 1411 1412 1413 1414 1415 1416 1417 1418
		/*
		 * 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;
1419

1420
		iwl_mvm_vif_dbgfs_register(mvm, vif);
J
Johannes Berg 已提交
1421 1422 1423
		goto out_unlock;
	}

1424 1425
	mvmvif->features |= hw->netdev_features;

J
Johannes Berg 已提交
1426 1427 1428 1429
	ret = iwl_mvm_mac_ctxt_add(mvm, vif);
	if (ret)
		goto out_release;

1430
	ret = iwl_mvm_power_update_mac(mvm);
1431
	if (ret)
1432
		goto out_remove_mac;
J
Johannes Berg 已提交
1433

1434
	/* beacon filtering */
E
Emmanuel Grumbach 已提交
1435
	ret = iwl_mvm_disable_beacon_filter(mvm, vif, 0);
1436 1437 1438
	if (ret)
		goto out_remove_mac;

1439
	if (!mvm->bf_allowed_vif &&
1440
	    vif->type == NL80211_IFTYPE_STATION && !vif->p2p) {
1441
		mvm->bf_allowed_vif = mvmvif;
1442 1443
		vif->driver_flags |= IEEE80211_VIF_BEACON_FILTER |
				     IEEE80211_VIF_SUPPORTS_CQM_RSSI;
1444 1445
	}

J
Johannes Berg 已提交
1446 1447 1448 1449 1450 1451 1452
	/*
	 * 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) {

1453 1454 1455
		mvmvif->phy_ctxt = iwl_mvm_get_free_phy_ctxt(mvm);
		if (!mvmvif->phy_ctxt) {
			ret = -ENOSPC;
1456
			goto out_free_bf;
1457
		}
J
Johannes Berg 已提交
1458

1459
		iwl_mvm_phy_ctxt_ref(mvm, mvmvif->phy_ctxt);
J
Johannes Berg 已提交
1460 1461
		ret = iwl_mvm_binding_add_vif(mvm, vif);
		if (ret)
1462
			goto out_unref_phy;
J
Johannes Berg 已提交
1463

1464
		ret = iwl_mvm_add_p2p_bcast_sta(mvm, vif);
J
Johannes Berg 已提交
1465 1466 1467 1468 1469 1470 1471 1472
		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;
	}

1473 1474
	iwl_mvm_tcm_add_vif(mvm, vif);

1475 1476 1477
	if (vif->type == NL80211_IFTYPE_MONITOR)
		mvm->monitor_on = true;

1478
	iwl_mvm_vif_dbgfs_register(mvm, vif);
J
Johannes Berg 已提交
1479 1480 1481 1482
	goto out_unlock;

 out_unbind:
	iwl_mvm_binding_remove_vif(mvm, vif);
1483
 out_unref_phy:
1484
	iwl_mvm_phy_ctxt_unref(mvm, mvmvif->phy_ctxt);
1485 1486 1487
 out_free_bf:
	if (mvm->bf_allowed_vif == mvmvif) {
		mvm->bf_allowed_vif = NULL;
1488 1489
		vif->driver_flags &= ~(IEEE80211_VIF_BEACON_FILTER |
				       IEEE80211_VIF_SUPPORTS_CQM_RSSI);
1490
	}
J
Johannes Berg 已提交
1491 1492 1493 1494
 out_remove_mac:
	mvmvif->phy_ctxt = NULL;
	iwl_mvm_mac_ctxt_remove(mvm, vif);
 out_release:
1495 1496
	if (vif->type != NL80211_IFTYPE_P2P_DEVICE)
		mvm->vif_count--;
J
Johannes Berg 已提交
1497 1498 1499
 out_unlock:
	mutex_unlock(&mvm->mutex);

1500 1501
	iwl_mvm_unref(mvm, IWL_MVM_REF_ADD_IF);

J
Johannes Berg 已提交
1502 1503 1504
	return ret;
}

1505 1506
static void iwl_mvm_prepare_mac_removal(struct iwl_mvm *mvm,
					struct ieee80211_vif *vif)
J
Johannes Berg 已提交
1507 1508 1509 1510 1511 1512 1513 1514 1515
{
	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);
	}
1516 1517 1518 1519 1520 1521 1522
}

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);
1523
	struct iwl_probe_resp_data *probe_data;
1524 1525

	iwl_mvm_prepare_mac_removal(mvm, vif);
J
Johannes Berg 已提交
1526

1527 1528 1529 1530
	if (!(vif->type == NL80211_IFTYPE_AP ||
	      vif->type == NL80211_IFTYPE_ADHOC))
		iwl_mvm_tcm_rm_vif(mvm, vif);

J
Johannes Berg 已提交
1531 1532
	mutex_lock(&mvm->mutex);

1533 1534 1535 1536 1537 1538
	probe_data = rcu_dereference_protected(mvmvif->probe_resp_data,
					       lockdep_is_held(&mvm->mutex));
	RCU_INIT_POINTER(mvmvif->probe_resp_data, NULL);
	if (probe_data)
		kfree_rcu(probe_data, rcu_head);

1539 1540
	if (mvm->bf_allowed_vif == mvmvif) {
		mvm->bf_allowed_vif = NULL;
1541 1542
		vif->driver_flags &= ~(IEEE80211_VIF_BEACON_FILTER |
				       IEEE80211_VIF_SUPPORTS_CQM_RSSI);
1543 1544
	}

1545 1546
	iwl_mvm_vif_dbgfs_clean(mvm, vif);

J
Johannes Berg 已提交
1547 1548
	/*
	 * For AP/GO interface, the tear down of the resources allocated to the
1549
	 * interface is be handled as part of the stop_ap flow.
J
Johannes Berg 已提交
1550
	 */
J
Johannes Berg 已提交
1551 1552
	if (vif->type == NL80211_IFTYPE_AP ||
	    vif->type == NL80211_IFTYPE_ADHOC) {
1553 1554 1555 1556 1557 1558
#ifdef CONFIG_NL80211_TESTMODE
		if (vif == mvm->noa_vif) {
			mvm->noa_vif = NULL;
			mvm->noa_duration = 0;
		}
#endif
1559
		iwl_mvm_dealloc_int_sta(mvm, &mvmvif->mcast_sta);
1560
		iwl_mvm_dealloc_bcast_sta(mvm, vif);
J
Johannes Berg 已提交
1561 1562 1563 1564 1565
		goto out_release;
	}

	if (vif->type == NL80211_IFTYPE_P2P_DEVICE) {
		mvm->p2p_device_vif = NULL;
1566
		iwl_mvm_rm_p2p_bcast_sta(mvm, vif);
J
Johannes Berg 已提交
1567
		iwl_mvm_binding_remove_vif(mvm, vif);
1568
		iwl_mvm_phy_ctxt_unref(mvm, mvmvif->phy_ctxt);
J
Johannes Berg 已提交
1569 1570 1571
		mvmvif->phy_ctxt = NULL;
	}

1572
	if (mvm->vif_count && vif->type != NL80211_IFTYPE_P2P_DEVICE)
J
Johannes Berg 已提交
1573
		mvm->vif_count--;
1574

1575
	iwl_mvm_power_update_mac(mvm);
J
Johannes Berg 已提交
1576 1577
	iwl_mvm_mac_ctxt_remove(mvm, vif);

1578 1579 1580
	if (vif->type == NL80211_IFTYPE_MONITOR)
		mvm->monitor_on = false;

J
Johannes Berg 已提交
1581 1582 1583 1584 1585
out_release:
	mutex_unlock(&mvm->mutex);
}

static int iwl_mvm_mac_config(struct ieee80211_hw *hw, u32 changed)
1586
{
J
Johannes Berg 已提交
1587 1588 1589
	return 0;
}

1590 1591 1592 1593 1594 1595 1596 1597 1598 1599 1600
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;
1601 1602 1603 1604 1605
	struct iwl_host_cmd hcmd = {
		.id = MCAST_FILTER_CMD,
		.flags = CMD_ASYNC,
		.dataflags[0] = IWL_HCMD_DFL_NOCOPY,
	};
1606 1607 1608 1609 1610 1611 1612 1613 1614 1615 1616 1617 1618 1619
	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);

1620 1621 1622 1623
	hcmd.len[0] = len;
	hcmd.data[0] = cmd;

	ret = iwl_mvm_send_cmd(mvm, &hcmd);
1624 1625 1626 1627 1628 1629 1630 1631
	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,
1632 1633
	};

1634 1635 1636 1637 1638
	lockdep_assert_held(&mvm->mutex);

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

1639
	ieee80211_iterate_active_interfaces_atomic(
1640 1641
		mvm->hw, IEEE80211_IFACE_ITER_NORMAL,
		iwl_mvm_mc_iface_iterator, &iter_data);
1642 1643
}

1644 1645
static u64 iwl_mvm_prepare_multicast(struct ieee80211_hw *hw,
				     struct netdev_hw_addr_list *mc_list)
J
Johannes Berg 已提交
1646
{
1647 1648 1649
	struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
	struct iwl_mcast_filter_cmd *cmd;
	struct netdev_hw_addr *addr;
1650 1651
	int addr_count;
	bool pass_all;
1652 1653
	int len;

1654 1655 1656 1657
	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)
1658 1659 1660 1661 1662 1663 1664 1665 1666 1667 1668 1669 1670 1671 1672 1673 1674 1675 1676 1677 1678
		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
1679 1680 1681 1682 1683 1684 1685
}

static void iwl_mvm_configure_filter(struct ieee80211_hw *hw,
				     unsigned int changed_flags,
				     unsigned int *total_flags,
				     u64 multicast)
{
1686 1687
	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
1688

1689
	mutex_lock(&mvm->mutex);
1690

1691 1692 1693
	/* replace previous configuration */
	kfree(mvm->mcast_filter_cmd);
	mvm->mcast_filter_cmd = cmd;
1694

1695 1696
	if (!cmd)
		goto out;
1697

1698 1699 1700 1701 1702 1703
	if (changed_flags & FIF_ALLMULTI)
		cmd->pass_all = !!(*total_flags & FIF_ALLMULTI);

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

1704 1705 1706 1707
	iwl_mvm_recalc_multicast(mvm);
out:
	mutex_unlock(&mvm->mutex);
	*total_flags = 0;
1708 1709
}

1710 1711 1712 1713 1714 1715 1716 1717 1718 1719 1720 1721 1722 1723 1724 1725 1726 1727 1728 1729 1730
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);
}

1731 1732 1733 1734 1735 1736 1737 1738 1739 1740 1741 1742 1743 1744 1745 1746 1747 1748 1749 1750 1751 1752 1753
#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;

1754 1755 1756 1757 1758 1759 1760 1761 1762 1763 1764 1765 1766 1767 1768 1769
		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;
1770 1771 1772 1773 1774 1775 1776 1777 1778 1779 1780 1781 1782 1783 1784 1785 1786 1787 1788
		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];

1789 1790 1791 1792 1793 1794
	/*
	 * enable filtering only for associated stations, but not for P2P
	 * Clients
	 */
	if (vif->type != NL80211_IFTYPE_STATION || vif->p2p ||
	    !vif->bss_conf.assoc)
1795 1796 1797 1798 1799 1800 1801 1802 1803 1804 1805 1806 1807 1808 1809 1810 1811 1812 1813 1814 1815 1816 1817 1818 1819 1820 1821 1822 1823 1824 1825 1826 1827 1828
		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++;
	}
}

1829 1830
bool iwl_mvm_bcast_filter_build_cmd(struct iwl_mvm *mvm,
				    struct iwl_bcast_filter_cmd *cmd)
1831 1832 1833
{
	struct iwl_bcast_iter_data iter_data = {
		.mvm = mvm,
1834
		.cmd = cmd,
1835 1836
	};

1837 1838 1839
	if (IWL_MVM_FW_BCAST_FILTER_PASS_ALL)
		return false;

1840 1841 1842 1843 1844 1845 1846 1847 1848 1849 1850 1851 1852 1853
	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
1854 1855 1856

	/* if no filters are configured, do nothing */
	if (!mvm->bcast_filters)
1857
		return false;
1858 1859 1860 1861 1862 1863

	/* 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);

1864 1865
	return true;
}
1866 1867

static int iwl_mvm_configure_bcast_filter(struct iwl_mvm *mvm)
1868 1869 1870 1871 1872 1873 1874 1875 1876
{
	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
1877
	return iwl_mvm_send_cmd_pdu(mvm, BCAST_FILTER_CMD, 0,
1878 1879 1880
				    sizeof(cmd), &cmd);
}
#else
1881
static inline int iwl_mvm_configure_bcast_filter(struct iwl_mvm *mvm)
1882 1883 1884 1885 1886
{
	return 0;
}
#endif

1887 1888 1889 1890 1891 1892 1893 1894 1895 1896 1897 1898 1899 1900 1901 1902
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);
}

1903 1904 1905 1906 1907 1908 1909 1910 1911 1912 1913 1914 1915 1916 1917 1918 1919 1920 1921 1922 1923 1924 1925 1926 1927 1928 1929 1930
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);
}

1931 1932 1933 1934 1935 1936 1937 1938 1939 1940 1941 1942 1943 1944 1945 1946 1947 1948 1949 1950 1951 1952 1953 1954 1955 1956 1957 1958 1959 1960 1961 1962 1963 1964 1965 1966 1967 1968 1969 1970 1971 1972 1973 1974 1975 1976 1977 1978 1979 1980 1981 1982 1983 1984 1985 1986 1987 1988 1989 1990 1991 1992 1993 1994 1995 1996 1997 1998 1999 2000 2001 2002 2003 2004 2005 2006 2007 2008 2009 2010 2011 2012 2013 2014 2015 2016 2017 2018 2019 2020 2021 2022 2023 2024 2025 2026 2027 2028 2029 2030 2031 2032 2033 2034 2035 2036 2037 2038 2039 2040 2041 2042 2043 2044 2045 2046 2047 2048 2049 2050 2051 2052 2053 2054 2055 2056 2057 2058 2059 2060 2061 2062 2063 2064 2065 2066 2067 2068 2069 2070 2071 2072 2073 2074 2075 2076 2077 2078 2079 2080 2081 2082 2083 2084 2085 2086 2087 2088 2089 2090 2091 2092 2093 2094 2095 2096 2097 2098 2099 2100 2101 2102 2103 2104 2105 2106 2107 2108 2109 2110 2111 2112 2113 2114
static u8 iwl_mvm_he_get_ppe_val(u8 *ppe, u8 ppe_pos_bit)
{
	u8 byte_num = ppe_pos_bit / 8;
	u8 bit_num = ppe_pos_bit % 8;
	u8 residue_bits;
	u8 res;

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

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

	residue_bits = 8 - bit_num;

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

	return res;
}

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

	rcu_read_lock();

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

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

	flags = 0;

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

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

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

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

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

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

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

		flags |= STA_CTXT_HE_PACKET_EXT;
	}
	rcu_read_unlock();

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

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

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

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

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

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

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

	/* TODO: support Multi BSSID IE */

	sta_ctxt_cmd.flags = cpu_to_le32(flags);

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

J
Johannes Berg 已提交
2115 2116 2117 2118 2119 2120 2121 2122
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;

2123 2124 2125 2126 2127
	/*
	 * 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.
	 */
2128
	if (changes & BSS_CHANGED_ASSOC && bss_conf->assoc) {
2129 2130
		if (vif->bss_conf.he_support &&
		    !iwlwifi_mod_params.disable_11ax)
2131 2132
			iwl_mvm_cfg_he_sta(mvm, vif, mvmvif->ap_sta_id);

2133
		iwl_mvm_mac_ctxt_recalc_tsf_id(mvm, vif);
2134
	}
2135

2136 2137 2138 2139 2140 2141 2142 2143 2144 2145
	/*
	 * 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
2146 2147 2148
	if (ret)
		IWL_ERR(mvm, "failed to update MAC %pM\n", vif->addr);

2149 2150 2151 2152
	/* 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
2153 2154
	if (changes & BSS_CHANGED_ASSOC) {
		if (bss_conf->assoc) {
2155 2156 2157 2158 2159
			/* 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
2160
			/* add quota for this interface */
2161
			ret = iwl_mvm_update_quotas(mvm, true, NULL);
J
Johannes Berg 已提交
2162 2163 2164 2165
			if (ret) {
				IWL_ERR(mvm, "failed to update quotas\n");
				return;
			}
2166 2167 2168 2169 2170 2171 2172 2173 2174 2175 2176 2177 2178 2179 2180 2181 2182 2183 2184

			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,
2185
							5 * dur, false);
2186
			}
2187 2188

			iwl_mvm_sf_update(mvm, vif, false);
2189
			iwl_mvm_power_vif_assoc(mvm, vif);
2190
			if (vif->p2p) {
2191
				iwl_mvm_ref(mvm, IWL_MVM_REF_P2P_CLIENT);
2192 2193 2194 2195
				iwl_mvm_update_smps(mvm, vif,
						    IWL_MVM_SMPS_REQ_PROT,
						    IEEE80211_SMPS_DYNAMIC);
			}
2196
		} else if (mvmvif->ap_sta_id != IWL_MVM_INVALID_STA) {
2197 2198 2199 2200 2201 2202 2203
			/*
			 * 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");

2204 2205 2206 2207 2208 2209 2210 2211 2212 2213 2214 2215 2216 2217 2218 2219 2220 2221 2222 2223 2224 2225 2226 2227 2228
			/*
			 * 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;
			}
2229

J
Johannes Berg 已提交
2230
			/* remove quota for this interface */
2231
			ret = iwl_mvm_update_quotas(mvm, false, NULL);
J
Johannes Berg 已提交
2232 2233
			if (ret)
				IWL_ERR(mvm, "failed to update quotas\n");
2234 2235 2236

			if (vif->p2p)
				iwl_mvm_unref(mvm, IWL_MVM_REF_P2P_CLIENT);
2237 2238 2239 2240 2241 2242 2243

			/* 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
2244
		}
2245

2246 2247
		/*
		 * The firmware tracks the MU-MIMO group on its own.
2248
		 * However, on HW restart we should restore this data.
2249 2250
		 */
		if (test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status) &&
2251
		    (changes & BSS_CHANGED_MU_GROUPS) && vif->mu_mimo_owner) {
2252 2253 2254 2255 2256 2257
			ret = iwl_mvm_update_mu_groups(mvm, vif);
			if (ret)
				IWL_ERR(mvm,
					"failed to update VHT MU_MIMO groups\n");
		}

2258
		iwl_mvm_recalc_multicast(mvm);
2259
		iwl_mvm_configure_bcast_filter(mvm);
2260

2261 2262 2263
		/* reset rssi values */
		mvmvif->bf_data.ave_beacon_signal = 0;

2264
		iwl_mvm_bt_coex_vif_change(mvm);
2265 2266
		iwl_mvm_update_smps(mvm, vif, IWL_MVM_SMPS_REQ_TT,
				    IEEE80211_SMPS_AUTOMATIC);
2267 2268 2269
		if (fw_has_capa(&mvm->fw->ucode_capa,
				IWL_UCODE_TLV_CAPA_UMAC_SCAN))
			iwl_mvm_config_scan(mvm);
2270 2271 2272
	}

	if (changes & BSS_CHANGED_BEACON_INFO) {
2273
		/*
2274
		 * We received a beacon from the associated AP so
2275 2276
		 * remove the session protection.
		 */
2277
		iwl_mvm_stop_session_protection(mvm, vif);
2278 2279 2280 2281 2282

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

2283 2284 2285 2286 2287 2288
	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)) {
2289 2290 2291 2292 2293
		ret = iwl_mvm_power_update_mac(mvm);
		if (ret)
			IWL_ERR(mvm, "failed to update power mode\n");
	}

2294 2295 2296 2297 2298
	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);
	}
2299 2300

	if (changes & BSS_CHANGED_CQM) {
2301
		IWL_DEBUG_MAC80211(mvm, "cqm info_changed\n");
2302 2303
		/* reset cqm events tracking */
		mvmvif->bf_data.last_cqm_event = 0;
2304 2305 2306 2307 2308 2309
		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");
		}
2310
	}
2311 2312

	if (changes & BSS_CHANGED_ARP_FILTER) {
2313
		IWL_DEBUG_MAC80211(mvm, "arp filter changed\n");
2314
		iwl_mvm_configure_bcast_filter(mvm);
2315
	}
J
Johannes Berg 已提交
2316 2317
}

J
Johannes Berg 已提交
2318 2319
static int iwl_mvm_start_ap_ibss(struct ieee80211_hw *hw,
				 struct ieee80211_vif *vif)
J
Johannes Berg 已提交
2320 2321 2322 2323 2324
{
	struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
	struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
	int ret;

2325 2326 2327 2328 2329 2330 2331 2332
	/*
	 * 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
2333 2334 2335 2336 2337 2338 2339
	mutex_lock(&mvm->mutex);

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

2340 2341 2342 2343 2344 2345 2346
	/*
	 * 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);

2347 2348
	mvmvif->ap_assoc_sta_count = 0;

J
Johannes Berg 已提交
2349 2350 2351 2352 2353 2354 2355 2356 2357 2358
	/* 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;

2359 2360 2361 2362 2363 2364 2365 2366 2367 2368 2369 2370 2371 2372 2373 2374 2375 2376 2377 2378 2379 2380 2381 2382 2383
	/*
	 * This is not very nice, but the simplest:
	 * For older FWs adding the mcast sta before the bcast station may
	 * cause assert 0x2b00.
	 * This is fixed in later FW so make the order of removal depend on
	 * the TLV
	 */
	if (fw_has_api(&mvm->fw->ucode_capa, IWL_UCODE_TLV_API_STA_TYPE)) {
		ret = iwl_mvm_add_mcast_sta(mvm, vif);
		if (ret)
			goto out_unbind;
		/*
		 * Send the bcast station. At this stage the TBTT and DTIM time
		 * events are added and applied to the scheduler
		 */
		ret = iwl_mvm_send_add_bcast_sta(mvm, vif);
		if (ret) {
			iwl_mvm_rm_mcast_sta(mvm, vif);
			goto out_unbind;
		}
	} else {
		/*
		 * Send the bcast station. At this stage the TBTT and DTIM time
		 * events are added and applied to the scheduler
		 */
2384
		ret = iwl_mvm_send_add_bcast_sta(mvm, vif);
2385 2386
		if (ret)
			goto out_unbind;
2387
		ret = iwl_mvm_add_mcast_sta(mvm, vif);
2388 2389 2390 2391 2392
		if (ret) {
			iwl_mvm_send_rm_bcast_sta(mvm, vif);
			goto out_unbind;
		}
	}
2393

2394 2395 2396
	/* must be set before quota calculations */
	mvmvif->ap_ibss_active = true;

2397 2398 2399 2400 2401 2402
	if (vif->type == NL80211_IFTYPE_AP && !vif->p2p) {
		iwl_mvm_vif_set_low_latency(mvmvif, true,
					    LOW_LATENCY_VIF_TYPE);
		iwl_mvm_send_low_latency_cmd(mvm, true, mvmvif->id);
	}

2403
	/* power updated needs to be done before quotas */
2404
	iwl_mvm_power_update_mac(mvm);
2405

2406
	ret = iwl_mvm_update_quotas(mvm, false, NULL);
J
Johannes Berg 已提交
2407
	if (ret)
2408
		goto out_quota_failed;
J
Johannes Berg 已提交
2409

J
Johannes Berg 已提交
2410
	/* Need to update the P2P Device MAC (only GO, IBSS is single vif) */
J
Johannes Berg 已提交
2411
	if (vif->p2p && mvm->p2p_device_vif)
2412
		iwl_mvm_mac_ctxt_changed(mvm, mvm->p2p_device_vif, false, NULL);
J
Johannes Berg 已提交
2413

2414 2415
	iwl_mvm_ref(mvm, IWL_MVM_REF_AP_IBSS);

2416
	iwl_mvm_bt_coex_vif_change(mvm);
E
Emmanuel Grumbach 已提交
2417

2418 2419 2420 2421
	/* we don't support TDLS during DCM */
	if (iwl_mvm_phy_ctx_count(mvm) > 1)
		iwl_mvm_teardown_tdls_peers(mvm);

2422
	goto out_unlock;
J
Johannes Berg 已提交
2423

2424
out_quota_failed:
2425
	iwl_mvm_power_update_mac(mvm);
2426
	mvmvif->ap_ibss_active = false;
2427
	iwl_mvm_send_rm_bcast_sta(mvm, vif);
2428
	iwl_mvm_rm_mcast_sta(mvm, vif);
J
Johannes Berg 已提交
2429 2430 2431 2432 2433 2434
out_unbind:
	iwl_mvm_binding_remove_vif(mvm, vif);
out_remove:
	iwl_mvm_mac_ctxt_remove(mvm, vif);
out_unlock:
	mutex_unlock(&mvm->mutex);
2435
	iwl_mvm_unref(mvm, IWL_MVM_REF_START_AP);
J
Johannes Berg 已提交
2436 2437 2438
	return ret;
}

J
Johannes Berg 已提交
2439 2440
static void iwl_mvm_stop_ap_ibss(struct ieee80211_hw *hw,
				 struct ieee80211_vif *vif)
J
Johannes Berg 已提交
2441 2442 2443 2444
{
	struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
	struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);

2445 2446
	iwl_mvm_prepare_mac_removal(mvm, vif);

J
Johannes Berg 已提交
2447 2448
	mutex_lock(&mvm->mutex);

2449
	/* Handle AP stop while in CSA */
2450 2451 2452
	if (rcu_access_pointer(mvm->csa_vif) == vif) {
		iwl_mvm_remove_time_event(mvm, mvmvif,
					  &mvmvif->time_event_data);
2453
		RCU_INIT_POINTER(mvm->csa_vif, NULL);
2454
		mvmvif->csa_countdown = false;
2455
	}
2456

2457 2458 2459 2460 2461
	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
2462
	mvmvif->ap_ibss_active = false;
2463
	mvm->ap_last_beacon_gp2 = 0;
J
Johannes Berg 已提交
2464

2465 2466 2467 2468 2469 2470
	if (vif->type == NL80211_IFTYPE_AP && !vif->p2p) {
		iwl_mvm_vif_set_low_latency(mvmvif, false,
					    LOW_LATENCY_VIF_TYPE);
		iwl_mvm_send_low_latency_cmd(mvm, false,  mvmvif->id);
	}

2471
	iwl_mvm_bt_coex_vif_change(mvm);
E
Emmanuel Grumbach 已提交
2472

2473 2474
	iwl_mvm_unref(mvm, IWL_MVM_REF_AP_IBSS);

J
Johannes Berg 已提交
2475
	/* Need to update the P2P Device MAC (only GO, IBSS is single vif) */
J
Johannes Berg 已提交
2476
	if (vif->p2p && mvm->p2p_device_vif)
2477
		iwl_mvm_mac_ctxt_changed(mvm, mvm->p2p_device_vif, false, NULL);
J
Johannes Berg 已提交
2478

2479
	iwl_mvm_update_quotas(mvm, false, NULL);
2480 2481 2482 2483 2484 2485 2486 2487 2488 2489 2490

	/*
	 * 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);
2491
	iwl_mvm_send_rm_bcast_sta(mvm, vif);
2492 2493
	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
2494
	iwl_mvm_binding_remove_vif(mvm, vif);
2495

2496
	iwl_mvm_power_update_mac(mvm);
2497

J
Johannes Berg 已提交
2498 2499
	iwl_mvm_mac_ctxt_remove(mvm, vif);

2500 2501 2502
	kfree(mvmvif->ap_wep_key);
	mvmvif->ap_wep_key = NULL;

J
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2503 2504 2505
	mutex_unlock(&mvm->mutex);
}

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2506 2507 2508 2509 2510
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
2511
{
2512
	struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
2513

2514 2515 2516 2517
	/* Changes will be applied when the AP/IBSS is started */
	if (!mvmvif->ap_ibss_active)
		return;

2518
	if (changes & (BSS_CHANGED_ERP_CTS_PROT | BSS_CHANGED_HT |
2519
		       BSS_CHANGED_BANDWIDTH | BSS_CHANGED_QOS) &&
2520
	    iwl_mvm_mac_ctxt_changed(mvm, vif, false, NULL))
2521
		IWL_ERR(mvm, "failed to update MAC %pM\n", vif->addr);
2522

J
Johannes Berg 已提交
2523
	/* Need to send a new beacon template to the FW */
2524 2525 2526
	if (changes & BSS_CHANGED_BEACON &&
	    iwl_mvm_mac_ctxt_beacon_changed(mvm, vif))
		IWL_WARN(mvm, "Failed updating beacon data\n");
2527 2528 2529 2530 2531 2532

	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);
	}
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2533 2534 2535 2536 2537 2538 2539 2540 2541
}

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);

2542 2543 2544 2545 2546 2547 2548 2549
	/*
	 * 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
2550 2551
	mutex_lock(&mvm->mutex);

2552
	if (changes & BSS_CHANGED_IDLE && !bss_conf->idle)
2553
		iwl_mvm_scan_stop(mvm, IWL_MVM_SCAN_SCHED, true);
2554

J
Johannes Berg 已提交
2555 2556 2557 2558 2559
	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
2560 2561
	case NL80211_IFTYPE_ADHOC:
		iwl_mvm_bss_info_changed_ap_ibss(mvm, vif, bss_conf, changes);
J
Johannes Berg 已提交
2562
		break;
2563 2564 2565 2566
	case NL80211_IFTYPE_MONITOR:
		if (changes & BSS_CHANGED_MU_GROUPS)
			iwl_mvm_update_mu_groups(mvm, vif);
		break;
J
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2567 2568 2569 2570 2571 2572
	default:
		/* shouldn't happen */
		WARN_ON_ONCE(1);
	}

	mutex_unlock(&mvm->mutex);
2573
	iwl_mvm_unref(mvm, IWL_MVM_REF_BSS_CHANGED);
J
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2574 2575 2576 2577
}

static int iwl_mvm_mac_hw_scan(struct ieee80211_hw *hw,
			       struct ieee80211_vif *vif,
2578
			       struct ieee80211_scan_request *hw_req)
J
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2579 2580 2581 2582
{
	struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
	int ret;

2583 2584
	if (hw_req->req.n_channels == 0 ||
	    hw_req->req.n_channels > mvm->fw->ucode_capa.n_scan_channels)
J
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2585 2586 2587
		return -EINVAL;

	mutex_lock(&mvm->mutex);
2588
	ret = iwl_mvm_reg_scan_start(mvm, vif, &hw_req->req, &hw_req->ies);
J
Johannes Berg 已提交
2589
	mutex_unlock(&mvm->mutex);
2590

J
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2591 2592 2593 2594 2595 2596 2597 2598 2599 2600
	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);

2601 2602 2603 2604 2605 2606 2607
	/* 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.
	*/
2608
	if (mvm->scan_status & IWL_MVM_SCAN_REGULAR)
2609
		iwl_mvm_scan_stop(mvm, IWL_MVM_SCAN_REGULAR, true);
J
Johannes Berg 已提交
2610 2611 2612 2613 2614 2615

	mutex_unlock(&mvm->mutex);
}

static void
iwl_mvm_mac_allow_buffered_frames(struct ieee80211_hw *hw,
2616
				  struct ieee80211_sta *sta, u16 tids,
J
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2617 2618 2619 2620 2621 2622
				  int num_frames,
				  enum ieee80211_frame_release_type reason,
				  bool more_data)
{
	struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);

2623
	/* Called when we need to transmit (a) frame(s) from mac80211 */
J
Johannes Berg 已提交
2624

2625 2626 2627 2628 2629 2630 2631 2632 2633 2634 2635 2636 2637
	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);

2638
	/* Called when we need to transmit (a) frame(s) from agg or dqa queue */
2639 2640 2641

	iwl_mvm_sta_modify_sleep_tx_count(mvm, sta, reason, num_frames,
					  tids, more_data, true);
J
Johannes Berg 已提交
2642 2643
}

2644 2645 2646
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
2647 2648
{
	struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2649
	struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta);
2650
	unsigned long txqs = 0, tids = 0;
2651
	int tid;
J
Johannes Berg 已提交
2652

2653 2654 2655 2656 2657 2658 2659 2660
	/*
	 * 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;

2661 2662 2663 2664
	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];

2665
		if (tid_data->txq_id == IWL_MVM_INVALID_QUEUE)
2666 2667
			continue;

2668 2669
		__set_bit(tid_data->txq_id, &txqs);

2670
		if (iwl_mvm_tid_queued(mvm, tid_data) == 0)
2671 2672 2673 2674 2675
			continue;

		__set_bit(tid, &tids);
	}

J
Johannes Berg 已提交
2676 2677
	switch (cmd) {
	case STA_NOTIFY_SLEEP:
2678
		for_each_set_bit(tid, &tids, IWL_MAX_TID_COUNT)
2679
			ieee80211_sta_set_buffered(sta, tid, true);
2680 2681 2682

		if (txqs)
			iwl_trans_freeze_txq_timer(mvm->trans, txqs, true);
J
Johannes Berg 已提交
2683 2684 2685 2686 2687 2688 2689
		/*
		 * 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:
2690
		if (WARN_ON(mvmsta->sta_id == IWL_MVM_INVALID_STA))
J
Johannes Berg 已提交
2691
			break;
2692 2693 2694

		if (txqs)
			iwl_trans_freeze_txq_timer(mvm->trans, txqs, false);
2695
		iwl_mvm_sta_modify_ps_wake(mvm, sta);
J
Johannes Berg 已提交
2696 2697 2698 2699
		break;
	default:
		break;
	}
2700
	spin_unlock_bh(&mvmsta->lock);
J
Johannes Berg 已提交
2701 2702
}

2703 2704 2705 2706 2707 2708 2709 2710 2711 2712 2713 2714 2715 2716 2717 2718 2719 2720 2721 2722
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();
2723
	sta = rcu_dereference(mvm->fw_id_to_mac_id[notif->sta_id]);
2724 2725 2726 2727 2728 2729 2730 2731 2732 2733 2734 2735 2736 2737 2738 2739 2740 2741 2742 2743 2744 2745 2746 2747 2748 2749 2750 2751 2752 2753 2754 2755 2756 2757 2758 2759 2760 2761 2762 2763
	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();
}

2764 2765 2766 2767 2768
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);
2769
	struct iwl_mvm_sta *mvm_sta = iwl_mvm_sta_from_mac80211(sta);
2770 2771 2772 2773 2774 2775 2776 2777 2778 2779 2780 2781 2782

	/*
	 * 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));
2783

2784 2785 2786
	mutex_unlock(&mvm->mutex);
}

2787 2788 2789
static void iwl_mvm_check_uapsd(struct iwl_mvm *mvm, struct ieee80211_vif *vif,
				const u8 *bssid)
{
2790 2791 2792 2793 2794 2795 2796 2797 2798 2799
	int i;

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

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

2800 2801 2802
	if (!(mvm->fw->ucode_capa.flags & IWL_UCODE_TLV_FLAGS_UAPSD_SUPPORT))
		return;

2803
	if (vif->p2p && !iwl_mvm_is_p2p_scm_uapsd_supported(mvm)) {
2804 2805 2806 2807
		vif->driver_flags &= ~IEEE80211_VIF_SUPPORTS_UAPSD;
		return;
	}

2808 2809
	if (!vif->p2p &&
	    (iwlwifi_mod_params.uapsd_disable & IWL_DISABLE_UAPSD_BSS)) {
2810 2811 2812 2813
		vif->driver_flags &= ~IEEE80211_VIF_SUPPORTS_UAPSD;
		return;
	}

2814 2815 2816 2817 2818 2819 2820
	for (i = 0; i < IWL_MVM_UAPSD_NOAGG_LIST_LEN; i++) {
		if (ether_addr_equal(mvm->uapsd_noagg_bssids[i].addr, bssid)) {
			vif->driver_flags &= ~IEEE80211_VIF_SUPPORTS_UAPSD;
			return;
		}
	}

2821 2822 2823
	vif->driver_flags |= IEEE80211_VIF_SUPPORTS_UAPSD;
}

2824 2825 2826 2827 2828 2829 2830 2831
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;

2832 2833 2834
	trig = iwl_fw_dbg_trigger_on(&mvm->fwrt, ieee80211_vif_to_wdev(vif),
				     FW_DBG_TRIGGER_TDLS);
	if (!trig)
2835 2836 2837 2838 2839 2840 2841 2842 2843 2844 2845
		return;

	tdls_trig = (void *)trig->data;

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

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

2846 2847 2848
	iwl_fw_dbg_collect_trig(&mvm->fwrt, trig,
				"TDLS event occurred, peer %pM, action %d",
				peer_addr, action);
2849 2850
}

2851 2852 2853 2854 2855 2856 2857 2858 2859 2860
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];
2861 2862 2863 2864 2865 2866 2867 2868 2869

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

			/*
			 * The first deferred frame should've stopped the MAC
			 * queues, so we should never get a second deferred
			 * frame for the RA/TID.
			 */
2870
			iwl_mvm_start_mac_queues(mvm, BIT(info->hw_queue));
2871
			ieee80211_free_txskb(mvm->hw, skb);
2872
		}
2873 2874 2875 2876
	}
	spin_unlock_bh(&mvm_sta->lock);
}

J
Johannes Berg 已提交
2877 2878 2879 2880 2881 2882 2883 2884
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);
2885
	struct iwl_mvm_sta *mvm_sta = iwl_mvm_sta_from_mac80211(sta);
J
Johannes Berg 已提交
2886 2887 2888 2889 2890 2891 2892 2893 2894
	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;

2895 2896 2897 2898 2899 2900 2901 2902 2903 2904 2905 2906 2907 2908
	/*
	 * 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 &&
2909
	    new_state == IEEE80211_STA_NOTEXIST) {
2910 2911 2912 2913 2914 2915 2916 2917 2918
		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
2919
	mutex_lock(&mvm->mutex);
2920
	/* track whether or not the station is associated */
2921
	mvm_sta->sta_state = new_state;
2922

J
Johannes Berg 已提交
2923 2924
	if (old_state == IEEE80211_STA_NOTEXIST &&
	    new_state == IEEE80211_STA_NONE) {
2925 2926 2927 2928 2929 2930 2931 2932 2933 2934 2935 2936 2937 2938 2939
		/*
		 * 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;
		}
2940 2941 2942

		if (sta->tdls &&
		    (vif->p2p ||
2943 2944
		     iwl_mvm_tdls_sta_count(mvm, NULL) ==
						IWL_MVM_TDLS_STA_COUNT ||
2945 2946 2947 2948 2949 2950
		     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
2951
		ret = iwl_mvm_add_sta(mvm, vif, sta);
2952
		if (sta->tdls && ret == 0) {
2953
			iwl_mvm_recalc_tdls_state(mvm, vif, true);
2954 2955 2956
			iwl_mvm_tdls_check_trigger(mvm, vif, sta->addr,
						   NL80211_TDLS_SETUP);
		}
J
Johannes Berg 已提交
2957 2958
	} else if (old_state == IEEE80211_STA_NONE &&
		   new_state == IEEE80211_STA_AUTH) {
2959 2960 2961 2962 2963
		/*
		 * 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;
2964
		iwl_mvm_check_uapsd(mvm, vif, sta->addr);
J
Johannes Berg 已提交
2965 2966 2967
		ret = 0;
	} else if (old_state == IEEE80211_STA_AUTH &&
		   new_state == IEEE80211_STA_ASSOC) {
2968 2969 2970 2971
		if (vif->type == NL80211_IFTYPE_AP) {
			mvmvif->ap_assoc_sta_count++;
			iwl_mvm_mac_ctxt_changed(mvm, vif, false, NULL);
		}
2972

2973 2974
		iwl_mvm_rs_rate_init(mvm, sta, mvmvif->phy_ctxt->channel->band,
				     false);
2975
		ret = iwl_mvm_update_sta(mvm, vif, sta);
J
Johannes Berg 已提交
2976 2977
	} else if (old_state == IEEE80211_STA_ASSOC &&
		   new_state == IEEE80211_STA_AUTHORIZED) {
2978 2979 2980 2981 2982

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

2983 2984 2985 2986
		if (sta->tdls)
			iwl_mvm_tdls_check_trigger(mvm, vif, sta->addr,
						   NL80211_TDLS_ENABLE_LINK);

2987
		/* enable beacon filtering */
2988
		WARN_ON(iwl_mvm_enable_beacon_filter(mvm, vif, 0));
2989

2990 2991
		iwl_mvm_rs_rate_init(mvm, sta, mvmvif->phy_ctxt->channel->band,
				     true);
2992

2993 2994 2995 2996 2997 2998 2999
		/* if wep is used, need to set the key for the station now */
		if (vif->type == NL80211_IFTYPE_AP && mvmvif->ap_wep_key)
			ret = iwl_mvm_set_sta_key(mvm, vif, sta,
						  mvmvif->ap_wep_key,
						  STA_KEY_IDX_INVALID);
		else
			ret = 0;
J
Johannes Berg 已提交
3000 3001
	} else if (old_state == IEEE80211_STA_AUTHORIZED &&
		   new_state == IEEE80211_STA_ASSOC) {
3002
		/* disable beacon filtering */
E
Emmanuel Grumbach 已提交
3003
		WARN_ON(iwl_mvm_disable_beacon_filter(mvm, vif, 0));
J
Johannes Berg 已提交
3004 3005 3006
		ret = 0;
	} else if (old_state == IEEE80211_STA_ASSOC &&
		   new_state == IEEE80211_STA_AUTH) {
3007 3008 3009 3010
		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
3011 3012 3013 3014 3015 3016 3017
		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);
3018
		if (sta->tdls) {
3019
			iwl_mvm_recalc_tdls_state(mvm, vif, false);
3020 3021 3022
			iwl_mvm_tdls_check_trigger(mvm, vif, sta->addr,
						   NL80211_TDLS_DISABLE_LINK);
		}
J
Johannes Berg 已提交
3023 3024 3025
	} else {
		ret = -EIO;
	}
3026
 out_unlock:
J
Johannes Berg 已提交
3027 3028
	mutex_unlock(&mvm->mutex);

3029 3030 3031 3032 3033 3034 3035 3036 3037
	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
3038 3039 3040 3041 3042 3043 3044 3045 3046 3047 3048 3049
	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;
}

3050 3051 3052 3053 3054 3055 3056 3057 3058 3059 3060
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
3061 3062 3063 3064 3065 3066 3067 3068 3069 3070 3071 3072 3073 3074 3075 3076 3077
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);
3078
		ret = iwl_mvm_mac_ctxt_changed(mvm, vif, false, NULL);
J
Johannes Berg 已提交
3079 3080 3081 3082 3083 3084 3085
		mutex_unlock(&mvm->mutex);
		return ret;
	}
	return 0;
}

static void iwl_mvm_mac_mgd_prepare_tx(struct ieee80211_hw *hw,
3086 3087
				       struct ieee80211_vif *vif,
				       u16 req_duration)
J
Johannes Berg 已提交
3088 3089
{
	struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3090 3091
	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
3092

3093 3094 3095 3096 3097 3098 3099
	/*
	 * 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;

3100 3101 3102
	if (req_duration > duration)
		duration = req_duration;

J
Johannes Berg 已提交
3103 3104
	mutex_lock(&mvm->mutex);
	/* Try really hard to protect the session and hear a beacon */
3105
	iwl_mvm_protect_session(mvm, vif, duration, min_duration, 500, false);
J
Johannes Berg 已提交
3106
	mutex_unlock(&mvm->mutex);
3107 3108

	iwl_mvm_unref(mvm, IWL_MVM_REF_PREPARE_TX);
J
Johannes Berg 已提交
3109 3110
}

3111 3112 3113
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
3114
					struct ieee80211_scan_ies *ies)
3115 3116 3117 3118
{
	struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);

	int ret;
3119

3120 3121
	mutex_lock(&mvm->mutex);

3122
	if (!vif->bss_conf.idle) {
3123 3124 3125 3126
		ret = -EBUSY;
		goto out;
	}

3127
	ret = iwl_mvm_sched_scan_start(mvm, vif, req, ies, IWL_MVM_SCAN_SCHED);
3128

3129 3130 3131 3132 3133
out:
	mutex_unlock(&mvm->mutex);
	return ret;
}

3134 3135
static int iwl_mvm_mac_sched_scan_stop(struct ieee80211_hw *hw,
				       struct ieee80211_vif *vif)
3136 3137
{
	struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3138
	int ret;
3139 3140

	mutex_lock(&mvm->mutex);
3141 3142 3143 3144 3145 3146 3147 3148 3149

	/* 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.
	*/
3150
	if (!(mvm->scan_status & IWL_MVM_SCAN_SCHED)) {
3151 3152 3153 3154
		mutex_unlock(&mvm->mutex);
		return 0;
	}

3155
	ret = iwl_mvm_scan_stop(mvm, IWL_MVM_SCAN_SCHED, false);
3156
	mutex_unlock(&mvm->mutex);
3157
	iwl_mvm_wait_for_async_handlers(mvm);
3158

3159
	return ret;
3160 3161
}

J
Johannes Berg 已提交
3162 3163 3164 3165 3166 3167 3168
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);
3169 3170 3171
	struct iwl_mvm_sta *mvmsta;
	struct iwl_mvm_key_pn *ptk_pn;
	int keyidx = key->keyidx;
J
Johannes Berg 已提交
3172
	int ret;
3173
	u8 key_offset;
J
Johannes Berg 已提交
3174

3175
	if (iwlwifi_mod_params.swcrypto) {
J
Johannes Berg 已提交
3176 3177 3178 3179 3180 3181
		IWL_DEBUG_MAC80211(mvm, "leave - hwcrypto disabled\n");
		return -EOPNOTSUPP;
	}

	switch (key->cipher) {
	case WLAN_CIPHER_SUITE_TKIP:
3182 3183 3184 3185 3186 3187 3188 3189 3190
		if (!mvm->trans->cfg->gen2) {
			key->flags |= IEEE80211_KEY_FLAG_GENERATE_MMIC;
			key->flags |= IEEE80211_KEY_FLAG_PUT_IV_SPACE;
		} else if (vif->type == NL80211_IFTYPE_STATION) {
			key->flags |= IEEE80211_KEY_FLAG_PUT_MIC_SPACE;
		} else {
			IWL_DEBUG_MAC80211(mvm, "Use SW encryption for TKIP\n");
			return -EOPNOTSUPP;
		}
J
Johannes Berg 已提交
3191
		break;
3192
	case WLAN_CIPHER_SUITE_CCMP:
3193 3194
	case WLAN_CIPHER_SUITE_GCMP:
	case WLAN_CIPHER_SUITE_GCMP_256:
3195 3196
		if (!iwl_mvm_has_new_tx_api(mvm))
			key->flags |= IEEE80211_KEY_FLAG_PUT_IV_SPACE;
3197
		break;
J
Johannes Berg 已提交
3198
	case WLAN_CIPHER_SUITE_AES_CMAC:
3199 3200
	case WLAN_CIPHER_SUITE_BIP_GMAC_128:
	case WLAN_CIPHER_SUITE_BIP_GMAC_256:
3201
		WARN_ON_ONCE(!ieee80211_hw_check(hw, MFP_CAPABLE));
J
Johannes Berg 已提交
3202 3203 3204
		break;
	case WLAN_CIPHER_SUITE_WEP40:
	case WLAN_CIPHER_SUITE_WEP104:
3205 3206 3207 3208 3209 3210 3211 3212 3213 3214 3215
		if (vif->type == NL80211_IFTYPE_AP) {
			struct iwl_mvm_vif *mvmvif =
				iwl_mvm_vif_from_mac80211(vif);

			mvmvif->ap_wep_key = kmemdup(key,
						     sizeof(*key) + key->keylen,
						     GFP_KERNEL);
			if (!mvmvif->ap_wep_key)
				return -ENOMEM;
		}

3216 3217 3218
		if (vif->type != NL80211_IFTYPE_STATION)
			return 0;
		break;
J
Johannes Berg 已提交
3219
	default:
3220 3221 3222 3223 3224 3225
		/* 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
3226 3227 3228 3229 3230 3231
	}

	mutex_lock(&mvm->mutex);

	switch (cmd) {
	case SET_KEY:
J
Johannes Berg 已提交
3232 3233 3234 3235 3236 3237
		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.
3238
			 * CMAC/GMAC in AP/IBSS modes must be done in software.
J
Johannes Berg 已提交
3239
			 */
3240 3241 3242
			if (key->cipher == WLAN_CIPHER_SUITE_AES_CMAC ||
			    key->cipher == WLAN_CIPHER_SUITE_BIP_GMAC_128 ||
			    key->cipher == WLAN_CIPHER_SUITE_BIP_GMAC_256)
3243 3244 3245
				ret = -EOPNOTSUPP;
			else
				ret = 0;
3246 3247 3248 3249 3250 3251 3252

			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;
			}
3253 3254
		}

3255 3256 3257 3258 3259 3260 3261 3262 3263 3264 3265
		/* 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;
		}

3266 3267 3268 3269
		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 ||
3270 3271
		     key->cipher == WLAN_CIPHER_SUITE_GCMP ||
		     key->cipher == WLAN_CIPHER_SUITE_GCMP_256)) {
3272 3273 3274 3275 3276
			struct ieee80211_key_seq seq;
			int tid, q;

			mvmsta = iwl_mvm_sta_from_mac80211(sta);
			WARN_ON(rcu_access_pointer(mvmsta->ptk_pn[keyidx]));
3277 3278
			ptk_pn = kzalloc(struct_size(ptk_pn, q,
						     mvm->trans->num_rx_queues),
3279 3280 3281 3282 3283 3284 3285 3286 3287 3288 3289 3290 3291 3292 3293 3294 3295
					 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);
		}

3296 3297 3298 3299 3300 3301
		/* 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
3302
		IWL_DEBUG_MAC80211(mvm, "set hwcrypto key\n");
3303
		ret = iwl_mvm_set_sta_key(mvm, vif, sta, key, key_offset);
J
Johannes Berg 已提交
3304 3305 3306 3307 3308 3309
		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
			 */
3310
			key->hw_key_idx = STA_KEY_IDX_INVALID;
J
Johannes Berg 已提交
3311 3312 3313 3314 3315
			ret = 0;
		}

		break;
	case DISABLE_KEY:
3316 3317 3318 3319 3320
		if (key->hw_key_idx == STA_KEY_IDX_INVALID) {
			ret = 0;
			break;
		}

3321 3322 3323
		if (sta && iwl_mvm_has_new_rx_api(mvm) &&
		    key->flags & IEEE80211_KEY_FLAG_PAIRWISE &&
		    (key->cipher == WLAN_CIPHER_SUITE_CCMP ||
3324 3325
		     key->cipher == WLAN_CIPHER_SUITE_GCMP ||
		     key->cipher == WLAN_CIPHER_SUITE_GCMP_256)) {
3326 3327 3328 3329 3330 3331 3332 3333 3334
			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
3335 3336 3337 3338 3339 3340 3341 3342 3343 3344 3345 3346 3347 3348 3349 3350 3351 3352 3353
		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
3354 3355 3356
	if (keyconf->hw_key_idx == STA_KEY_IDX_INVALID)
		return;

J
Johannes Berg 已提交
3357 3358 3359 3360
	iwl_mvm_update_tkip_key(mvm, vif, keyconf, sta, iv32, phase1key);
}


3361 3362 3363 3364 3365 3366 3367 3368 3369 3370 3371 3372 3373 3374 3375 3376 3377 3378 3379 3380 3381 3382 3383 3384 3385 3386 3387 3388 3389 3390 3391 3392 3393 3394
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;
}

3395 3396 3397 3398 3399
#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)
3400 3401 3402 3403 3404 3405 3406 3407
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;
3408
	static const u16 time_event_response[] = { HOT_SPOT_CMD };
3409
	struct iwl_notification_wait wait_time_event;
3410 3411 3412
	u32 dtim_interval = vif->bss_conf.dtim_period *
		vif->bss_conf.beacon_int;
	u32 req_dur, delay;
3413 3414 3415 3416 3417 3418
	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 */
3419
		.channel_info.band = (channel->band == NL80211_BAND_2GHZ) ?
3420 3421 3422 3423 3424 3425 3426
			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)),
	 };

3427 3428 3429 3430 3431 3432 3433 3434 3435 3436 3437 3438 3439 3440 3441 3442 3443 3444 3445 3446 3447 3448 3449 3450 3451 3452 3453 3454 3455 3456
	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);
3457 3458 3459
	/* Set the node address */
	memcpy(aux_roc_req.node_addr, vif->addr, ETH_ALEN);

3460 3461 3462 3463 3464 3465 3466 3467 3468
	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;
	}

3469 3470 3471 3472 3473 3474 3475 3476 3477 3478 3479 3480 3481 3482 3483 3484 3485 3486 3487 3488 3489 3490 3491 3492 3493 3494 3495 3496 3497 3498 3499 3500 3501 3502 3503 3504 3505 3506 3507 3508 3509 3510 3511 3512
	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
3513 3514 3515
static int iwl_mvm_roc(struct ieee80211_hw *hw,
		       struct ieee80211_vif *vif,
		       struct ieee80211_channel *channel,
3516 3517
		       int duration,
		       enum ieee80211_roc_type type)
J
Johannes Berg 已提交
3518 3519
{
	struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3520
	struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
J
Johannes Berg 已提交
3521
	struct cfg80211_chan_def chandef;
3522 3523 3524 3525 3526
	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
3527

3528 3529 3530 3531
	/*
	 * Flush the done work, just in case it's still pending, so that
	 * the work it does can complete and we can accept new frames.
	 */
3532 3533
	flush_work(&mvm->roc_done_wk);

3534 3535
	mutex_lock(&mvm->mutex);

3536 3537
	switch (vif->type) {
	case NL80211_IFTYPE_STATION:
3538 3539
		if (fw_has_capa(&mvm->fw->ucode_capa,
				IWL_UCODE_TLV_CAPA_HOTSPOT_SUPPORT)) {
3540 3541 3542 3543 3544 3545 3546
			/* 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;
3547
		goto out_unlock;
3548 3549 3550 3551 3552
	case NL80211_IFTYPE_P2P_DEVICE:
		/* handle below */
		break;
	default:
		IWL_ERR(mvm, "vif isn't P2P_DEVICE: %d\n", vif->type);
3553 3554
		ret = -EINVAL;
		goto out_unlock;
J
Johannes Berg 已提交
3555 3556
	}

3557 3558 3559 3560 3561 3562 3563 3564 3565 3566 3567 3568 3569 3570 3571 3572 3573 3574 3575 3576 3577 3578 3579 3580 3581 3582 3583 3584 3585 3586 3587 3588
	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
3589 3590
	cfg80211_chandef_create(&chandef, channel, NL80211_CHAN_NO_HT);

3591 3592 3593 3594 3595 3596 3597 3598 3599 3600 3601 3602 3603 3604 3605 3606 3607 3608 3609 3610 3611 3612 3613 3614 3615 3616 3617 3618 3619 3620 3621 3622 3623 3624 3625 3626 3627 3628 3629 3630 3631 3632 3633 3634 3635 3636
	/*
	 * 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
3637
	/* Schedule the time events */
3638
	ret = iwl_mvm_start_p2p_roc(mvm, vif, duration, type);
J
Johannes Berg 已提交
3639

3640
out_unlock:
J
Johannes Berg 已提交
3641 3642 3643 3644 3645 3646 3647 3648 3649 3650 3651 3652
	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);
3653
	iwl_mvm_stop_roc(mvm);
J
Johannes Berg 已提交
3654 3655 3656 3657 3658 3659
	mutex_unlock(&mvm->mutex);

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

3660 3661
static int __iwl_mvm_add_chanctx(struct iwl_mvm *mvm,
				 struct ieee80211_chanctx_conf *ctx)
J
Johannes Berg 已提交
3662
{
3663 3664
	u16 *phy_ctxt_id = (u16 *)ctx->drv_priv;
	struct iwl_mvm_phy_ctxt *phy_ctxt;
J
Johannes Berg 已提交
3665 3666
	int ret;

3667 3668
	lockdep_assert_held(&mvm->mutex);

3669
	IWL_DEBUG_MAC80211(mvm, "Add channel context\n");
3670 3671 3672 3673 3674 3675

	phy_ctxt = iwl_mvm_get_free_phy_ctxt(mvm);
	if (!phy_ctxt) {
		ret = -ENOSPC;
		goto out;
	}
J
Johannes Berg 已提交
3676

3677
	ret = iwl_mvm_phy_ctxt_changed(mvm, phy_ctxt, &ctx->min_def,
3678 3679
				       ctx->rx_chains_static,
				       ctx->rx_chains_dynamic);
3680 3681 3682 3683 3684
	if (ret) {
		IWL_ERR(mvm, "Failed to add PHY context\n");
		goto out;
	}

3685
	iwl_mvm_phy_ctxt_ref(mvm, phy_ctxt);
3686 3687
	*phy_ctxt_id = phy_ctxt->id;
out:
3688 3689 3690 3691 3692 3693 3694 3695 3696 3697 3698
	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
3699
	mutex_unlock(&mvm->mutex);
3700

J
Johannes Berg 已提交
3701 3702 3703
	return ret;
}

3704 3705 3706 3707 3708 3709 3710 3711 3712 3713 3714
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
3715 3716 3717 3718 3719 3720
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);
3721
	__iwl_mvm_remove_chanctx(mvm, ctx);
J
Johannes Berg 已提交
3722 3723 3724 3725 3726 3727 3728 3729
	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);
3730 3731
	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
3732

3733 3734 3735
	if (WARN_ONCE((phy_ctxt->ref > 1) &&
		      (changed & ~(IEEE80211_CHANCTX_CHANGE_WIDTH |
				   IEEE80211_CHANCTX_CHANGE_RX_CHAINS |
3736 3737
				   IEEE80211_CHANCTX_CHANGE_RADAR |
				   IEEE80211_CHANCTX_CHANGE_MIN_WIDTH)),
3738 3739 3740 3741
		      "Cannot change PHY. Ref=%d, changed=0x%X\n",
		      phy_ctxt->ref, changed))
		return;

J
Johannes Berg 已提交
3742
	mutex_lock(&mvm->mutex);
3743 3744 3745 3746 3747 3748 3749 3750 3751 3752 3753 3754

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

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

3755
	iwl_mvm_bt_coex_vif_change(mvm);
3756
	iwl_mvm_phy_ctxt_changed(mvm, phy_ctxt, &ctx->min_def,
J
Johannes Berg 已提交
3757 3758
				 ctx->rx_chains_static,
				 ctx->rx_chains_dynamic);
3759 3760

out_unlock:
J
Johannes Berg 已提交
3761 3762 3763
	mutex_unlock(&mvm->mutex);
}

3764 3765
static int __iwl_mvm_assign_vif_chanctx(struct iwl_mvm *mvm,
					struct ieee80211_vif *vif,
3766 3767
					struct ieee80211_chanctx_conf *ctx,
					bool switching_chanctx)
J
Johannes Berg 已提交
3768
{
3769 3770
	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
3771 3772 3773
	struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
	int ret;

3774
	lockdep_assert_held(&mvm->mutex);
J
Johannes Berg 已提交
3775

3776
	mvmvif->phy_ctxt = phy_ctxt;
J
Johannes Berg 已提交
3777 3778 3779

	switch (vif->type) {
	case NL80211_IFTYPE_AP:
3780 3781
		/* only needed if we're switching chanctx (i.e. during CSA) */
		if (switching_chanctx) {
3782 3783 3784
			mvmvif->ap_ibss_active = true;
			break;
		}
J
Johannes Berg 已提交
3785
	case NL80211_IFTYPE_ADHOC:
J
Johannes Berg 已提交
3786 3787
		/*
		 * The AP binding flow is handled as part of the start_ap flow
J
Johannes Berg 已提交
3788
		 * (in bss_info_changed), similarly for IBSS.
J
Johannes Berg 已提交
3789 3790
		 */
		ret = 0;
3791
		goto out;
J
Johannes Berg 已提交
3792
	case NL80211_IFTYPE_STATION:
3793
		mvmvif->csa_bcn_pending = false;
3794
		break;
J
Johannes Berg 已提交
3795
	case NL80211_IFTYPE_MONITOR:
3796 3797
		/* always disable PS when a monitor interface is active */
		mvmvif->ps_disabled = true;
J
Johannes Berg 已提交
3798 3799 3800
		break;
	default:
		ret = -EINVAL;
3801
		goto out;
J
Johannes Berg 已提交
3802 3803 3804 3805
	}

	ret = iwl_mvm_binding_add_vif(mvm, vif);
	if (ret)
3806
		goto out;
J
Johannes Berg 已提交
3807 3808

	/*
3809 3810 3811
	 * Power state must be updated before quotas,
	 * otherwise fw will complain.
	 */
3812
	iwl_mvm_power_update_mac(mvm);
3813 3814

	/* Setting the quota at this stage is only required for monitor
J
Johannes Berg 已提交
3815 3816 3817 3818
	 * interfaces. For the other types, the bss_info changed flow
	 * will handle quota settings.
	 */
	if (vif->type == NL80211_IFTYPE_MONITOR) {
3819
		mvmvif->monitor_active = true;
3820
		ret = iwl_mvm_update_quotas(mvm, false, NULL);
J
Johannes Berg 已提交
3821 3822
		if (ret)
			goto out_remove_binding;
3823 3824 3825 3826 3827

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

J
Johannes Berg 已提交
3828 3829
	}

3830
	/* Handle binding during CSA */
3831
	if (vif->type == NL80211_IFTYPE_AP) {
3832
		iwl_mvm_update_quotas(mvm, false, NULL);
3833
		iwl_mvm_mac_ctxt_changed(mvm, vif, false, NULL);
3834 3835
	}

3836
	if (switching_chanctx && vif->type == NL80211_IFTYPE_STATION) {
3837
		u32 duration = 3 * vif->bss_conf.beacon_int;
3838 3839 3840 3841 3842 3843 3844 3845 3846 3847 3848 3849

		/* 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.
		 */
3850
		mvmvif->csa_bcn_pending = true;
3851 3852 3853 3854 3855 3856
		iwl_mvm_protect_session(mvm, vif, duration, duration,
					vif->bss_conf.beacon_int / 2,
					true);

		iwl_mvm_unref(mvm, IWL_MVM_REF_PROTECT_CSA);

3857
		iwl_mvm_update_quotas(mvm, false, NULL);
3858 3859
	}

3860
	goto out;
J
Johannes Berg 已提交
3861

3862
out_remove_binding:
J
Johannes Berg 已提交
3863
	iwl_mvm_binding_remove_vif(mvm, vif);
3864
	iwl_mvm_power_update_mac(mvm);
3865
out:
J
Johannes Berg 已提交
3866 3867 3868 3869
	if (ret)
		mvmvif->phy_ctxt = NULL;
	return ret;
}
3870 3871 3872
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
3873 3874
{
	struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3875
	int ret;
J
Johannes Berg 已提交
3876 3877

	mutex_lock(&mvm->mutex);
3878
	ret = __iwl_mvm_assign_vif_chanctx(mvm, vif, ctx, false);
3879 3880 3881 3882 3883 3884 3885
	mutex_unlock(&mvm->mutex);

	return ret;
}

static void __iwl_mvm_unassign_vif_chanctx(struct iwl_mvm *mvm,
					   struct ieee80211_vif *vif,
3886 3887
					   struct ieee80211_chanctx_conf *ctx,
					   bool switching_chanctx)
3888 3889
{
	struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
3890
	struct ieee80211_vif *disabled_vif = NULL;
3891 3892

	lockdep_assert_held(&mvm->mutex);
J
Johannes Berg 已提交
3893 3894 3895 3896

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

	switch (vif->type) {
J
Johannes Berg 已提交
3897
	case NL80211_IFTYPE_ADHOC:
3898
		goto out;
J
Johannes Berg 已提交
3899
	case NL80211_IFTYPE_MONITOR:
3900
		mvmvif->monitor_active = false;
3901
		mvmvif->ps_disabled = false;
3902
		iwl_mvm_rm_snif_sta(mvm, vif);
J
Johannes Berg 已提交
3903
		break;
3904 3905
	case NL80211_IFTYPE_AP:
		/* This part is triggered only during CSA */
3906
		if (!switching_chanctx || !mvmvif->ap_ibss_active)
3907
			goto out;
3908

3909 3910
		mvmvif->csa_countdown = false;

3911 3912 3913 3914 3915 3916
		/* 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);

3917
		mvmvif->ap_ibss_active = false;
3918 3919 3920 3921 3922 3923 3924
		break;
	case NL80211_IFTYPE_STATION:
		if (!switching_chanctx)
			break;

		disabled_vif = vif;

3925
		iwl_mvm_mac_ctxt_changed(mvm, vif, true, NULL);
3926
		break;
J
Johannes Berg 已提交
3927 3928 3929 3930
	default:
		break;
	}

3931
	iwl_mvm_update_quotas(mvm, false, disabled_vif);
3932
	iwl_mvm_binding_remove_vif(mvm, vif);
3933

3934
out:
3935
	mvmvif->phy_ctxt = NULL;
3936
	iwl_mvm_power_update_mac(mvm);
3937 3938 3939 3940 3941 3942 3943 3944 3945
}

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);
3946
	__iwl_mvm_unassign_vif_chanctx(mvm, vif, ctx, false);
J
Johannes Berg 已提交
3947 3948 3949
	mutex_unlock(&mvm->mutex);
}

3950 3951 3952
static int
iwl_mvm_switch_vif_chanctx_swap(struct iwl_mvm *mvm,
				struct ieee80211_vif_chanctx_switch *vifs)
3953 3954 3955 3956
{
	int ret;

	mutex_lock(&mvm->mutex);
3957
	__iwl_mvm_unassign_vif_chanctx(mvm, vifs[0].vif, vifs[0].old_ctx, true);
3958 3959 3960 3961 3962 3963 3964 3965
	__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;
	}

3966 3967
	ret = __iwl_mvm_assign_vif_chanctx(mvm, vifs[0].vif, vifs[0].new_ctx,
					   true);
3968 3969 3970 3971 3972 3973
	if (ret) {
		IWL_ERR(mvm,
			"failed to assign new_ctx during channel switch\n");
		goto out_remove;
	}

3974 3975 3976 3977
	/* 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);

3978 3979 3980 3981 3982 3983
	goto out;

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

out_reassign:
3984
	if (__iwl_mvm_add_chanctx(mvm, vifs[0].old_ctx)) {
3985 3986 3987 3988
		IWL_ERR(mvm, "failed to add old_ctx back after failure.\n");
		goto out_restart;
	}

3989 3990
	if (__iwl_mvm_assign_vif_chanctx(mvm, vifs[0].vif, vifs[0].old_ctx,
					 true)) {
3991 3992 3993 3994 3995 3996 3997 3998 3999 4000 4001 4002
		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);
4003 4004 4005 4006

	return ret;
}

4007 4008 4009 4010 4011 4012 4013 4014 4015 4016 4017 4018 4019 4020 4021 4022 4023 4024 4025 4026 4027 4028 4029 4030 4031 4032 4033 4034 4035 4036 4037 4038 4039 4040 4041 4042 4043 4044
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;
}

4045 4046 4047 4048 4049 4050 4051 4052 4053 4054 4055 4056 4057 4058 4059 4060 4061
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:
4062
		ret = iwl_mvm_switch_vif_chanctx_reassign(mvm, vifs);
4063 4064 4065 4066 4067 4068
		break;
	default:
		ret = -EOPNOTSUPP;
		break;
	}

4069 4070 4071
	return ret;
}

4072 4073 4074 4075 4076 4077 4078
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
4079 4080 4081 4082 4083
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);
4084
	struct iwl_mvm_sta *mvm_sta = iwl_mvm_sta_from_mac80211(sta);
J
Johannes Berg 已提交
4085 4086 4087 4088 4089 4090 4091 4092 4093

	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);
}

4094 4095 4096 4097
#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 },
4098
	[IWL_MVM_TM_ATTR_BEACON_FILTER_STATE] = { .type = NLA_U32 },
4099 4100 4101 4102 4103 4104 4105 4106 4107 4108
};

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;

4109 4110
	err = nla_parse(tb, IWL_MVM_TM_ATTR_MAX, data, len, iwl_mvm_tm_policy,
			NULL);
4111 4112 4113 4114 4115 4116 4117 4118 4119 4120 4121 4122 4123 4124 4125 4126 4127 4128 4129 4130
	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;

4131
		return iwl_mvm_update_quotas(mvm, true, NULL);
4132 4133 4134 4135 4136 4137 4138 4139
	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
4140 4141
			return iwl_mvm_enable_beacon_filter(mvm, vif, 0);
		return iwl_mvm_disable_beacon_filter(mvm, vif, 0);
4142 4143 4144 4145 4146 4147 4148 4149 4150 4151 4152 4153 4154 4155 4156 4157 4158 4159 4160 4161
	}

	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

4162 4163 4164 4165 4166 4167 4168 4169 4170 4171 4172 4173 4174 4175
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");
}

4176 4177 4178
static int iwl_mvm_pre_channel_switch(struct ieee80211_hw *hw,
				      struct ieee80211_vif *vif,
				      struct ieee80211_channel_switch *chsw)
4179 4180
{
	struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
4181
	struct ieee80211_vif *csa_vif;
4182
	struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
4183
	u32 apply_time;
4184
	int ret;
4185 4186

	mutex_lock(&mvm->mutex);
4187

4188 4189
	mvmvif->csa_failed = false;

4190
	IWL_DEBUG_MAC80211(mvm, "pre CSA to freq %d\n",
4191
			   chsw->chandef.center_freq1);
4192

4193 4194 4195
	iwl_fw_dbg_trigger_simple_stop(&mvm->fwrt,
				       ieee80211_vif_to_wdev(vif),
				       FW_DBG_TRIGGER_CHANNEL_SWITCH);
4196

4197 4198 4199 4200 4201 4202 4203 4204 4205 4206 4207
	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;
		}

4208 4209 4210 4211 4212 4213 4214
		/* 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;
		}

4215
		rcu_assign_pointer(mvm->csa_vif, vif);
4216 4217 4218 4219 4220 4221 4222

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

4223 4224
		mvmvif->csa_target_freq = chsw->chandef.chan->center_freq;

4225
		break;
4226
	case NL80211_IFTYPE_STATION:
4227 4228
		/* Schedule the time event to a bit before beacon 1,
		 * to make sure we're in the new channel when the
4229 4230 4231
		 * GO/AP arrives. In case count <= 1 immediately schedule the
		 * TE (this might result with some packet loss or connection
		 * loss).
4232
		 */
4233 4234 4235 4236 4237 4238
		if (chsw->count <= 1)
			apply_time = 0;
		else
			apply_time = chsw->device_timestamp +
				((vif->bss_conf.beacon_int * (chsw->count - 1) -
				  IWL_MVM_CHANNEL_SWITCH_TIME_CLIENT) * 1024);
4239 4240 4241 4242

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

4243
		iwl_mvm_schedule_csa_period(mvm, vif, vif->bss_conf.beacon_int,
4244
					    apply_time);
4245 4246 4247 4248 4249 4250
		if (mvmvif->bf_data.bf_enabled) {
			ret = iwl_mvm_disable_beacon_filter(mvm, vif, 0);
			if (ret)
				goto out_unlock;
		}

4251
		break;
4252 4253 4254
	default:
		break;
	}
4255

4256 4257 4258 4259 4260
	mvmvif->ps_disabled = true;

	ret = iwl_mvm_power_update_ps(mvm);
	if (ret)
		goto out_unlock;
4261

4262 4263 4264
	/* we won't be on this channel any longer */
	iwl_mvm_teardown_tdls_peers(mvm);

4265 4266
out_unlock:
	mutex_unlock(&mvm->mutex);
4267 4268

	return ret;
4269 4270
}

4271 4272 4273 4274 4275 4276 4277 4278 4279
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);

4280 4281 4282 4283 4284 4285
	if (mvmvif->csa_failed) {
		mvmvif->csa_failed = false;
		ret = -EIO;
		goto out_unlock;
	}

4286 4287 4288
	if (vif->type == NL80211_IFTYPE_STATION) {
		struct iwl_mvm_sta *mvmsta;

4289
		mvmvif->csa_bcn_pending = false;
4290 4291 4292 4293 4294 4295 4296 4297 4298 4299 4300
		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);
4301 4302 4303 4304

		ret = iwl_mvm_enable_beacon_filter(mvm, vif, 0);
		if (ret)
			goto out_unlock;
4305 4306

		iwl_mvm_stop_session_protection(mvm, vif);
4307 4308
	}

4309 4310 4311 4312
	mvmvif->ps_disabled = false;

	ret = iwl_mvm_power_update_ps(mvm);

4313
out_unlock:
4314 4315 4316 4317 4318
	mutex_unlock(&mvm->mutex);

	return ret;
}

4319 4320
static void iwl_mvm_flush_no_vif(struct iwl_mvm *mvm, u32 queues, bool drop)
{
4321 4322
	int i;

4323
	if (!iwl_mvm_has_new_tx_api(mvm)) {
4324 4325
		if (drop) {
			mutex_lock(&mvm->mutex);
4326
			iwl_mvm_flush_tx_path(mvm,
4327
				iwl_mvm_flushable_queues(mvm) & queues, 0);
4328 4329
			mutex_unlock(&mvm->mutex);
		} else {
4330
			iwl_trans_wait_tx_queues_empty(mvm->trans, queues);
4331
		}
4332 4333
		return;
	}
4334

4335 4336 4337
	mutex_lock(&mvm->mutex);
	for (i = 0; i < ARRAY_SIZE(mvm->fw_id_to_mac_id); i++) {
		struct ieee80211_sta *sta;
4338

4339 4340 4341 4342
		sta = rcu_dereference_protected(mvm->fw_id_to_mac_id[i],
						lockdep_is_held(&mvm->mutex));
		if (IS_ERR_OR_NULL(sta))
			continue;
4343

4344 4345 4346 4347 4348
		if (drop)
			iwl_mvm_flush_sta_tids(mvm, i, 0xFF, 0);
		else
			iwl_mvm_wait_sta_queues_empty(mvm,
					iwl_mvm_sta_from_mac80211(sta));
4349
	}
4350
	mutex_unlock(&mvm->mutex);
4351 4352
}

4353 4354 4355 4356 4357 4358
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;
4359 4360 4361
	struct ieee80211_sta *sta;
	int i;
	u32 msk = 0;
4362

4363 4364 4365 4366 4367 4368
	if (!vif) {
		iwl_mvm_flush_no_vif(mvm, queues, drop);
		return;
	}

	if (vif->type != NL80211_IFTYPE_STATION)
4369 4370
		return;

4371
	/* Make sure we're done with the deferred traffic before flushing */
4372
	flush_work(&mvm->add_stream_wk);
4373

4374 4375 4376
	mutex_lock(&mvm->mutex);
	mvmvif = iwl_mvm_vif_from_mac80211(vif);

4377
	/* flush the AP-station and all TDLS peers */
4378
	for (i = 0; i < ARRAY_SIZE(mvm->fw_id_to_mac_id); i++) {
4379 4380 4381 4382 4383 4384 4385 4386 4387 4388 4389 4390
		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);

4391 4392 4393 4394 4395
		if (drop) {
			if (iwl_mvm_flush_sta(mvm, mvmsta, false, 0))
				IWL_ERR(mvm, "flush request fail\n");
		} else {
			msk |= mvmsta->tfd_queue_msk;
4396 4397
			if (iwl_mvm_has_new_tx_api(mvm))
				iwl_mvm_wait_sta_queues_empty(mvm, mvmsta);
4398
		}
4399
	}
4400

4401
	mutex_unlock(&mvm->mutex);
4402

4403 4404 4405
	/* this can take a while, and we may need/want other operations
	 * to succeed while doing this, so do it without the mutex held
	 */
4406
	if (!drop && !iwl_mvm_has_new_tx_api(mvm))
4407
		iwl_trans_wait_tx_queues_empty(mvm->trans, msk);
4408 4409
}

4410 4411 4412 4413 4414 4415 4416 4417 4418 4419 4420 4421
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;

4422 4423
	if (!fw_has_capa(&mvm->fw->ucode_capa,
			 IWL_UCODE_TLV_CAPA_RADIO_BEACON_STATS))
4424 4425 4426 4427
		return -ENOENT;

	mutex_lock(&mvm->mutex);

4428
	if (iwl_mvm_firmware_running(mvm)) {
4429
		ret = iwl_mvm_request_statistics(mvm, false);
4430 4431 4432 4433 4434 4435 4436 4437 4438 4439 4440 4441 4442 4443 4444 4445 4446 4447 4448 4449 4450 4451 4452 4453
		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);

4454
	ret = 0;
4455 4456 4457 4458 4459
 out:
	mutex_unlock(&mvm->mutex);
	return ret;
}

4460 4461 4462 4463 4464 4465 4466 4467 4468
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);

4469 4470
	if (mvmsta->avg_energy) {
		sinfo->signal_avg = mvmsta->avg_energy;
4471
		sinfo->filled |= BIT_ULL(NL80211_STA_INFO_SIGNAL_AVG);
4472 4473
	}

4474 4475
	if (!fw_has_capa(&mvm->fw->ucode_capa,
			 IWL_UCODE_TLV_CAPA_RADIO_BEACON_STATS))
4476 4477 4478 4479 4480 4481 4482 4483 4484 4485 4486 4487 4488 4489 4490 4491 4492 4493 4494
		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;
4495
	sinfo->filled |= BIT_ULL(NL80211_STA_INFO_BEACON_RX);
4496 4497 4498
	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;
4499
		sinfo->filled |= BIT_ULL(NL80211_STA_INFO_BEACON_SIGNAL_AVG);
4500 4501 4502 4503 4504
	}
 unlock:
	mutex_unlock(&mvm->mutex);
}

4505 4506 4507
static void iwl_mvm_event_mlme_callback(struct iwl_mvm *mvm,
					struct ieee80211_vif *vif,
					const struct ieee80211_event *event)
4508
{
4509 4510 4511 4512 4513
#define CHECK_MLME_TRIGGER(_cnt, _fmt...)				\
	do {								\
		if ((trig_mlme->_cnt) && --(trig_mlme->_cnt))		\
			break;						\
		iwl_fw_dbg_collect_trig(&(mvm)->fwrt, trig, _fmt);	\
4514 4515 4516 4517 4518
	} while (0)

	struct iwl_fw_dbg_trigger_tlv *trig;
	struct iwl_fw_dbg_trigger_mlme *trig_mlme;

4519 4520 4521
	trig = iwl_fw_dbg_trigger_on(&mvm->fwrt, ieee80211_vif_to_wdev(vif),
				     FW_DBG_TRIGGER_MLME);
	if (!trig)
4522 4523 4524 4525 4526 4527
		return;

	trig_mlme = (void *)trig->data;

	if (event->u.mlme.data == ASSOC_EVENT) {
		if (event->u.mlme.status == MLME_DENIED)
4528
			CHECK_MLME_TRIGGER(stop_assoc_denied,
4529 4530 4531
					   "DENIED ASSOC: reason %d",
					    event->u.mlme.reason);
		else if (event->u.mlme.status == MLME_TIMEOUT)
4532
			CHECK_MLME_TRIGGER(stop_assoc_timeout,
4533 4534 4535
					   "ASSOC TIMEOUT");
	} else if (event->u.mlme.data == AUTH_EVENT) {
		if (event->u.mlme.status == MLME_DENIED)
4536
			CHECK_MLME_TRIGGER(stop_auth_denied,
4537 4538 4539
					   "DENIED AUTH: reason %d",
					   event->u.mlme.reason);
		else if (event->u.mlme.status == MLME_TIMEOUT)
4540
			CHECK_MLME_TRIGGER(stop_auth_timeout,
4541 4542
					   "AUTH TIMEOUT");
	} else if (event->u.mlme.data == DEAUTH_RX_EVENT) {
4543
		CHECK_MLME_TRIGGER(stop_rx_deauth,
4544 4545
				   "DEAUTH RX %d", event->u.mlme.reason);
	} else if (event->u.mlme.data == DEAUTH_TX_EVENT) {
4546
		CHECK_MLME_TRIGGER(stop_tx_deauth,
4547 4548 4549 4550 4551
				   "DEAUTH TX %d", event->u.mlme.reason);
	}
#undef CHECK_MLME_TRIGGER
}

4552 4553 4554 4555 4556 4557 4558
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;

4559 4560 4561
	trig = iwl_fw_dbg_trigger_on(&mvm->fwrt, ieee80211_vif_to_wdev(vif),
				     FW_DBG_TRIGGER_BA);
	if (!trig)
4562 4563 4564 4565 4566 4567 4568
		return;

	ba_trig = (void *)trig->data;

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

4569 4570 4571 4572
	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);
4573 4574 4575 4576 4577 4578 4579 4580 4581 4582 4583 4584 4585 4586 4587 4588
}

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:
4589 4590
		iwl_mvm_event_frame_timeout_callback(mvm, vif, event->u.ba.sta,
						     event->u.ba.tid);
4591 4592 4593 4594 4595 4596
		break;
	default:
		break;
	}
}

4597 4598 4599
void iwl_mvm_sync_rx_queues_internal(struct iwl_mvm *mvm,
				     struct iwl_mvm_internal_rxq_notif *notif,
				     u32 size)
4600 4601 4602 4603 4604 4605
{
	u32 qmask = BIT(mvm->trans->num_rx_queues) - 1;
	int ret;

	lockdep_assert_held(&mvm->mutex);

4606
	if (!iwl_mvm_has_new_rx_api(mvm))
4607 4608
		return;

4609 4610 4611 4612 4613
	notif->cookie = mvm->queue_sync_cookie;

	if (notif->sync)
		atomic_set(&mvm->queue_sync_counter,
			   mvm->trans->num_rx_queues);
4614

4615
	ret = iwl_mvm_notify_rx_queue(mvm, qmask, (u8 *)notif, size);
4616 4617 4618 4619
	if (ret) {
		IWL_ERR(mvm, "Failed to trigger RX queues sync (%d)\n", ret);
		goto out;
	}
4620

4621
	if (notif->sync) {
4622
		ret = wait_event_timeout(mvm->rx_sync_waitq,
4623 4624
					 atomic_read(&mvm->queue_sync_counter) == 0 ||
					 iwl_mvm_is_radio_killed(mvm),
4625
					 HZ);
4626 4627
		WARN_ON_ONCE(!ret && !iwl_mvm_is_radio_killed(mvm));
	}
4628 4629 4630 4631 4632 4633 4634 4635 4636

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);
4637 4638 4639 4640
	struct iwl_mvm_internal_rxq_notif data = {
		.type = IWL_MVM_RXQ_EMPTY,
		.sync = 1,
	};
4641 4642

	mutex_lock(&mvm->mutex);
4643
	iwl_mvm_sync_rx_queues_internal(mvm, &data, sizeof(data));
4644 4645 4646
	mutex_unlock(&mvm->mutex);
}

4647
const struct ieee80211_ops iwl_mvm_hw_ops = {
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4648 4649 4650
	.tx = iwl_mvm_mac_tx,
	.ampdu_action = iwl_mvm_mac_ampdu_action,
	.start = iwl_mvm_mac_start,
4651
	.reconfig_complete = iwl_mvm_mac_reconfig_complete,
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4652 4653 4654 4655
	.stop = iwl_mvm_mac_stop,
	.add_interface = iwl_mvm_mac_add_interface,
	.remove_interface = iwl_mvm_mac_remove_interface,
	.config = iwl_mvm_mac_config,
4656
	.prepare_multicast = iwl_mvm_prepare_multicast,
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4657
	.configure_filter = iwl_mvm_configure_filter,
4658
	.config_iface_filter = iwl_mvm_config_iface_filter,
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4659 4660 4661
	.bss_info_changed = iwl_mvm_bss_info_changed,
	.hw_scan = iwl_mvm_mac_hw_scan,
	.cancel_hw_scan = iwl_mvm_mac_cancel_hw_scan,
4662
	.sta_pre_rcu_remove = iwl_mvm_sta_pre_rcu_remove,
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4663 4664 4665
	.sta_state = iwl_mvm_mac_sta_state,
	.sta_notify = iwl_mvm_mac_sta_notify,
	.allow_buffered_frames = iwl_mvm_mac_allow_buffered_frames,
4666
	.release_buffered_frames = iwl_mvm_mac_release_buffered_frames,
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Johannes Berg 已提交
4667
	.set_rts_threshold = iwl_mvm_mac_set_rts_threshold,
4668
	.sta_rc_update = iwl_mvm_sta_rc_update,
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Johannes Berg 已提交
4669 4670
	.conf_tx = iwl_mvm_mac_conf_tx,
	.mgd_prepare_tx = iwl_mvm_mac_mgd_prepare_tx,
4671
	.mgd_protect_tdls_discover = iwl_mvm_mac_mgd_protect_tdls_discover,
4672
	.flush = iwl_mvm_mac_flush,
4673 4674
	.sched_scan_start = iwl_mvm_mac_sched_scan_start,
	.sched_scan_stop = iwl_mvm_mac_sched_scan_stop,
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Johannes Berg 已提交
4675 4676 4677 4678 4679 4680 4681 4682 4683
	.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,
4684
	.switch_vif_chanctx = iwl_mvm_switch_vif_chanctx,
J
Johannes Berg 已提交
4685

J
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4686 4687 4688 4689
	.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
4690

4691 4692
	.tx_last_beacon = iwl_mvm_tx_last_beacon,

J
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4693 4694
	.set_tim = iwl_mvm_set_tim,

4695
	.channel_switch = iwl_mvm_channel_switch,
4696
	.pre_channel_switch = iwl_mvm_pre_channel_switch,
4697
	.post_channel_switch = iwl_mvm_post_channel_switch,
4698

4699 4700 4701 4702
	.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,

4703 4704
	.event_callback = iwl_mvm_mac_event_callback,

4705 4706
	.sync_rx_queues = iwl_mvm_sync_rx_queues,

4707 4708
	CFG80211_TESTMODE_CMD(iwl_mvm_mac_testmode_cmd)

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Johannes Berg 已提交
4709 4710 4711 4712 4713 4714 4715 4716 4717 4718 4719
#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
4720
	.get_survey = iwl_mvm_mac_get_survey,
4721
	.sta_statistics = iwl_mvm_mac_sta_statistics,
4722 4723 4724
#ifdef CONFIG_IWLWIFI_DEBUGFS
	.sta_add_debugfs = iwl_mvm_sta_add_debugfs,
#endif
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Johannes Berg 已提交
4725
};