mac80211.c 134.1 KB
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/******************************************************************************
 *
 * This file is provided under a dual BSD/GPLv2 license.  When using or
 * redistributing this file, you may do so under either license.
 *
 * GPL LICENSE SUMMARY
 *
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 * Copyright(c) 2012 - 2014 Intel Corporation. All rights reserved.
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 * Copyright(c) 2013 - 2015 Intel Mobile Communications GmbH
 * Copyright(c) 2016 - 2017 Intel Deutschland GmbH
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 * 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) {
		u32 status = le32_to_cpu(resp->status);

		*changed = (status == MCC_RESP_NEW_CHAN_PROFILE ||
			    status == MCC_RESP_ILLEGAL);
	}
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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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const static u8 he_if_types_ext_capa_sta[] = {
	 [0] = WLAN_EXT_CAPA1_EXT_CHANNEL_SWITCHING,
	 [7] = WLAN_EXT_CAPA8_OPMODE_NOTIF,
	 [9] = WLAN_EXT_CAPA10_TWT_REQUESTER_SUPPORT,
};

const static struct wiphy_iftype_ext_capab he_iftypes_ext_capa[] = {
	{
		.iftype = NL80211_IFTYPE_STATION,
		.extended_capabilities = he_if_types_ext_capa_sta,
		.extended_capabilities_mask = he_if_types_ext_capa_sta,
		.extended_capabilities_len = sizeof(he_if_types_ext_capa_sta),
	},
};

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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, 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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	ieee80211_hw_set(hw, SUPPORTS_VHT_EXT_NSS_BW);
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	ieee80211_hw_set(hw, BUFF_MMPDU_TXQ);
	ieee80211_hw_set(hw, STA_MMPDU_TXQ);
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	ieee80211_hw_set(hw, TX_AMSDU);
	ieee80211_hw_set(hw, TX_FRAG_LIST);
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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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	hw->max_tx_fragments = mvm->trans->max_skb_frags;
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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;
544 545
		hw->wiphy->n_cipher_suites++;
	}
J
Johannes Berg 已提交
546

547
	ieee80211_hw_set(hw, SINGLE_SCAN_ON_ALL_BANDS);
548 549
	hw->wiphy->features |=
		NL80211_FEATURE_SCHED_SCAN_RANDOM_MAC_ADDR |
550 551
		NL80211_FEATURE_SCAN_RANDOM_MAC_ADDR |
		NL80211_FEATURE_ND_RANDOM_MAC_ADDR;
552

J
Johannes Berg 已提交
553 554
	hw->sta_data_size = sizeof(struct iwl_mvm_sta);
	hw->vif_data_size = sizeof(struct iwl_mvm_vif);
555
	hw->chanctx_data_size = sizeof(u16);
556
	hw->txq_data_size = sizeof(struct iwl_mvm_txq);
J
Johannes Berg 已提交
557 558

	hw->wiphy->interface_modes = BIT(NL80211_IFTYPE_STATION) |
559 560 561
		BIT(NL80211_IFTYPE_P2P_CLIENT) |
		BIT(NL80211_IFTYPE_AP) |
		BIT(NL80211_IFTYPE_P2P_GO) |
562 563
		BIT(NL80211_IFTYPE_P2P_DEVICE) |
		BIT(NL80211_IFTYPE_ADHOC);
J
Johannes Berg 已提交
564

565
	hw->wiphy->flags |= WIPHY_FLAG_IBSS_RSN;
566 567 568 569 570 571
	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
572

573
	hw->wiphy->flags |= WIPHY_FLAG_AP_UAPSD;
574
	hw->wiphy->flags |= WIPHY_FLAG_HAS_CHANNEL_SWITCH;
575

J
Johannes Berg 已提交
576 577 578 579
	hw->wiphy->iface_combinations = iwl_mvm_iface_combinations;
	hw->wiphy->n_iface_combinations =
		ARRAY_SIZE(iwl_mvm_iface_combinations);

580
	hw->wiphy->max_remain_on_channel_duration = 10000;
J
Johannes Berg 已提交
581 582 583 584 585 586
	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;
587 588 589 590 591 592 593

	/* 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
594
		       ETH_ALEN);
595
		mvm->addresses[i].addr[5]++;
J
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596 597 598
		hw->wiphy->n_addresses++;
	}

599 600
	iwl_mvm_reset_phy_ctxts(mvm);

601
	hw->wiphy->max_scan_ie_len = iwl_mvm_max_scan_ie_len(mvm);
602

J
Johannes Berg 已提交
603 604
	hw->wiphy->max_scan_ssids = PROBE_OPTION_MAX;

605
	BUILD_BUG_ON(IWL_MVM_SCAN_STOPPING_MASK & IWL_MVM_SCAN_MASK);
606 607 608
	BUILD_BUG_ON(IWL_MVM_MAX_UMAC_SCANS > HWEIGHT32(IWL_MVM_SCAN_MASK) ||
		     IWL_MVM_MAX_LMAC_SCANS > HWEIGHT32(IWL_MVM_SCAN_MASK));

609
	if (fw_has_capa(&mvm->fw->ucode_capa, IWL_UCODE_TLV_CAPA_UMAC_SCAN))
610 611 612 613
		mvm->max_scans = IWL_MVM_MAX_UMAC_SCANS;
	else
		mvm->max_scans = IWL_MVM_MAX_LMAC_SCANS;

614 615 616 617 618 619
	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
620

621 622 623 624
		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))
625
			hw->wiphy->bands[NL80211_BAND_5GHZ]->vht_cap.cap |=
626 627 628
				IEEE80211_VHT_CAP_SU_BEAMFORMER_CAPABLE;
	}

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Johannes Berg 已提交
629 630
	hw->wiphy->hw_version = mvm->trans->hw_id;

631
	if (iwlmvm_mod_params.power_scheme != IWL_POWER_SCHEME_CAM)
J
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632 633 634 635
		hw->wiphy->flags |= WIPHY_FLAG_PS_ON_BY_DEFAULT;
	else
		hw->wiphy->flags &= ~WIPHY_FLAG_PS_ON_BY_DEFAULT;

636
	hw->wiphy->max_sched_scan_reqs = 1;
637 638 639 640 641
	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;
642 643 644 645 646 647 648 649
	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;
650

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Johannes Berg 已提交
651
	hw->wiphy->features |= NL80211_FEATURE_P2P_GO_CTWIN |
652
			       NL80211_FEATURE_LOW_PRIORITY_SCAN |
653
			       NL80211_FEATURE_P2P_GO_OPPPS |
654
			       NL80211_FEATURE_AP_MODE_CHAN_WIDTH_CHANGE |
655
			       NL80211_FEATURE_DYNAMIC_SMPS |
656 657
			       NL80211_FEATURE_STATIC_SMPS |
			       NL80211_FEATURE_SUPPORTS_WMM_ADMISSION;
J
Johannes Berg 已提交
658

659 660
	if (fw_has_capa(&mvm->fw->ucode_capa,
			IWL_UCODE_TLV_CAPA_TXPOWER_INSERTION_SUPPORT))
661
		hw->wiphy->features |= NL80211_FEATURE_TX_POWER_INSERTION;
662 663
	if (fw_has_capa(&mvm->fw->ucode_capa,
			IWL_UCODE_TLV_CAPA_QUIET_PERIOD_SUPPORT))
664
		hw->wiphy->features |= NL80211_FEATURE_QUIET;
665

666 667
	if (fw_has_capa(&mvm->fw->ucode_capa,
			IWL_UCODE_TLV_CAPA_DS_PARAM_SET_IE_SUPPORT))
668 669 670
		hw->wiphy->features |=
			NL80211_FEATURE_DS_PARAM_SET_IE_IN_PROBES;

671 672
	if (fw_has_capa(&mvm->fw->ucode_capa,
			IWL_UCODE_TLV_CAPA_WFA_TPC_REP_IE_SUPPORT))
673 674
		hw->wiphy->features |= NL80211_FEATURE_WFA_TPC_IE_IN_PROBES;

675 676 677 678 679 680 681 682 683 684
	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
685 686 687 688 689 690 691 692 693 694 695
	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);
	}

696 697 698 699 700 701 702
	if (mvm->nvm_data->sku_cap_11ax_enable &&
	    !iwlwifi_mod_params.disable_11ax) {
		hw->wiphy->iftype_ext_capab = he_iftypes_ext_capa;
		hw->wiphy->num_iftype_ext_capab =
			ARRAY_SIZE(he_iftypes_ext_capa);
	}

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Johannes Berg 已提交
703 704 705
	mvm->rts_threshold = IEEE80211_MAX_RTS_THRESHOLD;

#ifdef CONFIG_PM_SLEEP
706 707 708 709
	if (iwl_mvm_is_d0i3_supported(mvm) &&
	    device_can_wakeup(mvm->trans->dev)) {
		mvm->wowlan.flags = WIPHY_WOWLAN_ANY;
		hw->wiphy->wowlan = &mvm->wowlan;
710 711
	}

712
	if (mvm->fw->img[IWL_UCODE_WOWLAN].num_sec &&
J
Johannes Berg 已提交
713 714 715
	    mvm->trans->ops->d3_suspend &&
	    mvm->trans->ops->d3_resume &&
	    device_can_wakeup(mvm->trans->dev)) {
716 717 718 719 720
		mvm->wowlan.flags |= WIPHY_WOWLAN_MAGIC_PKT |
				     WIPHY_WOWLAN_DISCONNECT |
				     WIPHY_WOWLAN_EAP_IDENTITY_REQ |
				     WIPHY_WOWLAN_RFKILL_RELEASE |
				     WIPHY_WOWLAN_NET_DETECT;
721
		if (!iwlwifi_mod_params.swcrypto)
722 723 724 725 726 727 728
			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;
729
		mvm->wowlan.max_nd_match_sets = IWL_SCAN_MAX_PROFILES;
730
		hw->wiphy->wowlan = &mvm->wowlan;
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Johannes Berg 已提交
731 732 733
	}
#endif

734 735 736 737 738
#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
739 740 741 742
	ret = iwl_mvm_leds_init(mvm);
	if (ret)
		return ret;

743 744
	if (fw_has_capa(&mvm->fw->ucode_capa,
			IWL_UCODE_TLV_CAPA_TDLS_SUPPORT)) {
A
Arik Nemtsov 已提交
745 746
		IWL_DEBUG_TDLS(mvm, "TDLS supported\n");
		hw->wiphy->flags |= WIPHY_FLAG_SUPPORTS_TDLS;
747
		ieee80211_hw_set(hw, TDLS_WIDER_BW);
A
Arik Nemtsov 已提交
748 749
	}

750 751
	if (fw_has_capa(&mvm->fw->ucode_capa,
			IWL_UCODE_TLV_CAPA_TDLS_CHANNEL_SWITCH)) {
752 753 754 755
		IWL_DEBUG_TDLS(mvm, "TDLS channel switch supported\n");
		hw->wiphy->features |= NL80211_FEATURE_TDLS_CHANNEL_SWITCH;
	}

756
	hw->netdev_features |= mvm->cfg->features;
757 758 759 760 761 762 763
	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;
	}
764

765 766 767
	ret = ieee80211_register_hw(mvm->hw);
	if (ret)
		iwl_mvm_leds_exit(mvm);
768
	mvm->init_status |= IWL_MVM_INIT_STATUS_REG_HW_INIT_COMPLETE;
769

770 771 772 773
	if (mvm->cfg->vht_mu_mimo_supported)
		wiphy_ext_feature_set(hw->wiphy,
				      NL80211_EXT_FEATURE_MU_MIMO_AIR_SNIFFER);

774
	return ret;
J
Johannes Berg 已提交
775 776
}

777 778 779 780 781 782 783 784 785 786 787 788 789 790 791 792 793 794 795 796 797 798 799 800
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);
801
	if (mvmsta->sta_id == IWL_MVM_INVALID_STA ||
802 803 804 805 806 807 808 809 810 811 812 813 814 815 816
	    mvmsta->sta_id != mvm->d0i3_ap_sta_id)
		goto out;

	__skb_queue_tail(&mvm->d0i3_tx, skb);

	/* 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
817 818 819 820 821
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);
822 823 824
	struct ieee80211_sta *sta = control->sta;
	struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
	struct ieee80211_hdr *hdr = (void *)skb->data;
825 826
	bool offchannel = IEEE80211_SKB_CB(skb)->flags &
		IEEE80211_TX_CTL_TX_OFFCHAN;
J
Johannes Berg 已提交
827

828 829
	if (iwl_mvm_is_radio_killed(mvm)) {
		IWL_DEBUG_DROP(mvm, "Dropping - RF/CT KILL\n");
J
Johannes Berg 已提交
830 831 832
		goto drop;
	}

833
	if (offchannel &&
834 835
	    !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
836 837
		goto drop;

838 839 840 841 842
	/* 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))
843 844
		sta = NULL;

845
	/* If there is no sta, and it's not offchannel - send through AP */
846 847
	if (!sta && info->control.vif->type == NL80211_IFTYPE_STATION &&
	    !offchannel) {
848 849 850 851 852 853 854 855 856 857 858 859
		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;
		}
	}

860
	if (sta) {
861 862
		if (iwl_mvm_defer_tx(mvm, sta, skb))
			return;
863
		if (iwl_mvm_tx_skb(mvm, skb, sta))
J
Johannes Berg 已提交
864 865 866 867 868 869 870 871 872 873 874
			goto drop;
		return;
	}

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

875 876 877 878 879 880
void iwl_mvm_mac_itxq_xmit(struct ieee80211_hw *hw, struct ieee80211_txq *txq)
{
	struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
	struct iwl_mvm_txq *mvmtxq = iwl_mvm_txq_from_mac80211(txq);
	struct sk_buff *skb = NULL;

881 882 883 884 885 886 887 888 889 890 891 892 893 894 895 896 897 898 899 900 901
	/*
	 * No need for threads to be pending here, they can leave the first
	 * taker all the work.
	 *
	 * mvmtxq->tx_request logic:
	 *
	 * If 0, no one is currently TXing, set to 1 to indicate current thread
	 * will now start TX and other threads should quit.
	 *
	 * If 1, another thread is currently TXing, set to 2 to indicate to
	 * that thread that there was another request. Since that request may
	 * have raced with the check whether the queue is empty, the TXing
	 * thread should check the queue's status one more time before leaving.
	 * This check is done in order to not leave any TX hanging in the queue
	 * until the next TX invocation (which may not even happen).
	 *
	 * If 2, another thread is currently TXing, and it will already double
	 * check the queue, so do nothing.
	 */
	if (atomic_fetch_add_unless(&mvmtxq->tx_request, 1, 2))
		return;
902 903

	rcu_read_lock();
904 905 906 907 908 909 910 911 912 913 914 915 916 917 918
	do {
		while (likely(!mvmtxq->stopped &&
			      (mvm->trans->system_pm_mode ==
			       IWL_PLAT_PM_MODE_DISABLED))) {
			skb = ieee80211_tx_dequeue(hw, txq);

			if (!skb)
				break;

			if (!txq->sta)
				iwl_mvm_tx_skb_non_sta(mvm, skb);
			else
				iwl_mvm_tx_skb(mvm, skb, txq->sta);
		}
	} while (atomic_dec_return(&mvmtxq->tx_request));
919 920 921 922 923 924 925 926 927 928 929 930 931 932 933 934 935 936 937 938 939 940 941 942 943 944 945 946 947 948 949 950 951 952 953 954 955 956 957 958 959 960 961 962 963 964 965
	rcu_read_unlock();
}

static void iwl_mvm_mac_wake_tx_queue(struct ieee80211_hw *hw,
				      struct ieee80211_txq *txq)
{
	struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
	struct iwl_mvm_txq *mvmtxq = iwl_mvm_txq_from_mac80211(txq);

	/*
	 * Please note that racing is handled very carefully here:
	 * mvmtxq->txq_id is updated during allocation, and mvmtxq->list is
	 * deleted afterwards.
	 * This means that if:
	 * mvmtxq->txq_id != INVALID_QUEUE && list_empty(&mvmtxq->list):
	 *	queue is allocated and we can TX.
	 * mvmtxq->txq_id != INVALID_QUEUE && !list_empty(&mvmtxq->list):
	 *	a race, should defer the frame.
	 * mvmtxq->txq_id == INVALID_QUEUE && list_empty(&mvmtxq->list):
	 *	need to allocate the queue and defer the frame.
	 * mvmtxq->txq_id == INVALID_QUEUE && !list_empty(&mvmtxq->list):
	 *	queue is already scheduled for allocation, no need to allocate,
	 *	should defer the frame.
	 */

	/* If the queue is allocated TX and return. */
	if (!txq->sta || mvmtxq->txq_id != IWL_MVM_INVALID_QUEUE) {
		/*
		 * Check that list is empty to avoid a race where txq_id is
		 * already updated, but the queue allocation work wasn't
		 * finished
		 */
		if (unlikely(txq->sta && !list_empty(&mvmtxq->list)))
			return;

		iwl_mvm_mac_itxq_xmit(hw, txq);
		return;
	}

	/* The list is being deleted only after the queue is fully allocated. */
	if (!list_empty(&mvmtxq->list))
		return;

	list_add_tail(&mvmtxq->list, &mvm->add_stream_txqs);
	schedule_work(&mvm->add_stream_wk);
}

966 967 968 969 970
#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);	\
971 972 973 974 975 976 977 978 979 980
	} 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;

981 982 983
	trig = iwl_fw_dbg_trigger_on(&mvm->fwrt, ieee80211_vif_to_wdev(vif),
				     FW_DBG_TRIGGER_BA);
	if (!trig)
984 985 986 987 988 989 990 991 992 993 994 995 996 997 998 999 1000 1001 1002 1003 1004 1005 1006 1007 1008 1009 1010 1011 1012 1013 1014 1015 1016 1017
		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;
	}
}

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static int iwl_mvm_mac_ampdu_action(struct ieee80211_hw *hw,
				    struct ieee80211_vif *vif,
1020
				    struct ieee80211_ampdu_params *params)
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1021 1022 1023
{
	struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
	int ret;
1024
	bool tx_agg_ref = false;
1025 1026 1027 1028
	struct ieee80211_sta *sta = params->sta;
	enum ieee80211_ampdu_mlme_action action = params->action;
	u16 tid = params->tid;
	u16 *ssn = &params->ssn;
1029
	u16 buf_size = params->buf_size;
1030
	bool amsdu = params->amsdu;
1031
	u16 timeout = params->timeout;
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1032 1033 1034 1035 1036 1037 1038

	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;

1039
	/* return from D0i3 before starting a new Tx aggregation */
1040 1041 1042 1043 1044 1045
	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:
1046
		/*
1047 1048 1049 1050 1051 1052
		 * 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.
1053
		 */
1054 1055 1056 1057 1058
		ret = iwl_mvm_ref_sync(mvm, IWL_MVM_REF_TX_AGG);
		if (ret)
			return ret;

		tx_agg_ref = true;
1059 1060 1061
		break;
	default:
		break;
1062 1063
	}

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1064 1065 1066 1067
	mutex_lock(&mvm->mutex);

	switch (action) {
	case IEEE80211_AMPDU_RX_START:
1068 1069 1070 1071 1072 1073 1074 1075 1076 1077
		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);
		}
1078
		if (!iwl_enable_rx_ampdu()) {
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1079 1080 1081
			ret = -EINVAL;
			break;
		}
1082 1083
		ret = iwl_mvm_sta_rx_agg(mvm, sta, tid, *ssn, true, buf_size,
					 timeout);
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1084 1085
		break;
	case IEEE80211_AMPDU_RX_STOP:
1086 1087
		ret = iwl_mvm_sta_rx_agg(mvm, sta, tid, 0, false, buf_size,
					 timeout);
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1088 1089
		break;
	case IEEE80211_AMPDU_TX_START:
1090
		if (!iwl_enable_tx_ampdu()) {
1091 1092 1093
			ret = -EINVAL;
			break;
		}
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1094 1095 1096
		ret = iwl_mvm_sta_tx_agg_start(mvm, vif, sta, tid, ssn);
		break;
	case IEEE80211_AMPDU_TX_STOP_CONT:
1097 1098
		ret = iwl_mvm_sta_tx_agg_stop(mvm, vif, sta, tid);
		break;
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1099 1100
	case IEEE80211_AMPDU_TX_STOP_FLUSH:
	case IEEE80211_AMPDU_TX_STOP_FLUSH_CONT:
1101
		ret = iwl_mvm_sta_tx_agg_flush(mvm, vif, sta, tid);
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1102 1103
		break;
	case IEEE80211_AMPDU_TX_OPERATIONAL:
1104 1105
		ret = iwl_mvm_sta_tx_agg_oper(mvm, vif, sta, tid,
					      buf_size, amsdu);
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1106 1107 1108 1109 1110 1111
		break;
	default:
		WARN_ON_ONCE(1);
		ret = -EINVAL;
		break;
	}
1112 1113 1114 1115 1116 1117 1118 1119 1120 1121

	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);
	}
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1122 1123
	mutex_unlock(&mvm->mutex);

1124 1125 1126 1127 1128 1129 1130
	/*
	 * 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);

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1131 1132 1133 1134 1135 1136 1137 1138 1139 1140
	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;
1141
	mvmvif->ap_sta_id = IWL_MVM_INVALID_STA;
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1142 1143 1144 1145 1146

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

1147
	mvmvif->phy_ctxt = NULL;
1148
	memset(&mvmvif->bf_data, 0, sizeof(mvmvif->bf_data));
1149
	memset(&mvmvif->probe_resp_data, 0, sizeof(mvmvif->probe_resp_data));
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1150 1151 1152 1153
}

static void iwl_mvm_restart_cleanup(struct iwl_mvm *mvm)
{
1154 1155 1156 1157
	/* 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
	 */
1158
	if (!test_and_clear_bit(IWL_MVM_STATUS_D3_RECONFIG, &mvm->status)) {
1159 1160
		mvm->fwrt.dump.desc = &iwl_dump_desc_assert;
		iwl_fw_error_dump(&mvm->fwrt);
1161
	}
1162

1163 1164 1165 1166 1167
	/* 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);

1168
	iwl_mvm_stop_device(mvm);
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1169

1170 1171
	mvm->cur_aid = 0;

1172
	mvm->scan_status = 0;
1173
	mvm->ps_disabled = false;
1174
	mvm->calibrating = false;
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1175 1176

	/* just in case one was running */
1177
	iwl_mvm_cleanup_roc_te(mvm);
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1178 1179
	ieee80211_remain_on_channel_expired(mvm->hw);

1180 1181 1182 1183 1184
	/*
	 * 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);
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1185

1186
	mvm->p2p_device_vif = NULL;
1187
	mvm->d0i3_ap_sta_id = IWL_MVM_INVALID_STA;
1188 1189

	iwl_mvm_reset_phy_ctxts(mvm);
1190
	memset(mvm->fw_key_table, 0, sizeof(mvm->fw_key_table));
1191 1192
	memset(&mvm->last_bt_notif, 0, sizeof(mvm->last_bt_notif));
	memset(&mvm->last_bt_ci_cmd, 0, sizeof(mvm->last_bt_ci_cmd));
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1193 1194 1195

	ieee80211_wake_queues(mvm->hw);

1196 1197 1198
	/* clear any stale d0i3 state */
	clear_bit(IWL_MVM_STATUS_IN_D0I3, &mvm->status);

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1199
	mvm->vif_count = 0;
1200
	mvm->rx_ba_sessions = 0;
1201
	mvm->fwrt.dump.conf = FW_DBG_INVALID;
1202
	mvm->monitor_on = false;
1203 1204 1205

	/* keep statistics ticking */
	iwl_mvm_accu_radio_stats(mvm);
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1206 1207
}

1208
int __iwl_mvm_mac_start(struct iwl_mvm *mvm)
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1209 1210 1211
{
	int ret;

1212
	lockdep_assert_held(&mvm->mutex);
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1213

1214 1215 1216 1217 1218 1219 1220
	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);
1221
		/* Clean up some internal and mac80211 state on restart */
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1222
		iwl_mvm_restart_cleanup(mvm);
1223 1224 1225 1226 1227 1228 1229 1230 1231
	} 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);
	}
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1232
	ret = iwl_mvm_up(mvm);
1233

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	iwl_fw_dbg_apply_point(&mvm->fwrt, IWL_FW_INI_APPLY_POST_INIT);

1236 1237 1238 1239 1240 1241
	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);
1242
#ifdef CONFIG_PM
1243
		iwl_mvm_d0i3_enable_tx(mvm, NULL);
1244
#endif
1245 1246
	}

1247 1248 1249 1250 1251 1252 1253 1254
	return ret;
}

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

1255 1256 1257 1258 1259 1260 1261 1262 1263 1264 1265 1266 1267
	/* 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);
	}

1268 1269
	mutex_lock(&mvm->mutex);
	ret = __iwl_mvm_mac_start(mvm);
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1270 1271 1272 1273 1274
	mutex_unlock(&mvm->mutex);

	return ret;
}

1275
static void iwl_mvm_restart_complete(struct iwl_mvm *mvm)
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1276 1277 1278 1279 1280 1281
{
	int ret;

	mutex_lock(&mvm->mutex);

	clear_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status);
1282
#ifdef CONFIG_PM
1283
	iwl_mvm_d0i3_enable_tx(mvm, NULL);
1284
#endif
1285
	ret = iwl_mvm_update_quotas(mvm, true, NULL);
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1286 1287 1288 1289
	if (ret)
		IWL_ERR(mvm, "Failed to update quotas after restart (%d)\n",
			ret);

1290 1291 1292
	/* allow transport/FW low power modes */
	iwl_mvm_unref(mvm, IWL_MVM_REF_UCODE_DOWN);

1293 1294 1295 1296 1297 1298
	/*
	 * 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);

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1299 1300 1301
	mutex_unlock(&mvm->mutex);
}

1302 1303
static void iwl_mvm_resume_complete(struct iwl_mvm *mvm)
{
1304 1305 1306 1307 1308 1309 1310
	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");
1311 1312
}

1313 1314 1315 1316 1317 1318 1319 1320 1321 1322 1323
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:
1324
		iwl_mvm_resume_complete(mvm);
1325 1326 1327 1328
		break;
	}
}

1329
void __iwl_mvm_mac_stop(struct iwl_mvm *mvm)
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1330
{
1331
	lockdep_assert_held(&mvm->mutex);
1332

1333 1334 1335 1336 1337
	/* 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));

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1338 1339 1340 1341 1342 1343
	/* 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.
	 */
1344
	flush_work(&mvm->roc_done_wk);
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1345

1346
	iwl_mvm_stop_device(mvm);
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1347 1348 1349 1350 1351

	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 */
1352
	iwl_mvm_del_aux_sta(mvm);
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1353

1354
	/*
1355 1356 1357
	 * 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.
1358 1359
	 * But make sure to cleanup interfaces that have gone down before/during
	 * HW restart was requested.
1360
	 */
1361 1362 1363
	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))
1364 1365
		ieee80211_iterate_interfaces(mvm->hw, 0,
					     iwl_mvm_cleanup_iterator, mvm);
1366

1367 1368 1369
	/* 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.
	 */
1370
	if (fw_has_capa(&mvm->fw->ucode_capa, IWL_UCODE_TLV_CAPA_UMAC_SCAN)) {
1371 1372
		int i;

1373
		for (i = 0; i < mvm->max_scans; i++) {
1374 1375 1376 1377
			if (WARN_ONCE(mvm->scan_uid_status[i],
				      "UMAC scan UID %d status was not cleaned\n",
				      i))
				mvm->scan_uid_status[i] = 0;
1378 1379
		}
	}
1380
}
1381

1382 1383 1384 1385 1386 1387
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);
1388
	flush_work(&mvm->add_stream_wk);
1389 1390 1391 1392 1393

	/*
	 * 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
1394
	 * debugfs files causes the firmware dump to be triggered, and if we
1395 1396 1397 1398 1399
	 * 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);

1400
	iwl_fw_cancel_dump(&mvm->fwrt);
1401
	cancel_delayed_work_sync(&mvm->cs_tx_unblock_dwork);
1402
	cancel_delayed_work_sync(&mvm->scan_timeout_dwork);
1403
	iwl_fw_free_dump_desc(&mvm->fwrt);
1404 1405 1406

	mutex_lock(&mvm->mutex);
	__iwl_mvm_mac_stop(mvm);
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	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);
}

1416 1417 1418 1419 1420 1421 1422 1423 1424 1425 1426 1427 1428 1429
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;
}

1430 1431 1432
static int iwl_mvm_set_tx_power(struct iwl_mvm *mvm, struct ieee80211_vif *vif,
				s16 tx_power)
{
1433 1434 1435 1436 1437 1438 1439
	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 =
1440
			cpu_to_le32(iwl_mvm_vif_from_mac80211(vif)->id),
1441
		.v5.v3.pwr_restriction = cpu_to_le16(8 * tx_power),
1442 1443 1444
	};

	if (tx_power == IWL_DEFAULT_MAX_TX_POWER)
1445
		cmd.v5.v3.pwr_restriction = cpu_to_le16(IWL_DEV_MAX_TX_POWER);
1446

1447 1448 1449 1450 1451 1452 1453 1454
	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);
1455 1456

	return iwl_mvm_send_cmd_pdu(mvm, REDUCE_TX_POWER_CMD, 0, len, &cmd);
1457 1458
}

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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;

1466
	mvmvif->mvm = mvm;
1467
	RCU_INIT_POINTER(mvmvif->probe_resp_data, NULL);
1468

1469 1470 1471 1472 1473 1474 1475 1476 1477
	/*
	 * 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;

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1478 1479 1480 1481 1482 1483 1484 1485
	/*
	 * 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);

1486 1487 1488 1489 1490
	/* 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;

1491
	/* Allocate resources for the MAC context, and add it to the fw  */
J
Johannes Berg 已提交
1492 1493 1494 1495
	ret = iwl_mvm_mac_ctxt_init(mvm, vif);
	if (ret)
		goto out_unlock;

1496 1497
	rcu_assign_pointer(mvm->vif_id_to_mac[mvmvif->id], vif);

1498
	/* Counting number of interfaces is needed for legacy PM */
1499 1500 1501
	if (vif->type != NL80211_IFTYPE_P2P_DEVICE)
		mvm->vif_count++;

J
Johannes Berg 已提交
1502 1503 1504 1505 1506 1507 1508 1509 1510 1511 1512
	/*
	 * 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
1513 1514
	if (vif->type == NL80211_IFTYPE_AP ||
	    vif->type == NL80211_IFTYPE_ADHOC) {
1515
		ret = iwl_mvm_alloc_bcast_sta(mvm, vif);
J
Johannes Berg 已提交
1516 1517 1518 1519 1520
		if (ret) {
			IWL_ERR(mvm, "Failed to allocate bcast sta\n");
			goto out_release;
		}

1521 1522 1523 1524 1525 1526 1527 1528 1529
		/*
		 * 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;
1530

1531
		iwl_mvm_vif_dbgfs_register(mvm, vif);
J
Johannes Berg 已提交
1532 1533 1534
		goto out_unlock;
	}

1535 1536
	mvmvif->features |= hw->netdev_features;

J
Johannes Berg 已提交
1537 1538 1539 1540
	ret = iwl_mvm_mac_ctxt_add(mvm, vif);
	if (ret)
		goto out_release;

1541
	ret = iwl_mvm_power_update_mac(mvm);
1542
	if (ret)
1543
		goto out_remove_mac;
J
Johannes Berg 已提交
1544

1545
	/* beacon filtering */
E
Emmanuel Grumbach 已提交
1546
	ret = iwl_mvm_disable_beacon_filter(mvm, vif, 0);
1547 1548 1549
	if (ret)
		goto out_remove_mac;

1550
	if (!mvm->bf_allowed_vif &&
1551
	    vif->type == NL80211_IFTYPE_STATION && !vif->p2p) {
1552
		mvm->bf_allowed_vif = mvmvif;
1553 1554
		vif->driver_flags |= IEEE80211_VIF_BEACON_FILTER |
				     IEEE80211_VIF_SUPPORTS_CQM_RSSI;
1555 1556
	}

J
Johannes Berg 已提交
1557 1558 1559 1560 1561 1562 1563
	/*
	 * 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) {

1564 1565 1566
		mvmvif->phy_ctxt = iwl_mvm_get_free_phy_ctxt(mvm);
		if (!mvmvif->phy_ctxt) {
			ret = -ENOSPC;
1567
			goto out_free_bf;
1568
		}
J
Johannes Berg 已提交
1569

1570
		iwl_mvm_phy_ctxt_ref(mvm, mvmvif->phy_ctxt);
J
Johannes Berg 已提交
1571 1572
		ret = iwl_mvm_binding_add_vif(mvm, vif);
		if (ret)
1573
			goto out_unref_phy;
J
Johannes Berg 已提交
1574

1575
		ret = iwl_mvm_add_p2p_bcast_sta(mvm, vif);
J
Johannes Berg 已提交
1576 1577 1578 1579 1580 1581 1582 1583
		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;
	}

1584 1585
	iwl_mvm_tcm_add_vif(mvm, vif);

1586 1587 1588
	if (vif->type == NL80211_IFTYPE_MONITOR)
		mvm->monitor_on = true;

1589
	iwl_mvm_vif_dbgfs_register(mvm, vif);
J
Johannes Berg 已提交
1590 1591 1592 1593
	goto out_unlock;

 out_unbind:
	iwl_mvm_binding_remove_vif(mvm, vif);
1594
 out_unref_phy:
1595
	iwl_mvm_phy_ctxt_unref(mvm, mvmvif->phy_ctxt);
1596 1597 1598
 out_free_bf:
	if (mvm->bf_allowed_vif == mvmvif) {
		mvm->bf_allowed_vif = NULL;
1599 1600
		vif->driver_flags &= ~(IEEE80211_VIF_BEACON_FILTER |
				       IEEE80211_VIF_SUPPORTS_CQM_RSSI);
1601
	}
J
Johannes Berg 已提交
1602 1603 1604 1605
 out_remove_mac:
	mvmvif->phy_ctxt = NULL;
	iwl_mvm_mac_ctxt_remove(mvm, vif);
 out_release:
1606 1607
	if (vif->type != NL80211_IFTYPE_P2P_DEVICE)
		mvm->vif_count--;
J
Johannes Berg 已提交
1608 1609 1610
 out_unlock:
	mutex_unlock(&mvm->mutex);

1611 1612
	iwl_mvm_unref(mvm, IWL_MVM_REF_ADD_IF);

J
Johannes Berg 已提交
1613 1614 1615
	return ret;
}

1616 1617
static void iwl_mvm_prepare_mac_removal(struct iwl_mvm *mvm,
					struct ieee80211_vif *vif)
J
Johannes Berg 已提交
1618 1619 1620 1621 1622 1623 1624 1625 1626
{
	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);
	}
1627 1628 1629 1630 1631 1632 1633
}

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);
1634
	struct iwl_probe_resp_data *probe_data;
1635 1636

	iwl_mvm_prepare_mac_removal(mvm, vif);
J
Johannes Berg 已提交
1637

1638 1639 1640 1641
	if (!(vif->type == NL80211_IFTYPE_AP ||
	      vif->type == NL80211_IFTYPE_ADHOC))
		iwl_mvm_tcm_rm_vif(mvm, vif);

J
Johannes Berg 已提交
1642 1643
	mutex_lock(&mvm->mutex);

1644 1645 1646 1647 1648 1649
	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);

1650 1651
	if (mvm->bf_allowed_vif == mvmvif) {
		mvm->bf_allowed_vif = NULL;
1652 1653
		vif->driver_flags &= ~(IEEE80211_VIF_BEACON_FILTER |
				       IEEE80211_VIF_SUPPORTS_CQM_RSSI);
1654 1655
	}

1656 1657
	iwl_mvm_vif_dbgfs_clean(mvm, vif);

J
Johannes Berg 已提交
1658 1659
	/*
	 * For AP/GO interface, the tear down of the resources allocated to the
1660
	 * interface is be handled as part of the stop_ap flow.
J
Johannes Berg 已提交
1661
	 */
J
Johannes Berg 已提交
1662 1663
	if (vif->type == NL80211_IFTYPE_AP ||
	    vif->type == NL80211_IFTYPE_ADHOC) {
1664 1665 1666 1667 1668 1669
#ifdef CONFIG_NL80211_TESTMODE
		if (vif == mvm->noa_vif) {
			mvm->noa_vif = NULL;
			mvm->noa_duration = 0;
		}
#endif
1670
		iwl_mvm_dealloc_int_sta(mvm, &mvmvif->mcast_sta);
1671
		iwl_mvm_dealloc_bcast_sta(mvm, vif);
J
Johannes Berg 已提交
1672 1673 1674 1675 1676
		goto out_release;
	}

	if (vif->type == NL80211_IFTYPE_P2P_DEVICE) {
		mvm->p2p_device_vif = NULL;
1677
		iwl_mvm_rm_p2p_bcast_sta(mvm, vif);
J
Johannes Berg 已提交
1678
		iwl_mvm_binding_remove_vif(mvm, vif);
1679
		iwl_mvm_phy_ctxt_unref(mvm, mvmvif->phy_ctxt);
J
Johannes Berg 已提交
1680 1681 1682
		mvmvif->phy_ctxt = NULL;
	}

1683
	if (mvm->vif_count && vif->type != NL80211_IFTYPE_P2P_DEVICE)
J
Johannes Berg 已提交
1684
		mvm->vif_count--;
1685

1686
	iwl_mvm_power_update_mac(mvm);
J
Johannes Berg 已提交
1687 1688
	iwl_mvm_mac_ctxt_remove(mvm, vif);

1689 1690
	RCU_INIT_POINTER(mvm->vif_id_to_mac[mvmvif->id], NULL);

1691 1692 1693
	if (vif->type == NL80211_IFTYPE_MONITOR)
		mvm->monitor_on = false;

J
Johannes Berg 已提交
1694 1695 1696 1697 1698
out_release:
	mutex_unlock(&mvm->mutex);
}

static int iwl_mvm_mac_config(struct ieee80211_hw *hw, u32 changed)
1699
{
J
Johannes Berg 已提交
1700 1701 1702
	return 0;
}

1703 1704 1705 1706 1707 1708 1709 1710 1711 1712 1713
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;
1714 1715 1716 1717 1718
	struct iwl_host_cmd hcmd = {
		.id = MCAST_FILTER_CMD,
		.flags = CMD_ASYNC,
		.dataflags[0] = IWL_HCMD_DFL_NOCOPY,
	};
1719 1720 1721 1722 1723 1724 1725 1726 1727 1728 1729 1730 1731 1732
	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);

1733 1734 1735 1736
	hcmd.len[0] = len;
	hcmd.data[0] = cmd;

	ret = iwl_mvm_send_cmd(mvm, &hcmd);
1737 1738 1739 1740 1741 1742 1743 1744
	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,
1745 1746
	};

1747 1748 1749 1750 1751
	lockdep_assert_held(&mvm->mutex);

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

1752
	ieee80211_iterate_active_interfaces_atomic(
1753 1754
		mvm->hw, IEEE80211_IFACE_ITER_NORMAL,
		iwl_mvm_mc_iface_iterator, &iter_data);
1755 1756
}

1757 1758
static u64 iwl_mvm_prepare_multicast(struct ieee80211_hw *hw,
				     struct netdev_hw_addr_list *mc_list)
J
Johannes Berg 已提交
1759
{
1760 1761 1762
	struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
	struct iwl_mcast_filter_cmd *cmd;
	struct netdev_hw_addr *addr;
1763 1764
	int addr_count;
	bool pass_all;
1765 1766
	int len;

1767 1768 1769 1770
	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)
1771 1772 1773 1774 1775 1776 1777 1778 1779 1780 1781 1782 1783 1784 1785 1786 1787 1788 1789 1790 1791
		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
1792 1793 1794 1795 1796 1797 1798
}

static void iwl_mvm_configure_filter(struct ieee80211_hw *hw,
				     unsigned int changed_flags,
				     unsigned int *total_flags,
				     u64 multicast)
{
1799 1800
	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
1801

1802
	mutex_lock(&mvm->mutex);
1803

1804 1805 1806
	/* replace previous configuration */
	kfree(mvm->mcast_filter_cmd);
	mvm->mcast_filter_cmd = cmd;
1807

1808 1809
	if (!cmd)
		goto out;
1810

1811 1812 1813 1814 1815 1816
	if (changed_flags & FIF_ALLMULTI)
		cmd->pass_all = !!(*total_flags & FIF_ALLMULTI);

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

1817 1818 1819 1820
	iwl_mvm_recalc_multicast(mvm);
out:
	mutex_unlock(&mvm->mutex);
	*total_flags = 0;
1821 1822
}

1823 1824 1825 1826 1827 1828 1829 1830 1831 1832 1833 1834 1835 1836 1837 1838 1839 1840 1841 1842 1843
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);
}

1844 1845 1846 1847 1848 1849 1850 1851 1852 1853 1854 1855 1856 1857 1858 1859 1860 1861 1862 1863 1864 1865 1866
#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;

1867 1868 1869 1870 1871 1872 1873 1874 1875 1876 1877 1878 1879 1880 1881 1882
		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;
1883 1884 1885 1886 1887 1888 1889 1890 1891 1892 1893 1894 1895 1896 1897 1898 1899 1900 1901
		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];

1902 1903 1904 1905 1906 1907
	/*
	 * enable filtering only for associated stations, but not for P2P
	 * Clients
	 */
	if (vif->type != NL80211_IFTYPE_STATION || vif->p2p ||
	    !vif->bss_conf.assoc)
1908 1909 1910 1911 1912 1913 1914 1915 1916 1917 1918 1919 1920 1921 1922 1923 1924 1925 1926 1927 1928 1929 1930 1931 1932 1933 1934 1935 1936 1937 1938 1939 1940 1941
		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++;
	}
}

1942 1943
bool iwl_mvm_bcast_filter_build_cmd(struct iwl_mvm *mvm,
				    struct iwl_bcast_filter_cmd *cmd)
1944 1945 1946
{
	struct iwl_bcast_iter_data iter_data = {
		.mvm = mvm,
1947
		.cmd = cmd,
1948 1949
	};

1950 1951 1952
	if (IWL_MVM_FW_BCAST_FILTER_PASS_ALL)
		return false;

1953 1954 1955 1956 1957 1958 1959 1960 1961 1962 1963 1964 1965 1966
	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
1967 1968 1969

	/* if no filters are configured, do nothing */
	if (!mvm->bcast_filters)
1970
		return false;
1971 1972 1973 1974 1975 1976

	/* 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);

1977 1978
	return true;
}
1979 1980

static int iwl_mvm_configure_bcast_filter(struct iwl_mvm *mvm)
1981 1982 1983 1984 1985 1986 1987 1988 1989
{
	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
1990
	return iwl_mvm_send_cmd_pdu(mvm, BCAST_FILTER_CMD, 0,
1991 1992 1993
				    sizeof(cmd), &cmd);
}
#else
1994
static inline int iwl_mvm_configure_bcast_filter(struct iwl_mvm *mvm)
1995 1996 1997 1998 1999
{
	return 0;
}
#endif

2000 2001 2002 2003 2004 2005 2006 2007 2008 2009 2010 2011 2012 2013 2014 2015
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);
}

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
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);
}

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 2115 2116 2117 2118 2119 2120 2121 2122 2123 2124 2125 2126 2127 2128 2129 2130 2131
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);

2132 2133 2134 2135 2136 2137 2138
	/*
	 * Initialize the PPE thresholds to "None" (7), as described in Table
	 * 9-262ac of 80211.ax/D3.0.
	 */
	memset(&sta_ctxt_cmd.pkt_ext, 7, sizeof(sta_ctxt_cmd.pkt_ext));

	/* If PPE Thresholds exist, parse them into a FW-familiar format. */
2139 2140 2141 2142 2143 2144 2145 2146 2147 2148 2149 2150 2151 2152 2153 2154 2155 2156 2157 2158 2159 2160 2161 2162 2163 2164 2165 2166 2167 2168 2169 2170 2171 2172 2173 2174 2175 2176 2177 2178 2179 2180 2181 2182 2183 2184 2185 2186 2187 2188 2189 2190 2191 2192 2193 2194 2195 2196 2197 2198 2199 2200 2201 2202 2203 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 2229 2230 2231 2232 2233
	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
2234 2235 2236 2237 2238 2239 2240 2241
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;

2242 2243 2244 2245 2246
	/*
	 * 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.
	 */
2247
	if (changes & BSS_CHANGED_ASSOC && bss_conf->assoc) {
2248 2249
		if (vif->bss_conf.he_support &&
		    !iwlwifi_mod_params.disable_11ax)
2250 2251
			iwl_mvm_cfg_he_sta(mvm, vif, mvmvif->ap_sta_id);

2252
		iwl_mvm_mac_ctxt_recalc_tsf_id(mvm, vif);
2253
	}
2254

2255 2256 2257 2258 2259 2260
	/* Update MU EDCA params */
	if (changes & BSS_CHANGED_QOS && mvmvif->associated &&
	    bss_conf->assoc && vif->bss_conf.he_support &&
	    !iwlwifi_mod_params.disable_11ax)
		iwl_mvm_cfg_he_sta(mvm, vif, mvmvif->ap_sta_id);

2261 2262 2263 2264 2265 2266 2267 2268 2269 2270
	/*
	 * 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
2271 2272 2273
	if (ret)
		IWL_ERR(mvm, "failed to update MAC %pM\n", vif->addr);

2274 2275 2276 2277
	/* 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
2278 2279
	if (changes & BSS_CHANGED_ASSOC) {
		if (bss_conf->assoc) {
2280 2281 2282 2283 2284
			/* 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
2285
			/* add quota for this interface */
2286
			ret = iwl_mvm_update_quotas(mvm, true, NULL);
J
Johannes Berg 已提交
2287 2288 2289 2290
			if (ret) {
				IWL_ERR(mvm, "failed to update quotas\n");
				return;
			}
2291 2292 2293 2294 2295 2296 2297 2298 2299 2300 2301 2302 2303 2304 2305 2306 2307 2308 2309

			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,
2310
							5 * dur, false);
2311
			}
2312 2313

			iwl_mvm_sf_update(mvm, vif, false);
2314
			iwl_mvm_power_vif_assoc(mvm, vif);
2315
			if (vif->p2p) {
2316
				iwl_mvm_ref(mvm, IWL_MVM_REF_P2P_CLIENT);
2317 2318 2319 2320
				iwl_mvm_update_smps(mvm, vif,
						    IWL_MVM_SMPS_REQ_PROT,
						    IEEE80211_SMPS_DYNAMIC);
			}
2321
		} else if (mvmvif->ap_sta_id != IWL_MVM_INVALID_STA) {
2322 2323 2324 2325 2326 2327 2328
			/*
			 * 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");

2329 2330 2331 2332 2333 2334 2335 2336 2337 2338 2339 2340 2341 2342 2343 2344 2345 2346 2347 2348 2349 2350 2351 2352 2353
			/*
			 * 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;
			}
2354

J
Johannes Berg 已提交
2355
			/* remove quota for this interface */
2356
			ret = iwl_mvm_update_quotas(mvm, false, NULL);
J
Johannes Berg 已提交
2357 2358
			if (ret)
				IWL_ERR(mvm, "failed to update quotas\n");
2359 2360 2361

			if (vif->p2p)
				iwl_mvm_unref(mvm, IWL_MVM_REF_P2P_CLIENT);
2362 2363 2364 2365 2366 2367 2368

			/* 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
2369
		}
2370

2371 2372
		/*
		 * The firmware tracks the MU-MIMO group on its own.
2373
		 * However, on HW restart we should restore this data.
2374 2375
		 */
		if (test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status) &&
2376
		    (changes & BSS_CHANGED_MU_GROUPS) && vif->mu_mimo_owner) {
2377 2378 2379 2380 2381 2382
			ret = iwl_mvm_update_mu_groups(mvm, vif);
			if (ret)
				IWL_ERR(mvm,
					"failed to update VHT MU_MIMO groups\n");
		}

2383
		iwl_mvm_recalc_multicast(mvm);
2384
		iwl_mvm_configure_bcast_filter(mvm);
2385

2386 2387 2388
		/* reset rssi values */
		mvmvif->bf_data.ave_beacon_signal = 0;

2389
		iwl_mvm_bt_coex_vif_change(mvm);
2390 2391
		iwl_mvm_update_smps(mvm, vif, IWL_MVM_SMPS_REQ_TT,
				    IEEE80211_SMPS_AUTOMATIC);
2392 2393 2394
		if (fw_has_capa(&mvm->fw->ucode_capa,
				IWL_UCODE_TLV_CAPA_UMAC_SCAN))
			iwl_mvm_config_scan(mvm);
2395 2396 2397
	}

	if (changes & BSS_CHANGED_BEACON_INFO) {
2398
		/*
2399
		 * We received a beacon from the associated AP so
2400 2401
		 * remove the session protection.
		 */
2402
		iwl_mvm_stop_session_protection(mvm, vif);
2403 2404 2405 2406 2407

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

2408 2409 2410 2411 2412 2413
	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)) {
2414 2415 2416 2417 2418
		ret = iwl_mvm_power_update_mac(mvm);
		if (ret)
			IWL_ERR(mvm, "failed to update power mode\n");
	}

2419 2420 2421 2422 2423
	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);
	}
2424 2425

	if (changes & BSS_CHANGED_CQM) {
2426
		IWL_DEBUG_MAC80211(mvm, "cqm info_changed\n");
2427 2428
		/* reset cqm events tracking */
		mvmvif->bf_data.last_cqm_event = 0;
2429 2430 2431 2432 2433 2434
		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");
		}
2435
	}
2436 2437

	if (changes & BSS_CHANGED_ARP_FILTER) {
2438
		IWL_DEBUG_MAC80211(mvm, "arp filter changed\n");
2439
		iwl_mvm_configure_bcast_filter(mvm);
2440
	}
J
Johannes Berg 已提交
2441 2442
}

J
Johannes Berg 已提交
2443 2444
static int iwl_mvm_start_ap_ibss(struct ieee80211_hw *hw,
				 struct ieee80211_vif *vif)
J
Johannes Berg 已提交
2445 2446 2447 2448 2449
{
	struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
	struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
	int ret;

2450 2451 2452 2453 2454 2455 2456 2457
	/*
	 * 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
2458 2459 2460 2461 2462 2463 2464
	mutex_lock(&mvm->mutex);

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

2465 2466 2467 2468 2469 2470 2471
	/*
	 * 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);

2472 2473
	mvmvif->ap_assoc_sta_count = 0;

J
Johannes Berg 已提交
2474 2475 2476 2477 2478 2479 2480 2481 2482 2483
	/* 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;

2484 2485 2486 2487 2488 2489 2490 2491 2492 2493 2494 2495 2496 2497 2498 2499 2500 2501 2502 2503 2504 2505 2506 2507 2508
	/*
	 * 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
		 */
2509
		ret = iwl_mvm_send_add_bcast_sta(mvm, vif);
2510 2511
		if (ret)
			goto out_unbind;
2512
		ret = iwl_mvm_add_mcast_sta(mvm, vif);
2513 2514 2515 2516 2517
		if (ret) {
			iwl_mvm_send_rm_bcast_sta(mvm, vif);
			goto out_unbind;
		}
	}
2518

2519 2520 2521
	/* must be set before quota calculations */
	mvmvif->ap_ibss_active = true;

2522 2523 2524 2525 2526 2527
	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);
	}

2528
	/* power updated needs to be done before quotas */
2529
	iwl_mvm_power_update_mac(mvm);
2530

2531
	ret = iwl_mvm_update_quotas(mvm, false, NULL);
J
Johannes Berg 已提交
2532
	if (ret)
2533
		goto out_quota_failed;
J
Johannes Berg 已提交
2534

J
Johannes Berg 已提交
2535
	/* Need to update the P2P Device MAC (only GO, IBSS is single vif) */
J
Johannes Berg 已提交
2536
	if (vif->p2p && mvm->p2p_device_vif)
2537
		iwl_mvm_mac_ctxt_changed(mvm, mvm->p2p_device_vif, false, NULL);
J
Johannes Berg 已提交
2538

2539 2540
	iwl_mvm_ref(mvm, IWL_MVM_REF_AP_IBSS);

2541
	iwl_mvm_bt_coex_vif_change(mvm);
E
Emmanuel Grumbach 已提交
2542

2543 2544 2545 2546
	/* we don't support TDLS during DCM */
	if (iwl_mvm_phy_ctx_count(mvm) > 1)
		iwl_mvm_teardown_tdls_peers(mvm);

2547
	goto out_unlock;
J
Johannes Berg 已提交
2548

2549
out_quota_failed:
2550
	iwl_mvm_power_update_mac(mvm);
2551
	mvmvif->ap_ibss_active = false;
2552
	iwl_mvm_send_rm_bcast_sta(mvm, vif);
2553
	iwl_mvm_rm_mcast_sta(mvm, vif);
J
Johannes Berg 已提交
2554 2555 2556 2557 2558 2559
out_unbind:
	iwl_mvm_binding_remove_vif(mvm, vif);
out_remove:
	iwl_mvm_mac_ctxt_remove(mvm, vif);
out_unlock:
	mutex_unlock(&mvm->mutex);
2560
	iwl_mvm_unref(mvm, IWL_MVM_REF_START_AP);
J
Johannes Berg 已提交
2561 2562 2563
	return ret;
}

J
Johannes Berg 已提交
2564 2565
static void iwl_mvm_stop_ap_ibss(struct ieee80211_hw *hw,
				 struct ieee80211_vif *vif)
J
Johannes Berg 已提交
2566 2567 2568 2569
{
	struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
	struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);

2570 2571
	iwl_mvm_prepare_mac_removal(mvm, vif);

J
Johannes Berg 已提交
2572 2573
	mutex_lock(&mvm->mutex);

2574
	/* Handle AP stop while in CSA */
2575 2576 2577
	if (rcu_access_pointer(mvm->csa_vif) == vif) {
		iwl_mvm_remove_time_event(mvm, mvmvif,
					  &mvmvif->time_event_data);
2578
		RCU_INIT_POINTER(mvm->csa_vif, NULL);
2579
		mvmvif->csa_countdown = false;
2580
	}
2581

2582 2583 2584 2585 2586
	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
2587
	mvmvif->ap_ibss_active = false;
2588
	mvm->ap_last_beacon_gp2 = 0;
J
Johannes Berg 已提交
2589

2590 2591 2592 2593 2594 2595
	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);
	}

2596
	iwl_mvm_bt_coex_vif_change(mvm);
E
Emmanuel Grumbach 已提交
2597

2598 2599
	iwl_mvm_unref(mvm, IWL_MVM_REF_AP_IBSS);

J
Johannes Berg 已提交
2600
	/* Need to update the P2P Device MAC (only GO, IBSS is single vif) */
J
Johannes Berg 已提交
2601
	if (vif->p2p && mvm->p2p_device_vif)
2602
		iwl_mvm_mac_ctxt_changed(mvm, mvm->p2p_device_vif, false, NULL);
J
Johannes Berg 已提交
2603

2604
	iwl_mvm_update_quotas(mvm, false, NULL);
2605 2606 2607 2608 2609 2610 2611 2612 2613 2614 2615

	/*
	 * 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);
2616
	iwl_mvm_send_rm_bcast_sta(mvm, vif);
2617 2618
	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
2619
	iwl_mvm_binding_remove_vif(mvm, vif);
2620

2621
	iwl_mvm_power_update_mac(mvm);
2622

J
Johannes Berg 已提交
2623 2624
	iwl_mvm_mac_ctxt_remove(mvm, vif);

2625 2626 2627
	kfree(mvmvif->ap_wep_key);
	mvmvif->ap_wep_key = NULL;

J
Johannes Berg 已提交
2628 2629 2630
	mutex_unlock(&mvm->mutex);
}

J
Johannes Berg 已提交
2631 2632 2633 2634 2635
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
2636
{
2637
	struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
2638

2639 2640 2641 2642
	/* Changes will be applied when the AP/IBSS is started */
	if (!mvmvif->ap_ibss_active)
		return;

2643
	if (changes & (BSS_CHANGED_ERP_CTS_PROT | BSS_CHANGED_HT |
2644
		       BSS_CHANGED_BANDWIDTH | BSS_CHANGED_QOS) &&
2645
	    iwl_mvm_mac_ctxt_changed(mvm, vif, false, NULL))
2646
		IWL_ERR(mvm, "failed to update MAC %pM\n", vif->addr);
2647

J
Johannes Berg 已提交
2648
	/* Need to send a new beacon template to the FW */
2649 2650 2651
	if (changes & BSS_CHANGED_BEACON &&
	    iwl_mvm_mac_ctxt_beacon_changed(mvm, vif))
		IWL_WARN(mvm, "Failed updating beacon data\n");
2652 2653 2654 2655 2656 2657

	if (changes & BSS_CHANGED_TXPOWER) {
		IWL_DEBUG_CALIB(mvm, "Changing TX Power to %d\n",
				bss_conf->txpower);
		iwl_mvm_set_tx_power(mvm, vif, bss_conf->txpower);
	}
J
Johannes Berg 已提交
2658 2659 2660 2661 2662 2663 2664 2665 2666
}

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);

2667 2668 2669 2670 2671 2672 2673 2674
	/*
	 * 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
2675 2676
	mutex_lock(&mvm->mutex);

2677
	if (changes & BSS_CHANGED_IDLE && !bss_conf->idle)
2678
		iwl_mvm_scan_stop(mvm, IWL_MVM_SCAN_SCHED, true);
2679

J
Johannes Berg 已提交
2680 2681 2682 2683 2684
	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
2685 2686
	case NL80211_IFTYPE_ADHOC:
		iwl_mvm_bss_info_changed_ap_ibss(mvm, vif, bss_conf, changes);
J
Johannes Berg 已提交
2687
		break;
2688 2689 2690 2691
	case NL80211_IFTYPE_MONITOR:
		if (changes & BSS_CHANGED_MU_GROUPS)
			iwl_mvm_update_mu_groups(mvm, vif);
		break;
J
Johannes Berg 已提交
2692 2693 2694 2695 2696 2697
	default:
		/* shouldn't happen */
		WARN_ON_ONCE(1);
	}

	mutex_unlock(&mvm->mutex);
2698
	iwl_mvm_unref(mvm, IWL_MVM_REF_BSS_CHANGED);
J
Johannes Berg 已提交
2699 2700 2701 2702
}

static int iwl_mvm_mac_hw_scan(struct ieee80211_hw *hw,
			       struct ieee80211_vif *vif,
2703
			       struct ieee80211_scan_request *hw_req)
J
Johannes Berg 已提交
2704 2705 2706 2707
{
	struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
	int ret;

2708 2709
	if (hw_req->req.n_channels == 0 ||
	    hw_req->req.n_channels > mvm->fw->ucode_capa.n_scan_channels)
J
Johannes Berg 已提交
2710 2711 2712
		return -EINVAL;

	mutex_lock(&mvm->mutex);
2713
	ret = iwl_mvm_reg_scan_start(mvm, vif, &hw_req->req, &hw_req->ies);
J
Johannes Berg 已提交
2714
	mutex_unlock(&mvm->mutex);
2715

J
Johannes Berg 已提交
2716 2717 2718 2719 2720 2721 2722 2723 2724 2725
	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);

2726 2727 2728 2729 2730 2731 2732
	/* 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.
	*/
2733
	if (mvm->scan_status & IWL_MVM_SCAN_REGULAR)
2734
		iwl_mvm_scan_stop(mvm, IWL_MVM_SCAN_REGULAR, true);
J
Johannes Berg 已提交
2735 2736 2737 2738 2739 2740

	mutex_unlock(&mvm->mutex);
}

static void
iwl_mvm_mac_allow_buffered_frames(struct ieee80211_hw *hw,
2741
				  struct ieee80211_sta *sta, u16 tids,
J
Johannes Berg 已提交
2742 2743 2744 2745 2746 2747
				  int num_frames,
				  enum ieee80211_frame_release_type reason,
				  bool more_data)
{
	struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);

2748
	/* Called when we need to transmit (a) frame(s) from mac80211 */
J
Johannes Berg 已提交
2749

2750 2751 2752 2753 2754 2755 2756 2757 2758 2759 2760 2761 2762
	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);

2763
	/* Called when we need to transmit (a) frame(s) from agg or dqa queue */
2764 2765 2766

	iwl_mvm_sta_modify_sleep_tx_count(mvm, sta, reason, num_frames,
					  tids, more_data, true);
J
Johannes Berg 已提交
2767 2768
}

2769 2770 2771
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
2772 2773
{
	struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2774
	struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta);
2775
	unsigned long txqs = 0, tids = 0;
2776
	int tid;
J
Johannes Berg 已提交
2777

2778 2779 2780 2781 2782 2783 2784 2785
	/*
	 * 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;

2786
	spin_lock_bh(&mvmsta->lock);
2787
	for (tid = 0; tid < ARRAY_SIZE(mvmsta->tid_data); tid++) {
2788 2789
		struct iwl_mvm_tid_data *tid_data = &mvmsta->tid_data[tid];

2790
		if (tid_data->txq_id == IWL_MVM_INVALID_QUEUE)
2791 2792
			continue;

2793 2794
		__set_bit(tid_data->txq_id, &txqs);

2795
		if (iwl_mvm_tid_queued(mvm, tid_data) == 0)
2796 2797 2798 2799 2800
			continue;

		__set_bit(tid, &tids);
	}

J
Johannes Berg 已提交
2801 2802
	switch (cmd) {
	case STA_NOTIFY_SLEEP:
2803
		for_each_set_bit(tid, &tids, IWL_MAX_TID_COUNT)
2804
			ieee80211_sta_set_buffered(sta, tid, true);
2805 2806 2807

		if (txqs)
			iwl_trans_freeze_txq_timer(mvm->trans, txqs, true);
J
Johannes Berg 已提交
2808 2809 2810 2811 2812 2813 2814
		/*
		 * 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:
2815
		if (WARN_ON(mvmsta->sta_id == IWL_MVM_INVALID_STA))
J
Johannes Berg 已提交
2816
			break;
2817 2818 2819

		if (txqs)
			iwl_trans_freeze_txq_timer(mvm->trans, txqs, false);
2820
		iwl_mvm_sta_modify_ps_wake(mvm, sta);
J
Johannes Berg 已提交
2821 2822 2823 2824
		break;
	default:
		break;
	}
2825
	spin_unlock_bh(&mvmsta->lock);
J
Johannes Berg 已提交
2826 2827
}

2828 2829 2830 2831 2832 2833 2834 2835 2836 2837 2838 2839 2840 2841 2842 2843 2844 2845 2846 2847
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();
2848
	sta = rcu_dereference(mvm->fw_id_to_mac_id[notif->sta_id]);
2849 2850 2851 2852 2853 2854 2855 2856 2857 2858 2859 2860 2861 2862 2863 2864 2865 2866 2867 2868 2869 2870 2871 2872 2873 2874 2875 2876 2877 2878 2879 2880 2881 2882 2883 2884 2885 2886 2887 2888
	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();
}

2889 2890 2891 2892 2893
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);
2894
	struct iwl_mvm_sta *mvm_sta = iwl_mvm_sta_from_mac80211(sta);
2895 2896 2897 2898 2899 2900 2901 2902 2903 2904 2905 2906 2907

	/*
	 * 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));
2908

2909 2910 2911
	mutex_unlock(&mvm->mutex);
}

2912 2913 2914
static void iwl_mvm_check_uapsd(struct iwl_mvm *mvm, struct ieee80211_vif *vif,
				const u8 *bssid)
{
2915 2916 2917 2918 2919 2920 2921 2922 2923 2924
	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;
	}

2925 2926 2927
	if (!(mvm->fw->ucode_capa.flags & IWL_UCODE_TLV_FLAGS_UAPSD_SUPPORT))
		return;

2928
	if (vif->p2p && !iwl_mvm_is_p2p_scm_uapsd_supported(mvm)) {
2929 2930 2931 2932
		vif->driver_flags &= ~IEEE80211_VIF_SUPPORTS_UAPSD;
		return;
	}

2933 2934
	if (!vif->p2p &&
	    (iwlwifi_mod_params.uapsd_disable & IWL_DISABLE_UAPSD_BSS)) {
2935 2936 2937 2938
		vif->driver_flags &= ~IEEE80211_VIF_SUPPORTS_UAPSD;
		return;
	}

2939 2940 2941 2942 2943 2944 2945
	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;
		}
	}

2946 2947 2948
	vif->driver_flags |= IEEE80211_VIF_SUPPORTS_UAPSD;
}

2949 2950 2951 2952 2953 2954 2955 2956
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;

2957 2958 2959
	trig = iwl_fw_dbg_trigger_on(&mvm->fwrt, ieee80211_vif_to_wdev(vif),
				     FW_DBG_TRIGGER_TDLS);
	if (!trig)
2960 2961 2962 2963 2964 2965 2966 2967 2968 2969 2970
		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;

2971 2972 2973
	iwl_fw_dbg_collect_trig(&mvm->fwrt, trig,
				"TDLS event occurred, peer %pM, action %d",
				peer_addr, action);
2974 2975
}

J
Johannes Berg 已提交
2976 2977 2978 2979 2980 2981 2982 2983
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);
2984
	struct iwl_mvm_sta *mvm_sta = iwl_mvm_sta_from_mac80211(sta);
J
Johannes Berg 已提交
2985 2986 2987 2988 2989 2990 2991 2992 2993
	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;

2994 2995 2996 2997 2998 2999 3000 3001 3002 3003 3004 3005 3006 3007
	/*
	 * 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 &&
3008
	    new_state == IEEE80211_STA_NOTEXIST) {
3009 3010 3011 3012 3013 3014 3015 3016
		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
3017
	mutex_lock(&mvm->mutex);
3018
	/* track whether or not the station is associated */
3019
	mvm_sta->sta_state = new_state;
3020

J
Johannes Berg 已提交
3021 3022
	if (old_state == IEEE80211_STA_NOTEXIST &&
	    new_state == IEEE80211_STA_NONE) {
3023 3024 3025 3026 3027 3028 3029 3030 3031 3032 3033 3034 3035 3036 3037
		/*
		 * 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;
		}
3038 3039 3040

		if (sta->tdls &&
		    (vif->p2p ||
3041 3042
		     iwl_mvm_tdls_sta_count(mvm, NULL) ==
						IWL_MVM_TDLS_STA_COUNT ||
3043 3044 3045 3046 3047 3048
		     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
3049
		ret = iwl_mvm_add_sta(mvm, vif, sta);
3050
		if (sta->tdls && ret == 0) {
3051
			iwl_mvm_recalc_tdls_state(mvm, vif, true);
3052 3053 3054
			iwl_mvm_tdls_check_trigger(mvm, vif, sta->addr,
						   NL80211_TDLS_SETUP);
		}
3055 3056

		sta->max_rc_amsdu_len = 1;
J
Johannes Berg 已提交
3057 3058
	} else if (old_state == IEEE80211_STA_NONE &&
		   new_state == IEEE80211_STA_AUTH) {
3059 3060 3061 3062 3063
		/*
		 * 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;
3064
		iwl_mvm_check_uapsd(mvm, vif, sta->addr);
J
Johannes Berg 已提交
3065 3066 3067
		ret = 0;
	} else if (old_state == IEEE80211_STA_AUTH &&
		   new_state == IEEE80211_STA_ASSOC) {
3068 3069 3070
		if (vif->type == NL80211_IFTYPE_AP) {
			mvmvif->ap_assoc_sta_count++;
			iwl_mvm_mac_ctxt_changed(mvm, vif, false, NULL);
3071 3072 3073
			if (vif->bss_conf.he_support &&
			    !iwlwifi_mod_params.disable_11ax)
				iwl_mvm_cfg_he_sta(mvm, vif, mvm_sta->sta_id);
3074
		}
3075

3076 3077
		iwl_mvm_rs_rate_init(mvm, sta, mvmvif->phy_ctxt->channel->band,
				     false);
3078
		ret = iwl_mvm_update_sta(mvm, vif, sta);
J
Johannes Berg 已提交
3079 3080
	} else if (old_state == IEEE80211_STA_ASSOC &&
		   new_state == IEEE80211_STA_AUTHORIZED) {
3081 3082 3083 3084 3085

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

3086 3087 3088 3089
		if (sta->tdls)
			iwl_mvm_tdls_check_trigger(mvm, vif, sta->addr,
						   NL80211_TDLS_ENABLE_LINK);

3090
		/* enable beacon filtering */
3091
		WARN_ON(iwl_mvm_enable_beacon_filter(mvm, vif, 0));
3092

3093 3094
		iwl_mvm_rs_rate_init(mvm, sta, mvmvif->phy_ctxt->channel->band,
				     true);
3095

3096 3097 3098 3099 3100 3101 3102
		/* 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
3103 3104
	} else if (old_state == IEEE80211_STA_AUTHORIZED &&
		   new_state == IEEE80211_STA_ASSOC) {
3105
		/* disable beacon filtering */
E
Emmanuel Grumbach 已提交
3106
		WARN_ON(iwl_mvm_disable_beacon_filter(mvm, vif, 0));
J
Johannes Berg 已提交
3107 3108 3109
		ret = 0;
	} else if (old_state == IEEE80211_STA_ASSOC &&
		   new_state == IEEE80211_STA_AUTH) {
3110 3111 3112 3113
		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
3114 3115 3116 3117 3118 3119 3120
		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);
3121
		if (sta->tdls) {
3122
			iwl_mvm_recalc_tdls_state(mvm, vif, false);
3123 3124 3125
			iwl_mvm_tdls_check_trigger(mvm, vif, sta->addr,
						   NL80211_TDLS_DISABLE_LINK);
		}
3126 3127 3128 3129 3130 3131 3132 3133 3134 3135

		/* Remove STA key if this is an AP using WEP */
		if (vif->type == NL80211_IFTYPE_AP && mvmvif->ap_wep_key) {
			int rm_ret = iwl_mvm_remove_sta_key(mvm, vif, sta,
							    mvmvif->ap_wep_key);

			if (!ret)
				ret = rm_ret;
		}

J
Johannes Berg 已提交
3136 3137 3138
	} else {
		ret = -EIO;
	}
3139
 out_unlock:
J
Johannes Berg 已提交
3140 3141
	mutex_unlock(&mvm->mutex);

3142 3143 3144 3145 3146 3147 3148 3149 3150
	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
3151 3152 3153 3154 3155 3156 3157 3158 3159 3160 3161 3162
	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;
}

3163 3164 3165 3166 3167 3168 3169 3170 3171 3172 3173
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
3174 3175 3176 3177 3178 3179 3180 3181 3182 3183 3184 3185 3186 3187 3188 3189 3190
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);
3191
		ret = iwl_mvm_mac_ctxt_changed(mvm, vif, false, NULL);
J
Johannes Berg 已提交
3192 3193 3194 3195 3196 3197 3198
		mutex_unlock(&mvm->mutex);
		return ret;
	}
	return 0;
}

static void iwl_mvm_mac_mgd_prepare_tx(struct ieee80211_hw *hw,
3199 3200
				       struct ieee80211_vif *vif,
				       u16 req_duration)
J
Johannes Berg 已提交
3201 3202
{
	struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3203 3204
	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
3205

3206 3207 3208 3209 3210 3211 3212
	/*
	 * 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;

3213 3214 3215
	if (req_duration > duration)
		duration = req_duration;

J
Johannes Berg 已提交
3216 3217
	mutex_lock(&mvm->mutex);
	/* Try really hard to protect the session and hear a beacon */
3218
	iwl_mvm_protect_session(mvm, vif, duration, min_duration, 500, false);
J
Johannes Berg 已提交
3219
	mutex_unlock(&mvm->mutex);
3220 3221

	iwl_mvm_unref(mvm, IWL_MVM_REF_PREPARE_TX);
J
Johannes Berg 已提交
3222 3223
}

3224 3225 3226
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
3227
					struct ieee80211_scan_ies *ies)
3228 3229 3230 3231
{
	struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);

	int ret;
3232

3233 3234
	mutex_lock(&mvm->mutex);

3235
	if (!vif->bss_conf.idle) {
3236 3237 3238 3239
		ret = -EBUSY;
		goto out;
	}

3240
	ret = iwl_mvm_sched_scan_start(mvm, vif, req, ies, IWL_MVM_SCAN_SCHED);
3241

3242 3243 3244 3245 3246
out:
	mutex_unlock(&mvm->mutex);
	return ret;
}

3247 3248
static int iwl_mvm_mac_sched_scan_stop(struct ieee80211_hw *hw,
				       struct ieee80211_vif *vif)
3249 3250
{
	struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3251
	int ret;
3252 3253

	mutex_lock(&mvm->mutex);
3254 3255 3256 3257 3258 3259 3260 3261 3262

	/* 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.
	*/
3263
	if (!(mvm->scan_status & IWL_MVM_SCAN_SCHED)) {
3264 3265 3266 3267
		mutex_unlock(&mvm->mutex);
		return 0;
	}

3268
	ret = iwl_mvm_scan_stop(mvm, IWL_MVM_SCAN_SCHED, false);
3269
	mutex_unlock(&mvm->mutex);
3270
	iwl_mvm_wait_for_async_handlers(mvm);
3271

3272
	return ret;
3273 3274
}

J
Johannes Berg 已提交
3275 3276 3277 3278 3279 3280 3281
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);
3282 3283 3284
	struct iwl_mvm_sta *mvmsta;
	struct iwl_mvm_key_pn *ptk_pn;
	int keyidx = key->keyidx;
J
Johannes Berg 已提交
3285
	int ret;
3286
	u8 key_offset;
J
Johannes Berg 已提交
3287

3288
	if (iwlwifi_mod_params.swcrypto) {
J
Johannes Berg 已提交
3289 3290 3291 3292 3293 3294
		IWL_DEBUG_MAC80211(mvm, "leave - hwcrypto disabled\n");
		return -EOPNOTSUPP;
	}

	switch (key->cipher) {
	case WLAN_CIPHER_SUITE_TKIP:
3295 3296 3297 3298 3299 3300 3301 3302 3303
		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
3304
		break;
3305
	case WLAN_CIPHER_SUITE_CCMP:
3306 3307
	case WLAN_CIPHER_SUITE_GCMP:
	case WLAN_CIPHER_SUITE_GCMP_256:
3308 3309
		if (!iwl_mvm_has_new_tx_api(mvm))
			key->flags |= IEEE80211_KEY_FLAG_PUT_IV_SPACE;
3310
		break;
J
Johannes Berg 已提交
3311
	case WLAN_CIPHER_SUITE_AES_CMAC:
3312 3313
	case WLAN_CIPHER_SUITE_BIP_GMAC_128:
	case WLAN_CIPHER_SUITE_BIP_GMAC_256:
3314
		WARN_ON_ONCE(!ieee80211_hw_check(hw, MFP_CAPABLE));
J
Johannes Berg 已提交
3315 3316 3317
		break;
	case WLAN_CIPHER_SUITE_WEP40:
	case WLAN_CIPHER_SUITE_WEP104:
3318 3319 3320 3321 3322 3323 3324 3325 3326 3327 3328
		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;
		}

3329 3330 3331
		if (vif->type != NL80211_IFTYPE_STATION)
			return 0;
		break;
J
Johannes Berg 已提交
3332
	default:
3333 3334 3335 3336 3337 3338
		/* 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
3339 3340 3341 3342 3343 3344
	}

	mutex_lock(&mvm->mutex);

	switch (cmd) {
	case SET_KEY:
J
Johannes Berg 已提交
3345 3346 3347 3348 3349 3350
		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.
3351
			 * CMAC/GMAC in AP/IBSS modes must be done in software.
J
Johannes Berg 已提交
3352
			 */
3353 3354 3355
			if (key->cipher == WLAN_CIPHER_SUITE_AES_CMAC ||
			    key->cipher == WLAN_CIPHER_SUITE_BIP_GMAC_128 ||
			    key->cipher == WLAN_CIPHER_SUITE_BIP_GMAC_256)
3356 3357 3358
				ret = -EOPNOTSUPP;
			else
				ret = 0;
3359 3360 3361 3362 3363 3364 3365

			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;
			}
3366 3367
		}

3368 3369 3370 3371 3372 3373 3374 3375 3376 3377 3378
		/* 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;
		}

3379 3380 3381 3382
		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 ||
3383 3384
		     key->cipher == WLAN_CIPHER_SUITE_GCMP ||
		     key->cipher == WLAN_CIPHER_SUITE_GCMP_256)) {
3385 3386 3387 3388 3389
			struct ieee80211_key_seq seq;
			int tid, q;

			mvmsta = iwl_mvm_sta_from_mac80211(sta);
			WARN_ON(rcu_access_pointer(mvmsta->ptk_pn[keyidx]));
3390 3391
			ptk_pn = kzalloc(struct_size(ptk_pn, q,
						     mvm->trans->num_rx_queues),
3392 3393 3394 3395 3396 3397 3398 3399 3400 3401 3402 3403 3404 3405 3406 3407 3408
					 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);
		}

3409 3410 3411 3412 3413 3414
		/* 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
3415
		IWL_DEBUG_MAC80211(mvm, "set hwcrypto key\n");
3416
		ret = iwl_mvm_set_sta_key(mvm, vif, sta, key, key_offset);
J
Johannes Berg 已提交
3417 3418 3419 3420 3421 3422
		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
			 */
3423
			key->hw_key_idx = STA_KEY_IDX_INVALID;
J
Johannes Berg 已提交
3424 3425 3426 3427 3428
			ret = 0;
		}

		break;
	case DISABLE_KEY:
3429 3430 3431 3432 3433
		if (key->hw_key_idx == STA_KEY_IDX_INVALID) {
			ret = 0;
			break;
		}

3434 3435 3436
		if (sta && iwl_mvm_has_new_rx_api(mvm) &&
		    key->flags & IEEE80211_KEY_FLAG_PAIRWISE &&
		    (key->cipher == WLAN_CIPHER_SUITE_CCMP ||
3437 3438
		     key->cipher == WLAN_CIPHER_SUITE_GCMP ||
		     key->cipher == WLAN_CIPHER_SUITE_GCMP_256)) {
3439 3440 3441 3442 3443 3444 3445 3446 3447
			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
3448 3449 3450 3451 3452 3453 3454 3455 3456 3457 3458 3459 3460 3461 3462 3463 3464 3465 3466
		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
3467 3468 3469
	if (keyconf->hw_key_idx == STA_KEY_IDX_INVALID)
		return;

J
Johannes Berg 已提交
3470 3471 3472 3473
	iwl_mvm_update_tkip_key(mvm, vif, keyconf, sta, iv32, phase1key);
}


3474 3475 3476 3477 3478 3479 3480 3481 3482 3483 3484 3485 3486 3487 3488 3489 3490 3491 3492 3493
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,
3494
		     "Aux ROC: Received response from ucode: status=%d uid=%d\n",
3495 3496 3497 3498 3499 3500 3501 3502 3503 3504 3505 3506 3507
		     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;
}

3508 3509 3510 3511 3512
#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)
3513 3514 3515 3516 3517 3518 3519 3520
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;
3521
	static const u16 time_event_response[] = { HOT_SPOT_CMD };
3522
	struct iwl_notification_wait wait_time_event;
3523 3524 3525
	u32 dtim_interval = vif->bss_conf.dtim_period *
		vif->bss_conf.beacon_int;
	u32 req_dur, delay;
3526 3527 3528 3529 3530
	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),
3531 3532 3533 3534 3535 3536 3537 3538 3539 3540 3541 3542 3543 3544
	};
	struct iwl_hs20_roc_req_tail *tail = iwl_mvm_chan_info_cmd_tail(mvm,
		&aux_roc_req.channel_info);
	u16 len = sizeof(aux_roc_req) - iwl_mvm_chan_info_padding(mvm);

	/* Set the channel info data */
	iwl_mvm_set_chan_info(mvm, &aux_roc_req.channel_info, channel->hw_value,
			      (channel->band == NL80211_BAND_2GHZ) ?
			       PHY_BAND_24 : PHY_BAND_5,
			      PHY_VHT_CHANNEL_MODE20,
			      0);

	/* Set the time and duration */
	tail->apply_time = cpu_to_le32(iwl_read_prph(mvm->trans, time_reg));
3545

3546 3547 3548 3549 3550 3551 3552 3553 3554 3555 3556 3557 3558 3559 3560 3561 3562 3563 3564 3565 3566 3567 3568
	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;
		}
	}

3569 3570
	tail->duration = cpu_to_le32(req_dur);
	tail->apply_time_max_delay = cpu_to_le32(delay);
3571 3572 3573 3574 3575

	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);
3576
	/* Set the node address */
3577
	memcpy(tail->node_addr, vif->addr, ETH_ALEN);
3578

3579 3580 3581 3582 3583 3584 3585 3586 3587
	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;
	}

3588 3589 3590 3591 3592 3593 3594 3595 3596 3597 3598 3599 3600 3601 3602 3603 3604 3605 3606 3607
	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);

3608
	res = iwl_mvm_send_cmd_pdu(mvm, HOT_SPOT_CMD, 0, len,
3609 3610 3611 3612 3613 3614 3615 3616 3617 3618 3619 3620 3621 3622 3623 3624 3625 3626 3627 3628 3629 3630 3631
				   &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
3632 3633 3634
static int iwl_mvm_roc(struct ieee80211_hw *hw,
		       struct ieee80211_vif *vif,
		       struct ieee80211_channel *channel,
3635 3636
		       int duration,
		       enum ieee80211_roc_type type)
J
Johannes Berg 已提交
3637 3638
{
	struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3639
	struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
J
Johannes Berg 已提交
3640
	struct cfg80211_chan_def chandef;
3641 3642 3643 3644 3645
	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
3646

3647 3648 3649 3650
	/*
	 * 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.
	 */
3651 3652
	flush_work(&mvm->roc_done_wk);

3653 3654
	mutex_lock(&mvm->mutex);

3655 3656
	switch (vif->type) {
	case NL80211_IFTYPE_STATION:
3657 3658
		if (fw_has_capa(&mvm->fw->ucode_capa,
				IWL_UCODE_TLV_CAPA_HOTSPOT_SUPPORT)) {
3659 3660 3661 3662 3663 3664 3665
			/* 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;
3666
		goto out_unlock;
3667 3668 3669 3670 3671
	case NL80211_IFTYPE_P2P_DEVICE:
		/* handle below */
		break;
	default:
		IWL_ERR(mvm, "vif isn't P2P_DEVICE: %d\n", vif->type);
3672 3673
		ret = -EINVAL;
		goto out_unlock;
J
Johannes Berg 已提交
3674 3675
	}

3676 3677 3678 3679 3680 3681 3682 3683 3684 3685 3686 3687 3688 3689 3690 3691 3692 3693 3694 3695 3696 3697 3698 3699 3700 3701 3702 3703 3704 3705 3706 3707
	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
3708 3709
	cfg80211_chandef_create(&chandef, channel, NL80211_CHAN_NO_HT);

3710 3711 3712 3713 3714 3715 3716 3717 3718 3719 3720 3721 3722 3723 3724 3725 3726 3727 3728 3729 3730 3731 3732 3733 3734 3735 3736 3737 3738 3739 3740 3741 3742 3743 3744 3745 3746 3747 3748 3749 3750 3751 3752 3753 3754 3755
	/*
	 * 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
3756
	/* Schedule the time events */
3757
	ret = iwl_mvm_start_p2p_roc(mvm, vif, duration, type);
J
Johannes Berg 已提交
3758

3759
out_unlock:
J
Johannes Berg 已提交
3760 3761 3762 3763 3764 3765 3766 3767 3768 3769 3770 3771
	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);
3772
	iwl_mvm_stop_roc(mvm);
J
Johannes Berg 已提交
3773 3774 3775 3776 3777 3778
	mutex_unlock(&mvm->mutex);

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

3779 3780
static int __iwl_mvm_add_chanctx(struct iwl_mvm *mvm,
				 struct ieee80211_chanctx_conf *ctx)
J
Johannes Berg 已提交
3781
{
3782 3783
	u16 *phy_ctxt_id = (u16 *)ctx->drv_priv;
	struct iwl_mvm_phy_ctxt *phy_ctxt;
J
Johannes Berg 已提交
3784 3785
	int ret;

3786 3787
	lockdep_assert_held(&mvm->mutex);

3788
	IWL_DEBUG_MAC80211(mvm, "Add channel context\n");
3789 3790 3791 3792 3793 3794

	phy_ctxt = iwl_mvm_get_free_phy_ctxt(mvm);
	if (!phy_ctxt) {
		ret = -ENOSPC;
		goto out;
	}
J
Johannes Berg 已提交
3795

3796
	ret = iwl_mvm_phy_ctxt_changed(mvm, phy_ctxt, &ctx->min_def,
3797 3798
				       ctx->rx_chains_static,
				       ctx->rx_chains_dynamic);
3799 3800 3801 3802 3803
	if (ret) {
		IWL_ERR(mvm, "Failed to add PHY context\n");
		goto out;
	}

3804
	iwl_mvm_phy_ctxt_ref(mvm, phy_ctxt);
3805 3806
	*phy_ctxt_id = phy_ctxt->id;
out:
3807 3808 3809 3810 3811 3812 3813 3814 3815 3816 3817
	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
3818
	mutex_unlock(&mvm->mutex);
3819

J
Johannes Berg 已提交
3820 3821 3822
	return ret;
}

3823 3824 3825 3826 3827 3828 3829 3830 3831 3832 3833
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
3834 3835 3836 3837 3838 3839
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);
3840
	__iwl_mvm_remove_chanctx(mvm, ctx);
J
Johannes Berg 已提交
3841 3842 3843 3844 3845 3846 3847 3848
	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);
3849 3850
	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
3851

3852 3853 3854
	if (WARN_ONCE((phy_ctxt->ref > 1) &&
		      (changed & ~(IEEE80211_CHANCTX_CHANGE_WIDTH |
				   IEEE80211_CHANCTX_CHANGE_RX_CHAINS |
3855 3856
				   IEEE80211_CHANCTX_CHANGE_RADAR |
				   IEEE80211_CHANCTX_CHANGE_MIN_WIDTH)),
3857 3858 3859 3860
		      "Cannot change PHY. Ref=%d, changed=0x%X\n",
		      phy_ctxt->ref, changed))
		return;

J
Johannes Berg 已提交
3861
	mutex_lock(&mvm->mutex);
3862 3863 3864 3865 3866 3867 3868 3869 3870 3871 3872 3873

	/* 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;
	}

3874
	iwl_mvm_bt_coex_vif_change(mvm);
3875
	iwl_mvm_phy_ctxt_changed(mvm, phy_ctxt, &ctx->min_def,
J
Johannes Berg 已提交
3876 3877
				 ctx->rx_chains_static,
				 ctx->rx_chains_dynamic);
3878 3879

out_unlock:
J
Johannes Berg 已提交
3880 3881 3882
	mutex_unlock(&mvm->mutex);
}

3883 3884
static int __iwl_mvm_assign_vif_chanctx(struct iwl_mvm *mvm,
					struct ieee80211_vif *vif,
3885 3886
					struct ieee80211_chanctx_conf *ctx,
					bool switching_chanctx)
J
Johannes Berg 已提交
3887
{
3888 3889
	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
3890 3891 3892
	struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
	int ret;

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

3895
	mvmvif->phy_ctxt = phy_ctxt;
J
Johannes Berg 已提交
3896 3897 3898

	switch (vif->type) {
	case NL80211_IFTYPE_AP:
3899 3900
		/* only needed if we're switching chanctx (i.e. during CSA) */
		if (switching_chanctx) {
3901 3902 3903
			mvmvif->ap_ibss_active = true;
			break;
		}
3904
		/* fall through */
J
Johannes Berg 已提交
3905
	case NL80211_IFTYPE_ADHOC:
J
Johannes Berg 已提交
3906 3907
		/*
		 * The AP binding flow is handled as part of the start_ap flow
J
Johannes Berg 已提交
3908
		 * (in bss_info_changed), similarly for IBSS.
J
Johannes Berg 已提交
3909 3910
		 */
		ret = 0;
3911
		goto out;
J
Johannes Berg 已提交
3912
	case NL80211_IFTYPE_STATION:
3913
		mvmvif->csa_bcn_pending = false;
3914
		break;
J
Johannes Berg 已提交
3915
	case NL80211_IFTYPE_MONITOR:
3916 3917
		/* always disable PS when a monitor interface is active */
		mvmvif->ps_disabled = true;
J
Johannes Berg 已提交
3918 3919 3920
		break;
	default:
		ret = -EINVAL;
3921
		goto out;
J
Johannes Berg 已提交
3922 3923 3924 3925
	}

	ret = iwl_mvm_binding_add_vif(mvm, vif);
	if (ret)
3926
		goto out;
J
Johannes Berg 已提交
3927 3928

	/*
3929 3930 3931
	 * Power state must be updated before quotas,
	 * otherwise fw will complain.
	 */
3932
	iwl_mvm_power_update_mac(mvm);
3933 3934

	/* Setting the quota at this stage is only required for monitor
J
Johannes Berg 已提交
3935 3936 3937 3938
	 * interfaces. For the other types, the bss_info changed flow
	 * will handle quota settings.
	 */
	if (vif->type == NL80211_IFTYPE_MONITOR) {
3939
		mvmvif->monitor_active = true;
3940
		ret = iwl_mvm_update_quotas(mvm, false, NULL);
J
Johannes Berg 已提交
3941 3942
		if (ret)
			goto out_remove_binding;
3943 3944 3945 3946 3947

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

J
Johannes Berg 已提交
3948 3949
	}

3950
	/* Handle binding during CSA */
3951
	if (vif->type == NL80211_IFTYPE_AP) {
3952
		iwl_mvm_update_quotas(mvm, false, NULL);
3953
		iwl_mvm_mac_ctxt_changed(mvm, vif, false, NULL);
3954 3955
	}

3956
	if (switching_chanctx && vif->type == NL80211_IFTYPE_STATION) {
3957
		mvmvif->csa_bcn_pending = true;
3958

3959 3960 3961
		if (!fw_has_capa(&mvm->fw->ucode_capa,
				 IWL_UCODE_TLV_CAPA_CHANNEL_SWITCH_CMD)) {
			u32 duration = 3 * vif->bss_conf.beacon_int;
3962 3963


3964 3965 3966 3967 3968 3969 3970 3971 3972 3973 3974 3975 3976 3977 3978 3979 3980
			/* iwl_mvm_protect_session() reads directly from the
			 * device (the system time), so make sure it is
			 * available.
			 */
			ret = iwl_mvm_ref_sync(mvm, IWL_MVM_REF_PROTECT_CSA);
			if (ret)
				goto out_remove_binding;

			/* Protect the session to make sure we hear the first
			 * beacon on the new channel.
			 */
			iwl_mvm_protect_session(mvm, vif, duration, duration,
						vif->bss_conf.beacon_int / 2,
						true);

			iwl_mvm_unref(mvm, IWL_MVM_REF_PROTECT_CSA);
		}
3981

3982
		iwl_mvm_update_quotas(mvm, false, NULL);
3983 3984
	}

3985
	goto out;
J
Johannes Berg 已提交
3986

3987
out_remove_binding:
J
Johannes Berg 已提交
3988
	iwl_mvm_binding_remove_vif(mvm, vif);
3989
	iwl_mvm_power_update_mac(mvm);
3990
out:
J
Johannes Berg 已提交
3991 3992 3993 3994
	if (ret)
		mvmvif->phy_ctxt = NULL;
	return ret;
}
3995 3996 3997
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
3998 3999
{
	struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
4000
	int ret;
J
Johannes Berg 已提交
4001 4002

	mutex_lock(&mvm->mutex);
4003
	ret = __iwl_mvm_assign_vif_chanctx(mvm, vif, ctx, false);
4004 4005 4006 4007 4008 4009 4010
	mutex_unlock(&mvm->mutex);

	return ret;
}

static void __iwl_mvm_unassign_vif_chanctx(struct iwl_mvm *mvm,
					   struct ieee80211_vif *vif,
4011 4012
					   struct ieee80211_chanctx_conf *ctx,
					   bool switching_chanctx)
4013 4014
{
	struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
4015
	struct ieee80211_vif *disabled_vif = NULL;
4016 4017

	lockdep_assert_held(&mvm->mutex);
J
Johannes Berg 已提交
4018 4019 4020 4021

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

	switch (vif->type) {
J
Johannes Berg 已提交
4022
	case NL80211_IFTYPE_ADHOC:
4023
		goto out;
J
Johannes Berg 已提交
4024
	case NL80211_IFTYPE_MONITOR:
4025
		mvmvif->monitor_active = false;
4026
		mvmvif->ps_disabled = false;
4027
		iwl_mvm_rm_snif_sta(mvm, vif);
J
Johannes Berg 已提交
4028
		break;
4029 4030
	case NL80211_IFTYPE_AP:
		/* This part is triggered only during CSA */
4031
		if (!switching_chanctx || !mvmvif->ap_ibss_active)
4032
			goto out;
4033

4034 4035
		mvmvif->csa_countdown = false;

4036 4037 4038 4039 4040 4041
		/* 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);

4042
		mvmvif->ap_ibss_active = false;
4043 4044 4045 4046 4047 4048 4049
		break;
	case NL80211_IFTYPE_STATION:
		if (!switching_chanctx)
			break;

		disabled_vif = vif;

4050 4051 4052
		if (!fw_has_capa(&mvm->fw->ucode_capa,
				 IWL_UCODE_TLV_CAPA_CHANNEL_SWITCH_CMD))
			iwl_mvm_mac_ctxt_changed(mvm, vif, true, NULL);
4053
		break;
J
Johannes Berg 已提交
4054 4055 4056 4057
	default:
		break;
	}

4058
	iwl_mvm_update_quotas(mvm, false, disabled_vif);
4059
	iwl_mvm_binding_remove_vif(mvm, vif);
4060

4061
out:
4062
	mvmvif->phy_ctxt = NULL;
4063
	iwl_mvm_power_update_mac(mvm);
4064 4065 4066 4067 4068 4069 4070 4071 4072
}

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);
4073
	__iwl_mvm_unassign_vif_chanctx(mvm, vif, ctx, false);
J
Johannes Berg 已提交
4074 4075 4076
	mutex_unlock(&mvm->mutex);
}

4077 4078 4079
static int
iwl_mvm_switch_vif_chanctx_swap(struct iwl_mvm *mvm,
				struct ieee80211_vif_chanctx_switch *vifs)
4080 4081 4082 4083
{
	int ret;

	mutex_lock(&mvm->mutex);
4084
	__iwl_mvm_unassign_vif_chanctx(mvm, vifs[0].vif, vifs[0].old_ctx, true);
4085 4086 4087 4088 4089 4090 4091 4092
	__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;
	}

4093 4094
	ret = __iwl_mvm_assign_vif_chanctx(mvm, vifs[0].vif, vifs[0].new_ctx,
					   true);
4095 4096 4097 4098 4099 4100
	if (ret) {
		IWL_ERR(mvm,
			"failed to assign new_ctx during channel switch\n");
		goto out_remove;
	}

4101 4102 4103 4104
	/* 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);

4105 4106 4107 4108 4109 4110
	goto out;

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

out_reassign:
4111
	if (__iwl_mvm_add_chanctx(mvm, vifs[0].old_ctx)) {
4112 4113 4114 4115
		IWL_ERR(mvm, "failed to add old_ctx back after failure.\n");
		goto out_restart;
	}

4116 4117
	if (__iwl_mvm_assign_vif_chanctx(mvm, vifs[0].vif, vifs[0].old_ctx,
					 true)) {
4118 4119 4120 4121 4122 4123 4124 4125 4126 4127 4128 4129
		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);
4130 4131 4132 4133

	return ret;
}

4134 4135 4136 4137 4138 4139 4140 4141 4142 4143 4144 4145 4146 4147 4148 4149 4150 4151 4152 4153 4154 4155 4156 4157 4158 4159 4160 4161 4162 4163 4164 4165 4166 4167 4168 4169 4170 4171
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;
}

4172 4173 4174 4175 4176 4177 4178 4179 4180 4181 4182 4183 4184 4185 4186 4187 4188
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:
4189
		ret = iwl_mvm_switch_vif_chanctx_reassign(mvm, vifs);
4190 4191 4192 4193 4194 4195
		break;
	default:
		ret = -EOPNOTSUPP;
		break;
	}

4196 4197 4198
	return ret;
}

4199 4200 4201 4202 4203 4204 4205
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
4206 4207 4208 4209 4210
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);
4211
	struct iwl_mvm_sta *mvm_sta = iwl_mvm_sta_from_mac80211(sta);
J
Johannes Berg 已提交
4212 4213 4214 4215 4216 4217 4218 4219 4220

	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);
}

4221 4222 4223 4224
#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 },
4225
	[IWL_MVM_TM_ATTR_BEACON_FILTER_STATE] = { .type = NLA_U32 },
4226 4227 4228 4229 4230 4231 4232 4233 4234 4235
};

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;

4236 4237
	err = nla_parse(tb, IWL_MVM_TM_ATTR_MAX, data, len, iwl_mvm_tm_policy,
			NULL);
4238 4239 4240 4241 4242 4243 4244 4245 4246 4247 4248 4249 4250 4251 4252 4253 4254 4255 4256 4257
	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;

4258
		return iwl_mvm_update_quotas(mvm, true, NULL);
4259 4260 4261 4262 4263 4264 4265 4266
	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
4267 4268
			return iwl_mvm_enable_beacon_filter(mvm, vif, 0);
		return iwl_mvm_disable_beacon_filter(mvm, vif, 0);
4269 4270 4271 4272 4273 4274 4275 4276 4277 4278 4279 4280 4281 4282 4283 4284 4285 4286 4287 4288
	}

	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

4289 4290 4291 4292 4293 4294 4295 4296 4297 4298 4299 4300 4301 4302
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");
}

4303 4304 4305 4306 4307 4308 4309 4310 4311 4312 4313 4314 4315 4316 4317 4318 4319 4320 4321 4322 4323
static int iwl_mvm_schedule_client_csa(struct iwl_mvm *mvm,
				       struct ieee80211_vif *vif,
				       struct ieee80211_channel_switch *chsw)
{
	struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
	struct iwl_chan_switch_te_cmd cmd = {
		.mac_id = cpu_to_le32(FW_CMD_ID_AND_COLOR(mvmvif->id,
							  mvmvif->color)),
		.action = cpu_to_le32(FW_CTXT_ACTION_ADD),
		.tsf = cpu_to_le32(chsw->timestamp),
		.cs_count = chsw->count,
	};

	lockdep_assert_held(&mvm->mutex);

	return iwl_mvm_send_cmd_pdu(mvm,
				    WIDE_ID(MAC_CONF_GROUP,
					    CHANNEL_SWITCH_TIME_EVENT_CMD),
				    0, sizeof(cmd), &cmd);
}

4324 4325 4326
static int iwl_mvm_pre_channel_switch(struct ieee80211_hw *hw,
				      struct ieee80211_vif *vif,
				      struct ieee80211_channel_switch *chsw)
4327 4328
{
	struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
4329
	struct ieee80211_vif *csa_vif;
4330
	struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
4331
	u32 apply_time;
4332
	int ret;
4333 4334

	mutex_lock(&mvm->mutex);
4335

4336 4337
	mvmvif->csa_failed = false;

4338
	IWL_DEBUG_MAC80211(mvm, "pre CSA to freq %d\n",
4339
			   chsw->chandef.center_freq1);
4340

4341 4342 4343
	iwl_fw_dbg_trigger_simple_stop(&mvm->fwrt,
				       ieee80211_vif_to_wdev(vif),
				       FW_DBG_TRIGGER_CHANNEL_SWITCH);
4344

4345 4346 4347 4348 4349 4350 4351 4352 4353 4354 4355
	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;
		}

4356 4357 4358 4359 4360 4361 4362
		/* 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;
		}

4363
		rcu_assign_pointer(mvm->csa_vif, vif);
4364 4365 4366 4367 4368 4369 4370

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

4371 4372
		mvmvif->csa_target_freq = chsw->chandef.chan->center_freq;

4373
		break;
4374
	case NL80211_IFTYPE_STATION:
4375 4376
		/* Schedule the time event to a bit before beacon 1,
		 * to make sure we're in the new channel when the
4377 4378 4379
		 * GO/AP arrives. In case count <= 1 immediately schedule the
		 * TE (this might result with some packet loss or connection
		 * loss).
4380
		 */
4381 4382 4383 4384 4385 4386
		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);
4387 4388 4389 4390

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

4391 4392 4393 4394 4395 4396
		if (mvmvif->bf_data.bf_enabled) {
			ret = iwl_mvm_disable_beacon_filter(mvm, vif, 0);
			if (ret)
				goto out_unlock;
		}

4397 4398 4399 4400 4401 4402 4403
		if (fw_has_capa(&mvm->fw->ucode_capa,
				IWL_UCODE_TLV_CAPA_CHANNEL_SWITCH_CMD))
			iwl_mvm_schedule_client_csa(mvm, vif, chsw);
		else
			iwl_mvm_schedule_csa_period(mvm, vif,
						    vif->bss_conf.beacon_int,
						    apply_time);
4404
		break;
4405 4406 4407
	default:
		break;
	}
4408

4409 4410 4411 4412 4413
	mvmvif->ps_disabled = true;

	ret = iwl_mvm_power_update_ps(mvm);
	if (ret)
		goto out_unlock;
4414

4415 4416 4417
	/* we won't be on this channel any longer */
	iwl_mvm_teardown_tdls_peers(mvm);

4418 4419
out_unlock:
	mutex_unlock(&mvm->mutex);
4420 4421

	return ret;
4422 4423
}

4424 4425 4426 4427 4428 4429 4430 4431 4432
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);

4433 4434 4435 4436 4437 4438
	if (mvmvif->csa_failed) {
		mvmvif->csa_failed = false;
		ret = -EIO;
		goto out_unlock;
	}

4439 4440 4441
	if (vif->type == NL80211_IFTYPE_STATION) {
		struct iwl_mvm_sta *mvmsta;

4442
		mvmvif->csa_bcn_pending = false;
4443 4444 4445 4446 4447 4448 4449 4450 4451 4452 4453
		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);
4454 4455 4456 4457

		ret = iwl_mvm_enable_beacon_filter(mvm, vif, 0);
		if (ret)
			goto out_unlock;
4458 4459

		iwl_mvm_stop_session_protection(mvm, vif);
4460 4461
	}

4462 4463 4464 4465
	mvmvif->ps_disabled = false;

	ret = iwl_mvm_power_update_ps(mvm);

4466
out_unlock:
4467 4468 4469 4470 4471
	mutex_unlock(&mvm->mutex);

	return ret;
}

4472 4473
static void iwl_mvm_flush_no_vif(struct iwl_mvm *mvm, u32 queues, bool drop)
{
4474 4475
	int i;

4476
	if (!iwl_mvm_has_new_tx_api(mvm)) {
4477 4478
		if (drop) {
			mutex_lock(&mvm->mutex);
4479
			iwl_mvm_flush_tx_path(mvm,
4480
				iwl_mvm_flushable_queues(mvm) & queues, 0);
4481 4482
			mutex_unlock(&mvm->mutex);
		} else {
4483
			iwl_trans_wait_tx_queues_empty(mvm->trans, queues);
4484
		}
4485 4486
		return;
	}
4487

4488 4489 4490
	mutex_lock(&mvm->mutex);
	for (i = 0; i < ARRAY_SIZE(mvm->fw_id_to_mac_id); i++) {
		struct ieee80211_sta *sta;
4491

4492 4493 4494 4495
		sta = rcu_dereference_protected(mvm->fw_id_to_mac_id[i],
						lockdep_is_held(&mvm->mutex));
		if (IS_ERR_OR_NULL(sta))
			continue;
4496

4497 4498 4499 4500 4501
		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));
4502
	}
4503
	mutex_unlock(&mvm->mutex);
4504 4505
}

4506 4507 4508 4509 4510 4511
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;
4512 4513 4514
	struct ieee80211_sta *sta;
	int i;
	u32 msk = 0;
4515

4516 4517 4518 4519 4520 4521
	if (!vif) {
		iwl_mvm_flush_no_vif(mvm, queues, drop);
		return;
	}

	if (vif->type != NL80211_IFTYPE_STATION)
4522 4523
		return;

4524
	/* Make sure we're done with the deferred traffic before flushing */
4525
	flush_work(&mvm->add_stream_wk);
4526

4527 4528 4529
	mutex_lock(&mvm->mutex);
	mvmvif = iwl_mvm_vif_from_mac80211(vif);

4530
	/* flush the AP-station and all TDLS peers */
4531
	for (i = 0; i < ARRAY_SIZE(mvm->fw_id_to_mac_id); i++) {
4532 4533 4534 4535 4536 4537 4538 4539 4540 4541 4542 4543
		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);

4544 4545 4546 4547 4548
		if (drop) {
			if (iwl_mvm_flush_sta(mvm, mvmsta, false, 0))
				IWL_ERR(mvm, "flush request fail\n");
		} else {
			msk |= mvmsta->tfd_queue_msk;
4549 4550
			if (iwl_mvm_has_new_tx_api(mvm))
				iwl_mvm_wait_sta_queues_empty(mvm, mvmsta);
4551
		}
4552
	}
4553

4554
	mutex_unlock(&mvm->mutex);
4555

4556 4557 4558
	/* this can take a while, and we may need/want other operations
	 * to succeed while doing this, so do it without the mutex held
	 */
4559
	if (!drop && !iwl_mvm_has_new_tx_api(mvm))
4560
		iwl_trans_wait_tx_queues_empty(mvm->trans, msk);
4561 4562
}

4563 4564 4565 4566 4567 4568 4569 4570 4571 4572 4573 4574
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;

4575 4576
	if (!fw_has_capa(&mvm->fw->ucode_capa,
			 IWL_UCODE_TLV_CAPA_RADIO_BEACON_STATS))
4577 4578 4579 4580
		return -ENOENT;

	mutex_lock(&mvm->mutex);

4581
	if (iwl_mvm_firmware_running(mvm)) {
4582
		ret = iwl_mvm_request_statistics(mvm, false);
4583 4584 4585 4586 4587 4588 4589 4590 4591 4592 4593 4594 4595 4596 4597 4598 4599 4600 4601 4602 4603 4604 4605 4606
		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);

4607
	ret = 0;
4608 4609 4610 4611 4612
 out:
	mutex_unlock(&mvm->mutex);
	return ret;
}

4613 4614 4615 4616 4617 4618 4619 4620 4621
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);

4622 4623
	if (mvmsta->avg_energy) {
		sinfo->signal_avg = mvmsta->avg_energy;
4624
		sinfo->filled |= BIT_ULL(NL80211_STA_INFO_SIGNAL_AVG);
4625 4626
	}

4627 4628 4629 4630 4631 4632 4633 4634 4635 4636 4637 4638 4639 4640 4641 4642 4643
	/* 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;
4644
	sinfo->filled |= BIT_ULL(NL80211_STA_INFO_BEACON_RX);
4645 4646 4647
	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;
4648
		sinfo->filled |= BIT_ULL(NL80211_STA_INFO_BEACON_SIGNAL_AVG);
4649 4650 4651 4652 4653
	}
 unlock:
	mutex_unlock(&mvm->mutex);
}

4654 4655 4656
static void iwl_mvm_event_mlme_callback(struct iwl_mvm *mvm,
					struct ieee80211_vif *vif,
					const struct ieee80211_event *event)
4657
{
4658 4659 4660 4661 4662
#define CHECK_MLME_TRIGGER(_cnt, _fmt...)				\
	do {								\
		if ((trig_mlme->_cnt) && --(trig_mlme->_cnt))		\
			break;						\
		iwl_fw_dbg_collect_trig(&(mvm)->fwrt, trig, _fmt);	\
4663 4664 4665 4666 4667
	} while (0)

	struct iwl_fw_dbg_trigger_tlv *trig;
	struct iwl_fw_dbg_trigger_mlme *trig_mlme;

4668 4669 4670
	trig = iwl_fw_dbg_trigger_on(&mvm->fwrt, ieee80211_vif_to_wdev(vif),
				     FW_DBG_TRIGGER_MLME);
	if (!trig)
4671 4672 4673 4674 4675 4676
		return;

	trig_mlme = (void *)trig->data;

	if (event->u.mlme.data == ASSOC_EVENT) {
		if (event->u.mlme.status == MLME_DENIED)
4677
			CHECK_MLME_TRIGGER(stop_assoc_denied,
4678 4679 4680
					   "DENIED ASSOC: reason %d",
					    event->u.mlme.reason);
		else if (event->u.mlme.status == MLME_TIMEOUT)
4681
			CHECK_MLME_TRIGGER(stop_assoc_timeout,
4682 4683 4684
					   "ASSOC TIMEOUT");
	} else if (event->u.mlme.data == AUTH_EVENT) {
		if (event->u.mlme.status == MLME_DENIED)
4685
			CHECK_MLME_TRIGGER(stop_auth_denied,
4686 4687 4688
					   "DENIED AUTH: reason %d",
					   event->u.mlme.reason);
		else if (event->u.mlme.status == MLME_TIMEOUT)
4689
			CHECK_MLME_TRIGGER(stop_auth_timeout,
4690 4691
					   "AUTH TIMEOUT");
	} else if (event->u.mlme.data == DEAUTH_RX_EVENT) {
4692
		CHECK_MLME_TRIGGER(stop_rx_deauth,
4693 4694
				   "DEAUTH RX %d", event->u.mlme.reason);
	} else if (event->u.mlme.data == DEAUTH_TX_EVENT) {
4695
		CHECK_MLME_TRIGGER(stop_tx_deauth,
4696 4697 4698 4699 4700
				   "DEAUTH TX %d", event->u.mlme.reason);
	}
#undef CHECK_MLME_TRIGGER
}

4701 4702 4703 4704 4705 4706 4707
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;

4708 4709 4710
	trig = iwl_fw_dbg_trigger_on(&mvm->fwrt, ieee80211_vif_to_wdev(vif),
				     FW_DBG_TRIGGER_BA);
	if (!trig)
4711 4712 4713 4714 4715 4716 4717
		return;

	ba_trig = (void *)trig->data;

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

4718 4719 4720 4721
	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);
4722 4723 4724 4725 4726 4727 4728 4729 4730 4731 4732 4733 4734 4735 4736 4737
}

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:
4738 4739
		iwl_mvm_event_frame_timeout_callback(mvm, vif, event->u.ba.sta,
						     event->u.ba.tid);
4740 4741 4742 4743 4744 4745
		break;
	default:
		break;
	}
}

4746 4747 4748
void iwl_mvm_sync_rx_queues_internal(struct iwl_mvm *mvm,
				     struct iwl_mvm_internal_rxq_notif *notif,
				     u32 size)
4749 4750 4751 4752 4753 4754
{
	u32 qmask = BIT(mvm->trans->num_rx_queues) - 1;
	int ret;

	lockdep_assert_held(&mvm->mutex);

4755
	if (!iwl_mvm_has_new_rx_api(mvm))
4756 4757
		return;

4758 4759 4760 4761 4762
	notif->cookie = mvm->queue_sync_cookie;

	if (notif->sync)
		atomic_set(&mvm->queue_sync_counter,
			   mvm->trans->num_rx_queues);
4763

4764
	ret = iwl_mvm_notify_rx_queue(mvm, qmask, (u8 *)notif, size);
4765 4766 4767 4768
	if (ret) {
		IWL_ERR(mvm, "Failed to trigger RX queues sync (%d)\n", ret);
		goto out;
	}
4769

4770
	if (notif->sync) {
4771
		ret = wait_event_timeout(mvm->rx_sync_waitq,
4772 4773
					 atomic_read(&mvm->queue_sync_counter) == 0 ||
					 iwl_mvm_is_radio_killed(mvm),
4774
					 HZ);
4775 4776
		WARN_ON_ONCE(!ret && !iwl_mvm_is_radio_killed(mvm));
	}
4777 4778 4779 4780 4781 4782 4783 4784 4785

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);
4786 4787 4788 4789
	struct iwl_mvm_internal_rxq_notif data = {
		.type = IWL_MVM_RXQ_EMPTY,
		.sync = 1,
	};
4790 4791

	mutex_lock(&mvm->mutex);
4792
	iwl_mvm_sync_rx_queues_internal(mvm, &data, sizeof(data));
4793 4794 4795
	mutex_unlock(&mvm->mutex);
}

4796 4797 4798 4799 4800 4801 4802 4803 4804 4805 4806 4807 4808 4809 4810 4811 4812 4813 4814 4815 4816 4817 4818 4819 4820 4821
static bool iwl_mvm_can_hw_csum(struct sk_buff *skb)
{
	u8 protocol = ip_hdr(skb)->protocol;

	if (!IS_ENABLED(CONFIG_INET))
		return false;

	return protocol == IPPROTO_TCP || protocol == IPPROTO_UDP;
}

static bool iwl_mvm_mac_can_aggregate(struct ieee80211_hw *hw,
				      struct sk_buff *head,
				      struct sk_buff *skb)
{
	struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);

	/* For now don't aggregate IPv6 in AMSDU */
	if (skb->protocol != htons(ETH_P_IP))
		return false;

	if (!iwl_mvm_is_csum_supported(mvm))
		return true;

	return iwl_mvm_can_hw_csum(skb) == iwl_mvm_can_hw_csum(head);
}

4822
const struct ieee80211_ops iwl_mvm_hw_ops = {
J
Johannes Berg 已提交
4823
	.tx = iwl_mvm_mac_tx,
4824
	.wake_tx_queue = iwl_mvm_mac_wake_tx_queue,
J
Johannes Berg 已提交
4825 4826
	.ampdu_action = iwl_mvm_mac_ampdu_action,
	.start = iwl_mvm_mac_start,
4827
	.reconfig_complete = iwl_mvm_mac_reconfig_complete,
J
Johannes Berg 已提交
4828 4829 4830 4831
	.stop = iwl_mvm_mac_stop,
	.add_interface = iwl_mvm_mac_add_interface,
	.remove_interface = iwl_mvm_mac_remove_interface,
	.config = iwl_mvm_mac_config,
4832
	.prepare_multicast = iwl_mvm_prepare_multicast,
J
Johannes Berg 已提交
4833
	.configure_filter = iwl_mvm_configure_filter,
4834
	.config_iface_filter = iwl_mvm_config_iface_filter,
J
Johannes Berg 已提交
4835 4836 4837
	.bss_info_changed = iwl_mvm_bss_info_changed,
	.hw_scan = iwl_mvm_mac_hw_scan,
	.cancel_hw_scan = iwl_mvm_mac_cancel_hw_scan,
4838
	.sta_pre_rcu_remove = iwl_mvm_sta_pre_rcu_remove,
J
Johannes Berg 已提交
4839 4840 4841
	.sta_state = iwl_mvm_mac_sta_state,
	.sta_notify = iwl_mvm_mac_sta_notify,
	.allow_buffered_frames = iwl_mvm_mac_allow_buffered_frames,
4842
	.release_buffered_frames = iwl_mvm_mac_release_buffered_frames,
J
Johannes Berg 已提交
4843
	.set_rts_threshold = iwl_mvm_mac_set_rts_threshold,
4844
	.sta_rc_update = iwl_mvm_sta_rc_update,
J
Johannes Berg 已提交
4845 4846
	.conf_tx = iwl_mvm_mac_conf_tx,
	.mgd_prepare_tx = iwl_mvm_mac_mgd_prepare_tx,
4847
	.mgd_protect_tdls_discover = iwl_mvm_mac_mgd_protect_tdls_discover,
4848
	.flush = iwl_mvm_mac_flush,
4849 4850
	.sched_scan_start = iwl_mvm_mac_sched_scan_start,
	.sched_scan_stop = iwl_mvm_mac_sched_scan_stop,
J
Johannes Berg 已提交
4851 4852 4853 4854 4855 4856 4857 4858 4859
	.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,
4860
	.switch_vif_chanctx = iwl_mvm_switch_vif_chanctx,
J
Johannes Berg 已提交
4861

J
Johannes Berg 已提交
4862 4863 4864 4865
	.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
4866

4867 4868
	.tx_last_beacon = iwl_mvm_tx_last_beacon,

J
Johannes Berg 已提交
4869 4870
	.set_tim = iwl_mvm_set_tim,

4871
	.channel_switch = iwl_mvm_channel_switch,
4872
	.pre_channel_switch = iwl_mvm_pre_channel_switch,
4873
	.post_channel_switch = iwl_mvm_post_channel_switch,
4874

4875 4876 4877 4878
	.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,

4879 4880
	.event_callback = iwl_mvm_mac_event_callback,

4881 4882
	.sync_rx_queues = iwl_mvm_sync_rx_queues,

4883 4884
	CFG80211_TESTMODE_CMD(iwl_mvm_mac_testmode_cmd)

J
Johannes Berg 已提交
4885 4886 4887 4888 4889 4890 4891 4892 4893 4894 4895
#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
4896
	.get_survey = iwl_mvm_mac_get_survey,
4897
	.sta_statistics = iwl_mvm_mac_sta_statistics,
4898
	.can_aggregate_in_amsdu = iwl_mvm_mac_can_aggregate,
4899 4900 4901
#ifdef CONFIG_IWLWIFI_DEBUGFS
	.sta_add_debugfs = iwl_mvm_sta_add_debugfs,
#endif
J
Johannes Berg 已提交
4902
};