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/*
 * Copyright (c) 2005-2011 Atheros Communications Inc.
 * Copyright (c) 2011-2013 Qualcomm Atheros, Inc.
 *
 * Permission to use, copy, modify, and/or distribute this software for any
 * purpose with or without fee is hereby granted, provided that the above
 * copyright notice and this permission notice appear in all copies.
 *
 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
 */

#include "mac.h"

#include <net/mac80211.h>
#include <linux/etherdevice.h>

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#include "hif.h"
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#include "core.h"
#include "debug.h"
#include "wmi.h"
#include "htt.h"
#include "txrx.h"
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#include "testmode.h"
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#include "wmi.h"
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#include "wmi-tlv.h"
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#include "wmi-ops.h"
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#include "wow.h"
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/*********/
/* Rates */
/*********/

static struct ieee80211_rate ath10k_rates[] = {
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	{ .bitrate = 10,
	  .hw_value = ATH10K_HW_RATE_CCK_LP_1M },
	{ .bitrate = 20,
	  .hw_value = ATH10K_HW_RATE_CCK_LP_2M,
	  .hw_value_short = ATH10K_HW_RATE_CCK_SP_2M,
	  .flags = IEEE80211_RATE_SHORT_PREAMBLE },
	{ .bitrate = 55,
	  .hw_value = ATH10K_HW_RATE_CCK_LP_5_5M,
	  .hw_value_short = ATH10K_HW_RATE_CCK_SP_5_5M,
	  .flags = IEEE80211_RATE_SHORT_PREAMBLE },
	{ .bitrate = 110,
	  .hw_value = ATH10K_HW_RATE_CCK_LP_11M,
	  .hw_value_short = ATH10K_HW_RATE_CCK_SP_11M,
	  .flags = IEEE80211_RATE_SHORT_PREAMBLE },
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	{ .bitrate = 60, .hw_value = ATH10K_HW_RATE_OFDM_6M },
	{ .bitrate = 90, .hw_value = ATH10K_HW_RATE_OFDM_9M },
	{ .bitrate = 120, .hw_value = ATH10K_HW_RATE_OFDM_12M },
	{ .bitrate = 180, .hw_value = ATH10K_HW_RATE_OFDM_18M },
	{ .bitrate = 240, .hw_value = ATH10K_HW_RATE_OFDM_24M },
	{ .bitrate = 360, .hw_value = ATH10K_HW_RATE_OFDM_36M },
	{ .bitrate = 480, .hw_value = ATH10K_HW_RATE_OFDM_48M },
	{ .bitrate = 540, .hw_value = ATH10K_HW_RATE_OFDM_54M },
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};

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#define ATH10K_MAC_FIRST_OFDM_RATE_IDX 4

#define ath10k_a_rates (ath10k_rates + ATH10K_MAC_FIRST_OFDM_RATE_IDX)
#define ath10k_a_rates_size (ARRAY_SIZE(ath10k_rates) - \
			     ATH10K_MAC_FIRST_OFDM_RATE_IDX)
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#define ath10k_g_rates (ath10k_rates + 0)
#define ath10k_g_rates_size (ARRAY_SIZE(ath10k_rates))

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static bool ath10k_mac_bitrate_is_cck(int bitrate)
{
	switch (bitrate) {
	case 10:
	case 20:
	case 55:
	case 110:
		return true;
	}

	return false;
}

static u8 ath10k_mac_bitrate_to_rate(int bitrate)
{
	return DIV_ROUND_UP(bitrate, 5) |
	       (ath10k_mac_bitrate_is_cck(bitrate) ? BIT(7) : 0);
}

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u8 ath10k_mac_hw_rate_to_idx(const struct ieee80211_supported_band *sband,
			     u8 hw_rate)
{
	const struct ieee80211_rate *rate;
	int i;

	for (i = 0; i < sband->n_bitrates; i++) {
		rate = &sband->bitrates[i];

		if (rate->hw_value == hw_rate)
			return i;
		else if (rate->flags & IEEE80211_RATE_SHORT_PREAMBLE &&
			 rate->hw_value_short == hw_rate)
			return i;
	}

	return 0;
}

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u8 ath10k_mac_bitrate_to_idx(const struct ieee80211_supported_band *sband,
			     u32 bitrate)
{
	int i;

	for (i = 0; i < sband->n_bitrates; i++)
		if (sband->bitrates[i].bitrate == bitrate)
			return i;

	return 0;
}

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static int ath10k_mac_get_max_vht_mcs_map(u16 mcs_map, int nss)
{
	switch ((mcs_map >> (2 * nss)) & 0x3) {
	case IEEE80211_VHT_MCS_SUPPORT_0_7: return BIT(8) - 1;
	case IEEE80211_VHT_MCS_SUPPORT_0_8: return BIT(9) - 1;
	case IEEE80211_VHT_MCS_SUPPORT_0_9: return BIT(10) - 1;
	}
	return 0;
}

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static u32
ath10k_mac_max_ht_nss(const u8 ht_mcs_mask[IEEE80211_HT_MCS_MASK_LEN])
{
	int nss;

	for (nss = IEEE80211_HT_MCS_MASK_LEN - 1; nss >= 0; nss--)
		if (ht_mcs_mask[nss])
			return nss + 1;

	return 1;
}

static u32
ath10k_mac_max_vht_nss(const u16 vht_mcs_mask[NL80211_VHT_NSS_MAX])
{
	int nss;

	for (nss = NL80211_VHT_NSS_MAX - 1; nss >= 0; nss--)
		if (vht_mcs_mask[nss])
			return nss + 1;

	return 1;
}
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/**********/
/* Crypto */
/**********/

static int ath10k_send_key(struct ath10k_vif *arvif,
			   struct ieee80211_key_conf *key,
			   enum set_key_cmd cmd,
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			   const u8 *macaddr, u32 flags)
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{
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	struct ath10k *ar = arvif->ar;
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	struct wmi_vdev_install_key_arg arg = {
		.vdev_id = arvif->vdev_id,
		.key_idx = key->keyidx,
		.key_len = key->keylen,
		.key_data = key->key,
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		.key_flags = flags,
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		.macaddr = macaddr,
	};

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	lockdep_assert_held(&arvif->ar->conf_mutex);

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	switch (key->cipher) {
	case WLAN_CIPHER_SUITE_CCMP:
		arg.key_cipher = WMI_CIPHER_AES_CCM;
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		key->flags |= IEEE80211_KEY_FLAG_GENERATE_IV_MGMT;
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		break;
	case WLAN_CIPHER_SUITE_TKIP:
		arg.key_cipher = WMI_CIPHER_TKIP;
		arg.key_txmic_len = 8;
		arg.key_rxmic_len = 8;
		break;
	case WLAN_CIPHER_SUITE_WEP40:
	case WLAN_CIPHER_SUITE_WEP104:
		arg.key_cipher = WMI_CIPHER_WEP;
		break;
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	case WLAN_CIPHER_SUITE_AES_CMAC:
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		WARN_ON(1);
		return -EINVAL;
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	default:
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		ath10k_warn(ar, "cipher %d is not supported\n", key->cipher);
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		return -EOPNOTSUPP;
	}

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	if (test_bit(ATH10K_FLAG_RAW_MODE, &ar->dev_flags)) {
		key->flags |= IEEE80211_KEY_FLAG_GENERATE_IV;
	}

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	if (cmd == DISABLE_KEY) {
		arg.key_cipher = WMI_CIPHER_NONE;
		arg.key_data = NULL;
	}

	return ath10k_wmi_vdev_install_key(arvif->ar, &arg);
}

static int ath10k_install_key(struct ath10k_vif *arvif,
			      struct ieee80211_key_conf *key,
			      enum set_key_cmd cmd,
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			      const u8 *macaddr, u32 flags)
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{
	struct ath10k *ar = arvif->ar;
	int ret;
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	unsigned long time_left;
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	lockdep_assert_held(&ar->conf_mutex);

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	reinit_completion(&ar->install_key_done);
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	if (arvif->nohwcrypt)
		return 1;

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	ret = ath10k_send_key(arvif, key, cmd, macaddr, flags);
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	if (ret)
		return ret;

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	time_left = wait_for_completion_timeout(&ar->install_key_done, 3 * HZ);
	if (time_left == 0)
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		return -ETIMEDOUT;

	return 0;
}

static int ath10k_install_peer_wep_keys(struct ath10k_vif *arvif,
					const u8 *addr)
{
	struct ath10k *ar = arvif->ar;
	struct ath10k_peer *peer;
	int ret;
	int i;
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	u32 flags;
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	lockdep_assert_held(&ar->conf_mutex);

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	if (WARN_ON(arvif->vif->type != NL80211_IFTYPE_AP &&
		    arvif->vif->type != NL80211_IFTYPE_ADHOC))
		return -EINVAL;

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	spin_lock_bh(&ar->data_lock);
	peer = ath10k_peer_find(ar, arvif->vdev_id, addr);
	spin_unlock_bh(&ar->data_lock);

	if (!peer)
		return -ENOENT;

	for (i = 0; i < ARRAY_SIZE(arvif->wep_keys); i++) {
		if (arvif->wep_keys[i] == NULL)
			continue;
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		switch (arvif->vif->type) {
		case NL80211_IFTYPE_AP:
			flags = WMI_KEY_PAIRWISE;

			if (arvif->def_wep_key_idx == i)
				flags |= WMI_KEY_TX_USAGE;

			ret = ath10k_install_key(arvif, arvif->wep_keys[i],
						 SET_KEY, addr, flags);
			if (ret < 0)
				return ret;
			break;
		case NL80211_IFTYPE_ADHOC:
			ret = ath10k_install_key(arvif, arvif->wep_keys[i],
						 SET_KEY, addr,
						 WMI_KEY_PAIRWISE);
			if (ret < 0)
				return ret;

			ret = ath10k_install_key(arvif, arvif->wep_keys[i],
						 SET_KEY, addr, WMI_KEY_GROUP);
			if (ret < 0)
				return ret;
			break;
		default:
			WARN_ON(1);
			return -EINVAL;
		}
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		spin_lock_bh(&ar->data_lock);
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		peer->keys[i] = arvif->wep_keys[i];
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		spin_unlock_bh(&ar->data_lock);
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	}

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	/* In some cases (notably with static WEP IBSS with multiple keys)
	 * multicast Tx becomes broken. Both pairwise and groupwise keys are
	 * installed already. Using WMI_KEY_TX_USAGE in different combinations
	 * didn't seem help. Using def_keyid vdev parameter seems to be
	 * effective so use that.
	 *
	 * FIXME: Revisit. Perhaps this can be done in a less hacky way.
	 */
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	if (arvif->vif->type != NL80211_IFTYPE_ADHOC)
		return 0;

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	if (arvif->def_wep_key_idx == -1)
		return 0;

	ret = ath10k_wmi_vdev_set_param(arvif->ar,
					arvif->vdev_id,
					arvif->ar->wmi.vdev_param->def_keyid,
					arvif->def_wep_key_idx);
	if (ret) {
		ath10k_warn(ar, "failed to re-set def wpa key idxon vdev %i: %d\n",
			    arvif->vdev_id, ret);
		return ret;
	}

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	return 0;
}

static int ath10k_clear_peer_keys(struct ath10k_vif *arvif,
				  const u8 *addr)
{
	struct ath10k *ar = arvif->ar;
	struct ath10k_peer *peer;
	int first_errno = 0;
	int ret;
	int i;
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	u32 flags = 0;
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	lockdep_assert_held(&ar->conf_mutex);

	spin_lock_bh(&ar->data_lock);
	peer = ath10k_peer_find(ar, arvif->vdev_id, addr);
	spin_unlock_bh(&ar->data_lock);

	if (!peer)
		return -ENOENT;

	for (i = 0; i < ARRAY_SIZE(peer->keys); i++) {
		if (peer->keys[i] == NULL)
			continue;

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		/* key flags are not required to delete the key */
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		ret = ath10k_install_key(arvif, peer->keys[i],
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					 DISABLE_KEY, addr, flags);
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		if (ret < 0 && first_errno == 0)
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			first_errno = ret;

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		if (ret < 0)
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			ath10k_warn(ar, "failed to remove peer wep key %d: %d\n",
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				    i, ret);

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		spin_lock_bh(&ar->data_lock);
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		peer->keys[i] = NULL;
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		spin_unlock_bh(&ar->data_lock);
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	}

	return first_errno;
}

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bool ath10k_mac_is_peer_wep_key_set(struct ath10k *ar, const u8 *addr,
				    u8 keyidx)
{
	struct ath10k_peer *peer;
	int i;

	lockdep_assert_held(&ar->data_lock);

	/* We don't know which vdev this peer belongs to,
	 * since WMI doesn't give us that information.
	 *
	 * FIXME: multi-bss needs to be handled.
	 */
	peer = ath10k_peer_find(ar, 0, addr);
	if (!peer)
		return false;

	for (i = 0; i < ARRAY_SIZE(peer->keys); i++) {
		if (peer->keys[i] && peer->keys[i]->keyidx == keyidx)
			return true;
	}

	return false;
}

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static int ath10k_clear_vdev_key(struct ath10k_vif *arvif,
				 struct ieee80211_key_conf *key)
{
	struct ath10k *ar = arvif->ar;
	struct ath10k_peer *peer;
	u8 addr[ETH_ALEN];
	int first_errno = 0;
	int ret;
	int i;
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	u32 flags = 0;
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	lockdep_assert_held(&ar->conf_mutex);

	for (;;) {
		/* since ath10k_install_key we can't hold data_lock all the
		 * time, so we try to remove the keys incrementally */
		spin_lock_bh(&ar->data_lock);
		i = 0;
		list_for_each_entry(peer, &ar->peers, list) {
			for (i = 0; i < ARRAY_SIZE(peer->keys); i++) {
				if (peer->keys[i] == key) {
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					ether_addr_copy(addr, peer->addr);
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					peer->keys[i] = NULL;
					break;
				}
			}

			if (i < ARRAY_SIZE(peer->keys))
				break;
		}
		spin_unlock_bh(&ar->data_lock);

		if (i == ARRAY_SIZE(peer->keys))
			break;
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		/* key flags are not required to delete the key */
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		ret = ath10k_install_key(arvif, key, DISABLE_KEY, addr, flags);
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		if (ret < 0 && first_errno == 0)
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			first_errno = ret;

		if (ret)
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			ath10k_warn(ar, "failed to remove key for %pM: %d\n",
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				    addr, ret);
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	}

	return first_errno;
}

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static int ath10k_mac_vif_update_wep_key(struct ath10k_vif *arvif,
					 struct ieee80211_key_conf *key)
{
	struct ath10k *ar = arvif->ar;
	struct ath10k_peer *peer;
	int ret;

	lockdep_assert_held(&ar->conf_mutex);

	list_for_each_entry(peer, &ar->peers, list) {
		if (!memcmp(peer->addr, arvif->vif->addr, ETH_ALEN))
			continue;

		if (!memcmp(peer->addr, arvif->bssid, ETH_ALEN))
			continue;

		if (peer->keys[key->keyidx] == key)
			continue;

		ath10k_dbg(ar, ATH10K_DBG_MAC, "mac vif vdev %i update key %i needs update\n",
			   arvif->vdev_id, key->keyidx);

		ret = ath10k_install_peer_wep_keys(arvif, peer->addr);
		if (ret) {
			ath10k_warn(ar, "failed to update wep keys on vdev %i for peer %pM: %d\n",
				    arvif->vdev_id, peer->addr, ret);
			return ret;
		}
	}

	return 0;
}

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/*********************/
/* General utilities */
/*********************/

static inline enum wmi_phy_mode
chan_to_phymode(const struct cfg80211_chan_def *chandef)
{
	enum wmi_phy_mode phymode = MODE_UNKNOWN;

	switch (chandef->chan->band) {
	case IEEE80211_BAND_2GHZ:
		switch (chandef->width) {
		case NL80211_CHAN_WIDTH_20_NOHT:
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			if (chandef->chan->flags & IEEE80211_CHAN_NO_OFDM)
				phymode = MODE_11B;
			else
				phymode = MODE_11G;
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			break;
		case NL80211_CHAN_WIDTH_20:
			phymode = MODE_11NG_HT20;
			break;
		case NL80211_CHAN_WIDTH_40:
			phymode = MODE_11NG_HT40;
			break;
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		case NL80211_CHAN_WIDTH_5:
		case NL80211_CHAN_WIDTH_10:
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		case NL80211_CHAN_WIDTH_80:
		case NL80211_CHAN_WIDTH_80P80:
		case NL80211_CHAN_WIDTH_160:
			phymode = MODE_UNKNOWN;
			break;
		}
		break;
	case IEEE80211_BAND_5GHZ:
		switch (chandef->width) {
		case NL80211_CHAN_WIDTH_20_NOHT:
			phymode = MODE_11A;
			break;
		case NL80211_CHAN_WIDTH_20:
			phymode = MODE_11NA_HT20;
			break;
		case NL80211_CHAN_WIDTH_40:
			phymode = MODE_11NA_HT40;
			break;
		case NL80211_CHAN_WIDTH_80:
			phymode = MODE_11AC_VHT80;
			break;
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		case NL80211_CHAN_WIDTH_5:
		case NL80211_CHAN_WIDTH_10:
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		case NL80211_CHAN_WIDTH_80P80:
		case NL80211_CHAN_WIDTH_160:
			phymode = MODE_UNKNOWN;
			break;
		}
		break;
	default:
		break;
	}

	WARN_ON(phymode == MODE_UNKNOWN);
	return phymode;
}

static u8 ath10k_parse_mpdudensity(u8 mpdudensity)
{
/*
 * 802.11n D2.0 defined values for "Minimum MPDU Start Spacing":
 *   0 for no restriction
 *   1 for 1/4 us
 *   2 for 1/2 us
 *   3 for 1 us
 *   4 for 2 us
 *   5 for 4 us
 *   6 for 8 us
 *   7 for 16 us
 */
	switch (mpdudensity) {
	case 0:
		return 0;
	case 1:
	case 2:
	case 3:
	/* Our lower layer calculations limit our precision to
	   1 microsecond */
		return 1;
	case 4:
		return 2;
	case 5:
		return 4;
	case 6:
		return 8;
	case 7:
		return 16;
	default:
		return 0;
	}
}

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int ath10k_mac_vif_chan(struct ieee80211_vif *vif,
			struct cfg80211_chan_def *def)
{
	struct ieee80211_chanctx_conf *conf;

	rcu_read_lock();
	conf = rcu_dereference(vif->chanctx_conf);
	if (!conf) {
		rcu_read_unlock();
		return -ENOENT;
	}

	*def = conf->def;
	rcu_read_unlock();

	return 0;
}

static void ath10k_mac_num_chanctxs_iter(struct ieee80211_hw *hw,
					 struct ieee80211_chanctx_conf *conf,
					 void *data)
{
	int *num = data;

	(*num)++;
}

static int ath10k_mac_num_chanctxs(struct ath10k *ar)
{
	int num = 0;

	ieee80211_iter_chan_contexts_atomic(ar->hw,
					    ath10k_mac_num_chanctxs_iter,
					    &num);

	return num;
}

static void
ath10k_mac_get_any_chandef_iter(struct ieee80211_hw *hw,
				struct ieee80211_chanctx_conf *conf,
				void *data)
{
	struct cfg80211_chan_def **def = data;

	*def = &conf->def;
}

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static int ath10k_peer_create(struct ath10k *ar, u32 vdev_id, const u8 *addr,
			      enum wmi_peer_type peer_type)
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{
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	struct ath10k_vif *arvif;
	int num_peers = 0;
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	int ret;

	lockdep_assert_held(&ar->conf_mutex);

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	num_peers = ar->num_peers;

	/* Each vdev consumes a peer entry as well */
	list_for_each_entry(arvif, &ar->arvifs, list)
		num_peers++;

	if (num_peers >= ar->max_num_peers)
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		return -ENOBUFS;

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	ret = ath10k_wmi_peer_create(ar, vdev_id, addr, peer_type);
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	if (ret) {
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		ath10k_warn(ar, "failed to create wmi peer %pM on vdev %i: %i\n",
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			    addr, vdev_id, ret);
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		return ret;
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	}
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	ret = ath10k_wait_for_peer_created(ar, vdev_id, addr);
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	if (ret) {
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		ath10k_warn(ar, "failed to wait for created wmi peer %pM on vdev %i: %i\n",
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			    addr, vdev_id, ret);
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		return ret;
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	}
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	ar->num_peers++;
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	return 0;
}

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static int ath10k_mac_set_kickout(struct ath10k_vif *arvif)
{
	struct ath10k *ar = arvif->ar;
	u32 param;
	int ret;

	param = ar->wmi.pdev_param->sta_kickout_th;
	ret = ath10k_wmi_pdev_set_param(ar, param,
					ATH10K_KICKOUT_THRESHOLD);
	if (ret) {
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		ath10k_warn(ar, "failed to set kickout threshold on vdev %i: %d\n",
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			    arvif->vdev_id, ret);
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		return ret;
	}

	param = ar->wmi.vdev_param->ap_keepalive_min_idle_inactive_time_secs;
	ret = ath10k_wmi_vdev_set_param(ar, arvif->vdev_id, param,
					ATH10K_KEEPALIVE_MIN_IDLE);
	if (ret) {
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		ath10k_warn(ar, "failed to set keepalive minimum idle time on vdev %i: %d\n",
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			    arvif->vdev_id, ret);
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		return ret;
	}

	param = ar->wmi.vdev_param->ap_keepalive_max_idle_inactive_time_secs;
	ret = ath10k_wmi_vdev_set_param(ar, arvif->vdev_id, param,
					ATH10K_KEEPALIVE_MAX_IDLE);
	if (ret) {
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		ath10k_warn(ar, "failed to set keepalive maximum idle time on vdev %i: %d\n",
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			    arvif->vdev_id, ret);
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		return ret;
	}

	param = ar->wmi.vdev_param->ap_keepalive_max_unresponsive_time_secs;
	ret = ath10k_wmi_vdev_set_param(ar, arvif->vdev_id, param,
					ATH10K_KEEPALIVE_MAX_UNRESPONSIVE);
	if (ret) {
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		ath10k_warn(ar, "failed to set keepalive maximum unresponsive time on vdev %i: %d\n",
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			    arvif->vdev_id, ret);
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		return ret;
	}

	return 0;
}

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static int ath10k_mac_set_rts(struct ath10k_vif *arvif, u32 value)
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{
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	struct ath10k *ar = arvif->ar;
	u32 vdev_param;

	vdev_param = ar->wmi.vdev_param->rts_threshold;
	return ath10k_wmi_vdev_set_param(ar, arvif->vdev_id, vdev_param, value);
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}

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static int ath10k_peer_delete(struct ath10k *ar, u32 vdev_id, const u8 *addr)
{
	int ret;

	lockdep_assert_held(&ar->conf_mutex);

	ret = ath10k_wmi_peer_delete(ar, vdev_id, addr);
	if (ret)
		return ret;

	ret = ath10k_wait_for_peer_deleted(ar, vdev_id, addr);
	if (ret)
		return ret;

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	ar->num_peers--;

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	return 0;
}

static void ath10k_peer_cleanup(struct ath10k *ar, u32 vdev_id)
{
	struct ath10k_peer *peer, *tmp;

	lockdep_assert_held(&ar->conf_mutex);

	spin_lock_bh(&ar->data_lock);
	list_for_each_entry_safe(peer, tmp, &ar->peers, list) {
		if (peer->vdev_id != vdev_id)
			continue;

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		ath10k_warn(ar, "removing stale peer %pM from vdev_id %d\n",
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			    peer->addr, vdev_id);

		list_del(&peer->list);
		kfree(peer);
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		ar->num_peers--;
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	}
	spin_unlock_bh(&ar->data_lock);
}

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static void ath10k_peer_cleanup_all(struct ath10k *ar)
{
	struct ath10k_peer *peer, *tmp;

	lockdep_assert_held(&ar->conf_mutex);

	spin_lock_bh(&ar->data_lock);
	list_for_each_entry_safe(peer, tmp, &ar->peers, list) {
		list_del(&peer->list);
		kfree(peer);
	}
	spin_unlock_bh(&ar->data_lock);
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	ar->num_peers = 0;
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	ar->num_stations = 0;
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}

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static int ath10k_mac_tdls_peer_update(struct ath10k *ar, u32 vdev_id,
				       struct ieee80211_sta *sta,
				       enum wmi_tdls_peer_state state)
{
	int ret;
	struct wmi_tdls_peer_update_cmd_arg arg = {};
	struct wmi_tdls_peer_capab_arg cap = {};
	struct wmi_channel_arg chan_arg = {};

	lockdep_assert_held(&ar->conf_mutex);

	arg.vdev_id = vdev_id;
	arg.peer_state = state;
	ether_addr_copy(arg.addr, sta->addr);

	cap.peer_max_sp = sta->max_sp;
	cap.peer_uapsd_queues = sta->uapsd_queues;

	if (state == WMI_TDLS_PEER_STATE_CONNECTED &&
	    !sta->tdls_initiator)
		cap.is_peer_responder = 1;

	ret = ath10k_wmi_tdls_peer_update(ar, &arg, &cap, &chan_arg);
	if (ret) {
		ath10k_warn(ar, "failed to update tdls peer %pM on vdev %i: %i\n",
			    arg.addr, vdev_id, ret);
		return ret;
	}

	return 0;
}

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/************************/
/* Interface management */
/************************/

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void ath10k_mac_vif_beacon_free(struct ath10k_vif *arvif)
{
	struct ath10k *ar = arvif->ar;

	lockdep_assert_held(&ar->data_lock);

	if (!arvif->beacon)
		return;

	if (!arvif->beacon_buf)
		dma_unmap_single(ar->dev, ATH10K_SKB_CB(arvif->beacon)->paddr,
				 arvif->beacon->len, DMA_TO_DEVICE);

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	if (WARN_ON(arvif->beacon_state != ATH10K_BEACON_SCHEDULED &&
		    arvif->beacon_state != ATH10K_BEACON_SENT))
		return;

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	dev_kfree_skb_any(arvif->beacon);

	arvif->beacon = NULL;
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	arvif->beacon_state = ATH10K_BEACON_SCHEDULED;
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}

static void ath10k_mac_vif_beacon_cleanup(struct ath10k_vif *arvif)
{
	struct ath10k *ar = arvif->ar;

	lockdep_assert_held(&ar->data_lock);

	ath10k_mac_vif_beacon_free(arvif);

	if (arvif->beacon_buf) {
		dma_free_coherent(ar->dev, IEEE80211_MAX_FRAME_LEN,
				  arvif->beacon_buf, arvif->beacon_paddr);
		arvif->beacon_buf = NULL;
	}
}

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static inline int ath10k_vdev_setup_sync(struct ath10k *ar)
{
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	unsigned long time_left;
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	lockdep_assert_held(&ar->conf_mutex);

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	if (test_bit(ATH10K_FLAG_CRASH_FLUSH, &ar->dev_flags))
		return -ESHUTDOWN;

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	time_left = wait_for_completion_timeout(&ar->vdev_setup_done,
						ATH10K_VDEV_SETUP_TIMEOUT_HZ);
	if (time_left == 0)
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		return -ETIMEDOUT;

	return 0;
}

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static int ath10k_monitor_vdev_start(struct ath10k *ar, int vdev_id)
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{
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	struct cfg80211_chan_def *chandef = NULL;
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	struct ieee80211_channel *channel = NULL;
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	struct wmi_vdev_start_request_arg arg = {};
	int ret = 0;

	lockdep_assert_held(&ar->conf_mutex);

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	ieee80211_iter_chan_contexts_atomic(ar->hw,
					    ath10k_mac_get_any_chandef_iter,
					    &chandef);
	if (WARN_ON_ONCE(!chandef))
		return -ENOENT;

	channel = chandef->chan;

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	arg.vdev_id = vdev_id;
	arg.channel.freq = channel->center_freq;
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	arg.channel.band_center_freq1 = chandef->center_freq1;
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	/* TODO setup this dynamically, what in case we
	   don't have any vifs? */
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	arg.channel.mode = chan_to_phymode(chandef);
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	arg.channel.chan_radar =
			!!(channel->flags & IEEE80211_CHAN_RADAR);
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	arg.channel.min_power = 0;
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	arg.channel.max_power = channel->max_power * 2;
	arg.channel.max_reg_power = channel->max_reg_power * 2;
	arg.channel.max_antenna_gain = channel->max_antenna_gain * 2;
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	reinit_completion(&ar->vdev_setup_done);

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	ret = ath10k_wmi_vdev_start(ar, &arg);
	if (ret) {
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		ath10k_warn(ar, "failed to request monitor vdev %i start: %d\n",
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			    vdev_id, ret);
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		return ret;
	}

	ret = ath10k_vdev_setup_sync(ar);
	if (ret) {
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		ath10k_warn(ar, "failed to synchronize setup for monitor vdev %i start: %d\n",
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			    vdev_id, ret);
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		return ret;
	}

	ret = ath10k_wmi_vdev_up(ar, vdev_id, 0, ar->mac_addr);
	if (ret) {
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		ath10k_warn(ar, "failed to put up monitor vdev %i: %d\n",
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			    vdev_id, ret);
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		goto vdev_stop;
	}

	ar->monitor_vdev_id = vdev_id;

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	ath10k_dbg(ar, ATH10K_DBG_MAC, "mac monitor vdev %i started\n",
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		   ar->monitor_vdev_id);
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	return 0;

vdev_stop:
	ret = ath10k_wmi_vdev_stop(ar, ar->monitor_vdev_id);
	if (ret)
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		ath10k_warn(ar, "failed to stop monitor vdev %i after start failure: %d\n",
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			    ar->monitor_vdev_id, ret);
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	return ret;
}

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static int ath10k_monitor_vdev_stop(struct ath10k *ar)
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{
	int ret = 0;

	lockdep_assert_held(&ar->conf_mutex);

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	ret = ath10k_wmi_vdev_down(ar, ar->monitor_vdev_id);
	if (ret)
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		ath10k_warn(ar, "failed to put down monitor vdev %i: %d\n",
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			    ar->monitor_vdev_id, ret);
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	reinit_completion(&ar->vdev_setup_done);

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	ret = ath10k_wmi_vdev_stop(ar, ar->monitor_vdev_id);
	if (ret)
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		ath10k_warn(ar, "failed to to request monitor vdev %i stop: %d\n",
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			    ar->monitor_vdev_id, ret);
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	ret = ath10k_vdev_setup_sync(ar);
	if (ret)
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		ath10k_warn(ar, "failed to synchronize monitor vdev %i stop: %d\n",
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			    ar->monitor_vdev_id, ret);
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	ath10k_dbg(ar, ATH10K_DBG_MAC, "mac monitor vdev %i stopped\n",
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		   ar->monitor_vdev_id);
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	return ret;
}

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static int ath10k_monitor_vdev_create(struct ath10k *ar)
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{
	int bit, ret = 0;

	lockdep_assert_held(&ar->conf_mutex);

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	if (ar->free_vdev_map == 0) {
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		ath10k_warn(ar, "failed to find free vdev id for monitor vdev\n");
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		return -ENOMEM;
	}

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	bit = __ffs64(ar->free_vdev_map);
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	ar->monitor_vdev_id = bit;
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	ret = ath10k_wmi_vdev_create(ar, ar->monitor_vdev_id,
				     WMI_VDEV_TYPE_MONITOR,
				     0, ar->mac_addr);
	if (ret) {
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		ath10k_warn(ar, "failed to request monitor vdev %i creation: %d\n",
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			    ar->monitor_vdev_id, ret);
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		return ret;
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	}

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	ar->free_vdev_map &= ~(1LL << ar->monitor_vdev_id);
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	ath10k_dbg(ar, ATH10K_DBG_MAC, "mac monitor vdev %d created\n",
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		   ar->monitor_vdev_id);

	return 0;
}

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static int ath10k_monitor_vdev_delete(struct ath10k *ar)
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{
	int ret = 0;

	lockdep_assert_held(&ar->conf_mutex);

	ret = ath10k_wmi_vdev_delete(ar, ar->monitor_vdev_id);
	if (ret) {
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		ath10k_warn(ar, "failed to request wmi monitor vdev %i removal: %d\n",
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			    ar->monitor_vdev_id, ret);
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		return ret;
	}

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	ar->free_vdev_map |= 1LL << ar->monitor_vdev_id;
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	ath10k_dbg(ar, ATH10K_DBG_MAC, "mac monitor vdev %d deleted\n",
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		   ar->monitor_vdev_id);
	return ret;
}

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static int ath10k_monitor_start(struct ath10k *ar)
{
	int ret;

	lockdep_assert_held(&ar->conf_mutex);

	ret = ath10k_monitor_vdev_create(ar);
	if (ret) {
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		ath10k_warn(ar, "failed to create monitor vdev: %d\n", ret);
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		return ret;
	}

	ret = ath10k_monitor_vdev_start(ar, ar->monitor_vdev_id);
	if (ret) {
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		ath10k_warn(ar, "failed to start monitor vdev: %d\n", ret);
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		ath10k_monitor_vdev_delete(ar);
		return ret;
	}

	ar->monitor_started = true;
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	ath10k_dbg(ar, ATH10K_DBG_MAC, "mac monitor started\n");
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	return 0;
}

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static int ath10k_monitor_stop(struct ath10k *ar)
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{
	int ret;

	lockdep_assert_held(&ar->conf_mutex);

	ret = ath10k_monitor_vdev_stop(ar);
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	if (ret) {
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		ath10k_warn(ar, "failed to stop monitor vdev: %d\n", ret);
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		return ret;
	}
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	ret = ath10k_monitor_vdev_delete(ar);
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	if (ret) {
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		ath10k_warn(ar, "failed to delete monitor vdev: %d\n", ret);
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		return ret;
	}
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	ar->monitor_started = false;
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	ath10k_dbg(ar, ATH10K_DBG_MAC, "mac monitor stopped\n");
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	return 0;
}

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static bool ath10k_mac_monitor_vdev_is_needed(struct ath10k *ar)
{
	int num_ctx;

	/* At least one chanctx is required to derive a channel to start
	 * monitor vdev on.
	 */
	num_ctx = ath10k_mac_num_chanctxs(ar);
	if (num_ctx == 0)
		return false;

	/* If there's already an existing special monitor interface then don't
	 * bother creating another monitor vdev.
	 */
	if (ar->monitor_arvif)
		return false;

	return ar->monitor ||
	       test_bit(ATH10K_CAC_RUNNING, &ar->dev_flags);
}

static bool ath10k_mac_monitor_vdev_is_allowed(struct ath10k *ar)
{
	int num_ctx;

	num_ctx = ath10k_mac_num_chanctxs(ar);

	/* FIXME: Current interface combinations and cfg80211/mac80211 code
	 * shouldn't allow this but make sure to prevent handling the following
	 * case anyway since multi-channel DFS hasn't been tested at all.
	 */
	if (test_bit(ATH10K_CAC_RUNNING, &ar->dev_flags) && num_ctx > 1)
		return false;

	return true;
}

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static int ath10k_monitor_recalc(struct ath10k *ar)
{
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	bool needed;
	bool allowed;
	int ret;
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	lockdep_assert_held(&ar->conf_mutex);

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	needed = ath10k_mac_monitor_vdev_is_needed(ar);
	allowed = ath10k_mac_monitor_vdev_is_allowed(ar);
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	ath10k_dbg(ar, ATH10K_DBG_MAC,
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		   "mac monitor recalc started? %d needed? %d allowed? %d\n",
		   ar->monitor_started, needed, allowed);
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	if (WARN_ON(needed && !allowed)) {
		if (ar->monitor_started) {
			ath10k_dbg(ar, ATH10K_DBG_MAC, "mac monitor stopping disallowed monitor\n");

			ret = ath10k_monitor_stop(ar);
			if (ret)
				ath10k_warn(ar, "failed to stop disallowed monitor: %d\n", ret);
				/* not serious */
		}
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		return -EPERM;
	}
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	if (needed == ar->monitor_started)
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		return 0;

1123
	if (needed)
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		return ath10k_monitor_start(ar);
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	else
		return ath10k_monitor_stop(ar);
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}

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static int ath10k_recalc_rtscts_prot(struct ath10k_vif *arvif)
{
	struct ath10k *ar = arvif->ar;
	u32 vdev_param, rts_cts = 0;

	lockdep_assert_held(&ar->conf_mutex);

	vdev_param = ar->wmi.vdev_param->enable_rtscts;

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	rts_cts |= SM(WMI_RTSCTS_ENABLED, WMI_RTSCTS_SET);
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	if (arvif->num_legacy_stations > 0)
		rts_cts |= SM(WMI_RTSCTS_ACROSS_SW_RETRIES,
			      WMI_RTSCTS_PROFILE);
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	else
		rts_cts |= SM(WMI_RTSCTS_FOR_SECOND_RATESERIES,
			      WMI_RTSCTS_PROFILE);
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	return ath10k_wmi_vdev_set_param(ar, arvif->vdev_id, vdev_param,
					 rts_cts);
}

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static int ath10k_start_cac(struct ath10k *ar)
{
	int ret;

	lockdep_assert_held(&ar->conf_mutex);

	set_bit(ATH10K_CAC_RUNNING, &ar->dev_flags);

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	ret = ath10k_monitor_recalc(ar);
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	if (ret) {
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		ath10k_warn(ar, "failed to start monitor (cac): %d\n", ret);
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		clear_bit(ATH10K_CAC_RUNNING, &ar->dev_flags);
		return ret;
	}

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	ath10k_dbg(ar, ATH10K_DBG_MAC, "mac cac start monitor vdev %d\n",
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		   ar->monitor_vdev_id);

	return 0;
}

static int ath10k_stop_cac(struct ath10k *ar)
{
	lockdep_assert_held(&ar->conf_mutex);

	/* CAC is not running - do nothing */
	if (!test_bit(ATH10K_CAC_RUNNING, &ar->dev_flags))
		return 0;

	clear_bit(ATH10K_CAC_RUNNING, &ar->dev_flags);
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	ath10k_monitor_stop(ar);
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	ath10k_dbg(ar, ATH10K_DBG_MAC, "mac cac finished\n");
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	return 0;
}

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static void ath10k_mac_has_radar_iter(struct ieee80211_hw *hw,
				      struct ieee80211_chanctx_conf *conf,
				      void *data)
{
	bool *ret = data;

	if (!*ret && conf->radar_enabled)
		*ret = true;
}

static bool ath10k_mac_has_radar_enabled(struct ath10k *ar)
{
	bool has_radar = false;

	ieee80211_iter_chan_contexts_atomic(ar->hw,
					    ath10k_mac_has_radar_iter,
					    &has_radar);

	return has_radar;
}

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static void ath10k_recalc_radar_detection(struct ath10k *ar)
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{
	int ret;

	lockdep_assert_held(&ar->conf_mutex);

	ath10k_stop_cac(ar);

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	if (!ath10k_mac_has_radar_enabled(ar))
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		return;

1220
	if (ar->num_started_vdevs > 0)
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		return;

	ret = ath10k_start_cac(ar);
	if (ret) {
		/*
		 * Not possible to start CAC on current channel so starting
		 * radiation is not allowed, make this channel DFS_UNAVAILABLE
		 * by indicating that radar was detected.
		 */
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		ath10k_warn(ar, "failed to start CAC: %d\n", ret);
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		ieee80211_radar_detected(ar->hw);
	}
}

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static int ath10k_vdev_stop(struct ath10k_vif *arvif)
{
	struct ath10k *ar = arvif->ar;
	int ret;

	lockdep_assert_held(&ar->conf_mutex);

	reinit_completion(&ar->vdev_setup_done);

	ret = ath10k_wmi_vdev_stop(ar, arvif->vdev_id);
	if (ret) {
		ath10k_warn(ar, "failed to stop WMI vdev %i: %d\n",
			    arvif->vdev_id, ret);
		return ret;
	}

	ret = ath10k_vdev_setup_sync(ar);
	if (ret) {
		ath10k_warn(ar, "failed to syncronise setup for vdev %i: %d\n",
			    arvif->vdev_id, ret);
		return ret;
	}

	WARN_ON(ar->num_started_vdevs == 0);

	if (ar->num_started_vdevs != 0) {
		ar->num_started_vdevs--;
		ath10k_recalc_radar_detection(ar);
	}

	return ret;
}

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static int ath10k_vdev_start_restart(struct ath10k_vif *arvif,
				     const struct cfg80211_chan_def *chandef,
				     bool restart)
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{
	struct ath10k *ar = arvif->ar;
	struct wmi_vdev_start_request_arg arg = {};
	int ret = 0;

	lockdep_assert_held(&ar->conf_mutex);

	reinit_completion(&ar->vdev_setup_done);

	arg.vdev_id = arvif->vdev_id;
	arg.dtim_period = arvif->dtim_period;
	arg.bcn_intval = arvif->beacon_interval;

	arg.channel.freq = chandef->chan->center_freq;
	arg.channel.band_center_freq1 = chandef->center_freq1;
	arg.channel.mode = chan_to_phymode(chandef);

	arg.channel.min_power = 0;
	arg.channel.max_power = chandef->chan->max_power * 2;
	arg.channel.max_reg_power = chandef->chan->max_reg_power * 2;
	arg.channel.max_antenna_gain = chandef->chan->max_antenna_gain * 2;

	if (arvif->vdev_type == WMI_VDEV_TYPE_AP) {
		arg.ssid = arvif->u.ap.ssid;
		arg.ssid_len = arvif->u.ap.ssid_len;
		arg.hidden_ssid = arvif->u.ap.hidden_ssid;

		/* For now allow DFS for AP mode */
		arg.channel.chan_radar =
			!!(chandef->chan->flags & IEEE80211_CHAN_RADAR);
	} else if (arvif->vdev_type == WMI_VDEV_TYPE_IBSS) {
		arg.ssid = arvif->vif->bss_conf.ssid;
		arg.ssid_len = arvif->vif->bss_conf.ssid_len;
	}

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	ath10k_dbg(ar, ATH10K_DBG_MAC,
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		   "mac vdev %d start center_freq %d phymode %s\n",
		   arg.vdev_id, arg.channel.freq,
		   ath10k_wmi_phymode_str(arg.channel.mode));

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	if (restart)
		ret = ath10k_wmi_vdev_restart(ar, &arg);
	else
		ret = ath10k_wmi_vdev_start(ar, &arg);

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	if (ret) {
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		ath10k_warn(ar, "failed to start WMI vdev %i: %d\n",
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			    arg.vdev_id, ret);
		return ret;
	}

	ret = ath10k_vdev_setup_sync(ar);
	if (ret) {
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		ath10k_warn(ar,
			    "failed to synchronize setup for vdev %i restart %d: %d\n",
			    arg.vdev_id, restart, ret);
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		return ret;
	}

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	ar->num_started_vdevs++;
	ath10k_recalc_radar_detection(ar);

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	return ret;
}

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static int ath10k_vdev_start(struct ath10k_vif *arvif,
			     const struct cfg80211_chan_def *def)
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{
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	return ath10k_vdev_start_restart(arvif, def, false);
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}

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static int ath10k_vdev_restart(struct ath10k_vif *arvif,
			       const struct cfg80211_chan_def *def)
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{
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	return ath10k_vdev_start_restart(arvif, def, true);
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}

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static int ath10k_mac_setup_bcn_p2p_ie(struct ath10k_vif *arvif,
				       struct sk_buff *bcn)
{
	struct ath10k *ar = arvif->ar;
	struct ieee80211_mgmt *mgmt;
	const u8 *p2p_ie;
	int ret;

	if (arvif->vdev_type != WMI_VDEV_TYPE_AP)
		return 0;

	if (arvif->vdev_subtype != WMI_VDEV_SUBTYPE_P2P_GO)
		return 0;

	mgmt = (void *)bcn->data;
	p2p_ie = cfg80211_find_vendor_ie(WLAN_OUI_WFA, WLAN_OUI_TYPE_WFA_P2P,
					 mgmt->u.beacon.variable,
					 bcn->len - (mgmt->u.beacon.variable -
						     bcn->data));
	if (!p2p_ie)
		return -ENOENT;

	ret = ath10k_wmi_p2p_go_bcn_ie(ar, arvif->vdev_id, p2p_ie);
	if (ret) {
		ath10k_warn(ar, "failed to submit p2p go bcn ie for vdev %i: %d\n",
			    arvif->vdev_id, ret);
		return ret;
	}

	return 0;
}

static int ath10k_mac_remove_vendor_ie(struct sk_buff *skb, unsigned int oui,
				       u8 oui_type, size_t ie_offset)
{
	size_t len;
	const u8 *next;
	const u8 *end;
	u8 *ie;

	if (WARN_ON(skb->len < ie_offset))
		return -EINVAL;

	ie = (u8 *)cfg80211_find_vendor_ie(oui, oui_type,
					   skb->data + ie_offset,
					   skb->len - ie_offset);
	if (!ie)
		return -ENOENT;

	len = ie[1] + 2;
	end = skb->data + skb->len;
	next = ie + len;

	if (WARN_ON(next > end))
		return -EINVAL;

	memmove(ie, next, end - next);
	skb_trim(skb, skb->len - len);

	return 0;
}

static int ath10k_mac_setup_bcn_tmpl(struct ath10k_vif *arvif)
{
	struct ath10k *ar = arvif->ar;
	struct ieee80211_hw *hw = ar->hw;
	struct ieee80211_vif *vif = arvif->vif;
	struct ieee80211_mutable_offsets offs = {};
	struct sk_buff *bcn;
	int ret;

	if (!test_bit(WMI_SERVICE_BEACON_OFFLOAD, ar->wmi.svc_map))
		return 0;

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	if (arvif->vdev_type != WMI_VDEV_TYPE_AP &&
	    arvif->vdev_type != WMI_VDEV_TYPE_IBSS)
		return 0;

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	bcn = ieee80211_beacon_get_template(hw, vif, &offs);
	if (!bcn) {
		ath10k_warn(ar, "failed to get beacon template from mac80211\n");
		return -EPERM;
	}

	ret = ath10k_mac_setup_bcn_p2p_ie(arvif, bcn);
	if (ret) {
		ath10k_warn(ar, "failed to setup p2p go bcn ie: %d\n", ret);
		kfree_skb(bcn);
		return ret;
	}

	/* P2P IE is inserted by firmware automatically (as configured above)
	 * so remove it from the base beacon template to avoid duplicate P2P
	 * IEs in beacon frames.
	 */
	ath10k_mac_remove_vendor_ie(bcn, WLAN_OUI_WFA, WLAN_OUI_TYPE_WFA_P2P,
				    offsetof(struct ieee80211_mgmt,
					     u.beacon.variable));

	ret = ath10k_wmi_bcn_tmpl(ar, arvif->vdev_id, offs.tim_offset, bcn, 0,
				  0, NULL, 0);
	kfree_skb(bcn);

	if (ret) {
		ath10k_warn(ar, "failed to submit beacon template command: %d\n",
			    ret);
		return ret;
	}

	return 0;
}

static int ath10k_mac_setup_prb_tmpl(struct ath10k_vif *arvif)
{
	struct ath10k *ar = arvif->ar;
	struct ieee80211_hw *hw = ar->hw;
	struct ieee80211_vif *vif = arvif->vif;
	struct sk_buff *prb;
	int ret;

	if (!test_bit(WMI_SERVICE_BEACON_OFFLOAD, ar->wmi.svc_map))
		return 0;

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	if (arvif->vdev_type != WMI_VDEV_TYPE_AP)
		return 0;

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	prb = ieee80211_proberesp_get(hw, vif);
	if (!prb) {
		ath10k_warn(ar, "failed to get probe resp template from mac80211\n");
		return -EPERM;
	}

	ret = ath10k_wmi_prb_tmpl(ar, arvif->vdev_id, prb);
	kfree_skb(prb);

	if (ret) {
		ath10k_warn(ar, "failed to submit probe resp template command: %d\n",
			    ret);
		return ret;
	}

	return 0;
}

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static int ath10k_mac_vif_fix_hidden_ssid(struct ath10k_vif *arvif)
{
	struct ath10k *ar = arvif->ar;
	struct cfg80211_chan_def def;
	int ret;

	/* When originally vdev is started during assign_vif_chanctx() some
	 * information is missing, notably SSID. Firmware revisions with beacon
	 * offloading require the SSID to be provided during vdev (re)start to
	 * handle hidden SSID properly.
	 *
	 * Vdev restart must be done after vdev has been both started and
	 * upped. Otherwise some firmware revisions (at least 10.2) fail to
	 * deliver vdev restart response event causing timeouts during vdev
	 * syncing in ath10k.
	 *
	 * Note: The vdev down/up and template reinstallation could be skipped
	 * since only wmi-tlv firmware are known to have beacon offload and
	 * wmi-tlv doesn't seem to misbehave like 10.2 wrt vdev restart
	 * response delivery. It's probably more robust to keep it as is.
	 */
	if (!test_bit(WMI_SERVICE_BEACON_OFFLOAD, ar->wmi.svc_map))
		return 0;

	if (WARN_ON(!arvif->is_started))
		return -EINVAL;

	if (WARN_ON(!arvif->is_up))
		return -EINVAL;

	if (WARN_ON(ath10k_mac_vif_chan(arvif->vif, &def)))
		return -EINVAL;

	ret = ath10k_wmi_vdev_down(ar, arvif->vdev_id);
	if (ret) {
		ath10k_warn(ar, "failed to bring down ap vdev %i: %d\n",
			    arvif->vdev_id, ret);
		return ret;
	}

	/* Vdev down reset beacon & presp templates. Reinstall them. Otherwise
	 * firmware will crash upon vdev up.
	 */

	ret = ath10k_mac_setup_bcn_tmpl(arvif);
	if (ret) {
		ath10k_warn(ar, "failed to update beacon template: %d\n", ret);
		return ret;
	}

	ret = ath10k_mac_setup_prb_tmpl(arvif);
	if (ret) {
		ath10k_warn(ar, "failed to update presp template: %d\n", ret);
		return ret;
	}

	ret = ath10k_vdev_restart(arvif, &def);
	if (ret) {
		ath10k_warn(ar, "failed to restart ap vdev %i: %d\n",
			    arvif->vdev_id, ret);
		return ret;
	}

	ret = ath10k_wmi_vdev_up(arvif->ar, arvif->vdev_id, arvif->aid,
				 arvif->bssid);
	if (ret) {
		ath10k_warn(ar, "failed to bring up ap vdev %i: %d\n",
			    arvif->vdev_id, ret);
		return ret;
	}

	return 0;
}

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static void ath10k_control_beaconing(struct ath10k_vif *arvif,
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				     struct ieee80211_bss_conf *info)
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{
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	struct ath10k *ar = arvif->ar;
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	int ret = 0;

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	lockdep_assert_held(&arvif->ar->conf_mutex);

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	if (!info->enable_beacon) {
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		ret = ath10k_wmi_vdev_down(ar, arvif->vdev_id);
		if (ret)
			ath10k_warn(ar, "failed to down vdev_id %i: %d\n",
				    arvif->vdev_id, ret);
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		arvif->is_up = false;

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		spin_lock_bh(&arvif->ar->data_lock);
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		ath10k_mac_vif_beacon_free(arvif);
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		spin_unlock_bh(&arvif->ar->data_lock);

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		return;
	}

	arvif->tx_seq_no = 0x1000;

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	arvif->aid = 0;
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	ether_addr_copy(arvif->bssid, info->bssid);
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	ret = ath10k_wmi_vdev_up(arvif->ar, arvif->vdev_id, arvif->aid,
				 arvif->bssid);
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	if (ret) {
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		ath10k_warn(ar, "failed to bring up vdev %d: %i\n",
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			    arvif->vdev_id, ret);
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		return;
	}
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	arvif->is_up = true;

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	ret = ath10k_mac_vif_fix_hidden_ssid(arvif);
	if (ret) {
		ath10k_warn(ar, "failed to fix hidden ssid for vdev %i, expect trouble: %d\n",
			    arvif->vdev_id, ret);
		return;
	}

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	ath10k_dbg(ar, ATH10K_DBG_MAC, "mac vdev %d up\n", arvif->vdev_id);
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}

static void ath10k_control_ibss(struct ath10k_vif *arvif,
				struct ieee80211_bss_conf *info,
				const u8 self_peer[ETH_ALEN])
{
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	struct ath10k *ar = arvif->ar;
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	u32 vdev_param;
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	int ret = 0;

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	lockdep_assert_held(&arvif->ar->conf_mutex);

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	if (!info->ibss_joined) {
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		if (is_zero_ether_addr(arvif->bssid))
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			return;

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		eth_zero_addr(arvif->bssid);
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		return;
	}

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	vdev_param = arvif->ar->wmi.vdev_param->atim_window;
	ret = ath10k_wmi_vdev_set_param(arvif->ar, arvif->vdev_id, vdev_param,
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					ATH10K_DEFAULT_ATIM);
	if (ret)
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		ath10k_warn(ar, "failed to set IBSS ATIM for vdev %d: %d\n",
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			    arvif->vdev_id, ret);
}

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static int ath10k_mac_vif_recalc_ps_wake_threshold(struct ath10k_vif *arvif)
{
	struct ath10k *ar = arvif->ar;
	u32 param;
	u32 value;
	int ret;

	lockdep_assert_held(&arvif->ar->conf_mutex);

	if (arvif->u.sta.uapsd)
		value = WMI_STA_PS_TX_WAKE_THRESHOLD_NEVER;
	else
		value = WMI_STA_PS_TX_WAKE_THRESHOLD_ALWAYS;

	param = WMI_STA_PS_PARAM_TX_WAKE_THRESHOLD;
	ret = ath10k_wmi_set_sta_ps_param(ar, arvif->vdev_id, param, value);
	if (ret) {
		ath10k_warn(ar, "failed to submit ps wake threshold %u on vdev %i: %d\n",
			    value, arvif->vdev_id, ret);
		return ret;
	}

	return 0;
}

static int ath10k_mac_vif_recalc_ps_poll_count(struct ath10k_vif *arvif)
{
	struct ath10k *ar = arvif->ar;
	u32 param;
	u32 value;
	int ret;

	lockdep_assert_held(&arvif->ar->conf_mutex);

	if (arvif->u.sta.uapsd)
		value = WMI_STA_PS_PSPOLL_COUNT_UAPSD;
	else
		value = WMI_STA_PS_PSPOLL_COUNT_NO_MAX;

	param = WMI_STA_PS_PARAM_PSPOLL_COUNT;
	ret = ath10k_wmi_set_sta_ps_param(ar, arvif->vdev_id,
					  param, value);
	if (ret) {
		ath10k_warn(ar, "failed to submit ps poll count %u on vdev %i: %d\n",
			    value, arvif->vdev_id, ret);
		return ret;
	}

	return 0;
}

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static int ath10k_mac_num_vifs_started(struct ath10k *ar)
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{
	struct ath10k_vif *arvif;
	int num = 0;

	lockdep_assert_held(&ar->conf_mutex);

	list_for_each_entry(arvif, &ar->arvifs, list)
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		if (arvif->is_started)
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			num++;

	return num;
}

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static int ath10k_mac_vif_setup_ps(struct ath10k_vif *arvif)
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{
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	struct ath10k *ar = arvif->ar;
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	struct ieee80211_vif *vif = arvif->vif;
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	struct ieee80211_conf *conf = &ar->hw->conf;
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	enum wmi_sta_powersave_param param;
	enum wmi_sta_ps_mode psmode;
	int ret;
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	int ps_timeout;
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	bool enable_ps;
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	lockdep_assert_held(&arvif->ar->conf_mutex);

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	if (arvif->vif->type != NL80211_IFTYPE_STATION)
		return 0;
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	enable_ps = arvif->ps;

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	if (enable_ps && ath10k_mac_num_vifs_started(ar) > 1 &&
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	    !test_bit(ATH10K_FW_FEATURE_MULTI_VIF_PS_SUPPORT,
		      ar->fw_features)) {
		ath10k_warn(ar, "refusing to enable ps on vdev %i: not supported by fw\n",
			    arvif->vdev_id);
		enable_ps = false;
	}

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	if (!arvif->is_started) {
		/* mac80211 can update vif powersave state while disconnected.
		 * Firmware doesn't behave nicely and consumes more power than
		 * necessary if PS is disabled on a non-started vdev. Hence
		 * force-enable PS for non-running vdevs.
		 */
		psmode = WMI_STA_PS_MODE_ENABLED;
	} else if (enable_ps) {
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		psmode = WMI_STA_PS_MODE_ENABLED;
		param = WMI_STA_PS_PARAM_INACTIVITY_TIME;

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		ps_timeout = conf->dynamic_ps_timeout;
		if (ps_timeout == 0) {
			/* Firmware doesn't like 0 */
			ps_timeout = ieee80211_tu_to_usec(
				vif->bss_conf.beacon_int) / 1000;
		}

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		ret = ath10k_wmi_set_sta_ps_param(ar, arvif->vdev_id, param,
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						  ps_timeout);
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		if (ret) {
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			ath10k_warn(ar, "failed to set inactivity time for vdev %d: %i\n",
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				    arvif->vdev_id, ret);
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			return ret;
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		}
	} else {
		psmode = WMI_STA_PS_MODE_DISABLED;
	}

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	ath10k_dbg(ar, ATH10K_DBG_MAC, "mac vdev %d psmode %s\n",
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		   arvif->vdev_id, psmode ? "enable" : "disable");

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	ret = ath10k_wmi_set_psmode(ar, arvif->vdev_id, psmode);
	if (ret) {
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		ath10k_warn(ar, "failed to set PS Mode %d for vdev %d: %d\n",
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			    psmode, arvif->vdev_id, ret);
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		return ret;
	}

	return 0;
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}

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static int ath10k_mac_vif_disable_keepalive(struct ath10k_vif *arvif)
{
	struct ath10k *ar = arvif->ar;
	struct wmi_sta_keepalive_arg arg = {};
	int ret;

	lockdep_assert_held(&arvif->ar->conf_mutex);

	if (arvif->vdev_type != WMI_VDEV_TYPE_STA)
		return 0;

	if (!test_bit(WMI_SERVICE_STA_KEEP_ALIVE, ar->wmi.svc_map))
		return 0;

	/* Some firmware revisions have a bug and ignore the `enabled` field.
	 * Instead use the interval to disable the keepalive.
	 */
	arg.vdev_id = arvif->vdev_id;
	arg.enabled = 1;
	arg.method = WMI_STA_KEEPALIVE_METHOD_NULL_FRAME;
	arg.interval = WMI_STA_KEEPALIVE_INTERVAL_DISABLE;

	ret = ath10k_wmi_sta_keepalive(ar, &arg);
	if (ret) {
		ath10k_warn(ar, "failed to submit keepalive on vdev %i: %d\n",
			    arvif->vdev_id, ret);
		return ret;
	}

	return 0;
}

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static void ath10k_mac_vif_ap_csa_count_down(struct ath10k_vif *arvif)
{
	struct ath10k *ar = arvif->ar;
	struct ieee80211_vif *vif = arvif->vif;
	int ret;

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	lockdep_assert_held(&arvif->ar->conf_mutex);

	if (WARN_ON(!test_bit(WMI_SERVICE_BEACON_OFFLOAD, ar->wmi.svc_map)))
		return;

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	if (arvif->vdev_type != WMI_VDEV_TYPE_AP)
		return;

	if (!vif->csa_active)
		return;

	if (!arvif->is_up)
		return;

	if (!ieee80211_csa_is_complete(vif)) {
		ieee80211_csa_update_counter(vif);

		ret = ath10k_mac_setup_bcn_tmpl(arvif);
		if (ret)
			ath10k_warn(ar, "failed to update bcn tmpl during csa: %d\n",
				    ret);

		ret = ath10k_mac_setup_prb_tmpl(arvif);
		if (ret)
			ath10k_warn(ar, "failed to update prb tmpl during csa: %d\n",
				    ret);
	} else {
		ieee80211_csa_finish(vif);
	}
}

static void ath10k_mac_vif_ap_csa_work(struct work_struct *work)
{
	struct ath10k_vif *arvif = container_of(work, struct ath10k_vif,
						ap_csa_work);
	struct ath10k *ar = arvif->ar;

	mutex_lock(&ar->conf_mutex);
	ath10k_mac_vif_ap_csa_count_down(arvif);
	mutex_unlock(&ar->conf_mutex);
}

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static void ath10k_mac_handle_beacon_iter(void *data, u8 *mac,
					  struct ieee80211_vif *vif)
{
	struct sk_buff *skb = data;
	struct ieee80211_mgmt *mgmt = (void *)skb->data;
	struct ath10k_vif *arvif = ath10k_vif_to_arvif(vif);

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

	if (!ether_addr_equal(mgmt->bssid, vif->bss_conf.bssid))
		return;

	cancel_delayed_work(&arvif->connection_loss_work);
}

void ath10k_mac_handle_beacon(struct ath10k *ar, struct sk_buff *skb)
{
	ieee80211_iterate_active_interfaces_atomic(ar->hw,
						   IEEE80211_IFACE_ITER_NORMAL,
						   ath10k_mac_handle_beacon_iter,
						   skb);
}

static void ath10k_mac_handle_beacon_miss_iter(void *data, u8 *mac,
					       struct ieee80211_vif *vif)
{
	u32 *vdev_id = data;
	struct ath10k_vif *arvif = ath10k_vif_to_arvif(vif);
	struct ath10k *ar = arvif->ar;
	struct ieee80211_hw *hw = ar->hw;

	if (arvif->vdev_id != *vdev_id)
		return;

	if (!arvif->is_up)
		return;

	ieee80211_beacon_loss(vif);

	/* Firmware doesn't report beacon loss events repeatedly. If AP probe
	 * (done by mac80211) succeeds but beacons do not resume then it
	 * doesn't make sense to continue operation. Queue connection loss work
	 * which can be cancelled when beacon is received.
	 */
	ieee80211_queue_delayed_work(hw, &arvif->connection_loss_work,
				     ATH10K_CONNECTION_LOSS_HZ);
}

void ath10k_mac_handle_beacon_miss(struct ath10k *ar, u32 vdev_id)
{
	ieee80211_iterate_active_interfaces_atomic(ar->hw,
						   IEEE80211_IFACE_ITER_NORMAL,
						   ath10k_mac_handle_beacon_miss_iter,
						   &vdev_id);
}

static void ath10k_mac_vif_sta_connection_loss_work(struct work_struct *work)
{
	struct ath10k_vif *arvif = container_of(work, struct ath10k_vif,
						connection_loss_work.work);
	struct ieee80211_vif *vif = arvif->vif;

	if (!arvif->is_up)
		return;

	ieee80211_connection_loss(vif);
}

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/**********************/
/* Station management */
/**********************/

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static u32 ath10k_peer_assoc_h_listen_intval(struct ath10k *ar,
					     struct ieee80211_vif *vif)
{
	/* Some firmware revisions have unstable STA powersave when listen
	 * interval is set too high (e.g. 5). The symptoms are firmware doesn't
	 * generate NullFunc frames properly even if buffered frames have been
	 * indicated in Beacon TIM. Firmware would seldom wake up to pull
	 * buffered frames. Often pinging the device from AP would simply fail.
	 *
	 * As a workaround set it to 1.
	 */
	if (vif->type == NL80211_IFTYPE_STATION)
		return 1;

	return ar->hw->conf.listen_interval;
}

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static void ath10k_peer_assoc_h_basic(struct ath10k *ar,
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				      struct ieee80211_vif *vif,
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				      struct ieee80211_sta *sta,
				      struct wmi_peer_assoc_complete_arg *arg)
{
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	struct ath10k_vif *arvif = ath10k_vif_to_arvif(vif);
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	u32 aid;
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	lockdep_assert_held(&ar->conf_mutex);

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	if (vif->type == NL80211_IFTYPE_STATION)
		aid = vif->bss_conf.aid;
	else
		aid = sta->aid;

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	ether_addr_copy(arg->addr, sta->addr);
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	arg->vdev_id = arvif->vdev_id;
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	arg->peer_aid = aid;
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	arg->peer_flags |= WMI_PEER_AUTH;
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	arg->peer_listen_intval = ath10k_peer_assoc_h_listen_intval(ar, vif);
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	arg->peer_num_spatial_streams = 1;
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	arg->peer_caps = vif->bss_conf.assoc_capability;
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}

static void ath10k_peer_assoc_h_crypto(struct ath10k *ar,
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				       struct ieee80211_vif *vif,
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				       struct wmi_peer_assoc_complete_arg *arg)
{
	struct ieee80211_bss_conf *info = &vif->bss_conf;
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	struct cfg80211_chan_def def;
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	struct cfg80211_bss *bss;
	const u8 *rsnie = NULL;
	const u8 *wpaie = NULL;

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	lockdep_assert_held(&ar->conf_mutex);

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	if (WARN_ON(ath10k_mac_vif_chan(vif, &def)))
		return;

	bss = cfg80211_get_bss(ar->hw->wiphy, def.chan, info->bssid, NULL, 0,
			       IEEE80211_BSS_TYPE_ANY, IEEE80211_PRIVACY_ANY);
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	if (bss) {
		const struct cfg80211_bss_ies *ies;

		rcu_read_lock();
		rsnie = ieee80211_bss_get_ie(bss, WLAN_EID_RSN);

		ies = rcu_dereference(bss->ies);

		wpaie = cfg80211_find_vendor_ie(WLAN_OUI_MICROSOFT,
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						WLAN_OUI_TYPE_MICROSOFT_WPA,
						ies->data,
						ies->len);
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		rcu_read_unlock();
		cfg80211_put_bss(ar->hw->wiphy, bss);
	}

	/* FIXME: base on RSN IE/WPA IE is a correct idea? */
	if (rsnie || wpaie) {
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		ath10k_dbg(ar, ATH10K_DBG_WMI, "%s: rsn ie found\n", __func__);
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		arg->peer_flags |= WMI_PEER_NEED_PTK_4_WAY;
	}

	if (wpaie) {
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		ath10k_dbg(ar, ATH10K_DBG_WMI, "%s: wpa ie found\n", __func__);
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		arg->peer_flags |= WMI_PEER_NEED_GTK_2_WAY;
	}
}

static void ath10k_peer_assoc_h_rates(struct ath10k *ar,
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				      struct ieee80211_vif *vif,
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				      struct ieee80211_sta *sta,
				      struct wmi_peer_assoc_complete_arg *arg)
{
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	struct ath10k_vif *arvif = ath10k_vif_to_arvif(vif);
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	struct wmi_rate_set_arg *rateset = &arg->peer_legacy_rates;
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	struct cfg80211_chan_def def;
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	const struct ieee80211_supported_band *sband;
	const struct ieee80211_rate *rates;
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	enum ieee80211_band band;
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	u32 ratemask;
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	u8 rate;
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	int i;

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	lockdep_assert_held(&ar->conf_mutex);

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	if (WARN_ON(ath10k_mac_vif_chan(vif, &def)))
		return;

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	band = def.chan->band;
	sband = ar->hw->wiphy->bands[band];
	ratemask = sta->supp_rates[band];
	ratemask &= arvif->bitrate_mask.control[band].legacy;
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	rates = sband->bitrates;

	rateset->num_rates = 0;

	for (i = 0; i < 32; i++, ratemask >>= 1, rates++) {
		if (!(ratemask & 1))
			continue;

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		rate = ath10k_mac_bitrate_to_rate(rates->bitrate);
		rateset->rates[rateset->num_rates] = rate;
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		rateset->num_rates++;
	}
}

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static bool
ath10k_peer_assoc_h_ht_masked(const u8 ht_mcs_mask[IEEE80211_HT_MCS_MASK_LEN])
{
	int nss;

	for (nss = 0; nss < IEEE80211_HT_MCS_MASK_LEN; nss++)
		if (ht_mcs_mask[nss])
			return false;

	return true;
}

static bool
ath10k_peer_assoc_h_vht_masked(const u16 vht_mcs_mask[NL80211_VHT_NSS_MAX])
{
	int nss;

	for (nss = 0; nss < NL80211_VHT_NSS_MAX; nss++)
		if (vht_mcs_mask[nss])
			return false;

	return true;
}

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static void ath10k_peer_assoc_h_ht(struct ath10k *ar,
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				   struct ieee80211_vif *vif,
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				   struct ieee80211_sta *sta,
				   struct wmi_peer_assoc_complete_arg *arg)
{
	const struct ieee80211_sta_ht_cap *ht_cap = &sta->ht_cap;
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	struct ath10k_vif *arvif = ath10k_vif_to_arvif(vif);
	struct cfg80211_chan_def def;
	enum ieee80211_band band;
	const u8 *ht_mcs_mask;
	const u16 *vht_mcs_mask;
	int i, n, max_nss;
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	u32 stbc;
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	lockdep_assert_held(&ar->conf_mutex);

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	if (WARN_ON(ath10k_mac_vif_chan(vif, &def)))
		return;

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	if (!ht_cap->ht_supported)
		return;

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	band = def.chan->band;
	ht_mcs_mask = arvif->bitrate_mask.control[band].ht_mcs;
	vht_mcs_mask = arvif->bitrate_mask.control[band].vht_mcs;

	if (ath10k_peer_assoc_h_ht_masked(ht_mcs_mask) &&
	    ath10k_peer_assoc_h_vht_masked(vht_mcs_mask))
		return;

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	arg->peer_flags |= WMI_PEER_HT;
	arg->peer_max_mpdu = (1 << (IEEE80211_HT_MAX_AMPDU_FACTOR +
				    ht_cap->ampdu_factor)) - 1;

	arg->peer_mpdu_density =
		ath10k_parse_mpdudensity(ht_cap->ampdu_density);

	arg->peer_ht_caps = ht_cap->cap;
	arg->peer_rate_caps |= WMI_RC_HT_FLAG;

	if (ht_cap->cap & IEEE80211_HT_CAP_LDPC_CODING)
		arg->peer_flags |= WMI_PEER_LDPC;

	if (sta->bandwidth >= IEEE80211_STA_RX_BW_40) {
		arg->peer_flags |= WMI_PEER_40MHZ;
		arg->peer_rate_caps |= WMI_RC_CW40_FLAG;
	}

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	if (arvif->bitrate_mask.control[band].gi != NL80211_TXRATE_FORCE_LGI) {
		if (ht_cap->cap & IEEE80211_HT_CAP_SGI_20)
			arg->peer_rate_caps |= WMI_RC_SGI_FLAG;
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		if (ht_cap->cap & IEEE80211_HT_CAP_SGI_40)
			arg->peer_rate_caps |= WMI_RC_SGI_FLAG;
	}
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	if (ht_cap->cap & IEEE80211_HT_CAP_TX_STBC) {
		arg->peer_rate_caps |= WMI_RC_TX_STBC_FLAG;
		arg->peer_flags |= WMI_PEER_STBC;
	}

	if (ht_cap->cap & IEEE80211_HT_CAP_RX_STBC) {
		stbc = ht_cap->cap & IEEE80211_HT_CAP_RX_STBC;
		stbc = stbc >> IEEE80211_HT_CAP_RX_STBC_SHIFT;
		stbc = stbc << WMI_RC_RX_STBC_FLAG_S;
		arg->peer_rate_caps |= stbc;
		arg->peer_flags |= WMI_PEER_STBC;
	}

	if (ht_cap->mcs.rx_mask[1] && ht_cap->mcs.rx_mask[2])
		arg->peer_rate_caps |= WMI_RC_TS_FLAG;
	else if (ht_cap->mcs.rx_mask[1])
		arg->peer_rate_caps |= WMI_RC_DS_FLAG;

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	for (i = 0, n = 0, max_nss = 0; i < IEEE80211_HT_MCS_MASK_LEN * 8; i++)
		if ((ht_cap->mcs.rx_mask[i / 8] & BIT(i % 8)) &&
		    (ht_mcs_mask[i / 8] & BIT(i % 8))) {
			max_nss = (i / 8) + 1;
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			arg->peer_ht_rates.rates[n++] = i;
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		}
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	/*
	 * This is a workaround for HT-enabled STAs which break the spec
	 * and have no HT capabilities RX mask (no HT RX MCS map).
	 *
	 * As per spec, in section 20.3.5 Modulation and coding scheme (MCS),
	 * MCS 0 through 7 are mandatory in 20MHz with 800 ns GI at all STAs.
	 *
	 * Firmware asserts if such situation occurs.
	 */
	if (n == 0) {
		arg->peer_ht_rates.num_rates = 8;
		for (i = 0; i < arg->peer_ht_rates.num_rates; i++)
			arg->peer_ht_rates.rates[i] = i;
	} else {
		arg->peer_ht_rates.num_rates = n;
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		arg->peer_num_spatial_streams = max_nss;
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	}
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	ath10k_dbg(ar, ATH10K_DBG_MAC, "mac ht peer %pM mcs cnt %d nss %d\n",
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		   arg->addr,
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		   arg->peer_ht_rates.num_rates,
		   arg->peer_num_spatial_streams);
}

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static int ath10k_peer_assoc_qos_ap(struct ath10k *ar,
				    struct ath10k_vif *arvif,
				    struct ieee80211_sta *sta)
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{
	u32 uapsd = 0;
	u32 max_sp = 0;
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	int ret = 0;
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	lockdep_assert_held(&ar->conf_mutex);

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	if (sta->wme && sta->uapsd_queues) {
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		ath10k_dbg(ar, ATH10K_DBG_MAC, "mac uapsd_queues 0x%x max_sp %d\n",
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			   sta->uapsd_queues, sta->max_sp);

		if (sta->uapsd_queues & IEEE80211_WMM_IE_STA_QOSINFO_AC_VO)
			uapsd |= WMI_AP_PS_UAPSD_AC3_DELIVERY_EN |
				 WMI_AP_PS_UAPSD_AC3_TRIGGER_EN;
		if (sta->uapsd_queues & IEEE80211_WMM_IE_STA_QOSINFO_AC_VI)
			uapsd |= WMI_AP_PS_UAPSD_AC2_DELIVERY_EN |
				 WMI_AP_PS_UAPSD_AC2_TRIGGER_EN;
		if (sta->uapsd_queues & IEEE80211_WMM_IE_STA_QOSINFO_AC_BK)
			uapsd |= WMI_AP_PS_UAPSD_AC1_DELIVERY_EN |
				 WMI_AP_PS_UAPSD_AC1_TRIGGER_EN;
		if (sta->uapsd_queues & IEEE80211_WMM_IE_STA_QOSINFO_AC_BE)
			uapsd |= WMI_AP_PS_UAPSD_AC0_DELIVERY_EN |
				 WMI_AP_PS_UAPSD_AC0_TRIGGER_EN;

		if (sta->max_sp < MAX_WMI_AP_PS_PEER_PARAM_MAX_SP)
			max_sp = sta->max_sp;

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		ret = ath10k_wmi_set_ap_ps_param(ar, arvif->vdev_id,
						 sta->addr,
						 WMI_AP_PS_PEER_PARAM_UAPSD,
						 uapsd);
		if (ret) {
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			ath10k_warn(ar, "failed to set ap ps peer param uapsd for vdev %i: %d\n",
2216
				    arvif->vdev_id, ret);
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			return ret;
		}
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		ret = ath10k_wmi_set_ap_ps_param(ar, arvif->vdev_id,
						 sta->addr,
						 WMI_AP_PS_PEER_PARAM_MAX_SP,
						 max_sp);
		if (ret) {
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			ath10k_warn(ar, "failed to set ap ps peer param max sp for vdev %i: %d\n",
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				    arvif->vdev_id, ret);
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			return ret;
		}
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		/* TODO setup this based on STA listen interval and
		   beacon interval. Currently we don't know
		   sta->listen_interval - mac80211 patch required.
		   Currently use 10 seconds */
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		ret = ath10k_wmi_set_ap_ps_param(ar, arvif->vdev_id, sta->addr,
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						 WMI_AP_PS_PEER_PARAM_AGEOUT_TIME,
						 10);
2237
		if (ret) {
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			ath10k_warn(ar, "failed to set ap ps peer param ageout time for vdev %i: %d\n",
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				    arvif->vdev_id, ret);
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			return ret;
		}
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	}

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	return 0;
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}

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static u16
ath10k_peer_assoc_h_vht_limit(u16 tx_mcs_set,
			      const u16 vht_mcs_limit[NL80211_VHT_NSS_MAX])
{
	int idx_limit;
	int nss;
	u16 mcs_map;
	u16 mcs;

	for (nss = 0; nss < NL80211_VHT_NSS_MAX; nss++) {
		mcs_map = ath10k_mac_get_max_vht_mcs_map(tx_mcs_set, nss) &
			  vht_mcs_limit[nss];

		if (mcs_map)
			idx_limit = fls(mcs_map) - 1;
		else
			idx_limit = -1;

		switch (idx_limit) {
		case 0: /* fall through */
		case 1: /* fall through */
		case 2: /* fall through */
		case 3: /* fall through */
		case 4: /* fall through */
		case 5: /* fall through */
		case 6: /* fall through */
		default:
			/* see ath10k_mac_can_set_bitrate_mask() */
			WARN_ON(1);
			/* fall through */
		case -1:
			mcs = IEEE80211_VHT_MCS_NOT_SUPPORTED;
			break;
		case 7:
			mcs = IEEE80211_VHT_MCS_SUPPORT_0_7;
			break;
		case 8:
			mcs = IEEE80211_VHT_MCS_SUPPORT_0_8;
			break;
		case 9:
			mcs = IEEE80211_VHT_MCS_SUPPORT_0_9;
			break;
		}

		tx_mcs_set &= ~(0x3 << (nss * 2));
		tx_mcs_set |= mcs << (nss * 2);
	}

	return tx_mcs_set;
}

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static void ath10k_peer_assoc_h_vht(struct ath10k *ar,
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				    struct ieee80211_vif *vif,
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				    struct ieee80211_sta *sta,
				    struct wmi_peer_assoc_complete_arg *arg)
{
	const struct ieee80211_sta_vht_cap *vht_cap = &sta->vht_cap;
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	struct ath10k_vif *arvif = ath10k_vif_to_arvif(vif);
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	struct cfg80211_chan_def def;
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	enum ieee80211_band band;
	const u16 *vht_mcs_mask;
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	u8 ampdu_factor;
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	if (WARN_ON(ath10k_mac_vif_chan(vif, &def)))
		return;

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	if (!vht_cap->vht_supported)
		return;

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	band = def.chan->band;
	vht_mcs_mask = arvif->bitrate_mask.control[band].vht_mcs;

	if (ath10k_peer_assoc_h_vht_masked(vht_mcs_mask))
		return;

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	arg->peer_flags |= WMI_PEER_VHT;
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	if (def.chan->band == IEEE80211_BAND_2GHZ)
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		arg->peer_flags |= WMI_PEER_VHT_2G;

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	arg->peer_vht_caps = vht_cap->cap;

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	ampdu_factor = (vht_cap->cap &
			IEEE80211_VHT_CAP_MAX_A_MPDU_LENGTH_EXPONENT_MASK) >>
		       IEEE80211_VHT_CAP_MAX_A_MPDU_LENGTH_EXPONENT_SHIFT;

	/* Workaround: Some Netgear/Linksys 11ac APs set Rx A-MPDU factor to
	 * zero in VHT IE. Using it would result in degraded throughput.
	 * arg->peer_max_mpdu at this point contains HT max_mpdu so keep
	 * it if VHT max_mpdu is smaller. */
	arg->peer_max_mpdu = max(arg->peer_max_mpdu,
				 (1U << (IEEE80211_HT_MAX_AMPDU_FACTOR +
					ampdu_factor)) - 1);

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	if (sta->bandwidth == IEEE80211_STA_RX_BW_80)
		arg->peer_flags |= WMI_PEER_80MHZ;

	arg->peer_vht_rates.rx_max_rate =
		__le16_to_cpu(vht_cap->vht_mcs.rx_highest);
	arg->peer_vht_rates.rx_mcs_set =
		__le16_to_cpu(vht_cap->vht_mcs.rx_mcs_map);
	arg->peer_vht_rates.tx_max_rate =
		__le16_to_cpu(vht_cap->vht_mcs.tx_highest);
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	arg->peer_vht_rates.tx_mcs_set = ath10k_peer_assoc_h_vht_limit(
		__le16_to_cpu(vht_cap->vht_mcs.tx_mcs_map), vht_mcs_mask);
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	ath10k_dbg(ar, ATH10K_DBG_MAC, "mac vht peer %pM max_mpdu %d flags 0x%x\n",
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		   sta->addr, arg->peer_max_mpdu, arg->peer_flags);
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}

static void ath10k_peer_assoc_h_qos(struct ath10k *ar,
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				    struct ieee80211_vif *vif,
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				    struct ieee80211_sta *sta,
				    struct wmi_peer_assoc_complete_arg *arg)
{
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	struct ath10k_vif *arvif = ath10k_vif_to_arvif(vif);

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	switch (arvif->vdev_type) {
	case WMI_VDEV_TYPE_AP:
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		if (sta->wme)
			arg->peer_flags |= WMI_PEER_QOS;

		if (sta->wme && sta->uapsd_queues) {
			arg->peer_flags |= WMI_PEER_APSD;
			arg->peer_rate_caps |= WMI_RC_UAPSD_FLAG;
		}
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		break;
	case WMI_VDEV_TYPE_STA:
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		if (vif->bss_conf.qos)
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			arg->peer_flags |= WMI_PEER_QOS;
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		break;
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	case WMI_VDEV_TYPE_IBSS:
		if (sta->wme)
			arg->peer_flags |= WMI_PEER_QOS;
		break;
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	default:
		break;
	}
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	ath10k_dbg(ar, ATH10K_DBG_MAC, "mac peer %pM qos %d\n",
		   sta->addr, !!(arg->peer_flags & WMI_PEER_QOS));
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}

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static bool ath10k_mac_sta_has_ofdm_only(struct ieee80211_sta *sta)
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{
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	return sta->supp_rates[IEEE80211_BAND_2GHZ] >>
	       ATH10K_MAC_FIRST_OFDM_RATE_IDX;
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}

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static void ath10k_peer_assoc_h_phymode(struct ath10k *ar,
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					struct ieee80211_vif *vif,
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					struct ieee80211_sta *sta,
					struct wmi_peer_assoc_complete_arg *arg)
{
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	struct ath10k_vif *arvif = ath10k_vif_to_arvif(vif);
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	struct cfg80211_chan_def def;
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	enum ieee80211_band band;
	const u8 *ht_mcs_mask;
	const u16 *vht_mcs_mask;
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	enum wmi_phy_mode phymode = MODE_UNKNOWN;

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	if (WARN_ON(ath10k_mac_vif_chan(vif, &def)))
		return;

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	band = def.chan->band;
	ht_mcs_mask = arvif->bitrate_mask.control[band].ht_mcs;
	vht_mcs_mask = arvif->bitrate_mask.control[band].vht_mcs;

	switch (band) {
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	case IEEE80211_BAND_2GHZ:
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		if (sta->vht_cap.vht_supported &&
		    !ath10k_peer_assoc_h_vht_masked(vht_mcs_mask)) {
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			if (sta->bandwidth == IEEE80211_STA_RX_BW_40)
				phymode = MODE_11AC_VHT40;
			else
				phymode = MODE_11AC_VHT20;
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		} else if (sta->ht_cap.ht_supported &&
			   !ath10k_peer_assoc_h_ht_masked(ht_mcs_mask)) {
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			if (sta->bandwidth == IEEE80211_STA_RX_BW_40)
				phymode = MODE_11NG_HT40;
			else
				phymode = MODE_11NG_HT20;
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		} else if (ath10k_mac_sta_has_ofdm_only(sta)) {
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			phymode = MODE_11G;
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		} else {
			phymode = MODE_11B;
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		}

		break;
	case IEEE80211_BAND_5GHZ:
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		/*
		 * Check VHT first.
		 */
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		if (sta->vht_cap.vht_supported &&
		    !ath10k_peer_assoc_h_vht_masked(vht_mcs_mask)) {
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			if (sta->bandwidth == IEEE80211_STA_RX_BW_80)
				phymode = MODE_11AC_VHT80;
			else if (sta->bandwidth == IEEE80211_STA_RX_BW_40)
				phymode = MODE_11AC_VHT40;
			else if (sta->bandwidth == IEEE80211_STA_RX_BW_20)
				phymode = MODE_11AC_VHT20;
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		} else if (sta->ht_cap.ht_supported &&
			   !ath10k_peer_assoc_h_ht_masked(ht_mcs_mask)) {
			if (sta->bandwidth >= IEEE80211_STA_RX_BW_40)
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				phymode = MODE_11NA_HT40;
			else
				phymode = MODE_11NA_HT20;
		} else {
			phymode = MODE_11A;
		}

		break;
	default:
		break;
	}

2463
	ath10k_dbg(ar, ATH10K_DBG_MAC, "mac peer %pM phymode %s\n",
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		   sta->addr, ath10k_wmi_phymode_str(phymode));
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	arg->peer_phymode = phymode;
	WARN_ON(phymode == MODE_UNKNOWN);
}

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static int ath10k_peer_assoc_prepare(struct ath10k *ar,
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				     struct ieee80211_vif *vif,
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				     struct ieee80211_sta *sta,
				     struct wmi_peer_assoc_complete_arg *arg)
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{
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	lockdep_assert_held(&ar->conf_mutex);

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	memset(arg, 0, sizeof(*arg));
2478

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	ath10k_peer_assoc_h_basic(ar, vif, sta, arg);
	ath10k_peer_assoc_h_crypto(ar, vif, arg);
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	ath10k_peer_assoc_h_rates(ar, vif, sta, arg);
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	ath10k_peer_assoc_h_ht(ar, vif, sta, arg);
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	ath10k_peer_assoc_h_vht(ar, vif, sta, arg);
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	ath10k_peer_assoc_h_qos(ar, vif, sta, arg);
	ath10k_peer_assoc_h_phymode(ar, vif, sta, arg);
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	return 0;
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}

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static const u32 ath10k_smps_map[] = {
	[WLAN_HT_CAP_SM_PS_STATIC] = WMI_PEER_SMPS_STATIC,
	[WLAN_HT_CAP_SM_PS_DYNAMIC] = WMI_PEER_SMPS_DYNAMIC,
	[WLAN_HT_CAP_SM_PS_INVALID] = WMI_PEER_SMPS_PS_NONE,
	[WLAN_HT_CAP_SM_PS_DISABLED] = WMI_PEER_SMPS_PS_NONE,
};

static int ath10k_setup_peer_smps(struct ath10k *ar, struct ath10k_vif *arvif,
				  const u8 *addr,
				  const struct ieee80211_sta_ht_cap *ht_cap)
{
	int smps;

	if (!ht_cap->ht_supported)
		return 0;

	smps = ht_cap->cap & IEEE80211_HT_CAP_SM_PS;
	smps >>= IEEE80211_HT_CAP_SM_PS_SHIFT;

	if (smps >= ARRAY_SIZE(ath10k_smps_map))
		return -EINVAL;

	return ath10k_wmi_peer_set_param(ar, arvif->vdev_id, addr,
					 WMI_PEER_SMPS_STATE,
					 ath10k_smps_map[smps]);
}

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static int ath10k_mac_vif_recalc_txbf(struct ath10k *ar,
				      struct ieee80211_vif *vif,
				      struct ieee80211_sta_vht_cap vht_cap)
{
	struct ath10k_vif *arvif = ath10k_vif_to_arvif(vif);
	int ret;
	u32 param;
	u32 value;

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	if (ath10k_wmi_get_txbf_conf_scheme(ar) != WMI_TXBF_CONF_AFTER_ASSOC)
		return 0;

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	if (!(ar->vht_cap_info &
	      (IEEE80211_VHT_CAP_SU_BEAMFORMEE_CAPABLE |
	       IEEE80211_VHT_CAP_MU_BEAMFORMEE_CAPABLE |
	       IEEE80211_VHT_CAP_SU_BEAMFORMER_CAPABLE |
	       IEEE80211_VHT_CAP_MU_BEAMFORMER_CAPABLE)))
		return 0;

	param = ar->wmi.vdev_param->txbf;
	value = 0;

	if (WARN_ON(param == WMI_VDEV_PARAM_UNSUPPORTED))
		return 0;

	/* The following logic is correct. If a remote STA advertises support
	 * for being a beamformer then we should enable us being a beamformee.
	 */

	if (ar->vht_cap_info &
	    (IEEE80211_VHT_CAP_SU_BEAMFORMEE_CAPABLE |
	     IEEE80211_VHT_CAP_MU_BEAMFORMEE_CAPABLE)) {
		if (vht_cap.cap & IEEE80211_VHT_CAP_SU_BEAMFORMER_CAPABLE)
			value |= WMI_VDEV_PARAM_TXBF_SU_TX_BFEE;

		if (vht_cap.cap & IEEE80211_VHT_CAP_MU_BEAMFORMER_CAPABLE)
			value |= WMI_VDEV_PARAM_TXBF_MU_TX_BFEE;
	}

	if (ar->vht_cap_info &
	    (IEEE80211_VHT_CAP_SU_BEAMFORMER_CAPABLE |
	     IEEE80211_VHT_CAP_MU_BEAMFORMER_CAPABLE)) {
		if (vht_cap.cap & IEEE80211_VHT_CAP_SU_BEAMFORMEE_CAPABLE)
			value |= WMI_VDEV_PARAM_TXBF_SU_TX_BFER;

		if (vht_cap.cap & IEEE80211_VHT_CAP_MU_BEAMFORMEE_CAPABLE)
			value |= WMI_VDEV_PARAM_TXBF_MU_TX_BFER;
	}

	if (value & WMI_VDEV_PARAM_TXBF_MU_TX_BFEE)
		value |= WMI_VDEV_PARAM_TXBF_SU_TX_BFEE;

	if (value & WMI_VDEV_PARAM_TXBF_MU_TX_BFER)
		value |= WMI_VDEV_PARAM_TXBF_SU_TX_BFER;

	ret = ath10k_wmi_vdev_set_param(ar, arvif->vdev_id, param, value);
	if (ret) {
		ath10k_warn(ar, "failed to submit vdev param txbf 0x%x: %d\n",
			    value, ret);
		return ret;
	}

	return 0;
}

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/* can be called only in mac80211 callbacks due to `key_count` usage */
static void ath10k_bss_assoc(struct ieee80211_hw *hw,
			     struct ieee80211_vif *vif,
			     struct ieee80211_bss_conf *bss_conf)
{
	struct ath10k *ar = hw->priv;
	struct ath10k_vif *arvif = ath10k_vif_to_arvif(vif);
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	struct ieee80211_sta_ht_cap ht_cap;
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	struct ieee80211_sta_vht_cap vht_cap;
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	struct wmi_peer_assoc_complete_arg peer_arg;
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	struct ieee80211_sta *ap_sta;
	int ret;

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	lockdep_assert_held(&ar->conf_mutex);

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	ath10k_dbg(ar, ATH10K_DBG_MAC, "mac vdev %i assoc bssid %pM aid %d\n",
		   arvif->vdev_id, arvif->bssid, arvif->aid);

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	rcu_read_lock();

	ap_sta = ieee80211_find_sta(vif, bss_conf->bssid);
	if (!ap_sta) {
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		ath10k_warn(ar, "failed to find station entry for bss %pM vdev %i\n",
2605
			    bss_conf->bssid, arvif->vdev_id);
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		rcu_read_unlock();
		return;
	}

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	/* ap_sta must be accessed only within rcu section which must be left
	 * before calling ath10k_setup_peer_smps() which might sleep. */
	ht_cap = ap_sta->ht_cap;
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	vht_cap = ap_sta->vht_cap;
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	ret = ath10k_peer_assoc_prepare(ar, vif, ap_sta, &peer_arg);
2616
	if (ret) {
2617
		ath10k_warn(ar, "failed to prepare peer assoc for %pM vdev %i: %d\n",
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			    bss_conf->bssid, arvif->vdev_id, ret);
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		rcu_read_unlock();
		return;
	}

	rcu_read_unlock();

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	ret = ath10k_wmi_peer_assoc(ar, &peer_arg);
	if (ret) {
2627
		ath10k_warn(ar, "failed to run peer assoc for %pM vdev %i: %d\n",
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			    bss_conf->bssid, arvif->vdev_id, ret);
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		return;
	}

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	ret = ath10k_setup_peer_smps(ar, arvif, bss_conf->bssid, &ht_cap);
	if (ret) {
2634
		ath10k_warn(ar, "failed to setup peer SMPS for vdev %i: %d\n",
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			    arvif->vdev_id, ret);
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		return;
	}

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	ret = ath10k_mac_vif_recalc_txbf(ar, vif, vht_cap);
	if (ret) {
		ath10k_warn(ar, "failed to recalc txbf for vdev %i on bss %pM: %d\n",
			    arvif->vdev_id, bss_conf->bssid, ret);
		return;
	}

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	ath10k_dbg(ar, ATH10K_DBG_MAC,
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		   "mac vdev %d up (associated) bssid %pM aid %d\n",
		   arvif->vdev_id, bss_conf->bssid, bss_conf->aid);

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	WARN_ON(arvif->is_up);

2652
	arvif->aid = bss_conf->aid;
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	ether_addr_copy(arvif->bssid, bss_conf->bssid);
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	ret = ath10k_wmi_vdev_up(ar, arvif->vdev_id, arvif->aid, arvif->bssid);
	if (ret) {
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		ath10k_warn(ar, "failed to set vdev %d up: %d\n",
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			    arvif->vdev_id, ret);
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		return;
	}

	arvif->is_up = true;
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	/* Workaround: Some firmware revisions (tested with qca6174
	 * WLAN.RM.2.0-00073) have buggy powersave state machine and must be
	 * poked with peer param command.
	 */
	ret = ath10k_wmi_peer_set_param(ar, arvif->vdev_id, arvif->bssid,
					WMI_PEER_DUMMY_VAR, 1);
	if (ret) {
		ath10k_warn(ar, "failed to poke peer %pM param for ps workaround on vdev %i: %d\n",
			    arvif->bssid, arvif->vdev_id, ret);
		return;
	}
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}

static void ath10k_bss_disassoc(struct ieee80211_hw *hw,
				struct ieee80211_vif *vif)
{
	struct ath10k *ar = hw->priv;
	struct ath10k_vif *arvif = ath10k_vif_to_arvif(vif);
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	struct ieee80211_sta_vht_cap vht_cap = {};
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	int ret;

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	lockdep_assert_held(&ar->conf_mutex);

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	ath10k_dbg(ar, ATH10K_DBG_MAC, "mac vdev %i disassoc bssid %pM\n",
		   arvif->vdev_id, arvif->bssid);
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	ret = ath10k_wmi_vdev_down(ar, arvif->vdev_id);
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	if (ret)
		ath10k_warn(ar, "faield to down vdev %i: %d\n",
			    arvif->vdev_id, ret);
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	arvif->def_wep_key_idx = -1;

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	ret = ath10k_mac_vif_recalc_txbf(ar, vif, vht_cap);
	if (ret) {
		ath10k_warn(ar, "failed to recalc txbf for vdev %i: %d\n",
			    arvif->vdev_id, ret);
		return;
	}

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	arvif->is_up = false;
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	cancel_delayed_work_sync(&arvif->connection_loss_work);
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}

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static int ath10k_station_assoc(struct ath10k *ar,
				struct ieee80211_vif *vif,
				struct ieee80211_sta *sta,
				bool reassoc)
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{
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	struct ath10k_vif *arvif = ath10k_vif_to_arvif(vif);
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	struct wmi_peer_assoc_complete_arg peer_arg;
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	int ret = 0;

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	lockdep_assert_held(&ar->conf_mutex);

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	ret = ath10k_peer_assoc_prepare(ar, vif, sta, &peer_arg);
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	if (ret) {
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		ath10k_warn(ar, "failed to prepare WMI peer assoc for %pM vdev %i: %i\n",
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			    sta->addr, arvif->vdev_id, ret);
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		return ret;
	}

	ret = ath10k_wmi_peer_assoc(ar, &peer_arg);
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	if (ret) {
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		ath10k_warn(ar, "failed to run peer assoc for STA %pM vdev %i: %d\n",
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			    sta->addr, arvif->vdev_id, ret);
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		return ret;
	}

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	/* Re-assoc is run only to update supported rates for given station. It
	 * doesn't make much sense to reconfigure the peer completely.
	 */
	if (!reassoc) {
		ret = ath10k_setup_peer_smps(ar, arvif, sta->addr,
					     &sta->ht_cap);
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		if (ret) {
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			ath10k_warn(ar, "failed to setup peer SMPS for vdev %d: %d\n",
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				    arvif->vdev_id, ret);
			return ret;
		}

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		ret = ath10k_peer_assoc_qos_ap(ar, arvif, sta);
		if (ret) {
			ath10k_warn(ar, "failed to set qos params for STA %pM for vdev %i: %d\n",
				    sta->addr, arvif->vdev_id, ret);
			return ret;
		}
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		if (!sta->wme) {
			arvif->num_legacy_stations++;
			ret  = ath10k_recalc_rtscts_prot(arvif);
			if (ret) {
				ath10k_warn(ar, "failed to recalculate rts/cts prot for vdev %d: %d\n",
					    arvif->vdev_id, ret);
				return ret;
			}
		}

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		/* Plumb cached keys only for static WEP */
		if (arvif->def_wep_key_idx != -1) {
			ret = ath10k_install_peer_wep_keys(arvif, sta->addr);
			if (ret) {
				ath10k_warn(ar, "failed to install peer wep keys for vdev %i: %d\n",
					    arvif->vdev_id, ret);
				return ret;
			}
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		}
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	}

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	return ret;
}

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static int ath10k_station_disassoc(struct ath10k *ar,
				   struct ieee80211_vif *vif,
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				   struct ieee80211_sta *sta)
{
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	struct ath10k_vif *arvif = ath10k_vif_to_arvif(vif);
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	int ret = 0;

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	lockdep_assert_held(&ar->conf_mutex);

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	if (!sta->wme) {
		arvif->num_legacy_stations--;
		ret = ath10k_recalc_rtscts_prot(arvif);
		if (ret) {
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			ath10k_warn(ar, "failed to recalculate rts/cts prot for vdev %d: %d\n",
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				    arvif->vdev_id, ret);
			return ret;
		}
	}

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	ret = ath10k_clear_peer_keys(arvif, sta->addr);
	if (ret) {
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		ath10k_warn(ar, "failed to clear all peer wep keys for vdev %i: %d\n",
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			    arvif->vdev_id, ret);
2800 2801 2802 2803 2804 2805 2806 2807 2808 2809 2810 2811 2812 2813 2814 2815 2816 2817 2818 2819 2820 2821 2822
		return ret;
	}

	return ret;
}

/**************/
/* Regulatory */
/**************/

static int ath10k_update_channel_list(struct ath10k *ar)
{
	struct ieee80211_hw *hw = ar->hw;
	struct ieee80211_supported_band **bands;
	enum ieee80211_band band;
	struct ieee80211_channel *channel;
	struct wmi_scan_chan_list_arg arg = {0};
	struct wmi_channel_arg *ch;
	bool passive;
	int len;
	int ret;
	int i;

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	lockdep_assert_held(&ar->conf_mutex);

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	bands = hw->wiphy->bands;
	for (band = 0; band < IEEE80211_NUM_BANDS; band++) {
		if (!bands[band])
			continue;

		for (i = 0; i < bands[band]->n_channels; i++) {
			if (bands[band]->channels[i].flags &
			    IEEE80211_CHAN_DISABLED)
				continue;

			arg.n_channels++;
		}
	}

	len = sizeof(struct wmi_channel_arg) * arg.n_channels;
	arg.channels = kzalloc(len, GFP_KERNEL);
	if (!arg.channels)
		return -ENOMEM;

	ch = arg.channels;
	for (band = 0; band < IEEE80211_NUM_BANDS; band++) {
		if (!bands[band])
			continue;

		for (i = 0; i < bands[band]->n_channels; i++) {
			channel = &bands[band]->channels[i];

			if (channel->flags & IEEE80211_CHAN_DISABLED)
				continue;

			ch->allow_ht   = true;

			/* FIXME: when should we really allow VHT? */
			ch->allow_vht = true;

			ch->allow_ibss =
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				!(channel->flags & IEEE80211_CHAN_NO_IR);
2862 2863 2864 2865

			ch->ht40plus =
				!(channel->flags & IEEE80211_CHAN_NO_HT40PLUS);

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			ch->chan_radar =
				!!(channel->flags & IEEE80211_CHAN_RADAR);

2869
			passive = channel->flags & IEEE80211_CHAN_NO_IR;
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			ch->passive = passive;

			ch->freq = channel->center_freq;
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			ch->band_center_freq1 = channel->center_freq;
2874
			ch->min_power = 0;
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			ch->max_power = channel->max_power * 2;
			ch->max_reg_power = channel->max_reg_power * 2;
			ch->max_antenna_gain = channel->max_antenna_gain * 2;
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			ch->reg_class_id = 0; /* FIXME */

			/* FIXME: why use only legacy modes, why not any
			 * HT/VHT modes? Would that even make any
			 * difference? */
			if (channel->band == IEEE80211_BAND_2GHZ)
				ch->mode = MODE_11G;
			else
				ch->mode = MODE_11A;

			if (WARN_ON_ONCE(ch->mode == MODE_UNKNOWN))
				continue;

2891
			ath10k_dbg(ar, ATH10K_DBG_WMI,
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				   "mac channel [%zd/%d] freq %d maxpower %d regpower %d antenna %d mode %d\n",
				    ch - arg.channels, arg.n_channels,
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				   ch->freq, ch->max_power, ch->max_reg_power,
				   ch->max_antenna_gain, ch->mode);

			ch++;
		}
	}

	ret = ath10k_wmi_scan_chan_list(ar, &arg);
	kfree(arg.channels);

	return ret;
}

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static enum wmi_dfs_region
ath10k_mac_get_dfs_region(enum nl80211_dfs_regions dfs_region)
{
	switch (dfs_region) {
	case NL80211_DFS_UNSET:
		return WMI_UNINIT_DFS_DOMAIN;
	case NL80211_DFS_FCC:
		return WMI_FCC_DFS_DOMAIN;
	case NL80211_DFS_ETSI:
		return WMI_ETSI_DFS_DOMAIN;
	case NL80211_DFS_JP:
		return WMI_MKK4_DFS_DOMAIN;
	}
	return WMI_UNINIT_DFS_DOMAIN;
}

2923
static void ath10k_regd_update(struct ath10k *ar)
2924 2925 2926
{
	struct reg_dmn_pair_mapping *regpair;
	int ret;
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	enum wmi_dfs_region wmi_dfs_reg;
	enum nl80211_dfs_regions nl_dfs_reg;
2929

2930
	lockdep_assert_held(&ar->conf_mutex);
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	ret = ath10k_update_channel_list(ar);
	if (ret)
2934
		ath10k_warn(ar, "failed to update channel list: %d\n", ret);
2935 2936

	regpair = ar->ath_common.regulatory.regpair;
2937

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	if (config_enabled(CONFIG_ATH10K_DFS_CERTIFIED) && ar->dfs_detector) {
		nl_dfs_reg = ar->dfs_detector->region;
		wmi_dfs_reg = ath10k_mac_get_dfs_region(nl_dfs_reg);
	} else {
		wmi_dfs_reg = WMI_UNINIT_DFS_DOMAIN;
	}

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	/* Target allows setting up per-band regdomain but ath_common provides
	 * a combined one only */
	ret = ath10k_wmi_pdev_set_regdomain(ar,
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					    regpair->reg_domain,
					    regpair->reg_domain, /* 2ghz */
					    regpair->reg_domain, /* 5ghz */
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					    regpair->reg_2ghz_ctl,
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					    regpair->reg_5ghz_ctl,
					    wmi_dfs_reg);
2954
	if (ret)
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		ath10k_warn(ar, "failed to set pdev regdomain: %d\n", ret);
2956
}
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2957

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static void ath10k_reg_notifier(struct wiphy *wiphy,
				struct regulatory_request *request)
{
	struct ieee80211_hw *hw = wiphy_to_ieee80211_hw(wiphy);
	struct ath10k *ar = hw->priv;
2963
	bool result;
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	ath_reg_notifier_apply(wiphy, request, &ar->ath_common.regulatory);

2967
	if (config_enabled(CONFIG_ATH10K_DFS_CERTIFIED) && ar->dfs_detector) {
2968
		ath10k_dbg(ar, ATH10K_DBG_REGULATORY, "dfs region 0x%x\n",
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			   request->dfs_region);
		result = ar->dfs_detector->set_dfs_domain(ar->dfs_detector,
							  request->dfs_region);
		if (!result)
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			ath10k_warn(ar, "DFS region 0x%X not supported, will trigger radar for every pulse\n",
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				    request->dfs_region);
	}

2977 2978 2979
	mutex_lock(&ar->conf_mutex);
	if (ar->state == ATH10K_STATE_ON)
		ath10k_regd_update(ar);
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	mutex_unlock(&ar->conf_mutex);
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}

/***************/
/* TX handlers */
/***************/

2987
void ath10k_mac_tx_lock(struct ath10k *ar, int reason)
2988
{
2989
	lockdep_assert_held(&ar->htt.tx_lock);
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	WARN_ON(reason >= ATH10K_TX_PAUSE_MAX);
	ar->tx_paused |= BIT(reason);
	ieee80211_stop_queues(ar->hw);
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}

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static void ath10k_mac_tx_unlock_iter(void *data, u8 *mac,
				      struct ieee80211_vif *vif)
2998
{
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	struct ath10k *ar = data;
	struct ath10k_vif *arvif = ath10k_vif_to_arvif(vif);
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	if (arvif->tx_paused)
		return;
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	ieee80211_wake_queue(ar->hw, arvif->vdev_id);
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}

3008
void ath10k_mac_tx_unlock(struct ath10k *ar, int reason)
3009
{
3010
	lockdep_assert_held(&ar->htt.tx_lock);
3011

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	WARN_ON(reason >= ATH10K_TX_PAUSE_MAX);
	ar->tx_paused &= ~BIT(reason);
3014

3015 3016
	if (ar->tx_paused)
		return;
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	ieee80211_iterate_active_interfaces_atomic(ar->hw,
						   IEEE80211_IFACE_ITER_RESUME_ALL,
						   ath10k_mac_tx_unlock_iter,
						   ar);
3022 3023

	ieee80211_wake_queue(ar->hw, ar->hw->offchannel_tx_hw_queue);
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}

3026
void ath10k_mac_vif_tx_lock(struct ath10k_vif *arvif, int reason)
3027
{
3028
	struct ath10k *ar = arvif->ar;
3029

3030
	lockdep_assert_held(&ar->htt.tx_lock);
3031

3032 3033 3034 3035 3036 3037 3038 3039 3040 3041 3042 3043 3044 3045 3046 3047 3048 3049 3050 3051 3052 3053 3054
	WARN_ON(reason >= BITS_PER_LONG);
	arvif->tx_paused |= BIT(reason);
	ieee80211_stop_queue(ar->hw, arvif->vdev_id);
}

void ath10k_mac_vif_tx_unlock(struct ath10k_vif *arvif, int reason)
{
	struct ath10k *ar = arvif->ar;

	lockdep_assert_held(&ar->htt.tx_lock);

	WARN_ON(reason >= BITS_PER_LONG);
	arvif->tx_paused &= ~BIT(reason);

	if (ar->tx_paused)
		return;

	if (arvif->tx_paused)
		return;

	ieee80211_wake_queue(ar->hw, arvif->vdev_id);
}

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static void ath10k_mac_vif_handle_tx_pause(struct ath10k_vif *arvif,
					   enum wmi_tlv_tx_pause_id pause_id,
					   enum wmi_tlv_tx_pause_action action)
{
	struct ath10k *ar = arvif->ar;

	lockdep_assert_held(&ar->htt.tx_lock);

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	switch (action) {
	case WMI_TLV_TX_PAUSE_ACTION_STOP:
		ath10k_mac_vif_tx_lock(arvif, pause_id);
		break;
	case WMI_TLV_TX_PAUSE_ACTION_WAKE:
		ath10k_mac_vif_tx_unlock(arvif, pause_id);
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		break;
	default:
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		ath10k_warn(ar, "received unknown tx pause action %d on vdev %i, ignoring\n",
			    action, arvif->vdev_id);
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		break;
	}
}

struct ath10k_mac_tx_pause {
	u32 vdev_id;
	enum wmi_tlv_tx_pause_id pause_id;
	enum wmi_tlv_tx_pause_action action;
};

static void ath10k_mac_handle_tx_pause_iter(void *data, u8 *mac,
					    struct ieee80211_vif *vif)
{
	struct ath10k_vif *arvif = ath10k_vif_to_arvif(vif);
	struct ath10k_mac_tx_pause *arg = data;

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	if (arvif->vdev_id != arg->vdev_id)
		return;

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	ath10k_mac_vif_handle_tx_pause(arvif, arg->pause_id, arg->action);
}

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void ath10k_mac_handle_tx_pause_vdev(struct ath10k *ar, u32 vdev_id,
				     enum wmi_tlv_tx_pause_id pause_id,
				     enum wmi_tlv_tx_pause_action action)
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{
	struct ath10k_mac_tx_pause arg = {
		.vdev_id = vdev_id,
		.pause_id = pause_id,
		.action = action,
	};

	spin_lock_bh(&ar->htt.tx_lock);
	ieee80211_iterate_active_interfaces_atomic(ar->hw,
						   IEEE80211_IFACE_ITER_RESUME_ALL,
						   ath10k_mac_handle_tx_pause_iter,
						   &arg);
	spin_unlock_bh(&ar->htt.tx_lock);
}

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static u8 ath10k_tx_h_get_tid(struct ieee80211_hdr *hdr)
{
	if (ieee80211_is_mgmt(hdr->frame_control))
		return HTT_DATA_TX_EXT_TID_MGMT;

	if (!ieee80211_is_data_qos(hdr->frame_control))
		return HTT_DATA_TX_EXT_TID_NON_QOS_MCAST_BCAST;

	if (!is_unicast_ether_addr(ieee80211_get_DA(hdr)))
		return HTT_DATA_TX_EXT_TID_NON_QOS_MCAST_BCAST;

	return ieee80211_get_qos_ctl(hdr)[0] & IEEE80211_QOS_CTL_TID_MASK;
}

3127
static u8 ath10k_tx_h_get_vdev_id(struct ath10k *ar, struct ieee80211_vif *vif)
3128
{
3129 3130
	if (vif)
		return ath10k_vif_to_arvif(vif)->vdev_id;
3131

3132
	if (ar->monitor_started)
3133 3134
		return ar->monitor_vdev_id;

3135
	ath10k_warn(ar, "failed to resolve vdev id\n");
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	return 0;
}

3139 3140
static enum ath10k_hw_txrx_mode
ath10k_tx_h_get_txmode(struct ath10k *ar, struct ieee80211_vif *vif,
3141
		       struct ieee80211_sta *sta, struct sk_buff *skb)
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{
	const struct ieee80211_hdr *hdr = (void *)skb->data;
	__le16 fc = hdr->frame_control;

	if (!vif || vif->type == NL80211_IFTYPE_MONITOR)
		return ATH10K_HW_TXRX_RAW;

	if (ieee80211_is_mgmt(fc))
		return ATH10K_HW_TXRX_MGMT;

	/* Workaround:
	 *
	 * NullFunc frames are mostly used to ping if a client or AP are still
	 * reachable and responsive. This implies tx status reports must be
	 * accurate - otherwise either mac80211 or userspace (e.g. hostapd) can
	 * come to a conclusion that the other end disappeared and tear down
	 * BSS connection or it can never disconnect from BSS/client (which is
	 * the case).
	 *
	 * Firmware with HTT older than 3.0 delivers incorrect tx status for
	 * NullFunc frames to driver. However there's a HTT Mgmt Tx command
	 * which seems to deliver correct tx reports for NullFunc frames. The
	 * downside of using it is it ignores client powersave state so it can
	 * end up disconnecting sleeping clients in AP mode. It should fix STA
	 * mode though because AP don't sleep.
	 */
	if (ar->htt.target_version_major < 3 &&
	    (ieee80211_is_nullfunc(fc) || ieee80211_is_qos_nullfunc(fc)) &&
	    !test_bit(ATH10K_FW_FEATURE_HAS_WMI_MGMT_TX, ar->fw_features))
		return ATH10K_HW_TXRX_MGMT;

3173 3174 3175 3176 3177
	/* Workaround:
	 *
	 * Some wmi-tlv firmwares for qca6174 have broken Tx key selection for
	 * NativeWifi txmode - it selects AP key instead of peer key. It seems
	 * to work with Ethernet txmode so use it.
3178 3179
	 *
	 * FIXME: Check if raw mode works with TDLS.
3180 3181 3182 3183
	 */
	if (ieee80211_is_data_present(fc) && sta && sta->tdls)
		return ATH10K_HW_TXRX_ETHERNET;

3184 3185 3186
	if (test_bit(ATH10K_FLAG_RAW_MODE, &ar->dev_flags))
		return ATH10K_HW_TXRX_RAW;

3187 3188 3189
	return ATH10K_HW_TXRX_NATIVE_WIFI;
}

3190 3191 3192 3193 3194 3195 3196 3197 3198 3199 3200 3201
static bool ath10k_tx_h_use_hwcrypto(struct ieee80211_vif *vif,
				     struct sk_buff *skb) {
	struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
	const u32 mask = IEEE80211_TX_INTFL_DONT_ENCRYPT |
			 IEEE80211_TX_CTL_INJECTED;
	if ((info->flags & mask) == mask)
		return false;
	if (vif)
		return !ath10k_vif_to_arvif(vif)->nohwcrypt;
	return true;
}

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3202 3203
/* HTT Tx uses Native Wifi tx mode which expects 802.11 frames without QoS
 * Control in the header.
3204
 */
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3205
static void ath10k_tx_h_nwifi(struct ieee80211_hw *hw, struct sk_buff *skb)
3206 3207
{
	struct ieee80211_hdr *hdr = (void *)skb->data;
3208
	struct ath10k_skb_cb *cb = ATH10K_SKB_CB(skb);
3209 3210 3211 3212 3213 3214
	u8 *qos_ctl;

	if (!ieee80211_is_data_qos(hdr->frame_control))
		return;

	qos_ctl = ieee80211_get_qos_ctl(hdr);
3215 3216 3217
	memmove(skb->data + IEEE80211_QOS_CTL_LEN,
		skb->data, (void *)qos_ctl - (void *)skb->data);
	skb_pull(skb, IEEE80211_QOS_CTL_LEN);
3218

3219 3220 3221
	/* Some firmware revisions don't handle sending QoS NullFunc well.
	 * These frames are mainly used for CQM purposes so it doesn't really
	 * matter whether QoS NullFunc or NullFunc are sent.
3222
	 */
3223
	hdr = (void *)skb->data;
3224
	if (ieee80211_is_qos_nullfunc(hdr->frame_control))
3225
		cb->htt.tid = HTT_DATA_TX_EXT_TID_NON_QOS_MCAST_BCAST;
3226 3227

	hdr->frame_control &= ~__cpu_to_le16(IEEE80211_STYPE_QOS_DATA);
3228 3229
}

3230 3231 3232 3233 3234 3235 3236 3237 3238 3239 3240 3241 3242 3243 3244 3245 3246 3247 3248 3249 3250 3251 3252 3253 3254
static void ath10k_tx_h_8023(struct sk_buff *skb)
{
	struct ieee80211_hdr *hdr;
	struct rfc1042_hdr *rfc1042;
	struct ethhdr *eth;
	size_t hdrlen;
	u8 da[ETH_ALEN];
	u8 sa[ETH_ALEN];
	__be16 type;

	hdr = (void *)skb->data;
	hdrlen = ieee80211_hdrlen(hdr->frame_control);
	rfc1042 = (void *)skb->data + hdrlen;

	ether_addr_copy(da, ieee80211_get_DA(hdr));
	ether_addr_copy(sa, ieee80211_get_SA(hdr));
	type = rfc1042->snap_type;

	skb_pull(skb, hdrlen + sizeof(*rfc1042));
	skb_push(skb, sizeof(*eth));

	eth = (void *)skb->data;
	ether_addr_copy(eth->h_dest, da);
	ether_addr_copy(eth->h_source, sa);
	eth->h_proto = type;
3255 3256
}

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static void ath10k_tx_h_add_p2p_noa_ie(struct ath10k *ar,
				       struct ieee80211_vif *vif,
				       struct sk_buff *skb)
3260 3261 3262 3263 3264 3265 3266 3267 3268 3269 3270 3271 3272 3273 3274 3275 3276 3277 3278 3279 3280
{
	struct ieee80211_hdr *hdr = (struct ieee80211_hdr *)skb->data;
	struct ath10k_vif *arvif = ath10k_vif_to_arvif(vif);

	/* This is case only for P2P_GO */
	if (arvif->vdev_type != WMI_VDEV_TYPE_AP ||
	    arvif->vdev_subtype != WMI_VDEV_SUBTYPE_P2P_GO)
		return;

	if (unlikely(ieee80211_is_probe_resp(hdr->frame_control))) {
		spin_lock_bh(&ar->data_lock);
		if (arvif->u.ap.noa_data)
			if (!pskb_expand_head(skb, 0, arvif->u.ap.noa_len,
					      GFP_ATOMIC))
				memcpy(skb_put(skb, arvif->u.ap.noa_len),
				       arvif->u.ap.noa_data,
				       arvif->u.ap.noa_len);
		spin_unlock_bh(&ar->data_lock);
	}
}

3281 3282 3283 3284 3285 3286 3287 3288 3289 3290 3291 3292
static bool ath10k_mac_need_offchan_tx_work(struct ath10k *ar)
{
	/* FIXME: Not really sure since when the behaviour changed. At some
	 * point new firmware stopped requiring creation of peer entries for
	 * offchannel tx (and actually creating them causes issues with wmi-htc
	 * tx credit replenishment and reliability). Assuming it's at least 3.4
	 * because that's when the `freq` was introduced to TX_FRM HTT command.
	 */
	return !(ar->htt.target_version_major >= 3 &&
		 ar->htt.target_version_minor >= 4);
}

3293
static int ath10k_mac_tx_wmi_mgmt(struct ath10k *ar, struct sk_buff *skb)
3294
{
3295
	struct sk_buff_head *q = &ar->wmi_mgmt_tx_queue;
3296
	int ret = 0;
3297

3298 3299 3300 3301 3302 3303
	spin_lock_bh(&ar->data_lock);

	if (skb_queue_len(q) == ATH10K_MAX_NUM_MGMT_PENDING) {
		ath10k_warn(ar, "wmi mgmt tx queue is full\n");
		ret = -ENOSPC;
		goto unlock;
3304 3305
	}

3306 3307
	__skb_queue_tail(q, skb);
	ieee80211_queue_work(ar->hw, &ar->wmi_mgmt_tx_work);
3308

3309 3310 3311 3312 3313 3314 3315 3316 3317 3318 3319 3320 3321 3322 3323 3324 3325 3326 3327 3328 3329 3330 3331 3332 3333 3334 3335
unlock:
	spin_unlock_bh(&ar->data_lock);

	return ret;
}

static void ath10k_mac_tx(struct ath10k *ar, struct sk_buff *skb)
{
	struct ath10k_skb_cb *cb = ATH10K_SKB_CB(skb);
	struct ath10k_htt *htt = &ar->htt;
	int ret = 0;

	switch (cb->txmode) {
	case ATH10K_HW_TXRX_RAW:
	case ATH10K_HW_TXRX_NATIVE_WIFI:
	case ATH10K_HW_TXRX_ETHERNET:
		ret = ath10k_htt_tx(htt, skb);
		break;
	case ATH10K_HW_TXRX_MGMT:
		if (test_bit(ATH10K_FW_FEATURE_HAS_WMI_MGMT_TX,
			     ar->fw_features))
			ret = ath10k_mac_tx_wmi_mgmt(ar, skb);
		else if (ar->htt.target_version_major >= 3)
			ret = ath10k_htt_tx(htt, skb);
		else
			ret = ath10k_htt_mgmt_tx(htt, skb);
		break;
3336
	}
3337 3338

	if (ret) {
3339 3340
		ath10k_warn(ar, "failed to transmit packet, dropping: %d\n",
			    ret);
3341 3342 3343 3344 3345 3346 3347 3348 3349 3350 3351 3352 3353 3354 3355 3356 3357 3358 3359 3360 3361 3362 3363 3364 3365 3366
		ieee80211_free_txskb(ar->hw, skb);
	}
}

void ath10k_offchan_tx_purge(struct ath10k *ar)
{
	struct sk_buff *skb;

	for (;;) {
		skb = skb_dequeue(&ar->offchan_tx_queue);
		if (!skb)
			break;

		ieee80211_free_txskb(ar->hw, skb);
	}
}

void ath10k_offchan_tx_work(struct work_struct *work)
{
	struct ath10k *ar = container_of(work, struct ath10k, offchan_tx_work);
	struct ath10k_peer *peer;
	struct ieee80211_hdr *hdr;
	struct sk_buff *skb;
	const u8 *peer_addr;
	int vdev_id;
	int ret;
3367
	unsigned long time_left;
3368
	bool tmp_peer_created = false;
3369 3370 3371 3372 3373 3374 3375 3376 3377 3378 3379 3380 3381 3382 3383

	/* FW requirement: We must create a peer before FW will send out
	 * an offchannel frame. Otherwise the frame will be stuck and
	 * never transmitted. We delete the peer upon tx completion.
	 * It is unlikely that a peer for offchannel tx will already be
	 * present. However it may be in some rare cases so account for that.
	 * Otherwise we might remove a legitimate peer and break stuff. */

	for (;;) {
		skb = skb_dequeue(&ar->offchan_tx_queue);
		if (!skb)
			break;

		mutex_lock(&ar->conf_mutex);

3384
		ath10k_dbg(ar, ATH10K_DBG_MAC, "mac offchannel skb %p\n",
3385 3386 3387 3388
			   skb);

		hdr = (struct ieee80211_hdr *)skb->data;
		peer_addr = ieee80211_get_DA(hdr);
3389
		vdev_id = ATH10K_SKB_CB(skb)->vdev_id;
3390 3391 3392 3393 3394 3395

		spin_lock_bh(&ar->data_lock);
		peer = ath10k_peer_find(ar, vdev_id, peer_addr);
		spin_unlock_bh(&ar->data_lock);

		if (peer)
3396
			/* FIXME: should this use ath10k_warn()? */
3397
			ath10k_dbg(ar, ATH10K_DBG_MAC, "peer %pM on vdev %d already present\n",
3398 3399 3400
				   peer_addr, vdev_id);

		if (!peer) {
3401 3402
			ret = ath10k_peer_create(ar, vdev_id, peer_addr,
						 WMI_PEER_TYPE_DEFAULT);
3403
			if (ret)
3404
				ath10k_warn(ar, "failed to create peer %pM on vdev %d: %d\n",
3405
					    peer_addr, vdev_id, ret);
3406
			tmp_peer_created = (ret == 0);
3407 3408 3409
		}

		spin_lock_bh(&ar->data_lock);
3410
		reinit_completion(&ar->offchan_tx_completed);
3411 3412 3413
		ar->offchan_tx_skb = skb;
		spin_unlock_bh(&ar->data_lock);

3414
		ath10k_mac_tx(ar, skb);
3415

3416 3417 3418
		time_left =
		wait_for_completion_timeout(&ar->offchan_tx_completed, 3 * HZ);
		if (time_left == 0)
3419
			ath10k_warn(ar, "timed out waiting for offchannel skb %p\n",
3420 3421
				    skb);

3422
		if (!peer && tmp_peer_created) {
3423 3424
			ret = ath10k_peer_delete(ar, vdev_id, peer_addr);
			if (ret)
3425
				ath10k_warn(ar, "failed to delete peer %pM on vdev %d: %d\n",
3426 3427 3428 3429 3430 3431 3432
					    peer_addr, vdev_id, ret);
		}

		mutex_unlock(&ar->conf_mutex);
	}
}

3433 3434 3435 3436 3437 3438 3439 3440 3441 3442 3443 3444 3445 3446 3447 3448 3449 3450 3451 3452 3453 3454 3455 3456 3457
void ath10k_mgmt_over_wmi_tx_purge(struct ath10k *ar)
{
	struct sk_buff *skb;

	for (;;) {
		skb = skb_dequeue(&ar->wmi_mgmt_tx_queue);
		if (!skb)
			break;

		ieee80211_free_txskb(ar->hw, skb);
	}
}

void ath10k_mgmt_over_wmi_tx_work(struct work_struct *work)
{
	struct ath10k *ar = container_of(work, struct ath10k, wmi_mgmt_tx_work);
	struct sk_buff *skb;
	int ret;

	for (;;) {
		skb = skb_dequeue(&ar->wmi_mgmt_tx_queue);
		if (!skb)
			break;

		ret = ath10k_wmi_mgmt_tx(ar, skb);
3458
		if (ret) {
3459
			ath10k_warn(ar, "failed to transmit management frame via WMI: %d\n",
3460
				    ret);
3461 3462
			ieee80211_free_txskb(ar->hw, skb);
		}
3463 3464 3465
	}
}

3466 3467 3468 3469
/************/
/* Scanning */
/************/

3470
void __ath10k_scan_finish(struct ath10k *ar)
3471
{
3472
	lockdep_assert_held(&ar->data_lock);
3473

3474 3475 3476 3477
	switch (ar->scan.state) {
	case ATH10K_SCAN_IDLE:
		break;
	case ATH10K_SCAN_RUNNING:
3478 3479
	case ATH10K_SCAN_ABORTING:
		if (!ar->scan.is_roc)
3480 3481 3482
			ieee80211_scan_completed(ar->hw,
						 (ar->scan.state ==
						  ATH10K_SCAN_ABORTING));
3483 3484
		else if (ar->scan.roc_notify)
			ieee80211_remain_on_channel_expired(ar->hw);
3485 3486 3487 3488 3489 3490 3491 3492
		/* fall through */
	case ATH10K_SCAN_STARTING:
		ar->scan.state = ATH10K_SCAN_IDLE;
		ar->scan_channel = NULL;
		ath10k_offchan_tx_purge(ar);
		cancel_delayed_work(&ar->scan.timeout);
		complete_all(&ar->scan.completed);
		break;
3493
	}
3494
}
3495

3496 3497 3498 3499
void ath10k_scan_finish(struct ath10k *ar)
{
	spin_lock_bh(&ar->data_lock);
	__ath10k_scan_finish(ar);
3500 3501 3502
	spin_unlock_bh(&ar->data_lock);
}

3503
static int ath10k_scan_stop(struct ath10k *ar)
3504 3505 3506 3507 3508 3509 3510 3511 3512 3513 3514 3515
{
	struct wmi_stop_scan_arg arg = {
		.req_id = 1, /* FIXME */
		.req_type = WMI_SCAN_STOP_ONE,
		.u.scan_id = ATH10K_SCAN_ID,
	};
	int ret;

	lockdep_assert_held(&ar->conf_mutex);

	ret = ath10k_wmi_stop_scan(ar, &arg);
	if (ret) {
3516
		ath10k_warn(ar, "failed to stop wmi scan: %d\n", ret);
3517
		goto out;
3518 3519 3520
	}

	ret = wait_for_completion_timeout(&ar->scan.completed, 3*HZ);
3521
	if (ret == 0) {
3522
		ath10k_warn(ar, "failed to receive scan abortion completion: timed out\n");
3523 3524 3525 3526
		ret = -ETIMEDOUT;
	} else if (ret > 0) {
		ret = 0;
	}
3527

3528 3529 3530 3531 3532 3533 3534 3535 3536 3537 3538 3539 3540 3541 3542 3543 3544 3545 3546 3547 3548
out:
	/* Scan state should be updated upon scan completion but in case
	 * firmware fails to deliver the event (for whatever reason) it is
	 * desired to clean up scan state anyway. Firmware may have just
	 * dropped the scan completion event delivery due to transport pipe
	 * being overflown with data and/or it can recover on its own before
	 * next scan request is submitted.
	 */
	spin_lock_bh(&ar->data_lock);
	if (ar->scan.state != ATH10K_SCAN_IDLE)
		__ath10k_scan_finish(ar);
	spin_unlock_bh(&ar->data_lock);

	return ret;
}

static void ath10k_scan_abort(struct ath10k *ar)
{
	int ret;

	lockdep_assert_held(&ar->conf_mutex);
3549 3550

	spin_lock_bh(&ar->data_lock);
3551 3552 3553 3554 3555 3556 3557 3558 3559

	switch (ar->scan.state) {
	case ATH10K_SCAN_IDLE:
		/* This can happen if timeout worker kicked in and called
		 * abortion while scan completion was being processed.
		 */
		break;
	case ATH10K_SCAN_STARTING:
	case ATH10K_SCAN_ABORTING:
3560
		ath10k_warn(ar, "refusing scan abortion due to invalid scan state: %s (%d)\n",
3561 3562 3563 3564 3565 3566 3567 3568 3569
			    ath10k_scan_state_str(ar->scan.state),
			    ar->scan.state);
		break;
	case ATH10K_SCAN_RUNNING:
		ar->scan.state = ATH10K_SCAN_ABORTING;
		spin_unlock_bh(&ar->data_lock);

		ret = ath10k_scan_stop(ar);
		if (ret)
3570
			ath10k_warn(ar, "failed to abort scan: %d\n", ret);
3571 3572 3573

		spin_lock_bh(&ar->data_lock);
		break;
3574
	}
3575

3576
	spin_unlock_bh(&ar->data_lock);
3577
}
3578

3579 3580 3581 3582 3583 3584 3585 3586
void ath10k_scan_timeout_work(struct work_struct *work)
{
	struct ath10k *ar = container_of(work, struct ath10k,
					 scan.timeout.work);

	mutex_lock(&ar->conf_mutex);
	ath10k_scan_abort(ar);
	mutex_unlock(&ar->conf_mutex);
3587 3588 3589 3590 3591 3592 3593 3594 3595 3596 3597 3598 3599 3600 3601
}

static int ath10k_start_scan(struct ath10k *ar,
			     const struct wmi_start_scan_arg *arg)
{
	int ret;

	lockdep_assert_held(&ar->conf_mutex);

	ret = ath10k_wmi_start_scan(ar, arg);
	if (ret)
		return ret;

	ret = wait_for_completion_timeout(&ar->scan.started, 1*HZ);
	if (ret == 0) {
3602 3603
		ret = ath10k_scan_stop(ar);
		if (ret)
3604
			ath10k_warn(ar, "failed to stop scan: %d\n", ret);
3605 3606

		return -ETIMEDOUT;
3607 3608
	}

3609 3610 3611 3612 3613 3614 3615 3616 3617 3618 3619
	/* If we failed to start the scan, return error code at
	 * this point.  This is probably due to some issue in the
	 * firmware, but no need to wedge the driver due to that...
	 */
	spin_lock_bh(&ar->data_lock);
	if (ar->scan.state == ATH10K_SCAN_IDLE) {
		spin_unlock_bh(&ar->data_lock);
		return -EINVAL;
	}
	spin_unlock_bh(&ar->data_lock);

3620 3621 3622
	/* Add a 200ms margin to account for event/command processing */
	ieee80211_queue_delayed_work(ar->hw, &ar->scan.timeout,
				     msecs_to_jiffies(arg->max_scan_time+200));
3623 3624 3625 3626 3627 3628 3629 3630 3631 3632 3633
	return 0;
}

/**********************/
/* mac80211 callbacks */
/**********************/

static void ath10k_tx(struct ieee80211_hw *hw,
		      struct ieee80211_tx_control *control,
		      struct sk_buff *skb)
{
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3634
	struct ath10k *ar = hw->priv;
3635
	struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
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3636
	struct ieee80211_vif *vif = info->control.vif;
3637
	struct ieee80211_sta *sta = control->sta;
3638
	struct ieee80211_hdr *hdr = (struct ieee80211_hdr *)skb->data;
3639
	__le16 fc = hdr->frame_control;
3640 3641 3642

	/* We should disable CCK RATE due to P2P */
	if (info->flags & IEEE80211_TX_CTL_NO_CCK_RATE)
3643
		ath10k_dbg(ar, ATH10K_DBG_MAC, "IEEE80211_TX_CTL_NO_CCK_RATE\n");
3644

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3645
	ATH10K_SKB_CB(skb)->htt.is_offchan = false;
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3646
	ATH10K_SKB_CB(skb)->htt.freq = 0;
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3647
	ATH10K_SKB_CB(skb)->htt.tid = ath10k_tx_h_get_tid(hdr);
3648
	ATH10K_SKB_CB(skb)->htt.nohwcrypt = !ath10k_tx_h_use_hwcrypto(vif, skb);
3649
	ATH10K_SKB_CB(skb)->vdev_id = ath10k_tx_h_get_vdev_id(ar, vif);
3650
	ATH10K_SKB_CB(skb)->txmode = ath10k_tx_h_get_txmode(ar, vif, sta, skb);
3651
	ATH10K_SKB_CB(skb)->is_protected = ieee80211_has_protected(fc);
3652

3653 3654 3655
	switch (ATH10K_SKB_CB(skb)->txmode) {
	case ATH10K_HW_TXRX_MGMT:
	case ATH10K_HW_TXRX_NATIVE_WIFI:
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3656 3657 3658
		ath10k_tx_h_nwifi(hw, skb);
		ath10k_tx_h_add_p2p_noa_ie(ar, vif, skb);
		ath10k_tx_h_seq_no(vif, skb);
3659 3660 3661 3662 3663
		break;
	case ATH10K_HW_TXRX_ETHERNET:
		ath10k_tx_h_8023(skb);
		break;
	case ATH10K_HW_TXRX_RAW:
3664 3665 3666 3667 3668
		if (!test_bit(ATH10K_FLAG_RAW_MODE, &ar->dev_flags)) {
			WARN_ON_ONCE(1);
			ieee80211_free_txskb(hw, skb);
			return;
		}
3669
	}
3670 3671 3672

	if (info->flags & IEEE80211_TX_CTL_TX_OFFCHAN) {
		spin_lock_bh(&ar->data_lock);
3673
		ATH10K_SKB_CB(skb)->htt.freq = ar->scan.roc_freq;
3674
		ATH10K_SKB_CB(skb)->vdev_id = ar->scan.vdev_id;
3675 3676
		spin_unlock_bh(&ar->data_lock);

3677 3678 3679
		if (ath10k_mac_need_offchan_tx_work(ar)) {
			ATH10K_SKB_CB(skb)->htt.freq = 0;
			ATH10K_SKB_CB(skb)->htt.is_offchan = true;
3680

3681 3682 3683 3684 3685 3686 3687
			ath10k_dbg(ar, ATH10K_DBG_MAC, "queued offchannel skb %p\n",
				   skb);

			skb_queue_tail(&ar->offchan_tx_queue, skb);
			ieee80211_queue_work(hw, &ar->offchan_tx_work);
			return;
		}
3688 3689
	}

3690
	ath10k_mac_tx(ar, skb);
3691 3692
}

3693
/* Must not be called with conf_mutex held as workers can use that also. */
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3694
void ath10k_drain_tx(struct ath10k *ar)
3695 3696 3697 3698 3699 3700 3701 3702 3703 3704 3705
{
	/* make sure rcu-protected mac80211 tx path itself is drained */
	synchronize_net();

	ath10k_offchan_tx_purge(ar);
	ath10k_mgmt_over_wmi_tx_purge(ar);

	cancel_work_sync(&ar->offchan_tx_work);
	cancel_work_sync(&ar->wmi_mgmt_tx_work);
}

3706
void ath10k_halt(struct ath10k *ar)
3707
{
3708 3709
	struct ath10k_vif *arvif;

3710 3711
	lockdep_assert_held(&ar->conf_mutex);

3712 3713 3714
	clear_bit(ATH10K_CAC_RUNNING, &ar->dev_flags);
	ar->filter_flags = 0;
	ar->monitor = false;
3715
	ar->monitor_arvif = NULL;
3716 3717

	if (ar->monitor_started)
3718
		ath10k_monitor_stop(ar);
3719 3720

	ar->monitor_started = false;
3721
	ar->tx_paused = 0;
3722

3723
	ath10k_scan_finish(ar);
3724 3725 3726 3727 3728
	ath10k_peer_cleanup_all(ar);
	ath10k_core_stop(ar);
	ath10k_hif_power_down(ar);

	spin_lock_bh(&ar->data_lock);
3729 3730
	list_for_each_entry(arvif, &ar->arvifs, list)
		ath10k_mac_vif_beacon_cleanup(arvif);
3731 3732 3733
	spin_unlock_bh(&ar->data_lock);
}

3734 3735 3736 3737 3738 3739 3740 3741 3742 3743 3744 3745 3746 3747 3748 3749 3750 3751 3752
static int ath10k_get_antenna(struct ieee80211_hw *hw, u32 *tx_ant, u32 *rx_ant)
{
	struct ath10k *ar = hw->priv;

	mutex_lock(&ar->conf_mutex);

	if (ar->cfg_tx_chainmask) {
		*tx_ant = ar->cfg_tx_chainmask;
		*rx_ant = ar->cfg_rx_chainmask;
	} else {
		*tx_ant = ar->supp_tx_chainmask;
		*rx_ant = ar->supp_rx_chainmask;
	}

	mutex_unlock(&ar->conf_mutex);

	return 0;
}

3753 3754 3755 3756 3757 3758 3759 3760 3761 3762 3763 3764 3765
static void ath10k_check_chain_mask(struct ath10k *ar, u32 cm, const char *dbg)
{
	/* It is not clear that allowing gaps in chainmask
	 * is helpful.  Probably it will not do what user
	 * is hoping for, so warn in that case.
	 */
	if (cm == 15 || cm == 7 || cm == 3 || cm == 1 || cm == 0)
		return;

	ath10k_warn(ar, "mac %s antenna chainmask may be invalid: 0x%x.  Suggested values: 15, 7, 3, 1 or 0.\n",
		    dbg, cm);
}

3766 3767 3768 3769 3770 3771
static int __ath10k_set_antenna(struct ath10k *ar, u32 tx_ant, u32 rx_ant)
{
	int ret;

	lockdep_assert_held(&ar->conf_mutex);

3772 3773 3774
	ath10k_check_chain_mask(ar, tx_ant, "tx");
	ath10k_check_chain_mask(ar, rx_ant, "rx");

3775 3776 3777 3778 3779 3780 3781 3782 3783 3784
	ar->cfg_tx_chainmask = tx_ant;
	ar->cfg_rx_chainmask = rx_ant;

	if ((ar->state != ATH10K_STATE_ON) &&
	    (ar->state != ATH10K_STATE_RESTARTED))
		return 0;

	ret = ath10k_wmi_pdev_set_param(ar, ar->wmi.pdev_param->tx_chain_mask,
					tx_ant);
	if (ret) {
3785
		ath10k_warn(ar, "failed to set tx-chainmask: %d, req 0x%x\n",
3786 3787 3788 3789 3790 3791 3792
			    ret, tx_ant);
		return ret;
	}

	ret = ath10k_wmi_pdev_set_param(ar, ar->wmi.pdev_param->rx_chain_mask,
					rx_ant);
	if (ret) {
3793
		ath10k_warn(ar, "failed to set rx-chainmask: %d, req 0x%x\n",
3794 3795 3796 3797 3798 3799 3800 3801 3802 3803 3804 3805 3806 3807 3808 3809 3810 3811
			    ret, rx_ant);
		return ret;
	}

	return 0;
}

static int ath10k_set_antenna(struct ieee80211_hw *hw, u32 tx_ant, u32 rx_ant)
{
	struct ath10k *ar = hw->priv;
	int ret;

	mutex_lock(&ar->conf_mutex);
	ret = __ath10k_set_antenna(ar, tx_ant, rx_ant);
	mutex_unlock(&ar->conf_mutex);
	return ret;
}

3812 3813 3814
static int ath10k_start(struct ieee80211_hw *hw)
{
	struct ath10k *ar = hw->priv;
3815
	u32 burst_enable;
3816
	int ret = 0;
3817

3818 3819 3820 3821 3822 3823 3824
	/*
	 * This makes sense only when restarting hw. It is harmless to call
	 * uncoditionally. This is necessary to make sure no HTT/WMI tx
	 * commands will be submitted while restarting.
	 */
	ath10k_drain_tx(ar);

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3825 3826
	mutex_lock(&ar->conf_mutex);

3827 3828 3829 3830 3831 3832 3833 3834 3835 3836 3837 3838
	switch (ar->state) {
	case ATH10K_STATE_OFF:
		ar->state = ATH10K_STATE_ON;
		break;
	case ATH10K_STATE_RESTARTING:
		ath10k_halt(ar);
		ar->state = ATH10K_STATE_RESTARTED;
		break;
	case ATH10K_STATE_ON:
	case ATH10K_STATE_RESTARTED:
	case ATH10K_STATE_WEDGED:
		WARN_ON(1);
3839
		ret = -EINVAL;
3840
		goto err;
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3841 3842 3843
	case ATH10K_STATE_UTF:
		ret = -EBUSY;
		goto err;
3844 3845 3846 3847
	}

	ret = ath10k_hif_power_up(ar);
	if (ret) {
3848
		ath10k_err(ar, "Could not init hif: %d\n", ret);
3849
		goto err_off;
3850 3851
	}

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3852
	ret = ath10k_core_start(ar, ATH10K_FIRMWARE_MODE_NORMAL);
3853
	if (ret) {
3854
		ath10k_err(ar, "Could not init core: %d\n", ret);
3855
		goto err_power_down;
3856 3857
	}

3858
	ret = ath10k_wmi_pdev_set_param(ar, ar->wmi.pdev_param->pmf_qos, 1);
3859
	if (ret) {
3860
		ath10k_warn(ar, "failed to enable PMF QOS: %d\n", ret);
3861 3862
		goto err_core_stop;
	}
3863

3864
	ret = ath10k_wmi_pdev_set_param(ar, ar->wmi.pdev_param->dynamic_bw, 1);
3865
	if (ret) {
3866
		ath10k_warn(ar, "failed to enable dynamic BW: %d\n", ret);
3867 3868
		goto err_core_stop;
	}
3869

3870 3871 3872 3873 3874 3875 3876 3877 3878
	if (test_bit(WMI_SERVICE_ADAPTIVE_OCS, ar->wmi.svc_map)) {
		ret = ath10k_wmi_adaptive_qcs(ar, true);
		if (ret) {
			ath10k_warn(ar, "failed to enable adaptive qcs: %d\n",
				    ret);
			goto err_core_stop;
		}
	}

3879 3880 3881 3882 3883 3884 3885 3886 3887
	if (test_bit(WMI_SERVICE_BURST, ar->wmi.svc_map)) {
		burst_enable = ar->wmi.pdev_param->burst_enable;
		ret = ath10k_wmi_pdev_set_param(ar, burst_enable, 0);
		if (ret) {
			ath10k_warn(ar, "failed to disable burst: %d\n", ret);
			goto err_core_stop;
		}
	}

3888 3889 3890 3891
	if (ar->cfg_tx_chainmask)
		__ath10k_set_antenna(ar, ar->cfg_tx_chainmask,
				     ar->cfg_rx_chainmask);

3892 3893 3894 3895 3896 3897 3898 3899 3900 3901 3902 3903
	/*
	 * By default FW set ARP frames ac to voice (6). In that case ARP
	 * exchange is not working properly for UAPSD enabled AP. ARP requests
	 * which arrives with access category 0 are processed by network stack
	 * and send back with access category 0, but FW changes access category
	 * to 6. Set ARP frames access category to best effort (0) solves
	 * this problem.
	 */

	ret = ath10k_wmi_pdev_set_param(ar,
					ar->wmi.pdev_param->arp_ac_override, 0);
	if (ret) {
3904
		ath10k_warn(ar, "failed to set arp ac override parameter: %d\n",
3905
			    ret);
3906
		goto err_core_stop;
3907 3908
	}

3909 3910 3911 3912 3913 3914 3915 3916
	ret = ath10k_wmi_pdev_set_param(ar,
					ar->wmi.pdev_param->ani_enable, 1);
	if (ret) {
		ath10k_warn(ar, "failed to enable ani by default: %d\n",
			    ret);
		goto err_core_stop;
	}

3917 3918
	ar->ani_enabled = true;

3919
	ar->num_started_vdevs = 0;
3920 3921
	ath10k_regd_update(ar);

3922
	ath10k_spectral_start(ar);
3923
	ath10k_thermal_set_throttling(ar);
3924

3925 3926 3927 3928 3929 3930 3931 3932 3933 3934 3935 3936 3937
	mutex_unlock(&ar->conf_mutex);
	return 0;

err_core_stop:
	ath10k_core_stop(ar);

err_power_down:
	ath10k_hif_power_down(ar);

err_off:
	ar->state = ATH10K_STATE_OFF;

err:
Michal Kazior's avatar
Michal Kazior committed
3938
	mutex_unlock(&ar->conf_mutex);
3939
	return ret;
3940 3941 3942 3943 3944 3945
}

static void ath10k_stop(struct ieee80211_hw *hw)
{
	struct ath10k *ar = hw->priv;

3946 3947
	ath10k_drain_tx(ar);

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3948
	mutex_lock(&ar->conf_mutex);
3949
	if (ar->state != ATH10K_STATE_OFF) {
3950
		ath10k_halt(ar);
3951 3952
		ar->state = ATH10K_STATE_OFF;
	}
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Michal Kazior committed
3953 3954
	mutex_unlock(&ar->conf_mutex);

3955
	cancel_delayed_work_sync(&ar->scan.timeout);
3956
	cancel_work_sync(&ar->restart_work);
3957 3958
}

3959
static int ath10k_config_ps(struct ath10k *ar)
3960
{
3961 3962
	struct ath10k_vif *arvif;
	int ret = 0;
3963 3964 3965

	lockdep_assert_held(&ar->conf_mutex);

3966 3967 3968
	list_for_each_entry(arvif, &ar->arvifs, list) {
		ret = ath10k_mac_vif_setup_ps(arvif);
		if (ret) {
3969
			ath10k_warn(ar, "failed to setup powersave: %d\n", ret);
3970 3971 3972
			break;
		}
	}
3973

3974
	return ret;
3975 3976
}

3977 3978 3979 3980 3981 3982 3983 3984 3985 3986 3987 3988 3989 3990 3991 3992 3993 3994 3995 3996 3997 3998 3999 4000 4001 4002 4003 4004 4005 4006 4007 4008 4009 4010 4011 4012 4013 4014 4015 4016 4017 4018 4019 4020 4021 4022 4023 4024 4025 4026 4027 4028 4029 4030 4031 4032 4033
static int ath10k_mac_txpower_setup(struct ath10k *ar, int txpower)
{
	int ret;
	u32 param;

	lockdep_assert_held(&ar->conf_mutex);

	ath10k_dbg(ar, ATH10K_DBG_MAC, "mac txpower %d\n", txpower);

	param = ar->wmi.pdev_param->txpower_limit2g;
	ret = ath10k_wmi_pdev_set_param(ar, param, txpower * 2);
	if (ret) {
		ath10k_warn(ar, "failed to set 2g txpower %d: %d\n",
			    txpower, ret);
		return ret;
	}

	param = ar->wmi.pdev_param->txpower_limit5g;
	ret = ath10k_wmi_pdev_set_param(ar, param, txpower * 2);
	if (ret) {
		ath10k_warn(ar, "failed to set 5g txpower %d: %d\n",
			    txpower, ret);
		return ret;
	}

	return 0;
}

static int ath10k_mac_txpower_recalc(struct ath10k *ar)
{
	struct ath10k_vif *arvif;
	int ret, txpower = -1;

	lockdep_assert_held(&ar->conf_mutex);

	list_for_each_entry(arvif, &ar->arvifs, list) {
		WARN_ON(arvif->txpower < 0);

		if (txpower == -1)
			txpower = arvif->txpower;
		else
			txpower = min(txpower, arvif->txpower);
	}

	if (WARN_ON(txpower == -1))
		return -EINVAL;

	ret = ath10k_mac_txpower_setup(ar, txpower);
	if (ret) {
		ath10k_warn(ar, "failed to setup tx power %d: %d\n",
			    txpower, ret);
		return ret;
	}

	return 0;
}

4034 4035
static int ath10k_config(struct ieee80211_hw *hw, u32 changed)
{
4036 4037 4038 4039 4040 4041
	struct ath10k *ar = hw->priv;
	struct ieee80211_conf *conf = &hw->conf;
	int ret = 0;

	mutex_lock(&ar->conf_mutex);

4042 4043
	if (changed & IEEE80211_CONF_CHANGE_PS)
		ath10k_config_ps(ar);
4044 4045

	if (changed & IEEE80211_CONF_CHANGE_MONITOR) {
4046 4047 4048 4049
		ar->monitor = conf->flags & IEEE80211_CONF_MONITOR;
		ret = ath10k_monitor_recalc(ar);
		if (ret)
			ath10k_warn(ar, "failed to recalc monitor: %d\n", ret);
4050 4051 4052 4053 4054 4055
	}

	mutex_unlock(&ar->conf_mutex);
	return ret;
}

4056 4057 4058 4059 4060 4061 4062 4063 4064 4065 4066
static u32 get_nss_from_chainmask(u16 chain_mask)
{
	if ((chain_mask & 0x15) == 0x15)
		return 4;
	else if ((chain_mask & 0x7) == 0x7)
		return 3;
	else if ((chain_mask & 0x3) == 0x3)
		return 2;
	return 1;
}

4067 4068 4069 4070 4071 4072 4073 4074 4075 4076 4077 4078 4079 4080 4081 4082 4083 4084 4085 4086 4087 4088 4089 4090 4091 4092 4093 4094 4095 4096 4097 4098 4099 4100 4101 4102 4103
static int ath10k_mac_set_txbf_conf(struct ath10k_vif *arvif)
{
	u32 value = 0;
	struct ath10k *ar = arvif->ar;

	if (ath10k_wmi_get_txbf_conf_scheme(ar) != WMI_TXBF_CONF_BEFORE_ASSOC)
		return 0;

	if (ar->vht_cap_info & (IEEE80211_VHT_CAP_SU_BEAMFORMEE_CAPABLE |
				IEEE80211_VHT_CAP_MU_BEAMFORMEE_CAPABLE))
		value |= SM((ar->num_rf_chains - 1), WMI_TXBF_STS_CAP_OFFSET);

	if (ar->vht_cap_info & (IEEE80211_VHT_CAP_SU_BEAMFORMER_CAPABLE |
				IEEE80211_VHT_CAP_MU_BEAMFORMER_CAPABLE))
		value |= SM((ar->num_rf_chains - 1), WMI_BF_SOUND_DIM_OFFSET);

	if (!value)
		return 0;

	if (ar->vht_cap_info & IEEE80211_VHT_CAP_SU_BEAMFORMER_CAPABLE)
		value |= WMI_VDEV_PARAM_TXBF_SU_TX_BFER;

	if (ar->vht_cap_info & IEEE80211_VHT_CAP_MU_BEAMFORMER_CAPABLE)
		value |= (WMI_VDEV_PARAM_TXBF_MU_TX_BFER |
			  WMI_VDEV_PARAM_TXBF_SU_TX_BFER);

	if (ar->vht_cap_info & IEEE80211_VHT_CAP_SU_BEAMFORMEE_CAPABLE)
		value |= WMI_VDEV_PARAM_TXBF_SU_TX_BFEE;

	if (ar->vht_cap_info & IEEE80211_VHT_CAP_MU_BEAMFORMEE_CAPABLE)
		value |= (WMI_VDEV_PARAM_TXBF_MU_TX_BFEE |
			  WMI_VDEV_PARAM_TXBF_SU_TX_BFEE);

	return ath10k_wmi_vdev_set_param(ar, arvif->vdev_id,
					 ar->wmi.vdev_param->txbf, value);
}

4104 4105 4106 4107 4108 4109 4110 4111 4112 4113 4114 4115 4116 4117
/*
 * TODO:
 * Figure out how to handle WMI_VDEV_SUBTYPE_P2P_DEVICE,
 * because we will send mgmt frames without CCK. This requirement
 * for P2P_FIND/GO_NEG should be handled by checking CCK flag
 * in the TX packet.
 */
static int ath10k_add_interface(struct ieee80211_hw *hw,
				struct ieee80211_vif *vif)
{
	struct ath10k *ar = hw->priv;
	struct ath10k_vif *arvif = ath10k_vif_to_arvif(vif);
	enum wmi_sta_powersave_param param;
	int ret = 0;
4118
	u32 value;
4119
	int bit;
4120
	int i;
4121
	u32 vdev_param;
4122

4123 4124
	vif->driver_flags |= IEEE80211_VIF_SUPPORTS_UAPSD;

4125 4126
	mutex_lock(&ar->conf_mutex);

4127 4128
	memset(arvif, 0, sizeof(*arvif));

4129 4130 4131
	arvif->ar = ar;
	arvif->vif = vif;

4132
	INIT_LIST_HEAD(&arvif->list);
4133
	INIT_WORK(&arvif->ap_csa_work, ath10k_mac_vif_ap_csa_work);
4134 4135
	INIT_DELAYED_WORK(&arvif->connection_loss_work,
			  ath10k_mac_vif_sta_connection_loss_work);
4136

4137 4138 4139 4140 4141 4142 4143
	for (i = 0; i < ARRAY_SIZE(arvif->bitrate_mask.control); i++) {
		arvif->bitrate_mask.control[i].legacy = 0xffffffff;
		memset(arvif->bitrate_mask.control[i].ht_mcs, 0xff,
		       sizeof(arvif->bitrate_mask.control[i].ht_mcs));
		memset(arvif->bitrate_mask.control[i].vht_mcs, 0xff,
		       sizeof(arvif->bitrate_mask.control[i].vht_mcs));
	}
4144

4145 4146
	if (ar->num_peers >= ar->max_num_peers) {
		ath10k_warn(ar, "refusing vdev creation due to insufficient peer entry resources in firmware\n");
4147 4148
		ret = -ENOBUFS;
		goto err;
4149 4150
	}

4151
	if (ar->free_vdev_map == 0) {
4152
		ath10k_warn(ar, "Free vdev map is empty, no more interfaces allowed.\n");
4153
		ret = -EBUSY;
4154
		goto err;
4155
	}
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4156
	bit = __ffs64(ar->free_vdev_map);
4157

Ben Greear's avatar
Ben Greear committed
4158 4159
	ath10k_dbg(ar, ATH10K_DBG_MAC, "mac create vdev %i map %llx\n",
		   bit, ar->free_vdev_map);
4160

Ben Greear's avatar
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4161
	arvif->vdev_id = bit;
4162 4163 4164
	arvif->vdev_subtype = WMI_VDEV_SUBTYPE_NONE;

	switch (vif->type) {
4165 4166 4167 4168
	case NL80211_IFTYPE_P2P_DEVICE:
		arvif->vdev_type = WMI_VDEV_TYPE_STA;
		arvif->vdev_subtype = WMI_VDEV_SUBTYPE_P2P_DEVICE;
		break;
4169 4170 4171 4172 4173 4174 4175 4176 4177 4178 4179 4180 4181 4182 4183 4184 4185 4186 4187 4188 4189 4190 4191
	case NL80211_IFTYPE_UNSPECIFIED:
	case NL80211_IFTYPE_STATION:
		arvif->vdev_type = WMI_VDEV_TYPE_STA;
		if (vif->p2p)
			arvif->vdev_subtype = WMI_VDEV_SUBTYPE_P2P_CLIENT;
		break;
	case NL80211_IFTYPE_ADHOC:
		arvif->vdev_type = WMI_VDEV_TYPE_IBSS;
		break;
	case NL80211_IFTYPE_AP:
		arvif->vdev_type = WMI_VDEV_TYPE_AP;

		if (vif->p2p)
			arvif->vdev_subtype = WMI_VDEV_SUBTYPE_P2P_GO;
		break;
	case NL80211_IFTYPE_MONITOR:
		arvif->vdev_type = WMI_VDEV_TYPE_MONITOR;
		break;
	default:
		WARN_ON(1);
		break;
	}

4192 4193 4194 4195 4196 4197 4198 4199 4200
	/* Using vdev_id as queue number will make it very easy to do per-vif
	 * tx queue locking. This shouldn't wrap due to interface combinations
	 * but do a modulo for correctness sake and prevent using offchannel tx
	 * queues for regular vif tx.
	 */
	vif->cab_queue = arvif->vdev_id % (IEEE80211_MAX_QUEUES - 1);
	for (i = 0; i < ARRAY_SIZE(vif->hw_queue); i++)
		vif->hw_queue[i] = arvif->vdev_id % (IEEE80211_MAX_QUEUES - 1);

4201 4202 4203 4204 4205 4206 4207 4208 4209 4210 4211 4212 4213 4214 4215 4216 4217 4218 4219 4220 4221
	/* Some firmware revisions don't wait for beacon tx completion before
	 * sending another SWBA event. This could lead to hardware using old
	 * (freed) beacon data in some cases, e.g. tx credit starvation
	 * combined with missed TBTT. This is very very rare.
	 *
	 * On non-IOMMU-enabled hosts this could be a possible security issue
	 * because hw could beacon some random data on the air.  On
	 * IOMMU-enabled hosts DMAR faults would occur in most cases and target
	 * device would crash.
	 *
	 * Since there are no beacon tx completions (implicit nor explicit)
	 * propagated to host the only workaround for this is to allocate a
	 * DMA-coherent buffer for a lifetime of a vif and use it for all
	 * beacon tx commands. Worst case for this approach is some beacons may
	 * become corrupted, e.g. have garbled IEs or out-of-date TIM bitmap.
	 */
	if (vif->type == NL80211_IFTYPE_ADHOC ||
	    vif->type == NL80211_IFTYPE_AP) {
		arvif->beacon_buf = dma_zalloc_coherent(ar->dev,
							IEEE80211_MAX_FRAME_LEN,
							&arvif->beacon_paddr,
4222
							GFP_ATOMIC);
4223 4224 4225 4226 4227 4228 4229
		if (!arvif->beacon_buf) {
			ret = -ENOMEM;
			ath10k_warn(ar, "failed to allocate beacon buffer: %d\n",
				    ret);
			goto err;
		}
	}
4230 4231 4232 4233 4234 4235 4236 4237
	if (test_bit(ATH10K_FLAG_HW_CRYPTO_DISABLED, &ar->dev_flags))
		arvif->nohwcrypt = true;

	if (arvif->nohwcrypt &&
	    !test_bit(ATH10K_FLAG_RAW_MODE, &ar->dev_flags)) {
		ath10k_warn(ar, "cryptmode module param needed for sw crypto\n");
		goto err;
	}
4238 4239 4240 4241

	ath10k_dbg(ar, ATH10K_DBG_MAC, "mac vdev create %d (add interface) type %d subtype %d bcnmode %s\n",
		   arvif->vdev_id, arvif->vdev_type, arvif->vdev_subtype,
		   arvif->beacon_buf ? "single-buf" : "per-skb");
4242 4243 4244 4245

	ret = ath10k_wmi_vdev_create(ar, arvif->vdev_id, arvif->vdev_type,
				     arvif->vdev_subtype, vif->addr);
	if (ret) {
4246
		ath10k_warn(ar, "failed to create WMI vdev %i: %d\n",
4247
			    arvif->vdev_id, ret);
4248
		goto err;
4249 4250
	}

Ben Greear's avatar
Ben Greear committed
4251
	ar->free_vdev_map &= ~(1LL << arvif->vdev_id);
4252
	list_add(&arvif->list, &ar->arvifs);
4253

4254 4255 4256 4257
	/* It makes no sense to have firmware do keepalives. mac80211 already
	 * takes care of this with idle connection polling.
	 */
	ret = ath10k_mac_vif_disable_keepalive(arvif);
4258
	if (ret) {
4259
		ath10k_warn(ar, "failed to disable keepalive on vdev %i: %d\n",
4260
			    arvif->vdev_id, ret);
4261 4262
		goto err_vdev_delete;
	}
4263

4264
	arvif->def_wep_key_idx = -1;
4265

4266 4267
	vdev_param = ar->wmi.vdev_param->tx_encap_type;
	ret = ath10k_wmi_vdev_set_param(ar, arvif->vdev_id, vdev_param,
4268
					ATH10K_HW_TXRX_NATIVE_WIFI);
4269
	/* 10.X firmware does not support this VDEV parameter. Do not warn */
4270
	if (ret && ret != -EOPNOTSUPP) {
4271
		ath10k_warn(ar, "failed to set vdev %i TX encapsulation: %d\n",
4272
			    arvif->vdev_id, ret);
4273 4274
		goto err_vdev_delete;
	}
4275

4276 4277 4278 4279 4280 4281 4282 4283 4284 4285 4286 4287 4288 4289
	if (ar->cfg_tx_chainmask) {
		u16 nss = get_nss_from_chainmask(ar->cfg_tx_chainmask);

		vdev_param = ar->wmi.vdev_param->nss;
		ret = ath10k_wmi_vdev_set_param(ar, arvif->vdev_id, vdev_param,
						nss);
		if (ret) {
			ath10k_warn(ar, "failed to set vdev %i chainmask 0x%x, nss %i: %d\n",
				    arvif->vdev_id, ar->cfg_tx_chainmask, nss,
				    ret);
			goto err_vdev_delete;
		}
	}

4290 4291
	if (arvif->vdev_type == WMI_VDEV_TYPE_AP ||
	    arvif->vdev_type == WMI_VDEV_TYPE_IBSS) {
4292 4293
		ret = ath10k_peer_create(ar, arvif->vdev_id, vif->addr,
					 WMI_PEER_TYPE_DEFAULT);
4294
		if (ret) {
4295
			ath10k_warn(ar, "failed to create vdev %i peer for AP/IBSS: %d\n",
4296
				    arvif->vdev_id, ret);
4297
			goto err_vdev_delete;
4298
		}
4299
	}
4300

4301
	if (arvif->vdev_type == WMI_VDEV_TYPE_AP) {
4302 4303
		ret = ath10k_mac_set_kickout(arvif);
		if (ret) {
4304
			ath10k_warn(ar, "failed to set vdev %i kickout parameters: %d\n",
4305
				    arvif->vdev_id, ret);
4306 4307
			goto err_peer_delete;
		}
4308 4309 4310 4311 4312 4313 4314
	}

	if (arvif->vdev_type == WMI_VDEV_TYPE_STA) {
		param = WMI_STA_PS_PARAM_RX_WAKE_POLICY;
		value = WMI_STA_PS_RX_WAKE_POLICY_WAKE;
		ret = ath10k_wmi_set_sta_ps_param(ar, arvif->vdev_id,
						  param, value);
4315
		if (ret) {
4316
			ath10k_warn(ar, "failed to set vdev %i RX wake policy: %d\n",
4317
				    arvif->vdev_id, ret);
4318 4319
			goto err_peer_delete;
		}
4320

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4321
		ret = ath10k_mac_vif_recalc_ps_wake_threshold(arvif);
4322
		if (ret) {
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4323
			ath10k_warn(ar, "failed to recalc ps wake threshold on vdev %i: %d\n",
4324
				    arvif->vdev_id, ret);
4325 4326
			goto err_peer_delete;
		}
4327

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Michal Kazior committed
4328
		ret = ath10k_mac_vif_recalc_ps_poll_count(arvif);
4329
		if (ret) {
Michal Kazior's avatar
Michal Kazior committed
4330
			ath10k_warn(ar, "failed to recalc ps poll count on vdev %i: %d\n",
4331
				    arvif->vdev_id, ret);
4332 4333
			goto err_peer_delete;
		}
4334 4335
	}

4336 4337 4338 4339 4340 4341 4342
	ret = ath10k_mac_set_txbf_conf(arvif);
	if (ret) {
		ath10k_warn(ar, "failed to set txbf for vdev %d: %d\n",
			    arvif->vdev_id, ret);
		goto err_peer_delete;
	}

4343
	ret = ath10k_mac_set_rts(arvif, ar->hw->wiphy->rts_threshold);
4344
	if (ret) {
4345
		ath10k_warn(ar, "failed to set rts threshold for vdev %d: %d\n",
4346
			    arvif->vdev_id, ret);
4347 4348
		goto err_peer_delete;
	}
4349

4350 4351 4352 4353 4354 4355 4356
	arvif->txpower = vif->bss_conf.txpower;
	ret = ath10k_mac_txpower_recalc(ar);
	if (ret) {
		ath10k_warn(ar, "failed to recalc tx power: %d\n", ret);
		goto err_peer_delete;
	}

4357 4358 4359 4360 4361 4362 4363 4364 4365
	if (vif->type == NL80211_IFTYPE_MONITOR) {
		ar->monitor_arvif = arvif;
		ret = ath10k_monitor_recalc(ar);
		if (ret) {
			ath10k_warn(ar, "failed to recalc monitor: %d\n", ret);
			goto err_peer_delete;
		}
	}

4366 4367 4368 4369 4370
	spin_lock_bh(&ar->htt.tx_lock);
	if (!ar->tx_paused)
		ieee80211_wake_queue(ar->hw, arvif->vdev_id);
	spin_unlock_bh(&ar->htt.tx_lock);

4371
	mutex_unlock(&ar->conf_mutex);
4372 4373 4374
	return 0;

err_peer_delete:
4375 4376
	if (arvif->vdev_type == WMI_VDEV_TYPE_AP ||
	    arvif->vdev_type == WMI_VDEV_TYPE_IBSS)
4377 4378 4379 4380
		ath10k_wmi_peer_delete(ar, arvif->vdev_id, vif->addr);

err_vdev_delete:
	ath10k_wmi_vdev_delete(ar, arvif->vdev_id);
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Ben Greear committed
4381
	ar->free_vdev_map |= 1LL << arvif->vdev_id;
4382
	list_del(&arvif->list);
4383 4384

err:
4385 4386 4387 4388 4389 4390
	if (arvif->beacon_buf) {
		dma_free_coherent(ar->dev, IEEE80211_MAX_FRAME_LEN,
				  arvif->beacon_buf, arvif->beacon_paddr);
		arvif->beacon_buf = NULL;
	}

4391 4392
	mutex_unlock(&ar->conf_mutex);

4393 4394 4395
	return ret;
}

4396 4397 4398 4399 4400 4401 4402 4403
static void ath10k_mac_vif_tx_unlock_all(struct ath10k_vif *arvif)
{
	int i;

	for (i = 0; i < BITS_PER_LONG; i++)
		ath10k_mac_vif_tx_unlock(arvif, i);
}

4404 4405 4406 4407 4408 4409 4410
static void ath10k_remove_interface(struct ieee80211_hw *hw,
				    struct ieee80211_vif *vif)
{
	struct ath10k *ar = hw->priv;
	struct ath10k_vif *arvif = ath10k_vif_to_arvif(vif);
	int ret;

4411
	cancel_work_sync(&arvif->ap_csa_work);
4412
	cancel_delayed_work_sync(&arvif->connection_loss_work);
4413

4414 4415
	mutex_lock(&ar->conf_mutex);

4416
	spin_lock_bh(&ar->data_lock);
4417
	ath10k_mac_vif_beacon_cleanup(arvif);
4418 4419
	spin_unlock_bh(&ar->data_lock);

4420 4421
	ret = ath10k_spectral_vif_stop(arvif);
	if (ret)
4422
		ath10k_warn(ar, "failed to stop spectral for vdev %i: %d\n",
4423 4424
			    arvif->vdev_id, ret);

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4425
	ar->free_vdev_map |= 1LL << arvif->vdev_id;
4426
	list_del(&arvif->list);
4427

4428 4429
	if (arvif->vdev_type == WMI_VDEV_TYPE_AP ||
	    arvif->vdev_type == WMI_VDEV_TYPE_IBSS) {
4430 4431
		ret = ath10k_wmi_peer_delete(arvif->ar, arvif->vdev_id,
					     vif->addr);
4432
		if (ret)
4433
			ath10k_warn(ar, "failed to submit AP/IBSS self-peer removal on vdev %i: %d\n",
4434
				    arvif->vdev_id, ret);
4435 4436 4437 4438

		kfree(arvif->u.ap.noa_data);
	}

4439
	ath10k_dbg(ar, ATH10K_DBG_MAC, "mac vdev %i delete (remove interface)\n",
4440 4441
		   arvif->vdev_id);

4442 4443
	ret = ath10k_wmi_vdev_delete(ar, arvif->vdev_id);
	if (ret)
4444
		ath10k_warn(ar, "failed to delete WMI vdev %i: %d\n",
4445
			    arvif->vdev_id, ret);
4446

4447 4448 4449
	/* Some firmware revisions don't notify host about self-peer removal
	 * until after associated vdev is deleted.
	 */
4450 4451
	if (arvif->vdev_type == WMI_VDEV_TYPE_AP ||
	    arvif->vdev_type == WMI_VDEV_TYPE_IBSS) {
4452 4453 4454 4455 4456 4457 4458 4459 4460 4461 4462
		ret = ath10k_wait_for_peer_deleted(ar, arvif->vdev_id,
						   vif->addr);
		if (ret)
			ath10k_warn(ar, "failed to remove AP self-peer on vdev %i: %d\n",
				    arvif->vdev_id, ret);

		spin_lock_bh(&ar->data_lock);
		ar->num_peers--;
		spin_unlock_bh(&ar->data_lock);
	}

4463 4464
	ath10k_peer_cleanup(ar, arvif->vdev_id);

4465 4466 4467 4468 4469 4470 4471
	if (vif->type == NL80211_IFTYPE_MONITOR) {
		ar->monitor_arvif = NULL;
		ret = ath10k_monitor_recalc(ar);
		if (ret)
			ath10k_warn(ar, "failed to recalc monitor: %d\n", ret);
	}

4472 4473 4474 4475
	spin_lock_bh(&ar->htt.tx_lock);
	ath10k_mac_vif_tx_unlock_all(arvif);
	spin_unlock_bh(&ar->htt.tx_lock);

4476 4477 4478 4479 4480 4481 4482
	mutex_unlock(&ar->conf_mutex);
}

/*
 * FIXME: Has to be verified.
 */
#define SUPPORTED_FILTERS			\
4483
	(FIF_ALLMULTI |				\
4484 4485 4486 4487 4488 4489 4490 4491 4492 4493 4494 4495 4496 4497 4498 4499 4500 4501 4502 4503 4504
	FIF_CONTROL |				\
	FIF_PSPOLL |				\
	FIF_OTHER_BSS |				\
	FIF_BCN_PRBRESP_PROMISC |		\
	FIF_PROBE_REQ |				\
	FIF_FCSFAIL)

static void ath10k_configure_filter(struct ieee80211_hw *hw,
				    unsigned int changed_flags,
				    unsigned int *total_flags,
				    u64 multicast)
{
	struct ath10k *ar = hw->priv;
	int ret;

	mutex_lock(&ar->conf_mutex);

	changed_flags &= SUPPORTED_FILTERS;
	*total_flags &= SUPPORTED_FILTERS;
	ar->filter_flags = *total_flags;

4505 4506 4507
	ret = ath10k_monitor_recalc(ar);
	if (ret)
		ath10k_warn(ar, "failed to recalc montior: %d\n", ret);
4508 4509 4510 4511 4512 4513 4514 4515 4516 4517 4518 4519

	mutex_unlock(&ar->conf_mutex);
}

static void ath10k_bss_info_changed(struct ieee80211_hw *hw,
				    struct ieee80211_vif *vif,
				    struct ieee80211_bss_conf *info,
				    u32 changed)
{
	struct ath10k *ar = hw->priv;
	struct ath10k_vif *arvif = ath10k_vif_to_arvif(vif);
	int ret = 0;
4520
	u32 vdev_param, pdev_param, slottime, preamble;
4521 4522 4523 4524 4525 4526 4527 4528

	mutex_lock(&ar->conf_mutex);

	if (changed & BSS_CHANGED_IBSS)
		ath10k_control_ibss(arvif, info, vif->addr);

	if (changed & BSS_CHANGED_BEACON_INT) {
		arvif->beacon_interval = info->beacon_int;
4529 4530
		vdev_param = ar->wmi.vdev_param->beacon_interval;
		ret = ath10k_wmi_vdev_set_param(ar, arvif->vdev_id, vdev_param,
4531
						arvif->beacon_interval);
4532
		ath10k_dbg(ar, ATH10K_DBG_MAC,
4533 4534 4535
			   "mac vdev %d beacon_interval %d\n",
			   arvif->vdev_id, arvif->beacon_interval);

4536
		if (ret)
4537
			ath10k_warn(ar, "failed to set beacon interval for vdev %d: %i\n",
4538
				    arvif->vdev_id, ret);
4539 4540 4541
	}

	if (changed & BSS_CHANGED_BEACON) {
4542
		ath10k_dbg(ar, ATH10K_DBG_MAC,
4543 4544 4545
			   "vdev %d set beacon tx mode to staggered\n",
			   arvif->vdev_id);

4546 4547
		pdev_param = ar->wmi.pdev_param->beacon_tx_mode;
		ret = ath10k_wmi_pdev_set_param(ar, pdev_param,
4548 4549
						WMI_BEACON_STAGGERED_MODE);
		if (ret)
4550
			ath10k_warn(ar, "failed to set beacon mode for vdev %d: %i\n",
4551
				    arvif->vdev_id, ret);
4552 4553 4554 4555 4556 4557 4558 4559 4560 4561 4562 4563

		ret = ath10k_mac_setup_bcn_tmpl(arvif);
		if (ret)
			ath10k_warn(ar, "failed to update beacon template: %d\n",
				    ret);
	}

	if (changed & BSS_CHANGED_AP_PROBE_RESP) {
		ret = ath10k_mac_setup_prb_tmpl(arvif);
		if (ret)
			ath10k_warn(ar, "failed to setup probe resp template on vdev %i: %d\n",
				    arvif->vdev_id, ret);
4564 4565
	}

4566
	if (changed & (BSS_CHANGED_BEACON_INFO | BSS_CHANGED_BEACON)) {
4567 4568
		arvif->dtim_period = info->dtim_period;

4569
		ath10k_dbg(ar, ATH10K_DBG_MAC,
4570 4571 4572
			   "mac vdev %d dtim_period %d\n",
			   arvif->vdev_id, arvif->dtim_period);

4573 4574
		vdev_param = ar->wmi.vdev_param->dtim_period;
		ret = ath10k_wmi_vdev_set_param(ar, arvif->vdev_id, vdev_param,
4575 4576
						arvif->dtim_period);
		if (ret)
4577
			ath10k_warn(ar, "failed to set dtim period for vdev %d: %i\n",
4578
				    arvif->vdev_id, ret);
4579 4580 4581 4582 4583 4584 4585 4586 4587 4588
	}

	if (changed & BSS_CHANGED_SSID &&
	    vif->type == NL80211_IFTYPE_AP) {
		arvif->u.ap.ssid_len = info->ssid_len;
		if (info->ssid_len)
			memcpy(arvif->u.ap.ssid, info->ssid, info->ssid_len);
		arvif->u.ap.hidden_ssid = info->hidden_ssid;
	}

4589 4590
	if (changed & BSS_CHANGED_BSSID && !is_zero_ether_addr(info->bssid))
		ether_addr_copy(arvif->bssid, info->bssid);
4591 4592 4593 4594 4595

	if (changed & BSS_CHANGED_BEACON_ENABLED)
		ath10k_control_beaconing(arvif, info);

	if (changed & BSS_CHANGED_ERP_CTS_PROT) {
4596
		arvif->use_cts_prot = info->use_cts_prot;
4597
		ath10k_dbg(ar, ATH10K_DBG_MAC, "mac vdev %d cts_prot %d\n",
4598
			   arvif->vdev_id, info->use_cts_prot);
4599

4600
		ret = ath10k_recalc_rtscts_prot(arvif);
4601
		if (ret)
4602
			ath10k_warn(ar, "failed to recalculate rts/cts prot for vdev %d: %d\n",
4603
				    arvif->vdev_id, ret);
Michal Kazior's avatar
Michal Kazior committed
4604 4605 4606 4607 4608 4609 4610

		vdev_param = ar->wmi.vdev_param->protection_mode;
		ret = ath10k_wmi_vdev_set_param(ar, arvif->vdev_id, vdev_param,
						info->use_cts_prot ? 1 : 0);
		if (ret)
			ath10k_warn(ar, "failed to set protection mode %d on vdev %i: %d\n",
					info->use_cts_prot, arvif->vdev_id, ret);
4611 4612 4613 4614 4615 4616 4617 4618 4619
	}

	if (changed & BSS_CHANGED_ERP_SLOT) {
		if (info->use_short_slot)
			slottime = WMI_VDEV_SLOT_TIME_SHORT; /* 9us */

		else
			slottime = WMI_VDEV_SLOT_TIME_LONG; /* 20us */

4620
		ath10k_dbg(ar, ATH10K_DBG_MAC, "mac vdev %d slot_time %d\n",
4621 4622
			   arvif->vdev_id, slottime);

4623 4624
		vdev_param = ar->wmi.vdev_param->slot_time;
		ret = ath10k_wmi_vdev_set_param(ar, arvif->vdev_id, vdev_param,
4625 4626
						slottime);
		if (ret)
4627
			ath10k_warn(ar, "failed to set erp slot for vdev %d: %i\n",
4628
				    arvif->vdev_id, ret);
4629 4630 4631 4632 4633 4634 4635 4636
	}

	if (changed & BSS_CHANGED_ERP_PREAMBLE) {
		if (info->use_short_preamble)
			preamble = WMI_VDEV_PREAMBLE_SHORT;
		else
			preamble = WMI_VDEV_PREAMBLE_LONG;

4637
		ath10k_dbg(ar, ATH10K_DBG_MAC,
4638 4639 4640
			   "mac vdev %d preamble %dn",
			   arvif->vdev_id, preamble);

4641 4642
		vdev_param = ar->wmi.vdev_param->preamble;
		ret = ath10k_wmi_vdev_set_param(ar, arvif->vdev_id, vdev_param,
4643 4644
						preamble);
		if (ret)
4645
			ath10k_warn(ar, "failed to set preamble for vdev %d: %i\n",
4646
				    arvif->vdev_id, ret);
4647 4648 4649
	}

	if (changed & BSS_CHANGED_ASSOC) {
4650 4651 4652 4653 4654 4655 4656
		if (info->assoc) {
			/* Workaround: Make sure monitor vdev is not running
			 * when associating to prevent some firmware revisions
			 * (e.g. 10.1 and 10.2) from crashing.
			 */
			if (ar->monitor_started)
				ath10k_monitor_stop(ar);
4657
			ath10k_bss_assoc(hw, vif, info);
4658
			ath10k_monitor_recalc(ar);
4659 4660
		} else {
			ath10k_bss_disassoc(hw, vif);
4661
		}
4662 4663
	}

4664 4665 4666 4667 4668 4669 4670 4671 4672 4673
	if (changed & BSS_CHANGED_TXPOWER) {
		ath10k_dbg(ar, ATH10K_DBG_MAC, "mac vdev_id %i txpower %d\n",
			   arvif->vdev_id, info->txpower);

		arvif->txpower = info->txpower;
		ret = ath10k_mac_txpower_recalc(ar);
		if (ret)
			ath10k_warn(ar, "failed to recalc tx power: %d\n", ret);
	}

4674
	if (changed & BSS_CHANGED_PS) {
4675 4676 4677
		arvif->ps = vif->bss_conf.ps;

		ret = ath10k_config_ps(ar);
4678 4679 4680 4681 4682
		if (ret)
			ath10k_warn(ar, "failed to setup ps on vdev %i: %d\n",
				    arvif->vdev_id, ret);
	}

4683 4684 4685 4686 4687
	mutex_unlock(&ar->conf_mutex);
}

static int ath10k_hw_scan(struct ieee80211_hw *hw,
			  struct ieee80211_vif *vif,
4688
			  struct ieee80211_scan_request *hw_req)
4689 4690 4691
{
	struct ath10k *ar = hw->priv;
	struct ath10k_vif *arvif = ath10k_vif_to_arvif(vif);
4692
	struct cfg80211_scan_request *req = &hw_req->req;
4693 4694 4695 4696 4697 4698 4699
	struct wmi_start_scan_arg arg;
	int ret = 0;
	int i;

	mutex_lock(&ar->conf_mutex);

	spin_lock_bh(&ar->data_lock);
4700 4701 4702 4703 4704 4705 4706 4707 4708 4709 4710 4711
	switch (ar->scan.state) {
	case ATH10K_SCAN_IDLE:
		reinit_completion(&ar->scan.started);
		reinit_completion(&ar->scan.completed);
		ar->scan.state = ATH10K_SCAN_STARTING;
		ar->scan.is_roc = false;
		ar->scan.vdev_id = arvif->vdev_id;
		ret = 0;
		break;
	case ATH10K_SCAN_STARTING:
	case ATH10K_SCAN_RUNNING:
	case ATH10K_SCAN_ABORTING:
4712
		ret = -EBUSY;
4713
		break;
4714 4715 4716
	}
	spin_unlock_bh(&ar->data_lock);

4717 4718 4719
	if (ret)
		goto exit;

4720 4721 4722 4723 4724 4725 4726 4727 4728 4729 4730 4731 4732 4733 4734 4735
	memset(&arg, 0, sizeof(arg));
	ath10k_wmi_start_scan_init(ar, &arg);
	arg.vdev_id = arvif->vdev_id;
	arg.scan_id = ATH10K_SCAN_ID;

	if (req->ie_len) {
		arg.ie_len = req->ie_len;
		memcpy(arg.ie, req->ie, arg.ie_len);
	}

	if (req->n_ssids) {
		arg.n_ssids = req->n_ssids;
		for (i = 0; i < arg.n_ssids; i++) {
			arg.ssids[i].len  = req->ssids[i].ssid_len;
			arg.ssids[i].ssid = req->ssids[i].ssid;
		}
4736 4737
	} else {
		arg.scan_ctrl_flags |= WMI_SCAN_FLAG_PASSIVE;
4738 4739 4740 4741 4742 4743 4744 4745 4746 4747
	}

	if (req->n_channels) {
		arg.n_channels = req->n_channels;
		for (i = 0; i < arg.n_channels; i++)
			arg.channels[i] = req->channels[i]->center_freq;
	}

	ret = ath10k_start_scan(ar, &arg);
	if (ret) {
4748
		ath10k_warn(ar, "failed to start hw scan: %d\n", ret);
4749
		spin_lock_bh(&ar->data_lock);
4750
		ar->scan.state = ATH10K_SCAN_IDLE;
4751 4752 4753 4754 4755 4756 4757 4758 4759 4760 4761 4762 4763 4764
		spin_unlock_bh(&ar->data_lock);
	}

exit:
	mutex_unlock(&ar->conf_mutex);
	return ret;
}

static void ath10k_cancel_hw_scan(struct ieee80211_hw *hw,
				  struct ieee80211_vif *vif)
{
	struct ath10k *ar = hw->priv;

	mutex_lock(&ar->conf_mutex);
4765
	ath10k_scan_abort(ar);
4766
	mutex_unlock(&ar->conf_mutex);
4767 4768

	cancel_delayed_work_sync(&ar->scan.timeout);
4769 4770
}

4771 4772 4773 4774 4775 4776 4777 4778 4779 4780 4781 4782 4783
static void ath10k_set_key_h_def_keyidx(struct ath10k *ar,
					struct ath10k_vif *arvif,
					enum set_key_cmd cmd,
					struct ieee80211_key_conf *key)
{
	u32 vdev_param = arvif->ar->wmi.vdev_param->def_keyid;
	int ret;

	/* 10.1 firmware branch requires default key index to be set to group
	 * key index after installing it. Otherwise FW/HW Txes corrupted
	 * frames with multi-vif APs. This is not required for main firmware
	 * branch (e.g. 636).
	 *
4784 4785 4786 4787 4788
	 * This is also needed for 636 fw for IBSS-RSN to work more reliably.
	 *
	 * FIXME: It remains unknown if this is required for multi-vif STA
	 * interfaces on 10.1.
	 */
4789

4790 4791
	if (arvif->vdev_type != WMI_VDEV_TYPE_AP &&
	    arvif->vdev_type != WMI_VDEV_TYPE_IBSS)
4792 4793 4794 4795 4796 4797 4798 4799 4800 4801 4802 4803 4804 4805 4806 4807 4808
		return;

	if (key->cipher == WLAN_CIPHER_SUITE_WEP40)
		return;

	if (key->cipher == WLAN_CIPHER_SUITE_WEP104)
		return;

	if (key->flags & IEEE80211_KEY_FLAG_PAIRWISE)
		return;

	if (cmd != SET_KEY)
		return;

	ret = ath10k_wmi_vdev_set_param(ar, arvif->vdev_id, vdev_param,
					key->keyidx);
	if (ret)
4809
		ath10k_warn(ar, "failed to set vdev %i group key as default key: %d\n",
4810
			    arvif->vdev_id, ret);
4811 4812
}

4813 4814 4815 4816 4817 4818 4819 4820 4821 4822 4823
static int ath10k_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 ath10k *ar = hw->priv;
	struct ath10k_vif *arvif = ath10k_vif_to_arvif(vif);
	struct ath10k_peer *peer;
	const u8 *peer_addr;
	bool is_wep = key->cipher == WLAN_CIPHER_SUITE_WEP40 ||
		      key->cipher == WLAN_CIPHER_SUITE_WEP104;
	int ret = 0;
4824
	int ret2;
4825
	u32 flags = 0;
4826
	u32 flags2;
4827

4828 4829 4830
	/* this one needs to be done in software */
	if (key->cipher == WLAN_CIPHER_SUITE_AES_CMAC)
		return 1;
4831

4832 4833 4834
	if (arvif->nohwcrypt)
		return 1;

4835 4836 4837 4838 4839 4840 4841 4842 4843 4844 4845 4846 4847 4848
	if (key->keyidx > WMI_MAX_KEY_INDEX)
		return -ENOSPC;

	mutex_lock(&ar->conf_mutex);

	if (sta)
		peer_addr = sta->addr;
	else if (arvif->vdev_type == WMI_VDEV_TYPE_STA)
		peer_addr = vif->bss_conf.bssid;
	else
		peer_addr = vif->addr;

	key->hw_key_idx = key->keyidx;

4849 4850 4851 4852 4853 4854 4855
	if (is_wep) {
		if (cmd == SET_KEY)
			arvif->wep_keys[key->keyidx] = key;
		else
			arvif->wep_keys[key->keyidx] = NULL;
	}

4856 4857 4858 4859 4860 4861 4862 4863
	/* the peer should not disappear in mid-way (unless FW goes awry) since
	 * we already hold conf_mutex. we just make sure its there now. */
	spin_lock_bh(&ar->data_lock);
	peer = ath10k_peer_find(ar, arvif->vdev_id, peer_addr);
	spin_unlock_bh(&ar->data_lock);

	if (!peer) {
		if (cmd == SET_KEY) {
4864
			ath10k_warn(ar, "failed to install key for non-existent peer %pM\n",
4865 4866 4867 4868 4869 4870 4871 4872 4873 4874
				    peer_addr);
			ret = -EOPNOTSUPP;
			goto exit;
		} else {
			/* if the peer doesn't exist there is no key to disable
			 * anymore */
			goto exit;
		}
	}

Michal Kazior's avatar
Michal Kazior committed
4875 4876 4877 4878
	if (key->flags & IEEE80211_KEY_FLAG_PAIRWISE)
		flags |= WMI_KEY_PAIRWISE;
	else
		flags |= WMI_KEY_GROUP;
4879 4880 4881 4882 4883

	if (is_wep) {
		if (cmd == DISABLE_KEY)
			ath10k_clear_vdev_key(arvif, key);

4884 4885 4886 4887 4888 4889 4890 4891
		/* When WEP keys are uploaded it's possible that there are
		 * stations associated already (e.g. when merging) without any
		 * keys. Static WEP needs an explicit per-peer key upload.
		 */
		if (vif->type == NL80211_IFTYPE_ADHOC &&
		    cmd == SET_KEY)
			ath10k_mac_vif_update_wep_key(arvif, key);

4892 4893 4894 4895 4896 4897 4898 4899 4900
		/* 802.1x never sets the def_wep_key_idx so each set_key()
		 * call changes default tx key.
		 *
		 * Static WEP sets def_wep_key_idx via .set_default_unicast_key
		 * after first set_key().
		 */
		if (cmd == SET_KEY && arvif->def_wep_key_idx == -1)
			flags |= WMI_KEY_TX_USAGE;
	}
4901

4902
	ret = ath10k_install_key(arvif, key, cmd, peer_addr, flags);
4903
	if (ret) {
4904
		WARN_ON(ret > 0);
4905
		ath10k_warn(ar, "failed to install key for vdev %i peer %pM: %d\n",
4906
			    arvif->vdev_id, peer_addr, ret);
4907 4908 4909
		goto exit;
	}

4910 4911 4912 4913 4914 4915 4916 4917 4918 4919
	/* mac80211 sets static WEP keys as groupwise while firmware requires
	 * them to be installed twice as both pairwise and groupwise.
	 */
	if (is_wep && !sta && vif->type == NL80211_IFTYPE_STATION) {
		flags2 = flags;
		flags2 &= ~WMI_KEY_GROUP;
		flags2 |= WMI_KEY_PAIRWISE;

		ret = ath10k_install_key(arvif, key, cmd, peer_addr, flags2);
		if (ret) {
4920
			WARN_ON(ret > 0);
4921 4922 4923 4924
			ath10k_warn(ar, "failed to install (ucast) key for vdev %i peer %pM: %d\n",
				    arvif->vdev_id, peer_addr, ret);
			ret2 = ath10k_install_key(arvif, key, DISABLE_KEY,
						  peer_addr, flags);
4925 4926
			if (ret2) {
				WARN_ON(ret2 > 0);
4927 4928
				ath10k_warn(ar, "failed to disable (mcast) key for vdev %i peer %pM: %d\n",
					    arvif->vdev_id, peer_addr, ret2);
4929
			}
4930 4931 4932 4933
			goto exit;
		}
	}

4934 4935
	ath10k_set_key_h_def_keyidx(ar, arvif, cmd, key);

4936 4937 4938 4939 4940 4941 4942 4943
	spin_lock_bh(&ar->data_lock);
	peer = ath10k_peer_find(ar, arvif->vdev_id, peer_addr);
	if (peer && cmd == SET_KEY)
		peer->keys[key->keyidx] = key;
	else if (peer && cmd == DISABLE_KEY)
		peer->keys[key->keyidx] = NULL;
	else if (peer == NULL)
		/* impossible unless FW goes crazy */
4944
		ath10k_warn(ar, "Peer %pM disappeared!\n", peer_addr);
4945 4946 4947 4948 4949 4950 4951
	spin_unlock_bh(&ar->data_lock);

exit:
	mutex_unlock(&ar->conf_mutex);
	return ret;
}

4952 4953 4954 4955 4956 4957 4958 4959 4960 4961 4962 4963 4964 4965 4966 4967 4968 4969 4970 4971 4972 4973 4974 4975 4976 4977 4978 4979 4980
static void ath10k_set_default_unicast_key(struct ieee80211_hw *hw,
					   struct ieee80211_vif *vif,
					   int keyidx)
{
	struct ath10k *ar = hw->priv;
	struct ath10k_vif *arvif = ath10k_vif_to_arvif(vif);
	int ret;

	mutex_lock(&arvif->ar->conf_mutex);

	if (arvif->ar->state != ATH10K_STATE_ON)
		goto unlock;

	ath10k_dbg(ar, ATH10K_DBG_MAC, "mac vdev %d set keyidx %d\n",
		   arvif->vdev_id, keyidx);

	ret = ath10k_wmi_vdev_set_param(arvif->ar,
					arvif->vdev_id,
					arvif->ar->wmi.vdev_param->def_keyid,
					keyidx);

	if (ret) {
		ath10k_warn(ar, "failed to update wep key index for vdev %d: %d\n",
			    arvif->vdev_id,
			    ret);
		goto unlock;
	}

	arvif->def_wep_key_idx = keyidx;
4981

4982 4983 4984 4985
unlock:
	mutex_unlock(&arvif->ar->conf_mutex);
}

4986 4987 4988 4989 4990 4991
static void ath10k_sta_rc_update_wk(struct work_struct *wk)
{
	struct ath10k *ar;
	struct ath10k_vif *arvif;
	struct ath10k_sta *arsta;
	struct ieee80211_sta *sta;
4992 4993 4994 4995
	struct cfg80211_chan_def def;
	enum ieee80211_band band;
	const u8 *ht_mcs_mask;
	const u16 *vht_mcs_mask;
4996 4997 4998 4999 5000 5001 5002 5003
	u32 changed, bw, nss, smps;
	int err;

	arsta = container_of(wk, struct ath10k_sta, update_wk);
	sta = container_of((void *)arsta, struct ieee80211_sta, drv_priv);
	arvif = arsta->arvif;
	ar = arvif->ar;

5004 5005 5006 5007 5008 5009 5010
	if (WARN_ON(ath10k_mac_vif_chan(arvif->vif, &def)))
		return;

	band = def.chan->band;
	ht_mcs_mask = arvif->bitrate_mask.control[band].ht_mcs;
	vht_mcs_mask = arvif->bitrate_mask.control[band].vht_mcs;

5011 5012 5013 5014 5015 5016 5017 5018 5019 5020 5021 5022 5023
	spin_lock_bh(&ar->data_lock);

	changed = arsta->changed;
	arsta->changed = 0;

	bw = arsta->bw;
	nss = arsta->nss;
	smps = arsta->smps;

	spin_unlock_bh(&ar->data_lock);

	mutex_lock(&ar->conf_mutex);

5024 5025 5026 5027
	nss = max_t(u32, 1, nss);
	nss = min(nss, max(ath10k_mac_max_ht_nss(ht_mcs_mask),
			   ath10k_mac_max_vht_nss(vht_mcs_mask)));

5028
	if (changed & IEEE80211_RC_BW_CHANGED) {
5029
		ath10k_dbg(ar, ATH10K_DBG_MAC, "mac update sta %pM peer bw %d\n",
5030 5031 5032 5033 5034
			   sta->addr, bw);

		err = ath10k_wmi_peer_set_param(ar, arvif->vdev_id, sta->addr,
						WMI_PEER_CHAN_WIDTH, bw);
		if (err)
5035
			ath10k_warn(ar, "failed to update STA %pM peer bw %d: %d\n",
5036 5037 5038 5039
				    sta->addr, bw, err);
	}

	if (changed & IEEE80211_RC_NSS_CHANGED) {
5040
		ath10k_dbg(ar, ATH10K_DBG_MAC, "mac update sta %pM nss %d\n",
5041 5042 5043 5044 5045
			   sta->addr, nss);

		err = ath10k_wmi_peer_set_param(ar, arvif->vdev_id, sta->addr,
						WMI_PEER_NSS, nss);
		if (err)
5046
			ath10k_warn(ar, "failed to update STA %pM nss %d: %d\n",
5047 5048 5049 5050
				    sta->addr, nss, err);
	}

	if (changed & IEEE80211_RC_SMPS_CHANGED) {
5051
		ath10k_dbg(ar, ATH10K_DBG_MAC, "mac update sta %pM smps %d\n",
5052 5053 5054 5055 5056
			   sta->addr, smps);

		err = ath10k_wmi_peer_set_param(ar, arvif->vdev_id, sta->addr,
						WMI_PEER_SMPS_STATE, smps);
		if (err)
5057
			ath10k_warn(ar, "failed to update STA %pM smps %d: %d\n",
5058 5059 5060
				    sta->addr, smps, err);
	}

5061 5062 5063
	if (changed & IEEE80211_RC_SUPP_RATES_CHANGED ||
	    changed & IEEE80211_RC_NSS_CHANGED) {
		ath10k_dbg(ar, ATH10K_DBG_MAC, "mac update sta %pM supp rates/nss\n",
5064 5065
			   sta->addr);

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5066
		err = ath10k_station_assoc(ar, arvif->vif, sta, true);
5067
		if (err)
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			ath10k_warn(ar, "failed to reassociate station: %pM\n",
5069 5070 5071
				    sta->addr);
	}

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	mutex_unlock(&ar->conf_mutex);
}

5075 5076
static int ath10k_mac_inc_num_stations(struct ath10k_vif *arvif,
				       struct ieee80211_sta *sta)
5077 5078 5079 5080 5081
{
	struct ath10k *ar = arvif->ar;

	lockdep_assert_held(&ar->conf_mutex);

5082
	if (arvif->vdev_type == WMI_VDEV_TYPE_STA && !sta->tdls)
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		return 0;

	if (ar->num_stations >= ar->max_num_stations)
		return -ENOBUFS;

	ar->num_stations++;

	return 0;
}

5093 5094
static void ath10k_mac_dec_num_stations(struct ath10k_vif *arvif,
					struct ieee80211_sta *sta)
5095 5096 5097 5098 5099
{
	struct ath10k *ar = arvif->ar;

	lockdep_assert_held(&ar->conf_mutex);

5100
	if (arvif->vdev_type == WMI_VDEV_TYPE_STA && !sta->tdls)
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		return;

	ar->num_stations--;
}

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struct ath10k_mac_tdls_iter_data {
	u32 num_tdls_stations;
	struct ieee80211_vif *curr_vif;
};

static void ath10k_mac_tdls_vif_stations_count_iter(void *data,
						    struct ieee80211_sta *sta)
5113
{
5114
	struct ath10k_mac_tdls_iter_data *iter_data = data;
5115
	struct ath10k_sta *arsta = (struct ath10k_sta *)sta->drv_priv;
5116
	struct ieee80211_vif *sta_vif = arsta->arvif->vif;
5117

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	if (sta->tdls && sta_vif == iter_data->curr_vif)
		iter_data->num_tdls_stations++;
}

static int ath10k_mac_tdls_vif_stations_count(struct ieee80211_hw *hw,
					      struct ieee80211_vif *vif)
{
	struct ath10k_mac_tdls_iter_data data = {};

	data.curr_vif = vif;

	ieee80211_iterate_stations_atomic(hw,
					  ath10k_mac_tdls_vif_stations_count_iter,
					  &data);
	return data.num_tdls_stations;
}

static void ath10k_mac_tdls_vifs_count_iter(void *data, u8 *mac,
					    struct ieee80211_vif *vif)
{
	struct ath10k_vif *arvif = ath10k_vif_to_arvif(vif);
	int *num_tdls_vifs = data;

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

	if (ath10k_mac_tdls_vif_stations_count(arvif->ar->hw, vif) > 0)
		(*num_tdls_vifs)++;
}

static int ath10k_mac_tdls_vifs_count(struct ieee80211_hw *hw)
{
	int num_tdls_vifs = 0;

	ieee80211_iterate_active_interfaces_atomic(hw,
						   IEEE80211_IFACE_ITER_NORMAL,
						   ath10k_mac_tdls_vifs_count_iter,
						   &num_tdls_vifs);
	return num_tdls_vifs;
}

5159 5160 5161 5162 5163 5164 5165 5166
static int ath10k_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 ath10k *ar = hw->priv;
	struct ath10k_vif *arvif = ath10k_vif_to_arvif(vif);
5167
	struct ath10k_sta *arsta = (struct ath10k_sta *)sta->drv_priv;
5168 5169
	int ret = 0;

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	if (old_state == IEEE80211_STA_NOTEXIST &&
	    new_state == IEEE80211_STA_NONE) {
		memset(arsta, 0, sizeof(*arsta));
		arsta->arvif = arvif;
		INIT_WORK(&arsta->update_wk, ath10k_sta_rc_update_wk);
	}

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	/* cancel must be done outside the mutex to avoid deadlock */
	if ((old_state == IEEE80211_STA_NONE &&
	     new_state == IEEE80211_STA_NOTEXIST))
		cancel_work_sync(&arsta->update_wk);

5182 5183 5184
	mutex_lock(&ar->conf_mutex);

	if (old_state == IEEE80211_STA_NOTEXIST &&
5185
	    new_state == IEEE80211_STA_NONE) {
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		/*
		 * New station addition.
		 */
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		enum wmi_peer_type peer_type = WMI_PEER_TYPE_DEFAULT;
		u32 num_tdls_stations;
		u32 num_tdls_vifs;

5193 5194 5195 5196 5197
		ath10k_dbg(ar, ATH10K_DBG_MAC,
			   "mac vdev %d peer create %pM (new sta) sta %d / %d peer %d / %d\n",
			   arvif->vdev_id, sta->addr,
			   ar->num_stations + 1, ar->max_num_stations,
			   ar->num_peers + 1, ar->max_num_peers);
5198

5199
		ret = ath10k_mac_inc_num_stations(arvif, sta);
5200 5201 5202
		if (ret) {
			ath10k_warn(ar, "refusing to associate station: too many connected already (%d)\n",
				    ar->max_num_stations);
5203 5204 5205
			goto exit;
		}

5206 5207 5208
		if (sta->tdls)
			peer_type = WMI_PEER_TYPE_TDLS;

5209
		ret = ath10k_peer_create(ar, arvif->vdev_id, sta->addr,
5210
					 peer_type);
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5211
		if (ret) {
5212
			ath10k_warn(ar, "failed to add peer %pM for vdev %d when adding a new sta: %i\n",
5213
				    sta->addr, arvif->vdev_id, ret);
5214
			ath10k_mac_dec_num_stations(arvif, sta);
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5215 5216
			goto exit;
		}
5217

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		if (!sta->tdls)
			goto exit;

		num_tdls_stations = ath10k_mac_tdls_vif_stations_count(hw, vif);
		num_tdls_vifs = ath10k_mac_tdls_vifs_count(hw);

		if (num_tdls_vifs >= ar->max_num_tdls_vdevs &&
		    num_tdls_stations == 0) {
			ath10k_warn(ar, "vdev %i exceeded maximum number of tdls vdevs %i\n",
				    arvif->vdev_id, ar->max_num_tdls_vdevs);
			ath10k_peer_delete(ar, arvif->vdev_id, sta->addr);
			ath10k_mac_dec_num_stations(arvif, sta);
			ret = -ENOBUFS;
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			goto exit;
		}
5233

5234 5235 5236
		if (num_tdls_stations == 0) {
			/* This is the first tdls peer in current vif */
			enum wmi_tdls_state state = WMI_TDLS_ENABLE_ACTIVE;
5237

5238 5239
			ret = ath10k_wmi_update_fw_tdls_state(ar, arvif->vdev_id,
							      state);
5240
			if (ret) {
5241
				ath10k_warn(ar, "failed to update fw tdls state on vdev %i: %i\n",
5242
					    arvif->vdev_id, ret);
5243 5244 5245
				ath10k_peer_delete(ar, arvif->vdev_id,
						   sta->addr);
				ath10k_mac_dec_num_stations(arvif, sta);
5246 5247
				goto exit;
			}
5248 5249 5250 5251 5252 5253 5254 5255 5256 5257
		}

		ret = ath10k_mac_tdls_peer_update(ar, arvif->vdev_id, sta,
						  WMI_TDLS_PEER_STATE_PEERING);
		if (ret) {
			ath10k_warn(ar,
				    "failed to update tdls peer %pM for vdev %d when adding a new sta: %i\n",
				    sta->addr, arvif->vdev_id, ret);
			ath10k_peer_delete(ar, arvif->vdev_id, sta->addr);
			ath10k_mac_dec_num_stations(arvif, sta);
5258

5259 5260 5261 5262
			if (num_tdls_stations != 0)
				goto exit;
			ath10k_wmi_update_fw_tdls_state(ar, arvif->vdev_id,
							WMI_TDLS_DISABLE);
5263
		}
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	} else if ((old_state == IEEE80211_STA_NONE &&
		    new_state == IEEE80211_STA_NOTEXIST)) {
		/*
		 * Existing station deletion.
		 */
5269
		ath10k_dbg(ar, ATH10K_DBG_MAC,
5270 5271
			   "mac vdev %d peer delete %pM (sta gone)\n",
			   arvif->vdev_id, sta->addr);
5272

5273 5274
		ret = ath10k_peer_delete(ar, arvif->vdev_id, sta->addr);
		if (ret)
5275
			ath10k_warn(ar, "failed to delete peer %pM for vdev %d: %i\n",
5276
				    sta->addr, arvif->vdev_id, ret);
5277

5278
		ath10k_mac_dec_num_stations(arvif, sta);
5279 5280 5281 5282 5283 5284 5285 5286 5287 5288 5289 5290 5291 5292

		if (!sta->tdls)
			goto exit;

		if (ath10k_mac_tdls_vif_stations_count(hw, vif))
			goto exit;

		/* This was the last tdls peer in current vif */
		ret = ath10k_wmi_update_fw_tdls_state(ar, arvif->vdev_id,
						      WMI_TDLS_DISABLE);
		if (ret) {
			ath10k_warn(ar, "failed to update fw tdls state on vdev %i: %i\n",
				    arvif->vdev_id, ret);
		}
5293 5294 5295 5296 5297 5298 5299
	} else if (old_state == IEEE80211_STA_AUTH &&
		   new_state == IEEE80211_STA_ASSOC &&
		   (vif->type == NL80211_IFTYPE_AP ||
		    vif->type == NL80211_IFTYPE_ADHOC)) {
		/*
		 * New association.
		 */
5300
		ath10k_dbg(ar, ATH10K_DBG_MAC, "mac sta %pM associated\n",
5301 5302
			   sta->addr);

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5303
		ret = ath10k_station_assoc(ar, vif, sta, false);
5304
		if (ret)
5305
			ath10k_warn(ar, "failed to associate station %pM for vdev %i: %i\n",
5306
				    sta->addr, arvif->vdev_id, ret);
5307
	} else if (old_state == IEEE80211_STA_ASSOC &&
5308 5309 5310 5311 5312 5313 5314 5315 5316 5317 5318 5319 5320 5321 5322 5323 5324 5325 5326 5327 5328 5329 5330 5331
		   new_state == IEEE80211_STA_AUTHORIZED &&
		   sta->tdls) {
		/*
		 * Tdls station authorized.
		 */
		ath10k_dbg(ar, ATH10K_DBG_MAC, "mac tdls sta %pM authorized\n",
			   sta->addr);

		ret = ath10k_station_assoc(ar, vif, sta, false);
		if (ret) {
			ath10k_warn(ar, "failed to associate tdls station %pM for vdev %i: %i\n",
				    sta->addr, arvif->vdev_id, ret);
			goto exit;
		}

		ret = ath10k_mac_tdls_peer_update(ar, arvif->vdev_id, sta,
						  WMI_TDLS_PEER_STATE_CONNECTED);
		if (ret)
			ath10k_warn(ar, "failed to update tdls peer %pM for vdev %i: %i\n",
				    sta->addr, arvif->vdev_id, ret);
	} else if (old_state == IEEE80211_STA_ASSOC &&
		    new_state == IEEE80211_STA_AUTH &&
		    (vif->type == NL80211_IFTYPE_AP ||
		     vif->type == NL80211_IFTYPE_ADHOC)) {
5332 5333 5334
		/*
		 * Disassociation.
		 */
5335
		ath10k_dbg(ar, ATH10K_DBG_MAC, "mac sta %pM disassociated\n",
5336 5337
			   sta->addr);

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5338
		ret = ath10k_station_disassoc(ar, vif, sta);
5339
		if (ret)
5340
			ath10k_warn(ar, "failed to disassociate station: %pM vdev %i: %i\n",
5341
				    sta->addr, arvif->vdev_id, ret);
5342
	}
5343
exit:
5344 5345 5346 5347 5348
	mutex_unlock(&ar->conf_mutex);
	return ret;
}

static int ath10k_conf_tx_uapsd(struct ath10k *ar, struct ieee80211_vif *vif,
5349
				u16 ac, bool enable)
5350 5351
{
	struct ath10k_vif *arvif = ath10k_vif_to_arvif(vif);
5352 5353
	struct wmi_sta_uapsd_auto_trig_arg arg = {};
	u32 prio = 0, acc = 0;
5354 5355 5356
	u32 value = 0;
	int ret = 0;

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5357 5358
	lockdep_assert_held(&ar->conf_mutex);

5359 5360 5361 5362 5363 5364 5365
	if (arvif->vdev_type != WMI_VDEV_TYPE_STA)
		return 0;

	switch (ac) {
	case IEEE80211_AC_VO:
		value = WMI_STA_PS_UAPSD_AC3_DELIVERY_EN |
			WMI_STA_PS_UAPSD_AC3_TRIGGER_EN;
5366 5367
		prio = 7;
		acc = 3;
5368 5369 5370 5371
		break;
	case IEEE80211_AC_VI:
		value = WMI_STA_PS_UAPSD_AC2_DELIVERY_EN |
			WMI_STA_PS_UAPSD_AC2_TRIGGER_EN;
5372 5373
		prio = 5;
		acc = 2;
5374 5375 5376 5377
		break;
	case IEEE80211_AC_BE:
		value = WMI_STA_PS_UAPSD_AC1_DELIVERY_EN |
			WMI_STA_PS_UAPSD_AC1_TRIGGER_EN;
5378 5379
		prio = 2;
		acc = 1;
5380 5381 5382 5383
		break;
	case IEEE80211_AC_BK:
		value = WMI_STA_PS_UAPSD_AC0_DELIVERY_EN |
			WMI_STA_PS_UAPSD_AC0_TRIGGER_EN;
5384 5385
		prio = 0;
		acc = 0;
5386 5387 5388 5389 5390 5391 5392 5393 5394 5395 5396 5397
		break;
	}

	if (enable)
		arvif->u.sta.uapsd |= value;
	else
		arvif->u.sta.uapsd &= ~value;

	ret = ath10k_wmi_set_sta_ps_param(ar, arvif->vdev_id,
					  WMI_STA_PS_PARAM_UAPSD,
					  arvif->u.sta.uapsd);
	if (ret) {
5398
		ath10k_warn(ar, "failed to set uapsd params: %d\n", ret);
5399 5400 5401 5402 5403 5404 5405 5406 5407 5408 5409 5410
		goto exit;
	}

	if (arvif->u.sta.uapsd)
		value = WMI_STA_PS_RX_WAKE_POLICY_POLL_UAPSD;
	else
		value = WMI_STA_PS_RX_WAKE_POLICY_WAKE;

	ret = ath10k_wmi_set_sta_ps_param(ar, arvif->vdev_id,
					  WMI_STA_PS_PARAM_RX_WAKE_POLICY,
					  value);
	if (ret)
5411
		ath10k_warn(ar, "failed to set rx wake param: %d\n", ret);
5412

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	ret = ath10k_mac_vif_recalc_ps_wake_threshold(arvif);
	if (ret) {
		ath10k_warn(ar, "failed to recalc ps wake threshold on vdev %i: %d\n",
			    arvif->vdev_id, ret);
		return ret;
	}

	ret = ath10k_mac_vif_recalc_ps_poll_count(arvif);
	if (ret) {
		ath10k_warn(ar, "failed to recalc ps poll count on vdev %i: %d\n",
			    arvif->vdev_id, ret);
		return ret;
	}

5427 5428 5429 5430 5431 5432 5433 5434 5435 5436 5437 5438 5439 5440 5441 5442 5443 5444 5445 5446 5447 5448 5449
	if (test_bit(WMI_SERVICE_STA_UAPSD_BASIC_AUTO_TRIG, ar->wmi.svc_map) ||
	    test_bit(WMI_SERVICE_STA_UAPSD_VAR_AUTO_TRIG, ar->wmi.svc_map)) {
		/* Only userspace can make an educated decision when to send
		 * trigger frame. The following effectively disables u-UAPSD
		 * autotrigger in firmware (which is enabled by default
		 * provided the autotrigger service is available).
		 */

		arg.wmm_ac = acc;
		arg.user_priority = prio;
		arg.service_interval = 0;
		arg.suspend_interval = WMI_STA_UAPSD_MAX_INTERVAL_MSEC;
		arg.delay_interval = WMI_STA_UAPSD_MAX_INTERVAL_MSEC;

		ret = ath10k_wmi_vdev_sta_uapsd(ar, arvif->vdev_id,
						arvif->bssid, &arg, 1);
		if (ret) {
			ath10k_warn(ar, "failed to set uapsd auto trigger %d\n",
				    ret);
			return ret;
		}
	}

5450 5451 5452 5453 5454 5455 5456 5457 5458
exit:
	return ret;
}

static int ath10k_conf_tx(struct ieee80211_hw *hw,
			  struct ieee80211_vif *vif, u16 ac,
			  const struct ieee80211_tx_queue_params *params)
{
	struct ath10k *ar = hw->priv;
5459
	struct ath10k_vif *arvif = ath10k_vif_to_arvif(vif);
5460 5461 5462 5463 5464 5465 5466
	struct wmi_wmm_params_arg *p = NULL;
	int ret;

	mutex_lock(&ar->conf_mutex);

	switch (ac) {
	case IEEE80211_AC_VO:
5467
		p = &arvif->wmm_params.ac_vo;
5468 5469
		break;
	case IEEE80211_AC_VI:
5470
		p = &arvif->wmm_params.ac_vi;
5471 5472
		break;
	case IEEE80211_AC_BE:
5473
		p = &arvif->wmm_params.ac_be;
5474 5475
		break;
	case IEEE80211_AC_BK:
5476
		p = &arvif->wmm_params.ac_bk;
5477 5478 5479 5480 5481 5482 5483 5484 5485 5486 5487 5488 5489 5490 5491 5492 5493 5494 5495
		break;
	}

	if (WARN_ON(!p)) {
		ret = -EINVAL;
		goto exit;
	}

	p->cwmin = params->cw_min;
	p->cwmax = params->cw_max;
	p->aifs = params->aifs;

	/*
	 * The channel time duration programmed in the HW is in absolute
	 * microseconds, while mac80211 gives the txop in units of
	 * 32 microseconds.
	 */
	p->txop = params->txop * 32;

5496 5497 5498 5499 5500 5501 5502 5503 5504 5505 5506 5507 5508 5509 5510 5511 5512
	if (ar->wmi.ops->gen_vdev_wmm_conf) {
		ret = ath10k_wmi_vdev_wmm_conf(ar, arvif->vdev_id,
					       &arvif->wmm_params);
		if (ret) {
			ath10k_warn(ar, "failed to set vdev wmm params on vdev %i: %d\n",
				    arvif->vdev_id, ret);
			goto exit;
		}
	} else {
		/* This won't work well with multi-interface cases but it's
		 * better than nothing.
		 */
		ret = ath10k_wmi_pdev_set_wmm_params(ar, &arvif->wmm_params);
		if (ret) {
			ath10k_warn(ar, "failed to set wmm params: %d\n", ret);
			goto exit;
		}
5513 5514 5515 5516
	}

	ret = ath10k_conf_tx_uapsd(ar, vif, ac, params->uapsd);
	if (ret)
5517
		ath10k_warn(ar, "failed to set sta uapsd: %d\n", ret);
5518 5519 5520 5521 5522 5523 5524 5525 5526 5527 5528 5529 5530 5531 5532 5533 5534

exit:
	mutex_unlock(&ar->conf_mutex);
	return ret;
}

#define ATH10K_ROC_TIMEOUT_HZ (2*HZ)

static int ath10k_remain_on_channel(struct ieee80211_hw *hw,
				    struct ieee80211_vif *vif,
				    struct ieee80211_channel *chan,
				    int duration,
				    enum ieee80211_roc_type type)
{
	struct ath10k *ar = hw->priv;
	struct ath10k_vif *arvif = ath10k_vif_to_arvif(vif);
	struct wmi_start_scan_arg arg;
5535
	int ret = 0;
5536
	u32 scan_time_msec;
5537 5538 5539 5540

	mutex_lock(&ar->conf_mutex);

	spin_lock_bh(&ar->data_lock);
5541 5542 5543 5544 5545 5546 5547 5548 5549
	switch (ar->scan.state) {
	case ATH10K_SCAN_IDLE:
		reinit_completion(&ar->scan.started);
		reinit_completion(&ar->scan.completed);
		reinit_completion(&ar->scan.on_channel);
		ar->scan.state = ATH10K_SCAN_STARTING;
		ar->scan.is_roc = true;
		ar->scan.vdev_id = arvif->vdev_id;
		ar->scan.roc_freq = chan->center_freq;
5550
		ar->scan.roc_notify = true;
5551 5552 5553 5554 5555
		ret = 0;
		break;
	case ATH10K_SCAN_STARTING:
	case ATH10K_SCAN_RUNNING:
	case ATH10K_SCAN_ABORTING:
5556
		ret = -EBUSY;
5557
		break;
5558 5559 5560
	}
	spin_unlock_bh(&ar->data_lock);

5561 5562 5563
	if (ret)
		goto exit;

5564
	scan_time_msec = ar->hw->wiphy->max_remain_on_channel_duration * 2;
5565

5566 5567 5568 5569 5570 5571
	memset(&arg, 0, sizeof(arg));
	ath10k_wmi_start_scan_init(ar, &arg);
	arg.vdev_id = arvif->vdev_id;
	arg.scan_id = ATH10K_SCAN_ID;
	arg.n_channels = 1;
	arg.channels[0] = chan->center_freq;
5572 5573 5574
	arg.dwell_time_active = scan_time_msec;
	arg.dwell_time_passive = scan_time_msec;
	arg.max_scan_time = scan_time_msec;
5575 5576
	arg.scan_ctrl_flags |= WMI_SCAN_FLAG_PASSIVE;
	arg.scan_ctrl_flags |= WMI_SCAN_FILTER_PROBE_REQ;
5577
	arg.burst_duration_ms = duration;
5578 5579 5580

	ret = ath10k_start_scan(ar, &arg);
	if (ret) {
5581
		ath10k_warn(ar, "failed to start roc scan: %d\n", ret);
5582
		spin_lock_bh(&ar->data_lock);
5583
		ar->scan.state = ATH10K_SCAN_IDLE;
5584 5585 5586 5587 5588 5589
		spin_unlock_bh(&ar->data_lock);
		goto exit;
	}

	ret = wait_for_completion_timeout(&ar->scan.on_channel, 3*HZ);
	if (ret == 0) {
5590
		ath10k_warn(ar, "failed to switch to channel for roc scan\n");
5591 5592 5593

		ret = ath10k_scan_stop(ar);
		if (ret)
5594
			ath10k_warn(ar, "failed to stop scan: %d\n", ret);
5595

5596 5597 5598 5599
		ret = -ETIMEDOUT;
		goto exit;
	}

5600 5601 5602
	ieee80211_queue_delayed_work(ar->hw, &ar->scan.timeout,
				     msecs_to_jiffies(duration));

5603 5604 5605 5606 5607 5608 5609 5610 5611 5612 5613
	ret = 0;
exit:
	mutex_unlock(&ar->conf_mutex);
	return ret;
}

static int ath10k_cancel_remain_on_channel(struct ieee80211_hw *hw)
{
	struct ath10k *ar = hw->priv;

	mutex_lock(&ar->conf_mutex);
5614 5615 5616 5617 5618

	spin_lock_bh(&ar->data_lock);
	ar->scan.roc_notify = false;
	spin_unlock_bh(&ar->data_lock);

5619
	ath10k_scan_abort(ar);
5620

5621 5622
	mutex_unlock(&ar->conf_mutex);

5623 5624
	cancel_delayed_work_sync(&ar->scan.timeout);

5625 5626 5627 5628 5629 5630 5631 5632
	return 0;
}

/*
 * Both RTS and Fragmentation threshold are interface-specific
 * in ath10k, but device-specific in mac80211.
 */

5633 5634 5635 5636 5637
static int ath10k_set_rts_threshold(struct ieee80211_hw *hw, u32 value)
{
	struct ath10k *ar = hw->priv;
	struct ath10k_vif *arvif;
	int ret = 0;
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5638

5639
	mutex_lock(&ar->conf_mutex);
5640
	list_for_each_entry(arvif, &ar->arvifs, list) {
5641
		ath10k_dbg(ar, ATH10K_DBG_MAC, "mac vdev %d rts threshold %d\n",
5642 5643 5644 5645
			   arvif->vdev_id, value);

		ret = ath10k_mac_set_rts(arvif, value);
		if (ret) {
5646
			ath10k_warn(ar, "failed to set rts threshold for vdev %d: %d\n",
5647 5648 5649 5650
				    arvif->vdev_id, ret);
			break;
		}
	}
5651 5652
	mutex_unlock(&ar->conf_mutex);

5653
	return ret;
5654 5655
}

5656 5657 5658 5659 5660 5661 5662 5663 5664 5665 5666 5667 5668 5669 5670
static int ath10k_mac_op_set_frag_threshold(struct ieee80211_hw *hw, u32 value)
{
	/* Even though there's a WMI enum for fragmentation threshold no known
	 * firmware actually implements it. Moreover it is not possible to rely
	 * frame fragmentation to mac80211 because firmware clears the "more
	 * fragments" bit in frame control making it impossible for remote
	 * devices to reassemble frames.
	 *
	 * Hence implement a dummy callback just to say fragmentation isn't
	 * supported. This effectively prevents mac80211 from doing frame
	 * fragmentation in software.
	 */
	return -EOPNOTSUPP;
}

5671 5672
static void ath10k_flush(struct ieee80211_hw *hw, struct ieee80211_vif *vif,
			 u32 queues, bool drop)
5673 5674
{
	struct ath10k *ar = hw->priv;
5675
	bool skip;
5676
	long time_left;
5677 5678 5679 5680 5681 5682

	/* mac80211 doesn't care if we really xmit queued frames or not
	 * we'll collect those frames either way if we stop/delete vdevs */
	if (drop)
		return;

Michal Kazior's avatar
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5683 5684
	mutex_lock(&ar->conf_mutex);

5685 5686 5687
	if (ar->state == ATH10K_STATE_WEDGED)
		goto skip;

5688
	time_left = wait_event_timeout(ar->htt.empty_tx_wq, ({
5689
			bool empty;
5690

5691
			spin_lock_bh(&ar->htt.tx_lock);
5692
			empty = (ar->htt.num_pending_tx == 0);
5693
			spin_unlock_bh(&ar->htt.tx_lock);
5694

Michal Kazior's avatar
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5695 5696 5697
			skip = (ar->state == ATH10K_STATE_WEDGED) ||
			       test_bit(ATH10K_FLAG_CRASH_FLUSH,
					&ar->dev_flags);
5698 5699

			(empty || skip);
5700
		}), ATH10K_FLUSH_TIMEOUT_HZ);
5701

5702 5703 5704
	if (time_left == 0 || skip)
		ath10k_warn(ar, "failed to flush transmit queue (skip %i ar-state %i): %ld\n",
			    skip, ar->state, time_left);
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5705

5706
skip:
Michal Kazior's avatar
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5707
	mutex_unlock(&ar->conf_mutex);
5708 5709 5710 5711 5712 5713 5714 5715 5716 5717 5718
}

/* TODO: Implement this function properly
 * For now it is needed to reply to Probe Requests in IBSS mode.
 * Propably we need this information from FW.
 */
static int ath10k_tx_last_beacon(struct ieee80211_hw *hw)
{
	return 1;
}

5719 5720
static void ath10k_reconfig_complete(struct ieee80211_hw *hw,
				     enum ieee80211_reconfig_type reconfig_type)
5721 5722 5723
{
	struct ath10k *ar = hw->priv;

5724 5725 5726
	if (reconfig_type != IEEE80211_RECONFIG_TYPE_RESTART)
		return;

5727 5728 5729 5730 5731
	mutex_lock(&ar->conf_mutex);

	/* If device failed to restart it will be in a different state, e.g.
	 * ATH10K_STATE_WEDGED */
	if (ar->state == ATH10K_STATE_RESTARTED) {
5732
		ath10k_info(ar, "device successfully recovered\n");
5733
		ar->state = ATH10K_STATE_ON;
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5734
		ieee80211_wake_queues(ar->hw);
5735 5736 5737 5738 5739
	}

	mutex_unlock(&ar->conf_mutex);
}

5740 5741 5742 5743 5744 5745 5746 5747 5748 5749 5750 5751 5752 5753 5754 5755 5756 5757 5758 5759 5760 5761 5762 5763 5764 5765 5766 5767 5768 5769
static int ath10k_get_survey(struct ieee80211_hw *hw, int idx,
			     struct survey_info *survey)
{
	struct ath10k *ar = hw->priv;
	struct ieee80211_supported_band *sband;
	struct survey_info *ar_survey = &ar->survey[idx];
	int ret = 0;

	mutex_lock(&ar->conf_mutex);

	sband = hw->wiphy->bands[IEEE80211_BAND_2GHZ];
	if (sband && idx >= sband->n_channels) {
		idx -= sband->n_channels;
		sband = NULL;
	}

	if (!sband)
		sband = hw->wiphy->bands[IEEE80211_BAND_5GHZ];

	if (!sband || idx >= sband->n_channels) {
		ret = -ENOENT;
		goto exit;
	}

	spin_lock_bh(&ar->data_lock);
	memcpy(survey, ar_survey, sizeof(*survey));
	spin_unlock_bh(&ar->data_lock);

	survey->channel = &sband->channels[idx];

5770 5771 5772
	if (ar->rx_channel == survey->channel)
		survey->filled |= SURVEY_INFO_IN_USE;

5773 5774 5775 5776 5777
exit:
	mutex_unlock(&ar->conf_mutex);
	return ret;
}

5778
static bool
5779 5780 5781
ath10k_mac_bitrate_mask_has_single_rate(struct ath10k *ar,
					enum ieee80211_band band,
					const struct cfg80211_bitrate_mask *mask)
5782
{
5783 5784
	int num_rates = 0;
	int i;
5785

5786
	num_rates += hweight32(mask->control[band].legacy);
5787

5788 5789
	for (i = 0; i < ARRAY_SIZE(mask->control[band].ht_mcs); i++)
		num_rates += hweight8(mask->control[band].ht_mcs[i]);
5790

5791 5792
	for (i = 0; i < ARRAY_SIZE(mask->control[band].vht_mcs); i++)
		num_rates += hweight16(mask->control[band].vht_mcs[i]);
5793

5794
	return num_rates == 1;
5795 5796 5797
}

static bool
5798 5799 5800 5801 5802 5803 5804 5805 5806 5807
ath10k_mac_bitrate_mask_get_single_nss(struct ath10k *ar,
				       enum ieee80211_band band,
				       const struct cfg80211_bitrate_mask *mask,
				       int *nss)
{
	struct ieee80211_supported_band *sband = &ar->mac.sbands[band];
	u16 vht_mcs_map = le16_to_cpu(sband->vht_cap.vht_mcs.tx_mcs_map);
	u8 ht_nss_mask = 0;
	u8 vht_nss_mask = 0;
	int i;
5808

5809
	if (mask->control[band].legacy)
5810 5811
		return false;

5812 5813
	for (i = 0; i < ARRAY_SIZE(mask->control[band].ht_mcs); i++) {
		if (mask->control[band].ht_mcs[i] == 0)
5814
			continue;
5815 5816 5817 5818 5819
		else if (mask->control[band].ht_mcs[i] ==
			 sband->ht_cap.mcs.rx_mask[i])
			ht_nss_mask |= BIT(i);
		else
			return false;
5820 5821
	}

5822 5823
	for (i = 0; i < ARRAY_SIZE(mask->control[band].vht_mcs); i++) {
		if (mask->control[band].vht_mcs[i] == 0)
5824
			continue;
5825 5826 5827 5828 5829
		else if (mask->control[band].vht_mcs[i] ==
			 ath10k_mac_get_max_vht_mcs_map(vht_mcs_map, i))
			vht_nss_mask |= BIT(i);
		else
			return false;
5830 5831
	}

5832
	if (ht_nss_mask != vht_nss_mask)
5833 5834
		return false;

5835
	if (ht_nss_mask == 0)
5836 5837
		return false;

5838
	if (BIT(fls(ht_nss_mask)) - 1 != ht_nss_mask)
5839 5840
		return false;

5841
	*nss = fls(ht_nss_mask);
5842 5843 5844 5845

	return true;
}

5846 5847 5848 5849 5850
static int
ath10k_mac_bitrate_mask_get_single_rate(struct ath10k *ar,
					enum ieee80211_band band,
					const struct cfg80211_bitrate_mask *mask,
					u8 *rate, u8 *nss)
5851
{
5852 5853 5854 5855 5856 5857
	struct ieee80211_supported_band *sband = &ar->mac.sbands[band];
	int rate_idx;
	int i;
	u16 bitrate;
	u8 preamble;
	u8 hw_rate;
5858

5859 5860
	if (hweight32(mask->control[band].legacy) == 1) {
		rate_idx = ffs(mask->control[band].legacy) - 1;
5861

5862 5863
		hw_rate = sband->bitrates[rate_idx].hw_value;
		bitrate = sband->bitrates[rate_idx].bitrate;
5864

5865 5866 5867 5868
		if (ath10k_mac_bitrate_is_cck(bitrate))
			preamble = WMI_RATE_PREAMBLE_CCK;
		else
			preamble = WMI_RATE_PREAMBLE_OFDM;
5869

5870 5871 5872 5873
		*nss = 1;
		*rate = preamble << 6 |
			(*nss - 1) << 4 |
			hw_rate << 0;
5874

5875
		return 0;
5876 5877
	}

5878 5879 5880 5881 5882 5883
	for (i = 0; i < ARRAY_SIZE(mask->control[band].ht_mcs); i++) {
		if (hweight8(mask->control[band].ht_mcs[i]) == 1) {
			*nss = i + 1;
			*rate = WMI_RATE_PREAMBLE_HT << 6 |
				(*nss - 1) << 4 |
				(ffs(mask->control[band].ht_mcs[i]) - 1);
5884

5885 5886 5887
			return 0;
		}
	}
5888

5889 5890 5891 5892 5893 5894
	for (i = 0; i < ARRAY_SIZE(mask->control[band].vht_mcs); i++) {
		if (hweight16(mask->control[band].vht_mcs[i]) == 1) {
			*nss = i + 1;
			*rate = WMI_RATE_PREAMBLE_VHT << 6 |
				(*nss - 1) << 4 |
				(ffs(mask->control[band].vht_mcs[i]) - 1);
5895

5896 5897 5898
			return 0;
		}
	}
5899

5900
	return -EINVAL;
5901 5902
}

5903 5904
static int ath10k_mac_set_fixed_rate_params(struct ath10k_vif *arvif,
					    u8 rate, u8 nss, u8 sgi)
5905 5906 5907
{
	struct ath10k *ar = arvif->ar;
	u32 vdev_param;
5908
	int ret;
5909

5910
	lockdep_assert_held(&ar->conf_mutex);
5911

5912 5913
	ath10k_dbg(ar, ATH10K_DBG_MAC, "mac set fixed rate params vdev %i rate 0x%02hhx nss %hhu sgi %hhu\n",
		   arvif->vdev_id, rate, nss, sgi);
5914

5915
	vdev_param = ar->wmi.vdev_param->fixed_rate;
5916
	ret = ath10k_wmi_vdev_set_param(ar, arvif->vdev_id, vdev_param, rate);
5917
	if (ret) {
5918
		ath10k_warn(ar, "failed to set fixed rate param 0x%02x: %d\n",
5919 5920
			    rate, ret);
		return ret;
5921 5922 5923
	}

	vdev_param = ar->wmi.vdev_param->nss;
5924
	ret = ath10k_wmi_vdev_set_param(ar, arvif->vdev_id, vdev_param, nss);
5925
	if (ret) {
5926 5927
		ath10k_warn(ar, "failed to set nss param %d: %d\n", nss, ret);
		return ret;
5928 5929
	}

5930
	vdev_param = ar->wmi.vdev_param->sgi;
5931
	ret = ath10k_wmi_vdev_set_param(ar, arvif->vdev_id, vdev_param, sgi);
5932
	if (ret) {
5933 5934
		ath10k_warn(ar, "failed to set sgi param %d: %d\n", sgi, ret);
		return ret;
5935 5936
	}

5937
	return 0;
5938 5939
}

5940 5941 5942 5943 5944 5945 5946
static bool
ath10k_mac_can_set_bitrate_mask(struct ath10k *ar,
				enum ieee80211_band band,
				const struct cfg80211_bitrate_mask *mask)
{
	int i;
	u16 vht_mcs;
5947

5948 5949 5950 5951 5952 5953 5954 5955 5956 5957 5958 5959 5960 5961 5962 5963 5964
	/* Due to firmware limitation in WMI_PEER_ASSOC_CMDID it is impossible
	 * to express all VHT MCS rate masks. Effectively only the following
	 * ranges can be used: none, 0-7, 0-8 and 0-9.
	 */
	for (i = 0; i < NL80211_VHT_NSS_MAX; i++) {
		vht_mcs = mask->control[band].vht_mcs[i];

		switch (vht_mcs) {
		case 0:
		case BIT(8) - 1:
		case BIT(9) - 1:
		case BIT(10) - 1:
			break;
		default:
			ath10k_warn(ar, "refusing bitrate mask with missing 0-7 VHT MCS rates\n");
			return false;
		}
5965 5966
	}

5967 5968
	return true;
}
5969

5970 5971 5972 5973 5974 5975 5976 5977 5978 5979 5980 5981 5982 5983 5984
static void ath10k_mac_set_bitrate_mask_iter(void *data,
					     struct ieee80211_sta *sta)
{
	struct ath10k_vif *arvif = data;
	struct ath10k_sta *arsta = (struct ath10k_sta *)sta->drv_priv;
	struct ath10k *ar = arvif->ar;

	if (arsta->arvif != arvif)
		return;

	spin_lock_bh(&ar->data_lock);
	arsta->changed |= IEEE80211_RC_SUPP_RATES_CHANGED;
	spin_unlock_bh(&ar->data_lock);

	ieee80211_queue_work(ar->hw, &arsta->update_wk);
5985 5986
}

5987 5988 5989
static int ath10k_mac_op_set_bitrate_mask(struct ieee80211_hw *hw,
					  struct ieee80211_vif *vif,
					  const struct cfg80211_bitrate_mask *mask)
5990 5991
{
	struct ath10k_vif *arvif = ath10k_vif_to_arvif(vif);
5992
	struct cfg80211_chan_def def;
5993
	struct ath10k *ar = arvif->ar;
5994
	enum ieee80211_band band;
5995 5996
	const u8 *ht_mcs_mask;
	const u16 *vht_mcs_mask;
5997 5998 5999 6000 6001
	u8 rate;
	u8 nss;
	u8 sgi;
	int single_nss;
	int ret;
6002

6003 6004
	if (ath10k_mac_vif_chan(vif, &def))
		return -EPERM;
6005

6006
	band = def.chan->band;
6007 6008
	ht_mcs_mask = mask->control[band].ht_mcs;
	vht_mcs_mask = mask->control[band].vht_mcs;
6009

6010 6011
	sgi = mask->control[band].gi;
	if (sgi == NL80211_TXRATE_FORCE_LGI)
6012
		return -EINVAL;
6013

6014 6015 6016 6017 6018 6019 6020 6021 6022 6023 6024 6025 6026 6027
	if (ath10k_mac_bitrate_mask_has_single_rate(ar, band, mask)) {
		ret = ath10k_mac_bitrate_mask_get_single_rate(ar, band, mask,
							      &rate, &nss);
		if (ret) {
			ath10k_warn(ar, "failed to get single rate for vdev %i: %d\n",
				    arvif->vdev_id, ret);
			return ret;
		}
	} else if (ath10k_mac_bitrate_mask_get_single_nss(ar, band, mask,
							  &single_nss)) {
		rate = WMI_FIXED_RATE_NONE;
		nss = single_nss;
	} else {
		rate = WMI_FIXED_RATE_NONE;
6028 6029 6030 6031 6032
		nss = min(ar->num_rf_chains,
			  max(ath10k_mac_max_ht_nss(ht_mcs_mask),
			      ath10k_mac_max_vht_nss(vht_mcs_mask)));

		if (!ath10k_mac_can_set_bitrate_mask(ar, band, mask))
6033
			return -EINVAL;
6034 6035 6036 6037 6038 6039 6040 6041 6042

		mutex_lock(&ar->conf_mutex);

		arvif->bitrate_mask = *mask;
		ieee80211_iterate_stations_atomic(ar->hw,
						  ath10k_mac_set_bitrate_mask_iter,
						  arvif);

		mutex_unlock(&ar->conf_mutex);
6043 6044
	}

6045 6046 6047 6048 6049 6050 6051
	mutex_lock(&ar->conf_mutex);

	ret = ath10k_mac_set_fixed_rate_params(arvif, rate, nss, sgi);
	if (ret) {
		ath10k_warn(ar, "failed to set fixed rate params on vdev %i: %d\n",
			    arvif->vdev_id, ret);
		goto exit;
6052 6053
	}

6054 6055 6056 6057
exit:
	mutex_unlock(&ar->conf_mutex);

	return ret;
6058 6059
}

6060 6061 6062 6063 6064 6065 6066 6067 6068 6069 6070
static void ath10k_sta_rc_update(struct ieee80211_hw *hw,
				 struct ieee80211_vif *vif,
				 struct ieee80211_sta *sta,
				 u32 changed)
{
	struct ath10k *ar = hw->priv;
	struct ath10k_sta *arsta = (struct ath10k_sta *)sta->drv_priv;
	u32 bw, smps;

	spin_lock_bh(&ar->data_lock);

6071
	ath10k_dbg(ar, ATH10K_DBG_MAC,
6072 6073 6074 6075 6076 6077 6078 6079 6080 6081 6082 6083 6084 6085 6086 6087 6088 6089
		   "mac sta rc update for %pM changed %08x bw %d nss %d smps %d\n",
		   sta->addr, changed, sta->bandwidth, sta->rx_nss,
		   sta->smps_mode);

	if (changed & IEEE80211_RC_BW_CHANGED) {
		bw = WMI_PEER_CHWIDTH_20MHZ;

		switch (sta->bandwidth) {
		case IEEE80211_STA_RX_BW_20:
			bw = WMI_PEER_CHWIDTH_20MHZ;
			break;
		case IEEE80211_STA_RX_BW_40:
			bw = WMI_PEER_CHWIDTH_40MHZ;
			break;
		case IEEE80211_STA_RX_BW_80:
			bw = WMI_PEER_CHWIDTH_80MHZ;
			break;
		case IEEE80211_STA_RX_BW_160:
6090
			ath10k_warn(ar, "Invalid bandwidth %d in rc update for %pM\n",
6091
				    sta->bandwidth, sta->addr);
6092 6093 6094 6095 6096 6097 6098 6099 6100 6101 6102 6103 6104 6105 6106 6107 6108 6109 6110 6111 6112 6113 6114 6115 6116
			bw = WMI_PEER_CHWIDTH_20MHZ;
			break;
		}

		arsta->bw = bw;
	}

	if (changed & IEEE80211_RC_NSS_CHANGED)
		arsta->nss = sta->rx_nss;

	if (changed & IEEE80211_RC_SMPS_CHANGED) {
		smps = WMI_PEER_SMPS_PS_NONE;

		switch (sta->smps_mode) {
		case IEEE80211_SMPS_AUTOMATIC:
		case IEEE80211_SMPS_OFF:
			smps = WMI_PEER_SMPS_PS_NONE;
			break;
		case IEEE80211_SMPS_STATIC:
			smps = WMI_PEER_SMPS_STATIC;
			break;
		case IEEE80211_SMPS_DYNAMIC:
			smps = WMI_PEER_SMPS_DYNAMIC;
			break;
		case IEEE80211_SMPS_NUM_MODES:
6117
			ath10k_warn(ar, "Invalid smps %d in sta rc update for %pM\n",
6118
				    sta->smps_mode, sta->addr);
6119 6120 6121 6122 6123 6124 6125 6126 6127 6128 6129 6130 6131 6132
			smps = WMI_PEER_SMPS_PS_NONE;
			break;
		}

		arsta->smps = smps;
	}

	arsta->changed |= changed;

	spin_unlock_bh(&ar->data_lock);

	ieee80211_queue_work(hw, &arsta->update_wk);
}

6133 6134 6135 6136 6137 6138 6139 6140 6141 6142
static u64 ath10k_get_tsf(struct ieee80211_hw *hw, struct ieee80211_vif *vif)
{
	/*
	 * FIXME: Return 0 for time being. Need to figure out whether FW
	 * has the API to fetch 64-bit local TSF
	 */

	return 0;
}

6143 6144 6145 6146 6147 6148
static int ath10k_ampdu_action(struct ieee80211_hw *hw,
			       struct ieee80211_vif *vif,
			       enum ieee80211_ampdu_mlme_action action,
			       struct ieee80211_sta *sta, u16 tid, u16 *ssn,
			       u8 buf_size)
{
6149
	struct ath10k *ar = hw->priv;
6150 6151
	struct ath10k_vif *arvif = ath10k_vif_to_arvif(vif);

6152
	ath10k_dbg(ar, ATH10K_DBG_MAC, "mac ampdu vdev_id %i sta %pM tid %hu action %d\n",
6153 6154 6155 6156 6157 6158 6159 6160 6161 6162 6163 6164 6165 6166 6167 6168 6169 6170 6171 6172 6173 6174 6175
		   arvif->vdev_id, sta->addr, tid, action);

	switch (action) {
	case IEEE80211_AMPDU_RX_START:
	case IEEE80211_AMPDU_RX_STOP:
		/* HTT AddBa/DelBa events trigger mac80211 Rx BA session
		 * creation/removal. Do we need to verify this?
		 */
		return 0;
	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:
		/* Firmware offloads Tx aggregation entirely so deny mac80211
		 * Tx aggregation requests.
		 */
		return -EOPNOTSUPP;
	}

	return -EINVAL;
}

6176
static void
6177 6178 6179 6180
ath10k_mac_update_rx_channel(struct ath10k *ar,
			     struct ieee80211_chanctx_conf *ctx,
			     struct ieee80211_vif_chanctx_switch *vifs,
			     int n_vifs)
6181 6182 6183 6184 6185 6186 6187 6188 6189
{
	struct cfg80211_chan_def *def = NULL;

	/* Both locks are required because ar->rx_channel is modified. This
	 * allows readers to hold either lock.
	 */
	lockdep_assert_held(&ar->conf_mutex);
	lockdep_assert_held(&ar->data_lock);

6190 6191 6192
	WARN_ON(ctx && vifs);
	WARN_ON(vifs && n_vifs != 1);

6193 6194 6195 6196 6197 6198 6199 6200 6201 6202 6203
	/* FIXME: Sort of an optimization and a workaround. Peers and vifs are
	 * on a linked list now. Doing a lookup peer -> vif -> chanctx for each
	 * ppdu on Rx may reduce performance on low-end systems. It should be
	 * possible to make tables/hashmaps to speed the lookup up (be vary of
	 * cpu data cache lines though regarding sizes) but to keep the initial
	 * implementation simple and less intrusive fallback to the slow lookup
	 * only for multi-channel cases. Single-channel cases will remain to
	 * use the old channel derival and thus performance should not be
	 * affected much.
	 */
	rcu_read_lock();
6204
	if (!ctx && ath10k_mac_num_chanctxs(ar) == 1) {
6205 6206 6207
		ieee80211_iter_chan_contexts_atomic(ar->hw,
					ath10k_mac_get_any_chandef_iter,
					&def);
6208 6209 6210 6211

		if (vifs)
			def = &vifs[0].new_ctx->def;

6212
		ar->rx_channel = def->chan;
6213 6214
	} else if (ctx && ath10k_mac_num_chanctxs(ar) == 0) {
		ar->rx_channel = ctx->def.chan;
6215 6216 6217 6218 6219 6220 6221 6222 6223 6224 6225 6226 6227 6228 6229 6230 6231 6232 6233
	} else {
		ar->rx_channel = NULL;
	}
	rcu_read_unlock();
}

static int
ath10k_mac_op_add_chanctx(struct ieee80211_hw *hw,
			  struct ieee80211_chanctx_conf *ctx)
{
	struct ath10k *ar = hw->priv;

	ath10k_dbg(ar, ATH10K_DBG_MAC,
		   "mac chanctx add freq %hu width %d ptr %p\n",
		   ctx->def.chan->center_freq, ctx->def.width, ctx);

	mutex_lock(&ar->conf_mutex);

	spin_lock_bh(&ar->data_lock);
6234
	ath10k_mac_update_rx_channel(ar, ctx, NULL, 0);
6235 6236 6237 6238 6239 6240 6241 6242 6243 6244 6245 6246 6247 6248 6249 6250 6251 6252 6253 6254 6255 6256 6257
	spin_unlock_bh(&ar->data_lock);

	ath10k_recalc_radar_detection(ar);
	ath10k_monitor_recalc(ar);

	mutex_unlock(&ar->conf_mutex);

	return 0;
}

static void
ath10k_mac_op_remove_chanctx(struct ieee80211_hw *hw,
			     struct ieee80211_chanctx_conf *ctx)
{
	struct ath10k *ar = hw->priv;

	ath10k_dbg(ar, ATH10K_DBG_MAC,
		   "mac chanctx remove freq %hu width %d ptr %p\n",
		   ctx->def.chan->center_freq, ctx->def.width, ctx);

	mutex_lock(&ar->conf_mutex);

	spin_lock_bh(&ar->data_lock);
6258
	ath10k_mac_update_rx_channel(ar, NULL, NULL, 0);
6259 6260 6261 6262 6263 6264 6265 6266 6267 6268 6269 6270 6271 6272 6273 6274 6275 6276
	spin_unlock_bh(&ar->data_lock);

	ath10k_recalc_radar_detection(ar);
	ath10k_monitor_recalc(ar);

	mutex_unlock(&ar->conf_mutex);
}

static void
ath10k_mac_op_change_chanctx(struct ieee80211_hw *hw,
			     struct ieee80211_chanctx_conf *ctx,
			     u32 changed)
{
	struct ath10k *ar = hw->priv;

	mutex_lock(&ar->conf_mutex);

	ath10k_dbg(ar, ATH10K_DBG_MAC,
6277 6278
		   "mac chanctx change freq %hu width %d ptr %p changed %x\n",
		   ctx->def.chan->center_freq, ctx->def.width, ctx, changed);
6279 6280 6281 6282 6283 6284 6285 6286 6287 6288 6289 6290 6291 6292 6293 6294 6295 6296 6297 6298 6299 6300 6301 6302 6303 6304 6305 6306 6307 6308 6309 6310 6311 6312 6313 6314 6315 6316 6317 6318

	/* This shouldn't really happen because channel switching should use
	 * switch_vif_chanctx().
	 */
	if (WARN_ON(changed & IEEE80211_CHANCTX_CHANGE_CHANNEL))
		goto unlock;

	ath10k_recalc_radar_detection(ar);

	/* FIXME: How to configure Rx chains properly? */

	/* No other actions are actually necessary. Firmware maintains channel
	 * definitions per vdev internally and there's no host-side channel
	 * context abstraction to configure, e.g. channel width.
	 */

unlock:
	mutex_unlock(&ar->conf_mutex);
}

static int
ath10k_mac_op_assign_vif_chanctx(struct ieee80211_hw *hw,
				 struct ieee80211_vif *vif,
				 struct ieee80211_chanctx_conf *ctx)
{
	struct ath10k *ar = hw->priv;
	struct ath10k_vif *arvif = (void *)vif->drv_priv;
	int ret;

	mutex_lock(&ar->conf_mutex);

	ath10k_dbg(ar, ATH10K_DBG_MAC,
		   "mac chanctx assign ptr %p vdev_id %i\n",
		   ctx, arvif->vdev_id);

	if (WARN_ON(arvif->is_started)) {
		mutex_unlock(&ar->conf_mutex);
		return -EBUSY;
	}

6319
	ret = ath10k_vdev_start(arvif, &ctx->def);
6320 6321 6322
	if (ret) {
		ath10k_warn(ar, "failed to start vdev %i addr %pM on freq %d: %d\n",
			    arvif->vdev_id, vif->addr,
6323
			    ctx->def.chan->center_freq, ret);
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		goto err;
	}

	arvif->is_started = true;

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	ret = ath10k_mac_vif_setup_ps(arvif);
	if (ret) {
		ath10k_warn(ar, "failed to update vdev %i ps: %d\n",
			    arvif->vdev_id, ret);
		goto err_stop;
	}

6336 6337 6338 6339 6340 6341 6342 6343 6344 6345 6346 6347 6348 6349 6350 6351 6352
	if (vif->type == NL80211_IFTYPE_MONITOR) {
		ret = ath10k_wmi_vdev_up(ar, arvif->vdev_id, 0, vif->addr);
		if (ret) {
			ath10k_warn(ar, "failed to up monitor vdev %i: %d\n",
				    arvif->vdev_id, ret);
			goto err_stop;
		}

		arvif->is_up = true;
	}

	mutex_unlock(&ar->conf_mutex);
	return 0;

err_stop:
	ath10k_vdev_stop(arvif);
	arvif->is_started = false;
6353
	ath10k_mac_vif_setup_ps(arvif);
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err:
	mutex_unlock(&ar->conf_mutex);
	return ret;
}

static void
ath10k_mac_op_unassign_vif_chanctx(struct ieee80211_hw *hw,
				   struct ieee80211_vif *vif,
				   struct ieee80211_chanctx_conf *ctx)
{
	struct ath10k *ar = hw->priv;
	struct ath10k_vif *arvif = (void *)vif->drv_priv;
	int ret;

	mutex_lock(&ar->conf_mutex);

	ath10k_dbg(ar, ATH10K_DBG_MAC,
		   "mac chanctx unassign ptr %p vdev_id %i\n",
		   ctx, arvif->vdev_id);

	WARN_ON(!arvif->is_started);

	if (vif->type == NL80211_IFTYPE_MONITOR) {
		WARN_ON(!arvif->is_up);

		ret = ath10k_wmi_vdev_down(ar, arvif->vdev_id);
		if (ret)
			ath10k_warn(ar, "failed to down monitor vdev %i: %d\n",
				    arvif->vdev_id, ret);

		arvif->is_up = false;
	}

	ret = ath10k_vdev_stop(arvif);
	if (ret)
		ath10k_warn(ar, "failed to stop vdev %i: %d\n",
			    arvif->vdev_id, ret);

	arvif->is_started = false;

	mutex_unlock(&ar->conf_mutex);
}

static int
ath10k_mac_op_switch_vif_chanctx(struct ieee80211_hw *hw,
				 struct ieee80211_vif_chanctx_switch *vifs,
				 int n_vifs,
				 enum ieee80211_chanctx_switch_mode mode)
{
	struct ath10k *ar = hw->priv;
	struct ath10k_vif *arvif;
6406
	int ret;
6407 6408 6409 6410 6411 6412 6413 6414
	int i;

	mutex_lock(&ar->conf_mutex);

	ath10k_dbg(ar, ATH10K_DBG_MAC,
		   "mac chanctx switch n_vifs %d mode %d\n",
		   n_vifs, mode);

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	/* First stop monitor interface. Some FW versions crash if there's a
	 * lone monitor interface.
	 */
	if (ar->monitor_started)
		ath10k_monitor_stop(ar);

6421 6422 6423 6424
	for (i = 0; i < n_vifs; i++) {
		arvif = ath10k_vif_to_arvif(vifs[i].vif);

		ath10k_dbg(ar, ATH10K_DBG_MAC,
6425
			   "mac chanctx switch vdev_id %i freq %hu->%hu width %d->%d\n",
6426 6427 6428 6429
			   arvif->vdev_id,
			   vifs[i].old_ctx->def.chan->center_freq,
			   vifs[i].new_ctx->def.chan->center_freq,
			   vifs[i].old_ctx->def.width,
6430
			   vifs[i].new_ctx->def.width);
6431

6432 6433
		if (WARN_ON(!arvif->is_started))
			continue;
6434

6435 6436
		if (WARN_ON(!arvif->is_up))
			continue;
6437

6438 6439 6440 6441 6442 6443
		ret = ath10k_wmi_vdev_down(ar, arvif->vdev_id);
		if (ret) {
			ath10k_warn(ar, "failed to down vdev %d: %d\n",
				    arvif->vdev_id, ret);
			continue;
		}
6444
	}
6445 6446 6447 6448 6449 6450

	/* All relevant vdevs are downed and associated channel resources
	 * should be available for the channel switch now.
	 */

	spin_lock_bh(&ar->data_lock);
6451
	ath10k_mac_update_rx_channel(ar, NULL, vifs, n_vifs);
6452 6453
	spin_unlock_bh(&ar->data_lock);

6454 6455 6456 6457 6458 6459 6460 6461 6462 6463 6464 6465 6466 6467 6468 6469 6470 6471 6472 6473 6474 6475 6476 6477 6478 6479 6480 6481 6482 6483 6484 6485 6486 6487 6488 6489
	for (i = 0; i < n_vifs; i++) {
		arvif = ath10k_vif_to_arvif(vifs[i].vif);

		if (WARN_ON(!arvif->is_started))
			continue;

		if (WARN_ON(!arvif->is_up))
			continue;

		ret = ath10k_mac_setup_bcn_tmpl(arvif);
		if (ret)
			ath10k_warn(ar, "failed to update bcn tmpl during csa: %d\n",
				    ret);

		ret = ath10k_mac_setup_prb_tmpl(arvif);
		if (ret)
			ath10k_warn(ar, "failed to update prb tmpl during csa: %d\n",
				    ret);

		ret = ath10k_vdev_restart(arvif, &vifs[i].new_ctx->def);
		if (ret) {
			ath10k_warn(ar, "failed to restart vdev %d: %d\n",
				    arvif->vdev_id, ret);
			continue;
		}

		ret = ath10k_wmi_vdev_up(arvif->ar, arvif->vdev_id, arvif->aid,
					 arvif->bssid);
		if (ret) {
			ath10k_warn(ar, "failed to bring vdev up %d: %d\n",
				    arvif->vdev_id, ret);
			continue;
		}
	}

	ath10k_monitor_recalc(ar);
6490 6491 6492 6493 6494

	mutex_unlock(&ar->conf_mutex);
	return 0;
}

6495 6496 6497 6498 6499 6500 6501 6502 6503 6504 6505 6506
static const struct ieee80211_ops ath10k_ops = {
	.tx				= ath10k_tx,
	.start				= ath10k_start,
	.stop				= ath10k_stop,
	.config				= ath10k_config,
	.add_interface			= ath10k_add_interface,
	.remove_interface		= ath10k_remove_interface,
	.configure_filter		= ath10k_configure_filter,
	.bss_info_changed		= ath10k_bss_info_changed,
	.hw_scan			= ath10k_hw_scan,
	.cancel_hw_scan			= ath10k_cancel_hw_scan,
	.set_key			= ath10k_set_key,
6507
	.set_default_unicast_key        = ath10k_set_default_unicast_key,
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	.sta_state			= ath10k_sta_state,
	.conf_tx			= ath10k_conf_tx,
	.remain_on_channel		= ath10k_remain_on_channel,
	.cancel_remain_on_channel	= ath10k_cancel_remain_on_channel,
	.set_rts_threshold		= ath10k_set_rts_threshold,
6513
	.set_frag_threshold		= ath10k_mac_op_set_frag_threshold,
6514 6515
	.flush				= ath10k_flush,
	.tx_last_beacon			= ath10k_tx_last_beacon,
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	.set_antenna			= ath10k_set_antenna,
	.get_antenna			= ath10k_get_antenna,
6518
	.reconfig_complete		= ath10k_reconfig_complete,
6519
	.get_survey			= ath10k_get_survey,
6520
	.set_bitrate_mask		= ath10k_mac_op_set_bitrate_mask,
6521
	.sta_rc_update			= ath10k_sta_rc_update,
6522
	.get_tsf			= ath10k_get_tsf,
6523
	.ampdu_action			= ath10k_ampdu_action,
Ben Greear's avatar
Ben Greear committed
6524 6525 6526
	.get_et_sset_count		= ath10k_debug_get_et_sset_count,
	.get_et_stats			= ath10k_debug_get_et_stats,
	.get_et_strings			= ath10k_debug_get_et_strings,
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	.add_chanctx			= ath10k_mac_op_add_chanctx,
	.remove_chanctx			= ath10k_mac_op_remove_chanctx,
	.change_chanctx			= ath10k_mac_op_change_chanctx,
	.assign_vif_chanctx		= ath10k_mac_op_assign_vif_chanctx,
	.unassign_vif_chanctx		= ath10k_mac_op_unassign_vif_chanctx,
	.switch_vif_chanctx		= ath10k_mac_op_switch_vif_chanctx,
Kalle Valo's avatar
Kalle Valo committed
6533 6534 6535

	CFG80211_TESTMODE_CMD(ath10k_tm_cmd)

6536
#ifdef CONFIG_PM
6537 6538
	.suspend			= ath10k_wow_op_suspend,
	.resume				= ath10k_wow_op_resume,
6539
#endif
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#ifdef CONFIG_MAC80211_DEBUGFS
	.sta_add_debugfs		= ath10k_sta_add_debugfs,
#endif
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};

#define CHAN2G(_channel, _freq, _flags) { \
	.band			= IEEE80211_BAND_2GHZ, \
	.hw_value		= (_channel), \
	.center_freq		= (_freq), \
	.flags			= (_flags), \
	.max_antenna_gain	= 0, \
	.max_power		= 30, \
}

#define CHAN5G(_channel, _freq, _flags) { \
	.band			= IEEE80211_BAND_5GHZ, \
	.hw_value		= (_channel), \
	.center_freq		= (_freq), \
	.flags			= (_flags), \
	.max_antenna_gain	= 0, \
	.max_power		= 30, \
}

static const struct ieee80211_channel ath10k_2ghz_channels[] = {
	CHAN2G(1, 2412, 0),
	CHAN2G(2, 2417, 0),
	CHAN2G(3, 2422, 0),
	CHAN2G(4, 2427, 0),
	CHAN2G(5, 2432, 0),
	CHAN2G(6, 2437, 0),
	CHAN2G(7, 2442, 0),
	CHAN2G(8, 2447, 0),
	CHAN2G(9, 2452, 0),
	CHAN2G(10, 2457, 0),
	CHAN2G(11, 2462, 0),
	CHAN2G(12, 2467, 0),
	CHAN2G(13, 2472, 0),
	CHAN2G(14, 2484, 0),
};

static const struct ieee80211_channel ath10k_5ghz_channels[] = {
6581 6582 6583 6584 6585 6586 6587 6588 6589 6590 6591 6592 6593 6594 6595 6596 6597 6598 6599
	CHAN5G(36, 5180, 0),
	CHAN5G(40, 5200, 0),
	CHAN5G(44, 5220, 0),
	CHAN5G(48, 5240, 0),
	CHAN5G(52, 5260, 0),
	CHAN5G(56, 5280, 0),
	CHAN5G(60, 5300, 0),
	CHAN5G(64, 5320, 0),
	CHAN5G(100, 5500, 0),
	CHAN5G(104, 5520, 0),
	CHAN5G(108, 5540, 0),
	CHAN5G(112, 5560, 0),
	CHAN5G(116, 5580, 0),
	CHAN5G(120, 5600, 0),
	CHAN5G(124, 5620, 0),
	CHAN5G(128, 5640, 0),
	CHAN5G(132, 5660, 0),
	CHAN5G(136, 5680, 0),
	CHAN5G(140, 5700, 0),
6600
	CHAN5G(144, 5720, 0),
6601 6602 6603 6604 6605
	CHAN5G(149, 5745, 0),
	CHAN5G(153, 5765, 0),
	CHAN5G(157, 5785, 0),
	CHAN5G(161, 5805, 0),
	CHAN5G(165, 5825, 0),
6606 6607
};

6608
struct ath10k *ath10k_mac_create(size_t priv_size)
6609 6610 6611 6612
{
	struct ieee80211_hw *hw;
	struct ath10k *ar;

6613
	hw = ieee80211_alloc_hw(sizeof(struct ath10k) + priv_size, &ath10k_ops);
6614 6615 6616 6617 6618 6619 6620 6621 6622 6623 6624 6625 6626 6627 6628 6629 6630 6631 6632
	if (!hw)
		return NULL;

	ar = hw->priv;
	ar->hw = hw;

	return ar;
}

void ath10k_mac_destroy(struct ath10k *ar)
{
	ieee80211_free_hw(ar->hw);
}

static const struct ieee80211_iface_limit ath10k_if_limits[] = {
	{
	.max	= 8,
	.types	= BIT(NL80211_IFTYPE_STATION)
		| BIT(NL80211_IFTYPE_P2P_CLIENT)
6633 6634 6635 6636 6637 6638
	},
	{
	.max	= 3,
	.types	= BIT(NL80211_IFTYPE_P2P_GO)
	},
	{
6639 6640 6641 6642
	.max	= 1,
	.types	= BIT(NL80211_IFTYPE_P2P_DEVICE)
	},
	{
6643 6644 6645
	.max	= 7,
	.types	= BIT(NL80211_IFTYPE_AP)
	},
6646 6647
};

6648
static const struct ieee80211_iface_limit ath10k_10x_if_limits[] = {
6649 6650 6651 6652 6653 6654 6655 6656 6657 6658 6659 6660 6661 6662
	{
	.max	= 8,
	.types	= BIT(NL80211_IFTYPE_AP)
	},
};

static const struct ieee80211_iface_combination ath10k_if_comb[] = {
	{
		.limits = ath10k_if_limits,
		.n_limits = ARRAY_SIZE(ath10k_if_limits),
		.max_interfaces = 8,
		.num_different_channels = 1,
		.beacon_int_infra_match = true,
	},
6663 6664 6665
};

static const struct ieee80211_iface_combination ath10k_10x_if_comb[] = {
6666
	{
6667 6668
		.limits = ath10k_10x_if_limits,
		.n_limits = ARRAY_SIZE(ath10k_10x_if_limits),
6669 6670 6671
		.max_interfaces = 8,
		.num_different_channels = 1,
		.beacon_int_infra_match = true,
6672
#ifdef CONFIG_ATH10K_DFS_CERTIFIED
6673 6674 6675 6676 6677
		.radar_detect_widths =	BIT(NL80211_CHAN_WIDTH_20_NOHT) |
					BIT(NL80211_CHAN_WIDTH_20) |
					BIT(NL80211_CHAN_WIDTH_40) |
					BIT(NL80211_CHAN_WIDTH_80),
#endif
6678
	},
6679 6680
};

6681 6682 6683
static const struct ieee80211_iface_limit ath10k_tlv_if_limit[] = {
	{
		.max = 2,
6684 6685 6686 6687 6688
		.types = BIT(NL80211_IFTYPE_STATION),
	},
	{
		.max = 2,
		.types = BIT(NL80211_IFTYPE_AP) |
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			 BIT(NL80211_IFTYPE_P2P_CLIENT) |
			 BIT(NL80211_IFTYPE_P2P_GO),
	},
	{
		.max = 1,
		.types = BIT(NL80211_IFTYPE_P2P_DEVICE),
	},
};

6698 6699 6700 6701 6702 6703 6704 6705 6706 6707 6708 6709 6710 6711 6712 6713 6714 6715 6716 6717
static const struct ieee80211_iface_limit ath10k_tlv_qcs_if_limit[] = {
	{
		.max = 2,
		.types = BIT(NL80211_IFTYPE_STATION),
	},
	{
		.max = 2,
		.types = BIT(NL80211_IFTYPE_P2P_CLIENT),
	},
	{
		.max = 1,
		.types = BIT(NL80211_IFTYPE_AP) |
			 BIT(NL80211_IFTYPE_P2P_GO),
	},
	{
		.max = 1,
		.types = BIT(NL80211_IFTYPE_P2P_DEVICE),
	},
};

6718 6719 6720 6721 6722 6723 6724 6725 6726 6727 6728 6729 6730 6731 6732 6733 6734 6735
static const struct ieee80211_iface_limit ath10k_tlv_if_limit_ibss[] = {
	{
		.max = 1,
		.types = BIT(NL80211_IFTYPE_STATION),
	},
	{
		.max = 1,
		.types = BIT(NL80211_IFTYPE_ADHOC),
	},
};

/* FIXME: This is not thouroughly tested. These combinations may over- or
 * underestimate hw/fw capabilities.
 */
static struct ieee80211_iface_combination ath10k_tlv_if_comb[] = {
	{
		.limits = ath10k_tlv_if_limit,
		.num_different_channels = 1,
6736
		.max_interfaces = 4,
6737 6738 6739 6740 6741 6742 6743 6744 6745 6746 6747 6748 6749
		.n_limits = ARRAY_SIZE(ath10k_tlv_if_limit),
	},
	{
		.limits = ath10k_tlv_if_limit_ibss,
		.num_different_channels = 1,
		.max_interfaces = 2,
		.n_limits = ARRAY_SIZE(ath10k_tlv_if_limit_ibss),
	},
};

static struct ieee80211_iface_combination ath10k_tlv_qcs_if_comb[] = {
	{
		.limits = ath10k_tlv_if_limit,
6750 6751
		.num_different_channels = 1,
		.max_interfaces = 4,
6752 6753
		.n_limits = ARRAY_SIZE(ath10k_tlv_if_limit),
	},
6754 6755 6756 6757 6758 6759
	{
		.limits = ath10k_tlv_qcs_if_limit,
		.num_different_channels = 2,
		.max_interfaces = 4,
		.n_limits = ARRAY_SIZE(ath10k_tlv_qcs_if_limit),
	},
6760 6761 6762 6763 6764 6765 6766 6767
	{
		.limits = ath10k_tlv_if_limit_ibss,
		.num_different_channels = 1,
		.max_interfaces = 2,
		.n_limits = ARRAY_SIZE(ath10k_tlv_if_limit_ibss),
	},
};

6768 6769 6770 6771 6772 6773 6774 6775 6776 6777 6778 6779 6780 6781 6782 6783 6784 6785 6786 6787 6788 6789 6790 6791 6792 6793 6794
static const struct ieee80211_iface_limit ath10k_10_4_if_limits[] = {
	{
		.max = 1,
		.types = BIT(NL80211_IFTYPE_STATION),
	},
	{
		.max	= 16,
		.types	= BIT(NL80211_IFTYPE_AP)
	},
};

static const struct ieee80211_iface_combination ath10k_10_4_if_comb[] = {
	{
		.limits = ath10k_10_4_if_limits,
		.n_limits = ARRAY_SIZE(ath10k_10_4_if_limits),
		.max_interfaces = 16,
		.num_different_channels = 1,
		.beacon_int_infra_match = true,
#ifdef CONFIG_ATH10K_DFS_CERTIFIED
		.radar_detect_widths =	BIT(NL80211_CHAN_WIDTH_20_NOHT) |
					BIT(NL80211_CHAN_WIDTH_20) |
					BIT(NL80211_CHAN_WIDTH_40) |
					BIT(NL80211_CHAN_WIDTH_80),
#endif
	},
};

6795 6796 6797 6798
static struct ieee80211_sta_vht_cap ath10k_create_vht_cap(struct ath10k *ar)
{
	struct ieee80211_sta_vht_cap vht_cap = {0};
	u16 mcs_map;
6799
	u32 val;
6800
	int i;
6801 6802 6803 6804

	vht_cap.vht_supported = 1;
	vht_cap.cap = ar->vht_cap_info;

6805 6806 6807 6808 6809 6810 6811 6812 6813 6814 6815 6816 6817 6818 6819 6820 6821 6822
	if (ar->vht_cap_info & (IEEE80211_VHT_CAP_SU_BEAMFORMEE_CAPABLE |
				IEEE80211_VHT_CAP_MU_BEAMFORMEE_CAPABLE)) {
		val = ar->num_rf_chains - 1;
		val <<= IEEE80211_VHT_CAP_BEAMFORMEE_STS_SHIFT;
		val &= IEEE80211_VHT_CAP_BEAMFORMEE_STS_MASK;

		vht_cap.cap |= val;
	}

	if (ar->vht_cap_info & (IEEE80211_VHT_CAP_SU_BEAMFORMER_CAPABLE |
				IEEE80211_VHT_CAP_MU_BEAMFORMER_CAPABLE)) {
		val = ar->num_rf_chains - 1;
		val <<= IEEE80211_VHT_CAP_SOUNDING_DIMENSIONS_SHIFT;
		val &= IEEE80211_VHT_CAP_SOUNDING_DIMENSIONS_MASK;

		vht_cap.cap |= val;
	}

6823 6824 6825 6826 6827 6828 6829
	mcs_map = 0;
	for (i = 0; i < 8; i++) {
		if (i < ar->num_rf_chains)
			mcs_map |= IEEE80211_VHT_MCS_SUPPORT_0_9 << (i*2);
		else
			mcs_map |= IEEE80211_VHT_MCS_NOT_SUPPORTED << (i*2);
	}
6830 6831 6832 6833 6834 6835 6836 6837 6838 6839 6840 6841 6842 6843 6844 6845 6846 6847 6848 6849 6850 6851 6852 6853 6854 6855 6856 6857 6858 6859 6860 6861 6862 6863 6864 6865 6866 6867 6868 6869 6870 6871 6872 6873 6874 6875 6876 6877 6878 6879 6880 6881 6882 6883 6884 6885 6886 6887 6888 6889 6890 6891

	vht_cap.vht_mcs.rx_mcs_map = cpu_to_le16(mcs_map);
	vht_cap.vht_mcs.tx_mcs_map = cpu_to_le16(mcs_map);

	return vht_cap;
}

static struct ieee80211_sta_ht_cap ath10k_get_ht_cap(struct ath10k *ar)
{
	int i;
	struct ieee80211_sta_ht_cap ht_cap = {0};

	if (!(ar->ht_cap_info & WMI_HT_CAP_ENABLED))
		return ht_cap;

	ht_cap.ht_supported = 1;
	ht_cap.ampdu_factor = IEEE80211_HT_MAX_AMPDU_64K;
	ht_cap.ampdu_density = IEEE80211_HT_MPDU_DENSITY_8;
	ht_cap.cap |= IEEE80211_HT_CAP_SUP_WIDTH_20_40;
	ht_cap.cap |= IEEE80211_HT_CAP_DSSSCCK40;
	ht_cap.cap |= WLAN_HT_CAP_SM_PS_STATIC << IEEE80211_HT_CAP_SM_PS_SHIFT;

	if (ar->ht_cap_info & WMI_HT_CAP_HT20_SGI)
		ht_cap.cap |= IEEE80211_HT_CAP_SGI_20;

	if (ar->ht_cap_info & WMI_HT_CAP_HT40_SGI)
		ht_cap.cap |= IEEE80211_HT_CAP_SGI_40;

	if (ar->ht_cap_info & WMI_HT_CAP_DYNAMIC_SMPS) {
		u32 smps;

		smps   = WLAN_HT_CAP_SM_PS_DYNAMIC;
		smps <<= IEEE80211_HT_CAP_SM_PS_SHIFT;

		ht_cap.cap |= smps;
	}

	if (ar->ht_cap_info & WMI_HT_CAP_TX_STBC)
		ht_cap.cap |= IEEE80211_HT_CAP_TX_STBC;

	if (ar->ht_cap_info & WMI_HT_CAP_RX_STBC) {
		u32 stbc;

		stbc   = ar->ht_cap_info;
		stbc  &= WMI_HT_CAP_RX_STBC;
		stbc >>= WMI_HT_CAP_RX_STBC_MASK_SHIFT;
		stbc <<= IEEE80211_HT_CAP_RX_STBC_SHIFT;
		stbc  &= IEEE80211_HT_CAP_RX_STBC;

		ht_cap.cap |= stbc;
	}

	if (ar->ht_cap_info & WMI_HT_CAP_LDPC)
		ht_cap.cap |= IEEE80211_HT_CAP_LDPC_CODING;

	if (ar->ht_cap_info & WMI_HT_CAP_L_SIG_TXOP_PROT)
		ht_cap.cap |= IEEE80211_HT_CAP_LSIG_TXOP_PROT;

	/* max AMSDU is implicitly taken from vht_cap_info */
	if (ar->vht_cap_info & WMI_VHT_CAP_MAX_MPDU_LEN_MASK)
		ht_cap.cap |= IEEE80211_HT_CAP_MAX_AMSDU;

6892
	for (i = 0; i < ar->num_rf_chains; i++)
6893 6894 6895 6896 6897 6898 6899 6900 6901 6902 6903 6904 6905 6906 6907 6908 6909 6910 6911 6912 6913 6914 6915 6916 6917 6918 6919 6920 6921 6922 6923
		ht_cap.mcs.rx_mask[i] = 0xFF;

	ht_cap.mcs.tx_params |= IEEE80211_HT_MCS_TX_DEFINED;

	return ht_cap;
}

static void ath10k_get_arvif_iter(void *data, u8 *mac,
				  struct ieee80211_vif *vif)
{
	struct ath10k_vif_iter *arvif_iter = data;
	struct ath10k_vif *arvif = ath10k_vif_to_arvif(vif);

	if (arvif->vdev_id == arvif_iter->vdev_id)
		arvif_iter->arvif = arvif;
}

struct ath10k_vif *ath10k_get_arvif(struct ath10k *ar, u32 vdev_id)
{
	struct ath10k_vif_iter arvif_iter;
	u32 flags;

	memset(&arvif_iter, 0, sizeof(struct ath10k_vif_iter));
	arvif_iter.vdev_id = vdev_id;

	flags = IEEE80211_IFACE_ITER_RESUME_ALL;
	ieee80211_iterate_active_interfaces_atomic(ar->hw,
						   flags,
						   ath10k_get_arvif_iter,
						   &arvif_iter);
	if (!arvif_iter.arvif) {
6924
		ath10k_warn(ar, "No VIF found for vdev %d\n", vdev_id);
6925 6926 6927 6928 6929 6930 6931 6932
		return NULL;
	}

	return arvif_iter.arvif;
}

int ath10k_mac_register(struct ath10k *ar)
{
6933 6934 6935 6936 6937 6938 6939
	static const u32 cipher_suites[] = {
		WLAN_CIPHER_SUITE_WEP40,
		WLAN_CIPHER_SUITE_WEP104,
		WLAN_CIPHER_SUITE_TKIP,
		WLAN_CIPHER_SUITE_CCMP,
		WLAN_CIPHER_SUITE_AES_CMAC,
	};
6940 6941 6942 6943 6944 6945 6946 6947 6948 6949 6950 6951 6952
	struct ieee80211_supported_band *band;
	struct ieee80211_sta_vht_cap vht_cap;
	struct ieee80211_sta_ht_cap ht_cap;
	void *channels;
	int ret;

	SET_IEEE80211_PERM_ADDR(ar->hw, ar->mac_addr);

	SET_IEEE80211_DEV(ar->hw, ar->dev);

	ht_cap = ath10k_get_ht_cap(ar);
	vht_cap = ath10k_create_vht_cap(ar);

6953 6954 6955 6956
	BUILD_BUG_ON((ARRAY_SIZE(ath10k_2ghz_channels) +
		      ARRAY_SIZE(ath10k_5ghz_channels)) !=
		     ATH10K_NUM_CHANS);

6957 6958 6959 6960
	if (ar->phy_capability & WHAL_WLAN_11G_CAPABILITY) {
		channels = kmemdup(ath10k_2ghz_channels,
				   sizeof(ath10k_2ghz_channels),
				   GFP_KERNEL);
6961 6962 6963 6964
		if (!channels) {
			ret = -ENOMEM;
			goto err_free;
		}
6965 6966 6967 6968 6969 6970 6971 6972

		band = &ar->mac.sbands[IEEE80211_BAND_2GHZ];
		band->n_channels = ARRAY_SIZE(ath10k_2ghz_channels);
		band->channels = channels;
		band->n_bitrates = ath10k_g_rates_size;
		band->bitrates = ath10k_g_rates;
		band->ht_cap = ht_cap;

6973 6974
		/* Enable the VHT support at 2.4 GHz */
		band->vht_cap = vht_cap;
6975 6976 6977 6978 6979 6980 6981 6982 6983

		ar->hw->wiphy->bands[IEEE80211_BAND_2GHZ] = band;
	}

	if (ar->phy_capability & WHAL_WLAN_11A_CAPABILITY) {
		channels = kmemdup(ath10k_5ghz_channels,
				   sizeof(ath10k_5ghz_channels),
				   GFP_KERNEL);
		if (!channels) {
6984 6985
			ret = -ENOMEM;
			goto err_free;
6986 6987 6988 6989 6990 6991 6992 6993 6994 6995 6996 6997 6998 6999
		}

		band = &ar->mac.sbands[IEEE80211_BAND_5GHZ];
		band->n_channels = ARRAY_SIZE(ath10k_5ghz_channels);
		band->channels = channels;
		band->n_bitrates = ath10k_a_rates_size;
		band->bitrates = ath10k_a_rates;
		band->ht_cap = ht_cap;
		band->vht_cap = vht_cap;
		ar->hw->wiphy->bands[IEEE80211_BAND_5GHZ] = band;
	}

	ar->hw->wiphy->interface_modes =
		BIT(NL80211_IFTYPE_STATION) |
7000 7001
		BIT(NL80211_IFTYPE_AP);

7002 7003 7004
	ar->hw->wiphy->available_antennas_rx = ar->supp_rx_chainmask;
	ar->hw->wiphy->available_antennas_tx = ar->supp_tx_chainmask;

7005 7006
	if (!test_bit(ATH10K_FW_FEATURE_NO_P2P, ar->fw_features))
		ar->hw->wiphy->interface_modes |=
7007
			BIT(NL80211_IFTYPE_P2P_DEVICE) |
7008 7009
			BIT(NL80211_IFTYPE_P2P_CLIENT) |
			BIT(NL80211_IFTYPE_P2P_GO);
7010

7011 7012 7013 7014 7015 7016 7017 7018 7019 7020 7021 7022 7023 7024
	ieee80211_hw_set(ar->hw, SIGNAL_DBM);
	ieee80211_hw_set(ar->hw, SUPPORTS_PS);
	ieee80211_hw_set(ar->hw, SUPPORTS_DYNAMIC_PS);
	ieee80211_hw_set(ar->hw, MFP_CAPABLE);
	ieee80211_hw_set(ar->hw, REPORTS_TX_ACK_STATUS);
	ieee80211_hw_set(ar->hw, HAS_RATE_CONTROL);
	ieee80211_hw_set(ar->hw, AP_LINK_PS);
	ieee80211_hw_set(ar->hw, SPECTRUM_MGMT);
	ieee80211_hw_set(ar->hw, SUPPORT_FAST_XMIT);
	ieee80211_hw_set(ar->hw, CONNECTION_MONITOR);
	ieee80211_hw_set(ar->hw, SUPPORTS_PER_STA_GTK);
	ieee80211_hw_set(ar->hw, WANT_MONITOR_VIF);
	ieee80211_hw_set(ar->hw, CHANCTX_STA_CSA);
	ieee80211_hw_set(ar->hw, QUEUE_CONTROL);
7025

7026 7027 7028
	if (!test_bit(ATH10K_FLAG_RAW_MODE, &ar->dev_flags))
		ieee80211_hw_set(ar->hw, SW_CRYPTO_CONTROL);

7029
	ar->hw->wiphy->features |= NL80211_FEATURE_STATIC_SMPS;
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Janusz Dziedzic committed
7030
	ar->hw->wiphy->flags |= WIPHY_FLAG_IBSS_RSN;
7031

7032
	if (ar->ht_cap_info & WMI_HT_CAP_DYNAMIC_SMPS)
7033
		ar->hw->wiphy->features |= NL80211_FEATURE_DYNAMIC_SMPS;
7034 7035

	if (ar->ht_cap_info & WMI_HT_CAP_ENABLED) {
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		ieee80211_hw_set(ar->hw, AMPDU_AGGREGATION);
		ieee80211_hw_set(ar->hw, TX_AMPDU_SETUP_IN_HW);
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	}

	ar->hw->wiphy->max_scan_ssids = WLAN_SCAN_PARAMS_MAX_SSID;
	ar->hw->wiphy->max_scan_ie_len = WLAN_SCAN_PARAMS_MAX_IE_LEN;

	ar->hw->vif_data_size = sizeof(struct ath10k_vif);
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	ar->hw->sta_data_size = sizeof(struct ath10k_sta);
7045 7046 7047

	ar->hw->max_listen_interval = ATH10K_MAX_HW_LISTEN_INTERVAL;

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	if (test_bit(WMI_SERVICE_BEACON_OFFLOAD, ar->wmi.svc_map)) {
		ar->hw->wiphy->flags |= WIPHY_FLAG_AP_PROBE_RESP_OFFLOAD;

		/* Firmware delivers WPS/P2P Probe Requests frames to driver so
		 * that userspace (e.g. wpa_supplicant/hostapd) can generate
		 * correct Probe Responses. This is more of a hack advert..
		 */
		ar->hw->wiphy->probe_resp_offload |=
			NL80211_PROBE_RESP_OFFLOAD_SUPPORT_WPS |
			NL80211_PROBE_RESP_OFFLOAD_SUPPORT_WPS2 |
			NL80211_PROBE_RESP_OFFLOAD_SUPPORT_P2P;
	}

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	if (test_bit(WMI_SERVICE_TDLS, ar->wmi.svc_map))
		ar->hw->wiphy->flags |= WIPHY_FLAG_SUPPORTS_TDLS;

7064
	ar->hw->wiphy->flags |= WIPHY_FLAG_HAS_REMAIN_ON_CHANNEL;
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Michal Kazior committed
7065
	ar->hw->wiphy->flags |= WIPHY_FLAG_HAS_CHANNEL_SWITCH;
7066 7067 7068
	ar->hw->wiphy->max_remain_on_channel_duration = 5000;

	ar->hw->wiphy->flags |= WIPHY_FLAG_AP_UAPSD;
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	ar->hw->wiphy->features |= NL80211_FEATURE_AP_MODE_CHAN_WIDTH_CHANGE;

7071 7072
	ar->hw->wiphy->max_ap_assoc_sta = ar->max_num_stations;

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	ret = ath10k_wow_init(ar);
	if (ret) {
		ath10k_warn(ar, "failed to init wow: %d\n", ret);
		goto err_free;
	}

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	wiphy_ext_feature_set(ar->hw->wiphy, NL80211_EXT_FEATURE_VHT_IBSS);

7081 7082 7083 7084
	/*
	 * on LL hardware queues are managed entirely by the FW
	 * so we only advertise to mac we can do the queues thing
	 */
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	ar->hw->queues = IEEE80211_MAX_QUEUES;

	/* vdev_ids are used as hw queue numbers. Make sure offchan tx queue is
	 * something that vdev_ids can't reach so that we don't stop the queue
	 * accidentally.
	 */
	ar->hw->offchannel_tx_hw_queue = IEEE80211_MAX_QUEUES - 1;
7092

7093 7094
	switch (ar->wmi.op_version) {
	case ATH10K_FW_WMI_OP_VERSION_MAIN:
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		ar->hw->wiphy->iface_combinations = ath10k_if_comb;
		ar->hw->wiphy->n_iface_combinations =
			ARRAY_SIZE(ath10k_if_comb);
7098
		ar->hw->wiphy->interface_modes |= BIT(NL80211_IFTYPE_ADHOC);
7099
		break;
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	case ATH10K_FW_WMI_OP_VERSION_TLV:
		if (test_bit(WMI_SERVICE_ADAPTIVE_OCS, ar->wmi.svc_map)) {
			ar->hw->wiphy->iface_combinations =
				ath10k_tlv_qcs_if_comb;
			ar->hw->wiphy->n_iface_combinations =
				ARRAY_SIZE(ath10k_tlv_qcs_if_comb);
		} else {
			ar->hw->wiphy->iface_combinations = ath10k_tlv_if_comb;
			ar->hw->wiphy->n_iface_combinations =
				ARRAY_SIZE(ath10k_tlv_if_comb);
		}
		ar->hw->wiphy->interface_modes |= BIT(NL80211_IFTYPE_ADHOC);
		break;
7113 7114
	case ATH10K_FW_WMI_OP_VERSION_10_1:
	case ATH10K_FW_WMI_OP_VERSION_10_2:
7115
	case ATH10K_FW_WMI_OP_VERSION_10_2_4:
7116 7117 7118 7119
		ar->hw->wiphy->iface_combinations = ath10k_10x_if_comb;
		ar->hw->wiphy->n_iface_combinations =
			ARRAY_SIZE(ath10k_10x_if_comb);
		break;
7120
	case ATH10K_FW_WMI_OP_VERSION_10_4:
7121 7122 7123
		ar->hw->wiphy->iface_combinations = ath10k_10_4_if_comb;
		ar->hw->wiphy->n_iface_combinations =
			ARRAY_SIZE(ath10k_10_4_if_comb);
7124
		break;
7125 7126 7127 7128 7129
	case ATH10K_FW_WMI_OP_VERSION_UNSET:
	case ATH10K_FW_WMI_OP_VERSION_MAX:
		WARN_ON(1);
		ret = -EINVAL;
		goto err_free;
7130
	}
7131

7132 7133
	if (!test_bit(ATH10K_FLAG_RAW_MODE, &ar->dev_flags))
		ar->hw->netdev_features = NETIF_F_HW_CSUM;
7134

7135 7136 7137 7138 7139 7140 7141
	if (config_enabled(CONFIG_ATH10K_DFS_CERTIFIED)) {
		/* Init ath dfs pattern detector */
		ar->ath_common.debug_mask = ATH_DBG_DFS;
		ar->dfs_detector = dfs_pattern_detector_init(&ar->ath_common,
							     NL80211_DFS_UNSET);

		if (!ar->dfs_detector)
7142
			ath10k_warn(ar, "failed to initialise DFS pattern detector\n");
7143 7144
	}

7145 7146 7147
	ret = ath_regd_init(&ar->ath_common.regulatory, ar->hw->wiphy,
			    ath10k_reg_notifier);
	if (ret) {
7148
		ath10k_err(ar, "failed to initialise regulatory: %i\n", ret);
7149
		goto err_free;
7150 7151
	}

7152 7153 7154
	ar->hw->wiphy->cipher_suites = cipher_suites;
	ar->hw->wiphy->n_cipher_suites = ARRAY_SIZE(cipher_suites);

7155 7156
	ret = ieee80211_register_hw(ar->hw);
	if (ret) {
7157
		ath10k_err(ar, "failed to register ieee80211: %d\n", ret);
7158
		goto err_free;
7159 7160 7161 7162 7163 7164
	}

	if (!ath_is_world_regd(&ar->ath_common.regulatory)) {
		ret = regulatory_hint(ar->hw->wiphy,
				      ar->ath_common.regulatory.alpha2);
		if (ret)
7165
			goto err_unregister;
7166 7167 7168
	}

	return 0;
7169 7170

err_unregister:
7171
	ieee80211_unregister_hw(ar->hw);
7172 7173 7174 7175
err_free:
	kfree(ar->mac.sbands[IEEE80211_BAND_2GHZ].channels);
	kfree(ar->mac.sbands[IEEE80211_BAND_5GHZ].channels);

7176 7177 7178 7179 7180 7181 7182
	return ret;
}

void ath10k_mac_unregister(struct ath10k *ar)
{
	ieee80211_unregister_hw(ar->hw);

7183 7184 7185
	if (config_enabled(CONFIG_ATH10K_DFS_CERTIFIED) && ar->dfs_detector)
		ar->dfs_detector->exit(ar->dfs_detector);

7186 7187 7188 7189 7190
	kfree(ar->mac.sbands[IEEE80211_BAND_2GHZ].channels);
	kfree(ar->mac.sbands[IEEE80211_BAND_5GHZ].channels);

	SET_IEEE80211_DEV(ar->hw, NULL);
}