mac.c 208.0 KB
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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 <linux/acpi.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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static struct ieee80211_rate ath10k_rates_rev2[] = {
	{ .bitrate = 10,
	  .hw_value = ATH10K_HW_RATE_REV2_CCK_LP_1M },
	{ .bitrate = 20,
	  .hw_value = ATH10K_HW_RATE_REV2_CCK_LP_2M,
	  .hw_value_short = ATH10K_HW_RATE_REV2_CCK_SP_2M,
	  .flags = IEEE80211_RATE_SHORT_PREAMBLE },
	{ .bitrate = 55,
	  .hw_value = ATH10K_HW_RATE_REV2_CCK_LP_5_5M,
	  .hw_value_short = ATH10K_HW_RATE_REV2_CCK_SP_5_5M,
	  .flags = IEEE80211_RATE_SHORT_PREAMBLE },
	{ .bitrate = 110,
	  .hw_value = ATH10K_HW_RATE_REV2_CCK_LP_11M,
	  .hw_value_short = ATH10K_HW_RATE_REV2_CCK_SP_11M,
	  .flags = IEEE80211_RATE_SHORT_PREAMBLE },

	{ .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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#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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#define ath10k_g_rates_rev2 (ath10k_rates_rev2 + 0)
#define ath10k_g_rates_rev2_size (ARRAY_SIZE(ath10k_rates_rev2))

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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,
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			     u8 hw_rate, bool cck)
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{
	const struct ieee80211_rate *rate;
	int i;

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

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		if (ath10k_mac_bitrate_is_cck(rate->bitrate) != cck)
			continue;

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		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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int ath10k_mac_ext_resource_config(struct ath10k *ar, u32 val)
{
	enum wmi_host_platform_type platform_type;
	int ret;

	if (test_bit(WMI_SERVICE_TX_MODE_DYNAMIC, ar->wmi.svc_map))
		platform_type = WMI_HOST_PLATFORM_LOW_PERF;
	else
		platform_type = WMI_HOST_PLATFORM_HIGH_PERF;

	ret = ath10k_wmi_ext_resource_config(ar, platform_type, val);

	if (ret && ret != -EOPNOTSUPP) {
		ath10k_warn(ar, "failed to configure ext resource: %d\n", ret);
		return ret;
	}

	return 0;
}

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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))
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		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 &&
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		    arvif->vif->type != NL80211_IFTYPE_ADHOC &&
		    arvif->vif->type != NL80211_IFTYPE_MESH_POINT))
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		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) {
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		if (ether_addr_equal(peer->addr, arvif->vif->addr))
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			continue;

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		if (ether_addr_equal(peer->addr, arvif->bssid))
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			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) {
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	case NL80211_BAND_2GHZ:
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		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;
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	case NL80211_BAND_5GHZ:
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		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_160:
			phymode = MODE_11AC_VHT160;
			break;
		case NL80211_CHAN_WIDTH_80P80:
			phymode = MODE_11AC_VHT80_80;
			break;
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		case NL80211_CHAN_WIDTH_5:
		case NL80211_CHAN_WIDTH_10:
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			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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627 628 629 630 631 632 633 634 635 636 637 638 639 640 641 642 643 644 645 646 647 648 649 650 651 652 653 654 655 656 657 658 659 660 661 662 663 664 665 666 667 668 669 670 671 672 673 674
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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675 676 677 678 679
static int ath10k_peer_create(struct ath10k *ar,
			      struct ieee80211_vif *vif,
			      struct ieee80211_sta *sta,
			      u32 vdev_id,
			      const u8 *addr,
680
			      enum wmi_peer_type peer_type)
681
{
682
	struct ath10k_vif *arvif;
M
Michal Kazior 已提交
683
	struct ath10k_peer *peer;
684
	int num_peers = 0;
685 686 687 688
	int ret;

	lockdep_assert_held(&ar->conf_mutex);

689 690 691 692 693 694 695
	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)
696 697
		return -ENOBUFS;

698
	ret = ath10k_wmi_peer_create(ar, vdev_id, addr, peer_type);
699
	if (ret) {
700
		ath10k_warn(ar, "failed to create wmi peer %pM on vdev %i: %i\n",
701
			    addr, vdev_id, ret);
702
		return ret;
703
	}
704 705

	ret = ath10k_wait_for_peer_created(ar, vdev_id, addr);
706
	if (ret) {
707
		ath10k_warn(ar, "failed to wait for created wmi peer %pM on vdev %i: %i\n",
708
			    addr, vdev_id, ret);
709
		return ret;
710
	}
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	spin_lock_bh(&ar->data_lock);

	peer = ath10k_peer_find(ar, vdev_id, addr);
	if (!peer) {
716
		spin_unlock_bh(&ar->data_lock);
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Michal Kazior 已提交
717 718 719 720 721 722 723 724 725 726 727
		ath10k_warn(ar, "failed to find peer %pM on vdev %i after creation\n",
			    addr, vdev_id);
		ath10k_wmi_peer_delete(ar, vdev_id, addr);
		return -ENOENT;
	}

	peer->vif = vif;
	peer->sta = sta;

	spin_unlock_bh(&ar->data_lock);

728
	ar->num_peers++;
729 730 731 732

	return 0;
}

733 734 735 736 737 738 739 740 741 742
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) {
743
		ath10k_warn(ar, "failed to set kickout threshold on vdev %i: %d\n",
744
			    arvif->vdev_id, ret);
745 746 747 748 749 750 751
		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) {
752
		ath10k_warn(ar, "failed to set keepalive minimum idle time on vdev %i: %d\n",
753
			    arvif->vdev_id, ret);
754 755 756 757 758 759 760
		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) {
761
		ath10k_warn(ar, "failed to set keepalive maximum idle time on vdev %i: %d\n",
762
			    arvif->vdev_id, ret);
763 764 765 766 767 768 769
		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) {
770
		ath10k_warn(ar, "failed to set keepalive maximum unresponsive time on vdev %i: %d\n",
771
			    arvif->vdev_id, ret);
772 773 774 775 776 777
		return ret;
	}

	return 0;
}

778
static int ath10k_mac_set_rts(struct ath10k_vif *arvif, u32 value)
779
{
780 781 782 783 784
	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);
785 786
}

787 788 789 790 791 792 793 794 795 796 797 798 799 800
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;

801 802
	ar->num_peers--;

803 804 805 806 807 808
	return 0;
}

static void ath10k_peer_cleanup(struct ath10k *ar, u32 vdev_id)
{
	struct ath10k_peer *peer, *tmp;
M
Michal Kazior 已提交
809
	int peer_id;
810
	int i;
811 812 813 814 815 816 817 818

	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;

819
		ath10k_warn(ar, "removing stale peer %pM from vdev_id %d\n",
820 821
			    peer->addr, vdev_id);

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Michal Kazior 已提交
822 823 824 825 826
		for_each_set_bit(peer_id, peer->peer_ids,
				 ATH10K_MAX_NUM_PEER_IDS) {
			ar->peer_map[peer_id] = NULL;
		}

827 828 829 830 831
		/* Double check that peer is properly un-referenced from
		 * the peer_map
		 */
		for (i = 0; i < ARRAY_SIZE(ar->peer_map); i++) {
			if (ar->peer_map[i] == peer) {
832
				ath10k_warn(ar, "removing stale peer_map entry for %pM (ptr %pK idx %d)\n",
833 834 835 836 837
					    peer->addr, peer, i);
				ar->peer_map[i] = NULL;
			}
		}

838 839
		list_del(&peer->list);
		kfree(peer);
840
		ar->num_peers--;
841 842 843 844
	}
	spin_unlock_bh(&ar->data_lock);
}

845 846 847
static void ath10k_peer_cleanup_all(struct ath10k *ar)
{
	struct ath10k_peer *peer, *tmp;
848
	int i;
849 850 851 852 853 854 855 856

	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);
	}
857 858 859 860

	for (i = 0; i < ARRAY_SIZE(ar->peer_map); i++)
		ar->peer_map[i] = NULL;

861
	spin_unlock_bh(&ar->data_lock);
M
Michal Kazior 已提交
862 863

	ar->num_peers = 0;
864
	ar->num_stations = 0;
865 866
}

867 868 869 870 871 872 873 874 875 876 877 878 879 880 881 882 883 884 885 886 887 888 889 890 891 892 893 894 895 896 897 898
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;
}

899 900 901 902
/************************/
/* Interface management */
/************************/

903 904 905 906 907 908 909 910 911 912 913 914 915
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);

M
Michal Kazior 已提交
916 917 918 919
	if (WARN_ON(arvif->beacon_state != ATH10K_BEACON_SCHEDULED &&
		    arvif->beacon_state != ATH10K_BEACON_SENT))
		return;

920 921 922
	dev_kfree_skb_any(arvif->beacon);

	arvif->beacon = NULL;
M
Michal Kazior 已提交
923
	arvif->beacon_state = ATH10K_BEACON_SCHEDULED;
924 925 926 927 928 929 930 931 932 933 934 935 936 937 938 939 940
}

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;
	}
}

941 942
static inline int ath10k_vdev_setup_sync(struct ath10k *ar)
{
943
	unsigned long time_left;
944

M
Michal Kazior 已提交
945 946
	lockdep_assert_held(&ar->conf_mutex);

M
Michal Kazior 已提交
947 948 949
	if (test_bit(ATH10K_FLAG_CRASH_FLUSH, &ar->dev_flags))
		return -ESHUTDOWN;

950 951 952
	time_left = wait_for_completion_timeout(&ar->vdev_setup_done,
						ATH10K_VDEV_SETUP_TIMEOUT_HZ);
	if (time_left == 0)
953 954 955 956 957
		return -ETIMEDOUT;

	return 0;
}

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Michal Kazior 已提交
958
static int ath10k_monitor_vdev_start(struct ath10k *ar, int vdev_id)
959
{
M
Michal Kazior 已提交
960
	struct cfg80211_chan_def *chandef = NULL;
961
	struct ieee80211_channel *channel = NULL;
962 963 964 965 966
	struct wmi_vdev_start_request_arg arg = {};
	int ret = 0;

	lockdep_assert_held(&ar->conf_mutex);

M
Michal Kazior 已提交
967 968 969 970 971 972 973 974
	ieee80211_iter_chan_contexts_atomic(ar->hw,
					    ath10k_mac_get_any_chandef_iter,
					    &chandef);
	if (WARN_ON_ONCE(!chandef))
		return -ENOENT;

	channel = chandef->chan;

975 976
	arg.vdev_id = vdev_id;
	arg.channel.freq = channel->center_freq;
977
	arg.channel.band_center_freq1 = chandef->center_freq1;
978
	arg.channel.band_center_freq2 = chandef->center_freq2;
979 980 981

	/* TODO setup this dynamically, what in case we
	   don't have any vifs? */
982
	arg.channel.mode = chan_to_phymode(chandef);
983 984
	arg.channel.chan_radar =
			!!(channel->flags & IEEE80211_CHAN_RADAR);
985

986
	arg.channel.min_power = 0;
M
Michal Kazior 已提交
987 988 989
	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;
990

M
Michal Kazior 已提交
991 992
	reinit_completion(&ar->vdev_setup_done);

993 994
	ret = ath10k_wmi_vdev_start(ar, &arg);
	if (ret) {
995
		ath10k_warn(ar, "failed to request monitor vdev %i start: %d\n",
996
			    vdev_id, ret);
997 998 999 1000 1001
		return ret;
	}

	ret = ath10k_vdev_setup_sync(ar);
	if (ret) {
1002
		ath10k_warn(ar, "failed to synchronize setup for monitor vdev %i start: %d\n",
1003
			    vdev_id, ret);
1004 1005 1006 1007 1008
		return ret;
	}

	ret = ath10k_wmi_vdev_up(ar, vdev_id, 0, ar->mac_addr);
	if (ret) {
1009
		ath10k_warn(ar, "failed to put up monitor vdev %i: %d\n",
1010
			    vdev_id, ret);
1011 1012 1013 1014 1015
		goto vdev_stop;
	}

	ar->monitor_vdev_id = vdev_id;

1016
	ath10k_dbg(ar, ATH10K_DBG_MAC, "mac monitor vdev %i started\n",
M
Michal Kazior 已提交
1017
		   ar->monitor_vdev_id);
1018 1019 1020 1021 1022
	return 0;

vdev_stop:
	ret = ath10k_wmi_vdev_stop(ar, ar->monitor_vdev_id);
	if (ret)
1023
		ath10k_warn(ar, "failed to stop monitor vdev %i after start failure: %d\n",
1024
			    ar->monitor_vdev_id, ret);
1025 1026 1027 1028

	return ret;
}

M
Michal Kazior 已提交
1029
static int ath10k_monitor_vdev_stop(struct ath10k *ar)
1030 1031 1032 1033 1034
{
	int ret = 0;

	lockdep_assert_held(&ar->conf_mutex);

1035 1036
	ret = ath10k_wmi_vdev_down(ar, ar->monitor_vdev_id);
	if (ret)
1037
		ath10k_warn(ar, "failed to put down monitor vdev %i: %d\n",
1038
			    ar->monitor_vdev_id, ret);
1039

M
Michal Kazior 已提交
1040 1041
	reinit_completion(&ar->vdev_setup_done);

1042 1043
	ret = ath10k_wmi_vdev_stop(ar, ar->monitor_vdev_id);
	if (ret)
1044
		ath10k_warn(ar, "failed to to request monitor vdev %i stop: %d\n",
1045
			    ar->monitor_vdev_id, ret);
1046 1047 1048

	ret = ath10k_vdev_setup_sync(ar);
	if (ret)
1049
		ath10k_warn(ar, "failed to synchronize monitor vdev %i stop: %d\n",
1050
			    ar->monitor_vdev_id, ret);
1051

1052
	ath10k_dbg(ar, ATH10K_DBG_MAC, "mac monitor vdev %i stopped\n",
M
Michal Kazior 已提交
1053
		   ar->monitor_vdev_id);
1054 1055 1056
	return ret;
}

M
Michal Kazior 已提交
1057
static int ath10k_monitor_vdev_create(struct ath10k *ar)
1058 1059 1060 1061 1062
{
	int bit, ret = 0;

	lockdep_assert_held(&ar->conf_mutex);

B
Ben Greear 已提交
1063
	if (ar->free_vdev_map == 0) {
1064
		ath10k_warn(ar, "failed to find free vdev id for monitor vdev\n");
1065 1066 1067
		return -ENOMEM;
	}

B
Ben Greear 已提交
1068
	bit = __ffs64(ar->free_vdev_map);
B
Ben Greear 已提交
1069

B
Ben Greear 已提交
1070
	ar->monitor_vdev_id = bit;
1071 1072 1073 1074 1075

	ret = ath10k_wmi_vdev_create(ar, ar->monitor_vdev_id,
				     WMI_VDEV_TYPE_MONITOR,
				     0, ar->mac_addr);
	if (ret) {
1076
		ath10k_warn(ar, "failed to request monitor vdev %i creation: %d\n",
1077
			    ar->monitor_vdev_id, ret);
B
Ben Greear 已提交
1078
		return ret;
1079 1080
	}

B
Ben Greear 已提交
1081
	ar->free_vdev_map &= ~(1LL << ar->monitor_vdev_id);
1082
	ath10k_dbg(ar, ATH10K_DBG_MAC, "mac monitor vdev %d created\n",
1083 1084 1085 1086 1087
		   ar->monitor_vdev_id);

	return 0;
}

M
Michal Kazior 已提交
1088
static int ath10k_monitor_vdev_delete(struct ath10k *ar)
1089 1090 1091 1092 1093 1094 1095
{
	int ret = 0;

	lockdep_assert_held(&ar->conf_mutex);

	ret = ath10k_wmi_vdev_delete(ar, ar->monitor_vdev_id);
	if (ret) {
1096
		ath10k_warn(ar, "failed to request wmi monitor vdev %i removal: %d\n",
1097
			    ar->monitor_vdev_id, ret);
1098 1099 1100
		return ret;
	}

B
Ben Greear 已提交
1101
	ar->free_vdev_map |= 1LL << ar->monitor_vdev_id;
1102

1103
	ath10k_dbg(ar, ATH10K_DBG_MAC, "mac monitor vdev %d deleted\n",
1104 1105 1106 1107
		   ar->monitor_vdev_id);
	return ret;
}

M
Michal Kazior 已提交
1108 1109 1110 1111 1112 1113 1114 1115
static int ath10k_monitor_start(struct ath10k *ar)
{
	int ret;

	lockdep_assert_held(&ar->conf_mutex);

	ret = ath10k_monitor_vdev_create(ar);
	if (ret) {
1116
		ath10k_warn(ar, "failed to create monitor vdev: %d\n", ret);
M
Michal Kazior 已提交
1117 1118 1119 1120 1121
		return ret;
	}

	ret = ath10k_monitor_vdev_start(ar, ar->monitor_vdev_id);
	if (ret) {
1122
		ath10k_warn(ar, "failed to start monitor vdev: %d\n", ret);
M
Michal Kazior 已提交
1123 1124 1125 1126 1127
		ath10k_monitor_vdev_delete(ar);
		return ret;
	}

	ar->monitor_started = true;
1128
	ath10k_dbg(ar, ATH10K_DBG_MAC, "mac monitor started\n");
M
Michal Kazior 已提交
1129 1130 1131 1132

	return 0;
}

1133
static int ath10k_monitor_stop(struct ath10k *ar)
M
Michal Kazior 已提交
1134 1135 1136 1137 1138 1139
{
	int ret;

	lockdep_assert_held(&ar->conf_mutex);

	ret = ath10k_monitor_vdev_stop(ar);
1140
	if (ret) {
1141
		ath10k_warn(ar, "failed to stop monitor vdev: %d\n", ret);
1142 1143
		return ret;
	}
M
Michal Kazior 已提交
1144 1145

	ret = ath10k_monitor_vdev_delete(ar);
1146
	if (ret) {
1147
		ath10k_warn(ar, "failed to delete monitor vdev: %d\n", ret);
1148 1149
		return ret;
	}
M
Michal Kazior 已提交
1150 1151

	ar->monitor_started = false;
1152
	ath10k_dbg(ar, ATH10K_DBG_MAC, "mac monitor stopped\n");
1153 1154 1155 1156

	return 0;
}

M
Michal Kazior 已提交
1157 1158 1159 1160 1161 1162 1163 1164 1165 1166 1167 1168 1169 1170 1171 1172 1173 1174
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 ||
1175 1176 1177
	       (!test_bit(ATH10K_FW_FEATURE_ALLOWS_MESH_BCAST,
			  ar->running_fw->fw_file.fw_features) &&
		(ar->filter_flags & FIF_OTHER_BSS)) ||
M
Michal Kazior 已提交
1178 1179 1180 1181 1182 1183 1184 1185 1186 1187 1188 1189 1190 1191 1192 1193 1194 1195 1196
	       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;
}

1197 1198
static int ath10k_monitor_recalc(struct ath10k *ar)
{
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	bool needed;
	bool allowed;
	int ret;
1202 1203 1204

	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);
1207 1208

	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);
1211

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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)
1218 1219
				ath10k_warn(ar, "failed to stop disallowed monitor: %d\n",
					    ret);
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				/* not serious */
		}
1222

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		return -EPERM;
	}
1225

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	if (needed == ar->monitor_started)
1227 1228
		return 0;

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	if (needed)
1230
		return ath10k_monitor_start(ar);
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	else
		return ath10k_monitor_stop(ar);
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}

1235 1236 1237 1238 1239 1240 1241 1242 1243 1244 1245 1246 1247 1248 1249 1250 1251 1252 1253 1254 1255 1256 1257 1258 1259 1260 1261 1262 1263 1264
static bool ath10k_mac_can_set_cts_prot(struct ath10k_vif *arvif)
{
	struct ath10k *ar = arvif->ar;

	lockdep_assert_held(&ar->conf_mutex);

	if (!arvif->is_started) {
		ath10k_dbg(ar, ATH10K_DBG_MAC, "defer cts setup, vdev is not ready yet\n");
		return false;
	}

	return true;
}

static int ath10k_mac_set_cts_prot(struct ath10k_vif *arvif)
{
	struct ath10k *ar = arvif->ar;
	u32 vdev_param;

	lockdep_assert_held(&ar->conf_mutex);

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

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

	return ath10k_wmi_vdev_set_param(ar, arvif->vdev_id, vdev_param,
					 arvif->use_cts_prot ? 1 : 0);
}

1265 1266 1267 1268 1269 1270 1271 1272 1273
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;

1274
	rts_cts |= SM(WMI_RTSCTS_ENABLED, WMI_RTSCTS_SET);
1275 1276 1277 1278

	if (arvif->num_legacy_stations > 0)
		rts_cts |= SM(WMI_RTSCTS_ACROSS_SW_RETRIES,
			      WMI_RTSCTS_PROFILE);
1279 1280 1281
	else
		rts_cts |= SM(WMI_RTSCTS_FOR_SECOND_RATESERIES,
			      WMI_RTSCTS_PROFILE);
1282

1283 1284 1285
	ath10k_dbg(ar, ATH10K_DBG_MAC, "mac vdev %d recalc rts/cts prot %d\n",
		   arvif->vdev_id, rts_cts);

1286 1287 1288 1289
	return ath10k_wmi_vdev_set_param(ar, arvif->vdev_id, vdev_param,
					 rts_cts);
}

1290 1291 1292 1293 1294 1295 1296 1297
static int ath10k_start_cac(struct ath10k *ar)
{
	int ret;

	lockdep_assert_held(&ar->conf_mutex);

	set_bit(ATH10K_CAC_RUNNING, &ar->dev_flags);

1298
	ret = ath10k_monitor_recalc(ar);
1299
	if (ret) {
1300
		ath10k_warn(ar, "failed to start monitor (cac): %d\n", ret);
1301 1302 1303 1304
		clear_bit(ATH10K_CAC_RUNNING, &ar->dev_flags);
		return ret;
	}

1305
	ath10k_dbg(ar, ATH10K_DBG_MAC, "mac cac start monitor vdev %d\n",
1306 1307 1308 1309 1310 1311 1312 1313 1314 1315 1316 1317 1318 1319
		   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);
1321

1322
	ath10k_dbg(ar, ATH10K_DBG_MAC, "mac cac finished\n");
1323 1324 1325 1326

	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;
}

1348
static void ath10k_recalc_radar_detection(struct ath10k *ar)
1349 1350 1351 1352 1353 1354 1355
{
	int ret;

	lockdep_assert_held(&ar->conf_mutex);

	ath10k_stop_cac(ar);

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	if (!ath10k_mac_has_radar_enabled(ar))
1357 1358
		return;

1359
	if (ar->num_started_vdevs > 0)
1360 1361 1362 1363 1364 1365 1366 1367 1368
		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.
		 */
1369
		ath10k_warn(ar, "failed to start CAC: %d\n", ret);
1370 1371 1372 1373
		ieee80211_radar_detected(ar->hw);
	}
}

1374 1375 1376 1377 1378 1379 1380 1381 1382 1383 1384 1385 1386 1387 1388 1389 1390 1391 1392 1393 1394 1395 1396 1397 1398 1399 1400 1401 1402 1403 1404 1405 1406
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;
1425
	arg.channel.band_center_freq2 = chandef->center_freq2;
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	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;
	}

1446
	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));

1451 1452 1453 1454 1455
	if (restart)
		ret = ath10k_wmi_vdev_restart(ar, &arg);
	else
		ret = ath10k_wmi_vdev_start(ar, &arg);

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	if (ret) {
1457
		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) {
1464 1465 1466
		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)
1478
{
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	return ath10k_vdev_start_restart(arvif, def, false);
1480 1481
}

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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;

1496
	if (arvif->vif->type != NL80211_IFTYPE_AP || !arvif->vif->p2p)
1497 1498 1499 1500 1501 1502 1503 1504 1505 1506 1507 1508 1509 1510 1511 1512 1513 1514 1515 1516 1517 1518 1519 1520 1521 1522 1523 1524 1525 1526 1527 1528 1529 1530 1531 1532 1533 1534 1535 1536 1537 1538 1539 1540 1541 1542 1543 1544 1545 1546 1547 1548 1549 1550 1551 1552 1553 1554 1555 1556 1557 1558
		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;

1559 1560 1561 1562
	if (arvif->vdev_type != WMI_VDEV_TYPE_AP &&
	    arvif->vdev_type != WMI_VDEV_TYPE_IBSS)
		return 0;

1563 1564 1565 1566 1567 1568 1569 1570 1571 1572 1573 1574 1575 1576 1577 1578 1579 1580 1581 1582 1583 1584 1585 1586 1587 1588 1589 1590 1591 1592 1593 1594 1595 1596 1597 1598 1599 1600 1601 1602 1603 1604 1605 1606 1607
	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;

1608 1609 1610
	if (arvif->vdev_type != WMI_VDEV_TYPE_AP)
		return 0;

1611 1612 1613 1614 1615 1616 1617 1618 1619 1620 1621 1622 1623 1624 1625 1626 1627 1628
	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;
}

1703
static void ath10k_control_beaconing(struct ath10k_vif *arvif,
1704
				     struct ieee80211_bss_conf *info)
1705
{
1706
	struct ath10k *ar = arvif->ar;
1707 1708
	int ret = 0;

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Michal Kazior 已提交
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	lockdep_assert_held(&arvif->ar->conf_mutex);

1711
	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);
1716 1717 1718

		arvif->is_up = false;

1719
		spin_lock_bh(&arvif->ar->data_lock);
1720
		ath10k_mac_vif_beacon_free(arvif);
1721 1722
		spin_unlock_bh(&arvif->ar->data_lock);

1723 1724 1725 1726 1727
		return;
	}

	arvif->tx_seq_no = 0x1000;

1728
	arvif->aid = 0;
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	ether_addr_copy(arvif->bssid, info->bssid);
1730 1731 1732

	ret = ath10k_wmi_vdev_up(arvif->ar, arvif->vdev_id, arvif->aid,
				 arvif->bssid);
1733
	if (ret) {
1734
		ath10k_warn(ar, "failed to bring up vdev %d: %i\n",
1735
			    arvif->vdev_id, ret);
1736 1737
		return;
	}
1738 1739 1740

	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;
	}

1748
	ath10k_dbg(ar, ATH10K_DBG_MAC, "mac vdev %d up\n", arvif->vdev_id);
1749 1750 1751 1752 1753 1754
}

static void ath10k_control_ibss(struct ath10k_vif *arvif,
				struct ieee80211_bss_conf *info,
				const u8 self_peer[ETH_ALEN])
{
1755
	struct ath10k *ar = arvif->ar;
1756
	u32 vdev_param;
1757 1758
	int ret = 0;

M
Michal Kazior 已提交
1759 1760
	lockdep_assert_held(&arvif->ar->conf_mutex);

1761
	if (!info->ibss_joined) {
1762
		if (is_zero_ether_addr(arvif->bssid))
1763 1764
			return;

1765
		eth_zero_addr(arvif->bssid);
1766 1767 1768 1769

		return;
	}

1770 1771
	vdev_param = arvif->ar->wmi.vdev_param->atim_window;
	ret = ath10k_wmi_vdev_set_param(arvif->ar, arvif->vdev_id, vdev_param,
1772 1773
					ATH10K_DEFAULT_ATIM);
	if (ret)
1774
		ath10k_warn(ar, "failed to set IBSS ATIM for vdev %d: %d\n",
1775 1776 1777
			    arvif->vdev_id, ret);
}

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1778 1779 1780 1781 1782 1783 1784 1785 1786 1787 1788 1789 1790 1791 1792 1793 1794 1795 1796 1797 1798 1799 1800 1801 1802 1803 1804 1805 1806 1807 1808 1809 1810 1811 1812 1813 1814 1815 1816 1817 1818 1819 1820 1821 1822 1823 1824 1825 1826 1827 1828
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;
}

1829
static int ath10k_mac_num_vifs_started(struct ath10k *ar)
1830 1831 1832 1833 1834 1835 1836
{
	struct ath10k_vif *arvif;
	int num = 0;

	lockdep_assert_held(&ar->conf_mutex);

	list_for_each_entry(arvif, &ar->arvifs, list)
1837
		if (arvif->is_started)
1838 1839 1840 1841 1842
			num++;

	return num;
}

1843
static int ath10k_mac_vif_setup_ps(struct ath10k_vif *arvif)
1844
{
1845
	struct ath10k *ar = arvif->ar;
1846
	struct ieee80211_vif *vif = arvif->vif;
1847
	struct ieee80211_conf *conf = &ar->hw->conf;
1848 1849 1850
	enum wmi_sta_powersave_param param;
	enum wmi_sta_ps_mode psmode;
	int ret;
1851
	int ps_timeout;
1852
	bool enable_ps;
1853

M
Michal Kazior 已提交
1854 1855
	lockdep_assert_held(&arvif->ar->conf_mutex);

1856 1857
	if (arvif->vif->type != NL80211_IFTYPE_STATION)
		return 0;
1858

1859 1860
	enable_ps = arvif->ps;

1861
	if (enable_ps && ath10k_mac_num_vifs_started(ar) > 1 &&
1862
	    !test_bit(ATH10K_FW_FEATURE_MULTI_VIF_PS_SUPPORT,
1863
		      ar->running_fw->fw_file.fw_features)) {
1864 1865 1866 1867 1868
		ath10k_warn(ar, "refusing to enable ps on vdev %i: not supported by fw\n",
			    arvif->vdev_id);
		enable_ps = false;
	}

1869 1870 1871 1872 1873 1874 1875 1876
	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) {
1877 1878 1879
		psmode = WMI_STA_PS_MODE_ENABLED;
		param = WMI_STA_PS_PARAM_INACTIVITY_TIME;

1880 1881 1882 1883 1884 1885 1886
		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;
		}

1887
		ret = ath10k_wmi_set_sta_ps_param(ar, arvif->vdev_id, param,
1888
						  ps_timeout);
1889
		if (ret) {
1890
			ath10k_warn(ar, "failed to set inactivity time for vdev %d: %i\n",
1891
				    arvif->vdev_id, ret);
1892
			return ret;
1893 1894 1895 1896 1897
		}
	} else {
		psmode = WMI_STA_PS_MODE_DISABLED;
	}

1898
	ath10k_dbg(ar, ATH10K_DBG_MAC, "mac vdev %d psmode %s\n",
K
Kalle Valo 已提交
1899 1900
		   arvif->vdev_id, psmode ? "enable" : "disable");

1901 1902
	ret = ath10k_wmi_set_psmode(ar, arvif->vdev_id, psmode);
	if (ret) {
1903
		ath10k_warn(ar, "failed to set PS Mode %d for vdev %d: %d\n",
1904
			    psmode, arvif->vdev_id, ret);
1905 1906 1907 1908
		return ret;
	}

	return 0;
1909 1910
}

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Michal Kazior 已提交
1911 1912 1913 1914 1915 1916 1917 1918 1919 1920 1921 1922 1923 1924 1925 1926 1927 1928 1929 1930 1931 1932 1933 1934 1935 1936 1937 1938 1939 1940 1941 1942
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;
}

1943 1944 1945 1946 1947 1948
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;

1949 1950 1951 1952 1953
	lockdep_assert_held(&arvif->ar->conf_mutex);

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

1954 1955 1956 1957 1958 1959 1960 1961 1962 1963 1964 1965 1966 1967 1968 1969 1970 1971 1972 1973 1974 1975 1976 1977 1978 1979 1980 1981 1982 1983 1984 1985 1986 1987 1988 1989 1990
	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);
}

1991 1992 1993 1994 1995
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;
1996
	struct ath10k_vif *arvif = (void *)vif->drv_priv;
1997 1998 1999 2000 2001 2002 2003 2004 2005 2006 2007 2008 2009 2010 2011 2012 2013 2014 2015 2016 2017 2018

	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;
2019
	struct ath10k_vif *arvif = (void *)vif->drv_priv;
2020 2021 2022 2023 2024 2025 2026 2027 2028 2029 2030 2031 2032 2033 2034 2035 2036 2037 2038 2039 2040 2041 2042 2043 2044 2045 2046 2047 2048 2049 2050 2051 2052 2053 2054 2055 2056 2057 2058 2059
	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);
}

2060 2061 2062 2063
/**********************/
/* Station management */
/**********************/

M
Michal Kazior 已提交
2064 2065 2066 2067 2068 2069 2070 2071 2072 2073 2074 2075 2076 2077 2078 2079 2080
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;
}

2081
static void ath10k_peer_assoc_h_basic(struct ath10k *ar,
M
Michal Kazior 已提交
2082
				      struct ieee80211_vif *vif,
2083 2084 2085
				      struct ieee80211_sta *sta,
				      struct wmi_peer_assoc_complete_arg *arg)
{
2086
	struct ath10k_vif *arvif = (void *)vif->drv_priv;
2087
	u32 aid;
M
Michal Kazior 已提交
2088

M
Michal Kazior 已提交
2089 2090
	lockdep_assert_held(&ar->conf_mutex);

2091 2092 2093 2094 2095
	if (vif->type == NL80211_IFTYPE_STATION)
		aid = vif->bss_conf.aid;
	else
		aid = sta->aid;

K
Kalle Valo 已提交
2096
	ether_addr_copy(arg->addr, sta->addr);
2097
	arg->vdev_id = arvif->vdev_id;
2098
	arg->peer_aid = aid;
2099
	arg->peer_flags |= arvif->ar->wmi.peer_flags->auth;
M
Michal Kazior 已提交
2100
	arg->peer_listen_intval = ath10k_peer_assoc_h_listen_intval(ar, vif);
2101
	arg->peer_num_spatial_streams = 1;
M
Michal Kazior 已提交
2102
	arg->peer_caps = vif->bss_conf.assoc_capability;
2103 2104 2105
}

static void ath10k_peer_assoc_h_crypto(struct ath10k *ar,
M
Michal Kazior 已提交
2106
				       struct ieee80211_vif *vif,
2107
				       struct ieee80211_sta *sta,
2108 2109 2110
				       struct wmi_peer_assoc_complete_arg *arg)
{
	struct ieee80211_bss_conf *info = &vif->bss_conf;
M
Michal Kazior 已提交
2111
	struct cfg80211_chan_def def;
2112 2113 2114 2115
	struct cfg80211_bss *bss;
	const u8 *rsnie = NULL;
	const u8 *wpaie = NULL;

M
Michal Kazior 已提交
2116 2117
	lockdep_assert_held(&ar->conf_mutex);

M
Michal Kazior 已提交
2118 2119 2120 2121 2122
	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);
2123 2124 2125 2126 2127 2128 2129 2130 2131
	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,
2132 2133 2134
						WLAN_OUI_TYPE_MICROSOFT_WPA,
						ies->data,
						ies->len);
2135 2136 2137 2138 2139 2140
		rcu_read_unlock();
		cfg80211_put_bss(ar->hw->wiphy, bss);
	}

	/* FIXME: base on RSN IE/WPA IE is a correct idea? */
	if (rsnie || wpaie) {
2141
		ath10k_dbg(ar, ATH10K_DBG_WMI, "%s: rsn ie found\n", __func__);
2142
		arg->peer_flags |= ar->wmi.peer_flags->need_ptk_4_way;
2143 2144 2145
	}

	if (wpaie) {
2146
		ath10k_dbg(ar, ATH10K_DBG_WMI, "%s: wpa ie found\n", __func__);
2147
		arg->peer_flags |= ar->wmi.peer_flags->need_gtk_2_way;
2148
	}
2149 2150

	if (sta->mfp &&
2151 2152
	    test_bit(ATH10K_FW_FEATURE_MFP_SUPPORT,
		     ar->running_fw->fw_file.fw_features)) {
2153
		arg->peer_flags |= ar->wmi.peer_flags->pmf;
2154 2155 2156 2157
	}
}

static void ath10k_peer_assoc_h_rates(struct ath10k *ar,
M
Michal Kazior 已提交
2158
				      struct ieee80211_vif *vif,
2159 2160 2161
				      struct ieee80211_sta *sta,
				      struct wmi_peer_assoc_complete_arg *arg)
{
2162
	struct ath10k_vif *arvif = (void *)vif->drv_priv;
2163
	struct wmi_rate_set_arg *rateset = &arg->peer_legacy_rates;
M
Michal Kazior 已提交
2164
	struct cfg80211_chan_def def;
2165 2166
	const struct ieee80211_supported_band *sband;
	const struct ieee80211_rate *rates;
2167
	enum nl80211_band band;
2168
	u32 ratemask;
M
Michal Kazior 已提交
2169
	u8 rate;
2170 2171
	int i;

M
Michal Kazior 已提交
2172 2173
	lockdep_assert_held(&ar->conf_mutex);

M
Michal Kazior 已提交
2174 2175 2176
	if (WARN_ON(ath10k_mac_vif_chan(vif, &def)))
		return;

2177 2178 2179 2180
	band = def.chan->band;
	sband = ar->hw->wiphy->bands[band];
	ratemask = sta->supp_rates[band];
	ratemask &= arvif->bitrate_mask.control[band].legacy;
2181 2182 2183 2184 2185 2186 2187 2188
	rates = sband->bitrates;

	rateset->num_rates = 0;

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

M
Michal Kazior 已提交
2189 2190
		rate = ath10k_mac_bitrate_to_rate(rates->bitrate);
		rateset->rates[rateset->num_rates] = rate;
2191 2192 2193 2194
		rateset->num_rates++;
	}
}

2195 2196 2197 2198 2199 2200 2201 2202 2203 2204 2205 2206 2207 2208 2209 2210 2211 2212 2213 2214 2215 2216 2217 2218
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;
}

2219
static void ath10k_peer_assoc_h_ht(struct ath10k *ar,
2220
				   struct ieee80211_vif *vif,
2221 2222 2223 2224
				   struct ieee80211_sta *sta,
				   struct wmi_peer_assoc_complete_arg *arg)
{
	const struct ieee80211_sta_ht_cap *ht_cap = &sta->ht_cap;
2225
	struct ath10k_vif *arvif = (void *)vif->drv_priv;
2226
	struct cfg80211_chan_def def;
2227
	enum nl80211_band band;
2228 2229
	const u8 *ht_mcs_mask;
	const u16 *vht_mcs_mask;
2230 2231
	int i, n;
	u8 max_nss;
2232
	u32 stbc;
2233

M
Michal Kazior 已提交
2234 2235
	lockdep_assert_held(&ar->conf_mutex);

2236 2237 2238
	if (WARN_ON(ath10k_mac_vif_chan(vif, &def)))
		return;

2239 2240 2241
	if (!ht_cap->ht_supported)
		return;

2242 2243 2244 2245 2246 2247 2248 2249
	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;

2250
	arg->peer_flags |= ar->wmi.peer_flags->ht;
2251 2252 2253 2254 2255 2256 2257 2258 2259 2260
	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)
2261
		arg->peer_flags |= ar->wmi.peer_flags->ldbc;
2262 2263

	if (sta->bandwidth >= IEEE80211_STA_RX_BW_40) {
2264
		arg->peer_flags |= ar->wmi.peer_flags->bw40;
2265 2266 2267
		arg->peer_rate_caps |= WMI_RC_CW40_FLAG;
	}

2268 2269 2270
	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;
2271

2272 2273 2274
		if (ht_cap->cap & IEEE80211_HT_CAP_SGI_40)
			arg->peer_rate_caps |= WMI_RC_SGI_FLAG;
	}
2275 2276 2277

	if (ht_cap->cap & IEEE80211_HT_CAP_TX_STBC) {
		arg->peer_rate_caps |= WMI_RC_TX_STBC_FLAG;
2278
		arg->peer_flags |= ar->wmi.peer_flags->stbc;
2279 2280 2281 2282 2283 2284 2285
	}

	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;
2286
		arg->peer_flags |= ar->wmi.peer_flags->stbc;
2287 2288 2289 2290 2291 2292 2293
	}

	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;

2294 2295 2296 2297
	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;
2298
			arg->peer_ht_rates.rates[n++] = i;
2299
		}
2300

2301 2302 2303 2304 2305 2306 2307 2308 2309 2310 2311 2312 2313 2314 2315
	/*
	 * 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;
2316
		arg->peer_num_spatial_streams = min(sta->rx_nss, max_nss);
2317
	}
2318

2319
	ath10k_dbg(ar, ATH10K_DBG_MAC, "mac ht peer %pM mcs cnt %d nss %d\n",
K
Kalle Valo 已提交
2320
		   arg->addr,
2321 2322 2323 2324
		   arg->peer_ht_rates.num_rates,
		   arg->peer_num_spatial_streams);
}

2325 2326 2327
static int ath10k_peer_assoc_qos_ap(struct ath10k *ar,
				    struct ath10k_vif *arvif,
				    struct ieee80211_sta *sta)
2328 2329 2330
{
	u32 uapsd = 0;
	u32 max_sp = 0;
2331
	int ret = 0;
2332

M
Michal Kazior 已提交
2333 2334
	lockdep_assert_held(&ar->conf_mutex);

2335
	if (sta->wme && sta->uapsd_queues) {
2336
		ath10k_dbg(ar, ATH10K_DBG_MAC, "mac uapsd_queues 0x%x max_sp %d\n",
2337 2338 2339 2340 2341 2342 2343 2344 2345 2346 2347 2348 2349 2350 2351 2352 2353 2354
			   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;

2355 2356 2357 2358 2359
		ret = ath10k_wmi_set_ap_ps_param(ar, arvif->vdev_id,
						 sta->addr,
						 WMI_AP_PS_PEER_PARAM_UAPSD,
						 uapsd);
		if (ret) {
2360
			ath10k_warn(ar, "failed to set ap ps peer param uapsd for vdev %i: %d\n",
2361
				    arvif->vdev_id, ret);
2362 2363
			return ret;
		}
2364

2365 2366 2367 2368 2369
		ret = ath10k_wmi_set_ap_ps_param(ar, arvif->vdev_id,
						 sta->addr,
						 WMI_AP_PS_PEER_PARAM_MAX_SP,
						 max_sp);
		if (ret) {
2370
			ath10k_warn(ar, "failed to set ap ps peer param max sp for vdev %i: %d\n",
2371
				    arvif->vdev_id, ret);
2372 2373
			return ret;
		}
2374 2375 2376 2377 2378

		/* 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 */
2379
		ret = ath10k_wmi_set_ap_ps_param(ar, arvif->vdev_id, sta->addr,
2380 2381
						 WMI_AP_PS_PEER_PARAM_AGEOUT_TIME,
						 10);
2382
		if (ret) {
2383
			ath10k_warn(ar, "failed to set ap ps peer param ageout time for vdev %i: %d\n",
2384
				    arvif->vdev_id, ret);
2385 2386
			return ret;
		}
2387 2388
	}

2389
	return 0;
2390 2391
}

2392 2393 2394 2395 2396 2397 2398 2399 2400 2401 2402 2403 2404 2405 2406 2407 2408 2409 2410 2411 2412 2413 2414 2415 2416 2417 2418 2419 2420 2421 2422 2423 2424 2425 2426 2427 2428 2429 2430 2431 2432 2433 2434 2435 2436 2437 2438 2439 2440 2441 2442
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;
}

2443
static void ath10k_peer_assoc_h_vht(struct ath10k *ar,
M
Michal Kazior 已提交
2444
				    struct ieee80211_vif *vif,
2445 2446 2447 2448
				    struct ieee80211_sta *sta,
				    struct wmi_peer_assoc_complete_arg *arg)
{
	const struct ieee80211_sta_vht_cap *vht_cap = &sta->vht_cap;
2449
	struct ath10k_vif *arvif = (void *)vif->drv_priv;
M
Michal Kazior 已提交
2450
	struct cfg80211_chan_def def;
2451
	enum nl80211_band band;
2452
	const u16 *vht_mcs_mask;
2453
	u8 ampdu_factor;
2454

M
Michal Kazior 已提交
2455 2456 2457
	if (WARN_ON(ath10k_mac_vif_chan(vif, &def)))
		return;

2458 2459 2460
	if (!vht_cap->vht_supported)
		return;

2461 2462 2463 2464 2465 2466
	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;

2467
	arg->peer_flags |= ar->wmi.peer_flags->vht;
2468

2469
	if (def.chan->band == NL80211_BAND_2GHZ)
2470
		arg->peer_flags |= ar->wmi.peer_flags->vht_2g;
2471

2472 2473
	arg->peer_vht_caps = vht_cap->cap;

2474 2475 2476 2477 2478 2479 2480 2481 2482 2483 2484 2485
	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);

2486
	if (sta->bandwidth == IEEE80211_STA_RX_BW_80)
2487
		arg->peer_flags |= ar->wmi.peer_flags->bw80;
2488

2489 2490 2491
	if (sta->bandwidth == IEEE80211_STA_RX_BW_160)
		arg->peer_flags |= ar->wmi.peer_flags->bw160;

2492 2493 2494 2495 2496 2497
	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);
2498 2499
	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);
2500

2501
	ath10k_dbg(ar, ATH10K_DBG_MAC, "mac vht peer %pM max_mpdu %d flags 0x%x\n",
K
Kalle Valo 已提交
2502
		   sta->addr, arg->peer_max_mpdu, arg->peer_flags);
2503 2504 2505
}

static void ath10k_peer_assoc_h_qos(struct ath10k *ar,
M
Michal Kazior 已提交
2506
				    struct ieee80211_vif *vif,
2507 2508 2509
				    struct ieee80211_sta *sta,
				    struct wmi_peer_assoc_complete_arg *arg)
{
2510
	struct ath10k_vif *arvif = (void *)vif->drv_priv;
M
Michal Kazior 已提交
2511

2512 2513
	switch (arvif->vdev_type) {
	case WMI_VDEV_TYPE_AP:
2514
		if (sta->wme)
2515
			arg->peer_flags |= arvif->ar->wmi.peer_flags->qos;
2516 2517

		if (sta->wme && sta->uapsd_queues) {
2518
			arg->peer_flags |= arvif->ar->wmi.peer_flags->apsd;
2519 2520
			arg->peer_rate_caps |= WMI_RC_UAPSD_FLAG;
		}
2521 2522
		break;
	case WMI_VDEV_TYPE_STA:
M
Michal Kazior 已提交
2523
		if (vif->bss_conf.qos)
2524
			arg->peer_flags |= arvif->ar->wmi.peer_flags->qos;
2525
		break;
2526 2527
	case WMI_VDEV_TYPE_IBSS:
		if (sta->wme)
2528
			arg->peer_flags |= arvif->ar->wmi.peer_flags->qos;
2529
		break;
2530 2531 2532
	default:
		break;
	}
2533 2534

	ath10k_dbg(ar, ATH10K_DBG_MAC, "mac peer %pM qos %d\n",
2535 2536
		   sta->addr, !!(arg->peer_flags &
		   arvif->ar->wmi.peer_flags->qos));
2537 2538
}

2539
static bool ath10k_mac_sta_has_ofdm_only(struct ieee80211_sta *sta)
M
Michal Kazior 已提交
2540
{
2541
	return sta->supp_rates[NL80211_BAND_2GHZ] >>
2542
	       ATH10K_MAC_FIRST_OFDM_RATE_IDX;
M
Michal Kazior 已提交
2543 2544
}

2545 2546 2547
static enum wmi_phy_mode ath10k_mac_get_phymode_vht(struct ath10k *ar,
						    struct ieee80211_sta *sta)
{
2548 2549 2550 2551 2552 2553 2554 2555 2556 2557 2558 2559
	if (sta->bandwidth == IEEE80211_STA_RX_BW_160) {
		switch (sta->vht_cap.cap & IEEE80211_VHT_CAP_SUPP_CHAN_WIDTH_MASK) {
		case IEEE80211_VHT_CAP_SUPP_CHAN_WIDTH_160MHZ:
			return MODE_11AC_VHT160;
		case IEEE80211_VHT_CAP_SUPP_CHAN_WIDTH_160_80PLUS80MHZ:
			return MODE_11AC_VHT80_80;
		default:
			/* not sure if this is a valid case? */
			return MODE_11AC_VHT160;
		}
	}

2560 2561 2562 2563 2564 2565 2566 2567 2568 2569 2570 2571
	if (sta->bandwidth == IEEE80211_STA_RX_BW_80)
		return MODE_11AC_VHT80;

	if (sta->bandwidth == IEEE80211_STA_RX_BW_40)
		return MODE_11AC_VHT40;

	if (sta->bandwidth == IEEE80211_STA_RX_BW_20)
		return MODE_11AC_VHT20;

	return MODE_UNKNOWN;
}

2572
static void ath10k_peer_assoc_h_phymode(struct ath10k *ar,
M
Michal Kazior 已提交
2573
					struct ieee80211_vif *vif,
2574 2575 2576
					struct ieee80211_sta *sta,
					struct wmi_peer_assoc_complete_arg *arg)
{
2577
	struct ath10k_vif *arvif = (void *)vif->drv_priv;
M
Michal Kazior 已提交
2578
	struct cfg80211_chan_def def;
2579
	enum nl80211_band band;
2580 2581
	const u8 *ht_mcs_mask;
	const u16 *vht_mcs_mask;
2582 2583
	enum wmi_phy_mode phymode = MODE_UNKNOWN;

M
Michal Kazior 已提交
2584 2585 2586
	if (WARN_ON(ath10k_mac_vif_chan(vif, &def)))
		return;

2587 2588 2589 2590 2591
	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) {
2592
	case NL80211_BAND_2GHZ:
2593 2594
		if (sta->vht_cap.vht_supported &&
		    !ath10k_peer_assoc_h_vht_masked(vht_mcs_mask)) {
2595 2596 2597 2598
			if (sta->bandwidth == IEEE80211_STA_RX_BW_40)
				phymode = MODE_11AC_VHT40;
			else
				phymode = MODE_11AC_VHT20;
2599 2600
		} else if (sta->ht_cap.ht_supported &&
			   !ath10k_peer_assoc_h_ht_masked(ht_mcs_mask)) {
2601 2602 2603 2604
			if (sta->bandwidth == IEEE80211_STA_RX_BW_40)
				phymode = MODE_11NG_HT40;
			else
				phymode = MODE_11NG_HT20;
2605
		} else if (ath10k_mac_sta_has_ofdm_only(sta)) {
2606
			phymode = MODE_11G;
M
Michal Kazior 已提交
2607 2608
		} else {
			phymode = MODE_11B;
2609 2610 2611
		}

		break;
2612
	case NL80211_BAND_5GHZ:
2613 2614 2615
		/*
		 * Check VHT first.
		 */
2616 2617
		if (sta->vht_cap.vht_supported &&
		    !ath10k_peer_assoc_h_vht_masked(vht_mcs_mask)) {
2618
			phymode = ath10k_mac_get_phymode_vht(ar, sta);
2619 2620 2621
		} else if (sta->ht_cap.ht_supported &&
			   !ath10k_peer_assoc_h_ht_masked(ht_mcs_mask)) {
			if (sta->bandwidth >= IEEE80211_STA_RX_BW_40)
2622 2623 2624 2625 2626 2627 2628 2629 2630 2631 2632 2633
				phymode = MODE_11NA_HT40;
			else
				phymode = MODE_11NA_HT20;
		} else {
			phymode = MODE_11A;
		}

		break;
	default:
		break;
	}

2634
	ath10k_dbg(ar, ATH10K_DBG_MAC, "mac peer %pM phymode %s\n",
K
Kalle Valo 已提交
2635
		   sta->addr, ath10k_wmi_phymode_str(phymode));
K
Kalle Valo 已提交
2636

2637 2638 2639 2640
	arg->peer_phymode = phymode;
	WARN_ON(phymode == MODE_UNKNOWN);
}

2641
static int ath10k_peer_assoc_prepare(struct ath10k *ar,
M
Michal Kazior 已提交
2642
				     struct ieee80211_vif *vif,
2643 2644
				     struct ieee80211_sta *sta,
				     struct wmi_peer_assoc_complete_arg *arg)
2645
{
M
Michal Kazior 已提交
2646 2647
	lockdep_assert_held(&ar->conf_mutex);

2648
	memset(arg, 0, sizeof(*arg));
2649

M
Michal Kazior 已提交
2650
	ath10k_peer_assoc_h_basic(ar, vif, sta, arg);
2651
	ath10k_peer_assoc_h_crypto(ar, vif, sta, arg);
M
Michal Kazior 已提交
2652
	ath10k_peer_assoc_h_rates(ar, vif, sta, arg);
2653
	ath10k_peer_assoc_h_ht(ar, vif, sta, arg);
M
Michal Kazior 已提交
2654
	ath10k_peer_assoc_h_vht(ar, vif, sta, arg);
M
Michal Kazior 已提交
2655 2656
	ath10k_peer_assoc_h_qos(ar, vif, sta, arg);
	ath10k_peer_assoc_h_phymode(ar, vif, sta, arg);
2657

2658
	return 0;
2659 2660
}

M
Michal Kazior 已提交
2661 2662 2663 2664 2665 2666 2667 2668 2669 2670 2671 2672 2673 2674 2675 2676 2677 2678 2679 2680 2681 2682 2683 2684 2685 2686 2687
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]);
}

M
Michal Kazior 已提交
2688 2689 2690 2691
static int ath10k_mac_vif_recalc_txbf(struct ath10k *ar,
				      struct ieee80211_vif *vif,
				      struct ieee80211_sta_vht_cap vht_cap)
{
2692
	struct ath10k_vif *arvif = (void *)vif->drv_priv;
M
Michal Kazior 已提交
2693 2694 2695 2696
	int ret;
	u32 param;
	u32 value;

2697 2698 2699
	if (ath10k_wmi_get_txbf_conf_scheme(ar) != WMI_TXBF_CONF_AFTER_ASSOC)
		return 0;

M
Michal Kazior 已提交
2700 2701 2702 2703 2704 2705 2706 2707 2708 2709 2710 2711 2712 2713 2714 2715 2716 2717 2718 2719 2720 2721 2722 2723 2724 2725 2726 2727 2728 2729 2730 2731 2732 2733 2734 2735 2736 2737 2738 2739 2740 2741 2742 2743 2744 2745 2746 2747 2748 2749 2750 2751 2752
	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;
}

2753 2754 2755 2756 2757 2758
/* 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;
2759
	struct ath10k_vif *arvif = (void *)vif->drv_priv;
M
Michal Kazior 已提交
2760
	struct ieee80211_sta_ht_cap ht_cap;
M
Michal Kazior 已提交
2761
	struct ieee80211_sta_vht_cap vht_cap;
2762
	struct wmi_peer_assoc_complete_arg peer_arg;
2763 2764 2765
	struct ieee80211_sta *ap_sta;
	int ret;

M
Michal Kazior 已提交
2766 2767
	lockdep_assert_held(&ar->conf_mutex);

2768 2769 2770
	ath10k_dbg(ar, ATH10K_DBG_MAC, "mac vdev %i assoc bssid %pM aid %d\n",
		   arvif->vdev_id, arvif->bssid, arvif->aid);

2771 2772 2773 2774
	rcu_read_lock();

	ap_sta = ieee80211_find_sta(vif, bss_conf->bssid);
	if (!ap_sta) {
2775
		ath10k_warn(ar, "failed to find station entry for bss %pM vdev %i\n",
2776
			    bss_conf->bssid, arvif->vdev_id);
2777 2778 2779 2780
		rcu_read_unlock();
		return;
	}

M
Michal Kazior 已提交
2781 2782 2783
	/* 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;
M
Michal Kazior 已提交
2784
	vht_cap = ap_sta->vht_cap;
M
Michal Kazior 已提交
2785

M
Michal Kazior 已提交
2786
	ret = ath10k_peer_assoc_prepare(ar, vif, ap_sta, &peer_arg);
2787
	if (ret) {
2788
		ath10k_warn(ar, "failed to prepare peer assoc for %pM vdev %i: %d\n",
2789
			    bss_conf->bssid, arvif->vdev_id, ret);
2790 2791 2792 2793 2794 2795
		rcu_read_unlock();
		return;
	}

	rcu_read_unlock();

2796 2797
	ret = ath10k_wmi_peer_assoc(ar, &peer_arg);
	if (ret) {
2798
		ath10k_warn(ar, "failed to run peer assoc for %pM vdev %i: %d\n",
2799
			    bss_conf->bssid, arvif->vdev_id, ret);
2800 2801 2802
		return;
	}

M
Michal Kazior 已提交
2803 2804
	ret = ath10k_setup_peer_smps(ar, arvif, bss_conf->bssid, &ht_cap);
	if (ret) {
2805
		ath10k_warn(ar, "failed to setup peer SMPS for vdev %i: %d\n",
2806
			    arvif->vdev_id, ret);
M
Michal Kazior 已提交
2807 2808 2809
		return;
	}

M
Michal Kazior 已提交
2810 2811 2812 2813 2814 2815 2816
	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;
	}

2817
	ath10k_dbg(ar, ATH10K_DBG_MAC,
K
Kalle Valo 已提交
2818 2819 2820
		   "mac vdev %d up (associated) bssid %pM aid %d\n",
		   arvif->vdev_id, bss_conf->bssid, bss_conf->aid);

2821 2822
	WARN_ON(arvif->is_up);

2823
	arvif->aid = bss_conf->aid;
K
Kalle Valo 已提交
2824
	ether_addr_copy(arvif->bssid, bss_conf->bssid);
2825 2826 2827

	ret = ath10k_wmi_vdev_up(ar, arvif->vdev_id, arvif->aid, arvif->bssid);
	if (ret) {
2828
		ath10k_warn(ar, "failed to set vdev %d up: %d\n",
2829
			    arvif->vdev_id, ret);
2830 2831 2832 2833
		return;
	}

	arvif->is_up = true;
2834 2835 2836 2837 2838 2839 2840 2841 2842 2843 2844 2845

	/* 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;
	}
2846 2847 2848 2849 2850 2851
}

static void ath10k_bss_disassoc(struct ieee80211_hw *hw,
				struct ieee80211_vif *vif)
{
	struct ath10k *ar = hw->priv;
2852
	struct ath10k_vif *arvif = (void *)vif->drv_priv;
M
Michal Kazior 已提交
2853
	struct ieee80211_sta_vht_cap vht_cap = {};
2854 2855
	int ret;

M
Michal Kazior 已提交
2856 2857
	lockdep_assert_held(&ar->conf_mutex);

2858 2859
	ath10k_dbg(ar, ATH10K_DBG_MAC, "mac vdev %i disassoc bssid %pM\n",
		   arvif->vdev_id, arvif->bssid);
K
Kalle Valo 已提交
2860

2861
	ret = ath10k_wmi_vdev_down(ar, arvif->vdev_id);
2862
	if (ret)
B
Ben Greear 已提交
2863
		ath10k_warn(ar, "failed to down vdev %i: %d\n",
2864
			    arvif->vdev_id, ret);
2865

2866 2867
	arvif->def_wep_key_idx = -1;

M
Michal Kazior 已提交
2868 2869 2870 2871 2872 2873 2874
	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;
	}

2875
	arvif->is_up = false;
2876 2877

	cancel_delayed_work_sync(&arvif->connection_loss_work);
2878 2879
}

M
Michal Kazior 已提交
2880 2881 2882 2883
static int ath10k_station_assoc(struct ath10k *ar,
				struct ieee80211_vif *vif,
				struct ieee80211_sta *sta,
				bool reassoc)
2884
{
2885
	struct ath10k_vif *arvif = (void *)vif->drv_priv;
2886
	struct wmi_peer_assoc_complete_arg peer_arg;
2887 2888
	int ret = 0;

M
Michal Kazior 已提交
2889 2890
	lockdep_assert_held(&ar->conf_mutex);

M
Michal Kazior 已提交
2891
	ret = ath10k_peer_assoc_prepare(ar, vif, sta, &peer_arg);
2892
	if (ret) {
2893
		ath10k_warn(ar, "failed to prepare WMI peer assoc for %pM vdev %i: %i\n",
2894
			    sta->addr, arvif->vdev_id, ret);
2895 2896 2897 2898
		return ret;
	}

	ret = ath10k_wmi_peer_assoc(ar, &peer_arg);
2899
	if (ret) {
2900
		ath10k_warn(ar, "failed to run peer assoc for STA %pM vdev %i: %d\n",
2901
			    sta->addr, arvif->vdev_id, ret);
2902 2903 2904
		return ret;
	}

2905 2906 2907 2908 2909 2910
	/* 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);
2911
		if (ret) {
2912
			ath10k_warn(ar, "failed to setup peer SMPS for vdev %d: %d\n",
2913 2914 2915 2916
				    arvif->vdev_id, ret);
			return ret;
		}

2917 2918 2919 2920 2921 2922
		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;
		}
2923

2924 2925 2926 2927 2928 2929 2930 2931 2932 2933
		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;
			}
		}

2934 2935 2936 2937 2938 2939 2940 2941
		/* 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;
			}
2942
		}
2943 2944
	}

2945 2946 2947
	return ret;
}

M
Michal Kazior 已提交
2948 2949
static int ath10k_station_disassoc(struct ath10k *ar,
				   struct ieee80211_vif *vif,
2950 2951
				   struct ieee80211_sta *sta)
{
2952
	struct ath10k_vif *arvif = (void *)vif->drv_priv;
2953 2954
	int ret = 0;

M
Michal Kazior 已提交
2955 2956
	lockdep_assert_held(&ar->conf_mutex);

2957 2958 2959 2960
	if (!sta->wme) {
		arvif->num_legacy_stations--;
		ret = ath10k_recalc_rtscts_prot(arvif);
		if (ret) {
2961
			ath10k_warn(ar, "failed to recalculate rts/cts prot for vdev %d: %d\n",
2962 2963 2964 2965 2966
				    arvif->vdev_id, ret);
			return ret;
		}
	}

2967 2968
	ret = ath10k_clear_peer_keys(arvif, sta->addr);
	if (ret) {
2969
		ath10k_warn(ar, "failed to clear all peer wep keys for vdev %i: %d\n",
2970
			    arvif->vdev_id, ret);
2971 2972 2973 2974 2975 2976 2977 2978 2979 2980 2981 2982 2983 2984
		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;
2985
	enum nl80211_band band;
2986 2987 2988 2989 2990 2991 2992 2993
	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;

M
Michal Kazior 已提交
2994 2995
	lockdep_assert_held(&ar->conf_mutex);

2996
	bands = hw->wiphy->bands;
2997
	for (band = 0; band < NUM_NL80211_BANDS; band++) {
2998 2999 3000 3001 3002 3003 3004 3005 3006 3007 3008 3009 3010 3011 3012 3013 3014 3015
		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;
3016
	for (band = 0; band < NUM_NL80211_BANDS; band++) {
3017 3018 3019 3020 3021 3022 3023 3024 3025
		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;

3026
			ch->allow_ht = true;
3027 3028 3029 3030 3031

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

			ch->allow_ibss =
3032
				!(channel->flags & IEEE80211_CHAN_NO_IR);
3033 3034 3035 3036

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

3037 3038 3039
			ch->chan_radar =
				!!(channel->flags & IEEE80211_CHAN_RADAR);

3040
			passive = channel->flags & IEEE80211_CHAN_NO_IR;
3041 3042 3043
			ch->passive = passive;

			ch->freq = channel->center_freq;
3044
			ch->band_center_freq1 = channel->center_freq;
3045
			ch->min_power = 0;
M
Michal Kazior 已提交
3046 3047 3048
			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;
3049 3050 3051 3052 3053
			ch->reg_class_id = 0; /* FIXME */

			/* FIXME: why use only legacy modes, why not any
			 * HT/VHT modes? Would that even make any
			 * difference? */
3054
			if (channel->band == NL80211_BAND_2GHZ)
3055 3056 3057 3058 3059 3060 3061
				ch->mode = MODE_11G;
			else
				ch->mode = MODE_11A;

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

3062
			ath10k_dbg(ar, ATH10K_DBG_WMI,
K
Kalle Valo 已提交
3063 3064
				   "mac channel [%zd/%d] freq %d maxpower %d regpower %d antenna %d mode %d\n",
				    ch - arg.channels, arg.n_channels,
3065 3066 3067 3068 3069 3070 3071 3072 3073 3074 3075 3076 3077
				   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;
}

3078 3079 3080 3081 3082 3083 3084 3085 3086 3087 3088 3089 3090 3091 3092 3093
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;
}

3094
static void ath10k_regd_update(struct ath10k *ar)
3095 3096 3097
{
	struct reg_dmn_pair_mapping *regpair;
	int ret;
3098 3099
	enum wmi_dfs_region wmi_dfs_reg;
	enum nl80211_dfs_regions nl_dfs_reg;
3100

3101
	lockdep_assert_held(&ar->conf_mutex);
3102 3103 3104

	ret = ath10k_update_channel_list(ar);
	if (ret)
3105
		ath10k_warn(ar, "failed to update channel list: %d\n", ret);
3106 3107

	regpair = ar->ath_common.regulatory.regpair;
3108

3109
	if (IS_ENABLED(CONFIG_ATH10K_DFS_CERTIFIED) && ar->dfs_detector) {
3110 3111 3112 3113 3114 3115
		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;
	}

3116 3117 3118
	/* Target allows setting up per-band regdomain but ath_common provides
	 * a combined one only */
	ret = ath10k_wmi_pdev_set_regdomain(ar,
3119 3120 3121
					    regpair->reg_domain,
					    regpair->reg_domain, /* 2ghz */
					    regpair->reg_domain, /* 5ghz */
3122
					    regpair->reg_2ghz_ctl,
3123 3124
					    regpair->reg_5ghz_ctl,
					    wmi_dfs_reg);
3125
	if (ret)
3126
		ath10k_warn(ar, "failed to set pdev regdomain: %d\n", ret);
3127
}
M
Michal Kazior 已提交
3128

3129 3130 3131 3132 3133 3134 3135 3136 3137 3138 3139 3140 3141 3142 3143
void ath10k_mac_update_channel_list(struct ath10k *ar,
				    struct ieee80211_supported_band *band)
{
	int i;

	if (ar->low_5ghz_chan && ar->high_5ghz_chan) {
		for (i = 0; i < band->n_channels; i++) {
			if (band->channels[i].center_freq < ar->low_5ghz_chan ||
			    band->channels[i].center_freq > ar->high_5ghz_chan)
				band->channels[i].flags |=
					IEEE80211_CHAN_DISABLED;
		}
	}
}

3144 3145 3146 3147 3148
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;
J
Janusz Dziedzic 已提交
3149
	bool result;
3150 3151 3152

	ath_reg_notifier_apply(wiphy, request, &ar->ath_common.regulatory);

3153
	if (IS_ENABLED(CONFIG_ATH10K_DFS_CERTIFIED) && ar->dfs_detector) {
3154
		ath10k_dbg(ar, ATH10K_DBG_REGULATORY, "dfs region 0x%x\n",
J
Janusz Dziedzic 已提交
3155 3156 3157 3158
			   request->dfs_region);
		result = ar->dfs_detector->set_dfs_domain(ar->dfs_detector,
							  request->dfs_region);
		if (!result)
3159
			ath10k_warn(ar, "DFS region 0x%X not supported, will trigger radar for every pulse\n",
J
Janusz Dziedzic 已提交
3160 3161 3162
				    request->dfs_region);
	}

3163 3164 3165
	mutex_lock(&ar->conf_mutex);
	if (ar->state == ATH10K_STATE_ON)
		ath10k_regd_update(ar);
M
Michal Kazior 已提交
3166
	mutex_unlock(&ar->conf_mutex);
3167 3168 3169 3170

	if (ar->phy_capability & WHAL_WLAN_11A_CAPABILITY)
		ath10k_mac_update_channel_list(ar,
				ar->hw->wiphy->bands[NL80211_BAND_5GHZ]);
3171 3172 3173 3174 3175 3176
}

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

M
Michal Kazior 已提交
3177 3178 3179 3180 3181 3182 3183
enum ath10k_mac_tx_path {
	ATH10K_MAC_TX_HTT,
	ATH10K_MAC_TX_HTT_MGMT,
	ATH10K_MAC_TX_WMI_MGMT,
	ATH10K_MAC_TX_UNKNOWN,
};

M
Michal Kazior 已提交
3184
void ath10k_mac_tx_lock(struct ath10k *ar, int reason)
3185
{
M
Michal Kazior 已提交
3186
	lockdep_assert_held(&ar->htt.tx_lock);
3187

M
Michal Kazior 已提交
3188 3189 3190
	WARN_ON(reason >= ATH10K_TX_PAUSE_MAX);
	ar->tx_paused |= BIT(reason);
	ieee80211_stop_queues(ar->hw);
3191 3192
}

M
Michal Kazior 已提交
3193 3194
static void ath10k_mac_tx_unlock_iter(void *data, u8 *mac,
				      struct ieee80211_vif *vif)
3195
{
M
Michal Kazior 已提交
3196
	struct ath10k *ar = data;
3197
	struct ath10k_vif *arvif = (void *)vif->drv_priv;
3198

M
Michal Kazior 已提交
3199 3200
	if (arvif->tx_paused)
		return;
3201

M
Michal Kazior 已提交
3202
	ieee80211_wake_queue(ar->hw, arvif->vdev_id);
3203 3204
}

M
Michal Kazior 已提交
3205
void ath10k_mac_tx_unlock(struct ath10k *ar, int reason)
3206
{
M
Michal Kazior 已提交
3207
	lockdep_assert_held(&ar->htt.tx_lock);
3208

M
Michal Kazior 已提交
3209 3210
	WARN_ON(reason >= ATH10K_TX_PAUSE_MAX);
	ar->tx_paused &= ~BIT(reason);
3211

M
Michal Kazior 已提交
3212 3213
	if (ar->tx_paused)
		return;
3214

M
Michal Kazior 已提交
3215 3216 3217 3218
	ieee80211_iterate_active_interfaces_atomic(ar->hw,
						   IEEE80211_IFACE_ITER_RESUME_ALL,
						   ath10k_mac_tx_unlock_iter,
						   ar);
3219 3220

	ieee80211_wake_queue(ar->hw, ar->hw->offchannel_tx_hw_queue);
3221 3222
}

M
Michal Kazior 已提交
3223
void ath10k_mac_vif_tx_lock(struct ath10k_vif *arvif, int reason)
3224
{
M
Michal Kazior 已提交
3225
	struct ath10k *ar = arvif->ar;
3226

M
Michal Kazior 已提交
3227
	lockdep_assert_held(&ar->htt.tx_lock);
3228

M
Michal Kazior 已提交
3229 3230 3231 3232 3233 3234 3235 3236 3237 3238 3239 3240 3241 3242 3243 3244 3245 3246 3247 3248 3249 3250 3251
	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);
}

3252 3253 3254 3255 3256 3257 3258 3259
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);

3260 3261 3262 3263 3264 3265
	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);
3266 3267
		break;
	default:
3268 3269
		ath10k_dbg(ar, ATH10K_DBG_BOOT,
			   "received unknown tx pause action %d on vdev %i, ignoring\n",
3270
			    action, arvif->vdev_id);
3271 3272 3273 3274 3275 3276 3277 3278 3279 3280 3281 3282 3283
		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)
{
3284
	struct ath10k_vif *arvif = (void *)vif->drv_priv;
3285 3286
	struct ath10k_mac_tx_pause *arg = data;

3287 3288 3289
	if (arvif->vdev_id != arg->vdev_id)
		return;

3290 3291 3292
	ath10k_mac_vif_handle_tx_pause(arvif, arg->pause_id, arg->action);
}

3293 3294 3295
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)
3296 3297 3298 3299 3300 3301 3302 3303 3304 3305 3306 3307 3308 3309 3310
{
	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);
}

3311
static enum ath10k_hw_txrx_mode
3312 3313 3314 3315
ath10k_mac_tx_h_get_txmode(struct ath10k *ar,
			   struct ieee80211_vif *vif,
			   struct ieee80211_sta *sta,
			   struct sk_buff *skb)
3316 3317 3318 3319 3320 3321 3322 3323 3324 3325 3326 3327 3328 3329 3330 3331 3332 3333 3334 3335 3336 3337 3338 3339 3340 3341 3342 3343
{
	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)) &&
3344 3345
	    !test_bit(ATH10K_FW_FEATURE_HAS_WMI_MGMT_TX,
		      ar->running_fw->fw_file.fw_features))
3346 3347
		return ATH10K_HW_TXRX_MGMT;

3348 3349 3350 3351 3352
	/* 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.
3353 3354
	 *
	 * FIXME: Check if raw mode works with TDLS.
3355 3356 3357 3358
	 */
	if (ieee80211_is_data_present(fc) && sta && sta->tdls)
		return ATH10K_HW_TXRX_ETHERNET;

3359 3360 3361
	if (test_bit(ATH10K_FLAG_RAW_MODE, &ar->dev_flags))
		return ATH10K_HW_TXRX_RAW;

3362 3363 3364
	return ATH10K_HW_TXRX_NATIVE_WIFI;
}

3365
static bool ath10k_tx_h_use_hwcrypto(struct ieee80211_vif *vif,
3366 3367 3368 3369
				     struct sk_buff *skb)
{
	const struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
	const struct ieee80211_hdr *hdr = (void *)skb->data;
3370 3371
	const u32 mask = IEEE80211_TX_INTFL_DONT_ENCRYPT |
			 IEEE80211_TX_CTL_INJECTED;
3372 3373 3374 3375

	if (!ieee80211_has_protected(hdr->frame_control))
		return false;

3376 3377
	if ((info->flags & mask) == mask)
		return false;
3378

3379
	if (vif)
3380
		return !((struct ath10k_vif *)vif->drv_priv)->nohwcrypt;
3381

3382 3383 3384
	return true;
}

M
Michal Kazior 已提交
3385 3386
/* HTT Tx uses Native Wifi tx mode which expects 802.11 frames without QoS
 * Control in the header.
3387
 */
M
Michal Kazior 已提交
3388
static void ath10k_tx_h_nwifi(struct ieee80211_hw *hw, struct sk_buff *skb)
3389 3390
{
	struct ieee80211_hdr *hdr = (void *)skb->data;
3391
	struct ath10k_skb_cb *cb = ATH10K_SKB_CB(skb);
3392 3393 3394 3395 3396 3397
	u8 *qos_ctl;

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

	qos_ctl = ieee80211_get_qos_ctl(hdr);
3398 3399 3400
	memmove(skb->data + IEEE80211_QOS_CTL_LEN,
		skb->data, (void *)qos_ctl - (void *)skb->data);
	skb_pull(skb, IEEE80211_QOS_CTL_LEN);
3401

3402 3403 3404
	/* 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.
3405
	 */
M
Michal Kazior 已提交
3406
	hdr = (void *)skb->data;
3407
	if (ieee80211_is_qos_nullfunc(hdr->frame_control))
3408
		cb->flags &= ~ATH10K_SKB_F_QOS;
3409 3410

	hdr->frame_control &= ~__cpu_to_le16(IEEE80211_STYPE_QOS_DATA);
3411 3412
}

3413 3414 3415 3416 3417 3418 3419 3420 3421 3422 3423 3424 3425 3426 3427 3428 3429 3430 3431 3432 3433 3434 3435 3436 3437
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;
3438 3439
}

M
Michal Kazior 已提交
3440 3441 3442
static void ath10k_tx_h_add_p2p_noa_ie(struct ath10k *ar,
				       struct ieee80211_vif *vif,
				       struct sk_buff *skb)
3443 3444
{
	struct ieee80211_hdr *hdr = (struct ieee80211_hdr *)skb->data;
3445
	struct ath10k_vif *arvif = (void *)vif->drv_priv;
3446 3447

	/* This is case only for P2P_GO */
3448
	if (vif->type != NL80211_IFTYPE_AP || !vif->p2p)
3449 3450 3451 3452 3453 3454 3455 3456 3457 3458 3459 3460 3461 3462
		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);
	}
}

M
Michal Kazior 已提交
3463 3464
static void ath10k_mac_tx_h_fill_cb(struct ath10k *ar,
				    struct ieee80211_vif *vif,
M
Michal Kazior 已提交
3465
				    struct ieee80211_txq *txq,
M
Michal Kazior 已提交
3466 3467 3468 3469 3470 3471 3472 3473 3474 3475 3476 3477 3478 3479 3480 3481
				    struct sk_buff *skb)
{
	struct ieee80211_hdr *hdr = (void *)skb->data;
	struct ath10k_skb_cb *cb = ATH10K_SKB_CB(skb);

	cb->flags = 0;
	if (!ath10k_tx_h_use_hwcrypto(vif, skb))
		cb->flags |= ATH10K_SKB_F_NO_HWCRYPT;

	if (ieee80211_is_mgmt(hdr->frame_control))
		cb->flags |= ATH10K_SKB_F_MGMT;

	if (ieee80211_is_data_qos(hdr->frame_control))
		cb->flags |= ATH10K_SKB_F_QOS;

	cb->vif = vif;
M
Michal Kazior 已提交
3482
	cb->txq = txq;
M
Michal Kazior 已提交
3483 3484
}

3485
bool ath10k_mac_tx_frm_has_freq(struct ath10k *ar)
M
Michal Kazior 已提交
3486 3487 3488 3489 3490 3491 3492
{
	/* 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.
	 */
3493
	return (ar->htt.target_version_major >= 3 &&
3494
		ar->htt.target_version_minor >= 4 &&
3495
		ar->running_fw->fw_file.htt_op_version == ATH10K_FW_HTT_OP_VERSION_TLV);
M
Michal Kazior 已提交
3496 3497
}

3498
static int ath10k_mac_tx_wmi_mgmt(struct ath10k *ar, struct sk_buff *skb)
3499
{
3500
	struct sk_buff_head *q = &ar->wmi_mgmt_tx_queue;
3501
	int ret = 0;
3502

3503 3504 3505 3506 3507 3508
	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;
M
Michal Kazior 已提交
3509 3510
	}

3511 3512
	__skb_queue_tail(q, skb);
	ieee80211_queue_work(ar->hw, &ar->wmi_mgmt_tx_work);
3513

3514 3515 3516 3517 3518 3519
unlock:
	spin_unlock_bh(&ar->data_lock);

	return ret;
}

M
Michal Kazior 已提交
3520 3521 3522 3523
static enum ath10k_mac_tx_path
ath10k_mac_tx_h_get_txpath(struct ath10k *ar,
			   struct sk_buff *skb,
			   enum ath10k_hw_txrx_mode txmode)
3524
{
M
Michal Kazior 已提交
3525
	switch (txmode) {
3526 3527 3528
	case ATH10K_HW_TXRX_RAW:
	case ATH10K_HW_TXRX_NATIVE_WIFI:
	case ATH10K_HW_TXRX_ETHERNET:
M
Michal Kazior 已提交
3529
		return ATH10K_MAC_TX_HTT;
3530 3531
	case ATH10K_HW_TXRX_MGMT:
		if (test_bit(ATH10K_FW_FEATURE_HAS_WMI_MGMT_TX,
3532
			     ar->running_fw->fw_file.fw_features))
M
Michal Kazior 已提交
3533
			return ATH10K_MAC_TX_WMI_MGMT;
3534
		else if (ar->htt.target_version_major >= 3)
M
Michal Kazior 已提交
3535
			return ATH10K_MAC_TX_HTT;
3536
		else
M
Michal Kazior 已提交
3537 3538 3539 3540 3541 3542 3543 3544
			return ATH10K_MAC_TX_HTT_MGMT;
	}

	return ATH10K_MAC_TX_UNKNOWN;
}

static int ath10k_mac_tx_submit(struct ath10k *ar,
				enum ath10k_hw_txrx_mode txmode,
3545
				enum ath10k_mac_tx_path txpath,
M
Michal Kazior 已提交
3546 3547 3548
				struct sk_buff *skb)
{
	struct ath10k_htt *htt = &ar->htt;
3549
	int ret = -EINVAL;
M
Michal Kazior 已提交
3550 3551 3552 3553 3554 3555 3556 3557 3558 3559 3560 3561 3562 3563

	switch (txpath) {
	case ATH10K_MAC_TX_HTT:
		ret = ath10k_htt_tx(htt, txmode, skb);
		break;
	case ATH10K_MAC_TX_HTT_MGMT:
		ret = ath10k_htt_mgmt_tx(htt, skb);
		break;
	case ATH10K_MAC_TX_WMI_MGMT:
		ret = ath10k_mac_tx_wmi_mgmt(ar, skb);
		break;
	case ATH10K_MAC_TX_UNKNOWN:
		WARN_ON_ONCE(1);
		ret = -EINVAL;
3564
		break;
3565
	}
3566 3567

	if (ret) {
3568 3569
		ath10k_warn(ar, "failed to transmit packet, dropping: %d\n",
			    ret);
3570 3571
		ieee80211_free_txskb(ar->hw, skb);
	}
M
Michal Kazior 已提交
3572 3573 3574 3575 3576 3577 3578 3579 3580 3581

	return ret;
}

/* This function consumes the sk_buff regardless of return value as far as
 * caller is concerned so no freeing is necessary afterwards.
 */
static int ath10k_mac_tx(struct ath10k *ar,
			 struct ieee80211_vif *vif,
			 enum ath10k_hw_txrx_mode txmode,
3582
			 enum ath10k_mac_tx_path txpath,
M
Michal Kazior 已提交
3583 3584 3585 3586 3587 3588 3589 3590 3591 3592 3593 3594 3595 3596 3597 3598 3599 3600 3601 3602 3603 3604 3605 3606 3607 3608 3609 3610 3611 3612
			 struct sk_buff *skb)
{
	struct ieee80211_hw *hw = ar->hw;
	struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
	int ret;

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

	switch (txmode) {
	case ATH10K_HW_TXRX_MGMT:
	case ATH10K_HW_TXRX_NATIVE_WIFI:
		ath10k_tx_h_nwifi(hw, skb);
		ath10k_tx_h_add_p2p_noa_ie(ar, vif, skb);
		ath10k_tx_h_seq_no(vif, skb);
		break;
	case ATH10K_HW_TXRX_ETHERNET:
		ath10k_tx_h_8023(skb);
		break;
	case ATH10K_HW_TXRX_RAW:
		if (!test_bit(ATH10K_FLAG_RAW_MODE, &ar->dev_flags)) {
			WARN_ON_ONCE(1);
			ieee80211_free_txskb(hw, skb);
			return -ENOTSUPP;
		}
	}

	if (info->flags & IEEE80211_TX_CTL_TX_OFFCHAN) {
		if (!ath10k_mac_tx_frm_has_freq(ar)) {
3613
			ath10k_dbg(ar, ATH10K_DBG_MAC, "queued offchannel skb %pK\n",
M
Michal Kazior 已提交
3614 3615 3616 3617 3618 3619 3620 3621
				   skb);

			skb_queue_tail(&ar->offchan_tx_queue, skb);
			ieee80211_queue_work(hw, &ar->offchan_tx_work);
			return 0;
		}
	}

3622
	ret = ath10k_mac_tx_submit(ar, txmode, txpath, skb);
M
Michal Kazior 已提交
3623 3624 3625 3626 3627 3628
	if (ret) {
		ath10k_warn(ar, "failed to submit frame: %d\n", ret);
		return ret;
	}

	return 0;
3629 3630 3631 3632 3633 3634 3635 3636 3637 3638 3639 3640 3641 3642 3643 3644 3645 3646 3647
}

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;
M
Michal Kazior 已提交
3648
	struct ath10k_vif *arvif;
M
Michal Kazior 已提交
3649
	enum ath10k_hw_txrx_mode txmode;
3650
	enum ath10k_mac_tx_path txpath;
3651
	struct ieee80211_hdr *hdr;
M
Michal Kazior 已提交
3652 3653
	struct ieee80211_vif *vif;
	struct ieee80211_sta *sta;
3654 3655 3656 3657
	struct sk_buff *skb;
	const u8 *peer_addr;
	int vdev_id;
	int ret;
3658
	unsigned long time_left;
3659
	bool tmp_peer_created = false;
3660 3661 3662 3663 3664 3665 3666 3667 3668 3669 3670 3671 3672 3673 3674

	/* 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);

3675
		ath10k_dbg(ar, ATH10K_DBG_MAC, "mac offchannel skb %pK\n",
3676 3677 3678 3679 3680 3681
			   skb);

		hdr = (struct ieee80211_hdr *)skb->data;
		peer_addr = ieee80211_get_DA(hdr);

		spin_lock_bh(&ar->data_lock);
3682
		vdev_id = ar->scan.vdev_id;
3683 3684 3685 3686
		peer = ath10k_peer_find(ar, vdev_id, peer_addr);
		spin_unlock_bh(&ar->data_lock);

		if (peer)
K
Kalle Valo 已提交
3687
			/* FIXME: should this use ath10k_warn()? */
3688
			ath10k_dbg(ar, ATH10K_DBG_MAC, "peer %pM on vdev %d already present\n",
3689 3690 3691
				   peer_addr, vdev_id);

		if (!peer) {
M
Michal Kazior 已提交
3692 3693
			ret = ath10k_peer_create(ar, NULL, NULL, vdev_id,
						 peer_addr,
3694
						 WMI_PEER_TYPE_DEFAULT);
3695
			if (ret)
3696
				ath10k_warn(ar, "failed to create peer %pM on vdev %d: %d\n",
3697
					    peer_addr, vdev_id, ret);
3698
			tmp_peer_created = (ret == 0);
3699 3700 3701
		}

		spin_lock_bh(&ar->data_lock);
3702
		reinit_completion(&ar->offchan_tx_completed);
3703 3704 3705
		ar->offchan_tx_skb = skb;
		spin_unlock_bh(&ar->data_lock);

M
Michal Kazior 已提交
3706 3707 3708 3709 3710 3711 3712 3713 3714 3715 3716 3717 3718 3719
		/* It's safe to access vif and sta - conf_mutex guarantees that
		 * sta_state() and remove_interface() are locked exclusively
		 * out wrt to this offchannel worker.
		 */
		arvif = ath10k_get_arvif(ar, vdev_id);
		if (arvif) {
			vif = arvif->vif;
			sta = ieee80211_find_sta(vif, peer_addr);
		} else {
			vif = NULL;
			sta = NULL;
		}

		txmode = ath10k_mac_tx_h_get_txmode(ar, vif, sta, skb);
3720
		txpath = ath10k_mac_tx_h_get_txpath(ar, skb, txmode);
M
Michal Kazior 已提交
3721

3722
		ret = ath10k_mac_tx(ar, vif, txmode, txpath, skb);
M
Michal Kazior 已提交
3723 3724 3725 3726 3727
		if (ret) {
			ath10k_warn(ar, "failed to transmit offchannel frame: %d\n",
				    ret);
			/* not serious */
		}
3728

3729 3730 3731
		time_left =
		wait_for_completion_timeout(&ar->offchan_tx_completed, 3 * HZ);
		if (time_left == 0)
3732
			ath10k_warn(ar, "timed out waiting for offchannel skb %pK\n",
3733 3734
				    skb);

3735
		if (!peer && tmp_peer_created) {
3736 3737
			ret = ath10k_peer_delete(ar, vdev_id, peer_addr);
			if (ret)
3738
				ath10k_warn(ar, "failed to delete peer %pM on vdev %d: %d\n",
3739 3740 3741 3742 3743 3744 3745
					    peer_addr, vdev_id, ret);
		}

		mutex_unlock(&ar->conf_mutex);
	}
}

3746 3747 3748 3749 3750 3751 3752 3753 3754 3755 3756 3757 3758 3759 3760 3761 3762 3763 3764 3765 3766 3767 3768 3769 3770
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);
3771
		if (ret) {
3772
			ath10k_warn(ar, "failed to transmit management frame via WMI: %d\n",
3773
				    ret);
3774 3775
			ieee80211_free_txskb(ar->hw, skb);
		}
3776 3777 3778
	}
}

M
Michal Kazior 已提交
3779 3780
static void ath10k_mac_txq_init(struct ieee80211_txq *txq)
{
3781
	struct ath10k_txq *artxq;
M
Michal Kazior 已提交
3782 3783 3784 3785

	if (!txq)
		return;

3786
	artxq = (void *)txq->drv_priv;
M
Michal Kazior 已提交
3787 3788 3789 3790 3791
	INIT_LIST_HEAD(&artxq->list);
}

static void ath10k_mac_txq_unref(struct ath10k *ar, struct ieee80211_txq *txq)
{
3792
	struct ath10k_txq *artxq;
M
Michal Kazior 已提交
3793 3794 3795
	struct ath10k_skb_cb *cb;
	struct sk_buff *msdu;
	int msdu_id;
M
Michal Kazior 已提交
3796 3797 3798 3799

	if (!txq)
		return;

3800
	artxq = (void *)txq->drv_priv;
M
Michal Kazior 已提交
3801 3802 3803 3804
	spin_lock_bh(&ar->txqs_lock);
	if (!list_empty(&artxq->list))
		list_del_init(&artxq->list);
	spin_unlock_bh(&ar->txqs_lock);
M
Michal Kazior 已提交
3805 3806 3807 3808 3809 3810 3811 3812

	spin_lock_bh(&ar->htt.tx_lock);
	idr_for_each_entry(&ar->htt.pending_tx, msdu, msdu_id) {
		cb = ATH10K_SKB_CB(msdu);
		if (cb->txq == txq)
			cb->txq = NULL;
	}
	spin_unlock_bh(&ar->htt.tx_lock);
M
Michal Kazior 已提交
3813 3814
}

M
Michal Kazior 已提交
3815 3816 3817 3818 3819 3820 3821 3822 3823 3824 3825 3826
struct ieee80211_txq *ath10k_mac_txq_lookup(struct ath10k *ar,
					    u16 peer_id,
					    u8 tid)
{
	struct ath10k_peer *peer;

	lockdep_assert_held(&ar->data_lock);

	peer = ar->peer_map[peer_id];
	if (!peer)
		return NULL;

3827 3828 3829
	if (peer->removed)
		return NULL;

M
Michal Kazior 已提交
3830 3831 3832 3833 3834 3835 3836 3837
	if (peer->sta)
		return peer->sta->txq[tid];
	else if (peer->vif)
		return peer->vif->txq;
	else
		return NULL;
}

M
Michal Kazior 已提交
3838 3839 3840
static bool ath10k_mac_tx_can_push(struct ieee80211_hw *hw,
				   struct ieee80211_txq *txq)
{
M
Michal Kazior 已提交
3841 3842 3843 3844 3845 3846 3847 3848 3849 3850 3851 3852 3853 3854 3855
	struct ath10k *ar = hw->priv;
	struct ath10k_txq *artxq = (void *)txq->drv_priv;

	/* No need to get locks */

	if (ar->htt.tx_q_state.mode == HTT_TX_MODE_SWITCH_PUSH)
		return true;

	if (ar->htt.num_pending_tx < ar->htt.tx_q_state.num_push_allowed)
		return true;

	if (artxq->num_fw_queued < artxq->num_push_allowed)
		return true;

	return false;
M
Michal Kazior 已提交
3856 3857
}

M
Michal Kazior 已提交
3858 3859
int ath10k_mac_tx_push_txq(struct ieee80211_hw *hw,
			   struct ieee80211_txq *txq)
M
Michal Kazior 已提交
3860 3861 3862
{
	struct ath10k *ar = hw->priv;
	struct ath10k_htt *htt = &ar->htt;
3863
	struct ath10k_txq *artxq = (void *)txq->drv_priv;
M
Michal Kazior 已提交
3864 3865 3866 3867 3868
	struct ieee80211_vif *vif = txq->vif;
	struct ieee80211_sta *sta = txq->sta;
	enum ath10k_hw_txrx_mode txmode;
	enum ath10k_mac_tx_path txpath;
	struct sk_buff *skb;
3869
	struct ieee80211_hdr *hdr;
M
Michal Kazior 已提交
3870
	size_t skb_len;
3871
	bool is_mgmt, is_presp;
M
Michal Kazior 已提交
3872 3873 3874
	int ret;

	spin_lock_bh(&ar->htt.tx_lock);
3875
	ret = ath10k_htt_tx_inc_pending(htt);
M
Michal Kazior 已提交
3876 3877 3878 3879 3880 3881 3882 3883
	spin_unlock_bh(&ar->htt.tx_lock);

	if (ret)
		return ret;

	skb = ieee80211_tx_dequeue(hw, txq);
	if (!skb) {
		spin_lock_bh(&ar->htt.tx_lock);
3884
		ath10k_htt_tx_dec_pending(htt);
M
Michal Kazior 已提交
3885 3886 3887 3888 3889
		spin_unlock_bh(&ar->htt.tx_lock);

		return -ENOENT;
	}

M
Michal Kazior 已提交
3890
	ath10k_mac_tx_h_fill_cb(ar, vif, txq, skb);
M
Michal Kazior 已提交
3891

M
Michal Kazior 已提交
3892
	skb_len = skb->len;
M
Michal Kazior 已提交
3893 3894
	txmode = ath10k_mac_tx_h_get_txmode(ar, vif, sta, skb);
	txpath = ath10k_mac_tx_h_get_txpath(ar, skb, txmode);
3895 3896 3897 3898 3899 3900 3901 3902 3903 3904 3905 3906 3907 3908 3909 3910
	is_mgmt = (txpath == ATH10K_MAC_TX_HTT_MGMT);

	if (is_mgmt) {
		hdr = (struct ieee80211_hdr *)skb->data;
		is_presp = ieee80211_is_probe_resp(hdr->frame_control);

		spin_lock_bh(&ar->htt.tx_lock);
		ret = ath10k_htt_tx_mgmt_inc_pending(htt, is_mgmt, is_presp);

		if (ret) {
			ath10k_htt_tx_dec_pending(htt);
			spin_unlock_bh(&ar->htt.tx_lock);
			return ret;
		}
		spin_unlock_bh(&ar->htt.tx_lock);
	}
M
Michal Kazior 已提交
3911

3912
	ret = ath10k_mac_tx(ar, vif, txmode, txpath, skb);
M
Michal Kazior 已提交
3913 3914 3915 3916
	if (unlikely(ret)) {
		ath10k_warn(ar, "failed to push frame: %d\n", ret);

		spin_lock_bh(&ar->htt.tx_lock);
3917
		ath10k_htt_tx_dec_pending(htt);
3918 3919
		if (is_mgmt)
			ath10k_htt_tx_mgmt_dec_pending(htt);
M
Michal Kazior 已提交
3920 3921 3922 3923 3924
		spin_unlock_bh(&ar->htt.tx_lock);

		return ret;
	}

3925 3926 3927 3928
	spin_lock_bh(&ar->htt.tx_lock);
	artxq->num_fw_queued++;
	spin_unlock_bh(&ar->htt.tx_lock);

M
Michal Kazior 已提交
3929
	return skb_len;
M
Michal Kazior 已提交
3930 3931 3932 3933 3934 3935 3936 3937 3938 3939 3940
}

void ath10k_mac_tx_push_pending(struct ath10k *ar)
{
	struct ieee80211_hw *hw = ar->hw;
	struct ieee80211_txq *txq;
	struct ath10k_txq *artxq;
	struct ath10k_txq *last;
	int ret;
	int max;

M
Michal Kazior 已提交
3941 3942 3943
	if (ar->htt.num_pending_tx >= (ar->htt.max_num_pending_tx / 2))
		return;

M
Michal Kazior 已提交
3944 3945 3946 3947 3948 3949 3950 3951 3952 3953 3954
	spin_lock_bh(&ar->txqs_lock);
	rcu_read_lock();

	last = list_last_entry(&ar->txqs, struct ath10k_txq, list);
	while (!list_empty(&ar->txqs)) {
		artxq = list_first_entry(&ar->txqs, struct ath10k_txq, list);
		txq = container_of((void *)artxq, struct ieee80211_txq,
				   drv_priv);

		/* Prevent aggressive sta/tid taking over tx queue */
		max = 16;
3955 3956
		ret = 0;
		while (ath10k_mac_tx_can_push(hw, txq) && max--) {
M
Michal Kazior 已提交
3957 3958 3959 3960 3961 3962
			ret = ath10k_mac_tx_push_txq(hw, txq);
			if (ret < 0)
				break;
		}

		list_del_init(&artxq->list);
M
Michal Kazior 已提交
3963 3964 3965
		if (ret != -ENOENT)
			list_add_tail(&artxq->list, &ar->txqs);

3966
		ath10k_htt_tx_txq_update(hw, txq);
M
Michal Kazior 已提交
3967

M
Michal Kazior 已提交
3968
		if (artxq == last || (ret < 0 && ret != -ENOENT))
M
Michal Kazior 已提交
3969 3970 3971 3972 3973 3974 3975
			break;
	}

	rcu_read_unlock();
	spin_unlock_bh(&ar->txqs_lock);
}

3976 3977 3978 3979
/************/
/* Scanning */
/************/

3980
void __ath10k_scan_finish(struct ath10k *ar)
3981
{
3982
	lockdep_assert_held(&ar->data_lock);
3983

3984 3985 3986 3987
	switch (ar->scan.state) {
	case ATH10K_SCAN_IDLE:
		break;
	case ATH10K_SCAN_RUNNING:
3988
	case ATH10K_SCAN_ABORTING:
3989 3990 3991 3992 3993 3994 3995 3996
		if (!ar->scan.is_roc) {
			struct cfg80211_scan_info info = {
				.aborted = (ar->scan.state ==
					    ATH10K_SCAN_ABORTING),
			};

			ieee80211_scan_completed(ar->hw, &info);
		} else if (ar->scan.roc_notify) {
3997
			ieee80211_remain_on_channel_expired(ar->hw);
3998
		}
3999 4000 4001 4002
		/* fall through */
	case ATH10K_SCAN_STARTING:
		ar->scan.state = ATH10K_SCAN_IDLE;
		ar->scan_channel = NULL;
M
Michal Kazior 已提交
4003
		ar->scan.roc_freq = 0;
4004 4005
		ath10k_offchan_tx_purge(ar);
		cancel_delayed_work(&ar->scan.timeout);
4006
		complete(&ar->scan.completed);
4007
		break;
4008
	}
4009
}
4010

4011 4012 4013 4014
void ath10k_scan_finish(struct ath10k *ar)
{
	spin_lock_bh(&ar->data_lock);
	__ath10k_scan_finish(ar);
4015 4016 4017
	spin_unlock_bh(&ar->data_lock);
}

4018
static int ath10k_scan_stop(struct ath10k *ar)
4019 4020 4021 4022 4023 4024 4025 4026 4027 4028 4029 4030
{
	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) {
4031
		ath10k_warn(ar, "failed to stop wmi scan: %d\n", ret);
4032
		goto out;
4033 4034
	}

4035
	ret = wait_for_completion_timeout(&ar->scan.completed, 3 * HZ);
4036
	if (ret == 0) {
4037
		ath10k_warn(ar, "failed to receive scan abortion completion: timed out\n");
4038 4039 4040 4041
		ret = -ETIMEDOUT;
	} else if (ret > 0) {
		ret = 0;
	}
4042

4043 4044 4045 4046 4047 4048 4049 4050 4051 4052 4053 4054 4055 4056 4057 4058 4059 4060 4061 4062 4063
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);
4064 4065

	spin_lock_bh(&ar->data_lock);
4066 4067 4068 4069 4070 4071 4072 4073 4074

	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:
4075
		ath10k_warn(ar, "refusing scan abortion due to invalid scan state: %s (%d)\n",
4076 4077 4078 4079 4080 4081 4082 4083 4084
			    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)
4085
			ath10k_warn(ar, "failed to abort scan: %d\n", ret);
4086 4087 4088

		spin_lock_bh(&ar->data_lock);
		break;
4089
	}
4090

4091
	spin_unlock_bh(&ar->data_lock);
4092
}
4093

4094 4095 4096 4097 4098 4099 4100 4101
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);
4102 4103 4104 4105 4106 4107 4108 4109 4110 4111 4112 4113 4114
}

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;

4115
	ret = wait_for_completion_timeout(&ar->scan.started, 1 * HZ);
4116
	if (ret == 0) {
4117 4118
		ret = ath10k_scan_stop(ar);
		if (ret)
4119
			ath10k_warn(ar, "failed to stop scan: %d\n", ret);
4120 4121

		return -ETIMEDOUT;
4122 4123
	}

4124 4125 4126 4127 4128 4129 4130 4131 4132 4133 4134
	/* 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);

4135 4136 4137 4138 4139 4140 4141
	return 0;
}

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

M
Michal Kazior 已提交
4142 4143 4144
static void ath10k_mac_op_tx(struct ieee80211_hw *hw,
			     struct ieee80211_tx_control *control,
			     struct sk_buff *skb)
4145
{
M
Michal Kazior 已提交
4146
	struct ath10k *ar = hw->priv;
4147
	struct ath10k_htt *htt = &ar->htt;
4148
	struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
M
Michal Kazior 已提交
4149
	struct ieee80211_vif *vif = info->control.vif;
4150
	struct ieee80211_sta *sta = control->sta;
M
Michal Kazior 已提交
4151
	struct ieee80211_txq *txq = NULL;
4152
	struct ieee80211_hdr *hdr = (void *)skb->data;
M
Michal Kazior 已提交
4153
	enum ath10k_hw_txrx_mode txmode;
4154 4155 4156 4157
	enum ath10k_mac_tx_path txpath;
	bool is_htt;
	bool is_mgmt;
	bool is_presp;
M
Michal Kazior 已提交
4158
	int ret;
4159

M
Michal Kazior 已提交
4160
	ath10k_mac_tx_h_fill_cb(ar, vif, txq, skb);
4161

M
Michal Kazior 已提交
4162
	txmode = ath10k_mac_tx_h_get_txmode(ar, vif, sta, skb);
4163 4164 4165
	txpath = ath10k_mac_tx_h_get_txpath(ar, skb, txmode);
	is_htt = (txpath == ATH10K_MAC_TX_HTT ||
		  txpath == ATH10K_MAC_TX_HTT_MGMT);
4166
	is_mgmt = (txpath == ATH10K_MAC_TX_HTT_MGMT);
4167

4168 4169 4170 4171
	if (is_htt) {
		spin_lock_bh(&ar->htt.tx_lock);
		is_presp = ieee80211_is_probe_resp(hdr->frame_control);

4172
		ret = ath10k_htt_tx_inc_pending(htt);
4173 4174 4175 4176 4177 4178 4179 4180
		if (ret) {
			ath10k_warn(ar, "failed to increase tx pending count: %d, dropping\n",
				    ret);
			spin_unlock_bh(&ar->htt.tx_lock);
			ieee80211_free_txskb(ar->hw, skb);
			return;
		}

4181 4182
		ret = ath10k_htt_tx_mgmt_inc_pending(htt, is_mgmt, is_presp);
		if (ret) {
4183 4184
			ath10k_dbg(ar, ATH10K_DBG_MAC, "failed to increase tx mgmt pending count: %d, dropping\n",
				   ret);
4185 4186 4187 4188 4189
			ath10k_htt_tx_dec_pending(htt);
			spin_unlock_bh(&ar->htt.tx_lock);
			ieee80211_free_txskb(ar->hw, skb);
			return;
		}
4190 4191 4192
		spin_unlock_bh(&ar->htt.tx_lock);
	}

4193
	ret = ath10k_mac_tx(ar, vif, txmode, txpath, skb);
4194
	if (ret) {
M
Michal Kazior 已提交
4195
		ath10k_warn(ar, "failed to transmit frame: %d\n", ret);
4196 4197
		if (is_htt) {
			spin_lock_bh(&ar->htt.tx_lock);
4198 4199 4200
			ath10k_htt_tx_dec_pending(htt);
			if (is_mgmt)
				ath10k_htt_tx_mgmt_dec_pending(htt);
4201 4202 4203 4204
			spin_unlock_bh(&ar->htt.tx_lock);
		}
		return;
	}
4205 4206
}

M
Michal Kazior 已提交
4207 4208 4209 4210 4211
static void ath10k_mac_op_wake_tx_queue(struct ieee80211_hw *hw,
					struct ieee80211_txq *txq)
{
	struct ath10k *ar = hw->priv;
	struct ath10k_txq *artxq = (void *)txq->drv_priv;
4212 4213 4214 4215
	struct ieee80211_txq *f_txq;
	struct ath10k_txq *f_artxq;
	int ret = 0;
	int max = 16;
M
Michal Kazior 已提交
4216

4217 4218 4219
	spin_lock_bh(&ar->txqs_lock);
	if (list_empty(&artxq->list))
		list_add_tail(&artxq->list, &ar->txqs);
4220 4221 4222 4223 4224 4225 4226 4227 4228 4229 4230 4231

	f_artxq = list_first_entry(&ar->txqs, struct ath10k_txq, list);
	f_txq = container_of((void *)f_artxq, struct ieee80211_txq, drv_priv);
	list_del_init(&f_artxq->list);

	while (ath10k_mac_tx_can_push(hw, f_txq) && max--) {
		ret = ath10k_mac_tx_push_txq(hw, f_txq);
		if (ret)
			break;
	}
	if (ret != -ENOENT)
		list_add_tail(&f_artxq->list, &ar->txqs);
4232
	spin_unlock_bh(&ar->txqs_lock);
M
Michal Kazior 已提交
4233

4234
	ath10k_htt_tx_txq_update(hw, f_txq);
4235
	ath10k_htt_tx_txq_update(hw, txq);
M
Michal Kazior 已提交
4236 4237
}

4238
/* Must not be called with conf_mutex held as workers can use that also. */
M
Michal Kazior 已提交
4239
void ath10k_drain_tx(struct ath10k *ar)
4240 4241 4242 4243 4244 4245 4246 4247 4248 4249 4250
{
	/* 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);
}

4251
void ath10k_halt(struct ath10k *ar)
4252
{
4253 4254
	struct ath10k_vif *arvif;

4255 4256
	lockdep_assert_held(&ar->conf_mutex);

4257 4258 4259
	clear_bit(ATH10K_CAC_RUNNING, &ar->dev_flags);
	ar->filter_flags = 0;
	ar->monitor = false;
M
Michal Kazior 已提交
4260
	ar->monitor_arvif = NULL;
4261 4262

	if (ar->monitor_started)
M
Michal Kazior 已提交
4263
		ath10k_monitor_stop(ar);
4264 4265

	ar->monitor_started = false;
M
Michal Kazior 已提交
4266
	ar->tx_paused = 0;
M
Michal Kazior 已提交
4267

4268
	ath10k_scan_finish(ar);
4269 4270 4271 4272 4273
	ath10k_peer_cleanup_all(ar);
	ath10k_core_stop(ar);
	ath10k_hif_power_down(ar);

	spin_lock_bh(&ar->data_lock);
4274 4275
	list_for_each_entry(arvif, &ar->arvifs, list)
		ath10k_mac_vif_beacon_cleanup(arvif);
4276 4277 4278
	spin_unlock_bh(&ar->data_lock);
}

4279 4280 4281 4282 4283 4284
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);

4285 4286
	*tx_ant = ar->cfg_tx_chainmask;
	*rx_ant = ar->cfg_rx_chainmask;
4287 4288 4289 4290 4291 4292

	mutex_unlock(&ar->conf_mutex);

	return 0;
}

4293 4294 4295 4296 4297 4298 4299 4300 4301 4302 4303 4304 4305
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);
}

4306 4307 4308 4309 4310 4311 4312 4313 4314 4315 4316 4317 4318 4319 4320 4321 4322 4323 4324 4325 4326 4327 4328 4329 4330 4331 4332 4333 4334 4335 4336 4337 4338 4339 4340 4341 4342 4343 4344 4345 4346 4347 4348 4349 4350 4351 4352 4353 4354 4355 4356 4357 4358 4359 4360 4361 4362 4363 4364 4365 4366
static int ath10k_mac_get_vht_cap_bf_sts(struct ath10k *ar)
{
	int nsts = ar->vht_cap_info;

	nsts &= IEEE80211_VHT_CAP_BEAMFORMEE_STS_MASK;
	nsts >>= IEEE80211_VHT_CAP_BEAMFORMEE_STS_SHIFT;

	/* If firmware does not deliver to host number of space-time
	 * streams supported, assume it support up to 4 BF STS and return
	 * the value for VHT CAP: nsts-1)
	 */
	if (nsts == 0)
		return 3;

	return nsts;
}

static int ath10k_mac_get_vht_cap_bf_sound_dim(struct ath10k *ar)
{
	int sound_dim = ar->vht_cap_info;

	sound_dim &= IEEE80211_VHT_CAP_SOUNDING_DIMENSIONS_MASK;
	sound_dim >>= IEEE80211_VHT_CAP_SOUNDING_DIMENSIONS_SHIFT;

	/* If the sounding dimension is not advertised by the firmware,
	 * let's use a default value of 1
	 */
	if (sound_dim == 0)
		return 1;

	return sound_dim;
}

static struct ieee80211_sta_vht_cap ath10k_create_vht_cap(struct ath10k *ar)
{
	struct ieee80211_sta_vht_cap vht_cap = {0};
	u16 mcs_map;
	u32 val;
	int i;

	vht_cap.vht_supported = 1;
	vht_cap.cap = ar->vht_cap_info;

	if (ar->vht_cap_info & (IEEE80211_VHT_CAP_SU_BEAMFORMEE_CAPABLE |
				IEEE80211_VHT_CAP_MU_BEAMFORMEE_CAPABLE)) {
		val = ath10k_mac_get_vht_cap_bf_sts(ar);
		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 = ath10k_mac_get_vht_cap_bf_sound_dim(ar);
		val <<= IEEE80211_VHT_CAP_SOUNDING_DIMENSIONS_SHIFT;
		val &= IEEE80211_VHT_CAP_SOUNDING_DIMENSIONS_MASK;

		vht_cap.cap |= val;
	}

4367 4368 4369 4370 4371 4372 4373
	/* Currently the firmware seems to be buggy, don't enable 80+80
	 * mode until that's resolved.
	 */
	if ((ar->vht_cap_info & IEEE80211_VHT_CAP_SHORT_GI_160) &&
	    !(ar->vht_cap_info & IEEE80211_VHT_CAP_SUPP_CHAN_WIDTH_160_80PLUS80MHZ))
		vht_cap.cap |= IEEE80211_VHT_CAP_SUPP_CHAN_WIDTH_160MHZ;

4374 4375 4376 4377 4378 4379 4380 4381
	mcs_map = 0;
	for (i = 0; i < 8; i++) {
		if ((i < ar->num_rf_chains) && (ar->cfg_tx_chainmask & BIT(i)))
			mcs_map |= IEEE80211_VHT_MCS_SUPPORT_0_9 << (i * 2);
		else
			mcs_map |= IEEE80211_VHT_MCS_NOT_SUPPORTED << (i * 2);
	}

4382 4383 4384
	if (ar->cfg_tx_chainmask <= 1)
		vht_cap.cap &= ~IEEE80211_VHT_CAP_TXSTBC;

4385 4386 4387 4388 4389 4390 4391 4392 4393 4394 4395 4396 4397 4398 4399 4400 4401 4402 4403
	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;
4404 4405
	ht_cap.cap |=
		WLAN_HT_CAP_SM_PS_DISABLED << IEEE80211_HT_CAP_SM_PS_SHIFT;
4406 4407 4408 4409 4410 4411 4412 4413 4414 4415 4416 4417 4418 4419 4420 4421

	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;
	}

4422
	if (ar->ht_cap_info & WMI_HT_CAP_TX_STBC && (ar->cfg_tx_chainmask > 1))
4423 4424 4425 4426 4427 4428 4429 4430 4431 4432 4433 4434 4435 4436 4437 4438 4439 4440 4441 4442 4443 4444 4445 4446 4447 4448 4449 4450 4451 4452 4453 4454 4455 4456
		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;

	for (i = 0; i < ar->num_rf_chains; i++) {
		if (ar->cfg_rx_chainmask & BIT(i))
			ht_cap.mcs.rx_mask[i] = 0xFF;
	}

	ht_cap.mcs.tx_params |= IEEE80211_HT_MCS_TX_DEFINED;

	return ht_cap;
}

4457 4458 4459 4460 4461 4462 4463 4464 4465 4466
static void ath10k_mac_setup_ht_vht_cap(struct ath10k *ar)
{
	struct ieee80211_supported_band *band;
	struct ieee80211_sta_vht_cap vht_cap;
	struct ieee80211_sta_ht_cap ht_cap;

	ht_cap = ath10k_get_ht_cap(ar);
	vht_cap = ath10k_create_vht_cap(ar);

	if (ar->phy_capability & WHAL_WLAN_11G_CAPABILITY) {
4467
		band = &ar->mac.sbands[NL80211_BAND_2GHZ];
4468 4469 4470
		band->ht_cap = ht_cap;
	}
	if (ar->phy_capability & WHAL_WLAN_11A_CAPABILITY) {
4471
		band = &ar->mac.sbands[NL80211_BAND_5GHZ];
4472 4473 4474 4475 4476
		band->ht_cap = ht_cap;
		band->vht_cap = vht_cap;
	}
}

4477 4478 4479 4480 4481 4482
static int __ath10k_set_antenna(struct ath10k *ar, u32 tx_ant, u32 rx_ant)
{
	int ret;

	lockdep_assert_held(&ar->conf_mutex);

4483 4484 4485
	ath10k_check_chain_mask(ar, tx_ant, "tx");
	ath10k_check_chain_mask(ar, rx_ant, "rx");

4486 4487 4488 4489 4490 4491 4492 4493 4494 4495
	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) {
4496
		ath10k_warn(ar, "failed to set tx-chainmask: %d, req 0x%x\n",
4497 4498 4499 4500 4501 4502 4503
			    ret, tx_ant);
		return ret;
	}

	ret = ath10k_wmi_pdev_set_param(ar, ar->wmi.pdev_param->rx_chain_mask,
					rx_ant);
	if (ret) {
4504
		ath10k_warn(ar, "failed to set rx-chainmask: %d, req 0x%x\n",
4505 4506 4507 4508
			    ret, rx_ant);
		return ret;
	}

4509 4510 4511
	/* Reload HT/VHT capability */
	ath10k_mac_setup_ht_vht_cap(ar);

4512 4513 4514 4515 4516 4517 4518 4519 4520 4521 4522 4523 4524 4525
	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;
}

4526 4527 4528
static int ath10k_start(struct ieee80211_hw *hw)
{
	struct ath10k *ar = hw->priv;
4529
	u32 param;
4530
	int ret = 0;
4531

4532 4533
	/*
	 * This makes sense only when restarting hw. It is harmless to call
4534
	 * unconditionally. This is necessary to make sure no HTT/WMI tx
4535 4536 4537 4538
	 * commands will be submitted while restarting.
	 */
	ath10k_drain_tx(ar);

M
Michal Kazior 已提交
4539 4540
	mutex_lock(&ar->conf_mutex);

4541 4542 4543 4544 4545 4546 4547 4548 4549 4550 4551
	switch (ar->state) {
	case ATH10K_STATE_OFF:
		ar->state = ATH10K_STATE_ON;
		break;
	case ATH10K_STATE_RESTARTING:
		ar->state = ATH10K_STATE_RESTARTED;
		break;
	case ATH10K_STATE_ON:
	case ATH10K_STATE_RESTARTED:
	case ATH10K_STATE_WEDGED:
		WARN_ON(1);
4552
		ret = -EINVAL;
4553
		goto err;
K
Kalle Valo 已提交
4554 4555 4556
	case ATH10K_STATE_UTF:
		ret = -EBUSY;
		goto err;
4557 4558 4559 4560
	}

	ret = ath10k_hif_power_up(ar);
	if (ret) {
4561
		ath10k_err(ar, "Could not init hif: %d\n", ret);
4562
		goto err_off;
4563 4564
	}

4565 4566
	ret = ath10k_core_start(ar, ATH10K_FIRMWARE_MODE_NORMAL,
				&ar->normal_mode_fw);
4567
	if (ret) {
4568
		ath10k_err(ar, "Could not init core: %d\n", ret);
4569
		goto err_power_down;
4570 4571
	}

4572 4573
	param = ar->wmi.pdev_param->pmf_qos;
	ret = ath10k_wmi_pdev_set_param(ar, param, 1);
4574
	if (ret) {
4575
		ath10k_warn(ar, "failed to enable PMF QOS: %d\n", ret);
4576 4577
		goto err_core_stop;
	}
4578

4579 4580
	param = ar->wmi.pdev_param->dynamic_bw;
	ret = ath10k_wmi_pdev_set_param(ar, param, 1);
4581
	if (ret) {
4582
		ath10k_warn(ar, "failed to enable dynamic BW: %d\n", ret);
4583 4584
		goto err_core_stop;
	}
4585

4586 4587 4588 4589 4590 4591 4592 4593 4594
	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;
		}
	}

J
Janusz Dziedzic 已提交
4595
	if (test_bit(WMI_SERVICE_BURST, ar->wmi.svc_map)) {
4596 4597
		param = ar->wmi.pdev_param->burst_enable;
		ret = ath10k_wmi_pdev_set_param(ar, param, 0);
J
Janusz Dziedzic 已提交
4598 4599 4600 4601 4602 4603
		if (ret) {
			ath10k_warn(ar, "failed to disable burst: %d\n", ret);
			goto err_core_stop;
		}
	}

4604
	__ath10k_set_antenna(ar, ar->cfg_tx_chainmask, ar->cfg_rx_chainmask);
4605

4606 4607 4608 4609 4610 4611 4612 4613 4614
	/*
	 * 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.
	 */

4615 4616
	param = ar->wmi.pdev_param->arp_ac_override;
	ret = ath10k_wmi_pdev_set_param(ar, param, 0);
4617
	if (ret) {
4618
		ath10k_warn(ar, "failed to set arp ac override parameter: %d\n",
4619
			    ret);
4620
		goto err_core_stop;
4621 4622
	}

M
Maharaja 已提交
4623
	if (test_bit(ATH10K_FW_FEATURE_SUPPORTS_ADAPTIVE_CCA,
4624
		     ar->running_fw->fw_file.fw_features)) {
M
Maharaja 已提交
4625 4626 4627 4628 4629 4630 4631 4632 4633 4634
		ret = ath10k_wmi_pdev_enable_adaptive_cca(ar, 1,
							  WMI_CCA_DETECT_LEVEL_AUTO,
							  WMI_CCA_DETECT_MARGIN_AUTO);
		if (ret) {
			ath10k_warn(ar, "failed to enable adaptive cca: %d\n",
				    ret);
			goto err_core_stop;
		}
	}

4635 4636
	param = ar->wmi.pdev_param->ani_enable;
	ret = ath10k_wmi_pdev_set_param(ar, param, 1);
4637 4638 4639 4640 4641 4642
	if (ret) {
		ath10k_warn(ar, "failed to enable ani by default: %d\n",
			    ret);
		goto err_core_stop;
	}

4643 4644
	ar->ani_enabled = true;

4645
	if (ath10k_peer_stats_enabled(ar)) {
4646 4647 4648 4649 4650 4651 4652 4653 4654 4655 4656
		param = ar->wmi.pdev_param->peer_stats_update_period;
		ret = ath10k_wmi_pdev_set_param(ar, param,
						PEER_DEFAULT_STATS_UPDATE_PERIOD);
		if (ret) {
			ath10k_warn(ar,
				    "failed to set peer stats period : %d\n",
				    ret);
			goto err_core_stop;
		}
	}

4657 4658 4659 4660 4661 4662 4663 4664 4665 4666 4667 4668 4669
	param = ar->wmi.pdev_param->enable_btcoex;
	if (test_bit(WMI_SERVICE_COEX_GPIO, ar->wmi.svc_map) &&
	    test_bit(ATH10K_FW_FEATURE_BTCOEX_PARAM,
		     ar->running_fw->fw_file.fw_features)) {
		ret = ath10k_wmi_pdev_set_param(ar, param, 0);
		if (ret) {
			ath10k_warn(ar,
				    "failed to set btcoex param: %d\n", ret);
			goto err_core_stop;
		}
		clear_bit(ATH10K_FLAG_BTCOEX, &ar->dev_flags);
	}

4670
	ar->num_started_vdevs = 0;
4671 4672
	ath10k_regd_update(ar);

4673
	ath10k_spectral_start(ar);
4674
	ath10k_thermal_set_throttling(ar);
4675

4676 4677 4678 4679 4680 4681 4682 4683 4684 4685 4686 4687 4688
	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:
M
Michal Kazior 已提交
4689
	mutex_unlock(&ar->conf_mutex);
4690
	return ret;
4691 4692 4693 4694 4695 4696
}

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

4697 4698
	ath10k_drain_tx(ar);

M
Michal Kazior 已提交
4699
	mutex_lock(&ar->conf_mutex);
4700
	if (ar->state != ATH10K_STATE_OFF) {
4701
		ath10k_halt(ar);
4702 4703
		ar->state = ATH10K_STATE_OFF;
	}
M
Michal Kazior 已提交
4704 4705
	mutex_unlock(&ar->conf_mutex);

4706
	cancel_delayed_work_sync(&ar->scan.timeout);
4707
	cancel_work_sync(&ar->restart_work);
4708 4709
}

4710
static int ath10k_config_ps(struct ath10k *ar)
4711
{
4712 4713
	struct ath10k_vif *arvif;
	int ret = 0;
4714 4715 4716

	lockdep_assert_held(&ar->conf_mutex);

4717 4718 4719
	list_for_each_entry(arvif, &ar->arvifs, list) {
		ret = ath10k_mac_vif_setup_ps(arvif);
		if (ret) {
4720
			ath10k_warn(ar, "failed to setup powersave: %d\n", ret);
4721 4722 4723
			break;
		}
	}
4724

4725
	return ret;
4726 4727
}

4728 4729 4730 4731 4732 4733 4734 4735 4736 4737 4738 4739 4740 4741 4742 4743 4744 4745 4746 4747 4748 4749 4750 4751 4752 4753 4754 4755 4756 4757 4758 4759 4760 4761 4762 4763
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) {
4764 4765
		if (arvif->txpower <= 0)
			continue;
4766 4767 4768 4769 4770 4771 4772

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

4773 4774
	if (txpower == -1)
		return 0;
4775 4776 4777 4778 4779 4780 4781 4782 4783 4784 4785

	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;
}

4786 4787
static int ath10k_config(struct ieee80211_hw *hw, u32 changed)
{
4788 4789 4790 4791 4792 4793
	struct ath10k *ar = hw->priv;
	struct ieee80211_conf *conf = &hw->conf;
	int ret = 0;

	mutex_lock(&ar->conf_mutex);

4794 4795
	if (changed & IEEE80211_CONF_CHANGE_PS)
		ath10k_config_ps(ar);
4796 4797

	if (changed & IEEE80211_CONF_CHANGE_MONITOR) {
4798 4799 4800 4801
		ar->monitor = conf->flags & IEEE80211_CONF_MONITOR;
		ret = ath10k_monitor_recalc(ar);
		if (ret)
			ath10k_warn(ar, "failed to recalc monitor: %d\n", ret);
4802 4803 4804 4805 4806 4807
	}

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

4808 4809
static u32 get_nss_from_chainmask(u16 chain_mask)
{
4810
	if ((chain_mask & 0xf) == 0xf)
4811 4812 4813 4814 4815 4816 4817 4818
		return 4;
	else if ((chain_mask & 0x7) == 0x7)
		return 3;
	else if ((chain_mask & 0x3) == 0x3)
		return 2;
	return 1;
}

4819 4820 4821 4822
static int ath10k_mac_set_txbf_conf(struct ath10k_vif *arvif)
{
	u32 value = 0;
	struct ath10k *ar = arvif->ar;
4823
	int nsts;
4824
	int sound_dim;
4825 4826 4827 4828

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

4829
	nsts = ath10k_mac_get_vht_cap_bf_sts(ar);
4830 4831
	if (ar->vht_cap_info & (IEEE80211_VHT_CAP_SU_BEAMFORMEE_CAPABLE |
				IEEE80211_VHT_CAP_MU_BEAMFORMEE_CAPABLE))
4832
		value |= SM(nsts, WMI_TXBF_STS_CAP_OFFSET);
4833

4834
	sound_dim = ath10k_mac_get_vht_cap_bf_sound_dim(ar);
4835 4836
	if (ar->vht_cap_info & (IEEE80211_VHT_CAP_SU_BEAMFORMER_CAPABLE |
				IEEE80211_VHT_CAP_MU_BEAMFORMER_CAPABLE))
4837
		value |= SM(sound_dim, WMI_BF_SOUND_DIM_OFFSET);
4838 4839 4840 4841 4842 4843 4844 4845 4846 4847 4848 4849 4850 4851 4852 4853 4854 4855 4856 4857 4858 4859

	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);
}

4860 4861 4862 4863 4864 4865 4866 4867 4868 4869 4870
/*
 * 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;
4871
	struct ath10k_vif *arvif = (void *)vif->drv_priv;
4872
	struct ath10k_peer *peer;
4873 4874
	enum wmi_sta_powersave_param param;
	int ret = 0;
4875
	u32 value;
4876
	int bit;
M
Michal Kazior 已提交
4877
	int i;
4878
	u32 vdev_param;
4879

4880 4881
	vif->driver_flags |= IEEE80211_VIF_SUPPORTS_UAPSD;

4882 4883
	mutex_lock(&ar->conf_mutex);

4884
	memset(arvif, 0, sizeof(*arvif));
M
Michal Kazior 已提交
4885
	ath10k_mac_txq_init(vif->txq);
4886

4887 4888 4889
	arvif->ar = ar;
	arvif->vif = vif;

4890
	INIT_LIST_HEAD(&arvif->list);
4891
	INIT_WORK(&arvif->ap_csa_work, ath10k_mac_vif_ap_csa_work);
4892 4893
	INIT_DELAYED_WORK(&arvif->connection_loss_work,
			  ath10k_mac_vif_sta_connection_loss_work);
4894

4895 4896 4897 4898 4899 4900 4901
	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));
	}
4902

4903 4904
	if (ar->num_peers >= ar->max_num_peers) {
		ath10k_warn(ar, "refusing vdev creation due to insufficient peer entry resources in firmware\n");
4905 4906
		ret = -ENOBUFS;
		goto err;
4907 4908
	}

B
Ben Greear 已提交
4909
	if (ar->free_vdev_map == 0) {
4910
		ath10k_warn(ar, "Free vdev map is empty, no more interfaces allowed.\n");
4911
		ret = -EBUSY;
4912
		goto err;
4913
	}
B
Ben Greear 已提交
4914
	bit = __ffs64(ar->free_vdev_map);
4915

B
Ben Greear 已提交
4916 4917
	ath10k_dbg(ar, ATH10K_DBG_MAC, "mac create vdev %i map %llx\n",
		   bit, ar->free_vdev_map);
4918

B
Ben Greear 已提交
4919
	arvif->vdev_id = bit;
4920 4921
	arvif->vdev_subtype =
		ath10k_wmi_get_vdev_subtype(ar, WMI_VDEV_SUBTYPE_NONE);
4922 4923

	switch (vif->type) {
M
Michal Kazior 已提交
4924 4925
	case NL80211_IFTYPE_P2P_DEVICE:
		arvif->vdev_type = WMI_VDEV_TYPE_STA;
4926 4927
		arvif->vdev_subtype = ath10k_wmi_get_vdev_subtype
					(ar, WMI_VDEV_SUBTYPE_P2P_DEVICE);
M
Michal Kazior 已提交
4928
		break;
4929 4930 4931 4932
	case NL80211_IFTYPE_UNSPECIFIED:
	case NL80211_IFTYPE_STATION:
		arvif->vdev_type = WMI_VDEV_TYPE_STA;
		if (vif->p2p)
4933 4934
			arvif->vdev_subtype = ath10k_wmi_get_vdev_subtype
					(ar, WMI_VDEV_SUBTYPE_P2P_CLIENT);
4935 4936 4937 4938
		break;
	case NL80211_IFTYPE_ADHOC:
		arvif->vdev_type = WMI_VDEV_TYPE_IBSS;
		break;
B
Bob Copeland 已提交
4939
	case NL80211_IFTYPE_MESH_POINT:
4940
		if (test_bit(WMI_SERVICE_MESH_11S, ar->wmi.svc_map)) {
4941 4942
			arvif->vdev_subtype = ath10k_wmi_get_vdev_subtype
						(ar, WMI_VDEV_SUBTYPE_MESH_11S);
4943
		} else if (!test_bit(ATH10K_FLAG_RAW_MODE, &ar->dev_flags)) {
B
Bob Copeland 已提交
4944 4945 4946 4947 4948 4949
			ret = -EINVAL;
			ath10k_warn(ar, "must load driver with rawmode=1 to add mesh interfaces\n");
			goto err;
		}
		arvif->vdev_type = WMI_VDEV_TYPE_AP;
		break;
4950 4951 4952 4953
	case NL80211_IFTYPE_AP:
		arvif->vdev_type = WMI_VDEV_TYPE_AP;

		if (vif->p2p)
4954 4955
			arvif->vdev_subtype = ath10k_wmi_get_vdev_subtype
						(ar, WMI_VDEV_SUBTYPE_P2P_GO);
4956 4957 4958 4959 4960 4961 4962 4963 4964
		break;
	case NL80211_IFTYPE_MONITOR:
		arvif->vdev_type = WMI_VDEV_TYPE_MONITOR;
		break;
	default:
		WARN_ON(1);
		break;
	}

M
Michal Kazior 已提交
4965 4966 4967 4968 4969 4970 4971 4972 4973
	/* 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);

4974 4975 4976 4977 4978 4979 4980 4981 4982 4983 4984 4985 4986 4987 4988 4989 4990
	/* 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 ||
B
Bob Copeland 已提交
4991
	    vif->type == NL80211_IFTYPE_MESH_POINT ||
4992 4993 4994 4995
	    vif->type == NL80211_IFTYPE_AP) {
		arvif->beacon_buf = dma_zalloc_coherent(ar->dev,
							IEEE80211_MAX_FRAME_LEN,
							&arvif->beacon_paddr,
4996
							GFP_ATOMIC);
4997 4998 4999 5000 5001 5002 5003
		if (!arvif->beacon_buf) {
			ret = -ENOMEM;
			ath10k_warn(ar, "failed to allocate beacon buffer: %d\n",
				    ret);
			goto err;
		}
	}
5004 5005 5006 5007 5008 5009 5010 5011
	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;
	}
5012 5013 5014 5015

	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");
5016 5017 5018 5019

	ret = ath10k_wmi_vdev_create(ar, arvif->vdev_id, arvif->vdev_type,
				     arvif->vdev_subtype, vif->addr);
	if (ret) {
5020
		ath10k_warn(ar, "failed to create WMI vdev %i: %d\n",
5021
			    arvif->vdev_id, ret);
5022
		goto err;
5023 5024
	}

B
Ben Greear 已提交
5025
	ar->free_vdev_map &= ~(1LL << arvif->vdev_id);
5026
	spin_lock_bh(&ar->data_lock);
M
Michal Kazior 已提交
5027
	list_add(&arvif->list, &ar->arvifs);
5028
	spin_unlock_bh(&ar->data_lock);
5029

M
Michal Kazior 已提交
5030 5031 5032 5033
	/* 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);
5034
	if (ret) {
M
Michal Kazior 已提交
5035
		ath10k_warn(ar, "failed to disable keepalive on vdev %i: %d\n",
5036
			    arvif->vdev_id, ret);
5037 5038
		goto err_vdev_delete;
	}
5039

5040
	arvif->def_wep_key_idx = -1;
5041

5042 5043
	vdev_param = ar->wmi.vdev_param->tx_encap_type;
	ret = ath10k_wmi_vdev_set_param(ar, arvif->vdev_id, vdev_param,
5044
					ATH10K_HW_TXRX_NATIVE_WIFI);
5045
	/* 10.X firmware does not support this VDEV parameter. Do not warn */
5046
	if (ret && ret != -EOPNOTSUPP) {
5047
		ath10k_warn(ar, "failed to set vdev %i TX encapsulation: %d\n",
5048
			    arvif->vdev_id, ret);
5049 5050
		goto err_vdev_delete;
	}
5051

5052 5053 5054 5055
	/* Configuring number of spatial stream for monitor interface is causing
	 * target assert in qca9888 and qca6174.
	 */
	if (ar->cfg_tx_chainmask && (vif->type != NL80211_IFTYPE_MONITOR)) {
5056 5057 5058 5059 5060 5061 5062 5063 5064 5065 5066 5067 5068
		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;
		}
	}

5069 5070
	if (arvif->vdev_type == WMI_VDEV_TYPE_AP ||
	    arvif->vdev_type == WMI_VDEV_TYPE_IBSS) {
M
Michal Kazior 已提交
5071 5072
		ret = ath10k_peer_create(ar, vif, NULL, arvif->vdev_id,
					 vif->addr, WMI_PEER_TYPE_DEFAULT);
5073
		if (ret) {
5074
			ath10k_warn(ar, "failed to create vdev %i peer for AP/IBSS: %d\n",
5075
				    arvif->vdev_id, ret);
5076
			goto err_vdev_delete;
5077
		}
5078 5079 5080 5081 5082 5083 5084 5085 5086 5087 5088 5089 5090 5091 5092 5093 5094 5095

		spin_lock_bh(&ar->data_lock);

		peer = ath10k_peer_find(ar, arvif->vdev_id, vif->addr);
		if (!peer) {
			ath10k_warn(ar, "failed to lookup peer %pM on vdev %i\n",
				    vif->addr, arvif->vdev_id);
			spin_unlock_bh(&ar->data_lock);
			ret = -ENOENT;
			goto err_peer_delete;
		}

		arvif->peer_id = find_first_bit(peer->peer_ids,
						ATH10K_MAX_NUM_PEER_IDS);

		spin_unlock_bh(&ar->data_lock);
	} else {
		arvif->peer_id = HTT_INVALID_PEERID;
5096
	}
5097

5098
	if (arvif->vdev_type == WMI_VDEV_TYPE_AP) {
5099 5100
		ret = ath10k_mac_set_kickout(arvif);
		if (ret) {
5101
			ath10k_warn(ar, "failed to set vdev %i kickout parameters: %d\n",
5102
				    arvif->vdev_id, ret);
5103 5104
			goto err_peer_delete;
		}
5105 5106 5107 5108 5109 5110 5111
	}

	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);
5112
		if (ret) {
5113
			ath10k_warn(ar, "failed to set vdev %i RX wake policy: %d\n",
5114
				    arvif->vdev_id, ret);
5115 5116
			goto err_peer_delete;
		}
5117

M
Michal Kazior 已提交
5118
		ret = ath10k_mac_vif_recalc_ps_wake_threshold(arvif);
5119
		if (ret) {
M
Michal Kazior 已提交
5120
			ath10k_warn(ar, "failed to recalc ps wake threshold on vdev %i: %d\n",
5121
				    arvif->vdev_id, ret);
5122 5123
			goto err_peer_delete;
		}
5124

M
Michal Kazior 已提交
5125
		ret = ath10k_mac_vif_recalc_ps_poll_count(arvif);
5126
		if (ret) {
M
Michal Kazior 已提交
5127
			ath10k_warn(ar, "failed to recalc ps poll count on vdev %i: %d\n",
5128
				    arvif->vdev_id, ret);
5129 5130
			goto err_peer_delete;
		}
5131 5132
	}

5133 5134 5135 5136 5137 5138 5139
	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;
	}

5140
	ret = ath10k_mac_set_rts(arvif, ar->hw->wiphy->rts_threshold);
5141
	if (ret) {
5142
		ath10k_warn(ar, "failed to set rts threshold for vdev %d: %d\n",
5143
			    arvif->vdev_id, ret);
5144 5145
		goto err_peer_delete;
	}
5146

5147 5148 5149 5150 5151 5152 5153
	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;
	}

M
Michal Kazior 已提交
5154 5155 5156 5157 5158 5159 5160 5161 5162
	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;
		}
	}

5163 5164 5165 5166 5167
	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);

5168
	mutex_unlock(&ar->conf_mutex);
5169 5170 5171
	return 0;

err_peer_delete:
5172 5173
	if (arvif->vdev_type == WMI_VDEV_TYPE_AP ||
	    arvif->vdev_type == WMI_VDEV_TYPE_IBSS)
5174 5175 5176 5177
		ath10k_wmi_peer_delete(ar, arvif->vdev_id, vif->addr);

err_vdev_delete:
	ath10k_wmi_vdev_delete(ar, arvif->vdev_id);
B
Ben Greear 已提交
5178
	ar->free_vdev_map |= 1LL << arvif->vdev_id;
5179
	spin_lock_bh(&ar->data_lock);
M
Michal Kazior 已提交
5180
	list_del(&arvif->list);
5181
	spin_unlock_bh(&ar->data_lock);
5182 5183

err:
5184 5185 5186 5187 5188 5189
	if (arvif->beacon_buf) {
		dma_free_coherent(ar->dev, IEEE80211_MAX_FRAME_LEN,
				  arvif->beacon_buf, arvif->beacon_paddr);
		arvif->beacon_buf = NULL;
	}

5190 5191
	mutex_unlock(&ar->conf_mutex);

5192 5193 5194
	return ret;
}

5195 5196 5197 5198 5199 5200 5201 5202
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);
}

5203 5204 5205 5206
static void ath10k_remove_interface(struct ieee80211_hw *hw,
				    struct ieee80211_vif *vif)
{
	struct ath10k *ar = hw->priv;
5207
	struct ath10k_vif *arvif = (void *)vif->drv_priv;
M
Michal Kazior 已提交
5208
	struct ath10k_peer *peer;
5209
	int ret;
M
Michal Kazior 已提交
5210
	int i;
5211

5212
	cancel_work_sync(&arvif->ap_csa_work);
5213
	cancel_delayed_work_sync(&arvif->connection_loss_work);
5214

5215 5216
	mutex_lock(&ar->conf_mutex);

5217
	spin_lock_bh(&ar->data_lock);
5218
	ath10k_mac_vif_beacon_cleanup(arvif);
5219 5220
	spin_unlock_bh(&ar->data_lock);

5221 5222
	ret = ath10k_spectral_vif_stop(arvif);
	if (ret)
5223
		ath10k_warn(ar, "failed to stop spectral for vdev %i: %d\n",
5224 5225
			    arvif->vdev_id, ret);

B
Ben Greear 已提交
5226
	ar->free_vdev_map |= 1LL << arvif->vdev_id;
5227
	spin_lock_bh(&ar->data_lock);
M
Michal Kazior 已提交
5228
	list_del(&arvif->list);
5229
	spin_unlock_bh(&ar->data_lock);
5230

5231 5232
	if (arvif->vdev_type == WMI_VDEV_TYPE_AP ||
	    arvif->vdev_type == WMI_VDEV_TYPE_IBSS) {
5233 5234
		ret = ath10k_wmi_peer_delete(arvif->ar, arvif->vdev_id,
					     vif->addr);
5235
		if (ret)
5236
			ath10k_warn(ar, "failed to submit AP/IBSS self-peer removal on vdev %i: %d\n",
5237
				    arvif->vdev_id, ret);
5238 5239 5240 5241

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

5242
	ath10k_dbg(ar, ATH10K_DBG_MAC, "mac vdev %i delete (remove interface)\n",
K
Kalle Valo 已提交
5243 5244
		   arvif->vdev_id);

5245 5246
	ret = ath10k_wmi_vdev_delete(ar, arvif->vdev_id);
	if (ret)
5247
		ath10k_warn(ar, "failed to delete WMI vdev %i: %d\n",
5248
			    arvif->vdev_id, ret);
5249

5250 5251 5252
	/* Some firmware revisions don't notify host about self-peer removal
	 * until after associated vdev is deleted.
	 */
5253 5254
	if (arvif->vdev_type == WMI_VDEV_TYPE_AP ||
	    arvif->vdev_type == WMI_VDEV_TYPE_IBSS) {
5255 5256 5257 5258 5259 5260 5261 5262 5263 5264 5265
		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);
	}

M
Michal Kazior 已提交
5266 5267 5268 5269 5270 5271 5272 5273 5274 5275 5276 5277 5278 5279
	spin_lock_bh(&ar->data_lock);
	for (i = 0; i < ARRAY_SIZE(ar->peer_map); i++) {
		peer = ar->peer_map[i];
		if (!peer)
			continue;

		if (peer->vif == vif) {
			ath10k_warn(ar, "found vif peer %pM entry on vdev %i after it was supposedly removed\n",
				    vif->addr, arvif->vdev_id);
			peer->vif = NULL;
		}
	}
	spin_unlock_bh(&ar->data_lock);

5280
	ath10k_peer_cleanup(ar, arvif->vdev_id);
M
Michal Kazior 已提交
5281
	ath10k_mac_txq_unref(ar, vif->txq);
5282

M
Michal Kazior 已提交
5283 5284 5285 5286 5287 5288 5289
	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);
	}

5290 5291 5292 5293
	ret = ath10k_mac_txpower_recalc(ar);
	if (ret)
		ath10k_warn(ar, "failed to recalc tx power: %d\n", ret);

5294 5295 5296 5297
	spin_lock_bh(&ar->htt.tx_lock);
	ath10k_mac_vif_tx_unlock_all(arvif);
	spin_unlock_bh(&ar->htt.tx_lock);

M
Michal Kazior 已提交
5298 5299
	ath10k_mac_txq_unref(ar, vif->txq);

5300 5301 5302 5303 5304 5305 5306
	mutex_unlock(&ar->conf_mutex);
}

/*
 * FIXME: Has to be verified.
 */
#define SUPPORTED_FILTERS			\
5307
	(FIF_ALLMULTI |				\
5308 5309 5310 5311 5312 5313 5314 5315 5316 5317 5318 5319 5320 5321 5322 5323 5324 5325 5326 5327 5328
	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;

5329 5330
	ret = ath10k_monitor_recalc(ar);
	if (ret)
5331
		ath10k_warn(ar, "failed to recalc monitor: %d\n", ret);
5332 5333 5334 5335 5336 5337 5338 5339 5340 5341

	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;
5342
	struct ath10k_vif *arvif = (void *)vif->drv_priv;
5343
	int ret = 0;
5344
	u32 vdev_param, pdev_param, slottime, preamble;
5345 5346 5347 5348 5349 5350 5351 5352

	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;
5353 5354
		vdev_param = ar->wmi.vdev_param->beacon_interval;
		ret = ath10k_wmi_vdev_set_param(ar, arvif->vdev_id, vdev_param,
5355
						arvif->beacon_interval);
5356
		ath10k_dbg(ar, ATH10K_DBG_MAC,
K
Kalle Valo 已提交
5357 5358 5359
			   "mac vdev %d beacon_interval %d\n",
			   arvif->vdev_id, arvif->beacon_interval);

5360
		if (ret)
5361
			ath10k_warn(ar, "failed to set beacon interval for vdev %d: %i\n",
5362
				    arvif->vdev_id, ret);
5363 5364 5365
	}

	if (changed & BSS_CHANGED_BEACON) {
5366
		ath10k_dbg(ar, ATH10K_DBG_MAC,
K
Kalle Valo 已提交
5367 5368 5369
			   "vdev %d set beacon tx mode to staggered\n",
			   arvif->vdev_id);

5370 5371
		pdev_param = ar->wmi.pdev_param->beacon_tx_mode;
		ret = ath10k_wmi_pdev_set_param(ar, pdev_param,
5372 5373
						WMI_BEACON_STAGGERED_MODE);
		if (ret)
5374
			ath10k_warn(ar, "failed to set beacon mode for vdev %d: %i\n",
5375
				    arvif->vdev_id, ret);
5376 5377 5378 5379 5380

		ret = ath10k_mac_setup_bcn_tmpl(arvif);
		if (ret)
			ath10k_warn(ar, "failed to update beacon template: %d\n",
				    ret);
B
Bob Copeland 已提交
5381 5382 5383 5384 5385 5386 5387

		if (ieee80211_vif_is_mesh(vif)) {
			/* mesh doesn't use SSID but firmware needs it */
			strncpy(arvif->u.ap.ssid, "mesh",
				sizeof(arvif->u.ap.ssid));
			arvif->u.ap.ssid_len = 4;
		}
5388 5389 5390 5391 5392 5393 5394
	}

	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);
5395 5396
	}

5397
	if (changed & (BSS_CHANGED_BEACON_INFO | BSS_CHANGED_BEACON)) {
5398 5399
		arvif->dtim_period = info->dtim_period;

5400
		ath10k_dbg(ar, ATH10K_DBG_MAC,
K
Kalle Valo 已提交
5401 5402 5403
			   "mac vdev %d dtim_period %d\n",
			   arvif->vdev_id, arvif->dtim_period);

5404 5405
		vdev_param = ar->wmi.vdev_param->dtim_period;
		ret = ath10k_wmi_vdev_set_param(ar, arvif->vdev_id, vdev_param,
5406 5407
						arvif->dtim_period);
		if (ret)
5408
			ath10k_warn(ar, "failed to set dtim period for vdev %d: %i\n",
5409
				    arvif->vdev_id, ret);
5410 5411 5412 5413 5414 5415 5416 5417 5418 5419
	}

	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;
	}

5420 5421
	if (changed & BSS_CHANGED_BSSID && !is_zero_ether_addr(info->bssid))
		ether_addr_copy(arvif->bssid, info->bssid);
5422 5423 5424 5425 5426

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

	if (changed & BSS_CHANGED_ERP_CTS_PROT) {
5427
		arvif->use_cts_prot = info->use_cts_prot;
K
Kalle Valo 已提交
5428

5429
		ret = ath10k_recalc_rtscts_prot(arvif);
5430
		if (ret)
5431
			ath10k_warn(ar, "failed to recalculate rts/cts prot for vdev %d: %d\n",
5432
				    arvif->vdev_id, ret);
M
Michal Kazior 已提交
5433

5434 5435 5436 5437 5438 5439
		if (ath10k_mac_can_set_cts_prot(arvif)) {
			ret = ath10k_mac_set_cts_prot(arvif);
			if (ret)
				ath10k_warn(ar, "failed to set cts protection for vdev %d: %d\n",
					    arvif->vdev_id, ret);
		}
5440 5441 5442 5443 5444 5445 5446 5447 5448
	}

	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 */

5449
		ath10k_dbg(ar, ATH10K_DBG_MAC, "mac vdev %d slot_time %d\n",
K
Kalle Valo 已提交
5450 5451
			   arvif->vdev_id, slottime);

5452 5453
		vdev_param = ar->wmi.vdev_param->slot_time;
		ret = ath10k_wmi_vdev_set_param(ar, arvif->vdev_id, vdev_param,
5454 5455
						slottime);
		if (ret)
5456
			ath10k_warn(ar, "failed to set erp slot for vdev %d: %i\n",
5457
				    arvif->vdev_id, ret);
5458 5459 5460 5461 5462 5463 5464 5465
	}

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

5466
		ath10k_dbg(ar, ATH10K_DBG_MAC,
K
Kalle Valo 已提交
5467 5468 5469
			   "mac vdev %d preamble %dn",
			   arvif->vdev_id, preamble);

5470 5471
		vdev_param = ar->wmi.vdev_param->preamble;
		ret = ath10k_wmi_vdev_set_param(ar, arvif->vdev_id, vdev_param,
5472 5473
						preamble);
		if (ret)
5474
			ath10k_warn(ar, "failed to set preamble for vdev %d: %i\n",
5475
				    arvif->vdev_id, ret);
5476 5477 5478
	}

	if (changed & BSS_CHANGED_ASSOC) {
5479 5480 5481 5482 5483 5484 5485
		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);
5486
			ath10k_bss_assoc(hw, vif, info);
5487
			ath10k_monitor_recalc(ar);
5488 5489
		} else {
			ath10k_bss_disassoc(hw, vif);
5490
		}
5491 5492
	}

5493 5494 5495 5496 5497 5498 5499 5500 5501 5502
	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);
	}

5503
	if (changed & BSS_CHANGED_PS) {
5504 5505 5506
		arvif->ps = vif->bss_conf.ps;

		ret = ath10k_config_ps(ar);
5507 5508 5509 5510 5511
		if (ret)
			ath10k_warn(ar, "failed to setup ps on vdev %i: %d\n",
				    arvif->vdev_id, ret);
	}

5512 5513 5514
	mutex_unlock(&ar->conf_mutex);
}

5515 5516 5517 5518 5519 5520 5521 5522 5523 5524 5525 5526 5527 5528
static void ath10k_mac_op_set_coverage_class(struct ieee80211_hw *hw, s16 value)
{
	struct ath10k *ar = hw->priv;

	/* This function should never be called if setting the coverage class
	 * is not supported on this hardware.
	 */
	if (!ar->hw_params.hw_ops->set_coverage_class) {
		WARN_ON_ONCE(1);
		return;
	}
	ar->hw_params.hw_ops->set_coverage_class(ar, value);
}

5529 5530
static int ath10k_hw_scan(struct ieee80211_hw *hw,
			  struct ieee80211_vif *vif,
5531
			  struct ieee80211_scan_request *hw_req)
5532 5533
{
	struct ath10k *ar = hw->priv;
5534
	struct ath10k_vif *arvif = (void *)vif->drv_priv;
5535
	struct cfg80211_scan_request *req = &hw_req->req;
5536 5537 5538 5539 5540 5541 5542
	struct wmi_start_scan_arg arg;
	int ret = 0;
	int i;

	mutex_lock(&ar->conf_mutex);

	spin_lock_bh(&ar->data_lock);
5543 5544 5545 5546 5547 5548 5549 5550 5551 5552 5553 5554
	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:
5555
		ret = -EBUSY;
5556
		break;
5557 5558 5559
	}
	spin_unlock_bh(&ar->data_lock);

5560 5561 5562
	if (ret)
		goto exit;

5563 5564 5565 5566 5567 5568 5569 5570 5571 5572 5573 5574 5575 5576 5577 5578
	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;
		}
5579 5580
	} else {
		arg.scan_ctrl_flags |= WMI_SCAN_FLAG_PASSIVE;
5581 5582 5583 5584 5585 5586 5587 5588 5589 5590
	}

	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) {
5591
		ath10k_warn(ar, "failed to start hw scan: %d\n", ret);
5592
		spin_lock_bh(&ar->data_lock);
5593
		ar->scan.state = ATH10K_SCAN_IDLE;
5594 5595 5596
		spin_unlock_bh(&ar->data_lock);
	}

5597 5598 5599 5600 5601
	/* 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));

5602 5603 5604 5605 5606 5607 5608 5609 5610 5611 5612
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);
5613
	ath10k_scan_abort(ar);
5614
	mutex_unlock(&ar->conf_mutex);
5615 5616

	cancel_delayed_work_sync(&ar->scan.timeout);
5617 5618
}

5619 5620 5621 5622 5623 5624 5625 5626 5627 5628 5629 5630 5631
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).
	 *
M
Michal Kazior 已提交
5632 5633 5634 5635 5636
	 * 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.
	 */
5637

M
Michal Kazior 已提交
5638 5639
	if (arvif->vdev_type != WMI_VDEV_TYPE_AP &&
	    arvif->vdev_type != WMI_VDEV_TYPE_IBSS)
5640 5641 5642 5643 5644 5645 5646 5647 5648 5649 5650 5651 5652 5653 5654 5655 5656
		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)
5657
		ath10k_warn(ar, "failed to set vdev %i group key as default key: %d\n",
5658
			    arvif->vdev_id, ret);
5659 5660
}

5661 5662 5663 5664 5665
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;
5666
	struct ath10k_vif *arvif = (void *)vif->drv_priv;
5667 5668 5669 5670 5671
	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;
5672
	int ret2;
5673
	u32 flags = 0;
5674
	u32 flags2;
5675

5676 5677 5678
	/* this one needs to be done in software */
	if (key->cipher == WLAN_CIPHER_SUITE_AES_CMAC)
		return 1;
5679

5680 5681 5682
	if (arvif->nohwcrypt)
		return 1;

5683 5684 5685 5686 5687 5688 5689 5690 5691 5692 5693 5694 5695 5696
	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;

5697 5698 5699 5700 5701 5702 5703
	if (is_wep) {
		if (cmd == SET_KEY)
			arvif->wep_keys[key->keyidx] = key;
		else
			arvif->wep_keys[key->keyidx] = NULL;
	}

5704 5705 5706 5707 5708 5709 5710 5711
	/* 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) {
5712
			ath10k_warn(ar, "failed to install key for non-existent peer %pM\n",
5713 5714 5715 5716 5717 5718 5719 5720 5721 5722
				    peer_addr);
			ret = -EOPNOTSUPP;
			goto exit;
		} else {
			/* if the peer doesn't exist there is no key to disable
			 * anymore */
			goto exit;
		}
	}

M
Michal Kazior 已提交
5723 5724 5725 5726
	if (key->flags & IEEE80211_KEY_FLAG_PAIRWISE)
		flags |= WMI_KEY_PAIRWISE;
	else
		flags |= WMI_KEY_GROUP;
5727 5728 5729 5730 5731

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

5732 5733 5734 5735 5736 5737 5738 5739
		/* 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);

5740 5741 5742 5743 5744 5745 5746 5747 5748
		/* 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;
	}
5749

5750
	ret = ath10k_install_key(arvif, key, cmd, peer_addr, flags);
5751
	if (ret) {
5752
		WARN_ON(ret > 0);
5753
		ath10k_warn(ar, "failed to install key for vdev %i peer %pM: %d\n",
5754
			    arvif->vdev_id, peer_addr, ret);
5755 5756 5757
		goto exit;
	}

5758 5759 5760 5761 5762 5763 5764 5765 5766 5767
	/* 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) {
5768
			WARN_ON(ret > 0);
5769 5770 5771 5772
			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);
5773 5774
			if (ret2) {
				WARN_ON(ret2 > 0);
5775 5776
				ath10k_warn(ar, "failed to disable (mcast) key for vdev %i peer %pM: %d\n",
					    arvif->vdev_id, peer_addr, ret2);
5777
			}
5778 5779 5780 5781
			goto exit;
		}
	}

5782 5783
	ath10k_set_key_h_def_keyidx(ar, arvif, cmd, key);

5784 5785 5786 5787 5788 5789 5790 5791
	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 */
5792
		ath10k_warn(ar, "Peer %pM disappeared!\n", peer_addr);
5793 5794 5795 5796 5797 5798 5799
	spin_unlock_bh(&ar->data_lock);

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

5800 5801 5802 5803 5804
static void ath10k_set_default_unicast_key(struct ieee80211_hw *hw,
					   struct ieee80211_vif *vif,
					   int keyidx)
{
	struct ath10k *ar = hw->priv;
5805
	struct ath10k_vif *arvif = (void *)vif->drv_priv;
5806 5807 5808 5809 5810 5811 5812 5813 5814 5815 5816 5817 5818 5819 5820 5821 5822 5823 5824 5825 5826 5827 5828
	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;
5829

5830 5831 5832 5833
unlock:
	mutex_unlock(&arvif->ar->conf_mutex);
}

5834 5835 5836 5837 5838 5839
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;
5840
	struct cfg80211_chan_def def;
5841
	enum nl80211_band band;
5842 5843
	const u8 *ht_mcs_mask;
	const u16 *vht_mcs_mask;
5844 5845 5846 5847 5848 5849 5850 5851
	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;

5852 5853 5854 5855 5856 5857 5858
	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;

5859 5860 5861 5862 5863 5864 5865 5866 5867 5868 5869 5870 5871
	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);

5872 5873 5874 5875
	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)));

5876
	if (changed & IEEE80211_RC_BW_CHANGED) {
5877
		ath10k_dbg(ar, ATH10K_DBG_MAC, "mac update sta %pM peer bw %d\n",
5878 5879 5880 5881 5882
			   sta->addr, bw);

		err = ath10k_wmi_peer_set_param(ar, arvif->vdev_id, sta->addr,
						WMI_PEER_CHAN_WIDTH, bw);
		if (err)
5883
			ath10k_warn(ar, "failed to update STA %pM peer bw %d: %d\n",
5884 5885 5886 5887
				    sta->addr, bw, err);
	}

	if (changed & IEEE80211_RC_NSS_CHANGED) {
5888
		ath10k_dbg(ar, ATH10K_DBG_MAC, "mac update sta %pM nss %d\n",
5889 5890 5891 5892 5893
			   sta->addr, nss);

		err = ath10k_wmi_peer_set_param(ar, arvif->vdev_id, sta->addr,
						WMI_PEER_NSS, nss);
		if (err)
5894
			ath10k_warn(ar, "failed to update STA %pM nss %d: %d\n",
5895 5896 5897 5898
				    sta->addr, nss, err);
	}

	if (changed & IEEE80211_RC_SMPS_CHANGED) {
5899
		ath10k_dbg(ar, ATH10K_DBG_MAC, "mac update sta %pM smps %d\n",
5900 5901 5902 5903 5904
			   sta->addr, smps);

		err = ath10k_wmi_peer_set_param(ar, arvif->vdev_id, sta->addr,
						WMI_PEER_SMPS_STATE, smps);
		if (err)
5905
			ath10k_warn(ar, "failed to update STA %pM smps %d: %d\n",
5906 5907 5908
				    sta->addr, smps, err);
	}

5909 5910 5911
	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",
5912 5913
			   sta->addr);

M
Michal Kazior 已提交
5914
		err = ath10k_station_assoc(ar, arvif->vif, sta, true);
5915
		if (err)
5916
			ath10k_warn(ar, "failed to reassociate station: %pM\n",
5917 5918 5919
				    sta->addr);
	}

5920 5921 5922
	mutex_unlock(&ar->conf_mutex);
}

M
Marek Puzyniak 已提交
5923 5924
static int ath10k_mac_inc_num_stations(struct ath10k_vif *arvif,
				       struct ieee80211_sta *sta)
5925 5926 5927 5928 5929
{
	struct ath10k *ar = arvif->ar;

	lockdep_assert_held(&ar->conf_mutex);

M
Marek Puzyniak 已提交
5930
	if (arvif->vdev_type == WMI_VDEV_TYPE_STA && !sta->tdls)
5931 5932 5933 5934 5935 5936 5937 5938 5939 5940
		return 0;

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

	ar->num_stations++;

	return 0;
}

M
Marek Puzyniak 已提交
5941 5942
static void ath10k_mac_dec_num_stations(struct ath10k_vif *arvif,
					struct ieee80211_sta *sta)
5943 5944 5945 5946 5947
{
	struct ath10k *ar = arvif->ar;

	lockdep_assert_held(&ar->conf_mutex);

M
Marek Puzyniak 已提交
5948
	if (arvif->vdev_type == WMI_VDEV_TYPE_STA && !sta->tdls)
5949 5950 5951 5952 5953
		return;

	ar->num_stations--;
}

5954 5955 5956 5957 5958 5959 5960
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)
5961
{
5962
	struct ath10k_mac_tdls_iter_data *iter_data = data;
5963
	struct ath10k_sta *arsta = (struct ath10k_sta *)sta->drv_priv;
5964
	struct ieee80211_vif *sta_vif = arsta->arvif->vif;
5965

5966 5967 5968 5969 5970 5971 5972 5973 5974 5975 5976 5977 5978 5979 5980 5981 5982 5983 5984 5985
	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)
{
5986
	struct ath10k_vif *arvif = (void *)vif->drv_priv;
5987 5988 5989 5990 5991 5992 5993 5994 5995 5996 5997 5998 5999 6000 6001 6002 6003 6004 6005 6006
	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;
}

6007 6008 6009 6010 6011 6012 6013
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;
6014
	struct ath10k_vif *arvif = (void *)vif->drv_priv;
6015
	struct ath10k_sta *arsta = (struct ath10k_sta *)sta->drv_priv;
6016
	struct ath10k_peer *peer;
6017
	int ret = 0;
M
Michal Kazior 已提交
6018
	int i;
6019

6020 6021 6022 6023 6024
	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);
M
Michal Kazior 已提交
6025 6026 6027

		for (i = 0; i < ARRAY_SIZE(sta->txq); i++)
			ath10k_mac_txq_init(sta->txq[i]);
6028 6029
	}

6030 6031 6032 6033 6034
	/* 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);

6035 6036 6037
	mutex_lock(&ar->conf_mutex);

	if (old_state == IEEE80211_STA_NOTEXIST &&
6038
	    new_state == IEEE80211_STA_NONE) {
6039 6040 6041
		/*
		 * New station addition.
		 */
6042 6043 6044 6045
		enum wmi_peer_type peer_type = WMI_PEER_TYPE_DEFAULT;
		u32 num_tdls_stations;
		u32 num_tdls_vifs;

6046 6047 6048 6049 6050
		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);
6051

M
Marek Puzyniak 已提交
6052
		ret = ath10k_mac_inc_num_stations(arvif, sta);
6053 6054 6055
		if (ret) {
			ath10k_warn(ar, "refusing to associate station: too many connected already (%d)\n",
				    ar->max_num_stations);
6056 6057 6058
			goto exit;
		}

6059 6060 6061
		if (sta->tdls)
			peer_type = WMI_PEER_TYPE_TDLS;

M
Michal Kazior 已提交
6062 6063
		ret = ath10k_peer_create(ar, vif, sta, arvif->vdev_id,
					 sta->addr, peer_type);
M
Michal Kazior 已提交
6064
		if (ret) {
6065
			ath10k_warn(ar, "failed to add peer %pM for vdev %d when adding a new sta: %i\n",
6066
				    sta->addr, arvif->vdev_id, ret);
M
Marek Puzyniak 已提交
6067
			ath10k_mac_dec_num_stations(arvif, sta);
M
Michal Kazior 已提交
6068 6069
			goto exit;
		}
6070

6071 6072 6073 6074 6075 6076 6077 6078 6079 6080 6081 6082 6083 6084 6085 6086 6087 6088
		spin_lock_bh(&ar->data_lock);

		peer = ath10k_peer_find(ar, arvif->vdev_id, sta->addr);
		if (!peer) {
			ath10k_warn(ar, "failed to lookup peer %pM on vdev %i\n",
				    vif->addr, arvif->vdev_id);
			spin_unlock_bh(&ar->data_lock);
			ath10k_peer_delete(ar, arvif->vdev_id, sta->addr);
			ath10k_mac_dec_num_stations(arvif, sta);
			ret = -ENOENT;
			goto exit;
		}

		arsta->peer_id = find_first_bit(peer->peer_ids,
						ATH10K_MAX_NUM_PEER_IDS);

		spin_unlock_bh(&ar->data_lock);

6089 6090 6091 6092 6093 6094 6095 6096 6097 6098 6099 6100 6101
		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;
M
Michal Kazior 已提交
6102 6103
			goto exit;
		}
6104

6105 6106 6107
		if (num_tdls_stations == 0) {
			/* This is the first tdls peer in current vif */
			enum wmi_tdls_state state = WMI_TDLS_ENABLE_ACTIVE;
6108

6109 6110
			ret = ath10k_wmi_update_fw_tdls_state(ar, arvif->vdev_id,
							      state);
6111
			if (ret) {
6112
				ath10k_warn(ar, "failed to update fw tdls state on vdev %i: %i\n",
6113
					    arvif->vdev_id, ret);
6114 6115 6116
				ath10k_peer_delete(ar, arvif->vdev_id,
						   sta->addr);
				ath10k_mac_dec_num_stations(arvif, sta);
6117 6118
				goto exit;
			}
6119 6120 6121 6122 6123 6124 6125 6126 6127 6128
		}

		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);
6129

6130 6131 6132 6133
			if (num_tdls_stations != 0)
				goto exit;
			ath10k_wmi_update_fw_tdls_state(ar, arvif->vdev_id,
							WMI_TDLS_DISABLE);
6134
		}
6135 6136 6137 6138 6139
	} else if ((old_state == IEEE80211_STA_NONE &&
		    new_state == IEEE80211_STA_NOTEXIST)) {
		/*
		 * Existing station deletion.
		 */
6140
		ath10k_dbg(ar, ATH10K_DBG_MAC,
B
Ben Greear 已提交
6141 6142
			   "mac vdev %d peer delete %pM sta %pK (sta gone)\n",
			   arvif->vdev_id, sta->addr, sta);
6143

6144 6145
		ret = ath10k_peer_delete(ar, arvif->vdev_id, sta->addr);
		if (ret)
6146
			ath10k_warn(ar, "failed to delete peer %pM for vdev %d: %i\n",
6147
				    sta->addr, arvif->vdev_id, ret);
6148

M
Marek Puzyniak 已提交
6149
		ath10k_mac_dec_num_stations(arvif, sta);
6150

M
Michal Kazior 已提交
6151 6152 6153 6154 6155 6156 6157
		spin_lock_bh(&ar->data_lock);
		for (i = 0; i < ARRAY_SIZE(ar->peer_map); i++) {
			peer = ar->peer_map[i];
			if (!peer)
				continue;

			if (peer->sta == sta) {
6158
				ath10k_warn(ar, "found sta peer %pM (ptr %pK id %d) entry on vdev %i after it was supposedly removed\n",
6159
					    sta->addr, peer, i, arvif->vdev_id);
M
Michal Kazior 已提交
6160
				peer->sta = NULL;
6161 6162 6163 6164 6165 6166 6167 6168

				/* Clean up the peer object as well since we
				 * must have failed to do this above.
				 */
				list_del(&peer->list);
				ar->peer_map[i] = NULL;
				kfree(peer);
				ar->num_peers--;
M
Michal Kazior 已提交
6169 6170 6171 6172
			}
		}
		spin_unlock_bh(&ar->data_lock);

M
Michal Kazior 已提交
6173 6174 6175
		for (i = 0; i < ARRAY_SIZE(sta->txq); i++)
			ath10k_mac_txq_unref(ar, sta->txq[i]);

6176 6177 6178 6179 6180 6181 6182 6183 6184 6185 6186 6187 6188
		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);
		}
6189 6190 6191
	} else if (old_state == IEEE80211_STA_AUTH &&
		   new_state == IEEE80211_STA_ASSOC &&
		   (vif->type == NL80211_IFTYPE_AP ||
B
Bob Copeland 已提交
6192
		    vif->type == NL80211_IFTYPE_MESH_POINT ||
6193 6194 6195 6196
		    vif->type == NL80211_IFTYPE_ADHOC)) {
		/*
		 * New association.
		 */
6197
		ath10k_dbg(ar, ATH10K_DBG_MAC, "mac sta %pM associated\n",
K
Kalle Valo 已提交
6198 6199
			   sta->addr);

M
Michal Kazior 已提交
6200
		ret = ath10k_station_assoc(ar, vif, sta, false);
6201
		if (ret)
6202
			ath10k_warn(ar, "failed to associate station %pM for vdev %i: %i\n",
6203
				    sta->addr, arvif->vdev_id, ret);
6204
	} else if (old_state == IEEE80211_STA_ASSOC &&
6205 6206 6207 6208 6209 6210 6211 6212 6213 6214 6215 6216 6217 6218 6219 6220 6221 6222 6223 6224 6225 6226 6227
		   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 ||
B
Bob Copeland 已提交
6228
		     vif->type == NL80211_IFTYPE_MESH_POINT ||
6229
		     vif->type == NL80211_IFTYPE_ADHOC)) {
6230 6231 6232
		/*
		 * Disassociation.
		 */
6233
		ath10k_dbg(ar, ATH10K_DBG_MAC, "mac sta %pM disassociated\n",
K
Kalle Valo 已提交
6234 6235
			   sta->addr);

M
Michal Kazior 已提交
6236
		ret = ath10k_station_disassoc(ar, vif, sta);
6237
		if (ret)
6238
			ath10k_warn(ar, "failed to disassociate station: %pM vdev %i: %i\n",
6239
				    sta->addr, arvif->vdev_id, ret);
6240
	}
6241
exit:
6242 6243 6244 6245 6246
	mutex_unlock(&ar->conf_mutex);
	return ret;
}

static int ath10k_conf_tx_uapsd(struct ath10k *ar, struct ieee80211_vif *vif,
6247
				u16 ac, bool enable)
6248
{
6249
	struct ath10k_vif *arvif = (void *)vif->drv_priv;
6250 6251
	struct wmi_sta_uapsd_auto_trig_arg arg = {};
	u32 prio = 0, acc = 0;
6252 6253 6254
	u32 value = 0;
	int ret = 0;

M
Michal Kazior 已提交
6255 6256
	lockdep_assert_held(&ar->conf_mutex);

6257 6258 6259 6260 6261 6262 6263
	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;
6264 6265
		prio = 7;
		acc = 3;
6266 6267 6268 6269
		break;
	case IEEE80211_AC_VI:
		value = WMI_STA_PS_UAPSD_AC2_DELIVERY_EN |
			WMI_STA_PS_UAPSD_AC2_TRIGGER_EN;
6270 6271
		prio = 5;
		acc = 2;
6272 6273 6274 6275
		break;
	case IEEE80211_AC_BE:
		value = WMI_STA_PS_UAPSD_AC1_DELIVERY_EN |
			WMI_STA_PS_UAPSD_AC1_TRIGGER_EN;
6276 6277
		prio = 2;
		acc = 1;
6278 6279 6280 6281
		break;
	case IEEE80211_AC_BK:
		value = WMI_STA_PS_UAPSD_AC0_DELIVERY_EN |
			WMI_STA_PS_UAPSD_AC0_TRIGGER_EN;
6282 6283
		prio = 0;
		acc = 0;
6284 6285 6286 6287 6288 6289 6290 6291 6292 6293 6294 6295
		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) {
6296
		ath10k_warn(ar, "failed to set uapsd params: %d\n", ret);
6297 6298 6299 6300 6301 6302 6303 6304 6305 6306 6307 6308
		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)
6309
		ath10k_warn(ar, "failed to set rx wake param: %d\n", ret);
6310

M
Michal Kazior 已提交
6311 6312 6313 6314 6315 6316 6317 6318 6319 6320 6321 6322 6323 6324
	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;
	}

6325 6326 6327 6328 6329 6330 6331 6332 6333 6334 6335 6336 6337 6338 6339 6340 6341 6342 6343 6344 6345 6346 6347
	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;
		}
	}

6348 6349 6350 6351 6352 6353 6354 6355 6356
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;
6357
	struct ath10k_vif *arvif = (void *)vif->drv_priv;
6358 6359 6360 6361 6362 6363 6364
	struct wmi_wmm_params_arg *p = NULL;
	int ret;

	mutex_lock(&ar->conf_mutex);

	switch (ac) {
	case IEEE80211_AC_VO:
6365
		p = &arvif->wmm_params.ac_vo;
6366 6367
		break;
	case IEEE80211_AC_VI:
6368
		p = &arvif->wmm_params.ac_vi;
6369 6370
		break;
	case IEEE80211_AC_BE:
6371
		p = &arvif->wmm_params.ac_be;
6372 6373
		break;
	case IEEE80211_AC_BK:
6374
		p = &arvif->wmm_params.ac_bk;
6375 6376 6377 6378 6379 6380 6381 6382 6383 6384 6385 6386 6387 6388 6389 6390 6391 6392 6393
		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;

6394 6395 6396 6397 6398 6399 6400 6401 6402 6403 6404 6405 6406 6407 6408 6409 6410
	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;
		}
6411 6412 6413 6414
	}

	ret = ath10k_conf_tx_uapsd(ar, vif, ac, params->uapsd);
	if (ret)
6415
		ath10k_warn(ar, "failed to set sta uapsd: %d\n", ret);
6416 6417 6418 6419 6420 6421

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

6422
#define ATH10K_ROC_TIMEOUT_HZ (2 * HZ)
6423 6424 6425 6426 6427 6428 6429 6430

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;
6431
	struct ath10k_vif *arvif = (void *)vif->drv_priv;
6432
	struct wmi_start_scan_arg arg;
6433
	int ret = 0;
M
Michal Kazior 已提交
6434
	u32 scan_time_msec;
6435 6436 6437 6438

	mutex_lock(&ar->conf_mutex);

	spin_lock_bh(&ar->data_lock);
6439 6440 6441 6442 6443 6444 6445 6446 6447
	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;
6448
		ar->scan.roc_notify = true;
6449 6450 6451 6452 6453
		ret = 0;
		break;
	case ATH10K_SCAN_STARTING:
	case ATH10K_SCAN_RUNNING:
	case ATH10K_SCAN_ABORTING:
6454
		ret = -EBUSY;
6455
		break;
6456 6457 6458
	}
	spin_unlock_bh(&ar->data_lock);

6459 6460 6461
	if (ret)
		goto exit;

M
Michal Kazior 已提交
6462
	scan_time_msec = ar->hw->wiphy->max_remain_on_channel_duration * 2;
M
Michal Kazior 已提交
6463

6464 6465 6466 6467 6468 6469
	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;
M
Michal Kazior 已提交
6470 6471 6472
	arg.dwell_time_active = scan_time_msec;
	arg.dwell_time_passive = scan_time_msec;
	arg.max_scan_time = scan_time_msec;
6473 6474
	arg.scan_ctrl_flags |= WMI_SCAN_FLAG_PASSIVE;
	arg.scan_ctrl_flags |= WMI_SCAN_FILTER_PROBE_REQ;
6475
	arg.burst_duration_ms = duration;
6476 6477 6478

	ret = ath10k_start_scan(ar, &arg);
	if (ret) {
6479
		ath10k_warn(ar, "failed to start roc scan: %d\n", ret);
6480
		spin_lock_bh(&ar->data_lock);
6481
		ar->scan.state = ATH10K_SCAN_IDLE;
6482 6483 6484 6485
		spin_unlock_bh(&ar->data_lock);
		goto exit;
	}

6486
	ret = wait_for_completion_timeout(&ar->scan.on_channel, 3 * HZ);
6487
	if (ret == 0) {
6488
		ath10k_warn(ar, "failed to switch to channel for roc scan\n");
6489 6490 6491

		ret = ath10k_scan_stop(ar);
		if (ret)
6492
			ath10k_warn(ar, "failed to stop scan: %d\n", ret);
6493

6494 6495 6496 6497
		ret = -ETIMEDOUT;
		goto exit;
	}

M
Michal Kazior 已提交
6498 6499 6500
	ieee80211_queue_delayed_work(ar->hw, &ar->scan.timeout,
				     msecs_to_jiffies(duration));

6501 6502 6503 6504 6505 6506 6507 6508 6509 6510 6511
	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);
6512 6513 6514 6515 6516

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

6517
	ath10k_scan_abort(ar);
6518

6519 6520
	mutex_unlock(&ar->conf_mutex);

6521 6522
	cancel_delayed_work_sync(&ar->scan.timeout);

6523 6524 6525 6526 6527 6528 6529 6530
	return 0;
}

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

6531 6532 6533 6534 6535
static int ath10k_set_rts_threshold(struct ieee80211_hw *hw, u32 value)
{
	struct ath10k *ar = hw->priv;
	struct ath10k_vif *arvif;
	int ret = 0;
M
Michal Kazior 已提交
6536

6537
	mutex_lock(&ar->conf_mutex);
6538
	list_for_each_entry(arvif, &ar->arvifs, list) {
6539
		ath10k_dbg(ar, ATH10K_DBG_MAC, "mac vdev %d rts threshold %d\n",
6540 6541 6542 6543
			   arvif->vdev_id, value);

		ret = ath10k_mac_set_rts(arvif, value);
		if (ret) {
6544
			ath10k_warn(ar, "failed to set rts threshold for vdev %d: %d\n",
6545 6546 6547 6548
				    arvif->vdev_id, ret);
			break;
		}
	}
6549 6550
	mutex_unlock(&ar->conf_mutex);

6551
	return ret;
6552 6553
}

6554 6555 6556 6557 6558 6559 6560 6561 6562 6563 6564 6565 6566 6567 6568
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;
}

6569 6570
static void ath10k_flush(struct ieee80211_hw *hw, struct ieee80211_vif *vif,
			 u32 queues, bool drop)
6571 6572
{
	struct ath10k *ar = hw->priv;
6573
	bool skip;
6574
	long time_left;
6575 6576 6577 6578 6579 6580

	/* 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;

M
Michal Kazior 已提交
6581 6582
	mutex_lock(&ar->conf_mutex);

6583 6584 6585
	if (ar->state == ATH10K_STATE_WEDGED)
		goto skip;

6586
	time_left = wait_event_timeout(ar->htt.empty_tx_wq, ({
6587
			bool empty;
6588

6589
			spin_lock_bh(&ar->htt.tx_lock);
6590
			empty = (ar->htt.num_pending_tx == 0);
6591
			spin_unlock_bh(&ar->htt.tx_lock);
6592

M
Michal Kazior 已提交
6593 6594 6595
			skip = (ar->state == ATH10K_STATE_WEDGED) ||
			       test_bit(ATH10K_FLAG_CRASH_FLUSH,
					&ar->dev_flags);
6596 6597

			(empty || skip);
6598
		}), ATH10K_FLUSH_TIMEOUT_HZ);
6599

6600 6601 6602
	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);
M
Michal Kazior 已提交
6603

6604
skip:
M
Michal Kazior 已提交
6605
	mutex_unlock(&ar->conf_mutex);
6606 6607 6608 6609 6610 6611 6612 6613 6614 6615 6616
}

/* 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;
}

6617 6618
static void ath10k_reconfig_complete(struct ieee80211_hw *hw,
				     enum ieee80211_reconfig_type reconfig_type)
6619 6620 6621
{
	struct ath10k *ar = hw->priv;

6622 6623 6624
	if (reconfig_type != IEEE80211_RECONFIG_TYPE_RESTART)
		return;

6625 6626 6627 6628 6629
	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) {
6630
		ath10k_info(ar, "device successfully recovered\n");
6631
		ar->state = ATH10K_STATE_ON;
M
Michal Kazior 已提交
6632
		ieee80211_wake_queues(ar->hw);
6633 6634 6635 6636 6637
	}

	mutex_unlock(&ar->conf_mutex);
}

6638 6639 6640 6641 6642 6643 6644 6645 6646 6647 6648 6649 6650 6651 6652 6653 6654 6655 6656 6657 6658 6659 6660 6661 6662 6663 6664 6665 6666 6667 6668 6669 6670
static void
ath10k_mac_update_bss_chan_survey(struct ath10k *ar,
				  struct ieee80211_channel *channel)
{
	int ret;
	enum wmi_bss_survey_req_type type = WMI_BSS_SURVEY_REQ_TYPE_READ_CLEAR;

	lockdep_assert_held(&ar->conf_mutex);

	if (!test_bit(WMI_SERVICE_BSS_CHANNEL_INFO_64, ar->wmi.svc_map) ||
	    (ar->rx_channel != channel))
		return;

	if (ar->scan.state != ATH10K_SCAN_IDLE) {
		ath10k_dbg(ar, ATH10K_DBG_MAC, "ignoring bss chan info request while scanning..\n");
		return;
	}

	reinit_completion(&ar->bss_survey_done);

	ret = ath10k_wmi_pdev_bss_chan_info_request(ar, type);
	if (ret) {
		ath10k_warn(ar, "failed to send pdev bss chan info request\n");
		return;
	}

	ret = wait_for_completion_timeout(&ar->bss_survey_done, 3 * HZ);
	if (!ret) {
		ath10k_warn(ar, "bss channel survey timed out\n");
		return;
	}
}

M
Michal Kazior 已提交
6671 6672 6673 6674 6675 6676 6677 6678 6679 6680
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);

6681
	sband = hw->wiphy->bands[NL80211_BAND_2GHZ];
M
Michal Kazior 已提交
6682 6683 6684 6685 6686 6687
	if (sband && idx >= sband->n_channels) {
		idx -= sband->n_channels;
		sband = NULL;
	}

	if (!sband)
6688
		sband = hw->wiphy->bands[NL80211_BAND_5GHZ];
M
Michal Kazior 已提交
6689 6690 6691 6692 6693 6694

	if (!sband || idx >= sband->n_channels) {
		ret = -ENOENT;
		goto exit;
	}

6695
	ath10k_mac_update_bss_chan_survey(ar, &sband->channels[idx]);
6696

M
Michal Kazior 已提交
6697 6698 6699 6700 6701 6702
	spin_lock_bh(&ar->data_lock);
	memcpy(survey, ar_survey, sizeof(*survey));
	spin_unlock_bh(&ar->data_lock);

	survey->channel = &sband->channels[idx];

6703 6704 6705
	if (ar->rx_channel == survey->channel)
		survey->filled |= SURVEY_INFO_IN_USE;

M
Michal Kazior 已提交
6706 6707 6708 6709 6710
exit:
	mutex_unlock(&ar->conf_mutex);
	return ret;
}

6711
static bool
6712
ath10k_mac_bitrate_mask_has_single_rate(struct ath10k *ar,
6713
					enum nl80211_band band,
6714
					const struct cfg80211_bitrate_mask *mask)
6715
{
6716 6717
	int num_rates = 0;
	int i;
6718

6719
	num_rates += hweight32(mask->control[band].legacy);
6720

6721 6722
	for (i = 0; i < ARRAY_SIZE(mask->control[band].ht_mcs); i++)
		num_rates += hweight8(mask->control[band].ht_mcs[i]);
6723

6724 6725
	for (i = 0; i < ARRAY_SIZE(mask->control[band].vht_mcs); i++)
		num_rates += hweight16(mask->control[band].vht_mcs[i]);
6726

6727
	return num_rates == 1;
6728 6729 6730
}

static bool
6731
ath10k_mac_bitrate_mask_get_single_nss(struct ath10k *ar,
6732
				       enum nl80211_band band,
6733 6734 6735 6736 6737 6738 6739 6740
				       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;
6741

6742
	if (mask->control[band].legacy)
6743 6744
		return false;

6745 6746
	for (i = 0; i < ARRAY_SIZE(mask->control[band].ht_mcs); i++) {
		if (mask->control[band].ht_mcs[i] == 0)
6747
			continue;
6748 6749 6750 6751 6752
		else if (mask->control[band].ht_mcs[i] ==
			 sband->ht_cap.mcs.rx_mask[i])
			ht_nss_mask |= BIT(i);
		else
			return false;
6753 6754
	}

6755 6756
	for (i = 0; i < ARRAY_SIZE(mask->control[band].vht_mcs); i++) {
		if (mask->control[band].vht_mcs[i] == 0)
6757
			continue;
6758 6759 6760 6761 6762
		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;
6763 6764
	}

6765
	if (ht_nss_mask != vht_nss_mask)
6766 6767
		return false;

6768
	if (ht_nss_mask == 0)
6769 6770
		return false;

6771
	if (BIT(fls(ht_nss_mask)) - 1 != ht_nss_mask)
6772 6773
		return false;

6774
	*nss = fls(ht_nss_mask);
6775 6776 6777 6778

	return true;
}

6779 6780
static int
ath10k_mac_bitrate_mask_get_single_rate(struct ath10k *ar,
6781
					enum nl80211_band band,
6782 6783
					const struct cfg80211_bitrate_mask *mask,
					u8 *rate, u8 *nss)
6784
{
6785 6786 6787 6788 6789 6790
	struct ieee80211_supported_band *sband = &ar->mac.sbands[band];
	int rate_idx;
	int i;
	u16 bitrate;
	u8 preamble;
	u8 hw_rate;
6791

6792 6793
	if (hweight32(mask->control[band].legacy) == 1) {
		rate_idx = ffs(mask->control[band].legacy) - 1;
6794

6795 6796
		hw_rate = sband->bitrates[rate_idx].hw_value;
		bitrate = sband->bitrates[rate_idx].bitrate;
6797

6798 6799 6800 6801
		if (ath10k_mac_bitrate_is_cck(bitrate))
			preamble = WMI_RATE_PREAMBLE_CCK;
		else
			preamble = WMI_RATE_PREAMBLE_OFDM;
6802

6803 6804 6805 6806
		*nss = 1;
		*rate = preamble << 6 |
			(*nss - 1) << 4 |
			hw_rate << 0;
6807

6808
		return 0;
6809 6810
	}

6811 6812 6813 6814 6815 6816
	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);
6817

6818 6819 6820
			return 0;
		}
	}
6821

6822 6823 6824 6825 6826 6827
	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);
6828

6829 6830 6831
			return 0;
		}
	}
6832

6833
	return -EINVAL;
6834 6835
}

6836
static int ath10k_mac_set_fixed_rate_params(struct ath10k_vif *arvif,
6837
					    u8 rate, u8 nss, u8 sgi, u8 ldpc)
6838 6839 6840
{
	struct ath10k *ar = arvif->ar;
	u32 vdev_param;
6841
	int ret;
6842

6843
	lockdep_assert_held(&ar->conf_mutex);
6844

6845 6846
	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);
6847

6848
	vdev_param = ar->wmi.vdev_param->fixed_rate;
6849
	ret = ath10k_wmi_vdev_set_param(ar, arvif->vdev_id, vdev_param, rate);
6850
	if (ret) {
6851
		ath10k_warn(ar, "failed to set fixed rate param 0x%02x: %d\n",
6852 6853
			    rate, ret);
		return ret;
6854 6855 6856
	}

	vdev_param = ar->wmi.vdev_param->nss;
6857
	ret = ath10k_wmi_vdev_set_param(ar, arvif->vdev_id, vdev_param, nss);
6858
	if (ret) {
6859 6860
		ath10k_warn(ar, "failed to set nss param %d: %d\n", nss, ret);
		return ret;
6861 6862
	}

6863
	vdev_param = ar->wmi.vdev_param->sgi;
6864
	ret = ath10k_wmi_vdev_set_param(ar, arvif->vdev_id, vdev_param, sgi);
6865
	if (ret) {
6866 6867
		ath10k_warn(ar, "failed to set sgi param %d: %d\n", sgi, ret);
		return ret;
6868 6869
	}

6870 6871 6872 6873 6874 6875 6876
	vdev_param = ar->wmi.vdev_param->ldpc;
	ret = ath10k_wmi_vdev_set_param(ar, arvif->vdev_id, vdev_param, ldpc);
	if (ret) {
		ath10k_warn(ar, "failed to set ldpc param %d: %d\n", ldpc, ret);
		return ret;
	}

6877
	return 0;
6878 6879
}

6880 6881
static bool
ath10k_mac_can_set_bitrate_mask(struct ath10k *ar,
6882
				enum nl80211_band band,
6883 6884 6885 6886
				const struct cfg80211_bitrate_mask *mask)
{
	int i;
	u16 vht_mcs;
6887

6888 6889 6890 6891 6892 6893 6894 6895 6896 6897 6898 6899 6900 6901 6902 6903 6904
	/* 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;
		}
6905 6906
	}

6907 6908
	return true;
}
6909

6910 6911 6912 6913 6914 6915 6916 6917 6918 6919 6920 6921 6922 6923 6924
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);
6925 6926
}

6927 6928 6929
static int ath10k_mac_op_set_bitrate_mask(struct ieee80211_hw *hw,
					  struct ieee80211_vif *vif,
					  const struct cfg80211_bitrate_mask *mask)
6930
{
6931
	struct ath10k_vif *arvif = (void *)vif->drv_priv;
M
Michal Kazior 已提交
6932
	struct cfg80211_chan_def def;
6933
	struct ath10k *ar = arvif->ar;
6934
	enum nl80211_band band;
6935 6936
	const u8 *ht_mcs_mask;
	const u16 *vht_mcs_mask;
6937 6938 6939
	u8 rate;
	u8 nss;
	u8 sgi;
6940
	u8 ldpc;
6941 6942
	int single_nss;
	int ret;
6943

M
Michal Kazior 已提交
6944 6945
	if (ath10k_mac_vif_chan(vif, &def))
		return -EPERM;
6946

M
Michal Kazior 已提交
6947
	band = def.chan->band;
6948 6949
	ht_mcs_mask = mask->control[band].ht_mcs;
	vht_mcs_mask = mask->control[band].vht_mcs;
6950
	ldpc = !!(ar->ht_cap_info & WMI_HT_CAP_LDPC);
6951

6952 6953
	sgi = mask->control[band].gi;
	if (sgi == NL80211_TXRATE_FORCE_LGI)
6954
		return -EINVAL;
6955

6956 6957 6958 6959 6960 6961 6962 6963 6964 6965 6966 6967 6968 6969
	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;
6970 6971 6972 6973 6974
		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))
6975
			return -EINVAL;
6976 6977 6978 6979 6980 6981 6982 6983 6984

		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);
6985 6986
	}

6987 6988
	mutex_lock(&ar->conf_mutex);

6989
	ret = ath10k_mac_set_fixed_rate_params(arvif, rate, nss, sgi, ldpc);
6990 6991 6992 6993
	if (ret) {
		ath10k_warn(ar, "failed to set fixed rate params on vdev %i: %d\n",
			    arvif->vdev_id, ret);
		goto exit;
6994 6995
	}

6996 6997 6998 6999
exit:
	mutex_unlock(&ar->conf_mutex);

	return ret;
7000 7001
}

7002 7003 7004 7005 7006 7007 7008 7009 7010 7011 7012
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);

7013
	ath10k_dbg(ar, ATH10K_DBG_MAC,
7014 7015 7016 7017 7018 7019 7020 7021 7022 7023 7024 7025 7026 7027 7028 7029 7030 7031
		   "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:
7032 7033 7034
			bw = WMI_PEER_CHWIDTH_160MHZ;
			break;
		default:
7035
			ath10k_warn(ar, "Invalid bandwidth %d in rc update for %pM\n",
7036
				    sta->bandwidth, sta->addr);
7037 7038 7039 7040 7041 7042 7043 7044 7045 7046 7047 7048 7049 7050 7051 7052 7053 7054 7055 7056 7057 7058 7059 7060 7061
			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:
7062
			ath10k_warn(ar, "Invalid smps %d in sta rc update for %pM\n",
7063
				    sta->smps_mode, sta->addr);
7064 7065 7066 7067 7068 7069 7070 7071 7072 7073 7074 7075 7076 7077
			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);
}

7078 7079
static void ath10k_offset_tsf(struct ieee80211_hw *hw,
			      struct ieee80211_vif *vif, s64 tsf_offset)
7080 7081
{
	struct ath10k *ar = hw->priv;
7082
	struct ath10k_vif *arvif = (void *)vif->drv_priv;
7083
	u32 offset, vdev_param;
7084 7085
	int ret;

7086 7087 7088 7089 7090 7091 7092 7093
	if (tsf_offset < 0) {
		vdev_param = ar->wmi.vdev_param->dec_tsf;
		offset = -tsf_offset;
	} else {
		vdev_param = ar->wmi.vdev_param->inc_tsf;
		offset = tsf_offset;
	}

7094
	ret = ath10k_wmi_vdev_set_param(ar, arvif->vdev_id,
7095 7096
					vdev_param, offset);

7097
	if (ret && ret != -EOPNOTSUPP)
7098 7099
		ath10k_warn(ar, "failed to set tsf offset %d cmd %d: %d\n",
			    offset, vdev_param, ret);
7100 7101
}

7102 7103
static int ath10k_ampdu_action(struct ieee80211_hw *hw,
			       struct ieee80211_vif *vif,
7104
			       struct ieee80211_ampdu_params *params)
7105
{
7106
	struct ath10k *ar = hw->priv;
7107
	struct ath10k_vif *arvif = (void *)vif->drv_priv;
7108 7109 7110
	struct ieee80211_sta *sta = params->sta;
	enum ieee80211_ampdu_mlme_action action = params->action;
	u16 tid = params->tid;
7111

7112
	ath10k_dbg(ar, ATH10K_DBG_MAC, "mac ampdu vdev_id %i sta %pM tid %hu action %d\n",
7113 7114 7115 7116 7117 7118 7119 7120 7121 7122 7123 7124 7125 7126 7127 7128 7129 7130 7131 7132 7133 7134 7135
		   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;
}

M
Michal Kazior 已提交
7136
static void
7137 7138 7139 7140
ath10k_mac_update_rx_channel(struct ath10k *ar,
			     struct ieee80211_chanctx_conf *ctx,
			     struct ieee80211_vif_chanctx_switch *vifs,
			     int n_vifs)
M
Michal Kazior 已提交
7141 7142 7143 7144 7145 7146 7147 7148 7149
{
	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);

7150
	WARN_ON(ctx && vifs);
7151
	WARN_ON(vifs && !n_vifs);
7152

M
Michal Kazior 已提交
7153 7154 7155 7156 7157 7158 7159 7160 7161 7162 7163
	/* 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();
7164
	if (!ctx && ath10k_mac_num_chanctxs(ar) == 1) {
M
Michal Kazior 已提交
7165
		ieee80211_iter_chan_contexts_atomic(ar->hw,
K
Kalle Valo 已提交
7166 7167
						    ath10k_mac_get_any_chandef_iter,
						    &def);
7168 7169 7170 7171

		if (vifs)
			def = &vifs[0].new_ctx->def;

M
Michal Kazior 已提交
7172
		ar->rx_channel = def->chan;
7173 7174 7175 7176 7177 7178 7179
	} else if ((ctx && ath10k_mac_num_chanctxs(ar) == 0) ||
		   (ctx && (ar->state == ATH10K_STATE_RESTARTED))) {
		/* During driver restart due to firmware assert, since mac80211
		 * already has valid channel context for given radio, channel
		 * context iteration return num_chanctx > 0. So fix rx_channel
		 * when restart is in progress.
		 */
7180
		ar->rx_channel = ctx->def.chan;
M
Michal Kazior 已提交
7181 7182 7183 7184 7185 7186
	} else {
		ar->rx_channel = NULL;
	}
	rcu_read_unlock();
}

7187 7188 7189 7190 7191 7192 7193 7194 7195 7196 7197 7198 7199 7200 7201 7202 7203 7204
static void
ath10k_mac_update_vif_chan(struct ath10k *ar,
			   struct ieee80211_vif_chanctx_switch *vifs,
			   int n_vifs)
{
	struct ath10k_vif *arvif;
	int ret;
	int i;

	lockdep_assert_held(&ar->conf_mutex);

	/* First stop monitor interface. Some FW versions crash if there's a
	 * lone monitor interface.
	 */
	if (ar->monitor_started)
		ath10k_monitor_stop(ar);

	for (i = 0; i < n_vifs; i++) {
7205
		arvif = (void *)vifs[i].vif->drv_priv;
7206 7207 7208 7209 7210 7211 7212 7213 7214 7215 7216 7217 7218 7219 7220 7221 7222 7223 7224 7225 7226 7227 7228 7229 7230 7231 7232 7233 7234 7235 7236 7237

		ath10k_dbg(ar, ATH10K_DBG_MAC,
			   "mac chanctx switch vdev_id %i freq %hu->%hu width %d->%d\n",
			   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,
			   vifs[i].new_ctx->def.width);

		if (WARN_ON(!arvif->is_started))
			continue;

		if (WARN_ON(!arvif->is_up))
			continue;

		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;
		}
	}

	/* All relevant vdevs are downed and associated channel resources
	 * should be available for the channel switch now.
	 */

	spin_lock_bh(&ar->data_lock);
	ath10k_mac_update_rx_channel(ar, NULL, vifs, n_vifs);
	spin_unlock_bh(&ar->data_lock);

	for (i = 0; i < n_vifs; i++) {
7238
		arvif = (void *)vifs[i].vif->drv_priv;
7239 7240 7241 7242 7243 7244 7245 7246 7247 7248 7249 7250 7251 7252 7253 7254 7255 7256 7257 7258 7259 7260 7261 7262 7263 7264 7265 7266 7267 7268 7269 7270 7271 7272 7273 7274

		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);
}

M
Michal Kazior 已提交
7275 7276 7277 7278 7279 7280 7281
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,
7282
		   "mac chanctx add freq %hu width %d ptr %pK\n",
M
Michal Kazior 已提交
7283 7284 7285 7286 7287
		   ctx->def.chan->center_freq, ctx->def.width, ctx);

	mutex_lock(&ar->conf_mutex);

	spin_lock_bh(&ar->data_lock);
7288
	ath10k_mac_update_rx_channel(ar, ctx, NULL, 0);
M
Michal Kazior 已提交
7289 7290 7291 7292 7293 7294 7295 7296 7297 7298 7299 7300 7301 7302 7303 7304 7305
	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,
7306
		   "mac chanctx remove freq %hu width %d ptr %pK\n",
M
Michal Kazior 已提交
7307 7308 7309 7310 7311
		   ctx->def.chan->center_freq, ctx->def.width, ctx);

	mutex_lock(&ar->conf_mutex);

	spin_lock_bh(&ar->data_lock);
7312
	ath10k_mac_update_rx_channel(ar, NULL, NULL, 0);
M
Michal Kazior 已提交
7313 7314 7315 7316 7317 7318 7319 7320
	spin_unlock_bh(&ar->data_lock);

	ath10k_recalc_radar_detection(ar);
	ath10k_monitor_recalc(ar);

	mutex_unlock(&ar->conf_mutex);
}

7321 7322 7323 7324 7325 7326 7327 7328 7329 7330 7331 7332 7333 7334 7335 7336 7337 7338 7339 7340 7341 7342 7343 7344 7345 7346 7347 7348 7349 7350 7351 7352 7353 7354 7355 7356 7357 7358 7359
struct ath10k_mac_change_chanctx_arg {
	struct ieee80211_chanctx_conf *ctx;
	struct ieee80211_vif_chanctx_switch *vifs;
	int n_vifs;
	int next_vif;
};

static void
ath10k_mac_change_chanctx_cnt_iter(void *data, u8 *mac,
				   struct ieee80211_vif *vif)
{
	struct ath10k_mac_change_chanctx_arg *arg = data;

	if (rcu_access_pointer(vif->chanctx_conf) != arg->ctx)
		return;

	arg->n_vifs++;
}

static void
ath10k_mac_change_chanctx_fill_iter(void *data, u8 *mac,
				    struct ieee80211_vif *vif)
{
	struct ath10k_mac_change_chanctx_arg *arg = data;
	struct ieee80211_chanctx_conf *ctx;

	ctx = rcu_access_pointer(vif->chanctx_conf);
	if (ctx != arg->ctx)
		return;

	if (WARN_ON(arg->next_vif == arg->n_vifs))
		return;

	arg->vifs[arg->next_vif].vif = vif;
	arg->vifs[arg->next_vif].old_ctx = ctx;
	arg->vifs[arg->next_vif].new_ctx = ctx;
	arg->next_vif++;
}

M
Michal Kazior 已提交
7360 7361 7362 7363 7364 7365
static void
ath10k_mac_op_change_chanctx(struct ieee80211_hw *hw,
			     struct ieee80211_chanctx_conf *ctx,
			     u32 changed)
{
	struct ath10k *ar = hw->priv;
7366
	struct ath10k_mac_change_chanctx_arg arg = { .ctx = ctx };
M
Michal Kazior 已提交
7367 7368 7369 7370

	mutex_lock(&ar->conf_mutex);

	ath10k_dbg(ar, ATH10K_DBG_MAC,
7371
		   "mac chanctx change freq %hu width %d ptr %pK changed %x\n",
7372
		   ctx->def.chan->center_freq, ctx->def.width, ctx, changed);
M
Michal Kazior 已提交
7373 7374 7375 7376 7377 7378 7379

	/* This shouldn't really happen because channel switching should use
	 * switch_vif_chanctx().
	 */
	if (WARN_ON(changed & IEEE80211_CHANCTX_CHANGE_CHANNEL))
		goto unlock;

7380 7381 7382 7383 7384 7385 7386 7387 7388 7389 7390 7391 7392 7393 7394 7395 7396 7397 7398 7399 7400 7401 7402 7403
	if (changed & IEEE80211_CHANCTX_CHANGE_WIDTH) {
		ieee80211_iterate_active_interfaces_atomic(
					hw,
					IEEE80211_IFACE_ITER_NORMAL,
					ath10k_mac_change_chanctx_cnt_iter,
					&arg);
		if (arg.n_vifs == 0)
			goto radar;

		arg.vifs = kcalloc(arg.n_vifs, sizeof(arg.vifs[0]),
				   GFP_KERNEL);
		if (!arg.vifs)
			goto radar;

		ieee80211_iterate_active_interfaces_atomic(
					hw,
					IEEE80211_IFACE_ITER_NORMAL,
					ath10k_mac_change_chanctx_fill_iter,
					&arg);
		ath10k_mac_update_vif_chan(ar, arg.vifs, arg.n_vifs);
		kfree(arg.vifs);
	}

radar:
M
Michal Kazior 已提交
7404 7405 7406 7407 7408 7409 7410 7411 7412 7413 7414 7415 7416 7417 7418 7419 7420 7421 7422 7423 7424 7425 7426 7427 7428
	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,
7429
		   "mac chanctx assign ptr %pK vdev_id %i\n",
M
Michal Kazior 已提交
7430 7431 7432 7433 7434 7435 7436
		   ctx, arvif->vdev_id);

	if (WARN_ON(arvif->is_started)) {
		mutex_unlock(&ar->conf_mutex);
		return -EBUSY;
	}

7437
	ret = ath10k_vdev_start(arvif, &ctx->def);
M
Michal Kazior 已提交
7438 7439 7440
	if (ret) {
		ath10k_warn(ar, "failed to start vdev %i addr %pM on freq %d: %d\n",
			    arvif->vdev_id, vif->addr,
7441
			    ctx->def.chan->center_freq, ret);
M
Michal Kazior 已提交
7442 7443 7444 7445 7446
		goto err;
	}

	arvif->is_started = true;

7447 7448 7449 7450 7451 7452 7453
	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;
	}

M
Michal Kazior 已提交
7454 7455 7456 7457 7458 7459 7460 7461 7462 7463 7464
	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;
	}

7465 7466 7467 7468 7469 7470 7471
	if (ath10k_mac_can_set_cts_prot(arvif)) {
		ret = ath10k_mac_set_cts_prot(arvif);
		if (ret)
			ath10k_warn(ar, "failed to set cts protection for vdev %d: %d\n",
				    arvif->vdev_id, ret);
	}

M
Michal Kazior 已提交
7472 7473 7474 7475 7476 7477
	mutex_unlock(&ar->conf_mutex);
	return 0;

err_stop:
	ath10k_vdev_stop(arvif);
	arvif->is_started = false;
7478
	ath10k_mac_vif_setup_ps(arvif);
M
Michal Kazior 已提交
7479 7480 7481 7482 7483 7484 7485 7486 7487 7488 7489 7490 7491 7492 7493 7494 7495 7496

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,
7497
		   "mac chanctx unassign ptr %pK vdev_id %i\n",
M
Michal Kazior 已提交
7498 7499 7500 7501 7502 7503 7504 7505 7506 7507 7508 7509 7510 7511 7512 7513 7514 7515 7516 7517 7518 7519 7520 7521 7522 7523 7524 7525 7526 7527 7528 7529 7530 7531 7532 7533 7534 7535
		   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;

	mutex_lock(&ar->conf_mutex);

	ath10k_dbg(ar, ATH10K_DBG_MAC,
		   "mac chanctx switch n_vifs %d mode %d\n",
		   n_vifs, mode);
7536
	ath10k_mac_update_vif_chan(ar, vifs, n_vifs);
M
Michal Kazior 已提交
7537 7538 7539 7540 7541

	mutex_unlock(&ar->conf_mutex);
	return 0;
}

7542 7543 7544 7545 7546 7547 7548 7549 7550 7551 7552 7553 7554 7555
static void ath10k_mac_op_sta_pre_rcu_remove(struct ieee80211_hw *hw,
					     struct ieee80211_vif *vif,
					     struct ieee80211_sta *sta)
{
	struct ath10k *ar;
	struct ath10k_peer *peer;

	ar = hw->priv;

	list_for_each_entry(peer, &ar->peers, list)
		if (peer->sta == sta)
			peer->removed = true;
}

7556
static const struct ieee80211_ops ath10k_ops = {
M
Michal Kazior 已提交
7557
	.tx				= ath10k_mac_op_tx,
M
Michal Kazior 已提交
7558
	.wake_tx_queue			= ath10k_mac_op_wake_tx_queue,
7559 7560 7561 7562 7563 7564 7565
	.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,
7566
	.set_coverage_class		= ath10k_mac_op_set_coverage_class,
7567 7568 7569
	.hw_scan			= ath10k_hw_scan,
	.cancel_hw_scan			= ath10k_cancel_hw_scan,
	.set_key			= ath10k_set_key,
7570
	.set_default_unicast_key        = ath10k_set_default_unicast_key,
7571 7572 7573 7574 7575
	.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,
7576
	.set_frag_threshold		= ath10k_mac_op_set_frag_threshold,
7577 7578
	.flush				= ath10k_flush,
	.tx_last_beacon			= ath10k_tx_last_beacon,
7579 7580
	.set_antenna			= ath10k_set_antenna,
	.get_antenna			= ath10k_get_antenna,
7581
	.reconfig_complete		= ath10k_reconfig_complete,
M
Michal Kazior 已提交
7582
	.get_survey			= ath10k_get_survey,
7583
	.set_bitrate_mask		= ath10k_mac_op_set_bitrate_mask,
7584
	.sta_rc_update			= ath10k_sta_rc_update,
7585
	.offset_tsf			= ath10k_offset_tsf,
7586
	.ampdu_action			= ath10k_ampdu_action,
B
Ben Greear 已提交
7587 7588 7589
	.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,
M
Michal Kazior 已提交
7590 7591 7592 7593 7594 7595
	.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,
7596
	.sta_pre_rcu_remove		= ath10k_mac_op_sta_pre_rcu_remove,
K
Kalle Valo 已提交
7597 7598 7599

	CFG80211_TESTMODE_CMD(ath10k_tm_cmd)

M
Michal Kazior 已提交
7600
#ifdef CONFIG_PM
7601 7602
	.suspend			= ath10k_wow_op_suspend,
	.resume				= ath10k_wow_op_resume,
M
Michal Kazior 已提交
7603
#endif
7604 7605
#ifdef CONFIG_MAC80211_DEBUGFS
	.sta_add_debugfs		= ath10k_sta_add_debugfs,
7606
	.sta_statistics			= ath10k_sta_statistics,
7607
#endif
7608 7609 7610
};

#define CHAN2G(_channel, _freq, _flags) { \
7611
	.band			= NL80211_BAND_2GHZ, \
7612 7613 7614 7615 7616 7617 7618 7619
	.hw_value		= (_channel), \
	.center_freq		= (_freq), \
	.flags			= (_flags), \
	.max_antenna_gain	= 0, \
	.max_power		= 30, \
}

#define CHAN5G(_channel, _freq, _flags) { \
7620
	.band			= NL80211_BAND_5GHZ, \
7621 7622 7623 7624 7625 7626 7627 7628 7629 7630 7631 7632 7633 7634 7635 7636 7637 7638 7639 7640 7641 7642 7643 7644 7645
	.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[] = {
7646 7647 7648 7649 7650 7651 7652 7653 7654 7655 7656 7657 7658 7659 7660 7661 7662 7663 7664
	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),
7665
	CHAN5G(144, 5720, 0),
7666 7667 7668 7669 7670
	CHAN5G(149, 5745, 0),
	CHAN5G(153, 5765, 0),
	CHAN5G(157, 5785, 0),
	CHAN5G(161, 5805, 0),
	CHAN5G(165, 5825, 0),
7671
	CHAN5G(169, 5845, 0),
7672 7673
};

M
Michal Kazior 已提交
7674
struct ath10k *ath10k_mac_create(size_t priv_size)
7675 7676
{
	struct ieee80211_hw *hw;
7677
	struct ieee80211_ops *ops;
7678 7679
	struct ath10k *ar;

7680 7681
	ops = kmemdup(&ath10k_ops, sizeof(ath10k_ops), GFP_KERNEL);
	if (!ops)
7682 7683
		return NULL;

7684 7685 7686 7687 7688 7689
	hw = ieee80211_alloc_hw(sizeof(struct ath10k) + priv_size, ops);
	if (!hw) {
		kfree(ops);
		return NULL;
	}

7690 7691
	ar = hw->priv;
	ar->hw = hw;
7692
	ar->ops = ops;
7693 7694 7695 7696 7697 7698

	return ar;
}

void ath10k_mac_destroy(struct ath10k *ar)
{
7699 7700
	struct ieee80211_ops *ops = ar->ops;

7701
	ieee80211_free_hw(ar->hw);
7702
	kfree(ops);
7703 7704 7705 7706
}

static const struct ieee80211_iface_limit ath10k_if_limits[] = {
	{
7707 7708 7709
		.max	= 8,
		.types	= BIT(NL80211_IFTYPE_STATION)
			| BIT(NL80211_IFTYPE_P2P_CLIENT)
7710 7711
	},
	{
7712 7713
		.max	= 3,
		.types	= BIT(NL80211_IFTYPE_P2P_GO)
7714 7715
	},
	{
7716 7717
		.max	= 1,
		.types	= BIT(NL80211_IFTYPE_P2P_DEVICE)
M
Michal Kazior 已提交
7718 7719
	},
	{
7720 7721
		.max	= 7,
		.types	= BIT(NL80211_IFTYPE_AP)
B
Bob Copeland 已提交
7722
#ifdef CONFIG_MAC80211_MESH
7723
			| BIT(NL80211_IFTYPE_MESH_POINT)
B
Bob Copeland 已提交
7724
#endif
7725
	},
7726 7727
};

7728
static const struct ieee80211_iface_limit ath10k_10x_if_limits[] = {
7729
	{
7730 7731
		.max	= 8,
		.types	= BIT(NL80211_IFTYPE_AP)
B
Bob Copeland 已提交
7732
#ifdef CONFIG_MAC80211_MESH
7733
			| BIT(NL80211_IFTYPE_MESH_POINT)
B
Bob Copeland 已提交
7734
#endif
7735
	},
7736 7737 7738 7739
	{
		.max	= 1,
		.types	= BIT(NL80211_IFTYPE_STATION)
	},
7740 7741 7742 7743 7744 7745 7746 7747 7748 7749
};

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,
	},
7750 7751 7752
};

static const struct ieee80211_iface_combination ath10k_10x_if_comb[] = {
7753
	{
7754 7755
		.limits = ath10k_10x_if_limits,
		.n_limits = ARRAY_SIZE(ath10k_10x_if_limits),
7756 7757 7758
		.max_interfaces = 8,
		.num_different_channels = 1,
		.beacon_int_infra_match = true,
7759
#ifdef CONFIG_ATH10K_DFS_CERTIFIED
7760 7761 7762 7763 7764
		.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
7765
	},
7766 7767
};

7768 7769 7770
static const struct ieee80211_iface_limit ath10k_tlv_if_limit[] = {
	{
		.max = 2,
7771 7772 7773 7774 7775
		.types = BIT(NL80211_IFTYPE_STATION),
	},
	{
		.max = 2,
		.types = BIT(NL80211_IFTYPE_AP) |
B
Bob Copeland 已提交
7776 7777 7778
#ifdef CONFIG_MAC80211_MESH
			 BIT(NL80211_IFTYPE_MESH_POINT) |
#endif
7779 7780 7781 7782 7783 7784 7785 7786 7787
			 BIT(NL80211_IFTYPE_P2P_CLIENT) |
			 BIT(NL80211_IFTYPE_P2P_GO),
	},
	{
		.max = 1,
		.types = BIT(NL80211_IFTYPE_P2P_DEVICE),
	},
};

7788 7789 7790 7791 7792 7793 7794 7795 7796 7797 7798 7799
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) |
B
Bob Copeland 已提交
7800 7801 7802
#ifdef CONFIG_MAC80211_MESH
			 BIT(NL80211_IFTYPE_MESH_POINT) |
#endif
7803 7804 7805 7806 7807 7808 7809 7810
			 BIT(NL80211_IFTYPE_P2P_GO),
	},
	{
		.max = 1,
		.types = BIT(NL80211_IFTYPE_P2P_DEVICE),
	},
};

7811 7812 7813 7814 7815 7816 7817 7818 7819 7820 7821 7822 7823 7824 7825 7826 7827 7828
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,
7829
		.max_interfaces = 4,
7830 7831 7832 7833 7834 7835 7836 7837 7838 7839 7840 7841 7842
		.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,
7843 7844
		.num_different_channels = 1,
		.max_interfaces = 4,
7845 7846
		.n_limits = ARRAY_SIZE(ath10k_tlv_if_limit),
	},
7847 7848 7849 7850 7851 7852
	{
		.limits = ath10k_tlv_qcs_if_limit,
		.num_different_channels = 2,
		.max_interfaces = 4,
		.n_limits = ARRAY_SIZE(ath10k_tlv_qcs_if_limit),
	},
7853 7854 7855 7856 7857 7858 7859 7860
	{
		.limits = ath10k_tlv_if_limit_ibss,
		.num_different_channels = 1,
		.max_interfaces = 2,
		.n_limits = ARRAY_SIZE(ath10k_tlv_if_limit_ibss),
	},
};

7861 7862 7863 7864 7865 7866 7867 7868
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)
B
Bob Copeland 已提交
7869 7870 7871
#ifdef CONFIG_MAC80211_MESH
			| BIT(NL80211_IFTYPE_MESH_POINT)
#endif
7872 7873 7874 7875 7876 7877 7878 7879 7880 7881 7882 7883 7884 7885 7886 7887 7888 7889 7890
	},
};

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
	},
};

7891 7892 7893 7894
static void ath10k_get_arvif_iter(void *data, u8 *mac,
				  struct ieee80211_vif *vif)
{
	struct ath10k_vif_iter *arvif_iter = data;
7895
	struct ath10k_vif *arvif = (void *)vif->drv_priv;
7896 7897 7898 7899 7900 7901 7902 7903 7904 7905 7906 7907 7908 7909 7910 7911 7912 7913 7914

	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) {
7915
		ath10k_warn(ar, "No VIF found for vdev %d\n", vdev_id);
7916 7917 7918 7919 7920 7921
		return NULL;
	}

	return arvif_iter.arvif;
}

7922 7923 7924 7925 7926 7927 7928 7929 7930 7931 7932 7933 7934 7935 7936 7937 7938 7939 7940 7941 7942 7943 7944 7945 7946 7947 7948 7949 7950 7951 7952 7953 7954 7955 7956 7957 7958 7959 7960 7961 7962 7963 7964 7965 7966 7967 7968 7969 7970 7971 7972 7973 7974 7975 7976 7977 7978 7979 7980 7981 7982 7983 7984 7985 7986 7987 7988 7989 7990 7991 7992 7993 7994 7995 7996 7997 7998 7999 8000 8001 8002 8003 8004 8005 8006 8007 8008 8009 8010 8011 8012 8013 8014 8015 8016 8017 8018 8019 8020 8021 8022 8023 8024
#define WRD_METHOD "WRDD"
#define WRDD_WIFI  (0x07)

static u32 ath10k_mac_wrdd_get_mcc(struct ath10k *ar, union acpi_object *wrdd)
{
	union acpi_object *mcc_pkg;
	union acpi_object *domain_type;
	union acpi_object *mcc_value;
	u32 i;

	if (wrdd->type != ACPI_TYPE_PACKAGE ||
	    wrdd->package.count < 2 ||
	    wrdd->package.elements[0].type != ACPI_TYPE_INTEGER ||
	    wrdd->package.elements[0].integer.value != 0) {
		ath10k_warn(ar, "ignoring malformed/unsupported wrdd structure\n");
		return 0;
	}

	for (i = 1; i < wrdd->package.count; ++i) {
		mcc_pkg = &wrdd->package.elements[i];

		if (mcc_pkg->type != ACPI_TYPE_PACKAGE)
			continue;
		if (mcc_pkg->package.count < 2)
			continue;
		if (mcc_pkg->package.elements[0].type != ACPI_TYPE_INTEGER ||
		    mcc_pkg->package.elements[1].type != ACPI_TYPE_INTEGER)
			continue;

		domain_type = &mcc_pkg->package.elements[0];
		if (domain_type->integer.value != WRDD_WIFI)
			continue;

		mcc_value = &mcc_pkg->package.elements[1];
		return mcc_value->integer.value;
	}
	return 0;
}

static int ath10k_mac_get_wrdd_regulatory(struct ath10k *ar, u16 *rd)
{
	struct pci_dev __maybe_unused *pdev = to_pci_dev(ar->dev);
	acpi_handle root_handle;
	acpi_handle handle;
	struct acpi_buffer wrdd = {ACPI_ALLOCATE_BUFFER, NULL};
	acpi_status status;
	u32 alpha2_code;
	char alpha2[3];

	root_handle = ACPI_HANDLE(&pdev->dev);
	if (!root_handle)
		return -EOPNOTSUPP;

	status = acpi_get_handle(root_handle, (acpi_string)WRD_METHOD, &handle);
	if (ACPI_FAILURE(status)) {
		ath10k_dbg(ar, ATH10K_DBG_BOOT,
			   "failed to get wrd method %d\n", status);
		return -EIO;
	}

	status = acpi_evaluate_object(handle, NULL, NULL, &wrdd);
	if (ACPI_FAILURE(status)) {
		ath10k_dbg(ar, ATH10K_DBG_BOOT,
			   "failed to call wrdc %d\n", status);
		return -EIO;
	}

	alpha2_code = ath10k_mac_wrdd_get_mcc(ar, wrdd.pointer);
	kfree(wrdd.pointer);
	if (!alpha2_code)
		return -EIO;

	alpha2[0] = (alpha2_code >> 8) & 0xff;
	alpha2[1] = (alpha2_code >> 0) & 0xff;
	alpha2[2] = '\0';

	ath10k_dbg(ar, ATH10K_DBG_BOOT,
		   "regulatory hint from WRDD (alpha2-code): %s\n", alpha2);

	*rd = ath_regd_find_country_by_name(alpha2);
	if (*rd == 0xffff)
		return -EIO;

	*rd |= COUNTRY_ERD_FLAG;
	return 0;
}

static int ath10k_mac_init_rd(struct ath10k *ar)
{
	int ret;
	u16 rd;

	ret = ath10k_mac_get_wrdd_regulatory(ar, &rd);
	if (ret) {
		ath10k_dbg(ar, ATH10K_DBG_BOOT,
			   "fallback to eeprom programmed regulatory settings\n");
		rd = ar->hw_eeprom_rd;
	}

	ar->ath_common.regulatory.current_rd = rd;
	return 0;
}

8025 8026
int ath10k_mac_register(struct ath10k *ar)
{
8027 8028 8029 8030 8031 8032 8033
	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,
	};
8034 8035 8036 8037 8038 8039 8040 8041
	struct ieee80211_supported_band *band;
	void *channels;
	int ret;

	SET_IEEE80211_PERM_ADDR(ar->hw, ar->mac_addr);

	SET_IEEE80211_DEV(ar->hw, ar->dev);

M
Michal Kazior 已提交
8042 8043 8044 8045
	BUILD_BUG_ON((ARRAY_SIZE(ath10k_2ghz_channels) +
		      ARRAY_SIZE(ath10k_5ghz_channels)) !=
		     ATH10K_NUM_CHANS);

8046 8047 8048 8049
	if (ar->phy_capability & WHAL_WLAN_11G_CAPABILITY) {
		channels = kmemdup(ath10k_2ghz_channels,
				   sizeof(ath10k_2ghz_channels),
				   GFP_KERNEL);
M
Michal Kazior 已提交
8050 8051 8052 8053
		if (!channels) {
			ret = -ENOMEM;
			goto err_free;
		}
8054

8055
		band = &ar->mac.sbands[NL80211_BAND_2GHZ];
8056 8057
		band->n_channels = ARRAY_SIZE(ath10k_2ghz_channels);
		band->channels = channels;
8058 8059 8060 8061 8062 8063 8064 8065

		if (ar->hw_params.cck_rate_map_rev2) {
			band->n_bitrates = ath10k_g_rates_rev2_size;
			band->bitrates = ath10k_g_rates_rev2;
		} else {
			band->n_bitrates = ath10k_g_rates_size;
			band->bitrates = ath10k_g_rates;
		}
8066

8067
		ar->hw->wiphy->bands[NL80211_BAND_2GHZ] = band;
8068 8069 8070 8071 8072 8073 8074
	}

	if (ar->phy_capability & WHAL_WLAN_11A_CAPABILITY) {
		channels = kmemdup(ath10k_5ghz_channels,
				   sizeof(ath10k_5ghz_channels),
				   GFP_KERNEL);
		if (!channels) {
M
Michal Kazior 已提交
8075 8076
			ret = -ENOMEM;
			goto err_free;
8077 8078
		}

8079
		band = &ar->mac.sbands[NL80211_BAND_5GHZ];
8080 8081 8082 8083
		band->n_channels = ARRAY_SIZE(ath10k_5ghz_channels);
		band->channels = channels;
		band->n_bitrates = ath10k_a_rates_size;
		band->bitrates = ath10k_a_rates;
8084
		ar->hw->wiphy->bands[NL80211_BAND_5GHZ] = band;
8085 8086
	}

8087 8088
	ath10k_mac_setup_ht_vht_cap(ar);

8089 8090
	ar->hw->wiphy->interface_modes =
		BIT(NL80211_IFTYPE_STATION) |
B
Bob Copeland 已提交
8091 8092
		BIT(NL80211_IFTYPE_AP) |
		BIT(NL80211_IFTYPE_MESH_POINT);
8093

8094 8095
	ar->hw->wiphy->available_antennas_rx = ar->cfg_rx_chainmask;
	ar->hw->wiphy->available_antennas_tx = ar->cfg_tx_chainmask;
8096

8097
	if (!test_bit(ATH10K_FW_FEATURE_NO_P2P, ar->normal_mode_fw.fw_file.fw_features))
8098
		ar->hw->wiphy->interface_modes |=
M
Michal Kazior 已提交
8099
			BIT(NL80211_IFTYPE_P2P_DEVICE) |
8100 8101
			BIT(NL80211_IFTYPE_P2P_CLIENT) |
			BIT(NL80211_IFTYPE_P2P_GO);
8102

8103 8104 8105 8106 8107 8108 8109 8110 8111 8112 8113 8114 8115 8116
	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);
8117
	ieee80211_hw_set(ar->hw, SUPPORTS_TX_FRAG);
8118
	ieee80211_hw_set(ar->hw, REPORTS_LOW_ACK);
8119

8120 8121 8122
	if (!test_bit(ATH10K_FLAG_RAW_MODE, &ar->dev_flags))
		ieee80211_hw_set(ar->hw, SW_CRYPTO_CONTROL);

8123
	ar->hw->wiphy->features |= NL80211_FEATURE_STATIC_SMPS;
J
Janusz Dziedzic 已提交
8124
	ar->hw->wiphy->flags |= WIPHY_FLAG_IBSS_RSN;
8125

8126
	if (ar->ht_cap_info & WMI_HT_CAP_DYNAMIC_SMPS)
8127
		ar->hw->wiphy->features |= NL80211_FEATURE_DYNAMIC_SMPS;
8128 8129

	if (ar->ht_cap_info & WMI_HT_CAP_ENABLED) {
8130 8131
		ieee80211_hw_set(ar->hw, AMPDU_AGGREGATION);
		ieee80211_hw_set(ar->hw, TX_AMPDU_SETUP_IN_HW);
8132 8133 8134 8135 8136 8137
	}

	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);
8138
	ar->hw->sta_data_size = sizeof(struct ath10k_sta);
M
Michal Kazior 已提交
8139
	ar->hw->txq_data_size = sizeof(struct ath10k_txq);
8140 8141 8142

	ar->hw->max_listen_interval = ATH10K_MAX_HW_LISTEN_INTERVAL;

8143 8144 8145 8146 8147 8148 8149 8150 8151 8152 8153 8154 8155
	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;
	}

8156 8157 8158
	if (test_bit(WMI_SERVICE_TDLS, ar->wmi.svc_map))
		ar->hw->wiphy->flags |= WIPHY_FLAG_SUPPORTS_TDLS;

8159
	ar->hw->wiphy->flags |= WIPHY_FLAG_HAS_REMAIN_ON_CHANNEL;
M
Michal Kazior 已提交
8160
	ar->hw->wiphy->flags |= WIPHY_FLAG_HAS_CHANNEL_SWITCH;
8161 8162 8163
	ar->hw->wiphy->max_remain_on_channel_duration = 5000;

	ar->hw->wiphy->flags |= WIPHY_FLAG_AP_UAPSD;
8164 8165
	ar->hw->wiphy->features |= NL80211_FEATURE_AP_MODE_CHAN_WIDTH_CHANGE |
				   NL80211_FEATURE_AP_SCAN;
8166

8167 8168
	ar->hw->wiphy->max_ap_assoc_sta = ar->max_num_stations;

8169 8170 8171 8172 8173 8174
	ret = ath10k_wow_init(ar);
	if (ret) {
		ath10k_warn(ar, "failed to init wow: %d\n", ret);
		goto err_free;
	}

J
Janusz Dziedzic 已提交
8175 8176
	wiphy_ext_feature_set(ar->hw->wiphy, NL80211_EXT_FEATURE_VHT_IBSS);

8177 8178 8179 8180
	/*
	 * on LL hardware queues are managed entirely by the FW
	 * so we only advertise to mac we can do the queues thing
	 */
M
Michal Kazior 已提交
8181 8182 8183 8184 8185 8186 8187
	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;
8188

8189
	switch (ar->running_fw->fw_file.wmi_op_version) {
8190
	case ATH10K_FW_WMI_OP_VERSION_MAIN:
8191 8192 8193
		ar->hw->wiphy->iface_combinations = ath10k_if_comb;
		ar->hw->wiphy->n_iface_combinations =
			ARRAY_SIZE(ath10k_if_comb);
8194
		ar->hw->wiphy->interface_modes |= BIT(NL80211_IFTYPE_ADHOC);
8195
		break;
8196 8197 8198 8199 8200 8201 8202 8203 8204 8205 8206 8207 8208
	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;
8209 8210
	case ATH10K_FW_WMI_OP_VERSION_10_1:
	case ATH10K_FW_WMI_OP_VERSION_10_2:
8211
	case ATH10K_FW_WMI_OP_VERSION_10_2_4:
8212 8213 8214 8215
		ar->hw->wiphy->iface_combinations = ath10k_10x_if_comb;
		ar->hw->wiphy->n_iface_combinations =
			ARRAY_SIZE(ath10k_10x_if_comb);
		break;
8216
	case ATH10K_FW_WMI_OP_VERSION_10_4:
8217 8218 8219
		ar->hw->wiphy->iface_combinations = ath10k_10_4_if_comb;
		ar->hw->wiphy->n_iface_combinations =
			ARRAY_SIZE(ath10k_10_4_if_comb);
8220
		break;
8221 8222 8223 8224 8225
	case ATH10K_FW_WMI_OP_VERSION_UNSET:
	case ATH10K_FW_WMI_OP_VERSION_MAX:
		WARN_ON(1);
		ret = -EINVAL;
		goto err_free;
8226
	}
8227

8228 8229
	if (!test_bit(ATH10K_FLAG_RAW_MODE, &ar->dev_flags))
		ar->hw->netdev_features = NETIF_F_HW_CSUM;
8230

8231
	if (IS_ENABLED(CONFIG_ATH10K_DFS_CERTIFIED)) {
J
Janusz Dziedzic 已提交
8232 8233 8234 8235 8236 8237
		/* 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)
8238
			ath10k_warn(ar, "failed to initialise DFS pattern detector\n");
J
Janusz Dziedzic 已提交
8239 8240
	}

8241 8242 8243 8244 8245 8246 8247 8248 8249
	/* Current wake_tx_queue implementation imposes a significant
	 * performance penalty in some setups. The tx scheduling code needs
	 * more work anyway so disable the wake_tx_queue unless firmware
	 * supports the pull-push mechanism.
	 */
	if (!test_bit(ATH10K_FW_FEATURE_PEER_FLOW_CONTROL,
		      ar->running_fw->fw_file.fw_features))
		ar->ops->wake_tx_queue = NULL;

8250 8251 8252 8253 8254 8255
	ret = ath10k_mac_init_rd(ar);
	if (ret) {
		ath10k_err(ar, "failed to derive regdom: %d\n", ret);
		goto err_dfs_detector_exit;
	}

8256 8257 8258 8259
	/* Disable set_coverage_class for chipsets that do not support it. */
	if (!ar->hw_params.hw_ops->set_coverage_class)
		ar->ops->set_coverage_class = NULL;

8260 8261 8262
	ret = ath_regd_init(&ar->ath_common.regulatory, ar->hw->wiphy,
			    ath10k_reg_notifier);
	if (ret) {
8263
		ath10k_err(ar, "failed to initialise regulatory: %i\n", ret);
8264
		goto err_dfs_detector_exit;
8265 8266
	}

8267 8268 8269
	ar->hw->wiphy->cipher_suites = cipher_suites;
	ar->hw->wiphy->n_cipher_suites = ARRAY_SIZE(cipher_suites);

8270 8271
	ret = ieee80211_register_hw(ar->hw);
	if (ret) {
8272
		ath10k_err(ar, "failed to register ieee80211: %d\n", ret);
8273
		goto err_dfs_detector_exit;
8274 8275 8276 8277 8278 8279
	}

	if (!ath_is_world_regd(&ar->ath_common.regulatory)) {
		ret = regulatory_hint(ar->hw->wiphy,
				      ar->ath_common.regulatory.alpha2);
		if (ret)
M
Michal Kazior 已提交
8280
			goto err_unregister;
8281 8282 8283
	}

	return 0;
M
Michal Kazior 已提交
8284 8285

err_unregister:
8286
	ieee80211_unregister_hw(ar->hw);
8287 8288

err_dfs_detector_exit:
8289
	if (IS_ENABLED(CONFIG_ATH10K_DFS_CERTIFIED) && ar->dfs_detector)
8290 8291
		ar->dfs_detector->exit(ar->dfs_detector);

M
Michal Kazior 已提交
8292
err_free:
8293 8294
	kfree(ar->mac.sbands[NL80211_BAND_2GHZ].channels);
	kfree(ar->mac.sbands[NL80211_BAND_5GHZ].channels);
M
Michal Kazior 已提交
8295

8296
	SET_IEEE80211_DEV(ar->hw, NULL);
8297 8298 8299 8300 8301 8302 8303
	return ret;
}

void ath10k_mac_unregister(struct ath10k *ar)
{
	ieee80211_unregister_hw(ar->hw);

8304
	if (IS_ENABLED(CONFIG_ATH10K_DFS_CERTIFIED) && ar->dfs_detector)
J
Janusz Dziedzic 已提交
8305 8306
		ar->dfs_detector->exit(ar->dfs_detector);

8307 8308
	kfree(ar->mac.sbands[NL80211_BAND_2GHZ].channels);
	kfree(ar->mac.sbands[NL80211_BAND_5GHZ].channels);
8309 8310 8311

	SET_IEEE80211_DEV(ar->hw, NULL);
}