mac.c 180.3 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 "hif.h"
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#include "core.h"
#include "debug.h"
#include "wmi.h"
#include "htt.h"
#include "txrx.h"
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#include "testmode.h"
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#include "wmi.h"
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#include "wmi-tlv.h"
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#include "wmi-ops.h"
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#include "wow.h"
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/*********/
/* Rates */
/*********/

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

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#define ATH10K_MAC_FIRST_OFDM_RATE_IDX 4

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

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

	return false;
}

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

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

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

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

	return 0;
}

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

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

	return 0;
}

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

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

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

	return 1;
}

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

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

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

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

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

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

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

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

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

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

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

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

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

	return 0;
}

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

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

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

	if (!peer)
		return -ENOENT;

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

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

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

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

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

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

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

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	return 0;
}

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

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

	if (!peer)
		return -ENOENT;

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

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

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

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

	return first_errno;
}

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

	lockdep_assert_held(&ar->data_lock);

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

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

	return false;
}

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

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

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

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

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

	return first_errno;
}

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

	lockdep_assert_held(&ar->conf_mutex);

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

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

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

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

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

	return 0;
}

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

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

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

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

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

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

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

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

	return 0;
}

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

	(*num)++;
}

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

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

	return num;
}

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

	*def = &conf->def;
}

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

	lockdep_assert_held(&ar->conf_mutex);

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	num_peers = ar->num_peers;

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

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

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

655 656 657 658 659 660 661 662 663 664
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) {
665
		ath10k_warn(ar, "failed to set kickout threshold on vdev %i: %d\n",
666
			    arvif->vdev_id, ret);
667 668 669 670 671 672 673
		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) {
674
		ath10k_warn(ar, "failed to set keepalive minimum idle time on vdev %i: %d\n",
675
			    arvif->vdev_id, ret);
676 677 678 679 680 681 682
		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) {
683
		ath10k_warn(ar, "failed to set keepalive maximum idle time on vdev %i: %d\n",
684
			    arvif->vdev_id, ret);
685 686 687 688 689 690 691
		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) {
692
		ath10k_warn(ar, "failed to set keepalive maximum unresponsive time on vdev %i: %d\n",
693
			    arvif->vdev_id, ret);
694 695 696 697 698 699
		return ret;
	}

	return 0;
}

700
static int ath10k_mac_set_rts(struct ath10k_vif *arvif, u32 value)
701
{
702 703 704 705 706
	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);
707 708
}

709 710 711 712 713 714 715 716 717 718 719 720 721 722
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;

723 724
	ar->num_peers--;

725 726 727 728 729 730 731 732 733 734 735 736 737 738
	return 0;
}

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

	lockdep_assert_held(&ar->conf_mutex);

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

739
		ath10k_warn(ar, "removing stale peer %pM from vdev_id %d\n",
740 741 742 743
			    peer->addr, vdev_id);

		list_del(&peer->list);
		kfree(peer);
744
		ar->num_peers--;
745 746 747 748
	}
	spin_unlock_bh(&ar->data_lock);
}

749 750 751 752 753 754 755 756 757 758 759 760
static void ath10k_peer_cleanup_all(struct ath10k *ar)
{
	struct ath10k_peer *peer, *tmp;

	lockdep_assert_held(&ar->conf_mutex);

	spin_lock_bh(&ar->data_lock);
	list_for_each_entry_safe(peer, tmp, &ar->peers, list) {
		list_del(&peer->list);
		kfree(peer);
	}
	spin_unlock_bh(&ar->data_lock);
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	ar->num_peers = 0;
763
	ar->num_stations = 0;
764 765
}

766 767 768 769 770 771 772 773 774 775 776 777 778 779 780 781 782 783 784 785 786 787 788 789 790 791 792 793 794 795 796 797
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;
}

798 799 800 801
/************************/
/* Interface management */
/************************/

802 803 804 805 806 807 808 809 810 811 812 813 814
void ath10k_mac_vif_beacon_free(struct ath10k_vif *arvif)
{
	struct ath10k *ar = arvif->ar;

	lockdep_assert_held(&ar->data_lock);

	if (!arvif->beacon)
		return;

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

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815 816 817 818
	if (WARN_ON(arvif->beacon_state != ATH10K_BEACON_SCHEDULED &&
		    arvif->beacon_state != ATH10K_BEACON_SENT))
		return;

819 820 821
	dev_kfree_skb_any(arvif->beacon);

	arvif->beacon = NULL;
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	arvif->beacon_state = ATH10K_BEACON_SCHEDULED;
823 824 825 826 827 828 829 830 831 832 833 834 835 836 837 838 839
}

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;
	}
}

840 841
static inline int ath10k_vdev_setup_sync(struct ath10k *ar)
{
842
	unsigned long time_left;
843

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844 845
	lockdep_assert_held(&ar->conf_mutex);

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846 847 848
	if (test_bit(ATH10K_FLAG_CRASH_FLUSH, &ar->dev_flags))
		return -ESHUTDOWN;

849 850 851
	time_left = wait_for_completion_timeout(&ar->vdev_setup_done,
						ATH10K_VDEV_SETUP_TIMEOUT_HZ);
	if (time_left == 0)
852 853 854 855 856
		return -ETIMEDOUT;

	return 0;
}

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857
static int ath10k_monitor_vdev_start(struct ath10k *ar, int vdev_id)
858
{
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859
	struct cfg80211_chan_def *chandef = NULL;
860
	struct ieee80211_channel *channel = NULL;
861 862 863 864 865
	struct wmi_vdev_start_request_arg arg = {};
	int ret = 0;

	lockdep_assert_held(&ar->conf_mutex);

M
Michal Kazior 已提交
866 867 868 869 870 871 872 873
	ieee80211_iter_chan_contexts_atomic(ar->hw,
					    ath10k_mac_get_any_chandef_iter,
					    &chandef);
	if (WARN_ON_ONCE(!chandef))
		return -ENOENT;

	channel = chandef->chan;

874 875
	arg.vdev_id = vdev_id;
	arg.channel.freq = channel->center_freq;
876
	arg.channel.band_center_freq1 = chandef->center_freq1;
877 878 879

	/* TODO setup this dynamically, what in case we
	   don't have any vifs? */
880
	arg.channel.mode = chan_to_phymode(chandef);
881 882
	arg.channel.chan_radar =
			!!(channel->flags & IEEE80211_CHAN_RADAR);
883

884
	arg.channel.min_power = 0;
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Michal Kazior 已提交
885 886 887
	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;
888

M
Michal Kazior 已提交
889 890
	reinit_completion(&ar->vdev_setup_done);

891 892
	ret = ath10k_wmi_vdev_start(ar, &arg);
	if (ret) {
893
		ath10k_warn(ar, "failed to request monitor vdev %i start: %d\n",
894
			    vdev_id, ret);
895 896 897 898 899
		return ret;
	}

	ret = ath10k_vdev_setup_sync(ar);
	if (ret) {
900
		ath10k_warn(ar, "failed to synchronize setup for monitor vdev %i start: %d\n",
901
			    vdev_id, ret);
902 903 904 905 906
		return ret;
	}

	ret = ath10k_wmi_vdev_up(ar, vdev_id, 0, ar->mac_addr);
	if (ret) {
907
		ath10k_warn(ar, "failed to put up monitor vdev %i: %d\n",
908
			    vdev_id, ret);
909 910 911 912 913
		goto vdev_stop;
	}

	ar->monitor_vdev_id = vdev_id;

914
	ath10k_dbg(ar, ATH10K_DBG_MAC, "mac monitor vdev %i started\n",
M
Michal Kazior 已提交
915
		   ar->monitor_vdev_id);
916 917 918 919 920
	return 0;

vdev_stop:
	ret = ath10k_wmi_vdev_stop(ar, ar->monitor_vdev_id);
	if (ret)
921
		ath10k_warn(ar, "failed to stop monitor vdev %i after start failure: %d\n",
922
			    ar->monitor_vdev_id, ret);
923 924 925 926

	return ret;
}

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Michal Kazior 已提交
927
static int ath10k_monitor_vdev_stop(struct ath10k *ar)
928 929 930 931 932
{
	int ret = 0;

	lockdep_assert_held(&ar->conf_mutex);

933 934
	ret = ath10k_wmi_vdev_down(ar, ar->monitor_vdev_id);
	if (ret)
935
		ath10k_warn(ar, "failed to put down monitor vdev %i: %d\n",
936
			    ar->monitor_vdev_id, ret);
937

M
Michal Kazior 已提交
938 939
	reinit_completion(&ar->vdev_setup_done);

940 941
	ret = ath10k_wmi_vdev_stop(ar, ar->monitor_vdev_id);
	if (ret)
942
		ath10k_warn(ar, "failed to to request monitor vdev %i stop: %d\n",
943
			    ar->monitor_vdev_id, ret);
944 945 946

	ret = ath10k_vdev_setup_sync(ar);
	if (ret)
947
		ath10k_warn(ar, "failed to synchronize monitor vdev %i stop: %d\n",
948
			    ar->monitor_vdev_id, ret);
949

950
	ath10k_dbg(ar, ATH10K_DBG_MAC, "mac monitor vdev %i stopped\n",
M
Michal Kazior 已提交
951
		   ar->monitor_vdev_id);
952 953 954
	return ret;
}

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955
static int ath10k_monitor_vdev_create(struct ath10k *ar)
956 957 958 959 960
{
	int bit, ret = 0;

	lockdep_assert_held(&ar->conf_mutex);

B
Ben Greear 已提交
961
	if (ar->free_vdev_map == 0) {
962
		ath10k_warn(ar, "failed to find free vdev id for monitor vdev\n");
963 964 965
		return -ENOMEM;
	}

B
Ben Greear 已提交
966
	bit = __ffs64(ar->free_vdev_map);
B
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967

B
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968
	ar->monitor_vdev_id = bit;
969 970 971 972 973

	ret = ath10k_wmi_vdev_create(ar, ar->monitor_vdev_id,
				     WMI_VDEV_TYPE_MONITOR,
				     0, ar->mac_addr);
	if (ret) {
974
		ath10k_warn(ar, "failed to request monitor vdev %i creation: %d\n",
975
			    ar->monitor_vdev_id, ret);
B
Ben Greear 已提交
976
		return ret;
977 978
	}

B
Ben Greear 已提交
979
	ar->free_vdev_map &= ~(1LL << ar->monitor_vdev_id);
980
	ath10k_dbg(ar, ATH10K_DBG_MAC, "mac monitor vdev %d created\n",
981 982 983 984 985
		   ar->monitor_vdev_id);

	return 0;
}

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Michal Kazior 已提交
986
static int ath10k_monitor_vdev_delete(struct ath10k *ar)
987 988 989 990 991 992 993
{
	int ret = 0;

	lockdep_assert_held(&ar->conf_mutex);

	ret = ath10k_wmi_vdev_delete(ar, ar->monitor_vdev_id);
	if (ret) {
994
		ath10k_warn(ar, "failed to request wmi monitor vdev %i removal: %d\n",
995
			    ar->monitor_vdev_id, ret);
996 997 998
		return ret;
	}

B
Ben Greear 已提交
999
	ar->free_vdev_map |= 1LL << ar->monitor_vdev_id;
1000

1001
	ath10k_dbg(ar, ATH10K_DBG_MAC, "mac monitor vdev %d deleted\n",
1002 1003 1004 1005
		   ar->monitor_vdev_id);
	return ret;
}

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Michal Kazior 已提交
1006 1007 1008 1009 1010 1011 1012 1013
static int ath10k_monitor_start(struct ath10k *ar)
{
	int ret;

	lockdep_assert_held(&ar->conf_mutex);

	ret = ath10k_monitor_vdev_create(ar);
	if (ret) {
1014
		ath10k_warn(ar, "failed to create monitor vdev: %d\n", ret);
M
Michal Kazior 已提交
1015 1016 1017 1018 1019
		return ret;
	}

	ret = ath10k_monitor_vdev_start(ar, ar->monitor_vdev_id);
	if (ret) {
1020
		ath10k_warn(ar, "failed to start monitor vdev: %d\n", ret);
M
Michal Kazior 已提交
1021 1022 1023 1024 1025
		ath10k_monitor_vdev_delete(ar);
		return ret;
	}

	ar->monitor_started = true;
1026
	ath10k_dbg(ar, ATH10K_DBG_MAC, "mac monitor started\n");
M
Michal Kazior 已提交
1027 1028 1029 1030

	return 0;
}

1031
static int ath10k_monitor_stop(struct ath10k *ar)
M
Michal Kazior 已提交
1032 1033 1034 1035 1036 1037
{
	int ret;

	lockdep_assert_held(&ar->conf_mutex);

	ret = ath10k_monitor_vdev_stop(ar);
1038
	if (ret) {
1039
		ath10k_warn(ar, "failed to stop monitor vdev: %d\n", ret);
1040 1041
		return ret;
	}
M
Michal Kazior 已提交
1042 1043

	ret = ath10k_monitor_vdev_delete(ar);
1044
	if (ret) {
1045
		ath10k_warn(ar, "failed to delete monitor vdev: %d\n", ret);
1046 1047
		return ret;
	}
M
Michal Kazior 已提交
1048 1049

	ar->monitor_started = false;
1050
	ath10k_dbg(ar, ATH10K_DBG_MAC, "mac monitor stopped\n");
1051 1052 1053 1054

	return 0;
}

M
Michal Kazior 已提交
1055 1056 1057 1058 1059 1060 1061 1062 1063 1064 1065 1066 1067 1068 1069 1070 1071 1072 1073 1074 1075 1076 1077 1078 1079 1080 1081 1082 1083 1084 1085 1086 1087 1088 1089 1090 1091
static bool ath10k_mac_monitor_vdev_is_needed(struct ath10k *ar)
{
	int num_ctx;

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

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

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

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

	num_ctx = ath10k_mac_num_chanctxs(ar);

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

	return true;
}

1092 1093
static int ath10k_monitor_recalc(struct ath10k *ar)
{
M
Michal Kazior 已提交
1094 1095 1096
	bool needed;
	bool allowed;
	int ret;
1097 1098 1099

	lockdep_assert_held(&ar->conf_mutex);

M
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1100 1101
	needed = ath10k_mac_monitor_vdev_is_needed(ar);
	allowed = ath10k_mac_monitor_vdev_is_allowed(ar);
1102 1103

	ath10k_dbg(ar, ATH10K_DBG_MAC,
M
Michal Kazior 已提交
1104 1105
		   "mac monitor recalc started? %d needed? %d allowed? %d\n",
		   ar->monitor_started, needed, allowed);
1106

M
Michal Kazior 已提交
1107 1108 1109 1110 1111 1112 1113 1114 1115
	if (WARN_ON(needed && !allowed)) {
		if (ar->monitor_started) {
			ath10k_dbg(ar, ATH10K_DBG_MAC, "mac monitor stopping disallowed monitor\n");

			ret = ath10k_monitor_stop(ar);
			if (ret)
				ath10k_warn(ar, "failed to stop disallowed monitor: %d\n", ret);
				/* not serious */
		}
1116

M
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1117 1118
		return -EPERM;
	}
1119

M
Michal Kazior 已提交
1120
	if (needed == ar->monitor_started)
1121 1122
		return 0;

M
Michal Kazior 已提交
1123
	if (needed)
1124
		return ath10k_monitor_start(ar);
M
Michal Kazior 已提交
1125 1126
	else
		return ath10k_monitor_stop(ar);
M
Michal Kazior 已提交
1127 1128
}

1129 1130 1131 1132 1133 1134 1135 1136 1137
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;

1138
	rts_cts |= SM(WMI_RTSCTS_ENABLED, WMI_RTSCTS_SET);
1139 1140 1141 1142

	if (arvif->num_legacy_stations > 0)
		rts_cts |= SM(WMI_RTSCTS_ACROSS_SW_RETRIES,
			      WMI_RTSCTS_PROFILE);
1143 1144 1145
	else
		rts_cts |= SM(WMI_RTSCTS_FOR_SECOND_RATESERIES,
			      WMI_RTSCTS_PROFILE);
1146 1147 1148 1149 1150

	return ath10k_wmi_vdev_set_param(ar, arvif->vdev_id, vdev_param,
					 rts_cts);
}

1151 1152 1153 1154 1155 1156 1157 1158
static int ath10k_start_cac(struct ath10k *ar)
{
	int ret;

	lockdep_assert_held(&ar->conf_mutex);

	set_bit(ATH10K_CAC_RUNNING, &ar->dev_flags);

1159
	ret = ath10k_monitor_recalc(ar);
1160
	if (ret) {
1161
		ath10k_warn(ar, "failed to start monitor (cac): %d\n", ret);
1162 1163 1164 1165
		clear_bit(ATH10K_CAC_RUNNING, &ar->dev_flags);
		return ret;
	}

1166
	ath10k_dbg(ar, ATH10K_DBG_MAC, "mac cac start monitor vdev %d\n",
1167 1168 1169 1170 1171 1172 1173 1174 1175 1176 1177 1178 1179 1180
		   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);
M
Michal Kazior 已提交
1181
	ath10k_monitor_stop(ar);
1182

1183
	ath10k_dbg(ar, ATH10K_DBG_MAC, "mac cac finished\n");
1184 1185 1186 1187

	return 0;
}

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1188 1189 1190 1191 1192 1193 1194 1195 1196 1197 1198 1199 1200 1201 1202 1203 1204 1205 1206 1207 1208
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;
}

1209
static void ath10k_recalc_radar_detection(struct ath10k *ar)
1210 1211 1212 1213 1214 1215 1216
{
	int ret;

	lockdep_assert_held(&ar->conf_mutex);

	ath10k_stop_cac(ar);

M
Michal Kazior 已提交
1217
	if (!ath10k_mac_has_radar_enabled(ar))
1218 1219
		return;

1220
	if (ar->num_started_vdevs > 0)
1221 1222 1223 1224 1225 1226 1227 1228 1229
		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.
		 */
1230
		ath10k_warn(ar, "failed to start CAC: %d\n", ret);
1231 1232 1233 1234
		ieee80211_radar_detected(ar->hw);
	}
}

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 1265 1266 1267
static int ath10k_vdev_stop(struct ath10k_vif *arvif)
{
	struct ath10k *ar = arvif->ar;
	int ret;

	lockdep_assert_held(&ar->conf_mutex);

	reinit_completion(&ar->vdev_setup_done);

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

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

	WARN_ON(ar->num_started_vdevs == 0);

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

	return ret;
}

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

	lockdep_assert_held(&ar->conf_mutex);

	reinit_completion(&ar->vdev_setup_done);

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

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

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

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

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

1306
	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));

1311 1312 1313 1314 1315
	if (restart)
		ret = ath10k_wmi_vdev_restart(ar, &arg);
	else
		ret = ath10k_wmi_vdev_start(ar, &arg);

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	if (ret) {
1317
		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) {
1324 1325 1326
		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;
	}

1330 1331 1332
	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)
1338
{
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	return ath10k_vdev_start_restart(arvif, def, false);
1340 1341
}

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

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

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

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

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

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

	return 0;
}

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

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

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

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

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

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

	return 0;
}

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

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

1422 1423 1424 1425
	if (arvif->vdev_type != WMI_VDEV_TYPE_AP &&
	    arvif->vdev_type != WMI_VDEV_TYPE_IBSS)
		return 0;

1426 1427 1428 1429 1430 1431 1432 1433 1434 1435 1436 1437 1438 1439 1440 1441 1442 1443 1444 1445 1446 1447 1448 1449 1450 1451 1452 1453 1454 1455 1456 1457 1458 1459 1460 1461 1462 1463 1464 1465 1466 1467 1468 1469 1470
	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;

1471 1472 1473
	if (arvif->vdev_type != WMI_VDEV_TYPE_AP)
		return 0;

1474 1475 1476 1477 1478 1479 1480 1481 1482 1483 1484 1485 1486 1487 1488 1489 1490 1491
	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;
}

1566
static void ath10k_control_beaconing(struct ath10k_vif *arvif,
1567
				     struct ieee80211_bss_conf *info)
1568
{
1569
	struct ath10k *ar = arvif->ar;
1570 1571
	int ret = 0;

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1572 1573
	lockdep_assert_held(&arvif->ar->conf_mutex);

1574
	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);
1579 1580 1581

		arvif->is_up = false;

1582
		spin_lock_bh(&arvif->ar->data_lock);
1583
		ath10k_mac_vif_beacon_free(arvif);
1584 1585
		spin_unlock_bh(&arvif->ar->data_lock);

1586 1587 1588 1589 1590
		return;
	}

	arvif->tx_seq_no = 0x1000;

1591
	arvif->aid = 0;
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	ether_addr_copy(arvif->bssid, info->bssid);
1593 1594 1595

	ret = ath10k_wmi_vdev_up(arvif->ar, arvif->vdev_id, arvif->aid,
				 arvif->bssid);
1596
	if (ret) {
1597
		ath10k_warn(ar, "failed to bring up vdev %d: %i\n",
1598
			    arvif->vdev_id, ret);
1599 1600
		return;
	}
1601 1602 1603

	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;
	}

1611
	ath10k_dbg(ar, ATH10K_DBG_MAC, "mac vdev %d up\n", arvif->vdev_id);
1612 1613 1614 1615 1616 1617
}

static void ath10k_control_ibss(struct ath10k_vif *arvif,
				struct ieee80211_bss_conf *info,
				const u8 self_peer[ETH_ALEN])
{
1618
	struct ath10k *ar = arvif->ar;
1619
	u32 vdev_param;
1620 1621
	int ret = 0;

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

1624
	if (!info->ibss_joined) {
1625
		if (is_zero_ether_addr(arvif->bssid))
1626 1627
			return;

1628
		eth_zero_addr(arvif->bssid);
1629 1630 1631 1632

		return;
	}

1633 1634
	vdev_param = arvif->ar->wmi.vdev_param->atim_window;
	ret = ath10k_wmi_vdev_set_param(arvif->ar, arvif->vdev_id, vdev_param,
1635 1636
					ATH10K_DEFAULT_ATIM);
	if (ret)
1637
		ath10k_warn(ar, "failed to set IBSS ATIM for vdev %d: %d\n",
1638 1639 1640
			    arvif->vdev_id, ret);
}

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

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

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

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

	return 0;
}

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

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

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

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

	return 0;
}

1692
static int ath10k_mac_num_vifs_started(struct ath10k *ar)
1693 1694 1695 1696 1697 1698 1699
{
	struct ath10k_vif *arvif;
	int num = 0;

	lockdep_assert_held(&ar->conf_mutex);

	list_for_each_entry(arvif, &ar->arvifs, list)
1700
		if (arvif->is_started)
1701 1702 1703 1704 1705
			num++;

	return num;
}

1706
static int ath10k_mac_vif_setup_ps(struct ath10k_vif *arvif)
1707
{
1708
	struct ath10k *ar = arvif->ar;
1709
	struct ieee80211_vif *vif = arvif->vif;
1710
	struct ieee80211_conf *conf = &ar->hw->conf;
1711 1712 1713
	enum wmi_sta_powersave_param param;
	enum wmi_sta_ps_mode psmode;
	int ret;
1714
	int ps_timeout;
1715
	bool enable_ps;
1716

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

1719 1720
	if (arvif->vif->type != NL80211_IFTYPE_STATION)
		return 0;
1721

1722 1723
	enable_ps = arvif->ps;

1724
	if (enable_ps && ath10k_mac_num_vifs_started(ar) > 1 &&
1725 1726 1727 1728 1729 1730 1731
	    !test_bit(ATH10K_FW_FEATURE_MULTI_VIF_PS_SUPPORT,
		      ar->fw_features)) {
		ath10k_warn(ar, "refusing to enable ps on vdev %i: not supported by fw\n",
			    arvif->vdev_id);
		enable_ps = false;
	}

1732 1733 1734 1735 1736 1737 1738 1739
	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) {
1740 1741 1742
		psmode = WMI_STA_PS_MODE_ENABLED;
		param = WMI_STA_PS_PARAM_INACTIVITY_TIME;

1743 1744 1745 1746 1747 1748 1749
		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;
		}

1750
		ret = ath10k_wmi_set_sta_ps_param(ar, arvif->vdev_id, param,
1751
						  ps_timeout);
1752
		if (ret) {
1753
			ath10k_warn(ar, "failed to set inactivity time for vdev %d: %i\n",
1754
				    arvif->vdev_id, ret);
1755
			return ret;
1756 1757 1758 1759 1760
		}
	} else {
		psmode = WMI_STA_PS_MODE_DISABLED;
	}

1761
	ath10k_dbg(ar, ATH10K_DBG_MAC, "mac vdev %d psmode %s\n",
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		   arvif->vdev_id, psmode ? "enable" : "disable");

1764 1765
	ret = ath10k_wmi_set_psmode(ar, arvif->vdev_id, psmode);
	if (ret) {
1766
		ath10k_warn(ar, "failed to set PS Mode %d for vdev %d: %d\n",
1767
			    psmode, arvif->vdev_id, ret);
1768 1769 1770 1771
		return ret;
	}

	return 0;
1772 1773
}

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

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

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

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

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

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

	return 0;
}

1806 1807 1808 1809 1810 1811
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;

1812 1813 1814 1815 1816
	lockdep_assert_held(&arvif->ar->conf_mutex);

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

1817 1818 1819 1820 1821 1822 1823 1824 1825 1826 1827 1828 1829 1830 1831 1832 1833 1834 1835 1836 1837 1838 1839 1840 1841 1842 1843 1844 1845 1846 1847 1848 1849 1850 1851 1852 1853
	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);
}

1854 1855 1856 1857 1858 1859 1860 1861 1862 1863 1864 1865 1866 1867 1868 1869 1870 1871 1872 1873 1874 1875 1876 1877 1878 1879 1880 1881 1882 1883 1884 1885 1886 1887 1888 1889 1890 1891 1892 1893 1894 1895 1896 1897 1898 1899 1900 1901 1902 1903 1904 1905 1906 1907 1908 1909 1910 1911 1912 1913 1914 1915 1916 1917 1918 1919 1920 1921 1922
static void ath10k_mac_handle_beacon_iter(void *data, u8 *mac,
					  struct ieee80211_vif *vif)
{
	struct sk_buff *skb = data;
	struct ieee80211_mgmt *mgmt = (void *)skb->data;
	struct ath10k_vif *arvif = ath10k_vif_to_arvif(vif);

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

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

	cancel_delayed_work(&arvif->connection_loss_work);
}

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

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

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

	if (!arvif->is_up)
		return;

	ieee80211_beacon_loss(vif);

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

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

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

	if (!arvif->is_up)
		return;

	ieee80211_connection_loss(vif);
}

1923 1924 1925 1926
/**********************/
/* Station management */
/**********************/

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Michal Kazior 已提交
1927 1928 1929 1930 1931 1932 1933 1934 1935 1936 1937 1938 1939 1940 1941 1942 1943
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;
}

1944
static void ath10k_peer_assoc_h_basic(struct ath10k *ar,
M
Michal Kazior 已提交
1945
				      struct ieee80211_vif *vif,
1946 1947 1948
				      struct ieee80211_sta *sta,
				      struct wmi_peer_assoc_complete_arg *arg)
{
M
Michal Kazior 已提交
1949
	struct ath10k_vif *arvif = ath10k_vif_to_arvif(vif);
1950
	u32 aid;
M
Michal Kazior 已提交
1951

M
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1952 1953
	lockdep_assert_held(&ar->conf_mutex);

1954 1955 1956 1957 1958
	if (vif->type == NL80211_IFTYPE_STATION)
		aid = vif->bss_conf.aid;
	else
		aid = sta->aid;

K
Kalle Valo 已提交
1959
	ether_addr_copy(arg->addr, sta->addr);
1960
	arg->vdev_id = arvif->vdev_id;
1961
	arg->peer_aid = aid;
1962
	arg->peer_flags |= WMI_PEER_AUTH;
M
Michal Kazior 已提交
1963
	arg->peer_listen_intval = ath10k_peer_assoc_h_listen_intval(ar, vif);
1964
	arg->peer_num_spatial_streams = 1;
M
Michal Kazior 已提交
1965
	arg->peer_caps = vif->bss_conf.assoc_capability;
1966 1967 1968
}

static void ath10k_peer_assoc_h_crypto(struct ath10k *ar,
M
Michal Kazior 已提交
1969
				       struct ieee80211_vif *vif,
1970 1971 1972
				       struct wmi_peer_assoc_complete_arg *arg)
{
	struct ieee80211_bss_conf *info = &vif->bss_conf;
M
Michal Kazior 已提交
1973
	struct cfg80211_chan_def def;
1974 1975 1976 1977
	struct cfg80211_bss *bss;
	const u8 *rsnie = NULL;
	const u8 *wpaie = NULL;

M
Michal Kazior 已提交
1978 1979
	lockdep_assert_held(&ar->conf_mutex);

M
Michal Kazior 已提交
1980 1981 1982 1983 1984
	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);
1985 1986 1987 1988 1989 1990 1991 1992 1993
	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,
1994 1995 1996
						WLAN_OUI_TYPE_MICROSOFT_WPA,
						ies->data,
						ies->len);
1997 1998 1999 2000 2001 2002
		rcu_read_unlock();
		cfg80211_put_bss(ar->hw->wiphy, bss);
	}

	/* FIXME: base on RSN IE/WPA IE is a correct idea? */
	if (rsnie || wpaie) {
2003
		ath10k_dbg(ar, ATH10K_DBG_WMI, "%s: rsn ie found\n", __func__);
2004 2005 2006 2007
		arg->peer_flags |= WMI_PEER_NEED_PTK_4_WAY;
	}

	if (wpaie) {
2008
		ath10k_dbg(ar, ATH10K_DBG_WMI, "%s: wpa ie found\n", __func__);
2009 2010 2011 2012 2013
		arg->peer_flags |= WMI_PEER_NEED_GTK_2_WAY;
	}
}

static void ath10k_peer_assoc_h_rates(struct ath10k *ar,
M
Michal Kazior 已提交
2014
				      struct ieee80211_vif *vif,
2015 2016 2017
				      struct ieee80211_sta *sta,
				      struct wmi_peer_assoc_complete_arg *arg)
{
2018
	struct ath10k_vif *arvif = ath10k_vif_to_arvif(vif);
2019
	struct wmi_rate_set_arg *rateset = &arg->peer_legacy_rates;
M
Michal Kazior 已提交
2020
	struct cfg80211_chan_def def;
2021 2022
	const struct ieee80211_supported_band *sband;
	const struct ieee80211_rate *rates;
2023
	enum ieee80211_band band;
2024
	u32 ratemask;
M
Michal Kazior 已提交
2025
	u8 rate;
2026 2027
	int i;

M
Michal Kazior 已提交
2028 2029
	lockdep_assert_held(&ar->conf_mutex);

M
Michal Kazior 已提交
2030 2031 2032
	if (WARN_ON(ath10k_mac_vif_chan(vif, &def)))
		return;

2033 2034 2035 2036
	band = def.chan->band;
	sband = ar->hw->wiphy->bands[band];
	ratemask = sta->supp_rates[band];
	ratemask &= arvif->bitrate_mask.control[band].legacy;
2037 2038 2039 2040 2041 2042 2043 2044
	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
2045 2046
		rate = ath10k_mac_bitrate_to_rate(rates->bitrate);
		rateset->rates[rateset->num_rates] = rate;
2047 2048 2049 2050
		rateset->num_rates++;
	}
}

2051 2052 2053 2054 2055 2056 2057 2058 2059 2060 2061 2062 2063 2064 2065 2066 2067 2068 2069 2070 2071 2072 2073 2074
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;
}

2075
static void ath10k_peer_assoc_h_ht(struct ath10k *ar,
2076
				   struct ieee80211_vif *vif,
2077 2078 2079 2080
				   struct ieee80211_sta *sta,
				   struct wmi_peer_assoc_complete_arg *arg)
{
	const struct ieee80211_sta_ht_cap *ht_cap = &sta->ht_cap;
2081 2082 2083 2084 2085 2086
	struct ath10k_vif *arvif = ath10k_vif_to_arvif(vif);
	struct cfg80211_chan_def def;
	enum ieee80211_band band;
	const u8 *ht_mcs_mask;
	const u16 *vht_mcs_mask;
	int i, n, max_nss;
2087
	u32 stbc;
2088

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

2091 2092 2093
	if (WARN_ON(ath10k_mac_vif_chan(vif, &def)))
		return;

2094 2095 2096
	if (!ht_cap->ht_supported)
		return;

2097 2098 2099 2100 2101 2102 2103 2104
	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;

2105 2106 2107 2108 2109 2110 2111 2112 2113 2114 2115 2116 2117 2118 2119 2120 2121 2122
	arg->peer_flags |= WMI_PEER_HT;
	arg->peer_max_mpdu = (1 << (IEEE80211_HT_MAX_AMPDU_FACTOR +
				    ht_cap->ampdu_factor)) - 1;

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

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

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

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

2123 2124 2125
	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;
2126

2127 2128 2129
		if (ht_cap->cap & IEEE80211_HT_CAP_SGI_40)
			arg->peer_rate_caps |= WMI_RC_SGI_FLAG;
	}
2130 2131 2132 2133 2134 2135 2136 2137 2138 2139 2140 2141 2142 2143 2144 2145 2146 2147 2148

	if (ht_cap->cap & IEEE80211_HT_CAP_TX_STBC) {
		arg->peer_rate_caps |= WMI_RC_TX_STBC_FLAG;
		arg->peer_flags |= WMI_PEER_STBC;
	}

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

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

2149 2150 2151 2152
	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;
2153
			arg->peer_ht_rates.rates[n++] = i;
2154
		}
2155

2156 2157 2158 2159 2160 2161 2162 2163 2164 2165 2166 2167 2168 2169 2170
	/*
	 * 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;
2171
		arg->peer_num_spatial_streams = max_nss;
2172
	}
2173

2174
	ath10k_dbg(ar, ATH10K_DBG_MAC, "mac ht peer %pM mcs cnt %d nss %d\n",
K
Kalle Valo 已提交
2175
		   arg->addr,
2176 2177 2178 2179
		   arg->peer_ht_rates.num_rates,
		   arg->peer_num_spatial_streams);
}

2180 2181 2182
static int ath10k_peer_assoc_qos_ap(struct ath10k *ar,
				    struct ath10k_vif *arvif,
				    struct ieee80211_sta *sta)
2183 2184 2185
{
	u32 uapsd = 0;
	u32 max_sp = 0;
2186
	int ret = 0;
2187

M
Michal Kazior 已提交
2188 2189
	lockdep_assert_held(&ar->conf_mutex);

2190
	if (sta->wme && sta->uapsd_queues) {
2191
		ath10k_dbg(ar, ATH10K_DBG_MAC, "mac uapsd_queues 0x%x max_sp %d\n",
2192 2193 2194 2195 2196 2197 2198 2199 2200 2201 2202 2203 2204 2205 2206 2207 2208 2209
			   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;

2210 2211 2212 2213 2214
		ret = ath10k_wmi_set_ap_ps_param(ar, arvif->vdev_id,
						 sta->addr,
						 WMI_AP_PS_PEER_PARAM_UAPSD,
						 uapsd);
		if (ret) {
2215
			ath10k_warn(ar, "failed to set ap ps peer param uapsd for vdev %i: %d\n",
2216
				    arvif->vdev_id, ret);
2217 2218
			return ret;
		}
2219

2220 2221 2222 2223 2224
		ret = ath10k_wmi_set_ap_ps_param(ar, arvif->vdev_id,
						 sta->addr,
						 WMI_AP_PS_PEER_PARAM_MAX_SP,
						 max_sp);
		if (ret) {
2225
			ath10k_warn(ar, "failed to set ap ps peer param max sp for vdev %i: %d\n",
2226
				    arvif->vdev_id, ret);
2227 2228
			return ret;
		}
2229 2230 2231 2232 2233

		/* 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 */
2234
		ret = ath10k_wmi_set_ap_ps_param(ar, arvif->vdev_id, sta->addr,
2235 2236
						 WMI_AP_PS_PEER_PARAM_AGEOUT_TIME,
						 10);
2237
		if (ret) {
2238
			ath10k_warn(ar, "failed to set ap ps peer param ageout time for vdev %i: %d\n",
2239
				    arvif->vdev_id, ret);
2240 2241
			return ret;
		}
2242 2243
	}

2244
	return 0;
2245 2246
}

2247 2248 2249 2250 2251 2252 2253 2254 2255 2256 2257 2258 2259 2260 2261 2262 2263 2264 2265 2266 2267 2268 2269 2270 2271 2272 2273 2274 2275 2276 2277 2278 2279 2280 2281 2282 2283 2284 2285 2286 2287 2288 2289 2290 2291 2292 2293 2294 2295 2296 2297
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;
}

2298
static void ath10k_peer_assoc_h_vht(struct ath10k *ar,
M
Michal Kazior 已提交
2299
				    struct ieee80211_vif *vif,
2300 2301 2302 2303
				    struct ieee80211_sta *sta,
				    struct wmi_peer_assoc_complete_arg *arg)
{
	const struct ieee80211_sta_vht_cap *vht_cap = &sta->vht_cap;
2304
	struct ath10k_vif *arvif = ath10k_vif_to_arvif(vif);
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Michal Kazior 已提交
2305
	struct cfg80211_chan_def def;
2306 2307
	enum ieee80211_band band;
	const u16 *vht_mcs_mask;
2308
	u8 ampdu_factor;
2309

M
Michal Kazior 已提交
2310 2311 2312
	if (WARN_ON(ath10k_mac_vif_chan(vif, &def)))
		return;

2313 2314 2315
	if (!vht_cap->vht_supported)
		return;

2316 2317 2318 2319 2320 2321
	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;

2322
	arg->peer_flags |= WMI_PEER_VHT;
2323

M
Michal Kazior 已提交
2324
	if (def.chan->band == IEEE80211_BAND_2GHZ)
2325 2326
		arg->peer_flags |= WMI_PEER_VHT_2G;

2327 2328
	arg->peer_vht_caps = vht_cap->cap;

2329 2330 2331 2332 2333 2334 2335 2336 2337 2338 2339 2340
	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);

2341 2342 2343 2344 2345 2346 2347 2348 2349
	if (sta->bandwidth == IEEE80211_STA_RX_BW_80)
		arg->peer_flags |= WMI_PEER_80MHZ;

	arg->peer_vht_rates.rx_max_rate =
		__le16_to_cpu(vht_cap->vht_mcs.rx_highest);
	arg->peer_vht_rates.rx_mcs_set =
		__le16_to_cpu(vht_cap->vht_mcs.rx_mcs_map);
	arg->peer_vht_rates.tx_max_rate =
		__le16_to_cpu(vht_cap->vht_mcs.tx_highest);
2350 2351
	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);
2352

2353
	ath10k_dbg(ar, ATH10K_DBG_MAC, "mac vht peer %pM max_mpdu %d flags 0x%x\n",
K
Kalle Valo 已提交
2354
		   sta->addr, arg->peer_max_mpdu, arg->peer_flags);
2355 2356 2357
}

static void ath10k_peer_assoc_h_qos(struct ath10k *ar,
M
Michal Kazior 已提交
2358
				    struct ieee80211_vif *vif,
2359 2360 2361
				    struct ieee80211_sta *sta,
				    struct wmi_peer_assoc_complete_arg *arg)
{
M
Michal Kazior 已提交
2362 2363
	struct ath10k_vif *arvif = ath10k_vif_to_arvif(vif);

2364 2365
	switch (arvif->vdev_type) {
	case WMI_VDEV_TYPE_AP:
2366 2367 2368 2369 2370 2371 2372
		if (sta->wme)
			arg->peer_flags |= WMI_PEER_QOS;

		if (sta->wme && sta->uapsd_queues) {
			arg->peer_flags |= WMI_PEER_APSD;
			arg->peer_rate_caps |= WMI_RC_UAPSD_FLAG;
		}
2373 2374
		break;
	case WMI_VDEV_TYPE_STA:
M
Michal Kazior 已提交
2375
		if (vif->bss_conf.qos)
2376
			arg->peer_flags |= WMI_PEER_QOS;
2377
		break;
2378 2379 2380 2381
	case WMI_VDEV_TYPE_IBSS:
		if (sta->wme)
			arg->peer_flags |= WMI_PEER_QOS;
		break;
2382 2383 2384
	default:
		break;
	}
2385 2386 2387

	ath10k_dbg(ar, ATH10K_DBG_MAC, "mac peer %pM qos %d\n",
		   sta->addr, !!(arg->peer_flags & WMI_PEER_QOS));
2388 2389
}

2390
static bool ath10k_mac_sta_has_ofdm_only(struct ieee80211_sta *sta)
M
Michal Kazior 已提交
2391
{
2392 2393
	return sta->supp_rates[IEEE80211_BAND_2GHZ] >>
	       ATH10K_MAC_FIRST_OFDM_RATE_IDX;
M
Michal Kazior 已提交
2394 2395
}

2396
static void ath10k_peer_assoc_h_phymode(struct ath10k *ar,
M
Michal Kazior 已提交
2397
					struct ieee80211_vif *vif,
2398 2399 2400
					struct ieee80211_sta *sta,
					struct wmi_peer_assoc_complete_arg *arg)
{
2401
	struct ath10k_vif *arvif = ath10k_vif_to_arvif(vif);
M
Michal Kazior 已提交
2402
	struct cfg80211_chan_def def;
2403 2404 2405
	enum ieee80211_band band;
	const u8 *ht_mcs_mask;
	const u16 *vht_mcs_mask;
2406 2407
	enum wmi_phy_mode phymode = MODE_UNKNOWN;

M
Michal Kazior 已提交
2408 2409 2410
	if (WARN_ON(ath10k_mac_vif_chan(vif, &def)))
		return;

2411 2412 2413 2414 2415
	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) {
2416
	case IEEE80211_BAND_2GHZ:
2417 2418
		if (sta->vht_cap.vht_supported &&
		    !ath10k_peer_assoc_h_vht_masked(vht_mcs_mask)) {
2419 2420 2421 2422
			if (sta->bandwidth == IEEE80211_STA_RX_BW_40)
				phymode = MODE_11AC_VHT40;
			else
				phymode = MODE_11AC_VHT20;
2423 2424
		} else if (sta->ht_cap.ht_supported &&
			   !ath10k_peer_assoc_h_ht_masked(ht_mcs_mask)) {
2425 2426 2427 2428
			if (sta->bandwidth == IEEE80211_STA_RX_BW_40)
				phymode = MODE_11NG_HT40;
			else
				phymode = MODE_11NG_HT20;
2429
		} else if (ath10k_mac_sta_has_ofdm_only(sta)) {
2430
			phymode = MODE_11G;
M
Michal Kazior 已提交
2431 2432
		} else {
			phymode = MODE_11B;
2433 2434 2435 2436
		}

		break;
	case IEEE80211_BAND_5GHZ:
2437 2438 2439
		/*
		 * Check VHT first.
		 */
2440 2441
		if (sta->vht_cap.vht_supported &&
		    !ath10k_peer_assoc_h_vht_masked(vht_mcs_mask)) {
2442 2443 2444 2445 2446 2447
			if (sta->bandwidth == IEEE80211_STA_RX_BW_80)
				phymode = MODE_11AC_VHT80;
			else if (sta->bandwidth == IEEE80211_STA_RX_BW_40)
				phymode = MODE_11AC_VHT40;
			else if (sta->bandwidth == IEEE80211_STA_RX_BW_20)
				phymode = MODE_11AC_VHT20;
2448 2449 2450
		} else if (sta->ht_cap.ht_supported &&
			   !ath10k_peer_assoc_h_ht_masked(ht_mcs_mask)) {
			if (sta->bandwidth >= IEEE80211_STA_RX_BW_40)
2451 2452 2453 2454 2455 2456 2457 2458 2459 2460 2461 2462
				phymode = MODE_11NA_HT40;
			else
				phymode = MODE_11NA_HT20;
		} else {
			phymode = MODE_11A;
		}

		break;
	default:
		break;
	}

2463
	ath10k_dbg(ar, ATH10K_DBG_MAC, "mac peer %pM phymode %s\n",
K
Kalle Valo 已提交
2464
		   sta->addr, ath10k_wmi_phymode_str(phymode));
K
Kalle Valo 已提交
2465

2466 2467 2468 2469
	arg->peer_phymode = phymode;
	WARN_ON(phymode == MODE_UNKNOWN);
}

2470
static int ath10k_peer_assoc_prepare(struct ath10k *ar,
M
Michal Kazior 已提交
2471
				     struct ieee80211_vif *vif,
2472 2473
				     struct ieee80211_sta *sta,
				     struct wmi_peer_assoc_complete_arg *arg)
2474
{
M
Michal Kazior 已提交
2475 2476
	lockdep_assert_held(&ar->conf_mutex);

2477
	memset(arg, 0, sizeof(*arg));
2478

M
Michal Kazior 已提交
2479 2480
	ath10k_peer_assoc_h_basic(ar, vif, sta, arg);
	ath10k_peer_assoc_h_crypto(ar, vif, arg);
M
Michal Kazior 已提交
2481
	ath10k_peer_assoc_h_rates(ar, vif, sta, arg);
2482
	ath10k_peer_assoc_h_ht(ar, vif, sta, arg);
M
Michal Kazior 已提交
2483
	ath10k_peer_assoc_h_vht(ar, vif, sta, arg);
M
Michal Kazior 已提交
2484 2485
	ath10k_peer_assoc_h_qos(ar, vif, sta, arg);
	ath10k_peer_assoc_h_phymode(ar, vif, sta, arg);
2486

2487
	return 0;
2488 2489
}

M
Michal Kazior 已提交
2490 2491 2492 2493 2494 2495 2496 2497 2498 2499 2500 2501 2502 2503 2504 2505 2506 2507 2508 2509 2510 2511 2512 2513 2514 2515 2516
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
2517 2518 2519 2520 2521 2522 2523 2524 2525
static int ath10k_mac_vif_recalc_txbf(struct ath10k *ar,
				      struct ieee80211_vif *vif,
				      struct ieee80211_sta_vht_cap vht_cap)
{
	struct ath10k_vif *arvif = ath10k_vif_to_arvif(vif);
	int ret;
	u32 param;
	u32 value;

2526 2527 2528
	if (ath10k_wmi_get_txbf_conf_scheme(ar) != WMI_TXBF_CONF_AFTER_ASSOC)
		return 0;

M
Michal Kazior 已提交
2529 2530 2531 2532 2533 2534 2535 2536 2537 2538 2539 2540 2541 2542 2543 2544 2545 2546 2547 2548 2549 2550 2551 2552 2553 2554 2555 2556 2557 2558 2559 2560 2561 2562 2563 2564 2565 2566 2567 2568 2569 2570 2571 2572 2573 2574 2575 2576 2577 2578 2579 2580 2581
	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;
}

2582 2583 2584 2585 2586 2587 2588
/* can be called only in mac80211 callbacks due to `key_count` usage */
static void ath10k_bss_assoc(struct ieee80211_hw *hw,
			     struct ieee80211_vif *vif,
			     struct ieee80211_bss_conf *bss_conf)
{
	struct ath10k *ar = hw->priv;
	struct ath10k_vif *arvif = ath10k_vif_to_arvif(vif);
M
Michal Kazior 已提交
2589
	struct ieee80211_sta_ht_cap ht_cap;
M
Michal Kazior 已提交
2590
	struct ieee80211_sta_vht_cap vht_cap;
2591
	struct wmi_peer_assoc_complete_arg peer_arg;
2592 2593 2594
	struct ieee80211_sta *ap_sta;
	int ret;

M
Michal Kazior 已提交
2595 2596
	lockdep_assert_held(&ar->conf_mutex);

2597 2598 2599
	ath10k_dbg(ar, ATH10K_DBG_MAC, "mac vdev %i assoc bssid %pM aid %d\n",
		   arvif->vdev_id, arvif->bssid, arvif->aid);

2600 2601 2602 2603
	rcu_read_lock();

	ap_sta = ieee80211_find_sta(vif, bss_conf->bssid);
	if (!ap_sta) {
2604
		ath10k_warn(ar, "failed to find station entry for bss %pM vdev %i\n",
2605
			    bss_conf->bssid, arvif->vdev_id);
2606 2607 2608 2609
		rcu_read_unlock();
		return;
	}

M
Michal Kazior 已提交
2610 2611 2612
	/* 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
2613
	vht_cap = ap_sta->vht_cap;
M
Michal Kazior 已提交
2614

M
Michal Kazior 已提交
2615
	ret = ath10k_peer_assoc_prepare(ar, vif, ap_sta, &peer_arg);
2616
	if (ret) {
2617
		ath10k_warn(ar, "failed to prepare peer assoc for %pM vdev %i: %d\n",
2618
			    bss_conf->bssid, arvif->vdev_id, ret);
2619 2620 2621 2622 2623 2624
		rcu_read_unlock();
		return;
	}

	rcu_read_unlock();

2625 2626
	ret = ath10k_wmi_peer_assoc(ar, &peer_arg);
	if (ret) {
2627
		ath10k_warn(ar, "failed to run peer assoc for %pM vdev %i: %d\n",
2628
			    bss_conf->bssid, arvif->vdev_id, ret);
2629 2630 2631
		return;
	}

M
Michal Kazior 已提交
2632 2633
	ret = ath10k_setup_peer_smps(ar, arvif, bss_conf->bssid, &ht_cap);
	if (ret) {
2634
		ath10k_warn(ar, "failed to setup peer SMPS for vdev %i: %d\n",
2635
			    arvif->vdev_id, ret);
M
Michal Kazior 已提交
2636 2637 2638
		return;
	}

M
Michal Kazior 已提交
2639 2640 2641 2642 2643 2644 2645
	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;
	}

2646
	ath10k_dbg(ar, ATH10K_DBG_MAC,
K
Kalle Valo 已提交
2647 2648 2649
		   "mac vdev %d up (associated) bssid %pM aid %d\n",
		   arvif->vdev_id, bss_conf->bssid, bss_conf->aid);

2650 2651
	WARN_ON(arvif->is_up);

2652
	arvif->aid = bss_conf->aid;
K
Kalle Valo 已提交
2653
	ether_addr_copy(arvif->bssid, bss_conf->bssid);
2654 2655 2656

	ret = ath10k_wmi_vdev_up(ar, arvif->vdev_id, arvif->aid, arvif->bssid);
	if (ret) {
2657
		ath10k_warn(ar, "failed to set vdev %d up: %d\n",
2658
			    arvif->vdev_id, ret);
2659 2660 2661 2662
		return;
	}

	arvif->is_up = true;
2663 2664 2665 2666 2667 2668 2669 2670 2671 2672 2673 2674

	/* 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;
	}
2675 2676 2677 2678 2679 2680 2681
}

static void ath10k_bss_disassoc(struct ieee80211_hw *hw,
				struct ieee80211_vif *vif)
{
	struct ath10k *ar = hw->priv;
	struct ath10k_vif *arvif = ath10k_vif_to_arvif(vif);
M
Michal Kazior 已提交
2682
	struct ieee80211_sta_vht_cap vht_cap = {};
2683 2684
	int ret;

M
Michal Kazior 已提交
2685 2686
	lockdep_assert_held(&ar->conf_mutex);

2687 2688
	ath10k_dbg(ar, ATH10K_DBG_MAC, "mac vdev %i disassoc bssid %pM\n",
		   arvif->vdev_id, arvif->bssid);
K
Kalle Valo 已提交
2689

2690
	ret = ath10k_wmi_vdev_down(ar, arvif->vdev_id);
2691 2692 2693
	if (ret)
		ath10k_warn(ar, "faield to down vdev %i: %d\n",
			    arvif->vdev_id, ret);
2694

2695 2696
	arvif->def_wep_key_idx = -1;

M
Michal Kazior 已提交
2697 2698 2699 2700 2701 2702 2703
	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;
	}

2704
	arvif->is_up = false;
2705 2706

	cancel_delayed_work_sync(&arvif->connection_loss_work);
2707 2708
}

M
Michal Kazior 已提交
2709 2710 2711 2712
static int ath10k_station_assoc(struct ath10k *ar,
				struct ieee80211_vif *vif,
				struct ieee80211_sta *sta,
				bool reassoc)
2713
{
M
Michal Kazior 已提交
2714
	struct ath10k_vif *arvif = ath10k_vif_to_arvif(vif);
2715
	struct wmi_peer_assoc_complete_arg peer_arg;
2716 2717
	int ret = 0;

M
Michal Kazior 已提交
2718 2719
	lockdep_assert_held(&ar->conf_mutex);

M
Michal Kazior 已提交
2720
	ret = ath10k_peer_assoc_prepare(ar, vif, sta, &peer_arg);
2721
	if (ret) {
2722
		ath10k_warn(ar, "failed to prepare WMI peer assoc for %pM vdev %i: %i\n",
2723
			    sta->addr, arvif->vdev_id, ret);
2724 2725 2726 2727
		return ret;
	}

	ret = ath10k_wmi_peer_assoc(ar, &peer_arg);
2728
	if (ret) {
2729
		ath10k_warn(ar, "failed to run peer assoc for STA %pM vdev %i: %d\n",
2730
			    sta->addr, arvif->vdev_id, ret);
2731 2732 2733
		return ret;
	}

2734 2735 2736 2737 2738 2739
	/* 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);
2740
		if (ret) {
2741
			ath10k_warn(ar, "failed to setup peer SMPS for vdev %d: %d\n",
2742 2743 2744 2745
				    arvif->vdev_id, ret);
			return ret;
		}

2746 2747 2748 2749 2750 2751
		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;
		}
2752

2753 2754 2755 2756 2757 2758 2759 2760 2761 2762
		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;
			}
		}

2763 2764 2765 2766 2767 2768 2769 2770
		/* 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;
			}
2771
		}
2772 2773
	}

2774 2775 2776
	return ret;
}

M
Michal Kazior 已提交
2777 2778
static int ath10k_station_disassoc(struct ath10k *ar,
				   struct ieee80211_vif *vif,
2779 2780
				   struct ieee80211_sta *sta)
{
M
Michal Kazior 已提交
2781
	struct ath10k_vif *arvif = ath10k_vif_to_arvif(vif);
2782 2783
	int ret = 0;

M
Michal Kazior 已提交
2784 2785
	lockdep_assert_held(&ar->conf_mutex);

2786 2787 2788 2789
	if (!sta->wme) {
		arvif->num_legacy_stations--;
		ret = ath10k_recalc_rtscts_prot(arvif);
		if (ret) {
2790
			ath10k_warn(ar, "failed to recalculate rts/cts prot for vdev %d: %d\n",
2791 2792 2793 2794 2795
				    arvif->vdev_id, ret);
			return ret;
		}
	}

2796 2797
	ret = ath10k_clear_peer_keys(arvif, sta->addr);
	if (ret) {
2798
		ath10k_warn(ar, "failed to clear all peer wep keys for vdev %i: %d\n",
2799
			    arvif->vdev_id, ret);
2800 2801 2802 2803 2804 2805 2806 2807 2808 2809 2810 2811 2812 2813 2814 2815 2816 2817 2818 2819 2820 2821 2822
		return ret;
	}

	return ret;
}

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

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

M
Michal Kazior 已提交
2823 2824
	lockdep_assert_held(&ar->conf_mutex);

2825 2826 2827 2828 2829 2830 2831 2832 2833 2834 2835 2836 2837 2838 2839 2840 2841 2842 2843 2844 2845 2846 2847 2848 2849 2850 2851 2852 2853 2854 2855 2856 2857 2858 2859 2860
	bands = hw->wiphy->bands;
	for (band = 0; band < IEEE80211_NUM_BANDS; band++) {
		if (!bands[band])
			continue;

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

			arg.n_channels++;
		}
	}

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

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

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

			if (channel->flags & IEEE80211_CHAN_DISABLED)
				continue;

			ch->allow_ht   = true;

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

			ch->allow_ibss =
2861
				!(channel->flags & IEEE80211_CHAN_NO_IR);
2862 2863 2864 2865

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

2866 2867 2868
			ch->chan_radar =
				!!(channel->flags & IEEE80211_CHAN_RADAR);

2869
			passive = channel->flags & IEEE80211_CHAN_NO_IR;
2870 2871 2872
			ch->passive = passive;

			ch->freq = channel->center_freq;
2873
			ch->band_center_freq1 = channel->center_freq;
2874
			ch->min_power = 0;
M
Michal Kazior 已提交
2875 2876 2877
			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;
2878 2879 2880 2881 2882 2883 2884 2885 2886 2887 2888 2889 2890
			ch->reg_class_id = 0; /* FIXME */

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

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

2891
			ath10k_dbg(ar, ATH10K_DBG_WMI,
K
Kalle Valo 已提交
2892 2893
				   "mac channel [%zd/%d] freq %d maxpower %d regpower %d antenna %d mode %d\n",
				    ch - arg.channels, arg.n_channels,
2894 2895 2896 2897 2898 2899 2900 2901 2902 2903 2904 2905 2906
				   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;
}

2907 2908 2909 2910 2911 2912 2913 2914 2915 2916 2917 2918 2919 2920 2921 2922
static enum wmi_dfs_region
ath10k_mac_get_dfs_region(enum nl80211_dfs_regions dfs_region)
{
	switch (dfs_region) {
	case NL80211_DFS_UNSET:
		return WMI_UNINIT_DFS_DOMAIN;
	case NL80211_DFS_FCC:
		return WMI_FCC_DFS_DOMAIN;
	case NL80211_DFS_ETSI:
		return WMI_ETSI_DFS_DOMAIN;
	case NL80211_DFS_JP:
		return WMI_MKK4_DFS_DOMAIN;
	}
	return WMI_UNINIT_DFS_DOMAIN;
}

2923
static void ath10k_regd_update(struct ath10k *ar)
2924 2925 2926
{
	struct reg_dmn_pair_mapping *regpair;
	int ret;
2927 2928
	enum wmi_dfs_region wmi_dfs_reg;
	enum nl80211_dfs_regions nl_dfs_reg;
2929

2930
	lockdep_assert_held(&ar->conf_mutex);
2931 2932 2933

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

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

2938 2939 2940 2941 2942 2943 2944
	if (config_enabled(CONFIG_ATH10K_DFS_CERTIFIED) && ar->dfs_detector) {
		nl_dfs_reg = ar->dfs_detector->region;
		wmi_dfs_reg = ath10k_mac_get_dfs_region(nl_dfs_reg);
	} else {
		wmi_dfs_reg = WMI_UNINIT_DFS_DOMAIN;
	}

2945 2946 2947
	/* Target allows setting up per-band regdomain but ath_common provides
	 * a combined one only */
	ret = ath10k_wmi_pdev_set_regdomain(ar,
2948 2949 2950
					    regpair->reg_domain,
					    regpair->reg_domain, /* 2ghz */
					    regpair->reg_domain, /* 5ghz */
2951
					    regpair->reg_2ghz_ctl,
2952 2953
					    regpair->reg_5ghz_ctl,
					    wmi_dfs_reg);
2954
	if (ret)
2955
		ath10k_warn(ar, "failed to set pdev regdomain: %d\n", ret);
2956
}
M
Michal Kazior 已提交
2957

2958 2959 2960 2961 2962
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
2963
	bool result;
2964 2965 2966

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

J
Janusz Dziedzic 已提交
2967
	if (config_enabled(CONFIG_ATH10K_DFS_CERTIFIED) && ar->dfs_detector) {
2968
		ath10k_dbg(ar, ATH10K_DBG_REGULATORY, "dfs region 0x%x\n",
J
Janusz Dziedzic 已提交
2969 2970 2971 2972
			   request->dfs_region);
		result = ar->dfs_detector->set_dfs_domain(ar->dfs_detector,
							  request->dfs_region);
		if (!result)
2973
			ath10k_warn(ar, "DFS region 0x%X not supported, will trigger radar for every pulse\n",
J
Janusz Dziedzic 已提交
2974 2975 2976
				    request->dfs_region);
	}

2977 2978 2979
	mutex_lock(&ar->conf_mutex);
	if (ar->state == ATH10K_STATE_ON)
		ath10k_regd_update(ar);
M
Michal Kazior 已提交
2980
	mutex_unlock(&ar->conf_mutex);
2981 2982 2983 2984 2985 2986
}

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

M
Michal Kazior 已提交
2987
void ath10k_mac_tx_lock(struct ath10k *ar, int reason)
2988
{
M
Michal Kazior 已提交
2989
	lockdep_assert_held(&ar->htt.tx_lock);
2990

M
Michal Kazior 已提交
2991 2992 2993
	WARN_ON(reason >= ATH10K_TX_PAUSE_MAX);
	ar->tx_paused |= BIT(reason);
	ieee80211_stop_queues(ar->hw);
2994 2995
}

M
Michal Kazior 已提交
2996 2997
static void ath10k_mac_tx_unlock_iter(void *data, u8 *mac,
				      struct ieee80211_vif *vif)
2998
{
M
Michal Kazior 已提交
2999 3000
	struct ath10k *ar = data;
	struct ath10k_vif *arvif = ath10k_vif_to_arvif(vif);
3001

M
Michal Kazior 已提交
3002 3003
	if (arvif->tx_paused)
		return;
3004

M
Michal Kazior 已提交
3005
	ieee80211_wake_queue(ar->hw, arvif->vdev_id);
3006 3007
}

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

M
Michal Kazior 已提交
3012 3013
	WARN_ON(reason >= ATH10K_TX_PAUSE_MAX);
	ar->tx_paused &= ~BIT(reason);
3014

M
Michal Kazior 已提交
3015 3016
	if (ar->tx_paused)
		return;
3017

M
Michal Kazior 已提交
3018 3019 3020 3021
	ieee80211_iterate_active_interfaces_atomic(ar->hw,
						   IEEE80211_IFACE_ITER_RESUME_ALL,
						   ath10k_mac_tx_unlock_iter,
						   ar);
3022 3023

	ieee80211_wake_queue(ar->hw, ar->hw->offchannel_tx_hw_queue);
3024 3025
}

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

M
Michal Kazior 已提交
3030
	lockdep_assert_held(&ar->htt.tx_lock);
3031

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

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

	lockdep_assert_held(&ar->htt.tx_lock);

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

	if (ar->tx_paused)
		return;

	if (arvif->tx_paused)
		return;

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

3055 3056 3057 3058 3059 3060 3061 3062
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);

3063 3064 3065 3066 3067 3068
	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);
3069 3070
		break;
	default:
3071 3072
		ath10k_warn(ar, "received unknown tx pause action %d on vdev %i, ignoring\n",
			    action, arvif->vdev_id);
3073 3074 3075 3076 3077 3078 3079 3080 3081 3082 3083 3084 3085 3086 3087 3088
		break;
	}
}

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

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

3089 3090 3091
	if (arvif->vdev_id != arg->vdev_id)
		return;

3092 3093 3094
	ath10k_mac_vif_handle_tx_pause(arvif, arg->pause_id, arg->action);
}

3095 3096 3097
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)
3098 3099 3100 3101 3102 3103 3104 3105 3106 3107 3108 3109 3110 3111 3112
{
	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);
}

3113 3114 3115 3116 3117 3118 3119 3120 3121 3122 3123 3124 3125 3126
static u8 ath10k_tx_h_get_tid(struct ieee80211_hdr *hdr)
{
	if (ieee80211_is_mgmt(hdr->frame_control))
		return HTT_DATA_TX_EXT_TID_MGMT;

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

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

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

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

M
Michal Kazior 已提交
3132
	if (ar->monitor_started)
3133 3134
		return ar->monitor_vdev_id;

3135
	ath10k_warn(ar, "failed to resolve vdev id\n");
3136 3137 3138
	return 0;
}

3139 3140
static enum ath10k_hw_txrx_mode
ath10k_tx_h_get_txmode(struct ath10k *ar, struct ieee80211_vif *vif,
3141
		       struct ieee80211_sta *sta, struct sk_buff *skb)
3142 3143 3144 3145 3146 3147 3148 3149 3150 3151 3152 3153 3154 3155 3156 3157 3158 3159 3160 3161 3162 3163 3164 3165 3166 3167 3168 3169 3170 3171 3172
{
	const struct ieee80211_hdr *hdr = (void *)skb->data;
	__le16 fc = hdr->frame_control;

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

	if (ieee80211_is_mgmt(fc))
		return ATH10K_HW_TXRX_MGMT;

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

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

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

3187 3188 3189
	return ATH10K_HW_TXRX_NATIVE_WIFI;
}

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

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

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

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

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

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

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

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

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

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

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

M
Michal Kazior 已提交
3257 3258 3259
static void ath10k_tx_h_add_p2p_noa_ie(struct ath10k *ar,
				       struct ieee80211_vif *vif,
				       struct sk_buff *skb)
3260 3261 3262 3263 3264 3265 3266 3267 3268 3269 3270 3271 3272 3273 3274 3275 3276 3277 3278 3279 3280
{
	struct ieee80211_hdr *hdr = (struct ieee80211_hdr *)skb->data;
	struct ath10k_vif *arvif = ath10k_vif_to_arvif(vif);

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

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

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

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

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

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

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

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

	return ret;
}

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

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

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

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

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

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

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

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

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

		mutex_lock(&ar->conf_mutex);

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

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

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

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

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

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

3414
		ath10k_mac_tx(ar, skb);
3415

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

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

		mutex_unlock(&ar->conf_mutex);
	}
}

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

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

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

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

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

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

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

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

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

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

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

	lockdep_assert_held(&ar->conf_mutex);

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

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

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

	return ret;
}

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

	lockdep_assert_held(&ar->conf_mutex);
3549 3550

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

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

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

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

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

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

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

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

	lockdep_assert_held(&ar->conf_mutex);

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

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

		return -ETIMEDOUT;
3607 3608
	}

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

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

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

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

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

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

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

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

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

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

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

3690
	ath10k_mac_tx(ar, skb);
3691 3692
}

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

	ath10k_offchan_tx_purge(ar);
	ath10k_mgmt_over_wmi_tx_purge(ar);

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

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

3710 3711
	lockdep_assert_held(&ar->conf_mutex);

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

	if (ar->monitor_started)
M
Michal Kazior 已提交
3718
		ath10k_monitor_stop(ar);
3719 3720

	ar->monitor_started = false;
M
Michal Kazior 已提交
3721
	ar->tx_paused = 0;
M
Michal Kazior 已提交
3722

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

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

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

	mutex_lock(&ar->conf_mutex);

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

	mutex_unlock(&ar->conf_mutex);

	return 0;
}

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

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

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

	lockdep_assert_held(&ar->conf_mutex);

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

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

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

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

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

	return 0;
}

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

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

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

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

M
Michal Kazior 已提交
3825 3826
	mutex_lock(&ar->conf_mutex);

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

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

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

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

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

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

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

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

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

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

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

3917 3918
	ar->ani_enabled = true;

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

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

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

err_core_stop:
	ath10k_core_stop(ar);

err_power_down:
	ath10k_hif_power_down(ar);

err_off:
	ar->state = ATH10K_STATE_OFF;

err:
M
Michal Kazior 已提交
3938
	mutex_unlock(&ar->conf_mutex);
3939
	return ret;
3940 3941 3942 3943 3944 3945
}

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

3946 3947
	ath10k_drain_tx(ar);

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

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

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

	lockdep_assert_held(&ar->conf_mutex);

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

3974
	return ret;
3975 3976
}

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

	lockdep_assert_held(&ar->conf_mutex);

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

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

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

	return 0;
}

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

	lockdep_assert_held(&ar->conf_mutex);

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

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

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

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

	return 0;
}

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

	mutex_lock(&ar->conf_mutex);

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

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

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

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

4067 4068 4069 4070 4071 4072 4073 4074 4075 4076 4077 4078 4079 4080 4081 4082
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;
}

4083 4084 4085 4086
static int ath10k_mac_set_txbf_conf(struct ath10k_vif *arvif)
{
	u32 value = 0;
	struct ath10k *ar = arvif->ar;
4087
	int nsts;
4088 4089 4090 4091

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

4092
	nsts = ath10k_mac_get_vht_cap_bf_sts(ar);
4093 4094
	if (ar->vht_cap_info & (IEEE80211_VHT_CAP_SU_BEAMFORMEE_CAPABLE |
				IEEE80211_VHT_CAP_MU_BEAMFORMEE_CAPABLE))
4095
		value |= SM(nsts, WMI_TXBF_STS_CAP_OFFSET);
4096 4097 4098 4099 4100 4101 4102 4103 4104 4105 4106 4107 4108 4109 4110 4111 4112 4113 4114 4115 4116 4117 4118 4119 4120 4121

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

	if (!value)
		return 0;

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

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

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

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

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

4122 4123 4124 4125 4126 4127 4128 4129 4130 4131 4132 4133 4134 4135
/*
 * TODO:
 * Figure out how to handle WMI_VDEV_SUBTYPE_P2P_DEVICE,
 * because we will send mgmt frames without CCK. This requirement
 * for P2P_FIND/GO_NEG should be handled by checking CCK flag
 * in the TX packet.
 */
static int ath10k_add_interface(struct ieee80211_hw *hw,
				struct ieee80211_vif *vif)
{
	struct ath10k *ar = hw->priv;
	struct ath10k_vif *arvif = ath10k_vif_to_arvif(vif);
	enum wmi_sta_powersave_param param;
	int ret = 0;
4136
	u32 value;
4137
	int bit;
M
Michal Kazior 已提交
4138
	int i;
4139
	u32 vdev_param;
4140

4141 4142
	vif->driver_flags |= IEEE80211_VIF_SUPPORTS_UAPSD;

4143 4144
	mutex_lock(&ar->conf_mutex);

4145 4146
	memset(arvif, 0, sizeof(*arvif));

4147 4148 4149
	arvif->ar = ar;
	arvif->vif = vif;

4150
	INIT_LIST_HEAD(&arvif->list);
4151
	INIT_WORK(&arvif->ap_csa_work, ath10k_mac_vif_ap_csa_work);
4152 4153
	INIT_DELAYED_WORK(&arvif->connection_loss_work,
			  ath10k_mac_vif_sta_connection_loss_work);
4154

4155 4156 4157 4158 4159 4160 4161
	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));
	}
4162

4163 4164
	if (ar->num_peers >= ar->max_num_peers) {
		ath10k_warn(ar, "refusing vdev creation due to insufficient peer entry resources in firmware\n");
4165 4166
		ret = -ENOBUFS;
		goto err;
4167 4168
	}

B
Ben Greear 已提交
4169
	if (ar->free_vdev_map == 0) {
4170
		ath10k_warn(ar, "Free vdev map is empty, no more interfaces allowed.\n");
4171
		ret = -EBUSY;
4172
		goto err;
4173
	}
B
Ben Greear 已提交
4174
	bit = __ffs64(ar->free_vdev_map);
4175

B
Ben Greear 已提交
4176 4177
	ath10k_dbg(ar, ATH10K_DBG_MAC, "mac create vdev %i map %llx\n",
		   bit, ar->free_vdev_map);
4178

B
Ben Greear 已提交
4179
	arvif->vdev_id = bit;
4180 4181 4182
	arvif->vdev_subtype = WMI_VDEV_SUBTYPE_NONE;

	switch (vif->type) {
M
Michal Kazior 已提交
4183 4184 4185 4186
	case NL80211_IFTYPE_P2P_DEVICE:
		arvif->vdev_type = WMI_VDEV_TYPE_STA;
		arvif->vdev_subtype = WMI_VDEV_SUBTYPE_P2P_DEVICE;
		break;
4187 4188 4189 4190 4191 4192 4193 4194 4195 4196 4197 4198 4199 4200 4201 4202 4203 4204 4205 4206 4207 4208 4209
	case NL80211_IFTYPE_UNSPECIFIED:
	case NL80211_IFTYPE_STATION:
		arvif->vdev_type = WMI_VDEV_TYPE_STA;
		if (vif->p2p)
			arvif->vdev_subtype = WMI_VDEV_SUBTYPE_P2P_CLIENT;
		break;
	case NL80211_IFTYPE_ADHOC:
		arvif->vdev_type = WMI_VDEV_TYPE_IBSS;
		break;
	case NL80211_IFTYPE_AP:
		arvif->vdev_type = WMI_VDEV_TYPE_AP;

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

M
Michal Kazior 已提交
4210 4211 4212 4213 4214 4215 4216 4217 4218
	/* 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);

4219 4220 4221 4222 4223 4224 4225 4226 4227 4228 4229 4230 4231 4232 4233 4234 4235 4236 4237 4238 4239
	/* Some firmware revisions don't wait for beacon tx completion before
	 * sending another SWBA event. This could lead to hardware using old
	 * (freed) beacon data in some cases, e.g. tx credit starvation
	 * combined with missed TBTT. This is very very rare.
	 *
	 * On non-IOMMU-enabled hosts this could be a possible security issue
	 * because hw could beacon some random data on the air.  On
	 * IOMMU-enabled hosts DMAR faults would occur in most cases and target
	 * device would crash.
	 *
	 * Since there are no beacon tx completions (implicit nor explicit)
	 * propagated to host the only workaround for this is to allocate a
	 * DMA-coherent buffer for a lifetime of a vif and use it for all
	 * beacon tx commands. Worst case for this approach is some beacons may
	 * become corrupted, e.g. have garbled IEs or out-of-date TIM bitmap.
	 */
	if (vif->type == NL80211_IFTYPE_ADHOC ||
	    vif->type == NL80211_IFTYPE_AP) {
		arvif->beacon_buf = dma_zalloc_coherent(ar->dev,
							IEEE80211_MAX_FRAME_LEN,
							&arvif->beacon_paddr,
4240
							GFP_ATOMIC);
4241 4242 4243 4244 4245 4246 4247
		if (!arvif->beacon_buf) {
			ret = -ENOMEM;
			ath10k_warn(ar, "failed to allocate beacon buffer: %d\n",
				    ret);
			goto err;
		}
	}
4248 4249 4250 4251 4252 4253 4254 4255
	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;
	}
4256 4257 4258 4259

	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");
4260 4261 4262 4263

	ret = ath10k_wmi_vdev_create(ar, arvif->vdev_id, arvif->vdev_type,
				     arvif->vdev_subtype, vif->addr);
	if (ret) {
4264
		ath10k_warn(ar, "failed to create WMI vdev %i: %d\n",
4265
			    arvif->vdev_id, ret);
4266
		goto err;
4267 4268
	}

B
Ben Greear 已提交
4269
	ar->free_vdev_map &= ~(1LL << arvif->vdev_id);
M
Michal Kazior 已提交
4270
	list_add(&arvif->list, &ar->arvifs);
4271

M
Michal Kazior 已提交
4272 4273 4274 4275
	/* 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);
4276
	if (ret) {
M
Michal Kazior 已提交
4277
		ath10k_warn(ar, "failed to disable keepalive on vdev %i: %d\n",
4278
			    arvif->vdev_id, ret);
4279 4280
		goto err_vdev_delete;
	}
4281

4282
	arvif->def_wep_key_idx = -1;
4283

4284 4285
	vdev_param = ar->wmi.vdev_param->tx_encap_type;
	ret = ath10k_wmi_vdev_set_param(ar, arvif->vdev_id, vdev_param,
4286
					ATH10K_HW_TXRX_NATIVE_WIFI);
4287
	/* 10.X firmware does not support this VDEV parameter. Do not warn */
4288
	if (ret && ret != -EOPNOTSUPP) {
4289
		ath10k_warn(ar, "failed to set vdev %i TX encapsulation: %d\n",
4290
			    arvif->vdev_id, ret);
4291 4292
		goto err_vdev_delete;
	}
4293

4294 4295 4296 4297 4298 4299 4300 4301 4302 4303 4304 4305 4306 4307
	if (ar->cfg_tx_chainmask) {
		u16 nss = get_nss_from_chainmask(ar->cfg_tx_chainmask);

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

4308 4309
	if (arvif->vdev_type == WMI_VDEV_TYPE_AP ||
	    arvif->vdev_type == WMI_VDEV_TYPE_IBSS) {
4310 4311
		ret = ath10k_peer_create(ar, arvif->vdev_id, vif->addr,
					 WMI_PEER_TYPE_DEFAULT);
4312
		if (ret) {
4313
			ath10k_warn(ar, "failed to create vdev %i peer for AP/IBSS: %d\n",
4314
				    arvif->vdev_id, ret);
4315
			goto err_vdev_delete;
4316
		}
4317
	}
4318

4319
	if (arvif->vdev_type == WMI_VDEV_TYPE_AP) {
4320 4321
		ret = ath10k_mac_set_kickout(arvif);
		if (ret) {
4322
			ath10k_warn(ar, "failed to set vdev %i kickout parameters: %d\n",
4323
				    arvif->vdev_id, ret);
4324 4325
			goto err_peer_delete;
		}
4326 4327 4328 4329 4330 4331 4332
	}

	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);
4333
		if (ret) {
4334
			ath10k_warn(ar, "failed to set vdev %i RX wake policy: %d\n",
4335
				    arvif->vdev_id, ret);
4336 4337
			goto err_peer_delete;
		}
4338

M
Michal Kazior 已提交
4339
		ret = ath10k_mac_vif_recalc_ps_wake_threshold(arvif);
4340
		if (ret) {
M
Michal Kazior 已提交
4341
			ath10k_warn(ar, "failed to recalc ps wake threshold on vdev %i: %d\n",
4342
				    arvif->vdev_id, ret);
4343 4344
			goto err_peer_delete;
		}
4345

M
Michal Kazior 已提交
4346
		ret = ath10k_mac_vif_recalc_ps_poll_count(arvif);
4347
		if (ret) {
M
Michal Kazior 已提交
4348
			ath10k_warn(ar, "failed to recalc ps poll count on vdev %i: %d\n",
4349
				    arvif->vdev_id, ret);
4350 4351
			goto err_peer_delete;
		}
4352 4353
	}

4354 4355 4356 4357 4358 4359 4360
	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;
	}

4361
	ret = ath10k_mac_set_rts(arvif, ar->hw->wiphy->rts_threshold);
4362
	if (ret) {
4363
		ath10k_warn(ar, "failed to set rts threshold for vdev %d: %d\n",
4364
			    arvif->vdev_id, ret);
4365 4366
		goto err_peer_delete;
	}
4367

4368 4369 4370 4371 4372 4373 4374
	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
4375 4376 4377 4378 4379 4380 4381 4382 4383
	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;
		}
	}

4384 4385 4386 4387 4388
	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);

4389
	mutex_unlock(&ar->conf_mutex);
4390 4391 4392
	return 0;

err_peer_delete:
4393 4394
	if (arvif->vdev_type == WMI_VDEV_TYPE_AP ||
	    arvif->vdev_type == WMI_VDEV_TYPE_IBSS)
4395 4396 4397 4398
		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
4399
	ar->free_vdev_map |= 1LL << arvif->vdev_id;
M
Michal Kazior 已提交
4400
	list_del(&arvif->list);
4401 4402

err:
4403 4404 4405 4406 4407 4408
	if (arvif->beacon_buf) {
		dma_free_coherent(ar->dev, IEEE80211_MAX_FRAME_LEN,
				  arvif->beacon_buf, arvif->beacon_paddr);
		arvif->beacon_buf = NULL;
	}

4409 4410
	mutex_unlock(&ar->conf_mutex);

4411 4412 4413
	return ret;
}

4414 4415 4416 4417 4418 4419 4420 4421
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);
}

4422 4423 4424 4425 4426 4427 4428
static void ath10k_remove_interface(struct ieee80211_hw *hw,
				    struct ieee80211_vif *vif)
{
	struct ath10k *ar = hw->priv;
	struct ath10k_vif *arvif = ath10k_vif_to_arvif(vif);
	int ret;

4429
	cancel_work_sync(&arvif->ap_csa_work);
4430
	cancel_delayed_work_sync(&arvif->connection_loss_work);
4431

4432 4433
	mutex_lock(&ar->conf_mutex);

4434
	spin_lock_bh(&ar->data_lock);
4435
	ath10k_mac_vif_beacon_cleanup(arvif);
4436 4437
	spin_unlock_bh(&ar->data_lock);

4438 4439
	ret = ath10k_spectral_vif_stop(arvif);
	if (ret)
4440
		ath10k_warn(ar, "failed to stop spectral for vdev %i: %d\n",
4441 4442
			    arvif->vdev_id, ret);

B
Ben Greear 已提交
4443
	ar->free_vdev_map |= 1LL << arvif->vdev_id;
M
Michal Kazior 已提交
4444
	list_del(&arvif->list);
4445

4446 4447
	if (arvif->vdev_type == WMI_VDEV_TYPE_AP ||
	    arvif->vdev_type == WMI_VDEV_TYPE_IBSS) {
4448 4449
		ret = ath10k_wmi_peer_delete(arvif->ar, arvif->vdev_id,
					     vif->addr);
4450
		if (ret)
4451
			ath10k_warn(ar, "failed to submit AP/IBSS self-peer removal on vdev %i: %d\n",
4452
				    arvif->vdev_id, ret);
4453 4454 4455 4456

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

4457
	ath10k_dbg(ar, ATH10K_DBG_MAC, "mac vdev %i delete (remove interface)\n",
K
Kalle Valo 已提交
4458 4459
		   arvif->vdev_id);

4460 4461
	ret = ath10k_wmi_vdev_delete(ar, arvif->vdev_id);
	if (ret)
4462
		ath10k_warn(ar, "failed to delete WMI vdev %i: %d\n",
4463
			    arvif->vdev_id, ret);
4464

4465 4466 4467
	/* Some firmware revisions don't notify host about self-peer removal
	 * until after associated vdev is deleted.
	 */
4468 4469
	if (arvif->vdev_type == WMI_VDEV_TYPE_AP ||
	    arvif->vdev_type == WMI_VDEV_TYPE_IBSS) {
4470 4471 4472 4473 4474 4475 4476 4477 4478 4479 4480
		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);
	}

4481 4482
	ath10k_peer_cleanup(ar, arvif->vdev_id);

M
Michal Kazior 已提交
4483 4484 4485 4486 4487 4488 4489
	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);
	}

4490 4491 4492 4493
	spin_lock_bh(&ar->htt.tx_lock);
	ath10k_mac_vif_tx_unlock_all(arvif);
	spin_unlock_bh(&ar->htt.tx_lock);

4494 4495 4496 4497 4498 4499 4500
	mutex_unlock(&ar->conf_mutex);
}

/*
 * FIXME: Has to be verified.
 */
#define SUPPORTED_FILTERS			\
4501
	(FIF_ALLMULTI |				\
4502 4503 4504 4505 4506 4507 4508 4509 4510 4511 4512 4513 4514 4515 4516 4517 4518 4519 4520 4521 4522
	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;

4523 4524 4525
	ret = ath10k_monitor_recalc(ar);
	if (ret)
		ath10k_warn(ar, "failed to recalc montior: %d\n", ret);
4526 4527 4528 4529 4530 4531 4532 4533 4534 4535 4536 4537

	mutex_unlock(&ar->conf_mutex);
}

static void ath10k_bss_info_changed(struct ieee80211_hw *hw,
				    struct ieee80211_vif *vif,
				    struct ieee80211_bss_conf *info,
				    u32 changed)
{
	struct ath10k *ar = hw->priv;
	struct ath10k_vif *arvif = ath10k_vif_to_arvif(vif);
	int ret = 0;
4538
	u32 vdev_param, pdev_param, slottime, preamble;
4539 4540 4541 4542 4543 4544 4545 4546

	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;
4547 4548
		vdev_param = ar->wmi.vdev_param->beacon_interval;
		ret = ath10k_wmi_vdev_set_param(ar, arvif->vdev_id, vdev_param,
4549
						arvif->beacon_interval);
4550
		ath10k_dbg(ar, ATH10K_DBG_MAC,
K
Kalle Valo 已提交
4551 4552 4553
			   "mac vdev %d beacon_interval %d\n",
			   arvif->vdev_id, arvif->beacon_interval);

4554
		if (ret)
4555
			ath10k_warn(ar, "failed to set beacon interval for vdev %d: %i\n",
4556
				    arvif->vdev_id, ret);
4557 4558 4559
	}

	if (changed & BSS_CHANGED_BEACON) {
4560
		ath10k_dbg(ar, ATH10K_DBG_MAC,
K
Kalle Valo 已提交
4561 4562 4563
			   "vdev %d set beacon tx mode to staggered\n",
			   arvif->vdev_id);

4564 4565
		pdev_param = ar->wmi.pdev_param->beacon_tx_mode;
		ret = ath10k_wmi_pdev_set_param(ar, pdev_param,
4566 4567
						WMI_BEACON_STAGGERED_MODE);
		if (ret)
4568
			ath10k_warn(ar, "failed to set beacon mode for vdev %d: %i\n",
4569
				    arvif->vdev_id, ret);
4570 4571 4572 4573 4574 4575 4576 4577 4578 4579 4580 4581

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

	if (changed & BSS_CHANGED_AP_PROBE_RESP) {
		ret = ath10k_mac_setup_prb_tmpl(arvif);
		if (ret)
			ath10k_warn(ar, "failed to setup probe resp template on vdev %i: %d\n",
				    arvif->vdev_id, ret);
4582 4583
	}

4584
	if (changed & (BSS_CHANGED_BEACON_INFO | BSS_CHANGED_BEACON)) {
4585 4586
		arvif->dtim_period = info->dtim_period;

4587
		ath10k_dbg(ar, ATH10K_DBG_MAC,
K
Kalle Valo 已提交
4588 4589 4590
			   "mac vdev %d dtim_period %d\n",
			   arvif->vdev_id, arvif->dtim_period);

4591 4592
		vdev_param = ar->wmi.vdev_param->dtim_period;
		ret = ath10k_wmi_vdev_set_param(ar, arvif->vdev_id, vdev_param,
4593 4594
						arvif->dtim_period);
		if (ret)
4595
			ath10k_warn(ar, "failed to set dtim period for vdev %d: %i\n",
4596
				    arvif->vdev_id, ret);
4597 4598 4599 4600 4601 4602 4603 4604 4605 4606
	}

	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;
	}

4607 4608
	if (changed & BSS_CHANGED_BSSID && !is_zero_ether_addr(info->bssid))
		ether_addr_copy(arvif->bssid, info->bssid);
4609 4610 4611 4612 4613

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

	if (changed & BSS_CHANGED_ERP_CTS_PROT) {
4614
		arvif->use_cts_prot = info->use_cts_prot;
4615
		ath10k_dbg(ar, ATH10K_DBG_MAC, "mac vdev %d cts_prot %d\n",
4616
			   arvif->vdev_id, info->use_cts_prot);
K
Kalle Valo 已提交
4617

4618
		ret = ath10k_recalc_rtscts_prot(arvif);
4619
		if (ret)
4620
			ath10k_warn(ar, "failed to recalculate rts/cts prot for vdev %d: %d\n",
4621
				    arvif->vdev_id, ret);
M
Michal Kazior 已提交
4622 4623 4624 4625 4626 4627 4628

		vdev_param = ar->wmi.vdev_param->protection_mode;
		ret = ath10k_wmi_vdev_set_param(ar, arvif->vdev_id, vdev_param,
						info->use_cts_prot ? 1 : 0);
		if (ret)
			ath10k_warn(ar, "failed to set protection mode %d on vdev %i: %d\n",
					info->use_cts_prot, arvif->vdev_id, ret);
4629 4630 4631 4632 4633 4634 4635 4636 4637
	}

	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 */

4638
		ath10k_dbg(ar, ATH10K_DBG_MAC, "mac vdev %d slot_time %d\n",
K
Kalle Valo 已提交
4639 4640
			   arvif->vdev_id, slottime);

4641 4642
		vdev_param = ar->wmi.vdev_param->slot_time;
		ret = ath10k_wmi_vdev_set_param(ar, arvif->vdev_id, vdev_param,
4643 4644
						slottime);
		if (ret)
4645
			ath10k_warn(ar, "failed to set erp slot for vdev %d: %i\n",
4646
				    arvif->vdev_id, ret);
4647 4648 4649 4650 4651 4652 4653 4654
	}

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

4655
		ath10k_dbg(ar, ATH10K_DBG_MAC,
K
Kalle Valo 已提交
4656 4657 4658
			   "mac vdev %d preamble %dn",
			   arvif->vdev_id, preamble);

4659 4660
		vdev_param = ar->wmi.vdev_param->preamble;
		ret = ath10k_wmi_vdev_set_param(ar, arvif->vdev_id, vdev_param,
4661 4662
						preamble);
		if (ret)
4663
			ath10k_warn(ar, "failed to set preamble for vdev %d: %i\n",
4664
				    arvif->vdev_id, ret);
4665 4666 4667
	}

	if (changed & BSS_CHANGED_ASSOC) {
4668 4669 4670 4671 4672 4673 4674
		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);
4675
			ath10k_bss_assoc(hw, vif, info);
4676
			ath10k_monitor_recalc(ar);
4677 4678
		} else {
			ath10k_bss_disassoc(hw, vif);
4679
		}
4680 4681
	}

4682 4683 4684 4685 4686 4687 4688 4689 4690 4691
	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);
	}

4692
	if (changed & BSS_CHANGED_PS) {
4693 4694 4695
		arvif->ps = vif->bss_conf.ps;

		ret = ath10k_config_ps(ar);
4696 4697 4698 4699 4700
		if (ret)
			ath10k_warn(ar, "failed to setup ps on vdev %i: %d\n",
				    arvif->vdev_id, ret);
	}

4701 4702 4703 4704 4705
	mutex_unlock(&ar->conf_mutex);
}

static int ath10k_hw_scan(struct ieee80211_hw *hw,
			  struct ieee80211_vif *vif,
4706
			  struct ieee80211_scan_request *hw_req)
4707 4708 4709
{
	struct ath10k *ar = hw->priv;
	struct ath10k_vif *arvif = ath10k_vif_to_arvif(vif);
4710
	struct cfg80211_scan_request *req = &hw_req->req;
4711 4712 4713 4714 4715 4716 4717
	struct wmi_start_scan_arg arg;
	int ret = 0;
	int i;

	mutex_lock(&ar->conf_mutex);

	spin_lock_bh(&ar->data_lock);
4718 4719 4720 4721 4722 4723 4724 4725 4726 4727 4728 4729
	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:
4730
		ret = -EBUSY;
4731
		break;
4732 4733 4734
	}
	spin_unlock_bh(&ar->data_lock);

4735 4736 4737
	if (ret)
		goto exit;

4738 4739 4740 4741 4742 4743 4744 4745 4746 4747 4748 4749 4750 4751 4752 4753
	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;
		}
4754 4755
	} else {
		arg.scan_ctrl_flags |= WMI_SCAN_FLAG_PASSIVE;
4756 4757 4758 4759 4760 4761 4762 4763 4764 4765
	}

	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) {
4766
		ath10k_warn(ar, "failed to start hw scan: %d\n", ret);
4767
		spin_lock_bh(&ar->data_lock);
4768
		ar->scan.state = ATH10K_SCAN_IDLE;
4769 4770 4771 4772 4773 4774 4775 4776 4777 4778 4779 4780 4781 4782
		spin_unlock_bh(&ar->data_lock);
	}

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

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

	mutex_lock(&ar->conf_mutex);
4783
	ath10k_scan_abort(ar);
4784
	mutex_unlock(&ar->conf_mutex);
4785 4786

	cancel_delayed_work_sync(&ar->scan.timeout);
4787 4788
}

4789 4790 4791 4792 4793 4794 4795 4796 4797 4798 4799 4800 4801
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
4802 4803 4804 4805 4806
	 * 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.
	 */
4807

M
Michal Kazior 已提交
4808 4809
	if (arvif->vdev_type != WMI_VDEV_TYPE_AP &&
	    arvif->vdev_type != WMI_VDEV_TYPE_IBSS)
4810 4811 4812 4813 4814 4815 4816 4817 4818 4819 4820 4821 4822 4823 4824 4825 4826
		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)
4827
		ath10k_warn(ar, "failed to set vdev %i group key as default key: %d\n",
4828
			    arvif->vdev_id, ret);
4829 4830
}

4831 4832 4833 4834 4835 4836 4837 4838 4839 4840 4841
static int ath10k_set_key(struct ieee80211_hw *hw, enum set_key_cmd cmd,
			  struct ieee80211_vif *vif, struct ieee80211_sta *sta,
			  struct ieee80211_key_conf *key)
{
	struct ath10k *ar = hw->priv;
	struct ath10k_vif *arvif = ath10k_vif_to_arvif(vif);
	struct ath10k_peer *peer;
	const u8 *peer_addr;
	bool is_wep = key->cipher == WLAN_CIPHER_SUITE_WEP40 ||
		      key->cipher == WLAN_CIPHER_SUITE_WEP104;
	int ret = 0;
4842
	int ret2;
4843
	u32 flags = 0;
4844
	u32 flags2;
4845

4846 4847 4848
	/* this one needs to be done in software */
	if (key->cipher == WLAN_CIPHER_SUITE_AES_CMAC)
		return 1;
4849

4850 4851 4852
	if (arvif->nohwcrypt)
		return 1;

4853 4854 4855 4856 4857 4858 4859 4860 4861 4862 4863 4864 4865 4866
	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;

4867 4868 4869 4870 4871 4872 4873
	if (is_wep) {
		if (cmd == SET_KEY)
			arvif->wep_keys[key->keyidx] = key;
		else
			arvif->wep_keys[key->keyidx] = NULL;
	}

4874 4875 4876 4877 4878 4879 4880 4881
	/* 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) {
4882
			ath10k_warn(ar, "failed to install key for non-existent peer %pM\n",
4883 4884 4885 4886 4887 4888 4889 4890 4891 4892
				    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
4893 4894 4895 4896
	if (key->flags & IEEE80211_KEY_FLAG_PAIRWISE)
		flags |= WMI_KEY_PAIRWISE;
	else
		flags |= WMI_KEY_GROUP;
4897 4898 4899 4900 4901

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

4902 4903 4904 4905 4906 4907 4908 4909
		/* 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);

4910 4911 4912 4913 4914 4915 4916 4917 4918
		/* 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;
	}
4919

4920
	ret = ath10k_install_key(arvif, key, cmd, peer_addr, flags);
4921
	if (ret) {
4922
		WARN_ON(ret > 0);
4923
		ath10k_warn(ar, "failed to install key for vdev %i peer %pM: %d\n",
4924
			    arvif->vdev_id, peer_addr, ret);
4925 4926 4927
		goto exit;
	}

4928 4929 4930 4931 4932 4933 4934 4935 4936 4937
	/* 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) {
4938
			WARN_ON(ret > 0);
4939 4940 4941 4942
			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);
4943 4944
			if (ret2) {
				WARN_ON(ret2 > 0);
4945 4946
				ath10k_warn(ar, "failed to disable (mcast) key for vdev %i peer %pM: %d\n",
					    arvif->vdev_id, peer_addr, ret2);
4947
			}
4948 4949 4950 4951
			goto exit;
		}
	}

4952 4953
	ath10k_set_key_h_def_keyidx(ar, arvif, cmd, key);

4954 4955 4956 4957 4958 4959 4960 4961
	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 */
4962
		ath10k_warn(ar, "Peer %pM disappeared!\n", peer_addr);
4963 4964 4965 4966 4967 4968 4969
	spin_unlock_bh(&ar->data_lock);

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

4970 4971 4972 4973 4974 4975 4976 4977 4978 4979 4980 4981 4982 4983 4984 4985 4986 4987 4988 4989 4990 4991 4992 4993 4994 4995 4996 4997 4998
static void ath10k_set_default_unicast_key(struct ieee80211_hw *hw,
					   struct ieee80211_vif *vif,
					   int keyidx)
{
	struct ath10k *ar = hw->priv;
	struct ath10k_vif *arvif = ath10k_vif_to_arvif(vif);
	int ret;

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

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

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

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

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

	arvif->def_wep_key_idx = keyidx;
4999

5000 5001 5002 5003
unlock:
	mutex_unlock(&arvif->ar->conf_mutex);
}

5004 5005 5006 5007 5008 5009
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;
5010 5011 5012 5013
	struct cfg80211_chan_def def;
	enum ieee80211_band band;
	const u8 *ht_mcs_mask;
	const u16 *vht_mcs_mask;
5014 5015 5016 5017 5018 5019 5020 5021
	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;

5022 5023 5024 5025 5026 5027 5028
	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;

5029 5030 5031 5032 5033 5034 5035 5036 5037 5038 5039 5040 5041
	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);

5042 5043 5044 5045
	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)));

5046
	if (changed & IEEE80211_RC_BW_CHANGED) {
5047
		ath10k_dbg(ar, ATH10K_DBG_MAC, "mac update sta %pM peer bw %d\n",
5048 5049 5050 5051 5052
			   sta->addr, bw);

		err = ath10k_wmi_peer_set_param(ar, arvif->vdev_id, sta->addr,
						WMI_PEER_CHAN_WIDTH, bw);
		if (err)
5053
			ath10k_warn(ar, "failed to update STA %pM peer bw %d: %d\n",
5054 5055 5056 5057
				    sta->addr, bw, err);
	}

	if (changed & IEEE80211_RC_NSS_CHANGED) {
5058
		ath10k_dbg(ar, ATH10K_DBG_MAC, "mac update sta %pM nss %d\n",
5059 5060 5061 5062 5063
			   sta->addr, nss);

		err = ath10k_wmi_peer_set_param(ar, arvif->vdev_id, sta->addr,
						WMI_PEER_NSS, nss);
		if (err)
5064
			ath10k_warn(ar, "failed to update STA %pM nss %d: %d\n",
5065 5066 5067 5068
				    sta->addr, nss, err);
	}

	if (changed & IEEE80211_RC_SMPS_CHANGED) {
5069
		ath10k_dbg(ar, ATH10K_DBG_MAC, "mac update sta %pM smps %d\n",
5070 5071 5072 5073 5074
			   sta->addr, smps);

		err = ath10k_wmi_peer_set_param(ar, arvif->vdev_id, sta->addr,
						WMI_PEER_SMPS_STATE, smps);
		if (err)
5075
			ath10k_warn(ar, "failed to update STA %pM smps %d: %d\n",
5076 5077 5078
				    sta->addr, smps, err);
	}

5079 5080 5081
	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",
5082 5083
			   sta->addr);

M
Michal Kazior 已提交
5084
		err = ath10k_station_assoc(ar, arvif->vif, sta, true);
5085
		if (err)
5086
			ath10k_warn(ar, "failed to reassociate station: %pM\n",
5087 5088 5089
				    sta->addr);
	}

5090 5091 5092
	mutex_unlock(&ar->conf_mutex);
}

M
Marek Puzyniak 已提交
5093 5094
static int ath10k_mac_inc_num_stations(struct ath10k_vif *arvif,
				       struct ieee80211_sta *sta)
5095 5096 5097 5098 5099
{
	struct ath10k *ar = arvif->ar;

	lockdep_assert_held(&ar->conf_mutex);

M
Marek Puzyniak 已提交
5100
	if (arvif->vdev_type == WMI_VDEV_TYPE_STA && !sta->tdls)
5101 5102 5103 5104 5105 5106 5107 5108 5109 5110
		return 0;

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

	ar->num_stations++;

	return 0;
}

M
Marek Puzyniak 已提交
5111 5112
static void ath10k_mac_dec_num_stations(struct ath10k_vif *arvif,
					struct ieee80211_sta *sta)
5113 5114 5115 5116 5117
{
	struct ath10k *ar = arvif->ar;

	lockdep_assert_held(&ar->conf_mutex);

M
Marek Puzyniak 已提交
5118
	if (arvif->vdev_type == WMI_VDEV_TYPE_STA && !sta->tdls)
5119 5120 5121 5122 5123
		return;

	ar->num_stations--;
}

5124 5125 5126 5127 5128 5129 5130
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)
5131
{
5132
	struct ath10k_mac_tdls_iter_data *iter_data = data;
5133
	struct ath10k_sta *arsta = (struct ath10k_sta *)sta->drv_priv;
5134
	struct ieee80211_vif *sta_vif = arsta->arvif->vif;
5135

5136 5137 5138 5139 5140 5141 5142 5143 5144 5145 5146 5147 5148 5149 5150 5151 5152 5153 5154 5155 5156 5157 5158 5159 5160 5161 5162 5163 5164 5165 5166 5167 5168 5169 5170 5171 5172 5173 5174 5175 5176
	if (sta->tdls && sta_vif == iter_data->curr_vif)
		iter_data->num_tdls_stations++;
}

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

	data.curr_vif = vif;

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

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

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

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

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

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

5177 5178 5179 5180 5181 5182 5183 5184
static int ath10k_sta_state(struct ieee80211_hw *hw,
			    struct ieee80211_vif *vif,
			    struct ieee80211_sta *sta,
			    enum ieee80211_sta_state old_state,
			    enum ieee80211_sta_state new_state)
{
	struct ath10k *ar = hw->priv;
	struct ath10k_vif *arvif = ath10k_vif_to_arvif(vif);
5185
	struct ath10k_sta *arsta = (struct ath10k_sta *)sta->drv_priv;
5186 5187
	int ret = 0;

5188 5189 5190 5191 5192 5193 5194
	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);
	}

5195 5196 5197 5198 5199
	/* 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);

5200 5201 5202
	mutex_lock(&ar->conf_mutex);

	if (old_state == IEEE80211_STA_NOTEXIST &&
5203
	    new_state == IEEE80211_STA_NONE) {
5204 5205 5206
		/*
		 * New station addition.
		 */
5207 5208 5209 5210
		enum wmi_peer_type peer_type = WMI_PEER_TYPE_DEFAULT;
		u32 num_tdls_stations;
		u32 num_tdls_vifs;

5211 5212 5213 5214 5215
		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);
5216

M
Marek Puzyniak 已提交
5217
		ret = ath10k_mac_inc_num_stations(arvif, sta);
5218 5219 5220
		if (ret) {
			ath10k_warn(ar, "refusing to associate station: too many connected already (%d)\n",
				    ar->max_num_stations);
5221 5222 5223
			goto exit;
		}

5224 5225 5226
		if (sta->tdls)
			peer_type = WMI_PEER_TYPE_TDLS;

5227
		ret = ath10k_peer_create(ar, arvif->vdev_id, sta->addr,
5228
					 peer_type);
M
Michal Kazior 已提交
5229
		if (ret) {
5230
			ath10k_warn(ar, "failed to add peer %pM for vdev %d when adding a new sta: %i\n",
5231
				    sta->addr, arvif->vdev_id, ret);
M
Marek Puzyniak 已提交
5232
			ath10k_mac_dec_num_stations(arvif, sta);
M
Michal Kazior 已提交
5233 5234
			goto exit;
		}
5235

5236 5237 5238 5239 5240 5241 5242 5243 5244 5245 5246 5247 5248
		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
5249 5250
			goto exit;
		}
5251

5252 5253 5254
		if (num_tdls_stations == 0) {
			/* This is the first tdls peer in current vif */
			enum wmi_tdls_state state = WMI_TDLS_ENABLE_ACTIVE;
5255

5256 5257
			ret = ath10k_wmi_update_fw_tdls_state(ar, arvif->vdev_id,
							      state);
5258
			if (ret) {
5259
				ath10k_warn(ar, "failed to update fw tdls state on vdev %i: %i\n",
5260
					    arvif->vdev_id, ret);
5261 5262 5263
				ath10k_peer_delete(ar, arvif->vdev_id,
						   sta->addr);
				ath10k_mac_dec_num_stations(arvif, sta);
5264 5265
				goto exit;
			}
5266 5267 5268 5269 5270 5271 5272 5273 5274 5275
		}

		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);
5276

5277 5278 5279 5280
			if (num_tdls_stations != 0)
				goto exit;
			ath10k_wmi_update_fw_tdls_state(ar, arvif->vdev_id,
							WMI_TDLS_DISABLE);
5281
		}
5282 5283 5284 5285 5286
	} else if ((old_state == IEEE80211_STA_NONE &&
		    new_state == IEEE80211_STA_NOTEXIST)) {
		/*
		 * Existing station deletion.
		 */
5287
		ath10k_dbg(ar, ATH10K_DBG_MAC,
K
Kalle Valo 已提交
5288 5289
			   "mac vdev %d peer delete %pM (sta gone)\n",
			   arvif->vdev_id, sta->addr);
5290

5291 5292
		ret = ath10k_peer_delete(ar, arvif->vdev_id, sta->addr);
		if (ret)
5293
			ath10k_warn(ar, "failed to delete peer %pM for vdev %d: %i\n",
5294
				    sta->addr, arvif->vdev_id, ret);
5295

M
Marek Puzyniak 已提交
5296
		ath10k_mac_dec_num_stations(arvif, sta);
5297 5298 5299 5300 5301 5302 5303 5304 5305 5306 5307 5308 5309 5310

		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);
		}
5311 5312 5313 5314 5315 5316 5317
	} else if (old_state == IEEE80211_STA_AUTH &&
		   new_state == IEEE80211_STA_ASSOC &&
		   (vif->type == NL80211_IFTYPE_AP ||
		    vif->type == NL80211_IFTYPE_ADHOC)) {
		/*
		 * New association.
		 */
5318
		ath10k_dbg(ar, ATH10K_DBG_MAC, "mac sta %pM associated\n",
K
Kalle Valo 已提交
5319 5320
			   sta->addr);

M
Michal Kazior 已提交
5321
		ret = ath10k_station_assoc(ar, vif, sta, false);
5322
		if (ret)
5323
			ath10k_warn(ar, "failed to associate station %pM for vdev %i: %i\n",
5324
				    sta->addr, arvif->vdev_id, ret);
5325
	} else if (old_state == IEEE80211_STA_ASSOC &&
5326 5327 5328 5329 5330 5331 5332 5333 5334 5335 5336 5337 5338 5339 5340 5341 5342 5343 5344 5345 5346 5347 5348 5349
		   new_state == IEEE80211_STA_AUTHORIZED &&
		   sta->tdls) {
		/*
		 * Tdls station authorized.
		 */
		ath10k_dbg(ar, ATH10K_DBG_MAC, "mac tdls sta %pM authorized\n",
			   sta->addr);

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

		ret = ath10k_mac_tdls_peer_update(ar, arvif->vdev_id, sta,
						  WMI_TDLS_PEER_STATE_CONNECTED);
		if (ret)
			ath10k_warn(ar, "failed to update tdls peer %pM for vdev %i: %i\n",
				    sta->addr, arvif->vdev_id, ret);
	} else if (old_state == IEEE80211_STA_ASSOC &&
		    new_state == IEEE80211_STA_AUTH &&
		    (vif->type == NL80211_IFTYPE_AP ||
		     vif->type == NL80211_IFTYPE_ADHOC)) {
5350 5351 5352
		/*
		 * Disassociation.
		 */
5353
		ath10k_dbg(ar, ATH10K_DBG_MAC, "mac sta %pM disassociated\n",
K
Kalle Valo 已提交
5354 5355
			   sta->addr);

M
Michal Kazior 已提交
5356
		ret = ath10k_station_disassoc(ar, vif, sta);
5357
		if (ret)
5358
			ath10k_warn(ar, "failed to disassociate station: %pM vdev %i: %i\n",
5359
				    sta->addr, arvif->vdev_id, ret);
5360
	}
5361
exit:
5362 5363 5364 5365 5366
	mutex_unlock(&ar->conf_mutex);
	return ret;
}

static int ath10k_conf_tx_uapsd(struct ath10k *ar, struct ieee80211_vif *vif,
5367
				u16 ac, bool enable)
5368 5369
{
	struct ath10k_vif *arvif = ath10k_vif_to_arvif(vif);
5370 5371
	struct wmi_sta_uapsd_auto_trig_arg arg = {};
	u32 prio = 0, acc = 0;
5372 5373 5374
	u32 value = 0;
	int ret = 0;

M
Michal Kazior 已提交
5375 5376
	lockdep_assert_held(&ar->conf_mutex);

5377 5378 5379 5380 5381 5382 5383
	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;
5384 5385
		prio = 7;
		acc = 3;
5386 5387 5388 5389
		break;
	case IEEE80211_AC_VI:
		value = WMI_STA_PS_UAPSD_AC2_DELIVERY_EN |
			WMI_STA_PS_UAPSD_AC2_TRIGGER_EN;
5390 5391
		prio = 5;
		acc = 2;
5392 5393 5394 5395
		break;
	case IEEE80211_AC_BE:
		value = WMI_STA_PS_UAPSD_AC1_DELIVERY_EN |
			WMI_STA_PS_UAPSD_AC1_TRIGGER_EN;
5396 5397
		prio = 2;
		acc = 1;
5398 5399 5400 5401
		break;
	case IEEE80211_AC_BK:
		value = WMI_STA_PS_UAPSD_AC0_DELIVERY_EN |
			WMI_STA_PS_UAPSD_AC0_TRIGGER_EN;
5402 5403
		prio = 0;
		acc = 0;
5404 5405 5406 5407 5408 5409 5410 5411 5412 5413 5414 5415
		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) {
5416
		ath10k_warn(ar, "failed to set uapsd params: %d\n", ret);
5417 5418 5419 5420 5421 5422 5423 5424 5425 5426 5427 5428
		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)
5429
		ath10k_warn(ar, "failed to set rx wake param: %d\n", ret);
5430

M
Michal Kazior 已提交
5431 5432 5433 5434 5435 5436 5437 5438 5439 5440 5441 5442 5443 5444
	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;
	}

5445 5446 5447 5448 5449 5450 5451 5452 5453 5454 5455 5456 5457 5458 5459 5460 5461 5462 5463 5464 5465 5466 5467
	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;
		}
	}

5468 5469 5470 5471 5472 5473 5474 5475 5476
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;
5477
	struct ath10k_vif *arvif = ath10k_vif_to_arvif(vif);
5478 5479 5480 5481 5482 5483 5484
	struct wmi_wmm_params_arg *p = NULL;
	int ret;

	mutex_lock(&ar->conf_mutex);

	switch (ac) {
	case IEEE80211_AC_VO:
5485
		p = &arvif->wmm_params.ac_vo;
5486 5487
		break;
	case IEEE80211_AC_VI:
5488
		p = &arvif->wmm_params.ac_vi;
5489 5490
		break;
	case IEEE80211_AC_BE:
5491
		p = &arvif->wmm_params.ac_be;
5492 5493
		break;
	case IEEE80211_AC_BK:
5494
		p = &arvif->wmm_params.ac_bk;
5495 5496 5497 5498 5499 5500 5501 5502 5503 5504 5505 5506 5507 5508 5509 5510 5511 5512 5513
		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;

5514 5515 5516 5517 5518 5519 5520 5521 5522 5523 5524 5525 5526 5527 5528 5529 5530
	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;
		}
5531 5532 5533 5534
	}

	ret = ath10k_conf_tx_uapsd(ar, vif, ac, params->uapsd);
	if (ret)
5535
		ath10k_warn(ar, "failed to set sta uapsd: %d\n", ret);
5536 5537 5538 5539 5540 5541 5542 5543 5544 5545 5546 5547 5548 5549 5550 5551 5552

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

#define ATH10K_ROC_TIMEOUT_HZ (2*HZ)

static int ath10k_remain_on_channel(struct ieee80211_hw *hw,
				    struct ieee80211_vif *vif,
				    struct ieee80211_channel *chan,
				    int duration,
				    enum ieee80211_roc_type type)
{
	struct ath10k *ar = hw->priv;
	struct ath10k_vif *arvif = ath10k_vif_to_arvif(vif);
	struct wmi_start_scan_arg arg;
5553
	int ret = 0;
M
Michal Kazior 已提交
5554
	u32 scan_time_msec;
5555 5556 5557 5558

	mutex_lock(&ar->conf_mutex);

	spin_lock_bh(&ar->data_lock);
5559 5560 5561 5562 5563 5564 5565 5566 5567
	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;
5568
		ar->scan.roc_notify = true;
5569 5570 5571 5572 5573
		ret = 0;
		break;
	case ATH10K_SCAN_STARTING:
	case ATH10K_SCAN_RUNNING:
	case ATH10K_SCAN_ABORTING:
5574
		ret = -EBUSY;
5575
		break;
5576 5577 5578
	}
	spin_unlock_bh(&ar->data_lock);

5579 5580 5581
	if (ret)
		goto exit;

M
Michal Kazior 已提交
5582
	scan_time_msec = ar->hw->wiphy->max_remain_on_channel_duration * 2;
M
Michal Kazior 已提交
5583

5584 5585 5586 5587 5588 5589
	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
5590 5591 5592
	arg.dwell_time_active = scan_time_msec;
	arg.dwell_time_passive = scan_time_msec;
	arg.max_scan_time = scan_time_msec;
5593 5594
	arg.scan_ctrl_flags |= WMI_SCAN_FLAG_PASSIVE;
	arg.scan_ctrl_flags |= WMI_SCAN_FILTER_PROBE_REQ;
5595
	arg.burst_duration_ms = duration;
5596 5597 5598

	ret = ath10k_start_scan(ar, &arg);
	if (ret) {
5599
		ath10k_warn(ar, "failed to start roc scan: %d\n", ret);
5600
		spin_lock_bh(&ar->data_lock);
5601
		ar->scan.state = ATH10K_SCAN_IDLE;
5602 5603 5604 5605 5606 5607
		spin_unlock_bh(&ar->data_lock);
		goto exit;
	}

	ret = wait_for_completion_timeout(&ar->scan.on_channel, 3*HZ);
	if (ret == 0) {
5608
		ath10k_warn(ar, "failed to switch to channel for roc scan\n");
5609 5610 5611

		ret = ath10k_scan_stop(ar);
		if (ret)
5612
			ath10k_warn(ar, "failed to stop scan: %d\n", ret);
5613

5614 5615 5616 5617
		ret = -ETIMEDOUT;
		goto exit;
	}

M
Michal Kazior 已提交
5618 5619 5620
	ieee80211_queue_delayed_work(ar->hw, &ar->scan.timeout,
				     msecs_to_jiffies(duration));

5621 5622 5623 5624 5625 5626 5627 5628 5629 5630 5631
	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);
5632 5633 5634 5635 5636

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

5637
	ath10k_scan_abort(ar);
5638

5639 5640
	mutex_unlock(&ar->conf_mutex);

5641 5642
	cancel_delayed_work_sync(&ar->scan.timeout);

5643 5644 5645 5646 5647 5648 5649 5650
	return 0;
}

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

5651 5652 5653 5654 5655
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
5656

5657
	mutex_lock(&ar->conf_mutex);
5658
	list_for_each_entry(arvif, &ar->arvifs, list) {
5659
		ath10k_dbg(ar, ATH10K_DBG_MAC, "mac vdev %d rts threshold %d\n",
5660 5661 5662 5663
			   arvif->vdev_id, value);

		ret = ath10k_mac_set_rts(arvif, value);
		if (ret) {
5664
			ath10k_warn(ar, "failed to set rts threshold for vdev %d: %d\n",
5665 5666 5667 5668
				    arvif->vdev_id, ret);
			break;
		}
	}
5669 5670
	mutex_unlock(&ar->conf_mutex);

5671
	return ret;
5672 5673
}

5674 5675 5676 5677 5678 5679 5680 5681 5682 5683 5684 5685 5686 5687 5688
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;
}

5689 5690
static void ath10k_flush(struct ieee80211_hw *hw, struct ieee80211_vif *vif,
			 u32 queues, bool drop)
5691 5692
{
	struct ath10k *ar = hw->priv;
5693
	bool skip;
5694
	long time_left;
5695 5696 5697 5698 5699 5700

	/* 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
5701 5702
	mutex_lock(&ar->conf_mutex);

5703 5704 5705
	if (ar->state == ATH10K_STATE_WEDGED)
		goto skip;

5706
	time_left = wait_event_timeout(ar->htt.empty_tx_wq, ({
5707
			bool empty;
5708

5709
			spin_lock_bh(&ar->htt.tx_lock);
5710
			empty = (ar->htt.num_pending_tx == 0);
5711
			spin_unlock_bh(&ar->htt.tx_lock);
5712

M
Michal Kazior 已提交
5713 5714 5715
			skip = (ar->state == ATH10K_STATE_WEDGED) ||
			       test_bit(ATH10K_FLAG_CRASH_FLUSH,
					&ar->dev_flags);
5716 5717

			(empty || skip);
5718
		}), ATH10K_FLUSH_TIMEOUT_HZ);
5719

5720 5721 5722
	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
5723

5724
skip:
M
Michal Kazior 已提交
5725
	mutex_unlock(&ar->conf_mutex);
5726 5727 5728 5729 5730 5731 5732 5733 5734 5735 5736
}

/* 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;
}

5737 5738
static void ath10k_reconfig_complete(struct ieee80211_hw *hw,
				     enum ieee80211_reconfig_type reconfig_type)
5739 5740 5741
{
	struct ath10k *ar = hw->priv;

5742 5743 5744
	if (reconfig_type != IEEE80211_RECONFIG_TYPE_RESTART)
		return;

5745 5746 5747 5748 5749
	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) {
5750
		ath10k_info(ar, "device successfully recovered\n");
5751
		ar->state = ATH10K_STATE_ON;
M
Michal Kazior 已提交
5752
		ieee80211_wake_queues(ar->hw);
5753 5754 5755 5756 5757
	}

	mutex_unlock(&ar->conf_mutex);
}

M
Michal Kazior 已提交
5758 5759 5760 5761 5762 5763 5764 5765 5766 5767 5768 5769 5770 5771 5772 5773 5774 5775 5776 5777 5778 5779 5780 5781 5782 5783 5784 5785 5786 5787
static int ath10k_get_survey(struct ieee80211_hw *hw, int idx,
			     struct survey_info *survey)
{
	struct ath10k *ar = hw->priv;
	struct ieee80211_supported_band *sband;
	struct survey_info *ar_survey = &ar->survey[idx];
	int ret = 0;

	mutex_lock(&ar->conf_mutex);

	sband = hw->wiphy->bands[IEEE80211_BAND_2GHZ];
	if (sband && idx >= sband->n_channels) {
		idx -= sband->n_channels;
		sband = NULL;
	}

	if (!sband)
		sband = hw->wiphy->bands[IEEE80211_BAND_5GHZ];

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

	spin_lock_bh(&ar->data_lock);
	memcpy(survey, ar_survey, sizeof(*survey));
	spin_unlock_bh(&ar->data_lock);

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

5788 5789 5790
	if (ar->rx_channel == survey->channel)
		survey->filled |= SURVEY_INFO_IN_USE;

M
Michal Kazior 已提交
5791 5792 5793 5794 5795
exit:
	mutex_unlock(&ar->conf_mutex);
	return ret;
}

5796
static bool
5797 5798 5799
ath10k_mac_bitrate_mask_has_single_rate(struct ath10k *ar,
					enum ieee80211_band band,
					const struct cfg80211_bitrate_mask *mask)
5800
{
5801 5802
	int num_rates = 0;
	int i;
5803

5804
	num_rates += hweight32(mask->control[band].legacy);
5805

5806 5807
	for (i = 0; i < ARRAY_SIZE(mask->control[band].ht_mcs); i++)
		num_rates += hweight8(mask->control[band].ht_mcs[i]);
5808

5809 5810
	for (i = 0; i < ARRAY_SIZE(mask->control[band].vht_mcs); i++)
		num_rates += hweight16(mask->control[band].vht_mcs[i]);
5811

5812
	return num_rates == 1;
5813 5814 5815
}

static bool
5816 5817 5818 5819 5820 5821 5822 5823 5824 5825
ath10k_mac_bitrate_mask_get_single_nss(struct ath10k *ar,
				       enum ieee80211_band band,
				       const struct cfg80211_bitrate_mask *mask,
				       int *nss)
{
	struct ieee80211_supported_band *sband = &ar->mac.sbands[band];
	u16 vht_mcs_map = le16_to_cpu(sband->vht_cap.vht_mcs.tx_mcs_map);
	u8 ht_nss_mask = 0;
	u8 vht_nss_mask = 0;
	int i;
5826

5827
	if (mask->control[band].legacy)
5828 5829
		return false;

5830 5831
	for (i = 0; i < ARRAY_SIZE(mask->control[band].ht_mcs); i++) {
		if (mask->control[band].ht_mcs[i] == 0)
5832
			continue;
5833 5834 5835 5836 5837
		else if (mask->control[band].ht_mcs[i] ==
			 sband->ht_cap.mcs.rx_mask[i])
			ht_nss_mask |= BIT(i);
		else
			return false;
5838 5839
	}

5840 5841
	for (i = 0; i < ARRAY_SIZE(mask->control[band].vht_mcs); i++) {
		if (mask->control[band].vht_mcs[i] == 0)
5842
			continue;
5843 5844 5845 5846 5847
		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;
5848 5849
	}

5850
	if (ht_nss_mask != vht_nss_mask)
5851 5852
		return false;

5853
	if (ht_nss_mask == 0)
5854 5855
		return false;

5856
	if (BIT(fls(ht_nss_mask)) - 1 != ht_nss_mask)
5857 5858
		return false;

5859
	*nss = fls(ht_nss_mask);
5860 5861 5862 5863

	return true;
}

5864 5865 5866 5867 5868
static int
ath10k_mac_bitrate_mask_get_single_rate(struct ath10k *ar,
					enum ieee80211_band band,
					const struct cfg80211_bitrate_mask *mask,
					u8 *rate, u8 *nss)
5869
{
5870 5871 5872 5873 5874 5875
	struct ieee80211_supported_band *sband = &ar->mac.sbands[band];
	int rate_idx;
	int i;
	u16 bitrate;
	u8 preamble;
	u8 hw_rate;
5876

5877 5878
	if (hweight32(mask->control[band].legacy) == 1) {
		rate_idx = ffs(mask->control[band].legacy) - 1;
5879

5880 5881
		hw_rate = sband->bitrates[rate_idx].hw_value;
		bitrate = sband->bitrates[rate_idx].bitrate;
5882

5883 5884 5885 5886
		if (ath10k_mac_bitrate_is_cck(bitrate))
			preamble = WMI_RATE_PREAMBLE_CCK;
		else
			preamble = WMI_RATE_PREAMBLE_OFDM;
5887

5888 5889 5890 5891
		*nss = 1;
		*rate = preamble << 6 |
			(*nss - 1) << 4 |
			hw_rate << 0;
5892

5893
		return 0;
5894 5895
	}

5896 5897 5898 5899 5900 5901
	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);
5902

5903 5904 5905
			return 0;
		}
	}
5906

5907 5908 5909 5910 5911 5912
	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);
5913

5914 5915 5916
			return 0;
		}
	}
5917

5918
	return -EINVAL;
5919 5920
}

5921 5922
static int ath10k_mac_set_fixed_rate_params(struct ath10k_vif *arvif,
					    u8 rate, u8 nss, u8 sgi)
5923 5924 5925
{
	struct ath10k *ar = arvif->ar;
	u32 vdev_param;
5926
	int ret;
5927

5928
	lockdep_assert_held(&ar->conf_mutex);
5929

5930 5931
	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);
5932

5933
	vdev_param = ar->wmi.vdev_param->fixed_rate;
5934
	ret = ath10k_wmi_vdev_set_param(ar, arvif->vdev_id, vdev_param, rate);
5935
	if (ret) {
5936
		ath10k_warn(ar, "failed to set fixed rate param 0x%02x: %d\n",
5937 5938
			    rate, ret);
		return ret;
5939 5940 5941
	}

	vdev_param = ar->wmi.vdev_param->nss;
5942
	ret = ath10k_wmi_vdev_set_param(ar, arvif->vdev_id, vdev_param, nss);
5943
	if (ret) {
5944 5945
		ath10k_warn(ar, "failed to set nss param %d: %d\n", nss, ret);
		return ret;
5946 5947
	}

5948
	vdev_param = ar->wmi.vdev_param->sgi;
5949
	ret = ath10k_wmi_vdev_set_param(ar, arvif->vdev_id, vdev_param, sgi);
5950
	if (ret) {
5951 5952
		ath10k_warn(ar, "failed to set sgi param %d: %d\n", sgi, ret);
		return ret;
5953 5954
	}

5955
	return 0;
5956 5957
}

5958 5959 5960 5961 5962 5963 5964
static bool
ath10k_mac_can_set_bitrate_mask(struct ath10k *ar,
				enum ieee80211_band band,
				const struct cfg80211_bitrate_mask *mask)
{
	int i;
	u16 vht_mcs;
5965

5966 5967 5968 5969 5970 5971 5972 5973 5974 5975 5976 5977 5978 5979 5980 5981 5982
	/* 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;
		}
5983 5984
	}

5985 5986
	return true;
}
5987

5988 5989 5990 5991 5992 5993 5994 5995 5996 5997 5998 5999 6000 6001 6002
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);
6003 6004
}

6005 6006 6007
static int ath10k_mac_op_set_bitrate_mask(struct ieee80211_hw *hw,
					  struct ieee80211_vif *vif,
					  const struct cfg80211_bitrate_mask *mask)
6008 6009
{
	struct ath10k_vif *arvif = ath10k_vif_to_arvif(vif);
M
Michal Kazior 已提交
6010
	struct cfg80211_chan_def def;
6011
	struct ath10k *ar = arvif->ar;
M
Michal Kazior 已提交
6012
	enum ieee80211_band band;
6013 6014
	const u8 *ht_mcs_mask;
	const u16 *vht_mcs_mask;
6015 6016 6017 6018 6019
	u8 rate;
	u8 nss;
	u8 sgi;
	int single_nss;
	int ret;
6020

M
Michal Kazior 已提交
6021 6022
	if (ath10k_mac_vif_chan(vif, &def))
		return -EPERM;
6023

M
Michal Kazior 已提交
6024
	band = def.chan->band;
6025 6026
	ht_mcs_mask = mask->control[band].ht_mcs;
	vht_mcs_mask = mask->control[band].vht_mcs;
6027

6028 6029
	sgi = mask->control[band].gi;
	if (sgi == NL80211_TXRATE_FORCE_LGI)
6030
		return -EINVAL;
6031

6032 6033 6034 6035 6036 6037 6038 6039 6040 6041 6042 6043 6044 6045
	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;
6046 6047 6048 6049 6050
		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))
6051
			return -EINVAL;
6052 6053 6054 6055 6056 6057 6058 6059 6060

		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);
6061 6062
	}

6063 6064 6065 6066 6067 6068 6069
	mutex_lock(&ar->conf_mutex);

	ret = ath10k_mac_set_fixed_rate_params(arvif, rate, nss, sgi);
	if (ret) {
		ath10k_warn(ar, "failed to set fixed rate params on vdev %i: %d\n",
			    arvif->vdev_id, ret);
		goto exit;
6070 6071
	}

6072 6073 6074 6075
exit:
	mutex_unlock(&ar->conf_mutex);

	return ret;
6076 6077
}

6078 6079 6080 6081 6082 6083 6084 6085 6086 6087 6088
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);

6089
	ath10k_dbg(ar, ATH10K_DBG_MAC,
6090 6091 6092 6093 6094 6095 6096 6097 6098 6099 6100 6101 6102 6103 6104 6105 6106 6107
		   "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:
6108
			ath10k_warn(ar, "Invalid bandwidth %d in rc update for %pM\n",
6109
				    sta->bandwidth, sta->addr);
6110 6111 6112 6113 6114 6115 6116 6117 6118 6119 6120 6121 6122 6123 6124 6125 6126 6127 6128 6129 6130 6131 6132 6133 6134
			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:
6135
			ath10k_warn(ar, "Invalid smps %d in sta rc update for %pM\n",
6136
				    sta->smps_mode, sta->addr);
6137 6138 6139 6140 6141 6142 6143 6144 6145 6146 6147 6148 6149 6150
			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);
}

6151 6152 6153 6154 6155 6156 6157 6158 6159 6160
static u64 ath10k_get_tsf(struct ieee80211_hw *hw, struct ieee80211_vif *vif)
{
	/*
	 * FIXME: Return 0 for time being. Need to figure out whether FW
	 * has the API to fetch 64-bit local TSF
	 */

	return 0;
}

6161 6162 6163 6164 6165 6166
static int ath10k_ampdu_action(struct ieee80211_hw *hw,
			       struct ieee80211_vif *vif,
			       enum ieee80211_ampdu_mlme_action action,
			       struct ieee80211_sta *sta, u16 tid, u16 *ssn,
			       u8 buf_size)
{
6167
	struct ath10k *ar = hw->priv;
6168 6169
	struct ath10k_vif *arvif = ath10k_vif_to_arvif(vif);

6170
	ath10k_dbg(ar, ATH10K_DBG_MAC, "mac ampdu vdev_id %i sta %pM tid %hu action %d\n",
6171 6172 6173 6174 6175 6176 6177 6178 6179 6180 6181 6182 6183 6184 6185 6186 6187 6188 6189 6190 6191 6192 6193
		   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
6194
static void
6195 6196 6197 6198
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
6199 6200 6201 6202 6203 6204 6205 6206 6207
{
	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);

6208 6209 6210
	WARN_ON(ctx && vifs);
	WARN_ON(vifs && n_vifs != 1);

M
Michal Kazior 已提交
6211 6212 6213 6214 6215 6216 6217 6218 6219 6220 6221
	/* 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();
6222
	if (!ctx && ath10k_mac_num_chanctxs(ar) == 1) {
M
Michal Kazior 已提交
6223 6224 6225
		ieee80211_iter_chan_contexts_atomic(ar->hw,
					ath10k_mac_get_any_chandef_iter,
					&def);
6226 6227 6228 6229

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

M
Michal Kazior 已提交
6230
		ar->rx_channel = def->chan;
6231 6232
	} else if (ctx && ath10k_mac_num_chanctxs(ar) == 0) {
		ar->rx_channel = ctx->def.chan;
M
Michal Kazior 已提交
6233 6234 6235 6236 6237 6238 6239 6240 6241 6242 6243 6244 6245 6246 6247 6248 6249 6250 6251
	} else {
		ar->rx_channel = NULL;
	}
	rcu_read_unlock();
}

static int
ath10k_mac_op_add_chanctx(struct ieee80211_hw *hw,
			  struct ieee80211_chanctx_conf *ctx)
{
	struct ath10k *ar = hw->priv;

	ath10k_dbg(ar, ATH10K_DBG_MAC,
		   "mac chanctx add freq %hu width %d ptr %p\n",
		   ctx->def.chan->center_freq, ctx->def.width, ctx);

	mutex_lock(&ar->conf_mutex);

	spin_lock_bh(&ar->data_lock);
6252
	ath10k_mac_update_rx_channel(ar, ctx, NULL, 0);
M
Michal Kazior 已提交
6253 6254 6255 6256 6257 6258 6259 6260 6261 6262 6263 6264 6265 6266 6267 6268 6269 6270 6271 6272 6273 6274 6275
	spin_unlock_bh(&ar->data_lock);

	ath10k_recalc_radar_detection(ar);
	ath10k_monitor_recalc(ar);

	mutex_unlock(&ar->conf_mutex);

	return 0;
}

static void
ath10k_mac_op_remove_chanctx(struct ieee80211_hw *hw,
			     struct ieee80211_chanctx_conf *ctx)
{
	struct ath10k *ar = hw->priv;

	ath10k_dbg(ar, ATH10K_DBG_MAC,
		   "mac chanctx remove freq %hu width %d ptr %p\n",
		   ctx->def.chan->center_freq, ctx->def.width, ctx);

	mutex_lock(&ar->conf_mutex);

	spin_lock_bh(&ar->data_lock);
6276
	ath10k_mac_update_rx_channel(ar, NULL, NULL, 0);
M
Michal Kazior 已提交
6277 6278 6279 6280 6281 6282 6283 6284 6285 6286 6287 6288 6289 6290 6291 6292 6293 6294
	spin_unlock_bh(&ar->data_lock);

	ath10k_recalc_radar_detection(ar);
	ath10k_monitor_recalc(ar);

	mutex_unlock(&ar->conf_mutex);
}

static void
ath10k_mac_op_change_chanctx(struct ieee80211_hw *hw,
			     struct ieee80211_chanctx_conf *ctx,
			     u32 changed)
{
	struct ath10k *ar = hw->priv;

	mutex_lock(&ar->conf_mutex);

	ath10k_dbg(ar, ATH10K_DBG_MAC,
6295 6296
		   "mac chanctx change freq %hu width %d ptr %p changed %x\n",
		   ctx->def.chan->center_freq, ctx->def.width, ctx, changed);
M
Michal Kazior 已提交
6297 6298 6299 6300 6301 6302 6303 6304 6305 6306 6307 6308 6309 6310 6311 6312 6313 6314 6315 6316 6317 6318 6319 6320 6321 6322 6323 6324 6325 6326 6327 6328 6329 6330 6331 6332 6333 6334 6335 6336

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

	ath10k_recalc_radar_detection(ar);

	/* FIXME: How to configure Rx chains properly? */

	/* No other actions are actually necessary. Firmware maintains channel
	 * definitions per vdev internally and there's no host-side channel
	 * context abstraction to configure, e.g. channel width.
	 */

unlock:
	mutex_unlock(&ar->conf_mutex);
}

static int
ath10k_mac_op_assign_vif_chanctx(struct ieee80211_hw *hw,
				 struct ieee80211_vif *vif,
				 struct ieee80211_chanctx_conf *ctx)
{
	struct ath10k *ar = hw->priv;
	struct ath10k_vif *arvif = (void *)vif->drv_priv;
	int ret;

	mutex_lock(&ar->conf_mutex);

	ath10k_dbg(ar, ATH10K_DBG_MAC,
		   "mac chanctx assign ptr %p vdev_id %i\n",
		   ctx, arvif->vdev_id);

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

6337
	ret = ath10k_vdev_start(arvif, &ctx->def);
M
Michal Kazior 已提交
6338 6339 6340
	if (ret) {
		ath10k_warn(ar, "failed to start vdev %i addr %pM on freq %d: %d\n",
			    arvif->vdev_id, vif->addr,
6341
			    ctx->def.chan->center_freq, ret);
M
Michal Kazior 已提交
6342 6343 6344 6345 6346
		goto err;
	}

	arvif->is_started = true;

6347 6348 6349 6350 6351 6352 6353
	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
6354 6355 6356 6357 6358 6359 6360 6361 6362 6363 6364 6365 6366 6367 6368 6369 6370
	if (vif->type == NL80211_IFTYPE_MONITOR) {
		ret = ath10k_wmi_vdev_up(ar, arvif->vdev_id, 0, vif->addr);
		if (ret) {
			ath10k_warn(ar, "failed to up monitor vdev %i: %d\n",
				    arvif->vdev_id, ret);
			goto err_stop;
		}

		arvif->is_up = true;
	}

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

err_stop:
	ath10k_vdev_stop(arvif);
	arvif->is_started = false;
6371
	ath10k_mac_vif_setup_ps(arvif);
M
Michal Kazior 已提交
6372 6373 6374 6375 6376 6377 6378 6379 6380 6381 6382 6383 6384 6385 6386 6387 6388 6389 6390 6391 6392 6393 6394 6395 6396 6397 6398 6399 6400 6401 6402 6403 6404 6405 6406 6407 6408 6409 6410 6411 6412 6413 6414 6415 6416 6417 6418 6419 6420 6421 6422 6423

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

static void
ath10k_mac_op_unassign_vif_chanctx(struct ieee80211_hw *hw,
				   struct ieee80211_vif *vif,
				   struct ieee80211_chanctx_conf *ctx)
{
	struct ath10k *ar = hw->priv;
	struct ath10k_vif *arvif = (void *)vif->drv_priv;
	int ret;

	mutex_lock(&ar->conf_mutex);

	ath10k_dbg(ar, ATH10K_DBG_MAC,
		   "mac chanctx unassign ptr %p vdev_id %i\n",
		   ctx, arvif->vdev_id);

	WARN_ON(!arvif->is_started);

	if (vif->type == NL80211_IFTYPE_MONITOR) {
		WARN_ON(!arvif->is_up);

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

		arvif->is_up = false;
	}

	ret = ath10k_vdev_stop(arvif);
	if (ret)
		ath10k_warn(ar, "failed to stop vdev %i: %d\n",
			    arvif->vdev_id, ret);

	arvif->is_started = false;

	mutex_unlock(&ar->conf_mutex);
}

static int
ath10k_mac_op_switch_vif_chanctx(struct ieee80211_hw *hw,
				 struct ieee80211_vif_chanctx_switch *vifs,
				 int n_vifs,
				 enum ieee80211_chanctx_switch_mode mode)
{
	struct ath10k *ar = hw->priv;
	struct ath10k_vif *arvif;
M
Michal Kazior 已提交
6424
	int ret;
M
Michal Kazior 已提交
6425 6426 6427 6428 6429 6430 6431 6432
	int i;

	mutex_lock(&ar->conf_mutex);

	ath10k_dbg(ar, ATH10K_DBG_MAC,
		   "mac chanctx switch n_vifs %d mode %d\n",
		   n_vifs, mode);

M
Michal Kazior 已提交
6433 6434 6435 6436 6437 6438
	/* First stop monitor interface. Some FW versions crash if there's a
	 * lone monitor interface.
	 */
	if (ar->monitor_started)
		ath10k_monitor_stop(ar);

M
Michal Kazior 已提交
6439 6440 6441 6442
	for (i = 0; i < n_vifs; i++) {
		arvif = ath10k_vif_to_arvif(vifs[i].vif);

		ath10k_dbg(ar, ATH10K_DBG_MAC,
6443
			   "mac chanctx switch vdev_id %i freq %hu->%hu width %d->%d\n",
M
Michal Kazior 已提交
6444 6445 6446 6447
			   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,
6448
			   vifs[i].new_ctx->def.width);
M
Michal Kazior 已提交
6449

M
Michal Kazior 已提交
6450 6451
		if (WARN_ON(!arvif->is_started))
			continue;
M
Michal Kazior 已提交
6452

M
Michal Kazior 已提交
6453 6454
		if (WARN_ON(!arvif->is_up))
			continue;
M
Michal Kazior 已提交
6455

M
Michal Kazior 已提交
6456 6457 6458 6459 6460 6461
		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;
		}
M
Michal Kazior 已提交
6462
	}
M
Michal Kazior 已提交
6463 6464 6465 6466 6467 6468

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

	spin_lock_bh(&ar->data_lock);
6469
	ath10k_mac_update_rx_channel(ar, NULL, vifs, n_vifs);
M
Michal Kazior 已提交
6470 6471
	spin_unlock_bh(&ar->data_lock);

M
Michal Kazior 已提交
6472 6473 6474 6475 6476 6477 6478 6479 6480 6481 6482 6483 6484 6485 6486 6487 6488 6489 6490 6491 6492 6493 6494 6495 6496 6497 6498 6499 6500 6501 6502 6503 6504 6505 6506 6507
	for (i = 0; i < n_vifs; i++) {
		arvif = ath10k_vif_to_arvif(vifs[i].vif);

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

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

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

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

		ret = ath10k_vdev_restart(arvif, &vifs[i].new_ctx->def);
		if (ret) {
			ath10k_warn(ar, "failed to restart vdev %d: %d\n",
				    arvif->vdev_id, ret);
			continue;
		}

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

	ath10k_monitor_recalc(ar);
M
Michal Kazior 已提交
6508 6509 6510 6511 6512

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

6513 6514 6515 6516 6517 6518 6519 6520 6521 6522 6523 6524
static const struct ieee80211_ops ath10k_ops = {
	.tx				= ath10k_tx,
	.start				= ath10k_start,
	.stop				= ath10k_stop,
	.config				= ath10k_config,
	.add_interface			= ath10k_add_interface,
	.remove_interface		= ath10k_remove_interface,
	.configure_filter		= ath10k_configure_filter,
	.bss_info_changed		= ath10k_bss_info_changed,
	.hw_scan			= ath10k_hw_scan,
	.cancel_hw_scan			= ath10k_cancel_hw_scan,
	.set_key			= ath10k_set_key,
6525
	.set_default_unicast_key        = ath10k_set_default_unicast_key,
6526 6527 6528 6529 6530
	.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,
6531
	.set_frag_threshold		= ath10k_mac_op_set_frag_threshold,
6532 6533
	.flush				= ath10k_flush,
	.tx_last_beacon			= ath10k_tx_last_beacon,
6534 6535
	.set_antenna			= ath10k_set_antenna,
	.get_antenna			= ath10k_get_antenna,
6536
	.reconfig_complete		= ath10k_reconfig_complete,
M
Michal Kazior 已提交
6537
	.get_survey			= ath10k_get_survey,
6538
	.set_bitrate_mask		= ath10k_mac_op_set_bitrate_mask,
6539
	.sta_rc_update			= ath10k_sta_rc_update,
6540
	.get_tsf			= ath10k_get_tsf,
6541
	.ampdu_action			= ath10k_ampdu_action,
B
Ben Greear 已提交
6542 6543 6544
	.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
6545 6546 6547 6548 6549 6550
	.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,
K
Kalle Valo 已提交
6551 6552 6553

	CFG80211_TESTMODE_CMD(ath10k_tm_cmd)

M
Michal Kazior 已提交
6554
#ifdef CONFIG_PM
6555 6556
	.suspend			= ath10k_wow_op_suspend,
	.resume				= ath10k_wow_op_resume,
M
Michal Kazior 已提交
6557
#endif
6558 6559 6560
#ifdef CONFIG_MAC80211_DEBUGFS
	.sta_add_debugfs		= ath10k_sta_add_debugfs,
#endif
6561 6562 6563 6564 6565 6566 6567 6568 6569 6570 6571 6572 6573 6574 6575 6576 6577 6578 6579 6580 6581 6582 6583 6584 6585 6586 6587 6588 6589 6590 6591 6592 6593 6594 6595 6596 6597 6598
};

#define CHAN2G(_channel, _freq, _flags) { \
	.band			= IEEE80211_BAND_2GHZ, \
	.hw_value		= (_channel), \
	.center_freq		= (_freq), \
	.flags			= (_flags), \
	.max_antenna_gain	= 0, \
	.max_power		= 30, \
}

#define CHAN5G(_channel, _freq, _flags) { \
	.band			= IEEE80211_BAND_5GHZ, \
	.hw_value		= (_channel), \
	.center_freq		= (_freq), \
	.flags			= (_flags), \
	.max_antenna_gain	= 0, \
	.max_power		= 30, \
}

static const struct ieee80211_channel ath10k_2ghz_channels[] = {
	CHAN2G(1, 2412, 0),
	CHAN2G(2, 2417, 0),
	CHAN2G(3, 2422, 0),
	CHAN2G(4, 2427, 0),
	CHAN2G(5, 2432, 0),
	CHAN2G(6, 2437, 0),
	CHAN2G(7, 2442, 0),
	CHAN2G(8, 2447, 0),
	CHAN2G(9, 2452, 0),
	CHAN2G(10, 2457, 0),
	CHAN2G(11, 2462, 0),
	CHAN2G(12, 2467, 0),
	CHAN2G(13, 2472, 0),
	CHAN2G(14, 2484, 0),
};

static const struct ieee80211_channel ath10k_5ghz_channels[] = {
6599 6600 6601 6602 6603 6604 6605 6606 6607 6608 6609 6610 6611 6612 6613 6614 6615 6616 6617
	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),
6618
	CHAN5G(144, 5720, 0),
6619 6620 6621 6622 6623
	CHAN5G(149, 5745, 0),
	CHAN5G(153, 5765, 0),
	CHAN5G(157, 5785, 0),
	CHAN5G(161, 5805, 0),
	CHAN5G(165, 5825, 0),
6624 6625
};

M
Michal Kazior 已提交
6626
struct ath10k *ath10k_mac_create(size_t priv_size)
6627 6628 6629 6630
{
	struct ieee80211_hw *hw;
	struct ath10k *ar;

M
Michal Kazior 已提交
6631
	hw = ieee80211_alloc_hw(sizeof(struct ath10k) + priv_size, &ath10k_ops);
6632 6633 6634 6635 6636 6637 6638 6639 6640 6641 6642 6643 6644 6645 6646 6647 6648 6649 6650
	if (!hw)
		return NULL;

	ar = hw->priv;
	ar->hw = hw;

	return ar;
}

void ath10k_mac_destroy(struct ath10k *ar)
{
	ieee80211_free_hw(ar->hw);
}

static const struct ieee80211_iface_limit ath10k_if_limits[] = {
	{
	.max	= 8,
	.types	= BIT(NL80211_IFTYPE_STATION)
		| BIT(NL80211_IFTYPE_P2P_CLIENT)
6651 6652 6653 6654 6655 6656
	},
	{
	.max	= 3,
	.types	= BIT(NL80211_IFTYPE_P2P_GO)
	},
	{
M
Michal Kazior 已提交
6657 6658 6659 6660
	.max	= 1,
	.types	= BIT(NL80211_IFTYPE_P2P_DEVICE)
	},
	{
6661 6662 6663
	.max	= 7,
	.types	= BIT(NL80211_IFTYPE_AP)
	},
6664 6665
};

6666
static const struct ieee80211_iface_limit ath10k_10x_if_limits[] = {
6667 6668 6669 6670 6671 6672 6673 6674 6675 6676 6677 6678 6679 6680
	{
	.max	= 8,
	.types	= BIT(NL80211_IFTYPE_AP)
	},
};

static const struct ieee80211_iface_combination ath10k_if_comb[] = {
	{
		.limits = ath10k_if_limits,
		.n_limits = ARRAY_SIZE(ath10k_if_limits),
		.max_interfaces = 8,
		.num_different_channels = 1,
		.beacon_int_infra_match = true,
	},
6681 6682 6683
};

static const struct ieee80211_iface_combination ath10k_10x_if_comb[] = {
6684
	{
6685 6686
		.limits = ath10k_10x_if_limits,
		.n_limits = ARRAY_SIZE(ath10k_10x_if_limits),
6687 6688 6689
		.max_interfaces = 8,
		.num_different_channels = 1,
		.beacon_int_infra_match = true,
6690
#ifdef CONFIG_ATH10K_DFS_CERTIFIED
6691 6692 6693 6694 6695
		.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
6696
	},
6697 6698
};

6699 6700 6701
static const struct ieee80211_iface_limit ath10k_tlv_if_limit[] = {
	{
		.max = 2,
6702 6703 6704 6705 6706
		.types = BIT(NL80211_IFTYPE_STATION),
	},
	{
		.max = 2,
		.types = BIT(NL80211_IFTYPE_AP) |
6707 6708 6709 6710 6711 6712 6713 6714 6715
			 BIT(NL80211_IFTYPE_P2P_CLIENT) |
			 BIT(NL80211_IFTYPE_P2P_GO),
	},
	{
		.max = 1,
		.types = BIT(NL80211_IFTYPE_P2P_DEVICE),
	},
};

6716 6717 6718 6719 6720 6721 6722 6723 6724 6725 6726 6727 6728 6729 6730 6731 6732 6733 6734 6735
static const struct ieee80211_iface_limit ath10k_tlv_qcs_if_limit[] = {
	{
		.max = 2,
		.types = BIT(NL80211_IFTYPE_STATION),
	},
	{
		.max = 2,
		.types = BIT(NL80211_IFTYPE_P2P_CLIENT),
	},
	{
		.max = 1,
		.types = BIT(NL80211_IFTYPE_AP) |
			 BIT(NL80211_IFTYPE_P2P_GO),
	},
	{
		.max = 1,
		.types = BIT(NL80211_IFTYPE_P2P_DEVICE),
	},
};

6736 6737 6738 6739 6740 6741 6742 6743 6744 6745 6746 6747 6748 6749 6750 6751 6752 6753
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,
6754
		.max_interfaces = 4,
6755 6756 6757 6758 6759 6760 6761 6762 6763 6764 6765 6766 6767
		.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,
6768 6769
		.num_different_channels = 1,
		.max_interfaces = 4,
6770 6771
		.n_limits = ARRAY_SIZE(ath10k_tlv_if_limit),
	},
6772 6773 6774 6775 6776 6777
	{
		.limits = ath10k_tlv_qcs_if_limit,
		.num_different_channels = 2,
		.max_interfaces = 4,
		.n_limits = ARRAY_SIZE(ath10k_tlv_qcs_if_limit),
	},
6778 6779 6780 6781 6782 6783 6784 6785
	{
		.limits = ath10k_tlv_if_limit_ibss,
		.num_different_channels = 1,
		.max_interfaces = 2,
		.n_limits = ARRAY_SIZE(ath10k_tlv_if_limit_ibss),
	},
};

6786 6787 6788 6789 6790 6791 6792 6793 6794 6795 6796 6797 6798 6799 6800 6801 6802 6803 6804 6805 6806 6807 6808 6809 6810 6811 6812
static const struct ieee80211_iface_limit ath10k_10_4_if_limits[] = {
	{
		.max = 1,
		.types = BIT(NL80211_IFTYPE_STATION),
	},
	{
		.max	= 16,
		.types	= BIT(NL80211_IFTYPE_AP)
	},
};

static const struct ieee80211_iface_combination ath10k_10_4_if_comb[] = {
	{
		.limits = ath10k_10_4_if_limits,
		.n_limits = ARRAY_SIZE(ath10k_10_4_if_limits),
		.max_interfaces = 16,
		.num_different_channels = 1,
		.beacon_int_infra_match = true,
#ifdef CONFIG_ATH10K_DFS_CERTIFIED
		.radar_detect_widths =	BIT(NL80211_CHAN_WIDTH_20_NOHT) |
					BIT(NL80211_CHAN_WIDTH_20) |
					BIT(NL80211_CHAN_WIDTH_40) |
					BIT(NL80211_CHAN_WIDTH_80),
#endif
	},
};

6813 6814 6815 6816
static struct ieee80211_sta_vht_cap ath10k_create_vht_cap(struct ath10k *ar)
{
	struct ieee80211_sta_vht_cap vht_cap = {0};
	u16 mcs_map;
6817
	u32 val;
6818
	int i;
6819 6820 6821 6822

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

6823 6824
	if (ar->vht_cap_info & (IEEE80211_VHT_CAP_SU_BEAMFORMEE_CAPABLE |
				IEEE80211_VHT_CAP_MU_BEAMFORMEE_CAPABLE)) {
6825
		val = ath10k_mac_get_vht_cap_bf_sts(ar);
6826 6827 6828 6829 6830 6831 6832 6833 6834 6835 6836 6837 6838 6839 6840
		val <<= IEEE80211_VHT_CAP_BEAMFORMEE_STS_SHIFT;
		val &= IEEE80211_VHT_CAP_BEAMFORMEE_STS_MASK;

		vht_cap.cap |= val;
	}

	if (ar->vht_cap_info & (IEEE80211_VHT_CAP_SU_BEAMFORMER_CAPABLE |
				IEEE80211_VHT_CAP_MU_BEAMFORMER_CAPABLE)) {
		val = ar->num_rf_chains - 1;
		val <<= IEEE80211_VHT_CAP_SOUNDING_DIMENSIONS_SHIFT;
		val &= IEEE80211_VHT_CAP_SOUNDING_DIMENSIONS_MASK;

		vht_cap.cap |= val;
	}

6841 6842 6843 6844 6845 6846 6847
	mcs_map = 0;
	for (i = 0; i < 8; i++) {
		if (i < ar->num_rf_chains)
			mcs_map |= IEEE80211_VHT_MCS_SUPPORT_0_9 << (i*2);
		else
			mcs_map |= IEEE80211_VHT_MCS_NOT_SUPPORTED << (i*2);
	}
6848 6849 6850 6851 6852 6853 6854 6855 6856 6857 6858 6859 6860 6861 6862 6863 6864 6865 6866 6867 6868 6869 6870 6871 6872 6873 6874 6875 6876 6877 6878 6879 6880 6881 6882 6883 6884 6885 6886 6887 6888 6889 6890 6891 6892 6893 6894 6895 6896 6897 6898 6899 6900 6901 6902 6903 6904 6905 6906 6907 6908 6909

	vht_cap.vht_mcs.rx_mcs_map = cpu_to_le16(mcs_map);
	vht_cap.vht_mcs.tx_mcs_map = cpu_to_le16(mcs_map);

	return vht_cap;
}

static struct ieee80211_sta_ht_cap ath10k_get_ht_cap(struct ath10k *ar)
{
	int i;
	struct ieee80211_sta_ht_cap ht_cap = {0};

	if (!(ar->ht_cap_info & WMI_HT_CAP_ENABLED))
		return ht_cap;

	ht_cap.ht_supported = 1;
	ht_cap.ampdu_factor = IEEE80211_HT_MAX_AMPDU_64K;
	ht_cap.ampdu_density = IEEE80211_HT_MPDU_DENSITY_8;
	ht_cap.cap |= IEEE80211_HT_CAP_SUP_WIDTH_20_40;
	ht_cap.cap |= IEEE80211_HT_CAP_DSSSCCK40;
	ht_cap.cap |= WLAN_HT_CAP_SM_PS_STATIC << IEEE80211_HT_CAP_SM_PS_SHIFT;

	if (ar->ht_cap_info & WMI_HT_CAP_HT20_SGI)
		ht_cap.cap |= IEEE80211_HT_CAP_SGI_20;

	if (ar->ht_cap_info & WMI_HT_CAP_HT40_SGI)
		ht_cap.cap |= IEEE80211_HT_CAP_SGI_40;

	if (ar->ht_cap_info & WMI_HT_CAP_DYNAMIC_SMPS) {
		u32 smps;

		smps   = WLAN_HT_CAP_SM_PS_DYNAMIC;
		smps <<= IEEE80211_HT_CAP_SM_PS_SHIFT;

		ht_cap.cap |= smps;
	}

	if (ar->ht_cap_info & WMI_HT_CAP_TX_STBC)
		ht_cap.cap |= IEEE80211_HT_CAP_TX_STBC;

	if (ar->ht_cap_info & WMI_HT_CAP_RX_STBC) {
		u32 stbc;

		stbc   = ar->ht_cap_info;
		stbc  &= WMI_HT_CAP_RX_STBC;
		stbc >>= WMI_HT_CAP_RX_STBC_MASK_SHIFT;
		stbc <<= IEEE80211_HT_CAP_RX_STBC_SHIFT;
		stbc  &= IEEE80211_HT_CAP_RX_STBC;

		ht_cap.cap |= stbc;
	}

	if (ar->ht_cap_info & WMI_HT_CAP_LDPC)
		ht_cap.cap |= IEEE80211_HT_CAP_LDPC_CODING;

	if (ar->ht_cap_info & WMI_HT_CAP_L_SIG_TXOP_PROT)
		ht_cap.cap |= IEEE80211_HT_CAP_LSIG_TXOP_PROT;

	/* max AMSDU is implicitly taken from vht_cap_info */
	if (ar->vht_cap_info & WMI_VHT_CAP_MAX_MPDU_LEN_MASK)
		ht_cap.cap |= IEEE80211_HT_CAP_MAX_AMSDU;

6910
	for (i = 0; i < ar->num_rf_chains; i++)
6911 6912 6913 6914 6915 6916 6917 6918 6919 6920 6921 6922 6923 6924 6925 6926 6927 6928 6929 6930 6931 6932 6933 6934 6935 6936 6937 6938 6939 6940 6941
		ht_cap.mcs.rx_mask[i] = 0xFF;

	ht_cap.mcs.tx_params |= IEEE80211_HT_MCS_TX_DEFINED;

	return ht_cap;
}

static void ath10k_get_arvif_iter(void *data, u8 *mac,
				  struct ieee80211_vif *vif)
{
	struct ath10k_vif_iter *arvif_iter = data;
	struct ath10k_vif *arvif = ath10k_vif_to_arvif(vif);

	if (arvif->vdev_id == arvif_iter->vdev_id)
		arvif_iter->arvif = arvif;
}

struct ath10k_vif *ath10k_get_arvif(struct ath10k *ar, u32 vdev_id)
{
	struct ath10k_vif_iter arvif_iter;
	u32 flags;

	memset(&arvif_iter, 0, sizeof(struct ath10k_vif_iter));
	arvif_iter.vdev_id = vdev_id;

	flags = IEEE80211_IFACE_ITER_RESUME_ALL;
	ieee80211_iterate_active_interfaces_atomic(ar->hw,
						   flags,
						   ath10k_get_arvif_iter,
						   &arvif_iter);
	if (!arvif_iter.arvif) {
6942
		ath10k_warn(ar, "No VIF found for vdev %d\n", vdev_id);
6943 6944 6945 6946 6947 6948 6949 6950
		return NULL;
	}

	return arvif_iter.arvif;
}

int ath10k_mac_register(struct ath10k *ar)
{
6951 6952 6953 6954 6955 6956 6957
	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,
	};
6958 6959 6960 6961 6962 6963 6964 6965 6966 6967 6968 6969 6970
	struct ieee80211_supported_band *band;
	struct ieee80211_sta_vht_cap vht_cap;
	struct ieee80211_sta_ht_cap ht_cap;
	void *channels;
	int ret;

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

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

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

M
Michal Kazior 已提交
6971 6972 6973 6974
	BUILD_BUG_ON((ARRAY_SIZE(ath10k_2ghz_channels) +
		      ARRAY_SIZE(ath10k_5ghz_channels)) !=
		     ATH10K_NUM_CHANS);

6975 6976 6977 6978
	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
6979 6980 6981 6982
		if (!channels) {
			ret = -ENOMEM;
			goto err_free;
		}
6983 6984 6985 6986 6987 6988 6989 6990

		band = &ar->mac.sbands[IEEE80211_BAND_2GHZ];
		band->n_channels = ARRAY_SIZE(ath10k_2ghz_channels);
		band->channels = channels;
		band->n_bitrates = ath10k_g_rates_size;
		band->bitrates = ath10k_g_rates;
		band->ht_cap = ht_cap;

6991 6992
		/* Enable the VHT support at 2.4 GHz */
		band->vht_cap = vht_cap;
6993 6994 6995 6996 6997 6998 6999 7000 7001

		ar->hw->wiphy->bands[IEEE80211_BAND_2GHZ] = band;
	}

	if (ar->phy_capability & WHAL_WLAN_11A_CAPABILITY) {
		channels = kmemdup(ath10k_5ghz_channels,
				   sizeof(ath10k_5ghz_channels),
				   GFP_KERNEL);
		if (!channels) {
M
Michal Kazior 已提交
7002 7003
			ret = -ENOMEM;
			goto err_free;
7004 7005 7006 7007 7008 7009 7010 7011 7012 7013 7014 7015 7016 7017
		}

		band = &ar->mac.sbands[IEEE80211_BAND_5GHZ];
		band->n_channels = ARRAY_SIZE(ath10k_5ghz_channels);
		band->channels = channels;
		band->n_bitrates = ath10k_a_rates_size;
		band->bitrates = ath10k_a_rates;
		band->ht_cap = ht_cap;
		band->vht_cap = vht_cap;
		ar->hw->wiphy->bands[IEEE80211_BAND_5GHZ] = band;
	}

	ar->hw->wiphy->interface_modes =
		BIT(NL80211_IFTYPE_STATION) |
7018 7019
		BIT(NL80211_IFTYPE_AP);

7020 7021 7022
	ar->hw->wiphy->available_antennas_rx = ar->supp_rx_chainmask;
	ar->hw->wiphy->available_antennas_tx = ar->supp_tx_chainmask;

7023 7024
	if (!test_bit(ATH10K_FW_FEATURE_NO_P2P, ar->fw_features))
		ar->hw->wiphy->interface_modes |=
M
Michal Kazior 已提交
7025
			BIT(NL80211_IFTYPE_P2P_DEVICE) |
7026 7027
			BIT(NL80211_IFTYPE_P2P_CLIENT) |
			BIT(NL80211_IFTYPE_P2P_GO);
7028

7029 7030 7031 7032 7033 7034 7035 7036 7037 7038 7039 7040 7041 7042
	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);
7043

7044 7045 7046
	if (!test_bit(ATH10K_FLAG_RAW_MODE, &ar->dev_flags))
		ieee80211_hw_set(ar->hw, SW_CRYPTO_CONTROL);

7047
	ar->hw->wiphy->features |= NL80211_FEATURE_STATIC_SMPS;
J
Janusz Dziedzic 已提交
7048
	ar->hw->wiphy->flags |= WIPHY_FLAG_IBSS_RSN;
7049

7050
	if (ar->ht_cap_info & WMI_HT_CAP_DYNAMIC_SMPS)
7051
		ar->hw->wiphy->features |= NL80211_FEATURE_DYNAMIC_SMPS;
7052 7053

	if (ar->ht_cap_info & WMI_HT_CAP_ENABLED) {
7054 7055
		ieee80211_hw_set(ar->hw, AMPDU_AGGREGATION);
		ieee80211_hw_set(ar->hw, TX_AMPDU_SETUP_IN_HW);
7056 7057 7058 7059 7060 7061
	}

	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);
7062
	ar->hw->sta_data_size = sizeof(struct ath10k_sta);
7063 7064 7065

	ar->hw->max_listen_interval = ATH10K_MAX_HW_LISTEN_INTERVAL;

7066 7067 7068 7069 7070 7071 7072 7073 7074 7075 7076 7077 7078
	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;
	}

7079 7080 7081
	if (test_bit(WMI_SERVICE_TDLS, ar->wmi.svc_map))
		ar->hw->wiphy->flags |= WIPHY_FLAG_SUPPORTS_TDLS;

7082
	ar->hw->wiphy->flags |= WIPHY_FLAG_HAS_REMAIN_ON_CHANNEL;
M
Michal Kazior 已提交
7083
	ar->hw->wiphy->flags |= WIPHY_FLAG_HAS_CHANNEL_SWITCH;
7084 7085 7086
	ar->hw->wiphy->max_remain_on_channel_duration = 5000;

	ar->hw->wiphy->flags |= WIPHY_FLAG_AP_UAPSD;
7087 7088
	ar->hw->wiphy->features |= NL80211_FEATURE_AP_MODE_CHAN_WIDTH_CHANGE;

7089 7090
	ar->hw->wiphy->max_ap_assoc_sta = ar->max_num_stations;

7091 7092 7093 7094 7095 7096
	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
7097 7098
	wiphy_ext_feature_set(ar->hw->wiphy, NL80211_EXT_FEATURE_VHT_IBSS);

7099 7100 7101 7102
	/*
	 * 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
7103 7104 7105 7106 7107 7108 7109
	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;
7110

7111 7112
	switch (ar->wmi.op_version) {
	case ATH10K_FW_WMI_OP_VERSION_MAIN:
7113 7114 7115
		ar->hw->wiphy->iface_combinations = ath10k_if_comb;
		ar->hw->wiphy->n_iface_combinations =
			ARRAY_SIZE(ath10k_if_comb);
7116
		ar->hw->wiphy->interface_modes |= BIT(NL80211_IFTYPE_ADHOC);
7117
		break;
7118 7119 7120 7121 7122 7123 7124 7125 7126 7127 7128 7129 7130
	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;
7131 7132
	case ATH10K_FW_WMI_OP_VERSION_10_1:
	case ATH10K_FW_WMI_OP_VERSION_10_2:
7133
	case ATH10K_FW_WMI_OP_VERSION_10_2_4:
7134 7135 7136 7137
		ar->hw->wiphy->iface_combinations = ath10k_10x_if_comb;
		ar->hw->wiphy->n_iface_combinations =
			ARRAY_SIZE(ath10k_10x_if_comb);
		break;
7138
	case ATH10K_FW_WMI_OP_VERSION_10_4:
7139 7140 7141
		ar->hw->wiphy->iface_combinations = ath10k_10_4_if_comb;
		ar->hw->wiphy->n_iface_combinations =
			ARRAY_SIZE(ath10k_10_4_if_comb);
7142
		break;
7143 7144 7145 7146 7147
	case ATH10K_FW_WMI_OP_VERSION_UNSET:
	case ATH10K_FW_WMI_OP_VERSION_MAX:
		WARN_ON(1);
		ret = -EINVAL;
		goto err_free;
7148
	}
7149

7150 7151
	if (!test_bit(ATH10K_FLAG_RAW_MODE, &ar->dev_flags))
		ar->hw->netdev_features = NETIF_F_HW_CSUM;
7152

J
Janusz Dziedzic 已提交
7153 7154 7155 7156 7157 7158 7159
	if (config_enabled(CONFIG_ATH10K_DFS_CERTIFIED)) {
		/* Init ath dfs pattern detector */
		ar->ath_common.debug_mask = ATH_DBG_DFS;
		ar->dfs_detector = dfs_pattern_detector_init(&ar->ath_common,
							     NL80211_DFS_UNSET);

		if (!ar->dfs_detector)
7160
			ath10k_warn(ar, "failed to initialise DFS pattern detector\n");
J
Janusz Dziedzic 已提交
7161 7162
	}

7163 7164 7165
	ret = ath_regd_init(&ar->ath_common.regulatory, ar->hw->wiphy,
			    ath10k_reg_notifier);
	if (ret) {
7166
		ath10k_err(ar, "failed to initialise regulatory: %i\n", ret);
M
Michal Kazior 已提交
7167
		goto err_free;
7168 7169
	}

7170 7171 7172
	ar->hw->wiphy->cipher_suites = cipher_suites;
	ar->hw->wiphy->n_cipher_suites = ARRAY_SIZE(cipher_suites);

7173 7174
	ret = ieee80211_register_hw(ar->hw);
	if (ret) {
7175
		ath10k_err(ar, "failed to register ieee80211: %d\n", ret);
M
Michal Kazior 已提交
7176
		goto err_free;
7177 7178 7179 7180 7181 7182
	}

	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
7183
			goto err_unregister;
7184 7185 7186
	}

	return 0;
M
Michal Kazior 已提交
7187 7188

err_unregister:
7189
	ieee80211_unregister_hw(ar->hw);
M
Michal Kazior 已提交
7190 7191 7192 7193
err_free:
	kfree(ar->mac.sbands[IEEE80211_BAND_2GHZ].channels);
	kfree(ar->mac.sbands[IEEE80211_BAND_5GHZ].channels);

7194 7195 7196 7197 7198 7199 7200
	return ret;
}

void ath10k_mac_unregister(struct ath10k *ar)
{
	ieee80211_unregister_hw(ar->hw);

J
Janusz Dziedzic 已提交
7201 7202 7203
	if (config_enabled(CONFIG_ATH10K_DFS_CERTIFIED) && ar->dfs_detector)
		ar->dfs_detector->exit(ar->dfs_detector);

7204 7205 7206 7207 7208
	kfree(ar->mac.sbands[IEEE80211_BAND_2GHZ].channels);
	kfree(ar->mac.sbands[IEEE80211_BAND_5GHZ].channels);

	SET_IEEE80211_DEV(ar->hw, NULL);
}