mac.c 195.5 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,
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			     u8 hw_rate, bool cck)
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{
	const struct ieee80211_rate *rate;
	int i;

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

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

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

	return 0;
}

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

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

	return 0;
}

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

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

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

	return 1;
}

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

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

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

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

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

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

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

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

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

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

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

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

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

	return 0;
}

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

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	if (WARN_ON(arvif->vif->type != NL80211_IFTYPE_AP &&
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		    arvif->vif->type != NL80211_IFTYPE_ADHOC &&
		    arvif->vif->type != NL80211_IFTYPE_MESH_POINT))
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		return -EINVAL;

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

	if (!peer)
		return -ENOENT;

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

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

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

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

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

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

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

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	return 0;
}

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

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

	if (!peer)
		return -ENOENT;

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

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

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

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

	return first_errno;
}

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

	lockdep_assert_held(&ar->data_lock);

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

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

	return false;
}

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

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

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

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

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

	return first_errno;
}

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

	lockdep_assert_held(&ar->conf_mutex);

	list_for_each_entry(peer, &ar->peers, list) {
		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,
			      struct ieee80211_vif *vif,
			      struct ieee80211_sta *sta,
			      u32 vdev_id,
			      const u8 *addr,
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			      enum wmi_peer_type peer_type)
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{
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	struct ath10k_vif *arvif;
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	struct ath10k_peer *peer;
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	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;
649
	}
650 651

	ret = ath10k_wait_for_peer_created(ar, vdev_id, addr);
652
	if (ret) {
653
		ath10k_warn(ar, "failed to wait for created wmi peer %pM on vdev %i: %i\n",
654
			    addr, vdev_id, ret);
655
		return ret;
656
	}
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658 659 660 661 662 663 664 665 666 667 668 669 670 671 672 673
	spin_lock_bh(&ar->data_lock);

	peer = ath10k_peer_find(ar, vdev_id, addr);
	if (!peer) {
		ath10k_warn(ar, "failed to find peer %pM on vdev %i after creation\n",
			    addr, vdev_id);
		ath10k_wmi_peer_delete(ar, vdev_id, addr);
		spin_unlock_bh(&ar->data_lock);
		return -ENOENT;
	}

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

	spin_unlock_bh(&ar->data_lock);

674
	ar->num_peers++;
675 676 677 678

	return 0;
}

679 680 681 682 683 684 685 686 687 688
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) {
689
		ath10k_warn(ar, "failed to set kickout threshold on vdev %i: %d\n",
690
			    arvif->vdev_id, ret);
691 692 693 694 695 696 697
		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) {
698
		ath10k_warn(ar, "failed to set keepalive minimum idle time on vdev %i: %d\n",
699
			    arvif->vdev_id, ret);
700 701 702 703 704 705 706
		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) {
707
		ath10k_warn(ar, "failed to set keepalive maximum idle time on vdev %i: %d\n",
708
			    arvif->vdev_id, ret);
709 710 711 712 713 714 715
		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) {
716
		ath10k_warn(ar, "failed to set keepalive maximum unresponsive time on vdev %i: %d\n",
717
			    arvif->vdev_id, ret);
718 719 720 721 722 723
		return ret;
	}

	return 0;
}

724
static int ath10k_mac_set_rts(struct ath10k_vif *arvif, u32 value)
725
{
726 727 728 729 730
	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);
731 732
}

733 734 735 736 737 738 739 740 741 742 743 744 745 746
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;

747 748
	ar->num_peers--;

749 750 751 752 753 754
	return 0;
}

static void ath10k_peer_cleanup(struct ath10k *ar, u32 vdev_id)
{
	struct ath10k_peer *peer, *tmp;
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	int peer_id;
756 757 758 759 760 761 762 763

	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;

764
		ath10k_warn(ar, "removing stale peer %pM from vdev_id %d\n",
765 766
			    peer->addr, vdev_id);

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767 768 769 770 771
		for_each_set_bit(peer_id, peer->peer_ids,
				 ATH10K_MAX_NUM_PEER_IDS) {
			ar->peer_map[peer_id] = NULL;
		}

772 773
		list_del(&peer->list);
		kfree(peer);
774
		ar->num_peers--;
775 776 777 778
	}
	spin_unlock_bh(&ar->data_lock);
}

779 780 781 782 783 784 785 786 787 788 789 790
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;
793
	ar->num_stations = 0;
794 795
}

796 797 798 799 800 801 802 803 804 805 806 807 808 809 810 811 812 813 814 815 816 817 818 819 820 821 822 823 824 825 826 827
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;
}

828 829 830 831
/************************/
/* Interface management */
/************************/

832 833 834 835 836 837 838 839 840 841 842 843 844
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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Michal Kazior 已提交
845 846 847 848
	if (WARN_ON(arvif->beacon_state != ATH10K_BEACON_SCHEDULED &&
		    arvif->beacon_state != ATH10K_BEACON_SENT))
		return;

849 850 851
	dev_kfree_skb_any(arvif->beacon);

	arvif->beacon = NULL;
M
Michal Kazior 已提交
852
	arvif->beacon_state = ATH10K_BEACON_SCHEDULED;
853 854 855 856 857 858 859 860 861 862 863 864 865 866 867 868 869
}

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;
	}
}

870 871
static inline int ath10k_vdev_setup_sync(struct ath10k *ar)
{
872
	unsigned long time_left;
873

M
Michal Kazior 已提交
874 875
	lockdep_assert_held(&ar->conf_mutex);

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876 877 878
	if (test_bit(ATH10K_FLAG_CRASH_FLUSH, &ar->dev_flags))
		return -ESHUTDOWN;

879 880 881
	time_left = wait_for_completion_timeout(&ar->vdev_setup_done,
						ATH10K_VDEV_SETUP_TIMEOUT_HZ);
	if (time_left == 0)
882 883 884 885 886
		return -ETIMEDOUT;

	return 0;
}

M
Michal Kazior 已提交
887
static int ath10k_monitor_vdev_start(struct ath10k *ar, int vdev_id)
888
{
M
Michal Kazior 已提交
889
	struct cfg80211_chan_def *chandef = NULL;
890
	struct ieee80211_channel *channel = NULL;
891 892 893 894 895
	struct wmi_vdev_start_request_arg arg = {};
	int ret = 0;

	lockdep_assert_held(&ar->conf_mutex);

M
Michal Kazior 已提交
896 897 898 899 900 901 902 903
	ieee80211_iter_chan_contexts_atomic(ar->hw,
					    ath10k_mac_get_any_chandef_iter,
					    &chandef);
	if (WARN_ON_ONCE(!chandef))
		return -ENOENT;

	channel = chandef->chan;

904 905
	arg.vdev_id = vdev_id;
	arg.channel.freq = channel->center_freq;
906
	arg.channel.band_center_freq1 = chandef->center_freq1;
907 908 909

	/* TODO setup this dynamically, what in case we
	   don't have any vifs? */
910
	arg.channel.mode = chan_to_phymode(chandef);
911 912
	arg.channel.chan_radar =
			!!(channel->flags & IEEE80211_CHAN_RADAR);
913

914
	arg.channel.min_power = 0;
M
Michal Kazior 已提交
915 916 917
	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;
918

M
Michal Kazior 已提交
919 920
	reinit_completion(&ar->vdev_setup_done);

921 922
	ret = ath10k_wmi_vdev_start(ar, &arg);
	if (ret) {
923
		ath10k_warn(ar, "failed to request monitor vdev %i start: %d\n",
924
			    vdev_id, ret);
925 926 927 928 929
		return ret;
	}

	ret = ath10k_vdev_setup_sync(ar);
	if (ret) {
930
		ath10k_warn(ar, "failed to synchronize setup for monitor vdev %i start: %d\n",
931
			    vdev_id, ret);
932 933 934 935 936
		return ret;
	}

	ret = ath10k_wmi_vdev_up(ar, vdev_id, 0, ar->mac_addr);
	if (ret) {
937
		ath10k_warn(ar, "failed to put up monitor vdev %i: %d\n",
938
			    vdev_id, ret);
939 940 941 942 943
		goto vdev_stop;
	}

	ar->monitor_vdev_id = vdev_id;

944
	ath10k_dbg(ar, ATH10K_DBG_MAC, "mac monitor vdev %i started\n",
M
Michal Kazior 已提交
945
		   ar->monitor_vdev_id);
946 947 948 949 950
	return 0;

vdev_stop:
	ret = ath10k_wmi_vdev_stop(ar, ar->monitor_vdev_id);
	if (ret)
951
		ath10k_warn(ar, "failed to stop monitor vdev %i after start failure: %d\n",
952
			    ar->monitor_vdev_id, ret);
953 954 955 956

	return ret;
}

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Michal Kazior 已提交
957
static int ath10k_monitor_vdev_stop(struct ath10k *ar)
958 959 960 961 962
{
	int ret = 0;

	lockdep_assert_held(&ar->conf_mutex);

963 964
	ret = ath10k_wmi_vdev_down(ar, ar->monitor_vdev_id);
	if (ret)
965
		ath10k_warn(ar, "failed to put down monitor vdev %i: %d\n",
966
			    ar->monitor_vdev_id, ret);
967

M
Michal Kazior 已提交
968 969
	reinit_completion(&ar->vdev_setup_done);

970 971
	ret = ath10k_wmi_vdev_stop(ar, ar->monitor_vdev_id);
	if (ret)
972
		ath10k_warn(ar, "failed to to request monitor vdev %i stop: %d\n",
973
			    ar->monitor_vdev_id, ret);
974 975 976

	ret = ath10k_vdev_setup_sync(ar);
	if (ret)
977
		ath10k_warn(ar, "failed to synchronize monitor vdev %i stop: %d\n",
978
			    ar->monitor_vdev_id, ret);
979

980
	ath10k_dbg(ar, ATH10K_DBG_MAC, "mac monitor vdev %i stopped\n",
M
Michal Kazior 已提交
981
		   ar->monitor_vdev_id);
982 983 984
	return ret;
}

M
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985
static int ath10k_monitor_vdev_create(struct ath10k *ar)
986 987 988 989 990
{
	int bit, ret = 0;

	lockdep_assert_held(&ar->conf_mutex);

B
Ben Greear 已提交
991
	if (ar->free_vdev_map == 0) {
992
		ath10k_warn(ar, "failed to find free vdev id for monitor vdev\n");
993 994 995
		return -ENOMEM;
	}

B
Ben Greear 已提交
996
	bit = __ffs64(ar->free_vdev_map);
B
Ben Greear 已提交
997

B
Ben Greear 已提交
998
	ar->monitor_vdev_id = bit;
999 1000 1001 1002 1003

	ret = ath10k_wmi_vdev_create(ar, ar->monitor_vdev_id,
				     WMI_VDEV_TYPE_MONITOR,
				     0, ar->mac_addr);
	if (ret) {
1004
		ath10k_warn(ar, "failed to request monitor vdev %i creation: %d\n",
1005
			    ar->monitor_vdev_id, ret);
B
Ben Greear 已提交
1006
		return ret;
1007 1008
	}

B
Ben Greear 已提交
1009
	ar->free_vdev_map &= ~(1LL << ar->monitor_vdev_id);
1010
	ath10k_dbg(ar, ATH10K_DBG_MAC, "mac monitor vdev %d created\n",
1011 1012 1013 1014 1015
		   ar->monitor_vdev_id);

	return 0;
}

M
Michal Kazior 已提交
1016
static int ath10k_monitor_vdev_delete(struct ath10k *ar)
1017 1018 1019 1020 1021 1022 1023
{
	int ret = 0;

	lockdep_assert_held(&ar->conf_mutex);

	ret = ath10k_wmi_vdev_delete(ar, ar->monitor_vdev_id);
	if (ret) {
1024
		ath10k_warn(ar, "failed to request wmi monitor vdev %i removal: %d\n",
1025
			    ar->monitor_vdev_id, ret);
1026 1027 1028
		return ret;
	}

B
Ben Greear 已提交
1029
	ar->free_vdev_map |= 1LL << ar->monitor_vdev_id;
1030

1031
	ath10k_dbg(ar, ATH10K_DBG_MAC, "mac monitor vdev %d deleted\n",
1032 1033 1034 1035
		   ar->monitor_vdev_id);
	return ret;
}

M
Michal Kazior 已提交
1036 1037 1038 1039 1040 1041 1042 1043
static int ath10k_monitor_start(struct ath10k *ar)
{
	int ret;

	lockdep_assert_held(&ar->conf_mutex);

	ret = ath10k_monitor_vdev_create(ar);
	if (ret) {
1044
		ath10k_warn(ar, "failed to create monitor vdev: %d\n", ret);
M
Michal Kazior 已提交
1045 1046 1047 1048 1049
		return ret;
	}

	ret = ath10k_monitor_vdev_start(ar, ar->monitor_vdev_id);
	if (ret) {
1050
		ath10k_warn(ar, "failed to start monitor vdev: %d\n", ret);
M
Michal Kazior 已提交
1051 1052 1053 1054 1055
		ath10k_monitor_vdev_delete(ar);
		return ret;
	}

	ar->monitor_started = true;
1056
	ath10k_dbg(ar, ATH10K_DBG_MAC, "mac monitor started\n");
M
Michal Kazior 已提交
1057 1058 1059 1060

	return 0;
}

1061
static int ath10k_monitor_stop(struct ath10k *ar)
M
Michal Kazior 已提交
1062 1063 1064 1065 1066 1067
{
	int ret;

	lockdep_assert_held(&ar->conf_mutex);

	ret = ath10k_monitor_vdev_stop(ar);
1068
	if (ret) {
1069
		ath10k_warn(ar, "failed to stop monitor vdev: %d\n", ret);
1070 1071
		return ret;
	}
M
Michal Kazior 已提交
1072 1073

	ret = ath10k_monitor_vdev_delete(ar);
1074
	if (ret) {
1075
		ath10k_warn(ar, "failed to delete monitor vdev: %d\n", ret);
1076 1077
		return ret;
	}
M
Michal Kazior 已提交
1078 1079

	ar->monitor_started = false;
1080
	ath10k_dbg(ar, ATH10K_DBG_MAC, "mac monitor stopped\n");
1081 1082 1083 1084

	return 0;
}

M
Michal Kazior 已提交
1085 1086 1087 1088 1089 1090 1091 1092 1093 1094 1095 1096 1097 1098 1099 1100 1101 1102
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 ||
1103
	       ar->filter_flags & FIF_OTHER_BSS ||
M
Michal Kazior 已提交
1104 1105 1106 1107 1108 1109 1110 1111 1112 1113 1114 1115 1116 1117 1118 1119 1120 1121 1122
	       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;
}

1123 1124
static int ath10k_monitor_recalc(struct ath10k *ar)
{
M
Michal Kazior 已提交
1125 1126 1127
	bool needed;
	bool allowed;
	int ret;
1128 1129 1130

	lockdep_assert_held(&ar->conf_mutex);

M
Michal Kazior 已提交
1131 1132
	needed = ath10k_mac_monitor_vdev_is_needed(ar);
	allowed = ath10k_mac_monitor_vdev_is_allowed(ar);
1133 1134

	ath10k_dbg(ar, ATH10K_DBG_MAC,
M
Michal Kazior 已提交
1135 1136
		   "mac monitor recalc started? %d needed? %d allowed? %d\n",
		   ar->monitor_started, needed, allowed);
1137

M
Michal Kazior 已提交
1138 1139 1140 1141 1142 1143
	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)
1144 1145
				ath10k_warn(ar, "failed to stop disallowed monitor: %d\n",
					    ret);
M
Michal Kazior 已提交
1146 1147
				/* not serious */
		}
1148

M
Michal Kazior 已提交
1149 1150
		return -EPERM;
	}
1151

M
Michal Kazior 已提交
1152
	if (needed == ar->monitor_started)
1153 1154
		return 0;

M
Michal Kazior 已提交
1155
	if (needed)
1156
		return ath10k_monitor_start(ar);
M
Michal Kazior 已提交
1157 1158
	else
		return ath10k_monitor_stop(ar);
M
Michal Kazior 已提交
1159 1160
}

1161 1162 1163 1164 1165 1166 1167 1168 1169
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;

1170
	rts_cts |= SM(WMI_RTSCTS_ENABLED, WMI_RTSCTS_SET);
1171 1172 1173 1174

	if (arvif->num_legacy_stations > 0)
		rts_cts |= SM(WMI_RTSCTS_ACROSS_SW_RETRIES,
			      WMI_RTSCTS_PROFILE);
1175 1176 1177
	else
		rts_cts |= SM(WMI_RTSCTS_FOR_SECOND_RATESERIES,
			      WMI_RTSCTS_PROFILE);
1178 1179 1180 1181 1182

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

1183 1184 1185 1186 1187 1188 1189 1190
static int ath10k_start_cac(struct ath10k *ar)
{
	int ret;

	lockdep_assert_held(&ar->conf_mutex);

	set_bit(ATH10K_CAC_RUNNING, &ar->dev_flags);

1191
	ret = ath10k_monitor_recalc(ar);
1192
	if (ret) {
1193
		ath10k_warn(ar, "failed to start monitor (cac): %d\n", ret);
1194 1195 1196 1197
		clear_bit(ATH10K_CAC_RUNNING, &ar->dev_flags);
		return ret;
	}

1198
	ath10k_dbg(ar, ATH10K_DBG_MAC, "mac cac start monitor vdev %d\n",
1199 1200 1201 1202 1203 1204 1205 1206 1207 1208 1209 1210 1211 1212
		   ar->monitor_vdev_id);

	return 0;
}

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

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

	clear_bit(ATH10K_CAC_RUNNING, &ar->dev_flags);
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	ath10k_monitor_stop(ar);
1214

1215
	ath10k_dbg(ar, ATH10K_DBG_MAC, "mac cac finished\n");
1216 1217 1218 1219

	return 0;
}

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

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

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

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

	return has_radar;
}

1241
static void ath10k_recalc_radar_detection(struct ath10k *ar)
1242 1243 1244 1245 1246 1247 1248
{
	int ret;

	lockdep_assert_held(&ar->conf_mutex);

	ath10k_stop_cac(ar);

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	if (!ath10k_mac_has_radar_enabled(ar))
1250 1251
		return;

1252
	if (ar->num_started_vdevs > 0)
1253 1254 1255 1256 1257 1258 1259 1260 1261
		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.
		 */
1262
		ath10k_warn(ar, "failed to start CAC: %d\n", ret);
1263 1264 1265 1266
		ieee80211_radar_detected(ar->hw);
	}
}

1267 1268 1269 1270 1271 1272 1273 1274 1275 1276 1277 1278 1279 1280 1281 1282 1283 1284 1285 1286 1287 1288 1289 1290 1291 1292 1293 1294 1295 1296 1297 1298 1299
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;
	}

1338
	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));

1343 1344 1345 1346 1347
	if (restart)
		ret = ath10k_wmi_vdev_restart(ar, &arg);
	else
		ret = ath10k_wmi_vdev_start(ar, &arg);

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	if (ret) {
1349
		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) {
1356 1357 1358
		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;
	}

1362 1363 1364
	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)
1370
{
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	return ath10k_vdev_start_restart(arvif, def, false);
1372 1373
}

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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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}

1380 1381 1382 1383 1384 1385 1386 1387
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;

1388
	if (arvif->vif->type != NL80211_IFTYPE_AP || !arvif->vif->p2p)
1389 1390 1391 1392 1393 1394 1395 1396 1397 1398 1399 1400 1401 1402 1403 1404 1405 1406 1407 1408 1409 1410 1411 1412 1413 1414 1415 1416 1417 1418 1419 1420 1421 1422 1423 1424 1425 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
		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;

1451 1452 1453 1454
	if (arvif->vdev_type != WMI_VDEV_TYPE_AP &&
	    arvif->vdev_type != WMI_VDEV_TYPE_IBSS)
		return 0;

1455 1456 1457 1458 1459 1460 1461 1462 1463 1464 1465 1466 1467 1468 1469 1470 1471 1472 1473 1474 1475 1476 1477 1478 1479 1480 1481 1482 1483 1484 1485 1486 1487 1488 1489 1490 1491 1492 1493 1494 1495 1496 1497 1498 1499
	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;

1500 1501 1502
	if (arvif->vdev_type != WMI_VDEV_TYPE_AP)
		return 0;

1503 1504 1505 1506 1507 1508 1509 1510 1511 1512 1513 1514 1515 1516 1517 1518 1519 1520
	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;
}

1595
static void ath10k_control_beaconing(struct ath10k_vif *arvif,
1596
				     struct ieee80211_bss_conf *info)
1597
{
1598
	struct ath10k *ar = arvif->ar;
1599 1600
	int ret = 0;

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Michal Kazior 已提交
1601 1602
	lockdep_assert_held(&arvif->ar->conf_mutex);

1603
	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);
1608 1609 1610

		arvif->is_up = false;

1611
		spin_lock_bh(&arvif->ar->data_lock);
1612
		ath10k_mac_vif_beacon_free(arvif);
1613 1614
		spin_unlock_bh(&arvif->ar->data_lock);

1615 1616 1617 1618 1619
		return;
	}

	arvif->tx_seq_no = 0x1000;

1620
	arvif->aid = 0;
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Kalle Valo 已提交
1621
	ether_addr_copy(arvif->bssid, info->bssid);
1622 1623 1624

	ret = ath10k_wmi_vdev_up(arvif->ar, arvif->vdev_id, arvif->aid,
				 arvif->bssid);
1625
	if (ret) {
1626
		ath10k_warn(ar, "failed to bring up vdev %d: %i\n",
1627
			    arvif->vdev_id, ret);
1628 1629
		return;
	}
1630 1631 1632

	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;
	}

1640
	ath10k_dbg(ar, ATH10K_DBG_MAC, "mac vdev %d up\n", arvif->vdev_id);
1641 1642 1643 1644 1645 1646
}

static void ath10k_control_ibss(struct ath10k_vif *arvif,
				struct ieee80211_bss_conf *info,
				const u8 self_peer[ETH_ALEN])
{
1647
	struct ath10k *ar = arvif->ar;
1648
	u32 vdev_param;
1649 1650
	int ret = 0;

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Michal Kazior 已提交
1651 1652
	lockdep_assert_held(&arvif->ar->conf_mutex);

1653
	if (!info->ibss_joined) {
1654
		if (is_zero_ether_addr(arvif->bssid))
1655 1656
			return;

1657
		eth_zero_addr(arvif->bssid);
1658 1659 1660 1661

		return;
	}

1662 1663
	vdev_param = arvif->ar->wmi.vdev_param->atim_window;
	ret = ath10k_wmi_vdev_set_param(arvif->ar, arvif->vdev_id, vdev_param,
1664 1665
					ATH10K_DEFAULT_ATIM);
	if (ret)
1666
		ath10k_warn(ar, "failed to set IBSS ATIM for vdev %d: %d\n",
1667 1668 1669
			    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;
}

1721
static int ath10k_mac_num_vifs_started(struct ath10k *ar)
1722 1723 1724 1725 1726 1727 1728
{
	struct ath10k_vif *arvif;
	int num = 0;

	lockdep_assert_held(&ar->conf_mutex);

	list_for_each_entry(arvif, &ar->arvifs, list)
1729
		if (arvif->is_started)
1730 1731 1732 1733 1734
			num++;

	return num;
}

1735
static int ath10k_mac_vif_setup_ps(struct ath10k_vif *arvif)
1736
{
1737
	struct ath10k *ar = arvif->ar;
1738
	struct ieee80211_vif *vif = arvif->vif;
1739
	struct ieee80211_conf *conf = &ar->hw->conf;
1740 1741 1742
	enum wmi_sta_powersave_param param;
	enum wmi_sta_ps_mode psmode;
	int ret;
1743
	int ps_timeout;
1744
	bool enable_ps;
1745

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Michal Kazior 已提交
1746 1747
	lockdep_assert_held(&arvif->ar->conf_mutex);

1748 1749
	if (arvif->vif->type != NL80211_IFTYPE_STATION)
		return 0;
1750

1751 1752
	enable_ps = arvif->ps;

1753
	if (enable_ps && ath10k_mac_num_vifs_started(ar) > 1 &&
1754 1755 1756 1757 1758 1759 1760
	    !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;
	}

1761 1762 1763 1764 1765 1766 1767 1768
	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) {
1769 1770 1771
		psmode = WMI_STA_PS_MODE_ENABLED;
		param = WMI_STA_PS_PARAM_INACTIVITY_TIME;

1772 1773 1774 1775 1776 1777 1778
		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;
		}

1779
		ret = ath10k_wmi_set_sta_ps_param(ar, arvif->vdev_id, param,
1780
						  ps_timeout);
1781
		if (ret) {
1782
			ath10k_warn(ar, "failed to set inactivity time for vdev %d: %i\n",
1783
				    arvif->vdev_id, ret);
1784
			return ret;
1785 1786 1787 1788 1789
		}
	} else {
		psmode = WMI_STA_PS_MODE_DISABLED;
	}

1790
	ath10k_dbg(ar, ATH10K_DBG_MAC, "mac vdev %d psmode %s\n",
K
Kalle Valo 已提交
1791 1792
		   arvif->vdev_id, psmode ? "enable" : "disable");

1793 1794
	ret = ath10k_wmi_set_psmode(ar, arvif->vdev_id, psmode);
	if (ret) {
1795
		ath10k_warn(ar, "failed to set PS Mode %d for vdev %d: %d\n",
1796
			    psmode, arvif->vdev_id, ret);
1797 1798 1799 1800
		return ret;
	}

	return 0;
1801 1802
}

M
Michal Kazior 已提交
1803 1804 1805 1806 1807 1808 1809 1810 1811 1812 1813 1814 1815 1816 1817 1818 1819 1820 1821 1822 1823 1824 1825 1826 1827 1828 1829 1830 1831 1832 1833 1834
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;
}

1835 1836 1837 1838 1839 1840
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;

1841 1842 1843 1844 1845
	lockdep_assert_held(&arvif->ar->conf_mutex);

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

1846 1847 1848 1849 1850 1851 1852 1853 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
	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);
}

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 1923 1924 1925 1926 1927 1928 1929 1930 1931 1932 1933 1934 1935 1936 1937 1938 1939 1940 1941 1942 1943 1944 1945 1946 1947 1948 1949 1950 1951
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);
}

1952 1953 1954 1955
/**********************/
/* Station management */
/**********************/

M
Michal Kazior 已提交
1956 1957 1958 1959 1960 1961 1962 1963 1964 1965 1966 1967 1968 1969 1970 1971 1972
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;
}

1973
static void ath10k_peer_assoc_h_basic(struct ath10k *ar,
M
Michal Kazior 已提交
1974
				      struct ieee80211_vif *vif,
1975 1976 1977
				      struct ieee80211_sta *sta,
				      struct wmi_peer_assoc_complete_arg *arg)
{
M
Michal Kazior 已提交
1978
	struct ath10k_vif *arvif = ath10k_vif_to_arvif(vif);
1979
	u32 aid;
M
Michal Kazior 已提交
1980

M
Michal Kazior 已提交
1981 1982
	lockdep_assert_held(&ar->conf_mutex);

1983 1984 1985 1986 1987
	if (vif->type == NL80211_IFTYPE_STATION)
		aid = vif->bss_conf.aid;
	else
		aid = sta->aid;

K
Kalle Valo 已提交
1988
	ether_addr_copy(arg->addr, sta->addr);
1989
	arg->vdev_id = arvif->vdev_id;
1990
	arg->peer_aid = aid;
1991
	arg->peer_flags |= arvif->ar->wmi.peer_flags->auth;
M
Michal Kazior 已提交
1992
	arg->peer_listen_intval = ath10k_peer_assoc_h_listen_intval(ar, vif);
1993
	arg->peer_num_spatial_streams = 1;
M
Michal Kazior 已提交
1994
	arg->peer_caps = vif->bss_conf.assoc_capability;
1995 1996 1997
}

static void ath10k_peer_assoc_h_crypto(struct ath10k *ar,
M
Michal Kazior 已提交
1998
				       struct ieee80211_vif *vif,
1999
				       struct ieee80211_sta *sta,
2000 2001 2002
				       struct wmi_peer_assoc_complete_arg *arg)
{
	struct ieee80211_bss_conf *info = &vif->bss_conf;
M
Michal Kazior 已提交
2003
	struct cfg80211_chan_def def;
2004 2005 2006 2007
	struct cfg80211_bss *bss;
	const u8 *rsnie = NULL;
	const u8 *wpaie = NULL;

M
Michal Kazior 已提交
2008 2009
	lockdep_assert_held(&ar->conf_mutex);

M
Michal Kazior 已提交
2010 2011 2012 2013 2014
	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);
2015 2016 2017 2018 2019 2020 2021 2022 2023
	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,
2024 2025 2026
						WLAN_OUI_TYPE_MICROSOFT_WPA,
						ies->data,
						ies->len);
2027 2028 2029 2030 2031 2032
		rcu_read_unlock();
		cfg80211_put_bss(ar->hw->wiphy, bss);
	}

	/* FIXME: base on RSN IE/WPA IE is a correct idea? */
	if (rsnie || wpaie) {
2033
		ath10k_dbg(ar, ATH10K_DBG_WMI, "%s: rsn ie found\n", __func__);
2034
		arg->peer_flags |= ar->wmi.peer_flags->need_ptk_4_way;
2035 2036 2037
	}

	if (wpaie) {
2038
		ath10k_dbg(ar, ATH10K_DBG_WMI, "%s: wpa ie found\n", __func__);
2039
		arg->peer_flags |= ar->wmi.peer_flags->need_gtk_2_way;
2040
	}
2041 2042 2043 2044

	if (sta->mfp &&
	    test_bit(ATH10K_FW_FEATURE_MFP_SUPPORT, ar->fw_features)) {
		arg->peer_flags |= ar->wmi.peer_flags->pmf;
2045 2046 2047 2048
	}
}

static void ath10k_peer_assoc_h_rates(struct ath10k *ar,
M
Michal Kazior 已提交
2049
				      struct ieee80211_vif *vif,
2050 2051 2052
				      struct ieee80211_sta *sta,
				      struct wmi_peer_assoc_complete_arg *arg)
{
2053
	struct ath10k_vif *arvif = ath10k_vif_to_arvif(vif);
2054
	struct wmi_rate_set_arg *rateset = &arg->peer_legacy_rates;
M
Michal Kazior 已提交
2055
	struct cfg80211_chan_def def;
2056 2057
	const struct ieee80211_supported_band *sband;
	const struct ieee80211_rate *rates;
2058
	enum ieee80211_band band;
2059
	u32 ratemask;
M
Michal Kazior 已提交
2060
	u8 rate;
2061 2062
	int i;

M
Michal Kazior 已提交
2063 2064
	lockdep_assert_held(&ar->conf_mutex);

M
Michal Kazior 已提交
2065 2066 2067
	if (WARN_ON(ath10k_mac_vif_chan(vif, &def)))
		return;

2068 2069 2070 2071
	band = def.chan->band;
	sband = ar->hw->wiphy->bands[band];
	ratemask = sta->supp_rates[band];
	ratemask &= arvif->bitrate_mask.control[band].legacy;
2072 2073 2074 2075 2076 2077 2078 2079
	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
2080 2081
		rate = ath10k_mac_bitrate_to_rate(rates->bitrate);
		rateset->rates[rateset->num_rates] = rate;
2082 2083 2084 2085
		rateset->num_rates++;
	}
}

2086 2087 2088 2089 2090 2091 2092 2093 2094 2095 2096 2097 2098 2099 2100 2101 2102 2103 2104 2105 2106 2107 2108 2109
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;
}

2110
static void ath10k_peer_assoc_h_ht(struct ath10k *ar,
2111
				   struct ieee80211_vif *vif,
2112 2113 2114 2115
				   struct ieee80211_sta *sta,
				   struct wmi_peer_assoc_complete_arg *arg)
{
	const struct ieee80211_sta_ht_cap *ht_cap = &sta->ht_cap;
2116 2117 2118 2119 2120
	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;
2121 2122
	int i, n;
	u8 max_nss;
2123
	u32 stbc;
2124

M
Michal Kazior 已提交
2125 2126
	lockdep_assert_held(&ar->conf_mutex);

2127 2128 2129
	if (WARN_ON(ath10k_mac_vif_chan(vif, &def)))
		return;

2130 2131 2132
	if (!ht_cap->ht_supported)
		return;

2133 2134 2135 2136 2137 2138 2139 2140
	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;

2141
	arg->peer_flags |= ar->wmi.peer_flags->ht;
2142 2143 2144 2145 2146 2147 2148 2149 2150 2151
	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)
2152
		arg->peer_flags |= ar->wmi.peer_flags->ldbc;
2153 2154

	if (sta->bandwidth >= IEEE80211_STA_RX_BW_40) {
2155
		arg->peer_flags |= ar->wmi.peer_flags->bw40;
2156 2157 2158
		arg->peer_rate_caps |= WMI_RC_CW40_FLAG;
	}

2159 2160 2161
	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;
2162

2163 2164 2165
		if (ht_cap->cap & IEEE80211_HT_CAP_SGI_40)
			arg->peer_rate_caps |= WMI_RC_SGI_FLAG;
	}
2166 2167 2168

	if (ht_cap->cap & IEEE80211_HT_CAP_TX_STBC) {
		arg->peer_rate_caps |= WMI_RC_TX_STBC_FLAG;
2169
		arg->peer_flags |= ar->wmi.peer_flags->stbc;
2170 2171 2172 2173 2174 2175 2176
	}

	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;
2177
		arg->peer_flags |= ar->wmi.peer_flags->stbc;
2178 2179 2180 2181 2182 2183 2184
	}

	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;

2185 2186 2187 2188
	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;
2189
			arg->peer_ht_rates.rates[n++] = i;
2190
		}
2191

2192 2193 2194 2195 2196 2197 2198 2199 2200 2201 2202 2203 2204 2205 2206
	/*
	 * 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;
2207
		arg->peer_num_spatial_streams = min(sta->rx_nss, max_nss);
2208
	}
2209

2210
	ath10k_dbg(ar, ATH10K_DBG_MAC, "mac ht peer %pM mcs cnt %d nss %d\n",
K
Kalle Valo 已提交
2211
		   arg->addr,
2212 2213 2214 2215
		   arg->peer_ht_rates.num_rates,
		   arg->peer_num_spatial_streams);
}

2216 2217 2218
static int ath10k_peer_assoc_qos_ap(struct ath10k *ar,
				    struct ath10k_vif *arvif,
				    struct ieee80211_sta *sta)
2219 2220 2221
{
	u32 uapsd = 0;
	u32 max_sp = 0;
2222
	int ret = 0;
2223

M
Michal Kazior 已提交
2224 2225
	lockdep_assert_held(&ar->conf_mutex);

2226
	if (sta->wme && sta->uapsd_queues) {
2227
		ath10k_dbg(ar, ATH10K_DBG_MAC, "mac uapsd_queues 0x%x max_sp %d\n",
2228 2229 2230 2231 2232 2233 2234 2235 2236 2237 2238 2239 2240 2241 2242 2243 2244 2245
			   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;

2246 2247 2248 2249 2250
		ret = ath10k_wmi_set_ap_ps_param(ar, arvif->vdev_id,
						 sta->addr,
						 WMI_AP_PS_PEER_PARAM_UAPSD,
						 uapsd);
		if (ret) {
2251
			ath10k_warn(ar, "failed to set ap ps peer param uapsd for vdev %i: %d\n",
2252
				    arvif->vdev_id, ret);
2253 2254
			return ret;
		}
2255

2256 2257 2258 2259 2260
		ret = ath10k_wmi_set_ap_ps_param(ar, arvif->vdev_id,
						 sta->addr,
						 WMI_AP_PS_PEER_PARAM_MAX_SP,
						 max_sp);
		if (ret) {
2261
			ath10k_warn(ar, "failed to set ap ps peer param max sp for vdev %i: %d\n",
2262
				    arvif->vdev_id, ret);
2263 2264
			return ret;
		}
2265 2266 2267 2268 2269

		/* 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 */
2270
		ret = ath10k_wmi_set_ap_ps_param(ar, arvif->vdev_id, sta->addr,
2271 2272
						 WMI_AP_PS_PEER_PARAM_AGEOUT_TIME,
						 10);
2273
		if (ret) {
2274
			ath10k_warn(ar, "failed to set ap ps peer param ageout time for vdev %i: %d\n",
2275
				    arvif->vdev_id, ret);
2276 2277
			return ret;
		}
2278 2279
	}

2280
	return 0;
2281 2282
}

2283 2284 2285 2286 2287 2288 2289 2290 2291 2292 2293 2294 2295 2296 2297 2298 2299 2300 2301 2302 2303 2304 2305 2306 2307 2308 2309 2310 2311 2312 2313 2314 2315 2316 2317 2318 2319 2320 2321 2322 2323 2324 2325 2326 2327 2328 2329 2330 2331 2332 2333
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;
}

2334
static void ath10k_peer_assoc_h_vht(struct ath10k *ar,
M
Michal Kazior 已提交
2335
				    struct ieee80211_vif *vif,
2336 2337 2338 2339
				    struct ieee80211_sta *sta,
				    struct wmi_peer_assoc_complete_arg *arg)
{
	const struct ieee80211_sta_vht_cap *vht_cap = &sta->vht_cap;
2340
	struct ath10k_vif *arvif = ath10k_vif_to_arvif(vif);
M
Michal Kazior 已提交
2341
	struct cfg80211_chan_def def;
2342 2343
	enum ieee80211_band band;
	const u16 *vht_mcs_mask;
2344
	u8 ampdu_factor;
2345

M
Michal Kazior 已提交
2346 2347 2348
	if (WARN_ON(ath10k_mac_vif_chan(vif, &def)))
		return;

2349 2350 2351
	if (!vht_cap->vht_supported)
		return;

2352 2353 2354 2355 2356 2357
	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;

2358
	arg->peer_flags |= ar->wmi.peer_flags->vht;
2359

M
Michal Kazior 已提交
2360
	if (def.chan->band == IEEE80211_BAND_2GHZ)
2361
		arg->peer_flags |= ar->wmi.peer_flags->vht_2g;
2362

2363 2364
	arg->peer_vht_caps = vht_cap->cap;

2365 2366 2367 2368 2369 2370 2371 2372 2373 2374 2375 2376
	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);

2377
	if (sta->bandwidth == IEEE80211_STA_RX_BW_80)
2378
		arg->peer_flags |= ar->wmi.peer_flags->bw80;
2379 2380 2381 2382 2383 2384 2385

	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);
2386 2387
	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);
2388

2389
	ath10k_dbg(ar, ATH10K_DBG_MAC, "mac vht peer %pM max_mpdu %d flags 0x%x\n",
K
Kalle Valo 已提交
2390
		   sta->addr, arg->peer_max_mpdu, arg->peer_flags);
2391 2392 2393
}

static void ath10k_peer_assoc_h_qos(struct ath10k *ar,
M
Michal Kazior 已提交
2394
				    struct ieee80211_vif *vif,
2395 2396 2397
				    struct ieee80211_sta *sta,
				    struct wmi_peer_assoc_complete_arg *arg)
{
M
Michal Kazior 已提交
2398 2399
	struct ath10k_vif *arvif = ath10k_vif_to_arvif(vif);

2400 2401
	switch (arvif->vdev_type) {
	case WMI_VDEV_TYPE_AP:
2402
		if (sta->wme)
2403
			arg->peer_flags |= arvif->ar->wmi.peer_flags->qos;
2404 2405

		if (sta->wme && sta->uapsd_queues) {
2406
			arg->peer_flags |= arvif->ar->wmi.peer_flags->apsd;
2407 2408
			arg->peer_rate_caps |= WMI_RC_UAPSD_FLAG;
		}
2409 2410
		break;
	case WMI_VDEV_TYPE_STA:
M
Michal Kazior 已提交
2411
		if (vif->bss_conf.qos)
2412
			arg->peer_flags |= arvif->ar->wmi.peer_flags->qos;
2413
		break;
2414 2415
	case WMI_VDEV_TYPE_IBSS:
		if (sta->wme)
2416
			arg->peer_flags |= arvif->ar->wmi.peer_flags->qos;
2417
		break;
2418 2419 2420
	default:
		break;
	}
2421 2422

	ath10k_dbg(ar, ATH10K_DBG_MAC, "mac peer %pM qos %d\n",
2423 2424
		   sta->addr, !!(arg->peer_flags &
		   arvif->ar->wmi.peer_flags->qos));
2425 2426
}

2427
static bool ath10k_mac_sta_has_ofdm_only(struct ieee80211_sta *sta)
M
Michal Kazior 已提交
2428
{
2429 2430
	return sta->supp_rates[IEEE80211_BAND_2GHZ] >>
	       ATH10K_MAC_FIRST_OFDM_RATE_IDX;
M
Michal Kazior 已提交
2431 2432
}

2433
static void ath10k_peer_assoc_h_phymode(struct ath10k *ar,
M
Michal Kazior 已提交
2434
					struct ieee80211_vif *vif,
2435 2436 2437
					struct ieee80211_sta *sta,
					struct wmi_peer_assoc_complete_arg *arg)
{
2438
	struct ath10k_vif *arvif = ath10k_vif_to_arvif(vif);
M
Michal Kazior 已提交
2439
	struct cfg80211_chan_def def;
2440 2441 2442
	enum ieee80211_band band;
	const u8 *ht_mcs_mask;
	const u16 *vht_mcs_mask;
2443 2444
	enum wmi_phy_mode phymode = MODE_UNKNOWN;

M
Michal Kazior 已提交
2445 2446 2447
	if (WARN_ON(ath10k_mac_vif_chan(vif, &def)))
		return;

2448 2449 2450 2451 2452
	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) {
2453
	case IEEE80211_BAND_2GHZ:
2454 2455
		if (sta->vht_cap.vht_supported &&
		    !ath10k_peer_assoc_h_vht_masked(vht_mcs_mask)) {
2456 2457 2458 2459
			if (sta->bandwidth == IEEE80211_STA_RX_BW_40)
				phymode = MODE_11AC_VHT40;
			else
				phymode = MODE_11AC_VHT20;
2460 2461
		} else if (sta->ht_cap.ht_supported &&
			   !ath10k_peer_assoc_h_ht_masked(ht_mcs_mask)) {
2462 2463 2464 2465
			if (sta->bandwidth == IEEE80211_STA_RX_BW_40)
				phymode = MODE_11NG_HT40;
			else
				phymode = MODE_11NG_HT20;
2466
		} else if (ath10k_mac_sta_has_ofdm_only(sta)) {
2467
			phymode = MODE_11G;
M
Michal Kazior 已提交
2468 2469
		} else {
			phymode = MODE_11B;
2470 2471 2472 2473
		}

		break;
	case IEEE80211_BAND_5GHZ:
2474 2475 2476
		/*
		 * Check VHT first.
		 */
2477 2478
		if (sta->vht_cap.vht_supported &&
		    !ath10k_peer_assoc_h_vht_masked(vht_mcs_mask)) {
2479 2480 2481 2482 2483 2484
			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;
2485 2486 2487
		} else if (sta->ht_cap.ht_supported &&
			   !ath10k_peer_assoc_h_ht_masked(ht_mcs_mask)) {
			if (sta->bandwidth >= IEEE80211_STA_RX_BW_40)
2488 2489 2490 2491 2492 2493 2494 2495 2496 2497 2498 2499
				phymode = MODE_11NA_HT40;
			else
				phymode = MODE_11NA_HT20;
		} else {
			phymode = MODE_11A;
		}

		break;
	default:
		break;
	}

2500
	ath10k_dbg(ar, ATH10K_DBG_MAC, "mac peer %pM phymode %s\n",
K
Kalle Valo 已提交
2501
		   sta->addr, ath10k_wmi_phymode_str(phymode));
K
Kalle Valo 已提交
2502

2503 2504 2505 2506
	arg->peer_phymode = phymode;
	WARN_ON(phymode == MODE_UNKNOWN);
}

2507
static int ath10k_peer_assoc_prepare(struct ath10k *ar,
M
Michal Kazior 已提交
2508
				     struct ieee80211_vif *vif,
2509 2510
				     struct ieee80211_sta *sta,
				     struct wmi_peer_assoc_complete_arg *arg)
2511
{
M
Michal Kazior 已提交
2512 2513
	lockdep_assert_held(&ar->conf_mutex);

2514
	memset(arg, 0, sizeof(*arg));
2515

M
Michal Kazior 已提交
2516
	ath10k_peer_assoc_h_basic(ar, vif, sta, arg);
2517
	ath10k_peer_assoc_h_crypto(ar, vif, sta, arg);
M
Michal Kazior 已提交
2518
	ath10k_peer_assoc_h_rates(ar, vif, sta, arg);
2519
	ath10k_peer_assoc_h_ht(ar, vif, sta, arg);
M
Michal Kazior 已提交
2520
	ath10k_peer_assoc_h_vht(ar, vif, sta, arg);
M
Michal Kazior 已提交
2521 2522
	ath10k_peer_assoc_h_qos(ar, vif, sta, arg);
	ath10k_peer_assoc_h_phymode(ar, vif, sta, arg);
2523

2524
	return 0;
2525 2526
}

M
Michal Kazior 已提交
2527 2528 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
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
2554 2555 2556 2557 2558 2559 2560 2561 2562
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;

2563 2564 2565
	if (ath10k_wmi_get_txbf_conf_scheme(ar) != WMI_TXBF_CONF_AFTER_ASSOC)
		return 0;

M
Michal Kazior 已提交
2566 2567 2568 2569 2570 2571 2572 2573 2574 2575 2576 2577 2578 2579 2580 2581 2582 2583 2584 2585 2586 2587 2588 2589 2590 2591 2592 2593 2594 2595 2596 2597 2598 2599 2600 2601 2602 2603 2604 2605 2606 2607 2608 2609 2610 2611 2612 2613 2614 2615 2616 2617 2618
	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;
}

2619 2620 2621 2622 2623 2624 2625
/* 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
2626
	struct ieee80211_sta_ht_cap ht_cap;
M
Michal Kazior 已提交
2627
	struct ieee80211_sta_vht_cap vht_cap;
2628
	struct wmi_peer_assoc_complete_arg peer_arg;
2629 2630 2631
	struct ieee80211_sta *ap_sta;
	int ret;

M
Michal Kazior 已提交
2632 2633
	lockdep_assert_held(&ar->conf_mutex);

2634 2635 2636
	ath10k_dbg(ar, ATH10K_DBG_MAC, "mac vdev %i assoc bssid %pM aid %d\n",
		   arvif->vdev_id, arvif->bssid, arvif->aid);

2637 2638 2639 2640
	rcu_read_lock();

	ap_sta = ieee80211_find_sta(vif, bss_conf->bssid);
	if (!ap_sta) {
2641
		ath10k_warn(ar, "failed to find station entry for bss %pM vdev %i\n",
2642
			    bss_conf->bssid, arvif->vdev_id);
2643 2644 2645 2646
		rcu_read_unlock();
		return;
	}

M
Michal Kazior 已提交
2647 2648 2649
	/* 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
2650
	vht_cap = ap_sta->vht_cap;
M
Michal Kazior 已提交
2651

M
Michal Kazior 已提交
2652
	ret = ath10k_peer_assoc_prepare(ar, vif, ap_sta, &peer_arg);
2653
	if (ret) {
2654
		ath10k_warn(ar, "failed to prepare peer assoc for %pM vdev %i: %d\n",
2655
			    bss_conf->bssid, arvif->vdev_id, ret);
2656 2657 2658 2659 2660 2661
		rcu_read_unlock();
		return;
	}

	rcu_read_unlock();

2662 2663
	ret = ath10k_wmi_peer_assoc(ar, &peer_arg);
	if (ret) {
2664
		ath10k_warn(ar, "failed to run peer assoc for %pM vdev %i: %d\n",
2665
			    bss_conf->bssid, arvif->vdev_id, ret);
2666 2667 2668
		return;
	}

M
Michal Kazior 已提交
2669 2670
	ret = ath10k_setup_peer_smps(ar, arvif, bss_conf->bssid, &ht_cap);
	if (ret) {
2671
		ath10k_warn(ar, "failed to setup peer SMPS for vdev %i: %d\n",
2672
			    arvif->vdev_id, ret);
M
Michal Kazior 已提交
2673 2674 2675
		return;
	}

M
Michal Kazior 已提交
2676 2677 2678 2679 2680 2681 2682
	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;
	}

2683
	ath10k_dbg(ar, ATH10K_DBG_MAC,
K
Kalle Valo 已提交
2684 2685 2686
		   "mac vdev %d up (associated) bssid %pM aid %d\n",
		   arvif->vdev_id, bss_conf->bssid, bss_conf->aid);

2687 2688
	WARN_ON(arvif->is_up);

2689
	arvif->aid = bss_conf->aid;
K
Kalle Valo 已提交
2690
	ether_addr_copy(arvif->bssid, bss_conf->bssid);
2691 2692 2693

	ret = ath10k_wmi_vdev_up(ar, arvif->vdev_id, arvif->aid, arvif->bssid);
	if (ret) {
2694
		ath10k_warn(ar, "failed to set vdev %d up: %d\n",
2695
			    arvif->vdev_id, ret);
2696 2697 2698 2699
		return;
	}

	arvif->is_up = true;
2700 2701 2702 2703 2704 2705 2706 2707 2708 2709 2710 2711

	/* 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;
	}
2712 2713 2714 2715 2716 2717 2718
}

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
2719
	struct ieee80211_sta_vht_cap vht_cap = {};
2720 2721
	int ret;

M
Michal Kazior 已提交
2722 2723
	lockdep_assert_held(&ar->conf_mutex);

2724 2725
	ath10k_dbg(ar, ATH10K_DBG_MAC, "mac vdev %i disassoc bssid %pM\n",
		   arvif->vdev_id, arvif->bssid);
K
Kalle Valo 已提交
2726

2727
	ret = ath10k_wmi_vdev_down(ar, arvif->vdev_id);
2728 2729 2730
	if (ret)
		ath10k_warn(ar, "faield to down vdev %i: %d\n",
			    arvif->vdev_id, ret);
2731

2732 2733
	arvif->def_wep_key_idx = -1;

M
Michal Kazior 已提交
2734 2735 2736 2737 2738 2739 2740
	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;
	}

2741
	arvif->is_up = false;
2742 2743

	cancel_delayed_work_sync(&arvif->connection_loss_work);
2744 2745
}

M
Michal Kazior 已提交
2746 2747 2748 2749
static int ath10k_station_assoc(struct ath10k *ar,
				struct ieee80211_vif *vif,
				struct ieee80211_sta *sta,
				bool reassoc)
2750
{
M
Michal Kazior 已提交
2751
	struct ath10k_vif *arvif = ath10k_vif_to_arvif(vif);
2752
	struct wmi_peer_assoc_complete_arg peer_arg;
2753 2754
	int ret = 0;

M
Michal Kazior 已提交
2755 2756
	lockdep_assert_held(&ar->conf_mutex);

M
Michal Kazior 已提交
2757
	ret = ath10k_peer_assoc_prepare(ar, vif, sta, &peer_arg);
2758
	if (ret) {
2759
		ath10k_warn(ar, "failed to prepare WMI peer assoc for %pM vdev %i: %i\n",
2760
			    sta->addr, arvif->vdev_id, ret);
2761 2762 2763 2764
		return ret;
	}

	ret = ath10k_wmi_peer_assoc(ar, &peer_arg);
2765
	if (ret) {
2766
		ath10k_warn(ar, "failed to run peer assoc for STA %pM vdev %i: %d\n",
2767
			    sta->addr, arvif->vdev_id, ret);
2768 2769 2770
		return ret;
	}

2771 2772 2773 2774 2775 2776
	/* 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);
2777
		if (ret) {
2778
			ath10k_warn(ar, "failed to setup peer SMPS for vdev %d: %d\n",
2779 2780 2781 2782
				    arvif->vdev_id, ret);
			return ret;
		}

2783 2784 2785 2786 2787 2788
		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;
		}
2789

2790 2791 2792 2793 2794 2795 2796 2797 2798 2799
		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;
			}
		}

2800 2801 2802 2803 2804 2805 2806 2807
		/* 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;
			}
2808
		}
2809 2810
	}

2811 2812 2813
	return ret;
}

M
Michal Kazior 已提交
2814 2815
static int ath10k_station_disassoc(struct ath10k *ar,
				   struct ieee80211_vif *vif,
2816 2817
				   struct ieee80211_sta *sta)
{
M
Michal Kazior 已提交
2818
	struct ath10k_vif *arvif = ath10k_vif_to_arvif(vif);
2819 2820
	int ret = 0;

M
Michal Kazior 已提交
2821 2822
	lockdep_assert_held(&ar->conf_mutex);

2823 2824 2825 2826
	if (!sta->wme) {
		arvif->num_legacy_stations--;
		ret = ath10k_recalc_rtscts_prot(arvif);
		if (ret) {
2827
			ath10k_warn(ar, "failed to recalculate rts/cts prot for vdev %d: %d\n",
2828 2829 2830 2831 2832
				    arvif->vdev_id, ret);
			return ret;
		}
	}

2833 2834
	ret = ath10k_clear_peer_keys(arvif, sta->addr);
	if (ret) {
2835
		ath10k_warn(ar, "failed to clear all peer wep keys for vdev %i: %d\n",
2836
			    arvif->vdev_id, ret);
2837 2838 2839 2840 2841 2842 2843 2844 2845 2846 2847 2848 2849 2850 2851 2852 2853 2854 2855 2856 2857 2858 2859
		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
2860 2861
	lockdep_assert_held(&ar->conf_mutex);

2862 2863 2864 2865 2866 2867 2868 2869 2870 2871 2872 2873 2874 2875 2876 2877 2878 2879 2880 2881 2882 2883 2884 2885 2886 2887 2888 2889 2890 2891 2892 2893 2894 2895 2896 2897
	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 =
2898
				!(channel->flags & IEEE80211_CHAN_NO_IR);
2899 2900 2901 2902

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

2903 2904 2905
			ch->chan_radar =
				!!(channel->flags & IEEE80211_CHAN_RADAR);

2906
			passive = channel->flags & IEEE80211_CHAN_NO_IR;
2907 2908 2909
			ch->passive = passive;

			ch->freq = channel->center_freq;
2910
			ch->band_center_freq1 = channel->center_freq;
2911
			ch->min_power = 0;
M
Michal Kazior 已提交
2912 2913 2914
			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;
2915 2916 2917 2918 2919 2920 2921 2922 2923 2924 2925 2926 2927
			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;

2928
			ath10k_dbg(ar, ATH10K_DBG_WMI,
K
Kalle Valo 已提交
2929 2930
				   "mac channel [%zd/%d] freq %d maxpower %d regpower %d antenna %d mode %d\n",
				    ch - arg.channels, arg.n_channels,
2931 2932 2933 2934 2935 2936 2937 2938 2939 2940 2941 2942 2943
				   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;
}

2944 2945 2946 2947 2948 2949 2950 2951 2952 2953 2954 2955 2956 2957 2958 2959
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;
}

2960
static void ath10k_regd_update(struct ath10k *ar)
2961 2962 2963
{
	struct reg_dmn_pair_mapping *regpair;
	int ret;
2964 2965
	enum wmi_dfs_region wmi_dfs_reg;
	enum nl80211_dfs_regions nl_dfs_reg;
2966

2967
	lockdep_assert_held(&ar->conf_mutex);
2968 2969 2970

	ret = ath10k_update_channel_list(ar);
	if (ret)
2971
		ath10k_warn(ar, "failed to update channel list: %d\n", ret);
2972 2973

	regpair = ar->ath_common.regulatory.regpair;
2974

2975 2976 2977 2978 2979 2980 2981
	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;
	}

2982 2983 2984
	/* Target allows setting up per-band regdomain but ath_common provides
	 * a combined one only */
	ret = ath10k_wmi_pdev_set_regdomain(ar,
2985 2986 2987
					    regpair->reg_domain,
					    regpair->reg_domain, /* 2ghz */
					    regpair->reg_domain, /* 5ghz */
2988
					    regpair->reg_2ghz_ctl,
2989 2990
					    regpair->reg_5ghz_ctl,
					    wmi_dfs_reg);
2991
	if (ret)
2992
		ath10k_warn(ar, "failed to set pdev regdomain: %d\n", ret);
2993
}
M
Michal Kazior 已提交
2994

2995 2996 2997 2998 2999
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
3000
	bool result;
3001 3002 3003

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

J
Janusz Dziedzic 已提交
3004
	if (config_enabled(CONFIG_ATH10K_DFS_CERTIFIED) && ar->dfs_detector) {
3005
		ath10k_dbg(ar, ATH10K_DBG_REGULATORY, "dfs region 0x%x\n",
J
Janusz Dziedzic 已提交
3006 3007 3008 3009
			   request->dfs_region);
		result = ar->dfs_detector->set_dfs_domain(ar->dfs_detector,
							  request->dfs_region);
		if (!result)
3010
			ath10k_warn(ar, "DFS region 0x%X not supported, will trigger radar for every pulse\n",
J
Janusz Dziedzic 已提交
3011 3012 3013
				    request->dfs_region);
	}

3014 3015 3016
	mutex_lock(&ar->conf_mutex);
	if (ar->state == ATH10K_STATE_ON)
		ath10k_regd_update(ar);
M
Michal Kazior 已提交
3017
	mutex_unlock(&ar->conf_mutex);
3018 3019 3020 3021 3022 3023
}

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

M
Michal Kazior 已提交
3024 3025 3026 3027 3028 3029 3030
enum ath10k_mac_tx_path {
	ATH10K_MAC_TX_HTT,
	ATH10K_MAC_TX_HTT_MGMT,
	ATH10K_MAC_TX_WMI_MGMT,
	ATH10K_MAC_TX_UNKNOWN,
};

M
Michal Kazior 已提交
3031
void ath10k_mac_tx_lock(struct ath10k *ar, int reason)
3032
{
M
Michal Kazior 已提交
3033
	lockdep_assert_held(&ar->htt.tx_lock);
3034

M
Michal Kazior 已提交
3035 3036 3037
	WARN_ON(reason >= ATH10K_TX_PAUSE_MAX);
	ar->tx_paused |= BIT(reason);
	ieee80211_stop_queues(ar->hw);
3038 3039
}

M
Michal Kazior 已提交
3040 3041
static void ath10k_mac_tx_unlock_iter(void *data, u8 *mac,
				      struct ieee80211_vif *vif)
3042
{
M
Michal Kazior 已提交
3043 3044
	struct ath10k *ar = data;
	struct ath10k_vif *arvif = ath10k_vif_to_arvif(vif);
3045

M
Michal Kazior 已提交
3046 3047
	if (arvif->tx_paused)
		return;
3048

M
Michal Kazior 已提交
3049
	ieee80211_wake_queue(ar->hw, arvif->vdev_id);
3050 3051
}

M
Michal Kazior 已提交
3052
void ath10k_mac_tx_unlock(struct ath10k *ar, int reason)
3053
{
M
Michal Kazior 已提交
3054
	lockdep_assert_held(&ar->htt.tx_lock);
3055

M
Michal Kazior 已提交
3056 3057
	WARN_ON(reason >= ATH10K_TX_PAUSE_MAX);
	ar->tx_paused &= ~BIT(reason);
3058

M
Michal Kazior 已提交
3059 3060
	if (ar->tx_paused)
		return;
3061

M
Michal Kazior 已提交
3062 3063 3064 3065
	ieee80211_iterate_active_interfaces_atomic(ar->hw,
						   IEEE80211_IFACE_ITER_RESUME_ALL,
						   ath10k_mac_tx_unlock_iter,
						   ar);
3066 3067

	ieee80211_wake_queue(ar->hw, ar->hw->offchannel_tx_hw_queue);
3068 3069
}

M
Michal Kazior 已提交
3070
void ath10k_mac_vif_tx_lock(struct ath10k_vif *arvif, int reason)
3071
{
M
Michal Kazior 已提交
3072
	struct ath10k *ar = arvif->ar;
3073

M
Michal Kazior 已提交
3074
	lockdep_assert_held(&ar->htt.tx_lock);
3075

M
Michal Kazior 已提交
3076 3077 3078 3079 3080 3081 3082 3083 3084 3085 3086 3087 3088 3089 3090 3091 3092 3093 3094 3095 3096 3097 3098
	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);
}

3099 3100 3101 3102 3103 3104 3105 3106
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);

3107 3108 3109 3110 3111 3112
	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);
3113 3114
		break;
	default:
3115 3116
		ath10k_warn(ar, "received unknown tx pause action %d on vdev %i, ignoring\n",
			    action, arvif->vdev_id);
3117 3118 3119 3120 3121 3122 3123 3124 3125 3126 3127 3128 3129 3130 3131 3132
		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;

3133 3134 3135
	if (arvif->vdev_id != arg->vdev_id)
		return;

3136 3137 3138
	ath10k_mac_vif_handle_tx_pause(arvif, arg->pause_id, arg->action);
}

3139 3140 3141
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)
3142 3143 3144 3145 3146 3147 3148 3149 3150 3151 3152 3153 3154 3155 3156
{
	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);
}

3157
static enum ath10k_hw_txrx_mode
3158 3159 3160 3161
ath10k_mac_tx_h_get_txmode(struct ath10k *ar,
			   struct ieee80211_vif *vif,
			   struct ieee80211_sta *sta,
			   struct sk_buff *skb)
3162 3163 3164 3165 3166 3167 3168 3169 3170 3171 3172 3173 3174 3175 3176 3177 3178 3179 3180 3181 3182 3183 3184 3185 3186 3187 3188 3189 3190 3191 3192
{
	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;

3193 3194 3195 3196 3197
	/* 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.
3198 3199
	 *
	 * FIXME: Check if raw mode works with TDLS.
3200 3201 3202 3203
	 */
	if (ieee80211_is_data_present(fc) && sta && sta->tdls)
		return ATH10K_HW_TXRX_ETHERNET;

3204 3205 3206
	if (test_bit(ATH10K_FLAG_RAW_MODE, &ar->dev_flags))
		return ATH10K_HW_TXRX_RAW;

3207 3208 3209
	return ATH10K_HW_TXRX_NATIVE_WIFI;
}

3210
static bool ath10k_tx_h_use_hwcrypto(struct ieee80211_vif *vif,
3211 3212 3213 3214
				     struct sk_buff *skb)
{
	const struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
	const struct ieee80211_hdr *hdr = (void *)skb->data;
3215 3216
	const u32 mask = IEEE80211_TX_INTFL_DONT_ENCRYPT |
			 IEEE80211_TX_CTL_INJECTED;
3217 3218 3219 3220

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

3221 3222
	if ((info->flags & mask) == mask)
		return false;
3223

3224 3225
	if (vif)
		return !ath10k_vif_to_arvif(vif)->nohwcrypt;
3226

3227 3228 3229
	return true;
}

M
Michal Kazior 已提交
3230 3231
/* HTT Tx uses Native Wifi tx mode which expects 802.11 frames without QoS
 * Control in the header.
3232
 */
M
Michal Kazior 已提交
3233
static void ath10k_tx_h_nwifi(struct ieee80211_hw *hw, struct sk_buff *skb)
3234 3235
{
	struct ieee80211_hdr *hdr = (void *)skb->data;
3236
	struct ath10k_skb_cb *cb = ATH10K_SKB_CB(skb);
3237 3238 3239 3240 3241 3242
	u8 *qos_ctl;

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

	qos_ctl = ieee80211_get_qos_ctl(hdr);
3243 3244 3245
	memmove(skb->data + IEEE80211_QOS_CTL_LEN,
		skb->data, (void *)qos_ctl - (void *)skb->data);
	skb_pull(skb, IEEE80211_QOS_CTL_LEN);
3246

3247 3248 3249
	/* 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.
3250
	 */
M
Michal Kazior 已提交
3251
	hdr = (void *)skb->data;
3252
	if (ieee80211_is_qos_nullfunc(hdr->frame_control))
3253
		cb->flags &= ~ATH10K_SKB_F_QOS;
3254 3255

	hdr->frame_control &= ~__cpu_to_le16(IEEE80211_STYPE_QOS_DATA);
3256 3257
}

3258 3259 3260 3261 3262 3263 3264 3265 3266 3267 3268 3269 3270 3271 3272 3273 3274 3275 3276 3277 3278 3279 3280 3281 3282
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;
3283 3284
}

M
Michal Kazior 已提交
3285 3286 3287
static void ath10k_tx_h_add_p2p_noa_ie(struct ath10k *ar,
				       struct ieee80211_vif *vif,
				       struct sk_buff *skb)
3288 3289 3290 3291 3292
{
	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 */
3293
	if (vif->type != NL80211_IFTYPE_AP || !vif->p2p)
3294 3295 3296 3297 3298 3299 3300 3301 3302 3303 3304 3305 3306 3307
		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
3308 3309
static void ath10k_mac_tx_h_fill_cb(struct ath10k *ar,
				    struct ieee80211_vif *vif,
M
Michal Kazior 已提交
3310
				    struct ieee80211_txq *txq,
M
Michal Kazior 已提交
3311 3312 3313 3314 3315 3316 3317 3318 3319 3320 3321 3322 3323 3324 3325 3326
				    struct sk_buff *skb)
{
	struct ieee80211_hdr *hdr = (void *)skb->data;
	struct ath10k_skb_cb *cb = ATH10K_SKB_CB(skb);

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

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

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

	cb->vif = vif;
M
Michal Kazior 已提交
3327
	cb->txq = txq;
M
Michal Kazior 已提交
3328 3329
}

3330
bool ath10k_mac_tx_frm_has_freq(struct ath10k *ar)
M
Michal Kazior 已提交
3331 3332 3333 3334 3335 3336 3337
{
	/* 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.
	 */
3338
	return (ar->htt.target_version_major >= 3 &&
3339 3340
		ar->htt.target_version_minor >= 4 &&
		ar->htt.op_version == ATH10K_FW_HTT_OP_VERSION_TLV);
M
Michal Kazior 已提交
3341 3342
}

3343
static int ath10k_mac_tx_wmi_mgmt(struct ath10k *ar, struct sk_buff *skb)
3344
{
3345
	struct sk_buff_head *q = &ar->wmi_mgmt_tx_queue;
3346
	int ret = 0;
3347

3348 3349 3350 3351 3352 3353
	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
3354 3355
	}

3356 3357
	__skb_queue_tail(q, skb);
	ieee80211_queue_work(ar->hw, &ar->wmi_mgmt_tx_work);
3358

3359 3360 3361 3362 3363 3364
unlock:
	spin_unlock_bh(&ar->data_lock);

	return ret;
}

M
Michal Kazior 已提交
3365 3366 3367 3368
static enum ath10k_mac_tx_path
ath10k_mac_tx_h_get_txpath(struct ath10k *ar,
			   struct sk_buff *skb,
			   enum ath10k_hw_txrx_mode txmode)
3369
{
M
Michal Kazior 已提交
3370
	switch (txmode) {
3371 3372 3373
	case ATH10K_HW_TXRX_RAW:
	case ATH10K_HW_TXRX_NATIVE_WIFI:
	case ATH10K_HW_TXRX_ETHERNET:
M
Michal Kazior 已提交
3374
		return ATH10K_MAC_TX_HTT;
3375 3376 3377
	case ATH10K_HW_TXRX_MGMT:
		if (test_bit(ATH10K_FW_FEATURE_HAS_WMI_MGMT_TX,
			     ar->fw_features))
M
Michal Kazior 已提交
3378
			return ATH10K_MAC_TX_WMI_MGMT;
3379
		else if (ar->htt.target_version_major >= 3)
M
Michal Kazior 已提交
3380
			return ATH10K_MAC_TX_HTT;
3381
		else
M
Michal Kazior 已提交
3382 3383 3384 3385 3386 3387 3388 3389
			return ATH10K_MAC_TX_HTT_MGMT;
	}

	return ATH10K_MAC_TX_UNKNOWN;
}

static int ath10k_mac_tx_submit(struct ath10k *ar,
				enum ath10k_hw_txrx_mode txmode,
3390
				enum ath10k_mac_tx_path txpath,
M
Michal Kazior 已提交
3391 3392 3393
				struct sk_buff *skb)
{
	struct ath10k_htt *htt = &ar->htt;
3394
	int ret = -EINVAL;
M
Michal Kazior 已提交
3395 3396 3397 3398 3399 3400 3401 3402 3403 3404 3405 3406 3407 3408

	switch (txpath) {
	case ATH10K_MAC_TX_HTT:
		ret = ath10k_htt_tx(htt, txmode, skb);
		break;
	case ATH10K_MAC_TX_HTT_MGMT:
		ret = ath10k_htt_mgmt_tx(htt, skb);
		break;
	case ATH10K_MAC_TX_WMI_MGMT:
		ret = ath10k_mac_tx_wmi_mgmt(ar, skb);
		break;
	case ATH10K_MAC_TX_UNKNOWN:
		WARN_ON_ONCE(1);
		ret = -EINVAL;
3409
		break;
3410
	}
3411 3412

	if (ret) {
3413 3414
		ath10k_warn(ar, "failed to transmit packet, dropping: %d\n",
			    ret);
3415 3416
		ieee80211_free_txskb(ar->hw, skb);
	}
M
Michal Kazior 已提交
3417 3418 3419 3420 3421 3422 3423 3424 3425 3426 3427

	return ret;
}

/* This function consumes the sk_buff regardless of return value as far as
 * caller is concerned so no freeing is necessary afterwards.
 */
static int ath10k_mac_tx(struct ath10k *ar,
			 struct ieee80211_vif *vif,
			 struct ieee80211_sta *sta,
			 enum ath10k_hw_txrx_mode txmode,
3428
			 enum ath10k_mac_tx_path txpath,
M
Michal Kazior 已提交
3429 3430 3431 3432 3433 3434 3435 3436 3437 3438 3439 3440 3441 3442 3443 3444 3445 3446 3447 3448 3449 3450 3451 3452 3453 3454 3455 3456 3457 3458 3459 3460 3461 3462 3463 3464 3465 3466 3467
			 struct sk_buff *skb)
{
	struct ieee80211_hw *hw = ar->hw;
	struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
	int ret;

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

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

	if (info->flags & IEEE80211_TX_CTL_TX_OFFCHAN) {
		if (!ath10k_mac_tx_frm_has_freq(ar)) {
			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 0;
		}
	}

3468
	ret = ath10k_mac_tx_submit(ar, txmode, txpath, skb);
M
Michal Kazior 已提交
3469 3470 3471 3472 3473 3474
	if (ret) {
		ath10k_warn(ar, "failed to submit frame: %d\n", ret);
		return ret;
	}

	return 0;
3475 3476 3477 3478 3479 3480 3481 3482 3483 3484 3485 3486 3487 3488 3489 3490 3491 3492 3493
}

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

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

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

void ath10k_offchan_tx_work(struct work_struct *work)
{
	struct ath10k *ar = container_of(work, struct ath10k, offchan_tx_work);
	struct ath10k_peer *peer;
M
Michal Kazior 已提交
3494
	struct ath10k_vif *arvif;
M
Michal Kazior 已提交
3495
	enum ath10k_hw_txrx_mode txmode;
3496
	enum ath10k_mac_tx_path txpath;
3497
	struct ieee80211_hdr *hdr;
M
Michal Kazior 已提交
3498 3499
	struct ieee80211_vif *vif;
	struct ieee80211_sta *sta;
3500 3501 3502 3503
	struct sk_buff *skb;
	const u8 *peer_addr;
	int vdev_id;
	int ret;
3504
	unsigned long time_left;
3505
	bool tmp_peer_created = false;
3506 3507 3508 3509 3510 3511 3512 3513 3514 3515 3516 3517 3518 3519 3520

	/* 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);

3521
		ath10k_dbg(ar, ATH10K_DBG_MAC, "mac offchannel skb %p\n",
3522 3523 3524 3525 3526 3527
			   skb);

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

		spin_lock_bh(&ar->data_lock);
3528
		vdev_id = ar->scan.vdev_id;
3529 3530 3531 3532
		peer = ath10k_peer_find(ar, vdev_id, peer_addr);
		spin_unlock_bh(&ar->data_lock);

		if (peer)
K
Kalle Valo 已提交
3533
			/* FIXME: should this use ath10k_warn()? */
3534
			ath10k_dbg(ar, ATH10K_DBG_MAC, "peer %pM on vdev %d already present\n",
3535 3536 3537
				   peer_addr, vdev_id);

		if (!peer) {
M
Michal Kazior 已提交
3538 3539
			ret = ath10k_peer_create(ar, NULL, NULL, vdev_id,
						 peer_addr,
3540
						 WMI_PEER_TYPE_DEFAULT);
3541
			if (ret)
3542
				ath10k_warn(ar, "failed to create peer %pM on vdev %d: %d\n",
3543
					    peer_addr, vdev_id, ret);
3544
			tmp_peer_created = (ret == 0);
3545 3546 3547
		}

		spin_lock_bh(&ar->data_lock);
3548
		reinit_completion(&ar->offchan_tx_completed);
3549 3550 3551
		ar->offchan_tx_skb = skb;
		spin_unlock_bh(&ar->data_lock);

M
Michal Kazior 已提交
3552 3553 3554 3555 3556 3557 3558 3559 3560 3561 3562 3563 3564 3565
		/* It's safe to access vif and sta - conf_mutex guarantees that
		 * sta_state() and remove_interface() are locked exclusively
		 * out wrt to this offchannel worker.
		 */
		arvif = ath10k_get_arvif(ar, vdev_id);
		if (arvif) {
			vif = arvif->vif;
			sta = ieee80211_find_sta(vif, peer_addr);
		} else {
			vif = NULL;
			sta = NULL;
		}

		txmode = ath10k_mac_tx_h_get_txmode(ar, vif, sta, skb);
3566
		txpath = ath10k_mac_tx_h_get_txpath(ar, skb, txmode);
M
Michal Kazior 已提交
3567

3568
		ret = ath10k_mac_tx(ar, vif, sta, txmode, txpath, skb);
M
Michal Kazior 已提交
3569 3570 3571 3572 3573
		if (ret) {
			ath10k_warn(ar, "failed to transmit offchannel frame: %d\n",
				    ret);
			/* not serious */
		}
3574

3575 3576 3577
		time_left =
		wait_for_completion_timeout(&ar->offchan_tx_completed, 3 * HZ);
		if (time_left == 0)
3578
			ath10k_warn(ar, "timed out waiting for offchannel skb %p\n",
3579 3580
				    skb);

3581
		if (!peer && tmp_peer_created) {
3582 3583
			ret = ath10k_peer_delete(ar, vdev_id, peer_addr);
			if (ret)
3584
				ath10k_warn(ar, "failed to delete peer %pM on vdev %d: %d\n",
3585 3586 3587 3588 3589 3590 3591
					    peer_addr, vdev_id, ret);
		}

		mutex_unlock(&ar->conf_mutex);
	}
}

3592 3593 3594 3595 3596 3597 3598 3599 3600 3601 3602 3603 3604 3605 3606 3607 3608 3609 3610 3611 3612 3613 3614 3615 3616
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);
3617
		if (ret) {
3618
			ath10k_warn(ar, "failed to transmit management frame via WMI: %d\n",
3619
				    ret);
3620 3621
			ieee80211_free_txskb(ar->hw, skb);
		}
3622 3623 3624
	}
}

M
Michal Kazior 已提交
3625 3626 3627 3628 3629 3630 3631 3632 3633 3634 3635 3636 3637
static void ath10k_mac_txq_init(struct ieee80211_txq *txq)
{
	struct ath10k_txq *artxq = (void *)txq->drv_priv;

	if (!txq)
		return;

	INIT_LIST_HEAD(&artxq->list);
}

static void ath10k_mac_txq_unref(struct ath10k *ar, struct ieee80211_txq *txq)
{
	struct ath10k_txq *artxq = (void *)txq->drv_priv;
M
Michal Kazior 已提交
3638 3639 3640
	struct ath10k_skb_cb *cb;
	struct sk_buff *msdu;
	int msdu_id;
M
Michal Kazior 已提交
3641 3642 3643 3644 3645 3646 3647 3648

	if (!txq)
		return;

	spin_lock_bh(&ar->txqs_lock);
	if (!list_empty(&artxq->list))
		list_del_init(&artxq->list);
	spin_unlock_bh(&ar->txqs_lock);
M
Michal Kazior 已提交
3649 3650 3651 3652 3653 3654 3655 3656

	spin_lock_bh(&ar->htt.tx_lock);
	idr_for_each_entry(&ar->htt.pending_tx, msdu, msdu_id) {
		cb = ATH10K_SKB_CB(msdu);
		if (cb->txq == txq)
			cb->txq = NULL;
	}
	spin_unlock_bh(&ar->htt.tx_lock);
M
Michal Kazior 已提交
3657 3658
}

M
Michal Kazior 已提交
3659 3660 3661 3662 3663 3664 3665 3666 3667 3668 3669 3670 3671 3672 3673 3674 3675 3676 3677 3678
struct ieee80211_txq *ath10k_mac_txq_lookup(struct ath10k *ar,
					    u16 peer_id,
					    u8 tid)
{
	struct ath10k_peer *peer;

	lockdep_assert_held(&ar->data_lock);

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

	if (peer->sta)
		return peer->sta->txq[tid];
	else if (peer->vif)
		return peer->vif->txq;
	else
		return NULL;
}

M
Michal Kazior 已提交
3679 3680 3681
static bool ath10k_mac_tx_can_push(struct ieee80211_hw *hw,
				   struct ieee80211_txq *txq)
{
M
Michal Kazior 已提交
3682 3683 3684 3685 3686 3687 3688 3689 3690 3691 3692 3693 3694 3695 3696
	struct ath10k *ar = hw->priv;
	struct ath10k_txq *artxq = (void *)txq->drv_priv;

	/* No need to get locks */

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

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

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

	return false;
M
Michal Kazior 已提交
3697 3698
}

M
Michal Kazior 已提交
3699 3700
int ath10k_mac_tx_push_txq(struct ieee80211_hw *hw,
			   struct ieee80211_txq *txq)
M
Michal Kazior 已提交
3701 3702 3703
{
	struct ath10k *ar = hw->priv;
	struct ath10k_htt *htt = &ar->htt;
3704
	struct ath10k_txq *artxq = (void *)txq->drv_priv;
M
Michal Kazior 已提交
3705 3706 3707 3708 3709
	struct ieee80211_vif *vif = txq->vif;
	struct ieee80211_sta *sta = txq->sta;
	enum ath10k_hw_txrx_mode txmode;
	enum ath10k_mac_tx_path txpath;
	struct sk_buff *skb;
M
Michal Kazior 已提交
3710
	size_t skb_len;
M
Michal Kazior 已提交
3711 3712 3713
	int ret;

	spin_lock_bh(&ar->htt.tx_lock);
3714
	ret = ath10k_htt_tx_inc_pending(htt);
M
Michal Kazior 已提交
3715 3716 3717 3718 3719 3720 3721 3722
	spin_unlock_bh(&ar->htt.tx_lock);

	if (ret)
		return ret;

	skb = ieee80211_tx_dequeue(hw, txq);
	if (!skb) {
		spin_lock_bh(&ar->htt.tx_lock);
3723
		ath10k_htt_tx_dec_pending(htt);
M
Michal Kazior 已提交
3724 3725 3726 3727 3728
		spin_unlock_bh(&ar->htt.tx_lock);

		return -ENOENT;
	}

M
Michal Kazior 已提交
3729
	ath10k_mac_tx_h_fill_cb(ar, vif, txq, skb);
M
Michal Kazior 已提交
3730

M
Michal Kazior 已提交
3731
	skb_len = skb->len;
M
Michal Kazior 已提交
3732 3733 3734 3735 3736 3737 3738 3739
	txmode = ath10k_mac_tx_h_get_txmode(ar, vif, sta, skb);
	txpath = ath10k_mac_tx_h_get_txpath(ar, skb, txmode);

	ret = ath10k_mac_tx(ar, vif, sta, txmode, txpath, skb);
	if (unlikely(ret)) {
		ath10k_warn(ar, "failed to push frame: %d\n", ret);

		spin_lock_bh(&ar->htt.tx_lock);
3740
		ath10k_htt_tx_dec_pending(htt);
M
Michal Kazior 已提交
3741 3742 3743 3744 3745
		spin_unlock_bh(&ar->htt.tx_lock);

		return ret;
	}

3746 3747 3748 3749
	spin_lock_bh(&ar->htt.tx_lock);
	artxq->num_fw_queued++;
	spin_unlock_bh(&ar->htt.tx_lock);

M
Michal Kazior 已提交
3750
	return skb_len;
M
Michal Kazior 已提交
3751 3752 3753 3754 3755 3756 3757 3758 3759 3760 3761 3762 3763 3764 3765 3766 3767 3768 3769 3770 3771 3772
}

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

	spin_lock_bh(&ar->txqs_lock);
	rcu_read_lock();

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

		/* Prevent aggressive sta/tid taking over tx queue */
		max = 16;
3773 3774
		ret = 0;
		while (ath10k_mac_tx_can_push(hw, txq) && max--) {
M
Michal Kazior 已提交
3775 3776 3777 3778 3779 3780
			ret = ath10k_mac_tx_push_txq(hw, txq);
			if (ret < 0)
				break;
		}

		list_del_init(&artxq->list);
M
Michal Kazior 已提交
3781 3782 3783
		if (ret != -ENOENT)
			list_add_tail(&artxq->list, &ar->txqs);

3784
		ath10k_htt_tx_txq_update(hw, txq);
M
Michal Kazior 已提交
3785

M
Michal Kazior 已提交
3786
		if (artxq == last || (ret < 0 && ret != -ENOENT))
M
Michal Kazior 已提交
3787 3788 3789 3790 3791 3792 3793
			break;
	}

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

3794 3795 3796 3797
/************/
/* Scanning */
/************/

3798
void __ath10k_scan_finish(struct ath10k *ar)
3799
{
3800
	lockdep_assert_held(&ar->data_lock);
3801

3802 3803 3804 3805
	switch (ar->scan.state) {
	case ATH10K_SCAN_IDLE:
		break;
	case ATH10K_SCAN_RUNNING:
3806 3807
	case ATH10K_SCAN_ABORTING:
		if (!ar->scan.is_roc)
3808 3809 3810
			ieee80211_scan_completed(ar->hw,
						 (ar->scan.state ==
						  ATH10K_SCAN_ABORTING));
3811 3812
		else if (ar->scan.roc_notify)
			ieee80211_remain_on_channel_expired(ar->hw);
3813 3814 3815 3816
		/* fall through */
	case ATH10K_SCAN_STARTING:
		ar->scan.state = ATH10K_SCAN_IDLE;
		ar->scan_channel = NULL;
M
Michal Kazior 已提交
3817
		ar->scan.roc_freq = 0;
3818 3819 3820 3821
		ath10k_offchan_tx_purge(ar);
		cancel_delayed_work(&ar->scan.timeout);
		complete_all(&ar->scan.completed);
		break;
3822
	}
3823
}
3824

3825 3826 3827 3828
void ath10k_scan_finish(struct ath10k *ar)
{
	spin_lock_bh(&ar->data_lock);
	__ath10k_scan_finish(ar);
3829 3830 3831
	spin_unlock_bh(&ar->data_lock);
}

3832
static int ath10k_scan_stop(struct ath10k *ar)
3833 3834 3835 3836 3837 3838 3839 3840 3841 3842 3843 3844
{
	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) {
3845
		ath10k_warn(ar, "failed to stop wmi scan: %d\n", ret);
3846
		goto out;
3847 3848 3849
	}

	ret = wait_for_completion_timeout(&ar->scan.completed, 3*HZ);
3850
	if (ret == 0) {
3851
		ath10k_warn(ar, "failed to receive scan abortion completion: timed out\n");
3852 3853 3854 3855
		ret = -ETIMEDOUT;
	} else if (ret > 0) {
		ret = 0;
	}
3856

3857 3858 3859 3860 3861 3862 3863 3864 3865 3866 3867 3868 3869 3870 3871 3872 3873 3874 3875 3876 3877
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);
3878 3879

	spin_lock_bh(&ar->data_lock);
3880 3881 3882 3883 3884 3885 3886 3887 3888

	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:
3889
		ath10k_warn(ar, "refusing scan abortion due to invalid scan state: %s (%d)\n",
3890 3891 3892 3893 3894 3895 3896 3897 3898
			    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)
3899
			ath10k_warn(ar, "failed to abort scan: %d\n", ret);
3900 3901 3902

		spin_lock_bh(&ar->data_lock);
		break;
3903
	}
3904

3905
	spin_unlock_bh(&ar->data_lock);
3906
}
3907

3908 3909 3910 3911 3912 3913 3914 3915
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);
3916 3917 3918 3919 3920 3921 3922 3923 3924 3925 3926 3927 3928 3929 3930
}

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) {
3931 3932
		ret = ath10k_scan_stop(ar);
		if (ret)
3933
			ath10k_warn(ar, "failed to stop scan: %d\n", ret);
3934 3935

		return -ETIMEDOUT;
3936 3937
	}

3938 3939 3940 3941 3942 3943 3944 3945 3946 3947 3948
	/* 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);

3949 3950 3951 3952 3953 3954 3955
	return 0;
}

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

M
Michal Kazior 已提交
3956 3957 3958
static void ath10k_mac_op_tx(struct ieee80211_hw *hw,
			     struct ieee80211_tx_control *control,
			     struct sk_buff *skb)
3959
{
M
Michal Kazior 已提交
3960
	struct ath10k *ar = hw->priv;
3961
	struct ath10k_htt *htt = &ar->htt;
3962
	struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
M
Michal Kazior 已提交
3963
	struct ieee80211_vif *vif = info->control.vif;
3964
	struct ieee80211_sta *sta = control->sta;
M
Michal Kazior 已提交
3965
	struct ieee80211_txq *txq = NULL;
3966
	struct ieee80211_hdr *hdr = (void *)skb->data;
M
Michal Kazior 已提交
3967
	enum ath10k_hw_txrx_mode txmode;
3968 3969 3970 3971
	enum ath10k_mac_tx_path txpath;
	bool is_htt;
	bool is_mgmt;
	bool is_presp;
M
Michal Kazior 已提交
3972
	int ret;
3973

M
Michal Kazior 已提交
3974
	ath10k_mac_tx_h_fill_cb(ar, vif, txq, skb);
3975

M
Michal Kazior 已提交
3976
	txmode = ath10k_mac_tx_h_get_txmode(ar, vif, sta, skb);
3977 3978 3979
	txpath = ath10k_mac_tx_h_get_txpath(ar, skb, txmode);
	is_htt = (txpath == ATH10K_MAC_TX_HTT ||
		  txpath == ATH10K_MAC_TX_HTT_MGMT);
3980
	is_mgmt = (txpath == ATH10K_MAC_TX_HTT_MGMT);
3981

3982 3983 3984 3985
	if (is_htt) {
		spin_lock_bh(&ar->htt.tx_lock);
		is_presp = ieee80211_is_probe_resp(hdr->frame_control);

3986
		ret = ath10k_htt_tx_inc_pending(htt);
3987 3988 3989 3990 3991 3992 3993 3994
		if (ret) {
			ath10k_warn(ar, "failed to increase tx pending count: %d, dropping\n",
				    ret);
			spin_unlock_bh(&ar->htt.tx_lock);
			ieee80211_free_txskb(ar->hw, skb);
			return;
		}

3995 3996 3997 3998 3999 4000 4001 4002 4003
		ret = ath10k_htt_tx_mgmt_inc_pending(htt, is_mgmt, is_presp);
		if (ret) {
			ath10k_warn(ar, "failed to increase tx mgmt pending count: %d, dropping\n",
				    ret);
			ath10k_htt_tx_dec_pending(htt);
			spin_unlock_bh(&ar->htt.tx_lock);
			ieee80211_free_txskb(ar->hw, skb);
			return;
		}
4004 4005 4006 4007 4008
		spin_unlock_bh(&ar->htt.tx_lock);
	}

	ret = ath10k_mac_tx(ar, vif, sta, txmode, txpath, skb);
	if (ret) {
M
Michal Kazior 已提交
4009
		ath10k_warn(ar, "failed to transmit frame: %d\n", ret);
4010 4011
		if (is_htt) {
			spin_lock_bh(&ar->htt.tx_lock);
4012 4013 4014
			ath10k_htt_tx_dec_pending(htt);
			if (is_mgmt)
				ath10k_htt_tx_mgmt_dec_pending(htt);
4015 4016 4017 4018
			spin_unlock_bh(&ar->htt.tx_lock);
		}
		return;
	}
4019 4020
}

M
Michal Kazior 已提交
4021 4022 4023 4024 4025 4026
static void ath10k_mac_op_wake_tx_queue(struct ieee80211_hw *hw,
					struct ieee80211_txq *txq)
{
	struct ath10k *ar = hw->priv;
	struct ath10k_txq *artxq = (void *)txq->drv_priv;

4027 4028 4029 4030
	spin_lock_bh(&ar->txqs_lock);
	if (list_empty(&artxq->list))
		list_add_tail(&artxq->list, &ar->txqs);
	spin_unlock_bh(&ar->txqs_lock);
M
Michal Kazior 已提交
4031

4032
	if (ath10k_mac_tx_can_push(hw, txq))
M
Michal Kazior 已提交
4033
		tasklet_schedule(&ar->htt.txrx_compl_task);
4034 4035

	ath10k_htt_tx_txq_update(hw, txq);
M
Michal Kazior 已提交
4036 4037
}

4038
/* Must not be called with conf_mutex held as workers can use that also. */
M
Michal Kazior 已提交
4039
void ath10k_drain_tx(struct ath10k *ar)
4040 4041 4042 4043 4044 4045 4046 4047 4048 4049 4050
{
	/* 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);
}

4051
void ath10k_halt(struct ath10k *ar)
4052
{
4053 4054
	struct ath10k_vif *arvif;

4055 4056
	lockdep_assert_held(&ar->conf_mutex);

4057 4058 4059
	clear_bit(ATH10K_CAC_RUNNING, &ar->dev_flags);
	ar->filter_flags = 0;
	ar->monitor = false;
M
Michal Kazior 已提交
4060
	ar->monitor_arvif = NULL;
4061 4062

	if (ar->monitor_started)
M
Michal Kazior 已提交
4063
		ath10k_monitor_stop(ar);
4064 4065

	ar->monitor_started = false;
M
Michal Kazior 已提交
4066
	ar->tx_paused = 0;
M
Michal Kazior 已提交
4067

4068
	ath10k_scan_finish(ar);
4069 4070 4071 4072 4073
	ath10k_peer_cleanup_all(ar);
	ath10k_core_stop(ar);
	ath10k_hif_power_down(ar);

	spin_lock_bh(&ar->data_lock);
4074 4075
	list_for_each_entry(arvif, &ar->arvifs, list)
		ath10k_mac_vif_beacon_cleanup(arvif);
4076 4077 4078
	spin_unlock_bh(&ar->data_lock);
}

4079 4080 4081 4082 4083 4084
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);

4085 4086
	*tx_ant = ar->cfg_tx_chainmask;
	*rx_ant = ar->cfg_rx_chainmask;
4087 4088 4089 4090 4091 4092

	mutex_unlock(&ar->conf_mutex);

	return 0;
}

4093 4094 4095 4096 4097 4098 4099 4100 4101 4102 4103 4104 4105
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);
}

4106 4107 4108 4109 4110 4111 4112 4113 4114 4115 4116 4117 4118 4119 4120 4121 4122 4123 4124 4125 4126 4127 4128 4129 4130 4131 4132 4133 4134 4135 4136 4137 4138 4139 4140 4141 4142 4143 4144 4145 4146 4147 4148 4149 4150 4151 4152 4153 4154 4155 4156 4157 4158 4159 4160 4161 4162 4163 4164 4165 4166 4167 4168 4169 4170 4171 4172 4173 4174 4175 4176 4177 4178 4179 4180 4181 4182 4183 4184 4185 4186 4187 4188 4189 4190 4191 4192 4193
static int ath10k_mac_get_vht_cap_bf_sts(struct ath10k *ar)
{
	int nsts = ar->vht_cap_info;

	nsts &= IEEE80211_VHT_CAP_BEAMFORMEE_STS_MASK;
	nsts >>= IEEE80211_VHT_CAP_BEAMFORMEE_STS_SHIFT;

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

	return nsts;
}

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

	sound_dim &= IEEE80211_VHT_CAP_SOUNDING_DIMENSIONS_MASK;
	sound_dim >>= IEEE80211_VHT_CAP_SOUNDING_DIMENSIONS_SHIFT;

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

	return sound_dim;
}

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

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

	if (ar->vht_cap_info & (IEEE80211_VHT_CAP_SU_BEAMFORMEE_CAPABLE |
				IEEE80211_VHT_CAP_MU_BEAMFORMEE_CAPABLE)) {
		val = ath10k_mac_get_vht_cap_bf_sts(ar);
		val <<= IEEE80211_VHT_CAP_BEAMFORMEE_STS_SHIFT;
		val &= IEEE80211_VHT_CAP_BEAMFORMEE_STS_MASK;

		vht_cap.cap |= val;
	}

	if (ar->vht_cap_info & (IEEE80211_VHT_CAP_SU_BEAMFORMER_CAPABLE |
				IEEE80211_VHT_CAP_MU_BEAMFORMER_CAPABLE)) {
		val = ath10k_mac_get_vht_cap_bf_sound_dim(ar);
		val <<= IEEE80211_VHT_CAP_SOUNDING_DIMENSIONS_SHIFT;
		val &= IEEE80211_VHT_CAP_SOUNDING_DIMENSIONS_MASK;

		vht_cap.cap |= val;
	}

	mcs_map = 0;
	for (i = 0; i < 8; i++) {
		if ((i < ar->num_rf_chains) && (ar->cfg_tx_chainmask & BIT(i)))
			mcs_map |= IEEE80211_VHT_MCS_SUPPORT_0_9 << (i * 2);
		else
			mcs_map |= IEEE80211_VHT_MCS_NOT_SUPPORTED << (i * 2);
	}

	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;
4194 4195
	ht_cap.cap |=
		WLAN_HT_CAP_SM_PS_DISABLED << IEEE80211_HT_CAP_SM_PS_SHIFT;
4196 4197 4198 4199 4200 4201 4202 4203 4204 4205 4206 4207 4208 4209 4210 4211 4212 4213 4214 4215 4216 4217 4218 4219 4220 4221 4222 4223 4224 4225 4226 4227 4228 4229 4230 4231 4232 4233 4234 4235 4236 4237 4238 4239 4240 4241 4242 4243 4244 4245 4246

	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;

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

	ht_cap.mcs.tx_params |= IEEE80211_HT_MCS_TX_DEFINED;

	return ht_cap;
}

4247 4248 4249 4250 4251 4252 4253 4254 4255 4256 4257 4258 4259 4260 4261 4262 4263 4264 4265 4266 4267 4268 4269
static void ath10k_mac_setup_ht_vht_cap(struct ath10k *ar)
{
	struct ieee80211_supported_band *band;
	struct ieee80211_sta_vht_cap vht_cap;
	struct ieee80211_sta_ht_cap ht_cap;

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

	if (ar->phy_capability & WHAL_WLAN_11G_CAPABILITY) {
		band = &ar->mac.sbands[IEEE80211_BAND_2GHZ];
		band->ht_cap = ht_cap;

		/* Enable the VHT support at 2.4 GHz */
		band->vht_cap = vht_cap;
	}
	if (ar->phy_capability & WHAL_WLAN_11A_CAPABILITY) {
		band = &ar->mac.sbands[IEEE80211_BAND_5GHZ];
		band->ht_cap = ht_cap;
		band->vht_cap = vht_cap;
	}
}

4270 4271 4272 4273 4274 4275
static int __ath10k_set_antenna(struct ath10k *ar, u32 tx_ant, u32 rx_ant)
{
	int ret;

	lockdep_assert_held(&ar->conf_mutex);

4276 4277 4278
	ath10k_check_chain_mask(ar, tx_ant, "tx");
	ath10k_check_chain_mask(ar, rx_ant, "rx");

4279 4280 4281 4282 4283 4284 4285 4286 4287 4288
	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) {
4289
		ath10k_warn(ar, "failed to set tx-chainmask: %d, req 0x%x\n",
4290 4291 4292 4293 4294 4295 4296
			    ret, tx_ant);
		return ret;
	}

	ret = ath10k_wmi_pdev_set_param(ar, ar->wmi.pdev_param->rx_chain_mask,
					rx_ant);
	if (ret) {
4297
		ath10k_warn(ar, "failed to set rx-chainmask: %d, req 0x%x\n",
4298 4299 4300 4301
			    ret, rx_ant);
		return ret;
	}

4302 4303 4304
	/* Reload HT/VHT capability */
	ath10k_mac_setup_ht_vht_cap(ar);

4305 4306 4307 4308 4309 4310 4311 4312 4313 4314 4315 4316 4317 4318
	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;
}

4319 4320 4321
static int ath10k_start(struct ieee80211_hw *hw)
{
	struct ath10k *ar = hw->priv;
4322
	u32 param;
4323
	int ret = 0;
4324

4325 4326 4327 4328 4329 4330 4331
	/*
	 * 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
4332 4333
	mutex_lock(&ar->conf_mutex);

4334 4335 4336 4337 4338 4339 4340 4341 4342 4343 4344 4345
	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);
4346
		ret = -EINVAL;
4347
		goto err;
K
Kalle Valo 已提交
4348 4349 4350
	case ATH10K_STATE_UTF:
		ret = -EBUSY;
		goto err;
4351 4352 4353 4354
	}

	ret = ath10k_hif_power_up(ar);
	if (ret) {
4355
		ath10k_err(ar, "Could not init hif: %d\n", ret);
4356
		goto err_off;
4357 4358
	}

K
Kalle Valo 已提交
4359
	ret = ath10k_core_start(ar, ATH10K_FIRMWARE_MODE_NORMAL);
4360
	if (ret) {
4361
		ath10k_err(ar, "Could not init core: %d\n", ret);
4362
		goto err_power_down;
4363 4364
	}

4365 4366
	param = ar->wmi.pdev_param->pmf_qos;
	ret = ath10k_wmi_pdev_set_param(ar, param, 1);
4367
	if (ret) {
4368
		ath10k_warn(ar, "failed to enable PMF QOS: %d\n", ret);
4369 4370
		goto err_core_stop;
	}
4371

4372 4373
	param = ar->wmi.pdev_param->dynamic_bw;
	ret = ath10k_wmi_pdev_set_param(ar, param, 1);
4374
	if (ret) {
4375
		ath10k_warn(ar, "failed to enable dynamic BW: %d\n", ret);
4376 4377
		goto err_core_stop;
	}
4378

4379 4380 4381 4382 4383 4384 4385 4386 4387
	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
4388
	if (test_bit(WMI_SERVICE_BURST, ar->wmi.svc_map)) {
4389 4390
		param = ar->wmi.pdev_param->burst_enable;
		ret = ath10k_wmi_pdev_set_param(ar, param, 0);
J
Janusz Dziedzic 已提交
4391 4392 4393 4394 4395 4396
		if (ret) {
			ath10k_warn(ar, "failed to disable burst: %d\n", ret);
			goto err_core_stop;
		}
	}

4397
	__ath10k_set_antenna(ar, ar->cfg_tx_chainmask, ar->cfg_rx_chainmask);
4398

4399 4400 4401 4402 4403 4404 4405 4406 4407
	/*
	 * 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.
	 */

4408 4409
	param = ar->wmi.pdev_param->arp_ac_override;
	ret = ath10k_wmi_pdev_set_param(ar, param, 0);
4410
	if (ret) {
4411
		ath10k_warn(ar, "failed to set arp ac override parameter: %d\n",
4412
			    ret);
4413
		goto err_core_stop;
4414 4415
	}

M
Maharaja 已提交
4416 4417 4418 4419 4420 4421 4422 4423 4424 4425 4426 4427
	if (test_bit(ATH10K_FW_FEATURE_SUPPORTS_ADAPTIVE_CCA,
		     ar->fw_features)) {
		ret = ath10k_wmi_pdev_enable_adaptive_cca(ar, 1,
							  WMI_CCA_DETECT_LEVEL_AUTO,
							  WMI_CCA_DETECT_MARGIN_AUTO);
		if (ret) {
			ath10k_warn(ar, "failed to enable adaptive cca: %d\n",
				    ret);
			goto err_core_stop;
		}
	}

4428 4429
	param = ar->wmi.pdev_param->ani_enable;
	ret = ath10k_wmi_pdev_set_param(ar, param, 1);
4430 4431 4432 4433 4434 4435
	if (ret) {
		ath10k_warn(ar, "failed to enable ani by default: %d\n",
			    ret);
		goto err_core_stop;
	}

4436 4437
	ar->ani_enabled = true;

4438 4439 4440 4441 4442 4443 4444 4445 4446 4447 4448 4449
	if (test_bit(WMI_SERVICE_PEER_STATS, ar->wmi.svc_map)) {
		param = ar->wmi.pdev_param->peer_stats_update_period;
		ret = ath10k_wmi_pdev_set_param(ar, param,
						PEER_DEFAULT_STATS_UPDATE_PERIOD);
		if (ret) {
			ath10k_warn(ar,
				    "failed to set peer stats period : %d\n",
				    ret);
			goto err_core_stop;
		}
	}

4450
	ar->num_started_vdevs = 0;
4451 4452
	ath10k_regd_update(ar);

4453
	ath10k_spectral_start(ar);
4454
	ath10k_thermal_set_throttling(ar);
4455

4456 4457 4458 4459 4460 4461 4462 4463 4464 4465 4466 4467 4468
	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
4469
	mutex_unlock(&ar->conf_mutex);
4470
	return ret;
4471 4472 4473 4474 4475 4476
}

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

4477 4478
	ath10k_drain_tx(ar);

M
Michal Kazior 已提交
4479
	mutex_lock(&ar->conf_mutex);
4480
	if (ar->state != ATH10K_STATE_OFF) {
4481
		ath10k_halt(ar);
4482 4483
		ar->state = ATH10K_STATE_OFF;
	}
M
Michal Kazior 已提交
4484 4485
	mutex_unlock(&ar->conf_mutex);

4486
	cancel_delayed_work_sync(&ar->scan.timeout);
4487
	cancel_work_sync(&ar->restart_work);
4488 4489
}

4490
static int ath10k_config_ps(struct ath10k *ar)
4491
{
4492 4493
	struct ath10k_vif *arvif;
	int ret = 0;
4494 4495 4496

	lockdep_assert_held(&ar->conf_mutex);

4497 4498 4499
	list_for_each_entry(arvif, &ar->arvifs, list) {
		ret = ath10k_mac_vif_setup_ps(arvif);
		if (ret) {
4500
			ath10k_warn(ar, "failed to setup powersave: %d\n", ret);
4501 4502 4503
			break;
		}
	}
4504

4505
	return ret;
4506 4507
}

4508 4509 4510 4511 4512 4513 4514 4515 4516 4517 4518 4519 4520 4521 4522 4523 4524 4525 4526 4527 4528 4529 4530 4531 4532 4533 4534 4535 4536 4537 4538 4539 4540 4541 4542 4543 4544 4545 4546 4547 4548 4549 4550 4551 4552 4553 4554 4555 4556 4557 4558 4559 4560 4561 4562 4563 4564
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;
}

4565 4566
static int ath10k_config(struct ieee80211_hw *hw, u32 changed)
{
4567 4568 4569 4570 4571 4572
	struct ath10k *ar = hw->priv;
	struct ieee80211_conf *conf = &hw->conf;
	int ret = 0;

	mutex_lock(&ar->conf_mutex);

4573 4574
	if (changed & IEEE80211_CONF_CHANGE_PS)
		ath10k_config_ps(ar);
4575 4576

	if (changed & IEEE80211_CONF_CHANGE_MONITOR) {
4577 4578 4579 4580
		ar->monitor = conf->flags & IEEE80211_CONF_MONITOR;
		ret = ath10k_monitor_recalc(ar);
		if (ret)
			ath10k_warn(ar, "failed to recalc monitor: %d\n", ret);
4581 4582 4583 4584 4585 4586
	}

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

4587 4588
static u32 get_nss_from_chainmask(u16 chain_mask)
{
4589
	if ((chain_mask & 0xf) == 0xf)
4590 4591 4592 4593 4594 4595 4596 4597
		return 4;
	else if ((chain_mask & 0x7) == 0x7)
		return 3;
	else if ((chain_mask & 0x3) == 0x3)
		return 2;
	return 1;
}

4598 4599 4600 4601
static int ath10k_mac_set_txbf_conf(struct ath10k_vif *arvif)
{
	u32 value = 0;
	struct ath10k *ar = arvif->ar;
4602
	int nsts;
4603
	int sound_dim;
4604 4605 4606 4607

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

4608
	nsts = ath10k_mac_get_vht_cap_bf_sts(ar);
4609 4610
	if (ar->vht_cap_info & (IEEE80211_VHT_CAP_SU_BEAMFORMEE_CAPABLE |
				IEEE80211_VHT_CAP_MU_BEAMFORMEE_CAPABLE))
4611
		value |= SM(nsts, WMI_TXBF_STS_CAP_OFFSET);
4612

4613
	sound_dim = ath10k_mac_get_vht_cap_bf_sound_dim(ar);
4614 4615
	if (ar->vht_cap_info & (IEEE80211_VHT_CAP_SU_BEAMFORMER_CAPABLE |
				IEEE80211_VHT_CAP_MU_BEAMFORMER_CAPABLE))
4616
		value |= SM(sound_dim, WMI_BF_SOUND_DIM_OFFSET);
4617 4618 4619 4620 4621 4622 4623 4624 4625 4626 4627 4628 4629 4630 4631 4632 4633 4634 4635 4636 4637 4638

	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);
}

4639 4640 4641 4642 4643 4644 4645 4646 4647 4648 4649 4650
/*
 * 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);
4651
	struct ath10k_peer *peer;
4652 4653
	enum wmi_sta_powersave_param param;
	int ret = 0;
4654
	u32 value;
4655
	int bit;
M
Michal Kazior 已提交
4656
	int i;
4657
	u32 vdev_param;
4658

4659 4660
	vif->driver_flags |= IEEE80211_VIF_SUPPORTS_UAPSD;

4661 4662
	mutex_lock(&ar->conf_mutex);

4663
	memset(arvif, 0, sizeof(*arvif));
M
Michal Kazior 已提交
4664
	ath10k_mac_txq_init(vif->txq);
4665

4666 4667 4668
	arvif->ar = ar;
	arvif->vif = vif;

4669
	INIT_LIST_HEAD(&arvif->list);
4670
	INIT_WORK(&arvif->ap_csa_work, ath10k_mac_vif_ap_csa_work);
4671 4672
	INIT_DELAYED_WORK(&arvif->connection_loss_work,
			  ath10k_mac_vif_sta_connection_loss_work);
4673

4674 4675 4676 4677 4678 4679 4680
	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));
	}
4681

4682 4683
	if (ar->num_peers >= ar->max_num_peers) {
		ath10k_warn(ar, "refusing vdev creation due to insufficient peer entry resources in firmware\n");
4684 4685
		ret = -ENOBUFS;
		goto err;
4686 4687
	}

B
Ben Greear 已提交
4688
	if (ar->free_vdev_map == 0) {
4689
		ath10k_warn(ar, "Free vdev map is empty, no more interfaces allowed.\n");
4690
		ret = -EBUSY;
4691
		goto err;
4692
	}
B
Ben Greear 已提交
4693
	bit = __ffs64(ar->free_vdev_map);
4694

B
Ben Greear 已提交
4695 4696
	ath10k_dbg(ar, ATH10K_DBG_MAC, "mac create vdev %i map %llx\n",
		   bit, ar->free_vdev_map);
4697

B
Ben Greear 已提交
4698
	arvif->vdev_id = bit;
4699 4700
	arvif->vdev_subtype =
		ath10k_wmi_get_vdev_subtype(ar, WMI_VDEV_SUBTYPE_NONE);
4701 4702

	switch (vif->type) {
M
Michal Kazior 已提交
4703 4704
	case NL80211_IFTYPE_P2P_DEVICE:
		arvif->vdev_type = WMI_VDEV_TYPE_STA;
4705 4706
		arvif->vdev_subtype = ath10k_wmi_get_vdev_subtype
					(ar, WMI_VDEV_SUBTYPE_P2P_DEVICE);
M
Michal Kazior 已提交
4707
		break;
4708 4709 4710 4711
	case NL80211_IFTYPE_UNSPECIFIED:
	case NL80211_IFTYPE_STATION:
		arvif->vdev_type = WMI_VDEV_TYPE_STA;
		if (vif->p2p)
4712 4713
			arvif->vdev_subtype = ath10k_wmi_get_vdev_subtype
					(ar, WMI_VDEV_SUBTYPE_P2P_CLIENT);
4714 4715 4716 4717
		break;
	case NL80211_IFTYPE_ADHOC:
		arvif->vdev_type = WMI_VDEV_TYPE_IBSS;
		break;
B
Bob Copeland 已提交
4718
	case NL80211_IFTYPE_MESH_POINT:
4719
		if (test_bit(WMI_SERVICE_MESH_11S, ar->wmi.svc_map)) {
4720 4721
			arvif->vdev_subtype = ath10k_wmi_get_vdev_subtype
						(ar, WMI_VDEV_SUBTYPE_MESH_11S);
4722
		} else if (!test_bit(ATH10K_FLAG_RAW_MODE, &ar->dev_flags)) {
B
Bob Copeland 已提交
4723 4724 4725 4726 4727 4728
			ret = -EINVAL;
			ath10k_warn(ar, "must load driver with rawmode=1 to add mesh interfaces\n");
			goto err;
		}
		arvif->vdev_type = WMI_VDEV_TYPE_AP;
		break;
4729 4730 4731 4732
	case NL80211_IFTYPE_AP:
		arvif->vdev_type = WMI_VDEV_TYPE_AP;

		if (vif->p2p)
4733 4734
			arvif->vdev_subtype = ath10k_wmi_get_vdev_subtype
						(ar, WMI_VDEV_SUBTYPE_P2P_GO);
4735 4736 4737 4738 4739 4740 4741 4742 4743
		break;
	case NL80211_IFTYPE_MONITOR:
		arvif->vdev_type = WMI_VDEV_TYPE_MONITOR;
		break;
	default:
		WARN_ON(1);
		break;
	}

M
Michal Kazior 已提交
4744 4745 4746 4747 4748 4749 4750 4751 4752
	/* 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);

4753 4754 4755 4756 4757 4758 4759 4760 4761 4762 4763 4764 4765 4766 4767 4768 4769
	/* Some firmware revisions don't wait for beacon tx completion before
	 * sending another SWBA event. This could lead to hardware using old
	 * (freed) beacon data in some cases, e.g. tx credit starvation
	 * combined with missed TBTT. This is very very rare.
	 *
	 * On non-IOMMU-enabled hosts this could be a possible security issue
	 * because hw could beacon some random data on the air.  On
	 * IOMMU-enabled hosts DMAR faults would occur in most cases and target
	 * device would crash.
	 *
	 * Since there are no beacon tx completions (implicit nor explicit)
	 * propagated to host the only workaround for this is to allocate a
	 * DMA-coherent buffer for a lifetime of a vif and use it for all
	 * beacon tx commands. Worst case for this approach is some beacons may
	 * become corrupted, e.g. have garbled IEs or out-of-date TIM bitmap.
	 */
	if (vif->type == NL80211_IFTYPE_ADHOC ||
B
Bob Copeland 已提交
4770
	    vif->type == NL80211_IFTYPE_MESH_POINT ||
4771 4772 4773 4774
	    vif->type == NL80211_IFTYPE_AP) {
		arvif->beacon_buf = dma_zalloc_coherent(ar->dev,
							IEEE80211_MAX_FRAME_LEN,
							&arvif->beacon_paddr,
4775
							GFP_ATOMIC);
4776 4777 4778 4779 4780 4781 4782
		if (!arvif->beacon_buf) {
			ret = -ENOMEM;
			ath10k_warn(ar, "failed to allocate beacon buffer: %d\n",
				    ret);
			goto err;
		}
	}
4783 4784 4785 4786 4787 4788 4789 4790
	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;
	}
4791 4792 4793 4794

	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");
4795 4796 4797 4798

	ret = ath10k_wmi_vdev_create(ar, arvif->vdev_id, arvif->vdev_type,
				     arvif->vdev_subtype, vif->addr);
	if (ret) {
4799
		ath10k_warn(ar, "failed to create WMI vdev %i: %d\n",
4800
			    arvif->vdev_id, ret);
4801
		goto err;
4802 4803
	}

B
Ben Greear 已提交
4804
	ar->free_vdev_map &= ~(1LL << arvif->vdev_id);
M
Michal Kazior 已提交
4805
	list_add(&arvif->list, &ar->arvifs);
4806

M
Michal Kazior 已提交
4807 4808 4809 4810
	/* 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);
4811
	if (ret) {
M
Michal Kazior 已提交
4812
		ath10k_warn(ar, "failed to disable keepalive on vdev %i: %d\n",
4813
			    arvif->vdev_id, ret);
4814 4815
		goto err_vdev_delete;
	}
4816

4817
	arvif->def_wep_key_idx = -1;
4818

4819 4820
	vdev_param = ar->wmi.vdev_param->tx_encap_type;
	ret = ath10k_wmi_vdev_set_param(ar, arvif->vdev_id, vdev_param,
4821
					ATH10K_HW_TXRX_NATIVE_WIFI);
4822
	/* 10.X firmware does not support this VDEV parameter. Do not warn */
4823
	if (ret && ret != -EOPNOTSUPP) {
4824
		ath10k_warn(ar, "failed to set vdev %i TX encapsulation: %d\n",
4825
			    arvif->vdev_id, ret);
4826 4827
		goto err_vdev_delete;
	}
4828

4829 4830 4831 4832
	/* Configuring number of spatial stream for monitor interface is causing
	 * target assert in qca9888 and qca6174.
	 */
	if (ar->cfg_tx_chainmask && (vif->type != NL80211_IFTYPE_MONITOR)) {
4833 4834 4835 4836 4837 4838 4839 4840 4841 4842 4843 4844 4845
		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;
		}
	}

4846 4847
	if (arvif->vdev_type == WMI_VDEV_TYPE_AP ||
	    arvif->vdev_type == WMI_VDEV_TYPE_IBSS) {
M
Michal Kazior 已提交
4848 4849
		ret = ath10k_peer_create(ar, vif, NULL, arvif->vdev_id,
					 vif->addr, WMI_PEER_TYPE_DEFAULT);
4850
		if (ret) {
4851
			ath10k_warn(ar, "failed to create vdev %i peer for AP/IBSS: %d\n",
4852
				    arvif->vdev_id, ret);
4853
			goto err_vdev_delete;
4854
		}
4855 4856 4857 4858 4859 4860 4861 4862 4863 4864 4865 4866 4867 4868 4869 4870 4871 4872

		spin_lock_bh(&ar->data_lock);

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

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

		spin_unlock_bh(&ar->data_lock);
	} else {
		arvif->peer_id = HTT_INVALID_PEERID;
4873
	}
4874

4875
	if (arvif->vdev_type == WMI_VDEV_TYPE_AP) {
4876 4877
		ret = ath10k_mac_set_kickout(arvif);
		if (ret) {
4878
			ath10k_warn(ar, "failed to set vdev %i kickout parameters: %d\n",
4879
				    arvif->vdev_id, ret);
4880 4881
			goto err_peer_delete;
		}
4882 4883 4884 4885 4886 4887 4888
	}

	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);
4889
		if (ret) {
4890
			ath10k_warn(ar, "failed to set vdev %i RX wake policy: %d\n",
4891
				    arvif->vdev_id, ret);
4892 4893
			goto err_peer_delete;
		}
4894

M
Michal Kazior 已提交
4895
		ret = ath10k_mac_vif_recalc_ps_wake_threshold(arvif);
4896
		if (ret) {
M
Michal Kazior 已提交
4897
			ath10k_warn(ar, "failed to recalc ps wake threshold on vdev %i: %d\n",
4898
				    arvif->vdev_id, ret);
4899 4900
			goto err_peer_delete;
		}
4901

M
Michal Kazior 已提交
4902
		ret = ath10k_mac_vif_recalc_ps_poll_count(arvif);
4903
		if (ret) {
M
Michal Kazior 已提交
4904
			ath10k_warn(ar, "failed to recalc ps poll count on vdev %i: %d\n",
4905
				    arvif->vdev_id, ret);
4906 4907
			goto err_peer_delete;
		}
4908 4909
	}

4910 4911 4912 4913 4914 4915 4916
	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;
	}

4917
	ret = ath10k_mac_set_rts(arvif, ar->hw->wiphy->rts_threshold);
4918
	if (ret) {
4919
		ath10k_warn(ar, "failed to set rts threshold for vdev %d: %d\n",
4920
			    arvif->vdev_id, ret);
4921 4922
		goto err_peer_delete;
	}
4923

4924 4925 4926 4927 4928 4929 4930
	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
4931 4932 4933 4934 4935 4936 4937 4938 4939
	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;
		}
	}

4940 4941 4942 4943 4944
	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);

4945
	mutex_unlock(&ar->conf_mutex);
4946 4947 4948
	return 0;

err_peer_delete:
4949 4950
	if (arvif->vdev_type == WMI_VDEV_TYPE_AP ||
	    arvif->vdev_type == WMI_VDEV_TYPE_IBSS)
4951 4952 4953 4954
		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
4955
	ar->free_vdev_map |= 1LL << arvif->vdev_id;
M
Michal Kazior 已提交
4956
	list_del(&arvif->list);
4957 4958

err:
4959 4960 4961 4962 4963 4964
	if (arvif->beacon_buf) {
		dma_free_coherent(ar->dev, IEEE80211_MAX_FRAME_LEN,
				  arvif->beacon_buf, arvif->beacon_paddr);
		arvif->beacon_buf = NULL;
	}

4965 4966
	mutex_unlock(&ar->conf_mutex);

4967 4968 4969
	return ret;
}

4970 4971 4972 4973 4974 4975 4976 4977
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);
}

4978 4979 4980 4981 4982
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);
M
Michal Kazior 已提交
4983
	struct ath10k_peer *peer;
4984
	int ret;
M
Michal Kazior 已提交
4985
	int i;
4986

4987
	cancel_work_sync(&arvif->ap_csa_work);
4988
	cancel_delayed_work_sync(&arvif->connection_loss_work);
4989

4990 4991
	mutex_lock(&ar->conf_mutex);

4992
	spin_lock_bh(&ar->data_lock);
4993
	ath10k_mac_vif_beacon_cleanup(arvif);
4994 4995
	spin_unlock_bh(&ar->data_lock);

4996 4997
	ret = ath10k_spectral_vif_stop(arvif);
	if (ret)
4998
		ath10k_warn(ar, "failed to stop spectral for vdev %i: %d\n",
4999 5000
			    arvif->vdev_id, ret);

B
Ben Greear 已提交
5001
	ar->free_vdev_map |= 1LL << arvif->vdev_id;
M
Michal Kazior 已提交
5002
	list_del(&arvif->list);
5003

5004 5005
	if (arvif->vdev_type == WMI_VDEV_TYPE_AP ||
	    arvif->vdev_type == WMI_VDEV_TYPE_IBSS) {
5006 5007
		ret = ath10k_wmi_peer_delete(arvif->ar, arvif->vdev_id,
					     vif->addr);
5008
		if (ret)
5009
			ath10k_warn(ar, "failed to submit AP/IBSS self-peer removal on vdev %i: %d\n",
5010
				    arvif->vdev_id, ret);
5011 5012 5013 5014

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

5015
	ath10k_dbg(ar, ATH10K_DBG_MAC, "mac vdev %i delete (remove interface)\n",
K
Kalle Valo 已提交
5016 5017
		   arvif->vdev_id);

5018 5019
	ret = ath10k_wmi_vdev_delete(ar, arvif->vdev_id);
	if (ret)
5020
		ath10k_warn(ar, "failed to delete WMI vdev %i: %d\n",
5021
			    arvif->vdev_id, ret);
5022

5023 5024 5025
	/* Some firmware revisions don't notify host about self-peer removal
	 * until after associated vdev is deleted.
	 */
5026 5027
	if (arvif->vdev_type == WMI_VDEV_TYPE_AP ||
	    arvif->vdev_type == WMI_VDEV_TYPE_IBSS) {
5028 5029 5030 5031 5032 5033 5034 5035 5036 5037 5038
		ret = ath10k_wait_for_peer_deleted(ar, arvif->vdev_id,
						   vif->addr);
		if (ret)
			ath10k_warn(ar, "failed to remove AP self-peer on vdev %i: %d\n",
				    arvif->vdev_id, ret);

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

M
Michal Kazior 已提交
5039 5040 5041 5042 5043 5044 5045 5046 5047 5048 5049 5050 5051 5052
	spin_lock_bh(&ar->data_lock);
	for (i = 0; i < ARRAY_SIZE(ar->peer_map); i++) {
		peer = ar->peer_map[i];
		if (!peer)
			continue;

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

5053
	ath10k_peer_cleanup(ar, arvif->vdev_id);
M
Michal Kazior 已提交
5054
	ath10k_mac_txq_unref(ar, vif->txq);
5055

M
Michal Kazior 已提交
5056 5057 5058 5059 5060 5061 5062
	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);
	}

5063 5064 5065 5066
	spin_lock_bh(&ar->htt.tx_lock);
	ath10k_mac_vif_tx_unlock_all(arvif);
	spin_unlock_bh(&ar->htt.tx_lock);

M
Michal Kazior 已提交
5067 5068
	ath10k_mac_txq_unref(ar, vif->txq);

5069 5070 5071 5072 5073 5074 5075
	mutex_unlock(&ar->conf_mutex);
}

/*
 * FIXME: Has to be verified.
 */
#define SUPPORTED_FILTERS			\
5076
	(FIF_ALLMULTI |				\
5077 5078 5079 5080 5081 5082 5083 5084 5085 5086 5087 5088 5089 5090 5091 5092 5093 5094 5095 5096 5097
	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;

5098 5099 5100
	ret = ath10k_monitor_recalc(ar);
	if (ret)
		ath10k_warn(ar, "failed to recalc montior: %d\n", ret);
5101 5102 5103 5104 5105 5106 5107 5108 5109 5110 5111 5112

	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;
5113
	u32 vdev_param, pdev_param, slottime, preamble;
5114 5115 5116 5117 5118 5119 5120 5121

	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;
5122 5123
		vdev_param = ar->wmi.vdev_param->beacon_interval;
		ret = ath10k_wmi_vdev_set_param(ar, arvif->vdev_id, vdev_param,
5124
						arvif->beacon_interval);
5125
		ath10k_dbg(ar, ATH10K_DBG_MAC,
K
Kalle Valo 已提交
5126 5127 5128
			   "mac vdev %d beacon_interval %d\n",
			   arvif->vdev_id, arvif->beacon_interval);

5129
		if (ret)
5130
			ath10k_warn(ar, "failed to set beacon interval for vdev %d: %i\n",
5131
				    arvif->vdev_id, ret);
5132 5133 5134
	}

	if (changed & BSS_CHANGED_BEACON) {
5135
		ath10k_dbg(ar, ATH10K_DBG_MAC,
K
Kalle Valo 已提交
5136 5137 5138
			   "vdev %d set beacon tx mode to staggered\n",
			   arvif->vdev_id);

5139 5140
		pdev_param = ar->wmi.pdev_param->beacon_tx_mode;
		ret = ath10k_wmi_pdev_set_param(ar, pdev_param,
5141 5142
						WMI_BEACON_STAGGERED_MODE);
		if (ret)
5143
			ath10k_warn(ar, "failed to set beacon mode for vdev %d: %i\n",
5144
				    arvif->vdev_id, ret);
5145 5146 5147 5148 5149

		ret = ath10k_mac_setup_bcn_tmpl(arvif);
		if (ret)
			ath10k_warn(ar, "failed to update beacon template: %d\n",
				    ret);
B
Bob Copeland 已提交
5150 5151 5152 5153 5154 5155 5156

		if (ieee80211_vif_is_mesh(vif)) {
			/* mesh doesn't use SSID but firmware needs it */
			strncpy(arvif->u.ap.ssid, "mesh",
				sizeof(arvif->u.ap.ssid));
			arvif->u.ap.ssid_len = 4;
		}
5157 5158 5159 5160 5161 5162 5163
	}

	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);
5164 5165
	}

5166
	if (changed & (BSS_CHANGED_BEACON_INFO | BSS_CHANGED_BEACON)) {
5167 5168
		arvif->dtim_period = info->dtim_period;

5169
		ath10k_dbg(ar, ATH10K_DBG_MAC,
K
Kalle Valo 已提交
5170 5171 5172
			   "mac vdev %d dtim_period %d\n",
			   arvif->vdev_id, arvif->dtim_period);

5173 5174
		vdev_param = ar->wmi.vdev_param->dtim_period;
		ret = ath10k_wmi_vdev_set_param(ar, arvif->vdev_id, vdev_param,
5175 5176
						arvif->dtim_period);
		if (ret)
5177
			ath10k_warn(ar, "failed to set dtim period for vdev %d: %i\n",
5178
				    arvif->vdev_id, ret);
5179 5180 5181 5182 5183 5184 5185 5186 5187 5188
	}

	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;
	}

5189 5190
	if (changed & BSS_CHANGED_BSSID && !is_zero_ether_addr(info->bssid))
		ether_addr_copy(arvif->bssid, info->bssid);
5191 5192 5193 5194 5195

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

	if (changed & BSS_CHANGED_ERP_CTS_PROT) {
5196
		arvif->use_cts_prot = info->use_cts_prot;
5197
		ath10k_dbg(ar, ATH10K_DBG_MAC, "mac vdev %d cts_prot %d\n",
5198
			   arvif->vdev_id, info->use_cts_prot);
K
Kalle Valo 已提交
5199

5200
		ret = ath10k_recalc_rtscts_prot(arvif);
5201
		if (ret)
5202
			ath10k_warn(ar, "failed to recalculate rts/cts prot for vdev %d: %d\n",
5203
				    arvif->vdev_id, ret);
M
Michal Kazior 已提交
5204 5205 5206 5207 5208 5209

		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",
K
Kalle Valo 已提交
5210
				    info->use_cts_prot, arvif->vdev_id, ret);
5211 5212 5213 5214 5215 5216 5217 5218 5219
	}

	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 */

5220
		ath10k_dbg(ar, ATH10K_DBG_MAC, "mac vdev %d slot_time %d\n",
K
Kalle Valo 已提交
5221 5222
			   arvif->vdev_id, slottime);

5223 5224
		vdev_param = ar->wmi.vdev_param->slot_time;
		ret = ath10k_wmi_vdev_set_param(ar, arvif->vdev_id, vdev_param,
5225 5226
						slottime);
		if (ret)
5227
			ath10k_warn(ar, "failed to set erp slot for vdev %d: %i\n",
5228
				    arvif->vdev_id, ret);
5229 5230 5231 5232 5233 5234 5235 5236
	}

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

5237
		ath10k_dbg(ar, ATH10K_DBG_MAC,
K
Kalle Valo 已提交
5238 5239 5240
			   "mac vdev %d preamble %dn",
			   arvif->vdev_id, preamble);

5241 5242
		vdev_param = ar->wmi.vdev_param->preamble;
		ret = ath10k_wmi_vdev_set_param(ar, arvif->vdev_id, vdev_param,
5243 5244
						preamble);
		if (ret)
5245
			ath10k_warn(ar, "failed to set preamble for vdev %d: %i\n",
5246
				    arvif->vdev_id, ret);
5247 5248 5249
	}

	if (changed & BSS_CHANGED_ASSOC) {
5250 5251 5252 5253 5254 5255 5256
		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);
5257
			ath10k_bss_assoc(hw, vif, info);
5258
			ath10k_monitor_recalc(ar);
5259 5260
		} else {
			ath10k_bss_disassoc(hw, vif);
5261
		}
5262 5263
	}

5264 5265 5266 5267 5268 5269 5270 5271 5272 5273
	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);
	}

5274
	if (changed & BSS_CHANGED_PS) {
5275 5276 5277
		arvif->ps = vif->bss_conf.ps;

		ret = ath10k_config_ps(ar);
5278 5279 5280 5281 5282
		if (ret)
			ath10k_warn(ar, "failed to setup ps on vdev %i: %d\n",
				    arvif->vdev_id, ret);
	}

5283 5284 5285 5286 5287
	mutex_unlock(&ar->conf_mutex);
}

static int ath10k_hw_scan(struct ieee80211_hw *hw,
			  struct ieee80211_vif *vif,
5288
			  struct ieee80211_scan_request *hw_req)
5289 5290 5291
{
	struct ath10k *ar = hw->priv;
	struct ath10k_vif *arvif = ath10k_vif_to_arvif(vif);
5292
	struct cfg80211_scan_request *req = &hw_req->req;
5293 5294 5295 5296 5297 5298 5299
	struct wmi_start_scan_arg arg;
	int ret = 0;
	int i;

	mutex_lock(&ar->conf_mutex);

	spin_lock_bh(&ar->data_lock);
5300 5301 5302 5303 5304 5305 5306 5307 5308 5309 5310 5311
	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:
5312
		ret = -EBUSY;
5313
		break;
5314 5315 5316
	}
	spin_unlock_bh(&ar->data_lock);

5317 5318 5319
	if (ret)
		goto exit;

5320 5321 5322 5323 5324 5325 5326 5327 5328 5329 5330 5331 5332 5333 5334 5335
	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;
		}
5336 5337
	} else {
		arg.scan_ctrl_flags |= WMI_SCAN_FLAG_PASSIVE;
5338 5339 5340 5341 5342 5343 5344 5345 5346 5347
	}

	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) {
5348
		ath10k_warn(ar, "failed to start hw scan: %d\n", ret);
5349
		spin_lock_bh(&ar->data_lock);
5350
		ar->scan.state = ATH10K_SCAN_IDLE;
5351 5352 5353
		spin_unlock_bh(&ar->data_lock);
	}

5354 5355 5356 5357 5358
	/* 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));

5359 5360 5361 5362 5363 5364 5365 5366 5367 5368 5369
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);
5370
	ath10k_scan_abort(ar);
5371
	mutex_unlock(&ar->conf_mutex);
5372 5373

	cancel_delayed_work_sync(&ar->scan.timeout);
5374 5375
}

5376 5377 5378 5379 5380 5381 5382 5383 5384 5385 5386 5387 5388
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
5389 5390 5391 5392 5393
	 * 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.
	 */
5394

M
Michal Kazior 已提交
5395 5396
	if (arvif->vdev_type != WMI_VDEV_TYPE_AP &&
	    arvif->vdev_type != WMI_VDEV_TYPE_IBSS)
5397 5398 5399 5400 5401 5402 5403 5404 5405 5406 5407 5408 5409 5410 5411 5412 5413
		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)
5414
		ath10k_warn(ar, "failed to set vdev %i group key as default key: %d\n",
5415
			    arvif->vdev_id, ret);
5416 5417
}

5418 5419 5420 5421 5422 5423 5424 5425 5426 5427 5428
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;
5429
	int ret2;
5430
	u32 flags = 0;
5431
	u32 flags2;
5432

5433 5434 5435
	/* this one needs to be done in software */
	if (key->cipher == WLAN_CIPHER_SUITE_AES_CMAC)
		return 1;
5436

5437 5438 5439
	if (arvif->nohwcrypt)
		return 1;

5440 5441 5442 5443 5444 5445 5446 5447 5448 5449 5450 5451 5452 5453
	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;

5454 5455 5456 5457 5458 5459 5460
	if (is_wep) {
		if (cmd == SET_KEY)
			arvif->wep_keys[key->keyidx] = key;
		else
			arvif->wep_keys[key->keyidx] = NULL;
	}

5461 5462 5463 5464 5465 5466 5467 5468
	/* 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) {
5469
			ath10k_warn(ar, "failed to install key for non-existent peer %pM\n",
5470 5471 5472 5473 5474 5475 5476 5477 5478 5479
				    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
5480 5481 5482 5483
	if (key->flags & IEEE80211_KEY_FLAG_PAIRWISE)
		flags |= WMI_KEY_PAIRWISE;
	else
		flags |= WMI_KEY_GROUP;
5484 5485 5486 5487 5488

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

5489 5490 5491 5492 5493 5494 5495 5496
		/* 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);

5497 5498 5499 5500 5501 5502 5503 5504 5505
		/* 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;
	}
5506

5507
	ret = ath10k_install_key(arvif, key, cmd, peer_addr, flags);
5508
	if (ret) {
5509
		WARN_ON(ret > 0);
5510
		ath10k_warn(ar, "failed to install key for vdev %i peer %pM: %d\n",
5511
			    arvif->vdev_id, peer_addr, ret);
5512 5513 5514
		goto exit;
	}

5515 5516 5517 5518 5519 5520 5521 5522 5523 5524
	/* 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) {
5525
			WARN_ON(ret > 0);
5526 5527 5528 5529
			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);
5530 5531
			if (ret2) {
				WARN_ON(ret2 > 0);
5532 5533
				ath10k_warn(ar, "failed to disable (mcast) key for vdev %i peer %pM: %d\n",
					    arvif->vdev_id, peer_addr, ret2);
5534
			}
5535 5536 5537 5538
			goto exit;
		}
	}

5539 5540
	ath10k_set_key_h_def_keyidx(ar, arvif, cmd, key);

5541 5542 5543 5544 5545 5546 5547 5548
	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 */
5549
		ath10k_warn(ar, "Peer %pM disappeared!\n", peer_addr);
5550 5551 5552 5553 5554 5555 5556
	spin_unlock_bh(&ar->data_lock);

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

5557 5558 5559 5560 5561 5562 5563 5564 5565 5566 5567 5568 5569 5570 5571 5572 5573 5574 5575 5576 5577 5578 5579 5580 5581 5582 5583 5584 5585
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;
5586

5587 5588 5589 5590
unlock:
	mutex_unlock(&arvif->ar->conf_mutex);
}

5591 5592 5593 5594 5595 5596
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;
5597 5598 5599 5600
	struct cfg80211_chan_def def;
	enum ieee80211_band band;
	const u8 *ht_mcs_mask;
	const u16 *vht_mcs_mask;
5601 5602 5603 5604 5605 5606 5607 5608
	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;

5609 5610 5611 5612 5613 5614 5615
	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;

5616 5617 5618 5619 5620 5621 5622 5623 5624 5625 5626 5627 5628
	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);

5629 5630 5631 5632
	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)));

5633
	if (changed & IEEE80211_RC_BW_CHANGED) {
5634
		ath10k_dbg(ar, ATH10K_DBG_MAC, "mac update sta %pM peer bw %d\n",
5635 5636 5637 5638 5639
			   sta->addr, bw);

		err = ath10k_wmi_peer_set_param(ar, arvif->vdev_id, sta->addr,
						WMI_PEER_CHAN_WIDTH, bw);
		if (err)
5640
			ath10k_warn(ar, "failed to update STA %pM peer bw %d: %d\n",
5641 5642 5643 5644
				    sta->addr, bw, err);
	}

	if (changed & IEEE80211_RC_NSS_CHANGED) {
5645
		ath10k_dbg(ar, ATH10K_DBG_MAC, "mac update sta %pM nss %d\n",
5646 5647 5648 5649 5650
			   sta->addr, nss);

		err = ath10k_wmi_peer_set_param(ar, arvif->vdev_id, sta->addr,
						WMI_PEER_NSS, nss);
		if (err)
5651
			ath10k_warn(ar, "failed to update STA %pM nss %d: %d\n",
5652 5653 5654 5655
				    sta->addr, nss, err);
	}

	if (changed & IEEE80211_RC_SMPS_CHANGED) {
5656
		ath10k_dbg(ar, ATH10K_DBG_MAC, "mac update sta %pM smps %d\n",
5657 5658 5659 5660 5661
			   sta->addr, smps);

		err = ath10k_wmi_peer_set_param(ar, arvif->vdev_id, sta->addr,
						WMI_PEER_SMPS_STATE, smps);
		if (err)
5662
			ath10k_warn(ar, "failed to update STA %pM smps %d: %d\n",
5663 5664 5665
				    sta->addr, smps, err);
	}

5666 5667 5668
	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",
5669 5670
			   sta->addr);

M
Michal Kazior 已提交
5671
		err = ath10k_station_assoc(ar, arvif->vif, sta, true);
5672
		if (err)
5673
			ath10k_warn(ar, "failed to reassociate station: %pM\n",
5674 5675 5676
				    sta->addr);
	}

5677 5678 5679
	mutex_unlock(&ar->conf_mutex);
}

M
Marek Puzyniak 已提交
5680 5681
static int ath10k_mac_inc_num_stations(struct ath10k_vif *arvif,
				       struct ieee80211_sta *sta)
5682 5683 5684 5685 5686
{
	struct ath10k *ar = arvif->ar;

	lockdep_assert_held(&ar->conf_mutex);

M
Marek Puzyniak 已提交
5687
	if (arvif->vdev_type == WMI_VDEV_TYPE_STA && !sta->tdls)
5688 5689 5690 5691 5692 5693 5694 5695 5696 5697
		return 0;

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

	ar->num_stations++;

	return 0;
}

M
Marek Puzyniak 已提交
5698 5699
static void ath10k_mac_dec_num_stations(struct ath10k_vif *arvif,
					struct ieee80211_sta *sta)
5700 5701 5702 5703 5704
{
	struct ath10k *ar = arvif->ar;

	lockdep_assert_held(&ar->conf_mutex);

M
Marek Puzyniak 已提交
5705
	if (arvif->vdev_type == WMI_VDEV_TYPE_STA && !sta->tdls)
5706 5707 5708 5709 5710
		return;

	ar->num_stations--;
}

5711 5712 5713 5714 5715 5716 5717
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)
5718
{
5719
	struct ath10k_mac_tdls_iter_data *iter_data = data;
5720
	struct ath10k_sta *arsta = (struct ath10k_sta *)sta->drv_priv;
5721
	struct ieee80211_vif *sta_vif = arsta->arvif->vif;
5722

5723 5724 5725 5726 5727 5728 5729 5730 5731 5732 5733 5734 5735 5736 5737 5738 5739 5740 5741 5742 5743 5744 5745 5746 5747 5748 5749 5750 5751 5752 5753 5754 5755 5756 5757 5758 5759 5760 5761 5762 5763
	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;
}

5764 5765 5766 5767 5768 5769 5770 5771
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);
5772
	struct ath10k_sta *arsta = (struct ath10k_sta *)sta->drv_priv;
5773
	struct ath10k_peer *peer;
5774
	int ret = 0;
M
Michal Kazior 已提交
5775
	int i;
5776

5777 5778 5779 5780 5781
	if (old_state == IEEE80211_STA_NOTEXIST &&
	    new_state == IEEE80211_STA_NONE) {
		memset(arsta, 0, sizeof(*arsta));
		arsta->arvif = arvif;
		INIT_WORK(&arsta->update_wk, ath10k_sta_rc_update_wk);
M
Michal Kazior 已提交
5782 5783 5784

		for (i = 0; i < ARRAY_SIZE(sta->txq); i++)
			ath10k_mac_txq_init(sta->txq[i]);
5785 5786
	}

5787 5788 5789 5790 5791
	/* 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);

5792 5793 5794
	mutex_lock(&ar->conf_mutex);

	if (old_state == IEEE80211_STA_NOTEXIST &&
5795
	    new_state == IEEE80211_STA_NONE) {
5796 5797 5798
		/*
		 * New station addition.
		 */
5799 5800 5801 5802
		enum wmi_peer_type peer_type = WMI_PEER_TYPE_DEFAULT;
		u32 num_tdls_stations;
		u32 num_tdls_vifs;

5803 5804 5805 5806 5807
		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);
5808

M
Marek Puzyniak 已提交
5809
		ret = ath10k_mac_inc_num_stations(arvif, sta);
5810 5811 5812
		if (ret) {
			ath10k_warn(ar, "refusing to associate station: too many connected already (%d)\n",
				    ar->max_num_stations);
5813 5814 5815
			goto exit;
		}

5816 5817 5818
		if (sta->tdls)
			peer_type = WMI_PEER_TYPE_TDLS;

M
Michal Kazior 已提交
5819 5820
		ret = ath10k_peer_create(ar, vif, sta, arvif->vdev_id,
					 sta->addr, peer_type);
M
Michal Kazior 已提交
5821
		if (ret) {
5822
			ath10k_warn(ar, "failed to add peer %pM for vdev %d when adding a new sta: %i\n",
5823
				    sta->addr, arvif->vdev_id, ret);
M
Marek Puzyniak 已提交
5824
			ath10k_mac_dec_num_stations(arvif, sta);
M
Michal Kazior 已提交
5825 5826
			goto exit;
		}
5827

5828 5829 5830 5831 5832 5833 5834 5835 5836 5837 5838 5839 5840 5841 5842 5843 5844 5845
		spin_lock_bh(&ar->data_lock);

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

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

		spin_unlock_bh(&ar->data_lock);

5846 5847 5848 5849 5850 5851 5852 5853 5854 5855 5856 5857 5858
		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
5859 5860
			goto exit;
		}
5861

5862 5863 5864
		if (num_tdls_stations == 0) {
			/* This is the first tdls peer in current vif */
			enum wmi_tdls_state state = WMI_TDLS_ENABLE_ACTIVE;
5865

5866 5867
			ret = ath10k_wmi_update_fw_tdls_state(ar, arvif->vdev_id,
							      state);
5868
			if (ret) {
5869
				ath10k_warn(ar, "failed to update fw tdls state on vdev %i: %i\n",
5870
					    arvif->vdev_id, ret);
5871 5872 5873
				ath10k_peer_delete(ar, arvif->vdev_id,
						   sta->addr);
				ath10k_mac_dec_num_stations(arvif, sta);
5874 5875
				goto exit;
			}
5876 5877 5878 5879 5880 5881 5882 5883 5884 5885
		}

		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);
5886

5887 5888 5889 5890
			if (num_tdls_stations != 0)
				goto exit;
			ath10k_wmi_update_fw_tdls_state(ar, arvif->vdev_id,
							WMI_TDLS_DISABLE);
5891
		}
5892 5893 5894 5895 5896
	} else if ((old_state == IEEE80211_STA_NONE &&
		    new_state == IEEE80211_STA_NOTEXIST)) {
		/*
		 * Existing station deletion.
		 */
5897
		ath10k_dbg(ar, ATH10K_DBG_MAC,
K
Kalle Valo 已提交
5898 5899
			   "mac vdev %d peer delete %pM (sta gone)\n",
			   arvif->vdev_id, sta->addr);
5900

5901 5902
		ret = ath10k_peer_delete(ar, arvif->vdev_id, sta->addr);
		if (ret)
5903
			ath10k_warn(ar, "failed to delete peer %pM for vdev %d: %i\n",
5904
				    sta->addr, arvif->vdev_id, ret);
5905

M
Marek Puzyniak 已提交
5906
		ath10k_mac_dec_num_stations(arvif, sta);
5907

M
Michal Kazior 已提交
5908 5909 5910 5911 5912 5913 5914 5915 5916 5917 5918 5919 5920 5921
		spin_lock_bh(&ar->data_lock);
		for (i = 0; i < ARRAY_SIZE(ar->peer_map); i++) {
			peer = ar->peer_map[i];
			if (!peer)
				continue;

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

M
Michal Kazior 已提交
5922 5923 5924
		for (i = 0; i < ARRAY_SIZE(sta->txq); i++)
			ath10k_mac_txq_unref(ar, sta->txq[i]);

5925 5926 5927 5928 5929 5930 5931 5932 5933 5934 5935 5936 5937
		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);
		}
5938 5939 5940
	} else if (old_state == IEEE80211_STA_AUTH &&
		   new_state == IEEE80211_STA_ASSOC &&
		   (vif->type == NL80211_IFTYPE_AP ||
B
Bob Copeland 已提交
5941
		    vif->type == NL80211_IFTYPE_MESH_POINT ||
5942 5943 5944 5945
		    vif->type == NL80211_IFTYPE_ADHOC)) {
		/*
		 * New association.
		 */
5946
		ath10k_dbg(ar, ATH10K_DBG_MAC, "mac sta %pM associated\n",
K
Kalle Valo 已提交
5947 5948
			   sta->addr);

M
Michal Kazior 已提交
5949
		ret = ath10k_station_assoc(ar, vif, sta, false);
5950
		if (ret)
5951
			ath10k_warn(ar, "failed to associate station %pM for vdev %i: %i\n",
5952
				    sta->addr, arvif->vdev_id, ret);
5953
	} else if (old_state == IEEE80211_STA_ASSOC &&
5954 5955 5956 5957 5958 5959 5960 5961 5962 5963 5964 5965 5966 5967 5968 5969 5970 5971 5972 5973 5974 5975 5976
		   new_state == IEEE80211_STA_AUTHORIZED &&
		   sta->tdls) {
		/*
		 * Tdls station authorized.
		 */
		ath10k_dbg(ar, ATH10K_DBG_MAC, "mac tdls sta %pM authorized\n",
			   sta->addr);

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

		ret = ath10k_mac_tdls_peer_update(ar, arvif->vdev_id, sta,
						  WMI_TDLS_PEER_STATE_CONNECTED);
		if (ret)
			ath10k_warn(ar, "failed to update tdls peer %pM for vdev %i: %i\n",
				    sta->addr, arvif->vdev_id, ret);
	} else if (old_state == IEEE80211_STA_ASSOC &&
		    new_state == IEEE80211_STA_AUTH &&
		    (vif->type == NL80211_IFTYPE_AP ||
B
Bob Copeland 已提交
5977
		     vif->type == NL80211_IFTYPE_MESH_POINT ||
5978
		     vif->type == NL80211_IFTYPE_ADHOC)) {
5979 5980 5981
		/*
		 * Disassociation.
		 */
5982
		ath10k_dbg(ar, ATH10K_DBG_MAC, "mac sta %pM disassociated\n",
K
Kalle Valo 已提交
5983 5984
			   sta->addr);

M
Michal Kazior 已提交
5985
		ret = ath10k_station_disassoc(ar, vif, sta);
5986
		if (ret)
5987
			ath10k_warn(ar, "failed to disassociate station: %pM vdev %i: %i\n",
5988
				    sta->addr, arvif->vdev_id, ret);
5989
	}
5990
exit:
5991 5992 5993 5994 5995
	mutex_unlock(&ar->conf_mutex);
	return ret;
}

static int ath10k_conf_tx_uapsd(struct ath10k *ar, struct ieee80211_vif *vif,
5996
				u16 ac, bool enable)
5997 5998
{
	struct ath10k_vif *arvif = ath10k_vif_to_arvif(vif);
5999 6000
	struct wmi_sta_uapsd_auto_trig_arg arg = {};
	u32 prio = 0, acc = 0;
6001 6002 6003
	u32 value = 0;
	int ret = 0;

M
Michal Kazior 已提交
6004 6005
	lockdep_assert_held(&ar->conf_mutex);

6006 6007 6008 6009 6010 6011 6012
	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;
6013 6014
		prio = 7;
		acc = 3;
6015 6016 6017 6018
		break;
	case IEEE80211_AC_VI:
		value = WMI_STA_PS_UAPSD_AC2_DELIVERY_EN |
			WMI_STA_PS_UAPSD_AC2_TRIGGER_EN;
6019 6020
		prio = 5;
		acc = 2;
6021 6022 6023 6024
		break;
	case IEEE80211_AC_BE:
		value = WMI_STA_PS_UAPSD_AC1_DELIVERY_EN |
			WMI_STA_PS_UAPSD_AC1_TRIGGER_EN;
6025 6026
		prio = 2;
		acc = 1;
6027 6028 6029 6030
		break;
	case IEEE80211_AC_BK:
		value = WMI_STA_PS_UAPSD_AC0_DELIVERY_EN |
			WMI_STA_PS_UAPSD_AC0_TRIGGER_EN;
6031 6032
		prio = 0;
		acc = 0;
6033 6034 6035 6036 6037 6038 6039 6040 6041 6042 6043 6044
		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) {
6045
		ath10k_warn(ar, "failed to set uapsd params: %d\n", ret);
6046 6047 6048 6049 6050 6051 6052 6053 6054 6055 6056 6057
		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)
6058
		ath10k_warn(ar, "failed to set rx wake param: %d\n", ret);
6059

M
Michal Kazior 已提交
6060 6061 6062 6063 6064 6065 6066 6067 6068 6069 6070 6071 6072 6073
	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;
	}

6074 6075 6076 6077 6078 6079 6080 6081 6082 6083 6084 6085 6086 6087 6088 6089 6090 6091 6092 6093 6094 6095 6096
	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;
		}
	}

6097 6098 6099 6100 6101 6102 6103 6104 6105
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;
6106
	struct ath10k_vif *arvif = ath10k_vif_to_arvif(vif);
6107 6108 6109 6110 6111 6112 6113
	struct wmi_wmm_params_arg *p = NULL;
	int ret;

	mutex_lock(&ar->conf_mutex);

	switch (ac) {
	case IEEE80211_AC_VO:
6114
		p = &arvif->wmm_params.ac_vo;
6115 6116
		break;
	case IEEE80211_AC_VI:
6117
		p = &arvif->wmm_params.ac_vi;
6118 6119
		break;
	case IEEE80211_AC_BE:
6120
		p = &arvif->wmm_params.ac_be;
6121 6122
		break;
	case IEEE80211_AC_BK:
6123
		p = &arvif->wmm_params.ac_bk;
6124 6125 6126 6127 6128 6129 6130 6131 6132 6133 6134 6135 6136 6137 6138 6139 6140 6141 6142
		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;

6143 6144 6145 6146 6147 6148 6149 6150 6151 6152 6153 6154 6155 6156 6157 6158 6159
	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;
		}
6160 6161 6162 6163
	}

	ret = ath10k_conf_tx_uapsd(ar, vif, ac, params->uapsd);
	if (ret)
6164
		ath10k_warn(ar, "failed to set sta uapsd: %d\n", ret);
6165 6166 6167 6168 6169 6170 6171 6172 6173 6174 6175 6176 6177 6178 6179 6180 6181

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;
6182
	int ret = 0;
M
Michal Kazior 已提交
6183
	u32 scan_time_msec;
6184 6185 6186 6187

	mutex_lock(&ar->conf_mutex);

	spin_lock_bh(&ar->data_lock);
6188 6189 6190 6191 6192 6193 6194 6195 6196
	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;
6197
		ar->scan.roc_notify = true;
6198 6199 6200 6201 6202
		ret = 0;
		break;
	case ATH10K_SCAN_STARTING:
	case ATH10K_SCAN_RUNNING:
	case ATH10K_SCAN_ABORTING:
6203
		ret = -EBUSY;
6204
		break;
6205 6206 6207
	}
	spin_unlock_bh(&ar->data_lock);

6208 6209 6210
	if (ret)
		goto exit;

M
Michal Kazior 已提交
6211
	scan_time_msec = ar->hw->wiphy->max_remain_on_channel_duration * 2;
M
Michal Kazior 已提交
6212

6213 6214 6215 6216 6217 6218
	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
6219 6220 6221
	arg.dwell_time_active = scan_time_msec;
	arg.dwell_time_passive = scan_time_msec;
	arg.max_scan_time = scan_time_msec;
6222 6223
	arg.scan_ctrl_flags |= WMI_SCAN_FLAG_PASSIVE;
	arg.scan_ctrl_flags |= WMI_SCAN_FILTER_PROBE_REQ;
6224
	arg.burst_duration_ms = duration;
6225 6226 6227

	ret = ath10k_start_scan(ar, &arg);
	if (ret) {
6228
		ath10k_warn(ar, "failed to start roc scan: %d\n", ret);
6229
		spin_lock_bh(&ar->data_lock);
6230
		ar->scan.state = ATH10K_SCAN_IDLE;
6231 6232 6233 6234 6235 6236
		spin_unlock_bh(&ar->data_lock);
		goto exit;
	}

	ret = wait_for_completion_timeout(&ar->scan.on_channel, 3*HZ);
	if (ret == 0) {
6237
		ath10k_warn(ar, "failed to switch to channel for roc scan\n");
6238 6239 6240

		ret = ath10k_scan_stop(ar);
		if (ret)
6241
			ath10k_warn(ar, "failed to stop scan: %d\n", ret);
6242

6243 6244 6245 6246
		ret = -ETIMEDOUT;
		goto exit;
	}

M
Michal Kazior 已提交
6247 6248 6249
	ieee80211_queue_delayed_work(ar->hw, &ar->scan.timeout,
				     msecs_to_jiffies(duration));

6250 6251 6252 6253 6254 6255 6256 6257 6258 6259 6260
	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);
6261 6262 6263 6264 6265

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

6266
	ath10k_scan_abort(ar);
6267

6268 6269
	mutex_unlock(&ar->conf_mutex);

6270 6271
	cancel_delayed_work_sync(&ar->scan.timeout);

6272 6273 6274 6275 6276 6277 6278 6279
	return 0;
}

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

6280 6281 6282 6283 6284
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
6285

6286
	mutex_lock(&ar->conf_mutex);
6287
	list_for_each_entry(arvif, &ar->arvifs, list) {
6288
		ath10k_dbg(ar, ATH10K_DBG_MAC, "mac vdev %d rts threshold %d\n",
6289 6290 6291 6292
			   arvif->vdev_id, value);

		ret = ath10k_mac_set_rts(arvif, value);
		if (ret) {
6293
			ath10k_warn(ar, "failed to set rts threshold for vdev %d: %d\n",
6294 6295 6296 6297
				    arvif->vdev_id, ret);
			break;
		}
	}
6298 6299
	mutex_unlock(&ar->conf_mutex);

6300
	return ret;
6301 6302
}

6303 6304 6305 6306 6307 6308 6309 6310 6311 6312 6313 6314 6315 6316 6317
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;
}

6318 6319
static void ath10k_flush(struct ieee80211_hw *hw, struct ieee80211_vif *vif,
			 u32 queues, bool drop)
6320 6321
{
	struct ath10k *ar = hw->priv;
6322
	bool skip;
6323
	long time_left;
6324 6325 6326 6327 6328 6329

	/* 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
6330 6331
	mutex_lock(&ar->conf_mutex);

6332 6333 6334
	if (ar->state == ATH10K_STATE_WEDGED)
		goto skip;

6335
	time_left = wait_event_timeout(ar->htt.empty_tx_wq, ({
6336
			bool empty;
6337

6338
			spin_lock_bh(&ar->htt.tx_lock);
6339
			empty = (ar->htt.num_pending_tx == 0);
6340
			spin_unlock_bh(&ar->htt.tx_lock);
6341

M
Michal Kazior 已提交
6342 6343 6344
			skip = (ar->state == ATH10K_STATE_WEDGED) ||
			       test_bit(ATH10K_FLAG_CRASH_FLUSH,
					&ar->dev_flags);
6345 6346

			(empty || skip);
6347
		}), ATH10K_FLUSH_TIMEOUT_HZ);
6348

6349 6350 6351
	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
6352

6353
skip:
M
Michal Kazior 已提交
6354
	mutex_unlock(&ar->conf_mutex);
6355 6356 6357 6358 6359 6360 6361 6362 6363 6364 6365
}

/* 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;
}

6366 6367
static void ath10k_reconfig_complete(struct ieee80211_hw *hw,
				     enum ieee80211_reconfig_type reconfig_type)
6368 6369 6370
{
	struct ath10k *ar = hw->priv;

6371 6372 6373
	if (reconfig_type != IEEE80211_RECONFIG_TYPE_RESTART)
		return;

6374 6375 6376 6377 6378
	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) {
6379
		ath10k_info(ar, "device successfully recovered\n");
6380
		ar->state = ATH10K_STATE_ON;
M
Michal Kazior 已提交
6381
		ieee80211_wake_queues(ar->hw);
6382 6383 6384 6385 6386
	}

	mutex_unlock(&ar->conf_mutex);
}

M
Michal Kazior 已提交
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
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];

6417 6418 6419
	if (ar->rx_channel == survey->channel)
		survey->filled |= SURVEY_INFO_IN_USE;

M
Michal Kazior 已提交
6420 6421 6422 6423 6424
exit:
	mutex_unlock(&ar->conf_mutex);
	return ret;
}

6425
static bool
6426 6427 6428
ath10k_mac_bitrate_mask_has_single_rate(struct ath10k *ar,
					enum ieee80211_band band,
					const struct cfg80211_bitrate_mask *mask)
6429
{
6430 6431
	int num_rates = 0;
	int i;
6432

6433
	num_rates += hweight32(mask->control[band].legacy);
6434

6435 6436
	for (i = 0; i < ARRAY_SIZE(mask->control[band].ht_mcs); i++)
		num_rates += hweight8(mask->control[band].ht_mcs[i]);
6437

6438 6439
	for (i = 0; i < ARRAY_SIZE(mask->control[band].vht_mcs); i++)
		num_rates += hweight16(mask->control[band].vht_mcs[i]);
6440

6441
	return num_rates == 1;
6442 6443 6444
}

static bool
6445 6446 6447 6448 6449 6450 6451 6452 6453 6454
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;
6455

6456
	if (mask->control[band].legacy)
6457 6458
		return false;

6459 6460
	for (i = 0; i < ARRAY_SIZE(mask->control[band].ht_mcs); i++) {
		if (mask->control[band].ht_mcs[i] == 0)
6461
			continue;
6462 6463 6464 6465 6466
		else if (mask->control[band].ht_mcs[i] ==
			 sband->ht_cap.mcs.rx_mask[i])
			ht_nss_mask |= BIT(i);
		else
			return false;
6467 6468
	}

6469 6470
	for (i = 0; i < ARRAY_SIZE(mask->control[band].vht_mcs); i++) {
		if (mask->control[band].vht_mcs[i] == 0)
6471
			continue;
6472 6473 6474 6475 6476
		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;
6477 6478
	}

6479
	if (ht_nss_mask != vht_nss_mask)
6480 6481
		return false;

6482
	if (ht_nss_mask == 0)
6483 6484
		return false;

6485
	if (BIT(fls(ht_nss_mask)) - 1 != ht_nss_mask)
6486 6487
		return false;

6488
	*nss = fls(ht_nss_mask);
6489 6490 6491 6492

	return true;
}

6493 6494 6495 6496 6497
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)
6498
{
6499 6500 6501 6502 6503 6504
	struct ieee80211_supported_band *sband = &ar->mac.sbands[band];
	int rate_idx;
	int i;
	u16 bitrate;
	u8 preamble;
	u8 hw_rate;
6505

6506 6507
	if (hweight32(mask->control[band].legacy) == 1) {
		rate_idx = ffs(mask->control[band].legacy) - 1;
6508

6509 6510
		hw_rate = sband->bitrates[rate_idx].hw_value;
		bitrate = sband->bitrates[rate_idx].bitrate;
6511

6512 6513 6514 6515
		if (ath10k_mac_bitrate_is_cck(bitrate))
			preamble = WMI_RATE_PREAMBLE_CCK;
		else
			preamble = WMI_RATE_PREAMBLE_OFDM;
6516

6517 6518 6519 6520
		*nss = 1;
		*rate = preamble << 6 |
			(*nss - 1) << 4 |
			hw_rate << 0;
6521

6522
		return 0;
6523 6524
	}

6525 6526 6527 6528 6529 6530
	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);
6531

6532 6533 6534
			return 0;
		}
	}
6535

6536 6537 6538 6539 6540 6541
	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);
6542

6543 6544 6545
			return 0;
		}
	}
6546

6547
	return -EINVAL;
6548 6549
}

6550
static int ath10k_mac_set_fixed_rate_params(struct ath10k_vif *arvif,
6551
					    u8 rate, u8 nss, u8 sgi, u8 ldpc)
6552 6553 6554
{
	struct ath10k *ar = arvif->ar;
	u32 vdev_param;
6555
	int ret;
6556

6557
	lockdep_assert_held(&ar->conf_mutex);
6558

6559 6560
	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);
6561

6562
	vdev_param = ar->wmi.vdev_param->fixed_rate;
6563
	ret = ath10k_wmi_vdev_set_param(ar, arvif->vdev_id, vdev_param, rate);
6564
	if (ret) {
6565
		ath10k_warn(ar, "failed to set fixed rate param 0x%02x: %d\n",
6566 6567
			    rate, ret);
		return ret;
6568 6569 6570
	}

	vdev_param = ar->wmi.vdev_param->nss;
6571
	ret = ath10k_wmi_vdev_set_param(ar, arvif->vdev_id, vdev_param, nss);
6572
	if (ret) {
6573 6574
		ath10k_warn(ar, "failed to set nss param %d: %d\n", nss, ret);
		return ret;
6575 6576
	}

6577
	vdev_param = ar->wmi.vdev_param->sgi;
6578
	ret = ath10k_wmi_vdev_set_param(ar, arvif->vdev_id, vdev_param, sgi);
6579
	if (ret) {
6580 6581
		ath10k_warn(ar, "failed to set sgi param %d: %d\n", sgi, ret);
		return ret;
6582 6583
	}

6584 6585 6586 6587 6588 6589 6590
	vdev_param = ar->wmi.vdev_param->ldpc;
	ret = ath10k_wmi_vdev_set_param(ar, arvif->vdev_id, vdev_param, ldpc);
	if (ret) {
		ath10k_warn(ar, "failed to set ldpc param %d: %d\n", ldpc, ret);
		return ret;
	}

6591
	return 0;
6592 6593
}

6594 6595 6596 6597 6598 6599 6600
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;
6601

6602 6603 6604 6605 6606 6607 6608 6609 6610 6611 6612 6613 6614 6615 6616 6617 6618
	/* 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;
		}
6619 6620
	}

6621 6622
	return true;
}
6623

6624 6625 6626 6627 6628 6629 6630 6631 6632 6633 6634 6635 6636 6637 6638
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);
6639 6640
}

6641 6642 6643
static int ath10k_mac_op_set_bitrate_mask(struct ieee80211_hw *hw,
					  struct ieee80211_vif *vif,
					  const struct cfg80211_bitrate_mask *mask)
6644 6645
{
	struct ath10k_vif *arvif = ath10k_vif_to_arvif(vif);
M
Michal Kazior 已提交
6646
	struct cfg80211_chan_def def;
6647
	struct ath10k *ar = arvif->ar;
M
Michal Kazior 已提交
6648
	enum ieee80211_band band;
6649 6650
	const u8 *ht_mcs_mask;
	const u16 *vht_mcs_mask;
6651 6652 6653
	u8 rate;
	u8 nss;
	u8 sgi;
6654
	u8 ldpc;
6655 6656
	int single_nss;
	int ret;
6657

M
Michal Kazior 已提交
6658 6659
	if (ath10k_mac_vif_chan(vif, &def))
		return -EPERM;
6660

M
Michal Kazior 已提交
6661
	band = def.chan->band;
6662 6663
	ht_mcs_mask = mask->control[band].ht_mcs;
	vht_mcs_mask = mask->control[band].vht_mcs;
6664
	ldpc = !!(ar->ht_cap_info & WMI_HT_CAP_LDPC);
6665

6666 6667
	sgi = mask->control[band].gi;
	if (sgi == NL80211_TXRATE_FORCE_LGI)
6668
		return -EINVAL;
6669

6670 6671 6672 6673 6674 6675 6676 6677 6678 6679 6680 6681 6682 6683
	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;
6684 6685 6686 6687 6688
		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))
6689
			return -EINVAL;
6690 6691 6692 6693 6694 6695 6696 6697 6698

		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);
6699 6700
	}

6701 6702
	mutex_lock(&ar->conf_mutex);

6703
	ret = ath10k_mac_set_fixed_rate_params(arvif, rate, nss, sgi, ldpc);
6704 6705 6706 6707
	if (ret) {
		ath10k_warn(ar, "failed to set fixed rate params on vdev %i: %d\n",
			    arvif->vdev_id, ret);
		goto exit;
6708 6709
	}

6710 6711 6712 6713
exit:
	mutex_unlock(&ar->conf_mutex);

	return ret;
6714 6715
}

6716 6717 6718 6719 6720 6721 6722 6723 6724 6725 6726
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);

6727
	ath10k_dbg(ar, ATH10K_DBG_MAC,
6728 6729 6730 6731 6732 6733 6734 6735 6736 6737 6738 6739 6740 6741 6742 6743 6744 6745
		   "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:
6746
			ath10k_warn(ar, "Invalid bandwidth %d in rc update for %pM\n",
6747
				    sta->bandwidth, sta->addr);
6748 6749 6750 6751 6752 6753 6754 6755 6756 6757 6758 6759 6760 6761 6762 6763 6764 6765 6766 6767 6768 6769 6770 6771 6772
			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:
6773
			ath10k_warn(ar, "Invalid smps %d in sta rc update for %pM\n",
6774
				    sta->smps_mode, sta->addr);
6775 6776 6777 6778 6779 6780 6781 6782 6783 6784 6785 6786 6787 6788
			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);
}

6789 6790 6791 6792 6793 6794 6795 6796 6797 6798
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;
}

6799 6800
static int ath10k_ampdu_action(struct ieee80211_hw *hw,
			       struct ieee80211_vif *vif,
6801
			       struct ieee80211_ampdu_params *params)
6802
{
6803
	struct ath10k *ar = hw->priv;
6804
	struct ath10k_vif *arvif = ath10k_vif_to_arvif(vif);
6805 6806 6807
	struct ieee80211_sta *sta = params->sta;
	enum ieee80211_ampdu_mlme_action action = params->action;
	u16 tid = params->tid;
6808

6809
	ath10k_dbg(ar, ATH10K_DBG_MAC, "mac ampdu vdev_id %i sta %pM tid %hu action %d\n",
6810 6811 6812 6813 6814 6815 6816 6817 6818 6819 6820 6821 6822 6823 6824 6825 6826 6827 6828 6829 6830 6831 6832
		   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
6833
static void
6834 6835 6836 6837
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
6838 6839 6840 6841 6842 6843 6844 6845 6846
{
	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);

6847 6848 6849
	WARN_ON(ctx && vifs);
	WARN_ON(vifs && n_vifs != 1);

M
Michal Kazior 已提交
6850 6851 6852 6853 6854 6855 6856 6857 6858 6859 6860
	/* 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();
6861
	if (!ctx && ath10k_mac_num_chanctxs(ar) == 1) {
M
Michal Kazior 已提交
6862
		ieee80211_iter_chan_contexts_atomic(ar->hw,
K
Kalle Valo 已提交
6863 6864
						    ath10k_mac_get_any_chandef_iter,
						    &def);
6865 6866 6867 6868

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

M
Michal Kazior 已提交
6869
		ar->rx_channel = def->chan;
6870 6871
	} else if (ctx && ath10k_mac_num_chanctxs(ar) == 0) {
		ar->rx_channel = ctx->def.chan;
M
Michal Kazior 已提交
6872 6873 6874 6875 6876 6877
	} else {
		ar->rx_channel = NULL;
	}
	rcu_read_unlock();
}

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 6910 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 6942 6943 6944 6945 6946 6947 6948 6949 6950 6951 6952 6953 6954 6955 6956 6957 6958 6959 6960 6961 6962 6963 6964 6965
static void
ath10k_mac_update_vif_chan(struct ath10k *ar,
			   struct ieee80211_vif_chanctx_switch *vifs,
			   int n_vifs)
{
	struct ath10k_vif *arvif;
	int ret;
	int i;

	lockdep_assert_held(&ar->conf_mutex);

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

	for (i = 0; i < n_vifs; i++) {
		arvif = ath10k_vif_to_arvif(vifs[i].vif);

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

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

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

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

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

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

	for (i = 0; i < n_vifs; i++) {
		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
6966 6967 6968 6969 6970 6971 6972 6973 6974 6975 6976 6977 6978
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);
6979
	ath10k_mac_update_rx_channel(ar, ctx, NULL, 0);
M
Michal Kazior 已提交
6980 6981 6982 6983 6984 6985 6986 6987 6988 6989 6990 6991 6992 6993 6994 6995 6996 6997 6998 6999 7000 7001 7002
	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);
7003
	ath10k_mac_update_rx_channel(ar, NULL, NULL, 0);
M
Michal Kazior 已提交
7004 7005 7006 7007 7008 7009 7010 7011
	spin_unlock_bh(&ar->data_lock);

	ath10k_recalc_radar_detection(ar);
	ath10k_monitor_recalc(ar);

	mutex_unlock(&ar->conf_mutex);
}

7012 7013 7014 7015 7016 7017 7018 7019 7020 7021 7022 7023 7024 7025 7026 7027 7028 7029 7030 7031 7032 7033 7034 7035 7036 7037 7038 7039 7040 7041 7042 7043 7044 7045 7046 7047 7048 7049 7050
struct ath10k_mac_change_chanctx_arg {
	struct ieee80211_chanctx_conf *ctx;
	struct ieee80211_vif_chanctx_switch *vifs;
	int n_vifs;
	int next_vif;
};

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

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

	arg->n_vifs++;
}

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

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

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

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

M
Michal Kazior 已提交
7051 7052 7053 7054 7055 7056
static void
ath10k_mac_op_change_chanctx(struct ieee80211_hw *hw,
			     struct ieee80211_chanctx_conf *ctx,
			     u32 changed)
{
	struct ath10k *ar = hw->priv;
7057
	struct ath10k_mac_change_chanctx_arg arg = { .ctx = ctx };
M
Michal Kazior 已提交
7058 7059 7060 7061

	mutex_lock(&ar->conf_mutex);

	ath10k_dbg(ar, ATH10K_DBG_MAC,
7062 7063
		   "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
7064 7065 7066 7067 7068 7069 7070

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

7071 7072 7073 7074 7075 7076 7077 7078 7079 7080 7081 7082 7083 7084 7085 7086 7087 7088 7089 7090 7091 7092 7093 7094
	if (changed & IEEE80211_CHANCTX_CHANGE_WIDTH) {
		ieee80211_iterate_active_interfaces_atomic(
					hw,
					IEEE80211_IFACE_ITER_NORMAL,
					ath10k_mac_change_chanctx_cnt_iter,
					&arg);
		if (arg.n_vifs == 0)
			goto radar;

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

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

radar:
M
Michal Kazior 已提交
7095 7096 7097 7098 7099 7100 7101 7102 7103 7104 7105 7106 7107 7108 7109 7110 7111 7112 7113 7114 7115 7116 7117 7118 7119 7120 7121 7122 7123 7124 7125 7126 7127
	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;
	}

7128
	ret = ath10k_vdev_start(arvif, &ctx->def);
M
Michal Kazior 已提交
7129 7130 7131
	if (ret) {
		ath10k_warn(ar, "failed to start vdev %i addr %pM on freq %d: %d\n",
			    arvif->vdev_id, vif->addr,
7132
			    ctx->def.chan->center_freq, ret);
M
Michal Kazior 已提交
7133 7134 7135 7136 7137
		goto err;
	}

	arvif->is_started = true;

7138 7139 7140 7141 7142 7143 7144
	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
7145 7146 7147 7148 7149 7150 7151 7152 7153 7154 7155 7156 7157 7158 7159 7160 7161
	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;
7162
	ath10k_mac_vif_setup_ps(arvif);
M
Michal Kazior 已提交
7163 7164 7165 7166 7167 7168 7169 7170 7171 7172 7173 7174 7175 7176 7177 7178 7179 7180 7181 7182 7183 7184 7185 7186 7187 7188 7189 7190 7191 7192 7193 7194 7195 7196 7197 7198 7199 7200 7201 7202 7203 7204 7205 7206 7207 7208 7209 7210 7211 7212 7213 7214 7215 7216 7217 7218 7219

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;

	mutex_lock(&ar->conf_mutex);

	ath10k_dbg(ar, ATH10K_DBG_MAC,
		   "mac chanctx switch n_vifs %d mode %d\n",
		   n_vifs, mode);
7220
	ath10k_mac_update_vif_chan(ar, vifs, n_vifs);
M
Michal Kazior 已提交
7221 7222 7223 7224 7225

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

7226
static const struct ieee80211_ops ath10k_ops = {
M
Michal Kazior 已提交
7227
	.tx				= ath10k_mac_op_tx,
M
Michal Kazior 已提交
7228
	.wake_tx_queue			= ath10k_mac_op_wake_tx_queue,
7229 7230 7231 7232 7233 7234 7235 7236 7237 7238
	.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,
7239
	.set_default_unicast_key        = ath10k_set_default_unicast_key,
7240 7241 7242 7243 7244
	.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,
7245
	.set_frag_threshold		= ath10k_mac_op_set_frag_threshold,
7246 7247
	.flush				= ath10k_flush,
	.tx_last_beacon			= ath10k_tx_last_beacon,
7248 7249
	.set_antenna			= ath10k_set_antenna,
	.get_antenna			= ath10k_get_antenna,
7250
	.reconfig_complete		= ath10k_reconfig_complete,
M
Michal Kazior 已提交
7251
	.get_survey			= ath10k_get_survey,
7252
	.set_bitrate_mask		= ath10k_mac_op_set_bitrate_mask,
7253
	.sta_rc_update			= ath10k_sta_rc_update,
7254
	.get_tsf			= ath10k_get_tsf,
7255
	.ampdu_action			= ath10k_ampdu_action,
B
Ben Greear 已提交
7256 7257 7258
	.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
7259 7260 7261 7262 7263 7264
	.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
7265 7266 7267

	CFG80211_TESTMODE_CMD(ath10k_tm_cmd)

M
Michal Kazior 已提交
7268
#ifdef CONFIG_PM
7269 7270
	.suspend			= ath10k_wow_op_suspend,
	.resume				= ath10k_wow_op_resume,
M
Michal Kazior 已提交
7271
#endif
7272 7273 7274
#ifdef CONFIG_MAC80211_DEBUGFS
	.sta_add_debugfs		= ath10k_sta_add_debugfs,
#endif
7275 7276 7277 7278 7279 7280 7281 7282 7283 7284 7285 7286 7287 7288 7289 7290 7291 7292 7293 7294 7295 7296 7297 7298 7299 7300 7301 7302 7303 7304 7305 7306 7307 7308 7309 7310 7311 7312
};

#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[] = {
7313 7314 7315 7316 7317 7318 7319 7320 7321 7322 7323 7324 7325 7326 7327 7328 7329 7330 7331
	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),
7332
	CHAN5G(144, 5720, 0),
7333 7334 7335 7336 7337
	CHAN5G(149, 5745, 0),
	CHAN5G(153, 5765, 0),
	CHAN5G(157, 5785, 0),
	CHAN5G(161, 5805, 0),
	CHAN5G(165, 5825, 0),
7338 7339
};

M
Michal Kazior 已提交
7340
struct ath10k *ath10k_mac_create(size_t priv_size)
7341 7342 7343 7344
{
	struct ieee80211_hw *hw;
	struct ath10k *ar;

M
Michal Kazior 已提交
7345
	hw = ieee80211_alloc_hw(sizeof(struct ath10k) + priv_size, &ath10k_ops);
7346 7347 7348 7349 7350 7351 7352 7353 7354 7355 7356 7357 7358 7359 7360 7361
	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[] = {
	{
7362 7363 7364
		.max	= 8,
		.types	= BIT(NL80211_IFTYPE_STATION)
			| BIT(NL80211_IFTYPE_P2P_CLIENT)
7365 7366
	},
	{
7367 7368
		.max	= 3,
		.types	= BIT(NL80211_IFTYPE_P2P_GO)
7369 7370
	},
	{
7371 7372
		.max	= 1,
		.types	= BIT(NL80211_IFTYPE_P2P_DEVICE)
M
Michal Kazior 已提交
7373 7374
	},
	{
7375 7376
		.max	= 7,
		.types	= BIT(NL80211_IFTYPE_AP)
B
Bob Copeland 已提交
7377
#ifdef CONFIG_MAC80211_MESH
7378
			| BIT(NL80211_IFTYPE_MESH_POINT)
B
Bob Copeland 已提交
7379
#endif
7380
	},
7381 7382
};

7383
static const struct ieee80211_iface_limit ath10k_10x_if_limits[] = {
7384
	{
7385 7386
		.max	= 8,
		.types	= BIT(NL80211_IFTYPE_AP)
B
Bob Copeland 已提交
7387
#ifdef CONFIG_MAC80211_MESH
7388
			| BIT(NL80211_IFTYPE_MESH_POINT)
B
Bob Copeland 已提交
7389
#endif
7390
	},
7391 7392 7393 7394
	{
		.max	= 1,
		.types	= BIT(NL80211_IFTYPE_STATION)
	},
7395 7396 7397 7398 7399 7400 7401 7402 7403 7404
};

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,
	},
7405 7406 7407
};

static const struct ieee80211_iface_combination ath10k_10x_if_comb[] = {
7408
	{
7409 7410
		.limits = ath10k_10x_if_limits,
		.n_limits = ARRAY_SIZE(ath10k_10x_if_limits),
7411 7412 7413
		.max_interfaces = 8,
		.num_different_channels = 1,
		.beacon_int_infra_match = true,
7414
#ifdef CONFIG_ATH10K_DFS_CERTIFIED
7415 7416 7417 7418 7419
		.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
7420
	},
7421 7422
};

7423 7424 7425
static const struct ieee80211_iface_limit ath10k_tlv_if_limit[] = {
	{
		.max = 2,
7426 7427 7428 7429 7430
		.types = BIT(NL80211_IFTYPE_STATION),
	},
	{
		.max = 2,
		.types = BIT(NL80211_IFTYPE_AP) |
B
Bob Copeland 已提交
7431 7432 7433
#ifdef CONFIG_MAC80211_MESH
			 BIT(NL80211_IFTYPE_MESH_POINT) |
#endif
7434 7435 7436 7437 7438 7439 7440 7441 7442
			 BIT(NL80211_IFTYPE_P2P_CLIENT) |
			 BIT(NL80211_IFTYPE_P2P_GO),
	},
	{
		.max = 1,
		.types = BIT(NL80211_IFTYPE_P2P_DEVICE),
	},
};

7443 7444 7445 7446 7447 7448 7449 7450 7451 7452 7453 7454
static const struct ieee80211_iface_limit ath10k_tlv_qcs_if_limit[] = {
	{
		.max = 2,
		.types = BIT(NL80211_IFTYPE_STATION),
	},
	{
		.max = 2,
		.types = BIT(NL80211_IFTYPE_P2P_CLIENT),
	},
	{
		.max = 1,
		.types = BIT(NL80211_IFTYPE_AP) |
B
Bob Copeland 已提交
7455 7456 7457
#ifdef CONFIG_MAC80211_MESH
			 BIT(NL80211_IFTYPE_MESH_POINT) |
#endif
7458 7459 7460 7461 7462 7463 7464 7465
			 BIT(NL80211_IFTYPE_P2P_GO),
	},
	{
		.max = 1,
		.types = BIT(NL80211_IFTYPE_P2P_DEVICE),
	},
};

7466 7467 7468 7469 7470 7471 7472 7473 7474 7475 7476 7477 7478 7479 7480 7481 7482 7483
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,
7484
		.max_interfaces = 4,
7485 7486 7487 7488 7489 7490 7491 7492 7493 7494 7495 7496 7497
		.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,
7498 7499
		.num_different_channels = 1,
		.max_interfaces = 4,
7500 7501
		.n_limits = ARRAY_SIZE(ath10k_tlv_if_limit),
	},
7502 7503 7504 7505 7506 7507
	{
		.limits = ath10k_tlv_qcs_if_limit,
		.num_different_channels = 2,
		.max_interfaces = 4,
		.n_limits = ARRAY_SIZE(ath10k_tlv_qcs_if_limit),
	},
7508 7509 7510 7511 7512 7513 7514 7515
	{
		.limits = ath10k_tlv_if_limit_ibss,
		.num_different_channels = 1,
		.max_interfaces = 2,
		.n_limits = ARRAY_SIZE(ath10k_tlv_if_limit_ibss),
	},
};

7516 7517 7518 7519 7520 7521 7522 7523
static const struct ieee80211_iface_limit ath10k_10_4_if_limits[] = {
	{
		.max = 1,
		.types = BIT(NL80211_IFTYPE_STATION),
	},
	{
		.max	= 16,
		.types	= BIT(NL80211_IFTYPE_AP)
B
Bob Copeland 已提交
7524 7525 7526
#ifdef CONFIG_MAC80211_MESH
			| BIT(NL80211_IFTYPE_MESH_POINT)
#endif
7527 7528 7529 7530 7531 7532 7533 7534 7535 7536 7537 7538 7539 7540 7541 7542 7543 7544 7545
	},
};

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
	},
};

7546 7547 7548 7549 7550 7551 7552 7553 7554 7555 7556 7557 7558 7559 7560 7561 7562 7563 7564 7565 7566 7567 7568 7569
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) {
7570
		ath10k_warn(ar, "No VIF found for vdev %d\n", vdev_id);
7571 7572 7573 7574 7575 7576 7577 7578
		return NULL;
	}

	return arvif_iter.arvif;
}

int ath10k_mac_register(struct ath10k *ar)
{
7579 7580 7581 7582 7583 7584 7585
	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,
	};
7586 7587 7588 7589 7590 7591 7592 7593
	struct ieee80211_supported_band *band;
	void *channels;
	int ret;

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

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

M
Michal Kazior 已提交
7594 7595 7596 7597
	BUILD_BUG_ON((ARRAY_SIZE(ath10k_2ghz_channels) +
		      ARRAY_SIZE(ath10k_5ghz_channels)) !=
		     ATH10K_NUM_CHANS);

7598 7599 7600 7601
	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
7602 7603 7604 7605
		if (!channels) {
			ret = -ENOMEM;
			goto err_free;
		}
7606 7607 7608 7609 7610 7611 7612 7613 7614 7615 7616 7617 7618 7619 7620

		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;

		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
7621 7622
			ret = -ENOMEM;
			goto err_free;
7623 7624 7625 7626 7627 7628 7629 7630 7631 7632
		}

		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;
		ar->hw->wiphy->bands[IEEE80211_BAND_5GHZ] = band;
	}

7633 7634
	ath10k_mac_setup_ht_vht_cap(ar);

7635 7636
	ar->hw->wiphy->interface_modes =
		BIT(NL80211_IFTYPE_STATION) |
B
Bob Copeland 已提交
7637 7638
		BIT(NL80211_IFTYPE_AP) |
		BIT(NL80211_IFTYPE_MESH_POINT);
7639

7640 7641
	ar->hw->wiphy->available_antennas_rx = ar->cfg_rx_chainmask;
	ar->hw->wiphy->available_antennas_tx = ar->cfg_tx_chainmask;
7642

7643 7644
	if (!test_bit(ATH10K_FW_FEATURE_NO_P2P, ar->fw_features))
		ar->hw->wiphy->interface_modes |=
M
Michal Kazior 已提交
7645
			BIT(NL80211_IFTYPE_P2P_DEVICE) |
7646 7647
			BIT(NL80211_IFTYPE_P2P_CLIENT) |
			BIT(NL80211_IFTYPE_P2P_GO);
7648

7649 7650 7651 7652 7653 7654 7655 7656 7657 7658 7659 7660 7661 7662
	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);
7663

7664 7665 7666
	if (!test_bit(ATH10K_FLAG_RAW_MODE, &ar->dev_flags))
		ieee80211_hw_set(ar->hw, SW_CRYPTO_CONTROL);

7667
	ar->hw->wiphy->features |= NL80211_FEATURE_STATIC_SMPS;
J
Janusz Dziedzic 已提交
7668
	ar->hw->wiphy->flags |= WIPHY_FLAG_IBSS_RSN;
7669

7670
	if (ar->ht_cap_info & WMI_HT_CAP_DYNAMIC_SMPS)
7671
		ar->hw->wiphy->features |= NL80211_FEATURE_DYNAMIC_SMPS;
7672 7673

	if (ar->ht_cap_info & WMI_HT_CAP_ENABLED) {
7674 7675
		ieee80211_hw_set(ar->hw, AMPDU_AGGREGATION);
		ieee80211_hw_set(ar->hw, TX_AMPDU_SETUP_IN_HW);
7676 7677 7678 7679 7680 7681
	}

	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);
7682
	ar->hw->sta_data_size = sizeof(struct ath10k_sta);
M
Michal Kazior 已提交
7683
	ar->hw->txq_data_size = sizeof(struct ath10k_txq);
7684 7685 7686

	ar->hw->max_listen_interval = ATH10K_MAX_HW_LISTEN_INTERVAL;

7687 7688 7689 7690 7691 7692 7693 7694 7695 7696 7697 7698 7699
	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;
	}

7700 7701 7702
	if (test_bit(WMI_SERVICE_TDLS, ar->wmi.svc_map))
		ar->hw->wiphy->flags |= WIPHY_FLAG_SUPPORTS_TDLS;

7703
	ar->hw->wiphy->flags |= WIPHY_FLAG_HAS_REMAIN_ON_CHANNEL;
M
Michal Kazior 已提交
7704
	ar->hw->wiphy->flags |= WIPHY_FLAG_HAS_CHANNEL_SWITCH;
7705 7706 7707
	ar->hw->wiphy->max_remain_on_channel_duration = 5000;

	ar->hw->wiphy->flags |= WIPHY_FLAG_AP_UAPSD;
7708 7709
	ar->hw->wiphy->features |= NL80211_FEATURE_AP_MODE_CHAN_WIDTH_CHANGE |
				   NL80211_FEATURE_AP_SCAN;
7710

7711 7712
	ar->hw->wiphy->max_ap_assoc_sta = ar->max_num_stations;

7713 7714 7715 7716 7717 7718
	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
7719 7720
	wiphy_ext_feature_set(ar->hw->wiphy, NL80211_EXT_FEATURE_VHT_IBSS);

7721 7722 7723 7724
	/*
	 * 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
7725 7726 7727 7728 7729 7730 7731
	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;
7732

7733 7734
	switch (ar->wmi.op_version) {
	case ATH10K_FW_WMI_OP_VERSION_MAIN:
7735 7736 7737
		ar->hw->wiphy->iface_combinations = ath10k_if_comb;
		ar->hw->wiphy->n_iface_combinations =
			ARRAY_SIZE(ath10k_if_comb);
7738
		ar->hw->wiphy->interface_modes |= BIT(NL80211_IFTYPE_ADHOC);
7739
		break;
7740 7741 7742 7743 7744 7745 7746 7747 7748 7749 7750 7751 7752
	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;
7753 7754
	case ATH10K_FW_WMI_OP_VERSION_10_1:
	case ATH10K_FW_WMI_OP_VERSION_10_2:
7755
	case ATH10K_FW_WMI_OP_VERSION_10_2_4:
7756 7757 7758 7759
		ar->hw->wiphy->iface_combinations = ath10k_10x_if_comb;
		ar->hw->wiphy->n_iface_combinations =
			ARRAY_SIZE(ath10k_10x_if_comb);
		break;
7760
	case ATH10K_FW_WMI_OP_VERSION_10_4:
7761 7762 7763
		ar->hw->wiphy->iface_combinations = ath10k_10_4_if_comb;
		ar->hw->wiphy->n_iface_combinations =
			ARRAY_SIZE(ath10k_10_4_if_comb);
7764
		break;
7765 7766 7767 7768 7769
	case ATH10K_FW_WMI_OP_VERSION_UNSET:
	case ATH10K_FW_WMI_OP_VERSION_MAX:
		WARN_ON(1);
		ret = -EINVAL;
		goto err_free;
7770
	}
7771

7772 7773
	if (!test_bit(ATH10K_FLAG_RAW_MODE, &ar->dev_flags))
		ar->hw->netdev_features = NETIF_F_HW_CSUM;
7774

J
Janusz Dziedzic 已提交
7775 7776 7777 7778 7779 7780 7781
	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)
7782
			ath10k_warn(ar, "failed to initialise DFS pattern detector\n");
J
Janusz Dziedzic 已提交
7783 7784
	}

7785 7786 7787
	ret = ath_regd_init(&ar->ath_common.regulatory, ar->hw->wiphy,
			    ath10k_reg_notifier);
	if (ret) {
7788
		ath10k_err(ar, "failed to initialise regulatory: %i\n", ret);
7789
		goto err_dfs_detector_exit;
7790 7791
	}

7792 7793 7794
	ar->hw->wiphy->cipher_suites = cipher_suites;
	ar->hw->wiphy->n_cipher_suites = ARRAY_SIZE(cipher_suites);

7795 7796
	ret = ieee80211_register_hw(ar->hw);
	if (ret) {
7797
		ath10k_err(ar, "failed to register ieee80211: %d\n", ret);
7798
		goto err_dfs_detector_exit;
7799 7800 7801 7802 7803 7804
	}

	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
7805
			goto err_unregister;
7806 7807 7808
	}

	return 0;
M
Michal Kazior 已提交
7809 7810

err_unregister:
7811
	ieee80211_unregister_hw(ar->hw);
7812 7813 7814 7815 7816

err_dfs_detector_exit:
	if (config_enabled(CONFIG_ATH10K_DFS_CERTIFIED) && ar->dfs_detector)
		ar->dfs_detector->exit(ar->dfs_detector);

M
Michal Kazior 已提交
7817 7818 7819 7820
err_free:
	kfree(ar->mac.sbands[IEEE80211_BAND_2GHZ].channels);
	kfree(ar->mac.sbands[IEEE80211_BAND_5GHZ].channels);

7821
	SET_IEEE80211_DEV(ar->hw, NULL);
7822 7823 7824 7825 7826 7827 7828
	return ret;
}

void ath10k_mac_unregister(struct ath10k *ar)
{
	ieee80211_unregister_hw(ar->hw);

J
Janusz Dziedzic 已提交
7829 7830 7831
	if (config_enabled(CONFIG_ATH10K_DFS_CERTIFIED) && ar->dfs_detector)
		ar->dfs_detector->exit(ar->dfs_detector);

7832 7833 7834 7835 7836
	kfree(ar->mac.sbands[IEEE80211_BAND_2GHZ].channels);
	kfree(ar->mac.sbands[IEEE80211_BAND_5GHZ].channels);

	SET_IEEE80211_DEV(ar->hw, NULL);
}