mac.c 153.6 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"
#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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};

#define ath10k_a_rates (ath10k_rates + 4)
#define ath10k_a_rates_size (ARRAY_SIZE(ath10k_rates) - 4)
#define ath10k_g_rates (ath10k_rates + 0)
#define ath10k_g_rates_size (ARRAY_SIZE(ath10k_rates))

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

	return false;
}

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

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

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

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

	return 0;
}

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/**********/
/* 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;
	}

	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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	lockdep_assert_held(&ar->conf_mutex);

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	reinit_completion(&ar->install_key_done);
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	ret = ath10k_send_key(arvif, key, cmd, macaddr, flags);
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	if (ret)
		return ret;

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

	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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		flags = 0;
		flags |= WMI_KEY_PAIRWISE;

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		/* set TX_USAGE flag for default key id */
		if (arvif->def_wep_key_idx == i)
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			flags |= WMI_KEY_TX_USAGE;
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		ret = ath10k_install_key(arvif, arvif->wep_keys[i], SET_KEY,
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					 addr, flags);
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		if (ret)
			return ret;

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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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	}

	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 && first_errno == 0)
			first_errno = ret;

		if (ret)
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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 && first_errno == 0)
			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_sta_fix_wep_key(struct ath10k_vif *arvif)
{
	struct ath10k *ar = arvif->ar;
	enum nl80211_iftype iftype = arvif->vif->type;
	struct ieee80211_key_conf *key;
	u32 flags = 0;
	int num = 0;
	int i;
	int ret;

	lockdep_assert_held(&ar->conf_mutex);

	if (iftype != NL80211_IFTYPE_STATION)
		return 0;

	for (i = 0; i < ARRAY_SIZE(arvif->wep_keys); i++) {
		if (arvif->wep_keys[i]) {
			key = arvif->wep_keys[i];
			++num;
		}
	}

	if (num != 1)
		return 0;

	flags |= WMI_KEY_PAIRWISE;
	flags |= WMI_KEY_TX_USAGE;

	ret = ath10k_install_key(arvif, key, SET_KEY, arvif->bssid, flags);
	if (ret) {
		ath10k_warn(ar, "failed to install key %i on vdev %i: %d\n",
			    key->keyidx, arvif->vdev_id, ret);
		return ret;
	}

	return 0;
}

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

	lockdep_assert_held(&ar->conf_mutex);

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

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

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

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

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

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

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

	return 0;
}

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

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

static int ath10k_mac_set_frag(struct ath10k_vif *arvif, u32 value)
{
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	struct ath10k *ar = arvif->ar;
	u32 vdev_param;

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	if (value != 0xFFFFFFFF)
		value = clamp_t(u32, arvif->ar->hw->wiphy->frag_threshold,
				ATH10K_FRAGMT_THRESHOLD_MIN,
				ATH10K_FRAGMT_THRESHOLD_MAX);

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

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

	lockdep_assert_held(&ar->conf_mutex);

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

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

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	ar->num_peers--;

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	return 0;
}

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

	lockdep_assert_held(&ar->conf_mutex);

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

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

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

642 643 644 645 646 647 648 649 650 651 652 653
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;
656
	ar->num_stations = 0;
657 658
}

659 660 661 662 663 664 665 666 667 668 669 670 671 672 673 674 675 676 677 678 679 680 681 682 683 684 685 686 687 688 689 690
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;
}

691 692 693 694
/************************/
/* Interface management */
/************************/

695 696 697 698 699 700 701 702 703 704 705 706 707
void ath10k_mac_vif_beacon_free(struct ath10k_vif *arvif)
{
	struct ath10k *ar = arvif->ar;

	lockdep_assert_held(&ar->data_lock);

	if (!arvif->beacon)
		return;

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

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

712 713 714
	dev_kfree_skb_any(arvif->beacon);

	arvif->beacon = NULL;
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	arvif->beacon_state = ATH10K_BEACON_SCHEDULED;
716 717 718 719 720 721 722 723 724 725 726 727 728 729 730 731 732
}

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;
	}
}

733 734 735 736
static inline int ath10k_vdev_setup_sync(struct ath10k *ar)
{
	int ret;

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	lockdep_assert_held(&ar->conf_mutex);

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

742 743 744 745 746 747 748 749
	ret = wait_for_completion_timeout(&ar->vdev_setup_done,
					  ATH10K_VDEV_SETUP_TIMEOUT_HZ);
	if (ret == 0)
		return -ETIMEDOUT;

	return 0;
}

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static int ath10k_monitor_vdev_start(struct ath10k *ar, int vdev_id)
751
{
752 753
	struct cfg80211_chan_def *chandef = &ar->chandef;
	struct ieee80211_channel *channel = chandef->chan;
754 755 756 757 758 759 760
	struct wmi_vdev_start_request_arg arg = {};
	int ret = 0;

	lockdep_assert_held(&ar->conf_mutex);

	arg.vdev_id = vdev_id;
	arg.channel.freq = channel->center_freq;
761
	arg.channel.band_center_freq1 = chandef->center_freq1;
762 763 764

	/* TODO setup this dynamically, what in case we
	   don't have any vifs? */
765
	arg.channel.mode = chan_to_phymode(chandef);
766 767
	arg.channel.chan_radar =
			!!(channel->flags & IEEE80211_CHAN_RADAR);
768

769
	arg.channel.min_power = 0;
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	arg.channel.max_power = channel->max_power * 2;
	arg.channel.max_reg_power = channel->max_reg_power * 2;
	arg.channel.max_antenna_gain = channel->max_antenna_gain * 2;
773

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	reinit_completion(&ar->vdev_setup_done);

776 777
	ret = ath10k_wmi_vdev_start(ar, &arg);
	if (ret) {
778
		ath10k_warn(ar, "failed to request monitor vdev %i start: %d\n",
779
			    vdev_id, ret);
780 781 782 783 784
		return ret;
	}

	ret = ath10k_vdev_setup_sync(ar);
	if (ret) {
785
		ath10k_warn(ar, "failed to synchronize setup for monitor vdev %i start: %d\n",
786
			    vdev_id, ret);
787 788 789 790 791
		return ret;
	}

	ret = ath10k_wmi_vdev_up(ar, vdev_id, 0, ar->mac_addr);
	if (ret) {
792
		ath10k_warn(ar, "failed to put up monitor vdev %i: %d\n",
793
			    vdev_id, ret);
794 795 796 797 798
		goto vdev_stop;
	}

	ar->monitor_vdev_id = vdev_id;

799
	ath10k_dbg(ar, ATH10K_DBG_MAC, "mac monitor vdev %i started\n",
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		   ar->monitor_vdev_id);
801 802 803 804 805
	return 0;

vdev_stop:
	ret = ath10k_wmi_vdev_stop(ar, ar->monitor_vdev_id);
	if (ret)
806
		ath10k_warn(ar, "failed to stop monitor vdev %i after start failure: %d\n",
807
			    ar->monitor_vdev_id, ret);
808 809 810 811

	return ret;
}

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static int ath10k_monitor_vdev_stop(struct ath10k *ar)
813 814 815 816 817
{
	int ret = 0;

	lockdep_assert_held(&ar->conf_mutex);

818 819
	ret = ath10k_wmi_vdev_down(ar, ar->monitor_vdev_id);
	if (ret)
820
		ath10k_warn(ar, "failed to put down monitor vdev %i: %d\n",
821
			    ar->monitor_vdev_id, ret);
822

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	reinit_completion(&ar->vdev_setup_done);

825 826
	ret = ath10k_wmi_vdev_stop(ar, ar->monitor_vdev_id);
	if (ret)
827
		ath10k_warn(ar, "failed to to request monitor vdev %i stop: %d\n",
828
			    ar->monitor_vdev_id, ret);
829 830 831

	ret = ath10k_vdev_setup_sync(ar);
	if (ret)
832
		ath10k_warn(ar, "failed to synchronize monitor vdev %i stop: %d\n",
833
			    ar->monitor_vdev_id, ret);
834

835
	ath10k_dbg(ar, ATH10K_DBG_MAC, "mac monitor vdev %i stopped\n",
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		   ar->monitor_vdev_id);
837 838 839
	return ret;
}

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static int ath10k_monitor_vdev_create(struct ath10k *ar)
841 842 843 844 845
{
	int bit, ret = 0;

	lockdep_assert_held(&ar->conf_mutex);

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	if (ar->free_vdev_map == 0) {
847
		ath10k_warn(ar, "failed to find free vdev id for monitor vdev\n");
848 849 850
		return -ENOMEM;
	}

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851
	bit = __ffs64(ar->free_vdev_map);
B
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852

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853
	ar->monitor_vdev_id = bit;
854 855 856 857 858

	ret = ath10k_wmi_vdev_create(ar, ar->monitor_vdev_id,
				     WMI_VDEV_TYPE_MONITOR,
				     0, ar->mac_addr);
	if (ret) {
859
		ath10k_warn(ar, "failed to request monitor vdev %i creation: %d\n",
860
			    ar->monitor_vdev_id, ret);
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861
		return ret;
862 863
	}

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864
	ar->free_vdev_map &= ~(1LL << ar->monitor_vdev_id);
865
	ath10k_dbg(ar, ATH10K_DBG_MAC, "mac monitor vdev %d created\n",
866 867 868 869 870
		   ar->monitor_vdev_id);

	return 0;
}

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static int ath10k_monitor_vdev_delete(struct ath10k *ar)
872 873 874 875 876 877 878
{
	int ret = 0;

	lockdep_assert_held(&ar->conf_mutex);

	ret = ath10k_wmi_vdev_delete(ar, ar->monitor_vdev_id);
	if (ret) {
879
		ath10k_warn(ar, "failed to request wmi monitor vdev %i removal: %d\n",
880
			    ar->monitor_vdev_id, ret);
881 882 883
		return ret;
	}

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884
	ar->free_vdev_map |= 1LL << ar->monitor_vdev_id;
885

886
	ath10k_dbg(ar, ATH10K_DBG_MAC, "mac monitor vdev %d deleted\n",
887 888 889 890
		   ar->monitor_vdev_id);
	return ret;
}

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

	lockdep_assert_held(&ar->conf_mutex);

	ret = ath10k_monitor_vdev_create(ar);
	if (ret) {
899
		ath10k_warn(ar, "failed to create monitor vdev: %d\n", ret);
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		return ret;
	}

	ret = ath10k_monitor_vdev_start(ar, ar->monitor_vdev_id);
	if (ret) {
905
		ath10k_warn(ar, "failed to start monitor vdev: %d\n", ret);
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		ath10k_monitor_vdev_delete(ar);
		return ret;
	}

	ar->monitor_started = true;
911
	ath10k_dbg(ar, ATH10K_DBG_MAC, "mac monitor started\n");
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	return 0;
}

916
static int ath10k_monitor_stop(struct ath10k *ar)
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{
	int ret;

	lockdep_assert_held(&ar->conf_mutex);

	ret = ath10k_monitor_vdev_stop(ar);
923
	if (ret) {
924
		ath10k_warn(ar, "failed to stop monitor vdev: %d\n", ret);
925 926
		return ret;
	}
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Michal Kazior 已提交
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	ret = ath10k_monitor_vdev_delete(ar);
929
	if (ret) {
930
		ath10k_warn(ar, "failed to delete monitor vdev: %d\n", ret);
931 932
		return ret;
	}
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	ar->monitor_started = false;
935
	ath10k_dbg(ar, ATH10K_DBG_MAC, "mac monitor stopped\n");
936 937 938 939

	return 0;
}

940 941 942 943 944 945 946 947 948 949 950 951 952 953 954 955 956 957 958
static bool ath10k_mac_should_disable_promisc(struct ath10k *ar)
{
	struct ath10k_vif *arvif;

	if (!(ar->filter_flags & FIF_PROMISC_IN_BSS))
		return true;

	if (!ar->num_started_vdevs)
		return false;

	list_for_each_entry(arvif, &ar->arvifs, list)
		if (arvif->vdev_type != WMI_VDEV_TYPE_AP)
			return false;

	ath10k_dbg(ar, ATH10K_DBG_MAC,
		   "mac disabling promiscuous mode because vdev is started\n");
	return true;
}

959 960 961 962 963 964 965
static int ath10k_monitor_recalc(struct ath10k *ar)
{
	bool should_start;

	lockdep_assert_held(&ar->conf_mutex);

	should_start = ar->monitor ||
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		       !ath10k_mac_should_disable_promisc(ar) ||
967 968 969 970 971 972 973 974 975 976 977
		       test_bit(ATH10K_CAC_RUNNING, &ar->dev_flags);

	ath10k_dbg(ar, ATH10K_DBG_MAC,
		   "mac monitor recalc started? %d should? %d\n",
		   ar->monitor_started, should_start);

	if (should_start == ar->monitor_started)
		return 0;

	if (should_start)
		return ath10k_monitor_start(ar);
978 979

	return ath10k_monitor_stop(ar);
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}

982 983 984 985 986 987 988 989 990
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;

991
	rts_cts |= SM(WMI_RTSCTS_ENABLED, WMI_RTSCTS_SET);
992 993 994 995

	if (arvif->num_legacy_stations > 0)
		rts_cts |= SM(WMI_RTSCTS_ACROSS_SW_RETRIES,
			      WMI_RTSCTS_PROFILE);
996 997 998
	else
		rts_cts |= SM(WMI_RTSCTS_FOR_SECOND_RATESERIES,
			      WMI_RTSCTS_PROFILE);
999 1000 1001 1002 1003

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

1004 1005 1006 1007 1008 1009 1010 1011
static int ath10k_start_cac(struct ath10k *ar)
{
	int ret;

	lockdep_assert_held(&ar->conf_mutex);

	set_bit(ATH10K_CAC_RUNNING, &ar->dev_flags);

1012
	ret = ath10k_monitor_recalc(ar);
1013
	if (ret) {
1014
		ath10k_warn(ar, "failed to start monitor (cac): %d\n", ret);
1015 1016 1017 1018
		clear_bit(ATH10K_CAC_RUNNING, &ar->dev_flags);
		return ret;
	}

1019
	ath10k_dbg(ar, ATH10K_DBG_MAC, "mac cac start monitor vdev %d\n",
1020 1021 1022 1023 1024 1025 1026 1027 1028 1029 1030 1031 1032 1033
		   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);
1035

1036
	ath10k_dbg(ar, ATH10K_DBG_MAC, "mac cac finished\n");
1037 1038 1039 1040

	return 0;
}

1041
static void ath10k_recalc_radar_detection(struct ath10k *ar)
1042 1043 1044 1045 1046 1047 1048
{
	int ret;

	lockdep_assert_held(&ar->conf_mutex);

	ath10k_stop_cac(ar);

1049
	if (!ar->radar_enabled)
1050 1051
		return;

1052
	if (ar->num_started_vdevs > 0)
1053 1054 1055 1056 1057 1058 1059 1060 1061
		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.
		 */
1062
		ath10k_warn(ar, "failed to start CAC: %d\n", ret);
1063 1064 1065 1066
		ieee80211_radar_detected(ar->hw);
	}
}

1067 1068 1069 1070 1071 1072 1073 1074 1075 1076 1077 1078 1079 1080 1081 1082 1083 1084 1085 1086 1087 1088 1089 1090 1091 1092 1093 1094 1095 1096 1097 1098 1099
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;
}

1100
static int ath10k_vdev_start_restart(struct ath10k_vif *arvif, bool restart)
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Michal Kazior 已提交
1101 1102 1103 1104
{
	struct ath10k *ar = arvif->ar;
	struct cfg80211_chan_def *chandef = &ar->chandef;
	struct wmi_vdev_start_request_arg arg = {};
1105
	int ret = 0, ret2;
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1106 1107 1108 1109 1110 1111 1112 1113 1114 1115 1116 1117 1118 1119 1120 1121 1122 1123 1124 1125 1126 1127 1128 1129 1130 1131 1132 1133 1134 1135 1136

	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;
	}

1137
	ath10k_dbg(ar, ATH10K_DBG_MAC,
M
Michal Kazior 已提交
1138 1139 1140 1141
		   "mac vdev %d start center_freq %d phymode %s\n",
		   arg.vdev_id, arg.channel.freq,
		   ath10k_wmi_phymode_str(arg.channel.mode));

1142 1143 1144 1145 1146
	if (restart)
		ret = ath10k_wmi_vdev_restart(ar, &arg);
	else
		ret = ath10k_wmi_vdev_start(ar, &arg);

M
Michal Kazior 已提交
1147
	if (ret) {
1148
		ath10k_warn(ar, "failed to start WMI vdev %i: %d\n",
M
Michal Kazior 已提交
1149 1150 1151 1152 1153 1154
			    arg.vdev_id, ret);
		return ret;
	}

	ret = ath10k_vdev_setup_sync(ar);
	if (ret) {
1155 1156 1157
		ath10k_warn(ar,
			    "failed to synchronize setup for vdev %i restart %d: %d\n",
			    arg.vdev_id, restart, ret);
M
Michal Kazior 已提交
1158 1159 1160
		return ret;
	}

1161 1162 1163
	ar->num_started_vdevs++;
	ath10k_recalc_radar_detection(ar);

1164 1165 1166 1167 1168 1169 1170 1171 1172 1173
	ret = ath10k_monitor_recalc(ar);
	if (ret) {
		ath10k_warn(ar, "mac failed to recalc monitor for vdev %i restart %d: %d\n",
			    arg.vdev_id, restart, ret);
		ret2 = ath10k_vdev_stop(arvif);
		if (ret2)
			ath10k_warn(ar, "mac failed to stop vdev %i restart %d: %d\n",
				    arg.vdev_id, restart, ret2);
	}

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	return ret;
}

1177 1178 1179 1180 1181 1182 1183 1184 1185 1186
static int ath10k_vdev_start(struct ath10k_vif *arvif)
{
	return ath10k_vdev_start_restart(arvif, false);
}

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

1187 1188 1189 1190 1191 1192 1193 1194 1195 1196 1197 1198 1199 1200 1201 1202 1203 1204 1205 1206 1207 1208 1209 1210 1211 1212 1213 1214 1215 1216 1217 1218 1219 1220 1221 1222 1223 1224 1225 1226 1227 1228 1229 1230 1231 1232 1233 1234 1235 1236 1237 1238 1239 1240 1241 1242 1243 1244 1245 1246 1247 1248 1249 1250 1251 1252 1253 1254 1255 1256 1257 1258 1259 1260
static int ath10k_mac_setup_bcn_p2p_ie(struct ath10k_vif *arvif,
				       struct sk_buff *bcn)
{
	struct ath10k *ar = arvif->ar;
	struct ieee80211_mgmt *mgmt;
	const u8 *p2p_ie;
	int ret;

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

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

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

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

	return 0;
}

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

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

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

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

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

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

	return 0;
}

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

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

1261 1262 1263 1264
	if (arvif->vdev_type != WMI_VDEV_TYPE_AP &&
	    arvif->vdev_type != WMI_VDEV_TYPE_IBSS)
		return 0;

1265 1266 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 1300 1301 1302 1303 1304 1305 1306 1307 1308 1309
	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;

1310 1311 1312
	if (arvif->vdev_type != WMI_VDEV_TYPE_AP)
		return 0;

1313 1314 1315 1316 1317 1318 1319 1320 1321 1322 1323 1324 1325 1326 1327 1328 1329 1330
	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;
}

1331
static void ath10k_control_beaconing(struct ath10k_vif *arvif,
1332
				     struct ieee80211_bss_conf *info)
1333
{
1334
	struct ath10k *ar = arvif->ar;
1335 1336
	int ret = 0;

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1337 1338
	lockdep_assert_held(&arvif->ar->conf_mutex);

1339 1340
	if (!info->enable_beacon) {
		ath10k_vdev_stop(arvif);
1341 1342 1343

		arvif->is_started = false;
		arvif->is_up = false;
1344 1345

		spin_lock_bh(&arvif->ar->data_lock);
1346
		ath10k_mac_vif_beacon_free(arvif);
1347 1348
		spin_unlock_bh(&arvif->ar->data_lock);

1349 1350 1351 1352 1353 1354 1355 1356 1357
		return;
	}

	arvif->tx_seq_no = 0x1000;

	ret = ath10k_vdev_start(arvif);
	if (ret)
		return;

1358
	arvif->aid = 0;
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1359
	ether_addr_copy(arvif->bssid, info->bssid);
1360 1361 1362

	ret = ath10k_wmi_vdev_up(arvif->ar, arvif->vdev_id, arvif->aid,
				 arvif->bssid);
1363
	if (ret) {
1364
		ath10k_warn(ar, "failed to bring up vdev %d: %i\n",
1365
			    arvif->vdev_id, ret);
1366
		ath10k_vdev_stop(arvif);
1367 1368
		return;
	}
1369 1370 1371 1372

	arvif->is_started = true;
	arvif->is_up = true;

1373
	ath10k_dbg(ar, ATH10K_DBG_MAC, "mac vdev %d up\n", arvif->vdev_id);
1374 1375 1376 1377 1378 1379
}

static void ath10k_control_ibss(struct ath10k_vif *arvif,
				struct ieee80211_bss_conf *info,
				const u8 self_peer[ETH_ALEN])
{
1380
	struct ath10k *ar = arvif->ar;
1381
	u32 vdev_param;
1382 1383
	int ret = 0;

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1384 1385
	lockdep_assert_held(&arvif->ar->conf_mutex);

1386 1387 1388
	if (!info->ibss_joined) {
		ret = ath10k_peer_delete(arvif->ar, arvif->vdev_id, self_peer);
		if (ret)
1389
			ath10k_warn(ar, "failed to delete IBSS self peer %pM for vdev %d: %d\n",
1390 1391
				    self_peer, arvif->vdev_id, ret);

1392
		if (is_zero_ether_addr(arvif->bssid))
1393 1394
			return;

1395
		memset(arvif->bssid, 0, ETH_ALEN);
1396 1397 1398 1399

		return;
	}

1400 1401
	ret = ath10k_peer_create(arvif->ar, arvif->vdev_id, self_peer,
				 WMI_PEER_TYPE_DEFAULT);
1402
	if (ret) {
1403
		ath10k_warn(ar, "failed to create IBSS self peer %pM for vdev %d: %d\n",
1404 1405 1406 1407
			    self_peer, arvif->vdev_id, ret);
		return;
	}

1408 1409
	vdev_param = arvif->ar->wmi.vdev_param->atim_window;
	ret = ath10k_wmi_vdev_set_param(arvif->ar, arvif->vdev_id, vdev_param,
1410 1411
					ATH10K_DEFAULT_ATIM);
	if (ret)
1412
		ath10k_warn(ar, "failed to set IBSS ATIM for vdev %d: %d\n",
1413 1414 1415
			    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;
}

1467 1468 1469 1470 1471 1472 1473 1474 1475 1476 1477 1478 1479 1480
static int ath10k_mac_ps_vif_count(struct ath10k *ar)
{
	struct ath10k_vif *arvif;
	int num = 0;

	lockdep_assert_held(&ar->conf_mutex);

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

	return num;
}

1481
static int ath10k_mac_vif_setup_ps(struct ath10k_vif *arvif)
1482
{
1483
	struct ath10k *ar = arvif->ar;
1484
	struct ieee80211_vif *vif = arvif->vif;
1485
	struct ieee80211_conf *conf = &ar->hw->conf;
1486 1487 1488
	enum wmi_sta_powersave_param param;
	enum wmi_sta_ps_mode psmode;
	int ret;
1489
	int ps_timeout;
1490
	bool enable_ps;
1491

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

1494 1495
	if (arvif->vif->type != NL80211_IFTYPE_STATION)
		return 0;
1496

1497 1498 1499 1500 1501 1502 1503 1504 1505 1506 1507
	enable_ps = arvif->ps;

	if (enable_ps && ath10k_mac_ps_vif_count(ar) > 1 &&
	    !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;
	}

	if (enable_ps) {
1508 1509 1510
		psmode = WMI_STA_PS_MODE_ENABLED;
		param = WMI_STA_PS_PARAM_INACTIVITY_TIME;

1511 1512 1513 1514 1515 1516 1517
		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;
		}

1518
		ret = ath10k_wmi_set_sta_ps_param(ar, arvif->vdev_id, param,
1519
						  ps_timeout);
1520
		if (ret) {
1521
			ath10k_warn(ar, "failed to set inactivity time for vdev %d: %i\n",
1522
				    arvif->vdev_id, ret);
1523
			return ret;
1524 1525 1526 1527 1528
		}
	} else {
		psmode = WMI_STA_PS_MODE_DISABLED;
	}

1529
	ath10k_dbg(ar, ATH10K_DBG_MAC, "mac vdev %d psmode %s\n",
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Kalle Valo 已提交
1530 1531
		   arvif->vdev_id, psmode ? "enable" : "disable");

1532 1533
	ret = ath10k_wmi_set_psmode(ar, arvif->vdev_id, psmode);
	if (ret) {
1534
		ath10k_warn(ar, "failed to set PS Mode %d for vdev %d: %d\n",
1535
			    psmode, arvif->vdev_id, ret);
1536 1537 1538 1539
		return ret;
	}

	return 0;
1540 1541
}

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

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

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

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

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

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

	return 0;
}

1574 1575 1576 1577 1578 1579
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;

1580 1581 1582 1583 1584
	lockdep_assert_held(&arvif->ar->conf_mutex);

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

1585 1586 1587 1588 1589 1590 1591 1592 1593 1594 1595 1596 1597 1598 1599 1600 1601 1602 1603 1604 1605 1606 1607 1608 1609 1610 1611 1612 1613 1614 1615 1616 1617 1618 1619 1620 1621
	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);
}

1622 1623 1624 1625 1626 1627 1628 1629 1630 1631 1632 1633 1634 1635 1636 1637 1638 1639 1640 1641 1642 1643 1644 1645 1646 1647 1648 1649 1650 1651 1652 1653 1654 1655 1656 1657 1658 1659 1660 1661 1662 1663 1664 1665 1666 1667 1668 1669 1670 1671 1672 1673 1674 1675 1676 1677 1678 1679 1680 1681 1682 1683 1684 1685 1686 1687 1688 1689 1690
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);
}

1691 1692 1693 1694
/**********************/
/* Station management */
/**********************/

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1695 1696 1697 1698 1699 1700 1701 1702 1703 1704 1705 1706 1707 1708 1709 1710 1711
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;
}

1712
static void ath10k_peer_assoc_h_basic(struct ath10k *ar,
M
Michal Kazior 已提交
1713
				      struct ieee80211_vif *vif,
1714 1715 1716
				      struct ieee80211_sta *sta,
				      struct wmi_peer_assoc_complete_arg *arg)
{
M
Michal Kazior 已提交
1717 1718
	struct ath10k_vif *arvif = ath10k_vif_to_arvif(vif);

M
Michal Kazior 已提交
1719 1720
	lockdep_assert_held(&ar->conf_mutex);

K
Kalle Valo 已提交
1721
	ether_addr_copy(arg->addr, sta->addr);
1722 1723 1724
	arg->vdev_id = arvif->vdev_id;
	arg->peer_aid = sta->aid;
	arg->peer_flags |= WMI_PEER_AUTH;
M
Michal Kazior 已提交
1725
	arg->peer_listen_intval = ath10k_peer_assoc_h_listen_intval(ar, vif);
1726
	arg->peer_num_spatial_streams = 1;
M
Michal Kazior 已提交
1727
	arg->peer_caps = vif->bss_conf.assoc_capability;
1728 1729 1730
}

static void ath10k_peer_assoc_h_crypto(struct ath10k *ar,
M
Michal Kazior 已提交
1731
				       struct ieee80211_vif *vif,
1732 1733 1734 1735 1736 1737 1738
				       struct wmi_peer_assoc_complete_arg *arg)
{
	struct ieee80211_bss_conf *info = &vif->bss_conf;
	struct cfg80211_bss *bss;
	const u8 *rsnie = NULL;
	const u8 *wpaie = NULL;

M
Michal Kazior 已提交
1739 1740
	lockdep_assert_held(&ar->conf_mutex);

1741
	bss = cfg80211_get_bss(ar->hw->wiphy, ar->hw->conf.chandef.chan,
1742 1743
			       info->bssid, NULL, 0, IEEE80211_BSS_TYPE_ANY,
			       IEEE80211_PRIVACY_ANY);
1744 1745 1746 1747 1748 1749 1750 1751 1752
	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,
1753 1754 1755
						WLAN_OUI_TYPE_MICROSOFT_WPA,
						ies->data,
						ies->len);
1756 1757 1758 1759 1760 1761
		rcu_read_unlock();
		cfg80211_put_bss(ar->hw->wiphy, bss);
	}

	/* FIXME: base on RSN IE/WPA IE is a correct idea? */
	if (rsnie || wpaie) {
1762
		ath10k_dbg(ar, ATH10K_DBG_WMI, "%s: rsn ie found\n", __func__);
1763 1764 1765 1766
		arg->peer_flags |= WMI_PEER_NEED_PTK_4_WAY;
	}

	if (wpaie) {
1767
		ath10k_dbg(ar, ATH10K_DBG_WMI, "%s: wpa ie found\n", __func__);
1768 1769 1770 1771 1772 1773 1774 1775 1776 1777 1778 1779
		arg->peer_flags |= WMI_PEER_NEED_GTK_2_WAY;
	}
}

static void ath10k_peer_assoc_h_rates(struct ath10k *ar,
				      struct ieee80211_sta *sta,
				      struct wmi_peer_assoc_complete_arg *arg)
{
	struct wmi_rate_set_arg *rateset = &arg->peer_legacy_rates;
	const struct ieee80211_supported_band *sband;
	const struct ieee80211_rate *rates;
	u32 ratemask;
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	u8 rate;
1781 1782
	int i;

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	lockdep_assert_held(&ar->conf_mutex);

1785 1786 1787 1788 1789 1790 1791 1792 1793 1794
	sband = ar->hw->wiphy->bands[ar->hw->conf.chandef.chan->band];
	ratemask = sta->supp_rates[ar->hw->conf.chandef.chan->band];
	rates = sband->bitrates;

	rateset->num_rates = 0;

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

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		rate = ath10k_mac_bitrate_to_rate(rates->bitrate);
		rateset->rates[rateset->num_rates] = rate;
1797 1798 1799 1800 1801 1802 1803 1804 1805 1806
		rateset->num_rates++;
	}
}

static void ath10k_peer_assoc_h_ht(struct ath10k *ar,
				   struct ieee80211_sta *sta,
				   struct wmi_peer_assoc_complete_arg *arg)
{
	const struct ieee80211_sta_ht_cap *ht_cap = &sta->ht_cap;
	int i, n;
1807
	u32 stbc;
1808

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1809 1810
	lockdep_assert_held(&ar->conf_mutex);

1811 1812 1813 1814 1815 1816 1817 1818 1819 1820 1821 1822 1823 1824 1825 1826 1827 1828 1829 1830 1831 1832 1833 1834 1835 1836 1837 1838 1839 1840 1841 1842 1843 1844 1845 1846 1847 1848 1849 1850 1851 1852 1853 1854 1855 1856 1857 1858 1859
	if (!ht_cap->ht_supported)
		return;

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

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

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

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

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

	if (ht_cap->cap & IEEE80211_HT_CAP_SGI_20)
		arg->peer_rate_caps |= WMI_RC_SGI_FLAG;

	if (ht_cap->cap & IEEE80211_HT_CAP_SGI_40)
		arg->peer_rate_caps |= WMI_RC_SGI_FLAG;

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

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

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

	for (i = 0, n = 0; i < IEEE80211_HT_MCS_MASK_LEN*8; i++)
		if (ht_cap->mcs.rx_mask[i/8] & (1 << i%8))
			arg->peer_ht_rates.rates[n++] = i;

1860 1861 1862 1863 1864 1865 1866 1867 1868 1869 1870 1871 1872 1873 1874 1875 1876
	/*
	 * 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;
		arg->peer_num_spatial_streams = sta->rx_nss;
	}
1877

1878
	ath10k_dbg(ar, ATH10K_DBG_MAC, "mac ht peer %pM mcs cnt %d nss %d\n",
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		   arg->addr,
1880 1881 1882 1883
		   arg->peer_ht_rates.num_rates,
		   arg->peer_num_spatial_streams);
}

1884 1885 1886
static int ath10k_peer_assoc_qos_ap(struct ath10k *ar,
				    struct ath10k_vif *arvif,
				    struct ieee80211_sta *sta)
1887 1888 1889
{
	u32 uapsd = 0;
	u32 max_sp = 0;
1890
	int ret = 0;
1891

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1892 1893
	lockdep_assert_held(&ar->conf_mutex);

1894
	if (sta->wme && sta->uapsd_queues) {
1895
		ath10k_dbg(ar, ATH10K_DBG_MAC, "mac uapsd_queues 0x%x max_sp %d\n",
1896 1897 1898 1899 1900 1901 1902 1903 1904 1905 1906 1907 1908 1909 1910 1911 1912 1913
			   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;

1914 1915 1916 1917 1918
		ret = ath10k_wmi_set_ap_ps_param(ar, arvif->vdev_id,
						 sta->addr,
						 WMI_AP_PS_PEER_PARAM_UAPSD,
						 uapsd);
		if (ret) {
1919
			ath10k_warn(ar, "failed to set ap ps peer param uapsd for vdev %i: %d\n",
1920
				    arvif->vdev_id, ret);
1921 1922
			return ret;
		}
1923

1924 1925 1926 1927 1928
		ret = ath10k_wmi_set_ap_ps_param(ar, arvif->vdev_id,
						 sta->addr,
						 WMI_AP_PS_PEER_PARAM_MAX_SP,
						 max_sp);
		if (ret) {
1929
			ath10k_warn(ar, "failed to set ap ps peer param max sp for vdev %i: %d\n",
1930
				    arvif->vdev_id, ret);
1931 1932
			return ret;
		}
1933 1934 1935 1936 1937

		/* 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 */
1938
		ret = ath10k_wmi_set_ap_ps_param(ar, arvif->vdev_id, sta->addr,
1939 1940
						 WMI_AP_PS_PEER_PARAM_AGEOUT_TIME,
						 10);
1941
		if (ret) {
1942
			ath10k_warn(ar, "failed to set ap ps peer param ageout time for vdev %i: %d\n",
1943
				    arvif->vdev_id, ret);
1944 1945
			return ret;
		}
1946 1947
	}

1948
	return 0;
1949 1950 1951 1952 1953 1954 1955
}

static void ath10k_peer_assoc_h_vht(struct ath10k *ar,
				    struct ieee80211_sta *sta,
				    struct wmi_peer_assoc_complete_arg *arg)
{
	const struct ieee80211_sta_vht_cap *vht_cap = &sta->vht_cap;
1956
	u8 ampdu_factor;
1957 1958 1959 1960 1961

	if (!vht_cap->vht_supported)
		return;

	arg->peer_flags |= WMI_PEER_VHT;
1962 1963 1964 1965

	if (ar->hw->conf.chandef.chan->band == IEEE80211_BAND_2GHZ)
		arg->peer_flags |= WMI_PEER_VHT_2G;

1966 1967
	arg->peer_vht_caps = vht_cap->cap;

1968 1969 1970 1971 1972 1973 1974 1975 1976 1977 1978 1979
	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);

1980 1981 1982 1983 1984 1985 1986 1987 1988 1989 1990 1991
	if (sta->bandwidth == IEEE80211_STA_RX_BW_80)
		arg->peer_flags |= WMI_PEER_80MHZ;

	arg->peer_vht_rates.rx_max_rate =
		__le16_to_cpu(vht_cap->vht_mcs.rx_highest);
	arg->peer_vht_rates.rx_mcs_set =
		__le16_to_cpu(vht_cap->vht_mcs.rx_mcs_map);
	arg->peer_vht_rates.tx_max_rate =
		__le16_to_cpu(vht_cap->vht_mcs.tx_highest);
	arg->peer_vht_rates.tx_mcs_set =
		__le16_to_cpu(vht_cap->vht_mcs.tx_mcs_map);

1992
	ath10k_dbg(ar, ATH10K_DBG_MAC, "mac vht peer %pM max_mpdu %d flags 0x%x\n",
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		   sta->addr, arg->peer_max_mpdu, arg->peer_flags);
1994 1995 1996
}

static void ath10k_peer_assoc_h_qos(struct ath10k *ar,
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				    struct ieee80211_vif *vif,
1998 1999 2000
				    struct ieee80211_sta *sta,
				    struct wmi_peer_assoc_complete_arg *arg)
{
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	struct ath10k_vif *arvif = ath10k_vif_to_arvif(vif);

2003 2004
	switch (arvif->vdev_type) {
	case WMI_VDEV_TYPE_AP:
2005 2006 2007 2008 2009 2010 2011
		if (sta->wme)
			arg->peer_flags |= WMI_PEER_QOS;

		if (sta->wme && sta->uapsd_queues) {
			arg->peer_flags |= WMI_PEER_APSD;
			arg->peer_rate_caps |= WMI_RC_UAPSD_FLAG;
		}
2012 2013
		break;
	case WMI_VDEV_TYPE_STA:
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		if (vif->bss_conf.qos)
2015
			arg->peer_flags |= WMI_PEER_QOS;
2016
		break;
2017 2018 2019 2020
	case WMI_VDEV_TYPE_IBSS:
		if (sta->wme)
			arg->peer_flags |= WMI_PEER_QOS;
		break;
2021 2022 2023
	default:
		break;
	}
2024 2025 2026

	ath10k_dbg(ar, ATH10K_DBG_MAC, "mac peer %pM qos %d\n",
		   sta->addr, !!(arg->peer_flags & WMI_PEER_QOS));
2027 2028
}

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static bool ath10k_mac_sta_has_11g_rates(struct ieee80211_sta *sta)
{
	/* First 4 rates in ath10k_rates are CCK (11b) rates. */
	return sta->supp_rates[IEEE80211_BAND_2GHZ] >> 4;
}

2035
static void ath10k_peer_assoc_h_phymode(struct ath10k *ar,
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					struct ieee80211_vif *vif,
2037 2038 2039 2040 2041 2042 2043
					struct ieee80211_sta *sta,
					struct wmi_peer_assoc_complete_arg *arg)
{
	enum wmi_phy_mode phymode = MODE_UNKNOWN;

	switch (ar->hw->conf.chandef.chan->band) {
	case IEEE80211_BAND_2GHZ:
2044 2045 2046 2047 2048 2049
		if (sta->vht_cap.vht_supported) {
			if (sta->bandwidth == IEEE80211_STA_RX_BW_40)
				phymode = MODE_11AC_VHT40;
			else
				phymode = MODE_11AC_VHT20;
		} else if (sta->ht_cap.ht_supported) {
2050 2051 2052 2053
			if (sta->bandwidth == IEEE80211_STA_RX_BW_40)
				phymode = MODE_11NG_HT40;
			else
				phymode = MODE_11NG_HT20;
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		} else if (ath10k_mac_sta_has_11g_rates(sta)) {
2055
			phymode = MODE_11G;
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2056 2057
		} else {
			phymode = MODE_11B;
2058 2059 2060 2061
		}

		break;
	case IEEE80211_BAND_5GHZ:
2062 2063 2064 2065 2066 2067 2068 2069 2070 2071 2072
		/*
		 * Check VHT first.
		 */
		if (sta->vht_cap.vht_supported) {
			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;
		} else if (sta->ht_cap.ht_supported) {
2073 2074 2075 2076 2077 2078 2079 2080 2081 2082 2083 2084 2085
			if (sta->bandwidth == IEEE80211_STA_RX_BW_40)
				phymode = MODE_11NA_HT40;
			else
				phymode = MODE_11NA_HT20;
		} else {
			phymode = MODE_11A;
		}

		break;
	default:
		break;
	}

2086
	ath10k_dbg(ar, ATH10K_DBG_MAC, "mac peer %pM phymode %s\n",
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		   sta->addr, ath10k_wmi_phymode_str(phymode));
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2089 2090 2091 2092
	arg->peer_phymode = phymode;
	WARN_ON(phymode == MODE_UNKNOWN);
}

2093
static int ath10k_peer_assoc_prepare(struct ath10k *ar,
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2094
				     struct ieee80211_vif *vif,
2095 2096
				     struct ieee80211_sta *sta,
				     struct wmi_peer_assoc_complete_arg *arg)
2097
{
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2098 2099
	lockdep_assert_held(&ar->conf_mutex);

2100
	memset(arg, 0, sizeof(*arg));
2101

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2102 2103
	ath10k_peer_assoc_h_basic(ar, vif, sta, arg);
	ath10k_peer_assoc_h_crypto(ar, vif, arg);
2104 2105 2106
	ath10k_peer_assoc_h_rates(ar, sta, arg);
	ath10k_peer_assoc_h_ht(ar, sta, arg);
	ath10k_peer_assoc_h_vht(ar, sta, arg);
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2107 2108
	ath10k_peer_assoc_h_qos(ar, vif, sta, arg);
	ath10k_peer_assoc_h_phymode(ar, vif, sta, arg);
2109

2110
	return 0;
2111 2112
}

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2113 2114 2115 2116 2117 2118 2119 2120 2121 2122 2123 2124 2125 2126 2127 2128 2129 2130 2131 2132 2133 2134 2135 2136 2137 2138 2139
static const u32 ath10k_smps_map[] = {
	[WLAN_HT_CAP_SM_PS_STATIC] = WMI_PEER_SMPS_STATIC,
	[WLAN_HT_CAP_SM_PS_DYNAMIC] = WMI_PEER_SMPS_DYNAMIC,
	[WLAN_HT_CAP_SM_PS_INVALID] = WMI_PEER_SMPS_PS_NONE,
	[WLAN_HT_CAP_SM_PS_DISABLED] = WMI_PEER_SMPS_PS_NONE,
};

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

	if (!ht_cap->ht_supported)
		return 0;

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

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

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

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

	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;
}

2202 2203 2204 2205 2206 2207 2208
/* can be called only in mac80211 callbacks due to `key_count` usage */
static void ath10k_bss_assoc(struct ieee80211_hw *hw,
			     struct ieee80211_vif *vif,
			     struct ieee80211_bss_conf *bss_conf)
{
	struct ath10k *ar = hw->priv;
	struct ath10k_vif *arvif = ath10k_vif_to_arvif(vif);
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	struct ieee80211_sta_ht_cap ht_cap;
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	struct ieee80211_sta_vht_cap vht_cap;
2211
	struct wmi_peer_assoc_complete_arg peer_arg;
2212 2213 2214
	struct ieee80211_sta *ap_sta;
	int ret;

M
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2215 2216
	lockdep_assert_held(&ar->conf_mutex);

2217 2218 2219
	ath10k_dbg(ar, ATH10K_DBG_MAC, "mac vdev %i assoc bssid %pM aid %d\n",
		   arvif->vdev_id, arvif->bssid, arvif->aid);

2220 2221 2222 2223
	rcu_read_lock();

	ap_sta = ieee80211_find_sta(vif, bss_conf->bssid);
	if (!ap_sta) {
2224
		ath10k_warn(ar, "failed to find station entry for bss %pM vdev %i\n",
2225
			    bss_conf->bssid, arvif->vdev_id);
2226 2227 2228 2229
		rcu_read_unlock();
		return;
	}

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2230 2231 2232
	/* ap_sta must be accessed only within rcu section which must be left
	 * before calling ath10k_setup_peer_smps() which might sleep. */
	ht_cap = ap_sta->ht_cap;
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	vht_cap = ap_sta->vht_cap;
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2234

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2235
	ret = ath10k_peer_assoc_prepare(ar, vif, ap_sta, &peer_arg);
2236
	if (ret) {
2237
		ath10k_warn(ar, "failed to prepare peer assoc for %pM vdev %i: %d\n",
2238
			    bss_conf->bssid, arvif->vdev_id, ret);
2239 2240 2241 2242 2243 2244
		rcu_read_unlock();
		return;
	}

	rcu_read_unlock();

2245 2246
	ret = ath10k_wmi_peer_assoc(ar, &peer_arg);
	if (ret) {
2247
		ath10k_warn(ar, "failed to run peer assoc for %pM vdev %i: %d\n",
2248
			    bss_conf->bssid, arvif->vdev_id, ret);
2249 2250 2251
		return;
	}

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Michal Kazior 已提交
2252 2253
	ret = ath10k_setup_peer_smps(ar, arvif, bss_conf->bssid, &ht_cap);
	if (ret) {
2254
		ath10k_warn(ar, "failed to setup peer SMPS for vdev %i: %d\n",
2255
			    arvif->vdev_id, ret);
M
Michal Kazior 已提交
2256 2257 2258
		return;
	}

M
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2259 2260 2261 2262 2263 2264 2265
	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;
	}

2266
	ath10k_dbg(ar, ATH10K_DBG_MAC,
K
Kalle Valo 已提交
2267 2268 2269
		   "mac vdev %d up (associated) bssid %pM aid %d\n",
		   arvif->vdev_id, bss_conf->bssid, bss_conf->aid);

2270 2271
	WARN_ON(arvif->is_up);

2272
	arvif->aid = bss_conf->aid;
K
Kalle Valo 已提交
2273
	ether_addr_copy(arvif->bssid, bss_conf->bssid);
2274 2275 2276

	ret = ath10k_wmi_vdev_up(ar, arvif->vdev_id, arvif->aid, arvif->bssid);
	if (ret) {
2277
		ath10k_warn(ar, "failed to set vdev %d up: %d\n",
2278
			    arvif->vdev_id, ret);
2279 2280 2281 2282
		return;
	}

	arvif->is_up = true;
2283 2284 2285 2286 2287 2288 2289 2290 2291 2292 2293 2294

	/* 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;
	}
2295 2296 2297 2298 2299 2300 2301
}

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
2302
	struct ieee80211_sta_vht_cap vht_cap = {};
2303 2304
	int ret;

M
Michal Kazior 已提交
2305 2306
	lockdep_assert_held(&ar->conf_mutex);

2307 2308
	ath10k_dbg(ar, ATH10K_DBG_MAC, "mac vdev %i disassoc bssid %pM\n",
		   arvif->vdev_id, arvif->bssid);
K
Kalle Valo 已提交
2309

2310
	ret = ath10k_wmi_vdev_down(ar, arvif->vdev_id);
2311 2312 2313
	if (ret)
		ath10k_warn(ar, "faield to down vdev %i: %d\n",
			    arvif->vdev_id, ret);
2314

2315 2316
	arvif->def_wep_key_idx = -1;

M
Michal Kazior 已提交
2317 2318 2319 2320 2321 2322 2323
	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;
	}

2324
	arvif->is_up = false;
2325 2326

	cancel_delayed_work_sync(&arvif->connection_loss_work);
2327 2328
}

M
Michal Kazior 已提交
2329 2330 2331 2332
static int ath10k_station_assoc(struct ath10k *ar,
				struct ieee80211_vif *vif,
				struct ieee80211_sta *sta,
				bool reassoc)
2333
{
M
Michal Kazior 已提交
2334
	struct ath10k_vif *arvif = ath10k_vif_to_arvif(vif);
2335
	struct wmi_peer_assoc_complete_arg peer_arg;
2336 2337
	int ret = 0;

M
Michal Kazior 已提交
2338 2339
	lockdep_assert_held(&ar->conf_mutex);

M
Michal Kazior 已提交
2340
	ret = ath10k_peer_assoc_prepare(ar, vif, sta, &peer_arg);
2341
	if (ret) {
2342
		ath10k_warn(ar, "failed to prepare WMI peer assoc for %pM vdev %i: %i\n",
2343
			    sta->addr, arvif->vdev_id, ret);
2344 2345 2346
		return ret;
	}

2347
	peer_arg.peer_reassoc = reassoc;
2348
	ret = ath10k_wmi_peer_assoc(ar, &peer_arg);
2349
	if (ret) {
2350
		ath10k_warn(ar, "failed to run peer assoc for STA %pM vdev %i: %d\n",
2351
			    sta->addr, arvif->vdev_id, ret);
2352 2353 2354
		return ret;
	}

2355 2356 2357 2358 2359 2360
	/* 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);
2361
		if (ret) {
2362
			ath10k_warn(ar, "failed to setup peer SMPS for vdev %d: %d\n",
2363 2364 2365 2366
				    arvif->vdev_id, ret);
			return ret;
		}

2367 2368 2369 2370 2371 2372
		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;
		}
2373

2374 2375 2376 2377 2378 2379 2380 2381 2382 2383
		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;
			}
		}

2384 2385 2386 2387 2388 2389 2390 2391
		/* 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;
			}
2392
		}
2393 2394
	}

2395 2396 2397
	return ret;
}

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Michal Kazior 已提交
2398 2399
static int ath10k_station_disassoc(struct ath10k *ar,
				   struct ieee80211_vif *vif,
2400 2401
				   struct ieee80211_sta *sta)
{
M
Michal Kazior 已提交
2402
	struct ath10k_vif *arvif = ath10k_vif_to_arvif(vif);
2403 2404
	int ret = 0;

M
Michal Kazior 已提交
2405 2406
	lockdep_assert_held(&ar->conf_mutex);

2407 2408 2409 2410
	if (!sta->wme) {
		arvif->num_legacy_stations--;
		ret = ath10k_recalc_rtscts_prot(arvif);
		if (ret) {
2411
			ath10k_warn(ar, "failed to recalculate rts/cts prot for vdev %d: %d\n",
2412 2413 2414 2415 2416
				    arvif->vdev_id, ret);
			return ret;
		}
	}

2417 2418
	ret = ath10k_clear_peer_keys(arvif, sta->addr);
	if (ret) {
2419
		ath10k_warn(ar, "failed to clear all peer wep keys for vdev %i: %d\n",
2420
			    arvif->vdev_id, ret);
2421 2422 2423 2424 2425 2426 2427 2428 2429 2430 2431 2432 2433 2434 2435 2436 2437 2438 2439 2440 2441 2442 2443
		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
2444 2445
	lockdep_assert_held(&ar->conf_mutex);

2446 2447 2448 2449 2450 2451 2452 2453 2454 2455 2456 2457 2458 2459 2460 2461 2462 2463 2464 2465 2466 2467 2468 2469 2470 2471 2472 2473 2474 2475 2476 2477 2478 2479 2480 2481
	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 =
2482
				!(channel->flags & IEEE80211_CHAN_NO_IR);
2483 2484 2485 2486

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

2487 2488 2489
			ch->chan_radar =
				!!(channel->flags & IEEE80211_CHAN_RADAR);

2490
			passive = channel->flags & IEEE80211_CHAN_NO_IR;
2491 2492 2493
			ch->passive = passive;

			ch->freq = channel->center_freq;
2494
			ch->band_center_freq1 = channel->center_freq;
2495
			ch->min_power = 0;
M
Michal Kazior 已提交
2496 2497 2498
			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;
2499 2500 2501 2502 2503 2504 2505 2506 2507 2508 2509 2510 2511
			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;

2512
			ath10k_dbg(ar, ATH10K_DBG_WMI,
K
Kalle Valo 已提交
2513 2514
				   "mac channel [%zd/%d] freq %d maxpower %d regpower %d antenna %d mode %d\n",
				    ch - arg.channels, arg.n_channels,
2515 2516 2517 2518 2519 2520 2521 2522 2523 2524 2525 2526 2527
				   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;
}

2528 2529 2530 2531 2532 2533 2534 2535 2536 2537 2538 2539 2540 2541 2542 2543
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;
}

2544
static void ath10k_regd_update(struct ath10k *ar)
2545 2546 2547
{
	struct reg_dmn_pair_mapping *regpair;
	int ret;
2548 2549
	enum wmi_dfs_region wmi_dfs_reg;
	enum nl80211_dfs_regions nl_dfs_reg;
2550

2551
	lockdep_assert_held(&ar->conf_mutex);
2552 2553 2554

	ret = ath10k_update_channel_list(ar);
	if (ret)
2555
		ath10k_warn(ar, "failed to update channel list: %d\n", ret);
2556 2557

	regpair = ar->ath_common.regulatory.regpair;
2558

2559 2560 2561 2562 2563 2564 2565
	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;
	}

2566 2567 2568
	/* Target allows setting up per-band regdomain but ath_common provides
	 * a combined one only */
	ret = ath10k_wmi_pdev_set_regdomain(ar,
2569 2570 2571
					    regpair->reg_domain,
					    regpair->reg_domain, /* 2ghz */
					    regpair->reg_domain, /* 5ghz */
2572
					    regpair->reg_2ghz_ctl,
2573 2574
					    regpair->reg_5ghz_ctl,
					    wmi_dfs_reg);
2575
	if (ret)
2576
		ath10k_warn(ar, "failed to set pdev regdomain: %d\n", ret);
2577
}
M
Michal Kazior 已提交
2578

2579 2580 2581 2582 2583
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
2584
	bool result;
2585 2586 2587

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

J
Janusz Dziedzic 已提交
2588
	if (config_enabled(CONFIG_ATH10K_DFS_CERTIFIED) && ar->dfs_detector) {
2589
		ath10k_dbg(ar, ATH10K_DBG_REGULATORY, "dfs region 0x%x\n",
J
Janusz Dziedzic 已提交
2590 2591 2592 2593
			   request->dfs_region);
		result = ar->dfs_detector->set_dfs_domain(ar->dfs_detector,
							  request->dfs_region);
		if (!result)
2594
			ath10k_warn(ar, "DFS region 0x%X not supported, will trigger radar for every pulse\n",
J
Janusz Dziedzic 已提交
2595 2596 2597
				    request->dfs_region);
	}

2598 2599 2600
	mutex_lock(&ar->conf_mutex);
	if (ar->state == ATH10K_STATE_ON)
		ath10k_regd_update(ar);
M
Michal Kazior 已提交
2601
	mutex_unlock(&ar->conf_mutex);
2602 2603 2604 2605 2606 2607
}

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

2608 2609 2610 2611 2612 2613 2614 2615 2616 2617 2618 2619 2620 2621
static u8 ath10k_tx_h_get_tid(struct ieee80211_hdr *hdr)
{
	if (ieee80211_is_mgmt(hdr->frame_control))
		return HTT_DATA_TX_EXT_TID_MGMT;

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

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

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

2622
static u8 ath10k_tx_h_get_vdev_id(struct ath10k *ar, struct ieee80211_vif *vif)
2623
{
2624 2625
	if (vif)
		return ath10k_vif_to_arvif(vif)->vdev_id;
2626

M
Michal Kazior 已提交
2627
	if (ar->monitor_started)
2628 2629
		return ar->monitor_vdev_id;

2630
	ath10k_warn(ar, "failed to resolve vdev id\n");
2631 2632 2633
	return 0;
}

2634 2635
static enum ath10k_hw_txrx_mode
ath10k_tx_h_get_txmode(struct ath10k *ar, struct ieee80211_vif *vif,
2636
		       struct ieee80211_sta *sta, struct sk_buff *skb)
2637 2638 2639 2640 2641 2642 2643 2644 2645 2646 2647 2648 2649 2650 2651 2652 2653 2654 2655 2656 2657 2658 2659 2660 2661 2662 2663 2664 2665 2666 2667
{
	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;

2668 2669 2670 2671 2672 2673 2674 2675 2676
	/* 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.
	 */
	if (ieee80211_is_data_present(fc) && sta && sta->tdls)
		return ATH10K_HW_TXRX_ETHERNET;

2677 2678 2679
	return ATH10K_HW_TXRX_NATIVE_WIFI;
}

M
Michal Kazior 已提交
2680 2681
/* HTT Tx uses Native Wifi tx mode which expects 802.11 frames without QoS
 * Control in the header.
2682
 */
M
Michal Kazior 已提交
2683
static void ath10k_tx_h_nwifi(struct ieee80211_hw *hw, struct sk_buff *skb)
2684 2685
{
	struct ieee80211_hdr *hdr = (void *)skb->data;
2686
	struct ath10k_skb_cb *cb = ATH10K_SKB_CB(skb);
2687 2688 2689 2690 2691 2692
	u8 *qos_ctl;

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

	qos_ctl = ieee80211_get_qos_ctl(hdr);
2693 2694 2695
	memmove(skb->data + IEEE80211_QOS_CTL_LEN,
		skb->data, (void *)qos_ctl - (void *)skb->data);
	skb_pull(skb, IEEE80211_QOS_CTL_LEN);
2696

2697 2698 2699
	/* 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.
2700
	 */
M
Michal Kazior 已提交
2701
	hdr = (void *)skb->data;
2702
	if (ieee80211_is_qos_nullfunc(hdr->frame_control))
2703
		cb->htt.tid = HTT_DATA_TX_EXT_TID_NON_QOS_MCAST_BCAST;
2704 2705

	hdr->frame_control &= ~__cpu_to_le16(IEEE80211_STYPE_QOS_DATA);
2706 2707
}

2708 2709 2710 2711 2712 2713 2714 2715 2716 2717 2718 2719 2720 2721 2722 2723 2724 2725 2726 2727 2728 2729 2730 2731 2732 2733 2734
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;
}

M
Michal Kazior 已提交
2735 2736 2737
static void ath10k_tx_h_add_p2p_noa_ie(struct ath10k *ar,
				       struct ieee80211_vif *vif,
				       struct sk_buff *skb)
2738 2739 2740 2741 2742 2743 2744 2745 2746 2747 2748 2749 2750 2751 2752 2753 2754 2755 2756 2757 2758
{
	struct ieee80211_hdr *hdr = (struct ieee80211_hdr *)skb->data;
	struct ath10k_vif *arvif = ath10k_vif_to_arvif(vif);

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

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

M
Michal Kazior 已提交
2759 2760 2761 2762 2763 2764 2765 2766 2767 2768 2769 2770
static bool ath10k_mac_need_offchan_tx_work(struct ath10k *ar)
{
	/* FIXME: Not really sure since when the behaviour changed. At some
	 * point new firmware stopped requiring creation of peer entries for
	 * offchannel tx (and actually creating them causes issues with wmi-htc
	 * tx credit replenishment and reliability). Assuming it's at least 3.4
	 * because that's when the `freq` was introduced to TX_FRM HTT command.
	 */
	return !(ar->htt.target_version_major >= 3 &&
		 ar->htt.target_version_minor >= 4);
}

2771
static int ath10k_mac_tx_wmi_mgmt(struct ath10k *ar, struct sk_buff *skb)
2772
{
2773
	struct sk_buff_head *q = &ar->wmi_mgmt_tx_queue;
2774
	int ret = 0;
2775

2776 2777 2778 2779 2780 2781
	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
2782 2783
	}

2784 2785
	__skb_queue_tail(q, skb);
	ieee80211_queue_work(ar->hw, &ar->wmi_mgmt_tx_work);
2786

2787 2788 2789 2790 2791 2792 2793 2794 2795 2796 2797 2798 2799 2800 2801 2802 2803 2804 2805 2806 2807 2808 2809 2810 2811 2812 2813
unlock:
	spin_unlock_bh(&ar->data_lock);

	return ret;
}

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

	switch (cb->txmode) {
	case ATH10K_HW_TXRX_RAW:
	case ATH10K_HW_TXRX_NATIVE_WIFI:
	case ATH10K_HW_TXRX_ETHERNET:
		ret = ath10k_htt_tx(htt, skb);
		break;
	case ATH10K_HW_TXRX_MGMT:
		if (test_bit(ATH10K_FW_FEATURE_HAS_WMI_MGMT_TX,
			     ar->fw_features))
			ret = ath10k_mac_tx_wmi_mgmt(ar, skb);
		else if (ar->htt.target_version_major >= 3)
			ret = ath10k_htt_tx(htt, skb);
		else
			ret = ath10k_htt_mgmt_tx(htt, skb);
		break;
2814
	}
2815 2816

	if (ret) {
2817 2818
		ath10k_warn(ar, "failed to transmit packet, dropping: %d\n",
			    ret);
2819 2820 2821 2822 2823 2824 2825 2826 2827 2828 2829 2830 2831 2832 2833 2834 2835 2836 2837 2838 2839 2840 2841 2842 2843 2844 2845 2846 2847 2848 2849 2850 2851 2852 2853 2854 2855 2856 2857 2858 2859
		ieee80211_free_txskb(ar->hw, skb);
	}
}

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

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

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

void ath10k_offchan_tx_work(struct work_struct *work)
{
	struct ath10k *ar = container_of(work, struct ath10k, offchan_tx_work);
	struct ath10k_peer *peer;
	struct ieee80211_hdr *hdr;
	struct sk_buff *skb;
	const u8 *peer_addr;
	int vdev_id;
	int ret;

	/* 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);

2860
		ath10k_dbg(ar, ATH10K_DBG_MAC, "mac offchannel skb %p\n",
2861 2862 2863 2864
			   skb);

		hdr = (struct ieee80211_hdr *)skb->data;
		peer_addr = ieee80211_get_DA(hdr);
2865
		vdev_id = ATH10K_SKB_CB(skb)->vdev_id;
2866 2867 2868 2869 2870 2871

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

		if (peer)
K
Kalle Valo 已提交
2872
			/* FIXME: should this use ath10k_warn()? */
2873
			ath10k_dbg(ar, ATH10K_DBG_MAC, "peer %pM on vdev %d already present\n",
2874 2875 2876
				   peer_addr, vdev_id);

		if (!peer) {
2877 2878
			ret = ath10k_peer_create(ar, vdev_id, peer_addr,
						 WMI_PEER_TYPE_DEFAULT);
2879
			if (ret)
2880
				ath10k_warn(ar, "failed to create peer %pM on vdev %d: %d\n",
2881 2882 2883 2884
					    peer_addr, vdev_id, ret);
		}

		spin_lock_bh(&ar->data_lock);
2885
		reinit_completion(&ar->offchan_tx_completed);
2886 2887 2888
		ar->offchan_tx_skb = skb;
		spin_unlock_bh(&ar->data_lock);

2889
		ath10k_mac_tx(ar, skb);
2890 2891 2892

		ret = wait_for_completion_timeout(&ar->offchan_tx_completed,
						  3 * HZ);
2893
		if (ret == 0)
2894
			ath10k_warn(ar, "timed out waiting for offchannel skb %p\n",
2895 2896 2897 2898 2899
				    skb);

		if (!peer) {
			ret = ath10k_peer_delete(ar, vdev_id, peer_addr);
			if (ret)
2900
				ath10k_warn(ar, "failed to delete peer %pM on vdev %d: %d\n",
2901 2902 2903 2904 2905 2906 2907
					    peer_addr, vdev_id, ret);
		}

		mutex_unlock(&ar->conf_mutex);
	}
}

2908 2909 2910 2911 2912 2913 2914 2915 2916 2917 2918 2919 2920 2921 2922 2923 2924 2925 2926 2927 2928 2929 2930 2931 2932
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);
2933
		if (ret) {
2934
			ath10k_warn(ar, "failed to transmit management frame via WMI: %d\n",
2935
				    ret);
2936 2937
			ieee80211_free_txskb(ar->hw, skb);
		}
2938 2939 2940
	}
}

2941 2942 2943 2944
/************/
/* Scanning */
/************/

2945
void __ath10k_scan_finish(struct ath10k *ar)
2946
{
2947
	lockdep_assert_held(&ar->data_lock);
2948

2949 2950 2951 2952 2953 2954
	switch (ar->scan.state) {
	case ATH10K_SCAN_IDLE:
		break;
	case ATH10K_SCAN_RUNNING:
		if (ar->scan.is_roc)
			ieee80211_remain_on_channel_expired(ar->hw);
2955
		/* fall through */
2956 2957
	case ATH10K_SCAN_ABORTING:
		if (!ar->scan.is_roc)
2958 2959 2960 2961 2962 2963 2964 2965 2966 2967 2968
			ieee80211_scan_completed(ar->hw,
						 (ar->scan.state ==
						  ATH10K_SCAN_ABORTING));
		/* fall through */
	case ATH10K_SCAN_STARTING:
		ar->scan.state = ATH10K_SCAN_IDLE;
		ar->scan_channel = NULL;
		ath10k_offchan_tx_purge(ar);
		cancel_delayed_work(&ar->scan.timeout);
		complete_all(&ar->scan.completed);
		break;
2969
	}
2970
}
2971

2972 2973 2974 2975
void ath10k_scan_finish(struct ath10k *ar)
{
	spin_lock_bh(&ar->data_lock);
	__ath10k_scan_finish(ar);
2976 2977 2978
	spin_unlock_bh(&ar->data_lock);
}

2979
static int ath10k_scan_stop(struct ath10k *ar)
2980 2981 2982 2983 2984 2985 2986 2987 2988 2989 2990 2991
{
	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) {
2992
		ath10k_warn(ar, "failed to stop wmi scan: %d\n", ret);
2993
		goto out;
2994 2995 2996
	}

	ret = wait_for_completion_timeout(&ar->scan.completed, 3*HZ);
2997
	if (ret == 0) {
2998
		ath10k_warn(ar, "failed to receive scan abortion completion: timed out\n");
2999 3000 3001 3002
		ret = -ETIMEDOUT;
	} else if (ret > 0) {
		ret = 0;
	}
3003

3004 3005 3006 3007 3008 3009 3010 3011 3012 3013 3014 3015 3016 3017 3018 3019 3020 3021 3022 3023 3024
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);
3025 3026

	spin_lock_bh(&ar->data_lock);
3027 3028 3029 3030 3031 3032 3033 3034 3035

	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:
3036
		ath10k_warn(ar, "refusing scan abortion due to invalid scan state: %s (%d)\n",
3037 3038 3039 3040 3041 3042 3043 3044 3045
			    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)
3046
			ath10k_warn(ar, "failed to abort scan: %d\n", ret);
3047 3048 3049

		spin_lock_bh(&ar->data_lock);
		break;
3050
	}
3051

3052
	spin_unlock_bh(&ar->data_lock);
3053
}
3054

3055 3056 3057 3058 3059 3060 3061 3062
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);
3063 3064 3065 3066 3067 3068 3069 3070 3071 3072 3073 3074 3075 3076 3077
}

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) {
3078 3079
		ret = ath10k_scan_stop(ar);
		if (ret)
3080
			ath10k_warn(ar, "failed to stop scan: %d\n", ret);
3081 3082

		return -ETIMEDOUT;
3083 3084
	}

3085 3086 3087 3088 3089 3090 3091 3092 3093 3094 3095
	/* 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);

3096 3097 3098
	/* 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));
3099 3100 3101 3102 3103 3104 3105 3106 3107 3108 3109
	return 0;
}

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

static void ath10k_tx(struct ieee80211_hw *hw,
		      struct ieee80211_tx_control *control,
		      struct sk_buff *skb)
{
M
Michal Kazior 已提交
3110
	struct ath10k *ar = hw->priv;
3111
	struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
M
Michal Kazior 已提交
3112
	struct ieee80211_vif *vif = info->control.vif;
3113
	struct ieee80211_sta *sta = control->sta;
3114
	struct ieee80211_hdr *hdr = (struct ieee80211_hdr *)skb->data;
3115
	__le16 fc = hdr->frame_control;
3116 3117 3118

	/* We should disable CCK RATE due to P2P */
	if (info->flags & IEEE80211_TX_CTL_NO_CCK_RATE)
3119
		ath10k_dbg(ar, ATH10K_DBG_MAC, "IEEE80211_TX_CTL_NO_CCK_RATE\n");
3120

M
Michal Kazior 已提交
3121
	ATH10K_SKB_CB(skb)->htt.is_offchan = false;
M
Michal Kazior 已提交
3122
	ATH10K_SKB_CB(skb)->htt.freq = 0;
M
Michal Kazior 已提交
3123
	ATH10K_SKB_CB(skb)->htt.tid = ath10k_tx_h_get_tid(hdr);
3124
	ATH10K_SKB_CB(skb)->vdev_id = ath10k_tx_h_get_vdev_id(ar, vif);
3125
	ATH10K_SKB_CB(skb)->txmode = ath10k_tx_h_get_txmode(ar, vif, sta, skb);
3126
	ATH10K_SKB_CB(skb)->is_protected = ieee80211_has_protected(fc);
3127

3128 3129 3130
	switch (ATH10K_SKB_CB(skb)->txmode) {
	case ATH10K_HW_TXRX_MGMT:
	case ATH10K_HW_TXRX_NATIVE_WIFI:
M
Michal Kazior 已提交
3131 3132 3133
		ath10k_tx_h_nwifi(hw, skb);
		ath10k_tx_h_add_p2p_noa_ie(ar, vif, skb);
		ath10k_tx_h_seq_no(vif, skb);
3134 3135 3136 3137 3138 3139 3140 3141 3142 3143 3144
		break;
	case ATH10K_HW_TXRX_ETHERNET:
		ath10k_tx_h_8023(skb);
		break;
	case ATH10K_HW_TXRX_RAW:
		/* FIXME: Packet injection isn't implemented. It should be
		 * doable with firmware 10.2 on qca988x.
		 */
		WARN_ON_ONCE(1);
		ieee80211_free_txskb(hw, skb);
		return;
3145
	}
3146 3147 3148

	if (info->flags & IEEE80211_TX_CTL_TX_OFFCHAN) {
		spin_lock_bh(&ar->data_lock);
M
Michal Kazior 已提交
3149
		ATH10K_SKB_CB(skb)->htt.freq = ar->scan.roc_freq;
3150
		ATH10K_SKB_CB(skb)->vdev_id = ar->scan.vdev_id;
3151 3152
		spin_unlock_bh(&ar->data_lock);

M
Michal Kazior 已提交
3153 3154 3155
		if (ath10k_mac_need_offchan_tx_work(ar)) {
			ATH10K_SKB_CB(skb)->htt.freq = 0;
			ATH10K_SKB_CB(skb)->htt.is_offchan = true;
3156

M
Michal Kazior 已提交
3157 3158 3159 3160 3161 3162 3163
			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;
		}
3164 3165
	}

3166
	ath10k_mac_tx(ar, skb);
3167 3168
}

3169
/* Must not be called with conf_mutex held as workers can use that also. */
M
Michal Kazior 已提交
3170
void ath10k_drain_tx(struct ath10k *ar)
3171 3172 3173 3174 3175 3176 3177 3178 3179 3180 3181
{
	/* 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);
}

3182
void ath10k_halt(struct ath10k *ar)
3183
{
3184 3185
	struct ath10k_vif *arvif;

3186 3187
	lockdep_assert_held(&ar->conf_mutex);

3188 3189 3190 3191 3192
	clear_bit(ATH10K_CAC_RUNNING, &ar->dev_flags);
	ar->filter_flags = 0;
	ar->monitor = false;

	if (ar->monitor_started)
M
Michal Kazior 已提交
3193
		ath10k_monitor_stop(ar);
3194 3195

	ar->monitor_started = false;
M
Michal Kazior 已提交
3196

3197
	ath10k_scan_finish(ar);
3198 3199 3200 3201 3202
	ath10k_peer_cleanup_all(ar);
	ath10k_core_stop(ar);
	ath10k_hif_power_down(ar);

	spin_lock_bh(&ar->data_lock);
3203 3204
	list_for_each_entry(arvif, &ar->arvifs, list)
		ath10k_mac_vif_beacon_cleanup(arvif);
3205 3206 3207
	spin_unlock_bh(&ar->data_lock);
}

3208 3209 3210 3211 3212 3213 3214 3215 3216 3217 3218 3219 3220 3221 3222 3223 3224 3225 3226
static int ath10k_get_antenna(struct ieee80211_hw *hw, u32 *tx_ant, u32 *rx_ant)
{
	struct ath10k *ar = hw->priv;

	mutex_lock(&ar->conf_mutex);

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

	mutex_unlock(&ar->conf_mutex);

	return 0;
}

3227 3228 3229 3230 3231 3232 3233 3234 3235 3236 3237 3238 3239
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);
}

3240 3241 3242 3243 3244 3245
static int __ath10k_set_antenna(struct ath10k *ar, u32 tx_ant, u32 rx_ant)
{
	int ret;

	lockdep_assert_held(&ar->conf_mutex);

3246 3247 3248
	ath10k_check_chain_mask(ar, tx_ant, "tx");
	ath10k_check_chain_mask(ar, rx_ant, "rx");

3249 3250 3251 3252 3253 3254 3255 3256 3257 3258
	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) {
3259
		ath10k_warn(ar, "failed to set tx-chainmask: %d, req 0x%x\n",
3260 3261 3262 3263 3264 3265 3266
			    ret, tx_ant);
		return ret;
	}

	ret = ath10k_wmi_pdev_set_param(ar, ar->wmi.pdev_param->rx_chain_mask,
					rx_ant);
	if (ret) {
3267
		ath10k_warn(ar, "failed to set rx-chainmask: %d, req 0x%x\n",
3268 3269 3270 3271 3272 3273 3274 3275 3276 3277 3278 3279 3280 3281 3282 3283 3284 3285
			    ret, rx_ant);
		return ret;
	}

	return 0;
}

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

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

3286 3287 3288
static int ath10k_start(struct ieee80211_hw *hw)
{
	struct ath10k *ar = hw->priv;
3289
	int ret = 0;
3290

3291 3292 3293 3294 3295 3296 3297
	/*
	 * 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
3298 3299
	mutex_lock(&ar->conf_mutex);

3300 3301 3302 3303 3304 3305 3306 3307 3308 3309 3310 3311
	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);
3312
		ret = -EINVAL;
3313
		goto err;
K
Kalle Valo 已提交
3314 3315 3316
	case ATH10K_STATE_UTF:
		ret = -EBUSY;
		goto err;
3317 3318 3319 3320
	}

	ret = ath10k_hif_power_up(ar);
	if (ret) {
3321
		ath10k_err(ar, "Could not init hif: %d\n", ret);
3322
		goto err_off;
3323 3324
	}

K
Kalle Valo 已提交
3325
	ret = ath10k_core_start(ar, ATH10K_FIRMWARE_MODE_NORMAL);
3326
	if (ret) {
3327
		ath10k_err(ar, "Could not init core: %d\n", ret);
3328
		goto err_power_down;
3329 3330
	}

3331
	ret = ath10k_wmi_pdev_set_param(ar, ar->wmi.pdev_param->pmf_qos, 1);
3332
	if (ret) {
3333
		ath10k_warn(ar, "failed to enable PMF QOS: %d\n", ret);
3334 3335
		goto err_core_stop;
	}
3336

3337
	ret = ath10k_wmi_pdev_set_param(ar, ar->wmi.pdev_param->dynamic_bw, 1);
3338
	if (ret) {
3339
		ath10k_warn(ar, "failed to enable dynamic BW: %d\n", ret);
3340 3341
		goto err_core_stop;
	}
3342

3343 3344 3345 3346
	if (ar->cfg_tx_chainmask)
		__ath10k_set_antenna(ar, ar->cfg_tx_chainmask,
				     ar->cfg_rx_chainmask);

3347 3348 3349 3350 3351 3352 3353 3354 3355 3356 3357 3358
	/*
	 * By default FW set ARP frames ac to voice (6). In that case ARP
	 * exchange is not working properly for UAPSD enabled AP. ARP requests
	 * which arrives with access category 0 are processed by network stack
	 * and send back with access category 0, but FW changes access category
	 * to 6. Set ARP frames access category to best effort (0) solves
	 * this problem.
	 */

	ret = ath10k_wmi_pdev_set_param(ar,
					ar->wmi.pdev_param->arp_ac_override, 0);
	if (ret) {
3359
		ath10k_warn(ar, "failed to set arp ac override parameter: %d\n",
3360
			    ret);
3361
		goto err_core_stop;
3362 3363
	}

3364 3365 3366 3367 3368 3369 3370 3371
	ret = ath10k_wmi_pdev_set_param(ar,
					ar->wmi.pdev_param->ani_enable, 1);
	if (ret) {
		ath10k_warn(ar, "failed to enable ani by default: %d\n",
			    ret);
		goto err_core_stop;
	}

3372 3373
	ar->ani_enabled = true;

3374
	ar->num_started_vdevs = 0;
3375 3376
	ath10k_regd_update(ar);

3377
	ath10k_spectral_start(ar);
3378
	ath10k_thermal_set_throttling(ar);
3379

3380 3381 3382 3383 3384 3385 3386 3387 3388 3389 3390 3391 3392
	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
3393
	mutex_unlock(&ar->conf_mutex);
3394
	return ret;
3395 3396 3397 3398 3399 3400
}

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

3401 3402
	ath10k_drain_tx(ar);

M
Michal Kazior 已提交
3403
	mutex_lock(&ar->conf_mutex);
3404
	if (ar->state != ATH10K_STATE_OFF) {
3405
		ath10k_halt(ar);
3406 3407
		ar->state = ATH10K_STATE_OFF;
	}
M
Michal Kazior 已提交
3408 3409
	mutex_unlock(&ar->conf_mutex);

3410
	cancel_delayed_work_sync(&ar->scan.timeout);
3411
	cancel_work_sync(&ar->restart_work);
3412 3413
}

3414
static int ath10k_config_ps(struct ath10k *ar)
3415
{
3416 3417
	struct ath10k_vif *arvif;
	int ret = 0;
3418 3419 3420

	lockdep_assert_held(&ar->conf_mutex);

3421 3422 3423
	list_for_each_entry(arvif, &ar->arvifs, list) {
		ret = ath10k_mac_vif_setup_ps(arvif);
		if (ret) {
3424
			ath10k_warn(ar, "failed to setup powersave: %d\n", ret);
3425 3426 3427
			break;
		}
	}
3428

3429
	return ret;
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
static const char *chandef_get_width(enum nl80211_chan_width width)
{
	switch (width) {
	case NL80211_CHAN_WIDTH_20_NOHT:
		return "20 (noht)";
	case NL80211_CHAN_WIDTH_20:
		return "20";
	case NL80211_CHAN_WIDTH_40:
		return "40";
	case NL80211_CHAN_WIDTH_80:
		return "80";
	case NL80211_CHAN_WIDTH_80P80:
		return "80+80";
	case NL80211_CHAN_WIDTH_160:
		return "160";
	case NL80211_CHAN_WIDTH_5:
		return "5";
	case NL80211_CHAN_WIDTH_10:
		return "10";
	}
	return "?";
}

static void ath10k_config_chan(struct ath10k *ar)
{
	struct ath10k_vif *arvif;
	int ret;

	lockdep_assert_held(&ar->conf_mutex);

3462
	ath10k_dbg(ar, ATH10K_DBG_MAC,
3463 3464 3465 3466 3467 3468 3469 3470
		   "mac config channel to %dMHz (cf1 %dMHz cf2 %dMHz width %s)\n",
		   ar->chandef.chan->center_freq,
		   ar->chandef.center_freq1,
		   ar->chandef.center_freq2,
		   chandef_get_width(ar->chandef.width));

	/* First stop monitor interface. Some FW versions crash if there's a
	 * lone monitor interface. */
M
Michal Kazior 已提交
3471
	if (ar->monitor_started)
3472
		ath10k_monitor_stop(ar);
3473 3474 3475 3476 3477

	list_for_each_entry(arvif, &ar->arvifs, list) {
		if (!arvif->is_started)
			continue;

3478 3479 3480
		if (!arvif->is_up)
			continue;

3481 3482 3483
		if (arvif->vdev_type == WMI_VDEV_TYPE_MONITOR)
			continue;

3484
		ret = ath10k_wmi_vdev_down(ar, arvif->vdev_id);
3485
		if (ret) {
3486
			ath10k_warn(ar, "failed to down vdev %d: %d\n",
3487 3488 3489 3490 3491
				    arvif->vdev_id, ret);
			continue;
		}
	}

3492
	/* all vdevs are downed now - attempt to restart and re-up them */
3493 3494 3495 3496 3497 3498 3499 3500

	list_for_each_entry(arvif, &ar->arvifs, list) {
		if (!arvif->is_started)
			continue;

		if (arvif->vdev_type == WMI_VDEV_TYPE_MONITOR)
			continue;

3501 3502 3503 3504 3505 3506 3507 3508 3509 3510
		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);

3511
		ret = ath10k_vdev_restart(arvif);
3512
		if (ret) {
3513
			ath10k_warn(ar, "failed to restart vdev %d: %d\n",
3514 3515 3516 3517 3518 3519 3520 3521 3522 3523
				    arvif->vdev_id, ret);
			continue;
		}

		if (!arvif->is_up)
			continue;

		ret = ath10k_wmi_vdev_up(arvif->ar, arvif->vdev_id, arvif->aid,
					 arvif->bssid);
		if (ret) {
3524
			ath10k_warn(ar, "failed to bring vdev up %d: %d\n",
3525 3526 3527 3528 3529
				    arvif->vdev_id, ret);
			continue;
		}
	}

3530
	ath10k_monitor_recalc(ar);
3531 3532
}

3533 3534 3535 3536 3537 3538 3539 3540 3541 3542 3543 3544 3545 3546 3547 3548 3549 3550 3551 3552 3553 3554 3555 3556 3557 3558 3559 3560 3561 3562 3563 3564 3565 3566 3567 3568 3569 3570 3571 3572 3573 3574 3575 3576 3577 3578 3579 3580 3581 3582 3583 3584 3585 3586 3587 3588 3589
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;
}

3590 3591
static int ath10k_config(struct ieee80211_hw *hw, u32 changed)
{
3592 3593 3594 3595 3596 3597 3598
	struct ath10k *ar = hw->priv;
	struct ieee80211_conf *conf = &hw->conf;
	int ret = 0;

	mutex_lock(&ar->conf_mutex);

	if (changed & IEEE80211_CONF_CHANGE_CHANNEL) {
3599
		ath10k_dbg(ar, ATH10K_DBG_MAC,
3600
			   "mac config channel %dMHz flags 0x%x radar %d\n",
3601
			   conf->chandef.chan->center_freq,
3602 3603
			   conf->chandef.chan->flags,
			   conf->radar_enabled);
3604

3605 3606 3607
		spin_lock_bh(&ar->data_lock);
		ar->rx_channel = conf->chandef.chan;
		spin_unlock_bh(&ar->data_lock);
3608

3609 3610
		ar->radar_enabled = conf->radar_enabled;
		ath10k_recalc_radar_detection(ar);
3611 3612 3613 3614 3615

		if (!cfg80211_chandef_identical(&ar->chandef, &conf->chandef)) {
			ar->chandef = conf->chandef;
			ath10k_config_chan(ar);
		}
3616 3617
	}

3618 3619
	if (changed & IEEE80211_CONF_CHANGE_PS)
		ath10k_config_ps(ar);
3620 3621

	if (changed & IEEE80211_CONF_CHANGE_MONITOR) {
3622 3623 3624 3625
		ar->monitor = conf->flags & IEEE80211_CONF_MONITOR;
		ret = ath10k_monitor_recalc(ar);
		if (ret)
			ath10k_warn(ar, "failed to recalc monitor: %d\n", ret);
3626 3627 3628 3629 3630 3631
	}

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

3632 3633 3634 3635 3636 3637 3638 3639 3640 3641 3642
static u32 get_nss_from_chainmask(u16 chain_mask)
{
	if ((chain_mask & 0x15) == 0x15)
		return 4;
	else if ((chain_mask & 0x7) == 0x7)
		return 3;
	else if ((chain_mask & 0x3) == 0x3)
		return 2;
	return 1;
}

3643 3644 3645 3646 3647 3648 3649 3650 3651 3652 3653 3654 3655 3656
/*
 * TODO:
 * Figure out how to handle WMI_VDEV_SUBTYPE_P2P_DEVICE,
 * because we will send mgmt frames without CCK. This requirement
 * for P2P_FIND/GO_NEG should be handled by checking CCK flag
 * in the TX packet.
 */
static int ath10k_add_interface(struct ieee80211_hw *hw,
				struct ieee80211_vif *vif)
{
	struct ath10k *ar = hw->priv;
	struct ath10k_vif *arvif = ath10k_vif_to_arvif(vif);
	enum wmi_sta_powersave_param param;
	int ret = 0;
3657
	u32 value;
3658
	int bit;
3659
	u32 vdev_param;
3660

3661 3662
	vif->driver_flags |= IEEE80211_VIF_SUPPORTS_UAPSD;

3663 3664
	mutex_lock(&ar->conf_mutex);

3665 3666
	memset(arvif, 0, sizeof(*arvif));

3667 3668 3669
	arvif->ar = ar;
	arvif->vif = vif;

3670
	INIT_LIST_HEAD(&arvif->list);
3671
	INIT_WORK(&arvif->ap_csa_work, ath10k_mac_vif_ap_csa_work);
3672 3673
	INIT_DELAYED_WORK(&arvif->connection_loss_work,
			  ath10k_mac_vif_sta_connection_loss_work);
3674

B
Ben Greear 已提交
3675
	if (ar->free_vdev_map == 0) {
3676
		ath10k_warn(ar, "Free vdev map is empty, no more interfaces allowed.\n");
3677
		ret = -EBUSY;
3678
		goto err;
3679
	}
B
Ben Greear 已提交
3680
	bit = __ffs64(ar->free_vdev_map);
3681

B
Ben Greear 已提交
3682 3683
	ath10k_dbg(ar, ATH10K_DBG_MAC, "mac create vdev %i map %llx\n",
		   bit, ar->free_vdev_map);
3684

B
Ben Greear 已提交
3685
	arvif->vdev_id = bit;
3686 3687 3688
	arvif->vdev_subtype = WMI_VDEV_SUBTYPE_NONE;

	switch (vif->type) {
M
Michal Kazior 已提交
3689 3690 3691 3692
	case NL80211_IFTYPE_P2P_DEVICE:
		arvif->vdev_type = WMI_VDEV_TYPE_STA;
		arvif->vdev_subtype = WMI_VDEV_SUBTYPE_P2P_DEVICE;
		break;
3693 3694 3695 3696 3697 3698 3699 3700 3701 3702 3703 3704 3705 3706 3707 3708 3709 3710 3711 3712 3713 3714 3715
	case NL80211_IFTYPE_UNSPECIFIED:
	case NL80211_IFTYPE_STATION:
		arvif->vdev_type = WMI_VDEV_TYPE_STA;
		if (vif->p2p)
			arvif->vdev_subtype = WMI_VDEV_SUBTYPE_P2P_CLIENT;
		break;
	case NL80211_IFTYPE_ADHOC:
		arvif->vdev_type = WMI_VDEV_TYPE_IBSS;
		break;
	case NL80211_IFTYPE_AP:
		arvif->vdev_type = WMI_VDEV_TYPE_AP;

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

3716 3717 3718 3719 3720 3721 3722 3723 3724 3725 3726 3727 3728 3729 3730 3731 3732 3733 3734 3735 3736
	/* Some firmware revisions don't wait for beacon tx completion before
	 * sending another SWBA event. This could lead to hardware using old
	 * (freed) beacon data in some cases, e.g. tx credit starvation
	 * combined with missed TBTT. This is very very rare.
	 *
	 * On non-IOMMU-enabled hosts this could be a possible security issue
	 * because hw could beacon some random data on the air.  On
	 * IOMMU-enabled hosts DMAR faults would occur in most cases and target
	 * device would crash.
	 *
	 * Since there are no beacon tx completions (implicit nor explicit)
	 * propagated to host the only workaround for this is to allocate a
	 * DMA-coherent buffer for a lifetime of a vif and use it for all
	 * beacon tx commands. Worst case for this approach is some beacons may
	 * become corrupted, e.g. have garbled IEs or out-of-date TIM bitmap.
	 */
	if (vif->type == NL80211_IFTYPE_ADHOC ||
	    vif->type == NL80211_IFTYPE_AP) {
		arvif->beacon_buf = dma_zalloc_coherent(ar->dev,
							IEEE80211_MAX_FRAME_LEN,
							&arvif->beacon_paddr,
3737
							GFP_ATOMIC);
3738 3739 3740 3741 3742 3743 3744 3745 3746 3747 3748
		if (!arvif->beacon_buf) {
			ret = -ENOMEM;
			ath10k_warn(ar, "failed to allocate beacon buffer: %d\n",
				    ret);
			goto err;
		}
	}

	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");
3749 3750 3751 3752

	ret = ath10k_wmi_vdev_create(ar, arvif->vdev_id, arvif->vdev_type,
				     arvif->vdev_subtype, vif->addr);
	if (ret) {
3753
		ath10k_warn(ar, "failed to create WMI vdev %i: %d\n",
3754
			    arvif->vdev_id, ret);
3755
		goto err;
3756 3757
	}

B
Ben Greear 已提交
3758
	ar->free_vdev_map &= ~(1LL << arvif->vdev_id);
M
Michal Kazior 已提交
3759
	list_add(&arvif->list, &ar->arvifs);
3760

M
Michal Kazior 已提交
3761 3762 3763 3764
	/* 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);
3765
	if (ret) {
M
Michal Kazior 已提交
3766
		ath10k_warn(ar, "failed to disable keepalive on vdev %i: %d\n",
3767
			    arvif->vdev_id, ret);
3768 3769
		goto err_vdev_delete;
	}
3770

3771
	arvif->def_wep_key_idx = -1;
3772

3773 3774
	vdev_param = ar->wmi.vdev_param->tx_encap_type;
	ret = ath10k_wmi_vdev_set_param(ar, arvif->vdev_id, vdev_param,
3775
					ATH10K_HW_TXRX_NATIVE_WIFI);
3776
	/* 10.X firmware does not support this VDEV parameter. Do not warn */
3777
	if (ret && ret != -EOPNOTSUPP) {
3778
		ath10k_warn(ar, "failed to set vdev %i TX encapsulation: %d\n",
3779
			    arvif->vdev_id, ret);
3780 3781
		goto err_vdev_delete;
	}
3782

3783 3784 3785 3786 3787 3788 3789 3790 3791 3792 3793 3794 3795 3796
	if (ar->cfg_tx_chainmask) {
		u16 nss = get_nss_from_chainmask(ar->cfg_tx_chainmask);

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

3797
	if (arvif->vdev_type == WMI_VDEV_TYPE_AP) {
3798 3799
		ret = ath10k_peer_create(ar, arvif->vdev_id, vif->addr,
					 WMI_PEER_TYPE_DEFAULT);
3800
		if (ret) {
3801
			ath10k_warn(ar, "failed to create vdev %i peer for AP: %d\n",
3802
				    arvif->vdev_id, ret);
3803
			goto err_vdev_delete;
3804
		}
3805

3806 3807
		ret = ath10k_mac_set_kickout(arvif);
		if (ret) {
3808
			ath10k_warn(ar, "failed to set vdev %i kickout parameters: %d\n",
3809
				    arvif->vdev_id, ret);
3810 3811
			goto err_peer_delete;
		}
3812 3813 3814 3815 3816 3817 3818
	}

	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);
3819
		if (ret) {
3820
			ath10k_warn(ar, "failed to set vdev %i RX wake policy: %d\n",
3821
				    arvif->vdev_id, ret);
3822 3823
			goto err_peer_delete;
		}
3824

M
Michal Kazior 已提交
3825
		ret = ath10k_mac_vif_recalc_ps_wake_threshold(arvif);
3826
		if (ret) {
M
Michal Kazior 已提交
3827
			ath10k_warn(ar, "failed to recalc ps wake threshold on vdev %i: %d\n",
3828
				    arvif->vdev_id, ret);
3829 3830
			goto err_peer_delete;
		}
3831

M
Michal Kazior 已提交
3832
		ret = ath10k_mac_vif_recalc_ps_poll_count(arvif);
3833
		if (ret) {
M
Michal Kazior 已提交
3834
			ath10k_warn(ar, "failed to recalc ps poll count on vdev %i: %d\n",
3835
				    arvif->vdev_id, ret);
3836 3837
			goto err_peer_delete;
		}
3838 3839
	}

3840
	ret = ath10k_mac_set_rts(arvif, ar->hw->wiphy->rts_threshold);
3841
	if (ret) {
3842
		ath10k_warn(ar, "failed to set rts threshold for vdev %d: %d\n",
3843
			    arvif->vdev_id, ret);
3844 3845
		goto err_peer_delete;
	}
3846

3847
	ret = ath10k_mac_set_frag(arvif, ar->hw->wiphy->frag_threshold);
3848
	if (ret) {
3849
		ath10k_warn(ar, "failed to set frag threshold for vdev %d: %d\n",
3850
			    arvif->vdev_id, ret);
3851 3852
		goto err_peer_delete;
	}
3853

3854 3855 3856 3857 3858 3859 3860
	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;
	}

3861
	mutex_unlock(&ar->conf_mutex);
3862 3863 3864 3865 3866 3867 3868 3869
	return 0;

err_peer_delete:
	if (arvif->vdev_type == WMI_VDEV_TYPE_AP)
		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
3870
	ar->free_vdev_map |= 1LL << arvif->vdev_id;
M
Michal Kazior 已提交
3871
	list_del(&arvif->list);
3872 3873

err:
3874 3875 3876 3877 3878 3879
	if (arvif->beacon_buf) {
		dma_free_coherent(ar->dev, IEEE80211_MAX_FRAME_LEN,
				  arvif->beacon_buf, arvif->beacon_paddr);
		arvif->beacon_buf = NULL;
	}

3880 3881
	mutex_unlock(&ar->conf_mutex);

3882 3883 3884 3885 3886 3887 3888 3889 3890 3891
	return ret;
}

static void ath10k_remove_interface(struct ieee80211_hw *hw,
				    struct ieee80211_vif *vif)
{
	struct ath10k *ar = hw->priv;
	struct ath10k_vif *arvif = ath10k_vif_to_arvif(vif);
	int ret;

3892
	cancel_work_sync(&arvif->ap_csa_work);
3893
	cancel_delayed_work_sync(&arvif->connection_loss_work);
3894

3895 3896
	mutex_lock(&ar->conf_mutex);

3897
	spin_lock_bh(&ar->data_lock);
3898
	ath10k_mac_vif_beacon_cleanup(arvif);
3899 3900
	spin_unlock_bh(&ar->data_lock);

3901 3902
	ret = ath10k_spectral_vif_stop(arvif);
	if (ret)
3903
		ath10k_warn(ar, "failed to stop spectral for vdev %i: %d\n",
3904 3905
			    arvif->vdev_id, ret);

B
Ben Greear 已提交
3906
	ar->free_vdev_map |= 1LL << arvif->vdev_id;
M
Michal Kazior 已提交
3907
	list_del(&arvif->list);
3908 3909

	if (arvif->vdev_type == WMI_VDEV_TYPE_AP) {
3910 3911
		ret = ath10k_wmi_peer_delete(arvif->ar, arvif->vdev_id,
					     vif->addr);
3912
		if (ret)
3913
			ath10k_warn(ar, "failed to submit AP self-peer removal on vdev %i: %d\n",
3914
				    arvif->vdev_id, ret);
3915 3916 3917 3918

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

3919
	ath10k_dbg(ar, ATH10K_DBG_MAC, "mac vdev %i delete (remove interface)\n",
K
Kalle Valo 已提交
3920 3921
		   arvif->vdev_id);

3922 3923
	ret = ath10k_wmi_vdev_delete(ar, arvif->vdev_id);
	if (ret)
3924
		ath10k_warn(ar, "failed to delete WMI vdev %i: %d\n",
3925
			    arvif->vdev_id, ret);
3926

3927 3928 3929 3930 3931 3932 3933 3934 3935 3936 3937 3938 3939 3940 3941
	/* Some firmware revisions don't notify host about self-peer removal
	 * until after associated vdev is deleted.
	 */
	if (arvif->vdev_type == WMI_VDEV_TYPE_AP) {
		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);
	}

3942 3943 3944 3945 3946 3947 3948 3949 3950 3951 3952 3953 3954 3955 3956 3957 3958 3959 3960 3961 3962 3963 3964 3965 3966 3967 3968 3969 3970 3971 3972 3973
	ath10k_peer_cleanup(ar, arvif->vdev_id);

	mutex_unlock(&ar->conf_mutex);
}

/*
 * FIXME: Has to be verified.
 */
#define SUPPORTED_FILTERS			\
	(FIF_PROMISC_IN_BSS |			\
	FIF_ALLMULTI |				\
	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;

3974 3975 3976
	ret = ath10k_monitor_recalc(ar);
	if (ret)
		ath10k_warn(ar, "failed to recalc montior: %d\n", ret);
3977 3978 3979 3980 3981 3982 3983 3984 3985 3986 3987 3988

	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;
3989
	u32 vdev_param, pdev_param, slottime, preamble;
3990 3991 3992 3993 3994 3995 3996 3997

	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;
3998 3999
		vdev_param = ar->wmi.vdev_param->beacon_interval;
		ret = ath10k_wmi_vdev_set_param(ar, arvif->vdev_id, vdev_param,
4000
						arvif->beacon_interval);
4001
		ath10k_dbg(ar, ATH10K_DBG_MAC,
K
Kalle Valo 已提交
4002 4003 4004
			   "mac vdev %d beacon_interval %d\n",
			   arvif->vdev_id, arvif->beacon_interval);

4005
		if (ret)
4006
			ath10k_warn(ar, "failed to set beacon interval for vdev %d: %i\n",
4007
				    arvif->vdev_id, ret);
4008 4009 4010
	}

	if (changed & BSS_CHANGED_BEACON) {
4011
		ath10k_dbg(ar, ATH10K_DBG_MAC,
K
Kalle Valo 已提交
4012 4013 4014
			   "vdev %d set beacon tx mode to staggered\n",
			   arvif->vdev_id);

4015 4016
		pdev_param = ar->wmi.pdev_param->beacon_tx_mode;
		ret = ath10k_wmi_pdev_set_param(ar, pdev_param,
4017 4018
						WMI_BEACON_STAGGERED_MODE);
		if (ret)
4019
			ath10k_warn(ar, "failed to set beacon mode for vdev %d: %i\n",
4020
				    arvif->vdev_id, ret);
4021 4022 4023 4024 4025 4026 4027 4028 4029 4030 4031 4032

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

	if (changed & BSS_CHANGED_AP_PROBE_RESP) {
		ret = ath10k_mac_setup_prb_tmpl(arvif);
		if (ret)
			ath10k_warn(ar, "failed to setup probe resp template on vdev %i: %d\n",
				    arvif->vdev_id, ret);
4033 4034
	}

4035
	if (changed & (BSS_CHANGED_BEACON_INFO | BSS_CHANGED_BEACON)) {
4036 4037
		arvif->dtim_period = info->dtim_period;

4038
		ath10k_dbg(ar, ATH10K_DBG_MAC,
K
Kalle Valo 已提交
4039 4040 4041
			   "mac vdev %d dtim_period %d\n",
			   arvif->vdev_id, arvif->dtim_period);

4042 4043
		vdev_param = ar->wmi.vdev_param->dtim_period;
		ret = ath10k_wmi_vdev_set_param(ar, arvif->vdev_id, vdev_param,
4044 4045
						arvif->dtim_period);
		if (ret)
4046
			ath10k_warn(ar, "failed to set dtim period for vdev %d: %i\n",
4047
				    arvif->vdev_id, ret);
4048 4049 4050 4051 4052 4053 4054 4055 4056 4057
	}

	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;
	}

4058 4059
	if (changed & BSS_CHANGED_BSSID && !is_zero_ether_addr(info->bssid))
		ether_addr_copy(arvif->bssid, info->bssid);
4060 4061 4062 4063 4064

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

	if (changed & BSS_CHANGED_ERP_CTS_PROT) {
4065
		arvif->use_cts_prot = info->use_cts_prot;
4066
		ath10k_dbg(ar, ATH10K_DBG_MAC, "mac vdev %d cts_prot %d\n",
4067
			   arvif->vdev_id, info->use_cts_prot);
K
Kalle Valo 已提交
4068

4069
		ret = ath10k_recalc_rtscts_prot(arvif);
4070
		if (ret)
4071
			ath10k_warn(ar, "failed to recalculate rts/cts prot for vdev %d: %d\n",
4072
				    arvif->vdev_id, ret);
M
Michal Kazior 已提交
4073 4074 4075 4076 4077 4078 4079

		vdev_param = ar->wmi.vdev_param->protection_mode;
		ret = ath10k_wmi_vdev_set_param(ar, arvif->vdev_id, vdev_param,
						info->use_cts_prot ? 1 : 0);
		if (ret)
			ath10k_warn(ar, "failed to set protection mode %d on vdev %i: %d\n",
					info->use_cts_prot, arvif->vdev_id, ret);
4080 4081 4082 4083 4084 4085 4086 4087 4088
	}

	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 */

4089
		ath10k_dbg(ar, ATH10K_DBG_MAC, "mac vdev %d slot_time %d\n",
K
Kalle Valo 已提交
4090 4091
			   arvif->vdev_id, slottime);

4092 4093
		vdev_param = ar->wmi.vdev_param->slot_time;
		ret = ath10k_wmi_vdev_set_param(ar, arvif->vdev_id, vdev_param,
4094 4095
						slottime);
		if (ret)
4096
			ath10k_warn(ar, "failed to set erp slot for vdev %d: %i\n",
4097
				    arvif->vdev_id, ret);
4098 4099 4100 4101 4102 4103 4104 4105
	}

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

4106
		ath10k_dbg(ar, ATH10K_DBG_MAC,
K
Kalle Valo 已提交
4107 4108 4109
			   "mac vdev %d preamble %dn",
			   arvif->vdev_id, preamble);

4110 4111
		vdev_param = ar->wmi.vdev_param->preamble;
		ret = ath10k_wmi_vdev_set_param(ar, arvif->vdev_id, vdev_param,
4112 4113
						preamble);
		if (ret)
4114
			ath10k_warn(ar, "failed to set preamble for vdev %d: %i\n",
4115
				    arvif->vdev_id, ret);
4116 4117 4118
	}

	if (changed & BSS_CHANGED_ASSOC) {
4119 4120 4121 4122 4123 4124 4125
		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);
4126
			ath10k_bss_assoc(hw, vif, info);
4127
			ath10k_monitor_recalc(ar);
4128 4129
		} else {
			ath10k_bss_disassoc(hw, vif);
4130
		}
4131 4132
	}

4133 4134 4135 4136 4137 4138 4139 4140 4141 4142
	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);
	}

4143
	if (changed & BSS_CHANGED_PS) {
4144 4145 4146
		arvif->ps = vif->bss_conf.ps;

		ret = ath10k_config_ps(ar);
4147 4148 4149 4150 4151
		if (ret)
			ath10k_warn(ar, "failed to setup ps on vdev %i: %d\n",
				    arvif->vdev_id, ret);
	}

4152 4153 4154 4155 4156
	mutex_unlock(&ar->conf_mutex);
}

static int ath10k_hw_scan(struct ieee80211_hw *hw,
			  struct ieee80211_vif *vif,
4157
			  struct ieee80211_scan_request *hw_req)
4158 4159 4160
{
	struct ath10k *ar = hw->priv;
	struct ath10k_vif *arvif = ath10k_vif_to_arvif(vif);
4161
	struct cfg80211_scan_request *req = &hw_req->req;
4162 4163 4164 4165 4166 4167 4168
	struct wmi_start_scan_arg arg;
	int ret = 0;
	int i;

	mutex_lock(&ar->conf_mutex);

	spin_lock_bh(&ar->data_lock);
4169 4170 4171 4172 4173 4174 4175 4176 4177 4178 4179 4180
	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:
4181
		ret = -EBUSY;
4182
		break;
4183 4184 4185
	}
	spin_unlock_bh(&ar->data_lock);

4186 4187 4188
	if (ret)
		goto exit;

4189 4190 4191 4192 4193 4194 4195 4196 4197 4198 4199 4200 4201 4202 4203 4204 4205 4206 4207
	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->no_cck)
		arg.scan_ctrl_flags |= WMI_SCAN_ADD_CCK_RATES;

	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;
		}
4208 4209
	} else {
		arg.scan_ctrl_flags |= WMI_SCAN_FLAG_PASSIVE;
4210 4211 4212 4213 4214 4215 4216 4217 4218 4219
	}

	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) {
4220
		ath10k_warn(ar, "failed to start hw scan: %d\n", ret);
4221
		spin_lock_bh(&ar->data_lock);
4222
		ar->scan.state = ATH10K_SCAN_IDLE;
4223 4224 4225 4226 4227 4228 4229 4230 4231 4232 4233 4234 4235 4236
		spin_unlock_bh(&ar->data_lock);
	}

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

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

	mutex_lock(&ar->conf_mutex);
4237
	ath10k_scan_abort(ar);
4238
	mutex_unlock(&ar->conf_mutex);
4239 4240

	cancel_delayed_work_sync(&ar->scan.timeout);
4241 4242
}

4243 4244 4245 4246 4247 4248 4249 4250 4251 4252 4253 4254 4255 4256 4257 4258 4259 4260 4261 4262 4263 4264 4265 4266 4267 4268 4269 4270 4271 4272 4273 4274 4275 4276
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).
	 *
	 * FIXME: This has been tested only in AP. It remains unknown if this
	 * is required for multi-vif STA interfaces on 10.1 */

	if (arvif->vdev_type != WMI_VDEV_TYPE_AP)
		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)
4277
		ath10k_warn(ar, "failed to set vdev %i group key as default key: %d\n",
4278
			    arvif->vdev_id, ret);
4279 4280
}

4281 4282 4283 4284 4285 4286 4287 4288 4289 4290 4291
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;
4292
	u32 flags = 0;
4293

4294 4295 4296 4297
	/* this one needs to be done in software */
	if (key->cipher == WLAN_CIPHER_SUITE_AES_CMAC)
		return 1;

4298 4299 4300 4301 4302 4303 4304 4305 4306 4307 4308 4309 4310 4311 4312 4313 4314 4315 4316 4317 4318 4319
	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;

	/* 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) {
4320
			ath10k_warn(ar, "failed to install key for non-existent peer %pM\n",
4321 4322 4323 4324 4325 4326 4327 4328 4329 4330
				    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
4331 4332 4333 4334 4335
	if (key->flags & IEEE80211_KEY_FLAG_PAIRWISE)
		flags |= WMI_KEY_PAIRWISE;
	else
		flags |= WMI_KEY_GROUP;

4336 4337 4338 4339 4340 4341 4342 4343
	if (is_wep) {
		if (cmd == SET_KEY)
			arvif->wep_keys[key->keyidx] = key;
		else
			arvif->wep_keys[key->keyidx] = NULL;

		if (cmd == DISABLE_KEY)
			ath10k_clear_vdev_key(arvif, key);
4344

4345 4346 4347 4348 4349 4350 4351 4352
		/* 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);

4353 4354 4355 4356 4357 4358 4359 4360
		/* 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;
4361

M
Michal Kazior 已提交
4362 4363 4364 4365 4366 4367 4368 4369 4370 4371 4372 4373 4374 4375 4376 4377 4378
		/* mac80211 uploads static WEP keys as groupwise while fw/hw
		 * requires pairwise keys for non-self peers, i.e. BSSID in STA
		 * mode and associated stations in AP/IBSS.
		 *
		 * Static WEP keys for peer_addr=vif->addr and 802.1X WEP keys
		 * work fine when mapped directly from mac80211.
		 *
		 * Note: When installing first static WEP groupwise key (which
		 * should be pairwise) def_wep_key_idx isn't known yet (it's
		 * equal to -1).  Since .set_default_unicast_key is called only
		 * for static WEP it's used to re-upload the key as pairwise.
		 */
		if (arvif->def_wep_key_idx >= 0 &&
		    memcmp(peer_addr, arvif->vif->addr, ETH_ALEN)) {
			flags &= ~WMI_KEY_GROUP;
			flags |= WMI_KEY_PAIRWISE;
		}
4379
	}
4380

4381
	ret = ath10k_install_key(arvif, key, cmd, peer_addr, flags);
4382
	if (ret) {
4383
		ath10k_warn(ar, "failed to install key for vdev %i peer %pM: %d\n",
4384
			    arvif->vdev_id, peer_addr, ret);
4385 4386 4387
		goto exit;
	}

4388 4389
	ath10k_set_key_h_def_keyidx(ar, arvif, cmd, key);

4390 4391 4392 4393 4394 4395 4396 4397
	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 */
4398
		ath10k_warn(ar, "Peer %pM disappeared!\n", peer_addr);
4399 4400 4401 4402 4403 4404 4405
	spin_unlock_bh(&ar->data_lock);

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

4406 4407 4408 4409 4410 4411 4412 4413 4414 4415 4416 4417 4418 4419 4420 4421 4422 4423 4424 4425 4426 4427 4428 4429 4430 4431 4432 4433 4434
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;
4435 4436 4437 4438 4439 4440 4441 4442

	ret = ath10k_mac_vif_sta_fix_wep_key(arvif);
	if (ret) {
		ath10k_warn(ar, "failed to fix sta wep key on vdev %i: %d\n",
			    arvif->vdev_id, ret);
		goto unlock;
	}

4443 4444 4445 4446
unlock:
	mutex_unlock(&arvif->ar->conf_mutex);
}

4447 4448 4449 4450 4451 4452 4453 4454 4455 4456 4457 4458 4459 4460 4461 4462 4463 4464 4465 4466 4467 4468 4469 4470 4471 4472 4473 4474
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;
	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;

	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);

	if (changed & IEEE80211_RC_BW_CHANGED) {
4475
		ath10k_dbg(ar, ATH10K_DBG_MAC, "mac update sta %pM peer bw %d\n",
4476 4477 4478 4479 4480
			   sta->addr, bw);

		err = ath10k_wmi_peer_set_param(ar, arvif->vdev_id, sta->addr,
						WMI_PEER_CHAN_WIDTH, bw);
		if (err)
4481
			ath10k_warn(ar, "failed to update STA %pM peer bw %d: %d\n",
4482 4483 4484 4485
				    sta->addr, bw, err);
	}

	if (changed & IEEE80211_RC_NSS_CHANGED) {
4486
		ath10k_dbg(ar, ATH10K_DBG_MAC, "mac update sta %pM nss %d\n",
4487 4488 4489 4490 4491
			   sta->addr, nss);

		err = ath10k_wmi_peer_set_param(ar, arvif->vdev_id, sta->addr,
						WMI_PEER_NSS, nss);
		if (err)
4492
			ath10k_warn(ar, "failed to update STA %pM nss %d: %d\n",
4493 4494 4495 4496
				    sta->addr, nss, err);
	}

	if (changed & IEEE80211_RC_SMPS_CHANGED) {
4497
		ath10k_dbg(ar, ATH10K_DBG_MAC, "mac update sta %pM smps %d\n",
4498 4499 4500 4501 4502
			   sta->addr, smps);

		err = ath10k_wmi_peer_set_param(ar, arvif->vdev_id, sta->addr,
						WMI_PEER_SMPS_STATE, smps);
		if (err)
4503
			ath10k_warn(ar, "failed to update STA %pM smps %d: %d\n",
4504 4505 4506
				    sta->addr, smps, err);
	}

4507 4508 4509
	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",
4510 4511
			   sta->addr);

M
Michal Kazior 已提交
4512
		err = ath10k_station_assoc(ar, arvif->vif, sta, true);
4513
		if (err)
4514
			ath10k_warn(ar, "failed to reassociate station: %pM\n",
4515 4516 4517
				    sta->addr);
	}

4518 4519 4520
	mutex_unlock(&ar->conf_mutex);
}

M
Marek Puzyniak 已提交
4521 4522
static int ath10k_mac_inc_num_stations(struct ath10k_vif *arvif,
				       struct ieee80211_sta *sta)
4523 4524 4525 4526 4527
{
	struct ath10k *ar = arvif->ar;

	lockdep_assert_held(&ar->conf_mutex);

M
Marek Puzyniak 已提交
4528
	if (arvif->vdev_type == WMI_VDEV_TYPE_STA && !sta->tdls)
4529 4530 4531 4532 4533 4534 4535 4536 4537 4538
		return 0;

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

	ar->num_stations++;

	return 0;
}

M
Marek Puzyniak 已提交
4539 4540
static void ath10k_mac_dec_num_stations(struct ath10k_vif *arvif,
					struct ieee80211_sta *sta)
4541 4542 4543 4544 4545
{
	struct ath10k *ar = arvif->ar;

	lockdep_assert_held(&ar->conf_mutex);

M
Marek Puzyniak 已提交
4546
	if (arvif->vdev_type == WMI_VDEV_TYPE_STA && !sta->tdls)
4547 4548 4549 4550 4551
		return;

	ar->num_stations--;
}

4552 4553 4554 4555 4556 4557 4558 4559 4560 4561 4562 4563 4564 4565 4566 4567 4568 4569 4570 4571 4572 4573 4574 4575 4576 4577 4578 4579 4580 4581 4582 4583 4584 4585 4586 4587 4588 4589 4590 4591 4592 4593 4594 4595 4596 4597 4598 4599 4600 4601 4602 4603 4604
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)
{
	struct ath10k_mac_tdls_iter_data *iter_data = data;
	struct ath10k_sta *arsta = (struct ath10k_sta *)sta->drv_priv;
	struct ieee80211_vif *sta_vif = arsta->arvif->vif;

	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;
}

4605 4606 4607 4608 4609 4610 4611 4612
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);
4613
	struct ath10k_sta *arsta = (struct ath10k_sta *)sta->drv_priv;
4614 4615
	int ret = 0;

4616 4617 4618 4619 4620 4621 4622
	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);
	}

4623 4624 4625 4626 4627
	/* 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);

4628 4629 4630
	mutex_lock(&ar->conf_mutex);

	if (old_state == IEEE80211_STA_NOTEXIST &&
4631
	    new_state == IEEE80211_STA_NONE) {
4632 4633 4634
		/*
		 * New station addition.
		 */
4635 4636 4637 4638
		enum wmi_peer_type peer_type = WMI_PEER_TYPE_DEFAULT;
		u32 num_tdls_stations;
		u32 num_tdls_vifs;

4639 4640 4641 4642 4643
		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);
4644

M
Marek Puzyniak 已提交
4645
		ret = ath10k_mac_inc_num_stations(arvif, sta);
4646 4647 4648
		if (ret) {
			ath10k_warn(ar, "refusing to associate station: too many connected already (%d)\n",
				    ar->max_num_stations);
4649 4650 4651
			goto exit;
		}

4652 4653 4654
		if (sta->tdls)
			peer_type = WMI_PEER_TYPE_TDLS;

4655
		ret = ath10k_peer_create(ar, arvif->vdev_id, sta->addr,
4656
					 peer_type);
M
Michal Kazior 已提交
4657
		if (ret) {
4658
			ath10k_warn(ar, "failed to add peer %pM for vdev %d when adding a new sta: %i\n",
4659
				    sta->addr, arvif->vdev_id, ret);
M
Marek Puzyniak 已提交
4660
			ath10k_mac_dec_num_stations(arvif, sta);
M
Michal Kazior 已提交
4661 4662
			goto exit;
		}
4663

4664 4665
		if (vif->type == NL80211_IFTYPE_STATION &&
		    !sta->tdls) {
4666 4667 4668 4669 4670 4671 4672 4673
			WARN_ON(arvif->is_started);

			ret = ath10k_vdev_start(arvif);
			if (ret) {
				ath10k_warn(ar, "failed to start vdev %i: %d\n",
					    arvif->vdev_id, ret);
				WARN_ON(ath10k_peer_delete(ar, arvif->vdev_id,
							   sta->addr));
M
Marek Puzyniak 已提交
4674
				ath10k_mac_dec_num_stations(arvif, sta);
4675 4676 4677 4678 4679
				goto exit;
			}

			arvif->is_started = true;
		}
4680 4681 4682 4683 4684 4685 4686 4687 4688 4689 4690 4691 4692 4693 4694 4695 4696 4697 4698 4699 4700 4701 4702 4703 4704 4705 4706 4707 4708 4709 4710 4711 4712 4713 4714 4715 4716 4717 4718 4719 4720 4721 4722 4723 4724 4725 4726

		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;
			goto exit;
		}

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

			ret = ath10k_wmi_update_fw_tdls_state(ar, arvif->vdev_id,
							      state);
			if (ret) {
				ath10k_warn(ar, "failed to update fw tdls state on vdev %i: %i\n",
					    arvif->vdev_id, ret);
				ath10k_peer_delete(ar, arvif->vdev_id,
						   sta->addr);
				ath10k_mac_dec_num_stations(arvif, sta);
				goto exit;
			}
		}

		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);

			if (num_tdls_stations != 0)
				goto exit;
			ath10k_wmi_update_fw_tdls_state(ar, arvif->vdev_id,
							WMI_TDLS_DISABLE);
		}
4727 4728 4729 4730 4731
	} else if ((old_state == IEEE80211_STA_NONE &&
		    new_state == IEEE80211_STA_NOTEXIST)) {
		/*
		 * Existing station deletion.
		 */
4732
		ath10k_dbg(ar, ATH10K_DBG_MAC,
K
Kalle Valo 已提交
4733 4734
			   "mac vdev %d peer delete %pM (sta gone)\n",
			   arvif->vdev_id, sta->addr);
4735

4736 4737
		if (vif->type == NL80211_IFTYPE_STATION &&
		    !sta->tdls) {
4738 4739 4740 4741 4742 4743 4744 4745 4746 4747
			WARN_ON(!arvif->is_started);

			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;
		}

4748 4749
		ret = ath10k_peer_delete(ar, arvif->vdev_id, sta->addr);
		if (ret)
4750
			ath10k_warn(ar, "failed to delete peer %pM for vdev %d: %i\n",
4751
				    sta->addr, arvif->vdev_id, ret);
4752

M
Marek Puzyniak 已提交
4753
		ath10k_mac_dec_num_stations(arvif, sta);
4754 4755 4756 4757 4758 4759 4760 4761 4762 4763 4764 4765 4766 4767

		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);
		}
4768 4769 4770 4771 4772 4773 4774
	} else if (old_state == IEEE80211_STA_AUTH &&
		   new_state == IEEE80211_STA_ASSOC &&
		   (vif->type == NL80211_IFTYPE_AP ||
		    vif->type == NL80211_IFTYPE_ADHOC)) {
		/*
		 * New association.
		 */
4775
		ath10k_dbg(ar, ATH10K_DBG_MAC, "mac sta %pM associated\n",
K
Kalle Valo 已提交
4776 4777
			   sta->addr);

M
Michal Kazior 已提交
4778
		ret = ath10k_station_assoc(ar, vif, sta, false);
4779
		if (ret)
4780
			ath10k_warn(ar, "failed to associate station %pM for vdev %i: %i\n",
4781
				    sta->addr, arvif->vdev_id, ret);
4782
	} else if (old_state == IEEE80211_STA_ASSOC &&
4783 4784 4785 4786 4787 4788 4789 4790 4791 4792 4793 4794 4795 4796 4797 4798 4799 4800 4801 4802 4803 4804 4805 4806
		   new_state == IEEE80211_STA_AUTHORIZED &&
		   sta->tdls) {
		/*
		 * Tdls station authorized.
		 */
		ath10k_dbg(ar, ATH10K_DBG_MAC, "mac tdls sta %pM authorized\n",
			   sta->addr);

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

		ret = ath10k_mac_tdls_peer_update(ar, arvif->vdev_id, sta,
						  WMI_TDLS_PEER_STATE_CONNECTED);
		if (ret)
			ath10k_warn(ar, "failed to update tdls peer %pM for vdev %i: %i\n",
				    sta->addr, arvif->vdev_id, ret);
	} else if (old_state == IEEE80211_STA_ASSOC &&
		    new_state == IEEE80211_STA_AUTH &&
		    (vif->type == NL80211_IFTYPE_AP ||
		     vif->type == NL80211_IFTYPE_ADHOC)) {
4807 4808 4809
		/*
		 * Disassociation.
		 */
4810
		ath10k_dbg(ar, ATH10K_DBG_MAC, "mac sta %pM disassociated\n",
K
Kalle Valo 已提交
4811 4812
			   sta->addr);

M
Michal Kazior 已提交
4813
		ret = ath10k_station_disassoc(ar, vif, sta);
4814
		if (ret)
4815
			ath10k_warn(ar, "failed to disassociate station: %pM vdev %i: %i\n",
4816
				    sta->addr, arvif->vdev_id, ret);
4817
	}
4818
exit:
4819 4820 4821 4822 4823
	mutex_unlock(&ar->conf_mutex);
	return ret;
}

static int ath10k_conf_tx_uapsd(struct ath10k *ar, struct ieee80211_vif *vif,
4824
				u16 ac, bool enable)
4825 4826
{
	struct ath10k_vif *arvif = ath10k_vif_to_arvif(vif);
4827 4828
	struct wmi_sta_uapsd_auto_trig_arg arg = {};
	u32 prio = 0, acc = 0;
4829 4830 4831
	u32 value = 0;
	int ret = 0;

M
Michal Kazior 已提交
4832 4833
	lockdep_assert_held(&ar->conf_mutex);

4834 4835 4836 4837 4838 4839 4840
	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;
4841 4842
		prio = 7;
		acc = 3;
4843 4844 4845 4846
		break;
	case IEEE80211_AC_VI:
		value = WMI_STA_PS_UAPSD_AC2_DELIVERY_EN |
			WMI_STA_PS_UAPSD_AC2_TRIGGER_EN;
4847 4848
		prio = 5;
		acc = 2;
4849 4850 4851 4852
		break;
	case IEEE80211_AC_BE:
		value = WMI_STA_PS_UAPSD_AC1_DELIVERY_EN |
			WMI_STA_PS_UAPSD_AC1_TRIGGER_EN;
4853 4854
		prio = 2;
		acc = 1;
4855 4856 4857 4858
		break;
	case IEEE80211_AC_BK:
		value = WMI_STA_PS_UAPSD_AC0_DELIVERY_EN |
			WMI_STA_PS_UAPSD_AC0_TRIGGER_EN;
4859 4860
		prio = 0;
		acc = 0;
4861 4862 4863 4864 4865 4866 4867 4868 4869 4870 4871 4872
		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) {
4873
		ath10k_warn(ar, "failed to set uapsd params: %d\n", ret);
4874 4875 4876 4877 4878 4879 4880 4881 4882 4883 4884 4885
		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)
4886
		ath10k_warn(ar, "failed to set rx wake param: %d\n", ret);
4887

M
Michal Kazior 已提交
4888 4889 4890 4891 4892 4893 4894 4895 4896 4897 4898 4899 4900 4901
	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;
	}

4902 4903 4904 4905 4906 4907 4908 4909 4910 4911 4912 4913 4914 4915 4916 4917 4918 4919 4920 4921 4922 4923 4924
	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;
		}
	}

4925 4926 4927 4928 4929 4930 4931 4932 4933
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;
4934
	struct ath10k_vif *arvif = ath10k_vif_to_arvif(vif);
4935 4936 4937 4938 4939 4940 4941
	struct wmi_wmm_params_arg *p = NULL;
	int ret;

	mutex_lock(&ar->conf_mutex);

	switch (ac) {
	case IEEE80211_AC_VO:
4942
		p = &arvif->wmm_params.ac_vo;
4943 4944
		break;
	case IEEE80211_AC_VI:
4945
		p = &arvif->wmm_params.ac_vi;
4946 4947
		break;
	case IEEE80211_AC_BE:
4948
		p = &arvif->wmm_params.ac_be;
4949 4950
		break;
	case IEEE80211_AC_BK:
4951
		p = &arvif->wmm_params.ac_bk;
4952 4953 4954 4955 4956 4957 4958 4959 4960 4961 4962 4963 4964 4965 4966 4967 4968 4969 4970
		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;

4971 4972 4973 4974 4975 4976 4977 4978 4979 4980 4981 4982 4983 4984 4985 4986 4987
	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;
		}
4988 4989 4990 4991
	}

	ret = ath10k_conf_tx_uapsd(ar, vif, ac, params->uapsd);
	if (ret)
4992
		ath10k_warn(ar, "failed to set sta uapsd: %d\n", ret);
4993 4994 4995 4996 4997 4998 4999 5000 5001 5002 5003 5004 5005 5006 5007 5008 5009

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;
5010
	int ret = 0;
5011 5012 5013 5014

	mutex_lock(&ar->conf_mutex);

	spin_lock_bh(&ar->data_lock);
5015 5016 5017 5018 5019 5020 5021 5022 5023 5024 5025 5026 5027 5028
	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;
		ret = 0;
		break;
	case ATH10K_SCAN_STARTING:
	case ATH10K_SCAN_RUNNING:
	case ATH10K_SCAN_ABORTING:
5029
		ret = -EBUSY;
5030
		break;
5031 5032 5033
	}
	spin_unlock_bh(&ar->data_lock);

5034 5035 5036
	if (ret)
		goto exit;

M
Michal Kazior 已提交
5037 5038
	duration = max(duration, WMI_SCAN_CHAN_MIN_TIME_MSEC);

5039 5040 5041 5042 5043 5044 5045 5046 5047 5048 5049 5050 5051 5052
	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;
	arg.dwell_time_active = duration;
	arg.dwell_time_passive = duration;
	arg.max_scan_time = 2 * duration;
	arg.scan_ctrl_flags |= WMI_SCAN_FLAG_PASSIVE;
	arg.scan_ctrl_flags |= WMI_SCAN_FILTER_PROBE_REQ;

	ret = ath10k_start_scan(ar, &arg);
	if (ret) {
5053
		ath10k_warn(ar, "failed to start roc scan: %d\n", ret);
5054
		spin_lock_bh(&ar->data_lock);
5055
		ar->scan.state = ATH10K_SCAN_IDLE;
5056 5057 5058 5059 5060 5061
		spin_unlock_bh(&ar->data_lock);
		goto exit;
	}

	ret = wait_for_completion_timeout(&ar->scan.on_channel, 3*HZ);
	if (ret == 0) {
5062
		ath10k_warn(ar, "failed to switch to channel for roc scan\n");
5063 5064 5065

		ret = ath10k_scan_stop(ar);
		if (ret)
5066
			ath10k_warn(ar, "failed to stop scan: %d\n", ret);
5067

5068 5069 5070 5071 5072 5073 5074 5075 5076 5077 5078 5079 5080 5081 5082
		ret = -ETIMEDOUT;
		goto exit;
	}

	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);
5083
	ath10k_scan_abort(ar);
5084 5085
	mutex_unlock(&ar->conf_mutex);

5086 5087
	cancel_delayed_work_sync(&ar->scan.timeout);

5088 5089 5090 5091 5092 5093 5094 5095
	return 0;
}

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

5096 5097 5098 5099 5100
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
5101

5102
	mutex_lock(&ar->conf_mutex);
5103
	list_for_each_entry(arvif, &ar->arvifs, list) {
5104
		ath10k_dbg(ar, ATH10K_DBG_MAC, "mac vdev %d rts threshold %d\n",
5105 5106 5107 5108
			   arvif->vdev_id, value);

		ret = ath10k_mac_set_rts(arvif, value);
		if (ret) {
5109
			ath10k_warn(ar, "failed to set rts threshold for vdev %d: %d\n",
5110 5111 5112 5113
				    arvif->vdev_id, ret);
			break;
		}
	}
5114 5115
	mutex_unlock(&ar->conf_mutex);

5116
	return ret;
5117 5118
}

5119 5120
static void ath10k_flush(struct ieee80211_hw *hw, struct ieee80211_vif *vif,
			 u32 queues, bool drop)
5121 5122
{
	struct ath10k *ar = hw->priv;
5123
	bool skip;
5124 5125 5126 5127 5128 5129 5130
	int ret;

	/* 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
5131 5132
	mutex_lock(&ar->conf_mutex);

5133 5134 5135
	if (ar->state == ATH10K_STATE_WEDGED)
		goto skip;

5136
	ret = wait_event_timeout(ar->htt.empty_tx_wq, ({
5137
			bool empty;
5138

5139
			spin_lock_bh(&ar->htt.tx_lock);
5140
			empty = (ar->htt.num_pending_tx == 0);
5141
			spin_unlock_bh(&ar->htt.tx_lock);
5142

M
Michal Kazior 已提交
5143 5144 5145
			skip = (ar->state == ATH10K_STATE_WEDGED) ||
			       test_bit(ATH10K_FLAG_CRASH_FLUSH,
					&ar->dev_flags);
5146 5147

			(empty || skip);
5148
		}), ATH10K_FLUSH_TIMEOUT_HZ);
5149 5150

	if (ret <= 0 || skip)
5151
		ath10k_warn(ar, "failed to flush transmit queue (skip %i ar-state %i): %i\n",
5152
			    skip, ar->state, ret);
M
Michal Kazior 已提交
5153

5154
skip:
M
Michal Kazior 已提交
5155
	mutex_unlock(&ar->conf_mutex);
5156 5157 5158 5159 5160 5161 5162 5163 5164 5165 5166
}

/* 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;
}

5167 5168
static void ath10k_reconfig_complete(struct ieee80211_hw *hw,
				     enum ieee80211_reconfig_type reconfig_type)
5169 5170 5171
{
	struct ath10k *ar = hw->priv;

5172 5173 5174
	if (reconfig_type != IEEE80211_RECONFIG_TYPE_RESTART)
		return;

5175 5176 5177 5178 5179
	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) {
5180
		ath10k_info(ar, "device successfully recovered\n");
5181
		ar->state = ATH10K_STATE_ON;
M
Michal Kazior 已提交
5182
		ieee80211_wake_queues(ar->hw);
5183 5184 5185 5186 5187
	}

	mutex_unlock(&ar->conf_mutex);
}

M
Michal Kazior 已提交
5188 5189 5190 5191 5192 5193 5194 5195 5196 5197 5198 5199 5200 5201 5202 5203 5204 5205 5206 5207 5208 5209 5210 5211 5212 5213 5214 5215 5216 5217
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];

5218 5219 5220
	if (ar->rx_channel == survey->channel)
		survey->filled |= SURVEY_INFO_IN_USE;

M
Michal Kazior 已提交
5221 5222 5223 5224 5225
exit:
	mutex_unlock(&ar->conf_mutex);
	return ret;
}

5226 5227 5228 5229 5230 5231 5232 5233 5234 5235 5236 5237 5238 5239 5240 5241 5242 5243 5244 5245 5246 5247 5248 5249
/* Check if only one bit set */
static int ath10k_check_single_mask(u32 mask)
{
	int bit;

	bit = ffs(mask);
	if (!bit)
		return 0;

	mask &= ~BIT(bit - 1);
	if (mask)
		return 2;

	return 1;
}

static bool
ath10k_default_bitrate_mask(struct ath10k *ar,
			    enum ieee80211_band band,
			    const struct cfg80211_bitrate_mask *mask)
{
	u32 legacy = 0x00ff;
	u8 ht = 0xff, i;
	u16 vht = 0x3ff;
5250 5251 5252 5253
	u16 nrf = ar->num_rf_chains;

	if (ar->cfg_tx_chainmask)
		nrf = get_nss_from_chainmask(ar->cfg_tx_chainmask);
5254 5255 5256 5257 5258 5259 5260 5261 5262 5263 5264 5265 5266 5267 5268

	switch (band) {
	case IEEE80211_BAND_2GHZ:
		legacy = 0x00fff;
		vht = 0;
		break;
	case IEEE80211_BAND_5GHZ:
		break;
	default:
		return false;
	}

	if (mask->control[band].legacy != legacy)
		return false;

5269
	for (i = 0; i < nrf; i++)
5270 5271 5272
		if (mask->control[band].ht_mcs[i] != ht)
			return false;

5273
	for (i = 0; i < nrf; i++)
5274 5275 5276 5277 5278 5279 5280 5281 5282 5283 5284 5285 5286 5287 5288 5289 5290 5291 5292 5293 5294 5295 5296
		if (mask->control[band].vht_mcs[i] != vht)
			return false;

	return true;
}

static bool
ath10k_bitrate_mask_nss(const struct cfg80211_bitrate_mask *mask,
			enum ieee80211_band band,
			u8 *fixed_nss)
{
	int ht_nss = 0, vht_nss = 0, i;

	/* check legacy */
	if (ath10k_check_single_mask(mask->control[band].legacy))
		return false;

	/* check HT */
	for (i = 0; i < IEEE80211_HT_MCS_MASK_LEN; i++) {
		if (mask->control[band].ht_mcs[i] == 0xff)
			continue;
		else if (mask->control[band].ht_mcs[i] == 0x00)
			break;
5297 5298

		return false;
5299 5300 5301 5302 5303 5304 5305 5306 5307 5308
	}

	ht_nss = i;

	/* check VHT */
	for (i = 0; i < NL80211_VHT_NSS_MAX; i++) {
		if (mask->control[band].vht_mcs[i] == 0x03ff)
			continue;
		else if (mask->control[band].vht_mcs[i] == 0x0000)
			break;
5309 5310

		return false;
5311 5312 5313 5314 5315 5316 5317 5318 5319 5320 5321 5322 5323 5324 5325 5326 5327 5328 5329 5330 5331 5332 5333 5334 5335 5336 5337 5338 5339 5340 5341 5342 5343 5344 5345 5346 5347 5348 5349 5350 5351 5352 5353 5354 5355 5356 5357 5358 5359 5360 5361 5362 5363 5364 5365 5366
	}

	vht_nss = i;

	if (ht_nss > 0 && vht_nss > 0)
		return false;

	if (ht_nss)
		*fixed_nss = ht_nss;
	else if (vht_nss)
		*fixed_nss = vht_nss;
	else
		return false;

	return true;
}

static bool
ath10k_bitrate_mask_correct(const struct cfg80211_bitrate_mask *mask,
			    enum ieee80211_band band,
			    enum wmi_rate_preamble *preamble)
{
	int legacy = 0, ht = 0, vht = 0, i;

	*preamble = WMI_RATE_PREAMBLE_OFDM;

	/* check legacy */
	legacy = ath10k_check_single_mask(mask->control[band].legacy);
	if (legacy > 1)
		return false;

	/* check HT */
	for (i = 0; i < IEEE80211_HT_MCS_MASK_LEN; i++)
		ht += ath10k_check_single_mask(mask->control[band].ht_mcs[i]);
	if (ht > 1)
		return false;

	/* check VHT */
	for (i = 0; i < NL80211_VHT_NSS_MAX; i++)
		vht += ath10k_check_single_mask(mask->control[band].vht_mcs[i]);
	if (vht > 1)
		return false;

	/* Currently we support only one fixed_rate */
	if ((legacy + ht + vht) != 1)
		return false;

	if (ht)
		*preamble = WMI_RATE_PREAMBLE_HT;
	else if (vht)
		*preamble = WMI_RATE_PREAMBLE_VHT;

	return true;
}

static bool
5367 5368
ath10k_bitrate_mask_rate(struct ath10k *ar,
			 const struct cfg80211_bitrate_mask *mask,
5369 5370 5371 5372
			 enum ieee80211_band band,
			 u8 *fixed_rate,
			 u8 *fixed_nss)
{
5373
	struct ieee80211_supported_band *sband;
5374 5375 5376 5377 5378 5379 5380 5381 5382 5383 5384 5385 5386
	u8 rate = 0, pream = 0, nss = 0, i;
	enum wmi_rate_preamble preamble;

	/* Check if single rate correct */
	if (!ath10k_bitrate_mask_correct(mask, band, &preamble))
		return false;

	pream = preamble;

	switch (preamble) {
	case WMI_RATE_PREAMBLE_CCK:
	case WMI_RATE_PREAMBLE_OFDM:
		i = ffs(mask->control[band].legacy) - 1;
5387
		sband = &ar->mac.sbands[band];
5388

5389
		if (WARN_ON(i >= sband->n_bitrates))
5390 5391
			return false;

5392
		rate = sband->bitrates[i].hw_value;
5393 5394 5395 5396 5397 5398 5399 5400 5401 5402 5403 5404 5405 5406 5407 5408 5409 5410 5411 5412 5413 5414 5415 5416 5417 5418 5419 5420 5421
		break;
	case WMI_RATE_PREAMBLE_HT:
		for (i = 0; i < IEEE80211_HT_MCS_MASK_LEN; i++)
			if (mask->control[band].ht_mcs[i])
				break;

		if (i == IEEE80211_HT_MCS_MASK_LEN)
			return false;

		rate = ffs(mask->control[band].ht_mcs[i]) - 1;
		nss = i;
		break;
	case WMI_RATE_PREAMBLE_VHT:
		for (i = 0; i < NL80211_VHT_NSS_MAX; i++)
			if (mask->control[band].vht_mcs[i])
				break;

		if (i == NL80211_VHT_NSS_MAX)
			return false;

		rate = ffs(mask->control[band].vht_mcs[i]) - 1;
		nss = i;
		break;
	}

	*fixed_nss = nss + 1;
	nss <<= 4;
	pream <<= 6;

5422
	ath10k_dbg(ar, ATH10K_DBG_MAC, "mac fixed rate pream 0x%02x nss 0x%02x rate 0x%02x\n",
5423 5424 5425 5426 5427 5428 5429
		   pream, nss, rate);

	*fixed_rate = pream | nss | rate;

	return true;
}

5430 5431
static bool ath10k_get_fixed_rate_nss(struct ath10k *ar,
				      const struct cfg80211_bitrate_mask *mask,
5432 5433 5434 5435 5436 5437 5438 5439 5440
				      enum ieee80211_band band,
				      u8 *fixed_rate,
				      u8 *fixed_nss)
{
	/* First check full NSS mask, if we can simply limit NSS */
	if (ath10k_bitrate_mask_nss(mask, band, fixed_nss))
		return true;

	/* Next Check single rate is set */
5441
	return ath10k_bitrate_mask_rate(ar, mask, band, fixed_rate, fixed_nss);
5442 5443 5444 5445
}

static int ath10k_set_fixed_rate_param(struct ath10k_vif *arvif,
				       u8 fixed_rate,
5446 5447
				       u8 fixed_nss,
				       u8 force_sgi)
5448 5449 5450 5451 5452 5453 5454 5455
{
	struct ath10k *ar = arvif->ar;
	u32 vdev_param;
	int ret = 0;

	mutex_lock(&ar->conf_mutex);

	if (arvif->fixed_rate == fixed_rate &&
5456 5457
	    arvif->fixed_nss == fixed_nss &&
	    arvif->force_sgi == force_sgi)
5458 5459 5460
		goto exit;

	if (fixed_rate == WMI_FIXED_RATE_NONE)
5461
		ath10k_dbg(ar, ATH10K_DBG_MAC, "mac disable fixed bitrate mask\n");
5462

5463
	if (force_sgi)
5464
		ath10k_dbg(ar, ATH10K_DBG_MAC, "mac force sgi\n");
5465

5466 5467 5468 5469
	vdev_param = ar->wmi.vdev_param->fixed_rate;
	ret = ath10k_wmi_vdev_set_param(ar, arvif->vdev_id,
					vdev_param, fixed_rate);
	if (ret) {
5470
		ath10k_warn(ar, "failed to set fixed rate param 0x%02x: %d\n",
5471 5472 5473 5474 5475 5476 5477 5478 5479 5480 5481 5482
			    fixed_rate, ret);
		ret = -EINVAL;
		goto exit;
	}

	arvif->fixed_rate = fixed_rate;

	vdev_param = ar->wmi.vdev_param->nss;
	ret = ath10k_wmi_vdev_set_param(ar, arvif->vdev_id,
					vdev_param, fixed_nss);

	if (ret) {
5483
		ath10k_warn(ar, "failed to set fixed nss param %d: %d\n",
5484 5485 5486 5487 5488 5489 5490
			    fixed_nss, ret);
		ret = -EINVAL;
		goto exit;
	}

	arvif->fixed_nss = fixed_nss;

5491 5492 5493 5494 5495
	vdev_param = ar->wmi.vdev_param->sgi;
	ret = ath10k_wmi_vdev_set_param(ar, arvif->vdev_id, vdev_param,
					force_sgi);

	if (ret) {
5496
		ath10k_warn(ar, "failed to set sgi param %d: %d\n",
5497 5498 5499 5500 5501 5502 5503
			    force_sgi, ret);
		ret = -EINVAL;
		goto exit;
	}

	arvif->force_sgi = force_sgi;

5504 5505 5506 5507 5508 5509 5510 5511 5512 5513 5514 5515 5516 5517
exit:
	mutex_unlock(&ar->conf_mutex);
	return ret;
}

static int ath10k_set_bitrate_mask(struct ieee80211_hw *hw,
				   struct ieee80211_vif *vif,
				   const struct cfg80211_bitrate_mask *mask)
{
	struct ath10k_vif *arvif = ath10k_vif_to_arvif(vif);
	struct ath10k *ar = arvif->ar;
	enum ieee80211_band band = ar->hw->conf.chandef.chan->band;
	u8 fixed_rate = WMI_FIXED_RATE_NONE;
	u8 fixed_nss = ar->num_rf_chains;
5518 5519
	u8 force_sgi;

5520 5521 5522
	if (ar->cfg_tx_chainmask)
		fixed_nss = get_nss_from_chainmask(ar->cfg_tx_chainmask);

5523 5524 5525
	force_sgi = mask->control[band].gi;
	if (force_sgi == NL80211_TXRATE_FORCE_LGI)
		return -EINVAL;
5526 5527

	if (!ath10k_default_bitrate_mask(ar, band, mask)) {
5528
		if (!ath10k_get_fixed_rate_nss(ar, mask, band,
5529 5530 5531 5532 5533
					       &fixed_rate,
					       &fixed_nss))
			return -EINVAL;
	}

5534
	if (fixed_rate == WMI_FIXED_RATE_NONE && force_sgi) {
5535
		ath10k_warn(ar, "failed to force SGI usage for default rate settings\n");
5536 5537 5538 5539 5540
		return -EINVAL;
	}

	return ath10k_set_fixed_rate_param(arvif, fixed_rate,
					   fixed_nss, force_sgi);
5541 5542
}

5543 5544 5545 5546 5547 5548 5549 5550 5551 5552 5553
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);

5554
	ath10k_dbg(ar, ATH10K_DBG_MAC,
5555 5556 5557 5558 5559 5560 5561 5562 5563 5564 5565 5566 5567 5568 5569 5570 5571 5572
		   "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:
5573
			ath10k_warn(ar, "Invalid bandwith %d in rc update for %pM\n",
5574
				    sta->bandwidth, sta->addr);
5575 5576 5577 5578 5579 5580 5581 5582 5583 5584 5585 5586 5587 5588 5589 5590 5591 5592 5593 5594 5595 5596 5597 5598 5599
			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:
5600
			ath10k_warn(ar, "Invalid smps %d in sta rc update for %pM\n",
5601
				    sta->smps_mode, sta->addr);
5602 5603 5604 5605 5606 5607 5608 5609 5610 5611 5612 5613 5614 5615
			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);
}

5616 5617 5618 5619 5620 5621 5622 5623 5624 5625
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;
}

5626 5627 5628 5629 5630 5631
static int ath10k_ampdu_action(struct ieee80211_hw *hw,
			       struct ieee80211_vif *vif,
			       enum ieee80211_ampdu_mlme_action action,
			       struct ieee80211_sta *sta, u16 tid, u16 *ssn,
			       u8 buf_size)
{
5632
	struct ath10k *ar = hw->priv;
5633 5634
	struct ath10k_vif *arvif = ath10k_vif_to_arvif(vif);

5635
	ath10k_dbg(ar, ATH10K_DBG_MAC, "mac ampdu vdev_id %i sta %pM tid %hu action %d\n",
5636 5637 5638 5639 5640 5641 5642 5643 5644 5645 5646 5647 5648 5649 5650 5651 5652 5653 5654 5655 5656 5657 5658
		   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;
}

5659 5660 5661 5662 5663 5664 5665 5666 5667 5668 5669 5670
static const struct ieee80211_ops ath10k_ops = {
	.tx				= ath10k_tx,
	.start				= ath10k_start,
	.stop				= ath10k_stop,
	.config				= ath10k_config,
	.add_interface			= ath10k_add_interface,
	.remove_interface		= ath10k_remove_interface,
	.configure_filter		= ath10k_configure_filter,
	.bss_info_changed		= ath10k_bss_info_changed,
	.hw_scan			= ath10k_hw_scan,
	.cancel_hw_scan			= ath10k_cancel_hw_scan,
	.set_key			= ath10k_set_key,
5671
	.set_default_unicast_key        = ath10k_set_default_unicast_key,
5672 5673 5674 5675 5676 5677 5678
	.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,
	.flush				= ath10k_flush,
	.tx_last_beacon			= ath10k_tx_last_beacon,
5679 5680
	.set_antenna			= ath10k_set_antenna,
	.get_antenna			= ath10k_get_antenna,
5681
	.reconfig_complete		= ath10k_reconfig_complete,
M
Michal Kazior 已提交
5682
	.get_survey			= ath10k_get_survey,
5683
	.set_bitrate_mask		= ath10k_set_bitrate_mask,
5684
	.sta_rc_update			= ath10k_sta_rc_update,
5685
	.get_tsf			= ath10k_get_tsf,
5686
	.ampdu_action			= ath10k_ampdu_action,
B
Ben Greear 已提交
5687 5688 5689
	.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,
K
Kalle Valo 已提交
5690 5691 5692

	CFG80211_TESTMODE_CMD(ath10k_tm_cmd)

M
Michal Kazior 已提交
5693
#ifdef CONFIG_PM
5694 5695
	.suspend			= ath10k_wow_op_suspend,
	.resume				= ath10k_wow_op_resume,
M
Michal Kazior 已提交
5696
#endif
5697 5698 5699
#ifdef CONFIG_MAC80211_DEBUGFS
	.sta_add_debugfs		= ath10k_sta_add_debugfs,
#endif
5700 5701 5702 5703 5704 5705 5706 5707 5708 5709 5710 5711 5712 5713 5714 5715 5716 5717 5718 5719 5720 5721 5722 5723 5724 5725 5726 5727 5728 5729 5730 5731 5732 5733 5734 5735 5736 5737
};

#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[] = {
5738 5739 5740 5741 5742 5743 5744 5745 5746 5747 5748 5749 5750 5751 5752 5753 5754 5755 5756
	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),
5757
	CHAN5G(144, 5720, 0),
5758 5759 5760 5761 5762
	CHAN5G(149, 5745, 0),
	CHAN5G(153, 5765, 0),
	CHAN5G(157, 5785, 0),
	CHAN5G(161, 5805, 0),
	CHAN5G(165, 5825, 0),
5763 5764
};

M
Michal Kazior 已提交
5765
struct ath10k *ath10k_mac_create(size_t priv_size)
5766 5767 5768 5769
{
	struct ieee80211_hw *hw;
	struct ath10k *ar;

M
Michal Kazior 已提交
5770
	hw = ieee80211_alloc_hw(sizeof(struct ath10k) + priv_size, &ath10k_ops);
5771 5772 5773 5774 5775 5776 5777 5778 5779 5780 5781 5782 5783 5784 5785 5786 5787 5788 5789
	if (!hw)
		return NULL;

	ar = hw->priv;
	ar->hw = hw;

	return ar;
}

void ath10k_mac_destroy(struct ath10k *ar)
{
	ieee80211_free_hw(ar->hw);
}

static const struct ieee80211_iface_limit ath10k_if_limits[] = {
	{
	.max	= 8,
	.types	= BIT(NL80211_IFTYPE_STATION)
		| BIT(NL80211_IFTYPE_P2P_CLIENT)
5790 5791 5792 5793 5794 5795
	},
	{
	.max	= 3,
	.types	= BIT(NL80211_IFTYPE_P2P_GO)
	},
	{
M
Michal Kazior 已提交
5796 5797 5798 5799
	.max	= 1,
	.types	= BIT(NL80211_IFTYPE_P2P_DEVICE)
	},
	{
5800 5801 5802
	.max	= 7,
	.types	= BIT(NL80211_IFTYPE_AP)
	},
5803 5804
};

5805
static const struct ieee80211_iface_limit ath10k_10x_if_limits[] = {
5806 5807 5808 5809 5810 5811 5812 5813 5814 5815 5816 5817 5818 5819
	{
	.max	= 8,
	.types	= BIT(NL80211_IFTYPE_AP)
	},
};

static const struct ieee80211_iface_combination ath10k_if_comb[] = {
	{
		.limits = ath10k_if_limits,
		.n_limits = ARRAY_SIZE(ath10k_if_limits),
		.max_interfaces = 8,
		.num_different_channels = 1,
		.beacon_int_infra_match = true,
	},
5820 5821 5822
};

static const struct ieee80211_iface_combination ath10k_10x_if_comb[] = {
5823
	{
5824 5825
		.limits = ath10k_10x_if_limits,
		.n_limits = ARRAY_SIZE(ath10k_10x_if_limits),
5826 5827 5828
		.max_interfaces = 8,
		.num_different_channels = 1,
		.beacon_int_infra_match = true,
5829
#ifdef CONFIG_ATH10K_DFS_CERTIFIED
5830 5831 5832 5833 5834
		.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
5835
	},
5836 5837 5838 5839 5840 5841
};

static struct ieee80211_sta_vht_cap ath10k_create_vht_cap(struct ath10k *ar)
{
	struct ieee80211_sta_vht_cap vht_cap = {0};
	u16 mcs_map;
5842
	u32 val;
5843
	int i;
5844 5845 5846 5847

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

5848 5849 5850 5851 5852 5853 5854 5855 5856 5857 5858 5859 5860 5861 5862 5863 5864 5865
	if (ar->vht_cap_info & (IEEE80211_VHT_CAP_SU_BEAMFORMEE_CAPABLE |
				IEEE80211_VHT_CAP_MU_BEAMFORMEE_CAPABLE)) {
		val = ar->num_rf_chains - 1;
		val <<= IEEE80211_VHT_CAP_BEAMFORMEE_STS_SHIFT;
		val &= IEEE80211_VHT_CAP_BEAMFORMEE_STS_MASK;

		vht_cap.cap |= val;
	}

	if (ar->vht_cap_info & (IEEE80211_VHT_CAP_SU_BEAMFORMER_CAPABLE |
				IEEE80211_VHT_CAP_MU_BEAMFORMER_CAPABLE)) {
		val = ar->num_rf_chains - 1;
		val <<= IEEE80211_VHT_CAP_SOUNDING_DIMENSIONS_SHIFT;
		val &= IEEE80211_VHT_CAP_SOUNDING_DIMENSIONS_MASK;

		vht_cap.cap |= val;
	}

5866 5867 5868 5869 5870 5871 5872
	mcs_map = 0;
	for (i = 0; i < 8; i++) {
		if (i < ar->num_rf_chains)
			mcs_map |= IEEE80211_VHT_MCS_SUPPORT_0_9 << (i*2);
		else
			mcs_map |= IEEE80211_VHT_MCS_NOT_SUPPORTED << (i*2);
	}
5873 5874 5875 5876 5877 5878 5879 5880 5881 5882 5883 5884 5885 5886 5887 5888 5889 5890 5891 5892 5893 5894 5895 5896 5897 5898 5899 5900 5901 5902 5903 5904 5905 5906 5907 5908 5909 5910 5911 5912 5913 5914 5915 5916 5917 5918 5919 5920 5921 5922 5923 5924 5925 5926 5927 5928 5929 5930 5931 5932 5933 5934

	vht_cap.vht_mcs.rx_mcs_map = cpu_to_le16(mcs_map);
	vht_cap.vht_mcs.tx_mcs_map = cpu_to_le16(mcs_map);

	return vht_cap;
}

static struct ieee80211_sta_ht_cap ath10k_get_ht_cap(struct ath10k *ar)
{
	int i;
	struct ieee80211_sta_ht_cap ht_cap = {0};

	if (!(ar->ht_cap_info & WMI_HT_CAP_ENABLED))
		return ht_cap;

	ht_cap.ht_supported = 1;
	ht_cap.ampdu_factor = IEEE80211_HT_MAX_AMPDU_64K;
	ht_cap.ampdu_density = IEEE80211_HT_MPDU_DENSITY_8;
	ht_cap.cap |= IEEE80211_HT_CAP_SUP_WIDTH_20_40;
	ht_cap.cap |= IEEE80211_HT_CAP_DSSSCCK40;
	ht_cap.cap |= WLAN_HT_CAP_SM_PS_STATIC << IEEE80211_HT_CAP_SM_PS_SHIFT;

	if (ar->ht_cap_info & WMI_HT_CAP_HT20_SGI)
		ht_cap.cap |= IEEE80211_HT_CAP_SGI_20;

	if (ar->ht_cap_info & WMI_HT_CAP_HT40_SGI)
		ht_cap.cap |= IEEE80211_HT_CAP_SGI_40;

	if (ar->ht_cap_info & WMI_HT_CAP_DYNAMIC_SMPS) {
		u32 smps;

		smps   = WLAN_HT_CAP_SM_PS_DYNAMIC;
		smps <<= IEEE80211_HT_CAP_SM_PS_SHIFT;

		ht_cap.cap |= smps;
	}

	if (ar->ht_cap_info & WMI_HT_CAP_TX_STBC)
		ht_cap.cap |= IEEE80211_HT_CAP_TX_STBC;

	if (ar->ht_cap_info & WMI_HT_CAP_RX_STBC) {
		u32 stbc;

		stbc   = ar->ht_cap_info;
		stbc  &= WMI_HT_CAP_RX_STBC;
		stbc >>= WMI_HT_CAP_RX_STBC_MASK_SHIFT;
		stbc <<= IEEE80211_HT_CAP_RX_STBC_SHIFT;
		stbc  &= IEEE80211_HT_CAP_RX_STBC;

		ht_cap.cap |= stbc;
	}

	if (ar->ht_cap_info & WMI_HT_CAP_LDPC)
		ht_cap.cap |= IEEE80211_HT_CAP_LDPC_CODING;

	if (ar->ht_cap_info & WMI_HT_CAP_L_SIG_TXOP_PROT)
		ht_cap.cap |= IEEE80211_HT_CAP_LSIG_TXOP_PROT;

	/* max AMSDU is implicitly taken from vht_cap_info */
	if (ar->vht_cap_info & WMI_VHT_CAP_MAX_MPDU_LEN_MASK)
		ht_cap.cap |= IEEE80211_HT_CAP_MAX_AMSDU;

5935
	for (i = 0; i < ar->num_rf_chains; i++)
5936 5937 5938 5939 5940 5941 5942 5943 5944 5945 5946 5947 5948 5949 5950 5951 5952 5953 5954 5955 5956 5957 5958 5959 5960 5961 5962 5963 5964 5965 5966
		ht_cap.mcs.rx_mask[i] = 0xFF;

	ht_cap.mcs.tx_params |= IEEE80211_HT_MCS_TX_DEFINED;

	return ht_cap;
}

static void ath10k_get_arvif_iter(void *data, u8 *mac,
				  struct ieee80211_vif *vif)
{
	struct ath10k_vif_iter *arvif_iter = data;
	struct ath10k_vif *arvif = ath10k_vif_to_arvif(vif);

	if (arvif->vdev_id == arvif_iter->vdev_id)
		arvif_iter->arvif = arvif;
}

struct ath10k_vif *ath10k_get_arvif(struct ath10k *ar, u32 vdev_id)
{
	struct ath10k_vif_iter arvif_iter;
	u32 flags;

	memset(&arvif_iter, 0, sizeof(struct ath10k_vif_iter));
	arvif_iter.vdev_id = vdev_id;

	flags = IEEE80211_IFACE_ITER_RESUME_ALL;
	ieee80211_iterate_active_interfaces_atomic(ar->hw,
						   flags,
						   ath10k_get_arvif_iter,
						   &arvif_iter);
	if (!arvif_iter.arvif) {
5967
		ath10k_warn(ar, "No VIF found for vdev %d\n", vdev_id);
5968 5969 5970 5971 5972 5973 5974 5975
		return NULL;
	}

	return arvif_iter.arvif;
}

int ath10k_mac_register(struct ath10k *ar)
{
5976 5977 5978 5979 5980 5981 5982
	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,
	};
5983 5984 5985 5986 5987 5988 5989 5990 5991 5992 5993 5994 5995 5996 5997 5998 5999
	struct ieee80211_supported_band *band;
	struct ieee80211_sta_vht_cap vht_cap;
	struct ieee80211_sta_ht_cap ht_cap;
	void *channels;
	int ret;

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

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

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

	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
6000 6001 6002 6003
		if (!channels) {
			ret = -ENOMEM;
			goto err_free;
		}
6004 6005 6006 6007 6008 6009 6010 6011

		band = &ar->mac.sbands[IEEE80211_BAND_2GHZ];
		band->n_channels = ARRAY_SIZE(ath10k_2ghz_channels);
		band->channels = channels;
		band->n_bitrates = ath10k_g_rates_size;
		band->bitrates = ath10k_g_rates;
		band->ht_cap = ht_cap;

6012 6013
		/* Enable the VHT support at 2.4 GHz */
		band->vht_cap = vht_cap;
6014 6015 6016 6017 6018 6019 6020 6021 6022

		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
6023 6024
			ret = -ENOMEM;
			goto err_free;
6025 6026 6027 6028 6029 6030 6031 6032 6033 6034 6035 6036 6037 6038
		}

		band = &ar->mac.sbands[IEEE80211_BAND_5GHZ];
		band->n_channels = ARRAY_SIZE(ath10k_5ghz_channels);
		band->channels = channels;
		band->n_bitrates = ath10k_a_rates_size;
		band->bitrates = ath10k_a_rates;
		band->ht_cap = ht_cap;
		band->vht_cap = vht_cap;
		ar->hw->wiphy->bands[IEEE80211_BAND_5GHZ] = band;
	}

	ar->hw->wiphy->interface_modes =
		BIT(NL80211_IFTYPE_STATION) |
6039 6040
		BIT(NL80211_IFTYPE_AP);

6041 6042 6043
	ar->hw->wiphy->available_antennas_rx = ar->supp_rx_chainmask;
	ar->hw->wiphy->available_antennas_tx = ar->supp_tx_chainmask;

6044 6045
	if (!test_bit(ATH10K_FW_FEATURE_NO_P2P, ar->fw_features))
		ar->hw->wiphy->interface_modes |=
M
Michal Kazior 已提交
6046
			BIT(NL80211_IFTYPE_P2P_DEVICE) |
6047 6048
			BIT(NL80211_IFTYPE_P2P_CLIENT) |
			BIT(NL80211_IFTYPE_P2P_GO);
6049 6050 6051 6052 6053 6054 6055

	ar->hw->flags = IEEE80211_HW_SIGNAL_DBM |
			IEEE80211_HW_SUPPORTS_PS |
			IEEE80211_HW_SUPPORTS_DYNAMIC_PS |
			IEEE80211_HW_MFP_CAPABLE |
			IEEE80211_HW_REPORTS_TX_ACK_STATUS |
			IEEE80211_HW_HAS_RATE_CONTROL |
6056
			IEEE80211_HW_AP_LINK_PS |
6057
			IEEE80211_HW_SPECTRUM_MGMT |
6058 6059
			IEEE80211_HW_SW_CRYPTO_CONTROL |
			IEEE80211_HW_CONNECTION_MONITOR;
6060

6061 6062
	ar->hw->wiphy->features |= NL80211_FEATURE_STATIC_SMPS;

6063
	if (ar->ht_cap_info & WMI_HT_CAP_DYNAMIC_SMPS)
6064
		ar->hw->wiphy->features |= NL80211_FEATURE_DYNAMIC_SMPS;
6065 6066 6067 6068 6069 6070 6071 6072 6073 6074

	if (ar->ht_cap_info & WMI_HT_CAP_ENABLED) {
		ar->hw->flags |= IEEE80211_HW_AMPDU_AGGREGATION;
		ar->hw->flags |= IEEE80211_HW_TX_AMPDU_SETUP_IN_HW;
	}

	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);
6075
	ar->hw->sta_data_size = sizeof(struct ath10k_sta);
6076 6077 6078

	ar->hw->max_listen_interval = ATH10K_MAX_HW_LISTEN_INTERVAL;

6079 6080 6081 6082 6083 6084 6085 6086 6087 6088 6089 6090 6091
	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;
	}

6092 6093 6094
	if (test_bit(WMI_SERVICE_TDLS, ar->wmi.svc_map))
		ar->hw->wiphy->flags |= WIPHY_FLAG_SUPPORTS_TDLS;

6095
	ar->hw->wiphy->flags |= WIPHY_FLAG_HAS_REMAIN_ON_CHANNEL;
M
Michal Kazior 已提交
6096
	ar->hw->wiphy->flags |= WIPHY_FLAG_HAS_CHANNEL_SWITCH;
6097 6098 6099
	ar->hw->wiphy->max_remain_on_channel_duration = 5000;

	ar->hw->wiphy->flags |= WIPHY_FLAG_AP_UAPSD;
6100 6101
	ar->hw->wiphy->features |= NL80211_FEATURE_AP_MODE_CHAN_WIDTH_CHANGE;

6102 6103
	ar->hw->wiphy->max_ap_assoc_sta = ar->max_num_stations;

6104 6105 6106 6107 6108 6109
	ret = ath10k_wow_init(ar);
	if (ret) {
		ath10k_warn(ar, "failed to init wow: %d\n", ret);
		goto err_free;
	}

6110 6111 6112 6113 6114 6115
	/*
	 * on LL hardware queues are managed entirely by the FW
	 * so we only advertise to mac we can do the queues thing
	 */
	ar->hw->queues = 4;

6116 6117 6118
	switch (ar->wmi.op_version) {
	case ATH10K_FW_WMI_OP_VERSION_MAIN:
	case ATH10K_FW_WMI_OP_VERSION_TLV:
6119 6120 6121
		ar->hw->wiphy->iface_combinations = ath10k_if_comb;
		ar->hw->wiphy->n_iface_combinations =
			ARRAY_SIZE(ath10k_if_comb);
6122
		ar->hw->wiphy->interface_modes |= BIT(NL80211_IFTYPE_ADHOC);
6123 6124 6125
		break;
	case ATH10K_FW_WMI_OP_VERSION_10_1:
	case ATH10K_FW_WMI_OP_VERSION_10_2:
6126
	case ATH10K_FW_WMI_OP_VERSION_10_2_4:
6127 6128 6129 6130 6131 6132 6133 6134 6135
		ar->hw->wiphy->iface_combinations = ath10k_10x_if_comb;
		ar->hw->wiphy->n_iface_combinations =
			ARRAY_SIZE(ath10k_10x_if_comb);
		break;
	case ATH10K_FW_WMI_OP_VERSION_UNSET:
	case ATH10K_FW_WMI_OP_VERSION_MAX:
		WARN_ON(1);
		ret = -EINVAL;
		goto err_free;
6136
	}
6137

6138 6139
	ar->hw->netdev_features = NETIF_F_HW_CSUM;

J
Janusz Dziedzic 已提交
6140 6141 6142 6143 6144 6145 6146
	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)
6147
			ath10k_warn(ar, "failed to initialise DFS pattern detector\n");
J
Janusz Dziedzic 已提交
6148 6149
	}

6150 6151 6152
	ret = ath_regd_init(&ar->ath_common.regulatory, ar->hw->wiphy,
			    ath10k_reg_notifier);
	if (ret) {
6153
		ath10k_err(ar, "failed to initialise regulatory: %i\n", ret);
M
Michal Kazior 已提交
6154
		goto err_free;
6155 6156
	}

6157 6158 6159
	ar->hw->wiphy->cipher_suites = cipher_suites;
	ar->hw->wiphy->n_cipher_suites = ARRAY_SIZE(cipher_suites);

6160 6161
	ret = ieee80211_register_hw(ar->hw);
	if (ret) {
6162
		ath10k_err(ar, "failed to register ieee80211: %d\n", ret);
M
Michal Kazior 已提交
6163
		goto err_free;
6164 6165 6166 6167 6168 6169
	}

	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
6170
			goto err_unregister;
6171 6172 6173
	}

	return 0;
M
Michal Kazior 已提交
6174 6175

err_unregister:
6176
	ieee80211_unregister_hw(ar->hw);
M
Michal Kazior 已提交
6177 6178 6179 6180
err_free:
	kfree(ar->mac.sbands[IEEE80211_BAND_2GHZ].channels);
	kfree(ar->mac.sbands[IEEE80211_BAND_5GHZ].channels);

6181 6182 6183 6184 6185 6186 6187
	return ret;
}

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

J
Janusz Dziedzic 已提交
6188 6189 6190
	if (config_enabled(CONFIG_ATH10K_DFS_CERTIFIED) && ar->dfs_detector)
		ar->dfs_detector->exit(ar->dfs_detector);

6191 6192 6193 6194 6195
	kfree(ar->mac.sbands[IEEE80211_BAND_2GHZ].channels);
	kfree(ar->mac.sbands[IEEE80211_BAND_5GHZ].channels);

	SET_IEEE80211_DEV(ar->hw, NULL);
}