mac.c 138.0 KB
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/*
 * Copyright (c) 2005-2011 Atheros Communications Inc.
 * Copyright (c) 2011-2013 Qualcomm Atheros, Inc.
 *
 * Permission to use, copy, modify, and/or distribute this software for any
 * purpose with or without fee is hereby granted, provided that the above
 * copyright notice and this permission notice appear in all copies.
 *
 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
 */

#include "mac.h"

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

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#include "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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/**********/
/* 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, bool def_idx)
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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,
		.macaddr = macaddr,
	};

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

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	if (key->flags & IEEE80211_KEY_FLAG_PAIRWISE)
		arg.key_flags = WMI_KEY_PAIRWISE;
	else
		arg.key_flags = WMI_KEY_GROUP;

	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;
		/* AP/IBSS mode requires self-key to be groupwise
		 * Otherwise pairwise key must be set */
		if (memcmp(macaddr, arvif->vif->addr, ETH_ALEN))
			arg.key_flags = WMI_KEY_PAIRWISE;
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		if (def_idx)
			arg.key_flags |= WMI_KEY_TX_USAGE;
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		break;
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	case WLAN_CIPHER_SUITE_AES_CMAC:
		/* this one needs to be done in software */
		return 1;
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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, bool def_idx)
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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, def_idx);
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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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	bool def_idx;
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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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		/* set TX_USAGE flag for default key id */
		if (arvif->def_wep_key_idx == i)
			def_idx = true;
		else
			def_idx = false;
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		ret = ath10k_install_key(arvif, arvif->wep_keys[i], SET_KEY,
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					 addr, def_idx);
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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;

	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, false);
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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;

	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 */
		ret = ath10k_install_key(arvif, key, DISABLE_KEY, addr, false);
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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;
}

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

static int ath10k_peer_create(struct ath10k *ar, u32 vdev_id, const u8 *addr)
{
	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);
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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);
}

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

	lockdep_assert_held(&ar->conf_mutex);

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

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

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

	lockdep_assert_held(&ar->data_lock);

	if (!arvif->beacon)
		return;

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

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

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	dev_kfree_skb_any(arvif->beacon);

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

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

	lockdep_assert_held(&ar->data_lock);

	ath10k_mac_vif_beacon_free(arvif);

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

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static inline int ath10k_vdev_setup_sync(struct ath10k *ar)
{
	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;

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	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)
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{
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	struct cfg80211_chan_def *chandef = &ar->chandef;
	struct ieee80211_channel *channel = chandef->chan;
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	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;
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	arg.channel.band_center_freq1 = chandef->center_freq1;
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	/* TODO setup this dynamically, what in case we
	   don't have any vifs? */
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	arg.channel.mode = chan_to_phymode(chandef);
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	arg.channel.chan_radar =
			!!(channel->flags & IEEE80211_CHAN_RADAR);
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	arg.channel.min_power = 0;
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	arg.channel.max_power = channel->max_power * 2;
	arg.channel.max_reg_power = channel->max_reg_power * 2;
	arg.channel.max_antenna_gain = channel->max_antenna_gain * 2;
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	reinit_completion(&ar->vdev_setup_done);

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

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

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

	ar->monitor_vdev_id = vdev_id;

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

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

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static int ath10k_monitor_vdev_stop(struct ath10k *ar)
642 643 644 645 646
{
	int ret = 0;

	lockdep_assert_held(&ar->conf_mutex);

647 648
	ret = ath10k_wmi_vdev_down(ar, ar->monitor_vdev_id);
	if (ret)
649
		ath10k_warn(ar, "failed to put down monitor vdev %i: %d\n",
650
			    ar->monitor_vdev_id, ret);
651

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	reinit_completion(&ar->vdev_setup_done);

654 655
	ret = ath10k_wmi_vdev_stop(ar, ar->monitor_vdev_id);
	if (ret)
656
		ath10k_warn(ar, "failed to to request monitor vdev %i stop: %d\n",
657
			    ar->monitor_vdev_id, ret);
658 659 660

	ret = ath10k_vdev_setup_sync(ar);
	if (ret)
661
		ath10k_warn(ar, "failed to synchronize monitor vdev %i stop: %d\n",
662
			    ar->monitor_vdev_id, ret);
663

664
	ath10k_dbg(ar, ATH10K_DBG_MAC, "mac monitor vdev %i stopped\n",
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		   ar->monitor_vdev_id);
666 667 668
	return ret;
}

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static int ath10k_monitor_vdev_create(struct ath10k *ar)
670 671 672 673 674
{
	int bit, ret = 0;

	lockdep_assert_held(&ar->conf_mutex);

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	if (ar->free_vdev_map == 0) {
676
		ath10k_warn(ar, "failed to find free vdev id for monitor vdev\n");
677 678 679
		return -ENOMEM;
	}

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	bit = __ffs64(ar->free_vdev_map);
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	ar->monitor_vdev_id = bit;
683 684 685 686 687

	ret = ath10k_wmi_vdev_create(ar, ar->monitor_vdev_id,
				     WMI_VDEV_TYPE_MONITOR,
				     0, ar->mac_addr);
	if (ret) {
688
		ath10k_warn(ar, "failed to request monitor vdev %i creation: %d\n",
689
			    ar->monitor_vdev_id, ret);
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		return ret;
691 692
	}

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	ar->free_vdev_map &= ~(1LL << ar->monitor_vdev_id);
694
	ath10k_dbg(ar, ATH10K_DBG_MAC, "mac monitor vdev %d created\n",
695 696 697 698 699
		   ar->monitor_vdev_id);

	return 0;
}

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static int ath10k_monitor_vdev_delete(struct ath10k *ar)
701 702 703 704 705 706 707
{
	int ret = 0;

	lockdep_assert_held(&ar->conf_mutex);

	ret = ath10k_wmi_vdev_delete(ar, ar->monitor_vdev_id);
	if (ret) {
708
		ath10k_warn(ar, "failed to request wmi monitor vdev %i removal: %d\n",
709
			    ar->monitor_vdev_id, ret);
710 711 712
		return ret;
	}

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	ar->free_vdev_map |= 1LL << ar->monitor_vdev_id;
714

715
	ath10k_dbg(ar, ATH10K_DBG_MAC, "mac monitor vdev %d deleted\n",
716 717 718 719
		   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) {
728
		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) {
734
		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;
740
	ath10k_dbg(ar, ATH10K_DBG_MAC, "mac monitor started\n");
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	return 0;
}

745
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);
752
	if (ret) {
753
		ath10k_warn(ar, "failed to stop monitor vdev: %d\n", ret);
754 755
		return ret;
	}
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	ret = ath10k_monitor_vdev_delete(ar);
758
	if (ret) {
759
		ath10k_warn(ar, "failed to delete monitor vdev: %d\n", ret);
760 761
		return ret;
	}
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	ar->monitor_started = false;
764
	ath10k_dbg(ar, ATH10K_DBG_MAC, "mac monitor stopped\n");
765 766 767 768 769 770 771 772 773 774 775 776 777 778 779 780 781 782 783 784 785 786 787

	return 0;
}

static int ath10k_monitor_recalc(struct ath10k *ar)
{
	bool should_start;

	lockdep_assert_held(&ar->conf_mutex);

	should_start = ar->monitor ||
		       ar->filter_flags & FIF_PROMISC_IN_BSS ||
		       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);
788 789

	return ath10k_monitor_stop(ar);
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}

792 793 794 795 796 797 798 799 800 801 802 803 804 805 806 807 808 809 810 811
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;

	if (arvif->use_cts_prot || arvif->num_legacy_stations > 0)
		rts_cts |= SM(WMI_RTSCTS_ENABLED, WMI_RTSCTS_SET);

	if (arvif->num_legacy_stations > 0)
		rts_cts |= SM(WMI_RTSCTS_ACROSS_SW_RETRIES,
			      WMI_RTSCTS_PROFILE);

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

812 813 814 815 816 817 818 819
static int ath10k_start_cac(struct ath10k *ar)
{
	int ret;

	lockdep_assert_held(&ar->conf_mutex);

	set_bit(ATH10K_CAC_RUNNING, &ar->dev_flags);

820
	ret = ath10k_monitor_recalc(ar);
821
	if (ret) {
822
		ath10k_warn(ar, "failed to start monitor (cac): %d\n", ret);
823 824 825 826
		clear_bit(ATH10K_CAC_RUNNING, &ar->dev_flags);
		return ret;
	}

827
	ath10k_dbg(ar, ATH10K_DBG_MAC, "mac cac start monitor vdev %d\n",
828 829 830 831 832 833 834 835 836 837 838 839 840 841
		   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);
843

844
	ath10k_dbg(ar, ATH10K_DBG_MAC, "mac cac finished\n");
845 846 847 848

	return 0;
}

849
static void ath10k_recalc_radar_detection(struct ath10k *ar)
850 851 852 853 854 855 856
{
	int ret;

	lockdep_assert_held(&ar->conf_mutex);

	ath10k_stop_cac(ar);

857
	if (!ar->radar_enabled)
858 859
		return;

860
	if (ar->num_started_vdevs > 0)
861 862 863 864 865 866 867 868 869
		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.
		 */
870
		ath10k_warn(ar, "failed to start CAC: %d\n", ret);
871 872 873 874
		ieee80211_radar_detected(ar->hw);
	}
}

875
static int ath10k_vdev_start_restart(struct ath10k_vif *arvif, bool restart)
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{
	struct ath10k *ar = arvif->ar;
	struct cfg80211_chan_def *chandef = &ar->chandef;
	struct wmi_vdev_start_request_arg arg = {};
	int ret = 0;

	lockdep_assert_held(&ar->conf_mutex);

	reinit_completion(&ar->vdev_setup_done);

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

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

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

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

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

912
	ath10k_dbg(ar, ATH10K_DBG_MAC,
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		   "mac vdev %d start center_freq %d phymode %s\n",
		   arg.vdev_id, arg.channel.freq,
		   ath10k_wmi_phymode_str(arg.channel.mode));

917 918 919 920 921
	if (restart)
		ret = ath10k_wmi_vdev_restart(ar, &arg);
	else
		ret = ath10k_wmi_vdev_start(ar, &arg);

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	if (ret) {
923
		ath10k_warn(ar, "failed to start WMI vdev %i: %d\n",
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			    arg.vdev_id, ret);
		return ret;
	}

	ret = ath10k_vdev_setup_sync(ar);
	if (ret) {
930 931 932
		ath10k_warn(ar,
			    "failed to synchronize setup for vdev %i restart %d: %d\n",
			    arg.vdev_id, restart, ret);
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		return ret;
	}

936 937 938
	ar->num_started_vdevs++;
	ath10k_recalc_radar_detection(ar);

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	return ret;
}

942 943 944 945 946 947 948 949 950 951
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);
}

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

	lockdep_assert_held(&ar->conf_mutex);

	reinit_completion(&ar->vdev_setup_done);

	ret = ath10k_wmi_vdev_stop(ar, arvif->vdev_id);
	if (ret) {
963
		ath10k_warn(ar, "failed to stop WMI vdev %i: %d\n",
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			    arvif->vdev_id, ret);
		return ret;
	}

	ret = ath10k_vdev_setup_sync(ar);
	if (ret) {
970
		ath10k_warn(ar, "failed to synchronize setup for vdev %i stop: %d\n",
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			    arvif->vdev_id, ret);
		return ret;
	}

975 976 977 978 979 980 981
	WARN_ON(ar->num_started_vdevs == 0);

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

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	return ret;
}

985 986 987 988 989 990 991 992 993 994 995 996 997 998 999 1000 1001 1002 1003 1004 1005 1006 1007 1008 1009 1010 1011 1012 1013 1014 1015 1016 1017 1018 1019 1020 1021 1022 1023 1024 1025 1026 1027 1028 1029 1030 1031 1032 1033 1034 1035 1036 1037 1038 1039 1040 1041 1042 1043 1044 1045 1046 1047 1048 1049 1050 1051 1052 1053 1054 1055 1056 1057 1058 1059 1060 1061 1062 1063 1064 1065 1066 1067 1068 1069 1070 1071 1072 1073 1074 1075 1076 1077 1078 1079 1080 1081 1082 1083 1084 1085 1086 1087 1088 1089 1090 1091 1092 1093 1094 1095 1096 1097 1098 1099 1100 1101 1102 1103 1104 1105 1106 1107 1108 1109 1110 1111 1112 1113 1114 1115 1116 1117 1118 1119 1120 1121
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;

	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;

	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;
}

1122
static void ath10k_control_beaconing(struct ath10k_vif *arvif,
1123
				     struct ieee80211_bss_conf *info)
1124
{
1125
	struct ath10k *ar = arvif->ar;
1126 1127
	int ret = 0;

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

1130 1131
	if (!info->enable_beacon) {
		ath10k_vdev_stop(arvif);
1132 1133 1134 1135

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

1136
		spin_lock_bh(&arvif->ar->data_lock);
1137
		ath10k_mac_vif_beacon_free(arvif);
1138 1139
		spin_unlock_bh(&arvif->ar->data_lock);

1140 1141 1142 1143 1144 1145 1146 1147 1148
		return;
	}

	arvif->tx_seq_no = 0x1000;

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

1149
	arvif->aid = 0;
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Kalle Valo 已提交
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	ether_addr_copy(arvif->bssid, info->bssid);
1151 1152 1153

	ret = ath10k_wmi_vdev_up(arvif->ar, arvif->vdev_id, arvif->aid,
				 arvif->bssid);
1154
	if (ret) {
1155
		ath10k_warn(ar, "failed to bring up vdev %d: %i\n",
1156
			    arvif->vdev_id, ret);
1157
		ath10k_vdev_stop(arvif);
1158 1159
		return;
	}
1160 1161 1162 1163

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

1164
	ath10k_dbg(ar, ATH10K_DBG_MAC, "mac vdev %d up\n", arvif->vdev_id);
1165 1166 1167 1168 1169 1170
}

static void ath10k_control_ibss(struct ath10k_vif *arvif,
				struct ieee80211_bss_conf *info,
				const u8 self_peer[ETH_ALEN])
{
1171
	struct ath10k *ar = arvif->ar;
1172
	u32 vdev_param;
1173 1174
	int ret = 0;

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

1177 1178 1179
	if (!info->ibss_joined) {
		ret = ath10k_peer_delete(arvif->ar, arvif->vdev_id, self_peer);
		if (ret)
1180
			ath10k_warn(ar, "failed to delete IBSS self peer %pM for vdev %d: %d\n",
1181 1182
				    self_peer, arvif->vdev_id, ret);

1183
		if (is_zero_ether_addr(arvif->bssid))
1184 1185
			return;

1186
		eth_zero_addr(arvif->bssid);
1187 1188 1189 1190 1191 1192

		return;
	}

	ret = ath10k_peer_create(arvif->ar, arvif->vdev_id, self_peer);
	if (ret) {
1193
		ath10k_warn(ar, "failed to create IBSS self peer %pM for vdev %d: %d\n",
1194 1195 1196 1197
			    self_peer, arvif->vdev_id, ret);
		return;
	}

1198 1199
	vdev_param = arvif->ar->wmi.vdev_param->atim_window;
	ret = ath10k_wmi_vdev_set_param(arvif->ar, arvif->vdev_id, vdev_param,
1200 1201
					ATH10K_DEFAULT_ATIM);
	if (ret)
1202
		ath10k_warn(ar, "failed to set IBSS ATIM for vdev %d: %d\n",
1203 1204 1205
			    arvif->vdev_id, ret);
}

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

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

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

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

	return 0;
}

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

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

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

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

	return 0;
}

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static int ath10k_mac_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;
}

1271
static int ath10k_mac_vif_setup_ps(struct ath10k_vif *arvif)
1272
{
1273
	struct ath10k *ar = arvif->ar;
1274
	struct ieee80211_vif *vif = arvif->vif;
1275
	struct ieee80211_conf *conf = &ar->hw->conf;
1276 1277 1278
	enum wmi_sta_powersave_param param;
	enum wmi_sta_ps_mode psmode;
	int ret;
1279
	int ps_timeout;
1280
	bool enable_ps;
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	lockdep_assert_held(&arvif->ar->conf_mutex);

1284 1285
	if (arvif->vif->type != NL80211_IFTYPE_STATION)
		return 0;
1286

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	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) {
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		psmode = WMI_STA_PS_MODE_ENABLED;
		param = WMI_STA_PS_PARAM_INACTIVITY_TIME;

1301 1302 1303 1304 1305 1306 1307
		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;
		}

1308
		ret = ath10k_wmi_set_sta_ps_param(ar, arvif->vdev_id, param,
1309
						  ps_timeout);
1310
		if (ret) {
1311
			ath10k_warn(ar, "failed to set inactivity time for vdev %d: %i\n",
1312
				    arvif->vdev_id, ret);
1313
			return ret;
1314 1315 1316 1317 1318
		}
	} else {
		psmode = WMI_STA_PS_MODE_DISABLED;
	}

1319
	ath10k_dbg(ar, ATH10K_DBG_MAC, "mac vdev %d psmode %s\n",
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		   arvif->vdev_id, psmode ? "enable" : "disable");

1322 1323
	ret = ath10k_wmi_set_psmode(ar, arvif->vdev_id, psmode);
	if (ret) {
1324
		ath10k_warn(ar, "failed to set PS Mode %d for vdev %d: %d\n",
1325
			    psmode, arvif->vdev_id, ret);
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		return ret;
	}

	return 0;
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}

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

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

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

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

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

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

	return 0;
}

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

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

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

1385
static void ath10k_peer_assoc_h_basic(struct ath10k *ar,
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				      struct ieee80211_vif *vif,
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				      struct ieee80211_sta *sta,
				      struct wmi_peer_assoc_complete_arg *arg)
{
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	struct ath10k_vif *arvif = ath10k_vif_to_arvif(vif);

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	lockdep_assert_held(&ar->conf_mutex);

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	ether_addr_copy(arg->addr, sta->addr);
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	arg->vdev_id = arvif->vdev_id;
	arg->peer_aid = sta->aid;
	arg->peer_flags |= WMI_PEER_AUTH;
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	arg->peer_listen_intval = ath10k_peer_assoc_h_listen_intval(ar, vif);
1399
	arg->peer_num_spatial_streams = 1;
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	arg->peer_caps = vif->bss_conf.assoc_capability;
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}

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

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	lockdep_assert_held(&ar->conf_mutex);

1414
	bss = cfg80211_get_bss(ar->hw->wiphy, ar->hw->conf.chandef.chan,
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			       info->bssid, NULL, 0, IEEE80211_BSS_TYPE_ANY,
			       IEEE80211_PRIVACY_ANY);
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	if (bss) {
		const struct cfg80211_bss_ies *ies;

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

		ies = rcu_dereference(bss->ies);

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

	/* FIXME: base on RSN IE/WPA IE is a correct idea? */
	if (rsnie || wpaie) {
1435
		ath10k_dbg(ar, ATH10K_DBG_WMI, "%s: rsn ie found\n", __func__);
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		arg->peer_flags |= WMI_PEER_NEED_PTK_4_WAY;
	}

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

static void ath10k_peer_assoc_h_rates(struct ath10k *ar,
				      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;
	int i;

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	lockdep_assert_held(&ar->conf_mutex);

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	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;

		rateset->rates[rateset->num_rates] = rates->hw_value;
		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;
1478
	u32 stbc;
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	lockdep_assert_held(&ar->conf_mutex);

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	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;

1531 1532 1533 1534 1535 1536 1537 1538 1539 1540 1541 1542 1543 1544 1545 1546 1547
	/*
	 * 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;
	}
1548

1549
	ath10k_dbg(ar, ATH10K_DBG_MAC, "mac ht peer %pM mcs cnt %d nss %d\n",
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		   arg->addr,
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		   arg->peer_ht_rates.num_rates,
		   arg->peer_num_spatial_streams);
}

1555 1556 1557
static int ath10k_peer_assoc_qos_ap(struct ath10k *ar,
				    struct ath10k_vif *arvif,
				    struct ieee80211_sta *sta)
1558 1559 1560
{
	u32 uapsd = 0;
	u32 max_sp = 0;
1561
	int ret = 0;
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	lockdep_assert_held(&ar->conf_mutex);

1565
	if (sta->wme && sta->uapsd_queues) {
1566
		ath10k_dbg(ar, ATH10K_DBG_MAC, "mac uapsd_queues 0x%x max_sp %d\n",
1567 1568 1569 1570 1571 1572 1573 1574 1575 1576 1577 1578 1579 1580 1581 1582 1583 1584
			   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;

1585 1586 1587 1588 1589
		ret = ath10k_wmi_set_ap_ps_param(ar, arvif->vdev_id,
						 sta->addr,
						 WMI_AP_PS_PEER_PARAM_UAPSD,
						 uapsd);
		if (ret) {
1590
			ath10k_warn(ar, "failed to set ap ps peer param uapsd for vdev %i: %d\n",
1591
				    arvif->vdev_id, ret);
1592 1593
			return ret;
		}
1594

1595 1596 1597 1598 1599
		ret = ath10k_wmi_set_ap_ps_param(ar, arvif->vdev_id,
						 sta->addr,
						 WMI_AP_PS_PEER_PARAM_MAX_SP,
						 max_sp);
		if (ret) {
1600
			ath10k_warn(ar, "failed to set ap ps peer param max sp for vdev %i: %d\n",
1601
				    arvif->vdev_id, ret);
1602 1603
			return ret;
		}
1604 1605 1606 1607 1608

		/* 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 */
1609
		ret = ath10k_wmi_set_ap_ps_param(ar, arvif->vdev_id, sta->addr,
1610 1611
						 WMI_AP_PS_PEER_PARAM_AGEOUT_TIME,
						 10);
1612
		if (ret) {
1613
			ath10k_warn(ar, "failed to set ap ps peer param ageout time for vdev %i: %d\n",
1614
				    arvif->vdev_id, ret);
1615 1616
			return ret;
		}
1617 1618
	}

1619
	return 0;
1620 1621 1622 1623 1624 1625 1626
}

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;
1627
	u8 ampdu_factor;
1628 1629 1630 1631 1632

	if (!vht_cap->vht_supported)
		return;

	arg->peer_flags |= WMI_PEER_VHT;
1633 1634 1635 1636

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

1637 1638
	arg->peer_vht_caps = vht_cap->cap;

1639 1640 1641 1642 1643 1644 1645 1646 1647 1648 1649 1650
	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);

1651 1652 1653 1654 1655 1656 1657 1658 1659 1660 1661 1662
	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);

1663
	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);
1665 1666 1667
}

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

1674 1675
	switch (arvif->vdev_type) {
	case WMI_VDEV_TYPE_AP:
1676 1677 1678 1679 1680 1681 1682
		if (sta->wme)
			arg->peer_flags |= WMI_PEER_QOS;

		if (sta->wme && sta->uapsd_queues) {
			arg->peer_flags |= WMI_PEER_APSD;
			arg->peer_rate_caps |= WMI_RC_UAPSD_FLAG;
		}
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		break;
	case WMI_VDEV_TYPE_STA:
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		if (vif->bss_conf.qos)
1686
			arg->peer_flags |= WMI_PEER_QOS;
1687
		break;
1688 1689 1690 1691
	case WMI_VDEV_TYPE_IBSS:
		if (sta->wme)
			arg->peer_flags |= WMI_PEER_QOS;
		break;
1692 1693 1694
	default:
		break;
	}
1695 1696 1697

	ath10k_dbg(ar, ATH10K_DBG_MAC, "mac peer %pM qos %d\n",
		   sta->addr, !!(arg->peer_flags & WMI_PEER_QOS));
1698 1699
}

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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;
}

1706
static void ath10k_peer_assoc_h_phymode(struct ath10k *ar,
M
Michal Kazior 已提交
1707
					struct ieee80211_vif *vif,
1708 1709 1710 1711 1712 1713 1714
					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:
1715 1716 1717 1718 1719 1720
		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) {
1721 1722 1723 1724
			if (sta->bandwidth == IEEE80211_STA_RX_BW_40)
				phymode = MODE_11NG_HT40;
			else
				phymode = MODE_11NG_HT20;
M
Michal Kazior 已提交
1725
		} else if (ath10k_mac_sta_has_11g_rates(sta)) {
1726
			phymode = MODE_11G;
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1727 1728
		} else {
			phymode = MODE_11B;
1729 1730 1731 1732
		}

		break;
	case IEEE80211_BAND_5GHZ:
1733 1734 1735 1736 1737 1738 1739 1740 1741 1742 1743
		/*
		 * 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) {
1744 1745 1746 1747 1748 1749 1750 1751 1752 1753 1754 1755 1756
			if (sta->bandwidth == IEEE80211_STA_RX_BW_40)
				phymode = MODE_11NA_HT40;
			else
				phymode = MODE_11NA_HT20;
		} else {
			phymode = MODE_11A;
		}

		break;
	default:
		break;
	}

1757
	ath10k_dbg(ar, ATH10K_DBG_MAC, "mac peer %pM phymode %s\n",
K
Kalle Valo 已提交
1758
		   sta->addr, ath10k_wmi_phymode_str(phymode));
K
Kalle Valo 已提交
1759

1760 1761 1762 1763
	arg->peer_phymode = phymode;
	WARN_ON(phymode == MODE_UNKNOWN);
}

1764
static int ath10k_peer_assoc_prepare(struct ath10k *ar,
M
Michal Kazior 已提交
1765
				     struct ieee80211_vif *vif,
1766 1767
				     struct ieee80211_sta *sta,
				     struct wmi_peer_assoc_complete_arg *arg)
1768
{
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1769 1770
	lockdep_assert_held(&ar->conf_mutex);

1771
	memset(arg, 0, sizeof(*arg));
1772

M
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1773 1774
	ath10k_peer_assoc_h_basic(ar, vif, sta, arg);
	ath10k_peer_assoc_h_crypto(ar, vif, arg);
1775 1776 1777
	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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1778 1779
	ath10k_peer_assoc_h_qos(ar, vif, sta, arg);
	ath10k_peer_assoc_h_phymode(ar, vif, sta, arg);
1780

1781
	return 0;
1782 1783
}

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1784 1785 1786 1787 1788 1789 1790 1791 1792 1793 1794 1795 1796 1797 1798 1799 1800 1801 1802 1803 1804 1805 1806 1807 1808 1809 1810
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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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 1860 1861 1862 1863 1864 1865 1866 1867 1868 1869 1870 1871 1872
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;
}

1873 1874 1875 1876 1877 1878 1879
/* can be called only in mac80211 callbacks due to `key_count` usage */
static void ath10k_bss_assoc(struct ieee80211_hw *hw,
			     struct ieee80211_vif *vif,
			     struct ieee80211_bss_conf *bss_conf)
{
	struct ath10k *ar = hw->priv;
	struct ath10k_vif *arvif = ath10k_vif_to_arvif(vif);
M
Michal Kazior 已提交
1880
	struct ieee80211_sta_ht_cap ht_cap;
M
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1881
	struct ieee80211_sta_vht_cap vht_cap;
1882
	struct wmi_peer_assoc_complete_arg peer_arg;
1883 1884 1885
	struct ieee80211_sta *ap_sta;
	int ret;

M
Michal Kazior 已提交
1886 1887
	lockdep_assert_held(&ar->conf_mutex);

1888 1889 1890
	ath10k_dbg(ar, ATH10K_DBG_MAC, "mac vdev %i assoc bssid %pM aid %d\n",
		   arvif->vdev_id, arvif->bssid, arvif->aid);

1891 1892 1893 1894
	rcu_read_lock();

	ap_sta = ieee80211_find_sta(vif, bss_conf->bssid);
	if (!ap_sta) {
1895
		ath10k_warn(ar, "failed to find station entry for bss %pM vdev %i\n",
1896
			    bss_conf->bssid, arvif->vdev_id);
1897 1898 1899 1900
		rcu_read_unlock();
		return;
	}

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1901 1902 1903
	/* ap_sta must be accessed only within rcu section which must be left
	 * before calling ath10k_setup_peer_smps() which might sleep. */
	ht_cap = ap_sta->ht_cap;
M
Michal Kazior 已提交
1904
	vht_cap = ap_sta->vht_cap;
M
Michal Kazior 已提交
1905

M
Michal Kazior 已提交
1906
	ret = ath10k_peer_assoc_prepare(ar, vif, ap_sta, &peer_arg);
1907
	if (ret) {
1908
		ath10k_warn(ar, "failed to prepare peer assoc for %pM vdev %i: %d\n",
1909
			    bss_conf->bssid, arvif->vdev_id, ret);
1910 1911 1912 1913 1914 1915
		rcu_read_unlock();
		return;
	}

	rcu_read_unlock();

1916 1917
	ret = ath10k_wmi_peer_assoc(ar, &peer_arg);
	if (ret) {
1918
		ath10k_warn(ar, "failed to run peer assoc for %pM vdev %i: %d\n",
1919
			    bss_conf->bssid, arvif->vdev_id, ret);
1920 1921 1922
		return;
	}

M
Michal Kazior 已提交
1923 1924
	ret = ath10k_setup_peer_smps(ar, arvif, bss_conf->bssid, &ht_cap);
	if (ret) {
1925
		ath10k_warn(ar, "failed to setup peer SMPS for vdev %i: %d\n",
1926
			    arvif->vdev_id, ret);
M
Michal Kazior 已提交
1927 1928 1929
		return;
	}

M
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1930 1931 1932 1933 1934 1935 1936
	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;
	}

1937
	ath10k_dbg(ar, ATH10K_DBG_MAC,
K
Kalle Valo 已提交
1938 1939 1940
		   "mac vdev %d up (associated) bssid %pM aid %d\n",
		   arvif->vdev_id, bss_conf->bssid, bss_conf->aid);

1941 1942
	WARN_ON(arvif->is_up);

1943
	arvif->aid = bss_conf->aid;
K
Kalle Valo 已提交
1944
	ether_addr_copy(arvif->bssid, bss_conf->bssid);
1945 1946 1947

	ret = ath10k_wmi_vdev_up(ar, arvif->vdev_id, arvif->aid, arvif->bssid);
	if (ret) {
1948
		ath10k_warn(ar, "failed to set vdev %d up: %d\n",
1949
			    arvif->vdev_id, ret);
1950 1951 1952 1953
		return;
	}

	arvif->is_up = true;
1954 1955 1956 1957 1958 1959 1960 1961 1962 1963 1964 1965

	/* 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;
	}
1966 1967 1968 1969 1970 1971 1972
}

static void ath10k_bss_disassoc(struct ieee80211_hw *hw,
				struct ieee80211_vif *vif)
{
	struct ath10k *ar = hw->priv;
	struct ath10k_vif *arvif = ath10k_vif_to_arvif(vif);
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Michal Kazior 已提交
1973
	struct ieee80211_sta_vht_cap vht_cap = {};
1974 1975
	int ret;

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1976 1977
	lockdep_assert_held(&ar->conf_mutex);

1978 1979
	ath10k_dbg(ar, ATH10K_DBG_MAC, "mac vdev %i disassoc bssid %pM\n",
		   arvif->vdev_id, arvif->bssid);
K
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1980

1981
	ret = ath10k_wmi_vdev_down(ar, arvif->vdev_id);
1982 1983 1984
	if (ret)
		ath10k_warn(ar, "faield to down vdev %i: %d\n",
			    arvif->vdev_id, ret);
1985

1986 1987
	arvif->def_wep_key_idx = -1;

M
Michal Kazior 已提交
1988 1989 1990 1991 1992 1993 1994
	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;
	}

1995
	arvif->is_up = false;
1996 1997
}

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1998 1999 2000 2001
static int ath10k_station_assoc(struct ath10k *ar,
				struct ieee80211_vif *vif,
				struct ieee80211_sta *sta,
				bool reassoc)
2002
{
M
Michal Kazior 已提交
2003
	struct ath10k_vif *arvif = ath10k_vif_to_arvif(vif);
2004
	struct wmi_peer_assoc_complete_arg peer_arg;
2005 2006
	int ret = 0;

M
Michal Kazior 已提交
2007 2008
	lockdep_assert_held(&ar->conf_mutex);

M
Michal Kazior 已提交
2009
	ret = ath10k_peer_assoc_prepare(ar, vif, sta, &peer_arg);
2010
	if (ret) {
2011
		ath10k_warn(ar, "failed to prepare WMI peer assoc for %pM vdev %i: %i\n",
2012
			    sta->addr, arvif->vdev_id, ret);
2013 2014 2015
		return ret;
	}

2016
	peer_arg.peer_reassoc = reassoc;
2017
	ret = ath10k_wmi_peer_assoc(ar, &peer_arg);
2018
	if (ret) {
2019
		ath10k_warn(ar, "failed to run peer assoc for STA %pM vdev %i: %d\n",
2020
			    sta->addr, arvif->vdev_id, ret);
2021 2022 2023
		return ret;
	}

2024 2025 2026 2027 2028 2029
	/* 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);
2030
		if (ret) {
2031
			ath10k_warn(ar, "failed to setup peer SMPS for vdev %d: %d\n",
2032 2033 2034 2035
				    arvif->vdev_id, ret);
			return ret;
		}

2036 2037 2038 2039 2040 2041
		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;
		}
2042

2043 2044 2045 2046 2047 2048 2049 2050 2051 2052
		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;
			}
		}

2053 2054 2055 2056 2057 2058 2059 2060
		/* 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;
			}
2061
		}
2062 2063
	}

2064 2065 2066
	return ret;
}

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Michal Kazior 已提交
2067 2068
static int ath10k_station_disassoc(struct ath10k *ar,
				   struct ieee80211_vif *vif,
2069 2070
				   struct ieee80211_sta *sta)
{
M
Michal Kazior 已提交
2071
	struct ath10k_vif *arvif = ath10k_vif_to_arvif(vif);
2072 2073
	int ret = 0;

M
Michal Kazior 已提交
2074 2075
	lockdep_assert_held(&ar->conf_mutex);

2076 2077 2078 2079
	if (!sta->wme) {
		arvif->num_legacy_stations--;
		ret = ath10k_recalc_rtscts_prot(arvif);
		if (ret) {
2080
			ath10k_warn(ar, "failed to recalculate rts/cts prot for vdev %d: %d\n",
2081 2082 2083 2084 2085
				    arvif->vdev_id, ret);
			return ret;
		}
	}

2086 2087
	ret = ath10k_clear_peer_keys(arvif, sta->addr);
	if (ret) {
2088
		ath10k_warn(ar, "failed to clear all peer wep keys for vdev %i: %d\n",
2089
			    arvif->vdev_id, ret);
2090 2091 2092 2093 2094 2095 2096 2097 2098 2099 2100 2101 2102 2103 2104 2105 2106 2107 2108 2109 2110 2111 2112
		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
2113 2114
	lockdep_assert_held(&ar->conf_mutex);

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 2140 2141 2142 2143 2144 2145 2146 2147 2148 2149 2150
	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 =
2151
				!(channel->flags & IEEE80211_CHAN_NO_IR);
2152 2153 2154 2155

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

2156 2157 2158
			ch->chan_radar =
				!!(channel->flags & IEEE80211_CHAN_RADAR);

2159
			passive = channel->flags & IEEE80211_CHAN_NO_IR;
2160 2161 2162
			ch->passive = passive;

			ch->freq = channel->center_freq;
2163
			ch->band_center_freq1 = channel->center_freq;
2164
			ch->min_power = 0;
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Michal Kazior 已提交
2165 2166 2167
			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;
2168 2169 2170 2171 2172 2173 2174 2175 2176 2177 2178 2179 2180
			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;

2181
			ath10k_dbg(ar, ATH10K_DBG_WMI,
K
Kalle Valo 已提交
2182 2183
				   "mac channel [%zd/%d] freq %d maxpower %d regpower %d antenna %d mode %d\n",
				    ch - arg.channels, arg.n_channels,
2184 2185 2186 2187 2188 2189 2190 2191 2192 2193 2194 2195 2196
				   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;
}

2197 2198 2199 2200 2201 2202 2203 2204 2205 2206 2207 2208 2209 2210 2211 2212
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;
}

2213
static void ath10k_regd_update(struct ath10k *ar)
2214 2215 2216
{
	struct reg_dmn_pair_mapping *regpair;
	int ret;
2217 2218
	enum wmi_dfs_region wmi_dfs_reg;
	enum nl80211_dfs_regions nl_dfs_reg;
2219

2220
	lockdep_assert_held(&ar->conf_mutex);
2221 2222 2223

	ret = ath10k_update_channel_list(ar);
	if (ret)
2224
		ath10k_warn(ar, "failed to update channel list: %d\n", ret);
2225 2226

	regpair = ar->ath_common.regulatory.regpair;
2227

2228 2229 2230 2231 2232 2233 2234
	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;
	}

2235 2236 2237
	/* Target allows setting up per-band regdomain but ath_common provides
	 * a combined one only */
	ret = ath10k_wmi_pdev_set_regdomain(ar,
2238 2239 2240
					    regpair->reg_domain,
					    regpair->reg_domain, /* 2ghz */
					    regpair->reg_domain, /* 5ghz */
2241
					    regpair->reg_2ghz_ctl,
2242 2243
					    regpair->reg_5ghz_ctl,
					    wmi_dfs_reg);
2244
	if (ret)
2245
		ath10k_warn(ar, "failed to set pdev regdomain: %d\n", ret);
2246
}
M
Michal Kazior 已提交
2247

2248 2249 2250 2251 2252
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
2253
	bool result;
2254 2255 2256

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

J
Janusz Dziedzic 已提交
2257
	if (config_enabled(CONFIG_ATH10K_DFS_CERTIFIED) && ar->dfs_detector) {
2258
		ath10k_dbg(ar, ATH10K_DBG_REGULATORY, "dfs region 0x%x\n",
J
Janusz Dziedzic 已提交
2259 2260 2261 2262
			   request->dfs_region);
		result = ar->dfs_detector->set_dfs_domain(ar->dfs_detector,
							  request->dfs_region);
		if (!result)
2263
			ath10k_warn(ar, "DFS region 0x%X not supported, will trigger radar for every pulse\n",
J
Janusz Dziedzic 已提交
2264 2265 2266
				    request->dfs_region);
	}

2267 2268 2269
	mutex_lock(&ar->conf_mutex);
	if (ar->state == ATH10K_STATE_ON)
		ath10k_regd_update(ar);
M
Michal Kazior 已提交
2270
	mutex_unlock(&ar->conf_mutex);
2271 2272 2273 2274 2275 2276
}

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

2277 2278 2279 2280 2281 2282 2283 2284 2285 2286 2287 2288 2289 2290
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;
}

2291
static u8 ath10k_tx_h_get_vdev_id(struct ath10k *ar, struct ieee80211_vif *vif)
2292
{
2293 2294
	if (vif)
		return ath10k_vif_to_arvif(vif)->vdev_id;
2295

M
Michal Kazior 已提交
2296
	if (ar->monitor_started)
2297 2298
		return ar->monitor_vdev_id;

2299
	ath10k_warn(ar, "failed to resolve vdev id\n");
2300 2301 2302
	return 0;
}

M
Michal Kazior 已提交
2303 2304
/* HTT Tx uses Native Wifi tx mode which expects 802.11 frames without QoS
 * Control in the header.
2305
 */
M
Michal Kazior 已提交
2306
static void ath10k_tx_h_nwifi(struct ieee80211_hw *hw, struct sk_buff *skb)
2307 2308
{
	struct ieee80211_hdr *hdr = (void *)skb->data;
2309
	struct ath10k_skb_cb *cb = ATH10K_SKB_CB(skb);
2310 2311 2312 2313 2314 2315
	u8 *qos_ctl;

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

	qos_ctl = ieee80211_get_qos_ctl(hdr);
2316 2317 2318
	memmove(skb->data + IEEE80211_QOS_CTL_LEN,
		skb->data, (void *)qos_ctl - (void *)skb->data);
	skb_pull(skb, IEEE80211_QOS_CTL_LEN);
2319 2320 2321 2322 2323 2324

	/* Fw/Hw generates a corrupted QoS Control Field for QoS NullFunc
	 * frames. Powersave is handled by the fw/hw so QoS NyllFunc frames are
	 * used only for CQM purposes (e.g. hostapd station keepalive ping) so
	 * it is safe to downgrade to NullFunc.
	 */
M
Michal Kazior 已提交
2325
	hdr = (void *)skb->data;
2326 2327 2328 2329
	if (ieee80211_is_qos_nullfunc(hdr->frame_control)) {
		hdr->frame_control &= ~__cpu_to_le16(IEEE80211_STYPE_QOS_DATA);
		cb->htt.tid = HTT_DATA_TX_EXT_TID_NON_QOS_MCAST_BCAST;
	}
2330 2331
}

M
Michal Kazior 已提交
2332 2333 2334
static void ath10k_tx_h_add_p2p_noa_ie(struct ath10k *ar,
				       struct ieee80211_vif *vif,
				       struct sk_buff *skb)
2335 2336 2337 2338 2339 2340 2341 2342 2343 2344 2345 2346 2347 2348 2349 2350 2351 2352 2353 2354 2355
{
	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
2356 2357 2358 2359 2360 2361 2362 2363 2364 2365 2366 2367
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);
}

2368 2369 2370
static void ath10k_tx_htt(struct ath10k *ar, struct sk_buff *skb)
{
	struct ieee80211_hdr *hdr = (struct ieee80211_hdr *)skb->data;
2371
	int ret = 0;
2372

M
Michal Kazior 已提交
2373 2374 2375 2376 2377 2378
	if (ar->htt.target_version_major >= 3) {
		/* Since HTT 3.0 there is no separate mgmt tx command */
		ret = ath10k_htt_tx(&ar->htt, skb);
		goto exit;
	}

2379 2380 2381 2382 2383
	if (ieee80211_is_mgmt(hdr->frame_control)) {
		if (test_bit(ATH10K_FW_FEATURE_HAS_WMI_MGMT_TX,
			     ar->fw_features)) {
			if (skb_queue_len(&ar->wmi_mgmt_tx_queue) >=
			    ATH10K_MAX_NUM_MGMT_PENDING) {
2384
				ath10k_warn(ar, "reached WMI management transmit queue limit\n");
2385 2386 2387 2388 2389 2390 2391 2392 2393 2394 2395 2396
				ret = -EBUSY;
				goto exit;
			}

			skb_queue_tail(&ar->wmi_mgmt_tx_queue, skb);
			ieee80211_queue_work(ar->hw, &ar->wmi_mgmt_tx_work);
		} else {
			ret = ath10k_htt_mgmt_tx(&ar->htt, skb);
		}
	} else if (!test_bit(ATH10K_FW_FEATURE_HAS_WMI_MGMT_TX,
			     ar->fw_features) &&
		   ieee80211_is_nullfunc(hdr->frame_control)) {
2397 2398
		/* FW does not report tx status properly for NullFunc frames
		 * unless they are sent through mgmt tx path. mac80211 sends
2399 2400
		 * those frames when it detects link/beacon loss and depends
		 * on the tx status to be correct. */
2401
		ret = ath10k_htt_mgmt_tx(&ar->htt, skb);
2402
	} else {
2403
		ret = ath10k_htt_tx(&ar->htt, skb);
2404
	}
2405

M
Michal Kazior 已提交
2406
exit:
2407
	if (ret) {
2408 2409
		ath10k_warn(ar, "failed to transmit packet, dropping: %d\n",
			    ret);
2410 2411 2412 2413 2414 2415 2416 2417 2418 2419 2420 2421 2422 2423 2424 2425 2426 2427 2428 2429 2430 2431 2432 2433 2434 2435 2436 2437 2438 2439 2440 2441 2442 2443 2444 2445 2446 2447 2448 2449 2450
		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);

2451
		ath10k_dbg(ar, ATH10K_DBG_MAC, "mac offchannel skb %p\n",
2452 2453 2454 2455
			   skb);

		hdr = (struct ieee80211_hdr *)skb->data;
		peer_addr = ieee80211_get_DA(hdr);
2456
		vdev_id = ATH10K_SKB_CB(skb)->vdev_id;
2457 2458 2459 2460 2461 2462

		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
2463
			/* FIXME: should this use ath10k_warn()? */
2464
			ath10k_dbg(ar, ATH10K_DBG_MAC, "peer %pM on vdev %d already present\n",
2465 2466 2467 2468 2469
				   peer_addr, vdev_id);

		if (!peer) {
			ret = ath10k_peer_create(ar, vdev_id, peer_addr);
			if (ret)
2470
				ath10k_warn(ar, "failed to create peer %pM on vdev %d: %d\n",
2471 2472 2473 2474
					    peer_addr, vdev_id, ret);
		}

		spin_lock_bh(&ar->data_lock);
2475
		reinit_completion(&ar->offchan_tx_completed);
2476 2477 2478 2479 2480 2481 2482
		ar->offchan_tx_skb = skb;
		spin_unlock_bh(&ar->data_lock);

		ath10k_tx_htt(ar, skb);

		ret = wait_for_completion_timeout(&ar->offchan_tx_completed,
						  3 * HZ);
2483
		if (ret == 0)
2484
			ath10k_warn(ar, "timed out waiting for offchannel skb %p\n",
2485 2486 2487 2488 2489
				    skb);

		if (!peer) {
			ret = ath10k_peer_delete(ar, vdev_id, peer_addr);
			if (ret)
2490
				ath10k_warn(ar, "failed to delete peer %pM on vdev %d: %d\n",
2491 2492 2493 2494 2495 2496 2497
					    peer_addr, vdev_id, ret);
		}

		mutex_unlock(&ar->conf_mutex);
	}
}

2498 2499 2500 2501 2502 2503 2504 2505 2506 2507 2508 2509 2510 2511 2512 2513 2514 2515 2516 2517 2518 2519 2520 2521 2522
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);
2523
		if (ret) {
2524
			ath10k_warn(ar, "failed to transmit management frame via WMI: %d\n",
2525
				    ret);
2526 2527
			ieee80211_free_txskb(ar->hw, skb);
		}
2528 2529 2530
	}
}

2531 2532 2533 2534
/************/
/* Scanning */
/************/

2535
void __ath10k_scan_finish(struct ath10k *ar)
2536
{
2537
	lockdep_assert_held(&ar->data_lock);
2538

2539 2540 2541 2542 2543 2544
	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);
2545
		/* fall through */
2546 2547
	case ATH10K_SCAN_ABORTING:
		if (!ar->scan.is_roc)
2548 2549 2550 2551 2552 2553 2554 2555 2556 2557 2558
			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;
2559
	}
2560
}
2561

2562 2563 2564 2565
void ath10k_scan_finish(struct ath10k *ar)
{
	spin_lock_bh(&ar->data_lock);
	__ath10k_scan_finish(ar);
2566 2567 2568
	spin_unlock_bh(&ar->data_lock);
}

2569
static int ath10k_scan_stop(struct ath10k *ar)
2570 2571 2572 2573 2574 2575 2576 2577 2578 2579 2580 2581
{
	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) {
2582
		ath10k_warn(ar, "failed to stop wmi scan: %d\n", ret);
2583
		goto out;
2584 2585 2586
	}

	ret = wait_for_completion_timeout(&ar->scan.completed, 3*HZ);
2587
	if (ret == 0) {
2588
		ath10k_warn(ar, "failed to receive scan abortion completion: timed out\n");
2589 2590 2591 2592
		ret = -ETIMEDOUT;
	} else if (ret > 0) {
		ret = 0;
	}
2593

2594 2595 2596 2597 2598 2599 2600 2601 2602 2603 2604 2605 2606 2607 2608 2609 2610 2611 2612 2613 2614
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);
2615 2616

	spin_lock_bh(&ar->data_lock);
2617 2618 2619 2620 2621 2622 2623 2624 2625

	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:
2626
		ath10k_warn(ar, "refusing scan abortion due to invalid scan state: %s (%d)\n",
2627 2628 2629 2630 2631 2632 2633 2634 2635
			    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)
2636
			ath10k_warn(ar, "failed to abort scan: %d\n", ret);
2637 2638 2639

		spin_lock_bh(&ar->data_lock);
		break;
2640
	}
2641

2642
	spin_unlock_bh(&ar->data_lock);
2643
}
2644

2645 2646 2647 2648 2649 2650 2651 2652
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);
2653 2654 2655 2656 2657 2658 2659 2660 2661 2662 2663 2664 2665 2666 2667
}

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) {
2668 2669
		ret = ath10k_scan_stop(ar);
		if (ret)
2670
			ath10k_warn(ar, "failed to stop scan: %d\n", ret);
2671 2672

		return -ETIMEDOUT;
2673 2674
	}

2675 2676 2677 2678 2679 2680 2681 2682 2683 2684 2685
	/* 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);

2686 2687 2688
	/* 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));
2689 2690 2691 2692 2693 2694 2695 2696 2697 2698 2699
	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
2700
	struct ath10k *ar = hw->priv;
2701
	struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
M
Michal Kazior 已提交
2702
	struct ieee80211_vif *vif = info->control.vif;
2703 2704 2705 2706
	struct ieee80211_hdr *hdr = (struct ieee80211_hdr *)skb->data;

	/* We should disable CCK RATE due to P2P */
	if (info->flags & IEEE80211_TX_CTL_NO_CCK_RATE)
2707
		ath10k_dbg(ar, ATH10K_DBG_MAC, "IEEE80211_TX_CTL_NO_CCK_RATE\n");
2708

M
Michal Kazior 已提交
2709 2710
	ATH10K_SKB_CB(skb)->htt.is_offchan = false;
	ATH10K_SKB_CB(skb)->htt.tid = ath10k_tx_h_get_tid(hdr);
2711
	ATH10K_SKB_CB(skb)->vdev_id = ath10k_tx_h_get_vdev_id(ar, vif);
2712

2713
	/* it makes no sense to process injected frames like that */
M
Michal Kazior 已提交
2714 2715 2716 2717
	if (vif && vif->type != NL80211_IFTYPE_MONITOR) {
		ath10k_tx_h_nwifi(hw, skb);
		ath10k_tx_h_add_p2p_noa_ie(ar, vif, skb);
		ath10k_tx_h_seq_no(vif, skb);
2718
	}
2719 2720 2721

	if (info->flags & IEEE80211_TX_CTL_TX_OFFCHAN) {
		spin_lock_bh(&ar->data_lock);
M
Michal Kazior 已提交
2722
		ATH10K_SKB_CB(skb)->htt.freq = ar->scan.roc_freq;
2723
		ATH10K_SKB_CB(skb)->vdev_id = ar->scan.vdev_id;
2724 2725
		spin_unlock_bh(&ar->data_lock);

M
Michal Kazior 已提交
2726 2727 2728
		if (ath10k_mac_need_offchan_tx_work(ar)) {
			ATH10K_SKB_CB(skb)->htt.freq = 0;
			ATH10K_SKB_CB(skb)->htt.is_offchan = true;
2729

M
Michal Kazior 已提交
2730 2731 2732 2733 2734 2735 2736
			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;
		}
2737 2738 2739 2740 2741
	}

	ath10k_tx_htt(ar, skb);
}

2742
/* Must not be called with conf_mutex held as workers can use that also. */
M
Michal Kazior 已提交
2743
void ath10k_drain_tx(struct ath10k *ar)
2744 2745 2746 2747 2748 2749 2750 2751 2752 2753 2754
{
	/* 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);
}

2755
void ath10k_halt(struct ath10k *ar)
2756
{
2757 2758
	struct ath10k_vif *arvif;

2759 2760
	lockdep_assert_held(&ar->conf_mutex);

2761 2762 2763 2764 2765
	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
2766
		ath10k_monitor_stop(ar);
2767 2768

	ar->monitor_started = false;
M
Michal Kazior 已提交
2769

2770
	ath10k_scan_finish(ar);
2771 2772 2773 2774 2775
	ath10k_peer_cleanup_all(ar);
	ath10k_core_stop(ar);
	ath10k_hif_power_down(ar);

	spin_lock_bh(&ar->data_lock);
2776 2777
	list_for_each_entry(arvif, &ar->arvifs, list)
		ath10k_mac_vif_beacon_cleanup(arvif);
2778 2779 2780
	spin_unlock_bh(&ar->data_lock);
}

2781 2782 2783 2784 2785 2786 2787 2788 2789 2790 2791 2792 2793 2794 2795 2796 2797 2798 2799
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;
}

2800 2801 2802 2803 2804 2805 2806 2807 2808 2809 2810 2811 2812
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);
}

2813 2814 2815 2816 2817 2818
static int __ath10k_set_antenna(struct ath10k *ar, u32 tx_ant, u32 rx_ant)
{
	int ret;

	lockdep_assert_held(&ar->conf_mutex);

2819 2820 2821
	ath10k_check_chain_mask(ar, tx_ant, "tx");
	ath10k_check_chain_mask(ar, rx_ant, "rx");

2822 2823 2824 2825 2826 2827 2828 2829 2830 2831
	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) {
2832
		ath10k_warn(ar, "failed to set tx-chainmask: %d, req 0x%x\n",
2833 2834 2835 2836 2837 2838 2839
			    ret, tx_ant);
		return ret;
	}

	ret = ath10k_wmi_pdev_set_param(ar, ar->wmi.pdev_param->rx_chain_mask,
					rx_ant);
	if (ret) {
2840
		ath10k_warn(ar, "failed to set rx-chainmask: %d, req 0x%x\n",
2841 2842 2843 2844 2845 2846 2847 2848 2849 2850 2851 2852 2853 2854 2855 2856 2857 2858
			    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;
}

2859 2860 2861
static int ath10k_start(struct ieee80211_hw *hw)
{
	struct ath10k *ar = hw->priv;
2862
	int ret = 0;
2863

2864 2865 2866 2867 2868 2869 2870
	/*
	 * 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
2871 2872
	mutex_lock(&ar->conf_mutex);

2873 2874 2875 2876 2877 2878 2879 2880 2881 2882 2883 2884
	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);
2885
		ret = -EINVAL;
2886
		goto err;
K
Kalle Valo 已提交
2887 2888 2889
	case ATH10K_STATE_UTF:
		ret = -EBUSY;
		goto err;
2890 2891 2892 2893
	}

	ret = ath10k_hif_power_up(ar);
	if (ret) {
2894
		ath10k_err(ar, "Could not init hif: %d\n", ret);
2895
		goto err_off;
2896 2897
	}

K
Kalle Valo 已提交
2898
	ret = ath10k_core_start(ar, ATH10K_FIRMWARE_MODE_NORMAL);
2899
	if (ret) {
2900
		ath10k_err(ar, "Could not init core: %d\n", ret);
2901
		goto err_power_down;
2902 2903
	}

2904
	ret = ath10k_wmi_pdev_set_param(ar, ar->wmi.pdev_param->pmf_qos, 1);
2905
	if (ret) {
2906
		ath10k_warn(ar, "failed to enable PMF QOS: %d\n", ret);
2907 2908
		goto err_core_stop;
	}
2909

2910
	ret = ath10k_wmi_pdev_set_param(ar, ar->wmi.pdev_param->dynamic_bw, 1);
2911
	if (ret) {
2912
		ath10k_warn(ar, "failed to enable dynamic BW: %d\n", ret);
2913 2914
		goto err_core_stop;
	}
2915

2916 2917 2918 2919
	if (ar->cfg_tx_chainmask)
		__ath10k_set_antenna(ar, ar->cfg_tx_chainmask,
				     ar->cfg_rx_chainmask);

2920 2921 2922 2923 2924 2925 2926 2927 2928 2929 2930 2931
	/*
	 * 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) {
2932
		ath10k_warn(ar, "failed to set arp ac override parameter: %d\n",
2933
			    ret);
2934
		goto err_core_stop;
2935 2936
	}

2937
	ar->num_started_vdevs = 0;
2938 2939
	ath10k_regd_update(ar);

2940 2941
	ath10k_spectral_start(ar);

2942 2943 2944 2945 2946 2947 2948 2949 2950 2951 2952 2953 2954
	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
2955
	mutex_unlock(&ar->conf_mutex);
2956
	return ret;
2957 2958 2959 2960 2961 2962
}

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

2963 2964
	ath10k_drain_tx(ar);

M
Michal Kazior 已提交
2965
	mutex_lock(&ar->conf_mutex);
2966
	if (ar->state != ATH10K_STATE_OFF) {
2967
		ath10k_halt(ar);
2968 2969
		ar->state = ATH10K_STATE_OFF;
	}
M
Michal Kazior 已提交
2970 2971
	mutex_unlock(&ar->conf_mutex);

2972
	cancel_delayed_work_sync(&ar->scan.timeout);
2973
	cancel_work_sync(&ar->restart_work);
2974 2975
}

2976
static int ath10k_config_ps(struct ath10k *ar)
2977
{
2978 2979
	struct ath10k_vif *arvif;
	int ret = 0;
2980 2981 2982

	lockdep_assert_held(&ar->conf_mutex);

2983 2984 2985
	list_for_each_entry(arvif, &ar->arvifs, list) {
		ret = ath10k_mac_vif_setup_ps(arvif);
		if (ret) {
2986
			ath10k_warn(ar, "failed to setup powersave: %d\n", ret);
2987 2988 2989
			break;
		}
	}
2990

2991
	return ret;
2992 2993
}

2994 2995 2996 2997 2998 2999 3000 3001 3002 3003 3004 3005 3006 3007 3008 3009 3010 3011 3012 3013 3014 3015 3016 3017 3018 3019 3020 3021 3022 3023
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);

3024
	ath10k_dbg(ar, ATH10K_DBG_MAC,
3025 3026 3027 3028 3029 3030 3031 3032
		   "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
3033
	if (ar->monitor_started)
3034
		ath10k_monitor_stop(ar);
3035 3036 3037 3038 3039

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

3040 3041 3042
		if (!arvif->is_up)
			continue;

3043 3044 3045
		if (arvif->vdev_type == WMI_VDEV_TYPE_MONITOR)
			continue;

3046
		ret = ath10k_wmi_vdev_down(ar, arvif->vdev_id);
3047
		if (ret) {
3048
			ath10k_warn(ar, "failed to down vdev %d: %d\n",
3049 3050 3051 3052 3053
				    arvif->vdev_id, ret);
			continue;
		}
	}

3054
	/* all vdevs are downed now - attempt to restart and re-up them */
3055 3056 3057 3058 3059 3060 3061 3062

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

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

3063
		ret = ath10k_vdev_restart(arvif);
3064
		if (ret) {
3065
			ath10k_warn(ar, "failed to restart vdev %d: %d\n",
3066 3067 3068 3069 3070 3071 3072 3073 3074 3075
				    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) {
3076
			ath10k_warn(ar, "failed to bring vdev up %d: %d\n",
3077 3078 3079 3080 3081
				    arvif->vdev_id, ret);
			continue;
		}
	}

3082
	ath10k_monitor_recalc(ar);
3083 3084
}

3085 3086 3087 3088 3089 3090 3091 3092 3093 3094 3095 3096 3097 3098 3099 3100 3101 3102 3103 3104 3105 3106 3107 3108 3109 3110 3111 3112 3113 3114 3115 3116 3117 3118 3119 3120 3121 3122 3123 3124 3125 3126 3127 3128 3129 3130 3131 3132 3133 3134 3135 3136 3137 3138 3139 3140 3141
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;
}

3142 3143
static int ath10k_config(struct ieee80211_hw *hw, u32 changed)
{
3144 3145 3146 3147 3148 3149 3150
	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) {
3151
		ath10k_dbg(ar, ATH10K_DBG_MAC,
3152
			   "mac config channel %dMHz flags 0x%x radar %d\n",
3153
			   conf->chandef.chan->center_freq,
3154 3155
			   conf->chandef.chan->flags,
			   conf->radar_enabled);
3156

3157 3158 3159
		spin_lock_bh(&ar->data_lock);
		ar->rx_channel = conf->chandef.chan;
		spin_unlock_bh(&ar->data_lock);
3160

3161 3162
		ar->radar_enabled = conf->radar_enabled;
		ath10k_recalc_radar_detection(ar);
3163 3164 3165 3166 3167

		if (!cfg80211_chandef_identical(&ar->chandef, &conf->chandef)) {
			ar->chandef = conf->chandef;
			ath10k_config_chan(ar);
		}
3168 3169
	}

3170 3171
	if (changed & IEEE80211_CONF_CHANGE_PS)
		ath10k_config_ps(ar);
3172 3173

	if (changed & IEEE80211_CONF_CHANGE_MONITOR) {
3174 3175 3176 3177
		ar->monitor = conf->flags & IEEE80211_CONF_MONITOR;
		ret = ath10k_monitor_recalc(ar);
		if (ret)
			ath10k_warn(ar, "failed to recalc monitor: %d\n", ret);
3178 3179 3180 3181 3182 3183
	}

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

3184 3185 3186 3187 3188 3189 3190 3191 3192 3193 3194
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;
}

3195 3196 3197 3198 3199 3200 3201 3202 3203 3204 3205 3206 3207 3208
/*
 * 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;
3209
	u32 value;
3210
	int bit;
3211
	u32 vdev_param;
3212

3213 3214
	vif->driver_flags |= IEEE80211_VIF_SUPPORTS_UAPSD;

3215 3216
	mutex_lock(&ar->conf_mutex);

3217 3218
	memset(arvif, 0, sizeof(*arvif));

3219 3220 3221
	arvif->ar = ar;
	arvif->vif = vif;

3222
	INIT_LIST_HEAD(&arvif->list);
3223

B
Ben Greear 已提交
3224
	if (ar->free_vdev_map == 0) {
3225
		ath10k_warn(ar, "Free vdev map is empty, no more interfaces allowed.\n");
3226
		ret = -EBUSY;
3227
		goto err;
3228
	}
B
Ben Greear 已提交
3229
	bit = __ffs64(ar->free_vdev_map);
3230

B
Ben Greear 已提交
3231 3232
	ath10k_dbg(ar, ATH10K_DBG_MAC, "mac create vdev %i map %llx\n",
		   bit, ar->free_vdev_map);
3233

B
Ben Greear 已提交
3234
	arvif->vdev_id = bit;
3235 3236 3237
	arvif->vdev_subtype = WMI_VDEV_SUBTYPE_NONE;

	switch (vif->type) {
M
Michal Kazior 已提交
3238 3239 3240 3241
	case NL80211_IFTYPE_P2P_DEVICE:
		arvif->vdev_type = WMI_VDEV_TYPE_STA;
		arvif->vdev_subtype = WMI_VDEV_SUBTYPE_P2P_DEVICE;
		break;
3242 3243 3244 3245 3246 3247 3248 3249 3250 3251 3252 3253 3254 3255 3256 3257 3258 3259 3260 3261 3262 3263 3264
	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;
	}

3265 3266 3267 3268 3269 3270 3271 3272 3273 3274 3275 3276 3277 3278 3279 3280 3281 3282 3283 3284 3285
	/* 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,
3286
							GFP_ATOMIC);
3287 3288 3289 3290 3291 3292 3293 3294 3295 3296 3297
		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");
3298 3299 3300 3301

	ret = ath10k_wmi_vdev_create(ar, arvif->vdev_id, arvif->vdev_type,
				     arvif->vdev_subtype, vif->addr);
	if (ret) {
3302
		ath10k_warn(ar, "failed to create WMI vdev %i: %d\n",
3303
			    arvif->vdev_id, ret);
3304
		goto err;
3305 3306
	}

B
Ben Greear 已提交
3307
	ar->free_vdev_map &= ~(1LL << arvif->vdev_id);
M
Michal Kazior 已提交
3308
	list_add(&arvif->list, &ar->arvifs);
3309

M
Michal Kazior 已提交
3310 3311 3312 3313
	/* 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);
3314
	if (ret) {
M
Michal Kazior 已提交
3315
		ath10k_warn(ar, "failed to disable keepalive on vdev %i: %d\n",
3316
			    arvif->vdev_id, ret);
3317 3318
		goto err_vdev_delete;
	}
3319

3320
	arvif->def_wep_key_idx = -1;
3321

3322 3323
	vdev_param = ar->wmi.vdev_param->tx_encap_type;
	ret = ath10k_wmi_vdev_set_param(ar, arvif->vdev_id, vdev_param,
3324
					ATH10K_HW_TXRX_NATIVE_WIFI);
3325
	/* 10.X firmware does not support this VDEV parameter. Do not warn */
3326
	if (ret && ret != -EOPNOTSUPP) {
3327
		ath10k_warn(ar, "failed to set vdev %i TX encapsulation: %d\n",
3328
			    arvif->vdev_id, ret);
3329 3330
		goto err_vdev_delete;
	}
3331

3332 3333 3334 3335 3336 3337 3338 3339 3340 3341 3342 3343 3344 3345
	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;
		}
	}

3346 3347 3348
	if (arvif->vdev_type == WMI_VDEV_TYPE_AP) {
		ret = ath10k_peer_create(ar, arvif->vdev_id, vif->addr);
		if (ret) {
3349
			ath10k_warn(ar, "failed to create vdev %i peer for AP: %d\n",
3350
				    arvif->vdev_id, ret);
3351
			goto err_vdev_delete;
3352
		}
3353

3354 3355
		ret = ath10k_mac_set_kickout(arvif);
		if (ret) {
3356
			ath10k_warn(ar, "failed to set vdev %i kickout parameters: %d\n",
3357
				    arvif->vdev_id, ret);
3358 3359
			goto err_peer_delete;
		}
3360 3361 3362 3363 3364 3365 3366
	}

	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);
3367
		if (ret) {
3368
			ath10k_warn(ar, "failed to set vdev %i RX wake policy: %d\n",
3369
				    arvif->vdev_id, ret);
3370 3371
			goto err_peer_delete;
		}
3372

M
Michal Kazior 已提交
3373
		ret = ath10k_mac_vif_recalc_ps_wake_threshold(arvif);
3374
		if (ret) {
M
Michal Kazior 已提交
3375
			ath10k_warn(ar, "failed to recalc ps wake threshold on vdev %i: %d\n",
3376
				    arvif->vdev_id, ret);
3377 3378
			goto err_peer_delete;
		}
3379

M
Michal Kazior 已提交
3380
		ret = ath10k_mac_vif_recalc_ps_poll_count(arvif);
3381
		if (ret) {
M
Michal Kazior 已提交
3382
			ath10k_warn(ar, "failed to recalc ps poll count on vdev %i: %d\n",
3383
				    arvif->vdev_id, ret);
3384 3385
			goto err_peer_delete;
		}
3386 3387
	}

3388
	ret = ath10k_mac_set_rts(arvif, ar->hw->wiphy->rts_threshold);
3389
	if (ret) {
3390
		ath10k_warn(ar, "failed to set rts threshold for vdev %d: %d\n",
3391
			    arvif->vdev_id, ret);
3392 3393
		goto err_peer_delete;
	}
3394

3395
	ret = ath10k_mac_set_frag(arvif, ar->hw->wiphy->frag_threshold);
3396
	if (ret) {
3397
		ath10k_warn(ar, "failed to set frag threshold for vdev %d: %d\n",
3398
			    arvif->vdev_id, ret);
3399 3400
		goto err_peer_delete;
	}
3401

3402 3403 3404 3405 3406 3407 3408
	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;
	}

3409
	mutex_unlock(&ar->conf_mutex);
3410 3411 3412 3413 3414 3415 3416 3417
	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
3418
	ar->free_vdev_map |= 1LL << arvif->vdev_id;
M
Michal Kazior 已提交
3419
	list_del(&arvif->list);
3420 3421

err:
3422 3423 3424 3425 3426 3427
	if (arvif->beacon_buf) {
		dma_free_coherent(ar->dev, IEEE80211_MAX_FRAME_LEN,
				  arvif->beacon_buf, arvif->beacon_paddr);
		arvif->beacon_buf = NULL;
	}

3428 3429
	mutex_unlock(&ar->conf_mutex);

3430 3431 3432 3433 3434 3435 3436 3437 3438 3439
	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;

3440 3441
	mutex_lock(&ar->conf_mutex);

3442
	spin_lock_bh(&ar->data_lock);
3443
	ath10k_mac_vif_beacon_cleanup(arvif);
3444 3445
	spin_unlock_bh(&ar->data_lock);

3446 3447
	ret = ath10k_spectral_vif_stop(arvif);
	if (ret)
3448
		ath10k_warn(ar, "failed to stop spectral for vdev %i: %d\n",
3449 3450
			    arvif->vdev_id, ret);

B
Ben Greear 已提交
3451
	ar->free_vdev_map |= 1LL << arvif->vdev_id;
M
Michal Kazior 已提交
3452
	list_del(&arvif->list);
3453 3454

	if (arvif->vdev_type == WMI_VDEV_TYPE_AP) {
3455 3456
		ret = ath10k_wmi_peer_delete(arvif->ar, arvif->vdev_id,
					     vif->addr);
3457
		if (ret)
3458
			ath10k_warn(ar, "failed to submit AP self-peer removal on vdev %i: %d\n",
3459
				    arvif->vdev_id, ret);
3460 3461 3462 3463

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

3464
	ath10k_dbg(ar, ATH10K_DBG_MAC, "mac vdev %i delete (remove interface)\n",
K
Kalle Valo 已提交
3465 3466
		   arvif->vdev_id);

3467 3468
	ret = ath10k_wmi_vdev_delete(ar, arvif->vdev_id);
	if (ret)
3469
		ath10k_warn(ar, "failed to delete WMI vdev %i: %d\n",
3470
			    arvif->vdev_id, ret);
3471

3472 3473 3474 3475 3476 3477 3478 3479 3480 3481 3482 3483 3484 3485 3486
	/* 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);
	}

3487 3488 3489 3490 3491 3492 3493 3494 3495 3496 3497 3498 3499 3500 3501 3502 3503 3504 3505 3506 3507 3508 3509 3510 3511 3512 3513 3514 3515 3516 3517 3518
	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;

3519 3520 3521
	ret = ath10k_monitor_recalc(ar);
	if (ret)
		ath10k_warn(ar, "failed to recalc montior: %d\n", ret);
3522 3523 3524 3525 3526 3527 3528 3529 3530 3531 3532 3533

	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;
3534
	u32 vdev_param, pdev_param, slottime, preamble;
3535 3536 3537 3538 3539 3540 3541 3542

	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;
3543 3544
		vdev_param = ar->wmi.vdev_param->beacon_interval;
		ret = ath10k_wmi_vdev_set_param(ar, arvif->vdev_id, vdev_param,
3545
						arvif->beacon_interval);
3546
		ath10k_dbg(ar, ATH10K_DBG_MAC,
K
Kalle Valo 已提交
3547 3548 3549
			   "mac vdev %d beacon_interval %d\n",
			   arvif->vdev_id, arvif->beacon_interval);

3550
		if (ret)
3551
			ath10k_warn(ar, "failed to set beacon interval for vdev %d: %i\n",
3552
				    arvif->vdev_id, ret);
3553 3554 3555
	}

	if (changed & BSS_CHANGED_BEACON) {
3556
		ath10k_dbg(ar, ATH10K_DBG_MAC,
K
Kalle Valo 已提交
3557 3558 3559
			   "vdev %d set beacon tx mode to staggered\n",
			   arvif->vdev_id);

3560 3561
		pdev_param = ar->wmi.pdev_param->beacon_tx_mode;
		ret = ath10k_wmi_pdev_set_param(ar, pdev_param,
3562 3563
						WMI_BEACON_STAGGERED_MODE);
		if (ret)
3564
			ath10k_warn(ar, "failed to set beacon mode for vdev %d: %i\n",
3565
				    arvif->vdev_id, ret);
3566 3567 3568 3569 3570 3571 3572 3573 3574 3575 3576 3577

		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);
3578 3579
	}

3580
	if (changed & (BSS_CHANGED_BEACON_INFO | BSS_CHANGED_BEACON)) {
3581 3582
		arvif->dtim_period = info->dtim_period;

3583
		ath10k_dbg(ar, ATH10K_DBG_MAC,
K
Kalle Valo 已提交
3584 3585 3586
			   "mac vdev %d dtim_period %d\n",
			   arvif->vdev_id, arvif->dtim_period);

3587 3588
		vdev_param = ar->wmi.vdev_param->dtim_period;
		ret = ath10k_wmi_vdev_set_param(ar, arvif->vdev_id, vdev_param,
3589 3590
						arvif->dtim_period);
		if (ret)
3591
			ath10k_warn(ar, "failed to set dtim period for vdev %d: %i\n",
3592
				    arvif->vdev_id, ret);
3593 3594 3595 3596 3597 3598 3599 3600 3601 3602
	}

	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;
	}

3603 3604
	if (changed & BSS_CHANGED_BSSID && !is_zero_ether_addr(info->bssid))
		ether_addr_copy(arvif->bssid, info->bssid);
3605 3606 3607 3608 3609

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

	if (changed & BSS_CHANGED_ERP_CTS_PROT) {
3610
		arvif->use_cts_prot = info->use_cts_prot;
3611
		ath10k_dbg(ar, ATH10K_DBG_MAC, "mac vdev %d cts_prot %d\n",
3612
			   arvif->vdev_id, info->use_cts_prot);
K
Kalle Valo 已提交
3613

3614
		ret = ath10k_recalc_rtscts_prot(arvif);
3615
		if (ret)
3616
			ath10k_warn(ar, "failed to recalculate rts/cts prot for vdev %d: %d\n",
3617
				    arvif->vdev_id, ret);
3618 3619 3620 3621 3622 3623 3624 3625 3626
	}

	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 */

3627
		ath10k_dbg(ar, ATH10K_DBG_MAC, "mac vdev %d slot_time %d\n",
K
Kalle Valo 已提交
3628 3629
			   arvif->vdev_id, slottime);

3630 3631
		vdev_param = ar->wmi.vdev_param->slot_time;
		ret = ath10k_wmi_vdev_set_param(ar, arvif->vdev_id, vdev_param,
3632 3633
						slottime);
		if (ret)
3634
			ath10k_warn(ar, "failed to set erp slot for vdev %d: %i\n",
3635
				    arvif->vdev_id, ret);
3636 3637 3638 3639 3640 3641 3642 3643
	}

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

3644
		ath10k_dbg(ar, ATH10K_DBG_MAC,
K
Kalle Valo 已提交
3645 3646 3647
			   "mac vdev %d preamble %dn",
			   arvif->vdev_id, preamble);

3648 3649
		vdev_param = ar->wmi.vdev_param->preamble;
		ret = ath10k_wmi_vdev_set_param(ar, arvif->vdev_id, vdev_param,
3650 3651
						preamble);
		if (ret)
3652
			ath10k_warn(ar, "failed to set preamble for vdev %d: %i\n",
3653
				    arvif->vdev_id, ret);
3654 3655 3656
	}

	if (changed & BSS_CHANGED_ASSOC) {
3657 3658 3659 3660 3661 3662 3663
		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);
3664
			ath10k_bss_assoc(hw, vif, info);
3665
			ath10k_monitor_recalc(ar);
3666 3667
		} else {
			ath10k_bss_disassoc(hw, vif);
3668
		}
3669 3670
	}

3671 3672 3673 3674 3675 3676 3677 3678 3679 3680
	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);
	}

3681
	if (changed & BSS_CHANGED_PS) {
3682 3683 3684
		arvif->ps = vif->bss_conf.ps;

		ret = ath10k_config_ps(ar);
3685 3686 3687 3688 3689
		if (ret)
			ath10k_warn(ar, "failed to setup ps on vdev %i: %d\n",
				    arvif->vdev_id, ret);
	}

3690 3691 3692 3693 3694
	mutex_unlock(&ar->conf_mutex);
}

static int ath10k_hw_scan(struct ieee80211_hw *hw,
			  struct ieee80211_vif *vif,
3695
			  struct ieee80211_scan_request *hw_req)
3696 3697 3698
{
	struct ath10k *ar = hw->priv;
	struct ath10k_vif *arvif = ath10k_vif_to_arvif(vif);
3699
	struct cfg80211_scan_request *req = &hw_req->req;
3700 3701 3702 3703 3704 3705 3706
	struct wmi_start_scan_arg arg;
	int ret = 0;
	int i;

	mutex_lock(&ar->conf_mutex);

	spin_lock_bh(&ar->data_lock);
3707 3708 3709 3710 3711 3712 3713 3714 3715 3716 3717 3718
	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:
3719
		ret = -EBUSY;
3720
		break;
3721 3722 3723
	}
	spin_unlock_bh(&ar->data_lock);

3724 3725 3726
	if (ret)
		goto exit;

3727 3728 3729 3730 3731 3732 3733 3734 3735 3736 3737 3738 3739 3740 3741 3742 3743 3744 3745
	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;
		}
3746 3747
	} else {
		arg.scan_ctrl_flags |= WMI_SCAN_FLAG_PASSIVE;
3748 3749 3750 3751 3752 3753 3754 3755 3756 3757
	}

	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) {
3758
		ath10k_warn(ar, "failed to start hw scan: %d\n", ret);
3759
		spin_lock_bh(&ar->data_lock);
3760
		ar->scan.state = ATH10K_SCAN_IDLE;
3761 3762 3763 3764 3765 3766 3767 3768 3769 3770 3771 3772 3773 3774
		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);
3775
	ath10k_scan_abort(ar);
3776
	mutex_unlock(&ar->conf_mutex);
3777 3778

	cancel_delayed_work_sync(&ar->scan.timeout);
3779 3780
}

3781 3782 3783 3784 3785 3786 3787 3788 3789 3790 3791 3792 3793 3794 3795 3796 3797 3798 3799 3800 3801 3802 3803 3804 3805 3806 3807 3808 3809 3810 3811 3812 3813 3814
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)
3815
		ath10k_warn(ar, "failed to set vdev %i group key as default key: %d\n",
3816
			    arvif->vdev_id, ret);
3817 3818
}

3819 3820 3821 3822 3823 3824 3825 3826 3827 3828
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;
3829
	bool def_idx = false;
3830 3831 3832 3833 3834 3835 3836 3837 3838 3839 3840 3841 3842 3843 3844 3845 3846 3847 3848 3849 3850 3851 3852 3853
	int ret = 0;

	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) {
3854
			ath10k_warn(ar, "failed to install key for non-existent peer %pM\n",
3855 3856 3857 3858 3859 3860 3861 3862 3863 3864 3865 3866 3867 3868 3869 3870 3871 3872 3873 3874
				    peer_addr);
			ret = -EOPNOTSUPP;
			goto exit;
		} else {
			/* if the peer doesn't exist there is no key to disable
			 * anymore */
			goto exit;
		}
	}

	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);
	}

3875 3876 3877 3878 3879 3880 3881 3882
	/* set TX_USAGE flag for all the keys incase of dot1x-WEP. For
	 * static WEP, do not set this flag for the keys whose key id
	 * is  greater than default key id.
	 */
	if (arvif->def_wep_key_idx == -1)
		def_idx = true;

	ret = ath10k_install_key(arvif, key, cmd, peer_addr, def_idx);
3883
	if (ret) {
3884
		ath10k_warn(ar, "failed to install key for vdev %i peer %pM: %d\n",
3885
			    arvif->vdev_id, peer_addr, ret);
3886 3887 3888
		goto exit;
	}

3889 3890
	ath10k_set_key_h_def_keyidx(ar, arvif, cmd, key);

3891 3892 3893 3894 3895 3896 3897 3898
	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 */
3899
		ath10k_warn(ar, "Peer %pM disappeared!\n", peer_addr);
3900 3901 3902 3903 3904 3905 3906
	spin_unlock_bh(&ar->data_lock);

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

3907 3908 3909 3910 3911 3912 3913 3914 3915 3916 3917 3918 3919 3920 3921 3922 3923 3924 3925 3926 3927 3928 3929 3930 3931 3932 3933 3934 3935 3936 3937 3938 3939
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;
unlock:
	mutex_unlock(&arvif->ar->conf_mutex);
}

3940 3941 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
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) {
3968
		ath10k_dbg(ar, ATH10K_DBG_MAC, "mac update sta %pM peer bw %d\n",
3969 3970 3971 3972 3973
			   sta->addr, bw);

		err = ath10k_wmi_peer_set_param(ar, arvif->vdev_id, sta->addr,
						WMI_PEER_CHAN_WIDTH, bw);
		if (err)
3974
			ath10k_warn(ar, "failed to update STA %pM peer bw %d: %d\n",
3975 3976 3977 3978
				    sta->addr, bw, err);
	}

	if (changed & IEEE80211_RC_NSS_CHANGED) {
3979
		ath10k_dbg(ar, ATH10K_DBG_MAC, "mac update sta %pM nss %d\n",
3980 3981 3982 3983 3984
			   sta->addr, nss);

		err = ath10k_wmi_peer_set_param(ar, arvif->vdev_id, sta->addr,
						WMI_PEER_NSS, nss);
		if (err)
3985
			ath10k_warn(ar, "failed to update STA %pM nss %d: %d\n",
3986 3987 3988 3989
				    sta->addr, nss, err);
	}

	if (changed & IEEE80211_RC_SMPS_CHANGED) {
3990
		ath10k_dbg(ar, ATH10K_DBG_MAC, "mac update sta %pM smps %d\n",
3991 3992 3993 3994 3995
			   sta->addr, smps);

		err = ath10k_wmi_peer_set_param(ar, arvif->vdev_id, sta->addr,
						WMI_PEER_SMPS_STATE, smps);
		if (err)
3996
			ath10k_warn(ar, "failed to update STA %pM smps %d: %d\n",
3997 3998 3999
				    sta->addr, smps, err);
	}

4000 4001 4002
	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",
4003 4004
			   sta->addr);

M
Michal Kazior 已提交
4005
		err = ath10k_station_assoc(ar, arvif->vif, sta, true);
4006
		if (err)
4007
			ath10k_warn(ar, "failed to reassociate station: %pM\n",
4008 4009 4010
				    sta->addr);
	}

4011 4012 4013
	mutex_unlock(&ar->conf_mutex);
}

4014 4015 4016 4017 4018 4019 4020 4021 4022 4023 4024 4025 4026 4027 4028 4029 4030 4031 4032 4033 4034 4035 4036 4037 4038 4039 4040 4041 4042 4043 4044
static int ath10k_mac_inc_num_stations(struct ath10k_vif *arvif)
{
	struct ath10k *ar = arvif->ar;

	lockdep_assert_held(&ar->conf_mutex);

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

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

	ar->num_stations++;

	return 0;
}

static void ath10k_mac_dec_num_stations(struct ath10k_vif *arvif)
{
	struct ath10k *ar = arvif->ar;

	lockdep_assert_held(&ar->conf_mutex);

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

	ar->num_stations--;
}

4045 4046 4047 4048 4049 4050 4051 4052
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);
4053
	struct ath10k_sta *arsta = (struct ath10k_sta *)sta->drv_priv;
4054 4055
	int ret = 0;

4056 4057 4058 4059 4060 4061 4062
	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);
	}

4063 4064 4065 4066 4067
	/* 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);

4068 4069 4070
	mutex_lock(&ar->conf_mutex);

	if (old_state == IEEE80211_STA_NOTEXIST &&
4071
	    new_state == IEEE80211_STA_NONE) {
4072 4073 4074
		/*
		 * New station addition.
		 */
4075 4076 4077 4078 4079
		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);
4080

4081 4082 4083 4084
		ret = ath10k_mac_inc_num_stations(arvif);
		if (ret) {
			ath10k_warn(ar, "refusing to associate station: too many connected already (%d)\n",
				    ar->max_num_stations);
4085 4086 4087
			goto exit;
		}

4088
		ret = ath10k_peer_create(ar, arvif->vdev_id, sta->addr);
M
Michal Kazior 已提交
4089
		if (ret) {
4090
			ath10k_warn(ar, "failed to add peer %pM for vdev %d when adding a new sta: %i\n",
4091
				    sta->addr, arvif->vdev_id, ret);
4092
			ath10k_mac_dec_num_stations(arvif);
M
Michal Kazior 已提交
4093 4094
			goto exit;
		}
4095 4096 4097 4098 4099 4100 4101 4102 4103 4104

		if (vif->type == NL80211_IFTYPE_STATION) {
			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));
4105
				ath10k_mac_dec_num_stations(arvif);
4106 4107 4108 4109 4110
				goto exit;
			}

			arvif->is_started = true;
		}
4111 4112 4113 4114 4115
	} else if ((old_state == IEEE80211_STA_NONE &&
		    new_state == IEEE80211_STA_NOTEXIST)) {
		/*
		 * Existing station deletion.
		 */
4116
		ath10k_dbg(ar, ATH10K_DBG_MAC,
K
Kalle Valo 已提交
4117 4118
			   "mac vdev %d peer delete %pM (sta gone)\n",
			   arvif->vdev_id, sta->addr);
4119 4120 4121 4122 4123 4124 4125 4126 4127 4128 4129 4130

		if (vif->type == NL80211_IFTYPE_STATION) {
			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;
		}

4131 4132
		ret = ath10k_peer_delete(ar, arvif->vdev_id, sta->addr);
		if (ret)
4133
			ath10k_warn(ar, "failed to delete peer %pM for vdev %d: %i\n",
4134
				    sta->addr, arvif->vdev_id, ret);
4135

4136
		ath10k_mac_dec_num_stations(arvif);
4137 4138 4139 4140 4141 4142 4143
	} else if (old_state == IEEE80211_STA_AUTH &&
		   new_state == IEEE80211_STA_ASSOC &&
		   (vif->type == NL80211_IFTYPE_AP ||
		    vif->type == NL80211_IFTYPE_ADHOC)) {
		/*
		 * New association.
		 */
4144
		ath10k_dbg(ar, ATH10K_DBG_MAC, "mac sta %pM associated\n",
K
Kalle Valo 已提交
4145 4146
			   sta->addr);

M
Michal Kazior 已提交
4147
		ret = ath10k_station_assoc(ar, vif, sta, false);
4148
		if (ret)
4149
			ath10k_warn(ar, "failed to associate station %pM for vdev %i: %i\n",
4150
				    sta->addr, arvif->vdev_id, ret);
4151 4152 4153 4154 4155 4156 4157
	} else if (old_state == IEEE80211_STA_ASSOC &&
		   new_state == IEEE80211_STA_AUTH &&
		   (vif->type == NL80211_IFTYPE_AP ||
		    vif->type == NL80211_IFTYPE_ADHOC)) {
		/*
		 * Disassociation.
		 */
4158
		ath10k_dbg(ar, ATH10K_DBG_MAC, "mac sta %pM disassociated\n",
K
Kalle Valo 已提交
4159 4160
			   sta->addr);

M
Michal Kazior 已提交
4161
		ret = ath10k_station_disassoc(ar, vif, sta);
4162
		if (ret)
4163
			ath10k_warn(ar, "failed to disassociate station: %pM vdev %i: %i\n",
4164
				    sta->addr, arvif->vdev_id, ret);
4165
	}
4166
exit:
4167 4168 4169 4170 4171
	mutex_unlock(&ar->conf_mutex);
	return ret;
}

static int ath10k_conf_tx_uapsd(struct ath10k *ar, struct ieee80211_vif *vif,
4172
				u16 ac, bool enable)
4173 4174
{
	struct ath10k_vif *arvif = ath10k_vif_to_arvif(vif);
4175 4176
	struct wmi_sta_uapsd_auto_trig_arg arg = {};
	u32 prio = 0, acc = 0;
4177 4178 4179
	u32 value = 0;
	int ret = 0;

M
Michal Kazior 已提交
4180 4181
	lockdep_assert_held(&ar->conf_mutex);

4182 4183 4184 4185 4186 4187 4188
	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;
4189 4190
		prio = 7;
		acc = 3;
4191 4192 4193 4194
		break;
	case IEEE80211_AC_VI:
		value = WMI_STA_PS_UAPSD_AC2_DELIVERY_EN |
			WMI_STA_PS_UAPSD_AC2_TRIGGER_EN;
4195 4196
		prio = 5;
		acc = 2;
4197 4198 4199 4200
		break;
	case IEEE80211_AC_BE:
		value = WMI_STA_PS_UAPSD_AC1_DELIVERY_EN |
			WMI_STA_PS_UAPSD_AC1_TRIGGER_EN;
4201 4202
		prio = 2;
		acc = 1;
4203 4204 4205 4206
		break;
	case IEEE80211_AC_BK:
		value = WMI_STA_PS_UAPSD_AC0_DELIVERY_EN |
			WMI_STA_PS_UAPSD_AC0_TRIGGER_EN;
4207 4208
		prio = 0;
		acc = 0;
4209 4210 4211 4212 4213 4214 4215 4216 4217 4218 4219 4220
		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) {
4221
		ath10k_warn(ar, "failed to set uapsd params: %d\n", ret);
4222 4223 4224 4225 4226 4227 4228 4229 4230 4231 4232 4233
		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)
4234
		ath10k_warn(ar, "failed to set rx wake param: %d\n", ret);
4235

M
Michal Kazior 已提交
4236 4237 4238 4239 4240 4241 4242 4243 4244 4245 4246 4247 4248 4249
	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;
	}

4250 4251 4252 4253 4254 4255 4256 4257 4258 4259 4260 4261 4262 4263 4264 4265 4266 4267 4268 4269 4270 4271 4272
	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;
		}
	}

4273 4274 4275 4276 4277 4278 4279 4280 4281
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;
4282
	struct ath10k_vif *arvif = ath10k_vif_to_arvif(vif);
4283 4284 4285 4286 4287 4288 4289
	struct wmi_wmm_params_arg *p = NULL;
	int ret;

	mutex_lock(&ar->conf_mutex);

	switch (ac) {
	case IEEE80211_AC_VO:
4290
		p = &arvif->wmm_params.ac_vo;
4291 4292
		break;
	case IEEE80211_AC_VI:
4293
		p = &arvif->wmm_params.ac_vi;
4294 4295
		break;
	case IEEE80211_AC_BE:
4296
		p = &arvif->wmm_params.ac_be;
4297 4298
		break;
	case IEEE80211_AC_BK:
4299
		p = &arvif->wmm_params.ac_bk;
4300 4301 4302 4303 4304 4305 4306 4307 4308 4309 4310 4311 4312 4313 4314 4315 4316 4317 4318
		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;

4319 4320 4321 4322 4323 4324 4325 4326 4327 4328 4329 4330 4331 4332 4333 4334 4335
	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;
		}
4336 4337 4338 4339
	}

	ret = ath10k_conf_tx_uapsd(ar, vif, ac, params->uapsd);
	if (ret)
4340
		ath10k_warn(ar, "failed to set sta uapsd: %d\n", ret);
4341 4342 4343 4344 4345 4346 4347 4348 4349 4350 4351 4352 4353 4354 4355 4356 4357

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;
4358
	int ret = 0;
4359 4360 4361 4362

	mutex_lock(&ar->conf_mutex);

	spin_lock_bh(&ar->data_lock);
4363 4364 4365 4366 4367 4368 4369 4370 4371 4372 4373 4374 4375 4376
	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:
4377
		ret = -EBUSY;
4378
		break;
4379 4380 4381
	}
	spin_unlock_bh(&ar->data_lock);

4382 4383 4384
	if (ret)
		goto exit;

M
Michal Kazior 已提交
4385 4386
	duration = max(duration, WMI_SCAN_CHAN_MIN_TIME_MSEC);

4387 4388 4389 4390 4391 4392 4393 4394 4395 4396 4397 4398 4399 4400
	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) {
4401
		ath10k_warn(ar, "failed to start roc scan: %d\n", ret);
4402
		spin_lock_bh(&ar->data_lock);
4403
		ar->scan.state = ATH10K_SCAN_IDLE;
4404 4405 4406 4407 4408 4409
		spin_unlock_bh(&ar->data_lock);
		goto exit;
	}

	ret = wait_for_completion_timeout(&ar->scan.on_channel, 3*HZ);
	if (ret == 0) {
4410
		ath10k_warn(ar, "failed to switch to channel for roc scan\n");
4411 4412 4413

		ret = ath10k_scan_stop(ar);
		if (ret)
4414
			ath10k_warn(ar, "failed to stop scan: %d\n", ret);
4415

4416 4417 4418 4419 4420 4421 4422 4423 4424 4425 4426 4427 4428 4429 4430
		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);
4431
	ath10k_scan_abort(ar);
4432 4433
	mutex_unlock(&ar->conf_mutex);

4434 4435
	cancel_delayed_work_sync(&ar->scan.timeout);

4436 4437 4438 4439 4440 4441 4442 4443
	return 0;
}

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

4444 4445 4446 4447 4448
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
4449

4450
	mutex_lock(&ar->conf_mutex);
4451
	list_for_each_entry(arvif, &ar->arvifs, list) {
4452
		ath10k_dbg(ar, ATH10K_DBG_MAC, "mac vdev %d rts threshold %d\n",
4453 4454 4455 4456
			   arvif->vdev_id, value);

		ret = ath10k_mac_set_rts(arvif, value);
		if (ret) {
4457
			ath10k_warn(ar, "failed to set rts threshold for vdev %d: %d\n",
4458 4459 4460 4461
				    arvif->vdev_id, ret);
			break;
		}
	}
4462 4463
	mutex_unlock(&ar->conf_mutex);

4464
	return ret;
4465 4466
}

4467 4468
static void ath10k_flush(struct ieee80211_hw *hw, struct ieee80211_vif *vif,
			 u32 queues, bool drop)
4469 4470
{
	struct ath10k *ar = hw->priv;
4471
	bool skip;
4472 4473 4474 4475 4476 4477 4478
	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
4479 4480
	mutex_lock(&ar->conf_mutex);

4481 4482 4483
	if (ar->state == ATH10K_STATE_WEDGED)
		goto skip;

4484
	ret = wait_event_timeout(ar->htt.empty_tx_wq, ({
4485
			bool empty;
4486

4487
			spin_lock_bh(&ar->htt.tx_lock);
4488
			empty = (ar->htt.num_pending_tx == 0);
4489
			spin_unlock_bh(&ar->htt.tx_lock);
4490

M
Michal Kazior 已提交
4491 4492 4493
			skip = (ar->state == ATH10K_STATE_WEDGED) ||
			       test_bit(ATH10K_FLAG_CRASH_FLUSH,
					&ar->dev_flags);
4494 4495

			(empty || skip);
4496
		}), ATH10K_FLUSH_TIMEOUT_HZ);
4497 4498

	if (ret <= 0 || skip)
4499
		ath10k_warn(ar, "failed to flush transmit queue (skip %i ar-state %i): %i\n",
4500
			    skip, ar->state, ret);
M
Michal Kazior 已提交
4501

4502
skip:
M
Michal Kazior 已提交
4503
	mutex_unlock(&ar->conf_mutex);
4504 4505 4506 4507 4508 4509 4510 4511 4512 4513 4514
}

/* 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;
}

M
Michal Kazior 已提交
4515 4516 4517 4518 4519 4520 4521
#ifdef CONFIG_PM
static int ath10k_suspend(struct ieee80211_hw *hw,
			  struct cfg80211_wowlan *wowlan)
{
	struct ath10k *ar = hw->priv;
	int ret;

4522 4523
	mutex_lock(&ar->conf_mutex);

4524
	ret = ath10k_wait_for_suspend(ar, WMI_PDEV_SUSPEND);
M
Michal Kazior 已提交
4525
	if (ret) {
4526 4527
		if (ret == -ETIMEDOUT)
			goto resume;
4528 4529
		ret = 1;
		goto exit;
M
Michal Kazior 已提交
4530 4531 4532 4533
	}

	ret = ath10k_hif_suspend(ar);
	if (ret) {
4534
		ath10k_warn(ar, "failed to suspend hif: %d\n", ret);
M
Michal Kazior 已提交
4535 4536 4537
		goto resume;
	}

4538 4539
	ret = 0;
	goto exit;
M
Michal Kazior 已提交
4540 4541 4542
resume:
	ret = ath10k_wmi_pdev_resume_target(ar);
	if (ret)
4543
		ath10k_warn(ar, "failed to resume target: %d\n", ret);
4544 4545 4546 4547 4548

	ret = 1;
exit:
	mutex_unlock(&ar->conf_mutex);
	return ret;
M
Michal Kazior 已提交
4549 4550 4551 4552 4553 4554 4555
}

static int ath10k_resume(struct ieee80211_hw *hw)
{
	struct ath10k *ar = hw->priv;
	int ret;

4556 4557
	mutex_lock(&ar->conf_mutex);

M
Michal Kazior 已提交
4558 4559
	ret = ath10k_hif_resume(ar);
	if (ret) {
4560
		ath10k_warn(ar, "failed to resume hif: %d\n", ret);
4561 4562
		ret = 1;
		goto exit;
M
Michal Kazior 已提交
4563 4564 4565 4566
	}

	ret = ath10k_wmi_pdev_resume_target(ar);
	if (ret) {
4567
		ath10k_warn(ar, "failed to resume target: %d\n", ret);
4568 4569
		ret = 1;
		goto exit;
M
Michal Kazior 已提交
4570 4571
	}

4572 4573 4574 4575
	ret = 0;
exit:
	mutex_unlock(&ar->conf_mutex);
	return ret;
M
Michal Kazior 已提交
4576 4577 4578
}
#endif

4579 4580
static void ath10k_reconfig_complete(struct ieee80211_hw *hw,
				     enum ieee80211_reconfig_type reconfig_type)
4581 4582 4583
{
	struct ath10k *ar = hw->priv;

4584 4585 4586
	if (reconfig_type != IEEE80211_RECONFIG_TYPE_RESTART)
		return;

4587 4588 4589 4590 4591
	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) {
4592
		ath10k_info(ar, "device successfully recovered\n");
4593
		ar->state = ATH10K_STATE_ON;
M
Michal Kazior 已提交
4594
		ieee80211_wake_queues(ar->hw);
4595 4596 4597 4598 4599
	}

	mutex_unlock(&ar->conf_mutex);
}

M
Michal Kazior 已提交
4600 4601 4602 4603 4604 4605 4606 4607 4608 4609 4610 4611 4612 4613 4614 4615 4616 4617 4618 4619 4620 4621 4622 4623 4624 4625 4626 4627 4628 4629
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];

4630 4631 4632
	if (ar->rx_channel == survey->channel)
		survey->filled |= SURVEY_INFO_IN_USE;

M
Michal Kazior 已提交
4633 4634 4635 4636 4637
exit:
	mutex_unlock(&ar->conf_mutex);
	return ret;
}

4638 4639 4640 4641 4642 4643 4644 4645 4646 4647 4648 4649 4650 4651 4652 4653 4654 4655 4656 4657 4658 4659 4660 4661 4662 4663 4664 4665 4666 4667 4668 4669 4670 4671 4672 4673 4674 4675 4676 4677 4678 4679
/* Helper table for legacy fixed_rate/bitrate_mask */
static const u8 cck_ofdm_rate[] = {
	/* CCK */
	3, /* 1Mbps */
	2, /* 2Mbps */
	1, /* 5.5Mbps */
	0, /* 11Mbps */
	/* OFDM */
	3, /* 6Mbps */
	7, /* 9Mbps */
	2, /* 12Mbps */
	6, /* 18Mbps */
	1, /* 24Mbps */
	5, /* 36Mbps */
	0, /* 48Mbps */
	4, /* 54Mbps */
};

/* 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;
4680 4681 4682 4683
	u16 nrf = ar->num_rf_chains;

	if (ar->cfg_tx_chainmask)
		nrf = get_nss_from_chainmask(ar->cfg_tx_chainmask);
4684 4685 4686 4687 4688 4689 4690 4691 4692 4693 4694 4695 4696 4697 4698

	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;

4699
	for (i = 0; i < nrf; i++)
4700 4701 4702
		if (mask->control[band].ht_mcs[i] != ht)
			return false;

4703
	for (i = 0; i < nrf; i++)
4704 4705 4706 4707 4708 4709 4710 4711 4712 4713 4714 4715 4716 4717 4718 4719 4720 4721 4722 4723 4724 4725 4726
		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;
4727 4728

		return false;
4729 4730 4731 4732 4733 4734 4735 4736 4737 4738
	}

	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;
4739 4740

		return false;
4741 4742 4743 4744 4745 4746 4747 4748 4749 4750 4751 4752 4753 4754 4755 4756 4757 4758 4759 4760 4761 4762 4763 4764 4765 4766 4767 4768 4769 4770 4771 4772 4773 4774 4775 4776 4777 4778 4779 4780 4781 4782 4783 4784 4785 4786 4787 4788 4789 4790 4791 4792 4793 4794 4795 4796
	}

	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
4797 4798
ath10k_bitrate_mask_rate(struct ath10k *ar,
			 const struct cfg80211_bitrate_mask *mask,
4799 4800 4801 4802 4803 4804 4805 4806 4807 4808 4809 4810 4811 4812 4813 4814 4815 4816 4817 4818 4819 4820 4821 4822 4823 4824 4825 4826 4827 4828 4829 4830 4831 4832 4833 4834 4835 4836 4837 4838 4839 4840 4841 4842 4843 4844 4845 4846 4847 4848 4849 4850 4851 4852 4853 4854 4855
			 enum ieee80211_band band,
			 u8 *fixed_rate,
			 u8 *fixed_nss)
{
	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;

		if (band == IEEE80211_BAND_2GHZ && i < 4)
			pream = WMI_RATE_PREAMBLE_CCK;

		if (band == IEEE80211_BAND_5GHZ)
			i += 4;

		if (i >= ARRAY_SIZE(cck_ofdm_rate))
			return false;

		rate = cck_ofdm_rate[i];
		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;

4856
	ath10k_dbg(ar, ATH10K_DBG_MAC, "mac fixed rate pream 0x%02x nss 0x%02x rate 0x%02x\n",
4857 4858 4859 4860 4861 4862 4863
		   pream, nss, rate);

	*fixed_rate = pream | nss | rate;

	return true;
}

4864 4865
static bool ath10k_get_fixed_rate_nss(struct ath10k *ar,
				      const struct cfg80211_bitrate_mask *mask,
4866 4867 4868 4869 4870 4871 4872 4873 4874
				      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 */
4875
	return ath10k_bitrate_mask_rate(ar, mask, band, fixed_rate, fixed_nss);
4876 4877 4878 4879
}

static int ath10k_set_fixed_rate_param(struct ath10k_vif *arvif,
				       u8 fixed_rate,
4880 4881
				       u8 fixed_nss,
				       u8 force_sgi)
4882 4883 4884 4885 4886 4887 4888 4889
{
	struct ath10k *ar = arvif->ar;
	u32 vdev_param;
	int ret = 0;

	mutex_lock(&ar->conf_mutex);

	if (arvif->fixed_rate == fixed_rate &&
4890 4891
	    arvif->fixed_nss == fixed_nss &&
	    arvif->force_sgi == force_sgi)
4892 4893 4894
		goto exit;

	if (fixed_rate == WMI_FIXED_RATE_NONE)
4895
		ath10k_dbg(ar, ATH10K_DBG_MAC, "mac disable fixed bitrate mask\n");
4896

4897
	if (force_sgi)
4898
		ath10k_dbg(ar, ATH10K_DBG_MAC, "mac force sgi\n");
4899

4900 4901 4902 4903
	vdev_param = ar->wmi.vdev_param->fixed_rate;
	ret = ath10k_wmi_vdev_set_param(ar, arvif->vdev_id,
					vdev_param, fixed_rate);
	if (ret) {
4904
		ath10k_warn(ar, "failed to set fixed rate param 0x%02x: %d\n",
4905 4906 4907 4908 4909 4910 4911 4912 4913 4914 4915 4916
			    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) {
4917
		ath10k_warn(ar, "failed to set fixed nss param %d: %d\n",
4918 4919 4920 4921 4922 4923 4924
			    fixed_nss, ret);
		ret = -EINVAL;
		goto exit;
	}

	arvif->fixed_nss = fixed_nss;

4925 4926 4927 4928 4929
	vdev_param = ar->wmi.vdev_param->sgi;
	ret = ath10k_wmi_vdev_set_param(ar, arvif->vdev_id, vdev_param,
					force_sgi);

	if (ret) {
4930
		ath10k_warn(ar, "failed to set sgi param %d: %d\n",
4931 4932 4933 4934 4935 4936 4937
			    force_sgi, ret);
		ret = -EINVAL;
		goto exit;
	}

	arvif->force_sgi = force_sgi;

4938 4939 4940 4941 4942 4943 4944 4945 4946 4947 4948 4949 4950 4951
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;
4952 4953
	u8 force_sgi;

4954 4955 4956
	if (ar->cfg_tx_chainmask)
		fixed_nss = get_nss_from_chainmask(ar->cfg_tx_chainmask);

4957 4958 4959
	force_sgi = mask->control[band].gi;
	if (force_sgi == NL80211_TXRATE_FORCE_LGI)
		return -EINVAL;
4960 4961

	if (!ath10k_default_bitrate_mask(ar, band, mask)) {
4962
		if (!ath10k_get_fixed_rate_nss(ar, mask, band,
4963 4964 4965 4966 4967
					       &fixed_rate,
					       &fixed_nss))
			return -EINVAL;
	}

4968
	if (fixed_rate == WMI_FIXED_RATE_NONE && force_sgi) {
4969
		ath10k_warn(ar, "failed to force SGI usage for default rate settings\n");
4970 4971 4972 4973 4974
		return -EINVAL;
	}

	return ath10k_set_fixed_rate_param(arvif, fixed_rate,
					   fixed_nss, force_sgi);
4975 4976
}

4977 4978 4979 4980 4981 4982 4983 4984 4985 4986 4987
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);

4988
	ath10k_dbg(ar, ATH10K_DBG_MAC,
4989 4990 4991 4992 4993 4994 4995 4996 4997 4998 4999 5000 5001 5002 5003 5004 5005 5006
		   "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:
5007
			ath10k_warn(ar, "Invalid bandwidth %d in rc update for %pM\n",
5008
				    sta->bandwidth, sta->addr);
5009 5010 5011 5012 5013 5014 5015 5016 5017 5018 5019 5020 5021 5022 5023 5024 5025 5026 5027 5028 5029 5030 5031 5032 5033
			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:
5034
			ath10k_warn(ar, "Invalid smps %d in sta rc update for %pM\n",
5035
				    sta->smps_mode, sta->addr);
5036 5037 5038 5039 5040 5041 5042 5043 5044 5045 5046 5047 5048 5049
			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);
}

5050 5051 5052 5053 5054 5055 5056 5057 5058 5059
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;
}

5060 5061 5062 5063 5064 5065
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)
{
5066
	struct ath10k *ar = hw->priv;
5067 5068
	struct ath10k_vif *arvif = ath10k_vif_to_arvif(vif);

5069
	ath10k_dbg(ar, ATH10K_DBG_MAC, "mac ampdu vdev_id %i sta %pM tid %hu action %d\n",
5070 5071 5072 5073 5074 5075 5076 5077 5078 5079 5080 5081 5082 5083 5084 5085 5086 5087 5088 5089 5090 5091 5092
		   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;
}

5093 5094 5095 5096 5097 5098 5099 5100 5101 5102 5103 5104
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,
5105
	.set_default_unicast_key        = ath10k_set_default_unicast_key,
5106 5107 5108 5109 5110 5111 5112
	.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,
5113 5114
	.set_antenna			= ath10k_set_antenna,
	.get_antenna			= ath10k_get_antenna,
5115
	.reconfig_complete		= ath10k_reconfig_complete,
M
Michal Kazior 已提交
5116
	.get_survey			= ath10k_get_survey,
5117
	.set_bitrate_mask		= ath10k_set_bitrate_mask,
5118
	.sta_rc_update			= ath10k_sta_rc_update,
5119
	.get_tsf			= ath10k_get_tsf,
5120
	.ampdu_action			= ath10k_ampdu_action,
B
Ben Greear 已提交
5121 5122 5123
	.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
5124 5125 5126

	CFG80211_TESTMODE_CMD(ath10k_tm_cmd)

M
Michal Kazior 已提交
5127 5128 5129 5130
#ifdef CONFIG_PM
	.suspend			= ath10k_suspend,
	.resume				= ath10k_resume,
#endif
5131 5132 5133
#ifdef CONFIG_MAC80211_DEBUGFS
	.sta_add_debugfs		= ath10k_sta_add_debugfs,
#endif
5134 5135 5136 5137 5138 5139 5140 5141 5142 5143 5144 5145 5146 5147 5148 5149 5150 5151 5152 5153 5154 5155 5156 5157 5158 5159 5160 5161 5162 5163 5164 5165 5166 5167 5168 5169 5170 5171 5172 5173 5174 5175 5176 5177
};

#define RATETAB_ENT(_rate, _rateid, _flags) { \
	.bitrate		= (_rate), \
	.flags			= (_flags), \
	.hw_value		= (_rateid), \
}

#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[] = {
5178 5179 5180 5181 5182 5183 5184 5185 5186 5187 5188 5189 5190 5191 5192 5193 5194 5195 5196 5197 5198 5199 5200 5201
	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),
	CHAN5G(149, 5745, 0),
	CHAN5G(153, 5765, 0),
	CHAN5G(157, 5785, 0),
	CHAN5G(161, 5805, 0),
	CHAN5G(165, 5825, 0),
5202 5203
};

M
Michal Kazior 已提交
5204 5205 5206
/* Note: Be careful if you re-order these. There is code which depends on this
 * ordering.
 */
5207 5208 5209 5210 5211 5212 5213 5214 5215 5216 5217 5218 5219 5220 5221 5222 5223 5224 5225 5226 5227 5228
static struct ieee80211_rate ath10k_rates[] = {
	/* CCK */
	RATETAB_ENT(10,  0x82, 0),
	RATETAB_ENT(20,  0x84, 0),
	RATETAB_ENT(55,  0x8b, 0),
	RATETAB_ENT(110, 0x96, 0),
	/* OFDM */
	RATETAB_ENT(60,  0x0c, 0),
	RATETAB_ENT(90,  0x12, 0),
	RATETAB_ENT(120, 0x18, 0),
	RATETAB_ENT(180, 0x24, 0),
	RATETAB_ENT(240, 0x30, 0),
	RATETAB_ENT(360, 0x48, 0),
	RATETAB_ENT(480, 0x60, 0),
	RATETAB_ENT(540, 0x6c, 0),
};

#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))

M
Michal Kazior 已提交
5229
struct ath10k *ath10k_mac_create(size_t priv_size)
5230 5231 5232 5233
{
	struct ieee80211_hw *hw;
	struct ath10k *ar;

M
Michal Kazior 已提交
5234
	hw = ieee80211_alloc_hw(sizeof(struct ath10k) + priv_size, &ath10k_ops);
5235 5236 5237 5238 5239 5240 5241 5242 5243 5244 5245 5246 5247 5248 5249 5250 5251 5252 5253
	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)
5254 5255 5256 5257 5258 5259
	},
	{
	.max	= 3,
	.types	= BIT(NL80211_IFTYPE_P2P_GO)
	},
	{
M
Michal Kazior 已提交
5260 5261 5262 5263
	.max	= 1,
	.types	= BIT(NL80211_IFTYPE_P2P_DEVICE)
	},
	{
5264 5265 5266
	.max	= 7,
	.types	= BIT(NL80211_IFTYPE_AP)
	},
5267 5268
};

5269
static const struct ieee80211_iface_limit ath10k_10x_if_limits[] = {
5270 5271 5272 5273 5274 5275 5276 5277 5278 5279 5280 5281 5282 5283
	{
	.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,
	},
5284 5285 5286
};

static const struct ieee80211_iface_combination ath10k_10x_if_comb[] = {
5287
	{
5288 5289
		.limits = ath10k_10x_if_limits,
		.n_limits = ARRAY_SIZE(ath10k_10x_if_limits),
5290 5291 5292
		.max_interfaces = 8,
		.num_different_channels = 1,
		.beacon_int_infra_match = true,
5293
#ifdef CONFIG_ATH10K_DFS_CERTIFIED
5294 5295 5296 5297 5298
		.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
5299
	},
5300 5301 5302 5303 5304 5305
};

static struct ieee80211_sta_vht_cap ath10k_create_vht_cap(struct ath10k *ar)
{
	struct ieee80211_sta_vht_cap vht_cap = {0};
	u16 mcs_map;
5306
	int i;
5307 5308 5309 5310

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

5311 5312 5313 5314 5315 5316 5317
	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);
	}
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 5367 5368 5369 5370 5371 5372 5373 5374 5375 5376 5377 5378 5379

	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;

5380
	for (i = 0; i < ar->num_rf_chains; i++)
5381 5382 5383 5384 5385 5386 5387 5388 5389 5390 5391 5392 5393 5394 5395 5396 5397 5398 5399 5400 5401 5402 5403 5404 5405 5406 5407 5408 5409 5410 5411
		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) {
5412
		ath10k_warn(ar, "No VIF found for vdev %d\n", vdev_id);
5413 5414 5415 5416 5417 5418 5419 5420
		return NULL;
	}

	return arvif_iter.arvif;
}

int ath10k_mac_register(struct ath10k *ar)
{
5421 5422 5423 5424 5425 5426 5427
	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,
	};
5428 5429 5430 5431 5432 5433 5434 5435 5436 5437 5438 5439 5440 5441 5442 5443 5444
	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
5445 5446 5447 5448
		if (!channels) {
			ret = -ENOMEM;
			goto err_free;
		}
5449 5450 5451 5452 5453 5454 5455 5456

		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;

5457 5458
		/* Enable the VHT support at 2.4 GHz */
		band->vht_cap = vht_cap;
5459 5460 5461 5462 5463 5464 5465 5466 5467

		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
5468 5469
			ret = -ENOMEM;
			goto err_free;
5470 5471 5472 5473 5474 5475 5476 5477 5478 5479 5480 5481 5482 5483
		}

		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) |
5484 5485
		BIT(NL80211_IFTYPE_AP);

5486 5487 5488
	ar->hw->wiphy->available_antennas_rx = ar->supp_rx_chainmask;
	ar->hw->wiphy->available_antennas_tx = ar->supp_tx_chainmask;

5489 5490
	if (!test_bit(ATH10K_FW_FEATURE_NO_P2P, ar->fw_features))
		ar->hw->wiphy->interface_modes |=
M
Michal Kazior 已提交
5491
			BIT(NL80211_IFTYPE_P2P_DEVICE) |
5492 5493
			BIT(NL80211_IFTYPE_P2P_CLIENT) |
			BIT(NL80211_IFTYPE_P2P_GO);
5494 5495 5496 5497 5498 5499 5500

	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 |
5501
			IEEE80211_HW_AP_LINK_PS |
5502 5503
			IEEE80211_HW_SPECTRUM_MGMT |
			IEEE80211_HW_SW_CRYPTO_CONTROL;
5504

5505 5506
	ar->hw->wiphy->features |= NL80211_FEATURE_STATIC_SMPS;

5507
	if (ar->ht_cap_info & WMI_HT_CAP_DYNAMIC_SMPS)
5508
		ar->hw->wiphy->features |= NL80211_FEATURE_DYNAMIC_SMPS;
5509 5510 5511 5512 5513 5514 5515 5516 5517 5518

	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);
5519
	ar->hw->sta_data_size = sizeof(struct ath10k_sta);
5520 5521 5522

	ar->hw->max_listen_interval = ATH10K_MAX_HW_LISTEN_INTERVAL;

5523 5524 5525 5526 5527 5528 5529 5530 5531 5532 5533 5534 5535
	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;
	}

5536
	ar->hw->wiphy->flags |= WIPHY_FLAG_HAS_REMAIN_ON_CHANNEL;
M
Michal Kazior 已提交
5537
	ar->hw->wiphy->flags |= WIPHY_FLAG_HAS_CHANNEL_SWITCH;
5538 5539 5540
	ar->hw->wiphy->max_remain_on_channel_duration = 5000;

	ar->hw->wiphy->flags |= WIPHY_FLAG_AP_UAPSD;
5541 5542
	ar->hw->wiphy->features |= NL80211_FEATURE_AP_MODE_CHAN_WIDTH_CHANGE;

5543 5544 5545 5546 5547 5548
	/*
	 * 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;

5549 5550 5551
	switch (ar->wmi.op_version) {
	case ATH10K_FW_WMI_OP_VERSION_MAIN:
	case ATH10K_FW_WMI_OP_VERSION_TLV:
5552 5553 5554
		ar->hw->wiphy->iface_combinations = ath10k_if_comb;
		ar->hw->wiphy->n_iface_combinations =
			ARRAY_SIZE(ath10k_if_comb);
5555
		ar->hw->wiphy->interface_modes |= BIT(NL80211_IFTYPE_ADHOC);
5556 5557 5558
		break;
	case ATH10K_FW_WMI_OP_VERSION_10_1:
	case ATH10K_FW_WMI_OP_VERSION_10_2:
5559
	case ATH10K_FW_WMI_OP_VERSION_10_2_4:
5560 5561 5562 5563 5564 5565 5566 5567 5568
		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;
5569
	}
5570

5571 5572
	ar->hw->netdev_features = NETIF_F_HW_CSUM;

J
Janusz Dziedzic 已提交
5573 5574 5575 5576 5577 5578 5579
	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)
5580
			ath10k_warn(ar, "failed to initialise DFS pattern detector\n");
J
Janusz Dziedzic 已提交
5581 5582
	}

5583 5584 5585
	ret = ath_regd_init(&ar->ath_common.regulatory, ar->hw->wiphy,
			    ath10k_reg_notifier);
	if (ret) {
5586
		ath10k_err(ar, "failed to initialise regulatory: %i\n", ret);
M
Michal Kazior 已提交
5587
		goto err_free;
5588 5589
	}

5590 5591 5592
	ar->hw->wiphy->cipher_suites = cipher_suites;
	ar->hw->wiphy->n_cipher_suites = ARRAY_SIZE(cipher_suites);

5593 5594
	ret = ieee80211_register_hw(ar->hw);
	if (ret) {
5595
		ath10k_err(ar, "failed to register ieee80211: %d\n", ret);
M
Michal Kazior 已提交
5596
		goto err_free;
5597 5598 5599 5600 5601 5602
	}

	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
5603
			goto err_unregister;
5604 5605 5606
	}

	return 0;
M
Michal Kazior 已提交
5607 5608

err_unregister:
5609
	ieee80211_unregister_hw(ar->hw);
M
Michal Kazior 已提交
5610 5611 5612 5613
err_free:
	kfree(ar->mac.sbands[IEEE80211_BAND_2GHZ].channels);
	kfree(ar->mac.sbands[IEEE80211_BAND_5GHZ].channels);

5614 5615 5616 5617 5618 5619 5620
	return ret;
}

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

J
Janusz Dziedzic 已提交
5621 5622 5623
	if (config_enabled(CONFIG_ATH10K_DFS_CERTIFIED) && ar->dfs_detector)
		ar->dfs_detector->exit(ar->dfs_detector);

5624 5625 5626 5627 5628
	kfree(ar->mac.sbands[IEEE80211_BAND_2GHZ].channels);
	kfree(ar->mac.sbands[IEEE80211_BAND_5GHZ].channels);

	SET_IEEE80211_DEV(ar->hw, NULL);
}