mac.c 126.3 KB
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/*
 * Copyright (c) 2005-2011 Atheros Communications Inc.
 * Copyright (c) 2011-2013 Qualcomm Atheros, Inc.
 *
 * Permission to use, copy, modify, and/or distribute this software for any
 * purpose with or without fee is hereby granted, provided that the above
 * copyright notice and this permission notice appear in all copies.
 *
 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
 */

#include "mac.h"

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

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#include "hif.h"
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#include "core.h"
#include "debug.h"
#include "wmi.h"
#include "htt.h"
#include "txrx.h"
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#include "testmode.h"
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#include "wmi.h"
#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,
			   const u8 *macaddr)
{
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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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		if (arvif->vdev_type == WMI_VDEV_TYPE_AP)
			key->flags |= IEEE80211_KEY_FLAG_GENERATE_IV_MGMT;
		else
			key->flags |= IEEE80211_KEY_FLAG_SW_MGMT_TX;
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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;
		break;
	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,
			      const u8 *macaddr)
{
	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);
	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;

	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;

		ret = ath10k_install_key(arvif, arvif->wep_keys[i], SET_KEY,
					 addr);
		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;

		ret = ath10k_install_key(arvif, peer->keys[i],
					 DISABLE_KEY, addr);
		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;

		ret = ath10k_install_key(arvif, key, DISABLE_KEY, addr);
		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:
			phymode = MODE_11G;
			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);

	dev_kfree_skb_any(arvif->beacon);

	arvif->beacon = NULL;
	arvif->beacon_sent = false;
}

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: %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)
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{
	int ret = 0;

	lockdep_assert_held(&ar->conf_mutex);

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	ret = ath10k_wmi_vdev_down(ar, ar->monitor_vdev_id);
	if (ret)
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		ath10k_warn(ar, "failed to put down monitor vdev %i: %d\n",
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			    ar->monitor_vdev_id, ret);
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	reinit_completion(&ar->vdev_setup_done);

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	ret = ath10k_wmi_vdev_stop(ar, ar->monitor_vdev_id);
	if (ret)
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		ath10k_warn(ar, "failed to to request monitor vdev %i stop: %d\n",
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			    ar->monitor_vdev_id, ret);
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	ret = ath10k_vdev_setup_sync(ar);
	if (ret)
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		ath10k_warn(ar, "failed to synchronise monitor vdev %i: %d\n",
645
			    ar->monitor_vdev_id, ret);
646

647
	ath10k_dbg(ar, ATH10K_DBG_MAC, "mac monitor vdev %i stopped\n",
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		   ar->monitor_vdev_id);
649 650 651
	return ret;
}

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static int ath10k_monitor_vdev_create(struct ath10k *ar)
653 654 655 656 657
{
	int bit, ret = 0;

	lockdep_assert_held(&ar->conf_mutex);

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	if (ar->free_vdev_map == 0) {
659
		ath10k_warn(ar, "failed to find free vdev id for monitor vdev\n");
660 661 662
		return -ENOMEM;
	}

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	bit = __ffs64(ar->free_vdev_map);
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	ar->monitor_vdev_id = bit;
666 667 668 669 670

	ret = ath10k_wmi_vdev_create(ar, ar->monitor_vdev_id,
				     WMI_VDEV_TYPE_MONITOR,
				     0, ar->mac_addr);
	if (ret) {
671
		ath10k_warn(ar, "failed to request monitor vdev %i creation: %d\n",
672
			    ar->monitor_vdev_id, ret);
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		return ret;
674 675
	}

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	ar->free_vdev_map &= ~(1LL << ar->monitor_vdev_id);
677
	ath10k_dbg(ar, ATH10K_DBG_MAC, "mac monitor vdev %d created\n",
678 679 680 681 682
		   ar->monitor_vdev_id);

	return 0;
}

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static int ath10k_monitor_vdev_delete(struct ath10k *ar)
684 685 686 687 688 689 690
{
	int ret = 0;

	lockdep_assert_held(&ar->conf_mutex);

	ret = ath10k_wmi_vdev_delete(ar, ar->monitor_vdev_id);
	if (ret) {
691
		ath10k_warn(ar, "failed to request wmi monitor vdev %i removal: %d\n",
692
			    ar->monitor_vdev_id, ret);
693 694 695
		return ret;
	}

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	ar->free_vdev_map |= 1LL << ar->monitor_vdev_id;
697

698
	ath10k_dbg(ar, ATH10K_DBG_MAC, "mac monitor vdev %d deleted\n",
699 700 701 702
		   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) {
711
		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) {
717
		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;
723
	ath10k_dbg(ar, ATH10K_DBG_MAC, "mac monitor started\n");
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	return 0;
}

728
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);
735
	if (ret) {
736
		ath10k_warn(ar, "failed to stop monitor vdev: %d\n", ret);
737 738
		return ret;
	}
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	ret = ath10k_monitor_vdev_delete(ar);
741
	if (ret) {
742
		ath10k_warn(ar, "failed to delete monitor vdev: %d\n", ret);
743 744
		return ret;
	}
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	ar->monitor_started = false;
747
	ath10k_dbg(ar, ATH10K_DBG_MAC, "mac monitor stopped\n");
748 749 750 751 752 753 754 755 756 757 758 759 760 761 762 763 764 765 766 767 768 769 770

	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);
771 772

	return ath10k_monitor_stop(ar);
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}

775 776 777 778 779 780 781 782 783 784 785 786 787 788 789 790 791 792 793 794
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);
}

795 796 797 798 799 800 801 802
static int ath10k_start_cac(struct ath10k *ar)
{
	int ret;

	lockdep_assert_held(&ar->conf_mutex);

	set_bit(ATH10K_CAC_RUNNING, &ar->dev_flags);

803
	ret = ath10k_monitor_recalc(ar);
804
	if (ret) {
805
		ath10k_warn(ar, "failed to start monitor (cac): %d\n", ret);
806 807 808 809
		clear_bit(ATH10K_CAC_RUNNING, &ar->dev_flags);
		return ret;
	}

810
	ath10k_dbg(ar, ATH10K_DBG_MAC, "mac cac start monitor vdev %d\n",
811 812 813 814 815 816 817 818 819 820 821 822 823 824
		   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);
826

827
	ath10k_dbg(ar, ATH10K_DBG_MAC, "mac cac finished\n");
828 829 830 831

	return 0;
}

832
static void ath10k_recalc_radar_detection(struct ath10k *ar)
833 834 835 836 837 838 839
{
	int ret;

	lockdep_assert_held(&ar->conf_mutex);

	ath10k_stop_cac(ar);

840
	if (!ar->radar_enabled)
841 842
		return;

843
	if (ar->num_started_vdevs > 0)
844 845 846 847 848 849 850 851 852
		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.
		 */
853
		ath10k_warn(ar, "failed to start CAC: %d\n", ret);
854 855 856 857
		ieee80211_radar_detected(ar->hw);
	}
}

858
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;
	}

895
	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));

900 901 902 903 904
	if (restart)
		ret = ath10k_wmi_vdev_restart(ar, &arg);
	else
		ret = ath10k_wmi_vdev_start(ar, &arg);

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	if (ret) {
906
		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) {
913
		ath10k_warn(ar, "failed to synchronise setup for vdev %i: %d\n",
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			    arg.vdev_id, ret);
		return ret;
	}

918 919 920
	ar->num_started_vdevs++;
	ath10k_recalc_radar_detection(ar);

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	return ret;
}

924 925 926 927 928 929 930 931 932 933
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) {
945
		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) {
952
		ath10k_warn(ar, "failed to syncronise setup for vdev %i: %d\n",
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			    arvif->vdev_id, ret);
		return ret;
	}

957 958 959 960 961 962 963
	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;
}

967
static void ath10k_control_beaconing(struct ath10k_vif *arvif,
968
				     struct ieee80211_bss_conf *info)
969
{
970
	struct ath10k *ar = arvif->ar;
971 972
	int ret = 0;

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

975 976
	if (!info->enable_beacon) {
		ath10k_vdev_stop(arvif);
977 978 979 980

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

981
		spin_lock_bh(&arvif->ar->data_lock);
982
		ath10k_mac_vif_beacon_free(arvif);
983 984
		spin_unlock_bh(&arvif->ar->data_lock);

985 986 987 988 989 990 991 992 993
		return;
	}

	arvif->tx_seq_no = 0x1000;

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

994
	arvif->aid = 0;
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	ether_addr_copy(arvif->bssid, info->bssid);
996 997 998

	ret = ath10k_wmi_vdev_up(arvif->ar, arvif->vdev_id, arvif->aid,
				 arvif->bssid);
999
	if (ret) {
1000
		ath10k_warn(ar, "failed to bring up vdev %d: %i\n",
1001
			    arvif->vdev_id, ret);
1002
		ath10k_vdev_stop(arvif);
1003 1004
		return;
	}
1005 1006 1007 1008

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

1009
	ath10k_dbg(ar, ATH10K_DBG_MAC, "mac vdev %d up\n", arvif->vdev_id);
1010 1011 1012 1013 1014 1015
}

static void ath10k_control_ibss(struct ath10k_vif *arvif,
				struct ieee80211_bss_conf *info,
				const u8 self_peer[ETH_ALEN])
{
1016
	struct ath10k *ar = arvif->ar;
1017
	u32 vdev_param;
1018 1019
	int ret = 0;

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

1022 1023 1024
	if (!info->ibss_joined) {
		ret = ath10k_peer_delete(arvif->ar, arvif->vdev_id, self_peer);
		if (ret)
1025
			ath10k_warn(ar, "failed to delete IBSS self peer %pM for vdev %d: %d\n",
1026 1027
				    self_peer, arvif->vdev_id, ret);

1028
		if (is_zero_ether_addr(arvif->bssid))
1029 1030
			return;

1031
		memset(arvif->bssid, 0, ETH_ALEN);
1032 1033 1034 1035 1036 1037

		return;
	}

	ret = ath10k_peer_create(arvif->ar, arvif->vdev_id, self_peer);
	if (ret) {
1038
		ath10k_warn(ar, "failed to create IBSS self peer %pM for vdev %d: %d\n",
1039 1040 1041 1042
			    self_peer, arvif->vdev_id, ret);
		return;
	}

1043 1044
	vdev_param = arvif->ar->wmi.vdev_param->atim_window;
	ret = ath10k_wmi_vdev_set_param(arvif->ar, arvif->vdev_id, vdev_param,
1045 1046
					ATH10K_DEFAULT_ATIM);
	if (ret)
1047
		ath10k_warn(ar, "failed to set IBSS ATIM for vdev %d: %d\n",
1048 1049 1050
			    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;
}

1102 1103 1104
/*
 * Review this when mac80211 gains per-interface powersave support.
 */
1105
static int ath10k_mac_vif_setup_ps(struct ath10k_vif *arvif)
1106
{
1107 1108
	struct ath10k *ar = arvif->ar;
	struct ieee80211_conf *conf = &ar->hw->conf;
1109 1110 1111 1112
	enum wmi_sta_powersave_param param;
	enum wmi_sta_ps_mode psmode;
	int ret;

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1113 1114
	lockdep_assert_held(&arvif->ar->conf_mutex);

1115 1116
	if (arvif->vif->type != NL80211_IFTYPE_STATION)
		return 0;
1117 1118 1119 1120 1121

	if (conf->flags & IEEE80211_CONF_PS) {
		psmode = WMI_STA_PS_MODE_ENABLED;
		param = WMI_STA_PS_PARAM_INACTIVITY_TIME;

1122
		ret = ath10k_wmi_set_sta_ps_param(ar, arvif->vdev_id, param,
1123 1124
						  conf->dynamic_ps_timeout);
		if (ret) {
1125
			ath10k_warn(ar, "failed to set inactivity time for vdev %d: %i\n",
1126
				    arvif->vdev_id, ret);
1127
			return ret;
1128 1129 1130 1131 1132
		}
	} else {
		psmode = WMI_STA_PS_MODE_DISABLED;
	}

1133
	ath10k_dbg(ar, ATH10K_DBG_MAC, "mac vdev %d psmode %s\n",
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		   arvif->vdev_id, psmode ? "enable" : "disable");

1136 1137
	ret = ath10k_wmi_set_psmode(ar, arvif->vdev_id, psmode);
	if (ret) {
1138
		ath10k_warn(ar, "failed to set PS Mode %d for vdev %d: %d\n",
1139
			    psmode, arvif->vdev_id, ret);
1140 1141 1142 1143
		return ret;
	}

	return 0;
1144 1145 1146 1147 1148 1149
}

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

1167
static void ath10k_peer_assoc_h_basic(struct ath10k *ar,
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				      struct ieee80211_vif *vif,
1169 1170 1171
				      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);
1177 1178 1179
	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);
1181
	arg->peer_num_spatial_streams = 1;
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	arg->peer_caps = vif->bss_conf.assoc_capability;
1183 1184 1185
}

static void ath10k_peer_assoc_h_crypto(struct ath10k *ar,
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				       struct ieee80211_vif *vif,
1187 1188 1189 1190 1191 1192 1193
				       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);

1196 1197 1198 1199 1200 1201 1202 1203 1204 1205 1206
	bss = cfg80211_get_bss(ar->hw->wiphy, ar->hw->conf.chandef.chan,
			       info->bssid, NULL, 0, 0, 0);
	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,
1207 1208 1209
						WLAN_OUI_TYPE_MICROSOFT_WPA,
						ies->data,
						ies->len);
1210 1211 1212 1213 1214 1215
		rcu_read_unlock();
		cfg80211_put_bss(ar->hw->wiphy, bss);
	}

	/* FIXME: base on RSN IE/WPA IE is a correct idea? */
	if (rsnie || wpaie) {
1216
		ath10k_dbg(ar, ATH10K_DBG_WMI, "%s: rsn ie found\n", __func__);
1217 1218 1219 1220
		arg->peer_flags |= WMI_PEER_NEED_PTK_4_WAY;
	}

	if (wpaie) {
1221
		ath10k_dbg(ar, ATH10K_DBG_WMI, "%s: wpa ie found\n", __func__);
1222 1223 1224 1225 1226 1227 1228 1229 1230 1231 1232 1233 1234 1235
		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);

1238 1239 1240 1241 1242 1243 1244 1245 1246 1247 1248 1249 1250 1251 1252 1253 1254 1255 1256 1257 1258
	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;
1259
	u32 stbc;
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	lockdep_assert_held(&ar->conf_mutex);

1263 1264 1265 1266 1267 1268 1269 1270 1271 1272 1273 1274 1275 1276 1277 1278 1279 1280 1281 1282 1283 1284 1285 1286 1287 1288 1289 1290 1291 1292 1293 1294 1295 1296 1297 1298 1299 1300 1301 1302 1303 1304 1305 1306 1307 1308 1309 1310 1311
	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;

1312 1313 1314 1315 1316 1317 1318 1319 1320 1321 1322 1323 1324 1325 1326 1327 1328
	/*
	 * 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;
	}
1329

1330
	ath10k_dbg(ar, ATH10K_DBG_MAC, "mac ht peer %pM mcs cnt %d nss %d\n",
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		   arg->addr,
1332 1333 1334 1335
		   arg->peer_ht_rates.num_rates,
		   arg->peer_num_spatial_streams);
}

1336 1337 1338
static int ath10k_peer_assoc_qos_ap(struct ath10k *ar,
				    struct ath10k_vif *arvif,
				    struct ieee80211_sta *sta)
1339 1340 1341
{
	u32 uapsd = 0;
	u32 max_sp = 0;
1342
	int ret = 0;
1343

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	lockdep_assert_held(&ar->conf_mutex);

1346
	if (sta->wme && sta->uapsd_queues) {
1347
		ath10k_dbg(ar, ATH10K_DBG_MAC, "mac uapsd_queues 0x%x max_sp %d\n",
1348 1349 1350 1351 1352 1353 1354 1355 1356 1357 1358 1359 1360 1361 1362 1363 1364 1365
			   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;

1366 1367 1368 1369 1370
		ret = ath10k_wmi_set_ap_ps_param(ar, arvif->vdev_id,
						 sta->addr,
						 WMI_AP_PS_PEER_PARAM_UAPSD,
						 uapsd);
		if (ret) {
1371
			ath10k_warn(ar, "failed to set ap ps peer param uapsd for vdev %i: %d\n",
1372
				    arvif->vdev_id, ret);
1373 1374
			return ret;
		}
1375

1376 1377 1378 1379 1380
		ret = ath10k_wmi_set_ap_ps_param(ar, arvif->vdev_id,
						 sta->addr,
						 WMI_AP_PS_PEER_PARAM_MAX_SP,
						 max_sp);
		if (ret) {
1381
			ath10k_warn(ar, "failed to set ap ps peer param max sp for vdev %i: %d\n",
1382
				    arvif->vdev_id, ret);
1383 1384
			return ret;
		}
1385 1386 1387 1388 1389

		/* 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 */
1390
		ret = ath10k_wmi_set_ap_ps_param(ar, arvif->vdev_id, sta->addr,
1391 1392
						 WMI_AP_PS_PEER_PARAM_AGEOUT_TIME,
						 10);
1393
		if (ret) {
1394
			ath10k_warn(ar, "failed to set ap ps peer param ageout time for vdev %i: %d\n",
1395
				    arvif->vdev_id, ret);
1396 1397
			return ret;
		}
1398 1399
	}

1400
	return 0;
1401 1402 1403 1404 1405 1406 1407
}

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;
1408
	u8 ampdu_factor;
1409 1410 1411 1412 1413 1414 1415

	if (!vht_cap->vht_supported)
		return;

	arg->peer_flags |= WMI_PEER_VHT;
	arg->peer_vht_caps = vht_cap->cap;

1416 1417 1418 1419 1420 1421 1422 1423 1424 1425 1426 1427
	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);

1428 1429 1430 1431 1432 1433 1434 1435 1436 1437 1438 1439
	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);

1440
	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);
1442 1443 1444
}

static void ath10k_peer_assoc_h_qos(struct ath10k *ar,
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				    struct ieee80211_vif *vif,
1446 1447 1448
				    struct ieee80211_sta *sta,
				    struct wmi_peer_assoc_complete_arg *arg)
{
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	struct ath10k_vif *arvif = ath10k_vif_to_arvif(vif);

1451 1452
	switch (arvif->vdev_type) {
	case WMI_VDEV_TYPE_AP:
1453 1454 1455 1456 1457 1458 1459
		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;
		}
1460 1461
		break;
	case WMI_VDEV_TYPE_STA:
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		if (vif->bss_conf.qos)
1463
			arg->peer_flags |= WMI_PEER_QOS;
1464 1465 1466 1467 1468 1469
		break;
	default:
		break;
	}
}

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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;
}

1476
static void ath10k_peer_assoc_h_phymode(struct ath10k *ar,
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					struct ieee80211_vif *vif,
1478 1479 1480 1481 1482 1483 1484 1485 1486 1487 1488 1489
					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:
		if (sta->ht_cap.ht_supported) {
			if (sta->bandwidth == IEEE80211_STA_RX_BW_40)
				phymode = MODE_11NG_HT40;
			else
				phymode = MODE_11NG_HT20;
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		} else if (ath10k_mac_sta_has_11g_rates(sta)) {
1491
			phymode = MODE_11G;
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		} else {
			phymode = MODE_11B;
1494 1495 1496 1497
		}

		break;
	case IEEE80211_BAND_5GHZ:
1498 1499 1500 1501 1502 1503 1504 1505 1506 1507 1508
		/*
		 * 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) {
1509 1510 1511 1512 1513 1514 1515 1516 1517 1518 1519 1520 1521
			if (sta->bandwidth == IEEE80211_STA_RX_BW_40)
				phymode = MODE_11NA_HT40;
			else
				phymode = MODE_11NA_HT20;
		} else {
			phymode = MODE_11A;
		}

		break;
	default:
		break;
	}

1522
	ath10k_dbg(ar, ATH10K_DBG_MAC, "mac peer %pM phymode %s\n",
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		   sta->addr, ath10k_wmi_phymode_str(phymode));
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1525 1526 1527 1528
	arg->peer_phymode = phymode;
	WARN_ON(phymode == MODE_UNKNOWN);
}

1529
static int ath10k_peer_assoc_prepare(struct ath10k *ar,
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				     struct ieee80211_vif *vif,
1531 1532
				     struct ieee80211_sta *sta,
				     struct wmi_peer_assoc_complete_arg *arg)
1533
{
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	lockdep_assert_held(&ar->conf_mutex);

1536
	memset(arg, 0, sizeof(*arg));
1537

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	ath10k_peer_assoc_h_basic(ar, vif, sta, arg);
	ath10k_peer_assoc_h_crypto(ar, vif, arg);
1540 1541 1542
	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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	ath10k_peer_assoc_h_qos(ar, vif, sta, arg);
	ath10k_peer_assoc_h_phymode(ar, vif, sta, arg);
1545

1546
	return 0;
1547 1548
}

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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]);
}

1576 1577 1578 1579 1580 1581 1582
/* can be called only in mac80211 callbacks due to `key_count` usage */
static void ath10k_bss_assoc(struct ieee80211_hw *hw,
			     struct ieee80211_vif *vif,
			     struct ieee80211_bss_conf *bss_conf)
{
	struct ath10k *ar = hw->priv;
	struct ath10k_vif *arvif = ath10k_vif_to_arvif(vif);
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	struct ieee80211_sta_ht_cap ht_cap;
1584
	struct wmi_peer_assoc_complete_arg peer_arg;
1585 1586 1587
	struct ieee80211_sta *ap_sta;
	int ret;

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	lockdep_assert_held(&ar->conf_mutex);

1590 1591 1592
	ath10k_dbg(ar, ATH10K_DBG_MAC, "mac vdev %i assoc bssid %pM aid %d\n",
		   arvif->vdev_id, arvif->bssid, arvif->aid);

1593 1594 1595 1596
	rcu_read_lock();

	ap_sta = ieee80211_find_sta(vif, bss_conf->bssid);
	if (!ap_sta) {
1597
		ath10k_warn(ar, "failed to find station entry for bss %pM vdev %i\n",
1598
			    bss_conf->bssid, arvif->vdev_id);
1599 1600 1601 1602
		rcu_read_unlock();
		return;
	}

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

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	ret = ath10k_peer_assoc_prepare(ar, vif, ap_sta, &peer_arg);
1608
	if (ret) {
1609
		ath10k_warn(ar, "failed to prepare peer assoc for %pM vdev %i: %d\n",
1610
			    bss_conf->bssid, arvif->vdev_id, ret);
1611 1612 1613 1614 1615 1616
		rcu_read_unlock();
		return;
	}

	rcu_read_unlock();

1617 1618
	ret = ath10k_wmi_peer_assoc(ar, &peer_arg);
	if (ret) {
1619
		ath10k_warn(ar, "failed to run peer assoc for %pM vdev %i: %d\n",
1620
			    bss_conf->bssid, arvif->vdev_id, ret);
1621 1622 1623
		return;
	}

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	ret = ath10k_setup_peer_smps(ar, arvif, bss_conf->bssid, &ht_cap);
	if (ret) {
1626
		ath10k_warn(ar, "failed to setup peer SMPS for vdev %i: %d\n",
1627
			    arvif->vdev_id, ret);
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		return;
	}

1631
	ath10k_dbg(ar, ATH10K_DBG_MAC,
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		   "mac vdev %d up (associated) bssid %pM aid %d\n",
		   arvif->vdev_id, bss_conf->bssid, bss_conf->aid);

1635 1636
	WARN_ON(arvif->is_up);

1637
	arvif->aid = bss_conf->aid;
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	ether_addr_copy(arvif->bssid, bss_conf->bssid);
1639 1640 1641

	ret = ath10k_wmi_vdev_up(ar, arvif->vdev_id, arvif->aid, arvif->bssid);
	if (ret) {
1642
		ath10k_warn(ar, "failed to set vdev %d up: %d\n",
1643
			    arvif->vdev_id, ret);
1644 1645 1646 1647
		return;
	}

	arvif->is_up = true;
1648 1649 1650 1651 1652 1653 1654 1655 1656
}

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);
	int ret;

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	lockdep_assert_held(&ar->conf_mutex);

1659 1660
	ath10k_dbg(ar, ATH10K_DBG_MAC, "mac vdev %i disassoc bssid %pM\n",
		   arvif->vdev_id, arvif->bssid);
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1662
	ret = ath10k_wmi_vdev_down(ar, arvif->vdev_id);
1663 1664 1665
	if (ret)
		ath10k_warn(ar, "faield to down vdev %i: %d\n",
			    arvif->vdev_id, ret);
1666

1667
	arvif->def_wep_key_idx = 0;
1668
	arvif->is_up = false;
1669 1670
}

M
Michal Kazior 已提交
1671 1672 1673 1674
static int ath10k_station_assoc(struct ath10k *ar,
				struct ieee80211_vif *vif,
				struct ieee80211_sta *sta,
				bool reassoc)
1675
{
M
Michal Kazior 已提交
1676
	struct ath10k_vif *arvif = ath10k_vif_to_arvif(vif);
1677
	struct wmi_peer_assoc_complete_arg peer_arg;
1678 1679
	int ret = 0;

M
Michal Kazior 已提交
1680 1681
	lockdep_assert_held(&ar->conf_mutex);

M
Michal Kazior 已提交
1682
	ret = ath10k_peer_assoc_prepare(ar, vif, sta, &peer_arg);
1683
	if (ret) {
1684
		ath10k_warn(ar, "failed to prepare WMI peer assoc for %pM vdev %i: %i\n",
1685
			    sta->addr, arvif->vdev_id, ret);
1686 1687 1688
		return ret;
	}

1689
	peer_arg.peer_reassoc = reassoc;
1690
	ret = ath10k_wmi_peer_assoc(ar, &peer_arg);
1691
	if (ret) {
1692
		ath10k_warn(ar, "failed to run peer assoc for STA %pM vdev %i: %d\n",
1693
			    sta->addr, arvif->vdev_id, ret);
1694 1695 1696
		return ret;
	}

1697 1698 1699 1700 1701 1702
	/* 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);
1703
		if (ret) {
1704
			ath10k_warn(ar, "failed to setup peer SMPS for vdev %d: %d\n",
1705 1706 1707 1708
				    arvif->vdev_id, ret);
			return ret;
		}

1709 1710 1711 1712 1713 1714
		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;
		}
1715

1716 1717 1718 1719 1720 1721 1722 1723 1724 1725 1726 1727 1728 1729 1730 1731
		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;
			}
		}

		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;
		}
1732 1733
	}

1734 1735 1736
	return ret;
}

M
Michal Kazior 已提交
1737 1738
static int ath10k_station_disassoc(struct ath10k *ar,
				   struct ieee80211_vif *vif,
1739 1740
				   struct ieee80211_sta *sta)
{
M
Michal Kazior 已提交
1741
	struct ath10k_vif *arvif = ath10k_vif_to_arvif(vif);
1742 1743
	int ret = 0;

M
Michal Kazior 已提交
1744 1745
	lockdep_assert_held(&ar->conf_mutex);

1746 1747 1748 1749
	if (!sta->wme) {
		arvif->num_legacy_stations--;
		ret = ath10k_recalc_rtscts_prot(arvif);
		if (ret) {
1750
			ath10k_warn(ar, "failed to recalculate rts/cts prot for vdev %d: %d\n",
1751 1752 1753 1754 1755
				    arvif->vdev_id, ret);
			return ret;
		}
	}

1756 1757
	ret = ath10k_clear_peer_keys(arvif, sta->addr);
	if (ret) {
1758
		ath10k_warn(ar, "failed to clear all peer wep keys for vdev %i: %d\n",
1759
			    arvif->vdev_id, ret);
1760 1761 1762 1763 1764 1765 1766 1767 1768 1769 1770 1771 1772 1773 1774 1775 1776 1777 1778 1779 1780 1781 1782
		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
1783 1784
	lockdep_assert_held(&ar->conf_mutex);

1785 1786 1787 1788 1789 1790 1791 1792 1793 1794 1795 1796 1797 1798 1799 1800 1801 1802 1803 1804 1805 1806 1807 1808 1809 1810 1811 1812 1813 1814 1815 1816 1817 1818 1819 1820
	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 =
1821
				!(channel->flags & IEEE80211_CHAN_NO_IR);
1822 1823 1824 1825

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

1826 1827 1828
			ch->chan_radar =
				!!(channel->flags & IEEE80211_CHAN_RADAR);

1829
			passive = channel->flags & IEEE80211_CHAN_NO_IR;
1830 1831 1832
			ch->passive = passive;

			ch->freq = channel->center_freq;
1833
			ch->band_center_freq1 = channel->center_freq;
1834
			ch->min_power = 0;
M
Michal Kazior 已提交
1835 1836 1837
			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;
1838 1839 1840 1841 1842 1843 1844 1845 1846 1847 1848 1849 1850
			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;

1851
			ath10k_dbg(ar, ATH10K_DBG_WMI,
K
Kalle Valo 已提交
1852 1853
				   "mac channel [%zd/%d] freq %d maxpower %d regpower %d antenna %d mode %d\n",
				    ch - arg.channels, arg.n_channels,
1854 1855 1856 1857 1858 1859 1860 1861 1862 1863 1864 1865 1866
				   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;
}

1867 1868 1869 1870 1871 1872 1873 1874 1875 1876 1877 1878 1879 1880 1881 1882
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;
}

1883
static void ath10k_regd_update(struct ath10k *ar)
1884 1885 1886
{
	struct reg_dmn_pair_mapping *regpair;
	int ret;
1887 1888
	enum wmi_dfs_region wmi_dfs_reg;
	enum nl80211_dfs_regions nl_dfs_reg;
1889

1890
	lockdep_assert_held(&ar->conf_mutex);
1891 1892 1893

	ret = ath10k_update_channel_list(ar);
	if (ret)
1894
		ath10k_warn(ar, "failed to update channel list: %d\n", ret);
1895 1896

	regpair = ar->ath_common.regulatory.regpair;
1897

1898 1899 1900 1901 1902 1903 1904
	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;
	}

1905 1906 1907
	/* Target allows setting up per-band regdomain but ath_common provides
	 * a combined one only */
	ret = ath10k_wmi_pdev_set_regdomain(ar,
1908 1909 1910
					    regpair->reg_domain,
					    regpair->reg_domain, /* 2ghz */
					    regpair->reg_domain, /* 5ghz */
1911
					    regpair->reg_2ghz_ctl,
1912 1913
					    regpair->reg_5ghz_ctl,
					    wmi_dfs_reg);
1914
	if (ret)
1915
		ath10k_warn(ar, "failed to set pdev regdomain: %d\n", ret);
1916
}
M
Michal Kazior 已提交
1917

1918 1919 1920 1921 1922
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
1923
	bool result;
1924 1925 1926

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

J
Janusz Dziedzic 已提交
1927
	if (config_enabled(CONFIG_ATH10K_DFS_CERTIFIED) && ar->dfs_detector) {
1928
		ath10k_dbg(ar, ATH10K_DBG_REGULATORY, "dfs region 0x%x\n",
J
Janusz Dziedzic 已提交
1929 1930 1931 1932
			   request->dfs_region);
		result = ar->dfs_detector->set_dfs_domain(ar->dfs_detector,
							  request->dfs_region);
		if (!result)
1933
			ath10k_warn(ar, "DFS region 0x%X not supported, will trigger radar for every pulse\n",
J
Janusz Dziedzic 已提交
1934 1935 1936
				    request->dfs_region);
	}

1937 1938 1939
	mutex_lock(&ar->conf_mutex);
	if (ar->state == ATH10K_STATE_ON)
		ath10k_regd_update(ar);
M
Michal Kazior 已提交
1940
	mutex_unlock(&ar->conf_mutex);
1941 1942 1943 1944 1945 1946
}

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

1947 1948 1949 1950 1951 1952 1953 1954 1955 1956 1957 1958 1959 1960
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;
}

1961
static u8 ath10k_tx_h_get_vdev_id(struct ath10k *ar, struct ieee80211_vif *vif)
1962
{
1963 1964
	if (vif)
		return ath10k_vif_to_arvif(vif)->vdev_id;
1965

M
Michal Kazior 已提交
1966
	if (ar->monitor_started)
1967 1968
		return ar->monitor_vdev_id;

1969
	ath10k_warn(ar, "failed to resolve vdev id\n");
1970 1971 1972
	return 0;
}

M
Michal Kazior 已提交
1973 1974
/* HTT Tx uses Native Wifi tx mode which expects 802.11 frames without QoS
 * Control in the header.
1975
 */
M
Michal Kazior 已提交
1976
static void ath10k_tx_h_nwifi(struct ieee80211_hw *hw, struct sk_buff *skb)
1977 1978
{
	struct ieee80211_hdr *hdr = (void *)skb->data;
1979
	struct ath10k_skb_cb *cb = ATH10K_SKB_CB(skb);
1980 1981 1982 1983 1984 1985
	u8 *qos_ctl;

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

	qos_ctl = ieee80211_get_qos_ctl(hdr);
1986 1987 1988
	memmove(skb->data + IEEE80211_QOS_CTL_LEN,
		skb->data, (void *)qos_ctl - (void *)skb->data);
	skb_pull(skb, IEEE80211_QOS_CTL_LEN);
1989 1990 1991 1992 1993 1994 1995 1996 1997 1998

	/* 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.
	 */
	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;
	}
1999 2000
}

2001 2002 2003 2004
static void ath10k_tx_wep_key_work(struct work_struct *work)
{
	struct ath10k_vif *arvif = container_of(work, struct ath10k_vif,
						wep_key_work);
2005
	struct ath10k *ar = arvif->ar;
2006 2007
	int ret, keyidx = arvif->def_wep_key_newidx;

M
Michal Kazior 已提交
2008 2009 2010 2011 2012
	mutex_lock(&arvif->ar->conf_mutex);

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

2013
	if (arvif->def_wep_key_idx == keyidx)
M
Michal Kazior 已提交
2014
		goto unlock;
2015

2016
	ath10k_dbg(ar, ATH10K_DBG_MAC, "mac vdev %d set keyidx %d\n",
2017 2018 2019 2020 2021 2022 2023
		   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) {
2024
		ath10k_warn(ar, "failed to update wep key index for vdev %d: %d\n",
2025 2026
			    arvif->vdev_id,
			    ret);
M
Michal Kazior 已提交
2027
		goto unlock;
2028 2029 2030
	}

	arvif->def_wep_key_idx = keyidx;
M
Michal Kazior 已提交
2031 2032 2033

unlock:
	mutex_unlock(&arvif->ar->conf_mutex);
2034 2035
}

M
Michal Kazior 已提交
2036 2037 2038
static void ath10k_tx_h_update_wep_key(struct ieee80211_vif *vif,
				       struct ieee80211_key_conf *key,
				       struct sk_buff *skb)
2039 2040 2041 2042 2043 2044 2045 2046 2047 2048 2049 2050 2051 2052 2053
{
	struct ath10k_vif *arvif = ath10k_vif_to_arvif(vif);
	struct ath10k *ar = arvif->ar;
	struct ieee80211_hdr *hdr = (struct ieee80211_hdr *)skb->data;

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

	if (!key)
		return;

	if (key->cipher != WLAN_CIPHER_SUITE_WEP40 &&
	    key->cipher != WLAN_CIPHER_SUITE_WEP104)
		return;

2054
	if (key->keyidx == arvif->def_wep_key_idx)
2055 2056
		return;

2057 2058 2059 2060 2061
	/* FIXME: Most likely a few frames will be TXed with an old key. Simply
	 * queueing frames until key index is updated is not an option because
	 * sk_buff may need more processing to be done, e.g. offchannel */
	arvif->def_wep_key_newidx = key->keyidx;
	ieee80211_queue_work(ar->hw, &arvif->wep_key_work);
2062 2063
}

M
Michal Kazior 已提交
2064 2065 2066
static void ath10k_tx_h_add_p2p_noa_ie(struct ath10k *ar,
				       struct ieee80211_vif *vif,
				       struct sk_buff *skb)
2067 2068 2069 2070 2071 2072 2073 2074 2075 2076 2077 2078 2079 2080 2081 2082 2083 2084 2085 2086 2087
{
	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
2088 2089 2090 2091 2092 2093 2094 2095 2096 2097 2098 2099
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);
}

2100 2101 2102
static void ath10k_tx_htt(struct ath10k *ar, struct sk_buff *skb)
{
	struct ieee80211_hdr *hdr = (struct ieee80211_hdr *)skb->data;
2103
	int ret = 0;
2104

M
Michal Kazior 已提交
2105 2106 2107 2108 2109 2110
	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;
	}

2111 2112 2113 2114 2115
	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) {
2116
				ath10k_warn(ar, "reached WMI management transmit queue limit\n");
2117 2118 2119 2120 2121 2122 2123 2124 2125 2126 2127 2128
				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)) {
2129 2130
		/* FW does not report tx status properly for NullFunc frames
		 * unless they are sent through mgmt tx path. mac80211 sends
2131 2132
		 * those frames when it detects link/beacon loss and depends
		 * on the tx status to be correct. */
2133
		ret = ath10k_htt_mgmt_tx(&ar->htt, skb);
2134
	} else {
2135
		ret = ath10k_htt_tx(&ar->htt, skb);
2136
	}
2137

M
Michal Kazior 已提交
2138
exit:
2139
	if (ret) {
2140 2141
		ath10k_warn(ar, "failed to transmit packet, dropping: %d\n",
			    ret);
2142 2143 2144 2145 2146 2147 2148 2149 2150 2151 2152 2153 2154 2155 2156 2157 2158 2159 2160 2161 2162 2163 2164 2165 2166 2167 2168 2169 2170 2171 2172 2173 2174 2175 2176 2177 2178 2179 2180 2181 2182
		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);

2183
		ath10k_dbg(ar, ATH10K_DBG_MAC, "mac offchannel skb %p\n",
2184 2185 2186 2187
			   skb);

		hdr = (struct ieee80211_hdr *)skb->data;
		peer_addr = ieee80211_get_DA(hdr);
2188
		vdev_id = ATH10K_SKB_CB(skb)->vdev_id;
2189 2190 2191 2192 2193 2194

		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
2195
			/* FIXME: should this use ath10k_warn()? */
2196
			ath10k_dbg(ar, ATH10K_DBG_MAC, "peer %pM on vdev %d already present\n",
2197 2198 2199 2200 2201
				   peer_addr, vdev_id);

		if (!peer) {
			ret = ath10k_peer_create(ar, vdev_id, peer_addr);
			if (ret)
2202
				ath10k_warn(ar, "failed to create peer %pM on vdev %d: %d\n",
2203 2204 2205 2206
					    peer_addr, vdev_id, ret);
		}

		spin_lock_bh(&ar->data_lock);
2207
		reinit_completion(&ar->offchan_tx_completed);
2208 2209 2210 2211 2212 2213 2214 2215
		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);
		if (ret <= 0)
2216
			ath10k_warn(ar, "timed out waiting for offchannel skb %p\n",
2217 2218 2219 2220 2221
				    skb);

		if (!peer) {
			ret = ath10k_peer_delete(ar, vdev_id, peer_addr);
			if (ret)
2222
				ath10k_warn(ar, "failed to delete peer %pM on vdev %d: %d\n",
2223 2224 2225 2226 2227 2228 2229
					    peer_addr, vdev_id, ret);
		}

		mutex_unlock(&ar->conf_mutex);
	}
}

2230 2231 2232 2233 2234 2235 2236 2237 2238 2239 2240 2241 2242 2243 2244 2245 2246 2247 2248 2249 2250 2251 2252 2253 2254
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);
2255
		if (ret) {
2256
			ath10k_warn(ar, "failed to transmit management frame via WMI: %d\n",
2257
				    ret);
2258 2259
			ieee80211_free_txskb(ar->hw, skb);
		}
2260 2261 2262
	}
}

2263 2264 2265 2266
/************/
/* Scanning */
/************/

2267
void __ath10k_scan_finish(struct ath10k *ar)
2268
{
2269
	lockdep_assert_held(&ar->data_lock);
2270

2271 2272 2273 2274 2275 2276
	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);
2277 2278
	case ATH10K_SCAN_ABORTING:
		if (!ar->scan.is_roc)
2279 2280 2281 2282 2283 2284 2285 2286 2287 2288 2289
			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;
2290
	}
2291
}
2292

2293 2294 2295 2296
void ath10k_scan_finish(struct ath10k *ar)
{
	spin_lock_bh(&ar->data_lock);
	__ath10k_scan_finish(ar);
2297 2298 2299
	spin_unlock_bh(&ar->data_lock);
}

2300
static int ath10k_scan_stop(struct ath10k *ar)
2301 2302 2303 2304 2305 2306 2307 2308 2309 2310 2311 2312
{
	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) {
2313
		ath10k_warn(ar, "failed to stop wmi scan: %d\n", ret);
2314
		goto out;
2315 2316 2317
	}

	ret = wait_for_completion_timeout(&ar->scan.completed, 3*HZ);
2318
	if (ret == 0) {
2319
		ath10k_warn(ar, "failed to receive scan abortion completion: timed out\n");
2320 2321 2322 2323
		ret = -ETIMEDOUT;
	} else if (ret > 0) {
		ret = 0;
	}
2324

2325 2326 2327 2328 2329 2330 2331 2332 2333 2334 2335 2336 2337 2338 2339 2340 2341 2342 2343 2344 2345
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);
2346 2347

	spin_lock_bh(&ar->data_lock);
2348 2349 2350 2351 2352 2353 2354 2355 2356

	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:
2357
		ath10k_warn(ar, "refusing scan abortion due to invalid scan state: %s (%d)\n",
2358 2359 2360 2361 2362 2363 2364 2365 2366
			    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)
2367
			ath10k_warn(ar, "failed to abort scan: %d\n", ret);
2368 2369 2370

		spin_lock_bh(&ar->data_lock);
		break;
2371
	}
2372

2373
	spin_unlock_bh(&ar->data_lock);
2374
}
2375

2376 2377 2378 2379 2380 2381 2382 2383
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);
2384 2385 2386 2387 2388 2389 2390 2391 2392 2393 2394 2395 2396 2397 2398
}

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) {
2399 2400
		ret = ath10k_scan_stop(ar);
		if (ret)
2401
			ath10k_warn(ar, "failed to stop scan: %d\n", ret);
2402 2403

		return -ETIMEDOUT;
2404 2405
	}

2406 2407 2408
	/* 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));
2409 2410 2411 2412 2413 2414 2415 2416 2417 2418 2419
	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
2420
	struct ath10k *ar = hw->priv;
2421
	struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
M
Michal Kazior 已提交
2422 2423
	struct ieee80211_vif *vif = info->control.vif;
	struct ieee80211_key_conf *key = info->control.hw_key;
2424 2425 2426 2427
	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)
2428
		ath10k_dbg(ar, ATH10K_DBG_MAC, "IEEE80211_TX_CTL_NO_CCK_RATE\n");
2429

M
Michal Kazior 已提交
2430 2431
	ATH10K_SKB_CB(skb)->htt.is_offchan = false;
	ATH10K_SKB_CB(skb)->htt.tid = ath10k_tx_h_get_tid(hdr);
2432
	ATH10K_SKB_CB(skb)->vdev_id = ath10k_tx_h_get_vdev_id(ar, vif);
2433

2434
	/* it makes no sense to process injected frames like that */
M
Michal Kazior 已提交
2435 2436 2437 2438 2439
	if (vif && vif->type != NL80211_IFTYPE_MONITOR) {
		ath10k_tx_h_nwifi(hw, skb);
		ath10k_tx_h_update_wep_key(vif, key, skb);
		ath10k_tx_h_add_p2p_noa_ie(ar, vif, skb);
		ath10k_tx_h_seq_no(vif, skb);
2440
	}
2441 2442 2443

	if (info->flags & IEEE80211_TX_CTL_TX_OFFCHAN) {
		spin_lock_bh(&ar->data_lock);
M
Michal Kazior 已提交
2444
		ATH10K_SKB_CB(skb)->htt.freq = ar->scan.roc_freq;
2445
		ATH10K_SKB_CB(skb)->vdev_id = ar->scan.vdev_id;
2446 2447
		spin_unlock_bh(&ar->data_lock);

M
Michal Kazior 已提交
2448 2449 2450
		if (ath10k_mac_need_offchan_tx_work(ar)) {
			ATH10K_SKB_CB(skb)->htt.freq = 0;
			ATH10K_SKB_CB(skb)->htt.is_offchan = true;
2451

M
Michal Kazior 已提交
2452 2453 2454 2455 2456 2457 2458
			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;
		}
2459 2460 2461 2462 2463
	}

	ath10k_tx_htt(ar, skb);
}

2464
/* Must not be called with conf_mutex held as workers can use that also. */
M
Michal Kazior 已提交
2465
void ath10k_drain_tx(struct ath10k *ar)
2466 2467 2468 2469 2470 2471 2472 2473 2474 2475 2476
{
	/* 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);
}

2477
void ath10k_halt(struct ath10k *ar)
2478
{
2479 2480
	struct ath10k_vif *arvif;

2481 2482
	lockdep_assert_held(&ar->conf_mutex);

2483 2484 2485 2486 2487
	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
2488
		ath10k_monitor_stop(ar);
2489 2490

	ar->monitor_started = false;
M
Michal Kazior 已提交
2491

2492
	ath10k_scan_finish(ar);
2493 2494 2495 2496 2497
	ath10k_peer_cleanup_all(ar);
	ath10k_core_stop(ar);
	ath10k_hif_power_down(ar);

	spin_lock_bh(&ar->data_lock);
2498 2499
	list_for_each_entry(arvif, &ar->arvifs, list)
		ath10k_mac_vif_beacon_cleanup(arvif);
2500 2501 2502
	spin_unlock_bh(&ar->data_lock);
}

2503 2504 2505 2506 2507 2508 2509 2510 2511 2512 2513 2514 2515 2516 2517 2518 2519 2520 2521
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;
}

2522 2523 2524 2525 2526 2527 2528 2529 2530 2531 2532 2533 2534
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);
}

2535 2536 2537 2538 2539 2540
static int __ath10k_set_antenna(struct ath10k *ar, u32 tx_ant, u32 rx_ant)
{
	int ret;

	lockdep_assert_held(&ar->conf_mutex);

2541 2542 2543
	ath10k_check_chain_mask(ar, tx_ant, "tx");
	ath10k_check_chain_mask(ar, rx_ant, "rx");

2544 2545 2546 2547 2548 2549 2550 2551 2552 2553
	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) {
2554
		ath10k_warn(ar, "failed to set tx-chainmask: %d, req 0x%x\n",
2555 2556 2557 2558 2559 2560 2561
			    ret, tx_ant);
		return ret;
	}

	ret = ath10k_wmi_pdev_set_param(ar, ar->wmi.pdev_param->rx_chain_mask,
					rx_ant);
	if (ret) {
2562
		ath10k_warn(ar, "failed to set rx-chainmask: %d, req 0x%x\n",
2563 2564 2565 2566 2567 2568 2569 2570 2571 2572 2573 2574 2575 2576 2577 2578 2579 2580
			    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;
}

2581 2582 2583
static int ath10k_start(struct ieee80211_hw *hw)
{
	struct ath10k *ar = hw->priv;
2584
	int ret = 0;
2585

2586 2587 2588 2589 2590 2591 2592
	/*
	 * 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
2593 2594
	mutex_lock(&ar->conf_mutex);

2595 2596 2597 2598 2599 2600 2601 2602 2603 2604 2605 2606
	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);
2607
		ret = -EINVAL;
2608
		goto err;
K
Kalle Valo 已提交
2609 2610 2611
	case ATH10K_STATE_UTF:
		ret = -EBUSY;
		goto err;
2612 2613 2614 2615
	}

	ret = ath10k_hif_power_up(ar);
	if (ret) {
2616
		ath10k_err(ar, "Could not init hif: %d\n", ret);
2617
		goto err_off;
2618 2619
	}

K
Kalle Valo 已提交
2620
	ret = ath10k_core_start(ar, ATH10K_FIRMWARE_MODE_NORMAL);
2621
	if (ret) {
2622
		ath10k_err(ar, "Could not init core: %d\n", ret);
2623
		goto err_power_down;
2624 2625
	}

2626
	ret = ath10k_wmi_pdev_set_param(ar, ar->wmi.pdev_param->pmf_qos, 1);
2627
	if (ret) {
2628
		ath10k_warn(ar, "failed to enable PMF QOS: %d\n", ret);
2629 2630
		goto err_core_stop;
	}
2631

2632
	ret = ath10k_wmi_pdev_set_param(ar, ar->wmi.pdev_param->dynamic_bw, 1);
2633
	if (ret) {
2634
		ath10k_warn(ar, "failed to enable dynamic BW: %d\n", ret);
2635 2636
		goto err_core_stop;
	}
2637

2638 2639 2640 2641
	if (ar->cfg_tx_chainmask)
		__ath10k_set_antenna(ar, ar->cfg_tx_chainmask,
				     ar->cfg_rx_chainmask);

2642 2643 2644 2645 2646 2647 2648 2649 2650 2651 2652 2653
	/*
	 * 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) {
2654
		ath10k_warn(ar, "failed to set arp ac override parameter: %d\n",
2655
			    ret);
2656
		goto err_core_stop;
2657 2658
	}

2659
	ar->num_started_vdevs = 0;
2660 2661
	ath10k_regd_update(ar);

2662 2663
	ath10k_spectral_start(ar);

2664 2665 2666 2667 2668 2669 2670 2671 2672 2673 2674 2675 2676
	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
2677
	mutex_unlock(&ar->conf_mutex);
2678
	return ret;
2679 2680 2681 2682 2683 2684
}

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

2685 2686
	ath10k_drain_tx(ar);

M
Michal Kazior 已提交
2687
	mutex_lock(&ar->conf_mutex);
2688
	if (ar->state != ATH10K_STATE_OFF) {
2689
		ath10k_halt(ar);
2690 2691
		ar->state = ATH10K_STATE_OFF;
	}
M
Michal Kazior 已提交
2692 2693
	mutex_unlock(&ar->conf_mutex);

2694
	cancel_delayed_work_sync(&ar->scan.timeout);
2695
	cancel_work_sync(&ar->restart_work);
2696 2697
}

2698
static int ath10k_config_ps(struct ath10k *ar)
2699
{
2700 2701
	struct ath10k_vif *arvif;
	int ret = 0;
2702 2703 2704

	lockdep_assert_held(&ar->conf_mutex);

2705 2706 2707
	list_for_each_entry(arvif, &ar->arvifs, list) {
		ret = ath10k_mac_vif_setup_ps(arvif);
		if (ret) {
2708
			ath10k_warn(ar, "failed to setup powersave: %d\n", ret);
2709 2710 2711
			break;
		}
	}
2712

2713
	return ret;
2714 2715
}

2716 2717 2718 2719 2720 2721 2722 2723 2724 2725 2726 2727 2728 2729 2730 2731 2732 2733 2734 2735 2736 2737 2738 2739 2740 2741 2742 2743 2744 2745
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);

2746
	ath10k_dbg(ar, ATH10K_DBG_MAC,
2747 2748 2749 2750 2751 2752 2753 2754
		   "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
2755
	if (ar->monitor_started)
2756
		ath10k_monitor_stop(ar);
2757 2758 2759 2760 2761

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

2762 2763 2764
		if (!arvif->is_up)
			continue;

2765 2766 2767
		if (arvif->vdev_type == WMI_VDEV_TYPE_MONITOR)
			continue;

2768
		ret = ath10k_wmi_vdev_down(ar, arvif->vdev_id);
2769
		if (ret) {
2770
			ath10k_warn(ar, "failed to down vdev %d: %d\n",
2771 2772 2773 2774 2775
				    arvif->vdev_id, ret);
			continue;
		}
	}

2776
	/* all vdevs are downed now - attempt to restart and re-up them */
2777 2778 2779 2780 2781 2782 2783 2784

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

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

2785
		ret = ath10k_vdev_restart(arvif);
2786
		if (ret) {
2787
			ath10k_warn(ar, "failed to restart vdev %d: %d\n",
2788 2789 2790 2791 2792 2793 2794 2795 2796 2797
				    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) {
2798
			ath10k_warn(ar, "failed to bring vdev up %d: %d\n",
2799 2800 2801 2802 2803
				    arvif->vdev_id, ret);
			continue;
		}
	}

2804
	ath10k_monitor_recalc(ar);
2805 2806
}

2807 2808 2809 2810 2811 2812 2813 2814 2815 2816 2817 2818 2819 2820 2821 2822 2823 2824 2825 2826 2827 2828 2829 2830 2831 2832 2833 2834 2835 2836 2837 2838 2839 2840 2841 2842 2843 2844 2845 2846 2847 2848 2849 2850 2851 2852 2853 2854 2855 2856 2857 2858 2859 2860 2861 2862 2863
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;
}

2864 2865
static int ath10k_config(struct ieee80211_hw *hw, u32 changed)
{
2866 2867 2868 2869 2870 2871 2872
	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) {
2873
		ath10k_dbg(ar, ATH10K_DBG_MAC,
2874
			   "mac config channel %dMHz flags 0x%x radar %d\n",
2875
			   conf->chandef.chan->center_freq,
2876 2877
			   conf->chandef.chan->flags,
			   conf->radar_enabled);
2878

2879 2880 2881
		spin_lock_bh(&ar->data_lock);
		ar->rx_channel = conf->chandef.chan;
		spin_unlock_bh(&ar->data_lock);
2882

2883 2884
		ar->radar_enabled = conf->radar_enabled;
		ath10k_recalc_radar_detection(ar);
2885 2886 2887 2888 2889

		if (!cfg80211_chandef_identical(&ar->chandef, &conf->chandef)) {
			ar->chandef = conf->chandef;
			ath10k_config_chan(ar);
		}
2890 2891
	}

2892 2893
	if (changed & IEEE80211_CONF_CHANGE_PS)
		ath10k_config_ps(ar);
2894 2895

	if (changed & IEEE80211_CONF_CHANGE_MONITOR) {
2896 2897 2898 2899
		ar->monitor = conf->flags & IEEE80211_CONF_MONITOR;
		ret = ath10k_monitor_recalc(ar);
		if (ret)
			ath10k_warn(ar, "failed to recalc monitor: %d\n", ret);
2900 2901 2902 2903 2904 2905
	}

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

2906 2907 2908 2909 2910 2911 2912 2913 2914 2915 2916
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;
}

2917 2918 2919 2920 2921 2922 2923 2924 2925 2926 2927 2928 2929 2930
/*
 * 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;
2931
	u32 value;
2932
	int bit;
2933
	u32 vdev_param;
2934 2935 2936

	mutex_lock(&ar->conf_mutex);

2937 2938
	memset(arvif, 0, sizeof(*arvif));

2939 2940 2941
	arvif->ar = ar;
	arvif->vif = vif;

2942
	INIT_WORK(&arvif->wep_key_work, ath10k_tx_wep_key_work);
2943
	INIT_LIST_HEAD(&arvif->list);
2944

B
Ben Greear 已提交
2945
	if (ar->free_vdev_map == 0) {
2946
		ath10k_warn(ar, "Free vdev map is empty, no more interfaces allowed.\n");
2947
		ret = -EBUSY;
2948
		goto err;
2949
	}
B
Ben Greear 已提交
2950
	bit = __ffs64(ar->free_vdev_map);
2951

B
Ben Greear 已提交
2952 2953
	ath10k_dbg(ar, ATH10K_DBG_MAC, "mac create vdev %i map %llx\n",
		   bit, ar->free_vdev_map);
2954

B
Ben Greear 已提交
2955
	arvif->vdev_id = bit;
2956 2957 2958 2959 2960 2961 2962 2963 2964 2965 2966 2967 2968 2969 2970 2971 2972 2973 2974 2975 2976 2977 2978 2979 2980 2981 2982 2983 2984
	arvif->vdev_subtype = WMI_VDEV_SUBTYPE_NONE;

	if (ar->p2p)
		arvif->vdev_subtype = WMI_VDEV_SUBTYPE_P2P_DEVICE;

	switch (vif->type) {
	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;
	}

2985 2986 2987 2988 2989 2990 2991 2992 2993 2994 2995 2996 2997 2998 2999 3000 3001 3002 3003 3004 3005
	/* 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,
3006
							GFP_ATOMIC);
3007 3008 3009 3010 3011 3012 3013 3014 3015 3016 3017
		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");
3018 3019 3020 3021

	ret = ath10k_wmi_vdev_create(ar, arvif->vdev_id, arvif->vdev_type,
				     arvif->vdev_subtype, vif->addr);
	if (ret) {
3022
		ath10k_warn(ar, "failed to create WMI vdev %i: %d\n",
3023
			    arvif->vdev_id, ret);
3024
		goto err;
3025 3026
	}

B
Ben Greear 已提交
3027
	ar->free_vdev_map &= ~(1LL << arvif->vdev_id);
M
Michal Kazior 已提交
3028
	list_add(&arvif->list, &ar->arvifs);
3029

3030 3031
	vdev_param = ar->wmi.vdev_param->def_keyid;
	ret = ath10k_wmi_vdev_set_param(ar, 0, vdev_param,
3032
					arvif->def_wep_key_idx);
3033
	if (ret) {
3034
		ath10k_warn(ar, "failed to set vdev %i default key id: %d\n",
3035
			    arvif->vdev_id, ret);
3036 3037
		goto err_vdev_delete;
	}
3038

3039 3040
	vdev_param = ar->wmi.vdev_param->tx_encap_type;
	ret = ath10k_wmi_vdev_set_param(ar, arvif->vdev_id, vdev_param,
3041
					ATH10K_HW_TXRX_NATIVE_WIFI);
3042
	/* 10.X firmware does not support this VDEV parameter. Do not warn */
3043
	if (ret && ret != -EOPNOTSUPP) {
3044
		ath10k_warn(ar, "failed to set vdev %i TX encapsulation: %d\n",
3045
			    arvif->vdev_id, ret);
3046 3047
		goto err_vdev_delete;
	}
3048

3049 3050 3051 3052 3053 3054 3055 3056 3057 3058 3059 3060 3061 3062
	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;
		}
	}

3063 3064 3065
	if (arvif->vdev_type == WMI_VDEV_TYPE_AP) {
		ret = ath10k_peer_create(ar, arvif->vdev_id, vif->addr);
		if (ret) {
3066
			ath10k_warn(ar, "failed to create vdev %i peer for AP: %d\n",
3067
				    arvif->vdev_id, ret);
3068
			goto err_vdev_delete;
3069
		}
3070

3071 3072
		ret = ath10k_mac_set_kickout(arvif);
		if (ret) {
3073
			ath10k_warn(ar, "failed to set vdev %i kickout parameters: %d\n",
3074
				    arvif->vdev_id, ret);
3075 3076
			goto err_peer_delete;
		}
3077 3078 3079 3080 3081 3082 3083
	}

	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);
3084
		if (ret) {
3085
			ath10k_warn(ar, "failed to set vdev %i RX wake policy: %d\n",
3086
				    arvif->vdev_id, ret);
3087 3088
			goto err_peer_delete;
		}
3089

M
Michal Kazior 已提交
3090
		ret = ath10k_mac_vif_recalc_ps_wake_threshold(arvif);
3091
		if (ret) {
M
Michal Kazior 已提交
3092
			ath10k_warn(ar, "failed to recalc ps wake threshold on vdev %i: %d\n",
3093
				    arvif->vdev_id, ret);
3094 3095
			goto err_peer_delete;
		}
3096

M
Michal Kazior 已提交
3097
		ret = ath10k_mac_vif_recalc_ps_poll_count(arvif);
3098
		if (ret) {
M
Michal Kazior 已提交
3099
			ath10k_warn(ar, "failed to recalc ps poll count on vdev %i: %d\n",
3100
				    arvif->vdev_id, ret);
3101 3102
			goto err_peer_delete;
		}
3103 3104
	}

3105
	ret = ath10k_mac_set_rts(arvif, ar->hw->wiphy->rts_threshold);
3106
	if (ret) {
3107
		ath10k_warn(ar, "failed to set rts threshold for vdev %d: %d\n",
3108
			    arvif->vdev_id, ret);
3109 3110
		goto err_peer_delete;
	}
3111

3112
	ret = ath10k_mac_set_frag(arvif, ar->hw->wiphy->frag_threshold);
3113
	if (ret) {
3114
		ath10k_warn(ar, "failed to set frag threshold for vdev %d: %d\n",
3115
			    arvif->vdev_id, ret);
3116 3117
		goto err_peer_delete;
	}
3118

3119 3120 3121 3122 3123 3124 3125
	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;
	}

3126
	mutex_unlock(&ar->conf_mutex);
3127 3128 3129 3130 3131 3132 3133 3134
	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
3135
	ar->free_vdev_map |= 1LL << arvif->vdev_id;
M
Michal Kazior 已提交
3136
	list_del(&arvif->list);
3137 3138

err:
3139 3140 3141 3142 3143 3144
	if (arvif->beacon_buf) {
		dma_free_coherent(ar->dev, IEEE80211_MAX_FRAME_LEN,
				  arvif->beacon_buf, arvif->beacon_paddr);
		arvif->beacon_buf = NULL;
	}

3145 3146
	mutex_unlock(&ar->conf_mutex);

3147 3148 3149 3150 3151 3152 3153 3154 3155 3156
	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;

3157 3158
	cancel_work_sync(&arvif->wep_key_work);

3159 3160
	mutex_lock(&ar->conf_mutex);

3161
	spin_lock_bh(&ar->data_lock);
3162
	ath10k_mac_vif_beacon_cleanup(arvif);
3163 3164
	spin_unlock_bh(&ar->data_lock);

3165 3166
	ret = ath10k_spectral_vif_stop(arvif);
	if (ret)
3167
		ath10k_warn(ar, "failed to stop spectral for vdev %i: %d\n",
3168 3169
			    arvif->vdev_id, ret);

B
Ben Greear 已提交
3170
	ar->free_vdev_map |= 1LL << arvif->vdev_id;
M
Michal Kazior 已提交
3171
	list_del(&arvif->list);
3172 3173 3174 3175

	if (arvif->vdev_type == WMI_VDEV_TYPE_AP) {
		ret = ath10k_peer_delete(arvif->ar, arvif->vdev_id, vif->addr);
		if (ret)
3176
			ath10k_warn(ar, "failed to remove peer for AP vdev %i: %d\n",
3177
				    arvif->vdev_id, ret);
3178 3179 3180 3181

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

3182
	ath10k_dbg(ar, ATH10K_DBG_MAC, "mac vdev %i delete (remove interface)\n",
K
Kalle Valo 已提交
3183 3184
		   arvif->vdev_id);

3185 3186
	ret = ath10k_wmi_vdev_delete(ar, arvif->vdev_id);
	if (ret)
3187
		ath10k_warn(ar, "failed to delete WMI vdev %i: %d\n",
3188
			    arvif->vdev_id, ret);
3189 3190 3191 3192 3193 3194 3195 3196 3197 3198 3199 3200 3201 3202 3203 3204 3205 3206 3207 3208 3209 3210 3211 3212 3213 3214 3215 3216 3217 3218 3219 3220 3221

	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;

3222 3223 3224
	ret = ath10k_monitor_recalc(ar);
	if (ret)
		ath10k_warn(ar, "failed to recalc montior: %d\n", ret);
3225 3226 3227 3228 3229 3230 3231 3232 3233 3234 3235 3236

	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;
3237
	u32 vdev_param, pdev_param, slottime, preamble;
3238 3239 3240 3241 3242 3243 3244 3245

	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;
3246 3247
		vdev_param = ar->wmi.vdev_param->beacon_interval;
		ret = ath10k_wmi_vdev_set_param(ar, arvif->vdev_id, vdev_param,
3248
						arvif->beacon_interval);
3249
		ath10k_dbg(ar, ATH10K_DBG_MAC,
K
Kalle Valo 已提交
3250 3251 3252
			   "mac vdev %d beacon_interval %d\n",
			   arvif->vdev_id, arvif->beacon_interval);

3253
		if (ret)
3254
			ath10k_warn(ar, "failed to set beacon interval for vdev %d: %i\n",
3255
				    arvif->vdev_id, ret);
3256 3257 3258
	}

	if (changed & BSS_CHANGED_BEACON) {
3259
		ath10k_dbg(ar, ATH10K_DBG_MAC,
K
Kalle Valo 已提交
3260 3261 3262
			   "vdev %d set beacon tx mode to staggered\n",
			   arvif->vdev_id);

3263 3264
		pdev_param = ar->wmi.pdev_param->beacon_tx_mode;
		ret = ath10k_wmi_pdev_set_param(ar, pdev_param,
3265 3266
						WMI_BEACON_STAGGERED_MODE);
		if (ret)
3267
			ath10k_warn(ar, "failed to set beacon mode for vdev %d: %i\n",
3268
				    arvif->vdev_id, ret);
3269 3270
	}

3271
	if (changed & BSS_CHANGED_BEACON_INFO) {
3272 3273
		arvif->dtim_period = info->dtim_period;

3274
		ath10k_dbg(ar, ATH10K_DBG_MAC,
K
Kalle Valo 已提交
3275 3276 3277
			   "mac vdev %d dtim_period %d\n",
			   arvif->vdev_id, arvif->dtim_period);

3278 3279
		vdev_param = ar->wmi.vdev_param->dtim_period;
		ret = ath10k_wmi_vdev_set_param(ar, arvif->vdev_id, vdev_param,
3280 3281
						arvif->dtim_period);
		if (ret)
3282
			ath10k_warn(ar, "failed to set dtim period for vdev %d: %i\n",
3283
				    arvif->vdev_id, ret);
3284 3285 3286 3287 3288 3289 3290 3291 3292 3293
	}

	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;
	}

3294 3295
	if (changed & BSS_CHANGED_BSSID && !is_zero_ether_addr(info->bssid))
		ether_addr_copy(arvif->bssid, info->bssid);
3296 3297 3298 3299 3300

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

	if (changed & BSS_CHANGED_ERP_CTS_PROT) {
3301
		arvif->use_cts_prot = info->use_cts_prot;
3302
		ath10k_dbg(ar, ATH10K_DBG_MAC, "mac vdev %d cts_prot %d\n",
3303
			   arvif->vdev_id, info->use_cts_prot);
K
Kalle Valo 已提交
3304

3305
		ret = ath10k_recalc_rtscts_prot(arvif);
3306
		if (ret)
3307
			ath10k_warn(ar, "failed to recalculate rts/cts prot for vdev %d: %d\n",
3308
				    arvif->vdev_id, ret);
3309 3310 3311 3312 3313 3314 3315 3316 3317
	}

	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 */

3318
		ath10k_dbg(ar, ATH10K_DBG_MAC, "mac vdev %d slot_time %d\n",
K
Kalle Valo 已提交
3319 3320
			   arvif->vdev_id, slottime);

3321 3322
		vdev_param = ar->wmi.vdev_param->slot_time;
		ret = ath10k_wmi_vdev_set_param(ar, arvif->vdev_id, vdev_param,
3323 3324
						slottime);
		if (ret)
3325
			ath10k_warn(ar, "failed to set erp slot for vdev %d: %i\n",
3326
				    arvif->vdev_id, ret);
3327 3328 3329 3330 3331 3332 3333 3334
	}

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

3335
		ath10k_dbg(ar, ATH10K_DBG_MAC,
K
Kalle Valo 已提交
3336 3337 3338
			   "mac vdev %d preamble %dn",
			   arvif->vdev_id, preamble);

3339 3340
		vdev_param = ar->wmi.vdev_param->preamble;
		ret = ath10k_wmi_vdev_set_param(ar, arvif->vdev_id, vdev_param,
3341 3342
						preamble);
		if (ret)
3343
			ath10k_warn(ar, "failed to set preamble for vdev %d: %i\n",
3344
				    arvif->vdev_id, ret);
3345 3346 3347
	}

	if (changed & BSS_CHANGED_ASSOC) {
3348 3349 3350 3351 3352 3353 3354
		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);
3355
			ath10k_bss_assoc(hw, vif, info);
3356
			ath10k_monitor_recalc(ar);
3357 3358
		} else {
			ath10k_bss_disassoc(hw, vif);
3359
		}
3360 3361
	}

3362 3363 3364 3365 3366 3367 3368 3369 3370 3371
	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);
	}

3372 3373 3374 3375 3376
	mutex_unlock(&ar->conf_mutex);
}

static int ath10k_hw_scan(struct ieee80211_hw *hw,
			  struct ieee80211_vif *vif,
3377
			  struct ieee80211_scan_request *hw_req)
3378 3379 3380
{
	struct ath10k *ar = hw->priv;
	struct ath10k_vif *arvif = ath10k_vif_to_arvif(vif);
3381
	struct cfg80211_scan_request *req = &hw_req->req;
3382 3383 3384 3385 3386 3387 3388
	struct wmi_start_scan_arg arg;
	int ret = 0;
	int i;

	mutex_lock(&ar->conf_mutex);

	spin_lock_bh(&ar->data_lock);
3389 3390 3391 3392 3393 3394 3395 3396 3397 3398 3399 3400
	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:
3401
		ret = -EBUSY;
3402
		break;
3403 3404 3405
	}
	spin_unlock_bh(&ar->data_lock);

3406 3407 3408
	if (ret)
		goto exit;

3409 3410 3411 3412 3413 3414 3415 3416 3417 3418 3419 3420 3421 3422 3423 3424 3425 3426 3427
	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;
		}
3428 3429
	} else {
		arg.scan_ctrl_flags |= WMI_SCAN_FLAG_PASSIVE;
3430 3431 3432 3433 3434 3435 3436 3437 3438 3439
	}

	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) {
3440
		ath10k_warn(ar, "failed to start hw scan: %d\n", ret);
3441
		spin_lock_bh(&ar->data_lock);
3442
		ar->scan.state = ATH10K_SCAN_IDLE;
3443 3444 3445 3446 3447 3448 3449 3450 3451 3452 3453 3454 3455 3456
		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);
3457
	ath10k_scan_abort(ar);
3458
	mutex_unlock(&ar->conf_mutex);
3459 3460

	cancel_delayed_work_sync(&ar->scan.timeout);
3461 3462
}

3463 3464 3465 3466 3467 3468 3469 3470 3471 3472 3473 3474 3475 3476 3477 3478 3479 3480 3481 3482 3483 3484 3485 3486 3487 3488 3489 3490 3491 3492 3493 3494 3495 3496
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)
3497
		ath10k_warn(ar, "failed to set vdev %i group key as default key: %d\n",
3498
			    arvif->vdev_id, ret);
3499 3500
}

3501 3502 3503 3504 3505 3506 3507 3508 3509 3510 3511 3512 3513 3514 3515 3516 3517 3518 3519 3520 3521 3522 3523 3524 3525 3526 3527 3528 3529 3530 3531 3532 3533 3534
static int ath10k_set_key(struct ieee80211_hw *hw, enum set_key_cmd cmd,
			  struct ieee80211_vif *vif, struct ieee80211_sta *sta,
			  struct ieee80211_key_conf *key)
{
	struct ath10k *ar = hw->priv;
	struct ath10k_vif *arvif = ath10k_vif_to_arvif(vif);
	struct ath10k_peer *peer;
	const u8 *peer_addr;
	bool is_wep = key->cipher == WLAN_CIPHER_SUITE_WEP40 ||
		      key->cipher == WLAN_CIPHER_SUITE_WEP104;
	int ret = 0;

	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) {
3535
			ath10k_warn(ar, "failed to install key for non-existent peer %pM\n",
3536 3537 3538 3539 3540 3541 3542 3543 3544 3545 3546 3547 3548 3549 3550 3551 3552 3553 3554 3555 3556 3557
				    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);
	}

	ret = ath10k_install_key(arvif, key, cmd, peer_addr);
	if (ret) {
3558
		ath10k_warn(ar, "failed to install key for vdev %i peer %pM: %d\n",
3559
			    arvif->vdev_id, peer_addr, ret);
3560 3561 3562
		goto exit;
	}

3563 3564
	ath10k_set_key_h_def_keyidx(ar, arvif, cmd, key);

3565 3566 3567 3568 3569 3570 3571 3572
	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 */
3573
		ath10k_warn(ar, "Peer %pM disappeared!\n", peer_addr);
3574 3575 3576 3577 3578 3579 3580
	spin_unlock_bh(&ar->data_lock);

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

3581 3582 3583 3584 3585 3586 3587 3588 3589 3590 3591 3592 3593 3594 3595 3596 3597 3598 3599 3600 3601 3602 3603 3604 3605 3606 3607 3608
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) {
3609
		ath10k_dbg(ar, ATH10K_DBG_MAC, "mac update sta %pM peer bw %d\n",
3610 3611 3612 3613 3614
			   sta->addr, bw);

		err = ath10k_wmi_peer_set_param(ar, arvif->vdev_id, sta->addr,
						WMI_PEER_CHAN_WIDTH, bw);
		if (err)
3615
			ath10k_warn(ar, "failed to update STA %pM peer bw %d: %d\n",
3616 3617 3618 3619
				    sta->addr, bw, err);
	}

	if (changed & IEEE80211_RC_NSS_CHANGED) {
3620
		ath10k_dbg(ar, ATH10K_DBG_MAC, "mac update sta %pM nss %d\n",
3621 3622 3623 3624 3625
			   sta->addr, nss);

		err = ath10k_wmi_peer_set_param(ar, arvif->vdev_id, sta->addr,
						WMI_PEER_NSS, nss);
		if (err)
3626
			ath10k_warn(ar, "failed to update STA %pM nss %d: %d\n",
3627 3628 3629 3630
				    sta->addr, nss, err);
	}

	if (changed & IEEE80211_RC_SMPS_CHANGED) {
3631
		ath10k_dbg(ar, ATH10K_DBG_MAC, "mac update sta %pM smps %d\n",
3632 3633 3634 3635 3636
			   sta->addr, smps);

		err = ath10k_wmi_peer_set_param(ar, arvif->vdev_id, sta->addr,
						WMI_PEER_SMPS_STATE, smps);
		if (err)
3637
			ath10k_warn(ar, "failed to update STA %pM smps %d: %d\n",
3638 3639 3640
				    sta->addr, smps, err);
	}

3641
	if (changed & IEEE80211_RC_SUPP_RATES_CHANGED) {
3642
		ath10k_dbg(ar, ATH10K_DBG_MAC, "mac update sta %pM supp rates\n",
3643 3644
			   sta->addr);

M
Michal Kazior 已提交
3645
		err = ath10k_station_assoc(ar, arvif->vif, sta, true);
3646
		if (err)
3647
			ath10k_warn(ar, "failed to reassociate station: %pM\n",
3648 3649 3650
				    sta->addr);
	}

3651 3652 3653
	mutex_unlock(&ar->conf_mutex);
}

3654 3655 3656 3657 3658 3659 3660 3661 3662 3663 3664 3665 3666 3667 3668 3669 3670 3671 3672 3673 3674 3675 3676 3677 3678 3679 3680 3681 3682 3683 3684
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--;
}

3685 3686 3687 3688 3689 3690 3691 3692
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);
3693
	struct ath10k_sta *arsta = (struct ath10k_sta *)sta->drv_priv;
3694 3695
	int ret = 0;

3696 3697 3698 3699 3700 3701 3702
	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);
	}

3703 3704 3705 3706 3707
	/* 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);

3708 3709 3710
	mutex_lock(&ar->conf_mutex);

	if (old_state == IEEE80211_STA_NOTEXIST &&
3711
	    new_state == IEEE80211_STA_NONE) {
3712 3713 3714
		/*
		 * New station addition.
		 */
3715 3716 3717 3718 3719
		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);
3720

3721 3722 3723 3724
		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);
3725 3726 3727
			goto exit;
		}

3728
		ret = ath10k_peer_create(ar, arvif->vdev_id, sta->addr);
M
Michal Kazior 已提交
3729
		if (ret) {
3730
			ath10k_warn(ar, "failed to add peer %pM for vdev %d when adding a new sta: %i\n",
3731
				    sta->addr, arvif->vdev_id, ret);
3732
			ath10k_mac_dec_num_stations(arvif);
M
Michal Kazior 已提交
3733 3734
			goto exit;
		}
3735 3736 3737 3738 3739 3740 3741 3742 3743 3744

		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));
3745
				ath10k_mac_dec_num_stations(arvif);
3746 3747 3748 3749 3750
				goto exit;
			}

			arvif->is_started = true;
		}
3751 3752 3753 3754 3755
	} else if ((old_state == IEEE80211_STA_NONE &&
		    new_state == IEEE80211_STA_NOTEXIST)) {
		/*
		 * Existing station deletion.
		 */
3756
		ath10k_dbg(ar, ATH10K_DBG_MAC,
K
Kalle Valo 已提交
3757 3758
			   "mac vdev %d peer delete %pM (sta gone)\n",
			   arvif->vdev_id, sta->addr);
3759 3760 3761 3762 3763 3764 3765 3766 3767 3768 3769 3770

		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;
		}

3771 3772
		ret = ath10k_peer_delete(ar, arvif->vdev_id, sta->addr);
		if (ret)
3773
			ath10k_warn(ar, "failed to delete peer %pM for vdev %d: %i\n",
3774
				    sta->addr, arvif->vdev_id, ret);
3775

3776
		ath10k_mac_dec_num_stations(arvif);
3777 3778 3779 3780 3781 3782 3783
	} else if (old_state == IEEE80211_STA_AUTH &&
		   new_state == IEEE80211_STA_ASSOC &&
		   (vif->type == NL80211_IFTYPE_AP ||
		    vif->type == NL80211_IFTYPE_ADHOC)) {
		/*
		 * New association.
		 */
3784
		ath10k_dbg(ar, ATH10K_DBG_MAC, "mac sta %pM associated\n",
K
Kalle Valo 已提交
3785 3786
			   sta->addr);

M
Michal Kazior 已提交
3787
		ret = ath10k_station_assoc(ar, vif, sta, false);
3788
		if (ret)
3789
			ath10k_warn(ar, "failed to associate station %pM for vdev %i: %i\n",
3790
				    sta->addr, arvif->vdev_id, ret);
3791 3792 3793 3794 3795 3796 3797
	} else if (old_state == IEEE80211_STA_ASSOC &&
		   new_state == IEEE80211_STA_AUTH &&
		   (vif->type == NL80211_IFTYPE_AP ||
		    vif->type == NL80211_IFTYPE_ADHOC)) {
		/*
		 * Disassociation.
		 */
3798
		ath10k_dbg(ar, ATH10K_DBG_MAC, "mac sta %pM disassociated\n",
K
Kalle Valo 已提交
3799 3800
			   sta->addr);

M
Michal Kazior 已提交
3801
		ret = ath10k_station_disassoc(ar, vif, sta);
3802
		if (ret)
3803
			ath10k_warn(ar, "failed to disassociate station: %pM vdev %i: %i\n",
3804
				    sta->addr, arvif->vdev_id, ret);
3805
	}
3806
exit:
3807 3808 3809 3810 3811
	mutex_unlock(&ar->conf_mutex);
	return ret;
}

static int ath10k_conf_tx_uapsd(struct ath10k *ar, struct ieee80211_vif *vif,
3812
				u16 ac, bool enable)
3813 3814 3815 3816 3817
{
	struct ath10k_vif *arvif = ath10k_vif_to_arvif(vif);
	u32 value = 0;
	int ret = 0;

M
Michal Kazior 已提交
3818 3819
	lockdep_assert_held(&ar->conf_mutex);

3820 3821 3822 3823 3824 3825 3826 3827 3828 3829 3830 3831 3832 3833 3834 3835 3836 3837 3838 3839 3840 3841 3842 3843 3844 3845 3846 3847 3848 3849 3850
	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;
		break;
	case IEEE80211_AC_VI:
		value = WMI_STA_PS_UAPSD_AC2_DELIVERY_EN |
			WMI_STA_PS_UAPSD_AC2_TRIGGER_EN;
		break;
	case IEEE80211_AC_BE:
		value = WMI_STA_PS_UAPSD_AC1_DELIVERY_EN |
			WMI_STA_PS_UAPSD_AC1_TRIGGER_EN;
		break;
	case IEEE80211_AC_BK:
		value = WMI_STA_PS_UAPSD_AC0_DELIVERY_EN |
			WMI_STA_PS_UAPSD_AC0_TRIGGER_EN;
		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) {
3851
		ath10k_warn(ar, "failed to set uapsd params: %d\n", ret);
3852 3853 3854 3855 3856 3857 3858 3859 3860 3861 3862 3863
		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)
3864
		ath10k_warn(ar, "failed to set rx wake param: %d\n", ret);
3865

M
Michal Kazior 已提交
3866 3867 3868 3869 3870 3871 3872 3873 3874 3875 3876 3877 3878 3879
	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;
	}

3880 3881 3882 3883 3884 3885 3886 3887 3888 3889 3890 3891 3892 3893 3894 3895 3896 3897 3898 3899 3900 3901 3902 3903 3904 3905 3906 3907 3908 3909 3910 3911 3912 3913 3914 3915 3916 3917 3918 3919 3920 3921 3922 3923 3924 3925 3926 3927
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;
	struct wmi_wmm_params_arg *p = NULL;
	int ret;

	mutex_lock(&ar->conf_mutex);

	switch (ac) {
	case IEEE80211_AC_VO:
		p = &ar->wmm_params.ac_vo;
		break;
	case IEEE80211_AC_VI:
		p = &ar->wmm_params.ac_vi;
		break;
	case IEEE80211_AC_BE:
		p = &ar->wmm_params.ac_be;
		break;
	case IEEE80211_AC_BK:
		p = &ar->wmm_params.ac_bk;
		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;

	/* FIXME: FW accepts wmm params per hw, not per vif */
	ret = ath10k_wmi_pdev_set_wmm_params(ar, &ar->wmm_params);
	if (ret) {
3928
		ath10k_warn(ar, "failed to set wmm params: %d\n", ret);
3929 3930 3931 3932 3933
		goto exit;
	}

	ret = ath10k_conf_tx_uapsd(ar, vif, ac, params->uapsd);
	if (ret)
3934
		ath10k_warn(ar, "failed to set sta uapsd: %d\n", ret);
3935 3936 3937 3938 3939 3940 3941 3942 3943 3944 3945 3946 3947 3948 3949 3950 3951

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;
3952
	int ret = 0;
3953 3954 3955 3956

	mutex_lock(&ar->conf_mutex);

	spin_lock_bh(&ar->data_lock);
3957 3958 3959 3960 3961 3962 3963 3964 3965 3966 3967 3968 3969 3970
	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:
3971
		ret = -EBUSY;
3972
		break;
3973 3974 3975
	}
	spin_unlock_bh(&ar->data_lock);

3976 3977 3978
	if (ret)
		goto exit;

M
Michal Kazior 已提交
3979 3980
	duration = max(duration, WMI_SCAN_CHAN_MIN_TIME_MSEC);

3981 3982 3983 3984 3985 3986 3987 3988 3989 3990 3991 3992 3993 3994
	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) {
3995
		ath10k_warn(ar, "failed to start roc scan: %d\n", ret);
3996
		spin_lock_bh(&ar->data_lock);
3997
		ar->scan.state = ATH10K_SCAN_IDLE;
3998 3999 4000 4001 4002 4003
		spin_unlock_bh(&ar->data_lock);
		goto exit;
	}

	ret = wait_for_completion_timeout(&ar->scan.on_channel, 3*HZ);
	if (ret == 0) {
4004
		ath10k_warn(ar, "failed to switch to channel for roc scan\n");
4005 4006 4007

		ret = ath10k_scan_stop(ar);
		if (ret)
4008
			ath10k_warn(ar, "failed to stop scan: %d\n", ret);
4009

4010 4011 4012 4013 4014 4015 4016 4017 4018 4019 4020 4021 4022 4023 4024
		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);
4025
	ath10k_scan_abort(ar);
4026 4027
	mutex_unlock(&ar->conf_mutex);

4028 4029
	cancel_delayed_work_sync(&ar->scan.timeout);

4030 4031 4032 4033 4034 4035 4036 4037
	return 0;
}

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

4038 4039 4040 4041 4042
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
4043

4044
	mutex_lock(&ar->conf_mutex);
4045
	list_for_each_entry(arvif, &ar->arvifs, list) {
4046
		ath10k_dbg(ar, ATH10K_DBG_MAC, "mac vdev %d rts threshold %d\n",
4047 4048 4049 4050
			   arvif->vdev_id, value);

		ret = ath10k_mac_set_rts(arvif, value);
		if (ret) {
4051
			ath10k_warn(ar, "failed to set rts threshold for vdev %d: %d\n",
4052 4053 4054 4055
				    arvif->vdev_id, ret);
			break;
		}
	}
4056 4057
	mutex_unlock(&ar->conf_mutex);

4058
	return ret;
4059 4060
}

4061 4062
static void ath10k_flush(struct ieee80211_hw *hw, struct ieee80211_vif *vif,
			 u32 queues, bool drop)
4063 4064
{
	struct ath10k *ar = hw->priv;
4065
	bool skip;
4066 4067 4068 4069 4070 4071 4072
	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
4073 4074
	mutex_lock(&ar->conf_mutex);

4075 4076 4077
	if (ar->state == ATH10K_STATE_WEDGED)
		goto skip;

4078
	ret = wait_event_timeout(ar->htt.empty_tx_wq, ({
4079
			bool empty;
4080

4081
			spin_lock_bh(&ar->htt.tx_lock);
4082
			empty = (ar->htt.num_pending_tx == 0);
4083
			spin_unlock_bh(&ar->htt.tx_lock);
4084

M
Michal Kazior 已提交
4085 4086 4087
			skip = (ar->state == ATH10K_STATE_WEDGED) ||
			       test_bit(ATH10K_FLAG_CRASH_FLUSH,
					&ar->dev_flags);
4088 4089

			(empty || skip);
4090
		}), ATH10K_FLUSH_TIMEOUT_HZ);
4091 4092

	if (ret <= 0 || skip)
4093
		ath10k_warn(ar, "failed to flush transmit queue (skip %i ar-state %i): %i\n",
4094
			    skip, ar->state, ret);
M
Michal Kazior 已提交
4095

4096
skip:
M
Michal Kazior 已提交
4097
	mutex_unlock(&ar->conf_mutex);
4098 4099 4100 4101 4102 4103 4104 4105 4106 4107 4108
}

/* 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
4109 4110 4111 4112 4113 4114 4115
#ifdef CONFIG_PM
static int ath10k_suspend(struct ieee80211_hw *hw,
			  struct cfg80211_wowlan *wowlan)
{
	struct ath10k *ar = hw->priv;
	int ret;

4116 4117
	mutex_lock(&ar->conf_mutex);

4118
	ret = ath10k_wait_for_suspend(ar, WMI_PDEV_SUSPEND);
M
Michal Kazior 已提交
4119
	if (ret) {
4120 4121
		if (ret == -ETIMEDOUT)
			goto resume;
4122 4123
		ret = 1;
		goto exit;
M
Michal Kazior 已提交
4124 4125 4126 4127
	}

	ret = ath10k_hif_suspend(ar);
	if (ret) {
4128
		ath10k_warn(ar, "failed to suspend hif: %d\n", ret);
M
Michal Kazior 已提交
4129 4130 4131
		goto resume;
	}

4132 4133
	ret = 0;
	goto exit;
M
Michal Kazior 已提交
4134 4135 4136
resume:
	ret = ath10k_wmi_pdev_resume_target(ar);
	if (ret)
4137
		ath10k_warn(ar, "failed to resume target: %d\n", ret);
4138 4139 4140 4141 4142

	ret = 1;
exit:
	mutex_unlock(&ar->conf_mutex);
	return ret;
M
Michal Kazior 已提交
4143 4144 4145 4146 4147 4148 4149
}

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

4150 4151
	mutex_lock(&ar->conf_mutex);

M
Michal Kazior 已提交
4152 4153
	ret = ath10k_hif_resume(ar);
	if (ret) {
4154
		ath10k_warn(ar, "failed to resume hif: %d\n", ret);
4155 4156
		ret = 1;
		goto exit;
M
Michal Kazior 已提交
4157 4158 4159 4160
	}

	ret = ath10k_wmi_pdev_resume_target(ar);
	if (ret) {
4161
		ath10k_warn(ar, "failed to resume target: %d\n", ret);
4162 4163
		ret = 1;
		goto exit;
M
Michal Kazior 已提交
4164 4165
	}

4166 4167 4168 4169
	ret = 0;
exit:
	mutex_unlock(&ar->conf_mutex);
	return ret;
M
Michal Kazior 已提交
4170 4171 4172
}
#endif

4173 4174
static void ath10k_reconfig_complete(struct ieee80211_hw *hw,
				     enum ieee80211_reconfig_type reconfig_type)
4175 4176 4177
{
	struct ath10k *ar = hw->priv;

4178 4179 4180
	if (reconfig_type != IEEE80211_RECONFIG_TYPE_RESTART)
		return;

4181 4182 4183 4184 4185
	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) {
4186
		ath10k_info(ar, "device successfully recovered\n");
4187
		ar->state = ATH10K_STATE_ON;
M
Michal Kazior 已提交
4188
		ieee80211_wake_queues(ar->hw);
4189 4190 4191 4192 4193
	}

	mutex_unlock(&ar->conf_mutex);
}

M
Michal Kazior 已提交
4194 4195 4196 4197 4198 4199 4200 4201 4202 4203 4204 4205 4206 4207 4208 4209 4210 4211 4212 4213 4214 4215 4216 4217 4218 4219 4220 4221 4222 4223
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];

4224 4225 4226
	if (ar->rx_channel == survey->channel)
		survey->filled |= SURVEY_INFO_IN_USE;

M
Michal Kazior 已提交
4227 4228 4229 4230 4231
exit:
	mutex_unlock(&ar->conf_mutex);
	return ret;
}

4232 4233 4234 4235 4236 4237 4238 4239 4240 4241 4242 4243 4244 4245 4246 4247 4248 4249 4250 4251 4252 4253 4254 4255 4256 4257 4258 4259 4260 4261 4262 4263 4264 4265 4266 4267 4268 4269 4270 4271 4272 4273
/* 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;
4274 4275 4276 4277
	u16 nrf = ar->num_rf_chains;

	if (ar->cfg_tx_chainmask)
		nrf = get_nss_from_chainmask(ar->cfg_tx_chainmask);
4278 4279 4280 4281 4282 4283 4284 4285 4286 4287 4288 4289 4290 4291 4292

	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;

4293
	for (i = 0; i < nrf; i++)
4294 4295 4296
		if (mask->control[band].ht_mcs[i] != ht)
			return false;

4297
	for (i = 0; i < nrf; i++)
4298 4299 4300 4301 4302 4303 4304 4305 4306 4307 4308 4309 4310 4311 4312 4313 4314 4315 4316 4317 4318 4319 4320
		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;
4321 4322

		return false;
4323 4324 4325 4326 4327 4328 4329 4330 4331 4332
	}

	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;
4333 4334

		return false;
4335 4336 4337 4338 4339 4340 4341 4342 4343 4344 4345 4346 4347 4348 4349 4350 4351 4352 4353 4354 4355 4356 4357 4358 4359 4360 4361 4362 4363 4364 4365 4366 4367 4368 4369 4370 4371 4372 4373 4374 4375 4376 4377 4378 4379 4380 4381 4382 4383 4384 4385 4386 4387 4388 4389 4390
	}

	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
4391 4392
ath10k_bitrate_mask_rate(struct ath10k *ar,
			 const struct cfg80211_bitrate_mask *mask,
4393 4394 4395 4396 4397 4398 4399 4400 4401 4402 4403 4404 4405 4406 4407 4408 4409 4410 4411 4412 4413 4414 4415 4416 4417 4418 4419 4420 4421 4422 4423 4424 4425 4426 4427 4428 4429 4430 4431 4432 4433 4434 4435 4436 4437 4438 4439 4440 4441 4442 4443 4444 4445 4446 4447 4448 4449
			 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;

4450
	ath10k_dbg(ar, ATH10K_DBG_MAC, "mac fixed rate pream 0x%02x nss 0x%02x rate 0x%02x\n",
4451 4452 4453 4454 4455 4456 4457
		   pream, nss, rate);

	*fixed_rate = pream | nss | rate;

	return true;
}

4458 4459
static bool ath10k_get_fixed_rate_nss(struct ath10k *ar,
				      const struct cfg80211_bitrate_mask *mask,
4460 4461 4462 4463 4464 4465 4466 4467 4468
				      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 */
4469
	return ath10k_bitrate_mask_rate(ar, mask, band, fixed_rate, fixed_nss);
4470 4471 4472 4473
}

static int ath10k_set_fixed_rate_param(struct ath10k_vif *arvif,
				       u8 fixed_rate,
4474 4475
				       u8 fixed_nss,
				       u8 force_sgi)
4476 4477 4478 4479 4480 4481 4482 4483
{
	struct ath10k *ar = arvif->ar;
	u32 vdev_param;
	int ret = 0;

	mutex_lock(&ar->conf_mutex);

	if (arvif->fixed_rate == fixed_rate &&
4484 4485
	    arvif->fixed_nss == fixed_nss &&
	    arvif->force_sgi == force_sgi)
4486 4487 4488
		goto exit;

	if (fixed_rate == WMI_FIXED_RATE_NONE)
4489
		ath10k_dbg(ar, ATH10K_DBG_MAC, "mac disable fixed bitrate mask\n");
4490

4491
	if (force_sgi)
4492
		ath10k_dbg(ar, ATH10K_DBG_MAC, "mac force sgi\n");
4493

4494 4495 4496 4497
	vdev_param = ar->wmi.vdev_param->fixed_rate;
	ret = ath10k_wmi_vdev_set_param(ar, arvif->vdev_id,
					vdev_param, fixed_rate);
	if (ret) {
4498
		ath10k_warn(ar, "failed to set fixed rate param 0x%02x: %d\n",
4499 4500 4501 4502 4503 4504 4505 4506 4507 4508 4509 4510
			    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) {
4511
		ath10k_warn(ar, "failed to set fixed nss param %d: %d\n",
4512 4513 4514 4515 4516 4517 4518
			    fixed_nss, ret);
		ret = -EINVAL;
		goto exit;
	}

	arvif->fixed_nss = fixed_nss;

4519 4520 4521 4522 4523
	vdev_param = ar->wmi.vdev_param->sgi;
	ret = ath10k_wmi_vdev_set_param(ar, arvif->vdev_id, vdev_param,
					force_sgi);

	if (ret) {
4524
		ath10k_warn(ar, "failed to set sgi param %d: %d\n",
4525 4526 4527 4528 4529 4530 4531
			    force_sgi, ret);
		ret = -EINVAL;
		goto exit;
	}

	arvif->force_sgi = force_sgi;

4532 4533 4534 4535 4536 4537 4538 4539 4540 4541 4542 4543 4544 4545
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;
4546 4547
	u8 force_sgi;

4548 4549 4550
	if (ar->cfg_tx_chainmask)
		fixed_nss = get_nss_from_chainmask(ar->cfg_tx_chainmask);

4551 4552 4553
	force_sgi = mask->control[band].gi;
	if (force_sgi == NL80211_TXRATE_FORCE_LGI)
		return -EINVAL;
4554 4555

	if (!ath10k_default_bitrate_mask(ar, band, mask)) {
4556
		if (!ath10k_get_fixed_rate_nss(ar, mask, band,
4557 4558 4559 4560 4561
					       &fixed_rate,
					       &fixed_nss))
			return -EINVAL;
	}

4562
	if (fixed_rate == WMI_FIXED_RATE_NONE && force_sgi) {
4563
		ath10k_warn(ar, "failed to force SGI usage for default rate settings\n");
4564 4565 4566 4567 4568
		return -EINVAL;
	}

	return ath10k_set_fixed_rate_param(arvif, fixed_rate,
					   fixed_nss, force_sgi);
4569 4570
}

4571 4572 4573 4574 4575 4576 4577 4578 4579 4580 4581
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);

4582
	ath10k_dbg(ar, ATH10K_DBG_MAC,
4583 4584 4585 4586 4587 4588 4589 4590 4591 4592 4593 4594 4595 4596 4597 4598 4599 4600
		   "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:
4601
			ath10k_warn(ar, "Invalid bandwith %d in rc update for %pM\n",
4602
				    sta->bandwidth, sta->addr);
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
			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:
4628
			ath10k_warn(ar, "Invalid smps %d in sta rc update for %pM\n",
4629
				    sta->smps_mode, sta->addr);
4630 4631 4632 4633 4634 4635 4636 4637 4638 4639 4640 4641 4642 4643
			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);
}

4644 4645 4646 4647 4648 4649 4650 4651 4652 4653
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;
}

4654 4655 4656 4657 4658 4659
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)
{
4660
	struct ath10k *ar = hw->priv;
4661 4662
	struct ath10k_vif *arvif = ath10k_vif_to_arvif(vif);

4663
	ath10k_dbg(ar, ATH10K_DBG_MAC, "mac ampdu vdev_id %i sta %pM tid %hu action %d\n",
4664 4665 4666 4667 4668 4669 4670 4671 4672 4673 4674 4675 4676 4677 4678 4679 4680 4681 4682 4683 4684 4685 4686
		   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;
}

4687 4688 4689 4690 4691 4692 4693 4694 4695 4696 4697 4698 4699 4700 4701 4702 4703 4704 4705
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,
	.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,
4706 4707
	.set_antenna			= ath10k_set_antenna,
	.get_antenna			= ath10k_get_antenna,
4708
	.reconfig_complete		= ath10k_reconfig_complete,
M
Michal Kazior 已提交
4709
	.get_survey			= ath10k_get_survey,
4710
	.set_bitrate_mask		= ath10k_set_bitrate_mask,
4711
	.sta_rc_update			= ath10k_sta_rc_update,
4712
	.get_tsf			= ath10k_get_tsf,
4713
	.ampdu_action			= ath10k_ampdu_action,
B
Ben Greear 已提交
4714 4715 4716
	.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
4717 4718 4719

	CFG80211_TESTMODE_CMD(ath10k_tm_cmd)

M
Michal Kazior 已提交
4720 4721 4722 4723
#ifdef CONFIG_PM
	.suspend			= ath10k_suspend,
	.resume				= ath10k_resume,
#endif
4724 4725 4726 4727 4728 4729 4730 4731 4732 4733 4734 4735 4736 4737 4738 4739 4740 4741 4742 4743 4744 4745 4746 4747 4748 4749 4750 4751 4752 4753 4754 4755 4756 4757 4758 4759 4760 4761 4762 4763 4764 4765 4766 4767
};

#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[] = {
4768 4769 4770 4771 4772 4773 4774 4775 4776 4777 4778 4779 4780 4781 4782 4783 4784 4785 4786 4787 4788 4789 4790 4791
	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),
4792 4793
};

M
Michal Kazior 已提交
4794 4795 4796
/* Note: Be careful if you re-order these. There is code which depends on this
 * ordering.
 */
4797 4798 4799 4800 4801 4802 4803 4804 4805 4806 4807 4808 4809 4810 4811 4812 4813 4814 4815 4816 4817 4818
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
4819
struct ath10k *ath10k_mac_create(size_t priv_size)
4820 4821 4822 4823
{
	struct ieee80211_hw *hw;
	struct ath10k *ar;

M
Michal Kazior 已提交
4824
	hw = ieee80211_alloc_hw(sizeof(struct ath10k) + priv_size, &ath10k_ops);
4825 4826 4827 4828 4829 4830 4831 4832 4833 4834 4835 4836 4837 4838 4839 4840 4841 4842 4843
	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)
4844 4845 4846 4847 4848 4849 4850 4851 4852
	},
	{
	.max	= 3,
	.types	= BIT(NL80211_IFTYPE_P2P_GO)
	},
	{
	.max	= 7,
	.types	= BIT(NL80211_IFTYPE_AP)
	},
4853 4854
};

4855
static const struct ieee80211_iface_limit ath10k_10x_if_limits[] = {
4856 4857 4858 4859 4860 4861 4862 4863 4864 4865 4866 4867 4868 4869
	{
	.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,
	},
4870 4871 4872
};

static const struct ieee80211_iface_combination ath10k_10x_if_comb[] = {
4873
	{
4874 4875
		.limits = ath10k_10x_if_limits,
		.n_limits = ARRAY_SIZE(ath10k_10x_if_limits),
4876 4877 4878
		.max_interfaces = 8,
		.num_different_channels = 1,
		.beacon_int_infra_match = true,
4879
#ifdef CONFIG_ATH10K_DFS_CERTIFIED
4880 4881 4882 4883 4884
		.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
4885
	},
4886 4887 4888 4889 4890 4891
};

static struct ieee80211_sta_vht_cap ath10k_create_vht_cap(struct ath10k *ar)
{
	struct ieee80211_sta_vht_cap vht_cap = {0};
	u16 mcs_map;
4892
	int i;
4893 4894 4895 4896

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

4897 4898 4899 4900 4901 4902 4903
	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);
	}
4904 4905 4906 4907 4908 4909 4910 4911 4912 4913 4914 4915 4916 4917 4918 4919 4920 4921 4922 4923 4924 4925 4926 4927 4928 4929 4930 4931 4932 4933 4934 4935 4936 4937 4938 4939 4940 4941 4942 4943 4944 4945 4946 4947 4948 4949 4950 4951 4952 4953 4954 4955 4956 4957 4958 4959 4960 4961 4962 4963 4964 4965

	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;

4966
	for (i = 0; i < ar->num_rf_chains; i++)
4967 4968 4969 4970 4971 4972 4973 4974 4975 4976 4977 4978 4979 4980 4981 4982 4983 4984 4985 4986 4987 4988 4989 4990 4991 4992 4993 4994 4995 4996 4997
		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) {
4998
		ath10k_warn(ar, "No VIF found for vdev %d\n", vdev_id);
4999 5000 5001 5002 5003 5004 5005 5006 5007 5008 5009 5010 5011 5012 5013 5014 5015 5016 5017 5018 5019 5020 5021 5022 5023
		return NULL;
	}

	return arvif_iter.arvif;
}

int ath10k_mac_register(struct ath10k *ar)
{
	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);
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Michal Kazior 已提交
5024 5025 5026 5027
		if (!channels) {
			ret = -ENOMEM;
			goto err_free;
		}
5028 5029 5030 5031 5032 5033 5034 5035 5036 5037 5038 5039 5040 5041 5042 5043 5044 5045

		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;

		/* vht is not supported in 2.4 GHz */

		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
5046 5047
			ret = -ENOMEM;
			goto err_free;
5048 5049 5050 5051 5052 5053 5054 5055 5056 5057 5058 5059 5060 5061
		}

		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) |
5062 5063
		BIT(NL80211_IFTYPE_AP);

5064 5065 5066
	ar->hw->wiphy->available_antennas_rx = ar->supp_rx_chainmask;
	ar->hw->wiphy->available_antennas_tx = ar->supp_tx_chainmask;

5067 5068 5069 5070
	if (!test_bit(ATH10K_FW_FEATURE_NO_P2P, ar->fw_features))
		ar->hw->wiphy->interface_modes |=
			BIT(NL80211_IFTYPE_P2P_CLIENT) |
			BIT(NL80211_IFTYPE_P2P_GO);
5071 5072 5073 5074 5075 5076 5077 5078

	ar->hw->flags = IEEE80211_HW_SIGNAL_DBM |
			IEEE80211_HW_SUPPORTS_PS |
			IEEE80211_HW_SUPPORTS_DYNAMIC_PS |
			IEEE80211_HW_SUPPORTS_UAPSD |
			IEEE80211_HW_MFP_CAPABLE |
			IEEE80211_HW_REPORTS_TX_ACK_STATUS |
			IEEE80211_HW_HAS_RATE_CONTROL |
5079 5080
			IEEE80211_HW_AP_LINK_PS |
			IEEE80211_HW_SPECTRUM_MGMT;
5081

5082 5083
	ar->hw->wiphy->features |= NL80211_FEATURE_STATIC_SMPS;

5084
	if (ar->ht_cap_info & WMI_HT_CAP_DYNAMIC_SMPS)
5085
		ar->hw->wiphy->features |= NL80211_FEATURE_DYNAMIC_SMPS;
5086 5087 5088 5089 5090 5091 5092 5093 5094 5095

	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);
5096
	ar->hw->sta_data_size = sizeof(struct ath10k_sta);
5097 5098 5099 5100

	ar->hw->max_listen_interval = ATH10K_MAX_HW_LISTEN_INTERVAL;

	ar->hw->wiphy->flags |= WIPHY_FLAG_HAS_REMAIN_ON_CHANNEL;
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Michal Kazior 已提交
5101
	ar->hw->wiphy->flags |= WIPHY_FLAG_HAS_CHANNEL_SWITCH;
5102 5103 5104
	ar->hw->wiphy->max_remain_on_channel_duration = 5000;

	ar->hw->wiphy->flags |= WIPHY_FLAG_AP_UAPSD;
5105 5106
	ar->hw->wiphy->features |= NL80211_FEATURE_AP_MODE_CHAN_WIDTH_CHANGE;

5107 5108 5109 5110 5111 5112
	/*
	 * 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;

5113 5114 5115 5116 5117 5118 5119 5120
	if (test_bit(ATH10K_FW_FEATURE_WMI_10X, ar->fw_features)) {
		ar->hw->wiphy->iface_combinations = ath10k_10x_if_comb;
		ar->hw->wiphy->n_iface_combinations =
			ARRAY_SIZE(ath10k_10x_if_comb);
	} else {
		ar->hw->wiphy->iface_combinations = ath10k_if_comb;
		ar->hw->wiphy->n_iface_combinations =
			ARRAY_SIZE(ath10k_if_comb);
5121 5122

		ar->hw->wiphy->interface_modes |= BIT(NL80211_IFTYPE_ADHOC);
5123
	}
5124

5125 5126
	ar->hw->netdev_features = NETIF_F_HW_CSUM;

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Janusz Dziedzic 已提交
5127 5128 5129 5130 5131 5132 5133
	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)
5134
			ath10k_warn(ar, "failed to initialise DFS pattern detector\n");
J
Janusz Dziedzic 已提交
5135 5136
	}

5137 5138 5139
	ret = ath_regd_init(&ar->ath_common.regulatory, ar->hw->wiphy,
			    ath10k_reg_notifier);
	if (ret) {
5140
		ath10k_err(ar, "failed to initialise regulatory: %i\n", ret);
M
Michal Kazior 已提交
5141
		goto err_free;
5142 5143 5144 5145
	}

	ret = ieee80211_register_hw(ar->hw);
	if (ret) {
5146
		ath10k_err(ar, "failed to register ieee80211: %d\n", ret);
M
Michal Kazior 已提交
5147
		goto err_free;
5148 5149 5150 5151 5152 5153
	}

	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
5154
			goto err_unregister;
5155 5156 5157
	}

	return 0;
M
Michal Kazior 已提交
5158 5159

err_unregister:
5160
	ieee80211_unregister_hw(ar->hw);
M
Michal Kazior 已提交
5161 5162 5163 5164
err_free:
	kfree(ar->mac.sbands[IEEE80211_BAND_2GHZ].channels);
	kfree(ar->mac.sbands[IEEE80211_BAND_5GHZ].channels);

5165 5166 5167 5168 5169 5170 5171
	return ret;
}

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

J
Janusz Dziedzic 已提交
5172 5173 5174
	if (config_enabled(CONFIG_ATH10K_DFS_CERTIFIED) && ar->dfs_detector)
		ar->dfs_detector->exit(ar->dfs_detector);

5175 5176 5177 5178 5179
	kfree(ar->mac.sbands[IEEE80211_BAND_2GHZ].channels);
	kfree(ar->mac.sbands[IEEE80211_BAND_5GHZ].channels);

	SET_IEEE80211_DEV(ar->hw, NULL);
}