cfg.c 54.6 KB
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/*
 * mac80211 configuration hooks for cfg80211
 *
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 * Copyright 2006-2010	Johannes Berg <johannes@sipsolutions.net>
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 *
 * This file is GPLv2 as found in COPYING.
 */

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#include <linux/ieee80211.h>
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#include <linux/nl80211.h>
#include <linux/rtnetlink.h>
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#include <linux/slab.h>
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#include <net/net_namespace.h>
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#include <linux/rcupdate.h>
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#include <net/cfg80211.h>
#include "ieee80211_i.h"
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#include "driver-ops.h"
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#include "cfg.h"
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#include "rate.h"
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#include "mesh.h"

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static struct net_device *ieee80211_add_iface(struct wiphy *wiphy, char *name,
					      enum nl80211_iftype type,
					      u32 *flags,
					      struct vif_params *params)
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{
	struct ieee80211_local *local = wiphy_priv(wiphy);
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	struct net_device *dev;
	struct ieee80211_sub_if_data *sdata;
	int err;
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	err = ieee80211_if_add(local, name, &dev, type, params);
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	if (err)
		return ERR_PTR(err);
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	if (type == NL80211_IFTYPE_MONITOR && flags) {
		sdata = IEEE80211_DEV_TO_SUB_IF(dev);
		sdata->u.mntr_flags = *flags;
	}

	return dev;
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}

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static int ieee80211_del_iface(struct wiphy *wiphy, struct net_device *dev)
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{
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	ieee80211_if_remove(IEEE80211_DEV_TO_SUB_IF(dev));
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	return 0;
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}

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static int ieee80211_change_iface(struct wiphy *wiphy,
				  struct net_device *dev,
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				  enum nl80211_iftype type, u32 *flags,
				  struct vif_params *params)
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{
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	struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
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	int ret;
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	ret = ieee80211_if_change_type(sdata, type);
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	if (ret)
		return ret;
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	if (type == NL80211_IFTYPE_AP_VLAN &&
	    params && params->use_4addr == 0)
		rcu_assign_pointer(sdata->u.vlan.sta, NULL);
	else if (type == NL80211_IFTYPE_STATION &&
		 params && params->use_4addr >= 0)
		sdata->u.mgd.use_4addr = params->use_4addr;

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	if (sdata->vif.type == NL80211_IFTYPE_MONITOR && flags) {
		struct ieee80211_local *local = sdata->local;

		if (ieee80211_sdata_running(sdata)) {
			/*
			 * Prohibit MONITOR_FLAG_COOK_FRAMES to be
			 * changed while the interface is up.
			 * Else we would need to add a lot of cruft
			 * to update everything:
			 *	cooked_mntrs, monitor and all fif_* counters
			 *	reconfigure hardware
			 */
			if ((*flags & MONITOR_FLAG_COOK_FRAMES) !=
			    (sdata->u.mntr_flags & MONITOR_FLAG_COOK_FRAMES))
				return -EBUSY;

			ieee80211_adjust_monitor_flags(sdata, -1);
			sdata->u.mntr_flags = *flags;
			ieee80211_adjust_monitor_flags(sdata, 1);

			ieee80211_configure_filter(local);
		} else {
			/*
			 * Because the interface is down, ieee80211_do_stop
			 * and ieee80211_do_open take care of "everything"
			 * mentioned in the comment above.
			 */
			sdata->u.mntr_flags = *flags;
		}
	}
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	return 0;
}

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static int ieee80211_add_key(struct wiphy *wiphy, struct net_device *dev,
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			     u8 key_idx, bool pairwise, const u8 *mac_addr,
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			     struct key_params *params)
{
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	struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
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	struct sta_info *sta = NULL;
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	struct ieee80211_key *key;
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	int err;
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	if (!ieee80211_sdata_running(sdata))
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		return -ENETDOWN;

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	/* reject WEP and TKIP keys if WEP failed to initialize */
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	switch (params->cipher) {
	case WLAN_CIPHER_SUITE_WEP40:
	case WLAN_CIPHER_SUITE_TKIP:
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	case WLAN_CIPHER_SUITE_WEP104:
		if (IS_ERR(sdata->local->wep_tx_tfm))
			return -EINVAL;
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		break;
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	default:
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		break;
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	}

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	key = ieee80211_key_alloc(params->cipher, key_idx, params->key_len,
				  params->key, params->seq_len, params->seq);
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	if (IS_ERR(key))
		return PTR_ERR(key);
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	if (pairwise)
		key->conf.flags |= IEEE80211_KEY_FLAG_PAIRWISE;

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	mutex_lock(&sdata->local->sta_mtx);
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	if (mac_addr) {
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		if (ieee80211_vif_is_mesh(&sdata->vif))
			sta = sta_info_get(sdata, mac_addr);
		else
			sta = sta_info_get_bss(sdata, mac_addr);
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		if (!sta) {
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			ieee80211_key_free(sdata->local, key);
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			err = -ENOENT;
			goto out_unlock;
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		}
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	}

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	err = ieee80211_key_link(key, sdata, sta);
	if (err)
		ieee80211_key_free(sdata->local, key);
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 out_unlock:
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	mutex_unlock(&sdata->local->sta_mtx);
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	return err;
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}

static int ieee80211_del_key(struct wiphy *wiphy, struct net_device *dev,
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			     u8 key_idx, bool pairwise, const u8 *mac_addr)
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{
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	struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
	struct ieee80211_local *local = sdata->local;
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	struct sta_info *sta;
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	struct ieee80211_key *key = NULL;
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	int ret;

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	mutex_lock(&local->sta_mtx);
	mutex_lock(&local->key_mtx);
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	if (mac_addr) {
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		ret = -ENOENT;

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		sta = sta_info_get_bss(sdata, mac_addr);
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		if (!sta)
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			goto out_unlock;
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		if (pairwise)
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			key = key_mtx_dereference(local, sta->ptk);
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		else
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			key = key_mtx_dereference(local, sta->gtk[key_idx]);
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	} else
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		key = key_mtx_dereference(local, sdata->keys[key_idx]);
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	if (!key) {
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		ret = -ENOENT;
		goto out_unlock;
	}
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	__ieee80211_key_free(key);
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	ret = 0;
 out_unlock:
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	mutex_unlock(&local->key_mtx);
	mutex_unlock(&local->sta_mtx);
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	return ret;
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}

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static int ieee80211_get_key(struct wiphy *wiphy, struct net_device *dev,
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			     u8 key_idx, bool pairwise, const u8 *mac_addr,
			     void *cookie,
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			     void (*callback)(void *cookie,
					      struct key_params *params))
{
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	struct ieee80211_sub_if_data *sdata;
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	struct sta_info *sta = NULL;
	u8 seq[6] = {0};
	struct key_params params;
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	struct ieee80211_key *key = NULL;
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	u32 iv32;
	u16 iv16;
	int err = -ENOENT;

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	sdata = IEEE80211_DEV_TO_SUB_IF(dev);

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	rcu_read_lock();

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	if (mac_addr) {
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		sta = sta_info_get_bss(sdata, mac_addr);
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		if (!sta)
			goto out;

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		if (pairwise)
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			key = rcu_dereference(sta->ptk);
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		else if (key_idx < NUM_DEFAULT_KEYS)
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			key = rcu_dereference(sta->gtk[key_idx]);
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	} else
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		key = rcu_dereference(sdata->keys[key_idx]);
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	if (!key)
		goto out;

	memset(&params, 0, sizeof(params));

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	params.cipher = key->conf.cipher;
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	switch (key->conf.cipher) {
	case WLAN_CIPHER_SUITE_TKIP:
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		iv32 = key->u.tkip.tx.iv32;
		iv16 = key->u.tkip.tx.iv16;
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		if (key->flags & KEY_FLAG_UPLOADED_TO_HARDWARE)
			drv_get_tkip_seq(sdata->local,
					 key->conf.hw_key_idx,
					 &iv32, &iv16);
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		seq[0] = iv16 & 0xff;
		seq[1] = (iv16 >> 8) & 0xff;
		seq[2] = iv32 & 0xff;
		seq[3] = (iv32 >> 8) & 0xff;
		seq[4] = (iv32 >> 16) & 0xff;
		seq[5] = (iv32 >> 24) & 0xff;
		params.seq = seq;
		params.seq_len = 6;
		break;
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	case WLAN_CIPHER_SUITE_CCMP:
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		seq[0] = key->u.ccmp.tx_pn[5];
		seq[1] = key->u.ccmp.tx_pn[4];
		seq[2] = key->u.ccmp.tx_pn[3];
		seq[3] = key->u.ccmp.tx_pn[2];
		seq[4] = key->u.ccmp.tx_pn[1];
		seq[5] = key->u.ccmp.tx_pn[0];
		params.seq = seq;
		params.seq_len = 6;
		break;
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	case WLAN_CIPHER_SUITE_AES_CMAC:
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		seq[0] = key->u.aes_cmac.tx_pn[5];
		seq[1] = key->u.aes_cmac.tx_pn[4];
		seq[2] = key->u.aes_cmac.tx_pn[3];
		seq[3] = key->u.aes_cmac.tx_pn[2];
		seq[4] = key->u.aes_cmac.tx_pn[1];
		seq[5] = key->u.aes_cmac.tx_pn[0];
		params.seq = seq;
		params.seq_len = 6;
		break;
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	}

	params.key = key->conf.key;
	params.key_len = key->conf.keylen;

	callback(cookie, &params);
	err = 0;

 out:
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	rcu_read_unlock();
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	return err;
}

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static int ieee80211_config_default_key(struct wiphy *wiphy,
					struct net_device *dev,
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					u8 key_idx, bool uni,
					bool multi)
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{
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	struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
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	ieee80211_set_default_key(sdata, key_idx, uni, multi);
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	return 0;
}

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static int ieee80211_config_default_mgmt_key(struct wiphy *wiphy,
					     struct net_device *dev,
					     u8 key_idx)
{
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	struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
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	ieee80211_set_default_mgmt_key(sdata, key_idx);

	return 0;
}

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static void rate_idx_to_bitrate(struct rate_info *rate, struct sta_info *sta, int idx)
{
	if (!(rate->flags & RATE_INFO_FLAGS_MCS)) {
		struct ieee80211_supported_band *sband;
		sband = sta->local->hw.wiphy->bands[
				sta->local->hw.conf.channel->band];
		rate->legacy = sband->bitrates[idx].bitrate;
	} else
		rate->mcs = idx;
}

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static void sta_set_sinfo(struct sta_info *sta, struct station_info *sinfo)
{
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	struct ieee80211_sub_if_data *sdata = sta->sdata;
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	struct timespec uptime;
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	sinfo->generation = sdata->local->sta_generation;

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	sinfo->filled = STATION_INFO_INACTIVE_TIME |
			STATION_INFO_RX_BYTES |
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			STATION_INFO_TX_BYTES |
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			STATION_INFO_RX_PACKETS |
			STATION_INFO_TX_PACKETS |
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			STATION_INFO_TX_RETRIES |
			STATION_INFO_TX_FAILED |
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			STATION_INFO_TX_BITRATE |
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			STATION_INFO_RX_BITRATE |
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			STATION_INFO_RX_DROP_MISC |
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			STATION_INFO_BSS_PARAM |
			STATION_INFO_CONNECTED_TIME;

	do_posix_clock_monotonic_gettime(&uptime);
	sinfo->connected_time = uptime.tv_sec - sta->last_connected;
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	sinfo->inactive_time = jiffies_to_msecs(jiffies - sta->last_rx);
	sinfo->rx_bytes = sta->rx_bytes;
	sinfo->tx_bytes = sta->tx_bytes;
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	sinfo->rx_packets = sta->rx_packets;
	sinfo->tx_packets = sta->tx_packets;
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	sinfo->tx_retries = sta->tx_retry_count;
	sinfo->tx_failed = sta->tx_retry_failed;
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	sinfo->rx_dropped_misc = sta->rx_dropped;
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	if ((sta->local->hw.flags & IEEE80211_HW_SIGNAL_DBM) ||
	    (sta->local->hw.flags & IEEE80211_HW_SIGNAL_UNSPEC)) {
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		sinfo->filled |= STATION_INFO_SIGNAL | STATION_INFO_SIGNAL_AVG;
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		sinfo->signal = (s8)sta->last_signal;
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		sinfo->signal_avg = (s8) -ewma_read(&sta->avg_signal);
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	}

	sinfo->txrate.flags = 0;
	if (sta->last_tx_rate.flags & IEEE80211_TX_RC_MCS)
		sinfo->txrate.flags |= RATE_INFO_FLAGS_MCS;
	if (sta->last_tx_rate.flags & IEEE80211_TX_RC_40_MHZ_WIDTH)
		sinfo->txrate.flags |= RATE_INFO_FLAGS_40_MHZ_WIDTH;
	if (sta->last_tx_rate.flags & IEEE80211_TX_RC_SHORT_GI)
		sinfo->txrate.flags |= RATE_INFO_FLAGS_SHORT_GI;
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	rate_idx_to_bitrate(&sinfo->txrate, sta, sta->last_tx_rate.idx);

	sinfo->rxrate.flags = 0;
	if (sta->last_rx_rate_flag & RX_FLAG_HT)
		sinfo->rxrate.flags |= RATE_INFO_FLAGS_MCS;
	if (sta->last_rx_rate_flag & RX_FLAG_40MHZ)
		sinfo->rxrate.flags |= RATE_INFO_FLAGS_40_MHZ_WIDTH;
	if (sta->last_rx_rate_flag & RX_FLAG_SHORT_GI)
		sinfo->rxrate.flags |= RATE_INFO_FLAGS_SHORT_GI;
	rate_idx_to_bitrate(&sinfo->rxrate, sta, sta->last_rx_rate_idx);
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	if (ieee80211_vif_is_mesh(&sdata->vif)) {
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#ifdef CONFIG_MAC80211_MESH
		sinfo->filled |= STATION_INFO_LLID |
				 STATION_INFO_PLID |
				 STATION_INFO_PLINK_STATE;

		sinfo->llid = le16_to_cpu(sta->llid);
		sinfo->plid = le16_to_cpu(sta->plid);
		sinfo->plink_state = sta->plink_state;
#endif
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	}
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	sinfo->bss_param.flags = 0;
	if (sdata->vif.bss_conf.use_cts_prot)
		sinfo->bss_param.flags |= BSS_PARAM_FLAGS_CTS_PROT;
	if (sdata->vif.bss_conf.use_short_preamble)
		sinfo->bss_param.flags |= BSS_PARAM_FLAGS_SHORT_PREAMBLE;
	if (sdata->vif.bss_conf.use_short_slot)
		sinfo->bss_param.flags |= BSS_PARAM_FLAGS_SHORT_SLOT_TIME;
	sinfo->bss_param.dtim_period = sdata->local->hw.conf.ps_dtim_period;
	sinfo->bss_param.beacon_interval = sdata->vif.bss_conf.beacon_int;
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}


static int ieee80211_dump_station(struct wiphy *wiphy, struct net_device *dev,
				 int idx, u8 *mac, struct station_info *sinfo)
{
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	struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
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	struct sta_info *sta;
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	int ret = -ENOENT;

	rcu_read_lock();
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	sta = sta_info_get_by_idx(sdata, idx);
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	if (sta) {
		ret = 0;
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		memcpy(mac, sta->sta.addr, ETH_ALEN);
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		sta_set_sinfo(sta, sinfo);
	}
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	rcu_read_unlock();
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	return ret;
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}

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static int ieee80211_dump_survey(struct wiphy *wiphy, struct net_device *dev,
				 int idx, struct survey_info *survey)
{
	struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);

	return drv_get_survey(local, idx, survey);
}

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static int ieee80211_get_station(struct wiphy *wiphy, struct net_device *dev,
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				 u8 *mac, struct station_info *sinfo)
437
{
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	struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
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	struct sta_info *sta;
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	int ret = -ENOENT;
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	rcu_read_lock();
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	sta = sta_info_get_bss(sdata, mac);
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	if (sta) {
		ret = 0;
		sta_set_sinfo(sta, sinfo);
	}

	rcu_read_unlock();

	return ret;
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}

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/*
 * This handles both adding a beacon and setting new beacon info
 */
static int ieee80211_config_beacon(struct ieee80211_sub_if_data *sdata,
				   struct beacon_parameters *params)
{
	struct beacon_data *new, *old;
	int new_head_len, new_tail_len;
	int size;
	int err = -EINVAL;

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	old = rtnl_dereference(sdata->u.ap.beacon);
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	/* head must not be zero-length */
	if (params->head && !params->head_len)
		return -EINVAL;

	/*
	 * This is a kludge. beacon interval should really be part
	 * of the beacon information.
	 */
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	if (params->interval &&
	    (sdata->vif.bss_conf.beacon_int != params->interval)) {
		sdata->vif.bss_conf.beacon_int = params->interval;
		ieee80211_bss_info_change_notify(sdata,
						 BSS_CHANGED_BEACON_INT);
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	}

	/* Need to have a beacon head if we don't have one yet */
	if (!params->head && !old)
		return err;

	/* sorry, no way to start beaconing without dtim period */
	if (!params->dtim_period && !old)
		return err;

	/* new or old head? */
	if (params->head)
		new_head_len = params->head_len;
	else
		new_head_len = old->head_len;

	/* new or old tail? */
	if (params->tail || !old)
		/* params->tail_len will be zero for !params->tail */
		new_tail_len = params->tail_len;
	else
		new_tail_len = old->tail_len;

	size = sizeof(*new) + new_head_len + new_tail_len;

	new = kzalloc(size, GFP_KERNEL);
	if (!new)
		return -ENOMEM;

	/* start filling the new info now */

	/* new or old dtim period? */
	if (params->dtim_period)
		new->dtim_period = params->dtim_period;
	else
		new->dtim_period = old->dtim_period;

	/*
	 * pointers go into the block we allocated,
	 * memory is | beacon_data | head | tail |
	 */
	new->head = ((u8 *) new) + sizeof(*new);
	new->tail = new->head + new_head_len;
	new->head_len = new_head_len;
	new->tail_len = new_tail_len;

	/* copy in head */
	if (params->head)
		memcpy(new->head, params->head, new_head_len);
	else
		memcpy(new->head, old->head, new_head_len);

	/* copy in optional tail */
	if (params->tail)
		memcpy(new->tail, params->tail, new_tail_len);
	else
		if (old)
			memcpy(new->tail, old->tail, new_tail_len);

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	sdata->vif.bss_conf.dtim_period = new->dtim_period;

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	rcu_assign_pointer(sdata->u.ap.beacon, new);

	synchronize_rcu();

	kfree(old);

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	ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_BEACON_ENABLED |
						BSS_CHANGED_BEACON);
	return 0;
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}

static int ieee80211_add_beacon(struct wiphy *wiphy, struct net_device *dev,
				struct beacon_parameters *params)
{
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	struct ieee80211_sub_if_data *sdata;
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	struct beacon_data *old;

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	sdata = IEEE80211_DEV_TO_SUB_IF(dev);

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	old = rtnl_dereference(sdata->u.ap.beacon);
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	if (old)
		return -EALREADY;

	return ieee80211_config_beacon(sdata, params);
}

static int ieee80211_set_beacon(struct wiphy *wiphy, struct net_device *dev,
				struct beacon_parameters *params)
{
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	struct ieee80211_sub_if_data *sdata;
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	struct beacon_data *old;

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	sdata = IEEE80211_DEV_TO_SUB_IF(dev);

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	old = rtnl_dereference(sdata->u.ap.beacon);
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	if (!old)
		return -ENOENT;

	return ieee80211_config_beacon(sdata, params);
}

static int ieee80211_del_beacon(struct wiphy *wiphy, struct net_device *dev)
{
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	struct ieee80211_sub_if_data *sdata;
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	struct beacon_data *old;

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	sdata = IEEE80211_DEV_TO_SUB_IF(dev);

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	old = rtnl_dereference(sdata->u.ap.beacon);
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	if (!old)
		return -ENOENT;

	rcu_assign_pointer(sdata->u.ap.beacon, NULL);
	synchronize_rcu();
	kfree(old);

598 599
	ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_BEACON_ENABLED);
	return 0;
600 601
}

602 603 604 605 606 607 608 609 610
/* Layer 2 Update frame (802.2 Type 1 LLC XID Update response) */
struct iapp_layer2_update {
	u8 da[ETH_ALEN];	/* broadcast */
	u8 sa[ETH_ALEN];	/* STA addr */
	__be16 len;		/* 6 */
	u8 dsap;		/* 0 */
	u8 ssap;		/* 0 */
	u8 control;
	u8 xid_info[3];
E
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} __packed;
612 613 614 615 616 617 618 619 620 621 622 623 624 625 626 627 628 629

static void ieee80211_send_layer2_update(struct sta_info *sta)
{
	struct iapp_layer2_update *msg;
	struct sk_buff *skb;

	/* Send Level 2 Update Frame to update forwarding tables in layer 2
	 * bridge devices */

	skb = dev_alloc_skb(sizeof(*msg));
	if (!skb)
		return;
	msg = (struct iapp_layer2_update *)skb_put(skb, sizeof(*msg));

	/* 802.2 Type 1 Logical Link Control (LLC) Exchange Identifier (XID)
	 * Update response frame; IEEE Std 802.2-1998, 5.4.1.2.1 */

	memset(msg->da, 0xff, ETH_ALEN);
630
	memcpy(msg->sa, sta->sta.addr, ETH_ALEN);
631 632 633 634 635 636 637 638 639
	msg->len = htons(6);
	msg->dsap = 0;
	msg->ssap = 0x01;	/* NULL LSAP, CR Bit: Response */
	msg->control = 0xaf;	/* XID response lsb.1111F101.
				 * F=0 (no poll command; unsolicited frame) */
	msg->xid_info[0] = 0x81;	/* XID format identifier */
	msg->xid_info[1] = 1;	/* LLC types/classes: Type 1 LLC */
	msg->xid_info[2] = 0;	/* XID sender's receive window size (RW) */

640 641
	skb->dev = sta->sdata->dev;
	skb->protocol = eth_type_trans(skb, sta->sdata->dev);
642
	memset(skb->cb, 0, sizeof(skb->cb));
643
	netif_rx_ni(skb);
644 645 646 647 648 649
}

static void sta_apply_parameters(struct ieee80211_local *local,
				 struct sta_info *sta,
				 struct station_parameters *params)
{
650
	unsigned long flags;
651 652
	u32 rates;
	int i, j;
653
	struct ieee80211_supported_band *sband;
654
	struct ieee80211_sub_if_data *sdata = sta->sdata;
655
	u32 mask, set;
656

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	sband = local->hw.wiphy->bands[local->oper_channel->band];

659
	spin_lock_irqsave(&sta->flaglock, flags);
660 661
	mask = params->sta_flags_mask;
	set = params->sta_flags_set;
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662

663
	if (mask & BIT(NL80211_STA_FLAG_AUTHORIZED)) {
664
		sta->flags &= ~WLAN_STA_AUTHORIZED;
665
		if (set & BIT(NL80211_STA_FLAG_AUTHORIZED))
666
			sta->flags |= WLAN_STA_AUTHORIZED;
667
	}
668

669
	if (mask & BIT(NL80211_STA_FLAG_SHORT_PREAMBLE)) {
670
		sta->flags &= ~WLAN_STA_SHORT_PREAMBLE;
671
		if (set & BIT(NL80211_STA_FLAG_SHORT_PREAMBLE))
672
			sta->flags |= WLAN_STA_SHORT_PREAMBLE;
673
	}
674

675
	if (mask & BIT(NL80211_STA_FLAG_WME)) {
676
		sta->flags &= ~WLAN_STA_WME;
677
		if (set & BIT(NL80211_STA_FLAG_WME))
678
			sta->flags |= WLAN_STA_WME;
679
	}
680

681
	if (mask & BIT(NL80211_STA_FLAG_MFP)) {
682
		sta->flags &= ~WLAN_STA_MFP;
683
		if (set & BIT(NL80211_STA_FLAG_MFP))
684
			sta->flags |= WLAN_STA_MFP;
685
	}
686 687 688 689 690 691

	if (mask & BIT(NL80211_STA_FLAG_AUTHENTICATED)) {
		sta->flags &= ~WLAN_STA_AUTH;
		if (set & BIT(NL80211_STA_FLAG_AUTHENTICATED))
			sta->flags |= WLAN_STA_AUTH;
	}
692
	spin_unlock_irqrestore(&sta->flaglock, flags);
693

694 695 696 697 698 699 700
	/*
	 * cfg80211 validates this (1-2007) and allows setting the AID
	 * only when creating a new station entry
	 */
	if (params->aid)
		sta->sta.aid = params->aid;

J
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	/*
	 * FIXME: updating the following information is racy when this
	 *	  function is called from ieee80211_change_station().
	 *	  However, all this information should be static so
	 *	  maybe we should just reject attemps to change it.
	 */

708 709 710 711 712
	if (params->listen_interval >= 0)
		sta->listen_interval = params->listen_interval;

	if (params->supported_rates) {
		rates = 0;
713

714 715
		for (i = 0; i < params->supported_rates_len; i++) {
			int rate = (params->supported_rates[i] & 0x7f) * 5;
716 717
			for (j = 0; j < sband->n_bitrates; j++) {
				if (sband->bitrates[j].bitrate == rate)
718 719 720
					rates |= BIT(j);
			}
		}
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		sta->sta.supp_rates[local->oper_channel->band] = rates;
722
	}
723

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724
	if (params->ht_capa)
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725 726
		ieee80211_ht_cap_ie_to_sta_ht_cap(sband,
						  params->ht_capa,
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727
						  &sta->sta.ht_cap);
728

729
	if (ieee80211_vif_is_mesh(&sdata->vif)) {
730
#ifdef CONFIG_MAC80211_MESH
731 732
		if (sdata->u.mesh.security & IEEE80211_MESH_SEC_SECURED)
			switch (params->plink_state) {
733 734 735
			case NL80211_PLINK_LISTEN:
			case NL80211_PLINK_ESTAB:
			case NL80211_PLINK_BLOCKED:
736 737 738 739 740 741 742 743 744 745 746 747 748 749 750
				sta->plink_state = params->plink_state;
				break;
			default:
				/*  nothing  */
				break;
			}
		else
			switch (params->plink_action) {
			case PLINK_ACTION_OPEN:
				mesh_plink_open(sta);
				break;
			case PLINK_ACTION_BLOCK:
				mesh_plink_block(sta);
				break;
			}
751
#endif
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	}
753 754 755 756 757
}

static int ieee80211_add_station(struct wiphy *wiphy, struct net_device *dev,
				 u8 *mac, struct station_parameters *params)
{
758
	struct ieee80211_local *local = wiphy_priv(wiphy);
759 760
	struct sta_info *sta;
	struct ieee80211_sub_if_data *sdata;
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761
	int err;
762
	int layer2_update;
763 764 765 766

	if (params->vlan) {
		sdata = IEEE80211_DEV_TO_SUB_IF(params->vlan);

767 768
		if (sdata->vif.type != NL80211_IFTYPE_AP_VLAN &&
		    sdata->vif.type != NL80211_IFTYPE_AP)
769 770 771 772
			return -EINVAL;
	} else
		sdata = IEEE80211_DEV_TO_SUB_IF(dev);

773
	if (compare_ether_addr(mac, sdata->vif.addr) == 0)
774 775 776 777 778 779
		return -EINVAL;

	if (is_multicast_ether_addr(mac))
		return -EINVAL;

	sta = sta_info_alloc(sdata, mac, GFP_KERNEL);
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780 781
	if (!sta)
		return -ENOMEM;
782 783 784 785 786

	sta->flags = WLAN_STA_AUTH | WLAN_STA_ASSOC;

	sta_apply_parameters(local, sta, params);

787
	rate_control_rate_init(sta);
788

789 790 791
	layer2_update = sdata->vif.type == NL80211_IFTYPE_AP_VLAN ||
		sdata->vif.type == NL80211_IFTYPE_AP;

792
	err = sta_info_insert_rcu(sta);
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793 794 795 796 797
	if (err) {
		rcu_read_unlock();
		return err;
	}

798
	if (layer2_update)
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		ieee80211_send_layer2_update(sta);

	rcu_read_unlock();

803 804 805 806 807 808
	return 0;
}

static int ieee80211_del_station(struct wiphy *wiphy, struct net_device *dev,
				 u8 *mac)
{
809 810
	struct ieee80211_local *local = wiphy_priv(wiphy);
	struct ieee80211_sub_if_data *sdata;
811

812 813
	sdata = IEEE80211_DEV_TO_SUB_IF(dev);

814 815
	if (mac)
		return sta_info_destroy_addr_bss(sdata, mac);
816

817
	sta_info_flush(local, sdata);
818 819 820 821 822 823 824 825
	return 0;
}

static int ieee80211_change_station(struct wiphy *wiphy,
				    struct net_device *dev,
				    u8 *mac,
				    struct station_parameters *params)
{
826
	struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
827
	struct ieee80211_local *local = wiphy_priv(wiphy);
828 829 830
	struct sta_info *sta;
	struct ieee80211_sub_if_data *vlansdata;

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831 832
	rcu_read_lock();

833
	sta = sta_info_get_bss(sdata, mac);
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834 835
	if (!sta) {
		rcu_read_unlock();
836
		return -ENOENT;
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837
	}
838

839
	if (params->vlan && params->vlan != sta->sdata->dev) {
840 841
		vlansdata = IEEE80211_DEV_TO_SUB_IF(params->vlan);

842 843
		if (vlansdata->vif.type != NL80211_IFTYPE_AP_VLAN &&
		    vlansdata->vif.type != NL80211_IFTYPE_AP) {
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844
			rcu_read_unlock();
845
			return -EINVAL;
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846
		}
847

848
		if (params->vlan->ieee80211_ptr->use_4addr) {
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849 850
			if (vlansdata->u.vlan.sta) {
				rcu_read_unlock();
851
				return -EBUSY;
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852
			}
853 854 855 856

			rcu_assign_pointer(vlansdata->u.vlan.sta, sta);
		}

857
		sta->sdata = vlansdata;
858 859 860 861 862
		ieee80211_send_layer2_update(sta);
	}

	sta_apply_parameters(local, sta, params);

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863 864
	rcu_read_unlock();

865 866 867 868
	if (sdata->vif.type == NL80211_IFTYPE_STATION &&
	    params->sta_flags_mask & BIT(NL80211_STA_FLAG_AUTHORIZED))
		ieee80211_recalc_ps(local, -1);

869 870 871
	return 0;
}

872 873 874 875
#ifdef CONFIG_MAC80211_MESH
static int ieee80211_add_mpath(struct wiphy *wiphy, struct net_device *dev,
				 u8 *dst, u8 *next_hop)
{
876
	struct ieee80211_sub_if_data *sdata;
877 878 879 880
	struct mesh_path *mpath;
	struct sta_info *sta;
	int err;

881 882
	sdata = IEEE80211_DEV_TO_SUB_IF(dev);

883
	rcu_read_lock();
884
	sta = sta_info_get(sdata, next_hop);
885 886
	if (!sta) {
		rcu_read_unlock();
887
		return -ENOENT;
888
	}
889

890
	err = mesh_path_add(dst, sdata);
891 892
	if (err) {
		rcu_read_unlock();
893
		return err;
894
	}
895

896
	mpath = mesh_path_lookup(dst, sdata);
897 898 899 900 901
	if (!mpath) {
		rcu_read_unlock();
		return -ENXIO;
	}
	mesh_path_fix_nexthop(mpath, sta);
902

903 904 905 906 907 908 909
	rcu_read_unlock();
	return 0;
}

static int ieee80211_del_mpath(struct wiphy *wiphy, struct net_device *dev,
				 u8 *dst)
{
910 911
	struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);

912
	if (dst)
913
		return mesh_path_del(dst, sdata);
914

915
	mesh_path_flush(sdata);
916 917 918 919 920 921 922
	return 0;
}

static int ieee80211_change_mpath(struct wiphy *wiphy,
				    struct net_device *dev,
				    u8 *dst, u8 *next_hop)
{
923
	struct ieee80211_sub_if_data *sdata;
924 925 926
	struct mesh_path *mpath;
	struct sta_info *sta;

927 928
	sdata = IEEE80211_DEV_TO_SUB_IF(dev);

929 930
	rcu_read_lock();

931
	sta = sta_info_get(sdata, next_hop);
932 933
	if (!sta) {
		rcu_read_unlock();
934
		return -ENOENT;
935
	}
936

937
	mpath = mesh_path_lookup(dst, sdata);
938 939 940 941 942 943
	if (!mpath) {
		rcu_read_unlock();
		return -ENOENT;
	}

	mesh_path_fix_nexthop(mpath, sta);
944

945 946 947 948 949 950 951
	rcu_read_unlock();
	return 0;
}

static void mpath_set_pinfo(struct mesh_path *mpath, u8 *next_hop,
			    struct mpath_info *pinfo)
{
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952 953 954 955
	struct sta_info *next_hop_sta = rcu_dereference(mpath->next_hop);

	if (next_hop_sta)
		memcpy(next_hop, next_hop_sta->sta.addr, ETH_ALEN);
956 957 958
	else
		memset(next_hop, 0, ETH_ALEN);

959 960
	pinfo->generation = mesh_paths_generation;

961
	pinfo->filled = MPATH_INFO_FRAME_QLEN |
962
			MPATH_INFO_SN |
963 964 965 966 967 968 969
			MPATH_INFO_METRIC |
			MPATH_INFO_EXPTIME |
			MPATH_INFO_DISCOVERY_TIMEOUT |
			MPATH_INFO_DISCOVERY_RETRIES |
			MPATH_INFO_FLAGS;

	pinfo->frame_qlen = mpath->frame_queue.qlen;
970
	pinfo->sn = mpath->sn;
971 972 973 974 975 976 977 978 979 980 981
	pinfo->metric = mpath->metric;
	if (time_before(jiffies, mpath->exp_time))
		pinfo->exptime = jiffies_to_msecs(mpath->exp_time - jiffies);
	pinfo->discovery_timeout =
			jiffies_to_msecs(mpath->discovery_timeout);
	pinfo->discovery_retries = mpath->discovery_retries;
	pinfo->flags = 0;
	if (mpath->flags & MESH_PATH_ACTIVE)
		pinfo->flags |= NL80211_MPATH_FLAG_ACTIVE;
	if (mpath->flags & MESH_PATH_RESOLVING)
		pinfo->flags |= NL80211_MPATH_FLAG_RESOLVING;
982 983
	if (mpath->flags & MESH_PATH_SN_VALID)
		pinfo->flags |= NL80211_MPATH_FLAG_SN_VALID;
984 985 986 987 988 989 990 991 992 993 994 995
	if (mpath->flags & MESH_PATH_FIXED)
		pinfo->flags |= NL80211_MPATH_FLAG_FIXED;
	if (mpath->flags & MESH_PATH_RESOLVING)
		pinfo->flags |= NL80211_MPATH_FLAG_RESOLVING;

	pinfo->flags = mpath->flags;
}

static int ieee80211_get_mpath(struct wiphy *wiphy, struct net_device *dev,
			       u8 *dst, u8 *next_hop, struct mpath_info *pinfo)

{
996
	struct ieee80211_sub_if_data *sdata;
997 998
	struct mesh_path *mpath;

999 1000
	sdata = IEEE80211_DEV_TO_SUB_IF(dev);

1001
	rcu_read_lock();
1002
	mpath = mesh_path_lookup(dst, sdata);
1003 1004 1005 1006 1007 1008 1009 1010 1011 1012 1013 1014 1015 1016
	if (!mpath) {
		rcu_read_unlock();
		return -ENOENT;
	}
	memcpy(dst, mpath->dst, ETH_ALEN);
	mpath_set_pinfo(mpath, next_hop, pinfo);
	rcu_read_unlock();
	return 0;
}

static int ieee80211_dump_mpath(struct wiphy *wiphy, struct net_device *dev,
				 int idx, u8 *dst, u8 *next_hop,
				 struct mpath_info *pinfo)
{
1017
	struct ieee80211_sub_if_data *sdata;
1018 1019
	struct mesh_path *mpath;

1020 1021
	sdata = IEEE80211_DEV_TO_SUB_IF(dev);

1022
	rcu_read_lock();
1023
	mpath = mesh_path_lookup_by_idx(idx, sdata);
1024 1025 1026 1027 1028 1029 1030 1031 1032
	if (!mpath) {
		rcu_read_unlock();
		return -ENOENT;
	}
	memcpy(dst, mpath->dst, ETH_ALEN);
	mpath_set_pinfo(mpath, next_hop, pinfo);
	rcu_read_unlock();
	return 0;
}
1033

1034
static int ieee80211_get_mesh_config(struct wiphy *wiphy,
1035 1036 1037 1038 1039 1040 1041 1042 1043 1044 1045 1046 1047 1048 1049
				struct net_device *dev,
				struct mesh_config *conf)
{
	struct ieee80211_sub_if_data *sdata;
	sdata = IEEE80211_DEV_TO_SUB_IF(dev);

	memcpy(conf, &(sdata->u.mesh.mshcfg), sizeof(struct mesh_config));
	return 0;
}

static inline bool _chg_mesh_attr(enum nl80211_meshconf_params parm, u32 mask)
{
	return (mask >> (parm-1)) & 0x1;
}

1050 1051 1052 1053 1054 1055
static int copy_mesh_setup(struct ieee80211_if_mesh *ifmsh,
		const struct mesh_setup *setup)
{
	u8 *new_ie;
	const u8 *old_ie;

1056
	/* allocate information elements */
1057
	new_ie = NULL;
1058
	old_ie = ifmsh->ie;
1059

1060 1061
	if (setup->ie_len) {
		new_ie = kmemdup(setup->ie, setup->ie_len,
1062 1063 1064 1065
				GFP_KERNEL);
		if (!new_ie)
			return -ENOMEM;
	}
1066 1067 1068
	ifmsh->ie_len = setup->ie_len;
	ifmsh->ie = new_ie;
	kfree(old_ie);
1069 1070 1071 1072 1073 1074

	/* now copy the rest of the setup parameters */
	ifmsh->mesh_id_len = setup->mesh_id_len;
	memcpy(ifmsh->mesh_id, setup->mesh_id, ifmsh->mesh_id_len);
	ifmsh->mesh_pp_id = setup->path_sel_proto;
	ifmsh->mesh_pm_id = setup->path_metric;
1075 1076 1077 1078 1079
	ifmsh->security = IEEE80211_MESH_SEC_NONE;
	if (setup->is_authenticated)
		ifmsh->security |= IEEE80211_MESH_SEC_AUTHED;
	if (setup->is_secure)
		ifmsh->security |= IEEE80211_MESH_SEC_SECURED;
1080 1081 1082 1083

	return 0;
}

1084
static int ieee80211_update_mesh_config(struct wiphy *wiphy,
1085 1086
					struct net_device *dev, u32 mask,
					const struct mesh_config *nconf)
1087 1088 1089
{
	struct mesh_config *conf;
	struct ieee80211_sub_if_data *sdata;
1090 1091
	struct ieee80211_if_mesh *ifmsh;

1092
	sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1093
	ifmsh = &sdata->u.mesh;
1094 1095 1096 1097 1098 1099 1100 1101 1102 1103 1104 1105 1106 1107 1108

	/* Set the config options which we are interested in setting */
	conf = &(sdata->u.mesh.mshcfg);
	if (_chg_mesh_attr(NL80211_MESHCONF_RETRY_TIMEOUT, mask))
		conf->dot11MeshRetryTimeout = nconf->dot11MeshRetryTimeout;
	if (_chg_mesh_attr(NL80211_MESHCONF_CONFIRM_TIMEOUT, mask))
		conf->dot11MeshConfirmTimeout = nconf->dot11MeshConfirmTimeout;
	if (_chg_mesh_attr(NL80211_MESHCONF_HOLDING_TIMEOUT, mask))
		conf->dot11MeshHoldingTimeout = nconf->dot11MeshHoldingTimeout;
	if (_chg_mesh_attr(NL80211_MESHCONF_MAX_PEER_LINKS, mask))
		conf->dot11MeshMaxPeerLinks = nconf->dot11MeshMaxPeerLinks;
	if (_chg_mesh_attr(NL80211_MESHCONF_MAX_RETRIES, mask))
		conf->dot11MeshMaxRetries = nconf->dot11MeshMaxRetries;
	if (_chg_mesh_attr(NL80211_MESHCONF_TTL, mask))
		conf->dot11MeshTTL = nconf->dot11MeshTTL;
1109 1110
	if (_chg_mesh_attr(NL80211_MESHCONF_ELEMENT_TTL, mask))
		conf->dot11MeshTTL = nconf->element_ttl;
1111 1112 1113 1114 1115 1116 1117 1118 1119 1120 1121 1122 1123 1124 1125 1126 1127 1128 1129
	if (_chg_mesh_attr(NL80211_MESHCONF_AUTO_OPEN_PLINKS, mask))
		conf->auto_open_plinks = nconf->auto_open_plinks;
	if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES, mask))
		conf->dot11MeshHWMPmaxPREQretries =
			nconf->dot11MeshHWMPmaxPREQretries;
	if (_chg_mesh_attr(NL80211_MESHCONF_PATH_REFRESH_TIME, mask))
		conf->path_refresh_time = nconf->path_refresh_time;
	if (_chg_mesh_attr(NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT, mask))
		conf->min_discovery_timeout = nconf->min_discovery_timeout;
	if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT, mask))
		conf->dot11MeshHWMPactivePathTimeout =
			nconf->dot11MeshHWMPactivePathTimeout;
	if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL, mask))
		conf->dot11MeshHWMPpreqMinInterval =
			nconf->dot11MeshHWMPpreqMinInterval;
	if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME,
			   mask))
		conf->dot11MeshHWMPnetDiameterTraversalTime =
			nconf->dot11MeshHWMPnetDiameterTraversalTime;
1130 1131 1132 1133
	if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_ROOTMODE, mask)) {
		conf->dot11MeshHWMPRootMode = nconf->dot11MeshHWMPRootMode;
		ieee80211_mesh_root_setup(ifmsh);
	}
1134 1135 1136
	return 0;
}

1137 1138 1139 1140 1141 1142
static int ieee80211_join_mesh(struct wiphy *wiphy, struct net_device *dev,
			       const struct mesh_config *conf,
			       const struct mesh_setup *setup)
{
	struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
	struct ieee80211_if_mesh *ifmsh = &sdata->u.mesh;
1143
	int err;
1144

1145 1146 1147 1148
	memcpy(&ifmsh->mshcfg, conf, sizeof(struct mesh_config));
	err = copy_mesh_setup(ifmsh, setup);
	if (err)
		return err;
1149 1150 1151 1152 1153 1154 1155 1156 1157 1158 1159 1160 1161
	ieee80211_start_mesh(sdata);

	return 0;
}

static int ieee80211_leave_mesh(struct wiphy *wiphy, struct net_device *dev)
{
	struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);

	ieee80211_stop_mesh(sdata);

	return 0;
}
1162 1163
#endif

1164 1165 1166 1167 1168 1169 1170 1171 1172 1173
static int ieee80211_change_bss(struct wiphy *wiphy,
				struct net_device *dev,
				struct bss_parameters *params)
{
	struct ieee80211_sub_if_data *sdata;
	u32 changed = 0;

	sdata = IEEE80211_DEV_TO_SUB_IF(dev);

	if (params->use_cts_prot >= 0) {
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Johannes Berg 已提交
1174
		sdata->vif.bss_conf.use_cts_prot = params->use_cts_prot;
1175 1176 1177
		changed |= BSS_CHANGED_ERP_CTS_PROT;
	}
	if (params->use_short_preamble >= 0) {
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Johannes Berg 已提交
1178
		sdata->vif.bss_conf.use_short_preamble =
1179 1180 1181
			params->use_short_preamble;
		changed |= BSS_CHANGED_ERP_PREAMBLE;
	}
1182 1183 1184 1185 1186 1187 1188

	if (!sdata->vif.bss_conf.use_short_slot &&
	    sdata->local->hw.conf.channel->band == IEEE80211_BAND_5GHZ) {
		sdata->vif.bss_conf.use_short_slot = true;
		changed |= BSS_CHANGED_ERP_SLOT;
	}

1189
	if (params->use_short_slot_time >= 0) {
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Johannes Berg 已提交
1190
		sdata->vif.bss_conf.use_short_slot =
1191 1192 1193 1194
			params->use_short_slot_time;
		changed |= BSS_CHANGED_ERP_SLOT;
	}

1195 1196 1197 1198 1199 1200 1201 1202 1203 1204 1205 1206 1207 1208 1209 1210 1211 1212
	if (params->basic_rates) {
		int i, j;
		u32 rates = 0;
		struct ieee80211_local *local = wiphy_priv(wiphy);
		struct ieee80211_supported_band *sband =
			wiphy->bands[local->oper_channel->band];

		for (i = 0; i < params->basic_rates_len; i++) {
			int rate = (params->basic_rates[i] & 0x7f) * 5;
			for (j = 0; j < sband->n_bitrates; j++) {
				if (sband->bitrates[j].bitrate == rate)
					rates |= BIT(j);
			}
		}
		sdata->vif.bss_conf.basic_rates = rates;
		changed |= BSS_CHANGED_BASIC_RATES;
	}

1213 1214 1215 1216 1217 1218 1219
	if (params->ap_isolate >= 0) {
		if (params->ap_isolate)
			sdata->flags |= IEEE80211_SDATA_DONT_BRIDGE_PACKETS;
		else
			sdata->flags &= ~IEEE80211_SDATA_DONT_BRIDGE_PACKETS;
	}

1220 1221 1222 1223 1224 1225
	if (params->ht_opmode >= 0) {
		sdata->vif.bss_conf.ht_operation_mode =
			(u16) params->ht_opmode;
		changed |= BSS_CHANGED_HT;
	}

1226 1227 1228 1229 1230
	ieee80211_bss_info_change_notify(sdata, changed);

	return 0;
}

1231 1232 1233 1234 1235 1236 1237 1238 1239 1240 1241 1242 1243 1244
static int ieee80211_set_txq_params(struct wiphy *wiphy,
				    struct ieee80211_txq_params *params)
{
	struct ieee80211_local *local = wiphy_priv(wiphy);
	struct ieee80211_tx_queue_params p;

	if (!local->ops->conf_tx)
		return -EOPNOTSUPP;

	memset(&p, 0, sizeof(p));
	p.aifs = params->aifs;
	p.cw_max = params->cwmax;
	p.cw_min = params->cwmin;
	p.txop = params->txop;
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Kalle Valo 已提交
1245 1246 1247 1248 1249 1250 1251

	/*
	 * Setting tx queue params disables u-apsd because it's only
	 * called in master mode.
	 */
	p.uapsd = false;

1252
	if (drv_conf_tx(local, params->queue, &p)) {
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Joe Perches 已提交
1253 1254 1255
		wiphy_debug(local->hw.wiphy,
			    "failed to set TX queue parameters for queue %d\n",
			    params->queue);
1256 1257 1258 1259 1260 1261
		return -EINVAL;
	}

	return 0;
}

1262
static int ieee80211_set_channel(struct wiphy *wiphy,
1263
				 struct net_device *netdev,
1264
				 struct ieee80211_channel *chan,
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Sujith 已提交
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				 enum nl80211_channel_type channel_type)
1266 1267
{
	struct ieee80211_local *local = wiphy_priv(wiphy);
1268
	struct ieee80211_sub_if_data *sdata = NULL;
1269 1270 1271
	struct ieee80211_channel *old_oper;
	enum nl80211_channel_type old_oper_type;
	enum nl80211_channel_type old_vif_oper_type= NL80211_CHAN_NO_HT;
1272 1273 1274

	if (netdev)
		sdata = IEEE80211_DEV_TO_SUB_IF(netdev);
1275

1276 1277 1278 1279
	switch (ieee80211_get_channel_mode(local, NULL)) {
	case CHAN_MODE_HOPPING:
		return -EBUSY;
	case CHAN_MODE_FIXED:
1280 1281 1282
		if (local->oper_channel != chan)
			return -EBUSY;
		if (!sdata && local->_oper_channel_type == channel_type)
1283
			return 0;
1284
		break;
1285 1286 1287
	case CHAN_MODE_UNDEFINED:
		break;
	}
1288

1289 1290 1291
	if (sdata)
		old_vif_oper_type = sdata->vif.bss_conf.channel_type;
	old_oper_type = local->_oper_channel_type;
1292

1293 1294 1295
	if (!ieee80211_set_channel_type(local, sdata, channel_type))
		return -EBUSY;

1296 1297 1298 1299 1300 1301 1302 1303 1304 1305
	old_oper = local->oper_channel;
	local->oper_channel = chan;

	/* Update driver if changes were actually made. */
	if ((old_oper != local->oper_channel) ||
	    (old_oper_type != local->_oper_channel_type))
		ieee80211_hw_config(local, IEEE80211_CONF_CHANGE_CHANNEL);

	if ((sdata && sdata->vif.type != NL80211_IFTYPE_MONITOR) &&
	    old_vif_oper_type != sdata->vif.bss_conf.channel_type)
1306 1307 1308
		ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_HT);

	return 0;
1309 1310
}

1311
#ifdef CONFIG_PM
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static int ieee80211_suspend(struct wiphy *wiphy,
			     struct cfg80211_wowlan *wowlan)
1314
{
1315
	return __ieee80211_suspend(wiphy_priv(wiphy), wowlan);
1316 1317 1318 1319 1320 1321 1322 1323 1324 1325 1326
}

static int ieee80211_resume(struct wiphy *wiphy)
{
	return __ieee80211_resume(wiphy_priv(wiphy));
}
#else
#define ieee80211_suspend NULL
#define ieee80211_resume NULL
#endif

1327 1328 1329 1330
static int ieee80211_scan(struct wiphy *wiphy,
			  struct net_device *dev,
			  struct cfg80211_scan_request *req)
{
1331
	struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1332

1333 1334 1335 1336 1337 1338 1339 1340 1341
	switch (ieee80211_vif_type_p2p(&sdata->vif)) {
	case NL80211_IFTYPE_STATION:
	case NL80211_IFTYPE_ADHOC:
	case NL80211_IFTYPE_MESH_POINT:
	case NL80211_IFTYPE_P2P_CLIENT:
		break;
	case NL80211_IFTYPE_P2P_GO:
		if (sdata->local->ops->hw_scan)
			break;
1342 1343 1344 1345 1346
		/*
		 * FIXME: implement NoA while scanning in software,
		 * for now fall through to allow scanning only when
		 * beaconing hasn't been configured yet
		 */
1347 1348 1349 1350 1351 1352 1353
	case NL80211_IFTYPE_AP:
		if (sdata->u.ap.beacon)
			return -EOPNOTSUPP;
		break;
	default:
		return -EOPNOTSUPP;
	}
1354 1355 1356 1357

	return ieee80211_request_scan(sdata, req);
}

1358 1359 1360 1361 1362 1363 1364 1365 1366 1367 1368 1369 1370 1371
static int
ieee80211_sched_scan_start(struct wiphy *wiphy,
			   struct net_device *dev,
			   struct cfg80211_sched_scan_request *req)
{
	struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);

	if (!sdata->local->ops->sched_scan_start)
		return -EOPNOTSUPP;

	return ieee80211_request_sched_scan_start(sdata, req);
}

static int
1372
ieee80211_sched_scan_stop(struct wiphy *wiphy, struct net_device *dev)
1373 1374 1375 1376 1377 1378
{
	struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);

	if (!sdata->local->ops->sched_scan_stop)
		return -EOPNOTSUPP;

1379
	return ieee80211_request_sched_scan_stop(sdata);
1380 1381
}

1382 1383 1384
static int ieee80211_auth(struct wiphy *wiphy, struct net_device *dev,
			  struct cfg80211_auth_request *req)
{
1385
	return ieee80211_mgd_auth(IEEE80211_DEV_TO_SUB_IF(dev), req);
1386 1387 1388 1389 1390
}

static int ieee80211_assoc(struct wiphy *wiphy, struct net_device *dev,
			   struct cfg80211_assoc_request *req)
{
1391 1392 1393 1394 1395 1396 1397 1398 1399 1400 1401 1402 1403 1404
	struct ieee80211_local *local = wiphy_priv(wiphy);
	struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);

	switch (ieee80211_get_channel_mode(local, sdata)) {
	case CHAN_MODE_HOPPING:
		return -EBUSY;
	case CHAN_MODE_FIXED:
		if (local->oper_channel == req->bss->channel)
			break;
		return -EBUSY;
	case CHAN_MODE_UNDEFINED:
		break;
	}

1405
	return ieee80211_mgd_assoc(IEEE80211_DEV_TO_SUB_IF(dev), req);
1406 1407 1408
}

static int ieee80211_deauth(struct wiphy *wiphy, struct net_device *dev,
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Johannes Berg 已提交
1409 1410
			    struct cfg80211_deauth_request *req,
			    void *cookie)
1411
{
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1412 1413
	return ieee80211_mgd_deauth(IEEE80211_DEV_TO_SUB_IF(dev),
				    req, cookie);
1414 1415 1416
}

static int ieee80211_disassoc(struct wiphy *wiphy, struct net_device *dev,
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Johannes Berg 已提交
1417 1418
			      struct cfg80211_disassoc_request *req,
			      void *cookie)
1419
{
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	return ieee80211_mgd_disassoc(IEEE80211_DEV_TO_SUB_IF(dev),
				      req, cookie);
1422 1423
}

1424 1425 1426
static int ieee80211_join_ibss(struct wiphy *wiphy, struct net_device *dev,
			       struct cfg80211_ibss_params *params)
{
1427
	struct ieee80211_local *local = wiphy_priv(wiphy);
1428 1429
	struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);

1430 1431 1432 1433 1434 1435 1436 1437 1438 1439 1440 1441 1442
	switch (ieee80211_get_channel_mode(local, sdata)) {
	case CHAN_MODE_HOPPING:
		return -EBUSY;
	case CHAN_MODE_FIXED:
		if (!params->channel_fixed)
			return -EBUSY;
		if (local->oper_channel == params->channel)
			break;
		return -EBUSY;
	case CHAN_MODE_UNDEFINED:
		break;
	}

1443 1444 1445 1446 1447 1448 1449 1450 1451 1452
	return ieee80211_ibss_join(sdata, params);
}

static int ieee80211_leave_ibss(struct wiphy *wiphy, struct net_device *dev)
{
	struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);

	return ieee80211_ibss_leave(sdata);
}

1453 1454 1455
static int ieee80211_set_wiphy_params(struct wiphy *wiphy, u32 changed)
{
	struct ieee80211_local *local = wiphy_priv(wiphy);
1456
	int err;
1457

1458 1459 1460 1461 1462 1463 1464
	if (changed & WIPHY_PARAM_FRAG_THRESHOLD) {
		err = drv_set_frag_threshold(local, wiphy->frag_threshold);

		if (err)
			return err;
	}

1465 1466 1467 1468 1469 1470 1471
	if (changed & WIPHY_PARAM_COVERAGE_CLASS) {
		err = drv_set_coverage_class(local, wiphy->coverage_class);

		if (err)
			return err;
	}

1472
	if (changed & WIPHY_PARAM_RTS_THRESHOLD) {
1473
		err = drv_set_rts_threshold(local, wiphy->rts_threshold);
1474

1475 1476
		if (err)
			return err;
1477 1478 1479 1480 1481 1482 1483 1484 1485 1486 1487 1488 1489
	}

	if (changed & WIPHY_PARAM_RETRY_SHORT)
		local->hw.conf.short_frame_max_tx_count = wiphy->retry_short;
	if (changed & WIPHY_PARAM_RETRY_LONG)
		local->hw.conf.long_frame_max_tx_count = wiphy->retry_long;
	if (changed &
	    (WIPHY_PARAM_RETRY_SHORT | WIPHY_PARAM_RETRY_LONG))
		ieee80211_hw_config(local, IEEE80211_CONF_CHANGE_RETRY_LIMITS);

	return 0;
}

1490
static int ieee80211_set_tx_power(struct wiphy *wiphy,
1491
				  enum nl80211_tx_power_setting type, int mbm)
1492 1493 1494 1495 1496 1497
{
	struct ieee80211_local *local = wiphy_priv(wiphy);
	struct ieee80211_channel *chan = local->hw.conf.channel;
	u32 changes = 0;

	switch (type) {
1498
	case NL80211_TX_POWER_AUTOMATIC:
1499 1500
		local->user_power_level = -1;
		break;
1501 1502 1503 1504
	case NL80211_TX_POWER_LIMITED:
		if (mbm < 0 || (mbm % 100))
			return -EOPNOTSUPP;
		local->user_power_level = MBM_TO_DBM(mbm);
1505
		break;
1506 1507 1508
	case NL80211_TX_POWER_FIXED:
		if (mbm < 0 || (mbm % 100))
			return -EOPNOTSUPP;
1509
		/* TODO: move to cfg80211 when it knows the channel */
1510
		if (MBM_TO_DBM(mbm) > chan->max_power)
1511
			return -EINVAL;
1512
		local->user_power_level = MBM_TO_DBM(mbm);
1513 1514 1515 1516 1517 1518 1519 1520 1521 1522 1523 1524 1525 1526 1527 1528 1529
		break;
	}

	ieee80211_hw_config(local, changes);

	return 0;
}

static int ieee80211_get_tx_power(struct wiphy *wiphy, int *dbm)
{
	struct ieee80211_local *local = wiphy_priv(wiphy);

	*dbm = local->hw.conf.power_level;

	return 0;
}

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static int ieee80211_set_wds_peer(struct wiphy *wiphy, struct net_device *dev,
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1531
				  const u8 *addr)
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{
	struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);

	memcpy(&sdata->u.wds.remote_addr, addr, ETH_ALEN);

	return 0;
}

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Johannes Berg 已提交
1540 1541 1542 1543 1544 1545 1546
static void ieee80211_rfkill_poll(struct wiphy *wiphy)
{
	struct ieee80211_local *local = wiphy_priv(wiphy);

	drv_rfkill_poll(local);
}

1547
#ifdef CONFIG_NL80211_TESTMODE
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Johannes Berg 已提交
1548
static int ieee80211_testmode_cmd(struct wiphy *wiphy, void *data, int len)
1549 1550 1551 1552 1553 1554 1555 1556
{
	struct ieee80211_local *local = wiphy_priv(wiphy);

	if (!local->ops->testmode_cmd)
		return -EOPNOTSUPP;

	return local->ops->testmode_cmd(&local->hw, data, len);
}
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Wey-Yi Guy 已提交
1557 1558 1559 1560 1561 1562 1563 1564 1565 1566 1567 1568 1569

static int ieee80211_testmode_dump(struct wiphy *wiphy,
				   struct sk_buff *skb,
				   struct netlink_callback *cb,
				   void *data, int len)
{
	struct ieee80211_local *local = wiphy_priv(wiphy);

	if (!local->ops->testmode_dump)
		return -EOPNOTSUPP;

	return local->ops->testmode_dump(&local->hw, skb, cb, data, len);
}
1570 1571
#endif

1572 1573 1574 1575 1576 1577 1578
int __ieee80211_request_smps(struct ieee80211_sub_if_data *sdata,
			     enum ieee80211_smps_mode smps_mode)
{
	const u8 *ap;
	enum ieee80211_smps_mode old_req;
	int err;

1579 1580
	lockdep_assert_held(&sdata->u.mgd.mtx);

1581 1582 1583 1584 1585 1586 1587 1588 1589 1590 1591 1592
	old_req = sdata->u.mgd.req_smps;
	sdata->u.mgd.req_smps = smps_mode;

	if (old_req == smps_mode &&
	    smps_mode != IEEE80211_SMPS_AUTOMATIC)
		return 0;

	/*
	 * If not associated, or current association is not an HT
	 * association, there's no need to send an action frame.
	 */
	if (!sdata->u.mgd.associated ||
1593
	    sdata->vif.bss_conf.channel_type == NL80211_CHAN_NO_HT) {
1594
		mutex_lock(&sdata->local->iflist_mtx);
1595
		ieee80211_recalc_smps(sdata->local);
1596 1597 1598 1599
		mutex_unlock(&sdata->local->iflist_mtx);
		return 0;
	}

1600
	ap = sdata->u.mgd.associated->bssid;
1601 1602 1603 1604 1605 1606 1607 1608 1609 1610 1611 1612 1613 1614 1615 1616 1617

	if (smps_mode == IEEE80211_SMPS_AUTOMATIC) {
		if (sdata->u.mgd.powersave)
			smps_mode = IEEE80211_SMPS_DYNAMIC;
		else
			smps_mode = IEEE80211_SMPS_OFF;
	}

	/* send SM PS frame to AP */
	err = ieee80211_send_smps_action(sdata, smps_mode,
					 ap, ap);
	if (err)
		sdata->u.mgd.req_smps = old_req;

	return err;
}

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1618 1619 1620 1621 1622 1623
static int ieee80211_set_power_mgmt(struct wiphy *wiphy, struct net_device *dev,
				    bool enabled, int timeout)
{
	struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
	struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);

1624 1625 1626
	if (sdata->vif.type != NL80211_IFTYPE_STATION)
		return -EOPNOTSUPP;

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Johannes Berg 已提交
1627 1628 1629 1630
	if (!(local->hw.flags & IEEE80211_HW_SUPPORTS_PS))
		return -EOPNOTSUPP;

	if (enabled == sdata->u.mgd.powersave &&
1631
	    timeout == local->dynamic_ps_forced_timeout)
J
Johannes Berg 已提交
1632 1633 1634
		return 0;

	sdata->u.mgd.powersave = enabled;
1635
	local->dynamic_ps_forced_timeout = timeout;
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Johannes Berg 已提交
1636

1637 1638 1639 1640 1641
	/* no change, but if automatic follow powersave */
	mutex_lock(&sdata->u.mgd.mtx);
	__ieee80211_request_smps(sdata, sdata->u.mgd.req_smps);
	mutex_unlock(&sdata->u.mgd.mtx);

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Johannes Berg 已提交
1642 1643 1644 1645 1646 1647 1648 1649
	if (local->hw.flags & IEEE80211_HW_SUPPORTS_DYNAMIC_PS)
		ieee80211_hw_config(local, IEEE80211_CONF_CHANGE_PS);

	ieee80211_recalc_ps(local, -1);

	return 0;
}

1650 1651 1652 1653 1654 1655 1656 1657 1658 1659 1660 1661 1662 1663 1664 1665
static int ieee80211_set_cqm_rssi_config(struct wiphy *wiphy,
					 struct net_device *dev,
					 s32 rssi_thold, u32 rssi_hyst)
{
	struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
	struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
	struct ieee80211_vif *vif = &sdata->vif;
	struct ieee80211_bss_conf *bss_conf = &vif->bss_conf;

	if (rssi_thold == bss_conf->cqm_rssi_thold &&
	    rssi_hyst == bss_conf->cqm_rssi_hyst)
		return 0;

	bss_conf->cqm_rssi_thold = rssi_thold;
	bss_conf->cqm_rssi_hyst = rssi_hyst;

1666 1667 1668 1669 1670 1671
	if (!(local->hw.flags & IEEE80211_HW_SUPPORTS_CQM_RSSI)) {
		if (sdata->vif.type != NL80211_IFTYPE_STATION)
			return -EOPNOTSUPP;
		return 0;
	}

1672 1673 1674 1675 1676 1677 1678
	/* tell the driver upon association, unless already associated */
	if (sdata->u.mgd.associated)
		ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_CQM);

	return 0;
}

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1679 1680 1681 1682 1683 1684 1685
static int ieee80211_set_bitrate_mask(struct wiphy *wiphy,
				      struct net_device *dev,
				      const u8 *addr,
				      const struct cfg80211_bitrate_mask *mask)
{
	struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
	struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
1686
	int i, ret;
1687

1688 1689 1690 1691 1692
	if (local->hw.flags & IEEE80211_HW_HAS_RATE_CONTROL) {
		ret = drv_set_bitrate_mask(local, sdata, mask);
		if (ret)
			return ret;
	}
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Johannes Berg 已提交
1693

1694 1695
	for (i = 0; i < IEEE80211_NUM_BANDS; i++)
		sdata->rc_rateidx_mask[i] = mask->control[i].legacy;
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Johannes Berg 已提交
1696

1697
	return 0;
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1698 1699
}

1700 1701 1702 1703 1704 1705 1706 1707 1708 1709 1710 1711 1712 1713 1714 1715 1716 1717 1718 1719 1720 1721 1722 1723 1724 1725 1726 1727 1728 1729 1730
static int ieee80211_remain_on_channel_hw(struct ieee80211_local *local,
					  struct net_device *dev,
					  struct ieee80211_channel *chan,
					  enum nl80211_channel_type chantype,
					  unsigned int duration, u64 *cookie)
{
	int ret;
	u32 random_cookie;

	lockdep_assert_held(&local->mtx);

	if (local->hw_roc_cookie)
		return -EBUSY;
	/* must be nonzero */
	random_cookie = random32() | 1;

	*cookie = random_cookie;
	local->hw_roc_dev = dev;
	local->hw_roc_cookie = random_cookie;
	local->hw_roc_channel = chan;
	local->hw_roc_channel_type = chantype;
	local->hw_roc_duration = duration;
	ret = drv_remain_on_channel(local, chan, chantype, duration);
	if (ret) {
		local->hw_roc_channel = NULL;
		local->hw_roc_cookie = 0;
	}

	return ret;
}

1731 1732 1733 1734 1735 1736 1737 1738
static int ieee80211_remain_on_channel(struct wiphy *wiphy,
				       struct net_device *dev,
				       struct ieee80211_channel *chan,
				       enum nl80211_channel_type channel_type,
				       unsigned int duration,
				       u64 *cookie)
{
	struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1739 1740 1741 1742 1743 1744 1745 1746 1747
	struct ieee80211_local *local = sdata->local;

	if (local->ops->remain_on_channel) {
		int ret;

		mutex_lock(&local->mtx);
		ret = ieee80211_remain_on_channel_hw(local, dev,
						     chan, channel_type,
						     duration, cookie);
1748
		local->hw_roc_for_tx = false;
1749 1750 1751 1752
		mutex_unlock(&local->mtx);

		return ret;
	}
1753 1754 1755 1756 1757

	return ieee80211_wk_remain_on_channel(sdata, chan, channel_type,
					      duration, cookie);
}

1758 1759 1760 1761 1762 1763 1764 1765 1766 1767 1768 1769 1770 1771 1772 1773 1774 1775 1776 1777 1778 1779
static int ieee80211_cancel_remain_on_channel_hw(struct ieee80211_local *local,
						 u64 cookie)
{
	int ret;

	lockdep_assert_held(&local->mtx);

	if (local->hw_roc_cookie != cookie)
		return -ENOENT;

	ret = drv_cancel_remain_on_channel(local);
	if (ret)
		return ret;

	local->hw_roc_cookie = 0;
	local->hw_roc_channel = NULL;

	ieee80211_recalc_idle(local);

	return 0;
}

1780 1781 1782 1783 1784
static int ieee80211_cancel_remain_on_channel(struct wiphy *wiphy,
					      struct net_device *dev,
					      u64 cookie)
{
	struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1785 1786 1787 1788 1789 1790 1791 1792 1793 1794 1795
	struct ieee80211_local *local = sdata->local;

	if (local->ops->cancel_remain_on_channel) {
		int ret;

		mutex_lock(&local->mtx);
		ret = ieee80211_cancel_remain_on_channel_hw(local, cookie);
		mutex_unlock(&local->mtx);

		return ret;
	}
1796 1797 1798 1799

	return ieee80211_wk_cancel_remain_on_channel(sdata, cookie);
}

1800 1801 1802 1803 1804 1805 1806 1807 1808 1809 1810 1811 1812 1813 1814 1815 1816 1817 1818 1819 1820 1821
static enum work_done_result
ieee80211_offchan_tx_done(struct ieee80211_work *wk, struct sk_buff *skb)
{
	/*
	 * Use the data embedded in the work struct for reporting
	 * here so if the driver mangled the SKB before dropping
	 * it (which is the only way we really should get here)
	 * then we don't report mangled data.
	 *
	 * If there was no wait time, then by the time we get here
	 * the driver will likely not have reported the status yet,
	 * so in that case userspace will have to deal with it.
	 */

	if (wk->offchan_tx.wait && wk->offchan_tx.frame)
		cfg80211_mgmt_tx_status(wk->sdata->dev,
					(unsigned long) wk->offchan_tx.frame,
					wk->ie, wk->ie_len, false, GFP_KERNEL);

	return WORK_DONE_DESTROY;
}

1822
static int ieee80211_mgmt_tx(struct wiphy *wiphy, struct net_device *dev,
1823
			     struct ieee80211_channel *chan, bool offchan,
1824
			     enum nl80211_channel_type channel_type,
1825
			     bool channel_type_valid, unsigned int wait,
1826
			     const u8 *buf, size_t len, u64 *cookie)
1827
{
1828 1829 1830 1831
	struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
	struct ieee80211_local *local = sdata->local;
	struct sk_buff *skb;
	struct sta_info *sta;
1832
	struct ieee80211_work *wk;
1833 1834 1835
	const struct ieee80211_mgmt *mgmt = (void *)buf;
	u32 flags = IEEE80211_TX_INTFL_NL80211_FRAME_TX |
		    IEEE80211_TX_CTL_REQ_TX_STATUS;
1836
	bool is_offchan = false;
1837

1838 1839 1840
	/* Check that we are on the requested channel for transmission */
	if (chan != local->tmp_channel &&
	    chan != local->oper_channel)
1841
		is_offchan = true;
1842 1843 1844
	if (channel_type_valid &&
	    (channel_type != local->tmp_channel_type &&
	     channel_type != local->_oper_channel_type))
1845 1846
		is_offchan = true;

1847 1848 1849 1850 1851 1852
	if (chan == local->hw_roc_channel) {
		/* TODO: check channel type? */
		is_offchan = false;
		flags |= IEEE80211_TX_CTL_TX_OFFCHAN;
	}

1853
	if (is_offchan && !offchan)
1854 1855 1856 1857
		return -EBUSY;

	switch (sdata->vif.type) {
	case NL80211_IFTYPE_ADHOC:
1858 1859 1860
	case NL80211_IFTYPE_AP:
	case NL80211_IFTYPE_AP_VLAN:
	case NL80211_IFTYPE_P2P_GO:
1861
	case NL80211_IFTYPE_MESH_POINT:
1862 1863
		if (!ieee80211_is_action(mgmt->frame_control) ||
		    mgmt->u.action.category == WLAN_CATEGORY_PUBLIC)
1864 1865 1866 1867 1868 1869 1870 1871
			break;
		rcu_read_lock();
		sta = sta_info_get(sdata, mgmt->da);
		rcu_read_unlock();
		if (!sta)
			return -ENOLINK;
		break;
	case NL80211_IFTYPE_STATION:
1872
	case NL80211_IFTYPE_P2P_CLIENT:
1873 1874 1875 1876 1877 1878 1879 1880 1881 1882 1883 1884 1885 1886 1887 1888 1889
		break;
	default:
		return -EOPNOTSUPP;
	}

	skb = dev_alloc_skb(local->hw.extra_tx_headroom + len);
	if (!skb)
		return -ENOMEM;
	skb_reserve(skb, local->hw.extra_tx_headroom);

	memcpy(skb_put(skb, len), buf, len);

	IEEE80211_SKB_CB(skb)->flags = flags;

	skb->dev = sdata->dev;

	*cookie = (unsigned long) skb;
1890

1891 1892 1893 1894 1895 1896 1897 1898 1899 1900 1901 1902 1903 1904 1905 1906 1907 1908 1909 1910 1911 1912 1913 1914 1915 1916 1917
	if (is_offchan && local->ops->offchannel_tx) {
		int ret;

		IEEE80211_SKB_CB(skb)->band = chan->band;

		mutex_lock(&local->mtx);

		if (local->hw_offchan_tx_cookie) {
			mutex_unlock(&local->mtx);
			return -EBUSY;
		}

		/* TODO: bitrate control, TX processing? */
		ret = drv_offchannel_tx(local, skb, chan, channel_type, wait);

		if (ret == 0)
			local->hw_offchan_tx_cookie = *cookie;
		mutex_unlock(&local->mtx);

		/*
		 * Allow driver to return 1 to indicate it wants to have the
		 * frame transmitted with a remain_on_channel + regular TX.
		 */
		if (ret != 1)
			return ret;
	}

1918 1919 1920 1921 1922 1923 1924 1925 1926 1927 1928 1929 1930 1931 1932 1933 1934 1935 1936 1937 1938 1939 1940 1941 1942 1943 1944 1945 1946 1947 1948 1949 1950 1951 1952 1953 1954 1955
	if (is_offchan && local->ops->remain_on_channel) {
		unsigned int duration;
		int ret;

		mutex_lock(&local->mtx);
		/*
		 * If the duration is zero, then the driver
		 * wouldn't actually do anything. Set it to
		 * 100 for now.
		 *
		 * TODO: cancel the off-channel operation
		 *       when we get the SKB's TX status and
		 *       the wait time was zero before.
		 */
		duration = 100;
		if (wait)
			duration = wait;
		ret = ieee80211_remain_on_channel_hw(local, dev, chan,
						     channel_type,
						     duration, cookie);
		if (ret) {
			kfree_skb(skb);
			mutex_unlock(&local->mtx);
			return ret;
		}

		local->hw_roc_for_tx = true;
		local->hw_roc_duration = wait;

		/*
		 * queue up frame for transmission after
		 * ieee80211_ready_on_channel call
		 */

		/* modify cookie to prevent API mismatches */
		*cookie ^= 2;
		IEEE80211_SKB_CB(skb)->flags |= IEEE80211_TX_CTL_TX_OFFCHAN;
		local->hw_roc_skb = skb;
1956
		local->hw_roc_skb_for_status = skb;
1957 1958 1959 1960 1961
		mutex_unlock(&local->mtx);

		return 0;
	}

1962 1963 1964 1965 1966 1967 1968 1969 1970 1971 1972 1973 1974 1975 1976 1977 1978 1979 1980
	/*
	 * Can transmit right away if the channel was the
	 * right one and there's no wait involved... If a
	 * wait is involved, we might otherwise not be on
	 * the right channel for long enough!
	 */
	if (!is_offchan && !wait && !sdata->vif.bss_conf.idle) {
		ieee80211_tx_skb(sdata, skb);
		return 0;
	}

	wk = kzalloc(sizeof(*wk) + len, GFP_KERNEL);
	if (!wk) {
		kfree_skb(skb);
		return -ENOMEM;
	}

	wk->type = IEEE80211_WORK_OFFCHANNEL_TX;
	wk->chan = chan;
1981
	wk->chan_type = channel_type;
1982 1983 1984 1985 1986 1987 1988 1989
	wk->sdata = sdata;
	wk->done = ieee80211_offchan_tx_done;
	wk->offchan_tx.frame = skb;
	wk->offchan_tx.wait = wait;
	wk->ie_len = len;
	memcpy(wk->ie, buf, len);

	ieee80211_add_work(wk);
1990
	return 0;
1991 1992
}

1993 1994 1995 1996 1997 1998 1999 2000 2001 2002
static int ieee80211_mgmt_tx_cancel_wait(struct wiphy *wiphy,
					 struct net_device *dev,
					 u64 cookie)
{
	struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
	struct ieee80211_local *local = sdata->local;
	struct ieee80211_work *wk;
	int ret = -ENOENT;

	mutex_lock(&local->mtx);
2003

2004 2005 2006 2007 2008 2009 2010 2011 2012 2013 2014 2015
	if (local->ops->offchannel_tx_cancel_wait &&
	    local->hw_offchan_tx_cookie == cookie) {
		ret = drv_offchannel_tx_cancel_wait(local);

		if (!ret)
			local->hw_offchan_tx_cookie = 0;

		mutex_unlock(&local->mtx);

		return ret;
	}

2016 2017 2018 2019 2020 2021 2022
	if (local->ops->cancel_remain_on_channel) {
		cookie ^= 2;
		ret = ieee80211_cancel_remain_on_channel_hw(local, cookie);

		if (ret == 0) {
			kfree_skb(local->hw_roc_skb);
			local->hw_roc_skb = NULL;
2023
			local->hw_roc_skb_for_status = NULL;
2024 2025 2026 2027 2028 2029 2030
		}

		mutex_unlock(&local->mtx);

		return ret;
	}

2031 2032 2033 2034 2035 2036 2037 2038 2039 2040 2041 2042 2043 2044 2045 2046 2047 2048 2049 2050 2051
	list_for_each_entry(wk, &local->work_list, list) {
		if (wk->sdata != sdata)
			continue;

		if (wk->type != IEEE80211_WORK_OFFCHANNEL_TX)
			continue;

		if (cookie != (unsigned long) wk->offchan_tx.frame)
			continue;

		wk->timeout = jiffies;

		ieee80211_queue_work(&local->hw, &local->work_work);
		ret = 0;
		break;
	}
	mutex_unlock(&local->mtx);

	return ret;
}

2052 2053 2054 2055 2056 2057 2058 2059 2060 2061 2062 2063 2064 2065 2066 2067 2068
static void ieee80211_mgmt_frame_register(struct wiphy *wiphy,
					  struct net_device *dev,
					  u16 frame_type, bool reg)
{
	struct ieee80211_local *local = wiphy_priv(wiphy);

	if (frame_type != (IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_PROBE_REQ))
		return;

	if (reg)
		local->probe_req_reg++;
	else
		local->probe_req_reg--;

	ieee80211_queue_work(&local->hw, &local->reconfig_filter);
}

2069 2070 2071 2072 2073 2074 2075 2076 2077 2078 2079 2080 2081 2082 2083 2084 2085
static int ieee80211_set_antenna(struct wiphy *wiphy, u32 tx_ant, u32 rx_ant)
{
	struct ieee80211_local *local = wiphy_priv(wiphy);

	if (local->started)
		return -EOPNOTSUPP;

	return drv_set_antenna(local, tx_ant, rx_ant);
}

static int ieee80211_get_antenna(struct wiphy *wiphy, u32 *tx_ant, u32 *rx_ant)
{
	struct ieee80211_local *local = wiphy_priv(wiphy);

	return drv_get_antenna(local, tx_ant, rx_ant);
}

2086 2087 2088 2089 2090 2091 2092 2093 2094 2095 2096 2097 2098 2099 2100
static int ieee80211_set_ringparam(struct wiphy *wiphy, u32 tx, u32 rx)
{
	struct ieee80211_local *local = wiphy_priv(wiphy);

	return drv_set_ringparam(local, tx, rx);
}

static void ieee80211_get_ringparam(struct wiphy *wiphy,
				    u32 *tx, u32 *tx_max, u32 *rx, u32 *rx_max)
{
	struct ieee80211_local *local = wiphy_priv(wiphy);

	drv_get_ringparam(local, tx, tx_max, rx, rx_max);
}

2101 2102 2103
struct cfg80211_ops mac80211_config_ops = {
	.add_virtual_intf = ieee80211_add_iface,
	.del_virtual_intf = ieee80211_del_iface,
2104
	.change_virtual_intf = ieee80211_change_iface,
2105 2106
	.add_key = ieee80211_add_key,
	.del_key = ieee80211_del_key,
2107
	.get_key = ieee80211_get_key,
2108
	.set_default_key = ieee80211_config_default_key,
2109
	.set_default_mgmt_key = ieee80211_config_default_mgmt_key,
2110 2111 2112
	.add_beacon = ieee80211_add_beacon,
	.set_beacon = ieee80211_set_beacon,
	.del_beacon = ieee80211_del_beacon,
2113 2114 2115
	.add_station = ieee80211_add_station,
	.del_station = ieee80211_del_station,
	.change_station = ieee80211_change_station,
2116
	.get_station = ieee80211_get_station,
2117
	.dump_station = ieee80211_dump_station,
2118
	.dump_survey = ieee80211_dump_survey,
2119 2120 2121 2122 2123 2124
#ifdef CONFIG_MAC80211_MESH
	.add_mpath = ieee80211_add_mpath,
	.del_mpath = ieee80211_del_mpath,
	.change_mpath = ieee80211_change_mpath,
	.get_mpath = ieee80211_get_mpath,
	.dump_mpath = ieee80211_dump_mpath,
2125 2126
	.update_mesh_config = ieee80211_update_mesh_config,
	.get_mesh_config = ieee80211_get_mesh_config,
2127 2128
	.join_mesh = ieee80211_join_mesh,
	.leave_mesh = ieee80211_leave_mesh,
2129
#endif
2130
	.change_bss = ieee80211_change_bss,
2131
	.set_txq_params = ieee80211_set_txq_params,
2132
	.set_channel = ieee80211_set_channel,
2133 2134
	.suspend = ieee80211_suspend,
	.resume = ieee80211_resume,
2135
	.scan = ieee80211_scan,
2136 2137
	.sched_scan_start = ieee80211_sched_scan_start,
	.sched_scan_stop = ieee80211_sched_scan_stop,
2138 2139 2140 2141
	.auth = ieee80211_auth,
	.assoc = ieee80211_assoc,
	.deauth = ieee80211_deauth,
	.disassoc = ieee80211_disassoc,
2142 2143
	.join_ibss = ieee80211_join_ibss,
	.leave_ibss = ieee80211_leave_ibss,
2144
	.set_wiphy_params = ieee80211_set_wiphy_params,
2145 2146
	.set_tx_power = ieee80211_set_tx_power,
	.get_tx_power = ieee80211_get_tx_power,
J
Johannes Berg 已提交
2147
	.set_wds_peer = ieee80211_set_wds_peer,
J
Johannes Berg 已提交
2148
	.rfkill_poll = ieee80211_rfkill_poll,
2149
	CFG80211_TESTMODE_CMD(ieee80211_testmode_cmd)
W
Wey-Yi Guy 已提交
2150
	CFG80211_TESTMODE_DUMP(ieee80211_testmode_dump)
J
Johannes Berg 已提交
2151
	.set_power_mgmt = ieee80211_set_power_mgmt,
J
Johannes Berg 已提交
2152
	.set_bitrate_mask = ieee80211_set_bitrate_mask,
2153 2154
	.remain_on_channel = ieee80211_remain_on_channel,
	.cancel_remain_on_channel = ieee80211_cancel_remain_on_channel,
2155
	.mgmt_tx = ieee80211_mgmt_tx,
2156
	.mgmt_tx_cancel_wait = ieee80211_mgmt_tx_cancel_wait,
2157
	.set_cqm_rssi_config = ieee80211_set_cqm_rssi_config,
2158
	.mgmt_frame_register = ieee80211_mgmt_frame_register,
2159 2160
	.set_antenna = ieee80211_set_antenna,
	.get_antenna = ieee80211_get_antenna,
2161 2162
	.set_ringparam = ieee80211_set_ringparam,
	.get_ringparam = ieee80211_get_ringparam,
2163
};