cfg.c 54.8 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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	u64 pn64;
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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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		pn64 = atomic64_read(&key->u.ccmp.tx_pn);
		seq[0] = pn64;
		seq[1] = pn64 >> 8;
		seq[2] = pn64 >> 16;
		seq[3] = pn64 >> 24;
		seq[4] = pn64 >> 32;
		seq[5] = pn64 >> 40;
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		params.seq = seq;
		params.seq_len = 6;
		break;
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	case WLAN_CIPHER_SUITE_AES_CMAC:
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		pn64 = atomic64_read(&key->u.aes_cmac.tx_pn);
		seq[0] = pn64;
		seq[1] = pn64 >> 8;
		seq[2] = pn64 >> 16;
		seq[3] = pn64 >> 24;
		seq[4] = pn64 >> 32;
		seq[5] = pn64 >> 40;
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		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();
426

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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)
440
{
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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);

601 602
	ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_BEACON_ENABLED);
	return 0;
603 604
}

605 606 607 608 609 610 611 612 613
/* 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
Eric Dumazet 已提交
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} __packed;
615 616 617 618 619 620 621 622 623 624 625 626 627 628 629 630 631 632

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);
633
	memcpy(msg->sa, sta->sta.addr, ETH_ALEN);
634 635 636 637 638 639 640 641 642
	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) */

643 644
	skb->dev = sta->sdata->dev;
	skb->protocol = eth_type_trans(skb, sta->sdata->dev);
645
	memset(skb->cb, 0, sizeof(skb->cb));
646
	netif_rx_ni(skb);
647 648 649 650 651 652
}

static void sta_apply_parameters(struct ieee80211_local *local,
				 struct sta_info *sta,
				 struct station_parameters *params)
{
653
	unsigned long flags;
654 655
	u32 rates;
	int i, j;
656
	struct ieee80211_supported_band *sband;
657
	struct ieee80211_sub_if_data *sdata = sta->sdata;
658
	u32 mask, set;
659

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660 661
	sband = local->hw.wiphy->bands[local->oper_channel->band];

662
	spin_lock_irqsave(&sta->flaglock, flags);
663 664
	mask = params->sta_flags_mask;
	set = params->sta_flags_set;
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665

666
	if (mask & BIT(NL80211_STA_FLAG_AUTHORIZED)) {
667
		sta->flags &= ~WLAN_STA_AUTHORIZED;
668
		if (set & BIT(NL80211_STA_FLAG_AUTHORIZED))
669
			sta->flags |= WLAN_STA_AUTHORIZED;
670
	}
671

672
	if (mask & BIT(NL80211_STA_FLAG_SHORT_PREAMBLE)) {
673
		sta->flags &= ~WLAN_STA_SHORT_PREAMBLE;
674
		if (set & BIT(NL80211_STA_FLAG_SHORT_PREAMBLE))
675
			sta->flags |= WLAN_STA_SHORT_PREAMBLE;
676
	}
677

678
	if (mask & BIT(NL80211_STA_FLAG_WME)) {
679
		sta->flags &= ~WLAN_STA_WME;
680 681
		sta->sta.wme = false;
		if (set & BIT(NL80211_STA_FLAG_WME)) {
682
			sta->flags |= WLAN_STA_WME;
683 684
			sta->sta.wme = true;
		}
685
	}
686

687
	if (mask & BIT(NL80211_STA_FLAG_MFP)) {
688
		sta->flags &= ~WLAN_STA_MFP;
689
		if (set & BIT(NL80211_STA_FLAG_MFP))
690
			sta->flags |= WLAN_STA_MFP;
691
	}
692 693 694 695 696 697

	if (mask & BIT(NL80211_STA_FLAG_AUTHENTICATED)) {
		sta->flags &= ~WLAN_STA_AUTH;
		if (set & BIT(NL80211_STA_FLAG_AUTHENTICATED))
			sta->flags |= WLAN_STA_AUTH;
	}
698
	spin_unlock_irqrestore(&sta->flaglock, flags);
699

700 701 702 703 704 705 706
	/*
	 * 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
Johannes Berg 已提交
707 708 709 710 711 712 713
	/*
	 * 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.
	 */

714 715 716 717 718
	if (params->listen_interval >= 0)
		sta->listen_interval = params->listen_interval;

	if (params->supported_rates) {
		rates = 0;
719

720 721
		for (i = 0; i < params->supported_rates_len; i++) {
			int rate = (params->supported_rates[i] & 0x7f) * 5;
722 723
			for (j = 0; j < sband->n_bitrates; j++) {
				if (sband->bitrates[j].bitrate == rate)
724 725 726
					rates |= BIT(j);
			}
		}
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727
		sta->sta.supp_rates[local->oper_channel->band] = rates;
728
	}
729

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730
	if (params->ht_capa)
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731 732
		ieee80211_ht_cap_ie_to_sta_ht_cap(sband,
						  params->ht_capa,
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733
						  &sta->sta.ht_cap);
734

735
	if (ieee80211_vif_is_mesh(&sdata->vif)) {
736
#ifdef CONFIG_MAC80211_MESH
737 738
		if (sdata->u.mesh.security & IEEE80211_MESH_SEC_SECURED)
			switch (params->plink_state) {
739 740 741
			case NL80211_PLINK_LISTEN:
			case NL80211_PLINK_ESTAB:
			case NL80211_PLINK_BLOCKED:
742 743 744 745 746 747 748 749 750 751 752 753 754 755 756
				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;
			}
757
#endif
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758
	}
759 760 761 762 763
}

static int ieee80211_add_station(struct wiphy *wiphy, struct net_device *dev,
				 u8 *mac, struct station_parameters *params)
{
764
	struct ieee80211_local *local = wiphy_priv(wiphy);
765 766
	struct sta_info *sta;
	struct ieee80211_sub_if_data *sdata;
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767
	int err;
768
	int layer2_update;
769 770 771 772

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

773 774
		if (sdata->vif.type != NL80211_IFTYPE_AP_VLAN &&
		    sdata->vif.type != NL80211_IFTYPE_AP)
775 776 777 778
			return -EINVAL;
	} else
		sdata = IEEE80211_DEV_TO_SUB_IF(dev);

779
	if (compare_ether_addr(mac, sdata->vif.addr) == 0)
780 781 782 783 784 785
		return -EINVAL;

	if (is_multicast_ether_addr(mac))
		return -EINVAL;

	sta = sta_info_alloc(sdata, mac, GFP_KERNEL);
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Johannes Berg 已提交
786 787
	if (!sta)
		return -ENOMEM;
788 789 790 791 792

	sta->flags = WLAN_STA_AUTH | WLAN_STA_ASSOC;

	sta_apply_parameters(local, sta, params);

793
	rate_control_rate_init(sta);
794

795 796 797
	layer2_update = sdata->vif.type == NL80211_IFTYPE_AP_VLAN ||
		sdata->vif.type == NL80211_IFTYPE_AP;

798
	err = sta_info_insert_rcu(sta);
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799 800 801 802 803
	if (err) {
		rcu_read_unlock();
		return err;
	}

804
	if (layer2_update)
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		ieee80211_send_layer2_update(sta);

	rcu_read_unlock();

809 810 811 812 813 814
	return 0;
}

static int ieee80211_del_station(struct wiphy *wiphy, struct net_device *dev,
				 u8 *mac)
{
815 816
	struct ieee80211_local *local = wiphy_priv(wiphy);
	struct ieee80211_sub_if_data *sdata;
817

818 819
	sdata = IEEE80211_DEV_TO_SUB_IF(dev);

820 821
	if (mac)
		return sta_info_destroy_addr_bss(sdata, mac);
822

823
	sta_info_flush(local, sdata);
824 825 826 827 828 829 830 831
	return 0;
}

static int ieee80211_change_station(struct wiphy *wiphy,
				    struct net_device *dev,
				    u8 *mac,
				    struct station_parameters *params)
{
832
	struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
833
	struct ieee80211_local *local = wiphy_priv(wiphy);
834 835 836
	struct sta_info *sta;
	struct ieee80211_sub_if_data *vlansdata;

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837 838
	rcu_read_lock();

839
	sta = sta_info_get_bss(sdata, mac);
J
Johannes Berg 已提交
840 841
	if (!sta) {
		rcu_read_unlock();
842
		return -ENOENT;
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843
	}
844

845
	if (params->vlan && params->vlan != sta->sdata->dev) {
846 847
		vlansdata = IEEE80211_DEV_TO_SUB_IF(params->vlan);

848 849
		if (vlansdata->vif.type != NL80211_IFTYPE_AP_VLAN &&
		    vlansdata->vif.type != NL80211_IFTYPE_AP) {
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850
			rcu_read_unlock();
851
			return -EINVAL;
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852
		}
853

854
		if (params->vlan->ieee80211_ptr->use_4addr) {
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855 856
			if (vlansdata->u.vlan.sta) {
				rcu_read_unlock();
857
				return -EBUSY;
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858
			}
859 860 861 862

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

863
		sta->sdata = vlansdata;
864 865 866 867 868
		ieee80211_send_layer2_update(sta);
	}

	sta_apply_parameters(local, sta, params);

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869 870
	rcu_read_unlock();

871 872 873 874
	if (sdata->vif.type == NL80211_IFTYPE_STATION &&
	    params->sta_flags_mask & BIT(NL80211_STA_FLAG_AUTHORIZED))
		ieee80211_recalc_ps(local, -1);

875 876 877
	return 0;
}

878 879 880 881
#ifdef CONFIG_MAC80211_MESH
static int ieee80211_add_mpath(struct wiphy *wiphy, struct net_device *dev,
				 u8 *dst, u8 *next_hop)
{
882
	struct ieee80211_sub_if_data *sdata;
883 884 885 886
	struct mesh_path *mpath;
	struct sta_info *sta;
	int err;

887 888
	sdata = IEEE80211_DEV_TO_SUB_IF(dev);

889
	rcu_read_lock();
890
	sta = sta_info_get(sdata, next_hop);
891 892
	if (!sta) {
		rcu_read_unlock();
893
		return -ENOENT;
894
	}
895

896
	err = mesh_path_add(dst, sdata);
897 898
	if (err) {
		rcu_read_unlock();
899
		return err;
900
	}
901

902
	mpath = mesh_path_lookup(dst, sdata);
903 904 905 906 907
	if (!mpath) {
		rcu_read_unlock();
		return -ENXIO;
	}
	mesh_path_fix_nexthop(mpath, sta);
908

909 910 911 912 913 914 915
	rcu_read_unlock();
	return 0;
}

static int ieee80211_del_mpath(struct wiphy *wiphy, struct net_device *dev,
				 u8 *dst)
{
916 917
	struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);

918
	if (dst)
919
		return mesh_path_del(dst, sdata);
920

921
	mesh_path_flush(sdata);
922 923 924 925 926 927 928
	return 0;
}

static int ieee80211_change_mpath(struct wiphy *wiphy,
				    struct net_device *dev,
				    u8 *dst, u8 *next_hop)
{
929
	struct ieee80211_sub_if_data *sdata;
930 931 932
	struct mesh_path *mpath;
	struct sta_info *sta;

933 934
	sdata = IEEE80211_DEV_TO_SUB_IF(dev);

935 936
	rcu_read_lock();

937
	sta = sta_info_get(sdata, next_hop);
938 939
	if (!sta) {
		rcu_read_unlock();
940
		return -ENOENT;
941
	}
942

943
	mpath = mesh_path_lookup(dst, sdata);
944 945 946 947 948 949
	if (!mpath) {
		rcu_read_unlock();
		return -ENOENT;
	}

	mesh_path_fix_nexthop(mpath, sta);
950

951 952 953 954 955 956 957
	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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958 959 960 961
	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);
962 963 964
	else
		memset(next_hop, 0, ETH_ALEN);

965 966
	pinfo->generation = mesh_paths_generation;

967
	pinfo->filled = MPATH_INFO_FRAME_QLEN |
968
			MPATH_INFO_SN |
969 970 971 972 973 974 975
			MPATH_INFO_METRIC |
			MPATH_INFO_EXPTIME |
			MPATH_INFO_DISCOVERY_TIMEOUT |
			MPATH_INFO_DISCOVERY_RETRIES |
			MPATH_INFO_FLAGS;

	pinfo->frame_qlen = mpath->frame_queue.qlen;
976
	pinfo->sn = mpath->sn;
977 978 979 980 981 982 983 984 985 986 987
	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;
988 989
	if (mpath->flags & MESH_PATH_SN_VALID)
		pinfo->flags |= NL80211_MPATH_FLAG_SN_VALID;
990 991 992 993 994 995 996 997 998 999 1000 1001
	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)

{
1002
	struct ieee80211_sub_if_data *sdata;
1003 1004
	struct mesh_path *mpath;

1005 1006
	sdata = IEEE80211_DEV_TO_SUB_IF(dev);

1007
	rcu_read_lock();
1008
	mpath = mesh_path_lookup(dst, sdata);
1009 1010 1011 1012 1013 1014 1015 1016 1017 1018 1019 1020 1021 1022
	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)
{
1023
	struct ieee80211_sub_if_data *sdata;
1024 1025
	struct mesh_path *mpath;

1026 1027
	sdata = IEEE80211_DEV_TO_SUB_IF(dev);

1028
	rcu_read_lock();
1029
	mpath = mesh_path_lookup_by_idx(idx, sdata);
1030 1031 1032 1033 1034 1035 1036 1037 1038
	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;
}
1039

1040
static int ieee80211_get_mesh_config(struct wiphy *wiphy,
1041 1042 1043 1044 1045 1046 1047 1048 1049 1050 1051 1052 1053 1054 1055
				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;
}

1056 1057 1058 1059 1060 1061
static int copy_mesh_setup(struct ieee80211_if_mesh *ifmsh,
		const struct mesh_setup *setup)
{
	u8 *new_ie;
	const u8 *old_ie;

1062
	/* allocate information elements */
1063
	new_ie = NULL;
1064
	old_ie = ifmsh->ie;
1065

1066 1067
	if (setup->ie_len) {
		new_ie = kmemdup(setup->ie, setup->ie_len,
1068 1069 1070 1071
				GFP_KERNEL);
		if (!new_ie)
			return -ENOMEM;
	}
1072 1073 1074
	ifmsh->ie_len = setup->ie_len;
	ifmsh->ie = new_ie;
	kfree(old_ie);
1075 1076 1077 1078 1079 1080

	/* 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;
1081 1082 1083 1084 1085
	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;
1086 1087 1088 1089

	return 0;
}

1090
static int ieee80211_update_mesh_config(struct wiphy *wiphy,
1091 1092
					struct net_device *dev, u32 mask,
					const struct mesh_config *nconf)
1093 1094 1095
{
	struct mesh_config *conf;
	struct ieee80211_sub_if_data *sdata;
1096 1097
	struct ieee80211_if_mesh *ifmsh;

1098
	sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1099
	ifmsh = &sdata->u.mesh;
1100 1101 1102 1103 1104 1105 1106 1107 1108 1109 1110 1111 1112 1113 1114

	/* 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;
1115 1116
	if (_chg_mesh_attr(NL80211_MESHCONF_ELEMENT_TTL, mask))
		conf->dot11MeshTTL = nconf->element_ttl;
1117 1118 1119 1120 1121 1122 1123 1124 1125 1126 1127 1128 1129 1130 1131 1132 1133 1134 1135
	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;
1136 1137 1138 1139
	if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_ROOTMODE, mask)) {
		conf->dot11MeshHWMPRootMode = nconf->dot11MeshHWMPRootMode;
		ieee80211_mesh_root_setup(ifmsh);
	}
1140
	if (_chg_mesh_attr(NL80211_MESHCONF_GATE_ANNOUNCEMENTS, mask)) {
T
Thomas Pedersen 已提交
1141 1142 1143 1144 1145 1146 1147 1148
		/* our current gate announcement implementation rides on root
		 * announcements, so require this ifmsh to also be a root node
		 * */
		if (nconf->dot11MeshGateAnnouncementProtocol &&
		    !conf->dot11MeshHWMPRootMode) {
			conf->dot11MeshHWMPRootMode = 1;
			ieee80211_mesh_root_setup(ifmsh);
		}
1149 1150 1151
		conf->dot11MeshGateAnnouncementProtocol =
			nconf->dot11MeshGateAnnouncementProtocol;
	}
1152 1153 1154 1155
	if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_RANN_INTERVAL, mask)) {
		conf->dot11MeshHWMPRannInterval =
			nconf->dot11MeshHWMPRannInterval;
	}
1156 1157 1158
	return 0;
}

1159 1160 1161 1162 1163 1164
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;
1165
	int err;
1166

1167 1168 1169 1170
	memcpy(&ifmsh->mshcfg, conf, sizeof(struct mesh_config));
	err = copy_mesh_setup(ifmsh, setup);
	if (err)
		return err;
1171 1172 1173 1174 1175 1176 1177 1178 1179 1180 1181 1182 1183
	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;
}
1184 1185
#endif

1186 1187 1188 1189 1190 1191 1192 1193 1194 1195
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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		sdata->vif.bss_conf.use_cts_prot = params->use_cts_prot;
1197 1198 1199
		changed |= BSS_CHANGED_ERP_CTS_PROT;
	}
	if (params->use_short_preamble >= 0) {
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		sdata->vif.bss_conf.use_short_preamble =
1201 1202 1203
			params->use_short_preamble;
		changed |= BSS_CHANGED_ERP_PREAMBLE;
	}
1204 1205 1206 1207 1208 1209 1210

	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;
	}

1211
	if (params->use_short_slot_time >= 0) {
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		sdata->vif.bss_conf.use_short_slot =
1213 1214 1215 1216
			params->use_short_slot_time;
		changed |= BSS_CHANGED_ERP_SLOT;
	}

1217 1218 1219 1220 1221 1222 1223 1224 1225 1226 1227 1228 1229 1230 1231 1232 1233 1234
	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;
	}

1235 1236 1237 1238 1239 1240 1241
	if (params->ap_isolate >= 0) {
		if (params->ap_isolate)
			sdata->flags |= IEEE80211_SDATA_DONT_BRIDGE_PACKETS;
		else
			sdata->flags &= ~IEEE80211_SDATA_DONT_BRIDGE_PACKETS;
	}

1242 1243 1244 1245 1246 1247
	if (params->ht_opmode >= 0) {
		sdata->vif.bss_conf.ht_operation_mode =
			(u16) params->ht_opmode;
		changed |= BSS_CHANGED_HT;
	}

1248 1249 1250 1251 1252
	ieee80211_bss_info_change_notify(sdata, changed);

	return 0;
}

1253 1254 1255 1256 1257 1258 1259 1260 1261 1262 1263 1264 1265 1266
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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	/*
	 * Setting tx queue params disables u-apsd because it's only
	 * called in master mode.
	 */
	p.uapsd = false;

1274 1275 1276 1277
	if (params->queue >= local->hw.queues)
		return -EINVAL;

	local->tx_conf[params->queue] = p;
1278
	if (drv_conf_tx(local, params->queue, &p)) {
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		wiphy_debug(local->hw.wiphy,
			    "failed to set TX queue parameters for queue %d\n",
			    params->queue);
1282 1283 1284 1285 1286 1287
		return -EINVAL;
	}

	return 0;
}

1288
static int ieee80211_set_channel(struct wiphy *wiphy,
1289
				 struct net_device *netdev,
1290
				 struct ieee80211_channel *chan,
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				 enum nl80211_channel_type channel_type)
1292 1293
{
	struct ieee80211_local *local = wiphy_priv(wiphy);
1294
	struct ieee80211_sub_if_data *sdata = NULL;
1295 1296 1297
	struct ieee80211_channel *old_oper;
	enum nl80211_channel_type old_oper_type;
	enum nl80211_channel_type old_vif_oper_type= NL80211_CHAN_NO_HT;
1298 1299 1300

	if (netdev)
		sdata = IEEE80211_DEV_TO_SUB_IF(netdev);
1301

1302 1303 1304 1305
	switch (ieee80211_get_channel_mode(local, NULL)) {
	case CHAN_MODE_HOPPING:
		return -EBUSY;
	case CHAN_MODE_FIXED:
1306 1307 1308
		if (local->oper_channel != chan)
			return -EBUSY;
		if (!sdata && local->_oper_channel_type == channel_type)
1309
			return 0;
1310
		break;
1311 1312 1313
	case CHAN_MODE_UNDEFINED:
		break;
	}
1314

1315 1316 1317
	if (sdata)
		old_vif_oper_type = sdata->vif.bss_conf.channel_type;
	old_oper_type = local->_oper_channel_type;
1318

1319 1320 1321
	if (!ieee80211_set_channel_type(local, sdata, channel_type))
		return -EBUSY;

1322 1323 1324 1325 1326 1327 1328 1329 1330 1331
	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)
1332 1333 1334
		ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_HT);

	return 0;
1335 1336
}

1337
#ifdef CONFIG_PM
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static int ieee80211_suspend(struct wiphy *wiphy,
			     struct cfg80211_wowlan *wowlan)
1340
{
1341
	return __ieee80211_suspend(wiphy_priv(wiphy), wowlan);
1342 1343 1344 1345 1346 1347 1348 1349 1350 1351 1352
}

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

1353 1354 1355 1356
static int ieee80211_scan(struct wiphy *wiphy,
			  struct net_device *dev,
			  struct cfg80211_scan_request *req)
{
1357
	struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1358

1359 1360 1361 1362 1363 1364 1365 1366 1367
	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;
1368 1369 1370 1371 1372
		/*
		 * FIXME: implement NoA while scanning in software,
		 * for now fall through to allow scanning only when
		 * beaconing hasn't been configured yet
		 */
1373 1374 1375 1376 1377 1378 1379
	case NL80211_IFTYPE_AP:
		if (sdata->u.ap.beacon)
			return -EOPNOTSUPP;
		break;
	default:
		return -EOPNOTSUPP;
	}
1380 1381 1382 1383

	return ieee80211_request_scan(sdata, req);
}

1384 1385 1386 1387 1388 1389 1390 1391 1392 1393 1394 1395 1396 1397
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
1398
ieee80211_sched_scan_stop(struct wiphy *wiphy, struct net_device *dev)
1399 1400 1401 1402 1403 1404
{
	struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);

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

1405
	return ieee80211_request_sched_scan_stop(sdata);
1406 1407
}

1408 1409 1410
static int ieee80211_auth(struct wiphy *wiphy, struct net_device *dev,
			  struct cfg80211_auth_request *req)
{
1411
	return ieee80211_mgd_auth(IEEE80211_DEV_TO_SUB_IF(dev), req);
1412 1413 1414 1415 1416
}

static int ieee80211_assoc(struct wiphy *wiphy, struct net_device *dev,
			   struct cfg80211_assoc_request *req)
{
1417 1418 1419 1420 1421 1422 1423 1424 1425 1426 1427 1428 1429 1430
	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;
	}

1431
	return ieee80211_mgd_assoc(IEEE80211_DEV_TO_SUB_IF(dev), req);
1432 1433 1434
}

static int ieee80211_deauth(struct wiphy *wiphy, struct net_device *dev,
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1435 1436
			    struct cfg80211_deauth_request *req,
			    void *cookie)
1437
{
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	return ieee80211_mgd_deauth(IEEE80211_DEV_TO_SUB_IF(dev),
				    req, cookie);
1440 1441 1442
}

static int ieee80211_disassoc(struct wiphy *wiphy, struct net_device *dev,
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			      struct cfg80211_disassoc_request *req,
			      void *cookie)
1445
{
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	return ieee80211_mgd_disassoc(IEEE80211_DEV_TO_SUB_IF(dev),
				      req, cookie);
1448 1449
}

1450 1451 1452
static int ieee80211_join_ibss(struct wiphy *wiphy, struct net_device *dev,
			       struct cfg80211_ibss_params *params)
{
1453
	struct ieee80211_local *local = wiphy_priv(wiphy);
1454 1455
	struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);

1456 1457 1458 1459 1460 1461 1462 1463 1464 1465 1466 1467 1468
	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;
	}

1469 1470 1471 1472 1473 1474 1475 1476 1477 1478
	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);
}

1479 1480 1481
static int ieee80211_set_wiphy_params(struct wiphy *wiphy, u32 changed)
{
	struct ieee80211_local *local = wiphy_priv(wiphy);
1482
	int err;
1483

1484 1485 1486 1487 1488 1489 1490
	if (changed & WIPHY_PARAM_FRAG_THRESHOLD) {
		err = drv_set_frag_threshold(local, wiphy->frag_threshold);

		if (err)
			return err;
	}

1491 1492 1493 1494 1495 1496 1497
	if (changed & WIPHY_PARAM_COVERAGE_CLASS) {
		err = drv_set_coverage_class(local, wiphy->coverage_class);

		if (err)
			return err;
	}

1498
	if (changed & WIPHY_PARAM_RTS_THRESHOLD) {
1499
		err = drv_set_rts_threshold(local, wiphy->rts_threshold);
1500

1501 1502
		if (err)
			return err;
1503 1504 1505 1506 1507 1508 1509 1510 1511 1512 1513 1514 1515
	}

	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;
}

1516
static int ieee80211_set_tx_power(struct wiphy *wiphy,
1517
				  enum nl80211_tx_power_setting type, int mbm)
1518 1519 1520 1521 1522 1523
{
	struct ieee80211_local *local = wiphy_priv(wiphy);
	struct ieee80211_channel *chan = local->hw.conf.channel;
	u32 changes = 0;

	switch (type) {
1524
	case NL80211_TX_POWER_AUTOMATIC:
1525 1526
		local->user_power_level = -1;
		break;
1527 1528 1529 1530
	case NL80211_TX_POWER_LIMITED:
		if (mbm < 0 || (mbm % 100))
			return -EOPNOTSUPP;
		local->user_power_level = MBM_TO_DBM(mbm);
1531
		break;
1532 1533 1534
	case NL80211_TX_POWER_FIXED:
		if (mbm < 0 || (mbm % 100))
			return -EOPNOTSUPP;
1535
		/* TODO: move to cfg80211 when it knows the channel */
1536
		if (MBM_TO_DBM(mbm) > chan->max_power)
1537
			return -EINVAL;
1538
		local->user_power_level = MBM_TO_DBM(mbm);
1539 1540 1541 1542 1543 1544 1545 1546 1547 1548 1549 1550 1551 1552 1553 1554 1555
		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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				  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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static void ieee80211_rfkill_poll(struct wiphy *wiphy)
{
	struct ieee80211_local *local = wiphy_priv(wiphy);

	drv_rfkill_poll(local);
}

1573
#ifdef CONFIG_NL80211_TESTMODE
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static int ieee80211_testmode_cmd(struct wiphy *wiphy, void *data, int len)
1575 1576 1577 1578 1579 1580 1581 1582
{
	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
1583 1584 1585 1586 1587 1588 1589 1590 1591 1592 1593 1594 1595

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);
}
1596 1597
#endif

1598 1599 1600 1601 1602 1603 1604
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;

1605 1606
	lockdep_assert_held(&sdata->u.mgd.mtx);

1607 1608 1609 1610 1611 1612 1613 1614 1615 1616 1617 1618
	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 ||
1619
	    sdata->vif.bss_conf.channel_type == NL80211_CHAN_NO_HT) {
1620
		mutex_lock(&sdata->local->iflist_mtx);
1621
		ieee80211_recalc_smps(sdata->local);
1622 1623 1624 1625
		mutex_unlock(&sdata->local->iflist_mtx);
		return 0;
	}

1626
	ap = sdata->u.mgd.associated->bssid;
1627 1628 1629 1630 1631 1632 1633 1634 1635 1636 1637 1638 1639 1640 1641 1642 1643

	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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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);

1650 1651 1652
	if (sdata->vif.type != NL80211_IFTYPE_STATION)
		return -EOPNOTSUPP;

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1653 1654 1655 1656
	if (!(local->hw.flags & IEEE80211_HW_SUPPORTS_PS))
		return -EOPNOTSUPP;

	if (enabled == sdata->u.mgd.powersave &&
1657
	    timeout == local->dynamic_ps_forced_timeout)
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Johannes Berg 已提交
1658 1659 1660
		return 0;

	sdata->u.mgd.powersave = enabled;
1661
	local->dynamic_ps_forced_timeout = timeout;
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1662

1663 1664 1665 1666 1667
	/* 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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	if (local->hw.flags & IEEE80211_HW_SUPPORTS_DYNAMIC_PS)
		ieee80211_hw_config(local, IEEE80211_CONF_CHANGE_PS);

	ieee80211_recalc_ps(local, -1);

	return 0;
}

1676 1677 1678 1679 1680 1681 1682 1683 1684 1685 1686 1687 1688 1689 1690 1691
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;

1692 1693 1694 1695 1696 1697
	if (!(local->hw.flags & IEEE80211_HW_SUPPORTS_CQM_RSSI)) {
		if (sdata->vif.type != NL80211_IFTYPE_STATION)
			return -EOPNOTSUPP;
		return 0;
	}

1698 1699 1700 1701 1702 1703 1704
	/* 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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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);
1712
	int i, ret;
1713

1714 1715 1716 1717 1718
	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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1719

1720 1721
	for (i = 0; i < IEEE80211_NUM_BANDS; i++)
		sdata->rc_rateidx_mask[i] = mask->control[i].legacy;
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1722

1723
	return 0;
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1724 1725
}

1726 1727 1728 1729 1730 1731 1732 1733 1734 1735 1736 1737 1738 1739 1740 1741 1742 1743 1744 1745 1746 1747 1748 1749 1750 1751 1752 1753 1754 1755 1756
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;
}

1757 1758 1759 1760 1761 1762 1763 1764
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);
1765 1766 1767 1768 1769 1770 1771 1772 1773
	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);
1774
		local->hw_roc_for_tx = false;
1775 1776 1777 1778
		mutex_unlock(&local->mtx);

		return ret;
	}
1779 1780 1781 1782 1783

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

1784 1785 1786 1787 1788 1789 1790 1791 1792 1793 1794 1795 1796 1797 1798 1799 1800 1801 1802 1803 1804 1805
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;
}

1806 1807 1808 1809 1810
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);
1811 1812 1813 1814 1815 1816 1817 1818 1819 1820 1821
	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;
	}
1822 1823 1824 1825

	return ieee80211_wk_cancel_remain_on_channel(sdata, cookie);
}

1826 1827 1828 1829 1830 1831 1832 1833 1834 1835 1836 1837 1838 1839 1840 1841 1842 1843 1844 1845 1846 1847
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;
}

1848
static int ieee80211_mgmt_tx(struct wiphy *wiphy, struct net_device *dev,
1849
			     struct ieee80211_channel *chan, bool offchan,
1850
			     enum nl80211_channel_type channel_type,
1851
			     bool channel_type_valid, unsigned int wait,
1852
			     const u8 *buf, size_t len, u64 *cookie)
1853
{
1854 1855 1856 1857
	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;
1858
	struct ieee80211_work *wk;
1859 1860 1861
	const struct ieee80211_mgmt *mgmt = (void *)buf;
	u32 flags = IEEE80211_TX_INTFL_NL80211_FRAME_TX |
		    IEEE80211_TX_CTL_REQ_TX_STATUS;
1862
	bool is_offchan = false;
1863

1864 1865 1866
	/* Check that we are on the requested channel for transmission */
	if (chan != local->tmp_channel &&
	    chan != local->oper_channel)
1867
		is_offchan = true;
1868 1869 1870
	if (channel_type_valid &&
	    (channel_type != local->tmp_channel_type &&
	     channel_type != local->_oper_channel_type))
1871 1872
		is_offchan = true;

1873 1874 1875 1876 1877 1878
	if (chan == local->hw_roc_channel) {
		/* TODO: check channel type? */
		is_offchan = false;
		flags |= IEEE80211_TX_CTL_TX_OFFCHAN;
	}

1879
	if (is_offchan && !offchan)
1880 1881 1882 1883
		return -EBUSY;

	switch (sdata->vif.type) {
	case NL80211_IFTYPE_ADHOC:
1884 1885 1886
	case NL80211_IFTYPE_AP:
	case NL80211_IFTYPE_AP_VLAN:
	case NL80211_IFTYPE_P2P_GO:
1887
	case NL80211_IFTYPE_MESH_POINT:
1888 1889
		if (!ieee80211_is_action(mgmt->frame_control) ||
		    mgmt->u.action.category == WLAN_CATEGORY_PUBLIC)
1890 1891 1892 1893 1894 1895 1896 1897
			break;
		rcu_read_lock();
		sta = sta_info_get(sdata, mgmt->da);
		rcu_read_unlock();
		if (!sta)
			return -ENOLINK;
		break;
	case NL80211_IFTYPE_STATION:
1898
	case NL80211_IFTYPE_P2P_CLIENT:
1899 1900 1901 1902 1903 1904 1905 1906 1907 1908 1909 1910 1911 1912 1913 1914 1915
		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;
1916

1917 1918 1919 1920 1921 1922 1923 1924 1925 1926 1927 1928 1929 1930 1931 1932 1933 1934 1935 1936 1937 1938 1939 1940 1941 1942 1943 1944 1945 1946 1947 1948 1949 1950 1951 1952 1953 1954
	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;
1955
		local->hw_roc_skb_for_status = skb;
1956 1957 1958 1959 1960
		mutex_unlock(&local->mtx);

		return 0;
	}

1961 1962 1963 1964 1965 1966 1967 1968 1969 1970 1971 1972 1973 1974 1975 1976 1977 1978 1979
	/*
	 * 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;
1980
	wk->chan_type = channel_type;
1981 1982 1983 1984 1985 1986 1987 1988
	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);
1989
	return 0;
1990 1991
}

1992 1993 1994 1995 1996 1997 1998 1999 2000 2001
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);
2002 2003 2004 2005 2006 2007 2008 2009

	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;
2010
			local->hw_roc_skb_for_status = NULL;
2011 2012 2013 2014 2015 2016 2017
		}

		mutex_unlock(&local->mtx);

		return ret;
	}

2018 2019 2020 2021 2022 2023 2024 2025 2026 2027 2028 2029 2030 2031 2032 2033 2034 2035 2036 2037 2038
	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;
}

2039 2040 2041 2042 2043 2044 2045 2046 2047 2048 2049 2050 2051 2052 2053 2054 2055
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);
}

2056 2057 2058 2059 2060 2061 2062 2063 2064 2065 2066 2067 2068 2069 2070 2071 2072
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);
}

2073 2074 2075 2076 2077 2078 2079 2080 2081 2082 2083 2084 2085 2086 2087
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);
}

2088 2089 2090 2091 2092 2093 2094 2095 2096 2097 2098 2099 2100 2101 2102
static int ieee80211_set_rekey_data(struct wiphy *wiphy,
				    struct net_device *dev,
				    struct cfg80211_gtk_rekey_data *data)
{
	struct ieee80211_local *local = wiphy_priv(wiphy);
	struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);

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

	drv_set_rekey_data(local, sdata, data);

	return 0;
}

2103 2104 2105
struct cfg80211_ops mac80211_config_ops = {
	.add_virtual_intf = ieee80211_add_iface,
	.del_virtual_intf = ieee80211_del_iface,
2106
	.change_virtual_intf = ieee80211_change_iface,
2107 2108
	.add_key = ieee80211_add_key,
	.del_key = ieee80211_del_key,
2109
	.get_key = ieee80211_get_key,
2110
	.set_default_key = ieee80211_config_default_key,
2111
	.set_default_mgmt_key = ieee80211_config_default_mgmt_key,
2112 2113 2114
	.add_beacon = ieee80211_add_beacon,
	.set_beacon = ieee80211_set_beacon,
	.del_beacon = ieee80211_del_beacon,
2115 2116 2117
	.add_station = ieee80211_add_station,
	.del_station = ieee80211_del_station,
	.change_station = ieee80211_change_station,
2118
	.get_station = ieee80211_get_station,
2119
	.dump_station = ieee80211_dump_station,
2120
	.dump_survey = ieee80211_dump_survey,
2121 2122 2123 2124 2125 2126
#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,
2127 2128
	.update_mesh_config = ieee80211_update_mesh_config,
	.get_mesh_config = ieee80211_get_mesh_config,
2129 2130
	.join_mesh = ieee80211_join_mesh,
	.leave_mesh = ieee80211_leave_mesh,
2131
#endif
2132
	.change_bss = ieee80211_change_bss,
2133
	.set_txq_params = ieee80211_set_txq_params,
2134
	.set_channel = ieee80211_set_channel,
2135 2136
	.suspend = ieee80211_suspend,
	.resume = ieee80211_resume,
2137
	.scan = ieee80211_scan,
2138 2139
	.sched_scan_start = ieee80211_sched_scan_start,
	.sched_scan_stop = ieee80211_sched_scan_stop,
2140 2141 2142 2143
	.auth = ieee80211_auth,
	.assoc = ieee80211_assoc,
	.deauth = ieee80211_deauth,
	.disassoc = ieee80211_disassoc,
2144 2145
	.join_ibss = ieee80211_join_ibss,
	.leave_ibss = ieee80211_leave_ibss,
2146
	.set_wiphy_params = ieee80211_set_wiphy_params,
2147 2148
	.set_tx_power = ieee80211_set_tx_power,
	.get_tx_power = ieee80211_get_tx_power,
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2149
	.set_wds_peer = ieee80211_set_wds_peer,
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2150
	.rfkill_poll = ieee80211_rfkill_poll,
2151
	CFG80211_TESTMODE_CMD(ieee80211_testmode_cmd)
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2152
	CFG80211_TESTMODE_DUMP(ieee80211_testmode_dump)
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2153
	.set_power_mgmt = ieee80211_set_power_mgmt,
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2154
	.set_bitrate_mask = ieee80211_set_bitrate_mask,
2155 2156
	.remain_on_channel = ieee80211_remain_on_channel,
	.cancel_remain_on_channel = ieee80211_cancel_remain_on_channel,
2157
	.mgmt_tx = ieee80211_mgmt_tx,
2158
	.mgmt_tx_cancel_wait = ieee80211_mgmt_tx_cancel_wait,
2159
	.set_cqm_rssi_config = ieee80211_set_cqm_rssi_config,
2160
	.mgmt_frame_register = ieee80211_mgmt_frame_register,
2161 2162
	.set_antenna = ieee80211_set_antenna,
	.get_antenna = ieee80211_get_antenna,
2163 2164
	.set_ringparam = ieee80211_set_ringparam,
	.get_ringparam = ieee80211_get_ringparam,
2165
	.set_rekey_data = ieee80211_set_rekey_data,
2166
};