cfg.c 81.6 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 <linux/if_ether.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 wireless_dev *ieee80211_add_iface(struct wiphy *wiphy,
						const char *name,
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						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 wireless_dev *wdev;
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	struct ieee80211_sub_if_data *sdata;
	int err;
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	err = ieee80211_if_add(local, name, &wdev, type, params);
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	if (err)
		return ERR_PTR(err);
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	if (type == NL80211_IFTYPE_MONITOR && flags) {
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		sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
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		sdata->u.mntr_flags = *flags;
	}

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	return wdev;
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}

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static int ieee80211_del_iface(struct wiphy *wiphy, struct wireless_dev *wdev)
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{
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	ieee80211_if_remove(IEEE80211_WDEV_TO_SUB_IF(wdev));
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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)
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		RCU_INIT_POINTER(sdata->u.vlan.sta, NULL);
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	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_start_p2p_device(struct wiphy *wiphy,
				      struct wireless_dev *wdev)
{
	return ieee80211_do_open(wdev, true);
}

static void ieee80211_stop_p2p_device(struct wiphy *wiphy,
				      struct wireless_dev *wdev)
{
	ieee80211_sdata_stop(IEEE80211_WDEV_TO_SUB_IF(wdev));
}

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static int ieee80211_set_noack_map(struct wiphy *wiphy,
				  struct net_device *dev,
				  u16 noack_map)
{
	struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);

	sdata->noack_map = noack_map;
	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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	switch (sdata->vif.type) {
	case NL80211_IFTYPE_STATION:
		if (sdata->u.mgd.mfp != IEEE80211_MFP_DISABLED)
			key->conf.flags |= IEEE80211_KEY_FLAG_RX_MGMT;
		break;
	case NL80211_IFTYPE_AP:
	case NL80211_IFTYPE_AP_VLAN:
		/* Keys without a station are used for TX only */
		if (key->sta && test_sta_flag(key->sta, WLAN_STA_MFP))
			key->conf.flags |= IEEE80211_KEY_FLAG_RX_MGMT;
		break;
	case NL80211_IFTYPE_ADHOC:
		/* no MFP (yet) */
		break;
	case NL80211_IFTYPE_MESH_POINT:
#ifdef CONFIG_MAC80211_MESH
		if (sdata->u.mesh.security != IEEE80211_MESH_SEC_NONE)
			key->conf.flags |= IEEE80211_KEY_FLAG_RX_MGMT;
		break;
#endif
	case NL80211_IFTYPE_WDS:
	case NL80211_IFTYPE_MONITOR:
	case NL80211_IFTYPE_P2P_DEVICE:
	case NL80211_IFTYPE_UNSPECIFIED:
	case NUM_NL80211_IFTYPES:
	case NL80211_IFTYPE_P2P_CLIENT:
	case NL80211_IFTYPE_P2P_GO:
		/* shouldn't happen */
		WARN_ON_ONCE(1);
		break;
	}

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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[
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				sta->local->oper_channel->band];
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		rate->legacy = sband->bitrates[idx].bitrate;
	} else
		rate->mcs = idx;
}

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void sta_set_rate_info_tx(struct sta_info *sta,
			  const struct ieee80211_tx_rate *rate,
			  struct rate_info *rinfo)
{
	rinfo->flags = 0;
	if (rate->flags & IEEE80211_TX_RC_MCS)
		rinfo->flags |= RATE_INFO_FLAGS_MCS;
	if (rate->flags & IEEE80211_TX_RC_40_MHZ_WIDTH)
		rinfo->flags |= RATE_INFO_FLAGS_40_MHZ_WIDTH;
	if (rate->flags & IEEE80211_TX_RC_SHORT_GI)
		rinfo->flags |= RATE_INFO_FLAGS_SHORT_GI;
	rate_idx_to_bitrate(rinfo, sta, rate->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 ieee80211_local *local = sdata->local;
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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 |
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			STATION_INFO_CONNECTED_TIME |
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			STATION_INFO_STA_FLAGS |
			STATION_INFO_BEACON_LOSS_COUNT;
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	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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	sinfo->beacon_loss_count = sta->beacon_loss_count;
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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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		if (!local->ops->get_rssi ||
		    drv_get_rssi(local, sdata, &sta->sta, &sinfo->signal))
			sinfo->signal = (s8)sta->last_signal;
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		sinfo->signal_avg = (s8) -ewma_read(&sta->avg_signal);
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	}

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	sta_set_rate_info_tx(sta, &sta->last_tx_rate, &sinfo->txrate);
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	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;
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		if (test_sta_flag(sta, WLAN_STA_TOFFSET_KNOWN)) {
			sinfo->filled |= STATION_INFO_T_OFFSET;
			sinfo->t_offset = sta->t_offset;
		}
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#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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	sinfo->sta_flags.set = 0;
	sinfo->sta_flags.mask = BIT(NL80211_STA_FLAG_AUTHORIZED) |
				BIT(NL80211_STA_FLAG_SHORT_PREAMBLE) |
				BIT(NL80211_STA_FLAG_WME) |
				BIT(NL80211_STA_FLAG_MFP) |
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				BIT(NL80211_STA_FLAG_AUTHENTICATED) |
				BIT(NL80211_STA_FLAG_TDLS_PEER);
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	if (test_sta_flag(sta, WLAN_STA_AUTHORIZED))
		sinfo->sta_flags.set |= BIT(NL80211_STA_FLAG_AUTHORIZED);
	if (test_sta_flag(sta, WLAN_STA_SHORT_PREAMBLE))
		sinfo->sta_flags.set |= BIT(NL80211_STA_FLAG_SHORT_PREAMBLE);
	if (test_sta_flag(sta, WLAN_STA_WME))
		sinfo->sta_flags.set |= BIT(NL80211_STA_FLAG_WME);
	if (test_sta_flag(sta, WLAN_STA_MFP))
		sinfo->sta_flags.set |= BIT(NL80211_STA_FLAG_MFP);
	if (test_sta_flag(sta, WLAN_STA_AUTH))
		sinfo->sta_flags.set |= BIT(NL80211_STA_FLAG_AUTHENTICATED);
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	if (test_sta_flag(sta, WLAN_STA_TDLS_PEER))
		sinfo->sta_flags.set |= BIT(NL80211_STA_FLAG_TDLS_PEER);
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}

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static const char ieee80211_gstrings_sta_stats[][ETH_GSTRING_LEN] = {
	"rx_packets", "rx_bytes", "wep_weak_iv_count",
	"rx_duplicates", "rx_fragments", "rx_dropped",
	"tx_packets", "tx_bytes", "tx_fragments",
	"tx_filtered", "tx_retry_failed", "tx_retries",
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	"beacon_loss", "sta_state", "txrate", "rxrate", "signal",
	"channel", "noise", "ch_time", "ch_time_busy",
	"ch_time_ext_busy", "ch_time_rx", "ch_time_tx"
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};
#define STA_STATS_LEN	ARRAY_SIZE(ieee80211_gstrings_sta_stats)

static int ieee80211_get_et_sset_count(struct wiphy *wiphy,
				       struct net_device *dev,
				       int sset)
{
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	struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
	int rv = 0;

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	if (sset == ETH_SS_STATS)
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		rv += STA_STATS_LEN;

	rv += drv_get_et_sset_count(sdata, sset);
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	if (rv == 0)
		return -EOPNOTSUPP;
	return rv;
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}

static void ieee80211_get_et_stats(struct wiphy *wiphy,
				   struct net_device *dev,
				   struct ethtool_stats *stats,
				   u64 *data)
{
	struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
	struct sta_info *sta;
	struct ieee80211_local *local = sdata->local;
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	struct station_info sinfo;
	struct survey_info survey;
	int i, q;
#define STA_STATS_SURVEY_LEN 7
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	memset(data, 0, sizeof(u64) * STA_STATS_LEN);

#define ADD_STA_STATS(sta)				\
	do {						\
		data[i++] += sta->rx_packets;		\
		data[i++] += sta->rx_bytes;		\
		data[i++] += sta->wep_weak_iv_count;	\
		data[i++] += sta->num_duplicates;	\
		data[i++] += sta->rx_fragments;		\
		data[i++] += sta->rx_dropped;		\
							\
		data[i++] += sta->tx_packets;		\
		data[i++] += sta->tx_bytes;		\
		data[i++] += sta->tx_fragments;		\
		data[i++] += sta->tx_filtered_count;	\
		data[i++] += sta->tx_retry_failed;	\
		data[i++] += sta->tx_retry_count;	\
		data[i++] += sta->beacon_loss_count;	\
	} while (0)

	/* For Managed stations, find the single station based on BSSID
	 * and use that.  For interface types, iterate through all available
	 * stations and add stats for any station that is assigned to this
	 * network device.
	 */

568
	mutex_lock(&local->sta_mtx);
569 570 571

	if (sdata->vif.type == NL80211_IFTYPE_STATION) {
		sta = sta_info_get_bss(sdata, sdata->u.mgd.bssid);
572 573 574 575 576 577 578 579 580 581 582 583

		if (!(sta && !WARN_ON(sta->sdata->dev != dev)))
			goto do_survey;

		i = 0;
		ADD_STA_STATS(sta);

		data[i++] = sta->sta_state;

		sinfo.filled = 0;
		sta_set_sinfo(sta, &sinfo);

584
		if (sinfo.filled & STATION_INFO_TX_BITRATE)
585 586 587
			data[i] = 100000 *
				cfg80211_calculate_bitrate(&sinfo.txrate);
		i++;
588
		if (sinfo.filled & STATION_INFO_RX_BITRATE)
589 590 591 592
			data[i] = 100000 *
				cfg80211_calculate_bitrate(&sinfo.rxrate);
		i++;

593
		if (sinfo.filled & STATION_INFO_SIGNAL_AVG)
594 595
			data[i] = (u8)sinfo.signal_avg;
		i++;
596
	} else {
597
		list_for_each_entry(sta, &local->sta_list, list) {
598 599 600 601 602 603 604 605 606
			/* Make sure this station belongs to the proper dev */
			if (sta->sdata->dev != dev)
				continue;

			i = 0;
			ADD_STA_STATS(sta);
		}
	}

607 608 609 610 611 612 613 614 615 616 617 618 619 620 621 622 623 624 625 626 627 628 629 630 631 632 633 634 635 636 637 638 639 640 641 642 643 644 645 646 647 648 649 650 651 652 653
do_survey:
	i = STA_STATS_LEN - STA_STATS_SURVEY_LEN;
	/* Get survey stats for current channel */
	q = 0;
	while (true) {
		survey.filled = 0;
		if (drv_get_survey(local, q, &survey) != 0) {
			survey.filled = 0;
			break;
		}

		if (survey.channel &&
		    (local->oper_channel->center_freq ==
		     survey.channel->center_freq))
			break;
		q++;
	}

	if (survey.filled)
		data[i++] = survey.channel->center_freq;
	else
		data[i++] = 0;
	if (survey.filled & SURVEY_INFO_NOISE_DBM)
		data[i++] = (u8)survey.noise;
	else
		data[i++] = -1LL;
	if (survey.filled & SURVEY_INFO_CHANNEL_TIME)
		data[i++] = survey.channel_time;
	else
		data[i++] = -1LL;
	if (survey.filled & SURVEY_INFO_CHANNEL_TIME_BUSY)
		data[i++] = survey.channel_time_busy;
	else
		data[i++] = -1LL;
	if (survey.filled & SURVEY_INFO_CHANNEL_TIME_EXT_BUSY)
		data[i++] = survey.channel_time_ext_busy;
	else
		data[i++] = -1LL;
	if (survey.filled & SURVEY_INFO_CHANNEL_TIME_RX)
		data[i++] = survey.channel_time_rx;
	else
		data[i++] = -1LL;
	if (survey.filled & SURVEY_INFO_CHANNEL_TIME_TX)
		data[i++] = survey.channel_time_tx;
	else
		data[i++] = -1LL;

654
	mutex_unlock(&local->sta_mtx);
655

656 657 658
	if (WARN_ON(i != STA_STATS_LEN))
		return;

659
	drv_get_et_stats(sdata, stats, &(data[STA_STATS_LEN]));
660 661 662 663 664 665
}

static void ieee80211_get_et_strings(struct wiphy *wiphy,
				     struct net_device *dev,
				     u32 sset, u8 *data)
{
666 667 668
	struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
	int sz_sta_stats = 0;

669
	if (sset == ETH_SS_STATS) {
670
		sz_sta_stats = sizeof(ieee80211_gstrings_sta_stats);
671 672
		memcpy(data, *ieee80211_gstrings_sta_stats, sz_sta_stats);
	}
673
	drv_get_et_strings(sdata, sset, &(data[sz_sta_stats]));
674
}
675 676 677 678

static int ieee80211_dump_station(struct wiphy *wiphy, struct net_device *dev,
				 int idx, u8 *mac, struct station_info *sinfo)
{
679
	struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
680
	struct ieee80211_local *local = sdata->local;
681
	struct sta_info *sta;
682 683
	int ret = -ENOENT;

684
	mutex_lock(&local->sta_mtx);
685

686
	sta = sta_info_get_by_idx(sdata, idx);
687 688
	if (sta) {
		ret = 0;
689
		memcpy(mac, sta->sta.addr, ETH_ALEN);
690 691
		sta_set_sinfo(sta, sinfo);
	}
692

693
	mutex_unlock(&local->sta_mtx);
694

695
	return ret;
696 697
}

698 699 700 701 702 703 704 705
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);
}

706
static int ieee80211_get_station(struct wiphy *wiphy, struct net_device *dev,
707
				 u8 *mac, struct station_info *sinfo)
708
{
709
	struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
710
	struct ieee80211_local *local = sdata->local;
711
	struct sta_info *sta;
712
	int ret = -ENOENT;
713

714
	mutex_lock(&local->sta_mtx);
715

716
	sta = sta_info_get_bss(sdata, mac);
717 718 719 720 721
	if (sta) {
		ret = 0;
		sta_set_sinfo(sta, sinfo);
	}

722
	mutex_unlock(&local->sta_mtx);
723 724

	return ret;
725 726
}

727 728 729 730 731 732 733 734 735 736 737 738 739 740 741
static int ieee80211_set_channel(struct wiphy *wiphy,
				 struct net_device *netdev,
				 struct ieee80211_channel *chan,
				 enum nl80211_channel_type channel_type)
{
	struct ieee80211_local *local = wiphy_priv(wiphy);
	struct ieee80211_sub_if_data *sdata = NULL;

	if (netdev)
		sdata = IEEE80211_DEV_TO_SUB_IF(netdev);

	switch (ieee80211_get_channel_mode(local, NULL)) {
	case CHAN_MODE_HOPPING:
		return -EBUSY;
	case CHAN_MODE_FIXED:
742 743
		if (local->oper_channel != chan ||
		    (!sdata && local->_oper_channel_type != channel_type))
744 745 746 747 748 749 750 751 752 753 754 755 756 757 758 759 760 761 762
			return -EBUSY;
		if (!sdata && local->_oper_channel_type == channel_type)
			return 0;
		break;
	case CHAN_MODE_UNDEFINED:
		break;
	}

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

	local->oper_channel = chan;

	/* auto-detects changes */
	ieee80211_hw_config(local, 0);

	return 0;
}

763 764 765 766 767 768 769
static int ieee80211_set_monitor_channel(struct wiphy *wiphy,
					 struct ieee80211_channel *chan,
					 enum nl80211_channel_type channel_type)
{
	return ieee80211_set_channel(wiphy, NULL, chan, channel_type);
}

770
static int ieee80211_set_probe_resp(struct ieee80211_sub_if_data *sdata,
771
				    const u8 *resp, size_t resp_len)
772
{
773
	struct probe_resp *new, *old;
774 775

	if (!resp || !resp_len)
776
		return 1;
777

778
	old = rtnl_dereference(sdata->u.ap.probe_resp);
779

780
	new = kzalloc(sizeof(struct probe_resp) + resp_len, GFP_KERNEL);
781 782 783
	if (!new)
		return -ENOMEM;

784 785
	new->len = resp_len;
	memcpy(new->data, resp, resp_len);
786 787

	rcu_assign_pointer(sdata->u.ap.probe_resp, new);
788 789
	if (old)
		kfree_rcu(old, rcu_head);
790 791 792 793

	return 0;
}

794 795
static int ieee80211_assign_beacon(struct ieee80211_sub_if_data *sdata,
				   struct cfg80211_beacon_data *params)
796 797 798
{
	struct beacon_data *new, *old;
	int new_head_len, new_tail_len;
799 800
	int size, err;
	u32 changed = BSS_CHANGED_BEACON;
801

J
Johannes Berg 已提交
802
	old = rtnl_dereference(sdata->u.ap.beacon);
803 804 805

	/* Need to have a beacon head if we don't have one yet */
	if (!params->head && !old)
806
		return -EINVAL;
807 808 809 810 811 812 813 814 815 816 817 818 819 820 821 822 823 824 825 826 827 828 829 830 831 832 833 834 835 836 837 838 839 840 841 842 843 844 845 846 847 848 849 850

	/* 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 */

	/*
	 * 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);

851 852
	err = ieee80211_set_probe_resp(sdata, params->probe_resp,
				       params->probe_resp_len);
853 854 855
	if (err < 0)
		return err;
	if (err == 0)
856 857
		changed |= BSS_CHANGED_AP_PROBE_RESP;

858 859 860 861
	rcu_assign_pointer(sdata->u.ap.beacon, new);

	if (old)
		kfree_rcu(old, rcu_head);
862

863
	return changed;
864 865
}

866 867
static int ieee80211_start_ap(struct wiphy *wiphy, struct net_device *dev,
			      struct cfg80211_ap_settings *params)
868
{
869
	struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
870
	struct beacon_data *old;
871
	struct ieee80211_sub_if_data *vlan;
872 873 874 875 876
	u32 changed = BSS_CHANGED_BEACON_INT |
		      BSS_CHANGED_BEACON_ENABLED |
		      BSS_CHANGED_BEACON |
		      BSS_CHANGED_SSID;
	int err;
877

J
Johannes Berg 已提交
878
	old = rtnl_dereference(sdata->u.ap.beacon);
879 880 881
	if (old)
		return -EALREADY;

882 883 884 885 886
	err = ieee80211_set_channel(wiphy, dev, params->channel,
				    params->channel_type);
	if (err)
		return err;

887 888 889 890 891 892 893 894 895 896 897 898 899
	/*
	 * Apply control port protocol, this allows us to
	 * not encrypt dynamic WEP control frames.
	 */
	sdata->control_port_protocol = params->crypto.control_port_ethertype;
	sdata->control_port_no_encrypt = params->crypto.control_port_no_encrypt;
	list_for_each_entry(vlan, &sdata->u.ap.vlans, u.vlan.list) {
		vlan->control_port_protocol =
			params->crypto.control_port_ethertype;
		vlan->control_port_no_encrypt =
			params->crypto.control_port_no_encrypt;
	}

900 901 902 903 904 905 906 907 908 909 910 911 912 913 914 915 916
	sdata->vif.bss_conf.beacon_int = params->beacon_interval;
	sdata->vif.bss_conf.dtim_period = params->dtim_period;

	sdata->vif.bss_conf.ssid_len = params->ssid_len;
	if (params->ssid_len)
		memcpy(sdata->vif.bss_conf.ssid, params->ssid,
		       params->ssid_len);
	sdata->vif.bss_conf.hidden_ssid =
		(params->hidden_ssid != NL80211_HIDDEN_SSID_NOT_IN_USE);

	err = ieee80211_assign_beacon(sdata, &params->beacon);
	if (err < 0)
		return err;
	changed |= err;

	ieee80211_bss_info_change_notify(sdata, changed);

917 918 919 920
	netif_carrier_on(dev);
	list_for_each_entry(vlan, &sdata->u.ap.vlans, u.vlan.list)
		netif_carrier_on(vlan->dev);

921
	return 0;
922 923
}

924 925
static int ieee80211_change_beacon(struct wiphy *wiphy, struct net_device *dev,
				   struct cfg80211_beacon_data *params)
926
{
927
	struct ieee80211_sub_if_data *sdata;
928
	struct beacon_data *old;
929
	int err;
930

931 932
	sdata = IEEE80211_DEV_TO_SUB_IF(dev);

J
Johannes Berg 已提交
933
	old = rtnl_dereference(sdata->u.ap.beacon);
934 935 936
	if (!old)
		return -ENOENT;

937 938 939 940 941
	err = ieee80211_assign_beacon(sdata, params);
	if (err < 0)
		return err;
	ieee80211_bss_info_change_notify(sdata, err);
	return 0;
942 943
}

944
static int ieee80211_stop_ap(struct wiphy *wiphy, struct net_device *dev)
945
{
946
	struct ieee80211_sub_if_data *sdata, *vlan;
947 948
	struct beacon_data *old;

949 950
	sdata = IEEE80211_DEV_TO_SUB_IF(dev);

J
Johannes Berg 已提交
951
	old = rtnl_dereference(sdata->u.ap.beacon);
952 953 954
	if (!old)
		return -ENOENT;

955 956 957 958
	list_for_each_entry(vlan, &sdata->u.ap.vlans, u.vlan.list)
		netif_carrier_off(vlan->dev);
	netif_carrier_off(dev);

959
	RCU_INIT_POINTER(sdata->u.ap.beacon, NULL);
960 961

	kfree_rcu(old, rcu_head);
962

963
	sta_info_flush(sdata->local, sdata);
964
	ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_BEACON_ENABLED);
965

966
	return 0;
967 968
}

969 970 971 972 973 974 975 976 977
/* 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
978
} __packed;
979 980 981 982 983 984 985 986 987 988 989 990 991 992 993 994 995

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 */

J
Johannes Berg 已提交
996
	eth_broadcast_addr(msg->da);
997
	memcpy(msg->sa, sta->sta.addr, ETH_ALEN);
998 999 1000 1001 1002 1003 1004 1005 1006
	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) */

1007 1008
	skb->dev = sta->sdata->dev;
	skb->protocol = eth_type_trans(skb, sta->sdata->dev);
1009
	memset(skb->cb, 0, sizeof(skb->cb));
1010
	netif_rx_ni(skb);
1011 1012
}

1013 1014 1015
static int sta_apply_parameters(struct ieee80211_local *local,
				struct sta_info *sta,
				struct station_parameters *params)
1016
{
1017
	int ret = 0;
1018 1019
	u32 rates;
	int i, j;
1020
	struct ieee80211_supported_band *sband;
1021
	struct ieee80211_sub_if_data *sdata = sta->sdata;
1022
	u32 mask, set;
1023

J
Johannes Berg 已提交
1024 1025
	sband = local->hw.wiphy->bands[local->oper_channel->band];

1026 1027
	mask = params->sta_flags_mask;
	set = params->sta_flags_set;
J
Johannes Berg 已提交
1028

1029 1030 1031 1032 1033 1034 1035 1036 1037 1038 1039 1040
	/*
	 * In mesh mode, we can clear AUTHENTICATED flag but must
	 * also make ASSOCIATED follow appropriately for the driver
	 * API. See also below, after AUTHORIZED changes.
	 */
	if (mask & BIT(NL80211_STA_FLAG_AUTHENTICATED)) {
		/* cfg80211 should not allow this in non-mesh modes */
		if (WARN_ON(!ieee80211_vif_is_mesh(&sdata->vif)))
			return -EINVAL;

		if (set & BIT(NL80211_STA_FLAG_AUTHENTICATED) &&
		    !test_sta_flag(sta, WLAN_STA_AUTH)) {
1041
			ret = sta_info_move_state(sta, IEEE80211_STA_AUTH);
1042 1043
			if (ret)
				return ret;
1044
			ret = sta_info_move_state(sta, IEEE80211_STA_ASSOC);
1045 1046 1047 1048 1049
			if (ret)
				return ret;
		}
	}

1050 1051
	if (mask & BIT(NL80211_STA_FLAG_AUTHORIZED)) {
		if (set & BIT(NL80211_STA_FLAG_AUTHORIZED))
1052
			ret = sta_info_move_state(sta, IEEE80211_STA_AUTHORIZED);
1053
		else if (test_sta_flag(sta, WLAN_STA_AUTHORIZED))
1054
			ret = sta_info_move_state(sta, IEEE80211_STA_ASSOC);
1055 1056 1057 1058 1059 1060 1061 1062 1063 1064 1065
		if (ret)
			return ret;
	}

	if (mask & BIT(NL80211_STA_FLAG_AUTHENTICATED)) {
		/* cfg80211 should not allow this in non-mesh modes */
		if (WARN_ON(!ieee80211_vif_is_mesh(&sdata->vif)))
			return -EINVAL;

		if (!(set & BIT(NL80211_STA_FLAG_AUTHENTICATED)) &&
		    test_sta_flag(sta, WLAN_STA_AUTH)) {
1066
			ret = sta_info_move_state(sta, IEEE80211_STA_AUTH);
1067 1068
			if (ret)
				return ret;
1069
			ret = sta_info_move_state(sta, IEEE80211_STA_NONE);
1070 1071 1072
			if (ret)
				return ret;
		}
1073
	}
1074

1075

1076 1077
	if (mask & BIT(NL80211_STA_FLAG_SHORT_PREAMBLE)) {
		if (set & BIT(NL80211_STA_FLAG_SHORT_PREAMBLE))
J
Johannes Berg 已提交
1078 1079 1080
			set_sta_flag(sta, WLAN_STA_SHORT_PREAMBLE);
		else
			clear_sta_flag(sta, WLAN_STA_SHORT_PREAMBLE);
1081
	}
1082

1083
	if (mask & BIT(NL80211_STA_FLAG_WME)) {
1084
		if (set & BIT(NL80211_STA_FLAG_WME)) {
J
Johannes Berg 已提交
1085
			set_sta_flag(sta, WLAN_STA_WME);
1086
			sta->sta.wme = true;
J
Johannes Berg 已提交
1087 1088 1089
		} else {
			clear_sta_flag(sta, WLAN_STA_WME);
			sta->sta.wme = false;
1090
		}
1091
	}
1092

1093 1094
	if (mask & BIT(NL80211_STA_FLAG_MFP)) {
		if (set & BIT(NL80211_STA_FLAG_MFP))
J
Johannes Berg 已提交
1095 1096 1097
			set_sta_flag(sta, WLAN_STA_MFP);
		else
			clear_sta_flag(sta, WLAN_STA_MFP);
1098
	}
1099

1100 1101
	if (mask & BIT(NL80211_STA_FLAG_TDLS_PEER)) {
		if (set & BIT(NL80211_STA_FLAG_TDLS_PEER))
J
Johannes Berg 已提交
1102 1103 1104
			set_sta_flag(sta, WLAN_STA_TDLS_PEER);
		else
			clear_sta_flag(sta, WLAN_STA_TDLS_PEER);
1105
	}
1106

1107 1108 1109 1110
	if (params->sta_modify_mask & STATION_PARAM_APPLY_UAPSD) {
		sta->sta.uapsd_queues = params->uapsd_queues;
		sta->sta.max_sp = params->max_sp;
	}
1111

1112 1113 1114 1115 1116 1117 1118
	/*
	 * 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
1119 1120 1121 1122 1123 1124 1125
	/*
	 * 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.
	 */

1126 1127 1128 1129 1130
	if (params->listen_interval >= 0)
		sta->listen_interval = params->listen_interval;

	if (params->supported_rates) {
		rates = 0;
1131

1132 1133
		for (i = 0; i < params->supported_rates_len; i++) {
			int rate = (params->supported_rates[i] & 0x7f) * 5;
1134 1135
			for (j = 0; j < sband->n_bitrates; j++) {
				if (sband->bitrates[j].bitrate == rate)
1136 1137 1138
					rates |= BIT(j);
			}
		}
J
Johannes Berg 已提交
1139
		sta->sta.supp_rates[local->oper_channel->band] = rates;
1140
	}
1141

J
Johannes Berg 已提交
1142
	if (params->ht_capa)
B
Ben Greear 已提交
1143
		ieee80211_ht_cap_ie_to_sta_ht_cap(sdata, sband,
J
Johannes Berg 已提交
1144
						  params->ht_capa,
J
Johannes Berg 已提交
1145
						  &sta->sta.ht_cap);
1146

1147
	if (ieee80211_vif_is_mesh(&sdata->vif)) {
1148
#ifdef CONFIG_MAC80211_MESH
1149 1150
		if (sdata->u.mesh.security & IEEE80211_MESH_SEC_SECURED)
			switch (params->plink_state) {
1151 1152 1153
			case NL80211_PLINK_LISTEN:
			case NL80211_PLINK_ESTAB:
			case NL80211_PLINK_BLOCKED:
1154 1155 1156 1157 1158 1159 1160 1161 1162 1163 1164 1165 1166 1167 1168
				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;
			}
1169
#endif
J
Johannes Berg 已提交
1170
	}
1171 1172

	return 0;
1173 1174 1175 1176 1177
}

static int ieee80211_add_station(struct wiphy *wiphy, struct net_device *dev,
				 u8 *mac, struct station_parameters *params)
{
1178
	struct ieee80211_local *local = wiphy_priv(wiphy);
1179 1180
	struct sta_info *sta;
	struct ieee80211_sub_if_data *sdata;
J
Johannes Berg 已提交
1181
	int err;
1182
	int layer2_update;
1183 1184 1185 1186

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

1187 1188
		if (sdata->vif.type != NL80211_IFTYPE_AP_VLAN &&
		    sdata->vif.type != NL80211_IFTYPE_AP)
1189 1190 1191 1192
			return -EINVAL;
	} else
		sdata = IEEE80211_DEV_TO_SUB_IF(dev);

1193
	if (ether_addr_equal(mac, sdata->vif.addr))
1194 1195 1196 1197 1198 1199
		return -EINVAL;

	if (is_multicast_ether_addr(mac))
		return -EINVAL;

	sta = sta_info_alloc(sdata, mac, GFP_KERNEL);
J
Johannes Berg 已提交
1200 1201
	if (!sta)
		return -ENOMEM;
1202

1203 1204
	sta_info_pre_move_state(sta, IEEE80211_STA_AUTH);
	sta_info_pre_move_state(sta, IEEE80211_STA_ASSOC);
1205

1206 1207 1208 1209 1210
	err = sta_apply_parameters(local, sta, params);
	if (err) {
		sta_info_free(local, sta);
		return err;
	}
1211

1212 1213 1214 1215 1216 1217
	/*
	 * for TDLS, rate control should be initialized only when supported
	 * rates are known.
	 */
	if (!test_sta_flag(sta, WLAN_STA_TDLS_PEER))
		rate_control_rate_init(sta);
1218

1219 1220 1221
	layer2_update = sdata->vif.type == NL80211_IFTYPE_AP_VLAN ||
		sdata->vif.type == NL80211_IFTYPE_AP;

1222
	err = sta_info_insert_rcu(sta);
J
Johannes Berg 已提交
1223 1224 1225 1226 1227
	if (err) {
		rcu_read_unlock();
		return err;
	}

1228
	if (layer2_update)
J
Johannes Berg 已提交
1229 1230 1231 1232
		ieee80211_send_layer2_update(sta);

	rcu_read_unlock();

1233 1234 1235 1236 1237 1238
	return 0;
}

static int ieee80211_del_station(struct wiphy *wiphy, struct net_device *dev,
				 u8 *mac)
{
1239 1240
	struct ieee80211_local *local = wiphy_priv(wiphy);
	struct ieee80211_sub_if_data *sdata;
1241

1242 1243
	sdata = IEEE80211_DEV_TO_SUB_IF(dev);

1244 1245
	if (mac)
		return sta_info_destroy_addr_bss(sdata, mac);
1246

1247
	sta_info_flush(local, sdata);
1248 1249 1250 1251 1252 1253 1254 1255
	return 0;
}

static int ieee80211_change_station(struct wiphy *wiphy,
				    struct net_device *dev,
				    u8 *mac,
				    struct station_parameters *params)
{
1256
	struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1257
	struct ieee80211_local *local = wiphy_priv(wiphy);
1258 1259
	struct sta_info *sta;
	struct ieee80211_sub_if_data *vlansdata;
1260
	int err;
1261

1262
	mutex_lock(&local->sta_mtx);
J
Johannes Berg 已提交
1263

1264
	sta = sta_info_get_bss(sdata, mac);
J
Johannes Berg 已提交
1265
	if (!sta) {
1266
		mutex_unlock(&local->sta_mtx);
1267
		return -ENOENT;
J
Johannes Berg 已提交
1268
	}
1269

1270 1271 1272 1273
	/* in station mode, supported rates are only valid with TDLS */
	if (sdata->vif.type == NL80211_IFTYPE_STATION &&
	    params->supported_rates &&
	    !test_sta_flag(sta, WLAN_STA_TDLS_PEER)) {
1274
		mutex_unlock(&local->sta_mtx);
1275 1276 1277
		return -EINVAL;
	}

1278
	if (params->vlan && params->vlan != sta->sdata->dev) {
1279 1280 1281
		bool prev_4addr = false;
		bool new_4addr = false;

1282 1283
		vlansdata = IEEE80211_DEV_TO_SUB_IF(params->vlan);

1284 1285
		if (vlansdata->vif.type != NL80211_IFTYPE_AP_VLAN &&
		    vlansdata->vif.type != NL80211_IFTYPE_AP) {
1286
			mutex_unlock(&local->sta_mtx);
1287
			return -EINVAL;
J
Johannes Berg 已提交
1288
		}
1289

1290
		if (params->vlan->ieee80211_ptr->use_4addr) {
J
Johannes Berg 已提交
1291
			if (vlansdata->u.vlan.sta) {
1292
				mutex_unlock(&local->sta_mtx);
1293
				return -EBUSY;
J
Johannes Berg 已提交
1294
			}
1295

1296
			rcu_assign_pointer(vlansdata->u.vlan.sta, sta);
1297 1298 1299 1300 1301 1302 1303
			new_4addr = true;
		}

		if (sta->sdata->vif.type == NL80211_IFTYPE_AP_VLAN &&
		    sta->sdata->u.vlan.sta) {
			rcu_assign_pointer(sta->sdata->u.vlan.sta, NULL);
			prev_4addr = true;
1304 1305
		}

1306
		sta->sdata = vlansdata;
1307 1308 1309 1310 1311 1312 1313 1314 1315

		if (sta->sta_state == IEEE80211_STA_AUTHORIZED &&
		    prev_4addr != new_4addr) {
			if (new_4addr)
				atomic_dec(&sta->sdata->bss->num_mcast_sta);
			else
				atomic_inc(&sta->sdata->bss->num_mcast_sta);
		}

1316 1317 1318
		ieee80211_send_layer2_update(sta);
	}

1319 1320 1321 1322 1323
	err = sta_apply_parameters(local, sta, params);
	if (err) {
		mutex_unlock(&local->sta_mtx);
		return err;
	}
1324

1325 1326 1327
	if (test_sta_flag(sta, WLAN_STA_TDLS_PEER) && params->supported_rates)
		rate_control_rate_init(sta);

1328
	mutex_unlock(&local->sta_mtx);
J
Johannes Berg 已提交
1329

1330
	if (sdata->vif.type == NL80211_IFTYPE_STATION &&
E
Eliad Peller 已提交
1331
	    params->sta_flags_mask & BIT(NL80211_STA_FLAG_AUTHORIZED)) {
1332
		ieee80211_recalc_ps(local, -1);
E
Eliad Peller 已提交
1333 1334
		ieee80211_recalc_ps_vif(sdata);
	}
1335 1336 1337
	return 0;
}

1338 1339 1340 1341
#ifdef CONFIG_MAC80211_MESH
static int ieee80211_add_mpath(struct wiphy *wiphy, struct net_device *dev,
				 u8 *dst, u8 *next_hop)
{
1342
	struct ieee80211_sub_if_data *sdata;
1343 1344 1345 1346
	struct mesh_path *mpath;
	struct sta_info *sta;
	int err;

1347 1348
	sdata = IEEE80211_DEV_TO_SUB_IF(dev);

1349
	rcu_read_lock();
1350
	sta = sta_info_get(sdata, next_hop);
1351 1352
	if (!sta) {
		rcu_read_unlock();
1353
		return -ENOENT;
1354
	}
1355

1356
	err = mesh_path_add(dst, sdata);
1357 1358
	if (err) {
		rcu_read_unlock();
1359
		return err;
1360
	}
1361

1362
	mpath = mesh_path_lookup(dst, sdata);
1363 1364 1365 1366 1367
	if (!mpath) {
		rcu_read_unlock();
		return -ENXIO;
	}
	mesh_path_fix_nexthop(mpath, sta);
1368

1369 1370 1371 1372 1373 1374 1375
	rcu_read_unlock();
	return 0;
}

static int ieee80211_del_mpath(struct wiphy *wiphy, struct net_device *dev,
				 u8 *dst)
{
1376 1377
	struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);

1378
	if (dst)
1379
		return mesh_path_del(dst, sdata);
1380

1381
	mesh_path_flush_by_iface(sdata);
1382 1383 1384 1385 1386 1387 1388
	return 0;
}

static int ieee80211_change_mpath(struct wiphy *wiphy,
				    struct net_device *dev,
				    u8 *dst, u8 *next_hop)
{
1389
	struct ieee80211_sub_if_data *sdata;
1390 1391 1392
	struct mesh_path *mpath;
	struct sta_info *sta;

1393 1394
	sdata = IEEE80211_DEV_TO_SUB_IF(dev);

1395 1396
	rcu_read_lock();

1397
	sta = sta_info_get(sdata, next_hop);
1398 1399
	if (!sta) {
		rcu_read_unlock();
1400
		return -ENOENT;
1401
	}
1402

1403
	mpath = mesh_path_lookup(dst, sdata);
1404 1405 1406 1407 1408 1409
	if (!mpath) {
		rcu_read_unlock();
		return -ENOENT;
	}

	mesh_path_fix_nexthop(mpath, sta);
1410

1411 1412 1413 1414 1415 1416 1417
	rcu_read_unlock();
	return 0;
}

static void mpath_set_pinfo(struct mesh_path *mpath, u8 *next_hop,
			    struct mpath_info *pinfo)
{
J
Johannes Berg 已提交
1418 1419 1420 1421
	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);
1422 1423 1424
	else
		memset(next_hop, 0, ETH_ALEN);

1425 1426
	memset(pinfo, 0, sizeof(*pinfo));

1427 1428
	pinfo->generation = mesh_paths_generation;

1429
	pinfo->filled = MPATH_INFO_FRAME_QLEN |
1430
			MPATH_INFO_SN |
1431 1432 1433 1434 1435 1436 1437
			MPATH_INFO_METRIC |
			MPATH_INFO_EXPTIME |
			MPATH_INFO_DISCOVERY_TIMEOUT |
			MPATH_INFO_DISCOVERY_RETRIES |
			MPATH_INFO_FLAGS;

	pinfo->frame_qlen = mpath->frame_queue.qlen;
1438
	pinfo->sn = mpath->sn;
1439 1440 1441 1442 1443 1444 1445 1446 1447 1448
	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;
	if (mpath->flags & MESH_PATH_ACTIVE)
		pinfo->flags |= NL80211_MPATH_FLAG_ACTIVE;
	if (mpath->flags & MESH_PATH_RESOLVING)
		pinfo->flags |= NL80211_MPATH_FLAG_RESOLVING;
1449 1450
	if (mpath->flags & MESH_PATH_SN_VALID)
		pinfo->flags |= NL80211_MPATH_FLAG_SN_VALID;
1451 1452
	if (mpath->flags & MESH_PATH_FIXED)
		pinfo->flags |= NL80211_MPATH_FLAG_FIXED;
1453 1454
	if (mpath->flags & MESH_PATH_RESOLVED)
		pinfo->flags |= NL80211_MPATH_FLAG_RESOLVED;
1455 1456 1457 1458 1459 1460
}

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

{
1461
	struct ieee80211_sub_if_data *sdata;
1462 1463
	struct mesh_path *mpath;

1464 1465
	sdata = IEEE80211_DEV_TO_SUB_IF(dev);

1466
	rcu_read_lock();
1467
	mpath = mesh_path_lookup(dst, sdata);
1468 1469 1470 1471 1472 1473 1474 1475 1476 1477 1478 1479 1480 1481
	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)
{
1482
	struct ieee80211_sub_if_data *sdata;
1483 1484
	struct mesh_path *mpath;

1485 1486
	sdata = IEEE80211_DEV_TO_SUB_IF(dev);

1487
	rcu_read_lock();
1488
	mpath = mesh_path_lookup_by_idx(idx, sdata);
1489 1490 1491 1492 1493 1494 1495 1496 1497
	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;
}
1498

1499
static int ieee80211_get_mesh_config(struct wiphy *wiphy,
1500 1501 1502 1503 1504 1505 1506 1507 1508 1509 1510 1511 1512 1513 1514
				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;
}

1515 1516 1517 1518 1519
static int copy_mesh_setup(struct ieee80211_if_mesh *ifmsh,
		const struct mesh_setup *setup)
{
	u8 *new_ie;
	const u8 *old_ie;
1520 1521
	struct ieee80211_sub_if_data *sdata = container_of(ifmsh,
					struct ieee80211_sub_if_data, u.mesh);
1522

1523
	/* allocate information elements */
1524
	new_ie = NULL;
1525
	old_ie = ifmsh->ie;
1526

1527 1528
	if (setup->ie_len) {
		new_ie = kmemdup(setup->ie, setup->ie_len,
1529 1530 1531 1532
				GFP_KERNEL);
		if (!new_ie)
			return -ENOMEM;
	}
1533 1534 1535
	ifmsh->ie_len = setup->ie_len;
	ifmsh->ie = new_ie;
	kfree(old_ie);
1536 1537 1538 1539

	/* 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);
1540
	ifmsh->mesh_sp_id = setup->sync_method;
1541 1542
	ifmsh->mesh_pp_id = setup->path_sel_proto;
	ifmsh->mesh_pm_id = setup->path_metric;
1543 1544 1545 1546 1547
	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;
1548

1549 1550 1551 1552
	/* mcast rate setting in Mesh Node */
	memcpy(sdata->vif.bss_conf.mcast_rate, setup->mcast_rate,
						sizeof(setup->mcast_rate));

1553 1554 1555
	return 0;
}

1556
static int ieee80211_update_mesh_config(struct wiphy *wiphy,
1557 1558
					struct net_device *dev, u32 mask,
					const struct mesh_config *nconf)
1559 1560 1561
{
	struct mesh_config *conf;
	struct ieee80211_sub_if_data *sdata;
1562 1563
	struct ieee80211_if_mesh *ifmsh;

1564
	sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1565
	ifmsh = &sdata->u.mesh;
1566 1567 1568 1569 1570 1571 1572 1573 1574 1575 1576 1577 1578 1579 1580

	/* 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;
1581
	if (_chg_mesh_attr(NL80211_MESHCONF_ELEMENT_TTL, mask))
1582
		conf->element_ttl = nconf->element_ttl;
1583 1584
	if (_chg_mesh_attr(NL80211_MESHCONF_AUTO_OPEN_PLINKS, mask))
		conf->auto_open_plinks = nconf->auto_open_plinks;
1585 1586 1587
	if (_chg_mesh_attr(NL80211_MESHCONF_SYNC_OFFSET_MAX_NEIGHBOR, mask))
		conf->dot11MeshNbrOffsetMaxNeighbor =
			nconf->dot11MeshNbrOffsetMaxNeighbor;
1588 1589 1590 1591 1592 1593 1594 1595 1596 1597 1598 1599 1600
	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;
1601 1602 1603
	if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_PERR_MIN_INTERVAL, mask))
		conf->dot11MeshHWMPperrMinInterval =
			nconf->dot11MeshHWMPperrMinInterval;
1604 1605 1606 1607
	if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME,
			   mask))
		conf->dot11MeshHWMPnetDiameterTraversalTime =
			nconf->dot11MeshHWMPnetDiameterTraversalTime;
1608 1609 1610 1611
	if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_ROOTMODE, mask)) {
		conf->dot11MeshHWMPRootMode = nconf->dot11MeshHWMPRootMode;
		ieee80211_mesh_root_setup(ifmsh);
	}
1612
	if (_chg_mesh_attr(NL80211_MESHCONF_GATE_ANNOUNCEMENTS, mask)) {
T
Thomas Pedersen 已提交
1613 1614 1615 1616
		/* our current gate announcement implementation rides on root
		 * announcements, so require this ifmsh to also be a root node
		 * */
		if (nconf->dot11MeshGateAnnouncementProtocol &&
1617 1618
		    !(conf->dot11MeshHWMPRootMode > IEEE80211_ROOTMODE_ROOT)) {
			conf->dot11MeshHWMPRootMode = IEEE80211_PROACTIVE_RANN;
T
Thomas Pedersen 已提交
1619 1620
			ieee80211_mesh_root_setup(ifmsh);
		}
1621 1622 1623
		conf->dot11MeshGateAnnouncementProtocol =
			nconf->dot11MeshGateAnnouncementProtocol;
	}
1624
	if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_RANN_INTERVAL, mask))
1625 1626
		conf->dot11MeshHWMPRannInterval =
			nconf->dot11MeshHWMPRannInterval;
1627 1628
	if (_chg_mesh_attr(NL80211_MESHCONF_FORWARDING, mask))
		conf->dot11MeshForwarding = nconf->dot11MeshForwarding;
1629 1630 1631 1632 1633 1634 1635 1636
	if (_chg_mesh_attr(NL80211_MESHCONF_RSSI_THRESHOLD, mask)) {
		/* our RSSI threshold implementation is supported only for
		 * devices that report signal in dBm.
		 */
		if (!(sdata->local->hw.flags & IEEE80211_HW_SIGNAL_DBM))
			return -ENOTSUPP;
		conf->rssi_threshold = nconf->rssi_threshold;
	}
1637 1638 1639 1640 1641
	if (_chg_mesh_attr(NL80211_MESHCONF_HT_OPMODE, mask)) {
		conf->ht_opmode = nconf->ht_opmode;
		sdata->vif.bss_conf.ht_operation_mode = nconf->ht_opmode;
		ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_HT);
	}
1642 1643 1644 1645 1646 1647
	if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_PATH_TO_ROOT_TIMEOUT, mask))
		conf->dot11MeshHWMPactivePathToRootTimeout =
			nconf->dot11MeshHWMPactivePathToRootTimeout;
	if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_ROOT_INTERVAL, mask))
		conf->dot11MeshHWMProotInterval =
			nconf->dot11MeshHWMProotInterval;
1648 1649 1650
	if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_CONFIRMATION_INTERVAL, mask))
		conf->dot11MeshHWMPconfirmationInterval =
			nconf->dot11MeshHWMPconfirmationInterval;
1651 1652 1653
	return 0;
}

1654 1655 1656 1657 1658 1659
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;
1660
	int err;
1661

1662 1663 1664 1665
	memcpy(&ifmsh->mshcfg, conf, sizeof(struct mesh_config));
	err = copy_mesh_setup(ifmsh, setup);
	if (err)
		return err;
1666 1667 1668 1669 1670 1671

	err = ieee80211_set_channel(wiphy, dev, setup->channel,
				    setup->channel_type);
	if (err)
		return err;

1672 1673 1674 1675 1676 1677 1678 1679 1680 1681 1682 1683 1684
	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;
}
1685 1686
#endif

1687 1688 1689 1690 1691 1692 1693 1694 1695 1696
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) {
J
Johannes Berg 已提交
1697
		sdata->vif.bss_conf.use_cts_prot = params->use_cts_prot;
1698 1699 1700
		changed |= BSS_CHANGED_ERP_CTS_PROT;
	}
	if (params->use_short_preamble >= 0) {
J
Johannes Berg 已提交
1701
		sdata->vif.bss_conf.use_short_preamble =
1702 1703 1704
			params->use_short_preamble;
		changed |= BSS_CHANGED_ERP_PREAMBLE;
	}
1705 1706

	if (!sdata->vif.bss_conf.use_short_slot &&
1707
	    sdata->local->oper_channel->band == IEEE80211_BAND_5GHZ) {
1708 1709 1710 1711
		sdata->vif.bss_conf.use_short_slot = true;
		changed |= BSS_CHANGED_ERP_SLOT;
	}

1712
	if (params->use_short_slot_time >= 0) {
J
Johannes Berg 已提交
1713
		sdata->vif.bss_conf.use_short_slot =
1714 1715 1716 1717
			params->use_short_slot_time;
		changed |= BSS_CHANGED_ERP_SLOT;
	}

1718 1719 1720 1721 1722 1723 1724 1725 1726 1727 1728 1729 1730 1731 1732 1733 1734 1735
	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;
	}

1736 1737 1738 1739 1740 1741 1742
	if (params->ap_isolate >= 0) {
		if (params->ap_isolate)
			sdata->flags |= IEEE80211_SDATA_DONT_BRIDGE_PACKETS;
		else
			sdata->flags &= ~IEEE80211_SDATA_DONT_BRIDGE_PACKETS;
	}

1743 1744 1745 1746 1747 1748
	if (params->ht_opmode >= 0) {
		sdata->vif.bss_conf.ht_operation_mode =
			(u16) params->ht_opmode;
		changed |= BSS_CHANGED_HT;
	}

1749 1750 1751 1752 1753
	ieee80211_bss_info_change_notify(sdata, changed);

	return 0;
}

1754
static int ieee80211_set_txq_params(struct wiphy *wiphy,
1755
				    struct net_device *dev,
1756 1757 1758
				    struct ieee80211_txq_params *params)
{
	struct ieee80211_local *local = wiphy_priv(wiphy);
1759
	struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1760 1761 1762 1763 1764
	struct ieee80211_tx_queue_params p;

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

1765 1766 1767
	if (local->hw.queues < IEEE80211_NUM_ACS)
		return -EOPNOTSUPP;

1768 1769 1770 1771 1772
	memset(&p, 0, sizeof(p));
	p.aifs = params->aifs;
	p.cw_max = params->cwmax;
	p.cw_min = params->cwmin;
	p.txop = params->txop;
K
Kalle Valo 已提交
1773 1774 1775 1776 1777 1778 1779

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

1780 1781
	sdata->tx_conf[params->ac] = p;
	if (drv_conf_tx(local, sdata, params->ac, &p)) {
J
Joe Perches 已提交
1782
		wiphy_debug(local->hw.wiphy,
1783 1784
			    "failed to set TX queue parameters for AC %d\n",
			    params->ac);
1785 1786 1787
		return -EINVAL;
	}

1788 1789
	ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_QOS);

1790 1791 1792
	return 0;
}

1793
#ifdef CONFIG_PM
J
Johannes Berg 已提交
1794 1795
static int ieee80211_suspend(struct wiphy *wiphy,
			     struct cfg80211_wowlan *wowlan)
1796
{
1797
	return __ieee80211_suspend(wiphy_priv(wiphy), wowlan);
1798 1799 1800 1801 1802 1803 1804 1805 1806 1807 1808
}

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

1809 1810 1811
static int ieee80211_scan(struct wiphy *wiphy,
			  struct cfg80211_scan_request *req)
{
J
Johannes Berg 已提交
1812 1813 1814
	struct ieee80211_sub_if_data *sdata;

	sdata = IEEE80211_WDEV_TO_SUB_IF(req->wdev);
1815

1816 1817 1818 1819 1820
	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:
1821
	case NL80211_IFTYPE_P2P_DEVICE:
1822 1823 1824 1825
		break;
	case NL80211_IFTYPE_P2P_GO:
		if (sdata->local->ops->hw_scan)
			break;
1826 1827 1828 1829 1830
		/*
		 * FIXME: implement NoA while scanning in software,
		 * for now fall through to allow scanning only when
		 * beaconing hasn't been configured yet
		 */
1831 1832 1833 1834 1835 1836 1837
	case NL80211_IFTYPE_AP:
		if (sdata->u.ap.beacon)
			return -EOPNOTSUPP;
		break;
	default:
		return -EOPNOTSUPP;
	}
1838 1839 1840 1841

	return ieee80211_request_scan(sdata, req);
}

1842 1843 1844 1845 1846 1847 1848 1849 1850 1851 1852 1853 1854 1855
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
1856
ieee80211_sched_scan_stop(struct wiphy *wiphy, struct net_device *dev)
1857 1858 1859 1860 1861 1862
{
	struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);

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

1863
	return ieee80211_request_sched_scan_stop(sdata);
1864 1865
}

1866 1867 1868
static int ieee80211_auth(struct wiphy *wiphy, struct net_device *dev,
			  struct cfg80211_auth_request *req)
{
1869
	return ieee80211_mgd_auth(IEEE80211_DEV_TO_SUB_IF(dev), req);
1870 1871 1872 1873 1874
}

static int ieee80211_assoc(struct wiphy *wiphy, struct net_device *dev,
			   struct cfg80211_assoc_request *req)
{
1875 1876 1877 1878 1879 1880 1881 1882 1883 1884 1885 1886 1887 1888
	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;
	}

1889
	return ieee80211_mgd_assoc(IEEE80211_DEV_TO_SUB_IF(dev), req);
1890 1891 1892
}

static int ieee80211_deauth(struct wiphy *wiphy, struct net_device *dev,
1893
			    struct cfg80211_deauth_request *req)
1894
{
1895
	return ieee80211_mgd_deauth(IEEE80211_DEV_TO_SUB_IF(dev), req);
1896 1897 1898
}

static int ieee80211_disassoc(struct wiphy *wiphy, struct net_device *dev,
1899
			      struct cfg80211_disassoc_request *req)
1900
{
1901
	return ieee80211_mgd_disassoc(IEEE80211_DEV_TO_SUB_IF(dev), req);
1902 1903
}

1904 1905 1906
static int ieee80211_join_ibss(struct wiphy *wiphy, struct net_device *dev,
			       struct cfg80211_ibss_params *params)
{
1907
	struct ieee80211_local *local = wiphy_priv(wiphy);
1908 1909
	struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);

1910 1911 1912 1913 1914 1915 1916 1917 1918 1919 1920 1921 1922
	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;
	}

1923 1924 1925 1926 1927 1928 1929 1930 1931 1932
	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);
}

1933 1934 1935
static int ieee80211_set_wiphy_params(struct wiphy *wiphy, u32 changed)
{
	struct ieee80211_local *local = wiphy_priv(wiphy);
1936
	int err;
1937

1938 1939 1940 1941 1942 1943 1944
	if (changed & WIPHY_PARAM_FRAG_THRESHOLD) {
		err = drv_set_frag_threshold(local, wiphy->frag_threshold);

		if (err)
			return err;
	}

1945 1946 1947 1948 1949 1950 1951
	if (changed & WIPHY_PARAM_COVERAGE_CLASS) {
		err = drv_set_coverage_class(local, wiphy->coverage_class);

		if (err)
			return err;
	}

1952
	if (changed & WIPHY_PARAM_RTS_THRESHOLD) {
1953
		err = drv_set_rts_threshold(local, wiphy->rts_threshold);
1954

1955 1956
		if (err)
			return err;
1957 1958 1959 1960 1961 1962 1963 1964 1965 1966 1967 1968 1969
	}

	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;
}

1970
static int ieee80211_set_tx_power(struct wiphy *wiphy,
1971
				  enum nl80211_tx_power_setting type, int mbm)
1972 1973
{
	struct ieee80211_local *local = wiphy_priv(wiphy);
1974
	struct ieee80211_channel *chan = local->oper_channel;
1975 1976 1977
	u32 changes = 0;

	switch (type) {
1978
	case NL80211_TX_POWER_AUTOMATIC:
1979 1980
		local->user_power_level = -1;
		break;
1981 1982 1983 1984
	case NL80211_TX_POWER_LIMITED:
		if (mbm < 0 || (mbm % 100))
			return -EOPNOTSUPP;
		local->user_power_level = MBM_TO_DBM(mbm);
1985
		break;
1986 1987 1988
	case NL80211_TX_POWER_FIXED:
		if (mbm < 0 || (mbm % 100))
			return -EOPNOTSUPP;
1989
		/* TODO: move to cfg80211 when it knows the channel */
1990
		if (MBM_TO_DBM(mbm) > chan->max_power)
1991
			return -EINVAL;
1992
		local->user_power_level = MBM_TO_DBM(mbm);
1993 1994 1995 1996 1997 1998 1999 2000 2001 2002 2003 2004 2005 2006 2007 2008 2009
		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;
}

J
Johannes Berg 已提交
2010
static int ieee80211_set_wds_peer(struct wiphy *wiphy, struct net_device *dev,
J
Johannes Berg 已提交
2011
				  const u8 *addr)
J
Johannes Berg 已提交
2012 2013 2014 2015 2016 2017 2018 2019
{
	struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);

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

	return 0;
}

J
Johannes Berg 已提交
2020 2021 2022 2023 2024 2025 2026
static void ieee80211_rfkill_poll(struct wiphy *wiphy)
{
	struct ieee80211_local *local = wiphy_priv(wiphy);

	drv_rfkill_poll(local);
}

2027
#ifdef CONFIG_NL80211_TESTMODE
J
Johannes Berg 已提交
2028
static int ieee80211_testmode_cmd(struct wiphy *wiphy, void *data, int len)
2029 2030 2031 2032 2033 2034 2035 2036
{
	struct ieee80211_local *local = wiphy_priv(wiphy);

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

	return local->ops->testmode_cmd(&local->hw, data, len);
}
W
Wey-Yi Guy 已提交
2037 2038 2039 2040 2041 2042 2043 2044 2045 2046 2047 2048 2049

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);
}
2050 2051
#endif

2052 2053 2054 2055 2056 2057 2058
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;

2059 2060
	lockdep_assert_held(&sdata->u.mgd.mtx);

2061 2062 2063 2064 2065 2066 2067 2068 2069 2070 2071 2072
	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 ||
2073
	    sdata->vif.bss_conf.channel_type == NL80211_CHAN_NO_HT) {
2074
		ieee80211_recalc_smps(sdata->local);
2075 2076 2077
		return 0;
	}

2078
	ap = sdata->u.mgd.associated->bssid;
2079 2080 2081 2082 2083 2084 2085 2086 2087 2088 2089 2090 2091 2092 2093 2094 2095

	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;
}

J
Johannes Berg 已提交
2096 2097 2098 2099 2100 2101
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);

2102 2103 2104
	if (sdata->vif.type != NL80211_IFTYPE_STATION)
		return -EOPNOTSUPP;

J
Johannes Berg 已提交
2105 2106 2107 2108
	if (!(local->hw.flags & IEEE80211_HW_SUPPORTS_PS))
		return -EOPNOTSUPP;

	if (enabled == sdata->u.mgd.powersave &&
2109
	    timeout == local->dynamic_ps_forced_timeout)
J
Johannes Berg 已提交
2110 2111 2112
		return 0;

	sdata->u.mgd.powersave = enabled;
2113
	local->dynamic_ps_forced_timeout = timeout;
J
Johannes Berg 已提交
2114

2115 2116 2117 2118 2119
	/* 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);

J
Johannes Berg 已提交
2120 2121 2122 2123
	if (local->hw.flags & IEEE80211_HW_SUPPORTS_DYNAMIC_PS)
		ieee80211_hw_config(local, IEEE80211_CONF_CHANGE_PS);

	ieee80211_recalc_ps(local, -1);
E
Eliad Peller 已提交
2124
	ieee80211_recalc_ps_vif(sdata);
J
Johannes Berg 已提交
2125 2126 2127 2128

	return 0;
}

2129 2130 2131 2132 2133 2134 2135 2136 2137 2138 2139 2140 2141 2142 2143 2144
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_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;

	/* tell the driver upon association, unless already associated */
2145 2146
	if (sdata->u.mgd.associated &&
	    sdata->vif.driver_flags & IEEE80211_VIF_SUPPORTS_CQM_RSSI)
2147 2148 2149 2150 2151
		ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_CQM);

	return 0;
}

J
Johannes Berg 已提交
2152 2153 2154 2155 2156 2157 2158
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);
2159
	int i, ret;
2160

2161 2162 2163
	if (!ieee80211_sdata_running(sdata))
		return -ENETDOWN;

2164 2165 2166 2167 2168
	if (local->hw.flags & IEEE80211_HW_HAS_RATE_CONTROL) {
		ret = drv_set_bitrate_mask(local, sdata, mask);
		if (ret)
			return ret;
	}
J
Johannes Berg 已提交
2169

2170
	for (i = 0; i < IEEE80211_NUM_BANDS; i++) {
2171
		sdata->rc_rateidx_mask[i] = mask->control[i].legacy;
2172 2173 2174
		memcpy(sdata->rc_rateidx_mcs_mask[i], mask->control[i].mcs,
		       sizeof(mask->control[i].mcs));
	}
J
Johannes Berg 已提交
2175

2176
	return 0;
J
Johannes Berg 已提交
2177 2178
}

2179 2180 2181 2182 2183 2184 2185 2186 2187
static int ieee80211_start_roc_work(struct ieee80211_local *local,
				    struct ieee80211_sub_if_data *sdata,
				    struct ieee80211_channel *channel,
				    enum nl80211_channel_type channel_type,
				    unsigned int duration, u64 *cookie,
				    struct sk_buff *txskb)
{
	struct ieee80211_roc_work *roc, *tmp;
	bool queued = false;
2188 2189 2190 2191
	int ret;

	lockdep_assert_held(&local->mtx);

2192 2193 2194 2195 2196 2197 2198 2199 2200 2201 2202 2203 2204 2205 2206 2207 2208 2209 2210 2211 2212 2213 2214 2215 2216 2217 2218 2219 2220 2221 2222 2223 2224 2225 2226 2227 2228 2229 2230
	roc = kzalloc(sizeof(*roc), GFP_KERNEL);
	if (!roc)
		return -ENOMEM;

	roc->chan = channel;
	roc->chan_type = channel_type;
	roc->duration = duration;
	roc->req_duration = duration;
	roc->frame = txskb;
	roc->mgmt_tx_cookie = (unsigned long)txskb;
	roc->sdata = sdata;
	INIT_DELAYED_WORK(&roc->work, ieee80211_sw_roc_work);
	INIT_LIST_HEAD(&roc->dependents);

	/* if there's one pending or we're scanning, queue this one */
	if (!list_empty(&local->roc_list) || local->scanning)
		goto out_check_combine;

	/* if not HW assist, just queue & schedule work */
	if (!local->ops->remain_on_channel) {
		ieee80211_queue_delayed_work(&local->hw, &roc->work, 0);
		goto out_queue;
	}

	/* otherwise actually kick it off here (for error handling) */

	/*
	 * If the duration is zero, then the driver
	 * wouldn't actually do anything. Set it to
	 * 10 for now.
	 *
	 * TODO: cancel the off-channel operation
	 *       when we get the SKB's TX status and
	 *       the wait time was zero before.
	 */
	if (!duration)
		duration = 10;

	ret = drv_remain_on_channel(local, channel, channel_type, duration);
2231
	if (ret) {
2232 2233
		kfree(roc);
		return ret;
2234 2235
	}

2236 2237 2238 2239 2240 2241 2242 2243 2244 2245 2246 2247 2248 2249 2250 2251 2252 2253 2254 2255 2256 2257 2258 2259 2260 2261 2262 2263 2264 2265 2266 2267 2268 2269 2270 2271 2272 2273 2274 2275 2276 2277 2278 2279 2280 2281 2282 2283 2284 2285 2286 2287 2288 2289 2290 2291 2292 2293 2294 2295 2296 2297 2298 2299 2300 2301 2302 2303 2304 2305 2306 2307 2308 2309 2310 2311 2312 2313 2314 2315 2316 2317 2318 2319 2320 2321 2322 2323 2324 2325 2326 2327 2328 2329 2330 2331 2332 2333 2334 2335 2336 2337 2338 2339 2340 2341 2342 2343
	roc->started = true;
	goto out_queue;

 out_check_combine:
	list_for_each_entry(tmp, &local->roc_list, list) {
		if (tmp->chan != channel || tmp->chan_type != channel_type)
			continue;

		/*
		 * Extend this ROC if possible:
		 *
		 * If it hasn't started yet, just increase the duration
		 * and add the new one to the list of dependents.
		 */
		if (!tmp->started) {
			list_add_tail(&roc->list, &tmp->dependents);
			tmp->duration = max(tmp->duration, roc->duration);
			queued = true;
			break;
		}

		/* If it has already started, it's more difficult ... */
		if (local->ops->remain_on_channel) {
			unsigned long j = jiffies;

			/*
			 * In the offloaded ROC case, if it hasn't begun, add
			 * this new one to the dependent list to be handled
			 * when the the master one begins. If it has begun,
			 * check that there's still a minimum time left and
			 * if so, start this one, transmitting the frame, but
			 * add it to the list directly after this one with a
			 * a reduced time so we'll ask the driver to execute
			 * it right after finishing the previous one, in the
			 * hope that it'll also be executed right afterwards,
			 * effectively extending the old one.
			 * If there's no minimum time left, just add it to the
			 * normal list.
			 */
			if (!tmp->hw_begun) {
				list_add_tail(&roc->list, &tmp->dependents);
				queued = true;
				break;
			}

			if (time_before(j + IEEE80211_ROC_MIN_LEFT,
					tmp->hw_start_time +
					msecs_to_jiffies(tmp->duration))) {
				int new_dur;

				ieee80211_handle_roc_started(roc);

				new_dur = roc->duration -
					  jiffies_to_msecs(tmp->hw_start_time +
							   msecs_to_jiffies(
								tmp->duration) -
							   j);

				if (new_dur > 0) {
					/* add right after tmp */
					list_add(&roc->list, &tmp->list);
				} else {
					list_add_tail(&roc->list,
						      &tmp->dependents);
				}
				queued = true;
			}
		} else if (del_timer_sync(&tmp->work.timer)) {
			unsigned long new_end;

			/*
			 * In the software ROC case, cancel the timer, if
			 * that fails then the finish work is already
			 * queued/pending and thus we queue the new ROC
			 * normally, if that succeeds then we can extend
			 * the timer duration and TX the frame (if any.)
			 */

			list_add_tail(&roc->list, &tmp->dependents);
			queued = true;

			new_end = jiffies + msecs_to_jiffies(roc->duration);

			/* ok, it was started & we canceled timer */
			if (time_after(new_end, tmp->work.timer.expires))
				mod_timer(&tmp->work.timer, new_end);
			else
				add_timer(&tmp->work.timer);

			ieee80211_handle_roc_started(roc);
		}
		break;
	}

 out_queue:
	if (!queued)
		list_add_tail(&roc->list, &local->roc_list);

	/*
	 * cookie is either the roc (for normal roc)
	 * or the SKB (for mgmt TX)
	 */
	if (txskb)
		*cookie = (unsigned long)txskb;
	else
		*cookie = (unsigned long)roc;

	return 0;
2344 2345
}

2346
static int ieee80211_remain_on_channel(struct wiphy *wiphy,
2347
				       struct wireless_dev *wdev,
2348 2349 2350 2351 2352
				       struct ieee80211_channel *chan,
				       enum nl80211_channel_type channel_type,
				       unsigned int duration,
				       u64 *cookie)
{
2353
	struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
2354
	struct ieee80211_local *local = sdata->local;
2355
	int ret;
2356

2357 2358 2359 2360
	mutex_lock(&local->mtx);
	ret = ieee80211_start_roc_work(local, sdata, chan, channel_type,
				       duration, cookie, NULL);
	mutex_unlock(&local->mtx);
2361

2362
	return ret;
2363 2364
}

2365 2366
static int ieee80211_cancel_roc(struct ieee80211_local *local,
				u64 cookie, bool mgmt_tx)
2367
{
2368
	struct ieee80211_roc_work *roc, *tmp, *found = NULL;
2369 2370
	int ret;

2371 2372
	mutex_lock(&local->mtx);
	list_for_each_entry_safe(roc, tmp, &local->roc_list, list) {
2373 2374 2375 2376 2377 2378 2379 2380 2381 2382 2383 2384 2385 2386 2387
		struct ieee80211_roc_work *dep, *tmp2;

		list_for_each_entry_safe(dep, tmp2, &roc->dependents, list) {
			if (!mgmt_tx && (unsigned long)dep != cookie)
				continue;
			else if (mgmt_tx && dep->mgmt_tx_cookie != cookie)
				continue;
			/* found dependent item -- just remove it */
			list_del(&dep->list);
			mutex_unlock(&local->mtx);

			ieee80211_roc_notify_destroy(dep);
			return 0;
		}

2388 2389 2390 2391
		if (!mgmt_tx && (unsigned long)roc != cookie)
			continue;
		else if (mgmt_tx && roc->mgmt_tx_cookie != cookie)
			continue;
2392

2393 2394 2395
		found = roc;
		break;
	}
2396

2397 2398 2399 2400
	if (!found) {
		mutex_unlock(&local->mtx);
		return -ENOENT;
	}
2401

2402 2403 2404 2405 2406 2407 2408
	/*
	 * We found the item to cancel, so do that. Note that it
	 * may have dependents, which we also cancel (and send
	 * the expired signal for.) Not doing so would be quite
	 * tricky here, but we may need to fix it later.
	 */

2409 2410 2411 2412 2413 2414 2415 2416
	if (local->ops->remain_on_channel) {
		if (found->started) {
			ret = drv_cancel_remain_on_channel(local);
			if (WARN_ON_ONCE(ret)) {
				mutex_unlock(&local->mtx);
				return ret;
			}
		}
2417

2418
		list_del(&found->list);
2419

2420 2421
		if (found->started)
			ieee80211_start_next_roc(local);
2422
		mutex_unlock(&local->mtx);
2423

2424 2425 2426 2427 2428
		ieee80211_roc_notify_destroy(found);
	} else {
		/* work may be pending so use it all the time */
		found->abort = true;
		ieee80211_queue_delayed_work(&local->hw, &found->work, 0);
2429 2430 2431

		mutex_unlock(&local->mtx);

2432 2433
		/* work will clean up etc */
		flush_delayed_work(&found->work);
2434
	}
2435

2436
	return 0;
2437 2438
}

2439
static int ieee80211_cancel_remain_on_channel(struct wiphy *wiphy,
2440
					      struct wireless_dev *wdev,
2441
					      u64 cookie)
2442
{
2443
	struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
2444
	struct ieee80211_local *local = sdata->local;
2445

2446
	return ieee80211_cancel_roc(local, cookie, false);
2447 2448
}

2449
static int ieee80211_mgmt_tx(struct wiphy *wiphy, struct wireless_dev *wdev,
2450
			     struct ieee80211_channel *chan, bool offchan,
2451
			     enum nl80211_channel_type channel_type,
2452
			     bool channel_type_valid, unsigned int wait,
2453
			     const u8 *buf, size_t len, bool no_cck,
2454
			     bool dont_wait_for_ack, u64 *cookie)
2455
{
2456
	struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
2457 2458 2459 2460
	struct ieee80211_local *local = sdata->local;
	struct sk_buff *skb;
	struct sta_info *sta;
	const struct ieee80211_mgmt *mgmt = (void *)buf;
2461
	bool need_offchan = false;
2462
	u32 flags;
2463
	int ret;
2464

2465 2466 2467 2468 2469 2470
	if (dont_wait_for_ack)
		flags = IEEE80211_TX_CTL_NO_ACK;
	else
		flags = IEEE80211_TX_INTFL_NL80211_FRAME_TX |
			IEEE80211_TX_CTL_REQ_TX_STATUS;

2471 2472 2473
	if (no_cck)
		flags |= IEEE80211_TX_CTL_NO_CCK_RATE;

2474 2475
	switch (sdata->vif.type) {
	case NL80211_IFTYPE_ADHOC:
2476 2477 2478 2479 2480 2481 2482 2483 2484 2485
		if (!sdata->vif.bss_conf.ibss_joined)
			need_offchan = true;
		/* fall through */
#ifdef CONFIG_MAC80211_MESH
	case NL80211_IFTYPE_MESH_POINT:
		if (ieee80211_vif_is_mesh(&sdata->vif) &&
		    !sdata->u.mesh.mesh_id_len)
			need_offchan = true;
		/* fall through */
#endif
2486 2487 2488
	case NL80211_IFTYPE_AP:
	case NL80211_IFTYPE_AP_VLAN:
	case NL80211_IFTYPE_P2P_GO:
2489 2490 2491 2492
		if (sdata->vif.type != NL80211_IFTYPE_ADHOC &&
		    !ieee80211_vif_is_mesh(&sdata->vif) &&
		    !rcu_access_pointer(sdata->bss->beacon))
			need_offchan = true;
2493 2494
		if (!ieee80211_is_action(mgmt->frame_control) ||
		    mgmt->u.action.category == WLAN_CATEGORY_PUBLIC)
2495 2496 2497 2498 2499 2500 2501 2502
			break;
		rcu_read_lock();
		sta = sta_info_get(sdata, mgmt->da);
		rcu_read_unlock();
		if (!sta)
			return -ENOLINK;
		break;
	case NL80211_IFTYPE_STATION:
2503
	case NL80211_IFTYPE_P2P_CLIENT:
2504 2505
		if (!sdata->u.mgd.associated)
			need_offchan = true;
2506
		break;
2507 2508 2509
	case NL80211_IFTYPE_P2P_DEVICE:
		need_offchan = true;
		break;
2510 2511 2512 2513
	default:
		return -EOPNOTSUPP;
	}

2514 2515 2516 2517 2518 2519 2520 2521 2522 2523 2524 2525 2526 2527 2528
	mutex_lock(&local->mtx);

	/* Check if the operating channel is the requested channel */
	if (!need_offchan) {
		need_offchan = chan != local->oper_channel;
		if (channel_type_valid &&
		    channel_type != local->_oper_channel_type)
			need_offchan = true;
	}

	if (need_offchan && !offchan) {
		ret = -EBUSY;
		goto out_unlock;
	}

2529
	skb = dev_alloc_skb(local->hw.extra_tx_headroom + len);
2530 2531 2532 2533
	if (!skb) {
		ret = -ENOMEM;
		goto out_unlock;
	}
2534 2535 2536 2537 2538 2539 2540 2541
	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;

2542
	if (!need_offchan) {
2543
		*cookie = (unsigned long) skb;
2544
		ieee80211_tx_skb(sdata, skb);
2545 2546
		ret = 0;
		goto out_unlock;
2547 2548
	}

2549 2550 2551 2552
	IEEE80211_SKB_CB(skb)->flags |= IEEE80211_TX_CTL_TX_OFFCHAN;
	if (local->hw.flags & IEEE80211_HW_QUEUE_CONTROL)
		IEEE80211_SKB_CB(skb)->hw_queue =
			local->hw.offchannel_tx_hw_queue;
2553

2554 2555 2556 2557 2558 2559 2560 2561
	/* This will handle all kinds of coalescing and immediate TX */
	ret = ieee80211_start_roc_work(local, sdata, chan, channel_type,
				       wait, cookie, skb);
	if (ret)
		kfree_skb(skb);
 out_unlock:
	mutex_unlock(&local->mtx);
	return ret;
2562 2563
}

2564
static int ieee80211_mgmt_tx_cancel_wait(struct wiphy *wiphy,
2565
					 struct wireless_dev *wdev,
2566 2567
					 u64 cookie)
{
2568
	struct ieee80211_local *local = wiphy_priv(wiphy);
2569

2570
	return ieee80211_cancel_roc(local, cookie, true);
2571 2572
}

2573
static void ieee80211_mgmt_frame_register(struct wiphy *wiphy,
2574
					  struct wireless_dev *wdev,
2575 2576 2577
					  u16 frame_type, bool reg)
{
	struct ieee80211_local *local = wiphy_priv(wiphy);
2578
	struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
2579

2580 2581 2582 2583
	switch (frame_type) {
	case IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_AUTH:
		if (sdata->vif.type == NL80211_IFTYPE_ADHOC) {
			struct ieee80211_if_ibss *ifibss = &sdata->u.ibss;
2584

2585 2586 2587 2588 2589 2590 2591 2592 2593 2594 2595
			if (reg)
				ifibss->auth_frame_registrations++;
			else
				ifibss->auth_frame_registrations--;
		}
		break;
	case IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_PROBE_REQ:
		if (reg)
			local->probe_req_reg++;
		else
			local->probe_req_reg--;
2596

2597 2598 2599
		if (!local->open_count)
			break;

2600 2601 2602 2603 2604
		ieee80211_queue_work(&local->hw, &local->reconfig_filter);
		break;
	default:
		break;
	}
2605 2606
}

2607 2608 2609 2610 2611 2612 2613 2614 2615 2616 2617 2618 2619 2620 2621 2622 2623
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);
}

2624 2625 2626 2627 2628 2629 2630 2631 2632 2633 2634 2635 2636 2637 2638
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);
}

2639 2640 2641 2642 2643 2644 2645 2646 2647 2648 2649 2650 2651 2652 2653
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;
}

2654 2655 2656 2657 2658 2659 2660 2661 2662 2663 2664 2665 2666 2667 2668 2669 2670 2671 2672 2673 2674 2675 2676 2677 2678 2679 2680 2681 2682 2683 2684 2685 2686 2687 2688 2689 2690 2691 2692 2693 2694 2695 2696 2697 2698 2699 2700 2701 2702 2703 2704
static void ieee80211_tdls_add_ext_capab(struct sk_buff *skb)
{
	u8 *pos = (void *)skb_put(skb, 7);

	*pos++ = WLAN_EID_EXT_CAPABILITY;
	*pos++ = 5; /* len */
	*pos++ = 0x0;
	*pos++ = 0x0;
	*pos++ = 0x0;
	*pos++ = 0x0;
	*pos++ = WLAN_EXT_CAPA5_TDLS_ENABLED;
}

static u16 ieee80211_get_tdls_sta_capab(struct ieee80211_sub_if_data *sdata)
{
	struct ieee80211_local *local = sdata->local;
	u16 capab;

	capab = 0;
	if (local->oper_channel->band != IEEE80211_BAND_2GHZ)
		return capab;

	if (!(local->hw.flags & IEEE80211_HW_2GHZ_SHORT_SLOT_INCAPABLE))
		capab |= WLAN_CAPABILITY_SHORT_SLOT_TIME;
	if (!(local->hw.flags & IEEE80211_HW_2GHZ_SHORT_PREAMBLE_INCAPABLE))
		capab |= WLAN_CAPABILITY_SHORT_PREAMBLE;

	return capab;
}

static void ieee80211_tdls_add_link_ie(struct sk_buff *skb, u8 *src_addr,
				       u8 *peer, u8 *bssid)
{
	struct ieee80211_tdls_lnkie *lnkid;

	lnkid = (void *)skb_put(skb, sizeof(struct ieee80211_tdls_lnkie));

	lnkid->ie_type = WLAN_EID_LINK_ID;
	lnkid->ie_len = sizeof(struct ieee80211_tdls_lnkie) - 2;

	memcpy(lnkid->bssid, bssid, ETH_ALEN);
	memcpy(lnkid->init_sta, src_addr, ETH_ALEN);
	memcpy(lnkid->resp_sta, peer, ETH_ALEN);
}

static int
ieee80211_prep_tdls_encap_data(struct wiphy *wiphy, struct net_device *dev,
			       u8 *peer, u8 action_code, u8 dialog_token,
			       u16 status_code, struct sk_buff *skb)
{
	struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2705
	struct ieee80211_local *local = sdata->local;
2706 2707 2708 2709 2710 2711 2712 2713 2714 2715 2716 2717 2718 2719 2720 2721 2722 2723 2724
	struct ieee80211_tdls_data *tf;

	tf = (void *)skb_put(skb, offsetof(struct ieee80211_tdls_data, u));

	memcpy(tf->da, peer, ETH_ALEN);
	memcpy(tf->sa, sdata->vif.addr, ETH_ALEN);
	tf->ether_type = cpu_to_be16(ETH_P_TDLS);
	tf->payload_type = WLAN_TDLS_SNAP_RFTYPE;

	switch (action_code) {
	case WLAN_TDLS_SETUP_REQUEST:
		tf->category = WLAN_CATEGORY_TDLS;
		tf->action_code = WLAN_TDLS_SETUP_REQUEST;

		skb_put(skb, sizeof(tf->u.setup_req));
		tf->u.setup_req.dialog_token = dialog_token;
		tf->u.setup_req.capability =
			cpu_to_le16(ieee80211_get_tdls_sta_capab(sdata));

2725 2726 2727 2728
		ieee80211_add_srates_ie(sdata, skb, false,
					local->oper_channel->band);
		ieee80211_add_ext_srates_ie(sdata, skb, false,
					    local->oper_channel->band);
2729 2730 2731 2732 2733 2734 2735 2736 2737 2738 2739 2740
		ieee80211_tdls_add_ext_capab(skb);
		break;
	case WLAN_TDLS_SETUP_RESPONSE:
		tf->category = WLAN_CATEGORY_TDLS;
		tf->action_code = WLAN_TDLS_SETUP_RESPONSE;

		skb_put(skb, sizeof(tf->u.setup_resp));
		tf->u.setup_resp.status_code = cpu_to_le16(status_code);
		tf->u.setup_resp.dialog_token = dialog_token;
		tf->u.setup_resp.capability =
			cpu_to_le16(ieee80211_get_tdls_sta_capab(sdata));

2741 2742 2743 2744
		ieee80211_add_srates_ie(sdata, skb, false,
					local->oper_channel->band);
		ieee80211_add_ext_srates_ie(sdata, skb, false,
					    local->oper_channel->band);
2745 2746 2747 2748 2749 2750 2751 2752 2753 2754 2755 2756 2757 2758 2759 2760 2761 2762 2763 2764 2765 2766 2767 2768 2769 2770 2771 2772 2773 2774 2775 2776 2777 2778 2779 2780 2781
		ieee80211_tdls_add_ext_capab(skb);
		break;
	case WLAN_TDLS_SETUP_CONFIRM:
		tf->category = WLAN_CATEGORY_TDLS;
		tf->action_code = WLAN_TDLS_SETUP_CONFIRM;

		skb_put(skb, sizeof(tf->u.setup_cfm));
		tf->u.setup_cfm.status_code = cpu_to_le16(status_code);
		tf->u.setup_cfm.dialog_token = dialog_token;
		break;
	case WLAN_TDLS_TEARDOWN:
		tf->category = WLAN_CATEGORY_TDLS;
		tf->action_code = WLAN_TDLS_TEARDOWN;

		skb_put(skb, sizeof(tf->u.teardown));
		tf->u.teardown.reason_code = cpu_to_le16(status_code);
		break;
	case WLAN_TDLS_DISCOVERY_REQUEST:
		tf->category = WLAN_CATEGORY_TDLS;
		tf->action_code = WLAN_TDLS_DISCOVERY_REQUEST;

		skb_put(skb, sizeof(tf->u.discover_req));
		tf->u.discover_req.dialog_token = dialog_token;
		break;
	default:
		return -EINVAL;
	}

	return 0;
}

static int
ieee80211_prep_tdls_direct(struct wiphy *wiphy, struct net_device *dev,
			   u8 *peer, u8 action_code, u8 dialog_token,
			   u16 status_code, struct sk_buff *skb)
{
	struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2782
	struct ieee80211_local *local = sdata->local;
2783 2784 2785 2786 2787 2788 2789 2790 2791 2792 2793 2794 2795 2796 2797 2798 2799 2800 2801 2802 2803 2804
	struct ieee80211_mgmt *mgmt;

	mgmt = (void *)skb_put(skb, 24);
	memset(mgmt, 0, 24);
	memcpy(mgmt->da, peer, ETH_ALEN);
	memcpy(mgmt->sa, sdata->vif.addr, ETH_ALEN);
	memcpy(mgmt->bssid, sdata->u.mgd.bssid, ETH_ALEN);

	mgmt->frame_control = cpu_to_le16(IEEE80211_FTYPE_MGMT |
					  IEEE80211_STYPE_ACTION);

	switch (action_code) {
	case WLAN_PUB_ACTION_TDLS_DISCOVER_RES:
		skb_put(skb, 1 + sizeof(mgmt->u.action.u.tdls_discover_resp));
		mgmt->u.action.category = WLAN_CATEGORY_PUBLIC;
		mgmt->u.action.u.tdls_discover_resp.action_code =
			WLAN_PUB_ACTION_TDLS_DISCOVER_RES;
		mgmt->u.action.u.tdls_discover_resp.dialog_token =
			dialog_token;
		mgmt->u.action.u.tdls_discover_resp.capability =
			cpu_to_le16(ieee80211_get_tdls_sta_capab(sdata));

2805 2806 2807 2808
		ieee80211_add_srates_ie(sdata, skb, false,
					local->oper_channel->band);
		ieee80211_add_ext_srates_ie(sdata, skb, false,
					    local->oper_channel->band);
2809 2810 2811 2812 2813 2814 2815 2816 2817 2818 2819 2820 2821 2822 2823 2824 2825 2826 2827 2828 2829 2830 2831 2832 2833 2834 2835 2836 2837
		ieee80211_tdls_add_ext_capab(skb);
		break;
	default:
		return -EINVAL;
	}

	return 0;
}

static int ieee80211_tdls_mgmt(struct wiphy *wiphy, struct net_device *dev,
			       u8 *peer, u8 action_code, u8 dialog_token,
			       u16 status_code, const u8 *extra_ies,
			       size_t extra_ies_len)
{
	struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
	struct ieee80211_local *local = sdata->local;
	struct ieee80211_tx_info *info;
	struct sk_buff *skb = NULL;
	bool send_direct;
	int ret;

	if (!(wiphy->flags & WIPHY_FLAG_SUPPORTS_TDLS))
		return -ENOTSUPP;

	/* make sure we are in managed mode, and associated */
	if (sdata->vif.type != NL80211_IFTYPE_STATION ||
	    !sdata->u.mgd.associated)
		return -EINVAL;

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Johannes Berg 已提交
2838 2839
	tdls_dbg(sdata, "TDLS mgmt action %d peer %pM\n",
		 action_code, peer);
2840 2841 2842 2843 2844 2845 2846 2847 2848 2849 2850 2851 2852 2853 2854 2855 2856 2857 2858 2859 2860 2861 2862 2863 2864 2865 2866 2867 2868 2869 2870 2871 2872 2873 2874 2875 2876 2877 2878 2879 2880 2881 2882 2883 2884 2885 2886 2887 2888 2889 2890 2891 2892 2893 2894 2895 2896 2897 2898 2899 2900 2901 2902 2903 2904 2905 2906 2907 2908 2909 2910 2911 2912 2913 2914 2915 2916 2917 2918 2919 2920 2921 2922 2923 2924 2925 2926 2927 2928 2929 2930 2931 2932 2933 2934 2935 2936 2937 2938

	skb = dev_alloc_skb(local->hw.extra_tx_headroom +
			    max(sizeof(struct ieee80211_mgmt),
				sizeof(struct ieee80211_tdls_data)) +
			    50 + /* supported rates */
			    7 + /* ext capab */
			    extra_ies_len +
			    sizeof(struct ieee80211_tdls_lnkie));
	if (!skb)
		return -ENOMEM;

	info = IEEE80211_SKB_CB(skb);
	skb_reserve(skb, local->hw.extra_tx_headroom);

	switch (action_code) {
	case WLAN_TDLS_SETUP_REQUEST:
	case WLAN_TDLS_SETUP_RESPONSE:
	case WLAN_TDLS_SETUP_CONFIRM:
	case WLAN_TDLS_TEARDOWN:
	case WLAN_TDLS_DISCOVERY_REQUEST:
		ret = ieee80211_prep_tdls_encap_data(wiphy, dev, peer,
						     action_code, dialog_token,
						     status_code, skb);
		send_direct = false;
		break;
	case WLAN_PUB_ACTION_TDLS_DISCOVER_RES:
		ret = ieee80211_prep_tdls_direct(wiphy, dev, peer, action_code,
						 dialog_token, status_code,
						 skb);
		send_direct = true;
		break;
	default:
		ret = -ENOTSUPP;
		break;
	}

	if (ret < 0)
		goto fail;

	if (extra_ies_len)
		memcpy(skb_put(skb, extra_ies_len), extra_ies, extra_ies_len);

	/* the TDLS link IE is always added last */
	switch (action_code) {
	case WLAN_TDLS_SETUP_REQUEST:
	case WLAN_TDLS_SETUP_CONFIRM:
	case WLAN_TDLS_TEARDOWN:
	case WLAN_TDLS_DISCOVERY_REQUEST:
		/* we are the initiator */
		ieee80211_tdls_add_link_ie(skb, sdata->vif.addr, peer,
					   sdata->u.mgd.bssid);
		break;
	case WLAN_TDLS_SETUP_RESPONSE:
	case WLAN_PUB_ACTION_TDLS_DISCOVER_RES:
		/* we are the responder */
		ieee80211_tdls_add_link_ie(skb, peer, sdata->vif.addr,
					   sdata->u.mgd.bssid);
		break;
	default:
		ret = -ENOTSUPP;
		goto fail;
	}

	if (send_direct) {
		ieee80211_tx_skb(sdata, skb);
		return 0;
	}

	/*
	 * According to 802.11z: Setup req/resp are sent in AC_BK, otherwise
	 * we should default to AC_VI.
	 */
	switch (action_code) {
	case WLAN_TDLS_SETUP_REQUEST:
	case WLAN_TDLS_SETUP_RESPONSE:
		skb_set_queue_mapping(skb, IEEE80211_AC_BK);
		skb->priority = 2;
		break;
	default:
		skb_set_queue_mapping(skb, IEEE80211_AC_VI);
		skb->priority = 5;
		break;
	}

	/* disable bottom halves when entering the Tx path */
	local_bh_disable();
	ret = ieee80211_subif_start_xmit(skb, dev);
	local_bh_enable();

	return ret;

fail:
	dev_kfree_skb(skb);
	return ret;
}

static int ieee80211_tdls_oper(struct wiphy *wiphy, struct net_device *dev,
			       u8 *peer, enum nl80211_tdls_operation oper)
{
2939
	struct sta_info *sta;
2940 2941 2942 2943 2944 2945 2946 2947
	struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);

	if (!(wiphy->flags & WIPHY_FLAG_SUPPORTS_TDLS))
		return -ENOTSUPP;

	if (sdata->vif.type != NL80211_IFTYPE_STATION)
		return -EINVAL;

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2948
	tdls_dbg(sdata, "TDLS oper %d peer %pM\n", oper, peer);
2949 2950 2951

	switch (oper) {
	case NL80211_TDLS_ENABLE_LINK:
2952 2953 2954 2955 2956 2957 2958
		rcu_read_lock();
		sta = sta_info_get(sdata, peer);
		if (!sta) {
			rcu_read_unlock();
			return -ENOLINK;
		}

J
Johannes Berg 已提交
2959
		set_sta_flag(sta, WLAN_STA_TDLS_PEER_AUTH);
2960
		rcu_read_unlock();
2961 2962 2963 2964 2965 2966 2967 2968 2969 2970 2971 2972 2973 2974 2975
		break;
	case NL80211_TDLS_DISABLE_LINK:
		return sta_info_destroy_addr(sdata, peer);
	case NL80211_TDLS_TEARDOWN:
	case NL80211_TDLS_SETUP:
	case NL80211_TDLS_DISCOVERY_REQ:
		/* We don't support in-driver setup/teardown/discovery */
		return -ENOTSUPP;
	default:
		return -ENOTSUPP;
	}

	return 0;
}

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Johannes Berg 已提交
2976 2977 2978 2979 2980 2981 2982 2983 2984 2985 2986 2987 2988 2989 2990
static int ieee80211_probe_client(struct wiphy *wiphy, struct net_device *dev,
				  const u8 *peer, u64 *cookie)
{
	struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
	struct ieee80211_local *local = sdata->local;
	struct ieee80211_qos_hdr *nullfunc;
	struct sk_buff *skb;
	int size = sizeof(*nullfunc);
	__le16 fc;
	bool qos;
	struct ieee80211_tx_info *info;
	struct sta_info *sta;

	rcu_read_lock();
	sta = sta_info_get(sdata, peer);
2991
	if (sta) {
J
Johannes Berg 已提交
2992
		qos = test_sta_flag(sta, WLAN_STA_WME);
2993 2994 2995
		rcu_read_unlock();
	} else {
		rcu_read_unlock();
J
Johannes Berg 已提交
2996
		return -ENOLINK;
2997
	}
J
Johannes Berg 已提交
2998 2999 3000 3001 3002 3003 3004 3005 3006 3007 3008 3009 3010 3011 3012 3013 3014 3015 3016 3017 3018 3019 3020 3021 3022 3023 3024 3025 3026 3027 3028 3029 3030 3031 3032 3033 3034 3035 3036 3037 3038 3039 3040 3041 3042 3043

	if (qos) {
		fc = cpu_to_le16(IEEE80211_FTYPE_DATA |
				 IEEE80211_STYPE_QOS_NULLFUNC |
				 IEEE80211_FCTL_FROMDS);
	} else {
		size -= 2;
		fc = cpu_to_le16(IEEE80211_FTYPE_DATA |
				 IEEE80211_STYPE_NULLFUNC |
				 IEEE80211_FCTL_FROMDS);
	}

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

	skb->dev = dev;

	skb_reserve(skb, local->hw.extra_tx_headroom);

	nullfunc = (void *) skb_put(skb, size);
	nullfunc->frame_control = fc;
	nullfunc->duration_id = 0;
	memcpy(nullfunc->addr1, sta->sta.addr, ETH_ALEN);
	memcpy(nullfunc->addr2, sdata->vif.addr, ETH_ALEN);
	memcpy(nullfunc->addr3, sdata->vif.addr, ETH_ALEN);
	nullfunc->seq_ctrl = 0;

	info = IEEE80211_SKB_CB(skb);

	info->flags |= IEEE80211_TX_CTL_REQ_TX_STATUS |
		       IEEE80211_TX_INTFL_NL80211_FRAME_TX;

	skb_set_queue_mapping(skb, IEEE80211_AC_VO);
	skb->priority = 7;
	if (qos)
		nullfunc->qos_ctrl = cpu_to_le16(7);

	local_bh_disable();
	ieee80211_xmit(sdata, skb);
	local_bh_enable();

	*cookie = (unsigned long) skb;
	return 0;
}

3044 3045 3046 3047 3048 3049 3050 3051 3052 3053
static struct ieee80211_channel *
ieee80211_cfg_get_channel(struct wiphy *wiphy, struct wireless_dev *wdev,
			  enum nl80211_channel_type *type)
{
	struct ieee80211_local *local = wiphy_priv(wiphy);

	*type = local->_oper_channel_type;
	return local->oper_channel;
}

3054 3055 3056 3057 3058 3059 3060
#ifdef CONFIG_PM
static void ieee80211_set_wakeup(struct wiphy *wiphy, bool enabled)
{
	drv_set_wakeup(wiphy_priv(wiphy), enabled);
}
#endif

3061 3062 3063
struct cfg80211_ops mac80211_config_ops = {
	.add_virtual_intf = ieee80211_add_iface,
	.del_virtual_intf = ieee80211_del_iface,
3064
	.change_virtual_intf = ieee80211_change_iface,
3065 3066
	.start_p2p_device = ieee80211_start_p2p_device,
	.stop_p2p_device = ieee80211_stop_p2p_device,
3067 3068
	.add_key = ieee80211_add_key,
	.del_key = ieee80211_del_key,
3069
	.get_key = ieee80211_get_key,
3070
	.set_default_key = ieee80211_config_default_key,
3071
	.set_default_mgmt_key = ieee80211_config_default_mgmt_key,
3072 3073 3074
	.start_ap = ieee80211_start_ap,
	.change_beacon = ieee80211_change_beacon,
	.stop_ap = ieee80211_stop_ap,
3075 3076 3077
	.add_station = ieee80211_add_station,
	.del_station = ieee80211_del_station,
	.change_station = ieee80211_change_station,
3078
	.get_station = ieee80211_get_station,
3079
	.dump_station = ieee80211_dump_station,
3080
	.dump_survey = ieee80211_dump_survey,
3081 3082 3083 3084 3085 3086
#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,
3087 3088
	.update_mesh_config = ieee80211_update_mesh_config,
	.get_mesh_config = ieee80211_get_mesh_config,
3089 3090
	.join_mesh = ieee80211_join_mesh,
	.leave_mesh = ieee80211_leave_mesh,
3091
#endif
3092
	.change_bss = ieee80211_change_bss,
3093
	.set_txq_params = ieee80211_set_txq_params,
3094
	.set_monitor_channel = ieee80211_set_monitor_channel,
3095 3096
	.suspend = ieee80211_suspend,
	.resume = ieee80211_resume,
3097
	.scan = ieee80211_scan,
3098 3099
	.sched_scan_start = ieee80211_sched_scan_start,
	.sched_scan_stop = ieee80211_sched_scan_stop,
3100 3101 3102 3103
	.auth = ieee80211_auth,
	.assoc = ieee80211_assoc,
	.deauth = ieee80211_deauth,
	.disassoc = ieee80211_disassoc,
3104 3105
	.join_ibss = ieee80211_join_ibss,
	.leave_ibss = ieee80211_leave_ibss,
3106
	.set_wiphy_params = ieee80211_set_wiphy_params,
3107 3108
	.set_tx_power = ieee80211_set_tx_power,
	.get_tx_power = ieee80211_get_tx_power,
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Johannes Berg 已提交
3109
	.set_wds_peer = ieee80211_set_wds_peer,
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Johannes Berg 已提交
3110
	.rfkill_poll = ieee80211_rfkill_poll,
3111
	CFG80211_TESTMODE_CMD(ieee80211_testmode_cmd)
W
Wey-Yi Guy 已提交
3112
	CFG80211_TESTMODE_DUMP(ieee80211_testmode_dump)
J
Johannes Berg 已提交
3113
	.set_power_mgmt = ieee80211_set_power_mgmt,
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3114
	.set_bitrate_mask = ieee80211_set_bitrate_mask,
3115 3116
	.remain_on_channel = ieee80211_remain_on_channel,
	.cancel_remain_on_channel = ieee80211_cancel_remain_on_channel,
3117
	.mgmt_tx = ieee80211_mgmt_tx,
3118
	.mgmt_tx_cancel_wait = ieee80211_mgmt_tx_cancel_wait,
3119
	.set_cqm_rssi_config = ieee80211_set_cqm_rssi_config,
3120
	.mgmt_frame_register = ieee80211_mgmt_frame_register,
3121 3122
	.set_antenna = ieee80211_set_antenna,
	.get_antenna = ieee80211_get_antenna,
3123 3124
	.set_ringparam = ieee80211_set_ringparam,
	.get_ringparam = ieee80211_get_ringparam,
3125
	.set_rekey_data = ieee80211_set_rekey_data,
3126 3127
	.tdls_oper = ieee80211_tdls_oper,
	.tdls_mgmt = ieee80211_tdls_mgmt,
J
Johannes Berg 已提交
3128
	.probe_client = ieee80211_probe_client,
3129
	.set_noack_map = ieee80211_set_noack_map,
3130 3131 3132
#ifdef CONFIG_PM
	.set_wakeup = ieee80211_set_wakeup,
#endif
3133 3134 3135
	.get_et_sset_count = ieee80211_get_et_sset_count,
	.get_et_stats = ieee80211_get_et_stats,
	.get_et_strings = ieee80211_get_et_strings,
3136
	.get_channel = ieee80211_cfg_get_channel,
3137
};