cfg.c 100.8 KB
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/*
 * mac80211 configuration hooks for cfg80211
 *
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 * Copyright 2006-2010	Johannes Berg <johannes@sipsolutions.net>
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 *
 * This file is GPLv2 as found in COPYING.
 */

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#include <linux/ieee80211.h>
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#include <linux/nl80211.h>
#include <linux/rtnetlink.h>
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#include <linux/slab.h>
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#include <net/net_namespace.h>
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#include <linux/rcupdate.h>
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#include <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);
37

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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)
47
{
48
	ieee80211_if_remove(IEEE80211_WDEV_TO_SUB_IF(wdev));
49

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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;
60

61
	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)) {
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			u32 mask = MONITOR_FLAG_COOK_FRAMES |
				   MONITOR_FLAG_ACTIVE;

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			/*
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			 * Prohibit MONITOR_FLAG_COOK_FRAMES and
			 * MONITOR_FLAG_ACTIVE to be changed while the
			 * interface is up.
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			 * Else we would need to add a lot of cruft
			 * to update everything:
			 *	cooked_mntrs, monitor and all fif_* counters
			 *	reconfigure hardware
			 */
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			if ((*flags & mask) != (sdata->u.mntr_flags & mask))
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				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)
{
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	struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
	int ret;

	mutex_lock(&sdata->local->chanctx_mtx);
	ret = ieee80211_check_combinations(sdata, NULL, 0, 0);
	mutex_unlock(&sdata->local->chanctx_mtx);
	if (ret < 0)
		return ret;

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	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 ieee80211_local *local = sdata->local;
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	struct sta_info *sta = NULL;
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	const struct ieee80211_cipher_scheme *cs = NULL;
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	struct ieee80211_key *key;
149
	int err;
150

151
	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:
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		if (IS_ERR(local->wep_tx_tfm))
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			return -EINVAL;
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		break;
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	case WLAN_CIPHER_SUITE_CCMP:
	case WLAN_CIPHER_SUITE_AES_CMAC:
	case WLAN_CIPHER_SUITE_GCMP:
		break;
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	default:
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		cs = ieee80211_cs_get(local, params->cipher, sdata->vif.type);
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		break;
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	}

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	key = ieee80211_key_alloc(params->cipher, key_idx, params->key_len,
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				  params->key, params->seq_len, params->seq,
				  cs);
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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(&local->sta_mtx);
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182
	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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		/*
		 * The ASSOC test makes sure the driver is ready to
		 * receive the key. When wpa_supplicant has roamed
		 * using FT, it attempts to set the key before
		 * association has completed, this rejects that attempt
		 * so it will set the key again after assocation.
		 *
		 * TODO: accept the key if we have a station entry and
		 *       add it to the device after the station.
		 */
		if (!sta || !test_sta_flag(sta, WLAN_STA_ASSOC)) {
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			ieee80211_key_free_unused(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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	if (sta)
		sta->cipher_scheme = cs;

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	err = ieee80211_key_link(key, sdata, sta);
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 out_unlock:
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	mutex_unlock(&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[key_idx]);
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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, true);
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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 && key_idx < NUM_DEFAULT_KEYS)
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			key = rcu_dereference(sta->ptk[key_idx]);
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		else if (!pairwise &&
			 key_idx < NUM_DEFAULT_KEYS + NUM_DEFAULT_MGMT_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:
378
	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,
384 385
					u8 key_idx, bool uni,
					bool multi)
386
{
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	struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
388

389
	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)
{
398
	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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void sta_set_rate_info_tx(struct sta_info *sta,
			  const struct ieee80211_tx_rate *rate,
			  struct rate_info *rinfo)
{
	rinfo->flags = 0;
410
	if (rate->flags & IEEE80211_TX_RC_MCS) {
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		rinfo->flags |= RATE_INFO_FLAGS_MCS;
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		rinfo->mcs = rate->idx;
	} else if (rate->flags & IEEE80211_TX_RC_VHT_MCS) {
		rinfo->flags |= RATE_INFO_FLAGS_VHT_MCS;
		rinfo->mcs = ieee80211_rate_get_vht_mcs(rate);
		rinfo->nss = ieee80211_rate_get_vht_nss(rate);
	} else {
		struct ieee80211_supported_band *sband;
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		int shift = ieee80211_vif_get_shift(&sta->sdata->vif);
		u16 brate;

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		sband = sta->local->hw.wiphy->bands[
				ieee80211_get_sdata_band(sta->sdata)];
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		brate = sband->bitrates[rate->idx].bitrate;
		rinfo->legacy = DIV_ROUND_UP(brate, 1 << shift);
426
	}
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	if (rate->flags & IEEE80211_TX_RC_40_MHZ_WIDTH)
		rinfo->flags |= RATE_INFO_FLAGS_40_MHZ_WIDTH;
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	if (rate->flags & IEEE80211_TX_RC_80_MHZ_WIDTH)
		rinfo->flags |= RATE_INFO_FLAGS_80_MHZ_WIDTH;
	if (rate->flags & IEEE80211_TX_RC_160_MHZ_WIDTH)
		rinfo->flags |= RATE_INFO_FLAGS_160_MHZ_WIDTH;
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	if (rate->flags & IEEE80211_TX_RC_SHORT_GI)
		rinfo->flags |= RATE_INFO_FLAGS_SHORT_GI;
}

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void sta_set_rate_info_rx(struct sta_info *sta, struct rate_info *rinfo)
{
	rinfo->flags = 0;

	if (sta->last_rx_rate_flag & RX_FLAG_HT) {
		rinfo->flags |= RATE_INFO_FLAGS_MCS;
		rinfo->mcs = sta->last_rx_rate_idx;
	} else if (sta->last_rx_rate_flag & RX_FLAG_VHT) {
		rinfo->flags |= RATE_INFO_FLAGS_VHT_MCS;
		rinfo->nss = sta->last_rx_rate_vht_nss;
		rinfo->mcs = sta->last_rx_rate_idx;
	} else {
		struct ieee80211_supported_band *sband;
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		int shift = ieee80211_vif_get_shift(&sta->sdata->vif);
		u16 brate;
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		sband = sta->local->hw.wiphy->bands[
				ieee80211_get_sdata_band(sta->sdata)];
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		brate = sband->bitrates[sta->last_rx_rate_idx].bitrate;
		rinfo->legacy = DIV_ROUND_UP(brate, 1 << shift);
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	}

	if (sta->last_rx_rate_flag & RX_FLAG_40MHZ)
		rinfo->flags |= RATE_INFO_FLAGS_40_MHZ_WIDTH;
	if (sta->last_rx_rate_flag & RX_FLAG_SHORT_GI)
		rinfo->flags |= RATE_INFO_FLAGS_SHORT_GI;
463
	if (sta->last_rx_rate_vht_flag & RX_VHT_FLAG_80MHZ)
464
		rinfo->flags |= RATE_INFO_FLAGS_80_MHZ_WIDTH;
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	if (sta->last_rx_rate_vht_flag & RX_VHT_FLAG_80P80MHZ)
466
		rinfo->flags |= RATE_INFO_FLAGS_80P80_MHZ_WIDTH;
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	if (sta->last_rx_rate_vht_flag & RX_VHT_FLAG_160MHZ)
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		rinfo->flags |= RATE_INFO_FLAGS_160_MHZ_WIDTH;
}

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static void sta_set_sinfo(struct sta_info *sta, struct station_info *sinfo)
{
473
	struct ieee80211_sub_if_data *sdata = sta->sdata;
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	struct ieee80211_local *local = sdata->local;
475
	struct timespec uptime;
476
	u64 packets = 0;
477
	int i, ac;
478

479 480
	sinfo->generation = sdata->local->sta_generation;

481
	sinfo->filled = STATION_INFO_INACTIVE_TIME |
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			STATION_INFO_RX_BYTES64 |
			STATION_INFO_TX_BYTES64 |
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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);
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	sinfo->tx_bytes = 0;
	for (ac = 0; ac < IEEE80211_NUM_ACS; ac++) {
		sinfo->tx_bytes += sta->tx_bytes[ac];
		packets += sta->tx_packets[ac];
	}
	sinfo->tx_packets = packets;
506
	sinfo->rx_bytes = sta->rx_bytes;
507
	sinfo->rx_packets = sta->rx_packets;
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	sinfo->tx_retries = sta->tx_retry_count;
	sinfo->tx_failed = sta->tx_retry_failed;
510
	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)) {
515
		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);
520
	}
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	if (sta->chains) {
		sinfo->filled |= STATION_INFO_CHAIN_SIGNAL |
				 STATION_INFO_CHAIN_SIGNAL_AVG;

		sinfo->chains = sta->chains;
		for (i = 0; i < ARRAY_SIZE(sinfo->chain_signal); i++) {
			sinfo->chain_signal[i] = sta->chain_signal_last[i];
			sinfo->chain_signal_avg[i] =
				(s8) -ewma_read(&sta->chain_signal_avg[i]);
		}
	}
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533
	sta_set_rate_info_tx(sta, &sta->last_tx_rate, &sinfo->txrate);
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	sta_set_rate_info_rx(sta, &sinfo->rxrate);
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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 |
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				 STATION_INFO_PLINK_STATE |
				 STATION_INFO_LOCAL_PM |
				 STATION_INFO_PEER_PM |
				 STATION_INFO_NONPEER_PM;
544

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		sinfo->llid = sta->llid;
		sinfo->plid = sta->plid;
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		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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		sinfo->local_pm = sta->local_pm;
		sinfo->peer_pm = sta->peer_pm;
		sinfo->nonpeer_pm = sta->nonpeer_pm;
555
#endif
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556
	}
557 558 559 560 561 562 563 564 565 566

	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;
567 568 569 570 571 572

	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) |
573
				BIT(NL80211_STA_FLAG_AUTHENTICATED) |
574
				BIT(NL80211_STA_FLAG_ASSOCIATED) |
575
				BIT(NL80211_STA_FLAG_TDLS_PEER);
576 577 578 579 580 581 582 583 584 585
	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);
586 587
	if (test_sta_flag(sta, WLAN_STA_ASSOC))
		sinfo->sta_flags.set |= BIT(NL80211_STA_FLAG_ASSOCIATED);
588 589
	if (test_sta_flag(sta, WLAN_STA_TDLS_PEER))
		sinfo->sta_flags.set |= BIT(NL80211_STA_FLAG_TDLS_PEER);
590 591
}

592 593 594 595 596
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",
597 598 599
	"beacon_loss", "sta_state", "txrate", "rxrate", "signal",
	"channel", "noise", "ch_time", "ch_time_busy",
	"ch_time_ext_busy", "ch_time_rx", "ch_time_tx"
600 601 602 603 604 605 606
};
#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)
{
607 608 609
	struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
	int rv = 0;

610
	if (sset == ETH_SS_STATS)
611 612 613
		rv += STA_STATS_LEN;

	rv += drv_get_et_sset_count(sdata, sset);
614

615 616 617
	if (rv == 0)
		return -EOPNOTSUPP;
	return rv;
618 619 620 621 622 623 624 625
}

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);
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	struct ieee80211_chanctx_conf *chanctx_conf;
	struct ieee80211_channel *channel;
628 629
	struct sta_info *sta;
	struct ieee80211_local *local = sdata->local;
630 631 632 633
	struct station_info sinfo;
	struct survey_info survey;
	int i, q;
#define STA_STATS_SURVEY_LEN 7
634 635 636 637 638 639 640 641 642 643 644 645

	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;		\
							\
646 647
		data[i++] += sinfo.tx_packets;		\
		data[i++] += sinfo.tx_bytes;		\
648 649 650 651 652 653 654 655 656 657 658 659 660
		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.
	 */

661
	mutex_lock(&local->sta_mtx);
662 663 664

	if (sdata->vif.type == NL80211_IFTYPE_STATION) {
		sta = sta_info_get_bss(sdata, sdata->u.mgd.bssid);
665 666 667 668

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

669 670 671
		sinfo.filled = 0;
		sta_set_sinfo(sta, &sinfo);

672 673 674 675 676 677
		i = 0;
		ADD_STA_STATS(sta);

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


678
		if (sinfo.filled & STATION_INFO_TX_BITRATE)
679 680 681
			data[i] = 100000 *
				cfg80211_calculate_bitrate(&sinfo.txrate);
		i++;
682
		if (sinfo.filled & STATION_INFO_RX_BITRATE)
683 684 685 686
			data[i] = 100000 *
				cfg80211_calculate_bitrate(&sinfo.rxrate);
		i++;

687
		if (sinfo.filled & STATION_INFO_SIGNAL_AVG)
688 689
			data[i] = (u8)sinfo.signal_avg;
		i++;
690
	} else {
691
		list_for_each_entry(sta, &local->sta_list, list) {
692 693 694 695
			/* Make sure this station belongs to the proper dev */
			if (sta->sdata->dev != dev)
				continue;

696 697
			sinfo.filled = 0;
			sta_set_sinfo(sta, &sinfo);
698 699 700 701 702
			i = 0;
			ADD_STA_STATS(sta);
		}
	}

703 704 705
do_survey:
	i = STA_STATS_LEN - STA_STATS_SURVEY_LEN;
	/* Get survey stats for current channel */
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	survey.filled = 0;
707

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708 709 710
	rcu_read_lock();
	chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf);
	if (chanctx_conf)
711
		channel = chanctx_conf->def.chan;
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712 713 714 715 716 717 718 719 720 721 722 723 724 725
	else
		channel = NULL;
	rcu_read_unlock();

	if (channel) {
		q = 0;
		do {
			survey.filled = 0;
			if (drv_get_survey(local, q, &survey) != 0) {
				survey.filled = 0;
				break;
			}
			q++;
		} while (channel != survey.channel);
726 727 728 729 730 731 732 733 734 735 736 737 738 739 740 741 742 743 744 745 746 747 748 749 750 751 752 753 754 755 756
	}

	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;

757
	mutex_unlock(&local->sta_mtx);
758

759 760 761
	if (WARN_ON(i != STA_STATS_LEN))
		return;

762
	drv_get_et_stats(sdata, stats, &(data[STA_STATS_LEN]));
763 764 765 766 767 768
}

static void ieee80211_get_et_strings(struct wiphy *wiphy,
				     struct net_device *dev,
				     u32 sset, u8 *data)
{
769 770 771
	struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
	int sz_sta_stats = 0;

772
	if (sset == ETH_SS_STATS) {
773
		sz_sta_stats = sizeof(ieee80211_gstrings_sta_stats);
774
		memcpy(data, ieee80211_gstrings_sta_stats, sz_sta_stats);
775
	}
776
	drv_get_et_strings(sdata, sset, &(data[sz_sta_stats]));
777
}
778 779 780 781

static int ieee80211_dump_station(struct wiphy *wiphy, struct net_device *dev,
				 int idx, u8 *mac, struct station_info *sinfo)
{
782
	struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
783
	struct ieee80211_local *local = sdata->local;
784
	struct sta_info *sta;
785 786
	int ret = -ENOENT;

787
	mutex_lock(&local->sta_mtx);
788

789
	sta = sta_info_get_by_idx(sdata, idx);
790 791
	if (sta) {
		ret = 0;
792
		memcpy(mac, sta->sta.addr, ETH_ALEN);
793 794
		sta_set_sinfo(sta, sinfo);
	}
795

796
	mutex_unlock(&local->sta_mtx);
797

798
	return ret;
799 800
}

801 802 803 804 805 806 807 808
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);
}

809
static int ieee80211_get_station(struct wiphy *wiphy, struct net_device *dev,
810
				 u8 *mac, struct station_info *sinfo)
811
{
812
	struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
813
	struct ieee80211_local *local = sdata->local;
814
	struct sta_info *sta;
815
	int ret = -ENOENT;
816

817
	mutex_lock(&local->sta_mtx);
818

819
	sta = sta_info_get_bss(sdata, mac);
820 821 822 823 824
	if (sta) {
		ret = 0;
		sta_set_sinfo(sta, sinfo);
	}

825
	mutex_unlock(&local->sta_mtx);
826 827

	return ret;
828 829
}

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830
static int ieee80211_set_monitor_channel(struct wiphy *wiphy,
831
					 struct cfg80211_chan_def *chandef)
832 833
{
	struct ieee80211_local *local = wiphy_priv(wiphy);
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834 835
	struct ieee80211_sub_if_data *sdata;
	int ret = 0;
836

837
	if (cfg80211_chandef_identical(&local->monitor_chandef, chandef))
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Johannes Berg 已提交
838
		return 0;
839

840
	mutex_lock(&local->mtx);
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841 842 843 844 845 846 847
	mutex_lock(&local->iflist_mtx);
	if (local->use_chanctx) {
		sdata = rcu_dereference_protected(
				local->monitor_sdata,
				lockdep_is_held(&local->iflist_mtx));
		if (sdata) {
			ieee80211_vif_release_channel(sdata);
848
			ret = ieee80211_vif_use_channel(sdata, chandef,
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849 850 851
					IEEE80211_CHANCTX_EXCLUSIVE);
		}
	} else if (local->open_count == local->monitors) {
852
		local->_oper_chandef = *chandef;
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853 854
		ieee80211_hw_config(local, 0);
	}
855

856 857
	if (ret == 0)
		local->monitor_chandef = *chandef;
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858
	mutex_unlock(&local->iflist_mtx);
859
	mutex_unlock(&local->mtx);
860

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861
	return ret;
862 863
}

864
static int ieee80211_set_probe_resp(struct ieee80211_sub_if_data *sdata,
865
				    const u8 *resp, size_t resp_len)
866
{
867
	struct probe_resp *new, *old;
868 869

	if (!resp || !resp_len)
870
		return 1;
871

872
	old = sdata_dereference(sdata->u.ap.probe_resp, sdata);
873

874
	new = kzalloc(sizeof(struct probe_resp) + resp_len, GFP_KERNEL);
875 876 877
	if (!new)
		return -ENOMEM;

878 879
	new->len = resp_len;
	memcpy(new->data, resp, resp_len);
880 881

	rcu_assign_pointer(sdata->u.ap.probe_resp, new);
882 883
	if (old)
		kfree_rcu(old, rcu_head);
884 885 886 887

	return 0;
}

888 889
static int ieee80211_assign_beacon(struct ieee80211_sub_if_data *sdata,
				   struct cfg80211_beacon_data *params)
890 891 892
{
	struct beacon_data *new, *old;
	int new_head_len, new_tail_len;
893 894
	int size, err;
	u32 changed = BSS_CHANGED_BEACON;
895

896 897
	old = sdata_dereference(sdata->u.ap.beacon, sdata);

898 899 900

	/* Need to have a beacon head if we don't have one yet */
	if (!params->head && !old)
901
		return -EINVAL;
902 903 904 905 906 907 908 909 910 911 912 913 914 915 916 917 918 919 920 921 922 923 924 925 926 927 928 929 930 931 932 933 934 935 936 937 938 939 940 941 942 943 944 945

	/* 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);

946 947
	err = ieee80211_set_probe_resp(sdata, params->probe_resp,
				       params->probe_resp_len);
948 949 950
	if (err < 0)
		return err;
	if (err == 0)
951 952
		changed |= BSS_CHANGED_AP_PROBE_RESP;

953 954 955 956
	rcu_assign_pointer(sdata->u.ap.beacon, new);

	if (old)
		kfree_rcu(old, rcu_head);
957

958
	return changed;
959 960
}

961 962
static int ieee80211_start_ap(struct wiphy *wiphy, struct net_device *dev,
			      struct cfg80211_ap_settings *params)
963
{
964
	struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
965
	struct ieee80211_local *local = sdata->local;
966
	struct beacon_data *old;
967
	struct ieee80211_sub_if_data *vlan;
968 969 970
	u32 changed = BSS_CHANGED_BEACON_INT |
		      BSS_CHANGED_BEACON_ENABLED |
		      BSS_CHANGED_BEACON |
971 972
		      BSS_CHANGED_SSID |
		      BSS_CHANGED_P2P_PS;
973
	int err;
974

975
	old = sdata_dereference(sdata->u.ap.beacon, sdata);
976 977 978
	if (old)
		return -EALREADY;

979 980 981 982
	/* TODO: make hostapd tell us what it wants */
	sdata->smps_mode = IEEE80211_SMPS_OFF;
	sdata->needed_rx_chains = sdata->local->rx_chains;

983
	mutex_lock(&local->mtx);
984
	err = ieee80211_vif_use_channel(sdata, &params->chandef,
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985
					IEEE80211_CHANCTX_SHARED);
986 987
	if (!err)
		ieee80211_vif_copy_chanctx_to_vlans(sdata, false);
988
	mutex_unlock(&local->mtx);
989 990 991
	if (err)
		return err;

992 993 994 995 996 997
	/*
	 * 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;
998 999 1000 1001
	sdata->encrypt_headroom = ieee80211_cs_headroom(sdata->local,
							&params->crypto,
							sdata->vif.type);

1002 1003 1004 1005 1006
	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;
1007 1008 1009 1010
		vlan->encrypt_headroom =
			ieee80211_cs_headroom(sdata->local,
					      &params->crypto,
					      vlan->vif.type);
1011 1012
	}

1013 1014
	sdata->vif.bss_conf.beacon_int = params->beacon_interval;
	sdata->vif.bss_conf.dtim_period = params->dtim_period;
1015
	sdata->vif.bss_conf.enable_beacon = true;
1016 1017 1018 1019 1020 1021 1022 1023

	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);

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Janusz Dziedzic 已提交
1024 1025 1026 1027 1028 1029 1030
	memset(&sdata->vif.bss_conf.p2p_noa_attr, 0,
	       sizeof(sdata->vif.bss_conf.p2p_noa_attr));
	sdata->vif.bss_conf.p2p_noa_attr.oppps_ctwindow =
		params->p2p_ctwindow & IEEE80211_P2P_OPPPS_CTWINDOW_MASK;
	if (params->p2p_opp_ps)
		sdata->vif.bss_conf.p2p_noa_attr.oppps_ctwindow |=
					IEEE80211_P2P_OPPPS_ENABLE_BIT;
1031

1032
	err = ieee80211_assign_beacon(sdata, &params->beacon);
1033 1034
	if (err < 0) {
		ieee80211_vif_release_channel(sdata);
1035
		return err;
1036
	}
1037 1038
	changed |= err;

1039 1040
	err = drv_start_ap(sdata->local, sdata);
	if (err) {
1041 1042
		old = sdata_dereference(sdata->u.ap.beacon, sdata);

1043 1044 1045
		if (old)
			kfree_rcu(old, rcu_head);
		RCU_INIT_POINTER(sdata->u.ap.beacon, NULL);
1046
		ieee80211_vif_release_channel(sdata);
1047 1048 1049
		return err;
	}

1050
	ieee80211_recalc_dtim(local, sdata);
1051 1052
	ieee80211_bss_info_change_notify(sdata, changed);

1053 1054 1055 1056
	netif_carrier_on(dev);
	list_for_each_entry(vlan, &sdata->u.ap.vlans, u.vlan.list)
		netif_carrier_on(vlan->dev);

1057
	return 0;
1058 1059
}

1060 1061
static int ieee80211_change_beacon(struct wiphy *wiphy, struct net_device *dev,
				   struct cfg80211_beacon_data *params)
1062
{
1063
	struct ieee80211_sub_if_data *sdata;
1064
	struct beacon_data *old;
1065
	int err;
1066

1067
	sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1068
	sdata_assert_lock(sdata);
1069

1070 1071 1072 1073 1074 1075
	/* don't allow changing the beacon while CSA is in place - offset
	 * of channel switch counter may change
	 */
	if (sdata->vif.csa_active)
		return -EBUSY;

1076
	old = sdata_dereference(sdata->u.ap.beacon, sdata);
1077 1078 1079
	if (!old)
		return -ENOENT;

1080 1081 1082 1083 1084
	err = ieee80211_assign_beacon(sdata, params);
	if (err < 0)
		return err;
	ieee80211_bss_info_change_notify(sdata, err);
	return 0;
1085 1086
}

1087 1088 1089 1090 1091 1092 1093 1094 1095 1096 1097 1098 1099 1100 1101 1102 1103 1104 1105 1106 1107 1108 1109 1110 1111
bool ieee80211_csa_needs_block_tx(struct ieee80211_local *local)
{
	struct ieee80211_sub_if_data *sdata;

	lockdep_assert_held(&local->mtx);

	rcu_read_lock();
	list_for_each_entry_rcu(sdata, &local->interfaces, list) {
		if (!ieee80211_sdata_running(sdata))
			continue;

		if (!sdata->vif.csa_active)
			continue;

		if (!sdata->csa_block_tx)
			continue;

		rcu_read_unlock();
		return true;
	}
	rcu_read_unlock();

	return false;
}

1112
static int ieee80211_stop_ap(struct wiphy *wiphy, struct net_device *dev)
1113
{
1114 1115 1116 1117 1118
	struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
	struct ieee80211_sub_if_data *vlan;
	struct ieee80211_local *local = sdata->local;
	struct beacon_data *old_beacon;
	struct probe_resp *old_probe_resp;
1119
	struct cfg80211_chan_def chandef;
1120

1121 1122
	sdata_assert_lock(sdata);

1123
	old_beacon = sdata_dereference(sdata->u.ap.beacon, sdata);
1124
	if (!old_beacon)
1125
		return -ENOENT;
1126
	old_probe_resp = sdata_dereference(sdata->u.ap.probe_resp, sdata);
1127

1128
	/* abort any running channel switch */
1129
	mutex_lock(&local->mtx);
1130
	sdata->vif.csa_active = false;
1131 1132 1133 1134 1135 1136
	if (!ieee80211_csa_needs_block_tx(local))
		ieee80211_wake_queues_by_reason(&local->hw,
					IEEE80211_MAX_QUEUE_MAP,
					IEEE80211_QUEUE_STOP_REASON_CSA);
	mutex_unlock(&local->mtx);

1137 1138 1139
	kfree(sdata->u.ap.next_beacon);
	sdata->u.ap.next_beacon = NULL;

1140
	/* turn off carrier for this interface and dependent VLANs */
1141 1142 1143 1144
	list_for_each_entry(vlan, &sdata->u.ap.vlans, u.vlan.list)
		netif_carrier_off(vlan->dev);
	netif_carrier_off(dev);

1145
	/* remove beacon and probe response */
1146
	RCU_INIT_POINTER(sdata->u.ap.beacon, NULL);
1147 1148 1149 1150
	RCU_INIT_POINTER(sdata->u.ap.probe_resp, NULL);
	kfree_rcu(old_beacon, rcu_head);
	if (old_probe_resp)
		kfree_rcu(old_probe_resp, rcu_head);
1151
	sdata->u.ap.driver_smps_mode = IEEE80211_SMPS_OFF;
1152

1153
	__sta_info_flush(sdata, true);
1154
	ieee80211_free_keys(sdata, true);
1155

1156
	sdata->vif.bss_conf.enable_beacon = false;
1157
	sdata->vif.bss_conf.ssid_len = 0;
1158
	clear_bit(SDATA_STATE_OFFCHANNEL_BEACON_STOPPED, &sdata->state);
1159
	ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_BEACON_ENABLED);
1160

1161
	if (sdata->wdev.cac_started) {
1162
		chandef = sdata->vif.bss_conf.chandef;
1163
		cancel_delayed_work_sync(&sdata->dfs_cac_timer_work);
1164 1165
		cfg80211_cac_event(sdata->dev, &chandef,
				   NL80211_RADAR_CAC_ABORTED,
1166 1167 1168
				   GFP_KERNEL);
	}

1169 1170
	drv_stop_ap(sdata->local, sdata);

1171 1172 1173 1174
	/* free all potentially still buffered bcast frames */
	local->total_ps_buffered -= skb_queue_len(&sdata->u.ap.ps.bc_buf);
	skb_queue_purge(&sdata->u.ap.ps.bc_buf);

1175
	mutex_lock(&local->mtx);
1176
	ieee80211_vif_copy_chanctx_to_vlans(sdata, true);
J
Johannes Berg 已提交
1177
	ieee80211_vif_release_channel(sdata);
1178
	mutex_unlock(&local->mtx);
J
Johannes Berg 已提交
1179

1180
	return 0;
1181 1182
}

1183 1184 1185 1186 1187 1188 1189 1190 1191
/* 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
1192
} __packed;
1193 1194 1195 1196 1197 1198 1199 1200 1201 1202 1203 1204 1205 1206 1207 1208 1209

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
1210
	eth_broadcast_addr(msg->da);
1211
	memcpy(msg->sa, sta->sta.addr, ETH_ALEN);
1212 1213 1214 1215 1216 1217 1218 1219 1220
	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) */

1221 1222
	skb->dev = sta->sdata->dev;
	skb->protocol = eth_type_trans(skb, sta->sdata->dev);
1223
	memset(skb->cb, 0, sizeof(skb->cb));
1224
	netif_rx_ni(skb);
1225 1226
}

1227 1228 1229 1230 1231 1232 1233 1234 1235 1236 1237 1238 1239 1240 1241 1242 1243 1244 1245 1246 1247 1248 1249 1250 1251 1252 1253 1254 1255 1256 1257 1258 1259 1260 1261 1262 1263 1264 1265 1266 1267 1268 1269 1270 1271 1272 1273 1274 1275 1276 1277 1278
static int sta_apply_auth_flags(struct ieee80211_local *local,
				struct sta_info *sta,
				u32 mask, u32 set)
{
	int ret;

	if (mask & BIT(NL80211_STA_FLAG_AUTHENTICATED) &&
	    set & BIT(NL80211_STA_FLAG_AUTHENTICATED) &&
	    !test_sta_flag(sta, WLAN_STA_AUTH)) {
		ret = sta_info_move_state(sta, IEEE80211_STA_AUTH);
		if (ret)
			return ret;
	}

	if (mask & BIT(NL80211_STA_FLAG_ASSOCIATED) &&
	    set & BIT(NL80211_STA_FLAG_ASSOCIATED) &&
	    !test_sta_flag(sta, WLAN_STA_ASSOC)) {
		ret = sta_info_move_state(sta, IEEE80211_STA_ASSOC);
		if (ret)
			return ret;
	}

	if (mask & BIT(NL80211_STA_FLAG_AUTHORIZED)) {
		if (set & BIT(NL80211_STA_FLAG_AUTHORIZED))
			ret = sta_info_move_state(sta, IEEE80211_STA_AUTHORIZED);
		else if (test_sta_flag(sta, WLAN_STA_AUTHORIZED))
			ret = sta_info_move_state(sta, IEEE80211_STA_ASSOC);
		else
			ret = 0;
		if (ret)
			return ret;
	}

	if (mask & BIT(NL80211_STA_FLAG_ASSOCIATED) &&
	    !(set & BIT(NL80211_STA_FLAG_ASSOCIATED)) &&
	    test_sta_flag(sta, WLAN_STA_ASSOC)) {
		ret = sta_info_move_state(sta, IEEE80211_STA_AUTH);
		if (ret)
			return ret;
	}

	if (mask & BIT(NL80211_STA_FLAG_AUTHENTICATED) &&
	    !(set & BIT(NL80211_STA_FLAG_AUTHENTICATED)) &&
	    test_sta_flag(sta, WLAN_STA_AUTH)) {
		ret = sta_info_move_state(sta, IEEE80211_STA_NONE);
		if (ret)
			return ret;
	}

	return 0;
}

1279 1280 1281
static int sta_apply_parameters(struct ieee80211_local *local,
				struct sta_info *sta,
				struct station_parameters *params)
1282
{
1283
	int ret = 0;
1284
	struct ieee80211_supported_band *sband;
1285
	struct ieee80211_sub_if_data *sdata = sta->sdata;
J
Johannes Berg 已提交
1286
	enum ieee80211_band band = ieee80211_get_sdata_band(sdata);
1287
	u32 mask, set;
1288

J
Johannes Berg 已提交
1289
	sband = local->hw.wiphy->bands[band];
J
Johannes Berg 已提交
1290

1291 1292
	mask = params->sta_flags_mask;
	set = params->sta_flags_set;
J
Johannes Berg 已提交
1293

1294 1295 1296 1297 1298 1299 1300 1301 1302
	if (ieee80211_vif_is_mesh(&sdata->vif)) {
		/*
		 * In mesh mode, ASSOCIATED isn't part of the nl80211
		 * API but must follow AUTHENTICATED for driver state.
		 */
		if (mask & BIT(NL80211_STA_FLAG_AUTHENTICATED))
			mask |= BIT(NL80211_STA_FLAG_ASSOCIATED);
		if (set & BIT(NL80211_STA_FLAG_AUTHENTICATED))
			set |= BIT(NL80211_STA_FLAG_ASSOCIATED);
1303 1304 1305 1306 1307 1308 1309 1310 1311 1312 1313 1314
	} else if (test_sta_flag(sta, WLAN_STA_TDLS_PEER)) {
		/*
		 * TDLS -- everything follows authorized, but
		 * only becoming authorized is possible, not
		 * going back
		 */
		if (set & BIT(NL80211_STA_FLAG_AUTHORIZED)) {
			set |= BIT(NL80211_STA_FLAG_AUTHENTICATED) |
			       BIT(NL80211_STA_FLAG_ASSOCIATED);
			mask |= BIT(NL80211_STA_FLAG_AUTHENTICATED) |
				BIT(NL80211_STA_FLAG_ASSOCIATED);
		}
1315
	}
1316

1317 1318 1319
	ret = sta_apply_auth_flags(local, sta, mask, set);
	if (ret)
		return ret;
1320

1321 1322
	if (mask & BIT(NL80211_STA_FLAG_SHORT_PREAMBLE)) {
		if (set & BIT(NL80211_STA_FLAG_SHORT_PREAMBLE))
J
Johannes Berg 已提交
1323 1324 1325
			set_sta_flag(sta, WLAN_STA_SHORT_PREAMBLE);
		else
			clear_sta_flag(sta, WLAN_STA_SHORT_PREAMBLE);
1326
	}
1327

1328
	if (mask & BIT(NL80211_STA_FLAG_WME)) {
1329
		if (set & BIT(NL80211_STA_FLAG_WME)) {
J
Johannes Berg 已提交
1330
			set_sta_flag(sta, WLAN_STA_WME);
1331
			sta->sta.wme = true;
J
Johannes Berg 已提交
1332 1333 1334
		} else {
			clear_sta_flag(sta, WLAN_STA_WME);
			sta->sta.wme = false;
1335
		}
1336
	}
1337

1338 1339
	if (mask & BIT(NL80211_STA_FLAG_MFP)) {
		if (set & BIT(NL80211_STA_FLAG_MFP))
J
Johannes Berg 已提交
1340 1341 1342
			set_sta_flag(sta, WLAN_STA_MFP);
		else
			clear_sta_flag(sta, WLAN_STA_MFP);
1343
	}
1344

1345 1346
	if (mask & BIT(NL80211_STA_FLAG_TDLS_PEER)) {
		if (set & BIT(NL80211_STA_FLAG_TDLS_PEER))
J
Johannes Berg 已提交
1347 1348 1349
			set_sta_flag(sta, WLAN_STA_TDLS_PEER);
		else
			clear_sta_flag(sta, WLAN_STA_TDLS_PEER);
1350
	}
1351

1352 1353 1354 1355
	if (params->sta_modify_mask & STATION_PARAM_APPLY_UAPSD) {
		sta->sta.uapsd_queues = params->uapsd_queues;
		sta->sta.max_sp = params->max_sp;
	}
1356

1357 1358 1359 1360 1361 1362 1363
	/*
	 * 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
1364
	/*
1365 1366 1367 1368 1369
	 * Some of the following updates would be racy if called on an
	 * existing station, via ieee80211_change_station(). However,
	 * all such changes are rejected by cfg80211 except for updates
	 * changing the supported rates on an existing but not yet used
	 * TDLS peer.
J
Johannes Berg 已提交
1370 1371
	 */

1372 1373 1374 1375
	if (params->listen_interval >= 0)
		sta->listen_interval = params->listen_interval;

	if (params->supported_rates) {
1376 1377 1378 1379
		ieee80211_parse_bitrates(&sdata->vif.bss_conf.chandef,
					 sband, params->supported_rates,
					 params->supported_rates_len,
					 &sta->sta.supp_rates[band]);
1380
	}
1381

J
Johannes Berg 已提交
1382
	if (params->ht_capa)
B
Ben Greear 已提交
1383
		ieee80211_ht_cap_ie_to_sta_ht_cap(sdata, sband,
1384
						  params->ht_capa, sta);
1385

M
Mahesh Palivela 已提交
1386 1387
	if (params->vht_capa)
		ieee80211_vht_cap_ie_to_sta_vht_cap(sdata, sband,
1388
						    params->vht_capa, sta);
M
Mahesh Palivela 已提交
1389

1390 1391 1392 1393 1394 1395 1396 1397 1398
	if (params->opmode_notif_used) {
		/* returned value is only needed for rc update, but the
		 * rc isn't initialized here yet, so ignore it
		 */
		__ieee80211_vht_handle_opmode(sdata, sta,
					      params->opmode_notif,
					      band, false);
	}

1399
	if (ieee80211_vif_is_mesh(&sdata->vif)) {
1400
#ifdef CONFIG_MAC80211_MESH
1401
		u32 changed = 0;
1402 1403

		if (params->sta_modify_mask & STATION_PARAM_APPLY_PLINK_STATE) {
1404
			switch (params->plink_state) {
1405
			case NL80211_PLINK_ESTAB:
1406 1407 1408 1409
				if (sta->plink_state != NL80211_PLINK_ESTAB)
					changed = mesh_plink_inc_estab_count(
							sdata);
				sta->plink_state = params->plink_state;
M
Marco Porsch 已提交
1410 1411

				ieee80211_mps_sta_status_update(sta);
1412 1413
				changed |= ieee80211_mps_set_sta_local_pm(sta,
					      sdata->u.mesh.mshcfg.power_mode);
1414 1415
				break;
			case NL80211_PLINK_LISTEN:
1416
			case NL80211_PLINK_BLOCKED:
1417 1418 1419 1420 1421 1422 1423
			case NL80211_PLINK_OPN_SNT:
			case NL80211_PLINK_OPN_RCVD:
			case NL80211_PLINK_CNF_RCVD:
			case NL80211_PLINK_HOLDING:
				if (sta->plink_state == NL80211_PLINK_ESTAB)
					changed = mesh_plink_dec_estab_count(
							sdata);
1424
				sta->plink_state = params->plink_state;
M
Marco Porsch 已提交
1425 1426

				ieee80211_mps_sta_status_update(sta);
1427 1428
				changed |= ieee80211_mps_set_sta_local_pm(sta,
						NL80211_MESH_POWER_UNKNOWN);
1429 1430 1431 1432 1433
				break;
			default:
				/*  nothing  */
				break;
			}
1434 1435 1436 1437 1438 1439 1440 1441 1442 1443 1444 1445
		}

		switch (params->plink_action) {
		case NL80211_PLINK_ACTION_NO_ACTION:
			/* nothing */
			break;
		case NL80211_PLINK_ACTION_OPEN:
			changed |= mesh_plink_open(sta);
			break;
		case NL80211_PLINK_ACTION_BLOCK:
			changed |= mesh_plink_block(sta);
			break;
1446
		}
M
Marco Porsch 已提交
1447 1448

		if (params->local_pm)
1449 1450 1451
			changed |=
			      ieee80211_mps_set_sta_local_pm(sta,
							     params->local_pm);
1452
		ieee80211_mbss_info_change_notify(sdata, changed);
1453
#endif
J
Johannes Berg 已提交
1454
	}
1455 1456

	return 0;
1457 1458 1459 1460 1461
}

static int ieee80211_add_station(struct wiphy *wiphy, struct net_device *dev,
				 u8 *mac, struct station_parameters *params)
{
1462
	struct ieee80211_local *local = wiphy_priv(wiphy);
1463 1464
	struct sta_info *sta;
	struct ieee80211_sub_if_data *sdata;
J
Johannes Berg 已提交
1465
	int err;
1466
	int layer2_update;
1467 1468 1469 1470

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

1471 1472
		if (sdata->vif.type != NL80211_IFTYPE_AP_VLAN &&
		    sdata->vif.type != NL80211_IFTYPE_AP)
1473 1474 1475 1476
			return -EINVAL;
	} else
		sdata = IEEE80211_DEV_TO_SUB_IF(dev);

1477
	if (ether_addr_equal(mac, sdata->vif.addr))
1478 1479 1480 1481 1482 1483
		return -EINVAL;

	if (is_multicast_ether_addr(mac))
		return -EINVAL;

	sta = sta_info_alloc(sdata, mac, GFP_KERNEL);
J
Johannes Berg 已提交
1484 1485
	if (!sta)
		return -ENOMEM;
1486

1487 1488 1489 1490
	/*
	 * defaults -- if userspace wants something else we'll
	 * change it accordingly in sta_apply_parameters()
	 */
1491 1492 1493
	if (!(params->sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER))) {
		sta_info_pre_move_state(sta, IEEE80211_STA_AUTH);
		sta_info_pre_move_state(sta, IEEE80211_STA_ASSOC);
1494 1495
	} else {
		sta->sta.tdls = true;
1496
	}
1497

1498 1499 1500 1501 1502
	err = sta_apply_parameters(local, sta, params);
	if (err) {
		sta_info_free(local, sta);
		return err;
	}
1503

1504
	/*
1505 1506
	 * for TDLS, rate control should be initialized only when
	 * rates are known and station is marked authorized
1507 1508 1509
	 */
	if (!test_sta_flag(sta, WLAN_STA_TDLS_PEER))
		rate_control_rate_init(sta);
1510

1511 1512 1513
	layer2_update = sdata->vif.type == NL80211_IFTYPE_AP_VLAN ||
		sdata->vif.type == NL80211_IFTYPE_AP;

1514
	err = sta_info_insert_rcu(sta);
J
Johannes Berg 已提交
1515 1516 1517 1518 1519
	if (err) {
		rcu_read_unlock();
		return err;
	}

1520
	if (layer2_update)
J
Johannes Berg 已提交
1521 1522 1523 1524
		ieee80211_send_layer2_update(sta);

	rcu_read_unlock();

1525 1526 1527 1528 1529 1530
	return 0;
}

static int ieee80211_del_station(struct wiphy *wiphy, struct net_device *dev,
				 u8 *mac)
{
1531
	struct ieee80211_sub_if_data *sdata;
1532

1533 1534
	sdata = IEEE80211_DEV_TO_SUB_IF(dev);

1535 1536
	if (mac)
		return sta_info_destroy_addr_bss(sdata, mac);
1537

1538
	sta_info_flush(sdata);
1539 1540 1541 1542
	return 0;
}

static int ieee80211_change_station(struct wiphy *wiphy,
1543
				    struct net_device *dev, u8 *mac,
1544 1545
				    struct station_parameters *params)
{
1546
	struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1547
	struct ieee80211_local *local = wiphy_priv(wiphy);
1548 1549
	struct sta_info *sta;
	struct ieee80211_sub_if_data *vlansdata;
1550
	enum cfg80211_station_type statype;
1551
	int err;
1552

1553
	mutex_lock(&local->sta_mtx);
J
Johannes Berg 已提交
1554

1555
	sta = sta_info_get_bss(sdata, mac);
J
Johannes Berg 已提交
1556
	if (!sta) {
1557 1558
		err = -ENOENT;
		goto out_err;
J
Johannes Berg 已提交
1559
	}
1560

1561 1562
	switch (sdata->vif.type) {
	case NL80211_IFTYPE_MESH_POINT:
1563
		if (sdata->u.mesh.user_mpm)
1564
			statype = CFG80211_STA_MESH_PEER_USER;
1565
		else
1566
			statype = CFG80211_STA_MESH_PEER_KERNEL;
1567 1568 1569 1570 1571 1572 1573 1574 1575 1576 1577 1578 1579 1580 1581 1582 1583 1584 1585 1586 1587
		break;
	case NL80211_IFTYPE_ADHOC:
		statype = CFG80211_STA_IBSS;
		break;
	case NL80211_IFTYPE_STATION:
		if (!test_sta_flag(sta, WLAN_STA_TDLS_PEER)) {
			statype = CFG80211_STA_AP_STA;
			break;
		}
		if (test_sta_flag(sta, WLAN_STA_AUTHORIZED))
			statype = CFG80211_STA_TDLS_PEER_ACTIVE;
		else
			statype = CFG80211_STA_TDLS_PEER_SETUP;
		break;
	case NL80211_IFTYPE_AP:
	case NL80211_IFTYPE_AP_VLAN:
		statype = CFG80211_STA_AP_CLIENT;
		break;
	default:
		err = -EOPNOTSUPP;
		goto out_err;
1588 1589
	}

1590 1591 1592 1593
	err = cfg80211_check_station_change(wiphy, params, statype);
	if (err)
		goto out_err;

1594
	if (params->vlan && params->vlan != sta->sdata->dev) {
1595 1596 1597
		bool prev_4addr = false;
		bool new_4addr = false;

1598 1599
		vlansdata = IEEE80211_DEV_TO_SUB_IF(params->vlan);

1600
		if (params->vlan->ieee80211_ptr->use_4addr) {
J
Johannes Berg 已提交
1601
			if (vlansdata->u.vlan.sta) {
1602 1603
				err = -EBUSY;
				goto out_err;
J
Johannes Berg 已提交
1604
			}
1605

1606
			rcu_assign_pointer(vlansdata->u.vlan.sta, sta);
1607 1608 1609 1610 1611
			new_4addr = true;
		}

		if (sta->sdata->vif.type == NL80211_IFTYPE_AP_VLAN &&
		    sta->sdata->u.vlan.sta) {
M
Monam Agarwal 已提交
1612
			RCU_INIT_POINTER(sta->sdata->u.vlan.sta, NULL);
1613
			prev_4addr = true;
1614 1615
		}

1616
		sta->sdata = vlansdata;
1617 1618 1619 1620 1621 1622 1623 1624 1625

		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);
		}

1626 1627 1628
		ieee80211_send_layer2_update(sta);
	}

1629
	err = sta_apply_parameters(local, sta, params);
1630 1631
	if (err)
		goto out_err;
1632

1633 1634 1635
	/* When peer becomes authorized, init rate control as well */
	if (test_sta_flag(sta, WLAN_STA_TDLS_PEER) &&
	    test_sta_flag(sta, WLAN_STA_AUTHORIZED))
1636 1637
		rate_control_rate_init(sta);

1638
	mutex_unlock(&local->sta_mtx);
J
Johannes Berg 已提交
1639

1640 1641 1642 1643 1644 1645 1646 1647 1648 1649 1650 1651 1652 1653
	if ((sdata->vif.type == NL80211_IFTYPE_AP ||
	     sdata->vif.type == NL80211_IFTYPE_AP_VLAN) &&
	    sta->known_smps_mode != sta->sdata->bss->req_smps &&
	    test_sta_flag(sta, WLAN_STA_AUTHORIZED) &&
	    sta_info_tx_streams(sta) != 1) {
		ht_dbg(sta->sdata,
		       "%pM just authorized and MIMO capable - update SMPS\n",
		       sta->sta.addr);
		ieee80211_send_smps_action(sta->sdata,
			sta->sdata->bss->req_smps,
			sta->sta.addr,
			sta->sdata->vif.bss_conf.bssid);
	}

1654
	if (sdata->vif.type == NL80211_IFTYPE_STATION &&
E
Eliad Peller 已提交
1655
	    params->sta_flags_mask & BIT(NL80211_STA_FLAG_AUTHORIZED)) {
1656
		ieee80211_recalc_ps(local, -1);
E
Eliad Peller 已提交
1657 1658
		ieee80211_recalc_ps_vif(sdata);
	}
1659

1660
	return 0;
1661 1662 1663
out_err:
	mutex_unlock(&local->sta_mtx);
	return err;
1664 1665
}

1666 1667 1668 1669
#ifdef CONFIG_MAC80211_MESH
static int ieee80211_add_mpath(struct wiphy *wiphy, struct net_device *dev,
				 u8 *dst, u8 *next_hop)
{
1670
	struct ieee80211_sub_if_data *sdata;
1671 1672 1673
	struct mesh_path *mpath;
	struct sta_info *sta;

1674 1675
	sdata = IEEE80211_DEV_TO_SUB_IF(dev);

1676
	rcu_read_lock();
1677
	sta = sta_info_get(sdata, next_hop);
1678 1679
	if (!sta) {
		rcu_read_unlock();
1680
		return -ENOENT;
1681
	}
1682

1683 1684
	mpath = mesh_path_add(sdata, dst);
	if (IS_ERR(mpath)) {
1685
		rcu_read_unlock();
1686
		return PTR_ERR(mpath);
1687
	}
1688 1689

	mesh_path_fix_nexthop(mpath, sta);
1690

1691 1692 1693 1694 1695
	rcu_read_unlock();
	return 0;
}

static int ieee80211_del_mpath(struct wiphy *wiphy, struct net_device *dev,
J
Johannes Berg 已提交
1696
			       u8 *dst)
1697
{
1698 1699
	struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);

1700
	if (dst)
J
Johannes Berg 已提交
1701
		return mesh_path_del(sdata, dst);
1702

1703
	mesh_path_flush_by_iface(sdata);
1704 1705 1706 1707 1708 1709 1710
	return 0;
}

static int ieee80211_change_mpath(struct wiphy *wiphy,
				    struct net_device *dev,
				    u8 *dst, u8 *next_hop)
{
1711
	struct ieee80211_sub_if_data *sdata;
1712 1713 1714
	struct mesh_path *mpath;
	struct sta_info *sta;

1715 1716
	sdata = IEEE80211_DEV_TO_SUB_IF(dev);

1717 1718
	rcu_read_lock();

1719
	sta = sta_info_get(sdata, next_hop);
1720 1721
	if (!sta) {
		rcu_read_unlock();
1722
		return -ENOENT;
1723
	}
1724

J
Johannes Berg 已提交
1725
	mpath = mesh_path_lookup(sdata, dst);
1726 1727 1728 1729 1730 1731
	if (!mpath) {
		rcu_read_unlock();
		return -ENOENT;
	}

	mesh_path_fix_nexthop(mpath, sta);
1732

1733 1734 1735 1736 1737 1738 1739
	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
1740 1741 1742 1743
	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);
1744 1745 1746
	else
		memset(next_hop, 0, ETH_ALEN);

1747 1748
	memset(pinfo, 0, sizeof(*pinfo));

1749 1750
	pinfo->generation = mesh_paths_generation;

1751
	pinfo->filled = MPATH_INFO_FRAME_QLEN |
1752
			MPATH_INFO_SN |
1753 1754 1755 1756 1757 1758 1759
			MPATH_INFO_METRIC |
			MPATH_INFO_EXPTIME |
			MPATH_INFO_DISCOVERY_TIMEOUT |
			MPATH_INFO_DISCOVERY_RETRIES |
			MPATH_INFO_FLAGS;

	pinfo->frame_qlen = mpath->frame_queue.qlen;
1760
	pinfo->sn = mpath->sn;
1761 1762 1763 1764 1765 1766 1767 1768 1769 1770
	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;
1771 1772
	if (mpath->flags & MESH_PATH_SN_VALID)
		pinfo->flags |= NL80211_MPATH_FLAG_SN_VALID;
1773 1774
	if (mpath->flags & MESH_PATH_FIXED)
		pinfo->flags |= NL80211_MPATH_FLAG_FIXED;
1775 1776
	if (mpath->flags & MESH_PATH_RESOLVED)
		pinfo->flags |= NL80211_MPATH_FLAG_RESOLVED;
1777 1778 1779 1780 1781 1782
}

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

{
1783
	struct ieee80211_sub_if_data *sdata;
1784 1785
	struct mesh_path *mpath;

1786 1787
	sdata = IEEE80211_DEV_TO_SUB_IF(dev);

1788
	rcu_read_lock();
J
Johannes Berg 已提交
1789
	mpath = mesh_path_lookup(sdata, dst);
1790 1791 1792 1793 1794 1795 1796 1797 1798 1799 1800 1801 1802 1803
	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)
{
1804
	struct ieee80211_sub_if_data *sdata;
1805 1806
	struct mesh_path *mpath;

1807 1808
	sdata = IEEE80211_DEV_TO_SUB_IF(dev);

1809
	rcu_read_lock();
J
Johannes Berg 已提交
1810
	mpath = mesh_path_lookup_by_idx(sdata, idx);
1811 1812 1813 1814 1815 1816 1817 1818 1819
	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;
}
1820

1821
static int ieee80211_get_mesh_config(struct wiphy *wiphy,
1822 1823 1824 1825 1826 1827 1828 1829 1830 1831 1832 1833 1834 1835 1836
				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;
}

1837 1838 1839 1840 1841
static int copy_mesh_setup(struct ieee80211_if_mesh *ifmsh,
		const struct mesh_setup *setup)
{
	u8 *new_ie;
	const u8 *old_ie;
1842 1843
	struct ieee80211_sub_if_data *sdata = container_of(ifmsh,
					struct ieee80211_sub_if_data, u.mesh);
1844

1845
	/* allocate information elements */
1846
	new_ie = NULL;
1847
	old_ie = ifmsh->ie;
1848

1849 1850
	if (setup->ie_len) {
		new_ie = kmemdup(setup->ie, setup->ie_len,
1851 1852 1853 1854
				GFP_KERNEL);
		if (!new_ie)
			return -ENOMEM;
	}
1855 1856 1857
	ifmsh->ie_len = setup->ie_len;
	ifmsh->ie = new_ie;
	kfree(old_ie);
1858 1859 1860 1861

	/* 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);
1862
	ifmsh->mesh_sp_id = setup->sync_method;
1863 1864
	ifmsh->mesh_pp_id = setup->path_sel_proto;
	ifmsh->mesh_pm_id = setup->path_metric;
1865
	ifmsh->user_mpm = setup->user_mpm;
1866
	ifmsh->mesh_auth_id = setup->auth_id;
1867 1868 1869 1870 1871
	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;
1872

1873 1874 1875
	/* mcast rate setting in Mesh Node */
	memcpy(sdata->vif.bss_conf.mcast_rate, setup->mcast_rate,
						sizeof(setup->mcast_rate));
1876
	sdata->vif.bss_conf.basic_rates = setup->basic_rates;
1877

1878 1879 1880
	sdata->vif.bss_conf.beacon_int = setup->beacon_interval;
	sdata->vif.bss_conf.dtim_period = setup->dtim_period;

1881 1882 1883
	return 0;
}

1884
static int ieee80211_update_mesh_config(struct wiphy *wiphy,
1885 1886
					struct net_device *dev, u32 mask,
					const struct mesh_config *nconf)
1887 1888 1889
{
	struct mesh_config *conf;
	struct ieee80211_sub_if_data *sdata;
1890 1891
	struct ieee80211_if_mesh *ifmsh;

1892
	sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1893
	ifmsh = &sdata->u.mesh;
1894 1895 1896 1897 1898 1899 1900 1901 1902 1903 1904 1905 1906 1907 1908

	/* 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;
1909
	if (_chg_mesh_attr(NL80211_MESHCONF_ELEMENT_TTL, mask))
1910
		conf->element_ttl = nconf->element_ttl;
1911 1912 1913
	if (_chg_mesh_attr(NL80211_MESHCONF_AUTO_OPEN_PLINKS, mask)) {
		if (ifmsh->user_mpm)
			return -EBUSY;
1914
		conf->auto_open_plinks = nconf->auto_open_plinks;
1915
	}
1916 1917 1918
	if (_chg_mesh_attr(NL80211_MESHCONF_SYNC_OFFSET_MAX_NEIGHBOR, mask))
		conf->dot11MeshNbrOffsetMaxNeighbor =
			nconf->dot11MeshNbrOffsetMaxNeighbor;
1919 1920 1921 1922 1923 1924 1925 1926 1927 1928 1929 1930 1931
	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;
1932 1933 1934
	if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_PERR_MIN_INTERVAL, mask))
		conf->dot11MeshHWMPperrMinInterval =
			nconf->dot11MeshHWMPperrMinInterval;
1935 1936 1937 1938
	if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME,
			   mask))
		conf->dot11MeshHWMPnetDiameterTraversalTime =
			nconf->dot11MeshHWMPnetDiameterTraversalTime;
1939 1940 1941 1942
	if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_ROOTMODE, mask)) {
		conf->dot11MeshHWMPRootMode = nconf->dot11MeshHWMPRootMode;
		ieee80211_mesh_root_setup(ifmsh);
	}
1943
	if (_chg_mesh_attr(NL80211_MESHCONF_GATE_ANNOUNCEMENTS, mask)) {
T
Thomas Pedersen 已提交
1944 1945 1946 1947
		/* our current gate announcement implementation rides on root
		 * announcements, so require this ifmsh to also be a root node
		 * */
		if (nconf->dot11MeshGateAnnouncementProtocol &&
1948 1949
		    !(conf->dot11MeshHWMPRootMode > IEEE80211_ROOTMODE_ROOT)) {
			conf->dot11MeshHWMPRootMode = IEEE80211_PROACTIVE_RANN;
T
Thomas Pedersen 已提交
1950 1951
			ieee80211_mesh_root_setup(ifmsh);
		}
1952 1953 1954
		conf->dot11MeshGateAnnouncementProtocol =
			nconf->dot11MeshGateAnnouncementProtocol;
	}
1955
	if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_RANN_INTERVAL, mask))
1956 1957
		conf->dot11MeshHWMPRannInterval =
			nconf->dot11MeshHWMPRannInterval;
1958 1959
	if (_chg_mesh_attr(NL80211_MESHCONF_FORWARDING, mask))
		conf->dot11MeshForwarding = nconf->dot11MeshForwarding;
1960 1961 1962 1963 1964 1965 1966 1967
	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;
	}
1968 1969 1970 1971 1972
	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);
	}
1973 1974 1975 1976 1977 1978
	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;
1979 1980 1981
	if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_CONFIRMATION_INTERVAL, mask))
		conf->dot11MeshHWMPconfirmationInterval =
			nconf->dot11MeshHWMPconfirmationInterval;
M
Marco Porsch 已提交
1982 1983 1984 1985
	if (_chg_mesh_attr(NL80211_MESHCONF_POWER_MODE, mask)) {
		conf->power_mode = nconf->power_mode;
		ieee80211_mps_local_status_update(sdata);
	}
T
Thomas Pedersen 已提交
1986
	if (_chg_mesh_attr(NL80211_MESHCONF_AWAKE_WINDOW, mask))
M
Marco Porsch 已提交
1987 1988
		conf->dot11MeshAwakeWindowDuration =
			nconf->dot11MeshAwakeWindowDuration;
1989 1990
	if (_chg_mesh_attr(NL80211_MESHCONF_PLINK_TIMEOUT, mask))
		conf->plink_timeout = nconf->plink_timeout;
T
Thomas Pedersen 已提交
1991
	ieee80211_mbss_info_change_notify(sdata, BSS_CHANGED_BEACON);
1992 1993 1994
	return 0;
}

1995 1996 1997 1998 1999 2000
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;
2001
	int err;
2002

2003 2004 2005 2006
	memcpy(&ifmsh->mshcfg, conf, sizeof(struct mesh_config));
	err = copy_mesh_setup(ifmsh, setup);
	if (err)
		return err;
2007

2008 2009 2010 2011
	/* can mesh use other SMPS modes? */
	sdata->smps_mode = IEEE80211_SMPS_OFF;
	sdata->needed_rx_chains = sdata->local->rx_chains;

2012
	mutex_lock(&sdata->local->mtx);
2013
	err = ieee80211_vif_use_channel(sdata, &setup->chandef,
J
Johannes Berg 已提交
2014
					IEEE80211_CHANCTX_SHARED);
2015
	mutex_unlock(&sdata->local->mtx);
2016 2017 2018
	if (err)
		return err;

T
Thomas Pedersen 已提交
2019
	return ieee80211_start_mesh(sdata);
2020 2021 2022 2023 2024 2025 2026
}

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);
2027
	mutex_lock(&sdata->local->mtx);
J
Johannes Berg 已提交
2028
	ieee80211_vif_release_channel(sdata);
2029
	mutex_unlock(&sdata->local->mtx);
2030 2031 2032

	return 0;
}
2033 2034
#endif

2035 2036 2037 2038
static int ieee80211_change_bss(struct wiphy *wiphy,
				struct net_device *dev,
				struct bss_parameters *params)
{
J
Johannes Berg 已提交
2039 2040
	struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
	enum ieee80211_band band;
2041 2042
	u32 changed = 0;

2043
	if (!sdata_dereference(sdata->u.ap.beacon, sdata))
J
Johannes Berg 已提交
2044 2045 2046
		return -ENOENT;

	band = ieee80211_get_sdata_band(sdata);
2047 2048

	if (params->use_cts_prot >= 0) {
J
Johannes Berg 已提交
2049
		sdata->vif.bss_conf.use_cts_prot = params->use_cts_prot;
2050 2051 2052
		changed |= BSS_CHANGED_ERP_CTS_PROT;
	}
	if (params->use_short_preamble >= 0) {
J
Johannes Berg 已提交
2053
		sdata->vif.bss_conf.use_short_preamble =
2054 2055 2056
			params->use_short_preamble;
		changed |= BSS_CHANGED_ERP_PREAMBLE;
	}
2057 2058

	if (!sdata->vif.bss_conf.use_short_slot &&
J
Johannes Berg 已提交
2059
	    band == IEEE80211_BAND_5GHZ) {
2060 2061 2062 2063
		sdata->vif.bss_conf.use_short_slot = true;
		changed |= BSS_CHANGED_ERP_SLOT;
	}

2064
	if (params->use_short_slot_time >= 0) {
J
Johannes Berg 已提交
2065
		sdata->vif.bss_conf.use_short_slot =
2066 2067 2068 2069
			params->use_short_slot_time;
		changed |= BSS_CHANGED_ERP_SLOT;
	}

2070
	if (params->basic_rates) {
2071 2072 2073 2074 2075
		ieee80211_parse_bitrates(&sdata->vif.bss_conf.chandef,
					 wiphy->bands[band],
					 params->basic_rates,
					 params->basic_rates_len,
					 &sdata->vif.bss_conf.basic_rates);
2076 2077 2078
		changed |= BSS_CHANGED_BASIC_RATES;
	}

2079 2080 2081 2082 2083 2084 2085
	if (params->ap_isolate >= 0) {
		if (params->ap_isolate)
			sdata->flags |= IEEE80211_SDATA_DONT_BRIDGE_PACKETS;
		else
			sdata->flags &= ~IEEE80211_SDATA_DONT_BRIDGE_PACKETS;
	}

2086 2087 2088 2089 2090 2091
	if (params->ht_opmode >= 0) {
		sdata->vif.bss_conf.ht_operation_mode =
			(u16) params->ht_opmode;
		changed |= BSS_CHANGED_HT;
	}

2092
	if (params->p2p_ctwindow >= 0) {
J
Janusz Dziedzic 已提交
2093 2094 2095 2096
		sdata->vif.bss_conf.p2p_noa_attr.oppps_ctwindow &=
					~IEEE80211_P2P_OPPPS_CTWINDOW_MASK;
		sdata->vif.bss_conf.p2p_noa_attr.oppps_ctwindow |=
			params->p2p_ctwindow & IEEE80211_P2P_OPPPS_CTWINDOW_MASK;
2097 2098 2099
		changed |= BSS_CHANGED_P2P_PS;
	}

J
Janusz Dziedzic 已提交
2100 2101 2102 2103 2104 2105 2106
	if (params->p2p_opp_ps > 0) {
		sdata->vif.bss_conf.p2p_noa_attr.oppps_ctwindow |=
					IEEE80211_P2P_OPPPS_ENABLE_BIT;
		changed |= BSS_CHANGED_P2P_PS;
	} else if (params->p2p_opp_ps == 0) {
		sdata->vif.bss_conf.p2p_noa_attr.oppps_ctwindow &=
					~IEEE80211_P2P_OPPPS_ENABLE_BIT;
2107 2108 2109
		changed |= BSS_CHANGED_P2P_PS;
	}

2110 2111 2112 2113 2114
	ieee80211_bss_info_change_notify(sdata, changed);

	return 0;
}

2115
static int ieee80211_set_txq_params(struct wiphy *wiphy,
2116
				    struct net_device *dev,
2117 2118 2119
				    struct ieee80211_txq_params *params)
{
	struct ieee80211_local *local = wiphy_priv(wiphy);
2120
	struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2121 2122 2123 2124 2125
	struct ieee80211_tx_queue_params p;

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

2126 2127 2128
	if (local->hw.queues < IEEE80211_NUM_ACS)
		return -EOPNOTSUPP;

2129 2130 2131 2132 2133
	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
2134 2135 2136 2137 2138 2139 2140

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

2141 2142
	sdata->tx_conf[params->ac] = p;
	if (drv_conf_tx(local, sdata, params->ac, &p)) {
J
Joe Perches 已提交
2143
		wiphy_debug(local->hw.wiphy,
2144 2145
			    "failed to set TX queue parameters for AC %d\n",
			    params->ac);
2146 2147 2148
		return -EINVAL;
	}

2149 2150
	ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_QOS);

2151 2152 2153
	return 0;
}

2154
#ifdef CONFIG_PM
J
Johannes Berg 已提交
2155 2156
static int ieee80211_suspend(struct wiphy *wiphy,
			     struct cfg80211_wowlan *wowlan)
2157
{
2158
	return __ieee80211_suspend(wiphy_priv(wiphy), wowlan);
2159 2160 2161 2162 2163 2164 2165 2166 2167 2168 2169
}

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

2170 2171 2172
static int ieee80211_scan(struct wiphy *wiphy,
			  struct cfg80211_scan_request *req)
{
J
Johannes Berg 已提交
2173 2174 2175
	struct ieee80211_sub_if_data *sdata;

	sdata = IEEE80211_WDEV_TO_SUB_IF(req->wdev);
2176

2177 2178 2179 2180 2181
	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:
2182
	case NL80211_IFTYPE_P2P_DEVICE:
2183 2184 2185 2186
		break;
	case NL80211_IFTYPE_P2P_GO:
		if (sdata->local->ops->hw_scan)
			break;
2187 2188 2189 2190 2191
		/*
		 * FIXME: implement NoA while scanning in software,
		 * for now fall through to allow scanning only when
		 * beaconing hasn't been configured yet
		 */
2192
	case NL80211_IFTYPE_AP:
2193 2194 2195 2196 2197 2198 2199 2200 2201 2202
		/*
		 * If the scan has been forced (and the driver supports
		 * forcing), don't care about being beaconing already.
		 * This will create problems to the attached stations (e.g. all
		 * the  frames sent while scanning on other channel will be
		 * lost)
		 */
		if (sdata->u.ap.beacon &&
		    (!(wiphy->features & NL80211_FEATURE_AP_SCAN) ||
		     !(req->flags & NL80211_SCAN_FLAG_AP)))
2203 2204 2205 2206 2207
			return -EOPNOTSUPP;
		break;
	default:
		return -EOPNOTSUPP;
	}
2208 2209 2210 2211

	return ieee80211_request_scan(sdata, req);
}

2212 2213 2214 2215 2216 2217 2218 2219 2220 2221 2222 2223 2224 2225
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
2226
ieee80211_sched_scan_stop(struct wiphy *wiphy, struct net_device *dev)
2227 2228 2229 2230 2231 2232
{
	struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);

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

2233
	return ieee80211_request_sched_scan_stop(sdata);
2234 2235
}

2236 2237 2238
static int ieee80211_auth(struct wiphy *wiphy, struct net_device *dev,
			  struct cfg80211_auth_request *req)
{
2239
	return ieee80211_mgd_auth(IEEE80211_DEV_TO_SUB_IF(dev), req);
2240 2241 2242 2243 2244
}

static int ieee80211_assoc(struct wiphy *wiphy, struct net_device *dev,
			   struct cfg80211_assoc_request *req)
{
2245
	return ieee80211_mgd_assoc(IEEE80211_DEV_TO_SUB_IF(dev), req);
2246 2247 2248
}

static int ieee80211_deauth(struct wiphy *wiphy, struct net_device *dev,
2249
			    struct cfg80211_deauth_request *req)
2250
{
2251
	return ieee80211_mgd_deauth(IEEE80211_DEV_TO_SUB_IF(dev), req);
2252 2253 2254
}

static int ieee80211_disassoc(struct wiphy *wiphy, struct net_device *dev,
2255
			      struct cfg80211_disassoc_request *req)
2256
{
2257
	return ieee80211_mgd_disassoc(IEEE80211_DEV_TO_SUB_IF(dev), req);
2258 2259
}

2260 2261 2262
static int ieee80211_join_ibss(struct wiphy *wiphy, struct net_device *dev,
			       struct cfg80211_ibss_params *params)
{
J
Johannes Berg 已提交
2263
	return ieee80211_ibss_join(IEEE80211_DEV_TO_SUB_IF(dev), params);
2264 2265 2266 2267
}

static int ieee80211_leave_ibss(struct wiphy *wiphy, struct net_device *dev)
{
J
Johannes Berg 已提交
2268
	return ieee80211_ibss_leave(IEEE80211_DEV_TO_SUB_IF(dev));
2269 2270
}

2271 2272 2273 2274 2275
static int ieee80211_set_mcast_rate(struct wiphy *wiphy, struct net_device *dev,
				    int rate[IEEE80211_NUM_BANDS])
{
	struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);

2276 2277
	memcpy(sdata->vif.bss_conf.mcast_rate, rate,
	       sizeof(int) * IEEE80211_NUM_BANDS);
2278 2279 2280 2281

	return 0;
}

2282 2283 2284
static int ieee80211_set_wiphy_params(struct wiphy *wiphy, u32 changed)
{
	struct ieee80211_local *local = wiphy_priv(wiphy);
2285
	int err;
2286

2287 2288 2289 2290 2291 2292 2293
	if (changed & WIPHY_PARAM_FRAG_THRESHOLD) {
		err = drv_set_frag_threshold(local, wiphy->frag_threshold);

		if (err)
			return err;
	}

2294 2295 2296 2297 2298 2299 2300
	if (changed & WIPHY_PARAM_COVERAGE_CLASS) {
		err = drv_set_coverage_class(local, wiphy->coverage_class);

		if (err)
			return err;
	}

2301
	if (changed & WIPHY_PARAM_RTS_THRESHOLD) {
2302
		err = drv_set_rts_threshold(local, wiphy->rts_threshold);
2303

2304 2305
		if (err)
			return err;
2306 2307
	}

2308 2309 2310
	if (changed & WIPHY_PARAM_RETRY_SHORT) {
		if (wiphy->retry_short > IEEE80211_MAX_TX_RETRY)
			return -EINVAL;
2311
		local->hw.conf.short_frame_max_tx_count = wiphy->retry_short;
2312 2313 2314 2315
	}
	if (changed & WIPHY_PARAM_RETRY_LONG) {
		if (wiphy->retry_long > IEEE80211_MAX_TX_RETRY)
			return -EINVAL;
2316
		local->hw.conf.long_frame_max_tx_count = wiphy->retry_long;
2317
	}
2318 2319 2320 2321 2322 2323 2324
	if (changed &
	    (WIPHY_PARAM_RETRY_SHORT | WIPHY_PARAM_RETRY_LONG))
		ieee80211_hw_config(local, IEEE80211_CONF_CHANGE_RETRY_LIMITS);

	return 0;
}

2325
static int ieee80211_set_tx_power(struct wiphy *wiphy,
2326
				  struct wireless_dev *wdev,
2327
				  enum nl80211_tx_power_setting type, int mbm)
2328 2329
{
	struct ieee80211_local *local = wiphy_priv(wiphy);
2330
	struct ieee80211_sub_if_data *sdata;
2331

2332 2333 2334 2335 2336 2337 2338 2339 2340 2341 2342 2343 2344 2345 2346 2347 2348 2349 2350
	if (wdev) {
		sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);

		switch (type) {
		case NL80211_TX_POWER_AUTOMATIC:
			sdata->user_power_level = IEEE80211_UNSET_POWER_LEVEL;
			break;
		case NL80211_TX_POWER_LIMITED:
		case NL80211_TX_POWER_FIXED:
			if (mbm < 0 || (mbm % 100))
				return -EOPNOTSUPP;
			sdata->user_power_level = MBM_TO_DBM(mbm);
			break;
		}

		ieee80211_recalc_txpower(sdata);

		return 0;
	}
J
Johannes Berg 已提交
2351

2352
	switch (type) {
2353
	case NL80211_TX_POWER_AUTOMATIC:
2354
		local->user_power_level = IEEE80211_UNSET_POWER_LEVEL;
2355
		break;
2356 2357 2358 2359 2360
	case NL80211_TX_POWER_LIMITED:
	case NL80211_TX_POWER_FIXED:
		if (mbm < 0 || (mbm % 100))
			return -EOPNOTSUPP;
		local->user_power_level = MBM_TO_DBM(mbm);
2361 2362 2363
		break;
	}

2364 2365 2366 2367 2368 2369
	mutex_lock(&local->iflist_mtx);
	list_for_each_entry(sdata, &local->interfaces, list)
		sdata->user_power_level = local->user_power_level;
	list_for_each_entry(sdata, &local->interfaces, list)
		ieee80211_recalc_txpower(sdata);
	mutex_unlock(&local->iflist_mtx);
2370 2371 2372 2373

	return 0;
}

2374 2375 2376
static int ieee80211_get_tx_power(struct wiphy *wiphy,
				  struct wireless_dev *wdev,
				  int *dbm)
2377 2378
{
	struct ieee80211_local *local = wiphy_priv(wiphy);
2379
	struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
2380

2381 2382 2383 2384
	if (!local->use_chanctx)
		*dbm = local->hw.conf.power_level;
	else
		*dbm = sdata->vif.bss_conf.txpower;
2385 2386 2387 2388

	return 0;
}

J
Johannes Berg 已提交
2389
static int ieee80211_set_wds_peer(struct wiphy *wiphy, struct net_device *dev,
J
Johannes Berg 已提交
2390
				  const u8 *addr)
J
Johannes Berg 已提交
2391 2392 2393 2394 2395 2396 2397 2398
{
	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
2399 2400 2401 2402 2403 2404 2405
static void ieee80211_rfkill_poll(struct wiphy *wiphy)
{
	struct ieee80211_local *local = wiphy_priv(wiphy);

	drv_rfkill_poll(local);
}

2406
#ifdef CONFIG_NL80211_TESTMODE
2407 2408 2409
static int ieee80211_testmode_cmd(struct wiphy *wiphy,
				  struct wireless_dev *wdev,
				  void *data, int len)
2410 2411
{
	struct ieee80211_local *local = wiphy_priv(wiphy);
2412
	struct ieee80211_vif *vif = NULL;
2413 2414 2415 2416

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

2417 2418 2419 2420 2421 2422 2423 2424 2425
	if (wdev) {
		struct ieee80211_sub_if_data *sdata;

		sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
		if (sdata->flags & IEEE80211_SDATA_IN_DRIVER)
			vif = &sdata->vif;
	}

	return local->ops->testmode_cmd(&local->hw, vif, data, len);
2426
}
W
Wey-Yi Guy 已提交
2427 2428 2429 2430 2431 2432 2433 2434 2435 2436 2437 2438 2439

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);
}
2440 2441
#endif

2442 2443 2444 2445 2446 2447 2448 2449 2450 2451 2452 2453 2454 2455 2456 2457 2458 2459 2460 2461 2462 2463 2464 2465 2466 2467 2468 2469 2470 2471 2472 2473 2474 2475 2476 2477 2478 2479 2480 2481 2482 2483 2484 2485 2486 2487 2488 2489 2490 2491 2492 2493 2494 2495 2496 2497 2498 2499 2500 2501 2502 2503 2504 2505 2506 2507 2508 2509 2510 2511 2512 2513 2514 2515 2516 2517 2518 2519 2520 2521 2522 2523 2524 2525 2526 2527
int __ieee80211_request_smps_ap(struct ieee80211_sub_if_data *sdata,
				enum ieee80211_smps_mode smps_mode)
{
	struct sta_info *sta;
	enum ieee80211_smps_mode old_req;
	int i;

	if (WARN_ON_ONCE(sdata->vif.type != NL80211_IFTYPE_AP))
		return -EINVAL;

	if (sdata->vif.bss_conf.chandef.width == NL80211_CHAN_WIDTH_20_NOHT)
		return 0;

	old_req = sdata->u.ap.req_smps;
	sdata->u.ap.req_smps = smps_mode;

	/* AUTOMATIC doesn't mean much for AP - don't allow it */
	if (old_req == smps_mode ||
	    smps_mode == IEEE80211_SMPS_AUTOMATIC)
		return 0;

	 /* If no associated stations, there's no need to do anything */
	if (!atomic_read(&sdata->u.ap.num_mcast_sta)) {
		sdata->smps_mode = smps_mode;
		ieee80211_queue_work(&sdata->local->hw, &sdata->recalc_smps);
		return 0;
	}

	ht_dbg(sdata,
	       "SMSP %d requested in AP mode, sending Action frame to %d stations\n",
	       smps_mode, atomic_read(&sdata->u.ap.num_mcast_sta));

	mutex_lock(&sdata->local->sta_mtx);
	for (i = 0; i < STA_HASH_SIZE; i++) {
		for (sta = rcu_dereference_protected(sdata->local->sta_hash[i],
				lockdep_is_held(&sdata->local->sta_mtx));
		     sta;
		     sta = rcu_dereference_protected(sta->hnext,
				lockdep_is_held(&sdata->local->sta_mtx))) {
			/*
			 * Only stations associated to our AP and
			 * associated VLANs
			 */
			if (sta->sdata->bss != &sdata->u.ap)
				continue;

			/* This station doesn't support MIMO - skip it */
			if (sta_info_tx_streams(sta) == 1)
				continue;

			/*
			 * Don't wake up a STA just to send the action frame
			 * unless we are getting more restrictive.
			 */
			if (test_sta_flag(sta, WLAN_STA_PS_STA) &&
			    !ieee80211_smps_is_restrictive(sta->known_smps_mode,
							   smps_mode)) {
				ht_dbg(sdata,
				       "Won't send SMPS to sleeping STA %pM\n",
				       sta->sta.addr);
				continue;
			}

			/*
			 * If the STA is not authorized, wait until it gets
			 * authorized and the action frame will be sent then.
			 */
			if (!test_sta_flag(sta, WLAN_STA_AUTHORIZED))
				continue;

			ht_dbg(sdata, "Sending SMPS to %pM\n", sta->sta.addr);
			ieee80211_send_smps_action(sdata, smps_mode,
						   sta->sta.addr,
						   sdata->vif.bss_conf.bssid);
		}
	}
	mutex_unlock(&sdata->local->sta_mtx);

	sdata->smps_mode = smps_mode;
	ieee80211_queue_work(&sdata->local->hw, &sdata->recalc_smps);

	return 0;
}

int __ieee80211_request_smps_mgd(struct ieee80211_sub_if_data *sdata,
				 enum ieee80211_smps_mode smps_mode)
2528 2529 2530 2531 2532
{
	const u8 *ap;
	enum ieee80211_smps_mode old_req;
	int err;

2533
	lockdep_assert_held(&sdata->wdev.mtx);
2534

2535 2536 2537
	if (WARN_ON_ONCE(sdata->vif.type != NL80211_IFTYPE_STATION))
		return -EINVAL;

2538 2539 2540 2541 2542 2543 2544 2545 2546
	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
2547 2548
	 * association, there's no need to do anything, just store
	 * the new value until we associate.
2549 2550
	 */
	if (!sdata->u.mgd.associated ||
2551
	    sdata->vif.bss_conf.chandef.width == NL80211_CHAN_WIDTH_20_NOHT)
2552 2553
		return 0;

2554
	ap = sdata->u.mgd.associated->bssid;
2555 2556 2557 2558 2559 2560 2561 2562 2563 2564 2565 2566 2567 2568 2569 2570 2571

	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
2572 2573 2574 2575 2576 2577
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);

2578
	if (sdata->vif.type != NL80211_IFTYPE_STATION)
2579 2580
		return -EOPNOTSUPP;

J
Johannes Berg 已提交
2581 2582 2583 2584
	if (!(local->hw.flags & IEEE80211_HW_SUPPORTS_PS))
		return -EOPNOTSUPP;

	if (enabled == sdata->u.mgd.powersave &&
2585
	    timeout == local->dynamic_ps_forced_timeout)
J
Johannes Berg 已提交
2586 2587 2588
		return 0;

	sdata->u.mgd.powersave = enabled;
2589
	local->dynamic_ps_forced_timeout = timeout;
J
Johannes Berg 已提交
2590

2591
	/* no change, but if automatic follow powersave */
2592
	sdata_lock(sdata);
2593
	__ieee80211_request_smps_mgd(sdata, sdata->u.mgd.req_smps);
2594
	sdata_unlock(sdata);
2595

J
Johannes Berg 已提交
2596 2597 2598 2599
	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
2600
	ieee80211_recalc_ps_vif(sdata);
J
Johannes Berg 已提交
2601 2602 2603 2604

	return 0;
}

2605 2606 2607 2608 2609 2610 2611 2612 2613 2614 2615 2616 2617 2618 2619 2620
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 */
2621 2622
	if (sdata->u.mgd.associated &&
	    sdata->vif.driver_flags & IEEE80211_VIF_SUPPORTS_CQM_RSSI)
2623 2624 2625 2626 2627
		ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_CQM);

	return 0;
}

J
Johannes Berg 已提交
2628 2629 2630 2631 2632 2633 2634
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);
2635
	int i, ret;
2636

2637 2638 2639
	if (!ieee80211_sdata_running(sdata))
		return -ENETDOWN;

2640 2641 2642 2643 2644
	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
2645

2646
	for (i = 0; i < IEEE80211_NUM_BANDS; i++) {
2647 2648 2649
		struct ieee80211_supported_band *sband = wiphy->bands[i];
		int j;

2650
		sdata->rc_rateidx_mask[i] = mask->control[i].legacy;
2651 2652
		memcpy(sdata->rc_rateidx_mcs_mask[i], mask->control[i].ht_mcs,
		       sizeof(mask->control[i].ht_mcs));
2653 2654 2655 2656 2657 2658 2659 2660 2661 2662

		sdata->rc_has_mcs_mask[i] = false;
		if (!sband)
			continue;

		for (j = 0; j < IEEE80211_HT_MCS_MASK_LEN; j++)
			if (~sdata->rc_rateidx_mcs_mask[i][j]) {
				sdata->rc_has_mcs_mask[i] = true;
				break;
			}
2663
	}
J
Johannes Berg 已提交
2664

2665
	return 0;
J
Johannes Berg 已提交
2666 2667
}

2668 2669 2670 2671
static int ieee80211_start_roc_work(struct ieee80211_local *local,
				    struct ieee80211_sub_if_data *sdata,
				    struct ieee80211_channel *channel,
				    unsigned int duration, u64 *cookie,
2672 2673
				    struct sk_buff *txskb,
				    enum ieee80211_roc_type type)
2674 2675 2676
{
	struct ieee80211_roc_work *roc, *tmp;
	bool queued = false;
2677 2678 2679 2680
	int ret;

	lockdep_assert_held(&local->mtx);

2681 2682 2683
	if (local->use_chanctx && !local->ops->remain_on_channel)
		return -EOPNOTSUPP;

2684 2685 2686 2687
	roc = kzalloc(sizeof(*roc), GFP_KERNEL);
	if (!roc)
		return -ENOMEM;

2688 2689 2690 2691 2692 2693 2694 2695 2696 2697 2698 2699
	/*
	 * 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;

2700 2701 2702 2703
	roc->chan = channel;
	roc->duration = duration;
	roc->req_duration = duration;
	roc->frame = txskb;
2704
	roc->type = type;
2705 2706 2707 2708 2709
	roc->mgmt_tx_cookie = (unsigned long)txskb;
	roc->sdata = sdata;
	INIT_DELAYED_WORK(&roc->work, ieee80211_sw_roc_work);
	INIT_LIST_HEAD(&roc->dependents);

2710 2711 2712 2713 2714 2715 2716 2717 2718 2719 2720 2721 2722 2723 2724 2725 2726 2727
	/*
	 * cookie is either the roc cookie (for normal roc)
	 * or the SKB (for mgmt TX)
	 */
	if (!txskb) {
		/* local->mtx protects this */
		local->roc_cookie_counter++;
		roc->cookie = local->roc_cookie_counter;
		/* wow, you wrapped 64 bits ... more likely a bug */
		if (WARN_ON(roc->cookie == 0)) {
			roc->cookie = 1;
			local->roc_cookie_counter++;
		}
		*cookie = roc->cookie;
	} else {
		*cookie = (unsigned long)txskb;
	}

2728
	/* if there's one pending or we're scanning, queue this one */
2729 2730
	if (!list_empty(&local->roc_list) ||
	    local->scanning || local->radar_detect_enabled)
2731 2732 2733 2734 2735 2736 2737 2738 2739 2740
		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) */

2741
	ret = drv_remain_on_channel(local, sdata, channel, duration, type);
2742
	if (ret) {
2743 2744
		kfree(roc);
		return ret;
2745 2746
	}

2747 2748 2749 2750 2751
	roc->started = true;
	goto out_queue;

 out_check_combine:
	list_for_each_entry(tmp, &local->roc_list, list) {
2752
		if (tmp->chan != channel || tmp->sdata != sdata)
2753 2754 2755 2756 2757 2758 2759
			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.
2760 2761
		 * If the type of the new ROC has higher priority, modify the
		 * type of the previous one to match that of the new one.
2762 2763 2764 2765
		 */
		if (!tmp->started) {
			list_add_tail(&roc->list, &tmp->dependents);
			tmp->duration = max(tmp->duration, roc->duration);
2766
			tmp->type = max(tmp->type, roc->type);
2767 2768 2769 2770 2771 2772 2773 2774 2775 2776 2777
			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
2778
			 * when the master one begins. If it has begun,
2779 2780
			 * check that there's still a minimum time left and
			 * if so, start this one, transmitting the frame, but
2781
			 * add it to the list directly after this one with
2782 2783 2784 2785 2786 2787
			 * 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.
2788 2789
			 * TODO: the ROC type is ignored here, assuming that it
			 * is better to immediately use the current ROC.
2790 2791 2792 2793 2794 2795 2796 2797 2798 2799 2800 2801 2802 2803 2804 2805 2806 2807 2808 2809 2810 2811 2812 2813 2814 2815 2816 2817 2818 2819 2820 2821 2822 2823 2824 2825 2826 2827 2828 2829 2830 2831 2832 2833 2834 2835 2836 2837 2838 2839 2840 2841 2842 2843 2844 2845 2846 2847 2848 2849 2850
			 */
			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);

	return 0;
2851 2852
}

2853
static int ieee80211_remain_on_channel(struct wiphy *wiphy,
2854
				       struct wireless_dev *wdev,
2855 2856 2857 2858
				       struct ieee80211_channel *chan,
				       unsigned int duration,
				       u64 *cookie)
{
2859
	struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
2860
	struct ieee80211_local *local = sdata->local;
2861
	int ret;
2862

2863
	mutex_lock(&local->mtx);
2864
	ret = ieee80211_start_roc_work(local, sdata, chan,
2865 2866
				       duration, cookie, NULL,
				       IEEE80211_ROC_TYPE_NORMAL);
2867
	mutex_unlock(&local->mtx);
2868

2869
	return ret;
2870 2871
}

2872 2873
static int ieee80211_cancel_roc(struct ieee80211_local *local,
				u64 cookie, bool mgmt_tx)
2874
{
2875
	struct ieee80211_roc_work *roc, *tmp, *found = NULL;
2876 2877
	int ret;

2878 2879
	mutex_lock(&local->mtx);
	list_for_each_entry_safe(roc, tmp, &local->roc_list, list) {
2880 2881 2882
		struct ieee80211_roc_work *dep, *tmp2;

		list_for_each_entry_safe(dep, tmp2, &roc->dependents, list) {
2883
			if (!mgmt_tx && dep->cookie != cookie)
2884 2885 2886 2887 2888 2889 2890
				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);

2891
			ieee80211_roc_notify_destroy(dep, true);
2892 2893 2894
			return 0;
		}

2895
		if (!mgmt_tx && roc->cookie != cookie)
2896 2897 2898
			continue;
		else if (mgmt_tx && roc->mgmt_tx_cookie != cookie)
			continue;
2899

2900 2901 2902
		found = roc;
		break;
	}
2903

2904 2905 2906 2907
	if (!found) {
		mutex_unlock(&local->mtx);
		return -ENOENT;
	}
2908

2909 2910 2911 2912 2913 2914 2915
	/*
	 * 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.
	 */

2916 2917 2918 2919 2920 2921 2922 2923
	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;
			}
		}
2924

2925
		list_del(&found->list);
2926

2927 2928
		if (found->started)
			ieee80211_start_next_roc(local);
2929
		mutex_unlock(&local->mtx);
2930

2931
		ieee80211_roc_notify_destroy(found, true);
2932 2933 2934 2935
	} else {
		/* work may be pending so use it all the time */
		found->abort = true;
		ieee80211_queue_delayed_work(&local->hw, &found->work, 0);
2936 2937 2938

		mutex_unlock(&local->mtx);

2939 2940
		/* work will clean up etc */
		flush_delayed_work(&found->work);
2941 2942
		WARN_ON(!found->to_be_freed);
		kfree(found);
2943
	}
2944

2945
	return 0;
2946 2947
}

2948
static int ieee80211_cancel_remain_on_channel(struct wiphy *wiphy,
2949
					      struct wireless_dev *wdev,
2950
					      u64 cookie)
2951
{
2952
	struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
2953
	struct ieee80211_local *local = sdata->local;
2954

2955
	return ieee80211_cancel_roc(local, cookie, false);
2956 2957
}

2958 2959
static int ieee80211_start_radar_detection(struct wiphy *wiphy,
					   struct net_device *dev,
2960 2961
					   struct cfg80211_chan_def *chandef,
					   u32 cac_time_ms)
2962 2963 2964 2965 2966
{
	struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
	struct ieee80211_local *local = sdata->local;
	int err;

2967 2968 2969 2970 2971
	mutex_lock(&local->mtx);
	if (!list_empty(&local->roc_list) || local->scanning) {
		err = -EBUSY;
		goto out_unlock;
	}
2972 2973 2974 2975 2976 2977 2978 2979

	/* whatever, but channel contexts should not complain about that one */
	sdata->smps_mode = IEEE80211_SMPS_OFF;
	sdata->needed_rx_chains = local->rx_chains;

	err = ieee80211_vif_use_channel(sdata, chandef,
					IEEE80211_CHANCTX_SHARED);
	if (err)
2980
		goto out_unlock;
2981 2982

	ieee80211_queue_delayed_work(&sdata->local->hw,
2983 2984
				     &sdata->dfs_cac_timer_work,
				     msecs_to_jiffies(cac_time_ms));
2985

2986 2987 2988
 out_unlock:
	mutex_unlock(&local->mtx);
	return err;
2989 2990
}

2991 2992 2993 2994 2995 2996 2997 2998 2999 3000 3001 3002 3003 3004 3005 3006 3007 3008 3009 3010 3011 3012 3013 3014 3015 3016 3017 3018 3019 3020 3021 3022 3023 3024 3025 3026 3027 3028 3029 3030 3031 3032 3033 3034 3035 3036 3037 3038 3039 3040 3041 3042 3043 3044 3045 3046
static struct cfg80211_beacon_data *
cfg80211_beacon_dup(struct cfg80211_beacon_data *beacon)
{
	struct cfg80211_beacon_data *new_beacon;
	u8 *pos;
	int len;

	len = beacon->head_len + beacon->tail_len + beacon->beacon_ies_len +
	      beacon->proberesp_ies_len + beacon->assocresp_ies_len +
	      beacon->probe_resp_len;

	new_beacon = kzalloc(sizeof(*new_beacon) + len, GFP_KERNEL);
	if (!new_beacon)
		return NULL;

	pos = (u8 *)(new_beacon + 1);
	if (beacon->head_len) {
		new_beacon->head_len = beacon->head_len;
		new_beacon->head = pos;
		memcpy(pos, beacon->head, beacon->head_len);
		pos += beacon->head_len;
	}
	if (beacon->tail_len) {
		new_beacon->tail_len = beacon->tail_len;
		new_beacon->tail = pos;
		memcpy(pos, beacon->tail, beacon->tail_len);
		pos += beacon->tail_len;
	}
	if (beacon->beacon_ies_len) {
		new_beacon->beacon_ies_len = beacon->beacon_ies_len;
		new_beacon->beacon_ies = pos;
		memcpy(pos, beacon->beacon_ies, beacon->beacon_ies_len);
		pos += beacon->beacon_ies_len;
	}
	if (beacon->proberesp_ies_len) {
		new_beacon->proberesp_ies_len = beacon->proberesp_ies_len;
		new_beacon->proberesp_ies = pos;
		memcpy(pos, beacon->proberesp_ies, beacon->proberesp_ies_len);
		pos += beacon->proberesp_ies_len;
	}
	if (beacon->assocresp_ies_len) {
		new_beacon->assocresp_ies_len = beacon->assocresp_ies_len;
		new_beacon->assocresp_ies = pos;
		memcpy(pos, beacon->assocresp_ies, beacon->assocresp_ies_len);
		pos += beacon->assocresp_ies_len;
	}
	if (beacon->probe_resp_len) {
		new_beacon->probe_resp_len = beacon->probe_resp_len;
		beacon->probe_resp = pos;
		memcpy(pos, beacon->probe_resp, beacon->probe_resp_len);
		pos += beacon->probe_resp_len;
	}

	return new_beacon;
}

3047
void ieee80211_csa_finish(struct ieee80211_vif *vif)
3048
{
3049
	struct ieee80211_sub_if_data *sdata = vif_to_sdata(vif);
3050

3051 3052 3053 3054
	ieee80211_queue_work(&sdata->local->hw,
			     &sdata->csa_finalize_work);
}
EXPORT_SYMBOL(ieee80211_csa_finish);
3055

3056 3057
static int ieee80211_set_after_csa_beacon(struct ieee80211_sub_if_data *sdata,
					  u32 *changed)
3058
{
3059
	int err;
3060

3061 3062 3063
	switch (sdata->vif.type) {
	case NL80211_IFTYPE_AP:
		err = ieee80211_assign_beacon(sdata, sdata->u.ap.next_beacon);
3064 3065 3066
		kfree(sdata->u.ap.next_beacon);
		sdata->u.ap.next_beacon = NULL;

3067
		if (err < 0)
3068 3069
			return err;
		*changed |= err;
3070 3071
		break;
	case NL80211_IFTYPE_ADHOC:
3072 3073
		err = ieee80211_ibss_finish_csa(sdata);
		if (err < 0)
3074 3075
			return err;
		*changed |= err;
3076
		break;
3077 3078 3079 3080
#ifdef CONFIG_MAC80211_MESH
	case NL80211_IFTYPE_MESH_POINT:
		err = ieee80211_mesh_finish_csa(sdata);
		if (err < 0)
3081 3082
			return err;
		*changed |= err;
3083 3084
		break;
#endif
3085 3086
	default:
		WARN_ON(1);
3087 3088 3089 3090 3091 3092
		return -EINVAL;
	}

	return 0;
}

3093
static int __ieee80211_csa_finalize(struct ieee80211_sub_if_data *sdata)
3094 3095 3096 3097 3098 3099 3100 3101 3102 3103
{
	struct ieee80211_local *local = sdata->local;
	u32 changed = 0;
	int err;

	sdata_assert_lock(sdata);
	lockdep_assert_held(&local->mtx);

	sdata->radar_required = sdata->csa_radar_required;
	err = ieee80211_vif_change_channel(sdata, &changed);
3104 3105
	if (err < 0)
		return err;
3106 3107 3108 3109

	if (!local->use_chanctx) {
		local->_oper_chandef = sdata->csa_chandef;
		ieee80211_hw_config(local, 0);
3110
	}
3111

3112 3113 3114 3115
	sdata->vif.csa_active = false;

	err = ieee80211_set_after_csa_beacon(sdata, &changed);
	if (err)
3116
		return err;
3117

3118
	ieee80211_bss_info_change_notify(sdata, changed);
3119 3120 3121 3122
	cfg80211_ch_switch_notify(sdata->dev, &sdata->csa_chandef);

	if (!ieee80211_csa_needs_block_tx(local))
		ieee80211_wake_queues_by_reason(&local->hw,
3123 3124
					IEEE80211_MAX_QUEUE_MAP,
					IEEE80211_QUEUE_STOP_REASON_CSA);
3125 3126 3127 3128 3129 3130 3131 3132 3133 3134 3135

	return 0;
}

static void ieee80211_csa_finalize(struct ieee80211_sub_if_data *sdata)
{
	if (__ieee80211_csa_finalize(sdata)) {
		sdata_info(sdata, "failed to finalize CSA, disconnecting\n");
		cfg80211_stop_iface(sdata->local->hw.wiphy, &sdata->wdev,
				    GFP_KERNEL);
	}
3136 3137 3138 3139 3140 3141 3142
}

void ieee80211_csa_finalize_work(struct work_struct *work)
{
	struct ieee80211_sub_if_data *sdata =
		container_of(work, struct ieee80211_sub_if_data,
			     csa_finalize_work);
3143
	struct ieee80211_local *local = sdata->local;
3144 3145

	sdata_lock(sdata);
3146 3147
	mutex_lock(&local->mtx);

3148 3149 3150 3151 3152 3153 3154 3155
	/* AP might have been stopped while waiting for the lock. */
	if (!sdata->vif.csa_active)
		goto unlock;

	if (!ieee80211_sdata_running(sdata))
		goto unlock;

	ieee80211_csa_finalize(sdata);
3156 3157

unlock:
3158
	mutex_unlock(&local->mtx);
3159
	sdata_unlock(sdata);
3160 3161
}

3162 3163 3164
static int ieee80211_set_csa_beacon(struct ieee80211_sub_if_data *sdata,
				    struct cfg80211_csa_settings *params,
				    u32 *changed)
3165
{
3166
	int err;
3167 3168 3169

	switch (sdata->vif.type) {
	case NL80211_IFTYPE_AP:
3170 3171 3172 3173 3174
		sdata->u.ap.next_beacon =
			cfg80211_beacon_dup(&params->beacon_after);
		if (!sdata->u.ap.next_beacon)
			return -ENOMEM;

3175 3176 3177 3178 3179 3180 3181 3182 3183 3184 3185 3186 3187 3188 3189 3190 3191 3192 3193 3194 3195 3196
		/*
		 * With a count of 0, we don't have to wait for any
		 * TBTT before switching, so complete the CSA
		 * immediately.  In theory, with a count == 1 we
		 * should delay the switch until just before the next
		 * TBTT, but that would complicate things so we switch
		 * immediately too.  If we would delay the switch
		 * until the next TBTT, we would have to set the probe
		 * response here.
		 *
		 * TODO: A channel switch with count <= 1 without
		 * sending a CSA action frame is kind of useless,
		 * because the clients won't know we're changing
		 * channels.  The action frame must be implemented
		 * either here or in the userspace.
		 */
		if (params->count <= 1)
			break;

		sdata->csa_counter_offset_beacon =
			params->counter_offset_beacon;
		sdata->csa_counter_offset_presp = params->counter_offset_presp;
3197 3198 3199 3200 3201
		err = ieee80211_assign_beacon(sdata, &params->beacon_csa);
		if (err < 0) {
			kfree(sdata->u.ap.next_beacon);
			return err;
		}
3202
		*changed |= err;
3203

3204 3205 3206 3207 3208 3209 3210 3211 3212 3213 3214 3215 3216 3217 3218 3219 3220 3221 3222 3223 3224 3225 3226 3227 3228 3229 3230
		break;
	case NL80211_IFTYPE_ADHOC:
		if (!sdata->vif.bss_conf.ibss_joined)
			return -EINVAL;

		if (params->chandef.width != sdata->u.ibss.chandef.width)
			return -EINVAL;

		switch (params->chandef.width) {
		case NL80211_CHAN_WIDTH_40:
			if (cfg80211_get_chandef_type(&params->chandef) !=
			    cfg80211_get_chandef_type(&sdata->u.ibss.chandef))
				return -EINVAL;
		case NL80211_CHAN_WIDTH_5:
		case NL80211_CHAN_WIDTH_10:
		case NL80211_CHAN_WIDTH_20_NOHT:
		case NL80211_CHAN_WIDTH_20:
			break;
		default:
			return -EINVAL;
		}

		/* changes into another band are not supported */
		if (sdata->u.ibss.chandef.chan->band !=
		    params->chandef.chan->band)
			return -EINVAL;

3231 3232 3233 3234 3235
		/* see comments in the NL80211_IFTYPE_AP block */
		if (params->count > 1) {
			err = ieee80211_ibss_csa_beacon(sdata, params);
			if (err < 0)
				return err;
3236
			*changed |= err;
3237 3238 3239 3240
		}

		ieee80211_send_action_csa(sdata, params);

3241
		break;
3242
#ifdef CONFIG_MAC80211_MESH
3243 3244
	case NL80211_IFTYPE_MESH_POINT: {
		struct ieee80211_if_mesh *ifmsh = &sdata->u.mesh;
3245 3246 3247 3248 3249 3250 3251 3252 3253

		if (params->chandef.width != sdata->vif.bss_conf.chandef.width)
			return -EINVAL;

		/* changes into another band are not supported */
		if (sdata->vif.bss_conf.chandef.chan->band !=
		    params->chandef.chan->band)
			return -EINVAL;

3254
		if (ifmsh->csa_role == IEEE80211_MESH_CSA_ROLE_NONE) {
3255
			ifmsh->csa_role = IEEE80211_MESH_CSA_ROLE_INIT;
3256 3257 3258 3259 3260
			if (!ifmsh->pre_value)
				ifmsh->pre_value = 1;
			else
				ifmsh->pre_value++;
		}
3261

3262 3263 3264 3265 3266 3267 3268
		/* see comments in the NL80211_IFTYPE_AP block */
		if (params->count > 1) {
			err = ieee80211_mesh_csa_beacon(sdata, params);
			if (err < 0) {
				ifmsh->csa_role = IEEE80211_MESH_CSA_ROLE_NONE;
				return err;
			}
3269
			*changed |= err;
3270
		}
3271 3272 3273 3274

		if (ifmsh->csa_role == IEEE80211_MESH_CSA_ROLE_INIT)
			ieee80211_send_action_csa(sdata, params);

3275
		break;
3276
		}
3277
#endif
3278 3279 3280 3281
	default:
		return -EOPNOTSUPP;
	}

3282 3283 3284
	return 0;
}

3285 3286 3287
static int
__ieee80211_channel_switch(struct wiphy *wiphy, struct net_device *dev,
			   struct cfg80211_csa_settings *params)
3288 3289 3290
{
	struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
	struct ieee80211_local *local = sdata->local;
3291
	struct ieee80211_chanctx_conf *conf;
3292 3293 3294 3295
	struct ieee80211_chanctx *chanctx;
	int err, num_chanctx, changed = 0;

	sdata_assert_lock(sdata);
3296
	lockdep_assert_held(&local->mtx);
3297 3298 3299 3300 3301 3302 3303 3304 3305 3306 3307

	if (!list_empty(&local->roc_list) || local->scanning)
		return -EBUSY;

	if (sdata->wdev.cac_started)
		return -EBUSY;

	if (cfg80211_chandef_identical(&params->chandef,
				       &sdata->vif.bss_conf.chandef))
		return -EINVAL;

3308 3309 3310 3311 3312
	mutex_lock(&local->chanctx_mtx);
	conf = rcu_dereference_protected(sdata->vif.chanctx_conf,
					 lockdep_is_held(&local->chanctx_mtx));
	if (!conf) {
		mutex_unlock(&local->chanctx_mtx);
3313 3314 3315 3316
		return -EBUSY;
	}

	/* don't handle for multi-VIF cases */
3317
	chanctx = container_of(conf, struct ieee80211_chanctx, conf);
3318
	if (ieee80211_chanctx_refcount(local, chanctx) > 1) {
3319
		mutex_unlock(&local->chanctx_mtx);
3320 3321 3322 3323 3324
		return -EBUSY;
	}
	num_chanctx = 0;
	list_for_each_entry_rcu(chanctx, &local->chanctx_list, list)
		num_chanctx++;
3325
	mutex_unlock(&local->chanctx_mtx);
3326 3327 3328 3329 3330 3331 3332 3333 3334 3335 3336 3337

	if (num_chanctx > 1)
		return -EBUSY;

	/* don't allow another channel switch if one is already active. */
	if (sdata->vif.csa_active)
		return -EBUSY;

	err = ieee80211_set_csa_beacon(sdata, params, &changed);
	if (err)
		return err;

3338
	sdata->csa_radar_required = params->radar_required;
3339
	sdata->csa_chandef = params->chandef;
3340
	sdata->csa_block_tx = params->block_tx;
3341 3342
	sdata->vif.csa_active = true;

3343 3344 3345 3346 3347
	if (sdata->csa_block_tx)
		ieee80211_stop_queues_by_reason(&local->hw,
					IEEE80211_MAX_QUEUE_MAP,
					IEEE80211_QUEUE_STOP_REASON_CSA);

3348 3349 3350 3351 3352 3353 3354
	if (changed) {
		ieee80211_bss_info_change_notify(sdata, changed);
		drv_channel_switch_beacon(sdata, &params->chandef);
	} else {
		/* if the beacon didn't change, we can finalize immediately */
		ieee80211_csa_finalize(sdata);
	}
3355 3356 3357 3358

	return 0;
}

3359 3360 3361 3362 3363 3364 3365 3366 3367 3368 3369 3370 3371 3372
int ieee80211_channel_switch(struct wiphy *wiphy, struct net_device *dev,
			     struct cfg80211_csa_settings *params)
{
	struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
	struct ieee80211_local *local = sdata->local;
	int err;

	mutex_lock(&local->mtx);
	err = __ieee80211_channel_switch(wiphy, dev, params);
	mutex_unlock(&local->mtx);

	return err;
}

3373
static int ieee80211_mgmt_tx(struct wiphy *wiphy, struct wireless_dev *wdev,
3374 3375
			     struct cfg80211_mgmt_tx_params *params,
			     u64 *cookie)
3376
{
3377
	struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
3378 3379 3380
	struct ieee80211_local *local = sdata->local;
	struct sk_buff *skb;
	struct sta_info *sta;
3381
	const struct ieee80211_mgmt *mgmt = (void *)params->buf;
3382
	bool need_offchan = false;
3383
	u32 flags;
3384
	int ret;
3385

3386
	if (params->dont_wait_for_ack)
3387 3388 3389 3390 3391
		flags = IEEE80211_TX_CTL_NO_ACK;
	else
		flags = IEEE80211_TX_INTFL_NL80211_FRAME_TX |
			IEEE80211_TX_CTL_REQ_TX_STATUS;

3392
	if (params->no_cck)
3393 3394
		flags |= IEEE80211_TX_CTL_NO_CCK_RATE;

3395 3396
	switch (sdata->vif.type) {
	case NL80211_IFTYPE_ADHOC:
3397 3398 3399 3400 3401 3402 3403 3404 3405 3406
		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
3407 3408 3409
	case NL80211_IFTYPE_AP:
	case NL80211_IFTYPE_AP_VLAN:
	case NL80211_IFTYPE_P2P_GO:
3410 3411 3412 3413
		if (sdata->vif.type != NL80211_IFTYPE_ADHOC &&
		    !ieee80211_vif_is_mesh(&sdata->vif) &&
		    !rcu_access_pointer(sdata->bss->beacon))
			need_offchan = true;
3414
		if (!ieee80211_is_action(mgmt->frame_control) ||
3415
		    mgmt->u.action.category == WLAN_CATEGORY_PUBLIC ||
3416 3417
		    mgmt->u.action.category == WLAN_CATEGORY_SELF_PROTECTED ||
		    mgmt->u.action.category == WLAN_CATEGORY_SPECTRUM_MGMT)
3418 3419 3420 3421 3422 3423 3424 3425
			break;
		rcu_read_lock();
		sta = sta_info_get(sdata, mgmt->da);
		rcu_read_unlock();
		if (!sta)
			return -ENOLINK;
		break;
	case NL80211_IFTYPE_STATION:
3426
	case NL80211_IFTYPE_P2P_CLIENT:
3427 3428
		if (!sdata->u.mgd.associated)
			need_offchan = true;
3429
		break;
3430 3431 3432
	case NL80211_IFTYPE_P2P_DEVICE:
		need_offchan = true;
		break;
3433 3434 3435 3436
	default:
		return -EOPNOTSUPP;
	}

3437 3438 3439
	/* configurations requiring offchan cannot work if no channel has been
	 * specified
	 */
3440
	if (need_offchan && !params->chan)
3441 3442
		return -EINVAL;

3443 3444 3445 3446
	mutex_lock(&local->mtx);

	/* Check if the operating channel is the requested channel */
	if (!need_offchan) {
J
Johannes Berg 已提交
3447 3448 3449 3450 3451
		struct ieee80211_chanctx_conf *chanctx_conf;

		rcu_read_lock();
		chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf);

3452
		if (chanctx_conf) {
3453 3454 3455 3456
			need_offchan = params->chan &&
				       (params->chan !=
					chanctx_conf->def.chan);
		} else if (!params->chan) {
3457 3458 3459 3460
			ret = -EINVAL;
			rcu_read_unlock();
			goto out_unlock;
		} else {
3461
			need_offchan = true;
3462
		}
J
Johannes Berg 已提交
3463
		rcu_read_unlock();
3464 3465
	}

3466
	if (need_offchan && !params->offchan) {
3467 3468 3469 3470
		ret = -EBUSY;
		goto out_unlock;
	}

3471
	skb = dev_alloc_skb(local->hw.extra_tx_headroom + params->len);
3472 3473 3474 3475
	if (!skb) {
		ret = -ENOMEM;
		goto out_unlock;
	}
3476 3477
	skb_reserve(skb, local->hw.extra_tx_headroom);

3478
	memcpy(skb_put(skb, params->len), params->buf, params->len);
3479 3480 3481 3482 3483

	IEEE80211_SKB_CB(skb)->flags = flags;

	skb->dev = sdata->dev;

3484
	if (!need_offchan) {
3485
		*cookie = (unsigned long) skb;
3486
		ieee80211_tx_skb(sdata, skb);
3487 3488
		ret = 0;
		goto out_unlock;
3489 3490
	}

3491 3492
	IEEE80211_SKB_CB(skb)->flags |= IEEE80211_TX_CTL_TX_OFFCHAN |
					IEEE80211_TX_INTFL_OFFCHAN_TX_OK;
3493 3494 3495
	if (local->hw.flags & IEEE80211_HW_QUEUE_CONTROL)
		IEEE80211_SKB_CB(skb)->hw_queue =
			local->hw.offchannel_tx_hw_queue;
3496

3497
	/* This will handle all kinds of coalescing and immediate TX */
3498 3499
	ret = ieee80211_start_roc_work(local, sdata, params->chan,
				       params->wait, cookie, skb,
3500
				       IEEE80211_ROC_TYPE_MGMT_TX);
3501 3502 3503 3504 3505
	if (ret)
		kfree_skb(skb);
 out_unlock:
	mutex_unlock(&local->mtx);
	return ret;
3506 3507
}

3508
static int ieee80211_mgmt_tx_cancel_wait(struct wiphy *wiphy,
3509
					 struct wireless_dev *wdev,
3510 3511
					 u64 cookie)
{
3512
	struct ieee80211_local *local = wiphy_priv(wiphy);
3513

3514
	return ieee80211_cancel_roc(local, cookie, true);
3515 3516
}

3517
static void ieee80211_mgmt_frame_register(struct wiphy *wiphy,
3518
					  struct wireless_dev *wdev,
3519 3520 3521 3522
					  u16 frame_type, bool reg)
{
	struct ieee80211_local *local = wiphy_priv(wiphy);

3523 3524 3525 3526 3527 3528
	switch (frame_type) {
	case IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_PROBE_REQ:
		if (reg)
			local->probe_req_reg++;
		else
			local->probe_req_reg--;
3529

3530 3531 3532
		if (!local->open_count)
			break;

3533 3534 3535 3536 3537
		ieee80211_queue_work(&local->hw, &local->reconfig_filter);
		break;
	default:
		break;
	}
3538 3539
}

3540 3541 3542 3543 3544 3545 3546 3547 3548 3549 3550 3551 3552 3553 3554 3555 3556
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);
}

3557 3558 3559 3560 3561 3562 3563 3564 3565 3566 3567 3568 3569 3570 3571
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);
}

3572 3573 3574 3575 3576 3577 3578 3579 3580 3581 3582 3583 3584 3585 3586
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;
}

J
Johannes Berg 已提交
3587 3588 3589 3590 3591 3592 3593 3594 3595 3596 3597 3598
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;
J
Johannes Berg 已提交
3599 3600
	struct ieee80211_chanctx_conf *chanctx_conf;
	enum ieee80211_band band;
J
Johannes Berg 已提交
3601 3602

	rcu_read_lock();
J
Johannes Berg 已提交
3603 3604 3605 3606 3607
	chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf);
	if (WARN_ON(!chanctx_conf)) {
		rcu_read_unlock();
		return -EINVAL;
	}
3608
	band = chanctx_conf->def.chan->band;
3609
	sta = sta_info_get_bss(sdata, peer);
3610
	if (sta) {
J
Johannes Berg 已提交
3611
		qos = test_sta_flag(sta, WLAN_STA_WME);
3612 3613
	} else {
		rcu_read_unlock();
J
Johannes Berg 已提交
3614
		return -ENOLINK;
3615
	}
J
Johannes Berg 已提交
3616 3617 3618 3619 3620 3621 3622 3623 3624 3625 3626 3627 3628

	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);
J
Johannes Berg 已提交
3629 3630
	if (!skb) {
		rcu_read_unlock();
J
Johannes Berg 已提交
3631
		return -ENOMEM;
J
Johannes Berg 已提交
3632
	}
J
Johannes Berg 已提交
3633 3634 3635 3636 3637 3638 3639 3640 3641 3642 3643 3644 3645 3646 3647 3648 3649 3650 3651 3652 3653 3654 3655 3656

	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();
J
Johannes Berg 已提交
3657
	ieee80211_xmit(sdata, skb, band);
J
Johannes Berg 已提交
3658
	local_bh_enable();
J
Johannes Berg 已提交
3659
	rcu_read_unlock();
J
Johannes Berg 已提交
3660 3661 3662 3663 3664

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

3665 3666 3667
static int ieee80211_cfg_get_channel(struct wiphy *wiphy,
				     struct wireless_dev *wdev,
				     struct cfg80211_chan_def *chandef)
3668
{
J
Johannes Berg 已提交
3669
	struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
3670
	struct ieee80211_local *local = wiphy_priv(wiphy);
J
Johannes Berg 已提交
3671
	struct ieee80211_chanctx_conf *chanctx_conf;
3672
	int ret = -ENODATA;
J
Johannes Berg 已提交
3673 3674

	rcu_read_lock();
3675 3676 3677 3678 3679 3680 3681 3682 3683 3684
	chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf);
	if (chanctx_conf) {
		*chandef = chanctx_conf->def;
		ret = 0;
	} else if (local->open_count > 0 &&
		   local->open_count == local->monitors &&
		   sdata->vif.type == NL80211_IFTYPE_MONITOR) {
		if (local->use_chanctx)
			*chandef = local->monitor_chandef;
		else
3685
			*chandef = local->_oper_chandef;
3686
		ret = 0;
J
Johannes Berg 已提交
3687 3688
	}
	rcu_read_unlock();
3689

3690
	return ret;
3691 3692
}

3693 3694 3695 3696 3697 3698 3699
#ifdef CONFIG_PM
static void ieee80211_set_wakeup(struct wiphy *wiphy, bool enabled)
{
	drv_set_wakeup(wiphy_priv(wiphy), enabled);
}
#endif

3700 3701 3702 3703 3704 3705 3706 3707 3708 3709 3710 3711 3712 3713 3714 3715 3716
static int ieee80211_set_qos_map(struct wiphy *wiphy,
				 struct net_device *dev,
				 struct cfg80211_qos_map *qos_map)
{
	struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
	struct mac80211_qos_map *new_qos_map, *old_qos_map;

	if (qos_map) {
		new_qos_map = kzalloc(sizeof(*new_qos_map), GFP_KERNEL);
		if (!new_qos_map)
			return -ENOMEM;
		memcpy(&new_qos_map->qos_map, qos_map, sizeof(*qos_map));
	} else {
		/* A NULL qos_map was passed to disable QoS mapping */
		new_qos_map = NULL;
	}

3717
	old_qos_map = sdata_dereference(sdata->qos_map, sdata);
3718 3719 3720 3721 3722 3723 3724
	rcu_assign_pointer(sdata->qos_map, new_qos_map);
	if (old_qos_map)
		kfree_rcu(old_qos_map, rcu_head);

	return 0;
}

3725 3726 3727 3728 3729 3730 3731 3732 3733 3734 3735 3736 3737 3738 3739
static int ieee80211_set_ap_chanwidth(struct wiphy *wiphy,
				      struct net_device *dev,
				      struct cfg80211_chan_def *chandef)
{
	struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
	int ret;
	u32 changed = 0;

	ret = ieee80211_vif_change_bandwidth(sdata, chandef, &changed);
	if (ret == 0)
		ieee80211_bss_info_change_notify(sdata, changed);

	return ret;
}

3740
const struct cfg80211_ops mac80211_config_ops = {
3741 3742
	.add_virtual_intf = ieee80211_add_iface,
	.del_virtual_intf = ieee80211_del_iface,
3743
	.change_virtual_intf = ieee80211_change_iface,
3744 3745
	.start_p2p_device = ieee80211_start_p2p_device,
	.stop_p2p_device = ieee80211_stop_p2p_device,
3746 3747
	.add_key = ieee80211_add_key,
	.del_key = ieee80211_del_key,
3748
	.get_key = ieee80211_get_key,
3749
	.set_default_key = ieee80211_config_default_key,
3750
	.set_default_mgmt_key = ieee80211_config_default_mgmt_key,
3751 3752 3753
	.start_ap = ieee80211_start_ap,
	.change_beacon = ieee80211_change_beacon,
	.stop_ap = ieee80211_stop_ap,
3754 3755 3756
	.add_station = ieee80211_add_station,
	.del_station = ieee80211_del_station,
	.change_station = ieee80211_change_station,
3757
	.get_station = ieee80211_get_station,
3758
	.dump_station = ieee80211_dump_station,
3759
	.dump_survey = ieee80211_dump_survey,
3760 3761 3762 3763 3764 3765
#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,
3766 3767
	.update_mesh_config = ieee80211_update_mesh_config,
	.get_mesh_config = ieee80211_get_mesh_config,
3768 3769
	.join_mesh = ieee80211_join_mesh,
	.leave_mesh = ieee80211_leave_mesh,
3770
#endif
3771
	.change_bss = ieee80211_change_bss,
3772
	.set_txq_params = ieee80211_set_txq_params,
3773
	.set_monitor_channel = ieee80211_set_monitor_channel,
3774 3775
	.suspend = ieee80211_suspend,
	.resume = ieee80211_resume,
3776
	.scan = ieee80211_scan,
3777 3778
	.sched_scan_start = ieee80211_sched_scan_start,
	.sched_scan_stop = ieee80211_sched_scan_stop,
3779 3780 3781 3782
	.auth = ieee80211_auth,
	.assoc = ieee80211_assoc,
	.deauth = ieee80211_deauth,
	.disassoc = ieee80211_disassoc,
3783 3784
	.join_ibss = ieee80211_join_ibss,
	.leave_ibss = ieee80211_leave_ibss,
3785
	.set_mcast_rate = ieee80211_set_mcast_rate,
3786
	.set_wiphy_params = ieee80211_set_wiphy_params,
3787 3788
	.set_tx_power = ieee80211_set_tx_power,
	.get_tx_power = ieee80211_get_tx_power,
J
Johannes Berg 已提交
3789
	.set_wds_peer = ieee80211_set_wds_peer,
J
Johannes Berg 已提交
3790
	.rfkill_poll = ieee80211_rfkill_poll,
3791
	CFG80211_TESTMODE_CMD(ieee80211_testmode_cmd)
W
Wey-Yi Guy 已提交
3792
	CFG80211_TESTMODE_DUMP(ieee80211_testmode_dump)
J
Johannes Berg 已提交
3793
	.set_power_mgmt = ieee80211_set_power_mgmt,
J
Johannes Berg 已提交
3794
	.set_bitrate_mask = ieee80211_set_bitrate_mask,
3795 3796
	.remain_on_channel = ieee80211_remain_on_channel,
	.cancel_remain_on_channel = ieee80211_cancel_remain_on_channel,
3797
	.mgmt_tx = ieee80211_mgmt_tx,
3798
	.mgmt_tx_cancel_wait = ieee80211_mgmt_tx_cancel_wait,
3799
	.set_cqm_rssi_config = ieee80211_set_cqm_rssi_config,
3800
	.mgmt_frame_register = ieee80211_mgmt_frame_register,
3801 3802
	.set_antenna = ieee80211_set_antenna,
	.get_antenna = ieee80211_get_antenna,
3803 3804
	.set_ringparam = ieee80211_set_ringparam,
	.get_ringparam = ieee80211_get_ringparam,
3805
	.set_rekey_data = ieee80211_set_rekey_data,
3806 3807
	.tdls_oper = ieee80211_tdls_oper,
	.tdls_mgmt = ieee80211_tdls_mgmt,
J
Johannes Berg 已提交
3808
	.probe_client = ieee80211_probe_client,
3809
	.set_noack_map = ieee80211_set_noack_map,
3810 3811 3812
#ifdef CONFIG_PM
	.set_wakeup = ieee80211_set_wakeup,
#endif
3813 3814 3815
	.get_et_sset_count = ieee80211_get_et_sset_count,
	.get_et_stats = ieee80211_get_et_stats,
	.get_et_strings = ieee80211_get_et_strings,
3816
	.get_channel = ieee80211_cfg_get_channel,
3817
	.start_radar_detection = ieee80211_start_radar_detection,
3818
	.channel_switch = ieee80211_channel_switch,
3819
	.set_qos_map = ieee80211_set_qos_map,
3820
	.set_ap_chanwidth = ieee80211_set_ap_chanwidth,
3821
};