cfg.c 102.3 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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 * Copyright 2013-2015  Intel Mobile Communications GmbH
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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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#include "wme.h"
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static struct wireless_dev *ieee80211_add_iface(struct wiphy *wiphy,
						const char *name,
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						unsigned char name_assign_type,
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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, name_assign_type, &wdev, type, params);
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	if (err)
		return ERR_PTR(err);
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	if (type == NL80211_IFTYPE_MONITOR && flags) {
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		sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
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		sdata->u.mntr_flags = *flags;
	}

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	return wdev;
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}

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static int ieee80211_del_iface(struct wiphy *wiphy, struct wireless_dev *wdev)
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{
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	ieee80211_if_remove(IEEE80211_WDEV_TO_SUB_IF(wdev));
52

53
	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;
63

64
	ret = ieee80211_if_change_type(sdata, type);
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	if (ret)
		return ret;
67

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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;
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	ieee80211_check_fast_xmit_iface(sdata);

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	return 0;
}

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static int ieee80211_add_key(struct wiphy *wiphy, struct net_device *dev,
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			     u8 key_idx, bool pairwise, const u8 *mac_addr,
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			     struct key_params *params)
{
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	struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
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	struct 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;
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	int err;
156

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	if (!ieee80211_sdata_running(sdata))
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		return -ENETDOWN;

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	/* reject WEP and TKIP keys if WEP failed to initialize */
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	switch (params->cipher) {
	case WLAN_CIPHER_SUITE_WEP40:
	case WLAN_CIPHER_SUITE_TKIP:
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	case WLAN_CIPHER_SUITE_WEP104:
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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:
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	case WLAN_CIPHER_SUITE_CCMP_256:
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	case WLAN_CIPHER_SUITE_AES_CMAC:
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	case WLAN_CIPHER_SUITE_BIP_CMAC_256:
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	case WLAN_CIPHER_SUITE_BIP_GMAC_128:
	case WLAN_CIPHER_SUITE_BIP_GMAC_256:
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	case WLAN_CIPHER_SUITE_GCMP:
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	case WLAN_CIPHER_SUITE_GCMP_256:
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		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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	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
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		 * so it will set the key again after association.
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		 *
		 * 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:
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	case NL80211_IFTYPE_OCB:
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		/* 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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	struct ieee80211_key_seq kseq = {};
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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 &&
		    !(key->conf.flags & IEEE80211_KEY_FLAG_GENERATE_IV)) {
			drv_get_key_seq(sdata->local, key, &kseq);
			iv32 = kseq.tkip.iv32;
			iv16 = kseq.tkip.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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	case WLAN_CIPHER_SUITE_CCMP_256:
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	case WLAN_CIPHER_SUITE_AES_CMAC:
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	case WLAN_CIPHER_SUITE_BIP_CMAC_256:
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		BUILD_BUG_ON(offsetof(typeof(kseq), ccmp) !=
			     offsetof(typeof(kseq), aes_cmac));
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	case WLAN_CIPHER_SUITE_BIP_GMAC_128:
	case WLAN_CIPHER_SUITE_BIP_GMAC_256:
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		BUILD_BUG_ON(offsetof(typeof(kseq), ccmp) !=
			     offsetof(typeof(kseq), aes_gmac));
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	case WLAN_CIPHER_SUITE_GCMP:
	case WLAN_CIPHER_SUITE_GCMP_256:
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		BUILD_BUG_ON(offsetof(typeof(kseq), ccmp) !=
			     offsetof(typeof(kseq), gcmp));

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		if (key->flags & KEY_FLAG_UPLOADED_TO_HARDWARE &&
		    !(key->conf.flags & IEEE80211_KEY_FLAG_GENERATE_IV)) {
			drv_get_key_seq(sdata->local, key, &kseq);
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			memcpy(seq, kseq.ccmp.pn, 6);
381
		} else {
382
			pn64 = atomic64_read(&key->conf.tx_pn);
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			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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	default:
		if (!(key->flags & KEY_FLAG_UPLOADED_TO_HARDWARE))
			break;
		if (WARN_ON(key->conf.flags & IEEE80211_KEY_FLAG_GENERATE_IV))
			break;
		drv_get_key_seq(sdata->local, key, &kseq);
		params.seq = kseq.hw.seq;
		params.seq_len = kseq.hw.seq_len;
		break;
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	}

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

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

 out:
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	rcu_read_unlock();
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	return err;
}

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static int ieee80211_config_default_key(struct wiphy *wiphy,
					struct net_device *dev,
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					u8 key_idx, bool uni,
					bool multi)
419
{
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	struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
421

422
	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)
{
431
	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;
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	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);
459
	}
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	if (rate->flags & IEEE80211_TX_RC_40_MHZ_WIDTH)
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		rinfo->bw = RATE_INFO_BW_40;
	else if (rate->flags & IEEE80211_TX_RC_80_MHZ_WIDTH)
		rinfo->bw = RATE_INFO_BW_80;
	else if (rate->flags & IEEE80211_TX_RC_160_MHZ_WIDTH)
		rinfo->bw = RATE_INFO_BW_160;
	else
		rinfo->bw = RATE_INFO_BW_20;
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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_SHORT_GI)
		rinfo->flags |= RATE_INFO_FLAGS_SHORT_GI;
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	if (sta->last_rx_rate_flag & RX_FLAG_5MHZ)
		rinfo->bw = RATE_INFO_BW_5;
	else if (sta->last_rx_rate_flag & RX_FLAG_10MHZ)
		rinfo->bw = RATE_INFO_BW_10;
	else if (sta->last_rx_rate_flag & RX_FLAG_40MHZ)
		rinfo->bw = RATE_INFO_BW_40;
	else if (sta->last_rx_rate_vht_flag & RX_VHT_FLAG_80MHZ)
		rinfo->bw = RATE_INFO_BW_80;
	else if (sta->last_rx_rate_vht_flag & RX_VHT_FLAG_160MHZ)
		rinfo->bw = RATE_INFO_BW_160;
	else
		rinfo->bw = RATE_INFO_BW_20;
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}

511
static int ieee80211_dump_station(struct wiphy *wiphy, struct net_device *dev,
512
				  int idx, u8 *mac, struct station_info *sinfo)
513
{
514
	struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
515
	struct ieee80211_local *local = sdata->local;
516
	struct sta_info *sta;
517 518
	int ret = -ENOENT;

519
	mutex_lock(&local->sta_mtx);
520

521
	sta = sta_info_get_by_idx(sdata, idx);
522 523
	if (sta) {
		ret = 0;
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		memcpy(mac, sta->sta.addr, ETH_ALEN);
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		sta_set_sinfo(sta, sinfo);
	}
527

528
	mutex_unlock(&local->sta_mtx);
529

530
	return ret;
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}

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

	return drv_get_survey(local, idx, survey);
}

541
static int ieee80211_get_station(struct wiphy *wiphy, struct net_device *dev,
542
				 const u8 *mac, struct station_info *sinfo)
543
{
544
	struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
545
	struct ieee80211_local *local = sdata->local;
546
	struct sta_info *sta;
547
	int ret = -ENOENT;
548

549
	mutex_lock(&local->sta_mtx);
550

551
	sta = sta_info_get_bss(sdata, mac);
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	if (sta) {
		ret = 0;
		sta_set_sinfo(sta, sinfo);
	}

557
	mutex_unlock(&local->sta_mtx);
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	return ret;
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}

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static int ieee80211_set_monitor_channel(struct wiphy *wiphy,
563
					 struct cfg80211_chan_def *chandef)
564 565
{
	struct ieee80211_local *local = wiphy_priv(wiphy);
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566 567
	struct ieee80211_sub_if_data *sdata;
	int ret = 0;
568

569
	if (cfg80211_chandef_identical(&local->monitor_chandef, chandef))
J
Johannes Berg 已提交
570
		return 0;
571

572
	mutex_lock(&local->mtx);
J
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573 574 575 576 577 578 579
	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);
580
			ret = ieee80211_vif_use_channel(sdata, chandef,
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581 582 583
					IEEE80211_CHANCTX_EXCLUSIVE);
		}
	} else if (local->open_count == local->monitors) {
584
		local->_oper_chandef = *chandef;
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585 586
		ieee80211_hw_config(local, 0);
	}
587

588 589
	if (ret == 0)
		local->monitor_chandef = *chandef;
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590
	mutex_unlock(&local->iflist_mtx);
591
	mutex_unlock(&local->mtx);
592

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593
	return ret;
594 595
}

596
static int ieee80211_set_probe_resp(struct ieee80211_sub_if_data *sdata,
597 598
				    const u8 *resp, size_t resp_len,
				    const struct ieee80211_csa_settings *csa)
599
{
600
	struct probe_resp *new, *old;
601 602

	if (!resp || !resp_len)
603
		return 1;
604

605
	old = sdata_dereference(sdata->u.ap.probe_resp, sdata);
606

607
	new = kzalloc(sizeof(struct probe_resp) + resp_len, GFP_KERNEL);
608 609 610
	if (!new)
		return -ENOMEM;

611 612
	new->len = resp_len;
	memcpy(new->data, resp, resp_len);
613

614 615 616 617 618
	if (csa)
		memcpy(new->csa_counter_offsets, csa->counter_offsets_presp,
		       csa->n_counter_offsets_presp *
		       sizeof(new->csa_counter_offsets[0]));

619
	rcu_assign_pointer(sdata->u.ap.probe_resp, new);
620 621
	if (old)
		kfree_rcu(old, rcu_head);
622 623 624 625

	return 0;
}

626
static int ieee80211_assign_beacon(struct ieee80211_sub_if_data *sdata,
627 628
				   struct cfg80211_beacon_data *params,
				   const struct ieee80211_csa_settings *csa)
629 630 631
{
	struct beacon_data *new, *old;
	int new_head_len, new_tail_len;
632 633
	int size, err;
	u32 changed = BSS_CHANGED_BEACON;
634

635 636
	old = sdata_dereference(sdata->u.ap.beacon, sdata);

637 638 639

	/* Need to have a beacon head if we don't have one yet */
	if (!params->head && !old)
640
		return -EINVAL;
641 642 643 644 645 646 647 648 649 650 651 652 653 654 655 656 657 658 659 660 661 662 663 664 665 666 667 668 669 670 671

	/* 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;

672 673 674 675 676 677 678
	if (csa) {
		new->csa_current_counter = csa->count;
		memcpy(new->csa_counter_offsets, csa->counter_offsets_beacon,
		       csa->n_counter_offsets_beacon *
		       sizeof(new->csa_counter_offsets[0]));
	}

679 680 681 682 683 684 685 686 687 688 689 690 691
	/* 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);

692
	err = ieee80211_set_probe_resp(sdata, params->probe_resp,
693
				       params->probe_resp_len, csa);
694 695 696
	if (err < 0)
		return err;
	if (err == 0)
697 698
		changed |= BSS_CHANGED_AP_PROBE_RESP;

699 700 701 702
	rcu_assign_pointer(sdata->u.ap.beacon, new);

	if (old)
		kfree_rcu(old, rcu_head);
703

704
	return changed;
705 706
}

707 708
static int ieee80211_start_ap(struct wiphy *wiphy, struct net_device *dev,
			      struct cfg80211_ap_settings *params)
709
{
710
	struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
711
	struct ieee80211_local *local = sdata->local;
712
	struct beacon_data *old;
713
	struct ieee80211_sub_if_data *vlan;
714 715 716
	u32 changed = BSS_CHANGED_BEACON_INT |
		      BSS_CHANGED_BEACON_ENABLED |
		      BSS_CHANGED_BEACON |
717
		      BSS_CHANGED_SSID |
718 719
		      BSS_CHANGED_P2P_PS |
		      BSS_CHANGED_TXPOWER;
720
	int err;
721

722
	old = sdata_dereference(sdata->u.ap.beacon, sdata);
723 724 725
	if (old)
		return -EALREADY;

726 727 728 729 730 731 732 733 734 735 736 737 738
	switch (params->smps_mode) {
	case NL80211_SMPS_OFF:
		sdata->smps_mode = IEEE80211_SMPS_OFF;
		break;
	case NL80211_SMPS_STATIC:
		sdata->smps_mode = IEEE80211_SMPS_STATIC;
		break;
	case NL80211_SMPS_DYNAMIC:
		sdata->smps_mode = IEEE80211_SMPS_DYNAMIC;
		break;
	default:
		return -EINVAL;
	}
739 740
	sdata->needed_rx_chains = sdata->local->rx_chains;

741
	mutex_lock(&local->mtx);
742
	err = ieee80211_vif_use_channel(sdata, &params->chandef,
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743
					IEEE80211_CHANCTX_SHARED);
744 745
	if (!err)
		ieee80211_vif_copy_chanctx_to_vlans(sdata, false);
746
	mutex_unlock(&local->mtx);
747 748 749
	if (err)
		return err;

750 751 752 753 754 755
	/*
	 * 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;
756 757 758 759
	sdata->encrypt_headroom = ieee80211_cs_headroom(sdata->local,
							&params->crypto,
							sdata->vif.type);

760 761 762 763 764
	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;
765 766 767 768
		vlan->encrypt_headroom =
			ieee80211_cs_headroom(sdata->local,
					      &params->crypto,
					      vlan->vif.type);
769 770
	}

771 772
	sdata->vif.bss_conf.beacon_int = params->beacon_interval;
	sdata->vif.bss_conf.dtim_period = params->dtim_period;
773
	sdata->vif.bss_conf.enable_beacon = true;
774 775 776 777 778 779 780 781

	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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	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;
789

790
	err = ieee80211_assign_beacon(sdata, &params->beacon, NULL);
791 792
	if (err < 0) {
		ieee80211_vif_release_channel(sdata);
793
		return err;
794
	}
795 796
	changed |= err;

797 798
	err = drv_start_ap(sdata->local, sdata);
	if (err) {
799 800
		old = sdata_dereference(sdata->u.ap.beacon, sdata);

801 802 803
		if (old)
			kfree_rcu(old, rcu_head);
		RCU_INIT_POINTER(sdata->u.ap.beacon, NULL);
804
		ieee80211_vif_release_channel(sdata);
805 806 807
		return err;
	}

808
	ieee80211_recalc_dtim(local, sdata);
809 810
	ieee80211_bss_info_change_notify(sdata, changed);

811 812 813 814
	netif_carrier_on(dev);
	list_for_each_entry(vlan, &sdata->u.ap.vlans, u.vlan.list)
		netif_carrier_on(vlan->dev);

815
	return 0;
816 817
}

818 819
static int ieee80211_change_beacon(struct wiphy *wiphy, struct net_device *dev,
				   struct cfg80211_beacon_data *params)
820
{
821
	struct ieee80211_sub_if_data *sdata;
822
	struct beacon_data *old;
823
	int err;
824

825
	sdata = IEEE80211_DEV_TO_SUB_IF(dev);
826
	sdata_assert_lock(sdata);
827

828 829 830 831 832 833
	/* 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;

834
	old = sdata_dereference(sdata->u.ap.beacon, sdata);
835 836 837
	if (!old)
		return -ENOENT;

838
	err = ieee80211_assign_beacon(sdata, params, NULL);
839 840 841 842
	if (err < 0)
		return err;
	ieee80211_bss_info_change_notify(sdata, err);
	return 0;
843 844
}

845
static int ieee80211_stop_ap(struct wiphy *wiphy, struct net_device *dev)
846
{
847 848 849 850 851
	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;
852
	struct cfg80211_chan_def chandef;
853

854 855
	sdata_assert_lock(sdata);

856
	old_beacon = sdata_dereference(sdata->u.ap.beacon, sdata);
857
	if (!old_beacon)
858
		return -ENOENT;
859
	old_probe_resp = sdata_dereference(sdata->u.ap.probe_resp, sdata);
860

861
	/* abort any running channel switch */
862
	mutex_lock(&local->mtx);
863
	sdata->vif.csa_active = false;
864 865 866 867 868 869
	if (sdata->csa_block_tx) {
		ieee80211_wake_vif_queues(local, sdata,
					  IEEE80211_QUEUE_STOP_REASON_CSA);
		sdata->csa_block_tx = false;
	}

870 871
	mutex_unlock(&local->mtx);

872 873 874
	kfree(sdata->u.ap.next_beacon);
	sdata->u.ap.next_beacon = NULL;

875
	/* turn off carrier for this interface and dependent VLANs */
876 877 878 879
	list_for_each_entry(vlan, &sdata->u.ap.vlans, u.vlan.list)
		netif_carrier_off(vlan->dev);
	netif_carrier_off(dev);

880
	/* remove beacon and probe response */
881
	RCU_INIT_POINTER(sdata->u.ap.beacon, NULL);
882 883 884 885
	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);
886
	sdata->u.ap.driver_smps_mode = IEEE80211_SMPS_OFF;
887

888
	__sta_info_flush(sdata, true);
889
	ieee80211_free_keys(sdata, true);
890

891
	sdata->vif.bss_conf.enable_beacon = false;
892
	sdata->vif.bss_conf.ssid_len = 0;
893
	clear_bit(SDATA_STATE_OFFCHANNEL_BEACON_STOPPED, &sdata->state);
894
	ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_BEACON_ENABLED);
895

896
	if (sdata->wdev.cac_started) {
897
		chandef = sdata->vif.bss_conf.chandef;
898
		cancel_delayed_work_sync(&sdata->dfs_cac_timer_work);
899 900
		cfg80211_cac_event(sdata->dev, &chandef,
				   NL80211_RADAR_CAC_ABORTED,
901 902 903
				   GFP_KERNEL);
	}

904 905
	drv_stop_ap(sdata->local, sdata);

906 907 908 909
	/* 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);

910
	mutex_lock(&local->mtx);
911
	ieee80211_vif_copy_chanctx_to_vlans(sdata, true);
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Johannes Berg 已提交
912
	ieee80211_vif_release_channel(sdata);
913
	mutex_unlock(&local->mtx);
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914

915
	return 0;
916 917
}

918 919 920 921 922 923 924 925 926
/* 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
927
} __packed;
928 929 930 931 932 933 934 935 936 937 938 939 940 941 942 943 944

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 */

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Johannes Berg 已提交
945
	eth_broadcast_addr(msg->da);
946
	memcpy(msg->sa, sta->sta.addr, ETH_ALEN);
947 948 949 950 951 952 953 954 955
	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) */

956 957
	skb->dev = sta->sdata->dev;
	skb->protocol = eth_type_trans(skb, sta->sdata->dev);
958
	memset(skb->cb, 0, sizeof(skb->cb));
959
	netif_rx_ni(skb);
960 961
}

962 963 964 965 966 967 968 969 970 971 972 973 974 975 976 977 978
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)) {
979 980 981 982 983 984 985 986
		/*
		 * When peer becomes associated, init rate control as
		 * well. Some drivers require rate control initialized
		 * before drv_sta_state() is called.
		 */
		if (test_sta_flag(sta, WLAN_STA_TDLS_PEER))
			rate_control_rate_init(sta);

987 988 989 990 991 992 993 994 995 996 997 998 999 1000 1001 1002 1003 1004 1005 1006 1007 1008 1009 1010 1011 1012 1013 1014 1015 1016 1017 1018 1019 1020 1021
		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;
}

1022 1023 1024 1025 1026 1027 1028 1029 1030 1031 1032 1033 1034 1035 1036 1037 1038 1039 1040 1041 1042 1043 1044 1045 1046 1047 1048 1049 1050 1051 1052 1053 1054 1055 1056 1057 1058 1059 1060 1061 1062 1063 1064 1065 1066 1067 1068 1069 1070 1071 1072 1073 1074 1075 1076 1077 1078 1079 1080
static void sta_apply_mesh_params(struct ieee80211_local *local,
				  struct sta_info *sta,
				  struct station_parameters *params)
{
#ifdef CONFIG_MAC80211_MESH
	struct ieee80211_sub_if_data *sdata = sta->sdata;
	u32 changed = 0;

	if (params->sta_modify_mask & STATION_PARAM_APPLY_PLINK_STATE) {
		switch (params->plink_state) {
		case NL80211_PLINK_ESTAB:
			if (sta->mesh->plink_state != NL80211_PLINK_ESTAB)
				changed = mesh_plink_inc_estab_count(sdata);
			sta->mesh->plink_state = params->plink_state;

			ieee80211_mps_sta_status_update(sta);
			changed |= ieee80211_mps_set_sta_local_pm(sta,
				      sdata->u.mesh.mshcfg.power_mode);
			break;
		case NL80211_PLINK_LISTEN:
		case NL80211_PLINK_BLOCKED:
		case NL80211_PLINK_OPN_SNT:
		case NL80211_PLINK_OPN_RCVD:
		case NL80211_PLINK_CNF_RCVD:
		case NL80211_PLINK_HOLDING:
			if (sta->mesh->plink_state == NL80211_PLINK_ESTAB)
				changed = mesh_plink_dec_estab_count(sdata);
			sta->mesh->plink_state = params->plink_state;

			ieee80211_mps_sta_status_update(sta);
			changed |= ieee80211_mps_set_sta_local_pm(sta,
					NL80211_MESH_POWER_UNKNOWN);
			break;
		default:
			/*  nothing  */
			break;
		}
	}

	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;
	}

	if (params->local_pm)
		changed |= ieee80211_mps_set_sta_local_pm(sta,
							  params->local_pm);

	ieee80211_mbss_info_change_notify(sdata, changed);
#endif
}

1081 1082 1083
static int sta_apply_parameters(struct ieee80211_local *local,
				struct sta_info *sta,
				struct station_parameters *params)
1084
{
1085
	int ret = 0;
1086
	struct ieee80211_supported_band *sband;
1087
	struct ieee80211_sub_if_data *sdata = sta->sdata;
J
Johannes Berg 已提交
1088
	enum ieee80211_band band = ieee80211_get_sdata_band(sdata);
1089
	u32 mask, set;
1090

J
Johannes Berg 已提交
1091
	sband = local->hw.wiphy->bands[band];
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Johannes Berg 已提交
1092

1093 1094
	mask = params->sta_flags_mask;
	set = params->sta_flags_set;
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Johannes Berg 已提交
1095

1096 1097 1098 1099 1100 1101 1102 1103 1104
	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);
1105 1106 1107 1108 1109 1110 1111 1112 1113 1114 1115 1116
	} 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);
		}
1117
	}
1118

1119 1120 1121 1122
	if (mask & BIT(NL80211_STA_FLAG_WME) &&
	    local->hw.queues >= IEEE80211_NUM_ACS)
		sta->sta.wme = set & BIT(NL80211_STA_FLAG_WME);

1123 1124 1125 1126 1127 1128
	/* auth flags will be set later for TDLS stations */
	if (!test_sta_flag(sta, WLAN_STA_TDLS_PEER)) {
		ret = sta_apply_auth_flags(local, sta, mask, set);
		if (ret)
			return ret;
	}
1129

1130 1131
	if (mask & BIT(NL80211_STA_FLAG_SHORT_PREAMBLE)) {
		if (set & BIT(NL80211_STA_FLAG_SHORT_PREAMBLE))
J
Johannes Berg 已提交
1132 1133 1134
			set_sta_flag(sta, WLAN_STA_SHORT_PREAMBLE);
		else
			clear_sta_flag(sta, WLAN_STA_SHORT_PREAMBLE);
1135
	}
1136

1137 1138
	if (mask & BIT(NL80211_STA_FLAG_MFP)) {
		if (set & BIT(NL80211_STA_FLAG_MFP))
J
Johannes Berg 已提交
1139 1140 1141
			set_sta_flag(sta, WLAN_STA_MFP);
		else
			clear_sta_flag(sta, WLAN_STA_MFP);
1142
	}
1143

1144 1145
	if (mask & BIT(NL80211_STA_FLAG_TDLS_PEER)) {
		if (set & BIT(NL80211_STA_FLAG_TDLS_PEER))
J
Johannes Berg 已提交
1146 1147 1148
			set_sta_flag(sta, WLAN_STA_TDLS_PEER);
		else
			clear_sta_flag(sta, WLAN_STA_TDLS_PEER);
1149
	}
1150

1151 1152 1153 1154 1155 1156 1157
	/* mark TDLS channel switch support, if the AP allows it */
	if (test_sta_flag(sta, WLAN_STA_TDLS_PEER) &&
	    !sdata->u.mgd.tdls_chan_switch_prohibited &&
	    params->ext_capab_len >= 4 &&
	    params->ext_capab[3] & WLAN_EXT_CAPA4_TDLS_CHAN_SWITCH)
		set_sta_flag(sta, WLAN_STA_TDLS_CHAN_SWITCH);

1158 1159 1160 1161 1162 1163
	if (test_sta_flag(sta, WLAN_STA_TDLS_PEER) &&
	    ieee80211_hw_check(&local->hw, TDLS_WIDER_BW) &&
	    params->ext_capab_len >= 8 &&
	    params->ext_capab[7] & WLAN_EXT_CAPA8_TDLS_WIDE_BW_ENABLED)
		set_sta_flag(sta, WLAN_STA_TDLS_WIDER_BW);

1164 1165 1166 1167
	if (params->sta_modify_mask & STATION_PARAM_APPLY_UAPSD) {
		sta->sta.uapsd_queues = params->uapsd_queues;
		sta->sta.max_sp = params->max_sp;
	}
1168

1169 1170 1171 1172 1173 1174 1175
	/*
	 * 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
1176
	/*
1177 1178 1179 1180 1181
	 * 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
1182 1183
	 */

1184 1185 1186 1187
	if (params->listen_interval >= 0)
		sta->listen_interval = params->listen_interval;

	if (params->supported_rates) {
1188 1189 1190 1191
		ieee80211_parse_bitrates(&sdata->vif.bss_conf.chandef,
					 sband, params->supported_rates,
					 params->supported_rates_len,
					 &sta->sta.supp_rates[band]);
1192
	}
1193

J
Johannes Berg 已提交
1194
	if (params->ht_capa)
B
Ben Greear 已提交
1195
		ieee80211_ht_cap_ie_to_sta_ht_cap(sdata, sband,
1196
						  params->ht_capa, sta);
1197

M
Mahesh Palivela 已提交
1198 1199
	if (params->vht_capa)
		ieee80211_vht_cap_ie_to_sta_vht_cap(sdata, sband,
1200
						    params->vht_capa, sta);
M
Mahesh Palivela 已提交
1201

1202 1203 1204 1205 1206 1207 1208 1209 1210
	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);
	}

1211 1212
	if (ieee80211_vif_is_mesh(&sdata->vif))
		sta_apply_mesh_params(local, sta, params);
1213

1214 1215 1216 1217 1218 1219 1220
	/* set the STA state after all sta info from usermode has been set */
	if (test_sta_flag(sta, WLAN_STA_TDLS_PEER)) {
		ret = sta_apply_auth_flags(local, sta, mask, set);
		if (ret)
			return ret;
	}

1221
	return 0;
1222 1223 1224
}

static int ieee80211_add_station(struct wiphy *wiphy, struct net_device *dev,
1225 1226
				 const u8 *mac,
				 struct station_parameters *params)
1227
{
1228
	struct ieee80211_local *local = wiphy_priv(wiphy);
1229 1230
	struct sta_info *sta;
	struct ieee80211_sub_if_data *sdata;
J
Johannes Berg 已提交
1231
	int err;
1232
	int layer2_update;
1233 1234 1235 1236

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

1237 1238
		if (sdata->vif.type != NL80211_IFTYPE_AP_VLAN &&
		    sdata->vif.type != NL80211_IFTYPE_AP)
1239 1240 1241 1242
			return -EINVAL;
	} else
		sdata = IEEE80211_DEV_TO_SUB_IF(dev);

1243
	if (ether_addr_equal(mac, sdata->vif.addr))
1244 1245 1246 1247 1248 1249
		return -EINVAL;

	if (is_multicast_ether_addr(mac))
		return -EINVAL;

	sta = sta_info_alloc(sdata, mac, GFP_KERNEL);
J
Johannes Berg 已提交
1250 1251
	if (!sta)
		return -ENOMEM;
1252

1253 1254 1255 1256
	/*
	 * defaults -- if userspace wants something else we'll
	 * change it accordingly in sta_apply_parameters()
	 */
1257 1258 1259
	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);
1260 1261
	} else {
		sta->sta.tdls = true;
1262
	}
1263

1264 1265 1266 1267 1268
	err = sta_apply_parameters(local, sta, params);
	if (err) {
		sta_info_free(local, sta);
		return err;
	}
1269

1270
	/*
1271 1272
	 * for TDLS, rate control should be initialized only when
	 * rates are known and station is marked authorized
1273 1274 1275
	 */
	if (!test_sta_flag(sta, WLAN_STA_TDLS_PEER))
		rate_control_rate_init(sta);
1276

1277 1278 1279
	layer2_update = sdata->vif.type == NL80211_IFTYPE_AP_VLAN ||
		sdata->vif.type == NL80211_IFTYPE_AP;

1280
	err = sta_info_insert_rcu(sta);
J
Johannes Berg 已提交
1281 1282 1283 1284 1285
	if (err) {
		rcu_read_unlock();
		return err;
	}

1286
	if (layer2_update)
J
Johannes Berg 已提交
1287 1288 1289 1290
		ieee80211_send_layer2_update(sta);

	rcu_read_unlock();

1291 1292 1293 1294
	return 0;
}

static int ieee80211_del_station(struct wiphy *wiphy, struct net_device *dev,
1295
				 struct station_del_parameters *params)
1296
{
1297
	struct ieee80211_sub_if_data *sdata;
1298

1299 1300
	sdata = IEEE80211_DEV_TO_SUB_IF(dev);

1301 1302
	if (params->mac)
		return sta_info_destroy_addr_bss(sdata, params->mac);
1303

1304
	sta_info_flush(sdata);
1305 1306 1307 1308
	return 0;
}

static int ieee80211_change_station(struct wiphy *wiphy,
1309
				    struct net_device *dev, const u8 *mac,
1310 1311
				    struct station_parameters *params)
{
1312
	struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1313
	struct ieee80211_local *local = wiphy_priv(wiphy);
1314 1315
	struct sta_info *sta;
	struct ieee80211_sub_if_data *vlansdata;
1316
	enum cfg80211_station_type statype;
1317
	int err;
1318

1319
	mutex_lock(&local->sta_mtx);
J
Johannes Berg 已提交
1320

1321
	sta = sta_info_get_bss(sdata, mac);
J
Johannes Berg 已提交
1322
	if (!sta) {
1323 1324
		err = -ENOENT;
		goto out_err;
J
Johannes Berg 已提交
1325
	}
1326

1327 1328
	switch (sdata->vif.type) {
	case NL80211_IFTYPE_MESH_POINT:
1329
		if (sdata->u.mesh.user_mpm)
1330
			statype = CFG80211_STA_MESH_PEER_USER;
1331
		else
1332
			statype = CFG80211_STA_MESH_PEER_KERNEL;
1333 1334 1335 1336 1337 1338 1339 1340 1341 1342 1343 1344 1345 1346 1347 1348 1349 1350 1351 1352 1353
		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;
1354 1355
	}

1356 1357 1358 1359
	err = cfg80211_check_station_change(wiphy, params, statype);
	if (err)
		goto out_err;

1360
	if (params->vlan && params->vlan != sta->sdata->dev) {
1361 1362 1363
		bool prev_4addr = false;
		bool new_4addr = false;

1364 1365
		vlansdata = IEEE80211_DEV_TO_SUB_IF(params->vlan);

1366
		if (params->vlan->ieee80211_ptr->use_4addr) {
J
Johannes Berg 已提交
1367
			if (vlansdata->u.vlan.sta) {
1368 1369
				err = -EBUSY;
				goto out_err;
J
Johannes Berg 已提交
1370
			}
1371

1372
			rcu_assign_pointer(vlansdata->u.vlan.sta, sta);
1373 1374 1375 1376 1377
			new_4addr = true;
		}

		if (sta->sdata->vif.type == NL80211_IFTYPE_AP_VLAN &&
		    sta->sdata->u.vlan.sta) {
M
Monam Agarwal 已提交
1378
			RCU_INIT_POINTER(sta->sdata->u.vlan.sta, NULL);
1379
			prev_4addr = true;
1380 1381
		}

1382
		sta->sdata = vlansdata;
1383
		ieee80211_check_fast_xmit(sta);
1384 1385 1386 1387 1388 1389 1390 1391 1392

		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);
		}

1393 1394 1395
		ieee80211_send_layer2_update(sta);
	}

1396
	err = sta_apply_parameters(local, sta, params);
1397 1398
	if (err)
		goto out_err;
1399

1400
	mutex_unlock(&local->sta_mtx);
J
Johannes Berg 已提交
1401

1402 1403 1404 1405 1406 1407 1408 1409 1410 1411 1412 1413 1414 1415
	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);
	}

1416
	if (sdata->vif.type == NL80211_IFTYPE_STATION &&
E
Eliad Peller 已提交
1417
	    params->sta_flags_mask & BIT(NL80211_STA_FLAG_AUTHORIZED)) {
1418
		ieee80211_recalc_ps(local, -1);
E
Eliad Peller 已提交
1419 1420
		ieee80211_recalc_ps_vif(sdata);
	}
1421

1422
	return 0;
1423 1424 1425
out_err:
	mutex_unlock(&local->sta_mtx);
	return err;
1426 1427
}

1428 1429
#ifdef CONFIG_MAC80211_MESH
static int ieee80211_add_mpath(struct wiphy *wiphy, struct net_device *dev,
1430
			       const u8 *dst, const u8 *next_hop)
1431
{
1432
	struct ieee80211_sub_if_data *sdata;
1433 1434 1435
	struct mesh_path *mpath;
	struct sta_info *sta;

1436 1437
	sdata = IEEE80211_DEV_TO_SUB_IF(dev);

1438
	rcu_read_lock();
1439
	sta = sta_info_get(sdata, next_hop);
1440 1441
	if (!sta) {
		rcu_read_unlock();
1442
		return -ENOENT;
1443
	}
1444

1445 1446
	mpath = mesh_path_add(sdata, dst);
	if (IS_ERR(mpath)) {
1447
		rcu_read_unlock();
1448
		return PTR_ERR(mpath);
1449
	}
1450 1451

	mesh_path_fix_nexthop(mpath, sta);
1452

1453 1454 1455 1456 1457
	rcu_read_unlock();
	return 0;
}

static int ieee80211_del_mpath(struct wiphy *wiphy, struct net_device *dev,
1458
			       const u8 *dst)
1459
{
1460 1461
	struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);

1462
	if (dst)
J
Johannes Berg 已提交
1463
		return mesh_path_del(sdata, dst);
1464

1465
	mesh_path_flush_by_iface(sdata);
1466 1467 1468
	return 0;
}

1469 1470
static int ieee80211_change_mpath(struct wiphy *wiphy, struct net_device *dev,
				  const u8 *dst, const u8 *next_hop)
1471
{
1472
	struct ieee80211_sub_if_data *sdata;
1473 1474 1475
	struct mesh_path *mpath;
	struct sta_info *sta;

1476 1477
	sdata = IEEE80211_DEV_TO_SUB_IF(dev);

1478 1479
	rcu_read_lock();

1480
	sta = sta_info_get(sdata, next_hop);
1481 1482
	if (!sta) {
		rcu_read_unlock();
1483
		return -ENOENT;
1484
	}
1485

J
Johannes Berg 已提交
1486
	mpath = mesh_path_lookup(sdata, dst);
1487 1488 1489 1490 1491 1492
	if (!mpath) {
		rcu_read_unlock();
		return -ENOENT;
	}

	mesh_path_fix_nexthop(mpath, sta);
1493

1494 1495 1496 1497 1498 1499 1500
	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
1501 1502 1503 1504
	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);
1505
	else
1506
		eth_zero_addr(next_hop);
1507

1508 1509
	memset(pinfo, 0, sizeof(*pinfo));

1510 1511
	pinfo->generation = mesh_paths_generation;

1512
	pinfo->filled = MPATH_INFO_FRAME_QLEN |
1513
			MPATH_INFO_SN |
1514 1515 1516 1517 1518 1519 1520
			MPATH_INFO_METRIC |
			MPATH_INFO_EXPTIME |
			MPATH_INFO_DISCOVERY_TIMEOUT |
			MPATH_INFO_DISCOVERY_RETRIES |
			MPATH_INFO_FLAGS;

	pinfo->frame_qlen = mpath->frame_queue.qlen;
1521
	pinfo->sn = mpath->sn;
1522 1523 1524 1525 1526 1527 1528 1529 1530 1531
	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;
1532 1533
	if (mpath->flags & MESH_PATH_SN_VALID)
		pinfo->flags |= NL80211_MPATH_FLAG_SN_VALID;
1534 1535
	if (mpath->flags & MESH_PATH_FIXED)
		pinfo->flags |= NL80211_MPATH_FLAG_FIXED;
1536 1537
	if (mpath->flags & MESH_PATH_RESOLVED)
		pinfo->flags |= NL80211_MPATH_FLAG_RESOLVED;
1538 1539 1540 1541 1542 1543
}

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

{
1544
	struct ieee80211_sub_if_data *sdata;
1545 1546
	struct mesh_path *mpath;

1547 1548
	sdata = IEEE80211_DEV_TO_SUB_IF(dev);

1549
	rcu_read_lock();
J
Johannes Berg 已提交
1550
	mpath = mesh_path_lookup(sdata, dst);
1551 1552 1553 1554 1555 1556 1557 1558 1559 1560 1561
	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,
1562 1563
				int idx, u8 *dst, u8 *next_hop,
				struct mpath_info *pinfo)
1564
{
1565
	struct ieee80211_sub_if_data *sdata;
1566 1567
	struct mesh_path *mpath;

1568 1569
	sdata = IEEE80211_DEV_TO_SUB_IF(dev);

1570
	rcu_read_lock();
J
Johannes Berg 已提交
1571
	mpath = mesh_path_lookup_by_idx(sdata, idx);
1572 1573 1574 1575 1576 1577 1578 1579 1580
	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;
}
1581

1582 1583 1584 1585 1586 1587 1588 1589 1590 1591 1592 1593 1594 1595 1596 1597 1598 1599 1600 1601 1602 1603 1604 1605 1606 1607 1608 1609 1610 1611 1612 1613 1614 1615 1616 1617 1618 1619 1620 1621 1622 1623 1624 1625 1626 1627 1628 1629 1630 1631 1632
static void mpp_set_pinfo(struct mesh_path *mpath, u8 *mpp,
			  struct mpath_info *pinfo)
{
	memset(pinfo, 0, sizeof(*pinfo));
	memcpy(mpp, mpath->mpp, ETH_ALEN);

	pinfo->generation = mpp_paths_generation;
}

static int ieee80211_get_mpp(struct wiphy *wiphy, struct net_device *dev,
			     u8 *dst, u8 *mpp, struct mpath_info *pinfo)

{
	struct ieee80211_sub_if_data *sdata;
	struct mesh_path *mpath;

	sdata = IEEE80211_DEV_TO_SUB_IF(dev);

	rcu_read_lock();
	mpath = mpp_path_lookup(sdata, dst);
	if (!mpath) {
		rcu_read_unlock();
		return -ENOENT;
	}
	memcpy(dst, mpath->dst, ETH_ALEN);
	mpp_set_pinfo(mpath, mpp, pinfo);
	rcu_read_unlock();
	return 0;
}

static int ieee80211_dump_mpp(struct wiphy *wiphy, struct net_device *dev,
			      int idx, u8 *dst, u8 *mpp,
			      struct mpath_info *pinfo)
{
	struct ieee80211_sub_if_data *sdata;
	struct mesh_path *mpath;

	sdata = IEEE80211_DEV_TO_SUB_IF(dev);

	rcu_read_lock();
	mpath = mpp_path_lookup_by_idx(sdata, idx);
	if (!mpath) {
		rcu_read_unlock();
		return -ENOENT;
	}
	memcpy(dst, mpath->dst, ETH_ALEN);
	mpp_set_pinfo(mpath, mpp, pinfo);
	rcu_read_unlock();
	return 0;
}

1633
static int ieee80211_get_mesh_config(struct wiphy *wiphy,
1634 1635 1636 1637 1638 1639 1640 1641 1642 1643 1644 1645 1646 1647 1648
				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;
}

1649 1650 1651 1652 1653
static int copy_mesh_setup(struct ieee80211_if_mesh *ifmsh,
		const struct mesh_setup *setup)
{
	u8 *new_ie;
	const u8 *old_ie;
1654 1655
	struct ieee80211_sub_if_data *sdata = container_of(ifmsh,
					struct ieee80211_sub_if_data, u.mesh);
1656

1657
	/* allocate information elements */
1658
	new_ie = NULL;
1659
	old_ie = ifmsh->ie;
1660

1661 1662
	if (setup->ie_len) {
		new_ie = kmemdup(setup->ie, setup->ie_len,
1663 1664 1665 1666
				GFP_KERNEL);
		if (!new_ie)
			return -ENOMEM;
	}
1667 1668 1669
	ifmsh->ie_len = setup->ie_len;
	ifmsh->ie = new_ie;
	kfree(old_ie);
1670 1671 1672 1673

	/* 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);
1674
	ifmsh->mesh_sp_id = setup->sync_method;
1675 1676
	ifmsh->mesh_pp_id = setup->path_sel_proto;
	ifmsh->mesh_pm_id = setup->path_metric;
1677
	ifmsh->user_mpm = setup->user_mpm;
1678
	ifmsh->mesh_auth_id = setup->auth_id;
1679 1680 1681 1682 1683
	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;
1684

1685 1686 1687
	/* mcast rate setting in Mesh Node */
	memcpy(sdata->vif.bss_conf.mcast_rate, setup->mcast_rate,
						sizeof(setup->mcast_rate));
1688
	sdata->vif.bss_conf.basic_rates = setup->basic_rates;
1689

1690 1691 1692
	sdata->vif.bss_conf.beacon_int = setup->beacon_interval;
	sdata->vif.bss_conf.dtim_period = setup->dtim_period;

1693 1694 1695
	return 0;
}

1696
static int ieee80211_update_mesh_config(struct wiphy *wiphy,
1697 1698
					struct net_device *dev, u32 mask,
					const struct mesh_config *nconf)
1699 1700 1701
{
	struct mesh_config *conf;
	struct ieee80211_sub_if_data *sdata;
1702 1703
	struct ieee80211_if_mesh *ifmsh;

1704
	sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1705
	ifmsh = &sdata->u.mesh;
1706 1707 1708 1709 1710 1711 1712 1713 1714 1715 1716 1717 1718 1719 1720

	/* 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;
1721
	if (_chg_mesh_attr(NL80211_MESHCONF_ELEMENT_TTL, mask))
1722
		conf->element_ttl = nconf->element_ttl;
1723 1724 1725
	if (_chg_mesh_attr(NL80211_MESHCONF_AUTO_OPEN_PLINKS, mask)) {
		if (ifmsh->user_mpm)
			return -EBUSY;
1726
		conf->auto_open_plinks = nconf->auto_open_plinks;
1727
	}
1728 1729 1730
	if (_chg_mesh_attr(NL80211_MESHCONF_SYNC_OFFSET_MAX_NEIGHBOR, mask))
		conf->dot11MeshNbrOffsetMaxNeighbor =
			nconf->dot11MeshNbrOffsetMaxNeighbor;
1731 1732 1733 1734 1735 1736 1737 1738 1739 1740 1741 1742 1743
	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;
1744 1745 1746
	if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_PERR_MIN_INTERVAL, mask))
		conf->dot11MeshHWMPperrMinInterval =
			nconf->dot11MeshHWMPperrMinInterval;
1747 1748 1749 1750
	if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME,
			   mask))
		conf->dot11MeshHWMPnetDiameterTraversalTime =
			nconf->dot11MeshHWMPnetDiameterTraversalTime;
1751 1752 1753 1754
	if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_ROOTMODE, mask)) {
		conf->dot11MeshHWMPRootMode = nconf->dot11MeshHWMPRootMode;
		ieee80211_mesh_root_setup(ifmsh);
	}
1755
	if (_chg_mesh_attr(NL80211_MESHCONF_GATE_ANNOUNCEMENTS, mask)) {
T
Thomas Pedersen 已提交
1756 1757 1758 1759
		/* our current gate announcement implementation rides on root
		 * announcements, so require this ifmsh to also be a root node
		 * */
		if (nconf->dot11MeshGateAnnouncementProtocol &&
1760 1761
		    !(conf->dot11MeshHWMPRootMode > IEEE80211_ROOTMODE_ROOT)) {
			conf->dot11MeshHWMPRootMode = IEEE80211_PROACTIVE_RANN;
T
Thomas Pedersen 已提交
1762 1763
			ieee80211_mesh_root_setup(ifmsh);
		}
1764 1765 1766
		conf->dot11MeshGateAnnouncementProtocol =
			nconf->dot11MeshGateAnnouncementProtocol;
	}
1767
	if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_RANN_INTERVAL, mask))
1768 1769
		conf->dot11MeshHWMPRannInterval =
			nconf->dot11MeshHWMPRannInterval;
1770 1771
	if (_chg_mesh_attr(NL80211_MESHCONF_FORWARDING, mask))
		conf->dot11MeshForwarding = nconf->dot11MeshForwarding;
1772 1773 1774 1775
	if (_chg_mesh_attr(NL80211_MESHCONF_RSSI_THRESHOLD, mask)) {
		/* our RSSI threshold implementation is supported only for
		 * devices that report signal in dBm.
		 */
1776
		if (!ieee80211_hw_check(&sdata->local->hw, SIGNAL_DBM))
1777 1778 1779
			return -ENOTSUPP;
		conf->rssi_threshold = nconf->rssi_threshold;
	}
1780 1781 1782 1783 1784
	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);
	}
1785 1786 1787 1788 1789 1790
	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;
1791 1792 1793
	if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_CONFIRMATION_INTERVAL, mask))
		conf->dot11MeshHWMPconfirmationInterval =
			nconf->dot11MeshHWMPconfirmationInterval;
M
Marco Porsch 已提交
1794 1795 1796 1797
	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
1798
	if (_chg_mesh_attr(NL80211_MESHCONF_AWAKE_WINDOW, mask))
M
Marco Porsch 已提交
1799 1800
		conf->dot11MeshAwakeWindowDuration =
			nconf->dot11MeshAwakeWindowDuration;
1801 1802
	if (_chg_mesh_attr(NL80211_MESHCONF_PLINK_TIMEOUT, mask))
		conf->plink_timeout = nconf->plink_timeout;
T
Thomas Pedersen 已提交
1803
	ieee80211_mbss_info_change_notify(sdata, BSS_CHANGED_BEACON);
1804 1805 1806
	return 0;
}

1807 1808 1809 1810 1811 1812
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;
1813
	int err;
1814

1815 1816 1817 1818
	memcpy(&ifmsh->mshcfg, conf, sizeof(struct mesh_config));
	err = copy_mesh_setup(ifmsh, setup);
	if (err)
		return err;
1819

1820 1821 1822 1823
	/* can mesh use other SMPS modes? */
	sdata->smps_mode = IEEE80211_SMPS_OFF;
	sdata->needed_rx_chains = sdata->local->rx_chains;

1824
	mutex_lock(&sdata->local->mtx);
1825
	err = ieee80211_vif_use_channel(sdata, &setup->chandef,
J
Johannes Berg 已提交
1826
					IEEE80211_CHANCTX_SHARED);
1827
	mutex_unlock(&sdata->local->mtx);
1828 1829 1830
	if (err)
		return err;

T
Thomas Pedersen 已提交
1831
	return ieee80211_start_mesh(sdata);
1832 1833 1834 1835 1836 1837 1838
}

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);
1839
	mutex_lock(&sdata->local->mtx);
J
Johannes Berg 已提交
1840
	ieee80211_vif_release_channel(sdata);
1841
	mutex_unlock(&sdata->local->mtx);
1842 1843 1844

	return 0;
}
1845 1846
#endif

1847 1848 1849 1850
static int ieee80211_change_bss(struct wiphy *wiphy,
				struct net_device *dev,
				struct bss_parameters *params)
{
J
Johannes Berg 已提交
1851 1852
	struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
	enum ieee80211_band band;
1853 1854
	u32 changed = 0;

1855
	if (!sdata_dereference(sdata->u.ap.beacon, sdata))
J
Johannes Berg 已提交
1856 1857 1858
		return -ENOENT;

	band = ieee80211_get_sdata_band(sdata);
1859 1860

	if (params->use_cts_prot >= 0) {
J
Johannes Berg 已提交
1861
		sdata->vif.bss_conf.use_cts_prot = params->use_cts_prot;
1862 1863 1864
		changed |= BSS_CHANGED_ERP_CTS_PROT;
	}
	if (params->use_short_preamble >= 0) {
J
Johannes Berg 已提交
1865
		sdata->vif.bss_conf.use_short_preamble =
1866 1867 1868
			params->use_short_preamble;
		changed |= BSS_CHANGED_ERP_PREAMBLE;
	}
1869 1870

	if (!sdata->vif.bss_conf.use_short_slot &&
J
Johannes Berg 已提交
1871
	    band == IEEE80211_BAND_5GHZ) {
1872 1873 1874 1875
		sdata->vif.bss_conf.use_short_slot = true;
		changed |= BSS_CHANGED_ERP_SLOT;
	}

1876
	if (params->use_short_slot_time >= 0) {
J
Johannes Berg 已提交
1877
		sdata->vif.bss_conf.use_short_slot =
1878 1879 1880 1881
			params->use_short_slot_time;
		changed |= BSS_CHANGED_ERP_SLOT;
	}

1882
	if (params->basic_rates) {
1883 1884 1885 1886 1887
		ieee80211_parse_bitrates(&sdata->vif.bss_conf.chandef,
					 wiphy->bands[band],
					 params->basic_rates,
					 params->basic_rates_len,
					 &sdata->vif.bss_conf.basic_rates);
1888 1889 1890
		changed |= BSS_CHANGED_BASIC_RATES;
	}

1891 1892 1893 1894 1895 1896 1897
	if (params->ap_isolate >= 0) {
		if (params->ap_isolate)
			sdata->flags |= IEEE80211_SDATA_DONT_BRIDGE_PACKETS;
		else
			sdata->flags &= ~IEEE80211_SDATA_DONT_BRIDGE_PACKETS;
	}

1898 1899 1900 1901 1902 1903
	if (params->ht_opmode >= 0) {
		sdata->vif.bss_conf.ht_operation_mode =
			(u16) params->ht_opmode;
		changed |= BSS_CHANGED_HT;
	}

1904
	if (params->p2p_ctwindow >= 0) {
J
Janusz Dziedzic 已提交
1905 1906 1907 1908
		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;
1909 1910 1911
		changed |= BSS_CHANGED_P2P_PS;
	}

J
Janusz Dziedzic 已提交
1912 1913 1914 1915 1916 1917 1918
	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;
1919 1920 1921
		changed |= BSS_CHANGED_P2P_PS;
	}

1922 1923 1924 1925 1926
	ieee80211_bss_info_change_notify(sdata, changed);

	return 0;
}

1927
static int ieee80211_set_txq_params(struct wiphy *wiphy,
1928
				    struct net_device *dev,
1929 1930 1931
				    struct ieee80211_txq_params *params)
{
	struct ieee80211_local *local = wiphy_priv(wiphy);
1932
	struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1933 1934 1935 1936 1937
	struct ieee80211_tx_queue_params p;

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

1938 1939 1940
	if (local->hw.queues < IEEE80211_NUM_ACS)
		return -EOPNOTSUPP;

1941 1942 1943 1944 1945
	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
1946 1947 1948 1949 1950 1951 1952

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

1953 1954
	sdata->tx_conf[params->ac] = p;
	if (drv_conf_tx(local, sdata, params->ac, &p)) {
J
Joe Perches 已提交
1955
		wiphy_debug(local->hw.wiphy,
1956 1957
			    "failed to set TX queue parameters for AC %d\n",
			    params->ac);
1958 1959 1960
		return -EINVAL;
	}

1961 1962
	ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_QOS);

1963 1964 1965
	return 0;
}

1966
#ifdef CONFIG_PM
J
Johannes Berg 已提交
1967 1968
static int ieee80211_suspend(struct wiphy *wiphy,
			     struct cfg80211_wowlan *wowlan)
1969
{
1970
	return __ieee80211_suspend(wiphy_priv(wiphy), wowlan);
1971 1972 1973 1974 1975 1976 1977 1978 1979 1980 1981
}

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

1982 1983 1984
static int ieee80211_scan(struct wiphy *wiphy,
			  struct cfg80211_scan_request *req)
{
J
Johannes Berg 已提交
1985 1986 1987
	struct ieee80211_sub_if_data *sdata;

	sdata = IEEE80211_WDEV_TO_SUB_IF(req->wdev);
1988

1989 1990 1991 1992 1993
	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:
1994
	case NL80211_IFTYPE_P2P_DEVICE:
1995 1996 1997 1998
		break;
	case NL80211_IFTYPE_P2P_GO:
		if (sdata->local->ops->hw_scan)
			break;
1999 2000 2001 2002 2003
		/*
		 * FIXME: implement NoA while scanning in software,
		 * for now fall through to allow scanning only when
		 * beaconing hasn't been configured yet
		 */
2004
	case NL80211_IFTYPE_AP:
2005 2006 2007 2008 2009 2010 2011 2012 2013 2014
		/*
		 * 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)))
2015 2016 2017 2018 2019
			return -EOPNOTSUPP;
		break;
	default:
		return -EOPNOTSUPP;
	}
2020 2021 2022 2023

	return ieee80211_request_scan(sdata, req);
}

2024 2025 2026 2027 2028 2029 2030 2031 2032 2033 2034 2035 2036 2037
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
2038
ieee80211_sched_scan_stop(struct wiphy *wiphy, struct net_device *dev)
2039 2040 2041 2042 2043 2044
{
	struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);

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

2045
	return ieee80211_request_sched_scan_stop(sdata);
2046 2047
}

2048 2049 2050
static int ieee80211_auth(struct wiphy *wiphy, struct net_device *dev,
			  struct cfg80211_auth_request *req)
{
2051
	return ieee80211_mgd_auth(IEEE80211_DEV_TO_SUB_IF(dev), req);
2052 2053 2054 2055 2056
}

static int ieee80211_assoc(struct wiphy *wiphy, struct net_device *dev,
			   struct cfg80211_assoc_request *req)
{
2057
	return ieee80211_mgd_assoc(IEEE80211_DEV_TO_SUB_IF(dev), req);
2058 2059 2060
}

static int ieee80211_deauth(struct wiphy *wiphy, struct net_device *dev,
2061
			    struct cfg80211_deauth_request *req)
2062
{
2063
	return ieee80211_mgd_deauth(IEEE80211_DEV_TO_SUB_IF(dev), req);
2064 2065 2066
}

static int ieee80211_disassoc(struct wiphy *wiphy, struct net_device *dev,
2067
			      struct cfg80211_disassoc_request *req)
2068
{
2069
	return ieee80211_mgd_disassoc(IEEE80211_DEV_TO_SUB_IF(dev), req);
2070 2071
}

2072 2073 2074
static int ieee80211_join_ibss(struct wiphy *wiphy, struct net_device *dev,
			       struct cfg80211_ibss_params *params)
{
J
Johannes Berg 已提交
2075
	return ieee80211_ibss_join(IEEE80211_DEV_TO_SUB_IF(dev), params);
2076 2077 2078 2079
}

static int ieee80211_leave_ibss(struct wiphy *wiphy, struct net_device *dev)
{
J
Johannes Berg 已提交
2080
	return ieee80211_ibss_leave(IEEE80211_DEV_TO_SUB_IF(dev));
2081 2082
}

2083 2084 2085 2086 2087 2088 2089 2090 2091 2092 2093
static int ieee80211_join_ocb(struct wiphy *wiphy, struct net_device *dev,
			      struct ocb_setup *setup)
{
	return ieee80211_ocb_join(IEEE80211_DEV_TO_SUB_IF(dev), setup);
}

static int ieee80211_leave_ocb(struct wiphy *wiphy, struct net_device *dev)
{
	return ieee80211_ocb_leave(IEEE80211_DEV_TO_SUB_IF(dev));
}

2094 2095 2096 2097 2098
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);

2099 2100
	memcpy(sdata->vif.bss_conf.mcast_rate, rate,
	       sizeof(int) * IEEE80211_NUM_BANDS);
2101 2102 2103 2104

	return 0;
}

2105 2106 2107
static int ieee80211_set_wiphy_params(struct wiphy *wiphy, u32 changed)
{
	struct ieee80211_local *local = wiphy_priv(wiphy);
2108
	int err;
2109

2110
	if (changed & WIPHY_PARAM_FRAG_THRESHOLD) {
J
Johannes Berg 已提交
2111 2112
		ieee80211_check_fast_xmit_all(local);

2113 2114
		err = drv_set_frag_threshold(local, wiphy->frag_threshold);

J
Johannes Berg 已提交
2115 2116
		if (err) {
			ieee80211_check_fast_xmit_all(local);
2117
			return err;
J
Johannes Berg 已提交
2118
		}
2119 2120
	}

2121 2122 2123 2124 2125 2126 2127
	if ((changed & WIPHY_PARAM_COVERAGE_CLASS) ||
	    (changed & WIPHY_PARAM_DYN_ACK)) {
		s16 coverage_class;

		coverage_class = changed & WIPHY_PARAM_COVERAGE_CLASS ?
					wiphy->coverage_class : -1;
		err = drv_set_coverage_class(local, coverage_class);
2128 2129 2130 2131 2132

		if (err)
			return err;
	}

2133
	if (changed & WIPHY_PARAM_RTS_THRESHOLD) {
2134
		err = drv_set_rts_threshold(local, wiphy->rts_threshold);
2135

2136 2137
		if (err)
			return err;
2138 2139
	}

2140 2141 2142
	if (changed & WIPHY_PARAM_RETRY_SHORT) {
		if (wiphy->retry_short > IEEE80211_MAX_TX_RETRY)
			return -EINVAL;
2143
		local->hw.conf.short_frame_max_tx_count = wiphy->retry_short;
2144 2145 2146 2147
	}
	if (changed & WIPHY_PARAM_RETRY_LONG) {
		if (wiphy->retry_long > IEEE80211_MAX_TX_RETRY)
			return -EINVAL;
2148
		local->hw.conf.long_frame_max_tx_count = wiphy->retry_long;
2149
	}
2150 2151 2152 2153 2154 2155 2156
	if (changed &
	    (WIPHY_PARAM_RETRY_SHORT | WIPHY_PARAM_RETRY_LONG))
		ieee80211_hw_config(local, IEEE80211_CONF_CHANGE_RETRY_LIMITS);

	return 0;
}

2157
static int ieee80211_set_tx_power(struct wiphy *wiphy,
2158
				  struct wireless_dev *wdev,
2159
				  enum nl80211_tx_power_setting type, int mbm)
2160 2161
{
	struct ieee80211_local *local = wiphy_priv(wiphy);
2162
	struct ieee80211_sub_if_data *sdata;
2163 2164
	enum nl80211_tx_power_setting txp_type = type;
	bool update_txp_type = false;
2165

2166 2167 2168 2169 2170 2171
	if (wdev) {
		sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);

		switch (type) {
		case NL80211_TX_POWER_AUTOMATIC:
			sdata->user_power_level = IEEE80211_UNSET_POWER_LEVEL;
2172
			txp_type = NL80211_TX_POWER_LIMITED;
2173 2174 2175 2176 2177 2178 2179 2180 2181
			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;
		}

2182 2183 2184 2185 2186 2187
		if (txp_type != sdata->vif.bss_conf.txpower_type) {
			update_txp_type = true;
			sdata->vif.bss_conf.txpower_type = txp_type;
		}

		ieee80211_recalc_txpower(sdata, update_txp_type);
2188 2189 2190

		return 0;
	}
J
Johannes Berg 已提交
2191

2192
	switch (type) {
2193
	case NL80211_TX_POWER_AUTOMATIC:
2194
		local->user_power_level = IEEE80211_UNSET_POWER_LEVEL;
2195
		txp_type = NL80211_TX_POWER_LIMITED;
2196
		break;
2197 2198 2199 2200 2201
	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);
2202 2203 2204
		break;
	}

2205
	mutex_lock(&local->iflist_mtx);
2206
	list_for_each_entry(sdata, &local->interfaces, list) {
2207
		sdata->user_power_level = local->user_power_level;
2208 2209 2210 2211
		if (txp_type != sdata->vif.bss_conf.txpower_type)
			update_txp_type = true;
		sdata->vif.bss_conf.txpower_type = txp_type;
	}
2212
	list_for_each_entry(sdata, &local->interfaces, list)
2213
		ieee80211_recalc_txpower(sdata, update_txp_type);
2214
	mutex_unlock(&local->iflist_mtx);
2215 2216 2217 2218

	return 0;
}

2219 2220 2221
static int ieee80211_get_tx_power(struct wiphy *wiphy,
				  struct wireless_dev *wdev,
				  int *dbm)
2222 2223
{
	struct ieee80211_local *local = wiphy_priv(wiphy);
2224
	struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
2225

2226 2227 2228
	if (local->ops->get_txpower)
		return drv_get_txpower(local, sdata, dbm);

2229 2230 2231 2232
	if (!local->use_chanctx)
		*dbm = local->hw.conf.power_level;
	else
		*dbm = sdata->vif.bss_conf.txpower;
2233 2234 2235 2236

	return 0;
}

J
Johannes Berg 已提交
2237
static int ieee80211_set_wds_peer(struct wiphy *wiphy, struct net_device *dev,
J
Johannes Berg 已提交
2238
				  const u8 *addr)
J
Johannes Berg 已提交
2239 2240 2241 2242 2243 2244 2245 2246
{
	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
2247 2248 2249 2250 2251 2252 2253
static void ieee80211_rfkill_poll(struct wiphy *wiphy)
{
	struct ieee80211_local *local = wiphy_priv(wiphy);

	drv_rfkill_poll(local);
}

2254
#ifdef CONFIG_NL80211_TESTMODE
2255 2256 2257
static int ieee80211_testmode_cmd(struct wiphy *wiphy,
				  struct wireless_dev *wdev,
				  void *data, int len)
2258 2259
{
	struct ieee80211_local *local = wiphy_priv(wiphy);
2260
	struct ieee80211_vif *vif = NULL;
2261 2262 2263 2264

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

2265 2266 2267 2268 2269 2270 2271 2272 2273
	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);
2274
}
W
Wey-Yi Guy 已提交
2275 2276 2277 2278 2279 2280 2281 2282 2283 2284 2285 2286 2287

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);
}
2288 2289
#endif

2290 2291 2292 2293 2294 2295 2296 2297 2298 2299 2300 2301 2302 2303 2304 2305 2306 2307 2308 2309 2310 2311 2312 2313 2314 2315 2316 2317
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;

	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,
2318
	       "SMPS %d requested in AP mode, sending Action frame to %d stations\n",
2319 2320 2321
	       smps_mode, atomic_read(&sdata->u.ap.num_mcast_sta));

	mutex_lock(&sdata->local->sta_mtx);
2322 2323 2324 2325 2326 2327 2328
	list_for_each_entry(sta, &sdata->local->sta_list, list) {
		/*
		 * Only stations associated to our AP and
		 * associated VLANs
		 */
		if (sta->sdata->bss != &sdata->u.ap)
			continue;
2329

2330 2331 2332
		/* This station doesn't support MIMO - skip it */
		if (sta_info_tx_streams(sta) == 1)
			continue;
2333

2334 2335 2336 2337 2338 2339 2340 2341 2342 2343 2344
		/*
		 * 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;
		}
2345

2346 2347 2348 2349 2350 2351
		/*
		 * 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;
2352

2353 2354 2355
		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);
2356 2357 2358 2359 2360 2361 2362 2363 2364 2365 2366
	}
	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)
2367 2368 2369 2370
{
	const u8 *ap;
	enum ieee80211_smps_mode old_req;
	int err;
2371 2372
	struct sta_info *sta;
	bool tdls_peer_found = false;
2373

2374
	lockdep_assert_held(&sdata->wdev.mtx);
2375

2376 2377 2378
	if (WARN_ON_ONCE(sdata->vif.type != NL80211_IFTYPE_STATION))
		return -EINVAL;

2379 2380 2381 2382 2383 2384 2385 2386 2387
	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
2388 2389
	 * association, there's no need to do anything, just store
	 * the new value until we associate.
2390 2391
	 */
	if (!sdata->u.mgd.associated ||
2392
	    sdata->vif.bss_conf.chandef.width == NL80211_CHAN_WIDTH_20_NOHT)
2393 2394
		return 0;

2395
	ap = sdata->u.mgd.associated->bssid;
2396

2397 2398 2399 2400 2401 2402 2403 2404 2405 2406 2407
	rcu_read_lock();
	list_for_each_entry_rcu(sta, &sdata->local->sta_list, list) {
		if (!sta->sta.tdls || sta->sdata != sdata || !sta->uploaded ||
		    !test_sta_flag(sta, WLAN_STA_AUTHORIZED))
			continue;

		tdls_peer_found = true;
		break;
	}
	rcu_read_unlock();

2408
	if (smps_mode == IEEE80211_SMPS_AUTOMATIC) {
2409
		if (tdls_peer_found || !sdata->u.mgd.powersave)
2410
			smps_mode = IEEE80211_SMPS_OFF;
2411 2412
		else
			smps_mode = IEEE80211_SMPS_DYNAMIC;
2413 2414 2415 2416 2417 2418 2419
	}

	/* 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;
2420 2421
	else if (smps_mode != IEEE80211_SMPS_OFF && tdls_peer_found)
		ieee80211_teardown_tdls_peers(sdata);
2422 2423 2424 2425

	return err;
}

J
Johannes Berg 已提交
2426 2427 2428 2429 2430 2431
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);

2432
	if (sdata->vif.type != NL80211_IFTYPE_STATION)
2433 2434
		return -EOPNOTSUPP;

2435
	if (!ieee80211_hw_check(&local->hw, SUPPORTS_PS))
J
Johannes Berg 已提交
2436 2437 2438
		return -EOPNOTSUPP;

	if (enabled == sdata->u.mgd.powersave &&
2439
	    timeout == local->dynamic_ps_forced_timeout)
J
Johannes Berg 已提交
2440 2441 2442
		return 0;

	sdata->u.mgd.powersave = enabled;
2443
	local->dynamic_ps_forced_timeout = timeout;
J
Johannes Berg 已提交
2444

2445
	/* no change, but if automatic follow powersave */
2446
	sdata_lock(sdata);
2447
	__ieee80211_request_smps_mgd(sdata, sdata->u.mgd.req_smps);
2448
	sdata_unlock(sdata);
2449

2450
	if (ieee80211_hw_check(&local->hw, SUPPORTS_DYNAMIC_PS))
J
Johannes Berg 已提交
2451 2452 2453
		ieee80211_hw_config(local, IEEE80211_CONF_CHANGE_PS);

	ieee80211_recalc_ps(local, -1);
E
Eliad Peller 已提交
2454
	ieee80211_recalc_ps_vif(sdata);
J
Johannes Berg 已提交
2455 2456 2457 2458

	return 0;
}

2459 2460 2461 2462 2463 2464 2465 2466 2467 2468 2469 2470
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;

2471 2472 2473 2474
	if (sdata->vif.driver_flags & IEEE80211_VIF_BEACON_FILTER &&
	    !(sdata->vif.driver_flags & IEEE80211_VIF_SUPPORTS_CQM_RSSI))
		return -EOPNOTSUPP;

2475 2476 2477 2478
	bss_conf->cqm_rssi_thold = rssi_thold;
	bss_conf->cqm_rssi_hyst = rssi_hyst;

	/* tell the driver upon association, unless already associated */
2479 2480
	if (sdata->u.mgd.associated &&
	    sdata->vif.driver_flags & IEEE80211_VIF_SUPPORTS_CQM_RSSI)
2481 2482 2483 2484 2485
		ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_CQM);

	return 0;
}

J
Johannes Berg 已提交
2486 2487 2488 2489 2490 2491 2492
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);
2493
	int i, ret;
2494

2495 2496 2497
	if (!ieee80211_sdata_running(sdata))
		return -ENETDOWN;

2498
	if (ieee80211_hw_check(&local->hw, HAS_RATE_CONTROL)) {
2499 2500 2501 2502
		ret = drv_set_bitrate_mask(local, sdata, mask);
		if (ret)
			return ret;
	}
J
Johannes Berg 已提交
2503

2504
	for (i = 0; i < IEEE80211_NUM_BANDS; i++) {
2505 2506 2507
		struct ieee80211_supported_band *sband = wiphy->bands[i];
		int j;

2508
		sdata->rc_rateidx_mask[i] = mask->control[i].legacy;
2509 2510
		memcpy(sdata->rc_rateidx_mcs_mask[i], mask->control[i].ht_mcs,
		       sizeof(mask->control[i].ht_mcs));
2511 2512 2513
		memcpy(sdata->rc_rateidx_vht_mcs_mask[i],
		       mask->control[i].vht_mcs,
		       sizeof(mask->control[i].vht_mcs));
2514 2515

		sdata->rc_has_mcs_mask[i] = false;
2516
		sdata->rc_has_vht_mcs_mask[i] = false;
2517 2518 2519
		if (!sband)
			continue;

2520 2521
		for (j = 0; j < IEEE80211_HT_MCS_MASK_LEN; j++) {
			if (~sdata->rc_rateidx_mcs_mask[i][j])
2522
				sdata->rc_has_mcs_mask[i] = true;
2523 2524 2525 2526 2527 2528

			if (~sdata->rc_rateidx_vht_mcs_mask[i][j])
				sdata->rc_has_vht_mcs_mask[i] = true;

			if (sdata->rc_has_mcs_mask[i] &&
			    sdata->rc_has_vht_mcs_mask[i])
2529
				break;
2530
		}
2531
	}
J
Johannes Berg 已提交
2532

2533
	return 0;
J
Johannes Berg 已提交
2534 2535
}

2536 2537 2538 2539
static bool ieee80211_coalesce_started_roc(struct ieee80211_local *local,
					   struct ieee80211_roc_work *new_roc,
					   struct ieee80211_roc_work *cur_roc)
{
2540 2541 2542 2543
	unsigned long now = jiffies;
	unsigned long remaining = cur_roc->hw_start_time +
				  msecs_to_jiffies(cur_roc->duration) -
				  now;
2544 2545 2546 2547

	if (WARN_ON(!cur_roc->started || !cur_roc->hw_begun))
		return false;

2548 2549
	/* if it doesn't fit entirely, schedule a new one */
	if (new_roc->duration > jiffies_to_msecs(remaining))
2550 2551 2552 2553
		return false;

	ieee80211_handle_roc_started(new_roc);

2554 2555
	/* add to dependents so we send the expired event properly */
	list_add_tail(&new_roc->list, &cur_roc->dependents);
2556 2557 2558
	return true;
}

2559 2560 2561 2562 2563 2564 2565 2566 2567 2568 2569 2570 2571
static u64 ieee80211_mgmt_tx_cookie(struct ieee80211_local *local)
{
	lockdep_assert_held(&local->mtx);

	local->roc_cookie_counter++;

	/* wow, you wrapped 64 bits ... more likely a bug */
	if (WARN_ON(local->roc_cookie_counter == 0))
		local->roc_cookie_counter++;

	return local->roc_cookie_counter;
}

2572 2573 2574 2575
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,
2576 2577
				    struct sk_buff *txskb,
				    enum ieee80211_roc_type type)
2578 2579 2580
{
	struct ieee80211_roc_work *roc, *tmp;
	bool queued = false;
2581 2582 2583 2584
	int ret;

	lockdep_assert_held(&local->mtx);

2585 2586 2587
	if (local->use_chanctx && !local->ops->remain_on_channel)
		return -EOPNOTSUPP;

2588 2589 2590 2591
	roc = kzalloc(sizeof(*roc), GFP_KERNEL);
	if (!roc)
		return -ENOMEM;

2592 2593 2594 2595 2596 2597 2598 2599 2600 2601 2602 2603
	/*
	 * 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;

2604 2605 2606 2607
	roc->chan = channel;
	roc->duration = duration;
	roc->req_duration = duration;
	roc->frame = txskb;
2608
	roc->type = type;
2609 2610 2611 2612
	roc->sdata = sdata;
	INIT_DELAYED_WORK(&roc->work, ieee80211_sw_roc_work);
	INIT_LIST_HEAD(&roc->dependents);

2613 2614 2615 2616 2617
	/*
	 * cookie is either the roc cookie (for normal roc)
	 * or the SKB (for mgmt TX)
	 */
	if (!txskb) {
2618
		roc->cookie = ieee80211_mgmt_tx_cookie(local);
2619 2620
		*cookie = roc->cookie;
	} else {
2621
		roc->mgmt_tx_cookie = *cookie;
2622 2623
	}

2624
	/* if there's one pending or we're scanning, queue this one */
2625
	if (!list_empty(&local->roc_list) ||
2626
	    local->scanning || ieee80211_is_radar_required(local))
2627 2628 2629 2630 2631 2632 2633 2634 2635 2636
		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) */

2637
	ret = drv_remain_on_channel(local, sdata, channel, duration, type);
2638
	if (ret) {
2639 2640
		kfree(roc);
		return ret;
2641 2642
	}

2643 2644 2645 2646 2647
	roc->started = true;
	goto out_queue;

 out_check_combine:
	list_for_each_entry(tmp, &local->roc_list, list) {
2648
		if (tmp->chan != channel || tmp->sdata != sdata)
2649 2650 2651 2652 2653 2654 2655
			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.
2656 2657
		 * If the type of the new ROC has higher priority, modify the
		 * type of the previous one to match that of the new one.
2658 2659 2660 2661
		 */
		if (!tmp->started) {
			list_add_tail(&roc->list, &tmp->dependents);
			tmp->duration = max(tmp->duration, roc->duration);
2662
			tmp->type = max(tmp->type, roc->type);
2663 2664 2665 2666 2667 2668 2669 2670 2671
			queued = true;
			break;
		}

		/* If it has already started, it's more difficult ... */
		if (local->ops->remain_on_channel) {
			/*
			 * In the offloaded ROC case, if it hasn't begun, add
			 * this new one to the dependent list to be handled
2672
			 * when the master one begins. If it has begun,
2673 2674 2675
			 * check if it fits entirely within the existing one,
			 * in which case it will just be dependent as well.
			 * Otherwise, schedule it by itself.
2676 2677 2678 2679 2680 2681 2682
			 */
			if (!tmp->hw_begun) {
				list_add_tail(&roc->list, &tmp->dependents);
				queued = true;
				break;
			}

2683
			if (ieee80211_coalesce_started_roc(local, roc, tmp))
2684 2685 2686 2687 2688 2689 2690 2691 2692 2693 2694 2695 2696 2697 2698 2699 2700 2701 2702 2703 2704 2705 2706 2707 2708 2709 2710 2711 2712 2713 2714 2715 2716
				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;
2717 2718
}

2719
static int ieee80211_remain_on_channel(struct wiphy *wiphy,
2720
				       struct wireless_dev *wdev,
2721 2722 2723 2724
				       struct ieee80211_channel *chan,
				       unsigned int duration,
				       u64 *cookie)
{
2725
	struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
2726
	struct ieee80211_local *local = sdata->local;
2727
	int ret;
2728

2729
	mutex_lock(&local->mtx);
2730
	ret = ieee80211_start_roc_work(local, sdata, chan,
2731 2732
				       duration, cookie, NULL,
				       IEEE80211_ROC_TYPE_NORMAL);
2733
	mutex_unlock(&local->mtx);
2734

2735
	return ret;
2736 2737
}

2738 2739
static int ieee80211_cancel_roc(struct ieee80211_local *local,
				u64 cookie, bool mgmt_tx)
2740
{
2741
	struct ieee80211_roc_work *roc, *tmp, *found = NULL;
2742 2743
	int ret;

2744 2745
	mutex_lock(&local->mtx);
	list_for_each_entry_safe(roc, tmp, &local->roc_list, list) {
2746 2747 2748
		struct ieee80211_roc_work *dep, *tmp2;

		list_for_each_entry_safe(dep, tmp2, &roc->dependents, list) {
2749
			if (!mgmt_tx && dep->cookie != cookie)
2750 2751 2752 2753 2754 2755 2756
				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);

2757
			ieee80211_roc_notify_destroy(dep, true);
2758 2759 2760
			return 0;
		}

2761
		if (!mgmt_tx && roc->cookie != cookie)
2762 2763 2764
			continue;
		else if (mgmt_tx && roc->mgmt_tx_cookie != cookie)
			continue;
2765

2766 2767 2768
		found = roc;
		break;
	}
2769

2770 2771 2772 2773
	if (!found) {
		mutex_unlock(&local->mtx);
		return -ENOENT;
	}
2774

2775 2776 2777 2778 2779 2780 2781
	/*
	 * 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.
	 */

2782 2783 2784 2785 2786 2787 2788 2789
	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;
			}
		}
2790

2791
		list_del(&found->list);
2792

2793 2794
		if (found->started)
			ieee80211_start_next_roc(local);
2795
		mutex_unlock(&local->mtx);
2796

2797
		ieee80211_roc_notify_destroy(found, true);
2798 2799 2800 2801
	} else {
		/* work may be pending so use it all the time */
		found->abort = true;
		ieee80211_queue_delayed_work(&local->hw, &found->work, 0);
2802 2803 2804

		mutex_unlock(&local->mtx);

2805 2806
		/* work will clean up etc */
		flush_delayed_work(&found->work);
2807 2808
		WARN_ON(!found->to_be_freed);
		kfree(found);
2809
	}
2810

2811
	return 0;
2812 2813
}

2814
static int ieee80211_cancel_remain_on_channel(struct wiphy *wiphy,
2815
					      struct wireless_dev *wdev,
2816
					      u64 cookie)
2817
{
2818
	struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
2819
	struct ieee80211_local *local = sdata->local;
2820

2821
	return ieee80211_cancel_roc(local, cookie, false);
2822 2823
}

2824 2825
static int ieee80211_start_radar_detection(struct wiphy *wiphy,
					   struct net_device *dev,
2826 2827
					   struct cfg80211_chan_def *chandef,
					   u32 cac_time_ms)
2828 2829 2830 2831 2832
{
	struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
	struct ieee80211_local *local = sdata->local;
	int err;

2833 2834 2835 2836 2837
	mutex_lock(&local->mtx);
	if (!list_empty(&local->roc_list) || local->scanning) {
		err = -EBUSY;
		goto out_unlock;
	}
2838 2839 2840 2841 2842 2843 2844 2845

	/* 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)
2846
		goto out_unlock;
2847 2848

	ieee80211_queue_delayed_work(&sdata->local->hw,
2849 2850
				     &sdata->dfs_cac_timer_work,
				     msecs_to_jiffies(cac_time_ms));
2851

2852 2853 2854
 out_unlock:
	mutex_unlock(&local->mtx);
	return err;
2855 2856
}

2857 2858 2859 2860 2861 2862 2863 2864 2865 2866 2867 2868 2869 2870 2871 2872 2873 2874 2875 2876 2877 2878 2879 2880 2881 2882 2883 2884 2885 2886 2887 2888 2889 2890 2891 2892 2893 2894 2895 2896 2897 2898 2899 2900 2901 2902 2903 2904 2905 2906 2907 2908 2909 2910 2911 2912
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;
}

2913
void ieee80211_csa_finish(struct ieee80211_vif *vif)
2914
{
2915
	struct ieee80211_sub_if_data *sdata = vif_to_sdata(vif);
2916

2917 2918 2919 2920
	ieee80211_queue_work(&sdata->local->hw,
			     &sdata->csa_finalize_work);
}
EXPORT_SYMBOL(ieee80211_csa_finish);
2921

2922 2923
static int ieee80211_set_after_csa_beacon(struct ieee80211_sub_if_data *sdata,
					  u32 *changed)
2924
{
2925
	int err;
2926

2927 2928
	switch (sdata->vif.type) {
	case NL80211_IFTYPE_AP:
2929 2930
		err = ieee80211_assign_beacon(sdata, sdata->u.ap.next_beacon,
					      NULL);
2931 2932 2933
		kfree(sdata->u.ap.next_beacon);
		sdata->u.ap.next_beacon = NULL;

2934
		if (err < 0)
2935 2936
			return err;
		*changed |= err;
2937 2938
		break;
	case NL80211_IFTYPE_ADHOC:
2939 2940
		err = ieee80211_ibss_finish_csa(sdata);
		if (err < 0)
2941 2942
			return err;
		*changed |= err;
2943
		break;
2944 2945 2946 2947
#ifdef CONFIG_MAC80211_MESH
	case NL80211_IFTYPE_MESH_POINT:
		err = ieee80211_mesh_finish_csa(sdata);
		if (err < 0)
2948 2949
			return err;
		*changed |= err;
2950 2951
		break;
#endif
2952 2953
	default:
		WARN_ON(1);
2954 2955 2956 2957 2958 2959
		return -EINVAL;
	}

	return 0;
}

2960
static int __ieee80211_csa_finalize(struct ieee80211_sub_if_data *sdata)
2961 2962 2963 2964 2965 2966 2967
{
	struct ieee80211_local *local = sdata->local;
	u32 changed = 0;
	int err;

	sdata_assert_lock(sdata);
	lockdep_assert_held(&local->mtx);
2968
	lockdep_assert_held(&local->chanctx_mtx);
2969

2970 2971 2972 2973 2974 2975
	/*
	 * using reservation isn't immediate as it may be deferred until later
	 * with multi-vif. once reservation is complete it will re-schedule the
	 * work with no reserved_chanctx so verify chandef to check if it
	 * completed successfully
	 */
2976

2977 2978 2979 2980 2981 2982 2983 2984 2985
	if (sdata->reserved_chanctx) {
		/*
		 * with multi-vif csa driver may call ieee80211_csa_finish()
		 * many times while waiting for other interfaces to use their
		 * reservations
		 */
		if (sdata->reserved_ready)
			return 0;

2986
		return ieee80211_vif_use_reserved_context(sdata);
2987
	}
2988

2989 2990 2991 2992
	if (!cfg80211_chandef_identical(&sdata->vif.bss_conf.chandef,
					&sdata->csa_chandef))
		return -EINVAL;

2993 2994 2995 2996
	sdata->vif.csa_active = false;

	err = ieee80211_set_after_csa_beacon(sdata, &changed);
	if (err)
2997
		return err;
2998

2999
	ieee80211_bss_info_change_notify(sdata, changed);
3000

3001 3002 3003 3004 3005
	if (sdata->csa_block_tx) {
		ieee80211_wake_vif_queues(local, sdata,
					  IEEE80211_QUEUE_STOP_REASON_CSA);
		sdata->csa_block_tx = false;
	}
3006

3007 3008 3009 3010 3011 3012
	err = drv_post_channel_switch(sdata);
	if (err)
		return err;

	cfg80211_ch_switch_notify(sdata->dev, &sdata->csa_chandef);

3013 3014 3015 3016 3017 3018 3019 3020 3021 3022
	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);
	}
3023 3024 3025 3026 3027 3028 3029
}

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);
3030
	struct ieee80211_local *local = sdata->local;
3031 3032

	sdata_lock(sdata);
3033
	mutex_lock(&local->mtx);
3034
	mutex_lock(&local->chanctx_mtx);
3035

3036 3037 3038 3039 3040 3041 3042 3043
	/* 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);
3044 3045

unlock:
3046
	mutex_unlock(&local->chanctx_mtx);
3047
	mutex_unlock(&local->mtx);
3048
	sdata_unlock(sdata);
3049 3050
}

3051 3052 3053
static int ieee80211_set_csa_beacon(struct ieee80211_sub_if_data *sdata,
				    struct cfg80211_csa_settings *params,
				    u32 *changed)
3054
{
3055
	struct ieee80211_csa_settings csa = {};
3056
	int err;
3057 3058 3059

	switch (sdata->vif.type) {
	case NL80211_IFTYPE_AP:
3060 3061 3062 3063 3064
		sdata->u.ap.next_beacon =
			cfg80211_beacon_dup(&params->beacon_after);
		if (!sdata->u.ap.next_beacon)
			return -ENOMEM;

3065 3066 3067 3068 3069 3070 3071 3072 3073 3074 3075 3076 3077 3078 3079 3080 3081 3082 3083
		/*
		 * 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;

3084 3085 3086 3087 3088
		if ((params->n_counter_offsets_beacon >
		     IEEE80211_MAX_CSA_COUNTERS_NUM) ||
		    (params->n_counter_offsets_presp >
		     IEEE80211_MAX_CSA_COUNTERS_NUM))
			return -EINVAL;
3089

3090 3091 3092 3093 3094
		csa.counter_offsets_beacon = params->counter_offsets_beacon;
		csa.counter_offsets_presp = params->counter_offsets_presp;
		csa.n_counter_offsets_beacon = params->n_counter_offsets_beacon;
		csa.n_counter_offsets_presp = params->n_counter_offsets_presp;
		csa.count = params->count;
3095

3096
		err = ieee80211_assign_beacon(sdata, &params->beacon_csa, &csa);
3097 3098 3099 3100
		if (err < 0) {
			kfree(sdata->u.ap.next_beacon);
			return err;
		}
3101
		*changed |= err;
3102

3103 3104 3105 3106 3107 3108 3109 3110 3111 3112 3113 3114 3115 3116 3117 3118 3119 3120 3121 3122 3123 3124 3125 3126 3127 3128 3129
		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;

3130 3131 3132 3133 3134
		/* see comments in the NL80211_IFTYPE_AP block */
		if (params->count > 1) {
			err = ieee80211_ibss_csa_beacon(sdata, params);
			if (err < 0)
				return err;
3135
			*changed |= err;
3136 3137 3138 3139
		}

		ieee80211_send_action_csa(sdata, params);

3140
		break;
3141
#ifdef CONFIG_MAC80211_MESH
3142 3143
	case NL80211_IFTYPE_MESH_POINT: {
		struct ieee80211_if_mesh *ifmsh = &sdata->u.mesh;
3144 3145 3146 3147 3148 3149 3150 3151 3152

		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;

3153
		if (ifmsh->csa_role == IEEE80211_MESH_CSA_ROLE_NONE) {
3154
			ifmsh->csa_role = IEEE80211_MESH_CSA_ROLE_INIT;
3155 3156 3157 3158 3159
			if (!ifmsh->pre_value)
				ifmsh->pre_value = 1;
			else
				ifmsh->pre_value++;
		}
3160

3161 3162 3163 3164 3165 3166 3167
		/* 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;
			}
3168
			*changed |= err;
3169
		}
3170 3171 3172 3173

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

3174
		break;
3175
		}
3176
#endif
3177 3178 3179 3180
	default:
		return -EOPNOTSUPP;
	}

3181 3182 3183
	return 0;
}

3184 3185 3186
static int
__ieee80211_channel_switch(struct wiphy *wiphy, struct net_device *dev,
			   struct cfg80211_csa_settings *params)
3187 3188 3189
{
	struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
	struct ieee80211_local *local = sdata->local;
3190
	struct ieee80211_channel_switch ch_switch;
3191
	struct ieee80211_chanctx_conf *conf;
3192
	struct ieee80211_chanctx *chanctx;
3193 3194
	u32 changed = 0;
	int err;
3195 3196

	sdata_assert_lock(sdata);
3197
	lockdep_assert_held(&local->mtx);
3198 3199 3200 3201 3202 3203 3204 3205 3206 3207 3208

	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;

3209 3210 3211 3212
	/* don't allow another channel switch if one is already active. */
	if (sdata->vif.csa_active)
		return -EBUSY;

3213 3214 3215 3216
	mutex_lock(&local->chanctx_mtx);
	conf = rcu_dereference_protected(sdata->vif.chanctx_conf,
					 lockdep_is_held(&local->chanctx_mtx));
	if (!conf) {
3217 3218
		err = -EBUSY;
		goto out;
3219 3220
	}

3221
	chanctx = container_of(conf, struct ieee80211_chanctx, conf);
3222 3223 3224
	if (!chanctx) {
		err = -EBUSY;
		goto out;
3225 3226
	}

3227 3228 3229 3230 3231 3232
	ch_switch.timestamp = 0;
	ch_switch.device_timestamp = 0;
	ch_switch.block_tx = params->block_tx;
	ch_switch.chandef = params->chandef;
	ch_switch.count = params->count;

3233 3234 3235 3236
	err = drv_pre_channel_switch(sdata, &ch_switch);
	if (err)
		goto out;

3237 3238 3239 3240 3241
	err = ieee80211_vif_reserve_chanctx(sdata, &params->chandef,
					    chanctx->mode,
					    params->radar_required);
	if (err)
		goto out;
3242

3243 3244 3245 3246 3247 3248
	/* if reservation is invalid then this will fail */
	err = ieee80211_check_combinations(sdata, NULL, chanctx->mode, 0);
	if (err) {
		ieee80211_vif_unreserve_chanctx(sdata);
		goto out;
	}
3249 3250

	err = ieee80211_set_csa_beacon(sdata, params, &changed);
3251 3252 3253 3254
	if (err) {
		ieee80211_vif_unreserve_chanctx(sdata);
		goto out;
	}
3255

3256
	sdata->csa_chandef = params->chandef;
3257
	sdata->csa_block_tx = params->block_tx;
3258 3259
	sdata->vif.csa_active = true;

3260
	if (sdata->csa_block_tx)
3261 3262
		ieee80211_stop_vif_queues(local, sdata,
					  IEEE80211_QUEUE_STOP_REASON_CSA);
3263

3264 3265 3266
	cfg80211_ch_switch_started_notify(sdata->dev, &sdata->csa_chandef,
					  params->count);

3267 3268 3269 3270 3271 3272 3273
	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);
	}
3274

3275 3276 3277
out:
	mutex_unlock(&local->chanctx_mtx);
	return err;
3278 3279
}

3280 3281 3282 3283 3284 3285 3286 3287 3288 3289 3290 3291 3292 3293
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;
}

3294 3295 3296 3297 3298 3299 3300 3301 3302 3303 3304 3305 3306 3307 3308 3309 3310 3311 3312 3313 3314 3315 3316 3317 3318 3319 3320 3321 3322 3323
static struct sk_buff *ieee80211_make_ack_skb(struct ieee80211_local *local,
					      struct sk_buff *skb, u64 *cookie,
					      gfp_t gfp)
{
	unsigned long spin_flags;
	struct sk_buff *ack_skb;
	int id;

	ack_skb = skb_copy(skb, gfp);
	if (!ack_skb)
		return ERR_PTR(-ENOMEM);

	spin_lock_irqsave(&local->ack_status_lock, spin_flags);
	id = idr_alloc(&local->ack_status_frames, ack_skb,
		       1, 0x10000, GFP_ATOMIC);
	spin_unlock_irqrestore(&local->ack_status_lock, spin_flags);

	if (id < 0) {
		kfree_skb(ack_skb);
		return ERR_PTR(-ENOMEM);
	}

	IEEE80211_SKB_CB(skb)->ack_frame_id = id;

	*cookie = ieee80211_mgmt_tx_cookie(local);
	IEEE80211_SKB_CB(ack_skb)->ack.cookie = *cookie;

	return ack_skb;
}

3324
static int ieee80211_mgmt_tx(struct wiphy *wiphy, struct wireless_dev *wdev,
3325 3326
			     struct cfg80211_mgmt_tx_params *params,
			     u64 *cookie)
3327
{
3328
	struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
3329
	struct ieee80211_local *local = sdata->local;
3330
	struct sk_buff *skb, *ack_skb;
3331
	struct sta_info *sta;
3332
	const struct ieee80211_mgmt *mgmt = (void *)params->buf;
3333
	bool need_offchan = false;
3334
	u32 flags;
3335
	int ret;
3336
	u8 *data;
3337

3338
	if (params->dont_wait_for_ack)
3339 3340 3341 3342 3343
		flags = IEEE80211_TX_CTL_NO_ACK;
	else
		flags = IEEE80211_TX_INTFL_NL80211_FRAME_TX |
			IEEE80211_TX_CTL_REQ_TX_STATUS;

3344
	if (params->no_cck)
3345 3346
		flags |= IEEE80211_TX_CTL_NO_CCK_RATE;

3347 3348
	switch (sdata->vif.type) {
	case NL80211_IFTYPE_ADHOC:
3349 3350 3351 3352 3353 3354 3355 3356 3357 3358
		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
3359 3360 3361
	case NL80211_IFTYPE_AP:
	case NL80211_IFTYPE_AP_VLAN:
	case NL80211_IFTYPE_P2P_GO:
3362 3363 3364 3365
		if (sdata->vif.type != NL80211_IFTYPE_ADHOC &&
		    !ieee80211_vif_is_mesh(&sdata->vif) &&
		    !rcu_access_pointer(sdata->bss->beacon))
			need_offchan = true;
3366
		if (!ieee80211_is_action(mgmt->frame_control) ||
3367
		    mgmt->u.action.category == WLAN_CATEGORY_PUBLIC ||
3368 3369
		    mgmt->u.action.category == WLAN_CATEGORY_SELF_PROTECTED ||
		    mgmt->u.action.category == WLAN_CATEGORY_SPECTRUM_MGMT)
3370 3371 3372 3373 3374 3375 3376 3377
			break;
		rcu_read_lock();
		sta = sta_info_get(sdata, mgmt->da);
		rcu_read_unlock();
		if (!sta)
			return -ENOLINK;
		break;
	case NL80211_IFTYPE_STATION:
3378
	case NL80211_IFTYPE_P2P_CLIENT:
3379 3380 3381 3382 3383 3384
		sdata_lock(sdata);
		if (!sdata->u.mgd.associated ||
		    (params->offchan && params->wait &&
		     local->ops->remain_on_channel &&
		     memcmp(sdata->u.mgd.associated->bssid,
			    mgmt->bssid, ETH_ALEN)))
3385
			need_offchan = true;
3386
		sdata_unlock(sdata);
3387
		break;
3388 3389 3390
	case NL80211_IFTYPE_P2P_DEVICE:
		need_offchan = true;
		break;
3391 3392 3393 3394
	default:
		return -EOPNOTSUPP;
	}

3395 3396 3397
	/* configurations requiring offchan cannot work if no channel has been
	 * specified
	 */
3398
	if (need_offchan && !params->chan)
3399 3400
		return -EINVAL;

3401 3402 3403 3404
	mutex_lock(&local->mtx);

	/* Check if the operating channel is the requested channel */
	if (!need_offchan) {
J
Johannes Berg 已提交
3405 3406 3407 3408 3409
		struct ieee80211_chanctx_conf *chanctx_conf;

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

3410
		if (chanctx_conf) {
3411 3412 3413 3414
			need_offchan = params->chan &&
				       (params->chan !=
					chanctx_conf->def.chan);
		} else if (!params->chan) {
3415 3416 3417 3418
			ret = -EINVAL;
			rcu_read_unlock();
			goto out_unlock;
		} else {
3419
			need_offchan = true;
3420
		}
J
Johannes Berg 已提交
3421
		rcu_read_unlock();
3422 3423
	}

3424
	if (need_offchan && !params->offchan) {
3425 3426 3427 3428
		ret = -EBUSY;
		goto out_unlock;
	}

3429
	skb = dev_alloc_skb(local->hw.extra_tx_headroom + params->len);
3430 3431 3432 3433
	if (!skb) {
		ret = -ENOMEM;
		goto out_unlock;
	}
3434 3435
	skb_reserve(skb, local->hw.extra_tx_headroom);

3436 3437 3438 3439 3440 3441
	data = skb_put(skb, params->len);
	memcpy(data, params->buf, params->len);

	/* Update CSA counters */
	if (sdata->vif.csa_active &&
	    (sdata->vif.type == NL80211_IFTYPE_AP ||
3442
	     sdata->vif.type == NL80211_IFTYPE_MESH_POINT ||
3443 3444 3445
	     sdata->vif.type == NL80211_IFTYPE_ADHOC) &&
	    params->n_csa_offsets) {
		int i;
3446
		struct beacon_data *beacon = NULL;
3447

3448 3449 3450 3451 3452 3453 3454 3455 3456 3457 3458 3459 3460 3461 3462
		rcu_read_lock();

		if (sdata->vif.type == NL80211_IFTYPE_AP)
			beacon = rcu_dereference(sdata->u.ap.beacon);
		else if (sdata->vif.type == NL80211_IFTYPE_ADHOC)
			beacon = rcu_dereference(sdata->u.ibss.presp);
		else if (ieee80211_vif_is_mesh(&sdata->vif))
			beacon = rcu_dereference(sdata->u.mesh.beacon);

		if (beacon)
			for (i = 0; i < params->n_csa_offsets; i++)
				data[params->csa_offsets[i]] =
					beacon->csa_current_counter;

		rcu_read_unlock();
3463
	}
3464 3465 3466 3467 3468

	IEEE80211_SKB_CB(skb)->flags = flags;

	skb->dev = sdata->dev;

3469
	if (!params->dont_wait_for_ack) {
3470
		/* make a copy to preserve the frame contents
3471 3472
		 * in case of encryption.
		 */
3473 3474 3475 3476
		ack_skb = ieee80211_make_ack_skb(local, skb, cookie,
						 GFP_KERNEL);
		if (IS_ERR(ack_skb)) {
			ret = PTR_ERR(ack_skb);
3477 3478 3479 3480 3481 3482 3483 3484
			kfree_skb(skb);
			goto out_unlock;
		}
	} else {
		/* for cookie below */
		ack_skb = skb;
	}

3485
	if (!need_offchan) {
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
	if (ieee80211_hw_check(&local->hw, QUEUE_CONTROL))
3494 3495
		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_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
3572 3573 3574 3575 3576 3577
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;
3578
	struct sk_buff *skb, *ack_skb;
J
Johannes Berg 已提交
3579 3580 3581 3582 3583
	int size = sizeof(*nullfunc);
	__le16 fc;
	bool qos;
	struct ieee80211_tx_info *info;
	struct sta_info *sta;
J
Johannes Berg 已提交
3584 3585
	struct ieee80211_chanctx_conf *chanctx_conf;
	enum ieee80211_band band;
3586 3587 3588 3589
	int ret;

	/* the lock is needed to assign the cookie later */
	mutex_lock(&local->mtx);
J
Johannes Berg 已提交
3590 3591

	rcu_read_lock();
J
Johannes Berg 已提交
3592 3593
	chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf);
	if (WARN_ON(!chanctx_conf)) {
3594 3595
		ret = -EINVAL;
		goto unlock;
J
Johannes Berg 已提交
3596
	}
3597
	band = chanctx_conf->def.chan->band;
3598
	sta = sta_info_get_bss(sdata, peer);
3599
	if (sta) {
3600
		qos = sta->sta.wme;
3601
	} else {
3602 3603
		ret = -ENOLINK;
		goto unlock;
3604
	}
J
Johannes Berg 已提交
3605 3606 3607 3608 3609 3610 3611 3612 3613 3614 3615 3616 3617

	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
3618
	if (!skb) {
3619 3620
		ret = -ENOMEM;
		goto unlock;
J
Johannes Berg 已提交
3621
	}
J
Johannes Berg 已提交
3622 3623 3624 3625 3626 3627 3628 3629 3630 3631 3632 3633 3634 3635 3636 3637 3638

	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;
3639
	info->band = band;
J
Johannes Berg 已提交
3640 3641 3642 3643 3644 3645

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

3646 3647 3648 3649 3650 3651 3652
	ack_skb = ieee80211_make_ack_skb(local, skb, cookie, GFP_ATOMIC);
	if (IS_ERR(ack_skb)) {
		kfree_skb(skb);
		ret = PTR_ERR(ack_skb);
		goto unlock;
	}

J
Johannes Berg 已提交
3653
	local_bh_disable();
3654
	ieee80211_xmit(sdata, sta, skb);
J
Johannes Berg 已提交
3655
	local_bh_enable();
3656 3657 3658

	ret = 0;
unlock:
J
Johannes Berg 已提交
3659
	rcu_read_unlock();
3660
	mutex_unlock(&local->mtx);
J
Johannes Berg 已提交
3661

3662
	return ret;
J
Johannes Berg 已提交
3663 3664
}

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
	chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf);
	if (chanctx_conf) {
3677
		*chandef = sdata->vif.bss_conf.chandef;
3678 3679 3680 3681 3682 3683 3684
		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 3741 3742 3743 3744 3745 3746 3747 3748 3749 3750 3751 3752 3753 3754 3755 3756 3757 3758 3759 3760 3761 3762 3763 3764 3765 3766 3767 3768 3769 3770 3771 3772 3773 3774 3775 3776 3777 3778 3779 3780 3781 3782 3783 3784 3785 3786 3787 3788 3789 3790 3791
static int ieee80211_add_tx_ts(struct wiphy *wiphy, struct net_device *dev,
			       u8 tsid, const u8 *peer, u8 up,
			       u16 admitted_time)
{
	struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
	struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
	int ac = ieee802_1d_to_ac[up];

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

	if (!(sdata->wmm_acm & BIT(up)))
		return -EINVAL;

	if (ifmgd->tx_tspec[ac].admitted_time)
		return -EBUSY;

	if (admitted_time) {
		ifmgd->tx_tspec[ac].admitted_time = 32 * admitted_time;
		ifmgd->tx_tspec[ac].tsid = tsid;
		ifmgd->tx_tspec[ac].up = up;
	}

	return 0;
}

static int ieee80211_del_tx_ts(struct wiphy *wiphy, struct net_device *dev,
			       u8 tsid, const u8 *peer)
{
	struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
	struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
	struct ieee80211_local *local = wiphy_priv(wiphy);
	int ac;

	for (ac = 0; ac < IEEE80211_NUM_ACS; ac++) {
		struct ieee80211_sta_tx_tspec *tx_tspec = &ifmgd->tx_tspec[ac];

		/* skip unused entries */
		if (!tx_tspec->admitted_time)
			continue;

		if (tx_tspec->tsid != tsid)
			continue;

		/* due to this new packets will be reassigned to non-ACM ACs */
		tx_tspec->up = -1;

		/* Make sure that all packets have been sent to avoid to
		 * restore the QoS params on packets that are still on the
		 * queues.
		 */
		synchronize_net();
3792
		ieee80211_flush_queues(local, sdata, false);
3793 3794 3795 3796 3797 3798 3799 3800 3801 3802 3803 3804 3805 3806 3807 3808 3809

		/* restore the normal QoS parameters
		 * (unconditionally to avoid races)
		 */
		tx_tspec->action = TX_TSPEC_ACTION_STOP_DOWNGRADE;
		tx_tspec->downgraded = false;
		ieee80211_sta_handle_tspec_ac_params(sdata);

		/* finally clear all the data */
		memset(tx_tspec, 0, sizeof(*tx_tspec));

		return 0;
	}

	return -ENOENT;
}

3810
const struct cfg80211_ops mac80211_config_ops = {
3811 3812
	.add_virtual_intf = ieee80211_add_iface,
	.del_virtual_intf = ieee80211_del_iface,
3813
	.change_virtual_intf = ieee80211_change_iface,
3814 3815
	.start_p2p_device = ieee80211_start_p2p_device,
	.stop_p2p_device = ieee80211_stop_p2p_device,
3816 3817
	.add_key = ieee80211_add_key,
	.del_key = ieee80211_del_key,
3818
	.get_key = ieee80211_get_key,
3819
	.set_default_key = ieee80211_config_default_key,
3820
	.set_default_mgmt_key = ieee80211_config_default_mgmt_key,
3821 3822 3823
	.start_ap = ieee80211_start_ap,
	.change_beacon = ieee80211_change_beacon,
	.stop_ap = ieee80211_stop_ap,
3824 3825 3826
	.add_station = ieee80211_add_station,
	.del_station = ieee80211_del_station,
	.change_station = ieee80211_change_station,
3827
	.get_station = ieee80211_get_station,
3828
	.dump_station = ieee80211_dump_station,
3829
	.dump_survey = ieee80211_dump_survey,
3830 3831 3832 3833 3834 3835
#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,
3836 3837
	.get_mpp = ieee80211_get_mpp,
	.dump_mpp = ieee80211_dump_mpp,
3838 3839
	.update_mesh_config = ieee80211_update_mesh_config,
	.get_mesh_config = ieee80211_get_mesh_config,
3840 3841
	.join_mesh = ieee80211_join_mesh,
	.leave_mesh = ieee80211_leave_mesh,
3842
#endif
3843 3844
	.join_ocb = ieee80211_join_ocb,
	.leave_ocb = ieee80211_leave_ocb,
3845
	.change_bss = ieee80211_change_bss,
3846
	.set_txq_params = ieee80211_set_txq_params,
3847
	.set_monitor_channel = ieee80211_set_monitor_channel,
3848 3849
	.suspend = ieee80211_suspend,
	.resume = ieee80211_resume,
3850
	.scan = ieee80211_scan,
3851 3852
	.sched_scan_start = ieee80211_sched_scan_start,
	.sched_scan_stop = ieee80211_sched_scan_stop,
3853 3854 3855 3856
	.auth = ieee80211_auth,
	.assoc = ieee80211_assoc,
	.deauth = ieee80211_deauth,
	.disassoc = ieee80211_disassoc,
3857 3858
	.join_ibss = ieee80211_join_ibss,
	.leave_ibss = ieee80211_leave_ibss,
3859
	.set_mcast_rate = ieee80211_set_mcast_rate,
3860
	.set_wiphy_params = ieee80211_set_wiphy_params,
3861 3862
	.set_tx_power = ieee80211_set_tx_power,
	.get_tx_power = ieee80211_get_tx_power,
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	.set_wds_peer = ieee80211_set_wds_peer,
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	.rfkill_poll = ieee80211_rfkill_poll,
3865
	CFG80211_TESTMODE_CMD(ieee80211_testmode_cmd)
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	CFG80211_TESTMODE_DUMP(ieee80211_testmode_dump)
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	.set_power_mgmt = ieee80211_set_power_mgmt,
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	.set_bitrate_mask = ieee80211_set_bitrate_mask,
3869 3870
	.remain_on_channel = ieee80211_remain_on_channel,
	.cancel_remain_on_channel = ieee80211_cancel_remain_on_channel,
3871
	.mgmt_tx = ieee80211_mgmt_tx,
3872
	.mgmt_tx_cancel_wait = ieee80211_mgmt_tx_cancel_wait,
3873
	.set_cqm_rssi_config = ieee80211_set_cqm_rssi_config,
3874
	.mgmt_frame_register = ieee80211_mgmt_frame_register,
3875 3876
	.set_antenna = ieee80211_set_antenna,
	.get_antenna = ieee80211_get_antenna,
3877
	.set_rekey_data = ieee80211_set_rekey_data,
3878 3879
	.tdls_oper = ieee80211_tdls_oper,
	.tdls_mgmt = ieee80211_tdls_mgmt,
3880 3881
	.tdls_channel_switch = ieee80211_tdls_channel_switch,
	.tdls_cancel_channel_switch = ieee80211_tdls_cancel_channel_switch,
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	.probe_client = ieee80211_probe_client,
3883
	.set_noack_map = ieee80211_set_noack_map,
3884 3885 3886
#ifdef CONFIG_PM
	.set_wakeup = ieee80211_set_wakeup,
#endif
3887
	.get_channel = ieee80211_cfg_get_channel,
3888
	.start_radar_detection = ieee80211_start_radar_detection,
3889
	.channel_switch = ieee80211_channel_switch,
3890
	.set_qos_map = ieee80211_set_qos_map,
3891
	.set_ap_chanwidth = ieee80211_set_ap_chanwidth,
3892 3893
	.add_tx_ts = ieee80211_add_tx_ts,
	.del_tx_ts = ieee80211_del_tx_ts,
3894
};