cfg.c 101.0 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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41
	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);
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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);
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	}
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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;
524
		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)
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{
	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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782 783 784 785 786 787 788
	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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Johannes Berg 已提交
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
static int sta_apply_parameters(struct ieee80211_local *local,
				struct sta_info *sta,
				struct station_parameters *params)
1025
{
1026
	int ret = 0;
1027
	struct ieee80211_supported_band *sband;
1028
	struct ieee80211_sub_if_data *sdata = sta->sdata;
J
Johannes Berg 已提交
1029
	enum ieee80211_band band = ieee80211_get_sdata_band(sdata);
1030
	u32 mask, set;
1031

J
Johannes Berg 已提交
1032
	sband = local->hw.wiphy->bands[band];
J
Johannes Berg 已提交
1033

1034 1035
	mask = params->sta_flags_mask;
	set = params->sta_flags_set;
J
Johannes Berg 已提交
1036

1037 1038 1039 1040 1041 1042 1043 1044 1045
	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);
1046 1047 1048 1049 1050 1051 1052 1053 1054 1055 1056 1057
	} 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);
		}
1058
	}
1059

1060 1061 1062 1063
	if (mask & BIT(NL80211_STA_FLAG_WME) &&
	    local->hw.queues >= IEEE80211_NUM_ACS)
		sta->sta.wme = set & BIT(NL80211_STA_FLAG_WME);

1064 1065 1066 1067 1068 1069
	/* 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;
	}
1070

1071 1072
	if (mask & BIT(NL80211_STA_FLAG_SHORT_PREAMBLE)) {
		if (set & BIT(NL80211_STA_FLAG_SHORT_PREAMBLE))
J
Johannes Berg 已提交
1073 1074 1075
			set_sta_flag(sta, WLAN_STA_SHORT_PREAMBLE);
		else
			clear_sta_flag(sta, WLAN_STA_SHORT_PREAMBLE);
1076
	}
1077

1078 1079
	if (mask & BIT(NL80211_STA_FLAG_MFP)) {
		if (set & BIT(NL80211_STA_FLAG_MFP))
J
Johannes Berg 已提交
1080 1081 1082
			set_sta_flag(sta, WLAN_STA_MFP);
		else
			clear_sta_flag(sta, WLAN_STA_MFP);
1083
	}
1084

1085 1086
	if (mask & BIT(NL80211_STA_FLAG_TDLS_PEER)) {
		if (set & BIT(NL80211_STA_FLAG_TDLS_PEER))
J
Johannes Berg 已提交
1087 1088 1089
			set_sta_flag(sta, WLAN_STA_TDLS_PEER);
		else
			clear_sta_flag(sta, WLAN_STA_TDLS_PEER);
1090
	}
1091

1092 1093 1094 1095 1096 1097 1098
	/* 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);

1099 1100 1101 1102
	if (params->sta_modify_mask & STATION_PARAM_APPLY_UAPSD) {
		sta->sta.uapsd_queues = params->uapsd_queues;
		sta->sta.max_sp = params->max_sp;
	}
1103

1104 1105 1106 1107 1108 1109 1110
	/*
	 * 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
1111
	/*
1112 1113 1114 1115 1116
	 * 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
1117 1118
	 */

1119 1120 1121 1122
	if (params->listen_interval >= 0)
		sta->listen_interval = params->listen_interval;

	if (params->supported_rates) {
1123 1124 1125 1126
		ieee80211_parse_bitrates(&sdata->vif.bss_conf.chandef,
					 sband, params->supported_rates,
					 params->supported_rates_len,
					 &sta->sta.supp_rates[band]);
1127
	}
1128

J
Johannes Berg 已提交
1129
	if (params->ht_capa)
B
Ben Greear 已提交
1130
		ieee80211_ht_cap_ie_to_sta_ht_cap(sdata, sband,
1131
						  params->ht_capa, sta);
1132

M
Mahesh Palivela 已提交
1133 1134
	if (params->vht_capa)
		ieee80211_vht_cap_ie_to_sta_vht_cap(sdata, sband,
1135
						    params->vht_capa, sta);
M
Mahesh Palivela 已提交
1136

1137 1138 1139 1140 1141 1142 1143 1144 1145
	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);
	}

1146
	if (ieee80211_vif_is_mesh(&sdata->vif)) {
1147
#ifdef CONFIG_MAC80211_MESH
1148
		u32 changed = 0;
1149 1150

		if (params->sta_modify_mask & STATION_PARAM_APPLY_PLINK_STATE) {
1151
			switch (params->plink_state) {
1152
			case NL80211_PLINK_ESTAB:
1153
				if (sta->mesh->plink_state != NL80211_PLINK_ESTAB)
1154 1155
					changed = mesh_plink_inc_estab_count(
							sdata);
1156
				sta->mesh->plink_state = params->plink_state;
M
Marco Porsch 已提交
1157 1158

				ieee80211_mps_sta_status_update(sta);
1159 1160
				changed |= ieee80211_mps_set_sta_local_pm(sta,
					      sdata->u.mesh.mshcfg.power_mode);
1161 1162
				break;
			case NL80211_PLINK_LISTEN:
1163
			case NL80211_PLINK_BLOCKED:
1164 1165 1166 1167
			case NL80211_PLINK_OPN_SNT:
			case NL80211_PLINK_OPN_RCVD:
			case NL80211_PLINK_CNF_RCVD:
			case NL80211_PLINK_HOLDING:
1168
				if (sta->mesh->plink_state == NL80211_PLINK_ESTAB)
1169 1170
					changed = mesh_plink_dec_estab_count(
							sdata);
1171
				sta->mesh->plink_state = params->plink_state;
M
Marco Porsch 已提交
1172 1173

				ieee80211_mps_sta_status_update(sta);
1174 1175
				changed |= ieee80211_mps_set_sta_local_pm(sta,
						NL80211_MESH_POWER_UNKNOWN);
1176 1177 1178 1179 1180
				break;
			default:
				/*  nothing  */
				break;
			}
1181 1182 1183 1184 1185 1186 1187 1188 1189 1190 1191 1192
		}

		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;
1193
		}
M
Marco Porsch 已提交
1194 1195

		if (params->local_pm)
1196 1197 1198
			changed |=
			      ieee80211_mps_set_sta_local_pm(sta,
							     params->local_pm);
1199
		ieee80211_mbss_info_change_notify(sdata, changed);
1200
#endif
J
Johannes Berg 已提交
1201
	}
1202

1203 1204 1205 1206 1207 1208 1209
	/* 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;
	}

1210
	return 0;
1211 1212 1213
}

static int ieee80211_add_station(struct wiphy *wiphy, struct net_device *dev,
1214 1215
				 const u8 *mac,
				 struct station_parameters *params)
1216
{
1217
	struct ieee80211_local *local = wiphy_priv(wiphy);
1218 1219
	struct sta_info *sta;
	struct ieee80211_sub_if_data *sdata;
J
Johannes Berg 已提交
1220
	int err;
1221
	int layer2_update;
1222 1223 1224 1225

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

1226 1227
		if (sdata->vif.type != NL80211_IFTYPE_AP_VLAN &&
		    sdata->vif.type != NL80211_IFTYPE_AP)
1228 1229 1230 1231
			return -EINVAL;
	} else
		sdata = IEEE80211_DEV_TO_SUB_IF(dev);

1232
	if (ether_addr_equal(mac, sdata->vif.addr))
1233 1234 1235 1236 1237 1238
		return -EINVAL;

	if (is_multicast_ether_addr(mac))
		return -EINVAL;

	sta = sta_info_alloc(sdata, mac, GFP_KERNEL);
J
Johannes Berg 已提交
1239 1240
	if (!sta)
		return -ENOMEM;
1241

1242 1243 1244 1245
	/*
	 * defaults -- if userspace wants something else we'll
	 * change it accordingly in sta_apply_parameters()
	 */
1246 1247 1248
	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);
1249 1250
	} else {
		sta->sta.tdls = true;
1251
	}
1252

1253 1254 1255 1256 1257
	err = sta_apply_parameters(local, sta, params);
	if (err) {
		sta_info_free(local, sta);
		return err;
	}
1258

1259
	/*
1260 1261
	 * for TDLS, rate control should be initialized only when
	 * rates are known and station is marked authorized
1262 1263 1264
	 */
	if (!test_sta_flag(sta, WLAN_STA_TDLS_PEER))
		rate_control_rate_init(sta);
1265

1266 1267 1268
	layer2_update = sdata->vif.type == NL80211_IFTYPE_AP_VLAN ||
		sdata->vif.type == NL80211_IFTYPE_AP;

1269
	err = sta_info_insert_rcu(sta);
J
Johannes Berg 已提交
1270 1271 1272 1273 1274
	if (err) {
		rcu_read_unlock();
		return err;
	}

1275
	if (layer2_update)
J
Johannes Berg 已提交
1276 1277 1278 1279
		ieee80211_send_layer2_update(sta);

	rcu_read_unlock();

1280 1281 1282 1283
	return 0;
}

static int ieee80211_del_station(struct wiphy *wiphy, struct net_device *dev,
1284
				 struct station_del_parameters *params)
1285
{
1286
	struct ieee80211_sub_if_data *sdata;
1287

1288 1289
	sdata = IEEE80211_DEV_TO_SUB_IF(dev);

1290 1291
	if (params->mac)
		return sta_info_destroy_addr_bss(sdata, params->mac);
1292

1293
	sta_info_flush(sdata);
1294 1295 1296 1297
	return 0;
}

static int ieee80211_change_station(struct wiphy *wiphy,
1298
				    struct net_device *dev, const u8 *mac,
1299 1300
				    struct station_parameters *params)
{
1301
	struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1302
	struct ieee80211_local *local = wiphy_priv(wiphy);
1303 1304
	struct sta_info *sta;
	struct ieee80211_sub_if_data *vlansdata;
1305
	enum cfg80211_station_type statype;
1306
	int err;
1307

1308
	mutex_lock(&local->sta_mtx);
J
Johannes Berg 已提交
1309

1310
	sta = sta_info_get_bss(sdata, mac);
J
Johannes Berg 已提交
1311
	if (!sta) {
1312 1313
		err = -ENOENT;
		goto out_err;
J
Johannes Berg 已提交
1314
	}
1315

1316 1317
	switch (sdata->vif.type) {
	case NL80211_IFTYPE_MESH_POINT:
1318
		if (sdata->u.mesh.user_mpm)
1319
			statype = CFG80211_STA_MESH_PEER_USER;
1320
		else
1321
			statype = CFG80211_STA_MESH_PEER_KERNEL;
1322 1323 1324 1325 1326 1327 1328 1329 1330 1331 1332 1333 1334 1335 1336 1337 1338 1339 1340 1341 1342
		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;
1343 1344
	}

1345 1346 1347 1348
	err = cfg80211_check_station_change(wiphy, params, statype);
	if (err)
		goto out_err;

1349
	if (params->vlan && params->vlan != sta->sdata->dev) {
1350 1351 1352
		bool prev_4addr = false;
		bool new_4addr = false;

1353 1354
		vlansdata = IEEE80211_DEV_TO_SUB_IF(params->vlan);

1355
		if (params->vlan->ieee80211_ptr->use_4addr) {
J
Johannes Berg 已提交
1356
			if (vlansdata->u.vlan.sta) {
1357 1358
				err = -EBUSY;
				goto out_err;
J
Johannes Berg 已提交
1359
			}
1360

1361
			rcu_assign_pointer(vlansdata->u.vlan.sta, sta);
1362 1363 1364 1365 1366
			new_4addr = true;
		}

		if (sta->sdata->vif.type == NL80211_IFTYPE_AP_VLAN &&
		    sta->sdata->u.vlan.sta) {
M
Monam Agarwal 已提交
1367
			RCU_INIT_POINTER(sta->sdata->u.vlan.sta, NULL);
1368
			prev_4addr = true;
1369 1370
		}

1371
		sta->sdata = vlansdata;
1372
		ieee80211_check_fast_xmit(sta);
1373 1374 1375 1376 1377 1378 1379 1380 1381

		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);
		}

1382 1383 1384
		ieee80211_send_layer2_update(sta);
	}

1385
	err = sta_apply_parameters(local, sta, params);
1386 1387
	if (err)
		goto out_err;
1388

1389
	mutex_unlock(&local->sta_mtx);
J
Johannes Berg 已提交
1390

1391 1392 1393 1394 1395 1396 1397 1398 1399 1400 1401 1402 1403 1404
	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);
	}

1405
	if (sdata->vif.type == NL80211_IFTYPE_STATION &&
E
Eliad Peller 已提交
1406
	    params->sta_flags_mask & BIT(NL80211_STA_FLAG_AUTHORIZED)) {
1407
		ieee80211_recalc_ps(local, -1);
E
Eliad Peller 已提交
1408 1409
		ieee80211_recalc_ps_vif(sdata);
	}
1410

1411
	return 0;
1412 1413 1414
out_err:
	mutex_unlock(&local->sta_mtx);
	return err;
1415 1416
}

1417 1418
#ifdef CONFIG_MAC80211_MESH
static int ieee80211_add_mpath(struct wiphy *wiphy, struct net_device *dev,
1419
			       const u8 *dst, const u8 *next_hop)
1420
{
1421
	struct ieee80211_sub_if_data *sdata;
1422 1423 1424
	struct mesh_path *mpath;
	struct sta_info *sta;

1425 1426
	sdata = IEEE80211_DEV_TO_SUB_IF(dev);

1427
	rcu_read_lock();
1428
	sta = sta_info_get(sdata, next_hop);
1429 1430
	if (!sta) {
		rcu_read_unlock();
1431
		return -ENOENT;
1432
	}
1433

1434 1435
	mpath = mesh_path_add(sdata, dst);
	if (IS_ERR(mpath)) {
1436
		rcu_read_unlock();
1437
		return PTR_ERR(mpath);
1438
	}
1439 1440

	mesh_path_fix_nexthop(mpath, sta);
1441

1442 1443 1444 1445 1446
	rcu_read_unlock();
	return 0;
}

static int ieee80211_del_mpath(struct wiphy *wiphy, struct net_device *dev,
1447
			       const u8 *dst)
1448
{
1449 1450
	struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);

1451
	if (dst)
J
Johannes Berg 已提交
1452
		return mesh_path_del(sdata, dst);
1453

1454
	mesh_path_flush_by_iface(sdata);
1455 1456 1457
	return 0;
}

1458 1459
static int ieee80211_change_mpath(struct wiphy *wiphy, struct net_device *dev,
				  const u8 *dst, const u8 *next_hop)
1460
{
1461
	struct ieee80211_sub_if_data *sdata;
1462 1463 1464
	struct mesh_path *mpath;
	struct sta_info *sta;

1465 1466
	sdata = IEEE80211_DEV_TO_SUB_IF(dev);

1467 1468
	rcu_read_lock();

1469
	sta = sta_info_get(sdata, next_hop);
1470 1471
	if (!sta) {
		rcu_read_unlock();
1472
		return -ENOENT;
1473
	}
1474

J
Johannes Berg 已提交
1475
	mpath = mesh_path_lookup(sdata, dst);
1476 1477 1478 1479 1480 1481
	if (!mpath) {
		rcu_read_unlock();
		return -ENOENT;
	}

	mesh_path_fix_nexthop(mpath, sta);
1482

1483 1484 1485 1486 1487 1488 1489
	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
1490 1491 1492 1493
	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);
1494
	else
1495
		eth_zero_addr(next_hop);
1496

1497 1498
	memset(pinfo, 0, sizeof(*pinfo));

1499 1500
	pinfo->generation = mesh_paths_generation;

1501
	pinfo->filled = MPATH_INFO_FRAME_QLEN |
1502
			MPATH_INFO_SN |
1503 1504 1505 1506 1507 1508 1509
			MPATH_INFO_METRIC |
			MPATH_INFO_EXPTIME |
			MPATH_INFO_DISCOVERY_TIMEOUT |
			MPATH_INFO_DISCOVERY_RETRIES |
			MPATH_INFO_FLAGS;

	pinfo->frame_qlen = mpath->frame_queue.qlen;
1510
	pinfo->sn = mpath->sn;
1511 1512 1513 1514 1515 1516 1517 1518 1519 1520
	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;
1521 1522
	if (mpath->flags & MESH_PATH_SN_VALID)
		pinfo->flags |= NL80211_MPATH_FLAG_SN_VALID;
1523 1524
	if (mpath->flags & MESH_PATH_FIXED)
		pinfo->flags |= NL80211_MPATH_FLAG_FIXED;
1525 1526
	if (mpath->flags & MESH_PATH_RESOLVED)
		pinfo->flags |= NL80211_MPATH_FLAG_RESOLVED;
1527 1528 1529 1530 1531 1532
}

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

{
1533
	struct ieee80211_sub_if_data *sdata;
1534 1535
	struct mesh_path *mpath;

1536 1537
	sdata = IEEE80211_DEV_TO_SUB_IF(dev);

1538
	rcu_read_lock();
J
Johannes Berg 已提交
1539
	mpath = mesh_path_lookup(sdata, dst);
1540 1541 1542 1543 1544 1545 1546 1547 1548 1549 1550
	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,
1551 1552
				int idx, u8 *dst, u8 *next_hop,
				struct mpath_info *pinfo)
1553
{
1554
	struct ieee80211_sub_if_data *sdata;
1555 1556
	struct mesh_path *mpath;

1557 1558
	sdata = IEEE80211_DEV_TO_SUB_IF(dev);

1559
	rcu_read_lock();
J
Johannes Berg 已提交
1560
	mpath = mesh_path_lookup_by_idx(sdata, idx);
1561 1562 1563 1564 1565 1566 1567 1568 1569
	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;
}
1570

1571 1572 1573 1574 1575 1576 1577 1578 1579 1580 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
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;
}

1622
static int ieee80211_get_mesh_config(struct wiphy *wiphy,
1623 1624 1625 1626 1627 1628 1629 1630 1631 1632 1633 1634 1635 1636 1637
				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;
}

1638 1639 1640 1641 1642
static int copy_mesh_setup(struct ieee80211_if_mesh *ifmsh,
		const struct mesh_setup *setup)
{
	u8 *new_ie;
	const u8 *old_ie;
1643 1644
	struct ieee80211_sub_if_data *sdata = container_of(ifmsh,
					struct ieee80211_sub_if_data, u.mesh);
1645

1646
	/* allocate information elements */
1647
	new_ie = NULL;
1648
	old_ie = ifmsh->ie;
1649

1650 1651
	if (setup->ie_len) {
		new_ie = kmemdup(setup->ie, setup->ie_len,
1652 1653 1654 1655
				GFP_KERNEL);
		if (!new_ie)
			return -ENOMEM;
	}
1656 1657 1658
	ifmsh->ie_len = setup->ie_len;
	ifmsh->ie = new_ie;
	kfree(old_ie);
1659 1660 1661 1662

	/* 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);
1663
	ifmsh->mesh_sp_id = setup->sync_method;
1664 1665
	ifmsh->mesh_pp_id = setup->path_sel_proto;
	ifmsh->mesh_pm_id = setup->path_metric;
1666
	ifmsh->user_mpm = setup->user_mpm;
1667
	ifmsh->mesh_auth_id = setup->auth_id;
1668 1669 1670 1671 1672
	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;
1673

1674 1675 1676
	/* mcast rate setting in Mesh Node */
	memcpy(sdata->vif.bss_conf.mcast_rate, setup->mcast_rate,
						sizeof(setup->mcast_rate));
1677
	sdata->vif.bss_conf.basic_rates = setup->basic_rates;
1678

1679 1680 1681
	sdata->vif.bss_conf.beacon_int = setup->beacon_interval;
	sdata->vif.bss_conf.dtim_period = setup->dtim_period;

1682 1683 1684
	return 0;
}

1685
static int ieee80211_update_mesh_config(struct wiphy *wiphy,
1686 1687
					struct net_device *dev, u32 mask,
					const struct mesh_config *nconf)
1688 1689 1690
{
	struct mesh_config *conf;
	struct ieee80211_sub_if_data *sdata;
1691 1692
	struct ieee80211_if_mesh *ifmsh;

1693
	sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1694
	ifmsh = &sdata->u.mesh;
1695 1696 1697 1698 1699 1700 1701 1702 1703 1704 1705 1706 1707 1708 1709

	/* 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;
1710
	if (_chg_mesh_attr(NL80211_MESHCONF_ELEMENT_TTL, mask))
1711
		conf->element_ttl = nconf->element_ttl;
1712 1713 1714
	if (_chg_mesh_attr(NL80211_MESHCONF_AUTO_OPEN_PLINKS, mask)) {
		if (ifmsh->user_mpm)
			return -EBUSY;
1715
		conf->auto_open_plinks = nconf->auto_open_plinks;
1716
	}
1717 1718 1719
	if (_chg_mesh_attr(NL80211_MESHCONF_SYNC_OFFSET_MAX_NEIGHBOR, mask))
		conf->dot11MeshNbrOffsetMaxNeighbor =
			nconf->dot11MeshNbrOffsetMaxNeighbor;
1720 1721 1722 1723 1724 1725 1726 1727 1728 1729 1730 1731 1732
	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;
1733 1734 1735
	if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_PERR_MIN_INTERVAL, mask))
		conf->dot11MeshHWMPperrMinInterval =
			nconf->dot11MeshHWMPperrMinInterval;
1736 1737 1738 1739
	if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME,
			   mask))
		conf->dot11MeshHWMPnetDiameterTraversalTime =
			nconf->dot11MeshHWMPnetDiameterTraversalTime;
1740 1741 1742 1743
	if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_ROOTMODE, mask)) {
		conf->dot11MeshHWMPRootMode = nconf->dot11MeshHWMPRootMode;
		ieee80211_mesh_root_setup(ifmsh);
	}
1744
	if (_chg_mesh_attr(NL80211_MESHCONF_GATE_ANNOUNCEMENTS, mask)) {
T
Thomas Pedersen 已提交
1745 1746 1747 1748
		/* our current gate announcement implementation rides on root
		 * announcements, so require this ifmsh to also be a root node
		 * */
		if (nconf->dot11MeshGateAnnouncementProtocol &&
1749 1750
		    !(conf->dot11MeshHWMPRootMode > IEEE80211_ROOTMODE_ROOT)) {
			conf->dot11MeshHWMPRootMode = IEEE80211_PROACTIVE_RANN;
T
Thomas Pedersen 已提交
1751 1752
			ieee80211_mesh_root_setup(ifmsh);
		}
1753 1754 1755
		conf->dot11MeshGateAnnouncementProtocol =
			nconf->dot11MeshGateAnnouncementProtocol;
	}
1756
	if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_RANN_INTERVAL, mask))
1757 1758
		conf->dot11MeshHWMPRannInterval =
			nconf->dot11MeshHWMPRannInterval;
1759 1760
	if (_chg_mesh_attr(NL80211_MESHCONF_FORWARDING, mask))
		conf->dot11MeshForwarding = nconf->dot11MeshForwarding;
1761 1762 1763 1764
	if (_chg_mesh_attr(NL80211_MESHCONF_RSSI_THRESHOLD, mask)) {
		/* our RSSI threshold implementation is supported only for
		 * devices that report signal in dBm.
		 */
1765
		if (!ieee80211_hw_check(&sdata->local->hw, SIGNAL_DBM))
1766 1767 1768
			return -ENOTSUPP;
		conf->rssi_threshold = nconf->rssi_threshold;
	}
1769 1770 1771 1772 1773
	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);
	}
1774 1775 1776 1777 1778 1779
	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;
1780 1781 1782
	if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_CONFIRMATION_INTERVAL, mask))
		conf->dot11MeshHWMPconfirmationInterval =
			nconf->dot11MeshHWMPconfirmationInterval;
M
Marco Porsch 已提交
1783 1784 1785 1786
	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
1787
	if (_chg_mesh_attr(NL80211_MESHCONF_AWAKE_WINDOW, mask))
M
Marco Porsch 已提交
1788 1789
		conf->dot11MeshAwakeWindowDuration =
			nconf->dot11MeshAwakeWindowDuration;
1790 1791
	if (_chg_mesh_attr(NL80211_MESHCONF_PLINK_TIMEOUT, mask))
		conf->plink_timeout = nconf->plink_timeout;
T
Thomas Pedersen 已提交
1792
	ieee80211_mbss_info_change_notify(sdata, BSS_CHANGED_BEACON);
1793 1794 1795
	return 0;
}

1796 1797 1798 1799 1800 1801
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;
1802
	int err;
1803

1804 1805 1806 1807
	memcpy(&ifmsh->mshcfg, conf, sizeof(struct mesh_config));
	err = copy_mesh_setup(ifmsh, setup);
	if (err)
		return err;
1808

1809 1810 1811 1812
	/* can mesh use other SMPS modes? */
	sdata->smps_mode = IEEE80211_SMPS_OFF;
	sdata->needed_rx_chains = sdata->local->rx_chains;

1813
	mutex_lock(&sdata->local->mtx);
1814
	err = ieee80211_vif_use_channel(sdata, &setup->chandef,
J
Johannes Berg 已提交
1815
					IEEE80211_CHANCTX_SHARED);
1816
	mutex_unlock(&sdata->local->mtx);
1817 1818 1819
	if (err)
		return err;

T
Thomas Pedersen 已提交
1820
	return ieee80211_start_mesh(sdata);
1821 1822 1823 1824 1825 1826 1827
}

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);
1828
	mutex_lock(&sdata->local->mtx);
J
Johannes Berg 已提交
1829
	ieee80211_vif_release_channel(sdata);
1830
	mutex_unlock(&sdata->local->mtx);
1831 1832 1833

	return 0;
}
1834 1835
#endif

1836 1837 1838 1839
static int ieee80211_change_bss(struct wiphy *wiphy,
				struct net_device *dev,
				struct bss_parameters *params)
{
J
Johannes Berg 已提交
1840 1841
	struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
	enum ieee80211_band band;
1842 1843
	u32 changed = 0;

1844
	if (!sdata_dereference(sdata->u.ap.beacon, sdata))
J
Johannes Berg 已提交
1845 1846 1847
		return -ENOENT;

	band = ieee80211_get_sdata_band(sdata);
1848 1849

	if (params->use_cts_prot >= 0) {
J
Johannes Berg 已提交
1850
		sdata->vif.bss_conf.use_cts_prot = params->use_cts_prot;
1851 1852 1853
		changed |= BSS_CHANGED_ERP_CTS_PROT;
	}
	if (params->use_short_preamble >= 0) {
J
Johannes Berg 已提交
1854
		sdata->vif.bss_conf.use_short_preamble =
1855 1856 1857
			params->use_short_preamble;
		changed |= BSS_CHANGED_ERP_PREAMBLE;
	}
1858 1859

	if (!sdata->vif.bss_conf.use_short_slot &&
J
Johannes Berg 已提交
1860
	    band == IEEE80211_BAND_5GHZ) {
1861 1862 1863 1864
		sdata->vif.bss_conf.use_short_slot = true;
		changed |= BSS_CHANGED_ERP_SLOT;
	}

1865
	if (params->use_short_slot_time >= 0) {
J
Johannes Berg 已提交
1866
		sdata->vif.bss_conf.use_short_slot =
1867 1868 1869 1870
			params->use_short_slot_time;
		changed |= BSS_CHANGED_ERP_SLOT;
	}

1871
	if (params->basic_rates) {
1872 1873 1874 1875 1876
		ieee80211_parse_bitrates(&sdata->vif.bss_conf.chandef,
					 wiphy->bands[band],
					 params->basic_rates,
					 params->basic_rates_len,
					 &sdata->vif.bss_conf.basic_rates);
1877 1878 1879
		changed |= BSS_CHANGED_BASIC_RATES;
	}

1880 1881 1882 1883 1884 1885 1886
	if (params->ap_isolate >= 0) {
		if (params->ap_isolate)
			sdata->flags |= IEEE80211_SDATA_DONT_BRIDGE_PACKETS;
		else
			sdata->flags &= ~IEEE80211_SDATA_DONT_BRIDGE_PACKETS;
	}

1887 1888 1889 1890 1891 1892
	if (params->ht_opmode >= 0) {
		sdata->vif.bss_conf.ht_operation_mode =
			(u16) params->ht_opmode;
		changed |= BSS_CHANGED_HT;
	}

1893
	if (params->p2p_ctwindow >= 0) {
J
Janusz Dziedzic 已提交
1894 1895 1896 1897
		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;
1898 1899 1900
		changed |= BSS_CHANGED_P2P_PS;
	}

J
Janusz Dziedzic 已提交
1901 1902 1903 1904 1905 1906 1907
	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;
1908 1909 1910
		changed |= BSS_CHANGED_P2P_PS;
	}

1911 1912 1913 1914 1915
	ieee80211_bss_info_change_notify(sdata, changed);

	return 0;
}

1916
static int ieee80211_set_txq_params(struct wiphy *wiphy,
1917
				    struct net_device *dev,
1918 1919 1920
				    struct ieee80211_txq_params *params)
{
	struct ieee80211_local *local = wiphy_priv(wiphy);
1921
	struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1922 1923 1924 1925 1926
	struct ieee80211_tx_queue_params p;

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

1927 1928 1929
	if (local->hw.queues < IEEE80211_NUM_ACS)
		return -EOPNOTSUPP;

1930 1931 1932 1933 1934
	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
1935 1936 1937 1938 1939 1940 1941

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

1942 1943
	sdata->tx_conf[params->ac] = p;
	if (drv_conf_tx(local, sdata, params->ac, &p)) {
J
Joe Perches 已提交
1944
		wiphy_debug(local->hw.wiphy,
1945 1946
			    "failed to set TX queue parameters for AC %d\n",
			    params->ac);
1947 1948 1949
		return -EINVAL;
	}

1950 1951
	ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_QOS);

1952 1953 1954
	return 0;
}

1955
#ifdef CONFIG_PM
J
Johannes Berg 已提交
1956 1957
static int ieee80211_suspend(struct wiphy *wiphy,
			     struct cfg80211_wowlan *wowlan)
1958
{
1959
	return __ieee80211_suspend(wiphy_priv(wiphy), wowlan);
1960 1961 1962 1963 1964 1965 1966 1967 1968 1969 1970
}

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

1971 1972 1973
static int ieee80211_scan(struct wiphy *wiphy,
			  struct cfg80211_scan_request *req)
{
J
Johannes Berg 已提交
1974 1975 1976
	struct ieee80211_sub_if_data *sdata;

	sdata = IEEE80211_WDEV_TO_SUB_IF(req->wdev);
1977

1978 1979 1980 1981 1982
	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:
1983
	case NL80211_IFTYPE_P2P_DEVICE:
1984 1985 1986 1987
		break;
	case NL80211_IFTYPE_P2P_GO:
		if (sdata->local->ops->hw_scan)
			break;
1988 1989 1990 1991 1992
		/*
		 * FIXME: implement NoA while scanning in software,
		 * for now fall through to allow scanning only when
		 * beaconing hasn't been configured yet
		 */
1993
	case NL80211_IFTYPE_AP:
1994 1995 1996 1997 1998 1999 2000 2001 2002 2003
		/*
		 * 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)))
2004 2005 2006 2007 2008
			return -EOPNOTSUPP;
		break;
	default:
		return -EOPNOTSUPP;
	}
2009 2010 2011 2012

	return ieee80211_request_scan(sdata, req);
}

2013 2014 2015 2016 2017 2018 2019 2020 2021 2022 2023 2024 2025 2026
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
2027
ieee80211_sched_scan_stop(struct wiphy *wiphy, struct net_device *dev)
2028 2029 2030 2031 2032 2033
{
	struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);

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

2034
	return ieee80211_request_sched_scan_stop(sdata);
2035 2036
}

2037 2038 2039
static int ieee80211_auth(struct wiphy *wiphy, struct net_device *dev,
			  struct cfg80211_auth_request *req)
{
2040
	return ieee80211_mgd_auth(IEEE80211_DEV_TO_SUB_IF(dev), req);
2041 2042 2043 2044 2045
}

static int ieee80211_assoc(struct wiphy *wiphy, struct net_device *dev,
			   struct cfg80211_assoc_request *req)
{
2046
	return ieee80211_mgd_assoc(IEEE80211_DEV_TO_SUB_IF(dev), req);
2047 2048 2049
}

static int ieee80211_deauth(struct wiphy *wiphy, struct net_device *dev,
2050
			    struct cfg80211_deauth_request *req)
2051
{
2052
	return ieee80211_mgd_deauth(IEEE80211_DEV_TO_SUB_IF(dev), req);
2053 2054 2055
}

static int ieee80211_disassoc(struct wiphy *wiphy, struct net_device *dev,
2056
			      struct cfg80211_disassoc_request *req)
2057
{
2058
	return ieee80211_mgd_disassoc(IEEE80211_DEV_TO_SUB_IF(dev), req);
2059 2060
}

2061 2062 2063
static int ieee80211_join_ibss(struct wiphy *wiphy, struct net_device *dev,
			       struct cfg80211_ibss_params *params)
{
J
Johannes Berg 已提交
2064
	return ieee80211_ibss_join(IEEE80211_DEV_TO_SUB_IF(dev), params);
2065 2066 2067 2068
}

static int ieee80211_leave_ibss(struct wiphy *wiphy, struct net_device *dev)
{
J
Johannes Berg 已提交
2069
	return ieee80211_ibss_leave(IEEE80211_DEV_TO_SUB_IF(dev));
2070 2071
}

2072 2073 2074 2075 2076 2077 2078 2079 2080 2081 2082
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));
}

2083 2084 2085 2086 2087
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);

2088 2089
	memcpy(sdata->vif.bss_conf.mcast_rate, rate,
	       sizeof(int) * IEEE80211_NUM_BANDS);
2090 2091 2092 2093

	return 0;
}

2094 2095 2096
static int ieee80211_set_wiphy_params(struct wiphy *wiphy, u32 changed)
{
	struct ieee80211_local *local = wiphy_priv(wiphy);
2097
	int err;
2098

2099
	if (changed & WIPHY_PARAM_FRAG_THRESHOLD) {
J
Johannes Berg 已提交
2100 2101
		ieee80211_check_fast_xmit_all(local);

2102 2103
		err = drv_set_frag_threshold(local, wiphy->frag_threshold);

J
Johannes Berg 已提交
2104 2105
		if (err) {
			ieee80211_check_fast_xmit_all(local);
2106
			return err;
J
Johannes Berg 已提交
2107
		}
2108 2109
	}

2110 2111 2112 2113 2114 2115 2116
	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);
2117 2118 2119 2120 2121

		if (err)
			return err;
	}

2122
	if (changed & WIPHY_PARAM_RTS_THRESHOLD) {
2123
		err = drv_set_rts_threshold(local, wiphy->rts_threshold);
2124

2125 2126
		if (err)
			return err;
2127 2128
	}

2129 2130 2131
	if (changed & WIPHY_PARAM_RETRY_SHORT) {
		if (wiphy->retry_short > IEEE80211_MAX_TX_RETRY)
			return -EINVAL;
2132
		local->hw.conf.short_frame_max_tx_count = wiphy->retry_short;
2133 2134 2135 2136
	}
	if (changed & WIPHY_PARAM_RETRY_LONG) {
		if (wiphy->retry_long > IEEE80211_MAX_TX_RETRY)
			return -EINVAL;
2137
		local->hw.conf.long_frame_max_tx_count = wiphy->retry_long;
2138
	}
2139 2140 2141 2142 2143 2144 2145
	if (changed &
	    (WIPHY_PARAM_RETRY_SHORT | WIPHY_PARAM_RETRY_LONG))
		ieee80211_hw_config(local, IEEE80211_CONF_CHANGE_RETRY_LIMITS);

	return 0;
}

2146
static int ieee80211_set_tx_power(struct wiphy *wiphy,
2147
				  struct wireless_dev *wdev,
2148
				  enum nl80211_tx_power_setting type, int mbm)
2149 2150
{
	struct ieee80211_local *local = wiphy_priv(wiphy);
2151
	struct ieee80211_sub_if_data *sdata;
2152 2153
	enum nl80211_tx_power_setting txp_type = type;
	bool update_txp_type = false;
2154

2155 2156 2157 2158 2159 2160
	if (wdev) {
		sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);

		switch (type) {
		case NL80211_TX_POWER_AUTOMATIC:
			sdata->user_power_level = IEEE80211_UNSET_POWER_LEVEL;
2161
			txp_type = NL80211_TX_POWER_LIMITED;
2162 2163 2164 2165 2166 2167 2168 2169 2170
			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;
		}

2171 2172 2173 2174 2175 2176
		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);
2177 2178 2179

		return 0;
	}
J
Johannes Berg 已提交
2180

2181
	switch (type) {
2182
	case NL80211_TX_POWER_AUTOMATIC:
2183
		local->user_power_level = IEEE80211_UNSET_POWER_LEVEL;
2184
		txp_type = NL80211_TX_POWER_LIMITED;
2185
		break;
2186 2187 2188 2189 2190
	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);
2191 2192 2193
		break;
	}

2194
	mutex_lock(&local->iflist_mtx);
2195
	list_for_each_entry(sdata, &local->interfaces, list) {
2196
		sdata->user_power_level = local->user_power_level;
2197 2198 2199 2200
		if (txp_type != sdata->vif.bss_conf.txpower_type)
			update_txp_type = true;
		sdata->vif.bss_conf.txpower_type = txp_type;
	}
2201
	list_for_each_entry(sdata, &local->interfaces, list)
2202
		ieee80211_recalc_txpower(sdata, update_txp_type);
2203
	mutex_unlock(&local->iflist_mtx);
2204 2205 2206 2207

	return 0;
}

2208 2209 2210
static int ieee80211_get_tx_power(struct wiphy *wiphy,
				  struct wireless_dev *wdev,
				  int *dbm)
2211 2212
{
	struct ieee80211_local *local = wiphy_priv(wiphy);
2213
	struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
2214

2215 2216 2217
	if (local->ops->get_txpower)
		return drv_get_txpower(local, sdata, dbm);

2218 2219 2220 2221
	if (!local->use_chanctx)
		*dbm = local->hw.conf.power_level;
	else
		*dbm = sdata->vif.bss_conf.txpower;
2222 2223 2224 2225

	return 0;
}

J
Johannes Berg 已提交
2226
static int ieee80211_set_wds_peer(struct wiphy *wiphy, struct net_device *dev,
J
Johannes Berg 已提交
2227
				  const u8 *addr)
J
Johannes Berg 已提交
2228 2229 2230 2231 2232 2233 2234 2235
{
	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
2236 2237 2238 2239 2240 2241 2242
static void ieee80211_rfkill_poll(struct wiphy *wiphy)
{
	struct ieee80211_local *local = wiphy_priv(wiphy);

	drv_rfkill_poll(local);
}

2243
#ifdef CONFIG_NL80211_TESTMODE
2244 2245 2246
static int ieee80211_testmode_cmd(struct wiphy *wiphy,
				  struct wireless_dev *wdev,
				  void *data, int len)
2247 2248
{
	struct ieee80211_local *local = wiphy_priv(wiphy);
2249
	struct ieee80211_vif *vif = NULL;
2250 2251 2252 2253

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

2254 2255 2256 2257 2258 2259 2260 2261 2262
	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);
2263
}
W
Wey-Yi Guy 已提交
2264 2265 2266 2267 2268 2269 2270 2271 2272 2273 2274 2275 2276

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);
}
2277 2278
#endif

2279 2280 2281 2282 2283 2284 2285 2286 2287 2288 2289 2290 2291 2292 2293 2294 2295 2296 2297 2298 2299 2300 2301 2302 2303 2304 2305 2306
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,
2307
	       "SMPS %d requested in AP mode, sending Action frame to %d stations\n",
2308 2309 2310
	       smps_mode, atomic_read(&sdata->u.ap.num_mcast_sta));

	mutex_lock(&sdata->local->sta_mtx);
2311 2312 2313 2314 2315 2316 2317
	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;
2318

2319 2320 2321
		/* This station doesn't support MIMO - skip it */
		if (sta_info_tx_streams(sta) == 1)
			continue;
2322

2323 2324 2325 2326 2327 2328 2329 2330 2331 2332 2333
		/*
		 * 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;
		}
2334

2335 2336 2337 2338 2339 2340
		/*
		 * 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;
2341

2342 2343 2344
		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);
2345 2346 2347 2348 2349 2350 2351 2352 2353 2354 2355
	}
	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)
2356 2357 2358 2359 2360
{
	const u8 *ap;
	enum ieee80211_smps_mode old_req;
	int err;

2361
	lockdep_assert_held(&sdata->wdev.mtx);
2362

2363 2364 2365
	if (WARN_ON_ONCE(sdata->vif.type != NL80211_IFTYPE_STATION))
		return -EINVAL;

2366 2367 2368 2369 2370 2371 2372 2373 2374
	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
2375 2376
	 * association, there's no need to do anything, just store
	 * the new value until we associate.
2377 2378
	 */
	if (!sdata->u.mgd.associated ||
2379
	    sdata->vif.bss_conf.chandef.width == NL80211_CHAN_WIDTH_20_NOHT)
2380 2381
		return 0;

2382
	ap = sdata->u.mgd.associated->bssid;
2383 2384 2385 2386 2387 2388 2389 2390 2391 2392 2393 2394 2395 2396 2397 2398 2399

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

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

	return err;
}

J
Johannes Berg 已提交
2400 2401 2402 2403 2404 2405
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);

2406
	if (sdata->vif.type != NL80211_IFTYPE_STATION)
2407 2408
		return -EOPNOTSUPP;

2409
	if (!ieee80211_hw_check(&local->hw, SUPPORTS_PS))
J
Johannes Berg 已提交
2410 2411 2412
		return -EOPNOTSUPP;

	if (enabled == sdata->u.mgd.powersave &&
2413
	    timeout == local->dynamic_ps_forced_timeout)
J
Johannes Berg 已提交
2414 2415 2416
		return 0;

	sdata->u.mgd.powersave = enabled;
2417
	local->dynamic_ps_forced_timeout = timeout;
J
Johannes Berg 已提交
2418

2419
	/* no change, but if automatic follow powersave */
2420
	sdata_lock(sdata);
2421
	__ieee80211_request_smps_mgd(sdata, sdata->u.mgd.req_smps);
2422
	sdata_unlock(sdata);
2423

2424
	if (ieee80211_hw_check(&local->hw, SUPPORTS_DYNAMIC_PS))
J
Johannes Berg 已提交
2425 2426 2427
		ieee80211_hw_config(local, IEEE80211_CONF_CHANGE_PS);

	ieee80211_recalc_ps(local, -1);
E
Eliad Peller 已提交
2428
	ieee80211_recalc_ps_vif(sdata);
J
Johannes Berg 已提交
2429 2430 2431 2432

	return 0;
}

2433 2434 2435 2436 2437 2438 2439 2440 2441 2442 2443 2444 2445 2446 2447 2448
static int ieee80211_set_cqm_rssi_config(struct wiphy *wiphy,
					 struct net_device *dev,
					 s32 rssi_thold, u32 rssi_hyst)
{
	struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
	struct ieee80211_vif *vif = &sdata->vif;
	struct ieee80211_bss_conf *bss_conf = &vif->bss_conf;

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

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

	/* tell the driver upon association, unless already associated */
2449 2450
	if (sdata->u.mgd.associated &&
	    sdata->vif.driver_flags & IEEE80211_VIF_SUPPORTS_CQM_RSSI)
2451 2452 2453 2454 2455
		ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_CQM);

	return 0;
}

J
Johannes Berg 已提交
2456 2457 2458 2459 2460 2461 2462
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);
2463
	int i, ret;
2464

2465 2466 2467
	if (!ieee80211_sdata_running(sdata))
		return -ENETDOWN;

2468
	if (ieee80211_hw_check(&local->hw, HAS_RATE_CONTROL)) {
2469 2470 2471 2472
		ret = drv_set_bitrate_mask(local, sdata, mask);
		if (ret)
			return ret;
	}
J
Johannes Berg 已提交
2473

2474
	for (i = 0; i < IEEE80211_NUM_BANDS; i++) {
2475 2476 2477
		struct ieee80211_supported_band *sband = wiphy->bands[i];
		int j;

2478
		sdata->rc_rateidx_mask[i] = mask->control[i].legacy;
2479 2480
		memcpy(sdata->rc_rateidx_mcs_mask[i], mask->control[i].ht_mcs,
		       sizeof(mask->control[i].ht_mcs));
2481 2482 2483 2484 2485 2486 2487 2488 2489 2490

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

		for (j = 0; j < IEEE80211_HT_MCS_MASK_LEN; j++)
			if (~sdata->rc_rateidx_mcs_mask[i][j]) {
				sdata->rc_has_mcs_mask[i] = true;
				break;
			}
2491
	}
J
Johannes Berg 已提交
2492

2493
	return 0;
J
Johannes Berg 已提交
2494 2495
}

2496 2497 2498 2499
static bool ieee80211_coalesce_started_roc(struct ieee80211_local *local,
					   struct ieee80211_roc_work *new_roc,
					   struct ieee80211_roc_work *cur_roc)
{
2500 2501 2502 2503
	unsigned long now = jiffies;
	unsigned long remaining = cur_roc->hw_start_time +
				  msecs_to_jiffies(cur_roc->duration) -
				  now;
2504 2505 2506 2507

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

2508 2509
	/* if it doesn't fit entirely, schedule a new one */
	if (new_roc->duration > jiffies_to_msecs(remaining))
2510 2511 2512 2513
		return false;

	ieee80211_handle_roc_started(new_roc);

2514 2515
	/* add to dependents so we send the expired event properly */
	list_add_tail(&new_roc->list, &cur_roc->dependents);
2516 2517 2518
	return true;
}

2519 2520 2521 2522 2523 2524 2525 2526 2527 2528 2529 2530 2531
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;
}

2532 2533 2534 2535
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,
2536 2537
				    struct sk_buff *txskb,
				    enum ieee80211_roc_type type)
2538 2539 2540
{
	struct ieee80211_roc_work *roc, *tmp;
	bool queued = false;
2541 2542 2543 2544
	int ret;

	lockdep_assert_held(&local->mtx);

2545 2546 2547
	if (local->use_chanctx && !local->ops->remain_on_channel)
		return -EOPNOTSUPP;

2548 2549 2550 2551
	roc = kzalloc(sizeof(*roc), GFP_KERNEL);
	if (!roc)
		return -ENOMEM;

2552 2553 2554 2555 2556 2557 2558 2559 2560 2561 2562 2563
	/*
	 * 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;

2564 2565 2566 2567
	roc->chan = channel;
	roc->duration = duration;
	roc->req_duration = duration;
	roc->frame = txskb;
2568
	roc->type = type;
2569 2570 2571 2572
	roc->sdata = sdata;
	INIT_DELAYED_WORK(&roc->work, ieee80211_sw_roc_work);
	INIT_LIST_HEAD(&roc->dependents);

2573 2574 2575 2576 2577
	/*
	 * cookie is either the roc cookie (for normal roc)
	 * or the SKB (for mgmt TX)
	 */
	if (!txskb) {
2578
		roc->cookie = ieee80211_mgmt_tx_cookie(local);
2579 2580
		*cookie = roc->cookie;
	} else {
2581
		roc->mgmt_tx_cookie = *cookie;
2582 2583
	}

2584
	/* if there's one pending or we're scanning, queue this one */
2585
	if (!list_empty(&local->roc_list) ||
2586
	    local->scanning || ieee80211_is_radar_required(local))
2587 2588 2589 2590 2591 2592 2593 2594 2595 2596
		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) */

2597
	ret = drv_remain_on_channel(local, sdata, channel, duration, type);
2598
	if (ret) {
2599 2600
		kfree(roc);
		return ret;
2601 2602
	}

2603 2604 2605 2606 2607
	roc->started = true;
	goto out_queue;

 out_check_combine:
	list_for_each_entry(tmp, &local->roc_list, list) {
2608
		if (tmp->chan != channel || tmp->sdata != sdata)
2609 2610 2611 2612 2613 2614 2615
			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.
2616 2617
		 * If the type of the new ROC has higher priority, modify the
		 * type of the previous one to match that of the new one.
2618 2619 2620 2621
		 */
		if (!tmp->started) {
			list_add_tail(&roc->list, &tmp->dependents);
			tmp->duration = max(tmp->duration, roc->duration);
2622
			tmp->type = max(tmp->type, roc->type);
2623 2624 2625 2626 2627 2628 2629 2630 2631
			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
2632
			 * when the master one begins. If it has begun,
2633 2634 2635
			 * check if it fits entirely within the existing one,
			 * in which case it will just be dependent as well.
			 * Otherwise, schedule it by itself.
2636 2637 2638 2639 2640 2641 2642
			 */
			if (!tmp->hw_begun) {
				list_add_tail(&roc->list, &tmp->dependents);
				queued = true;
				break;
			}

2643
			if (ieee80211_coalesce_started_roc(local, roc, tmp))
2644 2645 2646 2647 2648 2649 2650 2651 2652 2653 2654 2655 2656 2657 2658 2659 2660 2661 2662 2663 2664 2665 2666 2667 2668 2669 2670 2671 2672 2673 2674 2675 2676
				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;
2677 2678
}

2679
static int ieee80211_remain_on_channel(struct wiphy *wiphy,
2680
				       struct wireless_dev *wdev,
2681 2682 2683 2684
				       struct ieee80211_channel *chan,
				       unsigned int duration,
				       u64 *cookie)
{
2685
	struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
2686
	struct ieee80211_local *local = sdata->local;
2687
	int ret;
2688

2689
	mutex_lock(&local->mtx);
2690
	ret = ieee80211_start_roc_work(local, sdata, chan,
2691 2692
				       duration, cookie, NULL,
				       IEEE80211_ROC_TYPE_NORMAL);
2693
	mutex_unlock(&local->mtx);
2694

2695
	return ret;
2696 2697
}

2698 2699
static int ieee80211_cancel_roc(struct ieee80211_local *local,
				u64 cookie, bool mgmt_tx)
2700
{
2701
	struct ieee80211_roc_work *roc, *tmp, *found = NULL;
2702 2703
	int ret;

2704 2705
	mutex_lock(&local->mtx);
	list_for_each_entry_safe(roc, tmp, &local->roc_list, list) {
2706 2707 2708
		struct ieee80211_roc_work *dep, *tmp2;

		list_for_each_entry_safe(dep, tmp2, &roc->dependents, list) {
2709
			if (!mgmt_tx && dep->cookie != cookie)
2710 2711 2712 2713 2714 2715 2716
				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);

2717
			ieee80211_roc_notify_destroy(dep, true);
2718 2719 2720
			return 0;
		}

2721
		if (!mgmt_tx && roc->cookie != cookie)
2722 2723 2724
			continue;
		else if (mgmt_tx && roc->mgmt_tx_cookie != cookie)
			continue;
2725

2726 2727 2728
		found = roc;
		break;
	}
2729

2730 2731 2732 2733
	if (!found) {
		mutex_unlock(&local->mtx);
		return -ENOENT;
	}
2734

2735 2736 2737 2738 2739 2740 2741
	/*
	 * 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.
	 */

2742 2743 2744 2745 2746 2747 2748 2749
	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;
			}
		}
2750

2751
		list_del(&found->list);
2752

2753 2754
		if (found->started)
			ieee80211_start_next_roc(local);
2755
		mutex_unlock(&local->mtx);
2756

2757
		ieee80211_roc_notify_destroy(found, true);
2758 2759 2760 2761
	} else {
		/* work may be pending so use it all the time */
		found->abort = true;
		ieee80211_queue_delayed_work(&local->hw, &found->work, 0);
2762 2763 2764

		mutex_unlock(&local->mtx);

2765 2766
		/* work will clean up etc */
		flush_delayed_work(&found->work);
2767 2768
		WARN_ON(!found->to_be_freed);
		kfree(found);
2769
	}
2770

2771
	return 0;
2772 2773
}

2774
static int ieee80211_cancel_remain_on_channel(struct wiphy *wiphy,
2775
					      struct wireless_dev *wdev,
2776
					      u64 cookie)
2777
{
2778
	struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
2779
	struct ieee80211_local *local = sdata->local;
2780

2781
	return ieee80211_cancel_roc(local, cookie, false);
2782 2783
}

2784 2785
static int ieee80211_start_radar_detection(struct wiphy *wiphy,
					   struct net_device *dev,
2786 2787
					   struct cfg80211_chan_def *chandef,
					   u32 cac_time_ms)
2788 2789 2790 2791 2792
{
	struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
	struct ieee80211_local *local = sdata->local;
	int err;

2793 2794 2795 2796 2797
	mutex_lock(&local->mtx);
	if (!list_empty(&local->roc_list) || local->scanning) {
		err = -EBUSY;
		goto out_unlock;
	}
2798 2799 2800 2801 2802 2803 2804 2805

	/* 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)
2806
		goto out_unlock;
2807 2808

	ieee80211_queue_delayed_work(&sdata->local->hw,
2809 2810
				     &sdata->dfs_cac_timer_work,
				     msecs_to_jiffies(cac_time_ms));
2811

2812 2813 2814
 out_unlock:
	mutex_unlock(&local->mtx);
	return err;
2815 2816
}

2817 2818 2819 2820 2821 2822 2823 2824 2825 2826 2827 2828 2829 2830 2831 2832 2833 2834 2835 2836 2837 2838 2839 2840 2841 2842 2843 2844 2845 2846 2847 2848 2849 2850 2851 2852 2853 2854 2855 2856 2857 2858 2859 2860 2861 2862 2863 2864 2865 2866 2867 2868 2869 2870 2871 2872
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;
}

2873
void ieee80211_csa_finish(struct ieee80211_vif *vif)
2874
{
2875
	struct ieee80211_sub_if_data *sdata = vif_to_sdata(vif);
2876

2877 2878 2879 2880
	ieee80211_queue_work(&sdata->local->hw,
			     &sdata->csa_finalize_work);
}
EXPORT_SYMBOL(ieee80211_csa_finish);
2881

2882 2883
static int ieee80211_set_after_csa_beacon(struct ieee80211_sub_if_data *sdata,
					  u32 *changed)
2884
{
2885
	int err;
2886

2887 2888
	switch (sdata->vif.type) {
	case NL80211_IFTYPE_AP:
2889 2890
		err = ieee80211_assign_beacon(sdata, sdata->u.ap.next_beacon,
					      NULL);
2891 2892 2893
		kfree(sdata->u.ap.next_beacon);
		sdata->u.ap.next_beacon = NULL;

2894
		if (err < 0)
2895 2896
			return err;
		*changed |= err;
2897 2898
		break;
	case NL80211_IFTYPE_ADHOC:
2899 2900
		err = ieee80211_ibss_finish_csa(sdata);
		if (err < 0)
2901 2902
			return err;
		*changed |= err;
2903
		break;
2904 2905 2906 2907
#ifdef CONFIG_MAC80211_MESH
	case NL80211_IFTYPE_MESH_POINT:
		err = ieee80211_mesh_finish_csa(sdata);
		if (err < 0)
2908 2909
			return err;
		*changed |= err;
2910 2911
		break;
#endif
2912 2913
	default:
		WARN_ON(1);
2914 2915 2916 2917 2918 2919
		return -EINVAL;
	}

	return 0;
}

2920
static int __ieee80211_csa_finalize(struct ieee80211_sub_if_data *sdata)
2921 2922 2923 2924 2925 2926 2927
{
	struct ieee80211_local *local = sdata->local;
	u32 changed = 0;
	int err;

	sdata_assert_lock(sdata);
	lockdep_assert_held(&local->mtx);
2928
	lockdep_assert_held(&local->chanctx_mtx);
2929

2930 2931 2932 2933 2934 2935
	/*
	 * 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
	 */
2936

2937 2938 2939 2940 2941 2942 2943 2944 2945
	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;

2946
		return ieee80211_vif_use_reserved_context(sdata);
2947
	}
2948

2949 2950 2951 2952
	if (!cfg80211_chandef_identical(&sdata->vif.bss_conf.chandef,
					&sdata->csa_chandef))
		return -EINVAL;

2953 2954 2955 2956
	sdata->vif.csa_active = false;

	err = ieee80211_set_after_csa_beacon(sdata, &changed);
	if (err)
2957
		return err;
2958

2959
	ieee80211_bss_info_change_notify(sdata, changed);
2960

2961 2962 2963 2964 2965
	if (sdata->csa_block_tx) {
		ieee80211_wake_vif_queues(local, sdata,
					  IEEE80211_QUEUE_STOP_REASON_CSA);
		sdata->csa_block_tx = false;
	}
2966

2967 2968 2969 2970 2971 2972
	err = drv_post_channel_switch(sdata);
	if (err)
		return err;

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

2973 2974 2975 2976 2977 2978 2979 2980 2981 2982
	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);
	}
2983 2984 2985 2986 2987 2988 2989
}

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);
2990
	struct ieee80211_local *local = sdata->local;
2991 2992

	sdata_lock(sdata);
2993
	mutex_lock(&local->mtx);
2994
	mutex_lock(&local->chanctx_mtx);
2995

2996 2997 2998 2999 3000 3001 3002 3003
	/* 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);
3004 3005

unlock:
3006
	mutex_unlock(&local->chanctx_mtx);
3007
	mutex_unlock(&local->mtx);
3008
	sdata_unlock(sdata);
3009 3010
}

3011 3012 3013
static int ieee80211_set_csa_beacon(struct ieee80211_sub_if_data *sdata,
				    struct cfg80211_csa_settings *params,
				    u32 *changed)
3014
{
3015
	struct ieee80211_csa_settings csa = {};
3016
	int err;
3017 3018 3019

	switch (sdata->vif.type) {
	case NL80211_IFTYPE_AP:
3020 3021 3022 3023 3024
		sdata->u.ap.next_beacon =
			cfg80211_beacon_dup(&params->beacon_after);
		if (!sdata->u.ap.next_beacon)
			return -ENOMEM;

3025 3026 3027 3028 3029 3030 3031 3032 3033 3034 3035 3036 3037 3038 3039 3040 3041 3042 3043
		/*
		 * 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;

3044 3045 3046 3047 3048
		if ((params->n_counter_offsets_beacon >
		     IEEE80211_MAX_CSA_COUNTERS_NUM) ||
		    (params->n_counter_offsets_presp >
		     IEEE80211_MAX_CSA_COUNTERS_NUM))
			return -EINVAL;
3049

3050 3051 3052 3053 3054
		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;
3055

3056
		err = ieee80211_assign_beacon(sdata, &params->beacon_csa, &csa);
3057 3058 3059 3060
		if (err < 0) {
			kfree(sdata->u.ap.next_beacon);
			return err;
		}
3061
		*changed |= err;
3062

3063 3064 3065 3066 3067 3068 3069 3070 3071 3072 3073 3074 3075 3076 3077 3078 3079 3080 3081 3082 3083 3084 3085 3086 3087 3088 3089
		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;

3090 3091 3092 3093 3094
		/* see comments in the NL80211_IFTYPE_AP block */
		if (params->count > 1) {
			err = ieee80211_ibss_csa_beacon(sdata, params);
			if (err < 0)
				return err;
3095
			*changed |= err;
3096 3097 3098 3099
		}

		ieee80211_send_action_csa(sdata, params);

3100
		break;
3101
#ifdef CONFIG_MAC80211_MESH
3102 3103
	case NL80211_IFTYPE_MESH_POINT: {
		struct ieee80211_if_mesh *ifmsh = &sdata->u.mesh;
3104 3105 3106 3107 3108 3109 3110 3111 3112

		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;

3113
		if (ifmsh->csa_role == IEEE80211_MESH_CSA_ROLE_NONE) {
3114
			ifmsh->csa_role = IEEE80211_MESH_CSA_ROLE_INIT;
3115 3116 3117 3118 3119
			if (!ifmsh->pre_value)
				ifmsh->pre_value = 1;
			else
				ifmsh->pre_value++;
		}
3120

3121 3122 3123 3124 3125 3126 3127
		/* 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;
			}
3128
			*changed |= err;
3129
		}
3130 3131 3132 3133

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

3134
		break;
3135
		}
3136
#endif
3137 3138 3139 3140
	default:
		return -EOPNOTSUPP;
	}

3141 3142 3143
	return 0;
}

3144 3145 3146
static int
__ieee80211_channel_switch(struct wiphy *wiphy, struct net_device *dev,
			   struct cfg80211_csa_settings *params)
3147 3148 3149
{
	struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
	struct ieee80211_local *local = sdata->local;
3150
	struct ieee80211_channel_switch ch_switch;
3151
	struct ieee80211_chanctx_conf *conf;
3152
	struct ieee80211_chanctx *chanctx;
3153 3154
	u32 changed = 0;
	int err;
3155 3156

	sdata_assert_lock(sdata);
3157
	lockdep_assert_held(&local->mtx);
3158 3159 3160 3161 3162 3163 3164 3165 3166 3167 3168

	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;

3169 3170 3171 3172
	/* don't allow another channel switch if one is already active. */
	if (sdata->vif.csa_active)
		return -EBUSY;

3173 3174 3175 3176
	mutex_lock(&local->chanctx_mtx);
	conf = rcu_dereference_protected(sdata->vif.chanctx_conf,
					 lockdep_is_held(&local->chanctx_mtx));
	if (!conf) {
3177 3178
		err = -EBUSY;
		goto out;
3179 3180
	}

3181
	chanctx = container_of(conf, struct ieee80211_chanctx, conf);
3182 3183 3184
	if (!chanctx) {
		err = -EBUSY;
		goto out;
3185 3186
	}

3187 3188 3189 3190 3191 3192
	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;

3193 3194 3195 3196
	err = drv_pre_channel_switch(sdata, &ch_switch);
	if (err)
		goto out;

3197 3198 3199 3200 3201
	err = ieee80211_vif_reserve_chanctx(sdata, &params->chandef,
					    chanctx->mode,
					    params->radar_required);
	if (err)
		goto out;
3202

3203 3204 3205 3206 3207 3208
	/* 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;
	}
3209 3210

	err = ieee80211_set_csa_beacon(sdata, params, &changed);
3211 3212 3213 3214
	if (err) {
		ieee80211_vif_unreserve_chanctx(sdata);
		goto out;
	}
3215

3216
	sdata->csa_chandef = params->chandef;
3217
	sdata->csa_block_tx = params->block_tx;
3218 3219
	sdata->vif.csa_active = true;

3220
	if (sdata->csa_block_tx)
3221 3222
		ieee80211_stop_vif_queues(local, sdata,
					  IEEE80211_QUEUE_STOP_REASON_CSA);
3223

3224 3225 3226
	cfg80211_ch_switch_started_notify(sdata->dev, &sdata->csa_chandef,
					  params->count);

3227 3228 3229 3230 3231 3232 3233
	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);
	}
3234

3235 3236 3237
out:
	mutex_unlock(&local->chanctx_mtx);
	return err;
3238 3239
}

3240 3241 3242 3243 3244 3245 3246 3247 3248 3249 3250 3251 3252 3253
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;
}

3254 3255 3256 3257 3258 3259 3260 3261 3262 3263 3264 3265 3266 3267 3268 3269 3270 3271 3272 3273 3274 3275 3276 3277 3278 3279 3280 3281 3282 3283
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;
}

3284
static int ieee80211_mgmt_tx(struct wiphy *wiphy, struct wireless_dev *wdev,
3285 3286
			     struct cfg80211_mgmt_tx_params *params,
			     u64 *cookie)
3287
{
3288
	struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
3289
	struct ieee80211_local *local = sdata->local;
3290
	struct sk_buff *skb, *ack_skb;
3291
	struct sta_info *sta;
3292
	const struct ieee80211_mgmt *mgmt = (void *)params->buf;
3293
	bool need_offchan = false;
3294
	u32 flags;
3295
	int ret;
3296
	u8 *data;
3297

3298
	if (params->dont_wait_for_ack)
3299 3300 3301 3302 3303
		flags = IEEE80211_TX_CTL_NO_ACK;
	else
		flags = IEEE80211_TX_INTFL_NL80211_FRAME_TX |
			IEEE80211_TX_CTL_REQ_TX_STATUS;

3304
	if (params->no_cck)
3305 3306
		flags |= IEEE80211_TX_CTL_NO_CCK_RATE;

3307 3308
	switch (sdata->vif.type) {
	case NL80211_IFTYPE_ADHOC:
3309 3310 3311 3312 3313 3314 3315 3316 3317 3318
		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
3319 3320 3321
	case NL80211_IFTYPE_AP:
	case NL80211_IFTYPE_AP_VLAN:
	case NL80211_IFTYPE_P2P_GO:
3322 3323 3324 3325
		if (sdata->vif.type != NL80211_IFTYPE_ADHOC &&
		    !ieee80211_vif_is_mesh(&sdata->vif) &&
		    !rcu_access_pointer(sdata->bss->beacon))
			need_offchan = true;
3326
		if (!ieee80211_is_action(mgmt->frame_control) ||
3327
		    mgmt->u.action.category == WLAN_CATEGORY_PUBLIC ||
3328 3329
		    mgmt->u.action.category == WLAN_CATEGORY_SELF_PROTECTED ||
		    mgmt->u.action.category == WLAN_CATEGORY_SPECTRUM_MGMT)
3330 3331 3332 3333 3334 3335 3336 3337
			break;
		rcu_read_lock();
		sta = sta_info_get(sdata, mgmt->da);
		rcu_read_unlock();
		if (!sta)
			return -ENOLINK;
		break;
	case NL80211_IFTYPE_STATION:
3338
	case NL80211_IFTYPE_P2P_CLIENT:
3339 3340 3341 3342 3343 3344
		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)))
3345
			need_offchan = true;
3346
		sdata_unlock(sdata);
3347
		break;
3348 3349 3350
	case NL80211_IFTYPE_P2P_DEVICE:
		need_offchan = true;
		break;
3351 3352 3353 3354
	default:
		return -EOPNOTSUPP;
	}

3355 3356 3357
	/* configurations requiring offchan cannot work if no channel has been
	 * specified
	 */
3358
	if (need_offchan && !params->chan)
3359 3360
		return -EINVAL;

3361 3362 3363 3364
	mutex_lock(&local->mtx);

	/* Check if the operating channel is the requested channel */
	if (!need_offchan) {
J
Johannes Berg 已提交
3365 3366 3367 3368 3369
		struct ieee80211_chanctx_conf *chanctx_conf;

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

3370
		if (chanctx_conf) {
3371 3372 3373 3374
			need_offchan = params->chan &&
				       (params->chan !=
					chanctx_conf->def.chan);
		} else if (!params->chan) {
3375 3376 3377 3378
			ret = -EINVAL;
			rcu_read_unlock();
			goto out_unlock;
		} else {
3379
			need_offchan = true;
3380
		}
J
Johannes Berg 已提交
3381
		rcu_read_unlock();
3382 3383
	}

3384
	if (need_offchan && !params->offchan) {
3385 3386 3387 3388
		ret = -EBUSY;
		goto out_unlock;
	}

3389
	skb = dev_alloc_skb(local->hw.extra_tx_headroom + params->len);
3390 3391 3392 3393
	if (!skb) {
		ret = -ENOMEM;
		goto out_unlock;
	}
3394 3395
	skb_reserve(skb, local->hw.extra_tx_headroom);

3396 3397 3398 3399 3400 3401
	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 ||
3402
	     sdata->vif.type == NL80211_IFTYPE_MESH_POINT ||
3403 3404 3405
	     sdata->vif.type == NL80211_IFTYPE_ADHOC) &&
	    params->n_csa_offsets) {
		int i;
3406
		struct beacon_data *beacon = NULL;
3407

3408 3409 3410 3411 3412 3413 3414 3415 3416 3417 3418 3419 3420 3421 3422
		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();
3423
	}
3424 3425 3426 3427 3428

	IEEE80211_SKB_CB(skb)->flags = flags;

	skb->dev = sdata->dev;

3429
	if (!params->dont_wait_for_ack) {
3430
		/* make a copy to preserve the frame contents
3431 3432
		 * in case of encryption.
		 */
3433 3434 3435 3436
		ack_skb = ieee80211_make_ack_skb(local, skb, cookie,
						 GFP_KERNEL);
		if (IS_ERR(ack_skb)) {
			ret = PTR_ERR(ack_skb);
3437 3438 3439 3440 3441 3442 3443 3444
			kfree_skb(skb);
			goto out_unlock;
		}
	} else {
		/* for cookie below */
		ack_skb = skb;
	}

3445
	if (!need_offchan) {
3446
		ieee80211_tx_skb(sdata, skb);
3447 3448
		ret = 0;
		goto out_unlock;
3449 3450
	}

3451 3452
	IEEE80211_SKB_CB(skb)->flags |= IEEE80211_TX_CTL_TX_OFFCHAN |
					IEEE80211_TX_INTFL_OFFCHAN_TX_OK;
3453
	if (ieee80211_hw_check(&local->hw, QUEUE_CONTROL))
3454 3455
		IEEE80211_SKB_CB(skb)->hw_queue =
			local->hw.offchannel_tx_hw_queue;
3456

3457
	/* This will handle all kinds of coalescing and immediate TX */
3458 3459
	ret = ieee80211_start_roc_work(local, sdata, params->chan,
				       params->wait, cookie, skb,
3460
				       IEEE80211_ROC_TYPE_MGMT_TX);
3461 3462 3463 3464 3465
	if (ret)
		kfree_skb(skb);
 out_unlock:
	mutex_unlock(&local->mtx);
	return ret;
3466 3467
}

3468
static int ieee80211_mgmt_tx_cancel_wait(struct wiphy *wiphy,
3469
					 struct wireless_dev *wdev,
3470 3471
					 u64 cookie)
{
3472
	struct ieee80211_local *local = wiphy_priv(wiphy);
3473

3474
	return ieee80211_cancel_roc(local, cookie, true);
3475 3476
}

3477
static void ieee80211_mgmt_frame_register(struct wiphy *wiphy,
3478
					  struct wireless_dev *wdev,
3479 3480 3481 3482
					  u16 frame_type, bool reg)
{
	struct ieee80211_local *local = wiphy_priv(wiphy);

3483 3484 3485 3486 3487 3488
	switch (frame_type) {
	case IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_PROBE_REQ:
		if (reg)
			local->probe_req_reg++;
		else
			local->probe_req_reg--;
3489

3490 3491 3492
		if (!local->open_count)
			break;

3493 3494 3495 3496 3497
		ieee80211_queue_work(&local->hw, &local->reconfig_filter);
		break;
	default:
		break;
	}
3498 3499
}

3500 3501 3502 3503 3504 3505 3506 3507 3508 3509 3510 3511 3512 3513 3514 3515 3516
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);
}

3517 3518 3519 3520 3521 3522 3523 3524 3525 3526 3527 3528 3529 3530 3531
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
3532 3533 3534 3535 3536 3537
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;
3538
	struct sk_buff *skb, *ack_skb;
J
Johannes Berg 已提交
3539 3540 3541 3542 3543
	int size = sizeof(*nullfunc);
	__le16 fc;
	bool qos;
	struct ieee80211_tx_info *info;
	struct sta_info *sta;
J
Johannes Berg 已提交
3544 3545
	struct ieee80211_chanctx_conf *chanctx_conf;
	enum ieee80211_band band;
3546 3547 3548 3549
	int ret;

	/* the lock is needed to assign the cookie later */
	mutex_lock(&local->mtx);
J
Johannes Berg 已提交
3550 3551

	rcu_read_lock();
J
Johannes Berg 已提交
3552 3553
	chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf);
	if (WARN_ON(!chanctx_conf)) {
3554 3555
		ret = -EINVAL;
		goto unlock;
J
Johannes Berg 已提交
3556
	}
3557
	band = chanctx_conf->def.chan->band;
3558
	sta = sta_info_get_bss(sdata, peer);
3559
	if (sta) {
3560
		qos = sta->sta.wme;
3561
	} else {
3562 3563
		ret = -ENOLINK;
		goto unlock;
3564
	}
J
Johannes Berg 已提交
3565 3566 3567 3568 3569 3570 3571 3572 3573 3574 3575 3576 3577

	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
3578
	if (!skb) {
3579 3580
		ret = -ENOMEM;
		goto unlock;
J
Johannes Berg 已提交
3581
	}
J
Johannes Berg 已提交
3582 3583 3584 3585 3586 3587 3588 3589 3590 3591 3592 3593 3594 3595 3596 3597 3598

	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;
3599
	info->band = band;
J
Johannes Berg 已提交
3600 3601 3602 3603 3604 3605

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

3606 3607 3608 3609 3610 3611 3612
	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
3613
	local_bh_disable();
3614
	ieee80211_xmit(sdata, sta, skb);
J
Johannes Berg 已提交
3615
	local_bh_enable();
3616 3617 3618

	ret = 0;
unlock:
J
Johannes Berg 已提交
3619
	rcu_read_unlock();
3620
	mutex_unlock(&local->mtx);
J
Johannes Berg 已提交
3621

3622
	return ret;
J
Johannes Berg 已提交
3623 3624
}

3625 3626 3627
static int ieee80211_cfg_get_channel(struct wiphy *wiphy,
				     struct wireless_dev *wdev,
				     struct cfg80211_chan_def *chandef)
3628
{
J
Johannes Berg 已提交
3629
	struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
3630
	struct ieee80211_local *local = wiphy_priv(wiphy);
J
Johannes Berg 已提交
3631
	struct ieee80211_chanctx_conf *chanctx_conf;
3632
	int ret = -ENODATA;
J
Johannes Berg 已提交
3633 3634

	rcu_read_lock();
3635 3636
	chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf);
	if (chanctx_conf) {
3637
		*chandef = sdata->vif.bss_conf.chandef;
3638 3639 3640 3641 3642 3643 3644
		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
3645
			*chandef = local->_oper_chandef;
3646
		ret = 0;
J
Johannes Berg 已提交
3647 3648
	}
	rcu_read_unlock();
3649

3650
	return ret;
3651 3652
}

3653 3654 3655 3656 3657 3658 3659
#ifdef CONFIG_PM
static void ieee80211_set_wakeup(struct wiphy *wiphy, bool enabled)
{
	drv_set_wakeup(wiphy_priv(wiphy), enabled);
}
#endif

3660 3661 3662 3663 3664 3665 3666 3667 3668 3669 3670 3671 3672 3673 3674 3675 3676
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;
	}

3677
	old_qos_map = sdata_dereference(sdata->qos_map, sdata);
3678 3679 3680 3681 3682 3683 3684
	rcu_assign_pointer(sdata->qos_map, new_qos_map);
	if (old_qos_map)
		kfree_rcu(old_qos_map, rcu_head);

	return 0;
}

3685 3686 3687 3688 3689 3690 3691 3692 3693 3694 3695 3696 3697 3698 3699
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;
}

3700 3701 3702 3703 3704 3705 3706 3707 3708 3709 3710 3711 3712 3713 3714 3715 3716 3717 3718 3719 3720 3721 3722 3723 3724 3725 3726 3727 3728 3729 3730 3731 3732 3733 3734 3735 3736 3737 3738 3739 3740 3741 3742 3743 3744 3745 3746 3747 3748 3749 3750 3751
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();
3752
		ieee80211_flush_queues(local, sdata, false);
3753 3754 3755 3756 3757 3758 3759 3760 3761 3762 3763 3764 3765 3766 3767 3768 3769

		/* 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;
}

3770
const struct cfg80211_ops mac80211_config_ops = {
3771 3772
	.add_virtual_intf = ieee80211_add_iface,
	.del_virtual_intf = ieee80211_del_iface,
3773
	.change_virtual_intf = ieee80211_change_iface,
3774 3775
	.start_p2p_device = ieee80211_start_p2p_device,
	.stop_p2p_device = ieee80211_stop_p2p_device,
3776 3777
	.add_key = ieee80211_add_key,
	.del_key = ieee80211_del_key,
3778
	.get_key = ieee80211_get_key,
3779
	.set_default_key = ieee80211_config_default_key,
3780
	.set_default_mgmt_key = ieee80211_config_default_mgmt_key,
3781 3782 3783
	.start_ap = ieee80211_start_ap,
	.change_beacon = ieee80211_change_beacon,
	.stop_ap = ieee80211_stop_ap,
3784 3785 3786
	.add_station = ieee80211_add_station,
	.del_station = ieee80211_del_station,
	.change_station = ieee80211_change_station,
3787
	.get_station = ieee80211_get_station,
3788
	.dump_station = ieee80211_dump_station,
3789
	.dump_survey = ieee80211_dump_survey,
3790 3791 3792 3793 3794 3795
#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,
3796 3797
	.get_mpp = ieee80211_get_mpp,
	.dump_mpp = ieee80211_dump_mpp,
3798 3799
	.update_mesh_config = ieee80211_update_mesh_config,
	.get_mesh_config = ieee80211_get_mesh_config,
3800 3801
	.join_mesh = ieee80211_join_mesh,
	.leave_mesh = ieee80211_leave_mesh,
3802
#endif
3803 3804
	.join_ocb = ieee80211_join_ocb,
	.leave_ocb = ieee80211_leave_ocb,
3805
	.change_bss = ieee80211_change_bss,
3806
	.set_txq_params = ieee80211_set_txq_params,
3807
	.set_monitor_channel = ieee80211_set_monitor_channel,
3808 3809
	.suspend = ieee80211_suspend,
	.resume = ieee80211_resume,
3810
	.scan = ieee80211_scan,
3811 3812
	.sched_scan_start = ieee80211_sched_scan_start,
	.sched_scan_stop = ieee80211_sched_scan_stop,
3813 3814 3815 3816
	.auth = ieee80211_auth,
	.assoc = ieee80211_assoc,
	.deauth = ieee80211_deauth,
	.disassoc = ieee80211_disassoc,
3817 3818
	.join_ibss = ieee80211_join_ibss,
	.leave_ibss = ieee80211_leave_ibss,
3819
	.set_mcast_rate = ieee80211_set_mcast_rate,
3820
	.set_wiphy_params = ieee80211_set_wiphy_params,
3821 3822
	.set_tx_power = ieee80211_set_tx_power,
	.get_tx_power = ieee80211_get_tx_power,
J
Johannes Berg 已提交
3823
	.set_wds_peer = ieee80211_set_wds_peer,
J
Johannes Berg 已提交
3824
	.rfkill_poll = ieee80211_rfkill_poll,
3825
	CFG80211_TESTMODE_CMD(ieee80211_testmode_cmd)
W
Wey-Yi Guy 已提交
3826
	CFG80211_TESTMODE_DUMP(ieee80211_testmode_dump)
J
Johannes Berg 已提交
3827
	.set_power_mgmt = ieee80211_set_power_mgmt,
J
Johannes Berg 已提交
3828
	.set_bitrate_mask = ieee80211_set_bitrate_mask,
3829 3830
	.remain_on_channel = ieee80211_remain_on_channel,
	.cancel_remain_on_channel = ieee80211_cancel_remain_on_channel,
3831
	.mgmt_tx = ieee80211_mgmt_tx,
3832
	.mgmt_tx_cancel_wait = ieee80211_mgmt_tx_cancel_wait,
3833
	.set_cqm_rssi_config = ieee80211_set_cqm_rssi_config,
3834
	.mgmt_frame_register = ieee80211_mgmt_frame_register,
3835 3836
	.set_antenna = ieee80211_set_antenna,
	.get_antenna = ieee80211_get_antenna,
3837
	.set_rekey_data = ieee80211_set_rekey_data,
3838 3839
	.tdls_oper = ieee80211_tdls_oper,
	.tdls_mgmt = ieee80211_tdls_mgmt,
3840 3841
	.tdls_channel_switch = ieee80211_tdls_channel_switch,
	.tdls_cancel_channel_switch = ieee80211_tdls_cancel_channel_switch,
J
Johannes Berg 已提交
3842
	.probe_client = ieee80211_probe_client,
3843
	.set_noack_map = ieee80211_set_noack_map,
3844 3845 3846
#ifdef CONFIG_PM
	.set_wakeup = ieee80211_set_wakeup,
#endif
3847
	.get_channel = ieee80211_cfg_get_channel,
3848
	.start_radar_detection = ieee80211_start_radar_detection,
3849
	.channel_switch = ieee80211_channel_switch,
3850
	.set_qos_map = ieee80211_set_qos_map,
3851
	.set_ap_chanwidth = ieee80211_set_ap_chanwidth,
3852 3853
	.add_tx_ts = ieee80211_add_tx_ts,
	.del_tx_ts = ieee80211_del_tx_ts,
3854
};