cfg.c 102.2 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

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

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	if (type == NL80211_IFTYPE_AP_VLAN &&
	    params && params->use_4addr == 0)
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		RCU_INIT_POINTER(sdata->u.vlan.sta, NULL);
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	else if (type == NL80211_IFTYPE_STATION &&
		 params && params->use_4addr >= 0)
		sdata->u.mgd.use_4addr = params->use_4addr;

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	if (sdata->vif.type == NL80211_IFTYPE_MONITOR && flags) {
		struct ieee80211_local *local = sdata->local;

		if (ieee80211_sdata_running(sdata)) {
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			u32 mask = MONITOR_FLAG_COOK_FRAMES |
				   MONITOR_FLAG_ACTIVE;

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

			ieee80211_adjust_monitor_flags(sdata, -1);
			sdata->u.mntr_flags = *flags;
			ieee80211_adjust_monitor_flags(sdata, 1);

			ieee80211_configure_filter(local);
		} else {
			/*
			 * Because the interface is down, ieee80211_do_stop
			 * and ieee80211_do_open take care of "everything"
			 * mentioned in the comment above.
			 */
			sdata->u.mntr_flags = *flags;
		}
	}
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	return 0;
}

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static int ieee80211_start_p2p_device(struct wiphy *wiphy,
				      struct wireless_dev *wdev)
{
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	struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
	int ret;

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

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	return ieee80211_do_open(wdev, true);
}

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

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

	sdata->noack_map = noack_map;
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	ieee80211_check_fast_xmit_iface(sdata);

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	return 0;
}

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static int ieee80211_add_key(struct wiphy *wiphy, struct net_device *dev,
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			     u8 key_idx, bool pairwise, const u8 *mac_addr,
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			     struct key_params *params)
{
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	struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
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	struct ieee80211_local *local = sdata->local;
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	struct sta_info *sta = NULL;
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	const struct ieee80211_cipher_scheme *cs = NULL;
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	struct ieee80211_key *key;
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	int err;
156

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

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	/* reject WEP and TKIP keys if WEP failed to initialize */
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	switch (params->cipher) {
	case WLAN_CIPHER_SUITE_WEP40:
	case WLAN_CIPHER_SUITE_TKIP:
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	case WLAN_CIPHER_SUITE_WEP104:
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		if (IS_ERR(local->wep_tx_tfm))
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			return -EINVAL;
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		break;
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	case WLAN_CIPHER_SUITE_CCMP:
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	case WLAN_CIPHER_SUITE_CCMP_256:
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	case WLAN_CIPHER_SUITE_AES_CMAC:
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	case WLAN_CIPHER_SUITE_BIP_CMAC_256:
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	case WLAN_CIPHER_SUITE_BIP_GMAC_128:
	case WLAN_CIPHER_SUITE_BIP_GMAC_256:
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	case WLAN_CIPHER_SUITE_GCMP:
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	case WLAN_CIPHER_SUITE_GCMP_256:
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		break;
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	default:
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		cs = ieee80211_cs_get(local, params->cipher, sdata->vif.type);
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		break;
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	}

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	key = ieee80211_key_alloc(params->cipher, key_idx, params->key_len,
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				  params->key, params->seq_len, params->seq,
				  cs);
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	if (IS_ERR(key))
		return PTR_ERR(key);
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	if (pairwise)
		key->conf.flags |= IEEE80211_KEY_FLAG_PAIRWISE;

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	mutex_lock(&local->sta_mtx);
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	if (mac_addr) {
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		if (ieee80211_vif_is_mesh(&sdata->vif))
			sta = sta_info_get(sdata, mac_addr);
		else
			sta = sta_info_get_bss(sdata, mac_addr);
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		/*
		 * The ASSOC test makes sure the driver is ready to
		 * receive the key. When wpa_supplicant has roamed
		 * using FT, it attempts to set the key before
		 * association has completed, this rejects that attempt
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		 * so it will set the key again after association.
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		 *
		 * TODO: accept the key if we have a station entry and
		 *       add it to the device after the station.
		 */
		if (!sta || !test_sta_flag(sta, WLAN_STA_ASSOC)) {
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			ieee80211_key_free_unused(key);
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			err = -ENOENT;
			goto out_unlock;
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		}
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	}

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	switch (sdata->vif.type) {
	case NL80211_IFTYPE_STATION:
		if (sdata->u.mgd.mfp != IEEE80211_MFP_DISABLED)
			key->conf.flags |= IEEE80211_KEY_FLAG_RX_MGMT;
		break;
	case NL80211_IFTYPE_AP:
	case NL80211_IFTYPE_AP_VLAN:
		/* Keys without a station are used for TX only */
		if (key->sta && test_sta_flag(key->sta, WLAN_STA_MFP))
			key->conf.flags |= IEEE80211_KEY_FLAG_RX_MGMT;
		break;
	case NL80211_IFTYPE_ADHOC:
		/* no MFP (yet) */
		break;
	case NL80211_IFTYPE_MESH_POINT:
#ifdef CONFIG_MAC80211_MESH
		if (sdata->u.mesh.security != IEEE80211_MESH_SEC_NONE)
			key->conf.flags |= IEEE80211_KEY_FLAG_RX_MGMT;
		break;
#endif
	case NL80211_IFTYPE_WDS:
	case NL80211_IFTYPE_MONITOR:
	case NL80211_IFTYPE_P2P_DEVICE:
	case NL80211_IFTYPE_UNSPECIFIED:
	case NUM_NL80211_IFTYPES:
	case NL80211_IFTYPE_P2P_CLIENT:
	case NL80211_IFTYPE_P2P_GO:
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	case NL80211_IFTYPE_OCB:
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		/* shouldn't happen */
		WARN_ON_ONCE(1);
		break;
	}

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	if (sta)
		sta->cipher_scheme = cs;

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	err = ieee80211_key_link(key, sdata, sta);
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 out_unlock:
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	mutex_unlock(&local->sta_mtx);
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	return err;
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}

static int ieee80211_del_key(struct wiphy *wiphy, struct net_device *dev,
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			     u8 key_idx, bool pairwise, const u8 *mac_addr)
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{
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	struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
	struct ieee80211_local *local = sdata->local;
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	struct sta_info *sta;
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	struct ieee80211_key *key = NULL;
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	int ret;

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	mutex_lock(&local->sta_mtx);
	mutex_lock(&local->key_mtx);
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	if (mac_addr) {
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		ret = -ENOENT;

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		sta = sta_info_get_bss(sdata, mac_addr);
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		if (!sta)
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			goto out_unlock;
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		if (pairwise)
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			key = key_mtx_dereference(local, sta->ptk[key_idx]);
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		else
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			key = key_mtx_dereference(local, sta->gtk[key_idx]);
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	} else
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		key = key_mtx_dereference(local, sdata->keys[key_idx]);
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	if (!key) {
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		ret = -ENOENT;
		goto out_unlock;
	}
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	ieee80211_key_free(key, true);
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	ret = 0;
 out_unlock:
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	mutex_unlock(&local->key_mtx);
	mutex_unlock(&local->sta_mtx);
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	return ret;
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}

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static int ieee80211_get_key(struct wiphy *wiphy, struct net_device *dev,
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			     u8 key_idx, bool pairwise, const u8 *mac_addr,
			     void *cookie,
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			     void (*callback)(void *cookie,
					      struct key_params *params))
{
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	struct ieee80211_sub_if_data *sdata;
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	struct sta_info *sta = NULL;
	u8 seq[6] = {0};
	struct key_params params;
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	struct ieee80211_key *key = NULL;
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	u64 pn64;
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	u32 iv32;
	u16 iv16;
	int err = -ENOENT;
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	struct ieee80211_key_seq kseq = {};
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	sdata = IEEE80211_DEV_TO_SUB_IF(dev);

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	rcu_read_lock();

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	if (mac_addr) {
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		sta = sta_info_get_bss(sdata, mac_addr);
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		if (!sta)
			goto out;

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		if (pairwise && key_idx < NUM_DEFAULT_KEYS)
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			key = rcu_dereference(sta->ptk[key_idx]);
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		else if (!pairwise &&
			 key_idx < NUM_DEFAULT_KEYS + NUM_DEFAULT_MGMT_KEYS)
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			key = rcu_dereference(sta->gtk[key_idx]);
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	} else
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		key = rcu_dereference(sdata->keys[key_idx]);
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	if (!key)
		goto out;

	memset(&params, 0, sizeof(params));

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	params.cipher = key->conf.cipher;
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	switch (key->conf.cipher) {
	case WLAN_CIPHER_SUITE_TKIP:
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		iv32 = key->u.tkip.tx.iv32;
		iv16 = key->u.tkip.tx.iv16;
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		if (key->flags & KEY_FLAG_UPLOADED_TO_HARDWARE &&
		    !(key->conf.flags & IEEE80211_KEY_FLAG_GENERATE_IV)) {
			drv_get_key_seq(sdata->local, key, &kseq);
			iv32 = kseq.tkip.iv32;
			iv16 = kseq.tkip.iv16;
		}
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		seq[0] = iv16 & 0xff;
		seq[1] = (iv16 >> 8) & 0xff;
		seq[2] = iv32 & 0xff;
		seq[3] = (iv32 >> 8) & 0xff;
		seq[4] = (iv32 >> 16) & 0xff;
		seq[5] = (iv32 >> 24) & 0xff;
		params.seq = seq;
		params.seq_len = 6;
		break;
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	case WLAN_CIPHER_SUITE_CCMP:
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	case WLAN_CIPHER_SUITE_CCMP_256:
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	case WLAN_CIPHER_SUITE_AES_CMAC:
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	case WLAN_CIPHER_SUITE_BIP_CMAC_256:
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		BUILD_BUG_ON(offsetof(typeof(kseq), ccmp) !=
			     offsetof(typeof(kseq), aes_cmac));
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	case WLAN_CIPHER_SUITE_BIP_GMAC_128:
	case WLAN_CIPHER_SUITE_BIP_GMAC_256:
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		BUILD_BUG_ON(offsetof(typeof(kseq), ccmp) !=
			     offsetof(typeof(kseq), aes_gmac));
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	case WLAN_CIPHER_SUITE_GCMP:
	case WLAN_CIPHER_SUITE_GCMP_256:
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		BUILD_BUG_ON(offsetof(typeof(kseq), ccmp) !=
			     offsetof(typeof(kseq), gcmp));

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		if (key->flags & KEY_FLAG_UPLOADED_TO_HARDWARE &&
		    !(key->conf.flags & IEEE80211_KEY_FLAG_GENERATE_IV)) {
			drv_get_key_seq(sdata->local, key, &kseq);
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			memcpy(seq, kseq.ccmp.pn, 6);
381
		} else {
382
			pn64 = atomic64_read(&key->conf.tx_pn);
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			seq[0] = pn64;
			seq[1] = pn64 >> 8;
			seq[2] = pn64 >> 16;
			seq[3] = pn64 >> 24;
			seq[4] = pn64 >> 32;
			seq[5] = pn64 >> 40;
		}
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		params.seq = seq;
		params.seq_len = 6;
		break;
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	default:
		if (!(key->flags & KEY_FLAG_UPLOADED_TO_HARDWARE))
			break;
		if (WARN_ON(key->conf.flags & IEEE80211_KEY_FLAG_GENERATE_IV))
			break;
		drv_get_key_seq(sdata->local, key, &kseq);
		params.seq = kseq.hw.seq;
		params.seq_len = kseq.hw.seq_len;
		break;
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	}

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

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

 out:
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	rcu_read_unlock();
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	return err;
}

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

422
	ieee80211_set_default_key(sdata, key_idx, uni, multi);
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	return 0;
}

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static int ieee80211_config_default_mgmt_key(struct wiphy *wiphy,
					     struct net_device *dev,
					     u8 key_idx)
{
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	struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
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	ieee80211_set_default_mgmt_key(sdata, key_idx);

	return 0;
}

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

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		sband = sta->local->hw.wiphy->bands[
				ieee80211_get_sdata_band(sta->sdata)];
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		brate = sband->bitrates[rate->idx].bitrate;
		rinfo->legacy = DIV_ROUND_UP(brate, 1 << shift);
459
	}
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	if (rate->flags & IEEE80211_TX_RC_40_MHZ_WIDTH)
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		rinfo->bw = RATE_INFO_BW_40;
	else if (rate->flags & IEEE80211_TX_RC_80_MHZ_WIDTH)
		rinfo->bw = RATE_INFO_BW_80;
	else if (rate->flags & IEEE80211_TX_RC_160_MHZ_WIDTH)
		rinfo->bw = RATE_INFO_BW_160;
	else
		rinfo->bw = RATE_INFO_BW_20;
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	if (rate->flags & IEEE80211_TX_RC_SHORT_GI)
		rinfo->flags |= RATE_INFO_FLAGS_SHORT_GI;
}

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

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

	if (sta->last_rx_rate_flag & RX_FLAG_SHORT_GI)
		rinfo->flags |= RATE_INFO_FLAGS_SHORT_GI;
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	if (sta->last_rx_rate_flag & RX_FLAG_5MHZ)
		rinfo->bw = RATE_INFO_BW_5;
	else if (sta->last_rx_rate_flag & RX_FLAG_10MHZ)
		rinfo->bw = RATE_INFO_BW_10;
	else if (sta->last_rx_rate_flag & RX_FLAG_40MHZ)
		rinfo->bw = RATE_INFO_BW_40;
	else if (sta->last_rx_rate_vht_flag & RX_VHT_FLAG_80MHZ)
		rinfo->bw = RATE_INFO_BW_80;
	else if (sta->last_rx_rate_vht_flag & RX_VHT_FLAG_160MHZ)
		rinfo->bw = RATE_INFO_BW_160;
	else
		rinfo->bw = RATE_INFO_BW_20;
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}

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

519
	mutex_lock(&local->sta_mtx);
520

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

528
	mutex_unlock(&local->sta_mtx);
529

530
	return ret;
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}

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

	return drv_get_survey(local, idx, survey);
}

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

549
	mutex_lock(&local->sta_mtx);
550

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

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

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

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

572
	mutex_lock(&local->mtx);
J
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573 574 575 576 577 578 579
	mutex_lock(&local->iflist_mtx);
	if (local->use_chanctx) {
		sdata = rcu_dereference_protected(
				local->monitor_sdata,
				lockdep_is_held(&local->iflist_mtx));
		if (sdata) {
			ieee80211_vif_release_channel(sdata);
580
			ret = ieee80211_vif_use_channel(sdata, chandef,
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581 582 583
					IEEE80211_CHANCTX_EXCLUSIVE);
		}
	} else if (local->open_count == local->monitors) {
584
		local->_oper_chandef = *chandef;
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Johannes Berg 已提交
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
	if (mask & BIT(NL80211_STA_FLAG_MFP)) {
1079
		sta->sta.mfp = !!(set & BIT(NL80211_STA_FLAG_MFP));
1080
		if (set & BIT(NL80211_STA_FLAG_MFP))
J
Johannes Berg 已提交
1081 1082 1083
			set_sta_flag(sta, WLAN_STA_MFP);
		else
			clear_sta_flag(sta, WLAN_STA_MFP);
1084
	}
1085

1086 1087
	if (mask & BIT(NL80211_STA_FLAG_TDLS_PEER)) {
		if (set & BIT(NL80211_STA_FLAG_TDLS_PEER))
J
Johannes Berg 已提交
1088 1089 1090
			set_sta_flag(sta, WLAN_STA_TDLS_PEER);
		else
			clear_sta_flag(sta, WLAN_STA_TDLS_PEER);
1091
	}
1092

1093 1094 1095 1096 1097 1098 1099
	/* 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);

1100 1101 1102 1103
	if (params->sta_modify_mask & STATION_PARAM_APPLY_UAPSD) {
		sta->sta.uapsd_queues = params->uapsd_queues;
		sta->sta.max_sp = params->max_sp;
	}
1104

1105 1106 1107 1108 1109 1110 1111
	/*
	 * 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
1112
	/*
1113 1114 1115 1116 1117
	 * 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
1118 1119
	 */

1120 1121 1122 1123
	if (params->listen_interval >= 0)
		sta->listen_interval = params->listen_interval;

	if (params->supported_rates) {
1124 1125 1126 1127
		ieee80211_parse_bitrates(&sdata->vif.bss_conf.chandef,
					 sband, params->supported_rates,
					 params->supported_rates_len,
					 &sta->sta.supp_rates[band]);
1128
	}
1129

J
Johannes Berg 已提交
1130
	if (params->ht_capa)
B
Ben Greear 已提交
1131
		ieee80211_ht_cap_ie_to_sta_ht_cap(sdata, sband,
1132
						  params->ht_capa, sta);
1133

M
Mahesh Palivela 已提交
1134 1135
	if (params->vht_capa)
		ieee80211_vht_cap_ie_to_sta_vht_cap(sdata, sband,
1136
						    params->vht_capa, sta);
M
Mahesh Palivela 已提交
1137

1138 1139 1140 1141 1142 1143 1144 1145 1146
	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);
	}

1147
	if (ieee80211_vif_is_mesh(&sdata->vif)) {
1148
#ifdef CONFIG_MAC80211_MESH
1149
		u32 changed = 0;
1150 1151

		if (params->sta_modify_mask & STATION_PARAM_APPLY_PLINK_STATE) {
1152
			switch (params->plink_state) {
1153
			case NL80211_PLINK_ESTAB:
1154 1155 1156 1157
				if (sta->plink_state != NL80211_PLINK_ESTAB)
					changed = mesh_plink_inc_estab_count(
							sdata);
				sta->plink_state = params->plink_state;
M
Marco Porsch 已提交
1158 1159

				ieee80211_mps_sta_status_update(sta);
1160 1161
				changed |= ieee80211_mps_set_sta_local_pm(sta,
					      sdata->u.mesh.mshcfg.power_mode);
1162 1163
				break;
			case NL80211_PLINK_LISTEN:
1164
			case NL80211_PLINK_BLOCKED:
1165 1166 1167 1168 1169 1170 1171
			case NL80211_PLINK_OPN_SNT:
			case NL80211_PLINK_OPN_RCVD:
			case NL80211_PLINK_CNF_RCVD:
			case NL80211_PLINK_HOLDING:
				if (sta->plink_state == NL80211_PLINK_ESTAB)
					changed = mesh_plink_dec_estab_count(
							sdata);
1172
				sta->plink_state = params->plink_state;
M
Marco Porsch 已提交
1173 1174

				ieee80211_mps_sta_status_update(sta);
1175 1176
				changed |= ieee80211_mps_set_sta_local_pm(sta,
						NL80211_MESH_POWER_UNKNOWN);
1177 1178 1179 1180 1181
				break;
			default:
				/*  nothing  */
				break;
			}
1182 1183 1184 1185 1186 1187 1188 1189 1190 1191 1192 1193
		}

		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;
1194
		}
M
Marco Porsch 已提交
1195 1196

		if (params->local_pm)
1197 1198 1199
			changed |=
			      ieee80211_mps_set_sta_local_pm(sta,
							     params->local_pm);
1200
		ieee80211_mbss_info_change_notify(sdata, changed);
1201
#endif
J
Johannes Berg 已提交
1202
	}
1203

1204 1205 1206 1207 1208 1209 1210
	/* 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;
	}

1211
	return 0;
1212 1213 1214
}

static int ieee80211_add_station(struct wiphy *wiphy, struct net_device *dev,
1215 1216
				 const u8 *mac,
				 struct station_parameters *params)
1217
{
1218
	struct ieee80211_local *local = wiphy_priv(wiphy);
1219 1220
	struct sta_info *sta;
	struct ieee80211_sub_if_data *sdata;
J
Johannes Berg 已提交
1221
	int err;
1222
	int layer2_update;
1223 1224 1225 1226

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

1227 1228
		if (sdata->vif.type != NL80211_IFTYPE_AP_VLAN &&
		    sdata->vif.type != NL80211_IFTYPE_AP)
1229 1230 1231 1232
			return -EINVAL;
	} else
		sdata = IEEE80211_DEV_TO_SUB_IF(dev);

1233
	if (ether_addr_equal(mac, sdata->vif.addr))
1234 1235 1236 1237 1238 1239
		return -EINVAL;

	if (is_multicast_ether_addr(mac))
		return -EINVAL;

	sta = sta_info_alloc(sdata, mac, GFP_KERNEL);
J
Johannes Berg 已提交
1240 1241
	if (!sta)
		return -ENOMEM;
1242

1243 1244 1245 1246
	/*
	 * defaults -- if userspace wants something else we'll
	 * change it accordingly in sta_apply_parameters()
	 */
1247 1248 1249
	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);
1250 1251
	} else {
		sta->sta.tdls = true;
1252
	}
1253

1254 1255 1256 1257 1258
	err = sta_apply_parameters(local, sta, params);
	if (err) {
		sta_info_free(local, sta);
		return err;
	}
1259

1260
	/*
1261 1262
	 * for TDLS, rate control should be initialized only when
	 * rates are known and station is marked authorized
1263 1264 1265
	 */
	if (!test_sta_flag(sta, WLAN_STA_TDLS_PEER))
		rate_control_rate_init(sta);
1266

1267 1268 1269
	layer2_update = sdata->vif.type == NL80211_IFTYPE_AP_VLAN ||
		sdata->vif.type == NL80211_IFTYPE_AP;

1270
	err = sta_info_insert_rcu(sta);
J
Johannes Berg 已提交
1271 1272 1273 1274 1275
	if (err) {
		rcu_read_unlock();
		return err;
	}

1276
	if (layer2_update)
J
Johannes Berg 已提交
1277 1278 1279 1280
		ieee80211_send_layer2_update(sta);

	rcu_read_unlock();

1281 1282 1283 1284
	return 0;
}

static int ieee80211_del_station(struct wiphy *wiphy, struct net_device *dev,
1285
				 struct station_del_parameters *params)
1286
{
1287
	struct ieee80211_sub_if_data *sdata;
1288

1289 1290
	sdata = IEEE80211_DEV_TO_SUB_IF(dev);

1291 1292
	if (params->mac)
		return sta_info_destroy_addr_bss(sdata, params->mac);
1293

1294
	sta_info_flush(sdata);
1295 1296 1297 1298
	return 0;
}

static int ieee80211_change_station(struct wiphy *wiphy,
1299
				    struct net_device *dev, const u8 *mac,
1300 1301
				    struct station_parameters *params)
{
1302
	struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1303
	struct ieee80211_local *local = wiphy_priv(wiphy);
1304 1305
	struct sta_info *sta;
	struct ieee80211_sub_if_data *vlansdata;
1306
	enum cfg80211_station_type statype;
1307
	int err;
1308

1309
	mutex_lock(&local->sta_mtx);
J
Johannes Berg 已提交
1310

1311
	sta = sta_info_get_bss(sdata, mac);
J
Johannes Berg 已提交
1312
	if (!sta) {
1313 1314
		err = -ENOENT;
		goto out_err;
J
Johannes Berg 已提交
1315
	}
1316

1317 1318
	switch (sdata->vif.type) {
	case NL80211_IFTYPE_MESH_POINT:
1319
		if (sdata->u.mesh.user_mpm)
1320
			statype = CFG80211_STA_MESH_PEER_USER;
1321
		else
1322
			statype = CFG80211_STA_MESH_PEER_KERNEL;
1323 1324 1325 1326 1327 1328 1329 1330 1331 1332 1333 1334 1335 1336 1337 1338 1339 1340 1341 1342 1343
		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;
1344 1345
	}

1346 1347 1348 1349
	err = cfg80211_check_station_change(wiphy, params, statype);
	if (err)
		goto out_err;

1350
	if (params->vlan && params->vlan != sta->sdata->dev) {
1351 1352 1353
		bool prev_4addr = false;
		bool new_4addr = false;

1354 1355
		vlansdata = IEEE80211_DEV_TO_SUB_IF(params->vlan);

1356
		if (params->vlan->ieee80211_ptr->use_4addr) {
J
Johannes Berg 已提交
1357
			if (vlansdata->u.vlan.sta) {
1358 1359
				err = -EBUSY;
				goto out_err;
J
Johannes Berg 已提交
1360
			}
1361

1362
			rcu_assign_pointer(vlansdata->u.vlan.sta, sta);
1363 1364 1365 1366 1367
			new_4addr = true;
		}

		if (sta->sdata->vif.type == NL80211_IFTYPE_AP_VLAN &&
		    sta->sdata->u.vlan.sta) {
M
Monam Agarwal 已提交
1368
			RCU_INIT_POINTER(sta->sdata->u.vlan.sta, NULL);
1369
			prev_4addr = true;
1370 1371
		}

1372
		sta->sdata = vlansdata;
1373
		ieee80211_check_fast_xmit(sta);
1374 1375 1376 1377 1378 1379 1380 1381 1382

		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);
		}

1383 1384 1385
		ieee80211_send_layer2_update(sta);
	}

1386
	err = sta_apply_parameters(local, sta, params);
1387 1388
	if (err)
		goto out_err;
1389

1390
	mutex_unlock(&local->sta_mtx);
J
Johannes Berg 已提交
1391

1392 1393 1394 1395 1396 1397 1398 1399 1400 1401 1402 1403 1404 1405
	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);
	}

1406
	if (sdata->vif.type == NL80211_IFTYPE_STATION &&
E
Eliad Peller 已提交
1407
	    params->sta_flags_mask & BIT(NL80211_STA_FLAG_AUTHORIZED)) {
1408
		ieee80211_recalc_ps(local, -1);
E
Eliad Peller 已提交
1409 1410
		ieee80211_recalc_ps_vif(sdata);
	}
1411

1412
	return 0;
1413 1414 1415
out_err:
	mutex_unlock(&local->sta_mtx);
	return err;
1416 1417
}

1418 1419
#ifdef CONFIG_MAC80211_MESH
static int ieee80211_add_mpath(struct wiphy *wiphy, struct net_device *dev,
1420
			       const u8 *dst, const u8 *next_hop)
1421
{
1422
	struct ieee80211_sub_if_data *sdata;
1423 1424 1425
	struct mesh_path *mpath;
	struct sta_info *sta;

1426 1427
	sdata = IEEE80211_DEV_TO_SUB_IF(dev);

1428
	rcu_read_lock();
1429
	sta = sta_info_get(sdata, next_hop);
1430 1431
	if (!sta) {
		rcu_read_unlock();
1432
		return -ENOENT;
1433
	}
1434

1435 1436
	mpath = mesh_path_add(sdata, dst);
	if (IS_ERR(mpath)) {
1437
		rcu_read_unlock();
1438
		return PTR_ERR(mpath);
1439
	}
1440 1441

	mesh_path_fix_nexthop(mpath, sta);
1442

1443 1444 1445 1446 1447
	rcu_read_unlock();
	return 0;
}

static int ieee80211_del_mpath(struct wiphy *wiphy, struct net_device *dev,
1448
			       const u8 *dst)
1449
{
1450 1451
	struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);

1452
	if (dst)
J
Johannes Berg 已提交
1453
		return mesh_path_del(sdata, dst);
1454

1455
	mesh_path_flush_by_iface(sdata);
1456 1457 1458
	return 0;
}

1459 1460
static int ieee80211_change_mpath(struct wiphy *wiphy, struct net_device *dev,
				  const u8 *dst, const u8 *next_hop)
1461
{
1462
	struct ieee80211_sub_if_data *sdata;
1463 1464 1465
	struct mesh_path *mpath;
	struct sta_info *sta;

1466 1467
	sdata = IEEE80211_DEV_TO_SUB_IF(dev);

1468 1469
	rcu_read_lock();

1470
	sta = sta_info_get(sdata, next_hop);
1471 1472
	if (!sta) {
		rcu_read_unlock();
1473
		return -ENOENT;
1474
	}
1475

J
Johannes Berg 已提交
1476
	mpath = mesh_path_lookup(sdata, dst);
1477 1478 1479 1480 1481 1482
	if (!mpath) {
		rcu_read_unlock();
		return -ENOENT;
	}

	mesh_path_fix_nexthop(mpath, sta);
1483

1484 1485 1486 1487 1488 1489 1490
	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
1491 1492 1493 1494
	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);
1495
	else
1496
		eth_zero_addr(next_hop);
1497

1498 1499
	memset(pinfo, 0, sizeof(*pinfo));

1500 1501
	pinfo->generation = mesh_paths_generation;

1502
	pinfo->filled = MPATH_INFO_FRAME_QLEN |
1503
			MPATH_INFO_SN |
1504 1505 1506 1507 1508 1509 1510
			MPATH_INFO_METRIC |
			MPATH_INFO_EXPTIME |
			MPATH_INFO_DISCOVERY_TIMEOUT |
			MPATH_INFO_DISCOVERY_RETRIES |
			MPATH_INFO_FLAGS;

	pinfo->frame_qlen = mpath->frame_queue.qlen;
1511
	pinfo->sn = mpath->sn;
1512 1513 1514 1515 1516 1517 1518 1519 1520 1521
	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;
1522 1523
	if (mpath->flags & MESH_PATH_SN_VALID)
		pinfo->flags |= NL80211_MPATH_FLAG_SN_VALID;
1524 1525
	if (mpath->flags & MESH_PATH_FIXED)
		pinfo->flags |= NL80211_MPATH_FLAG_FIXED;
1526 1527
	if (mpath->flags & MESH_PATH_RESOLVED)
		pinfo->flags |= NL80211_MPATH_FLAG_RESOLVED;
1528 1529 1530 1531 1532 1533
}

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

{
1534
	struct ieee80211_sub_if_data *sdata;
1535 1536
	struct mesh_path *mpath;

1537 1538
	sdata = IEEE80211_DEV_TO_SUB_IF(dev);

1539
	rcu_read_lock();
J
Johannes Berg 已提交
1540
	mpath = mesh_path_lookup(sdata, dst);
1541 1542 1543 1544 1545 1546 1547 1548 1549 1550 1551
	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,
1552 1553
				int idx, u8 *dst, u8 *next_hop,
				struct mpath_info *pinfo)
1554
{
1555
	struct ieee80211_sub_if_data *sdata;
1556 1557
	struct mesh_path *mpath;

1558 1559
	sdata = IEEE80211_DEV_TO_SUB_IF(dev);

1560
	rcu_read_lock();
J
Johannes Berg 已提交
1561
	mpath = mesh_path_lookup_by_idx(sdata, idx);
1562 1563 1564 1565 1566 1567 1568 1569 1570
	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;
}
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 1622
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;
}

1623
static int ieee80211_get_mesh_config(struct wiphy *wiphy,
1624 1625 1626 1627 1628 1629 1630 1631 1632 1633 1634 1635 1636 1637 1638
				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;
}

1639 1640 1641 1642 1643
static int copy_mesh_setup(struct ieee80211_if_mesh *ifmsh,
		const struct mesh_setup *setup)
{
	u8 *new_ie;
	const u8 *old_ie;
1644 1645
	struct ieee80211_sub_if_data *sdata = container_of(ifmsh,
					struct ieee80211_sub_if_data, u.mesh);
1646

1647
	/* allocate information elements */
1648
	new_ie = NULL;
1649
	old_ie = ifmsh->ie;
1650

1651 1652
	if (setup->ie_len) {
		new_ie = kmemdup(setup->ie, setup->ie_len,
1653 1654 1655 1656
				GFP_KERNEL);
		if (!new_ie)
			return -ENOMEM;
	}
1657 1658 1659
	ifmsh->ie_len = setup->ie_len;
	ifmsh->ie = new_ie;
	kfree(old_ie);
1660 1661 1662 1663

	/* 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);
1664
	ifmsh->mesh_sp_id = setup->sync_method;
1665 1666
	ifmsh->mesh_pp_id = setup->path_sel_proto;
	ifmsh->mesh_pm_id = setup->path_metric;
1667
	ifmsh->user_mpm = setup->user_mpm;
1668
	ifmsh->mesh_auth_id = setup->auth_id;
1669 1670 1671 1672 1673
	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;
1674

1675 1676 1677
	/* mcast rate setting in Mesh Node */
	memcpy(sdata->vif.bss_conf.mcast_rate, setup->mcast_rate,
						sizeof(setup->mcast_rate));
1678
	sdata->vif.bss_conf.basic_rates = setup->basic_rates;
1679

1680 1681 1682
	sdata->vif.bss_conf.beacon_int = setup->beacon_interval;
	sdata->vif.bss_conf.dtim_period = setup->dtim_period;

1683 1684 1685
	return 0;
}

1686
static int ieee80211_update_mesh_config(struct wiphy *wiphy,
1687 1688
					struct net_device *dev, u32 mask,
					const struct mesh_config *nconf)
1689 1690 1691
{
	struct mesh_config *conf;
	struct ieee80211_sub_if_data *sdata;
1692 1693
	struct ieee80211_if_mesh *ifmsh;

1694
	sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1695
	ifmsh = &sdata->u.mesh;
1696 1697 1698 1699 1700 1701 1702 1703 1704 1705 1706 1707 1708 1709 1710

	/* 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;
1711
	if (_chg_mesh_attr(NL80211_MESHCONF_ELEMENT_TTL, mask))
1712
		conf->element_ttl = nconf->element_ttl;
1713 1714 1715
	if (_chg_mesh_attr(NL80211_MESHCONF_AUTO_OPEN_PLINKS, mask)) {
		if (ifmsh->user_mpm)
			return -EBUSY;
1716
		conf->auto_open_plinks = nconf->auto_open_plinks;
1717
	}
1718 1719 1720
	if (_chg_mesh_attr(NL80211_MESHCONF_SYNC_OFFSET_MAX_NEIGHBOR, mask))
		conf->dot11MeshNbrOffsetMaxNeighbor =
			nconf->dot11MeshNbrOffsetMaxNeighbor;
1721 1722 1723 1724 1725 1726 1727 1728 1729 1730 1731 1732 1733
	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;
1734 1735 1736
	if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_PERR_MIN_INTERVAL, mask))
		conf->dot11MeshHWMPperrMinInterval =
			nconf->dot11MeshHWMPperrMinInterval;
1737 1738 1739 1740
	if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME,
			   mask))
		conf->dot11MeshHWMPnetDiameterTraversalTime =
			nconf->dot11MeshHWMPnetDiameterTraversalTime;
1741 1742 1743 1744
	if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_ROOTMODE, mask)) {
		conf->dot11MeshHWMPRootMode = nconf->dot11MeshHWMPRootMode;
		ieee80211_mesh_root_setup(ifmsh);
	}
1745
	if (_chg_mesh_attr(NL80211_MESHCONF_GATE_ANNOUNCEMENTS, mask)) {
T
Thomas Pedersen 已提交
1746 1747 1748 1749
		/* our current gate announcement implementation rides on root
		 * announcements, so require this ifmsh to also be a root node
		 * */
		if (nconf->dot11MeshGateAnnouncementProtocol &&
1750 1751
		    !(conf->dot11MeshHWMPRootMode > IEEE80211_ROOTMODE_ROOT)) {
			conf->dot11MeshHWMPRootMode = IEEE80211_PROACTIVE_RANN;
T
Thomas Pedersen 已提交
1752 1753
			ieee80211_mesh_root_setup(ifmsh);
		}
1754 1755 1756
		conf->dot11MeshGateAnnouncementProtocol =
			nconf->dot11MeshGateAnnouncementProtocol;
	}
1757
	if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_RANN_INTERVAL, mask))
1758 1759
		conf->dot11MeshHWMPRannInterval =
			nconf->dot11MeshHWMPRannInterval;
1760 1761
	if (_chg_mesh_attr(NL80211_MESHCONF_FORWARDING, mask))
		conf->dot11MeshForwarding = nconf->dot11MeshForwarding;
1762 1763 1764 1765 1766 1767 1768 1769
	if (_chg_mesh_attr(NL80211_MESHCONF_RSSI_THRESHOLD, mask)) {
		/* our RSSI threshold implementation is supported only for
		 * devices that report signal in dBm.
		 */
		if (!(sdata->local->hw.flags & IEEE80211_HW_SIGNAL_DBM))
			return -ENOTSUPP;
		conf->rssi_threshold = nconf->rssi_threshold;
	}
1770 1771 1772 1773 1774
	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);
	}
1775 1776 1777 1778 1779 1780
	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;
1781 1782 1783
	if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_CONFIRMATION_INTERVAL, mask))
		conf->dot11MeshHWMPconfirmationInterval =
			nconf->dot11MeshHWMPconfirmationInterval;
M
Marco Porsch 已提交
1784 1785 1786 1787
	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
1788
	if (_chg_mesh_attr(NL80211_MESHCONF_AWAKE_WINDOW, mask))
M
Marco Porsch 已提交
1789 1790
		conf->dot11MeshAwakeWindowDuration =
			nconf->dot11MeshAwakeWindowDuration;
1791 1792
	if (_chg_mesh_attr(NL80211_MESHCONF_PLINK_TIMEOUT, mask))
		conf->plink_timeout = nconf->plink_timeout;
T
Thomas Pedersen 已提交
1793
	ieee80211_mbss_info_change_notify(sdata, BSS_CHANGED_BEACON);
1794 1795 1796
	return 0;
}

1797 1798 1799 1800 1801 1802
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;
1803
	int err;
1804

1805 1806 1807 1808
	memcpy(&ifmsh->mshcfg, conf, sizeof(struct mesh_config));
	err = copy_mesh_setup(ifmsh, setup);
	if (err)
		return err;
1809

1810 1811 1812 1813
	/* can mesh use other SMPS modes? */
	sdata->smps_mode = IEEE80211_SMPS_OFF;
	sdata->needed_rx_chains = sdata->local->rx_chains;

1814
	mutex_lock(&sdata->local->mtx);
1815
	err = ieee80211_vif_use_channel(sdata, &setup->chandef,
J
Johannes Berg 已提交
1816
					IEEE80211_CHANCTX_SHARED);
1817
	mutex_unlock(&sdata->local->mtx);
1818 1819 1820
	if (err)
		return err;

T
Thomas Pedersen 已提交
1821
	return ieee80211_start_mesh(sdata);
1822 1823 1824 1825 1826 1827 1828
}

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);
1829
	mutex_lock(&sdata->local->mtx);
J
Johannes Berg 已提交
1830
	ieee80211_vif_release_channel(sdata);
1831
	mutex_unlock(&sdata->local->mtx);
1832 1833 1834

	return 0;
}
1835 1836
#endif

1837 1838 1839 1840
static int ieee80211_change_bss(struct wiphy *wiphy,
				struct net_device *dev,
				struct bss_parameters *params)
{
J
Johannes Berg 已提交
1841 1842
	struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
	enum ieee80211_band band;
1843 1844
	u32 changed = 0;

1845
	if (!sdata_dereference(sdata->u.ap.beacon, sdata))
J
Johannes Berg 已提交
1846 1847 1848
		return -ENOENT;

	band = ieee80211_get_sdata_band(sdata);
1849 1850

	if (params->use_cts_prot >= 0) {
J
Johannes Berg 已提交
1851
		sdata->vif.bss_conf.use_cts_prot = params->use_cts_prot;
1852 1853 1854
		changed |= BSS_CHANGED_ERP_CTS_PROT;
	}
	if (params->use_short_preamble >= 0) {
J
Johannes Berg 已提交
1855
		sdata->vif.bss_conf.use_short_preamble =
1856 1857 1858
			params->use_short_preamble;
		changed |= BSS_CHANGED_ERP_PREAMBLE;
	}
1859 1860

	if (!sdata->vif.bss_conf.use_short_slot &&
J
Johannes Berg 已提交
1861
	    band == IEEE80211_BAND_5GHZ) {
1862 1863 1864 1865
		sdata->vif.bss_conf.use_short_slot = true;
		changed |= BSS_CHANGED_ERP_SLOT;
	}

1866
	if (params->use_short_slot_time >= 0) {
J
Johannes Berg 已提交
1867
		sdata->vif.bss_conf.use_short_slot =
1868 1869 1870 1871
			params->use_short_slot_time;
		changed |= BSS_CHANGED_ERP_SLOT;
	}

1872
	if (params->basic_rates) {
1873 1874 1875 1876 1877
		ieee80211_parse_bitrates(&sdata->vif.bss_conf.chandef,
					 wiphy->bands[band],
					 params->basic_rates,
					 params->basic_rates_len,
					 &sdata->vif.bss_conf.basic_rates);
1878 1879 1880
		changed |= BSS_CHANGED_BASIC_RATES;
	}

1881 1882 1883 1884 1885 1886 1887
	if (params->ap_isolate >= 0) {
		if (params->ap_isolate)
			sdata->flags |= IEEE80211_SDATA_DONT_BRIDGE_PACKETS;
		else
			sdata->flags &= ~IEEE80211_SDATA_DONT_BRIDGE_PACKETS;
	}

1888 1889 1890 1891 1892 1893
	if (params->ht_opmode >= 0) {
		sdata->vif.bss_conf.ht_operation_mode =
			(u16) params->ht_opmode;
		changed |= BSS_CHANGED_HT;
	}

1894
	if (params->p2p_ctwindow >= 0) {
J
Janusz Dziedzic 已提交
1895 1896 1897 1898
		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;
1899 1900 1901
		changed |= BSS_CHANGED_P2P_PS;
	}

J
Janusz Dziedzic 已提交
1902 1903 1904 1905 1906 1907 1908
	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;
1909 1910 1911
		changed |= BSS_CHANGED_P2P_PS;
	}

1912 1913 1914 1915 1916
	ieee80211_bss_info_change_notify(sdata, changed);

	return 0;
}

1917
static int ieee80211_set_txq_params(struct wiphy *wiphy,
1918
				    struct net_device *dev,
1919 1920 1921
				    struct ieee80211_txq_params *params)
{
	struct ieee80211_local *local = wiphy_priv(wiphy);
1922
	struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1923 1924 1925 1926 1927
	struct ieee80211_tx_queue_params p;

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

1928 1929 1930
	if (local->hw.queues < IEEE80211_NUM_ACS)
		return -EOPNOTSUPP;

1931 1932 1933 1934 1935
	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
1936 1937 1938 1939 1940 1941 1942

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

1943 1944
	sdata->tx_conf[params->ac] = p;
	if (drv_conf_tx(local, sdata, params->ac, &p)) {
J
Joe Perches 已提交
1945
		wiphy_debug(local->hw.wiphy,
1946 1947
			    "failed to set TX queue parameters for AC %d\n",
			    params->ac);
1948 1949 1950
		return -EINVAL;
	}

1951 1952
	ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_QOS);

1953 1954 1955
	return 0;
}

1956
#ifdef CONFIG_PM
J
Johannes Berg 已提交
1957 1958
static int ieee80211_suspend(struct wiphy *wiphy,
			     struct cfg80211_wowlan *wowlan)
1959
{
1960
	return __ieee80211_suspend(wiphy_priv(wiphy), wowlan);
1961 1962 1963 1964 1965 1966 1967 1968 1969 1970 1971
}

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

1972 1973 1974
static int ieee80211_scan(struct wiphy *wiphy,
			  struct cfg80211_scan_request *req)
{
J
Johannes Berg 已提交
1975 1976 1977
	struct ieee80211_sub_if_data *sdata;

	sdata = IEEE80211_WDEV_TO_SUB_IF(req->wdev);
1978

1979 1980 1981 1982 1983
	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:
1984
	case NL80211_IFTYPE_P2P_DEVICE:
1985 1986 1987 1988
		break;
	case NL80211_IFTYPE_P2P_GO:
		if (sdata->local->ops->hw_scan)
			break;
1989 1990 1991 1992 1993
		/*
		 * FIXME: implement NoA while scanning in software,
		 * for now fall through to allow scanning only when
		 * beaconing hasn't been configured yet
		 */
1994
	case NL80211_IFTYPE_AP:
1995 1996 1997 1998 1999 2000 2001 2002 2003 2004
		/*
		 * 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)))
2005 2006 2007 2008 2009
			return -EOPNOTSUPP;
		break;
	default:
		return -EOPNOTSUPP;
	}
2010 2011 2012 2013

	return ieee80211_request_scan(sdata, req);
}

2014 2015 2016 2017 2018 2019 2020 2021 2022 2023 2024 2025 2026 2027
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
2028
ieee80211_sched_scan_stop(struct wiphy *wiphy, struct net_device *dev)
2029 2030 2031 2032 2033 2034
{
	struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);

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

2035
	return ieee80211_request_sched_scan_stop(sdata);
2036 2037
}

2038 2039 2040
static int ieee80211_auth(struct wiphy *wiphy, struct net_device *dev,
			  struct cfg80211_auth_request *req)
{
2041
	return ieee80211_mgd_auth(IEEE80211_DEV_TO_SUB_IF(dev), req);
2042 2043 2044 2045 2046
}

static int ieee80211_assoc(struct wiphy *wiphy, struct net_device *dev,
			   struct cfg80211_assoc_request *req)
{
2047
	return ieee80211_mgd_assoc(IEEE80211_DEV_TO_SUB_IF(dev), req);
2048 2049 2050
}

static int ieee80211_deauth(struct wiphy *wiphy, struct net_device *dev,
2051
			    struct cfg80211_deauth_request *req)
2052
{
2053
	return ieee80211_mgd_deauth(IEEE80211_DEV_TO_SUB_IF(dev), req);
2054 2055 2056
}

static int ieee80211_disassoc(struct wiphy *wiphy, struct net_device *dev,
2057
			      struct cfg80211_disassoc_request *req)
2058
{
2059
	return ieee80211_mgd_disassoc(IEEE80211_DEV_TO_SUB_IF(dev), req);
2060 2061
}

2062 2063 2064
static int ieee80211_join_ibss(struct wiphy *wiphy, struct net_device *dev,
			       struct cfg80211_ibss_params *params)
{
J
Johannes Berg 已提交
2065
	return ieee80211_ibss_join(IEEE80211_DEV_TO_SUB_IF(dev), params);
2066 2067 2068 2069
}

static int ieee80211_leave_ibss(struct wiphy *wiphy, struct net_device *dev)
{
J
Johannes Berg 已提交
2070
	return ieee80211_ibss_leave(IEEE80211_DEV_TO_SUB_IF(dev));
2071 2072
}

2073 2074 2075 2076 2077 2078 2079 2080 2081 2082 2083
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));
}

2084 2085 2086 2087 2088
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);

2089 2090
	memcpy(sdata->vif.bss_conf.mcast_rate, rate,
	       sizeof(int) * IEEE80211_NUM_BANDS);
2091 2092 2093 2094

	return 0;
}

2095 2096 2097
static int ieee80211_set_wiphy_params(struct wiphy *wiphy, u32 changed)
{
	struct ieee80211_local *local = wiphy_priv(wiphy);
2098
	int err;
2099

2100
	if (changed & WIPHY_PARAM_FRAG_THRESHOLD) {
J
Johannes Berg 已提交
2101 2102
		ieee80211_check_fast_xmit_all(local);

2103 2104
		err = drv_set_frag_threshold(local, wiphy->frag_threshold);

J
Johannes Berg 已提交
2105 2106
		if (err) {
			ieee80211_check_fast_xmit_all(local);
2107
			return err;
J
Johannes Berg 已提交
2108
		}
2109 2110
	}

2111 2112 2113 2114 2115 2116 2117
	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);
2118 2119 2120 2121 2122

		if (err)
			return err;
	}

2123
	if (changed & WIPHY_PARAM_RTS_THRESHOLD) {
2124
		err = drv_set_rts_threshold(local, wiphy->rts_threshold);
2125

2126 2127
		if (err)
			return err;
2128 2129
	}

2130 2131 2132
	if (changed & WIPHY_PARAM_RETRY_SHORT) {
		if (wiphy->retry_short > IEEE80211_MAX_TX_RETRY)
			return -EINVAL;
2133
		local->hw.conf.short_frame_max_tx_count = wiphy->retry_short;
2134 2135 2136 2137
	}
	if (changed & WIPHY_PARAM_RETRY_LONG) {
		if (wiphy->retry_long > IEEE80211_MAX_TX_RETRY)
			return -EINVAL;
2138
		local->hw.conf.long_frame_max_tx_count = wiphy->retry_long;
2139
	}
2140 2141 2142 2143 2144 2145 2146
	if (changed &
	    (WIPHY_PARAM_RETRY_SHORT | WIPHY_PARAM_RETRY_LONG))
		ieee80211_hw_config(local, IEEE80211_CONF_CHANGE_RETRY_LIMITS);

	return 0;
}

2147
static int ieee80211_set_tx_power(struct wiphy *wiphy,
2148
				  struct wireless_dev *wdev,
2149
				  enum nl80211_tx_power_setting type, int mbm)
2150 2151
{
	struct ieee80211_local *local = wiphy_priv(wiphy);
2152
	struct ieee80211_sub_if_data *sdata;
2153 2154
	enum nl80211_tx_power_setting txp_type = type;
	bool update_txp_type = false;
2155

2156 2157 2158 2159 2160 2161
	if (wdev) {
		sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);

		switch (type) {
		case NL80211_TX_POWER_AUTOMATIC:
			sdata->user_power_level = IEEE80211_UNSET_POWER_LEVEL;
2162
			txp_type = NL80211_TX_POWER_LIMITED;
2163 2164 2165 2166 2167 2168 2169 2170 2171
			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;
		}

2172 2173 2174 2175 2176 2177
		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);
2178 2179 2180

		return 0;
	}
J
Johannes Berg 已提交
2181

2182
	switch (type) {
2183
	case NL80211_TX_POWER_AUTOMATIC:
2184
		local->user_power_level = IEEE80211_UNSET_POWER_LEVEL;
2185
		txp_type = NL80211_TX_POWER_LIMITED;
2186
		break;
2187 2188 2189 2190 2191
	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);
2192 2193 2194
		break;
	}

2195
	mutex_lock(&local->iflist_mtx);
2196
	list_for_each_entry(sdata, &local->interfaces, list) {
2197
		sdata->user_power_level = local->user_power_level;
2198 2199 2200 2201
		if (txp_type != sdata->vif.bss_conf.txpower_type)
			update_txp_type = true;
		sdata->vif.bss_conf.txpower_type = txp_type;
	}
2202
	list_for_each_entry(sdata, &local->interfaces, list)
2203
		ieee80211_recalc_txpower(sdata, update_txp_type);
2204
	mutex_unlock(&local->iflist_mtx);
2205 2206 2207 2208

	return 0;
}

2209 2210 2211
static int ieee80211_get_tx_power(struct wiphy *wiphy,
				  struct wireless_dev *wdev,
				  int *dbm)
2212 2213
{
	struct ieee80211_local *local = wiphy_priv(wiphy);
2214
	struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
2215

2216 2217 2218
	if (local->ops->get_txpower)
		return drv_get_txpower(local, sdata, dbm);

2219 2220 2221 2222
	if (!local->use_chanctx)
		*dbm = local->hw.conf.power_level;
	else
		*dbm = sdata->vif.bss_conf.txpower;
2223 2224 2225 2226

	return 0;
}

J
Johannes Berg 已提交
2227
static int ieee80211_set_wds_peer(struct wiphy *wiphy, struct net_device *dev,
J
Johannes Berg 已提交
2228
				  const u8 *addr)
J
Johannes Berg 已提交
2229 2230 2231 2232 2233 2234 2235 2236
{
	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
2237 2238 2239 2240 2241 2242 2243
static void ieee80211_rfkill_poll(struct wiphy *wiphy)
{
	struct ieee80211_local *local = wiphy_priv(wiphy);

	drv_rfkill_poll(local);
}

2244
#ifdef CONFIG_NL80211_TESTMODE
2245 2246 2247
static int ieee80211_testmode_cmd(struct wiphy *wiphy,
				  struct wireless_dev *wdev,
				  void *data, int len)
2248 2249
{
	struct ieee80211_local *local = wiphy_priv(wiphy);
2250
	struct ieee80211_vif *vif = NULL;
2251 2252 2253 2254

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

2255 2256 2257 2258 2259 2260 2261 2262 2263
	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);
2264
}
W
Wey-Yi Guy 已提交
2265 2266 2267 2268 2269 2270 2271 2272 2273 2274 2275 2276 2277

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);
}
2278 2279
#endif

2280 2281 2282 2283 2284 2285 2286 2287 2288 2289 2290 2291 2292 2293 2294 2295 2296 2297 2298 2299 2300 2301 2302 2303 2304 2305 2306 2307
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,
2308
	       "SMPS %d requested in AP mode, sending Action frame to %d stations\n",
2309 2310 2311
	       smps_mode, atomic_read(&sdata->u.ap.num_mcast_sta));

	mutex_lock(&sdata->local->sta_mtx);
2312 2313 2314 2315 2316 2317 2318
	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;
2319

2320 2321 2322
		/* This station doesn't support MIMO - skip it */
		if (sta_info_tx_streams(sta) == 1)
			continue;
2323

2324 2325 2326 2327 2328 2329 2330 2331 2332 2333 2334
		/*
		 * 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;
		}
2335

2336 2337 2338 2339 2340 2341
		/*
		 * 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;
2342

2343 2344 2345
		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);
2346 2347 2348 2349 2350 2351 2352 2353 2354 2355 2356
	}
	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)
2357 2358 2359 2360 2361
{
	const u8 *ap;
	enum ieee80211_smps_mode old_req;
	int err;

2362
	lockdep_assert_held(&sdata->wdev.mtx);
2363

2364 2365 2366
	if (WARN_ON_ONCE(sdata->vif.type != NL80211_IFTYPE_STATION))
		return -EINVAL;

2367 2368 2369 2370 2371 2372 2373 2374 2375
	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
2376 2377
	 * association, there's no need to do anything, just store
	 * the new value until we associate.
2378 2379
	 */
	if (!sdata->u.mgd.associated ||
2380
	    sdata->vif.bss_conf.chandef.width == NL80211_CHAN_WIDTH_20_NOHT)
2381 2382
		return 0;

2383
	ap = sdata->u.mgd.associated->bssid;
2384 2385 2386 2387 2388 2389 2390 2391 2392 2393 2394 2395 2396 2397 2398 2399 2400

	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
2401 2402 2403 2404 2405 2406
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);

2407
	if (sdata->vif.type != NL80211_IFTYPE_STATION)
2408 2409
		return -EOPNOTSUPP;

J
Johannes Berg 已提交
2410 2411 2412 2413
	if (!(local->hw.flags & IEEE80211_HW_SUPPORTS_PS))
		return -EOPNOTSUPP;

	if (enabled == sdata->u.mgd.powersave &&
2414
	    timeout == local->dynamic_ps_forced_timeout)
J
Johannes Berg 已提交
2415 2416 2417
		return 0;

	sdata->u.mgd.powersave = enabled;
2418
	local->dynamic_ps_forced_timeout = timeout;
J
Johannes Berg 已提交
2419

2420
	/* no change, but if automatic follow powersave */
2421
	sdata_lock(sdata);
2422
	__ieee80211_request_smps_mgd(sdata, sdata->u.mgd.req_smps);
2423
	sdata_unlock(sdata);
2424

J
Johannes Berg 已提交
2425 2426 2427 2428
	if (local->hw.flags & IEEE80211_HW_SUPPORTS_DYNAMIC_PS)
		ieee80211_hw_config(local, IEEE80211_CONF_CHANGE_PS);

	ieee80211_recalc_ps(local, -1);
E
Eliad Peller 已提交
2429
	ieee80211_recalc_ps_vif(sdata);
J
Johannes Berg 已提交
2430 2431 2432 2433

	return 0;
}

2434 2435 2436 2437 2438 2439 2440 2441 2442 2443 2444 2445 2446 2447 2448 2449
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 */
2450 2451
	if (sdata->u.mgd.associated &&
	    sdata->vif.driver_flags & IEEE80211_VIF_SUPPORTS_CQM_RSSI)
2452 2453 2454 2455 2456
		ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_CQM);

	return 0;
}

J
Johannes Berg 已提交
2457 2458 2459 2460 2461 2462 2463
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);
2464
	int i, ret;
2465

2466 2467 2468
	if (!ieee80211_sdata_running(sdata))
		return -ENETDOWN;

2469 2470 2471 2472 2473
	if (local->hw.flags & IEEE80211_HW_HAS_RATE_CONTROL) {
		ret = drv_set_bitrate_mask(local, sdata, mask);
		if (ret)
			return ret;
	}
J
Johannes Berg 已提交
2474

2475
	for (i = 0; i < IEEE80211_NUM_BANDS; i++) {
2476 2477 2478
		struct ieee80211_supported_band *sband = wiphy->bands[i];
		int j;

2479
		sdata->rc_rateidx_mask[i] = mask->control[i].legacy;
2480 2481
		memcpy(sdata->rc_rateidx_mcs_mask[i], mask->control[i].ht_mcs,
		       sizeof(mask->control[i].ht_mcs));
2482 2483 2484 2485 2486 2487 2488 2489 2490 2491

		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;
			}
2492
	}
J
Johannes Berg 已提交
2493

2494
	return 0;
J
Johannes Berg 已提交
2495 2496
}

2497 2498 2499 2500 2501 2502 2503 2504 2505 2506 2507 2508 2509 2510 2511 2512 2513 2514 2515 2516 2517 2518 2519 2520 2521 2522 2523 2524 2525 2526 2527 2528 2529 2530 2531 2532 2533 2534 2535 2536 2537 2538 2539 2540 2541 2542 2543 2544 2545 2546 2547 2548
static bool ieee80211_coalesce_started_roc(struct ieee80211_local *local,
					   struct ieee80211_roc_work *new_roc,
					   struct ieee80211_roc_work *cur_roc)
{
	unsigned long j = jiffies;
	unsigned long cur_roc_end = cur_roc->hw_start_time +
				    msecs_to_jiffies(cur_roc->duration);
	struct ieee80211_roc_work *next_roc;
	int new_dur;

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

	if (time_after(j + IEEE80211_ROC_MIN_LEFT, cur_roc_end))
		return false;

	ieee80211_handle_roc_started(new_roc);

	new_dur = new_roc->duration - jiffies_to_msecs(cur_roc_end - j);

	/* cur_roc is long enough - add new_roc to the dependents list. */
	if (new_dur <= 0) {
		list_add_tail(&new_roc->list, &cur_roc->dependents);
		return true;
	}

	new_roc->duration = new_dur;

	/*
	 * if cur_roc was already coalesced before, we might
	 * want to extend the next roc instead of adding
	 * a new one.
	 */
	next_roc = list_entry(cur_roc->list.next,
			      struct ieee80211_roc_work, list);
	if (&next_roc->list != &local->roc_list &&
	    next_roc->chan == new_roc->chan &&
	    next_roc->sdata == new_roc->sdata &&
	    !WARN_ON(next_roc->started)) {
		list_add_tail(&new_roc->list, &next_roc->dependents);
		next_roc->duration = max(next_roc->duration,
					 new_roc->duration);
		next_roc->type = max(next_roc->type, new_roc->type);
		return true;
	}

	/* add right after cur_roc */
	list_add(&new_roc->list, &cur_roc->list);

	return true;
}

2549 2550 2551 2552 2553 2554 2555 2556 2557 2558 2559 2560 2561
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;
}

2562 2563 2564 2565
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,
2566 2567
				    struct sk_buff *txskb,
				    enum ieee80211_roc_type type)
2568 2569 2570
{
	struct ieee80211_roc_work *roc, *tmp;
	bool queued = false;
2571 2572 2573 2574
	int ret;

	lockdep_assert_held(&local->mtx);

2575 2576 2577
	if (local->use_chanctx && !local->ops->remain_on_channel)
		return -EOPNOTSUPP;

2578 2579 2580 2581
	roc = kzalloc(sizeof(*roc), GFP_KERNEL);
	if (!roc)
		return -ENOMEM;

2582 2583 2584 2585 2586 2587 2588 2589 2590 2591 2592 2593
	/*
	 * 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;

2594 2595 2596 2597
	roc->chan = channel;
	roc->duration = duration;
	roc->req_duration = duration;
	roc->frame = txskb;
2598
	roc->type = type;
2599 2600 2601 2602
	roc->sdata = sdata;
	INIT_DELAYED_WORK(&roc->work, ieee80211_sw_roc_work);
	INIT_LIST_HEAD(&roc->dependents);

2603 2604 2605 2606 2607
	/*
	 * cookie is either the roc cookie (for normal roc)
	 * or the SKB (for mgmt TX)
	 */
	if (!txskb) {
2608
		roc->cookie = ieee80211_mgmt_tx_cookie(local);
2609 2610
		*cookie = roc->cookie;
	} else {
2611
		roc->mgmt_tx_cookie = *cookie;
2612 2613
	}

2614
	/* if there's one pending or we're scanning, queue this one */
2615
	if (!list_empty(&local->roc_list) ||
2616
	    local->scanning || ieee80211_is_radar_required(local))
2617 2618 2619 2620 2621 2622 2623 2624 2625 2626
		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) */

2627
	ret = drv_remain_on_channel(local, sdata, channel, duration, type);
2628
	if (ret) {
2629 2630
		kfree(roc);
		return ret;
2631 2632
	}

2633 2634 2635 2636 2637
	roc->started = true;
	goto out_queue;

 out_check_combine:
	list_for_each_entry(tmp, &local->roc_list, list) {
2638
		if (tmp->chan != channel || tmp->sdata != sdata)
2639 2640 2641 2642 2643 2644 2645
			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.
2646 2647
		 * If the type of the new ROC has higher priority, modify the
		 * type of the previous one to match that of the new one.
2648 2649 2650 2651
		 */
		if (!tmp->started) {
			list_add_tail(&roc->list, &tmp->dependents);
			tmp->duration = max(tmp->duration, roc->duration);
2652
			tmp->type = max(tmp->type, roc->type);
2653 2654 2655 2656 2657 2658 2659 2660 2661
			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
2662
			 * when the master one begins. If it has begun,
2663 2664
			 * check that there's still a minimum time left and
			 * if so, start this one, transmitting the frame, but
2665
			 * add it to the list directly after this one with
2666 2667 2668 2669 2670 2671
			 * a reduced time so we'll ask the driver to execute
			 * it right after finishing the previous one, in the
			 * hope that it'll also be executed right afterwards,
			 * effectively extending the old one.
			 * If there's no minimum time left, just add it to the
			 * normal list.
2672 2673
			 * TODO: the ROC type is ignored here, assuming that it
			 * is better to immediately use the current ROC.
2674 2675 2676 2677 2678 2679 2680
			 */
			if (!tmp->hw_begun) {
				list_add_tail(&roc->list, &tmp->dependents);
				queued = true;
				break;
			}

2681
			if (ieee80211_coalesce_started_roc(local, roc, tmp))
2682 2683 2684 2685 2686 2687 2688 2689 2690 2691 2692 2693 2694 2695 2696 2697 2698 2699 2700 2701 2702 2703 2704 2705 2706 2707 2708 2709 2710 2711 2712 2713 2714
				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;
2715 2716
}

2717
static int ieee80211_remain_on_channel(struct wiphy *wiphy,
2718
				       struct wireless_dev *wdev,
2719 2720 2721 2722
				       struct ieee80211_channel *chan,
				       unsigned int duration,
				       u64 *cookie)
{
2723
	struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
2724
	struct ieee80211_local *local = sdata->local;
2725
	int ret;
2726

2727
	mutex_lock(&local->mtx);
2728
	ret = ieee80211_start_roc_work(local, sdata, chan,
2729 2730
				       duration, cookie, NULL,
				       IEEE80211_ROC_TYPE_NORMAL);
2731
	mutex_unlock(&local->mtx);
2732

2733
	return ret;
2734 2735
}

2736 2737
static int ieee80211_cancel_roc(struct ieee80211_local *local,
				u64 cookie, bool mgmt_tx)
2738
{
2739
	struct ieee80211_roc_work *roc, *tmp, *found = NULL;
2740 2741
	int ret;

2742 2743
	mutex_lock(&local->mtx);
	list_for_each_entry_safe(roc, tmp, &local->roc_list, list) {
2744 2745 2746
		struct ieee80211_roc_work *dep, *tmp2;

		list_for_each_entry_safe(dep, tmp2, &roc->dependents, list) {
2747
			if (!mgmt_tx && dep->cookie != cookie)
2748 2749 2750 2751 2752 2753 2754
				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);

2755
			ieee80211_roc_notify_destroy(dep, true);
2756 2757 2758
			return 0;
		}

2759
		if (!mgmt_tx && roc->cookie != cookie)
2760 2761 2762
			continue;
		else if (mgmt_tx && roc->mgmt_tx_cookie != cookie)
			continue;
2763

2764 2765 2766
		found = roc;
		break;
	}
2767

2768 2769 2770 2771
	if (!found) {
		mutex_unlock(&local->mtx);
		return -ENOENT;
	}
2772

2773 2774 2775 2776 2777 2778 2779
	/*
	 * 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.
	 */

2780 2781 2782 2783 2784 2785 2786 2787
	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;
			}
		}
2788

2789
		list_del(&found->list);
2790

2791 2792
		if (found->started)
			ieee80211_start_next_roc(local);
2793
		mutex_unlock(&local->mtx);
2794

2795
		ieee80211_roc_notify_destroy(found, true);
2796 2797 2798 2799
	} else {
		/* work may be pending so use it all the time */
		found->abort = true;
		ieee80211_queue_delayed_work(&local->hw, &found->work, 0);
2800 2801 2802

		mutex_unlock(&local->mtx);

2803 2804
		/* work will clean up etc */
		flush_delayed_work(&found->work);
2805 2806
		WARN_ON(!found->to_be_freed);
		kfree(found);
2807
	}
2808

2809
	return 0;
2810 2811
}

2812
static int ieee80211_cancel_remain_on_channel(struct wiphy *wiphy,
2813
					      struct wireless_dev *wdev,
2814
					      u64 cookie)
2815
{
2816
	struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
2817
	struct ieee80211_local *local = sdata->local;
2818

2819
	return ieee80211_cancel_roc(local, cookie, false);
2820 2821
}

2822 2823
static int ieee80211_start_radar_detection(struct wiphy *wiphy,
					   struct net_device *dev,
2824 2825
					   struct cfg80211_chan_def *chandef,
					   u32 cac_time_ms)
2826 2827 2828 2829 2830
{
	struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
	struct ieee80211_local *local = sdata->local;
	int err;

2831 2832 2833 2834 2835
	mutex_lock(&local->mtx);
	if (!list_empty(&local->roc_list) || local->scanning) {
		err = -EBUSY;
		goto out_unlock;
	}
2836 2837 2838 2839 2840 2841 2842 2843

	/* 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)
2844
		goto out_unlock;
2845 2846

	ieee80211_queue_delayed_work(&sdata->local->hw,
2847 2848
				     &sdata->dfs_cac_timer_work,
				     msecs_to_jiffies(cac_time_ms));
2849

2850 2851 2852
 out_unlock:
	mutex_unlock(&local->mtx);
	return err;
2853 2854
}

2855 2856 2857 2858 2859 2860 2861 2862 2863 2864 2865 2866 2867 2868 2869 2870 2871 2872 2873 2874 2875 2876 2877 2878 2879 2880 2881 2882 2883 2884 2885 2886 2887 2888 2889 2890 2891 2892 2893 2894 2895 2896 2897 2898 2899 2900 2901 2902 2903 2904 2905 2906 2907 2908 2909 2910
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;
}

2911
void ieee80211_csa_finish(struct ieee80211_vif *vif)
2912
{
2913
	struct ieee80211_sub_if_data *sdata = vif_to_sdata(vif);
2914

2915 2916 2917 2918
	ieee80211_queue_work(&sdata->local->hw,
			     &sdata->csa_finalize_work);
}
EXPORT_SYMBOL(ieee80211_csa_finish);
2919

2920 2921
static int ieee80211_set_after_csa_beacon(struct ieee80211_sub_if_data *sdata,
					  u32 *changed)
2922
{
2923
	int err;
2924

2925 2926
	switch (sdata->vif.type) {
	case NL80211_IFTYPE_AP:
2927 2928
		err = ieee80211_assign_beacon(sdata, sdata->u.ap.next_beacon,
					      NULL);
2929 2930 2931
		kfree(sdata->u.ap.next_beacon);
		sdata->u.ap.next_beacon = NULL;

2932
		if (err < 0)
2933 2934
			return err;
		*changed |= err;
2935 2936
		break;
	case NL80211_IFTYPE_ADHOC:
2937 2938
		err = ieee80211_ibss_finish_csa(sdata);
		if (err < 0)
2939 2940
			return err;
		*changed |= err;
2941
		break;
2942 2943 2944 2945
#ifdef CONFIG_MAC80211_MESH
	case NL80211_IFTYPE_MESH_POINT:
		err = ieee80211_mesh_finish_csa(sdata);
		if (err < 0)
2946 2947
			return err;
		*changed |= err;
2948 2949
		break;
#endif
2950 2951
	default:
		WARN_ON(1);
2952 2953 2954 2955 2956 2957
		return -EINVAL;
	}

	return 0;
}

2958
static int __ieee80211_csa_finalize(struct ieee80211_sub_if_data *sdata)
2959 2960 2961 2962 2963 2964 2965
{
	struct ieee80211_local *local = sdata->local;
	u32 changed = 0;
	int err;

	sdata_assert_lock(sdata);
	lockdep_assert_held(&local->mtx);
2966
	lockdep_assert_held(&local->chanctx_mtx);
2967

2968 2969 2970 2971 2972 2973
	/*
	 * 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
	 */
2974

2975 2976 2977 2978 2979 2980 2981 2982 2983
	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;

2984
		return ieee80211_vif_use_reserved_context(sdata);
2985
	}
2986

2987 2988 2989 2990
	if (!cfg80211_chandef_identical(&sdata->vif.bss_conf.chandef,
					&sdata->csa_chandef))
		return -EINVAL;

2991 2992 2993 2994
	sdata->vif.csa_active = false;

	err = ieee80211_set_after_csa_beacon(sdata, &changed);
	if (err)
2995
		return err;
2996

2997
	ieee80211_bss_info_change_notify(sdata, changed);
2998

2999 3000 3001 3002 3003
	if (sdata->csa_block_tx) {
		ieee80211_wake_vif_queues(local, sdata,
					  IEEE80211_QUEUE_STOP_REASON_CSA);
		sdata->csa_block_tx = false;
	}
3004

3005 3006 3007 3008 3009 3010
	err = drv_post_channel_switch(sdata);
	if (err)
		return err;

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

3011 3012 3013 3014 3015 3016 3017 3018 3019 3020
	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);
	}
3021 3022 3023 3024 3025 3026 3027
}

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);
3028
	struct ieee80211_local *local = sdata->local;
3029 3030

	sdata_lock(sdata);
3031
	mutex_lock(&local->mtx);
3032
	mutex_lock(&local->chanctx_mtx);
3033

3034 3035 3036 3037 3038 3039 3040 3041
	/* 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);
3042 3043

unlock:
3044
	mutex_unlock(&local->chanctx_mtx);
3045
	mutex_unlock(&local->mtx);
3046
	sdata_unlock(sdata);
3047 3048
}

3049 3050 3051
static int ieee80211_set_csa_beacon(struct ieee80211_sub_if_data *sdata,
				    struct cfg80211_csa_settings *params,
				    u32 *changed)
3052
{
3053
	struct ieee80211_csa_settings csa = {};
3054
	int err;
3055 3056 3057

	switch (sdata->vif.type) {
	case NL80211_IFTYPE_AP:
3058 3059 3060 3061 3062
		sdata->u.ap.next_beacon =
			cfg80211_beacon_dup(&params->beacon_after);
		if (!sdata->u.ap.next_beacon)
			return -ENOMEM;

3063 3064 3065 3066 3067 3068 3069 3070 3071 3072 3073 3074 3075 3076 3077 3078 3079 3080 3081
		/*
		 * 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;

3082 3083 3084 3085 3086
		if ((params->n_counter_offsets_beacon >
		     IEEE80211_MAX_CSA_COUNTERS_NUM) ||
		    (params->n_counter_offsets_presp >
		     IEEE80211_MAX_CSA_COUNTERS_NUM))
			return -EINVAL;
3087

3088 3089 3090 3091 3092
		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;
3093

3094
		err = ieee80211_assign_beacon(sdata, &params->beacon_csa, &csa);
3095 3096 3097 3098
		if (err < 0) {
			kfree(sdata->u.ap.next_beacon);
			return err;
		}
3099
		*changed |= err;
3100

3101 3102 3103 3104 3105 3106 3107 3108 3109 3110 3111 3112 3113 3114 3115 3116 3117 3118 3119 3120 3121 3122 3123 3124 3125 3126 3127
		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;

3128 3129 3130 3131 3132
		/* see comments in the NL80211_IFTYPE_AP block */
		if (params->count > 1) {
			err = ieee80211_ibss_csa_beacon(sdata, params);
			if (err < 0)
				return err;
3133
			*changed |= err;
3134 3135 3136 3137
		}

		ieee80211_send_action_csa(sdata, params);

3138
		break;
3139
#ifdef CONFIG_MAC80211_MESH
3140 3141
	case NL80211_IFTYPE_MESH_POINT: {
		struct ieee80211_if_mesh *ifmsh = &sdata->u.mesh;
3142 3143 3144 3145 3146 3147 3148 3149 3150

		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;

3151
		if (ifmsh->csa_role == IEEE80211_MESH_CSA_ROLE_NONE) {
3152
			ifmsh->csa_role = IEEE80211_MESH_CSA_ROLE_INIT;
3153 3154 3155 3156 3157
			if (!ifmsh->pre_value)
				ifmsh->pre_value = 1;
			else
				ifmsh->pre_value++;
		}
3158

3159 3160 3161 3162 3163 3164 3165
		/* 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;
			}
3166
			*changed |= err;
3167
		}
3168 3169 3170 3171

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

3172
		break;
3173
		}
3174
#endif
3175 3176 3177 3178
	default:
		return -EOPNOTSUPP;
	}

3179 3180 3181
	return 0;
}

3182 3183 3184
static int
__ieee80211_channel_switch(struct wiphy *wiphy, struct net_device *dev,
			   struct cfg80211_csa_settings *params)
3185 3186 3187
{
	struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
	struct ieee80211_local *local = sdata->local;
3188
	struct ieee80211_channel_switch ch_switch;
3189
	struct ieee80211_chanctx_conf *conf;
3190
	struct ieee80211_chanctx *chanctx;
3191 3192
	u32 changed = 0;
	int err;
3193 3194

	sdata_assert_lock(sdata);
3195
	lockdep_assert_held(&local->mtx);
3196 3197 3198 3199 3200 3201 3202 3203 3204 3205 3206

	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;

3207 3208 3209 3210
	/* don't allow another channel switch if one is already active. */
	if (sdata->vif.csa_active)
		return -EBUSY;

3211 3212 3213 3214
	mutex_lock(&local->chanctx_mtx);
	conf = rcu_dereference_protected(sdata->vif.chanctx_conf,
					 lockdep_is_held(&local->chanctx_mtx));
	if (!conf) {
3215 3216
		err = -EBUSY;
		goto out;
3217 3218
	}

3219
	chanctx = container_of(conf, struct ieee80211_chanctx, conf);
3220 3221 3222
	if (!chanctx) {
		err = -EBUSY;
		goto out;
3223 3224
	}

3225 3226 3227 3228 3229 3230
	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;

3231 3232 3233 3234
	err = drv_pre_channel_switch(sdata, &ch_switch);
	if (err)
		goto out;

3235 3236 3237 3238 3239
	err = ieee80211_vif_reserve_chanctx(sdata, &params->chandef,
					    chanctx->mode,
					    params->radar_required);
	if (err)
		goto out;
3240

3241 3242 3243 3244 3245 3246
	/* 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;
	}
3247 3248

	err = ieee80211_set_csa_beacon(sdata, params, &changed);
3249 3250 3251 3252
	if (err) {
		ieee80211_vif_unreserve_chanctx(sdata);
		goto out;
	}
3253

3254
	sdata->csa_chandef = params->chandef;
3255
	sdata->csa_block_tx = params->block_tx;
3256 3257
	sdata->vif.csa_active = true;

3258
	if (sdata->csa_block_tx)
3259 3260
		ieee80211_stop_vif_queues(local, sdata,
					  IEEE80211_QUEUE_STOP_REASON_CSA);
3261

3262 3263 3264
	cfg80211_ch_switch_started_notify(sdata->dev, &sdata->csa_chandef,
					  params->count);

3265 3266 3267 3268 3269 3270 3271
	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);
	}
3272

3273 3274 3275
out:
	mutex_unlock(&local->chanctx_mtx);
	return err;
3276 3277
}

3278 3279 3280 3281 3282 3283 3284 3285 3286 3287 3288 3289 3290 3291
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;
}

3292 3293 3294 3295 3296 3297 3298 3299 3300 3301 3302 3303 3304 3305 3306 3307 3308 3309 3310 3311 3312 3313 3314 3315 3316 3317 3318 3319 3320 3321
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;
}

3322
static int ieee80211_mgmt_tx(struct wiphy *wiphy, struct wireless_dev *wdev,
3323 3324
			     struct cfg80211_mgmt_tx_params *params,
			     u64 *cookie)
3325
{
3326
	struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
3327
	struct ieee80211_local *local = sdata->local;
3328
	struct sk_buff *skb, *ack_skb;
3329
	struct sta_info *sta;
3330
	const struct ieee80211_mgmt *mgmt = (void *)params->buf;
3331
	bool need_offchan = false;
3332
	u32 flags;
3333
	int ret;
3334
	u8 *data;
3335

3336
	if (params->dont_wait_for_ack)
3337 3338 3339 3340 3341
		flags = IEEE80211_TX_CTL_NO_ACK;
	else
		flags = IEEE80211_TX_INTFL_NL80211_FRAME_TX |
			IEEE80211_TX_CTL_REQ_TX_STATUS;

3342
	if (params->no_cck)
3343 3344
		flags |= IEEE80211_TX_CTL_NO_CCK_RATE;

3345 3346
	switch (sdata->vif.type) {
	case NL80211_IFTYPE_ADHOC:
3347 3348 3349 3350 3351 3352 3353 3354 3355 3356
		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
3357 3358 3359
	case NL80211_IFTYPE_AP:
	case NL80211_IFTYPE_AP_VLAN:
	case NL80211_IFTYPE_P2P_GO:
3360 3361 3362 3363
		if (sdata->vif.type != NL80211_IFTYPE_ADHOC &&
		    !ieee80211_vif_is_mesh(&sdata->vif) &&
		    !rcu_access_pointer(sdata->bss->beacon))
			need_offchan = true;
3364
		if (!ieee80211_is_action(mgmt->frame_control) ||
3365
		    mgmt->u.action.category == WLAN_CATEGORY_PUBLIC ||
3366 3367
		    mgmt->u.action.category == WLAN_CATEGORY_SELF_PROTECTED ||
		    mgmt->u.action.category == WLAN_CATEGORY_SPECTRUM_MGMT)
3368 3369 3370 3371 3372 3373 3374 3375
			break;
		rcu_read_lock();
		sta = sta_info_get(sdata, mgmt->da);
		rcu_read_unlock();
		if (!sta)
			return -ENOLINK;
		break;
	case NL80211_IFTYPE_STATION:
3376
	case NL80211_IFTYPE_P2P_CLIENT:
3377 3378 3379 3380 3381 3382
		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)))
3383
			need_offchan = true;
3384
		sdata_unlock(sdata);
3385
		break;
3386 3387 3388
	case NL80211_IFTYPE_P2P_DEVICE:
		need_offchan = true;
		break;
3389 3390 3391 3392
	default:
		return -EOPNOTSUPP;
	}

3393 3394 3395
	/* configurations requiring offchan cannot work if no channel has been
	 * specified
	 */
3396
	if (need_offchan && !params->chan)
3397 3398
		return -EINVAL;

3399 3400 3401 3402
	mutex_lock(&local->mtx);

	/* Check if the operating channel is the requested channel */
	if (!need_offchan) {
J
Johannes Berg 已提交
3403 3404 3405 3406 3407
		struct ieee80211_chanctx_conf *chanctx_conf;

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

3408
		if (chanctx_conf) {
3409 3410 3411 3412
			need_offchan = params->chan &&
				       (params->chan !=
					chanctx_conf->def.chan);
		} else if (!params->chan) {
3413 3414 3415 3416
			ret = -EINVAL;
			rcu_read_unlock();
			goto out_unlock;
		} else {
3417
			need_offchan = true;
3418
		}
J
Johannes Berg 已提交
3419
		rcu_read_unlock();
3420 3421
	}

3422
	if (need_offchan && !params->offchan) {
3423 3424 3425 3426
		ret = -EBUSY;
		goto out_unlock;
	}

3427
	skb = dev_alloc_skb(local->hw.extra_tx_headroom + params->len);
3428 3429 3430 3431
	if (!skb) {
		ret = -ENOMEM;
		goto out_unlock;
	}
3432 3433
	skb_reserve(skb, local->hw.extra_tx_headroom);

3434 3435 3436 3437 3438 3439 3440 3441 3442
	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 ||
	     sdata->vif.type == NL80211_IFTYPE_ADHOC) &&
	    params->n_csa_offsets) {
		int i;
3443
		struct beacon_data *beacon = NULL;
3444

3445 3446 3447 3448 3449 3450 3451 3452 3453 3454 3455 3456 3457 3458 3459
		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();
3460
	}
3461 3462 3463 3464 3465

	IEEE80211_SKB_CB(skb)->flags = flags;

	skb->dev = sdata->dev;

3466
	if (!params->dont_wait_for_ack) {
3467
		/* make a copy to preserve the frame contents
3468 3469
		 * in case of encryption.
		 */
3470 3471 3472 3473
		ack_skb = ieee80211_make_ack_skb(local, skb, cookie,
						 GFP_KERNEL);
		if (IS_ERR(ack_skb)) {
			ret = PTR_ERR(ack_skb);
3474 3475 3476 3477 3478 3479 3480 3481
			kfree_skb(skb);
			goto out_unlock;
		}
	} else {
		/* for cookie below */
		ack_skb = skb;
	}

3482
	if (!need_offchan) {
3483
		ieee80211_tx_skb(sdata, skb);
3484 3485
		ret = 0;
		goto out_unlock;
3486 3487
	}

3488 3489
	IEEE80211_SKB_CB(skb)->flags |= IEEE80211_TX_CTL_TX_OFFCHAN |
					IEEE80211_TX_INTFL_OFFCHAN_TX_OK;
3490 3491 3492
	if (local->hw.flags & IEEE80211_HW_QUEUE_CONTROL)
		IEEE80211_SKB_CB(skb)->hw_queue =
			local->hw.offchannel_tx_hw_queue;
3493

3494
	/* This will handle all kinds of coalescing and immediate TX */
3495 3496
	ret = ieee80211_start_roc_work(local, sdata, params->chan,
				       params->wait, cookie, skb,
3497
				       IEEE80211_ROC_TYPE_MGMT_TX);
3498 3499 3500 3501 3502
	if (ret)
		kfree_skb(skb);
 out_unlock:
	mutex_unlock(&local->mtx);
	return ret;
3503 3504
}

3505
static int ieee80211_mgmt_tx_cancel_wait(struct wiphy *wiphy,
3506
					 struct wireless_dev *wdev,
3507 3508
					 u64 cookie)
{
3509
	struct ieee80211_local *local = wiphy_priv(wiphy);
3510

3511
	return ieee80211_cancel_roc(local, cookie, true);
3512 3513
}

3514
static void ieee80211_mgmt_frame_register(struct wiphy *wiphy,
3515
					  struct wireless_dev *wdev,
3516 3517 3518 3519
					  u16 frame_type, bool reg)
{
	struct ieee80211_local *local = wiphy_priv(wiphy);

3520 3521 3522 3523 3524 3525
	switch (frame_type) {
	case IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_PROBE_REQ:
		if (reg)
			local->probe_req_reg++;
		else
			local->probe_req_reg--;
3526

3527 3528 3529
		if (!local->open_count)
			break;

3530 3531 3532 3533 3534
		ieee80211_queue_work(&local->hw, &local->reconfig_filter);
		break;
	default:
		break;
	}
3535 3536
}

3537 3538 3539 3540 3541 3542 3543 3544 3545 3546 3547 3548 3549 3550 3551 3552 3553
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);
}

3554 3555 3556 3557 3558 3559 3560 3561 3562 3563 3564 3565 3566 3567 3568
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
3569 3570 3571 3572 3573 3574
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;
3575
	struct sk_buff *skb, *ack_skb;
J
Johannes Berg 已提交
3576 3577 3578 3579 3580
	int size = sizeof(*nullfunc);
	__le16 fc;
	bool qos;
	struct ieee80211_tx_info *info;
	struct sta_info *sta;
J
Johannes Berg 已提交
3581 3582
	struct ieee80211_chanctx_conf *chanctx_conf;
	enum ieee80211_band band;
3583 3584 3585 3586
	int ret;

	/* the lock is needed to assign the cookie later */
	mutex_lock(&local->mtx);
J
Johannes Berg 已提交
3587 3588

	rcu_read_lock();
J
Johannes Berg 已提交
3589 3590
	chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf);
	if (WARN_ON(!chanctx_conf)) {
3591 3592
		ret = -EINVAL;
		goto unlock;
J
Johannes Berg 已提交
3593
	}
3594
	band = chanctx_conf->def.chan->band;
3595
	sta = sta_info_get_bss(sdata, peer);
3596
	if (sta) {
3597
		qos = sta->sta.wme;
3598
	} else {
3599 3600
		ret = -ENOLINK;
		goto unlock;
3601
	}
J
Johannes Berg 已提交
3602 3603 3604 3605 3606 3607 3608 3609 3610 3611 3612 3613 3614

	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
3615
	if (!skb) {
3616 3617
		ret = -ENOMEM;
		goto unlock;
J
Johannes Berg 已提交
3618
	}
J
Johannes Berg 已提交
3619 3620 3621 3622 3623 3624 3625 3626 3627 3628 3629 3630 3631 3632 3633 3634 3635

	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;
3636
	info->band = band;
J
Johannes Berg 已提交
3637 3638 3639 3640 3641 3642

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

3643 3644 3645 3646 3647 3648 3649
	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
3650
	local_bh_disable();
3651
	ieee80211_xmit(sdata, sta, skb);
J
Johannes Berg 已提交
3652
	local_bh_enable();
3653 3654 3655

	ret = 0;
unlock:
J
Johannes Berg 已提交
3656
	rcu_read_unlock();
3657
	mutex_unlock(&local->mtx);
J
Johannes Berg 已提交
3658

3659
	return ret;
J
Johannes Berg 已提交
3660 3661
}

3662 3663 3664
static int ieee80211_cfg_get_channel(struct wiphy *wiphy,
				     struct wireless_dev *wdev,
				     struct cfg80211_chan_def *chandef)
3665
{
J
Johannes Berg 已提交
3666
	struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
3667
	struct ieee80211_local *local = wiphy_priv(wiphy);
J
Johannes Berg 已提交
3668
	struct ieee80211_chanctx_conf *chanctx_conf;
3669
	int ret = -ENODATA;
J
Johannes Berg 已提交
3670 3671

	rcu_read_lock();
3672 3673
	chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf);
	if (chanctx_conf) {
3674
		*chandef = sdata->vif.bss_conf.chandef;
3675 3676 3677 3678 3679 3680 3681
		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
3682
			*chandef = local->_oper_chandef;
3683
		ret = 0;
J
Johannes Berg 已提交
3684 3685
	}
	rcu_read_unlock();
3686

3687
	return ret;
3688 3689
}

3690 3691 3692 3693 3694 3695 3696
#ifdef CONFIG_PM
static void ieee80211_set_wakeup(struct wiphy *wiphy, bool enabled)
{
	drv_set_wakeup(wiphy_priv(wiphy), enabled);
}
#endif

3697 3698 3699 3700 3701 3702 3703 3704 3705 3706 3707 3708 3709 3710 3711 3712 3713
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;
	}

3714
	old_qos_map = sdata_dereference(sdata->qos_map, sdata);
3715 3716 3717 3718 3719 3720 3721
	rcu_assign_pointer(sdata->qos_map, new_qos_map);
	if (old_qos_map)
		kfree_rcu(old_qos_map, rcu_head);

	return 0;
}

3722 3723 3724 3725 3726 3727 3728 3729 3730 3731 3732 3733 3734 3735 3736
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;
}

3737 3738 3739 3740 3741 3742 3743 3744 3745 3746 3747 3748 3749 3750 3751 3752 3753 3754 3755 3756 3757 3758 3759 3760 3761 3762 3763 3764 3765 3766 3767 3768 3769 3770 3771 3772 3773 3774 3775 3776 3777 3778 3779 3780 3781 3782 3783 3784 3785 3786 3787 3788
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();
3789
		ieee80211_flush_queues(local, sdata, false);
3790 3791 3792 3793 3794 3795 3796 3797 3798 3799 3800 3801 3802 3803 3804 3805 3806

		/* 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;
}

3807
const struct cfg80211_ops mac80211_config_ops = {
3808 3809
	.add_virtual_intf = ieee80211_add_iface,
	.del_virtual_intf = ieee80211_del_iface,
3810
	.change_virtual_intf = ieee80211_change_iface,
3811 3812
	.start_p2p_device = ieee80211_start_p2p_device,
	.stop_p2p_device = ieee80211_stop_p2p_device,
3813 3814
	.add_key = ieee80211_add_key,
	.del_key = ieee80211_del_key,
3815
	.get_key = ieee80211_get_key,
3816
	.set_default_key = ieee80211_config_default_key,
3817
	.set_default_mgmt_key = ieee80211_config_default_mgmt_key,
3818 3819 3820
	.start_ap = ieee80211_start_ap,
	.change_beacon = ieee80211_change_beacon,
	.stop_ap = ieee80211_stop_ap,
3821 3822 3823
	.add_station = ieee80211_add_station,
	.del_station = ieee80211_del_station,
	.change_station = ieee80211_change_station,
3824
	.get_station = ieee80211_get_station,
3825
	.dump_station = ieee80211_dump_station,
3826
	.dump_survey = ieee80211_dump_survey,
3827 3828 3829 3830 3831 3832
#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,
3833 3834
	.get_mpp = ieee80211_get_mpp,
	.dump_mpp = ieee80211_dump_mpp,
3835 3836
	.update_mesh_config = ieee80211_update_mesh_config,
	.get_mesh_config = ieee80211_get_mesh_config,
3837 3838
	.join_mesh = ieee80211_join_mesh,
	.leave_mesh = ieee80211_leave_mesh,
3839
#endif
3840 3841
	.join_ocb = ieee80211_join_ocb,
	.leave_ocb = ieee80211_leave_ocb,
3842
	.change_bss = ieee80211_change_bss,
3843
	.set_txq_params = ieee80211_set_txq_params,
3844
	.set_monitor_channel = ieee80211_set_monitor_channel,
3845 3846
	.suspend = ieee80211_suspend,
	.resume = ieee80211_resume,
3847
	.scan = ieee80211_scan,
3848 3849
	.sched_scan_start = ieee80211_sched_scan_start,
	.sched_scan_stop = ieee80211_sched_scan_stop,
3850 3851 3852 3853
	.auth = ieee80211_auth,
	.assoc = ieee80211_assoc,
	.deauth = ieee80211_deauth,
	.disassoc = ieee80211_disassoc,
3854 3855
	.join_ibss = ieee80211_join_ibss,
	.leave_ibss = ieee80211_leave_ibss,
3856
	.set_mcast_rate = ieee80211_set_mcast_rate,
3857
	.set_wiphy_params = ieee80211_set_wiphy_params,
3858 3859
	.set_tx_power = ieee80211_set_tx_power,
	.get_tx_power = ieee80211_get_tx_power,
J
Johannes Berg 已提交
3860
	.set_wds_peer = ieee80211_set_wds_peer,
J
Johannes Berg 已提交
3861
	.rfkill_poll = ieee80211_rfkill_poll,
3862
	CFG80211_TESTMODE_CMD(ieee80211_testmode_cmd)
W
Wey-Yi Guy 已提交
3863
	CFG80211_TESTMODE_DUMP(ieee80211_testmode_dump)
J
Johannes Berg 已提交
3864
	.set_power_mgmt = ieee80211_set_power_mgmt,
J
Johannes Berg 已提交
3865
	.set_bitrate_mask = ieee80211_set_bitrate_mask,
3866 3867
	.remain_on_channel = ieee80211_remain_on_channel,
	.cancel_remain_on_channel = ieee80211_cancel_remain_on_channel,
3868
	.mgmt_tx = ieee80211_mgmt_tx,
3869
	.mgmt_tx_cancel_wait = ieee80211_mgmt_tx_cancel_wait,
3870
	.set_cqm_rssi_config = ieee80211_set_cqm_rssi_config,
3871
	.mgmt_frame_register = ieee80211_mgmt_frame_register,
3872 3873
	.set_antenna = ieee80211_set_antenna,
	.get_antenna = ieee80211_get_antenna,
3874
	.set_rekey_data = ieee80211_set_rekey_data,
3875 3876
	.tdls_oper = ieee80211_tdls_oper,
	.tdls_mgmt = ieee80211_tdls_mgmt,
3877 3878
	.tdls_channel_switch = ieee80211_tdls_channel_switch,
	.tdls_cancel_channel_switch = ieee80211_tdls_cancel_channel_switch,
J
Johannes Berg 已提交
3879
	.probe_client = ieee80211_probe_client,
3880
	.set_noack_map = ieee80211_set_noack_map,
3881 3882 3883
#ifdef CONFIG_PM
	.set_wakeup = ieee80211_set_wakeup,
#endif
3884
	.get_channel = ieee80211_cfg_get_channel,
3885
	.start_radar_detection = ieee80211_start_radar_detection,
3886
	.channel_switch = ieee80211_channel_switch,
3887
	.set_qos_map = ieee80211_set_qos_map,
3888
	.set_ap_chanwidth = ieee80211_set_ap_chanwidth,
3889 3890
	.add_tx_ts = ieee80211_add_tx_ts,
	.del_tx_ts = ieee80211_del_tx_ts,
3891
};