cfg.c 101.6 KB
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/*
 * mac80211 configuration hooks for cfg80211
 *
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 * Copyright 2006-2010	Johannes Berg <johannes@sipsolutions.net>
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 * Copyright 2013-2014  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)
50
{
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	ieee80211_if_remove(IEEE80211_WDEV_TO_SUB_IF(wdev));
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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;
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64
	ret = ieee80211_if_change_type(sdata, type);
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	if (ret)
		return ret;
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	if (type == NL80211_IFTYPE_AP_VLAN &&
	    params && params->use_4addr == 0)
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		RCU_INIT_POINTER(sdata->u.vlan.sta, NULL);
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	else if (type == NL80211_IFTYPE_STATION &&
		 params && params->use_4addr >= 0)
		sdata->u.mgd.use_4addr = params->use_4addr;

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

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

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

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

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

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

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

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	return ieee80211_do_open(wdev, true);
}

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

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

	sdata->noack_map = noack_map;
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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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		if (key->flags & KEY_FLAG_UPLOADED_TO_HARDWARE &&
		    !(key->conf.flags & IEEE80211_KEY_FLAG_GENERATE_IV)) {
			drv_get_key_seq(sdata->local, key, &kseq);
			memcpy(seq, kseq.ccmp.pn, 6);
		} else {
			pn64 = atomic64_read(&key->u.ccmp.tx_pn);
			seq[0] = pn64;
			seq[1] = pn64 >> 8;
			seq[2] = pn64 >> 16;
			seq[3] = pn64 >> 24;
			seq[4] = pn64 >> 32;
			seq[5] = pn64 >> 40;
		}
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		params.seq = seq;
		params.seq_len = 6;
		break;
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	case WLAN_CIPHER_SUITE_AES_CMAC:
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	case WLAN_CIPHER_SUITE_BIP_CMAC_256:
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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);
			memcpy(seq, kseq.aes_cmac.pn, 6);
		} else {
			pn64 = atomic64_read(&key->u.aes_cmac.tx_pn);
			seq[0] = pn64;
			seq[1] = pn64 >> 8;
			seq[2] = pn64 >> 16;
			seq[3] = pn64 >> 24;
			seq[4] = pn64 >> 32;
			seq[5] = pn64 >> 40;
		}
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		params.seq = seq;
		params.seq_len = 6;
		break;
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	case WLAN_CIPHER_SUITE_BIP_GMAC_128:
	case WLAN_CIPHER_SUITE_BIP_GMAC_256:
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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);
			memcpy(seq, kseq.aes_gmac.pn, 6);
		} else {
			pn64 = atomic64_read(&key->u.aes_gmac.tx_pn);
			seq[0] = pn64;
			seq[1] = pn64 >> 8;
			seq[2] = pn64 >> 16;
			seq[3] = pn64 >> 24;
			seq[4] = pn64 >> 32;
			seq[5] = pn64 >> 40;
		}
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		params.seq = seq;
		params.seq_len = 6;
		break;
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	case WLAN_CIPHER_SUITE_GCMP:
	case WLAN_CIPHER_SUITE_GCMP_256:
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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);
			memcpy(seq, kseq.gcmp.pn, 6);
		} else {
			pn64 = atomic64_read(&key->u.gcmp.tx_pn);
			seq[0] = pn64;
			seq[1] = pn64 >> 8;
			seq[2] = pn64 >> 16;
			seq[3] = pn64 >> 24;
			seq[4] = pn64 >> 32;
			seq[5] = pn64 >> 40;
		}
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		params.seq = seq;
		params.seq_len = 6;
		break;
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	}

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

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

 out:
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	rcu_read_unlock();
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	return err;
}

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static int ieee80211_config_default_key(struct wiphy *wiphy,
					struct net_device *dev,
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					u8 key_idx, bool uni,
					bool multi)
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{
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	struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
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	ieee80211_set_default_key(sdata, key_idx, uni, multi);
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	return 0;
}

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

	return 0;
}

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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);
491
	}
492
	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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}

543
static int ieee80211_dump_station(struct wiphy *wiphy, struct net_device *dev,
544
				  int idx, u8 *mac, struct station_info *sinfo)
545
{
546
	struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
547
	struct ieee80211_local *local = sdata->local;
548
	struct sta_info *sta;
549 550
	int ret = -ENOENT;

551
	mutex_lock(&local->sta_mtx);
552

553
	sta = sta_info_get_by_idx(sdata, idx);
554 555
	if (sta) {
		ret = 0;
556
		memcpy(mac, sta->sta.addr, ETH_ALEN);
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		sta_set_sinfo(sta, sinfo);
	}
559

560
	mutex_unlock(&local->sta_mtx);
561

562
	return ret;
563 564
}

565 566 567 568 569 570 571 572
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);
}

573
static int ieee80211_get_station(struct wiphy *wiphy, struct net_device *dev,
574
				 const u8 *mac, struct station_info *sinfo)
575
{
576
	struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
577
	struct ieee80211_local *local = sdata->local;
578
	struct sta_info *sta;
579
	int ret = -ENOENT;
580

581
	mutex_lock(&local->sta_mtx);
582

583
	sta = sta_info_get_bss(sdata, mac);
584 585 586 587 588
	if (sta) {
		ret = 0;
		sta_set_sinfo(sta, sinfo);
	}

589
	mutex_unlock(&local->sta_mtx);
590 591

	return ret;
592 593
}

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Johannes Berg 已提交
594
static int ieee80211_set_monitor_channel(struct wiphy *wiphy,
595
					 struct cfg80211_chan_def *chandef)
596 597
{
	struct ieee80211_local *local = wiphy_priv(wiphy);
J
Johannes Berg 已提交
598 599
	struct ieee80211_sub_if_data *sdata;
	int ret = 0;
600

601
	if (cfg80211_chandef_identical(&local->monitor_chandef, chandef))
J
Johannes Berg 已提交
602
		return 0;
603

604
	mutex_lock(&local->mtx);
J
Johannes Berg 已提交
605 606 607 608 609 610 611
	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);
612
			ret = ieee80211_vif_use_channel(sdata, chandef,
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Johannes Berg 已提交
613 614 615
					IEEE80211_CHANCTX_EXCLUSIVE);
		}
	} else if (local->open_count == local->monitors) {
616
		local->_oper_chandef = *chandef;
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Johannes Berg 已提交
617 618
		ieee80211_hw_config(local, 0);
	}
619

620 621
	if (ret == 0)
		local->monitor_chandef = *chandef;
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Johannes Berg 已提交
622
	mutex_unlock(&local->iflist_mtx);
623
	mutex_unlock(&local->mtx);
624

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Johannes Berg 已提交
625
	return ret;
626 627
}

628
static int ieee80211_set_probe_resp(struct ieee80211_sub_if_data *sdata,
629 630
				    const u8 *resp, size_t resp_len,
				    const struct ieee80211_csa_settings *csa)
631
{
632
	struct probe_resp *new, *old;
633 634

	if (!resp || !resp_len)
635
		return 1;
636

637
	old = sdata_dereference(sdata->u.ap.probe_resp, sdata);
638

639
	new = kzalloc(sizeof(struct probe_resp) + resp_len, GFP_KERNEL);
640 641 642
	if (!new)
		return -ENOMEM;

643 644
	new->len = resp_len;
	memcpy(new->data, resp, resp_len);
645

646 647 648 649 650
	if (csa)
		memcpy(new->csa_counter_offsets, csa->counter_offsets_presp,
		       csa->n_counter_offsets_presp *
		       sizeof(new->csa_counter_offsets[0]));

651
	rcu_assign_pointer(sdata->u.ap.probe_resp, new);
652 653
	if (old)
		kfree_rcu(old, rcu_head);
654 655 656 657

	return 0;
}

658
static int ieee80211_assign_beacon(struct ieee80211_sub_if_data *sdata,
659 660
				   struct cfg80211_beacon_data *params,
				   const struct ieee80211_csa_settings *csa)
661 662 663
{
	struct beacon_data *new, *old;
	int new_head_len, new_tail_len;
664 665
	int size, err;
	u32 changed = BSS_CHANGED_BEACON;
666

667 668
	old = sdata_dereference(sdata->u.ap.beacon, sdata);

669 670 671

	/* Need to have a beacon head if we don't have one yet */
	if (!params->head && !old)
672
		return -EINVAL;
673 674 675 676 677 678 679 680 681 682 683 684 685 686 687 688 689 690 691 692 693 694 695 696 697 698 699 700 701 702 703

	/* 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;

704 705 706 707 708 709 710
	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]));
	}

711 712 713 714 715 716 717 718 719 720 721 722 723
	/* 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);

724
	err = ieee80211_set_probe_resp(sdata, params->probe_resp,
725
				       params->probe_resp_len, csa);
726 727 728
	if (err < 0)
		return err;
	if (err == 0)
729 730
		changed |= BSS_CHANGED_AP_PROBE_RESP;

731 732 733 734
	rcu_assign_pointer(sdata->u.ap.beacon, new);

	if (old)
		kfree_rcu(old, rcu_head);
735

736
	return changed;
737 738
}

739 740
static int ieee80211_start_ap(struct wiphy *wiphy, struct net_device *dev,
			      struct cfg80211_ap_settings *params)
741
{
742
	struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
743
	struct ieee80211_local *local = sdata->local;
744
	struct beacon_data *old;
745
	struct ieee80211_sub_if_data *vlan;
746 747 748
	u32 changed = BSS_CHANGED_BEACON_INT |
		      BSS_CHANGED_BEACON_ENABLED |
		      BSS_CHANGED_BEACON |
749
		      BSS_CHANGED_SSID |
750 751
		      BSS_CHANGED_P2P_PS |
		      BSS_CHANGED_TXPOWER;
752
	int err;
753

754
	old = sdata_dereference(sdata->u.ap.beacon, sdata);
755 756 757
	if (old)
		return -EALREADY;

758 759 760 761 762 763 764 765 766 767 768 769 770
	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;
	}
771 772
	sdata->needed_rx_chains = sdata->local->rx_chains;

773
	mutex_lock(&local->mtx);
774
	err = ieee80211_vif_use_channel(sdata, &params->chandef,
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Johannes Berg 已提交
775
					IEEE80211_CHANCTX_SHARED);
776 777
	if (!err)
		ieee80211_vif_copy_chanctx_to_vlans(sdata, false);
778
	mutex_unlock(&local->mtx);
779 780 781
	if (err)
		return err;

782 783 784 785 786 787
	/*
	 * 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;
788 789 790 791
	sdata->encrypt_headroom = ieee80211_cs_headroom(sdata->local,
							&params->crypto,
							sdata->vif.type);

792 793 794 795 796
	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;
797 798 799 800
		vlan->encrypt_headroom =
			ieee80211_cs_headroom(sdata->local,
					      &params->crypto,
					      vlan->vif.type);
801 802
	}

803 804
	sdata->vif.bss_conf.beacon_int = params->beacon_interval;
	sdata->vif.bss_conf.dtim_period = params->dtim_period;
805
	sdata->vif.bss_conf.enable_beacon = true;
806 807 808 809 810 811 812 813

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

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Janusz Dziedzic 已提交
814 815 816 817 818 819 820
	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;
821

822
	err = ieee80211_assign_beacon(sdata, &params->beacon, NULL);
823 824
	if (err < 0) {
		ieee80211_vif_release_channel(sdata);
825
		return err;
826
	}
827 828
	changed |= err;

829 830
	err = drv_start_ap(sdata->local, sdata);
	if (err) {
831 832
		old = sdata_dereference(sdata->u.ap.beacon, sdata);

833 834 835
		if (old)
			kfree_rcu(old, rcu_head);
		RCU_INIT_POINTER(sdata->u.ap.beacon, NULL);
836
		ieee80211_vif_release_channel(sdata);
837 838 839
		return err;
	}

840
	ieee80211_recalc_dtim(local, sdata);
841 842
	ieee80211_bss_info_change_notify(sdata, changed);

843 844 845 846
	netif_carrier_on(dev);
	list_for_each_entry(vlan, &sdata->u.ap.vlans, u.vlan.list)
		netif_carrier_on(vlan->dev);

847
	return 0;
848 849
}

850 851
static int ieee80211_change_beacon(struct wiphy *wiphy, struct net_device *dev,
				   struct cfg80211_beacon_data *params)
852
{
853
	struct ieee80211_sub_if_data *sdata;
854
	struct beacon_data *old;
855
	int err;
856

857
	sdata = IEEE80211_DEV_TO_SUB_IF(dev);
858
	sdata_assert_lock(sdata);
859

860 861 862 863 864 865
	/* 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;

866
	old = sdata_dereference(sdata->u.ap.beacon, sdata);
867 868 869
	if (!old)
		return -ENOENT;

870
	err = ieee80211_assign_beacon(sdata, params, NULL);
871 872 873 874
	if (err < 0)
		return err;
	ieee80211_bss_info_change_notify(sdata, err);
	return 0;
875 876
}

877
static int ieee80211_stop_ap(struct wiphy *wiphy, struct net_device *dev)
878
{
879 880 881 882 883
	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;
884
	struct cfg80211_chan_def chandef;
885

886 887
	sdata_assert_lock(sdata);

888
	old_beacon = sdata_dereference(sdata->u.ap.beacon, sdata);
889
	if (!old_beacon)
890
		return -ENOENT;
891
	old_probe_resp = sdata_dereference(sdata->u.ap.probe_resp, sdata);
892

893
	/* abort any running channel switch */
894
	mutex_lock(&local->mtx);
895
	sdata->vif.csa_active = false;
896 897 898 899 900 901
	if (sdata->csa_block_tx) {
		ieee80211_wake_vif_queues(local, sdata,
					  IEEE80211_QUEUE_STOP_REASON_CSA);
		sdata->csa_block_tx = false;
	}

902 903
	mutex_unlock(&local->mtx);

904 905 906
	kfree(sdata->u.ap.next_beacon);
	sdata->u.ap.next_beacon = NULL;

907
	/* turn off carrier for this interface and dependent VLANs */
908 909 910 911
	list_for_each_entry(vlan, &sdata->u.ap.vlans, u.vlan.list)
		netif_carrier_off(vlan->dev);
	netif_carrier_off(dev);

912
	/* remove beacon and probe response */
913
	RCU_INIT_POINTER(sdata->u.ap.beacon, NULL);
914 915 916 917
	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);
918
	sdata->u.ap.driver_smps_mode = IEEE80211_SMPS_OFF;
919

920
	__sta_info_flush(sdata, true);
921
	ieee80211_free_keys(sdata, true);
922

923
	sdata->vif.bss_conf.enable_beacon = false;
924
	sdata->vif.bss_conf.ssid_len = 0;
925
	clear_bit(SDATA_STATE_OFFCHANNEL_BEACON_STOPPED, &sdata->state);
926
	ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_BEACON_ENABLED);
927

928
	if (sdata->wdev.cac_started) {
929
		chandef = sdata->vif.bss_conf.chandef;
930
		cancel_delayed_work_sync(&sdata->dfs_cac_timer_work);
931 932
		cfg80211_cac_event(sdata->dev, &chandef,
				   NL80211_RADAR_CAC_ABORTED,
933 934 935
				   GFP_KERNEL);
	}

936 937
	drv_stop_ap(sdata->local, sdata);

938 939 940 941
	/* 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);

942
	mutex_lock(&local->mtx);
943
	ieee80211_vif_copy_chanctx_to_vlans(sdata, true);
J
Johannes Berg 已提交
944
	ieee80211_vif_release_channel(sdata);
945
	mutex_unlock(&local->mtx);
J
Johannes Berg 已提交
946

947
	return 0;
948 949
}

950 951 952 953 954 955 956 957 958
/* 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
959
} __packed;
960 961 962 963 964 965 966 967 968 969 970 971 972 973 974 975 976

static void ieee80211_send_layer2_update(struct sta_info *sta)
{
	struct iapp_layer2_update *msg;
	struct sk_buff *skb;

	/* Send Level 2 Update Frame to update forwarding tables in layer 2
	 * bridge devices */

	skb = dev_alloc_skb(sizeof(*msg));
	if (!skb)
		return;
	msg = (struct iapp_layer2_update *)skb_put(skb, sizeof(*msg));

	/* 802.2 Type 1 Logical Link Control (LLC) Exchange Identifier (XID)
	 * Update response frame; IEEE Std 802.2-1998, 5.4.1.2.1 */

J
Johannes Berg 已提交
977
	eth_broadcast_addr(msg->da);
978
	memcpy(msg->sa, sta->sta.addr, ETH_ALEN);
979 980 981 982 983 984 985 986 987
	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) */

988 989
	skb->dev = sta->sdata->dev;
	skb->protocol = eth_type_trans(skb, sta->sdata->dev);
990
	memset(skb->cb, 0, sizeof(skb->cb));
991
	netif_rx_ni(skb);
992 993
}

994 995 996 997 998 999 1000 1001 1002 1003 1004 1005 1006 1007 1008 1009 1010
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)) {
1011 1012 1013 1014 1015 1016 1017 1018
		/*
		 * 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);

1019 1020 1021 1022 1023 1024 1025 1026 1027 1028 1029 1030 1031 1032 1033 1034 1035 1036 1037 1038 1039 1040 1041 1042 1043 1044 1045 1046 1047 1048 1049 1050 1051 1052 1053
		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;
}

1054 1055 1056
static int sta_apply_parameters(struct ieee80211_local *local,
				struct sta_info *sta,
				struct station_parameters *params)
1057
{
1058
	int ret = 0;
1059
	struct ieee80211_supported_band *sband;
1060
	struct ieee80211_sub_if_data *sdata = sta->sdata;
J
Johannes Berg 已提交
1061
	enum ieee80211_band band = ieee80211_get_sdata_band(sdata);
1062
	u32 mask, set;
1063

J
Johannes Berg 已提交
1064
	sband = local->hw.wiphy->bands[band];
J
Johannes Berg 已提交
1065

1066 1067
	mask = params->sta_flags_mask;
	set = params->sta_flags_set;
J
Johannes Berg 已提交
1068

1069 1070 1071 1072 1073 1074 1075 1076 1077
	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);
1078 1079 1080 1081 1082 1083 1084 1085 1086 1087 1088 1089
	} 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);
		}
1090
	}
1091

1092 1093 1094 1095
	if (mask & BIT(NL80211_STA_FLAG_WME) &&
	    local->hw.queues >= IEEE80211_NUM_ACS)
		sta->sta.wme = set & BIT(NL80211_STA_FLAG_WME);

1096 1097 1098 1099 1100 1101
	/* 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;
	}
1102

1103 1104
	if (mask & BIT(NL80211_STA_FLAG_SHORT_PREAMBLE)) {
		if (set & BIT(NL80211_STA_FLAG_SHORT_PREAMBLE))
J
Johannes Berg 已提交
1105 1106 1107
			set_sta_flag(sta, WLAN_STA_SHORT_PREAMBLE);
		else
			clear_sta_flag(sta, WLAN_STA_SHORT_PREAMBLE);
1108
	}
1109

1110
	if (mask & BIT(NL80211_STA_FLAG_MFP)) {
1111
		sta->sta.mfp = !!(set & BIT(NL80211_STA_FLAG_MFP));
1112
		if (set & BIT(NL80211_STA_FLAG_MFP))
J
Johannes Berg 已提交
1113 1114 1115
			set_sta_flag(sta, WLAN_STA_MFP);
		else
			clear_sta_flag(sta, WLAN_STA_MFP);
1116
	}
1117

1118 1119
	if (mask & BIT(NL80211_STA_FLAG_TDLS_PEER)) {
		if (set & BIT(NL80211_STA_FLAG_TDLS_PEER))
J
Johannes Berg 已提交
1120 1121 1122
			set_sta_flag(sta, WLAN_STA_TDLS_PEER);
		else
			clear_sta_flag(sta, WLAN_STA_TDLS_PEER);
1123
	}
1124

1125 1126 1127 1128 1129 1130 1131
	/* 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);

1132 1133 1134 1135
	if (params->sta_modify_mask & STATION_PARAM_APPLY_UAPSD) {
		sta->sta.uapsd_queues = params->uapsd_queues;
		sta->sta.max_sp = params->max_sp;
	}
1136

1137 1138 1139 1140 1141 1142 1143
	/*
	 * 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
1144
	/*
1145 1146 1147 1148 1149
	 * 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
1150 1151
	 */

1152 1153 1154 1155
	if (params->listen_interval >= 0)
		sta->listen_interval = params->listen_interval;

	if (params->supported_rates) {
1156 1157 1158 1159
		ieee80211_parse_bitrates(&sdata->vif.bss_conf.chandef,
					 sband, params->supported_rates,
					 params->supported_rates_len,
					 &sta->sta.supp_rates[band]);
1160
	}
1161

J
Johannes Berg 已提交
1162
	if (params->ht_capa)
B
Ben Greear 已提交
1163
		ieee80211_ht_cap_ie_to_sta_ht_cap(sdata, sband,
1164
						  params->ht_capa, sta);
1165

M
Mahesh Palivela 已提交
1166 1167
	if (params->vht_capa)
		ieee80211_vht_cap_ie_to_sta_vht_cap(sdata, sband,
1168
						    params->vht_capa, sta);
M
Mahesh Palivela 已提交
1169

1170 1171 1172 1173 1174 1175 1176 1177 1178
	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);
	}

1179
	if (ieee80211_vif_is_mesh(&sdata->vif)) {
1180
#ifdef CONFIG_MAC80211_MESH
1181
		u32 changed = 0;
1182 1183

		if (params->sta_modify_mask & STATION_PARAM_APPLY_PLINK_STATE) {
1184
			switch (params->plink_state) {
1185
			case NL80211_PLINK_ESTAB:
1186 1187 1188 1189
				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
1190 1191

				ieee80211_mps_sta_status_update(sta);
1192 1193
				changed |= ieee80211_mps_set_sta_local_pm(sta,
					      sdata->u.mesh.mshcfg.power_mode);
1194 1195
				break;
			case NL80211_PLINK_LISTEN:
1196
			case NL80211_PLINK_BLOCKED:
1197 1198 1199 1200 1201 1202 1203
			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);
1204
				sta->plink_state = params->plink_state;
M
Marco Porsch 已提交
1205 1206

				ieee80211_mps_sta_status_update(sta);
1207 1208
				changed |= ieee80211_mps_set_sta_local_pm(sta,
						NL80211_MESH_POWER_UNKNOWN);
1209 1210 1211 1212 1213
				break;
			default:
				/*  nothing  */
				break;
			}
1214 1215 1216 1217 1218 1219 1220 1221 1222 1223 1224 1225
		}

		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;
1226
		}
M
Marco Porsch 已提交
1227 1228

		if (params->local_pm)
1229 1230 1231
			changed |=
			      ieee80211_mps_set_sta_local_pm(sta,
							     params->local_pm);
1232
		ieee80211_mbss_info_change_notify(sdata, changed);
1233
#endif
J
Johannes Berg 已提交
1234
	}
1235

1236 1237 1238 1239 1240 1241 1242
	/* 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;
	}

1243
	return 0;
1244 1245 1246
}

static int ieee80211_add_station(struct wiphy *wiphy, struct net_device *dev,
1247 1248
				 const u8 *mac,
				 struct station_parameters *params)
1249
{
1250
	struct ieee80211_local *local = wiphy_priv(wiphy);
1251 1252
	struct sta_info *sta;
	struct ieee80211_sub_if_data *sdata;
J
Johannes Berg 已提交
1253
	int err;
1254
	int layer2_update;
1255 1256 1257 1258

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

1259 1260
		if (sdata->vif.type != NL80211_IFTYPE_AP_VLAN &&
		    sdata->vif.type != NL80211_IFTYPE_AP)
1261 1262 1263 1264
			return -EINVAL;
	} else
		sdata = IEEE80211_DEV_TO_SUB_IF(dev);

1265
	if (ether_addr_equal(mac, sdata->vif.addr))
1266 1267 1268 1269 1270 1271
		return -EINVAL;

	if (is_multicast_ether_addr(mac))
		return -EINVAL;

	sta = sta_info_alloc(sdata, mac, GFP_KERNEL);
J
Johannes Berg 已提交
1272 1273
	if (!sta)
		return -ENOMEM;
1274

1275 1276 1277 1278
	/*
	 * defaults -- if userspace wants something else we'll
	 * change it accordingly in sta_apply_parameters()
	 */
1279 1280 1281
	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);
1282 1283
	} else {
		sta->sta.tdls = true;
1284
	}
1285

1286 1287 1288 1289 1290
	err = sta_apply_parameters(local, sta, params);
	if (err) {
		sta_info_free(local, sta);
		return err;
	}
1291

1292
	/*
1293 1294
	 * for TDLS, rate control should be initialized only when
	 * rates are known and station is marked authorized
1295 1296 1297
	 */
	if (!test_sta_flag(sta, WLAN_STA_TDLS_PEER))
		rate_control_rate_init(sta);
1298

1299 1300 1301
	layer2_update = sdata->vif.type == NL80211_IFTYPE_AP_VLAN ||
		sdata->vif.type == NL80211_IFTYPE_AP;

1302
	err = sta_info_insert_rcu(sta);
J
Johannes Berg 已提交
1303 1304 1305 1306 1307
	if (err) {
		rcu_read_unlock();
		return err;
	}

1308
	if (layer2_update)
J
Johannes Berg 已提交
1309 1310 1311 1312
		ieee80211_send_layer2_update(sta);

	rcu_read_unlock();

1313 1314 1315 1316
	return 0;
}

static int ieee80211_del_station(struct wiphy *wiphy, struct net_device *dev,
1317
				 struct station_del_parameters *params)
1318
{
1319
	struct ieee80211_sub_if_data *sdata;
1320

1321 1322
	sdata = IEEE80211_DEV_TO_SUB_IF(dev);

1323 1324
	if (params->mac)
		return sta_info_destroy_addr_bss(sdata, params->mac);
1325

1326
	sta_info_flush(sdata);
1327 1328 1329 1330
	return 0;
}

static int ieee80211_change_station(struct wiphy *wiphy,
1331
				    struct net_device *dev, const u8 *mac,
1332 1333
				    struct station_parameters *params)
{
1334
	struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1335
	struct ieee80211_local *local = wiphy_priv(wiphy);
1336 1337
	struct sta_info *sta;
	struct ieee80211_sub_if_data *vlansdata;
1338
	enum cfg80211_station_type statype;
1339
	int err;
1340

1341
	mutex_lock(&local->sta_mtx);
J
Johannes Berg 已提交
1342

1343
	sta = sta_info_get_bss(sdata, mac);
J
Johannes Berg 已提交
1344
	if (!sta) {
1345 1346
		err = -ENOENT;
		goto out_err;
J
Johannes Berg 已提交
1347
	}
1348

1349 1350
	switch (sdata->vif.type) {
	case NL80211_IFTYPE_MESH_POINT:
1351
		if (sdata->u.mesh.user_mpm)
1352
			statype = CFG80211_STA_MESH_PEER_USER;
1353
		else
1354
			statype = CFG80211_STA_MESH_PEER_KERNEL;
1355 1356 1357 1358 1359 1360 1361 1362 1363 1364 1365 1366 1367 1368 1369 1370 1371 1372 1373 1374 1375
		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;
1376 1377
	}

1378 1379 1380 1381
	err = cfg80211_check_station_change(wiphy, params, statype);
	if (err)
		goto out_err;

1382
	if (params->vlan && params->vlan != sta->sdata->dev) {
1383 1384 1385
		bool prev_4addr = false;
		bool new_4addr = false;

1386 1387
		vlansdata = IEEE80211_DEV_TO_SUB_IF(params->vlan);

1388
		if (params->vlan->ieee80211_ptr->use_4addr) {
J
Johannes Berg 已提交
1389
			if (vlansdata->u.vlan.sta) {
1390 1391
				err = -EBUSY;
				goto out_err;
J
Johannes Berg 已提交
1392
			}
1393

1394
			rcu_assign_pointer(vlansdata->u.vlan.sta, sta);
1395 1396 1397 1398 1399
			new_4addr = true;
		}

		if (sta->sdata->vif.type == NL80211_IFTYPE_AP_VLAN &&
		    sta->sdata->u.vlan.sta) {
M
Monam Agarwal 已提交
1400
			RCU_INIT_POINTER(sta->sdata->u.vlan.sta, NULL);
1401
			prev_4addr = true;
1402 1403
		}

1404
		sta->sdata = vlansdata;
1405 1406 1407 1408 1409 1410 1411 1412 1413

		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);
		}

1414 1415 1416
		ieee80211_send_layer2_update(sta);
	}

1417
	err = sta_apply_parameters(local, sta, params);
1418 1419
	if (err)
		goto out_err;
1420

1421
	mutex_unlock(&local->sta_mtx);
J
Johannes Berg 已提交
1422

1423 1424 1425 1426 1427 1428 1429 1430 1431 1432 1433 1434 1435 1436
	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);
	}

1437
	if (sdata->vif.type == NL80211_IFTYPE_STATION &&
E
Eliad Peller 已提交
1438
	    params->sta_flags_mask & BIT(NL80211_STA_FLAG_AUTHORIZED)) {
1439
		ieee80211_recalc_ps(local, -1);
E
Eliad Peller 已提交
1440 1441
		ieee80211_recalc_ps_vif(sdata);
	}
1442

1443
	return 0;
1444 1445 1446
out_err:
	mutex_unlock(&local->sta_mtx);
	return err;
1447 1448
}

1449 1450
#ifdef CONFIG_MAC80211_MESH
static int ieee80211_add_mpath(struct wiphy *wiphy, struct net_device *dev,
1451
			       const u8 *dst, const u8 *next_hop)
1452
{
1453
	struct ieee80211_sub_if_data *sdata;
1454 1455 1456
	struct mesh_path *mpath;
	struct sta_info *sta;

1457 1458
	sdata = IEEE80211_DEV_TO_SUB_IF(dev);

1459
	rcu_read_lock();
1460
	sta = sta_info_get(sdata, next_hop);
1461 1462
	if (!sta) {
		rcu_read_unlock();
1463
		return -ENOENT;
1464
	}
1465

1466 1467
	mpath = mesh_path_add(sdata, dst);
	if (IS_ERR(mpath)) {
1468
		rcu_read_unlock();
1469
		return PTR_ERR(mpath);
1470
	}
1471 1472

	mesh_path_fix_nexthop(mpath, sta);
1473

1474 1475 1476 1477 1478
	rcu_read_unlock();
	return 0;
}

static int ieee80211_del_mpath(struct wiphy *wiphy, struct net_device *dev,
1479
			       const u8 *dst)
1480
{
1481 1482
	struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);

1483
	if (dst)
J
Johannes Berg 已提交
1484
		return mesh_path_del(sdata, dst);
1485

1486
	mesh_path_flush_by_iface(sdata);
1487 1488 1489
	return 0;
}

1490 1491
static int ieee80211_change_mpath(struct wiphy *wiphy, struct net_device *dev,
				  const u8 *dst, const u8 *next_hop)
1492
{
1493
	struct ieee80211_sub_if_data *sdata;
1494 1495 1496
	struct mesh_path *mpath;
	struct sta_info *sta;

1497 1498
	sdata = IEEE80211_DEV_TO_SUB_IF(dev);

1499 1500
	rcu_read_lock();

1501
	sta = sta_info_get(sdata, next_hop);
1502 1503
	if (!sta) {
		rcu_read_unlock();
1504
		return -ENOENT;
1505
	}
1506

J
Johannes Berg 已提交
1507
	mpath = mesh_path_lookup(sdata, dst);
1508 1509 1510 1511 1512 1513
	if (!mpath) {
		rcu_read_unlock();
		return -ENOENT;
	}

	mesh_path_fix_nexthop(mpath, sta);
1514

1515 1516 1517 1518 1519 1520 1521
	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
1522 1523 1524 1525
	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);
1526
	else
1527
		eth_zero_addr(next_hop);
1528

1529 1530
	memset(pinfo, 0, sizeof(*pinfo));

1531 1532
	pinfo->generation = mesh_paths_generation;

1533
	pinfo->filled = MPATH_INFO_FRAME_QLEN |
1534
			MPATH_INFO_SN |
1535 1536 1537 1538 1539 1540 1541
			MPATH_INFO_METRIC |
			MPATH_INFO_EXPTIME |
			MPATH_INFO_DISCOVERY_TIMEOUT |
			MPATH_INFO_DISCOVERY_RETRIES |
			MPATH_INFO_FLAGS;

	pinfo->frame_qlen = mpath->frame_queue.qlen;
1542
	pinfo->sn = mpath->sn;
1543 1544 1545 1546 1547 1548 1549 1550 1551 1552
	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;
1553 1554
	if (mpath->flags & MESH_PATH_SN_VALID)
		pinfo->flags |= NL80211_MPATH_FLAG_SN_VALID;
1555 1556
	if (mpath->flags & MESH_PATH_FIXED)
		pinfo->flags |= NL80211_MPATH_FLAG_FIXED;
1557 1558
	if (mpath->flags & MESH_PATH_RESOLVED)
		pinfo->flags |= NL80211_MPATH_FLAG_RESOLVED;
1559 1560 1561 1562 1563 1564
}

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

{
1565
	struct ieee80211_sub_if_data *sdata;
1566 1567
	struct mesh_path *mpath;

1568 1569
	sdata = IEEE80211_DEV_TO_SUB_IF(dev);

1570
	rcu_read_lock();
J
Johannes Berg 已提交
1571
	mpath = mesh_path_lookup(sdata, dst);
1572 1573 1574 1575 1576 1577 1578 1579 1580 1581 1582
	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,
1583 1584
				int idx, u8 *dst, u8 *next_hop,
				struct mpath_info *pinfo)
1585
{
1586
	struct ieee80211_sub_if_data *sdata;
1587 1588
	struct mesh_path *mpath;

1589 1590
	sdata = IEEE80211_DEV_TO_SUB_IF(dev);

1591
	rcu_read_lock();
J
Johannes Berg 已提交
1592
	mpath = mesh_path_lookup_by_idx(sdata, idx);
1593 1594 1595 1596 1597 1598 1599 1600 1601
	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;
}
1602

1603 1604 1605 1606 1607 1608 1609 1610 1611 1612 1613 1614 1615 1616 1617 1618 1619 1620 1621 1622 1623 1624 1625 1626 1627 1628 1629 1630 1631 1632 1633 1634 1635 1636 1637 1638 1639 1640 1641 1642 1643 1644 1645 1646 1647 1648 1649 1650 1651 1652 1653
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;
}

1654
static int ieee80211_get_mesh_config(struct wiphy *wiphy,
1655 1656 1657 1658 1659 1660 1661 1662 1663 1664 1665 1666 1667 1668 1669
				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;
}

1670 1671 1672 1673 1674
static int copy_mesh_setup(struct ieee80211_if_mesh *ifmsh,
		const struct mesh_setup *setup)
{
	u8 *new_ie;
	const u8 *old_ie;
1675 1676
	struct ieee80211_sub_if_data *sdata = container_of(ifmsh,
					struct ieee80211_sub_if_data, u.mesh);
1677

1678
	/* allocate information elements */
1679
	new_ie = NULL;
1680
	old_ie = ifmsh->ie;
1681

1682 1683
	if (setup->ie_len) {
		new_ie = kmemdup(setup->ie, setup->ie_len,
1684 1685 1686 1687
				GFP_KERNEL);
		if (!new_ie)
			return -ENOMEM;
	}
1688 1689 1690
	ifmsh->ie_len = setup->ie_len;
	ifmsh->ie = new_ie;
	kfree(old_ie);
1691 1692 1693 1694

	/* 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);
1695
	ifmsh->mesh_sp_id = setup->sync_method;
1696 1697
	ifmsh->mesh_pp_id = setup->path_sel_proto;
	ifmsh->mesh_pm_id = setup->path_metric;
1698
	ifmsh->user_mpm = setup->user_mpm;
1699
	ifmsh->mesh_auth_id = setup->auth_id;
1700 1701 1702 1703 1704
	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;
1705

1706 1707 1708
	/* mcast rate setting in Mesh Node */
	memcpy(sdata->vif.bss_conf.mcast_rate, setup->mcast_rate,
						sizeof(setup->mcast_rate));
1709
	sdata->vif.bss_conf.basic_rates = setup->basic_rates;
1710

1711 1712 1713
	sdata->vif.bss_conf.beacon_int = setup->beacon_interval;
	sdata->vif.bss_conf.dtim_period = setup->dtim_period;

1714 1715 1716
	return 0;
}

1717
static int ieee80211_update_mesh_config(struct wiphy *wiphy,
1718 1719
					struct net_device *dev, u32 mask,
					const struct mesh_config *nconf)
1720 1721 1722
{
	struct mesh_config *conf;
	struct ieee80211_sub_if_data *sdata;
1723 1724
	struct ieee80211_if_mesh *ifmsh;

1725
	sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1726
	ifmsh = &sdata->u.mesh;
1727 1728 1729 1730 1731 1732 1733 1734 1735 1736 1737 1738 1739 1740 1741

	/* 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;
1742
	if (_chg_mesh_attr(NL80211_MESHCONF_ELEMENT_TTL, mask))
1743
		conf->element_ttl = nconf->element_ttl;
1744 1745 1746
	if (_chg_mesh_attr(NL80211_MESHCONF_AUTO_OPEN_PLINKS, mask)) {
		if (ifmsh->user_mpm)
			return -EBUSY;
1747
		conf->auto_open_plinks = nconf->auto_open_plinks;
1748
	}
1749 1750 1751
	if (_chg_mesh_attr(NL80211_MESHCONF_SYNC_OFFSET_MAX_NEIGHBOR, mask))
		conf->dot11MeshNbrOffsetMaxNeighbor =
			nconf->dot11MeshNbrOffsetMaxNeighbor;
1752 1753 1754 1755 1756 1757 1758 1759 1760 1761 1762 1763 1764
	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;
1765 1766 1767
	if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_PERR_MIN_INTERVAL, mask))
		conf->dot11MeshHWMPperrMinInterval =
			nconf->dot11MeshHWMPperrMinInterval;
1768 1769 1770 1771
	if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME,
			   mask))
		conf->dot11MeshHWMPnetDiameterTraversalTime =
			nconf->dot11MeshHWMPnetDiameterTraversalTime;
1772 1773 1774 1775
	if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_ROOTMODE, mask)) {
		conf->dot11MeshHWMPRootMode = nconf->dot11MeshHWMPRootMode;
		ieee80211_mesh_root_setup(ifmsh);
	}
1776
	if (_chg_mesh_attr(NL80211_MESHCONF_GATE_ANNOUNCEMENTS, mask)) {
T
Thomas Pedersen 已提交
1777 1778 1779 1780
		/* our current gate announcement implementation rides on root
		 * announcements, so require this ifmsh to also be a root node
		 * */
		if (nconf->dot11MeshGateAnnouncementProtocol &&
1781 1782
		    !(conf->dot11MeshHWMPRootMode > IEEE80211_ROOTMODE_ROOT)) {
			conf->dot11MeshHWMPRootMode = IEEE80211_PROACTIVE_RANN;
T
Thomas Pedersen 已提交
1783 1784
			ieee80211_mesh_root_setup(ifmsh);
		}
1785 1786 1787
		conf->dot11MeshGateAnnouncementProtocol =
			nconf->dot11MeshGateAnnouncementProtocol;
	}
1788
	if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_RANN_INTERVAL, mask))
1789 1790
		conf->dot11MeshHWMPRannInterval =
			nconf->dot11MeshHWMPRannInterval;
1791 1792
	if (_chg_mesh_attr(NL80211_MESHCONF_FORWARDING, mask))
		conf->dot11MeshForwarding = nconf->dot11MeshForwarding;
1793 1794 1795 1796 1797 1798 1799 1800
	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;
	}
1801 1802 1803 1804 1805
	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);
	}
1806 1807 1808 1809 1810 1811
	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;
1812 1813 1814
	if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_CONFIRMATION_INTERVAL, mask))
		conf->dot11MeshHWMPconfirmationInterval =
			nconf->dot11MeshHWMPconfirmationInterval;
M
Marco Porsch 已提交
1815 1816 1817 1818
	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
1819
	if (_chg_mesh_attr(NL80211_MESHCONF_AWAKE_WINDOW, mask))
M
Marco Porsch 已提交
1820 1821
		conf->dot11MeshAwakeWindowDuration =
			nconf->dot11MeshAwakeWindowDuration;
1822 1823
	if (_chg_mesh_attr(NL80211_MESHCONF_PLINK_TIMEOUT, mask))
		conf->plink_timeout = nconf->plink_timeout;
T
Thomas Pedersen 已提交
1824
	ieee80211_mbss_info_change_notify(sdata, BSS_CHANGED_BEACON);
1825 1826 1827
	return 0;
}

1828 1829 1830 1831 1832 1833
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;
1834
	int err;
1835

1836 1837 1838 1839
	memcpy(&ifmsh->mshcfg, conf, sizeof(struct mesh_config));
	err = copy_mesh_setup(ifmsh, setup);
	if (err)
		return err;
1840

1841 1842 1843 1844
	/* can mesh use other SMPS modes? */
	sdata->smps_mode = IEEE80211_SMPS_OFF;
	sdata->needed_rx_chains = sdata->local->rx_chains;

1845
	mutex_lock(&sdata->local->mtx);
1846
	err = ieee80211_vif_use_channel(sdata, &setup->chandef,
J
Johannes Berg 已提交
1847
					IEEE80211_CHANCTX_SHARED);
1848
	mutex_unlock(&sdata->local->mtx);
1849 1850 1851
	if (err)
		return err;

T
Thomas Pedersen 已提交
1852
	return ieee80211_start_mesh(sdata);
1853 1854 1855 1856 1857 1858 1859
}

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);
1860
	mutex_lock(&sdata->local->mtx);
J
Johannes Berg 已提交
1861
	ieee80211_vif_release_channel(sdata);
1862
	mutex_unlock(&sdata->local->mtx);
1863 1864 1865

	return 0;
}
1866 1867
#endif

1868 1869 1870 1871
static int ieee80211_change_bss(struct wiphy *wiphy,
				struct net_device *dev,
				struct bss_parameters *params)
{
J
Johannes Berg 已提交
1872 1873
	struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
	enum ieee80211_band band;
1874 1875
	u32 changed = 0;

1876
	if (!sdata_dereference(sdata->u.ap.beacon, sdata))
J
Johannes Berg 已提交
1877 1878 1879
		return -ENOENT;

	band = ieee80211_get_sdata_band(sdata);
1880 1881

	if (params->use_cts_prot >= 0) {
J
Johannes Berg 已提交
1882
		sdata->vif.bss_conf.use_cts_prot = params->use_cts_prot;
1883 1884 1885
		changed |= BSS_CHANGED_ERP_CTS_PROT;
	}
	if (params->use_short_preamble >= 0) {
J
Johannes Berg 已提交
1886
		sdata->vif.bss_conf.use_short_preamble =
1887 1888 1889
			params->use_short_preamble;
		changed |= BSS_CHANGED_ERP_PREAMBLE;
	}
1890 1891

	if (!sdata->vif.bss_conf.use_short_slot &&
J
Johannes Berg 已提交
1892
	    band == IEEE80211_BAND_5GHZ) {
1893 1894 1895 1896
		sdata->vif.bss_conf.use_short_slot = true;
		changed |= BSS_CHANGED_ERP_SLOT;
	}

1897
	if (params->use_short_slot_time >= 0) {
J
Johannes Berg 已提交
1898
		sdata->vif.bss_conf.use_short_slot =
1899 1900 1901 1902
			params->use_short_slot_time;
		changed |= BSS_CHANGED_ERP_SLOT;
	}

1903
	if (params->basic_rates) {
1904 1905 1906 1907 1908
		ieee80211_parse_bitrates(&sdata->vif.bss_conf.chandef,
					 wiphy->bands[band],
					 params->basic_rates,
					 params->basic_rates_len,
					 &sdata->vif.bss_conf.basic_rates);
1909 1910 1911
		changed |= BSS_CHANGED_BASIC_RATES;
	}

1912 1913 1914 1915 1916 1917 1918
	if (params->ap_isolate >= 0) {
		if (params->ap_isolate)
			sdata->flags |= IEEE80211_SDATA_DONT_BRIDGE_PACKETS;
		else
			sdata->flags &= ~IEEE80211_SDATA_DONT_BRIDGE_PACKETS;
	}

1919 1920 1921 1922 1923 1924
	if (params->ht_opmode >= 0) {
		sdata->vif.bss_conf.ht_operation_mode =
			(u16) params->ht_opmode;
		changed |= BSS_CHANGED_HT;
	}

1925
	if (params->p2p_ctwindow >= 0) {
J
Janusz Dziedzic 已提交
1926 1927 1928 1929
		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;
1930 1931 1932
		changed |= BSS_CHANGED_P2P_PS;
	}

J
Janusz Dziedzic 已提交
1933 1934 1935 1936 1937 1938 1939
	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;
1940 1941 1942
		changed |= BSS_CHANGED_P2P_PS;
	}

1943 1944 1945 1946 1947
	ieee80211_bss_info_change_notify(sdata, changed);

	return 0;
}

1948
static int ieee80211_set_txq_params(struct wiphy *wiphy,
1949
				    struct net_device *dev,
1950 1951 1952
				    struct ieee80211_txq_params *params)
{
	struct ieee80211_local *local = wiphy_priv(wiphy);
1953
	struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1954 1955 1956 1957 1958
	struct ieee80211_tx_queue_params p;

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

1959 1960 1961
	if (local->hw.queues < IEEE80211_NUM_ACS)
		return -EOPNOTSUPP;

1962 1963 1964 1965 1966
	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
1967 1968 1969 1970 1971 1972 1973

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

1974 1975
	sdata->tx_conf[params->ac] = p;
	if (drv_conf_tx(local, sdata, params->ac, &p)) {
J
Joe Perches 已提交
1976
		wiphy_debug(local->hw.wiphy,
1977 1978
			    "failed to set TX queue parameters for AC %d\n",
			    params->ac);
1979 1980 1981
		return -EINVAL;
	}

1982 1983
	ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_QOS);

1984 1985 1986
	return 0;
}

1987
#ifdef CONFIG_PM
J
Johannes Berg 已提交
1988 1989
static int ieee80211_suspend(struct wiphy *wiphy,
			     struct cfg80211_wowlan *wowlan)
1990
{
1991
	return __ieee80211_suspend(wiphy_priv(wiphy), wowlan);
1992 1993 1994 1995 1996 1997 1998 1999 2000 2001 2002
}

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

2003 2004 2005
static int ieee80211_scan(struct wiphy *wiphy,
			  struct cfg80211_scan_request *req)
{
J
Johannes Berg 已提交
2006 2007 2008
	struct ieee80211_sub_if_data *sdata;

	sdata = IEEE80211_WDEV_TO_SUB_IF(req->wdev);
2009

2010 2011 2012 2013 2014
	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:
2015
	case NL80211_IFTYPE_P2P_DEVICE:
2016 2017 2018 2019
		break;
	case NL80211_IFTYPE_P2P_GO:
		if (sdata->local->ops->hw_scan)
			break;
2020 2021 2022 2023 2024
		/*
		 * FIXME: implement NoA while scanning in software,
		 * for now fall through to allow scanning only when
		 * beaconing hasn't been configured yet
		 */
2025
	case NL80211_IFTYPE_AP:
2026 2027 2028 2029 2030 2031 2032 2033 2034 2035
		/*
		 * 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)))
2036 2037 2038 2039 2040
			return -EOPNOTSUPP;
		break;
	default:
		return -EOPNOTSUPP;
	}
2041 2042 2043 2044

	return ieee80211_request_scan(sdata, req);
}

2045 2046 2047 2048 2049 2050 2051 2052 2053 2054 2055 2056 2057 2058
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
2059
ieee80211_sched_scan_stop(struct wiphy *wiphy, struct net_device *dev)
2060 2061 2062 2063 2064 2065
{
	struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);

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

2066
	return ieee80211_request_sched_scan_stop(sdata);
2067 2068
}

2069 2070 2071
static int ieee80211_auth(struct wiphy *wiphy, struct net_device *dev,
			  struct cfg80211_auth_request *req)
{
2072
	return ieee80211_mgd_auth(IEEE80211_DEV_TO_SUB_IF(dev), req);
2073 2074 2075 2076 2077
}

static int ieee80211_assoc(struct wiphy *wiphy, struct net_device *dev,
			   struct cfg80211_assoc_request *req)
{
2078
	return ieee80211_mgd_assoc(IEEE80211_DEV_TO_SUB_IF(dev), req);
2079 2080 2081
}

static int ieee80211_deauth(struct wiphy *wiphy, struct net_device *dev,
2082
			    struct cfg80211_deauth_request *req)
2083
{
2084
	return ieee80211_mgd_deauth(IEEE80211_DEV_TO_SUB_IF(dev), req);
2085 2086 2087
}

static int ieee80211_disassoc(struct wiphy *wiphy, struct net_device *dev,
2088
			      struct cfg80211_disassoc_request *req)
2089
{
2090
	return ieee80211_mgd_disassoc(IEEE80211_DEV_TO_SUB_IF(dev), req);
2091 2092
}

2093 2094 2095
static int ieee80211_join_ibss(struct wiphy *wiphy, struct net_device *dev,
			       struct cfg80211_ibss_params *params)
{
J
Johannes Berg 已提交
2096
	return ieee80211_ibss_join(IEEE80211_DEV_TO_SUB_IF(dev), params);
2097 2098 2099 2100
}

static int ieee80211_leave_ibss(struct wiphy *wiphy, struct net_device *dev)
{
J
Johannes Berg 已提交
2101
	return ieee80211_ibss_leave(IEEE80211_DEV_TO_SUB_IF(dev));
2102 2103
}

2104 2105 2106 2107 2108 2109 2110 2111 2112 2113 2114
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));
}

2115 2116 2117 2118 2119
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);

2120 2121
	memcpy(sdata->vif.bss_conf.mcast_rate, rate,
	       sizeof(int) * IEEE80211_NUM_BANDS);
2122 2123 2124 2125

	return 0;
}

2126 2127 2128
static int ieee80211_set_wiphy_params(struct wiphy *wiphy, u32 changed)
{
	struct ieee80211_local *local = wiphy_priv(wiphy);
2129
	int err;
2130

2131
	if (changed & WIPHY_PARAM_FRAG_THRESHOLD) {
J
Johannes Berg 已提交
2132 2133
		ieee80211_check_fast_xmit_all(local);

2134 2135
		err = drv_set_frag_threshold(local, wiphy->frag_threshold);

J
Johannes Berg 已提交
2136 2137
		if (err) {
			ieee80211_check_fast_xmit_all(local);
2138
			return err;
J
Johannes Berg 已提交
2139
		}
2140 2141
	}

2142 2143 2144 2145 2146 2147 2148
	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);
2149 2150 2151 2152 2153

		if (err)
			return err;
	}

2154
	if (changed & WIPHY_PARAM_RTS_THRESHOLD) {
2155
		err = drv_set_rts_threshold(local, wiphy->rts_threshold);
2156

2157 2158
		if (err)
			return err;
2159 2160
	}

2161 2162 2163
	if (changed & WIPHY_PARAM_RETRY_SHORT) {
		if (wiphy->retry_short > IEEE80211_MAX_TX_RETRY)
			return -EINVAL;
2164
		local->hw.conf.short_frame_max_tx_count = wiphy->retry_short;
2165 2166 2167 2168
	}
	if (changed & WIPHY_PARAM_RETRY_LONG) {
		if (wiphy->retry_long > IEEE80211_MAX_TX_RETRY)
			return -EINVAL;
2169
		local->hw.conf.long_frame_max_tx_count = wiphy->retry_long;
2170
	}
2171 2172 2173 2174 2175 2176 2177
	if (changed &
	    (WIPHY_PARAM_RETRY_SHORT | WIPHY_PARAM_RETRY_LONG))
		ieee80211_hw_config(local, IEEE80211_CONF_CHANGE_RETRY_LIMITS);

	return 0;
}

2178
static int ieee80211_set_tx_power(struct wiphy *wiphy,
2179
				  struct wireless_dev *wdev,
2180
				  enum nl80211_tx_power_setting type, int mbm)
2181 2182
{
	struct ieee80211_local *local = wiphy_priv(wiphy);
2183
	struct ieee80211_sub_if_data *sdata;
2184 2185
	enum nl80211_tx_power_setting txp_type = type;
	bool update_txp_type = false;
2186

2187 2188 2189 2190 2191 2192
	if (wdev) {
		sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);

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

2203 2204 2205 2206 2207 2208
		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);
2209 2210 2211

		return 0;
	}
J
Johannes Berg 已提交
2212

2213
	switch (type) {
2214
	case NL80211_TX_POWER_AUTOMATIC:
2215
		local->user_power_level = IEEE80211_UNSET_POWER_LEVEL;
2216
		txp_type = NL80211_TX_POWER_LIMITED;
2217
		break;
2218 2219 2220 2221 2222
	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);
2223 2224 2225
		break;
	}

2226
	mutex_lock(&local->iflist_mtx);
2227
	list_for_each_entry(sdata, &local->interfaces, list) {
2228
		sdata->user_power_level = local->user_power_level;
2229 2230 2231 2232
		if (txp_type != sdata->vif.bss_conf.txpower_type)
			update_txp_type = true;
		sdata->vif.bss_conf.txpower_type = txp_type;
	}
2233
	list_for_each_entry(sdata, &local->interfaces, list)
2234
		ieee80211_recalc_txpower(sdata, update_txp_type);
2235
	mutex_unlock(&local->iflist_mtx);
2236 2237 2238 2239

	return 0;
}

2240 2241 2242
static int ieee80211_get_tx_power(struct wiphy *wiphy,
				  struct wireless_dev *wdev,
				  int *dbm)
2243 2244
{
	struct ieee80211_local *local = wiphy_priv(wiphy);
2245
	struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
2246

2247 2248 2249
	if (local->ops->get_txpower)
		return drv_get_txpower(local, sdata, dbm);

2250 2251 2252 2253
	if (!local->use_chanctx)
		*dbm = local->hw.conf.power_level;
	else
		*dbm = sdata->vif.bss_conf.txpower;
2254 2255 2256 2257

	return 0;
}

J
Johannes Berg 已提交
2258
static int ieee80211_set_wds_peer(struct wiphy *wiphy, struct net_device *dev,
J
Johannes Berg 已提交
2259
				  const u8 *addr)
J
Johannes Berg 已提交
2260 2261 2262 2263 2264 2265 2266 2267
{
	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
2268 2269 2270 2271 2272 2273 2274
static void ieee80211_rfkill_poll(struct wiphy *wiphy)
{
	struct ieee80211_local *local = wiphy_priv(wiphy);

	drv_rfkill_poll(local);
}

2275
#ifdef CONFIG_NL80211_TESTMODE
2276 2277 2278
static int ieee80211_testmode_cmd(struct wiphy *wiphy,
				  struct wireless_dev *wdev,
				  void *data, int len)
2279 2280
{
	struct ieee80211_local *local = wiphy_priv(wiphy);
2281
	struct ieee80211_vif *vif = NULL;
2282 2283 2284 2285

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

2286 2287 2288 2289 2290 2291 2292 2293 2294
	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);
2295
}
W
Wey-Yi Guy 已提交
2296 2297 2298 2299 2300 2301 2302 2303 2304 2305 2306 2307 2308

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);
}
2309 2310
#endif

2311 2312 2313 2314 2315 2316 2317 2318 2319 2320 2321 2322 2323 2324 2325 2326 2327 2328 2329 2330 2331 2332 2333 2334 2335 2336 2337 2338
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,
2339
	       "SMPS %d requested in AP mode, sending Action frame to %d stations\n",
2340 2341 2342
	       smps_mode, atomic_read(&sdata->u.ap.num_mcast_sta));

	mutex_lock(&sdata->local->sta_mtx);
2343 2344 2345 2346 2347 2348 2349
	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;
2350

2351 2352 2353
		/* This station doesn't support MIMO - skip it */
		if (sta_info_tx_streams(sta) == 1)
			continue;
2354

2355 2356 2357 2358 2359 2360 2361 2362 2363 2364 2365
		/*
		 * 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;
		}
2366

2367 2368 2369 2370 2371 2372
		/*
		 * 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;
2373

2374 2375 2376
		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);
2377 2378 2379 2380 2381 2382 2383 2384 2385 2386 2387
	}
	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)
2388 2389 2390 2391 2392
{
	const u8 *ap;
	enum ieee80211_smps_mode old_req;
	int err;

2393
	lockdep_assert_held(&sdata->wdev.mtx);
2394

2395 2396 2397
	if (WARN_ON_ONCE(sdata->vif.type != NL80211_IFTYPE_STATION))
		return -EINVAL;

2398 2399 2400 2401 2402 2403 2404 2405 2406
	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
2407 2408
	 * association, there's no need to do anything, just store
	 * the new value until we associate.
2409 2410
	 */
	if (!sdata->u.mgd.associated ||
2411
	    sdata->vif.bss_conf.chandef.width == NL80211_CHAN_WIDTH_20_NOHT)
2412 2413
		return 0;

2414
	ap = sdata->u.mgd.associated->bssid;
2415 2416 2417 2418 2419 2420 2421 2422 2423 2424 2425 2426 2427 2428 2429 2430 2431

	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
2432 2433 2434 2435 2436 2437
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);

2438
	if (sdata->vif.type != NL80211_IFTYPE_STATION)
2439 2440
		return -EOPNOTSUPP;

J
Johannes Berg 已提交
2441 2442 2443 2444
	if (!(local->hw.flags & IEEE80211_HW_SUPPORTS_PS))
		return -EOPNOTSUPP;

	if (enabled == sdata->u.mgd.powersave &&
2445
	    timeout == local->dynamic_ps_forced_timeout)
J
Johannes Berg 已提交
2446 2447 2448
		return 0;

	sdata->u.mgd.powersave = enabled;
2449
	local->dynamic_ps_forced_timeout = timeout;
J
Johannes Berg 已提交
2450

2451
	/* no change, but if automatic follow powersave */
2452
	sdata_lock(sdata);
2453
	__ieee80211_request_smps_mgd(sdata, sdata->u.mgd.req_smps);
2454
	sdata_unlock(sdata);
2455

J
Johannes Berg 已提交
2456 2457 2458 2459
	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
2460
	ieee80211_recalc_ps_vif(sdata);
J
Johannes Berg 已提交
2461 2462 2463 2464

	return 0;
}

2465 2466 2467 2468 2469 2470 2471 2472 2473 2474 2475 2476 2477 2478 2479 2480
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 */
2481 2482
	if (sdata->u.mgd.associated &&
	    sdata->vif.driver_flags & IEEE80211_VIF_SUPPORTS_CQM_RSSI)
2483 2484 2485 2486 2487
		ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_CQM);

	return 0;
}

J
Johannes Berg 已提交
2488 2489 2490 2491 2492 2493 2494
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);
2495
	int i, ret;
2496

2497 2498 2499
	if (!ieee80211_sdata_running(sdata))
		return -ENETDOWN;

2500 2501 2502 2503 2504
	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
2505

2506
	for (i = 0; i < IEEE80211_NUM_BANDS; i++) {
2507 2508 2509
		struct ieee80211_supported_band *sband = wiphy->bands[i];
		int j;

2510
		sdata->rc_rateidx_mask[i] = mask->control[i].legacy;
2511 2512
		memcpy(sdata->rc_rateidx_mcs_mask[i], mask->control[i].ht_mcs,
		       sizeof(mask->control[i].ht_mcs));
2513 2514 2515 2516 2517 2518 2519 2520 2521 2522

		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;
			}
2523
	}
J
Johannes Berg 已提交
2524

2525
	return 0;
J
Johannes Berg 已提交
2526 2527
}

2528 2529 2530 2531 2532 2533 2534 2535 2536 2537 2538 2539 2540 2541 2542 2543 2544 2545 2546 2547 2548 2549 2550 2551 2552 2553 2554 2555 2556 2557 2558 2559 2560 2561 2562 2563 2564 2565 2566 2567 2568 2569 2570 2571 2572 2573 2574 2575 2576 2577 2578 2579
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;
}

2580 2581 2582 2583
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,
2584 2585
				    struct sk_buff *txskb,
				    enum ieee80211_roc_type type)
2586 2587 2588
{
	struct ieee80211_roc_work *roc, *tmp;
	bool queued = false;
2589 2590 2591 2592
	int ret;

	lockdep_assert_held(&local->mtx);

2593 2594 2595
	if (local->use_chanctx && !local->ops->remain_on_channel)
		return -EOPNOTSUPP;

2596 2597 2598 2599
	roc = kzalloc(sizeof(*roc), GFP_KERNEL);
	if (!roc)
		return -ENOMEM;

2600 2601 2602 2603 2604 2605 2606 2607 2608 2609 2610 2611
	/*
	 * 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;

2612 2613 2614 2615
	roc->chan = channel;
	roc->duration = duration;
	roc->req_duration = duration;
	roc->frame = txskb;
2616
	roc->type = type;
2617 2618 2619 2620 2621
	roc->mgmt_tx_cookie = (unsigned long)txskb;
	roc->sdata = sdata;
	INIT_DELAYED_WORK(&roc->work, ieee80211_sw_roc_work);
	INIT_LIST_HEAD(&roc->dependents);

2622 2623 2624 2625 2626 2627 2628 2629 2630 2631 2632 2633 2634 2635 2636 2637 2638 2639
	/*
	 * cookie is either the roc cookie (for normal roc)
	 * or the SKB (for mgmt TX)
	 */
	if (!txskb) {
		/* local->mtx protects this */
		local->roc_cookie_counter++;
		roc->cookie = local->roc_cookie_counter;
		/* wow, you wrapped 64 bits ... more likely a bug */
		if (WARN_ON(roc->cookie == 0)) {
			roc->cookie = 1;
			local->roc_cookie_counter++;
		}
		*cookie = roc->cookie;
	} else {
		*cookie = (unsigned long)txskb;
	}

2640
	/* if there's one pending or we're scanning, queue this one */
2641
	if (!list_empty(&local->roc_list) ||
2642
	    local->scanning || ieee80211_is_radar_required(local))
2643 2644 2645 2646 2647 2648 2649 2650 2651 2652
		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) */

2653
	ret = drv_remain_on_channel(local, sdata, channel, duration, type);
2654
	if (ret) {
2655 2656
		kfree(roc);
		return ret;
2657 2658
	}

2659 2660 2661 2662 2663
	roc->started = true;
	goto out_queue;

 out_check_combine:
	list_for_each_entry(tmp, &local->roc_list, list) {
2664
		if (tmp->chan != channel || tmp->sdata != sdata)
2665 2666 2667 2668 2669 2670 2671
			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.
2672 2673
		 * If the type of the new ROC has higher priority, modify the
		 * type of the previous one to match that of the new one.
2674 2675 2676 2677
		 */
		if (!tmp->started) {
			list_add_tail(&roc->list, &tmp->dependents);
			tmp->duration = max(tmp->duration, roc->duration);
2678
			tmp->type = max(tmp->type, roc->type);
2679 2680 2681 2682 2683 2684 2685 2686 2687
			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
2688
			 * when the master one begins. If it has begun,
2689 2690
			 * check that there's still a minimum time left and
			 * if so, start this one, transmitting the frame, but
2691
			 * add it to the list directly after this one with
2692 2693 2694 2695 2696 2697
			 * 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.
2698 2699
			 * TODO: the ROC type is ignored here, assuming that it
			 * is better to immediately use the current ROC.
2700 2701 2702 2703 2704 2705 2706
			 */
			if (!tmp->hw_begun) {
				list_add_tail(&roc->list, &tmp->dependents);
				queued = true;
				break;
			}

2707
			if (ieee80211_coalesce_started_roc(local, roc, tmp))
2708 2709 2710 2711 2712 2713 2714 2715 2716 2717 2718 2719 2720 2721 2722 2723 2724 2725 2726 2727 2728 2729 2730 2731 2732 2733 2734 2735 2736 2737 2738 2739 2740
				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;
2741 2742
}

2743
static int ieee80211_remain_on_channel(struct wiphy *wiphy,
2744
				       struct wireless_dev *wdev,
2745 2746 2747 2748
				       struct ieee80211_channel *chan,
				       unsigned int duration,
				       u64 *cookie)
{
2749
	struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
2750
	struct ieee80211_local *local = sdata->local;
2751
	int ret;
2752

2753
	mutex_lock(&local->mtx);
2754
	ret = ieee80211_start_roc_work(local, sdata, chan,
2755 2756
				       duration, cookie, NULL,
				       IEEE80211_ROC_TYPE_NORMAL);
2757
	mutex_unlock(&local->mtx);
2758

2759
	return ret;
2760 2761
}

2762 2763
static int ieee80211_cancel_roc(struct ieee80211_local *local,
				u64 cookie, bool mgmt_tx)
2764
{
2765
	struct ieee80211_roc_work *roc, *tmp, *found = NULL;
2766 2767
	int ret;

2768 2769
	mutex_lock(&local->mtx);
	list_for_each_entry_safe(roc, tmp, &local->roc_list, list) {
2770 2771 2772
		struct ieee80211_roc_work *dep, *tmp2;

		list_for_each_entry_safe(dep, tmp2, &roc->dependents, list) {
2773
			if (!mgmt_tx && dep->cookie != cookie)
2774 2775 2776 2777 2778 2779 2780
				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);

2781
			ieee80211_roc_notify_destroy(dep, true);
2782 2783 2784
			return 0;
		}

2785
		if (!mgmt_tx && roc->cookie != cookie)
2786 2787 2788
			continue;
		else if (mgmt_tx && roc->mgmt_tx_cookie != cookie)
			continue;
2789

2790 2791 2792
		found = roc;
		break;
	}
2793

2794 2795 2796 2797
	if (!found) {
		mutex_unlock(&local->mtx);
		return -ENOENT;
	}
2798

2799 2800 2801 2802 2803 2804 2805
	/*
	 * 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.
	 */

2806 2807 2808 2809 2810 2811 2812 2813
	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;
			}
		}
2814

2815
		list_del(&found->list);
2816

2817 2818
		if (found->started)
			ieee80211_start_next_roc(local);
2819
		mutex_unlock(&local->mtx);
2820

2821
		ieee80211_roc_notify_destroy(found, true);
2822 2823 2824 2825
	} else {
		/* work may be pending so use it all the time */
		found->abort = true;
		ieee80211_queue_delayed_work(&local->hw, &found->work, 0);
2826 2827 2828

		mutex_unlock(&local->mtx);

2829 2830
		/* work will clean up etc */
		flush_delayed_work(&found->work);
2831 2832
		WARN_ON(!found->to_be_freed);
		kfree(found);
2833
	}
2834

2835
	return 0;
2836 2837
}

2838
static int ieee80211_cancel_remain_on_channel(struct wiphy *wiphy,
2839
					      struct wireless_dev *wdev,
2840
					      u64 cookie)
2841
{
2842
	struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
2843
	struct ieee80211_local *local = sdata->local;
2844

2845
	return ieee80211_cancel_roc(local, cookie, false);
2846 2847
}

2848 2849
static int ieee80211_start_radar_detection(struct wiphy *wiphy,
					   struct net_device *dev,
2850 2851
					   struct cfg80211_chan_def *chandef,
					   u32 cac_time_ms)
2852 2853 2854 2855 2856
{
	struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
	struct ieee80211_local *local = sdata->local;
	int err;

2857 2858 2859 2860 2861
	mutex_lock(&local->mtx);
	if (!list_empty(&local->roc_list) || local->scanning) {
		err = -EBUSY;
		goto out_unlock;
	}
2862 2863 2864 2865 2866 2867 2868 2869

	/* 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)
2870
		goto out_unlock;
2871 2872

	ieee80211_queue_delayed_work(&sdata->local->hw,
2873 2874
				     &sdata->dfs_cac_timer_work,
				     msecs_to_jiffies(cac_time_ms));
2875

2876 2877 2878
 out_unlock:
	mutex_unlock(&local->mtx);
	return err;
2879 2880
}

2881 2882 2883 2884 2885 2886 2887 2888 2889 2890 2891 2892 2893 2894 2895 2896 2897 2898 2899 2900 2901 2902 2903 2904 2905 2906 2907 2908 2909 2910 2911 2912 2913 2914 2915 2916 2917 2918 2919 2920 2921 2922 2923 2924 2925 2926 2927 2928 2929 2930 2931 2932 2933 2934 2935 2936
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;
}

2937
void ieee80211_csa_finish(struct ieee80211_vif *vif)
2938
{
2939
	struct ieee80211_sub_if_data *sdata = vif_to_sdata(vif);
2940

2941 2942 2943 2944
	ieee80211_queue_work(&sdata->local->hw,
			     &sdata->csa_finalize_work);
}
EXPORT_SYMBOL(ieee80211_csa_finish);
2945

2946 2947
static int ieee80211_set_after_csa_beacon(struct ieee80211_sub_if_data *sdata,
					  u32 *changed)
2948
{
2949
	int err;
2950

2951 2952
	switch (sdata->vif.type) {
	case NL80211_IFTYPE_AP:
2953 2954
		err = ieee80211_assign_beacon(sdata, sdata->u.ap.next_beacon,
					      NULL);
2955 2956 2957
		kfree(sdata->u.ap.next_beacon);
		sdata->u.ap.next_beacon = NULL;

2958
		if (err < 0)
2959 2960
			return err;
		*changed |= err;
2961 2962
		break;
	case NL80211_IFTYPE_ADHOC:
2963 2964
		err = ieee80211_ibss_finish_csa(sdata);
		if (err < 0)
2965 2966
			return err;
		*changed |= err;
2967
		break;
2968 2969 2970 2971
#ifdef CONFIG_MAC80211_MESH
	case NL80211_IFTYPE_MESH_POINT:
		err = ieee80211_mesh_finish_csa(sdata);
		if (err < 0)
2972 2973
			return err;
		*changed |= err;
2974 2975
		break;
#endif
2976 2977
	default:
		WARN_ON(1);
2978 2979 2980 2981 2982 2983
		return -EINVAL;
	}

	return 0;
}

2984
static int __ieee80211_csa_finalize(struct ieee80211_sub_if_data *sdata)
2985 2986 2987 2988 2989 2990 2991
{
	struct ieee80211_local *local = sdata->local;
	u32 changed = 0;
	int err;

	sdata_assert_lock(sdata);
	lockdep_assert_held(&local->mtx);
2992
	lockdep_assert_held(&local->chanctx_mtx);
2993

2994 2995 2996 2997 2998 2999
	/*
	 * 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
	 */
3000

3001 3002 3003 3004 3005 3006 3007 3008 3009
	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;

3010
		return ieee80211_vif_use_reserved_context(sdata);
3011
	}
3012

3013 3014 3015 3016
	if (!cfg80211_chandef_identical(&sdata->vif.bss_conf.chandef,
					&sdata->csa_chandef))
		return -EINVAL;

3017 3018 3019 3020
	sdata->vif.csa_active = false;

	err = ieee80211_set_after_csa_beacon(sdata, &changed);
	if (err)
3021
		return err;
3022

3023
	ieee80211_bss_info_change_notify(sdata, changed);
3024

3025 3026 3027 3028 3029
	if (sdata->csa_block_tx) {
		ieee80211_wake_vif_queues(local, sdata,
					  IEEE80211_QUEUE_STOP_REASON_CSA);
		sdata->csa_block_tx = false;
	}
3030

3031 3032 3033 3034 3035 3036
	err = drv_post_channel_switch(sdata);
	if (err)
		return err;

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

3037 3038 3039 3040 3041 3042 3043 3044 3045 3046
	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);
	}
3047 3048 3049 3050 3051 3052 3053
}

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);
3054
	struct ieee80211_local *local = sdata->local;
3055 3056

	sdata_lock(sdata);
3057
	mutex_lock(&local->mtx);
3058
	mutex_lock(&local->chanctx_mtx);
3059

3060 3061 3062 3063 3064 3065 3066 3067
	/* 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);
3068 3069

unlock:
3070
	mutex_unlock(&local->chanctx_mtx);
3071
	mutex_unlock(&local->mtx);
3072
	sdata_unlock(sdata);
3073 3074
}

3075 3076 3077
static int ieee80211_set_csa_beacon(struct ieee80211_sub_if_data *sdata,
				    struct cfg80211_csa_settings *params,
				    u32 *changed)
3078
{
3079
	struct ieee80211_csa_settings csa = {};
3080
	int err;
3081 3082 3083

	switch (sdata->vif.type) {
	case NL80211_IFTYPE_AP:
3084 3085 3086 3087 3088
		sdata->u.ap.next_beacon =
			cfg80211_beacon_dup(&params->beacon_after);
		if (!sdata->u.ap.next_beacon)
			return -ENOMEM;

3089 3090 3091 3092 3093 3094 3095 3096 3097 3098 3099 3100 3101 3102 3103 3104 3105 3106 3107
		/*
		 * 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;

3108 3109 3110 3111 3112
		if ((params->n_counter_offsets_beacon >
		     IEEE80211_MAX_CSA_COUNTERS_NUM) ||
		    (params->n_counter_offsets_presp >
		     IEEE80211_MAX_CSA_COUNTERS_NUM))
			return -EINVAL;
3113

3114 3115 3116 3117 3118
		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;
3119

3120
		err = ieee80211_assign_beacon(sdata, &params->beacon_csa, &csa);
3121 3122 3123 3124
		if (err < 0) {
			kfree(sdata->u.ap.next_beacon);
			return err;
		}
3125
		*changed |= err;
3126

3127 3128 3129 3130 3131 3132 3133 3134 3135 3136 3137 3138 3139 3140 3141 3142 3143 3144 3145 3146 3147 3148 3149 3150 3151 3152 3153
		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;

3154 3155 3156 3157 3158
		/* see comments in the NL80211_IFTYPE_AP block */
		if (params->count > 1) {
			err = ieee80211_ibss_csa_beacon(sdata, params);
			if (err < 0)
				return err;
3159
			*changed |= err;
3160 3161 3162 3163
		}

		ieee80211_send_action_csa(sdata, params);

3164
		break;
3165
#ifdef CONFIG_MAC80211_MESH
3166 3167
	case NL80211_IFTYPE_MESH_POINT: {
		struct ieee80211_if_mesh *ifmsh = &sdata->u.mesh;
3168 3169 3170 3171 3172 3173 3174 3175 3176

		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;

3177
		if (ifmsh->csa_role == IEEE80211_MESH_CSA_ROLE_NONE) {
3178
			ifmsh->csa_role = IEEE80211_MESH_CSA_ROLE_INIT;
3179 3180 3181 3182 3183
			if (!ifmsh->pre_value)
				ifmsh->pre_value = 1;
			else
				ifmsh->pre_value++;
		}
3184

3185 3186 3187 3188 3189 3190 3191
		/* 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;
			}
3192
			*changed |= err;
3193
		}
3194 3195 3196 3197

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

3198
		break;
3199
		}
3200
#endif
3201 3202 3203 3204
	default:
		return -EOPNOTSUPP;
	}

3205 3206 3207
	return 0;
}

3208 3209 3210
static int
__ieee80211_channel_switch(struct wiphy *wiphy, struct net_device *dev,
			   struct cfg80211_csa_settings *params)
3211 3212 3213
{
	struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
	struct ieee80211_local *local = sdata->local;
3214
	struct ieee80211_channel_switch ch_switch;
3215
	struct ieee80211_chanctx_conf *conf;
3216
	struct ieee80211_chanctx *chanctx;
3217 3218
	u32 changed = 0;
	int err;
3219 3220

	sdata_assert_lock(sdata);
3221
	lockdep_assert_held(&local->mtx);
3222 3223 3224 3225 3226 3227 3228 3229 3230 3231 3232

	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;

3233 3234 3235 3236
	/* don't allow another channel switch if one is already active. */
	if (sdata->vif.csa_active)
		return -EBUSY;

3237 3238 3239 3240
	mutex_lock(&local->chanctx_mtx);
	conf = rcu_dereference_protected(sdata->vif.chanctx_conf,
					 lockdep_is_held(&local->chanctx_mtx));
	if (!conf) {
3241 3242
		err = -EBUSY;
		goto out;
3243 3244
	}

3245
	chanctx = container_of(conf, struct ieee80211_chanctx, conf);
3246 3247 3248
	if (!chanctx) {
		err = -EBUSY;
		goto out;
3249 3250
	}

3251 3252 3253 3254 3255 3256
	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;

3257 3258 3259 3260
	err = drv_pre_channel_switch(sdata, &ch_switch);
	if (err)
		goto out;

3261 3262 3263 3264 3265
	err = ieee80211_vif_reserve_chanctx(sdata, &params->chandef,
					    chanctx->mode,
					    params->radar_required);
	if (err)
		goto out;
3266

3267 3268 3269 3270 3271 3272
	/* 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;
	}
3273 3274

	err = ieee80211_set_csa_beacon(sdata, params, &changed);
3275 3276 3277 3278
	if (err) {
		ieee80211_vif_unreserve_chanctx(sdata);
		goto out;
	}
3279

3280
	sdata->csa_chandef = params->chandef;
3281
	sdata->csa_block_tx = params->block_tx;
3282 3283
	sdata->vif.csa_active = true;

3284
	if (sdata->csa_block_tx)
3285 3286
		ieee80211_stop_vif_queues(local, sdata,
					  IEEE80211_QUEUE_STOP_REASON_CSA);
3287

3288 3289 3290
	cfg80211_ch_switch_started_notify(sdata->dev, &sdata->csa_chandef,
					  params->count);

3291 3292 3293 3294 3295 3296 3297
	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);
	}
3298

3299 3300 3301
out:
	mutex_unlock(&local->chanctx_mtx);
	return err;
3302 3303
}

3304 3305 3306 3307 3308 3309 3310 3311 3312 3313 3314 3315 3316 3317
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;
}

3318
static int ieee80211_mgmt_tx(struct wiphy *wiphy, struct wireless_dev *wdev,
3319 3320
			     struct cfg80211_mgmt_tx_params *params,
			     u64 *cookie)
3321
{
3322
	struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
3323 3324 3325
	struct ieee80211_local *local = sdata->local;
	struct sk_buff *skb;
	struct sta_info *sta;
3326
	const struct ieee80211_mgmt *mgmt = (void *)params->buf;
3327
	bool need_offchan = false;
3328
	u32 flags;
3329
	int ret;
3330
	u8 *data;
3331

3332
	if (params->dont_wait_for_ack)
3333 3334 3335 3336 3337
		flags = IEEE80211_TX_CTL_NO_ACK;
	else
		flags = IEEE80211_TX_INTFL_NL80211_FRAME_TX |
			IEEE80211_TX_CTL_REQ_TX_STATUS;

3338
	if (params->no_cck)
3339 3340
		flags |= IEEE80211_TX_CTL_NO_CCK_RATE;

3341 3342
	switch (sdata->vif.type) {
	case NL80211_IFTYPE_ADHOC:
3343 3344 3345 3346 3347 3348 3349 3350 3351 3352
		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
3353 3354 3355
	case NL80211_IFTYPE_AP:
	case NL80211_IFTYPE_AP_VLAN:
	case NL80211_IFTYPE_P2P_GO:
3356 3357 3358 3359
		if (sdata->vif.type != NL80211_IFTYPE_ADHOC &&
		    !ieee80211_vif_is_mesh(&sdata->vif) &&
		    !rcu_access_pointer(sdata->bss->beacon))
			need_offchan = true;
3360
		if (!ieee80211_is_action(mgmt->frame_control) ||
3361
		    mgmt->u.action.category == WLAN_CATEGORY_PUBLIC ||
3362 3363
		    mgmt->u.action.category == WLAN_CATEGORY_SELF_PROTECTED ||
		    mgmt->u.action.category == WLAN_CATEGORY_SPECTRUM_MGMT)
3364 3365 3366 3367 3368 3369 3370 3371
			break;
		rcu_read_lock();
		sta = sta_info_get(sdata, mgmt->da);
		rcu_read_unlock();
		if (!sta)
			return -ENOLINK;
		break;
	case NL80211_IFTYPE_STATION:
3372
	case NL80211_IFTYPE_P2P_CLIENT:
3373 3374 3375 3376 3377 3378
		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)))
3379
			need_offchan = true;
3380
		sdata_unlock(sdata);
3381
		break;
3382 3383 3384
	case NL80211_IFTYPE_P2P_DEVICE:
		need_offchan = true;
		break;
3385 3386 3387 3388
	default:
		return -EOPNOTSUPP;
	}

3389 3390 3391
	/* configurations requiring offchan cannot work if no channel has been
	 * specified
	 */
3392
	if (need_offchan && !params->chan)
3393 3394
		return -EINVAL;

3395 3396 3397 3398
	mutex_lock(&local->mtx);

	/* Check if the operating channel is the requested channel */
	if (!need_offchan) {
J
Johannes Berg 已提交
3399 3400 3401 3402 3403
		struct ieee80211_chanctx_conf *chanctx_conf;

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

3404
		if (chanctx_conf) {
3405 3406 3407 3408
			need_offchan = params->chan &&
				       (params->chan !=
					chanctx_conf->def.chan);
		} else if (!params->chan) {
3409 3410 3411 3412
			ret = -EINVAL;
			rcu_read_unlock();
			goto out_unlock;
		} else {
3413
			need_offchan = true;
3414
		}
J
Johannes Berg 已提交
3415
		rcu_read_unlock();
3416 3417
	}

3418
	if (need_offchan && !params->offchan) {
3419 3420 3421 3422
		ret = -EBUSY;
		goto out_unlock;
	}

3423
	skb = dev_alloc_skb(local->hw.extra_tx_headroom + params->len);
3424 3425 3426 3427
	if (!skb) {
		ret = -ENOMEM;
		goto out_unlock;
	}
3428 3429
	skb_reserve(skb, local->hw.extra_tx_headroom);

3430 3431 3432 3433 3434 3435 3436 3437 3438
	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;
3439
		struct beacon_data *beacon = NULL;
3440

3441 3442 3443 3444 3445 3446 3447 3448 3449 3450 3451 3452 3453 3454 3455
		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();
3456
	}
3457 3458 3459 3460 3461

	IEEE80211_SKB_CB(skb)->flags = flags;

	skb->dev = sdata->dev;

3462
	if (!need_offchan) {
3463
		*cookie = (unsigned long) skb;
3464
		ieee80211_tx_skb(sdata, skb);
3465 3466
		ret = 0;
		goto out_unlock;
3467 3468
	}

3469 3470
	IEEE80211_SKB_CB(skb)->flags |= IEEE80211_TX_CTL_TX_OFFCHAN |
					IEEE80211_TX_INTFL_OFFCHAN_TX_OK;
3471 3472 3473
	if (local->hw.flags & IEEE80211_HW_QUEUE_CONTROL)
		IEEE80211_SKB_CB(skb)->hw_queue =
			local->hw.offchannel_tx_hw_queue;
3474

3475
	/* This will handle all kinds of coalescing and immediate TX */
3476 3477
	ret = ieee80211_start_roc_work(local, sdata, params->chan,
				       params->wait, cookie, skb,
3478
				       IEEE80211_ROC_TYPE_MGMT_TX);
3479 3480 3481 3482 3483
	if (ret)
		kfree_skb(skb);
 out_unlock:
	mutex_unlock(&local->mtx);
	return ret;
3484 3485
}

3486
static int ieee80211_mgmt_tx_cancel_wait(struct wiphy *wiphy,
3487
					 struct wireless_dev *wdev,
3488 3489
					 u64 cookie)
{
3490
	struct ieee80211_local *local = wiphy_priv(wiphy);
3491

3492
	return ieee80211_cancel_roc(local, cookie, true);
3493 3494
}

3495
static void ieee80211_mgmt_frame_register(struct wiphy *wiphy,
3496
					  struct wireless_dev *wdev,
3497 3498 3499 3500
					  u16 frame_type, bool reg)
{
	struct ieee80211_local *local = wiphy_priv(wiphy);

3501 3502 3503 3504 3505 3506
	switch (frame_type) {
	case IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_PROBE_REQ:
		if (reg)
			local->probe_req_reg++;
		else
			local->probe_req_reg--;
3507

3508 3509 3510
		if (!local->open_count)
			break;

3511 3512 3513 3514 3515
		ieee80211_queue_work(&local->hw, &local->reconfig_filter);
		break;
	default:
		break;
	}
3516 3517
}

3518 3519 3520 3521 3522 3523 3524 3525 3526 3527 3528 3529 3530 3531 3532 3533 3534
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);
}

3535 3536 3537 3538 3539 3540 3541 3542 3543 3544 3545 3546 3547 3548 3549
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
3550 3551 3552 3553 3554 3555 3556 3557 3558 3559 3560 3561
static int ieee80211_probe_client(struct wiphy *wiphy, struct net_device *dev,
				  const u8 *peer, u64 *cookie)
{
	struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
	struct ieee80211_local *local = sdata->local;
	struct ieee80211_qos_hdr *nullfunc;
	struct sk_buff *skb;
	int size = sizeof(*nullfunc);
	__le16 fc;
	bool qos;
	struct ieee80211_tx_info *info;
	struct sta_info *sta;
J
Johannes Berg 已提交
3562 3563
	struct ieee80211_chanctx_conf *chanctx_conf;
	enum ieee80211_band band;
J
Johannes Berg 已提交
3564 3565

	rcu_read_lock();
J
Johannes Berg 已提交
3566 3567 3568 3569 3570
	chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf);
	if (WARN_ON(!chanctx_conf)) {
		rcu_read_unlock();
		return -EINVAL;
	}
3571
	band = chanctx_conf->def.chan->band;
3572
	sta = sta_info_get_bss(sdata, peer);
3573
	if (sta) {
3574
		qos = sta->sta.wme;
3575 3576
	} else {
		rcu_read_unlock();
J
Johannes Berg 已提交
3577
		return -ENOLINK;
3578
	}
J
Johannes Berg 已提交
3579 3580 3581 3582 3583 3584 3585 3586 3587 3588 3589 3590 3591

	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
3592 3593
	if (!skb) {
		rcu_read_unlock();
J
Johannes Berg 已提交
3594
		return -ENOMEM;
J
Johannes Berg 已提交
3595
	}
J
Johannes Berg 已提交
3596 3597 3598 3599 3600 3601 3602 3603 3604 3605 3606 3607 3608 3609 3610 3611 3612

	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;
3613
	info->band = band;
J
Johannes Berg 已提交
3614 3615 3616 3617 3618 3619 3620

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

	local_bh_disable();
3621
	ieee80211_xmit(sdata, sta, skb);
J
Johannes Berg 已提交
3622
	local_bh_enable();
J
Johannes Berg 已提交
3623
	rcu_read_unlock();
J
Johannes Berg 已提交
3624 3625 3626 3627 3628

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

3629 3630 3631
static int ieee80211_cfg_get_channel(struct wiphy *wiphy,
				     struct wireless_dev *wdev,
				     struct cfg80211_chan_def *chandef)
3632
{
J
Johannes Berg 已提交
3633
	struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
3634
	struct ieee80211_local *local = wiphy_priv(wiphy);
J
Johannes Berg 已提交
3635
	struct ieee80211_chanctx_conf *chanctx_conf;
3636
	int ret = -ENODATA;
J
Johannes Berg 已提交
3637 3638

	rcu_read_lock();
3639 3640
	chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf);
	if (chanctx_conf) {
3641
		*chandef = sdata->vif.bss_conf.chandef;
3642 3643 3644 3645 3646 3647 3648
		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
3649
			*chandef = local->_oper_chandef;
3650
		ret = 0;
J
Johannes Berg 已提交
3651 3652
	}
	rcu_read_unlock();
3653

3654
	return ret;
3655 3656
}

3657 3658 3659 3660 3661 3662 3663
#ifdef CONFIG_PM
static void ieee80211_set_wakeup(struct wiphy *wiphy, bool enabled)
{
	drv_set_wakeup(wiphy_priv(wiphy), enabled);
}
#endif

3664 3665 3666 3667 3668 3669 3670 3671 3672 3673 3674 3675 3676 3677 3678 3679 3680
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;
	}

3681
	old_qos_map = sdata_dereference(sdata->qos_map, sdata);
3682 3683 3684 3685 3686 3687 3688
	rcu_assign_pointer(sdata->qos_map, new_qos_map);
	if (old_qos_map)
		kfree_rcu(old_qos_map, rcu_head);

	return 0;
}

3689 3690 3691 3692 3693 3694 3695 3696 3697 3698 3699 3700 3701 3702 3703
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;
}

3704 3705 3706 3707 3708 3709 3710 3711 3712 3713 3714 3715 3716 3717 3718 3719 3720 3721 3722 3723 3724 3725 3726 3727 3728 3729 3730 3731 3732 3733 3734 3735 3736 3737 3738 3739 3740 3741 3742 3743 3744 3745 3746 3747 3748 3749 3750 3751 3752 3753 3754 3755
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();
3756
		ieee80211_flush_queues(local, sdata, false);
3757 3758 3759 3760 3761 3762 3763 3764 3765 3766 3767 3768 3769 3770 3771 3772 3773

		/* 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;
}

3774
const struct cfg80211_ops mac80211_config_ops = {
3775 3776
	.add_virtual_intf = ieee80211_add_iface,
	.del_virtual_intf = ieee80211_del_iface,
3777
	.change_virtual_intf = ieee80211_change_iface,
3778 3779
	.start_p2p_device = ieee80211_start_p2p_device,
	.stop_p2p_device = ieee80211_stop_p2p_device,
3780 3781
	.add_key = ieee80211_add_key,
	.del_key = ieee80211_del_key,
3782
	.get_key = ieee80211_get_key,
3783
	.set_default_key = ieee80211_config_default_key,
3784
	.set_default_mgmt_key = ieee80211_config_default_mgmt_key,
3785 3786 3787
	.start_ap = ieee80211_start_ap,
	.change_beacon = ieee80211_change_beacon,
	.stop_ap = ieee80211_stop_ap,
3788 3789 3790
	.add_station = ieee80211_add_station,
	.del_station = ieee80211_del_station,
	.change_station = ieee80211_change_station,
3791
	.get_station = ieee80211_get_station,
3792
	.dump_station = ieee80211_dump_station,
3793
	.dump_survey = ieee80211_dump_survey,
3794 3795 3796 3797 3798 3799
#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,
3800 3801
	.get_mpp = ieee80211_get_mpp,
	.dump_mpp = ieee80211_dump_mpp,
3802 3803
	.update_mesh_config = ieee80211_update_mesh_config,
	.get_mesh_config = ieee80211_get_mesh_config,
3804 3805
	.join_mesh = ieee80211_join_mesh,
	.leave_mesh = ieee80211_leave_mesh,
3806
#endif
3807 3808
	.join_ocb = ieee80211_join_ocb,
	.leave_ocb = ieee80211_leave_ocb,
3809
	.change_bss = ieee80211_change_bss,
3810
	.set_txq_params = ieee80211_set_txq_params,
3811
	.set_monitor_channel = ieee80211_set_monitor_channel,
3812 3813
	.suspend = ieee80211_suspend,
	.resume = ieee80211_resume,
3814
	.scan = ieee80211_scan,
3815 3816
	.sched_scan_start = ieee80211_sched_scan_start,
	.sched_scan_stop = ieee80211_sched_scan_stop,
3817 3818 3819 3820
	.auth = ieee80211_auth,
	.assoc = ieee80211_assoc,
	.deauth = ieee80211_deauth,
	.disassoc = ieee80211_disassoc,
3821 3822
	.join_ibss = ieee80211_join_ibss,
	.leave_ibss = ieee80211_leave_ibss,
3823
	.set_mcast_rate = ieee80211_set_mcast_rate,
3824
	.set_wiphy_params = ieee80211_set_wiphy_params,
3825 3826
	.set_tx_power = ieee80211_set_tx_power,
	.get_tx_power = ieee80211_get_tx_power,
J
Johannes Berg 已提交
3827
	.set_wds_peer = ieee80211_set_wds_peer,
J
Johannes Berg 已提交
3828
	.rfkill_poll = ieee80211_rfkill_poll,
3829
	CFG80211_TESTMODE_CMD(ieee80211_testmode_cmd)
W
Wey-Yi Guy 已提交
3830
	CFG80211_TESTMODE_DUMP(ieee80211_testmode_dump)
J
Johannes Berg 已提交
3831
	.set_power_mgmt = ieee80211_set_power_mgmt,
J
Johannes Berg 已提交
3832
	.set_bitrate_mask = ieee80211_set_bitrate_mask,
3833 3834
	.remain_on_channel = ieee80211_remain_on_channel,
	.cancel_remain_on_channel = ieee80211_cancel_remain_on_channel,
3835
	.mgmt_tx = ieee80211_mgmt_tx,
3836
	.mgmt_tx_cancel_wait = ieee80211_mgmt_tx_cancel_wait,
3837
	.set_cqm_rssi_config = ieee80211_set_cqm_rssi_config,
3838
	.mgmt_frame_register = ieee80211_mgmt_frame_register,
3839 3840
	.set_antenna = ieee80211_set_antenna,
	.get_antenna = ieee80211_get_antenna,
3841
	.set_rekey_data = ieee80211_set_rekey_data,
3842 3843
	.tdls_oper = ieee80211_tdls_oper,
	.tdls_mgmt = ieee80211_tdls_mgmt,
3844 3845
	.tdls_channel_switch = ieee80211_tdls_channel_switch,
	.tdls_cancel_channel_switch = ieee80211_tdls_cancel_channel_switch,
J
Johannes Berg 已提交
3846
	.probe_client = ieee80211_probe_client,
3847
	.set_noack_map = ieee80211_set_noack_map,
3848 3849 3850
#ifdef CONFIG_PM
	.set_wakeup = ieee80211_set_wakeup,
#endif
3851
	.get_channel = ieee80211_cfg_get_channel,
3852
	.start_radar_detection = ieee80211_start_radar_detection,
3853
	.channel_switch = ieee80211_channel_switch,
3854
	.set_qos_map = ieee80211_set_qos_map,
3855
	.set_ap_chanwidth = ieee80211_set_ap_chanwidth,
3856 3857
	.add_tx_ts = ieee80211_add_tx_ts,
	.del_tx_ts = ieee80211_del_tx_ts,
3858
};