text: /*
   * mac80211 configuration hooks for cfg80211
   *
   * Copyright 2006-2010	Johannes Berg <johannes@sipsolutions.net>
   *
   * This file is GPLv2 as found in COPYING.
   * TID_SLEEPING PATCH 2015 Sven Zehl zehl@tkn.tu-berlin.de
   */
  
  #include <linux/ieee80211.h>
  #include <linux/nl80211.h>
  #include <linux/rtnetlink.h>
  #include <linux/slab.h>
  #include <net/net_namespace.h>
  #include <linux/rcupdate.h>
  #include <linux/if_ether.h>
  #include <net/cfg80211.h>
  #include "ieee80211_i.h"
  #include "driver-ops.h"
  #include "cfg.h"
  #include "rate.h"
  #include "mesh.h"
  
  static struct wireless_dev *ieee80211_add_iface(struct wiphy *wiphy,
  						const char *name,
  						enum nl80211_iftype type,
  						u32 *flags,
  						struct vif_params *params)
  {
  	struct ieee80211_local *local = wiphy_priv(wiphy);
  	struct wireless_dev *wdev;
  	struct ieee80211_sub_if_data *sdata;
  	int err;
  
  	err = ieee80211_if_add(local, name, &wdev, type, params);
  	if (err)
  		return ERR_PTR(err);
  
  	if (type == NL80211_IFTYPE_MONITOR && flags) {
  		sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
  		sdata->u.mntr_flags = *flags;
  	}
  
  	return wdev;
  }
  
  static int ieee80211_del_iface(struct wiphy *wiphy, struct wireless_dev *wdev)
  {
  	ieee80211_if_remove(IEEE80211_WDEV_TO_SUB_IF(wdev));
  
  	return 0;
  }
  
  static int ieee80211_change_iface(struct wiphy *wiphy,
  				  struct net_device *dev,
  				  enum nl80211_iftype type, u32 *flags,
  				  struct vif_params *params)
  {
  	struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
  	int ret;
  
  	ret = ieee80211_if_change_type(sdata, type);
  	if (ret)
  		return ret;
  
  	if (type == NL80211_IFTYPE_AP_VLAN &&
  	    params && params->use_4addr == 0)
  		RCU_INIT_POINTER(sdata->u.vlan.sta, NULL);
  	else if (type == NL80211_IFTYPE_STATION &&
  		 params && params->use_4addr >= 0)
  		sdata->u.mgd.use_4addr = params->use_4addr;
  
  	if (sdata->vif.type == NL80211_IFTYPE_MONITOR && flags) {
  		struct ieee80211_local *local = sdata->local;
  
  		if (ieee80211_sdata_running(sdata)) {
  			u32 mask = MONITOR_FLAG_COOK_FRAMES |
  				   MONITOR_FLAG_ACTIVE;
  
  			/*
  			 * Prohibit MONITOR_FLAG_COOK_FRAMES and
  			 * MONITOR_FLAG_ACTIVE to be changed while the
  			 * interface is up.
  			 * Else we would need to add a lot of cruft
  			 * to update everything:
  			 *	cooked_mntrs, monitor and all fif_* counters
  			 *	reconfigure hardware
  			 */
  			if ((*flags & mask) != (sdata->u.mntr_flags & mask))
  				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;
  		}
  	}
  
  	return 0;
  }
  
  static int ieee80211_start_p2p_device(struct wiphy *wiphy,
  				      struct wireless_dev *wdev)
  {
  	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));
  }
  
  static int ieee80211_set_noack_map(struct wiphy *wiphy,
  				  struct net_device *dev,
  				  u16 noack_map)
  {
  	struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
  
  	sdata->noack_map = noack_map;
  	return 0;
  }
  
  static int ieee80211_add_key(struct wiphy *wiphy, struct net_device *dev,
  			     u8 key_idx, bool pairwise, const u8 *mac_addr,
  			     struct key_params *params)
  {
  	struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
  	struct sta_info *sta = NULL;
  	struct ieee80211_key *key;
  	int err;
  
  	if (!ieee80211_sdata_running(sdata))
  		return -ENETDOWN;
  
  	/* reject WEP and TKIP keys if WEP failed to initialize */
  	switch (params->cipher) {
  	case WLAN_CIPHER_SUITE_WEP40:
  	case WLAN_CIPHER_SUITE_TKIP:
  	case WLAN_CIPHER_SUITE_WEP104:
  		if (IS_ERR(sdata->local->wep_tx_tfm))
  			return -EINVAL;
  		break;
  	default:
  		break;
  	}
  
  	key = ieee80211_key_alloc(params->cipher, key_idx, params->key_len,
  				  params->key, params->seq_len, params->seq);
  	if (IS_ERR(key))
  		return PTR_ERR(key);
  
  	if (pairwise)
  		key->conf.flags |= IEEE80211_KEY_FLAG_PAIRWISE;
  
  	mutex_lock(&sdata->local->sta_mtx);
  
  	if (mac_addr) {
  		if (ieee80211_vif_is_mesh(&sdata->vif))
  			sta = sta_info_get(sdata, mac_addr);
  		else
  			sta = sta_info_get_bss(sdata, mac_addr);
  		/*
  		 * The ASSOC test makes sure the driver is ready to
  		 * receive the key. When wpa_supplicant has roamed
  		 * using FT, it attempts to set the key before
  		 * association has completed, this rejects that attempt
  		 * so it will set the key again after assocation.
  		 *
  		 * TODO: accept the key if we have a station entry and
  		 *       add it to the device after the station.
  		 */
  		if (!sta || !test_sta_flag(sta, WLAN_STA_ASSOC)) {
  			ieee80211_key_free_unused(key);
  			err = -ENOENT;
  			goto out_unlock;
  		}
  	}
  
  	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 CPTCFG_MAC80211_MESH
  		if (sdata->u.mesh.security != IEEE80211_MESH_SEC_NONE)
  			key->conf.flags |= IEEE80211_KEY_FLAG_RX_MGMT;
  		break;
  #endif
  	case NL80211_IFTYPE_WDS:
  	case NL80211_IFTYPE_MONITOR:
  	case NL80211_IFTYPE_P2P_DEVICE:
  	case NL80211_IFTYPE_UNSPECIFIED:
  	case NUM_NL80211_IFTYPES:
  	case NL80211_IFTYPE_P2P_CLIENT:
  	case NL80211_IFTYPE_P2P_GO:
  		/* shouldn't happen */
  		WARN_ON_ONCE(1);
  		break;
  	}
  
  	err = ieee80211_key_link(key, sdata, sta);
  
   out_unlock:
  	mutex_unlock(&sdata->local->sta_mtx);
  
  	return err;
  }
  
  static int ieee80211_del_key(struct wiphy *wiphy, struct net_device *dev,
  			     u8 key_idx, bool pairwise, const u8 *mac_addr)
  {
  	struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
  	struct ieee80211_local *local = sdata->local;
  	struct sta_info *sta;
  	struct ieee80211_key *key = NULL;
  	int ret;
  
  	mutex_lock(&local->sta_mtx);
  	mutex_lock(&local->key_mtx);
  
  	if (mac_addr) {
  		ret = -ENOENT;
  
  		sta = sta_info_get_bss(sdata, mac_addr);
  		if (!sta)
  			goto out_unlock;
  
  		if (pairwise)
  			key = key_mtx_dereference(local, sta->ptk);
  		else
  			key = key_mtx_dereference(local, sta->gtk[key_idx]);
  	} else
  		key = key_mtx_dereference(local, sdata->keys[key_idx]);
  
  	if (!key) {
  		ret = -ENOENT;
  		goto out_unlock;
  	}
  
  	ieee80211_key_free(key, true);
  
  	ret = 0;
   out_unlock:
  	mutex_unlock(&local->key_mtx);
  	mutex_unlock(&local->sta_mtx);
  
  	return ret;
  }
  
  static int ieee80211_get_key(struct wiphy *wiphy, struct net_device *dev,
  			     u8 key_idx, bool pairwise, const u8 *mac_addr,
  			     void *cookie,
  			     void (*callback)(void *cookie,
  					      struct key_params *params))
  {
  	struct ieee80211_sub_if_data *sdata;
  	struct sta_info *sta = NULL;
  	u8 seq[6] = {0};
  	struct key_params params;
  	struct ieee80211_key *key = NULL;
  	u64 pn64;
  	u32 iv32;
  	u16 iv16;
  	int err = -ENOENT;
  
  	sdata = IEEE80211_DEV_TO_SUB_IF(dev);
  
  	rcu_read_lock();
  
  	if (mac_addr) {
  		sta = sta_info_get_bss(sdata, mac_addr);
  		if (!sta)
  			goto out;
  
  		if (pairwise)
  			key = rcu_dereference(sta->ptk);
  		else if (key_idx < NUM_DEFAULT_KEYS)
  			key = rcu_dereference(sta->gtk[key_idx]);
  	} else
  		key = rcu_dereference(sdata->keys[key_idx]);
  
  	if (!key)
  		goto out;
  
  	memset(&params, 0, sizeof(params));
  
  	params.cipher = key->conf.cipher;
  
  	switch (key->conf.cipher) {
  	case WLAN_CIPHER_SUITE_TKIP:
  		iv32 = key->u.tkip.tx.iv32;
  		iv16 = key->u.tkip.tx.iv16;
  
  		if (key->flags & KEY_FLAG_UPLOADED_TO_HARDWARE)
  			drv_get_tkip_seq(sdata->local,
  					 key->conf.hw_key_idx,
  					 &iv32, &iv16);
  
  		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;
  	case WLAN_CIPHER_SUITE_CCMP:
  		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;
  		params.seq = seq;
  		params.seq_len = 6;
  		break;
  	case WLAN_CIPHER_SUITE_AES_CMAC:
  		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;
  		params.seq = seq;
  		params.seq_len = 6;
  		break;
  	}
  
  	params.key = key->conf.key;
  	params.key_len = key->conf.keylen;
  
  	callback(cookie, &params);
  	err = 0;
  
   out:
  	rcu_read_unlock();
  	return err;
  }
  
  static int ieee80211_config_default_key(struct wiphy *wiphy,
  					struct net_device *dev,
  					u8 key_idx, bool uni,
  					bool multi)
  {
  	struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
  
  	ieee80211_set_default_key(sdata, key_idx, uni, multi);
  
  	return 0;
  }
  
  static int ieee80211_config_default_mgmt_key(struct wiphy *wiphy,
  					     struct net_device *dev,
  					     u8 key_idx)
  {
  	struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
  
  	ieee80211_set_default_mgmt_key(sdata, key_idx);
  
  	return 0;
  }
  
  void sta_set_rate_info_tx(struct sta_info *sta,
  			  const struct ieee80211_tx_rate *rate,
  			  struct rate_info *rinfo)
  {
  	rinfo->flags = 0;
  	if (rate->flags & IEEE80211_TX_RC_MCS) {
  		rinfo->flags |= RATE_INFO_FLAGS_MCS;
  		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;
  		int shift = ieee80211_vif_get_shift(&sta->sdata->vif);
  		u16 brate;
  
  		sband = sta->local->hw.wiphy->bands[
  				ieee80211_get_sdata_band(sta->sdata)];
  		brate = sband->bitrates[rate->idx].bitrate;
  		rinfo->legacy = DIV_ROUND_UP(brate, 1 << shift);
  	}
  	if (rate->flags & IEEE80211_TX_RC_40_MHZ_WIDTH)
  		rinfo->flags |= RATE_INFO_FLAGS_40_MHZ_WIDTH;
  	if (rate->flags & IEEE80211_TX_RC_80_MHZ_WIDTH)
  		rinfo->flags |= RATE_INFO_FLAGS_80_MHZ_WIDTH;
  	if (rate->flags & IEEE80211_TX_RC_160_MHZ_WIDTH)
  		rinfo->flags |= RATE_INFO_FLAGS_160_MHZ_WIDTH;
  	if (rate->flags & IEEE80211_TX_RC_SHORT_GI)
  		rinfo->flags |= RATE_INFO_FLAGS_SHORT_GI;
  }
  
  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;
  		int shift = ieee80211_vif_get_shift(&sta->sdata->vif);
  		u16 brate;
  
  		sband = sta->local->hw.wiphy->bands[
  				ieee80211_get_sdata_band(sta->sdata)];
  		brate = sband->bitrates[sta->last_rx_rate_idx].bitrate;
  		rinfo->legacy = DIV_ROUND_UP(brate, 1 << shift);
  	}
  
  	if (sta->last_rx_rate_flag & RX_FLAG_40MHZ)
  		rinfo->flags |= RATE_INFO_FLAGS_40_MHZ_WIDTH;
  	if (sta->last_rx_rate_flag & RX_FLAG_SHORT_GI)
  		rinfo->flags |= RATE_INFO_FLAGS_SHORT_GI;
  	if (sta->last_rx_rate_flag & RX_FLAG_80MHZ)
  		rinfo->flags |= RATE_INFO_FLAGS_80_MHZ_WIDTH;
  	if (sta->last_rx_rate_flag & RX_FLAG_80P80MHZ)
  		rinfo->flags |= RATE_INFO_FLAGS_80P80_MHZ_WIDTH;
  	if (sta->last_rx_rate_flag & RX_FLAG_160MHZ)
  		rinfo->flags |= RATE_INFO_FLAGS_160_MHZ_WIDTH;
  }
  
  static void sta_set_sinfo(struct sta_info *sta, struct station_info *sinfo)
  {
  	struct ieee80211_sub_if_data *sdata = sta->sdata;
  	struct ieee80211_local *local = sdata->local;
  	struct timespec uptime;
  	u64 packets = 0;
  	int i, ac;
  
  	sinfo->generation = sdata->local->sta_generation;
  
  	sinfo->filled = STATION_INFO_INACTIVE_TIME |
  			STATION_INFO_RX_BYTES64 |
  			STATION_INFO_TX_BYTES64 |
  			STATION_INFO_RX_PACKETS |
  			STATION_INFO_TX_PACKETS |
  			STATION_INFO_TX_RETRIES |
  			STATION_INFO_TX_FAILED |
  			STATION_INFO_TX_BITRATE |
  			STATION_INFO_RX_BITRATE |
  			STATION_INFO_RX_DROP_MISC |
  			STATION_INFO_BSS_PARAM |
  			STATION_INFO_CONNECTED_TIME |
  			STATION_INFO_STA_FLAGS |
  			STATION_INFO_BEACON_LOSS_COUNT;
  
  	do_posix_clock_monotonic_gettime(&uptime);
  	sinfo->connected_time = uptime.tv_sec - sta->last_connected;
  
  	sinfo->inactive_time = jiffies_to_msecs(jiffies - sta->last_rx);
  	sinfo->tx_bytes = 0;
  	for (ac = 0; ac < IEEE80211_NUM_ACS; ac++) {
  		sinfo->tx_bytes += sta->tx_bytes[ac];
  		packets += sta->tx_packets[ac];
  	}
  	sinfo->tx_packets = packets;
  	sinfo->rx_bytes = sta->rx_bytes;
  	sinfo->rx_packets = sta->rx_packets;
  	sinfo->tx_retries = sta->tx_retry_count;
  	sinfo->tx_failed = sta->tx_retry_failed;
  	sinfo->rx_dropped_misc = sta->rx_dropped;
  	sinfo->beacon_loss_count = sta->beacon_loss_count;
  
  	if ((sta->local->hw.flags & IEEE80211_HW_SIGNAL_DBM) ||
  	    (sta->local->hw.flags & IEEE80211_HW_SIGNAL_UNSPEC)) {
  		sinfo->filled |= STATION_INFO_SIGNAL | STATION_INFO_SIGNAL_AVG;
  		if (!local->ops->get_rssi ||
  		    drv_get_rssi(local, sdata, &sta->sta, &sinfo->signal))
  			sinfo->signal = (s8)sta->last_signal;
  		sinfo->signal_avg = (s8) -ewma_read(&sta->avg_signal);
  	}
  	if (sta->chains) {
  		sinfo->filled |= STATION_INFO_CHAIN_SIGNAL |
  				 STATION_INFO_CHAIN_SIGNAL_AVG;
  
  		sinfo->chains = sta->chains;
  		for (i = 0; i < ARRAY_SIZE(sinfo->chain_signal); i++) {
  			sinfo->chain_signal[i] = sta->chain_signal_last[i];
  			sinfo->chain_signal_avg[i] =
  				(s8) -ewma_read(&sta->chain_signal_avg[i]);
  		}
  	}
  
  	sta_set_rate_info_tx(sta, &sta->last_tx_rate, &sinfo->txrate);
  	sta_set_rate_info_rx(sta, &sinfo->rxrate);
  
  	if (ieee80211_vif_is_mesh(&sdata->vif)) {
  #ifdef CPTCFG_MAC80211_MESH
  		sinfo->filled |= STATION_INFO_LLID |
  				 STATION_INFO_PLID |
  				 STATION_INFO_PLINK_STATE |
  				 STATION_INFO_LOCAL_PM |
  				 STATION_INFO_PEER_PM |
  				 STATION_INFO_NONPEER_PM;
  
  		sinfo->llid = le16_to_cpu(sta->llid);
  		sinfo->plid = le16_to_cpu(sta->plid);
  		sinfo->plink_state = sta->plink_state;
  		if (test_sta_flag(sta, WLAN_STA_TOFFSET_KNOWN)) {
  			sinfo->filled |= STATION_INFO_T_OFFSET;
  			sinfo->t_offset = sta->t_offset;
  		}
  		sinfo->local_pm = sta->local_pm;
  		sinfo->peer_pm = sta->peer_pm;
  		sinfo->nonpeer_pm = sta->nonpeer_pm;
  #endif
  	}
  
  	sinfo->bss_param.flags = 0;
  	if (sdata->vif.bss_conf.use_cts_prot)
  		sinfo->bss_param.flags |= BSS_PARAM_FLAGS_CTS_PROT;
  	if (sdata->vif.bss_conf.use_short_preamble)
  		sinfo->bss_param.flags |= BSS_PARAM_FLAGS_SHORT_PREAMBLE;
  	if (sdata->vif.bss_conf.use_short_slot)
  		sinfo->bss_param.flags |= BSS_PARAM_FLAGS_SHORT_SLOT_TIME;
  	sinfo->bss_param.dtim_period = sdata->local->hw.conf.ps_dtim_period;
  	sinfo->bss_param.beacon_interval = sdata->vif.bss_conf.beacon_int;
  
  	sinfo->sta_flags.set = 0;
  	sinfo->sta_flags.mask = BIT(NL80211_STA_FLAG_AUTHORIZED) |
  				BIT(NL80211_STA_FLAG_SHORT_PREAMBLE) |
  				BIT(NL80211_STA_FLAG_WME) |
  				BIT(NL80211_STA_FLAG_MFP) |
  				BIT(NL80211_STA_FLAG_AUTHENTICATED) |
  				BIT(NL80211_STA_FLAG_ASSOCIATED) |
  				BIT(NL80211_STA_FLAG_TDLS_PEER);
  	if (test_sta_flag(sta, WLAN_STA_AUTHORIZED))
  		sinfo->sta_flags.set |= BIT(NL80211_STA_FLAG_AUTHORIZED);
  	if (test_sta_flag(sta, WLAN_STA_SHORT_PREAMBLE))
  		sinfo->sta_flags.set |= BIT(NL80211_STA_FLAG_SHORT_PREAMBLE);
  	if (test_sta_flag(sta, WLAN_STA_WME))
  		sinfo->sta_flags.set |= BIT(NL80211_STA_FLAG_WME);
  	if (test_sta_flag(sta, WLAN_STA_MFP))
  		sinfo->sta_flags.set |= BIT(NL80211_STA_FLAG_MFP);
  	if (test_sta_flag(sta, WLAN_STA_AUTH))
  		sinfo->sta_flags.set |= BIT(NL80211_STA_FLAG_AUTHENTICATED);
  	if (test_sta_flag(sta, WLAN_STA_ASSOC))
  		sinfo->sta_flags.set |= BIT(NL80211_STA_FLAG_ASSOCIATED);
  	if (test_sta_flag(sta, WLAN_STA_TDLS_PEER))
  		sinfo->sta_flags.set |= BIT(NL80211_STA_FLAG_TDLS_PEER);
  }
  
  static const char ieee80211_gstrings_sta_stats[][ETH_GSTRING_LEN] = {
  	"rx_packets", "rx_bytes", "wep_weak_iv_count",
  	"rx_duplicates", "rx_fragments", "rx_dropped",
  	"tx_packets", "tx_bytes", "tx_fragments",
  	"tx_filtered", "tx_retry_failed", "tx_retries",
  	"beacon_loss", "sta_state", "txrate", "rxrate", "signal",
  	"channel", "noise", "ch_time", "ch_time_busy",
  	"ch_time_ext_busy", "ch_time_rx", "ch_time_tx"
  };
  #define STA_STATS_LEN	ARRAY_SIZE(ieee80211_gstrings_sta_stats)
  
  static int ieee80211_get_et_sset_count(struct wiphy *wiphy,
  				       struct net_device *dev,
  				       int sset)
  {
  	struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
  	int rv = 0;
  
  	if (sset == ETH_SS_STATS)
  		rv += STA_STATS_LEN;
  
  	rv += drv_get_et_sset_count(sdata, sset);
  
  	if (rv == 0)
  		return -EOPNOTSUPP;
  	return rv;
  }
  
  static void ieee80211_get_et_stats(struct wiphy *wiphy,
  				   struct net_device *dev,
  				   struct ethtool_stats *stats,
  				   u64 *data)
  {
  	struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
  	struct ieee80211_chanctx_conf *chanctx_conf;
  	struct ieee80211_channel *channel;
  	struct sta_info *sta;
  	struct ieee80211_local *local = sdata->local;
  	struct station_info sinfo;
  	struct survey_info survey;
  	int i, q;
  #define STA_STATS_SURVEY_LEN 7
  
  	memset(data, 0, sizeof(u64) * STA_STATS_LEN);
  
  #define ADD_STA_STATS(sta)				\
  	do {						\
  		data[i++] += sta->rx_packets;		\
  		data[i++] += sta->rx_bytes;		\
  		data[i++] += sta->wep_weak_iv_count;	\
  		data[i++] += sta->num_duplicates;	\
  		data[i++] += sta->rx_fragments;		\
  		data[i++] += sta->rx_dropped;		\
  							\
  		data[i++] += sinfo.tx_packets;		\
  		data[i++] += sinfo.tx_bytes;		\
  		data[i++] += sta->tx_fragments;		\
  		data[i++] += sta->tx_filtered_count;	\
  		data[i++] += sta->tx_retry_failed;	\
  		data[i++] += sta->tx_retry_count;	\
  		data[i++] += sta->beacon_loss_count;	\
  	} while (0)
  
  	/* For Managed stations, find the single station based on BSSID
  	 * and use that.  For interface types, iterate through all available
  	 * stations and add stats for any station that is assigned to this
  	 * network device.
  	 */
  
  	mutex_lock(&local->sta_mtx);
  
  	if (sdata->vif.type == NL80211_IFTYPE_STATION) {
  		sta = sta_info_get_bss(sdata, sdata->u.mgd.bssid);
  
  		if (!(sta && !WARN_ON(sta->sdata->dev != dev)))
  			goto do_survey;
  
  		sinfo.filled = 0;
  		sta_set_sinfo(sta, &sinfo);
  
  		i = 0;
  		ADD_STA_STATS(sta);
  
  		data[i++] = sta->sta_state;
  
  
  		if (sinfo.filled & STATION_INFO_TX_BITRATE)
  			data[i] = 100000 *
  				cfg80211_calculate_bitrate(&sinfo.txrate);
  		i++;
  		if (sinfo.filled & STATION_INFO_RX_BITRATE)
  			data[i] = 100000 *
  				cfg80211_calculate_bitrate(&sinfo.rxrate);
  		i++;
  
  		if (sinfo.filled & STATION_INFO_SIGNAL_AVG)
  			data[i] = (u8)sinfo.signal_avg;
  		i++;
  	} else {
  		list_for_each_entry(sta, &local->sta_list, list) {
  			/* Make sure this station belongs to the proper dev */
  			if (sta->sdata->dev != dev)
  				continue;
  
  			sinfo.filled = 0;
  			sta_set_sinfo(sta, &sinfo);
  			i = 0;
  			ADD_STA_STATS(sta);
  		}
  	}
  
  do_survey:
  	i = STA_STATS_LEN - STA_STATS_SURVEY_LEN;
  	/* Get survey stats for current channel */
  	survey.filled = 0;
  
  	rcu_read_lock();
  	chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf);
  	if (chanctx_conf)
  		channel = chanctx_conf->def.chan;
  	else
  		channel = NULL;
  	rcu_read_unlock();
  
  	if (channel) {
  		q = 0;
  		do {
  			survey.filled = 0;
  			if (drv_get_survey(local, q, &survey) != 0) {
  				survey.filled = 0;
  				break;
  			}
  			q++;
  		} while (channel != survey.channel);
  	}
  
  	if (survey.filled)
  		data[i++] = survey.channel->center_freq;
  	else
  		data[i++] = 0;
  	if (survey.filled & SURVEY_INFO_NOISE_DBM)
  		data[i++] = (u8)survey.noise;
  	else
  		data[i++] = -1LL;
  	if (survey.filled & SURVEY_INFO_CHANNEL_TIME)
  		data[i++] = survey.channel_time;
  	else
  		data[i++] = -1LL;
  	if (survey.filled & SURVEY_INFO_CHANNEL_TIME_BUSY)
  		data[i++] = survey.channel_time_busy;
  	else
  		data[i++] = -1LL;
  	if (survey.filled & SURVEY_INFO_CHANNEL_TIME_EXT_BUSY)
  		data[i++] = survey.channel_time_ext_busy;
  	else
  		data[i++] = -1LL;
  	if (survey.filled & SURVEY_INFO_CHANNEL_TIME_RX)
  		data[i++] = survey.channel_time_rx;
  	else
  		data[i++] = -1LL;
  	if (survey.filled & SURVEY_INFO_CHANNEL_TIME_TX)
  		data[i++] = survey.channel_time_tx;
  	else
  		data[i++] = -1LL;
  
  	mutex_unlock(&local->sta_mtx);
  
  	if (WARN_ON(i != STA_STATS_LEN))
  		return;
  
  	drv_get_et_stats(sdata, stats, &(data[STA_STATS_LEN]));
  }
  
  static void ieee80211_get_et_strings(struct wiphy *wiphy,
  				     struct net_device *dev,
  				     u32 sset, u8 *data)
  {
  	struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
  	int sz_sta_stats = 0;
  
  	if (sset == ETH_SS_STATS) {
  		sz_sta_stats = sizeof(ieee80211_gstrings_sta_stats);
  		memcpy(data, ieee80211_gstrings_sta_stats, sz_sta_stats);
  	}
  	drv_get_et_strings(sdata, sset, &(data[sz_sta_stats]));
  }
  
  static int ieee80211_dump_station(struct wiphy *wiphy, struct net_device *dev,
  				 int idx, u8 *mac, struct station_info *sinfo)
  {
  	struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
  	struct ieee80211_local *local = sdata->local;
  	struct sta_info *sta;
  	int ret = -ENOENT;
  
  	mutex_lock(&local->sta_mtx);
  
  	sta = sta_info_get_by_idx(sdata, idx);
  	if (sta) {
  		ret = 0;
  		memcpy(mac, sta->sta.addr, ETH_ALEN);
  		sta_set_sinfo(sta, sinfo);
  	}
  
  	mutex_unlock(&local->sta_mtx);
  
  	return ret;
  }
  
  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);
  }
  
  static int ieee80211_get_station(struct wiphy *wiphy, struct net_device *dev,
  				 u8 *mac, struct station_info *sinfo)
  {
  	struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
  	struct ieee80211_local *local = sdata->local;
  	struct sta_info *sta;
  	int ret = -ENOENT;
  
  	mutex_lock(&local->sta_mtx);
  
  	sta = sta_info_get_bss(sdata, mac);
  	if (sta) {
  		ret = 0;
  		sta_set_sinfo(sta, sinfo);
  	}
  
  	mutex_unlock(&local->sta_mtx);
  
  	return ret;
  }
  
  static int ieee80211_set_monitor_channel(struct wiphy *wiphy,
  					 struct cfg80211_chan_def *chandef)
  {
  	struct ieee80211_local *local = wiphy_priv(wiphy);
  	struct ieee80211_sub_if_data *sdata;
  	int ret = 0;
  
  	if (cfg80211_chandef_identical(&local->monitor_chandef, chandef))
  		return 0;
  
  	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);
  			ret = ieee80211_vif_use_channel(sdata, chandef,
  					IEEE80211_CHANCTX_EXCLUSIVE);
  		}
  	} else if (local->open_count == local->monitors) {
  		local->_oper_chandef = *chandef;
  		ieee80211_hw_config(local, 0);
  	}
  
  	if (ret == 0)
  		local->monitor_chandef = *chandef;
  	mutex_unlock(&local->iflist_mtx);
  
  	return ret;
  }
  
  static int ieee80211_set_probe_resp(struct ieee80211_sub_if_data *sdata,
  				    const u8 *resp, size_t resp_len)
  {
  	struct probe_resp *new, *old;
  
  	if (!resp || !resp_len)
  		return 1;
  
  	old = rtnl_dereference(sdata->u.ap.probe_resp);
  
  	new = kzalloc(sizeof(struct probe_resp) + resp_len, GFP_KERNEL);
  	if (!new)
  		return -ENOMEM;
  
  	new->len = resp_len;
  	memcpy(new->data, resp, resp_len);
  
  	rcu_assign_pointer(sdata->u.ap.probe_resp, new);
  	if (old)
  		kfree_rcu(old, rcu_head);
  
  	return 0;
  }
  
  int ieee80211_assign_beacon(struct ieee80211_sub_if_data *sdata,
  			    struct cfg80211_beacon_data *params)
  {
  	struct beacon_data *new, *old;
  	int new_head_len, new_tail_len;
  	int size, err;
  	u32 changed = BSS_CHANGED_BEACON;
  
  	old = rtnl_dereference(sdata->u.ap.beacon);
  
  	/* Need to have a beacon head if we don't have one yet */
  	if (!params->head && !old)
  		return -EINVAL;
  
  	/* new or old head? */
  	if (params->head)
  		new_head_len = params->head_len;
  	else
  		new_head_len = old->head_len;
  
  	/* new or old tail? */
  	if (params->tail || !old)
  		/* params->tail_len will be zero for !params->tail */
  		new_tail_len = params->tail_len;
  	else
  		new_tail_len = old->tail_len;
  
  	size = sizeof(*new) + new_head_len + new_tail_len;
  
  	new = kzalloc(size, GFP_KERNEL);
  	if (!new)
  		return -ENOMEM;
  
  	/* start filling the new info now */
  
  	/*
  	 * pointers go into the block we allocated,
  	 * memory is | beacon_data | head | tail |
  	 */
  	new->head = ((u8 *) new) + sizeof(*new);
  	new->tail = new->head + new_head_len;
  	new->head_len = new_head_len;
  	new->tail_len = new_tail_len;
  
  	/* copy in head */
  	if (params->head)
  		memcpy(new->head, params->head, new_head_len);
  	else
  		memcpy(new->head, old->head, new_head_len);
  
  	/* copy in optional tail */
  	if (params->tail)
  		memcpy(new->tail, params->tail, new_tail_len);
  	else
  		if (old)
  			memcpy(new->tail, old->tail, new_tail_len);
  
  	err = ieee80211_set_probe_resp(sdata, params->probe_resp,
  				       params->probe_resp_len);
  	if (err < 0)
  		return err;
  	if (err == 0)
  		changed |= BSS_CHANGED_AP_PROBE_RESP;
  
  	rcu_assign_pointer(sdata->u.ap.beacon, new);
  
  	if (old)
  		kfree_rcu(old, rcu_head);
  
  	return changed;
  }
  
  static int ieee80211_start_ap(struct wiphy *wiphy, struct net_device *dev,
  			      struct cfg80211_ap_settings *params)
  {
  	struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
  	struct beacon_data *old;
  	struct ieee80211_sub_if_data *vlan;
  	u32 changed = BSS_CHANGED_BEACON_INT |
  		      BSS_CHANGED_BEACON_ENABLED |
  		      BSS_CHANGED_BEACON |
  		      BSS_CHANGED_SSID |
  		      BSS_CHANGED_P2P_PS;
  	int err;
  
  	old = rtnl_dereference(sdata->u.ap.beacon);
  	if (old)
  		return -EALREADY;
  
  	/* TODO: make hostapd tell us what it wants */
  	sdata->smps_mode = IEEE80211_SMPS_OFF;
  	sdata->needed_rx_chains = sdata->local->rx_chains;
  	sdata->radar_required = params->radar_required;
  
  	err = ieee80211_vif_use_channel(sdata, &params->chandef,
  					IEEE80211_CHANCTX_SHARED);
  	if (err)
  		return err;
  	ieee80211_vif_copy_chanctx_to_vlans(sdata, false);
  
  	/*
  	 * 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;
  	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;
  	}
  
  	sdata->vif.bss_conf.beacon_int = params->beacon_interval;
  	sdata->vif.bss_conf.dtim_period = params->dtim_period;
  	sdata->vif.bss_conf.enable_beacon = true;
  
  	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);
  
  	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;
  
  	err = ieee80211_assign_beacon(sdata, &params->beacon);
  	if (err < 0)
  		return err;
  	changed |= err;
  
  	err = drv_start_ap(sdata->local, sdata);
  	if (err) {
  		old = rtnl_dereference(sdata->u.ap.beacon);
  		if (old)
  			kfree_rcu(old, rcu_head);
  		RCU_INIT_POINTER(sdata->u.ap.beacon, NULL);
  		return err;
  	}
  
  	ieee80211_bss_info_change_notify(sdata, changed);
  
  	netif_carrier_on(dev);
  	list_for_each_entry(vlan, &sdata->u.ap.vlans, u.vlan.list)
  		netif_carrier_on(vlan->dev);
  
  	return 0;
  }
  
  static int ieee80211_change_beacon(struct wiphy *wiphy, struct net_device *dev,
  				   struct cfg80211_beacon_data *params)
  {
  	struct ieee80211_sub_if_data *sdata;
  	struct beacon_data *old;
  	int err;
  
  	sdata = IEEE80211_DEV_TO_SUB_IF(dev);
  
  	/* 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;
  
  	old = rtnl_dereference(sdata->u.ap.beacon);
  	if (!old)
  		return -ENOENT;
  
  	err = ieee80211_assign_beacon(sdata, params);
  	if (err < 0)
  		return err;
  	ieee80211_bss_info_change_notify(sdata, err);
  	return 0;
  }
  
  static int ieee80211_stop_ap(struct wiphy *wiphy, struct net_device *dev)
  {
  	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;
  
  	old_beacon = rtnl_dereference(sdata->u.ap.beacon);
  	if (!old_beacon)
  		return -ENOENT;
  	old_probe_resp = rtnl_dereference(sdata->u.ap.probe_resp);
  
  	/* abort any running channel switch */
  	sdata->vif.csa_active = false;
  	cancel_work_sync(&sdata->csa_finalize_work);
  
  	/* turn off carrier for this interface and dependent VLANs */
  	list_for_each_entry(vlan, &sdata->u.ap.vlans, u.vlan.list)
  		netif_carrier_off(vlan->dev);
  	netif_carrier_off(dev);
  
  	/* remove beacon and probe response */
  	RCU_INIT_POINTER(sdata->u.ap.beacon, NULL);
  	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);
  
  	list_for_each_entry(vlan, &sdata->u.ap.vlans, u.vlan.list)
  		sta_info_flush_defer(vlan);
  	sta_info_flush_defer(sdata);
  	synchronize_net();
  	rcu_barrier();
  	list_for_each_entry(vlan, &sdata->u.ap.vlans, u.vlan.list) {
  		sta_info_flush_cleanup(vlan);
  		ieee80211_free_keys(vlan);
  	}
  	sta_info_flush_cleanup(sdata);
  	ieee80211_free_keys(sdata);
  
  	sdata->vif.bss_conf.enable_beacon = false;
  	sdata->vif.bss_conf.ssid_len = 0;
  	clear_bit(SDATA_STATE_OFFCHANNEL_BEACON_STOPPED, &sdata->state);
  	ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_BEACON_ENABLED);
  
  	if (sdata->wdev.cac_started) {
  		cancel_delayed_work_sync(&sdata->dfs_cac_timer_work);
  		cfg80211_cac_event(sdata->dev, NL80211_RADAR_CAC_ABORTED,
  				   GFP_KERNEL);
  	}
  
  	drv_stop_ap(sdata->local, sdata);
  
  	/* 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);
  
  	ieee80211_vif_copy_chanctx_to_vlans(sdata, true);
  	ieee80211_vif_release_channel(sdata);
  
  	return 0;
  }
  
  /* 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];
  } __packed;
  
  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 */
  
  	eth_broadcast_addr(msg->da);
  	memcpy(msg->sa, sta->sta.addr, ETH_ALEN);
  	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) */
  
  	skb->dev = sta->sdata->dev;
  	skb->protocol = eth_type_trans(skb, sta->sdata->dev);
  	memset(skb->cb, 0, sizeof(skb->cb));
  	netif_rx_ni(skb);
  }
  
  static int sta_apply_auth_flags(struct ieee80211_local *local,
  				struct sta_info *sta,
  				u32 mask, u32 set)
  {
  	int ret;
  
  	if (mask & BIT(NL80211_STA_FLAG_AUTHENTICATED) &&
  	    set & BIT(NL80211_STA_FLAG_AUTHENTICATED) &&
  	    !test_sta_flag(sta, WLAN_STA_AUTH)) {
  		ret = sta_info_move_state(sta, IEEE80211_STA_AUTH);
  		if (ret)
  			return ret;
  	}
  
  	if (mask & BIT(NL80211_STA_FLAG_ASSOCIATED) &&
  	    set & BIT(NL80211_STA_FLAG_ASSOCIATED) &&
  	    !test_sta_flag(sta, WLAN_STA_ASSOC)) {
  		ret = sta_info_move_state(sta, IEEE80211_STA_ASSOC);
  		if (ret)
  			return ret;
  	}
  
  	if (mask & BIT(NL80211_STA_FLAG_AUTHORIZED)) {
  		if (set & BIT(NL80211_STA_FLAG_AUTHORIZED))
  			ret = sta_info_move_state(sta, IEEE80211_STA_AUTHORIZED);
  		else if (test_sta_flag(sta, WLAN_STA_AUTHORIZED))
  			ret = sta_info_move_state(sta, IEEE80211_STA_ASSOC);
  		else
  			ret = 0;
  		if (ret)
  			return ret;
  	}
  
  	if (mask & BIT(NL80211_STA_FLAG_ASSOCIATED) &&
  	    !(set & BIT(NL80211_STA_FLAG_ASSOCIATED)) &&
  	    test_sta_flag(sta, WLAN_STA_ASSOC)) {
  		ret = sta_info_move_state(sta, IEEE80211_STA_AUTH);
  		if (ret)
  			return ret;
  	}
  
  	if (mask & BIT(NL80211_STA_FLAG_AUTHENTICATED) &&
  	    !(set & BIT(NL80211_STA_FLAG_AUTHENTICATED)) &&
  	    test_sta_flag(sta, WLAN_STA_AUTH)) {
  		ret = sta_info_move_state(sta, IEEE80211_STA_NONE);
  		if (ret)
  			return ret;
  	}
  
  	return 0;
  }
  
  static int sta_apply_parameters(struct ieee80211_local *local,
  				struct sta_info *sta,
  				struct station_parameters *params)
  {
  	int ret = 0;
  	struct ieee80211_supported_band *sband;
  	struct ieee80211_sub_if_data *sdata = sta->sdata;
  	enum ieee80211_band band = ieee80211_get_sdata_band(sdata);
  	u32 mask, set;
  
  	sband = local->hw.wiphy->bands[band];
  
  	mask = params->sta_flags_mask;
  	set = params->sta_flags_set;
  
  	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);
  	} 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);
  		}
  	}
  
  	ret = sta_apply_auth_flags(local, sta, mask, set);
  	if (ret)
  		return ret;
  
  	if (mask & BIT(NL80211_STA_FLAG_SHORT_PREAMBLE)) {
  		if (set & BIT(NL80211_STA_FLAG_SHORT_PREAMBLE))
  			set_sta_flag(sta, WLAN_STA_SHORT_PREAMBLE);
  		else
  			clear_sta_flag(sta, WLAN_STA_SHORT_PREAMBLE);
  	}
  
  	if (mask & BIT(NL80211_STA_FLAG_WME)) {
  		if (set & BIT(NL80211_STA_FLAG_WME)) {
  			set_sta_flag(sta, WLAN_STA_WME);
  			sta->sta.wme = true;
  		} else {
  			clear_sta_flag(sta, WLAN_STA_WME);
  			sta->sta.wme = false;
  		}
  	}
  
  	if (mask & BIT(NL80211_STA_FLAG_MFP)) {
  		if (set & BIT(NL80211_STA_FLAG_MFP))
  			set_sta_flag(sta, WLAN_STA_MFP);
  		else
  			clear_sta_flag(sta, WLAN_STA_MFP);
  	}
  
  	if (mask & BIT(NL80211_STA_FLAG_TDLS_PEER)) {
  		if (set & BIT(NL80211_STA_FLAG_TDLS_PEER))
  			set_sta_flag(sta, WLAN_STA_TDLS_PEER);
  		else
  			clear_sta_flag(sta, WLAN_STA_TDLS_PEER);
  	}
  
  	if (params->sta_modify_mask & STATION_PARAM_APPLY_UAPSD) {
  		sta->sta.uapsd_queues = params->uapsd_queues;
  		sta->sta.max_sp = params->max_sp;
  	}
  
  	/*
  	 * 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;
  
  	/*
  	 * 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.
  	 */
  
  	if (params->listen_interval >= 0)
  		sta->listen_interval = params->listen_interval;
  
  	if (params->supported_rates) {
  		ieee80211_parse_bitrates(&sdata->vif.bss_conf.chandef,
  					 sband, params->supported_rates,
  					 params->supported_rates_len,
  					 &sta->sta.supp_rates[band]);
  	}
  
  	if (params->ht_capa)
  		ieee80211_ht_cap_ie_to_sta_ht_cap(sdata, sband,
  						  params->ht_capa, sta);
  
  	if (params->vht_capa)
  		ieee80211_vht_cap_ie_to_sta_vht_cap(sdata, sband,
  						    params->vht_capa, sta);
  
  	if (ieee80211_vif_is_mesh(&sdata->vif)) {
  #ifdef CPTCFG_MAC80211_MESH
  		u32 changed = 0;
  
  		if (params->sta_modify_mask & STATION_PARAM_APPLY_PLINK_STATE) {
  			switch (params->plink_state) {
  			case NL80211_PLINK_ESTAB:
  				if (sta->plink_state != NL80211_PLINK_ESTAB)
  					changed = mesh_plink_inc_estab_count(
  							sdata);
  				sta->plink_state = params->plink_state;
  
  				ieee80211_mps_sta_status_update(sta);
  				changed |= ieee80211_mps_set_sta_local_pm(sta,
  					      sdata->u.mesh.mshcfg.power_mode);
  				break;
  			case NL80211_PLINK_LISTEN:
  			case NL80211_PLINK_BLOCKED:
  			case NL80211_PLINK_OPN_SNT:
  			case NL80211_PLINK_OPN_RCVD:
  			case NL80211_PLINK_CNF_RCVD:
  			case NL80211_PLINK_HOLDING:
  				if (sta->plink_state == NL80211_PLINK_ESTAB)
  					changed = mesh_plink_dec_estab_count(
  							sdata);
  				sta->plink_state = params->plink_state;
  
  				ieee80211_mps_sta_status_update(sta);
  				changed |=
  				      ieee80211_mps_local_status_update(sdata);
  				break;
  			default:
  				/*  nothing  */
  				break;
  			}
  		}
  
  		switch (params->plink_action) {
  		case NL80211_PLINK_ACTION_NO_ACTION:
  			/* nothing */
  			break;
  		case NL80211_PLINK_ACTION_OPEN:
  			changed |= mesh_plink_open(sta);
  			break;
  		case NL80211_PLINK_ACTION_BLOCK:
  			changed |= mesh_plink_block(sta);
  			break;
  		}
  
  		if (params->local_pm)
  			changed |=
  			      ieee80211_mps_set_sta_local_pm(sta,
  							     params->local_pm);
  		ieee80211_bss_info_change_notify(sdata, changed);
  #endif
  	}
  
  	return 0;
  }
  
  static int ieee80211_add_station(struct wiphy *wiphy, struct net_device *dev,
  				 u8 *mac, struct station_parameters *params)
  {
  	struct ieee80211_local *local = wiphy_priv(wiphy);
  	struct sta_info *sta;
  	struct ieee80211_sub_if_data *sdata;
  	int err;
  	int layer2_update;
  
  	if (params->vlan) {
  		sdata = IEEE80211_DEV_TO_SUB_IF(params->vlan);
  
  		if (sdata->vif.type != NL80211_IFTYPE_AP_VLAN &&
  		    sdata->vif.type != NL80211_IFTYPE_AP)
  			return -EINVAL;
  	} else
  		sdata = IEEE80211_DEV_TO_SUB_IF(dev);
  
  	if (ether_addr_equal(mac, sdata->vif.addr))
  		return -EINVAL;
  
  	if (is_multicast_ether_addr(mac))
  		return -EINVAL;
  
  	sta = sta_info_alloc(sdata, mac, GFP_KERNEL);
  	if (!sta)
  		return -ENOMEM;
  
  	/*
  	 * defaults -- if userspace wants something else we'll
  	 * change it accordingly in sta_apply_parameters()
  	 */
  	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);
  	}
  
  	err = sta_apply_parameters(local, sta, params);
  	if (err) {
  		sta_info_free(local, sta);
  		return err;
  	}
  
  	/*
  	 * for TDLS, rate control should be initialized only when
  	 * rates are known and station is marked authorized
  	 */
  	if (!test_sta_flag(sta, WLAN_STA_TDLS_PEER))
  		rate_control_rate_init(sta);
  
  	layer2_update = sdata->vif.type == NL80211_IFTYPE_AP_VLAN ||
  		sdata->vif.type == NL80211_IFTYPE_AP;
  
  	err = sta_info_insert_rcu(sta);
  	if (err) {
  		rcu_read_unlock();
  		return err;
  	}
  
  	if (layer2_update)
  		ieee80211_send_layer2_update(sta);
  
  	rcu_read_unlock();
  
  	return 0;
  }
  
  static int ieee80211_del_station(struct wiphy *wiphy, struct net_device *dev,
  				 u8 *mac)
  {
  	struct ieee80211_sub_if_data *sdata;
  
  	sdata = IEEE80211_DEV_TO_SUB_IF(dev);
  
  	if (mac)
  		return sta_info_destroy_addr_bss(sdata, mac);
  
  	sta_info_flush(sdata);
  	return 0;
  }
  
  #ifdef CPTCFG_ATH9K_TID_SLEEPING
  static int ieee80211_tid_sleeping(struct wiphy *wiphy,
  				    struct net_device *dev, char * tid_sleep_data_ptr, 
                          u8 tid_sleep_data_len)
  {
      struct ieee80211_local *local = wiphy_priv(wiphy);
      local->ops->set_tid_sleep_mode(tid_sleep_data_ptr, tid_sleep_data_len);
      return 0;
  }                    
  #endif    
  
  static int ieee80211_change_station(struct wiphy *wiphy,
  				    struct net_device *dev, u8 *mac,
  				    struct station_parameters *params)
  {
  	struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
  	struct ieee80211_local *local = wiphy_priv(wiphy);
  	struct sta_info *sta;
  	struct ieee80211_sub_if_data *vlansdata;
  	enum cfg80211_station_type statype;
  	int err;
  
  	mutex_lock(&local->sta_mtx);
  
  	sta = sta_info_get_bss(sdata, mac);
  	if (!sta) {
  		err = -ENOENT;
  		goto out_err;
  	}
  
  	switch (sdata->vif.type) {
  	case NL80211_IFTYPE_MESH_POINT:
  		if (sdata->u.mesh.user_mpm)
  			statype = CFG80211_STA_MESH_PEER_USER;
  		else
  			statype = CFG80211_STA_MESH_PEER_KERNEL;
  		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;
  	}
  
  	err = cfg80211_check_station_change(wiphy, params, statype);
  	if (err)
  		goto out_err;
  
  	if (params->vlan && params->vlan != sta->sdata->dev) {
  		bool prev_4addr = false;
  		bool new_4addr = false;
  
  		vlansdata = IEEE80211_DEV_TO_SUB_IF(params->vlan);
  
  		if (params->vlan->ieee80211_ptr->use_4addr) {
  			if (vlansdata->u.vlan.sta) {
  				err = -EBUSY;
  				goto out_err;
  			}
  
  			rcu_assign_pointer(vlansdata->u.vlan.sta, sta);
  			new_4addr = true;
  		}
  
  		if (sta->sdata->vif.type == NL80211_IFTYPE_AP_VLAN &&
  		    sta->sdata->u.vlan.sta) {
  			rcu_assign_pointer(sta->sdata->u.vlan.sta, NULL);
  			prev_4addr = true;
  		}
  
  		sta->sdata = vlansdata;
  
  		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);
  		}
  
  		ieee80211_send_layer2_update(sta);
  	}
  
  	err = sta_apply_parameters(local, sta, params);
  	if (err)
  		goto out_err;
  
  	/* When peer becomes authorized, init rate control as well */
  	if (test_sta_flag(sta, WLAN_STA_TDLS_PEER) &&
  	    test_sta_flag(sta, WLAN_STA_AUTHORIZED))
  		rate_control_rate_init(sta);
  
  	mutex_unlock(&local->sta_mtx);
  
  	if (sdata->vif.type == NL80211_IFTYPE_STATION &&
  	    params->sta_flags_mask & BIT(NL80211_STA_FLAG_AUTHORIZED)) {
  		ieee80211_recalc_ps(local, -1);
  		ieee80211_recalc_ps_vif(sdata);
  	}
  
  	return 0;
  out_err:
  	mutex_unlock(&local->sta_mtx);
  	return err;
  }
  
  #ifdef CPTCFG_MAC80211_MESH
  static int ieee80211_add_mpath(struct wiphy *wiphy, struct net_device *dev,
  				 u8 *dst, u8 *next_hop)
  {
  	struct ieee80211_sub_if_data *sdata;
  	struct mesh_path *mpath;
  	struct sta_info *sta;
  
  	sdata = IEEE80211_DEV_TO_SUB_IF(dev);
  
  	rcu_read_lock();
  	sta = sta_info_get(sdata, next_hop);
  	if (!sta) {
  		rcu_read_unlock();
  		return -ENOENT;
  	}
  
  	mpath = mesh_path_add(sdata, dst);
  	if (IS_ERR(mpath)) {
  		rcu_read_unlock();
  		return PTR_ERR(mpath);
  	}
  
  	mesh_path_fix_nexthop(mpath, sta);
  
  	rcu_read_unlock();
  	return 0;
  }
  
  static int ieee80211_del_mpath(struct wiphy *wiphy, struct net_device *dev,
  			       u8 *dst)
  {
  	struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
  
  	if (dst)
  		return mesh_path_del(sdata, dst);
  
  	mesh_path_flush_by_iface(sdata);
  	return 0;
  }
  
  static int ieee80211_change_mpath(struct wiphy *wiphy,
  				    struct net_device *dev,
  				    u8 *dst, u8 *next_hop)
  {
  	struct ieee80211_sub_if_data *sdata;
  	struct mesh_path *mpath;
  	struct sta_info *sta;
  
  	sdata = IEEE80211_DEV_TO_SUB_IF(dev);
  
  	rcu_read_lock();
  
  	sta = sta_info_get(sdata, next_hop);
  	if (!sta) {
  		rcu_read_unlock();
  		return -ENOENT;
  	}
  
  	mpath = mesh_path_lookup(sdata, dst);
  	if (!mpath) {
  		rcu_read_unlock();
  		return -ENOENT;
  	}
  
  	mesh_path_fix_nexthop(mpath, sta);
  
  	rcu_read_unlock();
  	return 0;
  }
  
  static void mpath_set_pinfo(struct mesh_path *mpath, u8 *next_hop,
  			    struct mpath_info *pinfo)
  {
  	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);
  	else
  		memset(next_hop, 0, ETH_ALEN);
  
  	memset(pinfo, 0, sizeof(*pinfo));
  
  	pinfo->generation = mesh_paths_generation;
  
  	pinfo->filled = MPATH_INFO_FRAME_QLEN |
  			MPATH_INFO_SN |
  			MPATH_INFO_METRIC |
  			MPATH_INFO_EXPTIME |
  			MPATH_INFO_DISCOVERY_TIMEOUT |
  			MPATH_INFO_DISCOVERY_RETRIES |
  			MPATH_INFO_FLAGS;
  
  	pinfo->frame_qlen = mpath->frame_queue.qlen;
  	pinfo->sn = mpath->sn;
  	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;
  	if (mpath->flags & MESH_PATH_SN_VALID)
  		pinfo->flags |= NL80211_MPATH_FLAG_SN_VALID;
  	if (mpath->flags & MESH_PATH_FIXED)
  		pinfo->flags |= NL80211_MPATH_FLAG_FIXED;
  	if (mpath->flags & MESH_PATH_RESOLVED)
  		pinfo->flags |= NL80211_MPATH_FLAG_RESOLVED;
  }
  
  static int ieee80211_get_mpath(struct wiphy *wiphy, struct net_device *dev,
  			       u8 *dst, u8 *next_hop, 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 = mesh_path_lookup(sdata, dst);
  	if (!mpath) {
  		rcu_read_unlock();
  		return -ENOENT;
  	}
  	memcpy(dst, mpath->dst, ETH_ALEN);
  	mpath_set_pinfo(mpath, next_hop, pinfo);
  	rcu_read_unlock();
  	return 0;
  }
  
  static int ieee80211_dump_mpath(struct wiphy *wiphy, struct net_device *dev,
  				 int idx, u8 *dst, u8 *next_hop,
  				 struct mpath_info *pinfo)
  {
  	struct ieee80211_sub_if_data *sdata;
  	struct mesh_path *mpath;
  
  	sdata = IEEE80211_DEV_TO_SUB_IF(dev);
  
  	rcu_read_lock();
  	mpath = mesh_path_lookup_by_idx(sdata, idx);
  	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_get_mesh_config(struct wiphy *wiphy,
  				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;
  }
  
  static int copy_mesh_setup(struct ieee80211_if_mesh *ifmsh,
  		const struct mesh_setup *setup)
  {
  	u8 *new_ie;
  	const u8 *old_ie;
  	struct ieee80211_sub_if_data *sdata = container_of(ifmsh,
  					struct ieee80211_sub_if_data, u.mesh);
  
  	/* allocate information elements */
  	new_ie = NULL;
  	old_ie = ifmsh->ie;
  
  	if (setup->ie_len) {
  		new_ie = kmemdup(setup->ie, setup->ie_len,
  				GFP_KERNEL);
  		if (!new_ie)
  			return -ENOMEM;
  	}
  	ifmsh->ie_len = setup->ie_len;
  	ifmsh->ie = new_ie;
  	kfree(old_ie);
  
  	/* 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);
  	ifmsh->mesh_sp_id = setup->sync_method;
  	ifmsh->mesh_pp_id = setup->path_sel_proto;
  	ifmsh->mesh_pm_id = setup->path_metric;
  	ifmsh->user_mpm = setup->user_mpm;
  	ifmsh->mesh_auth_id = setup->auth_id;
  	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;
  
  	/* mcast rate setting in Mesh Node */
  	memcpy(sdata->vif.bss_conf.mcast_rate, setup->mcast_rate,
  						sizeof(setup->mcast_rate));
  	sdata->vif.bss_conf.basic_rates = setup->basic_rates;
  
  	sdata->vif.bss_conf.beacon_int = setup->beacon_interval;
  	sdata->vif.bss_conf.dtim_period = setup->dtim_period;
  
  	return 0;
  }
  
  static int ieee80211_update_mesh_config(struct wiphy *wiphy,
  					struct net_device *dev, u32 mask,
  					const struct mesh_config *nconf)
  {
  	struct mesh_config *conf;
  	struct ieee80211_sub_if_data *sdata;
  	struct ieee80211_if_mesh *ifmsh;
  
  	sdata = IEEE80211_DEV_TO_SUB_IF(dev);
  	ifmsh = &sdata->u.mesh;
  
  	/* 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;
  	if (_chg_mesh_attr(NL80211_MESHCONF_ELEMENT_TTL, mask))
  		conf->element_ttl = nconf->element_ttl;
  	if (_chg_mesh_attr(NL80211_MESHCONF_AUTO_OPEN_PLINKS, mask)) {
  		if (ifmsh->user_mpm)
  			return -EBUSY;
  		conf->auto_open_plinks = nconf->auto_open_plinks;
  	}
  	if (_chg_mesh_attr(NL80211_MESHCONF_SYNC_OFFSET_MAX_NEIGHBOR, mask))
  		conf->dot11MeshNbrOffsetMaxNeighbor =
  			nconf->dot11MeshNbrOffsetMaxNeighbor;
  	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;
  	if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_PERR_MIN_INTERVAL, mask))
  		conf->dot11MeshHWMPperrMinInterval =
  			nconf->dot11MeshHWMPperrMinInterval;
  	if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME,
  			   mask))
  		conf->dot11MeshHWMPnetDiameterTraversalTime =
  			nconf->dot11MeshHWMPnetDiameterTraversalTime;
  	if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_ROOTMODE, mask)) {
  		conf->dot11MeshHWMPRootMode = nconf->dot11MeshHWMPRootMode;
  		ieee80211_mesh_root_setup(ifmsh);
  	}
  	if (_chg_mesh_attr(NL80211_MESHCONF_GATE_ANNOUNCEMENTS, mask)) {
  		/* our current gate announcement implementation rides on root
  		 * announcements, so require this ifmsh to also be a root node
  		 * */
  		if (nconf->dot11MeshGateAnnouncementProtocol &&
  		    !(conf->dot11MeshHWMPRootMode > IEEE80211_ROOTMODE_ROOT)) {
  			conf->dot11MeshHWMPRootMode = IEEE80211_PROACTIVE_RANN;
  			ieee80211_mesh_root_setup(ifmsh);
  		}
  		conf->dot11MeshGateAnnouncementProtocol =
  			nconf->dot11MeshGateAnnouncementProtocol;
  	}
  	if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_RANN_INTERVAL, mask))
  		conf->dot11MeshHWMPRannInterval =
  			nconf->dot11MeshHWMPRannInterval;
  	if (_chg_mesh_attr(NL80211_MESHCONF_FORWARDING, mask))
  		conf->dot11MeshForwarding = nconf->dot11MeshForwarding;
  	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;
  	}
  	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);
  	}
  	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;
  	if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_CONFIRMATION_INTERVAL, mask))
  		conf->dot11MeshHWMPconfirmationInterval =
  			nconf->dot11MeshHWMPconfirmationInterval;
  	if (_chg_mesh_attr(NL80211_MESHCONF_POWER_MODE, mask)) {
  		conf->power_mode = nconf->power_mode;
  		ieee80211_mps_local_status_update(sdata);
  	}
  	if (_chg_mesh_attr(NL80211_MESHCONF_AWAKE_WINDOW, mask))
  		conf->dot11MeshAwakeWindowDuration =
  			nconf->dot11MeshAwakeWindowDuration;
  	if (_chg_mesh_attr(NL80211_MESHCONF_PLINK_TIMEOUT, mask))
  		conf->plink_timeout = nconf->plink_timeout;
  	ieee80211_mbss_info_change_notify(sdata, BSS_CHANGED_BEACON);
  	return 0;
  }
  
  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;
  	int err;
  
  	memcpy(&ifmsh->mshcfg, conf, sizeof(struct mesh_config));
  	err = copy_mesh_setup(ifmsh, setup);
  	if (err)
  		return err;
  
  	/* can mesh use other SMPS modes? */
  	sdata->smps_mode = IEEE80211_SMPS_OFF;
  	sdata->needed_rx_chains = sdata->local->rx_chains;
  
  	err = ieee80211_vif_use_channel(sdata, &setup->chandef,
  					IEEE80211_CHANCTX_SHARED);
  	if (err)
  		return err;
  
  	return ieee80211_start_mesh(sdata);
  }
  
  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);
  	ieee80211_vif_release_channel(sdata);
  
  	return 0;
  }
  #endif
  
  static int ieee80211_change_bss(struct wiphy *wiphy,
  				struct net_device *dev,
  				struct bss_parameters *params)
  {
  	struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
  	enum ieee80211_band band;
  	u32 changed = 0;
  
  	if (!rtnl_dereference(sdata->u.ap.beacon))
  		return -ENOENT;
  
  	band = ieee80211_get_sdata_band(sdata);
  
  	if (params->use_cts_prot >= 0) {
  		sdata->vif.bss_conf.use_cts_prot = params->use_cts_prot;
  		changed |= BSS_CHANGED_ERP_CTS_PROT;
  	}
  	if (params->use_short_preamble >= 0) {
  		sdata->vif.bss_conf.use_short_preamble =
  			params->use_short_preamble;
  		changed |= BSS_CHANGED_ERP_PREAMBLE;
  	}
  
  	if (!sdata->vif.bss_conf.use_short_slot &&
  	    band == IEEE80211_BAND_5GHZ) {
  		sdata->vif.bss_conf.use_short_slot = true;
  		changed |= BSS_CHANGED_ERP_SLOT;
  	}
  
  	if (params->use_short_slot_time >= 0) {
  		sdata->vif.bss_conf.use_short_slot =
  			params->use_short_slot_time;
  		changed |= BSS_CHANGED_ERP_SLOT;
  	}
  
  	if (params->basic_rates) {
  		ieee80211_parse_bitrates(&sdata->vif.bss_conf.chandef,
  					 wiphy->bands[band],
  					 params->basic_rates,
  					 params->basic_rates_len,
  					 &sdata->vif.bss_conf.basic_rates);
  		changed |= BSS_CHANGED_BASIC_RATES;
  	}
  
  	if (params->ap_isolate >= 0) {
  		if (params->ap_isolate)
  			sdata->flags |= IEEE80211_SDATA_DONT_BRIDGE_PACKETS;
  		else
  			sdata->flags &= ~IEEE80211_SDATA_DONT_BRIDGE_PACKETS;
  	}
  
  	if (params->ht_opmode >= 0) {
  		sdata->vif.bss_conf.ht_operation_mode =
  			(u16) params->ht_opmode;
  		changed |= BSS_CHANGED_HT;
  	}
  
  	if (params->p2p_ctwindow >= 0) {
  		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;
  		changed |= BSS_CHANGED_P2P_PS;
  	}
  
  	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;
  		changed |= BSS_CHANGED_P2P_PS;
  	}
  
  	ieee80211_bss_info_change_notify(sdata, changed);
  
  	return 0;
  }
  
  static int ieee80211_set_txq_params(struct wiphy *wiphy,
  				    struct net_device *dev,
  				    struct ieee80211_txq_params *params)
  {
  	struct ieee80211_local *local = wiphy_priv(wiphy);
  	struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
  	struct ieee80211_tx_queue_params p;
  
  	if (!local->ops->conf_tx)
  		return -EOPNOTSUPP;
  
  	if (local->hw.queues < IEEE80211_NUM_ACS)
  		return -EOPNOTSUPP;
  
  	memset(&p, 0, sizeof(p));
  	p.aifs = params->aifs;
  	p.cw_max = params->cwmax;
  	p.cw_min = params->cwmin;
  	p.txop = params->txop;
  
  	/*
  	 * Setting tx queue params disables u-apsd because it's only
  	 * called in master mode.
  	 */
  	p.uapsd = false;
  
  	sdata->tx_conf[params->ac] = p;
  	if (drv_conf_tx(local, sdata, params->ac, &p)) {
  		wiphy_debug(local->hw.wiphy,
  			    "failed to set TX queue parameters for AC %d\n",
  			    params->ac);
  		return -EINVAL;
  	}
  
  	ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_QOS);
  
  	return 0;
  }
  
  #ifdef CONFIG_PM
  static int ieee80211_suspend(struct wiphy *wiphy,
  			     struct cfg80211_wowlan *wowlan)
  {
  	return __ieee80211_suspend(wiphy_priv(wiphy), wowlan);
  }
  
  static int ieee80211_resume(struct wiphy *wiphy)
  {
  	return __ieee80211_resume(wiphy_priv(wiphy));
  }
  #else
  #define ieee80211_suspend NULL
  #define ieee80211_resume NULL
  #endif
  
  static int ieee80211_scan(struct wiphy *wiphy,
  			  struct cfg80211_scan_request *req)
  {
  	struct ieee80211_sub_if_data *sdata;
  
  	sdata = IEEE80211_WDEV_TO_SUB_IF(req->wdev);
  
  	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:
  	case NL80211_IFTYPE_P2P_DEVICE:
  		break;
  	case NL80211_IFTYPE_P2P_GO:
  		if (sdata->local->ops->hw_scan)
  			break;
  		/*
  		 * FIXME: implement NoA while scanning in software,
  		 * for now fall through to allow scanning only when
  		 * beaconing hasn't been configured yet
  		 */
  	case NL80211_IFTYPE_AP:
  		/*
  		 * 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)))
  			return -EOPNOTSUPP;
  		break;
  	default:
  		return -EOPNOTSUPP;
  	}
  
  	return ieee80211_request_scan(sdata, req);
  }
  
  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
  ieee80211_sched_scan_stop(struct wiphy *wiphy, struct net_device *dev)
  {
  	struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
  
  	if (!sdata->local->ops->sched_scan_stop)
  		return -EOPNOTSUPP;
  
  	return ieee80211_request_sched_scan_stop(sdata);
  }
  
  static int ieee80211_auth(struct wiphy *wiphy, struct net_device *dev,
  			  struct cfg80211_auth_request *req)
  {
  	return ieee80211_mgd_auth(IEEE80211_DEV_TO_SUB_IF(dev), req);
  }
  
  static int ieee80211_assoc(struct wiphy *wiphy, struct net_device *dev,
  			   struct cfg80211_assoc_request *req)
  {
  	return ieee80211_mgd_assoc(IEEE80211_DEV_TO_SUB_IF(dev), req);
  }
  
  static int ieee80211_deauth(struct wiphy *wiphy, struct net_device *dev,
  			    struct cfg80211_deauth_request *req)
  {
  	return ieee80211_mgd_deauth(IEEE80211_DEV_TO_SUB_IF(dev), req);
  }
  
  static int ieee80211_disassoc(struct wiphy *wiphy, struct net_device *dev,
  			      struct cfg80211_disassoc_request *req)
  {
  	return ieee80211_mgd_disassoc(IEEE80211_DEV_TO_SUB_IF(dev), req);
  }
  
  static int ieee80211_join_ibss(struct wiphy *wiphy, struct net_device *dev,
  			       struct cfg80211_ibss_params *params)
  {
  	return ieee80211_ibss_join(IEEE80211_DEV_TO_SUB_IF(dev), params);
  }
  
  static int ieee80211_leave_ibss(struct wiphy *wiphy, struct net_device *dev)
  {
  	return ieee80211_ibss_leave(IEEE80211_DEV_TO_SUB_IF(dev));
  }
  
  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);
  
  	memcpy(sdata->vif.bss_conf.mcast_rate, rate,
  	       sizeof(int) * IEEE80211_NUM_BANDS);
  
  	return 0;
  }
  
  static int ieee80211_set_wiphy_params(struct wiphy *wiphy, u32 changed)
  {
  	struct ieee80211_local *local = wiphy_priv(wiphy);
  	int err;
  
  	if (changed & WIPHY_PARAM_FRAG_THRESHOLD) {
  		err = drv_set_frag_threshold(local, wiphy->frag_threshold);
  
  		if (err)
  			return err;
  	}
  
  	if (changed & WIPHY_PARAM_COVERAGE_CLASS) {
  		err = drv_set_coverage_class(local, wiphy->coverage_class);
  
  		if (err)
  			return err;
  	}
  
  	if (changed & WIPHY_PARAM_RTS_THRESHOLD) {
  		err = drv_set_rts_threshold(local, wiphy->rts_threshold);
  
  		if (err)
  			return err;
  	}
  
  	if (changed & WIPHY_PARAM_RETRY_SHORT) {
  		if (wiphy->retry_short > IEEE80211_MAX_TX_RETRY)
  			return -EINVAL;
  		local->hw.conf.short_frame_max_tx_count = wiphy->retry_short;
  	}
  	if (changed & WIPHY_PARAM_RETRY_LONG) {
  		if (wiphy->retry_long > IEEE80211_MAX_TX_RETRY)
  			return -EINVAL;
  		local->hw.conf.long_frame_max_tx_count = wiphy->retry_long;
  	}
  	if (changed &
  	    (WIPHY_PARAM_RETRY_SHORT | WIPHY_PARAM_RETRY_LONG))
  		ieee80211_hw_config(local, IEEE80211_CONF_CHANGE_RETRY_LIMITS);
  
  	return 0;
  }
  
  static int ieee80211_set_tx_power(struct wiphy *wiphy,
  				  struct wireless_dev *wdev,
  				  enum nl80211_tx_power_setting type, int mbm)
  {
  	struct ieee80211_local *local = wiphy_priv(wiphy);
  	struct ieee80211_sub_if_data *sdata;
  
  	if (wdev) {
  		sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
  
  		switch (type) {
  		case NL80211_TX_POWER_AUTOMATIC:
  			sdata->user_power_level = IEEE80211_UNSET_POWER_LEVEL;
  			break;
  		case NL80211_TX_POWER_LIMITED:
  		case NL80211_TX_POWER_FIXED:
  			if (mbm < 0 || (mbm % 100))
  				return -EOPNOTSUPP;
  			sdata->user_power_level = MBM_TO_DBM(mbm);
  			break;
  		}
  
  		ieee80211_recalc_txpower(sdata);
  
  		return 0;
  	}
  
  	switch (type) {
  	case NL80211_TX_POWER_AUTOMATIC:
  		local->user_power_level = IEEE80211_UNSET_POWER_LEVEL;
  		break;
  	case NL80211_TX_POWER_LIMITED:
  	case NL80211_TX_POWER_FIXED:
  		if (mbm < 0 || (mbm % 100))
  			return -EOPNOTSUPP;
  		local->user_power_level = MBM_TO_DBM(mbm);
  		break;
  	}
  
  	mutex_lock(&local->iflist_mtx);
  	list_for_each_entry(sdata, &local->interfaces, list)
  		sdata->user_power_level = local->user_power_level;
  	list_for_each_entry(sdata, &local->interfaces, list)
  		ieee80211_recalc_txpower(sdata);
  	mutex_unlock(&local->iflist_mtx);
  
  	return 0;
  }
  
  static int ieee80211_get_tx_power(struct wiphy *wiphy,
  				  struct wireless_dev *wdev,
  				  int *dbm)
  {
  	struct ieee80211_local *local = wiphy_priv(wiphy);
  	struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
  
  	if (!local->use_chanctx)
  		*dbm = local->hw.conf.power_level;
  	else
  		*dbm = sdata->vif.bss_conf.txpower;
  
  	return 0;
  }
  
  static int ieee80211_set_wds_peer(struct wiphy *wiphy, struct net_device *dev,
  				  const u8 *addr)
  {
  	struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
  
  	memcpy(&sdata->u.wds.remote_addr, addr, ETH_ALEN);
  
  	return 0;
  }
  
  static void ieee80211_rfkill_poll(struct wiphy *wiphy)
  {
  	struct ieee80211_local *local = wiphy_priv(wiphy);
  
  	drv_rfkill_poll(local);
  }
  
  #ifdef CPTCFG_NL80211_TESTMODE
  static int ieee80211_testmode_cmd(struct wiphy *wiphy,
  				  struct wireless_dev *wdev,
  				  void *data, int len)
  {
  	struct ieee80211_local *local = wiphy_priv(wiphy);
  	struct ieee80211_vif *vif = NULL;
  
  	if (!local->ops->testmode_cmd)
  		return -EOPNOTSUPP;
  
  	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);
  }
  
  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);
  }
  #endif
  
  int __ieee80211_request_smps(struct ieee80211_sub_if_data *sdata,
  			     enum ieee80211_smps_mode smps_mode)
  {
  	const u8 *ap;
  	enum ieee80211_smps_mode old_req;
  	int err;
  
  	lockdep_assert_held(&sdata->wdev.mtx);
  
  	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
  	 * association, there's no need to do anything, just store
  	 * the new value until we associate.
  	 */
  	if (!sdata->u.mgd.associated ||
  	    sdata->vif.bss_conf.chandef.width == NL80211_CHAN_WIDTH_20_NOHT)
  		return 0;
  
  	ap = sdata->u.mgd.associated->bssid;
  
  	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;
  }
  
  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);
  
  	if (sdata->vif.type != NL80211_IFTYPE_STATION)
  		return -EOPNOTSUPP;
  
  	if (!(local->hw.flags & IEEE80211_HW_SUPPORTS_PS))
  		return -EOPNOTSUPP;
  
  	if (enabled == sdata->u.mgd.powersave &&
  	    timeout == local->dynamic_ps_forced_timeout)
  		return 0;
  
  	sdata->u.mgd.powersave = enabled;
  	local->dynamic_ps_forced_timeout = timeout;
  
  	/* no change, but if automatic follow powersave */
  	sdata_lock(sdata);
  	__ieee80211_request_smps(sdata, sdata->u.mgd.req_smps);
  	sdata_unlock(sdata);
  
  	if (local->hw.flags & IEEE80211_HW_SUPPORTS_DYNAMIC_PS)
  		ieee80211_hw_config(local, IEEE80211_CONF_CHANGE_PS);
  
  	ieee80211_recalc_ps(local, -1);
  	ieee80211_recalc_ps_vif(sdata);
  
  	return 0;
  }
  
  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 */
  	if (sdata->u.mgd.associated &&
  	    sdata->vif.driver_flags & IEEE80211_VIF_SUPPORTS_CQM_RSSI)
  		ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_CQM);
  
  	return 0;
  }
  
  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);
  	int i, ret;
  
  	if (!ieee80211_sdata_running(sdata))
  		return -ENETDOWN;
  
  	if (local->hw.flags & IEEE80211_HW_HAS_RATE_CONTROL) {
  		ret = drv_set_bitrate_mask(local, sdata, mask);
  		if (ret)
  			return ret;
  	}
  
  	for (i = 0; i < IEEE80211_NUM_BANDS; i++) {
  		struct ieee80211_supported_band *sband = wiphy->bands[i];
  		int j;
  
  		sdata->rc_rateidx_mask[i] = mask->control[i].legacy;
  		memcpy(sdata->rc_rateidx_mcs_mask[i], mask->control[i].mcs,
  		       sizeof(mask->control[i].mcs));
  
  		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;
  			}
  	}
  
  	return 0;
  }
  
  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,
  				    struct sk_buff *txskb,
  				    enum ieee80211_roc_type type)
  {
  	struct ieee80211_roc_work *roc, *tmp;
  	bool queued = false;
  	int ret;
  
  	lockdep_assert_held(&local->mtx);
  
  	if (local->use_chanctx && !local->ops->remain_on_channel)
  		return -EOPNOTSUPP;
  
  	roc = kzalloc(sizeof(*roc), GFP_KERNEL);
  	if (!roc)
  		return -ENOMEM;
  
  	roc->chan = channel;
  	roc->duration = duration;
  	roc->req_duration = duration;
  	roc->frame = txskb;
  	roc->type = type;
  	roc->mgmt_tx_cookie = (unsigned long)txskb;
  	roc->sdata = sdata;
  	INIT_DELAYED_WORK(&roc->work, ieee80211_sw_roc_work);
  	INIT_LIST_HEAD(&roc->dependents);
  
  	/* if there's one pending or we're scanning, queue this one */
  	if (!list_empty(&local->roc_list) ||
  	    local->scanning || local->radar_detect_enabled)
  		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) */
  
  	/*
  	 * 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;
  
  	ret = drv_remain_on_channel(local, sdata, channel, duration, type);
  	if (ret) {
  		kfree(roc);
  		return ret;
  	}
  
  	roc->started = true;
  	goto out_queue;
  
   out_check_combine:
  	list_for_each_entry(tmp, &local->roc_list, list) {
  		if (tmp->chan != channel || tmp->sdata != sdata)
  			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.
  		 * If the type of the new ROC has higher priority, modify the
  		 * type of the previous one to match that of the new one.
  		 */
  		if (!tmp->started) {
  			list_add_tail(&roc->list, &tmp->dependents);
  			tmp->duration = max(tmp->duration, roc->duration);
  			tmp->type = max(tmp->type, roc->type);
  			queued = true;
  			break;
  		}
  
  		/* If it has already started, it's more difficult ... */
  		if (local->ops->remain_on_channel) {
  			unsigned long j = jiffies;
  
  			/*
  			 * In the offloaded ROC case, if it hasn't begun, add
  			 * this new one to the dependent list to be handled
  			 * when the master one begins. If it has begun,
  			 * check that there's still a minimum time left and
  			 * if so, start this one, transmitting the frame, but
  			 * add it to the list directly after this one with
  			 * 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.
  			 * TODO: the ROC type is ignored here, assuming that it
  			 * is better to immediately use the current ROC.
  			 */
  			if (!tmp->hw_begun) {
  				list_add_tail(&roc->list, &tmp->dependents);
  				queued = true;
  				break;
  			}
  
  			if (time_before(j + IEEE80211_ROC_MIN_LEFT,
  					tmp->hw_start_time +
  					msecs_to_jiffies(tmp->duration))) {
  				int new_dur;
  
  				ieee80211_handle_roc_started(roc);
  
  				new_dur = roc->duration -
  					  jiffies_to_msecs(tmp->hw_start_time +
  							   msecs_to_jiffies(
  								tmp->duration) -
  							   j);
  
  				if (new_dur > 0) {
  					/* add right after tmp */
  					list_add(&roc->list, &tmp->list);
  				} else {
  					list_add_tail(&roc->list,
  						      &tmp->dependents);
  				}
  				queued = true;
  			}
  		} else if (del_timer_sync(&tmp->work.timer)) {
  			unsigned long new_end;
  
  			/*
  			 * In the software ROC case, cancel the timer, if
  			 * that fails then the finish work is already
  			 * queued/pending and thus we queue the new ROC
  			 * normally, if that succeeds then we can extend
  			 * the timer duration and TX the frame (if any.)
  			 */
  
  			list_add_tail(&roc->list, &tmp->dependents);
  			queued = true;
  
  			new_end = jiffies + msecs_to_jiffies(roc->duration);
  
  			/* ok, it was started & we canceled timer */
  			if (time_after(new_end, tmp->work.timer.expires))
  				mod_timer(&tmp->work.timer, new_end);
  			else
  				add_timer(&tmp->work.timer);
  
  			ieee80211_handle_roc_started(roc);
  		}
  		break;
  	}
  
   out_queue:
  	if (!queued)
  		list_add_tail(&roc->list, &local->roc_list);
  
  	/*
  	 * 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;
  	}
  
  	return 0;
  }
  
  static int ieee80211_remain_on_channel(struct wiphy *wiphy,
  				       struct wireless_dev *wdev,
  				       struct ieee80211_channel *chan,
  				       unsigned int duration,
  				       u64 *cookie)
  {
  	struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
  	struct ieee80211_local *local = sdata->local;
  	int ret;
  
  	mutex_lock(&local->mtx);
  	ret = ieee80211_start_roc_work(local, sdata, chan,
  				       duration, cookie, NULL,
  				       IEEE80211_ROC_TYPE_NORMAL);
  	mutex_unlock(&local->mtx);
  
  	return ret;
  }
  
  static int ieee80211_cancel_roc(struct ieee80211_local *local,
  				u64 cookie, bool mgmt_tx)
  {
  	struct ieee80211_roc_work *roc, *tmp, *found = NULL;
  	int ret;
  
  	mutex_lock(&local->mtx);
  	list_for_each_entry_safe(roc, tmp, &local->roc_list, list) {
  		struct ieee80211_roc_work *dep, *tmp2;
  
  		list_for_each_entry_safe(dep, tmp2, &roc->dependents, list) {
  			if (!mgmt_tx && dep->cookie != cookie)
  				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);
  
  			ieee80211_roc_notify_destroy(dep, true);
  			return 0;
  		}
  
  		if (!mgmt_tx && roc->cookie != cookie)
  			continue;
  		else if (mgmt_tx && roc->mgmt_tx_cookie != cookie)
  			continue;
  
  		found = roc;
  		break;
  	}
  
  	if (!found) {
  		mutex_unlock(&local->mtx);
  		return -ENOENT;
  	}
  
  	/*
  	 * 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.
  	 */
  
  	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;
  			}
  		}
  
  		list_del(&found->list);
  
  		if (found->started)
  			ieee80211_start_next_roc(local);
  		mutex_unlock(&local->mtx);
  
  		ieee80211_roc_notify_destroy(found, true);
  	} else {
  		/* work may be pending so use it all the time */
  		found->abort = true;
  		ieee80211_queue_delayed_work(&local->hw, &found->work, 0);
  
  		mutex_unlock(&local->mtx);
  
  		/* work will clean up etc */
  		flush_delayed_work(&found->work);
  		WARN_ON(!found->to_be_freed);
  		kfree(found);
  	}
  
  	return 0;
  }
  
  static int ieee80211_cancel_remain_on_channel(struct wiphy *wiphy,
  					      struct wireless_dev *wdev,
  					      u64 cookie)
  {
  	struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
  	struct ieee80211_local *local = sdata->local;
  
  	return ieee80211_cancel_roc(local, cookie, false);
  }
  
  static int ieee80211_start_radar_detection(struct wiphy *wiphy,
  					   struct net_device *dev,
  					   struct cfg80211_chan_def *chandef)
  {
  	struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
  	struct ieee80211_local *local = sdata->local;
  	unsigned long timeout;
  	int err;
  
  	if (!list_empty(&local->roc_list) || local->scanning)
  		return -EBUSY;
  
  	/* whatever, but channel contexts should not complain about that one */
  	sdata->smps_mode = IEEE80211_SMPS_OFF;
  	sdata->needed_rx_chains = local->rx_chains;
  	sdata->radar_required = true;
  
  	mutex_lock(&local->iflist_mtx);
  	err = ieee80211_vif_use_channel(sdata, chandef,
  					IEEE80211_CHANCTX_SHARED);
  	mutex_unlock(&local->iflist_mtx);
  	if (err)
  		return err;
  
  	timeout = msecs_to_jiffies(IEEE80211_DFS_MIN_CAC_TIME_MS);
  	ieee80211_queue_delayed_work(&sdata->local->hw,
  				     &sdata->dfs_cac_timer_work, timeout);
  
  	return 0;
  }
  
  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;
  }
  
  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);
  	struct ieee80211_local *local = sdata->local;
  	int err, changed;
  
  	if (!ieee80211_sdata_running(sdata))
  		return;
  
  	if (WARN_ON(sdata->vif.type != NL80211_IFTYPE_AP))
  		return;
  
  	sdata->radar_required = sdata->csa_radar_required;
  	err = ieee80211_vif_change_channel(sdata, &local->csa_chandef,
  					   &changed);
  	if (WARN_ON(err < 0))
  		return;
  
  	err = ieee80211_assign_beacon(sdata, sdata->u.ap.next_beacon);
  	if (err < 0)
  		return;
  
  	changed |= err;
  	kfree(sdata->u.ap.next_beacon);
  	sdata->u.ap.next_beacon = NULL;
  	sdata->vif.csa_active = false;
  
  	ieee80211_wake_queues_by_reason(&sdata->local->hw,
  					IEEE80211_MAX_QUEUE_MAP,
  					IEEE80211_QUEUE_STOP_REASON_CSA);
  
  	ieee80211_bss_info_change_notify(sdata, changed);
  
  	cfg80211_ch_switch_notify(sdata->dev, &local->csa_chandef);
  }
  
  static 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;
  	struct ieee80211_chanctx_conf *chanctx_conf;
  	struct ieee80211_chanctx *chanctx;
  	int err, num_chanctx;
  
  	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;
  
  	rcu_read_lock();
  	chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf);
  	if (!chanctx_conf) {
  		rcu_read_unlock();
  		return -EBUSY;
  	}
  
  	/* don't handle for multi-VIF cases */
  	chanctx = container_of(chanctx_conf, struct ieee80211_chanctx, conf);
  	if (chanctx->refcount > 1) {
  		rcu_read_unlock();
  		return -EBUSY;
  	}
  	num_chanctx = 0;
  	list_for_each_entry_rcu(chanctx, &local->chanctx_list, list)
  		num_chanctx++;
  	rcu_read_unlock();
  
  	if (num_chanctx > 1)
  		return -EBUSY;
  
  	/* don't allow another channel switch if one is already active. */
  	if (sdata->vif.csa_active)
  		return -EBUSY;
  
  	/* only handle AP for now. */
  	switch (sdata->vif.type) {
  	case NL80211_IFTYPE_AP:
  		break;
  	default:
  		return -EOPNOTSUPP;
  	}
  
  	sdata->u.ap.next_beacon = cfg80211_beacon_dup(&params->beacon_after);
  	if (!sdata->u.ap.next_beacon)
  		return -ENOMEM;
  
  	sdata->csa_counter_offset_beacon = params->counter_offset_beacon;
  	sdata->csa_counter_offset_presp = params->counter_offset_presp;
  	sdata->csa_radar_required = params->radar_required;
  
  	if (params->block_tx)
  		ieee80211_stop_queues_by_reason(&local->hw,
  				IEEE80211_MAX_QUEUE_MAP,
  				IEEE80211_QUEUE_STOP_REASON_CSA);
  
  	err = ieee80211_assign_beacon(sdata, &params->beacon_csa);
  	if (err < 0)
  		return err;
  
  	local->csa_chandef = params->chandef;
  	sdata->vif.csa_active = true;
  
  	ieee80211_bss_info_change_notify(sdata, err);
  	drv_channel_switch_beacon(sdata, &params->chandef);
  
  	return 0;
  }
  
  static int ieee80211_mgmt_tx(struct wiphy *wiphy, struct wireless_dev *wdev,
  			     struct ieee80211_channel *chan, bool offchan,
  			     unsigned int wait, const u8 *buf, size_t len,
  			     bool no_cck, bool dont_wait_for_ack, u64 *cookie)
  {
  	struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
  	struct ieee80211_local *local = sdata->local;
  	struct sk_buff *skb;
  	struct sta_info *sta;
  	const struct ieee80211_mgmt *mgmt = (void *)buf;
  	bool need_offchan = false;
  	u32 flags;
  	int ret;
  
  	if (dont_wait_for_ack)
  		flags = IEEE80211_TX_CTL_NO_ACK;
  	else
  		flags = IEEE80211_TX_INTFL_NL80211_FRAME_TX |
  			IEEE80211_TX_CTL_REQ_TX_STATUS;
  
  	if (no_cck)
  		flags |= IEEE80211_TX_CTL_NO_CCK_RATE;
  
  	switch (sdata->vif.type) {
  	case NL80211_IFTYPE_ADHOC:
  		if (!sdata->vif.bss_conf.ibss_joined)
  			need_offchan = true;
  		/* fall through */
  #ifdef CPTCFG_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
  	case NL80211_IFTYPE_AP:
  	case NL80211_IFTYPE_AP_VLAN:
  	case NL80211_IFTYPE_P2P_GO:
  		if (sdata->vif.type != NL80211_IFTYPE_ADHOC &&
  		    !ieee80211_vif_is_mesh(&sdata->vif) &&
  		    !rcu_access_pointer(sdata->bss->beacon))
  			need_offchan = true;
  		if (!ieee80211_is_action(mgmt->frame_control) ||
  		    mgmt->u.action.category == WLAN_CATEGORY_PUBLIC ||
  		    mgmt->u.action.category == WLAN_CATEGORY_SELF_PROTECTED)
  			break;
  		rcu_read_lock();
  		sta = sta_info_get(sdata, mgmt->da);
  		rcu_read_unlock();
  		if (!sta)
  			return -ENOLINK;
  		break;
  	case NL80211_IFTYPE_STATION:
  	case NL80211_IFTYPE_P2P_CLIENT:
  		if (!sdata->u.mgd.associated)
  			need_offchan = true;
  		break;
  	case NL80211_IFTYPE_P2P_DEVICE:
  		need_offchan = true;
  		break;
  	default:
  		return -EOPNOTSUPP;
  	}
  
  	/* configurations requiring offchan cannot work if no channel has been
  	 * specified
  	 */
  	if (need_offchan && !chan)
  		return -EINVAL;
  
  	mutex_lock(&local->mtx);
  
  	/* Check if the operating channel is the requested channel */
  	if (!need_offchan) {
  		struct ieee80211_chanctx_conf *chanctx_conf;
  
  		rcu_read_lock();
  		chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf);
  
  		if (chanctx_conf) {
  			need_offchan = chan && (chan != chanctx_conf->def.chan);
  		} else if (!chan) {
  			ret = -EINVAL;
  			rcu_read_unlock();
  			goto out_unlock;
  		} else {
  			need_offchan = true;
  		}
  		rcu_read_unlock();
  	}
  
  	if (need_offchan && !offchan) {
  		ret = -EBUSY;
  		goto out_unlock;
  	}
  
  	skb = dev_alloc_skb(local->hw.extra_tx_headroom + len);
  	if (!skb) {
  		ret = -ENOMEM;
  		goto out_unlock;
  	}
  	skb_reserve(skb, local->hw.extra_tx_headroom);
  
  	memcpy(skb_put(skb, len), buf, len);
  
  	IEEE80211_SKB_CB(skb)->flags = flags;
  
  	skb->dev = sdata->dev;
  
  	if (!need_offchan) {
  		*cookie = (unsigned long) skb;
  		ieee80211_tx_skb(sdata, skb);
  		ret = 0;
  		goto out_unlock;
  	}
  
  	IEEE80211_SKB_CB(skb)->flags |= IEEE80211_TX_CTL_TX_OFFCHAN |
  					IEEE80211_TX_INTFL_OFFCHAN_TX_OK;
  	if (local->hw.flags & IEEE80211_HW_QUEUE_CONTROL)
  		IEEE80211_SKB_CB(skb)->hw_queue =
  			local->hw.offchannel_tx_hw_queue;
  
  	/* This will handle all kinds of coalescing and immediate TX */
  	ret = ieee80211_start_roc_work(local, sdata, chan,
  				       wait, cookie, skb,
  				       IEEE80211_ROC_TYPE_MGMT_TX);
  	if (ret)
  		kfree_skb(skb);
   out_unlock:
  	mutex_unlock(&local->mtx);
  	return ret;
  }
  
  static int ieee80211_mgmt_tx_cancel_wait(struct wiphy *wiphy,
  					 struct wireless_dev *wdev,
  					 u64 cookie)
  {
  	struct ieee80211_local *local = wiphy_priv(wiphy);
  
  	return ieee80211_cancel_roc(local, cookie, true);
  }
  
  static void ieee80211_mgmt_frame_register(struct wiphy *wiphy,
  					  struct wireless_dev *wdev,
  					  u16 frame_type, bool reg)
  {
  	struct ieee80211_local *local = wiphy_priv(wiphy);
  
  	switch (frame_type) {
  	case IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_PROBE_REQ:
  		if (reg)
  			local->probe_req_reg++;
  		else
  			local->probe_req_reg--;
  
  		if (!local->open_count)
  			break;
  
  		ieee80211_queue_work(&local->hw, &local->reconfig_filter);
  		break;
  	default:
  		break;
  	}
  }
  
  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);
  }
  
  static int ieee80211_set_ringparam(struct wiphy *wiphy, u32 tx, u32 rx)
  {
  	struct ieee80211_local *local = wiphy_priv(wiphy);
  
  	return drv_set_ringparam(local, tx, rx);
  }
  
  static void ieee80211_get_ringparam(struct wiphy *wiphy,
  				    u32 *tx, u32 *tx_max, u32 *rx, u32 *rx_max)
  {
  	struct ieee80211_local *local = wiphy_priv(wiphy);
  
  	drv_get_ringparam(local, tx, tx_max, rx, rx_max);
  }
  
  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;
  }
  
  static void ieee80211_tdls_add_ext_capab(struct sk_buff *skb)
  {
  	u8 *pos = (void *)skb_put(skb, 7);
  
  	*pos++ = WLAN_EID_EXT_CAPABILITY;
  	*pos++ = 5; /* len */
  	*pos++ = 0x0;
  	*pos++ = 0x0;
  	*pos++ = 0x0;
  	*pos++ = 0x0;
  	*pos++ = WLAN_EXT_CAPA5_TDLS_ENABLED;
  }
  
  static u16 ieee80211_get_tdls_sta_capab(struct ieee80211_sub_if_data *sdata)
  {
  	struct ieee80211_local *local = sdata->local;
  	u16 capab;
  
  	capab = 0;
  	if (ieee80211_get_sdata_band(sdata) != IEEE80211_BAND_2GHZ)
  		return capab;
  
  	if (!(local->hw.flags & IEEE80211_HW_2GHZ_SHORT_SLOT_INCAPABLE))
  		capab |= WLAN_CAPABILITY_SHORT_SLOT_TIME;
  	if (!(local->hw.flags & IEEE80211_HW_2GHZ_SHORT_PREAMBLE_INCAPABLE))
  		capab |= WLAN_CAPABILITY_SHORT_PREAMBLE;
  
  	return capab;
  }
  
  static void ieee80211_tdls_add_link_ie(struct sk_buff *skb, u8 *src_addr,
  				       u8 *peer, u8 *bssid)
  {
  	struct ieee80211_tdls_lnkie *lnkid;
  
  	lnkid = (void *)skb_put(skb, sizeof(struct ieee80211_tdls_lnkie));
  
  	lnkid->ie_type = WLAN_EID_LINK_ID;
  	lnkid->ie_len = sizeof(struct ieee80211_tdls_lnkie) - 2;
  
  	memcpy(lnkid->bssid, bssid, ETH_ALEN);
  	memcpy(lnkid->init_sta, src_addr, ETH_ALEN);
  	memcpy(lnkid->resp_sta, peer, ETH_ALEN);
  }
  
  static int
  ieee80211_prep_tdls_encap_data(struct wiphy *wiphy, struct net_device *dev,
  			       u8 *peer, u8 action_code, u8 dialog_token,
  			       u16 status_code, struct sk_buff *skb)
  {
  	struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
  	enum ieee80211_band band = ieee80211_get_sdata_band(sdata);
  	struct ieee80211_tdls_data *tf;
  
  	tf = (void *)skb_put(skb, offsetof(struct ieee80211_tdls_data, u));
  
  	memcpy(tf->da, peer, ETH_ALEN);
  	memcpy(tf->sa, sdata->vif.addr, ETH_ALEN);
  	tf->ether_type = cpu_to_be16(ETH_P_TDLS);
  	tf->payload_type = WLAN_TDLS_SNAP_RFTYPE;
  
  	switch (action_code) {
  	case WLAN_TDLS_SETUP_REQUEST:
  		tf->category = WLAN_CATEGORY_TDLS;
  		tf->action_code = WLAN_TDLS_SETUP_REQUEST;
  
  		skb_put(skb, sizeof(tf->u.setup_req));
  		tf->u.setup_req.dialog_token = dialog_token;
  		tf->u.setup_req.capability =
  			cpu_to_le16(ieee80211_get_tdls_sta_capab(sdata));
  
  		ieee80211_add_srates_ie(sdata, skb, false, band);
  		ieee80211_add_ext_srates_ie(sdata, skb, false, band);
  		ieee80211_tdls_add_ext_capab(skb);
  		break;
  	case WLAN_TDLS_SETUP_RESPONSE:
  		tf->category = WLAN_CATEGORY_TDLS;
  		tf->action_code = WLAN_TDLS_SETUP_RESPONSE;
  
  		skb_put(skb, sizeof(tf->u.setup_resp));
  		tf->u.setup_resp.status_code = cpu_to_le16(status_code);
  		tf->u.setup_resp.dialog_token = dialog_token;
  		tf->u.setup_resp.capability =
  			cpu_to_le16(ieee80211_get_tdls_sta_capab(sdata));
  
  		ieee80211_add_srates_ie(sdata, skb, false, band);
  		ieee80211_add_ext_srates_ie(sdata, skb, false, band);
  		ieee80211_tdls_add_ext_capab(skb);
  		break;
  	case WLAN_TDLS_SETUP_CONFIRM:
  		tf->category = WLAN_CATEGORY_TDLS;
  		tf->action_code = WLAN_TDLS_SETUP_CONFIRM;
  
  		skb_put(skb, sizeof(tf->u.setup_cfm));
  		tf->u.setup_cfm.status_code = cpu_to_le16(status_code);
  		tf->u.setup_cfm.dialog_token = dialog_token;
  		break;
  	case WLAN_TDLS_TEARDOWN:
  		tf->category = WLAN_CATEGORY_TDLS;
  		tf->action_code = WLAN_TDLS_TEARDOWN;
  
  		skb_put(skb, sizeof(tf->u.teardown));
  		tf->u.teardown.reason_code = cpu_to_le16(status_code);
  		break;
  	case WLAN_TDLS_DISCOVERY_REQUEST:
  		tf->category = WLAN_CATEGORY_TDLS;
  		tf->action_code = WLAN_TDLS_DISCOVERY_REQUEST;
  
  		skb_put(skb, sizeof(tf->u.discover_req));
  		tf->u.discover_req.dialog_token = dialog_token;
  		break;
  	default:
  		return -EINVAL;
  	}
  
  	return 0;
  }
  
  static int
  ieee80211_prep_tdls_direct(struct wiphy *wiphy, struct net_device *dev,
  			   u8 *peer, u8 action_code, u8 dialog_token,
  			   u16 status_code, struct sk_buff *skb)
  {
  	struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
  	enum ieee80211_band band = ieee80211_get_sdata_band(sdata);
  	struct ieee80211_mgmt *mgmt;
  
  	mgmt = (void *)skb_put(skb, 24);
  	memset(mgmt, 0, 24);
  	memcpy(mgmt->da, peer, ETH_ALEN);
  	memcpy(mgmt->sa, sdata->vif.addr, ETH_ALEN);
  	memcpy(mgmt->bssid, sdata->u.mgd.bssid, ETH_ALEN);
  
  	mgmt->frame_control = cpu_to_le16(IEEE80211_FTYPE_MGMT |
  					  IEEE80211_STYPE_ACTION);
  
  	switch (action_code) {
  	case WLAN_PUB_ACTION_TDLS_DISCOVER_RES:
  		skb_put(skb, 1 + sizeof(mgmt->u.action.u.tdls_discover_resp));
  		mgmt->u.action.category = WLAN_CATEGORY_PUBLIC;
  		mgmt->u.action.u.tdls_discover_resp.action_code =
  			WLAN_PUB_ACTION_TDLS_DISCOVER_RES;
  		mgmt->u.action.u.tdls_discover_resp.dialog_token =
  			dialog_token;
  		mgmt->u.action.u.tdls_discover_resp.capability =
  			cpu_to_le16(ieee80211_get_tdls_sta_capab(sdata));
  
  		ieee80211_add_srates_ie(sdata, skb, false, band);
  		ieee80211_add_ext_srates_ie(sdata, skb, false, band);
  		ieee80211_tdls_add_ext_capab(skb);
  		break;
  	default:
  		return -EINVAL;
  	}
  
  	return 0;
  }
  
  static int ieee80211_tdls_mgmt(struct wiphy *wiphy, struct net_device *dev,
  			       u8 *peer, u8 action_code, u8 dialog_token,
  			       u16 status_code, const u8 *extra_ies,
  			       size_t extra_ies_len)
  {
  	struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
  	struct ieee80211_local *local = sdata->local;
  	struct sk_buff *skb = NULL;
  	bool send_direct;
  	int ret;
  
  	if (!(wiphy->flags & WIPHY_FLAG_SUPPORTS_TDLS))
  		return -ENOTSUPP;
  
  	/* make sure we are in managed mode, and associated */
  	if (sdata->vif.type != NL80211_IFTYPE_STATION ||
  	    !sdata->u.mgd.associated)
  		return -EINVAL;
  
  	tdls_dbg(sdata, "TDLS mgmt action %d peer %pM\n",
  		 action_code, peer);
  
  	skb = dev_alloc_skb(local->hw.extra_tx_headroom +
  			    max(sizeof(struct ieee80211_mgmt),
  				sizeof(struct ieee80211_tdls_data)) +
  			    50 + /* supported rates */
  			    7 + /* ext capab */
  			    extra_ies_len +
  			    sizeof(struct ieee80211_tdls_lnkie));
  	if (!skb)
  		return -ENOMEM;
  
  	skb_reserve(skb, local->hw.extra_tx_headroom);
  
  	switch (action_code) {
  	case WLAN_TDLS_SETUP_REQUEST:
  	case WLAN_TDLS_SETUP_RESPONSE:
  	case WLAN_TDLS_SETUP_CONFIRM:
  	case WLAN_TDLS_TEARDOWN:
  	case WLAN_TDLS_DISCOVERY_REQUEST:
  		ret = ieee80211_prep_tdls_encap_data(wiphy, dev, peer,
  						     action_code, dialog_token,
  						     status_code, skb);
  		send_direct = false;
  		break;
  	case WLAN_PUB_ACTION_TDLS_DISCOVER_RES:
  		ret = ieee80211_prep_tdls_direct(wiphy, dev, peer, action_code,
  						 dialog_token, status_code,
  						 skb);
  		send_direct = true;
  		break;
  	default:
  		ret = -ENOTSUPP;
  		break;
  	}
  
  	if (ret < 0)
  		goto fail;
  
  	if (extra_ies_len)
  		memcpy(skb_put(skb, extra_ies_len), extra_ies, extra_ies_len);
  
  	/* the TDLS link IE is always added last */
  	switch (action_code) {
  	case WLAN_TDLS_SETUP_REQUEST:
  	case WLAN_TDLS_SETUP_CONFIRM:
  	case WLAN_TDLS_TEARDOWN:
  	case WLAN_TDLS_DISCOVERY_REQUEST:
  		/* we are the initiator */
  		ieee80211_tdls_add_link_ie(skb, sdata->vif.addr, peer,
  					   sdata->u.mgd.bssid);
  		break;
  	case WLAN_TDLS_SETUP_RESPONSE:
  	case WLAN_PUB_ACTION_TDLS_DISCOVER_RES:
  		/* we are the responder */
  		ieee80211_tdls_add_link_ie(skb, peer, sdata->vif.addr,
  					   sdata->u.mgd.bssid);
  		break;
  	default:
  		ret = -ENOTSUPP;
  		goto fail;
  	}
  
  	if (send_direct) {
  		ieee80211_tx_skb(sdata, skb);
  		return 0;
  	}
  
  	/*
  	 * According to 802.11z: Setup req/resp are sent in AC_BK, otherwise
  	 * we should default to AC_VI.
  	 */
  	switch (action_code) {
  	case WLAN_TDLS_SETUP_REQUEST:
  	case WLAN_TDLS_SETUP_RESPONSE:
  		skb_set_queue_mapping(skb, IEEE80211_AC_BK);
  		skb->priority = 2;
  		break;
  	default:
  		skb_set_queue_mapping(skb, IEEE80211_AC_VI);
  		skb->priority = 5;
  		break;
  	}
  
  	/* disable bottom halves when entering the Tx path */
  	local_bh_disable();
  	ret = ieee80211_subif_start_xmit(skb, dev);
  	local_bh_enable();
  
  	return ret;
  
  fail:
  	dev_kfree_skb(skb);
  	return ret;
  }
  
  static int ieee80211_tdls_oper(struct wiphy *wiphy, struct net_device *dev,
  			       u8 *peer, enum nl80211_tdls_operation oper)
  {
  	struct sta_info *sta;
  	struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
  
  	if (!(wiphy->flags & WIPHY_FLAG_SUPPORTS_TDLS))
  		return -ENOTSUPP;
  
  	if (sdata->vif.type != NL80211_IFTYPE_STATION)
  		return -EINVAL;
  
  	tdls_dbg(sdata, "TDLS oper %d peer %pM\n", oper, peer);
  
  	switch (oper) {
  	case NL80211_TDLS_ENABLE_LINK:
  		rcu_read_lock();
  		sta = sta_info_get(sdata, peer);
  		if (!sta) {
  			rcu_read_unlock();
  			return -ENOLINK;
  		}
  
  		set_sta_flag(sta, WLAN_STA_TDLS_PEER_AUTH);
  		rcu_read_unlock();
  		break;
  	case NL80211_TDLS_DISABLE_LINK:
  		return sta_info_destroy_addr(sdata, peer);
  	case NL80211_TDLS_TEARDOWN:
  	case NL80211_TDLS_SETUP:
  	case NL80211_TDLS_DISCOVERY_REQ:
  		/* We don't support in-driver setup/teardown/discovery */
  		return -ENOTSUPP;
  	default:
  		return -ENOTSUPP;
  	}
  
  	return 0;
  }
  
  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;
  	struct ieee80211_chanctx_conf *chanctx_conf;
  	enum ieee80211_band band;
  
  	rcu_read_lock();
  	chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf);
  	if (WARN_ON(!chanctx_conf)) {
  		rcu_read_unlock();
  		return -EINVAL;
  	}
  	band = chanctx_conf->def.chan->band;
  	sta = sta_info_get_bss(sdata, peer);
  	if (sta) {
  		qos = test_sta_flag(sta, WLAN_STA_WME);
  	} else {
  		rcu_read_unlock();
  		return -ENOLINK;
  	}
  
  	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);
  	if (!skb) {
  		rcu_read_unlock();
  		return -ENOMEM;
  	}
  
  	skb->dev = dev;
  
  	skb_reserve(skb, local->hw.extra_tx_headroom);
  
  	nullfunc = (void *) skb_put(skb, size);
  	nullfunc->frame_control = fc;
  	nullfunc->duration_id = 0;
  	memcpy(nullfunc->addr1, sta->sta.addr, ETH_ALEN);
  	memcpy(nullfunc->addr2, sdata->vif.addr, ETH_ALEN);
  	memcpy(nullfunc->addr3, sdata->vif.addr, ETH_ALEN);
  	nullfunc->seq_ctrl = 0;
  
  	info = IEEE80211_SKB_CB(skb);
  
  	info->flags |= IEEE80211_TX_CTL_REQ_TX_STATUS |
  		       IEEE80211_TX_INTFL_NL80211_FRAME_TX;
  
  	skb_set_queue_mapping(skb, IEEE80211_AC_VO);
  	skb->priority = 7;
  	if (qos)
  		nullfunc->qos_ctrl = cpu_to_le16(7);
  
  	local_bh_disable();
  	ieee80211_xmit(sdata, skb, band);
  	local_bh_enable();
  	rcu_read_unlock();
  
  	*cookie = (unsigned long) skb;
  	return 0;
  }
  
  static int ieee80211_cfg_get_channel(struct wiphy *wiphy,
  				     struct wireless_dev *wdev,
  				     struct cfg80211_chan_def *chandef)
  {
  	struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
  	struct ieee80211_local *local = wiphy_priv(wiphy);
  	struct ieee80211_chanctx_conf *chanctx_conf;
  	int ret = -ENODATA;
  
  	rcu_read_lock();
  	chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf);
  	if (chanctx_conf) {
  		*chandef = chanctx_conf->def;
  		ret = 0;
  	} else if (local->open_count > 0 &&
  		   local->open_count == local->monitors &&
  		   sdata->vif.type == NL80211_IFTYPE_MONITOR) {
  		if (local->use_chanctx)
  			*chandef = local->monitor_chandef;
  		else
  			*chandef = local->_oper_chandef;
  		ret = 0;
  	}
  	rcu_read_unlock();
  
  	return ret;
  }
  
  #ifdef CONFIG_PM
  static void ieee80211_set_wakeup(struct wiphy *wiphy, bool enabled)
  {
  	drv_set_wakeup(wiphy_priv(wiphy), enabled);
  }
  #endif
  
  struct cfg80211_ops mac80211_config_ops = {
  	.add_virtual_intf = ieee80211_add_iface,
  	.del_virtual_intf = ieee80211_del_iface,
  	.change_virtual_intf = ieee80211_change_iface,
  	.start_p2p_device = ieee80211_start_p2p_device,
  	.stop_p2p_device = ieee80211_stop_p2p_device,
  	.add_key = ieee80211_add_key,
  	.del_key = ieee80211_del_key,
  	.get_key = ieee80211_get_key,
  	.set_default_key = ieee80211_config_default_key,
  	.set_default_mgmt_key = ieee80211_config_default_mgmt_key,
  	.start_ap = ieee80211_start_ap,
  	.change_beacon = ieee80211_change_beacon,
  	.stop_ap = ieee80211_stop_ap,
  	.add_station = ieee80211_add_station,
  	.del_station = ieee80211_del_station,
  	.change_station = ieee80211_change_station,
  	.get_station = ieee80211_get_station,
  	.dump_station = ieee80211_dump_station,
  	.dump_survey = ieee80211_dump_survey,
  #ifdef CPTCFG_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,
  	.update_mesh_config = ieee80211_update_mesh_config,
  	.get_mesh_config = ieee80211_get_mesh_config,
  	.join_mesh = ieee80211_join_mesh,
  	.leave_mesh = ieee80211_leave_mesh,
  #endif
  	.change_bss = ieee80211_change_bss,
  	.set_txq_params = ieee80211_set_txq_params,
  	.set_monitor_channel = ieee80211_set_monitor_channel,
  	.suspend = ieee80211_suspend,
  	.resume = ieee80211_resume,
  	.scan = ieee80211_scan,
  	.sched_scan_start = ieee80211_sched_scan_start,
  	.sched_scan_stop = ieee80211_sched_scan_stop,
  	.auth = ieee80211_auth,
  	.assoc = ieee80211_assoc,
  	.deauth = ieee80211_deauth,
  	.disassoc = ieee80211_disassoc,
  	.join_ibss = ieee80211_join_ibss,
  	.leave_ibss = ieee80211_leave_ibss,
  	.set_mcast_rate = ieee80211_set_mcast_rate,
  	.set_wiphy_params = ieee80211_set_wiphy_params,
  	.set_tx_power = ieee80211_set_tx_power,
  	.get_tx_power = ieee80211_get_tx_power,
  	.set_wds_peer = ieee80211_set_wds_peer,
  	.rfkill_poll = ieee80211_rfkill_poll,
  	CFG80211_TESTMODE_CMD(ieee80211_testmode_cmd)
  	CFG80211_TESTMODE_DUMP(ieee80211_testmode_dump)
  	.set_power_mgmt = ieee80211_set_power_mgmt,
  	.set_bitrate_mask = ieee80211_set_bitrate_mask,
  	.remain_on_channel = ieee80211_remain_on_channel,
  	.cancel_remain_on_channel = ieee80211_cancel_remain_on_channel,
  	.mgmt_tx = ieee80211_mgmt_tx,
  	.mgmt_tx_cancel_wait = ieee80211_mgmt_tx_cancel_wait,
  	.set_cqm_rssi_config = ieee80211_set_cqm_rssi_config,
  	.mgmt_frame_register = ieee80211_mgmt_frame_register,
  	.set_antenna = ieee80211_set_antenna,
  	.get_antenna = ieee80211_get_antenna,
  	.set_ringparam = ieee80211_set_ringparam,
  	.get_ringparam = ieee80211_get_ringparam,
  	.set_rekey_data = ieee80211_set_rekey_data,
  	.tdls_oper = ieee80211_tdls_oper,
  	.tdls_mgmt = ieee80211_tdls_mgmt,
  	.probe_client = ieee80211_probe_client,
  	.set_noack_map = ieee80211_set_noack_map,
  #ifdef CONFIG_PM
  	.set_wakeup = ieee80211_set_wakeup,
  #endif
  	.get_et_sset_count = ieee80211_get_et_sset_count,
  	.get_et_stats = ieee80211_get_et_stats,
  	.get_et_strings = ieee80211_get_et_strings,
  	.get_channel = ieee80211_cfg_get_channel,
  	.start_radar_detection = ieee80211_start_radar_detection,
  	.channel_switch = ieee80211_channel_switch,
  #ifdef CPTCFG_ATH9K_TID_SLEEPING
      .tid_sleeping = ieee80211_tid_sleeping,
  #endif        
  };
  